Constraints on Non-Newtonian Gravity From the Experiment on Neutron Quantum States in the Earth’s Gravitational Field

An upper limit to non-Newtonian attractive forces is obtained from the measurement of quantum states of neutrons in the Earth’s gravitational field. This limit improves the existing constraints in the nanometer range.     

纯铜薄板矩形盒拉深特性的试验研究

作为非回转对称成形试验研究的一部分,进行了大量的矩形盒拉深试验.指出纯铜薄板的各向异性对矩形盒拉深成形性的影响不十分显著.增大凸模形状参数rc/w,成形中法兰短边和曲边材料向凹模口的流入速度减小,曲边变形加工度增大,是使成形极限降低的原因之一.rc/w=0.1附近,极限成形高度hmax最大.     

Augmenting a Factorial Experiment When One Factor Is an Uncontrollable Random Variable: A Case Study

Process engineers at an automobile assembly plant wanted to develop a model for on-line process control in an assembly line. During an experiment to estimate the model, an uncontrollable variable was discovered to have a significant effect, but its values in the experiment were not representative of values in actual production. Through this case study, we present design criteria and assess sampling strategies for augmenting a factorial experiment to incorporate an additional factor that was found to be an uncontrollable independent normally distributed random variable. Our results demonstrate the potential improvement in on-line process control when experiments are augmented using these design criteria.     

泡沫镍吸声性能的研究

本文详细的研究了泡沫镍中高频的吸声性能。试验表明：泡沫镍是一种性能优良的吸声材料,在高频具有较高的吸声系数;通过吸声结构的设计可以提高其在低频的吸声性能。     

Corrosion Failure in the Sugar Industry: A Case Study

Pitting corrosion of structural steel used in an evaporator vessel for the sugar industry has been investigated. A significant number of inclusion stringers and a banded microstructure in the ordinary mild steel used were main reasons the pitting initiated. A low-carbon (0.08% C max) copper-bearing structural steel processed by a modified rolling practice that included intensive cross rolling was developed to minimize the incidence of pitting in such vessels.     

Safety Sampling: A Case Study

Safety sampling is a method by which management studies people and processes with the aim of making a safer workplace. This is accomplished by identifying, detecting, and reducing the unsafe acts people and processes exhibit prior to accidents. The purpose of this article is to present a case study of safety sampling.     

Reinterpreting Tradition to Innovate: The Case of Italian Haute Cuisine

The present research investigates the development of new products within cultural and creative industries resulting from the use of traditional elements. In particular, we analyse methods facilitating the recombination of traditional elements into new products. Accordingly, we conducted an inductive qualitative research, based on five case studies represented by Italian restaurants awarded with three Michelin stars. Findings reveal how traditional elements may be combined with elements coming from different and distant cultures. In addition, the elements of tradition may be the only source of innovation if atypical links are established among them. Our results mainly contribute to shed new light on the dynamics which allow to achieve the equilibrium between familiarity and novelty in cultural and creative industries where products suffer a rapid obsolescence. Finally, we advance the debate on tensions created by the inclusion of novelties in traditions by proposing method facilitating combinations.     

中国传统纹样在产品设计中的应用研究

分析了中国传统纹样的功能基础、符号意义、审美价值,并指出纹样的产生和发展与产品功能和审美的关系。论述了将中国传统纹样运用到产品设计中的基本方法和可行性,进而得出了2 种新的应用方法。提出了纹样的运用必须结合产品的造型和功能,及将中国传统纹样加以提炼并应用到产品设计中,对赋予产品文化内涵是可行的也是必要的。     

Studies on the Reduction of Coefficient of Variation: A Case Study

In a spinning mill, yarn is the final product. Linear density expressed in terms of count is one of the important characteristics of yarn. Because variability of textile strands increases as the linear density increases, the variability in the count is often measured in terms of coefficient of variation (CV)%. The yarn with a high CV% of count leads to a higher end breakage rate during the spinning and subsequent weaving/knitting operations, and consequently, results in lesser productivity and poorer appearance quality of the woven/knitted fabric. When this woven/knitted fabric is dyed, uneven shades are generated. Because the production of yarn involves processing of raw cotton in multimachines at multistages, possible sources that lead to a high CV% of count are many. Enrick's (1960) analysis procedure, which is based on the modification of the range method for analysis of variance, is used conventionally for detecting the stages where excessive “between-machine” differences are present. When the CV% of count is inflated due to the generation of systematic variation in any machine or introduction of high variability by any machine, this inflation remains undetected when using Enrick's procedure. The case study presented here demonstrates that a step-by-step analysis of linear densities of different stage-outputs starting from yarn to card sliver, using appropriate nested design models along with Duncan's multiple range test, is very useful in detecting all possible sources of a high CV% of count of yarn.     

企业过程再造：一个案例研究

企业过程再造是为了实现企业经营业绩的突破而对企业经营过程进行的根本性改造。实施过程再造常见的方法就是对企业现有经营过程进行分析和重新设计。但是这个出发点实际上极大地限制了对问题的解决,与过程再造的“根本性”的特点相矛盾。通过分析一个科技书店再造的案例,指出了实施过程再造时,既要从企业现有经营过程出发,又要超越这个范畴,从更广阔的视野寻找解决问题的方案。在案例分析的基础上,对企业过程再造理论进行了一     

FMS Implementation Procedure: A Case Study

Many manufacturing organizations are looking to Flexible'Manufacturing System technology for improvements in process flexibility. Faced with the need to produce, in less time, more customized products of highest quality and lowest cost, process flexibility is a growing concern of m a n y manufacturing organizations. In this paper, an eight step procedure for the proper installation of an FMS is presented. The purpose of the paper is to provide companies with a systematic approach for the installation of such manufacturing technologies as FMS.     

Lamellar Tearing: A Failure Case Study

A variety of materials are used in the Oil & Gas industry ranging from carbon steel, stainless steel to nickel alloys, etc. including non-metallic materials as well. Amongst these, carbon steel is the industry favorite because of many of its desirable attributes like machinability, weldability, availability, and cost. Wide use of carbon steel in the industry is also due to the presence of required properties for the specific application. In spite of carbon steel’s wide uses, poor workmanship, improper heat treatment, or negligent manufacturing processes can reduce its service life and also can lead to unexpected failures. One such failure case involves carbon steel plate meant for construction of a tank that failed by cracking immediately after the welding operation. A detailed investigation was carried out by means of visual examination, metallographic and chemical analysis, SEM, and EDAX analysis. Microstructure revealed banded pearlitic structure along with a number of inclusions, a few of which were elongated. In conclusion, stresses due to weld joint restraint, elongated inclusions, and high transverse direction stresses after welding resulted in lamellar tearing which propagated in the linear direction along the weld line.     

高吸油性树脂的研究进展

高吸油树脂是一种与传统吸油材料不同的新型功能高分子材料。综述了高吸油树脂国内外研究现状,主要介绍了高吸油树脂的吸油机理、主要合成和制备方法,概述了单体、引发剂、交联剂和分散剂对高吸油树脂吸油性能的影响,并对高吸油树脂的应用进行了总结。     

Measuring in Virtual Reality: A Case Study in Dentistry

For application specialists to accept virtual reality (VR) as a valid new measuring environment, we conducted several case studies. This paper describes a case study in dentistry in which VR is used to measure the length of the root canal of a tooth from processed tomography data. This paper shows the advantages of measuring in visualization space rather than in reality. We present a software framework aimed at the application specialist rather than the VR expert. Furthermore, the VR measuring technique is analyzed and compared to traditional measuring techniques for this particular application. We show that VR allows for intuitive measuring paradigms that are accurate and versatile alternatives to situations where traditional techniques are deficient.     

Quill Embroidery: A Case Study in the Mechanics of Biological Materials

In quill embroidery, leather goods are beautified with patterns stitched with stripes of the cortex of peacock feathers. Our new structural, geometric and mechanical data for the tail cover feathers of the peacock allow an understanding of the mechanisms of embroidery. This study serves as an example of how biological materials can be analyzed like engineering materials, giving insight into the optimization processes during evolution.     

文化创意产业下中国传统元素的应用研究

通过分析中国传统物质元素和精神元素的文化内涵,在"传统融入和创新应用"这个观念下,结合多个典型实例来阐述传统与时尚、民族性与国际性是和谐统一的。在此基础上,探寻中国传统元素在文化创意产业中的应用方式,总结中国文化创意产业一方面迫切需要发展中国元素,另一方面传承和发扬中国传统元素,创意产业成为必然之选。     

企业过程再造的一个实例研究

企业过程再造（BPR）是为了实现企业经营业绩上的突破而对企业经营过程进行的彻底的再思考和根本的再设计。它通过应用现代信息技术对企业经营过程、人力资源和组织结构进行重新设置,彻底消除企业原有劳动和部门分工对企业实现根本经营目标所形成的障碍。作业集成和组织扁平化是成功实施BPR的两个重要因素,也是BPR的难点。本文结合一个电话障碍维修业务再造的成功案例,分析了如何在BPR实施过程中将作业集成与组织扁平化二者有效地结合起来,共同实现经营过程的变革。提出的几点成功经验可供其它企业实施BPR时参考。     

基于实例的企业形象认知度研究

企业形象认知度的研究，是对企业所处的环境以及内外部对企业认知程度的调研，是进行企业形象设计的第一步。文中结合实际案例，着重就企业形象认知度研究的调查方法、调查对象、调查内容进行了详细的阐述，并分析了调研结果，为企业形象认知度研究提供了科学的参考方法。     

Tin Whiskers Formation on an Electronic Product: A Case Study

During qualification testing, a printed circuit board (PCB) of an electronic device for a drilling tool failed. The circuit board was exposed to a 120 h aging cycle at 180°C followed by 10 thermal cycles between −40 and 180°C before a failure was noticed. During inspection numerous white whiskers were observed over a lead-free solder surface. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometry (EDS) were used for microscopic examination and material characterization of the whiskers, end-cap metallization, and the solder materials. The tin whisker formation was attributed to the compressive stress in the tin solder material, which was caused by diffusion of the end cap metallization, formation of intermetallics, and thermal cycling of the soldered components. Recommendations are given to mitigate/control whisker formation on the lead-free solder materials.