WorldWideScience

Sample records for technique titled decoupling

  1. Decoupling

    NARCIS (Netherlands)

    Fletcher, Robert; Rammelt, Crelis

    2017-01-01

    Central to the United Nations’ post-2015 development agenda grounded in the Sustainable Development Goals is the notion of ‘decoupling’: the need to divorce economic growth from its ecological impact. For proponents, decoupling entails increasing the efficiency with which value is derived from

  2. Cladding technique for development of Ag-In-Cd decoupler

    International Nuclear Information System (INIS)

    Teshigawara, M.; Harada, M.; Saito, S.; Kikuchi, K.; Kogawa, H.; Ikeda, Y.; Kawai, M.; Kurishita, H.; Konashi, K.

    2005-01-01

    To develop a Ag (silver)-In (indium)-Cd (cadmium) alloy decoupler, a method is needed to bond the decoupler between two plates of the Al alloy (A6061-T6). We found that a better HIP condition was temperature, pressure and holding time at 803 K, 100 MPa and 1 h, respectively, for small test pieces (φ 22 mm in diam. x 5 mm in height). Especially, a sandwich case (a Ag-In plate with thickness of 0.5 mm between two Ag-Cd plates with thickness of 1.25 mm) gave easier (or better) bonding results. Though a hardened layer is found in the bonding layer, the rupture strength of the bonding layer is more than 30 MPa, which is higher than the design stress in our application

  3. Power decoupling techniques for single-phase power electronics systems — An overview

    DEFF Research Database (Denmark)

    Tang, Yi; Blaabjerg, Frede

    2015-01-01

    . In this paper, recently proposed state-of-the-art power decoupling techniques for ripple power reduction in these systems are presented and classified into different groups for performance comparison. The pros and cons of these techniques are discussed and identified, and the conclusions drawn will be useful...

  4. A New Hybrid BFOA-PSO Optimization Technique for Decoupling and Robust Control of Two-Coupled Distillation Column Process

    Directory of Open Access Journals (Sweden)

    Noha Abdelkarim

    2016-01-01

    Full Text Available The two-coupled distillation column process is a physically complicated system in many aspects. Specifically, the nested interrelationship between system inputs and outputs constitutes one of the significant challenges in system control design. Mostly, such a process is to be decoupled into several input/output pairings (loops, so that a single controller can be assigned for each loop. In the frame of this research, the Brain Emotional Learning Based Intelligent Controller (BELBIC forms the control structure for each decoupled loop. The paper’s main objective is to develop a parameterization technique for decoupling and control schemes, which ensures robust control behavior. In this regard, the novel optimization technique Bacterial Swarm Optimization (BSO is utilized for the minimization of summation of the integral time-weighted squared errors (ITSEs for all control loops. This optimization technique constitutes a hybrid between two techniques, which are the Particle Swarm and Bacterial Foraging algorithms. According to the simulation results, this hybridized technique ensures low mathematical burdens and high decoupling and control accuracy. Moreover, the behavior analysis of the proposed BELBIC shows a remarkable improvement in the time domain behavior and robustness over the conventional PID controller.

  5. Decoupling pipeline influences in soil resistivity measurements with finite element techniques

    Science.gov (United States)

    Deo, R. N.; Azoor, R. M.; Zhang, C.; Kodikara, J. K.

    2018-03-01

    Periodic inspection of pipeline conditions is an important asset management strategy conducted by water and sewer utilities for efficient and economical operations of their assets in field. The Level 1 pipeline condition assessment involving resistivity profiling along the pipeline right-of-way is a common technique for delineating pipe sections that might be installed in highly corrosive soil environment. However, the technique can suffer from significant perturbations arising from the buried pipe itself, resulting in errors in native soil characterisation. To address this problem, a finite element model was developed to investigate the degree to which pipes of different a) diameters, b) burial depths, and c) surface conditions (bare or coated) can influence in-situ soil resistivity measurements using Wenner methods. It was found that the greatest errors can arise when conducting measurements over a bare pipe with the array aligned parallel to the pipe. Depending upon the pipe surface conditions, in-situ resistivity measurements can either be underestimated or overestimated from true soil resistivities. Following results based on simulations and decoupling equations, a guiding framework for removing pipe influences in soil resistivity measurements were developed that can be easily used to perform corrections on measurements. The equations require simple a-prior information on the pipe diameter, burial depth, surface condition, and the array length and orientation used. Findings from this study have immediate application and is envisaged to be useful for critical civil infrastructure monitoring and assessment.

  6. Catalytic Decoupling of Quantum Information

    DEFF Research Database (Denmark)

    Majenz, Christian; Berta, Mario; Dupuis, Frédéric

    2017-01-01

    The decoupling technique is a fundamental tool in quantum information theory with applications ranging from quantum thermodynamics to quantum many body physics to the study of black hole radiation. In this work we introduce the notion of catalytic decoupling, that is, decoupling in the presence...... of an uncorrelated ancilla system. This removes a restriction on the standard notion of decoupling, which becomes important for structureless resources, and yields a tight characterization in terms of the max-mutual information. Catalytic decoupling naturally unifies various tasks like the erasure of correlations...

  7. Disturbance Decoupling in Dynamic Games

    NARCIS (Netherlands)

    van den Broek, W.A.; Schumacher, J.M.

    1999-01-01

    A theory for disturbance decoupling problems has been well developed in the area of geometric control theory. The aim of the present study is to introduce disturbance decoupling problems in a dynamic game context. For this purpose, techniques from geometric control theory are applied. Necessary and

  8. Title: Gully Erosion Mapping Using Remote Sensing Techniques in ...

    African Journals Online (AJOL)

    NdifelaniM

    Abstract. Gullies are large and deep erosion depressions or channels normally occurring in drainage ways. They are spectrally heterogeneous, making them difficult to map using pixel based classification technique. The advancement of remote sensing in terms of Geographic Object Based Image Analysis. (GEOBIA) ...

  9. Decoupling structure and metallogenesis

    International Nuclear Information System (INIS)

    Tong Hangshou

    1993-01-01

    The decoupling structure is, at present, a hot spot for the study in geoscience. A study on the decoupling structure is not only of great theoretical significance, but also of more economic importance. The author briefly discusses the study of the decoupling structure in terms of its present status, implication, characteristics, formation mechanism and theoretical significance, in addition, with emphasis on the expounding of the decoupling structure over endogenic metallic deposits such as oil and gas, coal, gold, silver, copper, lead, zinc and iron etc. At last reconsideration is made on the ore control theory of the decoupling structure to the ore control structure in the uranium ore field in South China. The author proposes a superficial idea in order to provide a basis of geological structures for expanding old mining areas, opening up new areas(bases), and prospecting for large and rich uranium deposits

  10. Isomorphism, Diffusion and Decoupling

    DEFF Research Database (Denmark)

    Boxenbaum, Eva; Jonsson, Stefan

    2017-01-01

    This chapter traces the evolution of the core theoretical constructs of isomorphism, decoupling and diffusion in organizational institutionalism. We first review the original theoretical formulations of these constructs and then examine their evolution in empirical research conducted over the past...

  11. Decoupling Responsible Management Education

    DEFF Research Database (Denmark)

    Rasche, Andreas; Gilbert, Dirk Ulrich

    stringency, (2) face overt or covert resistance against change processes, (3) are confronted with competing institutional pressures, and (4) perceive institutional demands as ambiguous. The discussion points to two implications. While decoupling may give rise to the illusion that responsible management...... education from organizational practices. We argue that schools may be unable to match rising institutional pressures to publicly commit to responsible management education with their internal capacity for change. Our analysis proposes that decoupling is likely if schools (1) are exposed to resource......Business schools increasingly aim to embed corporate responsibility, sustainability, and ethics into their curricular and extracurricular activities. This paper examines under what conditions business schools may decouple the structural effects of their engagement in responsible management...

  12. Title and title page.

    Science.gov (United States)

    Peh, W C G; Ng, K H

    2008-08-01

    The title gives the first impression of a scientific article, and should accurately convey to a reader what the whole article is about. A good title is short, informative and attractive. The title page provides information about the authors, their affiliations and the corresponding author's contact details.

  13. Optimal decoupling controllers revisited

    Czech Academy of Sciences Publication Activity Database

    Kučera, Vladimír

    2013-01-01

    Roč. 42, č. 1 (2013), s. 1-16 ISSN 0324-8569 R&D Projects: GA TA ČR(CZ) TE01020197 Institutional support: RVO:67985556 Keywords : linear systems * fractional representations * decoupling controller s * stabilizing controller s * optimal controller s Subject RIV: BC - Control Systems Theory

  14. Decoupling Responsible Management Education

    DEFF Research Database (Denmark)

    Rasche, Andreas; Gilbert, Dirk Ulrich

    2015-01-01

    This article examines under what conditions business schools may decouple the structural effects of their engagement in responsible management education from actual organizational practices. We argue that schools may be unable to match rising institutional pressures to publicly commit to responsi......This article examines under what conditions business schools may decouple the structural effects of their engagement in responsible management education from actual organizational practices. We argue that schools may be unable to match rising institutional pressures to publicly commit...... to responsible management education with their limited internal capacity for change. Our analysis proposes that decoupling is likely if schools (a) are exposed to resource stringency, (b) face overt or covert resistance against change processes, (c) are confronted with competing institutional pressures, and (d......) perceive institutional demands as ambiguous. We discuss two implications of this proposition. On one hand, decoupling can cause dissonant legitimacy perceptions, leading to cynicism around responsible management education within business schools. On the other hand, a temporary inconsistency between talk...

  15. Dynamic Temporal Decoupling

    NARCIS (Netherlands)

    Mountakis, K.S.; Klos, T.; Witteveen, C.

    2017-01-01

    Temporal decoupling is a method to distribute a temporal constraint problem over a number of actors, such that each actor can solve its own part of the problem. It then ensures that the partial solutions provided can be always merged to obtain a complete solution. This paper discusses static and

  16. DECOUPLER DESIGN FOR AN INTERACTING TANKS SYSTEM

    Directory of Open Access Journals (Sweden)

    Duraid F. Ahmed

    2013-05-01

    Full Text Available The mathematical model forthe two interacting tanks system was derived and the dynamic behavior of thissystem was studied by introducing a step change in inlet flow rate. In thispaper, the analysis of the interaction loops between the controlled variable(liquid level and manipulated variable (inlet flow rate was carried out usingthe relative gain array. Also decoupling technique is applied to eliminate theeffect this interaction by design suitable decouplers for the system. Theresults show that the gain of each loop is cut in half when the opposite loopis closed and the gain of other loop changes sign when the opposite loop isclosed. The decoupling method show that the liquid level of tank one isconstant when the second inlet flow changes and to keep the liquid level oftank two constant the first inlet flow must be changed.

  17. Decoupling Responsible Management Education

    DEFF Research Database (Denmark)

    Rasche, Andreas; Gilbert, Dirk Ulrich

    Business schools increasingly aim to embed corporate responsibility, sustainability, and ethics into their curricular and extracurricular activities. This paper examines under what conditions business schools may decouple the structural effects of their engagement in responsible management educat...... education is progressing, it is also possible that an inconsistency between talk and action can help schools to articulate ambitions for responsible management education, which, over time, inspire recoupling effects....

  18. Geometrical method of decoupling

    Directory of Open Access Journals (Sweden)

    C. Baumgarten

    2012-12-01

    Full Text Available The computation of tunes and matched beam distributions are essential steps in the analysis of circular accelerators. If certain symmetries—like midplane symmetry—are present, then it is possible to treat the betatron motion in the horizontal, the vertical plane, and (under certain circumstances the longitudinal motion separately using the well-known Courant-Snyder theory, or to apply transformations that have been described previously as, for instance, the method of Teng and Edwards. In a preceding paper, it has been shown that this method requires a modification for the treatment of isochronous cyclotrons with non-negligible space charge forces. Unfortunately, the modification was numerically not as stable as desired and it was still unclear, if the extension would work for all conceivable cases. Hence, a systematic derivation of a more general treatment seemed advisable. In a second paper, the author suggested the use of real Dirac matrices as basic tools for coupled linear optics and gave a straightforward recipe to decouple positive definite Hamiltonians with imaginary eigenvalues. In this article this method is generalized and simplified in order to formulate a straightforward method to decouple Hamiltonian matrices with eigenvalues on the real and the imaginary axis. The decoupling of symplectic matrices which are exponentials of such Hamiltonian matrices can be deduced from this in a few steps. It is shown that this algebraic decoupling is closely related to a geometric “decoupling” by the orthogonalization of the vectors E[over →], B[over →], and P[over →], which were introduced with the so-called “electromechanical equivalence.” A mathematical analysis of the problem can be traced down to the task of finding a structure-preserving block diagonalization of symplectic or Hamiltonian matrices. Structure preservation means in this context that the (sequence of transformations must be symplectic and hence canonical. When

  19. Gauge symmetry from decoupling

    Directory of Open Access Journals (Sweden)

    C. Wetterich

    2017-02-01

    Full Text Available Gauge symmetries emerge from a redundant description of the effective action for light degrees of freedom after the decoupling of heavy modes. This redundant description avoids the use of explicit constraints in configuration space. For non-linear constraints the gauge symmetries are non-linear. In a quantum field theory setting the gauge symmetries are local and can describe Yang–Mills theories or quantum gravity. We formulate gauge invariant fields that correspond to the non-linear light degrees of freedom. In the context of functional renormalization gauge symmetries can emerge if the flow generates or preserves large mass-like terms for the heavy degrees of freedom. They correspond to a particular form of gauge fixing terms in quantum field theories.

  20. Decoupling schemes for the SSC Collider

    International Nuclear Information System (INIS)

    Cai, Y.; Bourianoff, G.; Cole, B.; Meinke, R.; Peterson, J.; Pilat, F.; Stampke, S.; Syphers, M.; Talman, R.

    1993-05-01

    A decoupling system is designed for the SSC Collider. This system can accommodate three decoupling schemes by using 44 skew quadrupoles in the different configurations. Several decoupling schemes are studied and compared in this paper

  1. Decoupling schemes for the SCC Collider

    International Nuclear Information System (INIS)

    Cai, Y.; Bourianoff, G.; Cole, B.; Meinke, R.; Peterson, J.; Pilat, F.; Stampke, S.; Syphers, M.; Talman, R.

    1993-01-01

    A decoupling system is designed for the SSC Collider. This system can accommodate three decoupling schemes by using 44 skew quadrupoles in the different configurations. Several decoupling schemes are studied and compared in this paper

  2. Selective Regulator Decoupling and Organizations' Strategic Responses

    NARCIS (Netherlands)

    Heese, Jonas; Krishnan, Ranjani; Moers, Frank

    2016-01-01

    Organizations often respond to institutional pressures by symbolically adopting policies and procedures but decoupling them from actual practice. Literature has examined why organizations decouple from regulatory pressures. In this study, we argue that decoupling occurs within regulatory agencies

  3. Delayed Antiwindup Control Using a Decoupling Structure

    Directory of Open Access Journals (Sweden)

    Huawei Zhu

    2013-01-01

    Full Text Available This paper investigates the antiwindup (AW control problem for plants with input saturation. The AW compensator is not activated as soon as input saturation occurs as usual. A delayed decoupling structure is first proposed. Then, appropriate linear matrix inequalities (LMIs are developed to determine a plant-order AW compensator. Effectiveness of the presented AW technique is illustrated by a fighter aircraft model.

  4. Fast Automated Decoupling at RHIC

    CERN Document Server

    Beebe-Wang, Joanne

    2005-01-01

    Coupling correction is essential for the operational performance of RHIC. The independence of the transverse degrees of freedom makes diagnostics and tune control easier, and it is advantageous to operate an accelerator close to the coupling resonance to minimize nearby nonlinear sidebands. An automated decoupling application has been developed at RHIC for coupling correction during routine operations. The application decouples RHIC globally by minimizing the tune separation through finding the optimal settings of two orthogonal skew quadrupole families. The program provides options of automatic, semi-automatic and manual decoupling operations. It accesses tune information from all RHIC tune measurement systems: the PLL (Phase Lock Loop), the high frequency Schottky system, and the tune meter. It also supplies tune and skew quadrupole scans, finding the minimum tune separation, display the real time results and interface with the RHIC control system. We summarize the capabilities of the decoupling application...

  5. FRF decoupling of nonlinear systems

    Science.gov (United States)

    Kalaycıoğlu, Taner; Özgüven, H. Nevzat

    2018-03-01

    Structural decoupling problem, i.e. predicting dynamic behavior of a particular substructure from the knowledge of the dynamics of the coupled structure and the other substructure, has been well investigated for three decades and led to several decoupling methods. In spite of the inherent nonlinearities in a structural system in various forms such as clearances, friction and nonlinear stiffness, all decoupling studies are for linear systems. In this study, decoupling problem for nonlinear systems is addressed for the first time. A method, named as FRF Decoupling Method for Nonlinear Systems (FDM-NS), is proposed for calculating FRFs of a substructure decoupled from a coupled nonlinear structure where nonlinearity can be modeled as a single nonlinear element. Depending on where nonlinear element is, i.e., either in the known or unknown subsystem, or at the connection point, the formulation differs. The method requires relative displacement information between two end points of the nonlinear element, in addition to point and transfer FRFs at some points of the known subsystem. However, it is not necessary to excite the system from the unknown subsystem even when the nonlinear element is in that subsystem. The validation of FDM-NS is demonstrated with two different case studies using nonlinear lumped parameter systems. Finally, a nonlinear experimental test structure is used in order to show the real-life application and accuracy of FDM-NS.

  6. Robust dynamical decoupling for quantum computing and quantum memory.

    Science.gov (United States)

    Souza, Alexandre M; Alvarez, Gonzalo A; Suter, Dieter

    2011-06-17

    Dynamical decoupling (DD) is a popular technique for protecting qubits from the environment. However, unless special care is taken, experimental errors in the control pulses used in this technique can destroy the quantum information instead of preserving it. Here, we investigate techniques for making DD sequences robust against different types of experimental errors while retaining good decoupling efficiency in a fluctuating environment. We present experimental data from solid-state nuclear spin qubits and introduce a new DD sequence that is suitable for quantum computing and quantum memory.

  7. Dynamically Decoupled 13C Spins in Hyperpolarized Nanodiamond

    Science.gov (United States)

    Rej, Ewa; Gaebel, Torsten; Boele, Thomas; Waddington, David; Reilly, David

    The spin-spin relaxation time, T2, which determines how long a quantum state remains coherent, is an important factor for many applications ranging from MRI to quantum computing. A common technique used in quantum information technology to extend the T2, involves averaging out certain noise spectra via dynamical decoupling sequences. Depending on the nature of the noise in the system, specific sequences, such as CPMG, UDD or KDD, can be tailored to optimize T2. Here we combine hyperpolarization techniques and dynamical decoupling sequences to extend the T2 of 13C nuclear spins in nanodiamond by three orders of magnitude.

  8. A Randomized Controlled Trial of a Novel Self-Help Technique for Impulse Control Disorders: A Study on Nail-Biting

    Science.gov (United States)

    Moritz, Steffen; Treszl, Andras; Rufer, Michael

    2011-01-01

    Nail-biting is currently classified as an impulse control disorder not otherwise specified. Although seldom targeted as a primary symptom, nail-biting is often associated with somatic complications and decreased quality of life. The present study assessed the effectiveness of an innovative self-help technique, titled decoupling (DC). DC aims at…

  9. The Convergence Characteristic of the Fast Decoupled Load Flow ...

    African Journals Online (AJOL)

    A Fortran program is written using matrix sparsity for the inversion of the coefficient matrix and two aspects of the convergence characteristic of the fast decoupled load flow technique are investigated. These are, effects of the starting values and effects of R/X ratio of transmission lines. The analysis is based on computational ...

  10. 'Glocalization' versus Notions of Decoupling

    DEFF Research Database (Denmark)

    Jakobsen, Michael

    2011-01-01

    Discussing modes of political and/or economic decoupling in an era of economic globalization seems almost contradictory as the dominating keywords in the latter are increasing integration, interdependency and harmonization. For example, when looking towards the political realm it seems problematic...... to suggest that a nation-state can opt for a withdrawal from the global community in order to nurture its domestic potential. Likewise, when looking towards the economic realm, it seems even more problematic to suggest the possibility of a national economy withdrawing from the global economy, taking...... an increasing internationalization of domestic markets into account. Nonetheless, there is a discourse devoted to just that, namely whether or not to decouple economically and politically from the global community. The present article explores this discourse by first taking a critical look at the concept...

  11. The theory and practice of decoupling

    Energy Technology Data Exchange (ETDEWEB)

    Eto, J.; Stoft, S.; Belden, T.

    1994-01-01

    Decoupling revenues from sales is an important regulatory option under consideration by regulators seeking to transform utilities from sellers of a least-cost energy commodity to providers of least-cost energy services. This report examines decoupling from three perspectives. First, the authors consider threshold issues for decoupling, including characterization of the ratemaking practices addressed by decoupling which make incremental sales profitable to utilities, the role of rate case frequency in limiting the consequences of this incentive, and finally the existence of other incentives to sell electricity, which are not addressed by decoupling. Second, they examine the operation and performance of decoupling, including the mechanics of decoupling as a between-rate-case modification to the traditional ratemaking process, the ability of revenue-per-customer decoupling versus traditional ratemaking to recover nonfuel costs accurately, and a comparison of the profit implications of various decoupling approaches. Third, they review the rate impacts of decoupling for California`s electric utilities, which have had the longest experience with decoupling.

  12. Decoupling, situated cognition and immersion in art.

    Science.gov (United States)

    Reboul, Anne

    2015-09-01

    Situated cognition seems incompatible with strong decoupling, where representations are deployed in the absence of their targets and are not oriented toward physical action. Yet, in art consumption, the epitome of a strongly decoupled cognitive process, the artwork is a physical part of the environment and partly controls the perception of its target by the audience, leading to immersion. Hence, art consumption combines strong decoupling with situated cognition.

  13. Sound Radiation from an Elastically Restrained Plate Covered by an Acoustic Decoupling Layer

    Directory of Open Access Journals (Sweden)

    Gang Wang

    2015-01-01

    Full Text Available The sound radiation from elastically restrained plates covered by a decoupling layer is studied using the Spectrogeometric Method (SGM, which is a meshless and parametric modeling technique. By adopting the Rayleigh-Ritz procedure and the Rayleigh integral, a vibroacoustic coupling system is established. This model studies the situation when the plate is immersed in heavy fluid, such as water, in which the strong coupling between the structure and sound field should be fully considered. The influence of the boundary conditions on the radiated sound power and sound reduction provided by the decoupling layer based on the locally reacting model is studied. The nonuniform distributed decoupling layer is also studied to analyze the sound reduction effect. The sound intensity on the outer surface of the decoupling layer is investigated and tends to be uniform along the plate scale with increasing thickness of the decoupling layer.

  14. FAST AUTOMATED DECOUPLING AT RHIC

    International Nuclear Information System (INIS)

    BEEBE-WANG, J.J.

    2005-01-01

    Coupling correction is essential for the operational performance of RHIC. The independence of the transverse degrees of freedom makes diagnostics and tune control easier, and it is advantageous to operate an accelerator close to the coupling resonance to minimize nearby nonlinear sidebands. An automated coupling correction application iDQmini has been developed for RHIC routine operations. The application decouples RHIC globally by minimizing the tune separation through finding the optimal settings of two orthogonal skew quadrupole families. The program iDQmini provides options of automatic, semi-automatic and manual decoupling operations. It accesses tune information from all RHIC tune measurement systems: the PLL (phase lock loop), the high frequency Schottky system and the tune meter. It also supplies tune and skew quadrupole scans, finding the minimum tune separation, display the real time results and interface with the RHIC control system. We summarize the capabilities of the coupling correction application iDQmini, and discuss the operational protections incorporated in the program

  15. Disturbance Decoupling of Switched Linear Systems

    NARCIS (Netherlands)

    Yurtseven, E.; Heemels, W.P.M.H.; Camlibel, M.K.

    2010-01-01

    In this paper we consider disturbance decoupling problems for switched linear systems. We will provide necessary and sufficient conditions for three different versions of disturbance decoupling, which differ based on which signals are considered to be the disturbance. In the first version the

  16. Kinematically Decoupled Cores in Dwarf (Elliptical) Galaxies

    NARCIS (Netherlands)

    Toloba, E.; Peletier, R. F.; Guhathakurta, P.; van de Ven, G.; Boissier, S.; Boselli, A.; Brok, M. d.; Falcón-Barroso, J.; Hensler, G.; Janz, J.; Laurikainen, E.; Lisker, T.; Paudel, S.; Ryś, A.; Salo, H.

    An overview is given of what we know about the frequency of kinematically decoupled cores in dwarf elliptical galaxies. New observations show that kinematically decoupled cores happen just as often in dwarf elliptical as in ordinary early-type galaxies. This has important consequences for the

  17. Browse Title Index

    African Journals Online (AJOL)

    Items 101 - 136 of 136 ... Issue, Title. Vol 13, No 1 (2004), Taxation Of Financial Assets: Implications For Capital Market Development In Tanzania, Abstract. Emma C Isinika, Hamisi H Mwinyimvua. Vol 14, No 1 (2005), The application of management accounting techniques in decision-making in a developing country, Abstract.

  18. High Field In Vivo 13C Magnetic Resonance Spectroscopy of Brain by Random Radiofrequency Heteronuclear Decoupling and Data Sampling

    Science.gov (United States)

    Li, Ningzhi; Li, Shizhe; Shen, Jun

    2017-06-01

    In vivo 13C magnetic resonance spectroscopy (MRS) is a unique and effective tool for studying dynamic human brain metabolism and the cycling of neurotransmitters. One of the major technical challenges for in vivo 13C-MRS is the high radio frequency (RF) power necessary for heteronuclear decoupling. In the common practice of in vivo 13C-MRS, alkanyl carbons are detected in the spectra range of 10-65ppm. The amplitude of decoupling pulses has to be significantly greater than the large one-bond 1H-13C scalar coupling (1JCH=125-145 Hz). Two main proton decoupling methods have been developed: broadband stochastic decoupling and coherent composite or adiabatic pulse decoupling (e.g., WALTZ); the latter is widely used because of its efficiency and superb performance under inhomogeneous B1 field. Because the RF power required for proton decoupling increases quadratically with field strength, in vivo 13C-MRS using coherent decoupling is often limited to low magnetic fields (Food and Drug Administration (FDA). Alternately, carboxylic/amide carbons are coupled to protons via weak long-range 1H-13C scalar couplings, which can be decoupled using low RF power broadband stochastic decoupling. Recently, the carboxylic/amide 13C-MRS technique using low power random RF heteronuclear decoupling was safely applied to human brain studies at 7T. Here, we review the two major decoupling methods and the carboxylic/amide 13C-MRS with low power decoupling strategy. Further decreases in RF power deposition by frequency-domain windowing and time-domain random under-sampling are also discussed. Low RF power decoupling opens the possibility of performing in vivo 13C experiments of human brain at very high magnetic fields (such as 11.7T), where signal-to-noise ratio as well as spatial and temporal spectral resolution are more favorable than lower fields.

  19. Structural Decoupling and Disturbance Rejection in a Distillation Column

    DEFF Research Database (Denmark)

    Bahar, Mehrdad; Jantzen, Jan; Commault, C.

    1996-01-01

    Introduction, distillation column model, input-output decoupling, disturbance rejection, concluding remarks, references.......Introduction, distillation column model, input-output decoupling, disturbance rejection, concluding remarks, references....

  20. Brain Emotional Learning Based Intelligent Decoupler for Nonlinear Multi-Input Multi-Output Distillation Columns

    Directory of Open Access Journals (Sweden)

    M. H. El-Saify

    2017-01-01

    Full Text Available The distillation process is vital in many fields of chemical industries, such as the two-coupled distillation columns that are usually highly nonlinear Multi-Input Multi-Output (MIMO coupled processes. The control of MIMO process is usually implemented via a decentralized approach using a set of Single-Input Single-Output (SISO loop controllers. Decoupling the MIMO process into group of single loops requires proper input-output pairing and development of decoupling compensator unit. This paper proposes a novel intelligent decoupling approach for MIMO processes based on new MIMO brain emotional learning architecture. A MIMO architecture of Brain Emotional Learning Based Intelligent Controller (BELBIC is developed and applied as a decoupler for 4 input/4 output highly nonlinear coupled distillation columns process. Moreover, the performance of the proposed Brain Emotional Learning Based Intelligent Decoupler (BELBID is enhanced using Particle Swarm Optimization (PSO technique. The performance is compared with the PSO optimized steady state decoupling compensation matrix. Mathematical models of the distillation columns and the decouplers are built and tested in simulation environment by applying the same inputs. The results prove remarkable success of the BELBID in minimizing the loops interactions without degrading the output that every input has been paired with.

  1. Power decoupling method for single phase differential buck converter

    DEFF Research Database (Denmark)

    Yao, Wenli; Tang, Yi; Zhang, Xiaobin

    2015-01-01

    inverter to improve the dc link power quality, and an improved active power decoupling method is proposed to achieve ripple power reduction for both AC-DC and DC-AC conversions. The ripple energy storage is realized by the filter capacitors, which are connected between the output terminal and the negative...... generation technique is proposed to provide accurate ripple power compensation, and closed-loop controllers are also designed based on small signal models. The effectiveness of this power decoupling method is verified by detailed simulation studies as well as laboratory prototype experimental results....... dc bus. By properly controlling the differential mode voltage of the capacitors, it is possible to transfer desired energy between the DC port and AC port. The common mode voltage is controlled in such a way that the ripple power on the dc side will be reduced. Furthermore, an autonomous reference...

  2. Li-air batteries: Decouple to stabilize

    Science.gov (United States)

    Xu, Ji-Jing; Zhang, Xin-Bo

    2017-09-01

    The utilization of porous carbon cathodes in lithium-air batteries is hindered by their severe decomposition during battery cycling. Now, dual redox mediators are shown to decouple the complex electrochemical reactions at the cathode, avoiding cathode passivation and decomposition.

  3. Inventory classification based on decoupling points

    Directory of Open Access Journals (Sweden)

    Joakim Wikner

    2015-01-01

    Full Text Available The ideal state of continuous one-piece flow may never be achieved. Still the logistics manager can improve the flow by carefully positioning inventory to buffer against variations. Strategies such as lean, postponement, mass customization, and outsourcing all rely on strategic positioning of decoupling points to separate forecast-driven from customer-order-driven flows. Planning and scheduling of the flow are also based on classification of decoupling points as master scheduled or not. A comprehensive classification scheme for these types of decoupling points is introduced. The approach rests on identification of flows as being either demand based or supply based. The demand or supply is then combined with exogenous factors, classified as independent, or endogenous factors, classified as dependent. As a result, eight types of strategic as well as tactical decoupling points are identified resulting in a process-based framework for inventory classification that can be used for flow design.

  4. Tilted microstrip phased arrays with improved electromagnetic decoupling for ultrahigh-field magnetic resonance imaging.

    Science.gov (United States)

    Pang, Yong; Wu, Bing; Jiang, Xiaohua; Vigneron, Daniel B; Zhang, Xiaoliang

    2014-12-01

    One of the technical challenges in designing a dedicated transceiver radio frequency (RF) array for MR imaging in humans at ultrahigh magnetic fields is how to effectively decouple the resonant elements of the array. In this work, we propose a new approach using tilted microstrip array elements for improving the decoupling performance and potentially parallel imaging capability. To investigate and validate the proposed design technique, an 8-channel volume array with tilted straight-type microstrip elements was designed, capable for human imaging at the ultrahigh field of 7 Tesla. In this volume transceiver array, its electromagnetic decoupling behavior among resonant elements, RF field penetration to biological samples, and parallel imaging performance were studied through bench tests and in vivo MR imaging experiments. In this specific tilted element array design, decoupling among array elements changes with the tilted angle of the elements and the best decoupling can be achieved at certain tilted angle. In vivo human knee MR images were acquired using the tilted volume array at 7 Tesla for method validation. Results of this study demonstrated that the electromagnetic decoupling between array elements and the B1 field strength can be improved by using the tilted element method in microstrip RF coil array designs at the ultrahigh field of 7T.

  5. Apparatus for decoupled thermo-photocatalytic pollution control

    Science.gov (United States)

    Tabatabaie-Raissi, Ali; Muradov, Nazim Z.; Martin, Eric

    2003-04-22

    A new method for design and scale-up of photocatalytic and thermocatalytic processes is disclosed. The method is based on optimizing photoprocess energetics by decoupling of the process energy efficiency from the DRE for target contaminants. The technique is applicable to photo-thermocatalytic reactor design and scale-up. At low irradiance levels, the method is based on the implementation of low pressure drop biopolymeric and synthetic polymeric support for titanium dioxide and other band-gap media. At high irradiance levels, the method utilizes multifunctional metal oxide aerogels and other media within a novel rotating fluidized particle bed reactor.

  6. Hedge Funds and Risk-Decoupling

    DEFF Research Database (Denmark)

    Ringe, Wolf-Georg

    three perspectives to analyse the problems created by negative risk-decoupling: an agency costs approach, an analysis of information costs, and a perspective from corporate finance. It shows how risk-decoupling is a type of market behaviour that creates significant costs for market participants......, in particular existing shareholders and potential investors. The paper then develops regulatory responses, envisaged particularly for EU level lawmaking, but also raises underlying issues on a more general level. Whilst several proposed regulatory tools are rejected, the paper prefers a solution that uses...

  7. Decoupling tissue and cell scale stresses using embedded oil microdroplets

    Science.gov (United States)

    Shelton, Elijah; Serwane, Friedhelm; Mongera, Alessandro; Lucio, Adam; Campàs, Otger

    Embryonic development and organ morphogenesis require mechanical stresses to be patterned in space and time over length scales ranging from cellular to tissue level. While several approaches use 4D live-imaging to infer forces from the observed flow fields, few techniques allow direct measurements of stress in vivo and in situ. We use oil microdroplets injected in between cells as direct stress sensors. Through confocal imaging and custom software for high resolution 3D droplet surface reconstruction, we can directly measure the patterns of stress by looking at the deformations of the drop. This analysis allows us to decouple the stresses at the tissue scale from those generated at cellular scales by disentangling ellipsoidal drop deformation modes from higher order drop deformations. Using this technique we measure both tissue and cell scale stresses within aggregates of mesenchymal cells as well as within developing zebrafish embryonic tissues. The decoupling of mechanical stresses at cell and tissue scales makes our technique uniquely suited for understanding how tissue scale reorganizations emerge from cell scale interactions. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship.

  8. Decoupled tracking and thermal monitoring of non-stationary targets.

    Science.gov (United States)

    Tan, Kok Kiong; Zhang, Yi; Huang, Sunan; Wong, Yoke San; Lee, Tong Heng

    2009-10-01

    Fault diagnosis and predictive maintenance address pertinent economic issues relating to production systems as an efficient technique can continuously monitor key health parameters and trigger alerts when critical changes in these variables are detected, before they lead to system failures and production shutdowns. In this paper, we present a decoupled tracking and thermal monitoring system which can be used on non-stationary targets of closed systems such as machine tools. There are three main contributions from the paper. First, a vision component is developed to track moving targets under a monitor. Image processing techniques are used to resolve the target location to be tracked. Thus, the system is decoupled and applicable to closed systems without the need for a physical integration. Second, an infrared temperature sensor with a built-in laser for locating the measurement spot is deployed for non-contact temperature measurement of the moving target. Third, a predictive motion control system holds the thermal sensor and follows the moving target efficiently to enable continuous temperature measurement and monitoring.

  9. High Field In vivo13C Magnetic Resonance Spectroscopy of Brain by Random Radiofrequency Heteronuclear Decoupling and Data Undersampling

    Directory of Open Access Journals (Sweden)

    Ningzhi Li

    2017-06-01

    Full Text Available In vivo13C magnetic resonance spectroscopy (MRS is a unique and effective tool for studying dynamic human brain metabolism and the cycling of neurotransmitters. One of the major technical challenges for in vivo13C-MRS is the high radio frequency (RF power necessary for heteronuclear decoupling. In the common practice of in vivo13C-MRS, alkanyl carbons are detected in the spectra range of 10–65 ppm. The amplitude of decoupling pulses has to be significantly greater than the large one-bond 1H-13C scalar coupling (1JCH = 125–145 Hz. Two main proton decoupling methods have been developed: broadband stochastic decoupling and coherent composite or adiabatic pulse decoupling (e.g., WALTZ; the latter is widely used because of its efficiency and superb performance under inhomogeneous B1 field. Because the RF power required for proton decoupling increases quadratically with field strength, in vivo13C-MRS using coherent decoupling is often limited to low magnetic fields [<=4 Tesla (T] to keep the local and averaged specific absorption rate (SAR under the safety guidelines established by the International Electrotechnical Commission (IEC and the US Food and Drug Administration (FDA. Alternately, carboxylic/amide carbons are coupled to protons via weak long-range 1H-13C scalar couplings, which can be decoupled using low RF power broadband stochastic decoupling. Recently, the carboxylic/amide 13C-MRS technique using low power random RF heteronuclear decoupling was safely applied to human brain studies at 7T. Here, we review the two major decoupling methods and the carboxylic/amide 13C-MRS with low power decoupling strategy. Further decreases in RF power deposition by frequency-domain windowing and time-domain random under-sampling are also discussed. Low RF power decoupling opens the possibility of performing in vivo13C experiments of human brain at very high magnetic fields (such as 11.7T, where signal-to-noise ratio as well as spatial and temporal

  10. Decoupling and Decomposition Analysis of Carbon Emissions from Industry: A Case Study from China

    Directory of Open Access Journals (Sweden)

    Qiang Wang

    2016-10-01

    Full Text Available China has overtaken the United States as the world’s largest producer of carbon dioxide, with industrial carbon emissions (ICE accounting for approximately 65% of the country’s total emissions. Understanding the ICE decoupling patterns and factors influencing the decoupling status is a prerequisite for balancing economic growth and carbon emissions. This paper provides an overview of ICE based on decoupling elasticity and the Tapio decoupling model. Furthermore, the study identifies the factors contributing to ICE changes in China, using the Kaya identity and Log Mean Divisia Index (LMDI techniques. Based on the effects and contributions of ICE, we close with a number of recommendations. The results revealed a significant upward trend of ICE during the study period 1994 to 2013, with a total amount of 11,147 million tons. Analyzing the decoupling relationship indicates that “weak decoupling” and “expansive decoupling” were the main states during the study period. The decomposition analysis showed that per capita wealth associated with industrial outputs and energy intensity are the main driving force of ICE, while energy intensity of industrial output and energy structure are major determinants for ICE reduction. The largest contributing cumulative effect to ICE is per capita wealth, at 1.23 in 2013. This factor is followed by energy intensity, with a contributing cumulative effect of −0.32. The cumulative effects of energy structure and population are relatively small, at 0.01 and 0.08, respectively.

  11. Hedge Funds and Risk-Decoupling

    DEFF Research Database (Denmark)

    Ringe, Georg

    2013-01-01

    categories of corporate law, financial derivatives, and risk management. This Article is only concerned with the first of these two forms— negative decoupling.9 It looks at the various forms of negative riskdecoupling strategies and tries to shed light on their overall desirability. Three distinct...... theoretical perspectives are used as an analytical framework to examine the vast challenges of risk-decoupling: (1) a classical agency costs approach; (2) an information costs perspective; and (3) a view from corporate finance. This Article argues that shareholders with hedged risk exposure do not correspond...... to the traditional market expectations of shareholders. Based on the insight developed from these policy perspectives, this article develops regulatory reform proposals, particularly with regard to the EU context....

  12. Quadratic dynamical decoupling with nonuniform error suppression

    International Nuclear Information System (INIS)

    Quiroz, Gregory; Lidar, Daniel A.

    2011-01-01

    We analyze numerically the performance of the near-optimal quadratic dynamical decoupling (QDD) single-qubit decoherence errors suppression method [J. West et al., Phys. Rev. Lett. 104, 130501 (2010)]. The QDD sequence is formed by nesting two optimal Uhrig dynamical decoupling sequences for two orthogonal axes, comprising N 1 and N 2 pulses, respectively. Varying these numbers, we study the decoherence suppression properties of QDD directly by isolating the errors associated with each system basis operator present in the system-bath interaction Hamiltonian. Each individual error scales with the lowest order of the Dyson series, therefore immediately yielding the order of decoherence suppression. We show that the error suppression properties of QDD are dependent upon the parities of N 1 and N 2 , and near-optimal performance is achieved for general single-qubit interactions when N 1 =N 2 .

  13. Power decoupling with autonomous reference generation for single-phase differential inverters

    DEFF Research Database (Denmark)

    Yao, Wenli; Zhang, Xiaobin; Wang, Xiongfei

    2015-01-01

    The second-harmonic power ripple in single-phase inverter may introduce the issue of low reliability and low power density. In order to replace the bulky dc-link capacitor, an alternative approach is to use active power decoupling so that the ripple power can be diverted into other energy storages...... are used for realizing an improved power decoupling control, capacitor voltage and inductor current regulation. By substituting the corresponding parameter into unified model, the proposed control loop can be applied to different inverter types (Buck, Buck-Boost and Boost). Finally, detailed laboratory....... However, the performance of existing active power decoupling methods depends heavily on certain control references, which unfortunately are parameter dependent. In this paper an autonomous reference generation technique is proposed for single phase differential inverter without relying on the system...

  14. Decoupling mechanisms-paying for conservation

    Energy Technology Data Exchange (ETDEWEB)

    Cross, P.S.

    1993-07-15

    In 1988, the National Association of Regulatory Utility Commissioners issued a policy statement that said [open quotes]ratemaking practices should align utilities' pursuit of profit with least-cost planning.[close quotes] This policy coincided with then-current thinkingg at a number of state commissions about the much-touted goal of encouraging utilities to invest in conservation, or demand-side management (DSM) programs, rather than in generating resources to meet system load requirements. Besides utility concerns about recovering conservation program investments, regulators also notices a built-in [open quotes]disincentive[close quotes] to investment in the traditional ratemaking format: If profit is tied to sales, then utilities will always shy away from aggressively promoting conservation. Or so the thinkin went. [open quotes]Decoupling mechanisms[close quotes] were born to remove this disincentive. A number of states have implemented these mechanisms, while several others are investigating the issue. One chief drawback of the mechanisms is that if sales go down, rates go up to cover the shortfall. (Of course, rates go down if sales exceed forecasted levels.) A major problem has been that rate increases have occurred at exactly the wrong time, during economic slowdowns when utilities are struggling to retain price-sensitive customers and residential ratepayers are least likely to bear with quiet stoicism the burden placed on family budgets. Decoupling is seen by some as a step backwards in the move to competitive regulatory reforms that seek to encourage utilities to behave like free-market companies. Indeed, the newest decoupling mechanisms face serious challenge.

  15. Title IX Resource Guide

    Science.gov (United States)

    Office for Civil Rights, US Department of Education, 2015

    2015-01-01

    Title IX of the Education Amendments of 1972 (Title IX) prohibits discrimination based on sex in education programs and activities in federally funded schools at all levels. If any part of a school district or college receives any Federal funds for any purpose, all of the operations of the district or college are covered by Title IX. The essence…

  16. Open string decoupling and tachyon condensation

    International Nuclear Information System (INIS)

    Chalmers, G.

    2001-01-01

    The amplitudes in perturbative open string theory are examined as functions of the tachyon condensate parameter. The boundary state formalism demonstrates the decoupling of the open string modes at the non-perturbative minima of the tachyon potential via a degeneration of open world-sheets and identifies an independence of the coupling constants g s and g YM at general values of the tachyon condensate. The closed sector is generated at the quantum level; it is also generated at the classical level through the condensation of the propagating open string modes on the D-brane degrees of freedom.

  17. Global Decoupling on the RHIC Ramp

    CERN Document Server

    Luo, Yun; Della Penna, Al; Fischer, Wolfram; Laster, Jonathan S; Marusic, Al; Pilat, Fulvia Caterina; Roser, Thomas; Trbojevic, Dejan

    2005-01-01

    The global betatron decoupling on the ramp is an important issue for the operation of the Relativistic Heavy Ion Collider (RHIC). In the polarized proton run, the betatron tunes are required to keep almost constant on the ramp to avoid spin resonance line crossing and the beam polarization loss. Some possible correction schemes on the ramp, like three-ramp correction, the coupling amplitude modulation and the coupling phase modulaxtion, have been found. The principles of these schemes are shortly reviewed and compared. Operational results of their applications on the RHIC ramps are given.

  18. Hedge Funds and Risk-Decoupling

    DEFF Research Database (Denmark)

    Ringe, Georg

    2013-01-01

    The law must remain adaptive and responsive to the constantly changing challenges of our society and our business life. One of the most pressing challenges of the past years is the emergence of alternative investment funds, in particular hedge funds, which masterfully exploit the traditional...... theoretical perspectives are used as an analytical framework to examine the vast challenges of risk-decoupling: (1) a classical agency costs approach; (2) an information costs perspective; and (3) a view from corporate finance. This Article argues that shareholders with hedged risk exposure do not correspond...

  19. Optimized dynamical decoupling in a model quantum memory.

    Science.gov (United States)

    Biercuk, Michael J; Uys, Hermann; VanDevender, Aaron P; Shiga, Nobuyasu; Itano, Wayne M; Bollinger, John J

    2009-04-23

    Any quantum system, such as those used in quantum information or magnetic resonance, is subject to random phase errors that can dramatically affect the fidelity of a desired quantum operation or measurement. In the context of quantum information, quantum error correction techniques have been developed to correct these errors, but resource requirements are extraordinary. The realization of a physically tractable quantum information system will therefore be facilitated if qubit (quantum bit) error rates are far below the so-called fault-tolerance error threshold, predicted to be of the order of 10(-3)-10(-6). The need to realize such low error rates motivates a search for alternative strategies to suppress dephasing in quantum systems. Here we experimentally demonstrate massive suppression of qubit error rates by the application of optimized dynamical decoupling pulse sequences, using a model quantum system capable of simulating a variety of qubit technologies. We demonstrate an analytically derived pulse sequence, UDD, and find novel sequences through active, real-time experimental feedback. The latter sequences are tailored to maximize error suppression without the need for a priori knowledge of the ambient noise environment, and are capable of suppressing errors by orders of magnitude compared to other existing sequences (including the benchmark multi-pulse spin echo). Our work includes the extension of a treatment to predict qubit decoherence under realistic conditions, yielding strong agreement between experimental data and theory for arbitrary pulse sequences incorporating nonidealized control pulses. These results demonstrate the robustness of qubit memory error suppression through dynamical decoupling techniques across a variety of qubit technologies.

  20. Kinematic Analysis of a Partially Decoupled 3-DOF Parallel Wrist

    Directory of Open Access Journals (Sweden)

    Fan Zhang

    2015-01-01

    Full Text Available A unique spherical parallel wrist with three partially decoupled rotational degrees of freedom (DOFs is introduced in this paper. The mechanism has the significant advantages of few singularities and simple partially decoupled kinematics. A modified parallel wrist is optimized to have the least link interference workspace. Finally, the decoupled motion is studied in detail to exhibit the kinematic performance of the mechanism.

  1. Decoupled Multicamera Sensing for Flexible View Generation

    Directory of Open Access Journals (Sweden)

    Vivek K. Singh

    2016-01-01

    Full Text Available Any sensing paradigm has three important components, namely, the actor, the sensor, and the environment. Traditionally, the sensors have been attached to either the actor or the environment. This restricts the kind of sensing that can be undertaken. We study a newer decoupled sensing paradigm, which separates the sensors from both the actor and the environment and tremendously increases the flexibility with which the scenes can be viewed. For example, instead of showing just one view, “how the environment sees the actor” or “how the actor sees the environment,” a viewer can choose to see either one or both of these views and even choose to see the scene from any desired position in any desired direction. We describe a methodology using mobile autonomous sensors to undertake such decoupled sensing and study the feasible number as well as the placement of such sensors. Also, we describe how the sensors can coordinate their movements around a moving actor so as to continue capturing the required views with minimum overall cost. The practical results obtained demonstrate the viability of the proposed approach.

  2. Fast Dynamical Decoupling of the Mølmer-Sørensen Entangling Gate

    Science.gov (United States)

    Manovitz, Tom; Rotem, Amit; Shaniv, Ravid; Cohen, Itsik; Shapira, Yotam; Akerman, Nitzan; Retzker, Alex; Ozeri, Roee

    2017-12-01

    Engineering entanglement between quantum systems often involves coupling through a bosonic mediator, which should be disentangled from the systems at the operation's end. The quality of such an operation is generally limited by environmental and control noise. One of the prime techniques for suppressing noise is by dynamical decoupling, where one actively applies pulses at a rate that is faster than the typical time scale of the noise. However, for boson-mediated gates, current dynamical decoupling schemes require executing the pulses only when the boson and the quantum systems are disentangled. This restriction implies an increase of the gate time by a factor of √{N }, with N being the number of pulses applied. Here we propose and realize a method that enables dynamical decoupling in a boson-mediated system where the pulses can be applied while spin-boson entanglement persists, resulting in an increase in time that is at most a factor of π /2 , independently of the number of pulses applied. We experimentally demonstrate the robustness of our entangling gate with fast dynamical decoupling to σz noise using ions in a Paul trap.

  3. Decoupling Novelty from R&D

    DEFF Research Database (Denmark)

    Grimpe, Christoph; Chatterjee, Rabikar; Bhargava, Mukesh

    and services. We argue that marketing innovation may significantly increase a firm’s innovation performance. Further, we posit that investments in marketing and technological innovation are substitutes because of resource constraints and a compounding of risks. We propose that the substitutive relationship......Conventional wisdom ties successful innovation primarily to technological R&D. In this paper, we introduce the concept of marketing innovation in which novelty originates separately from the innovative design, packaging, pricing, promotion, and/or distribution of technologically unchanged products...... is especially pronounced in small firms and high-tech industries. Based on the analysis of a dataset of 866 firms from a diverse set of industries in Germany, we find empirical support for our hypotheses, suggesting that novelty can in fact be decoupled from R&D...

  4. A Decoupled Approach for Flight Control

    Directory of Open Access Journals (Sweden)

    Espen Oland

    2016-10-01

    Full Text Available A decoupling method for flight control is presented that greatly simplifies the controller design. By approximating the higher order derivatives of the angle of attack and sideslip, it enables a rotation controller and a speed controller to be derived independently of each other, and thus gives access to a vast number of controller solutions derived for general classes of rotational and translational systems. For rotational control, a quaternion-based sliding surface controller is derived to align the wind frame in a desired direction, and using standard Lyapunov methods an airspeed controller is derived to ensure that an unmanned aerial vehicle moves with a positive airspeed. Simulations validate the potential of the proposed method, where the unmanned aerial vehicle is able to obtain leveled flight and move in a desired direction with a desired airspeed.

  5. Decoupling from international food safety standards

    DEFF Research Database (Denmark)

    Mercado, Geovana; Hjortsø, Carsten Nico; Honig, Benson

    2018-01-01

    in the market. These include: (1) partial adoption of formal rules; (2) selective adoption of convenient rules; and (3) ceremonial adoption to avoid compliance. Decoupling strategies allow local actors to largely disregard the formal food safety regulations while accommodating traditional cultural practices......Although inclusion in formal value chains extends the prospect of improving the livelihoods of rural small-scale producers, such a step is often contingent on compliance with internationally-promoted food safety standards. Limited research has addressed the challenges this represents for small...... rural producers who, grounded in culturally-embedded food safety conceptions, face difficulties in complying. We address this gap here through a multiple case study involving four public school feeding programs that source meals from local rural providers in the Bolivian Altiplan. Institutional logics...

  6. Atomic Quadrupole Moment Measurement Using Dynamic Decoupling.

    Science.gov (United States)

    Shaniv, R; Akerman, N; Ozeri, R

    2016-04-08

    We present a method that uses dynamic decoupling of a multilevel quantum probe to distinguish small frequency shifts that depend on m_{j}^{2}, where m_{j}^{2} is the angular momentum of level |j⟩ along the quantization axis, from large noisy shifts that are linear in m_{j}, such as those due to magnetic field noise. Using this method we measured the electric-quadrupole moment of the 4D_{5/2} level in ^{88}Sr^{+} to be 2.973_{-0.033}^{+0.026}ea_{0}^{2}. Our measurement improves the uncertainty of this value by an order of magnitude and thus helps mitigate an important systematic uncertainty in ^{88}Sr^{+} based optical atomic clocks and verifies complicated many-body quantum calculations.

  7. Decoupling of CO2 emissions and GDP

    Directory of Open Access Journals (Sweden)

    Yves Rocha de Salles Lima

    2016-12-01

    Full Text Available The objetive of this work is to analyze the variation of CO2 emissions and GDP per capita throughout the years and identify the possible interaction between them. For this purpose, data from the International Energy Agency was collected on two countries, Brazil and the one with the highest GDP worldwide, the United States. Thus, the results showed that CO2 emissions have been following the country’s economic growth for many years. However, these two indicators have started to decouple in the US in 2007 while in Brazil the same happened in 2011. Furthermore, projections for CO2 emissions are made until 2040, considering 6 probable scenarios. These projections showed that even if the oil price decreases, the emissions will not be significantly affected as long as the economic growth does not decelerate.

  8. Load flow analysis using decoupled fuzzy load flow under critical ...

    African Journals Online (AJOL)

    user

    The conventional load flow methods like Newton-Raphson load flow (NRLF), Fast Decoupled load flow (FDLF) provide poor performance under critical conditions such as high R/X ratio, heavily loading condition etc. Exploiting the decoupling properties of power system, reliable fuzzy load flow is developed to overcome the ...

  9. Optimal Temporal Decoupling in Task Scheduling with Preferences

    NARCIS (Netherlands)

    Endhoven, L.; Klos, T.B.; Witteveen, C.

    2011-01-01

    Multi-agent planning and scheduling concerns finding a joint plan to achieve some set of common goals with several independent agents each aiming to find a plan or schedule for their part of the goals. To avoid conflicts in these individual plans or schedules decoupling is used. Such a decoupling

  10. Dwarf elliptical galaxies with kinematically decoupled cores

    Science.gov (United States)

    De Rijcke, S.; Dejonghe, H.; Zeilinger, W. W.; Hau, G. K. T.

    2004-10-01

    We present, for the first time, photometric and kinematical evidence, obtained with FORS2 on the VLT, for the existence of kinematically decoupled cores (KDCs) in two dwarf elliptical galaxies; FS76 in the NGC 5044 group and FS373 in the NGC 3258 group. Both kinematically peculiar subcomponents rotate in the same sense as the main body of their host galaxy but betray their presence by a pronounced bump in the rotation velocity profiles at a radius of about 1''. The KDC in FS76 rotates at 10 ± 3 km s-1, with the host galaxy rotating at 15 ± 6 km s-1; the KDC in FS373 has a rotation velocity of 6 ± 2 km s-1 while the galaxy itself rotates at 20 ± 5 km s-1. FS373 has a very complex rotation velocity profile with the velocity changing sign at 1.5 Re. The velocity and velocity dispersion profiles of FS76 are asymmetric at larger radii. This could be caused by a past gravitational interaction with the giant elliptical NGC 5044, which is at a projected distance of 50 kpc. We argue that these decoupled cores are most likely not produced by mergers in a group or cluster environment because of the prohibitively large relative velocities. A plausible alternative is offered by flyby interactions between a dwarf elliptical or its disky progenitor and a massive galaxy. The tidal forces during an interaction at the relative velocities and impact parameters typical for a group environment exert a torque on the dwarf galaxy that, according to analytical estimates, transfers enough angular momentum to its stellar envelope to explain the observed peculiar kinematics.

  11. Radiation transport out from the reactor core: to decouple or not to decouple

    Directory of Open Access Journals (Sweden)

    Burn Kenneth W.

    2017-01-01

    Full Text Available In the framework of the extension of the lifetime of currently operating reactors as well as of issues connected to decommissioning, accurate calculations of neutron and gamma responses outside the reactor core are increasingly being sought. Recently Monte Carlo calculations have been extended to provide a deep penetration capability incorporated within the eigenvalue calculation. This allows, in principle, neutron and gamma ray responses quite far outside the fissile region to be calculated within the same source-iteration scheme employed to define the neutronic responses in the fissile zone. In this paper, the new algorithm is compared to the classic decoupled approach - an eigenvalue calculation followed by a fixed source one - with the point of decoupling chosen as the fission sites. Two contrasting sample problems are discussed: a small fast research reactor and a large GEN-III Pressurized Water Reactor. The latter problem highlights the role of superhistories in maintaining the fundamental mode.

  12. Robust Power Decoupling Control Scheme for DC Side Split Decoupling Capacitor Circuit with Mismatched Capacitance in Single Phase System

    DEFF Research Database (Denmark)

    Yao, Wenli; Loh, Poh Chiang; Tang, Yi

    2016-01-01

    imperfections when storage mismatch occurs, which may break the standard requirement such as IEEE 1547. As a consequence, a robust control scheme is then proposed for half-bridge circuit, which realized power decoupling by generating second order harmonic voltage on the split dc decoupling capacitor instead...

  13. Title to mining properties

    International Nuclear Information System (INIS)

    Crouch, K.M.

    1976-01-01

    The requirements of the law which must be met in order to create title to an unpatented mining claim and the procedures which should be followed when an attempt is made to determine the title to the claim is acceptable are reviewed

  14. Browse Title Index

    African Journals Online (AJOL)

    Browse Title Index. Journal Home > Advanced Search > Browse Title Index. Log in or Register to get access to full text downloads. ... Vol 2, No 1 (1978), Weakly Nonlinear Waves with Slowly-Varying Speed, Abstract PDF. SC Chikwendu. Vol 33, No 2 (2014), Web Portal Usability among Nigerian University Students: A Case ...

  15. Synthetic clock transitions via continuous dynamical decoupling

    Science.gov (United States)

    Trypogeorgos, D.; Valdés-Curiel, A.; Lundblad, N.; Spielman, I. B.

    2018-01-01

    Decoherence of quantum systems due to uncontrolled fluctuations of the environment presents fundamental obstacles in quantum science. Clock transitions which are insensitive to such fluctuations are used to improve coherence, however, they are not present in all systems or for arbitrary system parameters. Here we create a trio of synthetic clock transitions using continuous dynamical decoupling in a spin-1 Bose-Einstein condensate in which we observe a reduction of sensitivity to magnetic-field noise of up to four orders of magnitude; this work complements the parallel work by Anderson et al. [R. P. Anderson et al., following paper, Phys. Rev. A 97, 013408 (2018), 10.1103/PhysRevA.97.013408]. In addition, using a concatenated scheme, we demonstrate suppression of sensitivity to fluctuations in our control fields. These field-insensitive states represent an ideal foundation for the next generation of cold-atom experiments focused on fragile many-body phases relevant to quantum magnetism, artificial gauge fields, and topological matter.

  16. Homosexuals and Title VII

    Science.gov (United States)

    Rivera, Juan R.; Galvan, Richard J.

    1975-01-01

    A method of dealing with the problems of discrimination against homosexuals in private employment through the application of Title VII of the Civil Rights Act of 1964 is discussed. The scope of the paper is limited to male homosexuals. (LBH)

  17. Browse Title Index

    African Journals Online (AJOL)

    Issue, Title. Vol 5, No 1 (2006), Zidovudine-cyclodextrin inclusion complex and its permeability across rat stomach and intestinal compartments, Abstract. JO Onah, EO Adagazu. 101 - 101 of 101 Items, << < 1 2 3 ...

  18. Browse Title Index

    African Journals Online (AJOL)

    Items 801 - 850 of 1007 ... Issue, Title. Vol 15, No 2 (2001), SOLID-PHASE PEPTIDE SYNTHESIS OF ISOTOCIN WITH AMIDE OF ASPARAGINE PROTECTED WITH 1-TETRALINYL. TRIFLUOROMETHANESULPHONIC ACID (TFMSA) DEPROTECTION, CLEAVAGE AND AIR OXIDATION OF MERCAPTO GROUPS TO ...

  19. Decoupled Closed-Form Solution for Humanoid Lower Limb Kinematics

    OpenAIRE

    Alejandro Said; Ernesto Rodriguez-Leal; Rogelio Soto; J. L. Gordillo; Leonardo Garrido

    2015-01-01

    This paper presents an explicit, omnidirectional, analytical, and decoupled closed-form solution for the lower limb kinematics of the humanoid robot NAO. The paper starts by decoupling the position and orientation analysis from the overall Denavit-Hartenberg (DH) transformation matrices. Here, the joint activation sequence for the DH matrices is based on the geometry of a triangle. Furthermore, the implementation of a forward and a reversed kinematic analysis for the support and swing phase e...

  20. A Fully Symmetric and Completely Decoupled MEMS-SOI Gyroscope

    OpenAIRE

    Abdelhameed SHARAF; Sherif SEDKY; Mohamed SERRY; Amro ELSHURAFA; Mahmoud ASHOUR; S. E.-D. HABIB

    2011-01-01

    This paper introduces a novel MEMS gyroscope that is capable of exciting the drive mode differentially. The structure also decouples the drive and sense modes via an intermediate mass and decoupling beams. Both drive and sense modes are fully differential enabling control over the zero-rate-output for the former and maximizing output sensitivity using a bridge circuit for the latter. Further, the structure is fully symmetric about the x- and y- axes which results in minimizing the temperature...

  1. Dynamical-Decoupling-Based Quantum Sensing: Floquet Spectroscopy

    Directory of Open Access Journals (Sweden)

    J. E. Lang

    2015-10-01

    Full Text Available Sensing the internal dynamics of individual nuclear spins or clusters of nuclear spins has recently become possible by observing the coherence decay of a nearby electronic spin: the weak magnetic noise is amplified by a periodic, multipulse decoupling sequence. However, it remains challenging to robustly infer underlying atomic-scale structure from decoherence traces in all but the simplest cases. We introduce Floquet spectroscopy as a versatile paradigm for analysis of these experiments and argue that it offers a number of general advantages. In particular, this technique generalizes to more complex situations, offering physical insight in regimes of many-body dynamics, strong coupling, and pulses of finite duration. As there is no requirement for resonant driving, the proposed spectroscopic approach permits physical interpretation of striking, but overlooked, coherence decay features in terms of the form of the avoided crossings of the underlying quasienergy eigenspectrum. This is exemplified by a set of “diamond-shaped” features arising for transverse-field scans in the case of single-spin sensing by nitrogen-vacancy centers in diamond. We also investigate applications for donors in silicon, showing that the resulting tunable interaction strengths offer highly promising future sensors.

  2. Decoupling - past trends and prospects for the future[Decoupling of economic growth and environmental impacts

    Energy Technology Data Exchange (ETDEWEB)

    Azar, Christian; Holmberg, John; Karlsson, Sten [Chalmers Univ. of Tech., Goeteborg (SE). Physical Resource Theory] [and others

    2002-05-01

    There are widespread demands in society for a dematerialization or decoupling of economic growth from environmental impact. Calls are being made for eco-efficiency and/or an improvement of resource efficiency by a factor of 10. At the same time, some analysts claim there is an environmental Kuznet's curve that supposedly implies a fall in environmental pressure, as we get richer. An improvement in the environmental situation has already been observed in many cases, but there are also many areas where the situation is deteriorating. The purpose of this report is to summarize some key trends of energy and material use over time in both developing and developed countries. We have focused on Sweden, the EU, Japan and the USA as well as China, India and Brazil. The main findings in this paper can be summarized as follows: Absolute emissions of CO{sub 2} have been increasing in most countries and periods studied. Some countries have experienced periods with constant or even falling emissions, but this is the exception rather than the rule, and it has been triggered by oil crises or economic recessions. In order to stabilize atmospheric CO{sub 2} concentrations, CO{sub 2} emissions have to be decoupled much more rapidly than has been the case in the past, and it is extremely unlikely that this will happen by itself. There was some decoupling of CO{sub 2} emissions from GDP in the major economies of the world from 1970 to 1998 in the EU, Japan and the US as well as in some major developing countries such as China, although India actually increased its emissions over GDP by 1.4 per cent/yr over this period. The drop in CO{sub 2} intensity has been prompted by some decoupling of energy from GDP and CO{sub 2} from energy, the latter being a consequence of an increased use of natural gas and nuclear power. In the South, fossil CO 2 per energy tends to increase from rather low levels. With industrialization, the proportion of biomass drops and the proportion of fossil

  3. Coupled vs. decoupled boundary layers in VOCALS-REx

    Directory of Open Access Journals (Sweden)

    C. R. Jones

    2011-07-01

    Full Text Available We analyze the extent of subtropical stratocumulus-capped boundary layer decoupling and its relation to other boundary-layer characteristics and forcings using aircraft observations from VOCALS-REx along a swath of the subtropical southeast Pacific Ocean running west 1600 km from the coast of Northern Chile. We develop two complementary and consistent measures of decoupling. The first is based on boundary layer moisture and temperature stratification in flight profiles from near the surface to above the capping inversion, and the second is based the difference between the lifted condensation level (LCL and a mean lidar-derived cloud base measured on flight legs at 150 m altitude. Most flights took place during early-mid morning, well before the peak in insolation-induced decoupling.

    We find that the boundary layer is typically shallower, drier, and well mixed near the shore, and tends to deepen, decouple, and produce more drizzle further offshore to the west. Decoupling is strongly correlated to the "mixed layer cloud thickness", defined as the difference between the capping inversion height and the LCL; other factors such as wind speed, cloud droplet concentration, and inversion thermodynamic jumps have little additional explanatory power. The results are broadly consistent with the deepening-warming theory of decoupling.

    In the deeper boundary layers observed well offshore, there was frequently nearly 100 % boundary-layer cloud cover despite pronounced decoupling. The cloud cover was more strongly correlated to a κ parameter related to the inversion jumps of humidity and temperature, though the exact functional relation is slightly different than found in prior large-eddy simulation studies.

  4. Optimal control of decoupling point with deteriorating items

    Directory of Open Access Journals (Sweden)

    Kuan Yang

    2014-10-01

    Full Text Available Purpose: The aim of this paper is to develop a dynamic model to simultaneously determine the optimal position of the decoupling point and the optimal path of the production rate as well as the inventory level in a supply chain. With the objective to minimize the total cost of the deviation from the target setting, the closed forms of the optimal solution are derived over a finite planning horizon with deterioration rate under time-varying demand rate.Design/methodology/approach: The Pontryagin's Maximum Principle is employed to explore the optimal position of decoupling point and the optimal production and inventory rate for the proposed dynamic models. The performances of parameters are illustrated through analytical and numerical approaches.Findings: The results denote that the optimal production rate and inventory level are closely related to the target setting which are highly dependent on production policy; meanwhile the optimal decoupling point is exist and unique with the fluctuating of deteriorating rate and product life cycle. The further analyses through both mathematic and numerical approaches indicate that the shorten of product life cycle shifts the optimal decoupling point forward to the end customer meanwhile a backward shifting appears when the deterioration rate increase.Research limitations/implications: There is no shortage allowed and the replacement policy is not taken into account.Practical implications: Solutions derived from this study of the optimal production-inventory plan and decoupling point are instructive for operation decision making. The obtained knowledge about the performance of different parameters is critical to deteriorating supply chains management.Originality/value: Many previous models of the production-inventory problem are only focused on the cost. The paper introduces the decoupling point control into the production and inventory problem such that a critical element-customer demand, can be taken into

  5. Continuously observing a dynamically decoupled spin-1 quantum gas

    Science.gov (United States)

    Anderson, R. P.; Kewming, M. J.; Turner, L. D.

    2018-01-01

    We continuously observe dynamical decoupling in a spin-1 quantum gas using a weak optical measurement of spin precession. Continuous dynamical decoupling modifies the character and energy spectrum of spin states to render them insensitive to parasitic fluctuations. Continuous observation measures this new spectrum in a single preparation of the quantum gas. The measured time series contains seven tones, which spectrogram analysis parses as splittings, coherences, and coupling strengths between the decoupled states in real time. With this we locate a regime where a transition between two states is decoupled from magnetic-field instabilities up to fourth order, complementary to a parallel work at higher fields [D. Trypogeorgos et al., preceding paper, Phys. Rev. A 97, 013407 (2018), 10.1103/PhysRevA.97.013407]. The decoupled microscale quantum gas offers magnetic sensitivity in a tunable band, persistent over many milliseconds: the length scales, frequencies, and durations relevant to many applications, including sensing biomagnetic phenomena such as neural spike trains.

  6. Evaluating Decoupling Process in OECD Countries: Case Study of Turkey

    Science.gov (United States)

    An, Nazan; Şengün Ucal, Meltem; Kurnaz, M. Levent

    2017-04-01

    Climate change is at the top of the present and future problems facing humanity. Climate change is now largely attributed to human activities and economic activities are the source of human activities that cause climate change by creating pressure on the environment. Providing the sustainability of resources for the future seems possible by reducing the pressure of these economic activities on the environment. Given the increasing population pressure and growth-focused economies, it is possible to say that achieving decoupling is not so easy on a global basis. It is known that there are some problems in developing countries especially in terms of accessing reliable data in transition and implementation process of decoupling. Developed countries' decoupling practices and proper calculation methods can also be a guide for developing countries. In this study, we tried to calculate the comparative decoupling index for OECD countries and Turkey in terms of data suitability, and we showed the differences between them. We tried to indicate the level of decoupling (weak, stable, strong) for each country. We think that the comparison of Turkey can be an example in terms of developing countries. Acknowledgement: This research has been supported by Bogazici University Research Fund Grant Number 12220.

  7. Are Human and Natural Systems Decoupling?

    Science.gov (United States)

    Ehrlich, P. R.; Ehrlich, A. H.

    2012-12-01

    trivial financial problems currently facing rich nations. Financial coverage in the media is massive compared to, say, the news that Earth's coral reefs are now beyond saving. Or consider the utter failure of most social scientists to come to grips with the inability of civilization to develop mechanisms to deal with global environmental problems, or of the persistence of an economic system based on unrealistic academic models and the preposterous notion that growth can continue forever. Whether mutually beneficial human-nature coupling can be restored in time is an open question. Doubtless grassroots action would be required, as well as new institutions/mechanisms for coordinating bottom-up and top-down efforts. There are many hopeful small-scale recoupling efforts such as the Natural Capital Project (http://www.naturalcapitalproject.org/) to protect biodiversity and ecosystem services, deployment of renewable energy systems in many countries, and work to unite academics and civil society in developing the necessary foresight intelligence, as in the Millennium Alliance for Humanity and the Biosphere (MAHB - http://mahb.stanford.edu/). Bottom-up efforts such as Occupy Wall Street (http://occupywallst.org/), the Movement to Solve the Climate Crisis (http://www.350.org/), and many other civil society groups are gaining some traction. But time is short, and in our view decoupling is winning.

  8. Browse Title Index

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    Items 551 - 600 of 736 ... Issue, Title. Vol 18, No 3 (2012), Retrospective outcome analysis of urethroplasties performed for various etiologies in a single South African center, Abstract PDF. AP van den Heever, J Lazarus, JH Naudé, L Wiechers, M Tsheisi. Vol 18, No 3 (2012), Review Article: Practical Aspects of Testosterone ...

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    Items 251 - 300 of 399 ... Issue, Title. Vol 11, No 2 (2012), Pattern of diabetic retinopathy in Kano, Nigeria, Abstract PDF. A Lawan, TB Mohammed. Vol 6, No 4 (2007), Pattern of Eclampsia in a Tertiary Health Facility Situated in a Semi-Rural Town in Northern Nigeria, Abstract PDF. J Tukur, BA Umar, A Rabi'u. Vol 7, No 3 (2008) ...

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    Items 451 - 500 of 2005 ... Issue, Title. Vol 92, No 1 (2015), Contraceptive practice among HIV positive women attending anti-retroviral clinic at the university of port Harcourt teaching hospital, port Harcourt, southern Nigeria, Abstract. JD Ojule, EO Oranu, BC Unamba. Vol 80, No 7 (2003):, Contraceptive practice among married ...

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    Items 201 - 250 of 399 ... Issue, Title. Vol 2, No 1 (2003), Management of occupational exposure to the human immunodeficiency viruses, Abstract PDF. I Babajide Keshinro. Vol 7, No 4 (2008), MARIJUANA SMOKING AMONG SECONDARY SCHOOL STUDENTS IN ZARIA, NIGERIA: FACTORS RESPONSIBLE AND EFFECTS ...

  12. Browse Title Index

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    Items 101 - 150 of 263 ... Issue, Title. Vol 1, No 2 (2002), Effect of Light and Darkness on Packed Cell Volume in the Rat, Abstract. A. A. OSINUBI, F. I. DURU, C. C. NORONHA, A. O. OKANLAWON. Vol 4, No 1 (2005), Effect of Marijuana Smoking on Blood Chemistry and Serum Biogenic Amines Concentrations in Humans ...

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    Items 651 - 700 of 745 ... Issue, Title. Vol 18, No 4 (2008), The acceptance rate of intrauterine contraceptive device(IUCD) amongst family planning clinic users in Lagos University Teaching Hospital (LUTH), Abstract. O Adegbola, OK Ogedengbe. Vol 22, No 4 (2012), The Accuracy of Ultrasonography in the Diagnosis of Breast ...

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    Items 51 - 100 of 101 ... Issue, Title. Vol 1, No 4 (2012), Knowledge and application of infectious diseases control measures among Primary Care workers in Nigeria: The Lassa fever example, Abstract PDF. AO Aigbiremolen, CB Duru, NS Awunor, C Abejegah, SO Abah, AD Asogun, OL Eguavoen. Vol 3, No 1 (2014) ...

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    Items 101 - 150 of 150 ... Issue, Title. Vol 7, No 2 (2013), Sociolinguistic import of name-clipping among Omambala cultural zone in Anambra state, Abstract PDF. N Ezenwa-Ohaeto. Vol 8, No 1 (2014), Stage and screen experience: The actors challenge, Abstract PDF. SA Dede, O Ihunwo. Vol 8, No 2 (2014), Stage ...

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    Items 201 - 250 of 475 ... Issue, Title. Vol 11, No 4 (2016), Health informatics and institutional review board – making research easier and ethical, Abstract. Arun-Kumar Kaliya-Perumal, Mohamad D. Awadalla, Daniel G. Abate, Yi-Fang Tsai. Vol 6, No 1 (2011), Heart rate variability, Abstract. MF Lutfi. Vol 6, No 2 (2011) ...

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    Items 1 - 17 of 17 ... Issue, Title. Vol 4, No 1 (2004), A Discourse on the Citizenship Question in Nigeria, Abstract. Toure Kazah-Toure. Vol 4, No 2 (2004), Briefings: Africa in 2015: Interrogating Barbie Democracy, Seeking Alternatives, Abstract. Francis B Nyamnjoh. Vol 3, No 2 (2003), Briefings: La Crise Ivoirienne: Elements ...

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    Items 251 - 300 of 1255 ... Issue, Title. Vol 10, No 1 (2004), CAREER MOTIVATION AND SPECIALTY CHOICE OF VETERINARY MEDICAL STUDENTS AT USMANU DANFODIYO UNIVERSITY, SOKOTO, NIGERIA, Abstract. DBU Edemeka, OP Ajagbonna. Vol 11, No 1 (2005), Cataractogenic Potential Of Cyanide-Induced ...

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    Issue, Title. Vol 23, No 2 (2011), Dynamique foliaire et croissance du maïs: Application du modèle «STICS» en conditions tropicales en RD-Congo, Abstract PDF. MM Lufuluabo, RV Kizungu, KK Nkongolo. Vol 18, No 1 (2006), Dynamique spatio-temporelle des populations d\\'Altises Podagrica spp. (Coleoptera ...

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    Items 351 - 390 of 390 ... Issue, Title. Vol 53, No 2 (2012), The accuracy of 2D ultrasound prenatal sex determination, Abstract. Blessing Ose-Emenim Igbinedion, Theophilus Oriazo Akhigbe. Vol 52, No 3 (2011), The benefit of myomectomy in women aged 40 years and above: Experience in an urban teaching hospital in ...

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    Items 251 - 300 of 2005 ... Issue, Title. Vol 92, No 4 (2015), Blood Pressure and Obesity Index Assessment in a Typical Urban Slum in Enugu, Nigeria, Abstract. GI Ahaneku, CU Osuji, OC Oguejiofor, BC Anisiuba, VO Ikeh, JE Ahaneku. Vol 80, No 10 (2003):, Blood pressure control in a population where antihypertensives are ...

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    Items 101 - 149 of 149 ... Issue, Title. Vol 32, No 1 (2016), Influence of Methionine Supplementation on Nicotine Teratogenicity in the Rat, Abstract. Girma Seyoum. Vol 24, No 1 (2006), Isolation and physicochemical characterization of godare (Colocasia esculenta) starch from Ethiopia, Abstract. Million Adane, Abebe Endale, ...

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    Items 1 - 50 of 139 ... Issue, Title. Vol 9, No 1 (2002), A Community-based feasibility study of National Health Insurance scheme in Ghana, Abstract PDF. Dominic Edoh, Ampofo Brenya. Vol 14, No 3 (2007), A comparative study of Multiple versus Single infection doses of Schistosoma haematobium in Golden hamsters ...

  4. Browse Title Index

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    Items 1 - 34 of 34 ... Issue, Title. Vol 3, No 1 (2006), A Retrospect Towards Change: Proverbs In Gynocentric Yoruba Written Plays, Abstract. O Adagbada. Vol 1, No 2 (2004), Body-mind-self-world: ecology and Buddhist philosophy, Abstract PDF. David Jones. Vol 3, No 2 (2006), Book Review: The mind- body problem, Abstract ...

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    Items 51 - 100 of 244 ... Issue, Title. Vol 16, No 1 (2004), Clinical Response To Pericardiectomy At UNTH, Enugu Nigeria, Abstract. JC Eze, UPC Ugwuanyi. Vol 22, No 1-4 (2010), Clinical utility of the erythrocyte sedimentation rate test and haemoglobin electrophoretic patterns among premarital couples in Port Harcourt, ...

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    Items 101 - 117 of 117 ... Issue, Title. Vol 7, No 1 (2005), The role of rural libraries in the attainment of rural development programmes in Nigeria, Abstract PDF. SO Obadare, AA Okunlola. Vol 3, No 1-2 (2001), The role of universities in the provision of scientific and technical information in Tanzania: problems and prospects ...

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    Items 701 - 750 of 900 ... Issue, Title. Vol 10, No 5 (2010), Production of protein concentrate and isolate from cashew (Anacardium occidentale L.) nut, Abstract PDF. S.O Ogunwolu, F.O Henshaw, H.P Mock, A Matros. Vol 8, No 3 (2008), Productivity of goats and their contribution to household food security in high potential ...

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    Items 8301 - 8350 of 11090 ... Issue, Title. Vol 8, No 22 (2009), Phytochemical compounds and antimicrobial activity of three medicinal plants (Alchornea hirtella, Morinda geminata and Craterispermum laurinum) from Sierra, Abstract PDF. L Koroma, BN Ita. Vol 9, No 21 (2010), Phytochemical constituents and antimicrobial ...

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    Items 401 - 450 of 641 ... Issue, Title. Vol 4, No 5 (2014), Nosocomial Infections in Patients Admitted in Intensive Care Unit of a Tertiary Health Center, India, Abstract PDF. H Mythri, KR Kashinath. Vol 3, No 3 (2013), Nutrition Intervention Program and Childhood Malnutrition: A Comparative Study of Two Rural Riverine ...

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    Items 151 - 200 of 286 ... Issue, Title. Vol 2, No 3-4 (2008), Impact of fire wood collection on trees species diversity in Bauchi state, Nigeria, Abstract. A Nura, A Ibrahim, I Mohammed, U Haruna. Vol 5, No 3 (2011), Impact of national special program for food security in Abia State, nigeria, Abstract. CO Emerole. Vol 5, No 1 (2011) ...

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    Items 51 - 100 of 198 ... Issue, Title. Vol 2, No 1 (2004), Community Volunteerism in Safety Promotion and Implications for Sustained Participation, Abstract. Lu-Anne Swart, Mohamed Seedat, Farzana Sader. Vol 6, No 1 (2008), Comparison of motor vehicle collision and non-motor vehicle collisions related child restraint seat ...

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    Items 7201 - 7250 of 11090 ... Issue, Title. Vol 8, No 16 (2009), Micropropagation of Plumbago zeylanica L. Abstract PDF. I Sivanesan, B Jeong. Vol 10, No 79 (2011), Micropropagation of pomegranate (Punica granatum L.) 'Bhagava' cultivar from nodal explant, Abstract PDF. VM Patil, GA Dhande, DM Thigale, JC Rajput.

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    Items 1 - 50 of 1255 ... Issue, Title. Vol 15, No 1 (2009), 3d Approach Of Spectral Response For A Bifacial Silicon Solar Cell Under A Constant Magnetic Field, Abstract PDF. B Zouma, AS Maiga, M Dieng, F Zougmore, G Sissoko. Vol 19, No 1 (2013), 3-D modelling of a bilayer heterojunction organic solar cell based on copper ...

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    Items 251 - 300 of 436 ... Issue, Title. Vol 3, No 1 (2014), Motor Park Discourse in South-Western Nigeria: Relations among Discourse, Group Ideology and Social Identity, Abstract PDF. TA Amao. Vol 2, No 3 (2013), Multinational Oil Companies and Corporate Social Responsibilities: The Host Communities Experience ...

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    Items 1 - 50 of 159 ... Issue, Title. Vol 5, No 2 (2016), Retracted: The clinical anatomy of the insertion of the rotator cuff tendons, Abstract PDF. Martie Vosloo, Natalie Keough, Mathys Arend De Beer. Vol 6, No 3 (2017): Supplementary Issue, Homo sapiens are bilaterally symmetrical but not with toe length and toe-length ratios ...

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    Items 601 - 650 of 1710 ... Issue, Title. Vol 19, No 6 (2016), Evaluation of antifungal efficacy of QMix 2in1 as a final irrigant: An in vitro study, Abstract PDF. E Kalyoncuoglu, E Sen Tunc, S Ozer, C Keskin, K Bilgin, A Birinci. Vol 20, No 11 (2017), Evaluation of calcium silicate cement bond strength after using gutta-percha ...

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    Items 201 - 250 of 399 ... Issue, Title. Vol 46, No 2 (2012): Supplementary, Lay representations of chronic diseases in Ghana: Implications for primary prevention, Abstract PDF. A de Graft Aikins, A Anum, C Agyemang, J Addo, O Ogedegbe. Vol 44, No 1 (2010), Left thoracic kidney: A rare finding at intravenous urography ...

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    Items 351 - 400 of 522 ... Issue, Title. Vol 19, No 4 (2013), Pioneers in South African Anaesthesia: Professor Arthur Bull and the Taurus Radiofrequency Blood Warmer, Abstract PDF. PC Gordon, ND Hauser, J Marais. Vol 19, No 5 (2013), Pioneers in South African Anaesthesia: Thomas Voss and the “Elephant Tube”, Abstract ...

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    Items 501 - 508 of 508 ... Issue, Title. Vol 33, No 2 (2011), Visuele stereotipering van sportvroue in die sportmedia, Abstract. M Brandt, A Carstens. Vol 30, No 1 (2008), Volunteers\\' perceptions of benefits derived from volunteering: an empirical study, Abstract. J Surujlal, M Dhurup. Vol 33, No 1 (2011), Was the Conconi test ...

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    Items 9951 - 10000 of 11090 ... Issue, Title. Vol 10, No 36 (2011), Study of heavy metals bioaccumulation in the process of vermicomposting, Abstract PDF. MM Aleagha, G Ebadi. Vol 10, No 45 (2011), Study of malondialdehyde (MDA) content, superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities in ...

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    Issue, Title. Vol 8, No 3 (2014), Activités antioxydantes des huiles essentielles de trois plantes aromatiques acclimatées au Togo, Abstract PDF. KA Agbodan, K Dotse, KH Koumaglo. Vol 2, No 1 (2008), Activities of Archachatina (Calachatina) marginata heamolymph enzymes: clues to terrestrial snails\\' salt intolerance ...

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    Items 51 - 100 of 165 ... Issue, Title. Vol 30 (2005), Digitisation projects at the University of Cape Town Libraries, Abstract. Janine Dunlop, Lesley Hart. Vol 24 (2002), DISA: an African Perspective on Digital Technology, Abstract. Michele Pickover, Dale Peters. Vol 30 (2005), Doing it right – or are we? Basic principles in the ...

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    Items 1 - 14 of 14 ... Issue, Title. Vol 2, No 1 (2009), Auditory and Respiratory Health Disorders Among Workers in an Iron and Steel Factory, Abstract. GM Abdel – Rasoul, OAE Mahrous, ME Abou Salem, MA Al-Batanony, HK Allam. Vol 2, No 1 (2009), Effect of An Educational Program About Medical Waste Management on ...

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    Items 551 - 600 of 2005 ... Issue, Title. Vol 78, No 2 (2001), Dieulafoy's lesion: case report, Abstract PDF. P. G. Jani. Vol 89, No 7 (2012), Dilemma of managing multi-surface dental caries in the primary dentition using the atraumatic restorative treatment: Renaissance or dimming hope, Abstract PDF. AM Kemoli. Vol 80, No 12 ...

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    Issue, Title. Vol 13, No 2 (2013), Using Mindfulness as a Teaching Aid for Phenomenology, Abstract PDF. IR Owen. Vol 8, No 1 (2008), Were Nietzsche's Cardinal Ideas – Delusions? Abstract PDF. Eva M Cybulska. Vol 12, No 1 (2012), What did you learn in school today? Abstract PDF. Carina Henriksson. Vol 5, No 1 (2005) ...

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    Items 151 - 192 of 192 ... Issue, Title. Vol 14, No 1 (2010), The competitive advantage of nations: is Porter's Diamond Framework a new theory that explains the international competitiveness of countries? Abstract PDF. AJ Smit. Vol 20, No 1 (2016), The dining and tipping behaviour of Black South Africans: a segmentation ...

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    Items 1 - 50 of 224 ... Issue, Title. Vol 38, No 2 (2011), Mogakga wa Maupaneng: A Tribute to Zeke. (17 Dec. 1919–27 Oct. 2008), Abstract. TS Raditlhalo. Vol 43, No 3 (2016), A “funny” feeling: laughter and nostalgia in Alex Latimer's The Space Race, Abstract. Nedine Moonsamy. Vol 35, No 1 (2008), A celebration of Book ...

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    Items 101 - 150 of 221 ... Issue, Title. Vol 32 (2004), Food habits of rural Swazi households: 1939-1999 Part 2: Social structural and ideological influences on Swazi food habits, Abstract PDF. MS Kgaphola, AT Viljoen. Vol 28 (2000), Food habits of rural Swazi households: 1939–1999 Part 1: Technological influences on Swazi ...

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    Items 51 - 76 of 76 ... Issue, Title. Vol 6, No 1 (2013), Integrating Sustainability into the Real Estate Valuation Process: A Nigerian Perspective, Abstract PDF. G K Babawale, B A Oyalowo. Vol 5, No 1 (2012), Internalising internationa valuation standards: Relevance and applicability issues in the Nigerian context, Abstract PDF.

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    Items 51 - 68 of 68 ... Issue, Title. Vol 12, No 1-2 (2009), Sécurité et ordre politique au Cameroun : entre dynamiques internes et connexions internationales, Abstract PDF. BEP Chantal. Vol 6, No 1-2 (2003), Self-Determination, Nationalism, Development and Pan-Africanism Stuck on the Runway: Are Intellectuals to be Blamed ...

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    Items 351 - 400 of 979 ... Issue, Title. Vol 45, No 9 (2003), Erectile dysfunction: A GP's guide to clinical assessment, Abstract PDF. PJ Harden. Vol 47, No 4 (2005), Ethical Issues in Family Practice: My Culture – Right or Wrong? Abstract PDF. GA Ogunbanjo, D Knapp van Bogaert. Vol 59, No 3 (2017), Ethical issues with ...

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    Issue, Title. Vol 9, No 34 (2010), Breeding properties of Esox lucius (L., 1758) living in Kapulukaya Dam Lake (Kirikkale, Turkey), Abstract PDF. Semra Benzer, Ali Gül, Mehmet Yilmaz. Vol 7, No 22 (2008), Breeding system and pollination biology of the semidomesticated fruit tree, Tamarindus indica L. (Leguminosae: ...

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    Items 151 - 184 of 184 ... Issue, Title. Vol 21, No 3 (2016), Serum AGEs in black South African patients with type 2 diabetes, Abstract PDF. Catherine Martha Mhlanga, Motetelo Alfred Mogale, Agustine Adu, Leshweni Jeremiah Shai. Vol 15, No 1 (2010), Serum resistin levels in nonalcoholic fatty liver disease and their ...

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    Items 101 - 150 of 180 ... Issue, Title. Vol 22, No 2 (2006), Post maritalpost-marital return to natal home to have the first birth: does this sociocultural tradition disempower women? Evidence from Gweru, Zimbabwe, Abstract. Crescentia Madebwe, Victor Madebwe. Vol 23, No 1 (2007), Predictors of Unintended Pregnancy ...

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    Items 101 - 108 of 108 ... Issue, Title. Vol 8, No 2 (2016), The status and challenges of clinical informatics development in South Africa, Abstract PDF. Abayomi Kehinde Owolabi, Thokozani Patrick Mhlongo, Neil Evans. Vol 4, No 1 (2012), The stuttering implementation of language policies in the South African education system ...

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    Items 51 - 100 of 100 ... Issue, Title. Vol 28 (2013): Special Issue, Occurrence of Cryptosporidium and Giardia in domestic animals in peri-urban communities of Kafue district, Zambia, Abstract. J Siwila, IGK Phiri, HI Enemark, M Nchito, A Olsen. Vol 26, No 1 (2009), Occurrence of foot and mouth disease serotypes in Tanzania: A ...

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    Issue, Title. Vol 8, No 2 (2016): Supplement, Using operative models (ICF and CBR) within an interprofessional context to address community needs, Abstract PDF. A Rhoda, F Waggie, G.C. Filies, J.M. Frantz. Vol 2, No 1 (2010), Using portfolios to assess professional competence and development in medical laboratory ...

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    Items 651 - 700 of 1710 ... Issue, Title. Vol 15, No 2 (2012), Experiences of mistreatment among medical students in a University in south west Nigeria, Abstract PDF. ET Owoaje, OC Uchendu, OK Ige. Vol 17, No 5 (2014), Experimental investigation of relationship between trauma and bisphosphonate-related osteonecrosis ...

  19. Browse Title Index

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    Items 9101 - 9150 of 11090 ... Issue, Title. Vol 7, No 25 (2008), Recruitment of bloom-forming cyanobacteria and its driving factors, Abstract PDF. X Tan, F Kong, H Cao, Y Yu, M Zhang. Vol 13, No 47 (2014), Recycling of vinasse in ethanol fermentation and application in Egyptian distillery factories, Abstract PDF. M Fadel, ANA ...

  20. Browse Title Index

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    Issue, Title. Vol 3, No 2 (2016), Usefulness of problem tree, objective tree and logical framework matrix to fix chal-lenges of unemployment and underemployment of higher education graduates in Rwanda, Kenya and Ghana, Abstract PDF. Irénée Ndayambaje, Philothère Ntawiha, Susan Ngigi, Samuel Yaw Ampofo.

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    Items 926 - 950 of 1840 ... Issue, Title. Vol 48, No 1 (2013), Is a reduction in the individual vigilance of mothers a key evolutionary driver of group formation in white rhinos? Abstract. Adrian M. Shrader, Julie F. Post, Nicole Hagenah, Philip W. Bateman. Vol 49, No 1 (2014), Is protein content in the diet of Wahlberg's epauletted ...

  2. Browse Title Index

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    Items 101 - 140 of 140 ... Issue, Title. Vol 79, No 1 (2009), Soil erosion and sediment yield from the degraded Mzinga River Catchment in Uluguru Mountains, Tanzania, Abstract. MK Mulengera, LLL Lulandala, SMS Maliondo. Vol 77, No 1 (2008), Some Guidelines For Reduced Impact Timber Harvesting Practices In Miombo ...

  3. Browse Title Index

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    Items 1 - 32 of 32 ... Issue, Title. Vol 6, No 1 (2017), Note On: Responsibility of transnational environmental pollution under international environmental law, Abstract PDF. Hakeem O. Ijaiya. Vol 6, No 1 (2017), Note On: The adverse effects of polygamy on the rights of women: a case study in Gedeo and Sidama Zones, Abstract ...

  4. Browse Title Index

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    Items 1 - 50 of 255 ... Issue, Title. Vol 9, No 2 (2009), A Hermeneutic Phenomenological Approach to understanding Stress-Coping as an Existential Phenomenon Lived by Healthy Adolescents, Abstract PDF. R Guimond-Plourde. Vol 14, No 1 (2014), A Phenomenological Case Study of the Therapeutic Impact of Imagery: ...

  5. Browse Title Index

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    Items 51 - 71 of 71 ... Issue, Title. Vol 18, No 2 (2011), Strategic management: An Eastern Cape construction SME case study, Abstract PDF. C Adendorff, G Appels, B Botha. Vol 21, No 2 (2014), Sustainability impacts of building products: An assessment methodology for developing countries, Abstract PDF. J Gibberd.

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    Issue, Title. Vol 78, No 12 (2001):, The growing threat of arbovirus transmission and outbreaks in Kenya: a review, Abstract PDF. R. C. Sang, L. M. Dunster. Vol 89, No 2 (2012), The impact of partial kangaroo mother care on growth rates and duration of hospital stay of low birth weight infants at the Kenyatta National Hospital ...

  7. Browse Title Index

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    Items 1 - 50 of 482 ... Issue, Title. Vol 40, No 4 (2015), Igilango Geesi in the public sphere: Soyinka's intervention in Nigerian Political Discourse, Abstract PDF. Dipo Irele. Vol 31, No 2 (2006), A Demand-driven Model of Decentralised Land-use Planning and Natural Resource Management: Experiences from the Chiredzi ...

  8. Browse Title Index

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    Issue, Title. Vol 11, No 3 (2017), Synthesis of novel thiazolobenzimidazoles, Abstract PDF. Siomenan Coulbali, Roger Simplice Pépin Zoakouma, Sagne Jacques Akpa, Venance Martial Say, Fanté Bamba, Drissa Sissouma, Ané Adjou. Vol 3, No 4 (2009), Synthesis of peptide derivatives of aspirin and their antibiogram ...

  9. Browse Title Index

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    Items 1 - 50 of 319 ... Issue, Title. Vol 4, No 1 (2004), A Quantitative Economics Of Seasonality In Bus Patronage In Nigeria, Abstract PDF. Kenneth U Nnadi. Vol 10, No 2 (2010), Acceptability of bread produced from hausa-potato and sweetpotato composite flours, Abstract PDF. C Aniedu, UA Agugo. Vol 11, No 2 (2011) ...

  10. Browse Title Index

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    Items 101 - 150 of 1117 ... Issue, Title. Vol 23, No 1:1 (2017), Am I supporting his addiction: The dilemma of having an adolescent son on drugs, Abstract. G.T. Tshweneagae, M.P. Mzolo, S. Sibanda. Vol 17, No 2 (2011), An analysis of a national strategic framework to promote tourism, leisure, sport and recreation in South ...

  11. Browse Title Index

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    Items 1 - 50 of 333 ... Issue, Title. Vol 23, No 2 (2000), Review Article Free-living limnic nemafauna of Ethiopia: a review of the species reported outside the Rift Valley, Abstract PDF. Eyualem Abebe. Vol 20, No 1 (1997), Bacillus spp from fermented tef dough and kocho: identity and role in two Ethiopian fermented foods.

  12. Browse Title Index

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    Items 251 - 260 of 260 ... Issue, Title. Vol 46 (2006), The use of two biological formulations of Bacillus Thuringiensis and Bacillus Sphaericus in the control of mosquito vectors of malaria in drains and rice fields, Abstract. M H Ocran, F Akpabey. Vol 47 (2007), The Wildlife Trade In Ghana: A Threat To Biodiversity Conservation ...

  13. Browse Title Index

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    Items 501 - 550 of 1605 ... Issue, Title. Vol 19, No 4 (2016), Effects of alpha‑tocopherol on gingival expression of inducible nitric oxide synthase in the rats with experimental periodontitis and diabetes, Abstract PDF. M Hatipoğlu, NÖ Alptekin, MC Avunduk. Vol 18, No 4 (2015), Effects of azithromycin versus metronidazole– ...

  14. Browse Title Index

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    Items 301 - 350 of 436 ... Issue, Title. Vol 4, No 2 (2015), Protest Demonstrations, Political Participation and the Law in the Era of Terrorism: Nigeria's Public Order Act and the United States' HR 347 in Perspectives, Abstract PDF. OS Eesuola. Vol 3, No 2 (2014), Psychological Determinants of Aggressive Behaviour among ...

  15. Browse Title Index

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    Items 1 - 50 of 667 ... Issue, Title. Vol 85, No 1 (2014), Post-mortem examination and sampling of African flamingos (Phoenicopteridae) under field conditions, Abstract. John E Cooper, Amy E Deacon, Thomas Nyariki. Vol 76, No 3 (2005), A brief survey of the birds in Kumbira Forest, Gabela, Angola, Abstract. ÇH Sekercioglu, A ...

  16. Browse Title Index

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    Items 1 - 50 of 249 ... Issue, Title. Vol 30, No 2 (2010), 'Akuchanywa apha please' No peeing here please: The language of signage in Cape Town, Abstract. Tessa Dowling. Vol 34, No 1 (2014), 'Welcome to proper mall': The language on signs in Diepsloot, Johannesburg, Abstract. Tessa Dowling. Vol 36, No 2 (2016) ...

  17. Browse Title Index

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    Items 51 - 100 of 201 ... Issue, Title. Vol 12, No 1 (2006), Conservative management of cervical ectopic pregnancy: case report, Abstract PDF. TD Naidoo, MR Ramogale, J Moodley. Vol 18, No 2 (2012), Contraceptive use and associated factors among South African youth (18 - 24 years): A population-based survey, Abstract ...

  18. Browse Title Index

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    Items 1 - 50 of 900 ... Issue, Title. Vol 10, No 6 (2010), β-carotene, iron and zinc content in Papua New Guinea and East African highland bananas. Abstract PDF. R Fungo, J.K Kikafunda, M Pillay. Vol 11, No 6 (2011), Allium hookeri, Thw. Enum. A lesser known terrestrial perennial herb used as food and its ethnobotanical ...

  19. Browse Title Index

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    Items 201 - 250 of 444 ... Issue, Title. Vol 70 (2017), Lanthanide(III) complexes with tridentate Schiff base ligand, antioxidant activity and x-ray crystal structures of the Nd(III) and Sm(III) complexes, Abstract PDF. Mbossé Ndiaye Gueye, Moussa Dieng, Ibrahima Elhadji Thiam, Djiby Lo, Aliou Hamady Barry, Mohamed Gaye, ...

  20. Browse Title Index

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    Items 751 - 800 of 1463 ... Issue, Title. Vol 9, No 2 (2009): Special Issue, In-vitro antibacterial activity of selected medicinal plants from Longisa region of Bomet district, Kenya, Abstract PDF. KR Cheruiyot, D Olila, J Kateregga. Vol 7, No 4 (2007), In-vitro antimicrobial activity of selected honeys on clinical isolates of Helicobacter ...

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    Items 251 - 300 of 1011 ... Issue, Title. Vol 31, No 2 (2012), Design and Development of a Soap Stamping and Tableting Machine for Small Scale Soap Manufacturer, Abstract PDF. BN Nwankwojike. Vol 36, No 3 (2017), DESIGN AND FABRICATION OF A DISCOMFORT INDEX METER FOR DETERMINATION OF STRESS IN ...

  2. Browse Title Index

    African Journals Online (AJOL)

    Items 51 - 100 of 309 ... Issue, Title. Vol 19, No 1 (2011), Calibration and Performance Testing of Sodium Iodide, NaI (Tl), Detector at the Food and Environmental Laboratory of the Radiation Protection Institute of the Ghana Atomic Energy Commission, Abstract PDF. A Faanu, G Emi-Reynolds, EO Darko, R Awudu, ET Glover, ...

  3. Browse Title Index

    African Journals Online (AJOL)

    Items 7701 - 7750 of 11090 ... Issue, Title. Vol 9, No 20 (2010), Nutritional evaluation of yoghurt prepared by different starter cultures and their physiochemical analysis during storage, Abstract PDF. A Hassan, I Amjad. Vol 11, No 15 (2012), Nutritional factors effecting the production of L-asparaginase by the Fusarium sp.

  4. Browse Title Index

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    Items 101 - 136 of 136 ... Issue, Title. Vol 5, No 2 (2016), Socio cum linguistic interplay in language choice and performance in a multiligual milieu, Abstract PDF. George E. Onwudiwe. Vol 6, No 2 (2017), Socio-cultural attitudes of Igbomina tribe toward marriage and abortion in Osun and Kwara states of Nigeria, Abstract PDF.

  5. Browse Title Index

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    Items 51 - 100 of 210 ... Issue, Title. Vol 30, No 2 (2006), Comparative Brine Shrimp Toxicity of Withenia somnifera and Chrysanthemum cinerariaefolium Extracts and In Vitro Antimicrobial Activity of W. Somnifera, Abstract. J M Mbaria, G W Gakuya, S N Yunus, H F Kaburia, A N Njuguna. Vol 27 (2004): Special Issue 2004 ...

  6. Browse Title Index

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    Items 1 - 50 of 309 ... Issue, Title. Vol 8, No 1 (2005), Mucuna pruriens and its effect on some physical, chemical and biological properties of a Forest Acrisol, Abstract PDF. SA Boateng. Vol 20, No 3 (2012): Special Edition, A Check-list of Some Elements of the Vegetation in three river basins in the Okyeman Area, Southern ...

  7. Browse Title Index

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    Items 251 - 300 of 635 ... Issue, Title. Vol 4, No 4 (2011), Effects of Fallow Genealogical Cycles on the Build-up of Nutrients in Soils of the Cross River Rainforest, South-Southern Nigeria ... Vol 7, No 6 (2014), Effects of treated poultry litter on potential greenhouse gas emission and field agronomic performance, Abstract PDF.

  8. Browse Title Index

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    Items 1 - 50 of 475 ... Issue, Title. Vol 1, No 1 (2006), Acanthamoeba keratitis in Sudan: outcome of ketoconazole treatment in six patients, Abstract. Abdel Mageed M Imam, El Sheikh Mahgoub. Vol 3, No 4 (2008), Staphylococcus aureus Nasal Carriage among Surgical personnel in National Ribat University Teaching ...

  9. Browse Title Index

    African Journals Online (AJOL)

    Items 201 - 250 of 577 ... Issue, Title. Vol 20, No 2 (2003), Emergency Contraception: A Global Overview of Knowledge, Attitudes and Practices Among Providers, Abstract PDF. Deborah Haggai. Vol 23 (2006):, Emergency laparotomy for peripartum haemorrhage in Bida North Central Nigeria, Abstract PDF. Sunny Abiodun O ...

  10. Browse Title Index

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    Items 351 - 400 of 943 ... Issue, Title. Vol 14, No 3 (2010), Factors Hindering Acceptance of HIV/AIDS Voluntary Counseling and Testing (VCT) among Youth in Kwara State, Nigeria, Abstract PDF. LA Yahaya, AAG Jimoh, OR Balogun. Vol 14, No 4 (2010), Factors Influencing Contraceptive Choice and Discontinuation among ...

  11. Browse Title Index

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    Items 151 - 162 of 162 ... Issue, Title. Vol 2, No 2 (2003), The Significance Of Adaptive Changes In Rat Haemoglobin Micro-environment And Electophoretic Fractions During Barocamera Hypoxia, Abstract. BO Ekpo. Vol 5, No 1 (2006), The study of conicity index and waist hip ratio in Nigerian children and adolescents, Abstract.

  12. Browse Title Index

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    Items 1 - 50 of 165 ... Issue, Title. Vol 36 (2008), A Case Study about Open Source Internet Software in the eThekwini Municipality and a discussion of the relevance of open source software in libraries, Abstract. A Spencer. Vol 42 (2011), A crack in the 'dam(ned)' wall?: cooperation and collaboration among higher education ...

  13. Browse Title Index

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    Items 401 - 450 of 522 ... Issue, Title. Vol 12, No 1 (2006), Spectral entropy and haemodynamic response to surgery during sevoflurane anaesthesia, Abstract PDF. FJ Smith, E Dannhauser. Vol 19, No 3 (2013), Spinal anaesthesia for brachytherapy for carcinoma of the cervix: a comparison of two dose regimens of hyperbaric ...

  14. Browse Title Index

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    Items 51 - 100 of 145 ... Issue, Title. Vol 21, No 1 (2013), Estimation and comparison of tensile bond strengths at resin-dentin interface of total-etch and self-etch bonding systems, Abstract. R Garewal, J Garewal. Vol 18, No 2 (2010), Etiology of tooth discoloration- a review, Abstract. ST Manuel, P Abhishek, M Kundabala. Vol 20 ...

  15. Browse Title Index

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    Issue, Title. Vol 22, No 2 (2008), Voltammetric determination of heparin based on its interaction with malachite green, Abstract PDF. Xueliang Niu, Weili Zhang, Na Zhao, Wei Sun. Vol 22, No 2 (2008), Voltammetric determination of l-cysteic acid on a 1-[4-(ferrocenyl-ethynyl)phenyl]-1-ethanone modified carbon paste ...

  16. Browse Title Index

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    Items 1 - 50 of 449 ... Issue, Title. Vol 1, No 2 (2012), 28th Africa Cup of Nations (Gabon/Equatorial Guinea - 2012): Lessons for Nigeria Football, Abstract PDF. E J Jeroh. Vol 1, No 3 (2012), Adult Functional Literacy Curriculum: Effective Strategy for Human Resource Development in Nigeria, Abstract PDF. VE Okafor, C Ejezie.

  17. Browse Title Index

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    Items 351 - 400 of 745 ... Issue, Title. Vol 19, No 2 (2009), Incidence and Patterns of Lumbosacral Transitional Vertebrae, in Patients with Low Backpain in a Nigerian Hospital, Abstract. OI Oyinloye, AY Abdulkadir, M Babalola. Vol 13, No 3-4 (2003), Incidence of Bacterial Pathogens following Biomechanical Treatment of Root ...

  18. Browse Title Index

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    Items 51 - 100 of 207 ... Issue, Title. Vol 1, No 1 (2005), Comparative Analysis Of Empowerment Under Farmer Field School And Conventional Extension System, Abstract. T Julius Odeyemi, CC Asiabaka. Vol 7, No 1 (2011), Comparative Assessment of Women Farmers' Status in Japan and Nigeria, Abstract. SA Tijani, I Yano.

  19. Browse Title Index

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    Items 4351 - 4386 of 4386 ... Issue, Title. Vol 107, No 6 (2017), When students become patients: TB disease among medical undergraduates in Cape Town, South Africa, Abstract PDF. H van der Westhuizen, A Dramowski. Vol 106, No 4 (2016), Where do children die and what are the causes? Under-5 deaths in the Metro West ...

  20. Browse Title Index

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    Items 51 - 100 of 138 ... Issue, Title. Vol 1, No 2 (2012), Diet and lifestyle: its association with cholesterol levels among Nomad tribal populations of Rajasthan, Abstract PDF. S Bandana. Vol 5, No 2 (2016), Differentiation of Entamoeba histolytica, Entamoeba dispar and Entamoeba moshkovskii from diarrhoeic stools using ...

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    Items 51 - 100 of 265 ... Issue, Title. Vol 35, No 2 (2008), Choice of place for childbirth: prevalence and correlates of utilization of health facilities in Chongwe district, Zambia, Abstract PDF. AN Hazemba, S Siziya. Vol 43, No 1 (2016), Clinical and Radiological Features of Multiple Myeloma Patients at the University Teaching ...

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    Issue, Title. Vol 50, No 3 (2008), Why Do Patients Choose to Consult Homeopaths? Abstract PDF. C McIntosh, GA Ogunbanjo. Vol 51, No 1 (2009), Why Doctors Do Not Answer Referral Letters, Abstract PDF. S Smith, G Khutoane. Vol 52, No 2 (2010), Will graduating medical students prefer to practise in rural communities?

  3. Browse Title Index

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    Items 551 - 600 of 635 ... Issue, Title. Vol 8 (2015): Supplement 1, Telecommunications' usage and public transport passengers' travel behaviour in Lagos, Nigeria, Abstract PDF. OO Agunloye. Vol 7, No 1 (2014), Temporal Trends in Agglomeration Economies amongst Firms in the Lagos Region, Nigeria, Abstract PDF.

  4. Browse Title Index

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    Items 1 - 50 of 164 ... Issue, Title. Vol 1, No 2 (2009), A case for teaching English as a service subject at universities in Kenya, Abstract PDF. AN Kioko. Vol 1, No 1 (2007), A comparative analysis of cohesion in academic and newspaper texts, Abstract PDF. S Ambiyo. Vol 7, No 2 (2016): Journal of Language, Technology ...

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    Items 251 - 300 of 408 ... Issue, Title. Vol 15, No 2 (2016), Oral care of critically ill patients: practice of attending nurses at the university of Benin Teaching Hospital, Abstract. J.E. Enabulele, K.U. Tobi. Vol 13, No 1 (2014), Oral Health Attitudes and Behavior among Graduating Medical Students at the University of Benin, Benin ...

  6. Browse Title Index

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    Items 151 - 200 of 463 ... Issue, Title. Vol 3, No 6 (2011), Effect of cross section on collapse load in pipe bends subjected to in-plane closing moment, Abstract PDF .... Vol 7, No 2 (2015), Evaluation of uncertainty of measurement for cellulosic fiber and isotactic polypropylene composites subjected to tensile testing, Abstract PDF.

  7. Browse Title Index

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    Items 1 - 50 of 231 ... Issue, Title. Vol 16, No 2 (2004), A Comparative Analysis of Students\\' Characteristics and the Impact these have on Student Unrest: The Case of Three Universities in Harare, Abstract. Muchadei Alex Nyota. Vol 24, No 3 (2012), A Comparative Analysis of the Causes of Primary School Dropout in an Urban ...

  8. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 50 of 52 ... Issue, Title. Vol 15 (2000), Ammi analysis of maize yield trials in South-Western Nigeria, Abstract. SR Ajibade ... Vol 18 (2003), Cytogenic analysis of branching traits and inheritance pattern in a cross of branching and non-branching cowpea (Vigna unguiculata L. Walp), Abstract. CO Aremu, I Fawole, MA ...

  9. Browse Title Index

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    Items 51 - 100 of 333 ... Issue, Title. Vol 36, No 2 (2013), Characterization of fungal extracts from Trichoderma isolates: their effects against coffee wilt pathogen (Gibberella xylarioides), Abstract PDF. Afrasa Mulatu, Negussie Megersa, Tesfaye Alemu. Vol 35, No 2 (2012), CHROMOSOME STUDY OF SOME GRASSHOPPER ...

  10. Browse Title Index

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    Items 51 - 100 of 518 ... Issue, Title. Vol 2, No 2 (2010), Application of a particle swarm optimization in an optimal power flow, Abstract PDF. DB Attous, Y Labbi. Vol 3, No 1 (2011), Application of Fuzzy Ensembles for Optimal Distribution of Power in Electrical Networks, Abstract PDF. A Guediri, D Ben Attous. Vol 8, No 3 (2016): ...

  11. Browse Title Index

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    Items 201 - 250 of 262 ... Issue, Title. Vol 18, No 1 (2012), Self-concept in overweight adolescents, Abstract PDF. SV Pisk, M Mihanoviæ, A Silic, A Bogoviæ, V Vidovic. Vol 20, No 4 (2014), Sensitivity and specificity of neuropsychological tests for dementia and mild cognitive impairment in a sample of residential elderly in South ...

  12. Browse Title Index

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    Items 401 - 450 of 1309 ... Issue, Title. Vol 6, No 3 (2009), Biochemical and toxicological studies of aqueous extract of Syzigium aromaticum (l.) Merr. & perry (myrtaceae) in rodents, Abstract PDF. E.O Agbaje, A.A Adeneye, A.O Daramola. Vol 14, No 1 (2017), Biochemical composition and nutritional evaluation of barley rihane ...

  13. Browse Title Index

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    Items 101 - 150 of 444 ... Issue, Title. Vol 58 (2005), Designer Ligands. Part 13. Synthesis and Catalytic Activity of Transition Metal Complexes of a Macrocyclic Ligand, Abstract PDF. Perry T Kaye, Gareth M Watkins, Kevin W Wellington. Vol 60 (2007), Detection of Sarin with a Fluorinated Polymer-coated Quartz Crystal ...

  14. Browse Title Index

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    Issue, Title. Vol 11, No 3 (2011), Sea-Change or Change Challenge? Health Information access in Developing Countries: The U.S. National Library of Medicine experience, Abstract PDF. J Royall, B Lyon. Vol 16, No 1 (2016), Seasonal abundance and molecular identification of West Nile virus vectors, Culex pipens and ...

  15. Browse Title Index

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    Items 1 - 50 of 193 ... Issue, Title. Vol 14 (2014), Cattle pastoralists' strategies to cope with water scarcity in climate change context in northern Benin: Cattle pastoralists' strategies to cope with water scarcity in climate change context in northern Benin, West Africa, Abstract. G Djohy, AH Edja, PBI Akponikpè, F Olokesusi, ...

  16. Browse Title Index

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    Items 301 - 350 of 1255 ... Issue, Title. Vol 10, No 3 (2004), Comparative study of the fastness of Annatto and procion yellow R on cellulosic fabric, Abstract. AO Adetuyi, L Lajide, AV Popoola, O Ajayi. Vol 19, No 1 (2013), Comparative study of the inhibition effects of alkaloid and non alkaloid fractions of the ethanolic extracts Of ...

  17. Browse Title Index

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    Items 151 - 184 of 184 ... Issue, Title. Vol 35 (2004), The evolutionary linguist's divining-rod: Restrictive theory, Abstract PDF. R P Botha. Vol 31 (1998), The final nie in Afrikaans negative sentences, Abstract PDF. J Oosthuizen. Vol 33 (2000), The interaction of classifiers and syntax in South African Sign Language, Abstract PDF.

  18. Browse Title Index

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    Items 201 - 250 of 438 ... Issue, Title. Vol 21, No 1 (2016), Knowledge and attitudes about HIV infection and prevention of mother to child transmission of HIV in an urban, low income community in Durban, South Africa: Perspectives of residents and health care volunteers, Abstract PDF. Firoza Haffejee, Katie A. Ports, ...

  19. Browse Title Index

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    Items 376 - 400 of 1840 ... Issue, Title. Vol 32, No 4 (1997), Book Review, Abstract PDF. Graham I. H. Kerley. Vol 21, No 2 (1986), Book Reviews, Abstract PDF. A.C. Brown, H.R. Hepburn, M.J.M. Nijland, Peter Apps. Vol 21, No 3 (1986), Book Reviews, Abstract PDF. Kel Sheppey, Peter Apps, Robin M. Crewe, David ...

  20. Browse Title Index

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    Items 701 - 750 of 1010 ... Issue, Title. Vol 6, No 2 (1998), Performance et stabilité de rendement des génotypes de patate douce dans divers environnements à l'est du Congo, Abstract. P Phemba, T Mutombo, N B Lutaladio, E E Carey. Vol 22 (2014): Supplement, Performance of Artemia shell-free embryos, Moina micrura and ...

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    Items 51 - 100 of 705 ... Issue, Title. Vol 22 (2012), Advanced Cantonese ESL Learners' Use of a Monolingual Dictionary for Language Production, Abstract PDF. AYW Chan. Vol 26 (2016), Advantages and disadvantages in the use of internet as a corpus: The case of the online dictionaries of Spanish valladolid-uva, Abstract ...

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    Items 1 - 27 of 27 ... Issue, Title. Vol 3 (2009), Africanization of Music Education in Nigeria within the Context of Globalization: A Critical Appraisal, Abstract. AO Adeogun, D Mus. Vol 3 (2009), Comparative Assessment of Music Education Practice in Nigeria and Selected Global Experiences, Abstract. N Okonkwo. Vol 4 (2010) ...

  3. Browse Title Index

    African Journals Online (AJOL)

    Items 301 - 350 of 629 ... Issue, Title. Vol 29 (2009): Supplement 12, Hide and Seek. Aspects of the dynamics of bible translation 1, Abstract PDF. C Lombaard. Vol 35, No 2 (2015), Hierarchy of truths revisited, Abstract PDF. E.J. Echeverria. Vol 26, No 2 (2006): Supplementum 7, Hippocrates: facts and fiction, Abstract PDF.

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    Items 401 - 450 of 870 ... Issue, Title. Vol 7, No 5 (2007), Food and its preparation conditions in hotels in Accra, Ghana: A concern for food safety, Abstract PDF. Kennedy K Addo, Gloria I Mensah, Christian Bonsu, Moses L Akyeh. Vol 1, No 1 (2001), FOOD AND NUTRITION POLICIES IN AFRICA: CAPACITY CHALLENGES ...

  5. Browse Title Index

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    Items 1 - 50 of 437 ... Issue, Title. Vol 7, No 3 (2002), 'n Raamwerk vir die verpleging van die volwasse pasiënt op druk-gekontroleerde ventilasie in die kritiekesorgeenheid, Abstract. M. Martin, E. Arries, E. Nel. Vol 16, No 1 (2011), A closer look at racial differences in the reporting of self-assessed health status and related ...

  6. Browse Title Index

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    Items 301 - 350 of 366 ... Issue, Title. Vol 47, No 2 (2001), Symptomatic spinal cord involvement in prostate cancer, Abstract. N Eke. Vol 46, No 9 (2000), Symptoms and findings related to HIV in women in rural Gutu District, Zimbabwe, 1992-1993, Abstract. C Nilses, L Nystrom, S P Munjanja, G Lindmark. Vol 45, No 10 (1999) ...

  7. Browse Title Index

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    Items 1 - 15 of 15 ... Issue, Title. Vol 1, No 1 (2007), An Action Five Strategy For Bridging The Gender Gap In Academic Research Activities In African Universities. The Case of Nigeria, Abstract PDF. DN Okorie, OG Agabi, CM Uche. Vol 1, No 1 (2007), Book Review: Confronting sexual harassment in Ghanaian Universities ...

  8. Browse Title Index

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    Items 151 - 163 of 163 ... Issue, Title. Vol 11, No 2 (2016), Two sides to every coin: farmers' perceptions of mining in the Maningory watershed, Madagascar, Abstract PDF. Natasha Stoudmann, Claude Garcia, Ihoby H Randriamalala, Vanessa AG Rakotomalala, B Ramamonjisoa. Vol 10, No 2 (2015), Understanding ...

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    Items 1 - 50 of 130 ... Issue, Title. Vol 3, No 1 (2013), A diagnostic assessment of eighth grade students' and their teachers' misconceptions about basic chemical concepts, Abstract PDF. A Lemma. Vol 6, No 1 (2016), Achieving the aims of school practical work with microchemistry, Abstract PDF. JD Bradley. Vol 7, No 1 (2017) ...

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    Issue, Title. Vol 32, No 4 (1997), Shark and skate egg-cases cast up on two South African beaches and their rates of hatching success, or causes of death, Abstract PDF. Craig Smith, Charles Griffiths. Vol 24, No 4 (1989), Shark predation on Indian Ocean bottlenose dolphins Tursiops truncatus off Natal, South Africa ...

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    Items 451 - 500 of 581 ... Issue, Title. Vol 30, No 1 (2016), Risky sexual behaviour and associated factors among students of Debre Tabor University, Northwest Ethiopia: a cross-sectional study, Abstract PDF. Awoke Derbie, Mekonnen Assefa, Daniel Mekonnen, Fantahun Biadglegne. Vol 28, No 1 (2014), Road traffic accident: ...

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    Items 951 - 1000 of 2005 ... Issue, Title. Vol 91, No 5 (2014), Implementation of a School-Based HIV Prevention Curriculum Following National Dissemination in Nyanza Province, Kenya, Abstract PDF. EJ Matthews, ES Puffer, CS Meade, SA Broverman. Vol 91, No 10 (2014), Implementing tools to promote adherence to ...

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    Items 101 - 107 of 107 ... Issue, Title. Vol 6, No 1 (2017), The Ophthalmic status manifestations of nutritional and lifestyle disorders of men in a peri urban community in Ghana, Abstract PDF. F. Vuvor, M. Steiner-Asiedu, F.K. Saalia. Vol 2, No 1 (2013), Thyroid Disorders in Accra, Ghana: A Retrospective Histopathological Study ...

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    Items 1 - 50 of 118 ... Issue, Title. Vol 4, No 1 (2007), A preliminary note on the nutritional contents of rumen digesta from cattle, sheep and goats, Abstract. Of Rojugbokan, JO ... Vol 1, No 2 (2004), Acccess to credit and food security status of farming households in Lagelu local government area of Oyo State, Nigeria, Abstract.

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    Issue, Title. Vol 25, No 2 (2005), Yam-based farm practices and nematode problems in stored yams (Dioscorea spp.) in Ghana, Abstract PDF. CK Kwoseh, RA Plowright, J Bridge, R Asiedu. Vol 27, No 2 (2007), Yield, irrigation production efficiency and economic returns of broccoli under variable drip irrigation and lateral ...

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    Items 151 - 189 of 189 ... Issue, Title. Vol 5, No 1 (2004), SIMULATION NUMERIQUE DES PERFORMANCES D\\'UN DISTILLATEUR SOLAIRE FONCTIONNANT EN MODE INDIRECT, Abstract. R Tchinda, E Kaptouom. Vol 12, No 2 (2013), Solitary Rossby waves in the lower tropical troposphere, Abstract PDF. A Lenouo, F ...

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    Items 201 - 250 of 985 ... Issue, Title. Vol 8 (2004), Buys-Ballot estimates when stochastic trend is quadratic, Abstract. I S Iwueza, J Ohakwe. Vol 16 (2010), Calculation of Dose Gamma Ray Build up Factor in Some Homogenous Materials, Abstract. MA Arogunjo, JB Hamzat. Vol 11 (2007), Capacity and coverage of power ...

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    Items 201 - 250 of 661 ... Journal Home > Advanced Search > Browse Title Index. Log in or Register to get access to full text downloads. .... A El-Mahdy, B Bolduc, J Upadhyay, R Shoukr, A Khoury. Vol 19, No 1 (2013), Factors affecting lower calyceal stone clearance after Extracorporeal shock wave lithotripsy, Abstract PDF.

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    Items 101 - 150 of 985 ... Journal Home > Advanced Search > Browse Title Index ... Vol 17 (2010), Alternating Direction Implicit Finite Difference Time Domain Acoustic Wave Algorithm, Abstract. E Ikata .... Vol 17 (2010), Analytic derivation of the wave profile and phase speed of sixth order Stokes waves in deep water, Abstract.

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    Items 151 - 200 of 229 ... Journal Home > Advanced Search > Browse Title Index. Log in or Register to get ... KM Lawal, MN Umego, SB Ojo. Vol 17, No 1 (2005), Obtaining the green's function for electromagnetic waves propagating in layered in-homogeneous thin film media of spherical particles on a substrate, Abstract.

  1. Browse Title Index

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    Items 1 - 48 of 48 ... Journal Home > Advanced Search > Browse Title Index. Log in or Register to get access to full text ... Vol 1 (2000), Measurement of Ground Electrical Conductivity for Planning Medium Wave Radio Broadcast Stations in South Western Nigeria, Abstract PDF. Moses Oludare Ajewole, Adeseye Muyiwa ...

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    Items 251 - 300 of 513 ... Issue, Title. Vol 37, No 2 (2016), Microbial analysis of meat and meat products sold in fast food restaurants in Aba, Abia State, Nigeria, Abstract. O.R. Ezeigbo. Vol 29, No 2 (2008), Miracidial infectivity of snail host (Bulinus truncatus) in the laboratory, Abstract. CA Ekwunife, CI Eneanya, NA Ozumba, CN ...

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    Items 201 - 250 of 900 ... Issue, Title. Vol 13, No 5 (2013), Determinants of Aggregate Agricultural Productivity among High External Input Technology Farms in a Harsh Macroeconomic Environment of Imo State, Nigeria, Abstract PDF. SO Anyanwu. Vol 12, No 5 (2012), Determinants of fast food consumption in Kampala, ...

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    Issue, Title. Vol 74 (2014), Isolation, characterization and primary screening of soil actinomycetes from Kenyatta University arboretum grounds for antibacterial activities, Abstract PDF. OY Khasabuli, AN Kibera. Vol 114 (2017), Isolement par partition bio guidé du principe actif myostimulant de l'extrait aqueux de Mareya ...

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    Items 1 - 50 of 150 ... Issue, Title. Vol 14, No 2 (2005), Chlamydia trachomatis Infecion Among Apparently Healthy Students of Ambrose Alli University Ekpoma, Edo State, Nigeria, Abstract. G P Nwobu, D E Agbonlahor, A A Turay, C P Aloamaka, J P Isibor. Vol 20, No 2 (2011), In vitro Antibacterial Activity of Crude Ethanol, ...

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    Items 1 - 50 of 101 ... Issue, Title. Vol 3, No 4 (2014), Chlamydia trachomatis IgG antibodies seroprevalence among students in two tertiary institutions in Anambra state, Nigeria: a comparative study, Abstract PDF. CB Duru, FE Emele, ED Adinma, CO Ifeadike, KA Uwakwe, AO Oluboyo, BO Oluboyo, C Abejegah. Vol 2, No 1 ...

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    Items 201 - 250 of 367 ... Issue, Title. Vol 42 (2013), Nursing the Cure: A Phonetic Analysis of /ʊə/ in South African English, Abstract PDF. I Bekker. Vol 1 (1980), Nuwe ontwikkelings binne chomsky se teorle van kerngrammatika, Abstract PDF. J Maartens. Vol 42 (2013), Obligatory Reflexivity in a Minimalist Grammar of ...

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    Items 201 - 210 of 210 ... Issue, Title. Vol 12, No 1-2 (2015), Use of Mobile Phones to Support Coursework: Evidence from Wa Polytechnic, Ghana, Abstract PDF. Zakaria Ismail Mahamud, Fordjour K Andrews, Afriyie K Rockson. Vol 10, No 1-2 (2013), Violence Against Women During the 1991 Ethnic Conflicts of the East Gonja ...

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    Items 1 - 31 of 31 ... Issue, Title. Vol 4, No 2 (2007), Acute toxicity of gramoxone (paraquat-dichloride) to the fresh water catfish Clarias gariepinus (burch) post fingerlings. Abstract. G C Onuoha, JI Ukagwu. Vol 5, No 1 (2008), Acute Toxicity Of Npk (15:15:15) Fertilizer To Tilapia zilli Fingerlings, Abstract. PC Ofojekwu, CD Nwani ...

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    Items 51 - 69 of 69 ... Issue, Title. Vol 4, No 1 (2005), Teachers' classroom management variables and students' academic achievement in French in Cross River State, Nigeria, Abstract PDF. JU Emeh, CA Agbor. Vol 7, No 1&2 (2008), Terror and ambivalence of the human soul in O'neill's the Emperor Jones, and the hairy ape ...

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    Items 1 - 28 of 28 ... Issue, Title. Vol 3, No 1-2 (2008), A comparative study of the teaching and learning of physical and human geography at advanced level in rural secondary schools in Makonde district in Mashonaland West province, Abstract PDF. E. Mavhura, T. Zinyandu, T. P. Chinyanganya, D. Manatsa, A. Manyani, ...

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    Items 351 - 400 of 1463 ... Issue, Title. Vol 1, No 2 (2001), Contraceptive security, information flow, and local adaptations: Family planning Morocco, Abstract PDF. Yasmin Chandani, Gerry Breton. Vol 15, No 4 (2015), Contribution of ENPP1, TCF7L2, and FTO polymorphisms to type 2 diabetes in mixed ancestry ethnic ...

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    Items 51 - 100 of 136 ... Issue, Title. Vol 6, No 1 (2016): Special Edition, French language: A basic G.S course for Nnamdi Azikiwe University students, Abstract PDF. Scholastica Ezeodili, Olivia Ezeafulukwe. Vol 4 (2015), Governance and associated social roles of masquerades among the Igbo of southeast Nigeria in an era of ...

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    Items 101 - 150 of 272 ... Issue, Title. Vol 16, No 1 (2018), Epiphyseal plate closure of radio-ulna bone in red Sokoto goat ecotype, Abstract PDF. S.M. Atabo, A.A. Umar, S.A. Shehu, A.S. Yakubu. Vol 14, No 2 (2016), Erythrocyte stability, membrane protective and haematological activities of Newbouldia laevis in alloxan ...

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    Items 1 - 50 of 669 ... Issue, Title. Vol 32, No 4 (2002), Book review ECOMOG in West Africa, Abstract. George Mboya. Vol 32, No 4 (2002), Editorial: Sustainable peace and security, Abstract. Elizabeth le Roux. Vol 45, No 3 (2015), A Case for Industrial Policy towards Green Economy Transition in Developing Economies ...

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    Items 51 - 100 of 1789 ... Issue, Title. Vol 6, No 3 (1950), Christuslegendes, deur Selma lagerlö vertaal deur Hymne Weiss, HAUM h/a J.H de Bussy, Kaapstad-Pretoria. Prys 14,, Abstract PDF. SP Engelbrecht. Vol 11, No 2 (1955), Concordantie op den Bijbelin de Nieuwe Vertaling van het Nederlands Bijbelgenootschap.

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    Items 101 - 150 of 683 ... Issue, Title. Vol 54, No 1 (2006), Bovine tuberculosis survey in urban and peri urban dairy farms in coastal humid region of Tanga, Tanzania, Abstract. ES Swai, G Shirima, S Bwanga, W Moshy. Vol 60, No 3 (2012), Browsing capacity and nutritive value of indigenous browses in a tropical Coastal ...

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    Items 51 - 100 of 226 ... Issue, Title. Vol 17 (2000), Comparative analysis of Scandinavian and Ethiopian approaches to housing with special emphasis on housing tenure and housing finance, Abstract PDF. W Berhanu. Vol 18 (2001), Comparison Of Seismic Provisions Of EBCS 8 And Current Major Builduing Codes Pertinent ...

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    Items 51 - 98 of 98 ... Issue, Title. Vol 4, No 1 (2016), First-year seminar intervention: Enhancing firstyear mathematics performance at the University of Johannesburg, Abstract PDF. Melanie Jacobs, Estherna Pretorius. Vol 5, No 2 (2017), From Inky Pinky Ponky to Improving Student Understanding in Assessment: Exploring the ...

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    Issue, Title. Vol 43, No 2 (2006), Review: "'n Wonderlike geweld. Jeugherinneringe", By Elsa Joubert (2005), Abstract PDF. Henriette Roos. Vol 53, No 1 (2016), Review: Breyten Breytenbach, A Monologue in Two Voices, Abstract PDF. Andy Carolin. Vol 53, No 1 (2016), Review: The Shadow of the Hummingbird, Abstract ...

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    Items 151 - 200 of 211 ... Issue, Title. Vol 14, No 2 (2017), Social Cash Transfers: Some Underlying Debates and Implications for Policy Making, Abstract PDF. Moses Naiim Fuseini, Francis Enu-Kwesi, Kwabena Barima Antwi. Vol 13, No 2 (2016), Social determinants of self-care subsequent to major medical surgery at the ...

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    Issue, Title. Vol 10, No 2 (2014), Sorindeia warneckei Engl. (Anacardiaceae), une espèce multi-usagère de la dépression de la Lama au Togo, Abstract PDF. A Akodewou, S Akpavi, M Dourma, K Batawila, KB Amegnaglo, W Atakpama, K Akpagama. Vol 10, No 1 (2014), Sterculia setigera Del.: influence de quelques ...

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    Items 151 - 161 of 161 ... Issue, Title. Vol 5, No 1 (2006), The ill effect of outages on National Electric Power Authority (NEPA): Ilorin 132/33kv substation as a case study, Abstract. M R Adu. Vol 11, No 1 (2012), The Impact of Effluent Produced from Ntak Inyang and Iba Oku Slaughterhouses Environment, Abstract PDF.

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    Items 51 - 69 of 69 ... Issue, Title. Vol 9, No 1 (2007), Resistance Pattern Of Urinary Tract Infection Bacterial Isolates To Selected Quinolones, Abstract PDF. ARM Momoh, MAC Odike, S Olowo, AA Momoh, PO Okolo. Vol 10, No 1 (2008), Result Of Seroprevalence Of HIV Amonst Undergraduate Students Of Government ...

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    Items 201 - 229 of 229 ... Issue, Title. Vol 20, No 2 (2008), Study of nitrate contamination of groundwater in a part of the basement complex terrain of Ilorin, West of central Nigeria, Abstract. LI Nwankwo, YO Popoola. Vol 18, No 2 (2006), Subarcsec optical and radio obsercations of the gravitationally lensed systmen B1422 + ...

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    Items 51 - 100 of 412 ... Issue, Title. Vol 30, No 3 (2011), Bodies as open projects: reflections on gender and sexuality, Abstract. MESE van den Berg. Vol 21, No 1 (2002), Body, thought, being-human and artificial intelligence: Merleau-Ponty and Lyotard, Abstract. Bert Olivier. Vol 31, No 3 (2012), Book Review: Daniël Strauss, ...

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    Items 151 - 200 of 643 ... Issue, Title. Vol 18, No 2 (2015), Contraceptive Knowledge and Compliance with Guidelines for Providing Contraceptive Services by Patent Medicine Vendors In Ibadan North Local Government Area, Nigeria, Abstract PDF. OO Ajayi, AJ Ajuwon. Vol 16, No 2 (2013), Coping Strategy for Food Security ...

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    Items 551 - 600 of 1463 ... Issue, Title. Vol 15, No 2 (2015), Evaluation of the diagnostic performance and operational characteristics of four rapid immunochromatographic syphilis tests in Burkina Faso, Abstract PDF. FY Bocoum, H Ouedraogo, G Tarnagda, A Kiba, S Tiendrebeogo, F Bationo, B Liestman, S Diagbouga, ...

  9. ADE spectral networks and decoupling limits of surface defects

    Energy Technology Data Exchange (ETDEWEB)

    Longhi, Pietro [Department of Physics and Astronomy, Uppsala university,Uppsala (Sweden); Park, Chan Y. [NHETC and Department of Physics and Astronomy, Rutgers University,New Brunswick, NJ (United States)

    2017-02-03

    We study vacua and BPS spectra of canonical surface defects of class S theories in different decoupling limits using ADE spectral networks. In some regions of the IR moduli spaces of these 2d-4d systems, the mixing between 2d and 4d BPS states is suppressed, and the spectrum of 2d-4d BPS states becomes that of a 2d N=(2,2) theory. For some decoupling limits, we identify the 2d theories describing the surface defects with nonlinear sigma models and coset models that have been previously studied. We also study certain cases where the decoupling limit of a surface defect exhibits a set of vacua and a BPS spectrum that appear to be entirely new. A detailed analysis of these spectra and their wall-crossing behavior is performed.

  10. Decoupled Closed-Form Solution for Humanoid Lower Limb Kinematics

    Directory of Open Access Journals (Sweden)

    Alejandro Said

    2015-01-01

    Full Text Available This paper presents an explicit, omnidirectional, analytical, and decoupled closed-form solution for the lower limb kinematics of the humanoid robot NAO. The paper starts by decoupling the position and orientation analysis from the overall Denavit-Hartenberg (DH transformation matrices. Here, the joint activation sequence for the DH matrices is based on the geometry of a triangle. Furthermore, the implementation of a forward and a reversed kinematic analysis for the support and swing phase equations is developed to avoid matrix inversion. The allocation of constant transformations allows the position and orientation end-coordinate systems to be aligned with each other. Also, the redefinition of the DH transformations and the use of constraints allow decoupling the shared DOF between the legs and the torso. Finally, a geometric approach to avoid the singularities during the walking process is indicated. Numerical data is presented along with an experimental implementation to prove the validity of the analytical results.

  11. Optimally combining dynamical decoupling and quantum error correction.

    Science.gov (United States)

    Paz-Silva, Gerardo A; Lidar, D A

    2013-01-01

    Quantum control and fault-tolerant quantum computing (FTQC) are two of the cornerstones on which the hope of realizing a large-scale quantum computer is pinned, yet only preliminary steps have been taken towards formalizing the interplay between them. Here we explore this interplay using the powerful strategy of dynamical decoupling (DD), and show how it can be seamlessly and optimally integrated with FTQC. To this end we show how to find the optimal decoupling generator set (DGS) for various subspaces relevant to FTQC, and how to simultaneously decouple them. We focus on stabilizer codes, which represent the largest contribution to the size of the DGS, showing that the intuitive choice comprising the stabilizers and logical operators of the code is in fact optimal, i.e., minimizes a natural cost function associated with the length of DD sequences. Our work brings hybrid DD-FTQC schemes, and their potentially considerable advantages, closer to realization.

  12. Scaling of dynamical decoupling for a single electron spin in nanodiamonds at room temperature

    International Nuclear Information System (INIS)

    Liu, Dong-Qi; Liu, Gang-Qin; Chang, Yan-Chun; Pan, Xin-Yu

    2014-01-01

    Overcoming the spin qubit decoherence is a challenge for quantum science and technology. We investigate the decoherence process in nanodiamonds by Carr–Purcell–Meiboom–Gill (CPMG) technique at room temperature. We find that the coherence time T 2 scales as n γ . The elongation effect of coherence time can be represented by a constant power of the number of pulses n. Considering the filter function of CPMG decoupling sequence as a δ function, the spectrum density of noise has been reconstructed directly from the coherence time measurements and a Lorentzian noise power spectrum model agrees well with the experiment. These results are helpful for the application of nanodiamonds to nanoscale magnetic imaging

  13. Protected quantum computing: interleaving gate operations with dynamical decoupling sequences.

    Science.gov (United States)

    Zhang, Jingfu; Souza, Alexandre M; Brandao, Frederico Dias; Suter, Dieter

    2014-02-07

    Implementing precise operations on quantum systems is one of the biggest challenges for building quantum devices in a noisy environment. Dynamical decoupling attenuates the destructive effect of the environmental noise, but so far, it has been used primarily in the context of quantum memories. Here, we experimentally demonstrate a general scheme for combining dynamical decoupling with quantum logical gate operations using the example of an electron-spin qubit of a single nitrogen-vacancy center in diamond. We achieve process fidelities >98% for gate times that are 2 orders of magnitude longer than the unprotected dephasing time T2.

  14. A closer look at non-decoupling D-Terms

    CERN Document Server

    Staub, Florian

    2016-01-01

    Non-Decoupling D-Terms are an attractive possibility to enhance the tree-level mass of the standard model like Higgs boson in supersymmetric models. We discuss here for the case of a new Abelian gauge group two effects usually neglected in literature: (i) the size of the additional radiative corrections to the Higgs mass due to the presence of the new gauge coupling, and (ii) the impact of gauge kinetic mixing. It is shown that both effects reduce to some extent the positive effect of the non-decoupling D-terms on the Higgs mass.

  15. Soft-pulse dynamical decoupling with Markovian decoherence

    International Nuclear Information System (INIS)

    Pryadko, Leonid P.; Quiroz, Gregory

    2009-01-01

    We consider the effect of broadband decoherence on the performance of refocusing sequences, having in mind applications of dynamical decoupling in concatenation with quantum error correcting codes as the first stage of coherence protection. Specifically, we construct cumulant expansions of effective decoherence operators for a qubit driven by a pulse of a generic symmetric shape and for several sequences of π and π/2 pulses. While, in general, the performance of soft pulses in decoupling sequences in the presence of Markovian decoherence is worse than that of the ideal δ pulses, it can be substantially improved by shaping.

  16. A closer look at non-decoupling D-terms

    Directory of Open Access Journals (Sweden)

    Florian Staub

    2016-07-01

    Full Text Available Non-decoupling D-terms are an attractive possibility to enhance the tree-level mass of the standard model like Higgs boson in supersymmetric models. We discuss here for the case of a new Abelian gauge group two effects usually neglected in literature: (i the size of the additional radiative corrections to the Higgs mass due to the presence of the new gauge coupling, and (ii the impact of gauge kinetic mixing. It is shown that both effects reduce to some extent the positive effect of the non-decoupling D-terms on the Higgs mass.

  17. Simple and Efficient Decoupling of Compact Arrays With Parasitic Scatterers

    DEFF Research Database (Denmark)

    Lau, B.K.; Andersen, Jørgen Bach

    2012-01-01

    Compact arrays such as multiple antennas on a mobile terminal suffer from low efficiency and high correlation between antenna signals. In the present paper, a simple and rigorous procedure for decoupling two closely coupled antennas with a parasitic scatterer is proposed. The parasitic scatterer...... for other decoupling methods as well. Simulation and experimental results are used to substantiate the effectiveness of the proposed design approach on a two-monopole array with an antenna spacing of 0.1 wavelength. Finally, several practical considerations of the proposal are also presented, including...

  18. Browse Title Index

    African Journals Online (AJOL)

    Items 101 - 150 of 186 ... Issue, Title. Vol 9, No 3 (2017), Hunting practices and heavy metals concentrations in fresh and smoked wildmeats in Kumasi, Ghana, Abstract PDF. H.J. Ampofo, B. O. Emikpe, T.N. Asenso, D.A. Asare, R Yeboah, T.A. Jarikre, A. Jagun-Jubril. Vol 9, No 1 (2017), Impact of human wildlife conflict on ...

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    Items 101 - 150 of 312 ... Issue, Title. Vol 22, No 1-2 (2007), Effect of mefloquine on the mechanical activity of the mouse isolated rectal smooth muscle, Abstract PDF. P.C Unekwe, J.O Ogamba, K.C Chilaka, J.C Okonkwo. Vol 25, No 1 (2010), Effect of Melatonin and Caffeine Interaction on Caffeine Induced Oxidative Stress and ...

  20. State policy change: Revenue decoupling in the electricity market

    Science.gov (United States)

    McNeil, Kytson L.

    The study seeks to answer the question, why are states adopting revenue decoupling in the electricity market, by investigating the relationship between policy adoption and attributes of the electricity market, the structure of the state utility commissions, and the political climate of the state. The study examines the period 1978-2008. Two econometric models, the marginal risk set model and the conditional risk set model, are estimated to predict the influence of covariates on the probability of the state adopting revenue decoupling in the electricity market. The models are both variants of the Cox proportional hazard model and use different underlying assumptions about the nature of adoption of revenue decoupling and when the states are considered to be at risk of adoption. Results suggest that market attributes, such as the source of electricity generation in the state, state energy intensity, and the distribution of non-public and public utilities, significantly influence the adoption of the policy. Also, the method of selecting commissioners and the party affiliation of elected officials in the state are important factors. The study concludes by suggestions to improve the implementation and evaluation of revenue decoupling in the electricity markets.

  1. Decoupled systems on trial: Eliminating bottlenecks to improve aquaponic processes.

    Directory of Open Access Journals (Sweden)

    Hendrik Monsees

    Full Text Available In classical aquaponics (coupled aquaponic systems, 1-loop systems the production of fish in recirculating aquaculture systems (RAS and plants in hydroponics are combined in a single loop, entailing systemic compromises on the optimal production parameters (e.g. pH. Recently presented decoupled aquaponics (2-loop systems have been awarded for eliminating major bottlenecks. In a pilot study, production in an innovative decoupled aquaponic system was compared with a coupled system and, as a control, a conventional RAS, assessing growth parameters of fish (FCR, SGR and plants over an experimental period of 5 months. Soluble nutrients (NO3--N, NO2--N, NH4+-N, PO43-, K+, Ca2+, Mg2+, SO42-, Cl2- and Fe2+, elemental composition of plants, fish and sludge (N, P, K, Ca, Mg, Na, C, abiotic factors (temperature, pH, oxygen, and conductivity, fertilizer and water consumption were determined. Fruit yield was 36% higher in decoupled aquaponics and pH and fertilizer management was more effective, whereas fish production was comparable in both systems. The results of this pilot study clearly illustrate the main advantages of decoupled, two-loop aquaponics and demonstrate how bottlenecks commonly encountered in coupled aquaponics can be managed to promote application in aquaculture.

  2. Do 'green' taxes work? Decoupling environmental pressures and economic growth

    DEFF Research Database (Denmark)

    Andersen, Mikael Skou

    2005-01-01

    This essay intends to shed light on whether environmental taxation can help to decouple environmental pressures from economic growth, a policy outcome widely desired and particularly pressing in the context of climate change where radical measures are needed to curb CO2 build up....

  3. Analytical Methods of Decoupling the Automotive Engine Torque Roll Axis

    Science.gov (United States)

    JEONG, TAESEOK; SINGH, RAJENDRA

    2000-06-01

    This paper analytically examines the multi-dimensional mounting schemes of an automotive engine-gearbox system when excited by oscillating torques. In particular, the issue of torque roll axis decoupling is analyzed in significant detail since it is poorly understood. New dynamic decoupling axioms are presented an d compared with the conventional elastic axis mounting and focalization methods. A linear time-invariant system assumption is made in addition to a proportionally damped system. Only rigid-body modes of the powertrain are considered and the chassis elements are assumed to be rigid. Several simplified physical systems are considered and new closed-form solutions for symmetric and asymmetric engine-mounting systems are developed. These clearly explain the design concepts for the 4-point mounting scheme. Our analytical solutions match with the existing design formulations that are only applicable to symmetric geometries. Spectra for all six rigid-body motions are predicted using the alternate decoupling methods and the closed-form solutions are verified. Also, our method is validated by comparing modal solutions with prior experimental and analytical studies. Parametric design studies are carried out to illustrate the methodology. Chief contributions of this research include the development of new or refined analytical models and closed-form solutions along with improved design strategies for the torque roll axis decoupling.

  4. Active power decoupling with reduced converter stress for single ...

    Indian Academy of Sciences (India)

    SUJATA BHOWMICK

    The analysis and the simulation results are shown to prove the effectiveness of the topology. Keywords. Single phase; double-frequency ripple; active power decoupling; reduced stress; reliability. 1. Introduction. The single-phase power electronic converters interfacing a. DC storage system or a DC source have the inherent.

  5. Decoupling among CSR policies, programs, and impacts : An empirical study

    NARCIS (Netherlands)

    Graafland, Johan; Smid, Hugo

    2016-01-01

    There are relatively few empirical studies on the impacts of corporate social responsibility (CSR) policies and programs. This article addresses the research gap by analyzing the incidence of, and the conditions that affect, decoupling (defined as divergence) among CSR policies, implementation of

  6. Decoupled systems on trial: Eliminating bottlenecks to improve aquaponic processes.

    Science.gov (United States)

    Monsees, Hendrik; Kloas, Werner; Wuertz, Sven

    2017-01-01

    In classical aquaponics (coupled aquaponic systems, 1-loop systems) the production of fish in recirculating aquaculture systems (RAS) and plants in hydroponics are combined in a single loop, entailing systemic compromises on the optimal production parameters (e.g. pH). Recently presented decoupled aquaponics (2-loop systems) have been awarded for eliminating major bottlenecks. In a pilot study, production in an innovative decoupled aquaponic system was compared with a coupled system and, as a control, a conventional RAS, assessing growth parameters of fish (FCR, SGR) and plants over an experimental period of 5 months. Soluble nutrients (NO3--N, NO2--N, NH4+-N, PO43-, K+, Ca2+, Mg2+, SO42-, Cl2- and Fe2+), elemental composition of plants, fish and sludge (N, P, K, Ca, Mg, Na, C), abiotic factors (temperature, pH, oxygen, and conductivity), fertilizer and water consumption were determined. Fruit yield was 36% higher in decoupled aquaponics and pH and fertilizer management was more effective, whereas fish production was comparable in both systems. The results of this pilot study clearly illustrate the main advantages of decoupled, two-loop aquaponics and demonstrate how bottlenecks commonly encountered in coupled aquaponics can be managed to promote application in aquaculture.

  7. Poor title--poor manuscript?

    Science.gov (United States)

    Gjersvik, Petter; Gulbrandsen, Pål; Aasheim, Erlend T; Nylenna, Magne

    2013-12-10

    The title of a scientific article is important for several reasons. Does the title of a manuscript submitted for publication in a medical journal reflect the quality of the manuscript itself? We prepared criteria for poor, fair and good titles and tested them in pilot studies. All manuscripts submitted to the Journal of the Norwegian Medical Association during the period 1 September 2009-31 August 2011 as original articles (n = 211) or review articles (n = 110) were recorded. The quality of the titles was scored by two former editors. Primary outcome measures were rejection rates and odds ratio for rejection of manuscripts with a poor title compared to those with a good title. For original articles, the rejection rate for manuscripts with a poor, fair or good title amounted to 88%, 73% and 61% (p = 0.002) respectively, and for review articles 83%, 56% and 38% (p title compared to those with a good title was 4.6 (95% CI: 1.7-12.3) for original articles and 8.2 (95% CI: 2.6-26.4) for review articles. In a logistic regression model, the quality of the title explained 14% and 27% of the variance in outcome for original articles and review articles respectively. In this study, a poor manuscript title was significantly associated with manuscript rejection. This indicates that the quality of the title often reflects the quality of the manuscript itself.

  8. Unmasking decoupling: Redefining the Resource Intensity of the Economy.

    Science.gov (United States)

    Bithas, Kostas; Kalimeris, Panos

    2018-04-01

    Interest in investigating the complex link between resources and developments has revived recently following studies which support striking "dematerialized" growth over the last hundred years or so. This so-called decoupling effect is defined as the declining quantity of resources required for producing one unit of GDP. Decoupling studies adopt aggregate GDP as the measure of the outcome of the economy. However, this outcome is contributed by the total population which differs over time and between countries. A valid comparison should use a comparable, standardized indicator that adjusts for population size. GDP per capita, the income index, defines in monetary terms the ultimate outcome of the economy and is adopted by international organizations as the standard index for comparing economies. The income index approximates, in monetary terms, the welfare produced by the economic system and enjoyed by individuals. Recently developed alternative indexes of welfare lack broad data coverage and have limited empirical application as yet. For this reason and for ensuring direct comparison with the standard decoupling estimates, our study remains within the monetary context. The present paper re-evaluates the resources-economy link from the perspective of "the resources required for the production of one unit of GDP per capita (Income)" and hence evaluates the efficiency of turning resources into the actual outcome of the economic system. Our estimates suggest that the dependence of global economic growth on natural resources has increased by over 60% in the last 110years (1900-2009), contrasting with the prevailing decoupling estimates which suggest a reduction by 63%. We find that the actual decoupling, which began in the mid-1970s in post-industrial economies, is counterbalanced by the intensified resource intensity of several developing economies. Accordingly, in the pursuit of sustainability, the dematerialization target needs to be more clearly incorporated into

  9. Refocused continuous-wave decoupling: A new approach to heteronuclear dipolar decoupling in solid-state NMR spectroscopy

    DEFF Research Database (Denmark)

    Vinther, Joachim Møllesøe; Nielsen, Anders B.; Bjerring, Morten

    2012-01-01

    A novel strategy for heteronuclear dipolar decoupling in magic-angle spinning solid-state NMR spectroscopy is presented, which eliminates residual static high-order terms in the effective Hamiltonian originating from interactions between oscillating dipolar and anisotropic shielding tensors. The ...

  10. Vortex-strings in N=2 SQCD and bulk-string decoupling

    Science.gov (United States)

    Gerchkovitz, Efrat; Karasik, Avner

    2018-02-01

    We study vortex-strings in four-dimensional N=2 supersymmetric SU( N c ) × U(1) gauge theories with N f hypermultiplets in the fundamental representation of SU( N c ) and general U(1) charges. If N f > N c , the vacuum is not gapped and the low-energy theory contains both the vacuum massless excitations and the string zero-modes. The question we address in this work is whether the vacuum and the string moduli decouple at low energies, allowing a description of the low-energy dynamics in terms of a two-dimensional theory on the string worldsheet. We find a simple condition controlling the bulk-string coupling: if there exist two flavors such that the product of their U(1) charge difference with the magnetic flux carried by the string configuration is not an integer multiple of 2 π, the string has zero-modes that decay slower than 1 /r, where r is the radial distance from the string core. These modes are coupled to the vacuum massless excitations even at low energies. If, however, all such products are integer multiples of 2 π, long-range modes of this type do not exist and the string moduli decouple from the bulk at low energies. This condition turns out to coincide with the condition of trivial Aharonov-Bohm phases for the particles in the spectrum. In addition to a derivation of the bulk-string decoupling criterion using classical analysis of the string zero-modes, we provide a non-perturbative derivation of the criterion, which uses supersymmetric localization techniques.

  11. A Fast-Processing Modulation Strategy for Three-Phase Four-Leg Neutral-Point-Clamped Inverter Based on the Circuit-Level Decoupling Concept

    DEFF Research Database (Denmark)

    Ghoreishy, Hoda; Zhang, Zhe; Thomsen, Ole Cornelius

    2012-01-01

    In this paper, a modulation strategy based on the circuit-level decoupling concept is proposed and investigated for the three-level four-leg neutral-point-clamped (NPC) inverter,with the aim of delivering power to all sorts of loads, linear/nonlinear and balanced/unbalanced. By applying...... the proposed modulation strategy, the four-leg NPC inverter can be decoupled into three three-level Buck converters in each defined operating section. This makes the controller design much simpler compared to the conventional four-leg NPC inverter controllers. Also, this technique can be implemented...

  12. De-coupling of blood flow and metabolism in the rat brain induced by glutamate

    International Nuclear Information System (INIS)

    Hirose, Shinichiro; Momosaki, Sotaro; Sasaki, Kazunari; Hosoi, Rie; Abe, Kohji; Inoue, Osamu; Gee, A.

    2009-01-01

    Glutamate plays an essential role in neuronal cell death in many neurological disorders. In this study, we examined both glucose metabolism and cerebral blood flow in the same rat following infusion of glutamate or ibotenic acid using the dual-tracer technique. The effects of MK-801, an N-methyl-D-aspartate (NMDA) receptor antagonist, and 1,2,3,4-tetrahydro-6-nitro-2,3-dioxo-benzo[f]quinoxaline-7-sulfonamide (NBQX), an α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA)-kainate receptor antagonist, on the changes in the glucose metabolism and cerebral blood flow induced by glutamate were also examined. The rats were microinjected with glutamate (1 μmol/μl, 2 μl) or ibotenic acid (10 μg/μl, 1 μl) into the right striatum, and dual-tracer autoradiograms of [ 18 F]fluorodeoxyglucose (FDG) and [ 14 C]iofetamine (IMP) were obtained. MK-801 and NBQX were injected intravenously about 45 and 30 min, respectively, after the infusion of glutamate. De-coupling of blood flow and metabolism was noted in the glutamate-infused hemisphere (as assessed by no alteration of [ 18 F]FDG uptake and significant decrease of [ 14 C]IMP uptake). Pretreatments with MK-801, NBQX, or combined use of MK-801 and NBQX did not affect the de-coupling of the blood flow and metabolism induced by glutamate. A histochemical study revealed that about 20% neuronal cell death had occurred in the striatum at 105 min after the infusion of glutamate. In addition, a significant increase of the [ 18 F]FDG uptake and decrease of [ 14 C]IMP uptake were also seen in the rat brain infused with ibotenic acid. These results indicate that glutamate and ibotenic acid caused a significant de-coupling of blood flow and glucose metabolism in the intact rat brain during the early phase of neurodegeneration. It is necessary to evaluate the relation between metabotropic glutamate receptors and de-coupling of blood flow and metabolism. (author)

  13. Reliability-based optimal structural design by the decoupling approach

    International Nuclear Information System (INIS)

    Royset, J.O.; Der Kiureghian, A.; Polak, E.

    2001-01-01

    A decoupling approach for solving optimal structural design problems involving reliability terms in the objective function, the constraint set or both is discussed and extended. The approach employs a reformulation of each problem, in which reliability terms are replaced by deterministic functions. The reformulated problems can be solved by existing semi-infinite optimization algorithms and computational reliability methods. It is shown that the reformulated problems produce solutions that are identical to those of the original problems when the limit-state functions defining the reliability problem are affine. For nonaffine limit-state functions, approximate solutions are obtained by solving series of reformulated problems. An important advantage of the approach is that the required reliability and optimization calculations are completely decoupled, thus allowing flexibility in the choice of the optimization algorithm and the reliability computation method

  14. A Fully Symmetric and Completely Decoupled MEMS-SOI Gyroscope

    Directory of Open Access Journals (Sweden)

    Abdelhameed SHARAF

    2011-04-01

    Full Text Available This paper introduces a novel MEMS gyroscope that is capable of exciting the drive mode differentially. The structure also decouples the drive and sense modes via an intermediate mass and decoupling beams. Both drive and sense modes are fully differential enabling control over the zero-rate-output for the former and maximizing output sensitivity using a bridge circuit for the latter. Further, the structure is fully symmetric about the x- and y- axes which results in minimizing the temperature sensitivity problem. Complete analytical analysis based on the equations of motion was performed and verified using two commercially available finite element software packages. Results from both methods are in good agreement. The analysis of the sensor shows an electrical sensitivity of 1.14 (mV/(º/s. The gyroscope was fabricated using single mask and deep reactive ion etching. The measurement of the resonance frequency performed showing a good agreement with the analytical and numerical analysis.

  15. Principle of Global Decoupling with Coupling Angle Modulation

    CERN Document Server

    Luo, Yun; Pilat, Fulvia Caterina; Roser, Thomas; Trbojevic, Dejan

    2005-01-01

    The global betatron decoupling on the ramp is an important issue for the operation of the Relativistic Heavy Ion Collider (RHIC). A new scheme coupling phase modulation is found. It introduces a rotating extra coupling into the coupled machine to detect the residual coupling. The eigentune responses are measured with a high resolution phase lock loop (PLL) system. From the minimum and maximum tune splits, the correction strengths are given. The time period occupied by one coupling phase modulation is less than 10 seconds. So it is a very promising solution for the global decoupling on the ramp. In this article the principle of the coupling phase modulation is given. The simulation with the smooth accelerator model is also done. The practical issues concerning its applications are discussed.

  16. A geometrical approach to dynamical decoupling with smooth pulses

    Science.gov (United States)

    Zeng, Junkai; Deng, Xiuhao; Barnes, Edwin

    In order to perform high-fidelity quantum information processing, reducing the effects of noise is an essential task. It is well known that a system can be decoupled from noise dynamically by using carefully designed pulse sequences based on delta-function or square waveforms such as spin echo or CPMG. However, such ideal pulses are often challenging to implement experimentally with high fidelity. We present an analytical approach that enables one to generate an unlimited number of smooth, experimentally feasible pulses that perform dynamical decoupling or dynamically corrected gates. Our method is based on a simple geometric picture that facilitates the identification of driving fields that cancel errors in the single-qubit evolution operator to second order or beyond. We demonstrate that this scheme can significantly enhance the fidelity of single-qubit gates in the case of noise with a 1/f power spectrum.

  17. Adaptive decoupled power control method for inverter connected DG

    DEFF Research Database (Denmark)

    Sun, Xiaofeng; Tian, Yanjun; Chen, Zhe

    2014-01-01

    an adaptive droop control method based on online evaluation of power decouple matrix for inverter connected distributed generations in distribution system. Traditional decoupled power control is simply based on line impedance parameter, but the load characteristics also cause the power coupling, and alter......The integration of renewable energy technology is making the power distribution system more flexible, but also introducing challenges for traditional technology. With the nature of intermittent and less inertial, renewable energy-based generations need effective control methods to cooperate...... with other devices, such as storage, loads and the utility grid. The widely used power frequency (P–f) droop control is based on the precondition of inductive line impedance, but the low-voltage system is mainly resistive, and also the different load character needs to be considered. This study presents...

  18. General solution to inhomogeneous dephasing and smooth pulse dynamical decoupling

    Science.gov (United States)

    Zeng, Junkai; Deng, Xiu-Hao; Russo, Antonio; Barnes, Edwin

    2018-03-01

    In order to achieve the high-fidelity quantum control needed for a broad range of quantum information technologies, reducing the effects of noise and system inhomogeneities is an essential task. It is well known that a system can be decoupled from noise or made insensitive to inhomogeneous dephasing dynamically by using carefully designed pulse sequences based on square or delta-function waveforms such as Hahn spin echo or CPMG. However, such ideal pulses are often challenging to implement experimentally with high fidelity. Here, we uncover a new geometrical framework for visualizing all possible driving fields, which enables one to generate an unlimited number of smooth, experimentally feasible pulses that perform dynamical decoupling or dynamically corrected gates to arbitrarily high order. We demonstrate that this scheme can significantly enhance the fidelity of single-qubit operations in the presence of noise and when realistic limitations on pulse rise times and amplitudes are taken into account.

  19. Power corrections from decoupling of the charm quark

    Science.gov (United States)

    Knechtli, Francesco; Korzec, Tomasz; Leder, Björn; Moir, Graham; Alpha Collaboration

    2017-11-01

    Decoupling of heavy quarks at low energies can be described by means of an effective theory as shown by S. Weinberg in Ref. [1]. We study the decoupling of the charm quark by lattice simulations. We simulate a model, QCD with two degenerate charm quarks. In this case the leading order term in the effective theory is a pure gauge theory. The higher order terms are proportional to inverse powers of the charm quark mass M starting at M-2. Ratios of hadronic scales are equal to their value in the pure gauge theory up to power corrections. We show, by precise measurements of ratios of scales defined from the Wilson flow, that these corrections are very small and that they can be described by a term proportional to M-2 down to masses in the region of the charm quark mass.

  20. Advanced control functions of decoupled electro-hydraulic brake system

    OpenAIRE

    Savitski, Dzmitry; Ivanov, Valentin; Schleinin, Dmitrij; Augsburg, Klaus; Pütz, Thomas; Lee, Chih Feng

    2016-01-01

    The paper presents results of analytical and experimental investigations on advanced control functions of decoupled electro-hydraulic brake system. These functions address continuous wheel slip control, variation of the brake pedal feel, and brake judder compensation. The performed study demonstrates that the electro-hydraulic brake system has improved performance by relevant criteria of safety and driving comfort both for conventional and electric vehicles.

  1. Decoupled control for internal combustion engines research test beds

    OpenAIRE

    López Hincapié, José David; Espinosa Oviedo, Jairo José; Agudelo Santamaría, John Ramiro

    2011-01-01

    This article presents a solid and robust automation model which has been developed and implemented in two different research engine test beds which were instrumented, one for diesel and the other one for spark ignition engines. The model, programmed in Matlab, is based on transfer functions with a decoupled (two single input single output systems) independent proportional and integral action controller that allows setting the desired engine speed and torque under stationary operation conditio...

  2. Development of a Theoretical Decoupled Stirling Cycle Engine

    OpenAIRE

    Cullen, Barry; McGovern, Jim

    2009-01-01

    The Stirling cycle engine is gaining increasing attention in the current energy market as a clean, quiet and versatile prime mover for use in such situations as solar thermal generation, micro cogeneration and other micro distributed generation situations. A theoretical Stirling cycle engine model is developed. Using a theoretical decoupled engine configuration in which working space swept volume, volume variation, phase angle and dead space ratio are controlled via a black-box electronic con...

  3. What makes a good title?

    Science.gov (United States)

    Grant, Maria J

    2013-12-01

    The chances are the first thing you when you set out to write an article is the title. But what factors transform a mediocre title into a good title? Firstly, it should be both informative and specific, using words or phrases likely to be used when searching for information, for example 'nurse education' rather than simply 'nurse'. Secondly, it should be concise yet convey the main ideas clearly; articles with short titles reporting study findings have been found to attract higher numbers of viewing and citations. Thirdly, provide details of the study design to assist the reader in making an informed choice about the type of project your article is reporting. In taking these small steps when developing your title, your title can present a more concise, retrievable and clear articulation of your article. © 2013 The authors. Health Information and Libraries Journal © 2013 Health Libraries Group.

  4. High magnetic field ohmically decoupled non-contact technology

    Science.gov (United States)

    Wilgen, John [Oak Ridge, TN; Kisner, Roger [Knoxville, TN; Ludtka, Gerard [Oak Ridge, TN; Ludtka, Gail [Oak Ridge, TN; Jaramillo, Roger [Knoxville, TN

    2009-05-19

    Methods and apparatus are described for high magnetic field ohmically decoupled non-contact treatment of conductive materials in a high magnetic field. A method includes applying a high magnetic field to at least a portion of a conductive material; and applying an inductive magnetic field to at least a fraction of the conductive material to induce a surface current within the fraction of the conductive material, the surface current generating a substantially bi-directional force that defines a vibration. The high magnetic field and the inductive magnetic field are substantially confocal, the fraction of the conductive material is located within the portion of the conductive material and ohmic heating from the surface current is ohmically decoupled from the vibration. An apparatus includes a high magnetic field coil defining an applied high magnetic field; an inductive magnetic field coil coupled to the high magnetic field coil, the inductive magnetic field coil defining an applied inductive magnetic field; and a processing zone located within both the applied high magnetic field and the applied inductive magnetic field. The high magnetic field and the inductive magnetic field are substantially confocal, and ohmic heating of a conductive material located in the processing zone is ohmically decoupled from a vibration of the conductive material.

  5. Decoupling analysis and socioeconomic drivers of environmental pressure in China.

    Science.gov (United States)

    Liang, Sai; Liu, Zhu; Crawford-Brown, Douglas; Wang, Yafei; Xu, Ming

    2014-01-21

    China's unprecedented change offers a unique opportunity for uncovering relationships between economic growth and environmental pressure. Here we show the trajectories of China's environmental pressure and reveal underlying socioeconomic drivers during 1992-2010. Mining and manufacturing industries are the main contributors to increasing environmental pressure from the producer perspective. Changes in urban household consumption, fixed capital formation, and exports are the main drivers from the consumer perspective. While absolute decoupling is not realized, China has in general achieved relative decoupling between economic growth and environmental pressure. China's decoupling performance has four distinguishable periods, closely aligning with nation-wide major policy adjustments, which indicates significant impact of China's national socioeconomic policies on its environmental pressure. Material intensity change is the main contributor to the mitigation of environmental pressure, except for ammonia nitrogen, solid wastes, aquatic Cu, and aquatic Zn. Production structure change is the largest contributor to mitigate ammonia nitrogen emissions, and final demand structure change is the largest contributor to mitigate emissions of solid wastes, aquatic Cu, and aquatic Zn. We observe materialization trends for China's production structure and final demand structure during 2002-2007. Environmental sustainability can only be achieved by timely technology innovation and changes of production structure and consumption pattern.

  6. Quantifying the ice-albedo feedback through decoupling

    Science.gov (United States)

    Kravitz, B.; Rasch, P. J.

    2017-12-01

    The ice-albedo feedback involves numerous individual components, whereby warming induces sea ice melt, inducing reduced surface albedo, inducing increased surface shortwave absorption, causing further warming. Here we attempt to quantify the sea ice albedo feedback using an analogue of the "partial radiative perturbation" method, but where the governing mechanisms are directly decoupled in a climate model. As an example, we can isolate the insulating effects of sea ice on surface energy and moisture fluxes by allowing sea ice thickness to change but fixing Arctic surface albedo, or vice versa. Here we present results from such idealized simulations using the Community Earth System Model in which individual components are successively fixed, effectively decoupling the ice-albedo feedback loop. We isolate the different components of this feedback, including temperature change, sea ice extent/thickness, and air-sea exchange of heat and moisture. We explore the interactions between these different components, as well as the strengths of the total feedback in the decoupled feedback loop, to quantify contributions from individual pieces. We also quantify the non-additivity of the effects of the components as a means of investigating the dominant sources of nonlinearity in the ice-albedo feedback.

  7. Current Decoupling Control Strategy of Medium Voltage Cascaded Multilevel STATCOM

    Directory of Open Access Journals (Sweden)

    Zhao Xuehua

    2014-10-01

    Full Text Available As one of effective regulation methods, static synchronous compensator (STATCOM has been widespread used to regulate dynamic reactive power and solve dynamic voltage stability problems into power-grid. Through the analysis of mathematical model, cascaded STATCOM, which is constructed by several cascaded H-bridges, is a nonlinear, multivariable, strongly coupled system. It will make difficulties in the design and practical application of controller. In this paper, mathematical models of cascaded STATCOM in a -b- c and d-q coordinates are deduced. Based on the theory of internal model control and PI control strategy, the internal decoupling control algorithm is introduced to realize independent control of active current and reactive current. At the same time, decoupling control algorithms are designed and decoupling control models are given and simulated. From the combined circuit topology and control with multi-FPGA, the simulation and experimental platform of cascaded SVG, which use the control algorithms of double-loop control with the current inner loop and capacitor voltage outer loop. Both in a-b-c coordinates and d-q-0 coordinates, experiment and simulation results show that three-phase current of STATCOM has good tracking performance and control precision, which show the regulator design method and parameters setting are feasible and effective.

  8. Browse Title Index

    African Journals Online (AJOL)

    Items 151 - 200 of 2157 ... Vol 30 (2000): Supplement 1, An evaluation of the Daisy II-220 technique for determining in vitro digestibility of animal feeds in comparison with the Minson & McLeod technique, Abstract PDF. M. De Figueiredo, A. Mbhele, J. Zondi. Vol 17, No 2 (1987), An evaluation of the lamb and mutton carcase ...

  9. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 50 of 158 ... K Anagnostakos, O Lorbach, P Orth, K Koch. Vol 4, No 1 (2012), A simple technique for safe mesenteric defect closure following bowel resection, Abstract PDF. YA Al-Abed, K Lafferty, V Kosmoliaptsis. Vol 1, No 1 (2009), A Technique to Avoid the Marginal Artery During Divided Colostomy in Neonates ...

  10. Multi-sectoral decomposition in decoupling industrial growth from carbon emissions in the developed Jiangsu Province, China

    International Nuclear Information System (INIS)

    Lu, Qinli; Yang, Hong; Huang, Xianjin; Chuai, Xiaowei; Wu, Changyan

    2015-01-01

    ICE (Industrial carbon emission) is one of most important sources of anthropogenic carbon emissions. To reduce the carbon emissions, many countries, particularly China, have adjusted their industrial structures and improved energy efficiency. The complete decomposition technique and decoupling method were used to investigate and quantitatively analyze the main factors influencing the energy-related ICE in Jiangsu, the Chinese province with the largest energy consumption and carbon emissions. The importance of the sectoral dimension was taken into account by dividing the industry into three main departments consisting of 38 sub-sectors. The results indicated that the industry of Jiangsu was in a weak decoupling state from 2005 to 2012. The industrial output growth was the biggest driver of the increase in ICE, while energy efficiency advancement was the main cause for the reduction, in a weakening trend. The year of 2008 was an important breaking point when the optimization of industry structure came into play and global financial crisis took place. The biggest dilemma in Jiangsu is heavy industry is still dominant, especially the five sectors of them made the biggest contribution (88.2%) to ICE. Thankfully, there were five manufacturing industries had achieved low carbon economy at various degrees. - Highlights: • Multi-sectoral decomposition and decoupling were conducted to evaluate the ICE. • The industry of Jiangsu was in a weak decoupling state with an increasing trend. • The industrial output growth was the biggest driver for ICE from 2005 to 2012. • The optimization of industry structure came into play for the reduction since 2008. • Five backward and advanced industries were identified

  11. Method for decoupling error correction from privacy amplification

    International Nuclear Information System (INIS)

    Lo, Hoi-Kwong

    2003-01-01

    In a standard quantum key distribution (QKD) scheme such as BB84, two procedures, error correction and privacy amplification, are applied to extract a final secure key from a raw key generated from quantum transmission. To simplify the study of protocols, it is commonly assumed that the two procedures can be decoupled from each other. While such a decoupling assumption may be valid for individual attacks, it is actually unproven in the context of ultimate or unconditional security, which is the Holy Grail of quantum cryptography. In particular, this means that the application of standard efficient two-way error-correction protocols like Cascade is not proven to be unconditionally secure. Here, I provide the first proof of such a decoupling principle in the context of unconditional security. The method requires Alice and Bob to share some initial secret string and use it to encrypt their communications in the error correction stage using one-time-pad encryption. Consequently, I prove the unconditional security of the interactive Cascade protocol proposed by Brassard and Salvail for error correction and modified by one-time-pad encryption of the error syndrome, followed by the random matrix protocol for privacy amplification. This is an efficient protocol in terms of both computational power and key generation rate. My proof uses the entanglement purification approach to security proofs of QKD. The proof applies to all adaptive symmetric methods for error correction, which cover all existing methods proposed for BB84. In terms of the net key generation rate, the new method is as efficient as the standard Shor-Preskill proof

  12. Scaling of dynamical decoupling for a single electron spin in nanodiamonds at room temperature

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Dong-Qi; Liu, Gang-Qin; Chang, Yan-Chun; Pan, Xin-Yu, E-mail: xypan@aphy.iphy.ac.cn

    2014-01-01

    Overcoming the spin qubit decoherence is a challenge for quantum science and technology. We investigate the decoherence process in nanodiamonds by Carr–Purcell–Meiboom–Gill (CPMG) technique at room temperature. We find that the coherence time T{sub 2} scales as n{sup γ}. The elongation effect of coherence time can be represented by a constant power of the number of pulses n. Considering the filter function of CPMG decoupling sequence as a δ function, the spectrum density of noise has been reconstructed directly from the coherence time measurements and a Lorentzian noise power spectrum model agrees well with the experiment. These results are helpful for the application of nanodiamonds to nanoscale magnetic imaging.

  13. Supercritical water gasification with decoupled pressure and heat transfer modules

    KAUST Repository

    Dibble, Robert

    2017-09-14

    The present invention discloses a system and method for supercritical water gasification (SCWG) of biomass materials wherein the system includes a SCWG reactor and a plurality of heat exchangers located within a shared pressurized vessel, which decouples the function of containing high pressure from the high temperature function. The present invention allows the heat transfer function to be conducted independently from the pressure transfer function such that the system equipment can be designed and fabricated in manner that would support commercial scaled-up SCWG operations. By using heat exchangers coupled to the reactor in a series configuration, significant efficiencies are achieved by the present invention SCWG system over prior known SCWG systems.

  14. Decoupling interrelated parameters for designing high performance thermoelectric materials.

    Science.gov (United States)

    Xiao, Chong; Li, Zhou; Li, Kun; Huang, Pengcheng; Xie, Yi

    2014-04-15

    The world's supply of fossil fuels is quickly being exhausted, and the impact of their overuse is contributing to both climate change and global political unrest. In order to help solve these escalating problems, scientists must find a way to either replace combustion engines or reduce their use. Thermoelectric materials have attracted widespread research interest because of their potential applications as clean and renewable energy sources. They are reliable, lightweight, robust, and environmentally friendly and can reversibly convert between heat and electricity. However, after decades of development, the energy conversion efficiency of thermoelectric devices has been hovering around 10%. This is far below the theoretical predictions, mainly due to the interdependence and coupling between electrical and thermal parameters, which are strongly interrelated through the electronic structure of the materials. Therefore, any strategy that balances or decouples these parameters, in addition to optimizing the materials' intrinsic electronic structure, should be critical to the development of thermoelectric technology. In this Account, we discuss our recently developed strategies to decouple thermoelectric parameters for the synergistic optimization of electrical and thermal transport. We first highlight the phase transition, which is accompanied by an abrupt change of electrical transport, such as with a metal-insulator and semiconductor-superionic conductor transition. This should be a universal and effective strategy to optimize the thermoelectric performance, which takes advantage of modulated electronic structure and critical scattering across phase transitions to decouple the power factor and thermal conductivity. We propose that solid-solution homojunction nanoplates with disordered lattices are promising thermoelectric materials to meet the "phonon glass electron crystal" approach. The formation of a solid solution, coupled with homojunctions, allows for

  15. DQ reference frame modeling and control of single-phase active power decoupling circuits

    DEFF Research Database (Denmark)

    Tang, Yi; Qin, Zian; Blaabjerg, Frede

    2015-01-01

    Power decoupling circuits can compensate the inherent double line frequency ripple power in single-phase systems and greatly facilitate their dc-link capacitor design. Example applications of power decoupling circuit include photovoltaic, light-emitting diode, fuel cell, and motor drive systems....... This paper presents the dq synchronous reference frame modeling of single-phase power decoupling circuits and a complete model describing the dynamics of dc-link ripple voltage is presented. The proposed model is universal and valid for both inductive and capacitive decoupling circuits, and the input...... of decoupling circuits can be either dependent or independent of its front-end converters. Based on this model, a dq synchronous reference frame controller is designed which allows the decoupling circuit to operate in two different modes because of the circuit symmetry. Simulation and experimental results...

  16. A generalized theoretical framework for the description of spin decoupling in solid-state MAS NMR: Offset effect on decoupling performance.

    Science.gov (United States)

    Tan, Kong Ooi; Agarwal, Vipin; Meier, Beat H; Ernst, Matthias

    2016-09-07

    We present a generalized theoretical framework that allows the approximate but rapid analysis of residual couplings of arbitrary decoupling sequences in solid-state NMR under magic-angle spinning conditions. It is a generalization of the tri-modal Floquet analysis of TPPM decoupling [Scholz et al., J. Chem. Phys. 130, 114510 (2009)] where three characteristic frequencies are used to describe the pulse sequence. Such an approach can be used to describe arbitrary periodic decoupling sequences that differ only in the magnitude of the Fourier coefficients of the interaction-frame transformation. It allows a ∼100 times faster calculation of second-order residual couplings as a function of pulse sequence parameters than full spin-dynamics simulations. By comparing the theoretical calculations with full numerical simulations, we show the potential of the new approach to examine the performance of decoupling sequences. We exemplify the usefulness of this framework by analyzing the performance of commonly used high-power decoupling sequences and low-power decoupling sequences such as amplitude-modulated XiX (AM-XiX) and its super-cycled variant SC-AM-XiX. In addition, the effect of chemical-shift offset is examined for both high- and low-power decoupling sequences. The results show that the cross-terms between the dipolar couplings are the main contributions to the line broadening when offset is present. We also show that the SC-AM-XIX shows a better offset compensation.

  17. Decoupled Scheme for Time-Dependent Natural Convection Problem II: Time Semidiscreteness

    Directory of Open Access Journals (Sweden)

    Tong Zhang

    2014-01-01

    stability and the corresponding optimal error estimates are presented. Furthermore, a decoupled numerical scheme is proposed by decoupling the nonlinear terms via temporal extrapolation; optimal error estimates are established. Finally, some numerical results are provided to verify the performances of the developed algorithms. Compared with the coupled numerical scheme, the decoupled algorithm not only keeps good accuracy but also saves a lot of computational cost. Both theoretical analysis and numerical experiments show the efficiency and effectiveness of the decoupled method for time-dependent natural convection problem.

  18. Accuracy of dynamical-decoupling-based spectroscopy of Gaussian noise

    Science.gov (United States)

    Szańkowski, Piotr; Cywiński, Łukasz

    2018-03-01

    The fundamental assumption of dynamical-decoupling-based noise spectroscopy is that the coherence decay rate of qubit (or qubits) driven with a sequence of many pulses, is well approximated by the environmental noise spectrum spanned on frequency comb defined by the sequence. Here we investigate the precise conditions under which this commonly used spectroscopic approach is quantitatively correct. To this end we focus on two representative examples of spectral densities: the long-tailed Lorentzian, and finite-ranged Gaussian—both expected to be encountered when using the qubit for nanoscale nuclear resonance imaging. We have found that, in contrast to Lorentz spectrum, for which the corrections to the standard spectroscopic formulas can easily be made negligible, the spectra with finite range are more challenging to reconstruct accurately. For Gaussian line shape of environmental spectral density, direct application of the standard dynamical-decoupling-based spectroscopy leads to erroneous attribution of long-tail behavior to the reconstructed spectrum. Fortunately, artifacts such as this, can be completely avoided with the simple extension to standard reconstruction method.

  19. Anthropocene Dialogues: Decoupling Economic Prosperity from Carbon Emissions

    Science.gov (United States)

    Tewksbury, J.; Kohm, K.

    2017-12-01

    Anthropocene magazine is a new science magazine produced by Future Earth. Its mission is to bring together the world's leading scientists, technologists, and creatives to explore on-the-ground stories of sustainability science in action. For AGU 2017, Anthropocene magazine will stage an "Anthropocene Dialogue" based on its July 2017 issue. Anthropocene Dialogues are panel discussions about the successes and challenges of transformative science-policy collaborations by leading science journalists, researchers, and practitioners. The focus of this dialogue is: What are the scientific and technological innovations that drive the decarbonization of economies—from plugging artificial intelligence into electrical grids to new experiments in solar geoengineering. Panelist include: Robert Jackson of the Global Carbon Project discussing the historic decoupling of carbon emissions from GDP, Oliver Morton of The Economist speaking on how geoengineering can be a key element of a decoupling process; Robinson Meyer of The Atlantic outlining a coal "retirement plan" based on supply side economics; Wayt Gibbs of Scientific American tackling the quintessential question, How much energy will the world need? and Mark Harris of IEEE Spectrum looking at new experiments in artificial intelligence that could pull fossil fuels out of electrical grids, factories, data centers, and transit systems. For more information on these stories, visit: anthropocenemagazine.org/in-print/. Free sample copies of the magazine will be available at the session.

  20. Decoupling - past trends and prospects for the future

    International Nuclear Information System (INIS)

    Azar, Christian; Holmberg, John; Karlsson, Sten

    2002-05-01

    There are widespread demands in society for a de materialization or decoupling of economic growth from environmental impact. Calls are being made for eco-efficiency and/or an improvement of resource efficiency by a factor of 10. At the same time, some analysts claim there is an environmental Kuznet's curve that supposedly implies a fall in environmental pressure, as we get richer. An improvement in the environmental situation has already been observed in many cases, but there are also many areas where the situation is deteriorating. The purpose of this report is to summarize some key trends of energy and material use over time in both developing and developed countries. We have focused on Sweden, the EU, Japan and the USA as well as China, India and Brazil. The main findings in this paper can be summarized as follows: Absolute emissions of CO 2 have been increasing in most countries and periods studied. Some countries have experienced periods with constant or even falling emissions, but this is the exception rather than the rule, and it has been triggered by oil crises or economic recessions. In order to stabilize atmospheric CO 2 concentrations, CO 2 emissions have to be decoupled much more rapidly than has been the case in the past, and it is extremely unlikely that this will happen by itself. There was some decoupling of CO 2 emissions from GDP in the major economies of the world from 1970 to 1998 in the EU, Japan and the US as well as in some major developing countries such as China, although India actually increased its emissions over GDP by 1.4 per cent/yr over this period. The drop in CO 2 intensity has been prompted by some decoupling of energy from GDP and CO 2 from energy, the latter being a consequence of an increased use of natural gas and nuclear power. In the South, fossil CO 2 per energy tends to increase from rather low levels. With industrialization, the proportion of biomass drops and the proportion of fossil energy rises in the energy supply mix

  1. Private quantum decoupling and secure disposal of information

    International Nuclear Information System (INIS)

    Buscemi, Francesco

    2009-01-01

    Given a bipartite system, correlations between its subsystems can be understood as the information that each one carries about the other. In order to give a model-independent description of secure information disposal, we propose the paradigm of private quantum decoupling, corresponding to locally reducing correlations in a given bipartite quantum state without transferring them to the environment. In this framework, the concept of private local randomness naturally arises as a resource, and total correlations are divided into eliminable and ineliminable ones. We prove upper and lower bounds on the quantity of ineliminable correlations present in an arbitrary bipartite state, and show that, in tripartite pure states, ineliminable correlations satisfy a monogamy constraint, making apparent their quantum nature. A relation with entanglement theory is provided by showing that ineliminable correlations constitute an entanglement parameter. In the limit of infinitely many copies of the initial state provided, we compute the regularized ineliminable correlations to be measured by the coherent information, which is thus equipped with a new operational interpretation. In particular, our results imply that two subsystems can be privately decoupled if their joint state is separable.

  2. Bruker AMX Y Channel Heteronuclear Decoupling Using a Linear Amplifier

    Energy Technology Data Exchange (ETDEWEB)

    Alam, Todd M.; Lang, David P.

    1999-08-02

    Under both static and common MAS conditions (< 15 kHz) the question of residual X-Y heteronuclear decoupling can become a complicating factor in the analysis of various NMR results. In our lab the impact of {sup 31}P-{sup 23}Na dipolar coupling on the observed {sup 23}Na M{sub 2} relaxation for a series of sodium phosphate glasses was recently investigated by employing continuous wave {sup 31}P decoupling during the entire pulse sequence. Initially these efforts were complicate by the inability to provide a gating pulse during the data acquisition using the standard Bruker nomenclature, go=2, for the acquisition loop. A pulse sequence to overcome these restrictions is given below. Our AMX400 instrument is configured with a 3 channel MCI, but utilizes a linear AMT amplifier on the 3rd channel (requiring gating pulse via the C4 program call during the entire time it is on). The standard acquisition loop has been replaced by direct adc and aq commands for data acquisition. Unlike the go=2 statement which does not allow a C4 gating command to be included, these individual acquisition commands can all include distinct C4 gating.

  3. Design and Simulation of a New Decoupled Micromachined Gyroscope

    Energy Technology Data Exchange (ETDEWEB)

    Sharaf, Abdelhameed [NCRRT, EAEA, 3 Ahmed Elzomer Street, Nasr City, Cairo (Egypt); STRC, AUC, 113 Kasr El Eini Street, 11215, Cairo (Egypt); Sedky, Sherif [STRC, AUC, 113 Kasr El Eini Street, 11215, Cairo (Egypt); Physics Department, AUC, 113 Kasr El Eini Street, 11215, Cairo (Egypt); Habib, S E-D [Electronics and Communication Department, Faculty of Engineering, Cairo University, 12613, Giza (Egypt)

    2006-04-01

    This paper reports on a new decoupled micromachined gyroscope. The proposed sensor is a dual mass type, electrostatically driven to primary mode oscillation and senses, capacitively, the output signal. Full decoupling between drive and sense modes minimizes the mechanical crosstalk. Three different designs are introduced in this work. Drive and sense amplitudes, mechanical and electrical sensitivities, quality factors and approximate bandwidths are extracted analytically and the results are confirmed using finite element analysis. The first design shows drive and sense modes resonance frequencies of 4077 Hz and 4081 Hz respectively; with a frequency mismatch lower than 0.1%. The drive and sense capacitance are 0.213 pF and 0.142 pF respectively. The mechanical and electrical sensitivities are 0.011 {mu}m/ ({sup 0}/s) and 2.75 mV/ ({sup 0}/s) respectively. The third design shows significantly improved mechanical and electrical sensitivities of 0.027 {mu}m/ ({sup 0}/s) and 6.85 mV/ ({sup 0}/s) respectively.

  4. Browse Title Index

    African Journals Online (AJOL)

    Items 151 - 200 of 232 ... Vol 11, No 2 (2012), SQLdefend: An automated detection and prevention technique for sql injection vulnerabilities in web applications, Abstract. E.E. Ogheneovo, P.O. Asagba. Vol 12, No 2 (2013), Stability analysis of predator-prey interaction with a crowding effect, Abstract. E.N. Ekaka-a, N.M. Nafo.

  5. Browse Title Index

    African Journals Online (AJOL)

    Items 201 - 223 of 223 ... R Ozcan, M Elicevik, E Mammadov, S Kuruoglu, S Dervisoglu, S Celayir. Vol 7, No 1 (2011), Traumatic upper cervical esophageal perforation in childhood with door handle, Abstract PDF. E Mammadov, A Alim, M Elicevik, S Celayir. Vol 8, No 3 (2012), Tubularized incised plate technique for recurrent ...

  6. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 50 of 145 ... Vol 20, No 1 (2012), A pilot survey of impression materials and techniques used by dentists in the fabrication of fixed indirect restorations, Abstract. YO Ajayi, BO Akinboboye. Vol 20, No 1 (2012), A preliminary study of psychological pain among patients attending the dental clinic of a tertiary hospital ...

  7. Browse Title Index

    African Journals Online (AJOL)

    Items 101 - 150 of 229 ... Vol 18, No 2 (2006), Geological mapping using fractal technique, Abstract PDF. K M Lawal, M N Umego, S B Ojo. Vol 17, No 1 (2005), Geophysical investigation of the source of river Ethiope in Ukwuani LGA of Delta State, Nigeria, Abstract. EC Okolie, JEA Osemeikhean, EA Atakpo, JO Oseji.

  8. Browse Title Index

    African Journals Online (AJOL)

    Items 101 - 150 of 581 ... Humphrey D. Mazigo, David W. Dunne, Domenica Morona, Safari M. Kinung'hi, Fred Nuwaha. Vol 15, No 3 (2013), Comparison of sampling techniques for Rift Valley Fever virus potential vectors, Aedes aegypti and Culex pipiens complex, in Ngorongoro District in northern Tanzania, Abstract PDF.

  9. Browse Title Index

    African Journals Online (AJOL)

    Items 51 - 69 of 69 ... Vol 2, No 2 (2009), Teacher-Trainers' Perception of the Causes and Treatment of Sleep-Walking Disorder in Children, Abstract PDF. MO Omozuwa, E.O.S Iyamu. Vol 2, No 1 (2009), The adoption of some counselling techniques in teaching practice supervision, Abstract PDF. O Osagie, F.N Obaseki.

  10. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 50 of 107 ... Vol 1, No 4 (2012), Anti-diarrheal activity of leaf extract of Juniperus procera and its effect on intestinal motility in albino mice, Abstract PDF. G Tafesse, Y .... Vol 5, No 3 (2016), Comparison of various staining techniques in the diagnosis of Coccidian parasitosis in HIV infection, Abstract PDF. A.A. Joseph ...

  11. Browse Title Index

    African Journals Online (AJOL)

    Items 301 - 350 of 379 ... Vol 48, No 3 (2012), Somatosensory-evoked potentials as an add-on diagnostic procedure to imaging studies in patients with lumbosacral spinal canal ... And Semiflex Chambers For Measuring The Smallest Field Size Required For Intensity- Modulated Radiotherapy (IMRT) Technique, Abstract PDF.

  12. Browse Title Index

    African Journals Online (AJOL)

    Vol 19, No 2 (2017), Evaluation des connaissances des enseignants du secondaire de l'atlantique au Benin sur les facteurs de risques du cancer du col de .... Vol 13, No 2 (2011): Series D, Exploration de l'infertilité masculine : Techniques et Anomalies du spermogramme et du spermocytogramme en Pratique privée à ...

  13. Browse Title Index

    African Journals Online (AJOL)

    Items 401 - 450 of 524 ... Vol 6, No 1 (2004), Research Note: Energy dispersive x-ray fluorescence analysis technique for geological, biological and environmental samples. ... Vol 15, No 2 (2013), Sol-gel/hydrothermal synthesis of mixed metal oxide of Titanium and zinc (tio2 /zno) nanocomposites through direct Chemical ...

  14. Browse Title Index

    African Journals Online (AJOL)

    Items 201 - 218 of 218 ... Vol 6, No 2 (2008), Umcomplicated midvaginal vesico-vaginal fistula repair in Ibadan: a comparison of the abdominal and vaginal routes, Abstract PDF. IO Morhason-Bello, OA Ojengbede, BO Adedokun, MA Okunlola, A Oladokun. Vol 1, No 1 (2003), Update in the technique of third molar surgery ...

  15. Browse Title Index

    African Journals Online (AJOL)

    Items 301 - 350 of 823 ... Vol 16, No 2 (2011), How can the International Federation of Surgical Colleges assist COSECSA in achieving their objectives? Abstract PDF. RHS Lane. Vol 18, No 1 (2013), HOW I DO IT: Technique of Hepatectomy for Primary Liver Cell Carcinoma in a Developing Country, Abstract PDF. DO Irabor.

  16. Browse Title Index

    African Journals Online (AJOL)

    Items 51 - 88 of 88 ... Vol 5, No 1 (2007), Outpatient management protocol of skin tattoos with simple chemo/dermabrasion technique. Abstract. J A Mohammad, A A Al-Rasheed, A M Alhamod. Vol 3, No 1 (2005), Pachyonychia Congenita type 1, with Cutaneous Horn: a single case report, Abstract. jAdel HH Bashir. Vol 8, No 2 ...

  17. Browse Title Index

    African Journals Online (AJOL)

    Items 151 - 200 of 333 ... Vol 32, No 1 (2009), Landslide hazard zonation around Gilgel Gibe-II Hydroelectric project, Southwestern Ethiopia, Abstract PDF. Engdawork Mulatu, Tarun Kumar Raghuvanshi, Bekele Abebe. Vol 37, No 2 (2014), Landslide Hazard Zonation Using Expert Evaluation Technique: A Case Study of the ...

  18. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 49 of 49 ... Vol 4 (2003), Melodic, rhythmic and harmonic devices of 20th century compositional techniques in Uzoigwe\\'s piano works, Abstract. Kola Oyadiran. Vol 9-10 No 1, 2008-2009, Music business operation in Nigeria: A definition and how to make it work, Abstract. A Adeleke. Vol 6 (2005), Music curriculum in ...

  19. Browse Title Index

    African Journals Online (AJOL)

    Items 451 - 500 of 591 ... Vol 8, No 2 (2010), Small scale commercial poultry farmers training needs on improved production techniques in Oyo Zones of the Agricultural Development Programme. (ADP), Abstract. RA Oyeyinka, WK Raheem. Vol 13, No 1 (2015), Socio – economic impact of pastoral activities in Olorunsogo ...

  20. Browse Title Index

    African Journals Online (AJOL)

    Items 251 - 300 of 465 ... Vol 9, No 1 (2004), Management of Non- Deflating Foley Suprapubic Catheters - A Novel Technique, Abstract. AO Obi. Vol 3, No 2 (1998), Management of surgical trauma to the extrahepatic bile ducts, Abstract. MAC Aghaji, EO Ocheli. Vol 12, No 2 (2007), Mandibular impacted third molar Surgery and ...

  1. Browse Title Index

    African Journals Online (AJOL)

    Items 51 - 100 of 102 ... Vol 5, No 2 (2008), Influence of Rice Husk Ash on Mechanical Properties and Stress-Strain Behaviour of Standard Grade Self Compacting Concrete .... Vol 2, No 1 (2005), The Use Of GIS And Remote Sensing Techniques To Analyse Water Balance Of Lake Bogoria Under Limited Data Conditions ...

  2. Browse Title Index

    African Journals Online (AJOL)

    Items 151 - 200 of 437 ... Vol 10, No 1 (2013), Factors influencing user ability to retrieve information from the reference libraries in University of Calabar (UNICAL) and Cross River State University ... Vol 14, No 2 (2017), Gender differences and job stress management techniques of library staff of polytechnics in Nigeria, Abstract.

  3. Browse Title Index

    African Journals Online (AJOL)

    élaboration d'un organigramme technique. Abstract. C Semassou, J-P Nadeau, A Vianou. Vol 7, No 1 (2005): Serie A, Proprietes antifongiques de quatre especies d\\'Eucalyptus de Togo, Abstract. E Kosh-kombe, K Batawila, K A Gbogbo, G M Tossou, ...

  4. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 50 of 148 ... Vol 11, No 2 (2017), A comparison of rapid diagnostic testing (by plasmodium lactate dehydrogenase), and quantitative buffy coat technique in malaria diagnosis ... Vol 12, No 1S (2018), Antibacterial activity of Dracontomelon dao extracts on Methicillin-Resistant S. aureus (MRSA) and E. coli Multiple Drug ...

  5. Browse Title Index

    African Journals Online (AJOL)

    Items 451 - 500 of 941 ... Vol 13, No 2 (1999), Determination and delineation of the amount of platinum in various segments of an automotive catalyst using carbon paste electrode technique with electrode binder. Details PDF. F A Adekola, C Colin, D Bauer. Vol 2, No 1 (1988), Determination of γ-BHC in breast milk of Kenyan ...

  6. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 50 of 76 ... Vol 15, No 2 (2005), Breast self examiniation among non-health professionals in Nigeria, Abstract. Mbanaso Augustus, Adisa Adeyinka, Okoye Chinyelu, Mbanaso Chidinma. Vol 17, No 1 (2007), Cancellous bone autografts: Donor sites, indications, techniques and complications, Abstract. AO Ogbemudia.

  7. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 50 of 232 ... Vol 13, No 1 (2014), Antiproliferative and apoptotic activities of Cola lepidota against estrogen receptor positive breast cancer cells, Abstract. V Imieje, O Erharuyi, N Engel, A Falodun. Vol 11, No 2 (2012), Application of goal programming technique in government statutory budget in Anambra State ...

  8. Browse Title Index

    African Journals Online (AJOL)

    Items 201 - 250 of 769 ... Vol 18, No 2 (2010), Effects of Felt Obligation on Occupational Burnout among Employees of Post-Consolidation Banks in Akure, Nigeria. ... Vol 18, No 1 (2010), Efficacy of group counselling interventions (positive reinforcement and self control techniques) in remedying truancy among school-going ...

  9. Title V Permitting Statistics Inventory

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Title V Permitting Statistics Inventory contains measured and estimated nationwide statistical data, consisting of counts of permitted sources, types of permits...

  10. Region 7 Title V facilities

    Data.gov (United States)

    U.S. Environmental Protection Agency — This web map shows the Region 7 Title V facilities (Clean Air Act major sources), any Class I areas within 300 km of R7 States, and any Tribal areas within 50 miles...

  11. Document understanding using layout styles of title page images

    Science.gov (United States)

    Sharpe, Louis H., II; Manns, Basil

    1992-08-01

    An important problem in the application of compound document architectures is the input of data from raster images. One technique is to use visual, syntactic cues found in the layout of the raster document to infer its logical structure or semantics. Another is to use context derived from characters recognized within a given block of raster data. Both character- and image- based information are considered here. A well-constrained environment is defined for use in developing rules that can be applied to basic book title page understanding. This paper identifies the attributes of title page layout objects which aid in mapping them into the fields of a simple bibliographic format. Using as input the raster images of the title page and the verso of the title page along with the ASCII output of a generic character recognition engine from these same images, a system of rules is defined for generating a marked-up text wherein key bibliographic fields may be identified.

  12. Browse Title Index

    African Journals Online (AJOL)

    Items 951 - 1000 of 1136 ... N.A. Rahman, N.K. Ismail, Z.M. Nor, M.N. Alias, M.S. Kamis, N Alias. Vol 9, No 6S (2017), Teaching and learning of pre-calculus: an insights of educators, Abstract PDF. A. M. Nasir, N. A. B. Omar, E. S. B. Sarudin, S. Masrom, N. H. Ahmad. Vol 8, No 2 (2016): Special Issue: Part 2, Techniques used to ...

  13. Browse Title Index

    African Journals Online (AJOL)

    D Djonwangwe, FNT Fohouo, J Messi, D Bruckner. Vol 4, No 5 (2010), Impact de l'épandage de déchets urbains sur les communautés bactériennes de sols agricoles dans la périphérie de Ouagadougou, Burkina Faso, Abstract PDF. E Hien, S Favre-Bonte, D Masse, S Nazaret. Vol 5, No 3 (2011), Impact de trois techniques ...

  14. Browse Title Index

    African Journals Online (AJOL)

    Vol 11, No 1 (2001), Un Modèle de conception d'applications Web basées sur XML, Abstract. M Lo, H Amrane, P Raffinat. Vol 9, No 2 (1999), Un outil de connaissance à partir des données : Data Miner 1.0, Abstract. S Louni. Vol 10, No 1 (2000), Un système d'authentification avancé base sur la technique OTP, Abstract.

  15. Unexpected decoupling of stretching and bending modes in protein gels.

    Science.gov (United States)

    Gibaud, Thomas; Zaccone, Alessio; Del Gado, Emanuela; Trappe, Véronique; Schurtenberger, Peter

    2013-02-01

    We show that gels formed by arrested spinodal decomposition of protein solutions exhibit elastic properties in two distinct frequency domains, both elastic moduli exhibiting a remarkably strong dependence on volume fraction. Considering the large difference between the protein size and the characteristic length of the network we model the gels as porous media and show that the high and low frequency elastic moduli can be respectively attributed to stretching and bending modes. The unexpected decoupling of the two modes in the frequency domain is attributed to the length scale involved: while stretching mainly relates to the relative displacement of two particles, bending involves the deformation of a strand with a thickness of the order of a thousand particle diameters.

  16. Performance of thin-film ferroelectric capacitors for EMC decoupling.

    Science.gov (United States)

    Li, Huadong; Subramanyam, Guru

    2008-12-01

    This paper studied the effects of thin-film ferroelectrics as decoupling capacitors for electromagnetic compatibility applications. The impedance and insertion loss of PZT capacitors were measured and compared with the results from commercial off-the-shelf capacitors. An equivalent circuit model was extracted from the experimental results, and a considerable series resistance was found to exist in ferroelectric capacitors. This resistance gives rise to the observed performance difference around series resonance between ferroelectric PZT capacitors and normal capacitors. Measurements on paraelectric (Ba,Sr)TiO(3)-based integrated varactors do not show this significant resistance. Some analyses were made to investigate the mechanisms, and it was found that it can be due to the hysteresis in the ferroelectric thin films.

  17. Magnetic decoupling of ferromagnetic metals through a graphene spacer

    Energy Technology Data Exchange (ETDEWEB)

    Grimaldi, I.; Papagno, M. [Dipartimento di Fisica, Universitá della Calabria, Arcavacata di Rende (CS), 87036 (Italy); Ferrari, L. [Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Roma I-00133 (Italy); Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Trieste (Italy); Sheverdyaeva, P.M.; Mahatha, S.K. [Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Trieste (Italy); Pacilé, D., E-mail: daniela.pacile@fis.unical.it [Dipartimento di Fisica, Universitá della Calabria, Arcavacata di Rende (CS), 87036 (Italy); Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Trieste (Italy); Carbone, C. [Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Trieste (Italy)

    2017-03-15

    We study the magnetic coupling between different ferromagnetic metals (FMs) across a graphene (G) layer, and the role of graphene as a thin covalent spacer. Starting with G grown on a FM substrate (Ni or Co), we deposited on top at room temperature several FM metals (Fe, Ni, Co). By measuring the dichroic effect of 3p photoemission lines we detect the magnetization of the substrate and the sign of the exchange coupling in FM overlayer at room temperature. We show that the G layer magnetically decouples the FM metals. - Highlights: • The magnetic coupling between ferromagnets mediated by graphene is studied. • To this end, the linear dichroic effect in 3p photoemission lines is employed. • For selected junctions no magnetic coupling is attained through graphene. • Graphene inhibits the magnetic alignment that normally occurs between ferromagnets.

  18. Decoupling, re-Engaging: managing trust relationships in implementation projects

    DEFF Research Database (Denmark)

    Rose, Jeremy; Schlichter, Bjarne Rerup

    2012-01-01

    An important aspect of the successful implementation of large information systems (such as ERP systems) is trust. These implementations impact the legitimate interests of many groups of stakeholders, and trust is a critical factor for success. Trust in the project is contingent upon many factors......, and the complex demands of managing those fluctuations. We investigate evolving trust relationships in a longitudinal case analysis of a large Integrated Hospital System implementation for the Faroe Islands. Trust relationships suffered various breakdowns, but the project was able to recover and eventually meet...... its goals. Based on concepts from Giddens’ later work on modernity, we develop two approaches for managing dynamic trust relationships in implementation projects: decoupling and re-engaging....

  19. The effective gravitational decoupling between dark matter and the CMB

    CERN Document Server

    Voruz, Luc; Tram, Thomas

    2014-01-01

    We present a detailed and self-contained analytical derivation of the evolution of sub-horizon cosmological perturbations before decoupling, based on previous work by S. Weinberg. These solutions are valid in the minimal LCDM scenario, to first order in perturbation theory, in the tight-coupling limit and neglecting neutrino shear stress. We compare them to exact numerical solutions computed by a Boltzmann code, and we find the two to be in very good agreement. The analytic solutions show explicitly that CDM and the baryon-photon fluid effectively behave as separate self-gravitating fluids until the epoch of baryon drag. This in turn leads to the surprising conclusion that the CMB is much less sensitive to the clustering properties of minimally coupled Dark Matter models than what would be naively expected.

  20. Improved Decoupling for 13C coil Arrays Using Non-Conventional Matching and Preamplifier Impedance

    DEFF Research Database (Denmark)

    Sanchez, Juan Diego; Johansen, Daniel Højrup; Hansen, Rie Beck

    In this study, we describe a method to obtain improved preamplifier decoupling for receive-only coils. The method relies on the better decoupling obtained when coils are matched to an impedance higher than 50 . Preamplifiers with inductive imaginary impedance and low real impedance, increase...

  1. Decoupling the link between economic growth, transport growth and transport energy consumption in Europe

    Energy Technology Data Exchange (ETDEWEB)

    Stead, Dominic [Delft Univ. of Technology (Netherlands). OTB Research Inst.; Banister, David [Univ. College London (United Kingdom). Bartlett School of Planning

    2003-07-01

    In the past, it has always been assumed that there is a close relationship between the growth in freight and passenger transport, transport energy consumption and economic growth, at least as measured by Gross Domestic Product (GDP). This raises questions about the underlying rationale for this statistical relationship (if it exists) and, more importantly for sustainable development, whether the relationship will (or should) continue into the future. The strong premise in this paper is that decoupling economic growth from transport growth is a necessary condition for sustainable development - we need to encourage economic growth (in the widest sense), but with less transport (at least in terms of resource use and environmental impacts). This requirement has now been recognised in a series of policy documents. In the UK, for example, the Standing Advisory Committee on Trunk Road Assessment have examined the issue of transport intensity, the prospects for future improvements and the potential for decoupling transport volumes and economic activity. At the European level, the 2001 White Paper on Transport states that breaking the link between economic growth and transport growth is central in its proposals, and the EU's sustainable development strategy identifies decoupling transport growth from the growth in Gross Domestic Product as one of its main objectives. We begin by examining transport and economic trends in Europe and looking at EU policy statements on decoupling. We then discuss the nature of travel and how decoupling can usefully be measured through volumes, distance and efficiency. Possible approaches and strategies for decoupling are then presented, together with a discussion of how these measures might help to decouple transport growth and economic growth. We conclude that, whilst there are a number of strategies which are likely to help to decouple transport growth and economic growth, there are also a number of factors which are hindering the

  2. The Decoupling of Resource Consumption and Environmental Impact from Economic Growth in China: Spatial Pattern and Temporal Trend

    Directory of Open Access Journals (Sweden)

    Zilong Zhang

    2016-02-01

    Full Text Available Unprecedented economic achievement in China has occurred along with rising resource consumption and waste productions levels. The goal of sustainability requires the decoupling of economic growth from resource consumption (resource decoupling and environmental degradation (impact decoupling. For this paper, the performances of resource decoupling (energy and water and impact decoupling (wastewater, SO2 and CO2 in China were evaluated, and the spatial pattern and temporal trend of decoupling performance were investigated by using the rescaled range analysis (R/S. The results indicate the following. (1 The performance of resource decoupling during the investigated period is worse than that of traditional impact (SO2 and wastewater decoupling, but better than that of the CO2 emission. Additionally, the decoupling performances of energy consumption and related pollutant emission (except CO2 are better than that of water usage and wastewater discharge; (2 The decoupling performance of energy consumption, SO2 and CO2, has substantially improved from the 10th Five-Year Planning Period (FYP (2001–2005 to the 11th FYP (2006–2010, which indicates that the decoupling performance is highly related the environmental policy; (3 The spatial disparities of the performance of resource and impact decoupling are declining, which indicates the existence of cross-province convergence in decoupling performance; (4 The decoupling performance of SO2 and water usage in most of regions shows an improving trend. Inversely, the decoupling performance of energy consumption, CO2 emission, and wastewater discharge in most regions show a decreasing trend; (5 China needs more stringent water-saving targets and wastewater discharge standards; better policy efforts to improve the water recycling level both in agricultural, industrial and municipal level are required to prevent the decreasing trend of the decoupling performance.

  3. A Decoupling Control Algorithm for Unwinding Tension System Based on Active Disturbance Rejection Control

    Directory of Open Access Journals (Sweden)

    Shanhui Liu

    2013-01-01

    Full Text Available This paper presents a new control methodology based on active disturbance rejection control (ADRC for designing the tension decoupling controller of the unwinding system in a gravure printing machine. The dynamic coupling can be actively estimated and compensated in real time, which makes feedback control an ideal approach to designing the decoupling controller of the unwinding system. This feature is unique to ADRC. In this study, a nonlinear mathematical model is established according to the working principle of the unwinding system. A decoupling model is also constructed to determine the order and decoupling plant of the unwinding system. Based on the order and decoupling plant, an ADRC decoupling control methodology is designed to enhance the tension stability in the unwinding system. The effectiveness and capability of the proposed methodology are verified through simulation and experiments. The results show that the proposed strategy not only realises a decoupling control for the unwinding system but also has an effective antidisturbance capability and is robust.

  4. Evidence of Absolute Decoupling from Real World Policy Mixes in Europe

    Directory of Open Access Journals (Sweden)

    Doreen Fedrigo-Fazio

    2016-05-01

    Full Text Available In resource economics, decoupling from environmental impacts is assumed to be beneficial. However, the success of efforts to increase resource productivity should be placed within the context of the earth’s resources and ecosystems as theoretically finite and contingent on a number of threshold values. Thus far relatively few analyses exist of policies which have successfully implemented strategies for decoupling within these limits. Through ex-post evaluation of a number of real world policy mixes from European Union member states, this paper further develops definitions of the concept of decoupling. Beyond absolute (and relative decoupling, “absolute decoupling within limits” is proposed as an appropriate term for defining resource-productivity at any scale which respects the existing real world limits on resources and ecosystems and as such, contributes to meeting sustainability objectives. Policy mixes presented here cover a range of resources such as fish stocks, fertilizers, aggregates and fossil based materials (plastics. Policy mixes demonstrating absolute decoupling and at least one where absolute decoupling within limits has occurred, provide insights on developing resource efficiency policies in Europe and beyond.

  5. A critical overview of industrial energy decoupling programs in six developing countries in Asia

    International Nuclear Information System (INIS)

    Luken, Ralph A.; Piras, Stefano

    2011-01-01

    In reviewing the journal literature on the decoupling of energy use and industrial output in the Asian region, particularly with respect to developing countries, we found little information about most country programs other than for China and India and only one article that compared the programs of these two countries. For this reason, we used diverse sources to identify the key programmatic features that have contributed, but clearly are not totally responsible for, decoupling achievements of two countries ( China and Thailand) and then, on the basis of these findings, reviewed emerging industrial energy decoupling programs in four other countries (India, Indonesia, Malaysia and Vietnam). We found that the design of the two successful on-going decoupling programs have common features, which are setting an explicit target for decoupling of energy use and industrial output, a government program that offers financial incentives and imposes specific auditing and reporting requirements and involvement of the manufacturing sector in designing and implementing targets as they apply to individual enterprises. We also found that the emerging programs in the other four countries lack some or all of these essential programmatic features. - Highlights: → We reviewed two on-going and four emerging industrial energy decoupling programs. → These six Asian developing countries have very different rates of decoupling. → The two successful on-going programs share three common features. → These are quantitative targets, supportive programs and industry involvement. → The four emerging programs lack some or all of these features.

  6. INIS: Authority List for Journal Titles

    International Nuclear Information System (INIS)

    1992-01-01

    This is the nineteenth revision of the INIS: Authority List for Journal Titles (IAEA-INIS-11). It lists 10,797 journal titles which have contained articles within the scope of INIS. The purpose of this Authority List is to provide descriptive cataloguers with a standard abbreviation for journal titles and to assist users of INIS products with a tool for verifying the full title of a journal. A journal, or periodical, is generally published within a defined, fixed interval between issues, which usually has more than one issue a year, and which usually includes a mixture of articles, letters, summaries, etc. Within this definition, annuals such as Annual Review of Nuclear Science are included. Series titles as, for example the McGraw-Hill Series in Nuclear Engineering, are not included in this Authority. Entries: Each entry consists of: - the full journal title (highlighted); - the abbreviated title; - ISSN, if available; - CODEN, if available; - additional information related to the journal title. Arrangement: In Part I, the full journal titles are grouped by country or international organization name and ordered alphabetically, followed by the ISSN, the CODEN in square brackets if available, and then the abbreviated title. The abbreviated title is based on the rules of ISO 4: Documentation - International Code for the Abbreviation of Titles of Periodicals. The abbreviations of the words are taken from the ISDS List of Periodical Title Word Abbreviation. In Part II, the order of the citations is reversed: the abbreviated journal titles are arranged alphabetically, followed by country code. Then the full journal titles are followed by the country of publication, and if available, ISSN and CODEN. Additional Information: There is important information related to the journal titles which are fundamental for tracing the history of the title and the present status. They are listed below and are entered whenever applicable: - Ceased publication; - Superseded by

  7. Gravitational decoupling and the Picard-Lefschetz approach

    Science.gov (United States)

    Brown, Jon; Cole, Alex; Shiu, Gary; Cottrell, William

    2018-01-01

    In this work, we consider tunneling between nonmetastable states in gravitational theories. Such processes arise in various contexts, e.g., in inflationary scenarios where the inflaton potential involves multiple fields or multiple branches. They are also relevant for bubble wall nucleation in some cosmological settings. However, we show that the transition amplitudes computed using the Euclidean method generally do not approach the corresponding field theory limit as Mp→∞ . This implies that in the Euclidean framework, there is no systematic expansion in powers of GN for such processes. Such considerations also carry over directly to no-boundary scenarios involving Hawking-Turok instantons. In this note, we illustrate this failure of decoupling in the Euclidean approach with a simple model of axion monodromy and then argue that the situation can be remedied with a Lorentzian prescription such as the Picard-Lefschetz theory. As a proof of concept, we illustrate with a simple model how tunneling transition amplitudes can be calculated using the Picard-Lefschetz approach.

  8. Decoupling Transport from Economic Growth. Towards Transport Sustainability in Europe

    International Nuclear Information System (INIS)

    Tight, M.R.; Site, P. Delle; Meyer-Ruehle, O.

    2004-01-01

    This paper reports on a research project that aimed to identify and assess measures which could be used to reduce travel demand while maintaining economic growth and enhancing environmental quality. The research methodology involved a detailed review of past research; contact with over 600 experts from around Europe and elsewhere for ideas on potential measures; detailed questionnaires from over 100 of these experts; and a series of three panel sessions held in different parts of Europe, each of which involved around 16 experts debating the merits of different measures and identifying case study evidence of their effectiveness. The end result was a short list of 13 measures, indicative of broad types, which are considered to be effective, and an indication of their effectiveness if applied across the European Union. Seven illustrative measures are discussed which stand out from the results as having proven potential (though not necessarily at a European scale) to influence transport intensity and/or unit environmental load whilst not having large detrimental effects on GDP. These are the areas where it is felt that European transport policy could most usefully be focussed in terms of decoupling of transport demand and economic growth

  9. Decoupled Hierarchical Structures for Suppression of Leidenfrost Phenomenon.

    Science.gov (United States)

    Farokhnia, Nazanin; Sajadi, Seyed Mohammad; Irajizad, Peyman; Ghasemi, Hadi

    2017-03-14

    Thermal management of high temperature systems through cooling droplets is limited by the existence of the Leidenfrost point (LFP), at which the formation of a continuous vapor film between a hot solid and a cooling droplet diminishes the heat transfer rate. This limit results in a bottleneck for the advancement of the wide spectrum of systems including high-temperature power generation, electronics/photonics, reactors, and spacecraft. Despite a long time effort on development of surfaces for suppression of this phenomenon, this limit has only shifted to higher temperatures, but still exists. Here, we report a new multiscale decoupled hierarchical structure that suppress the Leidenfrost state and provide efficient heat dissipation at high temperatures. The architecture of these structures is composed of a nanomembrane assembled on top of a deep micropillar structure. This architecture allows to independently tune the involved forces and to suppress LFP. Once a cooling droplet contacts these surfaces, by rerouting the path of vapor flow, the cooling droplet remains attached to the hot solid substrates even at high temperatures (up to 570 °C) for heat dissipation with no existence of Leidenfrost phenomenon. These new surfaces offer unprecedented heat dissipation capacity at high temperatures (2 orders of magnitude higher than the other state-of-the-art surfaces). We envision that these surfaces open a new avenue in thermal management of high-temperature systems through spray cooling.

  10. Enhanced coupling and decoupling of underground nuclear explosions

    Energy Technology Data Exchange (ETDEWEB)

    Terhune, R.W.; Snell, C.M.; Rodean, H.C.

    1979-09-04

    The seismic coupling efficiency of nuclear explosions was studied in granite by means of computer calculations as a function of scaled explosion source radius. The scaled source radii were varied from 0.1 m/kt/sup 1/3/ (point source) to 20 m/kt/sup 1/3/ (representing a nearly full decoupling cavity). It was found that seismic coupling efficiency is at a maximum when the scaled source radius is approximately 2 m/kt/sup 1/3/. The primary cause of this maximum in seismic wave source strength is the effect of initial source radius on peak particle velocity and pulse duration of the outgoing elastic wave. A secondary cause is that rock vaporization (an energy sink) does not occur for scaled source radii somewhat greater than 1 m/kt/sup 1/3/. Therefore, for scaled source radii greater than 1 m/kt/sup 1/3/, there is additional energy available for seismic wave generations. Available data for some nuclear explosions at the Nevada Test Site do not provide sufficient evidence to either support or negate the enhanced coupling that is indicated by calculations at scaled source radii of 1-2 m/kt/sup 1/3/.

  11. Decoupled overlapping grids for the numerical modeling of oil wells

    Science.gov (United States)

    Ogbonna, Nneoma; Duncan, Dugald B.

    2012-01-01

    Accurate computation of time-dependent well bore pressure is important in well test analysis - a branch of petroleum engineering where reservoir properties are estimated by comparing measured pressure responses at an oil well to results from a mathematical model. Similar methods are also used in groundwater engineering. In this paper we present the new approach of decoupled overlapping grids for accurately computing time-dependent pressure at the oil well. Our method is implemented in two stages: a global stage with a simple point or line source well approximation, and a local post-process stage with the well modeled correctly as an internal boundary. We investigate the accuracy of our method for a representative 2D problem in both homogeneous and heterogeneous isotropic domains, and compare our results with the widely used Peaceman well index solution (in the homogeneous case), and the approximate solution on locally refined grids. We also present a theoretical analysis that explains the observed O(h2) behavior of the error in our method for the homogeneous case.

  12. Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior

    Science.gov (United States)

    Chopdekar, Rajesh V.; Malik, Vivek K.; Kane, Alexander M.; Mehta, Apurva; Arenholz, Elke; Takamura, Yayoi

    2018-01-01

    The extent of interfacial charge transfer and the resulting impact on magnetic interactions were investigated as a function of sublayer thickness in La0.7Sr0.3MnO3/La0.7Sr0.3CoO3 ferromagnetic superlattices. Element-specific soft x-ray magnetic spectroscopy reveals that the electronic structure is altered within 5–6 unit cells of the chemical interface, and can lead to a synthetic ferromagnet with strong magnetic coupling between the sublayers. The saturation magnetization and coercivity depends sensitively on the sublayer thickness due to the length scale of this interfacial effect. For larger sublayer thicknesses, the La0.7Sr0.3MnO3 and La0.7Sr0.3CoO3 sublayers are magnetically decoupled, displaying two independent magnetic transitions with little sublayer thickness dependence. These results demonstrate how interfacial phenomena at perovskite oxide interfaces can be used to tailor their functional properties at the atomic scale.

  13. Impersonating the Standard Model Higgs boson: alignment without decoupling

    International Nuclear Information System (INIS)

    Carena, Marcela; Low, Ian; Shah, Nausheen R.; Wagner, Carlos E.M.

    2014-01-01

    In models with an extended Higgs sector there exists an alignment limit, in which the lightest CP-even Higgs boson mimics the Standard Model Higgs. The alignment limit is commonly associated with the decoupling limit, where all non-standard scalars are significantly heavier than the Z boson. However, alignment can occur irrespective of the mass scale of the rest of the Higgs sector. In this work we discuss the general conditions that lead to “alignment without decoupling”, therefore allowing for the existence of additional non-standard Higgs bosons at the weak scale. The values of tan β for which this happens are derived in terms of the effective Higgs quartic couplings in general two-Higgs-doublet models as well as in supersymmetric theories, including the MSSM and the NMSSM. Moreover, we study the information encoded in the variations of the SM Higgs-fermion couplings to explore regions in the m A −tan β parameter space

  14. Decoupling allogenic and autogenic processes in experimental stratigraphy

    Science.gov (United States)

    Kim, W.

    2009-12-01

    At the heart of interpreting the history of Earth surface evolution preserved in the sedimentary record is decoupling environmental (allogenic) forcing from internally generated (autogenic) “noise.” One of the major stumbling blocks for distinguishing allogenic and autogenic origins in the stratigraphic record lies in the lack of quantitative understanding on autogenic processes. So far no existing computational models can explicitly model geomorphic self-organization. However, flume studies with sediment and water, which clearly show self-organized, internally driven sediment transport processes, do give the opportunity to model and investigate autogenic processes under controlled boundary conditions. I present data from two recent experiments performed in the Experimental EarthScape (XES) subsiding basin at St. Anthony Falls Laboratory, University of Minnesota. Evolution of experimental deltas in XES performed in 2002 and 2005 showed 1) clear cyclic alternations of autogenic fluvial sediment storage and release associated with changes in the fluvial planform pattern and 2) changes in time and event size of the autogenic processes by interaction with external controls e.g., tectonics. Comparing the experimental data conducted under either no or active relative base-level rise, I further explore the effects of coupling autogenic processes with environmental forcing.

  15. Neurovascular coupling and decoupling in the cortex during voluntary locomotion.

    Science.gov (United States)

    Huo, Bing-Xing; Smith, Jared B; Drew, Patrick J

    2014-08-13

    Hemodynamic signals are widely used to infer neural activity in the brain. We tested the hypothesis that hemodynamic signals faithfully report neural activity during voluntary behaviors by measuring cerebral blood volume (CBV) and neural activity in the somatosensory cortex and frontal cortex of head-fixed mice during locomotion. Locomotion induced a large and robust increase in firing rate and gamma-band (40-100 Hz) power in the local field potential in the limb representations in somatosensory cortex, and was accompanied by increases in CBV, demonstrating that hemodynamic signals are coupled with neural activity in this region. However, in the frontal cortex, CBV did not change during locomotion, but firing rate and gamma-band power both increased, indicating a decoupling of neural activity from the hemodynamic signal. These results show that hemodynamic signals are not faithful indicators of the mean neural activity in the frontal cortex during locomotion; thus, the results from fMRI and other hemodynamic imaging methodologies for studying neural processes must be interpreted with caution. Copyright © 2014 the authors 0270-6474/14/3410975-07$15.00/0.

  16. Progressive hypoxia decouples activity and aerobic performance of skate embryos

    Science.gov (United States)

    Di Santo, Valentina; Tran, Anna H.; Svendsen, Jon C.

    2016-01-01

    Although fish population size is strongly affected by survival during embryonic stages, our understanding of physiological responses to environmental stressors is based primarily on studies of post-hatch fishes. Embryonic responses to acute exposure to changes in abiotic conditions, including increase in hypoxia, could be particularly important in species exhibiting long developmental time, as embryos are unable to select a different environment behaviourally. Given that oxygen is key to metabolic processes in fishes and aquatic hypoxia is becoming more severe and frequent worldwide, organisms are expected to reduce their aerobic performance. Here, we examined the metabolic and behavioural responses of embryos of a benthic elasmobranch fish, the little skate (Leucoraja erinacea), to acute progressive hypoxia, by measuring oxygen consumption and movement (tail-beat) rates inside the egg case. Oxygen consumption rates were not significantly affected by ambient oxygen levels until reaching 45% air saturation (critical oxygen saturation, Scrit). Below Scrit, oxygen consumption rates declined rapidly, revealing an oxygen conformity response. Surprisingly, we observed a decoupling of aerobic performance and activity, as tail-beat rates increased, rather than matching the declining metabolic rates, at air saturation levels of 55% and below. These results suggest a significantly divergent response at the physiological and behavioural levels. While skate embryos depressed their metabolic rates in response to progressive hypoxia, they increased water circulation inside the egg case, presumably to restore normoxic conditions, until activity ceased abruptly around 9.8% air saturation. PMID:27293746

  17. Surface-atmosphere decoupling limits accumulation at Summit, Greenland.

    Science.gov (United States)

    Berkelhammer, Max; Noone, David C; Steen-Larsen, Hans Christian; Bailey, Adriana; Cox, Christopher J; O'Neill, Michael S; Schneider, David; Steffen, Konrad; White, James W C

    2016-04-01

    Despite rapid melting in the coastal regions of the Greenland Ice Sheet, a significant area (~40%) of the ice sheet rarely experiences surface melting. In these regions, the controls on annual accumulation are poorly constrained owing to surface conditions (for example, surface clouds, blowing snow, and surface inversions), which render moisture flux estimates from myriad approaches (that is, eddy covariance, remote sensing, and direct observations) highly uncertain. Accumulation is partially determined by the temperature dependence of saturation vapor pressure, which influences the maximum humidity of air parcels reaching the ice sheet interior. However, independent proxies for surface temperature and accumulation from ice cores show that the response of accumulation to temperature is variable and not generally consistent with a purely thermodynamic control. Using three years of stable water vapor isotope profiles from a high altitude site on the Greenland Ice Sheet, we show that as the boundary layer becomes increasingly stable, a decoupling between the ice sheet and atmosphere occurs. The limited interaction between the ice sheet surface and free tropospheric air reduces the capacity for surface condensation to achieve the rate set by the humidity of the air parcels reaching interior Greenland. The isolation of the surface also acts to recycle sublimated moisture by recondensing it onto fog particles, which returns the moisture back to the surface through gravitational settling. The observations highlight a unique mechanism by which ice sheet mass is conserved, which has implications for understanding both past and future changes in accumulation rate and the isotopic signal in ice cores from Greenland.

  18. Navigating towards Decoupled Aquaponic Systems: A System Dynamics Design Approach

    Directory of Open Access Journals (Sweden)

    Simon Goddek

    2016-07-01

    Full Text Available The classical working principle of aquaponics is to provide nutrient-rich aquacultural water to a hydroponic plant culture unit, which in turn depurates the water that is returned to the aquaculture tanks. A known drawback is that a compromise away from optimal growing conditions for plants and fish must be achieved to produce both crops and fish in the same environmental conditions. The objective of this study was to develop a theoretical concept of a decoupled aquaponic system (DAPS, and predict water, nutrient (N and P, fish, sludge, and plant levels. This has been approached by developing a dynamic aquaponic system model, using inputs from data found in literature covering the fields of aquaculture, hydroponics, and sludge treatment. The outputs from the model showed the dependency of aquacultural water quality on the hydroponic evapotranspiration rate. This result can be explained by the fact that DAPS is based on one-way flows. These one-way flows results in accumulations of remineralized nutrients in the hydroponic component ensuring optimal conditions for the plants. The study also suggests to size the cultivation area based on P availability in the hydroponic component as P is an exhaustible resource and has been identified one of the main limiting factors for plant growth.

  19. Software Development Framework For Electronic Land Titles ...

    African Journals Online (AJOL)

    Software Development Framework For Electronic Land Titles Records Administration System. ... Record keeping is a fundamental activity of public administration. ... keeping system to a more reliable and decentralized information system, meant to improve reporting to stakeholders in Land Titles records administration.

  20. Transform extension for block-based hybrid video codec with decoupling transform sizes from prediction sizes and coding sizes

    Science.gov (United States)

    Chen, Jing; Li, Ge; Fan, Kui; Guo, Xiaoqiang

    2017-09-01

    In the block-based hybrid video coding framework, transform is applied to the residual signal resulting from intra/inter prediction. Thus in the most of video codecs, transform block (TB) size is equal to the prediction block (PB) size. To further improve coding efficiency, recent video coding techniques have supported decoupling transform and prediction sizes. By splitting one prediction block into small transform blocks, the Residual Quad-tree (RQT) structure attempts to search the best transform size. However, in the current RQT, the transform size cannot be larger than the size of prediction block. In this paper, we introduce a transform extension method by decoupling transform sizes from prediction sizes and coding sizes. In addition to getting the transform block within the current PB partition, we combine multiple adjacent PBs to form a larger TB and select best block size accordingly. According to our experiment on top of the newest reference software (ITM17.0) of MPEG Internet Video Coding (IVC) standard, consistent coding performance gains are obtained.

  1. TITLE

    Directory of Open Access Journals (Sweden)

    Nisha K. M

    2016-01-01

    Full Text Available The new millennium is seen as an epoch of entrepreneurship with entrepreneurs perceiving novel opportunities, organizing resources, undertaking risks to pursue their goals in establishing innovative ventures for scaling new horizons. Women entrepreneurs have the potency to confront numerous challenges, such as creating equity, equilibrium, ensuring sustainable and inclusive socio economic development in divergent economies, by seizing tremendous business opportunities in the contemporary commercial world. Kerala, the southern State of India, is experiencing an economic renovation through technological transformation and, in particular, through the growth of women oriented Micro, Small and Medium Enterprises (MSMEs. The study aims to; identify the growth trends of women’s entrepreneurship in the micro enterprises of Kerala; examine whether women’s entrepreneurial activities significantly vary across the form of women owned enterprises, type of organization and nature of activity; and also explore the prospects and challenges faced by women entrepreneurs through micro entrepreneurial activities. Research methodology involves the application of descriptive quantitative analysis on the secondary data primarily collected from the database of Directorate of Industries and District Industries Centre for a period of 7 years extending from 2007-08 to 2013-14. Findings reveal that MSMEs spawn better income distribution, by operating in heterogeneous areas of the economy with limited capital and creating more employment opportunities, thereby reducing poverty and inequalities. The trend analysis reflects an escalation in the number of enterprises, investments, profits and employment opportunities generated especially through micro enterprises of women. They play a crucial role in the economy in terms of creating self employment and generating employment opportunities for others. A paradigm shift is seen in the role of women’s entrepreneurship in terms of innovation, attitudes, leadership qualities, competitiveness, entrepreneurial skill and absorbing new entrants to the job market, empowering marginalized women.

  2. Title :

    African Journals Online (AJOL)

    m

    Enuresis is the involuntary passage of urine during sleep occurring after the age which bladder control would normally ... Treatment for enuresis and type received (orthodox or native ). Parents assessment of child's performance at .... Child's Academic performance. The child's achievement in school was assessed from the ...

  3. TITLE

    Directory of Open Access Journals (Sweden)

    Abdolhamid Papzan

    2013-01-01

    Full Text Available This study investigated entrepreneurial intention among graduate students of USM Engineering Campus. Applying the Theory of Planned Behavior (TPB; Ajzen, we examined the empirical model of entrepreneurial intention determinants. Although research has been conducted in entrepreneurial intention, limited study has been done among Iranian graduate students who are studying abroad. This research aims to fill this gap using Entrepreneurial Intention Questionnaire (EIQ, version 3.1. Accordingly, a survey study was applied and Iranian graduate students of the USM Engineering Campus were studied using the census method. The authors propose an empirical model and tested its reliability and validity using structural equation modeling. Data was analyzed using Spss16 and Amos18 software. Results revealed that the level of knowledge about business sources of assistance for entrepreneurs in addition to components of the TPB, affected entrepreneurial intention. Empirical model ‘s goodness of fit indices indicated good model fit x2=1.047, df=2, probability 0.592; NFI= 0.981; CFI= 1.000; RMSEA=0.000. It seems that current empirical model could be a guide for future research on this important topic.

  4. Nonlinear vibration analysis of axially moving strings based on gyroscopic modes decoupling

    Science.gov (United States)

    Yang, Xiao-Dong; Wu, Hang; Qian, Ying-Jing; Zhang, Wei; Lim, C. W.

    2017-04-01

    A novel idea that applies the multiple scale analysis to a discretized decoupled system of gyroscopic continua is introduced and an axial moving string is treated as an example. First, the invariant manifold method is applied to the discretized ordinary differential equations of the axially moving string. Complex gyroscopic mode functions that agree well with true analytical results are obtained. The gyroscopic modes are subsequently used for the discretized ordinary differential equations with gyroscopic and nonlinear coupling terms that yield a gyroscopically decoupled system. Further the method of multiple scales is used to obtain the equations at a slow scale. This novel procedure is compared to solutions obtained by directly applying the classical multiple scale analysis to the gyroscopically coupled system without decoupling. The modal decoupled system analysis yields better frequency with comparing to the classic method. The proposed methodology provides a novel alternative for nonlinear dynamic analysis of gyroscopic continua.

  5. PI controller design for indirect vector controlled induction motor: A decoupling approach.

    Science.gov (United States)

    Jain, Jitendra Kr; Ghosh, Sandip; Maity, Somnath; Dworak, Pawel

    2017-09-01

    Decoupling of the stator currents is important for smoother torque response of indirect vector controlled induction motors. Typically, feedforward decoupling is used to take care of current coupling that requires exact knowledge of motor parameters, additional circuitry and signal processing. In this paper, a method is proposed to design the regulating proportional-integral gains that minimize coupling without any requirement of the additional decoupler. The variation of the coupling terms for change in load torque is considered as the performance measure. An iterative linear matrix inequality based H ∞ control design approach is used to obtain the controller gains. A comparison between the feedforward and the proposed decoupling schemes is presented through simulation and experimental results. The results show that the proposed scheme is simple yet effective even without additional block or burden on signal processing. Copyright © 2017 ISA. Published by Elsevier Ltd. All rights reserved.

  6. Decoupling Control for Dual-Winding Bearingless Switched Reluctance Motor Based on Improved Inverse System Method

    Directory of Open Access Journals (Sweden)

    Zhiying Zhu

    2017-01-01

    Full Text Available Dual-winding bearingless switched reluctance motor (BSRM is a multivariable high-nonlinear system characterized by strong coupling, and it is not completely reversible. In this paper, a new decoupling control strategy based on improved inverse system method is proposed. Robust servo regulator is adopted for the decoupled plants to guarantee control performances and robustness. A phase dynamic compensation filter is also designed to improve system stability at high-speed. In order to explain the advantages of the proposed method, traditional methods are compared. The tracking and decoupling characteristics as well as disturbance rejection and robustness are deeply analyzed. Simulation and experiments results show that the decoupling control of dual-winding BSRM in both reversible and irreversible domains can be successfully resolved with the improved inverse system method. The stability and robustness problems induced by inverse controller can be effectively solved by introducing robust servo regulator and dynamic compensation filter.

  7. NMR Artefacts Caused by Decoupling of Multiple-Spin Coherences: Improved SLAP Experiment.

    Czech Academy of Sciences Publication Activity Database

    Blechta, Vratislav; Schraml, Jan

    2015-01-01

    Roč. 53, č. 6 (2015), s. 460-466 ISSN 0749-1581 Institutional support: RVO:67985858 Keywords : composite decoupling * SLAP * BIRD Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 1.226, year: 2015

  8. Neutronic performance of decoupled poisoned and unpoisoned composite moderators for high resolution experiments

    International Nuclear Information System (INIS)

    Kai, Tetsuya; Harada, Masahide; Watanabe, Noboru; Teshigawara, Makoto; Sakata, Hideaki; Ikeda, Yujiro

    2001-01-01

    We studied decoupled poisoned and un-poisoned composite moderators consisting of 20 mm thick hydrogen and 30 mm thick light water. The neutron pulses from un-poisoned one were much broader with longer decay times than a simple decoupled hydrogen moderator in 50 mm thickness. It was also found that the poisoned composite moderator provides higher pulse peak intensities relative to the hydrogen moderator (poisoned at 20 mm) below several tens meV with no penalty of pulse width. (author)

  9. A Decoupled MPC for Motion Control in Robotino Using a Geometric Approach

    Science.gov (United States)

    Straßberger, Daniel; Mercorelli, Paolo; Sergiyenko, Oleg

    2015-11-01

    This paper proposes a controller for motion control of the Robotino. The proposed controller considers a functional decoupling control strategy realized using a geometric approach and the invertibility property of the DC-drives with which the Robotino is equipped. Horizontal, Vertical and Angular motions are considered and once the decoupling between these motions is obtained, a Model Predictive Control (MPC) strategy is used in combination with the inverse DC-drive model. Simulation results using real data of Robotino are shown.

  10. Viscous Decoupling Transitions for Individually Dragged Particles in Systems with Quenched Disorder

    OpenAIRE

    Reichhardt, C. J. Olson; Reichhardt, C.

    2008-01-01

    We show that when an individual particle is dragged through an assembly of other particles in the presence of quenched disorder, a viscous decoupling transition occurs between the dragged particle and the surrounding particles which is controlled by the quenched disorder. A counterintuitive consequence of this transition is that the velocity of the dragged particle can be increased by increasing the strength or density of the quenched disorder. The decoupling transition can also occur when th...

  11. Generalized Theory and Decoupled Evaluation Criteria for Unmatched Despreading of Modernized GNSS Signals.

    Science.gov (United States)

    Zhang, Jiayi; Yao, Zheng; Lu, Mingquan

    2016-07-20

    In order to provide better navigation service for a wide range of applications, modernized global navigation satellite systems (GNSS) employs increasingly advanced and complicated techniques in modulation and multiplexing of signals. This trend correspondingly increases the complexity of signal despreading at the receiver when matched receiving is used. Considering the numerous low-end receiver who can hardly afford such receiving complexity, it is feasible to apply some receiving strategies, which uses simplified forms of local despreading signals, which is termed unmatched despreading. However, the mismatch between local signal and received signal causes performance loss in code tracking, which is necessary to be considered in the theoretical evaluation methods of signals. In this context, we generalize the theoretical signal evaluation model for unmatched receiving. Then, a series of evaluation criteria are proposed, which are decoupled from unrelated influencing factors and concentrates on the key factors related to the signal and its receiving, thus better revealing the inherent performance of signals. The proposed evaluation criteria are used to study two GNSS signals, from which constructive guidance are derived for receivers and signal designer.

  12. STATISTICAL DECOUPLING OF A LAGRANGIAN FLUID PARCEL IN NEWTONIAN COSMOLOGY

    International Nuclear Information System (INIS)

    Wang, Xin; Szalay, Alex

    2016-01-01

    The Lagrangian dynamics of a single fluid element within a self-gravitational matter field is intrinsically non-local due to the presence of the tidal force. This complicates the theoretical investigation of the nonlinear evolution of various cosmic objects, e.g., dark matter halos, in the context of Lagrangian fluid dynamics, since fluid parcels with given initial density and shape may evolve differently depending on their environments. In this paper, we provide a statistical solution that could decouple this environmental dependence. After deriving the evolution equation for the probability distribution of the matter field, our method produces a set of closed ordinary differential equations whose solution is uniquely determined by the initial condition of the fluid element. Mathematically, it corresponds to the projected characteristic curve of the transport equation of the density-weighted probability density function (ρPDF). Consequently it is guaranteed that the one-point ρPDF would be preserved by evolving these local, yet nonlinear, curves with the same set of initial data as the real system. Physically, these trajectories describe the mean evolution averaged over all environments by substituting the tidal tensor with its conditional average. For Gaussian distributed dynamical variables, this mean tidal tensor is simply proportional to the velocity shear tensor, and the dynamical system would recover the prediction of the Zel’dovich approximation (ZA) with the further assumption of the linearized continuity equation. For a weakly non-Gaussian field, the averaged tidal tensor could be expanded perturbatively as a function of all relevant dynamical variables whose coefficients are determined by the statistics of the field

  13. Myological variability in a decoupled skeletal system: batoid cranial anatomy.

    Science.gov (United States)

    Kolmann, Matthew A; Huber, Daniel R; Dean, Mason N; Grubbs, R Dean

    2014-08-01

    Chondrichthyans (sharks, batoids, and chimaeras) have simple feeding mechanisms owing to their relatively few cranial skeletal elements. However, the indirect association of the jaws to the cranium (euhyostylic jaw suspension) has resulted in myriad cranial muscle rearrangements of both the hyoid and mandibular elements. We examined the cranial musculature of an abbreviated phylogenetic representation of batoid fishes, including skates, guitarfishes and with a particular focus on stingrays. We identified homologous muscle groups across these taxa and describe changes in gross morphology across developmental and functional muscle groups, with the goal of exploring how decoupling of the jaws from the skull has effected muscular arrangement. In particular, we focus on the cranial anatomy of durophagous and nondurophagous batoids, as the former display marked differences in morphology compared to the latter. Durophagous stingrays are characterized by hypertrophied jaw adductors, reliance on pennate versus fusiform muscle fiber architecture, tendinous rather than aponeurotic muscle insertions, and an overall reduction in mandibular kinesis. Nondurophagous stingrays have muscles that rely on aponeurotic insertions onto the skeletal structure, and display musculoskeletal specialization for jaw protrusion and independent lower jaw kinesis, relative to durophagous stingrays. We find that among extant chondrichthyans, considerable variation exists in the hyoid and mandibular muscles, slightly less so in hypaxial muscles, whereas branchial muscles are overwhelmingly conserved. As chondrichthyans occupy a position sister to all other living gnathostomes, our understanding of the structure and function of early vertebrate feeding systems rests heavily on understanding chondrichthyan cranial anatomy. Our findings highlight the incredible variation in muscular complexity across chondrichthyans in general and batoids in particular. © 2014 Wiley Periodicals, Inc.

  14. Decoupling Control Design for the Module Suspension Control System in Maglev Train

    Directory of Open Access Journals (Sweden)

    Guang He

    2015-01-01

    Full Text Available An engineering oriented decoupling control method for the module suspension system is proposed to solve the coupling issues of the two levitation units of the module in magnetic levitation (maglev train. According to the format of the system transfer matrix, a modified adjoint transfer matrix based decoupler is designed. Then, a compensated controller is obtained in the light of a desired close loop system performance. Optimization between the performance index and robustness index is also carried out to determine the controller parameters. However, due to the high orders and complexity of the obtained resultant controller, model reduction method is adopted to get a simplified controller with PID structure. Considering the modeling errors of the module suspension system as the uncertainties, experiments have been performed to obtain the weighting function of the system uncertainties. By using this, the robust stability of the decoupled module suspension control system is checked. Finally, the effectiveness of the proposed decoupling design method is validated by simulations and physical experiments. The results illustrate that the presented decoupling design can result in a satisfactory decoupling and better dynamic performance, especially promoting the reliability of the suspension control system in practical engineering application.

  15. Using lagged dependence to identify (de)coupled surface and subsurface soil moisture values

    Science.gov (United States)

    Carranza, Coleen D. U.; van der Ploeg, Martine J.; Torfs, Paul J. J. F.

    2018-04-01

    Recent advances in radar remote sensing popularized the mapping of surface soil moisture at different spatial scales. Surface soil moisture measurements are used in combination with hydrological models to determine subsurface soil moisture values. However, variability of soil moisture across the soil column is important for estimating depth-integrated values, as decoupling between surface and subsurface can occur. In this study, we employ new methods to investigate the occurrence of (de)coupling between surface and subsurface soil moisture. Using time series datasets, lagged dependence was incorporated in assessing (de)coupling with the idea that surface soil moisture conditions will be reflected at the subsurface after a certain delay. The main approach involves the application of a distributed-lag nonlinear model (DLNM) to simultaneously represent both the functional relation and the lag structure in the time series. The results of an exploratory analysis using residuals from a fitted loess function serve as a posteriori information to determine (de)coupled values. Both methods allow for a range of (de)coupled soil moisture values to be quantified. Results provide new insights into the decoupled range as its occurrence among the sites investigated is not limited to dry conditions.

  16. Decoupling economic growth from CO2 emissions: A decomposition analysis of China's household energy consumption

    Directory of Open Access Journals (Sweden)

    Xiao-Wei Ma

    2016-09-01

    Full Text Available This paper analyzes Chinese household CO2 emissions in 1994–2012 based on the Logarithmic Mean Divisia Index (LMDI structure decomposition model, and discusses the relationship between household CO2 emissions and economic growth based on a decoupling indicator. The results show that in 1994–2012, household CO2 emissions grew in general and displayed an accelerated growth trend during the early 21st century. Economic growth leading to an increase in energy consumption is the main driving factor of CO2 emission growth (an increase of 1.078 Gt CO2 with cumulative contribution rate of 55.92%, while the decline in energy intensity is the main cause of CO2 emission growth inhibition (0.723 Gt CO2 emission reduction with cumulative contribution rate of 38.27%. Meanwhile, household CO2 emissions are in a weak state of decoupling in general. The change in CO2 emissions caused by population and economic growth shows a weak decoupling and expansive decoupling state, respectively. The CO2 emission change caused by energy intensity is in a state of strong decoupling, and the change caused by energy consumption structure fluctuates between a weak and a strong decoupling state.

  17. Decomposing the Decoupling of Water Consumption and Economic Growth in China’s Textile Industry

    Directory of Open Access Journals (Sweden)

    Yi Li

    2017-03-01

    Full Text Available Unprecedented economic achievement in China’s textile industry (TI has occurred along with rising water consumption. The goal of industrial sustainable development requires the decoupling of economic growth from resource consumption. This paper examines the relationship between water consumption and economic growth, and the internal influence mechanism of China’s TI and its three sub-sectors: the manufacture of textiles (MT sector, the Manufacture of Textile Wearing Apparel, Footwear, and Caps (MTWA sector, and the manufacture of chemical fibers (MCF sector. A decoupling analysis was performed and the Laspeyres decomposition method was applied to the period from 2001 to 2014. We showed that six of the fourteen years analyzed (2003, 2006, 2008, 2009, 2011, and 2013 exhibited a strong decoupling effect and three of the fourteen years (2005, 2007, and 2010 exhibited a weak decoupling effect. Overall, China’s TI experienced a good decoupling between economic growth and water consumption from 2002 to 2014. For the three sub-sectors, the MTWA sector experienced a more significant positive decoupling than the MT and MCF sectors. The decomposition results confirm that the industrial scale factor is the most important driving force of China’s TI water consumption increase, while the water efficiency factor is the most important inhibiting force. The industrial structure adjustment does not significantly affect water consumption. The industrial scale and water use efficiency factors are also the main determinants of change in water consumption for the three sub-sectors.

  18. Decoupling multimode vibrational relaxations in multi-component gas mixtures: Analysis of sound relaxational absorption spectra

    International Nuclear Information System (INIS)

    Zhang Ke-Sheng; Wang Shu; Zhu Ming; Ding Yi; Hu Yi

    2013-01-01

    Decoupling the complicated vibrational—vibrational (V—V) coupling of a multimode vibrational relaxation remains a challenge for analyzing the sound relaxational absorption in multi-component gas mixtures. In our previous work [Acta Phys. Sin. 61 174301 (2012)], an analytical model to predict the sound absorption from vibrational relaxation in a gas medium is proposed. In this paper, we develop the model to decouple the V—V coupled energy to each vibrational—translational deexcitation path, and analyze how the multimode relaxations form the peaks of sound absorption spectra in gas mixtures. We prove that a multimode relaxation is the sum of its decoupled single-relaxation processes, and only the decoupled process with a significant isochoric-molar-heat can be observed as an absorption peak. The decoupling model clarifies the essential processes behind the peaks in spectra arising from the multimode relaxations in multi-component gas mixtures. The simulation validates the proposed decoupling model. (electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics)

  19. Decoupling as a mechanism of change in mindfulness and acceptance: a literature review.

    Science.gov (United States)

    Levin, Michael E; Luoma, Jason B; Haeger, Jack A

    2015-11-01

    A growing body of research within the acceptance and mindfulness-based therapies suggests that these treatments may function in part by reducing or eliminating (i.e., decoupling) the normative relationships between internal experiences and other internal/overt behavior. Examples of decoupling effects found in this review include reduced relationships between urges to smoke and smoking behavior, between dysphoric mood and depressive cognitions, and between pain intensity and persistence in a painful task. A literature review identified 44 studies on acceptance and mindfulness that demonstrated decoupling effects. Overall, preliminary evidence for decoupling effects were found across a broad range of problem areas, including substance abuse, depression, eating disorders, overeating, chronic pain, anxiety, relationships, anger, avoidance behavior, and self-harm, with the strongest evidence currently available in the area of substance abuse. However, the review also notes a general lack of replication studies on decoupling effects and the need for more well-powered and controlled research testing specific decoupling hypotheses. © The Author(s) 2015.

  20. Deep magmatism alters and erodes lithosphere and facilitates decoupling of Rwenzori crustal block

    Science.gov (United States)

    Wallner, Herbert; Schmeling, Harro

    2013-04-01

    The title is the answer to the initiating question "Why are the Rwenzori Mountains so high?" posed at the EGU 2008. Our motivation origins in the extreme topography of the Rwenzori Mountains. The strong, cold proterozoic crustal horst is situated between rift segments of the western branch of the East African Rift System. Ideas of rift induced delamination (RID) and melt induced weakening (MIW) have been tested with one- and two-phase flow physics. Numerical model parameter variations and new observations lead to a favoured model with simple and plausible definitions. Results coincide in the scope of their comparability with different observations or vice versa reduce ambiguity and uncertainties in model input. Principle laws of the thermo-mechanical physics are the equations of conservation of mass, momentum, energy and composition for a two-phase (matrix-melt) system with nonlinear rheology. A simple solid solution model determines melting and solidification under consideration of depletion and enrichment. The Finite Difference Method with markers is applied to visco-plastic flow using the streamfunction in an Eulerian formulation in 2D. The Compaction Boussinesq and the high Prandtl number Approximation are employed. Lateral kinematic boundary conditions provide long-wavelength asthenospheric upwelling and extensional stress conditions. Partial melts are generated in the asthenosphere, extracted above a critical fraction, and emplaced into a given intrusion level. Temperature anomalies positioned beneath the future rifts, the sole specialization to the Rwenzori situation, localize melts which are very effective in weakening the lithosphere. Convection patterns tend to generate dripping instabilities at the lithospheric base; multiple slabs detach and distort uprising asthenosphere; plumes migrate, join and split. In spite of appearing chaotic flow behaviour a characteristic recurrence time of high velocity events (drips, plumes) emerges. Chimneys of increased

  1. Have Market-oriented Reforms Decoupled China’s CO2 Emissions from Total Electricity Generation? An Empirical Analysis

    Directory of Open Access Journals (Sweden)

    Wei Shang

    2016-05-01

    Full Text Available Achieving the decoupling of electric CO2 emissions from total electricity generation is important in ensuring the sustainable socioeconomic development of China. To realize this, China implemented market-oriented reforms to its electric power industry at the beginning of 2003. This study used the Tapio decoupling index, the Laspeyres decomposition algorithm, and decoupling-related data from 1993 to 2012 to evaluate the effect of these reforms. Several conclusions can be drawn based on the empirical analysis. (1 The reforms changed the developmental trend of the decoupling index and facilitated its progress towards strong decoupling. (2 The results forecasted through fitting the curve to the decoupling index indicate that strong decoupling would be realized by 2030. (3 Limiting the manufacturing development and upgrading the generation equipment of the thermal power plants are essential for China to achieve strong decoupling at an early date. (4 China should enhance regulatory pressures and guidance for appropriate investment in thermal power plants to ensure the stable development of the decoupling index. (5 Transactions between multiple participants and electricity price bidding play active roles in the stable development of the decoupling index.

  2. Organic History and Ice-Rock Decoupling on Enceladus

    Science.gov (United States)

    Zolotov, M. Y.

    2007-12-01

    .) remained unfrozen and decoupled the ice shell from underlying salt deposits and rocks. Even after oil solidification, if it occurred, the organic layer had a lower viscosity than salts and ice. An uneven pressure and/or topography at the ice-salt boundary could have led to preferential oil (and salt?) accumulation below the south polar region. Throughout history (and today), the uneven oil-rich layer could have favored tidal motions and heat generation at the bottom of the ice shell.

  3. Investigation of (de)coupling between surface and subsurface soil moisture using a Distributed Lag Non-linear Model (DNLM)

    Science.gov (United States)

    Carranza, Coleen; van der Ploeg, Martine

    2017-04-01

    Accurate estimates of water content in the soil profile are essential for environmental and climate modeling studies. Current trends for estimating profile soil moisture incorporate remote sensing methods for mapping soil moisture at greater spatial coverage but is limited to the upper soil layers (e.g. 5cm for radar satellites). Data assimilation methods offer promising computational techniques to translate mapped surface soil moisture to estimates of profile soil moisture, in conjunction with physical models. However, a variety of factors, such as differences in the drying rates, can lead to "decoupling" (Capehart and Carlson, 1997) of surface and subsurface soil moisture. In other words, surface soil moisture conditions no longer reflect or represent subsurface conditions. In this study, we investigated the relation and observed decoupling between surface and subsurface soil moisture from 15-minute interval time series datasets in four selected Dutch agricultural fields (SM_05, SM_09, SM_13, SM_20) from the soil moisture network in Twente region. The idea is that surface soil moisture conditions will be reflected in the subsurface after a certain time lag because of its movement or flow from the surface. These lagged associations were analysed using distributed lag non-linear model (DLNM). This statistical technique provides a framework to simultaneously represent non-linear exposure-response dependencies and delayed effects. DNLM was applied to elucidate which surface soil moisture conditions resulted in a high association to subsurface values, indicating good correlation between the two zones. For example, initial results for this ongoing study from SM_13 show an overall low but increasing association from dry to intermediate soil moisture values (0 to 25%). At this range of values, we say that the two zones are decoupled. Above these values towards near saturated conditions ( 40%), associations between the two zones remain high. For predictor

  4. INIS: Authority list for journal titles

    International Nuclear Information System (INIS)

    2003-01-01

    This is the twenty-ninth revision of the INIS: Authority List for Journal Titles (IAEA-INIS-11). It lists the titles of 12 990 journals which have contained articles within the scope of INIS. The purpose of this report is to provide descriptive cataloguers with a standard entry for the full title of a journal. In addition to the full journal title, the ISSN (International Standard Serial Number), administered by the ISSN International Centre, Paris, France, and/or CODEN, assigned by Chemical Abstracts Service, USA, are given in this manual. In order to help the reader to find titles easily, the list is divided into two parts. In Part I, the full journal titles are grouped by country or international organization responsible for coverage and ordered alphabetically. In Part II, the full journal titles of all countries or international organizations are arranged alphabetically. The country name or the international organization name responsible for coverage of the journal title to INIS is entered in parentheses. Journal titles marked with an asterisk are regularly scanned by INIS. Titles that have been identified by INIS Centres as 'Key Journals' are marked with the hash sign

  5. Decomposition Analysis in Decoupling Transport Output from Carbon Emissions in Guangdong Province, China

    Directory of Open Access Journals (Sweden)

    Yalan Zhao

    2016-04-01

    Full Text Available With a continuously growing share of the world’s overall energy consumption, the transport sector has been acknowledged as one of the most important contributors to global carbon emissions. This paper applies a complete decomposition and decoupling analysis to investigate and quantitatively analyze the main factors influencing the energy-related carbon emissions of the transport (TCE sector during 1995–2012 in Guangdong, the richest and most populated province in China. Results showed that decoupling level between transport output and TCE was relatively low, especially when compared with year 1995, in which case it remained as expansive coupling. Optimization of tertiary industry structure was the main factor inhibiting TCE increase. However the rapid growth of GDP per capita and population was more powerful at boosting TCE, resulting in elasticity index rising directly. 2005 was a turning point when environmental friendly policies took action, after which decoupling state improved significantly, achieving weak decoupling when comparing adjacent years. By studying TCE and its components, we found that the National 5-Year Plan policy impacts TCE tremendously, which leads to a 5-year periodic pattern of fluctuations. This highlights policy as potentially the most important factor behind Guangdong’s decoupling effort, dwarfing the impact from energy and other inner-drivers.

  6. Deep-subwavelength Decoupling for MIMO Antennas in Mobile Handsets with Singular Medium.

    Science.gov (United States)

    Xu, Su; Zhang, Ming; Wen, Huailin; Wang, Jun

    2017-09-22

    Decreasing the mutual coupling between Multi-input Multi-output (MIMO) antenna elements in a mobile handset and achieving a high data rate is a challenging topic as the 5 th -generation (5G) communication age is coming. Conventional decoupling components for MIMO antennas have to be re-designed when the geometries or frequencies of antennas have any adjustment. In this paper, we report a novel metamaterial-based decoupling strategy for MIMO antennas in mobile handsets with wide applicability. The decoupling component is made of subwavelength metal/air layers, which can be treated as singular medium over a broad frequency band. The flexible applicable property of the decoupling strategy is verified with different antennas over different frequency bands with the same metamaterial decoupling element. Finally, 1/100-wavelength 10-dB isolation is demonstrated for a 24-element MIMO antenna in mobile handsets over the frequency band from 4.55 to 4.75 GHz.

  7. MEDLARS Abbreviations for Medical Journal Titles

    Science.gov (United States)

    Charen, Thelma; Gillespie, Constantine J.

    1971-01-01

    The National Library of Medicine announces its adoption of the Anglo-American standard for the formulation of journal title abbreviations according to the American National Standard for the Abbreviation of Titles of Periodicals (1969), with individual words abbreviated, in turn, according to the International List of Periodical Title Word Abbreviations (1970). The history of the activity of the specific Z39 Committee of USASI (now ANSI) concerned with journal title abbreviations is reviewed, covering the period from 1962 to the present. A history of the National Clearinghouse for Periodical Title Word Abbreviations and of the International List is also given. Former NLM usage is compared with the forms of the present International List and examples show the major changes in NLM abbreviations. The NLM Rules for Abbreviation of Periodical Titles as derived from the new standard are appended. PMID:5146764

  8. Land Titles and Rice Production in Vietnam

    DEFF Research Database (Denmark)

    Van Den Broeck, Katleen; Newman, Carol; Tarp, Finn

    In most of the empirical literature on land titling, the household is regarded as unitary, and land rights are found to have ambiguous effects on land allocation, investment and productivity. Using data from 12 provinces in Vietnam, we diversify land titles, and show in a household fixed effects...... analysis of plot level rice yields that land titles are indeed important. Only exclusively held titles have the expected positive effects, and the positive effect on yields is found in male headed households. Furthermore, a household level rice yield function reveals that exclusive user rights...... are inefficiency decreasing, while jointly held user rights have no efficiency effects. Finally, once the gender of the head of household is controlled for, exclusively held female titles have a greater positive effect on the efficiency of the household than that of male held titles....

  9. Land Titles and Rice Production in Vietnam

    DEFF Research Database (Denmark)

    Van Den Broeck, Katleen; Newman, Carol; Tarp, Finn

    In most of the empirical literature on land titling, the household is regarded as unitary, and land rights are found to have ambiguous effects on land allocation, investment and productivity. Using data from 12 provinces in Vietnam, we diversify land titles, and show in a household fixed effects...... analysis of plot level rice yields that land titles are indeed important. Only exclusively held titles have the expected positive effects, and the positive effect on yields is found in male headed households. Furthermore, a household level rice yield function reveals that exclusive user rights...... are inefficiency decreasing, while jointly held user rights have no efficiency effects. Finally, once the gender of the head of household is controlled for, exclusively held female titles have a greater positive effect on the efficiency of the household than that of male held titles...

  10. Decoupling Agricultural Nonpoint Source Pollution from Crop Production: A Case Study of Heilongjiang Land Reclamation Area, China

    Directory of Open Access Journals (Sweden)

    Qingshan Yang

    2017-06-01

    Full Text Available Modern agriculture often leads to nonpoint source pollution. From the perspective of a decoupling analysis, this research evaluates the relationship between crop production and agricultural nonpoint source pollution (via fertilizer application, using the Heilongjiang land reclamation area as a case study. As it is the largest commodity grain base and green food base in China, more than 80% of water pollution in this area comes from fertilizer application. This study adopts an export coefficient model to hindcast nitrogen loss delivered to surface water via fertilizer application and conduct a further analysis of decoupling agricultural nonpoint source pollution from crop production. The results indicated that weak decoupling frequently occurred. However, this tendency was not steady in the period 2001–2012, and weak decoupling was typical in each branch based on the average value. Regarding the example of decoupling agricultural nonpoint source pollution from rice production, weak decoupling occurred more often, but this tendency was not steady over time. In addition, expansive coupling occurred in 2006, 2010 and 2012, and there were no definite signs of it improving. All branches, except for the Suihua branch, reached the degree of weak decoupling. A basic fact is that a decoupling tendency and environmental deterioration coexist in both the past and present. The decoupling analysis will contribute to localized strategies for sustainable agricultural development.

  11. One-Shot Decoupling and Page Curves from a Dynamical Model for Black Hole Evaporation.

    Science.gov (United States)

    Brádler, Kamil; Adami, Christoph

    2016-03-11

    One-shot decoupling is a powerful primitive in quantum information theory and was hypothesized to play a role in the black hole information paradox. We study black hole dynamics modeled by a trilinear Hamiltonian whose semiclassical limit gives rise to Hawking radiation. An explicit numerical calculation of the discretized path integral of the S matrix shows that decoupling is exact in the continuous limit, implying that quantum information is perfectly transferred from the black hole to radiation. A striking consequence of decoupling is the emergence of an output radiation entropy profile that follows Page's prediction. We argue that information transfer and the emergence of Page curves is a robust feature of any multilinear interaction Hamiltonian with a bounded spectrum.

  12. Decoupling capabilities of split-loop resonator structure for 7 Tesla MRI surface array coils

    Science.gov (United States)

    Hurshkainen, A.; Kurdjumov, S.; Simovski, C.; Glybovski, S.; Melchakova, I.; van den Berg, C. A. T.; Raaijmakers, A.; Belov, P.

    2017-09-01

    In this work we studied electromagnetic properties of one-dimentional periodic structures composed of split-loop res-onators (SLRs) and investigated their capabilities in decoupling of two dipole antennas for full-body magnetic resonance imaging (MRI). Two different finite structures comprising a single-SLR and a double-SLR constitutive elements were studied. Numerical simulations of the structures were performed to evaluate their decoupling capabilities. As it was demonstrated two dipole antennas equipped with either a single or a double-SLR structure exhibit high isolation even for an electrically short distance between the dipoles. Double-SLR structure while dramatically improving isolation of the dipoles keeps the field created by each of the decoupled dipoles comparable with one of a single dipole inside the target area.

  13. D-FNN Based Modeling and BP Neural Network Decoupling Control of PVC Stripping Process

    Directory of Open Access Journals (Sweden)

    Shu-zhi Gao

    2014-01-01

    Full Text Available PVC stripping process is a kind of complicated industrial process with characteristics of highly nonlinear and time varying. Aiming at the problem of establishing the accurate mathematics model due to the multivariable coupling and big time delay, the dynamic fuzzy neural network (D-FNN is adopted to establish the PVC stripping process model based on the actual process operation datum. Then, the PVC stripping process is decoupled by the distributed neural network decoupling module to obtain two single-input-single-output (SISO subsystems (slurry flow to top tower temperature and steam flow to bottom tower temperature. Finally, the PID controller based on BP neural networks is used to control the decoupled PVC stripper system. Simulation results show the effectiveness of the proposed integrated intelligent control method.

  14. Efficient dipolar double quantum filtering under magic angle spinning without a (1)H decoupling field.

    Science.gov (United States)

    Courtney, Joseph M; Rienstra, Chad M

    2016-08-01

    We present a systematic study of dipolar double quantum (DQ) filtering in (13)C-labeled organic solids over a range of magic-angle spinning rates, using the SPC-n recoupling sequence element with a range of n symmetry values from 3 to 11. We find that efficient recoupling can be achieved for values n⩾7, provided that the (13)C nutation frequency is on the order of 100kHz or greater. The decoupling-field dependence was investigated and explicit heteronuclear decoupling interference conditions identified. The major determinant of DQ filtering efficiency is the decoupling interference between (13)C and (1)H fields. For (13)C nutation frequencies greater than 75kHz, optimal performance is observed without an applied (1)H field. At spinning rates exceeding 20kHz, symmetry conditions as low as n=3 were found to perform adequately. Copyright © 2016 Elsevier Inc. All rights reserved.

  15. Decoupling control of steering and driving system for in-wheel-motor-drive electric vehicle

    Science.gov (United States)

    Zhang, Han; Zhao, Wanzhong

    2018-02-01

    To improve the maneuverability and stability of in-wheel-motor-drive electric vehicle, a control strategy based on nonlinear decoupling control method is proposed in this paper, realizing the coordinated control of the steering and driving system. At first, the nonlinear models of the in-wheel-motor-drive electric vehicle and its sub-system are constructed. Then the inverse system decoupling theory is applied to decompose the nonlinear system into several independent subsystems, which makes it possible to realize the coordinated control of each subsystem. Next, the μ-Synthesis theory is applied to eliminate the influence of model uncertainty, improving the stability, robustness and tracking performance of in-wheel-motor-drive electric vehicle. Simulation and experiment results and numerical analyses, based on the electric vehicle actuated by in-wheel-motors, prove that the proposed control method is effective to accomplish the decoupling control of the steering and driving system in both simulation and real practice.

  16. Coupling Mechanism and Decoupled Suspension Control Model of a Half Car

    Directory of Open Access Journals (Sweden)

    Hailong Zhang

    2016-01-01

    Full Text Available A structure decoupling control strategy of half-car suspension is proposed to fully decouple the system into independent front and rear quarter-car suspensions in this paper. The coupling mechanism of half-car suspension is firstly revealed and formulated with coupled damping force (CDF in a linear function. Moreover, a novel dual dampers-based controllable quarter-car suspension structure is proposed to realize the independent control of pitch and vertical motions of the half car, in which a newly added controllable damper is suggested to be installed between the lower control arm and connection rod in conventional quarter-car suspension structure. The suggested damper constantly regulates the half-car pitch motion posture in a smooth and steady operation condition meantime achieving the expected completely structure decoupled control of the half-car suspension, by compensating the evolved CDF.

  17. Investigation of marine stratocumulus under coupled and decoupled conditions over the arm Azores site

    Science.gov (United States)

    Schwantes, Adam Christopher

    Stratocumuli are a type of low clouds composed of individual convective elements that together form a continuous layer of clouds. Stratocumuli cover large regions of the Earth's surface, which make them important components in the Earth's radiation budget. Stratocumuli strongly reflect solar shortwave radiation, while weakly affecting outgoing longwave radiation. This leads to a strong radiative cooling effect that affects the Earth's radiation budget. Therefore it is important to investigate the mechanisms that affect the longevity of stratocumuli, so that their impact on the Earth's radiation budget can be fully understood. One mechanism that is currently being studied as influencing the lifetime of such cloud layers is boundary layer/surface coupling. It has been shown than in some regions (i.e. the west coast of South America) stratocumuli tend to break up when the boundary layer is decoupled with the surface, because they are cut off from their moisture source. This study will investigate the macro- and micro-physical properties of stratocumuli when boundary layers are either coupled to or decoupled from the surface. This will help advance understanding of the effects these macro- and micro-physical properties have on the lifetime of stratocumuli under different boundary layer conditions. This study used the Department of Energy Atmospheric Radiation Measurement (DOE ARM) mobile measurements facility (AMF) at the Azores site from June 2009 to December 2010. The measurements that were used include temperature profiles from radiosondes, cloud liquid water path (LWP) retrieved from the Microwave radiometer, and cloud base and top heights derived from W-band ARM Cloud Radar and lidar. Satellite images provided by the NASA Langley Research Center were also used to visually decipher cloud types over the region so that only single-layered stratocumuli cases are used in the study. To differentiate between coupled and decoupled cloud layers, two methods are used. The

  18. Decomposing the decoupling of Danish road freight traffic growth and economic growth

    DEFF Research Database (Denmark)

    Kveiborg, Ole; Fosgerau, Mogens

    2007-01-01

    In recent years many European countries have seen a decoupling of the growth in road freight traffic (vehicle kilometres) from economic growth. A similar decoupling has not been observed in road freight transport (tonne kilometres). In this paper the historical growth in national Danish road...... freight traffic and transport is attributed to causes using a Divisia, index decomposition method. It is demonstrated that overall road freight traffic growth is a consequence of often opposite pointing growth effects in the underlying factors. The observed decoupling of road freight traffic growth from...... economic growth is mainly the result of use of larger vehicles, increasing average loads, and less empty running. Growth in road freight transport is primarily caused by growth in production. A decrease in the number of tons lifted per tonne produced (the handling factor) is offset by an increase...

  19. Note: Decoupling design for high frequency piezoelectric ultrasonic transducers with their clamping connections

    Energy Technology Data Exchange (ETDEWEB)

    Wang, F. J., E-mail: wangfujun@tju.edu.cn; Liang, C. M.; Tian, Y. L.; Zhao, X. Y.; Zhang, D. W. [Tianjin Key Laboratory of Equipment Design and Manufacturing Technology, School of Mechanical Engineering, Tianjin University, Tianjin 300072 (China); Zhang, H. J. [Tianjin Key Laboratory of Modern Mechatronics Equipment Technology, School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387 (China)

    2015-12-15

    This work presents the flexure-mechanism based decoupling design between high frequency piezoelectric ultrasonic transducers and their clamping connections to improve ultrasonic energy transmission efficiency. The ring, prismatic beam, and circular notched hinge based flanges were presented, and the crucial geometric dimensions of the transducers with the flexure decoupling flanges were determined. Finite element analysis (FEA) was carried out to investigate the dynamic characteristics of the transducers. Finally, experiments were conducted to examine and verify the effects of the proposed decoupling flanges. FEA and experimental results show that smaller frequency deviations and larger tip displacement amplitudes have been achieved by using the transducers with the flexure flanges compared with the transducer with a rigid ring-type flange, and thus the ultrasonic transmission efficiency can be improved through the flexure flanges.

  20. A Robust DC-Split-Capacitor Power Decoupling Scheme for Single-Phase Converter

    DEFF Research Database (Denmark)

    Yao, Wenli; Loh, Poh Chiang; Tang, Yi

    2017-01-01

    , instead of the usual single dc-link capacitor bank. Methods for regulating this power decoupler have earlier been developed, but almost always with equal capacitances assumed for forming the dc-split capacitor, even though it is not realistic in practice. The assumption should, hence, be evaluated more......Instead of bulky electrolytic capacitors, active power decoupling circuit can be introduced to a single-phase converter for diverting second harmonic ripple away from its dc source or load. One possible circuit consists of a half-bridge and two capacitors in series for forming a dc-split capacitor...... thoroughly, especially when it is shown in the paper that even a slight mismatch can render the power decoupling scheme ineffective and the IEEE 1547 standard to be breached. A more robust compensation scheme is, thus, needed for the dc-split capacitor circuit, as proposed and tested experimentally...

  1. Decoupling in order to reduce the negative environmental impact from transport logistics. From theory to reality

    International Nuclear Information System (INIS)

    Swahn, Magnus

    2006-04-01

    This report deals with the issue of decoupling from a bottom-up approach and thereby works as a complementary report to 'A closer Look at Road Freight Transport and Economic Growth in Sweden' published by the Swedish Environmental Protection Agency. The freight transport logistics market is steadily growing in Sweden and the EU. Between 1990 and 2002 the growth in Sweden was 15 % and in EU15 33 %. The increase has primarily occurred within road freight. Economics of scale and low cost for transport logistics services drives centralisation both within trade and manufacturing. This leads to an increase of the transport work. The objective of this report is to describe decoupling from a business perspective. We have therefore focused on industrial sectors that are the largest drivers of transportation demand. In addition we have included the most relevant providers of transport services. In brief this means - Buyers of transport logistics: Clothing, Furniture, Pulp and paper, Oil and energy, Steel, Mechanical industry, Fast moving goods, and Construction. As sellers of transport logistics services we have focused on: Road transport, Rail transport, Sea transport, and Forwarders. During the work we have ended up in a broad perspective when defining decoupling. In general we work with the concept of decoupling defined as 'breaking the connection between the environmentally negative impacts from transport logistics and economic growth'. The negative impacts we include are: Resource use, Climate, Nature, Health, and Accidents. Our focus is a European perspective from a Swedish platform and our time perspective is from relatively narrow to 2020. The business sector raises doubt on the idea of decoupling transport work and GNP. They are however more positive when discussing decoupling economic growth from negative environmental impacts. When analysing the underlying factors for this development we can se a tremendous growth in the global trade. the paper discuses how

  2. Decoupling social status and status certainty effects on health in macaques: a network approach

    Directory of Open Access Journals (Sweden)

    Jessica J. Vandeleest

    2016-09-01

    Full Text Available Background Although a wealth of literature points to the importance of social factors on health, a detailed understanding of the complex interplay between social and biological systems is lacking. Social status is one aspect of social life that is made up of multiple structural (humans: income, education; animals: mating system, dominance rank and relational components (perceived social status, dominance interactions. In a nonhuman primate model we use novel network techniques to decouple two components of social status, dominance rank (a commonly used measure of social status in animal models and dominance certainty (the relative certainty vs. ambiguity of an individual’s status, allowing for a more complex examination of how social status impacts health. Methods Behavioral observations were conducted on three outdoor captive groups of rhesus macaques (N = 252 subjects. Subjects’ general physical health (diarrhea was assessed twice weekly, and blood was drawn once to assess biomarkers of inflammation (interleukin-6 (IL-6, tumor necrosis factor-alpha (TNF-α, and C-reactive protein (CRP. Results Dominance rank alone did not fully account for the complex way that social status exerted its effect on health. Instead, dominance certainty modified the impact of rank on biomarkers of inflammation. Specifically, high-ranked animals with more ambiguous status relationships had higher levels of inflammation than low-ranked animals, whereas little effect of rank was seen for animals with more certain status relationships. The impact of status on physical health was more straightforward: individuals with more ambiguous status relationships had more frequent diarrhea; there was marginal evidence that high-ranked animals had less frequent diarrhea. Discussion Social status has a complex and multi-faceted impact on individual health. Our work suggests an important role of uncertainty in one’s social status in status-health research. This work also

  3. Comparing the characteristics of highly cited titles and highly alted titles

    Energy Technology Data Exchange (ETDEWEB)

    Didegah, F.; Bowman, T.D.; Bowman, S.; Hartley, J.

    2016-07-01

    This study examines differences in the types of titles for articles that show high altmetric activity (highly alted articles) versus highly cited articles. This work expands on previous research on document titles in combination with a grounded theory approach to develop a codebook in which articles were manually coded based on 11 characteristics. The results show that there are differences and similarities in titles across many of the examined characteristics; highly cited titles and highly mentioned titles on Wikipedia have some similar characteristics such as they have the the highest percentage of substantive words; in addition, there are no or very few titles referencing outside or with humor/lightness on both platforms. Twitter and Facebook also showed some similarities having the highest percentage of humorous/light titles and lowest percentage of substantive words in their titles. (Author)

  4. A critical realist perspective on decoupling negative environmental impacts from housing sector growth and economic growth

    DEFF Research Database (Denmark)

    Xue, Jin

    2012-01-01

    be increased at a rate sufficient to compensate for continual growth in the volume of housing stock. A further elaboration of the topic at an ontological level leads to the conclusion that continual economic growth and long-term environmental sustainability can hardly be combined....... this question from the position of critical realism. An empirical study focusing on the housing sector is conducted, indicating that housing stock growth and economic growth have been, at best, weakly decoupled from environmental impacts. In the long run, it seems implausible that the degree of decoupling can...

  5. Oblique-wing research airplane motion simulation with decoupling control laws

    Science.gov (United States)

    Kempel, Robert W.; Mc Neill, Walter E.; Maine, Trindel A.

    1988-01-01

    A large piloted vertical motion simulator was used to assess the performance of a preliminary decoupling control law for an early version of the F-8 oblique wing research demonstrator airplane. Evaluations were performed for five discrete flight conditions, ranging from low-altitude subsonic Mach numbers to moderate-altitude supersonic Mach numbers. Asymmetric sideforce as a function of angle of attack was found to be the primary cause of both the lateral acceleration noted in pitch and the tendency to roll into left turns and out of right turns. The flight control system was shown to be effective in generally decoupling the airplane and reducing the lateral acceleration in pitch maneuvers.

  6. De-coupling filters for PLC applications; Entkopplungsfilter fuer PLC-Anwendungen. Datensicherheit im Netzwerk

    Energy Technology Data Exchange (ETDEWEB)

    Galli, D.; Kull, P. [Schaffner EMV AG, Luterbach (Switzerland)

    2001-04-23

    Where, why and how to use a de-coupling filter for PLC applications in the right way? These are questions which are being asked now and will become even more important in the near future. In this article you will find the answers to these and other questions regarding PLC systems and the use of decoupling filters. (orig.) [German] Im Zusammenhang mit PLC (Power Line Communication) Anwendungen stellen sich immer oefter die Fragen, wo, zu welchem Zweck und wie man ein Entkopplungsfilter richtig einsetzt? Die Verfasser diskutieren diese und andere Fragen rund um PLC-Anwendungen und den Einsatz von Entkopplungsfiltern. (orig.)

  7. Experimentally freezing quantum discord in a dephasing environment using dynamical decoupling

    Science.gov (United States)

    Singh, Harpreet; Arvind; Dorai, Kavita

    2017-06-01

    The discovery of the intriguing phenomenon that certain kinds of quantum correlations remain impervious to noise up to a specific point in time and then suddenly decay, has generated immense recent interest. We exploit dynamical decoupling sequences to prolong the persistence of time-invariant quantum correlations in a system of two NMR qubits decohering in independent dephasing environments. We experimentally prepare two-qubit Bell-diagonal quantum states that interact with individual noise channels and demonstrate that we are able to freeze quantum correlations over long time scales via dynamical decoupling. Our results have important implications for experimental quantum control and for quantum information processing protocols.

  8. Multiple estimation channel decoupling and optimization method based on inverse system

    Science.gov (United States)

    Wu, Peng; Mu, Rongjun; Zhang, Xin; Deng, Yanpeng

    2018-03-01

    This paper addressed the intelligent autonomous navigation request of intelligent deformation missile, based on the intelligent deformation missile dynamics and kinematics modeling, navigation subsystem solution method and error modeling, and then focuses on the corresponding data fusion and decision fusion technology, decouples the sensitive channel of the filter input through the inverse system of design dynamics to reduce the influence of sudden change of the measurement information on the filter input. Then carrying out a series of simulation experiments, which verified the feasibility of the inverse system decoupling algorithm effectiveness.

  9. Feedforward Control Strategy for the state-decoupling Stand-alone UPS with LC output filter

    DEFF Research Database (Denmark)

    Lu, Jinghang; Savaghebi, Mehdi; Guerrero, Josep M.

    2017-01-01

    In this paper, the disturbance rejection performance of the cascaded control strategy for UPS system is investigated. The comparison of closed loop system performance between conventional cascaded control (CCC) strategy and state-decoupling cascaded control (SDCC) strategy are further explored....... In order to further increase the load current disturbance rejection capability of the state-decoupling in UPS system, a feedforward control strategy is proposed. In addition, the design principle for the current and voltage regulators are discussed. Simulation and experimental results are provided...

  10. A low capacitance single-phase AC-DC converter with inherent power ripple decoupling

    OpenAIRE

    Gottardo, Davide; De Lillo, Liliana; Empringham, Lee; Costabeber, Alessando

    2016-01-01

    This paper proposes a new single-phase AC-DC conversion topology with inherent power ripple decoupling, based on the combination of a PWM H-bridge inverter, an AC side LC filter and a ZVS line commutated H-bridge. A capacitor on the AC side is used as power decoupling element. By appropriate selection of the capacitor voltage, the power ripple at twice the AC frequency can be cancelled from the DC side instantaneous power, achieving negligible DC voltage ripple using a smaller total capacitan...

  11. Viscous decoupling transitions for individually dragged particles in systems with quenched disorder.

    Science.gov (United States)

    Olson Reichhardt, C J; Reichhardt, C

    2008-07-01

    We show that when an individual particle is dragged through an assembly of other particles in the presence of quenched disorder, a viscous decoupling transition occurs between the dragged particle and the surrounding particles which is controlled by the quenched disorder. A counterintuitive consequence of this transition is that the velocity of the dragged particle can be increased by increasing the strength or density of the quenched disorder. The decoupling transition can also occur when the external drive on the dragged particle is increased and is observable as a clear signature in the velocity-force response.

  12. Use of UPFC device controlled by fuzzy logic controllers for decoupled power flow control

    Directory of Open Access Journals (Sweden)

    Ivković Sanja

    2014-01-01

    Full Text Available This paper investigates the possibility of decoupled active and reactive power flow control in a power system using a UPFC device controlled by fuzzy logic controllers. A Brief theoretical review of the operation principles and applications of UPFC devices and design principles of the fuzzy logic controller used are given. A Matlab/Simulink model of the system with UPFC, the fuzzy controller setup, and graphs of the results are presented. Conclusions are drawn regarding the possibility of using this system for decoupled control of the power flow in power systems based on analysis of these graphs.

  13. Getting to one from title 10 + title 32 unity of effort in the homeland

    OpenAIRE

    Prosch, Caroline Ross.

    2011-01-01

    CHDS State/Local Approved for public release; distribution is unlimited This thesis bridges the knowledge gap between Title 10 Active Duty and Title 32 National Guard in order to breakdown cultural barriers and reach unity of effort for response operations in the homeland. Regrettably, a unified response was missing among Title 10 Active Duty and Title 32 National Guard members following Hurricane Katrina. Since then, initiatives based in doctrine, statutes and formal recommendations...

  14. 24 CFR 3500.16 - Title companies.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Title companies. 3500.16 Section 3500.16 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued... DEVELOPMENT REAL ESTATE SETTLEMENT PROCEDURES ACT § 3500.16 Title companies. No seller of property that will...

  15. 31 CFR 505.01 - Short title.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Short title. 505.01 Section 505.01 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN... CERTAIN MERCHANDISE BETWEEN FOREIGN COUNTRIES § 505.01 Short title. The regulations in this part may be...

  16. 33 CFR 401.1 - Short title.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Short title. 401.1 Section 401.1 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations § 401.1 Short title. These regulations may be cited as the...

  17. 18 CFR 415.1 - Short title.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 2 2010-04-01 2010-04-01 false Short title. 415.1 Section 415.1 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION ADMINISTRATIVE MANUAL BASIN REGULATIONS-FLOOD PLAIN REGULATIONS Generally § 415.1 Short title. This part shall be known...

  18. 76 FR 60593 - Title VI; Proposed Circular

    Science.gov (United States)

    2011-09-29

    ... recommends. In addition, we propose changing the format to make this Circular consistent with the style of... cross-referencing information related to Title VI that FTA and FHWA jointly assess and evaluate during... Title VI reporting requirements for each of these roles. We also propose cross-referencing information...

  19. Informational Dynamics of Journal Article Titles.

    Science.gov (United States)

    Diener, Richard A. V.

    1984-01-01

    Analyzes changing information values of journal article titles (measured by counting total number of words, number of keywords, and computing proportion of substantive words). Use of linear regression to determine change patterns for sample of titles from four selected journals, six library journals, and six miscellaneous journals (1951-1980) is…

  20. Grant Administration Manual for Title III Coordinators.

    Science.gov (United States)

    Mathis, Emily Duncan; Ashmore, Frances W.

    Guidelines for coordinators of programs under Title III of the Higher Education Act of 1965 are presented, based on a national survey of Title III program coordinators. The responsibilities of the coordinator and information on administering the Strengthening Developing Institutions Program (SDIP) grant are covered. The program can either be a…

  1. Student Achievement in Title I Schools

    Science.gov (United States)

    Diaz, Abby T.

    2017-01-01

    This researcher seeks to answer the following question: How did two elementary Title I schools, identified as "high performing" on the first Smarter Balanced assessment, address elements of Maslow's hierarchy of needs when developing school-wide initiatives to enhance student achievement? Many students in Title I schools face barriers to…

  2. 24 CFR 202.11 - Title I.

    Science.gov (United States)

    2010-04-01

    ... in 24 CFR 25.5. Civil money penalties may be imposed against Title I lenders and mortgagees pursuant... unacceptable risk to the Department; or (iv) Transfer of a Title I loan to a party that does not have a valid...

  3. Fault Ride-through Capability Implementation in Wind Turbine Converters Using a Decoupled Double Synchronous Reference Frame PLL

    DEFF Research Database (Denmark)

    Rodriguez, Pedro; Alloza, Alvaro Luna; Teodorescu, Remus

    2007-01-01

    This work exploits the Decoupled Double Synchronous Reference Frame PLL (DDSRF-PLL) as an effective method for grid synchronization of WT's power converters in the presence of transient faults in the grid. The DDSRF-PLL uses a dual synchronous reference frame and a decoupling network to effective...

  4. A Comparison of Methods for Decoupling Tongue and Lower Lip from Jaw Movements in 3D Articulography

    Science.gov (United States)

    Henriques, Rafael Neto; van Lieshout, Pascal

    2013-01-01

    Purpose: One popular method to study the motion of oral articulators is 3D electromagnetic articulography. For many studies, it is important to use an algorithm to decouple the motion of the tongue and the lower lip from the motion of the mandible. In this article, the authors describe and compare 4 methods for decoupling jaw motion by using 3D…

  5. Discontinuous PWM Modulation Strategy with Circuit-Level Decoupling Concept of Three-Level Neutral-Point Clamped (NPC) Inverter

    DEFF Research Database (Denmark)

    Zhang, Zhe; Thomsen, Ole Cornelius; Andersen, Michael A. E.

    2013-01-01

    inverters, but also reduces the switching loss of the inverter along with an inherent neutral point (NP) voltage control. Based on a circuit-level decoupling concept, the NPC inverter can be decoupled into two three-level Buck converters in every defined operating section, and thereby the controller design...

  6. The Circuit-Level Decoupling Modulation Strategy for Three-Level Neutral-Point-Clamped (TL-NPC) Inverter

    DEFF Research Database (Denmark)

    Zhang, Zhe; Thomsen, Ole Cornelius; Andersen, Michael A. E.

    2011-01-01

    In this paper, a circuit-level decoupling modulation strategy is proposed for the three-level (TL) neutral-point-clamped (NPC) inverters. With the proposed modulation scheme, the TL-NPC inverter can be decoupled into two three-level Buck converters in each defined operating section, which makes...

  7. Compactness of the difference between the porous thermoelastic semigroup and its decoupled semigroup

    Directory of Open Access Journals (Sweden)

    El Mustapha Ait Benhassi

    2015-06-01

    Full Text Available Under suitable assumptions, we prove the compactness of the difference between the porous thermoelastic semigroup and its decoupled one. This will be achieved by proving the norm continuity of this difference and the compactness of the difference between the resolvents of their generators. Applications to porous thermoelastic systems are given.

  8. Pulse sequences for dynamical decoupling in an optical lattice broadened by temporal frequency drift

    Science.gov (United States)

    Paul, Christopher R.; Zhuang, Chao; Cruz, Luciano S.; Maneshi, Samansa; Steinberg, Aephraim M.

    2009-05-01

    Despite the very long internal coherence time, transverse drift through an inhomogeneously broadened lattice leads to a rapid decay of a pulse-echo signal. We use higher-order echoes, or dynamical decoupling, to probe and subsequently eliminate the effects of this drift. We study the optimal structure of these pulse sequences for simultaneously canceling out different orders of the effect.

  9. The AUSTRON-target: the neutron flux of decoupled and poisoned moderators

    International Nuclear Information System (INIS)

    Muhrer, G.; Ninaus, W.; Schachinger, E.

    1995-01-01

    This paper discusses in some detail the time resolution of the thermal neutron flux pulse generated by decoupled, poisoned, ambient temperature water moderators in a flat target configured spallation source. The influence of the reflector material on the time resolution of the neutron pulse is also investigated. (author) 5 figs., 3 refs

  10. Nonlinear Decoupling of Torque and Field Amplitude in an Induction Motor

    DEFF Research Database (Denmark)

    Rasmussen, Henrik; Vadstrup, P.; Børsting, H.

    1997-01-01

    A novel approach to control of induction motors, based on nonlinear state feedback, is presented. The resulting scheme gives a linearized input-output decoupling of the torque and the amplitude of the field. The proposed approach is used to design controllers for the field amplitude and the motor...... torque. The method is tested both by simulation and by experiments on a motor drive....

  11. Optimal pulse spacing for dynamical decoupling in the presence of a purely dephasing spin bath

    International Nuclear Information System (INIS)

    Ajoy, Ashok; Alvarez, Gonzalo A.; Suter, Dieter

    2011-01-01

    Maintaining quantum coherence is a crucial requirement for quantum computation; hence protecting quantum systems against their irreversible corruption due to environmental noise is an important open problem. Dynamical decoupling (DD) is an effective method for reducing decoherence with a low control overhead. It also plays an important role in quantum metrology, where, for instance, it is employed in multiparameter estimation. While a sequence of equidistant control pulses [the Carr-Purcell-Meiboom-Gill (CPMG) sequence] has been ubiquitously used for decoupling, Uhrig recently proposed that a nonequidistant pulse sequence [the Uhrig dynamic decoupling (UDD) sequence] may enhance DD performance, especially for systems where the spectral density of the environment has a sharp frequency cutoff. On the other hand, equidistant sequences outperform UDD for soft cutoffs. The relative advantage provided by UDD for intermediate regimes is not clear. In this paper, we analyze the relative DD performance in this regime experimentally, using solid-state nuclear magnetic resonance. Our system qubits are 13 C nuclear spins and the environment consists of a 1 H nuclear spin bath whose spectral density is close to a normal (Gaussian) distribution. We find that in the presence of such a bath, the CPMG sequence outperforms the UDD sequence. An analogy between dynamical decoupling and interference effects in optics provides an intuitive explanation as to why the CPMG sequence performs better than any nonequidistant DD sequence in the presence of this kind of environmental noise.

  12. How decoupled is the Single Farm Payment and does it matter for international trade?

    DEFF Research Database (Denmark)

    Urban, Kirsten; Jensen, Hans Grinsted; Brockmeier, Martina

    2016-01-01

    a comprehensive representation of domestic support. By considering and modeling a range of different assumptions regarding the SFP’s degree of decoupling, we investigate the SFP’s effect on the model’s results. The results of our analysis reveal substantially different effects that depend on the degree...

  13. Analysis of underwater decoupling properties of a locally resonant acoustic metamaterial coating

    International Nuclear Information System (INIS)

    Huang Ling-Zhi; Xiao Yong; Wen Ji-Hong; Yang Hai-Bin; Wen Xi-Sen

    2016-01-01

    This paper presents a semi-analytical solution for the vibration and sound radiation of a semi-infinite plate covered by a decoupling layer consisting of locally resonant acoustic metamaterial. Formulations are derived based on a combination use of effective medium theory and the theory of elasticity for the decoupling material. Theoretical results show good agreements between the method developed in this paper and the conventional finite element method (FEM), but the method of this paper is more efficient than FEM. Numerical results also show that system with acoustic metamaterial decoupling layer exhibits significant noise reduction performance at the local resonance frequency of the acoustic metamaterial, and such performance can be ascribed to the vibration suppression of the base plate. It is demonstrated that the effective density of acoustic metamaterial decoupling layer has a great influence on the mechanical impedance of the system. Furthermore, the resonance frequency of locally resonant structure can be effectively predicted by a simple model, and it can be significantly affected by the material properties of the locally resonant structure. (paper)

  14. Perancangan dan Implementasi Kontroler PID dengan Nonlinear Decoupling pada Sistem Kendali UAV Quadcopter

    Directory of Open Access Journals (Sweden)

    Muhammad Jadid Anggarjito

    2013-09-01

    Full Text Available Quadcopter merupakan salah salah satu jenis rotorcraft yang memiliki 4 buah rotor yang harus dikendalikan masing-masing rotornya untuk dapat menggerakkan quadcopter. Gerak lateral merupakan gerak quadcopter secara horizontal pada ketinggian atau gerak translasi, gerakan ini sangat vital untuk memenuhi kebutuhan quadcopter dalam mencapai way-to-way point yang telah ditentukan. Pada tugas akhir ini untuk mengatur gerakan lateral dari quadcopter digunakan sistem kendali PID dengan Decoupling Nonlinear. Ada 2 buah kontroler individual yang digunakan yaitu kontroler PID dengan Nonlinear Decoupling untuk mengatur pitch dan roll gerak rotasi, serta kontroler PD untuk mengatur translasi sumbu X dan sumbu Y. Perancangan sistem kontrol PID Decoupling Nonlinear pada simulasi yang digunakan untuk mempertahankan gerak lateral quadcopter dalam mencapai way-to-way point yang ditentukan. Nilai parameter yang didapatkan dari hasil tuning terstruktur pada simulasi adalah pada kontroler PID dengan Nonlinear Decoupling pitch dan roll Kp=5 Ki=0,01 Kd=10 sedangkan pada kontroler PD sumbu X dan sumbu Y Kp=0,05 Kd=0,2. Respon hasil implementasi pada quadcopter belum sesuai pada hasil simulasi. Pada hasil simulasi masih terdapat koreksi pada translasi sumbu X dan sumbu Y masih terdapat kesalahan sebesar ± 0,02 cm, sedangkan pada implementasi gerak lateral menggunakan remote control sistem dapat bergerak stabil menuju way-to-way point yang ditentukan.

  15. Voltage Management in Unbalanced Low Voltage Networks Using a Decoupled Phase-Tap-Changer Transformer

    DEFF Research Database (Denmark)

    Coppo, Massimiliano; Turri, Roberto; Marinelli, Mattia

    2014-01-01

    The paper studies a medium voltage-low voltage transformer with a decoupled on load tap changer capability on each phase. The overall objective is the evaluation of the potential benefits on a low voltage network of such possibility. A realistic Danish low voltage network is used for the analysis...

  16. Structural Decoupling between the VET and the Employment Systems: Challenges Manifested in Assessment of Practical Training

    Science.gov (United States)

    Umarik, Meril; Loogma, Krista; Hinno, Krista

    2010-01-01

    This article aims to analyse how structural decoupling, which is an especially relevant problem for school-based vocational education and training (VET) systems, reveals itself in the assessment of practical training. Niklas Luhmann's social system theory has been applied to the analysis of assessment practices as a communication act between the…

  17. Resonances in molecular collisions: Importance of mode decoupling in the exit channel of attractive potentials

    International Nuclear Information System (INIS)

    Kulander, K.C.

    1983-01-01

    Two model, collinear triatomic systems are investigated in which the intrafragment vibrational modes are decoupled from the interfragment bond distance in the dissociation channel. Resonances are found in both systems whose amplitudes are predominately outside the interaction region. The consequences of the existence of such resonances on reaction probabilities, dissociation rates, and absorption properties of states near the dissociation limit are discussed

  18. Decoupling Principle Analysis and Development of a Parallel Three-Dimensional Force Sensor.

    Science.gov (United States)

    Zhao, Yanzhi; Jiao, Leihao; Weng, Dacheng; Zhang, Dan; Zheng, Rencheng

    2016-09-15

    In the development of the multi-dimensional force sensor, dimension coupling is the ubiquitous factor restricting the improvement of the measurement accuracy. To effectively reduce the influence of dimension coupling on the parallel multi-dimensional force sensor, a novel parallel three-dimensional force sensor is proposed using a mechanical decoupling principle, and the influence of the friction on dimension coupling is effectively reduced by making the friction rolling instead of sliding friction. In this paper, the mathematical model is established by combining with the structure model of the parallel three-dimensional force sensor, and the modeling and analysis of mechanical decoupling are carried out. The coupling degree (ε) of the designed sensor is defined and calculated, and the calculation results show that the mechanical decoupling parallel structure of the sensor possesses good decoupling performance. A prototype of the parallel three-dimensional force sensor was developed, and FEM analysis was carried out. The load calibration and data acquisition experiment system are built, and then calibration experiments were done. According to the calibration experiments, the measurement accuracy is less than 2.86% and the coupling accuracy is less than 3.02%. The experimental results show that the sensor system possesses high measuring accuracy, which provides a basis for the applied research of the parallel multi-dimensional force sensor.

  19. Means-ends decoupling and academic identities in Ukrainian university after the Revolution of Dignity

    NARCIS (Netherlands)

    Hladchenko, Myroslava; Westerheijden, Don F.

    2017-01-01

    This article aims to explore the academic identities under the conditions of means-ends decoupling at the nation-state level. For empirical evidence we choose Ukraine. In 2014, after the Revolution of Dignity despite the adoption of the policies aimed to construct academic identities like in the

  20. A disturbance decoupling nonlinear control law for variable speed wind turbines

    DEFF Research Database (Denmark)

    Thomsen, Sven Creutz; Poulsen, Niels Kjølstad

    2007-01-01

    This paper describes a nonlinear control law for controlling variable speed wind turbines using feedback linearization. The novel aspect of the control law is its ability to decouple the effect of wind fluctuations. Furthermore, the transformation to feedback linearizable coordinates is chosen...

  1. Decoupled equations for reverse time migration in tilted transversely isotropic media

    KAUST Repository

    Zhan, Ge

    2012-03-01

    Conventional modeling and migration for tilted transversely isotropic (TTI) media may suffer from numerical instabilities and shear wave artifacts due to the coupling of the P-wave and SV-wave modes in the TTI coupled equations. Starting with the separated P- and SV-phase velocity expressions for vertical transversely isotropic (VTI) media, we extend these decoupled equations for modeling and reverse time migration (RTM) in acoustic TTI media. Compared with the TTI coupled equations published in the geophysical literature, the new TTI decoupled equations provide a more stable solution due to the complete separation of the P-wave and SV-wave modes. The pseudospectral method is the most convenient method to implement these equations due to the form of wavenumber expressions and has the added benefit of being highly accurate and thus avoiding numerical dispersion. The rapid expansion method (REM) in time is employed to produce a broad band numerically stable time evolution of the wavefields. Synthetic results validate the proposed TTI decoupled equations and show that modeling and RTM in TTI media with the decoupled equations remain numerically stable even for models with strong anisotropy and sharp contrasts. © 2012 Society of Exploration Geophysicists.

  2. Means-Ends Decoupling and Academic Identities in Ukrainian University after the Revolution of Dignity

    Science.gov (United States)

    Hladchenko, Myroslava; Westerheijden, Don F.

    2018-01-01

    This article aims to explore the academic identities under the conditions of means-ends decoupling at the nation-state level. For empirical evidence we choose Ukraine. In 2014, after the Revolution of Dignity despite the adoption of the policies aimed to construct academic identities like in the Western universities the intended outcomes were not…

  3. Practical aspects of 13C surface receive coils with active decoupling and tuning circuit

    DEFF Research Database (Denmark)

    Nilsson, Daniel; Mohr, Johan Jacob; Zhurbenko, Vitaliy

    2012-01-01

    is based on application-specified coil profile and includes impedance matching and balancing circuits. Active decoupling is implemented in order to minimize the influence of the receiving coil on the homogeneity of the transmit-coil field. Measurement results for a coil prototype are presented, including...... imaging experiments and estimation of the signal-to-noise ratio....

  4. Utilization of Spent Resources in Support of Eco-Economic Decoupling in Central Java

    Directory of Open Access Journals (Sweden)

    Nuril Fikri Aulia

    2015-09-01

    Full Text Available Implementation of the development is often cause adverse environmental impacts. Adverse effects are environmental degradation and decreasing availability of resources. To overcome this, it is necessary that the development can still continue, the environment is not damaged, and the availability of resources is maintained. One effort is through eco - economic decoupling activities with the use of spent resources. The aim of study to determine the potential of spent resources in Central Java, knows the problems in the utilization of spent resources in Central Java, and to determine the impact of the utilization of spent resources in Central Java by a qualitative descriptive method. The results show that in the study have the potential of eco-economic decoupling indicated by the availability of spent resources and had done utilization of spent resources. However, this potential has not been optimally developed, because there are still some problems in its utilization. Problems in the use of spent resources are the lack of knowledge about eco-economic decoupling and spent resources among stakeholder, there is no specific policy on eco - economic decoupling, the lack of Local Government 's role in the utilization of spent resource, and the lack of synergy programs and activities in supporting the utilization of spent resources. Utilization of spent resources have positive impact to reduce pressure on the environment and natural resources, create a new job, and increase incomes for society.

  5. Decomposition and Decoupling Analysis of Energy-Related Carbon Emissions from China Manufacturing

    Directory of Open Access Journals (Sweden)

    Qingchun Liu

    2015-01-01

    Full Text Available The energy-related carbon emissions of China’s manufacturing increased rapidly, from 36988.97 × 104 tC in 1996 to 74923.45 × 104 tC in 2012. To explore the factors to the change of the energy-related carbon emissions from manufacturing sector and the decoupling relationship between energy-related carbon emissions and economic growth, the empirical research was carried out based on the LMDI method and Tapio decoupling model. We found that the production scale contributed the most to the increase of the total carbon emissions, while the energy intensity was the most inhibiting factor. And the effects of the intrastructure and fuel mix on the change of carbon emissions were relatively weak. At a disaggregative level within manufacturing sector, EI subsector had a greater impact on the change of the total carbon emissions, with much more potentiality of energy conservation and emission reduction. Weak decoupling of manufacturing sector carbon emissions from GDP could be observed in the manufacturing sector and EI subsector, while strong decoupling state appeared in NEI subsector. Several advices were put forward, such as adjusting the fuel structure and optimizing the intrastructure and continuing to improve the energy intensity to realize the manufacturing sustainable development in low carbon pattern.

  6. Decoupling limit and throat geometry of non-susy D3 brane

    Energy Technology Data Exchange (ETDEWEB)

    Nayek, Kuntal, E-mail: kuntal.nayek@saha.ac.in; Roy, Shibaji, E-mail: shibaji.roy@saha.ac.in

    2017-03-10

    Recently it has been shown by us that, like BPS Dp branes, bulk gravity gets decoupled from the brane even for the non-susy Dp branes of type II string theories indicating a possible extension of AdS/CFT correspondence for the non-supersymmetric case. In that work, the decoupling of gravity on the non-susy Dp branes has been shown numerically for the general case as well as analytically for some special case. Here we discuss the decoupling limit and the throat geometry of the non-susy D3 brane when the charge associated with the brane is very large. We show that in the decoupling limit the throat geometry of the non-susy D3 brane, under appropriate coordinate change, reduces to the Constable–Myers solution and thus confirming that this solution is indeed the holographic dual of a (non-gravitational) gauge theory discussed there. We also show that when one of the parameters of the solution takes a specific value, it reduces, under another coordinate change, to the five-dimensional solution obtained by Csaki and Reece, again confirming its gauge theory interpretation.

  7. Small-signal model of a decoupled double synchronous reference frame current controller

    DEFF Research Database (Denmark)

    Dowlatabadi, Mohammadkazem Bakhshizadeh; Hjerrild, Jester; Kocewiak, Lukasz

    2016-01-01

    the dq signals are not dc anymore, and therefore, linearization cannot be done. In this paper a Decoupled Double Synchronous Frame PLL is used to eliminate the oscillations in the dq frame signals. The small signal model of this PLL including an unbalanced current controller is presented in this paper....

  8. Randomized dynamical decoupling strategies and improved one-way key rates for quantum cryptography

    International Nuclear Information System (INIS)

    Kern, Oliver

    2009-01-01

    The present thesis deals with various methods of quantum error correction. It is divided into two parts. In the first part, dynamical decoupling methods are considered which have the task of suppressing the influence of residual imperfections in a quantum memory. Such imperfections might be given by couplings between the finite dimensional quantum systems (qudits) constituting the quantum memory, for instance. The suppression is achieved by altering the dynamics of an imperfect quantum memory with the help of a sequence of local unitary operations applied to the qudits. Whereas up to now the operations of such decoupling sequences have been constructed in a deterministic fashion, strategies are developed in this thesis which construct the operations by random selection from a suitable set. Formulas are derived which estimate the average performance of such strategies. As it turns out, randomized decoupling strategies offer advantages and disadvantages over deterministic ones. It is possible to benefit from the advantages of both kind of strategies by designing combined strategies. Furthermore, it is investigated if and how the discussed decoupling strategies can be employed to protect a quantum computation running on the quantum memory. It is shown that a purely randomized decoupling strategy may be used by applying the decoupling operations and adjusted gates of the quantum algorithm in an alternating fashion. Again this method can be enhanced by the means of deterministic methods in order to obtain a combined decoupling method for quantum computations analogously to the combining strategies for quantum memories. The second part of the thesis deals with quantum error-correcting codes and protocols for quantum key distribution. The focus is on the BB84 and the 6-state protocol making use of only one-way communication during the error correction and privacy amplification steps. It is shown that by adding additional errors to the preliminary key (a process called

  9. Randomized dynamical decoupling strategies and improved one-way key rates for quantum cryptography

    Energy Technology Data Exchange (ETDEWEB)

    Kern, Oliver

    2009-05-25

    The present thesis deals with various methods of quantum error correction. It is divided into two parts. In the first part, dynamical decoupling methods are considered which have the task of suppressing the influence of residual imperfections in a quantum memory. Such imperfections might be given by couplings between the finite dimensional quantum systems (qudits) constituting the quantum memory, for instance. The suppression is achieved by altering the dynamics of an imperfect quantum memory with the help of a sequence of local unitary operations applied to the qudits. Whereas up to now the operations of such decoupling sequences have been constructed in a deterministic fashion, strategies are developed in this thesis which construct the operations by random selection from a suitable set. Formulas are derived which estimate the average performance of such strategies. As it turns out, randomized decoupling strategies offer advantages and disadvantages over deterministic ones. It is possible to benefit from the advantages of both kind of strategies by designing combined strategies. Furthermore, it is investigated if and how the discussed decoupling strategies can be employed to protect a quantum computation running on the quantum memory. It is shown that a purely randomized decoupling strategy may be used by applying the decoupling operations and adjusted gates of the quantum algorithm in an alternating fashion. Again this method can be enhanced by the means of deterministic methods in order to obtain a combined decoupling method for quantum computations analogously to the combining strategies for quantum memories. The second part of the thesis deals with quantum error-correcting codes and protocols for quantum key distribution. The focus is on the BB84 and the 6-state protocol making use of only one-way communication during the error correction and privacy amplification steps. It is shown that by adding additional errors to the preliminary key (a process called

  10. Reverse-time Migration in Tilted Transversely Isotropic Media with Decoupled Equations

    KAUST Repository

    Zhan, Ge

    2012-12-01

    Conventional modeling and migration for tilted transversely isotropic (TTI) media may suffer from numerical instabilities and shear wave artifacts due to the coupling of the P-wave and SV-wave modes in the TTI coupled equations. Starting with the separated P- and SV-phase velocity expressions for vertical transversely isotropic (VTI) media, I extend these decoupled equations for modeling and reverse-time migration (RTM) in acoustic TTI media. Compared with the TTI coupled equations published in the geophysical literature, the new TTI decoupled equations provide a more stable solution due to the complete separation of the P-wave and SV-wave modes. The pseudospectral (PS) method is the most convenient method to implement these equations due to the form of wavenumber expressions and has the added benefit of being highly accurate and thus avoiding numerical dispersion. The rapid expansion method (REM) in time is employed to produce a broad band numerically stable time evolution of the wavefields. Synthetic results validate the proposed TTI decoupled equations and show that modeling and RTM in TTI media with the decoupled P-wave equation remain numerically stable even for models with strong anisotropy and sharp contrasts. The most desirable feature of the TTI decoupled P-wave equation is that it is absolutely free of shear-wave artifacts and the consequent alleviation of numerical instabilities generally suffered by some systems of coupled equations. However, due to several forward-backward Fourier transforms in wavefield extrapolation at each time step, the computational cost is also high, and thereby hampers its prevalence. I hereby propose to use a hybrid pseudospectral and finite-difference (FD) scheme to solve the TTI decoupled P-wave equation. In the hybrid solution, most of the cost-consuming wavenumber terms in the equation are replaced by inexpensive FD operators, which in turn accelerates the computation and reduces the computational cost. To demonstrate the

  11. Moving Low-Carbon Construction Industry in Jiangsu Province: Evidence from Decomposition and Decoupling Models

    Directory of Open Access Journals (Sweden)

    Rongrong Li

    2017-06-01

    Full Text Available The carbon dioxide (CO2 emissions caused by the global construction industry account for 36% of the world’s total carbon emissions, and 50% of China’s total carbon emissions. The carbon emissions from Jiangsu Province’s construction industry account for approximately 16% of the total emissions of the Chinese construction industry. Taking the construction industry in Jiangsu Province as our study object, therefore, this paper introduces the Intergovernmental Panel on Climate Change (IPCC carbon emission accounting method as a means to measure the total CO2 emissions of the Jiangsu Province construction industry. Specifically, we examine the period from 2005 to 2013. Based on the Tapio decoupling model, we analyze the decoupling state between the CO2 emissions of the construction industry in Jiangsu Province and the province’s economic growth. Our paper also employs the Logarithmic Mean Divisia Index (LMDI approach, in order to conduct a decomposition analysis of those factors that influenced the changes in the level of CO2 emissions during the studied period. According to the results of our research, during the period from 2005 to 2013, the CO2 emission levels caused by the construction industry in Jiangsu Province experienced a significant increase. The cumulative total CO2 emissions reached 402.85 million tons. During most of the years covered by our study, an expansive negative decoupling state existed between the level of CO2 emissions and the output value of Jiangsu’s construction industry. These periods were interspersed with either a weak decoupling state in some years or a strong decoupling state in other years. The indirect carbon emission intensity effect and the industry scale effect were the main factors influencing the increases in the construction industry’s CO2 emissions. At the conclusion of our paper, we put forward policy suggestions, with the objective of promoting the de-carbonization of the construction industry

  12. INIS: Authority list for journal titles

    International Nuclear Information System (INIS)

    2006-01-01

    This is the 32nd revision of the INIS: Authority List for Journal Titles (IAEA-INIS-11). This list is published annually and includes the titles of all journals which have contained articles submitted to INIS at the time of publication. The current list contains 13,231 journal titles, 2,125 regularly scanned journals and 555 key journals. It was last updated in February 2006. The purpose of this report is to provide descriptive cataloguers with a standard entry for the full title of a journal. In addition to the full journal title, the ISSN (International Standard Serial Number), administered by the ISSN International Centre, Paris, France, and/or CODEN, assigned by Chemical Abstracts Service, USA, are given in this manual. In order to help the user find titles easily, the list is arranged in six parts, followed by summary statistics: In Part I, all key journals are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. In Part II, all key journals are sorted alphabetically under their title. The name of the country or international organization responsible for their input in INIS is entered in parentheses within the body of the entry. In Part III, all journals that are regularly scanned by INIS Centres are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. In Part IV, all journals that are regularly scanned by INIS Centres are sorted alphabetically under their title. The name of the country or international organization responsible for their input in INIS is entered in parentheses within the body of the entry. In Part V, all journals are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. In Part VI, all journals are sorted alphabetically under their title. The name of the

  13. INIS: Authority list for journal titles

    International Nuclear Information System (INIS)

    2005-01-01

    This is the 31st revision of the INIS: Authority List for Journal Titles (IAEA-INIS-11). This list is published annually and includes the titles of all journals which have contained articles submitted to INIS at the time of publication. The current list contains 13,104 journal titles, 2,078 regularly scanned journals and 561 key journals. It was last updated in February 2005. The purpose of this report is to provide descriptive cataloguers with a standard entry for the full title of a journal. In addition to the full journal title, the ISSN (International Standard Serial Number), administered by the ISSN International Centre, Paris, France, and/or CODEN, assigned by Chemical Abstracts Service, USA, are given in this manual. In order to help the user find titles easily, the list is arranged in six parts, followed by summary statistics: In Part I, all key journals are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. In Part II, all key journals are sorted alphabetically under their title. The name of the country or international organization responsible for their input in INIS is entered in parentheses within the body of the entry. In Part III, all journals that are regularly scanned by INIS Centers are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. In Part IV, all journals that are regularly scanned by INIS Centers are sorted alphabetically under their title. The name of the country or international organization responsible for their input in INIS is entered in parentheses within the body of the entry. In Part V, all journals are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. In Part VI, all journals are sorted alphabetically under their title. The name of the

  14. Code of Federal Regulations Title 21

    Data.gov (United States)

    U.S. Department of Health & Human Services — This database contains the most recent revision from the Government Printing Office (GPO) of the Code of Federal Regulations (CFR) Title 21 - Food and Drugs.

  15. Service Locator - Family Planning Title X

    Data.gov (United States)

    U.S. Department of Health & Human Services — This locator tool will help you find Title X family planning centers that provide high quality and cost-effective family planning and related preventive health...

  16. A robust static decoupling algorithm for 3-axis force sensors based on coupling error model and ε-SVR.

    Science.gov (United States)

    Ma, Junqing; Song, Aiguo; Xiao, Jing

    2012-10-29

    Coupling errors are major threats to the accuracy of 3-axis force sensors. Design of decoupling algorithms is a challenging topic due to the uncertainty of coupling errors. The conventional nonlinear decoupling algorithms by a standard Neural Network (NN) are sometimes unstable due to overfitting. In order to avoid overfitting and minimize the negative effect of random noises and gross errors in calibration data, we propose a novel nonlinear static decoupling algorithm based on the establishment of a coupling error model. Instead of regarding the whole system as a black box in conventional algorithm, the coupling error model is designed by the principle of coupling errors, in which the nonlinear relationships between forces and coupling errors in each dimension are calculated separately. Six separate Support Vector Regressions (SVRs) are employed for their ability to perform adaptive, nonlinear data fitting. The decoupling performance of the proposed algorithm is compared with the conventional method by utilizing obtained data from the static calibration experiment of a 3-axis force sensor. Experimental results show that the proposed decoupling algorithm gives more robust performance with high efficiency and decoupling accuracy, and can thus be potentially applied to the decoupling application of 3-axis force sensors.

  17. How property title impacts urban consolidation

    DEFF Research Database (Denmark)

    Easthope, Hazel; Warnken, Jan; Sherry, Cathy

    2014-01-01

    Continuing urbanisation is triggering an increase in multi-titled housing internationally. This trend has given rise to a substantial research interest in the social consequences of higher density living. Little enquiry, however, has been directed to examining how property title subdivisions gene...... society institutions. The paper calls for a more explicit recognition of these tensions by academics, policy-makers, practitioners and the broader community....

  18. Translation-rotation decoupling of tracers of locally favorable structures in glass-forming liquids

    Science.gov (United States)

    Park, Yoonjae; Kim, Jeongmin; Sung, Bong June

    2017-09-01

    Particles in glass-forming liquids may form domains of locally favorable structures (LFSs) upon supercooling. Whether and how the LFS domains would relate to the slow relaxation of the glass-forming liquids have been issues of interest. In this study, we employ tracers of which structures resemble the LFS domains in Wahnström and Kob-Andersen (KA) glass-forming liquids and investigate the translation-rotation decoupling of the tracers. We find that the tracer structure affects how the translation and the rotation of tracers decouple and that information on the local mobility around the LFS domains may be gleaned from the tracer dynamics. According to the Stokes-Einstein relation and the Debye-Stokes-Einstein relation, the ratio of the translational (DT) and rotational (DR) diffusion coefficients is expected to be a constant over a range of T /η , where η and T denote the medium viscosity and temperature, respectively. In supercooled liquids and glasses, however, DT and DR decouple due to dynamic heterogeneity, thus DT/DR not being constant any more. In Wahnström glass-forming liquids, icosahedron LFS domains are the most long-lived ones and the mobility of neighbor particles around the icosahedron LFS domain is suppressed. We find from our simulations that the icosahedron tracers, similar in size and shape to the icosahedron LFS domains, experience drastic translation-rotation decoupling upon cooling. The local mobility of liquid particles around the icosahedron tracers is also suppressed significantly. On the other hand, tracers of FCC and HCP structures do not show translation-rotation decoupling in the Wahnström liquid. In KA glass-forming liquids, bicapped square antiprism LFS domains are the most long-lived LFS domains but are not correlated significantly with the local mobility. We find from our simulations that DT and DR of bicapped square antiprism tracers, also similar in size and shape to the bicapped square antiprism LFS domains, do not decouple

  19. Titles change the aesthetic appreciations of paintings

    Directory of Open Access Journals (Sweden)

    Gernot eGerger

    2015-08-01

    Full Text Available Aesthetic experiences of artworks are influenced by contextualizing information such as titles. However, how titles contribute to positive aesthetic experiences is still an open issue. Considering that fluency, as well as effortful elaborate processing, potentially influence aesthetic experiences, we tested how three different title types—semantically matching (fluent, semantically non-matching (non-fluent, and an untitled condition (control—affected experiences of abstract, semi-abstract, and representational art. While participants viewed title/artwork combinations we assessed facial electromygraphic (fEMG recordings over M. corrugator supercilii and M. zygomaticus major muscle to capture subtle changes in emotional and cognitive processing, and asked for subjective liking and interest. Matching titles, but also the more effortful untitled condition, produced higher liking compared to non-fluently processed, non-matching titles especially in abstract art. These results were reflected in fEMG with stronger M. corrugator activations in the non-matching condition followed by the untitled condition. This implies high cognitive effort as well as negative emotions. Only in the matching condition, M. zygomaticus was more strongly activated indicating positive emotions due to fluency. Interest, however, was hardly affected. These results show that high levels of dis-fluency and cognitive effort reduce liking. However, fluency as well as moderate levels of effort contribute to more positive aesthetic experiences.

  20. Developments in Australia : native title and reconciliation

    Energy Technology Data Exchange (ETDEWEB)

    Chaney, F. [National Native Title Tribunal, Perth, WA (Australia)

    2004-07-01

    Until 1992, there was no recognition in the Australian legal system of property or other laws recognizing Indigenous rights concerning European colonial settlement and beyond. Native title was first recognized in 1992. This paper presented an outline of the history leading up to the creation of the National Native Title Tribunal in Perth, Australia, an organization whose aims are to create recognition of native title in Australia. The objects of the Native Title Act of 1993 were discussed, as well as attempts to reconcile indigenous and non-indigenous interests. Particular attention was drawn to the mining industry, as a practical example of the paradigm change in relation to indigenous rights, with an outline of the mining industry's values underlying principles concerning indigenous relations. It was concluded that while there are stringent limits on what is available through the native title process, mediation procedures mean that opportunities for agreement exist. Although reconciliation is in its infancy in Australia, there is a growing acceptance that Aboriginal rights must be considered. The agreement making which is encouraged by the native title process is an acknowledgment of a new relationship in which indigenous people are stakeholders. 72 refs., 5 figs.

  1. Native title: Its effects on petroleum exploration

    Energy Technology Data Exchange (ETDEWEB)

    Vickery, E. [Minter Ellison Baker O`Loughlin, Adelaide, SA (Australia)

    1995-12-31

    The existence of native title in Australia was recognised by the High Court in its historic Mabo No.2 judgement on 3 June 1992. Native title is a shorthand expression used to describe those activities pursued by native peoples in connection with their traditional lands, in accordance with traditional law and custom. It could be extinguished in many ways, and once extinguished cannot be revived. Following an intense public debate, the Commonwealth enacted the Native Title Act (NTA) which, for most purposes, commenced on 1 January 1994. The NTA recognizes and protects native title, enabling its future extinguishment in only limited cases, principally by government acquisition for public purposes which are actually fulfilled. This paper discusses the meaning and application of the NTA and the Racial Discrimination Act, 1975 (RDA) together with their impact on onshore and offshore petroleum activities. It concludes that access to land and security of title are important to petroleum exploration and that exploration companies need to be aware of the conflicts between statutory exploration rights and the rights of native title holders as owners of the land. 1 photo.

  2. Fuzzy Logic Decoupled Longitudinal Control for General Aviation Airplanes

    Science.gov (United States)

    Duerksen, Noel

    1996-01-01

    It has been hypothesized that a human pilot uses the same set of generic skills to control a wide variety of aircraft. If this is true, then it should be possible to construct an electronic controller which embodies this generic skill set such that it can successfully control difference airplanes without being matched to a specific airplane. In an attempt to create such a system, a fuzzy logic controller was devised to control throttle position and another to control elevator position. These two controllers were used to control flight path angle and airspeed for both a piston powered single engine airplane simulation and a business jet simulation. Overspeed protection and stall protection were incorporated in the form of expert systems supervisors. It was found that by using the artificial intelligence techniques of fuzzy logic and expert systems, a generic longitudinal controller could be successfully used on two general aviation aircraft types that have very difference characteristics. These controllers worked for both airplanes over their entire flight envelopes including configuration changes. The controllers for both airplanes were identical except for airplane specific limits (maximum allowable airspeed, throttle lever travel, etc.). The controllers also handled configuration changes without mode switching or knowledge of the current configuration. This research validated the fact that the same fuzzy logic based controller can control two very different general aviation airplanes. It also developed the basic controller architecture and specific control parameters required for such a general controller.

  3. Fuzzy Logic Decoupled Lateral Control for General Aviation Airplanes

    Science.gov (United States)

    Duerksen, Noel

    1997-01-01

    It has been hypothesized that a human pilot uses the same set of generic skills to control a wide variety of aircraft. If this is true, then it should be possible to construct an electronic controller which embodies this generic skill set such that it can successfully control different airplanes without being matched to a specific airplane. In an attempt to create such a system, a fuzzy logic controller was devised to control aileron or roll spoiler position. This controller was used to control bank angle for both a piston powered single engine aileron equipped airplane simulation and a business jet simulation which used spoilers for primary roll control. Overspeed, stall and overbank protection were incorporated in the form of expert systems supervisors and weighted fuzzy rules. It was found that by using the artificial intelligence techniques of fuzzy logic and expert systems, a generic lateral controller could be successfully used on two general aviation aircraft types that have very different characteristics. These controllers worked for both airplanes over their entire flight envelopes. The controllers for both airplanes were identical except for airplane specific limits (maximum allowable airspeed, throttle ]ever travel, etc.). This research validated the fact that the same fuzzy logic based controller can control two very different general aviation airplanes. It also developed the basic controller architecture and specific control parameters required for such a general controller.

  4. INIS: Authority list for journal titles

    International Nuclear Information System (INIS)

    2008-01-01

    This is the 34th revision of the INIS: Authority List for Journal Titles (IAEA-INIS-11). This list is published annually and includes the titles of all journals which have contained articles submitted to INIS at the time of publication. The current list contains 13 538 journal titles, 2 106 regularly scanned journals and 613 key journals. It was last updated in February 2008. A journal - or periodical - is a continuing publication issued in a succession of discrete parts, usually bearing numbering and/or chronological designations and intended to be continued indefinitely. It is generally published within a defined, fixed interval between issues and normally appears more than once per year. It includes a mixture of articles, letters, summaries, etc. Within this definition, annuals such as the Annual Review of Nuclear Science are included, but series titles such as the McGraw-Hill Series in Nuclear Engineering are not. The purpose of this document is to provide descriptive cataloguers with standard elements to include in bibliographic level 'S' of the INIS record. These elements include field (tag) 229 (Full Journal Title), 320 (ISSN) and 321 (CODEN). The full journal title is mandatory, and either the ISSN or the CODEN must be included (both may appear). Instructions on how to use this and other elements of the INIS record format are found in INIS: Guide to Bibliographic Description (IAEA-INIS-1). In order to help the user find titles easily, the list is arranged in six parts, followed by summary statistics: - In Part I, all key journals are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. - In Part II, all key journals are sorted alphabetically under their title. The name of the country or international organization responsible for their input in INIS is entered in parentheses within the body of the entry. - In Part III, all journals that are regularly scanned by

  5. INIS: Authority list for journal titles

    International Nuclear Information System (INIS)

    2007-01-01

    This is the 33rd revision of the INIS: Authority List for Journal Titles (IAEA-INIS-11). This list is published annually and includes the titles of all journals which have contained articles submitted to INIS at the time of publication. The current list contains 13 396 journal titles, 2 170 regularly scanned journals and 578 key journals. It was last updated in February 2007. A journal - or periodical - is a continuing publication issued in a succession of discrete parts, usually bearing numbering and/or chronological designations and intended to be continued indefinitely. It is generally published within a defined, fixed interval between issues and normally appears more than once per year. It includes a mixture of articles, letters, summaries, etc. Within this definition, annuals such as the Annual Review of Nuclear Science are included, but series titles such as the McGraw-Hill Series in Nuclear Engineering are not. The purpose of this document is to provide descriptive cataloguers with standard elements to include in bibliographic level 'S' of the INIS record. These elements include field (tag) 229 (Full Journal Title), 320 (ISSN) and 321 (CODEN). The full journal title is mandatory, and either the ISSN or the CODEN must be included (both may appear). Instructions on how to use this and other elements of the INIS record format are found in INIS: Guide to Bibliographic Description (IAEA-INIS-1). In order to help the user find titles easily, the list is arranged in six parts, followed by summary statistics: - In Part I, all key journals are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. - In Part II, all key journals are sorted alphabetically under their title. The name of the country or international organization responsible for their input in INIS is entered in parentheses within the body of the entry. - In Part III, all journals that are regularly scanned by

  6. INIS: Authority list for journal titles

    International Nuclear Information System (INIS)

    2009-01-01

    This is the 35th revision of the INIS: Authority List for Journal Titles (IAEA-INIS-11). This list is published annually and includes the titles of all journals which have contained articles submitted to INIS at the time of publication. The current list contains 13 750 journal titles, 1 965 regularly scanned journals and 593 key journals. It was last updated in March 2009. A journal - or periodical - is a continuing publication issued in a succession of discrete parts, usually bearing numbering and/or chronological designations and intended to be continued indefinitely. It is generally published within a defined, fixed interval between issues and normally appears more than once per year. It includes a mixture of articles, letters, summaries, etc. Within this definition, annuals such as the Annual Review of Nuclear Science are included, but series titles such as the McGraw-Hill Series in Nuclear Engineering are not. The purpose of this document is to provide descriptive cataloguers with standard elements to include in bibliographic level 'S' of the INIS record. These elements include field (tag) 229 (Full Journal Title), 320 (ISSN) and 321 (CODEN). The full journal title is mandatory, and either the ISSN or the CODEN must be included (both may appear). Instructions on how to use this and other elements of the INIS record format are found in INIS: Guide to Bibliographic Description (IAEA-INIS-1). In order to help the user find titles easily, the list is arranged in six parts, followed by summary statistics: - In Part I, all key journals are grouped under the name of the country or international organization responsible for their input in INIS, then sorted alphabetically under their title. - In Part II, all key journals are sorted alphabetically under their title. The name of the country or international organization responsible for their input in INIS is entered in parentheses within the body of the entry. - In Part III, all journals that are regularly scanned by the

  7. General decoupling procedure for expectation values of four-operator products in electron–phonon quantum kinetics

    International Nuclear Information System (INIS)

    Teeny, Nicolas; Fähnle, Manfred

    2013-01-01

    In the density-matrix formalism of electron–phonon quantum kinetics, the hierarchy of infinitely many coupled equations of motion for the expectation values of products of electron and phonon creation and annihilation operators of arbitrary order is usually terminated on the level of the equations of motion for the expectation values of three-operator products by using decoupling procedures for the four-operator products occurring in these equations. In the literature, decoupling procedures are discussed for special types of electron and phonon states. In the present paper, generalized decoupling procedures are derived for arbitrary electron and phonon states. (paper)

  8. An optimized BP neural network based on genetic algorithm for static decoupling of a six-axis force/torque sensor

    Science.gov (United States)

    Fu, Liyue; Song, Aiguo

    2018-02-01

    In order to improve the measurement precision of 6-axis force/torque sensor for robot, BP decoupling algorithm optimized by GA (GA-BP algorithm) is proposed in this paper. The weights and thresholds of a BP neural network with 6-10-6 topology are optimized by GA to develop decouple a six-axis force/torque sensor. By comparison with other traditional decoupling algorithm, calculating the pseudo-inverse matrix of calibration and classical BP algorithm, the decoupling results validate the good decoupling performance of GA-BP algorithm and the coupling errors are reduced.

  9. Voltage and Current Regulators Design of Power Converters in Islanded Microgrids based on State Feedback Decoupling

    DEFF Research Database (Denmark)

    Federico, de Bosio; de Sousa Ribeiro, Luiz Antonio; Freijedo Fernandez, Francisco Daniel

    2016-01-01

    In stand-alone microgrids based on voltage source inverters state feedback coupling between the capacitor voltage and inductor current degrades significantly the dynamics performance of voltage and current regulators. The decoupling of the controlled states is proposed, considering the limitation...... introduced by system delays. Moreover, a proportional resonant voltage controller is designed according to Nyquist criterion taking into account application requirements. Experimental tests performed in compliance with the UPS standards verify the theoretical analysis.......In stand-alone microgrids based on voltage source inverters state feedback coupling between the capacitor voltage and inductor current degrades significantly the dynamics performance of voltage and current regulators. The decoupling of the controlled states is proposed, considering the limitations...

  10. Reliability Evaluation of a Single-phase H-bridge Inverter with Integrated Active Power Decoupling

    DEFF Research Database (Denmark)

    Tang, Junchaojie; Wang, Haoran; Ma, Siyuan

    2016-01-01

    Various power decoupling methods have been proposed recently to replace the DC-link Electrolytic Capacitors (E-caps) in single-phase conversion system, in order to extend the lifetime and improve the reliability of the DC-link. However, it is still an open question whether the converter level...... reliability becomes better or not, since additional components are introduced and the loading of the existing components may be changed. This paper aims to study the converter level reliability of a single-phase full-bridge inverter with two kinds of active power decoupling module and to compare...... it with the traditional passive DC-link solution. The converter level reliability is obtained by component level electro-thermal stress modeling, lifetime model, Weibull distribution, and Reliability Block Diagram (RBD) method. The results are demonstrated by a 2 kW single-phase inverter application....

  11. Linearly decoupled energy-stable numerical methods for multi-component two-phase compressible flow

    KAUST Repository

    Kou, Jisheng

    2017-12-06

    In this paper, for the first time we propose two linear, decoupled, energy-stable numerical schemes for multi-component two-phase compressible flow with a realistic equation of state (e.g. Peng-Robinson equation of state). The methods are constructed based on the scalar auxiliary variable (SAV) approaches for Helmholtz free energy and the intermediate velocities that are designed to decouple the tight relationship between velocity and molar densities. The intermediate velocities are also involved in the discrete momentum equation to ensure a consistency relationship with the mass balance equations. Moreover, we propose a component-wise SAV approach for a multi-component fluid, which requires solving a sequence of linear, separate mass balance equations. We prove that the methods have the unconditional energy-dissipation feature. Numerical results are presented to verify the effectiveness of the proposed methods.

  12. Research on Inverse Kinematics Program Optimization of 6R Decoupled Robot

    Directory of Open Access Journals (Sweden)

    Daode ZHANG

    2014-02-01

    Full Text Available According to complex analytic formula for the six degrees of freedom decoupled robot, a detailed analysis of the six degrees of freedom decoupled robot analytic formula of export process, as well the causes of multiple solutions. The method of increasing the local variables to avoid processor running the same statement repeatedly is proposed. The method to find the most frequency formula appeared in analytic solution replaced with local variables facilitate the use of loop to reduce the amount of code. It effectively reduces the computation time, optimize the computing process. Finally, taking PUMA560-like robot as an example, the calculation result is verified and simulated in Robotics Toolbox of MATLAB.

  13. A Quasi-ARX Model for Multivariable Decoupling Control of Nonlinear MIMO System

    Directory of Open Access Journals (Sweden)

    Lan Wang

    2012-01-01

    Full Text Available This paper proposes a multiinput and multioutput (MIMO quasi-autoregressive eXogenous (ARX model and a multivariable-decoupling proportional integral differential (PID controller for MIMO nonlinear systems based on the proposed model. The proposed MIMO quasi-ARX model improves the performance of ordinary quasi-ARX model. The proposed controller consists of a traditional PID controller with a decoupling compensator and a feed-forward compensator for the nonlinear dynamics based on the MIMO quasi-ARX model. Then an adaptive control algorithm is presented using the MIMO quasi-ARX radial basis function network (RBFN prediction model and some stability analysis of control system is shown. Simulation results show the effectiveness of the proposed control method.

  14. Decoupling the NLO coupled DGLAP evolution equations: an analytic solution to pQCD

    International Nuclear Information System (INIS)

    Block, Martin M.; Durand, Loyal; Ha, Phuoc; McKay, Douglas W.

    2010-01-01

    Using repeated Laplace transforms, we turn coupled, integral-differential singlet DGLAP equations into NLO (next-to-leading) coupled algebraic equations, which we then decouple. After two Laplace inversions we find new tools for pQCD: decoupled NLO analytic solutions F s (x,Q 2 )=F s (F s0 (x),G 0 (x)), G(x,Q 2 )=G(F s0 (x), G 0 (x)). F s , G are known NLO functions and F s0 (x)≡F s (x,Q 0 2 ), G 0 (x)≡G(x,Q 0 2 ) are starting functions for evolution beginning at Q 2 =Q 0 2 . We successfully compare our u and d non-singlet valence quark distributions with MSTW results (Martin et al., Eur. Phys. J. C 63:189, 2009). (orig.)

  15. A Geometric Approach to Decouple Robotino Motions and its Functional Controllability

    Science.gov (United States)

    Straßberger, Daniel; Mercorelli, Paolo; Sergiyenko, Oleg

    2015-11-01

    This paper analyses a functional control of the Robotino. The proposed control strategy considers a functional decoupling control strategy realized using a geometric approach and the invertibility property of the DC-drives with which the Robotino is equipped. For a given control structure the functional controllability is proven for motion trajectories of class C3, continuous functions with third derivative also being continuous. Horizontal, Vertical and Angular motions are considered and the decoupling between these motions is obtained. Control simulation results using real data of the Robotino are shown. The used control which enables to produce the presented results is a standard Linear Model Predictive Control (LMPC), even though for sake of brevity the standard algorithm is not shown.

  16. Decoupling Design and Verification of a Free-Piston Linear Generator

    Directory of Open Access Journals (Sweden)

    Peng Sun

    2016-12-01

    Full Text Available This paper proposes a decoupling design approach for a free-piston linear generator (FPLG constituted of three key components, including a combustion chamber, a linear generator and a gas spring serving as rebounding device. The approach is based on the distribution of the system power and efficiency, which provides a theoretical design method from the viewpoint of the overall power and efficiency demands. The energy flow and conversion processes of the FPLG are analyzed, and the power and efficiency demands of the thermal-mechanical and mechanical-electrical energy conversion are confirmed. The energy and efficiency distributions of the expansion and compression strokes within a single stable operation cycle are analyzed and determined. Detailed design methodologies of crucial geometric dimensions and operational parameters of each key component are described. The feasibility of the proposed decoupling design approach is validated through several design examples with different output power.

  17. Task definition, decoupling and redundancy resolution by nonlinear feedback in multi-robot object handling

    Science.gov (United States)

    Ramadorai, A. K.; Tarn, T. J.; Bejczy, A. K.

    1992-01-01

    The problem of rigid object handling by multiple robot arms is investigated. The primary goal is to make the object exhibit a prescribed behavior while in contact with a fully known environment. Point contacts are assumed between the object and the arms. The aspect of task definition to achieve decoupling and linearizing control laws is discussed. Control laws are first formulated at the object level to provide decoupled force and position servo loops. It is then used to form control laws for the individual arms. Redundancies exist at the object and arm levels. The object level redundancy is used to achieve secondary goals in object handling. The arm level redundancies are the zero dynamics and can be controlled by redundant inputs. Full use of the available inputs are used to control the system as a whole. Numerical simulations for a dual-arm situation illustrate the validity of the approach.

  18. Fully Decoupled Compliant Parallel Mechanism: a New Solution for the Design of Multidimensional Accelerometer

    Directory of Open Access Journals (Sweden)

    Zhen GAO

    2010-08-01

    Full Text Available In this paper, a novel multidimensional accelerometer is proposed based on fully decoupled compliant parallel mechanism. Three separated chains, which are served as the elastic body, are perpendicular to each other for sensing the kinetic information in different directions without decoupling process. As the crucial part of the whole sensor structure, the revolute and prismatic joints in three pairwise orthogonal branches of the parallel mechanism are manufactured with the alloy aluminium as flexure hinge-based compliant joints. The structure development is first introduced, followed by the comprehensive finite-element analysis including the strain of the sensitive legs, modal analysis for total deformation under different frequency, and the performance of harmonic response. Then, the shape optimization is conducted to reduce the unnecessary parts. Compliance optimization with particle swarm algorithm is implemented to redesign the dimension of the sensitive legs. The research supplies a new viewpoint for the mechanical design of physical sensor, especially acceleration sensor.

  19. Inductor Compensation in Three Phase PFC Control with Decoupling the Input Voltage and Bus Voltage

    Directory of Open Access Journals (Sweden)

    Luo Guang

    2016-01-01

    Full Text Available As the nonlinear structure of the boost ac/dc topology, the PFC is difficult to be controlled. The average state space theory has revealed that the choke current is determined by duty-ratio coupled with input voltage and bus voltage, which makes the high-performance sine-wave current track control more challenging. To remove disturbing variables and reduce the zero-crossing distortion, the decoupling control strategy is presented. Also, it is shown in this paper that the variable inductance has a great influence on PFC and THDI. As the inductor in boost converter varies with the current, a compensating coefficient of current is also proposed. The decoupling strategy and the inductor compensation strategy are implemented on a UPS with three phase input voltage. Numerical simulation and experimental results has indicated the high-performance of these control strategy.

  20. Development of aluminum (Al5083)-clad ternary Ag-In-Cd alloy for JSNS decoupled moderator

    International Nuclear Information System (INIS)

    Teshigawara, M.; Harada, M.; Saito, S.; Oikawa, K.; Maekawa, F.; Futakawa, M.; Kikuchi, K.; Kato, T.; Ikeda, Y.; Naoe, T.; Koyama, T.; Ooi, T.; Zherebtsov, S.; Kawai, M.; Kurishita, H.; Konashi, K.

    2006-01-01

    To develop Ag (silver)-In (indium)-Cd (cadmium) alloy decoupler, a method is needed to bond the decoupler between Al alloy (Al5083) and the ternary Ag-In-Cd alloy. We found that a better HIP condition was temperature, pressure and holding time at 803 K, 100 MPa and 10 min. for small test pieces (φ22 mm in dia. x 6 mm in height). Hardened layer due to the formation of AlAg 2 was found in the bonding layer, however, the rupture strength of the bonding layer is more than 30 MPa, the calculated design stress. Bonding tests of a large size piece (200 x 200 x 30 mm 3 ), which simulated the real scale, were also performed according to the results of small size tests. The result also gave good bonding and enough required-mechanical-strength

  1. A dual voltage control strategy for single-phase PWM converters with power decoupling function

    DEFF Research Database (Denmark)

    Tang, Yi; Qin, Zian; Blaabjerg, Frede

    2015-01-01

    converter topology based on a symmetrical half bridge circuit is proposed to decouple the ripple power so that balanced instantaneous power flow is assured between source and load, and the required dc-link capacitance can be dramatically reduced. For proper closed-loop regulation, the small signal modeling...... is therefore very sensitive to step load changes. Comprehensive simulation results and experimental results are presented to show the effectiveness of the proposed circuit and control algorithm....

  2. Nuclear magnetic resonance of external protons using continuous dynamical decoupling with shallow NV centers

    Science.gov (United States)

    de Las Casas, Charles; Ohno, Kenichi; Awschalom, David D.

    2015-03-01

    The nitrogen vacancy (NV) center in diamond is a paramagnetic defect with excellent spin properties that can reside within a few nanometers of the diamond surface, enabling atomic-scale magnetic resonance sensing of external nuclear spins. Here we use rotating frame longitudinal spin relaxation (T1ρ) based sensing schemes, known as Continuous Dynamical Decoupling (CDD), to detect external nuclear spins with shallow NV centers (DIAMANT program.

  3. A Dantzig-Wolfe decomposition algorithm for linear economic model predictive control of dynamically decoupled subsystems

    DEFF Research Database (Denmark)

    Sokoler, Leo Emil; Standardi, Laura; Edlund, Kristian

    2014-01-01

    This paper presents a warm-started Dantzig–Wolfe decomposition algorithm tailored to economic model predictive control of dynamically decoupled subsystems. We formulate the constrained optimal control problem solved at each sampling instant as a linear program with state space constraints, input ....... In the presence of process and measurement noise, such a regularization term is critical for achieving a well-behaved closed-loop performance....

  4. A decoupled control approach for magnetic suspension systems using electromagnets mounted in a planar array

    Science.gov (United States)

    Groom, Nelson J.

    1993-01-01

    A decoupled control approach for a Large Gap Magnetic Suspension System (LGMSS) is presented. The control approach is developed for an LGMSS which provides five degree-of-freedom control of a cylindrical suspended element that contains a core composed of permanent magnet material. The suspended element is levitated above five electromagnets mounted in a planar array. Numerical results are obtained by using the parameters of the Large Angle Magnetic Suspension Test Fixture (LAMSTF) which is a small scale laboratory model LGMSS.

  5. A Geometric Approach to Decouple Robotino Motions and its Functional Controllability

    OpenAIRE

    Straßberger, Daniel; Mercorelli, Paolo; Sergiyenko, Oleg Yu

    2015-01-01

    This paper analyses a functional control of the Robotino. The proposed controlstrategy considers a functional decoupling control strategy realized using a geometric Approach and the invertibility property of the DC-drives with which the Robotino is equipped. For a given control structure the functional controllability is proven for motion trajectories of class C^3, continuous functions with third derivative also being continuous. Horizontal, Vertical andAngular motions are considered and the ...

  6. Decoupling of Fluctuating Power in Single-Phase Systems Through a Symmetrical Half-Bridge Circuit

    DEFF Research Database (Denmark)

    Tang, Yi; Blaabjerg, Frede; Loh, Poh Chiang

    2015-01-01

    Single-phase ac/dc or dc/ac systems are inherently subject to the harmonic disturbance that is caused by the well-known double-line frequency ripple power. This issue can be eased through the installation of bulky electrolytic capacitors in the dc link. Unfortunately, such passive filtering...... power decoupling method, and both the input current and output voltage of the converter can be well regulated even when very small dc-link capacitors are employed....

  7. Economy-wide material flow indicators in the Czech Republic: trends, decoupling analysis and uncertainties

    Czech Academy of Sciences Publication Activity Database

    Kovanda, J.; Hák, T.; Janáček, Jiří

    2008-01-01

    Roč. 35, č. 1 (2008), s. 25-41 ISSN 0957-4352 Grant - others:GA ČR(CZ) GA205/04/0582; GA MŽP(CZ) SM/320/2/03 Institutional research plan: CEZ:AV0Z50110509 Keywords : material flow indicators * trends * decoupling analysis Subject RIV: AH - Economics Impact factor: 0.568, year: 2008

  8. Nonlinear decoupling of torque and field amplitude in an induction motor

    Energy Technology Data Exchange (ETDEWEB)

    Rasmussen, H. [Aalborg University, Aalborg (Denmark); Vadstrup, P.; Boersting, H. [Grundfos A/S, Bjerringbro (Denmark)

    1997-12-31

    A novel approach to control of induction motors, based on nonlinear state feedback, is presented. The resulting scheme gives a linearized input-output decoupling of the torque and the amplitude of the field. The proposed approach is used to design controllers for the field amplitude and the motor torque. The method is tested both by simulation and by experiments on a motor drive. (orig.) 12 refs.

  9. Decoupled deblurring filter and its application to elastic migration and inversion

    KAUST Repository

    Feng, Zongcai

    2017-08-17

    We present a decoupled deblurring filter that approximates the multiparameter Hessian inverse by using local filters to approximate its submatrices for the same and different parameter classes. Numerical tests show that the filter not only reduces the footprint noise, balances the amplitudes and increases the resolution of the elastic migration images, but also mitigates the crosstalk artifacts. When used as a preconditioner, it accelerates the convergence rate for elastic inversion.

  10. Mechanical Coupling Error Suppression Technology for an Improved Decoupled Dual-Mass Micro-Gyroscope

    Directory of Open Access Journals (Sweden)

    Bo Yang

    2016-04-01

    Full Text Available This paper presents technology for the suppression of the mechanical coupling errors for an improved decoupled dual-mass micro-gyroscope (DDMG. The improved micro-gyroscope structure decreases the moment arm of the drive decoupled torque, which benefits the suppression of the non-ideal decoupled error. Quadrature correction electrodes are added to eliminate the residual quadrature error. The structure principle and the quadrature error suppression means of the DDMG are described in detail. ANSYS software is used to simulate the micro-gyroscope structure to verify the mechanical coupling error suppression effect. Compared with the former structure, simulation results demonstrate that the rotational displacements of the sense frame in the improved structure are substantially suppressed in the drive mode. The improved DDMG structure chip is fabricated by the deep dry silicon on glass (DDSOG process. The feedback control circuits with quadrature control loops are designed to suppress the residual mechanical coupling error. Finally, the system performance of the DDMG prototype is tested. Compared with the former DDMG, the quadrature error in the improved dual-mass micro-gyroscope is decreased 9.66-fold, and the offset error is decreased 6.36-fold. Compared with the open loop sense, the feedback control circuits with quadrature control loop decrease the bias drift by 20.59-fold and the scale factor non-linearity by 2.81-fold in the ±400°/s range.

  11. The impact of perceived similarity on tacit coordination: propensity for matching and aversion to decoupling choices.

    Science.gov (United States)

    Chierchia, Gabriele; Coricelli, Giorgio

    2015-01-01

    Homophily, or "love for similar others," has been shown to play a fundamental role in the formation of interpersonal ties and social networks. Yet no study has investigated whether perceived similarities can affect tacit coordination. We had 68 participants attempt to maximize real monetary earnings by choosing between a safe but low paying option (that could be obtained with certainty) and a potentially higher paying but "risky" one, which depended on the choice of a matched counterpart. While making their choices participants were mutually informed of whether their counterparts similarly or dissimilarly identified with three person-descriptive words as themselves. We found that similarity increased the rate of "risky" choices only when the game required counterparts to match their choices (stag hunt games). Conversely, similarity led to decreased risk rates when they were to tacitly decouple their choices (entry games). Notably, though similarity increased coordination in the matching environment, it did not did not increase it in the decoupling game. In spite of this, similarity increased (expected) payoffs across both coordination environments. This could shed light on why homophily is so successful as a social attractor. Finally, this propensity for matching and aversion to decoupling choices was not observed when participants "liked" their counterparts but were dissimilar to them. We thus conclude that the impact of similarity of coordination should not be reduced to "liking" others (i.e., social preferences) but it is also about predicting them.

  12. The Energy Footprint of China’s Textile Industry: Perspectives from Decoupling and Decomposition Analysis

    Directory of Open Access Journals (Sweden)

    Laili Wang

    2017-09-01

    Full Text Available Energy is the essential input for operations along the industrial manufacturing chain of textiles. China’s textile industry is facing great pressure on energy consumption reduction. This paper presents an analysis of the energy footprint (EFP of China’s textile industry from 1991 to 2015. The relationship between EFP and economic growth in the textile industry was investigated with a decoupling index approach. The logarithmic mean Divisia index approach was applied for decomposition analysis on how changes in key factors influenced the EFP of China’s textile industry. Results showed that the EFP of China’s textile industry increased from 41.1 Mt in 1991 to 99.6 Mt in 2015. EFP increased fastest in the period of 1996–2007, with an average annual increasing rate of 7.7 percent, especially from 2001 to 2007 (8.5 percent. Manufacture of textile sector consumed most (from 58 percent to 76 percent of the energy among the three sub-sectors, as it has lots of energy-intensive procedures. EFP and economic growth were in a relative decoupling state for most years of the researched period. Their relationship showed a clear tendency toward decoupling. Industrial scale was the most important factor that led to the increase of EFP, while decreasing energy intensity contributed significantly to reducing the EFP. The promoting effect of the factors was larger than the inhibiting effect on EFP in most years from 1991 to 2015.

  13. Dynamic decoupling and local atomic order of a model multicomponent metallic glass-former.

    Science.gov (United States)

    Kim, Jeongmin; Sung, Bong June

    2015-06-17

    The dynamics of multicomponent metallic alloys is spatially heterogeneous near glass transition. The diffusion coefficient of one component of the metallic alloys may also decouple from those of other components, i.e., the diffusion coefficient of each component depends differently on the viscosity of metallic alloys. In this work we investigate the dynamic heterogeneity and decoupling of a model system for multicomponent Pd43Cu27Ni10P20 melts by using a hard sphere model that considers the size disparity of alloys but does not take chemical effects into account. We also study how such dynamic behaviors would relate to the local atomic structure of metallic alloys. We find, from molecular dynamics simulations, that the smallest component P of multicomponent Pd43Cu27Ni10P20 melts becomes dynamically heterogeneous at a translational relaxation time scale and that the largest major component Pd forms a slow subsystem, which has been considered mainly responsible for the stabilization of amorphous state of alloys. The heterogeneous dynamics of P atoms accounts for the breakdown of Stokes-Einstein relation and also leads to the dynamic decoupling of P and Pd atoms. The dynamically heterogeneous P atoms decrease the lifetime of the local short-range atomic orders of both icosahedral and close-packed structures by orders of magnitude.

  14. Calculation of the piezoelectric and flexoelectric effects in nanowires using a decoupled finite element analysis method

    International Nuclear Information System (INIS)

    Zhang, Zhiqiang; Geng, Dalong; Wang, Xudong

    2016-01-01

    A simple and effective decoupled finite element analysis method was developed for simulating both the piezoelectric and flexoelectric effects of zinc oxide (ZnO) and barium titanate (BTO) nanowires (NWs). The piezoelectric potential distribution on a ZnO NW was calculated under three deformation conditions (cantilever, three-point, and four-point bending) and compared to the conventional fully coupled method. The discrepancies of the electric potential maximums from these two methods were found very small, validating the accuracy and effectiveness of the decoupled method. Both ZnO and BTO NWs yielded very similar potential distributions. Comparing the potential distributions induced by the piezoelectric and flexoelectric effects, we identified that the middle segment of a four-point bending NW beam is the ideal place for measuring the flexoelectric coefficient, because the uniform parallel plate capacitor-like potential distribution in this region is exclusively induced by the flexoelectric effect. This decoupled method could provide a valuable guideline for experimental measurements of the piezoelectric effects and flexoelectric effects in the nanometer scale.

  15. Design, analysis and testing of a novel decoupled 2-DOF flexure-based micropositioning stage

    Science.gov (United States)

    Yang, Shang; Chen, Weihai; Liu, Jingmeng; Chen, Wenjie

    2017-09-01

    This paper presents the design, analysis and testing of a novel decoupled 2-DOF flexure-based micropositioning stage driven by piezoelectric-actuators (PZTs). In order to enlarge the travel range, a Scott-Russell mechanism and leverage mechanism are arranged in series, constituting a two-grade displacement amplifier to conquer the small displacement of the PZT. The design micropositioning stage is composed of symmetrically distributed flexure modules and each flexure module comprises compound parallelogram flexure beams serving as input decoupling, which allows the output decoupling by employing the tridimensional double compound parallelogram flexure mechanism. Based on the analytical model of both the amplifier and the XY stage established in static and dynamic analysis, the dimensions and performance of the stage has been conducted, which are verified by finite element analysis with ANSYS Workbench and prototype experiment with the fabricated prototype of the designed stage. It can be seen that the workspace of the developed stage is 148.11~μ \\text{m}× 149.73~μ m with the maximum output coupling errors of 0.693% and 0.637% in the y and x directions. The experimental results demonstrate that the proposed micropositioning stage possesses good performance in trajectory tracking and can achieve a wide range of precise positioning.

  16. Decoupled Sliding Mode Control for a Novel 3-DOF Parallel Manipulator with Actuation Redundancy

    Directory of Open Access Journals (Sweden)

    Niu Xuemei

    2015-05-01

    Full Text Available This paper presents a decoupled nonsingular terminal sliding mode controller (DNTSMC for a novel 3-DOF parallel manipulator with actuation redundancy. According to kinematic analysis, the inverse dynamic model for a novel 3-DOF redundantly actuated parallel manipulator is formulated in the task space using Lagrangian formalism and decoupled into three entirely independent subsystems under generalized coordinates to significantly reduce system complexity. Based on the dynamic model, a decoupled sliding mode control strategy is proposed for the parallel manipulator; the idea behind this strategy is to design a nonsingular terminal sliding mode controller for each subsystem, which can drive states of three subsystems to the original equilibrium points simultaneously by two intermediate variables. Additionally, a RBF neural network is used to compensate the cross-coupling force and gravity to enhance the control precision. Simulation and experimental results show that the proposed DNTSMC can achieve better control performances compared with the conventional sliding mode controller (SMC and the DNTSMC without compensator.

  17. Integration of serpentine channels for microchip electrophoresis with a palladium decoupler and electrochemical detection

    Science.gov (United States)

    Bowen, Amanda L; Martin, R. Scott

    2010-01-01

    While it has been shown that microchip electrophoresis with electrochemical detection can be used to separate and detect electroactive species, there is a need to increase the separation performance of these devices so that complex mixtures can be routinely analyzed. Previous work in microchip electrophoresis has demonstrated that increasing the separation channel length leads to an increase in resolution between closely eluting analytes. This paper details the use of lengthened serpentine microchannels for microchip electrophoresis and electrochemical detection where a palladium decoupler is used to ground the separation voltage so that the working electrodes remain in the fluidic network. In this work, palladium electrodepositions were used to increase the decoupler surface area and more efficiently dissipate hydrogen produced at the decoupler. Dopamine and norepinephrine, which only differ in structure by a hydroxyl group, were used as model analytes. It was found that increasing the separation channel length led to improvements in both resolution and the number of theoretical plates for these analytes. The use of a bi-layer valving device, where PDMS-based valves are utilized for the injection process, along with serpentine microchannels and amperometric detection resulted in a multi-analyte separation and an average of 28,700 theoretical plates. It was also shown that the increased channel length is beneficial when separating and detecting analytes from a high ionic strength matrix. This was demonstrated by monitoring the stimulated release of neuro-transmitters from a confluent layer of PC 12 cells. PMID:19739137

  18. Epigenetics decouples mutational from environmental robustness. Did it also facilitate multicellularity?

    Directory of Open Access Journals (Sweden)

    Saurabh Gombar

    2014-03-01

    Full Text Available The evolution of ever increasing complex life forms has required innovations at the molecular level in order to overcome existing barriers. For example, evolving processes for cell differentiation, such as epigenetic mechanisms, facilitated the transition to multicellularity. At the same time, studies using gene regulatory network models, and corroborated in single-celled model organisms, have shown that mutational robustness and environmental robustness are correlated. Such correlation may constitute a barrier to the evolution of multicellularity since cell differentiation requires sensitivity to cues in the internal environment during development. To investigate how this barrier might be overcome, we used a gene regulatory network model which includes epigenetic control based on the mechanism of histone modification via Polycomb Group Proteins, which evolved in tandem with the transition to multicellularity. Incorporating the Polycomb mechanism allowed decoupling of mutational and environmental robustness, thus allowing the system to be simultaneously robust to mutations while increasing sensitivity to the environment. In turn, this decoupling facilitated cell differentiation which we tested by evaluating the capacity of the system for producing novel output states in response to altered initial conditions. In the absence of the Polycomb mechanism, the system was frequently incapable of adding new states, whereas with the Polycomb mechanism successful addition of new states was nearly certain. The Polycomb mechanism, which dynamically reshapes the network structure during development as a function of expression dynamics, decouples mutational and environmental robustness, thus providing a necessary step in the evolution of multicellularity.

  19. Procedure to decouple reflectance and down-shifting effects in luminescent down-shifting enhanced photovoltaics.

    Science.gov (United States)

    Gabr, Ahmed M; Walker, Alexandre W; Wilkins, Matthew M; Kleiman, Rafael; Hinzer, Karin

    2017-06-12

    The down-shifting (DS) process is a purely optical approach used to improve the short-wavelength response of a solar cell by shifting high-energy photons to the visible range, which can be more efficiently absorbed by the solar cell. In addition to the DS effect, coupling a DS layer to the top surface of a solar cell results in a change in surface reflectance. The two effects are intermixed and therefore, usually reported as a single effect. Here we propose a procedure to decouple the two effects. Analytical equations are derived to decouple the two effects, that consider the experimentally measured quantum efficiency of the solar cell with and without the DS layer, in addition to transfer matrix simulations of the parasitic absorption in the device structure. In this work, an overall degradation of 0.46 mA/cm 2 is observed when adding a DS layer composed of silicon nanocrystals embedded in a quartz matrix to a silicon solar cell of 11% baseline efficiency. To fully understand the contribution from each effect, the surface reflectance and DS effects are decoupled and quantified using the described procedure. We observe an enhancement of 0.27 mA/cm 2 in short-circuit current density due to the DS effect, while the surface reflectance effect leads to a degradation of 0.73 mA/cm 2 in short-circuit current density.

  20. Benchmark of AC and DC active power decoupling circuits for second-order harmonic mitigation in kW-scale single-phase inverters

    DEFF Research Database (Denmark)

    Qin, Zian; Tang, Yi; Loh, Poh Chiang

    2015-01-01

    studied, where the commercially available film capacitors, circuit topologies, and control strategies for active power decoupling are all taken into account. Then, an adaptive decoupling voltage control method is proposed to further improve the performance of dc decoupling in terms of efficiency...... and reliability. The feasibility and superiority of the identified solution for active power decoupling together with the proposed adaptive decoupling voltage control method are finally verified by both the experimental results obtained on a 2 kW single-phase inverter.......This paper presents the benchmark study of ac and dc active power decoupling circuits for second-order harmonic mitigation in kW-scale single-phase inverters. First of all, the best solutions of active power decoupling to achieve high efficiency and power density are identified and comprehensively...