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851.
冯乐 《郑州航空工业管理学院学报(社会科学版)》2004,23(1):40-41,53
首先分析了网络传播权的性质及其在<著作权法>中确立的必要性,并在此基础上进一步提出应当对其进行必要的限制,以防止网络传播权的滥用.最后对合理使用和法定许可这两种对著作权限制的方式进行了较为详细的分析. 相似文献
852.
Stability in Center Day Care: Relations with Children's Well‐being and Problem Behavior in Day Care1
J. Clasien de Schipper Marinus H. Van IJzendoorn Louis W. C. Tavecchio 《Social Development》2004,13(4):531-550
Mothers and primary professional caregivers of 186 children, aged 6–30 months, participated in this study in which a new measure for daily stability in center day care was developed, describing staffing, grouping, and program features. Relative contributions of infants’ daily experiences of care stability, quality of care, and mother's daily stress to the child's adjustment to day care were analyzed with hierarchical regressions. The child's adjustment was assessed with the Child Behavior Checklist ( Achenbach, 1997 ) and with the Leiden Inventory for the Child's Well‐being in Day Care. Children enrolled in fewer care arrangements showed less internalizing behavior and more well‐being in the day care setting. Children had higher well‐being scores when trusted caregivers were more available. Mother's family management stress was related to more internalizing problem behavior. Interactions between mother's daily stress and stability in care were found to affect the child's adjustment to day care. 相似文献
853.
854.
Carlos López 《Statistical Methods and Applications》1996,5(2):211-228
Summary The detection of errors and outliers is an important step in data processing, especially those errors arising from data entry
operations because they are of the entire responsability of the data processing staff. The duplicate performance method, is
commonly used as an attempt to detect such type of errors. It implies typically typing twice the same data without any special
precedence. If the errors are uniformly distributed among individuals, retyping a fraction of the total will also remove typically
the same fraction of the errors. A new method is presented, which is able to improve that procedure by sorting the records
putting first the most unlikely ones. The ability of the present methodology has been tested by a Monte Carlo simulation,
using an existing database of categorical answers of housing characteristics in Uruguay. At first, it has been randomly contaiminated,
and after that, the proposed procedure applied. The results show that if a partial retyping is done following the proposed
order about 50 % of the errors can be removed while keeping the retyping effort between 4 and 14% of the dataset, while to
attain a similar result with the standard methodology 50% (on, average) of the database should be processed. The new ordering
is based upon the unrotated Principal Component Analysis (PCA) transformation of the previously coded data. No special shape
of the multivariate distribution function is assumed or required. 相似文献
855.
Hans Van de Velde Roeland van Hout & Marinel Gerritsen 《Journal of Sociolinguistics》1997,1(3):361-391
The study investigates phonological variation and change in two varieties of standard Dutch: southern standard Dutch (spoken in Flanders, the northern part of Belgium) and northern standard Dutch (spoken in the Netherlands). A new source for studying language change in progress is introduced: archived recordings of radio broadcasts. The study covers the period from 1935 to 1993. Changes in progress are studied by a combination of insight and techniques from historical linguistics and sociolinguistics. The outcomes of analyzing separate linguistic variables are presented, but the focus of the analysis is on the presence of more general patterns of covariation within the set of linguistic variables and on the possibility of distinguishing (prototypical) temporal and community-based varieties of standard Dutch. The results reveal a pattern of divergence between the two varieties of standard Dutch. The southern variety remained more or less stable between 1935 and 1993. Northern standard Dutch, however, changed substantially. 相似文献
856.
857.
Juan Carlos Candeal Esteban Induráin José Ramón Uriarte 《Social Choice and Welfare》1992,9(3):213-227
This paper deals with the topological approach to social choice theory initiated by Chichilnisky. We study several issues concerning the existence and uniqueness of Chichilnisky rules defined on preference spaces. We show that on topological vector spaces the only additive, anonymous, and unanimous aggregation n-rule is the convex mean. We study the case of infinite agents and show that an infinite Chichilnisky rule might be considered as the limit of rules for finitely many agents. Finally, we show that under some restrictions on the preference space, the existence of a Chichilnisky rule for every finite case implies the existence of a weak Chichilnisky rule for the infinite case. 相似文献
858.
Teresa Castro Martín 《Revue europeenne de demographie》1992,8(3):217-246
During the last decade, family formation patterns in Spain have undergone a process of substantial transformation. Younger cohorts are increasingly postponing marriage and, once they enter marriage, they tend to delay childbearing. Partly as a result of these timing shifts, period measures such as total fertility rates are likely to underestimate true fertility levels. This study focuses on the first stage of family formation: the transition to motherhood. Following a birth interval approach, the analysis depicts recent trends and differentials in the timing of first birth and explores the role of premarital pregnancies and contraceptive practice on first interval dynamics.Durant la dernière décennie en Espagne, les types de constitution de la famille ont connu de substantielles transformations. Les plus jeunes cohortes prolongent leur célibat et, une fois mariées, tendent à retarder leurs naissances. En partie comme un effet de ces changements temporels, les mesures transversales, telles que la fécondité cumulée, sous-estiment vraisemblablement les vrais niveaux de la fécondité. Cette étude concentre son attention sur la prémière étape de la formation des familles: la transition vers la maternité. En utilisant une approche longitudinale, on analyse les tendances et les différences dans le calendrier de la première naissance et l'on explore le rôle des grossesses prémaritales et des pratiques contraceptives sur la dynamique de l'intervalle entre mariage et première naissance.
The views expressed in this article are those of the author and do not necessarily represent those of the United Nations. 相似文献
The views expressed in this article are those of the author and do not necessarily represent those of the United Nations. 相似文献
859.
基于自建语料库,研究发现信息(数据)是美国、中国和欧盟网络安全法律的核心规制对象。网络安全法律及其中的法律术语具有符号学时空性特点。一方面,美国、中国和欧盟在网络安全法律内容及其法律术语阐释方面存在空间性的差异,即在不同的司法管辖区,对网络安全法律以及同一法律术语存在不同的解释项;另一方面,法律术语作为语言符号具有时间性,规范现实空间的传统法律术语已不适应网络时代社会的发展,亟须对其进行重构以适用于网络空间。此外,社会发展、法的发展和各国互联网技术发展水平的不平衡性决定了网络安全法律移植的必要性,而在移植过程中,应充分考虑网络安全法律及其术语的空间性、本国国情以及国外法与本国法之间的兼容性。 相似文献
860.
European Journal of Population - In the 2010s, fertility has declined in the Nordic countries, most strikingly in Finland, and first births drive the decline. It remains unclear whether this... 相似文献