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1.
在证券市场国际化的趋势下,会计也在趋于国际协调,而海峡两岸关系密切,经济互动频繁,因此本文对海峡两岸在信息提供者、披露时点、财务预测更正更新、管理当局责任等财务预测制度的四个方面进行比较研究,指出差异,并提出中国大陆在财务预测制度改进的建议。  相似文献   
2.
The authors present a case initially thought to be a child abuse homicide that, after complete autopsy and thorough investigation, was determined to be caused by a viral infection and complicated by postmortem animal activity. Neonatal herpes simplex infection and postmortem skin defects are discussed.  相似文献   
3.
Forensic hair examiners using traditional microscopic comparison techniques cannot state with certainty, except in extremely rare cases, that a found hair originated from a particular individual. They also cannot provide a statistical likelihood that a hair came from a certain individual and not another. There is no data available regarding the frequency of a specific microscopic hair characteristic (i.e., microtype) or trait in a particular population. Microtype is a term we use to describe certain internal characteristics and features expressed when observing hairs with unpolarized transmitted light. Courts seem to be sympathetic to lawyer's concerns that there are no accepted probability standards for human hair identification. Under Daubert, microscopic hair analysis testimony (or other scientific testimony) is allowed if the technique can be shown to have testability, peer review, general acceptance, and a known error rate. As with other forensic disciplines, laboratory error rate determination for a specific hair comparison case is not possible. Polymerase chain reaction (PCR)-based typing of hair roots offer hair examiners an opportunity to begin cataloging data with regard to microscopic hair association error rates. This is certainly a realistic manner in which to ascertain which hair microtypes and case circumstances repeatedly cause difficulty in association. Two cases are presented in which PCR typing revealed an incorrect inclusion in one and an incorrect exclusion in another. This paper does not suggest that such limited observations define a rate of occurrence. These cases illustrate evidentiary conditions or case circumstances which may potentially contribute to microscopic hair association errors. Issues discussed in this review paper address the potential questions an expert witness may expect in a Daubert hair analysis admissibility hearing.  相似文献   
4.
曹静 《桂海论丛》2005,21(2):95-97
在高校教学过程中,选修课日益成为一道亮丽的风景,如何开设选修课以发挥其最大的教学功能,这是教育工作者普遍关注的问题.高校"音乐欣赏"选修课的开设一要明确教学目的,二要突破定向思维,三要设计课堂形式,四要增强师生交流.  相似文献   
5.
Abstract:  It is generally accepted that nuclei degrade in developing hair shafts but the point at which such occurs has not been investigated. The fate of mitochondria in the keratinizing hair shaft has been less clear. This study uses transmission electron microscopy to investigate when nuclei and mitochondria are no longer visible in the developing hair shaft. Serial sections were obtained from anagen head hairs absent follicles in order to determine the sequence of degradation of nuclei and mitochondria in the hair shaft by starting at the root bulb and proceeding toward the hair tip. It was demonstrated that nuclei and mitochondria become invisible in the keratinizing hair shaft at about the same time. This was found to occur fairly early in the process at the level of the hair shaft where the hair cuticle becomes permanent.  相似文献   
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7.
Analysis of mitochondrial DNA (mtDNA) sequence from human hairs has proven to be a valuable complement to traditional hair comparison microscopy in forensic cases when nuclear DNA typing is not possible. However, while much is known about the specialties of hair biology and mtDNA sequence analysis, there has been little correlation of individual information. Hair microscopy and hair embryogenesis are subjects that are sometimes unfamiliar to the forensic DNA scientist. The continual growth and replacement of human hairs involves complex cellular transformation and regeneration events. In turn, the analysis of mtDNA sequence data can involve complex questions of interpretation (e.g., heteroplasmy and the sequence variation it may cause within an individual, or between related individuals. In this paper we review the details of hair developmental histology, including the migration of mitochondria in the growing hair, and the related interpretation issues regarding the analysis of mtDNA data in hair. Macroscopic and microscopic hair specimen classifications are provided as a possible guide to help forensic scientists better associate mtDNA sequence heteroplasmy data with the physical characteristics of a hair. These same hair specimen classifications may also be useful when evaluating the relative success in sequencing different types and/or forms of human hairs. The ultimate goal of this review is to bring the hair microscopist and forensic DNA scientist closer together, as the use of mtDNA sequence analysis continues to expand.  相似文献   
8.
行政问责制是政府官员向社会公众和民意机关承担政治责任的一种政治法律制度。我国现行的行政问责制存在问责事由狭窄、对象不清、主体越位与缺位并存,责任不明、落实不力和程序不规范等问题。为此,我们需要明确行政问责制的要素构造与运行机制,加强人大的问责职能,完善政府绩效评估、行政公开、新闻监督等配套制度,同时要壮大第三部门,强化社会监督。  相似文献   
9.
基因专利保护范围边界的确定是当前生物科技专利领域中争论的焦点之一。专利保护范围决定着专利垄断权的实际价值,基因专利保护范围直接影响着生物技术产业的发展。主要梳理美国、德国、瑞士和日本在基因专利保护范围上的发展变迁趋势,同时初步探讨对我国基因专利保护范围界定方面给予的启示。  相似文献   
10.
从犯的犯罪既遂认定是共同犯罪既遂认定中的一个分支问题,较难引起学术界的注意,但其对共同犯罪既遂理论及刑事司法实践的发展不无积极意义.结合共同犯罪及犯罪既遂的相关理论.对以从犯形式而存在的组织犯、教唆犯、帮助犯、实行犯的犯罪既遂问题分别予以阐述.  相似文献   
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