期刊文献+
共找到51篇文章
< 1 2 3 >
每页显示 20 50 100
Sociological Complexity Theory:From Epistemology to Empirical Methodology
1
作者 Rina Manuela Contini 《Sociology Study》 2023年第3期105-115,共11页
This study,through a re-conceptualization of sociological complexity theory’s epistemological sources,specifically in Edgar Morin’s formulation,sheds light on the theoretical models as well as empirical methodologie... This study,through a re-conceptualization of sociological complexity theory’s epistemological sources,specifically in Edgar Morin’s formulation,sheds light on the theoretical models as well as empirical methodologies of sociological analysis of today’s complex,interconnected,diverse and globalized society and global disorder.Complexity theory leads to a shift in perspective and a transformation of the epistemological status of social sciences with an in-depth intervention of disorder,contingency,case,singular,and non-repeatable in the sociological analysis.The notion of dialogic interplay is placed at the paradigm level and stands out at the heart of the concepts,analyzing the social system as auto-eco-organizer.Similarly,the notion of‘emergence’at macro-micro levels imposes itself as complex,logically requiring overcoming simple,linear thinking and model of explanation to adopt the perspective of organizational rotativity in which the product retroacts by transforming the one producing it,by conceiving a circularity of co-production between individuals and society through interactions.Declining epistemology and sociological complexity theory in the empirical methodology setting,the complex sociological approach is phenomenon-,event/information-and crisis-centered,privileging observation,participation-intervention,and‘live inquiry’.The open,in-depth and possibly non-directive interview is part of clinical sociological methodology,raising the question of the observer-phenomenon-observed relation. 展开更多
关键词 complexity sociology theory and methodology social system EMERGENCE micro-macro analysis participation-intervention
下载PDF
An improvement on measure methods of the complexity theory and its applications
2
作者 王福来 杨辉煌 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第9期4042-4048,共7页
A new method is proposed to transform the time series gained from a dynamic system to a symbolic series which extracts both overall and local information of the time series. Based on the transformation, two measures a... A new method is proposed to transform the time series gained from a dynamic system to a symbolic series which extracts both overall and local information of the time series. Based on the transformation, two measures are defined to characterize the complexity of the symbolic series. The measures reflect the sensitive dependence of chaotic systems on initial conditions and the randomness of a time series, and thus can distinguish periodic or completely random series from chaotic time series even though the lengths of the time series are not long. Finally, the logistic map and the two-parameter Henon map are studied and the results are satisfactory. 展开更多
关键词 complexity theory complexity dynamic system CHAOS
下载PDF
Complexity Theory, Emergence, and Translation: Educating Translators as Agents of Human Interaction in a Complex Society
3
作者 Kobus Marais 《Sino-US English Teaching》 2013年第9期725-735,共11页
This paper sets out to argue the relevance for translation studies of complexity theory. It endeavours to argue, though briefly, that translation can be conceptualized as an emergent concept. It then indicates how the... This paper sets out to argue the relevance for translation studies of complexity theory. It endeavours to argue, though briefly, that translation can be conceptualized as an emergent concept. It then indicates how theories of emergence in social studies provide new scope to theorise agency. Lastly, it considers the implications of the conceptualization for translator education. The arguments put forward in this paper lay the foundation for a philosophy of translation, i.e., a meta-theory of translation in which translation is viewed both as emerging from particular complex human interactions such as language and as being co-determined by complex contextual factors. 展开更多
关键词 translation studies complexity theory EMERGENCE translator pedagogy translator agency
下载PDF
A Complexity Theory Perspective on the Dynamics of Second Language Learning Strategies and the Theoretical Implications
4
作者 黄智广 江思华 +3 位作者 杨晓焱 卢家惠 罗嫦奔 何小清 《海外英语》 2021年第7期269-271,共3页
This paper presents a qualitative study to investigate the dynamics in second language(L2)learning strategies under the guidance of the complexity theory.A group of Chinese undergraduate students studying at an intern... This paper presents a qualitative study to investigate the dynamics in second language(L2)learning strategies under the guidance of the complexity theory.A group of Chinese undergraduate students studying at an international university in Thailand were selected as the research participants.Research instruments include interviews,observations,records of participants’on-line chat and posts,and a research journal.The research findings indicate that the changes in the participants’strategies for learning English exhibit typical features of the complex system.The study will provide implications for probing into the nature of L2 strategy and for applying complexity theory to future researches on L2 strategies. 展开更多
关键词 second language learning strategies complexity theory complex system DYNAMICS
下载PDF
Complex adaptive system theory,agent-based modeling,and simulation in dominant technology formation
5
作者 ZHANG Ruihan SUN Bing 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2024年第1期130-153,共24页
Dominant technology formation is the key for the hightech industry to“cross the chasm”and gain an established foothold in the market(and hence disrupt the regime).Therefore,a stimulus-response model is proposed to i... Dominant technology formation is the key for the hightech industry to“cross the chasm”and gain an established foothold in the market(and hence disrupt the regime).Therefore,a stimulus-response model is proposed to investigate the dominant technology by exploring its formation process and mechanism.Specifically,based on complex adaptive system theory and the basic stimulus-response model,we use a combination of agent-based modeling and system dynamics modeling to capture the interactions between dominant technology and the socio-technical landscape.The results indicate the following:(i)The dynamic interaction is“stimulus-reaction-selection”,which promotes the dominant technology’s formation.(ii)The dominant technology’s formation can be described as a dynamic process in which the adaptation intensity of technology standards increases continuously until it becomes the leading technology under the dual action of internal and external mechanisms.(iii)The dominant technology’s formation in the high-tech industry is influenced by learning ability,the number of adopting users and adaptability.Therein,a“critical scale”of learning ability exists to promote the formation of leading technology:a large number of adopting users can promote the dominant technology’s formation by influencing the adaptive response of technology standards to the socio-technical landscape and the choice of technology standards by the socio-technical landscape.There is a minimum threshold and a maximum threshold for the role of adaptability in the dominant technology’s formation.(iv)The socio-technical landscape can promote the leading technology’s shaping in the high-tech industry,and different elements have different effects.This study promotes research on the formation mechanism of dominant technology in the high-tech industry,presents new perspectives and methods for researchers,and provides essential enlightenment for managers to formulate technology strategies. 展开更多
关键词 complex adaptive system theory agent-based modeling and simulation dominant technology socio-technical landscape adaptation-choice
下载PDF
Progress in Computational Complexity Theory
6
作者 蔡进一 朱洪 《Journal of Computer Science & Technology》 SCIE EI CSCD 2005年第6期735-750,共16页
We briefly survey a number of important recent uchievements in Theoretical Computer Science (TCS), especially Computational Complexity Theory. We will discuss the PCP Theorem, its implications to inapproximability o... We briefly survey a number of important recent uchievements in Theoretical Computer Science (TCS), especially Computational Complexity Theory. We will discuss the PCP Theorem, its implications to inapproximability on combinatorial optimization problems; space bounded computations, especially deterministic logspace algorithm for undirected graph connectivity problem; deterministic polynomial-time primality test; lattice complexity, worst-case to average-case reductions; pseudorandomness and extractor constructions; and Valiant's new theory of holographic algorithms and reductions. 展开更多
关键词 theoretical computer science computational complexity theory PCP theorem INAPPROXIMABILITY logspace complexity Reingold's theorem GAP problem primality testing complexity of lattice problems worst-case to average-case reductions PSEUDORANDOMNESS EXTRACTORS holographic algorithms
原文传递
The Complex Field Theory and Mass Formation—An Alternative Model to Higgs Mechanism
7
作者 Hossin Abdeldayem 《Journal of Modern Physics》 CAS 2023年第5期562-572,共11页
The electromagnetic force, strong nuclear force, weak nuclear force, and gravitational force are the four fundamental forces of nature. The Standard Model (SM) succeeded in combining the first three forces to describe... The electromagnetic force, strong nuclear force, weak nuclear force, and gravitational force are the four fundamental forces of nature. The Standard Model (SM) succeeded in combining the first three forces to describe the most basic building blocks of matter and govern the universe. Despite the model’s great success in resolving many issues in particle physics but still has several setbacks and limitations. The model failed to incorporate the fourth force of gravity. It infers that all fermions and bosons are massless contrary to experimental facts. In addition, the model addresses neither the 95% of the universe’s energy of Dark Matter (DM) and Dark Energy (DE) nor the universe’s expansion. The Complex Field Theory (CFT) identifies DM and DE as complex fields of complex masses and charges that encompasses the whole universe, and pervade all matter. This presumption resolves the issue of failing to detect DM and DE for the last five decades. The theory also presents a model for the universe’s expansion and presumes that every material object carries a fraction of this complex field proportional to its mass. These premises clearly explain the physical nature of the gravitational force and its complex field and pave the way for gravity into the SM. On the other hand, to solve the issue of massless bosons and fermions in the SM, Higgs mechanism introduces a pure and abstractive theoretical model of unimaginable four potentials to generate fictitious bosons as mass donors to fermions and W± and Z bosons. The CFT in this paper introduces, for the first time, a physical explanation to the mystery of the mass formation of particles rather than Higgs’ pure mathematical derivations. The analyses lead to uncovering the mystery of electron-positron production near heavy nuclei and never in a vacuum. In addition, it puts a constraint on Einstein’s mass-energy equation that energy can never be converted to mass without the presence of dense dark matter and cannot be true in a vacuum. Furthermore, CFT provides different perspectives and resolves real-world physics concepts such as the nuclear force, Casimir force, Lamb’s shift, and the anomalous magnetic moment to be published elsewhere. 展开更多
关键词 Quantum Field theory Complex Field theory Standard Model Higgs Mechanism BOSONS FERMIONS
下载PDF
Complex Systems Theory: Some Considerations for Sociology 被引量:1
8
作者 Rosalia Condorelli 《Open Journal of Applied Sciences》 2016年第7期422-448,共28页
This essay presents a reflection on the main implications of Complexity Theory for science in general, redefining and dispelling myths of traditional science, and Sociology in particular, suggesting a redefinition of ... This essay presents a reflection on the main implications of Complexity Theory for science in general, redefining and dispelling myths of traditional science, and Sociology in particular, suggesting a redefinition of Parsons’ classic concept of Social System, articulated around the property of self-maintenance of order rather than on its possible discontinuity and instability. It argues that Complexity Theory has established the limits of Classic Science, leading to a more realistic awareness of working and evolution mechanisms of Natural and Social Systems and showing the limits of our capacity to predict and control events. Dissipative structures have shown the creative role of time. Instability, emergence, surprise, unpredictability are the rule rather than the exception when systems move away from equilibrium (entropy), even if these processes are generated from a system’s deterministic working mechanisms. Therefore, we have come to realize how constructive the contribution of Complexity is, in regards to the long lasting problem of the relationship between order and disorder. Today, the terms of this relationship have been re-specified in its new configuration of inter-relationship link, according to a unicum which finds its synthesis in self-organization and deterministic chaos concepts. From this perspective, as Prigogine suggested, studies on Complex Systems are heading toward a historical, biological conception of Physics, and a new alliance between natural systems and living, social systems. Non-linearity, far from equilibrium self-organization, emergence and surprise meet at all levels, as this paper attempts to highlight. In Sociology, insights of Complexity Theory have contributed to a new way of thinking about social systems, by re-addressing some fundamental issues starting to social system, emergence and change concepts. The current social system conception as complex dynamical systems is supported by a profitable use of non-liner models (in particular, the Logistic map) in the study of social processes. 展开更多
关键词 complexity theory Complex Adaptive and Autopoietic Systems SELF-ORGANIZATION EMERGENCE SURPRISE Complex Social Systems complexity theory in Sociology
下载PDF
A complexity measure approach based on forbidden patterns and correlation degree
9
作者 王福来 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第6期177-183,共7页
Based on forbidden patterns in symbolic dynamics, symbolic subsequences are classified and relations between forbidden patterns, correlation dimensions and complexity measures are studied. A complexity measure approac... Based on forbidden patterns in symbolic dynamics, symbolic subsequences are classified and relations between forbidden patterns, correlation dimensions and complexity measures are studied. A complexity measure approach is proposed in order to separate deterministic (usually chaotic) series from random ones and measure the complexities of different dynamic systems. The complexity is related to the correlation dimensions, and the algorithm is simple and suitable for time series with noise. In the paper, the complexity measure method is used to study dynamic systems of the Logistic map and the Henon map with multi-parameters. 展开更多
关键词 complexity theory forbidden words symbolic dynamics correlation dimensions
下载PDF
Study on the Complexity of the Bullwhip Effect
10
作者 LU Yingjin, TANG Yong, Tang Xiaowo (School of Management, University of Electronic Science and Technology of China Chengdu 610054 China) 《Journal of Electronic Science and Technology of China》 2004年第3期86-91,共6页
Recent years have witnessed a rapid growth of interest in the study of the dynamic behavior of replenishment rules of bullwhip effect. We prove that bullwhip effect and butterfly effect share a same the self-oscillati... Recent years have witnessed a rapid growth of interest in the study of the dynamic behavior of replenishment rules of bullwhip effect. We prove that bullwhip effect and butterfly effect share a same the self-oscillation amplifying mechanism that is the ordering decisions the supplier self-oscillation amplify the perturbations brought by the errors in the processing of retailers' demand information. This results as an explicit self-similar structure of the sensitivity of the system to the initial values duty to the nonlinear mechanism. In this paper, the causes process of the bullwhip effect is described as the internal nonlinear mechanism and study on the complexity of bullwhip effect for order-up-to policy under demand signal processing. The methodology is based on fractal and chaotic theory and allows important insights to be gained about the complexity behavior of bullwhip effect. 展开更多
关键词 the bullwhip effect complexity theory order-up-to policy demand signal processing
下载PDF
Aviation Accident Causation Analysis Based on Complex Network Theory 被引量:11
11
作者 YUE Rentian LI Junwei HAN Meng 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2021年第4期646-655,共10页
Accident causation analysis is of great importance for accident prevention.In order to improve the aviation safety,a new analysis method of aviation accident causation based on complex network theory is proposed in th... Accident causation analysis is of great importance for accident prevention.In order to improve the aviation safety,a new analysis method of aviation accident causation based on complex network theory is proposed in this paper.Through selecting 257 accident investigation reports,45 causative factors and nine accident types are obtained by the three-level coding process of the grounded theory,and the interaction of these factors is analyzed based on the“2-4”model.Accordingly,the aviation accident causation network is constructed based on complex network theory which has scale-free characteristics and small-world properties,the characteristics of causative factors are analyzed by the topology of the network,and the key causative factors of the accidents are identified by the technique for order of preference by similarity to ideal solution(TOPSIS)method.The comparison results show that the method proposed in this paper has the advantages of independent of expert experience,quantitative analysis of accident causative factors and statistical analysis of a lot of accident data,and it has better applicability and advancement. 展开更多
关键词 aviation safety accident causation complex network theory grounded theory “2-4”model
下载PDF
Dependency-based importance measures of components in mechatronic systems with complex network theory 被引量:1
12
作者 Yin Yong Wang Shuxin 《Journal of Southeast University(English Edition)》 EI CAS 2022年第2期137-144,共8页
To compensate for the limitations of previous studies,a complex network-based method is developed for determining importance measures,which combines the functional roles of the components of a mechatronic system and t... To compensate for the limitations of previous studies,a complex network-based method is developed for determining importance measures,which combines the functional roles of the components of a mechatronic system and their topological positions.First,the dependencies among the components are well-represented and well-calculated.Second,a mechatronic system is modeled as a weighted and directional functional dependency network(FDN),in which the node weights are determined by the functional roles of components in the system and their topological positions in the complex network whereas the edge weights are represented by dependency strengths.Third,given that the PageRank algorithm cannot calculate the dependency strengths among components,an improved PageRank importance measure(IPIM)algorithm is proposed,which combines the node weights and edge weights of complex networks.IPIM also considers the importance of neighboring components.Finally,a case study is conducted to investigate the accuracy of the proposed method.Results show that the method can effectively determine the importance measures of components. 展开更多
关键词 importance measure mechatronic system DEPENDENCY complex network theory
下载PDF
Study on Gait Planning of Dynamic Walking of Biped Robots Based on Optimization Theory
13
作者 谭冠政 《High Technology Letters》 EI CAS 1997年第1期22-25,共4页
In this paper, two important problems in the gait planning of dynamic walking of biped robot, i.e., finding inverse kinematic solution and constructing joint trajectories, are studied in detail by adopting complex opt... In this paper, two important problems in the gait planning of dynamic walking of biped robot, i.e., finding inverse kinematic solution and constructing joint trajectories, are studied in detail by adopting complex optimization theory. The optimization algorithm for finding the inverse kinematic solution is developed, the construction method of joint trajectories is given, and the gait planning method of dynamic walking of biped robots is proposed. 展开更多
关键词 Biped robot Dynamic walking Gait planning Complex optimization theory
下载PDF
Reconstructing Equation of State for Dark Energy in Double Complex Symmetric Gravitational Theory
14
作者 SHAO Ying GUI Yuan-Xing WANG Wei 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第6期1148-1152,共5页
We propose to study the accelerating expansion of the universe in the double complex symmetric gravitational theory (DCSGT). The universe we live in is taken as the real part of the whole spacetime MC^4(J), which ... We propose to study the accelerating expansion of the universe in the double complex symmetric gravitational theory (DCSGT). The universe we live in is taken as the real part of the whole spacetime MC^4(J), which is double complex. By introducing the spatially flat FRW metric, not only the double Friedmann equations but also the two constraint conditions py = 0 and J^2 = 1 are obtained. Farthermore, using parametric DL(z) ansatz, we reconstruct the ω/(z) and V(Ф) for dark energy from real observational data. We find that in the two cases of J = i, pJ = 0, and J = ε, pJ≠0, the corresponding equations of state ω'(z) remain close to -1 at present (z = 0) and change from below -1 to above -1. The results illustrate that the whole spacetime, i.e. the double complex spacetime MC^4(J), may be either ordinary complex (J = i, pJ = 0) or hyperbolic complex (J = ε, pJ≠ 0). And the fate of the universe would be Big Rip in the future. 展开更多
关键词 double complex symmetric gravitational theory equation of state dark energy
下载PDF
RESEARCH ON KEY NODES OF WIRELESS SENSOR NETWORK BASED ON COMPLEX NETWORK THEORY
15
作者 Ma Chuang Liu Hongwei Zuo Decheng Wu Zhibo Yang Xiaozong 《Journal of Electronics(China)》 2011年第3期396-401,共6页
On the basis of complex network theory, the issues of key nodes in Wireless Sensor Networks (WSN) are discussed. A model expression of sub-network fault in WSN is given at first; subsequently, the concepts of average ... On the basis of complex network theory, the issues of key nodes in Wireless Sensor Networks (WSN) are discussed. A model expression of sub-network fault in WSN is given at first; subsequently, the concepts of average path length and clustering coefficient are introduced. Based on the two concepts, a novel attribute description of key nodes related to sub-networks is proposed. Moreover, in terms of node deployment density and transmission range, the concept of single-point key nodes and generalized key nodes of WSN are defined, and their decision theorems are investigated. 展开更多
关键词 Wireless Sensor Network (WSN) Key nodes Fault model Complex network theory
下载PDF
Developmental Routines of Oral English Ability for English Major Students:Based on Complex and Dynamic Systems Theory
16
作者 MA Yi-ze CHEN Zheng 《Journal of Literature and Art Studies》 2022年第9期916-924,共9页
This study employs a Q methodology to explore the developmental routines of oral English ability for 12 English major students in China inspired by Complex and Dynamic Systems Theory(CDST).The data analysis suggests t... This study employs a Q methodology to explore the developmental routines of oral English ability for 12 English major students in China inspired by Complex and Dynamic Systems Theory(CDST).The data analysis suggests the next findings:(1)two developmental patterns emerge as the gradual improvement and the strong phase shift influenced by internal and external factors for interactions among different subsystems;(2)guided by CDST,the study proves the importance of self-organization and initial condition in previous studies.According to the above findings,It is highly suggested for teachers to form a holistic view of students’oral English development concerning the non-linear characteristic and individual differences. 展开更多
关键词 oral English Complex and Dynamic Systems theory(CDST) developmental routines Q methodology
下载PDF
Special Issue on New Trends in Theory and Applications of Complex Control Systems
17
《控制理论与应用(英文版)》 EI 2008年第1期1-1,共1页
Complexity is one of the leading features of modem control systems. It is caused by the complex properties of controlled plants and the varied requirements in controller designs. In dealing with the control problems w... Complexity is one of the leading features of modem control systems. It is caused by the complex properties of controlled plants and the varied requirements in controller designs. In dealing with the control problems with complexity, in the past two decades, a lot of papers have been published that reported fruitful results on different theoretical backgrounds and with different methodologies, such as differential geometry-based design methods, hybrid system theory, switching control, neural network-based intelligent control, etc. 展开更多
关键词 Special Issue on New Trends in theory and Applications of Complex Control Systems
下载PDF
Analysis and Design of Broadband Stacked Microstrip Patch Antennas 被引量:1
18
作者 徐晓文 徐健 +2 位作者 刘章发 朱伯承 李世智 《Journal of Beijing Institute of Technology》 EI CAS 1997年第4期61-66,共6页
A broadband microstrip patch antenna was analyzed and designed.Full wave analysis method(FWAM) was employed to show that a stacked microstrip dual patch antenna(SMDPA) might have a much wider bandwidth than that of ... A broadband microstrip patch antenna was analyzed and designed.Full wave analysis method(FWAM) was employed to show that a stacked microstrip dual patch antenna(SMDPA) might have a much wider bandwidth than that of the ordinanry uni patch one.By means of discrete complex image theory(DCIT),the Sommerfeld integrals (SI) involved were accurately calculated at a speed several hundred times faster than numerical integration method(NIM).The feeding structure of the SMDPA was then improved and the bandwidth was extended to about 22% or more for voltage standing wave ratio (VSWR)s≤2 Finally,a matching network was constructed to obtain a bandwidth of about 25% for s≤1.5. 展开更多
关键词 broadband patch antennas full wave analysis complex image theory Sommerfeld integrals broadband matching
下载PDF
A Non-canonical Example to Support P Is Not Equal to NP 被引量:1
19
作者 杨正瓴 《Transactions of Tianjin University》 EI CAS 2011年第6期446-449,共4页
The more unambiguous statement of the P versus NP problem and the judgement of its hardness, are the key ways to find the full proof of the P versus NP problem. There are two sub-problems in the P versus NP problem. T... The more unambiguous statement of the P versus NP problem and the judgement of its hardness, are the key ways to find the full proof of the P versus NP problem. There are two sub-problems in the P versus NP problem. The first is the classifications of different mathematical problems (languages), and the second is the distinction between a non-deterministic Turing machine (NTM) and a deterministic Turing machine (DTM). The process of an NTM can be a power set of the corresponding DTM, which proves that the states of an NTM can be a power set of the corresponding DTM. If combining this viewpoint with Cantor's theorem, it is shown that an NTM is not equipotent to a DTM. This means that "generating the power set P(A) of a set A" is a non-canonical example to support that P is not equal to NP. 展开更多
关键词 P versus NP computational complexity theory Cantor's theorem power set continuum hypothesis
下载PDF
Quantifying Likelihood in Digital Forensic Investigations 被引量:1
20
作者 Richard E Overill 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2014年第6期1-4,共4页
While the conventional forensic scientists routinely validate and express the results of their investigations quantitatively using statistical measures from probability theory,digital forensics examiners rarely if eve... While the conventional forensic scientists routinely validate and express the results of their investigations quantitatively using statistical measures from probability theory,digital forensics examiners rarely if ever do so.In this paper,we review some of the quantitative tools and techniques which are available for use in digital forensic investigations,including Bayesian networks,complexity theory,information theory and probability theory,and indicate how they may be used to obtain likelihood ratios or odds ratios for the relative plausibility of alternative explanations for the creation of the recovered digital evidence.The potential benefits of such quantitative measures for modern digital forensics are also outlined. 展开更多
关键词 likelihood ratio odds ratio Bayesian network power law statistics probability theory complexity theory information theory
下载PDF
上一页 1 2 3 下一页 到第
使用帮助 返回顶部