中国省际农村居民收入分配的动态演变:2001-2009年

近十年是我国经济发展变化最快的一段时期,然而“三农”问题日益突出,农民收入是亟待解决的根本问题。本文利用趋同检验、核密度估计以及转移矩阵等方法刻画了我国省际农村居民收入分配的动态演变。实证分析表明,我国贫困地区农村居民收入水平比富裕地区有更高的增长率,从而导致省际农村收入差距呈逐渐缩小趋势,但不同省份的相对收入状况的变动却有所不同。     

中国地区收入与二氧化碳排放的联合动态性研究

本文分析了社会福利的两个主要因素—收入和二氧化碳排放。在收入和二氧化碳排放关系分析的基础上,利用马尔科夫链分析了收入-二氧化碳排放的联合状态转移机制。研究结果表明,收入是影响二氧化碳排放的重要因素,高收入对应着高排放。低收入水平地区倾向于通过增加排放来带动经济发展。目前,高收入-高排放处于稳定状态,但从长期看,该状态的地区比重很小。我国没有进入低收入-高排放的收入环境陷阱。     

Notes on L(1,1) and L(2,1) labelings for n-cube

Suppose \(d\) is a positive integer. An \(L(d,1)\) -labeling of a simple graph \(G=(V,E)\) is a function \(f:V\rightarrow \mathbb{N }=\{0,1,2,{\ldots }\}\) such that \(|f(u)-f(v)|\ge d\) if \(d_G(u,v)=1\) ; and \(|f(u)-f(v)|\ge 1\) if \(d_G(u,v)=2\) . The span of an \(L(d,1)\) -labeling \(f\) is the absolute difference between the maximum and minimum labels. The \(L(d,1)\) -labeling number, \(\lambda _d(G)\) , is the minimum of span over all \(L(d,1)\) -labelings of \(G\) . Whittlesey et al. proved that \(\lambda _2(Q_n)\le 2^k+2^{k-q+1}-2,\) where \(n\le 2^k-q\) and \(1\le q\le k+1\) . As a consequence, \(\lambda _2(Q_n)\le 2n\) for \(n\ge 3\) . In particular, \(\lambda _2(Q_{2^k-k-1})\le 2^k-1\) . In this paper, we provide an elementary proof of this bound. Also, we study the \(L(1,1)\) -labeling number of \(Q_n\) . A lower bound on \(\lambda _1(Q_n)\) are provided and \(\lambda _1(Q_{2^k-1})\) are determined.     

全方位、立体性数据质量概念的建立与实施

 数据质量不仅仅指“准确性”,还包括诚信、方法的健全性、准确性和可靠性、适用性、可获得性及质量前提。国际上通行的数据质量概念及国际统计标准是构建中国统计框架的惟一参照系,也是保障中国数据质量的强有力技术支持。     

垂直专业化背景下进口中间品对制造业增加值率的影响

本文从进口中间品的角度探究了垂直专业化分工对增加值率的影响机制,并深入分析了进口中间品对增加值率影响的行业异质性和进口来源地异质性。结果表明,第一,进口中间品种类增加提高了中国制造业增加值率,出口依存度较低、垂直专业化较高行业进口中间品种类的促进作用显著,来源于发达经济体进口中间品种类具有倒“U”型影响。第二,进口中间品数量的增加同样提高了中国制造业增加值率,但这种促进作用具有“天花板效应”,且在垂直专业化较低行业中不显著。第三,垂直专业化加深将通过进口中间品数量的增加所产生的“学习效应”促进增加值率的提升,而当进口中间品数量无限扩张时,垂直专业化又将通过“竞争效应”的负向影响抑制增加值率的上升。而垂直专业化分工并未有效利用进口中间品种类效应对增加值率的积极影响,因此在未来垂直专业化分工路径选择中要提升进口贸易的扩展边际,适当推动进口贸易从数量型扩张向种类型扩张转变,推进贸易转型升级,摆脱“低端锁定”效应,提升在垂直专业化分工中的受益。     

民俗与人情——论沈从文《萧萧》

沈从文的作品构筑了湘西的民俗风情画及人性善美面所展现的乡土人情,以此而言,的确和老舍、赵树理等出身于民间的作家一样有着描绘民间文化自由自在精神的本质。这些作家都善于运用民俗承载民间充满着清新刚健的生命情趣与活力;然而民俗并非全然正面,人情也未必美善。《萧萧》一文内容述及封建社会对女性带来极大精神创伤的“童养媳”习俗及民间以私法惩罚情感出轨者的陋习。沈从文综合了风土描写、人道主义与知识分子的批判,从“山山水水和人物风俗”的美善视角书写出《萧萧》中的悖反与颠覆。因成长环境使然,他善于将民俗风土运用于创作中,再加上受到来自周作人“人学”的影响,对社会上有违人道的事件有所反映。《萧萧》在沈从文“追求美善人性”的思考下,综合了看似矛盾的陋俗与乡土中的良善人情。     

Integer-magic spectra of sun graphs

Let A be a non-trivial Abelian group. A graph G=(V,E) is A-magic if there exists a labeling f:E→A∖{0} such that the induced vertex set labeling f ⁺:V→A, defined by f ⁺(v)=∑f(uv) where the sum is over all uv∈E, is a constant map. The integer-magic spectrum of a graph G is the set IM(G)={k∈ℕ∣G is ℤ _k -magic}. A sun graph is obtained from an n-cycle, by attaching paths to each pair of adjacent vertices in the cycle. In this paper, we investigate the integer-magic spectra of some sun graphs. Dedicated to Prof. Frank K. Hwang, on the occasion of his 65th birthday. Supported by Faculty Research Grant, Hong Kong Baptist University.     

Power in consensus: Legitimacy,global value chains and inequality in telecommunications standard-setting

Power is central to GVC research, but the concept is usually restricted to ‘direct’ market power that generates rents. This paper examines ‘diffuse’ conceptualizations of power in GVCs that focus on social construction, arguing that they exist along a continuum from ‘fractured’ to ‘encompassing’. Then, empirically, it shows how different types of power intermix in telecommunications standard-setting from 1999 to 2021, using a comprehensive dataset of every finalized work item in 3GPP. Given powerful network effects in telecommunications, the industry is ripe for monopolistic rents and unequal value capture on a global scale. However, these are attenuated by a layering of power relations, and particularly, an intermediary form of social construction – legitimacy – which is the primary driver of telecommunications standard-setting, and a new type of constitutive power in GVCs, alongside governmentality and hegemony. This is illustrated by focusing on two major shifts in legitimacy in 3GPP – the rise of Huawei and network operators. The paper shows how power becomes layered with collective forms of power partially neutralizing inter-firm forms of dyadic power, which attenuates monopolistic value capture.     

Mental health in vietnam and the move to incorporate social work: A mixed methods study of staff perceptions and expectations

In 2010, Vietnam established social work as a profession. As part of their strategic plan, the government aims to incorporate social work into existing hospitals and health care facilities in the country, including psychiatric hospitals and mental health care centers. This paper, based upon survey and focus group data from 194 people working in three major mental health facilities in Hanoi, explores direct care staffs’ perceptions of this historic incorporation of social work, with a particular eye to the benefits and challenges of the transition. Results show most staff members thought social workers would provide great support to the many unmet needs of their largely underserved and impoverished patients. They also viewed social workers as a potential resource to the treatment team by reducing work overload. Existing staff, however, were less attuned to the clinical functions of social workers in mental health settings, often equating social work with community development and social movements. Some were concerned about social workers taking on their tasks; others about new social workers being hindered by the professional hierarchy in which doctors were placed at the top. Successful integration of social workers will hinge on strong support from policy-makers and leaders of mental health systems.     

Extramarital Sex Among Vietnamese Married Men: Results of a Survey in Urban and Rural Areas of Northern and Southern Vietnam

Research on extramarital sex (EMS) is commonly conducted from a perspective that implicitly understands this behavior as a violation of the marital relationship. In contrast, Vietnamese cultural norms have, at some points in history, condoned if not outright encouraged EMS in the name of preserving family lineage. Yet little is known about the prevalence of EMS among contemporary Vietnamese men and its association with marriage quality. This is a notable gap, given the enormous sociocultural and ideological shifts the country has experienced over the past several decades. Drawing upon a sample of 126 married men (Mean age = 45.56; SD = 10.52) surveyed in urban (Hanoi and Ho Chi Minh City) and rural areas (Ha Tay and Can Tho) in Vietnam, we examined the relationship between EMS and geographic region, demographic characteristics, sexual values, quality of marriage, and sexual satisfaction within marriage. Our results show that geographic location had a strong impact on EMS, while most marital relationship quality variables did not impact the odds of EMS for married men in Vietnam.