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81.
82.
Used a multiple constituency framework to examine the correlates (antecedents) of organizational commitment among 124 mental health professionals (mean age 28 yrs). Ss completed a constituency endorsement measure and an organizational commitment questionnaire. Conflicts among multiple commitments and multiple commitments to several constituencies (3 internal and 1 external) were correlated with global organizational commitment. Results indicate that the perceived conflict between individual and managerial goal orientations was significantly associated with organizational commitment. In addition, only commitment to top management's goals was positively associated with commitment to the organization. It is suggested that commitments may develop over time and should therefore be studied longitudinally. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
83.
Arnon E. Munter E. Patel S. Roddick P. Willcock P. 《Communications, IEEE Transactions on》1982,30(9):2143-2149
The key to the successful emergence of the information society [1] is an access system that permits new and diverse communication services to flourish. A fundamental component of such a network is a digital end-to-end communication capability. This paper presents an approach to the design of a digital access system for application in both residential and business environments. Switch, customer premises, and distribution design concepts are presented, and the results of field and laboratory tests of a multichannel digital distribution system are described. 相似文献
84.
To evaluate the clinical significance of eosinophilia in newborn infants, 261 admissions to the neonatal unit over a 12-month period were studied retrospectively; 33 babies with eosinophilia (> 1.0 x 10(9)/l) were studied. Clinical and laboratory data for the first month of life were compared, where available, between gestational age-matched pairs with and without eosinophilia. Of the 33 babies with eosinophilia, 23 were > 26 weeks' gestation and all had age-matched controls; 10 were < or = 26 weeks' gestation but had no appropriate gestational age-matched controls. Babies > 26 weeks' gestation with eosinophilia had a significantly higher number of septic episodes than controls: 20 of 23 versus 4 of 23. All 10 babies < or = 26 weeks' gestation with eosinophilia developed sepsis. Infections with gram-negative organisms and necrotizing enterocolitis occurred only in babies who developed eosinophilia. In 5 babies no cause for the eosinophilia was found. In conclusion, eosinophilia in the newborn is usually explainable and is most often associated with infection. 相似文献
85.
86.
Arnon S. Kopeika N.S. 《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1997,85(10):1646-1661
A number of serious consortiums develop satellite communication networks. The objective of these communication projects is to service personal communication users almost everywhere on Earth. The intersatellite links in those projects use microwave radiation as the carrier. Free-space optical communication between satellites networked together can make possible high-speed communication between different places on Earth. Some advantages of an optical communication system over a microwave communication system in free space are: (1) smaller size and weight, (2) less transmitter power, (3) larger bandwidth, and (4) higher immunity to interference. The pointing from one satellite to another is a complicated problem due to the large distance between the satellite, the narrow beam divergence angle, and vibration of the pointing system. Such vibration of the transmitted beam in the receiver plane decreases the average received signal, which increases the bit error rate. We review: (1) the present status of satellite networks, (2) developing efforts of optical satellite communication around the world, (3) performance results of vibration effects on different kinds of optical communication satellite networks, and (4) seven approaches to overcome the problems caused by transmitter pointing vibration 相似文献
87.
R Arnon 《Canadian Metallurgical Quarterly》1996,50(1-2):1-15
The aim of the review is to summarize the present knowledge on determinants of transfer of low density lipoprotein (LDL) into the arterial wall, particularly in relation to the risk of development of atherosclerosis. The flux of LDL into the arterial wall (in moles of LDL per surface area per unit of time) has two major determinants, i.e. the LDL concentration in plasma and the arterial wall permeability. LDL enters the arterial wall as intact particles by vesicular ferrying through endothelial cells and/or by passive sieving through pores in or between endothelial cells. Estimates in vivo of the LDL permeability of a normal arterial wall vary between 5 and 100 nl/cm2/h. In laboratory animals, the regional variation in the arterial wall permeability predicts the pattern of subsequent dietary induced atherosclerosis. Moreover, mechanical or immunological injury of the arterial wall increases the LDL permeability and is accompanied by accelerated development of experimental atherosclerosis. This supports the idea that an increased permeability to LDL, like an increased plasma LDL concentration, increases the risk of atherosclerosis. Hypertension, smoking, genetic predisposition, atherosclerosis, and a small size of LDL may all increase the arterial wall permeability to LDL and in this way increase the risk of accelerated development of atherosclerosis. The hypothesis that atherosclerosis risk can be reduced by improving the barrier function of the arterial wall towards the entry of LDL remains to be investigated; agents which directly modulate the LDL permeability of the arterial wall in vivo await identification. 相似文献
88.
The notion of bilattice was introduced by Ginsberg, and further examined by Fitting, as a general framework for many applications. In the present paper we develop proof systems, which correspond to bilattices in an essential way. For this goal we introduce the notion of logical bilattices. We also show how they can be used for efficient inferences from possibly inconsistent data. For this we incorporate certain ideas of Kifer and Lozinskii, which happen to suit well the context of our work. The outcome are paraconsistent logics with a lot of desirable properties. A preliminary version of this paper appears in Arieli and Avron (1994). 相似文献
89.
This is a report on a psychiatric epidemiological census conducted in six Israeli villages. The method of case identification relied on data extracted from medical cards and the use of two shortened versions of the CMI. The results showed a distribution affected by sex, age, ethnicity, education, and "status consumer". A comparison with other Israeli studies is made. 相似文献
90.
Inna?Zeltser Arnon?ShaniEmail author 《Journal of the American Oil Chemists' Society》2002,79(6):597-601
Jojoba bis-epoxide (1.6 mmol) undergoes pinacol rearrangement upon reaction with the iodide ion (60 mmol) under slightly acidic
conditions, via an iodohydrin as an intermediate, to yield bis-ketojojoba in high yield (92%) after 25 h reflux in THF; no hydroxy derivatives
were detected. Since the nucleophilic opening of the epoxide ring is statistically equal on both sides, the rearranged product
may have the two carbonyl groups on either side of the original carbon atoms of the two epoxide rings, both completely opened.
MS of the rearranged products reveals that the ring opening is approximately equal on both sides of the epoxide ring. Other
nucleophiles, such as acetate and amine, open the ring sluggishly without rearrangement. 相似文献