Tourism occupations,career profiles and knowledge

This paper summarizes the approach and main findings of a research study undertaken by the Tourism Society into occupations, career profiles and knowledge requirements of professionals engaged in tourism. It outlines the main stages in the research program, including the identification of a body of knowledge about tourism, the development of an occupational classification, and a survey of professionals employed in tourism. It then presents and comments on findings covering occupational classifications, career profiles and knowledge requirements, making particular reference to the implications for tourism education. The study is very much a pioneering work in this field and it is confined to the experiences of the United Kingdom.     

Conditional beta pricing models: A nonparametric approach

We propose a two-stage procedure to estimate conditional beta pricing models that allows for flexibility in the dynamics of asset betas and market prices of risk (MPR). First, conditional betas are estimated nonparametrically for each asset and period using the time-series of previous data. Then, time-varying MPR are estimated from the cross-section of returns and betas. We prove the consistency and asymptotic normality of the estimators. We also perform Monte Carlo simulations for the conditional version of the three-factor model of Fama and French (1993) and show that nonparametrically estimated betas outperform rolling betas under different specifications of beta dynamics. Using return data on the 25 size and book-to-market sorted portfolios, we find that the nonparametric procedure produces a better fit of the three-factor model to the data, less biased estimates of MPR and lower pricing errors than the Fama–MacBeth procedure with betas estimated under several alternative parametric specifications.     

Proportionally adjusted marginal pricing method to share joint costs

We consider the cost sharing problem with divisible demands of heterogeneous goods. We propose a cost sharing method called Proportionally Adjusted Marginal Pricing (PAMP) method. PAMP is a nonadditive (in the cost function) extension of average cost pricing. We introduce an axiom called Local Independence (LI) and use LI together with Continuity, Proportionality, and Scale Invariance to characterize PAMP. Received: 23 March 2001 / Accepted: 16 November 2001 I thank Yves Sprumont, Hervé Moulin, and Ahmet Alkan for discussions, comments and suggestions. Thanks also go to the associate editor and the referees, whose comments and suggestions greatly improve the paper.     

基于优化HRNetV2的高分辨率遥感影像土地利用自动分类

研究目的：基于语义分割模型HRNetV2实现高分辨率遥感影像的土地利用自动分类,以期推动深度学习语义分割方法实现遥感影像的土地利用自动分类研究,并为该类研究提供可参考的案例。研究方法：首先对语义分割模型HRNetV2从损失函数、特征提取方面进行优化,以提高模型的分割精度;其次用优化后的HRNetV2模型对民乐县2 m的高分辨率遥感影像进行土地利用分类,并基于混淆矩阵对分类的结果进行评估。研究结果：（1）优化后的HRNetV2语义分割模型的MIOU达81.9%,相较于优化前提高了4.4%, 证明了优化方法的有效性;（2）针对民乐县进行的土地利用自动分类总体精度达89.72%,Kappa系数达0.888。研究结论：优化后的HRNetV2语义分割模型在高分辨率遥感影像的土地利用自动分类中具有较强的应用前景。     

员工职业停滞的理论分类与现实判定

职业停滞的现有分类存在诸多问题,一定程度上导致了目前职业停滞预测效果、治理效果不理想的局面。本研究从内容分析、文献研究入手提炼职业停滞的分类依据,进而透过动机、能力和机会三个层面对职业停滞进行理论分类,最后通过实证研究对职业停滞作出现实判定和检验,为今后的相关研究奠定基础。     

企业员工组织承诺和工作绩效的相关研究

本研究以浙江绍兴某集团下属的5个子公司的320名企业员工为研究时象,根据调查问卷数据,分析发现:在规范承诺与继续承诺方面,不同学历和工龄员工具有显著差异.在情感承诺方面,不同工龄的员工显著差异.学历显著影响着人际互动、职业道德与工作效能.不同工作地点员工在规范承诺、继续承诺之间差异显著,但是与情感承诺无关.工作地点与工作绩效的各个维度都有显著差异.组织承诺各维度与工作绩效各维度之间存在显著相关.本文还尝试分析了增强企业员工情感承诺和规范承诺以提高员工工作绩效的相应措施.     

海域空间层叠利用的立体功能区划研究

影响海域空间层叠利用海域价值的指标众多,为了分析不同指标影响程度的大小,文章从海域空间层叠利用立体功能区划的划分依据出发,构建了基于叠置分析的海域空间层叠利用立体功能区划模型;同时对胶州湾层叠用海情况进行了实证研究,利用GIS技术空间分析中的空间叠置分析方法,完成层叠用海兼容方案。     

R&D, risks and overreaction in a market with the absence of the book-to-market effect

Prior studies document that the book-to-market (BM) effect is absent in the Taiwan stock market. Using Taiwanese data covering from 1991 to 2006, we show that, after controlling for the size effect and the Fama and French's (1993) risk factors, the BM effect only exists for those firms with low R&D intensity essentially because these stocks suffer less from investors’ underreaction to R&D investment. The BM effect arises primarily from fundamental reversals acting as a proxy for investors’ overreaction.