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排序方式: 共有10000条查询结果,搜索用时 218 毫秒
41.
风险企业投资价值评价与案例研究 总被引:1,自引:1,他引:0
通过现场访谈和问卷调查,构建了中国风险企业投资价值的评价指标体系,该评价体系包含了管理层素质、员工素质、产品与技术特性及市场销售能力及20个评价指标,并以上海生物制品有限公司为案例,详细地介绍了风险企业投资价值评价的具体过程及方法。 相似文献
42.
Sets of relatively short time series arise in many situations. One aspect of their analysis may be the detection of outlying
series. We examine the performance of standard normal outlier tests applied to the means, or to simple functions of the means,
of AR(1) series, not necessarily of equal lengths. Although unequal lengths of series implies that the means have unequal
variances, that are only known approximately, it is shown that nominal significance levels hold good under most circumstances.
Thus a standard outlier test can usefully be applied, avoiding the complication of estimating the time series' parameters.
The test's power is affected by unequal lengths, being higher when the slippage occurs in one of the longer series 相似文献
43.
本文结合当前的国内外形势 ,阐述了企业员工学习英语的必要性、紧迫性。本文作者作为从教多年的英语教师和现代企业的出色管理人员 ,根据自身的工作实践和经验 ,提出了一些切实可行的建议 ,以供企业有效地组织员工进行英语学习 ,同时也为员工在学习英语的过程中遇到的实际困难提出了独到的见解 相似文献
44.
周晓丽 《东北农业大学学报(社会科学版)》2008,6(1):88-90
黑龙江汉族民歌的衍变历经了数百年的岁月沧桑,它与民族迁徙、人口变迁以及文化传统等存在着极为密切的联系。通过对黑龙江民歌与河北、山东、河南、山西民歌进行比较,表明黑龙江民歌与河北民歌之间存在着较近的亲缘关系。因此,文章试图在对较有代表性的几首黑龙江与河北民歌比较研究的基础上进一步探究黑龙江民歌衍变的影响因素。 相似文献
45.
相对社会责任的承担与实现,对企业自身和社会都具有重大意义,但由于缺乏机制的制约和策略的应用,其实现是困难的。正确处理企业利益与社会责任的关系,促使更多企业从履行绝对社会责任,上升到追求更高层次社会责任的实现,一方面需要外在环境的保障,另一方面要求企业在履行社会责任时,注意策略选择。 相似文献
46.
The Anamnestic Comparative Self Assessment (ACSA) measure of subjective well-being (SWB) aims to reduce the problems of cultural
bias and relativity to external standards by allowing people to define the endpoints or ‘anchors’ of the measurement scale.
In medical terminology anamnestic denotes ‘based on memory’. The ACSA uses subjects’ memories of the best and worst periods
in their lives to define the anchors of the scale. They then assess their current quality of life relative to these personal
anchors. The South African pilot study tested the match between self-assessment of SWB with ACSA and the conventional single-item
measures of life satisfaction and happiness used in the South African Quality of Life Trends Study and analysed the narratives
of the best and worst times of life. The quota sample of 46 consisted of 26 residents of Makana district in the Eastern Cape
Province, South Africa, and 20 patients undergoing treatment in the local TB hospital. Mean SWB ratings with all three measures
of life satisfaction, happiness and ACSA were between 5 and 6 on a 0–10-point scale. Ratings on all three scales were positively
correlated. However, on ACSA the TB patients rated their current SWB 1.84 points lower than the community respondents, suggesting
a greater sensitivity of this measure. It was observed that the starting points of the life stories produced by respondents
to define the anchor periods for ACSA were related to their current assessment of SWB. A typology was developed that combined
the starting point of the life stories with current SWB. The majority of community respondents matched the ‘Achiever’ type
who scored positively on ACSA (i.e., above the mid-point of the scale) and whose life stories started with the worst period
of their lives and proceeded to the best period. The TB patients were the only respondents to represent the ‘Survivor’ type
whose morale had recovered after misfortune in life. ‘Survivors’ started their narratives with the best period in their lives,
then moved to the worst (often health-related) one, and gave positive ACSA ratings. Based on the qualitative analysis of narratives,
it is concluded that ACSA is a sensitive measurement instrument and therefore particularly useful for monitoring the effects
of treatments and social interventions in longitudinal studies. However, further research is required to verify its cross-cultural
validity.
相似文献
Jan BernheimEmail: |
47.
Dele Olowu 《Habitat International》2003,27(4):501
Of the three most prominent issues in governance discourse—the horizontal coordination of markets, government hierarchies and networks, global governance and multi-level governance—this paper argues that the last, developing and sustaining structures of multi-level governance, constitutes the most profound governance challenge for most developing countries.The paper identifies the major forces promoting change in favor of multi-level governance in developing countries. Using the growing literature and comparative national experiences (illustrated with the examples of India, the Philippines, Colombia and Nigeria), it highlights the key achievements of democratic decentralization as well as its nagging problems in these countries. Finally, the paper demonstrates the significance of these developments for democracy and development in these countries and shows some of the ways by which external partners—especially experts associated with the Geographic Information Systems for Developing Countries can assist and possibly benefit from this process. 相似文献
48.
GPS接收机P(Y)直捕方法研究 总被引:1,自引:0,他引:1
GPS接收机P(Y)直捕算法是基于存储的滑动相关搜索,并利用FFT将时频二维联合搜索变成时域一维搜索。同时,考虑位同步点已知的条件,接收资源池只需存储一段接收序列,缩短了捕获时间且利于硬件实现。仿真结果表明,多普勒频移为±5kHz时,所带来的峰值衰减为2dB左右,本地信号与接收信号对齐时出现明显的相关峰,很好地实现了捕获功能;提出了用重叠分段补零FFT操作实现并行相关,成倍降低了捕获时间;提出了利用位同步信息,避免了码极性翻转可能引起的信噪比损耗;针对码相位漂移,提出了优化捕获策略,可在短时间内完成重捕。 相似文献
49.
针对施工企业工程计划、预算部门与财务核算部门工程成本数据的脱节的问题,结合新会计准则,探讨工程与财务部门的结合、科目设置、费用的归集以及电算化核算等问题,以便更好地控制绿化园林施工企业成本。 相似文献
50.
朱城 《汕头大学学报(人文社会科学版)》2008,24(5):17-21
《汉语大字典》在义项的书证方面存在一些疏误,内容涉及书证欠妥、书证有误、引文失误、一例两用等问题。 相似文献