碾压混凝土在汾河二库大坝工程中的应用

汾河二库大坝施工的试验研究及实践表明，掺粉煤灰的碾压混弹簧土能达到同标号常态混凝土的全部技术要求，为北方高寒地区碾压混凝土的应用开辟了新的途径。     

有关绥李三号裂果因子的研究

以绥李三号、绫棱红、吉林六号为试材,对影响裂果的生理指标进行了测试,结果表明,果实硬度不均匀性促进果实开裂,水分影响裂果,而可溶性固性物含量与裂果无明显相关。在防止措施上,喷施硼砂溶液可减轻裂果比率。     

新钢6号炉炉型维护

新钢6#炉面对不稳定的原燃料条件、不完善的操作制度等不利条件,从维护合理的操作炉型入手,改进高炉操作和日常管理,炉况保持了长期稳定运行,各项技术经济指标比以前有了大的进步.     

爱在追寻中迷失——对《无字》中吴为悲剧的深层分析

吴为是张洁长篇小说《无字》中的女主角，在爱的追寻中迷失了方向，最终自杀。文章认为，导致吴为悲剧的原因集中于两点：一是男权意识在当代社会的延续和冥顽不化，二是女性对男权的认同和内化。真爱的追寻要有男人的自觉，更要有女人的自省。     

On a Feasible–Infeasible Two-Population (FI-2Pop) genetic algorithm for constrained optimization: Distance tracing and no free lunch

We explore data-driven methods for gaining insight into the dynamics of a two-population genetic algorithm (GA), which has been effective in tests on constrained optimization problems. We track and compare one population of feasible solutions and another population of infeasible solutions. Feasible solutions are selected and bred to improve their objective function values. Infeasible solutions are selected and bred to reduce their constraint violations. Interbreeding between populations is completely indirect, that is, only through their offspring that happen to migrate to the other population. We introduce an empirical measure of distance, and apply it between individuals and between population centroids to monitor the progress of evolution. We find that the centroids of the two populations approach each other and stabilize. This is a valuable characterization of convergence. We find the infeasible population influences, and sometimes dominates, the genetic material of the optimum solution. Since the infeasible population is not evaluated by the objective function, it is free to explore boundary regions, where the optimum is likely to be found. Roughly speaking, the No Free Lunch theorems for optimization show that all blackbox algorithms (such as Genetic Algorithms) have the same average performance over the set of all problems. As such, our algorithm would, on average, be no better than random search or any other blackbox search method. However, we provide two general theorems that give conditions that render null the No Free Lunch results for the constrained optimization problem class we study. The approach taken here thereby escapes the No Free Lunch implications, per se.     

我国地铁信号技术发展研究

在总结回顾国内外地铁信号技术发展及技术特点的基础上，分析了我国地铁信号系统发展中存在的关键问题，提出了解决问题的方案与实施方法．     

RPE量表在监测散手比赛强度中的应用

本文论述了ＲＰＥ量表在监测散手运动员比赛强度中的运用。     

逆向选择、信号传递与管理层收购

管理层收购(MBO)是现阶段我国产权改革实践中的一个热点问题，虽然由于种种原因，被认为在我国当前经济环境下不宜施行，但仍然具有其独特的优点。目前，社会普遍关注的是MBO的操作规程及其财务风险等问题，而忽视了对企业管理层成员的筛选。本认为，在这种筛选过程中存在逆向选择问题。并试图证明通过信号传递能够实现分离均衡。     

Collective signaling behavior in a networked-oscillator model

We propose and study the collective behavior of a model of networked signaling objects that incorporates several ingredients of real-life systems. These ingredients include spatial inhomogeneity with grouping of signaling objects, signal attenuation with distance, and delayed and impulsive coupling between non-identical signaling objects. Depending on the coupling strength and/or time-delay effect, the model exhibits completely, partially, and locally collective signaling behavior. In particular, a correlated signaling (CS) behavior is observed in which there exist time durations when nearly a constant fraction of oscillators in the system are in the signaling state. These time durations are much longer than the duration of a spike when a single oscillator signals, and they are separated by regular intervals in which nearly all oscillators are silent. Such CS behavior is similar to that observed in biological systems such as fireflies, cicadas, crickets, and frogs. The robustness of the CS behavior against noise is also studied. It is found that properly adjusting the coupling strength and noise level could enhance the correlated behavior.     

Quasi steady-state approximations in complex intracellular signal transduction networks – a word of caution

Enzyme reactions play a pivotal role in intracellular signal transduction. Many enzymes are known to possess Michaelis–Menten (MM) kinetics and the MM approximation is often used when modeling enzyme reactions. However, it is known that the MM approximation is only valid at low enzyme concentrations, a condition not fulfilled in many in vivo situations. Recently the total quasi steady-state approximation (tQSSA) has been developed for enzymes with MM kinetics. This new approximation is valid not only whenever the MM approximation is, but moreover in a greatly extended parameter range. Starting from a single reaction and arriving at the mitogen activated protein kinase (MAPK) cascade, we give several examples of biologically realistic scenarios where the MM approximation leads to quantitatively as well as qualitatively wrong conclusions, and show that the tQSSA improves the accuracy of the simulations greatly.