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排序方式: 共有222条查询结果,搜索用时 31 毫秒
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条件价值评估法(CVM)是目前唯一能获知环境资源的全部经济价值,包括使用和非使用价值。CVM评估环境物品价值原理是通过假想市场来了解消费者对具体的一个环境物品的偏好,并通过支付意愿而表现出来。CVM调查过程中,为了获得消费者对环境物品价值的偏好,必须通过各种诱导技术。不同的诱导技术可产生不同的支付意愿结果。本研究通过评估越南巴为国家森林公园生态旅游非使用价值来比较CVM中的两分式(DC)和支付卡(PC)诱导技术。通过本研究结果,得出以下的结论:(1)DC技术获得的支付意愿(wTP)和参与者的“同意”支付都高于PC技术;(2)CVM完全可以应用于环境物品非使用价值评估领域。  相似文献   
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This paper describes an effective algorithm for constructing optimal or near-optimal resolvable row-column designs (RCDs) with up to 100 treatments. The performance of this algorithm is assessed against 20 2-replicate resolvable RCDs of Patterson & Robinson (1989) and 17 resolvable RCDs based on generalized cyclic designs (GCDs) of Ipinyomi & John (1985). The use of the algorithm to construct RCDs with contiguous replicates is discussed.  相似文献   
205.
This paper describes an efficient algorithm for the construction of optimal or near-optimal resolvable incomplete block designs (IBDs) for any number of treatments v < 100. The performance of this algorithm is evaluated against known lattice designs and the 414 or-designs of Patterson & Williams [36]. For the designs under study, it appears that our algorithm is about equally effective as the simulated annealing algorithm of Venables & Eccleston [42]. An example of the use of our algorithm to construct the row (or column) components of resolvable row-column designs is given.  相似文献   
206.
Program review has not received the attention it warrants as a program evaluation tool despite its wide use for evaluation and management purposes. The use of the program review will probably endure on the strength of its face validity and irrespective of other developments in the field of program evaluation. Evaluators should realize this and, accordingly, attempt to improve its effectiveness. This paper presents one organization's approach to achieving this objective through the explication of development principles, implementation guidelines and review items. This paper also discusses benefits that can be expected from a systematic development of this tool and presents various research directions and potentials in this area.  相似文献   
207.
The condition of the strong law of large numbers is obtained for sequences of random elements in type p Banach spaces that are blockwise orthogonal. The current work extends a result of Chobanyan & Mandrekar (2000) [On Kolmogorov SLLN under rearrangements for orthogonal random variables in a B ‐space. J. Theoret. Probab. 13, 135–139.] Special cases of the main results are presented as corollaries, and illustrative examples are provided.  相似文献   
208.
This paper gives a necessary and sufficient condition for the existence of a finite conditional maximum-likelihood estimate for the binomial parameter n. Upper bounds for the conditional and beta-binomial maximum-likelihood estimators are derived. An example is given to show that the conditional likelihood function and the beta-binomial likelihood function may not be unimodal.  相似文献   
209.
With 80% of Vietnamese people holding key Buddhist beliefs, Buddhism has great impact on the thoughts, emotions, and behavior of Vietnamese people. However, almost no Buddhism‐based psychosocial interventions are offered at formal psychiatric hospitals across Vietnam, nor is there any plan to incorporate these interventions into mental health care. This exploratory study examines the perceptions of mental health clients and staff regarding the effectiveness of Buddhism‐based therapies (BBTs) in mental health treatment in Vietnam, using ethnographic observation and in‐depth interviews with 24 patients and eight professionals at the only psychiatric hospital employing BBT. Participants strongly believed in the positive impact of BBT to help clients manage or improve their symptoms. However, clients and staff advised that BBT should not be used alone; rather it should be used in combination with medication and was best employed for stress‐related disorders. They unanimously supported incorporating BBT into the formal mental health system, especially if the therapies were well developed through collaboration between Buddhist monastics and mental health professionals. Results of the paper suggest that Vietnam should think strategically about developing and incorporating BBT into the formal mental health care system.  相似文献   
210.
Most Asian American elders are immigrants to the United States, and sociocultural factors such as English proficiency and immigration status are prominent factors in their lives. Using data from the California Health Interview Surveys to focus on Asian Americans over age 50, this study seeks to identify interethnic differences, and the effects of English proficiency and immigration status in the way older Asian Americans access healthcare. The results indicated that Asian ethnicity, English proficiency, and immigration status have significant independent effects on older Asian Americans' access to care. Implications for social work's role in addressing access disparities are discussed.  相似文献   
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