浅析言语之音     

谢代苏 《人天科学研究》1996,(3)

运用元极图理论,结合现代科学对语言的研究以及社会生活实践,论述了信息与能量是言语的物质基础,阐释了言语对人的身心健康、人际关系产生作用的机理。  相似文献   

松嫩平原农区的经济出路──以黑龙江省双城市东新村为例     

康庆禹 《资源科学》1994,(5)

我国北方平原农区素以生产粮豆为主，经营十分单一，由于生产成本提高而粮豆价格偏低等诸多因素，农民长期收入水平低下。在市场经济条件下，平原农区的经济出路何在？本文通过典型实例调查，从平原农区的资源特点出发，认为“粮、多、企”协调发展是平原农区经济的可行出路，并提出了这种发展模式的改进途径。  相似文献   

论信息市场的宏观调控   总被引：1，自引：0，他引：1  

查先进 《情报科学》1994,15(5):1-4

宏观调控是现代市场经济的基本特征,信息市场的繁荣和发展也离不开国家的宏观调控。文章从分析信息市场的交易特点和运行环境出发,比较系统地论述了中国信息市场宏观调控的具体对策。  相似文献   

情报科学的基本原理     

付星魁 《情报杂志》1993,12(4):27-30,34

根据情报活动的特点和规律,提出了情报科学有动态适应、转化促生情报智能化、不确定性和反馈五种原理。这些原理既互相独立,又相互联系。只有将其综合应用,才能使情报活动的目的得以实现。  相似文献   

A hybrid generative/discriminative approach to text classification with additional information     

Akinori Fujino  Naonori Ueda  Kazumi Saito 《Information processing & management》2007

This paper presents a classifier for text data samples consisting of main text and additional components, such as Web pages and technical papers. We focus on multiclass and single-labeled text classification problems and design the classifier based on a hybrid composed of probabilistic generative and discriminative approaches. Our formulation considers individual component generative models and constructs the classifier by combining these trained models based on the maximum entropy principle. We use naive Bayes models as the component generative models for the main text and additional components such as titles, links, and authors, so that we can apply our formulation to document and Web page classification problems. Our experimental results for four test collections confirmed that our hybrid approach effectively combined main text and additional components and thus improved classification performance.  相似文献   

中小型图书馆数字化参考咨询服务研究   总被引：1，自引：0，他引：1  

魏力更 《现代情报》2007,27(7):71-72

本文在阐述用户对DRS服务的现实需求基础上，提出中小型图书馆应提高认识，积极为开展网上DRS服务创造条件，并探讨了中小型图书馆DRS咨询形式的选择、数字参考源的建设及DRS服务的质量要求等问题。  相似文献   

浅析地球科学技术与社会经济发展的相互关系     

秦学 《科学．经济．社会》2007,25(1):69-71

科学技术是人类认识自然、改造世界的重要工具。现代地球科学技术正在深刻、全面地影响到人类的经济和社会发展,与人类的关系越来越密切。经济、政治、文化、教育、哲学、军事等社会因素是地球科学技术形成发展的决定力量,地球科学技术对人类的物质文明繁荣、精神文明进步、社会生活现代化、社会结构变革等起着重大的促进作用,是人类发展的重要推动力。科学地认识“人地关系”,对于我们树立科学的地球观、资源观、环境观和发展观,建设“和谐社会”具有重大的意义。  相似文献   

地质遗迹资源及其保护与利用的协调性问题   总被引：12，自引：1，他引：12  

彭永祥  彭永祥  吴成基 《资源科学》2004,26(1):69-75

地质遗迹是具有科学、旅游、科普及环境教育等多种价值的独特自然资源.现实中,在地质遗迹资源的保护与利用上还存在着许多顾此失彼的不协调现象,这种不协调体现在3方面:一是保护与利用的程度之间;二是各种利用方式之间;三是保护利用程度与资源品位之间.据此对区域地质遗迹资源进行保护与利用协调性分类,可与常用的成因分类相互补充.陕西省地质遗迹保护与利用协调性类型有单一保护型、单一开发型、保护利用双差型与正在协调型等,基本反映出目前主要的协调性问题.在此基础上提出如下协调策略:应尽快制定地质遗迹保护法,统一宏观管理体系,建立起权威的国家级和省级地质遗迹保护、管理体系;根据实地情况选择相应规范的微观管理模式,完善监督制约机制,以促进科研、科普旅游、景观旅游有机结合及全面发展.  相似文献   

实物期权:我国中小企业信息化投资决策的必然选择     

鲍旭红 《科技与管理》2006,8(5):96-98

信息化是中小企业迎接新经济的挑战，提高企业运作效率、降低经营管理成本、把握新的商业机会的必由之路。但传统的投资决策方法无法根据信息化投资的特点来把握好投资的时机、方向、重点和结构。通过比较分析，认为实物期权方法作为一种动态评估方法，更能适应中小企业信息化投资特点。运用实物期权方法对中小企业信息化投资决策进行分析，可以突破传统决策分析方法的束缚，大大降低投资风险，增强投资的科学性。  相似文献   

Blood zinc protoporphyrin, serum total protein, and total cholesterol levels in automobile workshop workers in relation to lead toxicity: Our experience     

Suneesh Kumar Pachathundikandi  Earaly Thomas Varghese 《Indian journal of clinical biochemistry : IJCB》2006,21(2):114-117

Blood zinc protoporphyrin (ZPP), serum total protein (TP), and total cholesterol (TC) levels in automobile workshop workers in relation to lead toxicity were analysed. In the present study, automobile workshop workers (healthy male workers at an age between 28 and 35 from four major automobile workshops in Kottayam, Kerala State, India) and the control (male healthy adults at an age between 28 and 35 residing at Aymanam, a distant village at Kottayam District, Kerala having reduced or no chance of lead exposure) displayed significant difference in blood lead (BPb) and blood ZZP (BZPP) level. The mean value of BPb in automobile workshop workers was 15.76±0.33 μg/dl, while in the control it was 8.20±0.15 μg/dl. In automobile workshop workers, the mean value of BZPP was 34.2±0.62 μg/dl. The control group exhibited a mean of 11.5±0.22 μg/dl. Automobile workshop workers exhibited significant increase in BZPP was corresponding to the increase in BPb level. The total protein levels estimated in automobile workshop workers showed significant decrease compared to control individuals, but was within the reference range of healthy individuals. The mean value of TP level in automobile workshop workers and control was 6.9±0.13 g/dl and 7.71±0.18 g/dl, respectively. There was no significant difference in blood haemoglobin (BHb) level among the automobile workshop workers and control. The serum TC level in automobile workshop workers showed significant decrease compared to the control individuals, but was with in the reference range of healthy individuals. The mean level of serum TC in automobile workshop workers was 162.00±3.44 mg/dl and the same in control was 172.86±4.32 mg/dl. The present study affirms occupational lead toxicity in automobile workshop workers and its effect on serum protein and cholesterol levels.  相似文献