调整房地产供给结构积极拉动内需

近年来,我国房价不断推高,影响了居民的合理消费,抑制了部分内需的发展,已经成为一个严重的社会问题。如何有效调控房地产的发展已经成为一个亟待突破的难题,根据现实情况,我国合理的房地产供给结构应是以保障性安居工程为主。即民生实用性住房,应成为房地产供给结构的重要组成部分。通过调整房地产供给结构来积极拉动内需,应成为解决房地产难题的核心内容。     

礼仪模特培训中五元智能理论应用与探索——以黑龙江大学国际商务社交礼仪课程为视角

礼仪模特代表着国家或一个城市的形象。“腹有诗书气自华”,礼仪模特能够有效地展现内在的个人修养、风度和个性魅力,体现着对社会的融入和认知程度、价值观、审美、教养、自重自尊等。它是艺术美学、伦理学的分支,同时也是表演学、戏剧理论、行为学、人类学、沟通心理学、演讲学、社会学等学科的交叉,是一门理论性与实践性较强的方法性学科。黑龙江大学在运用“学导式”教学法的基础上,提出的五元智能理论培养模式已经成为独具黑龙江大学学生特色的、适合哈尔滨礼仪模特课程特点、教学风格的、基于全球化语境下礼仪模特教学中的学导式教学模式,为实施“哈尔滨模特美丽时尚产业名城”奠定了坚实基础。     

ROBUST ASSET ALLOCATION WITH BENCHMARKED OBJECTIVES

In this paper, we introduce a new approach for finding robust portfolios when there is model uncertainty. It differs from the usual worst‐case approach in that a (dynamic) portfolio is evaluated not only by its performance when there is an adversarial opponent (“nature”), but also by its performance relative to a stochastic benchmark. The benchmark corresponds to the wealth of a fictitious benchmark investor who invests optimally given knowledge of the model chosen by nature, so in this regard, our objective has the flavor of min–max regret. This relative performance approach has several important properties: (i) optimal portfolios seek to perform well over the entire range of models and not just the worst case, and hence are less pessimistic than those obtained from the usual worst‐case approach; (ii) the dynamic problem reduces to a convex static optimization problem under reasonable choices of the benchmark portfolio for important classes of models including ambiguous jump‐diffusions; and (iii) this static problem is dual to a Bayesian version of a single period asset allocation problem where the prior on the unknown parameters (for the dual problem) correspond to the Lagrange multipliers in this duality relationship. This dual static problem can be interpreted as a less pessimistic alternative to the single period worst‐case Markowitz problem. More generally, this duality suggests that learning and robustness are closely related when benchmarked objectives are used.     

MCMC ESTIMATION OF LÉVY JUMP MODELS USING STOCK AND OPTION PRICES

We examine the performances of several popular Lévy jump models and some of the most sophisticated affine jump‐diffusion models in capturing the joint dynamics of stock and option prices. We develop efficient Markov chain Monte Carlo methods for estimating parameters and latent volatility/jump variables of the Lévy jump models using stock and option prices. We show that models with infinite‐activity Lévy jumps in returns significantly outperform affine jump‐diffusion models with compound Poisson jumps in returns and volatility in capturing both the physical and risk‐neutral dynamics of the S&P 500 index. We also find that the variance gamma model of Madan, Carr, and Chang with stochastic volatility has the best performance among all the models we consider.     

服务业发展与产业结构优化关系的分析

发展服务业是产业结构不断优化的助推器,也是优化产业结构的主要手段,而产业结构的优化也为服务业的发展提供了的空间和环境,反过来也促进服务业的发展。产业结构优化的过程就是服务业不断发展的过程,产业结构的不断优化有利于服务业的发展,服务业的发展推进产业结构的整体优化,并能够带动其他产业的发展。     

简析《人到中年》的创作

<人到中年>是一篇优秀的中篇小说.其无论是在艺术结构,还是人物形象的刻画上,都是很成功的.小说不仅通过塑造陆文婷等人物形象表现了中年知识分子的广阔胸襟,而且也由此提出让人思考的严肃问题.     

洞庭湖生态经济区社会-生态景观恢复力测度与影响机理

为提高区域恢复力状态、实现可持续发展,以洞庭湖生态经济区为研究对象,选用改进TOPSIS法,探究生态、社会、生产子系统及其综合恢复力的时空分布特征及其驱动机理。研究结果表明：2000—2010年,研究区恢复力状态基本呈现下降趋势,至2018年恢复力状态回归上升趋势;空间分布上,综合恢复力高值集中分布,低值分散分布;恢复力影响因子与恢复力状态之间为线性关系,应采取有效措施,促进区域可持续发展。     

Vertical Specialization and Trade Growth in Northeast Asia

As the global economy has become further integrated, the international production chain has become more sophisticated, with diversified stages of production located in different countries. Economic theorists have argued that the fragmentation of the global production chain is partly attributable to the high growth in international trade over the past several decades. In this study, we examine vertical specialization in China, Japan and Korea, and its contribution to these nations' trade. Using a multilevel model, it is illustrated that vertical specialization has encouraged increases in trade among all three countries. In particular, China's outcome is remarkable considering how recently it became a member of the WTO.     

我国个人所得税税制设计探讨

我国个人所得税税制的改革应以调节个人收入分配差距为主要目标,遵循能力赋税与征收便利的原则。个人所得税税制改革应向综合课税迈进,以家庭为纳税单位,设计统一多级超额累进税率,完善税前扣除体系,充分发挥其作为社会主义市场经济条件下再次分配环节中调节收入分配的杠杆作用。     

水利投入对安徽省经济增长的拉动作用

通过建立扩展的Solow模型,计算安徽省水利投入对经济增长的贡献。结果表明,安徽省水利投入对国民经济增长的拉动作用较大,对经济产出的贡献率在10%左右,说明水利投入在国民经济发展中起着非常重要的作用。