The Effect of Network and Infrastructural Variables on SPDY's Performance

HTTP is a successful Internet technology on top of which a lot of the web resides. However, limitations with its current specification, i.e. HTTP/1.1, have encouraged some to look for the next generation of HTTP. In SPDY, Google has come up with such a proposal that has growing community acceptance, especially after being adopted by the IETF HTTPbis-WG as the basis for HTTP/2.0. SPDY has the potential to greatly improve web experience with little deployment overhead. However, we still lack an understanding of its true potential in different environments. This paper seeks to resolve these issues, offering a comprehensive evaluation of SPDY's performance using extensive experiments. We identify the impact of network characteristics and website infrastructure on SPDY's potential page loading benefits, finding that these factors are decisive for SPDY and its optimal deployment strategy. Through this, we feed into the wider debate regarding HTTP/2.0, exploring the key aspects that impact the performance of this future protocol

The role of individual and social variables in task performance.

This paper reports on a data-based study in which we explored - as part of a larger-scale British-Hungarian research project - the effects of a number of affective and social variables on foreign language (L2) learners’ engagement in oral argumentative tasks. The assumption underlying the investigation was that students’ verbal behaviour in oral task situations is partly determined by a number of non-linguistic and non-cognitive factors whose examination may constitute a potentially fruitful extension of existing task-based research paradigms. The independent variables in the study included various aspects of L2 motivation and several factors characterizing the learner groups the participating students were members of (such as group cohesiveness and intermember relations), as well as the learners’ L2 proficiency and ‘willingness to communicate’ in their L1. The dependent variables involved objective measures of the students’ language output in two oral argumentative tasks (one in the learners’ L1, the other in their L2): the quantity of speech and the number of turns produced by the speakers. The results provide insights into the interrelationship of the multiple variables determining the learners’ task engagement, and suggest a multi-level construct whereby some independent variables only come into force when certain conditions have been met

The role of organizational and individual variables in aircraft maintenance performance

Aviation maintenance has been identified by the FAA as an area where better efficiency is needed to cope with ever increasing workloads. However, aviation maintenance has also been identified as one of the major causes of accidents. Consequently, if further efficiencies are to be achieved, they cannot come at the cost of reduced safety margins. The present study employed a safety climate approach to assist in the development of a model that can help to explain morale, psychological health, turnover intentions, and error in the aviation maintenance environment. An instrument called the Maintenance Environment Survey was developed and administered to 240 personnel responsible for maintenance of a large military helicopter fleet. Data collected through the survey were used to develop a structural model that predicted 45 per cent of the variance in psychological health, 67 per cent of the variance in morale, 27 per cent of the variance in turnover intentions, and 44 per cent of the variance in self-reported maintenance errors. The model shows the pathways through which organizational level and individual level variables can influence work outcomes and leads to suggestions for interventions that can help to improve maintenance efficiency

Meta-analyses of Post-acquisition Performance: Indications of Unidentified Moderators

Empirical research has not consistently identified antecedents for predicting post-acquisition performance. We employ meta-analytic techniques to empirically assess the impact of the most commonly researched antecedent variables on post-acquisition performance. We find robust results indicating that, on average and across the most commonly studied variables, acquiring firms’ performance does not positively change as a function of their acquisition activity, and is negatively affected to a modest extent. More importantly, our results indicate that unidentified variables may explain significant variance in post-acquisition performance, suggesting the need for additional theory development and changes to M&A research methods

Biological variables in forager fertility performance: a critique of Bongaarts' model

African Studies Center Working Paper No. 60During the period of the 1960s and 1970s, a considerable amount of scholarly energy was devoted to studying the process of "modernization." Scholars, particularly political scientists and anthropologists, theorized extensively over exactly what modernization was and debated how it could best be quantified and measured.1 By the 1980s, however, the very notion of the "modern," along with its antithesis, the "traditional" was falling out of favor. Indeed, by declaring the new era "post-modern," the academic avant-guard signaled that the concept of modernity had effectively been relegated to the past. The past, however, is the turf of historians, so perhaps now that the concept of modernity has become old-fashioned it is time for historians to take their turn at examining its meaning. This paper will approach the concept of the "modern" by examining the role of advertising in creating notions of modernity in independence-era Ghana. Ghana, at the time of independence in 1957, was a country of supreme optimism about the future. Not only did Ghanaians see themselves as being on the cutting edge politically (as the first sub-Saharan colony to achieve independence), but they also believed that independence would bring a new era of economic development and wealth. Ghana, as a country, was "going places." The new nation's optimism found many manifestations, but this paper will focus on only one aspect of this exuberance—representations of transportation as modernity in the advertisements and articles of Ghana's premier newspaper, the Daily Graphic. As stated before, early scholarship on modernization was concerned primarily with developing a way of measuring the demise of the traditional and the rise of the modern. Such studies focused on examining populations of "traditional" or "transitional" peoples to attempt to discern just how "modern" they had or had not become. What the previous studies did not consider, and what this paper seeks to examine, is exactly how modernity was presented to and by such populations. No single factor seems to represent modernity more than motion itself—be it actual movement across space or be it social and economic change. Indeed, Daniel Lerner, the prominent scholar of modernity, defined the key aspect of being modern as having... [TRUNCATED

Individual Differences in the Experience of Cognitive Workload

This study investigated the roles of four psychosocial variables – anxiety, conscientiousness, emotional intelligence, and Protestant work ethic – on subjective ratings of cognitive workload as measured by the Task Load Index (TLX) and the further connections between the four variables and TLX ratings of task performance. The four variables represented aspects of an underlying construct of elasticity versus rigidity in response to workload. Participants were 141 undergraduates who performed a vigilance task under different speeded conditions while working on a jigsaw puzzle for 90 minutes. Regression analysis showed that anxiety and emotional intelligence were the two variables most proximally related to TLX ratings. TLX ratings contributed to the prediction of performance on the puzzle, but not the vigilance task. Severity error bias was evident in some of the ratings. Although working in pairs improved performance, it also resulted in higher ratings of temporal demand and perceived performance pressure

Employee development and its effect on employee performance at KFC Restaurant Brands

Employees are a key element of the organisation. The success or failure of the organisation depends on employee performance. Therefore, organisations are investing huge amount of money on employee development. This paper analyses the theoretical framework and models related to employee development and its effect on employee performance. The key variables identified related to employee development and employee performance. Further discussion develops a proposed model which explains the relationship between employee development variables (employee learning, skill growth, self-directed, employee attitude) and employee performance variables Employee performance will impact on organisational effectiveness. The paper is divided into three parts. The introductory part provides a brief overview related to employee development and its effect on employee performance. The second part analyses the views and studies of past researchers related to employee development and employee performance. Finally, this paper presents the proposed model along with the discussion and conclusion

Incidence of anthropometric variables on the performance of top Optimist sailors

The aim of this study was to determine the anthropometric profile of top Optimist sailors to examine how anthropometric variables influence their performance, taking the wind conditions into account. The study comprised 180 sailors (158 males and 22 females) aged 11-15 years competing in the Optimist World Sailing Championship held in Las Palmas de Gran Canaria, Spain, from 23 July to 3 August 2003. A descriptive correlational design was used. Assessments were made before and during the championship. The variables studied were body weight, height, arm span, lengths, fat tissue, muscle tissue, somatotype and performance level, in relation to race finishing place. The mean characteristics presented by the Top Group (sailors ranked 1 to 45) were: body weight (48.3 ± 6.4 kg), height (159.9 ± 5.4 cm), arm span (167.4 ± 6.5 cm), trunk length (37.2 ± 3 cm), lower limb length (90.7 ± 3.9 cm), fat tissue (10.5 ± 1.6%), muscle tissue (45.5 ± 2.1%) and somatotype (endomorphy 2.4 ± 0.9; mesomorphy 4 ± 2.5 and ectomorphy 3.3 ± 0.9). A close relation was observed between finishing place and the variables of weight, height, age, arm span, lower limb length, upper arm girth, sum of skinfolds, muscle weight, bone weight and residual weight. Top sailors tend to be meso-ectomorphic, with significant values for muscle mass and linearity and low fat content

Effect of environmental variables on financial performance: the case of electrical industry

Nowadays, companies at the electrical industry have to meet numerous environmental requirements which involve a large increment in their costs. However, it is considered that these investments made by organizations may affect positively to their reputation and therefore to their profits. So the aim of this paper is to analyze the influence that some Environmental variables related to the emission and resource reductions have on the Financial Performance of the electrical firms through a data panel methodology. The sample was composed by 72 electrical companies over the world, during the period 2008-2010