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91.
Alexander Afriat 《Foundations of Physics Letters》2003,16(3):293-301
An abstract treatment of Bell inequalities in proposed, in which the parameters characterizing Bell's observable can be times rather than directions. The violation of a Bell inequality might then be taken to mean that a property of a system can be changed by the timing of a distant measurement, which could take place in the future. 相似文献
92.
Al. Ivanov 《International Journal of Theoretical Physics》2004,43(1):77-87
The notion of Fock theory is introduced in the framework of quantum logics, which are here orthomodular atomic lattices satisfying the covering property. It is shown that there are some fundamental facts concerning particles, which may be successfully discussed in this general context. One of these facts is to establish the theoretical conditions for considering particles as sharply defined entities. The other refers to the theoretical circumstances, which almost impose to consider that some particles have a structure, meaning they are composed from other particles. This last problem is strongly related with the conservative time evolutions. 相似文献
93.
戴月飞 《科技情报开发与经济》2007,17(17):F0002-F0002,109
阐述了职业中学教育成本的含义,探讨了进行教育成本核算的意义,针对目前职业中学教育成本核算中遇到的问题,提出了相应的解决办法。 相似文献
94.
介绍了高校研究生论文答辩系统的核心算法,并给出了一种处理冲突的方法——专家相关回溯法。 相似文献
95.
R. W. Home 《Physics in Perspective (PIP)》2005,7(4):473-490
I survey highlights of the practice of physics and allied sciences in Melbourne,Australia, from the 1850s, soon after Europeans
first settled in the area, to the present. I note recognizable sites of past and current physical-science activity that may
be visited, as well as exhibits of historic items of physics apparatus. I trace the role of physics, in the course of a century
and a half, in the evolution of a pioneering settlement into a large city embedded in a modern industrial economy. 相似文献
96.
We study the vessel arrival process in bulk ports handling either cargo containers or minerals. Then we introduce the SHIP/G/1 queue to be able to study the queueing behavior at the port. We present approximations for the asymptotic probabilities of delay and the number of vessels at the port. Numerical examples show the accuracy of the approximations. In appendices, we provide details of the analysis of the number of vessels at the port and the correlation properties of the vessel arrival process. 相似文献
97.
Applying multi-electrode-pair pulse TEA CO2 laser to one optical resonance cavity will have several advantages over traditional method, including higher gain, shorter pulse discharge time interval, and in particular, continuous adjustable time interval of multi-pulse laser output can be achieved without high vacuum condition. To improve laser's working stabilization, we proposed new approaches to optimize laser structure design and discharge pulse time interval selection. 相似文献
98.
This paper deals with the analysis of an M/M/c queueing system with setup times. This queueing model captures the major characteristics of phenomena occurring in production
when the system consists in a set of machines monitored by a single operator. We carry out an extensive analysis of the system
including limiting distribution of the system state, waiting time analysis, busy period and maximum queue length.
AMS subject classification: 90B22, 60K25 相似文献
99.
Pierre Gaspard 《Journal of statistical physics》2004,117(3-4):599-615
A concept of time-reversed entropy per unit time is introduced in analogy with the entropy per unit time by Shannon, Kolmogorov, and Sinai. This time-reversed entropy per unit time characterizes the dynamical randomness of a stochastic process backward in time, while the standard entropy per unit time characterizes the dynamical randomness forward in time. The difference between the time-reversed and standard entropies per unit time is shown to give the entropy production of Markovian processes in nonequilibrium steady states. 相似文献
100.
张美玲 《新乡学院学报(自然科学版)》2008,(3):78-80
采用问卷调查法对河南省5所院校的426名体育教育专业学生入校前运动经历、在校时运动专项技能现状进行了调查。结果表明,1)一些体育教育专业开设的专选课程少,不能满足学生的需求;2)部分学校体育教育专业课程的设置不合理;3)学生在校期间专项技能学习时间不足.课余练习少,缺乏组织与指导。 相似文献