全文获取类型
收费全文 | 104篇 |
免费 | 5篇 |
国内免费 | 5篇 |
专业分类
系统科学 | 7篇 |
丛书文集 | 8篇 |
教育与普及 | 5篇 |
理论与方法论 | 3篇 |
现状及发展 | 6篇 |
综合类 | 85篇 |
出版年
2024年 | 1篇 |
2021年 | 3篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 2篇 |
2014年 | 4篇 |
2013年 | 4篇 |
2012年 | 5篇 |
2011年 | 4篇 |
2010年 | 4篇 |
2009年 | 1篇 |
2008年 | 5篇 |
2007年 | 17篇 |
2006年 | 6篇 |
2005年 | 9篇 |
2004年 | 8篇 |
2003年 | 5篇 |
2002年 | 3篇 |
2001年 | 2篇 |
2000年 | 3篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 5篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1989年 | 2篇 |
排序方式: 共有114条查询结果,搜索用时 15 毫秒
1.
应用浮游藻类评价桂湖水质的研究 总被引:5,自引:0,他引:5
于2004年应用浮游藻类对桂林旅游景点——桂湖水质进行监测评价,初步探讨了桂湖浮游藻类与水质的相互关系.研究内容:浮游藻类的组成、生物种类、生物数量、指示生物、均匀度指数、多样性指数及理化对照监测等.结果表明:桂湖含有浮游藻类7门69属138种,主要种类为硅藻和绿藻;水质评价指数大多数样点达到清洁水质标准,少数有轻度污染,桂湖水质整体为清洁。 相似文献
2.
This paper aims to identify the key characteristics of model organisms that make them a specific type of model within the contemporary life sciences: in particular, we argue that the term “model organism” does not apply to all organisms used for the purposes of experimental research. We explore the differences between experimental and model organisms in terms of their material and epistemic features, and argue that it is essential to distinguish between their representational scope and representational target. We also examine the characteristics of the communities who use these two types of models, including their research goals, disciplinary affiliations, and preferred practices to show how these have contributed to the conceptualization of a model organism. We conclude that model organisms are a specific subgroup of organisms that have been standardized to fit an integrative and comparative mode of research, and that it must be clearly distinguished from the broader class of experimental organisms. In addition, we argue that model organisms are the key components of a unique and distinctively biological way of doing research using models. 相似文献
3.
The meteorotropic reaction of the human organism is a function of different factors, such as the type and intensity of the effects of the physical environment as well as individual conditions like adaptive capacity and state of health. Many medical-meteorological studies show causal correlations between conditions in the lower atmosphere and reactions of the human organism, but also combined or synergistic effects of different weather situations, which can only be proved stochastically. These effects are described and the methodology of the investigations, as well as the results, critically discussed. Furthermore, application of the results in the areas of medical-meteorological consultation, with the goal of improving living conditions, is considered. 相似文献
4.
Tage Frandberg 《Systems Research and Behavioral Science》2005,22(5):373-383
This article begins with a brief résumé of how the book Living Systems came into being, following which we are reminded that Alfred N. Whitehead's philosophy is an important part of the thinking upon which the book is built. Certain other philosophers are also mentioned. There is then a discussion of systems science, after which I deal with three different points of view regarding how to see the earth as a system: one which emanates from James and Jessie Miller's article ‘The earth as a system’; one which can be called a scientific point of view; and one which is based on the standpoint that the earth should be seen as a ninth level of life according to Miller's living systems analytical framework. This latter standpoint is then taken as a starting point for simulating a model of the earth system. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
5.
Jan
sterlund 《Systems Research and Behavioral Science》1999,16(1):41-55
Development of new high‐technology products requires the contribution of many deeply specialized competences. The solving of design problems in cooperation is traditionally achieved by organizing multidisciplinary project teams. Use of such teams, especially over a long time, has disadvantages. Poor efficiency and the hampering of strategical development of competences for future competitiveness are examples of this. Using benefits of modern informatics devoted to the human way of acting allows a better use of the competence resources which can be attained by use of virtual teams, graphically presented documentation systems, and problem‐solving methods by network anasynthesis. Copyright © 1999 John Wiley & Sons, Ltd. 相似文献
6.
从马克思社会有机体理论看社会发展的规律性 总被引:1,自引:0,他引:1
李本松 《济源职业技术学院学报》2008,7(2):48-51
马克思的社会有机体理论是马克思的社会历史观,是对其唯物史观的高度浓缩。马克思的社会有机体理论认为社会有机体就是一切社会关系的总合体。在这个理论视角上总结出人类社会的发展具有如下的规律:社会发展是一个不断进化的自然历史过程;社会发展是一个动态平衡的过程;社会发展是一个人的主观能动性和客观规律性相统一的过程;社会发展呈现出周期性。 相似文献
7.
高剑平 《广西民族大学学报》2007,(4)
贝塔朗菲的"机体论"包含三个主要观点:生物体是一个有机整体的观点;等级观点;动态的开放系统观点。这三个观点为其后来创立一般系统论奠定了基础。有机体生物学中所阐释的许多基本原则和范畴,后来推广成了一般系统论的基本原理和范畴。 相似文献
8.
经济系统效益分析与政府对国有企业调控职能实现方法 总被引:2,自引:0,他引:2
本文针对目前国有企业存在的问题, 在理论上对经济系统的机理和机理与效益之间的关系进行了深入分析, 从生产力与生产关系的深层次上指出了国有企业经济效益下降原因, 并从技术上提出了政府对国有企业调控职能的实现方法。 相似文献
9.
马克思的社会有机体论是马克思主义理论的重要组成部分。社会有机体是社会构成诸要素紧密相连的有机整体,是一个不断处于运动和变化的有机体。从伦理学的向度看,这一理论揭示了资本主义社会发达有机体的必然灭亡,科学预测了和谐社会的社会有机体的历史趋势。马克思的社会有机体论具有整体性、有机性和开放性的原则,其规范性表现为社会有机体论的实践性、统一性和矛盾性。 相似文献
10.