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Sample records for arm based soc

  1. Co-verification of hardware and software for ARM SoC design

    CERN Document Server

    Andrews, Jason

    2004-01-01

    Hardware/software co-verification is how to make sure that embedded system software works correctly with the hardware, and that the hardware has been properly designed to run the software successfully -before large sums are spent on prototypes or manufacturing. This is the first book to apply this verification technique to the rapidly growing field of embedded systems-on-a-chip(SoC). As traditional embedded system design evolves into single-chip design, embedded engineers must be armed with the necessary information to make educated decisions about which tools and methodology to deploy. SoC verification requires a mix of expertise from the disciplines of microprocessor and computer architecture, logic design and simulation, and C and Assembly language embedded software. Until now, the relevant information on how it all fits together has not been available. Andrews, a recognized expert, provides in-depth information about how co-verification really works, how to be successful using it, and pitfalls to avoid. H...

  2. AMBA Based Advanced DMA Controller for SoC

    Directory of Open Access Journals (Sweden)

    Abdullah Aljumah

    2016-03-01

    Full Text Available this paper describes the implementation of an AMBA Based Advanced DMA Controller for SoC. It uses AMBA Specifications, where two buses AHB and APB are defined and works for processor as system bus and peripheral bus respectively. The DMA controller functions between these two buses as a bridge and allow them to work concurrently. Depending on the speed of peripherals it uses buffering mechanism. Therefore an asynchronous FIFO is used for synchronizing the speed of peripherals. The proposed DMA controller can works in SoC along with processor and achieve fast data rate. The method introduced significant volume of data transfer with very low timing characteristics. Thus it is a better choice in respect of timing and volume of data. These two issues have been resolved under this research study. The results are compared with the AMD processors, like Geode GX 466, GX 500 and GX 533, and the presence and absence of DMA controller with processor is discussed and compared. The DMAC stands to be better alternative in SoC design.

  3. Model based SOC estimation for high-power Li-ion battery packs used on FCHVs

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A model based method which recruited the extended Kalman filter (EKF) to estimate the full state of charge (SOC) of Li-ion battery was proposed. The underlying dynamic behavior of the cell pack was described based on an equivalent circuit comprising of two capacitors and three resistors. Measurements in two tests were applied to compare the SOC estimated by model based EKF estimation with the SOC calculated by coulomb counting. Results have shown that the proposed method is able to perform a good estimation of the SOC of battery packs. Moreover, a corresponding battery management systems (BMS) including software and hardware based on this method was designed.

  4. The ZYNQ book embedded processing with the ARM Cortex-A9 on the Xilinx Zynq-7000 all programmable SoC

    CERN Document Server

    Crockett, Louise H; Enderwitz, Martin A; Stewart, Robert W

    2014-01-01

    This book is about the Zynq-7000 All Programmable System on Chip, the family of devices from Xilinx that combines an application-grade ARM Cortex-A9 processor with traditional FPGA logic fabric. Catering for both new and experienced readers, it covers fundamental issues in an accessible way, starting with a clear overview of the device architecture, and an introduction to the design tools and processes for developing a Zynq SoC. Later chapters progress to more advanced topics such as embedded systems development, IP block design and operating systems. Maintaining a 'real-world' perspective, the book also compares Zynq with other device alternatives, and considers end-user applications. The Zynq Book is accompanied by a set of practical tutorials hosted on a companion website. These tutorials will guide the reader through first steps with Zynq, following on to a complete, audio-based embedded systems design.

  5. SOC EKF Estimation based on a Second-order LiFePO4 Battery Model

    Directory of Open Access Journals (Sweden)

    Zheng Zhu

    2013-08-01

    Full Text Available An accurate battery State of Charge (SOC estimation has great significance in improving battery life and vehicle performance. An improved second-order battery model is proposed in this paper through quantities of LiFePO4 battery experiments. The parameters of the model were acquired by the HPPC composite pulse condition under different temperature, charging and discharging rates, SOC. Based on the model, battery SOC is estimated by Extended Kalman Filter (EKF. Comparison of three different pulse conditions shows that the average error of SOC estimation of this algorithm is about 4.2%. The improved model is able to reflect the dynamic performance of batteries suitably, and the SOC estimation algorithm is provided with higher accuracy and better dynamic adaptability.

  6. SOC Estimation of LiFePO4 Battery based on Improved Ah Integral Method

    Directory of Open Access Journals (Sweden)

    Zheng ZHU

    2013-07-01

    Full Text Available State of charge (SOC is the most important status parameters of energy storage system, which is able to predict the available mileage of electric vehicle. In fact, the accuracy of SOC estimation plays a vital role in the usability and security of the battery. To fully consider the practical demands, a novel method to predict SOC of LiFePO4 battery is presented in this paper, which defines the correct coefficient separately under two working conditions of charging and discharging. Based on effective factors such as coulombic efficiency, charge and discharge current, and temperature, an Ah integral SOC estimation method with two kinds of efficiency correct coefficients is established by performing massive experimental study. Experiments prove that the estimated error of SOC is less than 5%. Compared with the original Ah method, the improved Ah method is more advantageous in the accuracy and reliability.

  7. Research on SOC estimation based on second-order RC model

    Directory of Open Access Journals (Sweden)

    Xieyang Wang

    2012-11-01

    Full Text Available The estimation accuracy of batteries’ State of Charge (SOC plays an important role in the development of hybrid electric vehicle (HEV. Accurate estimation of SOC can prevent battery from overly charging and discharging, so the lifetime of batteries will be increased. Although Kalman filter algorithm has better estimation accuracy for HEV application in which the current changes fast, Kalman filter algorithm deeply relies on the battery model. In other words, the accuracy of batteries’ SOC estimation needs precise batteries models. Besides, when the HEV is running, the statistical characteristics of noise produced in the course of the battery management system collecting data are unknown. This can cause estimated performance of Kalman filter algorithm to decrease even diffuse. To solve the problem, adaptive Kalman filter algorithm is adopted to estimate battery SOC based on the second order RC battery model in this paper. Through MATLAB simulation analysis, the estimation accuracy of battery SOC is improved to some extent.

  8. Optimal hardware/software co-synthesis for core-based SoC designs

    Institute of Scientific and Technical Information of China (English)

    Zhan Jinyu; Xiong Guangze

    2006-01-01

    A hardware/software co-synthesis method is presented for SoC designs consisting of both hardware IP cores and software components on a graph-theoretic formulation. Given a SoC integrated with a set of functions and a set of performance factors, a core for each function is selected from a set of alternative IP cores and software components, and optimal partitions is found in a way to evenly balance the performance factors and to ultimately reduce the overall cost, size, power consumption and runtime of the core-based SoC. The algorithm formulates IP cores and components into the corresponding mathematical models, presents a graph-theoretic model for finding the optimal partitions of SoC design and transforms SoC hardware/software co-synthesis problem into finding optimal paths in a weighted, directed graph. Overcoming the three main deficiencies of the traditional methods, this method can work automatically, evaluate more performance factors at the same time and meet the particularity of SoC designs.At last, the approach is illustrated that is practical and effective through partitioning a practical system.

  9. Design of SOC based on IP core%基于IP的系统芯片(SOC)设计

    Institute of Scientific and Technical Information of China (English)

    薛严冰; 徐晓轩

    2004-01-01

    随着集成电路设计与工艺技术水平的提高,出现了系统芯片(SOC)的概念.本文介绍了基于IP的SOC设计方式的设计流程,指出了其与传统IC设计方法的不同.讨论了支持SOC设计的几种关键技术,并对SOC的技术优势及发展趋势作了全面阐述.

  10. A Prototype-Based Gate-Level Cycle-Accurate Methodology for SoC Performance Exploration and Estimation

    Directory of Open Access Journals (Sweden)

    Ching-Lung Su

    2013-01-01

    Full Text Available A prototype-based SoC performance estimation methodology was proposed for consumer electronics design. Traditionally, prototypes are usually used in system verification before SoC tapeout, which is without accurate SoC performance exploration and estimation. This paper attempted to carefully model the SoC prototype as a performance estimator and explore the environment of SoC performance. The prototype met the gate-level cycle-accurate requirement, which covered the effect of embedded processor, on-chip bus structure, IP design, embedded OS, GUI systems, and application programs. The prototype configuration, chip post-layout simulation result, and the measured parameters of SoC prototypes were merged to model a target SoC design. The system performance was examined according to the proposed estimation models, the profiling result of the application programs ported on prototypes, and the timing parameters from the post-layout simulation of the target SoC. The experimental result showed that the proposed method was accompanied with only an average of 2.08% of error for an MPEG-4 decoder SoC at simple profile level 2 specifications.

  11. Design of visual prosthesis image processing system based on SoC

    Science.gov (United States)

    Guo, Fei; Yang, Yuan; Gao, Yong; Wu, Chuan Ke

    2014-07-01

    This paper presents a visual prosthesis image processing system based on Leon3 SoC (System on Chip) platform. The system is built through GRLIB system development platform. It integrates the image preprocessing IP core, image encoder IP core and image data modulation IP core we designed. We transplant the system to the FPGA development board and verify the system functions. The results show that the designed system can achieve the functions of visual prosthesis image processing system effectively.

  12. An OCP Compliant Network Adapter for GALS-based SoC Design Using the MANGO Network-on-Chip

    DEFF Research Database (Denmark)

    Bjerregaard, Tobias; Mahadevan, Shankar; Olsen, Rasmus Grøndahl;

    2005-01-01

    decouples communication and computation, providing memory-mapped OCP transactions based on primitive message-passing services of the network. Also, it facilitates GALS-type systems, by adapting to the clockless network. This helps leverage a modular SoC design flow. We evaluate performance and cost of 0......The demand for IP reuse and system level scalability in System-on-Chip (SoC) designs is growing. Network-onchip (NoC) constitutes a viable solution space to emerging SoC design challenges. In this paper we describe an OCP compliant network adapter (NA) architecture for the MANGO NoC. The NA...

  13. SOC Based Battery Cell Balancing with a Novel Topology and Reduced Component Count

    Directory of Open Access Journals (Sweden)

    Zheng Chen

    2013-05-01

    Full Text Available This paper proposes a novel battery cell balancing topology with reduced component count and simplified control. The balancing algorithm is based on the state of charge (SOC of each individual cell instead of cell voltage. The principle of the proposed topology is analyzed and verified through simulation and experiments. Then an experimental battery test workbench is established to validate the proposed balancing algorithm. The experimental results show that the proposed balancing topology and associated algorithm can perform well in real applications.

  14. Multiple MIPS 4Kc cores based interrupt controller design and its implementation on HDTV SoC platform

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A multiple MIPS 4Kc processor cores based interrupt processing system is introduced. The interrupt controller plays a key role in the high definition television (HDTV) system-on-a-chip (SoC) platform,especially when it is a multiple processor system. Based on a general introduction to the whole HDTV SoC platform, a layered interrupt controller and its implementation are discussed in detail. The proposed scheme was implemented in our FPGA verification board. The results indicate that our scheme is reliable and efficient. Meanwhile, as a functional intellectual property (IP), the interrupt controller has reusability and expandability with the layered structure.

  15. The inventory-based approach for prediction of SOC change following land use change

    Directory of Open Access Journals (Sweden)

    van Wesemael B.

    2004-01-01

    Full Text Available This paper describes and illustrates an approach to predict soil organic carbon (SOC change in time after land use change as derived from SOC differences in space. The approach requires the availability of a SOC inventory for spatially explicit combinations of soil and land use type, further termed landscape units (LSU. SOC of LSU with equal soil type but different land use type are compared and the observed differences in SOC are interpreted as the expected SOC change after the corresponding land use change. From a confrontation with time series of agro-statistical data on crop and grassland areas and on animal manure production, we conclude that the approach is a low-cost alternative for more complex methods like multitemporal assessments and modelling, provided that (i an inventory reflecting current management and climate conditions and (ii additional information on the extent and type of recent land use changes are available. Examples of land use and land management changes are discussed, such as grassland – cropland conversions, the conversion of permanent to temporary grassland, or changes in manure application.

  16. Comparison Study on Two Model-Based Adaptive Algorithms for SOC Estimation of Lithium-Ion Batteries in Electric Vehicles

    Directory of Open Access Journals (Sweden)

    Yong Tian

    2014-12-01

    Full Text Available State of charge (SOC estimation is essential to battery management systems in electric vehicles (EVs to ensure the safe operations of batteries and providing drivers with the remaining range of the EVs. A number of estimation algorithms have been developed to get an accurate SOC value because the SOC cannot be directly measured with sensors and is closely related to various factors, such as ambient temperature, current rate and battery aging. In this paper, two model-based adaptive algorithms, including the adaptive unscented Kalman filter (AUKF and adaptive slide mode observer (ASMO are applied and compared in terms of convergence behavior, tracking accuracy, computational cost and estimation robustness against parameter uncertainties of the battery model in SOC estimation. Two typical driving cycles, including the Dynamic Stress Test (DST and New European Driving Cycle (NEDC are applied to evaluate the performance of the two algorithms. Comparison results show that the AUKF has merits in convergence ability and tracking accuracy with an accurate battery model, while the ASMO has lower computational cost and better estimation robustness against parameter uncertainties of the battery model.

  17. Generic System Verilog Universal Verification Methodology Based Reusable Verification Environment for Efficient Verification of Image Signal Processing IPS/SOCS

    Directory of Open Access Journals (Sweden)

    Abhishek Jain

    2012-12-01

    Full Text Available In this paper, we present Generic System Verilog Universal Verification Methodology based Reusable Verification Environment for efficient verification of Image Signal Processing IP’s/SoC’s. With the tight schedules on all projects it is important to have a strong verification methodology which contributes to First Silicon Success. Deploy methodologies which enforce full functional coverage and verification of corner cases through pseudo random test scenarios is required. Also, standardization of verification flow is needed. Previously, inside imaging group of ST, Specman (e/Verilog based Verification Environment forIP/Subsystem level verification and C/C++/Verilog based Directed Verification Environment for SoC Level Verification was used for Functional Verification. Different Verification Environments were used at IP level and SoC level. Different Verification/Validation Methodologies were used for SoC Verification across multiple sites. Verification teams were also looking for the ways how to catch bugs early in the design cycle? Thus, Generic System Verilog Universal Verification Methodology (UVM based Reusable Verification Environment is required to avoid the problem of having so many methodologies and provides a standard unified solution which compiles on all tools.

  18. Highly monodisperse M III-based soc -MOFs (M = in and Ga) with cubic and truncated cubic morphologies

    KAUST Repository

    Pang, Maolin

    2012-08-15

    In this work, we carry out an investigation on shape-controlled growth of In III- and Ga III-based square-octahedral metal-organic frameworks (soc-MOFs). In particular, controllable crystal morphological evolution from simple cubes to complex octadecahedra has been achieved, and resultant highly uniform crystal building blocks promise new research opportunities for preparation of self-assembled MOF materials and related applications. © 2012 American Chemical Society.

  19. FPGA Implementation of Deblocking Filter Custom Instruction Hardware on NIOS - II Based SOC

    Directory of Open Access Journals (Sweden)

    Bolla Leela Naresh

    2011-12-01

    Full Text Available This paper presents a frame work for hardware acceleration for post video processing system implemented on FPGA. The deblocking filter algorithms ported on SOC having Alter a NIOS-II soft core processor.SOC designed with the help of SOPC builder .Custom instructions are chosen by identifying the most frequently used tasks in the algorithm and the instruction set of NIOS-II processor has been extended. Deblocking filter new instruction added to the processor that are implemented in hardware and interfaced to the NIOSII processor. New instruction added to the processor to boost the performance of the deblocking filter algorithm. Use of custom instructions the implemented tasks have been accelerated by 5.88%. The benefit of the speed is obtained at the cost of very small hardware resources.

  20. FPGA Implementation of Deblocking Filter Custom Instruction Hardware on NIOS - II Based SOC

    Directory of Open Access Journals (Sweden)

    Addanki Purna Ramesh

    2012-01-01

    Full Text Available This paper presents a frame work for hardware acceleration for post video processing system implemented on FPGA. The deblocking filter algorithms ported on SOC having Altera NIOS-II soft core processor.SOC designed with the help of SOPC builder .Custom instructions are chosen by identifying the most frequently used tasks in the algorithm and the instruction set of NIOS-II processor has been extended. Deblockingfilter new instruction added to the processor that are implemented in hardware and interfaced to the NIOSII processor. New instruction added to the processor to boost the performance of the deblocking filteralgorithm. Use of custom instructions the implemented tasks have been accelerated by 5.88%. The benefit of the speed is obtained at the cost of very small hardware resources.

  1. MOF Crystal Chemistry Paving the Way to Gas Storage Needs: Aluminum Based soc-MOF for CH4, O2 and CO2 Storage

    KAUST Repository

    Alezi, Dalal

    2015-09-28

    The molecular building block approach was employed effectively to construct a series of novel isoreticular, highly porous and stable, aluminum based Metal-Organic Frameworks with soc topology. From this platform, three compounds were experimentally isolated and fully characterized, namely, the parent Al-soc-MOF-1 and its naphthalene and anthracene analogues. Al-soc-MOF-1 exhibits outstanding gravimetric methane uptake (total and working capacity). It is shown experimentally, for the first time, that the Al-soc-MOF platform can address the challenging Department of Energy dual target of 0.5 g/g (gravimetric) and 264 cm3 (STP)/cm3 (volumetric) methane storage. Furthermore, Al-soc-MOF exhibited the highest total gravimetric and volumetric uptake for carbon dioxide and the utmost total and deliverable uptake for oxygen at relatively high pressures among all microporous MOFs. In order to correlate the MOF pore structure and functionality to the gas storage properties, to better understand the structure-properties relationship, we performed a molecular simulation study and evaluated the methane storage performance of Al-soc-MOF platform using diverse organic linkers. It was found that shortening the parent Al-soc-MOF-1 linker resulted in a noticeable enhancement in the working volumetric capacity at specific temperatures and pressures with amply conserved gravimetric uptake/working capacity. In contrast, further expansion of the organic linker (branches and/or core) led to isostructural Al-soc-MOFs with enhanced gravimetric uptake but noticeably lower volumetric capacity. The collective experimental and simulation studies indicated that the parent Al-soc-MOF-1 exhibits the best compromise between the volumetric and gravimetric total and working uptakes in a wide range of pressure and temperature conditions.

  2. The Design of Humanoid Robot Arm Based on Morphological and Neurological Analysis of Human Arm

    OpenAIRE

    Moon, Yongseon; Ko, Nak Yong; Bae, Youngchul

    2009-01-01

    In this paper, we have presented the implementation and performance evaluation for SERCOS based humanoid robot arm by using morphological and neurological analysis of human arm. Moreover, we reviewed the possibility of application of these robot arms. First, we proposed robot development methodology of open architecture based on ISO15745 for "opening of humanoid robot." Then, we verified the method of implementation of humanoid robot arm and its application to the real world. We have implemen...

  3. Partial reconfiguration of a peripheral in an FPGA-based SoC to analyse performance-area behaviour

    Science.gov (United States)

    Cardona, Andres; Guo, Yi; Ferrer, Carles

    2011-05-01

    Systems on Chip (SoC) are present in a wide range of applications. This diversity in addition with the quantity of critical variables involved in their design process becomes it as a great challenging topic. FPGAs have consolidated as a preferred device to develop and prototype SoCs, and consequently Partial Reconfiguration (PR) has gained importance in this approach. Through PR it is possible to have a section of the FPGA operating, while other section is disabled and partially reconfigured to provide new functionality. In this way hardware resources can be time-multiplexed and therefore it is possible to reduce size, cost and power. In this case we focus on the implementation of a SoC, in an FPGA-based board, with one of its peripherals being a reconfigurable partition (RP). Inside this RP different hardware modules defined as reconfigurable modules (RM) can be configured. Thus, the system is suitable to have different hardware configurations depending on the application needs and FPGA limitations, while the rest of the system continues working. To this end a MicroBlaze soft-core processor is used in the system design and a Virtex-5 FPGA board is utilized to its implementations. A remote sensing application is used to explore the capabilities of this approach. Identifying the section(s) of the application suitable of being time-shared it is possible to define the RMs to place inside the RP. Different configurations were carried out and measurements of area were taken. Preliminary results of the performance-area utilisation are presented to validate the improvement in flexibility and resource usage.

  4. SOC 333 courses/snaptutorial

    OpenAIRE

    Martina Cole

    2015-01-01

    For more classes visit www.snaptutorial.com   SOC 333 Week 1 Individual Assignment Gender Trait Chart SOC 333 Week 1 Individual Assignment Social Movements and Gender SOC 333 Week 1 DQ 1 SOC 333 Week 1 DQ 2 SOC 333 Week 1 DQ 3 SOC 333 Week 2 Individual Assignment Gender Role Analysis SOC 333 Week 2 DQ 1 SOC 333 Week 2 DQ 2 SOC 333 Week 3 Learning Team Assignment Gender and the Media SOC 333 Week 3 DQ 1 SOC 333 Week 3 DQ 2 SOC 333 We...

  5. SOCS, inflammation and autoimmunity

    Directory of Open Access Journals (Sweden)

    Akihiko eYoshimura

    2012-03-01

    Full Text Available Cytokines play essential roles in innate and adaptive immunity. However, excess cytokines or dysregulation of cytokine signaling can cause a variety of diseases, including allergies, autoimmune diseases, inflammation, and cancer. Most cytokines utilize the so-called Janus kinase-signal transducers and activators of transcription (JAK-STAT pathway. This pathway is negatively regulated by various mechanisms including suppressors of cytokine signaling (SOCS proteins. SOCS proteins bind to JAK or cytokine receptors, thereby suppressing further signaling events. Especially, SOCS1 and SOCS3 are strong inhibitors of JAK, because these two contain kinase inhibitory region (KIR at the N-terminus. Studies using conditional knockout mice have shown that SOCS proteins are key physiological as well as pathological regulators of immune homeostasis. Recent studies have also demonstrated that SOCS1 and SOCS3 are important regulators of helper T cell differentiation and functions.

  6. 基于结构逻辑树的电池组SOC估算%Determination of battery pack SOC based on structural logic tree

    Institute of Scientific and Technical Information of China (English)

    徐亮; 颜兆林; 孙权; 潘正强

    2014-01-01

    The concept of the battery pack SOC was redefined to estimate the battery pack SOC in real time. Battery pack structure and the individual variation of each cel into consideration were considered, and battery pack SOC definition was cleared. A battery pack estimation model based on Structural Logic Tree was proposed, in which the logical relationship of each cel could be described. Based on the arithmetic rule of structural logic tree, the quick estimation of battery pack SOC could be realized. Experiment shows that the method is quick and effective.%为了实时估算电池组SOC,分析了当前SOC定义的局限性,并考虑电池组的结构和单体电池的差异性,明确电池组SOC定义。提出基于结构逻辑树的电池组SOC估算模型,利用结构逻辑树描述电池组单体电池之间的逻辑关系,并基于结构逻辑树的运算规则,实现电池组SOC的快速估算。实验证明,该模型能够快速有效地估算电池组SOC。

  7. SOC 402 courses/snaptutorial

    OpenAIRE

    Amin Maalouf

    2015-01-01

    For more classes visit www.snaptutorial.com   SOC 402 Week 1 DQ 1 Three Sociological Perspectives SOC 402 Week 1 DQ 2 Qualitative vs. Quantitative Research & the Methods of Social Research SOC 402 Week 2 DQ 1 McDonaldization SOC 402 Week 2 DQ 2 Generational Differences in the Workplace SOC 402 Week 2 Assignment Women and Flexibility in the Workplace SOC 402 Week 3 DQ 1 Retirement SOC 402 Week 3 DQ 2 Sexual Harassment SOC 402 Week 3 Assignment O...

  8. Reusable AVS decoder SOC architecture design based on software-hardware co-design%可重用AVS芯片结构软硬件协同设计

    Institute of Scientific and Technical Information of China (English)

    王忠平; 祝永新; 郭炜

    2008-01-01

    根据软硬件设计思想设计一个结构划分合理的可重用的AVS视频解码器结构.通过ARM平台软件移植,然后使用ARM ESL工具对系统模块性能进行整体评估,然后根据评估结果以及硬件实现复杂度进行软硬件结构的划分,定制软硬件模块接口,从硬件扩展考虑把硬件部分设计为与H.264解码器兼容并用SystemC模拟,最后在SOC Designer 平台做协同验证及仿真.

  9. 基于覆盖率驱动的SoC验证技术研究%Research of SoC Verification Technology Based on Coverage--Driven

    Institute of Scientific and Technical Information of China (English)

    朱车壮; 陈岚; 冯燕

    2011-01-01

    Coverage data--base is the qualitative measurement for the verification engineer to judge the complete degree of SoC verification, and it provides the safeguard for the SoC validation completeness. This paper takes the verification of SoC bus arbiter as an example, analyzes many kinds of coverage in detail, for example, structure coverage, functional coverage, assertion coverage and so on, then modifies the RTL design code and testcases based on the analysis results of these coverage, until the integrity of the verification meet the design requirements.%覆盖率数据是验证工程师判定SoC验证完备程度的定性度量,为SoC验证完全性提供了保障,指明了方向.文中以SoC总线仲裁器验证为例,对其结构覆盖率、功能覆盖率、断言覆盖率等多种覆盖率进行了全面的分析,然后根据覆盖率分析结果反馈到RTL设计代码和测试激励进行修正,直到验证的完整性满足设计的要求.

  10. SOC REJECTION BY NANOFILTRATION

    Science.gov (United States)

    A study was conducted to evaluate the rejection of six synthetic organic compounds (SOCs) from a potable water source by a nanofiltration membrane process. The S0Cs were ethylene dibromide (EDB), dibromochloropropane (DBCP), chlordane, heptachlor, methoxychlor and alachlor. To in...

  11. A software radio platform based on ARM and FPGA

    Directory of Open Access Journals (Sweden)

    Yang Xin.

    2016-01-01

    Full Text Available The rapid rise in computational performance offered by computer systems has greatly increased the number of practical software radio applications. A scheme presented in this paper is a software radio platform based on ARM and FPGA. FPGA works as the coprocessor together with the ARM, which serves as the core processor. ARM is used for digital signal processing and real-time data transmission, and FPGA is used for synchronous timing control and serial-parallel conversion. A SPI driver for real-time data transmission between ARM and FPGA under ARM-Linux system is provided. By adopting modular design, the software radio platform is capable of implementing wireless communication functions and satisfies the requirements of real-time signal processing platform for high security and broad applicability.

  12. Bailleul-le-Soc

    OpenAIRE

    Billand, Ghislaine

    2013-01-01

    Identifiant de l'opération archéologique : 9154 Date de l'opération : 2007 (EX) Le projet d’un parc éolien réparti sur les communes de Bailleul-le-Soc, Épineuse et Fouilleuse a entraîné la prescription d’une campagne de diagnostic archéologique sur quatre des neuf éoliennes. La présence de sites gallo-romains repérés par prospection aérienne à Épineuse « Le Haut du Bois Robin » et Bailleul-le-Soc « La Terre d’Éloge », laissait entrevoir la possibilité de documenter ces vestiges. L’interventi...

  13. Research on optimal power allocation strategy based on SOC state feedback in hybrid energy storage system%基于 SOC 状态反馈的混合储能功率优化策略

    Institute of Scientific and Technical Information of China (English)

    孙纯军; 倪春花; 窦晓波

    2016-01-01

    文中储能系统功率优化分配以一阶惯性滤波系统为基础,介绍了滤波系数的确定方法,首先提出了基于频谱分析的混合储能系统功率分配方法,根据频谱分析结果,确定波动功率在蓄电池与超级电容之间的分配;在频谱分析的基础上,进一步提出了基于SOC状态反馈的混合储能系统功率优化分配方法,并采用模糊控制,根据储能系统荷电状态SOC的值实时调整系统的滤波时间参数,从而实现超级电容-蓄电池储能系统的长期有效运行。最后,在PSCAD/EMTDC中搭建微电网仿真模型,并设计仿真方案,通过仿真验证所提混合储能系统功率优化分配策略的有效性。%Energy storage system has an important significance for reliable and stable operation of micro-grids.Con-sidering the lack of single form of energy storage, ultra-capacitor-battery hybrid energy storage system is used in this paper.Strategies of power distribution of energy storage system are based on first order inertial filter system, and the method to determine the filter coefficients are introduced.Firstly, a method based on spectrum analysis is proposed to distribute the fluctuated power between the battery and ultra-capacitor.Next, a power distribution strategy of hybrid energy storage system based on SOC feedback is proposed.And fuzzy control method is adopted to adjust system pa-rameters in real time according to the state of charge of the storage system, thus achieving the long term operation of hybrid energy storage system.Finally, the models are built in PSCAD /EMTDC to verify the effectiveness of the pow-er distribution strategies through simulation according to the designed projects.

  14. Short communication: serum-based assay accurately detects single nucleotide polymorphisms of IL28B and SOCS3 in HIV/hepatitis C virus-coinfected subjects.

    Science.gov (United States)

    Shaffer, Ashton; Hubbard, Jon J; Townsend, Kerry; Kottilil, Shyam; Polis, Michael A; Masur, Henry; Kohli, Anita

    2014-08-01

    Single nucleotide polymorphisms (SNPs) have become important in predicting treatment response to interferon containing anti-hepatitis C virus (HCV) therapy in HCV and HIV/HCV-infected patients. A reliable method for extracting host DNA from serum for genotyping assays would present a practical alternative for clinicians and investigators seeking to perform SNP analyses in HCV-infected patients, particularly in resource-limited settings. Human genomic DNA was extracted from peripheral blood mononuclear cells (PBMCs) and serum of 51 HIV/HCV coinfected patients using the QIAamp DNA Blood Mini Kit and QIAamp Min Elute Virus Spin Kit, respectively. Genotyping assays for the IL28B SNP (rs12979860) and SOCS3 SNP (rs4969170) were performed using the commercially available ABI Taqman allelic discrimination kit and reverse transcriptase-polymerase chain reaction (RT-PCR) was performed using 50 cycles. Results of the genotyping assays using DNA from both PBMCs and cell-free serum were determined separately and then analyzed for concurrence. Genotype analyses performed using DNA isolated from PBMCs or cell-free serum showed a 100% agreement between the IL28B genotyping results from the serum and PBMC isolates and 98% agreement for SOCS3 SNP. This novel serum-based assay to isolate DNA fragments from the serum of HIV/HCV-coinfected subjects can accurately determine a subject's genotype for IL28B (rs12979860) and SOCS3 (rs4969170). This assay could be immediately valuable for detecting clinically relevant SNPs from serum in cases in which PBMCs are not available.

  15. Research on object-oriented SOC design methodology

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The growing complexity of System on Chip (SOC) requires a system level specification and design approach. High-level languages such as C+ +/SystemC can play multiple roles in system design as target languages. There are many practical problems in the application of object-oriented methods for this goal. Based on the analysis of traditional and system-level design methodology, a new object-oriented SOC design methodology with object-oriented design patterns is proposed, which emphasizes high-level design and verification. Aiming at the final goal of developing design patterns specific to SOC design, the reuse of design patterns in SOC systems and the capability of new SOC design patterns are discussed. With the illustration of some concrete examples of SOC design patterns, the application of object-oriented design methodology in the SOC design process is presented.

  16. ARM 7 BASED MP3 PLAYER

    Directory of Open Access Journals (Sweden)

    Ashiq V Mehta

    2014-02-01

    Full Text Available MP3 is a patented encoding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. Since the MPEG-1 Layer III encoding technology is nowadays widely used it might be interesting to gain knowledge of how this powerful compression/decompression scheme actually functions. The MPEG-1 Layer III is capable of reducing the bit rate with a factor of 12 without almost any audible degradation. Arm7 lpc2148 is arm7tdmi-s core board microcontroller that uses 16/32-bit 64 pin (lqfp microcontroller no.lpc2148 from Philips (nxp.The hardware system of lpc2148 includes the necessary devices within only one mcu has such as usb, adc, dac, timer/counter, pwm, capture, i2c, spi, uart, and etc.

  17. Ad-hoc Network Based on ARM-Linux%基于ARM-Linux的Ad-hoc组网

    Institute of Scientific and Technical Information of China (English)

    王晓华; 贾继洋

    2014-01-01

    Aiming to solve the problem of the contemporary communication system in the absence of any network, a new scheme of the Ad-hoc network based on ARM-Linux system is designed. Firstly, this paper introduces the transportation of the Linux2.6.36 and the driver of RT3070 on ARM11 platform. Then based on socket programming in TCP/IP, program designing of communication and tests are conducted on the ARM-Linux platform. Results have proved that the Ad-hoc network can use the least resources and costs to achieve reliable high rate communication. It is significant for practical application.%针对传统通信系统不能满足在无任何网络情况下的通信需求现状,设计并实现了一种由 ARM-Linux 系统及其外围部件组成的无线自组网(Ad-hoc)的通信方案.在 ARM11平台上完成了 Linux2.6.36操作系统和RT3070无线通信模块的驱动程序移植.利用基于TCP/IP协议的socket编程,编写测试程序,进行节点间无线通信传输实验.实验结果表明:本文搭建的Ad-hoc网络,可以用最少的资源和成本,实现节点间可靠的无线高速率通信,具有现实应用意义.

  18. SOC 203 ASH Tutorial course/ Uoptutorial

    OpenAIRE

    Michael Crichton

    2015-01-01

    For more course tutorials visit www.uoptutorial.com   SOC 203 Week 1 DQ 1 The Sociological Imagination SOC 203 Week 1 DQ 2 Homelessness SOC 203 Week 2 DQ 1 Education and Equality SOC 203 Week 2 DQ 2 Title IX SOC 203 Week 2 Final Paper Preparation SOC 203 Week 3 DQ 1 Hate Crimes SOC 203 Week 3 DQ 2 Prisons and the War on Drugs SOC 203 Week 3 The Interconnection of Social Problems SOC 203 Week 4 DQ 1 Gay Parenting SOC 203 Week 4 DQ 2 Reinvent...

  19. Asynchronous Complex Pipeline Design Based on ARM Instruction Set

    Institute of Scientific and Technical Information of China (English)

    WANG Bing; WANG Qin; PENG Rui-hua; FU Yu-zhuo

    2008-01-01

    This paper proposes an asynchronous complex pipeline based on ARM-V3 instruction set. Muller pipeline structure is used as prototype, and the factors which may affect pipeline performance are analyzed. To balance the difficulty of asynchronous design and performance analysis, both complete asynchronous and partial asynchronous structures aere designed and compared. Results of comparison with the well-Rnown industrial product ARM922T verify that about 30% and 40% performance improvement of the partial and complete asynchronous complex pipelines can be obtained respectively. The design methodologies can also be used in the design of other asynchronous pipelines.

  20. Gesture Recognition Based on the Probability Distribution of Arm Trajectories

    Science.gov (United States)

    Wan, Khairunizam; Sawada, Hideyuki

    The use of human motions for the interaction between humans and computers is becoming an attractive alternative to verbal media, especially through the visual interpretation of the human body motion. In particular, hand gestures are used as non-verbal media for the humans to communicate with machines that pertain to the use of the human gestures to interact with them. This paper introduces a 3D motion measurement of the human upper body for the purpose of the gesture recognition, which is based on the probability distribution of arm trajectories. In this study, by examining the characteristics of the arm trajectories given by a signer, motion features are selected and classified by using a fuzzy technique. Experimental results show that the use of the features extracted from arm trajectories effectively works on the recognition of dynamic gestures of a human, and gives a good performance to classify various gesture patterns.

  1. A Parallax-based Distance Estimator for Spiral Arm Sources

    CERN Document Server

    Reid, M J; Menten, K M; Brunthaler, A

    2016-01-01

    The spiral arms of the Milky Way are being accurately located for the first time via trigonometric parallaxes of massive star forming regions with the BeSSeL Survey, using the Very Long Baseline Array and the European VLBI Network, and with the Japanese VERA project. Here we describe a computer program that leverages these results to significantly improve the accuracy and reliability of distance estimates to other sources that are known to follow spiral structure. Using a Bayesian approach, sources are assigned to arms based on their (l,b,v) coordinates with respect to arm signatures seen in CO and HI surveys. A source's kinematic distance, displacement from the plane, and proximity to individual parallax sources are also considered in generating a full distance probability density function. Using this program to estimate distances to large numbers of star forming regions, we generate a realistic visualization of the Milky Way's spiral structure as seen from the northern hemisphere.

  2. SOC 315 ASH Course Tutorial/Tutorialrank

    OpenAIRE

    emilyjessi

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 5 Times, Rating: A+   ASHFORD SOC 315 Week 1 Individual Assignment Cultural Background Summary ASHFORD SOC 315 Week 1 DQ 1 ASHFORD SOC 315 Week 1 DQ 2 ASHFORD SOC 315 Week 2 Individual Assignment Ethnocentrism Matrix ASHFORD SOC 315 Week 2 Individual Assignment Media Reaction Paper ASHFORD SOC 315 Week 2 DQ 1 and DQ 2 ASHFORD SOC 315 Week 3 Individual Assignment Intercultural Commu...

  3. SOC 333 UOP Course Tutorial/Tutorialrank

    OpenAIRE

    chloechlo

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 3 Times, Rating: A+     SOC 333 Week 1 Individual Assignment Gender Trait Chart SOC 333 Week 1 Individual Assignment Social Movements and Gender SOC 333 Week 1 DQ 1 SOC 333 Week 1 DQ 2 SOC 333 Week 1 DQ 3 SOC 333 Week 2 Individual Assignment Gender Role Analysis SOC 333 Week 2 DQ 1 SOC 333 Week 2 DQ 2 SOC 333 Week 3 Learning Team Assignment Gender and the Medi...

  4. SOC 203 ASH Course Tutorial/Tutorialrank

    OpenAIRE

    graceruby

    2015-01-01

    For more course tutorials visit   www.tutorialrank.com Tutorial Purchased: 5 Times, Rating: A+   SOC 203 Week 1 DQ 1 The Sociological Imagination SOC 203 Week 1 DQ 2 Homelessness SOC 203 Week 2 DQ 1 Education and Equality SOC 203 Week 2 DQ 2 Title IX SOC 203 Week 2 Final Paper Preparation SOC 203 Week 3 DQ 1 Hate Crimes SOC 203 Week 3 DQ 2 Prisons and the War on Drugs SOC 203 Week 3 The Interconnection of Social Problems SOC 203 We...

  5. Autonomous sensor-based dual-arm satellite grappling

    Science.gov (United States)

    Wilcox, Brian; Tso, Kam; Litwin, Todd; Hayati, Samad; Bon, Bruce

    1989-01-01

    Dual-arm satellite grappling involves the integration of technologies developed in the Sensing and Perception (S&P) Subsystem for object acquisition and tracking, and the Manipulator Control and Mechanization (MCM) Subsystem for dual-arm control. S&P acquires and tracks the position, orientation, velocity, and angular velocity of a slowly spinning satellite, and sends tracking data to the MCM subsystem. MCM grapples the satellite and brings it to rest, controlling the arms so that no excessive forces or torques are exerted on the satellite or arms. A 350-pound satellite mockup which can spin freely on a gimbal for several minutes, closely simulating the dynamics of a real satellite is demonstrated. The satellite mockup is fitted with a panel under which may be mounted various elements such as line replacement modules and electrical connectors that will be used to demonstrate servicing tasks once the satellite is docked. The subsystems are housed in three MicroVAX II microcomputers. The hardware of the S&P Subsystem includes CCD cameras, video digitizers, frame buffers, IMFEX (a custom pipelined video processor), a time-code generator with millisecond precision, and a MicroVAX II computer. Its software is written in Pascal and is based on a locally written vision software library. The hardware of the MCM Subsystem includes PUMA 560 robot arms, Lord force/torque sensors, two MicroVAX II computers, and unimation pneumatic parallel grippers. Its software is written in C, and is based on a robot language called RCCL. The two subsystems are described and test results on the grappling of the satellite mockup with rotational rates of up to 2 rpm are provided.

  6. Photoelectric radar servo control system based on ARM+FPGA

    Science.gov (United States)

    Wu, Kaixuan; Zhang, Yue; Li, Yeqiu; Dai, Qin; Yao, Jun

    2016-01-01

    In order to get smaller, faster, and more responsive requirements of the photoelectric radar servo control system. We propose a set of core ARM + FPGA architecture servo controller. Parallel processing capability of FPGA to be used for the encoder feedback data, PWM carrier modulation, A, B code decoding processing and so on; Utilizing the advantage of imaging design in ARM Embedded systems achieves high-speed implementation of the PID algorithm. After the actual experiment, the closed-loop speed of response of the system cycles up to 2000 times/s, in the case of excellent precision turntable shaft, using a PID algorithm to achieve the servo position control with the accuracy of + -1 encoder input code. Firstly, This article carry on in-depth study of the embedded servo control system hardware to determine the ARM and FPGA chip as the main chip with systems based on a pre-measured target required to achieve performance requirements, this article based on ARM chip used Samsung S3C2440 chip of ARM7 architecture , the FPGA chip is chosen xilinx's XC3S400 . ARM and FPGA communicate by using SPI bus, the advantage of using SPI bus is saving a lot of pins for easy system upgrades required thereafter. The system gets the speed datas through the photoelectric-encoder that transports the datas to the FPGA, Then the system transmits the datas through the FPGA to ARM, transforms speed datas into the corresponding position and velocity data in a timely manner, prepares the corresponding PWM wave to control motor rotation by making comparison between the position data and the velocity data setted in advance . According to the system requirements to draw the schematics of the photoelectric radar servo control system and PCB board to produce specially. Secondly, using PID algorithm to control the servo system, the datas of speed obtained from photoelectric-encoder is calculated position data and speed data via high-speed digital PID algorithm and coordinate models. Finally, a

  7. SOC Testing Methodology and Practice

    CERN Document Server

    Wu, Cheng-Wen

    2011-01-01

    On a commercial digital still camera (DSC) controller chip we practice a novel SOC test integration platform, solving real problems in test scheduling, test IO reduction, timing of functional test, scan IO sharing, embedded memory built-in self-test (BIST), etc. The chip has been fabricated and tested successfully by our approach. Test results justify that short test integration cost, short test time, and small area overhead can be achieved. To support SOC testing, a memory BIST compiler and an SOC testing integration system have been developed.

  8. SOC 402 ASH Course Tutorial/Tutorialrank

    OpenAIRE

    lucylily

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 5 Times, Rating: A   ASHFORD SOC 402 Week 1 DQ 1 Three Sociological Perspectives ASHFORD SOC 402 Week 1 DQ 2 Qualitative vs. Quantitative Research & the Methods of Social Research ASHFORD SOC 402 Week 2 DQ 1 McDonaldization ASHFORD SOC 402 Week 2 DQ 2 Generational Differences in the Workplace ASHFORD SOC 402 Week 2 Assignment Women and Flexibility in the Workplace ASHFORD SOC 402 ...

  9. 基于模拟的SoC功能验证研究%A Survey on Simulation Based Functional Verification of SoC

    Institute of Scientific and Technical Information of China (English)

    姚爱红; 孙盟哲; 袁莉娜

    2013-01-01

    Simulation-based verification remains holding dominance in the verification of SoC and other sophisticated digital systems.The generating speed and distributing quality of stimuli are crucial factors in the convergence progress of verification.Coverage metrics quantitate how much the verification process has been completed.Coverage-directed and constrained-random stimulus generation methods have been proposed to improve the productivity and automaticity of the verification process.Constrained random stimulus generation techniques are categorized into two groups according to whether the structure information of the design under verification being used.In this paper,a survey is made on the state of art of the key technologies in simulation based verification of SoC in the following aspects:constraint definition,stimulus generation,coverage analysis,IP core and inter-communication verification.And finally,the future trends and resarch directions are predicted.%基于模拟的验证技术在SoC等复杂数字系统功能验证中一直占据统治地位.模拟激励产生的速度和质量是决定验证过程收敛速度的关键因素,覆盖率信息定量地表示了验证完成的程度.覆盖率导向的受约束随机激励生成技术提高了验证过程的效率和自动化程度.按照是否需要待验证设计的内部结构信息,将受约束随机激励生成技术分为基于学习的激励生成和基于构造的激励生成两类并分别进行分析.对基于模拟的SoC功能验证涉及的其它关键技术如:约束定义、覆盖率分析及IP核及核间通信协议的功能验证等国内外研究现状进行了分析和总结,并对未来的发展趋势和研究方向进行了展望.

  10. 基于SoC的嵌入式DRAM存储器内建自测试设计%Embedded DRAM Memory BIST Design Based on SoC

    Institute of Scientific and Technical Information of China (English)

    田勇; 丁学君

    2012-01-01

    Built-in Self Test (BIST) is an important technology in testing embedded memory of System-on-Chip (SoC). However, the embedded memory testing is still facing many challenges with several testing algorithm using BIST techniques. This paper presents an embedded DRAM memory BIST design based on SoC with several testing algorithm. The designed test circuit can reuse state of the state machine, and can generate operation commands using Cyclic Shift Register (CSR) , and can generate the need addresses using the address generation circuit. The results show that the proposed embedded DRAM memory BIST design is a good compromise between the area overhead and the high fault coverage of the test circuit.%内建自测试(Built-in Self Test,BIST)是测试片上系统(System on- Chip,SoC)中嵌入式存储器的重要技术;但是,利用BIST技术采用多种算法对嵌入式存储器进行测试仍面临诸多挑战;对此,提出了一种基于SoC的可以带有多种测试算法的嵌入式DRAM存储器BIST设计,所设计的测试电路可以复用状态机的状态,利用循环移位寄存器(Cyclic Shift Register,CSR)产生操作命令,利用地址产生电路产生所需地址;通过对3种BIST电路支持的算法,全速测试,面积开销3个方面的比较,表明提出的嵌入式DRAM存储器BIST设计在测试时间,测试故障覆盖率和测试面积开销等各方面都取得了较好的性能.

  11. Design and Implementation of Submicron Level 10T Full Adder in ALU Using Cell Based and SOC Technology

    Directory of Open Access Journals (Sweden)

    K.Swathi

    2014-09-01

    Full Text Available As technology scales into the nanometer regime leakage current, active power, delay and area are becoming important metric for the analysis and design of complex circuits. The main concern in mobile and battery based systems are leakage current and power dissipation. A transistor resizing approach for 10 transistor single bit full adder cells is used to determine optimal sleep transistor size which reduces power dissipation and leakage current. A submicron level 10-transistor single bit full adder cell is considered to achieve low leakage current, reduced power dissipation and high speed. In this paper initially 10T full adder cell is designed with submicron technique and later this is employed to design an ALU adder unit. The modified ALU is simulated and synthesized successfully on cadence 180nm technology.

  12. Synthesis and integration of Fe-soc-MOF cubes into colloidosomes via a single-step emulsion-based approach

    KAUST Repository

    Pang, Maolin

    2013-07-17

    Bottom-up fabrication of complex 3D hollow superstructures from nonspherical building blocks (BBs) poses a significant challenge for scientists in materials chemistry and physics. Spherical colloidal silica or polystyrene particles are therefore often integrated as BBs for the preparation of an emerging class of materials, namely colloidosomes (using colloidal particles for Pickering stabilization and fusing them to form a permeable shell). Herein, we describe for the first time a one-step emulsion-based technique that permits the assembly of metal-organic framework (MOF) faceted polyhedral BBs (i.e., cubes instead of spheres) into 3D hollow superstructures (or "colloidosomes" ). The shell of each resultant hollow MOF colloidosome is constructed from a monolayer of cubic BBs, whose dimensions can be precisely controlled by varying the amount of emulsifier used in the synthesis. © 2013 American Chemical Society.

  13. Structural Optimization of Slender Robot Arm Based on Sensitivity Analysis

    Directory of Open Access Journals (Sweden)

    Zhong Luo

    2012-01-01

    Full Text Available An effective structural optimization method based on a sensitivity analysis is proposed to optimize the variable section of a slender robot arm. The structure mechanism and the operating principle of a polishing robot are introduced firstly, and its stiffness model is established. Then, a design of sensitivity analysis method and a sequential linear programming (SLP strategy are developed. At the beginning of the optimization, the design sensitivity analysis method is applied to select the sensitive design variables which can make the optimized results more efficient and accurate. In addition, it can also be used to determine the scale of moving step which will improve the convergency during the optimization process. The design sensitivities are calculated using the finite difference method. The search for the final optimal structure is performed using the SLP method. Simulation results show that the proposed structure optimization method is effective in enhancing the stiffness of the robot arm regardless of the robot arm suffering either a constant force or variable forces.

  14. A Parallax-based Distance Estimator for Spiral Arm Sources

    Science.gov (United States)

    Reid, M. J.; Dame, T. M.; Menten, K. M.; Brunthaler, A.

    2016-06-01

    The spiral arms of the Milky Way are being accurately located for the first time via trigonometric parallaxes of massive star-forming regions with the Bar and Spiral Structure Legacy Survey, using the Very Long Baseline Array and the European VLBI Network, and with the Japanese VLBI Exploration of Radio Astrometry project. Here we describe a computer program that leverages these results to significantly improve the accuracy and reliability of distance estimates to other sources that are known to follow spiral structure. Using a Bayesian approach, sources are assigned to arms based on their (l, b, v) coordinates with respect to arm signatures seen in CO and H i surveys. A source's kinematic distance, displacement from the plane, and proximity to individual parallax sources are also considered in generating a full distance probability density function. Using this program to estimate distances to large numbers of star-forming regions, we generate a realistic visualization of the Milky Way's spiral structure as seen from the northern hemisphere.

  15. Pain Control on Demand Based on Pulsed Radio-Frequency Stimulation of the Dorsal Root Ganglion Using a Batteryless Implantable CMOS SoC.

    Science.gov (United States)

    Hung-Wei Chiu; Mu-Lien Lin; Chii-Wann Lin; I-Hsiu Ho; Wei-Tso Lin; Po-Hsiang Fang; Yi-Chin Lee; Yeong-Ray Wen; Shey-Shi Lu

    2010-12-01

    This paper presents the implementation of a batteryless CMOS SoC with low voltage pulsed radio-frequency (PRF) stimulation. This implantable SoC uses 402 MHz command signals following the medical implanted communication system (MICS) standard and a low frequency (1 MHz) for RF power transmission. A body floating type rectifier achieves 84% voltage conversion ratio. A bi-phasic pulse train of 1.4 V and 500 kHz is delivered by a PRF driver circuit. The PRF parameters include pulse duration, pulse frequency and repetition rate, which are controllable via 402 MHz RF receiver. The minimal required 3 V RF Vin and 2.2 V VDDr is achieved at 18 mm gap. The SoC chip is fabricated in a 0.35 μm CMOS process and mounted on a PCB with a flexible spiral antenna. The packaged PRF SoC was implanted into rats for the animal study. Von Frey was applied to test the mechanical allodynia in a blinded manner. This work has successfully demonstrated that implanted CMOS SoC stimulating DRG with 1.4 V, 500 kHz PRF could significantly reduce spinal nerve ligation (SNL) induced mechanical allodynia for 3-7 days. PMID:23850752

  16. Development of Status Monitoring Agent System Based on the ARM9 and Linux System%基于ARM9和Linux系统的状态监测代理系统开发

    Institute of Scientific and Technical Information of China (English)

    韩卫东

    2013-01-01

    介绍了ARM嵌入式微处理器的特点和应用,并对嵌入式片上系统(SOC)技术进行了简单分析;重点阐述了基于ARM9核的SOC片上系统AtmelSAM9260的输电线路状态监测代理系统的硬件平台和软件系统设计.实现了在一个局部范围内管理和协同各类输电线路状态监测装置,并代替各类装置与主站系统进行安全的双向有线和无线GPRS数据通信,同时满足不同厂家、不同类型的甚至不同线路的一组监测装置的标准化、智能化、安全化接入.为科学规范的建设坚强智能电网输电线路状态监测系统打下基础.%The paper introduces the characteristics of the embedded ARM microprocessor and its application,and gives simple analysis of embedded chip system (SOC) technology.It mainly describes the hardware platform of transmission line state monitoring agent system based on ARM9 core SOC chip system AtmelSAM9260 t and the design of software system.The state monitoring device is managed in a local scope and is coordinated with all kinds of transmission lines,and it replaces all kinds of safety two-way cable and wireless GPRS data communication between various devices and master station system,At the same time,it is able to make standard,intelligent and secure access of a group of monitoring devices with different manufacturers,with different types or with even different line.This will lay the foundation for the construction of state monitoring system of intelligent power grid transmission line.

  17. The SOC Model of Forest Fires Based on Energy Random Distribution%基于能量随机分布的特大森林火灾SOC模型

    Institute of Scientific and Technical Information of China (English)

    杨帆; 杨青

    2014-01-01

    Through the analysis of the features of forest fire events,and its.evolution law,the extra large forest fires SOC (Self-Organized Criticality,SOC for short) model is presented based on energy random distribution.It better simulates the evolution process of extra large forest fires,and the result is close to the actual process of the extra large forest fires outbreak.Then the situational inference and small energy release mode are built based on the SOC model.Finally using multi-agents simulation technology,and extra large forest fire in Australia at 2009 as a prototype,the result shows that it represents the evolution of the extra large forest fires really,and shows they can work as fire control methods of changing the fire extinguishing efficiency or small energy release mode.%在分析森林火灾事件的特征、事件演变规律的基础上,提出了一种基于能量随机分布的特大森林火灾SOC (Self-Organized Criticality,简称SOC)模型,较好地模拟了特大森林火灾的演化过程,与实际的特大森林火灾爆发过程也比较吻合,并基于此构建了情景推演和小规模能量释放模型,最后运用多智能体仿真技术,以2009年澳大利亚森林火灾为原型进行模拟,结果很好地再现了特大森林火灾的演化过程,以及显示了灭火效率、小规模能量释放的方式对火灾的控制作用.

  18. ARM Processor Based Embedded System for Remote Data Acquisition

    Directory of Open Access Journals (Sweden)

    Raj Kumar Tiwari

    2014-01-01

    Full Text Available The embedded systems are widely used for the data acquisition. The data acquired may be used for monitoring various activity of the system or it can be used to control the parts of the system. Accessing various signals with remote location has greater advantage for multisite operation or unmanned systems. The remote data acquisition used in this paper is based on ARM processor. The Cortex M3 processor used in this system has in-built Ethernet controller which facilitate to acquire the remote data using internet. The system developed provides high performance, low power consumption, smaller size {&} high speed

  19. Development of the Embedded Protective Device Based on ARM

    Institute of Scientific and Technical Information of China (English)

    LIU Xiao-wen; LI Na; PAN Chun-de

    2005-01-01

    An embedded protective device for 35kV power line is worked out based on Philips' LPC2292 ARM MCU. Several aspects such as embedded design technique adopted in the system framework, application of adaptive theory in data acquisition, Board Support Packet (BSP) developing and task dispatching related to operating system are discussed. Both hardware and software framework of the system are given. Advanced hardware platform and software development environment is applied in design of the system, with the advanced co-design technology.

  20. A car theft deterrent system research based on ARM9

    Science.gov (United States)

    Zhang, Kaisheng; Liu, Jinhao; Fan, Lijun

    2009-07-01

    The traditional automotive burglarproof systems commonly only rely on the simple remote control to security which measures are not perfect and functions are too single. With the development of society, people tend to concern on the fingerprint recognition technology, GSM /GPRS wireless transmission technology, the idea of ARM9-based design of automobile burglarproof system is dependent on both of them. The S3C2410 microprocessor embedded system is used in this system, which is illuminated the idea of the control system design through the hardware and software. The spot use indicates that the high control precision, steady performance and the humanistic rational design of automotive burglarproof system.

  1. Control Strategy of SOC Open-Loop of Hybrid Electric Bus Based on Driving Cycle Prediction%基于道路工况预测混合动力公交车SOC开环控制策略

    Institute of Scientific and Technical Information of China (English)

    朱道伟; 谢辉; 严英

    2012-01-01

    混合动力车辆一般采用基于荷电状态(SOC)闭环的控制策略,对蓄电池组进行频繁充电,使SOC维持在较高水平,影响制动能量的回收,从而导致燃油经济性不理想.为此,利用BP神经网络并结合城市公交运行特点,提出SOC开环控制策略,对公交车未来站点间的运行工况进行预测,减少蓄电池组的充电次数,降低蓄电池组的荷电状态.试验表明,采用该控制策略可以显著降低电池组充电时间和次数,有利于制动能量的回收,百公里油耗降低了3%.%The conventional strategy of hybrid electric vehicle was based on the state of charge (SOC) closed-loop which charged the battery frequently to sustain a high-level SOC and decreased the fuel efficiency because the energy from the regenerative braking couldn't be stored any more. SOC open-loop control strategy was proposed using the BP neural network and considering the trait of city bus to predict the next driving cycles between two stops in short future. Experiment result shows that the control strategy is useful to decrease charging times and time-period, which improve fuel efficiency by 3% higher than the vehicle on the route with the control strategy of SOC closed-loop because of enhanced regenerative braking energy.

  2. Video and graphics fusion system based on SoC in cockpit display system%基于SoC的机载显示器视频图形融合处理系统

    Institute of Scientific and Technical Information of China (English)

    钟海林; 曹峰; 高伟林; 张锋

    2016-01-01

    为了满足机载显示器对综合视频图形处理技术的需求,提出了一种基于SoC嵌入式处理平台的机载视频图形融合显示与视频记录系统实现方法。该方法以 SoC为核心搭建硬件平台,使用 SoC内部集成 ARM处理器和视频图形协处理单元执行图形生成算法与外视频采集,配合SoC片上高速存储和显示接口,采用双缓存与多线程并发机制实现视频图形融合显示和外视频实时记录。本方法支持多种格式分辨率的视频源采集和大分辨率图形同步生成。实验结果表明,采用该系统技术后机载显示器采集1024×768分辨率外视频同时生成1920×1080分辨率图形时,融合处理后帧率可达45 fps,能够满足机载显示器实时显示需求。%In order to satisfy the demand for integrated video and graphics processing technique in a cockpit display system,a method about airborne video graphics fusion display and video recording sys-tem based on SoC is proposed in this paper.Hardware platform is designed based on SoC.The graph-ics generation algorithms and video acquisition are performed by ARM processor and video graphics assist processor integrated in SoC.A double buffer and multi thread concurrent mechanism is designed to realize video graphics fusion display and real-time recording of video in cooperation with high speed storage and display interface integrated in SoC.Multiple formats resolution video source acquisition and large resolution graphics generation are supported by the proposed method.Experiments show that when capturing with 1 024×768 resolution video and generating with 1 920×1 080 resolution graphics,the fame rate is 45 fps,which satisfies the requirements of the cockpit display system.

  3. Arm7 Based Evolution in Vehicle Mobility and Automation

    Directory of Open Access Journals (Sweden)

    Mr. N. S. Vaidya

    2013-09-01

    Full Text Available The “Arm7 Based Evolution In Vehicle Mobility And Automation”, various sensor is used to detect various parameters of the vehicle system like Temperature sensor is used to detect engine temperature, Light sensor is used to switch on head light at night automatically, proximity sensor are used for driver as well as driver side seat belt wearing information, figure print sensor are used to open the vehicle as well as start the car. Micro serial data card reader is used here to work as a black box of the vehicle, whenever accident happen it can give all the last information which is stored in to memory card to the investigator, which is easy to detect the cause of accident. The smartness of this vehicle is to tell all the information or sensor output data audibly to the vehicle owner or driver and driver side seat passenger. All the things can be controlled by one system which is ARM7 and information is also displayed on LCD monitor

  4. A Requirement for SOCS-1 and SOCS-3 Phosphorylation in Bcr-Abl-Induced Tumorigenesis

    Directory of Open Access Journals (Sweden)

    Xiaoxue Qiu

    2012-06-01

    Full Text Available Suppressors of cytokine signaling 1 and 3 (SOCS-1 and SOCS-3 are inhibitors of the Janus tyrosine kinase (JAK/signal transducers and activators of transcription (STAT pathway and function in a negative feedback loop during cytokine signaling. Abl transformation is associated with constitutive activation of JAK/STAT-dependent signaling. However, the mechanism by which Abl oncoproteins bypass SOCS inhibitory regulation remains poorly defined. Here, we demonstrate that coexpression of Bcr-Abl with SOCS-1 or SOCS-3 results in tyrosine phosphorylation of these SOCS proteins. Interestingly, SOCS-1 is highly tyrosine phosphorylated in one of five primary chronic myelogenous leukemia samples. Bcr-Abl-dependent tyrosine phosphorylation of SOCS-1 and SOCS-3 occurs mainly on Tyr 155 and Tyr 204 residues of SOCS-1 and on Tyr 221 residue of SOCS-3. We observed that phosphorylation of these SOCS proteins was associated with their binding to Bcr-Abl. Bcr-Abl-dependent phosphorylation of SOCS-1 and SOCS-3 diminished their inhibitory effects on the activation of JAK and STAT5 and thereby enhanced JAK/STAT5 signaling. Strikingly, disrupting the tyrosine phosphorylation of SOCS-1 or SOCS-3 impaired the expression of Bcl-XL protein and sensitized K562 leukemic cells to undergo apoptosis. Moreover, selective mutation of tyrosine phosphorylation sites of SOCS-1 or SOCS-3 significantly blocked Bcr-Abl-mediated tumorigenesis in nude mice and inhibited Bcr-Abl-mediated murine bone marrow transformation. Together, these results reveal a mechanism of how Bcr-Abl may overcome SOCS-1 and SOCS-3 inhibition to constitutively activate the JAK/STAT-dependent signaling, and suggest that Bcr-Abl may critically requires tyrosine phosphorylation of SOCS-1 and SOCS-3 to mediate tumorigenesis when these SOCS proteins are present in cells.

  5. The simple art of SoC design

    CERN Document Server

    Keating, Michael

    2011-01-01

    This book tackles head-on the challenges of digital design in the era of billion-transistor SoCs. It discusses fundamental design concepts in design and coding required to produce robust, functionally correct designs. It also provides specific techniques for measuring and minimizing complexity in RTL code. Finally, it discusses the tradeoff between RTL and high-level (C-based) design and how tools and languages must progress to address the needs of tomorrow's SoC designs.

  6. Simulation of Octopus Arm Based on Coupled CPGs

    Directory of Open Access Journals (Sweden)

    Juan Tian

    2015-01-01

    Full Text Available The octopus arm has attracted many researchers’ interests and became a research hot spot because of its amazing features. Several dynamic models inspired by an octopus arm are presented to realize the structure with a large number of degrees of freedom. The octopus arm is made of a soft material introducing high-dimensionality, nonlinearity, and elasticity, which makes the octopus arm difficult to control. In this paper, three coupled central pattern generators (CPGs are built and a 2-dimensional dynamic model of the octopus arm is presented to explore possible strategies of the octopus movement control. And the CPGs’ signals treated as activation are added on the ventral, dorsal, and transversal sides, respectively. The effects of the octopus arm are discussed when the parameters of the CPGs are changed. Simulations show that the octopus arm movements are mainly determined by the shapes of three CPGs’ phase diagrams. Therefore, some locomotion modes are supposed to be embedded in the neuromuscular system of the octopus arm. And the octopus arm movements can be achieved by modulating the parameters of the CPGs. The results are beneficial for researchers to understand the octopus movement further.

  7. 基于LabVIEW的锂电池监测系统及SOC预测研究%Lithium battery monitoring system based on LabVIEW and research on the prediction of SOC

    Institute of Scientific and Technical Information of China (English)

    陈林; 张持健; 殷安龙; 许矛盾

    2016-01-01

    In order to realize the real-time monitoring of battery parameters and the prediction of SOC. In this paper, the battery monitoring system is developed based on single chip and LabVIEW platform. With LM algorithm, build the SOC prediction model based on BP neural network and use sample data to experiment the model. Through continuous learning, the SOC predicted by BP neural network approach the actual SOC gradually. The results show that the system can display the real-time parameters of battery and store data;the prediction model realized the high nonlinear mapping between the input and the output of lithium battery, the model has high precision and is feasible.%为了实现对电池参数的实时监测和SOC的预测,中文以单片机和LabVIEW平台开发出一套电池管理系统。采用LM算法,建立了基于BP神经网络的锂电池SOC预测模型,利用样本数据进行模型实验。通过不断的学习,BP神经网络预测的SOC逐渐逼近实际的SOC。结果表明,该系统能实时显示电池参数,实现数据存储;该预测模型实现了锂电池SOC预测中输入与输出之间的高度非线性映射,预测精度高,具有可行性。

  8. Variation tolerant SoC design

    Science.gov (United States)

    Kozhikkottu, Vivek J.

    performance distribution. This task is particularly complex and challenging due to the inter-dependencies between components' execution, indirect effects of shared resources, and interactions between multiple system-level "execution paths". We argue that accurate variation-aware performance analysis requires Monte-Carlo based repeated system execution. Our proposed analysis framework leverages emulation to significantly speedup performance analysis without sacrificing the generality and accuracy achieved by Monte-Carlo based simulations. Our experiments show performance improvements of around 60x compared to state-of-the-art hardware-software co-simulation tools and also underscore the framework's potential to enable variation-aware design and exploration at the system level. Our second contribution addresses the problem of designing variation-tolerant SoCs using recovery based design, a popular circuit design paradigm that addresses variations by eliminating guard-bands and operating circuits at close to "zero margins" while detecting and recovering from timing errors. While previous efforts have demonstrated the potential benefits of recovery based design, we identify several challenges that need to be addressed in order to apply this technique to SoCs. We present a systematic design framework to apply recovery based design at the system level. We propose to partition SoCs into "recovery islands", wherein each recovery island consists of one or more SoC components that can recover independent of the rest of the SoC. We present a variation-aware design methodology that partitions a given SoC into recovery islands and computes the optimal operating points for each island, taking into account the various trade-offs involved. Our experiments demonstrate that the proposed design framework achieves an average of 32% energy savings over conventional worst-case designs, with negligible losses in performance. The third contribution of this thesis introduces disproportionate

  9. Kinect-Based Sliding Mode Control for Lynxmotion Robotic Arm

    Directory of Open Access Journals (Sweden)

    Ismail Ben Abdallah

    2016-01-01

    Full Text Available Recently, the technological development of manipulator robot increases very quickly and provides a positive impact to human life. The implementation of the manipulator robot technology offers more efficiency and high performance for several human’s tasks. In reality, efforts published in this context are focused on implementing control algorithms with already preprogrammed desired trajectories (passive robots case or trajectory generation based on feedback sensors (active robots case. However, gesture based control robot can be considered as another channel of system control which is not widely discussed. This paper focuses on a Kinect-based real-time interactive control system implementation. Based on LabVIEW integrated development environment (IDE, a developed human-machine-interface (HMI allows user to control in real time a Lynxmotion robotic arm. The Kinect software development kit (SDK provides a tool to keep track of human body skeleton and abstract it into 3-dimensional coordinates. Therefore, the Kinect sensor is integrated into our control system to detect the different user joints coordinates. The Lynxmotion dynamic has been implemented in a real-time sliding mode control algorithm. The experimental results are carried out to test the effectiveness of the system, and the results verify the tracking ability, stability, and robustness.

  10. Arm locking for space-based laser interferometry gravitational wave observatories

    OpenAIRE

    Yu, Yinan; Mitryk, Shawn; Mueller, Guido

    2014-01-01

    Laser frequency stabilization is a critical part of the interferometry measurement system of space-based gravitational wave observatories such as the Laser Interferometer Space Antenna (LISA). Arm locking as a proposed frequency stabilization technique, transfers the stability of the long arm lengths to the laser frequency. The arm locking sensor synthesizes an adequately filtered linear combination of the inter-spacecraft phase measurements to estimate the laser frequency noise, which can be...

  11. Zigbee GPS Based Tracking System Using ARM 9

    Directory of Open Access Journals (Sweden)

    Y. Pavan Kumar Reddy

    2013-05-01

    Full Text Available Real Time person tracking is an important building block in advanced humanoid robots. The applications extend to small area security system like offices, hospitals, prisons, industries etc. There are various methods and some of them are now used in smart mobile applications using GSM-GPS, Sensor networks, vision based tracking system etc. But these are expensive to be used in day-to-day life. As far as concerned with the security systems the investments are high and in the case of humanoids the monitoring system is too huge for an automated machine. To overcome these issues, a simple hardware build-up is proposed. The proposed system is Real Time person location detection and tracking system consisting of ZIGBEE modules and GPS interfaced to ARM9 development board with an RTOS (WinCE or Embedded LINUX. The whole system has two parts namely Monitoring system and the Tags. Monitoring system acts as a server which processes the data received from the tags. Tags are match box size devices transmitting the locations based data to the monitoring system. This system has its own advantages of small size, Low power consumption, range flexibility and GUI. The measured results indicate that the developed system can track a person up to 20m with an accuracy of 5m

  12. A Media Player Based On ARM by Porting of Linux

    OpenAIRE

    Archan Agrawal*; Mrs. Monika S. Joshi

    2014-01-01

    This paper describes the porting of embedded linux on ARM 9 platform for designing and implementing of embedded media player on S3Cmini2440 development board. A novel transplating method for linux kernel is presented here, Linux kernel as well as its cut,compile,and porting process under ARM platform are introduced. Optimized linux operating system in the processor has been installed and transplanted the SDL_FFMPEG library into S3Cmini2440 after the cross compilation. Ofthis whole...

  13. 基于ARM+FPGA的GPS接收机设计%Design of a GPS receiver based on ARM and FPGA

    Institute of Scientific and Technical Information of China (English)

    邢增强; 李金海; 梁华庆; 汪峰; 阎跃鹏

    2011-01-01

    The GPS receiver based on ARM and FPGA is designed for civilian and military application. The GP2015 chip is used as the receiver' s RF front-end. The AT91SAM9261 chip based on ARM9 core and The Cyclone Ⅱ seriers EP2C70F672I8 chip are used as the base-band processing part. Also the receiver' s software design is explained,including the capture engine,tracking engine,demodulation messages,and position resolution. Through the field test, the receiver's positioning precision is 6m ( longitude)/8m ( latitude ), and the dynamic performance is 2000m/s. The receiver can achieve high dynamic navigation and positioning. It has small size, low power consumption.%针对GPS接收机在民用和军事领域的重要应用,设计了一种基于ARM+ FPGA的GPS接收机.接收机的射频前端采用GP2015芯片,基带处理部分采用ARM9内核的A191 SAM9261芯片和CycloneⅡ系列的EP2C70F67218芯片.同时阐述来接收机的软件设计,包括捕获引擎、跟踪引擎、解调电文,定位解算等.该接收机通过现场实验定位精度为6m(经度)/8m(纬度),动态性能达2000m/s,可以实现高动态导航定位,同时体积小,功耗低.

  14. Digital Signature Based Fax Machine Using ARM9 and Linux

    Directory of Open Access Journals (Sweden)

    Ch. Komali

    2013-01-01

    Full Text Available In this method we are having the S3C2240A (ARM9 Board which is ported with Linux in it. And this ARM9 board with Linux will be connected to the Touch Screen device. This ARM9 board intern will be connected to the LAN network (Ethernet. To design this fax machine we are using two Arm controller boards. One Arm board will keep at fax Transmission side and another board will keep at fax receiving side. By using the Ethernet we will send and receive the fax, for that we are using TCP/IP server and TCP/IP client. In this fax machine we have too many options on touch screen of arm like retrieve, sign, send, save etc. By selecting the retrieve option we can see the received text data on touch screen. If we want to transmit text data, we can select send option, then the fax will sent to the destination. On the receiving side, the received fax will be displayed on LCD touch screen. If necessary, we can sign directly on the touch panel by selecting the sign option. If we want to retransmit that signed document, we should active server. In this way bidirectional transmission and reception is possible

  15. Wind Power Smoothing Method Using Hybrid Energy Storage System Based on SOC Hierarchical Optimization%基于荷电状态分级优化的混合储能风电功率平抑方法

    Institute of Scientific and Technical Information of China (English)

    邹见效; 戴碧蓉; 彭超; 辛晓帅; 骆伍巧

    2013-01-01

    为了弥补单一储能技术的不足,由超级电容和储能电池组成的混合储能系统越来越多地应用于风电功率平抑。为保证混合储能系统整体充放能力,并充分利用超级电容反应快和储能电池容量大的特点,文中提出了一种基于电池荷电状态(SOC)分级优化的混合储能系统风电功率平抑方法。该方法采用了分层结构,包含优化控制层和协调控制层。优化控制层根据风电平抑性能要求以及混合储能系统当前整体SOC,计算动态调节储能系统的设定功率;协调控制层根据储能设备各自的SOC和充放电特性,按优化控制层计算出的设定功率进行功率分配,以实现对设定功率的快速跟踪。仿真实验证明,该方法在保持风电平抑效果不变的情况下,维持了混合储能系统整体较高的充放能力,同时优化了储能设备的SOC,避免了储能设备的过充过放。%Hybrid energy storage,consisting of super capacitor and battery,has been widely applied to smooth wind power fluctuation because it can overcome the disadvantage of single energy storage technology.To ensure reliable charging and discharging performance of hybrid energy storage and fully take advantage of the characteristic of fast reaction of super capacitors and large capacity batteries,this paper proposes a wind power smoothing method using hybrid energy storage system based on hierarchical optimization of state of charge (SOC).This method adopts two-layer distributed control structure, including optimizing control layer and coordinated control layer.In the optimizing control layer,the target power of dynamic adjustment energy storage system is calculated according to the performance requirements of wind power smoothing and the current SOC of the system.In coordinated control layer,power distribution strategy is decided according to the SOC and charging and discharging characteristics of the energy storage devices and the target power

  16. LabVIEW For ARM Based System Automation

    Directory of Open Access Journals (Sweden)

    Ms. Sneha Goyanka

    2014-09-01

    Full Text Available Embedded Systems are hardware and software components working together to perform a specific application. They exist in abundance in our modern society and play a vital role in our everyday lives. Automation has entered in every part of life. Industries, buildings, machines almost every system has been automated and efforts for automating every system is going on. Programmable Logic Controllers (PLCs represent state-of-the-art microprocessor-based electronics that make up technologically advanced control systems with applications in virtually every segment of industry where automation is required. PLC has evolved as an important controller in industries these days because of its simplicity and robustness. It is used for controlling many mechanical movements of the heavy machines or to control the voltage and frequency of the power supplies. This paper presents a design for embedded PLC, and its use for system automation. The development of the embedded PLC is done with the combination of the LabVIEW software’s embedded module and the ARM Microcontroller. This PLC is flexible, robust, compatible to industrial components, cost effective and scalable to new technology

  17. Settling-velocity specific SOC distribution on hillslopes

    Science.gov (United States)

    Hu, Yaxian; Asefaw Berhe, Asmeret; Fogel, Marilyn L.; Heckrath, Goswin J.; Kuhn, Nikolaus J.

    2016-04-01

    The net effect of soil erosion by water, as a sink or source of atmospheric CO2, is determined by the spatial (re-)distribution and stability of eroded soil organic carbon (SOC). The depositional position of eroded SOC is a function of the transport distances of soil fractions where the SOC is stored. In theory, the transport distances of soil fractions are related to their settling velocities under given flow conditions. Yet, very few field investigations have been conducted to examine the actual movement of eroded soil fractions along hillslopes, let alone the re-distribution pattern of SOC fractions. Eroding sandy soils and sediment were sampled after a series of rainfall events along a slope on a freshly seeded cropland in Jutland, Denmark. All the soil samples were fractionated into five settling classes using a settling tube apparatus. The spatial distribution of soil settling classes shows a coarsening effect immediately below the eroding slope, followed by a fining trend at the slope tail. The δ13C values of soil fractions were more positive at the footslope than on the slope shoulder or at the slope tail, suggesting enhanced decomposition rate of fresh SOC input at the footslope during or after erosion-induced transport. Overall, our results illustrate that immediate deposition of fast settling soil fractions and the associated SOC at footslopes must be appropriately accounted for in attempts to quantify the role of soil erosion in terrestrial carbon sequestration. A SOC erodibility parameter based on actual settling velocity distribution of eroded fractions is needed to better calibrate soil erosion models.

  18. Innovative Design of Plastic Bottle Recycling Box Based on ARM

    Directory of Open Access Journals (Sweden)

    Yuedong Xiong

    2014-04-01

    Full Text Available Aiming at the problems of on-site plastic bottles recycling and the reuse of waste, the automatic recycling system was developed on the basis of ARM. As the main controller, ARM not only controls the mechanical system of the collector to recover and break plastic bottles, but also communicates with and rewards the user by the automatic reward system through the wireless network. The experimental prototype test results show: post treated fragments of plastic bottles are small, which are convenient to transport and take advantage of; the operation of recovery is easy, and the interface of man-machine interaction is friendly which is easy to expand functions.

  19. ETHERNET PACKET PROCESSOR FOR SOC APPLICATION

    Directory of Open Access Journals (Sweden)

    Raja Jitendra Nayaka

    2012-07-01

    Full Text Available As the demand for Internet expands significantly in numbers of users, servers, IP addresses, switches and routers, the IP based network architecture must evolve and change. The design of domain specific processors that require high performance, low power and high degree of programmability is the bottleneck in many processor based applications. This paper describes the design of ethernet packet processor for system-on-chip (SoC which performs all core packet processing functions, including segmentation and reassembly, packetization classification, route and queue management which will speedup switching/routing performance. Our design has been configured for use with multiple projects ttargeted to a commercial configurable logic device the system is designed to support 10/100/1000 links with a speed advantage. VHDL has been used to implement and simulated the required functions in FPGA.

  20. 基于SOC nRF24LE1的采煤机无线遥控系统的设计%Design of a remote control system for shearers based on SOC nRF24LE1

    Institute of Scientific and Technical Information of China (English)

    陈斯; 赵同彬; 游春霞

    2012-01-01

    A remote control system for the shearer was designed based on 2.4 GHz wireless SOC chip nRF24LE1.The system used nRF24LE1 as the core,and consisted of three parts that were palmtop remote controller,onboard transceiver and onboard PLC.The onboard transceiver collected all working parameters of the shearer and transmitted the data to the palmtop remote controller in wireless way,then the data displayed on LCD in real-time.At the same time,when receiving the button instructions,the onboard transceiver controlled all kinds of shearer actions by the onboard PLC.With the embedded high-performance microprocessors intelligent RF transceiver SOC chip nRF24LE1,the system possessed the features such as low cost,low power consumption and stable performance etc.%基于2.4GHz无线SOC芯片nRF24LE1设计了一种采煤机无线遥控系统。系统以nRF24LE1为核心,包括掌上摇控器、机载收发装置和机载PLC三部分。机载收发装置采集采煤机的各种工作参数,通过无线方式将数据传送至掌上遥控器,并实时显示在LCD上。机载收发装置接收到按键指令后,经机载PLC装置来控制采煤机的各种动作。由于采用了高性能的嵌入式微处理器智能射频收发SOC芯片nRF24LE1,系统具有低成本、低功耗及性能稳定等特点。

  1. Optical Sensors Based on Single Arm Thin Film Waveguide Interferometer

    Science.gov (United States)

    Sarkisov, S. S.; Diggs, D.; Curley, M.; Adamovsky, Grigory (Technical Monitor)

    2001-01-01

    Single-arm double-mode double-order optical waveguide interferometer utilizes interference between two propagating modes of different orders. Sensing effect results from the change in propagation conditions of the modes caused by the environment. The waveguide is made as an open asymmetric slab structure containing a dye-doped polymer film onto a fused quartz substrate. It is more sensitive to the change of environment than its conventional polarimetric analog using orthogonal modes (TE and TM) of the same order. The sensor still preserves the option of operating in polarimetric regime using a variety of mode combinations such as TE(sub 0)/TM(sub 0) (conventional), TE(sub 0)/TM(sub 1), TE(sub 1)/TM(sub 0), or TE(sub 1)/TM(sub 1) but can also work in nonpolarimetric regime using combinations TE(sub 0)/TM(sub 1) or TE(sub 0)/TM(sub 1). Utilization of different mode combinations simultaneously makes the device more versatile. Application of the sensor to gas sensing is based on doping polymer film with an organic indicator dye sensitive to a particular gas. Change of optical absorption spectrum of the dye caused by the gaseous pollutant results change of the reactive index of the dye-doped polymer film that can be detected by the sensor. As an indicator dyes, we utilize Bromocresol Purple doped into polymer poly(methyl) methacrylate, which shows a reversible growth of the absorption peak neat 600 nm after exposure to wet ammonia. We have built a breadboard prototype of the sensor with He-Ne laser as a light source and with a single mode fiber input and a multimode fiber output. The prototype showed sensitivity to temperature change of the order of 2 C per one full oscillation of the signal. The sensitivity of the sensor to the presence of wet ammonia is 200 ppm per one full oscillation of the signal. The further improvements include switching to a longer wavelength laser source (750-nm semiconductor laser), substitution of poly(methyl) methacrylate with hydrophilic

  2. SOC 315 ash course tutorial/tutorial rank

    OpenAIRE

    hfjui

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 5 Times, Rating: A+   ASHFORD SOC 315 Week 1 Individual Assignment Cultural Background Summary ASHFORD SOC 315 Week 1 DQ 1 ASHFORD SOC 315 Week 1 DQ 2 ASHFORD SOC 315 Week 2 Individual Assignment Ethnocentrism Matrix ASHFORD SOC 315 Week 2 Individual Assignment Media Reaction Paper ASHFORD SOC 315 Week 2 DQ 1 and DQ 2 ASHFORD SOC 315 Week 3 Individual Assignment Intercultural Commu...

  3. Arm locking for space-based laser interferometry gravitational wave observatories

    CERN Document Server

    Yu, Yinan; Mueller, Guido

    2014-01-01

    Laser frequency stabilization is a critical part of the interferometry measurement system of space-based gravitational wave observatories such as the Laser Interferometer Space Antenna (LISA). Arm locking as a proposed frequency stabilization technique, transfers the stability of the long arm lengths to the laser frequency. The arm locking sensor synthesizes an adequately filtered linear combination of the inter-spacecraft phase measurements to estimate the laser frequency noise, which can be used to control the laser frequency. At the University of Florida we developed the hardware-based University of Florida LISA Interferometer Simulator (UFLIS) to study and verify laser frequency noise reduction and suppression techniques under realistic LISA-like conditions. These conditions include the variable Doppler shifts between the spacecraft, LISA-like signal travel times, optical transponders, realistic laser frequency and timing noise. We review the different types of arm locking sensors and discuss their expect...

  4. SOC 203 uop course tutorial/tutorial rank

    OpenAIRE

    hiolnv

    2015-01-01

    For more course tutorials visit   www.tutorialrank.com Tutorial Purchased: 5 Times, Rating: A+   SOC 203 Week 1 DQ 1 The Sociological Imagination SOC 203 Week 1 DQ 2 Homelessness SOC 203 Week 2 DQ 1 Education and Equality SOC 203 Week 2 DQ 2 Title IX SOC 203 Week 2 Final Paper Preparation SOC 203 Week 3 DQ 1 Hate Crimes SOC 203 Week 3 DQ 2 Prisons and the War on Drugs SOC 203 Week 3 The Interconnection of Social Problems SOC 203 We...

  5. DNA gridiron nanostructures based on four-arm junctions.

    Science.gov (United States)

    Han, Dongran; Pal, Suchetan; Yang, Yang; Jiang, Shuoxing; Nangreave, Jeanette; Liu, Yan; Yan, Hao

    2013-03-22

    Engineering wireframe architectures and scaffolds of increasing complexity is one of the important challenges in nanotechnology. We present a design strategy to create gridiron-like DNA structures. A series of four-arm junctions are used as vertices within a network of double-helical DNA fragments. Deliberate distortion of the junctions from their most relaxed conformations ensures that a scaffold strand can traverse through individual vertices in multiple directions. DNA gridirons were assembled, ranging from two-dimensional arrays with reconfigurability to multilayer and three-dimensional structures and curved objects.

  6. A Vibration Control Method for the Flexible Arm Based on Energy Migration

    Directory of Open Access Journals (Sweden)

    Yushu Bian

    2015-01-01

    Full Text Available A vibration control method based on energy migration is proposed to decrease vibration response of the flexible arm undergoing rigid motion. A type of vibration absorber is suggested and gives rise to the inertial coupling between the modes of the flexible arm and the absorber. By analyzing 1 : 2 internal resonance, it is proved that the internal resonance can be successfully created and the exchange of vibration energy is existent. Due to the inertial coupling, the damping enhancement effect is revealed. Via the inertial coupling, vibration energy of the flexible arm can be dissipated by not only the damping of the vibration absorber but also its own enhanced damping, thereby effectively decreasing vibration. Through numerical simulations and analyses, it is proven that this method is feasible in controlling nonlinear vibration of the flexible arm undergoing rigid motion.

  7. 基于ARM&FPGA的CCD图像识别装置%CCD Image Recognition Apparatus Based on ARM and FPGA

    Institute of Scientific and Technical Information of China (English)

    胡胜; 杨雷; 宋跃; 胡必武; 李君

    2012-01-01

    A sort of design technique of CCD image recognition apparatus was presented. This apparatus regarded ARM and FPGA as master control chip. Concurrent control multiple channel data acquisition of CCD image signal based on Nios II and many core based on Nios II were devised. This paper mainly introduced the design of LCD drive based on Nios II for realizing LCD display , the design of A/D sampling control module for realizing multiple channel data acquisition, the design of SL811HS drive for realizing USB correspondence of ARM and PC and so on. Experiments show that this system has the advantages of high application value,high rate,high reliability and less accident.%给出了一种CCD图像识别装置的设计方法,该装置以ARM与FPGA为主控芯片,设计了基于Nios Ⅱ的A/D控制模块并行控制多路CCD图像信号的数据采集和基于Nios Ⅱ的多种内核,重点介绍了基于Nios Ⅱ的LCD驱动以实现液晶显示、设计A/D采样控制模块以实现多路数据采集以及设计SL811HS驱动以实现ARM与PC的USB通信等.实验结果表明系统具有应用价值高、速度高、可靠性高、故障少等优点.

  8. A real-time SOC estimation method of LiFePO4 Li-ion battery based on LPV model%基于LPV模型的磷酸铁锂电池SOC实时算法

    Institute of Scientific and Technical Information of China (English)

    郑燕萍; 杜政平; 吴松松; 陈宁

    2014-01-01

    The state of charge(SOC) of power battery takes an important role in the control strategy and battery management of electric vehicle .Firstly ,taking LiFePO4 Li-ion battery as the research ob-ject ,a novel real-time SOC estimation method based on linear parameter-varying(LPV) model is pro-posed .Secondly ,the battery equivalent circuit model is established by the battery performance test , and the nonlinear system of battery is converted to LPV system in which the state space matrix is a function of battery’s measurable variable .And the filter algorithm is designed to achieve real-time SOC estimation of LiFePO4 Li-ion battery .Finally ,the simulation model is established in Matlab and the results verify the feasibility and accuracy of the proposed method .%动力电池荷电状态(SOC)值是电动汽车整车控制策略和电池管理系统中的一个重要参数。文章以磷酸铁锂动力电池为研究对象,提出基于线性变参数(L PV )模型的电池SOC实时估算方法。该方法在电池特性试验研究的基础上,建立电池等效电路模型,将电池非线性系统转换为L PV系统,将其状态空间系数矩阵作为电池可测量的函数,设计滤波器算法,实现磷酸铁锂动力电池SOC的实时估算。利用M atlab软件建立该算法的仿真模型,仿真结果验证了SOC实时估算方法的可行性和准确性。

  9. Research on Compound Display Connections to ARM Based Processors

    Directory of Open Access Journals (Sweden)

    T J V Subrahmanyeswara Rao

    2011-09-01

    Full Text Available An electronic display is used to present data visually by transmitting images as output device. Visual displays generate visual information according to the electrical input signal either by generation of light or modulation of available light. This is of two types analog or digital. Now-a-days usage of many displays gaining wide acceptance in many areas of applications like Workstations, Information Broad casting, video conferencing etc. connecting two or more displays to a personal computer is possible by adding extra hardware and accordingly software like device drivers which are often expensive. Power supply requirement for this dedicated task is almost same as personal computer which runs with various applications. In this paper we have implemented multiple display connection modes to an ARM processor and achieved great reduction of power supply for this dedicated task.

  10. SOC 402 ash course tutorial/tutorial rank

    OpenAIRE

    numre

    2015-01-01

    ASHFORD SOC 402 Week 1 DQ 1 Three Sociological Perspectives ASHFORD SOC 402 Week 1 DQ 2 Qualitative vs. Quantitative Research & the Methods of Social Research ASHFORD SOC 402 Week 2 DQ 1 McDonaldization ASHFORD SOC 402 Week 2 DQ 2 Generational Differences in the Workplace ASHFORD SOC 402 Week 2 Assignment Women and Flexibility in the Workplace ASHFORD SOC 402 Week 3 DQ 1 Retirement ASHFORD SOC 402 Week 3 DQ 2 Sexual Harassment ASHFORD SOC 402 Week 3 Assignment Outline...

  11. Synthesis and application of rhodamine-based fluorescent probe dyes with spacer linker arm

    Institute of Scientific and Technical Information of China (English)

    Yong Gao; Jian Li Li; Zhen Shi

    2007-01-01

    When rhodamine-based fluorescent probe dyes are used to track target molecules they always perturb the behavior of target molecules because of steric hindrance effect.In order to minimize potential steric problems, a kind of rhodamine-based fluorescent probe dye with spacer linker arm was designed and synthesized and its application in immunofluorescence histochemistry was investigated.

  12. Contrasting effects of deep ploughing of croplands and forests on SOC stocks and SOC bioavailability

    Science.gov (United States)

    Alcántara, Viridiana; Don, Axel; Vesterdal, Lars; Well, Reinhard; Nieder, Rolf

    2016-04-01

    Subsoils are essential within the global C cycle since they have a high soil organic carbon (SOC) storage capacity due to a high SOC saturation deficit. However, measures for enhancing SOC stocks commonly focus on topsoils. We assessed the long-term stability of topsoil SOC buried in cropland and forest subsoils by deep ploughing. Deep ploughing was promoted until the 1970s for breaking up hardpan and improving soil structure to optimize crop growth conditions. In forests deep ploughing is performed as a site preparation measure for afforestation of sandy soil aiming at increasing water availability in deeper layers and decreasing weed competition by burial of seeds. An effect of deep ploughing was the translocation of topsoil SOC into subsoils, with a concomitant mixing of SOC-poor subsoil material into the "new" topsoil horizon. Deep ploughed croplands and forests represent unique long-term "in-situ incubations" of SOC-rich material in subsoils in order to assess the effect of soil depth on SOC turnover. In this study, we sampled soil from five loamy and five sandy cropland sites as well as from five sandy forest sites, which were ploughed to 55-127 cm depth 25 to 53 years ago. Adjacent, equally managed but conventionally ploughed or not ploughed (forests) subplots were sampled as reference. On average 45 years after the deep ploughing operation, at the cropland sites, the deep ploughed soils contained 42±13 Mg ha‑1 more SOC than the reference subplots down to 100 cm depth. On the contrary, at the forest sites, the SOC stocks of the deep ploughed soils contained 18±9 Mg ha‑1 less SOC compared to the reference soils on average 38 years deep ploughing. These contrasting results can be explained, on the one hand, by the slower SOC accumulation in the newly formed topsoils of the deep ploughed forest soil (on average 48% lower SOC stocks in topsoil) compared to the croplands (on average 15% lower SOC stocks in topsoil). On the other hand, the buried topsoils at

  13. SOC NANOBASED INTEGRATED WIRELESS SENSOR SYSTEM

    Directory of Open Access Journals (Sweden)

    Penghua Sun

    2014-11-01

    Full Text Available Smart nanotechnology materials have been recently utilized in sensing applications. Carbon nanotube (CNT based SoC sensor systems have potential applications in various fields, including medical, energy, consumer electronics, computers, and HVAC (heating, ventilation, and air conditioning among others. In this study, a nanotechnology multisensory system was designed and simulated using Labview Software. The mathematical models were developed for sensing three physical quantities: temperature, gas, and pressure. Four CNT groups on a chip (two for gas sensor, one for temperature, and a fourth one for pressure were utilized in order to perform sensing multiple parameters. The proposed fabrication processes and the materials used were chosen to avoid the interference of these parameters on each other when detecting one of them. The simulation results were translated into analog voltage from Labview software, transmitted via Bluetooth network, and received on desktop computers within the vicinity of the sensor system. The mathematical models and simulation results showed as high as 95% accuracy in measuring temperature, and the 5% error was caused from the interference of the surrounding gas. Within 7% change in pressure was impacted by both temperature and gas interference.

  14. Cost Modeling for SOC Modules Testing

    Directory of Open Access Journals (Sweden)

    Balwinder Singh

    2013-08-01

    Full Text Available The complexity of the system design is increasing very rapidly as the number of transistors on Integrated Circuits (IC doubles as per Moore’s law.There is big challenge of testing this complex VLSI circuit, in which whole system is integrated into a single chip called System on Chip (SOC. Cost of testing the SOC is also increasing with complexity. Cost modeling plays a vital role in reduction of test cost and time to market. This paper includes the cost modeling of the SOC Module testing which contains both analog and digital modules. The various test cost parameters and equations are considered from the previous work. The mathematical relations are developed for cost modeling to test the SOC further cost modeling equations are modeled in Graphical User Interface (GUI in MATLAB, which can be used as a cost estimation tool. A case study is done to calculate the cost of the SOC testing due to Logic Built in Self Test (LBIST and Memory Built in Self Test (MBIST. VLSI Test engineers can take the benefits of such cost estimation tools for test planning.

  15. Development of control system for multi-converter high voltage power supply using programmable SoC

    International Nuclear Information System (INIS)

    Multi-converter based High Voltage Power Supplies (HVPSs) find application in multi-megawatt accelerators, RF systems. Control system for HVPS must be a combination of superior parallel processing, real time performance, fast computation and versatile connectivity. The hardware platform is expected to be robust, easily scalable for future developments without any cost overhead. Typical HVPS control mechanism involves communication, generation of precise control signals/pulses for few hundred Nos of chopper and closed loop control in microsecond range for regulated output. Such kind of requirements can be met with Zynq All Programmable SoC, which is a combination of Dual core ARM Cortex A-9 Processing System (PS) and Xilinx 7 series FPGA based Programmable Logic (PL). Deterministic functions of power supply control system such as generation of control signals with precise inter-channel delay of nanosecond range and communication with individual chopper at 100kbps can be implemented on PL. PS should implement corrective tasks based on field feedback received from individual chopper, user interface and OS management that allows to take full advantage of system capabilities. PS and PL are connected with on-chip AXI-4 interface with low latency and higher bandwidth through 9 AXI ports. Typically PS boots first, this ensures secure booting and prevents external environment from tampering PL. This paper describes development of control system on Zynq All Programmable SoC for HVPS. (author)

  16. Test access to deeply embedded analog terminals within an A/MS SoC

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    This paper presents a standard scalable and reconfigurable design for testability (SR DfT) in order to increase accessibility to deeply embedded A/MS cores and to limit application of costly off-chip mixed-signal testers. SR DfT is an oscillation-based wrapper compatible with digital embedded core-based SoC test methodologies. The impact of the optimized oscillation-based wrapper design on MS SoC testing is evaluated in two directions: area and test time. Experimental results are presented for several SoCs from the ITC'02 test benchmarks with inclusion of eight analog filters.

  17. Online Monitoring System Design of Intelligent Circuit Breaker Based on DSP and ARM

    Directory of Open Access Journals (Sweden)

    Meng Song

    2014-08-01

    Full Text Available In order to accurately analyze the dynamic characteristics of the vacuum circuit breaker, a dual-core master-slave processor structure for online monitoring system based on DSP and ARM is proposed. This structure consists of host computer, lower computer and signal processing modules. The lower computer uses DSP as the core, which completes acquisition and data preprocessing of circuit breaker’s dynamic characteristics through sensors and signal conditioning circuits. The host computer uses ARM as the core which is responsible for task management, analysis, processing and displaying collected data via Ethernet. The communication between DSP and ARM is conducted by HPI. This design improves the reliability of intelligent control unit for the circuit breaker. The experiment showed that this system works steadily and accuracy.

  18. The design of multi-channel pulse amplitude analyzer based on ARM micro controller

    International Nuclear Information System (INIS)

    It introduces the design of multi-channel pulse amplitude analyzer based on embedded ARM micro-controller. The embedded and real-time system μC/OS-II builds up the real-time and stability of the system and advances the integration. (authors)

  19. Testing the SOC hypothesis for the magnetosphere

    CERN Document Server

    Watkins, N W; Chapman, S C; Dendy, R O

    2001-01-01

    As noted by Chang, the hypothesis of Self-Organised Criticality provides atheoretical framework in which the low dimensionality seen in magnetosphericindices can be combined with the scaling seen in their power spectra and therecently-observed plasma bursty bulk flows. As such, it has considerableappeal, describing the aspects of the magnetospheric fuelling:storage:releasecycle which are generic to slowly-driven, interaction-dominated, thresholdedsystems rather than unique to the magnetosphere. In consequence, several recentnumerical "sandpile" algorithms have been used with a view to comparison withmagnetospheric observables. However, demonstration of SOC in the magnetospherewill require further work in the definition of a set of observable propertieswhich are the unique "fingerprint" of SOC. This is because, for example, ascale-free power spectrum admits several possible explanations other than SOC. A more subtle problem is important for both simulations and data analysiswhen dealing with multiscale and hen...

  20. [A surgical navigation system based on C-arm fluoroscopy images].

    Science.gov (United States)

    Qian, Liwei; Yan, Shijun; Xia, Qing; Wang, Chengtao

    2009-10-01

    A surgical navigation system based on X-rays of C-arm with a calibration target has been studied and developed. Extracting images of markers in the two templates on the calibration target, the system is able to establish the relationship between different markers coordinates in different coordinate systems using the algorithm based on the layout of specific markers. The correction of X-ray image distortion and C-arm camera calibration are performed using the images of calibration target as bases. After the parameters of the C-arm projection model being determined, an X-ray image of surgical site will be acquired preoperatively; the surgical instruments will be tracked by the optical position system, and then virtual projections of instruments can be formed on preoperative images. Surgeons will perform operations with the guidance of the system. The C-arm can be used less frequently and the X-ray radiation can be reduced. Cadaveric spine specimen experiments and error analysis have underpinned the clinical feasibility of the system.

  1. 基于MSC-51单片机的智能压力变送器%Design of the intelligent pressure transducer based on 51 SOC

    Institute of Scientific and Technical Information of China (English)

    张秀国

    2013-01-01

    Along with the requirements of industrial application of signal detection and transmission continues to improve,new intelligent instrument will play more and more important role in the market.Based on the analysis of the basic principle of pressure transducer on the work under the new situation,according to the production requirements,design a data acquisition circuit,the intelligent pressure transmitter MSC-51 microcontroller watchdog circuit and interface circuit based on.And design the corresponding algorithm of data collection,communication protocol and software function.%随着工业应用对信号检测与传输的要求不断提高,新型智能仪表将在市场中占有越来越重要的地位.本文在分析压力变送器基本工作原理的基础上,针对新形势下的生产要求,设计了基于MSC-51单片机的智能压力变送器的数据采集电路、看门狗电路以及接口电路.并设计了相应的数据采集算法、通信协议以及其他软件功能.

  2. Design of H. 264 Video Decoder SoC Based on OpenRISC1200%基于OpenRISC1200的H.264视频解码器片上系统设计

    Institute of Scientific and Technical Information of China (English)

    杨媛; 冯谋朝; 高勇; 刘宏泰

    2011-01-01

    For its high compression ratio and high image quality, the next-generation compression standard H. 264 is much favorite, and integrating H. 264 into SoC (System on chip) has become an inevitable trend. Based on open source free 32 bit OpenRISC1200 CPU, a H. 264 decoder SoC system is designed. In the system OpenRISC1200 is acted as the core control module,all other peripheral modules, including H. 264 decoder modules, JTAG module, UART modules,DMA module, SDRAM, FL ASH module communicate with CPU through the on-chip Wishbone bus. In the hardware and software co-design, the reading, decoding and format conversion of H.264 video images are carried out, and the video images are displayed on CRT with VGA interfacefinally. The hardware and software co-verification of the system is realized in Altera's FPGA EP2C70F672 on, and the experiment results show that the system can achieve 30 f/s QCIF format video image real-time decoding requirement.%新一代的压缩标准H.264以其高压缩率与高图像质量而备受青睐,将H.264集成于SoC(片上系统Sys-tern on chip)已成为必然的发展趋势.基于开源免费的32位OpenRISC1200 CPU,设计了H.264解码器SoC系统,系统以OpenRISC1200为核心控制模块,其他所有外围模块包括H.264解码器模块、JTAG模块、UART模块、DMA模块、SDRAM、FLASH模块等均通过Wishbone片上总线与CPU通信.在软硬件的协同工作下,系统完成H.264视频图像的读取、解码和格式转换,最后通过VGA接口在CRT显示器上进行视频图像的显示.所设计的系统在Altera公司的FPGA EP2C70F672上进行了软硬件的协同验证,结果表明系统可以达到30 f/s的QCIF格式视频图像实时解码要求.

  3. 基于断言的SoC设计验证方法%Assertion Based Verification Methodology of SoC Design

    Institute of Scientific and Technical Information of China (English)

    董杨鑫; 郑建宏

    2007-01-01

    随着SoC(System on-a-Chip)设计规模的指数增长,验证时的模拟时间也变得越来越长,已经到了令人无法忍受的地步.因此如何进行有效、充分的验证,尤其是功能验证已经成为SoC设计方法学中重要的内容.本文将要介绍的基于断言的验证(Assertion Based Verification,ABV)是SoC设计功能验证的一种有效的方法,能够有效地提高验证效率.

  4. Design of Objects Tracking System Based on ARM Embedded Platform

    Institute of Scientific and Technical Information of China (English)

    XU Mei; SONG Yong-duan; LV Shao-dong; LIU Zhi-long; HUANG Cong-ying

    2014-01-01

    In recent years, according to the need of intelligent video surveillance system increasing rapidly in metropolitan cities ,a design based on S3C2440 microprocessor and embedded Linux operating system is adopted for real-time video target tracking. However, it is very challenging as embedded systems usually afford limited processing power and limited resources. Therefore, to address this problem, a real-time tracking algorithm using multi-features based on compressive sensing is proposed and implemented. The algorithm uses multiple matrix as the projection matrix of the compressive sensing and the compressed date as the multiple features to extract useful information needed by tracking process. Functions and libraries in OpenCV which were developed by Intel Corporation are utilized for building the tracking algorithms. It is tested with variant video sequences and the results show that the algorithm achieves stable tracking for the target moved of the light changed.

  5. SpaceWire- Based Control System Architecture for the Lightweight Advanced Robotic Arm Demonstrator [LARAD

    Science.gov (United States)

    Rucinski, Marek; Coates, Adam; Montano, Giuseppe; Allouis, Elie; Jameux, David

    2015-09-01

    The Lightweight Advanced Robotic Arm Demonstrator (LARAD) is a state-of-the-art, two-meter long robotic arm for planetary surface exploration currently being developed by a UK consortium led by Airbus Defence and Space Ltd under contract to the UK Space Agency (CREST-2 programme). LARAD has a modular design, which allows for experimentation with different electronics and control software. The control system architecture includes the on-board computer, control software and firmware, and the communication infrastructure (e.g. data links, switches) connecting on-board computer(s), sensors, actuators and the end-effector. The purpose of the control system is to operate the arm according to pre-defined performance requirements, monitoring its behaviour in real-time and performing safing/recovery actions in case of faults. This paper reports on the results of a recent study about the feasibility of the development and integration of a novel control system architecture for LARAD fully based on the SpaceWire protocol. The current control system architecture is based on the combination of two communication protocols, Ethernet and CAN. The new SpaceWire-based control system will allow for improved monitoring and telecommanding performance thanks to higher communication data rate, allowing for the adoption of advanced control schemes, potentially based on multiple vision sensors, and for the handling of sophisticated end-effectors that require fine control, such as science payloads or robotic hands.

  6. Arm Orthosis/Prosthesis Movement Control Based on Surface EMG Signal Extraction.

    Science.gov (United States)

    Suberbiola, Aaron; Zulueta, Ekaitz; Lopez-Guede, Jose Manuel; Etxeberria-Agiriano, Ismael; Graña, Manuel

    2015-05-01

    This paper shows experimental results on electromyography (EMG)-based system control applied to motorized orthoses. Biceps and triceps EMG signals are captured through two biometrical sensors, which are then filtered and processed by an acquisition system. Finally an output/control signal is produced and sent to the actuators, which will then perform the actual movement, using algorithms based on autoregressive (AR) models and neural networks, among others. The research goal is to predict the desired movement of the lower arm through the analysis of EMG signals, so that the movement can be reproduced by an arm orthosis, powered by two linear actuators. In this experiment, best accuracy has achieved values up to 91%, using a fourth-order AR-model and 100ms block length.

  7. Vision based motion planning of humanoid robot arm for grasping task

    International Nuclear Information System (INIS)

    This paper presents the robust and efficient motion control approach for a redundant humanoid arm of BHR-02 (Beijing Humanoid Robot-02). This work is based on the numerical algorithm for computing the Inverse Kinematics of redundant arm and stereo based vision system to detect the pose and position of target object. Forward recursion formula with backward cycle computation method is used to reach in the vicinity of target object. Then BFS (Broyden Fletcher Shanno) method is then used to grasp object in real-time. Vision is a very important non contact sensor for humanoid robots. A method combining visual feed forward and visual feedback is proposed. Visual feed forward facilitates the reach in the vicinity of the object and reduces the manipulation time. Visual feedback increases the robustness by compensating the weak calibration errors. Effectiveness of the proposed strategy is proved through experiments. (author)

  8. Comparison Study on the Battery SoC Estimation with EKF and UKF Algorithms

    Directory of Open Access Journals (Sweden)

    Hongwen He

    2013-09-01

    Full Text Available The battery state of charge (SoC, whose estimation is one of the basic functions of battery management system (BMS, is a vital input parameter in the energy management and power distribution control of electric vehicles (EVs. In this paper, two methods based on an extended Kalman filter (EKF and unscented Kalman filter (UKF, respectively, are proposed to estimate the SoC of a lithium-ion battery used in EVs. The lithium-ion battery is modeled with the Thevenin model and the model parameters are identified based on experimental data and validated with the Beijing Driving Cycle. Then space equations used for SoC estimation are established. The SoC estimation results with EKF and UKF are compared in aspects of accuracy and convergence. It is concluded that the two algorithms both perform well, while the UKF algorithm is much better with a faster convergence ability and a higher accuracy.

  9. First experience with particle-in-cell plasma physics code on ARM-based HPC systems

    Science.gov (United States)

    Sáez, Xavier; Soba, Alejandro; Sánchez, Edilberto; Mantsinen, Mervi; Mateo, Sergi; Cela, José M.; Castejón, Francisco

    2015-09-01

    In this work, we will explore the feasibility of porting a Particle-in-cell code (EUTERPE) to an ARM multi-core platform from the Mont-Blanc project. The used prototype is based on a system-on-chip Samsung Exynos 5 with an integrated GPU. It is the first prototype that could be used for High-Performance Computing (HPC), since it supports double precision and parallel programming languages.

  10. The Redundant Arm Self-motion Control Based on Self-tuning Fuzzy PID Controller

    Institute of Scientific and Technical Information of China (English)

    Liu Yu(刘宇); Sun Lining; Du Zhijiang

    2004-01-01

    A fuzzy control algorithm based on self-tuning PID proportional factor is presented. To a certain degree, it overcomes robot motion control's nonlinearity and uncertainty caused by joints coupled and friction, and decreases overshoot of end manipulator's tracking desired curves. The controller's structure is very simple but effective. With this control method, a 7-DOF redundant arm's self-motion developed by the authors is investigated. Research results show that the said controller restrains track overshoot and possesses preferable merits.

  11. Performance benefits of telerobotics and teleoperation - enhancements for an arm-based tank waste retrieval system

    International Nuclear Information System (INIS)

    This report evaluates telerobotic and teleoperational arm-based retrieval systems that require advanced robotic controls. These systems will be deployed in waste retrieval activities in Hanford's Single Shell Tanks (SSTs). The report assumes that arm-based, retrieval systems will combine a teleoperational arm and control system enhanced by a number of advanced and telerobotic controls. The report describes many possible enhancements, spanning the full range of the control spectrum with the potential for technical maturation. The enhancements considered present a variety of choices and factors including: the enhancements to be included in the actual control system, safety, detailed task analyses, human factors, cost-benefit ratios, and availability and maturity of technology. Because the actual system will be designed by an offsite vendor, the procurement specifications must have the flexibility to allow bidders to propose a broad range of ideas, yet build in enough restrictions to filter out infeasible and undesirable approaches. At the same time they must allow selection of a technically promising proposal. Based on a preliminary analysis of the waste retrieval task, and considering factors such as operator limitations and the current state of robotics technology, the authors recommend a set of enhancements that will (1) allow the system to complete its waste retrieval mission, and (2) enable future upgrades in response to changing mission needs and technological advances

  12. Performance benefits of telerobotics and teleoperation - enhancements for an arm-based tank waste retrieval system

    Energy Technology Data Exchange (ETDEWEB)

    Horschel, D.S. [Sandia National Labs., Albuquerque, NM (United States); Gibbons, P.W. [Westinghouse Hanford Co., Richland, WA (United States); Draper, J.V. [Oak Ridge National Lab., TN (United States)] [and others

    1995-06-01

    This report evaluates telerobotic and teleoperational arm-based retrieval systems that require advanced robotic controls. These systems will be deployed in waste retrieval activities in Hanford`s Single Shell Tanks (SSTs). The report assumes that arm-based, retrieval systems will combine a teleoperational arm and control system enhanced by a number of advanced and telerobotic controls. The report describes many possible enhancements, spanning the full range of the control spectrum with the potential for technical maturation. The enhancements considered present a variety of choices and factors including: the enhancements to be included in the actual control system, safety, detailed task analyses, human factors, cost-benefit ratios, and availability and maturity of technology. Because the actual system will be designed by an offsite vendor, the procurement specifications must have the flexibility to allow bidders to propose a broad range of ideas, yet build in enough restrictions to filter out infeasible and undesirable approaches. At the same time they must allow selection of a technically promising proposal. Based on a preliminary analysis of the waste retrieval task, and considering factors such as operator limitations and the current state of robotics technology, the authors recommend a set of enhancements that will (1) allow the system to complete its waste retrieval mission, and (2) enable future upgrades in response to changing mission needs and technological advances.

  13. Wireless Video Surveillance System Based on ARM11%基于ARM11的无线视频监控系统

    Institute of Scientific and Technical Information of China (English)

    王刚; 毛剑飞; 田青; 毛飞飞

    2011-01-01

    This paper designs a wireless video surveillance system based on ARM 11 and Linux operating system. To improve processing speed, the system adopts ARM 11 as the main processor, and the video capturing equipment is OV9650 camera, also uses hard-coding to compress the video data with H.264. Then it can transfer encoded data to remote server and display that. It realizes a wireless video surveillance platform, which has stable running, quick speed, lower expenditure and small volume. It has great practical value.%设计了一种基于ARM11+Linux系统组成的无线视频监控系统.为提高运算速度,系统采用ARM11微处理器S3C6410作为主处理器,采用OV9650摄像头作为图像采集设备,用硬编码方式对图像数据进行H264编码.接着通过WI-FI无线网络和RTP流媒体传输协议把已编码的数据传送到远端的服务器上显示.实现了运行稳定、速度快、成本低、体积小的无线视频监控平台,具有很大的实用价值.

  14. 基于65 nm工艺的SOC物理设计中的关键技术研究%Research on the critical technology of SOC physical design based on 65GP

    Institute of Scientific and Technical Information of China (English)

    沈良伟

    2013-01-01

    With the evolution of process, the development of integrated circuit has turned into ultra-deep submicron stage. Some problems such as the cost, performance, power consumption, signal integrity have become the critical issues in SOC (system on chip) design. Based on the module level physical design of 65GP technology in practical program, and in ultra-deep submicron, some key problems in the back-end of physical design of the chip are studied in detail, such as low-cost, congestion and signal integrity. Some new methods and new ideas are put forward, thus the delivery quality of sign off is improved and satisifed the requirements of tapeout.%  随工艺的演进,集成电路发展已经进入超深亚微米阶段,芯片的成本、性能、功耗、信号完整性等问题将成为制约SOC芯片设计的关键问题。文章基于65GP工艺的实际项目模块级物理设计,在现超深亚微米下,对芯片的低功耗、congestion、信号完整性等后端物理设计等关键问题进行了细致研究,并提出了一些新方法和新思想,从而提高了signoff的交付质量,完成了tapeout要求。

  15. Developing an ARM based GNU/Linux Operating System for Single Board Computer – Cubietruck

    Directory of Open Access Journals (Sweden)

    S.Pravin Kumar

    2014-12-01

    Full Text Available The design and implementation of a Monolithic-Kernel Single Board Computer (SBC - Cubietruck GNU/Linux-like operating system on ARM platform in technical details, including boot loader design - UBOOT, building the Kernel - uImage, design of root file system and init process. The Single Board Computer Operating System (SBC OS is developed on Linux platform with GNU tool chain. The SBC OS can be used for both SBC system application development and related curriculum teaching. Single Board Computer like embedded system related curriculums are already become necessary components for undergraduate computer majors. The system is mainly designed for the purpose of technical research and curriculum based teaching and students to learn, study and more readable, of which the source codes can be provided to students, guiding them to design tiny operating system on ARM platform from scratch.

  16. Petri net-based scheduling of time constrained single-arm cluster tools with wafer revisiting

    Directory of Open Access Journals (Sweden)

    ZiCheng Liu

    2016-05-01

    Full Text Available It is very difficult to schedule a single-arm cluster tool with wafer revisiting such that wafer residency time constraints are satisfied. This article conducts a study on this challenging problem for a single-arm cluster tool with atomic layer deposition process. With a so-called p-backward strategy being applied, a Petri net model is developed to describe the dynamic behavior of the system. Based on the model, the existence of a feasible schedule is analyzed, schedulability conditions are derived, and scheduling algorithms are presented if there is a schedule. A schedule is obtained by simply setting the robot waiting time if schedulable, and it is very computationally efficient. The obtained schedule is shown to be optimal. Illustrative examples are given to demonstrate the proposed approach.

  17. SOC 402 ash course tutorial/tutorial rank

    OpenAIRE

    buiop

    2015-01-01

                    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 5 Times, Rating: A   ASHFORD SOC 402 Week 1 DQ 1 Three Sociological Perspectives ASHFORD SOC 402 Week 1 DQ 2 Qualitative vs. Quantitative Research & the Methods of Social Research ASHFORD SOC 402 Week 2 DQ 1 McDonaldization ASHFORD SOC 402 Week 2 DQ 2 Generational Differences in the Workplace A...

  18. Portable voice-service group call system based on ARM-Linux%基于ARM-Linux的便携式语音群呼系统

    Institute of Scientific and Technical Information of China (English)

    钱莹晶; 张仁民

    2014-01-01

    In order to improve office efficiency and realize the intelligent life, the portable voice-service group call system based on the ARM-Linux is designed. This system is composed of ARM processor (S3C2440), GSM module (TC35i) and voice module (UDA1341). The recorded speech is played through the GSM module controlled by AT instruction coming from ARM. Test results show that this system can record speech, set up call numbers, dial playback and display the unsuccessful numbers automatically. The system has the advantages of friendly interface, simple operation and low cost.%为了提高办公的效率和实现人民生活的智能化,研制了一种基于 ARM-Linux 的便携式语音业务群呼系统。系统以 S3C2440为处理器、TC35i 为GSM 模块、UDA1341为语音芯片, ARM 处理器通过 AT 指令控制 GSM 模块将录制好的语音业务进行群呼。测试结果表明,该系统具有录入话音、设置呼叫号码、自动拨号放音和统计未呼叫成功号码等功能,系统操作简单、界面友好、成本低廉。

  19. Trajectory control of an articulated robot with a parallel drive arm based on splines under tension

    Science.gov (United States)

    Yi, Seung-Jong

    Today's industrial robots controlled by mini/micro computers are basically simple positioning devices. The positioning accuracy depends on the mathematical description of the robot configuration to place the end-effector at the desired position and orientation within the workspace and on following the specified path which requires the trajectory planner. In addition, the consideration of joint velocity, acceleration, and jerk trajectories are essential for trajectory planning of industrial robots to obtain smooth operation. The newly designed 6 DOF articulated robot with a parallel drive arm mechanism which permits the joint actuators to be placed in the same horizontal line to reduce the arm inertia and to increase load capacity and stiffness is selected. First, the forward kinematic and inverse kinematic problems are examined. The forward kinematic equations are successfully derived based on Denavit-Hartenberg notation with independent joint angle constraints. The inverse kinematic problems are solved using the arm-wrist partitioned approach with independent joint angle constraints. Three types of curve fitting methods used in trajectory planning, i.e., certain degree polynomial functions, cubic spline functions, and cubic spline functions under tension, are compared to select the best possible method to satisfy both smooth joint trajectories and positioning accuracy for a robot trajectory planner. Cubic spline functions under tension is the method selected for the new trajectory planner. This method is implemented for a 6 DOF articulated robot with a parallel drive arm mechanism to improve the smoothness of the joint trajectories and the positioning accuracy of the manipulator. Also, this approach is compared with existing trajectory planners, 4-3-4 polynomials and cubic spline functions, via circular arc motion simulations. The new trajectory planner using cubic spline functions under tension is implemented into the microprocessor based robot controller and

  20. Mapping SOC in a river catchment by integrating laboratory spectra wavelength with remote sensing spectra

    DEFF Research Database (Denmark)

    Peng, Yi; Xiong, Xiong; Knadel, Maria;

    There is potential to use soil ·-proximal and remote sensing derived spectra concomitantly to develop soil organic carbon (SOC) models. Yet mixing spectral data from different sources and technologies to improve soil models is still in its infancy. The objective of this study was to incorporate...... soil spectral features indicative of SOC from laboratory visible near-infrared reflectance (vis-NlR) spectra and incorporate them with remote sensing (RS) images to improve predictions of top SOC in the Skjem river catchment, Denmark. The secondary objective was to improve prediction results...... by separately calibrating samples from upland and wetland. We hypbthesize that final prediction accuracy is significantly improved by incorporatin1 laboratory vis-NlR images upscaled from point-based spectra to catchment scale and RS data for topsoil SOC spatial modeling....

  1. Transport-distance specific SOC distribution: Does it skew erosion induced C fluxes?

    DEFF Research Database (Denmark)

    Hu, Yaxian; Berbe, Asmerat Asefaw; Fogel, Marilyn L.;

    2016-01-01

    Abstract The net effect of soil erosion by water, as a sink or source of atmospheric carbon dioxide (CO2), is determined by the spatial (re-)distribution and stability of eroded soil organic carbon (SOC), and the dynamic replacement of eroded C by the production of new photosynthate...... emissions during or immediately after transport, must be appropriately accounted for in attempts to quantify the role of soil erosion in terrestrial C sequestration. A SOC erodibility parameter based on actual settling velocity distribution of eroded fractions is needed to better calibrate soil erosion....... The depositional position of eroded SOC is a function of the transport distances of soil fractions where the SOC is stored. In theory, the transport distances of soil fractions are related to their settling velocities under given flow conditions. Yet, very few field investigations have been conducted to examine...

  2. Self-Administered, Home-Based SMART (Sensorimotor Active Rehabilitation Training) Arm Training: A Single-Case Report.

    Science.gov (United States)

    Hayward, Kathryn S; Neibling, Bridee A; Barker, Ruth N

    2015-01-01

    This single-case, mixed-method study explored the feasibility of self-administered, home-based SMART (sensorimotor active rehabilitation training) Arm training for a 57-yr-old man with severe upper-limb disability after a right frontoparietal hemorrhagic stroke 9 mo earlier. Over 4 wk of self-administered, home-based SMART Arm training, the participant completed 2,100 repetitions unassisted. His wife provided support for equipment set-up and training progressions. Clinically meaningful improvements in arm impairment (strength), activity (arm and hand tasks), and participation (use of arm in everyday tasks) occurred after training (at 4 wk) and at follow-up (at 16 wk). Areas for refinement of SMART Arm training derived from thematic analysis of the participant's and researchers' journals focused on enabling independence, ensuring home and user friendliness, maintaining the motivation to persevere, progressing toward everyday tasks, and integrating practice into daily routine. These findings suggest that further investigation of self-administered, home-based SMART Arm training is warranted for people with stroke who have severe upper-limb disability.

  3. Multimodal System Based on Electrooculography and Voice Recognition to Control a Robot Arm

    Directory of Open Access Journals (Sweden)

    José A. Martínez

    2013-07-01

    Full Text Available People with severe motor disorders cannot use their arms and/or hands to interact with the environment. In such cases, a human‐machine interface can be used to allow these people to perform activities of daily life. Voice recognition would be the best method to control a device devoted to help with these tasks, but this method is very dependent on the background noise and, under certain circumstances, it cannot be used successfully. In this sense, other methods must be included in the system to assist the voice recognition module. In this project, electrooculography (EOG has been selected due to its stability and robustness. This way, a multimodal system based on EOG and voice recognition has been developed to control a robotic arm. This paper presents the procedures designed to combine both methods to create a multimodal interface useful for disabled people. Tests presented in this document compare the skills of five different users while controlling the robotic arm to perform pick‐and‐place tasks. Task duration and accuracy have been measured to obtain specific scores that are used to evaluate both interaction methods independently and the multimodal combination of them. The system works successfully using both methods (EOG and voice recognition. In addition, the multimodal interface improves robustness and reduces the uncertainty generated by the environment when there is background noise.

  4. [Wearable Medical Devices' MCU Selection Analysis Based on the ARM Cortex-MO+ Architecture].

    Science.gov (United States)

    Wu, Zaoquan; Liu, Mengxing; Qin, Liping; Ye, Shuming; Chen, Hang

    2015-03-01

    According to the characteristics of low cost, high performance, high integration and long battery life of wearable medical devices, the mainstream low-power microcontroller(MCU) series were compared, and came to the conclusion that the MCU series based on ARM Cortex-M0+ architecture were suitable for the development of wearable medical devices. In aspects of power consumption, operational performance, integrated peripherals and cost, the MCU series based on Cortex-M0+ architecture of primary semiconductor companies were compared, aimed at providing the guides of MCU selection for wearable medical devices.

  5. Communication Architecture Synthesis for Multi-bus SoC

    Directory of Open Access Journals (Sweden)

    Abdelkrim Zitouni

    2006-01-01

    Full Text Available In the systems on chip (SoC design, the synthesis of communication architecture constitutes the bottleneck which can affect the performances of the system. Various schemes and protocols can be necessary, just as various topologies of interconnection. To reduce the complexity of the communications refinement, we present in this study a model and a synthesis approach for multi-bus communication architecture containing centralized bridge. The automation of the arbiter synthesis step profited from a detailed attention. This stage generates a hierarchical arbiter integrating various priority arbitration modules. The proposed approach was integrated in a toolbox based environment

  6. Hardware-Software Co-Simulation for SOC Functional Verification

    Institute of Scientific and Technical Information of China (English)

    YAN Ying-jian; LIU Ming-ye

    2005-01-01

    A hardware-software co-simulation method for system on chip (SOC) design is discussed. It is based on an instruction set simulator (ISS) and an event-driven hardware simulator, and a bus interface model that is described in C language provides the interface between the two. The bus interface model and the ISS are linked into a singleton program the software simulator, which communicate with the hardware simulator through Windows sockets. The implementation of the bus interface model and the synchronization between hardware and software simulator are discussed in detail. Co-simulation control of the hardware simulator is also discussed.

  7. Mach-Zehnder Interferometers with Asymmetric Modulation Arms in Applications of High Speed Silicon-on-Insulator Based Optical Switches

    Institute of Scientific and Technical Information of China (English)

    SUN Fei; YU Jin-Zhong

    2006-01-01

    @@ Modulation arms with different widths are introduced to Mach-Zehnder interferometers (MZIs) to obtain improved performance. Theoretical analysis and numerical simulation have shown that when the widths of the two arms are properly designed to achieve an inherent mπ/2 (m is an odd integer) optical phase difference between the arms, the asymmetric MZI presents higher modulation speed. Furthermore, the carrier-absorption induced divergence of insertion losses in silicon-on-insulator (SOI) based MZI optical switches can be obviously improved.

  8. 基于EMF等效模型电动车镍氢电池SOC估计%SOC Estimation Of NiMH Battery used in EV based on EMF Equivalent Circuit Model

    Institute of Scientific and Technical Information of China (English)

    朱春波; 武国良; 陈清泉

    2008-01-01

    讨论了电动汽车镍氢动力电池荷电状态(State of Charge,简称SOC)的估计方法.提出用电动势(EMF)等效电路模型法来估计电池的SOC.研究确定了EMF与SOC之间的关系,并通过电路分析,计算得出电池EMF与端电压之间的关系,最终建立了端电压与SOC关系.通过实测数据并利用模型估计数据的对比得出,SOC的误差在混合动力汽车的允许误差范围内.该方法在车辆停车和行驶时均适用.

  9. Analog circuit design for communication SOC

    CERN Document Server

    Tu, Steve Hung-Lung

    2012-01-01

    This e-book provides several state-of-the-art analog circuit design techniques. It presents both empirical and theoretical materials for system-on-a-chip (SOC) circuit design. Fundamental communication concepts are used to explain a variety of topics including data conversion (ADC, DAC, S-? oversampling data converters), clock data recovery, phase-locked loops for system timing synthesis, supply voltage regulation, power amplifier design, and mixer design. This is an excellent reference book for both circuit designers and researchers who are interested in the field of design of analog communic

  10. SOCS3: A novel therapeutic target for cardioprotection.

    Science.gov (United States)

    Yasukawa, Hideo; Nagata, Takanobu; Oba, Toyoharu; Imaizumi, Tsutomu

    2012-10-01

    The suppressors of cytokine signaling (SOCS) family of proteins are cytokine-inducible inhibitors of Janus kinase (JAK)-signal transducer and activator of the transcription (STAT) signaling pathways. Among the family, SOCS1 and SOCS3 potently suppress cytokine actions by inhibiting JAK kinase activities. The generation of mice lacking individual SOCS genes has been instrumental in defining the role of individual SOCS proteins in specific cytokine pathways in vivo; SOCS1 is an essential negative regulator of interferon-γ (IFNγ) and SOCS3 is an essential negative regulator of leukemia inhibitory factor (LIF). JAK-STAT3 activating cytokines have exhibited cardioprotective roles in the heart. The cardiac-specific deletion of SOCS3 enhances the activation of cardioprotective signaling pathways, inhibits myocardial apoptosis and fibrosis and results in the inhibition of left ventricular remodeling after myocardial infarction (MI). We propose that myocardial SOCS3 is a key determinant of left ventricular remodeling after MI, and SOCS3 may serve as a novel therapeutic target to prevent left ventricular remodeling after MI. In this review, we discuss the signaling pathways mediated by JAK-STAT and SOCS proteins and their roles in the development of myocardial injury under stress (e.g., pressure overload, viral infection and ischemia). PMID:24058778

  11. SOCS proteins in regulation of receptor tyrosine kinase signaling

    DEFF Research Database (Denmark)

    Kazi, Julhash U.; Kabir, Nuzhat N.; Flores Morales, Amilcar;

    2014-01-01

    signaling mediated by RTKs must be tightly regulated by interacting proteins including protein-tyrosine phosphatases and ubiquitin ligases. The suppressors of cytokine signaling (SOCS) family proteins are well-known negative regulators of cytokine receptors signaling consisting of eight structurally similar...... proteins, SOCS1-7, and cytokine-inducible SH2-containing protein (CIS). A key feature of this family of proteins is the presence of an SH2 domain and a SOCS box. Recent studies suggest that SOCS proteins also play a role in RTK signaling. Activation of RTK results in transcriptional activation of SOCS......-encoding genes. These proteins associate with RTKs through their SH2 domains and subsequently recruit the E3 ubiquitin machinery through the SOCS box, and thereby limit receptor stability by inducing ubiquitination. In a similar fashion, SOCS proteins negatively regulate mitogenic signaling by RTKs. It is also...

  12. CPU/SoC/MCU CoreSight SoC-400:可配置的调试和追踪解决方案

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    ARM公司针对复杂片上系统(SoC)设计推出高度可配置的调试和追踪解决方案ARM CoreSight SoC-400。随着多核产品的日益普及,ARM CoreSight SoC-400提供了系统解决方案,适合移动电话、平板电脑等应用。

  13. Cache Performance Optimization for SoC Vedio Applications

    Directory of Open Access Journals (Sweden)

    Lei Li

    2014-07-01

    Full Text Available Chip Multiprocessors (CMPs are adopted by industry to deal with the speed limit of the single-processor. But memory access has become the bottleneck of the performance, especially in multimedia applications. In this paper, a set of management policies is proposed to improve the cache performance for a SoC platform of video application. By analyzing the behavior of Vedio Engine, the memory-friendly writeback and efficient prefetch policies are adopted. The experiment platform is simulated by System C with ARM Cotex-A9 processor model. Experimental study shows that the performance can be improved by the proposed mechanism in contrast to the general cache without Last Level Cache (LLC: up to 18.87% Hit Rate increased, 10.62% MM Latency and 46.43% CPU Read Latency decreased for VENC/16way/64bytes; up to 52.1% Hit Rate increased, 11.43% MM Latency and 47.48% CPU Read Latency decreased for VDEC/16way/64bytes, but with only 8.62% and 4.23% Bandwidth increased respectively

  14. Small-Sized Variable Stiffness Actuator Module Based on Adjustable Moment Arm

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Hongseon; Song, Jaebok [Korea Univ., Seoul (Korea, Republic of)

    2013-10-15

    In recent years, variable stiffness actuation has attracted much attention because interaction between a robot and the environment is increasingly required for various robot tasks. Several variable stiffness actuators (VSO) have been developed; however, they find limited applications owing to their size and weight. For realizing their widespread use, we developed a compact and lightweight mini-VSO. The mini-VSO consists of a control module based on an adjustable moment arm mechanism and a drive module with two motors. By controlling the relative motion of cams in the control module, the position and stiffness can be simultaneously controlled. Experimental results are presented to show its ability to change stiffness.

  15. 基于ARM7的RFID读写器硬件系统设计%Design of RFID Read-Write Hardware System Based on ARM7

    Institute of Scientific and Technical Information of China (English)

    仲芳强; 张亚君

    2011-01-01

    介绍一种通用的基于ARM7的13.56MHZ RFID读写器硬件系统设计过程.该系统通过LPC2364(ARM7)对MFRC500射频识别芯片进行驱动和控制,利用DM161A芯片与PC机进行网络通信和传输实时数据.经实践证明该系统可以读写Mifare One等射频卡,在实际情况中底层的软件和硬件不需要修改,无需了解底层的细节,方便与上位机的连接与通信,有利于进行二次开发,具有一定的通用性.该方案具有广阔的应用前景.%Introduced a universal 13.56MHz RFID reader hardware system based on ARM7 designing procession.The system uses LPC2364(ARM7)to drive and control the MFRC500 RFID IC chip and the DM9161A IC chip to communicate with the PC by the network and transfer real time data. The result of experiment shows that the system can read-write the Mifare One RFID card, facilitates the connection between PC and communications. No need to modify the firmware and hardware and just change the PC software development is conducive to the second development and has a certain universal. This design scheme has wide application future.

  16. Design of microphone control system based on ARM11%基于ARM11的麦克风控制系统研究

    Institute of Scientific and Technical Information of China (English)

    荣少巍

    2011-01-01

    介绍了一种基于ARM11的麦克风控制系统的硬件、操作系统驱动部分的设计与实现.采用继电器对外部进行控制,并使用片上AD采集语音信号.系统的处理器运用了高性能低功耗S3C6410A ARM11芯片作为主处理器,操作系统采用Linux系统,使板上FLASH进行数据存储,外部采用有触摸屏进行输入,软件系统采用Nokia公司推出的Qt4.7作为开发平台进行开发,拥有良好的可视化界面.最后进行系统调试,拥有较好的性能.%This paper introduces to the software and hardware design of a microphone control system based on ARM11, include operating system part of the design and implementation. A relay for external control, acquisition voice signals use on-chip AD. The system uses a S3C6410A /ARM11 of high-performance and low power consumption processor as main processor. The operating system use Linux. The system use board on FLASH to data storage, External input use of a touch screen for input. The software use Nokia's Qt4. 7 as software develop platform. This platform has a good visual interface. Finally,system debug and it has better performance.

  17. Treating fibromyalgia with mindfulness-based stress reduction: results from a 3-armed randomized controlled trial.

    Science.gov (United States)

    Schmidt, Stefan; Grossman, Paul; Schwarzer, Barbara; Jena, Susanne; Naumann, Johannes; Walach, Harald

    2011-02-01

    Mindfulness-based stress reduction (MBSR) is a structured 8-week group program teaching mindfulness meditation and mindful yoga exercises. MBSR aims to help participants develop nonjudgmental awareness of moment-to-moment experience. Fibromyalgia is a clinical syndrome with chronic pain, fatigue, and insomnia as major symptoms. Efficacy of MBSR for enhanced well-being of fibromyalgia patients was investigated in a 3-armed trial, which was a follow-up to an earlier quasi-randomized investigation. A total of 177 female patients were randomized to one of the following: (1) MBSR, (2) an active control procedure controlling for nonspecific effects of MBSR, or (3) a wait list. The major outcome was health-related quality of life (HRQoL) 2 months post-treatment. Secondary outcomes were disorder-specific quality of life, depression, pain, anxiety, somatic complaints, and a proposed index of mindfulness. Of the patients, 82% completed the study. There were no significant differences between groups on primary outcome, but patients overall improved in HRQoL at short-term follow-up (P=0.004). Post hoc analyses showed that only MBSR manifested a significant pre-to-post-intervention improvement in HRQoL (P=0.02). Furthermore, multivariate analysis of secondary measures indicated modest benefits for MBSR patients. MBSR yielded significant pre-to-post-intervention improvements in 6 of 8 secondary outcome variables, the active control in 3, and the wait list in 2. In conclusion, primary outcome analyses did not support the efficacy of MBSR in fibromyalgia, although patients in the MBSR arm appeared to benefit most. Effect sizes were small compared to the earlier, quasi-randomized investigation. Several methodological aspects are discussed, e.g., patient burden, treatment preference and motivation, that may provide explanations for differences. In a 3-armed randomized controlled trial in female patients suffering from fibromyalgia, patients benefited modestly from a mindfulness-based

  18. DESIGN OF ARM BASED REAL TIME PERSONNEL MONITORING SYSTEM USING WI-FI TECHNOLOGY

    Directory of Open Access Journals (Sweden)

    Rekha George

    2013-01-01

    Full Text Available Nowadays we constantly come across the need to transfer remote data to monitor center which will be far away from the place of data acquisition. Traditional data acquisition system using wires cannot satisfy these requirements due to its heavy cost and impracticability. Embedded devices with network communication which makes it more powerful and easier to monitor and control remote data, is one of the major outcomes of the developments in the field of communication and networking technologies. This study presents the design of a real time personnel monitoring system based on wireless technology. ARM embedded processor and Wi-Fi module are used as hardware platform in this project. Data transfer over the wireless network is based on the TCP/IP protocol which is a part of the Wi-Fi module. Using this designed system an officer can monitor the personnel in the organization by opening a web page from a place that is geographically far. This system is based on the conversion of serial to wireless data which could be transferred over the wireless network to the server and also over the internet. At the completion of the design, the result shows that data is transferred between the ARM processor and the host system using the wireless network.

  19. Robustness of SOC Estimation Algorithms for EV Lithium-Ion Batteries against Modeling Errors and Measurement Noise

    Directory of Open Access Journals (Sweden)

    Xue Li

    2015-01-01

    Full Text Available State of charge (SOC is one of the most important parameters in battery management system (BMS. There are numerous algorithms for SOC estimation, mostly of model-based observer/filter types such as Kalman filters, closed-loop observers, and robust observers. Modeling errors and measurement noises have critical impact on accuracy of SOC estimation in these algorithms. This paper is a comparative study of robustness of SOC estimation algorithms against modeling errors and measurement noises. By using a typical battery platform for vehicle applications with sensor noise and battery aging characterization, three popular and representative SOC estimation methods (extended Kalman filter, PI-controlled observer, and H∞ observer are compared on such robustness. The simulation and experimental results demonstrate that deterioration of SOC estimation accuracy under modeling errors resulted from aging and larger measurement noise, which is quantitatively characterized. The findings of this paper provide useful information on the following aspects: (1 how SOC estimation accuracy depends on modeling reliability and voltage measurement accuracy; (2 pros and cons of typical SOC estimators in their robustness and reliability; (3 guidelines for requirements on battery system identification and sensor selections.

  20. Hardware-Software Co-implementation of H.264 Decoder in SoC

    Institute of Scientific and Technical Information of China (English)

    YANG Yu-hong; ZHANG Wen-jun; XIONG Lian-xue; RAO Zhen-ning

    2006-01-01

    With the increasing demand for flexible and efficient implementation of image and video processing algorithms, there should be a good tradeoff between hardware and software design method. This paper utilized the HW-SW codesign method to implement the H. 264 decoder in an SoC with an ARM core, a multimedia processor and a deblocking filter coprocessor. For the parallel processing features of the multimedia processor, clock cycles of decoding process can be dramatically reduced. And the hardware dedicated deblocking filter coprocessor can improve the efficiency a lot. With maximum clock frequency of 150 MHz, the whole system can achieve real time processing speed and flexibility.

  1. SOCS3 silencing attenuates eosinophil functions in asthma patients.

    Science.gov (United States)

    Zafra, Ma Paz; Cañas, Jose A; Mazzeo, Carla; Gámez, Cristina; Sanz, Veronica; Fernández-Nieto, Mar; Quirce, Santiago; Barranco, Pilar; Ruiz-Hornillos, Javier; Sastre, Joaquín; del Pozo, Victoria

    2015-01-01

    Eosinophils are one of the key inflammatory cells in asthma. Eosinophils can exert a wide variety of actions through expression and secretion of multiple molecules. Previously, we have demonstrated that eosinophils purified from peripheral blood from asthma patients express high levels of suppressor of cytokine signaling 3 (SOCS3). In this article, SOCS3 gene silencing in eosinophils from asthmatics has been carried out to achieve a better understanding of the suppressor function in eosinophils. SOCS3 siRNA treatment drastically reduced SOCS3 expression in eosinophils, leading to an inhibition of the regulatory transcription factors GATA-3 and FoxP3, also interleukin (IL)-10; in turn, an increased STAT3 phosphorilation was observed. Moreover, SOCS3 abrogation in eosinophils produced impaired migration, adhesion and degranulation. Therefore, SOCS3 might be regarded as an important regulator implicated in eosinophil mobilization from the bone marrow to the lungs during the asthmatic process. PMID:25764157

  2. SOCS3 Silencing Attenuates Eosinophil Functions in Asthma Patients

    Directory of Open Access Journals (Sweden)

    Mª Paz Zafra

    2015-03-01

    Full Text Available Eosinophils are one of the key inflammatory cells in asthma. Eosinophils can exert a wide variety of actions through expression and secretion of multiple molecules. Previously, we have demonstrated that eosinophils purified from peripheral blood from asthma patients express high levels of suppressor of cytokine signaling 3 (SOCS3. In this article, SOCS3 gene silencing in eosinophils from asthmatics has been carried out to achieve a better understanding of the suppressor function in eosinophils. SOCS3 siRNA treatment drastically reduced SOCS3 expression in eosinophils, leading to an inhibition of the regulatory transcription factors GATA-3 and FoxP3, also interleukin (IL-10; in turn, an increased STAT3 phosphorilation was observed. Moreover, SOCS3 abrogation in eosinophils produced impaired migration, adhesion and degranulation. Therefore, SOCS3 might be regarded as an important regulator implicated in eosinophil mobilization from the bone marrow to the lungs during the asthmatic process.

  3. [The organizational bases for the building of a modern medical support system for the Armed Forces].

    Science.gov (United States)

    Chizh, I M

    1996-01-01

    In the article the problems concerning characteristic features of the local wars and armed conflicts, organization bases of construction of The Army and Fleet medical support modern system are discussed. The organization of personnel medical security is considered depending on the duration, intensity and spatial scope of military conflict, peculiarities of group (forces) application and ways of military actions conduction. The distribution of federal troops sanitary losses during the war in Chechenskaya Republic is shown depending on the type, localization and degree of injuries gravity as well as volume of the wounded and invalids evacuation by air transport and work of military medical institutions. The following principles of construction of the Armed Forces medical support system are formulated: The system must be in compliance with troops goals, structure, strategy and tactics, its specificity; development of medical security forms and methods, their historicism; interdependency, completeness and integrity of the system's elements; territorial aspects of its construction and management optimization. Considering character of the goals being laid on the Mobile Forces the paramount importance is attached to the level of readiness of medical service and its formations and units to act in crisis situations. PMID:8659162

  4. Study on New Smart Transformer Terminal Unit Based on ARM and GPRS Network

    Directory of Open Access Journals (Sweden)

    Na Wu

    2013-12-01

    Full Text Available Distribution transformer is one of the most important power equipments in distribution network, whose running state exercises a great influence on the stability of the network. Transformer Terminal Unit (TTU is an effective device to monitor the running state of transformers in the distribution automation system. In this paper, we study a new smart TTU which uses ARM7 series chip as processor, equipped with ATT7022B based electric meter module and GPRS module for remote data transmission control. We focus on the corresponding hardware, software design and the measurement principle of harmonics of TTU. The new TTU can measure the electric parameters of the distribution transformer precisely. Taking advantage of the powerful ARM processor, it can analyze harmonic of the power line effectively. Due to the always-on-line feature of GPRS, TTU can achieve reliable communication with the remote terminal and the master station. Compared with other similar units, the new unit outperforms in terms of real-time, precision and reliability, which can fully meet with the high-speed development of distribution automation system.

  5. Design and Application of Embedded System Based on ARM7 LPC2104 Processor in Telemedicine.

    Science.gov (United States)

    Miao, Ya-Lin; Miao, Xiang-Lin; Bian, Zheng-Zhong; Zhang, Yong-Jie

    2005-01-01

    This paper, based on ARM7 processor and real-time embedded operating system (μC/OS-II), establishes an embedded telemedicine platform ground on LPC2104 and realizes some very popular embedded application technologies such as USB communication, embedded Internet communication, infrared communication, etc. Meanwhile the volume of the hardware is smaller; power consumption is lower; the functions are mightier and the expansibility is stronger. In addition, for the embedded real-time μC/OS-II in use has gone through the reliability authentication, the whole running system is more stable and the program maintenance and update is more convenient. The telemedicine system based on this technology has been tested to be stable and efficient, and has obtained the results as expected.

  6. Design of High Precision Frequency Meter Based on ARM7%基于ARM7的高精度频率计的设计

    Institute of Scientific and Technical Information of China (English)

    薛巨峰; 关子钧; 刘彬

    2015-01-01

    In this paper, based on the analysis of the phase coincidence detection technology, a design method of a high precision frequency meter which is based on this theory and uses ARM7 as the main control chip is proposed. The design method can effectively eliminate the counting error of ±1 words by capturing the coincidence point between phases, On this basis, because the ARM7 has a 32 bit processor core and pipeline technology, the measurement speed and accuracy of the frequency meter is much higher than that of the traditional ones using 16 bit single-chip design. The maximum measurement frequency of the frequency meter is 10MHz. At the same time, this design uses the OCXO 10811A produced by Agilent as the standard frequency and the measurement accuracy can reach 10-10 order of magnitude. In order to reduce the cost, the design chooses the counters built in ARM7 chip and uses a simple logic circuit to design. Its measurement precision is superior over multiple cycle synchronous measurement and its cost is much lower than those of the analog interpolation method and the cursor method, so this frequency meter has a very broad market prospect.%文章通过对相位重合检测技术的分析,提出了基于此理论并用ARM7作为主控芯片的高精度频率计的设计方法。该设计方法通过捕捉相位之间的重合点,能够有效消除±1个字的计数误差。在此基础上由于ARM7具有32位的处理器内核以及流水线技术,使得频率计的测量速度和精度比传统的使用16位单片机设计的频率计要高很多。本频率计最大测量频率为10MHz。同时本设计采用安捷伦公司生产的恒温晶振10811A作为标准频率,能够有效保证测量精度能够达到10-10量级。为了降低成本,在设计中选用采用ARM7芯片内部的计数器以及用简单的逻辑电路进行设计。由于其测量精度要超过多周期同步测量法,而成本又比模拟内插法和游标法低很多,因此

  7. SOCS3 and SOCS5 mRNA expressions may predict initial steroid response in nephrotic syndrome children

    Directory of Open Access Journals (Sweden)

    Witold Szaflarski

    2012-01-01

    Full Text Available Suppressors of Cytokine Signaling (SOCS inhibit Signal Transducers and Activators of Transcription (STATs phosphorylation by binding and inhibiting Janus Kinases (JaKs. The aim of the present study was to evaluate the influence of glucocorticosteroids on the JaK/STAT signaling pathway in the leukocytes of nephrotic syndrome (NS patients. The study group was composed of 34 steroid sensitive NS (SSNS children and 20 steroid resistant NS (SRNS subjects. Gene expression was assessed by real-time PCR using pre-designed human JaK/STAT PCR array. Protein expression was evaluated using ELISA assay (plasma concentration and immunofluorescence (in situ protein expression. In SSNS children, the initial increased expression of JaK1, JaK2, JaK3, STAT1, STAT2, STAT6, TYK2, SOCS1, SOCS2, SOCS3, SOCS4 and SOCS5 was reduced back to the control limits. Similarly, in SRNS patients the increased levels of almost all mRNA expressions for the abovementioned genes were decreased, with the exceptions of SOCS3 and SOCS5 expressions. These mRNA expressions were still significantly increased and correlated with early unfavorable course of nephrotic syndrome in children. Plasma levels of SOCS3, SOCS5, IL-6 and IL-20 were significantly increased in SRNS subjects after six weeks of steroids medication compared to SSNS and control participants. We conclude that SOCS3 and SOCS5 increased mRNA expressions might predict initial resistance to steroids in NS patients. (Folia Histochemica et Cytobiologica 2011; Vol. 49, No. 4, pp. 719–728

  8. Aging and work: how do SOC strategies contribute to job performance across adulthood?

    Science.gov (United States)

    Yeung, Dannii Y; Fung, Helene H

    2009-12-01

    The authors examined the impacts of selection, optimization, and compensation (SOC) strategies-elective selection, loss-based selection, optimization, and compensation-on job performance across adulthood. A cross-sectional survey (Study 1, N=355) and a 5-day experience sampling study (Study 2, N=87) were conducted to assess Chinese insurance sales workers' global and momentary employment of SOC strategies at work and compare the effectiveness of these strategies in predicting their job performance. Study 1 revealed that the use of compensation predicted higher performance maintenance among older workers, whereas the use of elective selection contributed positively to sales productivity for both age groups, with stronger association for younger workers. Study 2 demonstrated that the positive impact of SOC strategies on global and momentary measures of job performance differed across tasks with various difficulty levels. When the task was perceived as highly difficult, older workers' greater use of elective selection predicted higher self-rated task performance; however, the positive association was weaker among younger workers. Older workers' greater use of the 4 SOC strategies was positively associated with sales increases when the task was not difficult or moderately difficult, yet the relationship was negative when the task was highly difficult. A reverse pattern was observed among younger workers. This article contributes to the understanding of working adults' psychological adaptation to the process of aging and reveals the moderating role of task difficulty on the association between SOC strategies and performance outcomes. PMID:20025407

  9. Concise Arm and Hand Rehabilitation Approach in Stroke (CARAS: A practical and evidence-based framework for clinical rehabilitation management

    Directory of Open Access Journals (Sweden)

    Johan A. Franck

    2015-10-01

    Full Text Available The volume of information on new treatment techniques supporting the restoration of arm-hand function (AHF and arm-hand skill performance (ASHP in stroke survivors overwhelms therapists in everyday clinical practice when choosing the appropriate therapy. The Concise Arm and Hand Rehabilitation Approach in Stroke (CARAS is designed for paramedical staff to structure and implement training of AHF and AHSP in stroke survivors. The CARAS is based on four constructs: (a stratification according to the severity of arm–hand impairment (using the Utrecht Arm/Hand -Test [UAT], (b the individual’s rehabilitation goals and concomitant potential rehabilitation outcomes, (c principles of self-efficacy, and (d possibilities to systematically incorporate (new technology and new evidence-based training elements swiftly. The framework encompasses three programs aimed at treating either the severely (UAT 0-1, moderately (UAT 2-3, or mildly (UAT 4-7 impaired arm-hand. Program themes are: taking care of the limb and prevention of complications (Program 1, task-oriented gross motor grip performance (Program 2, and functional AHSP training (Program 3. Each program is preceded and followed by an assessment. Training modularity facilitates rapid interchange/adaptation of sub-elements. Proof-of-principle in clinical rehabilitation has been established. The CARAS facilitates rapid structured design and provision of state-of-the-art AHF and ASHP treatment in stroke patients.

  10. Discrete wavelet transform-based fault diagnosis for driving system of pipeline detection robot arm

    Institute of Scientific and Technical Information of China (English)

    Deng Huiyu; Wang Xinli; Ma Peisun

    2005-01-01

    A real-time wavelet multi-resolution analysis (MRA)-based fault detection algorithm is proposed. The first stage detailed MRA signals extracted from the original signals were used as the criteria for fault detection. By measuring sharp variations in the detailed MRA signals, faults in the motor driving system of pipeline detection robot arm could be detected. The fault type was then identified by comparison of the three-phase MRA sharp variations. The effects of the faults were examined. The simulation results show that this algorithm is effective and robust, it is promising for fault detection in a robot's joint driving system. The method is simple, rapid and it can operate in real time.

  11. 基于ARM9的野外探测设备设计%Design of Outdoors Exploring Device based on ARM9

    Institute of Scientific and Technical Information of China (English)

    赵元苏

    2011-01-01

    为了让机器可以代替人类在危险地带工作,介绍了一种基于ARM9芯片(S3C2440),使用传感器、USB摄像头、无线网卡等外设,搭建出可被遥控的、能将采集到的视频数据通过无线网络传回的移动平台。嵌入式操作系统采用Linux,应用程序编程语言使用C语言。%To make machine working in dangerous area instead of human being, this papers based on ARM9 embedded chip assembled with peripheral equipment, such as sensor, USB camera, wireless adapter, and so on, builds a removable platform that could be remote and transmit video flow back to control center through the wireless Internet. The embedded operating system is Linux, and C language is used to program.

  12. Design of multi-ports mobile monitoring system based on ARM-Linux%基于ARM-Linux的多端口移动监测系统设计

    Institute of Scientific and Technical Information of China (English)

    李昶; 翟开元

    2011-01-01

    Multi - ports mobile monitoring system based on ARM-Linux is designed, composing of the hardware and software. The hardware adopts embedded microprocessor PXA270 as the core, the software realizes transport of the monitoring data and video streaming through TCP and Modbus protocol, Socket network programming. The system has better operational efficiency than the traditional monitoring system,realizing multi - stations and mobile monitoring.%设计了基于ARM-Linux的多端口监测和移动视频监控系统.系统由硬件和软件两部分组成,硬件采用嵌入式微控制器PXA270为核心,软件采用,TCP和Modbus协议以及Socket网络编程实现监测数据和视频流的传输.该系统比传统的数据监测系统具有更高的运行效率,可实现多工位、移动式监控.

  13. A perspective matrix-based seed reconstruction algorithm with applications to C-arm based intra-operative dosimetry

    Science.gov (United States)

    Narayanan, Sreeram; Cho, Paul S.

    2006-03-01

    Currently available seed reconstruction algorithms are based on the assumption that accurate information about the imaging geometry is known. The assumption is valid for isocentric x-ray units such as radiotherapy simulators. However, the large majority of the clinics performing prostate brachytherapy today use C-arms for which imaging parameters such as source to axis distance, image acquisition angles, central axis of the image are not accurately known. We propose a seed reconstruction algorithm that requires no such knowledge of geometry. The new algorithm makes use of perspective projection matrix, which can be easily derived from a set of known reference points. The perspective matrix calculates the transformation of a point in 3D space to the imaging coordinate system. An accurate representation of the imaging geometry can be derived from the generalized projection matrix (GPM) with eleven degrees of freedom. In this paper we show how GPM can be derived given a theoretical minimum number of reference points. We propose an algorithm to compute the line equation that defines the backprojection operation given the GPM. The algorithm can be extended to any ray-tracing based seed reconstruction algorithms. Reconstruction using the GPM does not require calibration of C-arms and the images can be acquired at arbitrary angles. The reconstruction is performed in near real-time. Our simulations show that reconstruction using GPM is robust and accuracy is independent of the source to detector distance and location of the reference points used to generate the GPM. Seed reconstruction from C-arm images acquired at unknown geometry provides a useful tool for intra-operative dosimetry in prostate brachytherapy.

  14. Expression of SOCS-3 and Its Methylation in Renal Cancer

    Institute of Scientific and Technical Information of China (English)

    YU Jing; ZHAO Li-chun; YAO Song-mei; HE Cheng-yan; LI Hong-jun; KONG Xiang-bo

    2011-01-01

    The expression level of suppressor of cytokine signaling-3(SOCS-3) in human renal carcinoma and its methylation state were investigated. Reverse transcription-polymerase chain reaction(RT-PCR), immuocytochemistry,immunohistochemistry and Western blot were used to detect the expression level of SOCS-3, and the methylation of SOCS gene was investigated by methylation specific PCR in the tissues of i 5 cases of renal carcinoma. Compared to those of the normal renal cell line and specimens, the expression level of SOCS-3 in renal carcinoma was significantly lower or can't be detected(P<0.01). And the methylation of SOCS-3 gene in the tissue of renal carcinoma was significantly higher. The expression of SOCS-3 gene is significantly lower in renal carcinoma and the high methylation of the promoter island of SOCS-3 gene is associated with the lower expression of SOCS-3 gene. It may be one of main mechanisms for the development and progress of renal carcinoma.

  15. FXR induces SOCS3 and suppresses hepatocellular carcinoma.

    Science.gov (United States)

    Guo, Fei; Xu, Zhizhen; Zhang, Yan; Jiang, Peng; Huang, Gang; Chen, Shan; Lyu, Xilin; Zheng, Ping; Zhao, Xin; Zeng, Yijun; Wang, Shuguang; He, Fengtian

    2015-10-27

    Suppressor of cytokine signaling 3 (SOCS3) is regarded as a vital repressor in the liver carcinogenesis mainly by inhibiting signal transducer and activator of transcription 3 (STAT3) activity. Farnesoid X Receptor (FXR), highly expressed in liver, has an important role in protecting against hepatocellular carcinoma (HCC). However, it is unclear whether the tumor suppressive activity of FXR involves the regulation of SOCS3. In the present study, we found that activation of FXR by its specific agonist GW4064 in HCC cells inhibited cell growth, induced cell cycle arrest at G1 phase, elevated p21 expression and repressed STAT3 activity. The above anti-tumor effects of FXR were dramatically alleviated by knockdown of SOCS3 with siRNA. Reporter assay revealed that FXR activation enhanced the transcriptional activity of SOCS3 promoter. Electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) assay displayed that FXR directly bound to IR9 DNA motif within SOCS3 promoter region. The in vivo study in nude mice showed that treatment with FXR ligand GW4064 could decelerate the growth of HCC xenografts, up-regulate SOCS3 and p21 expression and inhibit STAT3 phosphorylation in the xenografts. These results suggest that induction of SOCS3 may be a novel mechanism by which FXR exerts its anti-HCC effects, and the FXR-SOCS3 signaling may serve as a new potential target for the prevention/treatment of HCC. PMID:26416445

  16. Role of Ubiquitylation in Controlling Suppressor of Cytokine Signalling 3 (SOCS3 Function and Expression

    Directory of Open Access Journals (Sweden)

    Jamie J. L. Williams

    2014-05-01

    Full Text Available The realisation that unregulated activation of the Janus kinase–signal transducer and activator of transcription (JAK–STAT pathway is a key driver of a wide range of diseases has identified its components as targets for therapeutic intervention by small molecule inhibitors and biologicals. In this review, we discuss JAK-STAT signalling pathway inhibition by the inducible inhibitor “suppressor of cytokine signaling 3 (SOCS3, its role in diseases such as myeloproliferative disorders, and its function as part of a multi-subunit E3 ubiquitin ligase complex. In addition, we highlight potential applications of these insights into SOCS3-based therapeutic strategies for management of conditions such as vascular re-stenosis associated with acute vascular injury, where there is strong evidence that multiple processes involved in disease progression could be attenuated by localized potentiation of SOCS3 expression levels.

  17. SOCS2 Balances Metabolic and Restorative Requirements during Liver Regeneration.

    Science.gov (United States)

    Masuzaki, Ryota; Zhao, Sophia; Valerius, M Todd; Tsugawa, Daisuke; Oya, Yuki; Ray, Kevin C; Karp, Seth J

    2016-02-12

    After significant injury, the liver must maintain homeostasis during the regenerative process. We hypothesized the existence of mechanisms to limit hepatocyte proliferation after injury to maintain metabolic and synthetic function. A screen for candidates revealed suppressor of cytokine signaling 2 (SOCS2), an inhibitor of growth hormone (GH) signaling, was strongly induced after partial hepatectomy. Using genetic deletion and administration of various factors we investigated the role of SOCS2 during liver regeneration. SOCS2 preserves liver function by restraining the first round of hepatocyte proliferation after partial hepatectomy by preventing increases in growth hormone receptor (GHR) via ubiquitination, suppressing GH pathway activity. At later times, SOCS2 enhances hepatocyte proliferation by modulating a decrease in serum insulin-like growth factor 1 (IGF-1) that allows GH release from the pituitary. SOCS2, therefore, plays a dual role in modulating the rate of hepatocyte proliferation. In particular, this is the first demonstration of an endogenous mechanism to limit hepatocyte proliferation after injury.

  18. Settling-velocity specific SOC distribution on hillslopes

    DEFF Research Database (Denmark)

    Hu, Yaxian; Berhe, Asmeret Asefaw; Fogel, Marilyn L.;

    The net effect of soil erosion by water, as a sink or source of atmospheric CO2, is determined by the spatial (re-)distribution and stability of eroded soil organic carbon (SOC). The depositional position of eroded SOC is a function of the transport distances of soil fractions where the SOC...... is stored. In theory, the transport distances of soil fractions are related to their settling velocities under given flow conditions. Yet, very few field investigations have been conducted to examine the actual movement of eroded soil fractions along hillslopes, let alone the re-distribution pattern of SOC...... shows a coarsening effect immediately below the eroding slope, followed by a fining trend at the slope tail. The 13C values of soil fractions were more positive at the footslope than on the slope shoulder or at the slope tail, suggesting enhanced decomposition rate of fresh SOC input at the footslope...

  19. SOCS1 in cancer: An oncogene and a tumor suppressor.

    Science.gov (United States)

    Beaurivage, Claudia; Champagne, Audrey; Tobelaim, William S; Pomerleau, Véronique; Menendez, Alfredo; Saucier, Caroline

    2016-06-01

    The Suppressor Of Cytokine Signaling 1 (SOCS1) has been extensively investigated in immune cells where it works as a potent inhibitor of inflammation by negative feedback regulation of the cytokine-activated JAK-STAT signaling pathways. SOCS1 is also recognized as a tumor suppressor in numerous cancers and its critical functional relevance in non-immune cells, including epithelial cells, has just begun to emerge. Most notably, conflicting results from clinical and experimental studies suggest that SOCS1 may function as either a tumor suppressor or a tumor promoter, in a cell context-dependent manner. Here, we present an overview of the mechanisms underlying SOCS1 function as a tumor suppressor and discuss the emerging evidences of SOCS1 activity as an oncogene. PMID:26811119

  20. Different temporal bases for body and arm movements in volleyball serve reception

    NARCIS (Netherlands)

    Benerink, N. H.; Bootsma, R. J.; Zaal, F. T. J. M.

    2015-01-01

    In many sports, successfully intercepting a ball requires players to move both their body and their arms. Yet, studies of interception typically focus on one or the other. We performed an analysis of the moments of first foot and arm movements of elite-level volleyball players during serve reception

  1. Human-Like Behavior Generation Based on Head-Arms Model for Robot Tracking External Targets and Body Parts.

    Science.gov (United States)

    Zhang, Zhijun; Beck, Aryel; Magnenat-Thalmann, Nadia

    2015-08-01

    Facing and pointing toward moving targets is a usual and natural behavior in daily life. Social robots should be able to display such coordinated behaviors in order to interact naturally with people. For instance, a robot should be able to point and look at specific objects. This is why, a scheme to generate coordinated head-arm motion for a humanoid robot with two degrees-of-freedom for the head and seven for each arm is proposed in this paper. Specifically, a virtual plane approach is employed to generate the analytical solution of the head motion. A quadratic program (QP)-based method is exploited to formulate the coordinated dual-arm motion. To obtain the optimal solution, a simplified recurrent neural network is used to solve the QP problem. The effectiveness of the proposed scheme is demonstrated using both computer simulation and physical experiments.

  2. Kinematics and control of redundant robotic arm based on dielectric elastomer actuators

    Science.gov (United States)

    Branz, Francesco; Antonello, Andrea; Carron, Andrea; Carli, Ruggero; Francesconi, Alessandro

    2015-04-01

    Soft robotics is a promising field and its application to space mechanisms could represent a breakthrough in space technologies by enabling new operative scenarios (e.g. soft manipulators, capture systems). Dielectric Elastomers Actuators have been under deep study for a number of years and have shown several advantages that could be of key importance for space applications. Among such advantages the most notable are high conversion efficiency, distributed actuation, self-sensing capability, multi-degree-of-freedom design, light weight and low cost. The big potentialities of double cone actuators have been proven in terms of good performances (i.e. stroke and force/torque), ease of manufacturing and durability. In this work the kinematic, dynamic and control design of a two-joint redundant robotic arm is presented. Two double cone actuators are assembled in series to form a two-link design. Each joint has two degrees of freedom (one rotational and one translational) for a total of four. The arm is designed to move in a 2-D environment (i.e. the horizontal plane) with 4 DoF, consequently having two degrees of redundancy. The redundancy is exploited in order to minimize the joint loads. The kinematic design with redundant Jacobian inversion is presented. The selected control algorithm is described along with the results of a number of dynamic simulations that have been executed for performance verification. Finally, an experimental setup is presented based on a flexible structure that counteracts gravity during testing in order to better emulate future zero-gravity applications.

  3. Network-based study on the relationship between arms exports and foreign policies

    Science.gov (United States)

    Chen, Xing; Zhao, Ru-lan; Zhang, Zi-ke; Zhao, Jing

    2016-02-01

    According to the data of arms exports of the top 20 largest arms exports countries in 1993-2012, an arms exports network is constructed to study the relationship of the exporters. Then the topological properties of the network and its minimal spanning tree are calculated to weigh the influence and importance of a country in all exporters, and the time evolution of the properties. It turns out that the properties fluctuate with the time. Consequently, the correlations of the arms exporters are discussed with the recipients during and after the wars. Besides, a time delayed network is constructed. The correlations of the exporters with time lag are discussed by filtering the time delayed network in different ways. The interactions between the exporters are visualized after filtering. This study may shed new light on how arms exports reflect foreign policies.

  4. Are soils of Iowa USA currently a carbon sink or source? Simulated changes in SOC stock from 1972 to 2007

    Science.gov (United States)

    Liu, S.; Tan, Z.; Li, Z.; Zhao, S.; Yuan, W.

    2011-01-01

    Upscaling the spatial and temporal changes in carbon (C) stocks and fluxes from sites to regions is a critical and challenging step toward improving our understanding of the dynamics of C sources and sinks over large areas. This study simulated soil organic C (SOC) dynamics within 0-100cm depth of soils across the state of Iowa in the USA from 1972 to 2007 using the General Ensemble biogeochemical Modeling System (GEMS). The model outputs with variation coefficient were analyzed and assembled from simulation unit to the state scale based upon major land use types at annual step. Results from this study indicate that soils (within a depth of 0-100cm) in Iowa had been a SOC source at a rate of 190??380kg Cha-1yr-1. This was likely caused by the installation of a massive drainage system which led to the release of SOC from deep soil layers previously protected under poor drainage conditions. The annual crop rotation was another major force driving SOC variation and resulted in spatial variability of annual budgets in all croplands. Annual rate of change of SOC stocks in all land types depended significantly on the baseline SOC levels; soils with higher SOC levels tended to be C sources, and those with lower levels tended to be C sinks. Management practices (e.g., conservation tillage and residue management practices) slowed down the C emissions from Iowa soils, but could not reverse the general trend of net SOC loss in view of the entire state due mainly to a high level of baseline SOC stocks. ?? 2010 Elsevier B.V.

  5. Design of Air Conditioner Central Control System Based on ARM-Linux-Qt%基于ARM-Linux-Qt的空调集中控制系统设计

    Institute of Scientific and Technical Information of China (English)

    杨都; 赖东锋; 肖焕明; 叶铁英

    2015-01-01

    In this paper, a central control system based on embedded technology, communication technology and HMI (Human and Machine Interactive) technology designed is introduced. The system selects TI AM335x hardware plat-form which based on ARM Cortex A8 processor, and Linux operation system as the software platform. The HMI in-terface is designed using Qt technology, and the communication is designed using CAN bus technology. The functions of the system include Multi-VRF centralized control, real time inspect, and schedule management. In addition, a high definition LCD and capacitive touch screen is provided to make system interactive conveniently and efficiently.%基于嵌入式技术、通信技术和人机交互技术设计了空调集中控制系统。该系统基于ARM Cortex A8的高速处理器TI AM335X硬件平台,采用嵌入式Linux操作系统,利用Qt设计了人机交互界面,通过CAN总线通讯技术,实现了多联机空调集中控制、实时监控、日程管理等功能。该系统采用7寸高分辨率彩色液晶屏和电容式触摸,较好的解决了以往空调集中控制器人机交互便捷性差、效率低下的问题。

  6. Stereocomplexation in Copolymer Networks Incorporating Enantiomeric Glycerol-Based 3-Armed Lactide Oligomers and a 2-Armed ɛ-Caprolactone Oligomer

    Directory of Open Access Journals (Sweden)

    Ayaka Shibita

    2016-07-01

    Full Text Available The reactions of enantiomeric glycerol-based 3-armed lactide oligomers (H3DLAO and H3LLAO and a diethylene glycol-based 2-armed ɛ-caprolactone oligomer (H2CLO with hexamethylene diisocyanate (HDI produced polyesterurethane copolymer networks (PEU-3scLAO/2CLOs 100/0, 75/25, 50/50, 25/75 and 0/100 with different feed ratios of stereocomplex (sc lactide oligomer (H3scLAO = H3DLAO + H3LLAO, H3DLAO/H3LLAO = 1/1 and H2CLO. Thermal and mechanical properties of the copolymer networks were compared with those of a simple homochiral (hc network (PEU-3DLAO produced by the reaction of H3DLAO and HDI. X-ray diffraction and differential scanning calorimetric analyses revealed that sc crystallites are formed without any hc crystallization for PEU-3scLAO/2CLOs, and that PEU-3DLAO is amorphous. The melting temperatures of sc crystallites for PEU-3scLAO/2CLOs were much higher than that of hc crystallites of H3DLAO. The polarized optical microscopic analysis revealed that the nucleation efficiency is enhanced with increasing feed of H3scLAO fraction, whereas the spherulite growth rate is accelerated with increasing feed H2CLO fraction over 100/0-50/50 networks. PEU-3scLAO/2CLO 100/0 (i.e., PEU-3scLAO exhibited a higher tensile strength and modulus than PEU-3DLAO. The elongation at break and tensile toughness for PEU-3scLAO/2CLOs increased with an increasing feed amount of H2CLO.

  7. Design & Implementation of a Low Cost Based Wireless HCI System for Disabled Persons Using ARM7

    Directory of Open Access Journals (Sweden)

    Surya Narayan Pradhan

    2014-05-01

    Full Text Available This paper focuses on design & development of a portable wireless Human Computer Interface (HCI system to create a robust hands free interface for disabled peoples or peoples having upper limb motor paralysis. Early techniques mainly considered image processing, gaze tracking and cameras to synthesis the device. We propose a new mouse as an input device for a computer whose operation is based on measurement of rotations of the user‘s head and detection of eye blinks. A tilt sensor(3-axis accelerometer is used to detect both lateral and vertical head movements to navigate the mouse cursor position placed on a helmet .The IR based eye blink sensor is placed on a spec used to detect eye blink and in turns do clicking operation. The signals are sent to the micro-controller (ARM7 LPC2148 for processing & do required operations. The wireless technology includes Zigbee module used to sends signals to the computer in use. A C# based program is developed for the mouse control operations & provides a flexible method for the disabled people to improve both personal & professional life quality.

  8. Functional cross-modulation between SOCS proteins can stimulate cytokine signaling.

    Science.gov (United States)

    Piessevaux, Julie; Lavens, Delphine; Montoye, Tony; Wauman, Joris; Catteeuw, Dominiek; Vandekerckhove, Joël; Belsham, Denise; Peelman, Frank; Tavernier, Jan

    2006-11-01

    SOCS (suppressors of cytokine signaling) proteins are negative regulators of cytokine signaling that function primarily at the receptor level. Remarkably, in vitro and in vivo observations revealed both inhibitory and stimulatory effects of SOCS2 on growth hormone signaling, suggesting an additional regulatory level. In this study, we examined the possibility of direct cross-modulation between SOCS proteins and found that SOCS2 could interfere with the inhibitory actions of other SOCS proteins in growth hormone, interferon, and leptin signaling. This SOCS2 effect was SOCS box-dependent, required recruitment of the elongin BC complex, and coincided with degradation of target SOCS proteins. Detailed mammalian protein-protein interaction trap (MAPPIT) analysis indicated that SOCS2 can interact with all members of the SOCS family. SOCS2 may thus function as a molecular bridge between a ubiquitin-protein isopeptide ligase complex and SOCS proteins, targeting them for proteasomal turnover. We furthermore extended these observations to SOCS6 and SOCS7. Our findings point to a unique regulatory role for SOCS2, SOCS6, and SOCS7 within the SOCS family and provide an explanation for the unexpected phenotypes observed in SOCS2 and SOCS6 transgenic mice. PMID:16956890

  9. Self-reported and performance-based outcomes using DEKA Arm

    Directory of Open Access Journals (Sweden)

    Linda Resnik, PT, PhD

    2014-06-01

    Full Text Available Mechanical properties of the DEKA Arm and associated engineering innovations are easy to observe. What is less clear is how these advances translate into functional benefits for the user with amputation. Study aims were to (1 quantify outcomes including dexterity, performance of daily activities, and prosthetic skill and spontaneity of users of the DEKA Arm and (2 compare outcomes when using the DEKA Arm with scores using the existing prosthesis. This was a quasi-experimental study. Descriptive analyses examined outcomes by DEKA Arm configuration level. Of the 39 subjects fit with a DEKA Arm, 32 were trained in use and completed end-of-study testing. Data from 26 prosthetic users were used to compare outcomes using existing prostheses with outcomes with the DEKA Arm. Dexterity and activity performance with the DEKA Arm varied by amputation level (p < 0.01. Self-reported function and number of activities performed using the prosthesis were similar across levels. Comparisons with existing prostheses showed the effect on dexterity varied by level. Activity performance and spontaneity of prosthetic use improved for users of the shoulder configuration level, while use of the prosthesis to perform activities and perceived difficulty performing self-selected tasks improved for all levels.

  10. Sequence and expression variation in SUPPRESSOR of OVEREXPRESSION of CONSTANS 1 (SOC1): homeolog evolution in Indian Brassicas.

    Science.gov (United States)

    Sri, Tanu; Mayee, Pratiksha; Singh, Anandita

    2015-09-01

    Whole genome sequence analyses allow unravelling such evolutionary consequences of meso-triplication event in Brassicaceae (∼14-20 million years ago (MYA)) as differential gene fractionation and diversification in homeologous sub-genomes. This study presents a simple gene-centric approach involving microsynteny and natural genetic variation analysis for understanding SUPPRESSOR of OVEREXPRESSION of CONSTANS 1 (SOC1) homeolog evolution in Brassica. Analysis of microsynteny in Brassica rapa homeologous regions containing SOC1 revealed differential gene fractionation correlating to reported fractionation status of sub-genomes of origin, viz. least fractionated (LF), moderately fractionated 1 (MF1) and most fractionated (MF2), respectively. Screening 18 cultivars of 6 Brassica species led to the identification of 8 genomic and 27 transcript variants of SOC1, including splice-forms. Co-occurrence of both interrupted and intronless SOC1 genes was detected in few Brassica species. In silico analysis characterised Brassica SOC1 as MADS intervening, K-box, C-terminal (MIKC(C)) transcription factor, with highly conserved MADS and I domains relative to K-box and C-terminal domain. Phylogenetic analyses and multiple sequence alignments depicting shared pattern of silent/non-silent mutations assigned Brassica SOC1 homologs into groups based on shared diploid base genome. In addition, a sub-genome structure in uncharacterised Brassica genomes was inferred. Expression analysis of putative MF2 and LF (Brassica diploid base genome A (AA)) sub-genome-specific SOC1 homeologs of Brassica juncea revealed near identical expression pattern. However, MF2-specific homeolog exhibited significantly higher expression implying regulatory diversification. In conclusion, evidence for polyploidy-induced sequence and regulatory evolution in Brassica SOC1 is being presented wherein differential homeolog expression is implied in functional diversification. PMID:26276216

  11. DESIGNING COMPILATION SYSTEM OF PLC SOURCE PROGRAM BASED ON ARM-FPGA%基于 ARM-FPGA的 PLC源程序编译系统的设计

    Institute of Scientific and Technical Information of China (English)

    蒋玉新; 蔡启仲; 李克俭; 张炜

    2013-01-01

    在研究PLC程序编译执行过程和新指令特点的基础上,基于ARM-FPGA的PLC主机结构,提出一种新型PLC指令的编译方法。静态编译将指令的操作数转换为PLC软元件的直接地址,建立转移类指令的转移地址链表,编译成为新的PLC程序代码序列;动态编译在PLC程序执行过程中将新程序指令中操作数的直接地址转换为立即数,由FPGA模块执行。通过对PLC用户源程序的编译与执行,表明该方法能够充分应用FPGA高速并行处理的功能,提高了PLC程序执行的速度。%Based on the study of compilation and execution process of PLC program and the features of new instructions , we propose a novel compilation method of PLC program on a PLC platform designed by ARM-FPGA.The static compilation converts the instruction operands to direct address of PLC soft components , sets up the branch address link list of branch instructions , and the new PLC program code sequence is complied;the dynamic compilation converts the direct address of operands in new program instructions to immediate data during the execution process of PLC program and this is done by FPGA module .By compiling and executing PLC user source program , it is demonstrated that our proposed method can speed up the processing of PLC program by fully utilising the high speed parallel processing functions of FPGA.

  12. 基于ARM-Linux的滑动轴承实验系统设计%Design of Sliding Bearing Experiment System Based on ARM-Linux

    Institute of Scientific and Technical Information of China (English)

    王福刚; 曾兵; 葛良全

    2009-01-01

    Taking ARM chip as the core, developed a sliding bearing experiment system based on embedded system, for enhancing real -time performance and scientific research performance of it. replanting embedded Linux OS (Operating System) in ARM chip. The systemcomposed of core board and expansion board runs with embedded Linux Operating System and friendly GUI (Graphical User Interfaces). Its parameter can be changed dynamically and its re-development performance is fine. Uses a modular and standardized design method, and also introduces the replanting of embedded Linux OS and the development of driver and Qt/Embedded application procedures. And, the demo system has been finished with a good debugging result.%为提高滑动轴承实验系统的实时性及改善其科研性能,以ARM芯片为核心,研制了一种基于嵌入式系统的滑动轴承实验系统;系统由核心板和扩展板两部分组成,移植了嵌入式Linux操作系统,开发了友好的人机界面,可动态改变参数,二次开发性能优良;采用了模块化、标准化的硬件设计方法,介绍了嵌入式Linux的移植过程,详述了驱动程序的开发以及基于Qt/Embedded的应用程序设计;系统样机已完成,运行稳定,调试效果良好.

  13. Ruler Based Automatic C-Arm Image Stitching Without Overlapping Constraint.

    Science.gov (United States)

    Chen, Cheng; Kojcev, Risto; Haschtmann, Daniel; Fekete, Tamas; Nolte, Lutz; Zheng, Guoyan

    2015-08-01

    In this paper, we propose a new method for stitching multiple fluoroscopic images taken by a C-arm instrument. We employ an X-ray radiolucent ruler with numbered graduations while acquiring the images, and the image stitching is based on detecting and matching ruler parts in the images to the corresponding parts of a virtual ruler. To achieve this goal, we first detect the regular spaced graduations on the ruler and the numbers. After graduation labeling, for each image, we have the location and the associated number for every graduation on the ruler. Then, we initialize the panoramic X-ray image with the virtual ruler, and we "paste" each image by aligning the detected ruler part on the original image, to the corresponding part of the virtual ruler on the panoramic image. Our method is based on ruler matching but without the requirement of matching similar feature points in pairwise images, and thus, we do not necessarily require overlap between the images. We tested our method on eight different datasets of X-ray images, including long bones and a complete spine. Qualitative and quantitative experiments show that our method achieves good results.

  14. Testing coordinate measuring arms with a geometric feature-based gauge: in situ field trials

    International Nuclear Information System (INIS)

    This work describes in detail the definition of a procedure for calibrating and evaluating coordinate measuring arms (AACMMs or CMAs). CMAs are portable coordinate measuring machines that have been widely accepted in industry despite their sensitivity to the skill and experience of the operator in charge of the inspection task. The procedure proposed here is based on the use of a dimensional gauge that incorporates multiple geometric features, specifically designed for evaluating the measuring technique when CMAs are used, at company facilities (workshops or laboratories) and by the usual operators who handle these devices in their daily work. After establishing the procedure and manufacturing the feature-based gauge, the research project was complemented with diverse in situ field tests performed with the collaboration of companies that use these devices in their inspection tasks. Some of the results are presented here, not only comparing different operators but also comparing different companies. The knowledge extracted from these experiments has allowed the procedure to be validated, the defects of the methodologies currently used for in situ inspections to be detected, and substantial improvements for increasing the reliability of these portable instruments to be proposed. (paper)

  15. Testing coordinate measuring arms with a geometric feature-based gauge: in situ field trials

    Science.gov (United States)

    Cuesta, E.; Alvarez, B. J.; Patiño, H.; Telenti, A.; Barreiro, J.

    2016-05-01

    This work describes in detail the definition of a procedure for calibrating and evaluating coordinate measuring arms (AACMMs or CMAs). CMAs are portable coordinate measuring machines that have been widely accepted in industry despite their sensitivity to the skill and experience of the operator in charge of the inspection task. The procedure proposed here is based on the use of a dimensional gauge that incorporates multiple geometric features, specifically designed for evaluating the measuring technique when CMAs are used, at company facilities (workshops or laboratories) and by the usual operators who handle these devices in their daily work. After establishing the procedure and manufacturing the feature-based gauge, the research project was complemented with diverse in situ field tests performed with the collaboration of companies that use these devices in their inspection tasks. Some of the results are presented here, not only comparing different operators but also comparing different companies. The knowledge extracted from these experiments has allowed the procedure to be validated, the defects of the methodologies currently used for in situ inspections to be detected, and substantial improvements for increasing the reliability of these portable instruments to be proposed.

  16. Comparison of MODIS and VIIRS cloud properties with ARM ground-based observations over Finland

    Science.gov (United States)

    Sporre, Moa K.; O'Connor, Ewan J.; Håkansson, Nina; Thoss, Anke; Swietlicki, Erik; Petäjä, Tuukka

    2016-07-01

    Cloud retrievals from the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments aboard the satellites Terra and Aqua and the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard the Suomi-NPP satellite are evaluated using a combination of ground-based instruments providing vertical profiles of clouds. The ground-based measurements are obtained from the Atmospheric Radiation Measurement (ARM) programme mobile facility, which was deployed in Hyytiälä, Finland, between February and September 2014 for the Biogenic Aerosols - Effects on Clouds and Climate (BAECC) campaign. The satellite cloud parameters cloud top height (CTH) and liquid water path (LWP) are compared with ground-based CTH obtained from a cloud mask created using lidar and radar data and LWP acquired from a multi-channel microwave radiometer. Clouds from all altitudes in the atmosphere are investigated. The clouds are diagnosed as single or multiple layer using the ground-based cloud mask. For single-layer clouds, satellites overestimated CTH by 326 m (14 %) on average. When including multilayer clouds, satellites underestimated CTH by on average 169 m (5.8 %). MODIS collection 6 overestimated LWP by on average 13 g m-2 (11 %). Interestingly, LWP for MODIS collection 5.1 is slightly overestimated by Aqua (4.56 %) but is underestimated by Terra (14.3 %). This underestimation may be attributed to a known issue with a drift in the reflectance bands of the MODIS instrument on Terra. This evaluation indicates that the satellite cloud parameters selected show reasonable agreement with their ground-based counterparts over Finland, with minimal influence from the large solar zenith angle experienced by the satellites in this high-latitude location.

  17. [Study for lung sound acquisition module based on ARM and Linux].

    Science.gov (United States)

    Lu, Qiang; Li, Wenfeng; Zhang, Xixue; Li, Junmin; Liu, Longqing

    2011-07-01

    A acquisition module with ARM and Linux as a core was developed. This paper presents the hardware configuration and the software design. It is shown that the module can extract human lung sound reliably and effectively.

  18. Implementation of a wireless ECG acquisition SoC for IEEE 802.15.4 (ZigBee) applications.

    Science.gov (United States)

    Wang, Liang-Hung; Chen, Tsung-Yen; Lin, Kuang-Hao; Fang, Qiang; Lee, Shuenn-Yuh

    2015-01-01

    This paper presents a wireless biosignal acquisition system-on-a-chip (WBSA-SoC) specialized for electrocardiogram (ECG) monitoring. The proposed system consists of three subsystems, namely, 1) the ECG acquisition node, 2) the protocol for standard IEEE 802.15.4 ZigBee system, and 3) the RF transmitter circuits. The ZigBee protocol is adopted for wireless communication to achieve high integration, applicability, and portability. A fully integrated CMOS RF front end containing a quadrature voltage-controlled oscillator and a 2.4-GHz low-IF (i.e., zero-IF) transmitter is employed to transmit ECG signals through wireless communication. The low-power WBSA-SoC is implemented by the TSMC 0.18-μm standard CMOS process. An ARM-based displayer with FPGA demodulation and an RF receiver with analog-to-digital mixed-mode circuits are constructed as verification platform to demonstrate the wireless ECG acquisition system. Measurement results on the human body show that the proposed SoC can effectively acquire ECG signals.

  19. Implementation of a wireless ECG acquisition SoC for IEEE 802.15.4 (ZigBee) applications.

    Science.gov (United States)

    Wang, Liang-Hung; Chen, Tsung-Yen; Lin, Kuang-Hao; Fang, Qiang; Lee, Shuenn-Yuh

    2015-01-01

    This paper presents a wireless biosignal acquisition system-on-a-chip (WBSA-SoC) specialized for electrocardiogram (ECG) monitoring. The proposed system consists of three subsystems, namely, 1) the ECG acquisition node, 2) the protocol for standard IEEE 802.15.4 ZigBee system, and 3) the RF transmitter circuits. The ZigBee protocol is adopted for wireless communication to achieve high integration, applicability, and portability. A fully integrated CMOS RF front end containing a quadrature voltage-controlled oscillator and a 2.4-GHz low-IF (i.e., zero-IF) transmitter is employed to transmit ECG signals through wireless communication. The low-power WBSA-SoC is implemented by the TSMC 0.18-μm standard CMOS process. An ARM-based displayer with FPGA demodulation and an RF receiver with analog-to-digital mixed-mode circuits are constructed as verification platform to demonstrate the wireless ECG acquisition system. Measurement results on the human body show that the proposed SoC can effectively acquire ECG signals. PMID:25561447

  20. Single SOC Test Challenge for Blu-ray DVD

    Institute of Scientific and Technical Information of China (English)

    Don Blair; Keita Gunji

    2005-01-01

    The Blu-ray DVD single chip SOC architecture, challenging high speed and high fidelity mixed signal test requirements and test solutions are introduced. COT reductions to make this a mass production low cost test approach is also described.

  1. Gesture Therapy: A Vision-Based System for Arm Rehabilitation after Stroke

    Science.gov (United States)

    Sucar, L. Enrique; Azcárate, Gildardo; Leder, Ron S.; Reinkensmeyer, David; Hernández, Jorge; Sanchez, Israel; Saucedo, Pedro

    Each year millions of people in the world survive a stroke, in the U.S. alone the figure is over 600,000 people per year. Movement impairments after stroke are typically treated with intensive, hands-on physical and occupational therapy for several weeks after the initial injury. However, due to economic pressures, stroke patients are receiving less therapy and going home sooner, so the potential benefit of the therapy is not completely realized. Thus, it is important to develop rehabilitation technology that allows individuals who had suffered a stroke to practice intensive movement training without the expense of an always-present therapist. Current solutions are too expensive, as they require a robotic system for rehabilitation. We have developed a low-cost, computer vision system that allows individuals with stroke to practice arm movement exercises at home or at the clinic, with periodic interactions with a therapist. The system integrates a web based virtual environment for facilitating repetitive movement training, with state-of-the art computer vision algorithms that track the hand of a patient and obtain its 3-D coordinates, using two inexpensive cameras and a conventional personal computer. An initial prototype of the system has been evaluated in a pilot clinical study with promising results.

  2. Sensor-based whole-arm obstacle avoidance utilizing ASIC technology

    International Nuclear Information System (INIS)

    Operation of manipulator systems in poorly defined work environments often presents a significant hazard to both the robotic assembly and the environment. In applications relating to the Environmental Restoration and Waste Management (ER ampersand WM) Program, many of the environments are considered hazardous, both, in the structure and composition of the environment Use of a sensing system that provides information to the manipulator control unit regarding obstacles in close proximity will provide protection against collisions. In this paper, a hierarchical design and implementation of a whole-arm obstacle avoidance system is presented. The system is based on capacitive sensors configured as bracelets for proximity sensing. Each bracelet contains a number of sensor nodes and a processor for sensor node control and readout, and communications with a higher level host, common to all bracelets. The host controls the entire sensing network and communicates proximity information to the manipulator controller. The overall architecture of this system is discussed with detail on the individual system modules. Details of an application specific integrated circuit (ASIC) designed to implement the sensor node electronics are presented. Justifications for the general measurement methods and associated implementation are discussed. Additionally, the current state of development including measured dam is presented

  3. Sensor-based whole-arm obstacle avoidance utilizing ASIC technology

    Science.gov (United States)

    Wintenberg, A. L.; Ericson, M. N.; Babcock, S. M.; Armstrong, G. A.; Britton, C. L., Jr.; Butler, P. L.; Hamel, W. R.; Newport, D. F.

    Operation of manipulator systems in poorly defined work environments often presents a significant hazard to both the robotic assembly and the environment. In applications relating to the Environmental Restoration and Waste Management (ER&WM) Program, many of the environments are considered hazardous, both, in the structure and composition of the environment. Use of a sensing system that provides information to the manipulator control unit regarding obstacles in close proximity will provide protection against collisions. A hierarchical design and implementation of a whole-arm obstacle avoidance system is presented. The system is based on capacitive sensors configured as bracelets for proximity sensing. Each bracelet contains a number of sensor nodes and a processor for sensor node control and readout, and communications with a higher level host, common to all bracelets. The host controls the entire sensing network and communicates proximity information to the manipulator controller. The overall architecture of this system is discussed with detail on the individual system modules. Details of an application specific integrated circuit (ASIC) designed to implement the sensor node electronics are presented. Justifications for the general measurement methods and associated implementation are discussed. Additionally, the current state of development including measured data is presented.

  4. Integrated vision-based robotic arm interface for operators with upper limb mobility impairments.

    Science.gov (United States)

    Jiang, Hairong; Wachs, Juan P; Duerstock, Bradley S

    2013-06-01

    An integrated, computer vision-based system was developed to operate a commercial wheelchair-mounted robotic manipulator (WMRM). In this paper, a gesture recognition interface system developed specifically for individuals with upper-level spinal cord injuries (SCIs) was combined with object tracking and face recognition systems to be an efficient, hands-free WMRM controller. In this test system, two Kinect cameras were used synergistically to perform a variety of simple object retrieval tasks. One camera was used to interpret the hand gestures to send as commands to control the WMRM and locate the operator's face for object positioning. The other sensor was used to automatically recognize different daily living objects for test subjects to select. The gesture recognition interface incorporated hand detection, tracking and recognition algorithms to obtain a high recognition accuracy of 97.5% for an eight-gesture lexicon. An object recognition module employing Speeded Up Robust Features (SURF) algorithm was performed and recognition results were sent as a command for "coarse positioning" of the robotic arm near the selected daily living object. Automatic face detection was also provided as a shortcut for the subjects to position the objects to the face by using a WMRM. Completion time tasks were conducted to compare manual (gestures only) and semi-manual (gestures, automatic face detection and object recognition) WMRM control modes. The use of automatic face and object detection significantly increased the completion times for retrieving a variety of daily living objects. PMID:24187264

  5. Integrated vision-based robotic arm interface for operators with upper limb mobility impairments.

    Science.gov (United States)

    Jiang, Hairong; Wachs, Juan P; Duerstock, Bradley S

    2013-06-01

    An integrated, computer vision-based system was developed to operate a commercial wheelchair-mounted robotic manipulator (WMRM). In this paper, a gesture recognition interface system developed specifically for individuals with upper-level spinal cord injuries (SCIs) was combined with object tracking and face recognition systems to be an efficient, hands-free WMRM controller. In this test system, two Kinect cameras were used synergistically to perform a variety of simple object retrieval tasks. One camera was used to interpret the hand gestures to send as commands to control the WMRM and locate the operator's face for object positioning. The other sensor was used to automatically recognize different daily living objects for test subjects to select. The gesture recognition interface incorporated hand detection, tracking and recognition algorithms to obtain a high recognition accuracy of 97.5% for an eight-gesture lexicon. An object recognition module employing Speeded Up Robust Features (SURF) algorithm was performed and recognition results were sent as a command for "coarse positioning" of the robotic arm near the selected daily living object. Automatic face detection was also provided as a shortcut for the subjects to position the objects to the face by using a WMRM. Completion time tasks were conducted to compare manual (gestures only) and semi-manual (gestures, automatic face detection and object recognition) WMRM control modes. The use of automatic face and object detection significantly increased the completion times for retrieving a variety of daily living objects.

  6. FXR induces SOCS3 and suppresses hepatocellular carcinoma

    OpenAIRE

    Guo, Fei; Xu, Zhizhen; Zhang, Yan; Jiang, Peng; Huang, Gang; Chen, Shan; Lyu, Xilin; Zheng, Ping; Zhao, Xin; Zeng, Yijun; Wang, Shuguang; He, Fengtian

    2015-01-01

    Suppressor of cytokine signaling 3 (SOCS3) is regarded as a vital repressor in the liver carcinogenesis mainly by inhibiting signal transducer and activator of transcription 3 (STAT3) activity. Farnesoid X Receptor (FXR), highly expressed in liver, has an important role in protecting against hepatocellular carcinoma (HCC). However, it is unclear whether the tumor suppressive activity of FXR involves the regulation of SOCS3. In the present study, we found that activation of FXR by its specific...

  7. Ion temperature in SOC and IOC discharges in ASDEX

    International Nuclear Information System (INIS)

    Active and passive charge exchange measurements were made to investigate the behaviour of the central ion temperature and the temperature profile for SOC and IOC discharges in ASDEX. Both methods show an increase in the central ion temperature during transition from SOC to IOC. Both methods also show a wider temperature profile for ions than for electrons. Peaking of the ion temperature profile during IOC cannot be definitely concluded from the measurements. (author) 7 refs., 4 figs

  8. Miscanthus-derived SOC: numerically declining over soil depths

    Science.gov (United States)

    Hu, Yaxian; Schäfer, Gerhard; Duplay, Joëlle; Kuhn, Nikolaus J.

    2016-04-01

    Miscanthus is one of the most efficient perennial bioenergy crops for wide establishment and distribution. Most of the previous reports had shown the benefits of Miscanthus cultivation in soil organic carbon (SOC) sequestration and greenhouse gas emissions (GHG) mitigation. However, some other papers pointed out that the Miscanthus-derived SOC is mainly of particulate organic matter and the labile quality of particulate organic matter may bear great uncertainties in GHGs emissions. This urges the necessity to investigate the quality and mineralization potential of Miscanthus-derived SOC. This study investigated soil profiles deep to 1 m from 20 yr Miscanthus fields in France and Switzerland. Soil organic carbon (SOC) concentration and δ13C compositions of all the soil layers (0-10, 10-40, 40-70 and 70-100 cm) were determined. Our results show that: 1) Miscanthus cultivation can in general increase the SOC stocks compared to the Grassland, while the benefits of SOC sequestration may only constrain to the surface soil. Isotopically, the Miscanthus-derived SOC ranged from 69% the top 10 cm soil down to only 7% in the 70 to 100 cm layer, cautioning the use of SOC stocks on the surface soil to estimate the total net benefits of Miscanthus cultivation in terms of sequestrating atmospheric CO2. 2) Compared to the Grassland soils, the surface soils on the Miscanthus fields tended to have a risk of acidification (pH values down to 6) and exceeded contents of P and K, adding another precaution to the environmental impacts of Miscanthus cultivation in the entire Upper Rhine Region. Overall, changes of soil characteristics must be included into Life Cycle Assessment to fully evaluate the environmental impacts of long-term Miscanthus cultivation.

  9. ExpressionofSOCS3throughoutliverregeneration isnotregulatedbyDNAmethylation

    Institute of Scientific and Technical Information of China (English)

    Gang Guo; Jie Xia; Ji Bao; Huai-Qiang Sun; Yu-Jun Shi; Hong Bu

    2012-01-01

    BACKGROUND: While suppressor of cytokine signaling 3 (SOCS3) plays a crucial role in suppressing dysplasia and tumorigenesis, it also offers a typical instance of DNA methylation in the regulation of gene transcription, since the promoter region of the SOCS3 gene is rich in CpG islands (CGIs). During liver regeneration initiated by partial hepatectomy, SOCS3 acts as a suppressor to balance the acute-phase response and terminate the regeneration. This study aimed to determine whether the variation of SOCS3 expression throughout liver regeneration is also regulated by its DNA methylation. METHODS: We established a 70%partial hepatectomy mouse model and the animals were sacriifced at indicated times to assess the SOCS3 expression. We performed bisulifte sequencing PCR and DNA sequencing to investigate the detailed cytosine methylation in the SOCS3 gene. RESULTS:Within the promoter sequence, 58 CGIs were identiifed and 30 were found variously methylated before or after operation;however, methylation remained at a very low level. No evidence indicated that the total methylation level or the methylation of any CpG site regularly changed throughout liver regeneration. CONCLUSION: DNA methylation or demethylation seems to be a relatively stable modiifcation of cytosine, but not a dynamic and reversible process to regulate gene transcription in daily and acute pathophysiological events.

  10. Impact of vegetation types on soil organic carbon stocks SOC-S in Mediterranean natural areas

    Science.gov (United States)

    Parras-Alcántara, Luis; Lozano-García, Beatriz; Cantudo-Pérez, Marta

    2015-04-01

    Soils play a key role in the carbon geochemical cycle because they can either emit large quantities of CO2 or on the contrary they can act as a store for carbon. Agriculture and forestry are the only activities that can achieve this effect through photosynthesis and the carbon incorporation into carbohydrates (Parras-Alcántara et al., 2013). The Mediterranean evergreen oak Woodland (MEOW - dehesa) is a type of pasture with scattered evergreen and deciduous oak stands in which cereals are often grown under the tree cover. It is a system dedicated to the combined production of Iberian swine, sheep, fuel wood, coal and cork as well as to hunting. These semi-natural areas still preserve some of the primitive vegetation of the Mediterranean oak forests. The dehesa is a pasture where the herbaceous layer is comprised of either cultivated cereals such as oat, barley and wheat or native vegetation dominated by annual species, which are used as grazing resources. These Iberian open woodland rangelands (dehesas) have been studied from different points of view: hydrologically, with respect to soil organic matter content, as well as in relation to gully erosion, topographical thresholds, soil erosion and runoff production, soil degradation and management practices…etc, among others. The soil organic carbon stock capacity depends not only on abiotic factors such as the mineralogical composition and the climate, but also on soil use and management (Parras et al., 2014 and 2015). In Spanish soils, climate, use and management strongly affect the carbon variability, mainly in soils in dry Mediterranean climates characterized by low organic carbon content, weak structure and readily degradable soils. Hontoria et al. (2004) emphasized that the climate and soil use are two factors that greatly influence carbon content in the Mediterranean climate. This research sought to analyze the SOC stock (SOCS) variability in MEOW - dehesa with cereals, olive grove and Mediterranean oak forest

  11. Refining regional SOC estimates: Accounting for erosion induced within field variability of the vertical distribution of SOC.

    Science.gov (United States)

    Meersmans, Jeroen; Quine, Tim

    2013-04-01

    Recently, soil organic carbon (SOC) is considered as a dynamic soil property largely influencing soil quality and global C-cycling. Consequently, accurate mapping of SOC at the regional or national scale becomes an important issue in order to help policymakers in developing an appropriate soil and climate change management strategy. So far, in these studies, only factors determining the spatial and temporal distribution of SOC at the landscape scale, such as soil type, land use (change), climate and agro-management, were considered. Despite the fact that a few recent studies incorporated as well the distribution of SOC with depth, resulting in an improved representation of the 3D distribution of SOC, most studies only considers topsoil and/or are characterized by simple sampling by site at rather coarse resolution. Consequently, they omit quantification of stable subsoil carbon buried in depositional areas and does not allow to clearly identify significant differences of SOC and erosion at the within field scale. Hence, the variability of SOC at smaller scales in complex terrain driven by lateral soil transport processes (such as soil erosion), is still rather understudied and is not (well) presented in existing regional SOC estimates. Nevertheless, incorporating this smaller level of spatial detail will most probably have a major influence on SOC mapping and regional SOC stock dynamics' calculations. Consequently, there exists an urgent need in conducting an appropriate soil sampling strategy considering deeper layers and enabling us to detect significant patterns at detailed spatial levels. In this study we aim to unravel the variation of SOC depth distributions along typical hillslope transects under cropland (Devon, UK) and link these to soil redistribution rates and variations in C input, i.e. below and above ground biomass productivity. The radionuclide isotope Caesium-137 (137Cs) was used as proxy for erosion. Furthermore, a soil sampling strategy was

  12. EXPRESSION OF SOCS3 AND SOCS5 MRNAS IN PERIPHERAL BLOOD MONONUCLEARS FROM THE PATIENTS WITH BRONCHIAL ASTHMA

    Directory of Open Access Journals (Sweden)

    V. V. Lim

    2014-01-01

    Full Text Available We observed sixty patients with allergic bronchial asthma (ABA and 54 with non-allergic bronchial asthma (NABA. Quantitative SOCS3 and SOCS5 mRNA expression was evaluated by means of real-time PCR. Eighteen healthy persons served as a control group. In patients with bronchial asthma (irrespectively of pathogenetic form, a significant increase of SOCS3 transcription factor expression was detected in peripheral blood mononuclears, as compared with control group. This increase was more pronounced in NABA group. The mRNA SOCS5 level was significantly decreased in bronchial asthma patients, as compared to control group, especially, in ABA subgroup rather than in NABA patients. Thus, an increased expression of SOCS3 mRNA in BA patients could be regarded as a protective antiinflammatory response Decrease of SOCS5 mRNA expression in patients with bronchial asthma (being more pronounced in ABA, may be indicative for a deficiency in negative feedback regulation of gene transcription in allergic bronchial asthma.

  13. Dynamic Structure Optimization Design of Lower Control Arm Based on ESL

    Directory of Open Access Journals (Sweden)

    Lihui Zhao

    2012-11-01

    Full Text Available Structure optimization techniques under static load conditions have been widely used in automotive industry for lightweight and performance improvement of modern cars. However, these static load conditions could not represent all the severe situations of automobile parts which subjected to complex loads varying with time, especially for lower control arm of front suspension. In this study, dynamic optimization of lower control arm was performed by combing traditional static load optimization techniques and multi-body dynamics by Equivalent Static Load (ESL. And the best draw-bead distribution of the stamped lower control arm was attained. Comparing the MBD analysis results of the new design derived from dynamic optimization and original structure, results show that the strength and stiffness was increased significantly while the mass was almost unchanged.

  14. Real-Time Discrete Adaptive Control of Robot Arm Based on Digital Signal Processing

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    A discrete model reference adaptive controller of robot arm is obtained by integrating the reduced dynamic model of robot, model reference adaptive control (MRAC) and digital signal processing (DSP) computer system into an electromechanical system. With the DSP computer system, the control signal of each joint of the robot arm can be processed in real time and independently. The simulation and experiment results show that with the control strategy, the robot achieved a good trajectory following precision, a good decoupling performance and a high real-time adaptivity.

  15. Robotic arm

    Science.gov (United States)

    Kwech, Horst

    1989-04-18

    A robotic arm positionable within a nuclear vessel by access through a small diameter opening and having a mounting tube supported within the vessel and mounting a plurality of arm sections for movement lengthwise of the mounting tube as well as for movement out of a window provided in the wall of the mounting tube. An end effector, such as a grinding head or welding element, at an operating end of the robotic arm, can be located and operated within the nuclear vessel through movement derived from six different axes of motion provided by mounting and drive connections between arm sections of the robotic arm. The movements are achieved by operation of remotely-controllable servo motors, all of which are mounted at a control end of the robotic arm to be outside the nuclear vessel.

  16. Robust EMG sensing system based on data fusion for myoelectric control of a robotic arm

    Directory of Open Access Journals (Sweden)

    Soria Carlos M

    2009-02-01

    Full Text Available Abstract Background Myoelectric control of a robotic manipulator may be disturbed by failures due to disconnected electrodes, interface impedance changes caused by movements, problems in the recording channel and other various noise sources. To correct these problems, this paper presents two fusing techniques, Variance Weighted Average (VWA and Decentralized Kalman Filter (DKF, both based on the myoelectric signal variance as selecting criterion. Methods Tested in five volunteers, a redundant arrangement was obtained with two pairs of electrodes for each recording channel. The myoelectric signals were electronically amplified, filtered and digitalized, while the processing, fusion algorithms and control were implemented in a personal computer under MATLAB® environment and in a Digital Signal Processor (DSP. The experiments used an industrial robotic manipulator BOSCH SR-800, type SCARA, with four degrees of freedom; however, only the first joint was used to move the end effector to a desired position, the latter obtained as proportional to the EMG amplitude. Results Several trials, including disconnecting and reconnecting one electrode and disturbing the signal with synthetic noise, were performed to test the fusion techniques. The results given by VWA and DKF were transformed into joint coordinates and used as command signals to the robotic arm. Even though the resultant signal was not exact, the failure was ignored and the joint reference signal never exceeded the workspace limits. Conclusion The fault robustness and safety characteristics of a myoelectric controlled manipulator system were substantially improved. The proposed scheme prevents potential risks for the operator, the equipment and the environment. Both algorithms showed efficient behavior. This outline could be applied to myoelectric control of prosthesis, or assistive manipulators to better assure the system functionality when electrode faults or noisy environment are present.

  17. Design of Programmable Automation Controller Based on ARM and Linux%基于ARM-Linux的可编程自动化控制器的设计

    Institute of Scientific and Technical Information of China (English)

    李斌; 陈富林; 李森; 王凯

    2011-01-01

    Based on the understanding of the PAC s function and programming method, a kind of PAC proto-type is discussed in detail. The main structure is introduced first, and later the operation system is deduced thor-oughly , both in hardware and software. Its hardware platform is based on a ARM board, while its software is based on linux as OS, Qt as HMI and Sqlite as database. Finally, analysis indicates that this PAC is of great scalability and portability, and can meet the industry requirements sufficiently.%在理解PAC系统的功能、组成和编程方法基础上,从整体上介绍了一种PAC的实现方案.首先对PAC总体结构作了简要介绍,然后主要对运行系统的整体构架的设计做了详细研究,包括软件及硬件系统的设计.运行系统的硬件平台是基于ARM的嵌入式控制器,软件方面使用linux作为操作系统,Qt作为界面,并支持Sqlite数据库.最后对软PLC系统的性能进行分析,分析结果表明:系统具备了良好的扩展性和移植性,达到了工业领域中的控制要求.

  18. ARM Mentor Selection Process

    Energy Technology Data Exchange (ETDEWEB)

    Sisterson, D. L. [Argonne National Lab. (ANL), Argonne, IL (United States)

    2015-10-01

    The Atmospheric Radiation Measurement (ARM) Program was created in 1989 with funding from the U.S. Department of Energy (DOE) to develop several highly instrumented ground stations to study cloud formation processes and their influence on radiative transfer. In 2003, the ARM Program became a national scientific user facility, known as the ARM Climate Research Facility. This scientific infrastructure provides for fixed sites, mobile facilities, an aerial facility, and a data archive available for use by scientists worldwide through the ARM Climate Research Facility—a scientific user facility. The ARM Climate Research Facility currently operates more than 300 instrument systems that provide ground-based observations of the atmospheric column. To keep ARM at the forefront of climate observations, the ARM infrastructure depends heavily on instrument scientists and engineers, also known as lead mentors. Lead mentors must have an excellent understanding of in situ and remote-sensing instrumentation theory and operation and have comprehensive knowledge of critical scale-dependent atmospheric processes. They must also possess the technical and analytical skills to develop new data retrievals that provide innovative approaches for creating research-quality data sets. The ARM Climate Research Facility is seeking the best overall qualified candidate who can fulfill lead mentor requirements in a timely manner.

  19. Dynamics and fate of SOC in tidal marshes along a salinity gradient (Scheldt estuary, Belgium)

    Science.gov (United States)

    Van de Broek, Marijn; Temmermann, Stijn; Merckx, Roel; Wang, Zhengang; Govers, Gerard

    2016-04-01

    Coastal ecosystems have been attributed the potential to store large amounts of organic carbon (OC), often referred to as blue carbon, of which a considerable amount is stored in tidal marsh soils. Large uncertainties still exist with respect to the amount and controlling factors of soil organic carbon (SOC) stored in these ecosystems. Moreover, most research has focused on SOC dynamics of saltmarshes, while brackish and freshwater marshes are often even more productive and thus receive even larger organic carbon inputs. Therefore, in this study the OC dynamics of tidal marsh soils along an estuarine gradient are studied in order to contribute to our knowledge of 1) the stocks, 2) the controlling factors and 3) the fate of SOC in tidal marshes with different environmental characteristics. This research thus contributes to a better understanding of the potential of coastal environments to store organic carbon under future climatic changes. Soil and vegetation samples are collected in tidal salt-, brackish- and freshwater marshes in the Scheldt estuary (Belgium - The Netherlands). At each tidal marsh, three replicate soil cores up to 1.5m depth in 0.03m increments are collected at locations with both a low and a high elevation. These cores are analyzed for OC, stable C and N isotopes, bulk density and texture. Incubation experiments of topsoil samples were conducted and both aboveground and belowground biomass were collected. The results show that SOC stocks (range: 13,5 - 35,4 kg OC m-2), standing biomass (range: 2000 - 7930 g DW m-2) and potential soil respiration of CO2 (range: 0,03 - 0,12 % per unit OC per day) decrease with increasing salinity. This shows that both the amount of OC from local macrophytes and the quality of the organic matter are important factors controlling the SOC stocks. In addition, based on the analysis of stable C and N isotopes, it appears that when a significant fraction of SOC is derived from local macrophytes, higher SOC stocks are

  20. SOC验证平台的联合架构设计%Co-architecture design of SOC verification platform

    Institute of Scientific and Technical Information of China (English)

    汪洋; 耿相铭

    2013-01-01

    随着芯片行业的不断发展,软件和硬件之间的联系日趋紧密,复杂SOC的设计难点逐渐转移到SoC的验证与调试环节.软硬件协同验证技术作为SOC仿真验证的关键技术,起着越来越重要的作用.文中研究将ARM处理器的指令软件仿真器SocDesigner和RTL硬件仿真器EVE相结合的联合仿真平台架构技术,给出了两个仿真系统通信机制和同步策略,并且以导航模块为例,给出了基于该系统的仿真环境的架构设计和仿真效率的性能测试结果.%With the continuous improvement of SOC' s integration,difficulty of complex SOC' s design gradually shifted to SOC' s verification and debugging step.As the key technology of SOC,the hardware and software co-verification technology plays a more and more important role.This paper studies on the co-simulation platform technology which combines ARM instruction simulator and RTL hardware emulator,and gives out its communication and synchronization strategy,then uses navigation module as an example,presents the design of this architecture and the result of simulation efficiency.

  1. A New Crank Arm-Based Load Cell for the 3D Analysis of the Force Applied by a Cyclist

    Directory of Open Access Journals (Sweden)

    Alexandre Balbinot

    2014-12-01

    Full Text Available This report describes a new crank arm-based force platform designed to evaluate the three-dimensional force applied to the pedals by cyclists in real conditions. The force platform was designed to be fitted on a conventional competition bicycle crankset while data is transmitted wirelessly through a BluetoothTM module and also stored on a SD card. A 3D solid model is created in the SolidWorks (Dassault Systèmes SOLIDWORKS Corp. to analyze the static and dynamic characteristics of the crank arm by using the finite elements technique. Each crankset arm is used as a load cell based on strain gauges configured as three Wheatstone bridges. The signals are conditioned on a printed circuit board attached directly to the structure. The load cell showed a maximum nonlinearity error between 0.36% and 0.61% and a maximum uncertainty of 2.3% referred to the sensitivity of each channel. A roller trainer equipped with an optical encoder was also developed, allowing the measurement of the wheel’s instantaneous velocity.

  2. Development of Stepper motor based Two DOF Robotic Arm Transferring Liquid using Peristaltic Pump

    Directory of Open Access Journals (Sweden)

    Padma Thiagarajan

    2013-02-01

    Full Text Available The aim of this work is to transfer liquid contents from one micro cell to another using two stepper motors and a peristaltic pump. There are two objectives here. One is to develop a low cost roboticarm using stepper motors. The second objective is the control and calibration of the peristaltic pump. All parts are controlled and operated by their respective microcontrollers. Fulfillment of both the objectives leads to an integrated system to transfer liquids from one cell to another. The end effecter of the robotic arm is connected to the peristaltic pump. The pump has two pipes connected to it. Through one pipe it takes in the liquid and through the other pipe it delivers the liquid into the second cell. After transferring one sample of liquid, the arm moves to a cleaning module where the end effecter is cleaned to avoid cross contamination. The robotic arm is built using stepper motors and controlled using Atmega32 microcontroller whereas the peristaltic pump is controlled and calibrated using 8051 microcontroller. The pumping is done with the help of DC motors. As a result, the working of the robotic arm and theperistaltic pump is verified experimentally.

  3. Selection of key terrain attributes for SOC model

    DEFF Research Database (Denmark)

    Greve, Mogens Humlekrog; Adhikari, Kabindra; Chellasamy, Menaka;

    As an important component of the global carbon pool, soil organic carbon (SOC) plays an important role in the global carbon cycle. SOC pool is the basic information to carry out global warming research, and needs to sustainable use of land resources. Digital terrain attributes are often use...... of predictors in Digital soil mapping of SOC. But there are no rules only few empirical guidelines on which digital terrain attributes to use. The aim of this paper was to select and the evaluate 21 digital terrain attributes and use the best for mapping. A typical 7500 km2 region located in Denmark...... was selected, total 2,514,820 data mining models were constructed by 71 differences grid from 12m to 2304m and 22 attributes, 21 attributes derived by DTM and the original elevation. Relative importance and usage of each attributes in every model were calculated. Comprehensive impact rates of each attribute...

  4. Architecture Design of Computing Intensive SoCs

    Institute of Scientific and Technical Information of China (English)

    YUE Yao; ZHANG Chunming; WANG Haixin; BAI Guoqiang; CHEN Hongyi

    2009-01-01

    Most existing system-on-chip (SoC) architectures are for microprocessor-centric designs. They are not suitable for computing intensive SoCs, which have their own configurability, extendibility, perform-ance, and data exchange characteristics. This paper analyzes these characteristics and gives design princi-ples for computing intensive SoCs. Three architectures suitable for different situations are compared with selection criteria given. The architectural design of a high performance network security accelerator (HPNSA) is used to elaborate on the design techniques to fully exploit the performance potential of the ar-chitectures. A behavior-level simulation system is implemented with the C++ programming language to evaluate the HPNSA performance and to obtain the optimum system design parameters. Simulations show that this architecture provides high performance data transfer.

  5. Multi-arm multilateral haptics-based immersive tele-robotic system (HITS) for improvised explosive device disposal

    Science.gov (United States)

    Erickson, David; Lacheray, Hervé; Lai, Gilbert; Haddadi, Amir

    2014-06-01

    This paper presents the latest advancements of the Haptics-based Immersive Tele-robotic System (HITS) project, a next generation Improvised Explosive Device (IED) disposal (IEDD) robotic interface containing an immersive telepresence environment for a remotely-controlled three-articulated-robotic-arm system. While the haptic feedback enhances the operator's perception of the remote environment, a third teleoperated dexterous arm, equipped with multiple vision sensors and cameras, provides stereo vision with proper visual cues, and a 3D photo-realistic model of the potential IED. This decentralized system combines various capabilities including stable and scaled motion, singularity avoidance, cross-coupled hybrid control, active collision detection and avoidance, compliance control and constrained motion to provide a safe and intuitive control environment for the operators. Experimental results and validation of the current system are presented through various essential IEDD tasks. This project demonstrates that a two-armed anthropomorphic Explosive Ordnance Disposal (EOD) robot interface can achieve complex neutralization techniques against realistic IEDs without the operator approaching at any time.

  6. Constitutive SOCS-3 expression protects T-cell lymphoma against growth inhibition by IFNalpha

    DEFF Research Database (Denmark)

    Brender, C; Lovato, P; Sommer, V H;

    2005-01-01

    expression in tumour cells is equal to or higher than in cytokine-stimulated nonmalignant T cells, (ii) SOCS-3 is not mutated in CTCL, (iii) overexpression of SOCS-3 blocks IFNalpha-mediated growth inhibition without affecting Stat3 activation, growth, and apoptosis, and (iv) inhibition of SOCS-3...... by a dominant negative Stat3 (Stat3D) increases the IFNalpha-mediated growth inhibition. Taken together, these data show that SOCS-3 does not inhibit Stat3 activation, growth, and survival in CTCL. In contrast, SOCS3 protects tumour cells against growth inhibition by IFNalpha. Unlike SOCS-1, SOCS-3 is therefore...

  7. SOCS3 promotor hypermethylation and STAT3-NF-κB interaction downregulate SOCS3 expression in human coronary artery smooth muscle cells

    OpenAIRE

    Dhar, Kajari; Rakesh, Kriti; Pankajakshan, Divya; Agrawal, Devendra K

    2013-01-01

    Suppressor of cytokine signaling-3 (SOCS3) is an intracellular negative regulator of cytokine signaling pathway. We recently found significant reduction in SOCS3 expression in coronary artery smooth muscle cells (CASMCs) of atherosclerotic swine and also in vitro cultured cells. Here, we investigated the underlying mechanisms of SOCS3 downregulation by IGF-1 and TNF-α in human CASMCs(hCASMCs). We propose that hypermethylation of CpG islands in the SOCS3 promoter is responsible for decrease in...

  8. Optical Sensors Based on Single on Arm Thin Film Waveguide Interferometer

    Science.gov (United States)

    Sarkisov, S. S.; Diggs, D.; Curley, M.; Adamovsky, Grigory (Technical Monitor)

    2000-01-01

    Single-arm dual-mode optical waveguide interferometer utilizes interference between two modes of different order. Sensing effect results from the change in propagation conditions of the modes caused by the environment. The waveguide is made as an open asymmetric structure containing a dye-doped polymer film onto a quartz substrate. It is more sensitive to the change of environment than its conventional polarimetric analog using orthogonal modes (TE and TM) of the same order. The sensor still preserves the option of operating in polarimetric regime using a variety of mode combinations such as TE(sub 0)/TM(sub 0) (conventional) TE(sub 0)/TM(sub 1), TE(sub 1)/TM(sub 0), or TE(sub 1)/TM(sub 1) but can also work in nonpolarimetric regime using combinations TE(sub 0)/TE(sub 1) or TM(sub 0)/TM(sub 1). Utilization of different mode combinations simultaneously makes the device more versatile. Application of the sensor to gas sensing is based on doping polymer film with an organic indicator dye targeting a particular gaseous reagent. Change of the optical absorption spectrum of the dye caused by the gaseous pollutant results in change of the reactive index of the dye-doped polymer film that can be detected by the sensor. As indicator dyes we utilize Bromocresol Purple doped into polymer poly(methyl) methacrylate that is sensitive to small concentrations of ammonia. The indicator dye demonstrated an irreversible increase in optical absorption near the peak at 350 nm being exposed to 5% ammonia in pure nitrogen at 600 Torr. The dye also showed reversible growth of the absorption peak near 600 nm after exposure to a vapor of standard medical ammonia spirit (65% alcohol). We have built a breadboard prototype of the sensor with He-Ne laser as a light source and with a single mode fiber input and a multimode fiber output. The prototype showed a sensitivity to temperature change of the order of 2 C per 2pi phase shift. The sensitivity of the sensor to the presence of dTy ammonia is

  9. Detachment of Tertiary Dendrite Arms during Controlled Directional Solidification in Aluminum - 7 wt Percent Silicon Alloys: Observations from Ground-based and Microgravity Processed Samples

    Science.gov (United States)

    Grugel, Richard N.; Erdman, Robert; Van Hoose, James R.; Tewari, Surendra; Poirier, David

    2012-01-01

    Electron Back Scattered Diffraction results from cross-sections of directionally solidified aluminum 7wt% silicon alloys unexpectedly revealed tertiary dendrite arms that were detached and mis-oriented from their parent arm. More surprisingly, the same phenomenon was observed in a sample similarly processed in the quiescent microgravity environment aboard the International Space Station (ISS) in support of the joint US-European MICAST investigation. The work presented here includes a brief introduction to MICAST and the directional solidification facilities, and their capabilities, available aboard the ISS. Results from the ground-based and microgravity processed samples are compared and possible mechanisms for the observed tertiary arm detachment are suggested.

  10. A capacitance-based proximity sensor for whole arm obstacle avoidance

    International Nuclear Information System (INIS)

    This paper discusses an application of capacitive sensors for detecting incipient collisions during robot motion in unknown or partially modeled environments. Forty-five sensors capable of detecting obstacles up to 330 mm (13 in.) away were distributed over the surface of a PUMA 560 robot arm. Each sensor consisted of a 4 mm thick, 37 mm diameter rings around 21 mm diameter disks. These sensors can detect both conductive and non-conductive obstacles of arbitrary color and shape. The sensor hardware is reliable and inexpensive, and it may be fabricated using flexible printed circuit boards to provide whole-arm and joint protection for any robot or manipulator. Simple collision avoidance control algorithms that perturb the joint commands from a spaceball to avoid collisions have been implemented on the PUMA 560 robot

  11. Dynamic modeling of dual-arm cooperating manipulators based on Udwadia–Kalaba equation

    Directory of Open Access Journals (Sweden)

    Jia Liu

    2016-07-01

    Full Text Available Dual-arm cooperating manipulators subject to a certain constraint brought about by the desired trajectory and geometric constraint show high nonlinearity and coupling in their dynamic characteristic. Therefore, it is hard to build dynamical equation with traditional Lagrange equation. The Udwadia–Kalaba equation presents a new idea of dynamic modeling of multi-body systems. However, the dynamic modeling of the unconstrained systems still depends on the traditional Lagrange equation and is quite tedious for dual-arm cooperating manipulators. A generalized dynamical equation of multi-link planar manipulators is thus presented and proven to make modeling conveniently. The constraint relationship is established from a new perspective, and the dynamical equation of dual-arm cooperating manipulator subject to the desired trajectory is acquired with the Udwadia–Kalaba equation. The simple approach overcomes the disadvantage of obtaining dynamical equation from traditional Lagrange equation by Lagrange multiplier. The simulation results of varying law of the joint angles and the motion path of the bar prove that the dynamical equation established by this method conforms to reality.

  12. Possibility of Independence in ADL (Activities of Daily Living) for Patients with Cervical Spinal Cord Injuries : An Evaluation based on the Zancolli Classification of Residual Arm Functions

    OpenAIRE

    Yoshimura, Osamu; Takayanagi, Kiyomi; Kobayashi, Ryuji; Hosoda, Masataka; Minematsu, Akira; Sasaki, Hisato; Maejima, Hiroshi; Matsuda, Yuiti; Tanaka, Satiko; Matsuo, Akihisa; Kanemura, Naohiko

    1998-01-01

    For patients with cervical spinal cord injuries to become independent in their ADL (Activities of Daily Living), residual arm function is very important. Also, age, sex, physical strength, obesity, spasticity, pain, contracture and motivation are related. We investigated the possibility of independence in ADL for patients with cervical spinal cord injuries, carrying out our evaluation based on the Zancolli Classification of Residual Arm Functions. Zancolli classification C6BII is taken as the...

  13. Analog and mixed signal test techniques for SoCs

    NARCIS (Netherlands)

    Kerkhoff, Hans G.; Kaminska, Bozena

    2003-01-01

    Submicron technologies, enabling the implementation of SoC's, are gaining acceptance and this represents a major step forward in design and test complexity. As a result, new tools and development flows are needed that will be able to handle the greater design and test challenges of increasingly smal

  14. Correct-by-construction approaches for SoC design

    CERN Document Server

    Sinha, Roopak; Basu, Samik

    2013-01-01

    This book describes an approach for designing Systems-on-Chip such that the system meets precise mathematical requirements. The methodologies presented enable embedded systems designers to reuse intellectual property (IP) blocks from existing designs in an efficient, reliable manner, automatically generating correct SoCs from multiple, possibly mismatching, components.

  15. An Infrastructural IP for Interactive MPEG-4 SoC Functional Verification

    Directory of Open Access Journals (Sweden)

    Trio Adiono

    2009-05-01

    Full Text Available This paper introduces a specific architecture including an infrastructural IP for functional verification and diagnostics, which is suitable for functional core-based testing of an MPEG4 SoC. Our advanced MPEG4 SoC results in a high complexity SoC with limited physical access to many different functional cores. The proposed test method provides direct monitoring and control for each core, which enables core verification at actual speed. It significantly decreases the verification time due to the large number of required test vectors in typical MPEG4 verification. Furthermore, it also makes the system scalable for functional core expansion due to upgrading of standards. The proposed infrastructural IP is also linked to PC-based interactive tools to simplify the verification of individual and integrated cores. It also provides detailed diagnostic data that enables simple system debugging. The debugging tools also feature test-pattern generation and simulation of expected values. Actual system implementation has shown full functionality of our proposed method.

  16. Influenza A virus inhibits type I IFN signaling via NF-kappaB-dependent induction of SOCS-3 expression.

    Directory of Open Access Journals (Sweden)

    Eva-K Pauli

    2008-11-01

    Full Text Available The type I interferon (IFN system is a first line of defense against viral infections. Viruses have developed various mechanisms to counteract this response. So far, the interferon antagonistic activity of influenza A viruses was mainly observed on the level of IFNbeta gene induction via action of the viral non-structural protein 1 (NS1. Here we present data indicating that influenza A viruses not only suppress IFNbeta gene induction but also inhibit type I IFN signaling through a mechanism involving induction of the suppressor of cytokine signaling-3 (SOCS-3 protein. Our study was based on the observation that in cells that were infected with influenza A virus and subsequently stimulated with IFNalpha/beta, phosphorylation of the signal transducer and activator of transcription protein 1 (STAT1 was strongly reduced. This impaired STAT1 activation was not due to the action of viral proteins but rather appeared to be induced by accumulation of viral 5' triphosphate RNA in the cell. SOCS proteins are potent endogenous inhibitors of Janus kinase (JAK/STAT signaling. Closer examination revealed that SOCS-3 but not SOCS-1 mRNA levels increase in an RNA- and nuclear factor kappa B (NF-kappaB-dependent but type I IFN-independent manner early in the viral replication cycle. This direct viral induction of SOCS-3 mRNA and protein expression appears to be relevant for suppression of the antiviral response since in SOCS-3 deficient cells a sustained phosphorylation of STAT1 correlated with elevated expression of type I IFN-dependent genes. As a consequence, progeny virus titers were reduced in SOCS-3 deficient cells or in cells were SOCS-3 expression was knocked-down by siRNA. These data provide the first evidence that influenza A viruses suppress type I IFN signaling on the level of JAK/STAT activation. The inhibitory effect is at least in part due to the induction of SOCS-3 gene expression, which results in an impaired antiviral response.

  17. The Design of a Small UAV's Flight Controller Based on ARM11+CPLD%基于ARM11+CPLD的小型无人机飞行控制器设计

    Institute of Scientific and Technical Information of China (English)

    郑积仕; 蒋新华; 陈兴武

    2012-01-01

    本文针对小型无人机控制精度低、实时性不足的问题,设计了基于ARM11+ CPLD的飞行控制器.阐述该飞行控制器的硬件总体架构,各传感器与ARM11接口设计,CPLD并行多路PWM输入、输出设计;阐述硬件的驱动,导航控制、姿态控制的算法设计与实现.该飞行控制器的飞行测试结果理想.%The design of the flight controller based on ARM11+CPLD is presented in this paper aiming to solve the low accuracy and the inadequacy of real time in the control of UAV (Unamed Aircraft Veheicle). The overall frame of the flight controller hardware, the design of the interface between ARM11 and several sensors and the design of multi parallel PWM controls in CPLD are all presented. Furthermore, this paper also elaborates the hardware drive and the algorithm design and fulfillment of the navigation control and the attitude control. The flight test shows the flight controller works well.

  18. Sensor-based whole-arm obstacle avoidance for unstructured environments

    International Nuclear Information System (INIS)

    Whole-arm obstacle avoidance is needed for a variety of robotic applications in the Environmental Restoration and Waste Management (ER ampersand WM) Program. Typical industrial applications of robotics involve well-defined workspaces, allowing a predetermined knowledge of collision-free paths for manipulator motion. However, many hazardous environments are unstructured or poorly defined, providing a significant potential for collisions between manipulators and the environment. In order to allow applications of robotics in such situations, a sensing system is under development which will provide protection against collisions. Specifics of this system including system architecture and projected implementation are described

  19. A Cryptographic SoC for Robust Protection of Secret Keys in IPTV DRM Systems

    Science.gov (United States)

    Lee, Sanghan; Yang, Hae-Yong; Yeom, Yongjin; Park, Jongsik

    The security level of an internet protocol television (IPTV) digital right management (DRM) system ultimately relies on protection of secret keys. Well known devices for the key protection include smartcards and battery backup SRAMs (BB-SRAMs); however, these devices could be vulnerable to various physical attacks. In this paper, we propose a secure and cost-effective design of a cryptographic system on chip (SoC) that integrates the BB-SRAM with a cell-based design technique. The proposed SoC provides robust safeguard against the physical attacks, and satisfies high-speed and low-price requirements of IPTV set-top boxes. Our implementation results show that the maximum encryption rate of the SoC is 633Mb/s. In order to verify the data retention capabilities, we made a prototype chip using 0.18µm standard cell technology. The experimental results show that the integrated BB-SRAM can reliably retain data with a 1.4µA leakage current.

  20. Breathing motion compensated reconstruction for C-arm cone beam CT imaging: initial experience based on animal data

    Science.gov (United States)

    Schäfer, D.; Lin, M.; Rao, P. P.; Loffroy, R.; Liapi, E.; Noordhoek, N.; Eshuis, P.; Radaelli, A.; Grass, M.; Geschwind, J.-F. H.

    2012-03-01

    C-arm based tomographic 3D imaging is applied in an increasing number of minimal invasive procedures. Due to the limited acquisition speed for a complete projection data set required for tomographic reconstruction, breathing motion is a potential source of artifacts. This is the case for patients who cannot comply breathing commands (e.g. due to anesthesia). Intra-scan motion estimation and compensation is required. Here, a scheme for projection based local breathing motion estimation is combined with an anatomy adapted interpolation strategy and subsequent motion compensated filtered back projection. The breathing motion vector is measured as a displacement vector on the projections of a tomographic short scan acquisition using the diaphragm as a landmark. Scaling of the displacement to the acquisition iso-center and anatomy adapted volumetric motion vector field interpolation delivers a 3D motion vector per voxel. Motion compensated filtered back projection incorporates this motion vector field in the image reconstruction process. This approach is applied in animal experiments on a flat panel C-arm system delivering improved image quality (lower artifact levels, improved tumor delineation) in 3D liver tumor imaging.

  1. Human Arm Motion Tracking by Orientation-Based Fusion of Inertial Sensors and Kinect Using Unscented Kalman Filter.

    Science.gov (United States)

    Atrsaei, Arash; Salarieh, Hassan; Alasty, Aria

    2016-09-01

    Due to various applications of human motion capture techniques, developing low-cost methods that would be applicable in nonlaboratory environments is under consideration. MEMS inertial sensors and Kinect are two low-cost devices that can be utilized in home-based motion capture systems, e.g., home-based rehabilitation. In this work, an unscented Kalman filter approach was developed based on the complementary properties of Kinect and the inertial sensors to fuse the orientation data of these two devices for human arm motion tracking during both stationary shoulder joint position and human body movement. A new measurement model of the fusion algorithm was obtained that can compensate for the inertial sensors drift problem in high dynamic motions and also joints occlusion in Kinect. The efficiency of the proposed algorithm was evaluated by an optical motion tracker system. The errors were reduced by almost 50% compared to cases when either inertial sensor or Kinect measurements were utilized. PMID:27428461

  2. Human Arm Motion Tracking by Orientation-Based Fusion of Inertial Sensors and Kinect Using Unscented Kalman Filter.

    Science.gov (United States)

    Atrsaei, Arash; Salarieh, Hassan; Alasty, Aria

    2016-09-01

    Due to various applications of human motion capture techniques, developing low-cost methods that would be applicable in nonlaboratory environments is under consideration. MEMS inertial sensors and Kinect are two low-cost devices that can be utilized in home-based motion capture systems, e.g., home-based rehabilitation. In this work, an unscented Kalman filter approach was developed based on the complementary properties of Kinect and the inertial sensors to fuse the orientation data of these two devices for human arm motion tracking during both stationary shoulder joint position and human body movement. A new measurement model of the fusion algorithm was obtained that can compensate for the inertial sensors drift problem in high dynamic motions and also joints occlusion in Kinect. The efficiency of the proposed algorithm was evaluated by an optical motion tracker system. The errors were reduced by almost 50% compared to cases when either inertial sensor or Kinect measurements were utilized.

  3. SOCS1 and Regulation of Regulatory T Cells Plasticity

    Directory of Open Access Journals (Sweden)

    Reiko Takahashi

    2014-01-01

    Full Text Available Several reports have suggested that natural regulatory T cells (Tregs lose Forkhead box P3 (Foxp3 expression and suppression activity under certain inflammatory conditions. Treg plasticity has been studied because it may be associated with the pathogenesis of autoimmunity. Some studies showed that a minor uncommitted Foxp3+ T cell population, which lacks hypomethylation at Treg-specific demethylation regions (TSDRs, may convert to effector/helper T cells. Suppressor of cytokine signaling 1 (SOCS1, a negative regulator of cytokine signaling, has been reported to play an important role in Treg cell integrity and function by protecting the cells from excessive inflammatory cytokines. In this review, we discuss Treg plasticity and maintenance of suppression functions in both physiological and pathological settings. In addition, we discuss molecular mechanisms of maintaining Treg plasticity by SOCS1 and other molecules. Such information will be useful for therapy of autoimmune diseases and reinforcement of antitumor immunity.

  4. Fractal Characteristics of Gravity Landform and Its SOC Mechanism

    Institute of Scientific and Technical Information of China (English)

    YAO Lingkan; QI Ying

    2007-01-01

    From the principle of self-organized criticality (SOC), this work presents our current understanding of the relationship between the morphology and the dynamics of the evolution of landforms. First, we validate the assumption: Erosional slopes may be treated as SOC systems. Thus Sand-pile models will reflect the universal process of energy dissipation within the slope accumulation under the self-organizing actions. And the scale and frequency of deposit landforms will be related by Fractal structure. Then, by analyzing the field data, such as landslides, rockfalls and debris flow fans, hi three typical areas, the power law for the magnitude-frequency seems very robust. Furthermore, some problems in application are discussed.

  5. Driving and controlling circuit for full-color OLED based on ARM7%ARM7全彩OLED驱动控制电路设计

    Institute of Scientific and Technical Information of China (English)

    张翔; 蒋泉

    2012-01-01

    介绍了一款全彩无源OLED模块的驱动接口电路及驱动程序的设计.系统采用ARM7系列的LPC2138为控制核心,分别设计了电源电路、下载电路、复位电路和接口电路,并向全彩无源OLED模块提供数据信号和控制信号,从而实现了分辨力为128×128,65×103色的动态全彩图片显示.设计了基于ARM7内核的OLED驱动电路实验系统,可显示红、绿、蓝单色以及全彩图片,为中小尺寸OLED提供了一种低成本、低功耗的单芯片解决方案.%The paper introduces the design of driving circuit, reset circuit, download circuit, interface circuit and driving programs of the full-color passive OLED(organic light emitting device) module in the display system. The system adopts the LPC2138, family of ARM7-core, to control the OLED module. The data and control signals are provided by LPC2138 in order to realize a resolution of 128X 128, 65X 103 dynamic full-color display. Experiment results show that the system can display red, green, blue and full-color pictures, provide a low-cost, low-power and single-chip solution for small sized OLEDs.

  6. Identification of RBC and WBC Count in Human Blood Using ARM Based Instrumentation

    Directory of Open Access Journals (Sweden)

    B.Dodda Basavanagoud

    2015-06-01

    Full Text Available The rapid growth in microelectronics and crunching RISC in the field of bio-medical sciences incorporated of soft tools to diagnose various parameters of human fluids. Conventional method of blood sample analysis makes use of laboratory technique of titration, which is operator-dependent and results in lot of errors depending on the skill of the technician. In order to eliminate the human errors involved in the conventional method, in this paper an attempt has been made to present a capillary centrifuge technique driven by high speed DC motor fed by Morgan chopper and controlled by powerful ARM processor. It results in accurate analysis of the blood samples. The various techniques involved in accurate sensing of speed using timer and generation of firing pulses to thyristor in the Morgan chopper is judiciously achieved. This paper clearly brings out the advantages of the proposed blood measurement technique which effectively gives blood analysis faster and at a low cost.

  7. 基于ARM NEON的H.265解码器优化%H.265 Decoder Optimization Based on ARM NEON

    Institute of Scientific and Technical Information of China (English)

    简欢

    2014-01-01

    基于ARM Cortex A9处理器平台,对NEON处理器的指令和编程优化方法等技术进行了分析,并以此为平台进行了H.265软件解码器的优化实现.在瑞芯微电子的RK3188 SDK开发板上进行了充分测试,实验结果表明NEON处理器可以较好地提高H.265软件解码器的执行效率.

  8. Integration, Verification and Layout of a Complex Multimedia SOC

    CERN Document Server

    Chen, Chien-Liang; Lin, Youn-Long

    2011-01-01

    We present our experience of designing a single-chip controller for advanced digital still camera from specification all the way to mass production. The process involves collaboration with camera system designer, IP vendors, EDA vendors, silicon wafer foundry, package and testing houses, and camera maker. We also co-work with academic research groups to develop a JPEG codec IP and memory BIST and SOC testing methodology. In this presentation, we cover the problems encountered, our solutions, and lessons learned.

  9. C-arm based cone-beam CT using a two-concentric-arc source trajectory: system evaluation

    Science.gov (United States)

    Zambelli, Joseph; Zhuang, Tingliang; Nett, Brian E.; Riddell, Cyril; Belanger, Barry; Chen, Guang-Hong

    2008-03-01

    The current x-ray source trajectory for C-arm based cone-beam CT is a single arc. Reconstruction from data acquired with this trajectory yields cone-beam artifacts for regions other than the central slice. In this work we present the preliminary evaluation of reconstruction from a source trajectory of two concentric arcs using a flat-panel detector equipped C-arm gantry (GE Healthcare Innova 4100 system, Waukesha, Wisconsin). The reconstruction method employed is a summation of FDK-type reconstructions from the two individual arcs. For the angle between arcs studied here, 30°, this method offers a significant reduction in the visibility of cone-beam artifacts, with the additional advantages of simplicity and ease of implementation due to the fact that it is a direct extension of the reconstruction method currently implemented on commercial systems. Reconstructed images from data acquired from the two arc trajectory are compared to those reconstructed from a single arc trajectory and evaluated in terms of spatial resolution, low contrast resolution, noise, and artifact level.

  10. Design of image interaction and display system based on ARM+FPGA%基于 ARM+FPGA 的影像交互与显示系统设计

    Institute of Scientific and Technical Information of China (English)

    吴迪; 李丙玉; 王晓东

    2015-01-01

    To promote the integration of mapping information obtained,image interaction and display are realized based on the dual-core ARM+FPGA hardware architecture in this paper by taking full ad-vantage of the parallel processor FPGA (Field-Programmable Gate Array)and the high-performance ARM processor.The real-time image display is realized based on Qt graphical interface and the driven design of FPGA FIFO (First Input First Output)is completed in the Linux 2.6.36 kernel which uses Linux operating system as the software platform,ARM1 1 as the core of embedded hardware processor and FPGA as the coprocessor.The test results show that it could achieve high speed VGA (640×480) format image interaction between ARM and FPGA with the maximum frame rate of 26 fps and the maximum transmission bandwidth of 182 Mbps.This system not only has the advantages of small vol-ume, low power consumption, low cost, but also has good performance of stability and functionality.Moreover,it could meet the real-time requirements for the aerial remote sensing system.%为促进航空测绘信息获取的数字化、一体化、实时化,本文利用 FPGA(Field-Programmable Gate Array,即现场可编程门阵列)并行处理的优势结合 ARM 处理器低功耗高性能的特点,基于 ARM+FPGA 的双核硬件架构实现了影像的交互与显示。该系统以 Linux 操作系统为软件开发平台,以 ARM11嵌入式处理器为硬件核心、FPGA 作为协处理器,采用 FPGA 片内 FIFO(First Input First Output,即先进先出存储器)作为 ARM 处理器与 FPGA 之间的高速通信桥梁,针对 Linux 2.6.36内核完成了对 FPGA 设备的驱动设计,并基于 Qt 图形用户界面实现了影像的实时显示。测试结果表明,ARM 处理器与 FPGA 之间能够实现 VGA(640×480)图像的高速交互,帧率可达26帧/s,最大传输带宽为182 Mbps。该系统不仅体积小、功耗低、成本低,而且稳定性好、功能强,能够满足航空遥感摄影系统的实时性要求。

  11. Coordinating a Service Supply Chain under Arms Offset Program’s Intervention by Performance-Based Contracting

    Directory of Open Access Journals (Sweden)

    Yi-Kuei Lin

    2016-01-01

    Full Text Available This paper investigates a support service supply chain for coordinating with a local third-party logistics provider by arms offset program’s intervention and develops a performance-based contracting framework for the coordinating problem, which remains scarce in the literatures. The performance-based contracting framework evaluates payments and profits for the support service by a game-theoretical approach with principal-agent model. We prove that the proposed framework is an effective tool in acquiring the balance between maximum profit and minimum payment for both parties in the coordinating problem without moral hazard issue. A numerical study consolidates the formulated schemes as contracting preference for both parties’ decision with a higher profit margin at a lower customer’s payment.

  12. Study on the expression of SOCS-1 SOCS-3 in liver and spleen of mice induced by acute organophosphorus pesticide poisoning( AOPP)%SOCS-1 SOCS-3在有机磷中毒鼠肝脾中表达的研究

    Institute of Scientific and Technical Information of China (English)

    欧阳艳红; 李松玲; 宋维; 赵宁; 马中富

    2009-01-01

    S-3水平均升高, 与对照组比较差异有统计学意义(P<0.05).统计分析显示, 肝脏中SOCS-1和SOCS-3 mRNA明显正相关(r=0.922,P<0.01) ,脾脏中SOCS-1和SOCS-3 mRNA明显正相关(r=0.957,P<0.01).结论 AOPP可诱导SOCS-1、SOCS-3在肝脾中表达,不同时间点AOPP中毒小鼠肝脏、脾脏中SOCS-1、SOCS-3 mRNA表达升高趋势一致.

  13. Online cell SOC estimation of Li-ion battery packs using a dual time-scale Kalman filtering for EV applications

    International Nuclear Information System (INIS)

    Highlights: ► We use an equivalent circuit model to describe the characteristics of battery. ► A dual time-scale estimator is used to calculate pack average SOC and cell SOC. ► The estimator is based on the dynamic descriptions and extended Kalman filter. ► Three different test cases are designed to validate the proposed method. ► Test results indicate a good performance of the method for EV applications. -- Abstract: For the vehicular operation, due to the voltage and power/energy requirements, the battery systems are usually composed of up to hundreds of cells connected in series or parallel. To accommodate the operation conditions, the battery management system (BMS) should estimate State of Charge (SOC) to facilitate safe and efficient utilization of the battery. The performance difference among the cells makes a pure pack SOC estimation hardly provide sufficient information, which at last affects the computation of available energy and power and the safety of the battery system. So for a reliable and accurate management, the BMS should “know” the SOC of each individual cell. Several possible solutions on this issue have been reported in the recent years. This paper studies a method to determine online all individual cell SOCs of a series-connected battery pack. This method, with an equivalent circuit based “averaged cell” model, estimates the battery pack’s average SOC first, and then incorporates the performance divergences between the “averaged cell” and each individual cell to generate the SOC estimations for all cells. This method is developed based on extended Kalman filter (EKF), and to reduce the computation cost, a dual time-scale implementation is designed. The method is validated using results obtained from the measurements of a Li-ion battery pack under three different tests, and analysis indicates the good performance of the algorithm.

  14. Research and Design of Logistics Monitoring System Based on ARM and 3S%基于ARM-3S的物流监控系统研究与设计

    Institute of Scientific and Technical Information of China (English)

    陈彩华; 龙卫兵

    2011-01-01

    In view of the current situation and demands of the logistics monitoring system, this paper made a deep study of the overall architecture of Logistics monitoring system based on embedded technology, and put forward a design of logistics monitoring network system based on ARM9, General Packed Radio Service (GPRS), Global Position System (GPS) and Radio Frequercy Identification (RFID). Through constructing the overall architecture of the logistics control system and analyzing the implementation of 3S communication network, the intelligent management of the logistics information system was realized, Taking Linux as the operating system and ARM S3C2410X as the core of hardware, and expanding wireless communication, the center can implement the location and rea- time control of the goods which is on the way.%从物流监控系统的现状与需求出发,深入研究了基于嵌入式技术的物流监控系统的整体结构,提出了基于ARM9微处理器、GPRS无线传输、GPS定位以及RFID射频识别技术的物流监控网络体系的设计方案;通过构建物流监控系统的整体架构与分析3S通信网络的实现方案,实现了物流信息的智能化管理;文章在Linux和ARM S3C2410X处理器为核心的终端软硬件系统上,扩展了无线通信模块,有效实现了物流车辆的定位与实时控制、货物在途的相关监测.

  15. SOCS1 und SOCS3 mRNA Expression im Blut im Kontext der perioperativen Immunantwort bei offenen abdominal-chirurgischen Eingriffen

    OpenAIRE

    Schubert, Theresa

    2016-01-01

    Introduction: Each surgery causes a response of the immune system characterized by a complex interaction of cellular and humoral factors. The regulation of these factors is highly significant. An excessive or insufficient immune response can be fatal. SOCS proteins are important regulators of the cytokine signalling. The aim of the present study was to clarify if SOCS1 and SOCS3 are induced in cells of the blood during the perioperative period and whether these changes in expression cor...

  16. DMPD: Regulation of cytokine signaling by SOCS family molecules. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available 14644140 Regulation of cytokine signaling by SOCS family molecules. Fujimoto M, Nak...a T. Trends Immunol. 2003 Dec;24(12):659-66. (.png) (.svg) (.html) (.csml) Show Regulation of cytokine signaling by SOCS family... molecules. PubmedID 14644140 Title Regulation of cytokine signaling by SOCS family molec

  17. SOCS-1 deficiency does not prevent diet-induced insulin resistance

    DEFF Research Database (Denmark)

    Emanuelli, Brice; Macotela, Yazmin; Boucher, Jérémie;

    2008-01-01

    of leptin and the macrophage marker CD68 in white adipose tissue and of SREBP1c and FAS in liver. HFD also induced hyperglycemia in SOCS-1 deficient mice with impairment of glucose and insulin tolerance tests. Thus, despite the role of SOCS proteins in obesity-related insulin resistance, SOCS-1 deficiency...

  18. NIRS as an alternative to conventional soil analysis for Greenland soils (focus on SOC)

    DEFF Research Database (Denmark)

    Knadel, Maria; Ogric, Mateja; Adhikari, Kabindra;

    Soil organic carbon (SOC) is an important soil property. It is the main constituents of soil organic matter and a good indicator of soil quality. The estimation and mapping of SOC content could be used to select potential agricultural areas in the Arctic areas. However, conventional analysis of SOC...

  19. Design of Crop Growing Environment Monitoring and Control System Based On ARM and ZIGBEE%基于 ARM 和 ZigBee 的农作物生长环境监控系统的设计

    Institute of Scientific and Technical Information of China (English)

    小玲; 唐四维; 陈立君; 郑龙

    2016-01-01

    The crop growth environment monitoring and control system consisted of host computer ARM and Zig-Bee wireless sensor and actuator network was developed in order to achieve the perception-decision-control of the agri-cultural production process.The ZigBee sensor and actuator network based on CC2530 is able to sample air temperature and humidity,soil temperature and moisture,light illumination intensity,carbon dioxide,water and soil pH,and water dissolved oxygen data,and adjust crop growth environment by means of actuators according to control command from ARM.ARM host computer system in which S5PV210 is used as control core and the corresponding monitoring soft-ware is programmed based on Linux,Qt and SQLite,can implement data transmission between ZigBee coordinator and ARM using UART/SPI serial communication,realize the processing,storage,and management of real-time data from sensor network nodes,and regularly send data to the remote computer center through 3G/LAN port.The test results show that the designed system can achieve the real-time monitoring and control of crop growing environment parame-ters and the data dynamic analysis,historical inquiry,and threshold warning,and the system has good stability and practicality.%为了实现农业生产过程的感知-决策-控制,开发了一套由 ARM 上位机和基于 ZigBee 的传感器/执行器网络构成的农作物生长环境监控系统。基于 CC2530的 ZigBee 传感器/执行器网络能实时采集空气温湿度、土壤温湿度、光照强度、二氧化碳、水质或土壤的 pH 值等数据,并根据 ARM 上位机指令控制执行器状态来调节农作物生长环境参数。以 S5PV210为控制核心、基于 Linux、Qt 和 SQLite 开发的 ARM 上位机系统能采用 UART/SPI 串口通信方式实现 ARM 与 ZigBee 协调器之间的数据传输,实时接收、处理、存储和管理来自传感器网络节点的数据,并定期将数据通过3G 或局域网口上传给远程计算

  20. Synthesis and gas adsorption properties of tetra-armed microporous organic polymer networks based on triphenylamine.

    Science.gov (United States)

    Yang, Xiao; Yao, Shuwen; Yu, Miao; Jiang, Jia-Xing

    2014-04-01

    Two novel tetra-armed microporous organic polymers have been designed and synthesized via a nickel-catalyzed Yamamoto-type Ullmann cross-coupling reaction or Suzuki cross-coupling polycondensation. These polymers are stable in various solvents, including concentrated hydrochloric acid, and are thermally stable. The homocoupled polymer YPTPA shows much higher Brunauer-Emmet-Teller-specific surface area up to 1557 m(2) g(-1) than the copolymer SPTPA (544 m(2) g(-1)), and a high CO2 uptake ability of 3.03 mmol g(-1) (1.13 bar/273 K) with a CO2 /N2 sorption selectivity of 17.3:1. Both polymers show high isosteric heats of CO2 adsorption (22.7-26.5 kJ mol(-1)) because the incorporation of nitrogen atoms into the skeleton of microporous organic polymers enhances the interaction between the pore wall and the CO2 molecules. The values are higher than those of the porous aromatic frameworks, which contain neither additional polar functional groups nor nitrogen atoms, and are rather close to those of previously reported microporous organic polymers containing the nitrogen atoms on the pore wall. These data show that these materials would be potential candidates for applications in post-combustion CO2 capture and sequestration technology.

  1. Research and Utilization of NEON Technology Based on ARM Cortex-A9%ARM Cortex-A9的NEON技术研究及应用

    Institute of Scientific and Technical Information of China (English)

    陈新泽; 杨斌

    2013-01-01

    ARM Cortex-A系列处理器首次集成了NEON技术,可以有效加速多媒体应用.本文基于Cortex-A9处理器,对NEON技术进行研究,并对JM解码器进行NEON优化,提供实际优化效果.在PandaBoard开发板上对不同分辨率的多个测试序列进行了解码测试,测试结果显示,优化后的解码速率提高了,而且提高分辨率并不影响优化效果.

  2. 基于ARM_Linux的次声数据采集系统%Infrasound Data Acquisition System Based on ARM and Embedded Linux

    Institute of Scientific and Technical Information of China (English)

    范春凤; 梁伟; 张来斌

    2010-01-01

    提出了一种基于ARM9和嵌入式Linux的次声数据采集系统的设计方案.采用以ATMELAT91SAM9263微处理器和LatticeXP2系列FPGA为核心的架构,基于双扭环技术、套接字编程等实现了高速多通道数据采集、高精度数据采集、海量存储、远程传输等功能,已经在管道泄漏次声测试实验中投入使用.

  3. 基于ARM7的半自动生化分析仪%A Semi-automated Clinical Chemistry Analyzer Based on ARM7

    Institute of Scientific and Technical Information of China (English)

    叶小岭; 黄俊平; 张颖超; 孙宁

    2007-01-01

    介绍了一种基于ARM7芯片SEP3203的嵌入式半自动生化分析仪,辅以一片PIC单片机作为协处理器.给出了仪器的工作原理.系统硬件电路由存储器子系统、液路子系统、温度控制模块、吸光度采集模块、人机交互模块等模块组成,详细描述了各硬件模块的设计.分析了软件系统的设计.该新型生化分析仪使用方便,性价比高,适用于国内的中小型医疗机构.

  4. Robot arm based flat panel CT-guided electromagnetic tracked spine interventions: phantom and animal model experiments

    Energy Technology Data Exchange (ETDEWEB)

    Penzkofer, Tobias; Isfort, Peter; Bruners, Philipp; Mahnken, Andreas H. [RWTH Aachen University, Applied Medical Engineering, Helmholtz-Institute Aachen, Aachen (Germany); RWTH Aachen University, Department of Diagnostic Radiology, Aachen University Hospital, Aachen (Germany); Wiemann, Christian; Guenther, Rolf W. [RWTH Aachen University, Department of Diagnostic Radiology, Aachen University Hospital, Aachen (Germany); Kyriakou, Yiannis; Kalender, Willi A. [Friedrich-Alexander University of Erlangen-Nuremberg, Institute for Medical Physics, Erlangen (Germany); Schmitz-Rode, Thomas [RWTH Aachen University, Applied Medical Engineering, Helmholtz-Institute Aachen, Aachen (Germany)

    2010-11-15

    To evaluate accuracy and procedure times of electromagnetic tracking (EMT) in a robotic arm mounted flat panel setting using phantom and animal cadaveric models. A robotic arm mounted flat panel (RMFP) was used in combination with EMT to perform anthropomorphic phantom (n = 90) and ex vivo pig based punctures (n = 120) of lumbar facet joints (FJ, n = 120) and intervertebral discs (IVD, n = 90). Procedure accuracies and times were assessed and evaluated. FJ punctures were carried out with a spatial accuracy of 0.8 {+-} 0.9 mm (phantom) and 0.6 {+-} 0.8 mm (ex vivo) respectively. While IVD punctures showed puncture deviations of 0.6 {+-} 1.2 mm (phantom) and 0.5 {+-} 0.6 mm (ex vivo), direct and angulated phantom based punctures had accuracies of 0.8 {+-} 0.9 mm and 1.0 {+-} 1.3 mm. Planning took longer for ex vivo IVD punctures compared to phantom model interventions (39.3 {+-} 17.3 s vs. 20.8 {+-} 5.0 s, p = 0.001) and for angulated vs. direct phantom FJ punctures (19.7 {+-} 5.1 s vs. 28.6 {+-} 7.8 s, p < 0.001). Puncture times were longer for ex vivo procedures when compared to phantom model procedures in both FJ (37.9 {+-} 9.0 s vs. 23.6 {+-} 7.2 s, p = 0.001) and IVD punctures (43.9 {+-} 16.1 s vs. 31.1 {+-} 6.4 s, p = 0.026). The combination of RMFP with EMT provides an accurate method of navigation for spinal interventions such as facet joint punctures and intervertebral disc punctures. (orig.)

  5. Modulation of SOCS protein expression influences the interferon responsiveness of human melanoma cells

    International Nuclear Information System (INIS)

    Endogenously produced interferons can regulate the growth of melanoma cells and are administered exogenously as therapeutic agents to patients with advanced cancer. We investigated the role of negative regulators of interferon signaling known as suppressors of cytokine signaling (SOCS) in mediating interferon-resistance in human melanoma cells. Basal and interferon-alpha (IFN-α) or interferon-gamma (IFN-γ)-induced expression of SOCS1 and SOCS3 proteins was evaluated by immunoblot analysis in a panel of n = 10 metastatic human melanoma cell lines, in human embryonic melanocytes (HEM), and radial or vertical growth phase melanoma cells. Over-expression of SOCS1 and SOCS3 proteins in melanoma cells was achieved using the PINCO retroviral vector, while siRNA were used to inhibit SOCS1 and SOCS3 expression. Tyr701-phosphorylated STAT1 (P-STAT1) was measured by intracellular flow cytometry and IFN-stimulated gene expression was measured by Real Time PCR. SOCS1 and SOCS3 proteins were expressed at basal levels in melanocytes and in all melanoma cell lines examined. Expression of the SOCS1 and SOCS3 proteins was also enhanced following stimulation of a subset of cell lines with IFN-α or IFN-γ. Over-expression of SOCS proteins in melanoma cell lines led to significant inhibition of Tyr701-phosphorylated STAT1 (P-STAT1) and gene expression following stimulation with IFN-α (IFIT2, OAS-1, ISG-15) or IFN-γ (IRF1). Conversely, siRNA inhibition of SOCS1 and SOCS3 expression in melanoma cells enhanced their responsiveness to interferon stimulation. These data demonstrate that SOCS proteins are expressed in human melanoma cell lines and their modulation can influence the responsiveness of melanoma cells to IFN-α and IFN-γ

  6. Real-time Face Detection and Tracking Using Haar Classifier on SoC

    OpenAIRE

    Rajashree Tripathy; R N Daschoudhury

    2014-01-01

    In this paper we intend to Implement a real time Face detection and tracking the head poses position from high definition video using Haar Classifier through Raspberry Pi BCM2835 CPU processor which is a combination of SoC with GPU based Architecture. OV5647 CMOS Image sensor with 5-megapixel used for obtaining high definition video H.264 video data via GPU’s hardware video decoder to improve the playback of H.264 Video data supporting from 1080p at 30fps with complete user control over fo...

  7. Phoenix Stretches its Arm

    Science.gov (United States)

    2008-01-01

    [figure removed for brevity, see original site] Click on image for animation The Phoenix spacecraft is scheduled to begin raising its robotic arm up and out of its stowed configuration on the third Martian day, or Sol 3 (May 28, 2008) of the mission. This artist's animation, based on engineering models, shows how Phoenix will accomplish this task. First, its wrist actuator will rotate, releasing its launch-restraint pin. Next, the forearm moves up, releasing the elbow launch-restraint pin. The elbow will then move up and over in small steps, a process referred to as 'staircasing.' This ensures that the arm's protective biobarrier wrap, now unpeeled and lying to the side of the arm, will not get in the way of the arm's deployment. The arm is scheduled to straighten all the way out on Sol 4 (May 29, 2008), after engineers have reviewed images and telemetry data from the spacecraft showing that the biobarrier material has been cleared. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  8. A new geometric-based model to accurately estimate arm and leg inertial estimates.

    Science.gov (United States)

    Wicke, Jason; Dumas, Geneviève A

    2014-06-01

    Segment estimates of mass, center of mass and moment of inertia are required input parameters to analyze the forces and moments acting across the joints. The objectives of this study were to propose a new geometric model for limb segments, to evaluate it against criterion values obtained from DXA, and to compare its performance to five other popular models. Twenty five female and 24 male college students participated in the study. For the criterion measures, the participants underwent a whole body DXA scan, and estimates for segment mass, center of mass location, and moment of inertia (frontal plane) were directly computed from the DXA mass units. For the new model, the volume was determined from two standing frontal and sagittal photographs. Each segment was modeled as a stack of slices, the sections of which were ellipses if they are not adjoining another segment and sectioned ellipses if they were adjoining another segment (e.g. upper arm and trunk). Length of axes of the ellipses was obtained from the photographs. In addition, a sex-specific, non-uniform density function was developed for each segment. A series of anthropometric measurements were also taken by directly following the definitions provided of the different body segment models tested, and the same parameters determined for each model. Comparison of models showed that estimates from the new model were consistently closer to the DXA criterion than those from the other models, with an error of less than 5% for mass and moment of inertia and less than about 6% for center of mass location. PMID:24735506

  9. 基于ARM的微型打印机研究与设计%The Research and Design for Micro-Printer Based on ARM

    Institute of Scientific and Technical Information of China (English)

    冯艳娜

    2011-01-01

    With economic development, improvement of living standards of people, the requirement of micro-printer is increasing.Usually, the micro-printer clip is controlled by single-chip. As a result of single-chip's performance limitations, embedded ARM has gradually replaced it. Account of the cost, performance, power consumption, security and other aspects, using of ARM to control micro-printer clip is a good choice. This paper introduces a micro-printer based on ARM which controls the M- 15011 printer core by ARM7 S3C44B0X.%随着经济的发展和人们生活水平的提高,行业用户对于微型打印机的需求不断增长.微型打印机多由单片机控制,由于单片机性能所限,考虑成本、性能,功耗、安全等各方面的话,采用ARM主板是很不错的选择.本文介绍了基于ARM的微机打印机的硬件、软件设计与实现.系统采用ARM7 S3C44BOX芯片控制EPSON公司M-150Ⅱ型打印机芯实现了微型打印功能.

  10. Low Noise Readout Circuit for Biosensor SoC

    Institute of Scientific and Technical Information of China (English)

    PAN Yin-song; KONG Mou-fu; LI Xiang-quan; WANG Li

    2008-01-01

    Presented is a low noise interface circuit that is tuned to the needs of self-assembly monolayers biosensor SoC. The correlated double sampling(CDS) unit of the readout circuit can reduce 1/f noise, KTC noise and fixed noise of micro arrays effectively. The circuit is simulated in a 0.6 μm/level 7 standard CMOS process, and the simulated results show the output voltage has a good linearity with the transducing current of the micro arrays. This is a novel circuit including four amplifiers sharing a common half-circuit and the noise reducing CDS unit. It could be widely used for micro array biosensors.

  11. Cardiac C-arm CT: 4D non-model based heart motion estimation and its application

    Science.gov (United States)

    Prümmer, M.; Fahrig, R.; Wigström, L.; Boese, J.; Lauritsch, G.; Strobel, N.; Hornegger, J.

    2007-03-01

    The combination of real-time fluoroscopy and 3D cardiac imaging on the same C-arm system is a promising technique that might improve therapy planning, guiding, and monitoring in the interventional suite. In principal, to reconstruct a 3D image of the beating heart at a particular cardiac phase, a complete set of X-ray projection data representing that phase is required. One approximate approach is the retrospectively ECG-gated FDK reconstruction (RG-FDK). From the acquired data set of N s multiple C-arm sweeps, those projection images which are acquired closest in time to the desired cardiac phase are retrospectively selected. However, this approach uses only 1/ N s of the obtained data. Our goal is to utilize data from other cardiac phases as well. In order to minimize blurring and motion artifacts, cardiac motion has to be compensated for, which can be achieved using a temporally dependent spatial 3D warping of the filtered-backprojections. In this work we investigate the computation of the 4D heart motion based on prior reconstructions of several cardiac phases using RG-FDK. A 4D motion estimation framework is presented using standard fast non-rigid registration. A smooth 4D motion vector field (MVF) represents the relative deformation compared to a reference cardiac phase. A 4D deformation regridding by adaptive supersampling allows selecting any reference phase independently of the set of phases used in the RG-FDK for a motion corrected reconstruction. Initial promising results from in vivo experiments are shown. The subjects individual 4D cardiac MVF could be computed from only three RG-FDK image volumes. In addition, all acquired projection data were motion corrected and subsequently used for image reconstruction to improve the signal-to-noise ratio compared to RG-FDK.

  12. The SOCS2 Ubiquitin Ligase Complex Regulates Growth Hormone Receptor Levels

    DEFF Research Database (Denmark)

    Vesterlund, Mattias; Zadjali, Fahad; Persson, Torbjörn;

    2011-01-01

    to GH is under regulatory control to avoid excessive and off-target effects upon GHR activation. The suppressor of cytokine signalling 2 (SOCS) is a key regulator of GHR sensitivity. This is clearly shown in mice where the SOCS2 gene has been inactivated, which show 30-40% increase in body length, a...... phenotype that is dependent on endogenous GH secretion. SOCS2 is a GH-stimulated, STAT5b-regulated gene that acts in a negative feedback loop to downregulate GHR signalling. Since the biochemical basis for these actions is poorly understood, we studied the molecular function of SOCS2. We demonstrated that...... SOCS2 is part of a multimeric complex with intrinsic ubiquitin ligase activity. Mutational analysis shows that the interaction with Elongin B/C controls SOCS2 protein turnover and affects its molecular activity. Increased GHR levels were observed in livers from SOCS2(-/-) mice and in the absence of...

  13. 基于ARM ESL的AVS亮度插值的软硬件协同的研究%Integration of AVS luminance interpolation based on ARM ESL

    Institute of Scientific and Technical Information of China (English)

    何颖天; 祝永新

    2008-01-01

    提出一种基于ARM ESL平台的软硬件协同的设计方法,并进行了整个AVS解码系统的设计和仿真验证.在具体的软硬件划分中,通过采用硬件加速AVS亮度插值模块,合并了二分与四分之一亮度插值的软件算法, 并用DMA控制器改进插值的硬件结构,从而改善了系统的整体性能.实验中比较十帧720x576的AVS解码图像在原始纯软件环境,同软硬件协同系统的仿真结果.仿真结果说明新的AVS解码系统的体系结构提高了AVS解码系统的整体性能,为AVS系统的软硬件协同设计提供了有益的参照.

  14. Multiple Identifications in Multi-Armed Bandits

    CERN Document Server

    Bubeck, Sébastien; Viswanathan, Nitin

    2012-01-01

    We study the problem of identifying the top $m$ arms in a multi-armed bandit game. Our proposed solution relies on a new algorithm based on successive rejects of the seemingly bad arms, and successive accepts of the good ones. This algorithmic contribution allows to tackle other multiple identifications settings that were previously out of reach. In particular we show that this idea of successive accepts and rejects applies to the multi-bandit best arm identification problem.

  15. 类风湿性关节炎患者血清及关节积液SOCS-1、SOCS-3蛋白的含量检测及意义%The content and value of SOCS-1 and SOCS-3 proteins in serum and synovial fluid of patients with rheumatoid arthritis

    Institute of Scientific and Technical Information of China (English)

    林栋; 汪铁军; 钱一龙

    2012-01-01

    Objective To investigate the changes of the levels of serum and synovial fluid SOCS-1, SOCS-3 in patients with rheumatoid arthritis( RA ), and to explore the value of SOCS-1 and SOCS-3 in inflammatory reaction of rheumatoid arthritis. Methods 49 patients with rheumatoid arthritis were divided into active RA group( 26 cases ) and non- active RA group( 23 cases jaccording to disease activity index. The levels of serum and synovial fluid SOCS-1, SOCS-3 were detected by ELISA, while the 20 health)' control were compiled into the control group. Results The levels of serum SOCS-1 and SOCS-3 were significantly higher in RA group than those in control group( P < 0. 01 ), which were significantly higher in active RA group than those in non- active RA group( P < 0. 01, P < 0. 05 ). The levels of synovial fluid SOCS-1 and SOCS-3 were significantly higher in active RA group than those in non- active RA group( P <0. 05 ). The levels of serum SOCS-1 and SOCS-3 were positively correlated with the serum ESR,CRP,RF ( P <0. 01 ,P <0. 05 ). Conclusions SOCS-1 and SOCS-3 may play an important role in the pathological process of inflammatory response in rheumatoid arthritis, which ma)' be related to activity of rheumatoid arthritis.%目的 观察类风湿性关节炎(RA)患者血清及关节液SOCS-1、SOCS-3蛋白含量的变化,探讨其在炎症中的意义.方法 49例类风湿性关节炎患者根据疾病活动性分为活动期组(26例)及缓解期组(23例),采用ELISA法检测其血清及关节液SOCS-1、SOCS-3蛋白含量,并与20例健康体检者(对照组)进行比较.结果 与对照组比较,RA患者中活动期组与缓解期组血清SOCS-1、SOCS-3蛋白含量均明显升高(P<0.01),其中活动期组血清SOCS-1、SOCS-3含量表达较缓解组明显升高(P<0.01、P<0.05);活动期组患者关节积液SOCS-1、SOCS-3蛋白表达较缓解期组明显升高(P<0.05);活动期组患者血清SOCS-1、SOCS-3蛋白水平均与血清ESR、CRP、RF呈正相关(P<0.01、P<0

  16. Ternary Tree Asynchronous Interconnect Network for GALS' SOC

    Directory of Open Access Journals (Sweden)

    Vivek E. Khetade

    2013-03-01

    Full Text Available Interconnect fabric requires easy integration of computational block operating with unrelated clocks.Thispaper presents asynchronous interconnect with ternary tree asynchronous network for GloballyAsynchronous Locally Synchronous (GALS system-on-chip (SOC. Here architecture is proposed forinterconnection with ternary tree asynchronous network where ratio of number NOC design unit andnumber of router is 4:1,6:2, 8:3,10:4 etc .It is scalable for any number of NOC design unit. It offersaneasy integration of different clock domain with lowcommunication overhead .NOC design unit for GALS‘SOC is formulated by wrapping synchronous module with input port along with input port controller,output port along with output port controller and local clock generator. It creates the interface betweensynchronous to asynchronous and asynchronous to synchronous. For this purpose four port asynchronousrouters is designed with routing element and outputarbitration and buffering with micro-pipeline. Thisinterconnect fabric minimizes silicon area, minimize Latency and maximize throughput. Here functionalmodel is made for TTAN and application MPEG4 is mapped on the Network .Desired traffic pattern isgenerated and performance of the network is evaluated. Significant improvement in the networkperformance parameter has been observed.

  17. Upregulation of miR-572 transcriptionally suppresses SOCS1 and p21 and contributes to human ovarian cancer progression.

    Science.gov (United States)

    Zhang, Xin; Liu, Junling; Zang, Dan; Wu, Shu; Liu, Aibin; Zhu, Jinrong; Wu, Geyan; Li, Jun; Jiang, Lili

    2015-06-20

    Ovarian cancer is a gynecological malignancy with high mortality rates worldwide and novel diagnostic and prognostic markers and therapeutic targets are urgently required. The suppressor of cytokine signaling 1 (SOCS1) and cyclin-dependent kinase inhibitor 1A (p21(KIP)) are known to regulate tumor cell proliferation. However, the mechanisms that regulate these genes have not yet been completely elucidated. In the present study, analysis of a published microarray-based high-throughput assessment (NCBI/E-MTAB-1067) and real-time PCR demonstrated that miR-572 was upregulated in human ovarian cancer tissues and cell lines. Kaplan-Meir analysis indicated that high level expression of miR-572 was associated with poorer overall survival. Ectopic miR-572 promoted ovarian cancer cell proliferation and cell cycle progression in vitro and tumorigenicity in vivo. SOCS1 and p21 were identified as direct targets of miR-572 and suppression of SOCS1 or p21 reversed the inhibiting-function of miR-572-silenced cell on proliferation and tumorigenicity in ovarian cancer cells. Additionally, the expression of miR-572 correlated inversely with the protein expression levels of SOCS1, p21 and positively with Cyclin D1 in ovarian carcinoma specimens. This study demonstrates that miR-572 post-transcriptionally regulates SOCS1 and p21 and may play an important role in ovarian cancer progression; miR-572 may represent a potential therapeutic target for ovarian cancer therapy. PMID:25893382

  18. Research of ARM9-based NIR camellia oil non-destructive detector%基于ARM9的近红外山茶油无损检测仪研究

    Institute of Scientific and Technical Information of China (English)

    刘莹; 胡云龙

    2013-01-01

    基于ARM9微处理器对山茶油无损检测仪的硬件和软件进行了研制,仪器硬件由近红外光谱采集模块和基于ARM9的嵌入式控制系统组成,近红外光谱采集模块包括仪器光路、AD620信号放大和AD7705 A/D转换电路.仪器光路由近红外LED光源、窄带滤光片、菲尼尔透镜和光电检测器组成.嵌入式控制系统以高性价比、低功耗的S3C2440A为核心,包括Nand Flash,SDRAM,USB,UART,LCD显示屏和触摸屏等外围设备.同时在嵌入式Linux系统下完成了AD7705驱动程序和基于QT的系统软件设计,实现了对山茶油的检测.对山茶油体积分数进行了建模和预测,结果表明:预测体积分数值与实际体积分数值基本一致.%The hardware and software of camellia oil non-destructive detector based on ARM9 microprocessor is developed, hardware of the instrument is composed of near infrared (NIR)spectral acquisition module and ARM9-based embedded control system, and the NIR spectral acquisition module of the instrument includes apparatus light path,AD620 signal amplification and AD7705 A/D conversion circuit. Light path of the instrument is made up of NIR LED light source, narrow-band filter, Fresnel lens and photoelectric detector. Embedded control system uses cost-effective and low power consumption S3C2440A as the core, include Nand Flash,SDRAM,USB,UART,LCD display and touch screen peripherals,etc. At the same time,AD7705 driving program and system software design based on QT are completed by embedded Linux system, detection of camellia oil is achieved. Modeling and predicting for volume fraction of camellia oil are carried out, and the results show that the predicted volume fraction values and the actual volume fraction values can basically keep consistent.

  19. Prediction of SOC content by Vis-NIR spectroscopy at European scale using a modified local PLS algorithm

    Science.gov (United States)

    Nocita, M.; Stevens, A.; Toth, G.; van Wesemael, B.; Montanarella, L.

    2012-12-01

    under grassland, with a root mean square error (RMSE) of 3.6 and 7.2 g C kg-1 respectively, while mineral soils under woodland and organic soils predictions were less accurate (RMSE of 11.9 and 51.1 g C kg-1). The RMSE was lower (except for organic soils) when sand content was used as covariate in the selection of the l-PLS predicting neighbours. The obtained results proved that: (i) Although the enormous spatial variability of European soils, the developed modified l-PLS algorithm was able to produce stable calibrations and accurate predictions. (ii) It is essential to invest in spectral libraries built according to sampling strategies, based on soil types, and a standardized laboratory protocol. (iii) Vis-NIR DRS spectroscopy is a powerful and cost effective tool to predict SOC content at regional/continental scales, and should be converted from a pure research discipline into a reference operational method decreasing the uncertainties of SOC monitoring and terrestrial ecosystems carbon fluxes at all scales.

  20. 基于 ARM 嵌入式操作系统的图像处理*%Image Processing Based on ARM Embedded Operating System

    Institute of Scientific and Technical Information of China (English)

    左春雪; 吉喆明; 黄小红

    2015-01-01

    无人清扫机器人是通过感知外界环境信息,传输到主控制器,实现自我决策并进行自主导航和壁障的。针对这个情况,论文通过A RM嵌入式操作系统和视觉检测系统对所拍摄图像进行边缘检测。以微控制器S3C2440为核心通过可输出标准的数字图像信号OV7670图像传感器对图像进行采集、通过邻域平均法对图像进行预处理和通过Sobel算子对图像边缘进行检测,为了进一步提高视觉检测系统的实时性和可靠性,在ARM上移植了嵌入式Red Hat 9.0 Linux操作系统,并通过U‐boot对bootloade进行移植,作为嵌入式操作系统中一段启动代码,起到引导加载启动程序的任务。在嵌入式Linux操作系统中,完成了视觉系统中邻域平均法图像预处理和Sobel边缘检测算子的软件设计。最后通过系统的软硬件调试,实时的显示出所拍摄图像的边缘,为无人清扫机器人提供了视觉信息。%Unmanned cleaning robots through the perception of external environment information ,transfer to the main controller ,and realize self decision ,autonomous navigation and walls .Aiming at this situation ,the paper demonstrates a fact the detecting photograph image edge through the ARM embedded operating system and visual inspection system . S3C2440 is considered as the core controller ,through an OV7670 image sensor that can produce digital image signal acquiring the image ,through the neighborhood averaging method preprocessing the image and through Sobel operator detecting the im‐age edge .In order to further improve the real‐time performance and reliability of the visual inspection system ,we transplant the embedded Red Hat Linux 9 .0 operating system on the ARM ,completing the neighborhood averaging method in visual system image preprocessing and Sobel edge detection operator in the software design .Finally ,by system software and hard‐ware debugging ,we can acquire real

  1. Image Processing Based on ARM Embedded Operating System%基于 ARM 嵌入式操作系统的图像处理*

    Institute of Scientific and Technical Information of China (English)

    左春雪; 吉喆明; 黄小红

    2015-01-01

    无人清扫机器人是通过感知外界环境信息,传输到主控制器,实现自我决策并进行自主导航和壁障的。针对这个情况,论文通过A RM嵌入式操作系统和视觉检测系统对所拍摄图像进行边缘检测。以微控制器S3C2440为核心通过可输出标准的数字图像信号OV7670图像传感器对图像进行采集、通过邻域平均法对图像进行预处理和通过Sobel算子对图像边缘进行检测,为了进一步提高视觉检测系统的实时性和可靠性,在ARM上移植了嵌入式Red Hat 9.0 Linux操作系统,并通过U‐boot对bootloade进行移植,作为嵌入式操作系统中一段启动代码,起到引导加载启动程序的任务。在嵌入式Linux操作系统中,完成了视觉系统中邻域平均法图像预处理和Sobel边缘检测算子的软件设计。最后通过系统的软硬件调试,实时的显示出所拍摄图像的边缘,为无人清扫机器人提供了视觉信息。%Unmanned cleaning robots through the perception of external environment information ,transfer to the main controller ,and realize self decision ,autonomous navigation and walls .Aiming at this situation ,the paper demonstrates a fact the detecting photograph image edge through the ARM embedded operating system and visual inspection system . S3C2440 is considered as the core controller ,through an OV7670 image sensor that can produce digital image signal acquiring the image ,through the neighborhood averaging method preprocessing the image and through Sobel operator detecting the im‐age edge .In order to further improve the real‐time performance and reliability of the visual inspection system ,we transplant the embedded Red Hat Linux 9 .0 operating system on the ARM ,completing the neighborhood averaging method in visual system image preprocessing and Sobel edge detection operator in the software design .Finally ,by system software and hard‐ware debugging ,we can acquire real

  2. 寻常型银屑病患者外周血单个核细胞SOCS-1、SOCS-3 mRNA的表达%The expression of SOCS-1 and SOCS-3 mRNA in patients with psoriasis vulgaris

    Institute of Scientific and Technical Information of China (English)

    郭红卫; 王京滨; 李国明; 李顺凡; 吴志华

    2007-01-01

    目的: 检测细胞因子信号抑制因子SOCS-1、SOCS-3 mRNA在寻常型银屑病患者外周血单个核细胞(PBMC)中的表达.方法: 从20例银屑病患者及20例健康志愿者外周血中分离PBMC,提取RNA,应用逆转录-聚合酶链反应(RT-PCR)方法检测SOCS-1、SOCS-3 mRNA的表达.结果: SOCS-1、SOCS-3 mRNA在银屑病患者中表达,在正常人中无表达,活动期银屑病患者较静止期患者SOCS-1、SOCS-3 mRNA表达增高.结论: SOCS-1、SOCS-3可能在银屑病的Th1免疫反应中发挥作用.

  3. Impact of STAT/SOCS mRNA Expression Levels after Major Injury

    Directory of Open Access Journals (Sweden)

    M. Brumann

    2014-01-01

    Full Text Available Background. Fulminant changes in cytokine receptor signalling might provoke severe pathological alterations after multiple trauma. The aim of this study was to evaluate the posttraumatic imbalance of the innate immune system with a special focus on the STAT/SOCS family. Methods. 20 polytraumatized patients were included. Blood samples were drawn 0 h–72 h after trauma; mRNA expression profiles of IL-10, STAT 3, SOCS 1, and SOCS 3 were quantified by qPCR. Results. IL-10 mRNA expression increased significantly in the early posttraumatic period. STAT 3 mRNA expressions showed a significant maximum at 6 h after trauma. SOCS 1 levels significantly decreased 6 h–72 h after trauma. SOCS 3 levels were significantly higher in nonsurvivors 6 h after trauma. Conclusion. We present a serial, sequential investigation in human neutrophil granulocytes of major trauma patients evaluating mRNA expression profiles of IL-10, STAT 3, SOCS 1, and SOCS 3. Posttraumatically, immune disorder was accompanied by a significant increase of IL-10 and STAT 3 mRNA expression, whereas SOCS 1 mRNA levels decreased after injury. We could demonstrate that death after trauma was associated with higher SOCS 3 mRNA levels already at 6 h after trauma. To support our results, further investigations have to evaluate protein levels of STAT/SOCS family in terms of posttraumatic immune imbalance.

  4. Large Catchment Scale Sediment Transport Modelling of SOC Using Environmental Tracers and Remote Sensing

    Science.gov (United States)

    Willgoose, G. R.; Kunkel, V.; Hancock, G. R.; Wells, T.

    2015-12-01

    Soil's potential as a carbon sink for atmospheric CO2 has been widely discussed. Studies of soil organic carbon (SOC) controls, and the subsequent models derived from their findings, have focussed mainly on North American and European regions, and more recently, in regions such as China. In Australia, agricultural practices have led to losses in SOC. This implies that Australian soils have a large potential for increased sequestration of SOC. Building on previous work, here we examine the spatial and temporal variation in soil organic carbon (SOC) and its controlling factors controls across a large catchment of approximately 650 km2 in the Upper Hunter Valley, New South Wales, Australia, using data collected from two sampling campaigns, (April 2006 and June-July 2014). The 2006 data represented a period of long-term drought which effectively ended in 2007 with average and above average subsequent rainfall. In 2007 and 2010 there were a series of extreme rainfall events. 137-Cesium and SOC concentrations were obtained from the sampled soils. Remote sensing using Landsat (30m) and MODIS (250m) NDVI was used to determine if catchment SOC could be predicted using both low and high resolution remote sensing. Relationships between SOC and 137-Cesium for both sampling periods were also quantified. Results indicate that, although moderate resolution (250 m) allows for reasonable prediction of the spatial distribution of SOC, the higher resolution (30 m) improved the strength of the SOC-NDVI relationship. Mean 137-Cesium concentrations were observed to show an increase in deposition at the sample sites over the 8 years between samplings. The relationship between SOC and 137-Cesium, as a surrogate for the erosion and deposition of SOC, suggested that sediment transport and deposition influences the distribution of SOC within the catchment. The increase in 137-Cesium also suggests that increased rainfall and extreme storm events, resulting from climate change, may increase

  5. The Research and Design for the Embedded System Based on ARM9%基于ARM9的嵌入式系统研究及设计

    Institute of Scientific and Technical Information of China (English)

    薛凌燕; 杨吉宏; 李凌云; 郑志新

    2009-01-01

    为适应嵌入式技术在现代工业及电子等更多领域的广泛应用,通过对ARM9嵌入式微处理器芯片S3C2410的研究,设计出基于S3C2410核心板的嵌入式系统开发底板,更多的需求及功能可在其底板上进行扩展与实现.首先对ARM9嵌入式微处理器S3C2410进行介绍,然后给出了基于S3C2410核心板的嵌入式系统开发底板的设计与功能扩展,包括开发板总体设计,电源模块设计,各种通信模块设计如串口、JTAG接口、网络接口、CAN总线通信接口等.该模板的设计实现了嵌入式系统在更多更广泛领域应用的灵活性.%To adapting for the embedded technology's application widely in the modern industry, electron and so on,it is the design for the embedded system exploitation motherboard based on S3C2410 core board through the research on ARM9 embedded microprocessor S3C2410. More demand and function can extend and come true on the motherboard. Firstly, introduce ARM9 embedded microprocessor S3C2410. Then introduce the design for the embedded system exploitation motherboard based on S3C2410 core board and the function extend, including exploitation motherboards' collectivity design, power supply design, all kinds of communication module design, such as serial interface, JTAG interface, network interface, CAN bus communication interface and so on. The motherboard's design has realized the embedded system application's flexibility.

  6. Comparison of the CALIPSO satellite and ground-based observations of cirrus clouds at the ARM TWP sites

    Energy Technology Data Exchange (ETDEWEB)

    Thorsen, Tyler J.; Fu, Q.; Comstock, Jennifer M.

    2011-11-10

    Statistics of ice cloud macrophysical and optical properties from the Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP) instrument on board the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite are compared with those from ground-based lidar observations over a 31 month period. Ground-based lidar observations are taken from the micropulse lidars (MPL) at the three Department of Energy Atmospheric Radiation Measurement (ARM) tropical western pacific (TWP) sites: Manus, Nauru and Darwin. CALIPSO observations show a larger cloud fraction at high altitudes while the ground-based MPLs show a larger cloud fraction at low altitudes. The difference in mean ice cloud top and base heights at the Manus and Nauru sites are all within 0.51 km, although differences are statistically significant. Mean ice cloud geometrical thickness agree to within 0.05 km at the Manus and Nauru sites. Larger differences exist at Darwin due to excessive degradation of the MPL output power during our sampling period. Both sets of observations show thicker clouds during the nighttime which may be real but could also be partially an artifact of the decreased signal-to-noise ratio during the daytime. The number of ice cloud layers per profile are also shown to be consistent after accounting for the difference in spatial resolution. For cloud optical depths, four different retrieval methods are compared, two for each set of observations. All products show that the majority of ice cloud optical depths ({approx}60%) fall below an optical depth of 0.2. For most comparisons all four retrievals agree to within the uncertainty intervals. We find that both CALIPSO retrievals agree best to ground-based optical depths when the lidar ratio in the latter is retrieved instead of set to a fixed value. Also thoroughly compared is the cloud properties for the subset of ice clouds which reside in the tropical tropopause layer (TTL).

  7. The effects of a home-based arm ergometry exercise programme on physical fitness, fatigue and activity in polio survivors: protocol for a randomised controlled trial

    Directory of Open Access Journals (Sweden)

    Murray Deirdre

    2012-12-01

    Full Text Available Abstract Background Many Polio survivors have reduced mobility, pain and fatigue, which make access to conventional forms of aerobic exercise difficult. Inactivity leads to increased risk of health problems, many of which are prevalent among Polio survivors. Aerobic exercise programmes in Polio survivors should utilise stable muscle groups and should be designed to minimise exacerbation of pain and fatigue. A home-based arm ergometry aerobic exercise programme may represent an affordable and accessible exercise modality, incorporating exercise prescription principles in this group. Methods/design This is a prospective, single blinded, randomised controlled trial. There are two arms; exercise intervention using arm ergometers and control. Polio survivors meeting eligibility criteria will be recruited and randomly allocated to intervention or control groups. Participants allocated to the intervention group will receive a small arm ergometer and a polar heart rate monitor. They will carry out a home-based moderate intensity (50-70% HRMax aerobic exercise programme for eight weeks, following instruction by the treating physiotherapist. Assessments will occur at baseline and after eight weeks and will include tests of physical fitness, activity, energy cost of walking, fatigue and quality of life. Clinically feasible assessment tools including the Six Minute Arm Test, the Physical Activity Scale for People with Physical Disabilities questionnaire, the Physiological Cost Index, Fatigue Severity Scale and the SF-36v2 will be utilised. Discussion The efficacy of a home-based arm ergometry programme in Polio survivors will be examined. No previous trial has examined such a programme using a wide range of outcome measures pertinent to Polio survivors. This study will provide new information on the impact of arm ergometry on physical fitness, activity, body composition, fatigue, pain, muscle strength, and health related quality of life. Also, the study

  8. ETHERBONE - a network layer for the wishbone SoC bus

    International Nuclear Information System (INIS)

    Today, there are several System on a Chip (SoC) bus systems. Typically, these buses are confined on-chip and rely on higher level components to communicate with the outside world. Taking these systems a step further, we see the possibility of extending the reach of the SoC bus to remote FPGAs or processors. This leads to the idea of the EtherBone (EB) core, which connects a Wishbone (WB) Ver. 4 Bus via a Gigabit Ethernet based network link to remote peripheral devices. EB acts as a transparent interconnect module towards attached WB Bus devices. Address information and data from one or more WB bus cycles is preceded with a descriptive header and encapsulated in a UDP/IP packet. Because of this standard compliance, EB is able to traverse Wide Area Networks and is therefore not bound to a geographic location. Due to the low level nature of the WB bus, EB provides a sound basis for remote hardware tools like a JTAG debugger, In-System-Programmer (ISP), boundary scan interface or logic analyser module. EB was developed in the scope of the White-Rabbit Timing Project (WR) at CERN and GSI/FAIR, which employs GigaBit Ethernet technology to communicate with memory mapped slave devices. WR will make use of EB as means to issue commands to its timing nodes and control connected accelerator hardware. (authors)

  9. EtherBone - A Network Layer for the Wishbone SoC Bus

    CERN Document Server

    Kreider, M; Lewis, J; Włostowski, T; Serrano, J

    2011-01-01

    Today, there are several System on a Chip (SoC) bus systems. Typically, these buses are confined on-chip and rely on higher level components to communicate with the outside world. Taking these systems a step further, we see the possibility of extending the reach of the SoC bus to remote FPGAs or processors. This leads to the idea of the EtherBone (EB) core, which connects a Wishbone (WB) Ver. 4 Bus via a Gigabit Ethernet based network link to remote peripheral devices. EB acts as a transparent interconnect module towards attached WB Bus devices. Address information and data from one or more WB bus cycles is preceded with a descriptive header and encapsulated in a UDP/IP packet. Because of this standard compliance, EB is able to traverse Wide Area Networks and is therefore not bound to a geographic location. Due to the low level nature of the WB bus, EB provides a sound basis for remote hardware tools like a JTAG debugger, In-System-Programmer (ISP), boundary scan interface or logic analyser module. EB was de...

  10. Multi Resolution AHB Bus Tracer with Real Time Compression for SOC

    Directory of Open Access Journals (Sweden)

    J. Jagadish Reddy

    2013-01-01

    Full Text Available AMBA (Advanced Microcontroller based Bus Architecture consists of AHB, APB, ASB and AXI. In this project we are Tracing AHB (Advanced High performance Bus signals with Real time Compression and Multi-resolution Techniques. A simple transaction on the AHB consists of an address phase and a subsequent data phase. Access to the target device is controlled through a MUX , thereby admitting bus-access to one bus-master at a time. In AHB Tracer we have to Trace Address signals, Data signals and Control signals, we have to compress them depending on AHB protocols. A multi-resolution AHB on-chip bus tracer is named as SYS_HMRBT (AHB Multi-resolution Bus Tracer and is used for monitoring. The goal is to provide better compression quality and multiple resolution traces to meet the complex SoC debugging needs. Compressing all signals at cycle-accurate-level does not always meet the debugging needs. As SOCs become more complex, the transaction level debugging becomes increasingly important, since it helps designers focus on the functional behaviors, instead of interpreting complex signals. By using this SYS_HMRBT, we can achieve 79%-96% of compression depending on selected resolution mode. Tools Used for this Project are Modelsim for Simulation, and Xilinx ISE II for Synthesis

  11. Evaluation of Arm Processor-based Bionic Intelligent Controller for a Buck-boost Converte

    Directory of Open Access Journals (Sweden)

    M.V. Mini

    2015-07-01

    Full Text Available This study focuses on performance-comparison of different tuning methods for a PI controller applied to a buck-boost converter. Comparison between the controllers is made by analysis of design methodology implementation issues and empirically measured performance. Design of PI controller is based on frequency response of the converter. The optimization of PI controller is based on ant colony algorithm. Experimental results show that, tuning the PI controller using ACO algorithm gave better performance than the conventional algorithm. This is mainly due to the fact ACO is capable of reducing the overshoot without oscillation.

  12. Impacts of SOC on car-following behavior and travel time in the heterogeneous traffic system

    Science.gov (United States)

    Tang, Tie-Qiao; Xu, Ke-Wei; Yang, Shi-Chun; Ding, Chuan

    2016-01-01

    Since the SOC (state of charge) of the battery of each electric vehicle directly determines whether the battery should be charged/swapped, the SOC may affect the electric vehicle's driving behavior. In this paper, we introduce the SOC of battery into the electric vehicle's driving behavior model and propose a car-following model for electric vehicles, and then use the proposed model to study the effects of the SOC of battery and battery swap on each vehicle's driving behavior in the heterogeneous traffic system consisting of traditional vehicles and electric vehicles. The numerical results show that the proposed model can reproduce some complex traffic phenomena resulted by the SOC of battery and battery swap and that the influences on each vehicle's driving behavior are directly related to the initial traffic state, the electric vehicle's proportion, and the SOC of battery.

  13. Deletion of skeletal muscle SOCS3 prevents insulin resistance in obesity

    DEFF Research Database (Denmark)

    Beck Jørgensen, Sebastian; O'Neill, Hayley M; Sylow, Lykke;

    2013-01-01

    signal transduction in adipose tissue and the liver. Skeletal muscle is an important tissue for controlling energy expenditure and whole-body insulin sensitivity; however, the physiological importance of SOCS3 in this tissue has not been examined. Therefore, we generated mice that had SOCS3 specifically...... deleted in skeletal muscle (SOCS MKO). The SOCS3 MKO mice had normal muscle development, body mass, adiposity, appetite, and energy expenditure compared with wild-type (WT) littermates. Despite similar degrees of obesity when fed a high-fat diet, SOCS3 MKO mice were protected against the development...... of hyperinsulinemia and insulin resistance because of enhanced skeletal muscle insulin receptor substrate 1 (IRS1) and Akt phosphorylation that resulted in increased skeletal muscle glucose uptake. These data indicate that skeletal muscle SOCS3 does not play a critical role in regulating muscle development or energy...

  14. Variance-based iterative image reconstruction from few views in limited-angle C-arm computed tomography

    Science.gov (United States)

    El Hakimi, Wissam; Sakas, Georgios

    2014-03-01

    C-arm cone-beam computed tomography offers CT-like 3D imaging capabilities, but with the additional advantage of being appropriate for interventional suites. Due to the limitations of the data acquisition system, projections are oft acquired in a short scan angular range, resulting in significant artifacts, if conventional analytic formulas are applied. Furthermore, the presence of high-density objects, like metal parts, induces streak-like artifacts, which can obscure relevant anatomy. We present a new algorithm to reduce such artifacts and enhance the quality of reconstructed 3D volume. We make use of the variance of estimated voxel values over all projections to decrease the ground artifact level. The proposed algorithm is less sensitive to data truncation, and does not require explicit estimation of missing data. The number of required images is very low (up to 56 projections), which have several benefits, like significant reduction of patient dose and shortening of the acquisition time. The performance of the proposed method is demonstrated based on simulations and phantom data.

  15. Dynamics Modeling and Robust Trajectory Tracking Control for a Class of Hybrid Humanoid Arm Based on Neural Network

    Institute of Scientific and Technical Information of China (English)

    WANG Yueling; JIN Zhenlin

    2009-01-01

    In order to solve the problem of trajectory tracking for a class of novel serial-parallel hybrid humanoid arm(HHA), which has parameters uncertainty, frictions, disturbance, abrasion and pulse forces derived from motors, a multistep dynamics modeling strategy is proposed and a robust controller based on neural network(NN)-adaptive algorithm is designed. At the first step of dynamics modeling, the dynamics model of the reduced HHA is established by Lagrange method. At the second step of dynamics modeling, the parameter uncertain part resulting mainly from the idealization of the HHA is learned by adaptive algorithm. In the trajectory tracking controller, the radial basis function(RBF) NN, whose optimal weights are learned online by adaptive algorithm, is used to learn the upper limit function of the total uncertainties including frictions, disturbances, abrasion and pulse forces. To a great extent, the conservatism of this robust trajectory tracking controller is reduced, and by this controller the HHA can impersonate mostly human actions. The proof and simulation results testify the validity of the adaptive strategy for parameter learning and the neural network-adaptive strategy for the trajectory tracking control.

  16. Authentication System for Smart Homes Based on ARM7TDMI-S and IRIS-Fingerprint Recognition Technologies

    Directory of Open Access Journals (Sweden)

    Fredrick R. Ishengoma

    2014-12-01

    Full Text Available With the rapid advancement in technology, smart homes have become applicable and so the need arise to solve the security challenges that are accompanied with its operation. Passwords and identity cards have been used as traditional authentication mechanisms in home environments, however, the rise of misuse of these mechanisms are proving them to be less reliable. For instance, ID cards can be misplaced, copied or counterfeited and being misused. Conversely, studies have shown that biometrics authentication systems particularly Iris Recognition Technology (IRT and Fingerprint Recognition Technology (FRT have the most reliable mechanisms to date providing tremendous accuracy and speed. As the technology becomes less expensive, application of IRT& FRT in smart-homes becomes more reliable and appropriate solution for security challenges. In this paper, we present our approach to design an authentication system for smart homes based on IRT, FRT and ARM7TDMI-S.The system employs two biometrics mechanisms for high reliability whereby initially, system users must enroll their fingerprints and eyes into the camera. Iris and fingerprint biometrics are scanned and the images are stored in the database. In the stage of authentication, FRT and IRT fingerprint scan and analyze points of the user's current input iris and fingerprint and match with the database contents. If one or more captured images do not match with the one in the database, then the system will not give authorization.

  17. Design and development of C-arm based cone-beam CT for image-guided interventions: initial results

    Science.gov (United States)

    Chen, Guang-Hong; Zambelli, Joseph; Nett, Brian E.; Supanich, Mark; Riddell, Cyril; Belanger, Barry; Mistretta, Charles A.

    2006-03-01

    X-ray cone-beam computed tomography (CBCT) is of importance in image-guided intervention (IGI) and image-guided radiation therapy (IGRT). In this paper, we present a cone-beam CT data acquisition system using a GE INNOVA 4100 (GE Healthcare Technologies, Waukesha, Wisconsin) clinical system. This new cone-beam data acquisition mode was developed for research purposes without interfering with any clinical function of the system. It provides us a basic imaging pipeline for more advanced cone-beam data acquisition methods. It also provides us a platform to study and overcome the limiting factors such as cone-beam artifacts and limiting low contrast resolution in current C-arm based cone-beam CT systems. A geometrical calibration method was developed to experimentally determine parameters of the scanning geometry to correct the image reconstruction for geometric non-idealities. Extensive phantom studies and some small animal studies have been conducted to evaluate the performance of our cone-beam CT data acquisition system.

  18. Balance maintenance in high-speed motion of humanoid robot arm-based on the 6D constraints of momentum change rate.

    Science.gov (United States)

    Zhang, Da-song; Xiong, Rong; Wu, Jun; Chu, Jian

    2014-01-01

    Based on the 6D constraints of momentum change rate (CMCR), this paper puts forward a real-time and full balance maintenance method for the humanoid robot during high-speed movement of its 7-DOF arm. First, the total momentum formula for the robot's two arms is given and the momentum change rate is defined by the time derivative of the total momentum. The author also illustrates the idea of full balance maintenance and analyzes the physical meaning of 6D CMCR and its fundamental relation to full balance maintenance. Moreover, discretization and optimization solution of CMCR has been provided with the motion constraint of the auxiliary arm's joint, and the solving algorithm is optimized. The simulation results have shown the validity and generality of the proposed method on the full balance maintenance in the 6 DOFs of the robot body under 6D CMCR. This method ensures 6D dynamics balance performance and increases abundant ZMP stability margin. The resulting motion of the auxiliary arm has large abundance in joint space, and the angular velocity and the angular acceleration of these joints lie within the predefined limits. The proposed algorithm also has good real-time performance. PMID:24883404

  19. Accuracy of x-ray image-based 3D localization from two C-arm views: a comparison between an ideal system and a real device

    Science.gov (United States)

    Brost, Alexander; Strobel, Norbert; Yatziv, Liron; Gilson, Wesley; Meyer, Bernhard; Hornegger, Joachim; Lewin, Jonathan; Wacker, Frank

    2009-02-01

    arm X-ray imaging devices are commonly used for minimally invasive cardiovascular or other interventional procedures. Calibrated state-of-the-art systems can, however, not only be used for 2D imaging but also for three-dimensional reconstruction either using tomographic techniques or even stereotactic approaches. To evaluate the accuracy of X-ray object localization from two views, a simulation study assuming an ideal imaging geometry was carried out first. This was backed up with a phantom experiment involving a real C-arm angiography system. Both studies were based on a phantom comprising five point objects. These point objects were projected onto a flat-panel detector under different C-arm view positions. The resulting 2D positions were perturbed by adding Gaussian noise to simulate 2D point localization errors. In the next step, 3D point positions were triangulated from two views. A 3D error was computed by taking differences between the reconstructed 3D positions using the perturbed 2D positions and the initial 3D positions of the five points. This experiment was repeated for various C-arm angulations involving angular differences ranging from 15° to 165°. The smallest 3D reconstruction error was achieved, as expected, by views that were 90° degrees apart. In this case, the simulation study yielded a 3D error of 0.82 mm +/- 0.24 mm (mean +/- standard deviation) for 2D noise with a standard deviation of 1.232 mm (4 detector pixels). The experimental result for this view configuration obtained on an AXIOM Artis C-arm (Siemens AG, Healthcare Sector, Forchheim, Germany) system was 0.98 mm +/- 0.29 mm, respectively. These results show that state-of-the-art C-arm systems can localize instruments with millimeter accuracy, and that they can accomplish this almost as well as an idealized theoretical counterpart. High stereotactic localization accuracy, good patient access, and CT-like 3D imaging capabilities render state-of-the-art C-arm systems ideal devices for X

  20. Sense of Coherence and Physical Health. A “Copenhagen Interpretation” of Antonovsky's SOC Concept

    OpenAIRE

    P. Christian Endler; Haug, Thomas M.; Heinz Spranger

    2008-01-01

    According to Antonovsky's (Aaron Antonovsky, 1923–1994) sense of coherence (SOC) model, persons with a high SOC have the ability to benefit from their general defense mechanisms in order to overcome stressful situations. In a health-disease continuum, this leads to the development towards health. However, Antonovsky's global hypothesis that the strength of the SOC may influence the physical health status of a person could not be proven.Flensborg-Madsen et al. from Copenhagen were able to prov...

  1. Sense of Coherence and Physical Health. A “Copenhagen Interpretation” of Antonovsky's SOC Concept

    Directory of Open Access Journals (Sweden)

    P. Christian Endler

    2008-01-01

    Full Text Available According to Antonovsky's (Aaron Antonovsky, 1923–1994 sense of coherence (SOC model, persons with a high SOC have the ability to benefit from their general defense mechanisms in order to overcome stressful situations. In a health-disease continuum, this leads to the development towards health. However, Antonovsky's global hypothesis that the strength of the SOC may influence the physical health status of a person could not be proven.

  2. Upregulation of miR-572 transcriptionally suppresses SOCS1 and p21 and contributes to human ovarian cancer progression

    OpenAIRE

    Zhang, Xin; Liu, Junling; Zang, Dan; Wu, Shu; Liu, Aibin; Zhu, Jinrong; Wu, Geyan; Li, Jun; Jiang, Lili

    2015-01-01

    Ovarian cancer is a gynecological malignancy with high mortality rates worldwide and novel diagnostic and prognostic markers and therapeutic targets are urgently required. The suppressor of cytokine signaling 1 (SOCS1) and cyclin-dependent kinase inhibitor 1A (p21KIP) are known to regulate tumor cell proliferation. However, the mechanisms that regulate these genes have not yet been completely elucidated. In the present study, analysis of a published microarray-based high-throughput assessment...

  3. Electromagnetic field-based navigation for percutaneous punctures on C-arm CT: experimental evaluation and clinical application

    Energy Technology Data Exchange (ETDEWEB)

    Meyer, Bernhard C.; Peter, Olaf; Frericks, Bernd B.; Wolf, Karl-Juergen [Charite - University Hospital, Campus Benjamin Franklin, Department of Radiology and Nuclear Medicine, Berlin (Germany); Nagel, Markus [CAS innovations AG, Erlangen (Germany); Hoheisel, Martin [Siemens Healthcare, Forchheim (Germany); Wacker, Frank K. [Charite - University Hospital, Campus Benjamin Franklin, Department of Radiology and Nuclear Medicine, Berlin (Germany); The Johns Hopkins Hospital, Radiology Department, Division of Vascular and Interventional Radiology, Baltimore, MD (United States)

    2008-12-15

    The aim of this study was to prospectively evaluate the needle visualization and placement error and use of an electromagnetic field-based tracking navigation device for puncture procedures based on C-arm CT (CACT) images. A commercially available navigation device was mounted on an angiographic X-ray system setup for CACT. After the target was defined, needle placement was performed under real-time visualization of the virtual needle in CACT images. The final, real needle position was assessed by CACT. Punctures were performed in phantoms (n = 76) and in twelve patients (eight biopsies, three drainages, one injection). Procedure times, system error, user error and total error were assessed. In phantoms, mean total error was 2.3 {+-} 0.9 mm, user error was 1.4 {+-} 0.8 mm and system error was 1.7 {+-} 0.8 mm. In the patient study, the targeted puncture was successful in all twelve cases. The mean total error was 5.4 mm {+-} 1.9 mm (maximum 8.1 mm), user error was 3.7 {+-} 1.7 mm, system error was 3.2 {+-} 1.4 mm and mean skin-to-target time was less than 1 min. The navigation device relying on CACT was accurate in terms of needle visualization and useful for needle placement under both experimental and clinical conditions. For more complex procedures, electromagnetic field-based tracking guidance might be of help in facilitating the puncture and reducing both the puncture risk and procedure time. (orig.)

  4. ARM-LINUX BASED GUI SYSTEM ARCHITECTURE ANALYSIS AND ITS APPLICATION DESIGN%基于ARM-Linux的GUI系统体系分析及其应用设计

    Institute of Scientific and Technical Information of China (English)

    杜智敏; 谢维波; 谢毅勇

    2011-01-01

    To realize a well performing embedded GUI system, it is required that the developers clearly understand not only the operation system with all its low level hardware components, but also their interactions. The thesis illustrates GUI' s core design concept, additionally carries out exhaustive analysis and discussion upon ARM-Linux based GUI implementation and architecture, then finally proposes MiniGUI-baaed concrete application design, which bears instructive meanings for researchers to develop the embedded GUI system.%实现一个表现良好的嵌入式GUI系统要求开发者对操作系统及底层硬件的各个组件及其之间的交互都十分清楚.阐述GUI的核心设计理念,并对基于ARM-Linux的GUI的实现原理和体系结构进行了详尽的分析探讨,最后给出基于MiniGUI的具体应用设计,对研究人员开发嵌入式GUI系统具有指导意义.

  5. Terminal Hardware Design of Police Based on ARM Cortex-A8 Platform%基于ARM Cortex-A8平台的警务终端硬件设计

    Institute of Scientific and Technical Information of China (English)

    庹云凤; 江先阳

    2011-01-01

    基于ARM Cortex-A8平台研究设计的警务终端,利用当前热门的嵌入式技术与3G无线通信技术,帮助交通警察及公安警察进行交通管理及犯罪活动的打击。警务终端的主要功能包括3G手机功能、电子地图功能、高清拍照功能、驾照及其他二维条码证件扫描验证功能、二代身份证验证功能、IC卡识别功能、银联无线支付功能等。%Based on ARM Cortex-A8 platform,designed to police the terminal study, the use of current technology and popular embedded 3G wireless communications technology to help police and public security traffic management and traffic police crack down on criminal activities.The main function of the police end features including 3G mobile phones,electronic map function,high-definition camera,driver's license and other two-dimensional bar code scanning documents,authentication features,the second generation ID card authentication,IC card recognition, CUP wireless payment functions.

  6. 基于ARM-WindowsCE的便携式漏磁检测仪设计%Design of Portable Magnetic Flux Leakage Testing Instrument Based on ARM-WindowsCE

    Institute of Scientific and Technical Information of China (English)

    于卫刚; 苑希超; 徐超; 王长龙; 王鹏

    2011-01-01

    In order to analyze the relationship between the magnetic flux leakage signals and the types of defect, a portable magnetic flux leakage testing instrument was designed. This paper presents the structure of this magnetic flux leakage testing instrument based on ARM9 embedded configuration. With the S3C2440A processor as the core and WindowCE5. 0 as the operating system and by using HONEYWELL company's magnetism sensor HMC1021 to obtain magnetic flux leakage signals on the surface of ferromagnetic material,the instrument can fulfill the basic function of the magnetic flux leakage testing instrument in a better way.%为了分析漏磁信号和缺陷类型之间存在的对应关系,研制了一种适合现场检测的便携式漏磁检测仪.给出基于ARM9嵌入式结构的漏磁检测仪总体结构,该检测仪以S3C2440A处理器为核心,采用WindowsCE5.0为操作系统,以HONEYWELL公司的HMC1021磁阻传感器来获取铁磁材料表面的漏磁信号,较好地实现了漏磁检测仪的基本功能.

  7. Automatic Control System for Refining Sugarcane Based on Embedded ARM-Linux and ZigBee%基于ARM-Linux和ZigBee的自动煮糖数据采集系统

    Institute of Scientific and Technical Information of China (English)

    王敦锋; 朱名日; 庾志衡; 周信东

    2011-01-01

    According to the special environment of refining; sugarcane production line,a RT data sugar-refine control platform of wireless sensor network based on Zigbee and arm-linux technology was built. The problems of traditional cable data acquisition system such as high cost.poor scalabiliiy of monitoring node,bad mobility were solved. A new way was achieved for the process automation of refinining sugar. The test result shows that the system runs well, and completely meets the requirements of produccion process.%针对糖厂煮糖制炼生产线的特殊环境,利用ZigBee和嵌入式ARM-Linux技术,构建了1个实时的蔗糖制炼无线传感器网络控制平台,有效解决传统的有线数据采集系统存在的成本较高、监控点扩充性差、移动性较差等问题,为实现煮糖过程的自动化提供了手段.测试表明,系统运行良好,能够满足工艺的要求.

  8. ARM Lead Mentor Selection Process

    Energy Technology Data Exchange (ETDEWEB)

    Sisterson, DL

    2013-03-13

    The ARM Climate Research Facility currently operates more than 300 instrument systems that provide ground-based observations of the atmospheric column. To keep ARM at the forefront of climate observations, the ARM infrastructure depends heavily on instrument scientists and engineers, also known as Instrument Mentors. Instrument Mentors must have an excellent understanding of in situ and remote-sensing instrumentation theory and operation and have comprehensive knowledge of critical scale-dependent atmospheric processes. They also possess the technical and analytical skills to develop new data retrievals that provide innovative approaches for creating research-quality data sets.

  9. Favorable prognostic value of SOCS2 and IGF-I in breast cancer

    International Nuclear Information System (INIS)

    Suppressor of cytokine signaling (SOCS) proteins comprise a protein family, which has initially been described as STAT induced inhibitors of the Jak/Stat pathway. Recent in vivo and in vitro studies suggest that SOCS proteins are also implicated in cancer. The STAT5 induced IGF-I acts as an endocrine and para/autocrine growth and differentiation factor in mammary gland development. Whereas high levels of circulating IGF-I have been associated with increased cancer risk, the role of autocrine acting IGF-I is less clear. The present study is aimed to elucidate the clinicopathological features associated with SOCS1, SOCS2, SOCS3, CIS and IGF-I expression in breast cancer. We determined the mRNA expression levels of SOCS1, SOCS2, SOCS3, CIS and IGF-I in 89 primary breast cancers by reverse transcriptase PCR. SOCS2 protein expression was further evaluated by immuno-blot and immunohistochemistry. SOCS2 expression inversely correlated with histopathological grade and ER positive tumors exhibited higher SOCS2 levels. Patients with high SOCS2 expression lived significantly longer (108.7 vs. 77.7 months; P = 0.015) and high SOCS2 expression proved to be an independent predictor for good prognosis (HR = 0.45, 95% CI 0.23 – 0.91, P = 0.026). In analogy to SOCS2, high IGF-I expression was an independent predictor for good prognosis in the entire patient cohort. In the subgroup of patients with lymph-node negative disease, high IGF-I was a strong predictor for favorable outcome in terms of overall survival and relapse free survival (HR = 0.075, 95% CI 0.014 – 0.388, P = 0.002). This is the first report on the favorable prognostic value of high SOCS2 expression in primary mammary carcinomas. Furthermore a strong association of high IGF-I expression levels with good prognosis was observed especially in lymph-node negative patients. Our results suggest that high expression of the STAT5 target genes SOCS2 and IGF-I is a feature of differentiated and less malignant tumors

  10. Dendritic Cells Transduced with SOCS1 Gene Exhibit Regulatory DC Properties and Prolong Allograft Survival

    Institute of Scientific and Technical Information of China (English)

    Hong Fu; Shaohua Song; Fang Liu; Zhijia Ni; Yi Tang; Xiaoyun Shen; Liang Xiao; Guoshan Ding; Quanxing Wang

    2009-01-01

    SOCS1 is a key regulator of cytokine signaling and is important for maintaining balance in the immune system. It is thought to participate in negative feedback loops in cytokine signaling and may be an important signal for the regulation of dendritic cell (DC) maturation. However, it remains unclear whether DCs transduced with SOCS1 exhibit characteristics of regulatory DCs and induce allogeneic T-cell hyporesponsiveness. In this study, we constructed adenoviral vector coding SOCS1 (Ad-SOCS1) that can efficiently increase SOCS1 gene expression in bone marrow-derived dendritic cells. DCs transduced with Ad-SOCS1 (DC-SOCS1) expressed low levels of costimulatory and MHC molecules, were resistant to maturation and activation stimulation, induced allogeneic T-cell hyporesponsiveness, and promoted the generation of regulatory-like T cells in vitro. DC-SOCS1 pretreatment significantly prolonged the survival of allografts and led to a substantial increase in the generation of regulatory T cells. Our data suggest that SOCS1 inhibits DC maturation and induces regulatory DC generation, therefore possessing therapeutic potential to prevent rejection in organ transplantation. Cellular & Molecular Immunology.

  11. What are the effects of agricultural management on soil organic carbon (SOC) stocks?

    DEFF Research Database (Denmark)

    Söderström, Bo; Hedlund, Katarina; Jackson, Louise E.;

    2014-01-01

    the physical and biological properties of the soil. Intensification of agriculture and land-use change from grasslands to croplands are generally known to deplete SOC stocks. The depletion is exacerbated through agricultural practices with low return of organic material and various mechanisms......Changes in soil organic carbon (SOC) stocks significantly influence the atmospheric C concentration. Agricultural management practices that increase SOC stocks thus may have profound effects on climate mitigation. Additional benefits include higher soil fertility since increased SOC stocks improve...... not only nationally in Sweden, but also internationally, for promoting long-term sustainable management of soils and mitigating climate change....

  12. Overexpression of SOCS3 exhibits preclinical antitumor activity against malignant pleural mesothelioma.

    Science.gov (United States)

    Iwahori, Kota; Serada, Satoshi; Fujimoto, Minoru; Nomura, Shintaro; Osaki, Tadashi; Lee, Chun Man; Mizuguchi, Hiroyuki; Takahashi, Tsuyoshi; Ripley, Barry; Okumura, Meinoshin; Kawase, Ichiro; Kishimoto, Tadamitsu; Naka, Tetsuji

    2011-08-15

    Malignant pleural mesothelioma (MPM) is an aggressive tumor with poor prognosis for which an effective therapy remains to be established. Our study investigated the therapeutic potential of the suppressor of cytokine signaling 3 (SOCS3), an endogenous inhibitor of intracellular signaling pathways, for treatment of MPM. We infected MPM cells (H226, EHMES-1, MESO-1 and MESO-4) with an adenovirus-expressing SOCS3 (AdSOCS3) to examine the effect of SOCS3 overexpression on MPM cells. SOCS3 overexpression reduced MPM proliferation and induced apoptosis and partial G0/G1 arrest. SOCS3 also inhibited the proliferation of MPM cells via multiple signaling pathways including Janus kinase (JAK)/signal transducer and activator of transcription 3 (STAT3), extracellular signal-regulated kinase (ERK), focal adhesion kinase (FAK) and p53 pathways. Notably, AdSOCS3 treatment inhibited tumor growth in an MPM pleural xenograft model. These findings demonstrate that overexpression of SOCS3 has a potent antitumor effect against MPM both in vitro and in vivo and indicate the potential for clinical use of SOCS3 for MPM treatment. PMID:20949562

  13. Expression of SOCS-1 in the liver tissues of chronic hepatitis B and its clinical significance

    Institute of Scientific and Technical Information of China (English)

    Zhi-Xin Zhao; Qing-Xian Cai; Xiao-Mou Peng; Yu-Tian Chong; Zhi-Liang Gao

    2008-01-01

    AIM: To study the expression of suppressor of cytokine signaling-1 (SOCS-1) in the liver tissues of chronic hepatitis B (CHB) and the clinical significance of this expression.METHODS: The expression of SOCS-1 in liver tissues of 45 cases of CHB was investigated by immunohistochemical staining, and its correlations with inflammation grades and fibrosis stage were analyzed by SPSS statistics software.RESULTS: The result showed SOCS-1 expressing could be observed in the liver tissue of CHB. The expression of SOCS-1 was mainly distributed near the portal area in the liver tissue of mild inflammation CHB group, and was diffusely distributed in the liver tissue of moderate and severe inflammation groups. SOCS-1 positive stains mainly appear in the hepatocytes, only a few of liver interstitial cells were involved. Inside the hepatocyte, SOCS-1 positive stains are mainly distributed in the plasma. Some of the staining was observed on the membrane. The inclusion bodies in the plasma of hepatocytes were observed occasionally. There were both obvious correlations between the expression of SOCS-1 and the inflammatory grade, and that between the expression of SOCS-1 and the fibrosis stage.CONCLUSION: The distribution of SOCS-1 in the liver tissue of CHB is variable. This expression was correlated with the inflammation grade and fibrosis stage.

  14. Promotion of Erythropoietic Differentiation in Hematopoietic Stem Cells by SOCS3 Knock-Down.

    Directory of Open Access Journals (Sweden)

    Yu-xiao Liu

    Full Text Available Suppressor of cytokine signaling 3 (SOCS3 plays an important role in mice fetal liver erythropoiesis, but the roles of SOCS3 in human hematopoietic stem cells (HSCs have not been well investigated. In the present study, lentiviral small interference RNA expression vectors (shRNA of SOCS3 were constructed and stably transferred into HSCs. We found that SOCS3 knockdown induced erythroid expansion in HSCs. Conversely, Ectopic expression of SOCS3 in progenitor cells blocked erythroid expansion and erythroid colony formation of HSCs. To further explore the involved mechanism, we compared gene expression profiles of SOCS3-shRNA tranduced HSCs with that of control HSCs by whole genome microarrays. The results indicated that cell developmental process related genes, especially hematopoietic lineage-specific genes, associated with the responses to SOCS3 in HSCs.Downexpression of SOCS3 in HSCs or differentiated erythroid progenitor cells induced a transcriptional program enriched for erythroid development relative genes. Our results proved that SOCS3 down-expression induced lineage commitment towards erythroid progenitor cell fate by activation of erythroid-specific gene in HSCs and provided new insight into the mechanism of erythropoietic development.

  15. Favorable prognostic value of SOCS2 and IGF-I in breast cancer

    Directory of Open Access Journals (Sweden)

    Daxenbichler Günter

    2007-07-01

    Full Text Available Abstract Background Suppressor of cytokine signaling (SOCS proteins comprise a protein family, which has initially been described as STAT induced inhibitors of the Jak/Stat pathway. Recent in vivo and in vitro studies suggest that SOCS proteins are also implicated in cancer. The STAT5 induced IGF-I acts as an endocrine and para/autocrine growth and differentiation factor in mammary gland development. Whereas high levels of circulating IGF-I have been associated with increased cancer risk, the role of autocrine acting IGF-I is less clear. The present study is aimed to elucidate the clinicopathological features associated with SOCS1, SOCS2, SOCS3, CIS and IGF-I expression in breast cancer. Methods We determined the mRNA expression levels of SOCS1, SOCS2, SOCS3, CIS and IGF-I in 89 primary breast cancers by reverse transcriptase PCR. SOCS2 protein expression was further evaluated by immuno-blot and immunohistochemistry. Results SOCS2 expression inversely correlated with histopathological grade and ER positive tumors exhibited higher SOCS2 levels. Patients with high SOCS2 expression lived significantly longer (108.7 vs. 77.7 months; P = 0.015 and high SOCS2 expression proved to be an independent predictor for good prognosis (HR = 0.45, 95% CI 0.23 – 0.91, P = 0.026. In analogy to SOCS2, high IGF-I expression was an independent predictor for good prognosis in the entire patient cohort. In the subgroup of patients with lymph-node negative disease, high IGF-I was a strong predictor for favorable outcome in terms of overall survival and relapse free survival (HR = 0.075, 95% CI 0.014 – 0.388, P = 0.002. Conclusion This is the first report on the favorable prognostic value of high SOCS2 expression in primary mammary carcinomas. Furthermore a strong association of high IGF-I expression levels with good prognosis was observed especially in lymph-node negative patients. Our results suggest that high expression of the STAT5 target genes SOCS2 and IGF

  16. A Call to Arms: Standards for Agent-Based Modeling and Simulation

    OpenAIRE

    Andrew Collins; Mikel Petty; Daniele Vernon-Bido; Solomon Sherfey

    2015-01-01

    Standards are as old as civilization itself and they are vital to human development. Standards touch almost every part of our lives, from the water we drink to the language used to write this article. A sign of a good standard is one that we do not notice. Good standards exist and so do processes and organizations to create and maintain them. As agent-based modeling and simulation matures as a methodology, a discussion of standards applicable to it becomes increasingly important. Descriptive ...

  17. Parametric motion control of robotic arms: A biologically based approach using neural networks

    Science.gov (United States)

    Bock, O.; D'Eleuterio, G. M. T.; Lipitkas, J.; Grodski, J. J.

    1993-01-01

    A neural network based system is presented which is able to generate point-to-point movements of robotic manipulators. The foundation of this approach is the use of prototypical control torque signals which are defined by a set of parameters. The parameter set is used for scaling and shaping of these prototypical torque signals to effect a desired outcome of the system. This approach is based on neurophysiological findings that the central nervous system stores generalized cognitive representations of movements called synergies, schemas, or motor programs. It has been proposed that these motor programs may be stored as torque-time functions in central pattern generators which can be scaled with appropriate time and magnitude parameters. The central pattern generators use these parameters to generate stereotypical torque-time profiles, which are then sent to the joint actuators. Hence, only a small number of parameters need to be determined for each point-to-point movement instead of the entire torque-time trajectory. This same principle is implemented for controlling the joint torques of robotic manipulators where a neural network is used to identify the relationship between the task requirements and the torque parameters. Movements are specified by the initial robot position in joint coordinates and the desired final end-effector position in Cartesian coordinates. This information is provided to the neural network which calculates six torque parameters for a two-link system. The prototypical torque profiles (one per joint) are then scaled by those parameters. After appropriate training of the network, our parametric control design allowed the reproduction of a trained set of movements with relatively high accuracy, and the production of previously untrained movements with comparable accuracy. We conclude that our approach was successful in discriminating between trained movements and in generalizing to untrained movements.

  18. Multiuser Test System Based on FPGA and ARM%基于FPGA和ARM的多用户测试系统

    Institute of Scientific and Technical Information of China (English)

    张文亭; 张曙光; 乔庐峰; 陈庆华

    2011-01-01

    Because of the characteristics of small volume, low power, low cost and flexible design that the system has, the design and implementation of multiuser test system based on Field Programmable Gate Array(FPGA) and Advanced RISC Machines(ARM) is introduced in this paper. It can satisfy the specific needs of Asynchronous Transfer Mode(ATM) lest. Because of the console based on Web users as long as access this network can operation the test system, which solves the problem of people can not test on the same time because it is expensive. With the characteristics of small volume, low power, low cost and flexible design that the system can satisfy the specific needs of high speed ATM test. Test show it can satisfy the need of high-speed transmission and exchange equipment.%针对现有异步转移模式测试仪器通用性弱、成本高等局限性,设计基于现场可编程门列阵和嵌入式ARM的多用户测试系统.采用基于Web的监控台,使得用户只要接入网络就能通过Web页面对待测设备进行测试,从而解决专用测试仪表不能多地多人同时测试的问题.测试结果表明,该设计具有体积小、成本低、设计灵括等特点,可以满足专用高速传输和交换设备的测试需求.

  19. Self-assembled targeted nanoparticles based on transferrin-modified eight-arm-polyethylene glycol–dihydroartemisinin conjugate

    Science.gov (United States)

    Liu, Kefeng; Dai, Lin; Li, Chunxiao; Liu, Jing; Wang, Luying; Lei, Jiandu

    2016-07-01

    Poor delivery of insoluble anticancer drugs has so far precluded their clinical application. In this study, an efficient tumor targeted-nanoparticle delivery system, transferrin-eight-arm-polyethylene glycol–dihydroartemisinin nanoparticles (TF-8arm-PEG-DHA NPs) for the vehiculation of dihydroartemisinin (DHA) was first prepared and evaluated for its targeting efficiency and cytotoxicity in vitro and in vivo to Lewis lung carcinoma (LLC) cells, which overexpress transferrin receptors (TFRs). The synthesized TF-8arm-PEG–DHA NPs had high solubility (~102 fold of free DHA), relatively high drug loading (~10 wt% DHA), long circulating half-life and moderate particle size (~147 nm). The in vitro cytotoxicity and in vivo tumor growth inhibition studies in LLC-tumor bearing mice confirmed the enhanced efficacy of TF-modified 8arm-PEG-DHA NPs compared to free DHA and non-modified 8arm-PEG-DHA NPs. All these results together supported that the formulation developed in this work exhibited great potential as an effective tumor targeting delivery system for insoluble anticancer drugs.

  20. ARM Based Automatic Control System of Nano Positioning Stage for Micromanufacturing

    Directory of Open Access Journals (Sweden)

    Gaurav Singh Naruka

    2013-05-01

    Full Text Available A microcontroller based control system to drive the Physik Instrumente (PI piezoelectric ultrasonic nano-positioning (PUN sta ge for a micro-factory has been proposed by the author. The tuning parameters of th e PI Line Controller are chosen such that the PUN stage shows optimum step response . The microcontroller i.e. LPC2478R provides the user with the choices of oper ations on the 3.2” QVGA LCD screen and the choice can be made by a 5-key joysti ck. The PUN stage moves in different geometrical patterns as chosen by the use r. The stage is placed in the workspace of the Clark-MXRR,Inc. CPA-2101 femto-sec ond laser. Different patterns are made on the material in question. As compared t o the previous works in this area, the user is given the power for position control, r eal time tracking, and trajectory planning of the actuator. The user interface has be en made very easy to comprehend. The repeatability of tasks, portability of the as- sembly, the reduction in the size of the system , power consumption and the human involvemen t are the major achievements after the inclusion of a microcontroller

  1. Optimizing Dendritic Cell-Based Immunotherapy: Tackling the Complexity of Different Arms of the Immune System

    Directory of Open Access Journals (Sweden)

    Ilse Van Brussel

    2012-01-01

    Full Text Available Earlier investigations have revealed a surprising complexity and variety in the range of interaction between cells of the innate and adaptive immune system. Our understanding of the specialized roles of dendritic cell (DC subsets in innate and adaptive immune responses has been significantly advanced over the years. Because of their immunoregulatory capacities and because very small numbers of activated DC are highly efficient at generating immune responses against antigens, DCs have been vigorously used in clinical trials in order to elicit or amplify immune responses against cancer and chronic infectious diseases. A better insight in DC immunobiology and function has stimulated many new ideas regarding the potential ways forward to improve DC therapy in a more fundamental way. Here, we discuss the continuous search for optimal in vitro conditions in order to generate clinical-grade DC with a potent immunogenic potential. For this, we explore the molecular and cellular mechanisms underlying adequate immune responses and focus on most favourable DC culture regimens and activation stimuli in humans. We envisage that by combining each of the features outlined in the current paper into a unified strategy, DC-based vaccines may advance to a higher level of effectiveness.

  2. System on chip (SoC) microcontrollers (μC) as digitisers for ion beam analysis (IBA) instruments

    Science.gov (United States)

    Whitlow, Harry J.

    2016-09-01

    Data digitisation of the analogue signals from detectors to digital data is an essential process in ion beam analysis (IBA). The low-cost, easy availability and development environments that have a low learning threshold makes system-on-chip (SoC) microcontrollers (μC) attractive for this task. These μC combine, on one die, analogue and digital inputs and outputs with serial USB interfaces, which opens up simple implementation of tailor-made interfaces for specific IBA measurement systems. We have investigated the design and performance limitations based on development of three different digitisation interfaces for IBA. These were a two-channel nuclear instrumentation module (NIM) ADC event mode interface (EMI) for a high-resolution magnetic RBS spectrometer, a simple headless-multi-channel analyser (MCA) and a combined dual channel headless MCA and EMI. It is shown that SoC μC based interfaces for digitisation of analogue spectroscopy pulses in IBA systems can be implemented for material costs less than 100 €. The performance of the SoC devices for many IBA applications is close to what can be achieved with state-of-the-art instruments. The simple pulse spectroscopy interface circuit and software are included in the auxiliary archive.

  3. Influence of directional solidification variables on primary dendrite arm spacing of Ni-based superalloy DZ125

    Institute of Scientific and Technical Information of China (English)

    Zhang Weiguo; Liu Lin; Huang Taiwen; Zhao Xinbao; Qu Min; Yu Zhuhuan; Fu Hengzhi

    2009-01-01

    The primary dendrite morphology and spacing of DZ125 superalloy have been observed during directional solidification under high thermal gradient about 500 K/cm. The results reveal that the primary dendrite arm spacing decreases from 94 μm to 35.8 μm with the increase of directional solidification cooling rate from 2.525 K/s to 36.4 K/s. The regression equation of the primary dendrite arm spacings λ1 versus cooling rate is λ1=0.013(GV)-0.32. The predictions of Kurz/Fisher model and Hunt/Lu model accord reasonably well with the experimental data. The influence of directional solidification rate under variable thermal gradient on the primary dendrite arm spacing has also been investigated.

  4. Influence of directional solidification variables on primary dendrite arm spacing of Ni-based superalloy DZ125

    Directory of Open Access Journals (Sweden)

    Zhang Weiguo

    2009-11-01

    Full Text Available The primary dendrite morphology and spacing of DZ125 superalloy have been observed during directional solidifi cation under high thermal gradient about 500 K/cm. The results reveal that the primary dendrite arm spacing decreases from 94 μm to 35.8 μm with the increase of directional solidifi cation cooling rate from 2.525 K/s to 36.4 K/s. The regression equation of the primary dendrite arm spacings λ1 versus cooling rate is λ1=0.013(GV-0.32. The predictions of Kurz/Fisher model and Hunt/Lu model accord reasonably well with the experimental data. The infl uence of directional solidifi cation rate under variable thermal gradient on the primary dendrite arm spacing has also been investigated.

  5. 基于 ARM9和 CC2530的远程无线抄表系统设计%The design of remote wireless meter reading system based on ARM 9 and CC2530

    Institute of Scientific and Technical Information of China (English)

    黄璟

    2014-01-01

    针对有线抄表方式空间局限性大、抗干扰能力差等问题,提出了一种基于ARM和ZigBee协议的远程无线抄表系统。该系统由数据采集、数据传输和集抄中心3部分组成。以低功耗片上系统CC2530为核心,采集器配以相应电能计量芯片STPM01进行数据采集,集中器设置了基于μCLinux操作系统的ARM9嵌入式网关,配备打印机接口、触摸屏接口等,用以实现快速现场查询、处理、存储、测试、打印等功能,并为将来复杂无线传感器数据的接入作准备。该无线电能抄表系统具有实用性强、可靠性高、低功耗和可扩展等特点,配置功率放大电路后,有障碍传输距离400 m左右。%For wired meter reading system has space limitations and poor anti-interference ability ,a re-mote meter reading system based on ARM and ZigBee protocol is proposed .This system consists of three parts:data acquisition ,data transmission and control center .Take the low power system-on-chip CC2530 as the core,the design goes together with the corresponding energy metering IC STPM 01 for data collection .Concen-trator is set up the embedded gateway based on ARM 9 and μCLinux operating system .Equipped with printer interface,touch screen interface ,etc.,the system is able to achieve rapid on-site inquiry,process,storage,tes-ting ,printing and other functions ,and make the future preparation of the data access of ubiquitous wireless sen-sor .The wireless meter reading system has strong practicability , high reliability , low power consumption and extensibility etc ,after configuring the power amplification circuit ,the transmission distance of about 400 m.

  6. MobiIe InteIIigent TerminaI Access ControI System Based on ARM-Linux and Wi-Fi%ARM Linux与WiFi的移动智能终端门禁系统设计

    Institute of Scientific and Technical Information of China (English)

    赵思蕊; 吴亚东; 杨文超; 蒋宏宇

    2015-01-01

    设计了一种基于嵌入式 ARM Linux平台和 Wi Fi通信的移动智能终端门禁系统,包括门禁装置和用户移动智能终端设备,其中门禁装置采用S3 C6410处理器,并以嵌入式 Linux为软件开发平台。移动智能终端设备则作为用户开门凭据,基于 Android系统开发门禁 APP,实现用户身份认证、注册和开门功能。测试结果表明,与现有门禁系统相比,该设计在安全性、可操作性和成本上有明显优势。%An access control system of mobile intelligent terminal based on ARM-Linux platform and Wi-Fi communication is designed, which includes access control device and user mobile intelligentx terminal equipment.The access control device uses S3C6410 processor and embedded Linux as the software development platform.Mobile intelligent terminal device is the proof of opening door,mobile intelli-gent terminal development access APP base on Android,which realizes the functions of user authentication,registration,and opening door.Results of the test indicate that the program design has obvious advantages on security,easy operation and low cost compared with the existing techniques and solutions.

  7. Design of a Module of Data Acquisition and Wireless Transmission Based on ARM7%基于ARM7的数据采集与无线传输模块设计

    Institute of Scientific and Technical Information of China (English)

    郑烨; 张伯虎

    2012-01-01

    This paper proposes a module of data acquisition and wireless transmission based on the ARM7 embedded system.Firstly,we introduce a data acquisition station system based on LPC2220 chip,and shows the design of a wireless transmission module which is composed of the embedded LPC2220 microprocessor and the chip of nRF905.When it works at 868 MHz,the rate of data transmission is 1 Mbit·s-1.The effective transmission radius can reach 800 meters with good stability by using the high gain antenna.The design has the advantages of high precision,high speed and real-time data acquisition and wireless transmission.%提出了一种基于ARM7嵌入式系统的数据采集与无线传输模块的设计方案,实现高精度、快速、实时的数据采集与传输。介绍了基于LPC2220芯片的数据采集系统,给出了由嵌入式LPC2220微处理器和射频收发芯片nRF905组成的无线传输模块设计。当其工作在868 MHz频段时,数据传输速率可达1 Mbit.s-1,采用高增益天线,使得传输距离可达800 m以上,且表现出良好的稳定性。最终实现高精度、快速、实时的数据采集与传输。

  8. The 2010 Standard Occupational Classification (SOC): A Classification System Gets an Update

    Science.gov (United States)

    Emmel, Alissa; Cosca, Theresa

    2010-01-01

    Making sense of occupational data isn't always easy. But the task is less daunting when the data are well organized. For Federal occupational statistics, the Standard Occupational Classification (SOC) system establishes that organization. And a recent revision to the SOC means that the data will be current, in addition to being well organized. The…

  9. Interferon alpha antagonizes STAT3 and SOCS3 signaling triggered by hepatitis C virus.

    Science.gov (United States)

    Zhao, Lan-Juan; He, Sheng-Fei; Wang, Wen; Ren, Hao; Qi, Zhong-Tian

    2016-04-01

    We aimed to investigate regulation of signal transducer and activator of transcription 3 (STAT3) and suppressor of cytokine signaling 3 (SOCS3) by interferon alpha (IFN-α) and to analyze the relationship between STAT3 and SOCS3 during hepatitis C virus (HCV) infection. Changes in STAT3 and SOCS3 were analyzed at both mRNA and protein levels in human hepatoma cells infected with HCV (J6/JFH1). At 72h of HCV infection, STAT3 expression was decreased with sustained phosphorylation, and IFN-α increased such decrease and phosphorylation. HCV increased SOCS3 expression, while IFN-α impaired such increase, indicating different regulation of STAT3 and SOCS3 by IFN-α. IFN-α-induced expression and phosphorylation of upstream kinases of the JAK/STAT pathway, Tyk2 and Jak1, were suppressed by HCV. Moreover, knockdown of STAT3 by RNA interference led to decreases in HCV RNA replication and viral protein expression, without affecting either the expression of Tyk2 and Jak1 or the SOCS3 induction in response to IFN-α. These results show that IFN-α antagonizes STAT3 and SOCS3 signaling triggered by HCV and that STAT3 regulation correlates inversely with SOCS3 induction by IFN-α, which may be important in better understanding the complex interplay between IFN-α and signal molecules during HCV infection. PMID:26945996

  10. Methylation of SOCS3 in Myeloproliferative Neoplasms and Secondary Erythrocytosis/Thrombocythemia

    Directory of Open Access Journals (Sweden)

    Deniz Torun

    2013-03-01

    Full Text Available OBJECTIVE: Myeloproliferative neoplasms (MPNs like essential thrombocythemia (ET, polycythemia vera (PV, and primary myelofibrosis (PMF are acquired clonal hematopoietic stem cell disorders and originate from a multipotent hematopoietic stem cell. The SOCS1 and SOCS3 genes are negative regulators of the JAK/STAT signal pathway. In this study we investigate the promoter methylation of these genes in the pathogenesis of MPNs and secondary erythrocytosis/thrombocythemia. METHODS: Promoter methylation of SOCS1 and SOCS3 genes was analyzed with methylation-specific PCR. PCR products were analyzed by agarose gel electrophoresis. RESULTS: No disease-specific CpG island methylation of SOCS1 was observed. Hypermethylation of the SOCS3 promoter was identified in 5 out of 19 (26.3% PV cases, 2 out of 21 (9.5% ET cases, 1 out of 5 (20% PMF cases, and 9 out of 42 (21.4% cases of secondary erythrocytosis/thrombocythemia. CONCLUSION: The results revealed that promoter methylation of the SOCS3 gene suggests a possible role for SOCS3 methylation in the pathogenesis of MPNs and secondary erythrocytosis/thrombocythemia.

  11. Power optimization and performance improvement for embedded Ethernet SOC

    Institute of Scientific and Technical Information of China (English)

    ZHENG Zhao-xia; ZOU Lian-ying; GAO Jun

    2008-01-01

    Information appliance is the combination of traditional home appliances and the internet technology. In this article, an Ethernet controller system-on-chip (SOC) solution for information appliances is presented. To achieve high performance, the embedded 8 bits 8051 micro control unit (MCU) is optimized by an independent instruction bus and a data bus. Besides, a two-stage pipeline feature is added. Compared with the existing 8051 core, the enhanced one-cycle MCU offers ten times improvement in instruction execution efficiency. Mean- while, the performance of media access control (MAC) circuit is greatly improved by adopting various techniques such as direct memory access (DMA) control, paging strategy, etc. To reduce the power consumption, clock gating, low power supply, and multi-working-clock are adopted. Moreover, to achieve rapid data communication in different clock frequency circuits, a simple ping-pong first in first out (FIFO) circuit is realized. The chip is implemented using TSMC 0.25 μm two-poly four-metal mixed signal complementary metal oxide semiconductor (CMOS) technology. Its die area is mm. The test results show that the maximum throughput of Ethernet packets can reach 7 Mb/s while the power consumption is rather low-the working current is just about 200 mA.

  12. Verification and Diagnosis Infrastructure of SoC HDL-model

    CERN Document Server

    Hahanov, Vladimir; Litvinova, Eugenia; Chumachenko, Svetlana

    2012-01-01

    This article describes technology for diagnosing SoC HDL-models, based on transactional graph. Diagnosis method is focused to considerable decrease the time of fault detection and memory for storage of diagnosis matrix by means of forming ternary relations in the form of test, monitor, and functional component. The following problems are solved: creation of digital system model in the form of transaction graph and multi-tree of fault detection tables, as well as ternary matrices for activating functional components in tests, relative to the selected set of monitors; development of a method for analyzing the activation matrix to detect the faults with given depth and synthesizing logic functions for subsequent embedded hardware fault diagnosing.

  13. Mixed-signal methodology guide advanced methodology for AMS IP and SOC design, verification and implementation

    CERN Document Server

    Chen, Jess; Mar, Monte F; Nizic, Mladen; Bailey, Brian

    2012-01-01

    This Book, The Mixed-Signal Methodology Guide: Advanced Methodology For Ams Ip And Soc Design, Verification, And Implementation Provides A Broad Overview Of The Design, Verification And Implementation Methodologies Required For Today's Mixed-Signal Designs. The Book Covers Mixed-Signal Design Trends And Challenges, Abstraction Of Analog Using Behavioral Models, Assertion-Based Metric-Driven Verification Methodology Applied On Analog And Mixed-Signal And Verification Of Low Power Intent In Mixed-Signal Design. It Also Describes Methodology For Physical Implementation In Context Of Concurrent Mixed-Signal Design And For Handling Advanced Node Physical Effects. The Book Contains Many Practical Examples Of Models And Techniques. The Authors Believe It Should Serve As A Reference To Many Analog, Digital And Mixed-Signal Designers, Verification, Physical Implementation Engineers And Managers In Their Pursuit Of Information For A Better Methodology Required To Address The Challenges Of Modern Mixed-Signal Design.

  14. Algorithm & SoC design for automotive vision systems for smart safe driving system

    CERN Document Server

    Shin, Hyunchul

    2014-01-01

    An emerging trend in the automobile industry is its convergence with information technology (IT). Indeed, it has been estimated that almost 90% of new automobile technologies involve IT in some form. Smart driving technologies that improve safety as well as green fuel technologies are quite representative of the convergence between IT and automobiles. The smart driving technologies include three key elements: sensing of driving environments, detection of objects and potential hazards, and the generation of driving control signals including warning signals. Although radar-based systems are primarily used for sensing the driving environments, the camera has gained importance in advanced driver assistance systems(ADAS). This book covers system-on-a-chip (SoC) designs—including both algorithms and hardware—related with image sensing and object detection by using the camera for smart driving systems. It introduces a variety of algorithms such as lens correction, super resolution, image enhancement, and object ...

  15. A new universal gate for low power SoC applications

    Indian Academy of Sciences (India)

    M Geetha Priya; K Baskaran

    2013-08-01

    This paper formulates a new design technique for an area and energy efficient Universal NAND gate. The proposed robust three transistors (3T) based NAND gate is just as effective for dynamic power control in CMOS VLSI circuits for System on Chip (SoC) applications. The 3T NAND gate is intuitively momentous and lead to better performance measures in terms of dynamic power, reduced area and high speed while maintaining comparable performance than the other available NAND gate logic structures. Simulation tests were performed by employing standard Berkeley Predictive Technology Model (BPTM) 22 nm, 45 nm and 90 nm process technologies. The experiment and simulation results show that, the proposed 3T NAND gate effectively outperforms the basic CMOS NAND gate with excellent driving capability and signal integrity with exact output logic levels.

  16. An embedded real-time red peach detection system based on an OV7670 camera, ARM cortex-M4 processor and 3D look-up tables.

    Science.gov (United States)

    Teixidó, Mercè; Font, Davinia; Pallejà, Tomàs; Tresanchez, Marcel; Nogués, Miquel; Palacín, Jordi

    2012-10-22

    This work proposes the development of an embedded real-time fruit detection system for future automatic fruit harvesting. The proposed embedded system is based on an ARM Cortex-M4 (STM32F407VGT6) processor and an Omnivision OV7670 color camera. The future goal of this embedded vision system will be to control a robotized arm to automatically select and pick some fruit directly from the tree. The complete embedded system has been designed to be placed directly in the gripper tool of the future robotized harvesting arm. The embedded system will be able to perform real-time fruit detection and tracking by using a three-dimensional look-up-table (LUT) defined in the RGB color space and optimized for fruit picking. Additionally, two different methodologies for creating optimized 3D LUTs based on existing linear color models and fruit histograms were implemented in this work and compared for the case of red peaches. The resulting system is able to acquire general and zoomed orchard images and to update the relative tracking information of a red peach in the tree ten times per second.

  17. 基于 ARM 的桌面型3D打印机控制系统设计%Design of desktop 3D printer control system based on ARM

    Institute of Scientific and Technical Information of China (English)

    谭秀腾; 郭小定; 李小龙; 余亮

    2014-01-01

    针对基于单片机为控制器的桌面型3D打印机控制系统中存在的处理速度慢、片外芯片多、电路复杂、打印质量不高等问题,设计了基于ARM为控制器的桌面型3D打印机控制系统。系统采用了NXP公司推出的基于ARM Cortex-M3内核的LPC1768微控制器,用它进行与上位机通信、数据处理、模拟量采集与处理、信号控制,选用A4988专用两相步进电机驱动器实现步进电机细分驱动,简化步进电机细分驱动的设计,行程开关电路采用GK152红外光电传感器。软件采用了PID方式调节加热床、挤出机加热温度。文中论述了控制系统主要硬件电路设计和软件的实现流程,系统测试表明性能良好。%The desktop 3D printer control systems with a sigle-chip controller have problems of slow processing speed, more pieces of outside chips, circuit complexity and poor quality of printing.To solve these problems, a desktop 3D printer control system with an ARM controller is designed.The system employs the LPC1768 microcon-troller based on ARM Cortex-M3 core which is introduced by the NXP and used to communicate with the host com-puter, data processing, analog acquisition and processing, signal control, used A4988 special two-phase stepper motor driver to implement stepper motor subdivision drive and to simplify the drive design for stepping motor.The travel switch circuit adopts GK152 infrared photoelectric sensor.The software adopted PID method in order to adjust the heating temperature of heating bed and extruder.This paper discusses the main hardware circuit design and soft-ware realization process of the control system.The System testing shows good performance.

  18. The Design of Data Acquisition Device Based on ARM7 and μC/OS-Ⅱ%基于ARM7内核和μC/OS-Ⅱ的数据采集装置设计

    Institute of Scientific and Technical Information of China (English)

    郑晋平

    2011-01-01

    A data acquisition device is designed in this paper,which adopts LPC2144 chip that based on ARM7 core and uses the advantages of μC/OS-Ⅱ embedded real-time operating system that are better cutting,portability as well as multi-tasking.The use of data acquisition device in the industrial control system is studied in detail.The device can collect,monitor and record kinds of parameters in production field.It is indicated by experiments that this device has the advantages such as low cost,low power consumption,micro-scale technology,and high accuracy,steady running,cost-effective,etc.In view of these advantages this device can be applied widely in kinds of industrial occasions.%基于ARM7内核的LPC2144芯片,利用μC/OS-Ⅱ嵌入式实时操作系统的可裁剪性、可移植性和多任务等特点支持下的数据采集装置,研究了数据采集装置在工业控制系统中的应用,在生产过程中可对生产现场的各种参数进行采集、监视和记录;数据采集是控制系统实现控制的基本条件,只有准确实时的获取对象的运行数据才能实施有效的控制。结果表明ARM7内核+嵌入式操作系统μC/OS-Ⅱ的移植数据采集装置,具有低成本、低功耗、微型化、精度高、运行稳定、性价比高等特点,不仅使其采集性能大幅度提高,而且抗干扰能力和实时性显著增强,可以在各种工业场合中广泛应用。

  19. Neurochemostat: A Neural Interface SoC With Integrated Chemometrics for Closed-Loop Regulation of Brain Dopamine.

    Science.gov (United States)

    Bozorgzadeh, Bardia; Schuweiler, Douglas R; Bobak, Martin J; Garris, Paul A; Mohseni, Pedram

    2016-06-01

    This paper presents a 3.3×3.2 mm(2) system-on-chip (SoC) fabricated in AMS 0.35 μm 2P/4M CMOS for closed-loop regulation of brain dopamine. The SoC uniquely integrates neurochemical sensing, on-the-fly chemometrics, and feedback-controlled electrical stimulation to realize a "neurochemostat" by maintaining brain levels of electrically evoked dopamine between two user-set thresholds. The SoC incorporates a 90 μW, custom-designed, digital signal processing (DSP) unit for real-time processing of neurochemical data obtained by 400 V/s fast-scan cyclic voltammetry (FSCV) with a carbon-fiber microelectrode (CFM). Specifically, the DSP unit executes a chemometrics algorithm based upon principal component regression (PCR) to resolve in real time electrically evoked brain dopamine levels from pH change and CFM background-current drift, two common interferents encountered using FSCV with a CFM in vivo. Further, the DSP unit directly links the chemically resolved dopamine levels to the activation of the electrical microstimulator in on-off-keying (OOK) fashion. Measured results from benchtop testing, flow injection analysis (FIA), and biological experiments with an anesthetized rat are presented. PMID:26390501

  20. Neural-Dynamic-Method-Based Dual-Arm CMG Scheme With Time-Varying Constraints Applied to Humanoid Robots.

    Science.gov (United States)

    Zhang, Zhijun; Li, Zhijun; Zhang, Yunong; Luo, Yamei; Li, Yuanqing

    2015-12-01

    We propose a dual-arm cyclic-motion-generation (DACMG) scheme by a neural-dynamic method, which can remedy the joint-angle-drift phenomenon of a humanoid robot. In particular, according to a neural-dynamic design method, first, a cyclic-motion performance index is exploited and applied. This cyclic-motion performance index is then integrated into a quadratic programming (QP)-type scheme with time-varying constraints, called the time-varying-constrained DACMG (TVC-DACMG) scheme. The scheme includes the kinematic motion equations of two arms and the time-varying joint limits. The scheme can not only generate the cyclic motion of two arms for a humanoid robot but also control the arms to move to the desired position. In addition, the scheme considers the physical limit avoidance. To solve the QP problem, a recurrent neural network is presented and used to obtain the optimal solutions. Computer simulations and physical experiments demonstrate the effectiveness and the accuracy of such a TVC-DACMG scheme and the neural network solver. PMID:26340789

  1. Motor imagery, P300 and error-related EEG-based robot arm movement control for rehabilitation purpose.

    Science.gov (United States)

    Bhattacharyya, Saugat; Konar, Amit; Tibarewala, D N

    2014-12-01

    The paper proposes a novel approach toward EEG-driven position control of a robot arm by utilizing motor imagery, P300 and error-related potentials (ErRP) to align the robot arm with desired target position. In the proposed scheme, the users generate motor imagery signals to control the motion of the robot arm. The P300 waveforms are detected when the user intends to stop the motion of the robot on reaching the goal position. The error potentials are employed as feedback response by the user. On detection of error the control system performs the necessary corrections on the robot arm. Here, an AdaBoost-Support Vector Machine (SVM) classifier is used to decode the 4-class motor imagery and an SVM is used to decode the presence of P300 and ErRP waveforms. The average steady-state error, peak overshoot and settling time obtained for our proposed approach is 0.045, 2.8% and 44 s, respectively, and the average rate of reaching the target is 95%. The results obtained for the proposed control scheme make it suitable for designs of prosthetics in rehabilitative applications.

  2. SOCS2 mediates the cross talk between androgen and growth hormone signaling in prostate cancer

    DEFF Research Database (Denmark)

    Iglesias Gato, Diego; Chuan, Yin Choy; Wikström, Pernilla;

    2014-01-01

    ) as mediator of the cross talk between androgens and GH signals in the prostate and its potential role as tumor suppressor in prostate cancer (PCa). We observed that SOCS2 protein levels assayed by immunohistochemistry are elevated in hormone therapy-naive localized prostatic adenocarcinoma in comparison...... with benign tissue. In contrast, however, castration-resistant bone metastases exhibit reduced levels of SOCS2 in comparison with localized or hormone naive, untreated metastatic tumors. In PCa cells, SOCS2 expression is induced by androgens through a mechanism that requires signal transducer and activator...... to GH. Our results suggest that the use of GH-signaling inhibitors could be of value as a complementary treatment for castration-resistant PCa.Summary: Androgen induced SOCS2 ubiquitin ligase expression and inhibited GH signaling as well as cell proliferation and invasion in PCa, whereas reduced SOCS2...

  3. Cancer targeting Gene-Viro-Therapy specific for liver cancer by α-fetoprotein-controlled oncolytic adenovirus expression of SOCS3 and IL-24

    Institute of Scientific and Technical Information of China (English)

    Xin Cao; Ruicheng Wei; Xinran Liu; Yan Zeng; Hongling Huang; Miao Ding; Kangjian Zhang; Xin-Yuan Liu

    2011-01-01

    The combination of gene therapy and virotherapy for cancer treatment has received close attention and has become a trend in the field of cancer biotherapy.A strategy called 'Cancer Targeting Gene-Viro-Therapy' (CTGVT) or 'Gene Armed Oncolytic Viral Therapy'(GAOVT) has been proposed,in which an antitumor gene is inserted into an oncolytic viral vector.In our previous study,a dual-regulated oncolytic adenovirus with enhanced safety for normal cells and strict liver cancertargeting ability,designated Ad·enAFP· E1A· E1 B (A55)(briefly Ad·enAFP·D55),was successfully constructed. In the current work,interleukin-24 (IL-24) and suppressor of cytokine signaling 3 (SOCS3) genes were packaged into Ad·enAFP·D55.The new constructs,Ad·enAFP·D55-(IL-24) and Ad·enAFP·D55-(SOCS3),showed improved tumoricidal activity in hepatoma cell lines compared with the oncolytic viral vector Ad·enAFP·D55.The coadministrationofAd · enAFP· D55-(IL-24)and Ad·enAFP·D55-(SOCS3) showed much better antitumor effect than Ad·enAFP·D55-(IL-24) or Ad·enAFP·D55-(SOCS3) alone both in vitro and in a nude mouse xenograft model.Moreover,our results also showed that blockade of the Jak/Stat3 pathway by Ad·enAFP·D55-(SOCS3) infection in HuH-7 cells could down-regulate some anti-apoptosis proteins,such as XIAP,Bcl-xL,and survivin,whichmightsensitizethecellsto Ad·enAFP·D55-(IL-24)-induced apoptosis.These results indicate that co-administration of Ad·enAFP·D55-(IL-24) and Ad·enAFP·D55-(SOCS3) may serve as a candidate therapeutic approach for the treatment of liver cancer.

  4. Brain-Computer Interface-based robotic end effector system for wrist and hand rehabilitation: results of a three-armed randomized controlled trial for chronic stroke

    Directory of Open Access Journals (Sweden)

    Kai Keng eAng

    2014-07-01

    Full Text Available The objective of this study was to investigate the efficacy of an Electroencephalography (EEG-based Motor Imagery (MI Brain-Computer Interface (BCI coupled with a Haptic Knob (HK robot for arm rehabilitation in stroke patients. In this three-arm, single-blind, randomized controlled trial; 21 chronic hemiplegic stroke patients (Fugl-Meyer Motor Assessment (FMMA score 10-50, recruited after pre-screening for MI BCI ability, were randomly allocated to BCI-HK, HK or Standard Arm Therapy (SAT groups. All groups received 18 sessions of intervention over 6 weeks, 3 sessions per week, 90 minutes per session. The BCI-HK group received 1 hour of BCI coupled with HK intervention, and the HK group received 1 hour of HK intervention per session. Both BCI-HK and HK groups received 120 trials of robot-assisted hand grasping and knob manipulation followed by 30 minutes of therapist-assisted arm mobilization. The SAT group received 1.5 hours of therapist-assisted arm mobilization and forearm pronation-supination movements incorporating wrist control and grasp-release functions. In all, 14 males, 7 females, mean age 54.2 years, mean stroke duration 385.1 days, with baseline FMMA score 27.0 were recruited. The primary outcome measure was upper-extremity FMMA scores measured mid-intervention at week 3, end-intervention at week 6, and follow-up at weeks 12 and 24. Seven, 8 and 7 subjects underwent BCI-HK, HK and SAT interventions respectively. FMMA score improved in all groups, but no intergroup differences were found at any time points. Significantly larger motor gains were observed in the BCI-HK group compared to the SAT group at weeks 3, 12 and 24, but motor gains in the HK group did not differ from the SAT group at any time point. In conclusion, BCI-HK is effective, safe, and may have the potential for enhancing motor recovery in chronic stroke when combined with therapist-assisted arm mobilization.

  5. Brain-computer interface-based robotic end effector system for wrist and hand rehabilitation: results of a three-armed randomized controlled trial for chronic stroke.

    Science.gov (United States)

    Ang, Kai Keng; Guan, Cuntai; Phua, Kok Soon; Wang, Chuanchu; Zhou, Longjiang; Tang, Ka Yin; Ephraim Joseph, Gopal J; Kuah, Christopher Wee Keong; Chua, Karen Sui Geok

    2014-01-01

    The objective of this study was to investigate the efficacy of an Electroencephalography (EEG)-based Motor Imagery (MI) Brain-Computer Interface (BCI) coupled with a Haptic Knob (HK) robot for arm rehabilitation in stroke patients. In this three-arm, single-blind, randomized controlled trial; 21 chronic hemiplegic stroke patients (Fugl-Meyer Motor Assessment (FMMA) score 10-50), recruited after pre-screening for MI BCI ability, were randomly allocated to BCI-HK, HK or Standard Arm Therapy (SAT) groups. All groups received 18 sessions of intervention over 6 weeks, 3 sessions per week, 90 min per session. The BCI-HK group received 1 h of BCI coupled with HK intervention, and the HK group received 1 h of HK intervention per session. Both BCI-HK and HK groups received 120 trials of robot-assisted hand grasping and knob manipulation followed by 30 min of therapist-assisted arm mobilization. The SAT group received 1.5 h of therapist-assisted arm mobilization and forearm pronation-supination movements incorporating wrist control and grasp-release functions. In all, 14 males, 7 females, mean age 54.2 years, mean stroke duration 385.1 days, with baseline FMMA score 27.0 were recruited. The primary outcome measure was upper extremity FMMA scores measured mid-intervention at week 3, end-intervention at week 6, and follow-up at weeks 12 and 24. Seven, 8 and 7 subjects underwent BCI-HK, HK and SAT interventions respectively. FMMA score improved in all groups, but no intergroup differences were found at any time points. Significantly larger motor gains were observed in the BCI-HK group compared to the SAT group at weeks 3, 12, and 24, but motor gains in the HK group did not differ from the SAT group at any time point. In conclusion, BCI-HK is effective, safe, and may have the potential for enhancing motor recovery in chronic stroke when combined with therapist-assisted arm mobilization.

  6. The Prognostic Role of SOCS3 and A20 in Human Cholangiocarcinoma.

    Directory of Open Access Journals (Sweden)

    Yimin Wang

    Full Text Available As an antagonist of the JAK/STAT pathway, suppressor of cytokine signaling 3 (SOCS3 plays an integral role in shaping the inflammatory environment, tumorigenesis and disease progression in cholangiocarcinoma (CCA; however, its prognostic significance remains unclear. Although tumor necrosis factor α-induced protein 3 (TNFAIP3, also known as A20 can decrease SOCS3 expression and is involved in the regulation of tumorigenesis in certain malignancies, its role in CCA remains unknown. In this study, we investigated the expression of SOCS3 and A20 in human CCA tissues to assess the prognostic significance of these proteins. The expression of SOCS3 and A20 was initially detected by western blot in 22 cases of freshly frozen CCA tumors with corresponding peritumoral tissues and 22 control normal bile duct tissues. Then, these proteins were investigated in 86 CCA patients by immunohistochemistry (IHC and were evaluated for their association with clinicopathological parameters in human CCA. The results indicated that SOCS3 expression was significantly lower in CCA tumor tissues than in corresponding peritumoral biliary tissues and normal bile duct tissues. Conversely, A20 was overexpressed in CCA tissues. Thus, an inverse correlation between the expression of SOCS3 and A20 was discovered. Furthermore, patients with low SOCS3 expression or high A20 expression showed a dramatically lower overall survival rate. These proteins were both associated with CCA lymph node metastasis, postoperative recurrence and overall survival rate. However, only A20 showed a significant association with the tumor node metastasis (TNM stage, while SOCS3 showed a significant association with tumor differentiation. Multivariate Cox analysis revealed that SOCS3 and A20 were independent prognostic indicators for overall survival in CCA. Thus, our study demonstrated that SOCS3 and A20 represent novel prognostic factors for human CCA.

  7. Design and realization of vehicle monitoring terminal based on ARM-Linux system%基于ARM-Linux的车载监控终端设计及实现

    Institute of Scientific and Technical Information of China (English)

    戚微苏; 赵宇; 潘勇

    2012-01-01

    A kind of the vehicle real-time monitoring remote terminal implementation scheme based on ARM-Linux system is proposed. The terminal, which is making use the Linux, Samsung S3C6410 Microprocessor as platform of software and hardware,and expanding the image acquisition,satellite positioning,radio frequency identification, wireless communication and other functional modules on the platform. It can realize the function of monitoring cargo security, providing the current position and image information of the car, achieving real-time communication. This paper focuses on the system hardware design and software design, the composition of the module and its functions in vehicle monitoring system. The experiments show that the terminal system has stable performance and meets the design requirements of function. In practical applications it has a certain value.%提出了一种基于ARM-Linux的车载实时监控远程终端实现方案.该车载监控终端系统以Linux、Samsung S3C6410微处理器作为软硬件平台,并在此硬件平台上扩展了图像采集、GPS定位、射频识别以及GPRS无线传输等功能模块.它可实现监控货物安全、提供车载位置和图像信息,达到实时监控的功能.重点阐述了终端系统的硬件设计及软件设计,各功能模块及其在车载监控终端系统中的功能.经多次实验表明,该终端系统性能稳定,满足设计的功能要求.在实际应用中具有一定的参考价值.

  8. 基于ARM920T的织机电控系统CAN总线接口模块设计%Design of CAN bus interface module based on ARM920T

    Institute of Scientific and Technical Information of China (English)

    刘宜胜; 苏鹏东; 胡旭东; 吴震宇; 王婷婷

    2011-01-01

    A CAN bus interface module was designed to connect the other sub-control systems to realize the real-time, reliable performance requirement of the high speed air-jet weaving machine. The hardware platform was mainly built using embedded microprocessor s3c2440A based on ARM920T kernel of Samsung company and CAN bus controller MCP2515 of Microchip. The software designing was implemented in the Windows CE operating system, including of driver module selection, stream interface functions realization, interrupt handling etc.. The test results show that the design meets the requirements of data transmission speed and reliability.%为实现喷气织机对电控系统通讯实时性、可靠性的要求,设计出一种用于连接织机各子控制系统的CAN总线接口模块.其中,硬件平台主要由三星公司的基于ARM920T内核的嵌入式微处理器s3c2440A及Microchip公司的CAN总线控制器MCP2515进行搭建;软件设计部分包括了WinCE操作系统下驱动选型、流接口函数实现、中断处理等内容.实验结果表明,该设计可以满足系统对数据传输的快速性和可靠性的要求.

  9. 基于ARM9的液晶驱动设计与μC/GUI移植研究%LCD driver design and transplant of μC/GUI based on ARM9

    Institute of Scientific and Technical Information of China (English)

    李彬; 纪常伟

    2011-01-01

    In process of embedded systems development, graphical user interface (GUI) is an important way for people to interact with the computer. As an important device for GUI, LCD was widely used in intelligent instruments and high - end embedded devices. This article describes the LCD controller in S3C2440 based on ARM920T core, interface circuit of LCD and its corresponding driver development. On this basis, μC/GUI which is a very excellent package of graphical user interface was transplanted in this system. The satisfactory result is attained on LCD screen by running examples of μC/GUI. The interface circuit and driver design for LCD and transplant of μC/GUI are proved reasonable and stable.%在嵌入式系统开发设计中,图形用户界面(GUI)是人与计算机进行交互的重要方式,液晶屏作为GUI的重要设备,在智能仪器仪表与高端嵌入式设备中得到广泛运用.文中介绍了基于ARM920T内核的芯片S3C2440内部LCD控制器以及LCD接口电路设计和相应驱动程序开发.并在此基础上移植了一种非常优秀的图形用户接口软件包μC/GUI.经过测试与μC/GUI实例运行,在液晶屏幕上得到了满意的显示效果,证明了液晶显示部分硬件接口、驱动设计以及μC/GUI移植的合理性与稳定性.

  10. 基于ARM9与Linux的人脸识别门禁系统设计%The Design of Door Security System for Face Recognition Based on ARM9 & Linux

    Institute of Scientific and Technical Information of China (English)

    刘巍; 汪兆栋

    2015-01-01

    针对现有门禁系统中存在的技术缺陷、维护成本高等问题,本文设计了一套基于 ARM+Linux 的人脸识别门禁系统。该系统采用S3C2410芯片为处理器、IP网络摄像头作为视频采集设备;采用PCA算法进行人脸图像识别,并以识别输出来控制电控锁模块,从而实现人脸识别门禁系统的智能控制。最后,在不同的环境下进行了人脸识别测试,测试结果表明,该系统能准确快速高效地识别人脸,平均识别率高达99%。%Aiming at these problems existing in the current entrance guard system, such as technical shortcomings and expensive maintenance cost, this paper designs a face recognition access system based on ARM9 and Linux. The S3C2410 chip and IP network camera are chosen as processor and video acquisition devices respectively. Then, the facial image recognition is implemented by the PCA algorithm and the electric lock module is controlled by utilizing therecognition output, and thus an intelligent control of face recognition entrance guard system is realized. Finally, sufficient facial recognition tests are performed under different environments, and the test results show that the system can recognize faces accurately, quickly, efficiently, and the average recognition rate reaches up to 99%.

  11. Design of embedded intelligent home control system based on Arm-Linux%基于Arm-Linux的嵌入式智能家居控制系统的设计

    Institute of Scientific and Technical Information of China (English)

    谭涛; 徐晓辉; 黄晓亮; 王盟; 温阳

    2011-01-01

    随着嵌入式技术、网络及信息技术的发展,针对人们对智能家居的追求.提出了一种基于ARM9的嵌入式智能家居控制系统的解决方案.介绍了嵌入式Linux系统的软硬件平台,结合实例阐述了嵌入式QT图形界面系统、嵌入式数据库SQLite等关键技术在嵌入式智能家居控制系统中的应用.该方案解决了控制系统的可视化操作问题,提高了系统数据管理效率,并具有通用性可移植到其他硬件或软件平台应用.%With the development of embedded technology,network and information technology,for the pursuit for the intelligent home,a projection of embedded intelligent home controlling systems is proposed based on ARM9.It describes the software and hardware platforms of embedded Linux systems,explains the appliance on embedded intelligent home controlling systems of key technologies such as embedded QT graphical interface system and embedded database SQLite with examples. The projection solves the problem of visual operations,and improve the efficiency of data management,what's more,it is universal portable to other hardware and software platforms to be applied.

  12. Design of distributed signal synchronization data acquisition system base on ARM9%基于ARM9分布信号同步数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    邱杰锋; 樊战友; 吴成英

    2011-01-01

    Distribution of signals for synchronous data acquisition,gives a method and process of design of synchronous data acquisition system base on ARM9, analysis and solution the main problems. This paper were introduced by the system's hardware composition and software design. The main function of system is the distribution of various parameters (such as temperature, pressure, sound) at different point in synchronization data acquisition, after the acquisition will be the analog to digital conversion. The biggest advantages of the system is use of the GPS signals control the ADC conversion time in order to realize high-precision synchronization of each acquisition node. Finally,the synchronous accuracy of the system can be achieved within 100ns by experiment.%针对分布信号的同步数据采集,给出了1种基于ARM9的同步数据采集系统的设计方法和过程,并对设计中遇到的主要问题进行了分析和解决.本文从系统的硬件组成、软件设计进行了说明.本系统主要功能是对分布在各个点的各种物理量(如温度、压力、声音)进行同步数据采集,将采集后的数据进行模数转换.系统最大的优点是利用GPS信号控制ADC芯片的转换时间从而实现各个采集节点的高精度同步.最后,通过实验验证了该系统的同步精度可以达到100ns以内.

  13. Research and design of self-service car-washing system based on ARM11%基于ARM11的自助洗车系统设计

    Institute of Scientific and Technical Information of China (English)

    周克良; 刘响响; 张跃飞; 刘松

    2016-01-01

    设计了一种投币式全自动洗车系统。根据语音提示,客户在完成缴费后,系统便可进入洗车环节。借助现代传感器网络技术,该系统采用非接触式洗车方式。通过光电传感器、接触式传感器采集汽车位置信息。以ARM11为控制核心,根据汽车位置信息控制各机构电机的运转以及各部分功能阀的开启与关闭,从而实现对汽车的清洗。实验表明:系统响应快、清洗效果好、各机构设置简单、节约系统耗材。%Design a coin automatic car-washing system. According to voice prompts,after customer completes payment,the system goes into the car-washing mode. Based on modern sensor network technology,the system uses non-contact car-washing way. Through photoelectric sensor and contact sensor,collect vehicle position information. The ARM11 is used as control core,according to vehicle position information,control operation of motor,and open and close of each part of functional valve,so as to realize car-cleaning. Experimental result shows that the system responds quickly,cleaning effect is good,setting of each mechanism is simple and save material cost.

  14. 基于ARM-Linux远程视频监控系统的设计%Design of Embedded Remote Monitoring System Based on ARM-Linux

    Institute of Scientific and Technical Information of China (English)

    王宏志; 宇皓林

    2014-01-01

    The authors designed a remote video capture and wireless transmission system based on embedded Linux operating system and COALL2440.The system needed USB video cameras and wireless LAN, which was built by configuring kernel, writing underlying drivers program and designing upper application.The system adopted the method of remote wireless data transmission, resolved the problem of monitoring the capture only on the computer and it made video be shown on the intelligent mobile terminal intuitively.Thus it can improve the applicability,the security and expansion of the monitoring system.%以COALL2440开发板为硬件平台,Linux操作系统为软件平台,并用 USB视频摄像头和无线网卡,通过对系统内核的配置,底层设备驱动程序的编写和上层应用程序的设计,构建嵌入式视频采集与无线传输系统。通过将采集到的视频图像进行远程无线数据传输的方法,解决了视频图像只能在PC机上进行监控的局限,使视频图像能直观地显示在智能移动终端上,从而提高监控系统的拓展性、安全性与适用性。

  15. Balance Maintenance in High-Speed Motion of Humanoid Robot Arm-Based on the 6D Constraints of Momentum Change Rate

    Directory of Open Access Journals (Sweden)

    Da-song Zhang

    2014-01-01

    Full Text Available Based on the 6D constraints of momentum change rate (CMCR, this paper puts forward a real-time and full balance maintenance method for the humanoid robot during high-speed movement of its 7-DOF arm. First, the total momentum formula for the robot’s two arms is given and the momentum change rate is defined by the time derivative of the total momentum. The author also illustrates the idea of full balance maintenance and analyzes the physical meaning of 6D CMCR and its fundamental relation to full balance maintenance. Moreover, discretization and optimization solution of CMCR has been provided with the motion constraint of the auxiliary arm’s joint, and the solving algorithm is optimized. The simulation results have shown the validity and generality of the proposed method on the full balance maintenance in the 6 DOFs of the robot body under 6D CMCR. This method ensures 6D dynamics balance performance and increases abundant ZMP stability margin. The resulting motion of the auxiliary arm has large abundance in joint space, and the angular velocity and the angular acceleration of these joints lie within the predefined limits. The proposed algorithm also has good real-time performance.

  16. Effect of dendrite arm spacing and the γ’ phase size on stress rupture properties of Ni3Al-base single crystal superalloy IC6SX

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The effect of dendrite arm spacing and the size of γ’ phase on stress rupture properties of as-cast Ni3Al-based single crystal superalloy IC6SX was studied.It has been found that the stress rupture properties were affected by dendrite arm spacing and the size of γ’ phase significantly,i.e.,the stress rupture lives of as-cast specimens under the test condition of 1100°C/120 MPa were significantly increased from about 10 h to 31 h with decreasing dendrite arm spacing and the size of γ’ phase from 3.0 μm and 1.6 μm to 1.3 μm and 0.8 μm,respectively.The creep cracks generated easily in the brittle Y-NiMo phase.Then the cracks gradually mergered and grew up during creep,and finally led to specimens fracture.The orientated coarsening of γ’ phase has been found in the stress ruptured specimens,due to the elements diffusion.However,the γ’ phase did not form the integrated structure during the short periods of 10-31 h as the creep tests lasted.

  17. Design and realization of the angular displacement measuring system based on embedded ARM%基于ARM的角位移测量系统研制

    Institute of Scientific and Technical Information of China (English)

    郑丰翔; 朱蕴璞

    2011-01-01

    为了实现角位移的高精度测量,研制了一种基于ARM的角位移测量系统.该系统以ARM9处理器S3C2410为核心,一方面控制旋转编码器采集角位移信号;另一方面通过USB接口与计算机通信,实现命令与数据的传输.在上位机利用C#编写应用程序,绘制并显示角位移、角速度和角加速度曲线.通过实验证明,该系统能快速准确对旋转体运行状况进行检测.%In order to achieve high-precision measurement ofangular displacement,a system based on embedded ARM isdesigned. The ARM9 S3C2410 embedded microprocessor is taken as the core. On the one hand, this kernel is used tocontrol rotary encoder to collect signals; on the other hand, its USB interface is used to transfer command and data toPC. Write program with C # ,and protract the angular acceleration, the angular velocity and the angular displacementcurve. The experimental results show that the system can detect the running status of rotating object quickly andaccurately.

  18. Circuitry Protector of Microcomputer Based on ARM and DSP%基于ARM和DSP的微机线路保护装置

    Institute of Scientific and Technical Information of China (English)

    张小伟

    2012-01-01

    This paper utilizes the effective and rapid digital signal processing capability of digital signal processor(DSP) and the powerful Ethernet network communication function of embed advanced reduced instruction set chip machine(ARM) processor,adopts the dual central processing unit(CPU) hardware structure combined DSP with ARM9,which uses the dual-interface random access memory(RAM) to perform the data exchange between them.The software design is based on embed Linux operating system,replants Bootloader and kernel,constructs the root file system of Ramdisk,and replants the application program.%在微机线路保护中,利用数字信号处理器(DSP)高效快速的数字信号处理能力和嵌入式先进的精简指令集芯片机器(ARM)处理器强大的以太网通信功能,采用DSP+ARM9的双中央处理器(CPU)的硬件结构,两者之间采用双口随机存储器(RAM)进行数据交换。软件设计基于嵌入式Linux操作系统,移植了Bootloader、内核,构建了Ramdisk的根文件系统,并移植了应用程序。

  19. A State of the Art Review- Methods to Evaluate Electrical Performance of Composite Cross-arms and Composite-based Pylons

    DEFF Research Database (Denmark)

    Wang, Qian; Bak, Claus Leth; Silva, Filipe Miguel Faria da;

    2016-01-01

    performance need to be studied. This paper sums up experience and key advances on testing methods to evaluate electrical performance of composite cross-arms and composite-based pylons. Based on state of the art review, several feasible testing methods that can be used to verify the feasibility of the novel......A novel uni-body composite pylon has been proposed for 400 kV transmission lines with advantages of compacted size, friendly looking and cost competitiveness. As its configuration is quite different from the traditional lattice pylon, its electrical performance needs in-depth investigation...

  20. Development of the SAIT single-port surgical access robot--slave arm based on RCM mechanism.

    Science.gov (United States)

    Roh, Se-gon; Lee, Younbaek; Lee, Jongwon; Ha, Taesin; Sang, Taejun; Moon, Kyung-Won; Lee, Minhyong; Choi, Jung-yun

    2015-01-01

    An innovative single-port surgical robot has recently been developed by the Samsung Advanced Institute of Technology (SAIT). The robot can reach various surgical sites inside the abdominal cavity from a single incision on the body. It has two 7-DOF surgical tools, a 3-DOF endoscope, a flexible hyper-redundant 6-DOF guide tube, and a 6-DOF manipulator. This paper primarily focuses on the manipulator, called a slave arm, which is capable of setting the location of a Remote Center Motion (RCM) point. Because the surgical tools can explore the abdominal area through a small incision point when the RCM point is aligned with the incision area, the RCM mechanism is an integral part of the manipulator for single-port surgery. The mechanical feature, operational principle, control method, and the system architecture of the slave arm are introduced in this paper. In addition, manipulation experiments conducted validate its efficacy. PMID:26737484

  1. Suppressor of cytokine signaling (SOCS genes are silenced by DNA hypermethylation and histone deacetylation and regulate response to radiotherapy in cervical cancer cells.

    Directory of Open Access Journals (Sweden)

    Moon-Hong Kim

    Full Text Available Suppressor of cytokine signaling (SOCS family is an important negative regulator of cytokine signaling and deregulation of SOCS has been involved in many types of cancer. All cervical cancer cell lines tested showed lower expression of SOCS1, SOCS3, and SOCS5 than normal tissue or cell lines. The immunohistochemistry result for SOCS proteins in human cervical tissue also confirmed that normal tissue expressed higher level of SOCS proteins than neighboring tumor. Similar to the regulation of SOCS in other types of cancer, DNA methylation contributed to SOCS1 downregulation in CaSki, ME-180, and HeLa cells. However, the expression of SOCS3 or SOCS5 was not recovered by the inhibition of DNA methylation. Histone deacetylation may be another regulatory mechanism involved in SOCS1 and SOCS3 expression, however, SOCS5 expression was neither affected by DNA methylation nor histone deacetylation. Ectopic expression of SOCS1 or SOCS3 conferred radioresistance to HeLa cells, which implied SOCS signaling regulates the response to radiation in cervical cancer. In this study, we have shown that SOCS expression repressed by, in part, epigenetically and altered SOCS1 and SOCS3 expression could contribute to the radiosensitive phenotype in cervical cancer.

  2. The Development of a General Purpose ARM-based Processing Unit for the TileCal sROD

    CERN Multimedia

    Cox, Mitchell A

    2014-01-01

    The Large Hadron Collider at CERN generates enormous amounts of raw data which present a serious computing challenge. After planned upgrades in 2022, the data output from the ATLAS Tile Calorimeter will increase by 200 times to 41 Tb/s! ARM processors are common in mobile devices due to their low cost, low energy consumption and high performance. It is proposed that a cost-effective, high data throughput Processing Unit (PU) can be developed by using several consumer ARM processors in a cluster configuration to allow aggregated processing performance and data throughput while maintaining minimal software design difficulty for the end-user. This PU could be used for a variety of high-level functions on the high-throughput raw data such as spectral analysis and histograms to detect possible issues in the detector at a low level. High-throughput I/O interfaces are not typical in consumer ARM System on Chips but high data throughput capabilities are feasible via the novel use of PCI-Express as the I/O interface t...

  3. The Development of a General Purpose ARM-based Processing Unit for the ATLAS TileCal sROD

    CERN Document Server

    Cox, Mitchell Arij; The ATLAS collaboration; Mellado Garcia, Bruce Rafael

    2015-01-01

    The Large Hadron Collider at CERN generates enormous amounts of raw data which present a serious computing challenge. After Phase-II upgrades in 2022, the data output from the ATLAS Tile Calorimeter will increase by 200 times to 41 Tb/s! ARM processors are common in mobile devices due to their low cost, low energy consumption and high performance. It is proposed that a cost-effective, high data throughput Processing Unit (PU) can be developed by using several consumer ARM processors in a cluster configuration to allow aggregated processing performance and data throughput while maintaining minimal software design difficulty for the end-user. This PU could be used for a variety of high-level functions on the high-throughput raw data such as spectral analysis and histograms to detect possible issues in the detector at a low level. High-throughput I/O interfaces are not typical in consumer ARM System on Chips but high data throughput capabilities are feasible via the novel use of PCI-Express as the I/O interface ...

  4. Analysis of Suppressor of Cytokine Signaling 2 Gene (SOCS2) Polymorphism in Different Dog Breeds

    OpenAIRE

    Martina Miluchová; Michal Gábor; Anna Trakovická; Peter Beke

    2011-01-01

    SOCS2 is a negative regulator of growth hormone signaling. The deletion of SOCS2 in mice results in a 30-50% increase in post-natal growth. The aim of the paper was to identify of suppressor of cytokine signaling 2 gene (SOCS2) polymorphism in different dog breeds. The material involved 77 dogs from 14 different breeds. Canine genomic DNA was isolated from saliva by modified method with using DNAzol® (Molecular Research Center) and linear polyacrylamide (LPA) carrier and from blood by using N...

  5. Suppressors of Cytokine Signaling (SOCS) in T cell differentiation, maturation, and function

    OpenAIRE

    Douglas C Palmer; Restifo, Nicholas P

    2009-01-01

    Cytokines are key modulators of T cell biology but their influence can be attenuated by suppressors of cytokine signaling (SOCS), a family of proteins comprised of eight members, SOCS1-7 and CIS. SOCS proteins regulate cytokine signals that control the polarization of CD4+ T cells into Th1, Th2, Th17, and T regulatory cell lineages, the maturation of CD8+ T cells from naïve to “stem-cell memory” (Tscm), central memory (Tcm), and effector memory (Tem) states, and the activation of these lympho...

  6. 基于ARM9的USB摄像头图像采集压缩及无线传输%ARM9-based USB Camera Image Capture Compression and Wireless Transmission

    Institute of Scientific and Technical Information of China (English)

    王恒; 王中训; 杜思良; 胡小赫

    2011-01-01

    This design is based on the Linux platform, and uses the camera for video capture and advanced MPEG-4 video compression standards to compress the information collected, then uses the GFSK launch 2.4G chips to send information to another ARM-based core embedded chips under the control of the LCD screen, enables wireless control. This system enables video capture, compression, transmission and remote display to achieve wireless monitoring. And the system is stability, portability, and very suitable for embedded applications.%设计了Linux系统平台下,利用摄像头进行视频采集,采用先进的MPEG-4视频压缩标准对所采集的信忠进行压缩,然后通过GFSK发射芯片,将信息发送到另一基于ARM核的嵌入式芯片所控制的液晶显示屏上.系统测试表明,本系统能实现视频的采集、压缩、传输及远程显示,从而实现无线监控,且系统具有稳定性、可移植性,十分适合嵌入式应用领域.

  7. Design of Dynamic Electrocardiogram Based on ARM Cortex-M3%基于ARM Cortex-M3的动态心电图机设计

    Institute of Scientific and Technical Information of China (English)

    谢建华; 刘海波; 刘瑞芳

    2012-01-01

    In order to enrich the product categories and function of the dynamic electrocardiogram,a new type of dynamic electrocardiogram product based on ARM (Advanced RISC Machines) Cortex-M3 is developed. The system hardware consists a processor minimum system,bioelectricity amplification module, storage module,LCD(Liquid Crstal Display) and touch screen module,high speed USB interface and the power module. For the system software, the platform was build based on CooCox CoOS embedded realtime operating system, the file system and USB middleware. The man-machine interface is realized by transplanting uC/GUI. The experiment results showed that the system could be used to control ECG signal collection,great capacity data storage and high-speed upload. The graphical user interface and real time waveform display are the innovative points.%针对目前动态心电图机产品种类和功能单一的现状,研制了基于ARM(Advanced RISC Machines) Cortex-M3的新型动态心电图机.硬件主要由处理器最小系统、生物电放大模块、存储模块、LCD (Liquid Cgstal Display)和触摸屏模块、高速USB接口和电源模块构成.软件开发基于CooCox CoOS嵌入式实时操作系统,同时使用了文件系统和USB等中间件.移植uC/GUI实现人机接口设计.测试结果表明,该系统不但实现了心电信号采集、大容量数据存储和高速上传的功能,而且创新性地增加了图形用户界面和实时波形显示功能.

  8. Growth hormone preferentially induces the rapid, transient expression of SOCS-3, a novel inhibitor of cytokine receptor signaling

    DEFF Research Database (Denmark)

    Adams, T E; Hansen, J A; Starr, R;

    1998-01-01

    Four members (SOCS-1, SOCS-2, SOCS-3, and CIS) of a family of cytokine-inducible, negative regulators of cytokine receptor signaling have recently been identified. To address whether any of these genes are induced in response to growth hormone (GH), serum-starved 3T3-F442A fibroblasts were...... (SOCS-1, SOCS-2, CIS) was also up-regulated by GH, although to a lesser extent than SOCS-3 and with differing kinetics. SOCS-3 expression was also strongly induced in 3T3-F442A cells treated with leukemia-inhibitory factor (LIF), with weaker induction of SOCS-1 and CIS being observed. The preferential...... induction of SOCS-3 mRNA was also observed in hepatic RNA isolated from the livers of mice that had received a single supraphysiological dose of GH intraperitoneally. Co-transfection studies revealed that constitutive expression of SOCS-1 and SOCS-3, but not SOCS-2 or CIS, blocked GH-induced transactivation...

  9. SOCS2 deletion protects against hepatic steatosis but worsens insulin resistance in high-fat-diet-fed mice

    DEFF Research Database (Denmark)

    Zadjali, Fahad; Santana-Farre, Ruyman; Vesterlund, Mattias;

    2012-01-01

    in the development of diet-induced hepatic steatosis and insulin resistance. SOCS2-knockout (SOCS2(-/-)) mice and wild-type littermates were fed for 4 mo with control or high-fat diet, followed by assessment of insulin sensitivity, hepatic lipid content, and expression of inflammatory cytokines. SOCS2(-/-) mice...

  10. SOCS5 is expressed in primary B and T lymphoid cells but is dispensable for lymphocyte production and function

    DEFF Research Database (Denmark)

    Brender, Christine; Columbus, Ruth; Metcalf, Donald;

    2004-01-01

    Suppressors of cytokine signaling (SOCSs) are key regulators of cytokine-induced responses in hematopoietic as well as nonhematopoietic cells. SOCS1 and SOCS3 have been shown to modulate T-cell responses, whereas the roles of other SOCS family members in the regulation of lymphocyte function are ...

  11. A simple dose regimen of artesunate and amodiaquine based on arm span- or age range for childhood falciparum malaria: a preliminary evaluation.

    Science.gov (United States)

    Sowunmi, Akintunde; Akinrinola, Ibukun A; Gbotosho, Grace O; Okuboyejo, Titilope M; Happi, Christian T

    2012-08-01

    A dose regimen of artesunate and amodiaquine based on arm span- or age range (DRAAAS), derived from a study of 1674 children, was compared with standard dose regimen of the same drugs calculated according to body weight (SDRAA) in 68 malarious children. Children on DRAAAS received 0.8-1.0 of artesunate/kg and 0.9-1.2 times amodiaquine/kg compared with those receiving SDRAA. Parasite and fever clearance and fall in hematocrit in the first 3 days were similar; both regimens were well tolerated. DRAAAS is simple and is efficacious.

  12. ARM Cortex M0的油田采输物联网监控系统设计%Design of IoT Monitoring System for Oil Extraction and Transportation Based on ARM Cortex-M0

    Institute of Scientific and Technical Information of China (English)

    于玉珠; 殷春莉

    2014-01-01

    为了提升油田生产的自动化程度,保障安全,降低运行成本,扩大对环境恶劣和偏远地区的自动化覆盖范围,设计一种油田采输物联网监控系统。该系统以基于 ARM Cortex M0的 LPC11C14FBD48为主控芯片,M35为 GPRS 通信模块,用 C++语言开发内核软件和远程集中监控中心软件。可远程对油田采输现场的数据进行采集和系统控制,同时与云计算服务中心实现数据交互,为大数据处理提供基础。该系统实现了油田采输无人值守,覆盖偏远区域,降低了运行成本,提升了油田生产的安全性、可靠性和高效性,使油田生产综合效益明显提高。%In order to raise the automation degree and security in oil field production,reduce the running cost and improve the automated range of poor environment and remote areas,a kind of IoT monitoring control system for oil production is designed.The system takes LPC1 1C14FBD48 based on ARM Cortex-M0 as main control chip and M35 as GPRS communication module.C++ is used to develop kernel software and the software of remote centralized monitoring control center.Remote data acquisition and system control of oil acqui-sition areas are realized,and data interactions with the cloud computing service center are completed so as to provide basic data for big data processing.The system can be applied in poor environment and remote areas.It not only saves the operation cost,but also improves safety,reliability and efficiency,so that it increases obviously comprehensive benefits of oil field production.

  13. Power Integrity Analysis of ARM11 Core Board Based on FEM%基于有限元方法的ARM11核心板电源完整性分析

    Institute of Scientific and Technical Information of China (English)

    沈敏; 吴明赞; 李竹

    2014-01-01

    ARM11 core board belongs to high-speed circuit board,and during the design we need to reduce input impedance of PDN ( Power Delivery Network ) to improve power integrity. SSN ( Simultaneous Switching Noise ) produced by 10 transistors and DC/AC Characteristics of PDN before and after adjustment are simulated based on FEM,the simulation results indicate that chip power voltage fluctuation reaches 7. 9% when 10 transistors switch simultaneously;DC voltage of 1. 2 V PDN is increased from 1. 17 V to 1. 18 V,current density of PDN is reduced integrally;Resonance phenomenon of PDN is weakened at the frequency of 397 MHz;So chip power voltage hasn't satisfied the requirements when 10 transistors switch simultaneously,after PDN is adjusted,the input impedance and voltage fluctuation of PDN is reduced finally.%ARM11核心板属于高速电路板,在设计中需要降低电源配送网络( Power Delivery Network)的输入阻抗来提高电源完整性。基于有限元方法对10个晶体管产生的同步开关噪声( Simultaneous Switching Noise)、调整前后PDN的直流/交流特性进行仿真,仿真结果表明:10个晶体管同时开关时芯片电源电压波动达7.9%;1.2 V PDN的直流电压从1.17 V增加到1.18 V,PDN的电流密度整体得到降低;在397 MHz谐振频率处PDN的谐振现象得到减弱;因此当达到10个晶体管同时开关时芯片电源电压已不满足要求,在对PDN调整后最终降低了PDN的输入阻抗和电压波动。

  14. 基于ARM11的机动车柔性限行管理系统设计%Flexible Vehicle Restriction Management System Based on ARM11

    Institute of Scientific and Technical Information of China (English)

    张凯; 孙跃; 周侃; 江慧

    2014-01-01

    为解决城市道路交通拥挤问题,设计了一套基于ARM11的机动车柔性限行管理系统。系统采用S3C6410微处理器为核心,利用GPRS无线通信技术将GPS定位信息传输到交管信息处理中心服务器。交管中心分路段设定限行比例,统计机动车该月在限行路段中出行天数,并将机动车出行信息反馈给车主,对超出限行比例的机动车收取拥挤费,从而实现机动车柔性限行管理。实验证明:GPRS发送GPS定位信息准确,车辆出行信息反馈及时,系统设计达到了预期的功能和要求。%In order to solve the problem of urban road congestion, a flexible ARM11-based vehicle limit line management system was designed. System uses S3C6410 microprocessor core, applies the GPRS wireless communication technology to transmit information to the GPS positioning information processing traffic control center server. The traffic control center to set vehicle restriction ratio by sections, and count vehicles travel days in this month at the limit line sections,feed back to the vehicle's travel information to the car owner,charge the congestion fee for the proportion of vehicles exceeding the vehicle restriction ratio, thus we could achieve a flexible vehicle restriction management. Experiments show that GPRS to send GPS location information is accurate,timely feedback vehicle travel,system design to achieve the desired functionality and requirements.

  15. 基于ARM和WSNs的智能家居安防系统设计%Design of Smart Home Security System Based on ARM and WSNs

    Institute of Scientific and Technical Information of China (English)

    杨靖; 林益; 李捍东

    2012-01-01

    In accordance with the demands for home security and safeguard, the intelligent monitoring system based on ARM and WSNs is researched and developed. The detection and communication platform is established by the system with wireless sensor network as the foundation. The household central controller, detection nodes and actuation nodes are setup by adopting the embedded system based on ARM microprocessor and nRF9E5 wireless single chip computer. The home environment is detected through the sensors equipped in detection nodes; trie alarm information is transmitted to household central controller and actuation nodes. The system features good detection effects, and is expandable and flexible, it is an effective solution for implementing home security and safeguard.%针对家居安防系统的需求,设计研发了基于ARM和WSNs的智能家居安防监控系统.该系统以无线传感器网络为基础,构建探测和通信平台,采用以ARM9微处理器和nRF9E5无线单片机为核心的嵌入式系统构建家庭总控制器、探测节点和执行节点.探测节点利用配置好的传感器对家居环境进行监测,并通过无线通信方式将报警信息传送给家庭总控制器和执行节点.该系统具有探测效果好、可扩展性强和装设灵活的优点,是家居安防的有效解决方案.

  16. Effects of Action Observational Training Plus Brain-Computer Interface-Based Functional Electrical Stimulation on Paretic Arm Motor Recovery in Patient with Stroke: A Randomized Controlled Trial.

    Science.gov (United States)

    Kim, TaeHoon; Kim, SeongSik; Lee, ByoungHee

    2016-03-01

    The purpose of this study was to investigate whether action observational training (AOT) plus brain-computer interface-based functional electrical stimulation (BCI-FES) has a positive influence on motor recovery of paretic upper extremity in patients with stroke. This was a hospital-based, randomized controlled trial with a blinded assessor. Thirty patients with a first-time stroke were randomly allocated to one of two groups: the BCI-FES group (n = 15) and the control group (n = 15). The BCI-FES group administered to AOT plus BCI-FES on the paretic upper extremity five times per week during 4 weeks while both groups received conventional therapy. The primary outcomes were the Fugl-Meyer Assessment of the Upper Extremity, Motor Activity Log (MAL), Modified Barthel Index and range of motion of paretic arm. A blinded assessor evaluated the outcomes at baseline and 4 weeks. All baseline outcomes did not differ significantly between the two groups. After 4 weeks, the Fugl-Meyer Assessment of the Upper Extremity sub-items (total, shoulder and wrist), MAL (MAL-Activity of Use and Quality of Movement), Modified Barthel Index and wrist flexion range of motion were significantly higher in the BCI-FES group (p stroke rehabilitation. The limitations of the study are that subjects had a certain limited level of upper arm function, and the sample size was comparatively small; hence, it is recommended that future large-scale trials should consider stratified and lager populations according to upper arm function.

  17. C形臂透视影像的手术引导系统%A Surgical Navigation System Based on C-arm Fluoroscopy Images

    Institute of Scientific and Technical Information of China (English)

    钱理为; 闫士举; 夏庆; 王成焘

    2009-01-01

    A surgical navigation system based on X-rays of C-arm with a calibration target has been studied and developed. Extracting images of markers in the two templates on the calibration target,the system is able to establish the relationship between different markers coordinates in different coordinate systems using the algorithm based on the layout of specific markers. The correction of X-ray image distortion and C-arm camera calibration are performed using the images of calibration target as bases. After the parameters of the C-arm projection model being determined,an X-ray image of surgical site will be acquired preoperatively; the surgical instruments will be tracked by the optical position system,and then virtual projections of instruments can be formed on preoperative images. Surgeons will perform operations with the guidance of the system. The C-arm can be used less frequently and the X-ray radiation can be reduced. Cadaveric spine specimen experiments and error analysis have underpinned the clinical feasibility of the system.%研究开发了一种基于校准靶的C形臂X线影像的手术引导系统.系统通过提取分布在校准靶双层模板上的标志点影像,利用标志点特定的分布,提出了确定对应关系的算法,建立了不同坐标系之间标志点中心坐标的联系.基于校准靶影像,校正C形臂X线影像的失真,对C形臂相机模型进行校准.确定C形臂投影模型参数后,术前预先获得病患部位透视影像,术中通过光学定位系统实时跟踪手术工具,在术前影像上形成工具的虚拟投影,引导医生进行手术,从而减少C形臂的使用次数,降低了X线辐射剂量.脊柱标本实验和误差分析表明该系统在临床有一定的使用价值.

  18. A step toward 'plug and play' robotics with SoC technology

    DEFF Research Database (Denmark)

    Sørensen, Anders Stengaard; Falsig, Simon; Ugilt, Rolf

    p, li { white-space: pre-wrap; } This article describe our progress toward simplifying and streamlining the low level systems integration of experimental robots, combining a System on Chip (SoC) approach with conventional modular approaches. The combined approach has increased flexibility, improved...... the embedded integration, and decreased the complexity of programming, compared to conventional modular approaches. We show the impact of the SoC approach in a simple demonstration and teaching model of a walking robot....

  19. SOCS1 regulates the immune modulatory properties of mesenchymal stem cells by inhibiting nitric oxide production.

    Directory of Open Access Journals (Sweden)

    Lei Zhang

    Full Text Available Mesenchymal stem cells (MSCs have been shown to be highly immunosuppressive and have been employed to treat various immune disorders. However, the mechanisms underlying the immunosuppressive capacity of MSCs are not fully understood. We found the suppressor of cytokine signaling 1 (SOCS1 was induced in MSCs treated with inflammatory cytokines. Knockdown of SOCS1 did not bring much difference on the proliferation and differentiation properties of MSCs. However, MSCs with SOCS1 knockdown exhibited enhanced immunosuppressive capacity, showing as inhibiting T cell proliferation at extremely low ratio (MSC to T in vitro, significantly promoting tumor growth and inhibiting delayed-type hypersensitivity response in vivo. We further demonstrated that SOCS1 inhibited the immunosuppressive capacity of MSCs by reducing inducible nitric oxide synthase (iNOS expression. Additionally, we found the significantly lower SOCS1 expression and higher nitric oxide (NO production in MSCs isolated from synovial fluid of rheumatoid arthritis patients. Collectively, our data revealed a novel role of SOCS1 in regulating the immune modulatory activities of MSCs.

  20. Changing patterns of US arms transfers

    Energy Technology Data Exchange (ETDEWEB)

    Salomone, M.D.

    1985-01-01

    The thesis has three purposes. First is to explore the changing patterns of US arms transfers from Fiscal Year 1950 (FY 1950) through Fiscal Year 1980 (FY 1980). Second, is to describe and assess the decision-making process for arms transfers within the US Government. Third is to examine and critique the conventional wisdom concerning US arms transfers, to support that wisdom, or to offer an alternate empirically supported view. The conventional wisdom about US arms transfer is that they have been rising at an alarming rate, and that this is the result of an arms transfer decision-making process which is out of control. This belief is founded on an empirically based proposition that arms transfers have been rising at an alarming rate. However, this proposition has never been empirically validated. To explore this conventional wisdom, the author establishes the historical, political and defense policy contexts for US arms transfers over the period FY 1950 through FY 1980. The author critiques the conventional wisdom about US arms transfers, analyzes the many ways that arms transfers have been measured, and explores the impediments to accurate measurement and assessment of the phenomenon.

  1. Prediction of three-dimensional arm trajectories based on ECoG signals recorded from human sensorimotor cortex.

    Science.gov (United States)

    Nakanishi, Yasuhiko; Yanagisawa, Takufumi; Shin, Duk; Fukuma, Ryohei; Chen, Chao; Kambara, Hiroyuki; Yoshimura, Natsue; Hirata, Masayuki; Yoshimine, Toshiki; Koike, Yasuharu

    2013-01-01

    Brain-machine interface techniques have been applied in a number of studies to control neuromotor prostheses and for neurorehabilitation in the hopes of providing a means to restore lost motor function. Electrocorticography (ECoG) has seen recent use in this regard because it offers a higher spatiotemporal resolution than non-invasive EEG and is less invasive than intracortical microelectrodes. Although several studies have already succeeded in the inference of computer cursor trajectories and finger flexions using human ECoG signals, precise three-dimensional (3D) trajectory reconstruction for a human limb from ECoG has not yet been achieved. In this study, we predicted 3D arm trajectories in time series from ECoG signals in humans using a novel preprocessing method and a sparse linear regression. Average Pearson's correlation coefficients and normalized root-mean-square errors between predicted and actual trajectories were 0.44~0.73 and 0.18~0.42, respectively, confirming the feasibility of predicting 3D arm trajectories from ECoG. We foresee this method contributing to future advancements in neuroprosthesis and neurorehabilitation technology.

  2. Prediction of three-dimensional arm trajectories based on ECoG signals recorded from human sensorimotor cortex.

    Directory of Open Access Journals (Sweden)

    Yasuhiko Nakanishi

    Full Text Available Brain-machine interface techniques have been applied in a number of studies to control neuromotor prostheses and for neurorehabilitation in the hopes of providing a means to restore lost motor function. Electrocorticography (ECoG has seen recent use in this regard because it offers a higher spatiotemporal resolution than non-invasive EEG and is less invasive than intracortical microelectrodes. Although several studies have already succeeded in the inference of computer cursor trajectories and finger flexions using human ECoG signals, precise three-dimensional (3D trajectory reconstruction for a human limb from ECoG has not yet been achieved. In this study, we predicted 3D arm trajectories in time series from ECoG signals in humans using a novel preprocessing method and a sparse linear regression. Average Pearson's correlation coefficients and normalized root-mean-square errors between predicted and actual trajectories were 0.44~0.73 and 0.18~0.42, respectively, confirming the feasibility of predicting 3D arm trajectories from ECoG. We foresee this method contributing to future advancements in neuroprosthesis and neurorehabilitation technology.

  3. 一种电动车用锂电池剩余容量检测系统%A SOC detecting system for electric bicycle battery

    Institute of Scientific and Technical Information of China (English)

    赵庆河

    2012-01-01

    针对电动车应用中的需求,提出了一种电动车用锂电池剩余容量(SOC)检测的方法,并设计了一套SOC检测系统.该系统以AVR单片机为控制及计算核心、以ACS712为电流采集器,采用线性光耦隔离模拟电压信号,集合充放电电流对时间的积分和BP神经网络估算两种方法来测量电池SOC值.该系统具有成本低、安全可靠、计算准确等特点,适合在电动车上推广使用.%For electric bicycle application demand, a method of electric bicycle lithium battery state of charge (SOC) detection is proposed, and a SOC detection system is designed. The system is based on AVR MCU as the control and calculation core, used ACS712 as current collector. It uses a linearopto -isolator to insulate analog voltage signal. It measures SOC of the battery integrating two methods which are current integration to the time and BP neural network estimation. The system has the advantages of low cost, safe and reliable, accurate calculation and other characteristics. It is suitable for use in electric vehicles.

  4. The arms race control

    International Nuclear Information System (INIS)

    Written in 1961, this paper presents the content of a book entitled 'The arms race control' where the author outlined the difference between disarmament and arms control, described the economic and moral role of arms race, the importance of force balance for international security. He wandered whether arms control could ensure this balance and whether nuclear balance meant force balance. Force balance then appears to be a precarious and unsteady component of international security. He commented the challenges of disarmament, recalled some arguments for a nuclear disarmament. Then he discussed what would be an arms control with or without disarmament (either nuclear or conventional)

  5. Modal Analysis of the Harvesting Robot Arm Based on ANSYS Workbench%基于 ANSYS Workbench 的采摘机器人臂架模态分析

    Institute of Scientific and Technical Information of China (English)

    杨志敏; 周健; 李立君; 程学良

    2013-01-01

    In order to improve the harvesting efficiency of forest-fruit, the structure characteristics of the Harvesting Ro-bot Arm was introduced , the harvesting robot should have more reasonable structure and dynamic performance .Based on the modal analysis theory , a finite element model of the harvesting robot arm was established by utilizing the software of ANSYS Workbench .Three kinds of typical pose were selected , further more , the preceding six steps natural frequency and mode were obtained .Last but not at least , the weak parts of the robot arm were found out and relative improving su ggestion was put forward , which laid foundation for the optimized design .%介绍了采摘机器人臂架的结构特征;为了提高林果的采收效率,使采摘机器人具有更合理的结构和动态特性,以模态分析理论为基础,应用有限元分析软件ANSYSWorkbench,建立了采摘机器人臂架的有限元模型;选取臂架的3种典型位姿,得出了其在不同位姿下的前6阶固有频率和振型,找出薄弱环节,提出了相应的改进方案,为臂架的进一步优化设计打下基础。

  6. Design of audio data acquisition system based on ARM and DSP%基于ARM与DSP的声频数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    周静雷; 江浩; 乔站仙

    2012-01-01

    结合1个基于ARM与DSP双核架构的声频数据采集系统的开发,介绍了ARM和DSP之间基于HPI通信的接口设计以及A/D、D/A接口设计,说明了接口工作原理及相关配置.提出了一种声频数据采集方案,利用ARM实现控制与人机交互,用DSP做信号处理,给出了数据采集的系统框图和软件流程图.该方案可充分利用DSP的McASP接口实现高精度A/D、D/A转换,利用HPI主机并行接口实现ARM与DSP之间的快速数据传输,从而实现海量声频数据流的高效、实时传输.%According to an audio data acquisition system,this paper introduces the communication interface design on the basis of HPI between ARM and DSP,and A/CD/A converter design,describes the operating principle of interfaces and relevant configuration. A method of audio data acquisition is presented, control is based on ARM, DSP takes charge of signal processing,it provides the system chart of data acquisition and software flow chart. This design scheme can take full advantage of McASP interface to achieve high-precision AD & DA converter,and HPI interface is used to realize high speed data transfer between ARM and DSP, thereby achieving efficient and real-time transmission of huge amounts of audio data stream.

  7. The Methylation of SOCS-1 Gene in Adult Acute Myeloid Leukemia%成人急性髓性白血病SOCS-1基因及其甲基化的研究

    Institute of Scientific and Technical Information of China (English)

    庄衍; 程毅敏; 汪雷; 窦红菊; 朱琦; 胡钧培

    2011-01-01

    Objective: To investigate the role of SOCS-1 (Suppressor of Cytokine Signalling-1) in tumorigenesis of adult acute myeloid leukemia (AMDby detecting the methylation state and expression of SOCS-1 gene. Methods: A total of 24 patients with AML, 10 healthy volunteers and 4 cell lines (Jurkat, Raji, U 937, NALM 17) were chosen. The methylation state of SOCS-1 in samples and cell lines were detected by using methylation-specific polymerase chain reation (MSP), and the expression of SOCS-1 was detected by using Real-time PCR. Results: The aberrant methylation of SOCS-1 was 62.5 % (15/24 )in primary patients with AML. In contrast, there was no aberrant methylation of SOCS-1 gene in normal samples (P<0.05). The expression of SOCS-1 in AML patients with aberrant methylation of SOCS-1 gene was lower than that in AML patients without aberrant methylation of SOCS-1 gene (P<0.05). There was no relation between the methylation of SOCS-1 gene and the clinicopathological data (such as sex, age and tumor stage). Conclusion: The methylation of SOCS-1 gene in AML was higher than that in control group significantly (P<0.05), and aberrant methylation strongly correlates with reduced expression. SOCS-1 gene may play an important role in tumorigenesis of AML.%目的:通过检测成人急性髓性白血病中SOCS-1基因表达水平及其甲基化水平,研究其在白血病发病中的作用.方法:运用甲基化特异性PCR(Methylation specific PCR,MSP)方法,对24例急性髓性白血病患者和4株白血病细胞株(Jurkat、Raji、U 937、NALM 17),进行SOCS-1基因甲基化水平的研究;同时运用Real-time PCR法定量分析SOCS-1基因表达水平.以10例健康人为正常对照组.结果:24例成人急性髓性白血病患者中,15例有SOCS-1基因甲基化(62.5%),而正常对照组无SOCS-1基因甲基化(0%),二者有显著差异( P<0.05);SOCS-1基因甲基化组与无SOCS-1基因甲基化组相比较,其SOCS-1基因相对表达量明显减少(P口0.05);与患

  8. Scanning ARM Cloud Radar Handbook

    Energy Technology Data Exchange (ETDEWEB)

    Widener, K; Bharadwaj, N; Johnson, K

    2012-06-18

    The scanning ARM cloud radar (SACR) is a polarimetric Doppler radar consisting of three different radar designs based on operating frequency. These are designated as follows: (1) X-band SACR (X-SACR); (2) Ka-band SACR (Ka-SACR); and (3) W-band SACR (W-SACR). There are two SACRs on a single pedestal at each site where SACRs are deployed. The selection of the operating frequencies at each deployed site is predominantly determined by atmospheric attenuation at the site. Because RF attenuation increases with atmospheric water vapor content, ARM's Tropical Western Pacific (TWP) sites use the X-/Ka-band frequency pair. The Southern Great Plains (SGP) and North Slope of Alaska (NSA) sites field the Ka-/W-band frequency pair. One ARM Mobile Facility (AMF1) has a Ka/W-SACR and the other (AMF2) has a X/Ka-SACR.

  9. A State of the Art Review- Methods to Evaluate Electrical Performance of Composite Cross-arms and Composite-based Pylons

    DEFF Research Database (Denmark)

    Wang, Qian; Bak, Claus Leth; Silva, Filipe Miguel Faria da;

    2016-01-01

    A novel uni-body composite pylon has been proposed for 400 kV transmission lines with advantages of compacted size, friendly looking and cost competitiveness. As its configuration is quite different from the traditional lattice pylon, its electrical performance needs in-depth investigation...... and evaluation, for which electrical testing methods are essential. However, as research on composite-based pylons is still in initial stage, leaving international standards and theoretical analysis on this topic very limited, effective testing methods to evaluate the fully composite pylon’s electrical...... performance need to be studied. This paper sums up experience and key advances on testing methods to evaluate electrical performance of composite cross-arms and composite-based pylons. Based on state of the art review, several feasible testing methods that can be used to verify the feasibility of the novel...

  10. Influence of overexpression of SOCS2 on cells of DN rat

    Institute of Scientific and Technical Information of China (English)

    Na-Na; Bao; De-Yang; Kong; Dan; Zhu; Li-Rong; Hao

    2015-01-01

    Objective: To explore the influence and mechanism of overexpression of SOCS2 on diabetic nephropathy(DN) rats and cells. Methods: STZ was used to induce male SD rats and SOCS2 was injected into left renal vein. Rats were divided into DN group, DN-Ad-null group and DNAd-SOCS2 group. Glucose with high and normal concentration was used to culture HBZY-1 cells and then transfect Ad-SOCS2. HG group, HG-Ad-null group, HG-Ad-SOCS2 group, CG group, CG-Ad-null group, and CG-Ad-SOCS2 group were created. The expression of inflammatory cytokines(MCP-1, TNF-α and IL-6) in kidney tissue of rats, fibrosis related protein(FN, Collagen Ⅳ and TGF-β) in kidney tissue and cells of rats, and JAK/STAT signaling pathway related proteins(p-JAK2 and p-STAT3) were tested by western blot. ELISA was used to test the expression of inflammatory cytokines(TNF-α and IL-6) in cells. Results: The expression of inflammatory cytokines in DN rats(MCP-1, TNF-α and IL-6) and cell(TNF-α and IL-6) were increased(P<0.01) significantly. However, SOCS2 could decrease the overexpression of mediated inflammatory cytokines in DN animal models and cell models(P<0.01). The expression of fibrosis related protein in DN rats and cells increased while SOCS2 decreased the overexpression of mediated fibrosis related protein in DN model rats and cells(P<0.01). The expression of JAK/STAT pathway related protein in both DN rats and cells increased and the JAK/STAT signaling pathway was activated. Yet, SOCS2 obviously suppressed the expression of the JAK/STAT signaling pathway as well as the related proteins(p-JAK2 and p-STAT3) in both DN rats and cells. Conclusions: The overexpression of SOCS2 can decrease the expression of inflammatory cytokines and fibrosis related proteins in DN rats and cells, and meanwhile suppress the activation of JAK/STAT signaling pathway mediated by DN.

  11. Molecular characterization and immune response to lipopolysaccharide (LPS) of the suppressor of cytokine signaling (SOCS)-1, 2 and 3 genes in Nile tilapia (Oreochromis niloticus).

    Science.gov (United States)

    Liu, Cai-Zhi; He, An-Yuan; Chen, Li-Qiao; Limbu, Samwel Mchele; Wang, Ya-Wen; Zhang, Mei-Ling; Du, Zhen-Yu

    2016-03-01

    Suppressor of cytokine signaling (SOCS) proteins are inverse feedback regulators of cytokine and hormone signaling mediated by the Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway that are involved in immunity, growth and development of organisms. In the present study, three SOCS genes, SOCS-1, SOCS-2 and SOCS-3, were identified in an economically important fish, Nile tilapia (Oreochromis niloticus) referred to as NtSOCS-1, NtSOCS-2 and NtSOCS-3. Multiple alignments showed that, the three SOCS molecules share highly conserved functional domains, including the SRC homology 2 (SH2) domain, the extended SH2 subdomain (ESS) and the SOCS box with others vertebrate counterparts. Phylogenetic analysis indicated that NtSOCS-1, 2 and 3 belong to the SOCS type II subfamily. Whereas NtSOCS-1 and 3 showed close evolutionary relationship with Perciformes, NtSOCS-2 was more related to Salmoniformes. Tissue specific expression results showed that, NtSOCS-1, 2 and 3 were constitutively expressed in all nine tissues examined. NtSOCS-1 and 3 were highly expressed in immune-related tissues, such as gills, foregut and head kidney. However, NtSOCS-2 was superlatively expressed in liver, brain and heart. In vivo, NtSOCS-1 and 3 mRNA levels were up-regulated after lipopolysaccharide (LPS) challenge while NtSOCS-2 was down-regulated. In vitro, LPS stimulation increased NtSOCS-3 mRNA expression, however it inhibited the transcription of NtSOCS-1 and 2. Collectively, our findings suggest that, the NtSOCS-1 and 3 might play significant role(s) in innate immune response, while NtSOCS-2 may be more involved in metabolic regulation.

  12. Molecular characterization and immune response to lipopolysaccharide (LPS) of the suppressor of cytokine signaling (SOCS)-1, 2 and 3 genes in Nile tilapia (Oreochromis niloticus).

    Science.gov (United States)

    Liu, Cai-Zhi; He, An-Yuan; Chen, Li-Qiao; Limbu, Samwel Mchele; Wang, Ya-Wen; Zhang, Mei-Ling; Du, Zhen-Yu

    2016-03-01

    Suppressor of cytokine signaling (SOCS) proteins are inverse feedback regulators of cytokine and hormone signaling mediated by the Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway that are involved in immunity, growth and development of organisms. In the present study, three SOCS genes, SOCS-1, SOCS-2 and SOCS-3, were identified in an economically important fish, Nile tilapia (Oreochromis niloticus) referred to as NtSOCS-1, NtSOCS-2 and NtSOCS-3. Multiple alignments showed that, the three SOCS molecules share highly conserved functional domains, including the SRC homology 2 (SH2) domain, the extended SH2 subdomain (ESS) and the SOCS box with others vertebrate counterparts. Phylogenetic analysis indicated that NtSOCS-1, 2 and 3 belong to the SOCS type II subfamily. Whereas NtSOCS-1 and 3 showed close evolutionary relationship with Perciformes, NtSOCS-2 was more related to Salmoniformes. Tissue specific expression results showed that, NtSOCS-1, 2 and 3 were constitutively expressed in all nine tissues examined. NtSOCS-1 and 3 were highly expressed in immune-related tissues, such as gills, foregut and head kidney. However, NtSOCS-2 was superlatively expressed in liver, brain and heart. In vivo, NtSOCS-1 and 3 mRNA levels were up-regulated after lipopolysaccharide (LPS) challenge while NtSOCS-2 was down-regulated. In vitro, LPS stimulation increased NtSOCS-3 mRNA expression, however it inhibited the transcription of NtSOCS-1 and 2. Collectively, our findings suggest that, the NtSOCS-1 and 3 might play significant role(s) in innate immune response, while NtSOCS-2 may be more involved in metabolic regulation. PMID:26820103

  13. SoCRocket: A Virtual Platform for SoC Design

    Science.gov (United States)

    Fossati, Luca; Schuster, Thomas; Meyer, Rolf; Berekovic, Mladen

    2013-08-01

    how SoCRocket was used to optimize the design of a LEON3-based SoC targeted to the execution of an implementation of the CCSDS standard n.123 for the lossless compression of hyperspectral images.

  14. Expression of suppressor of cytokine signaling 1 (SOCS1 impairs viral clearance and exacerbates lung injury during influenza infection.

    Directory of Open Access Journals (Sweden)

    Keer Sun

    2014-12-01

    Full Text Available Suppressor of cytokine signaling (SOCS proteins are inducible feedback inhibitors of cytokine signaling. SOCS1-/- mice die within three weeks postnatally due to IFN-γ-induced hyperinflammation. Since it is well established that IFN-γ is dispensable for protection against influenza infection, we generated SOCS1-/-IFN-γ-/- mice to determine whether SOCS1 regulates antiviral immunity in vivo. Here we show that SOCS1-/-IFN-γ-/- mice exhibited significantly enhanced resistance to influenza infection, as evidenced by improved viral clearance, attenuated acute lung damage, and consequently increased survival rates compared to either IFN-γ-/- or WT animals. Enhanced viral clearance in SOCS1-/-IFN-γ-/- mice coincided with a rapid onset of adaptive immune responses during acute infection, while their reduced lung injury was associated with decreased inflammatory cell infiltration at the resolution phase of infection. We further determined the contribution of SOCS1-deficient T cells to antiviral immunity. Anti-CD4 antibody treatment of SOCS1-/-IFN-γ-/- mice had no significant effect on their enhanced resistance to influenza infection, while CD8+ splenocytes from SOCS1-/-IFN-γ-/- mice were sufficient to rescue RAG1-/- animals from an otherwise lethal infection. Surprisingly, despite their markedly reduced viral burdens, RAG1-/- mice reconstituted with SOCS1-/-IFN-γ-/- adaptive immune cells failed to ameliorate influenza-induced lung injury. In conclusion, in the absence of IFN-γ, the cytoplasmic protein SOCS1 not only inhibits adaptive antiviral immune responses but also exacerbates inflammatory lung damage. Importantly, these detrimental effects of SOCS1 are conveyed through discrete cell populations. Specifically, while SOCS1 expression in adaptive immune cells is sufficient to inhibit antiviral immunity, SOCS1 in innate/stromal cells is responsible for aggravated lung injury.

  15. 嵌入式平台ARM-uClinux的构建与应用开发%The Research and Application of Embedded System Based on ARM & uClinux

    Institute of Scientific and Technical Information of China (English)

    黄勋; 唐慧强

    2006-01-01

    介绍了ARM处理器以及嵌入式操作系统uClinux的特点.将uClinux操作系统移植到ARM7上,构建了ARM-uClinux嵌入式平台.以此为基础完成了一种车载GPS接收机的软硬件设计.GP2015作为接收机的射频前端,内嵌ARM7核的GP4020作为接收机的数字基带处理器.此接收机消除以往处理器数据处理的瓶颈效应,解决了体积小,功耗低的问题.

  16. Enhancement of leptin receptor signaling by SOCS3 deficiency induces development of gastric tumors in mice.

    Science.gov (United States)

    Inagaki-Ohara, K; Mayuzumi, H; Kato, S; Minokoshi, Y; Otsubo, T; Kawamura, Y I; Dohi, T; Matsuzaki, G; Yoshimura, A

    2014-01-01

    Leptin acts on its receptor (ObR) in the hypothalamus to inhibit food intake and energy expenditure. Leptin and ObR are also expressed in the gastrointestinal tract; however, the physiological significance of leptin signaling in the gut remains uncertain. Suppressor of cytokine signaling 3 (SOCS3) is a key negative feedback regulator of ObR-mediated signaling in the hypothalamus. We now show that gastrointestinal epithelial cell-specific SOCS3 conditional knockout (T3b-SOCS3 cKO) mice developed gastric tumors by enhancing leptin production and the ObRb/signal transducer and activator of transcription 3 (STAT3) signaling pathway. All T3b-SOCS3 cKO mice developed tumors in the stomach but not in the bowels by 2 months of age, even though the SOCS3 deletion occurred in both the epithelium of stomach and bowels. The tumors developed in the absence of the inflammatory response and all cKO mice died within 6 months. These tumors displayed pathology and molecular alterations, such as an increase in MUC2 (Mucin 2, oligomeric mucus/gel-forming) and TFF3 (trefoil factor 3), resembling human intestinal-type gastric tumors. Administration of antileptin antibody to T3b-SOCS3 cKO mice reduced hyperplasia of gastric mucosa, which is the step of the initiation of gastric tumor. These data suggest that SOCS3 is an antigastric tumor gene that suppresses leptin overexpression and ObRb/STAT3 hyperactivation, supporting the hypothesis that the leptin/ObRb/STAT3 axis accelerates tumorigenesis and that it may represent a new therapeutic target for the treatment of gastric cancer.

  17. 基才ARM和DS18820的温度监测系统%Temperature monitoring system based on ARM and DS18B20

    Institute of Scientific and Technical Information of China (English)

    王文; 王直

    2011-01-01

    Based on the ARM and DS18B20 temperature monitoring system use ARM as the data acquisition unit and digital temperature sensor DS18B20 as the temperature detection element. The overall system design, hardware design and software block diagram are given. The digital filtering of measured data is the average median filtering method.Meanwhile, the acquisition system connects the host computer via the serial port in order to achieve the network monitoring function.%基于ARM和DS18820的温度监测系统使用SAMSUNG公司的32位ARM微控制器S3C2440作为数据采集单元,数字温度传感器DS18820作为温度检测元件。给出了系统的总体设计方案、硬件设计及软件框图。对测得的数据采用防脉冲干扰平均滤波法进行数字滤波。同时,通过串行总线完成了采集系统与上位计算机的连接,实现了采集系统的网络化监测功能。

  18. Design of Long-Distance Monitoring System base on ARM and Zigbee%基于ARM的Zigbee远程监控系统设计

    Institute of Scientific and Technical Information of China (English)

    赵志强; 李建才; 陆川

    2014-01-01

    The paper presents the design of an remote monitoring system in Zigbee wireless sensor network based on ARM1 1 Processor.The system can convert the data between Zigbee net and server and user.Both the design of hardware scheme and the programming method of software are introduced.This system can be used for general purposes,such as logistics management.%文中设计了一个基于ARM11处理器的Zigbee 无线传感器网络的远程监控系统,用来完成Zigbee 网络和用户与服务器之间数据的远程传输。给出了该监控系统的硬件方案设计和主要软件编程思路。该系统具有较好的通用性,可用于物流管理。

  19. Embeded Web Server Platform Design Based on Android and ARM%基于Android和ARM的嵌入式web服务器平台设计

    Institute of Scientific and Technical Information of China (English)

    季云峰

    2012-01-01

    首先对Android嵌入式操作系统、ARM嵌入式处理器做了简单的介绍,在此基础上给出了Android操作系统在Friendly ARM公司的mini2440开发板上的详细移植过程,然后通过对嵌入式web服务器BOA重新修改和编译,实现了BOA到Android2.0系统的移植,由此实现了基于Android和ARM的嵌入式Web服务器平台的构建。%Firstly,this paper makes the brief introductions of Android and ARM,then provides the detailed steps of the transplantation of Android2.0 to the development board of mini2440,after that,gives the solution of transplanting embedded web server(BOA) to Android2.0,and finally finishes the implementation of embedded web server platform based on android and ARM.

  20. 荩于ARM的车载CAN总线智能终端设计%Design of Intelligent Terminal of Vehicle-mounted CAN Bus Based on ARM

    Institute of Scientific and Technical Information of China (English)

    王保和

    2011-01-01

    介绍了一种以基于ARM9内核的S3C2440微处理器为硬件核心的嵌入式Linux车载CAN总线智能节点的设计方法,详细描述了CAN总线控制器MCP2510的特点以及接口电路,同时给出了嵌入式Linux下的底层驱动程序,最后给出了利用Qt开发的图形用户界面。%An embedded Linux vehicle-mounted CAN bus intelligent node was designed, which took ARM9-based S3C2440 microprocessor as hardware core. The features of CAN bus controller MCP2510 and its interface circuit are in- troduced, an embedded Linux low-level drivers is proposed, and the graphical user interface developed by Qt is put forward.

  1. Design and implementation of GPS embedded receiver based on ARM integrated circuit board%内置ARM板卡GPS接收机设计与实现

    Institute of Scientific and Technical Information of China (English)

    杜娟; 马辉; 刘星; 刘丙申

    2012-01-01

    随着信息化科技的不断发展,GPS在很多领域得到了广泛的应用.本文以GPS系统为蓝图,用ARM板卡技术作为平台设计了嵌入式GPS接收机,并对接收的动态试验数据精度进行分析,证明了基于ARM板卡的嵌入式GPS接收机在GPS系统中应用的可行性.%GPS is applied widely in more fields with the developing of information science and technology. In this paper, the system of multi-objective GPS was taken for a blueprint and ARM integrated circuit board technology was taken as the platform, GPS embedded receiver was designed. And the precision of dynamic test data received was analyzed. The results showed that it was feasible that GPS embedded receiver based on ARM integrated circuit board technology was applied in the GPS system.

  2. Optimization-Based Design of a Small Pneumatic-Actuator-Driven Parallel Mechanism for a Shoulder Prosthetic Arm with Statics and Spatial Accessibility Evaluation

    Directory of Open Access Journals (Sweden)

    Masashi Sekine

    2013-07-01

    Full Text Available Human arms undertake most tasks in the activities of daily living (ADLs. When designing shoulder prostheses for high‐level upper‐limb amputees, we should consider not only how to realize high degrees of freedom under weight and shape constraints but also the user’s individual task space in daily life. An appropriate mechanical structure that can make full use of state‐of‐the‐art actuators and a scheme to optimize the structure’s configuration to match users’ spatial access and manipulability requirements are essential. In our previous research, a small pneumatic‐actuator‐driven parallel mechanism was studied as a shoulder prosthetic arm. In this paper, a systematic procedure is proposed to design the mechanism for a shoulder prosthesis considering force and spatial accessibility. This procedure includes ADL measurements to obtain the task spaces for individual subjects, indexes to evaluate the force and spatial accessibility and an optimization process based on kinematic and statics models. With this approach, the parallel mechanism was optimized for one important ADL task group, considering the trade‐off between its required force and working space. Moreover, it was confirmed that the proposed design procedure could find solutions for various spatial specifications. That is, the approach could be used for individualized shoulder prosthesis design.

  3. 基于ARM的平板电脑硬件平台设计%Design of tablet PC hardware platform based on ARM

    Institute of Scientific and Technical Information of China (English)

    王茜

    2012-01-01

    为了给学生搭建专业实践的平台,设计了基于ARM的平板电脑硬件平台系统,供学生开发各种应用软件。该系统以三星公司的ARM处理器S5PV210为控制核心,采用核心板加扩展板的设计方案,结合各种外围设备完成了相关的设计。目前,该平台上已成功运行了Android操作系统,并交由学生进行应用软件的开发。%In order to offer the students the practice platform, for students to develop application programs. The system takes the the application of main board and expansion board, and uses kinds cessfully running on the platform, and students begin to develop the this paper designs an ARM-based tablet PC hardware system Samsung's ARM processor S5PV210 as the core control, with of peripheral equipments. Currently, Android OS has been suc-application programs.

  4. Crystal structure, characterization and magnetic properties of a 1D copper(II) polymer incorporating a Schiff base with carboxylate side arm

    Indian Academy of Sciences (India)

    SHYAMAPADA SHIT; MADHUSUDAN NANDY; CORRADO RIZZOLI; CÉDRIC DESPLANCHES; SAMIRAN MITRA

    2016-06-01

    A new 1D polymeric copper(II) complex [{Cu(L)$(CF_{3}COO)}2]_{n}$ has been synthesized using apotentially tetradentate Schiff base ligand, HL, ((E)-2-((pyridin-2-yl)methyleneamino)-5-chlorobenzoic acid)and characterized by different spectroscopic methods. Single crystal X-ray structural characterization revealsthat the side arm carboxylate group of the coordinated Schiff base exhibits a $μ_{1,3}$ -bridging mode and connectsthe neighbouring copper(II) ions leading to a zigzag 1D chain structure where the copper(II) ions displaydistorted square pyramidal geometries. Variable temperature magnetic susceptibility measurement reveals aweak antiferromagnetic exchange (J = −0.47±0.01 $cm_{−1}) prevails between copper(II) ions in the chainmediated by the bridging carboxylate group, is also supported by the room temperature EPR spectral study.Electrochemical property of the complex is also reported.

  5. Tolerogenic nanoparticles inhibit T cell-mediated autoimmunity through SOCS2.

    Science.gov (United States)

    Yeste, Ada; Takenaka, Maisa C; Mascanfroni, Ivan D; Nadeau, Meghan; Kenison, Jessica E; Patel, Bonny; Tukpah, Ann-Marcia; Babon, Jenny Aurielle B; DeNicola, Megan; Kent, Sally C; Pozo, David; Quintana, Francisco J

    2016-06-21

    Type 1 diabetes (T1D) is a T cell-dependent autoimmune disease that is characterized by the destruction of insulin-producing β cells in the pancreas. The administration to patients of ex vivo-differentiated FoxP3(+) regulatory T (Treg) cells or tolerogenic dendritic cells (DCs) that promote Treg cell differentiation is considered a potential therapy for T1D; however, cell-based therapies cannot be easily translated into clinical practice. We engineered nanoparticles (NPs) to deliver both a tolerogenic molecule, the aryl hydrocarbon receptor (AhR) ligand 2-(1'H-indole-3'-carbonyl)-thiazole-4-carboxylic acid methyl ester (ITE), and the β cell antigen proinsulin (NPITE+Ins) to induce a tolerogenic phenotype in DCs and promote Treg cell generation in vivo. NPITE+Ins administration to 8-week-old nonobese diabetic mice suppressed autoimmune diabetes. NPITE+Ins induced a tolerogenic phenotype in DCs, which was characterized by a decreased ability to activate inflammatory effector T cells and was concomitant with the increased differentiation of FoxP3(+) Treg cells. The induction of a tolerogenic phenotype in DCs by NPs was mediated by the AhR-dependent induction of Socs2, which resulted in inhibition of nuclear factor κB activation and proinflammatory cytokine production (properties of tolerogenic DCs). Together, these data suggest that NPs constitute a potential tool to reestablish tolerance in T1D and potentially other autoimmune disorders.

  6. Tolerogenic nanoparticles inhibit T cell-mediated autoimmunity through SOCS2.

    Science.gov (United States)

    Yeste, Ada; Takenaka, Maisa C; Mascanfroni, Ivan D; Nadeau, Meghan; Kenison, Jessica E; Patel, Bonny; Tukpah, Ann-Marcia; Babon, Jenny Aurielle B; DeNicola, Megan; Kent, Sally C; Pozo, David; Quintana, Francisco J

    2016-01-01

    Type 1 diabetes (T1D) is a T cell-dependent autoimmune disease that is characterized by the destruction of insulin-producing β cells in the pancreas. The administration to patients of ex vivo-differentiated FoxP3(+) regulatory T (Treg) cells or tolerogenic dendritic cells (DCs) that promote Treg cell differentiation is considered a potential therapy for T1D; however, cell-based therapies cannot be easily translated into clinical practice. We engineered nanoparticles (NPs) to deliver both a tolerogenic molecule, the aryl hydrocarbon receptor (AhR) ligand 2-(1'H-indole-3'-carbonyl)-thiazole-4-carboxylic acid methyl ester (ITE), and the β cell antigen proinsulin (NPITE+Ins) to induce a tolerogenic phenotype in DCs and promote Treg cell generation in vivo. NPITE+Ins administration to 8-week-old nonobese diabetic mice suppressed autoimmune diabetes. NPITE+Ins induced a tolerogenic phenotype in DCs, which was characterized by a decreased ability to activate inflammatory effector T cells and was concomitant with the increased differentiation of FoxP3(+) Treg cells. The induction of a tolerogenic phenotype in DCs by NPs was mediated by the AhR-dependent induction of Socs2, which resulted in inhibition of nuclear factor κB activation and proinflammatory cytokine production (properties of tolerogenic DCs). Together, these data suggest that NPs constitute a potential tool to reestablish tolerance in T1D and potentially other autoimmune disorders. PMID:27330188

  7. Real-time Face Detection and Tracking Using Haar Classifier on SoC

    Directory of Open Access Journals (Sweden)

    Rajashree Tripathy

    2014-03-01

    Full Text Available In this paper we intend to Implement a real time Face detection and tracking the head poses position from high definition video using Haar Classifier through Raspberry Pi BCM2835 CPU processor which is a combination of SoC with GPU based Architecture. OV5647 CMOS Image sensor with 5-megapixel used for obtaining high definition video H.264 video data via GPU’s hardware video decoder to improve the playback of H.264 Video data supporting from 1080p at 30fps with complete user control over formatting and output data transfer also supporting with 720p/60HD video in full field of View(FOV. SimpleCV and OpenCV libraries are used for face detection and tracking the head poses position. The experimental result computed by using computer vision SimpleCV and OpenCV framework libraries along with above mentioned hardware results were obtained through of 30 fps under 1080p resolutions for higher accuracy and speediness for face detection and tracking the head poses position.

  8. 基于ARM7的新型开放式多功能医用信号仪的研制%Development of a Novel Open Multi-Function Instrument Based on ARM7 for Generating Medical Signal

    Institute of Scientific and Technical Information of China (English)

    陈龙聪; 刘改琴; 熊兴良; 高斌; 邓世雄

    2011-01-01

    目的 现有的常用信号发生器或生理信号发生器不能同时输出常用信号和模拟生理信号,本文提出一种新型开放式多功能医用信号仪,用于检测各种生理信号,听取不同频率、不同信号的声音及输出常用信号等.方法 该仪器以STM32F103RF和高性能集成芯片MAX038为核心.此医用信号仪包括硬件和软件两部分,其中硬件含有ARM7单片机控制单元、按钮组输入单元、数据存储单元等12个单元,软件用C语言编写,并采用keil C进行编译.结果 该仪器不仅能输出常用的正弦、方波、三角波、锯齿、矩形信号,还能输出医学中常用的多种生理信号如心电、脉搏波等,且信号波形频率、幅度、类型、波形均采用直观的LCD液晶显示.此外,该仪器具有一个高驱动能力的接口,可直接驱动耳机等,以方便对人耳频率特性和人体阻抗特性的研究和教学.同时,为了便于使用一般示波器能观察各种生理信号,对同一种生理信号可输出不同的频率.结论 本仪器使用方便,可广泛应用于科研、教学、测试和仪器维修等.%Objective To overcome shortages of available common multi-function physiological signal generators, which can not output the common and physiological signals simultaneously, a novel opening multifunction generator for physiological signal was introduced in this paper so that we can observe various physiological signals, hear the sound of different frequency or type signals, and obtain common signals. Methods Based on STM32F103RF microcomputer and the high performance signal chip MAX038, this instrument includes two parts, hardware and software. Its hardware, including microcontroller ARM7, keyboard, data memory and soon, was divided into twelve units. And complied by Keil C Vision3, the software was programmed by C language. Results This instrument output not only common types of signals, such as sine, square, triangle and sawtooth signals

  9. 基于ARM7的多功能离子导入治疗仪的设计%Design of Multi-functional Iontophoresis Therapeutic Instrument Based on ARM7

    Institute of Scientific and Technical Information of China (English)

    卫亚博; 王军敏; 宋璐

    2012-01-01

    This paper aims to design a kind of new-type multi-functional ions into instrument. It overcomes the shortcomings of single output frequency or be limited to a particular frequency band of most current instruments and realizes different kinds of drug ions importing, maximizes the curative effect of drug ion. Methods: Using the LPC2138 ARM7 core as main control chip, using the AD9834 based on DDS technology as waveform signal chip, after amplifying by power amplifier LF347,the system can realize the independent regulation four channel outputs. Using LCD TFT as dynamic display device, using the API8108A as voice chip, the system can realize dynamic display and voice synchronous told. Results: The output waveform of the system shows that the system realizes multiple frequency and various waveform output, and output amplitude and frequency adjustable, and can realize two treatment function of electric ion into therapy and interference elect oshock therapy through treatment mode choice. Conclusions: The whole system has the advantage of simple circuit structure, low cost, safe and reliable, stable performance and high precision. The system has high human-computer interaction ability and operation is simple. Specially designed electrode loss detection circuit can protect patients by automatic detecting whether the contact of electrode and human body is reliable and prompting user for inspection.%目的:设计一种频率可调的新型多功能离子导入治疗仪,使之能够克服目前国内大部分离子导入仪输出频率单一,或者仅仅局限于某一频段的缺点,可实现不同种类药物离子的导入,最大限度地发挥药物的疗效.方法:采用以ARM7为内核的LPC2138作为主控芯片,使用基于DDS技术的AD9834作为波形信号产生芯片,经过功率放大器LF347放大后,系统可实现独立调节的四通道输出.使用LCD TFT真彩屏作为显示器件,API8108A作为语音芯片,具有动态显示和语音同步告知等功能.

  10. Design and Research of Intelligent Control System for Fruit and Vegetable Packaging Machine-Based on Embedded ARM%果蔬包装机智控系统的设计与研究-基于嵌入式 ARM

    Institute of Scientific and Technical Information of China (English)

    罗成; 刘志刚

    2016-01-01

    -tant.The AT91SAM9263 processor was used to design and research of the fruit and vegetable packing machine intelligent control system , the mechanical and electronic , intelligent test and a photoelectric sensor on various subjects based on ARM embedded .With a high degree of automation , high technology content , better accuracy and stability , high by fea-tures,it can greatly improve the quality of packaging , complete on different kinds of products packaging with strong adapt-ability .It not only improves the efficiency of packaging operations , but also savse the economic costand for farmers .

  11. Potential fate of SOC eroded from natural crusted soil surface under simulated wind driven storm

    Science.gov (United States)

    Xiao, Liangang; Fister, Wolfgang; Greenwood, Philip; Hu, Yaxian; Kuhn, Nikolaus J.

    2016-04-01

    Improving the assessment of the impact of soil erosion on carbon (C) cycling requires a better understanding of the redistribution of eroded sediment and associated soil organic carbon (SOC) across agricultural landscapes. Recent studies conducted on dry-sieved aggregates in the laboratory demonstrated that aggregation can profoundly skew SOC redistribution and its subsequent fate by accelerating settling velocities of aggregated sediment compared to mineral grains, which in turn can increase SOC mineralization into greenhouse gases. However, the erodibility of the soil in the field is more variable than in the laboratory due to tillage, crus formation, drying-wetting and freeze-thaw cycles, and biological effects. This study aimed to investigate the potential fate of the SOC eroded from naturally developed soil surface and to compare the observations with those made in the laboratory. Simulated, short, high intensity wind driven storms were conducted on a crusted loam in the field. The sediments were fractionated with a settling tube according to their potential transport distances. The soil mass, SOC concentration and cumulative 80-day CO2 emission of each fraction were identified. The results show: 1) 53% of eroded sediment and 62% of eroded SOC from the natural surface in the field would be deposited across landscapes, which is six times and three times higher compared to that implied by mineral grains, respectively; 2) the preferential deposition of SOC-rich fast-settling sediment potentially releases approximately 50% more CO2 than the same layer of the non-eroded soil; 3) the respiration of the slow-settling fraction that is potentially transported to the aquatic systems was much more active compared to the other fractions and the bulk soil. Our results confirm in general the conclusions drawn from laboratory and thus demonstrate that aggregation can affect the redistribution of sediment associated SOC under field conditions, including an increase in

  12. Key KdSOC1 gene expression profiles during plantlet morphogenesis under hormone, photoperiod, and drought treatments.

    Science.gov (United States)

    Liu, C; Zhu, C; Zeng, H M

    2016-01-01

    Kalanchoe daigremontiana utilizes plantlet formation between its zigzag leaf margins as its method of asexual reproduction. In this study, K. daigremontiana SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (KdSOC1), a key intermediate in the transition from vegetative to asexual growth, was cloned. Furthermore, its expression profiles during plantlet formation under different environmental and hormone induction conditions were analyzed. The full-KdSOC1 cDNA sequence length was 1410 bp with 70% shared homology with Carya cathayensis SOC1. The conserved domain search of KdSOC1 showed the absence of I and C domains, which might indicate novel biological functions in K. daigremontiana. The full-KdSOC1 promoter sequence was 1401 bp long and contained multiple-hormone-responsive cis-acting elements. Hormone induction assays showed that gibberellins and salicylic acid mainly regulated KdSOC1 expression. The swift change from low to high KdSOC1 expression levels during long-day induction was accompanied by the rapid emergence of plantlets. Drought stress stimulated KdSOC1 expression in leaves both with and without plantlet formation. Together, the results suggested that KdSOC1 was closely involved in environmental stimulation signal perception and the transduction of K. daigremontiana plantlet formation. Therefore, future identification of KdSOC1 functions might reveal key information that will help elucidate the transition network between embryogenesis and organogenesis during plantlet formation. PMID:26909971

  13. 基于ARM的手机位置采集及跟踪研究%Research of mobile phone location acquisition and tracking based on ARM

    Institute of Scientific and Technical Information of China (English)

    包理群; 吕林霞; 李祥林

    2016-01-01

    In view of the demand of real-time location data acquisition and location tracking for spe-cial groups, GPS location data acquisition algorithm and the update algorithm for data acquisition interval are studied in this paper. The mobile location tracking system based on ARM and Google Maps are de-signed and implemented. The users take GPS smart phones with them when they go out. The guardian can check their location in real-time on the map through portable embedded terminals. It send out alarm in-formation when users are close to or enter the danger zone. It can be widely used in the elderly, chil-dren, the disabled and other special groups of protection. The embedded location information database is created based on ARM platform, which is used to store all the time and location data when users are not at home. It can provide data support for big data research based on the smart phone positioning data. Ex-periments tests the reproducibility of the GPS data, the performance of location information database and ARM position tracking system,and verified the effectiveness of the algorithm and the feasibility of the de-sign.%针对特殊群体的实时位置跟踪需求,研究了GPS位置数据获取算法和数据采集时间间隔更新算法,设计实现了基于ARM和Google Maps的手机位置跟踪系统. 用户只需随身携带GPS手机,监护人即可通过嵌入式移动终端在地图上实时查看其位置信息,并在用户接近和进入危险区域时报警,可应用于老人、小孩、残疾人等特殊群体的保护. 基于ARM的嵌入式位置信息数据库保存了用户出行数据,为智能手机定位的大数据研究提供支持. 通过对GPS数据重复性、位置信息数据库以及ARM位置跟踪系统的性能测试,验证了算法的有效性及设计思路的可行性.

  14. Effects of SOC-dependent electrolyte viscosity on performance of vanadium redox flow batteries

    International Nuclear Information System (INIS)

    Highlights: • The correlations of electrolyte viscosity and SOC are obtained. • Effect of SOC-dependent electrolyte viscosity is considered in this model. • This model enables a more realistic simulation of variable distributions. • It provides accurate estimations of pumping work and system efficiency. - Abstract: The viscosity of the electrolyte in vanadium redox flow batteries (VRFBs) varies during charge and discharge as the concentrations of acid and vanadium ions in the electrolyte continuously change with the state of charge (SOC). In previous VRFB models, however, the electrolyte has been treated as a constant-viscosity solution. In this work, a mass-transport and electrochemical model taking account of the effect of SOC-dependent electrolyte viscosity is developed. The comparison between the present model and the model with the constant-viscosity simplification indicates that the consideration of the SOC-dependent electrolyte viscosity enables (i) a more realistic simulation of the distributions of overpotential and current density in the electrodes, and (ii) more accurate estimations of pumping work and the system efficiency of VRFBs

  15. Topical use of a silymarin-based preparation to prevent radiodermatitis. Results of a prospective study in breast cancer patients

    Energy Technology Data Exchange (ETDEWEB)

    Becker-Schiebe, Martina; Hoffmann, Wolfgang [Klinikum Braunschweig (Germany). Klinik fuer Radioonkologie und Strahlentherapie; Mengs, Ulrich; Schaefer, Margitta [Rottapharm/Madaus, Koeln (Germany). Research and Development; Bulitta, Michael [CRM Biometrics GmbH, Rheinbach (Germany)

    2011-08-15

    More than 80% of patients with breast cancer undergoing postsurgical radiotherapy (RT) will develop radiodermatitis and approximately 10% of these patients show grade 3 lesions. Side effects may reduce the patient's compliance and can be limiting factors to follow RT protocols. Therefore, there is a high need for more effective prophylactic treatments. In this study, a silymarin-based cream (Leviaderm {sup registered}) was tested in comparison to our standard of care (SOC) at the involved site. A total of 101 patients were evaluated after breast-conserving surgery followed by RT with 50.4 Gy plus boost 9-16 Gy. Of these, 51 patients were treated with the silymarin-based cream. In addition, 50 patients were documented receiving a panthenol-containing cream interventionally, if local skin lesions occurred. The acute skin reactions were classified according to the RTOG and VAS (Visual Analogue Scale) scores. The median time to toxicity was prolonged significantly with silymarin-based cream (45 vs. 29 days (SOC), p < 0.0001). Only 9.8% of patients using silymarin-based cream showed grade 2 toxicity in week 5 of RT in comparison to 52% with SOC. At the end of RT, 23.5% of patients in the silymarin-based study group developed no skin reactions vs. 2% with SOC, while grade 3 toxicity occurred only in 2% in the silymarin-based arm compared to 28% (SOC). Silymarin-based cream Leviaderm {sup registered} may be a promising and effective treatment for the prevention of acute skin lesions caused by RT of breast cancer patients. To confirm the results of this nonrandomized, observational trial, this component should be tested in larger multicenter studies in this setting. (orig.)

  16. Realistically Rendering SoC Traffic Patterns with Interrupt Awareness

    DEFF Research Database (Denmark)

    Angiolini, Frederico; Mahadevan, Sharkar; Madsen, Jan;

    2005-01-01

    generate realistic test traffic. This paper presents a selection of applications using interrupt-based synchronization; a reference methodology to split such applications in execution subflows and to adjust the overall execution stream based upon hardware events; a reactive simulation device capable of...

  17. 基于ARM温度检测系统设计%The Design of Temperature Measuring System Based on ARM

    Institute of Scientific and Technical Information of China (English)

    王双友

    2012-01-01

      本设计以ARM S3C2410为核心的温度检测系统。温度数据由温度芯片DS18B20采集,并以数字信号的方式传送给S3C2410处理芯片。详细论述了该系统的硬件组成和软件设计,实验证明本设计提高了系统的稳定性和可靠性。%  It gives a new type of Temperature Measuring System equipped with Samsung S3C2410. Chip DS18B20 is responsible for collecting temperature data, which was transmitted to the chip of S3C2410 in the way of digital signal. The hardware composition and software design of the system were discussed in detail. The experimental results indicate that the design improves the system stability and reliability.

  18. Investigation of an efficient short-scan C-arm reconstruction method with radon-based redundancy handling

    Science.gov (United States)

    Dennerlein, Frank; Kunze, Holger

    2014-03-01

    The short-scan Feldkamp David Kress (FDK) method for C-arm CT reconstruction involves a heuristic raybased weighting scheme to handle data redundancies. This scheme is known to be approximate under general circumstances and it often creates low frequency image artifacts in regions away from the central axial plane. Alternative algorithms, such as the one proposed by Defrise and Clack (DC),1 can handle data redundancy in a theoretically exact manner and thus notably improve image quality. The DC algorithm, however, is computationally more complex than FDK, as it requires a shift-variant 2D filtering of the data instead of a efficient 1D filtering. In this paper, a modification of the original DC algorithm is investigated, which applies the efficient FDK filtering scheme whereever possible and the DC filtering scheme only where it is required. This modification leads to a more efficient implementation of the DC algorithm, in which filtering effort can be reduced by up to about 70%, dependent on the specific geometry set-up. This gain in computation speed makes the DC method even more attractive for use in an interventional environment, where fast and interactive X-ray imaging is a crucial requirement.

  19. Functional SOCS1 polymorphisms are associated with variation in obesity in whites

    DEFF Research Database (Denmark)

    Gylvin, T; Ek, J; Nolsøe, R.;

    2009-01-01

    of both the rs33977706 and the rs243330 (-1656G > A) variants to obesity were found (p = 0.047 and p = 0.015) respectively. The rs33977706 affected both binding of a nuclear protein to and the transcriptional activity of the SOCS1 promoter, indicating a relationship between this polymorphism and gene......AIMS/HYPOTHESIS: The suppressor of cytokine signalling 1 (SOCS1) is a natural inhibitor of cytokine and insulin signalling pathways and may also play a role in obesity. In addition, SOCS1 is considered a candidate gene in the pathogenesis of both type 1 diabetes (T1D) and type 2 diabetes (T2D...... patients (n = 1430), glucose tolerant first-degree relatives of T2D patients (n = 212) and normal glucose tolerant (NGT) subjects. The rs33977706 polymorphism (-820G > T) was associated with a lower body mass index (BMI) (p = 0.004). In a second study (n = 4625 NGT subjects), significant associations...

  20. AGL24 acts in concert with SOC1 and FUL during Arabidopsis floral transition.

    Science.gov (United States)

    Torti, Stefano; Fornara, Fabio

    2012-10-01

    Arabidopsis plants flower in response to long days (LDs). Exposure of leaves to inductive day lengths activates expression of FLOWERING LOCUS T (FT) protein which moves to the shoot apical meristem (SAM) to induce developmental reprogramming. SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1) and FRUITFULL (FUL) are induced by FT at the apex. We previously screened the SAM for mRNAs of genes required to promote the floral transition in response to photoperiod, and conducted detailed expression and functional analyses on several putative candidates. Here, we show that expression of AGAMOUS-LIKE 24 (AGL24) is detected at the SAM under SD conditions and increases upon exposure to LDs. Mutations in AGL24 further delay flowering of a soc1 ful double mutant, suggesting that flowering is controlled by AGL24 partly independently of SOC1 and FUL.

  1. Regulation of pancreatic beta-cell mass and proliferation by SOCS-3

    DEFF Research Database (Denmark)

    Lindberg, K; Rønn, S G; Tornehave, D;

    2005-01-01

    Growth hormone and prolactin are important growth factors for pancreatic beta-cells. The effects exerted by these hormones on proliferation and on insulin synthesis and secretion in beta-cells are largely mediated through the Janus kinase (JAK)/signal transducer and activator of transcription (STAT......) signaling pathway. Suppressors of cytokine signaling (SOCS) proteins are specific inhibitors of the JAK/STAT pathway acting through a negative-feedback loop. To investigate in vivo effects of SOCS-3 in growth hormone (GH)/prolactin signaling in beta-cells we generated transgenic mice with beta......-cell-specific overexpression of SOCS-3. The relative beta-cell proliferation and volume in the mice were measured by morphometry. Beta-cell volume of transgenic female mice was reduced by over 30% compared with beta-cell volume in wild-type female mice. Stimulation of transgenic islets in vitro with GH showed a reduced...

  2. Locomotive Alarm Outfire Monitoring System Based on ARM%基于ARM的机车报警灭火监控系统

    Institute of Scientific and Technical Information of China (English)

    王祖麟; 赵志成

    2012-01-01

    This paper expounds the necessity ofconfigurating effective fire extinguishing device on the locomotive, and designs a alarm outfire monitoring system based on ARM. This system is detecting and monitoring in real time for running train, it makes the locomotive security system more perfect. It has a good practicability and expansibility.%本文阐述了在机车上配置有效灭火装置的必要性,设计了基于ARM的机车报警灭火监控系统。该系统对行进中的列车实时进行探测和监控,使机车的安保系统更加完善,具有良好的实用性和扩展性。

  3. Design and Implementation of GPS Signal Simulator Based on ARM%GPS信号仿真器方案设计与实现

    Institute of Scientific and Technical Information of China (English)

    谢杰; 侯博; 石阳; 姚志成

    2012-01-01

    The paper designed and implemented a kind of portable GPS signal simulator based on embedded ARM/DSP and FPGA. Cubic spline numerica method, with high computation ability and low error was proposed to simulate GPS satellite orbits. Meanwhile, the modularization design can be easily extended to Multi - Mode Satellite signal simulator. The implementation of complex GPS signal simulator was validated by commercial receiver. Compared with usual simulators based on PC, this one is smaller, lighter and more convenient to be used. It can provide a standard signal for receiver production lines and military experiment.%研究优化GPS导航系统仿真器设计,要实现一种便携式GPS卫星信号仿真器.由于系统要求实时性强和定位精度高,嵌入式ARM+ DSP+ FPGA的硬件架构的仿真器平台有限的运算和存储能力不能满足要求,因此提出了GPS轨道仿真的三次样条插值仿真算法,运算量小、计算速度快、误差小,同时采用模块化设计并预留接口,方便扩展开发,可作为多种卫星的仿真器.进行仿真的结果表明,实现了GPS复杂系统仿真的实时性,仿真信号频谱特性较好,定位准确,可为导航系统设计和军用实验提供了可靠依据.

  4. Energy efficiency vs. performance of the numerical solution of PDEs: An application study on a low-power ARM-based cluster

    Science.gov (United States)

    Göddeke, Dominik; Komatitsch, Dimitri; Geveler, Markus; Ribbrock, Dirk; Rajovic, Nikola; Puzovic, Nikola; Ramirez, Alex

    2013-03-01

    Power consumption and energy efficiency are becoming critical aspects in the design and operation of large scale HPC facilities, and it is unanimously recognised that future exascale supercomputers will be strongly constrained by their power requirements. At current electricity costs, operating an HPC system over its lifetime can already be on par with the initial deployment cost. These power consumption constraints, and the benefits a more energy-efficient HPC platform may have on other societal areas, have motivated the HPC research community to investigate the use of energy-efficient technologies originally developed for the embedded and especially mobile markets. However, lower power does not always mean lower energy consumption, since execution time often also increases. In order to achieve competitive performance, applications then need to efficiently exploit a larger number of processors. In this article, we discuss how applications can efficiently exploit this new class of low-power architectures to achieve competitive performance. We evaluate if they can benefit from the increased energy efficiency that the architecture is supposed to achieve. The applications that we consider cover three different classes of numerical solution methods for partial differential equations, namely a low-order finite element multigrid solver for huge sparse linear systems of equations, a Lattice-Boltzmann code for fluid simulation, and a high-order spectral element method for acoustic or seismic wave propagation modelling. We evaluate weak and strong scalability on a cluster of 96 ARM Cortex-A9 dual-core processors and demonstrate that the ARM-based cluster can be more efficient in terms of energy to solution when executing the three applications compared to an x86-based reference machine.

  5. 基于ARM920 T嵌入式低频数字扫描仪设计%Design of ARM920T-based embedded low-frequency digital scanner

    Institute of Scientific and Technical Information of China (English)

    刘顺财

    2014-01-01

    系统采用ARM920T作为核心处理器,以低频信号作为信号源,采用DDS技术,从而实现相频、幅度、频率特性的分析仪器,能够简单地实现信号源的时域和具体参数的波形。系统主要由ARM920T控制处理器、DDS扫频模块、ADC采样模块、DAC输出模块、检波滤波器模块、扫频信号源幅度模块组成。其中处理器采样ARM920T,扫频信号源采样DDS芯片AD9851,检波模块以AD637JQ芯片构成,相位检测模块由AD8302芯片构成,DAC芯片TLV5618控制扫频信号的幅度。实验结果表明,仪器可以检测20 Hz~1 MHz左右的频率信号源,可以显示在LCD屏幕上,直观地读出频率、幅度和相位。%Direct digital synthesizer (DDS )technology was employed to implement phase frequen-cy,amplitude,frequency characteristics analysis instruments,in which advanced RISC machines (ARM)920T was adopted as core processor and low frequency signal as the signal source.The sys-tem can simply realize the time domain of signal sources and specific parameters waveforms (simple signal source in the time domain waveform and specific parameters ),which mainly consists of ARM920T processor,DDS frequency sweeping module,analog to digital converter (ADC)sampling module,digital to analog converter (DAC)output module,waveforms detection filter module and frequency sweeping signal source amplitude module.The processor sampling was controlled by ARM920T,while the frequency sweeping signal source sampling was implemented by DDS chip AD9851.The waveform detection module was controlled by AD637JQ chip.The phase detection module and the frequency sweeping signal amplitude were controlled by AD8302 chip and the DAC chip TLV5618,respectively.The instrument can detect frequency signal source ranged between 20 Hz to 1 MHz and can directly display frequency,amplitude and phase on the liquid crystal display (LCD)screen.

  6. Design of a Compliant Robotic Arm Based on Series Elastic Actuator%一种基于串联弹性驱动器的柔顺机械臂设计

    Institute of Scientific and Technical Information of China (English)

    张秀丽; 谷小旭; 赵洪福; 王昆

    2016-01-01

    A compliant robotic arm with passive compliant mechanical structure and active compliant control, SoftArm II, is designed to cope with the dynamically-changing work environments and uncertain human-robot interactions. Series elastic actuators (SEA) are introduced between joint motors and links as transmission module, which is composed of linear springs evenly arranged circumferentially. Firstly, the kinematic model, dynamic model and system stiffness model are set up for the compliant 3DOF robotic arm. Then, SEA spring stiffness can be determined using weighted average joint stiffness at several representative poses in the workspace based on the system stiffness model. Position PID (proportional-integral-derivative) control is employed in the robotic arm, while contact forces at the arm’s end-point and joint torques are monitored to modify the planned trajectory adaptively. Experiments of the circle trajectory tracking in free workspace, human and the robot pushing along a straight line, and collision imitating, are carried out using the compliant robotic arm SoftArm II. The results show that SoftArm II reaches a good position tracking accuracy in free workspace, compliant interaction between the robotic arm and human is achieved, and collision of the robotic arm is safely avoided. The results indicate that the SEA-based passive compliant mechanical structure and the control approach based on end force and joint torque monitoring have the potential to meet the compliance and safety requirements of a robotic arm used in human-robot coexistence environment.%为了应对工作环境的动态变化以及人机交互的不确定性,设计了基于被动柔顺结构和主动柔顺控制的柔顺机械臂SoftArm II.在关节电机和连杆之间加入串联弹性驱动器(SEA)传动模块,SEA传动模块由线弹簧周向均布构成;建立了3DOF柔顺机械臂的运动学/动力学模型以及系统刚度模型,基于系统刚度模型提出工作空

  7. SOC storage in Swiss forest soils - driven by climate or historical land-use?

    Science.gov (United States)

    Gosheva, Sia; Walthert, Lorenz; Niklaus, Pascal; Zimmermann, Stephan; Hagedorn, Frank

    2015-04-01

    Soils store the most carbon of all terrestrial ecosystems, with forest soils being particularly carbon-rich (Schmidt et al. 2011; Hagedorn et al. 2010; Jobaggy & Jackson 2000). The C balance of soils might be altered by land-use changes such as in Switzerland, where the forest cover has increased by approximately 22% in the last century (Ginzler et al. 2011). The objectives of this study were 1) to determine whether historical forest cover change has an impact on soil organic carbon (SOC) storage in Swiss forests, and 2) to estimate the influence of climate on C-stocks in the organic layer and the mineral soil. In our study, we reconstructed forest cover changes for the last 150 years for the coordinates of 1000 soil profiles from the soil database of the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL). We evaluated historical and modern topographic maps using ArcGIS, classifying current forest sites into permanently (≥150y) forested and newly forested sites (ages of the sites and of potentially additional drivers such as topography, climate, and soil properties on SOC stocks. Contrary to our expectations, our results indicate slightly higher SOC stocks in younger forest sites compared to permanently forested ones. This result could be observed in both organic layer (28,65 vs. 22,23 t C ha-1) and mineral soil (131,38 vs. 113,68 t C ha-1). We attribute the slightly smaller SOC stocks in the younger forests to their inherently higher SOC-stocks, as associated with favorable land previously used for grassland. Moreover, we observed higher SOC stocks under coniferous than under deciduous forest - however, this was only evident in the organic layer, but not in the mineral soil. Soil carbon increased significantly with decreasing mean annual temperature (MAT) and increasing precipitation (MAP), in particular in the organic layer. In addition to climate, we tested a number of other controlling factors such as altitude, pH, soil texture. However

  8. Role of SOCS-1 Gene on Melanoma Cell Growth and Tumor Development1

    OpenAIRE

    Scutti, Jorge A Borin; Matsuo, Alisson Leonardo; Pereira, Felipe Valença; Massaoka, Mariana Hiromi; Figueiredo, Carlos Rogério; Moreira, Dayson Friaça; Belizário, José Ernesto; Luiz R Travassos

    2011-01-01

    Melanoma is the most aggressive form of skin cancer, and its incidence has increased dramatically over the years. The murine B16F10 melanoma in syngeneic C57Bl/6 mice has been used as a highly aggressive model to investigate tumor development. Presently, we demonstrate in the B16F10-Nex2 subclone that silencing of SOCS-1, a negative regulator of Jak/Stat pathway, leads to reversal of the tumorigenic phenotype and inhibition of melanoma cell metastasis. SOCS-1 silencing with short hairpin RNA ...

  9. Socs36E Controls Niche Competition by Repressing MAPK Signaling in the Drosophila Testis.

    Directory of Open Access Journals (Sweden)

    Marc Amoyel

    2016-01-01

    Full Text Available The Drosophila testis is a well-established system for studying stem cell self-renewal and competition. In this tissue, the niche supports two stem cell populations, germ line stem cells (GSCs, which give rise to sperm, and somatic stem cells called cyst stem cells (CySCs, which support GSCs and their descendants. It has been established that CySCs compete with each other and with GSCs for niche access, and mutations have been identified that confer increased competitiveness to CySCs, resulting in the mutant stem cell and its descendants outcompeting wild type resident stem cells. Socs36E, which encodes a negative feedback inhibitor of the JAK/STAT pathway, was the first identified regulator of niche competition. The competitive behavior of Socs36E mutant CySCs was attributed to increased JAK/STAT signaling. Here we show that competitive behavior of Socs36E mutant CySCs is due in large part to unbridled Mitogen-Activated Protein Kinase (MAPK signaling. In Socs36E mutant clones, MAPK activity is elevated. Furthermore, we find that clonal upregulation of MAPK in CySCs leads to their outcompetition of wild type CySCs and of GSCs, recapitulating the Socs36E mutant phenotype. Indeed, when MAPK activity is removed from Socs36E mutant clones, they lose their competitiveness but maintain self-renewal, presumably due to increased JAK/STAT signaling in these cells. Consistently, loss of JAK/STAT activity in Socs36E mutant clones severely impairs their self-renewal. Thus, our results enable the genetic separation of two essential processes that occur in stem cells. While some niche signals specify the intrinsic property of self-renewal, which is absolutely required in all stem cells for niche residence, additional signals control the ability of stem cells to compete with their neighbors. Socs36E is node through which these processes are linked, demonstrating that negative feedback inhibition integrates multiple aspects of stem cell behavior.

  10. A Reconfigurable Network-on-Chip Architecture for Optimal Multi-Processor SoC Communication

    OpenAIRE

    Rana, Vincenzo; Atienza, David; Santambrogio, Marco Domenico; Sciuto, Donatella; De Micheli, Giovanni

    2010-01-01

    Network-on-Chip (NoC) has emerged as a very promising paradigm for designing scalable communication architecture for Systems on Chips (SoCs). However, NoCs designed to fulfill the bandwidth requirements between the cores of an SoC for a certain set of running applications may be highly sub-optimal for another set of applications. In this context, methods that can lead to versatility enhancements of initial NoC designs to changing working conditions, imposed by variable sets of executed real-l...

  11. DMPD: Suppressor of cytokine signaling (SOCS) 2, a protein with multiple functions. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available 17070092 Suppressor of cytokine signaling (SOCS) 2, a protein with multiple functio...Epub 2006 Oct 27. (.png) (.svg) (.html) (.csml) Show Suppressor of cytokine signaling (SOCS) 2, a protein with multi...SOCS) 2, a protein with multiple functions. Authors Rico-Bautista E, Flores-Morales A, Fernandez-Perez L. Pu...ple functions. PubmedID 17070092 Title Suppressor of cytokine signaling (

  12. Design of Smart Merging Unit Based on FPGA and ARM%基于FPGA与ARM的智能合并单元设计

    Institute of Scientific and Technical Information of China (English)

    朱超; 黄灿; 梅军; 郑建勇

    2011-01-01

    To meet the requirements of smart substations for digital information. integrated functions and compact structure, the definitions of merging unit in IEC 6OO44 -8 and IEC 61850-9-1/2 are analyzed, and on this basis a smart merging unit based on field-programmable gate array (FPGA) and advanced RISC machines (ARM) is designed The auxiliary processor FPGA is responsible for synchronously receiving multi-channel data from different electronic transformers and implementing the parallel operation and switching-over of busbar by integrated Iogical control mechanism software; the main ARM prcessor is responsible for the real-time control of FPGA and sending the sampled data in the form specified in IEC 61850-9-2 by Ethemet, and the pre-configured sampled valne control block is utilized to implement the flexible definition of transmission model for sampled values to avoid the difficulty in implementing the mapping of manufacturing message specification (MMS) Testing results show that the proposed design is feasible and correct.%针对智能变电站信息数字化、功能集成化、结构紧凑化的要求,分析了IEC 60044-8、IEC 61850-9-1/2标准对合并单元的定义,在此基础上设计了一种基于现场可编程门阵列(field-programmable gate array,FPGA)与高级RISC微处理器(advanced RlSC machines,ARM)的智能合并单元.辅处理器FPGA负责多路数据的同步接收,并集成逻辑判别机制软件实现母线的并列运行和切换;主处理器ARM负责FPGA的实时控制并将采样值按IEC 61850-9-2标准通过以太网发送,采用预配置采样值控制块实现采样值传输模型的灵活定义,避免了制造报文规范(manufacturing message specification,MMS)映射的实现困难.试验结果表明了设计方法的可行性和正确性.

  13. Design of Automatic Sampling System Based on ARM%基于ARM的自动加样系统的设计

    Institute of Scientific and Technical Information of China (English)

    张冰洋; 武力; 徐文; 贾艳丽; 陈亚光

    2012-01-01

    为适应分析检测自动化样品前处理的需要,本文设计一种基于ARM和WinCE的三轴自动加样系统。该系统采用ARM9内核的S3C2440为硬件系统核心,以步进电机和蠕动泵为执行机构;在ARM上面移植了WinCE6.0操作系统,以此为基础开发应用软件;用LCD触摸屏来进行命令输入、工作状态监控等任务,进行人机交互。实现了操控界面友好、系统加样针管定位、吸排系统升降和流量控制等功能,具有定位准确,自动化程度高等特点,具有很强的实用价值。%Aiming at the demand of analytical automation of sampling pretreatment,an automatic sampling system based on ARM and WinCE is designed.S3C2440 was used as the core of hardware system,stepping motors and peristaltic pump were used as implementing agencies.The WinCE6.0 operation system was transplanted in ARM microprocessor as the application software development environment.LCD touch screen was used as human-computer interface,on which the operations of command inputting and work state monitoring were carried.A friendly control interface,the sampling syringes’ positioning,the imbibing-draining system’s ascending and flow controlling were designed.The system has the advantage of accurate position,micrometeor control and high automation.The technology and methods adopted in the system are practical and worthy of using abroad.

  14. 基于ARM-Linux系统与组态王Modbus/TCP通讯的研究与实现%Research and Implementation of Modbus/TCP Communication Based on ARM-Linux System and KingView

    Institute of Scientific and Technical Information of China (English)

    陈文辉; 谭才彪; 许文明; 杨艳青

    2013-01-01

    Modbus/TCP工业以太网是运行在TCP/IP协议栈上的Modbus报文传输协议,组态王(KingView)是国内组态软件龙头.分析了Modbus/TCP的协议构成及其体系结构和组态王中的莫迪康Modbus/TCP协议,在嵌入式ARM9和Linux操作系统平台上实现了Modbus/TCP协议与组太王6.55的通讯.方案能有效实现工业现场的Arm-Linux系统与组态王的Modbus/TCP通信功能.

  15. Biological evidence that SOCS-2 can act either as an enhancer or suppressor of growth hormone signaling

    DEFF Research Database (Denmark)

    Greenhalgh, Christopher J; Metcalf, Donald; Thaus, Anne L;

    2002-01-01

    attenuate growth hormone (GH) signaling. In vitro studies indicate that, while SOCS-2 can inhibit GH action at low concentrations, at higher concentrations it may potentiate signaling. To determine whether a similar enhancement of signaling is observed in vivo or alternatively whether increased SOCS-2...... number of mouse organs, while phosphopeptide binding studies with recombinant SOCS-2 defined phosphorylated tyrosine 595 on the GH receptor as the site of interaction. Together, the data implicate SOCS-2 as having dual effects on GH signaling in vivo....

  16. SOCS-1 gene delivery cooperates with cisplatin plus pemetrexed to exhibit preclinical antitumor activity against malignant pleural mesothelioma.

    Science.gov (United States)

    Iwahori, Kota; Serada, Satoshi; Fujimoto, Minoru; Ripley, Barry; Nomura, Shintaro; Mizuguchi, Hiroyuki; Shimada, Kazuki; Takahashi, Tsuyoshi; Kawase, Ichiro; Kishimoto, Tadamitsu; Naka, Tetsuji

    2013-01-15

    Malignant pleural mesothelioma (MPM) is an aggressive tumor with poor prognosis for which an effective therapy remains to be established. This study investigated the therapeutic potential of gene delivery using suppressor of cytokine signaling 1 (SOCS-1), an endogenous inhibitor of intracellular signaling pathways, for the treatment of MPM. We infected MPM cells (MESO-4, H28 and H226) with adenovirus-expressing SOCS-1 vector to examine the effect of SOCS-1 overexpression on MPM cells. We evaluated the antitumor effect of SOCS-1 gene delivery combined with cisplatin plus pemetrexed by cell proliferation, apoptosis and invasion assay. We also investigated the regulation of NF-κB and STAT3 signaling related to apoptotic pathways. Furthermore, we evaluated the inhibition of tumor growth by SOCS-1 gene delivery combined with cisplatin plus pemetrexed in vivo. SOCS-1 gene delivery cooperated with cisplatin plus pemetrexed to inhibit cell proliferation, invasiveness and induction of apoptosis in MPM cells. SOCS-1 regulated NF-κB and STAT3 signaling to induce apoptosis in MESO-4 and H226 cells. Furthermore, SOCS-1 gene delivery cooperated with cisplatin plus pemetrexed to regulate NF-κB signaling and significantly inhibit tumor growth of MPM in vivo. These results suggest that SOCS-1 gene delivery has a potent antitumor effect against MPM and a potential for clinical use in combination with cisplatin plus pemetrexed. PMID:22532243

  17. Expression of suppressor of cytokine signalling 3 (SOCS3) in human bladder epithelial cells infected with uropathogenic Escherichia coli.

    Science.gov (United States)

    Demirel, Isak; Säve, Susanne; Kruse, Robert; Persson, Katarina

    2013-02-01

    Suppressor of cytokine signalling (SOCS) proteins inhibit pro-inflammatory signalling mediated by Janus-activated kinase (JAK)-signal transducer and activator of transcription (STAT) pathways. To evade the immune response some pathogens appear to modify the host SOCS proteins. Uropathogenic Escherichia coli (UPEC) are able to subvert the host response evoked by bladder epithelial cells, but the mechanisms are not fully understood. The objective of this study was to investigate whether UPEC can modify the host SOCS and STAT3 response. Real time RT-PCR studies demonstrated an increased SOCS1 and SOCS3 expression in the isolated human bladder epithelial cell lines (RT-4 and 5637) in response to cytokines. UPEC strain IA2 increased SOCS3, but not SOCS1, mRNA levels with a peak at 6 h after infection. The increase of SOCS3 was confirmed at the protein level by Western blotting. The UPEC strain IA2 caused a time-dependent decrease in the phosphorylation of STAT3. This study demonstrates that UPEC are able to affect SOCS3 and STAT3 signalling in human uroepithelial cells. The finding that UPEC are able to induce mediators involved in suppression of host cytokine signalling may help to elucidate how UPEC may circumvent the host response during urinary tract infection.

  18. Managing new arms races

    International Nuclear Information System (INIS)

    The management of new arms races in the region of Asia-Pacific includes considerations of weapons trade and transfer in the region, with an emphasis on nuclear weapons proliferation. It deals with the problem of controlling the arms trade and the efforts to control conventional weapons and underlines the possible role and influence of Conference on Cooperation and Security in Europe (CSCE)

  19. 基于ARM7飞控系统多传感器数据融合方法及实现%Multi-sensor Data Fusion Method and Implementation of Unmanned Helicopter Control System Based on ARM7

    Institute of Scientific and Technical Information of China (English)

    孙豫川; 裴海龙; 吴毅彬

    2013-01-01

    无人直升机控制系统是一个典型的多传感器系统,为了实现各传感器的优势互补,需要进行多传感器数据融合;可以采用十一阶扩展卡尔曼滤波器——EKF来实现数据融合滤波;这里介绍了十一阶扩展卡尔曼滤波器在基于arm7无人直升机飞控系统中的应用,卡拉曼滤波有效地去除了角度约的漂移量;为了降低十一阶kalman在ARM 7中的运算时间,可以将一个大系统拆分成若干小系统,然后分别对小系统进行滤波,同时对卡尔曼滤波里面的一些运算做优化处理;最终在主频是48 MHZ的ARM 7中的运算时间由70 ms减少到25 ms,成功实现了十一阶卡尔曼滤波在本系统中的高效运行.

  20. Intelligent Door Control System Based on FPGA + ARM%基于FPGA+ARM的智能图像门控系统

    Institute of Scientific and Technical Information of China (English)

    张挺飞; 樊永生; 孙凌云

    2012-01-01

    提出了一种基于图像的智能门控系统,成功改善了传统智能门控系统控制范围小、灵敏度低的缺点.系统采用FPGA+ARM双控制器的硬件结构,实现了系统的小型化和实时性.FPGA控制摄像头采集图像数据,并进行灰度预处理,通过2片SRAM乒乓操作实时缓存图像数据,采用总线的方式与ARM嵌入式系统进行通信,并通过移植OpenCV实现图像门控算法.实验结果表明该系统的准确率达到96%.%An intelligent door control system based on the image technology is proposed and implemented. Therefore, the shortcomings of the small range, low sensitivity of the traditional intelligent door control system are successfully improved. The system of miniaturization and real-time is realized by the hardware structure of double controller (FPGA + ARM). The image data is collected by a camera which is controlled by FPGA. And at the same time the grayscale is pretreated. Image data is cached in real time by two SRAM ping-pong operations. Using the bus and ARM embedded system to communicate and the image door control algorithm is achieved by transplanting OpenCV. Experimental results show that the accuracy rate is up to 96%.

  1. Modbus Protocol Based Designs of ARM Farmland Server%基于Modbus协议ARM农田服务器的设计

    Institute of Scientific and Technical Information of China (English)

    袁福营; 史智兴; 靖立伟; 张宜君

    2014-01-01

    将Modbus协议应用到农业信息化领域,设计了一种基于Modbus协议的嵌入式农田信息采集服务器。分析了Modbus协议,设计了系统各模块之间的数据通信接口,ARM服务器与应用层采用Modbus/TCP通信完成用户的查询,ARM服务器与数据采集层采用Modbus串口通信进行数据的存储,提出了Modbus/TCP帧与串行链路RTU帧的转换方法,实现了应用层与数据采集层的实时通信,提高了系统的有效性和可靠性。%Modbus protocol was applied in the farmland information collection system and a preliminary design of an embed-ded farmland information collection server based on Modbus protocol was presented. ARM server using Modbus/TCP to com-municate with the application layer for completing the user’s query, and ARM server using seriallink to communicate with data acquisition layer for data storage were analyzed. The conversion of Modbus/TCP frame with serial link RTU frame was pro-posed to realize the communication for the application layer and the data acquisition layer. The design improved the effective-ness and reliability of the system.

  2. Automatic 3D motion estimation of left ventricle from C-arm rotational angiocardiography using a prior motion model and learning based boundary detector.

    Science.gov (United States)

    Chen, Mingqing; Zheng, Yefeng; Wang, Yang; Mueller, Kerstin; Lauritsch, Guenter

    2013-01-01

    Compared to pre-operative imaging modalities, it is more convenient to estimate the current cardiac physiological status from C-arm angiocardiography since C-arm is a widely used intra-operative imaging modality to guide many cardiac interventions. The 3D shape and motion of the left ventricle (LV) estimated from rotational angiocardiography provide important cardiac function measurements, e.g., ejection fraction and myocardium motion dyssynchrony. However, automatic estimation of the 3D LV motion is difficult since all anatomical structures overlap on the 2D X-ray projections and the nearby confounding strong image boundaries (e.g., pericardium) often cause ambiguities to LV endocardium boundary detection. In this paper, a new framework is proposed to overcome the aforementioned difficulties: (1) A new learning-based boundary detector is developed by training a boosting boundary classifier combined with the principal component analysis of a local image patch; (2) The prior LV motion model is learned from a set of dynamic cardiac computed tomography (CT) sequences to provide a good initial estimate of the 3D LV shape of different cardiac phases; (3) The 3D motion trajectory is learned for each mesh point; (4) All these components are integrated into a multi-surface graph optimization method to extract the globally coherent motion. The method is tested on seven patient scans, showing significant improvement on the ambiguous boundary cases with a detection accuracy of 2.87 +/- 1.00 mm on LV endocardium boundary delineation in the 2D projections.

  3. Study on the control system of automatic welding system based on ARM%基于ARM的机器人自动焊接控制系统

    Institute of Scientific and Technical Information of China (English)

    段锦程; 石永华; 俞国庆; 梁斌

    2011-01-01

    Welding distortion emerges in three-dimensional seam welding.The teaching-playback robot can not correct the deviation real-timely by itself.Therefore,it is necessary to correct the deviation during welding process real-timely.Based on ARM9-S3C2440,by using RS-232 to communicate with welding robot,this control system can adjust the welding traveling path in real-time.lt can control the position of the welding torch to get rid of the side effect of hot deformation.Using this control system, it is guaranteed that not only the welding torch moves along the seam center,but also that the contact tube to workpiece distance(CTWD) is equal.In welding experiments, it produces good welding quality.%立体曲线焊缝焊接时会产生较大的焊接变形,如以示教方式进行机器人焊接将导致焊接路径的偏离,必须在焊接过程中进行实时纠偏.设计开发了一种焊接机器人控制系统,硬件以ARM9-S3C2440为核心,通过RS232与机器人进行通信,编写了控制软件,实现了焊接机器人的焊枪位置实时调整,有效应对了焊接热变形的影响.既保证了焊枪沿着坡口中心运动,又保证了导电嘴到工件的距离(CTWD),焊接工艺稳定,焊缝质量较好.

  4. A four-armed Schiff base: 6,6′,6′′,6′′′-tetramethoxy-2,2′,2′′,2′′′-[methanetetrayltetrakis(methylenenitrilomethylidyne]tetraphenol

    Directory of Open Access Journals (Sweden)

    Guang-Qi Jiang

    2008-08-01

    Full Text Available In the structure of the title compound, C37H40N4O8, pentaerythrityltetramine is bonded to four o-vanillin molecules, forming a four-armed Schiff base molecule. These molecules are connected by intermolecular C—H...O hydrogen bonds. Intramolecular C—H...N and O—H...N hydrogen bonds are also present.

  5. Analysis of Suppressor of Cytokine Signaling 2 Gene (SOCS2 Polymorphism in Different Dog Breeds

    Directory of Open Access Journals (Sweden)

    Martina Miluchová

    2011-05-01

    Full Text Available SOCS2 is a negative regulator of growth hormone signaling. The deletion of SOCS2 in mice results in a 30-50% increase in post-natal growth. The aim of the paper was to identify of suppressor of cytokine signaling 2 gene (SOCS2 polymorphism in different dog breeds. The material involved 77 dogs from 14 different breeds. Canine genomic DNA was isolated from saliva by modified method with using DNAzol® (Molecular Research Center and linear polyacrylamide (LPA carrier and from blood by using NucleospinBlood (Macherey-Nagel and used in order to estimate SOCS2 genotypes by PCR-RFLP method. The PCR products were digested with TaqI restriction enzyme. The T allele was distributed among large dog breeds (Czech pointer, Golden retriever, Rottweiler with an allele frequency ranging from 0.2857 to 1.00. In the population of Czech pointer we detected all genotypes. There were detected homozygote genotype GG with frequency 0.5476, heterozygote genotype GT with frequency 0.3333 and homozygote genotype TT with frequency 0.1191. Results point out that frequency of G allele was high and was represented 0.7143. Frequency of T allele was 0.2857. In Rottweiler was detected homozygote genotype TT. Genotypes GG and GT has not been observed. In Golden retriever we detected only heterozygote genotype GT.

  6. Primary single event effect studies on Xilinx 28-nm System-on-Chip (SoC)

    Science.gov (United States)

    Zhang, Yao; Liu, Shuhuan; Du, Xuecheng; Yuan, Yuan; He, Chaohui; Ren, Xiaotang; Du, Xiaozhi; Li, Yonghong

    2016-09-01

    Single Event Effect (SEE) on Xilinx 28-nm System-on-Chip (SoC) was investigated by both simulation and experiments in this study. In the simulation process, typical structure of NAND gate and flip-flop in SoC were designed using Cadence tool. Various kinds of radiation were simulated as pulsed current source in consideration of multilayer wiring and energy loss before reaching the sensitive area. The circuit modules were simulated as SEE occurred and malfunctioned when pulsed current source existed. The changes of the circuit modules output were observed when pulsed current signals were placed at different sensitive nodes or the circuit operated under different conditions. The sensitive nodes in typical modules and the possible reasons of test program malfunction were primarily studied. In the experimental process, SoC chip was irradiated with α particles, protons and laser respectively. The irradiation test results showed that Single Event Upset (SEU) occurred in typical modules of SoC, in accordance with the simulation results.

  7. STAT3-mediated constitutive expression of SOCS-3 in cutaneous T-cell lymphoma

    DEFF Research Database (Denmark)

    Brender, C; Nielsen, M; Kaltoft, K;

    2001-01-01

    ) obtained from affected skin from a patient with mycosis fungoides (MF) and from peripheral blood from a patient with Sezary syndrome (SS). In contrast, constitutive SOCS-3 expression is not found in the leukemic Jurkat T-cell line, the MOLT-4 acute lymphoblastic leukemia cell line, and the monocytic...

  8. 变电流下的电池荷电状态定义方法探讨%Research on the definition of SOC of batteries in the condition of changing currents

    Institute of Scientific and Technical Information of China (English)

    麻友良; 陈全世; 朱元

    2001-01-01

    It was very importance for the battery management system inelectric vehicles to measure and estimate the state of charge(SOC) of lead-acid batteries.It's for the prevailing method to achieve the SOC of batteries and pointed out the disadvantage of this method.The influence factors of lead-acid batteries discharge capacity were divided into two groups.One group was renewable factors and another group was unrenewable factors.Therefore the original definition of SOC was not applicable for changing discharge currents,but a new definition of the SOC and its calculating model based on the empirical data in the condition of changing discharge currents.%铅酸电池的荷电状态(SOC)的测量和估计,对电动汽车的电池管理系统极为重要。分析了目前流行的SOC定义所存在的问题,并将各种电池容量的影响因素分为可恢复性和不可恢复性两类,这不仅解释了原SOC定义不适应变电流放电情况的原因,并以此为基础提出了在变电流放电下的SOC定义方法和计算模型。

  9. Suppression of microRNA-155 attenuates neuropathic pain by regulating SOCS1 signalling pathway.

    Science.gov (United States)

    Tan, Yi; Yang, Jun; Xiang, Kai; Tan, Qindong; Guo, Qulian

    2015-03-01

    Chronic neuropathic pain is an unfavourable pathological pain characterised by allodynia and hyperalgesia which has brought considerable trouble to people's physical and mental health, but effective therapeutics are still lacking. MicroRNAs (miRNAs) have been widely studied in the development of neuropathic pain and neuronal inflammation. Among various miRNAs, miR-155 has been widely studied. It is intensively involved in regulating inflammation-associated diseases. However, the role of miR-155 in regulating neuropathic pain development is poorly understood. In the present study, we aimed to investigate whether miR-155 is associated with neuropathic pain and delineate the underlying mechanism. Using a neuropathic pain model of chronic constriction injury (CCI), miR-155 expression levels were markedly increased in the spinal cord. Inhibition of miR-155 significantly attenuated mechanical allodynia, thermal hyperalgesia and proinflammatory cytokine expression. We also demonstrated that miR-155 directly bound with the 3'-untranslated region of the suppressor of cytokine signalling 1 (SOCS1). The expression of SOCS1 significantly decreased in the CCI rat model, but this effect could be reversed by miR-155 inhibition. Furthermore, knockdown of SOCS1 abrogated the inhibitory effects of miR-155 inhibition on neuropathic development and neuronal inflammation. Finally, we demonstrated that inhibition of miR-155 resulted in the suppression of nuclear factor-κB and p38 mitogen-activated protein kinase activation by mediating SOCS1. Our data demonstrate the critical role of miR-155 in regulating neuropathic pain through SOCS1, and suggest that miR-155 may be an important and potential target in preventing neuropathic pain development. PMID:25488154

  10. Manipulability measure of dual-arm space robot and its application to design an optimal configuration

    Science.gov (United States)

    Zhang, Bo; Liang, Bin; Wang, Xueqian; Li, Gang; Chen, Zhang; Zhu, Xiaojun

    2016-11-01

    Coupling effect exists among different arms and the base in a multi-arm space robot. The manipulability measure of one arm can be affected by the base and the other arms, which has important effects on the configuration optimization, the singularity avoidance and the compliant control. The manipulability measure for a multi-arm space robot is more complex than that of a single-arm space robot. At present, the manipulability measure of a multi-arm space robot has not been studied. In the paper, a new concept of manipulability measure is applied to analyze the manipulability measure for a dual-arm space robot, especially for the manipulability measure of the mission arm subjecting to the influence from coupling effect of auxiliary arm and the base. Based on the manipulability measure of mission arm, a performance index is introduced and used to design and choose an optimization configuration for a dual-arm space robot. Finally, a plane dual-arm space robot is simulated, which is illustrated the influence of joint angles and the base attitude on mission arm's manipulability measure. Simulation results show that the proposed manipulability measure is useful for a multi-arm space robot and optimal configuration can be extended and applied to the coordinated soft rendezvous and docking and the target capture in the field of on-orbit servicing.

  11. A Global Obstacle-avoidance Map for Anthropomorphic Arms

    Directory of Open Access Journals (Sweden)

    Cheng Fang

    2014-07-01

    Full Text Available More and more humanoid robots are used in human society, and they face a wide variety of complicated manipulation tasks, which are mainly to be achieved by their anthropomorphic arms. Obstacle avoidance for the anthropomorphic arm must be a fundamental consideration to guarantee the successful implementation of these tasks. Different from traditional methods searching for feasible or optimal collision-free solutions for the anthropomorphic arm, a global obstacle- avoidance map for the whole arm is proposed to indicate the complete set of feasible solutions. In this map, the motion of the arm can be appropriately planned to intuitively control the configuration of the arm in motion. First, the cubic spline function is adopted to interpolate some well-chosen path points to generate a smooth collision-free path for the wrist of the anthropomorphic arm. Second, based on the path function of the wrist, the time and the self-rotation angle of the arm about the “shoulder-wrist” axis are used to parameterize all possible configurations of the arm so that a global two- dimensional map considering the obstacle avoidance can be established. Subsequently, a collision-free self-rotation angle profile of the arm can be well planned. Finally, the joint trajectories of a specific anthropomorphic arm, which correspond to the planned path of the wrist and self-rotation angle profile of the arm, can be solved on the basis of the general kinematic analysis of the anthropomorphic arm, and the specific structure. Several simulations are conducted to verify that the proposed collision-free motion planning method for anthropomorphic arms has some advantages and can be regarded as a convenient and intuitive tool to control the configuration of the anthropomorphic arm in motion, without collision with obstacles in its surroundings.

  12. t(8;9(p22;p24/PCM1-JAK2 activates SOCS2 and SOCS3 via STAT5.

    Directory of Open Access Journals (Sweden)

    Stefan Ehrentraut

    Full Text Available Fusions of the tyrosine kinase domain of JAK2 with multiple partners occur in leukemia/lymphoma where they reportedly promote JAK2-oligomerization and autonomous signalling, Affected entities are promising candidates for therapy with JAK2 signalling inhibitors. While JAK2-translocations occur in myeloid, B-cell and T-cell lymphoid neoplasms, our findings suggest their incidence among the last group is low. Here we describe the genomic, transcriptional and signalling characteristics of PCM1-JAK2 formed by t(8;9(p22;p24 in a trio of cell lines established at indolent (MAC-1 and aggressive (MAC-2A/2B phases of a cutaneous T-cell lymphoma (CTCL. To investigate signalling, PCM1-JAK2 was subjected to lentiviral knockdown which inhibited 7 top upregulated genes in t(8;9 cells, notably SOCS2/3. SOCS3, but not SOCS2, was also upregulated in a chronic eosinophilic leukemia bearing PCM1-JAK2, highlighting its role as a central signalling target of JAK2 translocation neoplasia. Conversely, expression of GATA3, a key T-cell developmental gene silenced in aggressive lymphoma cells, was partially restored by PCM1-JAK2 knockdown. Treatment with a selective JAK2 inhibitor (TG101348 to which MAC-1/2A/2B cells were conspicuously sensitive confirmed knockdown results and highlighted JAK2 as the active moiety. PCM1-JAK2 signalling required pSTAT5, supporting a general paradigm of STAT5 activation by JAK2 alterations in lymphoid malignancies. MAC-1/2A/2B--the first JAK2-translocation leukemia/lymphoma cell lines described--display conspicuous JAK/STAT signalling accompanied by T-cell developmental and autoimmune disease gene expression signatures, confirming their fitness as CTCL disease models. Our data support further investigation of SOCS2/3 as signalling effectors, prognostic indicators and potential therapeutic targets in cancers with JAK2 rearrangements.

  13. Nonspecific Arm Pain

    Directory of Open Access Journals (Sweden)

    Ali Moradi

    2013-12-01

    Full Text Available   Nonspecific activity-related arm pain is characterized by an absence of objective physical findings and symptoms that do not correspond with objective pathophysiology. Arm pain without strict diagnosis is often related to activity, work-related activity in particular, and is often seen in patients with physically demanding work. Psychological factors such as catastrophic thinking, symptoms of depression, and heightened illness concern determine a substantial percentage of the disability associated with puzzling hand and arm pains. Ergonomic modifications can help to control symptoms, but optimal health may require collaborative management incorporating psychosocial and psychological elements of illness.

  14. Nonspecific Arm Pain

    Directory of Open Access Journals (Sweden)

    Ali Moradi

    2013-12-01

    Full Text Available Nonspecific activity-related arm pain is characterized by an absence of objective physical findings and symptoms that do not correspond with objective pathophysiology. Arm pain without strict diagnosis is often related to activity, work-related activity in particular, and is often seen in patients with physically demanding work. Psychological factors such as catastrophic thinking, symptoms of depression, and heightened illness concern determine a substantial percentage of the disability associated with puzzling hand and arm pains. Ergonomic modifications can help to control symptoms, but optimal health may require collaborative management incorporating psychosocial and psychological elements of illness.

  15. Design of a novel 3-DOF hybrid mechanical arm

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Parameter optimization for a novel 3-DOF hybrid mechanical arm was presented by using a statistics method called the statistics parameters optimization method based on index atlases.Several kinematics and mechanics performance evaluation indices were proposed and discussed,according to the kinematics and mechanics analyses of the mechanical arm.Considering the assembly technique,a prototype of the 3-DOF hybrid mechanical arm was developed,which provided a basis for applications of the 3-DOF hybrid mechanical arm.The novel 3-DOF hybrid mechanical arm can be applied to the modern industrial fields requiring high stiffness,lower inertia and good technological efficiency.A novel 6-DOF hybrid humanoid mechanical arm was built,in which the present mechanical arm was connected with a spherical 3-DOF parallel manipulator.

  16. Dynamic and Stability of Harmonic Driving Flexible Cartesian Robotic Arm with Bolted Joints Based on the Sensitivity and Multiple Scales Method

    Directory of Open Access Journals (Sweden)

    Yufei Liu

    2015-01-01

    Full Text Available Flexible Cartesian robotic arms (CRAs are typical multicoupling systems. Considering the elastic effects of bolted joints and the motion disturbances, this paper investigates the dynamic and stability of the flexible CRA. With the kinetic energy and potential energy of the comprising components, Hamilton’s variational principle and Duhamel integral are utilized to derive the dynamic equation and vibration differential equation. Based on the proposed elastic restraint model of the bolted joints, boundary conditions and mode equations of the flexible CRA are determined with using the principle of virtual work. According to the mode frequencies and sensitivities analysis, it reveals that the connecting stiffness of the bolted joints has significant influences, and the mode frequencies are more sensitive to the tensional stiffness. Moreover, describing the motion displacement of the driving base as combination of an average motion displacement and a harmonic disturbance, the vibration responses of the system are studied. The result indicates that the motion disturbance has obvious influence on the vibration responses, and the influence enhances under larger accelerating operations. The multiple scales method is introduced to analyze the parametric stability of the system, as well as the influences of the tensional stiffness and the end-effector on the stability.

  17. Program Design and Application of Ethernet Communication Based on ARM%基于ARM的以太网通信程序的设计与实现

    Institute of Scientific and Technical Information of China (English)

    吴婷婷; 孙旭; 谢兴红; 侯富强; 张稳

    2012-01-01

    Communication is the basic way to transport and share information between different systems.Ethernet is the basic and common Protocol Standards in the local network.Through the different transport media,Ethernet can realize the communication and connection between different devices.The paper is based on system hardware,focuses on the software design of communication interface,and develops the communication program based on the ARM Development Board.This application can send data which created by sensor to the client.%通信是各个系统进行数据交换,资源共享的基本方法。以太网是当今现有局域网采用的最通用的通信协议标准,它可以通过不同的传输媒体,实现各设备间的数据交换。文章在系统硬件基础上,着重研究了通信接口的软件设计,并编写了基于ARM开发板的通信程序。该程序能将传感器采集的数据传输至客户机。

  18. An Elastica Arm Scale

    CERN Document Server

    Bosi, F; Corso, F Dal; Bigoni, D

    2015-01-01

    The concept of 'deformable arm scale' (completely different from a traditional rigid arm balance) is theoretically introduced and experimentally validated. The idea is not intuitive, but is the result of nonlinear equilibrium kinematics of rods inducing configurational forces, so that deflection of the arms becomes necessary for the equilibrium, which would be impossible for a rigid system. In particular, the rigid arms of usual scales are replaced by a flexible elastic lamina, free of sliding in a frictionless and inclined sliding sleeve, which can reach a unique equilibrium configuration when two vertical dead loads are applied. Prototypes realized to demonstrate the feasibility of the system show a high accuracy in the measure of load within a certain range of use. It is finally shown that the presented results are strongly related to snaking of confined beams, with implications on locomotion of serpents, plumbing, and smart oil drilling.

  19. ARM7-kehityskortti

    OpenAIRE

    Kukkonen, Henri

    2006-01-01

    Tämän opinnäytetyön tarkoituksena oli suunnitella ja toteuttaa ARM-mikro-ohjain pohjainen kehityskortti. Kortin tuli olla soveltuva ARM-ohjelmoinnin opettamiseen. Työssä myös selvitettiin ARM-mikro-ohjaimen ohjelmointiympäristön käyttöönotto. Teoriaosassa käsitellään ARM-arkkitehtuuria, työssä käytettyjen Atmelin AT91R40008-mikro-ohjaimen sekä Philipsin LPC2105-mikro-ohjaimen ominaisuuksia. Erityisesti työssä keskitytään kehityskorttien suunnitteluun. Kehityskortin vaatimuksina oli, että se ...

  20. 基于ARM的智能家居控制系统设计%Design of smart home control system based on ARM

    Institute of Scientific and Technical Information of China (English)

    杨晓迪; 廖昕; 古丽米拉·克孜尔别克; 孙中华

    2015-01-01

    针对传统智能家居采用有线组建布线繁琐,增减设备需要重新布线,影响美观,且系统中的家电需要依靠家庭内部的PC,升级和维护均不方便。在此将ZigBee无线通信技术及嵌入式ARM技术结合在一起,利用Qt技术通过触摸屏进行人机交互,设计了一种既能利用PC机又能利用手持终端对家居进行控制的智能家居控制系统。以现有嵌入式ARM微处理器的开发和控制水平,开展基于ZigBee的网点部署的研究,以无线网实施家居电器的控制和管理。测试表明,该系统具有良好的实用性、可靠性和可扩展性。%Since the cumbersome wired formation is used in traditional smart home,rewiring is needed when equipment changes,its appearance is affected,the appliances in the system rely on the PC in the house,and upgrades and maintenance are not convenient. Therefore,a smart home control system controlled by PC or hand⁃held terminal was designed by combining the ZigBee wireless communication technology with the embedded ARM technology and Qt technology for human⁃computer in⁃teraction via the touch screen. Based on developing level and control ability of existing embedded ARM microprocessor,the re⁃search on network deployment based on ZigBee was carried out. The control and management of household electrical appliances are implemented through wireless network. Test results show that the system has good practicability,reliability and scalability.

  1. A Yaw Moment Counteracting Method for Humanoid Robot Based on Arms Swinging%基于双臂摆动的仿人机器人偏摆力矩矫正方法

    Institute of Scientific and Technical Information of China (English)

    付根平; 陈建平; 杨宜民

    2012-01-01

    针对仿人机器人在步行时产生的绕ZMP(零力矩点)的偏摆力矩导致其失稳甚至摔倒的问题,提出了一种基于双臂摆动的偏摆力矩矫正方法.分析了偏摆力矩产生的原因及其对机器人步行稳定性的影响;根据仿人机器人的连杆模型和手臂摆动的单摆模型,推导出了双臂摆动力矩的表达式,结合双臀摆动的示意图阐述了利用双臂摆动力矩矫正偏摆力矩的原理;采用三次样条插值规划出双臂参数化的摆动角轨迹.再通过穷举法遍历摆动角参数使双臂摆动力矩满足偏摆力矩的矫正要求.仿真结果表明,该方法不仪能较好地矫正偏摆力矩,使机器人实现稳定的步行,而且能保证双臂的摆动角轨迹单调、平滑和 周期性.%In view of the problems of unstable walking and even falling down caused by the yaw moment around zero moment point (ZMP) when the humanoid robot walks, a method for counteracting the yaw moment based on arms swinging is proposed. The cause of the yaw moment and its effect on the robot walking stability are analyzed. According to the link model of humanoid robot and the single pendulum model of arm swinging, the expression of moment generated by arms swinging is deduced, and the principle of counteracting yaw moment with the arms swinging moment is formulated by using the illustration of arms swinging. With the adoption of cubic spline interpolation, the parametric angle trajectories of arms swinging are planned. Through the exhaustive search algorithm, the angle parameters are traversed to guarantee the yaw moment to be mostly counteracted by the arms swinging moment. The simulation result verifies that the method can not only counteract the yaw moment greatly to ensure walking stability of the humanoid robot, but also guarantee the monotonicity, the smoothness and the periodicity of the angle trajectories of arms swinging.

  2. 基于ARM&Linux的手持式室内甲醛气体检测设备设计%Design of Hand-hold Indoor Formaldehyde Detector Based on ARM&Linux

    Institute of Scientific and Technical Information of China (English)

    万松峰

    2013-01-01

    采用电化学检测方法,以ARM&Linux嵌入式平台为核心,选用Membrapor公司的CH2O/M-10传感器设计了一种室内甲醛气体手持检测设备.详细介绍了该设备的硬件架构和软件设计,并与传统甲醛检测仪做了对比实验.实验结果表明,2种设备测定样品所得到的结果无显著性差异;手持检测设备检测快捷方便,可用于室内环境甲醛的检测.%The paper introduces the design of a new-style indoor formaldehyde detector. This detector is designed with the adoption of the ARM&Linux embedded platform together with CH20/M-10 electrochemical formaldehyde-sensor made in Membrapor. The hardware architecture and the software design process of formaldehyde detector are described. A test is carried out using the formaldehyde detector designed. Comparison is made between the formaldehyde detector designed and traditional formaldehyde detectors. Results show that the results obtained by the two measuring methods have no significant difference, and the detection by using formaldehyde detector is easy and quick,it can be used for the test of formaldehyde in indoor environment。

  3. 基于ARM7TDMI的嵌入式系统BootLoader的设计与实现%The Design and Realization of BootLoader Based on Imbedded System of ARM7TDMI

    Institute of Scientific and Technical Information of China (English)

    汪金宝; 陶玉贵; 陈付龙

    2011-01-01

    After the ARM7TDMI core board is designed, the USB interface expanded and increased, and BootLoader principle analyzed, detailed analysis and sophisticated design in a series of key technologies such as the start mode, interrupt handling, hardware initialization, booting linux kernel, etc eventually lead to a BoatLoader that supports the U-disk-loading embedded linux system image. By comparing the experimental results of the analysis, the BootLoader will better meet the requirements of users and developers.%通过设计ARM7TDMI核心板,扩展和增加USB接口,分析BootLoader原理,以及在启动模式、中断处理、硬件初始化和最终引导linux内核上的一系列关键技术,最终实现了一个支持从U盘加载嵌入式linux系统镜像的BootLoader,通过对实验结果的分析,该BootLoader能更好地满足用户和开发人员的要求.

  4. Fiducial marker-based correction for involuntary motion in weight-bearing C-arm CT scanning of knees. II. Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Jang-Hwan [Department of Radiology, Stanford University, Stanford, California 94305 and Department of Mechanical Engineering, Stanford University, Stanford, California 94305 (United States); Maier, Andreas; Keil, Andreas; McWalter, Emily J.; Gold, Garry E.; Fahrig, Rebecca [Department of Radiology, Stanford University, Stanford, California 94305 (United States); Pal, Saikat [Biomedical Engineering Department, California Polytechnic State University, San Luis Obispo, California 93407 (United States); Beaupré, Gary S. [Musculoskeletal Research Laboratory, VA Palo Alto Health Care System, Palo Alto, California 94304 (United States)

    2014-06-15

    Purpose: A C-arm CT system has been shown to be capable of scanning a single cadaver leg under loaded conditions by virtue of its highly flexible acquisition trajectories. In Part I of this study, using the 4D XCAT-based numerical simulation, the authors predicted that the involuntary motion in the lower body of subjects in weight-bearing positions would seriously degrade image quality and the authors suggested three motion compensation methods by which the reconstructions could be corrected to provide diagnostic image quality. Here, the authors demonstrate that a flat-panel angiography system is appropriate for scanning both legs of subjectsin vivo under weight-bearing conditions and further evaluate the three motion-correction algorithms using in vivo data. Methods: The geometry of a C-arm CT system for a horizontal scan trajectory was calibrated using the PDS-2 phantom. The authors acquired images of two healthy volunteers while lying supine on a table, standing, and squatting at several knee flexion angles. In order to identify the involuntary motion of the lower body, nine 1-mm-diameter tantalum fiducial markers were attached around the knee. The static mean marker position in 3D, a reference for motion compensation, was estimated by back-projecting detected markers in multiple projections using calibrated projection matrices and identifying the intersection points in 3D of the back-projected rays. Motion was corrected using three different methods (described in detail previously): (1) 2D projection shifting, (2) 2D deformable projection warping, and (3) 3D rigid body warping. For quantitative image quality analysis, SSIM indices for the three methods were compared using the supine data as a ground truth. Results: A 2D Euclidean distance-based metric of subjects’ motion ranged from 0.85 mm (±0.49 mm) to 3.82 mm (±2.91 mm) (corresponding to 2.76 to 12.41 pixels) resulting in severe motion artifacts in 3D reconstructions. Shifting in 2D, 2D warping, and 3D

  5. miR-19a: an effective regulator of SOCS3 and enhancer of JAK-STAT signalling.

    Directory of Open Access Journals (Sweden)

    Aideen S Collins

    Full Text Available Suppressors of cytokine signalling (SOCS proteins are classic inhibitors of the Janus kinase-signal transducer and activator of transcription (JAK-STAT pathway. Many cytokines and pathogenic mediators induce expression of SOCS, which act in a negative feedback loop to inhibit further signal transduction. SOCS mRNA expression is regulated by DNA binding of STAT proteins, however, their post-transcriptional regulation is poorly understood. microRNAs (miRNAs are small non-coding RNAs that bind to complementary sequences on target mRNAs, often silencing gene expression. miR-19a has been shown to regulate SOCS1 expression during mutiple myeloma and be induced by the anti-viral cytokine interferon-(IFN-α, suggesting a role in the regulation of the JAK-STAT pathway. This study aimed to identify targets of miR-19a in the JAK-STAT pathway and elucidate the functional consequences. Bioinformatic analysis identified highly conserved 3'UTR miR-19a target sequences in several JAK-STAT associated genes, including SOCS1, SOCS3, SOCS5 and Cullin (Cul 5. Functional studies revealed that miR-19a significantly decreased SOCS3 mRNA and protein, while a miR-19a antagomir specifically reversed its inhibitory effect. Furthermore, miR-19a-mediated reduction of SOCS3 enhanced IFN-α and interleukin (IL-6 signal transduction through STAT3. These results reveal a novel mechanism by which miR-19a may augment JAK-STAT signal transduction via control of SOCS3 expression and are fundamental to the understanding of inflammatory regulation.

  6. Hello to Arms

    Science.gov (United States)

    2005-01-01

    This image highlights the hidden spiral arms (blue) that were discovered around the nearby galaxy NGC 4625 by the ultraviolet eyes of NASA's Galaxy Evolution Explorer. The image is composed of ultraviolet and visible-light data, from the Galaxy Evolution Explorer and the California Institute of Technology's Digitized Sky Survey, respectively. Near-ultraviolet light is colored green; far-ultraviolet light is colored blue; and optical light is colored red. As the image demonstrates, the lengthy spiral arms are nearly invisible when viewed in optical light while bright in ultraviolet. This is because they are bustling with hot, newborn stars that radiate primarily ultraviolet light. The youthful arms are also very long, stretching out to a distance four times the size of the galaxy's core. They are part of the largest ultraviolet galactic disk discovered so far. Located 31 million light-years away in the constellation Canes Venatici, NGC 4625 is the closest galaxy ever seen with such a young halo of arms. It is slightly smaller than our Milky Way, both in size and mass. However, the fact that this galaxy's disk is forming stars very actively suggests that it might evolve into a more massive and mature galaxy resembling our own. The armless companion galaxy seen below NGC 4625 is called NGC 4618. Astronomers do not know why it lacks arms but speculate that it may have triggered the development of arms in NGC 4625.

  7. Arménie

    Directory of Open Access Journals (Sweden)

    François Verdier

    2012-04-01

    Full Text Available L’Arménie est une petite république du Caucase, à la limite sud–est de l’Europe, qui a gagné son autonomie en 1990 après l’ouverture du bloc soviétique. Le nouveau Ministère du Patrimoine a sollicité la coopération de la France pour mettre en place une nouvelle politique culturelle. Tout d’abord, une évaluation sur place de la situation dans les domaines des monuments historiques, de l’archéologie et de l’Inventaire a permis d’envisager les réponses à proposer. Pour la demande d’informatisation des dossiers d’inventaire déjà réalisés sous l’autorité de l’Académie de Saint–Petersbourg, nous avons proposé de former des chercheurs arméniens aux méthodes et techniques de l’Inventaire général. L’accueil d’une stagiaire pendant trois mois au service régional de l’Inventaire de Haute–Normandie a été suivi par la mise en place d’un équipement informatique à Yérévan, puis par l’accueil et la formation de techniciens informaticiens et photographes arméniens. De retour dans leur pays ils ont commencé à remettre en place un service d’inventaire dont le programme comprend la création d’une base de données patrimoniales, le recensement de la ville de Yérévan, la numérisation d’images pour la publication d’un indicateur du patrimoine et la préparation de dossiers de protection au titre du patrimoine mondial.The Armenian heritage comprises both archaeological remains of towns destroyed by never–ending wars and a number of old churches from the eleventh and twelfth centuries. Yerevan, the capital of Armenia, was founded three thousand years ago and is one of Europe’s oldest capitals. From 1925 it has developed according to an ambitious urban planning project. After the major political upheavals of 1991, a special ministry was created to look after the architectural and movable heritage of the country and to promote the Armenian national identity. A mission in Yerevan was

  8. Characterization of an Ac transposon system based on apt1-m1 (Ac) on the long arm of maize chromosome 9.

    Science.gov (United States)

    Wang, Fei; Li, Pengfei; Tang, Yuanping; Fan, Jun; Xu, Dabin; Guo, Shengming; Xu, Zhengkai; Song, Rentao

    2012-09-01

    Activator/Dissociation (Ac/Ds) transposable elements have been used in maize insertional mutagenesis as a complement to Mutator (Mu). In this study, to further improve the efficiency of the Ac/Ds mutagenesis system, we adopted apt1-m1 (Ac) on the long arm of chromosome 9 (9L) as a donor Ac to create an Ac insertion library. This system is based on the negative selection pressure against the donor Ac, and it was highly efficient for isolating new transposition events. We obtained 9,625 transposition events from 1083 F1 ears with an average transposition rate of 8.66 % (rates ranged from 1.11 to 29.73 %). We also adopted a modified PCR-based genome walking strategy to improve the efficiency of the new method for isolating transposon-flanking sequences. This method is more efficient than the Southern-based method that was used in previous studies. A validation step was developed to distinguish transposon tags derived from newly transposed Ac or Ds elements. Using this PCR-based method, we isolated 67 inheritable flanking sequences from the apt1-m1 (Ac) transposition library; of these, 51 were confirmed as tr-Ac-flanking sequences and 11 were tr-Ds-flanking sequences. Similar to other Ac donors from different loci, the apt1-m1 (Ac) system also exhibited a preference for short distance transposition. In this study, we have further improved the Ac mutagenesis system in maize for gene isolation and functional genomics studies.

  9. 基于ARM的温度监控系统设计%Design of the temperature monitoring system based on ARM

    Institute of Scientific and Technical Information of China (English)

    陈莉莉; 杨雪莹; 周宁轩

    2012-01-01

    提出了一种实时操作系统,采用高速ARM嵌入式微处理器和数字温度传感器(DS18B20)进行的温度采集及监测实验.文中主要采用嵌入式实时操作系统Windows CE作为软件平台,用低功耗、高性能的Samsung公司的32位ARM微处理器S3C2440为主控芯片,以TE2440开发板作为硬件平台,设计了一个温度监控系统.其主要功能模块有温度信号采集模块、ARM控制模块、数据读取模块和显示模块.整个系统使用windows ce操作系统下的EVC编译软件进行设计,采用C++语言编程实现数据的采集、读取、传输以及LCD显示,设计灵活,调试简单.%This thesis designed a sampling stakeout-measure system that based on real-time operation system. It includes a high-speed microprocessor and digital temperature sensor (DS18B20). This design adopt embedded real-time operation system Windows CE as software platform, using 32 bit ARM core processor S3C2440 which is low consumed energy and high reliability as controlling chip, using the TE2440 development board as the hardware platform, designed a temperature monitoring system. Its main function modules are signal pickup module, ARM control module, data reading block and display module. The system uses Windows CE operating system under the EVC compiler software to design, using C++ programming language for data collection, reading, transmission, and LCD display. Meanwhile, it' s very flexibility and easy adjustment.

  10. 基于ARM-Linux的便携式红外测油仪的设计%Design on Portable Infrared Oil Content Analyzer Based on ARM-Linux

    Institute of Scientific and Technical Information of China (English)

    邵志鹏; 王双保; 李学青

    2015-01-01

    Due to traditional oil content instrumentation is in-large volume and also requires host computer ,a portable infrared oil content analyzer based on ARM-Linux was developed in this paper.S3C2440 was used as the main controller.The LCD was used as display that depends on MiniGui graphical user interface in an open-source Linux system.By the LCD touch screen,it can control the whole instrument,such as collection,storage and display.The system consists of light source,spectrum module,signal acquisition module,A/D converter module and the ARM control module.In order to improve the detection precision and signal an-ti-interference ability,lock-in amplifier technology was used in signal modulation modules.The new equipment is small ,highly sta-ble,and has high repeatability and high repeatability.It is in line with national standards and is very hopeful in application.%针对传统油类分析检测仪器体积大,需要上位机进行协作的特点,研制了基于ARM-Linux的便携式红外测油仪。该仪器采用S3C2440为主控器,在嵌入式Linux系统下开发了MiniGUI图形用户界面,通过液晶触摸屏来实现对仪器的控制、采集、存储和显示。该系统的硬件由光源、分光模块、信号调制采集模块,A/D转换模块和ARM控制处理模块组成。为了提高信号的精度和采集的抗干扰能力,信号调制模块采用了锁相放大技术,从而获得了较好的检测结果。设计的仪器体积小、稳定性高、重复性好、操作简单、符合国家标准,具有较好的推广价值。

  11. Solar Automatic Tracking Double Fuzzy Control System Based on ARM%基于ARM的太阳自动跟踪双模糊控制系统

    Institute of Scientific and Technical Information of China (English)

    刘景艳; 李玉东; 杨晓邦

    2012-01-01

    针对太阳自动跟踪系统采用常规的PID控制器存在着跟踪精度低,超调量大等缺点,提出了一种基于ARM的太阳自动跟踪双模糊控制系统的设计方案;以32位ARM嵌入式微处理器为核心,采用光电跟踪和太阳运动轨迹跟踪相结合的混合跟踪模式;在光电跟踪模式下.采用模糊控制;在太阳运动轨迹跟踪模式下,采用模糊PID分段式控制,并依据光强的大小自动切换控制器;采用两个同样规格的太阳能电池板,分别采用固定安装和太阳自动跟踪系统测试太阳能电池板的采光强度;实验结果表明,该系统具有较高的跟踪精度,实现了对太阳全天候的跟踪,有效地提高了光电转换效率.%The solar automatic tracking system adopting the conventional PID controller has low tracking precision and big overshoot. The solar automatic tracking double fuzzy control system based on ARM is put forward. Embedded microcontroller 32-bit ARM processor is the core. A kind of mixed tracking mode is adopted, and it combines photoelectric tracking mode and solar trajectory tracking mode. The double fuzzy control method is presented, the fuzzy control method is adopted in photoelectric tracking mode, and in solar trajectory tracking mode, the fuzzy PID segmented tracking control method is put forward. And the controller can be automatically switched control mode according to light intensity. The fixed installation and the automatic tracking system are respectively used to test the solar panels daylighting strength. The experimental results show that the solar automatic tracking system is possessed of high tracking precision, realizes the sun round-the-clock tracking and effectively improves the photoelectric conversion efficiency.

  12. 基于ARM的无人水面航行器开发与试验%Development and Experiments of Unmanned Surface Vehicle Based on ARM

    Institute of Scientific and Technical Information of China (English)

    张文静; 高天德; 杨跃斌

    2013-01-01

    USV,short form of Unmanned Surface Vehicle,as one of the important instruments for people to develop and use ocean resources,is becoming more and more popular because of its advantages such as unmanned.,miniaturization and intelligentialize.This system is based on NUC140RE3AN,which is embeded with ARM CortexTM-M0,and can be navigated in independent and half-independent mode,which improved the practicality of the vehicle.This USV is located by high-performance GPS,use the feedback of the attitude sensor to realize closed-loop control and can lock the heading angle.At the same time,the PC control software developed by the graphic programming language LabVIEW can switch the two navigation modes,calculate various parameters in time and draw the track of the USV.%无人水面航行器(USV),简称无人船,作为人类开发和利用海洋的重要工具之一,凭借其模块化、无人化、小型化、智能化等优点,受到越来越多的重视.该系统基于32位内嵌ARM CortexTM-M0核的NUC140RE3AN,提供自主和半自主两种驾驶模式,提高了航行器的实用性,利用高性能GPS进行定位,通过姿态传感器的反馈信息进行闭环控制,实现航向锁定.同时,利用图形化语言LabVIEW编写的上位机控制软件,能实现两种驾驶模式的切换,实时计算各种参数,绘制航迹.

  13. Microwave assisted one-pot synthesis of novel molecular clefts with only one chiral arm based on deoxycholic acid

    Institute of Scientific and Technical Information of China (English)

    Bi Tao Zeng; Zhi Gang Zhao; Xing Li Liu; Yun Shi

    2008-01-01

    A rapid, safe, and efficient method for the synthesis of novel molecular clefts based" on deoxycholic acid was reported. Sevennew molecular clefts have been synthesized in good yields (89-98%). This method proved to be extremely simple and highlyefficient. The structures of these receptors were confirmed by 1H NMR, IR, MS spectra and elemental analysis.

  14. Phase II, two-arm RTOG trial (94-11) of bischloroethyl-nitrosourea plus accelerated hyperfractionated radiotherapy (64.0 or 70.4 Gy) based on tumor volume (> 20 or ≤ 20 cm2, respectively) in the treatment of newly-diagnosed radiosurgery-ineligible glioblastoma multiforme patients

    International Nuclear Information System (INIS)

    Purpose: To compare survivorship, and acute and delayed toxicities following radiation therapy (RT) of radiosurgery-ineligible glioblastoma multiforme (GBM) patients treated with tumor volume-influenced, high-dose accelerated, hyperfractionated RT plus bischloroethyl-nitrosourea (BCNU), using prior RTOG malignant glioblastoma patients as historical controls. Methods and Materials: One hundred four of 108 patients accrued from June 1994 through May 1995 from 26 institutions were analyzable. Patients were histologically confirmed with GBM, and previously untreated. Treatment assignment (52 patients/arm) was based on tumor mass (TM), defined as the product of the maximum diameter and greatest perpendicular dimension of the titanium-gadolinium-enhanced postoperative MRI: Arm A, 64 Gy, TM > 20 cm2; or Arm B, 70.4 Gy, TM ≤ 20 cm2. Both Arms A and B received BCNU (80 mg/m2, under hyperhydration) days 1-3, 56-58, then 4 cycles, each 8 weeks, for a total of 6 treatment series. Results: During the 24 months immediately post-treatment, the overall median survival was 9.1 months in Arm A (64 Gy) and 11.0 months in Arm B (70.4 Gy). Median survival in recursive partitioning analysis (RPA) Class III/IV was 10.4 months in Arm A and 12.2 months in Arm B, while RPA Class V/VI was 7.6 months in Arm A and 6.1 months in Arm B. There were no grade 4 neurological toxicities in Arm A; 2 grade 4 neurological toxicities were observed in Arm B (1 motor deficit, 1 necrosis at 157 days post-treatment). Conclusion: This strategy of high-dose, accelerated hyperfractionated radiotherapy shortens overall RT treatment times while allowing dose escalation, and it provides the potential for combination with currently available, as well as newer, chemotherapy agents. Survival is comparable with previously published RTOG data, and toxicities are within acceptable limits.

  15. An Inverter With New Topology and ARM-Based Control%基于ARM的新型拓扑结构的逆变电源

    Institute of Scientific and Technical Information of China (English)

    郑玉莲; 田晓燕; 孙频东

    2012-01-01

    A new topological structure of photovohaic inverter is proposed. It has a simple structure, and has the ability to step up/down conversion and adapt to wide voltage range compared with the one-stage PV grid-connected inverter. Then, one-cycle control based on ARM is introduced with lower power consumption, smaller size and higher accuracy compared with the traditional one-cycle control. Finally, the control strategy is confirmed to be correct and effective by the results of simulation and experiment.%提出了一种光伏逆变电源的新型拓扑结构,该结构简单,相对于单级式并网逆变器具有升、降压的特性,能够适应较宽的电压范围.介绍了基于ARM实现的数字单周期控制,与传统的模拟单周期控制相比,具有功耗更低、体积更小、精确度更高等优点.最后通过仿真和实验验证了该方案的正确性与有效性.

  16. 基于ARM平台的电子海报系统的设计%Design of the Electronic Poster System Based on ARM Platform

    Institute of Scientific and Technical Information of China (English)

    肖思成; 董磊; 查艳芳; 刘正

    2015-01-01

    We designed an electronic poster system based on ARM. It can automatically load USB flash disk and transfer electronic poster files(pictures) from it. Pictures will be unzipped by Libjpg and displayed by Framebuffer. This system can display multi-effects of multi-posters, play music, and compatible with different types of display screen. It is one of the typical application of new media.%本文设计完成的是一款基于ARM平台的电子海报系统的设计。此设计可以实现U盘自动挂载,并从U盘中获取电子海报(即图片),同时通过进程通信实现图片信息的发送和接收。在接收到图片之后可以通过Libjpg进行解压,并通过Framebuffer进行显示。此设计可以实现多张电子海报的多效果展示,音乐的播放,以及不同类型显示屏的显示等功能,是新媒体的典型应用之一。

  17. Syntheses, structural variations and fluorescence studies of two dinuclear zinc(II) complexes of a Schiff base ligand with an extended carboxylate side arm

    Science.gov (United States)

    Shit, Shyamapada; Sasmal, Ashok; Dhal, Piu; Rizzoli, Corrado; Mitra, Samiran

    2016-03-01

    A potentially tetradentate Schiff base ligand containing carboxylic acid group, HL, (E)-2-((pyridin-2-yl)methyleneamino)-5-chlorobenzoic acid is synthesized and characterized. Reaction of HL with hydrated zinc(II) trichloroacetate and zinc(II) trifluoroacetate under similar reaction condition yields two discrete dinuclear complexes, [Zn(L)(Cl)]2 (1) and [Zn(L)(CF3COO)]2 (2) and characterized by different physicochemical methods. Single crystal X-ray structural characterization reveals different ligating properties of the coordinated anionic ligand (L-) in its zinc(II) complexes. The side arm carboxylate of L- shows μ1,3-carboxylato-bridging mode in 1 and connects zinc(II) atoms in syn-anti fashion while it exhibits a μ1,1-carboxylato-bridging mode in 2. The metal ions display distorted square pyramidal geometries in both the structures and associated with different degrees of distortions. The fluorescence spectra of HL and its zinc(II) complexes recorded in methanol at room temperature which reveal the enhancement of emission intensity for the complexes compared to that of the free ligand. Thermogravimetric analyses (TGA) reveal high thermal stabilities of the complexes.

  18. Design of control for household cleaning robot based on ARM%基于arm的家用清洁机器人的控制系统设计

    Institute of Scientific and Technical Information of China (English)

    张强; 陈奕梅

    2014-01-01

    文章提出了一种基于ARM处理器的家用清洁机器人控制系统,包括硬件设计和软件设计。硬件部分包括主控器模块、电源及欠压检测模、传感器模块、人机交互模块、驱动模块以及清洁模块。软件部分设计了清洁机器人的主要控制流程。该控制系统以通用性和功能完备为目标,使机器人具备智能清洁能力。%This paper presents a kind of control system of home cleaning robot based on ARM processor which includes hardware and software design. The hardware part includes main controller module, power supply with undervoltage detection module, sensor module, human-computer interaction module, driving module and cleaning module. The software part designs the staple control procedure of cleaning robot. This control system aims at universal and integrated functions which ensure the robot have the ability to clean intelligently.

  19. Four-rotor unmanned aerial vehicles control system based on ARM%基于ARM的四旋翼无人飞行器控制系统

    Institute of Scientific and Technical Information of China (English)

    刘乾; 孙志锋

    2011-01-01

    为改变传统以单片机为处理器的四旋翼无人飞行器的控制方式,提出了一种基于嵌入式ARM的飞行控制系统的设计和实现方案.详细介绍了控制系统的总体构成以及硬、软件设计方法,包括传感器模块、电机模块、无线通信模块.试验结果表明,该设计结合嵌入式实时操作系统,保证了系统的高可靠性和高实时性,能满足飞行器起飞、悬停、降落等飞行模态的控制要求.%In order to change the conventional control of four-rotor unmanned aerial vehicles using microcontroller as the processor,a solution of flight control system based on embedded ARM was presented. The main function of the system, the hardware structure and the software design were discussed in detail, including the sensor module, the motor module, the wireless communication module. With embedded real time operating system to ensure the system' s high reliability and real-time performance, the experiments results show that the requirements of flight mode are satisfied,including taking off,hovering,and landing and so on.

  20. Suppressor of cytokine signaling 2 (SOCS2) negatively regulates the expression of antimicrobial peptides by affecting the Stat transcriptional activity in shrimp Marsupenaeus japonicus.

    Science.gov (United States)

    Sun, Jie-Jie; Lan, Jiang-Feng; Xu, Ji-Dong; Niu, Guo-Juan; Wang, Jin-Xing

    2016-09-01

    The suppressor of cytokine signaling (SOCS) family is a kind of negative regulators in the Janus kinase/signal transducer and activator of transcription (Jak/Stat) pathway in mammals and Drosophila. In kuruma shrimp, Marsupenaeus japonicus, SOCS2 is identified and its expression can be stimulated by peptidoglycan and polycytidylic acid. However, if SOCS2 participates in regulating Jak/Stat pathway in shrimp still needs further study. In this study, SOCS2 with Src homology 2 domain and SOCS box was identified in kuruma shrimp, M. japonicus. SOCS2 existed in hemocytes, heart, hepatopancreas, gills, stomach, and intestine, the expression of SOCS2 was upregulated significantly in the hemocytes and intestine of shrimp challenged with Vibrio anguillarum at 6 h. To analyze SOCS2 function in shrimp immunity, bacterial clearance and survival rate were analyzed after knockdown of SOCS2 in shrimp challenged with V. anguillarum. Results showed that bacterial clearance increased, and the survival rate improved significantly comparing with controls. The SOCS2 was expressed in Escherichia coli and the recombinant SOCS2 was injected into shrimp, and Stat phosphorylation and translocation were analyzed. The result showed that "overexpression" of SOCS2 declined Stat phosphorylation level and inhibited Stat translocation into the nucleus. After knockdown of SOCS2 in shrimp prior to V. anguillarum infection, the expression level of antimicrobial peptides, including anti-lipopolysaccharide factors C1, C2 and D1, and Crustin I was upregulated significantly, and the expression of the AMPs was declined after recombinant SOCS2 injection. The SOCS2 expression was also decreased in Stat-knockdown shrimp challenged by V. anguillarum at 6 and 12 h. Therefore, SOCS2 negatively regulates the AMP expression by inhibiting Stat phosphorylation and translocation into nucleus in shrimp, meanwhile, SOCS2 expression was also regulated by Jak/Stat pathway.

  1. 基于ARM7 S3C44BOX嵌入式系统GUI设计%GUI design of embedded system based on ARM7 S3C44BOX

    Institute of Scientific and Technical Information of China (English)

    陈冰峰; 姜卓; 王剑钢

    2004-01-01

    人机界面(GUI)的设计是计算机科学的重要部分,它从系统的一个附属部分已经发展为一门独立的科学,本文所述的GUI设计是应用于嵌入式系统,介绍了硬件平台的搭建(基于ARM7 S3C44BOX),图形平台设计以及虚实屏切换,界面布局,控件设计,窗口刷新等实用技术,具有很强的实用性.

  2. High Accuracy Temperature Control System in Cliniea Chemistry Analyzer Based on ARM9%基于ARM9的高精度生化分析仪温度控制系统设计

    Institute of Scientific and Technical Information of China (English)

    刘克平; 曹书权; 李岩

    2008-01-01

    全自动生化分析仪开发研制中的一个重要组成部分是温控系统的设计,被检样品和试剂只有在指定的温度下检测才能保证生化检验结果的可靠性.设计了一种基于ARM9处理器的温控系统,结合嵌入式Linux操作系统,实现模糊自整定PID控制算法,具有控制精度高,响应快,稳定性、实时性好等优点.

  3. Intelligent Control System for Encapsulation Machine Based on ARM7%基于ARM7的表贴元件包装机智能控制系统

    Institute of Scientific and Technical Information of China (English)

    高岩; 马丽娟

    2008-01-01

    根据我国当前表帖元件包装机温度控制精度及封装效率都较低的现状,设计了基于ARM7处理器S3C44B0X的智能控制系统.介绍了该控制系统的硬件电路组成并给出了主程序流程,针对温度控制提出了带有加权因子的模糊控制算法.实际应用表明,该智能系统的控制效果优于常规控制系统.

  4. Design and Engineering of a Chess-Robotic Arm

    CERN Document Server

    Elouafiq, Ali

    2012-01-01

    In the scope of the "Chess-Bot" project, this study's goal is to choose the right model for the robotic arm that the "the Chess-Bot" will use to move the pawn from a cell to another. In this paper, there is the definition and the structure of a robot arm. Also, the different engineering and kinematics fundamentals of the robot and its components will be detailed. Furthermore, the different structures of robotic arms will be presented and compared based on different criteria. Finally, a model for "the Chess-Bot" arm will be synthesized based on accurate algorithms and equations.

  5. The topological quantum phase transitions in Lieb lattice driven by the Rashba SOC and exchange field

    Science.gov (United States)

    Wang, Rui; Qiao, Qian; Wang, Bin; Ding, Xiu-Huan; Zhang, Yi-Fu

    2016-09-01

    The quantum spin Hall (QSH) effect and the quantum anomalous Hall (QAH) effect in Lieb lattice are investigated in the presence of both Rashba spin-orbit coupling (SOC) and uniform exchange field. The Lieb lattice has a simple cubic symmetry, which is characterized by the single Dirac-cone per Brillouin zone and the middle flat band in the band structure. The intrinsic SOC is essentially needed to open the full energy gap in the bulk. The QSH effect could survive even in the presence of the exchange field. In terms of the first Chern number and the spin Chern number, we study the topological nature and the topological phase transition from the time-reversal symmetry broken QSH effect to the QAH effect. For Lieb lattice ribbons, the energy spectrum and the wave-function distributions are obtained numerically, where the helical edge states and the chiral edge states reveal the non-trivial topological QSH and QAH properties, respectively.

  6. Data-Driven Prediction of Thresholded Time Series of Rainfall and SOC models

    CERN Document Server

    Deluca, Anna; Corral, Alvaro

    2014-01-01

    We study the occurrence of events, subject to threshold, in a representative SOC sandpile model and in high-resolution rainfall data. The predictability in both systems is analyzed by means of a decision variable sensitive to event clustering, and the quality of the predictions is evaluated by the receiver operating characteristics (ROC) method. In the case of the SOC sandpile model, the scaling of quiet-time distributions with increasing threshold leads to increased predictability of extreme events. A scaling theory allows us to understand all the details of the prediction procedure and to extrapolate the shape of the ROC curves for the most extreme events. For rainfall data, the quiet-time distributions do not scale for high thresholds, which means that the corresponding ROC curves cannot be straightforwardly related to those for lower thresholds.

  7. System Design of a Trusted SoC and Detailed Analysis of its Secure State Transitions

    Directory of Open Access Journals (Sweden)

    Xianwen Yang

    2010-11-01

    Full Text Available According to the relevant criterion and principle for designing and evaluating various trusted computing chips, we have proposed a new trusted SoC chip, and have given the implementation of its basic functional modules. In detail, we have discussed the design of the trusted SoC security architecture and the main module functional modules such as microprocessor, cryptographic function module, security management module, input/output interface, along with the most important memory management unit. Moreover, we have discussed reliability of relevant parameters and transfer strategy for trusted root in chip development and application, together with the simulation and validation of corresponding functions. At last, we point out that one of the most important further research directions is the trusted measurement of dynamic data and software running in security environment.

  8. Portable and Smart Ultrasonic Fluid Level Meter Based on ARM Cortex- M3%基于ARM Cortex - M3便携式智能超声波液位计

    Institute of Scientific and Technical Information of China (English)

    张根宝; 李秀平; 庞苏娟

    2012-01-01

    为了准确测量环境恶劣工业生产中的液位以保证生产效率,通过研究超声波测距工作原理,采用新型高性能、低功耗和低成本的ARM - Cortex M3内核微控制器,结合超声波技术、红外传输与DS1820温度补偿修正设计了一款便携式智能超声波液位计.其采用的先进微处理器以及无线传输的方式,简化了硬件电路,优化了软件编程.研究表明:该液位计设计提高了液位测量精度、实时性、灵活性与快速性.%To measure fluid level in poor industrial production conditions accurately for ensuring production efficiency,a portable intelligent correction ultrasonic fluid level meter was designed by studying the working principle of ultrasonic distance measurement. New high-performance, low power and low-cost ARM-Cortex M3 microcontroller core, combined with ultrasonic technology, infrared transmission and DS1820 temperature compensation were used in the level meter. The use of advanced microprocessor and wireless transmission, simplified hardware and optimized software programming. Studies show that the design of this fluid level gauge improved accuracy,timeliness,flexibility and rapidity of the level measurement.

  9. Reducing substance involvement in college students: a three-arm parallel-group randomized controlled trial of a computer-based intervention.

    Science.gov (United States)

    Christoff, Adriana de Oliveira; Boerngen-Lacerda, Roseli

    2015-06-01

    The prevalence of alcohol and other drug use is high among college students. Reducing their consumption will likely be beneficial for society as a whole. Computer and web-based interventions are promising for providing behaviorally based information. The present study compared the efficacy of three interventions (computerized screening and motivational intervention [ASSIST/MBIc], non-computerized screening and motivational intervention [ASSIST/MBIi], and screening only [control]) in college students in Curitiba, Brazil. A convenience sample of 458 students scored moderate and high risk on the ASSIST. They were then randomized into the three arms of the randomized controlled trial (ASSIST/MBIc, ASSIST/MBIi [interview], and assessment-only [control]) and assessed at baseline and 3 months later. The ASSIST involvement scores decreased at follow-up compared with baseline in the three groups, suggesting that any intervention is better than no intervention. For alcohol, the specific involvement scores decreased to a low level of risk in the three groups and the MBIc group showed a positive outcome compared with control, and the scores for each question were reduced in the two intervention groups compared to baseline. For tobacco, involvement scores decreased in the three groups, but they maintained moderate risk. For marijuana, a small positive effect was observed in the ASSIST/MBIi and control groups. The ASSIST/MBIc may be a good alternative to interview interventions because it is easy to administer, students frequently use such computer-based technologies, and individually tailored content can be delivered in the absence of a counselor. PMID:25679364

  10. SNPase-ARMS qPCR: Ultrasensitive Mutation-Based Detection of Cell-Free Tumor DNA in Melanoma Patients

    OpenAIRE

    Stadler, Julia; Eder, Johanna; Pratscher, Barbara; Brandt, Sabine; Schneller, Doris; Müllegger, Robert; Vogl, Claus; Trautinger, Franz; Brem, Gottfried; Burgstaller, Joerg P.

    2015-01-01

    Cell-free circulating tumor DNA in the plasma of cancer patients has become a common point of interest as indicator of therapy options and treatment response in clinical cancer research. Especially patient- and tumor-specific single nucleotide variants that accurately distinguish tumor DNA from wild type DNA are promising targets. The reliable detection and quantification of these single-base DNA variants is technically challenging. Currently, a variety of techniques is applied, with no appar...

  11. Implementation of a Capacitor Less Low Dropout Voltage Regulator on Chip (SOC)

    OpenAIRE

    Shailika Sharma; Himani Mittal

    2014-01-01

    — In this paper we have implemented a linear voltage low drop out regulator for efficient power management considering the fact in mind that voltage regulators provide a constant voltage supply to the circuits. We replace the common drain by common source pass element to improve efficiency and reduce the voltage drop across the device. This research paper includes the process to remove the external capacitor allowing for greater power system (soc) application. A compensation scheme is present...

  12. Japanese Encephalitis Virus exploits the microRNA-432 to regulate the expression of Suppressor of Cytokine Signaling (SOCS) 5.

    Science.gov (United States)

    Sharma, Nikhil; Kumawat, Kanhaiya L; Rastogi, Meghana; Basu, Anirban; Singh, Sunit K

    2016-01-01

    Japanese encephalitis virus (JEV) is a plus strand RNA virus, which infects brain. MicroRNAs are regulatory non-coding RNAs which regulate the expression of various genes in cells. Viruses modulate the expression of various microRNAs to suppress anti-viral signaling and evade the immune response. SOCS (Suppressor of cytokine signalling) family of proteins are negative regulators of anti-viral Jak-STAT pathway. In this study, we demonstrated the regulatory role of SOCS5 in Jak-STAT signaling and its exploitation by JEV through a microRNA mediated mechanism. JEV infection in human brain microglial cells (CHME3) downregulated the expression of miR-432, and upregulated SOCS5 levels. SOCS5 was validated as a target of miR-432 by using 3'UTR clone of SOCS5 in luciferase vector along with miR-432 mimic. The overexpression of miR-432 prior to JEV infection enhanced the phosphorylation of STAT1 resulting into increased ISRE activity and cellular inflammatory response resulting into diminished viral replication. The knockdown of SOCS5 resulted into increased STAT1 phosphorylation and suppressed viral replication. JEV infection mediated downregulation of miR-432 leads to SOCS5 upregulation, which helps the virus to evade cellular anti-viral response. This study demonstrated that JEV utilizes this microRNA mediated strategy to manipulate cellular immune response promoting JEV pathogenesis. PMID:27282499

  13. [Impact of land use change and cultivation measures on soil organic carbon (SOC) and its 13C values].

    Science.gov (United States)

    Meng, Fan-qiao; Kuang, Xing; Du, Zhang-liu; Wu, Wen-liang; Guo, Yan-bin

    2010-08-01

    In Quzhou County, Hebei Province where now intensive farming system is operated, original grassland and farming land under different tillage, crop straw return and fertilization measures were studied using isotope carbon for the analysis of the impact on soil organic carbon (SOC) properties. The research indicated that after change into farmland (34 years), SOC is significantly reduced and for 1 m of soil layer, the scope of reduction is from 13.3%-35% and this decrease happens in 0-40 cm of soil layer. After 8 years of fertilization, SOC can be increased at 0.83 g x kg(-1). No-tillage can significantly increase the SOC especially in 0-10 cm but plough will increase the SOC at 10-15 cm and 15-20 cm. Change of delta13 C of SOC due to land use change mainly happens in 0-20 cm, where input of organic materials from maize stored. In soil layer of 0-5 cm, only maximum 18% of SOC is from crop residues and in 15-20 cm, this percentage is about 5%.

  14. Gypenoside Attenuates β Amyloid-Induced Inflammation in N9 Microglial Cells via SOCS1 Signaling

    Directory of Open Access Journals (Sweden)

    Hui Cai

    2016-01-01

    Full Text Available Reducing β amyloid- (Aβ- induced microglial activation is believed to be effective in treating Alzheimer’s disease (AD. Microglia can be activated into classic activated state (M1 state or alternative activated state (M2 state, and the former is harmful; in contrast, the latter is beneficial. Gypenoside (GP is the major bioactive constituent of Gynostemma pentaphyllum, a traditional Chinese herb medicine. In this study, we hypothesized that GP attenuates Aβ-induced microglial activation by ameliorating microglial M1/M2 states, and the process may be mediated by suppressor of cell signaling protein 1 (SOCS1. In this study, we found that Aβ exposure increased the levels of microglial M1 markers, including iNOS expression, tumor necrosis factor α (TNF-α, interleukin 1β (IL-1β, and IL-6 releases, and coadministration of GP reversed the increase of M1 markers and enhanced the levels of M2 markers, including arginase-1 (Arg-1 expression, IL-10, brain-derived neurotrophic factor (BDNF, and glial cell-derived neurotrophic factor (GDNF releases in the Aβ-treated microglial cells. SOCS1-siRNA, however, significantly abolished the GP-induced effects on the levels of microglial M1 and M2 markers. These findings indicated that GP attenuates Aβ-induced microglial activation by ameliorating M1/M2 states, and the process may be mediated by SOCS1.

  15. Development of a Danish national vis—NIR soil spectral library for SOC determination

    DEFF Research Database (Denmark)

    Knadel, Maria; Deng, Fan; Greve, Mogens Humlekrog;

    The development of a soil spectral library is a prerequisite for using vis-NIR spectroscopy for soil analysis. The aim of this study is twofold: (i) to create a Danish national soil library with a main focus on building a model for SOC determination and (ii) to test the feasibility of using...... the library to predict SOC from new dry and moist samples, before and after spiking the library with additional local samples. Soils spectra were obtained using Labspec 5100 (350-2500 nm) vis-NIR sensor. The best validation model resulted in RMSEP value of 0.31, R2 value of 0.79 and RPD value of 2.......3. The prediction on independent data resulted in very similar results: RMSEP=0.29, R2 of 0.81 and RPD of 2.4. Before spiking the library moderate SOC predictions were obtained for the new dry soils. Prediction on moist samples however, required prior spiking the global library with moist samples from the new...

  16. Efficiency enhancement of perovskite solar cells via incorporation of phenylethenyl side arms into indolocarbazole-based hole transporting materials

    Science.gov (United States)

    Petrikyte, Ieva; Zimmermann, Iwan; Rakstys, Kasparas; Daskeviciene, Maryte; Malinauskas, Tadas; Jankauskas, Vygintas; Getautis, Vytautas; Nazeeruddin, Mohammad Khaja

    2016-04-01

    Small-molecule hole transporting materials based on an indolocarbazole core were synthesized and incorporated into perovskite solar cells, which displayed a power conversion efficiency up to 15.24%. The investigated hole transporting materials were synthesized in three steps from commercially available and relatively inexpensive starting materials without using expensive catalysts. Various electro-optical measurements (UV-vis, CV, hole mobility, DSC, TGA, ionization potential) have been carried out to characterize the new hole transporting materials.Small-molecule hole transporting materials based on an indolocarbazole core were synthesized and incorporated into perovskite solar cells, which displayed a power conversion efficiency up to 15.24%. The investigated hole transporting materials were synthesized in three steps from commercially available and relatively inexpensive starting materials without using expensive catalysts. Various electro-optical measurements (UV-vis, CV, hole mobility, DSC, TGA, ionization potential) have been carried out to characterize the new hole transporting materials. Electronic supplementary information (ESI) available: Synthesis procedures, device construction and characterisation details. See DOI: 10.1039/c6nr01275b

  17. SNPase-ARMS qPCR: Ultrasensitive Mutation-Based Detection of Cell-Free Tumor DNA in Melanoma Patients

    Science.gov (United States)

    Stadler, Julia; Eder, Johanna; Pratscher, Barbara; Brandt, Sabine; Schneller, Doris; Müllegger, Robert; Vogl, Claus; Trautinger, Franz; Brem, Gottfried; Burgstaller, Joerg P.

    2015-01-01

    Cell-free circulating tumor DNA in the plasma of cancer patients has become a common point of interest as indicator of therapy options and treatment response in clinical cancer research. Especially patient- and tumor-specific single nucleotide variants that accurately distinguish tumor DNA from wild type DNA are promising targets. The reliable detection and quantification of these single-base DNA variants is technically challenging. Currently, a variety of techniques is applied, with no apparent “gold standard”. Here we present a novel qPCR protocol that meets the conditions of extreme sensitivity and specificity that are required for detection and quantification of tumor DNA. By consecutive application of two polymerases, one of them designed for extreme base-specificity, the method reaches unprecedented sensitivity and specificity. Three qPCR assays were tested with spike-in experiments, specific for point mutations BRAF V600E, PTEN T167A and NRAS Q61L of melanoma cell lines. It was possible to detect down to one copy of tumor DNA per reaction (Poisson distribution), at a background of up to 200 000 wild type DNAs. To prove its clinical applicability, the method was successfully tested on a small cohort of BRAF V600E positive melanoma patients. PMID:26562020

  18. SNPase-ARMS qPCR: Ultrasensitive Mutation-Based Detection of Cell-Free Tumor DNA in Melanoma Patients.

    Directory of Open Access Journals (Sweden)

    Julia Stadler

    Full Text Available Cell-free circulating tumor DNA in the plasma of cancer patients has become a common point of interest as indicator of therapy options and treatment response in clinical cancer research. Especially patient- and tumor-specific single nucleotide variants that accurately distinguish tumor DNA from wild type DNA are promising targets. The reliable detection and quantification of these single-base DNA variants is technically challenging. Currently, a variety of techniques is applied, with no apparent "gold standard". Here we present a novel qPCR protocol that meets the conditions of extreme sensitivity and specificity that are required for detection and quantification of tumor DNA. By consecutive application of two polymerases, one of them designed for extreme base-specificity, the method reaches unprecedented sensitivity and specificity. Three qPCR assays were tested with spike-in experiments, specific for point mutations BRAF V600E, PTEN T167A and NRAS Q61L of melanoma cell lines. It was possible to detect down to one copy of tumor DNA per reaction (Poisson distribution, at a background of up to 200 000 wild type DNAs. To prove its clinical applicability, the method was successfully tested on a small cohort of BRAF V600E positive melanoma patients.

  19. Modélisation et Caractérisation d'une Plate-Forme SOC Hétérogène : Application à la Radio Logicielle.

    OpenAIRE

    Rouxel, Samuel

    2006-01-01

    The work of this PhD has been carried out within the framework of the A3S project and relies on component aspects integrated within a SoC platform design methodology, which is based on the UML language. This methodology proposes a high-level design framework based on the A3S UML profile developed to provide real-time embedded system semantic especially in SDR domain. An MDA approach has been considered to deal with different abstraction levels when specifying systems.First part of the work fo...

  20. Comparison of the clinical accuracy of cervical (C2-C7) pedicle screw insertion assisted by fluoroscopy, computed tomography-based navigation, and intraoperative three-dimensional C-arm navigation

    Institute of Scientific and Technical Information of China (English)

    LIU Ya-jun; TIAN Wei; LIU Bo; LI Qin; HU Lin; LI Zhi-yu; YUAN Qiang; L(U) Yan-wei; SUN Yu-zhen

    2010-01-01

    Background The complicated anatomy of the cervical spine and the variation among pedicles reduces the accuracy and increases the risk of neurovascular complications associated with screw implantation in this region. In this study, we compared the accuracy of cervical (C2-C7) pedicle screw fixation assisted by X-ray fluoroscopy, computed tomography (CT)-based navigation, or intraoperative three-dimensional (3D) C-arm navigation.Methods This prospective cohort study was performed in 82 consecutive patients who underwent cervical pedicle screw fixation. The accuracy of screw insertion was assessed by postoperative CT scan with 3D reconstruction. The accuracy of screw insertion was assessed as: excellent (screw completely within pedicle); acceptable (≤ 1 mm screw outside pedicle cortex); poor (>1 mm screw outside pedicle cortex).Results A total of 145 screws were inserted in 24 patients who underwent C-arm fluoroscopy. Of these, 96 screws (66.2%) were excellent, 37 (25.5%) were acceptable, and 12 (8.3%) were poor. One hundred and fifty-nine screws were inserted in 29 patients in the CT-based navigation group. Among these, 141 (88.7%) were excellent, 14 (8.8%) were acceptable, and 4 (2.5%) were poor. A total of 140 screws were inserted in 29 patients in the intraoperative 3D C-arm navigation group, of which 127 (90.7%) were excellent, and 13 (9.3%) were acceptable. No severe or permanent neurovascular complications associated with screw insertion were observed in any patient.Conclusione CT-based and intraoperative 3D C-arm navigation were similarly accurate, and were both significantly more accurate than C-arm fluoroscopy for guiding cervical pedicle screw fixation. They were able to accurately guide the angle and depth of screw placement using visual 3D images. These two techniques are therefore preferable for high-risk cervical pedicle screw fixation. The ease and convenience of intraoperative 3D C-arm navigation suggests that it may replace virtual

  1. Dual Arm Work Module Development and Appplications

    Energy Technology Data Exchange (ETDEWEB)

    Noakes, M.W.

    1999-04-25

    The dual arm work module (DAWM) was developed at Oak Ridge National Laboratory (ORNL) by the Robotics Technology Development Program (RTDP) as a development test bed to study issues related to dual arm manipulation, including platform cotilguration, controls, automation, operations, and tooling. The original platform was based on two Schilling Titan II manipulators mounted to a 5-degree-of- freedom (DOF) base fabricated by RedZone Robotics, Inc. The 5-DOF articulation provided a center torso rotation, linear actuation to change the separation between the arms, and arm base rotation joints to provide "elbows up," elbows down," or "elbows out" orientation. A series of tests were conducted on operations, tooling, and task space scene analysis (TSSA)-driven robotics for overhead transporter- mounted and crane hook-deployed scenarios. A concept was developed for DAWM deployment from a large remote work vehicle, but the project was redirected to support dismantlement of the Chicago Pile #5 (CP-5) reactor at Argonne National Laboratory in fiscal year (FY) 1997. Support of CP-5 required a change in focus of the dual arm technology from that of a development test bed to a system focussed for a specific end user. ORNL teamed with the Idaho National Environmental ,Engineering Laboratory, Sandia National Laboratory, and the Savannah River Technology Center to deliver a crane-deployed derivative of the DAWM, designated the dual arm work platform (DAWP). RTDP staff supported DAWP at CP-5 for one FY; Argonne staff continued operation through to dismantlement of the reactor internals. Lessons learned from this interaction were extensive. Beginning in FY 1999, dual arm development activities are again being pursued in the context of those lessons learned. This paper describes the progression of philosophy of the DAWM from initial test bed to lessons learned through interaction at CP-5 and to the present investigation of telerobotic assist of teleoperation and TSSA- driven robotics.

  2. 基于人体工程学的仿人机械臂构型%Configuration of Humanoid Robotic Arm Based on Human Engineering

    Institute of Scientific and Technical Information of China (English)

    赵京; 宋春雨; 杜滨

    2013-01-01

    针对仿人机械臂构型问题,提出一种新的筛选方法,并确定串联结构方式下最符合人臂特征的仿人机械臂构型.从人体解剖学的角度出发,分析人臂的运动机理,并结合人体测量学和机器人学相关原理构建6种不同的仿人机械臂构型.提出全局相对可操作度指标对不同构型进行灵活性分析,并采用可视化方法绘制出各构型的运动灵活性性能分布图.根据人臂的运动特性分析人臂的运动工作空间,将各构型仿人机械臂工作空间与其对比,从而筛选出串联方式下的最佳仿人机械臂构型.该结果为仿人机械臂的设计提供了理论依据,并为后续运动规划奠定了基础.%A new screening method is proposed in configuring humanoid robotic arm,and a series configuration which is most consistent with the human arm characteristics is constructed The morement mechamnsm of human arm from the point of view of human anatomy is analyzed,and 6 types of humanoid robotic arm combined with the mechanism of anthropometry and robotics are constructed.The global relative manipulability index is put forward,and the dexterity of different types of humanoid robotic arm with this index are analyzed.The visualization method is used to plot the image of dexterous performance distribution.The workspaces of human arm are analyzed,and different types of humanoid robotic arm's workspace with it are contrasted,thereby screening the best type of humanoid robotic arm.The results lay the foundation for humanoid robotic arm design and follow-up study of motion planning.

  3. SOCS3 tyrosine phosphorylation as a potential bio-marker for myeloproliferative neoplasms associated with mutant JAK2 kinases

    OpenAIRE

    Elliott, Joanne; Suessmuth, Yvonne; Scott, Linda M.; Nahlik, Krystyna; McMullin, Mary Frances; Constantinescu, Stefan,; Green, Anthony R.; Johnston, James A.

    2009-01-01

    JAK2 V617F, identified in the majority of patients with myeloproliferative neoplasms, tyrosine phosphorylates SOCS3 and escapes its inhibition. Here, we demonstrate that the JAK2 exon 12 mutants described in a subset of V617F-negative MPN cases, also stabilize tyrosine phosphorylated SOCS3. SOCS3 tyrosine phosphorylation was also observed in peripheral blood mononuclear cells and granulocytes isolated from patients with JAK2 H538QK539L or JAY2 F537-K539delinsL mutations. JAK kinase inhibitors...

  4. The development of Home Furnishing Security Monitoring System Based on ARM%基于ARM的家居安防监控系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    侯泽民; 巨筱

    2014-01-01

    This paper introduces a Home Furnishing security monitoring system based on ARM. The system is an embedded ap-plication system based on ARM under Linux environment. The system uses advanced computer, network and communication technology, integration of the user's individual needs, integrated intelligent control and management through network, implement the"people-oriented"new Home Furnishing life experience.%论文主要介绍了一种基于ARM的家居安防监控系统。该系统是Linux环境下基于ARM的嵌入式应用系统。系统利用了先进的计算机、网络通讯技术,融合了用户的个性需求,通过网络化综合智能控制和管理,实现了“以人为本”的全新家居生活体验。

  5. 基于MATLAB的移栽机械臂运动学分析与仿真%Kinematics Analysis and Simulation of Transplanting Robot Arm Based on MATLAB

    Institute of Scientific and Technical Information of China (English)

    胡飞; 尹文庆; 陈彩蓉

    2012-01-01

    为了实现对四自由度移栽机械臂的精确控制,采用D-H法建立机械臂的连杆坐标系和运动学方程,实现了机械臂运动学正解.根据移栽机械臂的特点及参数,用解析法求得移栽机械臂的运动学逆解.运用MATLAB中的Robotics Toolbox工具箱对移栽机械臂进行运动学仿真,验证了所求得的正解和逆解.%In order to control the four - dimension transplanting robot arm accurately, the kinematics equation and the joint coordinate system of robot arm were established by using Denavit - Hartenberg method, and the forward solution of the kinematic equation was solved. According to the characteristics and parameters of transplanting robot arm, the inverse solution of the kinematics equation was solved by using the analytic method. The forward and inverse kinematics solutions of transplanting robot arm were proved by the kinematics simulation with Robotics Toolbox of MATLAB, which provided a theoretical foundation for trajectory planning and precise controlling of transplanting robot arm.

  6. Design of fabric CAD based on ARM%基于ARM的织物CAD软件设计

    Institute of Scientific and Technical Information of China (English)

    刘家希; 王跃存; 马崇启

    2012-01-01

    以Samsung公司的S3C6410为主芯片,Linux为嵌入式系统,Qt/Embedded为用户图形界面构成硬件平台;以Window系统+VMware虚拟机形式提供开发环境,利用Qt软件开发基于ARM平台的织物CAD软件,实现织物组织设计、色纱排列、织物参数设计、系统通讯存储等功能.与传统基于PC平台的织物CAD相比,此系统操作简单,界面友好,具有很强的实用性.%The hardware platform is constituted by Samsung S3C6410 chip, Linux operating system and the interface that is made by Qt/Embedded. A developing environment is provided by the windows system and VMware virtual machine, and the software of textile CAD is developed by using the Qt to complete some functions such as the fabric weave design, yam arrangement, fabric parameter design, communication and storage and so on. Comparing to the traditional software of textile CAD based on PC, this system has the convenience, friendly interface and highly practical.

  7. Design of an Error-Based Adaptive Controller for a Flexible Robot Arm Using Dynamic Pole Motion Approach

    Directory of Open Access Journals (Sweden)

    Ki-Young Song

    2011-01-01

    Full Text Available Design of an adaptive controller for complex dynamic systems is a big challenge faced by the researchers. In this paper, we introduce a novel concept of dynamic pole motion (DPM for the design of an error-based adaptive controller (E-BAC. The purpose of this novel design approach is to make the system response reasonably fast with no overshoot, where the system may be time varying and nonlinear with only partially known dynamics. The E-BAC is implanted in a system as a nonlinear controller with two dominant dynamic parameters: the dynamic position feedback and the dynamic velocity feedback. For illustrating the strength of this new approach, in this paper we give an example of a flexible robot with nonlinear dynamics. In the design of this feedback adaptive controller, parameters of the controller are designed as a function of the system error. The position feedback Kp(e,t and the velocity feedback Kv(e,t are continuously varying and formulated as a function of the system error e(t. This approach for formulating the adaptive controller yields a very fast response with no overshoot.

  8. Arm To Arm Interface Using Embedded C

    Directory of Open Access Journals (Sweden)

    Mohanraj.C

    2013-02-01

    Full Text Available Embedded systems are the most emerging field in these recent years. In this paper a different number of ARM processors (LPC2148 and LPC2378 are interconnected using C for distributed services. N numbers of processors are connected as the network and each processing devices are interlinked with each other, so that the each data that is processed by the devices and it can be used by the other device to activate their entire process. All the processed data’s are communicated to other device through Xbee interface card. LPC2148 and LPC2378 ARM processors are used in this prototype and winXtalk is used as a software terminal window. In this paper, the ultimate benefits of multiple processor interactions related to the embedded applications and design issues of processor interconnection are discussed. The features of multiple processor interaction in inter process communication and executions of embedded multitasking are also discussed. In modern embedded computing platform, embedded processor used in various applications like home automation, industrial control, medical system, access control, etc. In this paper, using embedded processor interactions, the several data communication is established.

  9. Design of Multi - function NC Hardware System Based on ARM9%基于ARM9的多功能数控机床硬件设计

    Institute of Scientific and Technical Information of China (English)

    汪越; 张甲英

    2012-01-01

    It puts forward a multifunctional numerical control system on the basis of ARM9 core microprocessor and better price ratio. The hardware platform is modularity. It takes-Samsung S3C2440A microprocessor as its operation core and ATmega88 as the with main CPU in order to automatically operate the processing. The control center plays the part of inputting the digital control program, keyboard inputting, LCD displaying, the explanation of the programs, crude interpolations and so on. The auxiliary CPU realizes fine interpolation, the human interface and communication module, and an 8 - inched multicolor display screen realizes the human interface and communicate. This system is low in power consumption and cost, can realize many operations such as digital operation, combing shining metal and machine together, probing and so on. The structure of the system is also simple for the maintenance and upgrading.%面向再制造需求,提出了一种性价比较高的基于ARM9微处理器的多功能机床数控系统.硬件平台采用模块化设计,以三星S3C2440A微处理器为主控CPU,ATmega88为从CPU,实现零件加工的自动控制.主控CPU主要完成数控程序的输入、键盘输入、LCD显示、程序的解释、粗插补等主要功能;从CPU为辅助设备,主要完成精插补功能;系统外围扩展人机交互模块,通讯模块,显示部分可配8英寸彩色显示屏,完成人机交互功能和数据的通讯.该系统具有功耗低、成本低、可实现数控车、铣、车铣复合、钻等加工工艺的特点,并且结构简单,极大地方便了系统的维护和升级,在经济型数控机床领域具有广阔的应用前景.

  10. 基于ARM 的嵌入式煤矿视频监控系统设计%Design of ARM-based embedded video monitoring system in coal mine

    Institute of Scientific and Technical Information of China (English)

    刘风华; 杨丽君

    2014-01-01

    为满足中小型煤矿企业对安全生产的要求,开发了适合井下安装使用的实时视频监控系统。该系统以Linux和ARM11作为嵌入式系统的软硬件开发平台系统,完成了嵌入式Web服务器及网络监控平台的设计,并实现了监控系统对大数据流的有效处理,有效降低了视频监控成本,提高了监控运行效率。该系统是Web技术、通信技术和嵌入式技术的结合,具有部署方便、稳定性高、抗干扰强、价格低廉等特点,能较好地满足现代中小型煤矿企业安全生产的要求。%In order to satisfy the requirements of safety production in coal mines,a real-time video monitoring system suit-able for underground was developed. Linux and ARM11 are adopted in the system as the software and hardware development platforms of the embedded system. The design of the embedded Web server and network monitoring platform system were com-pleted. The effective treatment of large data stream was realized in the monitoring system. Therefore,the video monitoring cost was reduced and the monitoring operating efficiency was improved. Web technology,communication technology and embedded technology are combined in the system. The system has the characteristics of convenient deployment,high stability,strong anti-interference,low cost and so on,and can meet the requirements of modern small-and medium-sized coal mine enterprises.

  11. Children In Armed Conflicts

    OpenAIRE

    Ranjan, Tejaswini

    2013-01-01

    This is a descriptive study. A child soldier is a child under the age of 18 that is recruited into the armed forces and engages in political violence. Child Soldiers are recruited by a state or non-state armed group and used as fighters, cooks, suicide bombers, human shields, messengers, spies, or for sexual purposes. This work of research describes the plight of child soldiers taking in context the scenario of different nations. The International mechanisms to combat this problem have also b...

  12. PHENIX Muon Arms

    International Nuclear Information System (INIS)

    The PHENIX Muon Arms detect muons at rapidities of |y|=(1.2-2.4) with full azimuthal acceptance. Each muon arm must track and identify muons and provide good rejection of pions and kaons (∼10-3). In order to accomplish this we employ a radial field magnetic spectrometer with precision tracking (Muon Tracker) followed by a stack of absorber/low resolution tracking layers (Muon Identifier). The design, construction, testing and expected run parameters of both the muon tracker and the muon identifier are described

  13. PHENIX Muon Arms

    Energy Technology Data Exchange (ETDEWEB)

    Akikawa, H.; Al-Jamel, A.; Archuleta, J.B.; Archuleta, J.R.; Armendariz, R.; Armijo, V.; Awes, T.C.; Baldisseri, A.; Barker, A.B.; Barnes, P.D.; Bassalleck, B.; Batsouli, S.; Behrendt, J.; Bellaiche, F.G.; Bland, A.W.; Bobrek, M.; Boissevain, J.G.; Borel, H.; Brooks, M.L.; Brown, A.W.; Brown, D.S.; Bruner, N.; Cafferty, M.M.; Carey, T.A.; Chai, J.-S.; Chavez, L.L.; Chollet, S.; Choudhury, R.K.; Chung, M.S.; Cianciolo, V.; Clark, D.J.; Cobigo, Y.; Dabrowski, C.M.; Debraine, A.; DeMoss, J.; Dinesh, B.V.; Drachenberg, J.L.; Drapier, O.; Echave, M.A.; Efremenko, Y.V.; En' yo, H.; Fields, D.E.; Fleuret, F.; Fried, J.; Fujisawa, E.; Funahashi, H.; Gadrat, S.; Gastaldi, F.; Gee, T.F.; Glenn, A.; Gogiberidze, G.; Gonin, M.; Gosset, J.; Goto, Y.; Granier de Cassagnac, R.; Hance, R.H.; Hart, G.W.; Hayashi, N.; Held, S.; Hicks, J.S.; Hill, J.C.; Hoade, R.; Hong, B.; Hoover, A.; Horaguchi, T.; Hunter, C.T.; Hurst, D.E.; Ichihara, T.; Imai, K.; Isenhower, L.D.L. Davis; Isenhower, L.D.L. Donald; Ishihara, M.; Jang, W.Y.; Johnson, J.; Jouan, D.; Kamihara, N.; Kamyshkov, Y.; Kang, J.H.; Kapoor, S.S.; Kim, D.J.; Kim, D.-W.; Kim, G.-B.; Kinnison, W.W.; Klinksiek, S.; Kluberg, L.; Kobayashi, H.; Koehler, D.; Kotchenda, L.; Kuberg, C.H.; Kurita, K.; Kweon, M.J.; Kwon, Y.; Kyle, G.S.; LaBounty, J.J.; Lajoie, J.G.; Lee, D.M.; Lee, S.; Leitch, M.J.; Li, Z.; Liu, M.X.; Liu, X.; Liu, Y.; Lockner, E.; Lopez, J.D.; Mao, Y.; Martinez, X.B.; McCain, M.C.; McGaughey, P.L.; Mioduszewski, S.; Mischke, R.E.; Mohanty, A.K.; Montoya, B.C.; Moss, J.M.; Murata, J.; Murray, M.M.; Nagle, J.L.; Nakada, Y.; Newby, J.; Obenshain, F.; Palounek, A.P.T.; Papavassiliou, V.; Pate, S.F.; Plasil, F.; Pope, K.; Qualls, J.M.; Rao, G.; Read, K.F. E-mail: readkf@ornl.gov; Robinson, S.H.; Roche, G.; Romana, A.; Rosnet, P.; Roth, R.; Saito, N.; Sakuma, T.; Sandhoff, W.F.; Sanfratello, L.; Sato, H.D.; Savino, R.; Sekimoto, M.; Shaw, M.R.; Shibata, T.-A.; Sim, K.S.; Skank, H.D.; Smith, D.E.; Smith, G.D. [and others

    2003-03-01

    The PHENIX Muon Arms detect muons at rapidities of |y|=(1.2-2.4) with full azimuthal acceptance. Each muon arm must track and identify muons and provide good rejection of pions and kaons ({approx}10{sup -3}). In order to accomplish this we employ a radial field magnetic spectrometer with precision tracking (Muon Tracker) followed by a stack of absorber/low resolution tracking layers (Muon Identifier). The design, construction, testing and expected run parameters of both the muon tracker and the muon identifier are described.

  14. The Question and Prospect for the Development of SOC%开发SOC面临的问题及发展展望

    Institute of Scientific and Technical Information of China (English)

    于宗光

    2001-01-01

    The basic concept of SOC is reviewed first. The various questions for the research of SOC are analyzed. The developing strategy of SOC is presented.%在阐述SOC发展背景的基础上,分析了SOC发展面临的各种问题,并提出了我国SOC发展的策略。

  15. Determination of cerium ion by polymeric membrane and coated graphite electrode based on novel pendant armed macrocycle

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Ashok K., E-mail: akscyfcy@iitr.ernet.in [Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667 (India); Singh, Prerna [Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667 (India)

    2010-08-24

    Plasticized membranes using 2,3,4:12,13,14-dipyridine-1,3,5,8,11,13,15,18-octaazacycloicosa-2,12-diene (L{sub 1}) and 2,3,4:12,13,14-dipyridine-1,5,8,11,15,18-hexamethylacrylate- 1,3,5,8,11,13,15,18-octaazacycloicosa-2,12-diene (L{sub 2}) have been prepared and explored as Ce(III) selective sensors. Effect of various plasticizers viz. dibutylphthalate (DBP), tri-n-butylphthalate (TBP), o-nitrophenyloctylether (o-NPOE), dioctylphthalate (DOP), benzylacetate (BA) and anion excluders, sodium tetraphenylborate (NaTPB) and potassium tetrakis p-(chlorophenyl) borate was studied in detail and improved performance was observed. Optimum performance was observed for the membrane sensor having a composition of L{sub 2}:PVC:o-NPOE:KTpClPB in the ratio of 6:34:58:2 (w/w, mg). The performance of the membrane based on L{sub 2} was compared with polymeric membrane electrode (PME) as well as with coated graphite electrode (CGE). The electrodes exhibit Nernstian slope for Ce(III) ions with limits of detection of 8.3 x 10{sup -8} mol L{sup -1} for PME and 7.7 x 10{sup -9} mol L{sup -1} for CGE. The response time for PME and CGE was found to be 12 s and 10 s respectively. The potentiometric responses are independent of the pH of the test solution in the pH range 3.5-7.5 for PME and 2.5-8.5 for CGE. The CGE could be used for a period of 5 months. The practical utility of the CGE has been demonstrated by its usage as an indicator electrode in potentiometric titration of oxalate and fluoride ions with Ce(III) solution. The proposed electrode was also successfully applied to the determination of fluoride ions in mouthwash solution and oxalate ions in real samples.

  16. A method for measurement of static lever arm

    Science.gov (United States)

    Ma, Xianglu; Qin, Shiqiao; Wang, Xingshu; Wu, Wei; Hu, Feng; Zheng, JiaXing

    2016-01-01

    Lever arm effect has to be considered in transfer alignment technology. Between static lever arm and dynamic lever arm, the former has larger amplitude, and it is the major error source in transfer alignment. How to measure and solve it become an important problem. This paper takes vehicle as a rigid body. Assume that static lever arm does not change in a short time, based on two inertial measurement units(IMU), data are measured and constituted several matrixes properly. After that, by using least square method, static lever arm is solved finally. Simulation experiments are implemented, results show that static lever arm can be solved effectively. Further study shows that, the precision of the method can be improved by preprocessing low pass filter.

  17. Design of solar PV automatic tracking system based on ARM%基于ARM太阳能光伏板自动跟踪系统的设计

    Institute of Scientific and Technical Information of China (English)

    朱宇; 袁志远

    2013-01-01

    To ARM 11 processor as main control chip embedded photovoltaic automatic control program, from the sunflower solar photovoltaic panels,photo sensitive resistance, photodiode, motor, three-dimensional scaffolds and ARM11. The system through the comparison of photosensitive resistance, combined with the three eye insects recognition direction characteristic, by a ARM 11 system control of multiple motor drive, drive motor rotates automatically, so that a plurality of sunflower solar photovoltaic panels and solar light to maintain the best angle. In order to achieve more than one machine and the automatic tracking sun, the experimental results show that the system can effectively improve the utilization rate of solar energy but also save a lot of cosl.%以ARM 11处理器为主控芯片的嵌入式光伏自动控制方案,由葵花太阳能光伏板,光敏电阻,光电二极管,电机,立体支架和ARM11组成.该系统通过比较光敏电阻的大小,并结合三只眼昆虫识别方向的特点,由一个ARM11系统控制多个电机驱动器,驱动电机自动旋转,使多个葵花太阳能光伏板与太阳光保持最佳角度.从而实现一机多能和对太阳的自动跟踪,实验结果证明该系统不但能有效地提高太阳能的利用率同时还能节约大量的成本.

  18. 基于ARM9的整数小波阈值压缩算法及其EVC实现%Integer wavelet threshold compression algorithm based on ARM9 and its EVC realization

    Institute of Scientific and Technical Information of China (English)

    孙金凤; 周国烛; 马红麟; 王学伟

    2007-01-01

    采用传统的一代小波变换进行数据压缩,存在实时性差,内存需求量大等问题.本文从小波滤波器的多相位矩阵出发,利用Euclidean分解方法,实现了小波变换由传统卷积模式到提升算法的转变,并进行了整数提升,克服了一代小波的不足.在此基础上提出了一种改进的整数小波阈值压缩算法,在ARM9上利用EVC予以实现.实验表明该算法在均方误差为0.3490%时,压缩比为11.875%,计算速度快,适合应用在实时性要求较强的场合.

  19. Research on CNC System Based on ARM Embedded Technology%基于ARM嵌入式技术的数控机床控制系统的研究

    Institute of Scientific and Technical Information of China (English)

    蒋洪; 雷运理

    2012-01-01

    针对目前工业控制系统体积大、成本高等缺点,开发设计一款基于ARM处理器的低成本嵌入式数控机床控制系统。该系统以ARM9高性能嵌入式处理器为控制核心,嵌入武Linux系统作为软件开发平台,采用MiniGUI实现图形用户界面操作并对整机进行控制,并建立了数控系统的调试环境,对开发的系统软硬件进行联机调试、软件测试和实例加工。测试和实例加工结果表明,基于ARM和嵌入式Linux的数控机床控制系统技术方案是可行的,实现了预期的功能。%The big size and high cost of industrial control system,low cost embedded CNC system is developed based on ARM processor.The Control core for the system is based on ARM9,a high performance embedded processor.With embedded Linux system as a software development platform,MiniGUI is used to realize the graphical user interface operation and control of the whole machine.The debugging environment for the numerical control system is developed to carry out on-line debugging of the system hardware and software,software testing and machining,which shows that technical scheme of ARM and embedded Linux-based CNC system is workable,and achieves expected functions and performances.

  20. Design of Image Monitoring System Based on ARM%基于ARM的图像监控系统的开发

    Institute of Scientific and Technical Information of China (English)

    王秀芳; 张昆; 桑圣洁

    2011-01-01

    设计了一种基于ARM和嵌入武Linux操作系统的图像监控系统.以S3C44BOX为核心,通过USB摄像头进行图像的采集,利用JPEG算法将摄像头采集的数据进行压缩编码,采用GPRS无线传输模块将压缩后的信息传输给远程的PC机,通过可视化软件IAbview编写能恢复采集到的图像信息,将图像进行实时的显示和控制的上位机软件.本系统对于数据的采集不局限于固定的地点,并且利用无线传输成功地实现了远程的监控,具有很好的实用价值.%One kind of image monitoring system was designed, which was based on ARM and embedded linux operating system. This system selected the chip S3C44B0X of samsung as core, and implemented image collection by USB camera zooms. After that, condensed the data by JPEG algorithm and transmited this information to remote PC by GPRS modules. The last process was that compiled the software on remote PC machine by Labview,this software can restore picture information and put the pictures for real-time display. This system is not limited to one fixed location for data acquisition, and using the wireless transmission make the remote monitoring come true. It has very good practical value.