新型激光转影技术的研究与应用

随着经济的发展和人们生活水平的提高,对产品包装装潢材料及制作技术的要求也随之不断提高.不仅对其美观性能有新的要求,而且对其环保性能、经济适用性能等诸多综合性能都有了新的要求.     

The Keisho1 of Development Technology: The Case of the Japanese Aircraft Industry

In many respects, development of highly innovative products such as fighter aircraft comes down to a quest for technological superiority. If such products lack best-in-class technologies, they face almost certain defeat at the hands of the competition (or, in the case of fighter aircraft, the enemy). In addition to the latest and greatest technologies, however, this type of development effort must draw on the past. Takashi Nakayama explores the role that keisho—or inheritance—of development technology plays in the Japanese aircraft industry. He illustrates the concept of keisho through examples ranging from the projects that culminated in development of the famed Zero fighter aircraft during the 1930s to those that produced the FSX (recently renamed the F-2) support fighter during the 1990s. Drawing on these historical perspectives, he addresses three key questions regarding keisho. First, why do Japanese manufacturers insist on keisho of development technology, even in the development of the latest aircraft? Second, what does the term development technology mean? And finally, how is keisho of development technology to be carried out? He then presents two models to show how keisho of development technology is carried out under different circumstances. The term development technology refers to the tacit knowledge that each member of the organization brings to a development effort. In other words, development technology comprises fieldwork knowledge, which consists of intuition, experience, and analogy. In essence, development technology represents the insight necessary for understanding the overall circumstances of a project and actively reframing or integrating various technologies to fit the needs of that project. During a development effort, each member of the organization internalizes this tacit knowledge (that is, development technology). By retaining and assigning these people to subsequent developments, an organization carries out the keisho of development technology. In this straight inheritance (optimal) model of keisho, engineers move from a completed project to another large-scale, next-generation project, continually using, refining, and enhancing the tacit knowledge shared by all members of the organization. The result is successive generations of new, excellent products. In intermediary inheritance (the minimal requisite keisho model), the core of development technology is inherited through various medium-scale intermediate projects, rather than directly from one large-scale project to the next.     

The Impact of Trade Unions on the Diffusion of Technology: The Case of NC Machine Tools

This paper reports the results from an econometric analysis of the impact of unionism on the diffusion of technology. It is found that the extent of unionism does not have any significant influence on the diffusion rate of NC machine tools in the US engineering industries in the period of 1979-83.     

激光扫描技术发展分析

随着热可逆记录介质应用范围的日益扩大,如何提高热可逆记录介质的耐久性和在其上进行图像记录或擦除的效率引起了业界的关注,同时,对在热可逆记录介质上进行激光扫描的技术研究也在深入进行中。本文首先介绍了传统的激光扫描控制方法,然后展示通过改变施加的激光光强分布或激光扫描方式的新型技术,这些新的技术有效地减少了在图像记录和擦除过程中对热可逆记录介质的能量积累,提高了热可逆记录介质的耐久性和激光扫描的速度。     

故障诊断技术应用两例

介绍了两例大庆炼化公司储运厂应用故障诊断技术，通过振动分析，判断出因为设备转子支撑件损坏、碰摩，以及设备底座、基础刚性不足而引起的故障。     

Valuing New Urbanism: The Case of Kentlands

This study assesses the impact of new urbanism on single-family home prices. Specifically, we use Duany and Plater-Zyberk's traditional neighborhood development (TND) of Kentlands and surrounding conventional subdivisions to estimate the premium, if any, that single-family homeowners are willing to pay to reside in a community with new urbanist features. Using data on 2,061 single-family home transactions and several hedonic price models, the empirical evidence reveals that consumers are willing to pay a premium to locate in Kentlands.     

The Value of Federal Sponsorship: The Case of Freddie Mac

The Federal Housing Enterprises Financial Safety and Soundness Act of 1992 attempts to limit the risk borne by the taxpayer due to federal sponsorship of the Federal Home Loan Mortgage Corporation (FHLMC) and the Federal National Mortgage Association by: (1) controlling their range of activities; (2) requiring a level of capital sufficient to absorb substantial losses; and (3) providing a mechanism for closure if capital is insufficient. This article estimates the impact of the capital standards on the value to the FHLMC of federal sponsorship. Although FHLMC's level of capital exceeds requirements, the federal government still bears a nontrivial portion of the FHLMC's risk.     

苏丹37区易漏地层钻井技术探讨

在Mishmish区块,油藏埋藏相对较深,地层压力高,中上部地层软硬交错,缩径严重,容易导致卡钻的严重后果,所以必须采用高密度来平衡地层压力,确保安全钻进。但是,在高密度条件下,机械钻速相对较低,容易发生井漏、卡钻等复杂事故,导致钻井周期延长,研究高密度条件下提高钻进速度有较重要的现实意义。     

Antitrust Versus Regulatory Merger Review: The Case of Electricity

This paper focuses on the implications of multi-agency review of electricity mergers. It highlights fundamental differences between regulatory and antitrust merger enforcement procedures–ranging from standards of review to data collection, economic analysis, and remedies. Such disparities potentially introduce costly and potentially conflicting redundancy into the merger review process. Illustrative examples are drawn from a number of cases, including apparent inconsistencies across applicant-filed analyses in FERC merger cases. Absent the delegation of competition analysis to the antitrust agencies, the paper makes the case for harmonizing review across regulators and antitrust enforcers.     

Stock Price and Management Changes: The Case of REITs

This paper examines the relationship between a Real Estate Investment Trust's (REIT's) stock returns and top management changes. The results indicate an inverse relationship between the probability of a management change and a REIT's recent stock price performance. This is consistent with internal monitoring of management activities by the board of directors, other top managers, or large block shareholders.     

Antitrust and Sales-Below-Cost Laws: The Case of Retail Gasoline

Numerous states have sales-below-cost (SBC) laws, often directed at specific products such as gasoline. Potential violations of state SBC laws occur when prices are less than the seller's cost of doing business, or some proxy thereof. The most commonly stated purpose of these laws is to protect small independent firms from predation by larger firms. This study offers empirical evidence on the impact of SBC laws on the retail gasoline market. The result indicate that SBC laws directed specifically at the retail gasoline market have resulted in higher retail margins.     

Zoning and Industrial Land Values: The Case of Philadelphia

This paper examines the market effects of zoning. Using the hedonic framework, we perform an empirical analysis that shows that lots zoned for industrial use in our study area are associated with a 58% price discount. The paper highlights the outcome of static zoning policies in a dynamic world. As the demand for industrial land in Philadelphia declined (resulting in vacancies), prices fell, but zoning was slow to adjust, therefore land conversion did not occur to re-equilibrate.     

上市公司财务质量评价——以浙江省信息技术业为例

在信息技术业的快速发展和长三角区域合作的大背景下,对于浙江省信息技术业上市公司财务质量进行研究具有理论和现实意义。本文以2017年浙江省信息技术业上市公司的财务报告资料的数据作为样本,选取因子分析法来实证分析其财务质量状况,在实证结果的基础上分析其中的问题和提出相应的建议。