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基于贝叶斯多元有序probit模型的休闲渔业游客满意度研究 被引量:8
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作者 邱莹莹 王尔大 于洋 《运筹与管理》 CSSCI CSCD 北大核心 2021年第8期147-152,共6页
游客满意度是休闲渔业景区制定管理决策的重要参考信息。通过探究游览过程中游客对各单一维度的满意程度与旅游总满意度之间的关系,管理者可以从中准确了解游客偏好、消费行为以及获取旅游产品设计等重要信息。据此,本文采取实地调研,获... 游客满意度是休闲渔业景区制定管理决策的重要参考信息。通过探究游览过程中游客对各单一维度的满意程度与旅游总满意度之间的关系,管理者可以从中准确了解游客偏好、消费行为以及获取旅游产品设计等重要信息。据此,本文采取实地调研,获取11家全国休闲渔业示范基地1510份游客满意度信息,使用马尔科夫链蒙特卡洛法(Markov Chain Monte Carlo,MCMC),估算贝叶斯多元有序probit模型,并利用模型后验结果衡量休闲渔业游客7种分满意度对总体满意度的贡献。研究结果表明:渔憩体验满意度、景区环境满意度以及旅游餐饮满意度是对总体满意度影响程度最大的三种分满意度,所占比例分别为43.58%、24.67%、10.62%。 展开更多
关键词 休闲渔业 游客满意度 贝叶斯分析 多元有序probit模型 Metropolis-Hastings算法 GIBBS抽样
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基于蒙特卡洛模拟的滨海旅游环境承载力影响因素重要性排序研究——以大连滨海景区为例 被引量:5
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作者 朱佳玮 王尔大 孙文章 《运筹与管理》 CSSCI CSCD 北大核心 2021年第10期47-52,共6页
由于层次分析法(AHP)针对指标重要性的测度存在一定的缺陷:其一是主观性对数据收集的干扰;其二是相近指标权重的精确识别容易出现偏差;因此,本文联合引入三角分布函数及蒙特卡洛模拟(MCS),以期对滨海旅游环境承载力所涉评价指标的重要... 由于层次分析法(AHP)针对指标重要性的测度存在一定的缺陷:其一是主观性对数据收集的干扰;其二是相近指标权重的精确识别容易出现偏差;因此,本文联合引入三角分布函数及蒙特卡洛模拟(MCS),以期对滨海旅游环境承载力所涉评价指标的重要性测度方法进行合理改进。相比之下,研究表明基于蒙特卡洛模拟修正后的层次分析法(MCAHP)可以有效缓解问卷提取评分数据所隐含的主观偏误,最终有效提升评价结论的真实性和可靠性。据此,本文对大连滨海景区环境承载力指标重要性的实证分析结果进行修正,以期得到更为精确与科学的相关结论,同时为大连滨海旅游环境承载力的治理与旅游业的可持续发展提出相应的政策建议。 展开更多
关键词 滨海旅游 环境承载力 重要性排序 蒙特卡洛模拟
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Simulation of Hail and Soil Type Effects on Crop Yield Losses in Kansas,USA 被引量:1
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作者 wang er-da B. B. LITTLE +2 位作者 J. A. WILLIAMS YU Yang M. SCHUCKING 《Pedosphere》 SCIE CAS CSCD 2009年第5期642-653,共12页
Computer simulation was used for predictive analysis of the effects of weather and soil type on crop yield in the U.S. crop insurance program. The Environmental Policy Integrated Climate (EPIC) model was modified to... Computer simulation was used for predictive analysis of the effects of weather and soil type on crop yield in the U.S. crop insurance program. The Environmental Policy Integrated Climate (EPIC) model was modified to include hail weather events, which completed the modifications necessary to simulate the four most frequent causes of crop yield loss (hail, excessive wet, excessive cold, and excessive dry) associated with soil type in Kansas, USA. At the region level, per hectare yields were simulated for corn, wheat, soybean, and sorghum. We concluded that it was possible to predict crop yields through computer simulation with greater than 93% accuracy. The hail damage model test indicated EPIC could predict hail-soil-induced yield losses reasonably well (R^2 〉 0.6). The investigation of soil type influence on dryland sorghum and wheat production indicated that Wymore silty clay loam soil and Kenorna silt loam produced the highest sorghum yields statistically; Kuma silt loam, Roxbury silt loam, Crete silty clay loam, and Woodson silt soils produced the second highest sorghum yields statistically; and Richfiled silt loam, Wells loam, and Canadian sandy loam produced the lowest sorghum yields. By contrast, wheat production showed less sensitivity to soil type variation. The less sensitive response of wheat yields to the soil type could be largely due to the unconsidered small-scale variability of soil features. 展开更多
关键词 Environmental Policy Integrated Climate model hail damage simulation model
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Empirical analysis of the farmer's behavior under the new rural financial cooperatives in China
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作者 YU Yang wang er-da 《Ecological Economy》 2016年第2期155-166,共12页
It's been well recognized for the big role played by innovative rural cooperative financial organizations in terms of spreading farmers' operation risk,increasing farmers' income,and developing rural econo... It's been well recognized for the big role played by innovative rural cooperative financial organizations in terms of spreading farmers' operation risk,increasing farmers' income,and developing rural economy.However,no sufficient research has been conducted regarding those factors which may have effects on the farmer's willingness to participate in the new rural financial organization.This paper tries to fill out the gap of identifying various factors which may have potential influence on the farmer's willingness to participate in the new type of rural financial cooperatives.In the process,442 farmer households and small-micro-enterprises are sampled from the cooperative finance experiment villages in Panjin municipality of Liaoning province.The potential influencing factors are classified into four categories,including the famer household's characteristics,financial cooperative reputation,transaction costs,and service quality.A discrete Logit model is used for the parameter estimations.The results show that most assumed factors display statistical significance effect on the farmer's willingness to take part in the rural cooperative financing organizations but with different level of sensitivity.The cause and effect are fully discussed following by addressing policy issues related to the rural financing cooperative reforms. 展开更多
关键词 influential factor analysis rural cooperative finance willingness to participate Logit model
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