利用GPU对3D角色模型绘制水墨效果

在GPU内利用非线性纹理映射以及模型表面法向量和视点向量之间的夹角来模拟线条的粗细及浓淡变化,解决了在某些视角条件下非线性纹理映射导致的大面积黑斑问题.模型表面的淡墨晕染通过模型上指定的某点位置与其他各顶点连线向量和该点法向量夹角信息进行控制.实现了水墨效果的3D角色在3D水墨效果场景中的实时漫游.     

澳大利亚/新西兰插头机械强度测试

探讨理解新版澳大利亚/新西兰插头标准针对插销的机械强度测试的方法和目的,并比较不同标准之间和标准新旧版之间的差异。     

不同混凝剂对各种超滤膜跨膜压力的影响

采用聚合氯化铝和三氯化铁作为混凝剂,应用于浸入式PVDF膜、外压柱式PVDF膜和内压柱式PVC合金膜的混凝预处理.结果表明:对于PVDF膜,采用铝盐能够较好地减缓跨膜压力的升高趋势,对于PVC合金膜,采用铁盐作为混凝剂效果较好.混凝剂的选择主要考虑膜的材质,对膜的运行方式可以较少考虑.     

Synthesis of multiblock thermoplastic elastomers based on biodegradable poly (lactic acid) and polycaprolactone

A new biodegradable (AB)_n type of multiblock copolymers derived from poly (ε-caprolactone) (PCL) and poly (lactic acid) (PLA) was prepared via the method of the chain extending reaction among PCL oligomers, PLA oligomers and hexamethylene diisocyanate (HDI). Fourier transform infrared spectra (FTIR), ¹H NMR, thermal gravity analysis (TGA) and derivative thermograms (DTG) were used to characterize the copolymers and the results showed that PCL and PLA were coupled by the reaction between –NCO groups and terminal –OH and –COOH groups of PCL and PLA, respectively. The material displayed enhanced mechanical properties: Young's modulus was as low as 2.7 ± 0.7 MPa and elongation at break value was above 790% at the composition of PCL/PLA = 80/20 (w/w). Moreover, according to SEM micrographs interfacial adhesion of the composites was improved. Thermal degradation temperature of the composites was higher than PLA but was lower than PCL, which is an advantage for industry process.     

山西翼城县：多措并举 强化饮水安全工程管理

山西省翼城县自2000年至今，共兴建各类农村饮水解困和饮水安全工程113处，这些工程效益的充分发挥，为农村经济的发展、农民生活质量的改善和提高奠定了坚实的物质基础，为构建和谐文明的新农村提供了保障。在农村饮水工程管理工作中，翼城县以保障安全供水为核心，以管理规范化、制度化为主要方向，以水费计收、“两费”提取为重点．以保障工程良性运行为目标，在明晰产权、组建用水者协会、推行基本用水量制度、折旧大修费积累和使用等方面做了许多有益的尝试，取得了一定成效。2008年11月中旬，记者专程到翼城县进行了实地采访。     

高温金属基复合材料的研究进展

讨论了高温金属基复合材料的界面稳定性,列举了几种典型的高温金属基复合材料及其制备,对高温金属基复合材料的美好前景进行了展望.     

An LP rounding algorithm for approximating uncapacitated facility location problem with penalties

In this paper, we consider an interesting variant of the facility location problem called uncapacitated facility location problem with penalties (UFLWP, for short) in which each client can be either assigned to some opened facility or rejected by paying a penalty. Existing approaches [M. Charikar, S. Khuller, D. Mount, G. Narasimhan, Algorithms for facility location problems with outliers, in: Proc. Symposium on Discrete Algorithms, 2001, p. 642] and [K. Jain, M. Mahdian, E. Markakis, A. Saberi, V. Vazirani, Greedy facility location algorithms analyzed using dual fitting with factor-revealing LP, J. ACM 50 (2003) 795] for this variant of facility location problem are all based on primal-dual method. In this paper, we present an efficient linear programming (LP) rounding based approach to show that LP rounding techniques are equally capable of solving this variant of facility location problem. Our algorithm uses a two-phase filtering technique (generalized from Lin and Vitter's [?-approximation with minimum packing constraint violation, in: Proc. 24th Annual ACM Symp. on Theory of Computing, 1992, p. 771]) to identify those to-be-rejected clients and open facilities for the remaining ones. Our approach achieves an approximation ratio of 2+2/e (≈2.736) which is worse than the best approximation ratio of 2 achieved by the much more sophisticated dual fitting technique [K. Jain, M. Mahdian, E. Markakis, A. Saberi, V. Vazirani, Greedy facility location algorithms analyzed using dual fitting with factor-revealing LP, J. ACM 50 (2003) 795], but better than the approximation ratio of 3 achieved by the primal-dual method [M. Charikar, S. Khuller, D. Mount, G. Narasimhan, Algorithms for facility location problems with outliers, in: Proc. Symposium on Discrete Algorithms, 2001, p. 642]. Our algorithm is simple, natural, and can be easily integrated into existing LP rounding based algorithms for facility location problem to deal with outliers.     

昆明二电厂厂房设计

介绍火力发电厂综合楼建筑平面功能、建筑造型、材料选择、室内空间等方面的问题,并为工业建筑建筑设计提出了一些思路。     

面向路径的测试数据自动生成工具及其图形界面的Tcl/Tk设计

面向路径的测试数据生成问题是软件测试中一个基本问题。文章介绍了自主开发的面向路径的测试数据自动生成工具。Tcl/Tk是一种图形界面设计工具,其功能强大,可运行于Windows,UNIX等操作系统上,具有良好的可移植性。文章简要介绍Tcl/Tk,并给出用Tcl/Tk设计面向路径的测试数据自动生成工具的图形界面的方法。     

MOAS 柴油降凝剂的研究

介绍了柴油降凝剂ＭＯＡＳ的合成，对抚顺石油二厂、三厂生产的几种柴油进行了降凝助滤效果的试验。对ＭＯＡＳ剂的合成条件、使用条件等影响因素以及与其它降凝剂的性能比较进行了考查，结果表明ＭＯＡＳ剂具有较好的应用价值。