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Search Results: 1 - 10 of 822 matches for " Jialiang Kou "
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Multiobjective Optimization of Evacuation Routes in Stadium Using Superposed Potential Field Network Based ACO
Jialiang Kou,Shengwu Xiong,Zhixiang Fang,Xinlu Zong,Zhong Chen
Computational Intelligence and Neuroscience , 2013, DOI: 10.1155/2013/369016
Abstract: Multiobjective evacuation routes optimization problem is defined to find out optimal evacuation routes for a group of evacuees under multiple evacuation objectives. For improving the evacuation efficiency, we abstracted the evacuation zone as a superposed potential field network (SPFN), and we presented SPFN-based ACO algorithm (SPFN-ACO) to solve this problem based on the proposed model. In Wuhan Sports Center case, we compared SPFN-ACO algorithm with HMERP-ACO algorithm and traditional ACO algorithm under three evacuation objectives, namely, total evacuation time, total evacuation route length, and cumulative congestion degree. The experimental results show that SPFN-ACO algorithm has a better performance while comparing with HMERP-ACO algorithm and traditional ACO algorithm for solving multi-objective evacuation routes optimization problem. 1. Introduction The evacuation planning in large-scale public area usually possesses two difficult points:(1)large scale: the large-scale public area has a complex flat structure. And it can hold thousands of people.(2)multisource and multisink: in evacuation process, the evacuees often start at different places in public area and run away from different exits. In a word, the evacuation planning in large-scale public area is a challenging problem. For solving this problem, researchers have put forward some effective methods. Shi et al. [1] used agent-based model to simulate and analyze evacuation process in large public building under fire conditions. Chen and Miller-Hooks [2] employed Benders decomposition to determine a set of evacuation routes and the assignment of evacuees to these routes for large building. Tayfur and Taaffe [3] utilized linear programming relaxation to model and solve a resource requirements and scheduling problem during hospital evacuations with the objective of minimizing cost within a prespecified evacuation completion time. Fang et al. [4] modeled evacuation process in a teaching building with multiexits, simulated it by cellular automata, and analyzed the multiexits choice phenomenon to find out the optimal exits choice combination for all evacuees. Usually, multiple macroscopic objectives are required to be considered in actual evacuation planning, and a set of nondominated plans are needed for decision making. Thus, evacuation planning problem could be transformed into multi-objective optimization problem. However, just a few researches, such as the literature [5–7], focused on that. Among these pieces of literature, the literature [7] successfully solved the multi-objective
Effects of the Chinese Innovation System on Regional Innovation Performance  [PDF]
Kou Kou
Technology and Investment (TI) , 2018, DOI: 10.4236/ti.2018.91003
Abstract: This paper presents the influence of innovation systems on regional innovation performance in China for the period 1998-2008. It places special emphasis on the effects of institutional factors, namely marketization level. The findings indicate that the innovation system contributes greatly to increasing the level of innovation. Among the factors of innovation systems, the openness of the region and government expenditure on education plays key roles. Market-oriented institutional arrangements also increase innovation performance.
Partial identification by site-directed mutagenesis of a cell growth inhibitory site on the human galectin-1 molecule
Ken Scott, Jialiang Zhang
BMC Cell Biology , 2002, DOI: 10.1186/1471-2121-3-3
Abstract: We have made recombinant human galectin-1 as a bacterial fusion protein with an N-terminal hexahistidine tag. This protein displays both haemagglutination and growth-inhibitory activities, even in the presence of the hexahistidine tag. Site-directed mutagenesis of this protein has confirmed the independent nature of the protein sites responsible for the two biological activities. Mutant proteins were created, which displayed each activity in the absence of the other.Human galectin-1 possesses a growth-inhibitory site, which is not part of the β-galactoside binding site. A surface loop, comprising amino acid residues 25–30, and joining two internal β-strands, forms part of the growth-inhibitory site. This region is relatively close to the N-terminus of the protein, and N-terminal substitutions or extensions also affect growth-inhibitory activity. Further experiments will be necessary to fully define this site.It is now widely accepted that several galectins, and galectin-1 in particular, have biological functions over and above their obvious role in the binding or cross-linking of β-galactoside-containing glycans [1-3]. The concept of a galactose-binding protein as a negative growth regulator was first seriously proposed when a protein from mouse fibroblast cultures, the murine homologue of galectin-1, was shown to have both properties [4]. These workers went on to demonstrate that growth-inhibitory activity of this mGBP was present even when it bound a glycan at its galactose-binding site [5], suggesting that the two properties were independent functions of galectin-1. In fact, evidence for a growth-inhibitory phase could be seen in several earlier reports of the mitogenic activity of galectins from other species [6-8]. There was some evidence for a similar activity associated with human galectin-1, and it was suggested that proteolysis of secreted galectin-1 could account in part for the action of a growth-related cell-surface proteinase [9].In an attempt to test t
Multi-threshold Accelerate Failure Time Model
Baisuo Jin,Jialiang Li
Statistics , 2015,
Abstract: A two-stage procedure for simultaneously detecting multiple thresholds and achieving model selection in the segmented accelerate failure time (AFT) model is developed in this paper. In the first stage, we formulate the threshold problem as a group model selection problem so that a concave 2-norm group selection method can be applied. In the second stage, the thresholds are finalized via a refining method. We establish the strong consistency of the threshold estimates and regression coefficient estimates under some mild technical conditions. The proposed procedure performs satisfactorily in our extensive simulation studies. Its real world applicability is demonstrated via analyzing a follicular lymphoma data.
Analysis and Comparison of Five Kinds of Typical Device-Level Embedded Operating Systems  [PDF]
Jialiang WANG, Hai ZHAO, Peng LI, Hui LI, Bo LI
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.31010
Abstract: Today, the number of embedded system was applied in the field of automation and control has far exceeded a variety of general-purpose computer. Embedded system is gradually penetrated into all fields of human society, and ubiquitous embedded applications constitute the "ubiquitous" computing era. Embedded operating system is the core of the em-bedded system, and it directly affects the performance of the whole system. Our Liaoning Provincial Key Laboratory of Embedded Technology has successfully developed five kinds of device-level embedded operating systems by more than ten years’ efforts, and these systems are Webit 5.0, Worix, μKernel, iDCX 128 and μc/os-II 128. This paper mainly analyses and compares the implementation mechanism and performance of these five kinds of device-level embedded operating systems in detail.
The Design and Implement of TCP/IP Protocol Cluster on AVR Singlechip  [PDF]
Rong Pan, Hai Zhao, Jialiang Wang, Dan Liu, Penghua Cai
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.38088
Abstract: With the rapid development of the embedded technology, research and implement of the Internet of things will be a new technology revolution, yet the implement of the Internet of things is on the base of the communication between the things. For this reason, realizing the function of communication between singlechip is particularly important. Based on the characteristics of the embedded microcontroller, we analyzed the traditional PC TCP/IP protocol, and appropriately tailored TCP/IP protocol cluster on the basis of the characteristics of embedded singlechip. At last, we realized the reduced TCP/IP protocol cluster suitable for embedded singlechip, on AVR singlechip platform.

Zhou Jialiang,

系统科学与数学 , 1998,
Abstract: The present situation of research and application concerning the tandemqueuing system is presented in the literature1]. So far the study of it has been limited to 2stages. In this paper the N-stage tandem queuing system with finite capacity in each stage(thus blocking may be caused) is studied. And for the first time, by using a series of techniquesof recursive expression, such as the state-space and generator matrix of Markov process and theexpression of solution, we obtain the accurate and explicit solution of the distribution of thequeue length, the busy period and the sojourn time of the present system. Since the operationof matrix and recursion is easy to perform on computers, the conclusion of this paper can beconveniently applied.

Xu Jialiang,

地理学报 , 1993,
Abstract: 本文根据1873—1990年上海的年、冬、夏平均气温资料,并利用1956—1990年其郊区气温资料,对城市热岛效应对气温的影响作了处理,重建了近118a的上海气温序列。在此基础上对上海的气温变化特征进行分析,并与同期的北半球气温变化作了比较。结果表明,上海的气温变化有其明显的阶段性、跃变性和周期性。近百余年上海气温变化的总体特征与北半球相似,呈缓慢变暖趋势,但具体的变化过程和幅度有差别,尤其近20多年来的变化与北半球不一致,没有明显的增温现象。
Effective Beam Width of Directional Antennas in Wireless Ad Hoc Networks
Jialiang Zhang,Soung Chang Liew
Mathematics , 2007,
Abstract: It is known at a qualitative level that directional antennas can be used to boost the capacity of wireless ad hoc networks. Lacking is a measure to quantify this advantage and to compare directional antennas of different footprint patterns. This paper introduces the concept of the effective beam width (and the effective null width as its dual counterpart) as a measure which quantitatively captures the capacity-boosting capability of directional antennas. Beam width is commonly defined to be the directional angle spread within which the main-lobe beam power is above a certain threshold. In contrast, our effective beam width definition lumps the effects of the (i) antenna pattern, (ii) active-node distribution, and (iii) channel characteristics, on network capacity into a single quantitative measure. We investigate the mathematical properties of the effective beam width and show how the convenience afforded by these properties can be used to analyze the effectiveness of complex directional antenna patterns in boosting network capacity, with fading and multi-user interference taken into account. In particular, we derive the extent to which network capacity can be scaled with the use of phased array antennas. We show that a phased array antenna with N elements can boost transport capacity of an Aloha-like network by a factor of order N^1.620.
A Study on the Security Mechanism for Web Services
Kou Hongzhao
Lecture Notes in Engineering and Computer Science , 2010,
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