一种新型高速数字锁相环的研究

本文针对传统方法实现的数字锁相环(DPLL)工作速率低的问题,通过对一种典型的DPLL的分析,找出影响其工作速率的主要因素,研究并提出了一种全新的高速实现方法,并在实验室进行了数据传输位同步提取实验。     

Exchange Rate Pass‐through: The Role of Regime Changes

We consider the effect on the degree of exchange rate pass‐through of the exchange rate regime in operation. We test the hypothesis that pass‐through will be lower under a float as firms may be reluctant to pass appreciations or depreciations on to their customers when there is a strong chance that they will be subsequently reversed. Taylor’s hypothesis that pass‐through will be lower in a low‐inflation environment is also considered. Both hypotheses are assessed in relation to the price of manufactured imports into New Zealand and we find that, whereas the shift to a float dramatically lowered the degree of pass‐through, the later shift to a low‐inflation regime has no significant additional effect on the pass‐through relationship.     

A network experiment in continuous time: The influence of link costs

In recent work on non-cooperative network formation star-shaped networks play an important role. In a particular theoretical model of Bala and Goyal (2000) center-sponsored stars are the only strict Nash networks. In testing this theoretical model, Falk and Kosfeld (2003) do not find experimental evidence that players select the center-sponsored star. Based on a slight modification of Bala and Goyal’s model, we design a network formation experiment in which, depending on link costs, periphery-sponsored stars and the empty network are the only strict Nash networks. We observe that almost all groups not only reach a strict Nash network once but also switch the center player in periphery-sponsored stars several times. The main innovation in our experiment is to use a continuous time framework which we believe to be a more realistic setting to study behavior in network formation situations and which makes coordination on stars much easier than simultaneous strategy adaptation in discrete time. Electronic Supplementary Material Supplementary material is available in the online version of this article at http://dx.doi.org/10.1007/s10683-006-9125-1. JEL Classification C72 · C92 · D81     

Financial Market Fragmentation and Reforms in Ghana, Malawi, Nigeria, and Tanzania

This article reports the findings from surveys of formal andinformal institutions and their clients in Ghana, Malawi, Nigeria,and Tanzania. It investigates the hypothesis that reformingfinancially repressive policies would not be sufficient to overcomefragmentation of financial markets because of structural andinstitutional barriers to interactions across different marketsegments. The four countries have substantially fragmented financialmarkets, with weak linkages between formal and informal segmentsand interest rate differentials that cannot be adequately explainedby differences in costs and risks. Nevertheless, the relativelylow transaction costs and loan losses of informal institutionsindicate that they provide a reasonably efficient solution toinformation, transaction cost, and enforcement problems thatexclude their clients from access to formal banking services.The findings imply that financial liberalization and bank restructuringin the African context should be accompanied by complementarymeasures to address institutional and structural problems, suchas contract enforcement and information availability, and toimprove the integration of informal and formal financial markets.     

Country‐Specific Profiles of Performance Management in China,Germany, and the United States—An Empirical Test

The vast majority of the literature on performance management (PM) chooses a contextual perspective, focusing on the cross‐country comparison of single elements of the PM system. Simultaneously, a conceptual basis and an encompassing comprehension of country‐specific peculiarities are lacking. Based on a suggested conceptualization of the elements of PM (criteria, actors, methods, purposes, feedback) and hypotheses developed from an encompassing literature review, the authors present empirical findings from a quantitative study including 167 managers from multinational enterprise (MNE) subsidiaries in three culturally and institutionally diverse major economies (Germany, United States, and China). Contrary to what the literature suggests about the local peculiarities of PM, the results of the present study show significant country‐specific differences in only 6 out of 16 investigated PM features. Furthermore, the analytical categorization of “Western” countries versus China cannot be empirically confirmed. In contrast, more similarities between China and Germany than between Germany and the United States are identified. © 2014 Wiley Periodicals, Inc.     

Dynamic talent management capabilities and organizational agility—A qualitative exploration

Today's business environment is becoming increasingly dynamic, and the concept of agility is gaining attention in the corporate world and in academia. The objective of our research is to explain how talent management (TM) can shape talents as key human resources, according to company-specific agility needs, and thus contribute to gaining competitive advantage in dynamic firm environments. We approach this task by viewing it from the perspective of dynamic capabilities. A total of 24 semistructured interviews were conducted with senior TM professionals working in German companies differing in terms of size, age, structure, industry, and ownership. As a result, we identified three different types of dynamic TM capabilities promoting organizational agility to various extents. By rooting our qualitative study in the research fields of TM and agility in the under-researched theoretical realm of dynamic capabilities, we contribute to the theoretical as well as the empirical discussion by addressing the specific challenges of an increasingly dynamic environment. As a result, we provide a contextualized viewpoint from which to explain the process inherent in dynamic TM capabilities that continuously shape talent and organizational agility.     

New Product Development Practices and Early‐Stage Firms: Two In‐Depth Case Studies

New product development practices (NPD) have been well studied for decades in large, established companies. Implementation of best practices such as predevelopment market planning and cross‐functional teams have been positively correlated with product and project success over a variety of measures. However, for small new ventures, field research into ground‐level adoption of NPD practices is lacking. Because of the risks associated with missteps in new product development and the potential for firm failure, understanding NPD within the new venture context is critical. Through in‐depth case research, this paper investigates two successful physical product‐based early‐stage firms' development processes versus large established firm norms. The research focuses on the start‐up adoption of commonly prescribed management processes to improve NPD, such as cross‐functional teams, use of market planning during innovation development, and the use of structured processes to guide the development team. This research has several theoretical implications. The first finding is that in comparing the innovation processes of these firms to large, established firms, the study found several key differences from the large firm paradigm. These differences in development approach from what is prescribed for large, established firms are driven by necessity from a scarcity of resources. These new firms simply did not have the resources (financial or human) to create multi‐ or cross‐functional teams or organizations in the traditional sense for their first product. Use of virtual resources was pervasive. Founders also played multiple roles concurrently in the organization, as opposed to relying on functional departments so common in large firms. The NPD process used by both firms was informal—much more skeletal than commonly recommended structured processes. The data indicated that these firms put less focus on managing the process and more emphasis on managing their goals (the main driver being getting the first product to market). In addition to little or no written procedures being used, development meetings did not run to specific paper‐based deliverables or defined steps. In terms of market and user insight, these activities were primarily performed inside the core team—using methods that again were distinctive in their approach. What drove a project to completion was relying on team experience or a “learn as you go approach.” Again, the driver for this type of truncated market research approach was a lack of resources and need to increase the project's speed‐to‐market. Both firms in our study were highly successful, from not only an NPD efficiency standpoint but also effectiveness. The second broad finding we draw from this work is that there are lessons to be learned from start‐ups for large, established firms seeking ever‐increasing efficiency. We have found that small empowered teams leading projects substantial in scope can be extremely effective when roles are expanded, decision power is ground‐level, and there is little emphasis on defined processes. This exploratory research highlights the unique aspects of NPD within small early‐stage firms, and highlights areas of further research and management implications for both small new ventures and large established firms seeking to increase NPD efficiency and effectiveness.     

Does Multinationality Affect the Propensity to Innovate? An Analysis of the Third UK Community Innovation Survey

The paper is developed at the interface between internationalization and innovation studies. It utilizes data on innovation from the UK Community Innovation Surveys 3 and 2 (CIS3 and CIS2) to assess whether multinationality affects the innovation propensity of surveyed enterprises. The indicators of innovation propensity—our dependent variables—are taken from the following CIS sets of variables: innovation outputs; innovation inputs; innovation outcomes (patent applications); innovation continuity/sustainability. The latter element is considered to be the ability of the enterprise to sustain innovation over a long period of time and the relevant variable is derived from both CIS3 and 2 data. This allows the paper to introduce dynamic elements into the analysis. Four hypotheses are developed and tested. Our main hypothesis states that multinationality per se (i.e. being part of a multinational company network) affects the propensity to innovate. We also test for three sub‐hypotheses related to characteristics of multinationality: belonging to a group vs being independent; degree of multinationality; being part of a foreign vs domestic multinational. The results show that all those CIS enterprises that belong to a multinational corporation—whether UK or foreign—are more likely to exhibit innovation propensity; they are also more likely to engage in innovation activities on a continuous basis.     

PAALiativ: Technik als Chance?

Assistenztechnologie im Wohnumfeld — Die Terminalphase des Lebens in h?uslicher Umgebung verbringen zu k?nnen entspricht dem Wunsch der meisten Menschen. In Oldenburg startete mit PAALiativ ein Projekt, mit dem exemplarisch nach M?glichkeiten der technischen Unterstützung für ein selbstbestimmtes Leben Schwerstkranker gesucht wird.