Towards Multi-Faceted Test Cases Optimization

The target of software engineering is to produce high quality software product at low cost. Software testing is labour-intensive, ambiguous and error prone activity of software development. How to provide cost-effective strategies for software test cases optimization problem such as classification, minimization, selection, and prioritization has been one of the research focuses in software testing for a long time. Many researchers and academicians have addressed the effectiveness/fitness and optimization of test cases, and obtained many interesting results. However, one issue of paramount importance in software testing i.e. the intrinsic imprecise and uncertainty of test cases fitness, fitness parameters, multi-objective optimization, is left unaddressed. Test cases fitness depends on several parameters. Vagueness of fitness of test cases and their fitness parameters have created the uncertainty in test cases optimization. Cost and adequacy values are incorporated into multi-faceted optimization of test cases. This paper argues test cases optimization requires multi-faceted optimization in order to adequately cater realistic software testing. In this paper, authors have identified several parameters for test cases fitness and multiple objectives for test cases optimization. In addition above, authors have formulated the test cases optimization problem in three different ways using multi-faceted concept. These formulations can be used in future by authors and researchers.

Research and Development of Cemented Carbide Multifacet Drill for Drilling High Strength Steel

Aim To research on a solid cemented carbide multi facet drill for drilling high strength steel. Methods Assimilating some features of multi facet drill edge structures, through systematic drilling experiments, a new type of solid cemented carbide drill was developed and the drill geometry was optimized. Results With the new type drill,the drilling force decreases by 10%-20%, the drilling productivity (drilled holes per hour) increases by 2-3 times, and the drilling precision and surface finish increase by one level. Conclusion The new type drill possesses excellent drilling performance.

Multi-features Based Approach for Moving Shadow Detection

In the video-based surveillance application, moving shadows can affect the correct localization and detection of moving objects. This paper aims to present a method for shadow detection and suppression used for moving visual object detection. The major novelty of the shadow suppression is the integration of several features including photometric invariant color feature, motion edge feature, and spatial feature etc. By modifying process for false shadow detected, the averaging detection rate of moving object reaches above 90% in the test of Hall-Monitor sequence.

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) is a special reflecting Schmidt telescope. LAMOST’s special design allows both a large aperture (effective aperture of 3.6 m–4.9 m) and a wide field of view (FOV) (5°). It has an innovative active reflecting Schmidt configuration which continuously changes the mirror’s surface that adjusts during the observation process and combines thin deformable mirror active optics with segmented active optics. Its primary mirror (6.67m×6.05 m) and active Schmidt mirror (5.74m×4.40 m) are both segmented, and composed of 37 and 24 hexagonal sub-mirrors respectively. By using a parallel controllable fiber positioning technique, the focal surface of 1.75 m in diameter can accommodate 4000 optical fibers. Also, LAMOST has 16 spectrographs with 32 CCD cameras. LAMOST will be the telescope with the highest rate of spectral acquisition. As a national large scientific project, the LAMOST project was formally proposed in 1996, and approved by the Chinese government in 1997. The construction started in 2001, was completed in 2008 and passed the official acceptance in June 2009. The LAMOST pilot survey was started in October 2011 and the spectroscopic survey will launch in September 2012. Up to now, LAMOST has released more than 480 000 spectra of objects. LAMOST will make an important contribution to the study of the large-scale structure of the Universe, structure and evolution of the Galaxy, and cross-identification of multiwaveband properties in celestial objects.

A Comparative Study of Acute Hemodynamic Effects of Multi -site Cardiac Pacing in patients with cardiac function NYHA class ⅠtoⅡ without bundle branch block

Objective To compare the acute hemodynamic effects of five different pacing modes in patients with cardiac function NYHA class Ⅰ to Ⅱ without bundle branch block (BBB). Methods This study included 12 patients (SSS 7, Ⅲ°AVB 5) undergoing pacemaker implantation. Right ventricular apex (RVA), right ventricular outflow tract (RVOT), right ventricular bifocal (RV-Bi), left ventricular base (LVB) and bi -ventricular (Bi-Ⅴ) pacing at 60 -80 ppm were done in VVI mode prior to implantation of DDD pacemaker. The cardiac index (CI), mean pulmonary artery pressure (mPAP) and pulmonary capillary wedge pressure (PCWP) were measured with Swan - Ganz thermodilution catheter after 5 minutes of each pacing mode. Results (1) Comparing to pacing at RVA (CI: 2. 41± 0. 38 L/min per m2, PCWP: 16. 7 ±3.3 mmHg), the CI increased and the PCWP decreased significantly in pacing at RVOT(CI: 2. 63 ± 0.46, PCWP: 13. 8±2. 3), LVB(CI: 2. 78±0.52, PCWP: 14. 4±3.1), RV-Bi(CI: 2. 83±0.57, PCWP: 12. 8± 2. 5) and Bi -Ⅴ pacing (CI: 2. 94± 0.60, PCWP: 12. 7±2. 5), P < 0. 01, respectively. (2) The CI of RV-Bi and Bi-Ⅴ pacing was higher than that of RVOT and LVB pacing, the PCWP was lower, P < 0. 05, respectively. (3) There was no significant difference between RV - Bi pacing and Bi-Ⅴ pacing in CI and PCWP. Conclusion There is no significant difference between RV - Bi pacing and Bi -V pacing in the acute hemodynamic effects; however,dual - site pacing is much better than single site pacing in that aspect for patients with cardiac function NYHA class Ⅰ to Ⅱ without BBB. Among single site pacing, the RVOT and LVB pacing is better than RVA pacing in cardiac function.

Research on A Master - slave Multi - microcomputers Control System for Hollow Spindle Fancy Yarn Spinning Machine

In this paper, a successfully studied and developed master - slave muld - microcomputers control system based on PC - BUS for hollow spindle fancy yarn spinning machine, mainly Its overall scheme, software and hardware construction, is introduced. Spinning experiments show that the system achieves satisfactory result. This system can solve the diftkultles of mechatronical fusion between domestic hollow splndk fancy yarn spuming muchine and its microcomputer control technology.

On the Representation of Multi-layer Woven Structure

A quantitative method is developed to identify the structures of multi-layer woven fabric in this study. Six structural parameters are selected to represent the fabric structure. With some design criteria for the reinforcement of textile composites, the relationships among the structural parameters are derived for different binding patterns of the fabric structure. The conditions, which meet the requirements of structural cell stability,are also discussed.

Computer-aided Pattern Design of Multi-bar Warp Knitted Fabrics

To meet the development trend of multi-bar warp knit-ting machine towards high-speed,advanced technologyand computer control and the requirements of variousproducts with small quantity,there are many researcheson the computer-aided pattern design of multi-barwarp knitted fabrics.In terms of the special propertiesof the computer-aided pattern design of multi-barwarp knitted fabrics,the Object Oriented Program(OOP)programming-Object Windows class Library(OWL)programming is selected.According to thecharacters of the OWL programming,various functionsare defined.Pattern design and technical parameters canbe output,which offers a great convenience for the fac-tory.

MODS： A Novel Metaheuristic of Deterministic Swapping for the Multi-Objective Optimization of Combinatorials Problems

This paper states a new metaheuristic based on Deterministic Finite Automata （DFA） for the multi - objective optimization of combinatorial problems. First, a new DFA named Multi - Objective Deterministic Finite Automata （MDFA） is defined. MDFA allows the representation of the feasible solutions space of combinatorial problems. Second, it is defined and implemented a metaheuritic based on MDFA theory. It is named Metaheuristic of Deterministic Swapping （MODS）. MODS is a local search strategy that works using a MDFA. Due to this, MODS never take into account unfeasible solutions. Hence, it is not necessary to verify the problem constraints for a new solution found. Lastly, MODS is tested using well know instances of the Bi-Objective Traveling Salesman Problem （TSP） from TSPLIB. Its results were compared with eight Ant Colony inspired algorithms and two Genetic algorithms taken from the specialized literature. The comparison was made using metrics such as Spacing, Generational Distance, Inverse Generational Distance and No-Dominated Generation Vectors. In every case, the MODS results on the metrics were always better and in some of those cases, the superiority was 100%.

CA-LBM数值模型的应用研究

本文通过建立CA-LBM(格子玻尔兹曼-元胞自动机)耦合数值模型,模拟了多晶硅定向凝固过程中FET(小平面柱状晶-等轴晶转化)微观组织演变过程。结果表明:在碳杂质浓度达到临界值后,小平面界面前沿通过在SiC上形核实现向等轴晶生长转化;凝固过程中碳杂质浓度的高低决定等轴晶形态,高的碳杂质浓度等轴晶形态为热等轴枝晶,低的碳杂质浓度等轴晶的形态为等轴晶粒;多晶硅最终微观组织结构受形核密度和形核过冷度控制。

基于ICF构建特殊儿童融合教育导向多元安置服务:政策和理论架构与方法体系

目的 探讨基于ICF构建特殊儿童教育安置的多元教育安置服务体系和方法。方法 采用ICF的理论和方法、公共政策研究方法以及教育政策研究方法,分析特殊儿童教育安置的政策架构、理论与构建融合教育导向的多元安置体系的方法与内容。结果 在教育政策上,联合国《残疾人权利公约》和联合国教科文组织《确保教育包容性和公平性指南》都强调教育的权利,鼓励提供个别化教育支持服务和合理便利,以确保残疾学生能够有效参与教育。中国、欧盟和美国颁布了相关的法律和政策,鼓励融合教育的发展实施,将特殊儿童纳入普通教育系统,为他们提供与其他儿童相同的教育机会。发展特殊教育,教育安置针对那些需要额外支持和资源的特殊儿童,确保他们获得针对性的教育服务。政策强调要评估特殊儿童的具体需求,并根据这些需求提供个别化教育计划。结论 根据相关国际政策和有关国家的情况,基于ICF构建了特殊儿童教育安置服务的多元安置体系的内容与方法。

居民主导,多元协力——北村韩屋居住性历史街区活态治理经验与启示

存量时代城市更新中,居住性历史街区承载着传统风貌存续、街区活力再生、现代宜居优化等多重时代使命。居民主导、多元协力、活态治理是北村韩屋居住性历史街区保护与更新机制:居民主导—自下而上自主式更新是北村治理启动与传统风貌保存的基础;多元协力—政府自上而下结构性保护与政策扶持、专家技术协力、市民文化协力是北村治理发展及街区活力再生的动力;活态治理—居民主导、居民主体、居民自治是北村治理持续及现代宜居优化路径。汲取北村韩屋街区治理方法,存续经验,对我国居住性历史街区的更新治理具有借鉴意义。

独木龙舟神话的多重表达:从《清水江苗族独木龙舟文化研究》说开去

神话是古人借神之名创造的一种话语,是古人智识的浓缩,具有多重意涵。流传于清水江中游地区的苗族独木龙舟神话,既承载着当地苗族的族群记忆,体现区域社会运作的制度性逻辑,也见证着民族交流交往交融的不同层次和曲折历程。独木龙舟神话的构建与重构是当地苗族社会的政治、经济、文化、地理、时空、情感认知等多方力量协商平衡的结果,更是该社会有序化生存的情理表达。

Pressure Gradient Force,Saffman Lift,and Magnus Lift on the Fiber-like Particle in Fluid

Flher-like particle suspensions are common in both na-ture and industry, but there is little work reported on it.The forces acting on the fiber - like particle in fluid arestudied in this paper, and the Magnus lift, Saffman lift,pressure gradient force, and then the dynamics modelhave been received. The numerical study of the simpleshear flow past the cylinders shows that the particles ’motion is controlled by the vortex.

Crystal facet effect induced by different pretreatment of Cu_(2)O nanowire electrode for enhanced electrochemical CO_(2) reduction to C_(2+) products

Electrocatalytic CO_(2) conversion has been considered as a promising way to recycle CO_(2) and produce sustainable fuels and chemicals.However,the efficient and highly selective electrochemical reduction of CO_(2) directly into multi‐carbon(C_(2+))products remains a great challenge.Herein,we synthesized three type catalysts with different morphologies based on Cu_(2)O nanowires,and studied their morphology and crystal facet reconstruction during the pre‐reduction process.Benefiting from abundant exposure of Cu(100)crystal facet,the nanosheet structure derived Cu catalyst showed a high faradaic efficiency(FE)of 67.5%for C_(2+)products.Additionally,electrocatalytic CO_(2) reduction studies were carried out on Cu(100),Cu(110),and Cu(111)single crystal electrodes,which verified that Cu(100)crystal facets are favorable for the C_(2+)products in electrocatalytic CO_(2) reduction.Our work showed that catalysts would reconstruct during the CO_(2) reduction process and the importance in morphology and crystal facet control to obtain desired products.

公共意识融入宣传片创作方式的三种表现--以纽约公共图书馆和波士顿公共图书馆形象宣传片架设为例

公共图书馆作为与公众保持长期情感互动的文化支柱型机构,其公共意识并不局限于知识共享与技术开发层面,也反映在与公众建立联系的有效性和积极性上。互联网技术背景下,公共图书馆作为公共文化服务体系的重要组成部分,需要直面形象建构、信息传播方法的新挑战。本文从"宣传片"视角入手,围绕纽约公共图书馆和波士顿公共图书馆近年来的宣传片案例,讨论图书馆的公共意识融入具体宣传片创作后体现出的三组特征。新时期的公共图书馆宣传片不再是单向输出的"自我介绍",而成为一种视觉化的、与公众进行对话的途径。

基于SPOC的混合式学术英语教学设计与实践--以南京大学国际学术交流英语课程为例

文章通过融合SPOC在线课程与课堂教学,联通“线上学习”“线下基于项目的课堂面授”“线下课外实践”,设计混合式学术英语教学模式。基于南京大学开设的国际学术交流英语课程三个学期的实践,我们发现,该教学模式能有效发展学生的学术意识和多元能力,为学生今后用英语进行专业学习及国际学术交流奠定基础。

中国区域速度场多面函数拟合稀疏建模方法研究

分析多面函数建模中核函数结点选择存在的问题,探讨LASSO等变量选择及空间降维方法,在此基础上,提出多面函数拟合的稀疏建模方法和惩罚参数选取指标。该方法通过最小化正则化损失函数,实现模型参数估计与核函数结点筛选,所构建模型易于解释且具有较强的泛化能力。中国区域速度场建模结果显示,多种方案下的模型变量参数筛选保留率在19.42%~51.17%之间,外符合精度提升率达到3.29%~16.50%,表明该方法可有效降低模型结构复杂度并提高建模精度。

多元解纷机制与诉讼服务体系的协同研究

中国特色纠纷解决须应对“诉讼爆炸”映射出来的复杂的基层社会矛盾纠纷态势,回应人民群众高期待的解纷需求。多元解纷机制和诉讼服务体系的协同运行是纠纷解决的独创之路和应有之义。探究贵州省的实证经验,为建构中国特色解纷道路,从实然到应然的构想提供了示范性样本。理念上,从协同式的多元解纷基础架构出发,逐步升级为均等式的多元解纷服务标准,迈向兼容式的“诉调对接”衔接机制;路径上,多元解纷机制要整合各类非诉资源,利用司法确认程序做好两者衔接,进一步推动繁简分流的诉讼服务向纵深发展。