室温磁致冷材料成型研究

本文讨论了磁致冷材料在磁致冷机中的使用，针对室温磁致冷材料要与换热流体进行快速、充分的热交换和现阶段开发研究的一些具有巨磁热效应的室温磁致冷材料多为金属间化合物的特点，分析比较了目前已有的一些磁致冷材料成型工艺方法的优缺点，介绍了一种新的成型工艺方法。     

微细纤维发展概况与趋势

介绍了微细纤维发展概况,包括生产工艺,纤维性能,最终用途以及当前的发展趋势。并对我国发展微细纤维提出建议.     

聚羧酸系高效减水剂的研究开发

评述了聚羧酸系减水剂的研究现状，重点讨论了聚羧酸系减水剂的微观结构、作用机理以及化学合成。     

对我国乙烯工业发展的几点思考

阐述了世界乙烯工业现状、发展特点以及新型工艺技术分析，重点对我国乙烯工业总体发展水平、生产、消费、进出口贸易作了详细的讨论。在此基础上对我国乙烯工业发展方向、方式和规划提出了建议。     

氯丁橡胶胶粘剂

1低温聚合、快速结晶型氯了用胶氯丁橡胶的结晶度与反式1，4含量有关，而反式1，4含量又是由乳液聚合温度决定的，聚合温度越低，反式1，4含量越高。为了得到快速结晶型氯丁橡胶，聚合必须在较低温度下进行，一般不高于15℃。快速结晶型氯丁橡胶广泛用于鞋底的粘接、层压板的粘合、汽车装饰，以及其它多种用途。主要从引发剂、调节剂等几个方面改进氯丁橡胶的性能：2＠基氯T橡胶。驻基氯丁胶是氯丁二烯和甲基丙烯酸的共聚物，是非结晶性，适用于室温硫化和耐热性用途。与快结晶型氯丁橡胶相比，由其配制的胶粘剂粘结强度形成更快，耐热性增…     

国外过氧化氢在化学合成中应用研究进展

介绍了近期国外过氧化氢在部分化学品合成中应用研究新进展 ,产品包括过碳酸钠、过碳酰胺、4Na2 SO4·2H2 O2 ·NaCl加合物、叔胺氧化物、水合肼、二羟基苯、季铵盐过氧化氢和甲乙酮肟。内容涉及产品质量 (纯度、安定性、溶解速率、外观等 )、产品收率、催化剂、工艺过程等方面改进。主要介绍专利技术。     

聚氯乙烯增塑剂现状与发展趋势

介绍了国内外聚氯乙烯增塑剂市场形势，分析了我国工业塑料与增塑剂的现状，发展与消费结构关系，论述了工业增塑剂行业的清洁生产工艺研究最新进展，特别是国内外采用固体超强酸，稀土固体酸，固载杂多酸及复合固体氧化物催化剂催化酯合成工业增塑剂的研究动态，指出高效，持效，无毒或低毒，无公害化的增塑剂产品，清洁化工业生产方式是全球塑料助剂的发展趋势。     

气相法聚乙烯高效催化剂的进展

综述了国内外气相法聚乙烯高效催化剂研究进展概况,以及各种新型高效催化剂制备技术和性能,并对开发我国新型高效推化剂提出了看法。     

Testing scientific software: A systematic literature review

ContextScientific software plays an important role in critical decision making, for example making weather predictions based on climate models, and computation of evidence for research publications. Recently, scientists have had to retract publications due to errors caused by software faults. Systematic testing can identify such faults in code.ObjectiveThis study aims to identify specific challenges, proposed solutions, and unsolved problems faced when testing scientific software.MethodWe conducted a systematic literature survey to identify and analyze relevant literature. We identified 62 studies that provided relevant information about testing scientific software.ResultsWe found that challenges faced when testing scientific software fall into two main categories: (1) testing challenges that occur due to characteristics of scientific software such as oracle problems and (2) testing challenges that occur due to cultural differences between scientists and the software engineering community such as viewing the code and the model that it implements as inseparable entities. In addition, we identified methods to potentially overcome these challenges and their limitations. Finally we describe unsolved challenges and how software engineering researchers and practitioners can help to overcome them.ConclusionsScientific software presents special challenges for testing. Specifically, cultural differences between scientist developers and software engineers, along with the characteristics of the scientific software make testing more difficult. Existing techniques such as code clone detection can help to improve the testing process. Software engineers should consider special challenges posed by scientific software such as oracle problems when developing testing techniques.     

Betting system for formative code review in educational competitions

Using competitions to motivate students is a well-known practice that has proved to be successful. Nevertheless, grading students only through their results in the competition could unfairly limit the range of grades that each student can get: regardless of the quality of the different teams participating, one student must necessarily win the tournament, another must be second, and so on until the last place. In fact, player rankings are relative assessments that are conditioned by the performance of every student. In this paper, we propose solving this issue by making students do a code review before betting on the competition. By betting, the grade of students depends both on the performance of their own solution and the one they bet on. This way, grades represent not only coding skills, but also code analysis skills, widening the attainable range of grades and allowing for a fairer grade distribution. As a result, students that are not so proficient in coding are rewarded if they demonstrate they can do a good analysis of the source code written by others, which is a very valuable skill in the professional world. We provide a case study in an undergraduate course, showing positive results.