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新地时期
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     expansion in new stages.
     时期的发展。
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     Prospect for the Seismological Work in Cities (Prefectures) and Counties During the New Period
     时期市()县震工作的展望
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     On the rural land system reform in new femocratism period
     民主主义时期制度变革论
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     Decision Making in Investment in the New Period
     时期的投资策略
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     Analysis of China's Agricultural Land Transfer in the New Period
     时期中国农流转问题探析
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The author divided the 30 years' development of Chinese psychology into fourmain periods: The first period (1949-1958) has been characterized by the learning ofMarxism-Leninism, Pavlov's theory and Soviet psychology, the criticism of bourgeoispsychology, and some preliminary experimental researches. The second period (1959-1965) was that of rapid development and proliferation of psychology. In the thirdperiod (1966-1976) Chinese psychology was at a halt due to the sabotage and inter-ference of the Gang of Four....

The author divided the 30 years' development of Chinese psychology into fourmain periods: The first period (1949-1958) has been characterized by the learning ofMarxism-Leninism, Pavlov's theory and Soviet psychology, the criticism of bourgeoispsychology, and some preliminary experimental researches. The second period (1959-1965) was that of rapid development and proliferation of psychology. In the thirdperiod (1966-1976) Chinese psychology was at a halt due to the sabotage and inter-ference of the Gang of Four. With the victory over the Gang of Four begins thefourth period (1976-1979) in which Chinese psychology enters a new era of vigorousdevelopment.

欣逢我中华人民共和国成立三十周年大庆的时候,对我国心理学三十年来经历的曲折发展过程进行一番回顾,总结其中的经验教训以利于为新时期总任务服务。由于心理学科的特殊性质,不少学术问题还难于明确肯定,本刊决定贯彻百家争鸣的方针,让国内心理学界从不同方面、不同角度采取各抒己见的方式来考察分析。这一期刊登的两篇有关论文就是这样的例子。希望全国心理学界开展这方面的认真讨论。

Extended application of various admixtures, especially of superplasticizer and water-reducing agents to concrete, and development of fiber-reinforced concretes as well as polymerimpregnated concretes in recent years have marked a new era in the science of cement uti-lization. In getting such amomentum of development, tribute should be paid mainly to theadoption of advanced techniques of measurement,such as scanning electron microscope, nu-clear magnetic resonance, X-ray powder diffraction, differential thermal...

Extended application of various admixtures, especially of superplasticizer and water-reducing agents to concrete, and development of fiber-reinforced concretes as well as polymerimpregnated concretes in recent years have marked a new era in the science of cement uti-lization. In getting such amomentum of development, tribute should be paid mainly to theadoption of advanced techniques of measurement,such as scanning electron microscope, nu-clear magnetic resonance, X-ray powder diffraction, differential thermal analysis, etc. Bymeans of these techniques, basic researches on microstructures of cement paste and freshconcrete have been carried on and fruitful results have already been obtained. Interchangeability of the properties of elasticity, viscosity and plasticity in the wholeprocess of setting and hardening of cement has not only reflected the formation and deve-lopment of the microstructure of cement paste, but also has determined the strength anddurability of hardened cement paste. Thus, properties before and after setting of cement arenot isolated each other and must be treated in close connection during investigation. Physi-cal properties of cement paste and fresh concrete must be emphasized because of their deci-sive determination of the properties of cement and concrete after hardening. This is why rheology becomes recently another field of new exploration in the scientificapproach to the utilization of cement,and rheological characteristics before and after settingof cement and concrete such as plastic viscosity and yield stress, time of relaxation and creepare those which must be dealt with by the investigators.

混凝土中各种外加剂,特别是超塑化剂和减水剂的应用和纤维增强混凝土以及聚合物浸渍混凝土等复合材料的发展,标志着近年来水泥应用科学已进入了一个新的时期。取得这样的发展速度,重要的一个原因是近代先进测试技术的掌握,包括扫描电子显微镜、核磁共振、X-射线粉末衍射、差热分析等等。由于应用了这些测试技术,水泥浆体和新拌混凝土的微观结构的研究得以迅速展开,并已经取得显著成果。 水泥从加水开始发展到凝结硬化的全过程都贯穿了弹、粘、塑性的不断演变。这种演变不仅反映了水泥浆体微观结构的形成和发展,而且决定了硬化水泥浆体的强度和耐久性,因此,水泥凝固前和凝固后的性质彼此不是孤立的。在科研过程中必须考虑到它们间的密切联系。特别需要重视水泥浆体和新拌混凝土的物理性质,因为就是它们,决定了水泥与混凝土硬化后的一系列性能。 这就是为什么流变学已经开始在水泥应用科学中占有重要地位,而水泥与混凝土凝固前后的流变特征,诸如塑性粘度和屈服应力,松弛时间与徐变等,都是从事这方面的科研工作所需要掌握的。

Having passed through such stages as primal migratory agriculture, ancient traditional agriculture and industrialized agriculture, now agriculture production system of mankind is advancing towards the new stage-post industrialization agriculture. According to the practical need of the development of agricultural production, the systems of agricultural knowledge have also gone through such developmental stages in history as non-recorded and recorded knowledge of agricultural experience and experimental agros-ciences....

Having passed through such stages as primal migratory agriculture, ancient traditional agriculture and industrialized agriculture, now agriculture production system of mankind is advancing towards the new stage-post industrialization agriculture. According to the practical need of the development of agricultural production, the systems of agricultural knowledge have also gone through such developmental stages in history as non-recorded and recorded knowledge of agricultural experience and experimental agros-ciences. Now agriculture knowledge system of mankind is entering into the epoch when experimental agrosciences and systematic agrosciences arc converging and forming a new modern agroscience system. Systematic agrosc ience is concerned with the synthetic study and management of agriculture production system, and thus is the science of systematization of knowledge of agrosciences. This paper explores primarily the problems in the construction of systematic agrosciences and proposes the methodology and the research procedure for realization of the systematization of process in the research of agroscience.

人类的农业生产系统,经历了原始迁移农业、古代传统农业和工业化农业等历史发展阶段.现正探索着向工业化后农业的新阶段发展。适应农业生产发展的实际需要,人类的农业知识系统,也经历了没有文字记载的、有文字记载的农业经验知识和经验农业科学这几个历史发展阶段,现在正进入经验农业科学与系统农业科学纵横交织形成现代农业科学系统的新时期。系统农业科学,是对农业生产系统进行综合研究和综合管理的科学,从而也是将农业科学知识系统化的科学。本文对系统农业科学的学科体系的建设问题进行了初步探讨,提出了一个实现农业科学研究过程科学化和系统化的方法系统和研究程序。

 
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