农户减少化肥用量和采用有机肥的意愿研究——基于洱海流域上游面源污染防控的视角

[目的]过量施用化肥导致水体富营养化是造成洱海流域上游面源污染的主要原因之一,调查分析农户减少化肥用量和采用有机肥的意愿有助于了解其调整施肥结构的行为。当前研究忽视了农户减少化肥施用强度和采用有机肥的意愿间的替代性,未能开展联立研究。[方法]基于洱海流域上游397个水稻种植户的问卷调查数据,通过Bivariate-Probit模型对农户减少化肥用量和采用有机肥两种意愿进行分析。[结果]年龄负向影响农户减少化肥量的意愿,农户对有机肥好处的认知正向影响其减少化肥量的意愿,农户参加农业社会化服务对其减少化肥用量和采用有机肥的意愿均产生正向影响,相比之下,对农户采用有机肥意愿的促进作用更大。[结论]引导农户参加农业社会化服务以及加强宣传和培训,提高农户对有机肥作用的认知可能是加强其减少化肥用量和增加有机肥施用量意愿的有效途径。     

页岩气储层录井配套技术应用新进展

论文主要分析了页岩的地质情况,结合其特征,分析气储层的特殊性。论文通过总结当前存在的问题,分析与总结经验,探究页岩气储层录井技术的要点。论文提出页岩气储层的岩石内硅质成分占比较高,且钙含量也比较高,岩石既坚硬又脆弱,在钻井阶段,要使钻井速度保持在较高水平。通过合理使用综合气相色谱仪,可发现油气开发过程中存在的问题,其应用优势比较明显。     

Optimal forecast evaluation: fertilizer prices

High fertilizer price volatility makes production planning and inventory management difficult, so accurate fertilizer price forecasts would be beneficial. This article evaluates commercial forecasts for urea and diammonium phosphate (DAP) prices based on forecast accuracy and optimal forecast properties. Most forecasts pass the tests, but forecasts for the US New Orleans urea and the US Gulf DAP markets, in particular, do not and thus show potential to be improved.     

Knowledge sharing in hospitality organizations: A meta-analysis

Knowledge sharing plays a crucial role in how hospitality organizations gain a sustainable competitive advantage. Using meta-analytic examinations based on 275 relationships from 54 primary studies, the current study proposes an integrative framework at both an employee and organizational level. Accordingly, this study comprehensively investigates the relations of knowledge sharing with its antecedents and consequences at both levels by synthesizing effect size estimates. Also, this study supplementarily conducts full-information meta-analytic structural equation modeling to examine the causality of proposed relationships. This study further examines the moderating roles of certain sub-dimensions of knowledge sharing and regions in each relationship of knowledge sharing with its predictors and outcomes. Based on findings derived from robust meta-analytic procedures, the authors identify several important patterns of findings. This study provides an advanced understanding of the nomological network of knowledge sharing in the hospitality organizational context.     

Conceptualization of e-servicescapes in the fitness applications and wearable devices context: Multi-dimensions,consumer satisfaction,and behavioral intention

Based on the environmental psychology theory, this research conceptualizes and investigates the dimensions of e-servicescapes, and examines how each dimension influences fitness application and wearable device users’ emotions, satisfaction, and behavioral intention to continuously work out via the technology. This study employed three waves of surveys within the United States to collect data (N = 343), and conducted a path analysis to rigorously assess the proposed paths between identified constructs. The empirical findings revealed the significant determinants of negative emotion (i.e., usability, security, customization, entertainment value, interactivity, originality of design, relevance of information, and social factors) and positive emotion (i.e., usability, customization, entertainment value, interactivity, and relevance of information). Also, satisfaction was significantly impacted by both positive emotion and negative emotion, and behavioral intention was significantly influenced by positive emotion and satisfaction. Based on these findings, this study suggests theoretical (i.e., classification of the e-servicescape dimensionality and integration of the environmental psychology theory with the two-factor theory of motivation, focusing on a digital environment) and practical implications (i.e., ways to increase levels of consumer satisfaction with the technology and intention to continuously exercise with the technology) for scholars and practitioners in the fitness and mobile application/wearable device industries.     

无人机遥感系统的研究进展与应用前景

对于无人机遥感来说,融合了无人机技术与遥感技术。在无人机遥感技术应用的过程中,涵盖了诸多不同类型的先进技术,比如,无人机驾驶飞行技术、通讯技术、遥感传感器技术等,存在着显著的智能化、自动化等不同方面的特征,能够迅速得到相关资源,并且系统掌握国土、环境等不同方面的信息,然后加以实时化处理,通过建模与科学分析,能够制定出无人机遥感技术运用的具体策略,凸显出其良好的功效。本文针对无人机遥感系统的研究进展进行了详细地分析,同时说明了无人机遥感系统的应用前景,进而对有关研究人员形成一定的启发。     

非住宅建设用地使用权续期规则的思考

研究目的:分析非住宅建设用地使用权续期活动的规则与性质,提出完善续期规则的建议。研究方法:规范分析法,比较分析法。研究结果:非住宅建设用地使用权的续期规则存在疏漏,使续期申请的起止期间难以清晰界定,以私法视角理解续期活动也不妥当。研究结论:续期是申请人取得重新设立的建设用地使用权的过程,因此要求在续期过程中必须清晰界定续期权利的设立与灭失期间,保证续期或救济得以顺利进行。续期也是获得行政特别许可的结果,应当采用协议出让方式予以确认。     

Exploring the interdisciplinary potential of the Agenda2030—Interactions between five Danish societal demands for sustainable land use

This article explores the potential of the SDG framework for interdisciplinary research. The aim is to illustrate the process of creating a shared platform of operation by the clarifying the positive and negative interactions between societal demands for land use on a national and local level. The research question is answered by making use of the systemic approach introduced by Niklas Luhmann including his arguments about autopoietic communication systems reproducing themselves. An interdisciplinary research group is firstly applying the SDG framework to the demands for sustainable land use by activating the land consolidation in Denmark. By doing so a ‘national framework’ anchored in the SDG framework is created. Secondly, the national framework is applied to a multifunctional land consolidation project in a Danish case area. The findings from the mapping of interactions between societal demands on a concrete case area revealed that some indicators and societal demands are more prone to conflicts than others but also on the local level there may be variations. Thus, a localised and contextualised SDG framework has shown useful insight for future projects on sustainable land use including land consolidation projects. The paper concludes that the SDG framework may be used for facilitating interdisciplinary research, however there is also a need for guidelines and examples on how to integrate the framework in academia. The paper offers a suggestion for integrating the Agenda2030 and the SDG framework in projects about sustainable land use.     

化肥价格变化对粮食价格的影响研究--基于省际动态面板数据模型的系统GMM检验

基于我国粮食价格与化肥价格变动趋势的分析,运用2006年~2017年省际动态面板数据模型和系统GMM方法,实证检验了化肥价格变动对粮食价格的影响。结果表明:化肥价格变动对粮食价格存在显著的正向影响,在考虑化肥价格影响下,农业生产服务、种子等农资价格对粮食价格也存在显著的正向影响,机械化农具和农药价格对粮食价格不显著,"价补分离"政策对粮食价格存在显著负向影响。因此,在化肥减量行动背景下,适度调控化肥价格,避免化肥价格上升挤占粮农利润,大力发展农业生产性服务业和种子业,继续实行"价补分离"政策,提高补贴精准性,减少农民投入成本。     

创业型中小企业财务管理的创新与应用研究

在国民经济高速发展的推动下,我国经济市场环境越来越好,企业的发展空间逐渐扩大。因此,诞生了很多创业型企业,在我国的经济活动中扮演着十分重要的角色。但是创业型企业由于经营经验少、管理制度缺失以及组织结构不完整等,在财务管理方面存在一些问题亟待解决。基于此,论文从创业型中小企业入手,对财务管理的问题、创新及应用策略进行了研究,以供参考。