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There are several forest operations involved in Eucalyptus timber harvesting. This study was carried out during brush-cutting; tree felling, bucking, delimbing, piling and manual extraction operations, with the following objectives: a) analyzing, ergonomically, two systems of brush-cutting: one manual and the other semi-mechanized, using two different machines; b) ergonomically evaluating three different brands of pruner machines used in delimbing felled trees. c) determining the feasible target of productivity as a function of ergonomic factors relevant to establish the time of resting pauses for workers in manual and semi-mechanized timber harvesting systems in mountainous terrain. Brush-cutting, either manual or semimechanized, is an activity carried out prior to timber harvesting. It is usually a hard work, with low productivity when compared with mechanized systems. Pruner machines have been used by forest companies, due to the great possibilities to improve productivity, quality and the health of workers. Ergonomics is a discipline that promotes the adequacy of work to the physical and mental characteristics of human beings, seeking to design production systems and products considering relevant aspects, including social, organizational and environmental factors. Companies should consider the ergonomic factor in the determination of daily worker production targets.  相似文献   
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Head canting, a lateral shift of the head toward the shoulder axis, was examined in 1498 figures in the complete works of 11 painters from the XIV to the XX century: Martini, van Eyck Hubert and Jan, Holbein, Carracci, Velazquez, Rembrandt, Degas, Cèzanne, Klimt, and Modigliani. All figures (up to 9 in any one painting) that were not in complete profile and that were not depicted bowing or shifting their bodies were selected for analysis. Our analysis found a higher frequency (49%) of head canting in paintings than previously reported in naturalistic settings. Head canting was significantly higher in female figures than male figures. If a figure's head was facing laterally, head canting was more likely to be to the contralateral side. Head canting was lower in older figures than in children, youths, and adults. The highest level of head canting was seen in religious and mythological figures. Head canting was lower in figures of artists and professionals and virtually absent in depictions of nobles. Figures in pose were depicted with less head canting than those in natural settings. Head canting was lower in figures gazing toward the observer. Single-figure portraits head canted less than subjects in multiple-figure paintings. Author analysis revealed that head canting was pronounced in painters of religious subjects and in modern painters, whereas its degree was reduced in official portrait painters. These results are discussed in terms of dominance theory.  相似文献   
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The use of boiler wood-fired is fairly common equipment utilized in steam generation for energy production in small industries. The boiler activities are considered dangerous and heavy, mainly due to risks of explosions and the lack of mechanization of the process. This study assessed the burden of physical labor that operators of boilers are subjected during the workday. Assessment of these conditions was carried out through quantitative and qualitative measurements. A heart rate monitor, a wet-bulb globe thermometer (WBGT), a tape-measure and a digital infrared camera were the instruments used to collect the quantitative data. The Nordic Questionnaire and the Painful Areas Diagram were used to relate the health problems of the boiler operator with activity. With study, was concluded that the boiler activity may cause pains in the body of intensity different, muscle fatigue and diseases due to excessive weight and the exposure to heat. The research contributed to improve the boiler operator's workplace and working conditions.  相似文献   
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This research article explores the lived‐in and lived‐through experiences of Indian women entrepreneurs in New Zealand in the context of ethnic entrepreneurship. Through a four‐stage model emerging from qualitative interviews, the article illuminates the bittersweet entrepreneurial process of ethnic minority migrant women. The four stages are: the low permeability for entry into the job market for ethnic minority migrant women; underemployment; setting up a micro‐enterprise and expanding the business and creating employment for others, primarily co‐ethnics as well as an expanding customer base. A combination of factors ranging from perceived discrimination, low self esteem and feelings of being devalued, to ethnic networks and lack of access/knowledge of government resources and the entry of women from Indian business families feed into each of the four stages of this model. The article offers an analysis of minority voices, along with implications for future research.  相似文献   
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Embraced by their ethnicity and gender many migrant women have negotiated their own spaces in the host country. Yet, much of the literature on migrant women focuses on those who are struggling to make ends meet with low levels of education and how this defines the construction of the Other. We contribute to the limited scholarship in management research on professional migrant women by illustrating how transnational processes play out in the lived experience of professional migrant Indian women in New Zealand, and how they invoke agency in decentring Otherness. This qualitative study foregrounds the navigation of asymmetrical power relations and the strategic deployment of ethnicity, education and caste affiliation, when confronted with processes of exclusion in the labour market. We argue for the need to highlight narratives of professional migrant women which reflect the agency and articulation of their voices, thus reworking notions of the Other in transnational space.  相似文献   
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Companies have increasingly sought strategies that will ensure a more competitive position in the marketplace. Among these strategies adopted by companies include the health and welfare of the worker, factors currently valued by consumers, especially those of most demanding market. Thus, the postural analysis is of great importance and interest because it is the study of positioning related to body parts like head, torso and limbs, capable of producing loads that may be excessive or insufficient causing disturbances in the muscle skeletal system worker. The aim of this study was to perform a postural analysis of the main sectors of workers (slaughter, cutting room, special cuts, packaging and dispatch) of a typical refrigerator pig industry in Brazil during the execution of their daily activities as well as developing proposals to minimize and/or eliminate the diseases and accidents. The study followed the safety norms of Brazilian Ministry of Labor and Employment. The posture analysis used the OWAS (Ovako Working Posture Analyzing System) methodology. The postures assumed by workers in the sector of packaging were as the most in need of emergency and quick action.  相似文献   
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The study analyzed the influence of time perspective, proactive coping strategies, perceived self-efficacy in affect regulation, divergent thinking and perceived quality of family communication on social well-being in a sample of 232 emerging adults. Social well-being showed positive correlations with proactive coping strategies, future-oriented time perspective, expression of positive emotions and regulation of negative emotions, divergent thinking, open communication with parents. A problematic family communication and a present-oriented time perspective were negatively correlated with social well-being. A forward Ridge step-wise regression model was conducted, evidencing four significant positive predictors of social well-being: proactive coping, perceived efficacy in affect regulation and open communication with parents; on the contrary, present oriented time perspective contributes significantly but negatively to social well-being.  相似文献   
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