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1.
曾召友 《四川生殖卫生学院学报》2004,(1):44-47
笔者指出需从整合出版权资源、整合出版人才资源、整合作者资源、整合读者资源、整合版权资源、整合发行资源6个方面来加强我国出版业在整体上的实力,来迎接即将到来的国际性竞争。 相似文献
2.
3.
Carol A. Shively Ph.D. Stephen B. Manuck Ph.D. Jay R. Kaplan Ph.D. Donald R. Koritnik Ph.D. 《Archives of sexual behavior》1990,19(2):101-117
The effects of oral contraceptive administration on the social relationships of adult female cynomolgus monkeys (Macaca fascicularis) were examined. Ten females were administered ethinyl estradiol/ethynodiol diacetate (Demulen), 10 were administered ethinyl estradiol/norgestrel (Ovral), and 10 served as a control group. The monkeys lived in social groups of 5 females each, and patterns of social interaction and social status were recorded. Interfemale relationships were also observed when a vasectomized male was placed in each social group for 50 min, once/week. During the latter observations, preliminary data on the effects of oral contraceptive treatment on sexual interaction were also collected. In the absence of the male, interfemale agonistic interactions and time spent alone were influenced by social status but not by oral contraceptive treatment. Time spent in passive body contact, an affiliative state, was reduced by Ovral treatment. In the presence of the male, dominant females aggressively interfered with the sexual interactions of subordinates. This aggression resulted in the termination of a greater proportion of the sexual interactions of subordinates than dominants in the control group only, indicating suppression of this type of interaction by oral contraceptive treatment. Other effects included a decreased frequency of ejaculation with Ovral-treated females. These results suggest that oral contraceptives may suppress certain types of female agonistic behavior (e.g., in the context of mate competition) and some oral contraceptives may interfere with sexual activity. More broadly, these findings indicate that intrasexual competition for access to mates may occur in females as well as males.
This study was supported in part by NICHD Contract #N01-HD-32800 and by Grant #HL14164 from the National Heart, Lung and Blood Institute. 相似文献
4.
实施人才强院战略铸造医院核心竞争力 总被引:2,自引:0,他引:2
介绍绍兴市人民医院实施人才强院战略,打造医院核心竞争力的经验和成效创新人才观念,改革内部用人机制;制定育才引才并举的人才策略;创新人才管理体制,构建科学的人才激励机制. 相似文献
5.
Robert J. Town Douglas Wholey Roger Feldman Lawton R. Burns 《Health services research》2007,42(1P1):219-238
Objective. This paper analyzes whether the rise in managed care during the 1990s caused the increase in hospital concentration.
Data Sources. We assemble data from the American Hospital Association, InterStudy and government censuses from 1990 to 2000.
Study Design. We employ linear regression analyses on long differenced data to estimate the impact of managed care penetration on hospital consolidation. Instrumental variable analogs of these regressions are also analyzed to control for potential endogeneity.
Data Collection. All data are from secondary sources merged at the level of the Health Care Services Area.
Principle Findings. In 1990, the mean population-weighted hospital Herfindahl–Hirschman index (HHI) in a Health Services Area was .19. By 2000, the HHI had risen to .26. Most of this increase in hospital concentration is due to hospital consolidation. Over the same time frame HMO penetration increased three fold. However, our regression analysis strongly implies that the rise of managed care did not cause the hospital consolidation wave. This finding is robust to a number of different specifications. 相似文献
Data Sources. We assemble data from the American Hospital Association, InterStudy and government censuses from 1990 to 2000.
Study Design. We employ linear regression analyses on long differenced data to estimate the impact of managed care penetration on hospital consolidation. Instrumental variable analogs of these regressions are also analyzed to control for potential endogeneity.
Data Collection. All data are from secondary sources merged at the level of the Health Care Services Area.
Principle Findings. In 1990, the mean population-weighted hospital Herfindahl–Hirschman index (HHI) in a Health Services Area was .19. By 2000, the HHI had risen to .26. Most of this increase in hospital concentration is due to hospital consolidation. Over the same time frame HMO penetration increased three fold. However, our regression analysis strongly implies that the rise of managed care did not cause the hospital consolidation wave. This finding is robust to a number of different specifications. 相似文献
6.
Splenic T cells from myelin basic protein (MBP)-immunised Lewis rats were activated to transfer experimental autoimmune encephalomyelitis (EAE) by co-culture with MBP-pulsed lymphoid dendritic cells (DC). MBP-pulsed DC could be kept for at least 24 h at 37 degrees C in antigen-free medium without affecting their ability subsequently to activate encephalitogenic T cells. However, MBP-pulsed DC were rendered much less stimulatory after a 6 h, but not 2 h, secondary incubation with ovalbumin. Thus, although encephalitogenic complexes between MBP and DC appear very stable in the absence of competing antigens, in their presence, antigen exchange can take place over a period of a few hours; this has positive implications for therapy of EAE by antigen competition. 相似文献
7.
8.
实施绩效考核的实践和体会 总被引:7,自引:0,他引:7
介绍绍兴市人民医院实施绩效考核的经验和体会.其经验在于:明确考核定位,把考核的首要目的定位于医院管理目标的实现和对管理过程的一种控制;运作方式是:制定考核标准、确立考核周期、明确考核部门及人员,使绩效考核真正落到了实处,收到了显著效果. 相似文献
9.
E. Depiereux C. Dernoncourt-Sterpin J. Lechien E. Feytmans A. Elens 《Behavior genetics》1990,20(4):511-533
When two types ofDrosophila are in competition, the frequency dependence of mating success routinely is measured in our laboratory by direct observation of mating pairs in Elens-Wattiaux observation chambers. The present experiments concern white mutants (used here as a reference standard) in competition with three other genotypes: wild-type Canton S, giantgt w
a
, and giantgt
13z
/w
+
Y/C(1)Dx, y f. From the present observations, the frequency dependence of mating success seems a very common phenomenon: a rare-type sexual advantage exists for females and for males. Sexual activity of male and femalewhite mutants is significantly higher when food is present in the mating chamber. Males of the other strains also are more active in the presence of food. Homogamic matings are more frequent amonggt
13z
/w
+
Y/C(1)Dx, y f flies. 相似文献
10.
Reda M. El-S. Hassanine Mohammed O. Al-Jahdali 《Acta parasitologica / Witold Stefański Institute of Parasitology, Warszawa, Poland》2008,53(3):289-295
During June and July of 2007, a total of 130 specimens of the fish Rastrelliger kanagurta Cuvier (Teleostei, Scombridae), ranging between 19–31 cm in total length, were caught in the Red Sea off the coast of Sharm
El-Sheikh, South Sinai, Egypt, and examined for infections by acanthocephalans (65 fish/month). Of this number, 29 (22.30%)
were slightly or heavily parasitized by the acanthocephalan Diplosentis nudus (Harada, 1938) Pichelin et Cribb, 2001 (Cavisomidae); no other helminth parasites were found in the intestine of R. kanagurta. Twenty-nine infrapopulations of D. nudus, ranging from 23–218 individuals were collected from the infected fishes. These infrapopulations were distributed in a well-defined
fundamental niche along the intestine of R. kanagurta, where the distribution of male worms was not random with respect to female worms size and position and suggests that the
male-male competition for access to female may be intense and may select for large males. No correlation between fish size
and infrapopulation size was observed. Correlations between female-to-male sex ratio and infrapopulation size, numbers of
females and their mean lengths, numbers of males and their mean lengths, mean female length and mean male length within infrapopulation
were very strong, and clearly suggest that as the infrapopulation size increased, the number of females and their mean lengths
decreased and the number of males and their mean lengths increased. Combination of these results strongly suggests density-dependent
effects and competition between male worms. The relationship between the mean female length or size and the number of eggs
within its pseudocoel was strongly positive; egg production by female worm significantly decreases as the infrapopulation
size increases, suggesting density-dependent reduction in female worm fecundity. Tendency for the variability in male testes
size was not significant in infrapopulations of D. nudus. All of these results are discussed. 相似文献