4,939 research outputs found
Customising Linguistics: Developing an Electronic Grammar Database for Teachers
This paper considers issues in customising descriptions of English grammar in the context of creating an electronic database for secondary school teachers in Hong Kong. In developing the database, we have aimed to incorporate insights from functional grammar and corpus linguistics while keeping the information accessible and relevant to teachers familiar only with traditional approaches to grammar. This has involved exploiting the advantages of hypertext, explicitly foregrounding pedagogical concerns and developing a metalanguage that will allow discussion of areas such as transitivity and theme without alienating the teacher-users. We illustrate the kinds of compromises that are necessary in order to match the linguistic information to the needs and existing knowledge of the teacher-users.published_or_final_versio
The effects of man-marking on work intensity in small-sided soccer games
The aim of this study was to examine the effect of manipulating defensive rules: with and without man-marking (MM and NMM) on exercise intensity in 3 vs. 3 small-sided games (SSGs). Twelve adolescent soccer players (age: 16.2 ± 0.7 years; body mass: 55.7 ± 6.4 kg; body height: 1.70 ± 0.07 m) participated in this repeated measures study. Each participant performed in four different SSGs formats: 3 vs. 3 MM with and without goals and 3 vs. 3 NMM with and without goals. Each SSG lasted 3 x 4 minutes interspersed with 4 minutes passive recovery. The percentage heart rate reserve (%HRreserve) was recorded continuously during SSG and session-rating of perceived exertion (session-RPE) after the SSG. MANOVA showed that defensive rule had significant effects on intensity (F = 5.37, p < 0.01). Specifically, MM during SSG induced significantly higher %HRreserve compared to NMM (Goal: 80.5 vs. 75.7%; No goal: 80.5 vs. 76.1%; p < 0.05, effect size = 0.91-1.06), irrespective of the presence or absence of goals. However, only MM with the presence of goals induced significant higher session-RPE compared to NMM (7.1 vs. 6.0; p < 0.05, effect size = 1.36), whereas no difference in session-RPE was observed
between MM and NMM (7.4 vs. 6.9; p > 0.05, effect size
= 0.63) when no goals were used. Higher intra-class reliability and lower coefficient of variation values were also reported in MM as compared to NMM. This study in youth soccer players shows there is ~4.5% increase in heart rate response by using the man-marking in 3 vs. 3 SSG thus the intensity of SSG can be significantly increased when using man-marking tactics
Wary Managers: Unfavorable Environments, Perceived Vulnerability, and the Development of Trust in Foreign Enterprises in China
Vulnerability is salient among international managers, who tend to be wary when operating in transition economies like China. Systematic research is lacking, though, on how the local environment influences foreign managers’ perception of vulnerability, and how foreign managers can develop trust even when their perceived vulnerability is high. We conducted in-depth case studies of two foreign-controlled enterprises in China, and developed a theoretical model that links perceptions of the macro-level environment to micro-level management. Our results illustrate the antecedents and consequences of perceived vulnerability and the processes of trust building in unfavorable environments. Through comparative analysis of the two cases, we found that the foreign managers’ perceived vulnerability was shaped by the institutional, technological, and market conditions of the local environment, and we learned how this perceived vulnerability influenced their trust in the local workforce and the joint investment in formal and social control they used in building trust. The effect of perceived vulnerability on trust was moderated over time when the implementation of control was combined with active investments in trust, which led to behavioral changes on the part of the local employees, which in turn increased their trustworthiness. The implications of these findings are discussed
Feasibility and concept study to convert the NASA/AMES vertical motion simulator to a helicopter simulator
The conceptual design for converting the vertical motion simulator (VMS) to a multi-purpose aircraft and helicopter simulator is presented. A unique, high performance four degrees of freedom (DOF) motion system was developed to permanently replace the present six DOF synergistic system. The new four DOF system has the following outstanding features: (1) will integrate with the two large VMS translational modes and their associated subsystems; (2) can be converted from helicopter to fixed-wing aircraft simulation through software changes only; (3) interfaces with an advanced cab/visual display system of large dimensions; (4) makes maximum use of proven techniques, convenient materials and off-the-shelf components; (5) will operate within the existing building envelope without modifications; (6) can be built within the specified weight limit and avoid compromising VMS performance; (7) provides maximum performance with a minimum of power consumption; (8) simple design minimizes coupling between motions and maximizes reliability; and (9) can be built within existing budgetary figures
Patterns of knowledge and condom use among population groups: Results from the 2005 Ethiopian Behavioral Surveillance Surveys on HIV
Background: Behavioral surveys help interpret the magnitude of HIV/AIDS. We analyzed indicators of knowledge on HIV/AIDS and condom use among different groups of populations selected for behavioral surveillance in Ethiopia. Methods: We used HIV/AIDS Behavioural Surveillance Surveys (BSS) data collected from ten target groups in Ethiopia. These were female sex workers, military personnel, police force, pastoralists, long distance truck drivers, intercity bus drivers, road construction workers, teachers, factory workers and ANC catchment populations. Results: Data from 14,524 individuals were analyzed. The majority were male (63.6%). Knowledge of the three preventive methods (abstinence, faithfulness and consistent condom use), misconceptions and comprehensive knowledge was 57%, 75% and 18.5%, respectively. Female sex workers and the defence force showed positive results in using condom during last sexual encounter and did so consistently with non regular sexual partners and paying partners. Women, pastoralists and the illiterate were negatively impacted. Conclusion: Inadequate and incorrect knowledge on HIV/AIDS was observed with special deficiency among the underserved groups such as pastoralists. Women and the older age group were found to be at a disadvantage. The findings indicate the need to expand prevention activities to hard-to-reach groups and such a certain specific population segments. Population groups such as female sex workers and the defense force that were known to be severely affected by the epidemic and are focus of HIV/AIDS interventions showed positive behaviors. Although this s encouraging, considerable proportion of the study groups did not use condom during sex with non regular partners. This underscores the importance of intensifying interventions across all groups and extended to their localities
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