1930年代沪上文坛独特的“新感觉”--南洋华侨作家黑婴的“乡愁”书写

史称“新感觉派”后起之秀的黑婴是唯一一位跻身于1930年代中国主流文坛的南洋华侨作家。这位生于荷印棉兰，长于广东梅县，深造于“魔都”上海的新一代南洋华侨，在“民国时态”浓郁的南洋氛围中登陆沪上文坛。在此跨文化的激烈碰撞与深度融合中，黑婴经由“乡愁”的激发与引领，讲述了新一代南洋华侨青年的苦难、迷惘以及艰难的蜕变。今天看来，这种包含着独特生命体验和丰富历史痛感的文化乡愁，正是南侨作家黑婴在“华文文学”和“海派文学”的脉络之外，贡献给中国现代文学真正而独特的“新感觉”。     

Price bias and common practice in option pricing

Generally, the semiclosed-form option pricing formula for complex financial models depends on unobservable factors such as stochastic volatility and jump intensity. A popular practice is to use an estimate of these latent factors to compute the option price. However, in many situations this plug-and-play approximation does not yield the appropriate price. This article examines this bias and quantifies its impacts. We decompose the bias into terms that are related to the bias on the unobservable factors and to the precision of their point estimators. The approximated price is found to be highly biased when only the history of the stock price is used to recover the latent states. This bias is corrected when option prices are added to the sample used to recover the states' best estimate. We also show numerically that such a bias is propagated on calibrated parameters, leading to erroneous values. The Canadian Journal of Statistics 48: 8–35; 2020 © 2019 Statistical Society of Canada     

Visualization of generalized mean estimators using auxiliary information in survey sampling

Abstract

The mean estimators with ratio depend on multiple auxiliary variables and unknown parameters in a finite population setting. We propose a new generalized approach with matrices for modeling the mutivariate mean estimators with two auxiliary variables. Our approach brings naturally a graphical analysis for comparing mean estimators.     

虚拟空间交织的取向原则

虚拟空间交织是人们常用的思维与认知方式之一。本文通过对交织及其原则的介绍,描述了虚拟空间交织的运作,指出虚拟空间交织构建中主观取向的原则应为最佳关联。     

ALL-BIAS DESIGNS FOR POLYNOMIAL SPLINE REGRESSION MODELS

Polynomial spline regression models of low degree have proved useful in modeling responses from designed experiments in science and engineering when simple polynomial models are inadequate. Where there is uncertainty in the number and location of the knots, or breakpoints, of the spline, then designs that minimize the systematic errors resulting from model misspecification may be appropriate. This paper gives a method for constructing such all‐bias designs for a single variable spline when the distinct knots in the assumed and true models come from some specified set. A class of designs is defined in terms of the inter‐knot intervals and sufficient conditions are obtained for a design within this class to be all‐bias under linear, quadratic and cubic spline models. An example of the construction of all‐bias designs is given.     

福建宁德畲族(聚居区)文化遗产保护与利用的调查报告

福建宁德畲族文化作为中华畲族文化的主源头之一,在团结与凝聚当地和国内外的畲族同胞,增进人们对畲族历史文化和现实了解方面发挥了不可替代的纽带作用,它与聚居区内景色秀丽的山水风光相映成趣,具有潜力巨大的旅游价值与产业价值。但近期以来,该地畲族传统文化也面临着逐渐失传的现实危机。抓紧实施抢救与发展畲族文化遗产系统工程的各项具体工作,对于继承畲族优秀传统文化,促进地方自然生态、文化生态与经济的和谐发展具有重要的意义。     

Preparing Parents for Adoption: An Agency Experience

To prepare for the complexities of family formation, 78 prospective adoptive parents participated in Pre-Adopt, a psychosocial educational orientation program offered by one private nonprofit agency. The five-session curriculum included an overview of adoption policies and procedures, discussion of the child placement process, exploration of couples' adoption concerns and expectations about child characteristics, information about adoption laws and birth-parent/child searches, and examination of anticipatory fantasies about birth parents. Program evaluation yielded statistically significant and clinically meaningful findings about changes in emotional readiness to adopt, parenting knowledge, and satisfaction with group participation, adoption policies and agency practices. Practice implications are considered.     

西部产业集群发展的制度分析

从制度上看,区域产业集群发展具有自发性或诱致性、以市场制度为基础密切联系而形成核心竞争力、根植性等制度特征。西部产业集群发展,具有优惠的区域政策和制度后发优势,但也面临一定的正式制度和非正式制度约束,如与市场经济相左的思想道德观念、偏重自然资源的路径依赖、地方政府职能的错位、中央投资体制分割,等等。针对这些约束,必须采取相应的制度创新。     

中国企业并购的新趋势——丽珠集团股权之争的个案分析

企业并购是企业因为激烈的市场竞争而主动选择的发展战略。长期以来,我国绝大多数企业并购都是在政府部门牵线搭桥和具体实施的,政府在企业并购过程中起着主导作用。2002年3月至5月期间,太太药业和东盛集团通过我国证券市场对丽珠集团股权争夺进行的企业并购,呈现出我国企业并购的新趋势。     

对北光集团加强子公司财务管理的案例分析

随着市场经济的建立与发展,企业所有制形式和组织结构发生了巨大的变化,特别是规模化企业集团得到了迅猛发展。近年来,在企业集团的各子公司财务管理中发现了一些不容忽视的问题,本文从北光集团的实际情况出发,分析了目前北光集团对子公司实施财务管理中的成绩及不足,并提出了北光集团加强对子公司财务管理的改进措施。