期刊文献+
共找到39,944篇文章
< 1 2 250 >
每页显示 20 50 100
从形式的知识到形式生成——观念史启发下的设计理论探索 预览
1
作者 范路 《新建筑》 2019年第3期19-24,共6页
形式是现代建筑重要的概念,其含义丰富而多变。文章从共时性视角解读福蒂对于"形式"概念的历史演化研究,以此为据从形式呈现、形式转化和形式关联三个维度反思了现代建筑中的形式主义思想流派,并尝试探索一种当代的形式生成... 形式是现代建筑重要的概念,其含义丰富而多变。文章从共时性视角解读福蒂对于"形式"概念的历史演化研究,以此为据从形式呈现、形式转化和形式关联三个维度反思了现代建筑中的形式主义思想流派,并尝试探索一种当代的形式生成设计理论。 展开更多
关键词 形式 形式呈现 形式转化 形式关联 形式主义 形式生成
在线阅读 下载PDF
Floristic composition and ecological gradient analyses of the Liakot Forests in the Kalam region of District Swat,Pakistan 预览
2
作者 Sohail Anwar Shujaul Mulk Khan +2 位作者 Zeeshan Ahmad Zahid Ullah Majid Iqbal 《林业研究:英文版》 CAS CSCD 2019年第4期1407-1416,共10页
Kalam Kohistan is a dry,temperate hilly region in the Hindu Raj Series of the Greater Hindu Kush Mountains with diverse forests.As plant distribution and composition is expression of a range of various environmental v... Kalam Kohistan is a dry,temperate hilly region in the Hindu Raj Series of the Greater Hindu Kush Mountains with diverse forests.As plant distribution and composition is expression of a range of various environmental variables,ecological and floristic attributes of vegetation in the Laikot Forests were therefore evaluated via consecutive explorative trips.These forests have not been evaluated ecologically before due to harsh climatic conditions and issues of accessibility and the study in hand is one of the first in its nature.Quantitative ecological techniques were used to sample forest vegetation and identify species in quadrats of 2 m×2 m for herbs,5 m×5 m for shrubs and 10 m×10 m for trees.All the data of 195 plant species and environmental factors were analyzed via Two-way Cluster Analysis and Canonical Correspondence Analysis using PCORD and CANOCO software.Among 195 plant species from 63 families were 27 species of Asteraceae,the most-speciose family,followed by Poaceae(20 spp.).The dominant life form was therophyte(86 spp.;44%share),followed by phanerophyte(41 spp.;21%share).For the leaf size spectrum,most prevalent was nanophyll(73 spp.;44%)followed by microphyll(66 spp.,34%)and mesophyll(44 spp.;23%).Calcium carbonate,pH,potassium,sand,silt,organic matter,slope aspect and grazing significantly influenced species composition,distribution and habitat.The floristic variation in the region was diverse due to elevational and aspect gradients and thus devided into three zones.This vegetation zonation can be utilized for forest management,species and habitat conservation.Both in situ and ex situ conservation of threatened plant species may improve their conservation status in future if address properly. 展开更多
关键词 FLORISTIC composition Ecological factors Life FORM spectra Leaf FORM classes Elevation ZONES CANONICAL CORRESPONDENCE analysis(CCA)
在线阅读 下载PDF
论孔疏《大学注》的形式及内容 预览
3
作者 张兴 《国际儒学论丛》 2019年第1期55-66,249,共13页
孔颖达对郑玄《大学注》的疏解主要体现在形式及内容上。从形式上看,孔颖达疏解《大学注》的段落只有十二处,可以分为两种形式:一种是对单个句子的疏解,另一种是对整段句子的疏解。从内容上看,孔颖达对于郑玄所注句子的疏解主要有两种:... 孔颖达对郑玄《大学注》的疏解主要体现在形式及内容上。从形式上看,孔颖达疏解《大学注》的段落只有十二处,可以分为两种形式:一种是对单个句子的疏解,另一种是对整段句子的疏解。从内容上看,孔颖达对于郑玄所注句子的疏解主要有两种:一种是申述郑意,即进一步阐述郑玄注解《大学》之意;另一种是详细考证郑玄注解《大学》时所引用的文献。对于郑玄注所引文献的详细考证是孔颖达疏解《大学注》的重点所在,主要包括三个方面:一是指明郑玄引文出处;二是补充郑注阙漏之处;三是征引更多文献弥合郑意。 展开更多
关键词 孔疏 郑注 形式 内容 申述郑意
在线阅读 下载PDF
劳氏救助标准合同格式替代方案的探讨
4
作者 江南 《海运情报》 2019年第3期17-17,16共2页
一位业内人士告知,劳氏救助标准合同格式(Lloyd's Open Form,LOF)替代方案的提出是为了纠正对传统标准形式救助合同的批评,同时为打捞者提供公平的回报。
关键词 合同格式 标准形式 业内人士 FORM
A Nekhoroshev Type Theorem for the Nonlinear Wave Equation in Gevrey Space
5
作者 Chunyong LIU Huayong LIU Rong ZHAO 《数学年刊:B辑英文版》 SCIE CSCD 2019年第3期389-410,共22页
In this paper, the authors prove a Nekhoroshev type theorem for the nonlinear wave equation utt=uxx-mu-f(u),x∈[0, π] in Gevrey space.
关键词 Gevrey SPACE Nonlinear wave EQUATION NORMAL FORM Stability
Jordan canonical form of three-way tensor with multilinear rank (4,4,3)
6
作者 Lubin Cui Minghui Li 《中国数学前沿:英文版》 SCIE CSCD 2019年第2期281-300,共20页
The Jordan canonical form of matrix is an important concept in linear algebra. And the concept has been extended to three-way arrays case. In this paper, we study the Jordan canonical form of three-way tensor with mul... The Jordan canonical form of matrix is an important concept in linear algebra. And the concept has been extended to three-way arrays case. In this paper, we study the Jordan canonical form of three-way tensor with multilinear rank (4,4,3). For a 4 × 4 × 4 tensor gj with multilinear rank (4,4,3), we show that gj must be turned into the canonical form if the upper triangular entries of the last three slices of gj are nonzero. If some of the upper triangular entries of the last three slices of gj are zeros, we give some conditions to guarantee that gj can be turned into the canonical form. 展开更多
关键词 JORDAN CANONICAL form TENSOR DECOMPOSITION MULTILINEAR RANK
村上春树《挪威的森林》中孤独感的解读 预览
7
作者 金海 《山东农业工程学院学报》 2019年第4期109-110,共2页
村上春树是一位极富盛名和影响力的日本现代作家,近年来村上春树的作品备受世界人民的喜爱与追捧。由于生活环境以及社会现状的影响,村上春树的作品中大多充满矛盾孤独的情感,其中《挪威的森林》为典型作品。本文将简要分析《挪威的森... 村上春树是一位极富盛名和影响力的日本现代作家,近年来村上春树的作品备受世界人民的喜爱与追捧。由于生活环境以及社会现状的影响,村上春树的作品中大多充满矛盾孤独的情感,其中《挪威的森林》为典型作品。本文将简要分析《挪威的森林》中孤独感的表现形式以及体现途径,旨在帮助读者更加深入的感受作者以及小说中的孤独感。 展开更多
关键词 《挪威的森林》 孤独感 表现形式
在线阅读 下载PDF
革命与话语:苏区动员的语言载体形态与特征 预览
8
作者 谭琪红 向绪伟 《井冈山大学学报:社会科学版》 2019年第1期64-69,共6页
语言载体是人类重要的传播媒介和传播符号。在文化相对滞后的中央苏区,中共充分运用音乐歌谣类、戏剧舞蹈类、谈话讲演类的语言载体进行民众动员和宣传鼓动。这些语言载体充分呈现了信息传播与教育认知相统一、情感沟通与艺术表达相统... 语言载体是人类重要的传播媒介和传播符号。在文化相对滞后的中央苏区,中共充分运用音乐歌谣类、戏剧舞蹈类、谈话讲演类的语言载体进行民众动员和宣传鼓动。这些语言载体充分呈现了信息传播与教育认知相统一、情感沟通与艺术表达相统一、价值灌输与思想启蒙相统一的特点,迅速快捷有效地传播着中共革命文化、革命情感和革命价值的红色文化,发挥着认知、沟通、调适、慰籍、激励和凝聚的功效。 展开更多
关键词 中央苏区 语言载体 形态 特征 功效
在线阅读 下载PDF
宋代帘箔考证与复原研究 预览
9
作者 黄连涵 《艺术设计研究》 CSSCI 2019年第3期73-78,共6页
本文以宋代帘箔为研究对象,通过图文互证的二重证据研究法,将宋代帘箔置于史料语境中,考证、复原三方面内容:宋代帘箔的使用功能与遮蔽组合、宋代帘箔的构件形态与装饰特征、宋代帘箔的等级因素与礼仪规约,并总结宋代帘箔的造物理念。
关键词 宋代帘箔 功能 形态 装饰 规约
在线阅读 下载PDF
商用车箱式液压举升机构设计研究与应用 预览
10
作者 徐世福 孙哲 +1 位作者 张蓉丽 徐世有 《汽车实用技术》 2019年第18期112-114,共3页
文章针对用户反馈箱式商用车使用过程中,后箱板和侧箱板的气弹簧的结构升降过程中,人手动升降、开启与闭合后箱板和侧箱板,操作不方便,可靠性和安全性低、工作执行力小且稳定性低、整个行程中力值变化较大、工作平稳性和响应方面比较差... 文章针对用户反馈箱式商用车使用过程中,后箱板和侧箱板的气弹簧的结构升降过程中,人手动升降、开启与闭合后箱板和侧箱板,操作不方便,可靠性和安全性低、工作执行力小且稳定性低、整个行程中力值变化较大、工作平稳性和响应方面比较差、实际使用寿命降低的情况,专门组织人员进行实际调研以及详细分析研究,根据以上情况进行专项的设计工作,通过设计后的样车在实际应用举升过程、开启闭合的响应时间、可靠性、安全性进行大批量验证,此方案根本性的解决后箱板和侧箱板升降困难、稳定性低、可靠性低的一种综合的解决方案。 展开更多
关键词 液压举升机构系统 组成 原理 微型液压动力单元 油缸
在线阅读 下载PDF
字体设计在新媒体时代下的创新与应用研究 预览
11
作者 周小丽 《辽宁师专学报:自然科学版》 2019年第2期88-90,94,共4页
字体设计在视觉元素表现上分为平面、立体和动态三种文字设计形式.详细分析了每种形式的特点,阐述了新媒体时代下字体设计在形态和传播媒介上的创新,以及在品牌形象、影视广告、电子商务网站中的具体应用,以便更好地从艺术性表达和功能... 字体设计在视觉元素表现上分为平面、立体和动态三种文字设计形式.详细分析了每种形式的特点,阐述了新媒体时代下字体设计在形态和传播媒介上的创新,以及在品牌形象、影视广告、电子商务网站中的具体应用,以便更好地从艺术性表达和功能性传播两方面实现文字的功能. 展开更多
关键词 表现形式 数字化 动态化 品牌形象 影视广告 电子商务网站
在线阅读 下载PDF
高海拔地区人类胎盘的形态变化 预览
12
作者 次旺拉姆 欧珠罗布 《高原科学研究》 CSCD 2019年第2期71-79,共9页
胎盘是对胎儿的生长发育起关键作用的一个特殊的器官,认为胎盘在高海拔地区低压低氧环境下所发生的形态改变在海拔相关性宫内生长受限的发病机制中发挥重要的作用。本文基于国内外高原与平原地区人类胎盘形态差异研究的现状,总结了高海... 胎盘是对胎儿的生长发育起关键作用的一个特殊的器官,认为胎盘在高海拔地区低压低氧环境下所发生的形态改变在海拔相关性宫内生长受限的发病机制中发挥重要的作用。本文基于国内外高原与平原地区人类胎盘形态差异研究的现状,总结了高海拔地区胎盘在大体和组织学层面所呈现的形态变化并分析了部分研究结果之间存在不一致性的原因,为研究世居高原人群免受海拔相关性宫内生长受限的机制提供参考资料。 展开更多
关键词 高海拔 胎盘 形态 胎儿
在线阅读 免费下载
Metaphysics Z 17’s Ontological Deduction of the Ε■δο■as Principle and Primary Substance through the Analysis of the Becoming 预览
13
作者 Fernando A.Riofrío 《哲学研究:英文版》 2019年第1期16-42,共27页
This research represents another of the various different versions of the Hylomorphism of the third millennium(some closer and some less close to the thought of Aristotle).Its aim is to find the most profound and basi... This research represents another of the various different versions of the Hylomorphism of the third millennium(some closer and some less close to the thought of Aristotle).Its aim is to find the most profound and basic intrinsic explanation of the being of the sense-perceptible substance,by means of a systematic approach to the theory of substance developed in the central books of Aristotle's Metaphysics.The theory of substance is based on the hylomorphic conception of the sense-perceptible substance,and reaches its culmination in Chapter 17 of Metaphysics Book Zeta,where Aristotle develops the definitive deeper argument that demonstrates the essence of substance.The argument is developed through a rigorous analysis of the sense-perceptible thing and its elements during the existence of the thing and after its corruption.The result obtained by this analysis is that none of the material components of a sense-perceptible thing,nor the sum of all of them,explain the constitution of the sense-perceptible thing,or its nature.And the final conclusion is that there exists an entity distinct from all of the material components,which is the arrangement and the essence of the sense-perceptible thing,that is,its form.The form also emerges as the primary cause of the being of the sense-perceptible thing and the primary substance,because it acts as the cause of matter and of the hylomorphic compound,and possesses the characters of substantiality in the maximum degree,being separate(τōχωριστòν)and being"a this"(τò?τóδετι).To take another angle,the soul is the form of biological organisms and man;and this investigation ends by establishing how the Aristotelian argument applies to a biological organism,and demonstrates that the soul is the first cause of this and the primary substance,by means of the distinction of the proximate matter and remote matter of the living being. 展开更多
关键词 PRIMARY substance definition of substance form matter Hylomorphism BECOMING CAUSE ARISTOTLE
在线阅读 下载PDF
Form and Interconversion Factor of Selenium in Soil 预览
14
作者 Ying XING Yongxian LIU +4 位作者 Panxia LIANG Qing LIAO Liping PAN Taiqing HUANG Zepu JIANG 《农业生物技术:英文版》 CAS 2019年第1期116-120,共5页
In recent years,production and processing of natural selenium-rich agricultural products has become a research hotspot.The main factor affecting the selenium content in plant is the content of effective selenium in so... In recent years,production and processing of natural selenium-rich agricultural products has become a research hotspot.The main factor affecting the selenium content in plant is the content of effective selenium in soil.So it is important to understand the form and conversion relationship of selenium in soil and find ways to improve selenium effectiveness.By summarizing the researches on selenium at home and abroad,we analyze the classification of soil selenium form,the transformation among different selenium forms and the improving factors of selenium effectiveness.We understand the relationship between chemical form and extraction form of selenium,analyze the driving factors of conversion among different forms,and discuss the ways to improve selenium effectiveness of soil in high selenium-rich area.By combining characteristics of soil and crop in different selenium-rich regions,different selenium activation methods are used,which could provide more scientific evidence for further selenium research. 展开更多
关键词 SOIL SELENIUM FORM CONVERSION FACTOR
在线阅读 下载PDF
Accretivity of the General Second Order Linear Differential Operator
15
作者 V.G.MAZ’YA I.E.VERBITSKY 《数学学报:英文版》 SCIE CSCD 2019年第6期832-852,共21页
For the general second order linear differential operator ■ with complex-valued distributional coefficients ajk, bj, and c in an open set Ω ? Rn(n ≥ 1), we present conditions which ensure that-L0 is accretive, i.e.... For the general second order linear differential operator ■ with complex-valued distributional coefficients ajk, bj, and c in an open set Ω ? Rn(n ≥ 1), we present conditions which ensure that-L0 is accretive, i.e., Re<-L0φ, φ >≥ 0 for all φ∈ C0∞(Ω). 展开更多
关键词 ACCRETIVE differential OPERATORS complex-valued COEFFICIENTS Schr?dinger operator form BOUNDEDNESS
浅谈建筑的方向性--以南京地铁标准站为例 预览
16
作者 蒋晨晨 《城市建筑》 2019年第13期146-148,共3页
方向性是建筑形体的基本属性之一,文章以南京市地铁标准站为例,通过田野调查法和比较研究法,对南京地铁站出入口的现状进行了评析,探讨了单一方向性地铁站出入口和无方向性地铁站出入口之间的关系,以期为地铁标准站的形态设计提供一定... 方向性是建筑形体的基本属性之一,文章以南京市地铁标准站为例,通过田野调查法和比较研究法,对南京地铁站出入口的现状进行了评析,探讨了单一方向性地铁站出入口和无方向性地铁站出入口之间的关系,以期为地铁标准站的形态设计提供一定的指导和参考。 展开更多
关键词 方向性 地铁标准站 形态
在线阅读 免费下载
The BLM realization for the integral form of Uv(glm|n)
17
作者 Xiaoyu Chen 《中国科学:数学英文版》 SCIE CSCD 2019年第2期351-370,共20页
In this paper, we embed the integral form of the quantum supergroup Uv(glm|n) to the product of a family of integral quantum Schur super algebras. We show that the image of the embedding is a free Z[v, v-1]-module by ... In this paper, we embed the integral form of the quantum supergroup Uv(glm|n) to the product of a family of integral quantum Schur super algebras. We show that the image of the embedding is a free Z[v, v-1]-module by finding the basis explicitly and calculating the fundamental multiplication formulas of these bases. Unlike the non-super case, the fundamental multiplication formula, which is the key step, is more complicated since we have to deal with the case of multiplying the odd root vectors. As a consequence, via the base change, we realize the quantum supergroup at roots of unity as a subalgebra of the product of quantum Schur superalgebras. Thus, we find a new basis of quantum supergroups at odd roots of unity which comes from quantum Schur superalgebras. 展开更多
关键词 QUANTUM supergroup QUANTUM SCHUR SUPERALGEBRA BLM basis INTEGRAL form
Suppression of oscillatory congestion via trunk link bandwidth and control gain in star network 预览
18
作者 Sainan WANG Shu ZHANG Jian XU 《应用数学和力学:英文版》 SCIE EI CSCD 2019年第1期25-48,共24页
The time delay-induced instability in an Internet congestion control model is investigated.The star topology is considered,and the link bandwidth ratio and the control gain are selected as the tunable parameters for c... The time delay-induced instability in an Internet congestion control model is investigated.The star topology is considered,and the link bandwidth ratio and the control gain are selected as the tunable parameters for congestion suppression.The stability switch boundary is obtained by the eigenvalue analysis for the linearized system around the equilibrium.To investigate the oscillatory congestion when the equilibrium becomes unstable,the center manifold reduction and the normal form theory are used to study the periodic oscillation induced by the delay.The theoretical analysis and numerical simulation show that the ratio between bandwidths of the trunk link and the regular link,rather than these bandwidths themselves,is crucial for the stability of the congestion control system.The present results demonstrate that it is not always effective to increase the link bandwidth ratio for stabilizing the system,and for some certain delays,adjusting the control gain is more efficient. 展开更多
关键词 Internet CONGESTION control HOPF BIFURCATION delayed differential equation stability normal form
在线阅读 下载PDF
The Substantive Reform of Court Trials: A Transformation of Logic in the Methods of Evidence Investigation-Summary of the Reform Pilot Project in Chengdu 预览
19
作者 Ma Jinghua Wang Jian(Translator) 《当代社会科学(英文)》 2019年第4期59-74,共16页
In the pilot project of the substantive reform of court trials,“unexpected” judgments appeared constantly because the traditional documentary investigation mode has been replaced by an investigation mode under the p... In the pilot project of the substantive reform of court trials,“unexpected” judgments appeared constantly because the traditional documentary investigation mode has been replaced by an investigation mode under the principle of directness and verbalism. This change in the logic of factual judgments has caused a change in the methods of evidence examination. In traditional evidence examination, evidence obtained from investigations is supposed to be genuine and reliable. In the substantive reform of court trials, it is presumed that evidence obtained from investigations cannot be fully trusted and it is easier to ascertain the facts of the case by investigating using the principles of directness, verbalism and individualized judging methods for evidence examinations. In practice, there are three main factors affecting the genuineness of evidence: the cognitive rules of testifiers, the motivation of the subjects who provide evidence, and the methods used by investigators to obtain evidence. Based on any one of these three factors, it cannot be concluded that evidence obtained from investigations is superior to evidence presented in court. The substantive court investigation is more advantageous to establishing the facts of a case than the traditional court investigation. The essential characteristics of the substantive reform of court trials are pursuing reality in essence instead of in form, and using the files of the court trials instead of the files of the investigation to avoid the evidence obtained through investigations from playing a decisive role in the adjudication thus making criminal procedures trial-centered rather than investigation-centered. 展开更多
关键词 the SUBSTANTIVE REFORM of court trials the METHODS of EVIDENCE INVESTIGATION trialcentered REALITY in essence REALITY in form
在线阅读 免费下载
自然的合目的性及其美学沉思
20
作者 李咏吟 《浙江社会科学》 CSSCI 北大核心 2019年第3期109-116,159共9页
康德的'自然的合目的性'理论,显示了《判断力批判》的现代性思想价值,这一理论为人类正确地理解自然提供了重要思想路径。自然的合目的性,既可以通过人类的主体性理解获得审美价值与生存智慧,又可以通过自然本身的形式美感与实... 康德的'自然的合目的性'理论,显示了《判断力批判》的现代性思想价值,这一理论为人类正确地理解自然提供了重要思想路径。自然的合目的性,既可以通过人类的主体性理解获得审美价值与生存智慧,又可以通过自然本身的形式美感与实体功能形成真正科学理性的解释。在反思自然中,我们必须承认,自然存在永远独立于人类存在,人类只有自由地建立与自然的智慧联系,才能获得生命永续发展的自由。 展开更多
关键词 自然的合目的性 形式的合目的性 实践的合目的性 美学
上一页 1 2 250 下一页 到第
使用帮助 返回顶部 意见反馈