等电位间隔-电位滴定法连续测定谷物中脂肪酸值和氨基酸态氮值的实验

探讨建立等电位间隔-电位微量滴定法连续测定谷物中脂肪酸值和氨基酸态氮值的方法。试验结果得到该法对谷物脂肪酸值和氨基酸态氮值测定的平均回收率分别为98.5%和99.8%,日内RSD分别为0.6%~1.6%和0.8%~2.2%,日间RSD分别为1.8%和4.6%,测定务必日内完成,检出限分别为0.12 mg KOH/100g和0.16 mg N/100g,测定准确性较国标法更优。应用效果表明,本法具有不必每个样品的每次测定都进行繁琐操作工作的优点,且样品和试剂等测定耗材消耗量也显著减少,测定快速,节时省工,大大地降低了测定成本,效果令人满意。     

郑州市都市型现代农业发展水平评价与模式选择

都市型现代农业是我国大中城市郊区未来农业的发展方向.文章以郑州市为研究对象,在分析郑州市发展都市型现代农业条件的基础上,建立了都市型现代农业评价指标体系,运用综合评价法对郑州市都市农业发展水平进行评价,并与北京市进行对比研究.结果表明,2009年郑州市都市型现代农业发展的综合指数值为0.49,处于都市型现代农业起步阶段的中期,但与北京相比(综合指数值为0.72),尚有较大差距.最后列举了都市型现代农业的主要模式及模式选择影响因素,明确郑州应该选择生产、经济功能和生态、社会功能兼顾的都市型现代农业发展模式.     

组织绩效评价的DEA模型及应用

本文应用数据包络分析(DEA)模型C2R对几家大型医院的绩效进行了实证研究,一定程度上弥补了平衡记分法只侧重于对单个医院的组织绩效评价的不足之处,完善了对医院的组织绩效的评价体系,也为提高医院的组织绩效提供了参考依据和数据借鉴。     

Self-drive tourism attributes: influences on satisfaction and behavioural intention

Self-drive tourism differs from other types of tourism in many aspects, such as the importance of accessibility by roads and the attractiveness of multiple destinations along the way. Little research has investigated self-drive tourism attributes systematically. Moreover, the consequences of these attributes, namely, tourist satisfaction and post-visit behavioural intentions, have not been examined. This study aims to fill these gaps. The study is based on 377 observations collected in Xinjiang Province, China, which is a popular domestic self-drive tourism destination. Results show that two factors of self-drive tourism attributes explain the data well. Destination characteristics positively affect tourist satisfaction but driving conditions do not. Tourist satisfaction positively leads to the intention to recommend and revisit. This study contributes to the body of knowledge in the area of self-drive tourism and suggests implications to practitioners.     

关于当前人民币升值问题的思考

从中长期来看,我国经济的发展水平和基本特征决定了人民币以保持基本稳定为好。当前应该继续加强和改善宏观调控,运用多种手段促进国际收支趋于平衡,进一步推进汇率形成机制改革,同时可以考虑适度放宽人民币汇率的波动幅度,以减轻升值压力和预期,保持货币政策的相对独立。     

The psychological process of travel destination choice

ABSTRACT

This paper reviews literature on travel destination choice and organizes these studies systematically. A “cell–system” structure is proposed to describe the psychological process of travel destination choice. When forming decisions on vacations, tourists gather information on potential destinations and evaluate visit intentions among potential destinations (“cell”). The visit intentions are successively compared while information is updated in the process (“system”). The “cell–system” structure provides a clear view of the psychological process of travel destination choice. Empirical studies based on the structure can provide further insights into why and how tourists choose travel destinations.     

Creating a scale for assessing socially sustainable tourism

As destinations absorb ever increasing number of visitors, destination managers become progressively more concerned about the longer term viability of tourism from a resident's perspective. However, few studies have examined the application of real-time social sustainability within tourism, particularly how to measure impacts on social sustainability. This study outlines the development of a valid and reliable scale – the Scale of Social Sustainability (SSS) – for tourism that provides an assessment of social sustainability in destination settings. A 10-step procedure was developed drawing upon the related literature. A telephone poll-based survey generated 1839 valid responses from Hong Kong residents. Hong Kong's growing popularity as a destination provides a rich array of host–guest conflict situations. Dimensionality was identified using exploratory and confirmatory factor analyses. Construct validity, reliability, and stability were assessed, and found good, showing that the scale could be used by other destinations worldwide. The theoretical and managerial implications of the scale are discussed, including options for annual surveys giving policy-makers alerts before situations worsen. Detailed host resident viewpoints and the large scale of the survey can help local residents be informed about tourism development and better involved in the policy formation process.     

对国际金融教材的比较研究

通过对国内五种经典国际金融教材的比较分析发现,我国主要的国际金融教材遵循的是与国际上主流金融学相一致的微观化的发展趋势。高校选择国际金融教材,应最能反映当前时代特点并与理论发展相一致,充分考虑不同的培养目标,结合不同专业的课程开设情况,有针对性地选择不同的教材。     

儒家文化与企业家精神——项流行病学研究

自汉代以来,儒家文化都是中国传统文化的主体,潜移默化地塑造了人们的传统信念和价值观,对人们的经济决策有着重要影响.文章基于2014年和2016年中国劳动力动态调查(CLDS)数据,使用流行病学方法识别了儒家文化对企业家精神的影响.研究发现:(1)以明清进士密度衡量的儒家文化显著地提高了劳动力的创业概率,这在控制了劳动力出生地和14岁居住地经济条件、对样本进行反复清洗以及使用历代书院密度衡量儒家文化的检验中都是稳健的.(2)选取文庙建庙时长和到山东曲阜的距离作为儒家文化的工具变量,工具变量方法估计依然表明儒家文化显著地提高了劳动力的创业概率.(3)异质性分析表明,儒家文化显著地提高了"自雇"型创业和低教育组劳动力创业的概率,而对"雇主"型创业和高教育组劳动力创业概率的影响不显著;同时,外来文化的冲击可能在一定程度上削弱了儒家文化对劳动力创业概率的促进效应.上述结论说明,弘扬优秀的儒家文化有助于促进中国企业家精神的繁荣与发展,深入推进"大众创业,万众创新"的国家战略.     

西部资源型地区产业发展与溢出效应：一个时空双维度研究

资源型地区是西部工业经济的有效依托,也是西部大开发战略实施要地。采用马尔科夫链模型和产业结构高级化指数,基于时空双维度,探究2008-2019年中国西部资源型地区产业发展进程;通过建立空间杜宾模型,分析地区产业发展空间溢出效应,并运用回归模型偏微分方法对溢出效应进行分解。结果显示：研究期间西部资源型地区产业综合发展水平呈缓慢提升态势,且稳定性偏弱;地区产业发展水平空间差距逐步扩大,产业高级化水平非均衡性特征显著;地区产业发展空间溢出效应显著,生产要素投入与产业结构优化对相邻地区产业发展存在差异性影响。为促进西部资源型地区经济高质量发展,提出应完善空间治理、发挥各地区比较优势、形成优势互补、促进各类要素合理流动和高效聚集,增强创新发展动力等建议。