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Search Results: 1 - 10 of 1965 matches for " Dingjun Lou "
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An Algorithm to Find the Optimal Matching in Halin Graphs
Yunting Lu,Yueping Li,Dingjun Lou
IAENG International Journal of Computer Science , 2007,
Bipartite graphs with a perfect matching and digraphs
Zan-Bo Zhang,Dingjun Lou
Mathematics , 2010,
Abstract: In this paper, we introduce a corresponding between bipartite graphs with a perfect matching and digraphs, which implicates an equivalent relation between the extendibility of bipartite graphs and the strongly connectivity of digraphs. Such an equivalent relation explains the similar results on $k$-extendable bipartite graphs and $k$-strong digraphs. We also study the relation among $k$-extendable bipartite graphs, $k$-strong digraphs and combinatorial matrices. For bipartite graphs that are not 1-extendable and digraphs that are not strong, we prove that the elementary components and strong components are counterparts.
Equivalence between Extendibility and Factor-Criticality
Zan-Bo Zhang,Tao Wang,Dingjun Lou
Mathematics , 2010,
Abstract: In this paper, we show that if $k\geq (\nu+2)/4$, where $\nu$ denotes the order of a graph, a non-bipartite graph $G$ is $k$-extendable if and only if it is $2k$-factor-critical. If $k\geq (\nu-3)/4$, a graph $G$ is $k\ 1/2$-extendable if and only if it is $(2k+1)$-factor-critical. We also give examples to show that the two bounds are best possible. Our results are answers to a problem posted by Favaron [3] and Yu [11].
Notes on factor-criticality, extendibility and independence number
Zan-Bo Zhang,Dingjun Lou,Xiaoyan Zhang
Mathematics , 2010,
Abstract: In this paper, we give a sufficient and necessary condition for a $k$-extendable graph to be $2k$-factor-critical when $k=\nu/4$, and prove some results on independence numbers in $n$-factor-critical graphs and $k\frac{1}{2}$-extendable graphs.
Research on Optimization Model and Algorithm of Initial Schedule of Intercity Passenger Trains based on Fuzzy Sets
Dingjun Chen,Kaiteng Wu
Journal of Software , 2012, DOI: 10.4304/jsw.7.1.49-54
Abstract: The initial schedule of passenger trains is the base of train working diagram . Taking the maximization of passenger satisfaction as the objective function and considering some constraint conditions such as the coordinate utilization of arrival and departure tracks and train-set joining time, etc, a mathematics model for optimizing the initial schedule of intercity passenger trains is constructed based on fuzzy sets. Furthermore, a heuristic genetic algorithm is designed to solve the model and the example is proposed to prove the effectiveness of the model and algorithm.
Do You Know where Your Money Is? Product Disclosure Statements for Discretionary Investment Services  [PDF]
Emily Lou
Beijing Law Review (BLR) , 2013, DOI: 10.4236/blr.2013.41006

New Zealand capital markets currently do not serve retail investors well, creating investor skepticism regarding participation. A recent Reader’s Digest survey rated financial advisers among the least trustworthy of professions. This article maps the legal implications of the new measures introduced by the Financial Markets Conduct Bill 2011 to guard investor interests in relation to financial products and services. The paper provides a useful critique of the proposed reforms, in particular, whether the “Product Disclosure Statement” (PDS) and the new licensing of fund managers will give retail investors confidence in investing through financial intermediaries. The paper concluded with recommendation for New Zealand regulator to obtain inspiration from overseas model.

An Empirical Study of Content-Based Instruction Applied in Non-English-Majored Graduate English Teaching in the Post-Massification  [PDF]
Yougen Lou
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.614158
Abstract: In the post-massification period, it is a beneficial attempt to the reform of English Teaching based on subject content for non-English-majored graduate students. Content-Based Instruction (CBI) has been defined as “the teaching of content information in the language being learned with little or no direct or explicit effort to teach the language itself separately from the content being taught”, which can make non-English-majored graduate students not only learn subject knowledge but also improve their foreign language (English) ability in learning content. Results in this study showed that: in the post-massification period, content-based English teaching could improve the level of motivation and English language ability of students in their English learning, but CBI was not suitable for poor English learners with no good foreign language (English) basis.
An Effective Algorithm for Quadratic Optimization with Non-Convex Inhomogeneous Quadratic Constraints  [PDF]
Kaiyao Lou
Advances in Pure Mathematics (APM) , 2017, DOI: 10.4236/apm.2017.74018
Abstract: This paper considers the NP (Non-deterministic Polynomial)-hard problem of finding a minimum value of a quadratic program (QP), subject to m non-convex inhomogeneous quadratic constraints. One effective algorithm is proposed to get a feasible solution based on the optimal solution of its semidefinite programming (SDP) relaxation problem.
A Survey on English Majors’ Dynamic Trends of Dictionaries Using  [PDF]
Xixiang Lou, Liping Li
Open Journal of Modern Linguistics (OJML) , 2012, DOI: 10.4236/ojml.2012.22010
Abstract: English dictionaries are the necessary tools for English learning, because a good dictionary is a stable resource of language knowledge. Proper dictionary using can stimulate students’ interest, and cultivate their self-autonomy in language learning. With the development of dictionary compiling technology, a variety of dictionaries have come into existence. The most-often-used dictionaries are paper dictionaries and electronic ones. It is assumed by some that the habit of dictionary using can influence the efficiency of the students’ language learning. This article reports on a survey of the diachronic trends of English major seniors (415) in their choice of dictionaries in the course of English learning from junior middle school to the college education. The investigation is to get some information about the subjects’ habits in dictionary-using at different stage of schooling
Integrating Internet-Based Language Laboratory in Teaching Intensive Reading at Non-English-Majored-Graduate Level  [PDF]
Yougen Lou, Pei Xu
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.614162
Abstract: This paper reviewed a one-term experiment on integrating internet-based language laboratory (IBLL) in teaching intensive reading to first-year non-English-majored graduate students from Yangtze University. Subjects in this study consisted of 58 non-English-majored graduate students in the control group (CG) and 58 non-English-majored graduate students in the experimental group (EG). The results showed that 1) compared with a teacher-dominated approach for CG, internet-based language laboratory English instruction method for EG did a better job in enhancing students’ productive skills; 2) there were significant differences between males in CG and EG, and females in CG and EG.
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