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31.
Over the last few decades radio has becomeone of the primary means of mass communication in Latin America, able to reach euen the remotest rural populations because of the transistor. Colombia, where ninety-one percent of the homes in the seven largest cities have at least one radio, has also been heavily impacted by this modern technological phenomenon, Elssy Bonilla de Ramos focuses on radio advertising as a means of characterizing the relationship between radio and the Colombian economic sector. She argues that private companies who own most of the country's stations and networks influence programming and advertising in order to widely promote products which they produce. She believes that in many cases these products are not necessary to the consumers'well-being but are advertised in a way to make them more desirable. The authorgives a brief history of commercial radio in Colombia during the last fifty years, stating that early in its development programming underwent significant changes in order to capture an expanded audience. Comedy, sports, news, soap operas, classical and popular music, and quiz shows soon dominated the airways to the exclusion of programming that could play a role in the political, social and economic development of the country. She contends that industries that owned radio were intent on training for consumption and she uses a week's sample of programming and advertising to illustrate her point.  相似文献   
32.
In this article, we establish strong consistency of the ridge estimates using extended results for the strong consistency of the least squares estimates in multiple regression models which discard the usual assumption of null mean value for the errors and only requires them to be i.i.d. with absolute moment of order r (0 < r ? 1).  相似文献   
33.
Social touch is essential for physical and emotional well-being. However, different meanings can be attributed to physical contact during social interactions and may generate bonding or avoidant behaviors. This personal and unique experience is not usually taken into account in health and social care services. The aim of this study is to produce a valid and reliable European Portuguese version of the Social Touch Questionnaire (STQ, Wilhelm et al. in Biol Psychol 58:181–202, 2001. doi: 10.1016/S0301-0511(01)00113-2). The STQ is a self-report questionnaire for adolescents and adults measuring behaviors and attitudes towards social touch. The original version was translated into European Portuguese using a forward-back translation process and its feasibility was examined. To evaluate the psychometric properties, a total of 242 Portuguese university students participated in the study (21.3 ± 3.8 years). The STQ was considered feasible, showed adequate internal consistency (Cronbach’s α = .734), and the test–retest correlation with the STQ items demonstrated a high concordance between the tests over a two-week interval (ICC = .990; n = 50). Validity tests were performed, comparing the total score of the STQ with that of the anxiety and avoidance subscales of the Social Interaction and Performance Anxiety and Avoidance Scale (SIPAAS). A very significant conceptual convergence was confirmed between the STQ and with the SIPAAS-Anxiety (r = .64; p < .0001) and with the SIPAAS-Avoidance (r = .59; p < .0001). The exploratory factor analysis, with Promax rotation, revealed 3 factors: dislike of physical touch, liking of familiar physical touch and liking of public physical touch (Cronbach’s alphas ranged from .68 to .75). Psychometric properties confirmed the adaptation of the STQ to the Portuguese culture. It is a reliable and valid self-report questionnaire and it appears to be a useful tool to assess behaviors and attitudes towards social touch.  相似文献   
34.
Adolescence is a relevant life stage in which to study a global well-being measure, health-related quality of life, in order to analyse the impact of important determinants in adolescents' health-related quality of life (e.g., the quality of family relationships). This study aimed to examine the impact of several family dimensions (parental affection, parental promotion of autonomy, family activities, adolescent disclosure, parental solicitation and parental knowledge) on adolescents' health-related quality of life. Additionally, this study investigated whether demographic variables (adolescents' gender and age) influenced health-related quality of life and moderated the relationship between family dimensions and health-related quality of life. The sample was composed of 14,825 adolescents, aged 13–14, 15–16, and 17–18, from the 2006 edition of Spain's Health Behaviour in School-aged Children study. The results showed that parental promotion of autonomy, family activities and especially parental affection were the most important dimensions influencing health-related quality of life. Boys reported higher health-related quality of life than girls, and younger adolescents reported higher health-related quality of life than older adolescents. The discussion explains how the aforementioned family dimensions encourage better health-related quality of life in adolescents.  相似文献   
35.
Pivotal in HIV/STD intervention and prevention is how individuals perceive risk. This article discusses how ethnotheory can be used to understand the underpinnings of risk perception from the subject's perspective. Ethnotheory's theoretical and methodological character extends present models used to explain sex-related HIV behaviors and provides insights into risk perception useful for the development of effective intervention strategies. Four detailed ethnographic excerpts from low-income African American and Mexican American men and women illustrate how people form perceptions of risk and how information gained through ethnotheory is useful in the design of culturally relevant interventions.  相似文献   
36.
MC Jackson   《Omega》1987,15(6)
This paper offers some thoughts on the present state of management science as a discipline and a profession, and considers possible developmental strategies. The growth of management science, and the optimism this engendered, was largely premised on the successful use of scientific methodology and quantitative techniques to solve a relatively narrow range of management problems. In the 1970s, however, this positivist/quantitative ‘traditional management science’ became subject to increasing critical assault from those who wanted to broaden the impact of the discipline. Alternative management science approaches were born—soft systems thinking, organisational cybernetics, critical management science—and succeeded in establishing themselves. The existence of these alternative strands of work, alongside traditional management science, raises important questions about the future development of the discipline and profession. In this paper four developmental possibilities are set down and examined to see what future prospects they hold out for management science. It is argued that three of these—the isolationist, imperialist and pragmatist strategies—would lead the discipline into a dead end. A pluralist option, however, offers excellent opportunities for successful, future development.  相似文献   
37.
"Puerto Rico provides an alternative destination for immigrants from the Spanish-speaking Caribbean because the culture is similar to that in the source country. In this study, we use the 1980 [U.S.] Census of Population to examine the importance of relative earnings and culture in the choice of destination. The main finding is the similar pattern of choice of location for immigrants from the Dominican Republic and Cuba. The more educated and more professional immigrants are found in either Puerto Rico or outside the enclave on the [U.S.] mainland. Within this group, those with less time remaining in the labor market and lower English ability are found in Puerto Rico. We find that not all differences in location decision are attributable to differences in reward structure by location."  相似文献   
38.
The purpose of this study was to determine the average time school children spend on computers and electronic games, the positions they assume, and any associated discomfort related to their use. A twenty three-point questionnaire was distributed to 476 children in first to eighth grade from three parochial schools in one of the New York City boroughs. The findings of this study suggest that children use the computer and electronic games differently than adults and that more boys than girls engage in electronic game playing. Results clearly indicated that children are experiencing discomfort from the use of computers or electronic games, and that the discomfort is largely concentrated in the neck region. Occupational therapy could be instrumental in terms of educating the children, their parents/guardians, and their teachers on proper body mechanics, applications of ergonomically suited workstations, and the use of rest/stretch breaks while engaged in computing and electronic game playing.  相似文献   
39.
This paper describes the GRASP computer aided design system for modelling and evaluating industrial robot workplaces. GRASP satisfies a range of simulation needs within the context of designing, implementing and operating industrial robotic systems. The GRASP software may be used to investigate robots operating by themselves or, more likely, as part of an integrated cell. Facilities within GRASP assist workplace layout, position and velocity evaluations, clash detection and co-ordination between items. A robot library exists and is being extended, and an embryo off-line programming facility has been used under restricted conditions. GRASP has been used to help solve a wide range of practical industrial robot problems and has proved itself technically, and also as an educational tool, by showing how a proposed system would operate. The paper describes the facilities within GRASP.  相似文献   
40.
This article presents an iterative six‐step risk analysis methodology based on hybrid Bayesian networks (BNs). In typical risk analysis, systems are usually modeled as discrete and Boolean variables with constant failure rates via fault trees. Nevertheless, in many cases, it is not possible to perform an efficient analysis using only discrete and Boolean variables. The approach put forward by the proposed methodology makes use of BNs and incorporates recent developments that facilitate the use of continuous variables whose values may have any probability distributions. Thus, this approach makes the methodology particularly useful in cases where the available data for quantification of hazardous events probabilities are scarce or nonexistent, there is dependence among events, or when nonbinary events are involved. The methodology is applied to the risk analysis of a regasification system of liquefied natural gas (LNG) on board an FSRU (floating, storage, and regasification unit). LNG is becoming an important energy source option and the world's capacity to produce LNG is surging. Large reserves of natural gas exist worldwide, particularly in areas where the resources exceed the demand. Thus, this natural gas is liquefied for shipping and the storage and regasification process usually occurs at onshore plants. However, a new option for LNG storage and regasification has been proposed: the FSRU. As very few FSRUs have been put into operation, relevant failure data on FSRU systems are scarce. The results show the usefulness of the proposed methodology for cases where the risk analysis must be performed under considerable uncertainty.  相似文献   
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