WorldWideScience

Sample records for rapidmind multi-core development

  1. On developing B-spline registration algorithms for multi-core processors.

    Science.gov (United States)

    Shackleford, J A; Kandasamy, N; Sharp, G C

    2010-11-07

    Spline-based deformable registration methods are quite popular within the medical-imaging community due to their flexibility and robustness. However, they require a large amount of computing time to obtain adequate results. This paper makes two contributions towards accelerating B-spline-based registration. First, we propose a grid-alignment scheme and associated data structures that greatly reduce the complexity of the registration algorithm. Based on this grid-alignment scheme, we then develop highly data parallel designs for B-spline registration within the stream-processing model, suitable for implementation on multi-core processors such as graphics processing units (GPUs). Particular attention is focused on an optimal method for performing analytic gradient computations in a data parallel fashion. CPU and GPU versions are validated for execution time and registration quality. Performance results on large images show that our GPU algorithm achieves a speedup of 15 times over the single-threaded CPU implementation whereas our multi-core CPU algorithm achieves a speedup of 8 times over the single-threaded implementation. The CPU and GPU versions achieve near-identical registration quality in terms of RMS differences between the generated vector fields.

  2. Multi-core Microprocessors

    Indian Academy of Sciences (India)

    programming and computer fundamentals. His current research interests are parallel computing and history of computing. Multi-core microprocessor is an interconnected set of inde- pendent processors called cores integrated on a single sili- con chip. These processing cores communicate and cooperate with one another ...

  3. Design and development of a run-time monitor for multi-core architectures in cloud computing.

    Science.gov (United States)

    Kang, Mikyung; Kang, Dong-In; Crago, Stephen P; Park, Gyung-Leen; Lee, Junghoon

    2011-01-01

    Cloud computing is a new information technology trend that moves computing and data away from desktops and portable PCs into large data centers. The basic principle of cloud computing is to deliver applications as services over the Internet as well as infrastructure. A cloud is a type of parallel and distributed system consisting of a collection of inter-connected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources. The large-scale distributed applications on a cloud require adaptive service-based software, which has the capability of monitoring system status changes, analyzing the monitored information, and adapting its service configuration while considering tradeoffs among multiple QoS features simultaneously. In this paper, we design and develop a Run-Time Monitor (RTM) which is a system software to monitor the application behavior at run-time, analyze the collected information, and optimize cloud computing resources for multi-core architectures. RTM monitors application software through library instrumentation as well as underlying hardware through a performance counter optimizing its computing configuration based on the analyzed data.

  4. Design and Development of a Run-Time Monitor for Multi-Core Architectures in Cloud Computing

    Directory of Open Access Journals (Sweden)

    Junghoon Lee

    2011-03-01

    Full Text Available Cloud computing is a new information technology trend that moves computing and data away from desktops and portable PCs into large data centers. The basic principle of cloud computing is to deliver applications as services over the Internet as well as infrastructure. A cloud is a type of parallel and distributed system consisting of a collection of inter-connected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources. The large-scale distributed applications on a cloud require adaptive service-based software, which has the capability of monitoring system status changes, analyzing the monitored information, and adapting its service configuration while considering tradeoffs among multiple QoS features simultaneously. In this paper, we design and develop a Run-Time Monitor (RTM which is a system software to monitor the application behavior at run-time, analyze the collected information, and optimize cloud computing resources for multi-core architectures. RTM monitors application software through library instrumentation as well as underlying hardware through a performance counter optimizing its computing configuration based on the analyzed data.

  5. Using Multi-Core Systems for Rover Autonomy

    Science.gov (United States)

    Clement, Brad; Estlin, Tara; Bornstein, Benjamin; Springer, Paul; Anderson, Robert C.

    2010-01-01

    Task Objectives are: (1) Develop and demonstrate key capabilities for rover long-range science operations using multi-core computing, (a) Adapt three rover technologies to execute on SOA multi-core processor (b) Illustrate performance improvements achieved (c) Demonstrate adapted capabilities with rover hardware, (2) Targeting three high-level autonomy technologies (a) Two for onboard data analysis (b) One for onboard command sequencing/planning, (3) Technologies identified as enabling for future missions, (4)Benefits will be measured along several metrics: (a) Execution time / Power requirements (b) Number of data products processed per unit time (c) Solution quality

  6. Multi-core fiber undersea transmission systems

    DEFF Research Database (Denmark)

    Nooruzzaman, Md; Morioka, Toshio

    2017-01-01

    Various potential architectures of branching units for multi-core fiber undersea transmission systems are presented. It is also investigated how different architectures of branching unit influence the number of fibers and those of inline components....

  7. Neural simulations on multi-core architectures

    Directory of Open Access Journals (Sweden)

    Hubert Eichner

    2009-07-01

    Full Text Available Neuroscience is witnessing increasing knowledge about the anatomy and electrophysiological properties of neurons and their connectivity, leading to an ever increasing computational complexity of neural simulations. At the same time, a rather radical change in personal computer technology emerges with the establishment of multi-cores: high-density, explicitly parallel processor architectures for both high performance as well as standard desktop computers. This work introduces strategies for the parallelization of biophysically realistic neural simulations based on the compartmental modeling technique and results of such an implementation, with a strong focus on multi-core architectures and automation, i. e. user-transparent load balancing.

  8. Network coding on heterogeneous multi-core processors for wireless sensor networks.

    Science.gov (United States)

    Kim, Deokho; Park, Karam; Ro, Won W

    2011-01-01

    While network coding is well known for its efficiency and usefulness in wireless sensor networks, the excessive costs associated with decoding computation and complexity still hinder its adoption into practical use. On the other hand, high-performance microprocessors with heterogeneous multi-cores would be used as processing nodes of the wireless sensor networks in the near future. To this end, this paper introduces an efficient network coding algorithm developed for the heterogenous multi-core processors. The proposed idea is fully tested on one of the currently available heterogeneous multi-core processors referred to as the Cell Broadband Engine.

  9. Network Coding on Heterogeneous Multi-Core Processors for Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Won W. Ro

    2011-08-01

    Full Text Available While network coding is well known for its efficiency and usefulness in wireless sensor networks, the excessive costs associated with decoding computation and complexity still hinder its adoption into practical use. On the other hand, high-performance microprocessors with heterogeneous multi-cores would be used as processing nodes of the wireless sensor networks in the near future. To this end, this paper introduces an efficient network coding algorithm developed for the heterogenous multi-core processors. The proposed idea is fully tested on one of the currently available heterogeneous multi-core processors referred to as the Cell Broadband Engine.

  10. A multi-core CPU pipeline architecture for virtual environments.

    Science.gov (United States)

    Acosta, Eric; Liu, Alan; Sieck, Jennifer; Muniz, Gilbert; Bowyer, Mark; Armonda, Rocco

    2009-01-01

    Physically-based virtual environments (VEs) provide realistic interactions and behaviors for computer-based medical simulations. Limited CPU resources have traditionally forced VEs to be simplified for real-time performance. Multi-core processors greatly increase the computational capacity of computers and are quickly becoming standard. However, developing non-application specific methods to fully utilize all available CPU cores for processing VEs is difficult. The paper describes a pipeline VE architecture designed for multi-core CPU systems. The architecture enables development of VEs that leverage the computational resources of all CPU cores for VE simulation. A VE's workload is dynamically distributed across the available CPU cores. A VE can be developed once and scale efficiently with the number of cores. The described pipeline architecture makes it possible to develop complex physically-based VEs for medical simulations. Initial results for a craniotomy simulator being developed have shown super-linear and near-linear speedups when tested with up to four cores.

  11. Multi-core operations setup in Modern PCs under Linux

    OpenAIRE

    相山, 長和; Aiyama, Toshikazu

    2012-01-01

    Most of the modern personal computers has a central processing unit which is multi-cores, and its graphic processing unit is also multi-cores. We will present here a detailed installation process ofenvironment which enables us to explit multi-core for each architecture. Our special attentions are 64-bit, and double precisions in Linux. The main purpose of this paper is to show a framework for multi-threaded, and multi-cores operations in both central processing unit, and graphical processing ...

  12. On the effective parallel programming of multi-core processors

    NARCIS (Netherlands)

    Varbanescu, A.L.

    2010-01-01

    Multi-core processors are considered now the only feasible alternative to the large single-core processors which have become limited by technological aspects such as power consumption and heat dissipation. However, due to their inherent parallel structure and their diversity, multi-cores are

  13. Multi-Core Processor Memory Contention Benchmark Analysis Case Study

    Science.gov (United States)

    Simon, Tyler; McGalliard, James

    2009-01-01

    Multi-core processors dominate current mainframe, server, and high performance computing (HPC) systems. This paper provides synthetic kernel and natural benchmark results from an HPC system at the NASA Goddard Space Flight Center that illustrate the performance impacts of multi-core (dual- and quad-core) vs. single core processor systems. Analysis of processor design, application source code, and synthetic and natural test results all indicate that multi-core processors can suffer from significant memory subsystem contention compared to similar single-core processors.

  14. Nonlinear Light Dynamics in Multi-Core Structures

    Science.gov (United States)

    2017-02-27

    AFRL-AFOSR-UK-TR-2017-0013 Nonlinear light dynamics in multi-core structures Sergei Turitsyn ASTON UNIVERSITY Final Report 02/27/2017 DISTRIBUTION A...From - To) 30 Sep 2014 to 29 Sep 2016 4. TITLE AND SUBTITLE Nonlinear light dynamics in multi-core structures 5a.  CONTRACT NUMBER 5b.  GRANT NUMBER...number: FA9550-14-1-0305 Nonlinear light dynamics in multi-core structures Summary. This report presents the results of the research activities

  15. Summary of multi-core hardware and programming model investigations

    Energy Technology Data Exchange (ETDEWEB)

    Kelly, Suzanne Marie; Pedretti, Kevin Thomas Tauke; Levenhagen, Michael J.

    2008-05-01

    This report summarizes our investigations into multi-core processors and programming models for parallel scientific applications. The motivation for this study was to better understand the landscape of multi-core hardware, future trends, and the implications on system software for capability supercomputers. The results of this study are being used as input into the design of a new open-source light-weight kernel operating system being targeted at future capability supercomputers made up of multi-core processors. A goal of this effort is to create an agile system that is able to adapt to and efficiently support whatever multi-core hardware and programming models gain acceptance by the community.

  16. Efficient provisioning for multi-core applications with LSF

    Science.gov (United States)

    Dal Pra, Stefano

    2015-12-01

    Tier-1 sites providing computing power for HEP experiments are usually tightly designed for high throughput performances. This is pursued by reducing the variety of supported use cases and tuning for performances those ones, the most important of which have been that of singlecore jobs. Moreover, the usual workload is saturation: each available core in the farm is in use and there are queued jobs waiting for their turn to run. Enabling multi-core jobs thus requires dedicating a number of hosts where to run, and waiting for them to free the needed number of cores. This drain-time introduces a loss of computing power driven by the number of unusable empty cores. As an increasing demand for multi-core capable resources have emerged, a Task Force have been constituted in WLCG, with the goal to define a simple and efficient multi-core resource provisioning model. This paper details the work done at the INFN Tier-1 to enable multi-core support for the LSF batch system, with the intent of reducing to the minimum the average number of unused cores. The adopted strategy has been that of dedicating to multi-core a dynamic set of nodes, whose dimension is mainly driven by the number of pending multi-core requests and fair-share priority of the submitting user. The node status transition, from single to multi core et vice versa, is driven by a finite state machine which is implemented in a custom multi-core director script, running in the cluster. After describing and motivating both the implementation and the details specific to the LSF batch system, results about performance are reported. Factors having positive and negative impact on the overall efficiency are discussed and solutions to reduce at most the negative ones are proposed.

  17. Study on coherent coupling of multi-core PCFs

    Directory of Open Access Journals (Sweden)

    Yue-E. Chen

    2017-04-01

    Full Text Available In this work, we used R-Soft software to simulate the coupling between multi-core photonic crystal fibers (PCFs with different core diameters and distances. The simulation results show that the core distance within two wavelengths, different core diameters between the mode fields can be effectively coupled. The results are consistent with the evanescent wave propagation length of calculation. According to the designed structure based on the high temperature melting method, the multi-core PCF can be obtained by using two times technique of the optical fiber drawing tower. The core production of (2-, 7-, 19-core PCF of coherent synthesis experiment, observed apparent interference fringes in the experiment, which shows that the mode fields of the multiple cores meet the coherent conditions. This article provides a theoretical basis and guidance to effectively achieve a coherent coupling for the further design and preparation of multi-core fibers (more than 19 cores.

  18. Hardware Synchronization for Embedded Multi-Core Processors

    DEFF Research Database (Denmark)

    Stoif, Christian; Schoeberl, Martin; Liccardi, Benito

    2011-01-01

    Multi-core processors are about to conquer embedded systems — it is not the question of whether they are coming but how the architectures of the microcontrollers should look with respect to the strict requirements in the field. We present the step from one to multiple cores in this paper, establi...... single-ported memory if the multiple cores use inherent parallelism by locking shared memory more intelligently using an address-sensitive method......., establishing coherence and consistency for different types of shared memory by hardware means. Also support for point-to-point synchronization between the processor cores is realized implementing different hardware barriers. The practical examinations focus on the logical first step from single- to dual......-core systems, using an FPGA-development board with two hard PowerPC processor cores. Best- and worst-case results, together with intensive benchmarking of all synchronization primitives implemented, show the expected superiority of the hardware solutions. It is also shown that dual-ported memory outperforms...

  19. LDRD final report : a lightweight operating system for multi-core capability class supercomputers.

    Energy Technology Data Exchange (ETDEWEB)

    Kelly, Suzanne Marie; Hudson, Trammell B. (OS Research); Ferreira, Kurt Brian; Bridges, Patrick G. (University of New Mexico); Pedretti, Kevin Thomas Tauke; Levenhagen, Michael J.; Brightwell, Ronald Brian

    2010-09-01

    The two primary objectives of this LDRD project were to create a lightweight kernel (LWK) operating system(OS) designed to take maximum advantage of multi-core processors, and to leverage the virtualization capabilities in modern multi-core processors to create a more flexible and adaptable LWK environment. The most significant technical accomplishments of this project were the development of the Kitten lightweight kernel, the co-development of the SMARTMAP intra-node memory mapping technique, and the development and demonstration of a scalable virtualization environment for HPC. Each of these topics is presented in this report by the inclusion of a published or submitted research paper. The results of this project are being leveraged by several ongoing and new research projects.

  20. A study of scheduling problems with preemptions on multi-core computers with GPU accelerators

    OpenAIRE

    Błażewicz, Jacek; Kedad-Sidhoum, Safia; Monna, Florence; Mounié, Grégory; Trystram, Denis

    2015-01-01

    International audience; For many years, scheduling problems have been concerned either with parallel processor systems or with dedicated processors-job shop type systems. With a development of new computing architectures this partition is no longer so obvious. Multi-core (processor) computers equipped with GPU co-processors require new scheduling strategies. This paper is devoted to a characterization of this new type of scheduling problems. After a thorough introduction of the new model of a...

  1. CMS Readiness for Multi-Core Workload Scheduling

    Energy Technology Data Exchange (ETDEWEB)

    Perez-Calero Yzquierdo, A. [Madrid, CIEMAT; Balcas, J. [Caltech; Hernandez, J. [Madrid, CIEMAT; Aftab Khan, F. [NCP, Islamabad; Letts, J. [UC, San Diego; Mason, D. [Fermilab; Verguilov, V. [CLMI, Sofia

    2017-11-22

    In the present run of the LHC, CMS data reconstruction and simulation algorithms benefit greatly from being executed as multiple threads running on several processor cores. The complexity of the Run 2 events requires parallelization of the code to reduce the memory-per- core footprint constraining serial execution programs, thus optimizing the exploitation of present multi-core processor architectures. The allocation of computing resources for multi-core tasks, however, becomes a complex problem in itself. The CMS workload submission infrastructure employs multi-slot partitionable pilots, built on HTCondor and GlideinWMS native features, to enable scheduling of single and multi-core jobs simultaneously. This provides a solution for the scheduling problem in a uniform way across grid sites running a diversity of gateways to compute resources and batch system technologies. This paper presents this strategy and the tools on which it has been implemented. The experience of managing multi-core resources at the Tier-0 and Tier-1 sites during 2015, along with the deployment phase to Tier-2 sites during early 2016 is reported. The process of performance monitoring and optimization to achieve efficient and flexible use of the resources is also described.

  2. Scalable Parallelization of Skyline Computation for Multi-core Processors

    DEFF Research Database (Denmark)

    Chester, Sean; Sidlauskas, Darius; Assent, Ira

    2015-01-01

    The skyline is an important query operator for multi-criteria decision making. It reduces a dataset to only those points that offer optimal trade-offs of dimensions. In general, it is very expensive to compute. Recently, multi-core CPU algorithms have been proposed to accelerate the computation o...

  3. Synthetic Aperture Sequential Beamforming implemented on multi-core platforms

    DEFF Research Database (Denmark)

    Kjeldsen, Thomas; Lassen, Lee; Hemmsen, Martin Christian

    2014-01-01

    This paper compares several computational ap- proaches to Synthetic Aperture Sequential Beamforming (SASB) targeting consumer level parallel processors such as multi-core CPUs and GPUs. The proposed implementations demonstrate that ultrasound imaging using SASB can be executed in real- time with ...

  4. CMS readiness for multi-core workload scheduling

    Science.gov (United States)

    Perez-Calero Yzquierdo, A.; Balcas, J.; Hernandez, J.; Aftab Khan, F.; Letts, J.; Mason, D.; Verguilov, V.

    2017-10-01

    In the present run of the LHC, CMS data reconstruction and simulation algorithms benefit greatly from being executed as multiple threads running on several processor cores. The complexity of the Run 2 events requires parallelization of the code to reduce the memory-per- core footprint constraining serial execution programs, thus optimizing the exploitation of present multi-core processor architectures. The allocation of computing resources for multi-core tasks, however, becomes a complex problem in itself. The CMS workload submission infrastructure employs multi-slot partitionable pilots, built on HTCondor and GlideinWMS native features, to enable scheduling of single and multi-core jobs simultaneously. This provides a solution for the scheduling problem in a uniform way across grid sites running a diversity of gateways to compute resources and batch system technologies. This paper presents this strategy and the tools on which it has been implemented. The experience of managing multi-core resources at the Tier-0 and Tier-1 sites during 2015, along with the deployment phase to Tier-2 sites during early 2016 is reported. The process of performance monitoring and optimization to achieve efficient and flexible use of the resources is also described.

  5. Multi-Core BDD Operations for Symbolic Reachability

    NARCIS (Netherlands)

    van Dijk, Tom; Laarman, Alfons; van de Pol, Jan Cornelis; Heljanko, K.; Knottenbelt, W.J.

    2012-01-01

    This paper presents scalable parallel BDD operations for modern multi-core hardware. We aim at increasing the performance of reachability analysis in the context of model checking. Existing approaches focus on performing multiple independent BDD operations rather than parallelizing the BDD

  6. Boosting Multi-Core Reachability Performance with Shared Hash Tables

    NARCIS (Netherlands)

    Sharygina, N.; Laarman, Alfons; Bloem, R.; van de Pol, Jan Cornelis; Weber, M.

    2010-01-01

    This paper focuses on data structures for multi-core reachability, which is a key component in model checking algorithms and other verification methods. A cornerstone of an efficient solution is the storage of visited states. In related work, static partitioning of the state space was combined with

  7. Scalable Sensor Data Processor: A Multi-Core Payload Data Processor ASIC

    Science.gov (United States)

    Berrojo, L.; Moreno, R.; Regada, R.; Garcia, E.; Trautner, R.; Rauwerda, G.; Sunesen, K.; He, Y.; Redant, S.; Thys, G.; Andersson, J.; Habinc, S.

    2015-09-01

    The Scalable Sensor Data Processor (SSDP) project, under ESA contract and with TAS-E as prime contractor, targets the development of a multi-core ASIC for payload data processing to be used, among other terrestrial and space application areas, in future scientific and exploration missions with harsh radiation environments. The SSDP is a mixed-signal heterogeneous multi-core System-on-Chip (SoC). It combines GPP and NoC-based DSP subsystems with on-chip ADCs and several standard space I/Fs to make a flexible, configurable and scalable device. The NoC comprises two state-of-the-art fixed point Xentium® DSP processors, providing the device with high data processing capabilities.

  8. Parallel implementation of RX anomaly detection on multi-core processors: impact of data partitioning strategies

    Science.gov (United States)

    Molero, Jose M.; Garzón, Ester M.; García, Inmaculada; Plaza, Antonio

    2011-11-01

    Anomaly detection is an important task for remotely sensed hyperspectral data exploitation. One of the most widely used and successful algorithms for anomaly detection in hyperspectral images is the Reed-Xiaoli (RX) algorithm. Despite its wide acceptance and high computational complexity when applied to real hyperspectral scenes, few documented parallel implementations of this algorithm exist, in particular for multi-core processors. The advantage of multi-core platforms over other specialized parallel architectures is that they are a low-power, inexpensive, widely available and well-known technology. A critical issue in the parallel implementation of RX is the sample covariance matrix calculation, which can be approached in global or local fashion. This aspect is crucial for the RX implementation since the consideration of a local or global strategy for the computation of the sample covariance matrix is expected to affect both the scalability of the parallel solution and the anomaly detection results. In this paper, we develop new parallel implementations of the RX in multi-core processors and specifically investigate the impact of different data partitioning strategies when parallelizing its computations. For this purpose, we consider both global and local data partitioning strategies in the spatial domain of the scene, and further analyze their scalability in different multi-core platforms. The numerical effectiveness of the considered solutions is evaluated using receiver operating characteristics (ROC) curves, analyzing their capacity to detect thermal hot spots (anomalies) in hyperspectral data collected by the NASA's Airborne Visible Infra- Red Imaging Spectrometer system over the World Trade Center in New York, five days after the terrorist attacks of September 11th, 2001.

  9. Multi-core processing and scheduling performance in CMS

    CERN Multimedia

    CERN. Geneva

    2012-01-01

    Commodity hardware is going many-core. We might soon not be able to satisfy the job memory needs per core in the current single-core processing model in High Energy Physics. In addition, an ever increasing number of independent and incoherent jobs running on the same physical hardware not sharing resources might significantly affect processing performance. It will be essential to effectively utilize the multi-core architecture. CMS has incorporated support for multi-core processing in the event processing framework and the workload management system. Multi-core processing jobs share common data in memory, such us the code libraries, detector geometry and conditions data, resulting in a much lower memory usage than standard single-core independent jobs. Exploiting this new processing model requires a new model in computing resource allocation, departing from the standard single-core allocation for a job. The experiment job management system needs to have control over a larger quantum of resource since multi-...

  10. Tinuso: A processor architecture for a multi-core hardware simulation platform

    DEFF Research Database (Denmark)

    Schleuniger, Pascal; Karlsson, Sven

    2010-01-01

    accurate hardware simulation platform. We have developed the Tinuso processor architecture for this platform. Tinuso is a processor architecture optimized for FPGA implementation. The instruction set makes use of predicated instructions and supports C/C++ and assembly language programming. It is designed...... to be easy extendable to maintain the exibility required for the research on multi-core systems. Tinuso contains a co-processor interface to connect to a network interface. This interface allow for communication over an on-chip network. A clock frequency estimation study on a deeply pipelined Tinuso...

  11. Neural networks within multi-core optic fibers.

    Science.gov (United States)

    Cohen, Eyal; Malka, Dror; Shemer, Amir; Shahmoon, Asaf; Zalevsky, Zeev; London, Michael

    2016-07-07

    Hardware implementation of artificial neural networks facilitates real-time parallel processing of massive data sets. Optical neural networks offer low-volume 3D connectivity together with large bandwidth and minimal heat production in contrast to electronic implementation. Here, we present a conceptual design for in-fiber optical neural networks. Neurons and synapses are realized as individual silica cores in a multi-core fiber. Optical signals are transferred transversely between cores by means of optical coupling. Pump driven amplification in erbium-doped cores mimics synaptic interactions. We simulated three-layered feed-forward neural networks and explored their capabilities. Simulations suggest that networks can differentiate between given inputs depending on specific configurations of amplification; this implies classification and learning capabilities. Finally, we tested experimentally our basic neuronal elements using fibers, couplers, and amplifiers, and demonstrated that this configuration implements a neuron-like function. Therefore, devices similar to our proposed multi-core fiber could potentially serve as building blocks for future large-scale small-volume optical artificial neural networks.

  12. Neural networks within multi-core optic fibers

    Science.gov (United States)

    Cohen, Eyal; Malka, Dror; Shemer, Amir; Shahmoon, Asaf; Zalevsky, Zeev; London, Michael

    2016-07-01

    Hardware implementation of artificial neural networks facilitates real-time parallel processing of massive data sets. Optical neural networks offer low-volume 3D connectivity together with large bandwidth and minimal heat production in contrast to electronic implementation. Here, we present a conceptual design for in-fiber optical neural networks. Neurons and synapses are realized as individual silica cores in a multi-core fiber. Optical signals are transferred transversely between cores by means of optical coupling. Pump driven amplification in erbium-doped cores mimics synaptic interactions. We simulated three-layered feed-forward neural networks and explored their capabilities. Simulations suggest that networks can differentiate between given inputs depending on specific configurations of amplification; this implies classification and learning capabilities. Finally, we tested experimentally our basic neuronal elements using fibers, couplers, and amplifiers, and demonstrated that this configuration implements a neuron-like function. Therefore, devices similar to our proposed multi-core fiber could potentially serve as building blocks for future large-scale small-volume optical artificial neural networks.

  13. Energy-aware Thread and Data Management in Heterogeneous Multi-core, Multi-memory Systems

    Energy Technology Data Exchange (ETDEWEB)

    Su, Chun-Yi [Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

    2014-12-16

    By 2004, microprocessor design focused on multicore scaling—increasing the number of cores per die in each generation—as the primary strategy for improving performance. These multicore processors typically equip multiple memory subsystems to improve data throughput. In addition, these systems employ heterogeneous processors such as GPUs and heterogeneous memories like non-volatile memory to improve performance, capacity, and energy efficiency. With the increasing volume of hardware resources and system complexity caused by heterogeneity, future systems will require intelligent ways to manage hardware resources. Early research to improve performance and energy efficiency on heterogeneous, multi-core, multi-memory systems focused on tuning a single primitive or at best a few primitives in the systems. The key limitation of past efforts is their lack of a holistic approach to resource management that balances the tradeoff between performance and energy consumption. In addition, the shift from simple, homogeneous systems to these heterogeneous, multicore, multi-memory systems requires in-depth understanding of efficient resource management for scalable execution, including new models that capture the interchange between performance and energy, smarter resource management strategies, and novel low-level performance/energy tuning primitives and runtime systems. Tuning an application to control available resources efficiently has become a daunting challenge; managing resources in automation is still a dark art since the tradeoffs among programming, energy, and performance remain insufficiently understood. In this dissertation, I have developed theories, models, and resource management techniques to enable energy-efficient execution of parallel applications through thread and data management in these heterogeneous multi-core, multi-memory systems. I study the effect of dynamic concurrent throttling on the performance and energy of multi-core, non-uniform memory access

  14. An events based algorithm for distributing concurrent tasks on multi-core architectures

    Science.gov (United States)

    Holmes, David W.; Williams, John R.; Tilke, Peter

    2010-02-01

    In this paper, a programming model is presented which enables scalable parallel performance on multi-core shared memory architectures. The model has been developed for application to a wide range of numerical simulation problems. Such problems involve time stepping or iteration algorithms where synchronization of multiple threads of execution is required. It is shown that traditional approaches to parallelism including message passing and scatter-gather can be improved upon in terms of speed-up and memory management. Using spatial decomposition to create orthogonal computational tasks, a new task management algorithm called H-Dispatch is developed. This algorithm makes efficient use of memory resources by limiting the need for garbage collection and takes optimal advantage of multiple cores by employing a "hungry" pull strategy. The technique is demonstrated on a simple finite difference solver and results are compared to traditional MPI and scatter-gather approaches. The H-Dispatch approach achieves near linear speed-up with results for efficiency of 85% on a 24-core machine. It is noted that the H-Dispatch algorithm is quite general and can be applied to a wide class of computational tasks on heterogeneous architectures involving multi-core and GPGPU hardware.

  15. Scalable Multi-core Architectures Design Methodologies and Tools

    CERN Document Server

    Jantsch, Axel

    2012-01-01

    As Moore’s law continues to unfold, two important trends have recently emerged. First, the growth of chip capacity is translated into a corresponding increase of number of cores. Second, the parallalization of the computation and 3D integration technologies lead to distributed memory architectures. This book provides a current snapshot of industrial and academic research, conducted as part of the European FP7 MOSART project, addressing urgent challenges in many-core architectures and application mapping.  It addresses the architectural design of many core chips, memory and data management, power management, design and programming methodologies. It also describes how new techniques have been applied in various industrial case studies. Describes trends towards distributed memory architectures and distributed power management; Integrates Network on Chip with distributed, shared memory architectures; Demonstrates novel design methodologies and frameworks for multi-core design space exploration; Shows how midll...

  16. pyPaSWAS: Python-based multi-core CPU and GPU sequence alignment.

    Science.gov (United States)

    Warris, Sven; Timal, N Roshan N; Kempenaar, Marcel; Poortinga, Arne M; van de Geest, Henri; Varbanescu, Ana L; Nap, Jan-Peter

    2018-01-01

    Our previously published CUDA-only application PaSWAS for Smith-Waterman (SW) sequence alignment of any type of sequence on NVIDIA-based GPUs is platform-specific and therefore adopted less than could be. The OpenCL language is supported more widely and allows use on a variety of hardware platforms. Moreover, there is a need to promote the adoption of parallel computing in bioinformatics by making its use and extension more simple through more and better application of high-level languages commonly used in bioinformatics, such as Python. The novel application pyPaSWAS presents the parallel SW sequence alignment code fully packed in Python. It is a generic SW implementation running on several hardware platforms with multi-core systems and/or GPUs that provides accurate sequence alignments that also can be inspected for alignment details. Additionally, pyPaSWAS support the affine gap penalty. Python libraries are used for automated system configuration, I/O and logging. This way, the Python environment will stimulate further extension and use of pyPaSWAS. pyPaSWAS presents an easy Python-based environment for accurate and retrievable parallel SW sequence alignments on GPUs and multi-core systems. The strategy of integrating Python with high-performance parallel compute languages to create a developer- and user-friendly environment should be considered for other computationally intensive bioinformatics algorithms.

  17. Optimization of the coherence function estimation for multi-core central processing unit

    Science.gov (United States)

    Cheremnov, A. G.; Faerman, V. A.; Avramchuk, V. S.

    2017-02-01

    The paper considers use of parallel processing on multi-core central processing unit for optimization of the coherence function evaluation arising in digital signal processing. Coherence function along with other methods of spectral analysis is commonly used for vibration diagnosis of rotating machinery and its particular nodes. An algorithm is given for the function evaluation for signals represented with digital samples. The algorithm is analyzed for its software implementation and computational problems. Optimization measures are described, including algorithmic, architecture and compiler optimization, their results are assessed for multi-core processors from different manufacturers. Thus, speeding-up of the parallel execution with respect to sequential execution was studied and results are presented for Intel Core i7-4720HQ и AMD FX-9590 processors. The results show comparatively high efficiency of the optimization measures taken. In particular, acceleration indicators and average CPU utilization have been significantly improved, showing high degree of parallelism of the constructed calculating functions. The developed software underwent state registration and will be used as a part of a software and hardware solution for rotating machinery fault diagnosis and pipeline leak location with acoustic correlation method.

  18. HardwareSoftware Co-design for Heterogeneous Multi-core Platforms The hArtes Toolchain

    CERN Document Server

    2012-01-01

    This book describes the results and outcome of the FP6 project, known as hArtes, which focuses on the development of an integrated tool chain targeting a heterogeneous multi core platform comprising of a general purpose processor (ARM or powerPC), a DSP (the diopsis) and an FPGA. The tool chain takes existing source code and proposes transformations and mappings such that legacy code can easily be ported to a modern, multi-core platform. Benefits of the hArtes approach, described in this book, include: Uses a familiar programming paradigm: hArtes proposes a familiar programming paradigm which is compatible with the widely used programming practice, irrespective of the target platform. Enables users to view multiple cores as a single processor: the hArtes approach abstracts away the heterogeneity as well as the multi-core aspect of the underlying hardware so the developer can view the platform as consisting of a single, general purpose processor. Facilitates easy porting of existing applications: hArtes provid...

  19. Energy Efficient Multi-Core Processing

    Directory of Open Access Journals (Sweden)

    Charles Leech

    2014-06-01

    Full Text Available This paper evaluates the present state of the art of energy-efficient embedded processor design techniques and demonstrates, how small, variable-architecture embedded processors may exploit a run-time minimal architectural synthesis technique to achieve greater energy and area efficiency whilst maintaining performance. The picoMIPS architecture is presented, inspired by the MIPS, as an example of a minimal and energy efficient processor. The picoMIPS is a variablearchitecture RISC microprocessor with an application-specific minimised instruction set. Each implementation will contain only the necessary datapath elements in order to maximise area efficiency. Due to the relationship between logic gate count and power consumption, energy efficiency is also maximised in the processor therefore the system is designed to perform a specific task in the most efficient processor-based form. The principles of the picoMIPS processor are illustrated with an example of the discrete cosine transform (DCT and inverse DCT (IDCT algorithms implemented in a multi-core context to demonstrate the concept of minimal architecture synthesis and how it can be used to produce an application specific, energy efficient processor.

  20. Performance evaluation of throughput computing workloads using multi-core processors and graphics processors

    Science.gov (United States)

    Dave, Gaurav P.; Sureshkumar, N.; Blessy Trencia Lincy, S. S.

    2017-11-01

    Current trend in processor manufacturing focuses on multi-core architectures rather than increasing the clock speed for performance improvement. Graphic processors have become as commodity hardware for providing fast co-processing in computer systems. Developments in IoT, social networking web applications, big data created huge demand for data processing activities and such kind of throughput intensive applications inherently contains data level parallelism which is more suited for SIMD architecture based GPU. This paper reviews the architectural aspects of multi/many core processors and graphics processors. Different case studies are taken to compare performance of throughput computing applications using shared memory programming in OpenMP and CUDA API based programming.

  1. Ultrasound phase rotation beamforming on multi-core DSP.

    Science.gov (United States)

    Ma, Jieming; Karadayi, Kerem; Ali, Murtaza; Kim, Yongmin

    2014-01-01

    Phase rotation beamforming (PRBF) is a commonly-used digital receive beamforming technique. However, due to its high computational requirement, it has traditionally been supported by hardwired architectures, e.g., application-specific integrated circuits (ASICs) or more recently field-programmable gate arrays (FPGAs). In this study, we investigated the feasibility of supporting software-based PRBF on a multi-core DSP. To alleviate the high computing requirement, the analog front-end (AFE) chips integrating quadrature demodulation in addition to analog-to-digital conversion were defined and used. With these new AFE chips, only delay alignment and phase rotation need to be performed by DSP, substantially reducing the computational load. We implemented the delay alignment and phase rotation modules on a Texas Instruments C6678 DSP with 8 cores. We found it takes 200 μs to beamform 2048 samples from 64 channels using 2 cores. With 4 cores, 20 million samples can be beamformed in one second. Therefore, ADC frequencies up to 40 MHz with 2:1 decimation in AFE chips or up to 20 MHz with no decimation can be supported as long as the ADC-to-DSP I/O requirement can be met. The remaining 4 cores can work on back-end processing tasks and applications, e.g., color Doppler or ultrasound elastography. One DSP being able to handle both beamforming and back-end processing could lead to low-power and low-cost ultrasound machines, benefiting ultrasound imaging in general, particularly portable ultrasound machines. Copyright © 2013 Elsevier B.V. All rights reserved.

  2. Wavelength-dependent Crosstalk in Trench-Assisted Multi-Core Fibers

    DEFF Research Database (Denmark)

    Ye, Feihong; Tu, Jiajing; Saitoh, Kunimasa

    2014-01-01

    Analytical expressions for wavelength-dependent crosstalk in homogeneous trench-assisted multi-core fibers are derived. The calculated results from the expressions agree well with the numerical simulation results based on finite element method....

  3. Multi-core Fibers in Submarine Networks for High-Capacity Undersea Transmission Systems

    DEFF Research Database (Denmark)

    Nooruzzaman, Md; Morioka, Toshio

    2017-01-01

    Application of multi-core fibers in undersea networks for high-capacity submarine transmission systems is studied. It is demonstrated how different architectures of submerged branching unit affect network component counts in long-haul undersea transmission systems......Application of multi-core fibers in undersea networks for high-capacity submarine transmission systems is studied. It is demonstrated how different architectures of submerged branching unit affect network component counts in long-haul undersea transmission systems...

  4. Novel Crosstalk Measurement Method for Multi-Core Fiber Fan-In/Fan-Out Devices

    DEFF Research Database (Denmark)

    Ye, Feihong; Ono, Hirotaka; Abe, Yoshiteru

    2016-01-01

    We propose a new crosstalk measurement method for multi-core fiber fan-in/fan-out devices utilizing the Fresnel reflection. Compared with the traditional method using core-to-core coupling between a multi-core fiber and a single-mode fiber, the proposed method has the advantages of high reliability...... and much shorter measurement time. Statistical properties of the measured crosstalk by the new method are found to be very similar to the ones by the traditional coupling method....

  5. Multi-core-CPU and GPU-accelerated radiative transfer models based on the discrete ordinate method

    Science.gov (United States)

    Efremenko, Dmitry S.; Loyola, Diego G.; Doicu, Adrian; Spurr, Robert J. D.

    2014-12-01

    The operational processing of remote sensing data usually requires high-performance radiative transfer model (RTM) simulations. To date, multi-core CPUs and also Graphical Processing Units (GPUs) have been used for highly intensive parallel computations. In this paper, we have compared multi-core and GPU implementations of an RTM based on the discrete ordinate solution method. To implement GPUs, the original CPU code has been redesigned using the C-oriented Compute Unified Device Architecture (CUDA) developed by NVIDIA. GPU memory management is a crucial issue regarding the performance. To cope with limitations of GPU registers, we have adapted an RTM based on the matrix operator technique together with the interaction principle for multilayer atmospheric systems. The speed-up of such an implementation depends on the number of discrete ordinates used in the RTM. To reduce the CPU/GPU communication overhead, we have exploited the asynchronous data transfer between host and device. To obtain optimal performance, we have also used overlapping of CPU and GPU computations by distributing the workload between them. With GPUs, we have achieved a 20x-40x speed-up for the multi-stream RTM, and 50x speed-up for the two-stream RTM with respect to the original single-threaded CPU codes. Based on these performance tests, an optimal workload distribution scheme between GPU and CPU is proposed. Additionally, CPU/GPU benchmark tests regarding basic matrix operations are given. Finally, we discuss the performance obtained with the multi-core-CPU and GPU implementations of the RTM.

  6. Performance modeling and analysis of parallel Gaussian elimination on multi-core computers

    Directory of Open Access Journals (Sweden)

    Fadi N. Sibai

    2014-01-01

    Full Text Available Gaussian elimination is used in many applications and in particular in the solution of systems of linear equations. This paper presents mathematical performance models and analysis of four parallel Gaussian Elimination methods (precisely the Original method and the new Meet in the Middle –MiM– algorithms and their variants with SIMD vectorization on multi-core systems. Analytical performance models of the four methods are formulated and presented followed by evaluations of these models with modern multi-core systems’ operation latencies. Our results reveal that the four methods generally exhibit good performance scaling with increasing matrix size and number of cores. SIMD vectorization only makes a large difference in performance for low number of cores. For a large matrix size (n ⩾ 16 K, the performance difference between the MiM and Original methods falls from 16× with four cores to 4× with 16 K cores. The efficiencies of all four methods are low with 1 K cores or more stressing a major problem of multi-core systems where the network-on-chip and memory latencies are too high in relation to basic arithmetic operations. Thus Gaussian Elimination can greatly benefit from the resources of multi-core systems, but higher performance gains can be achieved if multi-core systems can be designed with lower memory operation, synchronization, and interconnect communication latencies, requirements of utmost importance and challenge in the exascale computing age.

  7. Dynamic power management techniques in multi-core architectures: A survey study

    Directory of Open Access Journals (Sweden)

    Khaled M. Attia

    2017-09-01

    Full Text Available Multi-core processors support all modern electronic devices nowadays. However, power management is one of the most critical issues in the design of today’s microprocessors. The goal of power management is to maximize performance within a given power budget. Power management techniques must balance between the demanding needs for higher performance/throughput and the impact of aggressive power consumption and negative thermal effects. Many techniques have been proposed in this area, and some of them have been implemented such as the well-known DVFS technique which is used in nearly all modern microprocessors. This paper explores the concepts of multi-core, trending research areas in the field of multi-core processors and then concentrates on power management issues in multi-core architectures. The main objective of this paper is to survey and discuss the current power management techniques. Moreover, it proposes a new technique for power management in multi-core processors based on that survey.

  8. Fuzzy logic based power-efficient real-time multi-core system

    CERN Document Server

    Ahmed, Jameel; Najam, Shaheryar; Najam, Zohaib

    2017-01-01

    This book focuses on identifying the performance challenges involved in computer architectures, optimal configuration settings and analysing their impact on the performance of multi-core architectures. Proposing a power and throughput-aware fuzzy-logic-based reconfiguration for Multi-Processor Systems on Chip (MPSoCs) in both simulation and real-time environments, it is divided into two major parts. The first part deals with the simulation-based power and throughput-aware fuzzy logic reconfiguration for multi-core architectures, presenting the results of a detailed analysis on the factors impacting the power consumption and performance of MPSoCs. In turn, the second part highlights the real-time implementation of fuzzy-logic-based power-efficient reconfigurable multi-core architectures for Intel and Leone3 processors. .

  9. Multi-Core Technology for and Fault Tolerant High-Performance Spacecraft Computer Systems

    Science.gov (United States)

    Behr, Peter M.; Haulsen, Ivo; Van Kampenhout, J. Reinier; Pletner, Samuel

    2012-08-01

    The current architectural trends in the field of multi-core processors can provide an enormous increase in processing power by exploiting the parallelism available in many applications. In particular because of their high energy efficiency, it is obvious that multi-core processor-based systems will also be used in future space missions. In this paper we present the system architecture of a powerful optical sensor system based on the eight core multi-core processor P4080 from Freescale. The fault tolerant structure and the highly effective FDIR concepts implemented on different hardware and software levels of the system are described in detail. The space application scenario and thus the main requirements for the sensor system have been defined by a complex tracking sensor application for autonomous landing or docking manoeuvres.

  10. Massively Multi-core Acceleration of a Document-Similarity Classifier to Detect Web Attacks

    Energy Technology Data Exchange (ETDEWEB)

    Ulmer, C; Gokhale, M; Top, P; Gallagher, B; Eliassi-Rad, T

    2010-01-14

    This paper describes our approach to adapting a text document similarity classifier based on the Term Frequency Inverse Document Frequency (TFIDF) metric to two massively multi-core hardware platforms. The TFIDF classifier is used to detect web attacks in HTTP data. In our parallel hardware approaches, we design streaming, real time classifiers by simplifying the sequential algorithm and manipulating the classifier's model to allow decision information to be represented compactly. Parallel implementations on the Tilera 64-core System on Chip and the Xilinx Virtex 5-LX FPGA are presented. For the Tilera, we employ a reduced state machine to recognize dictionary terms without requiring explicit tokenization, and achieve throughput of 37MB/s at slightly reduced accuracy. For the FPGA, we have developed a set of software tools to help automate the process of converting training data to synthesizable hardware and to provide a means of trading off between accuracy and resource utilization. The Xilinx Virtex 5-LX implementation requires 0.2% of the memory used by the original algorithm. At 166MB/s (80X the software) the hardware implementation is able to achieve Gigabit network throughput at the same accuracy as the original algorithm.

  11. A Fast CT Reconstruction Scheme for a General Multi-Core PC

    Directory of Open Access Journals (Sweden)

    Kai Zeng

    2007-01-01

    Full Text Available Expensive computational cost is a severe limitation in CT reconstruction for clinical applications that need real-time feedback. A primary example is bolus-chasing computed tomography (CT angiography (BCA that we have been developing for the past several years. To accelerate the reconstruction process using the filtered backprojection (FBP method, specialized hardware or graphics cards can be used. However, specialized hardware is expensive and not flexible. The graphics processing unit (GPU in a current graphic card can only reconstruct images in a reduced precision and is not easy to program. In this paper, an acceleration scheme is proposed based on a multi-core PC. In the proposed scheme, several techniques are integrated, including utilization of geometric symmetry, optimization of data structures, single-instruction multiple-data (SIMD processing, multithreaded computation, and an Intel C++ compilier. Our scheme maintains the original precision and involves no data exchange between the GPU and CPU. The merits of our scheme are demonstrated in numerical experiments against the traditional implementation. Our scheme achieves a speedup of about 40, which can be further improved by several folds using the latest quad-core processors.

  12. Capacity of Space-Division Multiplexing with Heterogeneous Multi-Core Fibers

    DEFF Research Database (Denmark)

    Ye, Feihong; Peucheret, Christophe; Morioka, Toshio

    2013-01-01

    The capacity of heterogeneous multi-core fibers is explored, taking into account intra-core nonlinearities and inter-core crosstalk. Over 10 Pb/s transmission capacity can be anticipated for a densely-packed 93-core fiber with a 220 μm cladding diameter.......The capacity of heterogeneous multi-core fibers is explored, taking into account intra-core nonlinearities and inter-core crosstalk. Over 10 Pb/s transmission capacity can be anticipated for a densely-packed 93-core fiber with a 220 μm cladding diameter....

  13. A data-parallelism approach for PSO-ANN based medical image reconstruction on a multi-core system

    Directory of Open Access Journals (Sweden)

    Subramanian Kartheeswaran

    Full Text Available This paper presents the sequential and parallel data decomposition strategies implemented on a Particle Swarm Optimization (PSO algorithm based Artificial Neural Network (PSO-ANN weights optimization for image reconstruction. The application system is developed for the reconstruction of two-dimensional spatial standard Computed Tomography (CT phantom images. It is running on a multi-core computer by varying the number of cores. The feed forward ANN initializes the weight between the ‘ideal’ images that are reconstructed using filtered back projection (FBP technique and the corresponding projection data of CT phantom. In an earlier work, ANN training time is too long. Hence, we propose that the ANN exemplar datasets are decomposed into subsets. Using these subsets, artificial sub neural nets (subnets are initialized and each subnet initial weights are optimized using PSO. Consequently, it was observed that the sequential approach of the proposed method consumes more training time. Hence the parallel strategy is attempted to reduce the computational training time. The parallel approach is further explored for image reconstruction from ‘noisy’ and ‘limited-angle’ datasets also. Keywords: Image reconstruction, Filtered back projection, Artificial neural networks, Particle swarm optimization, Multi-core processors

  14. Parallelized computation for computer simulation of electrocardiograms using personal computers with multi-core CPU and general-purpose GPU.

    Science.gov (United States)

    Shen, Wenfeng; Wei, Daming; Xu, Weimin; Zhu, Xin; Yuan, Shizhong

    2010-10-01

    Biological computations like electrocardiological modelling and simulation usually require high-performance computing environments. This paper introduces an implementation of parallel computation for computer simulation of electrocardiograms (ECGs) in a personal computer environment with an Intel CPU of Core (TM) 2 Quad Q6600 and a GPU of Geforce 8800GT, with software support by OpenMP and CUDA. It was tested in three parallelization device setups: (a) a four-core CPU without a general-purpose GPU, (b) a general-purpose GPU plus 1 core of CPU, and (c) a four-core CPU plus a general-purpose GPU. To effectively take advantage of a multi-core CPU and a general-purpose GPU, an algorithm based on load-prediction dynamic scheduling was developed and applied to setting (c). In the simulation with 1600 time steps, the speedup of the parallel computation as compared to the serial computation was 3.9 in setting (a), 16.8 in setting (b), and 20.0 in setting (c). This study demonstrates that a current PC with a multi-core CPU and a general-purpose GPU provides a good environment for parallel computations in biological modelling and simulation studies. Copyright 2010 Elsevier Ireland Ltd. All rights reserved.

  15. Multi-Core Programming Design Patterns: Stream Processing Algorithms for Dynamic Scene Perceptions

    Science.gov (United States)

    2014-05-01

    Tsukuba, Japan ], 142–151, IEEE (2008). [17] Agullo, E., Demmel, J., Dongarra, J., Hadri, B., Kurzak, J., Langou, J., Ltaief, H., Luszczek, P., and Tomov ...Release; Distribution Unlimited. [20] Song, F., Tomov , S., and Dongarra, J., “Enabling and scaling matrix computations on heterogeneous multi- core and

  16. Wavelength-Dependence of Inter-Core Crosstalk in Homogeneous Multi-Core Fibers

    DEFF Research Database (Denmark)

    Ye, Feihong; Saitoh, Kunimasa; Takenaga, Katsuhiro

    2016-01-01

    The wavelength dependence of inter-core crosstalk in homogeneous multi-core fibers (MCFs) is investigated, and the corresponding analytical expressions are derived. The derived analytical expressions can be used to determine the crosstalk at any wavelength necessary for designing future MCF wavel...

  17. A model for the design and programming of multi-cores

    NARCIS (Netherlands)

    Jesshope, C.; Grandinetti, L.

    2008-01-01

    This paper describes a machine/programming model for the era of multi-core chips. It is derived from the sequential model but replaces sequential composition with concurrent composition at all levels in the program except at the level where the compiler is able to make deterministic decisions on

  18. Early Student Support for Application of Advanced Multi-Core Processor Technologies to Oceanographic Research

    Science.gov (United States)

    2016-05-07

    Student Support for Appl ication of Advanced Multi-Core Processor N00014-12-1-0298 Technologies to Oceanographic Research Sb. GRANT NUMBER Sc...JavaScript, and C to date) to interface with our data storage and distribution application programming interfaces (APis). The second is a complete

  19. Multi-Core Emptiness Checking of Timed Büchi Automata using Inclusion Abstraction

    DEFF Research Database (Denmark)

    Laarman, Alfons; Olesen, Mads Chr.; Dalsgaard, Andreas

    2013-01-01

    This paper contributes to the multi-core model checking of timed automata (TA) with respect to liveness properties, by investigating checking of TA Büchi emptiness under the very coarse inclusion abstraction or zone subsumption, an open problem in this field. We show that in general Büchi emptiness...

  20. Reconfiguration in FPGA-Based Multi-Core Platforms for Hard Real-Time Applications

    DEFF Research Database (Denmark)

    Pezzarossa, Luca; Schoeberl, Martin; Sparsø, Jens

    2016-01-01

    In general-purpose computing multi-core platforms, hardware accelerators and reconfiguration are means to improve performance; i.e., the average-case execution time of a software application. In hard real-time systems, such average-case speed-up is not in itself relevant - it is the worst-case ex...... partial reconfiguration capabilities found in modern FPGAs....

  1. A fast PC algorithm for high dimensional causal discovery with multi-core PCs.

    Science.gov (United States)

    Le, Thuc; Hoang, Tao; Li, Jiuyong; Liu, Lin; Liu, Huawen; Hu, Shu

    2016-07-14

    Discovering causal relationships from observational data is a crucial problem and it has applications in many research areas. The PC algorithm is the state-of-the-art constraint based method for causal discovery. However, runtime of the PC algorithm, in the worst-case, is exponential to the number of nodes (variables), and thus it is inefficient when being applied to high dimensional data, e.g. gene expression datasets. On another note, the advancement of computer hardware in the last decade has resulted in the widespread availability of multi-core personal computers. There is a significant motivation for designing a parallelised PC algorithm that is suitable for personal computers and does not require end users' parallel computing knowledge beyond their competency in using the PC algorithm. In this paper, we develop parallel-PC, a fast and memory efficient PC algorithm using the parallel computing technique. We apply our method to a range of synthetic and real-world high dimensional datasets. Experimental results on a dataset from the DREAM 5 challenge show that the original PC algorithm could not produce any results after running more than 24 hours; meanwhile, our parallel-PC algorithm managed to finish within around 12 hours with a 4-core CPU computer, and less than 6 hours with a 8-core CPU computer. Furthermore, we integrate parallel-PC into a causal inference method for inferring miRNA-mRNA regulatory relationships. The experimental results show that parallel-PC helps improve both the efficiency and accuracy of the causal inference algorithm.

  2. Multi-core System Architecture for Safety-critical Control Applications

    DEFF Research Database (Denmark)

    Li, Gang

    on partitioning design of both multi-core hardware and software architectures, in order to minimize efforts and cost of system certification at the integration time. Hardware architecture design concentrates on a firmware architecture on SoC platforms, providing separated hardware execution environments......Visor, targeting minimized code size, overhead and complexity. It provides isolation between its hosting virtual machines (e.g., general-purpose operating systems, real-time kernels or bare-metal applications). The proposed multi-core hardware and software architectures are evaluated by the ARTEMIS project RECOMP...... certification cost. Meanwhile, hardware platforms with improved processing power are required to execute the applications of larger size. To tackle the two issues mentioned above, the state of the art approaches are using more Electronic Control Units (ECU) in a federated architecture or increasing...

  3. Simple analytical expression for crosstalk estimation in homogeneous trench-assisted multi-core fibers

    DEFF Research Database (Denmark)

    Ye, Feihong; Tu, Jiajing; Saitoh, Kunimasa

    2014-01-01

    to the one with normal step-index structures can then be written by a simple expression. Comparison with numerical simulations confirms that the obtained analytical expression has very good accuracy for crosstalk estimation. The crosstalk properties in trench-assisted multi-core fibers, such as crosstalk......An analytical expression for the mode coupling coe cient in homogeneous trench-assisted multi-core fibers is derived, which has a sim- ple relationship with the one in normal step-index structures. The amount of inter-core crosstalk reduction (in dB) with trench-assisted structures compared...... dependence on core pitch and wavelength-dependent crosstalk, can be obtained by this simple analytical expression....

  4. Electronic Structure Calculations and Adaptation Scheme in Multi-core Computing Environments

    Energy Technology Data Exchange (ETDEWEB)

    Seshagiri, Lakshminarasimhan; Sosonkina, Masha; Zhang, Zhao

    2009-05-20

    Multi-core processing environments have become the norm in the generic computing environment and are being considered for adding an extra dimension to the execution of any application. The T2 Niagara processor is a very unique environment where it consists of eight cores having a capability of running eight threads simultaneously in each of the cores. Applications like General Atomic and Molecular Electronic Structure (GAMESS), used for ab-initio molecular quantum chemistry calculations, can be good indicators of the performance of such machines and would be a guideline for both hardware designers and application programmers. In this paper we try to benchmark the GAMESS performance on a T2 Niagara processor for a couple of molecules. We also show the suitability of using a middleware based adaptation algorithm on GAMESS on such a multi-core environment.

  5. CQPSO scheduling algorithm for heterogeneous multi-core DAG task model

    Science.gov (United States)

    Zhai, Wenzheng; Hu, Yue-Li; Ran, Feng

    2017-07-01

    Efficient task scheduling is critical to achieve high performance in a heterogeneous multi-core computing environment. The paper focuses on the heterogeneous multi-core directed acyclic graph (DAG) task model and proposes a novel task scheduling method based on an improved chaotic quantum-behaved particle swarm optimization (CQPSO) algorithm. A task priority scheduling list was built. A processor with minimum cumulative earliest finish time (EFT) was acted as the object of the first task assignment. The task precedence relationships were satisfied and the total execution time of all tasks was minimized. The experimental results show that the proposed algorithm has the advantage of optimization abilities, simple and feasible, fast convergence, and can be applied to the task scheduling optimization for other heterogeneous and distributed environment.

  6. Research of real-time wavefront reconstruction and control based on multi-core DSP

    Science.gov (United States)

    Wang, Zhui; Zhou, Luchun; Li, Mei; Zhang, Haotian

    2014-09-01

    In an Adaptive Optics system, the Real Time Processor is as important as the human brain. Processing latency is a key index of Real Time Proceesors . In this paper, we propose a new processing method that significantly reduce the processing latency, which combined the design idea of multi-core parallel processing on space and time. In addition, by comparing the operating speed of CPU and the I/O speed of memory, we propose a reasonable memory allocation scheme. The experimental results show that the processing latency is 59.7us per frame using multi-core DSP TMS320C6678 as processing platform. The experiment is conducted on a system with 968 sub-apertures and 913 actuators.

  7. Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion method

    OpenAIRE

    P. Bender; L. K. Bogart; O. Posth; W. Szczerba; S. E. Rogers; A. Castro; L. Nilsson; L. J. Zeng; A. Sugunan; J. Sommertune; A. Fornara; D. González-Alonso; L. Fernández Barquín; C. Johansson

    2017-01-01

    The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9 nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray diffraction and asymmetrical flow field-flow fractionation. Their structure was ultimately disclosed by...

  8. Implementation of Novel Parallel Cyclic Convolution Algorithms in Clusters and Multi-Core Architectures

    Science.gov (United States)

    2014-07-31

    and multi- core configurations [4], [11], [12]. (Completed) c) Find out the limiting computational factors (length, memory, inter- processor ...11], [12]. (Completed) g) Increase the number of minority students that are involved and/or are aware of issues relating DSP algorithms and...our Hardware/Software Testbed Hardware (Cluster): Updated and made operational a 64 processor , 16-node Dell cluster purchased under a previous

  9. A highly efficient multi-core algorithm for clustering extremely large datasets

    Directory of Open Access Journals (Sweden)

    Kraus Johann M

    2010-04-01

    Full Text Available Abstract Background In recent years, the demand for computational power in computational biology has increased due to rapidly growing data sets from microarray and other high-throughput technologies. This demand is likely to increase. Standard algorithms for analyzing data, such as cluster algorithms, need to be parallelized for fast processing. Unfortunately, most approaches for parallelizing algorithms largely rely on network communication protocols connecting and requiring multiple computers. One answer to this problem is to utilize the intrinsic capabilities in current multi-core hardware to distribute the tasks among the different cores of one computer. Results We introduce a multi-core parallelization of the k-means and k-modes cluster algorithms based on the design principles of transactional memory for clustering gene expression microarray type data and categorial SNP data. Our new shared memory parallel algorithms show to be highly efficient. We demonstrate their computational power and show their utility in cluster stability and sensitivity analysis employing repeated runs with slightly changed parameters. Computation speed of our Java based algorithm was increased by a factor of 10 for large data sets while preserving computational accuracy compared to single-core implementations and a recently published network based parallelization. Conclusions Most desktop computers and even notebooks provide at least dual-core processors. Our multi-core algorithms show that using modern algorithmic concepts, parallelization makes it possible to perform even such laborious tasks as cluster sensitivity and cluster number estimation on the laboratory computer.

  10. Addressing the challenges of standalone multi-core simulations in molecular dynamics

    Science.gov (United States)

    Ocaya, R. O.; Terblans, J. J.

    2017-07-01

    Computational modelling in material science involves mathematical abstractions of force fields between particles with the aim to postulate, develop and understand materials by simulation. The aggregated pairwise interactions of the material's particles lead to a deduction of its macroscopic behaviours. For practically meaningful macroscopic scales, a large amount of data are generated, leading to vast execution times. Simulation times of hours, days or weeks for moderately sized problems are not uncommon. The reduction of simulation times, improved result accuracy and the associated software and hardware engineering challenges are the main motivations for many of the ongoing researches in the computational sciences. This contribution is concerned mainly with simulations that can be done on a "standalone" computer based on Message Passing Interfaces (MPI), parallel code running on hardware platforms with wide specifications, such as single/multi- processor, multi-core machines with minimal reconfiguration for upward scaling of computational power. The widely available, documented and standardized MPI library provides this functionality through the MPI_Comm_size (), MPI_Comm_rank () and MPI_Reduce () functions. A survey of the literature shows that relatively little is written with respect to the efficient extraction of the inherent computational power in a cluster. In this work, we discuss the main avenues available to tap into this extra power without compromising computational accuracy. We also present methods to overcome the high inertia encountered in single-node-based computational molecular dynamics. We begin by surveying the current state of the art and discuss what it takes to achieve parallelism, efficiency and enhanced computational accuracy through program threads and message passing interfaces. Several code illustrations are given. The pros and cons of writing raw code as opposed to using heuristic, third-party code are also discussed. The growing trend

  11. Theoretical Investigation of Inter-core Crosstalk Properties in Homogeneous Trench-Assisted Multi-Core Fibers

    DEFF Research Database (Denmark)

    Ye, Feihong; Morioka, Toshio; Tu, Jiajing

    2014-01-01

    We derive analytical expressions for inter-core crosstalk, its dependence on core pitch and wavelength in homogeneous trench-assisted multi-core fibers. They are in excellent agreement with numerical simulation results.......We derive analytical expressions for inter-core crosstalk, its dependence on core pitch and wavelength in homogeneous trench-assisted multi-core fibers. They are in excellent agreement with numerical simulation results....

  12. ParaMiner: A generic pattern mining algorithm for multi-core architectures

    OpenAIRE

    Negrevergne, Benjamin; Termier, Alexandre; Rousset, Marie-Christine; Méhaut, Jean-François

    2013-01-01

    In this paper, we present ParaMiner which is a generic and parallel algorithm for closed pattern mining. ParaMiner is built on the principles of pattern enumeration in strongly accessible set systems. Its efficiency is due to a novel dataset reduction technique (that we call EL-reduction), combined with novel technique for performing dataset reduction in a parallel execution on a multi-core architecture. We illustrate ParaMiner’s genericity by using this algorithm to solve three dif...

  13. Evaluating the scalability of HEP software and multi-core hardware

    CERN Document Server

    Jarp, S; Leduc, J; Nowak, A

    2011-01-01

    As researchers have reached the practical limits of processor performance improvements by frequency scaling, it is clear that the future of computing lies in the effective utilization of parallel and multi-core architectures. Since this significant change in computing is well underway, it is vital for HEP programmers to understand the scalability of their software on modern hardware and the opportunities for potential improvements. This work aims to quantify the benefit of new mainstream architectures to the HEP community through practical benchmarking on recent hardware solutions, including the usage of parallelized HEP applications.

  14. Magnetic, Structural, and Particle Size Analysis of Single- and Multi-Core Magnetic Nanoparticles

    DEFF Research Database (Denmark)

    Ludwig, Frank; Kazakova, Olga; Barquin, Luis Fernandez

    2014-01-01

    We have measured and analyzed three different commercial magnetic nanoparticle systems, both multi-core and single-core in nature, with the particle (core) size ranging from 20 to 100 nm. Complementary analysis methods and same characterization techniques were carried out in different labs...... and the results are compared with each other. The presented results primarily focus on determining the particle size—both the hydrodynamic size and the individual magnetic core size—as well as magnetic and structural properties. The used analysis methods include transmission electron microscopy, static...

  15. Real time polarization sensor image processing on an embedded FPGA/multi-core DSP system

    Science.gov (United States)

    Bednara, Marcus; Chuchacz-Kowalczyk, Katarzyna

    2015-05-01

    Most embedded image processing SoCs available on the market are highly optimized for typical consumer applications like video encoding/decoding, motion estimation or several image enhancement processes as used in DSLR or digital video cameras. For non-consumer applications, on the other hand, optimized embedded hardware is rarely available, so often PC based image processing systems are used. We show how a real time capable image processing system for a non-consumer application - namely polarization image data processing - can be efficiently implemented on an FPGA and multi-core DSP based embedded hardware platform.

  16. Data Parallel Bin-Based Indexing for Answering Queries on Multi-Core Architectures

    Energy Technology Data Exchange (ETDEWEB)

    Gosink, Luke; Wu, Kesheng; Bethel, E. Wes; Owens, John D.; Joy, Kenneth I.

    2009-06-02

    The multi-core trend in CPUs and general purpose graphics processing units (GPUs) offers new opportunities for the database community. The increase of cores at exponential rates is likely to affect virtually every server and client in the coming decade, and presents database management systems with a huge, compelling disruption that will radically change how processing is done. This paper presents a new parallel indexing data structure for answering queries that takes full advantage of the increasing thread-level parallelism emerging in multi-core architectures. In our approach, our Data Parallel Bin-based Index Strategy (DP-BIS) first bins the base data, and then partitions and stores the values in each bin as a separate, bin-based data cluster. In answering a query, the procedures for examining the bin numbers and the bin-based data clusters offer the maximum possible level of concurrency; each record is evaluated by a single thread and all threads are processed simultaneously in parallel. We implement and demonstrate the effectiveness of DP-BIS on two multi-core architectures: a multi-core CPU and a GPU. The concurrency afforded by DP-BIS allows us to fully utilize the thread-level parallelism provided by each architecture--for example, our GPU-based DP-BIS implementation simultaneously evaluates over 12,000 records with an equivalent number of concurrently executing threads. In comparing DP-BIS's performance across these architectures, we show that the GPU-based DP-BIS implementation requires significantly less computation time to answer a query than the CPU-based implementation. We also demonstrate in our analysis that DP-BIS provides better overall performance than the commonly utilized CPU and GPU-based projection index. Finally, due to data encoding, we show that DP-BIS accesses significantly smaller amounts of data than index strategies that operate solely on a column's base data; this smaller data footprint is critical for parallel processors

  17. Compressed sensing MRI with multi-channel data using multi-core processors.

    Science.gov (United States)

    Chang, Ching-Hua; Ji, Jim

    2009-01-01

    Compressed sensing (CS) has emerged as a promising method in the field of magnetic resonance imaging. Taking advantage of the signal sparsity in certain domain via L(1) minimization, CS requires only reduced k-space data to reconstruct an image. Since most clinical MRI scanners are equipped with multi-channel receiver systems, integrating CS with multi-channel systems may not only shorten the scan time but provide a better image quality. However, significant computation time is required to perform CS reconstruction. Furthermore, this burden will be scaled by the number of channels. In this paper, we proposed a reconstruction procedure, which uses multi-core processors to accelerate CS reconstruction from multiple channel data. The performance was tested in terms of comparing to different image sizes and using different number cores of CPU. Experimentally, it shows that the maximum efficiency benefits from parallelizing the CS reconstructions, pipelining multi-channel data on multi-core processors and choosing the numbers of channels as multiple numbers of cores.

  18. Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion method

    Science.gov (United States)

    Bender, P.; Bogart, L. K.; Posth, O.; Szczerba, W.; Rogers, S. E.; Castro, A.; Nilsson, L.; Zeng, L. J.; Sugunan, A.; Sommertune, J.; Fornara, A.; González-Alonso, D.; Barquín, L. Fernández; Johansson, C.

    2017-04-01

    The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9 nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray diffraction and asymmetrical flow field-flow fractionation. Their structure was ultimately disclosed by an indirect Fourier transform of static light scattering, small angle X-ray scattering and small angle neutron scattering data of the colloidal dispersion. The extracted pair distance distribution functions clearly indicated that the cores were mostly accumulated in the outer surface layers of the poly(styrene) spheres. To investigate the magnetic properties, the isothermal magnetisation curves of the multi-core particles (immobilised and dispersed in water) were analysed. The study stands out by applying the same numerical approach to extract the apparent moment distributions of the particles as for the indirect Fourier transform. It could be shown that the main peak of the apparent moment distributions correlated to the expected intrinsic moment distribution of the cores. Additional peaks were observed which signaled deviations of the isothermal magnetisation behavior from the non-interacting case, indicating weak dipolar interactions.

  19. Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion method.

    Science.gov (United States)

    Bender, P; Bogart, L K; Posth, O; Szczerba, W; Rogers, S E; Castro, A; Nilsson, L; Zeng, L J; Sugunan, A; Sommertune, J; Fornara, A; González-Alonso, D; Barquín, L Fernández; Johansson, C

    2017-04-11

    The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9 nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray diffraction and asymmetrical flow field-flow fractionation. Their structure was ultimately disclosed by an indirect Fourier transform of static light scattering, small angle X-ray scattering and small angle neutron scattering data of the colloidal dispersion. The extracted pair distance distribution functions clearly indicated that the cores were mostly accumulated in the outer surface layers of the poly(styrene) spheres. To investigate the magnetic properties, the isothermal magnetisation curves of the multi-core particles (immobilised and dispersed in water) were analysed. The study stands out by applying the same numerical approach to extract the apparent moment distributions of the particles as for the indirect Fourier transform. It could be shown that the main peak of the apparent moment distributions correlated to the expected intrinsic moment distribution of the cores. Additional peaks were observed which signaled deviations of the isothermal magnetisation behavior from the non-interacting case, indicating weak dipolar interactions.

  20. MIMO signal progressing with RLSCMA algorithm for multi-mode multi-core optical transmission system

    Science.gov (United States)

    Bi, Yuan; Liu, Bo; Zhang, Li-jia; Xin, Xiang-jun; Zhang, Qi; Wang, Yong-jun; Tian, Qing-hua; Tian, Feng; Mao, Ya-ya

    2018-01-01

    In the process of transmitting signals of multi-mode multi-core fiber, there will be mode coupling between modes. The mode dispersion will also occur because each mode has different transmission speed in the link. Mode coupling and mode dispersion will cause damage to the useful signal in the transmission link, so the receiver needs to deal received signal with digital signal processing, and compensate the damage in the link. We first analyzes the influence of mode coupling and mode dispersion in the process of transmitting signals of multi-mode multi-core fiber, then presents the relationship between the coupling coefficient and dispersion coefficient. Then we carry out adaptive signal processing with MIMO equalizers based on recursive least squares constant modulus algorithm (RLSCMA). The MIMO equalization algorithm offers adaptive equalization taps according to the degree of crosstalk in cores or modes, which eliminates the interference among different modes and cores in space division multiplexing(SDM) transmission system. The simulation results show that the distorted signals are restored efficiently with fast convergence speed.

  1. An Energy-Aware Runtime Management of Multi-Core Sensory Swarms

    Directory of Open Access Journals (Sweden)

    Sungchan Kim

    2017-08-01

    Full Text Available In sensory swarms, minimizing energy consumption under performance constraint is one of the key objectives. One possible approach to this problem is to monitor application workload that is subject to change at runtime, and to adjust system configuration adaptively to satisfy the performance goal. As today’s sensory swarms are usually implemented using multi-core processors with adjustable clock frequency, we propose to monitor the CPU workload periodically and adjust the task-to-core allocation or clock frequency in an energy-efficient way in response to the workload variations. In doing so, we present an online heuristic that determines the most energy-efficient adjustment that satisfies the performance requirement. The proposed method is based on a simple yet effective energy model that is built upon performance prediction using IPC (instructions per cycle measured online and power equation derived empirically. The use of IPC accounts for memory intensities of a given workload, enabling the accurate prediction of execution time. Hence, the model allows us to rapidly and accurately estimate the effect of the two control knobs, clock frequency adjustment and core allocation. The experiments show that the proposed technique delivers considerable energy saving of up to 45%compared to the state-of-the-art multi-core energy management technique.

  2. Multi-core CPU or GPU-accelerated Multiscale Modeling for Biomolecular Complexes.

    Science.gov (United States)

    Liao, Tao; Zhang, Yongjie; Kekenes-Huskey, Peter M; Cheng, Yuhui; Michailova, Anushka; McCulloch, Andrew D; Holst, Michael; McCammon, J Andrew

    2013-07-01

    Multi-scale modeling plays an important role in understanding the structure and biological functionalities of large biomolecular complexes. In this paper, we present an efficient computational framework to construct multi-scale models from atomic resolution data in the Protein Data Bank (PDB), which is accelerated by multi-core CPU and programmable Graphics Processing Units (GPU). A multi-level summation of Gaus-sian kernel functions is employed to generate implicit models for biomolecules. The coefficients in the summation are designed as functions of the structure indices, which specify the structures at a certain level and enable a local resolution control on the biomolecular surface. A method called neighboring search is adopted to locate the grid points close to the expected biomolecular surface, and reduce the number of grids to be analyzed. For a specific grid point, a KD-tree or bounding volume hierarchy is applied to search for the atoms contributing to its density computation, and faraway atoms are ignored due to the decay of Gaussian kernel functions. In addition to density map construction, three modes are also employed and compared during mesh generation and quality improvement to generate high quality tetrahedral meshes: CPU sequential, multi-core CPU parallel and GPU parallel. We have applied our algorithm to several large proteins and obtained good results.

  3. Energy efficient image/video data transmission on commercial multi-core processors.

    Science.gov (United States)

    Lee, Sungju; Kim, Heegon; Chung, Yongwha; Park, Daihee

    2012-11-01

    In transmitting image/video data over Video Sensor Networks (VSNs), energy consumption must be minimized while maintaining high image/video quality. Although image/video compression is well known for its efficiency and usefulness in VSNs, the excessive costs associated with encoding computation and complexity still hinder its adoption for practical use. However, it is anticipated that high-performance handheld multi-core devices will be used as VSN processing nodes in the near future. In this paper, we propose a way to improve the energy efficiency of image and video compression with multi-core processors while maintaining the image/video quality. We improve the compression efficiency at the algorithmic level or derive the optimal parameters for the combination of a machine and compression based on the tradeoff between the energy consumption and the image/video quality. Based on experimental results, we confirm that the proposed approach can improve the energy efficiency of the straightforward approach by a factor of 2~5 without compromising image/video quality.

  4. Embedded memory design for multi-core and systems on chip

    CERN Document Server

    Mohammad, Baker

    2014-01-01

    This book describes the various tradeoffs systems designers face when designing embedded memory.  Readers designing multi-core systems and systems on chip will benefit from the discussion of different topics from memory architecture, array organization, circuit design techniques and design for test.  The presentation enables a multi-disciplinary approach to chip design, which bridges the gap between the architecture level and circuit level, in order to address yield, reliability and power-related issues for embedded memory.  ·         Provides a comprehensive overview of embedded memory design and associated challenges and choices; ·         Explains tradeoffs and dependencies across different disciplines involved with multi-core and system on chip memory design; ·         Includes detailed discussion of memory hierarchy and its impact on energy and performance; ·         Uses real product examples to demonstrate embedded memory design flow from architecture, to circuit ...

  5. Matrix multiplication with a hypercube algorithm on multi-core processor cluster

    Directory of Open Access Journals (Sweden)

    José Crispín Zavala-Díaz

    2015-01-01

    Full Text Available Se analiza, modifica e implementa el algoritmo de multiplicación de matrices de Dekel, Nassimi y Sahani o hipercubo en un cluster de procesadores multi-core, donde el número de procesadores utilizado es menor al requerido por el algoritmo de n3. Se utilizan 23, 43 y 83 unidades procesadoras para multiplicar matrices de orden de magnitud de 10X10, 102X102 y 103X103. Los resultados del modelo matemático del algoritmo modificado y los obtenidos de la experimentación computacional muestran que es posible alcanzar rapidez y eficiencias paralelas aceptables, en función del número de unidades procesadoras utilizadas. También se muestra que la influencia del enlace externo de comunicación entre los nodos disminuye si se utiliza una combinación de los canales de comunicación disponibles entre los núcleos en un cluster multi-core.

  6. A parallel way of data decomposition approach for ANN based image reconstruction in e-MRI on a multi-core computer system

    Directory of Open Access Journals (Sweden)

    Subramanian Kartheeswaran

    2017-01-01

    Full Text Available This paper presents the performance of sequential data decomposition and parallel data decomposition strategies applied on a Back-Propagation Artificial Neural Network (BP-ANN algorithm. The application system is developed for reconstruction of two-dimensional spatial images from continuous wave electron magnetic resonance imaging (CW-EMRI tomography data, on a multi-core computer. The BP-ANN learns the relationship between the ‘ideal’ images that are reconstructed using filtered back projection (FBP technique and the corresponding projection data from various temporal data of in vivo objects. In an earlier work, it has been reported that as the exemplar sizes are too large, the training time is too long and image PSNR (Peak Signal to Noise Ratio values are too low. Hence, in the present work, we propose that the exemplar datasets are decomposed into subsets. Using these subsets, artificial sub neural nets (subnets are constructed and training is carried out on a multi-core system. Consequently, the sequential approach of the proposed method yields better PSNR images. However, it consumes more training time. But when the parallel approach is applied the computational training time becomes reduced. The parallel approach of BP-ANN is able to simplify reconstruction tasks and is seen improving both in accuracy and efficiency. The performance results are tabulated for different exemplar subset sizes, different subnet sizes and the number of multi-core processors. The parallel approach is further explored for image reconstruction from ‘noisy’ and ‘limited-angle’ datasets.

  7. Physical Layer Multi-Core Prototyping A Dataflow-Based Approach for LTE eNodeB

    CERN Document Server

    Pelcat, Maxime; Piat, Jonathan; Nezan, Jean-François

    2013-01-01

    Base stations developed according to the 3GPP Long Term Evolution (LTE) standard require unprecedented processing power. 3GPP LTE enables data rates beyond hundreds of Mbits/s by using advanced technologies, necessitating a highly complex LTE physical layer. The operating power of base stations is a significant cost for operators, and is currently optimized using state-of-the-art hardware solutions, such as heterogeneous distributed systems. The traditional system design method of porting algorithms to heterogeneous distributed systems based on test-and-refine methods is a manual, thus time-expensive, task.   Physical Layer Multi-Core Prototyping: A Dataflow-Based Approach for LTE eNodeB provides a clear introduction to the 3GPP LTE physical layer and to dataflow-based prototyping and programming. The difficulties in the process of 3GPP LTE physical layer porting are outlined, with particular focus on automatic partitioning and scheduling, load balancing and computation latency reduction, specifically in sys...

  8. Stochastic simulation of chemically reacting systems using multi-core processors.

    Science.gov (United States)

    Gillespie, Colin S

    2012-01-07

    In recent years, computer simulations have become increasingly useful when trying to understand the complex dynamics of biochemical networks, particularly in stochastic systems. In such situations stochastic simulation is vital in gaining an understanding of the inherent stochasticity present, as these models are rarely analytically tractable. However, a stochastic approach can be computationally prohibitive for many models. A number of approximations have been proposed that aim to speed up stochastic simulations. However, the majority of these approaches are fundamentally serial in terms of central processing unit (CPU) usage. In this paper, we propose a novel simulation algorithm that utilises the potential of multi-core machines. This algorithm partitions the model into smaller sub-models. These sub-models are then simulated, in parallel, on separate CPUs. We demonstrate that this method is accurate and can speed-up the simulation by a factor proportional to the number of processors available.

  9. GTfold: Enabling parallel RNA secondary structure prediction on multi-core desktops

    DEFF Research Database (Denmark)

    Swenson, M Shel; Anderson, Joshua; Ash, Andrew

    2012-01-01

    Accurate and efficient RNA secondary structure prediction remains an important open problem in computational molecular biology. Historically, advances in computing technology have enabled faster and more accurate RNA secondary structure predictions. Previous parallelized prediction programs...... achieved significant improvements in runtime, but their implementations were not portable from niche high-performance computers or easily accessible to most RNA researchers. With the increasing prevalence of multi-core desktop machines, a new parallel prediction program is needed to take full advantage......, on machines with four or more cores. Conclusions GTfold supports advances in RNA structural biology by reducing the timescales for secondary structure prediction. The difference will be particularly valuable to researchers working with lengthy RNA sequences, such as RNA viral genomes....

  10. Virtual optical network mapping and core allocation in elastic optical networks using multi-core fibers

    Science.gov (United States)

    Xuan, Hejun; Wang, Yuping; Xu, Zhanqi; Hao, Shanshan; Wang, Xiaoli

    2017-11-01

    Virtualization technology can greatly improve the efficiency of the networks by allowing the virtual optical networks to share the resources of the physical networks. However, it will face some challenges, such as finding the efficient strategies for virtual nodes mapping, virtual links mapping and spectrum assignment. It is even more complex and challenging when the physical elastic optical networks using multi-core fibers. To tackle these challenges, we establish a constrained optimization model to determine the optimal schemes of optical network mapping, core allocation and spectrum assignment. To solve the model efficiently, tailor-made encoding scheme, crossover and mutation operators are designed. Based on these, an efficient genetic algorithm is proposed to obtain the optimal schemes of the virtual nodes mapping, virtual links mapping, core allocation. The simulation experiments are conducted on three widely used networks, and the experimental results show the effectiveness of the proposed model and algorithm.

  11. Linux block IO: introducing multi-queue SSD access on multi-core systems

    DEFF Research Database (Denmark)

    Bjørling, Matias; Axboe, Jens; Nellans, David

    2013-01-01

    . In this work, we demonstrate that the block layer within the operating system, originally designed to handle thousands of IOPS, has become a bottleneck to overall storage system performance, specially on the high NUMA-factor processors systems that are becoming commonplace. We describe the design of a next......The IO performance of storage devices has accelerated from hundreds of IOPS five years ago, to hundreds of thousands of IOPS today, and tens of millions of IOPS projected in five years. This sharp evolution is primarily due to the introduc- tion of NAND-flash devices and their data parallel design...... generation block layer that is capable of handling tens of millions of IOPS on a multi-core system equipped with a single storage device. Our experiments show that our design scales graciously with the number of cores, even on NUMA systems with multiple sockets....

  12. A Heterogeneous Multi-core Architecture with a Hardware Kernel for Control Systems

    DEFF Research Database (Denmark)

    Li, Gang; Guan, Wei; Sierszecki, Krzysztof

    2012-01-01

    several advantages over a similar kernel implemented in software: higher-speed processing capability, parallel computation, and separation between the kernel itself and the applications being run. A microbenchmark has been used to compare the hardware kernel with the software kernel, and compare......Rapid industrialisation has resulted in a demand for improved embedded control systems with features such as predictability, high processing performance and low power consumption. Software kernel implementation on a single processor is becoming more difficult to satisfy those constraints....... This paper presents a multi-core architecture incorporating a hardware kernel on FPGAs, intended for high performance applications in control engineering domain. First, the hardware kernel is investigated on the basis of a component-based real-time kernel HARTEX (Hard Real-Time Executive for Control Systems...

  13. Multi-Core DSP Based Parallel Architecture for FMCW SAR Real-Time Imaging

    Directory of Open Access Journals (Sweden)

    C. F. Gu

    2015-12-01

    Full Text Available This paper presents an efficient parallel processing architecture using multi-core Digital Signal Processor (DSP to improve the capability of real-time imaging for Frequency Modulated Continuous Wave Synthetic Aperture Radar (FMCW SAR. With the application of the proposed processing architecture, the imaging algorithm is modularized, and each module is efficiently realized by the proposed processing architecture. In each module, the data processing of different cores is executed in parallel, also the data transmission and data processing of each core are synchronously carried out, so that the processing time for SAR imaging is reduced significantly. Specifically, the time of corner turning operation, which is very time-consuming, is ignored under computationally intensive case. The proposed parallel architecture is applied to a compact Ku-band FMCW SAR prototype to achieve real-time imageries with 34 cm x 51 cm (range x azimuth resolution.

  14. Robust motion estimation on a low-power multi-core DSP

    Science.gov (United States)

    Igual, Francisco D.; Botella, Guillermo; García, Carlos; Prieto, Manuel; Tirado, Francisco

    2013-12-01

    This paper addresses the efficient implementation of a robust gradient-based optical flow model in a low-power platform based on a multi-core digital signal processor (DSP). The aim of this work was to carry out a feasibility study on the use of these devices in autonomous systems such as robot navigation, biomedical assistance, or tracking, with not only power restrictions but also real-time requirements. We consider the C6678 DSP from Texas Instruments (Dallas, TX, USA) as the target platform of our implementation. The interest of this research is particularly relevant in optical flow scope because this system can be considered as an alternative solution for mid-range video resolutions when a combination of in-processor parallelism with optimizations such as efficient memory-hierarchy exploitation and multi-processor parallelization are applied.

  15. A Power-Efficient 3-D On-Chip Interconnect for Multi-Core Accelerators with Stacked L2 Cache

    OpenAIRE

    Kang, Kyungsu; Park, Sangho; Lee, Jong-Bae; Benini, Luca; De Micheli, Giovanni

    2016-01-01

    The use of multi-core clusters is a promising option for data-intensive embedded applications such as multi-modal sensor fusion, image understanding, mobile augmented reality. In this paper, we propose a power-efficient 3-D on-chip interconnect for multi-core clusters with stacked L2 cache memory. A new switch design makes a circuit-switched Mesh-of-Tree (MoT) interconnect reconfigurable to support power-gating of processing cores, memory blocks, and unnecessary interconnect resources (routin...

  16. Micro mirrors based coupling of light to multi-core fiber realizing in-fiber photonic neural network processor

    Science.gov (United States)

    Cohen, Eyal; Malka, Dror; Shemer, Amir; Shahmoon, Asaf; London, Michael; Zalevsky, Zeev

    2017-02-01

    Hardware implementation of artificial neural networks facilitates real-time parallel processing of massive data sets. Optical neural networks offer low-volume 3D connectivity together with large bandwidth and minimal heat production in contrast to electronic implementation. Here, we present a DMD based approaches to realize energetically efficient light coupling into a multi-core fiber realizing a unique design for in-fiber optical neural networks. Neurons and synapses are realized as individual cores in a multi-core fiber. Optical signals are transferred transversely between cores by means of optical coupling. Pump driven amplification in Erbium-doped cores mimics synaptic interactions. In order to dynamically and efficiently couple light into the multi-core fiber a DMD based micro mirror device is used to perform proper beam shaping operation. The beam shaping reshapes the light into a large set of points in space matching the positions of the required cores in the entrance plane to the multi-core fiber.

  17. High-count Multi-Core Fibers for Space-Division Multiplexing with Propagation-Direction Interleaving

    DEFF Research Database (Denmark)

    Ye, Feihong; Saitoh, Kunimasa; Takara, Hidehiko

    2015-01-01

    By introducing a square lattice structure for bidirectional core assignments in multi-core fibers, the e ectiveness of propagation-direction interleaving for crosstalk reduction can be increased, realizing a 24-core fiber with-30.6 dB crosstalk over 100 km....

  18. Sensitive magnetic biodetection using magnetic multi-core nanoparticles and RCA coils

    Science.gov (United States)

    Ahrentorp, Fredrik; Blomgren, Jakob; Jonasson, Christian; Sarwe, Anna; Sepehri, Sobhan; Eriksson, Emil; Kalaboukhov, Alexei; Jesorka, Aldo; Winkler, Dag; Schneiderman, Justin F.; Nilsson, Mats; Albert, Jan; de la Torre, Teresa Zardán Gómez; Strømme, Maria; Johansson, Christer

    2017-04-01

    We use functionalized iron oxide magnetic multi-core particles of 100 nm in size (hydrodynamic particle diameter) and AC susceptometry (ACS) methods to measure the binding reactions between the magnetic nanoparticles (MNPs) and bio-analyte products produced from DNA segments using the rolling circle amplification (RCA) method. We use sensitive induction detection techniques in order to measure the ACS response. The DNA is amplified via RCA to generate RCA coils with a specific size that is dependent on the amplification time. After about 75 min of amplification we obtain an average RCA coil diameter of about 1 μm. We determine a theoretical limit of detection (LOD) in the range of 11 attomole (corresponding to an analyte concentration of 55 fM for a sample volume of 200 μL) from the ACS dynamic response after the MNPs have bound to the RCA coils and the measured ACS readout noise. We also discuss further possible improvements of the LOD.

  19. Fault-Tolerant, Real-Time, Multi-Core Computer System

    Science.gov (United States)

    Gostelow, Kim P.

    2012-01-01

    A document discusses a fault-tolerant, self-aware, low-power, multi-core computer for space missions with thousands of simple cores, achieving speed through concurrency. The proposed machine decides how to achieve concurrency in real time, rather than depending on programmers. The driving features of the system are simple hardware that is modular in the extreme, with no shared memory, and software with significant runtime reorganizing capability. The document describes a mechanism for moving ongoing computations and data that is based on a functional model of execution. Because there is no shared memory, the processor connects to its neighbors through a high-speed data link. Messages are sent to a neighbor switch, which in turn forwards that message on to its neighbor until reaching the intended destination. Except for the neighbor connections, processors are isolated and independent of each other. The processors on the periphery also connect chip-to-chip, thus building up a large processor net. There is no particular topology to the larger net, as a function at each processor allows it to forward a message in the correct direction. Some chip-to-chip connections are not necessarily nearest neighbors, providing short cuts for some of the longer physical distances. The peripheral processors also provide the connections to sensors, actuators, radios, science instruments, and other devices with which the computer system interacts.

  20. Multi-core parallel reconstruction method for cone-beam computed tomography

    Science.gov (United States)

    Li, Mingjun; Zhang, Dinghua; Huang, Kuidong; Yu, Qingchao; Zhang, Shunli

    2009-10-01

    In the application of nondestructive testing and evaluation, this paper mainly deals with the problem of improving the image reconstruction speed in cone beam computed tomography (CBCT). FDK algorithm is a time costing method for CBCT image reconstruction, due to the voluminous data and long operating process. With the help of data organization and task distribution, we improved the SIMD instructions in Z-line data first reconstruction algorithm, which is an improved method based on the FDK algorithm. And then, we run it parallelized with multi-core technology and a certain divide-and-conquer strategy to get a fast reconstruction speed in CBCT. Finally, we evaluate the effectiveness of our method from a numerical test of a blade model on an 8-core computer with four channel memory. Our method has got a considerable speedup ratio of 217.22 to the FDK algorithm, and implemented the back-projection process of reconstructing the inscribed cylinder of 5123 reconstruction space in about 30 seconds. It has got the same image quality with the Z-line data first method, which retains the computational precision with FDK algorithm. Basically, our method has met the requirement of real-time reconstruction.

  1. Efficient string similarity join in multi-core and distributed systems.

    Science.gov (United States)

    Yan, Cairong; Zhao, Xue; Zhang, Qinglong; Huang, Yongfeng

    2017-01-01

    In big data area a significant challenge about string similarity join is to find all similar pairs more efficiently. In this paper, we propose a parallel processing framework for efficient string similarity join. First, the input is split into some disjoint small subsets according to the joint frequency distribution and the interval distribution of strings. Then the filter-verification strategy is adopted in the computation of string similarity for each subset so that the number of candidate pairs is reduced before an effective pruning strategy is used to improve the performance. Finally, the operation of string join is executed in parallel. Para-Join algorithm based on the multi-threading technique is proposed to implement the framework in a multi-core system while Pada-Join algorithm based on Spark platform is proposed to implement the framework in a cluster system. We prove that Para-Join and Pada-Join cannot only avoid reduplicate computation but also ensure the completeness of the result. Experimental results show that Para-Join can achieve high efficiency and significantly outperform than state-of-the-art approaches, meanwhile, Pada-Join can work on large datasets.

  2. Behavior-aware cache hierarchy optimization for low-power multi-core embedded systems

    Science.gov (United States)

    Zhao, Huatao; Luo, Xiao; Zhu, Chen; Watanabe, Takahiro; Zhu, Tianbo

    2017-07-01

    In modern embedded systems, the increasing number of cores requires efficient cache hierarchies to ensure data throughput, but such cache hierarchies are restricted by their tumid size and interference accesses which leads to both performance degradation and wasted energy. In this paper, we firstly propose a behavior-aware cache hierarchy (BACH) which can optimally allocate the multi-level cache resources to many cores and highly improved the efficiency of cache hierarchy, resulting in low energy consumption. The BACH takes full advantage of the explored application behaviors and runtime cache resource demands as the cache allocation bases, so that we can optimally configure the cache hierarchy to meet the runtime demand. The BACH was implemented on the GEM5 simulator. The experimental results show that energy consumption of a three-level cache hierarchy can be saved from 5.29% up to 27.94% compared with other key approaches while the performance of the multi-core system even has a slight improvement counting in hardware overhead.

  3. A Multi-Core Parallelization Strategy for Statistical Significance Testing in Learning Classifier Systems.

    Science.gov (United States)

    Rudd, James; Moore, Jason H; Urbanowicz, Ryan J

    2013-11-01

    Permutation-based statistics for evaluating the significance of class prediction, predictive attributes, and patterns of association have only appeared within the learning classifier system (LCS) literature since 2012. While still not widely utilized by the LCS research community, formal evaluations of test statistic confidence are imperative to large and complex real world applications such as genetic epidemiology where it is standard practice to quantify the likelihood that a seemingly meaningful statistic could have been obtained purely by chance. LCS algorithms are relatively computationally expensive on their own. The compounding requirements for generating permutation-based statistics may be a limiting factor for some researchers interested in applying LCS algorithms to real world problems. Technology has made LCS parallelization strategies more accessible and thus more popular in recent years. In the present study we examine the benefits of externally parallelizing a series of independent LCS runs such that permutation testing with cross validation becomes more feasible to complete on a single multi-core workstation. We test our python implementation of this strategy in the context of a simulated complex genetic epidemiological data mining problem. Our evaluations indicate that as long as the number of concurrent processes does not exceed the number of CPU cores, the speedup achieved is approximately linear.

  4. Sensitive magnetic biodetection using magnetic multi-core nanoparticles and RCA coils

    Energy Technology Data Exchange (ETDEWEB)

    Ahrentorp, Fredrik; Blomgren, Jakob; Jonasson, Christian; Sarwe, Anna [Acreo Swedish ICT AB, Arvid Hedvalls Backe 4, Göteborg (Sweden); Sepehri, Sobhan; Eriksson, Emil; Kalaboukhov, Alexei; Jesorka, Aldo; Winkler, Dag [Department of Microtechnology and Nanoscience – MC2, Chalmers University of Technology, Göteborg (Sweden); Schneiderman, Justin F. [Institute of Neuroscience and Physiology, University of Gothenburg and MedTech West, Göteborg (Sweden); Nilsson, Mats [Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Stockholm (Sweden); Albert, Jan [Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm (Sweden); Department of Clinical Microbiology, Karolinska University Hospital, Stockholm (Sweden); Zardán Gómez de la Torre, Teresa; Strømme, Maria [Uppsala University, Uppsala (Sweden); Johansson, Christer, E-mail: christer.johansson@acreo.se [Acreo Swedish ICT AB, Arvid Hedvalls Backe 4, Göteborg (Sweden)

    2017-04-01

    We use functionalized iron oxide magnetic multi-core particles of 100 nm in size (hydrodynamic particle diameter) and AC susceptometry (ACS) methods to measure the binding reactions between the magnetic nanoparticles (MNPs) and bio-analyte products produced from DNA segments using the rolling circle amplification (RCA) method. We use sensitive induction detection techniques in order to measure the ACS response. The DNA is amplified via RCA to generate RCA coils with a specific size that is dependent on the amplification time. After about 75 min of amplification we obtain an average RCA coil diameter of about 1 µm. We determine a theoretical limit of detection (LOD) in the range of 11 attomole (corresponding to an analyte concentration of 55 fM for a sample volume of 200 µL) from the ACS dynamic response after the MNPs have bound to the RCA coils and the measured ACS readout noise. We also discuss further possible improvements of the LOD. - Highlights: • Biosensing using Brownian relaxation of functionalized magnetic nanoparticles. • Rolling circle amplification and magnetic nanoparticles enables biosensing. • Theoretical limit of detection estimated from the signal noise gives about 55 fM.

  5. Improving the performance of heterogeneous multi-core processors by modifying the cache coherence protocol

    Science.gov (United States)

    Fang, Juan; Hao, Xiaoting; Fan, Qingwen; Chang, Zeqing; Song, Shuying

    2017-05-01

    In the Heterogeneous multi-core architecture, CPU and GPU processor are integrated on the same chip, which poses a new challenge to the last-level cache management. In this architecture, the CPU application and the GPU application execute concurrently, accessing the last-level cache. CPU and GPU have different memory access characteristics, so that they have differences in the sensitivity of last-level cache (LLC) capacity. For many CPU applications, a reduced share of the LLC could lead to significant performance degradation. On the contrary, GPU applications can tolerate increase in memory access latency when there is sufficient thread-level parallelism. Taking into account the GPU program memory latency tolerance characteristics, this paper presents a method that let GPU applications can access to memory directly, leaving lots of LLC space for CPU applications, in improving the performance of CPU applications and does not affect the performance of GPU applications. When the CPU application is cache sensitive, and the GPU application is insensitive to the cache, the overall performance of the system is improved significantly.

  6. Load-balancing of Molecular Dynamics bySubdivision And Distribution of Domains in LargeMulti-Core Systems

    OpenAIRE

    SEIM, PATRIK

    2013-01-01

    Abstract Molecular dynamics simulates the behaviour of particles in interaction by calculating the trajectories using computational demanding numerical methods. A Molecular dynamics application often takes advantage of modern computer architecture with large multi-core systems by subdividing the simulated scenario into smaller domains. The subdivided domains are distributed over a number of instances running in parallel to gain computational performance. A problem with domain decomposition is...

  7. Effects of rare earth doping on multi-core iron oxide nanoparticles properties

    Science.gov (United States)

    Petran, Anca; Radu, Teodora; Borodi, Gheorghe; Nan, Alexandrina; Suciu, Maria; Turcu, Rodica

    2018-01-01

    New multi-core iron oxide magnetic nanoparticles doped with rare earth metals (Gd, Eu) were obtained by a one step synthesis procedure using a solvothermal method for potential biomedical applications. The obtained clusters were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray microanalysis (EDX), X-ray photoelectron spectroscopy (XPS) and magnetization measurements. They possess high colloidal stability, a saturation magnetization of up to 52 emu/g, and nearly spherical shape. The presence of rare earth ions in the obtained samples was confirmed by EDX and XPS. XRD analysis proved the homogeneous distribution of the trivalent rare earth ions in the inverse-spinel structure of magnetite and the increase of crystal strain upon doping the samples. XPS study reveals the valence state and the cation distribution on the octahedral and tetrahedral sites of the analysed samples. The observed shift of the XPS valence band spectra maximum in the direction of higher binding energies after rare earth doping, as well as theoretical valence band calculations prove the presence of Gd and Eu ions in octahedral sites. The blood protein adsorption ability of the obtained samples surface, the most important factor of the interaction between biomaterials and body fluids, was assessed by interaction with bovine serum albumin (BSA). The rare earth doped clusters surface show higher afinity for binding BSA. In vitro cytotoxicity test results for the studied samples showed no cytotoxicity in low and medium doses, establishing a potential perspective for rare earth doped MNC to facilitate multiple therapies in a single formulation for cancer theranostics.

  8. Power-Energy Simulation for Multi-Core Processors in Bench-marking

    Directory of Open Access Journals (Sweden)

    Mona A. Abou-Of

    2017-01-01

    Full Text Available At Microarchitectural level, multi-core processor, as a complex System on Chip, has sophisticated on-chip components including cores, shared caches, interconnects and system controllers such as memory and ethernet controllers. At technological level, architects should consider the device types forecast in the International Technology Roadmap for Semiconductors (ITRS. Energy simulation enables architects to study two important metrics simultaneously. Timing is a key element of the CPU performance that imposes constraints on the CPU target clock frequency. Power and the resulting heat impose more severe design constraints, such as core clustering, while semiconductor industry is providing more transistors in the die area in pace with Moore’s law. Energy simulators provide a solution for such serious challenge. Energy is modelled either by combining performance benchmarking tool with a power simulator or by an integrated framework of both performance simulator and power profiling system. This article presents and asses trade-offs between different architectures using four cores battery-powered mobile systems by running a custom-made and a standard benchmark tools. The experimental results assure the Energy/ Frequency convexity rule over a range of frequency settings on different number of enabled cores. The reported results show that increasing the number of cores has a great effect on increasing the power consumption. However, a minimum energy dissipation will occur at a lower frequency which reduces the power consumption. Despite that, increasing the number of cores will also increase the effective cores value which will reflect a better processor performance.

  9. Design Tools for Accelerating Development and Usage of Multi-Core Computing Platforms

    Science.gov (United States)

    2014-04-01

    up of separate parts for program and data, while the L2 cache provides unified space for program and data. The memory subsystem includes 512... CUDA recognizes the contiguous accesses across threads, the subsequent image processing operations induce vectorized accesses to global memory . We...2007] NVIDIA CUDA Compute Unified Device Architecture: Programming Guide, Version 1.0, June 2007. [Owens 2008] J. D. Owens, M. Houston, D. Luebke, S

  10. Suitability of magnetic single- and multi-core nanoparticles to detect protein binding with dynamic magnetic measurement techniques

    Energy Technology Data Exchange (ETDEWEB)

    Remmer, Hilke, E-mail: h.remmer@tu-bs.de; Dieckhoff, Jan; Schilling, Meinhard; Ludwig, Frank

    2015-04-15

    We investigated the binding of biotinylated proteins to various streptavidin functionalized magnetic nanoparticles with different dynamic magnetic measurement techniques to examine their potential for homogeneous bioassays. As particle systems, single-core nanoparticles with a nominal core diameter of 30 nm as well as multi-core nanoparticles with hydrodynamic sizes varying between nominally 60 nm and 100 nm were chosen. As experimental techniques, fluxgate magnetorelaxometry (MRX), complex ac susceptibility (ACS) and measurements of the phase lag between rotating field and sample magnetization are applied. MRX measurements are only suited for the detection of small analytes if the multivalency of functionalized nanoparticles and analytes causes cross-linking, thus forming larger aggregates. ACS measurements showed for all nanoparticle systems a shift of the imaginary part's maximum towards small frequencies. In rotating field measurements only the single-core nanoparticle systems with dominating Brownian mechanism exhibit an increase of the phase lag upon binding in the investigated frequency range. The coexistence of Brownian and Néel relaxation processes can cause a more complex phase lag change behavior, as demonstrated for multi-core nanoparticle systems. - Highlights: • Cealization of homogeneous magnetic bioassays using different magnetic techniques. • Comparison of single- and multi-core nanoparticle systems. • ac Susceptibility favorable for detection of small analytes. • Magnetorelaxometry favorable for detection of large analytes or cross-linking assays.

  11. Visualizing 3D/4D environmental data using many-core graphics processing units (GPUs) and multi-core central processing units (CPUs)

    Science.gov (United States)

    Li, Jing; Jiang, Yunfeng; Yang, Chaowei; Huang, Qunying; Rice, Matt

    2013-09-01

    Visualizing 3D/4D environmental data is critical to understanding and predicting environmental phenomena for relevant decision making. This research explores how to best utilize graphics process units (GPUs) and central processing units (CPUs) collaboratively to speed up a generic geovisualization process. Taking the visualization of dust storms as an example, we developed a systematic 3D/4D geovisualization framework including preprocessing, coordinate transformation interpolation, and rendering. To compare the potential speedup of using GPUs versus that of using CPUs, we have implemented visualization components based on both multi-core CPUs and many-core GPUs. We found that (1) multi-core CPUs and many-core GPUs can improve the efficiency of mathematical calculations and rendering using multithreading techniques; (2) given the same amount of data, when increasing the size of blocks of GPUs for coordinate transformation, the executing time of interpolation and rendering drops consistently after reaching a peak; (3) the best performances obtained by GPU-based implementations in all the three major processes, are usually faster than CPU-based implementations whereas the best performance of rendering with GPUs is very close to that with CPUs; and (4) as the GPU on-board memory limits the capabilities of processing large volume data, preprocessing data with CPUs is necessary when visualizing large volume data which exceed the on-board memory of GPUs. However, the efficiency may be significantly hampered by the relative high-latency of the data exchange between CPUs and GPUs. Therefore, visualization of median size 3D/4D environmental data using GPUs is a better solution than that of using CPUs.

  12. Fork-join and data-driven execution models on multi-core architectures: Case study of the FMM

    KAUST Repository

    Amer, Abdelhalim

    2013-01-01

    Extracting maximum performance of multi-core architectures is a difficult task primarily due to bandwidth limitations of the memory subsystem and its complex hierarchy. In this work, we study the implications of fork-join and data-driven execution models on this type of architecture at the level of task parallelism. For this purpose, we use a highly optimized fork-join based implementation of the FMM and extend it to a data-driven implementation using a distributed task scheduling approach. This study exposes some limitations of the conventional fork-join implementation in terms of synchronization overheads. We find that these are not negligible and their elimination by the data-driven method, with a careful data locality strategy, was beneficial. Experimental evaluation of both methods on state-of-the-art multi-socket multi-core architectures showed up to 22% speed-ups of the data-driven approach compared to the original method. We demonstrate that a data-driven execution of FMM not only improves performance by avoiding global synchronization overheads but also reduces the memory-bandwidth pressure caused by memory-intensive computations. © 2013 Springer-Verlag.

  13. 3D Seismic Imaging through Reverse-Time Migration on Homogeneous and Heterogeneous Multi-Core Processors

    Directory of Open Access Journals (Sweden)

    Mauricio Araya-Polo

    2009-01-01

    Full Text Available Reverse-Time Migration (RTM is a state-of-the-art technique in seismic acoustic imaging, because of the quality and integrity of the images it provides. Oil and gas companies trust RTM with crucial decisions on multi-million-dollar drilling investments. But RTM requires vastly more computational power than its predecessor techniques, and this has somewhat hindered its practical success. On the other hand, despite multi-core architectures promise to deliver unprecedented computational power, little attention has been devoted to mapping efficiently RTM to multi-cores. In this paper, we present a mapping of the RTM computational kernel to the IBM Cell/B.E. processor that reaches close-to-optimal performance. The kernel proves to be memory-bound and it achieves a 98% utilization of the peak memory bandwidth. Our Cell/B.E. implementation outperforms a traditional processor (PowerPC 970MP in terms of performance (with an 15.0× speedup and energy-efficiency (with a 10.0× increase in the GFlops/W delivered. Also, it is the fastest RTM implementation available to the best of our knowledge. These results increase the practical usability of RTM. Also, the RTM-Cell/B.E. combination proves to be a strong competitor in the seismic arena.

  14. Shape Sensing Using a Multi-Core Optical Fiber Having an Arbitrary Initial Shape in the Presence of Extrinsic Forces

    Science.gov (United States)

    Rogge, Matthew D. (Inventor); Moore, Jason P. (Inventor)

    2014-01-01

    Shape of a multi-core optical fiber is determined by positioning the fiber in an arbitrary initial shape and measuring strain over the fiber's length using strain sensors. A three-coordinate p-vector is defined for each core as a function of the distance of the corresponding cores from a center point of the fiber and a bending angle of the cores. The method includes calculating, via a controller, an applied strain value of the fiber using the p-vector and the measured strain for each core, and calculating strain due to bending as a function of the measured and the applied strain values. Additionally, an apparent local curvature vector is defined for each core as a function of the calculated strain due to bending. Curvature and bend direction are calculated using the apparent local curvature vector, and fiber shape is determined via the controller using the calculated curvature and bend direction.

  15. PSNR BASED OPTIMIZATION APPLIED TO ALGEBRAIC RECONSTRUCTION TECHNIQUE FOR IMAGE RECONSTRUCTION ON A MULTI-CORE SYSTEM

    Directory of Open Access Journals (Sweden)

    Bharathi Lakshmi Agnimarimuthu

    2017-06-01

    Full Text Available The present work attempts to reveal a parallel Algebraic Reconstruction Technique (pART to reduce the computational speed of reconstructing artifact-free images from projections. ART is an iterative algorithm well known to reconstruct artifact-free images with limited number of projections. In this work, a novel idea has been focused on to optimize the number of iterations mandatory based on Peak to Signal Noise Ratio (PSNR to reconstruct an image. However, it suffers of worst computation speed. Hence, an attempt is made to reduce the computation time by running iterative algorithm on a multi-core parallel environment. The execution times are computed for both serial and parallel implementations of ART using different projection data, and, tabulated for comparison. The experimental results demonstrate that the parallel computing environment provides a source of high computational power leading to obtain reconstructed image instantaneously.

  16. Towards spatial isolation design in a multi-core real-time kernel targeting safety-critical applications

    DEFF Research Database (Denmark)

    Li, Gang; Top, Søren

    2013-01-01

    In mixed-criticality systems, applications naturally have different safety criticality levels. Partitioning technology is usually used to enable the integration of such mixed criticality applications upon one platform, aiming at reducing hardware, power consumption and especially certification co...... and software can easily achieve this isolation. At last, the spatial isolation is evaluated using a statistical sampling method and its performance is tested in terms of task switch, system call and footprint........ According to formulated isolation requirements, a simple partitioning multi-core hardware architecture is proposed using SoC and memory protection units, and the kernel is extended to support spatial isolation between the kernel and applications as well as between applications. Combined design of hardware...

  17. Real time magnetic field and flux measurements for tokamak control using a multi-core PCI Express system

    Energy Technology Data Exchange (ETDEWEB)

    Giannone, L. [Max-Planck-Institut fuer Plasmaphysik, IPP-EURATOM Association, 85748 Garching (Germany)], E-mail: Louis.Giannone@ipp.mpg.de; Schneider, W.; McCarthy, P.J.; Sips, A.C.C.; Treutterer, W.; Behler, K.; Eich, T.; Fuchs, J.C.; Hicks, N.; Kallenbach, A.; Maraschek, M.; Mlynek, A.; Neu, G.; Pautasso, G.; Raupp, G.; Reich, M.; Schuhbeck, K.H.; Stober, J.; Volpe, F.; Zehetbauer, T. [Max-Planck-Institut fuer Plasmaphysik, IPP-EURATOM Association, 85748 Garching (Germany)] (and others)

    2009-06-15

    The existing real time system for the position and shape control in ASDEX Upgrade has been extended to calculate magnetic flux surfaces in real time using a multi-core PCI Express system running LabVIEW RT. The availability of reflective memory for LabVIEW RT will allow this system to be connected to the control system and other diagnostics in a multi-platform real time network. The measured response of each magnetic probe to the individual poloidal field coil currents in the absence of plasma current is compared to the calculated value. Prior to a tokamak discharge this comparison can be used to check for failure of the magnetic probe, flux loop or integrator.

  18. Phase Conjugated Twin Waves in 8×21×224Gbit/s DP-16QAM Multi-core Fiber Transmission

    DEFF Research Database (Denmark)

    Asif, Rameez; Ye, Feihong; Morioka, Toshio

    2014-01-01

    Efficient suppression of non-linear interactions has been n umerically analyzed via phase conjugated twin waves in 8 × 21 × 224 Gbit/s multi-core fiber transmission. Results show a Q-factor improvement of 2.8 dB, consequently doubling the transmission distance.......Efficient suppression of non-linear interactions has been n umerically analyzed via phase conjugated twin waves in 8 × 21 × 224 Gbit/s multi-core fiber transmission. Results show a Q-factor improvement of 2.8 dB, consequently doubling the transmission distance....

  19. Fast multi-core based multimodal registration of 2D cross-sections and 3D datasets

    Directory of Open Access Journals (Sweden)

    Pielot Rainer

    2010-01-01

    Full Text Available Abstract Background Solving bioinformatics tasks often requires extensive computational power. Recent trends in processor architecture combine multiple cores into a single chip to improve overall performance. The Cell Broadband Engine (CBE, a heterogeneous multi-core processor, provides power-efficient and cost-effective high-performance computing. One application area is image analysis and visualisation, in particular registration of 2D cross-sections into 3D image datasets. Such techniques can be used to put different image modalities into spatial correspondence, for example, 2D images of histological cuts into morphological 3D frameworks. Results We evaluate the CBE-driven PlayStation 3 as a high performance, cost-effective computing platform by adapting a multimodal alignment procedure to several characteristic hardware properties. The optimisations are based on partitioning, vectorisation, branch reducing and loop unrolling techniques with special attention to 32-bit multiplies and limited local storage on the computing units. We show how a typical image analysis and visualisation problem, the multimodal registration of 2D cross-sections and 3D datasets, benefits from the multi-core based implementation of the alignment algorithm. We discuss several CBE-based optimisation methods and compare our results to standard solutions. More information and the source code are available from http://cbe.ipk-gatersleben.de. Conclusions The results demonstrate that the CBE processor in a PlayStation 3 accelerates computational intensive multimodal registration, which is of great importance in biological/medical image processing. The PlayStation 3 as a low cost CBE-based platform offers an efficient option to conventional hardware to solve computational problems in image processing and bioinformatics.

  20. On-chip grating coupler array on the SOI platform for fan-in/fan-out of multi-core fibers with low insertion loss and crosstalk

    DEFF Research Database (Denmark)

    Ding, Yunhong; Ye, Feihong; Peucheret, Christophe

    2014-01-01

    We design and fabricate a compact multi-core fiber fan-in/fan-out using a fully-etched grating coupler array on the SOI platform. Lowest coupling loss of 6.8 dB with 3 dB bandwidth of 48 nm and crosstalk lower than ×32 dB are demonstrated....

  1. Dynamics of 1.12 Tbit/s WDM Flex-Coherent Super-Channels in Multi-Core Fiber Transmission

    DEFF Research Database (Denmark)

    Asif, Rameez; Ye, Feihong; Morioka, Toshio

    2014-01-01

    We numerically report on the dynamics of intra-core non-lin ear effects in 1.12 Tbit/s super-channel flex-coherent transmission over 640 km multi-core fiber link. The system is evaluated with DP-QPSK and DP-16QAM modulations c o-propagating....

  2. Streaming Progressive TIN Densification Filter for Airborne LiDAR Point Clouds Using Multi-Core Architectures

    Directory of Open Access Journals (Sweden)

    Xiaochen Kang

    2014-08-01

    Full Text Available As one of the key steps in the processing of airborne light detection and ranging (LiDAR data, filtering often consumes a huge amount of time and physical memory. Conventional sequential algorithms are often inefficient in filtering massive point clouds, due to their huge computational cost and Input/Output (I/O bottlenecks. The progressive TIN (Triangulated Irregular Network densification (PTD filter is a commonly employed iterative method that mainly consists of the TIN generation and the judging functions. However, better quality from the progressive process comes at the cost of increasing computing time. Fortunately, it is possible to take advantage of state-of-the-art multi-core computing facilities to speed up this computationally intensive task. A streaming framework for filtering point clouds by encapsulating the PTD filter into independent computing units is proposed in this paper. Through overlapping multiple computing units and the I/O events, the efficiency of the proposed method is improved greatly. More importantly, this framework is adaptive to many filters. Experiments suggest that the proposed streaming PTD (SPTD is able to improve the performance of massive point clouds processing and alleviate the I/O bottlenecks. The experiments also demonstrate that this SPTD allows the quick processing of massive point clouds with better adaptability. In a 12-core environment, the SPTD gains a speedup of 7.0 for filtering 249 million points.

  3. All-solid multi-core fiber-based multipath Mach-Zehnder interferometer for temperature sensing

    Science.gov (United States)

    Zhao, Zhiyong; Tang, Ming; Fu, Songnian; Liu, Shuang; Wei, Huifeng; Cheng, Yu; Tong, Weijun; Shum, Perry Ping; Liu, Deming

    2013-09-01

    A novel multipath Mach-Zehnder interferometer (m-MZI) is proposed and experimentally demonstrated, which is fabricated by fusion splicing a segment of all-solid multi-core fiber (MCF) between two sections of single mode fiber-28 with a well-controlled lateral offset at the splice points. Beam propagation method-based simulation results demonstrated light passing throw MCF from multiple paths. Experiments with different lengths of MCF were implemented to investigate our proposed m-MZI’s response to temperature and strain. Compared with previously reported optical fiber modal interferometers, higher phase sensitivity can be obtained in our scheme due to the multipath interference configuration embedded in one fiber. A very high temperature sensitivity of 130.6 pm/°C has been achieved, and the maximum strain sensitivity is less than 0.284 pm/μɛ in all experiments. A record low strain-to-temperature cross-sensitivity of 6.2 × 10-4 °C/μɛ has been realized, and it shows great significance of this in-fiber integrated multipath Mach-Zehnder interferometer in practical temperature sensing applications.

  4. Interaction sorting method for molecular dynamics on multi-core SIMD CPU architecture.

    Science.gov (United States)

    Matvienko, Sergey; Alemasov, Nikolay; Fomin, Eduard

    2015-02-01

    Molecular dynamics (MD) is widely used in computational biology for studying binding mechanisms of molecules, molecular transport, conformational transitions, protein folding, etc. The method is computationally expensive; thus, the demand for the development of novel, much more efficient algorithms is still high. Therefore, the new algorithm designed in 2007 and called interaction sorting (IS) clearly attracted interest, as it outperformed the most efficient MD algorithms. In this work, a new IS modification is proposed which allows the algorithm to utilize SIMD processor instructions. This paper shows that the improvement provides an additional gain in performance, 9% to 45% in comparison to the original IS method.

  5. T-CREST: Time-predictable multi-core architecture for embedded systems

    DEFF Research Database (Denmark)

    Schoeberl, Martin; Abbaspourseyedi, Sahar; Jordan, Alexander

    2015-01-01

    domain shows that the WCET can be reduced for computation-intensive tasks when distributing the tasks on several cores and using the network-on-chip for communication. With three cores the WCET is improved by a factor of 1.8 and with 15 cores by a factor of 5.7.The T-CREST project is the result...... of a collaborative research and development project executed by eight partners from academia and industry. The European Commission funded T-CREST....

  6. Research of real-time video processing system based on 6678 multi-core DSP

    Science.gov (United States)

    Li, Xiangzhen; Xie, Xiaodan; Yin, Xiaoqiang

    2017-10-01

    In the information age, the rapid development in the direction of intelligent video processing, complex algorithm proposed the powerful challenge on the performance of the processor. In this article, through the FPGA + TMS320C6678 frame structure, the image to fog, merge into an organic whole, to stabilize the image enhancement, its good real-time, superior performance, break through the traditional function of video processing system is simple, the product defects such as single, solved the video application in security monitoring, video, etc. Can give full play to the video monitoring effectiveness, improve enterprise economic benefits.

  7. MULTI-CORE AND OPTICAL PROCESSOR RELATED APPLICATIONS RESEARCH AT OAK RIDGE NATIONAL LABORATORY

    Energy Technology Data Exchange (ETDEWEB)

    Barhen, Jacob [ORNL; Kerekes, Ryan A [ORNL; ST Charles, Jesse Lee [ORNL; Buckner, Mark A [ORNL

    2008-01-01

    High-speed parallelization of common tasks holds great promise as a low-risk approach to achieving the significant increases in signal processing and computational performance required for next generation innovations in reconfigurable radio systems. Researchers at the Oak Ridge National Laboratory have been working on exploiting the parallelization offered by this emerging technology and applying it to a variety of problems. This paper will highlight recent experience with four different parallel processors applied to signal processing tasks that are directly relevant to signal processing required for SDR/CR waveforms. The first is the EnLight Optical Core Processor applied to matched filter (MF) correlation processing via fast Fourier transform (FFT) of broadband Dopplersensitive waveforms (DSW) using active sonar arrays for target tracking. The second is the IBM CELL Broadband Engine applied to 2-D discrete Fourier transform (DFT) kernel for image processing and frequency domain processing. And the third is the NVIDIA graphical processor applied to document feature clustering. EnLight Optical Core Processor. Optical processing is inherently capable of high-parallelism that can be translated to very high performance, low power dissipation computing. The EnLight 256 is a small form factor signal processing chip (5x5 cm2) with a digital optical core that is being developed by an Israeli startup company. As part of its evaluation of foreign technology, ORNL's Center for Engineering Science Advanced Research (CESAR) had access to a precursor EnLight 64 Alpha hardware for a preliminary assessment of capabilities in terms of large Fourier transforms for matched filter banks and on applications related to Doppler-sensitive waveforms. This processor is optimized for array operations, which it performs in fixed-point arithmetic at the rate of 16 TeraOPS at 8-bit precision. This is approximately 1000 times faster than the fastest DSP available today. The optical core

  8. Cellular automata-based modelling and simulation of biofilm structure on multi-core computers.

    Science.gov (United States)

    Skoneczny, Szymon

    2015-01-01

    The article presents a mathematical model of biofilm growth for aerobic biodegradation of a toxic carbonaceous substrate. Modelling of biofilm growth has fundamental significance in numerous processes of biotechnology and mathematical modelling of bioreactors. The process following double-substrate kinetics with substrate inhibition proceeding in a biofilm has not been modelled so far by means of cellular automata. Each process in the model proposed, i.e. diffusion of substrates, uptake of substrates, growth and decay of microorganisms and biofilm detachment, is simulated in a discrete manner. It was shown that for flat biofilm of constant thickness, the results of the presented model agree with those of a continuous model. The primary outcome of the study was to propose a mathematical model of biofilm growth; however a considerable amount of focus was also placed on the development of efficient algorithms for its solution. Two parallel algorithms were created, differing in the way computations are distributed. Computer programs were created using OpenMP Application Programming Interface for C++ programming language. Simulations of biofilm growth were performed on three high-performance computers. Speed-up coefficients of computer programs were compared. Both algorithms enabled a significant reduction of computation time. It is important, inter alia, in modelling and simulation of bioreactor dynamics.

  9. F3D Image Processing and Analysis for Many - and Multi-core Platforms

    Energy Technology Data Exchange (ETDEWEB)

    2014-10-01

    F3D is written in OpenCL, so it achieve[sic] platform-portable parallelism on modern mutli-core CPUs and many-core GPUs. The interface and mechanims to access F3D core are written in Java as a plugin for Fiji/ImageJ to deliver several key image-processing algorithms necessary to remove artifacts from micro-tomography data. The algorithms consist of data parallel aware filters that can efficiently utilizes[sic] resources and can work on out of core datasets and scale efficiently across multiple accelerators. Optimizing for data parallel filters, streaming out of core datasets, and efficient resource and memory and data managements over complex execution sequence of filters greatly expedites any scientific workflow with image processing requirements. F3D performs several different types of 3D image processing operations, such as non-linear filtering using bilateral filtering and/or median filtering and/or morphological operators (MM). F3D gray-level MM operators are one-pass constant time methods that can perform morphological transformations with a line-structuring element oriented in discrete directions. Additionally, MM operators can be applied to gray-scale images, and consist of two parts: (a) a reference shape or structuring element, which is translated over the image, and (b) a mechanism, or operation, that defines the comparisons to be performed between the image and the structuring element. This tool provides a critical component within many complex pipelines such as those for performing automated segmentation of image stacks. F3D is also called a "descendent" of Quant-CT, another software we developed in the past. These two modules are to be integrated in a next version. Further details were reported in: D.M. Ushizima, T. Perciano, H. Krishnan, B. Loring, H. Bale, D. Parkinson, and J. Sethian. Structure recognition from high-resolution images of ceramic composites. IEEE International Conference on Big Data, October 2014.

  10. Dynamic Voltage-Frequency and Workload Joint Scaling Power Management for Energy Harvesting Multi-Core WSN Node SoC

    Directory of Open Access Journals (Sweden)

    Xiangyu Li

    2017-02-01

    Full Text Available This paper proposes a scheduling and power management solution for energy harvesting heterogeneous multi-core WSN node SoC such that the system continues to operate perennially and uses the harvested energy efficiently. The solution consists of a heterogeneous multi-core system oriented task scheduling algorithm and a low-complexity dynamic workload scaling and configuration optimization algorithm suitable for light-weight platforms. Moreover, considering the power consumption of most WSN applications have the characteristic of data dependent behavior, we introduce branches handling mechanism into the solution as well. The experimental result shows that the proposed algorithm can operate in real-time on a lightweight embedded processor (MSP430, and that it can make a system do more valuable works and make more than 99.9% use of the power budget.

  11. Dynamic Voltage-Frequency and Workload Joint Scaling Power Management for Energy Harvesting Multi-Core WSN Node SoC.

    Science.gov (United States)

    Li, Xiangyu; Xie, Nijie; Tian, Xinyue

    2017-02-08

    This paper proposes a scheduling and power management solution for energy harvesting heterogeneous multi-core WSN node SoC such that the system continues to operate perennially and uses the harvested energy efficiently. The solution consists of a heterogeneous multi-core system oriented task scheduling algorithm and a low-complexity dynamic workload scaling and configuration optimization algorithm suitable for light-weight platforms. Moreover, considering the power consumption of most WSN applications have the characteristic of data dependent behavior, we introduce branches handling mechanism into the solution as well. The experimental result shows that the proposed algorithm can operate in real-time on a lightweight embedded processor (MSP430), and that it can make a system do more valuable works and make more than 99.9% use of the power budget.

  12. Multi-core Microprocessors

    Indian Academy of Sciences (India)

    Resonance – Journal of Science Education. Current Issue : Vol. 23, Issue 1. Current Issue Volume 23 | Issue 1. January 2018. Home · Volumes & Issues · Categories · Special Issues · Search · Editorial Board · Information for Authors · Subscription ...

  13. Implications of Multi-Core Architectures on the Development of Multiple Independent Levels of Security (MILS) Compliant Systems

    Science.gov (United States)

    2012-10-01

    40 Figure 16: CBEA spider network...processors, that we cannot be sure that any analysis or checklist is complete. We have found errors, discrepancies and incompleteness in the written...tasks. First, a process was defined to create a checklist for all the components needing evaluation in the multicore architecture. Second, a general

  14. Development and Evaluation of Vectorised and Multi-Core Event Reconstruction Algorithms within the CMS Software Framework

    CERN Multimedia

    CERN. Geneva

    2012-01-01

    The processing of data acquired by the CMS detector at LHC is carried out with an object-oriented C++ software framework: CMSSW. With the increasing luminosity delivered by the LHC, the treatment of recorded data requires extraordinary large computing resources, also in terms of CPU usage. A possible solution to cope with this task is the exploitation of the features offered by the latest microprocessor architectures. Modern CPUs present several vector units, the capacity of which is growing steadily with the introduction of new processor generations. Moreover, an increasing number of cores per die is offered by the main vendors, even on consumer hardware. Most recent C++ compilers provide facilities to take advantage of such innovations, either by explicit statements in the programs’ sources or automatically adapting the generated machine instructions to the available hardware, without the need of modifying the existing code base. Programming techniques to implement reconstruction algorithms and optimised ...

  15. rapidGSEA: Speeding up gene set enrichment analysis on multi-core CPUs and CUDA-enabled GPUs.

    Science.gov (United States)

    Hundt, Christian; Hildebrandt, Andreas; Schmidt, Bertil

    2016-09-23

    Gene Set Enrichment Analysis (GSEA) is a popular method to reveal significant dependencies between predefined sets of gene symbols and observed phenotypes by evaluating the deviation of gene expression values between cases and controls. An established measure of inter-class deviation, the enrichment score, is usually computed using a weighted running sum statistic over the whole set of gene symbols. Due to the lack of analytic expressions the significance of enrichment scores is determined using a non-parametric estimation of their null distribution by permuting the phenotype labels of the probed patients. Accordingly, GSEA is a time-consuming task due to the large number of required permutations to accurately estimate the nominal p-value - a circumstance that is even more pronounced during multiple hypothesis testing since its estimate is lower-bounded by the inverse number of samples in permutation space. We present rapidGSEA - a software suite consisting of two tools for facilitating permutation-based GSEA: cudaGSEA and ompGSEA. cudaGSEA is a CUDA-accelerated tool using fine-grained parallelization schemes on massively parallel architectures while ompGSEA is a coarse-grained multi-threaded tool for multi-core CPUs. Nominal p-value estimation of 4,725 gene sets on a data set consisting of 20,639 unique gene symbols and 200 patients (183 cases + 17 controls) each probing one million permutations takes 19 hours on a Xeon CPU and less than one hour on a GeForce Titan X GPU while the established GSEA tool from the Broad Institute (broadGSEA) takes roughly 13 days. cudaGSEA outperforms broadGSEA by around two orders-of-magnitude on a single Tesla K40c or GeForce Titan X GPU. ompGSEA provides around one order-of-magnitude speedup to broadGSEA on a standard Xeon CPU. The rapidGSEA suite is open-source software and can be downloaded at https://github.com/gravitino/cudaGSEA as standalone application or package for the R framework.

  16. Experiences Using Hybrid MPI/OpenMP in the Real World: Parallelization of a 3D CFD Solver for Multi-Core Node Clusters

    Directory of Open Access Journals (Sweden)

    Gabriele Jost

    2010-01-01

    Full Text Available Today most systems in high-performance computing (HPC feature a hierarchical hardware design: shared-memory nodes with several multi-core CPUs are connected via a network infrastructure. When parallelizing an application for these architectures it seems natural to employ a hierarchical programming model such as combining MPI and OpenMP. Nevertheless, there is the general lore that pure MPI outperforms the hybrid MPI/OpenMP approach. In this paper, we describe the hybrid MPI/OpenMP parallelization of IR3D (Incompressible Realistic 3-D code, a full-scale real-world application, which simulates the environmental effects on the evolution of vortices trailing behind control surfaces of underwater vehicles. We discuss performance, scalability and limitations of the pure MPI version of the code on a variety of hardware platforms and show how the hybrid approach can help to overcome certain limitations.

  17. Application Performance Analysis and Efficient Execution on Systems with multi-core CPUs, GPUs and MICs: A Case Study with Microscopy Image Analysis.

    Science.gov (United States)

    Teodoro, George; Kurc, Tahsin; Andrade, Guilherme; Kong, Jun; Ferreira, Renato; Saltz, Joel

    2017-01-01

    We carry out a comparative performance study of multi-core CPUs, GPUs and Intel Xeon Phi (Many Integrated Core-MIC) with a microscopy image analysis application. We experimentally evaluate the performance of computing devices on core operations of the application. We correlate the observed performance with the characteristics of computing devices and data access patterns, computation complexities, and parallelization forms of the operations. The results show a significant variability in the performance of operations with respect to the device used. The performances of operations with regular data access are comparable or sometimes better on a MIC than that on a GPU. GPUs are more efficient than MICs for operations that access data irregularly, because of the lower bandwidth of the MIC for random data accesses. We propose new performance-aware scheduling strategies that consider variabilities in operation speedups. Our scheduling strategies significantly improve application performance compared to classic strategies in hybrid configurations.

  18. Accelerated event-by-event Monte Carlo microdosimetric calculations of electrons and protons tracks on a multi-core CPU and a CUDA-enabled GPU.

    Science.gov (United States)

    Kalantzis, Georgios; Tachibana, Hidenobu

    2014-01-01

    For microdosimetric calculations event-by-event Monte Carlo (MC) methods are considered the most accurate. The main shortcoming of those methods is the extensive requirement for computational time. In this work we present an event-by-event MC code of low projectile energy electron and proton tracks for accelerated microdosimetric MC simulations on a graphic processing unit (GPU). Additionally, a hybrid implementation scheme was realized by employing OpenMP and CUDA in such a way that both GPU and multi-core CPU were utilized simultaneously. The two implementation schemes have been tested and compared with the sequential single threaded MC code on the CPU. Performance comparison was established on the speed-up for a set of benchmarking cases of electron and proton tracks. A maximum speedup of 67.2 was achieved for the GPU-based MC code, while a further improvement of the speedup up to 20% was achieved for the hybrid approach. The results indicate the capability of our CPU-GPU implementation for accelerated MC microdosimetric calculations of both electron and proton tracks without loss of accuracy. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  19. Efficient volume reconstruction for parallel-beam computed laminography by filtered backprojection on multi-core clusters.

    Science.gov (United States)

    Myagotin, Anton; Voropaev, Alexey; Helfen, Lukas; Hänschke, Daniel; Baumbach, Tilo

    2013-12-01

    Computed laminography (CL) was developed to use X-rays from synchrotron sources for high-resolution imaging of the internal structure of a flat specimen from a series of 2-D projection images. The projections are acquired by irradiation of the sample under different rotation angles where the object rotation axis is inclined with respect to the beam direction. This yields for laterally extended objects a more uniform average transmitted intensity during sample rotation compared with computed tomography (CT). The reconstruction problem of CL cannot be reduced to a data-efficient 2-D case (as for parallel-beam CT) since each single slice perpendicular to the rotation axis requires a 2-D region on the detector as input data for all projection directions. This paper describes a computationally efficient reconstruction procedure based on filtered backprojection (FBP) adapted to the CL acquisition geometry. From the Fourier slice theorem, we derive a framework for analytic image reconstruction and outline implementation details of the generic FBP algorithm. Different approaches reducing the reconstruction time by means of parallel and distributed computations are considered and evaluated.

  20. Advanced and flexible multi-carrier receiver architecture for high-count multi-core fiber based space division multiplexed applications

    Science.gov (United States)

    Asif, Rameez

    2016-06-01

    Space division multiplexing (SDM), incorporating multi-core fibers (MCFs), has been demonstrated for effectively maximizing the data capacity in an impending capacity crunch. To achieve high spectral-density through multi-carrier encoding while simultaneously maintaining transmission reach, benefits from inter-core crosstalk (XT) and non-linear compensation must be utilized. In this report, we propose a proof-of-concept unified receiver architecture that jointly compensates optical Kerr effects, intra- and inter-core XT in MCFs. The architecture is analysed in multi-channel 512 Gbit/s dual-carrier DP-16QAM system over 800 km 19-core MCF to validate the digital compensation of inter-core XT. Through this architecture: (a) we efficiently compensates the inter-core XT improving Q-factor by 4.82 dB and (b) achieve a momentous gain in transmission reach, increasing the maximum achievable distance from 480 km to 1208 km, via analytical analysis. Simulation results confirm that inter-core XT distortions are more relentless for cores fabricated around the central axis of cladding. Predominantly, XT induced Q-penalty can be suppressed to be less than 1 dB up-to -11.56 dB of inter-core XT over 800 km MCF, offering flexibility to fabricate dense core structures with same cladding diameter. Moreover, this report outlines the relationship between core pitch and forward-error correction (FEC).

  1. Double-layer microwave absorber based on nanocrystalline CoFe2O4 and CoFe2O4/PANI multi-core/shell composites

    Directory of Open Access Journals (Sweden)

    Xu Yewen

    2017-02-01

    Full Text Available Organic-inorganic nano-CoFe2O4/PANI (polyaniline multi-core/shell composites have been successfully synthesized by chemical oxidative polymerization of aniline. The characterization results showed that the ferrite nanocrystals were efficiently embedded in PANI. The electromagnetic parameters of the composites were measured by a vector network analyser in the frequency range of 2 GHz to 18 GHz. Double-layer absorbers based on the CoFe2O4/PANI composite (matching layer and calcined CoFe2O4 ferrite (absorbing layer have been designed. The reflection loss of the microwave absorbers of both single layer and double-layer with a total thickness of 2.0 mm and 2.5 mm was calculated according to transmission-line theory. The results indicated that the minimum reflection loss of the CoFe2O4/PANI composite was −19.0 dB at 16.2 GHz at the thickness of 2.0 mm and −23.6 dB at 13.1 GHz at the thickness of 2.5 mm, respectively. The minimum reflection loss for double-layer absorbers reached −28.8 dB at 16.2 GHz at the total thickness of 2.0 mm, and −31.1 dB at 12.8 GHz at the total thickness of 2.5 mm. The absorption bandwidth under −10 dB was 4.2 GHz (13.8 GHz to 18.0 GHz and 5.5 GHz (10.3 GHz to 15.8 GHz, respectively. The results show that the reflection loss and absorption bandwidth of the double-layer absorbers are obviously enhanced compared to corresponding single layer absorbers.

  2. Scalable multi-core model checking

    NARCIS (Netherlands)

    Laarman, Alfons

    2014-01-01

    Our modern society relies increasingly on the sound performance of digital systems. Guaranteeing that these systems actually behave correctly according to their specification is not a trivial task, yet it is essential for mission-critical systems like auto-pilots, (nuclear) power-plant controllers

  3. Testing Infrastructure for Operating System Kernel Development

    DEFF Research Database (Denmark)

    Walter, Maxwell; Karlsson, Sven

    2014-01-01

    Testing is an important part of system development, and to test effectively we require knowledge of the internal state of the system under test. Testing an operating system kernel is a challenge as it is the operating system that typically provides access to this internal state information. Multi......-core kernels pose an even greater challenge due to concurrency and their shared kernel state. In this paper, we present a testing framework that addresses these challenges by running the operating system in a virtual machine, and using virtual machine introspection to both communicate with the kernel...... and obtain information about the system. We have also developed an in-kernel testing API that we can use to develop a suite of unit tests in the kernel. We are using our framework for for the development of our own multi-core research kernel....

  4. Real-time parallel implementation of Pulse-Doppler radar signal processing chain on a massively parallel machine based on multi-core DSP and Serial RapidIO interconnect

    Science.gov (United States)

    Klilou, Abdessamad; Belkouch, Said; Elleaume, Philippe; Le Gall, Philippe; Bourzeix, François; Hassani, Moha M'Rabet

    2014-12-01

    Pulse-Doppler radars require high-computing power. A massively parallel machine has been developed in this paper to implement a Pulse-Doppler radar signal processing chain in real-time fashion. The proposed machine consists of two C6678 digital signal processors (DSPs), each with eight DSP cores, interconnected with Serial RapidIO (SRIO) bus. In this study, each individual core is considered as the basic processing element; hence, the proposed parallel machine contains 16 processing elements. A straightforward model has been adopted to distribute the Pulse-Doppler radar signal processing chain. This model provides low latency, but communication inefficiency limits system performance. This paper proposes several optimizations that greatly reduce the inter-processor communication in a straightforward model and improves the parallel efficiency of the system. A use case of the Pulse-Doppler radar signal processing chain has been used to illustrate and validate the concept of the proposed mapping model. Experimental results show that the parallel efficiency of the proposed parallel machine is about 90%.

  5. Collective Memory Transfers for Multi-Core Chips

    Energy Technology Data Exchange (ETDEWEB)

    Michelogiannakis, George; Williams, Alexander; Shalf, John

    2013-11-13

    Future performance improvements for microprocessors have shifted from clock frequency scaling towards increases in on-chip parallelism. Performance improvements for a wide variety of parallel applications require domain-decomposition of data arrays from a contiguous arrangement in memory to a tiled layout for on-chip L1 data caches and scratchpads. How- ever, DRAM performance suffers under the non-streaming access patterns generated by many independent cores. We propose collective memory scheduling (CMS) that actively takes control of collective memory transfers such that requests arrive in a sequential and predictable fashion to the memory controller. CMS uses the hierarchically tiled arrays formal- ism to compactly express collective operations, which greatly improves programmability over conventional prefetch or list- DMA approaches. CMS reduces application execution time by up to 32% and DRAM read power by 2.2×, compared to a baseline DMA architecture such as STI Cell.

  6. CMS event processing multi-core efficiency status

    Science.gov (United States)

    Jones, C. D.; CMS Collaboration

    2017-10-01

    In 2015, CMS was the first LHC experiment to begin using a multi-threaded framework for doing event processing. This new framework utilizes Intel’s Thread Building Block library to manage concurrency via a task based processing model. During the 2015 LHC run period, CMS only ran reconstruction jobs using multiple threads because only those jobs were sufficiently thread efficient. Recent work now allows simulation and digitization to be thread efficient. In addition, during 2015 the multi-threaded framework could run events in parallel but could only use one thread per event. Work done in 2016 now allows multiple threads to be used while processing one event. In this presentation we will show how these recent changes have improved CMS’s overall threading and memory efficiency and we will discuss work to be done to further increase those efficiencies.

  7. Implementing the conjugate gradient algorithm on multi-core systems

    NARCIS (Netherlands)

    Wiggers, W.A.; Bakker, Vincent; Kokkeler, Andre B.J.; Smit, Gerardus Johannes Maria; Nurmi, J.; Takala, J.; Vainio, O.

    2007-01-01

    In linear solvers, like the conjugate gradient algorithm, sparse-matrix vector multiplication is an important kernel. Due to the sparseness of the matrices, the solver runs relatively slow. For digital optical tomography (DOT), a large set of linear equations have to be solved which currently takes

  8. Scaling NS-3 DCE Experiments on Multi-Core Servers

    Science.gov (United States)

    2016-06-15

    and 2, share a level 1 ( L1 ) and level 2 ( L2 ) cache. All of the cores on a node share the level 3, or Last Level, cache (LLC). If a core wants to...on finding a way to improve the speed of the simulations so we could complete our intended goal, we did not definitively determine the root cause of

  9. Supermodes in Coupled Multi-Core Waveguide Structures

    Science.gov (United States)

    2016-04-01

    supermodes (e)–(l) of a 4-core grid-array structure computed using COMSOL . their respective overlap integrals. Hence, the field evolution is described by i dUm...theory) are in excellent agreement with finite element simulations using COMSOL as shown in Fig. 12. D. Higher-Order Supermodes in Ring-Array Structures...structure computed using COMSOL . Then the coupled-mode equation for the N-core ring-array can be written as i d dz [ U t Un ] + M̄ [ U t Un ] = 0, (3.27

  10. Flexible Tagged Architecture for Trustworthy Multi-core Platforms

    Science.gov (United States)

    2015-06-01

    to a control flow graph ( CFG ). From the 16 Approved for Public Release; Distribution Unlimited. control flow graph, we formulate an ILP problem that...maximize the following metric: t = X B2BCFG N B · c B,max (1) where B CFG is the set of basic blocks in the control flow graph. N B is the number of...Once the worst-case stalls for each MFG node is found, the worst-case stalls for a CFG node, s B,max , can be computed by simply summing the stalls from

  11. Low pain vs no pain multi-core Haskells

    DEFF Research Database (Denmark)

    Aswad, Mustafa; Trinder, Phil; Al Zain, Abyd

    2011-01-01

    to compare a ‘no pain’, i.e. entirely implicit, parallel implementation with three ‘low pain’, i.e. semi-explicit, language implementations. We report detailed studies comparing the parallel performance delivered. The comparative performance metric is speedup which normalises against sequential performance...

  12. A lock circuit for a multi-core processor

    DEFF Research Database (Denmark)

    2015-01-01

    An integrated circuit comprising a multiple processor cores and a lock circuit that comprises a queue register with respective bits set or reset via respective, connections dedicated to respective processor cores, whereby the queue register identifies those among the multiple processor cores that...

  13. Multi-Core LTSmin: Marrying Modularity and Scalability

    NARCIS (Netherlands)

    Laarman, Alfons; van de Pol, Jan Cornelis; Weber, M.; Bobaru, Michaela; Havelund, Klaus; Holzmann, Gerard J.; Joshi, Rajeev

    The LTSmin toolset provides multiple generation and on-the-fly analysis algorithms for large graphs (state spaces), typically generated from concise behavioral specifications (models) of systems. LTSmin supports a variety of input languages, but its key feature is modularity: language frontends,

  14. An integrated approach to improving the parallel applications development process

    Energy Technology Data Exchange (ETDEWEB)

    Rasmussen, Craig E [Los Alamos National Laboratory; Watson, Gregory R [IBM; Tibbitts, Beth R [IBM

    2009-01-01

    The development of parallel applications is becoming increasingly important to a broad range of industries. Traditionally, parallel programming was a niche area that was primarily exploited by scientists trying to model extremely complicated physical phenomenon. It is becoming increasingly clear, however, that continued hardware performance improvements through clock scaling and feature-size reduction are simply not going to be achievable for much longer. The hardware vendor's approach to addressing this issue is to employ parallelism through multi-processor and multi-core technologies. While there is little doubt that this approach produces scaling improvements, there are still many significant hurdles to be overcome before parallelism can be employed as a general replacement to more traditional programming techniques. The Parallel Tools Platform (PTP) Project was created in 2005 in an attempt to provide developers with new tools aimed at addressing some of the parallel development issues. Since then, the introduction of a new generation of peta-scale and multi-core systems has highlighted the need for such a platform. In this paper, we describe some of the challenges facing parallel application developers, present the current state of PTP, and provide a simple case study that demonstrates how PTP can be used to locate a potential deadlock situation in an MPI code.

  15. Multicore Processing and ARTEMIS - An incentive to develop the European Multiprocessor research

    DEFF Research Database (Denmark)

    Seceleanu, Tiberius; Tenhunen, Hannu; Jerraya, Ahmed

    2006-01-01

    to a traditional SOC view, concurrency at all levels plays a deterministic role, while problems such as power consumption, addressable separately in the nodes of a DS, must be unitary considered. Thus, distinct research and development issues must be defined for MPSOC, building on the indispensable experience...... in the recent period that technological advances allow for a change of this paradigm towards on-chip distributed platforms, or multi-core, or multi processor system-on-chip (MPSOC). A multiprocessor architecture may be defined as: onchip clusters of heterogeneous functionality modules, cooperating...

  16. Autonomic networking-on-chip bio-inspired specification, development, and verification

    CERN Document Server

    Cong-Vinh, Phan

    2011-01-01

    Despite the growing mainstream importance and unique advantages of autonomic networking-on-chip (ANoC) technology, Autonomic Networking-On-Chip: Bio-Inspired Specification, Development, and Verification is among the first books to evaluate research results on formalizing this emerging NoC paradigm, which was inspired by the human nervous system. The FIRST Book to Assess Research Results, Opportunities, & Trends in ""BioChipNets"" The third book in the Embedded Multi-Core Systems series from CRC Press, this is an advanced technical guide and reference composed of contributions from prominent re

  17. Current developments in and importance of high-performance computing in drug discovery.

    Science.gov (United States)

    Pitera, Jed W

    2009-05-01

    A number of current trends that are being adopted to reshape the field of high-performance computing exist, including multi-core systems, accelerators, and software frameworks for large-scale intrinsically parallel applications. These trends intersect with recent developments in computational chemistry to provide new capabilities for computer-aided drug discovery. Although this review focuses primarily on the application domains of molecular modeling and biomolecular simulation, these computing changes are relevant for other computationally intensive tasks, such as instrument data processing and chemoinformatics.

  18. Development

    DEFF Research Database (Denmark)

    Alavi, Amin

    2012-01-01

    reviewing WTO rules addressing development and developing countries and the EU´s application of them......reviewing WTO rules addressing development and developing countries and the EU´s application of them...

  19. Development of A Clara Service for Neutron Reconstruction

    Science.gov (United States)

    Carbonneau, Joshua; Moog, Mark; Gilfoyle, Gerard; Gyurjyan, Vardan; Paul, Sebouh; Jefferson Lab Collaboration

    2011-10-01

    The Clara framework is currently being used by Jefferson Lab to reconstruct simulated events from CLAS12, a large particle detector being built as part of the Jefferson Laboratory 12 GeV Upgrade. Clara is a software package that allows for large programming tasks to be split into components and distributed among different computers. Clara takes full advantage of the multi-core, multi-threaded capabilities of modern computers, allowing for greater efficiency when processing large data sets. These components, called services, are language-independent, and communication between them is implemented as a publish/subscribe architecture. When data is fed to a service, it processes the data and then ``publishes'' the result, allowing all services that have ``subscribed'' to the output to receive the data. Applications can be built from already existing services to meet a user's need. A neutron reconstruction algorithm has been developed as a C++ service that extends the existing electron reconstruction algorithm.

  20. Development.

    Directory of Open Access Journals (Sweden)

    Jacques Lucan

    2006-05-01

    Full Text Available In the conception of an architectural project, what architect has not dreamed of a process which would develop in an inexorable fashion from a few rules or a few principles, initially set down, the consequences of which would subsequently link and grow? Such a way of conceiving the development of an architectural project has its roots in the processes by which natural organisms grow, mineral or living, vegetable or animal. In modern, contemporary architecture, there is no lack of organic ...

  1. Book Titled Autonomic Networking-on-Chip: Bio-Inspired Specification, Development, and Verification: An Introduction

    Directory of Open Access Journals (Sweden)

    Phan Cong Vinh

    2015-03-01

    Full Text Available Despite the growing mainstream importance and unique advantages of autonomic networking-onchip (ANoC technology, Autonomic Networking-On-Chip: Bio-Inspired Specification, Development, and Verification is among the first books to evaluate research results on formalizing this emerging NoC paradigm, which was inspired by the human nervous system. The third book in the Embedded Multi-Core Systems series from CRC Press, this is an advanced technical guide and reference composed of contributions from prominent researchers in industry and academia around the world. A response to the critical need for a global information exchange and dialogue, it is written for engineers, scientists, practitioners, and other researchers who have a basic understanding of NoC and are now ready to learn how to specify, develop, and verify ANoC using rigorous approaches.

  2. Developer

    OpenAIRE

    Lakew, Lakachew

    2016-01-01

    As companies grow managing the work becomes harder and harder, thus the ad-vantages of technology come into hand for increasing communication and facili-tating work. This thesis documents the design and development of a web and mobile applica-tion for a service company. The web and mobile applications are built using Laravel and Android Studio respectively. These two applications are designed to communicate with one another so that similar data can be used across these two platforms. ...

  3. Formal and Informal Methods for Multi-Core Design Space Exploration

    Directory of Open Access Journals (Sweden)

    Jean-Francois Kempf

    2014-06-01

    Full Text Available We propose a tool-supported methodology for design-space exploration for embedded systems. It provides means to define high-level models of applications and multi-processor architectures and evaluate the performance of different deployment (mapping, scheduling strategies while taking uncertainty into account. We argue that this extension of the scope of formal verification is important for the viability of the domain.

  4. Regional climate signal modified by local factors - multi core study records (Lake Czechowskie region, N Poland)

    Science.gov (United States)

    Zawiska, Izabela; Rzodkiewicz, Monika; Noryśkiewicz, Agnieszka; Kramkowski, Mateusz; Obremska, Milena; Ott, Florian; Plessen, Birgit; Tjallingii, Rik; Słowiński, Michał; Błaszkiewicz, Mirosław; Brauer, Achim

    2016-04-01

    Lake sediments can be utilized as valuable paleoclimate and environmental archives as they contain information of past changes. Multi-proxy analyses of sedimentary compartments (e.g. pollen, diatoms, Cladocera) reveal those changes. However, to decipher the spatial variability of past climate changes and to define the proxies suited for local and regional scale reconstructions archive comparisons are needed. Here we present a detailed multi-proxy study from four different sediment cores covering the Younger Dryas cold period from the Lake Czechowskie region (N Poland). Three cores are located along a transect in the Lake Czechowskie basin from its deepest point towards a former lake bay close to today's shoreline. The fourth lacustrine sediment core was retrieved from the Trzechowskie paleolake, app. 1 km W from Lake Czechowskie. The dataset comprises information from pollen (AP, NAP, Juniperus, Betula-tree, Pinus silvestris), diatom (planktonic/benthic index, diatom valve concentration, dominant species), Cladocera (planktonic/benthic index, dominant species, number of Cladocera species, total sum of specimens) and geochemical (TOC and CaCO3 content, mineral matter, titanium) analyses. At the beginning of the Younger Dryas the AP pollen share decreased and NAP and Juniperus pollen increased in all studied locations. The mineral matter and titanium record showed higher values in two cores taken from the deepest parts of Lake Czechowskie and the core from Trzechowskie paleolake while in the core located at the marginal part of the lake it was already high in Allerød and it did not change much in Younger Dryas. The Cladocera based indexes: total sum of specimens and number of species decreased at the beginning of YD but on the contrary the Cladocera species composition changes were site-specific. The diatoms valve concentration index significantly lowered in core from the deep location while on the contrary increased in core from paleolake Trzechowskie. Our results showed that pollen analysis is a sensitive proxy to reconstruct regional vegetation changes during the Younger Dryas. The diatoms assemblages were more influenced by local condition than the Cladocera related proxies. The latter revealed a higher sensitivity to climate change during the Younger Dryas. The geochemical analyses indicates the increase of erosion in three cores during the cold period. The core situated close to a hill slope did not reflect major changes as this location is generally more prone to erosive processes. In conclusion, multi-proxy investigations are a crucial necessity for a comprehensive understanding of past changes. The value of archive comparison on a local scale furthermore highlights the potential to detect and consider the opportunity of spatial variable responses of paleoclimate proxies. This research is a contribution to the Virtual Institute of Integrated Climate and Landscape Evolution Analysis (ICLEA) and Polish agency: National Science Centre grant nr. UMO-2011/01/B/ST10/07367.

  5. An embedded health-monitoring infrastructure for a reliable multi-core processor

    NARCIS (Netherlands)

    Kerkhoff, Hans G.; Zhao, Yong

    2013-01-01

    An embedded health-monitoring infrastructure for highly reliable SoCs for datastreaming systems is presented. Different from the traditional testing approach for a dependable design, our infrastructure is based on prognostics from health-monitoring sensors that are embedded in the target processor.

  6. Effect of crosstalk on component savings in multi-core fiber networks

    DEFF Research Database (Denmark)

    Nooruzzaman, Md; Morioka, Toshio

    2017-01-01

    We estimate potential component savings in MCF-based networks by using shortest path traffic routing and compare them with the current SCF-based systems. We also investigate the potential impact of various inter-core crosstalk values on the number of needed transponders in MCF networks....

  7. a Multi-Core Parallel Mosaic Alorithm for Multi-View Uav Images

    Science.gov (United States)

    Pan, X.; Zhao, X.; Gao, D.; Li, X.

    2017-09-01

    As the spread of the error and accumulation often lead to distortion or failure of image mosaic during the multi-view UAV (Unmanned Aerial Vehicle) images stitching. In this paper, to solve the problem we propose a mosaic strategy to construct a mosaic ring and multi-level grouping parallel acceleration as an auxiliary. First, the input images will be divided into several groups, each group in the ring way to stitch. Then, use SIFT for matching, RANSAC to remove the wrong matching points. And then, calculate the perspective transformation matrix. Finally weaken the error by using the adjustment equation. All these steps run between different groups at the same time. By using real UAV images, the experiment results show that this method can effectively reduce the influence of accumulative error, improve the precision of mosaic and reduce the mosaic time by 60 %. The proposed method can be used as one of the effective ways to minimize the accumulative error.

  8. Efficient Support for Matrix Computations on Heterogeneous Multi-core and Multi-GPU Architectures

    Energy Technology Data Exchange (ETDEWEB)

    Dong, Fengguang [Univ. of Tennessee, Knoxville, TN (United States); Tomov, Stanimire [Univ. of Tennessee, Knoxville, TN (United States); Dongarra, Jack [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2011-06-01

    We present a new methodology for utilizing all CPU cores and all GPUs on a heterogeneous multicore and multi-GPU system to support matrix computations e ciently. Our approach is able to achieve the objectives of a high degree of parallelism, minimized synchronization, minimized communication, and load balancing. Our main idea is to treat the heterogeneous system as a distributed-memory machine, and to use a heterogeneous 1-D block cyclic distribution to allocate data to the host system and GPUs to minimize communication. We have designed heterogeneous algorithms with two di erent tile sizes (one for CPU cores and the other for GPUs) to cope with processor heterogeneity. We propose an auto-tuning method to determine the best tile sizes to attain both high performance and load balancing. We have also implemented a new runtime system and applied it to the Cholesky and QR factorizations. Our experiments on a compute node with two Intel Westmere hexa-core CPUs and three Nvidia Fermi GPUs demonstrate good weak scalability, strong scalability, load balance, and e ciency of our approach.

  9. Multi-core computation in chemometrics: case studies of voltammetric and NIR spectrometric analyses

    National Research Council Canada - National Science Library

    Anderson da Silva Soares; Roberto K. H Galvão; Mário César U Araújo; Sófacles F. C Soares; Luiz Alberto Pinto

    2010-01-01

    .... In particular, the present study considers the problem of variable selection employing the successive projections algorithm and the genetic algorithm, as well as the use of cross-validation in partial least squares...

  10. I/O Sharing in a Multi-core Kernel for Mixed-criticality Applications

    DEFF Research Database (Denmark)

    Li, Gang; Top, Søren

    2013-01-01

    In a mixed-criticality system, applications with different safety criticality levels are usually required to be implemented upon one platform for several reasons( reducing hardware cost, space, power consumption). Partitioning technology is used to enable the integration of mixed-criticality appl......, a certifiable I/O sharing approach is implemented based on a safe message mechanism, in order to support the partitioning architecture, enable individual certification of mixed-criticality applications and thus achieve minimized total certification cost of the entire system.......In a mixed-criticality system, applications with different safety criticality levels are usually required to be implemented upon one platform for several reasons( reducing hardware cost, space, power consumption). Partitioning technology is used to enable the integration of mixed......-criticality applications with reduced certification cost. In the partitioning architecture of strong spatial and temporal isolation, fault propagation can be prevented among mixed-criticality applications (regarded as partitions). However, I/O sharing between partitions could be the path of fault propagation that hinders...

  11. Exploration and Evaluation of Nanometer Low-power Multi-core VLSI Computer Architectures

    Science.gov (United States)

    2015-03-01

    Steven Helmer, Andrea Lapiana, Giuseppe Lapiana, Rich Linderman, Tom Renz, John Rooks, Ross Thompson, Lisa Weyna, and Qing Wu. iii 1...a script-based language that most EDA-vendors support called Tool Command Language (Tcl). John Ousterhout invented Tcl while he was a faculty...Integrated Circuit Technology, 2006. ICSICT 󈧊. 8th International Conference on, 2006, pp. 1610-1613. [11] R. Chau, J. Brask, S. Datta, G. Dewey , M

  12. Glasswing : Accelerating MapReduce on multi-core and many-core clusters

    NARCIS (Netherlands)

    Elhelw, Ismail; Hofman, R.F.H.; Bal, H.E.

    2014-01-01

    The impact and significance of parallel computing techniques is continuously increasing given the current trend of incorporating more cores in new processor designs. However, many Big Data systems fail to exploit the abundant computational power of multicore CPUs and GPUs to their full potential. We

  13. Design of homogeneous trench-assisted multi-core fibers based on analytical model

    DEFF Research Database (Denmark)

    Ye, Feihong; Tu, Jiajing; Saitoh, Kunimasa

    2016-01-01

    We present a design method of homogeneous trench-assisted multicore fibers (TA-MCFs) based on an analytical model utilizing an analytical expression for the mode coupling coefficient between two adjacent cores. The analytical model can also be used for crosstalk (XT) properties analysis, such as ...

  14. Optical diversity transmission using WDM signal and phase-conjugate lights through multi-core fiber.

    Science.gov (United States)

    Koga, Masafumi; Moroi, Mitsuki; Takara, Hidehiko

    2016-05-02

    This paper proposes a maximum-ratio combining (MRC) scheme for a WDM signal and phase-conjugate pair (PCP) diversity transmission to cancel nonlinear phase-shift. A transfer function approximation for nonlinear phase-shift cancellation is formulated. It shows, with the help of a numerical calculation, that span-by-span chromatic dispersion compensation is more effective than the lumped equivalent at the receiver. This is confirmed in a 2-core diversity 5 channel WDM transmission experiment over 3-spans of 60km MCF with 25 Gbit/s-QPSK PCP. The peak Q-value was enhanced by 3.6dB through MRC, resulting in superior bitrate-distance product and optical power density limit, compared to twice the single core transmission.

  15. SpaceCubeX: A Framework for Evaluating Hybrid Multi-Core CPU FPGA DSP Architectures

    Science.gov (United States)

    Schmidt, Andrew G.; Weisz, Gabriel; French, Matthew; Flatley, Thomas; Villalpando, Carlos Y.

    2017-01-01

    The SpaceCubeX project is motivated by the need for high performance, modular, and scalable on-board processing to help scientists answer critical 21st century questions about global climate change, air quality, ocean health, and ecosystem dynamics, while adding new capabilities such as low-latency data products for extreme event warnings. These goals translate into on-board processing throughput requirements that are on the order of 100-1,000 more than those of previous Earth Science missions for standard processing, compression, storage, and downlink operations. To study possible future architectures to achieve these performance requirements, the SpaceCubeX project provides an evolvable testbed and framework that enables a focused design space exploration of candidate hybrid CPU/FPGA/DSP processing architectures. The framework includes ArchGen, an architecture generator tool populated with candidate architecture components, performance models, and IP cores, that allows an end user to specify the type, number, and connectivity of a hybrid architecture. The framework requires minimal extensions to integrate new processors, such as the anticipated High Performance Spaceflight Computer (HPSC), reducing time to initiate benchmarking by months. To evaluate the framework, we leverage a wide suite of high performance embedded computing benchmarks and Earth science scenarios to ensure robust architecture characterization. We report on our projects Year 1 efforts and demonstrate the capabilities across four simulation testbed models, a baseline SpaceCube 2.0 system, a dual ARM A9 processor system, a hybrid quad ARM A53 and FPGA system, and a hybrid quad ARM A53 and DSP system.

  16. Robust motion estimation on a low-power multi-core DSP

    OpenAIRE

    Igual F.D.; Botella G.; Garcia C.; Prieto M.; Tirado F

    2013-01-01

    Medical imaging has become an absolutely essential diagnostic tool for clinical practices; at present, pathologies can be detected with an earliness never before known. Its use has not only been relegated to the field of radiology but also, increasingly, to computer-based imaging processes prior to surgery. Motion analysis, in particular, plays an important role in analyzing activities or behaviors of live objects in medicine. This short paper presents several low-cost hardware implementation...

  17. Real-time Vision using FPGAs, GPUs and Multi-core CPUs

    DEFF Research Database (Denmark)

    Kjær-Nielsen, Anders

    on the Hook" where the "Vision Frontend" is used to enable the placing of rings onto moving hooks using a robot arm, and finally an institute research called RoBlood where large filtering kernels are implemented on an FPGA to achieve an embedded and small end product that consumes little power. The "Vision......Computer Vision has gone through a significant evolution in the last decade, whilst finding its way into more and more application domains, with robotics, video surveillance and automation being the most dominant. This trend is due to extensive basic research in the field of vision, however...... been utilized to find the pose of pieces of meat for automatic handling. Another example is a second European project called PACO-PLUS, where the ECV system is used in an attempt to design a cognitive robot using visual input....

  18. T-Crest: A Time-Predictable Multi-Core Platform For Aerospace Applications

    DEFF Research Database (Denmark)

    Schoeberl, Martin; Silva, Claudio; Rocha, Andre

    2014-01-01

    Space systems are hard real-time systems, where the worst-case execution time (WCET) of tasks needs to be known to prove absence of deadline misses. For simple processor and memory architectures it is possible to statically derive a safe upper bound of the WCET. However, future requirements in mo...

  19. Investigation of Large Scale Cortical Models on Clustered Multi-Core Processors

    Science.gov (United States)

    2013-02-01

    of several applications of neural models were examined, including face recognition, maze traversal, and robotic motion calibration. Radial Basis...inference capabilities including speech recognition, computer vision, textual and image content recognition, robotic control, and making sense of massive...Function Neural Networks (RBFNN) were utilized for the robot motion calibration [24]. Several high performance multicore computing hardware were also

  20. Multi-block/multi-core SSOR preconditioner for the QCD quark solver for K computer

    CERN Document Server

    Boku, T; Kuramashi, Y; Minami, K; Nakamura, Y; Shoji, F; Takahashi, D; Terai, M; Ukawa, A; Yoshie, T

    2012-01-01

    We study the algorithmic optimization and performance tuning of the Lattice QCD clover-fermion solver for the K computer. We implement the L\\"uscher's SAP preconditioner with sub-blocking in which the lattice block in a node is further divided to several sub-blocks to extract enough parallelism for the 8-core CPU SPARC64$^{\\mathrm{TM}}$ VIIIfx of the K computer. To achieve a better convergence property we use the symmetric successive over-relaxation (SSOR) iteration with {\\it locally-lexicographical} ordering for the sub-blocks in obtaining the block inverse. The SAP preconditioner is included in the single precision BiCGStab solver of the nested BiCGStab solver. The single precision part of the computational kernel are solely written with the SIMD oriented intrinsics to achieve the best performance of the \\SPARC on the K computer. We benchmark the single precision BiCGStab solver on the three lattice sizes: $12^3\\times 24$, $24^3\\times 48$ and $48^3\\times 96$, with fixing the local lattice size in a node at ...

  1. Photonic-Networks-on-Chip for High Performance Radiation Survivable Multi-Core Processor Systems

    Science.gov (United States)

    2013-12-01

    InGaAs quantum well active regions on GaAs, InAs quantum dots-in-a- well (DWELL) structures where InAs dots are embedded in InGaAs ...and Malloy, K. J., "Characterization of InAs quantum dots in strained InxGa1-xAs quantum wells ," Journal of Vacuum Science & Technology B 18(3), 1496... quantum wells , and InAs quantum dashes grown on InP substrate and embedded in quartenary AlGaInAs quantum wells as well as

  2. High-Capacity Multi-Core Fibers for Space-Division Multiplexing

    DEFF Research Database (Denmark)

    Ye, Feihong

    -of-the-art high-capacity transmission experiments beyond Pbit/s. In order to increase the transmission capacity of MCFs, the total number of cores needs to be increased while keeping the inter-core crosstalk (XT) among neighboring cores low as it degrades the optical signal-to-noise ratio (OSNR) of data signals...... parameters on XT performance in designing high-count, low-XT TA-MCFs, an analytical model for XT estimation and XT properties analysis in TA-MCFs has been greatly needed. In this thesis, a novel analytical model for designing low-XT and high-count homogeneous TAMCFs is described where all the cores have...... the XT of FI/FO devices may limit the performance of MCF transmission systems and hence it is of importance to characterize their XT properties. The new method has great advantages that the MCF-SMF coupling is not needed and the measurements results are immune to the cleaving angle of MCFs. Measurements...

  3. Multi-core job submission and grid resource scheduling for ATLAS AthenaMP

    CERN Multimedia

    CERN. Geneva

    2012-01-01

    A study into the effectiveness and scalability of AthenaMP in a production environment will be presented. Submitting AthenaMP tasks to the Tier-0 and candidate Tier-2 sites will allow detailed measurement of worker node performance and also highlight the relative performance of local resource management system...

  4. Domain Expert-Directed Program Optimizations for Accelerated Performance on Heterogeneous Multi-core Processors

    Science.gov (United States)

    2013-12-01

    Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law , no person shall be...Armin Biere (Johannes Kepler University, Austria), Nikolaj Bjorner (Microsoft Research), Alessandro Cimatti (Bruno Kessler Foundation, Italy), and Chung

  5. Solving Matrix Equations on Multi-Core and Many-Core Architectures

    Directory of Open Access Journals (Sweden)

    Peter Benner

    2013-11-01

    Full Text Available We address the numerical solution of Lyapunov, algebraic and differential Riccati equations, via the matrix sign function, on platforms equipped with general-purpose multicore processors and, optionally, one or more graphics processing units (GPUs. In particular, we review the solvers for these equations, as well as the underlying methods, analyze their concurrency and scalability and provide details on their parallel implementation. Our experimental results show that this class of hardware provides sufficient computational power to tackle large-scale problems, which only a few years ago would have required a cluster of computers.

  6. Cyber-Physical Multi-Core Optimization for Resource and Cache Effects (C2ORES)

    Science.gov (United States)

    2014-03-01

    decisions made in software (e.g. how to move a plane’s ailerons ) have a direct impact on the physical world (e.g., whether or not the plane crashes...open- ended assumption of arbitrary routing heterogeneity may be too general to be practical. Modern computer systems are often connected in a 2D plane

  7. A heterogeneous multi-core platform for low power signal processing in systems-on-chip

    DEFF Research Database (Denmark)

    Paker, Ozgun; Sparsø, Jens; Haandbæk, Niels

    2002-01-01

    This paper presents a low-power and programmable DSP architecture - a heterogeneous multiprocessor platform consisting of standard CPU/DSP cores, and a set of simple instruction set processors called mini-cores each optimized for a particular class of algorithm (FIR, IIR, LMS, etc.). Communication...... than 6-21 times lower than a general purpose CPU/DSP corewhile executing non-trivial industrial applications....

  8. An Efficient Parallel SAT Solver Exploiting Multi-Core Environments Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The hundreds of stream cores in the latest graphics processors (GPUs), and the possibility to execute non-graphics computations on them, open unprecedented levels of...

  9. Synthetic Aperture Radar Data Processing on an FPGA Multi-Core System

    DEFF Research Database (Denmark)

    Schleuniger, Pascal; Kusk, Anders; Dall, Jørgen

    2013-01-01

    Synthetic aperture radar, SAR, is a high resolution imaging radar. The direct back-projection algorithm allows for a precise SAR output image reconstruction and can compensate for deviations in the flight track of airborne radars. Often graphic processing units, GPUs are used for data processing...... that the system provides real-time processing of a SAR application that maps a 3000m wide area with a resolution of 2x2 meters....

  10. A MULTI-CORE PARALLEL MOSAIC ALORITHM FOR MULTI-VIEW UAV IMAGES

    Directory of Open Access Journals (Sweden)

    X. Pan

    2017-09-01

    Full Text Available As the spread of the error and accumulation often lead to distortion or failure of image mosaic during the multi-view UAV (Unmanned Aerial Vehicle images stitching. In this paper, to solve the problem we propose a mosaic strategy to construct a mosaic ring and multi-level grouping parallel acceleration as an auxiliary. First, the input images will be divided into several groups, each group in the ring way to stitch. Then, use SIFT for matching, RANSAC to remove the wrong matching points. And then, calculate the perspective transformation matrix. Finally weaken the error by using the adjustment equation. All these steps run between different groups at the same time. By using real UAV images, the experiment results show that this method can effectively reduce the influence of accumulative error, improve the precision of mosaic and reduce the mosaic time by 60 %. The proposed method can be used as one of the effective ways to minimize the accumulative error.

  11. Femtosecond laser processing of optical fibres for novel sensor development

    Science.gov (United States)

    Kalli, Kyriacos; Theodosiou, Antreas; Ioannou, Andreas; Lacraz, Amedee

    2017-04-01

    We present results of recent research where we have utilized a femtosecond laser to micro-structure silica and polymer optical fibres in order to realize versatile optical components such as diffractive optical elements on the fibre end face, the inscription of integrated waveguide circuits in the fibre cladding and novel optical fibre sensors designs based on Bragg gratings in the core. A major hurdle in tailoring or modifying the properties of optical fibres is the development of an inscription method that can prove to be a flexible and reliable process that is generally applicable to all optical fibre types; this requires careful matching of the laser parameters and optics in order to examine the spatial limits of direct laser writing, whether the application is structuring at the surface of the optical fibre or inscription in the core and cladding of the fibre. We demonstrate a variety of optical components such as two-dimensional grating structures, Bessel, Airy and vortex beam generators; moreover, optical bridging waveguides inscribed in the cladding of single-mode fibre as a means to selectively couple light from single-core to multi-core optical fibres, and demonstrate a grating based sensor; finally, we have developed a novel femtosecond laser inscription method for the precise inscription of tailored Bragg grating sensors in silica and polymer optical fibres. We also show that this novel fibre Bragg grating inscription technique can be used to modify and add versatility to an existing, encapsulated optical fibre pressure sensor.

  12. Grid and Cloud for Developing Countries

    Science.gov (United States)

    Petitdidier, Monique

    2014-05-01

    The European Grid e-infrastructure has shown the capacity to connect geographically distributed heterogeneous compute resources in a secure way taking advantages of a robust and fast REN (Research and Education Network). In many countries like in Africa the first step has been to implement a REN and regional organizations like Ubuntunet, WACREN or ASREN to coordinate the development, improvement of the network and its interconnection. The Internet connections are still exploding in those countries. The second step has been to fill up compute needs of the scientists. Even if many of them have their own multi-core or not laptops for more and more applications it is not enough because they have to face intensive computing due to the large amount of data to be processed and/or complex codes. So far one solution has been to go abroad in Europe or in America to run large applications or not to participate to international communities. The Grid is very attractive to connect geographically-distributed heterogeneous resources, aggregate new ones and create new sites on the REN with a secure access. All the users have the same servicers even if they have no resources in their institute. With faster and more robust internet they will be able to take advantage of the European Grid. There are different initiatives to provide resources and training like UNESCO/HP Brain Gain initiative, EUMEDGrid, ..Nowadays Cloud becomes very attractive and they start to be developed in some countries. In this talk challenges for those countries to implement such e-infrastructures, to develop in parallel scientific and technical research and education in the new technologies will be presented illustrated by examples.

  13. Managing the CMS Online Software integrity through development and production cycles

    CERN Multimedia

    CERN. Geneva

    2015-01-01

    The Data Acquisition system of the Compact Muon Solenoid experiment at CERN is a distributed system made of several different network technologies and computers to collect data from more than 600 custom detector Front-End Drivers. It assembles events at a rate of 100 kHz, transporting event data at an aggregate throughput of 100 GByte/s. The architecture takes advantage of the latest developments in the computing industry. For data concentration, 10/40 Gbit Ethernet technologies are used while a 56Gbps Infiniband FDR CLOS network has been chosen for the event builder with a throughput of ~4 Tbps. The CMS Online Software (CMSOS) infrastructure is a complex product created specifically for the development of large distributed data acquisition systems as well as all application components to achieve the CMS data acquisition task. It is designed to benefit from different networking technologies, parallelism available on a processing platform such as multi-core or multi-processor systems. It provides platform i...

  14. An adaptive multi-spline refinement algorithm in simulation based sailboat trajectory optimization using onboard multi-core computer systems

    Directory of Open Access Journals (Sweden)

    Dębski Roman

    2016-06-01

    Full Text Available A new dynamic programming based parallel algorithm adapted to on-board heterogeneous computers for simulation based trajectory optimization is studied in the context of “high-performance sailing”. The algorithm uses a new discrete space of continuously differentiable functions called the multi-splines as its search space representation. A basic version of the algorithm is presented in detail (pseudo-code, time and space complexity, search space auto-adaptation properties. Possible extensions of the basic algorithm are also described. The presented experimental results show that contemporary heterogeneous on-board computers can be effectively used for solving simulation based trajectory optimization problems. These computers can be considered micro high performance computing (HPC platforms-they offer high performance while remaining energy and cost efficient. The simulation based approach can potentially give highly accurate results since the mathematical model that the simulator is built upon may be as complex as required. The approach described is applicable to many trajectory optimization problems due to its black-box represented performance measure and use of OpenCL.

  15. Evaluation of scheduling heuristics for jitter reduction of real-time streaming applications on multi-core general purpose hardware

    NARCIS (Netherlands)

    Westmijze, M.; Bekooij, Marco Jan Gerrit; Smit, Gerardus Johannes Maria; Schrijver, M.; Schrijver, M.

    2011-01-01

    The real-time system research community has paid a lot of attention to the design of safety critical hard real-time systems for which the use of non-standard hardware and operating systems can be justi﬿ed. However, stream processing applications like medical imaging systems are often not considered

  16. Hybrid MPI/OpenMP parallelization of the explicit Volterra integral equation solver for multi-core computer architectures

    KAUST Repository

    Al Jarro, Ahmed

    2011-08-01

    A hybrid MPI/OpenMP scheme for efficiently parallelizing the explicit marching-on-in-time (MOT)-based solution of the time-domain volume (Volterra) integral equation (TD-VIE) is presented. The proposed scheme equally distributes tested field values and operations pertinent to the computation of tested fields among the nodes using the MPI standard; while the source field values are stored in all nodes. Within each node, OpenMP standard is used to further accelerate the computation of the tested fields. Numerical results demonstrate that the proposed parallelization scheme scales well for problems involving three million or more spatial discretization elements. © 2011 IEEE.

  17. Analyzing the trade-off between multiple memory controllers and memory channels on multi-core processor performance

    Energy Technology Data Exchange (ETDEWEB)

    Sancho Pitarch, Jose Carlos [Los Alamos National Laboratory; Kerbyson, Darren [Los Alamos National Laboratory; Lang, Mike [Los Alamos National Laboratory

    2010-01-01

    Increasing the core-count on current and future processors is posing critical challenges to the memory subsystem to efficiently handle concurrent memory requests. The current trend to cope with this challenge is to increase the number of memory channels available to the processor's memory controller. In this paper we investigate the effectiveness of this approach on the performance of parallel scientific applications. Specifically, we explore the trade-off between employing multiple memory channels per memory controller and the use of multiple memory controllers. Experiments conducted on two current state-of-the-art multicore processors, a 6-core AMD Istanbul and a 4-core Intel Nehalem-EP, for a wide range of production applications shows that there is a diminishing return when increasing the number of memory channels per memory controller. In addition, we show that this performance degradation can be efficiently addressed by increasing the ratio of memory controllers to channels while keeping the number of memory channels constant. Significant performance improvements can be achieved in this scheme, up to 28%, in the case of using two memory controllers with each with one channel compared with one controller with two memory channels.

  18. A Formal Approach to the Provably Correct Synthesis of Mission Critical Embedded Software for Multi Core Embedded Platforms

    Science.gov (United States)

    2014-04-01

    control problem. Computers & Chemical Engineering , 17(3):245–255, Mar. 1993. [58] B. Jose, J. Pribble, L. Stewart, and S. Shukla. Emcodesyn: A visual...TERMS Software Engineering , Software Producibility, Component-based software design, behavioral types, behavioral type inference, Polychronous model...real-time workshop’ that can generate C/C++ code from Simulink /MatLab specifications. However, since Simulink /Matlab does not have a published

  19. Automated and Assistive Tools for Accelerated Code migration of Scientific Computing on to Heterogeneous MultiCore Systems

    Science.gov (United States)

    2017-04-13

    modelling code, a parallel benchmark, and a communication avoiding version of the QR algorithm. Further, several improvements to the OmpSs model were...communication avoiding version of the QR algorithm. Further, several improvements to the OmpSs model were accomplished, including: proper support

  20. Analysis of Few-Mode Multi-Core Fiber Splice Behavior Using an Optical Vector Network Analyzer

    DEFF Research Database (Denmark)

    Rommel, Simon; Mendinueta, Jose Manuel Delgado; Klaus, Werner

    2017-01-01

    The behavior of splices in a 3-mode 36-core fiber is analyzed using optical vector network analysis. Time-domain response analysis confirms splices may cause significant mode-mixing, while frequency-domain analysis shows splices may affect system level mode-dependent loss both positively...

  1. Co Modeling and Co Synthesis of Safety Critical Multi threaded Embedded Software for Multi Core Embedded Platforms

    Science.gov (United States)

    2017-03-20

    driven software design, high- assurance software 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT 18. NUMBER OF PAGES 19a. NAME OF...Pierre Talpin Inst National Recherche Inform Autom Final Report 03/20/2017 DISTRIBUTION A: Distribution approved for public release. AF Office Of... information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing   data sources, gathering and

  2. Ultrahigh Capacity Optical Communications Beyond Pb/s

    DEFF Research Database (Denmark)

    Morioka, Toshio

    2013-01-01

    Recent progress in ultrahigh capacity optical communication technologies based on space-division multiplexing is described including one Pb/s transmission in a newly developed multi-core fiber with future perspectives for more capacity.......Recent progress in ultrahigh capacity optical communication technologies based on space-division multiplexing is described including one Pb/s transmission in a newly developed multi-core fiber with future perspectives for more capacity....

  3. The Multi-Core Problem: Data management software isn't built for modern processors and can't leverage the technology it needs

    National Research Council Canada - National Science Library

    Anonymous

    2010-01-01

    ... [Apama, StreamBase, etc.] are also aware of this. At this point in time, you've got various pools of parallel work but you don't have parallel architecture, and I don't think that's going to arrive within 18 months...

  4. Experimental demonstration of high spectral efficient 4 × 4 MIMO SCMA-OFDM/OQAM radio over multi-core fiber system.

    Science.gov (United States)

    Liu, Chang; Deng, Lei; He, Jiale; Li, Di; Fu, Songnian; Tang, Ming; Cheng, Mengfan; Liu, Deming

    2017-07-24

    In this paper, 4 × 4 multiple-input multiple-output (MIMO) radio over 7-core fiber system based on sparse code multiple access (SCMA) and OFDM/OQAM techniques is proposed. No cyclic prefix (CP) is required by properly designing the prototype filters in OFDM/OQAM modulator, and non-orthogonally overlaid codewords by using SCMA is help to serve more users simultaneously under the condition of using equal number of time and frequency resources compared with OFDMA, resulting in the increase of spectral efficiency (SE) and system capacity. In our experiment, 11.04 Gb/s 4 × 4 MIMO SCMA-OFDM/OQAM signal is successfully transmitted over 20 km 7-core fiber and 0.4 m air distance in both uplink and downlink. As a comparison, 6.681 Gb/s traditional MIMO-OFDM signal with the same occupied bandwidth has been evaluated for both uplink and downlink transmission. The experimental results show that SE could be increased by 65.2% with no bit error rate (BER) performance degradation compared with the traditional MIMO-OFDM technique.

  5. Adolescent development

    Science.gov (United States)

    Development - adolescent; Growth and development - adolescent ... During adolescence, children develop the ability to: Understand abstract ideas. These include grasping higher math concepts, and developing moral ...

  6. New developments on the cheminformatics open workflow environment CDK-Taverna.

    Science.gov (United States)

    Truszkowski, Andreas; Jayaseelan, Kalai Vanii; Neumann, Stefan; Willighagen, Egon L; Zielesny, Achim; Steinbeck, Christoph

    2011-12-13

    The computational processing and analysis of small molecules is at heart of cheminformatics and structural bioinformatics and their application in e.g. metabolomics or drug discovery. Pipelining or workflow tools allow for the Lego™-like, graphical assembly of I/O modules and algorithms into a complex workflow which can be easily deployed, modified and tested without the hassle of implementing it into a monolithic application. The CDK-Taverna project aims at building a free open-source cheminformatics pipelining solution through combination of different open-source projects such as Taverna, the Chemistry Development Kit (CDK) or the Waikato Environment for Knowledge Analysis (WEKA). A first integrated version 1.0 of CDK-Taverna was recently released to the public. The CDK-Taverna project was migrated to the most up-to-date versions of its foundational software libraries with a complete re-engineering of its worker's architecture (version 2.0). 64-bit computing and multi-core usage by paralleled threads are now supported to allow for fast in-memory processing and analysis of large sets of molecules. Earlier deficiencies like workarounds for iterative data reading are removed. The combinatorial chemistry related reaction enumeration features are considerably enhanced. Additional functionality for calculating a natural product likeness score for small molecules is implemented to identify possible drug candidates. Finally the data analysis capabilities are extended with new workers that provide access to the open-source WEKA library for clustering and machine learning as well as training and test set partitioning. The new features are outlined with usage scenarios. CDK-Taverna 2.0 as an open-source cheminformatics workflow solution matured to become a freely available and increasingly powerful tool for the biosciences. The combination of the new CDK-Taverna worker family with the already available workflows developed by a lively Taverna community and published on

  7. New developments on the cheminformatics open workflow environment CDK-Taverna

    Directory of Open Access Journals (Sweden)

    Truszkowski Andreas

    2011-12-01

    Full Text Available Abstract Background The computational processing and analysis of small molecules is at heart of cheminformatics and structural bioinformatics and their application in e.g. metabolomics or drug discovery. Pipelining or workflow tools allow for the Lego™-like, graphical assembly of I/O modules and algorithms into a complex workflow which can be easily deployed, modified and tested without the hassle of implementing it into a monolithic application. The CDK-Taverna project aims at building a free open-source cheminformatics pipelining solution through combination of different open-source projects such as Taverna, the Chemistry Development Kit (CDK or the Waikato Environment for Knowledge Analysis (WEKA. A first integrated version 1.0 of CDK-Taverna was recently released to the public. Results The CDK-Taverna project was migrated to the most up-to-date versions of its foundational software libraries with a complete re-engineering of its worker's architecture (version 2.0. 64-bit computing and multi-core usage by paralleled threads are now supported to allow for fast in-memory processing and analysis of large sets of molecules. Earlier deficiencies like workarounds for iterative data reading are removed. The combinatorial chemistry related reaction enumeration features are considerably enhanced. Additional functionality for calculating a natural product likeness score for small molecules is implemented to identify possible drug candidates. Finally the data analysis capabilities are extended with new workers that provide access to the open-source WEKA library for clustering and machine learning as well as training and test set partitioning. The new features are outlined with usage scenarios. Conclusions CDK-Taverna 2.0 as an open-source cheminformatics workflow solution matured to become a freely available and increasingly powerful tool for the biosciences. The combination of the new CDK-Taverna worker family with the already available workflows

  8. r.avaflow, the GIS simulation model for avalanche and debris flows: new developments and challenges

    Science.gov (United States)

    Mergili, Martin; Queiroz de Oliveira, Gustavo; Fischer, Jan-Thomas; Krenn, Julia; Kulisch, Helmut; Malcherek, Andreas; Pudasaini, Shiva P.

    2016-04-01

    We present the latest developments and discuss some of the key challenges with regard to the novel and unified computational tool r.avaflow, representing an advanced, comprehensive, GIS-based open source simulation environment for two-phase geophysical mass flows such as avalanches of snow or rock, flows of debris or mud, and related process chains. r.avaflow is freely available and adoptable as a raster module of the GRASS GIS software (http://www.avaflow.org). We focus on the following issues: (1) We back-calculate a laboratory-scale debris flow experiment with r.avaflow and thereby show that different types of drag may govern the evolving flow dynamics, depending on the initial flow configuratiuon. In particular, it appears necessary to consider viscous ambient drag in order to achieve simulation results in line with experimentally measurements. (2) We employ a set of well-documented rock avalanche events to illustrate the use of a built-in functionality for parameter sensitivity analysis and optimization. To do so, we demonstrate possible strategies going beyond the deficient one-at-a-time simulation approach. They allow us to test three or more parameters at once with a limited number of model runs. Computational times are kept at an acceptable level by multi-core processing strategies and use of the Vienna Scientific Cluster. We further discuss a number of key issues with regard to (i) arbitrary mountain topography; and (ii) entrainment and deposition of material. Most tests indicate a good model performance when the affected areas predicted for a late stage of the flow simulation are compared with observed affected areas. However, we note that such a validation is not fully justified without the implementation of a physically correct model for the deposition process. Acknowledgement: The work was conducted as part of the international cooperation project "A GIS simulation model for avalanche and debris flows (avaflow)" supported by the Austrian Science Fund

  9. Features of development and analysis of the simulation model of a multiprocessor computer system

    Directory of Open Access Journals (Sweden)

    O. M. Brekhov

    2017-01-01

    Full Text Available Over the past decade, multiprocessor systems have been applied in computer technology. At present,multi-core processors are equipped not only with supercomputers, but also with the vast majority of mobile devices. This creates the need for students to learn the basic principles of their construction and functioning.One of the possible methods for analyzing the operation of multiprocessor systems is simulation modeling.Its use contributes to a better understanding of the effect of workload and structure parameters on performance. The article considers the features of the development of the simulation model for estimating the time characteristics of a multiprocessor computer system, as well as the use of the regenerative method of model analysis. The characteristics of the software implementation of the inverse kinematics solution of the robot are adopted as a workload. The given task consists in definition of turns in joints of the manipulator on known angular and linear position of its grasp. An analytical algorithm for solving the problem was chosen, namely, the method of simple kinematic relations. The work of the program is characterized by the presence of parallel calculations, during which resource conflicts arise between the processor cores, involved in simultaneous access to the memory via a common bus. In connection with the high information connectivity between parallel running programs, it is assumed that all processing cores use shared memory. The simulation model takes into account probabilistic memory accesses and tracks emerging queues to shared resources. The collected statistics reveal the productive and overhead time costs for the program implementation for each processor core involved. The simulation results show the unevenness of kernel utilization, downtime in queues to shared resources and temporary losses while waiting for other cores due to information dependencies. The results of the simulation are estimated by the

  10. Consumerism & Development.

    Science.gov (United States)

    Ockenden, Sandy

    1991-01-01

    This material asks social studies students in Canada to recognize the implications of the lifestyles of citizens in developed countries, and the power that consumers have to create change for a better world, to be agents of positive development. Development is seen as a four faceted process. This model implies that development is an approach to…

  11. Human Development

    NARCIS (Netherlands)

    D.R. Gasper (Des)

    2009-01-01

    textabstract‘Human development’ language spread gradually in circles of national and international development policy and planning from the 1970s and acquired a definitive form in the 1990s in the United Nations Development Programme’s Human Development Reports (HDRs). Human development was defined

  12. Multimobile Development

    CERN Document Server

    Baxter-Reynolds, Matthew

    2010-01-01

    You've developed a killer app for one mobile device - now it's time to maximize your intellectual investment and develop for the full spectrum of mobile platforms and devices. With Multimobile Development, you'll learn how to quickly retool between the iPhone and Android platforms and broaden the interest and audience of your app, without working with burdensome and error-prone compatibility layers and toolkits. Multimobile Development takes you, the developer, through the same mobile software development project on both platforms, learning the differences between and the relative strengths an

  13. Speech Development

    Science.gov (United States)

    ... Spotlight Fundraising Ideas Vehicle Donation Volunteer Efforts Speech Development skip to submenu What We Do Cleft & Craniofacial Educational Materials Speech Development To download the PDF version of this factsheet, ...

  14. Child Development

    Science.gov (United States)

    ... grow older, they develop in several different ways. Child development includes physical, intellectual, social, and emotional changes. ... same sex. Peer approval becomes very important. Your child may try new behaviors to be part of " ...

  15. Toddler Development

    Science.gov (United States)

    ... developmental milestones. It is exciting to watch your toddler learn new skills. The normal development of children ... playing with others, taking turns, doing fantasy play Toddlers do not develop at the same rate. There ...

  16. Developer Network

    Energy Technology Data Exchange (ETDEWEB)

    2012-08-21

    NREL's Developer Network, developer.nrel.gov, provides data that users can access to provide data to their own analyses, mobile and web applications. Developers can retrieve the data through a Web services API (application programming interface). The Developer Network handles overhead of serving up web services such as key management, authentication, analytics, reporting, documentation standards, and throttling in a common architecture, while allowing web services and APIs to be maintained and managed independently.

  17. Faculty Development.

    Science.gov (United States)

    Gillan, Bob, Ed.; McFerrin, Karen, Ed.

    This document contains the following papers on faculty development and technology: "Involving Faculty in Faculty Development" (Kristine Blair and Dan Madigan); "Technology Use in Higher Education: A Faculty Development Model" (Jessica Kahn); "A Faculty of Education as a Community of Learners: Growing to Meet the Demands of…

  18. Developing Collaborative Product Development Capabilities

    DEFF Research Database (Denmark)

    Mahnke, Volker; Tran, Yen

    2012-01-01

    innovation strategies’. Our analyses suggest that developing such collaboration capabilities benefits from the search for complementary practices, the combination of learning styles, and the development of weak and strong ties. Results also underscore the crucial importance of co-evolution of multi......-level, simultaneous learning processes and highlight the role of human agency in capability development with partners. Building on our analyses, we advance propositions for future research and managerial practices on developing dynamic collaboration capabilities....

  19. Product Development

    Science.gov (United States)

    McKim, Brian

    Product development is a vital piece of any industry, especially the food industry. It drives innovation, advances technology, and encourages growth. With the increasing concern for the safety of the food supply, product development has become an important step in the overall business process to provide consumers with food they feel safe eating. As a result, the product development profession has become an increasingly important and rewarding line of work.

  20. Indigenising development

    OpenAIRE

    Ramos, Alcida Rita; Osorio, Rafael Guerreiro; Pimenta, José

    2009-01-01

    Among the many social groups that have been historically excluded, indigenous people comprise one that offers great challenges to development. Although their assimilation has been a goal of the national societies that engulfed them, it is disputable whether indigenous people desire the type of social inclusion that development, in its many forms, can produce. At the same time, development seems irreversible, and resistance to it might have consequences far more adverse than those brought by a...

  1. KENO developments

    Energy Technology Data Exchange (ETDEWEB)

    Hollenbach, D.F.; Landers, N.F.; Petrie, L.M. [Oak Ridge National Lab., TN (United States)

    1997-06-01

    Modifications and developments to the series of KENO multigroup, criticality safety transport codes are very briefly summarized. Three areas are addressed: (1) modifications to KENO-V.a, (2) development of KENO-VI, (3) modifications to the CSAS4 sequence of the SCALE package, and (4) future work on KENO related programs. Minor changes have been made to KENO-V.a, primarily for maintenance. KENO-VI has been developed and will be released soon. A new search type is being developed in SCALE to allow CSAS4 to do a concentration search on a mixture component.

  2. Child Development

    Science.gov (United States)

    ... DEVELOPMENTAL MILESTONES Children reach milestones in how they play, learn, speak, behave, and move (for example, crawling ... Basics Early Brain Development Developmental Screening Screening for ...

  3. Adolescent development.

    Science.gov (United States)

    Blakeney, A B

    1985-01-01

    Adolescence is a period of development considered by most to be transitory. It is often viewed as filled with storm, rebellion, and conflict. Although the profession of occupational therapy has developed special practice areas and generated research in the areas of pediatrics and gerontology, little focus in our literature has been placed on adolescents and their special needs in development and treatment. This paper presents an overview of normal development in adolescence. The model of human occupation is used as structure to organize research from other fields to provide therapists with useful guidelines for treatment.

  4. Management Development.

    Science.gov (United States)

    1997

    This document contains three papers from a symposium on management development. "LMX (Leader-Member Exchange) Theory, Personality Type, and Management Development" (Janet Z. Burns) reports the results of a study on the similarities and differences in personality type (as outlined in the theories of Carl Jung and Isabel Myers) and its relationship…

  5. Securing Development

    DEFF Research Database (Denmark)

    Friis, Søren

    Working paper presented at ECPR General Conference 2015, Montréal. Panel: “The Concept of Development in Global Politics 1” (P315), 29 August 2015.......Working paper presented at ECPR General Conference 2015, Montréal. Panel: “The Concept of Development in Global Politics 1” (P315), 29 August 2015....

  6. Africa Development

    African Journals Online (AJOL)

    Africa Development is the quarterly bilingual journal of CODESRIA. It is a social science journal whose major focus is on issues which are central to the development of society. Its principal objective is to provide a forum for the exchange of ideas among African scholars from a variety of intellectual persuasions and various ...

  7. Collection Development.

    Science.gov (United States)

    School Libraries in Canada, 2002

    2002-01-01

    Includes 21 articles that discuss collection development in Canadian school libraries. Topics include digital collections in school library media centers; print and electronic library resources; library collections; collaborative projects; print-disabled students; informing administrators of the importance of collection development; censorship;…

  8. Stamen development

    NARCIS (Netherlands)

    Keijzer, C.J.

    1986-01-01

    In this thesis the development of the stamen is investigated, using structural and histochemical observations, micromanipulation and in-vitro culture.

    Formation and exposure of pollen are the two main goals of the developing stamen. The main processes of the pollen formation were

  9. Modularizing development

    DEFF Research Database (Denmark)

    Müller, Anders Riel; Doucette, Jamie

    In 2007, South Korea's Ministry of Strategy and Finance (MOSF) and the Korea Development Institute (KDI) launched the Knowledge Sharing Program (KSP) to satisfy the growing interest in Korea's rapid development from high growth economies in East Asia and Africa. The KSP's mandate is "to offer a d...

  10. Developing Friendships:

    DEFF Research Database (Denmark)

    Hansen, Annette Skovsted

    2005-01-01

    reparations and - to a lesser degree - ODA as repentance for war crimes. Officials and other invlved parties often coded their interventions of development projects in language of friendship, whereby they expressed a Japanese desire to change the image of Japan from enemy to friend. In the wake of WWII......Memories of war played a significant role in the conceptualization and initial implementation of development assistance as part of Japanese diplomacy in the 1950s and 1960s. War reparations to Asian neighbors preceded Japanese Official Development Assistance (ODA) and Japanese diplomats explained...... of these programs in development assistance initiatives reflected Japanese attempts to redefine themselves as friends rather than enemies in the minds of Asian neighbors. Other donors also used friendship vocabulary in relation to their development assistance and I will apply a comparative perspective in order...

  11. Representing Development

    DEFF Research Database (Denmark)

    Representing Development presents the different social representations that have formed the idea of development in Western thinking over the past three centuries. Offering an acute perspective on the current state of developmental science and providing constructive insights into future pathways...... and development, addressing their contemporary enactments and reflecting on future theoretical and empirical directions. The first section of the book provides an historical account of early representations of development that, having come from life science, has shaped the way in which developmental science has...... approached development. Section two focuses upon the contemporary issues of developmental psychology, neuroscience and developmental science at large. The final section offers a series of commentaries pointing to the questions opened by the previous chapters, looking to outline the future lines...

  12. ECONOMIC DEVELOPMENT VERSUS SUSTAINABLE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Liliana Scutaru

    2013-09-01

    Full Text Available The paper put in antithesis, theoretically, two models of development and evolution of mankind, namely, economic development based on consumption of the exhaustible resources and pollution and on the other hand the development based on the concepts of sustainable development, involving a new mentality on human life and environment. Economic development includes economic growth, quantified in particular through the GDP, aspect that leads to a reduced analysis taking into account a limited number of variables such as household income, employment labour, consumption of goods and services, etc.. Perpetuation of this model has led, over time, to the company's inability to solve the problems facing mankind today and serious discrepancies regarding current levels of human development. This type of model does not take into account variables such as unemployment, poverty, education, health, environmental pollution, population migration, urban overcrowding, social inclusion etc. At the opposite side of this type of development, which proves to be beyond the crowd problems currently facing humanity, is a new alternative model, that of sustainable development, which provides an integrated view of all these variables and hence the chance of the human society to a new level of evolution. The sustainable development model of mankind put, among others, the zero growth issue or even sustained decrease for some countries. This model requires also reducing resource consumption and increase sustainability of assets created. It also offers practical solutions to many current problems of mankind, among which we can mention providing food for a growing world population and producing clean alternative energy.

  13. Infrastructure Development

    DEFF Research Database (Denmark)

    Williams, Idongesit

    2012-01-01

    It is the quest of every government to achieve universal Access and service of telecommunication services and ICTs. Unfortunately due to the high cost of deploying infrastructure in rural areas of developing countries due to non-significant or no economic activity, this dream of achieving Universal...... access and service of telecommunications/ICTs have been stalled. This paper throws light on a possible Public Private Partnership framework as a development path that will enable affordable network technologies to be deployed in rural areas at a cost that will translate to what the rural dweller...... in a developing country in Africa can afford. The paper is a conceptual paper...

  14. Untenable development

    Energy Technology Data Exchange (ETDEWEB)

    Coimbra, Guilhermina Lavoz [Universidade Federal Rural do Rio de Janeiro, RJ (Brazil)

    1995-12-31

    The author analyses the energy - the role of law and environmental rights for sustainable development - from a critical point of view that is in accordance with internationally accepted jurisprudence. (author). 12 refs.

  15. Developing markets?

    DEFF Research Database (Denmark)

    Figueiredo, Bernardo; Chelekis, Jessica; DeBerry-Spence, Benet

    2015-01-01

    Situated at the intersection of markets and development, this commentary aims to promote a cross-fertilization of macromarketing and transformative consumer research (TCR) that directs attention to the sociocultural context and situational embeddedness of consumer experience and wellbeing, while...... acknowledging complex, systemic interdependencies between markets, marketing, and society. Based on a critical review of the meaning of development and an interrogation of various developmental discourses, the authors develop a conceptual framework that brings together issues of development, wellbeing......, and social inequalities. We suggest that these issues are better understooda nd addressed when examined via grounded investigations of the role of markets in shaping the management of resources, consumer agency, power inequalities and ethics. The use of markets as units of analysis may lead to further cross...

  16. Recent Developments

    CERN Multimedia

    Lankford, A J

    Progress has proceeded rapidly on many parallel developments throughout the Trigger, Data Acquisition, and Detector Controls Project. As design has proceeded on the component TDAQ/DCS systems and subsystems, significant integration tests have been performed. Late last year and early this year, high level trigger and data acquisition developments were brought together in what we called the Phase 1 integrated prototype. During the same period, work was started on integrating the Detector Control System (DCS) with the Online Software that will be used to control, configure, and monitor ATLAS. In addition, integration tests between components of the Level 1 Trigger (LVL1) and Dataflow systems have been performed. The Phase 1 integrated prototype involved integrating the prototype level 2 trigger system (LVL2) developed by the LVL2 Pilot Project with the prototype data acquisition system and one of the Event Filter prototypes developed by the DAQ/EF -1 Prototype project. The integrated prototype included a VME Re...

  17. Leadership Development

    National Research Council Canada - National Science Library

    Oana Simona Hudea

    2014-01-01

      This paper aims at rendering the main characteristics distinguishing leaders from common individuals, as well as from managers, while identifying the progressive steps and the key elements needed for leader development...

  18. Leadership Development

    National Research Council Canada - National Science Library

    Oana Simona Hudea

    2014-01-01

    This paper aims at rendering the main characteristics distinguishing leaders from common individuals, as well as from managers, while identifying the progressive steps and the key elements needed for leader development...

  19. Bone development

    DEFF Research Database (Denmark)

    Tatara, M.R.; Tygesen, Malin Plumhoff; Sawa-Wojtanowicz, B.

    2007-01-01

    The objective of this study was to determine the long-term effect of alpha-ketoglutarate (AKG) administration during early neonatal life on skeletal development and function, with emphasis on bone exposed to regular stress and used to serve for systemic changes monitoring, the rib. Shropshire ram...... has a long-term effect on skeletal development when given early in neonatal life, and that changes in rib properties serve to improve chest mechanics and functioning in young animals. Moreover, neonatal administration of AKG may be considered as an effective factor enhancing proper development...... at 146 days of life and five left and right ribs (fourth to eighth) were removed for analysis. The influence of AKG on skeletal system development was evaluated in relation to both geometrical and mechanical properties, as well as quantitative computed tomography (QCT). No significant differences between...

  20. Brain Development

    Science.gov (United States)

    ... Early Childhood Mental Health Sleep Social and Emotional Development Temperament Trauma and Stress View All Early Learning Child Care Early Literacy Early Math and Science Language and Communication Play School Readiness Screen Time Social Skills View All ...

  1. Toddler development

    Science.gov (United States)

    ... Nelson Textbook of Pediatrics. 20th ed. Philadelphia, PA: Elsevier; 2016:chap 11. Gopnik A. Cognitive development. In: ... Nelson Textbook of Pediatrics. 20th ed. Philadelphia, PA: Elsevier; 2016:chap 7. Hazen EP, Abrams AN, Muriel ...

  2. Personality Development

    Directory of Open Access Journals (Sweden)

    Osman Ozdemir

    2012-12-01

    Full Text Available Personality is the integration of characteristics acquired or brought by birth which separate the individual from others. Personality involves aspects of the individual's mental, emotional, social, and physical features in continuum. Several theories were suggested to explain developmental processes of personality. Each theory concentrates on one feature of human development as the focal point, then integrates with other areas of development in general. Most theories assume that childhood, especially up to 5-6 years, has essential influence on development of personality. The interaction between genetic and environmental factors reveals a unique personality along growth and developmental process. It could be said that individual who does not have any conflict between his/her basic needs and society's, has well-developed and psychologically healthy personality.

  3. Organizational development.

    Science.gov (United States)

    Oakley, P

    Organizational development is a widely used concept in industry and the NHS. It tends to be associated with the softer side of management, and this often masks the complex set of ideas it represents. Its currency in the NHS has risen, especially in the last decade, because its application in practice is closely linked to the process of managing change. This article reviews the definitions of organizational development and explains how the concept can be used to underpin organizational change.

  4. CMP Developer

    OpenAIRE

    Claesson, Jonas

    2004-01-01

    Since first published in 1998, the Enterprise JavaBeans technology has become a popular choice for the development of middleware systems. Even though its popularity, the technology is considered quite complex and rather difficult to master. The main contribution to its complexity is the part of the EJB that deals with persistence. The most common and most popular way of implementing EJB persistence is called Container Managed Persistence (CMP). Today, developers consider the utilization of CA...

  5. Divine development

    DEFF Research Database (Denmark)

    Agarwala, Rina

    2015-01-01

    This article examines how Indian Americans’ religious organizations send not only financial remittances to India, but also social remittances that shape development ideologies. Comparing Indian-American Hindu and Muslim organizations, I find both groups draw from their socioeconomic experiences...... position in the world system and support poverty alleviation efforts within a neoliberal development framework. Indian-American Muslims draw from their poor status in India to overturn economic inequities within India by shifting India's development rhetoric from identity to class. Collective religious...... in India and use their position as elite immigrants in the United States to identify and empower their respective religious constituencies in India and overturn different social relations (not just religious practices). Hindu Americans draw from their majority status in India to overturn India's lower...

  6. Diverting Developments

    DEFF Research Database (Denmark)

    Taudal Poulsen, René

    2013-01-01

    developments in the two industries have diverted after 1970. All the large and medium-sized Danish shipyards have ceased, whereas several equipment suppliers have endured and some have built up strong positions within their respective fields. Focusing on corporate strategies in shipbuilding and marine...

  7. Leadership Development

    Science.gov (United States)

    Mallon, Melissa

    2017-01-01

    This issue's column focuses on online tools and resources available for leadership development of academic, public services staff. The resources are not targeted solely to professional librarians, but rather to all levels of library staff engaged with the public. In addition to inspirational and coaching videos, reviewers recommend resource guides…

  8. Sustainable Development

    African Journals Online (AJOL)

    Tsegai Berhane Ghebretekle

    Abstract. This article examines the concept of sustainable development after the Post-. 2015 Paris Climate Change Agreement with particular emphasis on Ethiopia. Various African countries are vulnerable to climate change, as is evidenced by recent droughts. Ethiopia is selected as a case study in light of its pace in.

  9. Dairy development

    NARCIS (Netherlands)

    Leegwater, P.; Hoorweg, J.C.

    2000-01-01

    The growth of the dairy sector as it has occurred in Kilifi and Malindi Districts is one of the few examples of successful agricultural development in the coastal region in the past decades. Between 1985 and 1997 dairy cattle have more than doubled in number. Three livestock systems are described:

  10. Gender Development

    Science.gov (United States)

    Owen Blakemore, Judith E.; Berenbaum, Sheri A.; Liben, Lynn S.

    2008-01-01

    This new text offers a unique developmental focus on gender. Gender development is examined from infancy through adolescence, integrating biological, socialization, and cognitive perspectives. The book's current empirical focus is complemented by a lively and readable style that includes anecdotes about children's everyday experiences. The book's…

  11. Developing Globalization

    DEFF Research Database (Denmark)

    Hansen, Annette Skovsted

    2017-01-01

    This chapter is the first qualitative micro case study of one aspect of globalization: personal networks as a concrete outcome of development assistance spending. The empirical findings related in this paper present circumstantial evidence that Japanese foreign aid has contributed to globalization...

  12. Leadership Development

    OpenAIRE

    Oana Simona Hudea

    2014-01-01

    This paper aims at rendering the main characteristics distinguishing leaders from common individuals, as well as from managers, while identifying the progressive steps and the key elements needed for leader development. Learning how to lead oneself is a prerequisite for leading others, but without continuous training, coaching or mentoring, and above all, without effective experience, individuals will never get to become real leaders.

  13. Contraceptive Development.

    Science.gov (United States)

    Troen, Philip; And Others

    This report provides an overview of research activities and needs in the area of contraceptive development. In a review of the present state, discussions are offered on the effectiveness and drawbacks of oral contraceptives, intrauterine devices, barrier methods, natural family planning, and sterilization. Methods of contraception that are in the…

  14. Videography Developments

    Science.gov (United States)

    Miller, C. E.

    1983-03-01

    A trend is noted toward simpler, less expensive videography systems in those applications wherein their modest frame rate capabilities will suffice. Mechanically-shuttered color cameras, and electronically amplified and shuttered black-and-white cameras provide excellent results with off-the-shelf CCTV components at low cost. Capabilities of the most sophisticated system continue to be expanded, making it a truly quantitative measuring instrument. Extraction of x-y data is simplified and automatically fed to a computer for processing. Software for short-range photogrammetry is being developed. The performance of film and video systems is compared, and a case is made for the development of a videography system having an approximately 720 frame-per-second capability.

  15. Leadership Development

    Directory of Open Access Journals (Sweden)

    Oana Simona Hudea

    2014-12-01

    Full Text Available This paper aims at rendering the main characteristics distinguishing leaders from common individuals, as well as from managers, while identifying the progressive steps and the key elements needed for leader development. Learning how to lead oneself is a prerequisite for leading others, but without continuous training, coaching or mentoring, and above all, without effective experience, individuals will never get to become real leaders.

  16. EOS developments

    Science.gov (United States)

    Sindrilaru, Elvin A.; Peters, Andreas J.; Adde, Geoffray M.; Duellmann, Dirk

    2017-10-01

    CERN has been developing and operating EOS as a disk storage solution successfully for over 6 years. The CERN deployment provides 135 PB and stores 1.2 billion replicas distributed over two computer centres. Deployment includes four LHC instances, a shared instance for smaller experiments and since last year an instance for individual user data as well. The user instance represents the backbone of the CERNBOX service for file sharing. New use cases like synchronisation and sharing, the planned migration to reduce AFS usage at CERN and the continuous growth has brought EOS to new challenges. Recent developments include the integration and evaluation of various technologies to do the transition from a single active in-memory namespace to a scale-out implementation distributed over many meta-data servers. The new architecture aims to separate the data from the application logic and user interface code, thus providing flexibility and scalability to the namespace component. Another important goal is to provide EOS as a CERN-wide mounted filesystem with strong authentication making it a single storage repository accessible via various services and front- ends (/eos initiative). This required new developments in the security infrastructure of the EOS FUSE implementation. Furthermore, there were a series of improvements targeting the end-user experience like tighter consistency and latency optimisations. In collaboration with Seagate as Openlab partner, EOS has a complete integration of OpenKinetic object drive cluster as a high-throughput, high-availability, low-cost storage solution. This contribution will discuss these three main development projects and present new performance metrics.

  17. Initial development of goCMC: a GPU-oriented fast cross-platform Monte Carlo engine for carbon ion therapy

    Science.gov (United States)

    Qin, Nan; Pinto, Marco; Tian, Zhen; Dedes, Georgios; Pompos, Arnold; Jiang, Steve B.; Parodi, Katia; Jia, Xun

    2017-05-01

    Monte Carlo (MC) simulation is considered as the most accurate method for calculation of absorbed dose and fundamental physics quantities related to biological effects in carbon ion therapy. To improve its computational efficiency, we have developed a GPU-oriented fast MC package named goCMC, for carbon therapy. goCMC simulates particle transport in voxelized geometry with kinetic energy up to 450 MeV u-1. Class II condensed history simulation scheme with a continuous slowing down approximation was employed. Energy straggling and multiple scattering were modeled. δ-electrons were terminated with their energy locally deposited. Four types of nuclear interactions were implemented in goCMC, i.e. carbon-hydrogen, carbon-carbon, carbon-oxygen and carbon-calcium inelastic collisions. Total cross section data from Geant4 were used. Secondary particles produced in these interactions were sampled according to particle yield with energy and directional distribution data derived from Geant4 simulation results. Secondary charged particles were transported following the condensed history scheme, whereas secondary neutral particles were ignored. goCMC was developed under OpenCL framework and is executable on different platforms, e.g. GPU and multi-core CPU. We have validated goCMC with Geant4 in cases with different beam energy and phantoms including four homogeneous phantoms, one heterogeneous half-slab phantom, and one patient case. For each case 3× {{10}7} carbon ions were simulated, such that in the region with dose greater than 10% of maximum dose, the mean relative statistical uncertainty was less than 1%. Good agreements for dose distributions and range estimations between goCMC and Geant4 were observed. 3D gamma passing rates with 1%/1 mm criterion were over 90% within 10% isodose line except in two extreme cases, and those with 2%/1 mm criterion were all over 96%. Efficiency and code portability were tested with different GPUs and CPUs. Depending on the beam

  18. Initial development of goCMC: a GPU-oriented fast cross-platform Monte Carlo engine for carbon ion therapy.

    Science.gov (United States)

    Qin, Nan; Pinto, Marco; Tian, Zhen; Dedes, Georgios; Pompos, Arnold; Jiang, Steve B; Parodi, Katia; Jia, Xun

    2017-05-07

    Monte Carlo (MC) simulation is considered as the most accurate method for calculation of absorbed dose and fundamental physics quantities related to biological effects in carbon ion therapy. To improve its computational efficiency, we have developed a GPU-oriented fast MC package named goCMC, for carbon therapy. goCMC simulates particle transport in voxelized geometry with kinetic energy up to 450 MeV u -1 . Class II condensed history simulation scheme with a continuous slowing down approximation was employed. Energy straggling and multiple scattering were modeled. δ-electrons were terminated with their energy locally deposited. Four types of nuclear interactions were implemented in goCMC, i.e. carbon-hydrogen, carbon-carbon, carbon-oxygen and carbon-calcium inelastic collisions. Total cross section data from Geant4 were used. Secondary particles produced in these interactions were sampled according to particle yield with energy and directional distribution data derived from Geant4 simulation results. Secondary charged particles were transported following the condensed history scheme, whereas secondary neutral particles were ignored. goCMC was developed under OpenCL framework and is executable on different platforms, e.g. GPU and multi-core CPU. We have validated goCMC with Geant4 in cases with different beam energy and phantoms including four homogeneous phantoms, one heterogeneous half-slab phantom, and one patient case. For each case [Formula: see text] carbon ions were simulated, such that in the region with dose greater than 10% of maximum dose, the mean relative statistical uncertainty was less than 1%. Good agreements for dose distributions and range estimations between goCMC and Geant4 were observed. 3D gamma passing rates with 1%/1 mm criterion were over 90% within 10% isodose line except in two extreme cases, and those with 2%/1 mm criterion were all over 96%. Efficiency and code portability were tested with different GPUs and CPUs. Depending on the

  19. Professional development

    Science.gov (United States)

    Yoon, Jin Hee; Hartline, Beverly Karplus; Milner-Bolotin, Marina

    2013-03-01

    The three sessions of the professional development workshop series were each designed for a different audience. The purpose of the first session was to help mid-career physicists aspire for and achieve leadership roles. The second session brought together students, postdoctoral fellows, and early-career physicists to help them plan their career goals and navigate the steps important to launching a successful career. The final session sought to increase awareness of the results of physics education research, and how to use them to help students-especially women-learn physics better. The presentations and discussions were valuable for both female and male physicists.

  20. Illuminating Development

    Science.gov (United States)

    1999-01-01

    Through the support of the NASA SBIR program, Control Vision, Inc. developed novel video techniques for clear, high resolution, real-time imaging of high temperature, high-energy industrial processes, such as welding, plasma arc spraying (coating), arc furnaces, metal casting and refractories (ceramics) melting. The Control Vision systems use reflected laser or strobe illumination, combined with ultra-short exposure times to create video, including the allowance of particle imaging velocimetry (PIV) of fast moving powder particles buried within a plasma stream.

  1. Energy development

    Science.gov (United States)

    Lovich, Jeffrey E.; Jones, L.L.C.; Lovich, R. L.; Halama, K.J.

    2016-01-01

    Large areas of the desert southwest are currently developed or being evaluated for construction of utility-scale renewable energy projects. These projects include numerous solar and wind energy facilities some of which will be massive. Unfortunately, peer-reviewed scientific publications are not yet available to evaluate the potential effects of solar-based utility-scale renewable energy development (USRED) on any species of wildlife, including amphibians and reptiles (herpetofauna). Scientific publications on the effects of wind-based USRED and operation (USREDO) are focused almost exclusively on flying wildlife including birds and bats. To the best of our knowledge the only publications on the effects of wind-based USREDO on herpetofauna are three publications on desert tortoise ecology at a wind energy facility near Palm Springs, California. Those studies suggested that not all effects of USREDO were detrimental in the short-term. However, additional research is required to determine if wind energy operation is compatible with conservation of this long-lived species over longer periods of time.

  2. Developing Rivers

    Directory of Open Access Journals (Sweden)

    Abhik Chakraborty

    2013-10-01

    Full Text Available This article explores the reasons behind the continuation of contentious dam projects in Japanese river basins. Though the River Law of the country was reformed in 1997, and subsequent sociopolitical developments raised hopes that river governance would progress toward a more environment-oriented and bottom-up model, basin governance in Japan remains primarily based on a utilitarian vision that sees rivers as waterways. This article reviews the Achilles heel of the 1997 River Law by examining some most contentious river valley projects, and concludes that a myth of vulnerability to flooding, short-sightedness of river engineers, and bureaucratic inertia combine to place basin governance in a time warp: as projects planned during postwar reconstruction and economic growth continue to be top priorities in policymaking circles while concerns over environment remain largely unaddressed.

  3. BIBFRAME Development

    Directory of Open Access Journals (Sweden)

    Sally McCallum

    2017-09-01

    Full Text Available The Library of Congress has been exploring “linked data” for over 10 years. The genesis of this development goes back to the W3C projects in the late 1990s on SGML, then XML, HTML, and finally a linked data oriented format RDF. In 2007 the Library of Congress organized a community inquiry into the “future of bibliographic control,” that became a catalyst for exploration and change. A wide ranging report was written and some major recommendations were made. Some have been acted upon, others are still on the table such as a rethinking of subject vocabularies. But two technical recommendations were ideally suited for exploration using the emerging linked data framework of the W3C: the use of technology to get broader use of library curated vocabularies and the replacement of the MARC format with a data interchange framework that makes library data more readily available on the web. The Library was investigating the linked data framework for standards and models for exposing its vocabularies such as the LCSH. Accordingly, LCSH was made publicly available as linked data in 2009 followed by name authorities, countries, languages, and many other controlled lists used in bibliographic standards such as MARC, MODS, and PREMIS. This project became the Library of Congress Linked Data Service. Its aim is to establish stable identifiers in URI form for entities and concepts that are useful for description of cultural heritage material. Then in 2011 the Library of Congress announced the start of the Bibliographic Framework Initiative (subsequently labelled “BIBFRAME” to respond to the second major technical recommendation of the future of bibliographic control report: to replace MARC for interchange and to make library resources more visible on the web. The Library of Congress, with the library community, is tackling the challenges described above and this paper looks at main aspects of that development.

  4. Biofilm Development

    DEFF Research Database (Denmark)

    Tolker-Nielsen, Tim

    2015-01-01

    During the past decade we have gained much knowledge about the molecular mechanisms that are involved in initiation and termination of biofilm formation. In many bacteria, these processes appear to occur in response to specific environmental cues and result in, respectively, induction or terminat......During the past decade we have gained much knowledge about the molecular mechanisms that are involved in initiation and termination of biofilm formation. In many bacteria, these processes appear to occur in response to specific environmental cues and result in, respectively, induction...... or termination of biofilm matrix production via the second messenger molecule c-di-GMP. In between initiation and termination of biofilm formation we have defined specific biofilm stages, but the currently available evidence suggests that these transitions are mainly governed by adaptive responses......, and not by specific genetic programs. It appears that biofilm formation can occur through multiple pathways and that the spatial structure of the biofilms is species dependent as well as dependent on environmental conditions. Bacterial subpopulations, e.g., motile and nonmotile subpopulations, can develop...

  5. Implementation of parallel processing in the basf2 framework for Belle II

    Science.gov (United States)

    Itoh, Ryosuke; Lee, Soohyung; Katayama, N.; Mineo, S.; Moll, A.; Kuhr, T.; Heck, M.

    2012-12-01

    Recent PC servers are equipped with multi-core CPUs and it is desired to utilize the full processing power of them for the data analysis in large scale HEP experiments. A software framework basf2 is being developed for the use in the Belle II experiment, a new generation B-factory experiment at KEK, and the parallel event processing to utilize the multi-core CPUs is in its design for the use in the massive data production. The details of the implementation of event parallel processing in the basf2 framework are discussed with the report of preliminary performance study in the realistic use on a 32 core PC server.

  6. Parallel Computing Methods For Particle Accelerator Design

    CERN Document Server

    Popescu, Diana Andreea; Hersch, Roger

    We present methods for parallelizing the transport map construction for multi-core processors and for Graphics Processing Units (GPUs). We provide an efficient implementation of the transport map construction. We describe a method for multi-core processors using the OpenMP framework which brings performance improvement over the serial version of the map construction. We developed a novel and efficient algorithm for multivariate polynomial multiplication for GPUs and we implemented it using the CUDA framework. We show the benefits of using the multivariate polynomial multiplication algorithm for GPUs in the map composition operation for high orders. Finally, we present an algorithm for map composition for GPUs.

  7. Introduction: translocal development, development corridors and development chains.

    NARCIS (Netherlands)

    Zoomers, E.B.; Westen, A.C.M. van

    2011-01-01

    This paper offers an introduction to this Special Issue of International Development Planning Review. It uses the concepts of translocal development, development corridors and development chains to secure a better grasp of what development means in the context of globalisation and how ‘local

  8. NBIT Program Phase I (2007-2010). Part 1, Chapters 1 Through 4

    Science.gov (United States)

    2009-08-27

    Phase II: Development of Mag-SPR probes and detection of Mag-SPR probes in live cell at the single molecule level - Development of multi-core Mag-SPR...SPR probes in live cells - In order to use our Mag-SPR techniques for single molecule imaging in live cells, we chose Her2/neu cancer markers

  9. 1-Pb/s (32 SDM/46 WDM/768 Gb/s) C-band Dense SDM Transmission over 205.6-km of Single-mode Heterogeneous Multi-core Fiber using 96-Gbaud PDM-16QAM Channels

    DEFF Research Database (Denmark)

    Kobayashi, Takayuki; Nakamura, M.; Hamaoka, F.

    2017-01-01

    We demonstrate the first 1-Pb/s unidirectional inline-amplified transmission over 205.6-km of single-mode 32-core fiber within C-band only. 96-Gbaud LDPC-coded PDM-16QAM channels with FEC redundancy of 12.75% realize high-aggregate spectral efficiency of 217.6 b/s/Hz......We demonstrate the first 1-Pb/s unidirectional inline-amplified transmission over 205.6-km of single-mode 32-core fiber within C-band only. 96-Gbaud LDPC-coded PDM-16QAM channels with FEC redundancy of 12.75% realize high-aggregate spectral efficiency of 217.6 b/s/Hz...

  10. Sustainable Development: The Challenge for Community Development.

    Science.gov (United States)

    Gamble, Dorothy N.; Weil, Marie O.

    1997-01-01

    Five areas of inquiry shape the sustainable development movement: environmental movement, women's movement, overpopulation concerns, critique of development models, and new indicators of social progress. Community development workers are challenged to prepare local development projects within a sustainable development framework. (SK)

  11. Developed-developing country partnerships: Benefits to developed countries?

    Directory of Open Access Journals (Sweden)

    Syed Shamsuzzoha B

    2012-06-01

    Full Text Available Abstract Developing countries can generate effective solutions for today’s global health challenges. This paper reviews relevant literature to construct the case for international cooperation, and in particular, developed-developing country partnerships. Standard database and web-based searches were conducted for publications in English between 1990 and 2010. Studies containing full or partial data relating to international cooperation between developed and developing countries were retained for further analysis. Of 227 articles retained through initial screening, 65 were included in the final analysis. The results were two-fold: some articles pointed to intangible benefits accrued by developed country partners, but the majority of information pointed to developing country innovations that can potentially inform health systems in developed countries. This information spanned all six WHO health system components. Ten key health areas where developed countries have the most to learn from the developing world were identified and include, rural health service delivery; skills substitution; decentralisation of management; creative problem-solving; education in communicable disease control; innovation in mobile phone use; low technology simulation training; local product manufacture; health financing; and social entrepreneurship. While there are no guarantees that innovations from developing country experiences can effectively transfer to developed countries, combined developed-developing country learning processes can potentially generate effective solutions for global health systems. However, the global pool of knowledge in this area is virgin and further work needs to be undertaken to advance understanding of health innovation diffusion. Even more urgently, a standardized method for reporting partnership benefits is needed—this is perhaps the single most immediate need in planning for, and realizing, the full potential of international

  12. Developed-developing country partnerships: benefits to developed countries?

    Science.gov (United States)

    Syed, Shamsuzzoha B; Dadwal, Viva; Rutter, Paul; Storr, Julie; Hightower, Joyce D; Gooden, Rachel; Carlet, Jean; Bagheri Nejad, Sepideh; Kelley, Edward T; Donaldson, Liam; Pittet, Didier

    2012-06-18

    Developing countries can generate effective solutions for today's global health challenges. This paper reviews relevant literature to construct the case for international cooperation, and in particular, developed-developing country partnerships. Standard database and web-based searches were conducted for publications in English between 1990 and 2010. Studies containing full or partial data relating to international cooperation between developed and developing countries were retained for further analysis. Of 227 articles retained through initial screening, 65 were included in the final analysis. The results were two-fold: some articles pointed to intangible benefits accrued by developed country partners, but the majority of information pointed to developing country innovations that can potentially inform health systems in developed countries. This information spanned all six WHO health system components. Ten key health areas where developed countries have the most to learn from the developing world were identified and include, rural health service delivery; skills substitution; decentralisation of management; creative problem-solving; education in communicable disease control; innovation in mobile phone use; low technology simulation training; local product manufacture; health financing; and social entrepreneurship. While there are no guarantees that innovations from developing country experiences can effectively transfer to developed countries, combined developed-developing country learning processes can potentially generate effective solutions for global health systems. However, the global pool of knowledge in this area is virgin and further work needs to be undertaken to advance understanding of health innovation diffusion. Even more urgently, a standardized method for reporting partnership benefits is needed--this is perhaps the single most immediate need in planning for, and realizing, the full potential of international cooperation between developed and

  13. Lessons learned from the EU project T-CREST

    DEFF Research Database (Denmark)

    Schoeberl, Martin

    2016-01-01

    partners from academia and industry developed and evaluated a time-predictable multi-core processor with an accompanying compiler and a worst-case execution time analysis tool. The tight cooperation of the partners and the shared vision of the need of new computer architectures for future real-time systems...

  14. I/O-Optimal Distribution Sweeping on Private-Cache Chip Multiprocessors

    DEFF Research Database (Denmark)

    Ajwani, Deepak; Sitchinava, Nodar; Zeh, Norbert

    2011-01-01

    The parallel external memory (PEM) model has been used as a basis for the design and analysis of a wide range of algorithms for private-cache multi-core architectures. As a tool for developing geometric algorithms in this model, a parallel version of the I/O-efficient distribution sweeping framew...

  15. Entrepreneurial Intentions in Developing and Developed Countries

    Science.gov (United States)

    Iakovleva, Tatiana; Kolvereid, Lars; Stephan, Ute

    2011-01-01

    Purpose: This study proposes to use the Theory of Planned Behaviour to predict entrepreneurial intentions among students in five developing and nine developed countries. The purpose is to investigate whether entrepreneurial intention and its antecedents differ between developing and developed countries, and to test the theory in the two groups of…

  16. Leadership development through a constructive development lens

    OpenAIRE

    Brennan, Sinéad

    2017-01-01

    Leadership development has become increasingly important in both academia and the corporate world in recent years (Day et al, 2014). The leadership development literature, while expanding, is limited in its provision of a systemic approach to individual leadership development. Evidence from research conducted on leadership development via coaching, mentoring, on the job experience and 360 degree feedback suggest that leadership development can be supported by deploying these practices in a pr...

  17. What Is Development?

    Science.gov (United States)

    Astle, Alec

    1989-01-01

    Reviews inequalities in development, a topic in the New Zealand Form Six Geography Syllabus. Explains the different perspectives from which to approach development: academic, ideological, political, or personal. Considers the various meanings of development to less developed countries. (GG)

  18. Drug Development Process

    Science.gov (United States)

    ... Device Approvals The Drug Development Process The Drug Development Process Share Tweet Linkedin Pin it More sharing ... Pin it Email Print Step 1 Discovery and Development Discovery and Development Research for a new drug ...

  19. Rural development policy and food industry development

    DEFF Research Database (Denmark)

    Baker, Derek; Abildtrup, Jens; Hedetoft, Anders

    2007-01-01

    Food industry firms in remote areas face a set of constraints, which have motivated the form and function of assistance instruments under various regional and rural development programmes. Recent food industry developments present new challenges to these firms, for which available assistance may...... concrete suggestions for network activities had been made, but overall the development is at an early stage....

  20. Developing New Academic Developers: Doing before Being?

    Science.gov (United States)

    Kensington-Miller, Barbara; Brailsford, Ian; Gossman, Peter

    2012-01-01

    A small group of new academic developers reflected on their induction into the profession and wondered if things could have been done differently. The researchers decided to question the directors of three tertiary academic development units about how they recruited new developers, what skills and competences they looked for and how they inducted…

  1. DEVELOPMENT OF STRUCTURAL ADHESIVES,

    Science.gov (United States)

    Contents: (A) Structural adhesives for metals; development of better adhesives; development of heat resistance adhesives; development of room...temperature setting adhesives; recent investigations of metal-bonding adhesives; development of production processes and design criteria for metal adhesives... development of non-destructive inspection methods for adhesive bonded structures. (B) European papers; British developments in the field of

  2. The ATLAS High Level Trigger Infrastructure, Performance and Future Developments

    CERN Document Server

    Winklmeier, F; The ATLAS collaboration

    2009-01-01

    The ATLAS High Level Trigger (HLT) is a distributed real-time software system that performs the final online selection of events produced during proton-proton collisions at the Large Hadron Collider (LHC). It is designed as a two-stage event filter running on a farm of commodity PC hardware. Currently the system consists of about 850 multi-core processing nodes that will be extended incrementally following the increasing luminosity of the LHC to about 2000 nodes depending on the evolution of the processor technology. Due to the complexity and similarity of the algorithms a large fraction of the software is shared between the online and offline event reconstruction. The HLT Infrastructure serves as the interface between the two domains and provides common services for the trigger algorithms. The consequences of this design choice will be discussed and experiences from the operation of the ATLAS HLT during cosmic ray data taking and first beam in 2008 will be presented. Since the event processing time at the HL...

  3. Development of a parallel trigger framework for rare decay searches

    CERN Document Server

    Pantaleo, Felice

    The simplicity of kaon decays (few decay channels, low final-state multiplicities) enable the possibility to reach an excellent sensitivity in the searches of lepton flavor violating decays. The experimental characteristics of decays like $K^+\\to \\pi^- \\mu^+ \\mu^+$ are very clear and allow an efficient background rejection. However, the measurement of this kind of events requires the production of a remarkable number of kaon decays. The bandwidth of tape recording system currently available does not allow the storage of all the produced events. A multi-stage selection of the potentially interesting events is required (trigger). At NA62, a first selection is done in real-time (response time $<1$ ms) by the level 0 trigger. The level 0 trigger is based on programmable logic (FPGA) that does not allow the same flexibility of the processors used for software programmable computers. The performance of parallel architectures like multi-cores CPUs and GPUs (Graphics Processing Units), located on computers grap...

  4. Clean development mechanism: Perspectives from developing countries

    Energy Technology Data Exchange (ETDEWEB)

    Sari, Agus P.; Meyers, Stephen

    1999-06-01

    This paper addresses the political acceptability and workability of CDM by and in developing countries. At COP-3 in Kyoto in 1997, the general position among developing countries changed from strong rejection of joint implementation to acceptance of CDM. The outgrowth of CDM from a proposal from Brazil to establish a Clean Development Fund gave developing countries a sense of ownership of the idea. More importantly, establishing support for sustainable development as a main goal for CDM overcame the resistance of many developing countries to accept a carbon trading mechanism. The official acceptance of CDM is not a guarantee of continued acceptance, however. Many developing countries expect CDM to facilitate a substantial transfer of technology and other resources to support economic growth. There is concern that Annex I countries may shift official development assistance into CDM in order to gain carbon credits, and that development priorities could suffer as a result. Some fear that private investments could be skewed toward projects that yield carbon credits. Developing country governments are wary regarding the strong role of the private sector envisioned for CDM. Increasing the awareness and capacity of the private sector in developing countries to initiate and implement CDM projects needs to be a high priority. While private sector partnerships will be the main vehicle for resource transfer in CDM, developing country governments want to play a strong role in overseeing and guiding the process so that it best serves their development goals. Most countries feel that establishment of criteria for sustainable development should be left to individual countries. A key issue is how CDM can best support the strengthening of local capacity to sustain and replicate projects that serve both climate change mitigation and sustainable development objectives.There is support among developing countries for commencing CDM as soon as possible. Since official commencement must

  5. Practical web development

    CERN Document Server

    Wellens, Paul

    2015-01-01

    This book is perfect for beginners who want to get started and learn the web development basics, but also offers experienced developers a web development roadmap that will help them to extend their capabilities.

  6. Medicines in Development

    Science.gov (United States)

    ... developing 85 medicines for Alzheimer's. Report Medicines in Development for Arthritis 2014 Report America’s biopharmaceutical research companies are developing 92 innovative new medicines to help the millions of Americans affected ...

  7. FPG Child Development Institute

    Science.gov (United States)

    ... Development, Teaching, and Learning The Frank Porter Graham Child Development Institute will partner with Zero to Three to ... Center October 6, 2017 More Frank Porter Graham Child Development Institute The University of North Carolina at Chapel ...

  8. Wordpress web application development

    CERN Document Server

    Ratnayake, Rakhitha Nimesh

    2015-01-01

    This book is intended for WordPress developers and designers who want to develop quality web applications within a limited time frame and for maximum profit. Prior knowledge of basic web development and design is assumed.

  9. Developing New Models for Collection Development.

    Science.gov (United States)

    Stoffle, Carla J.; Fore, Janet; Allen, Barbara

    1999-01-01

    Discusses the need to develop new models for collection development in academic libraries, based on experiences at the University of Arizona. Highlights include changes in the organizational chart; focusing on users' information goals and needs; integrative services; shared resources; interlibrary loans; digital technology; and funding. (LRW)

  10. SUSTAINABLE DEVELOPMENT THROUGH ECO-ECONOMIC DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Vergina CHIRITESCU

    2013-12-01

    Full Text Available The issue of the relationship between humankind and the environment became scientific and economic concerns of the international community since the first UN Conference on the Human Environment (Stockholm, 1972 and resulted in the work of the World Commission on Environment and Development, established in 1985. Report of the Commission presented in 1987 by GH Brundtland, entitled "Our Common Future" provided the first universally accepted definition of sustainable development as "development that meets the needs of the present generation without compromising the opportunities of future generations to meet their own needs". Brundtland Report, 1987, was reaffirmed by the United Nations Conference on Environment and Development / Earth Summit held in Rio de Janeiro - Brazil, 1992 which established the principles of Agenda 21, which was intended to be a guide implementation of sustainable development for the 21st century, a development that was required to be applied at national, regional and local level. [1] In the context of developing new eco-economic system adopted a number of international conventions that establish detailed obligations of the States and strict implementation deadlines climate change, biodiversity conservation, protection of forests and wetlands, limiting the use of certain chemicals, access information on the state of the environment and other international legal space outlining the practical application of the principles of sustainable economic development in ecological conditions.

  11. Sustainable development in a developing economy: Challenges ...

    African Journals Online (AJOL)

    Sustainable development implies development which ensures maximization of human well being for today's generation which does not lead to declines in future well being. Attaining this path requires eliminating those negative externalities that are responsible for natural resource depletion and environmental degradation.

  12. Open Data for Development | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    The Open Data for Development (OD4D) program brings together a network of leading implementing partners who have a wealth of experience in developing countries. Together, they are harnessing open data initiatives to enhance transparency and accountability, and to facilitate public service delivery and citizen ...

  13. Curriculum Development: Teacher Involvement in Curriculum Development

    Science.gov (United States)

    Alsubaie, Merfat Ayesh

    2016-01-01

    In order for curriculum development to be effective and schools to be successful, teachers must be involved in the development process. An effective curriculum should reflect the philosophy, goals, objectives, learning experiences, instructional resources, and assessments that comprise a specific educational program ("Guide to curriculum…

  14. Web Developer | IDRC - International Development Research Centre

    International Development Research Centre (IDRC) Digital Library (Canada)

    Collaborates with other members of the team and internal stakeholders to conceptualize, develop, and deploy leading edge websites and online applications. Responsible for the entire development cycle including technical architecture, site layout/user interface, database design, all programming and documentation.

  15. Rural Development within the Context of Development ...

    African Journals Online (AJOL)

    PER Electronic Law Review - Potchefstoomse Elektroniese Regsblad

    1994-08-29

    Aug 29, 1994 ... Framework, the Comprehensive Rural Development Programme and the Rural. Development Agency, which ...... the poor, speedy service delivery, and visible local government intervention. 60. At the outset of the .... 71 The objective regarding sexism relates to MDG 3 (the promotion of gender equality and.

  16. Sustainable development goals and inclusive development

    NARCIS (Netherlands)

    Gupta, J.; Vegelin, C.

    Achieving sustainable development has been hampered by trade-offs in favour of economic growth over social well-being and ecological viability, which may also affect the sustainable development goals (SDGs) adopted by the member states of the United Nations. In contrast, the concept of inclusive

  17. Development is Resistance | Tandon | Africa Development

    African Journals Online (AJOL)

    The main the argument of this article is that, in our epoch, resistance against imperial domination is the first law of motion of development. How did I come to this conclusion? I came to it through a critical look at the existing theories of development, and through my active participation in over fifty years of Africa's struggle to ...

  18. Rural Community Development: Bedrock for National Development ...

    African Journals Online (AJOL)

    These include five radio strategies and other factors that aid rural broadcasting for development. Furthermore, the paper emphasizes the development Media theory as a new communication initiative by New World Information order that indicates the need for a propound restructuring of community patters and strategies that ...

  19. Drug discovery and developments in developing countries ...

    African Journals Online (AJOL)

    Poor economies and technological capabilities, lack of human resources and good management in these countries are the major constraints to progress in research and development work for new drugs. This paper discusses these major bottlenecks in drug discovery and development and suggests the way forward.

  20. Innovation in Product Development

    DEFF Research Database (Denmark)

    McAloone, Tim C.; Restrepo-Giraldo, John Dairo

    2005-01-01

    The course on Innovation in Product Development attempts to identify and understand the nature of innovation and product development and their important factors. The course takes both a theoretical and a practical approach and employs a mix of lectures, project work and group discussion. Format...... insight. Course content The following aspects of innovation in product development are considered: - Humans and products - Needs and products - Product life - Teams creating products - Products creating business - Product development models - Organising product development - Product development tools...

  1. Dialogue on leadership development

    OpenAIRE

    Reddy, C. Manohar; Srinivasan, Vasanthi

    2015-01-01

    Sharing our considerable experience as teachers who have designed and conducted leadership development programmes, we discuss the challenges in the field of leadership development. We distinguish between leader development and leadership development; differentiate leadership theories from leadership development theories; discuss the goals of leadership development programmes and their implications for the design of such programmes – the knowing, being and doing gap and how the goal, cognitive...

  2. Open development networked innovations in international development

    CERN Document Server

    Reilly, Katherine M A

    2014-01-01

    The emergence of open networked models made possible by digital technology has the potential to transform international development. Open network structures allow people to come together to share information, organize, and collaborate. Open development harnesses this power, to create new organizational forms and improve people's lives; it is not only an agenda for research and practice but also a statement about how to approach international development. In this volume, experts explore a variety of applications of openness, addressing challenges as well as opportunities. Open development requires new theoretical tools that focus on real world problems, consider a variety of solutions, and recognize the complexity of local contexts. After exploring the new theoretical terrain, the book describes a range of cases in which open models address such specific development issues as biotechnology research, improving education, and access to scholarly publications. Contributors then examine tensions between open model...

  3. CDBG Economic Development Activity

    Data.gov (United States)

    Department of Housing and Urban Development — CDBG activity related to economic development, including commercial or industrial rehab, commercial or industrial land acquisition, commercial or industrial...

  4. Dialogue on leadership development

    Directory of Open Access Journals (Sweden)

    C. Manohar Reddy

    2015-03-01

    Full Text Available Sharing our considerable experience as teachers who have designed and conducted leadership development programmes, we discuss the challenges in the field of leadership development. We distinguish between leader development and leadership development; differentiate leadership theories from leadership development theories; discuss the goals of leadership development programmes and their implications for the design of such programmes – the knowing, being and doing gap and how the goal, cognitive understanding vs. deeper internalization vs. transformation would impact the design; the need to synthesize Western and Indian approaches to leadership development; and the importance of designing coherent leadership development programmes which combine multiple methods and approaches.

  5. Vehicle Development Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — FUNCTION: Supports the development of prototype deployment platform vehicles for offboard countermeasure systems.DESCRIPTION: The Vehicle Development Laboratory is...

  6. Sencha Architect app development

    CERN Document Server

    Groner, Loiane

    2013-01-01

    A standard tutorial-based approach for using Sencha Architect to develop applications in Ext JS and Sencha Touch.Sencha Architect App Development is for Ext JS and Sencha Touch developers that are looking to improve their productivity by using Sencha Architect for app development. Basic knowledge of Ext JS and Sencha Touch is required.

  7. Agile Software Development

    Science.gov (United States)

    Biju, Soly Mathew

    2008-01-01

    Many software development firms are now adopting the agile software development method. This method involves the customer at every level of software development, thus reducing the impact of change in the requirement at a later stage. In this article, the principles of the agile method for software development are explored and there is a focus on…

  8. SOCIOECONOMIC DEVELOPMENT INEQUALITIES AMONG ...

    African Journals Online (AJOL)

    Osondu

    Abstract. Socio-economic development inequality among geographic units is a phenomenon common in both the developed and developing countries. Regional inequality may result in dissension among geographic units of the same state due to the imbalance in socio-economic development. This study examines the.

  9. Development research in Burma | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Burma in the 1990s ranked among the most repressive and self-isolated countries in the world. But the occasional appearance of a few hopeful signs of possible transition prompted IDRC's interest in the potential for development research.

  10. INCUBATORS IN DEVELOPING COUNTRIES: DEVELOPMENT PERSPECTIVES

    Directory of Open Access Journals (Sweden)

    Miladin Stefanovic

    2008-06-01

    Full Text Available Business incubators aim to maximize the chances of success of start - up companies by creating a supportive environment. Typically, this involves offering management assistance, mentoring, access to financing, flexible and low - cost leases, office services, etc. There is large number of business incubators in the world. In this paper issues concerned status, development and overview of existing practice in the world will be presented as well as general issues and perspectives for developing countries.

  11. Self-Development Handbook

    Science.gov (United States)

    2008-01-01

    needs, there are many self- development topics to study—from gaining leadership skills to learning a new language. No matter what you choose to focus...Center for Army Leadership Army Self- Development Handbook US A RM Y Self- Development in the Army The Army defines self- development as planned, goal...will help keep you prepared for changing technical, functional, and leadership responsibilities throughout your career. • Personal Self- Development

  12. Hanford Site Development Plan

    Energy Technology Data Exchange (ETDEWEB)

    Rinne, C.A.; Curry, R.H.; Hagan, J.W.; Seiler, S.W.; Sommer, D.J. (Westinghouse Hanford Co., Richland, WA (USA)); Yancey, E.F. (Pacific Northwest Lab., Richland, WA (USA))

    1990-01-01

    The Hanford Site Development Plan (Site Development Plan) is intended to guide the short- and long-range development and use of the Hanford Site. All acquisition, development, and permanent facility use at the Hanford Site will conform to the approved plan. The Site Development Plan also serves as the base document for all subsequent studies that involve use of facilities at the Site. This revision is an update of a previous plan. The executive summary presents the highlights of the five major topics covered in the Site Development Plan: general site information, existing conditions, planning analysis, Master Plan, and Five-Year Plan. 56 refs., 67 figs., 31 tabs.

  13. Hanford Site Development Plan

    Energy Technology Data Exchange (ETDEWEB)

    Hathaway, H.B.; Daly, K.S.; Rinne, C.A.; Seiler, S.W.

    1993-05-01

    The Hanford Site Development Plan (HSDP) provides an overview of land use, infrastructure, and facility requirements to support US Department of Energy (DOE) programs at the Hanford Site. The HSDP`s primary purpose is to inform senior managers and interested parties of development activities and issues that require a commitment of resources to support the Hanford Site. The HSDP provides an existing and future land use plan for the Hanford Site. The HSDP is updated annually in accordance with DOE Order 4320.1B, Site Development Planning, to reflect the mission and overall site development process. Further details about Hanford Site development are defined in individual area development plans.

  14. DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT

    Energy Technology Data Exchange (ETDEWEB)

    Kathryn Baskin

    2004-07-28

    Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

  15. DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT

    Energy Technology Data Exchange (ETDEWEB)

    Kathryn Baskin

    2005-01-31

    Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

  16. DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT

    Energy Technology Data Exchange (ETDEWEB)

    Kathryn Baskin

    2004-10-31

    Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

  17. DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT

    Energy Technology Data Exchange (ETDEWEB)

    Kathryn Baskin

    2005-04-30

    Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

  18. The Development of Voiding

    DEFF Research Database (Denmark)

    Olsen, Lars Henning

    2011-01-01

    The thesis addresses some new aspeccts in the development of voiding function from midgestation into early childhood.......The thesis addresses some new aspeccts in the development of voiding function from midgestation into early childhood....

  19. Collaborative software development

    NARCIS (Netherlands)

    M. de Jonge (Merijn); E. Visser; J.M.W. Visser (Joost)

    2001-01-01

    textabstractWe present an approach to collaborative software development where obtaining components and contributing components across organizational boundaries are explicit phases in the development process. A lightweight generative infrastructure supports this approach with an online package base,

  20. Odoo development essentials

    CERN Document Server

    Reis, Daniel

    2015-01-01

    This book is intended for developers who need to quickly become productive with Odoo. You are expected to have experience developing business applications, as well as an understanding of MVC application design and knowledge of the Python programming language.

  1. Development from Within

    DEFF Research Database (Denmark)

    Dahms, Mona-Lisa; Faust-Ramos, Edla

    2002-01-01

    This article discusses definitions of and relations between community development, gender and information and communication technologies (ICTs).......This article discusses definitions of and relations between community development, gender and information and communication technologies (ICTs)....

  2. Contingent Information Systems Development

    NARCIS (Netherlands)

    van Slooten, C.; Schoonhoven, Bram

    1996-01-01

    Situated approaches based on project contingencies are becoming more and more an important research topic for information systems development organizations. The Information Services Organization, which was investigated, has recognized that it should tune its systems development approaches to the

  3. Normal growth and development

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/article/002456.htm Normal growth and development To use the sharing features on this page, please enable JavaScript. A child's growth and development can be divided into four periods: Infancy Preschool ...

  4. Game development tool essentials

    CERN Document Server

    Berinstein, Paula; Ardolino, Alessandro; Franco, Simon; Herubel, Adrien; McCutchan, John; Nedelcu, Nicusor; Nitschke, Benjamin; Olmstead, Don; Robinet, Fabrice; Ronchi, Christian; Turkowski, Rita; Walter, Robert; Samour, Gustavo

    2014-01-01

    Offers game developers new techniques for streamlining the critical game tools pipeline. Inspires game developers to share their secrets and improve the productivity of the entire industry. Helps game industry practitioners compete in a hyper-competitive environment.

  5. The Developing Brain.

    Science.gov (United States)

    Schatz, Carla J.

    1992-01-01

    Discusses neural activity and stimulation crucial in fetal brain development and the formation of the mind. Focuses on activity-dependent remodeling related to development of the visual system and retinal activity. (MCO)

  6. Logistic Fuel Processor Development

    National Research Council Canada - National Science Library

    Salavani, Reza

    2004-01-01

    .... The technical challenges in the development of this technology included development of a fractionation device to reduce the size of sulfur scrubber beds, a cracking process with high conversion...

  7. Developer's changes - services

    OpenAIRE

    Šumová, Eva

    2010-01-01

    The first chapter of this bachelor thesis follows the development of the real-estate market, particularly the market of residential development and describes its current status. The second chapter is focused on the development process and discusses the steps that should be made by developer during the planning and subsequent construction of the project. The third chapter is devoted to the sale of flats to new owners. The last chapter outlines the problems of client changes and describes the i...

  8. Sustainable development in a developing economy: Challenges ...

    African Journals Online (AJOL)

    USER

    2013-08-21

    Aug 21, 2013 ... towards environmental management in Nigeria which is a fast developing economy. ... dation, to global concerns such as climate change and .... Business Risk. Green Consumerism. Legislation. Increased Employee. Motivation and Recruitment. International Standards. Increased Access to Finance. C. O.

  9. Development | Page 14 | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Through Agenda 21, the global action plan for sustainable development into the 21st century, we have recognized the need for an integrated approach to planning and managing our land resources. To do otherwise would risk further deterioration of our soils, catastrophic climate change, and tragic losses in natural beauty ...

  10. Private sector development | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2010-12-21

    Dec 21, 2010 ... From its own practical support for private sector development, IDRC has learned that two kinds of assistance can pay dividends: improving the business environment, and stimulating innovation. If donor agencies work to enhance the general environment for business — for example, by pressing for reforms ...

  11. Development | Page 18 | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Every gun that is made, every warship launched, every rocket fired, represents, in the final analysis, a theft from those that hunger and are not fed, are cold and are not clothed." — Dwight D. Eisenhower. Read more about From Defence to Development: Redirecting Military Resources in South Africa. Language English.

  12. Development | Page 11 | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    This volume brings together 14 essays by feminist thinkers from different parts of the world, reflecting on problems of current patterns of development and arguing for political, economic, and social changes to promote equality and sustainability. The essays are written in the context of the “triple crises” of food, fuel, and ...

  13. Development | Page 10 | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Individual chapters examine the development of competition law regimes in diverse countries – Mexico, Hungary, South Africa, Thailand (with remarks on South Korea), and Zambia. Read more about Building New Competition Law Regimes: Selected Essays. Language English. Based on a survey of more than 400 women, ...

  14. Sustainable development in a developing economy: Challenges ...

    African Journals Online (AJOL)

    USER

    2013-08-21

    Aug 21, 2013 ... Key words: Environment, degradation, sustainable, development, paradigms, pollution, recycling. ... E-mail: chemstprom@yahoo.com. ..... Waste generators in this category include mechanic workshops, restaurants, small scale manufacturers, filling stations, retail and wholesale shops, government offices, ...

  15. Development | Page 26 | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    While there seems to be a consensus on increasing aid to Africa, donors will undoubtedly favour democratic countries that adopt sound development policies. ... integration, therefore, continues to be bogged down by the disconnect between institutional progress and the day-to-day reality of the people of West Africa.

  16. The China Development Bank and Sustainable Development

    Directory of Open Access Journals (Sweden)

    Valentina Levanchuk

    2016-11-01

    Full Text Available In this article, the author presents an empirical study of sustainable banking in China and examines the flagship China DevelopmentBank (CDB. The CDB is directly supervised by the State Council of the People’s Republic of China and is one ofthe largest state-owned financial institutions in the country. Its overseas lending is growing rapidly; it increasingly acts as aglobal player, influenced by a variety of international actors. Using the mercantilist framework, the author investigates how the CDB’s social policies diverge from those set by the Chinese authorities. The analysis discusses CDB’s policy variations that are not in line with government interests or prescribed directly by governmental bodies. It concludes that the bank has been active in developing and establishing its own corporate strategy for implementing the concept of sustainable development to promote a balanced development of the economy, society and the environment. That strategy contains the norms and rules set by Chinese regulatory agencies with regard to social and environmental areas, as well as important elements ofthe international practice of corporate responsibility and sustainable funding. The CDB is most likely driven by its desire tobe considered internationally a good corporate citizen and often acts independently from governmental guidance, which insome sense undermines mercantilist perceptions.

  17. The developer`s competitive advantage

    Energy Technology Data Exchange (ETDEWEB)

    DeLugo, E.M. Jr. [Ridgewood Power Corp., NJ (United States)

    1994-09-01

    When developers seek funding for power projects today, they are entering a financial market that is well versed in the risk and reward characteristics of independent power projects. Over the past several years, a high demand for project funding, combined with a variety of well-publicized fiascoes has caused many investors and lenders to adopt a more cautious posture toward leveraged ventures.

  18. Curriculum Development in Geomorphology.

    Science.gov (United States)

    Gregory, Kenneth J.

    1988-01-01

    Examines the context of present curriculum development in geomorphology and the way in which it has developed in recent years. Discusses the content of the geomorphology curriculum in higher education and the consequences of curriculum development together with a consideration of future trends and their implications. (GEA)

  19. Marketing Human Resource Development.

    Science.gov (United States)

    Frank, Eric, Ed.

    1994-01-01

    Describes three human resource development activities: training, education, and development. Explains marketing from the practitioners's viewpoint in terms of customer orientation; external and internal marketing; and market analysis, research, strategy, and mix. Shows how to design, develop, and implement strategic marketing plans and identify…

  20. Anthropology and inclusive development

    NARCIS (Netherlands)

    Bakker, L.; Nooteboom, G.

    Although the term inclusive development is still rare in anthropological texts, it is a key element of anthropology’s relation to development. Concerns of in/exclusion, unequal power relations and (lack of) voice are central here. Anthropology’s encounter with development primarily focuses on a

  1. The Bhutanese Development Story

    OpenAIRE

    Ura, Karma

    2005-01-01

    In this small monograph, the author discusses Bhutan's vision for the Gross National Happiness (GNH) development strategy and the five causes of rapid development. Ura also provides an account of the phases of transformation and guiding principles of GNH development planning.

  2. Professional Development. Issue Brief

    Science.gov (United States)

    Keleher, Julia

    2017-01-01

    In this professional development research brief, the author sets forth the overarching considerations that should be kept in mind when conceptualizing professional development for educators working with neglected or delinquent youth (N or D). The brief begins by defining professional development and demonstrating why it is a critical support for…

  3. Mechanisms in Plant Development

    Energy Technology Data Exchange (ETDEWEB)

    Hake, Sarah [USDA ARS Plant Gene Expression Center

    2013-08-21

    This meeting has been held every other year for the past twenty-two years and is the only regularly held meeting focused specifically on plant development. Topics covered included: patterning in developing tissues; short and long distance signaling; differentiation of cell types; the role of epigenetics in development; evolution; growth.

  4. The New Leadership Development.

    Science.gov (United States)

    Zenger, Jack; Ulrich, Dave; Smallwood, Norm

    2000-01-01

    The fundamental problem in leadership development is the huge disparity between what is being spent and the return on that investment. Remedies include clarifying desired outcomes, putting leadership development in an organizational context, beginning with results, linking competencies to results, transforming leadership development into a…

  5. DEVELOPMENT OF AIRCRAFT,

    Science.gov (United States)

    Criteria of effectiveness of aviation; Development of aviation in the period 1918-1939; Main factors of the progress of speed; Cause of changes of main...factors of combat efficiency of aircraft; Equation of state of production of aircraft; Development of aviation 1939-1959; and Development of one-shot winged and ballistic vehicles.

  6. PHOTOGRAPHIC FILM DEVELOPER

    Science.gov (United States)

    Berry, F.G.

    1958-06-24

    S>An improved photographic developer is presented having very high energy development fine grain characteristics and a long shelf life. These characteristics are obtained by the use of aminoacetic acid in the developer, the other constituents of which are: sodium sulfite, hydroquinone, sodiunn borate, boric acid and potassium bromide, 1-phenyl-3-pyrazolidone.

  7. Development of the Wintertime Sr/Ca-SST Record from Red Sea Corals as a Proxy for the North Atlantic Oscillation

    Science.gov (United States)

    Bernstein, W. N.; Hughen, K. A.

    2009-12-01

    -weekly temporal resolution for downcore SST reconstructions over the past 140 years, which will be used to evaluate the ability of the coral proxies to capture instrumental NAO variability. We expect that this winter Sr/Ca record will exhibit coherence with the NAO similar to that evident between Red Sea instrumental SST and the NAO index. Future work will involve construction of an NAO record back ~400 years, using the multi-core Sr/Ca-SST calibration applied to a combination of new records from modern and fossil coral material. This record will be examined to identify changes in NAO behavior as a function of frequency, and to compare frequency-dependent NAO variability between periods of relatively warm and cold hemispheric climate. This analysis will allow us to test the hypothesized link between NAO behavior and mean climate conditions, and if confirmed, improve predictions regarding the role of the NAO in impending climate change. References Hurrell, J. et al., 2003, in The North Atlantic Oscillation: Climatic Significance and Environmental Impact, 1-36 (A.G.U., Washington, D.C.). Visbeck, M. et al., 2001, Proc. Nat. Acad. Sci. 98, 12876-12877.

  8. Environmental Control Subsystem Development

    Science.gov (United States)

    Laidlaw, Jacob; Zelik, Jonathan

    2017-01-01

    Kennedy Space Center's Launch Pad 39B, part of Launch Complex 39, is currently undergoing construction to prepare it for NASA's Space Launch System missions. The Environmental Control Subsystem, which provides the vehicle with an air or nitrogen gas environment, required development of its local and remote display screens. The remote displays, developed by NASA contractors and previous interns, were developed without complete functionality; the remote displays were revised, adding functionality to over 90 displays. For the local displays, multiple test procedures were developed to assess the functionality of the screens, as well as verify requirements. One local display screen was also developed.

  9. Competence development in UAS

    DEFF Research Database (Denmark)

    Thorslund, Jørgen; Brodersen, Anne Mygind

    As a University of Applied Science (UAS) University College Lillebaelt in Denmark is addressing education, knowledge production and professional development in perspective of life-long and life-wide learning. It is our basic assumption that that internal competence development ? individually...... and organizationally - among UAS educators should be based on same learning concepts as used in professional development to avoid parallelism. Do for yourself, what you preach for others. Second, competence development of faculty is a central element in transformation of our institutions from schools of higher...... education to universities of applied science (UAS). Competence development strategies should thus include objectives for the institutions ability to contribute to knowledge production....

  10. Strategic port development

    DEFF Research Database (Denmark)

    Olesen, Peter Bjerg; Dukovska-Popovska, Iskra; Hvolby, Hans-Henrik

    2014-01-01

    heavily focussed on larger ports. The smaller ports do not have the same resources and knowledge to implement the techniques that have been developed for the larger ports, as these methods often are very complex in nature. Smaller ports do not have the economics of scale to support more complex......While large global ports are recognised as playing a central role in many supply chains as logistic gateways, smaller regional ports have been more stagnant and have not reached the same level of development as the larger ports. The research literature in relation to port development is also...... developments. This paper examines a series of models from the port development literature and then proposes an approach for conceptualizing the strategic development of a port’s collaboration with local operators and the local hinterland based on connected development steps. The paper is based on a literature...

  11. Green Computing In Developed And Developing Countries

    OpenAIRE

    Taruna, S; Singh, Pratibha; Joshi, Soshya

    2014-01-01

    Today e-waste are becoming a major problem for the developing countries. E-waste is defined something as a discarded parts of electronic devices which contains most of the times, hazardous chemicals which is deadly for our environment, example is computer components. Green Computing is the study and practice of designing, using, disposing and manufacturing electronic components in an eco-friendly manner and Green Computing is one of the solution to tackle with this hazardous e-waste problem w...

  12. ACCELERATING CONSTRUCTION INDUSTRY DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Mohan M. Kumaraswamy

    2006-06-01

    Full Text Available The needs for construction industry development are initially viewed from the broader perspectives of imperatives for infrastructure development and national development. All these are clearly more critical in developing countries. A non-exhaustive set of potential drivers and common barriers to construction industry development is identified from previous research. These suggest the usefulness of consolidating a cluster of recent proposals and exercises aiming at (a construction organization development in terms of an over-arching management support system model, as well as improved information and knowledge management; and (b project team development in the context of relationally integrated teams and supply chains, joint risk management and ‘technology and knowledge exchange’ in joint ventures, as well as longer term public private partnerships. These apparently disparate research thrusts are threaded together into a pattern that may inspire, if not feed, specific research and development (R & D agendas for construction industry development in different countries according to their own priorities, constraints and stages of infrastructure and national development.

  13. Liquid developer jetting device

    Energy Technology Data Exchange (ETDEWEB)

    Takano, Jun-ichi; Sasahara, Toshihiko; Nakamura, Manabu

    1996-02-06

    The liquid developer jetting device of the present invention comprises an air jetting nozzle for jetting pressurized air to an object to be tested. A liquid developer jetting nozzle is disposed near the air jetting nozzle for jetting a developer upwardly. The liquid developer jetting nozzle is situated in front of the air jetting nozzle for jetting the liquid developer in the direction perpendicular to the pressurized air jetted from the air jetting nozzle. In order to perform an penetration flaw detection test for an abut-welded portion of a drain nozzle disposed to the bottom of a reactor pressure vessel, the liquid developer jetting device is disposed in adjacent with the welded portion. Since the liquid developer jetted while dispersed from the developer jetting nozzle is further dispersed by the pressurized air from the air jetting nozzle, the density of the jetted the developer is made uniform despite of the short distance to the object to be tested. Accordingly, developing processing can be performed even in a restricted space. (I.N.).

  14. [Moral development in children].

    Science.gov (United States)

    Malá, E

    1989-08-01

    In child psychiatry the developmental aspect is emphasized. Recognition of normal sequence of development in so-called "normal children" makes it possible to reveal pathological conditions (either retardation or acceleration of development, distortion or atypical development). Change-motion-development are philosophical categories considered a manifestation or life--of psychobiological maturation and growth. When investigating the moral development three theories were applied: the developmental theory (Piaget)--learning (Kohlberg), the dynamic theory (Sandler). Among factors which influence in a certain way the moral behaviour the following were selected: age, sex, temperament, family environment. The author describes three stages of moral development in children: preventional stage (moral heteronomy) up to the age of 8 years, conventional and pst conventional (moral autonomy) in adolescence.

  15. Arenas of development

    DEFF Research Database (Denmark)

    Sørensen, Ole Henning; Jørgensen, Ulrik

    1999-01-01

    In this paper the notion 'development arena' is presented and discussed. The notion is suggested to function as a cognitive space for research. It seeks to catch and describe the relational, unstable and heterogeneous character of the development process. It should sensitize both researchers...... and transformations involved in shaping and restructuring activities in a development arena are described and discussed based on a case study of the development of HDTV as the next generation television. It exemplifies different moments and aspects of technology development. A number of configurations of specific...... processes in a development arena are used to exemplify the strengths of this notion. The notion is compared with other theoretical concepts that have been proposed to explain and model the processes that structure industries, markets, and products....

  16. Climate and development

    Energy Technology Data Exchange (ETDEWEB)

    Biswas, A.K.

    1984-01-01

    The authors review the existing knowledge on the inter-relationships between climate and patterns of development; the impact variables on water and agricultural development; and the effects of climate on human health. A case study is also given of the effect of climatic fluctuations on human population in Mesopotamia. Contents: Climate and Development; Climate and Agriculture; Climate and Water Management; Climate and Health; Effects of Climate Fluctation on Human Populations; Study of Mesopotamian Society.

  17. Renewable energy project development

    Energy Technology Data Exchange (ETDEWEB)

    Ohi, J.

    1996-12-31

    The author presents this paper with three main thrusts. The first is to discuss the implementation of renewable energy options in China, the second is to identify the key project development steps necessary to implement such programs, and finally is to develop recommendations in the form of key issues which must be addressed in developing such a program, and key technical assistance needs which must be addressed to make such a program practical.

  18. Revolutionizing Army Leader Development

    Science.gov (United States)

    2011-03-01

    represents a tremendous gap in the Army leader development strategy and can easily be traced back to outdated personnel management models, systems and...St ra te gy R es ea rc h Pr oj ec t REVOLUTIONIZING ARMY LEADER DEVELOPMENT BY COLONEL SHAWN E. REED United States Army DISTRIBUTION...From - To) 4. TITLE AND SUBTITLE Revolutionizing Army Leader Development 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM

  19. Integrated business development

    OpenAIRE

    Koppers, Carina; Klumpp, Matthias

    2010-01-01

    Business Development traditionally has an incorporated focus on marketing and marketing models as well as marketing competencies among business development managers. However, the discussed case studies results and trends in business and market behaviour point to the fact that in the future only an integrated model of business development (including logistics, supply and quality management models and activities, respectively personnel) can provide significant competitive advantages especially ...

  20. Education for sustainable development

    DEFF Research Database (Denmark)

    Breiting, Søren

    2009-01-01

     An introduction to the idea of sustainable development (SD) and education for sustainable development (ESD) with reference to the international Decade for Education for Sustainable Development . The chapter includes a focus on conflicting interests between present and future generations related...... to the use of natural resources and other matters, and how that kind of issues can be dealt with in education as ESD....

  1. Developing effective change agents.

    Science.gov (United States)

    Daniels, L A

    1986-01-01

    With small/rural hospitals employing a multitude of professionals it becomes imperative that trainers explore ways to develop "self-help" or "change agent" groups if training departments are to persist ... indeed exist. The approach described here concentrates not only on developing the training director's skills but also on developing the skills of department managers and supervisors in facilitating change and becoming change agents. It also illustrates the importance of cooperation between department heads and the education and training staff.

  2. Evidence-Based Development

    DEFF Research Database (Denmark)

    Hertzum, Morten; Simonsen, Jesper

    2004-01-01

    Systems development is replete with projects that represent substantial resource investments but result in systems that fail to meet users’ needs. Evidence-based development is an emerging idea intended to provide means for managing customer-vendor relationships and working systematically toward...... and electronic patient records for diabetes patients, this paper reports research in progress regarding the prospects and pitfalls of evidence-based development....

  3. Maximizing Child Development

    OpenAIRE

    Caceres, Susan; Tanner, Jeffrey; Williams, Sian

    2016-01-01

    This policy note advances three inter-related principles to guide policy-makers and agents in international development organizations to prioritize their actions. These principles are drawn from findings from two Early Childhood Development (ECD) reports recently completed by the World Bank Independent Evaluation Group—one on the World Bank support for ECD and the other a systematic review of the sustained effects of early childhood interventions. The principles are: Support the Early Develop...

  4. Node web development

    CERN Document Server

    Herron, David

    2013-01-01

    Presented in a simple, step-by-step format, this book is an introduction to web development with Node.This book is for anybody looking for an alternative to the ""P"" languages (Perl, PHP, Python), or anyone looking for a new paradigm of server-side application development.The reader should have at least a rudimentary understanding of JavaScript and web application development.

  5. Strategy Development in Organisations

    DEFF Research Database (Denmark)

    Sørensen, Lene

    1999-01-01

    " as used in practice and literature. Emphasis is put on how the term is related to the problem, the organisation, the strategy process and the practical way of methodologically developing the strategy. Finally, alternative strategy developing perspectives are presented.......There exist certain ambiguities with the converging fields of information technology and organisational strategy development. The term "IT strategy" has evolved and reflects in some respects this confusion. This paper discusses some of the ambiguities and difficulties of the term "IT strategy...

  6. Telemedicine for Developing Countries

    Science.gov (United States)

    Combi, Carlo; Pozzani, Gabriele

    2016-01-01

    Summary Background Developing countries need telemedicine applications that help in many situations, when physicians are a small number with respect to the population, when specialized physicians are not available, when patients and physicians in rural villages need assistance in the delivery of health care. Moreover, the requirements of telemedicine applications for developing countries are somewhat more demanding than for developed countries. Indeed, further social, organizational, and technical aspects need to be considered for successful telemedicine applications in developing countries. Objective We consider all the major projects in telemedicine, devoted to developing countries, as described by the proper scientific literature. On the basis of such literature, we want to define a specific taxonomy that allows a proper classification and a fast overview of telemedicine projects in developing countries. Moreover, by considering both the literature and some recent direct experiences, we want to complete such overview by discussing some design issues to be taken into consideration when developing telemedicine software systems. Methods We considered and reviewed the major conferences and journals in depth, and looked for reports on the telemedicine projects. Results We provide the reader with a survey of the main projects and systems, from which we derived a taxonomy of features of telemedicine systems for developing countries. We also propose and discuss some classification criteria for design issues, based on the lessons learned in this research area. Conclusions We highlight some challenges and recommendations to be considered when designing a telemedicine system for developing countries. PMID:27803948

  7. Creativity and Strategy Development

    DEFF Research Database (Denmark)

    Sørensen, Lene Tolstrup; Vidal, Rene Victor Valqui

    This paper focus on how creative thinking, processes and methods can support the strategy development and planning process in organisations. First, several fundamental concepts related to both strategy development and planning are stipulated. In addition, the concept of living organisation...... will be discussed as well as the interaction between strategy and creativity. Then, methodological ideas to support the strategy making process are presented enhancing the use of creative methods and tools. Finally, a case study related to the development of a strategy for organisational development using...... creativity tools is discussed....

  8. Shopify application development

    CERN Document Server

    Larkin, Michael

    2014-01-01

    This is an easy-to follow manual that will guide you through the entire process of application development with Shopify, beginning with the installation and configuration of your local development environment for your app to the deployment of the app to Heroku. If you are a web developer or a designer who wants to extend Shopify stores by building apps, then this book is for you. A basic understanding of programming concepts and some familiarity with Shopify is all that is required to get started with Shopify app development.

  9. Identifying leadership development needs.

    Science.gov (United States)

    Casey, Mary

    Nurses and midwives are expected to fulfil leadership roles at all levels, but efforts to support them strategically are often unfocused. To describe nurses' and midwives' clinical leadership development needs and their views on the issue. A survey was carried out with a random sample of nurses and midwives (911 responses), and 22 focus groups were conducted. Leadership development need was greatest in the domain of "developing the profession", while it was lower in areas associated with "managing patient care". As nurses and midwives move further away from direct care, their clinical leadership development needs increase. A number of recommendations are made for education and training programmes.

  10. Pro Access 2010 Development

    CERN Document Server

    Collins, Mark

    2011-01-01

    Pro Access 2010 Development is a fundamental resource for developing business applications that take advantage of the features of Access 2010 and the many sources of data available to your business. In this book, you'll learn how to build database applications, create Web-based databases, develop macros and Visual Basic for Applications (VBA) tools for Access applications, integrate Access with SharePoint and other business systems, and much more. Using a practical, hands-on approach, this book will take you through all the facets of developing Access-based solutions, such as data modeling, co

  11. JPRS Report, Nuclear Developments

    National Research Council Canada - National Science Library

    1989-01-01

    Partial Contents: Nuclear Weapons, Nuclear Development, Nuclear Power Plant, Uranium, Missiles, Space Firm Protested, Satellite, Rocket Launching, Nuclear Submarine, Environmental, Radioactivity, Nuclear Plant...

  12. Small Business Development Center

    Data.gov (United States)

    Small Business Administration — Small Business Development Centers (SBDCs) provide assistance to small businesses and aspiring entrepreneurs throughout the United States and its territories. SBDCs...

  13. Arenas of Development

    DEFF Research Database (Denmark)

    Jørgensen, Ulrik; Sørensen, Ole Henning

    2002-01-01

    The Arena of Development constitutes a cognitive space for innovation and shaping of technology. The article presents and debate the notion of development arena and explores the nature of locations and spaces where technology and innovation can be mapped, analysed and managed.......The Arena of Development constitutes a cognitive space for innovation and shaping of technology. The article presents and debate the notion of development arena and explores the nature of locations and spaces where technology and innovation can be mapped, analysed and managed....

  14. Agile software development

    CERN Document Server

    Dingsoyr, Torgeir; Moe, Nils Brede

    2010-01-01

    Agile software development has become an umbrella term for a number of changes in how software developers plan and coordinate their work, how they communicate with customers and external stakeholders, and how software development is organized in small, medium, and large companies, from the telecom and healthcare sectors to games and interactive media. Still, after a decade of research, agile software development is the source of continued debate due to its multifaceted nature and insufficient synthesis of research results. Dingsoyr, Dyba, and Moe now present a comprehensive snapshot of the kno

  15. Xcode 5 developer reference

    CERN Document Server

    Wentk, Richard

    2014-01-01

    Design, code, and build amazing apps with Xcode 5 Thanks to Apple's awesome Xcode development environment, you can create the next big app for Macs, iPhones, iPads, or iPod touches. Xcode 5 contains gigabytes of great stuff to help you develop for both OS X and iOS devices - things like sample code, utilities, companion applications, documentation, and more. And with Xcode 5 Developer Reference, you now have the ultimate step-by-step guide to it all. Immerse yourself in the heady and lucrative world of Apple app development, see how to tame the latest features and functions, and find loads of

  16. REGIONAL DEVELOPMENT STRATEGY

    Directory of Open Access Journals (Sweden)

    Vaduva Maria

    2011-01-01

    Full Text Available Regional development policies in the EU Member States have included tools whoseimportance varied from one country to another. Can be identified by negative incentives forregional development policy towards location in crowded areas or control over the location,the reallocation of economic activities in national territory, creation of adequateinfrastructure, measures to enhance development, financial incentives granted toenterprises. Sustainable business development, rehabilitation of social infrastructure,including social housing and improved social services. Improved regional and localtransportation are key areas of intervention rehabilitation and upgrading of county roads,city streets, including road construction and rehabilitation of belt.

  17. Visualforce development cookbook

    CERN Document Server

    Bowden, Keir

    2013-01-01

    Visualforce Development Cookbook is written in such a way that even complex concepts are explained in an easy-to-understand manner. Following a Cookbook structure, the book covers some essential technical scenarios and includes over 75 recipes focusing on real-world development problems. This book is packed with illustrations and also contains lots of code samples for the better understanding of the reader.""Visualforce Development Cookbook"" is aimed at developers who have already grasped the basics of Visualforce. Awareness of the standard component library and the purpose of controllers is

  18. Six Sigma software development

    CERN Document Server

    Tayntor, Christine B

    2002-01-01

    Since Six Sigma has had marked success in improving quality in other settings, and since the quality of software remains poor, it seems a natural evolution to apply the concepts and tools of Six Sigma to system development and the IT department. Until now however, there were no books available that applied these concepts to the system development process. Six Sigma Software Development fills this void and illustrates how Six Sigma concepts can be applied to all aspects of the evolving system development process. It includes the traditional waterfall model and in the support of legacy systems,

  19. Developing with Ext GWT Enterprise RIA Development

    CERN Document Server

    Slender, Grant

    2009-01-01

    Developing in Ext GWT is a fast--paced, practical guide to quickly learning the tasks necessary in building enterprise--class Rich Internet Applications. Based around the exciting new UI library from Ajax leaders Ext JS and the latest GWT release, this book takes the reader through setup, the available widgets, and advanced custom widgets and templates, and concludes with a functional sample client--server application in less than 150 pages. Not your typical beginner's guide to programming, this book provides a rapid approach to becoming effective with leading commercial RIA tools and librarie

  20. Postnatal brain development

    DEFF Research Database (Denmark)

    Jernigan, Terry L; Baaré, William F C; Stiles, Joan

    2011-01-01

    After birth, there is striking biological and functional development of the brain's fiber tracts as well as remodeling of cortical and subcortical structures. Behavioral development in children involves a complex and dynamic set of genetically guided processes by which neural structures interact ...

  1. Kentucky Workforce Pathways Development

    Science.gov (United States)

    Coburn, Karen L.

    2017-01-01

    The purpose of the study was to determine whether the advent of healthcare information technology was a viable career pathway for the people of northeastern Kentucky. The qualitative study used the Delphi Method to conduct and examine interviews with nine experts in Kentucky's workforce development, economic development, education, and healthcare…

  2. LNG niche market development

    NARCIS (Netherlands)

    Beata Kviatek

    2011-01-01

    Project focusing on developing a public affairs advice for the corporate business case aiming at development of LNG niche market. The advice is based on research in five areas: (1) an overview of existent regulatory framework with regard to the use of LNG in a small scale market in the EU and

  3. Strategic port development

    DEFF Research Database (Denmark)

    Olesen, Peter Bjerg; Dukovska-Popovska, Iskra; Steger-Jensen, Kenn

    2012-01-01

    This paper proposes a framework for strategic development of a port’s collaboration with its hinterland. The framework is based on literature relevant to port development and undertakes market perspective by considering import/export data relevant for the region of interest. The series of steps...

  4. Thermodynamics and sustainable development

    NARCIS (Netherlands)

    Cornelissen, Rene

    1997-01-01

    It is the objective of this thesis to demonstrate exergy analysis as a powerful instrument to obtain sustainable development. An important aspect of sustainable development is the minimisation of irreversibilities caused by the use of non-renewables. In order to limit the scope of this thesis

  5. Trends in organization development

    NARCIS (Netherlands)

    Allegro, J.T.; Steensma, H.O.; Allegro, J.T.; Steensma, H.O.

    1985-01-01

    Organisation Development (OD) is an extraordinarly complex phenomenon of human society in which in the last few years there have been some interesting developments. Without making any claim to completeness the following topics would seem to have been a focus of interest in recent research on the

  6. SIYAZAMA ENTREPRENEURIAL DEVELOPMENT PROJECT ...

    African Journals Online (AJOL)

    in response to needs for relevance, accountability and responsible sustainable development. Marietjie J. Botha .... to sustainable development efforts (Pellisery & Bergh 2007; Swanepoel. & De Beer 2006). Cognisance ..... Stellenbosch and Franschhoek and for a few, eating in a restaurant and with knife and fork was a first ...

  7. Environment and Alternative Development.

    Science.gov (United States)

    Kothari, Rajni

    Stressing the global dimension to the adversary relationship between economic development and environmental conservation, this monograph examines the philosophical, historical, cultural, and ethnic underpinnings of modern science and technology. In addition, the monograph spells out policy implications of an alternative concept of development and…

  8. Livelihoods in Development

    NARCIS (Netherlands)

    L.J. de Haan (Leo)

    2015-01-01

    textabstractThe world is changing rapidly and so is the field of development studies. When I started my university studies and became interested in what was then called ‘issues of development and underdevelopment’, the map of the world I had grown up with was simple and orderly. It was conveniently

  9. Hydropower development in India

    Energy Technology Data Exchange (ETDEWEB)

    Saxena, Praveen [Govt. of India, New Delhi (India). Ministry of New and Renewable Energy], E-mail: psaxena_98@yahoo.com; Kumar, Arun [Indian Institute of Technology Roorkee, Uttarakhand (India). Alternate Hydro Energy Centre], E-mail: aheciitr@gmail.com

    2011-04-15

    India is posed for large deployment of hydropower in present conducive policy and investment environment. Growing energy demand and concern for carbon emission is making hydropower development more favorable. The Government of India is ensuring a good performance of the new SHP stations by linking the incentives to the SHP developers with the performance of the station. (author)

  10. Understanding Teacher Development.

    Science.gov (United States)

    Hargreaves, Andy, Ed.; Fullan, Michael G., Ed.

    The 12 chapters in this book interpret teacher development in relation to self-development, teacher reflection, teacher biographies, cultures of teaching, teacher careers, teachers' work, gender identity, and classroom practice. The collection begins with an introductory chapter (Andy Hargreaves and Michael G. Fullan) and continues with 11…

  11. Toddler Growth and Development

    Science.gov (United States)

    ... Child: 1 to 2 Years Safety for Your Child: 2 to 4 Years Shoes for Active Toddlers Social Development: 1 Year Olds Social Development: 2 Year Olds Stuttering in Toddlers & Preschoolers: What’s Typical, What’s Not? Teaching Toddlers to Feed Themselves AUDIO Tips for Grandparents of a 1-Year-Old ... Find Us Donate Contact ...

  12. Your Child's Development: Newborn

    Science.gov (United States)

    ... when touched on the sole of the foot Social and Emotional Development soothed by a parent's voice and touch has periods of alertness Cognitive Skills (Thinking and Learning) looks at faces when quiet and alert follows faces When to Talk to Your Doctor Every child develops at his or her own pace, but ...

  13. Media and child development

    NARCIS (Netherlands)

    Piotrowski, J.T.; Vossen, H.G.M.; Valkenburg, P.M.; Wright, J.D.

    2015-01-01

    Decades of research have shown that the relationship between media and childhood is not unidirectional but reciprocal. In this article, both directions of the media-child development relationship are presented. We discuss how child development predisposes children's media use and preferences by

  14. Develop your presentation skills

    CERN Document Server

    Theobald, Theo

    2016-01-01

    Going beyond handling nerves and presenting PowerPoint slides, the third edition of "Develop Your Presentation Skills "offers practical advice on developing a captivating presentation, constructing compelling content, and boosting self-confidence. The book includes three new chapters on delivering a "stripped down"presentation, using new media to engage with the audience, and handling being asked to present on short notice."

  15. Strategic Leadership Development Model

    Science.gov (United States)

    2012-03-19

    Strategic Leadership Development Model by Brigadier Farhat Abbas Sani Pakistan Army United States Army War College...Strategic Leadership Development Model 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Brigadier...Stephen J Gerras AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBER Department of Command Leadership and Management

  16. Promoting teachers' professional development

    NARCIS (Netherlands)

    Runhaar, Pietsje Roelofje

    2008-01-01

    Because teacher quality has a great influence on pupil attainment, teachers’ professional development receives a lot of attention in educational policy. This dissertation contains five studies on how teachers’ professional development, in terms of learning at the workplace, can be explained and

  17. Evaluating professional development

    CERN Document Server

    Guskey, Thomas R

    2000-01-01

    This is a practical guide to evaluating professional development programs at five increasing levels of sophistication: participants' reaction to professional development; how much participants learned; evaluating organizational support and change; how participants use their new knowledge and skills; and improvements in student learning.

  18. Microsoft Azure development cookbook

    CERN Document Server

    Freato, Roberto

    2014-01-01

    If you are an architect, this book will help you make the correct decisions about which Azure building blocks to use. If you are a developer, this book will help you understand how to use them appropriately, and if you are a .NET developer, this book is a pure delight.

  19. COMDES Development Toolset

    DEFF Research Database (Denmark)

    Guo, Yu; Sierszecki, Krzysztof; Angelov, Christo K.

    2008-01-01

    This paper presents the COMDES Development Toolset, which supports component-based development of embedded software in a model-driven fashion. The tool, which is built on the Eclipse platform, provides facilities for the graphical specification of a COMDES application. Once the application...

  20. Developing a Modular Unit.

    Science.gov (United States)

    Bell, Jill

    1981-01-01

    Describes a workshop presentation that attempted to combine the theory and philosophy behind the production of modular units with the practical considerations faced by a teacher or material developer engaged in creating such a unit for himself. The workshop grew out of a project which developed materials for adult ESL. (Author/MES)

  1. Caribbean development: an overview

    Directory of Open Access Journals (Sweden)

    Paul Sutton

    2008-12-01

    Full Text Available Reviews development in the Caribbean, especially since 1990 to the present, and highlights future development prospects. Author discusses 2 reports from 2005 on present developments problems in the Caribbean region: the economics-focussed 'A time to choose: Caribbean development in the 21st century' by the World Bank, and the UN ECLAC report 'The Millennium Development Goals: a Latin American and Caribbean perspective', with a broader, also social and political, development agenda. He relates what both reports recommend for the Caribbean on the basis of their evaluations of past development. The World Bank report advocates a move toward the services sector, including tourism, offshore education, ICT services, and health services as most viable. The ECLAC report notes some social and political advances in comparison to other developing countries, but also remaining problems and inequalities. The author finds that the World Bank report's neoliberal, one-size-fits-all approach is not mindful of specific Caribbean realities, while the ECLAC study is more sensitive to local realities, and espouses a mixed economy. He thus considers the ECLAC approach preferable, but argues that it needs to go further, as it excludes Cuba and Haiti as atypical states.

  2. Mobile systems development

    DEFF Research Database (Denmark)

    Hosbond, Jens Henrik

    2005-01-01

    This paper takes a systems development perspective on mobility, building on preliminary findings of an on-going multiple case study covering 7 companies. The questions driving this paper are: What are the challenges facing development practice in the mobile industry, how do they affect practice...

  3. Data Centric Development Methodology

    Science.gov (United States)

    Khoury, Fadi E.

    2012-01-01

    Data centric applications, an important effort of software development in large organizations, have been mostly adopting a software methodology, such as a waterfall or Rational Unified Process, as the framework for its development. These methodologies could work on structural, procedural, or object oriented based applications, but fails to capture…

  4. Standards and Professional Development

    Science.gov (United States)

    Zengler, Cynthia J.

    2017-01-01

    The purpose of this paper is to describe the professional development that has taken place in conjunction with Ohio adopting the College and Career Readiness (CCR) Standards. The professional development (PD) has changed over time to include not only training on the new standards and lesson plans but training on the concepts defined in the…

  5. Laser Cutting, Development Trends

    DEFF Research Database (Denmark)

    Olsen, Flemming Ove

    1999-01-01

    In this paper a short review of the development trends in laser cutting will be given.The technology, which is the fastest expanding industrial production technology will develop in both its core market segment: Flat bed cutting of sheet metal, as it will expand in heavy industry and in cutting...

  6. Developing Successful Global Leaders

    Science.gov (United States)

    Training, 2011

    2011-01-01

    Everyone seems to agree the world desperately needs strong leaders who can manage a global workforce and all the inherent challenges that go with it. That's a big part of the raison d'etre for global leadership development programs. But are today's organizations fully utilizing these programs to develop global leaders, and, if so, are they…

  7. Cultural Development Thesaurus.

    Science.gov (United States)

    Viet, Jean

    This thesaurus is a bilingual list of descriptors developed to facilitate sharing of information relevant to cultural development. Three listings are included. The first is grouped in generic categories with subheadings of more specific descriptors. Entries in this list are written in English and French. The second and third lists are alphabetic;…

  8. Archives: Africa Development

    African Journals Online (AJOL)

    Items 1 - 50 of 55 ... Archives: Africa Development. Journal Home > Archives: Africa Development. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 of 55 Items, 1 2 > >>. 2017 ...

  9. Sitting: pressure ulcer development.

    Science.gov (United States)

    Collins, F

    Seating is a major factor in pressure ulcer development, but it is frequently overlooked in the literature on pressure area management. Pressure ulcers are largely preventable and nurses are integral to the promotion of good practice. The author examines how implementing careful patient assessment, correct positioning and providing optimum seating equipment can help to reduce the risk of pressure ulcer development.

  10. Developing Mechanisms to Promote

    African Journals Online (AJOL)

    African Sociological Review, 5(1) 2001, pp.l7-35. Michael J. Kahn. Developing Mechanisms to ... Arguably this is a suite of thrusts that promote knowledge development and transfer, but the historical .... is at the level of feasibility studies into mining, ore processing, instrumentation and process control, and recovery of metals ...

  11. Global product development

    DEFF Research Database (Denmark)

    Taylor, Thomas Paul; Ahmed-Kristensen, Saeema

    2016-01-01

    Selecting key performance indicators in conventional product development is a challenging task for project management and is compound by global product development. Informed from the findings of two in depth case studies conducted with large Danish manufacturing companies, in this paper we develo...

  12. Sandia microelectronics development

    Energy Technology Data Exchange (ETDEWEB)

    Weaver, H.T.

    1997-02-01

    An overview of the operations of Sandia`s Microelectronics Development Lab (MDL) is to develop radiation hardened IC, but techniques used for IC processing have been applied to a variety of related technologies such as micromechanics, smart sensors, and packaging.

  13. Law, Democracy & Development

    African Journals Online (AJOL)

    The evolution and implementation of democracy, good governance practices, human rights and socio-economic development are critical issues facing South Africa and Africa as a whole. Law interacts with this process in ways that may promote or inhibit it. Law, Democracy & Development addresses this interaction. Our aim ...

  14. concrete5 for developers

    CERN Document Server

    Uzayr, Sufyan bin

    2014-01-01

    Whether you have had some previous experience with concrete5 or are entirely new to it, this book will help you understand all that you need to know in order to get started with concrete5 development. A background in PHP is required; some knowledge of HTML/CSS is needed in order to fully grasp the concepts underlying concrete5 theme development.

  15. Development of geothermal resources

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-09-01

    This paper describes the geothermal development promotion survey project. NEDO is taking the lead in investigation and development to reduce risks for private business entities and promote their development. The program is being moved forward by dividing the surveys into three ranks of A, B and C from prospects of geothermal resource availability and the state of data accumulation. The survey A lacks number of data, but covers areas as wide as 100 to 300 km{sup 2}, and studies possible existence of high-temperature geothermal energy. The survey B covers areas of 50 to 70 km{sup 2}, investigates availability of geothermal resources, and assesses environmental impacts. The survey C covers areas of 5 to 10 km{sup 2}, and includes production well drilling and long-term discharge tests, other than those carried out by the surveys A and B. Results derived in each fiscal year are evaluated and judged to establish development plans for the subsequent fiscal year. This paper summarizes development results on 38 areas from among 45 areas surveyed since fiscal 1980. Development promotion surveys were carried out over seven areas in fiscal 1994. Development is in progress not only on utilization of high-temperature steam, but also on binary cycle geothermal power generation utilizing hot waters of 80 to 150{degree}C. Fiscal 1994 has carried out discussions for spread and practical use of the systems (particularly on economic effects), and development of small-to-medium scale binary systems. 2 figs., 1 tab.

  16. Emigration for Development?

    DEFF Research Database (Denmark)

    Careja, Romana

    2013-01-01

    This article explores the proposition that the developmental potential of emigration depends on the context of the sending countries. It builds on the insights from the institutional approach to development and adapts them to the migration-development nexus. It argues that government involvement ...

  17. Madagascar Conservation & Development

    African Journals Online (AJOL)

    Madagascar Conservation & Development welcomes the results of original research, field surveys, advances in field and laboratory techniques, book reviews, and informal status reports from research, conservation, development and management programs and in-field projects in Madagascar. In addition, notes on changes ...

  18. Adolescent growth and development.

    Science.gov (United States)

    Chulani, Veenod L; Gordon, Lonna P

    2014-09-01

    Adolescence is a developmental stage defined by physical and psychosocial maturation. This article reviews normal pubertal development and the evaluation and management of adolescents with suspected pubertal abnormalities and provides an overview of adolescent psychosocial development. Copyright © 2014 Elsevier Inc. All rights reserved.

  19. An Organizational Development Handbook

    Science.gov (United States)

    1985-09-01

    Richard Beckhard defined Organizational Development as ’a planned effort, organization-wide, and managed from the top to increase organization...some of theories, models, and tools of Organizational Development (OD) and serves as a guide for the author. It represents the current state in the

  20. Youth Development: Maori Styles

    Science.gov (United States)

    Ware, Felicity; Walsh-Tapiata, Wheturangi

    2010-01-01

    Despite the innovative approach of the Youth Development Strategy Aotearoa and the applicability of its Rangatahi Development Package, the diverse realities and experiences of Maori youth are still presenting unique challenges to national policy in Aotearoa New Zealand. A Maori youth research approach that utilised a combination of action research…

  1. EMI Registry Development Plan

    CERN Document Server

    Memon, S.; Szigeti, G.; Field, L.

    2012-01-01

    This documents describes the overall development plan of the EMI Registry product, the plan focuses on the realisation of the EMI Registry specification as defined in the document. It is understood that during the course of the development phase the specification will likely evolve and the changes will be fed into the specification document.

  2. DEVELOPMENT OF COOLING DEVICE.

    Science.gov (United States)

    The report details progress in the following areas: (1) Development of a miniature vaneaxial fan with improved air delivery and efficiency. Various...configurations are shown and results detailed. (2) Design and development of a motor suitable for driving the vaneaxial fan. One design using

  3. Cleanroom software development

    Science.gov (United States)

    Dyer, M.; Mills, H. D.

    1981-01-01

    The 'cleanroom' software development process is a technical and organizational approach to developing software with certifiable reliability. Key ideas behind the process are well structured software specifications, randomized testing methods and the introduction of statistical controls; but the main point is to deny entry for defects during the development of software. This latter point suggests the use of the term 'cleanroom' in analogy to the defect prevention controls used in the manufacturing of high technology hardware. In the 'cleanroom', the entire software development process is embedded within a formal statistical design, in contrast to executing selected tests and appealing to the randomness of operational settings for drawing statistical inferences. Instead, random testing is introduced as a part of the statistical design itself so that when development and testing are completed, statistical inferences are made about the operation of the system.

  4. Financing Sustainable Development

    DEFF Research Database (Denmark)

    Fejerskov, Adam Moe; Funder, Mikkel; Engberg-Pedersen, Lars

    In the fall of 2015, world leaders adopted the most ambitious global development agenda in history. Meeting the aspiring targets of the Sustainable Development Goals will require financing far beyond traditional aid. At the same time, aid itself is under major pressure as European governments cut...... aid budgets or divert them to meet refugee and migration issues. In this context of massive global ambition and concurrent uncertainty on the future of aid, other actors and sources of development financing seem ever more critical, such as the private sector, private foundations and the BRICS....... But what are in fact the interests and modes of operation of such actors in the context of development financing, and to what extent do they align with the aims of the SDGs? And how do national governments of developing countries themselves perceive and approach these new sources of financing?...

  5. Global product development

    DEFF Research Database (Denmark)

    Hansen, Zaza Nadja Lee; Ahmed-Kristensen, Saeema

    2011-01-01

    Globalisation has enabled companies to globalise their product development process. Today, everything from manufacturing to R&D can be globally distributed. This has led to a more complex and disintegrated product development process. This paper investigates the impacts companies have experienced...... as a result of this, and how they have been addressed. Data was collected through case studies of five Danish multinational corporations. The findings showed that the companies experienced several challenges when they globalised their product development process. They consequently implemented various...... operational solutions to counteract the negative impacts with varying degrees of success. This paper presents a unique look into global product development through an investigation of its impact on the organisation, the product development process, and the product. Furthermore, it shows the solutions...

  6. Finance and Economic Development

    Directory of Open Access Journals (Sweden)

    Ugo Panizza

    2012-03-01

    Full Text Available Published by Palgrave MacmillanThis chapter reviews the literature on finance and economic development. It starts with a description of the roles of finance, a definition of financial efficiency, and a discussion of whether countries may have financial sectors that are ‘too large’ compared to the size of the domestic economy. Next, the author describes several indicators of financial development and reviews the literature on the relationship between financial development and economic growth. In the literature review, he discusses in detail some recent evidence indicating that the marginal contribution of financial development to gross domestic product (GDP growth becomes negative when credit to the private sector reaches 110 per cent of GDP. The chapter concludes with some policy conclusions targeted to developing countries.

  7. School development and education for sustainable development

    Energy Technology Data Exchange (ETDEWEB)

    Centrone, Liza [Univ. of Bressanone (Italy)

    2008-07-01

    OECD (2003) has developed a set of six scenarios for schooling in the future up to 2020. They have been clustered into three main categories: Scenarios 1a and 1b ''Attempting to Maintain the Status Quo'', 2a and 2b ''Re-schooling'', and 3a and 3b ''De-schooling''. The scenarios describe in a somewhat ''pure form'' how schooling in general might take place in about fifteen years. In reality, of course, one would expect complex mixes to emerge between these different possible futures, rather than one or the other. By sharpening the alternatives, however, they provide an opportunity to think about what we want and do not want, and how probable the more or less desired choices are in terms of on-going trends and policies. (orig.)

  8. Pipeline for Contraceptive Development

    Science.gov (United States)

    Blithe, Diana L.

    2016-01-01

    The high rates of unplanned pregnancy reflect unmet need for effective contraceptive methods for women, especially for individuals with health risks such as obesity, diabetes, hypertension, and other conditions that may contraindicate use of an estrogen-containing product. Improvements in safety, user convenience, acceptability and availability of products remain important goals of the contraceptive development program. Another important goal is to minimize the impact of the products on the environment. Development of new methods for male contraception has the potential to address many of these issues with regard to safety for women who have contraindications to effective contraceptive methods but want to protect against pregnancy. It also will address a huge unmet need for men who want to control their fertility. Products under development for men would not introduce eco-toxic hormones in the waste water. Investment in contraceptive research to identify new products for women has been limited in the pharmaceutical industry relative to investment in drug development for other indications. Pharmaceutical R&D for male contraception was active in the 1990’s but was abandoned over a decade ago. The Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) has supported a contraceptive development program since 1969. Through a variety of programs including research grants and contracts, NICHD has developed a pipeline of new targets/products for male and female contraception. A number of lead candidates are under evaluation in the NICHD Contraceptive Clinical Trials Network (CCTN) (1–3). PMID:27523300

  9. Liga developer apparatus system

    Science.gov (United States)

    Boehme, Dale R.; Bankert, Michelle A.; Christenson, Todd R.

    2003-01-01

    A system to fabricate precise, high aspect ratio polymeric molds by photolithograpic process is described. The molds for producing micro-scale parts from engineering materials by the LIGA process. The invention is a developer system for developing a PMMA photoresist having exposed patterns comprising features having both very small sizes, and very high aspect ratios. The developer system of the present invention comprises a developer tank, an intermediate rinse tank and a final rinse tank, each tank having a source of high frequency sonic agitation, temperature control, and continuous filtration. It has been found that by moving a patterned wafer, through a specific sequence of developer/rinse solutions, where an intermediate rinse solution completes development of those portions of the exposed resist left undeveloped after the development solution, by agitating the solutions with a source of high frequency sonic vibration, and by adjusting and closely controlling the temperatures and continuously filtering and recirculating these solutions, it is possible to maintain the kinetic dissolution of the exposed PMMA polymer as the rate limiting step.

  10. Transdisciplinary product development

    Directory of Open Access Journals (Sweden)

    Tomaž Savšek

    2015-12-01

    Full Text Available Research Question (RQ: How can transdisciplinary approach increase the product development process in future industry? Purpose: The aim of the research is to develop a model of an effective product development in the automotive industry based on the transdisciplinary approach. Method: We used a qualitative research approach in order to develop a theoretical framework of transdisciplinarity. The framework comprises the concurrent engineering and experts from different disciplines. The framework was represented by a mathematical model which based on stochastic dynamic programming. Results: We developed a theoretical frameworkand a practical case of transdisciplinary product development in the automotive industry. We presented a mathematical model and information environment which supports such a model. Organization: The findings of the research will provide higher productivity, lower operating costs, change in personnel structure, higher added value, lower sales costs, lower administration costs, reduction in growth of expenses, and lower costs of work equipment. Society: The research impact on higher customer’s satisfaction, increased flexibility of operations, better quality of information, improved control of sources, less waste materials and less pollution, improved planning process, more favourable consideration of employees , improved portfolio management, and better corporate presentation of company. Originality: Transdisciplinary framework combines methods of concurrent engineering and interdisciplinary approach in a process of product development. The development of such a framework is a complete novelty and represents an original approach to product development, which will be particularly suitable for the smart factories of the future. Transdisciplinary framework was transformed in to a mathematical model based on stochastic dynamic programming. Model is supported by the existing information warehouse and represents a potential for

  11. Agile software development

    CERN Document Server

    Stober, Thomas

    2009-01-01

    Software Development is moving towards a more agile and more flexible approach. It turns out that the traditional 'waterfall' model is not supportive in an environment where technical, financial and strategic constraints are changing almost every day. But what is agility? What are today's major approaches? And especially: What is the impact of agile development principles on the development teams, on project management and on software architects? How can large enterprises become more agile and improve their business processes, which have been existing since many, many years? What are the limit

  12. Developing new minds

    Science.gov (United States)

    2008-12-01

    When African leaders met in Lagos, Nigeria, in April 1980 to devise a plan for economic development, they underlined the importance of science and technology with a pledge that each country should spend at least 1% of its GDP on research and development. Nearly 30 years later, the Lagos promise remains largely unfulfilled. Indeed, at a meeting of the African Union in Addis Ababa, Ethiopia, in January last year, the heads of state reiterated the need to increase funding for research and development to 1% by 2010.

  13. Wind energy technology developments

    DEFF Research Database (Denmark)

    Madsen, Peter Hauge; Hansen, Morten Hartvig; Pedersen, Niels Leergaard

    2014-01-01

    This chapter describes the present mainstream development of the wind turbine technology at present. The turbine technology development trend is characterized by up-scaling to turbines with larger capacity for both onshore and offshore applications, larger rotors and new drivetrain solution...... turbine blades and towers are very large series-produced components, which costs and quality are strongly dependent on the manufacturing methods. The industrial wind energy sector is well developed in Denmark, and the competitive advantage of the Danish sector and the potential for job creation...

  14. Piezoelectric Accelerometers Development

    DEFF Research Database (Denmark)

    Liu, Bin; Bang, Lisbet Fogh

    1999-01-01

    The paper describes the development of piezoelectric accelerometers using Finite Element (FE) approach. Brüel & Kjær Accelerometer Type 8325 is chosen as an example to illustrate the advanced accelerometer development procedure. The deviation between simulated results and measured results of Type...... 8325 are below 6%. It is proved that the specifications of the accelerometer can be effectively predicted using the FE method, especially when modifications of the accelerometer are required. The development process of piezoelectric accelerometers in Brüel & Kjær is becoming more efficient...

  15. Piezoelectric accelerometeres development

    DEFF Research Database (Denmark)

    Liu, Bin

    1999-01-01

    The paper describes the development of piezoelectric accelerometers using Finite Element (FE) approach. Brüel & Kjær Accelerometer Type 8325 is chosen as an example to illustrate the advanced accelerometer development procedure. The deviation between simulated results and measured results of Type...... 8325 are below 6%. It is proved that the specifications of the accelerometer can be effectively predicted using the FE method, especially when modifications of the accelerometer are required. The development process of piezoelectric accelerometers in Brüel & Kjær is becoming more efficient....

  16. Professional mobile application development

    CERN Document Server

    McWherter, Jeff

    2012-01-01

    Create applications for all major smartphone platforms Creating applications for the myriad versions and varieties of mobile phone platforms on the market can be daunting to even the most seasoned developer. This authoritative guide is written in such as way that it takes your existing skills and experience and uses that background as a solid foundation for developing applications that cross over between platforms, thereby freeing you from having to learn a new platform from scratch each time. Concise explanations walk you through the tools and patterns for developing for all the mobile platfo

  17. Leap Motion development essentials

    CERN Document Server

    Spiegelmock, Mischa

    2013-01-01

    This book is a fast-paced guide with practical examples that aims to help you understand and master the Leap Motion SDK.This book is for developers who are either involved in game development or who are looking to utilize Leap Motion technology in order to create brand new user interaction experiences to distinguish their products from the mass market. You should be comfortable with high-level languages and object-oriented development concepts in order to get the most out of this book.

  18. Automatic Program Development

    DEFF Research Database (Denmark)

    Automatic Program Development is a tribute to Robert Paige (1947-1999), our accomplished and respected colleague, and moreover our good friend, whose untimely passing was a loss to our academic and research community. We have collected the revised, updated versions of the papers published in his...... by members of the IFIP Working Group 2.1 of which Bob was an active member. All papers are related to some of the research interests of Bob and, in particular, to the transformational development of programs and their algorithmic derivation from formal specifications. Automatic Program Development offers...

  19. Industrialized Information Systems Development

    DEFF Research Database (Denmark)

    Havn, Erling; Bansler, Jørgen P.

    1996-01-01

    The production of application software is rapidly being industrialized. Computer manufacturers and software houses produce a rapidly growing number of generic software applications and systems, and more and more user companies choose to build their computer-based information systems...... with such generic products, instead of custom made software. We discuss how the move away from traditional in-house development and the increasing use of generic software is likely to transform IS development in the near future. We conclude that these developments will make new demands on the information systems...

  20. Human pancreas development.

    Science.gov (United States)

    Jennings, Rachel E; Berry, Andrew A; Strutt, James P; Gerrard, David T; Hanley, Neil A

    2015-09-15

    A wealth of data and comprehensive reviews exist on pancreas development in mammals, primarily mice, and other vertebrates. By contrast, human pancreatic development has been less comprehensively reviewed. Here, we draw together those studies conducted directly in human embryonic and fetal tissue to provide an overview of what is known about human pancreatic development. We discuss the relevance of this work to manufacturing insulin-secreting β-cells from pluripotent stem cells and to different aspects of diabetes, especially permanent neonatal diabetes, and its underlying causes. © 2015. Published by The Company of Biologists Ltd.

  1. Materials development for TESOL

    CERN Document Server

    Mishan, Freda

    2015-01-01

    Materials development has become much more important in the field of TESOL in the last twenty years: modules on materials development are now commonplace on MA TESOL courses around the world. The overall aim of the book is to introduce readers to a wide range of theoretical and practical issues in materials development to enable them to make informed and principled choices in the selection, evaluation, adaptation and production of materials. The book aims to show how these choices need to be informed by an awareness of culture, context and purpose.

  2. Tracking Your Development

    CERN Document Server

    Hennum, Kelly M

    2011-01-01

    This book provides you with the means to set development goals and to track your progress on achieving them. It can help you efficiently gather and make sense of information about your progress and avoid common pitfalls that can block your development. Tracking your development can be captures in a few steps: articulating your goal, creating an action plan, gathering information about your behavior, indentifying barriers and support, and revising your action plan. Taking these steps will greatly increase the likelihood of achieving your goals.

  3. JBoss AS 7 development

    CERN Document Server

    Marchioni, Francesco

    2013-01-01

    This book will kick-start your productivity and help you to master JBoss AS development. The author's experience with JBoss enables him to share insights on JBoss AS development in a clear and friendly way. By the end of the book, you will have the confidence to apply all the newest programming techniques to your JBoss applications.If you are a Java architect or developer who wants to get the most out of the latest release of the JBoss application server, then this book is for you. You are not expected to have accumulated experience on the application server though you must know the basic conc

  4. Beginning Nokia Apps Development

    CERN Document Server

    Rischpater, Ray

    2010-01-01

    While media buzz regularly circulates around iPhone and Android, Nokia still leads the pack in terms of world market share. Symbian, for instance, remains the most widely used mobile operating system. With Nokia's open development platform, the opportunities available for mobile developers to target this vastly popular operating system are abundant and clear. * Use Qt to target both platforms: Symbian, the most widely used mobile operating system in the world, as well as MeeGo, the Intel/Nokia platform for mobile devices. * Develop HTML5 applications for both Symbian and MeeGo platforms that w

  5. Poverty and development

    Directory of Open Access Journals (Sweden)

    Néstor Juan Sanabria Landazábal

    2006-07-01

    Full Text Available In this essay there is argued that the notions ofpoverty, development, quality of life and, in general, all the concepts, variables and indicators used in the explanations and theories on this type, are different points of view from the observers' interests,of the same and only social phenomenon. Therefore,there are multiple works on poverty and development. However, an approximation from the perspective of complexity must bear in mind that the development may refer to the social structure as a whole, and to the actions that modify context of the system, just when it has been ordered through the science in order to explain the reality. Therefore,there is a clase relation between poverty and development. These are different ways to see the same phenomenon, which allow us to think about the life quality from a global sense.

  6. Child Development & Behavior Topics

    Science.gov (United States)

    ... Your Area Crying Baby Back to top D Daycare Delayed Development Delayed Speech and Language Deployment or ... Nursing U-M Michigan Medicine, 1500 E. Medical Center Drive Ann Arbor, MI 48109 734-936-4000 © ...

  7. Cascade Distillation System Development

    Science.gov (United States)

    Callahan, Michael R.; Sargushingh, Miriam; Shull, Sarah

    2014-01-01

    NASA's Advanced Exploration Systems (AES) Life Support System (LSS) Project is chartered with de-veloping advanced life support systems that will ena-ble NASA human exploration beyond low Earth orbit (LEO). The goal of AES is to increase the affordabil-ity of long-duration life support missions, and to re-duce the risk associated with integrating and infusing new enabling technologies required to ensure mission success. Because of the robust nature of distillation systems, the AES LSS Project is pursuing develop-ment of the Cascade Distillation Subsystem (CDS) as part of its technology portfolio. Currently, the system is being developed into a flight forward Generation 2.0 design.

  8. Patterns of gender development.

    Science.gov (United States)

    Martin, Carol Lynn; Ruble, Diane N

    2010-01-01

    A comprehensive theory of gender development must describe and explain long-term developmental patterning and changes and how gender is experienced in the short term. This review considers multiple views on gender patterning, illustrated with contemporary research. First, because developmental research involves understanding normative patterns of change with age, several theoretically important topics illustrate gender development: how children come to recognize gender distinctions and understand stereotypes, and the emergence of prejudice and sexism. Second, developmental researchers study the stability of individual differences over time, which elucidates developmental processes. We review stability in two domains-sex segregation and activities/interests. Finally, a new approach advances understanding of developmental patterns, based on dynamic systems theory. Dynamic systems theory is a metatheoretical framework for studying stability and change, which developed from the study of complex and nonlinear systems in physics and mathematics. Some major features and examples show how dynamic approaches have been and could be applied in studying gender development.

  9. Patterns of Gender Development

    Science.gov (United States)

    Martin, Carol Lynn; Ruble, Diane N.

    2013-01-01

    A comprehensive theory of gender development must describe and explain long-term developmental patterning and changes and how gender is experienced in the short term. This review considers multiple views on gender patterning, illustrated with contemporary research. First, because developmental research involves understanding normative patterns of change with age, several theoretically important topics illustrate gender development: how children come to recognize gender distinctions and understand stereotypes, and the emergence of prejudice and sexism. Second, developmental researchers study the stability of individual differences over time, which elucidates developmental processes. We review stability in two domains—sex segregation and activities/interests. Finally, a new approach advances understanding of developmental patterns, based on dynamic systems theory. Dynamic systems theory is a metatheoretical framework for studying stability and change, which developed from the study of complex and nonlinear systems in physics and mathematics. Some major features and examples show how dynamic approaches have been and could be applied in studying gender development. PMID:19575615

  10. ECONOMIC GROWTH AND DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Mladen M. Ivic

    2015-01-01

    Full Text Available Under Economic Growth mean constantly increasing volume of production in a country, or an increase in gross domestic product as the main quantitative indicators of production for a period of one year. Economic development is not only quantitative changes when it comes to the economic position of the country, but also qualitative changes (changing the economic structure, the emergence of new sectors and industries, new jobs, etc... They lead to a better and more complete satisfaction of all human needs. Production per capita is a measure of the ability of a society to achieve their goals of social and economic development, all in order to meet the constantly growing social needs. The increase in output per capita in economic theory is expressed as economic growth, without which no economic development, but does not have any economic growth to be a function of economic development.

  11. The Electric Vehicle Development

    DEFF Research Database (Denmark)

    Wang, Jingyu; Liu, Yingqi; Kokko, Ari

    2014-01-01

    In order to respond to the energy crisis and environment problem, countries carry out their research and promotion about electric vehicles. As the ten cities one thousand new energy buses started in 2009, the new energy vehicles have been greatly developed in China, while the development...... of electric vehicles is not that good. This paper selects four cities-Los Angeles, Kanagawa, Hamburg, Amsterdam-that promote electric vehicles successfully and deeply analyzes the development of electric vehicles in these four cities and analyzes the factors that affect the development of electric vehicles...... in three aspects-city environment, government and stakeholders. Then the paper discusses the promotion ways and role of government and consumer. Finally, the paper offers some suggestions to promote electric vehicles in China: focusing on feasibility and adaptability of electric vehicles, playing...

  12. Advanced Hydrogen Turbine Development

    Energy Technology Data Exchange (ETDEWEB)

    Marra, John [Siemens Energy, Inc., Orlando, FL (United States)

    2015-09-30

    Under the sponsorship of the U.S. Department of Energy (DOE) National Energy Technology Laboratories, Siemens has completed the Advanced Hydrogen Turbine Development Program to develop an advanced gas turbine for incorporation into future coal-based Integrated Gasification Combined Cycle (IGCC) plants. All the scheduled DOE Milestones were completed and significant technical progress was made in the development of new technologies and concepts. Advanced computer simulations and modeling, as well as subscale, full scale laboratory, rig and engine testing were utilized to evaluate and select concepts for further development. Program Requirements of: A 3 to 5 percentage point improvement in overall plant combined cycle efficiency when compared to the reference baseline plant; 20 to 30 percent reduction in overall plant capital cost when compared to the reference baseline plant; and NOx emissions of 2 PPM out of the stack. were all met. The program was completed on schedule and within the allotted budget

  13. Motivating Your Development Staff.

    Science.gov (United States)

    Henderson, Nancy

    1996-01-01

    Suggestions for motivating institutional advancement staff at colleges and universities include nonfinancial motivators (such as appreciation, team building, empowerment, professional development opportunities, flexibility, and formal recognition) and financial rewards (such as bonuses and merit pay). (DB)

  14. Partners in Economic Development.

    Science.gov (United States)

    Kyle, Regina M. J.

    1981-01-01

    A key element for economic revitalization, the local labor market development, can be supported by colleges and universities in coordination with business and government. The Human Resources Management Center, a strategic model for managing economic dislocations, is described. (MLW)

  15. LIDAR Research & Development Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The LIDAR Research and Development labs are used to investigate and improve LIDAR components such as laser sources, optical signal detectors and optical filters. The...

  16. Teacher professional development

    CSIR Research Space (South Africa)

    Botha, Adèle

    2014-12-01

    Full Text Available Knowledge (PCK) Technological Pedagogical Knowledge (TPCK) Technological Pedagogical Content Knowledge (TPACK) Contexts Figure 3-1: The TPACK framework for educator knowledge (Koehler & Mishra, 2009) Teacher Professional Development  91 Table...

  17. Ocean Technology Development Tank

    Data.gov (United States)

    Federal Laboratory Consortium — The new SWFSC laboratory in La Jolla incorporates a large sea- and fresh-water Ocean Technology Development Tank. This world-class facility expands NOAA's ability to...

  18. Splunk developer's guide

    CERN Document Server

    Smith, Kyle

    2015-01-01

    If you are a Splunk user and want to enter the wonderful world of Splunk application development, then this book is for you. Some experience with Splunk, writing searches, and designing basic dashboards is expected.

  19. Game development with Swift

    CERN Document Server

    Haney, Stephen

    2015-01-01

    If you wish to create and publish fun iOS games using Swift, then this book is for you. You should be familiar with basic programming concepts. However, no prior game development or Apple ecosystem experience is required.

  20. Personal professional development

    CSIR Research Space (South Africa)

    Rao, S

    2008-10-01

    Full Text Available Three workshop sessions on personal professional development were held during the Third IUPAP Women in Physics Conference. These were designed to teach participants about planning for career success, "survival skills," negotiation, and ways...

  1. Logistic Fuel Processor Development

    National Research Council Canada - National Science Library

    Salavani, Reza

    2004-01-01

    The Air Base Technologies Division of the Air Force Research Laboratory has developed a logistic fuel processor that removes the sulfur content of the fuel and in the process converts logistic fuel...

  2. Logistic Fuel Processor Development

    National Research Council Canada - National Science Library

    Salavani, Reza

    2004-01-01

    ... to light gases then steam reform the light gases into hydrogen rich stream. This report documents the efforts in developing a fuel processor capable of providing hydrogen to a 3kW fuel cell stack...

  3. Developable hyperspaces are metrizable

    Directory of Open Access Journals (Sweden)

    L'Ubica Holá

    2003-10-01

    Full Text Available Developability of hyperspace topologies (locally finite, (bounded Vietoris, Fell, respectively on the nonempty closed sets is characterized. Submetrizability and having a Gδ-diagonal in the hyperspace setting is also discussed.

  4. Developing systems engineers

    CSIR Research Space (South Africa)

    Goncalves, D

    2008-07-01

    Full Text Available of cognitive and experiential learning, and learning from a social perspective an attempt is made to understand alternative methods for developing systems engineers. Against this backdrop, efforts implemented at the CSIR are described and preliminary findings...

  5. [Development of neurocritical care].

    Science.gov (United States)

    Piradov, M A; Moroz, V V

    2012-01-01

    In this review we provide the definition, goals and objectives of neurocritical care, evaluation of brief history of its development. Mechanical ventilation, intracranial hypertension, neuromonitoring as underlying basics of neurocritical care approaches are discussed. The main types of pathology and specific methods used in neurocritical care units are discussed. The results of our own research on brain death--the development of national criteria; for Guillain-Barre syndrome--a double decrease in the length of mechanical ventilation and in 2.5 times of the recovery time for independent walking ability; on diphteric polyneuropathy--reduced by 11 times mortality compared with nation-wide indicators of nontraumatic persistent vegetative state--the development of diagnostic and predictive neurophysiologic criteria are demonstrated. Research data of multiple organ disfunction syndrome in severe stroke are described. Further development of neurocritical care is being discussed.

  6. Advanced Interconnect Development

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Z.G.; Maupin, G.; Simner, S.; Singh, P.; Stevenson, J.; Xia, G.

    2005-01-27

    The objectives of this project are to develop cost-effective, optimized materials for intermediate temperature SOFC interconnect and interconnect/electrode interface applications and identify and understand degradation processes in interconnects and at their interfaces with electrodes.

  7. Catalyzing RE Project Development

    Energy Technology Data Exchange (ETDEWEB)

    Anderson, Kate; Elgqvist, Emma; Walker, Andy; Cutler, Dylan; Olis, Dan; DiOrio, Nick; Simpkins, Travis

    2016-09-01

    This poster details how screenings done with REopt - NREL's software modeling platform for energy systems integration and optimization - are helping to catalyze the development of hundreds of megawatts of renewable energy.

  8. Developing Bigraphical Languages

    DEFF Research Database (Denmark)

    Damgaard, Troels Christoffer

    In this dissertation, we study bigraphical languages—languages based on the theory for bigraphs and bigraphical reactive systems developed by Milner and coworkers. We begin by examining algebraic theory for binding bigraphs. We give a term language for binding bigraphs and develop a complete......, a prototype tool for experimenting with bigraphical reactive systems. In a second line of work, we study bigraphical reactive systems as a vehicle for developing a language to model biochemical reactions at the level of cells and proteins. We discuss and isolate B,R-calculi, a family of bigraphical reactive...... side-conditions. As an example, we show that the nondeterministic -calculus (due to Danos and Laneve) can be modelled. Finally, we build on our study above and develop a formal language, the C-calculus, for modelling low-level interaction inside and among cells. At the core of the calculus lies a model...

  9. Physics for development

    Science.gov (United States)

    Chetty, Nithaya; Connell, Simon; Bawa, Ahmed C.

    2007-11-01

    South Africa has recognized the importance of science in the development of its society, in moving away from its apartheid past and striving to eradicate poverty. Opportunities abound in its growing programme of physics research.

  10. The Kidney Development Database.

    Science.gov (United States)

    Davies, J A

    1999-01-01

    The Kidney Development Database is a bioinformatics resource dedicated to providing easily accessible information on gene expression during the development of the pro-, meso-, and metanephroi of a range of vertebrates. It also contains data on mutant phenotypes and on the effects of experimental manipulation of kidneys developing in culture. The database is searchable by gene name or by expression pattern. It is now being used as a test bed for more "advanced" search strategies that measure hypotheses of gene interactions against expression data to test for any clashes that would make the hypotheses untenable and that scan the database for potentially interesting correlations between changes in gene expression. The Kidney Development Database can be accessed free of charge via the World Wide Web at either of the following uniform resource locators (URLs); http://golgi.ana.ed.ac.uk/kidhome.html, and http://www.ana.ed.ac.uk/anatomy/database/kidbase/ kidhome.html.

  11. Infant and Newborn Development

    Science.gov (United States)

    ... touching and smelling Language - starting to make sounds, learning some words, understanding what people say Social - the ability to play with family members and other children Babies do not develop at the same rate. ...

  12. User interface development

    Science.gov (United States)

    Aggrawal, Bharat

    1994-01-01

    This viewgraph presentation describes the development of user interfaces for OS/2 versions of computer codes for the analysis of seals. Current status, new features, work in progress, and future plans are discussed.

  13. Participation for Development

    DEFF Research Database (Denmark)

    Dittrich, Yvonne; De La Harpe, Retha; Korpela, Mikko

    2014-01-01

    Information and Communication Technology (ICT) is more and more promoted as a driver and facilitator of economic growth and development in low and middle income countries. ICT for Development (ICT4D) though has mixed successes. Sustainability of solutions and usability respectively usefulness...... is rare. The workshop aims at bringing together the PD researchers working with under-privileged communities and attracting researchers from the ICT4D communities to the PD conference. The goal is to share experiences and start a discussion on how participation, ICT and development might relate....... for the intended beneficiaries have been reported as causes. Participatory approaches to development have been proposed to address these causes. Participatory Design (PD) seems like a perfect fit. However, at the Participatory Design Conferences, research that addresses PD in low and middle income countries...

  14. Learning Spring application development

    CERN Document Server

    Soni, Ravi Kant

    2015-01-01

    This book is intended for those who are interested in learning the core features of the Spring Framework. Prior knowledge of Java programming and web development concepts with basic XML knowledge is expected.

  15. Developing Software Simulations

    Directory of Open Access Journals (Sweden)

    Tom Hall

    2007-06-01

    Full Text Available Programs in education and business often require learners to develop and demonstrate competence in specified areas and then be able to effectively apply this knowledge. One method to aid in developing a skill set in these areas is through the use of software simulations. These simulations can be used for learner demonstrations of competencies in a specified course as well as a review of the basic skills at the beginning of subsequent courses. The first section of this paper discusses ToolBook, the software used to develop our software simulations. The second section discusses the process of developing software simulations. The third part discusses how we have used software simulations to assess student knowledge of research design by providing simulations that allow the student to practice using SPSS and Excel.

  16. POSITIONING STRATEGIES DEVELOPMENT

    National Research Council Canada - National Science Library

    Shakhshir Ghassan;

    2014-01-01

    The positioning strategy has suffered serious changes in the last few decades, being influenced by the rapid development of competition and the growing focus on specific traits belonging to the market...

  17. Systematic Software Development

    DEFF Research Database (Denmark)

    Kuhrmann, Marco; Méndez Fernández, Daniel

    2015-01-01

    makes these countries an attractive host for software companies. Often, high-quality engineering and excellent quality of products, e.g., machinery and equipment, are mentioned. Yet, the question is: Can such arguments be also found for the software industry? We aim at investigating the degree...... project- and quality management and their implementation in practice. So far, our results suggest that the necessity for a systematic software development is well recognized, while software development still follows an ad-hoc rather than a systematized style. Our results provide initial findings, which we......The speed of innovation and the global allocation of resources to accelerate development or to reduce cost put pressure on the software industry. In the global competition, especially so-called high-price countries have to present arguments why the higher development cost is justified and what...

  18. LAW DEMOCRACY & DEVELOPMENT

    African Journals Online (AJOL)

    HP27975994114

    legal analysis (Durban: LexisNexis Butterworths. 2003) at 621. .... survey” World Bank Social protection and labour, Human Development Network, Discussion Paper No. 1109 (2011). ..... work of experts in the relevant field.80. As has been ...

  19. Fiber Optics Instrumentation Development

    Science.gov (United States)

    Chan, Patrick Hon Man; Parker, Allen R., Jr.; Richards, W. Lance

    2010-01-01

    This is a general presentation of fiber optics instrumentation development work being conducted at NASA Dryden for the past 10 years and recent achievements in the field of fiber optics strain sensors.

  20. TOURISM AND SUSTAINABLE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Gina Ionela Butnaru

    2014-06-01

    Full Text Available Tourism and sustainable development are the subject of many initiatives and public or private debates in Romania. The main problem to which these initiatives try to find an answer is mostly related to the income generation for the local communities by using rationally and efficiently the local potential, in agreement with the economic, social, natural, and cultural factors. Consequently, some measures should be taken, and the tourist sector as a whole needs all the methods of sustainable development: new technologies, change of social behaviour, change of environmental legislation, methods of environmental management, better planning and development of control procedures. In this article, we presented a model of tourism development which should be applied in all the regions of great tourist attraction, and we realised a synthesis of the socio-economic advantages of sustainable tourism.

  1. Developing Friendship and Intimacy.

    Science.gov (United States)

    Maslow, Abraham H.

    1991-01-01

    Presents previously unpublished paper written by Abraham Maslow in April 1968 in which Maslow speculates on the issue that society had become pathologically individualistic and needed to develop better means of facilitating close relationships among people. (Author/ABL)

  2. Urban Quality Development & Management

    DEFF Research Database (Denmark)

    Lehmann, Martin; Fryd, Ole

    2008-01-01

    Purpose: The purpose of this article is to describe and discuss the development and the structure of a new international master on the subject of Urban Quality Development & Management, and explore the potential of the process and the outcome in serving as models adoptable by faculty at other......: Urban quality development and management is dependent on human resource development, institutionalised networks and confident exchange of knowledge, and must identify and incorporate multiple environmental, social, economic and cultural aspects. The authors find that at the core of innovative societies...... new curricula. Basing itself on user-producer interaction within the framework of innovation and innovation theory, the programme addresses urban quality through a multi-disciplinary and inter-institutional collaboration between city administrations and universities. Per se, the approach is easily...

  3. SUSTAINABLE DEVELOPMENT PARADIGM - SYNOPSIS

    Directory of Open Access Journals (Sweden)

    Constantinescu Andreea

    2014-07-01

    Full Text Available Even if sustainable development is a concept that gained quite recently its scientific prestige, through contribution of researchers its content has upgraded to a high degree of conceptual luggage and, through contribution from governance representatives, has gained an impressive good-practice background. Allowing the use of different methodological premises and conceptual tools, sustainable development paradigm is equipped with all the elements that would allow the opening of new horizons of knowledge. Based on the facility which can operate the concept of sustainable development, the European Union aims to develop both a more competitive economy based on environmental protection as well as a new governance of economic policy. This on one hand demonstrates the sustainable development ability to irradiate creativity towards the establishment of interdisciplinary bridges and on the other hand explains the growing interest of researchers interested in the problem of analyzing in detail this fruitful concept. Launched first as a theoretical framework to serve justify actions responsible for weighting economic growth, the concept of Sustainable Development has quickly become a topic of ethical debate circumscribed to the area of perfectibility of human nature to the necessity registry. In this regard, the philosophical content of this paradigm could not remain outside researchers concerns, who want to provide both policy makers and the general public a wide range of evidence to demonstrate the viability of this paradigm. Academia waits until maximization of the contribution of governance to achieve sustainable economic development, which consists in conjunction of this upward path with the momentum given by public policy sync, perfectly adapted for globalization era and all crises to come. However, because this concept based its structure and composition on three pillars, equally important economy, society and environment any attempt to strengthen

  4. Entrepreneurship and regional development

    DEFF Research Database (Denmark)

    Müller, Sabine

    This literature review examines how entrepreneurship and regional development has been previously addressed theoretically and empirically. Regional Science and Entrepreneurship are two fields with their own distinct literature's. The question is therefore, how do these two fields talk about...... the respective other? What are the commonalities and differences? The purpose of this article is to create an analytical synthesis by combining the insights of the two literature's in order to gain a fuller understanding of the relation between entrepreneurship and regional development....

  5. Development and life quality

    OpenAIRE

    Néstor Juan Sanabria Landazábal

    2007-01-01

    In this theoretical assay its shows up, through someauthors, like it has changed the perception of the development from the basic hypotheses of the classic authors, until the problems formulated by current thinkers, some of them prizes Nobel. Its concludes with a proposal of compression of the social change, starting from holistic and hologramatics approaches, with that which quality of life and development, when they look at themselves as a problem of the society in their group they are syno...

  6. Knowledge Development in Internship

    DEFF Research Database (Denmark)

    Dau, Susanne

    2015-01-01

    The purpose of the chapter is to shed light on how these challenges and tendencies affect students’´ access to tacit and explicit knowledge and the professions’ knowledge development. To address these challenges, the chapter examines the question: How might periods of internship, offering different...... kinds of access to tacit and explicit knowledge by apprenticeship and reflection, have consequences for both students’ learning and the professions’ knowledge development?...

  7. Develop your leadership skills

    CERN Document Server

    Adair, John

    2016-01-01

    "Develop Your Leadership Skills "is John Adair s most accessible title on leadership. Full of exercises and checklists, it can help boost confidence levels and guide and inspire anyone on their journey to becoming a leader of excellence. Acknowledged as a world expert, John Adair offers stimulating insights into recognizing and developing individual leadership qualities, acquiring personal authority, and mastering core leadership functions such as planning, communicating and motivating. The new edition includes summary points for each chapter.

  8. Localisation for industrial development

    CSIR Research Space (South Africa)

    Bhugwandin, Ashley

    2017-10-01

    Full Text Available Development Plan New Growth Plan Presidential Infrastructure Coordinating Commission Designation Industrial Policy Action Plan Technology Localisation Programme 4 Current situation • Majority of South African suppliers are importers with a....pdf.txt Content-Type text/plain; charset=UTF-8 1 Localisation for industrial development 05 October 2017 Ashley Bhugwandin, CSIR 2 Context • Commitment from government to support localisation and move it forward • Government has a responsibility...

  9. The development of morality

    OpenAIRE

    Blair, R. J. R.

    1992-01-01

    Evidence that individuals distinguish between moral and conventional rules is reviewed. Moral rules prohibit actions that result in victims (e.g., violence, stealing, etc.). Conventional rules prohibit actions that do not result in victims (e.g., not saying please, dressing in opposite sex clothes). Previous theoretical accounts of the development of the moral/conventional distinction are discussed. These theories are contrasted with an approach that is developed here. It is pr...

  10. Global software development

    DEFF Research Database (Denmark)

    Matthiesen, Stina

    2016-01-01

    This overview presents the mid stages of my doctoral research-based on ethnographic work conducted in IT companies in India and in Denmark-on collaborative work within global software development (GSD). In the following I briefly introduce how this research seeks to spark a debate in CSCW...... by challenging contemporary ideals about software development outsourcing through the exploration of the multiplicities and asymmetric dynamics inherent in the collaborative work of GSD....

  11. Semantic Web Development

    Science.gov (United States)

    2006-09-01

    Datamining Initiative (TAMI [TAMI])), implementing these ideas much more fully. 4.0 Language development 4.1 OWL development DAML and OIL languages...Swick (for DIG),Transparent Accountable Datamining Initiative, 2005. http://dig.csail.mit.edu/TAMI/ to.Ical: Dan Connolly and Tim Berners-Lee...open and unbounded Semantic Web which was delivered as N3 (Notation3). TAMI: (Transparent Accountable Datamining Initiative), technical, legal, and

  12. Web database development

    OpenAIRE

    Tsardas, Nikolaos A.

    2001-01-01

    This thesis explores the concept of Web Database Development using Active Server Pages (ASP) and Java Server Pages (JSP). These are among the leading technologies in the web database development. The focus of this thesis was to analyze and compare the ASP and JSP technologies, exposing their capabilities, limitations, and differences between them. Specifically, issues related to back-end connectivity using Open Database Connectivity (ODBC) and Java Database Connectivity (JDBC), application ar...

  13. Nutrition and pubertal development

    OpenAIRE

    Ashraf Soliman; Vincenzo De Sanctis; Rania Elalaily

    2014-01-01

    Nutrition is one of the most important factors affecting pubertal development. Puberty entails a progressive nonlinear process starting from prepubescent to full sexual maturity through the interaction and cooperation of biological, physical, and psychological changes. Consuming an adequate and balanced healthy diet during all phases of growth (infancy, childhood and puberty) appears necessary both for proper growth and normal pubertal development. Girls begin puberty at an earlier age compar...

  14. Knowledge Development in Internship

    DEFF Research Database (Denmark)

    Dau, Susanne

    2015-01-01

    The purpose of the chapter is to shed light on how these challenges and tendencies affect students’´ access to tacit and explicit knowledge and the professions’ knowledge development. To address these challenges, the chapter examines the question: How might periods of internship, offering differe...... kinds of access to tacit and explicit knowledge by apprenticeship and reflection, have consequences for both students’ learning and the professions’ knowledge development?...

  15. Voice search for development

    CSIR Research Space (South Africa)

    Barnard, E

    2010-09-01

    Full Text Available -state lan- guage model is then derived. The details of these issues are, of course, quite variable across the different languages of the developing world. We distinguish between three classes of languages, based on the amount of rel- evant resources...- formation and speech corpora, and also with respect to the availability of speech technologists who are intimately famil- iar with the languages. The development of suitable acous- tic models for languages in this class is relatively straightfor- ward...

  16. Trends in organization development

    OpenAIRE

    Allegro, J.T.; Steensma, H.O.

    1985-01-01

    Organisation Development (OD) is an extraordinarly complex phenomenon of human society in which in the last few years there have been some interesting developments. Without making any claim to completeness the following topics would seem to have been a focus of interest in recent research on the subject: integration of several approaches to OD; greater emphasis on the use of theories; the complexity of the change process and automation of work and administrative processes. Allegro and Bruinin...

  17. Improving Software Developer's Competence

    DEFF Research Database (Denmark)

    Abrahamsson, Pekka; Kautz, Karlheinz; Sieppi, Heikki

    2002-01-01

    Emerging agile software development methods are people oriented development approaches to be used by the software industry. The personal software process (PSP) is an accepted method for improving the capabilities of a single software engineer. Five original hypotheses regarding the impact...... and time estimation skills but that the productivity did not decrease and the resulting product quality was improved. The implications of these findings are briefly addressed....

  18. Foresighting for Inclusive Development

    DEFF Research Database (Denmark)

    Dahl Andersen, Allan; Andersen, Per Dannemand

    We propose that foresight can contribute to inclusive development by making innovation policy processes more inclusive, which in turn makes innovation systems more inclusive. Processes of developing future-oriented innovation policies are often unsuccessful and rarely inclusive. We conceptualize ...... and processes in two foresight cases in two emerging economies - Brazil and South Korea. Although the research is exploratory and the results tentative, the empirical studies support our main propositions....

  19. Management development in Denmark

    DEFF Research Database (Denmark)

    Leth, Camilla; Hjalager, Anne-Mette; Holt Larsen, Henrik

    2003-01-01

    be published in books, journals and newspaper articles. Hopefully the findings of thelarge European project will thus affect the way in which educational institutions andorganizations manage the `Europeanization' of management development.The present report solely describes significant findings from...... of which is to further cross-countrycompetence development and collaboration within the European educational sector. Thefirst phase of the project is a quantitative interview study of one hundred organizations ineach of the participating countries. The second phase consists in qualitative case studiesin...

  20. Ambient and development

    OpenAIRE

    Kátia Cristine Schimidt; Maria Angélica Binotto; Grasiely Fassin Borges; Taíse Soares da Costa; Sidney Ferreira Farias

    2005-01-01

    Searching for arguments to contribute with a nation development andgrowting, this content intents to show the importance of the human development notion and the Physical Education role as human corporal activity. In an approximative model, it pursuits to do a positive link among educative programs levels of the brazilian educational society. The text also tries to associete Physical Education activities to a fondness for continuated mobility, especially into a school scale. Relatively to well...