基于VR技术的油井压裂仿真系统的研制

目前对油井压裂技术培训主要是通过文字、图片等资料。油井压裂属于地下工作,员工无法真实地感受到地下工具的工作状况和状态。该系统采用虚拟现实技术将管柱压裂的整个过程以及压裂过程中各种工具的受力和变形情况进行计算机模拟,从而大大增加员工学习的兴趣和效率,进而提高管柱压裂过程的管理水平和实践水平。     

国土空间规划与土地要素市场化改革：引入“治理均衡器”和“电路图”的具象化协同机制设计

研究目的：本文引入“治理均衡器”和“电路图”对国土空间规划与土地要素市场化改革进行具象化分析,探讨规划和市场的互动机理,构建两者互动的协同机制,以便更好地发挥有为规划和有效市场的作用。研究方法：文献研究和电路分析。研究结果：（1）国土空间规划对土地要素市场的供给、需求和价格变动发挥调控和引导作用,而土地要素市场对国土空间规划具有基础性和支撑性作用;（2）国土空间规划与土地要素市场化改革的非均衡风险主要包括规划缺位或刚性过强导致的“断路”、市场失灵导致的“短路”和规划市场供需错位导致的“内耗”;（3）参考滑动变阻器、二极管、电磁继电器、选择开关等治理均衡器元器件,可以针对性设计出“刚性底线+弹性空间”、“规制调控+规范引导”和“规划均衡+市场决定”等治理协同机制。研究结论：通过引入“治理均衡器”和“电路图”分析框架,能够具象化地展现国土空间规划与土地要素市场化改革的互动机理和非均衡风险,进而通过“治理均衡器”元器件的选择,为不同情景下推进国土空间规划和土地要素市场化改革的统筹协同提供政策工具和治理手段,为协调两大改革的良性互动和整体推进提供参考和建议。     

The real value of China’s stock market

What capital allocation role can China’s stock market play? Counter to perception, stock prices in China have become as informative about future profits as they are in the US. This rise in stock price informativeness has coincided with an increase in investment efficiency among privately owned firms, suggesting the market is aggregating information and providing useful signals to managers. However, price informativeness and investment efficiency for state-owned enterprises fell below that of privately owned firms after the postcrisis stimulus, perhaps reflecting unpredictable subsidies and state-directed investment policy. Finally, evidence from realized returns suggests Chinese firms face a higher cost of equity capital than US firms.     

Financial innovation,systematic risk and commercial banks’ stability in China: theory and evidence

We are dedicated to revealing the impacts of financial innovation and systematic risk on commercial banks’ stability in China, both theoretically and empirically. We established a theoretical model and derived a theoretical mechanism from this model revealing two distinctive patterns of the impacts determined by the profitability of financial derivatives: the impacts of financial innovation and systematic risk on banks’ stability in China are linear under the circumstances of a positive expected risk premium of financial derivatives; conversely, the impacts can be linear, U-shaped or cubic when the expected risk premium is negative. We make three propositions to analyse the patterns and conditions of these impacts in detail. In the empirical analysis, we do not focus only on the banking industry but also on individual commercial banks. The empirical results demonstrate that the impact of financial innovation on both the banking industry’s and most individual commercial banks’ stability are U-shaped, and the impact of systematic risk on the banking industry’s and on only one commercial bank’s stability are significantly linear, which confirms certain conditions mentioned in the theoretical propositions. Finally, the study’s conclusions are presented, and the contributions of the article to future study are also mentioned.     

企业改制改组所得税问题的研究

随着经济全球化步伐的加快,我国社会主义市场经济迅速发展,企业改制改组也以多种形式迅速发展,尤其以整体改制、并购(合并、兼并)、分立、资产转让等几种类型居多。本文通过借鉴国际上企业改组改制在税收上的成功做法,分析了我国目前企业改组改制所得税中存在的问题,并提出了一些具体的政策建议。     

知识产权强国建设背景下我国版权保护典型案例对版权产业发展的影响

版权强国是知识产权强国建设的应有之义,其为版权保护与版权产业发展带来了新的机遇与挑战。将版权保护有效性分析嵌入版权产业发展实践发现,版权保护典型案例与版权产业发展之间的关系处于割裂从而急需缝合的状态之中。因此,从逻辑进路出发阐释版权保护典型案例,认为可通过完善版权法律保护体系、激励版权人自愿登记等方式对版权产业发展产生影响。结合近10年来中国产业发展、典型案例发布数据,阐述版权保护典型案例与版权产业发展之间的关系,进而初步提出定量关系模型。在此基础上,对目前面临的问题提出针对性建议。     

工业过程的碳足迹评价与应用初探

碳足迹作为计算和评价人类活动的温室气体负荷的重要方法之一,已在世界范围内被广泛接受,并应用到越来越多的领域和评价实践。基于大规模工业生产是温室气体人为排放最主要来源的背景和工业过程温室气体控制对遏制气候变化的重要作用和意义,提出工业过程碳足迹的概念,分析工业碳足迹的内涵,讨论工业碳足迹的系统边界,构建工业碳足迹的核算框架,从产品、企业、区域三个层面对工业碳足迹的应用及其意义进行展望。     

Topic Features in Negative Customer Reviews: Evidence Based on Text Data Mining

The Review of Socionetwork Strategies - Several studies have focused on the effects of online negative customer reviews on sales, especially pertaining to Internet shopping and e-retailing....     

Housing market dynamics: Evidence of mean reversion and downward rigidity

House prices often exhibit serial correlation and mean reversion. Using two large panel datasets, this paper analyzes the price dynamics in two significantly different types of markets, cyclical (or volatile) and non-cyclical (or tame), by applying an autoregressive mean reversion (ARMR) model. Our results show that cyclical markets have larger AR coefficients than non-cyclical markets. As a result, house prices in cyclical markets tend to have larger price cycles. We also find that the upward periods have larger AR coefficients than the downward periods. This demonstrates that house prices are likely to overshoot the equilibrium in appreciating markets while experiencing downward rigidity during periods of decline. The model developed in this paper can produce a forecast with rich house price dynamics across markets. Our results can also be used to determine how house prices in overvalued markets will ultimately adjust.     

土地储备、入市影响与集体建设用地未来路径

未来集体建设用地的统一流转将经过农村建设用地市场自我培育、城乡建设用地市场部分对接和城乡统一建设用地市场三个可能发展时期。借鉴国外土地储备的经验,提出集体建设用地流转需构建全新城乡土地储备制度,引导土地储备从城市土地"供给方"向城乡建设用地市场"调控方"转变。