基于时间成本双主线软件项目管理系统的研究与设计

在深入地分析软件项目管理和软件项目管理系统的现状基础上,针对现阶段我国软件企业大多生产规模较小并有协同开发趋势并且竞争比较激烈的情况下,吸取小组软件过程的先进的管理理念和项目管理工具PROJECT2000和RUP的优点．提出“时间-成本双主线”软件项目管理模式,其中“双主线”即系统突出时间和成本的并行管理特点．提出“双库”特征的系统构建环境,即将现有项目管理所依据项目管理数据库与存储以往项目的过程数据库和过程能力基线数据的项目信息资源库相结合．最后,系统给出基于Web环境下,突出“时间-成本双主线”特点的新型软件项目管理系统-DSPMS的设计构架和设     

基于正交试验设计的Ω焊缝焊接工艺参数的确定

为了确定CRDM焊接机焊接工艺参数,应用正交试验设计法进行了Ω焊缝焊接工艺评定试验,用数理统计方法分析了对焊缝质量产生影响的各焊接参数的主次顺序,得到了最优生产条件。     

Generating near-bipartite bricks

Carvalho, Lucchesi and Murty (2006, How to build a brick, Discrete Math., 306, 2383-2410) gave a generation procedure for bricks. In particular, they showed that every brick may be constructed from , the triangular prism , and the Petersen graph. The object of this paper is to establish a generation procedure that is specific to the class of near-bipartite bricks. In particular, we show that every near-bipartite brick may be constructed from and so that each intermediate brick is also near-bipartite. Norine and Thomas (2007, Generating bricks, J. Combin. Theory Ser. B, 97, 769-817) proved a generation theorem for simple bricks. In a subsequent work with Marcelo H. de Carvalho (2017, Generating simple near-bipartite bricks, https://arxiv.org/abs/1704.08796 ), we use the results of this paper to prove a generation theorem for simple near-bipartite bricks.     

Error amplification in capillary viscometry of power law fluids with slip

Rheological characterization through capillary viscometry of molten polymers that slip at solid walls is quite a challenging task. In fact, it is based on an indirect measurement that introduces remarkable error amplifications, mainly because of the Mooney procedure. Sometimes these are so large that unphysical results are obtained. In this paper we study these issues analytically, using a particular power law fluid as a test model. Interestingly, it is found that there is dependence on the fluid characteristics, such as the shear thinning behavior. Two software programs are provided in the Mendeley Data Repository. One quantifies the error amplification, the other one can be used by interested researchers for properly designing the testing setup (e.g. the most convenient choice for the capillary diameters). In order to use the programs, though, the material constants of the fluid that is intended to be characterized must be known at least approximately.     

Some remarks on the renormalization group and Chapman-Enskog type methods in singularly perturbed problems

In this paper, we show that for a large class of singularly perturbed problems, the classical Chapman-Enskog asymptotic procedure leads, in a shorter way, to the same asymptotic expansion as the renormalization group (RG) approach. We also prove that the Chapman-Enskog expansion gives the expected error estimates uniformly on $[0,\infty )$.     

Including sustainability criteria into inventory models

Research on sustainability performance has considerably enriched operations management literature in recent years. However, work with quantitative models is still scarce. This paper contributes by revisiting classical inventory methods taking sustainability concerns into account. We believe that reducing all aspects of sustainable development to a single objective is not desirable. We thus reformulate the classical economic order quantity model as a multiobjective problem. We refer to this model as the sustainable order quantity model. Then, a multi-echelon extension of the sustainable order quantity model is studied. For both models, the set of efficient solutions (Pareto optimal solutions) is analytically characterized. These results are used to provide some insights about the effectiveness of different regulatory policies to control carbon emissions. We also use an interactive procedure that allows the decision maker to quickly identify the best option among these solutions. The proposed interactive procedure is a new combination of multi-criteria decision analysis techniques.     

The first in situ Raman spectroscopic study of San rock art in South Africa: procedures and preliminary results

Southern Africa has a rich heritage of hunter‐gatherer, herder and farmer rock art traditions made by using both painted and engraved techniques. Until now, there have been only a handful of studies on the chemical analysis of the paint, as all previous types of analysis required the removal of pigment samples from the sites a practice which has been avoided. Raman spectroscopy is an ideal techniques to analyse the paint non‐destructively and also offers the possibility of in situ work with portable instruments. This article describes the procedures and reports the preliminary results of the first in situ Raman spectroscopic study of rock art in South Africa (also a first worldwide), where we, first, evaluate the capability of a Raman portable instrument in very difficult conditions, second, analyse the paints in order to contribute to a better knowledge of the technology used and, third, evaluate the possible contribution of in situ analyses in conservation studies. The paintings from two different rock art sites were studied. The instrument proved to be highly suitable for in situ analyses in physically very challenging conditions. Most of the pigments and alteration products previously detected under laboratory conditions were identified, thereby giving information on both the pigments and conservation state of the paintings. A layered structure of alteration products and pigment was identified in situ for the first time by controlling the laser power, thereby obtaining the same results as in mapping experiments of cross sections of paint. Copyright © 2010 John Wiley & Sons, Ltd.     

Lawsuit

A lawsuit or "suit in law"is a civil action brought in a court of law in which a plaintiff, a party who claims to have incurred loss as a result of a defendant's actions, demands a legal or equitable remedy. The defendant is required to respond to the plaintiff's complaint. If the plaintiff is successful, judgment is in the plaintiff's favor, and a variety of court orders may be issued to enforce a right, award damages, or impose a temporary or permanent injunction to prevent an act or compel an act. A declaratory judgment may be issued to prevent future legal disputes. Although not as common, lawsuit may also refer to a criminal action, criminal proceeding, or criminal claim.     

高校乒乓球普修课教学方法研究

现在很多高等院校相继开展了乒乓球普修课,本文拟针对乒乓球普修课的教学特点,结合教学实践对乒乓球普修课教学方法进行理论研究,以便综合合理的运用这些教学方法,提高教学质量,为高等教育服务。