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531.
Paul E. Spector Cary L. Cooper Juan I. Sanchez Michael O'Driscoll Kate Sparks Peggy Bernin Andre Büssing Phil Dewe Peter Hart Luo Lu Karen Miller Lucio Flavio Renault de Moraes Gabrielle M. Ostrognay Milan Pagon Horea Pitariu Steven Poelmans Phani Radhakrishnan Vesselina Russinova Vladimir Salamatov Jesus Salgado Satoru Shima Oi Ling Siu Jean Benjamin Stora Mare Teichmann Tres Theorell Peter Vlerick Mina Westman Maria Widerszal‐Bazyl Paul Wong Shanfa Yu 《组织行为杂志》2001,22(8):815-832
Data were collected from managers in 24 nations/territories on work locus of control (LOC), individualism–collectivism (I–C), and well‐being (job satisfaction, absence of psychological strain, and absence of physical strain). There were significant mean differences across samples on all five of these measures, and consistent with our hypothesis, at the ecological or sample mean level well‐being was associated with an internal locus of control. However, contrary to our hypothesis, well‐being was not associated with I–C, despite a strong correlation between I–C and LOC. Findings at the ecological level were consistent with the literature concerning the salutary effects of control on well‐being. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
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This study used policy capturing to test the ‘figurehead’ assertion that executive pay level contributes to followers' perceptions of a leader's ability. Findings indicated human capital factors including promotion history, degree earned and university prestige all furnished more explanation than pay for CEO ratings. Results challenged the underlying logic of figurehead explanations for executive compensation to the rank and file. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
533.
Pamela C. Miller Jai E. Shim George W. Holden 《Journal of environmental psychology》1998,18(4):387-398
Although it is commonly recognized that parenting is multiply determined, mechanisms by which the context influences parental behavior have rarely been examined. In this paper, the role of environmental affordances and demands are described and tested in two observational studies. In Study 1, mothers and their 3-year-old children were observed in three settings where affordances and demands differed: the home, park, and laboratory. In Study 2, mothers and their children engaged in three laboratory conditions in which the amount of demands on the mother was manipulated. Several child-rearing variables showed systematic relations with the presence of affordances and demands. It is concluded that affordances and demands play an important role in influencing maternal behavior by acting as environmental cues for place-related behavior. Further, it is proposed that parental perceptions of the immediate context and the recognition of appropriate environmental cues are paramount in understanding the variability of parental behavior across situational contexts. 相似文献
534.
Charles G. Hanlon R. L. Miller B. F. McPherson 《Journal of the American Water Resources Association》1998,34(4):951-961
ABSTRACT: Relationships between wind velocity and the vertical light attenuation coefficient (K0) were determined at two locations in a large, shallow lake (Lake Okeechobee, Florida, USA). K0 was significantly correlated with antecedent wind conditions, which explained as much as 90 percent of the daily variation in K0. Sub-surface irradiance began to change within 60 to 90 minutes of the time when wind velocity exceeded or dropped below a threshold value. Maximum one hour changes in K0 were > 50 percent, however, 20 to 30 percent changes were more common. The magnitude of change in K0 varied spatially based on differences in sediment type. K0 never exceeded 2.8 at a location where bottom sediments were dominated by a mixture of coarse sand and shells. In comparison, K0 exceeded 9 during episodic wind events where the bottom sediment was comprised of fine grain mud. Underwater irradiance data can be used to determine threshold wind velocity and account for the influence sediment type has on K0. Once a threshold velocity has been established, the frequency, rate, and duration of expected change in underwater irradiance can be evaluated. This is critical information for scientists who are studying algal productivity or other light-related phenomena. 相似文献
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Jun Zhu Curtis Miller Fei Yu Paul Chen Roger Ruan 《Journal of environmental science and health. Part. B》2013,48(4):393-401
In this paper, continuous production of hydrogen through fermentation with liquid swine manure as substrate was researched using a semi-continuously fed fermenter (8 L in total volume and 4 L in working volume). The pH and temperature for the fermenter were controlled at 5.3 ± 0.1 and 35 ± 1°C, respectively, throughout the experiment. Three hydraulic retention times (16, 20, and 24 h) were investigated for their impact on the efficiency and performance of the fermenter in terms of hydrogen yields. The results indicate that hydraulic retention time (HRT) has a strong influence on the fermenter performance. An increasing HRT would increase the variation in hydrogen concentration in the offgas. To produce hydrogen with a fairly consistent concentration, the HRT of the fermenter should not exceed 16 h, which, however, did not appear to be short enough to control methanogenesis because the offgas still contained about 5% methane. When methane content in the offgas exceeded 2%, an inverse linear relationship between hydrogen and methane was observed with a correlation coefficient of 0.9699. To increase hydrogen content in the offgas, methane production has to be limited to below 2%. Also, keeping oxygen content in the fermenter below 1.5% would increase the hydrogen concentration to over 15%. The product to substrate ratio was found to be around 50% for the fermenter system studied, evidenced by the observation that for every 6 liters of manure fermented, 3 liters of pure hydrogen were produced, which was significant and encouraging. 相似文献
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