资产专用性对确权后农地流转的影响

农地确权后,农户对农地转出多持中立或否定的态度,这与产权明晰促进交易的产权理论大相径庭。文章探讨了资产专用性对确权后农地流转的作用机理,并运用吉林省9市1444个农户数据对其进行实证分析。结果表明：农地确权后,土地资产、农业资产、地理位置以及人力资本等专用性抑制农户转出农地,农业资产和人力资本专用性抑制农户提高农地租金,而社会资本专用性则分别存在促进作用;农业资产、地理位置以及人力资本等专用性抑制农户更长时间转出农地;农业资产专用性对转出农地须要签订合约具有抑制作用,而地理位置专用性则存在促进作用。     

何休《公羊解诂》质疑略说

何休的《公羊解诂》是公羊学的奠基之作,却也遭到了后世学者很多的批评。主要的批评路径有三条,一为订正训诂,一为据《梁》和《左传》批评《解诂》,一为依照自造之体系批评《解诂》。这里着重分析了后两种路径,指出了其中的方法论错误,并以为批评何休之学说,应当从其体系内部入手,发掘其中的义理失误问题,并举出两例,详加辨析。     

Subgroup Analysis with Time‐to‐Event Data Under a Logistic‐Cox Mixture Model

Subgroup detection has received increasing attention recently in different fields such as clinical trials, public management and market segmentation analysis. In these fields, people often face time‐to‐event data, which are commonly subject to right censoring. This paper proposes a semiparametric Logistic‐Cox mixture model for subgroup analysis when the interested outcome is event time with right censoring. The proposed method mainly consists of a likelihood ratio‐based testing procedure for testing the existence of subgroups. The expectation–maximization iteration is applied to improve the testing power, and a model‐based bootstrap approach is developed to implement the testing procedure. When there exist subgroups, one can also use the proposed model to estimate the subgroup effect and construct predictive scores for the subgroup membership. The large sample properties of the proposed method are studied. The finite sample performance of the proposed method is assessed by simulation studies. A real data example is also provided for illustration.     

New recursive estimators of the time-average variance constant

Estimation of the time-average variance constant (TAVC) of a stationary process plays a fundamental role in statistical inference for the mean of a stochastic process. Wu (2009) proposed an efficient algorithm to recursively compute the TAVC with \(O(1)\) memory and computational complexity. In this paper, we propose two new recursive TAVC estimators that can compute TAVC estimate with \(O(1)\) computational complexity. One of them is uniformly better than Wu’s estimator in terms of asymptotic mean squared error (MSE) at a cost of slightly higher memory complexity. The other preserves the \(O(1)\) memory complexity and is better then Wu’s estimator in most situations. Moreover, the first estimator is nearly optimal in the sense that its asymptotic MSE is \(2^{10/3}3^{-2} \fallingdotseq 1.12\) times that of the optimal off-line TAVC estimator.     

国家独立后的困境——从后殖民批评视角解读《碎片》

阿依·克韦·阿尔马赫是20世纪影响力最大的黑人移民作家之一。其具有半自传性质的作品《碎片》讲述了海归巴顿回国后遇到的来自社会和家庭的双层孤立。从后殖民批评视角解读小说,通过分析主人公巴顿回国后遭遇的扭曲的等级观、价值观和权力观来揭露加纳独立后所遇到的严重社会问题,以及作者阿尔马赫对独立国家腐败、堕落的失望和哀其不幸怒其不争的复杂情绪。     

澳门旅游博彩形象的实证研究

澳门博彩业回归后迅速发展,随著"澳门历史城区"被列入"世界文化遗产",该行业更出现前所未有的繁荣景象。然而,除了"赌城"的形象外,澳门的旅游博彩形象还有甚么元素呢?本文结合了"结构法"与"非结构法",针对澳门旅游博彩形象进行问卷调查,来了解它的内涵及意义,并尝试提出一些适合澳门旅游博彩形象发展的建议,以利澳门这个"龙头"产业的可持续发展。     

生生不已而“含情契理”——方东美的生命本体论探微

在摸索如何实现中国哲学现代化的道路上,现代新儒家前三代学人大多都致意于重建形上学的努力,表现出自觉创构本体论的理论冲动和精神蕲向.作为现代新儒家之重镇,方东美没有如同其他人那样,承接宋明儒学以采取"新心学"或"新理学"的进路,而是归返于先秦原始儒家和原始道家并建立了"含情契理"的生命本体论.通过他探求"太初之指"、索寻宇宙人生之本体的过程,我们可以清楚地看到他由中入西,最后又援西归中的学思心路;同时,从中也能够见出由提出"生命"这一核心范畴,到依循"体用不二"的传统论证方式阐发其功用,以确证生命的本体论意义和地位,进而展开整个思想体系的逻辑发展进程.     

大型科研项目的风险管理流程与风险决策

针对大型科研项目风险管理的特点,设计了其风险管理流程;根据风险决策原理,结合实例探讨了灰局势决策法在大型科研项目中的应用,所获得的决策结果是进行风险处理的基础和重要依据,对风险管理实践有一定的指导意义。     

产权市场的外资并购分析

并购活动包括目标甄选、交易实施和企业整合三大步骤。由于证券市场的局限性和场外交易的风险性,产权市场将会成为外资并购理想的主要交易场所。文章以交易实施中的交易市场作为研究对象,重点阐述了外资并购在产权市场中的情况、问题和对策。