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2.
Robert?StewartEmail author Karen?Hill Jessa?Stewart David?Bimler John?Kirkland 《Quality and Quantity》2005,39(6):687-709
The underlying “architecture of the decision to pursue a degree in psychology was quantified using the Method of Sorting technique
to identifying the critical issues necessary to make this choice. Multidimentsional scaling procedures were employed to construct
a three-dimensional map representing the relationships between reasons for selecting psychology as a major. Freshman and senior
psychology majors (N = 165) from a regional university and a large research-based institution rated the relative importance of items in their
decision-making process. Hierarchical clustering procedures revealed seven different groups of students. Although significant
differences associated with class standing were not found, institutional affiliation did influence cluster composition. Reflecting
local emphases, students at the regional institution had a greater interest in Counseling Psychology, whereas those at the
research-based school focused on Clinical Psychology. This semantic map and the associated item clusters arising from psychology
student data provides an empirical basis for, amongst other things, course selection, faculty-initiated program design or
revision, strategic niche marketing, and student retention. 相似文献
3.
磁防垢除垢技术研究与应用新进展 总被引:3,自引:0,他引:3
回顾了磁防垢除垢技术的发展历程,介绍了磁防垢除垢技术的作用效果和应用情况,分析了磁防垢除垢技术研究现状和存在的问题,跟踪报道了磁防垢除垢技术研究的新进展。 相似文献
4.
This special issue integrates eleven papers focussing on indicators able to convey the multiple expectations that society has concerning agricultural land. As scale issues have been so far overlooked within this research topic, a particular focus of this themed issue is to highlight the need for reconciling assessments across scales. The shared purpose of the contributions is to examine how the multiple societal expectations concerning agrarian landscapes might be incorporated into land use policy at different governance levels.A core set of these papers were presented in the symposium “Linking social indicators across scales”, to the European Congress of the International Association of Landscape Ecology (IALE) in September 2013 in Manchester, UK. This symposium was organized to create the time and space for a discussion on the issues of scale when capturing societal preferences concerning agrarian landscapes. While the landscape scale was specifically addressed by four papers, seven papers examined broader geographic units in addition to up-scaling and downscaling issues. 相似文献
5.
Kamille Sofie TÅgholt Gad Jeppe Woetmann Nielsen 《Scandinavian actuarial journal》2016,2016(10):876-904
Uncertain time of retirement and uncertain structure of retirement benefits are risk factors for life insurance companies. Nevertheless, classical life insurance models assume these are deterministic. In this paper, we include the risk from stochastic time of retirement and stochastic benefit structure in a classical finite-state Markov model for a life insurance contract. We include discontinuities in the distribution of the retirement time. First, we derive formulas for appropriate scaling of the benefits according to the time of retirement and discuss the link between the scaling and the guarantees provided. Stochastic retirement creates a need to rethink the construction of disability products for high ages and ways to handle this are discussed. We show how to calculate market reserves and how to use modified transition probabilities to calculate expected cash flows without significantly more complexity than in the traditional model. At last, we demonstrate the impact of stochastic retirement on market reserves and expected cash flow in numerical examples. 相似文献
6.
中央空调循环水处理是通过中央空调的循环水系统来实现的,这样的水处理之所以重要主要是因为没有经处理的水会使管道腐蚀、结垢等,使得设备的使用寿命大大缩短。 相似文献
7.
科学研判城市公园面积与人口规模的关系,有利于
客观认识和指导城市的可持续发展。采用1996—2019年中
国291个地级及以上城市公园面积与人口规模数据,探究二者
之间的标度关系及其标度因子的时空演化规律,进而采用基于
标度律的公园规模修正模型度量各城市公园面积达到预期值的
程度,并对规模修正指标和人均公园面积进行比较分析,得到
如下结果。1)我国公园面积与人口规模整体呈亚线性规模缩
放关系,公园具有显著规模效应,符合城市标度律特征;时间
上呈现亚线性-超线性-亚线性的阶段性波动演变特征,空间
上分异明显:华南接近线性标度关系,华中、东北、华北、西
南呈典型亚线性关系,华东、西北呈亚线性,但标度因子偏离
度较大。2)大城市在人均公园面积排序中相对靠后,在考虑
规模效应后,排名普遍提高,说明规模修正指标能在消除人口
规模影响的基础上,有效衡量不同规模城市公园面积的水平。
标度律视角下的城市公园规模测度能够为城市人口管理和公园
面积发展的决策提供科学指导,为不同规模城市公园建设提供
可借鉴的比较标准,促进公园与人口的协调发展。 相似文献
8.
在只有生产商与消费者的市场结构中,生产商之间进行垄断竞争,因产品差异每个生产商都有一定的垄断程度;在有规模零售商的市场结构中,规模零售商的零售业务的目标转变为市场占有或销售量最大化,从而展开了规模零售商之间同质商品的纯价格竞争.规模零售商凭借其渠道力量迫使生产商进行价格减让或收取通道费以支持其价格战.这样由于规模零售商的介入,生产商与消费者之间的价格关系或市场关系发生了变化,消费者能够购买价格更低的商品. 相似文献
9.
土地利用的尺度和尺度转换 总被引:9,自引:0,他引:9
研究目的:研究和分析生态地理学中有关尺度及尺度转换的概念及内涵,探讨土地利用模式的尺度转换方法.研究方法:图示法,多元线性回归反演法,目标规划法.研究结果:为土地利用模式在不同尺度间的转换提供了方法参考,丰富了生态地理学中有关尺度及尺度转换的研究.研究结论:尺度和尺度转换涉及生态学、地理学等多个领域,更深层次的研究需要各学科的联合. 相似文献
10.
Cost‐reflective pricing: empirical insights into irrigators’ preferences for water tariffs 下载免费PDF全文
Bethany Cooper Lin Crase John M. Rose 《The Australian journal of agricultural and resource economics》2018,62(2):256-278
Using prices to improve the efficiency with which water resources are allocated is now widely accepted in principle if somewhat difficult to achieve in practice. Whilst there are some technical difficulties associated with full‐cost recovery in irrigation, the lack of political will to tackle reform remains a significant impediment. This article reports the results of an empirical investigation into farmers’ preferences for changes to water prices and tariff structures. We conclude that some of the preferences of farmers are conducive to price reform. We also find evidence that public subsidy of infrastructure in irrigation is not always aligned with the preferences of farmers. 相似文献