In this paper, we give sufficient conditions for the existence and uniqueness of asymptotically w-antiperiodic solutions for a nonlinear differential equation with piecewise constant argument in a Banach space when w ...In this paper, we give sufficient conditions for the existence and uniqueness of asymptotically w-antiperiodic solutions for a nonlinear differential equation with piecewise constant argument in a Banach space when w is an integer. This is done using the Banach fixed point theorem. An example involving the heat operator is discussed as an illustration of the theory.展开更多
In this work, we study binary linear distinct weight codes (DW-code). We give a complete classification of -DW-codes and enumerate their equivalence classes in terms of the number of solutions of specific Diophantine ...In this work, we study binary linear distinct weight codes (DW-code). We give a complete classification of -DW-codes and enumerate their equivalence classes in terms of the number of solutions of specific Diophantine Equations. We use the Q-extension program to provide examples.展开更多
为保障电力通信系统的稳定性,研究提出基于灵活以太网(flexible ethernet,FlexE)/切片分组网(slicing packet network,SPN)装置的小颗粒切片和恒定比特率(constant bit rate,CBR)业务改进策略。该策略构建支持小颗粒技术的切片分组网框...为保障电力通信系统的稳定性,研究提出基于灵活以太网(flexible ethernet,FlexE)/切片分组网(slicing packet network,SPN)装置的小颗粒切片和恒定比特率(constant bit rate,CBR)业务改进策略。该策略构建支持小颗粒技术的切片分组网框架,并设计保护倒换方法。同时为保障高隔离以太网对电力系统的适应性,对以太网的操作维护管理(operation administration and maintenance,OAM)配置流程进行优化。此外,为解决时钟抖动的问题,研究还提出基于改进直接数字式频率合成器的时钟恢复方法。实验分析表明,当字节数为200 B时,基于EoFgu-CBR的网络设备的时延为117μs,低于其他厂家的设备。这说明提出的基于FlexE/SPN装置的小颗粒切片和CBR业务改进策略能有效保障电力系统通信的实时性。展开更多
Cross-sectional homogenization for full-core calculations of small and complex reactor configurations,such as research reactors,has been recently recognized as an interesting and challenging topic.This paper presents ...Cross-sectional homogenization for full-core calculations of small and complex reactor configurations,such as research reactors,has been recently recognized as an interesting and challenging topic.This paper presents the development of a PARCS/Serpent model for the neutronics analysis of a research reactor type TRIGA Mark-II loaded with Russian VVR-M2 fuel(known as the Dalat Nuclear Research Reactor or DNRR).The full-scale DNRR model and a supercell model for a shim/safety rod and its surrounding fuel bundles with the Monte Carlo code Serpent 2 were proposed to generate homogenized fewgroup cross sections for full-core diffusion calculations with PARCS.The full-scale DNRR model with Serpent 2 was also utilized as a reference to verify the PARCS/Serpent calculations.Comparison of the effective neutron multiplication factors,radial and axial core power distributions,and control rod worths showed a generally good agreement between PARCS and Serpent 2.In addition,the discrepancies between the PARCS and Serpent 2 results are also discussed.Consequently,the results indicate the applicability of the PARCS/Serpent model for further steady state and transient analyses of the DNRR.展开更多
文摘In this paper, we give sufficient conditions for the existence and uniqueness of asymptotically w-antiperiodic solutions for a nonlinear differential equation with piecewise constant argument in a Banach space when w is an integer. This is done using the Banach fixed point theorem. An example involving the heat operator is discussed as an illustration of the theory.
文摘In this work, we study binary linear distinct weight codes (DW-code). We give a complete classification of -DW-codes and enumerate their equivalence classes in terms of the number of solutions of specific Diophantine Equations. We use the Q-extension program to provide examples.
文摘为保障电力通信系统的稳定性,研究提出基于灵活以太网(flexible ethernet,FlexE)/切片分组网(slicing packet network,SPN)装置的小颗粒切片和恒定比特率(constant bit rate,CBR)业务改进策略。该策略构建支持小颗粒技术的切片分组网框架,并设计保护倒换方法。同时为保障高隔离以太网对电力系统的适应性,对以太网的操作维护管理(operation administration and maintenance,OAM)配置流程进行优化。此外,为解决时钟抖动的问题,研究还提出基于改进直接数字式频率合成器的时钟恢复方法。实验分析表明,当字节数为200 B时,基于EoFgu-CBR的网络设备的时延为117μs,低于其他厂家的设备。这说明提出的基于FlexE/SPN装置的小颗粒切片和CBR业务改进策略能有效保障电力系统通信的实时性。
基金the Ministry of Science and Technology of Vietnam(No.DTCB.06/18/VKHKTHN).
文摘Cross-sectional homogenization for full-core calculations of small and complex reactor configurations,such as research reactors,has been recently recognized as an interesting and challenging topic.This paper presents the development of a PARCS/Serpent model for the neutronics analysis of a research reactor type TRIGA Mark-II loaded with Russian VVR-M2 fuel(known as the Dalat Nuclear Research Reactor or DNRR).The full-scale DNRR model and a supercell model for a shim/safety rod and its surrounding fuel bundles with the Monte Carlo code Serpent 2 were proposed to generate homogenized fewgroup cross sections for full-core diffusion calculations with PARCS.The full-scale DNRR model with Serpent 2 was also utilized as a reference to verify the PARCS/Serpent calculations.Comparison of the effective neutron multiplication factors,radial and axial core power distributions,and control rod worths showed a generally good agreement between PARCS and Serpent 2.In addition,the discrepancies between the PARCS and Serpent 2 results are also discussed.Consequently,the results indicate the applicability of the PARCS/Serpent model for further steady state and transient analyses of the DNRR.
