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Search Results: 1 - 10 of 6725 matches for " Linke Hou "
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Linke Hou & Xiaowu Li
International Journal of Research and Reviews in Applied Sciences , 2010,
The Analytical Expressions for Computing the Minimum Distance between a Point and a Torus  [PDF]
Xiaowu Li, Linke Hou, Juan Liang, Zhinan Wu, Lin Wang, Chunguang Yue
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.44011
Abstract: In this paper, we present the analytical expressions for computing the minimum distance between a point and a torus, which is called the orthogonal projection point problem. If the test point is on the outside of the torus and the test point is at the center axis of the torus, we present that the orthogonal projection point set is a circle perpendicular to the center axis of the torus; if not, the analytical expression for the orthogonal projection point problem is also given. Furthermore, if the test point is in the inside of the torus, we also give the corresponding analytical expression for orthogonal projection point for two cases.
Marginal revenue of land and total factor productivity in Chinese agriculture: Evidence from spatial analysis

HOU Linke,ZHANG Yanjie,ZHAN Jinyan,Thomas GLAUBEN,

地理学报 , 2012,
Abstract: This paper attempts to explore the temporal and spatial nature of the marginal revenue of land, total factor productivity (TFP) change and its three components: technical change (TC), technical efficiency change (TEC) and scale efficiency change (SEC) as seen in Chinese agricultural production from 1995 to 1999. Based on county-level data, the study utilized both stochastic frontier and mapping analyses methods. The results show that growth in the marginal revenue of land was diverse across various regions, where most gain occurred in eastern coastal zone, while loss was in Northwest and North China. China has experienced moderate decreases in annual TFP change (-0.26%) with considerable regional variations. Specifically, the administrative intervention in grain production and the deterioration of the agricultural technology diffusion system led to a moderate drop in annual TFP change. County-level mapping analyses took into account interregional variances in TFP and its components. Regarding components of TFP, TEC differences explain the majority of regional dispersions in TFP. As developed areas in China, the Huang-Huai-Hai region and the Beijing-Tianjin-Tangshan economic zone face the challenges of land conversion and grain security amidst the process of urbanization.
Women in Sanaa: Public Appearance and Visual Representation Frauen in Sanaa: ffentliche Pr senz und mediale Repr sentation Mujeres en Sanaa: Apariencia pública y representación visual
Irina Linke
Forum : Qualitative Social Research , 2009,
Abstract: An exponential increase in media usage in the Yemeni capital, Sanaa (foreign satellite channels, Yemeni TV, photography and video) changes not only the (media) public ( ffentlichkeit), but social spaces in a local setting within a particular global-local framework. In this article I discuss women in the Yemeni capital who use television and other pictorial representations strategically, and, in reworking the frontiers between visibility and invisibility, change the gendered social spaces of their life world (Lebenswelt). Pictures, as parts of the life world open up views into new spaces ([Blick-] R ume) and make new relationships ([Blick-] Kontakte) possible. Looks and gazes determine social space and play a part in the social construction of bodies and spaces. This is negotiated on the performative as well as on the discursive level. The case study I present is part of a larger research project based on one year of fieldwork, field notes and 45 hours of audio-visual material. Analysis of the discourses of young women about their own image practices reveals how they perceive the endangerment of a social order, how they articulate their interest in change, and their strategies for becoming "visible." Thus, this article refers to culturally different readings of what can be seen. URN: urn:nbn:de:0114-fqs0902150 El aumento exponencial en el uso de medios en Sanaa, capital de la República de Yemen, (canales extranjeros vía satélite, TV yemenita, fotografía y video) torna no solamente lo público ( ffentlichkeit), sino también los espacios sociales en un escenario local con un marco global-local particular. En este artículo discuto acerca de las mujeres en la capital yemenita que usan estratégicamente la televisión y otras representaciones ilustradas y, al reelaborar las fronteras entre visibilidad e invisibilidad, cambian los espacios sociales basados en el género en sus mundos de vida (Lebenswelt). Las imágenes, como partes del mundo de vida abre perspectivas hacia nuevos espacios ([Blick-] R ume) y hace posible nuevas relaciones ([Blick-] Kontakte) posible. Las vistas y las miradas fijas determinan el espacio social y juegan una parte en la construcción social de cuerpos y espacios. Lo cual se negocia tanto a nivel performativo como discursivo. El estudio de caso que presento es parte de un proyecto de investigación más grande basado e un a o de trabajo de campo, notas de campo y 45 horas de material audiovisual. El análisis de los discursos de mujeres jóvenes acerca de sus propias prácticas de imagen revela la forma en que ellas perciben la puesta en pelig
Rational Ehrhart quasi-polynomials
Eva Linke
Mathematics , 2010,
Abstract: Ehrhart's famous theorem states that the number of integral points in a rational polytope is a quasi-polynomial in the integral dilation factor. We study the case of rational dilation factors and it turns out that the number of integral points can still be written as a rational quasi-polynomial. Furthermore the coefficients of this rational quasi-polynomial are piecewise polynomial functions and related to each other by derivation.
Endoskopowa pankreatocholangiografia wsteczna i jej zastosowanie w chorobach trzustki u dzieci
Iwona Igny?,Krzysztof Linke
Polish Gastroenterology , 1998,
Abstract: Endoskopowa pankreatocholangiografia wsteczna (EPCW) czy zalety badania endoskopowego i radiologicznego, daj c obraz morfologii, patologii i fizjologii trzustki oraz patologii przewodów ó ciowych (p ). Uwzgl dniaj c mo liwo ci, jakie niesie EPCW, podj li my si wykonania tego badania u dzieci z przewlek ym nawracaj cym zapaleniem trzustki (pnzt). Na podstawie 10 przeprowadzonych badań EPCW; u 1 dziewczynki rozpoznali my kamic przewodu Wirsunga, u 2 zw enie przewodu trzustkowego z objawami nadci nienia, u 1 zw enie zwieracza Oddiego i u 1 dysfunkcj zwieracza Oddiego w postaci opó nienia opró niania przewodu Wirsunga. Obecno przewlek ych zmian zapalnych trzustki potwierdzono u wszystkich badanych dzieci. U 3 dzieci wykonano endoskopow sfinkterotomi (ES). U 1 dziewczynki zaprotezowano przewód Wirsunga. U adnego dziecka nie zaobserwowano objawów niepo danych zwi zanych z premedykacj , badaniem czy ES. Endoskopowa pankreatocholangiografia wsteczna jest technik wzgl dnie bezpieczn , bardzo czu i u yteczn w diagnostyce oraz leczeniu, ograniczaj c wskazania do zabiegów chirurgicznych równie u dzieci.
An Algorithm for Dynamic Load Balancing of Synchronous Monte Carlo Simulations on Multiprocessor Systems
P. Altevogt,A. Linke
Physics , 1993, DOI: 10.1016/0010-4655(94)90183-X
Abstract: We describe an algorithm for dynamic load balancing of geometrically parallelized synchronous Monte Carlo simulations of physical models. This algorithm is designed for a (heterogeneous) multiprocessor system of the MIMD type with distributed memory. The algorithm is based on a dynamic partitioning of the domain of the algorithm, taking into account the actual processor resources of the various processors of the multiprocessor system.
Cone-volume measures of polytopes
Martin Henk,Eva Linke
Mathematics , 2013,
Abstract: The cone-volume measure of a polytope with centroid at the origin is proved to satisfy the subspace concentration condition. As a consequence a conjectured (a dozen years ago) fundamental sharp affine isoperimetric inequality for the U-functional is completely established -- along with its equality conditions.
Lattice points in vector-dilated polytopes
Martin Henk,Eva Linke
Mathematics , 2012,
Abstract: For $A\in\mathbb{Z}^{m\times n}$ we investigate the behaviour of the number of lattice points in $P_A(b)=\{x\in\mathbb{R}^n:Ax\leq b\}$, depending on the varying vector $b$. It is known that this number, restricted to a cone of constant combinatorial type of $P_A(b)$, is a quasi-polynomial function if b is an integral vector. We extend this result to rational vectors $b$ and show that the coefficients themselves are piecewise-defined polynomials. To this end, we use a theorem of McMullen on lattice points in Minkowski-sums of rational dilates of rational polytopes and take a closer look at the coefficients appearing there.
Asymptotic properties of one-step weighted $M$-estimators and applications to some regression problems
Yu. Yu. Linke
Statistics , 2015,
Abstract: We study asymptotic behavior of one-step weighted $M$-estimators based on samples from arrays of not necessarily identically distributed random variables and representing explicit approximations to the corresponding consistent weighted $M$-estimators. Sufficient conditions are presented for asymptotic normality of the one-step weighted $M$-estimators under consideration. As a consequence, we consider some well-known nonlinear regression models where the procedure mentioned allow us to construct explicit asymptotically optimal estimators.
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