利用数学软件复原碎纸片的方法

研究了碎纸片的拼接复原问题,建立了合理有效的碎纸片拼接复原的数学模型；给出了数学软件实现自动拼接的具体算法；结合人工拼接得出复原图片；最后,对所给的拼接方法提出了改进方向.     

高含水期复杂断块油藏剩余油分布及挖潜

高含水期陆相复杂断块层状油藏剩余油分布复杂,油藏模拟难度大。马11复杂断块油藏在油藏精细描述基础上,利用动静态综合分析研究与密网格大规模数值模拟研究相结合,提高了剩余油研究精度和可信度;在此基础上,针对油藏剩余油分布特点并结合当前经济技术条件,部署实施了以调整井、调剖、堵水、油水井大修为主的剩余油挖潜方案,油藏含水上升率大幅度下降、采油速度上升、采收率提高了。     

Production systems and supplier selection: a multi-phase process model

Abstract

Purpose: This paper presents a combined multi-phase supplier selection model. The process repeatedly revisits the criteria and sourcing decision as the development process continues. This enables a structured adoption of product and production system innovation from strategic suppliers, where previously the literature purely focuses on product innovation or cost reduction. Design/methodology/approach: The authors adopted an embedded researcher style, inductive, qualitative case study of an industrial supply cluster comprising a focal automotive company and its interaction with three different strategic stamping suppliers. Findings: Our contribution is the multi-phased production and product innovation process. This is an advance from traditional supplier selection and also an extension of ideas of supplier-located product development as it includes production system development, and complements the literature on working with strategic suppliers. Specifically, we explicitly articulate the previously unreported issue of whether a supplier chosen for its innovation capabilities at the start of the new product development process will also be the most appropriate supplier during the production system development phase, when an ability to work collaboratively may be the most important attribute, or in the large-scale production phase when an ability to manufacture at low unit cost may be most important. Originality/value: The paper identifies a multi-phase approach to tendering within a fixed body of strategic suppliers which seeks to identify the optimum technological and process decisions as well as the traditional supplier sourcing choice. These areas have not been combined before and generate a valuable approach for firms to adopt as well as for researchers to extend our understanding of a highly complex process.     

The sexual in Chinese sociology: homosexuality studies in contemporary China

Through a meta‐literature review, this paper examines the changing contours of Chinese sociology of homosexuality in contemporary China. It unfolds the different theoretical orientations and methodologies that construct the modern male homosexual subject under major socio‐economic and political changes. Chinese sociology of homosexuality started in the reform era and has been dominated by Western knowledge production and the political ideology of the communist party‐state. Fused with the bio‐medical model and the state's modernization project in the 1980s–1990s, the sociological study adopted a functionalist and positivistic approach with survey‐based methodology in the main which focused on the etiology of homosexuality. A new transnational knowledge production of sociology of homosexuality has formed since the 2000s which has shifted towards a constructivist/ post‐structuralist approach and reflexive qualitative methodology. The new sociological study examines the rise of male (as well as female) homosexual identity in China, questions the hetero/homosexual binary and discusses how an individual makes sense of homosexual identity to form same‐sex intimate relationships. By tracing the epistemology of homosexuality in contemporary China, this paper rethinks the dominance of the Western construction and the role of the state in shaping the knowledge of homosexuality and proposes alternative spaces for theorizing Chinese sexual identities, desires and practices.     

适于DSP的模拟信号调制方式自动识别方法研究

提出一种适用于DSP的基于Bessel插值结构的正交数字下变频方案，可实现已调信号调制方式的自动识别。该方案能够实现提取信号的正交分量和同相分量，并且能够提取出较高精度的信号的基本参数，由此得到的特征参数可以准确地识别出信号的调制模式。最后，通过计算机和DSP仿真，证明了它的可行性。     

制造系统生产单元碳排放核算模型

制造业是我国国民经济的支柱产业，但也是环境污染物排放的主要来源、能源消耗主体和温室气体排放大户。制造系统高能耗、高物耗、高碳排放的加工过程是造成制造业碳排放量大的重要原因。生产单元作为制造系统的加工的主体，其碳排放量的核算是确定整个制造系统乃至制造业碳排放总量的关键。本文首先对生产单元的原材料、电能、辅助物料及废屑处理所引起的碳排放进行分析，确定生产单元的碳排放源；其次，产品合格率的不同会造成生产单元输入及输出的成品/半成品数量的差异，进而影响生产单元单位产品的碳排放量，在此基础上，综合考虑了原材料、电能、辅助物料及废屑处理的碳排放情况，构建了给定工艺流程下生产单元碳排放核算模型。最后，结合一汽车排气装置加工实例，分别核算加工过程中九个生产单元的碳排放量，验证了模型的可行性。     

土地流转中为什么会形成大量小农复制

土地流转是实现规模化经营的前提之一,然而土地流转中却出现大量小农复制,从而影响土地流转的质量和效果。运用12省(自治区)2 553份农户问卷,详细分析土地流转中小农复制的现状及其形成原因。研究发现：(1)农户流转耕地面积不大,转入户流转面积20亩及以下的约占总转入户数的60.3％,转出户流转面积5亩及以下的约占总转出户数的74.38％,转出户中仍然经营土地的约占总转出户数的74％。(2)农业分工发达使生产更加方便、文化传统形成路径依赖、禀赋效应产生“价值幻觉”以及公共服务不健全使未来存在不确定性导致转出户流转部分土地。乡土社会限制土地流转范围和经营风险增加风险感知导致转入户流转小规模土地。     

马克思理论视阈中的“现实的人”——以《德意志意识形态》为文本考察

现实的人是马克思新哲学的出发点和落脚点，同时也是马克思对整个思想史上各种“片面人”的颠覆性阐释，是唯物史观与唯心史观和经验论决裂的标识。它不同于性恶论或性善论或既无善亦无恶论，也不同于黑格尔的“绝对精神”的人，更不同于费尔巴哈的“类”。与黑格尔思想及其青年黑格尔派和费尔巴哈等人思想交锋的过程中，马克思分别通过以所有制为轴线动态考察历史发展和以分工为轴线静态考察社会的结构性存在两条线索来阐释“现实的人”的内涵，并以生产工具为红线，对资本主义社会下“现实的人”的静态结构和动态发展予以微观透视。由此，按照唯物史观的基本立场、观点和方法来说，以经济决定政治、政治决定文化的序列构成的结构性存在来解释人才是马克思所谓的“现实的人”。     

正常商品的替代效应与收入效应研究

目前,国内外的微观经济学教科书中,关于正常商品的替代效应和收入效应的图形说明很不一致。主要是关于正常商品降价后新的预算线上的均衡点和原始预算线上的均衡点的位置不同。为此,在给定消费者效用函数和预算线方程的基础上,通过对正常商品降价(涨价)后带来的总效应、替代效应以及收入效应进行数理分析,使人们达到完整准确地理解和掌握正常商品的替代效应和收入效应的目的。     

Curation: a theoretical treatment

Curation is a key mechanism of sociality in a digital era. With an abundance of information, sifting, sorting, selecting, hiding, and standing out become laborious tasks. While researchers have diligently documented people’s curatorial strategies, digital curation remains undertheorized in its own right. I therefore theorize digital curation by disentangling productive curation from consumptive curation, addressing how people curate content that they share, and that which they consume. I embed these agentic curatorial practices within structural bounds, both social and technological. In doing so, I offer a basic theoretical model that captures a dynamic relationship between individual curators, their social networks, and technological design.