电子膨胀阀在冷水机中的应用改进

电子膨胀阀在冷水机系统中一般作为控制过热度的工具,用于调整系统的效率及控制系统制冷输出,但是往往由于受到过热度限制而不能达到理想的温度控制,本文中将电子膨胀阀作为旁通阀使用,利用热力膨胀阀自主调整过热度,达到了比较理想且稳定的控制效果。     

Cyclists' helmet usage and characteristics in central and southern Malawi: a cross-sectional study

The objective of this study was to determine the prevalence of, and factors associated with, bicycle helmet usage in southern and central Malawi. This study was across-sectional observation of public behaviour. The urban and rural roadways in southern and central Malawi were studied during the dry season. In total, 1900 bicyclists were observed along the roadways of southern and central Malawi over a four-day period. Observer ascertainment of cyclists' helmet status, approximate age, sex and bicycle operator or passenger status were measured. Of the 1900 cyclists observed, no cyclist was identified as wearing a helmet (exact 95% CI: 0.0–0.2%). There was no variation by age, sex or operator/passenger status. Nearly, 91.5% of observed cyclists were males and 87.7% were operating the bicycle. The sizeable majority of male cyclists were classified as young adults from adolescence to 25 years old (47.2%) or adults over age 25 (44.9%); 7.9% of male cyclists were pre-adolescent. Passengers were more likely to be female than operators (39.1% versus 4.2%), though, even for passengers, a higher proportion were males than females (p < 0.001). In Malawi, helmet usage is so rare as to be non-existent. This suggests an opportunity for significant improvement. Based on the observed cyclists' characteristics, interventions should be targeted to adult and young adult males.     

Modeling the effect of self-efficacy on game usage and purchase behavior

This research models the relationship between self-efficacy, game purchase and usage. Four-hundred and ninety three consumers responded to a questionnaire. We deployed confirmatory factors analysis (CFA) and structural equation modeling (SEM) across 4 game types; original model (all games) and alternative models, Sports/Simulation/Driving, Role Playing Game/Massively Multiplayer Online Role-Playing Game/Strategy and Action/Adventure/Fighting. The impact of self-efficacy on usage and purchase was modeled both individually and simultaneously. For individual effects; models had adequate fit with Sports/Simulation/Driving showing an impact between self-efficacy on game usage and purchase. Our results showed no simultaneous relationship. We conclude that self-efficacy does impact usage or purchase but game type affects this relationship. Research implications are discussed.     

Comparing the impacts of Internet technology and national culture on online usage and purchase from a four-country perspective

The Internet has successfully generated an ever-expanding cohort of users for all its major concomitant activities, including information gathering, communications and transactions. So far no attempt has been made to validate whether such a success is so deep as to transcend national cultures. Nor any work has been conducted to compare the internationalisation¹ performances between online usage activities. The current study addresses these two research gaps from the perspective of four countries, i.e. Britain, Germany, Japan and Taiwan. Results show that although the technological forces have been quite successful in internationalising overall online usage activities, they succumb to the cultural forces as far as only the transactions activity, or more colloquially online purchase, is concerned. This indicates the relative difficulty in internationalising online purchase vis-à-vis other online usage activities. Further research on locating a series of step functions or kick-off time points regarding the development of online purchase is suggested.     

Assessment centers: A contrast of usage in diverse environments

The assessment center technique for sales force selection, promotion, career development, and training has received substantial attention. In addition to being cited as having substantial potential for more traditional sales management applications, the approach has been identified as well-suited for cross-cultural and multinational sales environments. This study appraises assessment center applications in two divergent settings: the United States and Europe. Expectations of greater awareness and utilization among European marketing managers were confirmed. © 1995 John Wiley & Sons, Inc.     

Exploration in product usage: A model of use innovativeness

In this article a conceptual model of use innovativeness is proposed. Use innovativeness is positioned within the broader innate innovativeness construct. Use innovativeness is conceptualized as a consumer's receptivity/attraction to and creativity with using products in new ways. Thus, use innovativeness focuses on the origination and production of new product uses rather than the adoption of new products. Relationships between innovativeness, use innovativeness, and use behaviors are explicated. In addition, issues in construct measurement and validation are also highlighted. Finally, a research agenda that flows from the proposed model is suggested. © 1994 John Wiley & Sons, Inc.     

Leisure provision and usage in recently redeveloped areas of Belfast

The provision of leisure facilities within housing developments and redevelopments has been one of the cornerstone features of urban redevelopment in Northern Ireland. This study has shown that there is a high use of leisure facilities by the 22–30 age group but not by the senior citizens in the sample. The cost of such facilities seems to be a deciding factor rather than provision, but apathy and lack of interest appear to be parallel determinants     

Warmer or cooler: the influence of ambient temperature on complex choices

Temperature affects human cognition, emotion, and behavior in important ways, yet exactly how ambient temperature exerts its influences on complex product choices remains largely unknown. In this research, we examine how relatively warm versus cool temperatures, both within a comfortable range and commonly experienced, can affect people’s decision quality in complex choices. In a series of three experiments, we demonstrate that warm (vs. cool) temperatures prompt affective processing, which then leads to better performance in complex choices. Consumers and companies need to take ambient temperature into account to create optimal environments for complex decision-making.     

The impact of adoption timing on new service usage and early disadoption

Post-adoption usage can be a crucial element in obtaining substantial revenues from new service introduction, especially when adopters display low usage levels or decide to disadopt the service altogether. Here, the authors specifically examine the effects of adoption timing on post-adoption usage and disadoption. Using a longitudinal, individual-level usage data set of 6296 adopters of a new telecom service, they show that the earliest adopters have lower initial usage levels than do later adopters. However, early adopters show increasing usage after adoption, whereas late adopters tend to decrease their usage over time. Also, disadoption rates are higher among later adopters.     

船用钢材的特点及影响其利用率的因素

随着我国船舶工业的快速发展,造船钢材的需求量愈来愈大,已成为钢材消耗大户之一。在造船成本中钢材所占成本的比例很大,因此,提高钢材利用率,降低消耗量对提高企业的经济效益具有很大的现实意义。武昌船厂在这一方面做了很大努力,取得了良好的实效,在此愿与同行共同探讨与交流。     

A study on the antecedents and consequences of satisfaction and dissatisfaction in web portal usage

Service Business - Unlike previous studies on web portal preference that focused mostly on satisfaction, this study considered both satisfaction and dissatisfaction. This study established that (1)...     

Feeling disconnected from others: The effects of ambient darkness on hedonic choice

This research documents a novel effect of ambient lighting on consumer choice. We propose and find that ambient darkness (vs. brightness) can result in consumers feeling disconnected from others. As a result, consumers become more authentic in their choices and they choose hedonic over utilitarian options because these choices reflect what they truly want (Study 1). Past research had suggested darkness increases hedonic choice by making choice less observable, but we find this effect emerges even when the choice is already anonymous and darkness cannot further increase anonymity. Rather, feeling disconnected from others and less weight to social norms heightened self-authenticity in darker (vs. brighter) surroundings (Study 2). When consumers are reminded of social connection, this difference is attenuated (Study 3). Thus, consumers making hedonic choices regulate their choices when reminded of their social connections. Implications of these findings and possible extensions are discussed.     

A comparative study of water usage in metered and unmetered households

The purpose of this research was to investigate the water usage in metered and unmetered households. The work also examined consumer attitudes towards water usage, including the belief of the need to use water more efficiently and the motivation to do so. Data were obtained by a self-administered questionnaire from 89 households in the Trafford area of Greater Manchester in the winter of 1995/6. This has provided information on ownership levels and age of water-using domestic appliances and outdoor water-using equipment. Although the survey showed some consumer awareness of eco-labelling, actual knowledge was low in both metered and unmetered households. Those respondents who thought water metering did, or would, encourage greater water efficiency were generally aware of how savings could be achieved. Metered households showed a stronger belief in the benefits of water economy. Twenty households each monitored their water usage for 7 consecutive days. A second questionnaire, aimed at clarifying practices, was then completed. This has provided information on total domestic water usage and variations in the components of water demand. Although there was a wide range of values in both metered and unmetered households, the frequency of use of appliances and equipment and per capita consumption were found to be related to household size. This showed larger households benefiting from an economy of scale. Metered households in this survey had a mean water consumption of 124·19 L/person/day compared with 137·28 L/person/day in unmetered households.     

Impact of safe community program on motorcyclists' safety with focus on helmet usage in 14 cities of IR Iran

The aim of this study was to evaluate the effectiveness of safe community interventions on motorcyclists' safety. Two cross sectional observations were conducted in 14 cities (five safe community practicing and nine safe community non-practicing cities) independently on 2005 and 2007. Ten percent of registered motorcycles were observed and interviewed (n=1114 in each observation). 87.9% used motorcycle for commercial purposes. All motorcyclists were male and mostly aged 18–29 years old. Death rate significantly rose from 122 to 254 per 100000 motorcyclists in Fars province since the first observation (p < 0.0001). Helmet usage rate was constant (13%). Recorded crashes increased from 16.4% to 23.1% in safe community setting (p < 0.0001). 11% carried more than one pillion. Heat disturbances, embarrassment, hearing blockage, and negligence were the most mentioned excuses for not using helmet. Law enforcement, public education, accessibility to helmets on discount rate, new legislation and, finally, access to new designed helmet were the most suggestions made by motorcyclists to promote helmet usage. No significant effect was noticed between two settings except in injury registration system in safe community. Community involvement in the safety programs could ensure sustainability of initiatives and continuity of interventions in safe communities.     

Evolution in the usage of localized appeals in Japanese and American print advertising

Based on global consumer culture theory, this empirical investigation examines how the usage of local appeals in Japanese and American advertising content has shifted over a period of nearly three decades. It replicates and improves upon Mueller’s investigation (Journal of Advertising Research, 1987, 27(3)). Content analysis determined the existence or absence of five traditionally Japanese appeals vs five traditionally Western appeals in 2005 issues of women’s, general interest, business and sports magazines published in each country. A total of 899 US ads and 853 Japanese ads were collected. Japanese advertisers appear to have turned to a rather more direct and persuasive selling approach, but continue to maintain a tradition of Japanese subtlety. American ads have shifted from a hard-hitting and aggressive strategy to a more benefit-orientated strategy with a distinctly softer touch. Appeals employed, however, were found to vary with the product category promoted. Overall, findings suggest that while Japanese advertising may have become somewhat more ‘American’, American advertising appears to have become significantly more ‘Japanese’. Possible future convergence between Eastern and Western advertising has implications for international marketers as they craft messages to appeal to these audiences.     

The Effects of Learning on Relationship Value in a Business Network Context

ABSTRACT

In today's intense global competition, a firm's ability to learn from its networks of business relationships is an important source of sustainable competitive advantage. Learning in a network of relationships involves a constellation of resource linkages among business partners tied together by interconnected resources. This has the potential of increasing the relationship value of a firm in terms of knowledge created through interactions among firms in the business network. Prior research has not yet examined the effects of learning in and through relationships in a business network context. Interdependence of firms in business networks gives rise to learning effects of adaptation and coordination that can have implications for relationship value. An empirical study of 215 business relationships from a network of nine high-technology companies in the United Kingdom shows that learning in and through relationships as a result of interactions and resource interdependencies in networks of relationships has a positive effect on a firm's relationship value. Furthermore, an understanding of the network context through interactions among firms facilitates learning and development of the firm's learning capabilities that enhance relationship value.     

经济衰退期的广告影响——国外研究述略

在经济衰退期间减少广告支出,将导致在衰退期间及以后的商品销量下降,且不能带来实质性的利润的增加。在经济衰退期间增加广告支出对企业的销量、市场份额、利润及品牌资产都有积极的作用,且其影响远大于经济扩张期和稳定期。增减广告支出的影响时效往往超出衰退期本身。     

Culture' Effects on Job Satisfaction and Performance in a Bicultural Context

Abstract

This study looks at culture' influence on employee job satisfaction and performance as it pertains to competitiveness. The researcher investigated whether INDSALES (a job satisfaction scale) is compatible with a Hispanic salesperson sample, focusing on automobile sales situations. The methodology relied heavily on field research and on an experimental design that applied different employee/manager combinations. Two hypotheses were proposed and subsequently tested. Results demonstrate that Hispanics and Anglo-Americans view job satisfaction somewhat differently. The study also found that there are significant differences in the levels of job satisfaction between mono-cultural and bicultural relationships. Managerial implications for better competitiveness are incorporated. Future research could investigate a different geographical region with Hispanic and Anglo automobile salespersons or other nations where different cultures work together