Thermische Analyse der Reaktivität vono- undp-Chlornitrobenzen

Because there is risk of autocatalytic reduction, the conversion of chloronitrobenzene with alkaline alcohol is important in safety management. The influence of several parameters on the reaction will be described. The experiments were realized in a non commercial calorimeter, equipped with for the precision calorimeter ACTRON developed hard- and software. For the non-linear kinetic evaluation of the experiments the program TA-kin was used.It could be ascertained, that the calorimetry is applicable for the investigation of the influence of parameters on the conversion of chloronitrobenzene.

     

高速公路管理信息系统开发研究

介绍了马鄂高速公路收费票证管理系统的开发过程，探讨了软件工程生命周期模型进行信息管理系统开发的基本思想和流程， 特别对软件工程生命周期模型实施的７个阶段及其要完成的任务和文档资料进行了详细的讨论．     

用线性方程组与Mathematica软件求解两类自然数幂和公式

利用三个线性方程组与M athem atica4.0软件,给出求解古典自然数幂和公式Sk(n)(k 0,n∈N+)与现代自然数幂和公式Tk(n)(k 0,n∈N+)的若干新的机械计算方法.     

NHPP models for categorized software defects

We develop NHPP models to characterize categorized event data, with application to modelling the discovery process for categorized software defects. Conditioning on the total number of defects, multivariate models are proposed for modelling the defects by type. A latent vector autoregressive structure is used to characterize dependencies among the different types. We show how Bayesian inference can be achieved via MCMC procedures, with a posterior prediction‐based L‐measure used for model selection. The results are illustrated for defects of different types found during the System Test phase of a large operating system software development project. Copyright © 2005 John Wiley & Sons, Ltd.     

在高等数学教学中如何体现数学建模的思想

本文探讨了如何将数学建模思想渗透到理工科高等数学的教学和学习中的问题     

应用型本科大学物理的教学改革新思路

通过对2019年9月中国物理学会物理教育分会学术报告的观摩学习,对目前应用型本科大学物理教学改革进行了反思.文章从实践出发,对教学理念、教学方法、教学内容进行了重新审视,对如何提高学生的自主探究能力进行了讨论,并提出了创办“物理新天地”来加强师生间的沟通,为提高应用型本科大学物理教学质量提供了一种新思路.     

Progressive Traffic-Oriented Resource Management for Reducing Network Congestion in Edge Computing

Edge computing can deliver network services with low latency and real-time processing by providing cloud services at the network edge. Edge computing has a number of advantages such as low latency, locality, and network traffic distribution, but the associated resource management has become a significant challenge because of its inherent hierarchical, distributed, and heterogeneous nature. Various cloud-based network services such as crowd sensing, hierarchical deep learning systems, and cloud gaming each have their own traffic patterns and computing requirements. To provide a satisfactory user experience for these services, resource management that comprehensively considers service diversity, client usage patterns, and network performance indicators is required. In this study, an algorithm that simultaneously considers computing resources and network traffic load when deploying servers that provide edge services is proposed. The proposed algorithm generates candidate deployments based on factors that affect traffic load, such as the number of servers, server location, and client mapping according to service characteristics and usage. A final deployment plan is then established using a partial vector bin packing scheme that considers both the generated traffic and computing resources in the network. The proposed algorithm is evaluated using several simulations that consider actual network service and device characteristics.     

Direct measurement of static yield properties of cohesive suspensions

A technique of yield stress investigation based upon the combined use of two devices (an applied stress rheometer and an instrument for measuring the propagation velocity of small amplitude, torsional shear waves) is described. Investigations into the low shear rate rheological properties of illitic suspensions are reported for shear rates, typically, in the range 10^–4— 10^–1 s^–1 under applied stresses in the range 0.01 — 10 Nm^–2 and involving shear strains between 10^–1 and 10^–4. Results are presented which demonstrate that the technique does not invoke the excessive structural disruption of material associated with applied shear rate based methods (direct and otherwise) and the widely encountered problem of wall slip at the surface of rotational measuring devices is avoided using miniature vane geometries. Results are compared with those obtained using smooth-walled cyclindrical measuring devices in both applied stress and applied shear rate instruments.Yield measurements are considered in relation to the structural properties of the undisturbed material state and shear moduli obtained by studying the propagation of small amplitude (10^–5 rad), high frequency (~ 300 Hz) torsional shear waves through the test materials are reported. Experimental techniques and instrument modifications to permit these measurements are described.     

国产微机软件系统DDJ－W的近期进展

本文介绍有限元分析与优化设计微机软件系统ＤＵＪ－Ｗ近期开发出的先进的功能及其在工业领域的应用．