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Search Results: 1 - 10 of 109074 matches for " Ge Zhang "
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Dynamic Pricing of Perishable Products under Consumer Factor  [PDF]
Yanming Ge, Jianxin Zhang
Journal of Service Science and Management (JSSM) , 2011, DOI: 10.4236/jssm.2011.44049
Abstract: With effect of consumer factor considered, a model for dynamic pricing of perishable products is proposed. By this model, we obtained a property of the value function: marginal value is a decreasing function of the capacity and an increasing function of the consumer factor. Basing on this property, we proposed the following pricing strategy: according to the regions that the perishable products are sold, we adopt the appropriate consumer factor and then use the routine pricing strategy. This strategy not only maximizes the retailer’s revenue but also improves its service level. Lastly, a constructive example is discussed.
Personalized Tag Recommendation Based on Transfer Matrix and Collaborative Filtering  [PDF]
Shaowu Zhang, Yanyan Ge
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.39002
Abstract: In social tagging systems, users are allowed to label resources with tags, and thus the system builds a personalized tag vocabulary for every user based on their distinct preferences. In order to make the best of the personalized characteristic of users’ tagging behavior, firstly the transfer matrix is used in this paper, and the tag distributions of query resources are mapped to users’ query before the recommendation. Meanwhile, we find that only considering the user’s preference model, the method cannot recommend new tags for users. So we utilize the thought of collaborative filtering, and produce the recommend tags based on the query user and his/her nearest neighbors' preference models. The experiments conducted on the Delicious corpus show that our method combining transfer matrix with collaborative filtering produces better recommendation results.
The Application of Peter Newmark’s Theory in Translating the Public Signs in the Scenic Spots
Canadian Social Science , 2012, DOI: 10.3968/j.css.1923669720120804.1185
Abstract: This paper mainly focuses on the research of Peter Newmark’s theory, namely the communicative approach and the semantic approach in translating the public signs in the scenic spots. Public signs were collected around the West Lake. Then I classify the public signs to which approach could apply. Under the principle of either approach, through the careful study of the public signs, I re-translate these public signs. The classification would increase the feasibility of the translation. In the process of translation, some problems are founded, such as spelling mistakes. The two theories have their advantages, so we can combine them when we put them into practice. Key words: Communicative approach; Semantic approach; Public signs; Classification
A Slacks-based Measure of Efficiency of Electric Arc Furnace Activity with Undesirable Outputs  [PDF]
Hao Zhang, Xiang Su, Shilun Ge
Journal of Service Science and Management (JSSM) , 2011, DOI: 10.4236/jssm.2011.42027
Abstract: Efficiency reflects a scenario of higher quality product with fewer resource inputs and less pollution discharge. In terms of a manufacturing firm, it means a win-win strategy in both economic and environmental categories. The paper ex-tends the Electric Arc Furnace (EAF) activity management by taking pollution discharge as undesirable outpust. After reviewing relative undesirable outputs DEA literatures and comparing their advantages and shortcomings, the current paper introduces SBM models to treat undesirable outputs and then measures the efficiency of each EAF activity. Based on resources input and activity quantity output and undesirable outputs, the DEA model can evaluate the efficiency of EAF activity. By the input-output combination, the sensitivity analysis is done. At last, the paper demonstrates the ap-plication of efficiency measurement in EAF activity of an iron&steel enterprise. The result implies objectivity, accuracy and practicability of the activity analysis and valuation method based on SBM-Undesirable model.
A First Comparison of Simultaneous Sea Level Measurements from Envisat, GFO, Jason-1, and TOPEX/Poseidon
Caiyun Zhang,Ge Chen
Sensors , 2006, DOI: 10.3390/s6030235
Abstract: The multiple altimeter missions have not only advanced our knowledge of oceancirculation, ice sheet topography, and global climate, but also improved the accuracy ofaltimetric measurements by cross-calibration and validation. In this paper, one year’ssimultaneous maps of sea level anomaly (MSLA) data obtained from four altimeters,Envisat, Geosat Follow-On (GFO), Jason-1, and TOPEX/Poseidon (T/P), have beencompiled for a preliminary comparison. First, the discrepancy in global geographicaldistribution of each product relative to the merged MSLA field is analyzed and its signalretrieval capability is discussed. Second, the space/time variability of each discrepancy inthe Atlantic Ocean, Indian Ocean, Pacific Ocean, Northern Hemisphere, SouthernHemisphere, and global ocean is studied. Third, each discrepancy as a function of latitude,longitude, and merged MSLA is presented. The results show that Jason-1 is the best single-mission for mapping large scale sea level variation, while T/P in its new orbit presents thepoorest estimation of SLA due to the short period (from cycle 369 to 403) used to determinethe mean profile. A clear understanding of each product discrepancy is necessary for ameaningful combination or merging of multi-altimeter data, optimal product selection, aswell as for their assimilation into numerical models.
Prediction of xylanase optimal temperature by support vector regression
Zhang,Guangya; Ge,Huihua;
Electronic Journal of Biotechnology , 2012,
Abstract: background: support vector machine (svm), a novel powerful machine learning technology, was used to develop the non-linear quantitative structure-property relationship (qspr) model of the g/11 xylanase based on the amino acid composition. the uniform design (ud) method was applied to optimize the running parameters of svm for the first time. results: results showed that the predicted optimum temperature of leave-one-out (loo) cross-validation fitted the experimental optimum temperature very well, when the running parameter c, ξ, and γ was 50, 0.001 and 1.5, respectively. the average root-mean-square errors (rmse) of the loo cross-validation were 9.53oc, while the rmse of the back propagation neural network (bpnn), was 11.55oc. the predictive ability of svm is a minor improvement over bpnn, but it is superior to the reported method based on stepwise regression. two experimental examples proved the validation of the model for predicting the optimal temperature of xylanase. conclusion: the results indicated that ud might be an effective method to optimize the parameters of svm, which could be used as an alternative powerful modeling tool for qspr studies of xylanase.
Implementation Performance Evaluation on Land Use Planning: A Case of Chengdu, China
Cross-Cultural Communication , 2012, DOI: 10.3968/2699
Abstract: This paper aims at evaluating implementation performance of land use planning of Chengdu city from economy, efficiency, effectiveness and equity perspectives. The results shows that that over the period of 1997-2006,the land use planning of Chengdu city achieves a better implementation performance in economy, efficiency and effectiveness fields but in the equity fields is not so good. Then the paper proposes some policy recommendations to improve the land use planning. Key words: Land use planning; Implementation performance evaluation; Chengdu city
Existence of Positive Solutions for a Class of m-Point Boundary Value Problems
Xuemei Zhang,Weigao Ge
Advances in Difference Equations , 2008, DOI: 10.1155/2008/845121
Abstract: This paper investigates the existence of positive solutions for a class of second-order singular m-point Sturm-Liouville-type boundary value problems by using fixed point theorem in cones. The results significantly extend and improve many known results even for nonsingular cases.
Existence of Positive Solutions for a Class of -Point Boundary Value Problems
Zhang Xuemei,Ge Weigao
Advances in Difference Equations , 2008,
Abstract: This paper investigates the existence of positive solutions for a class of second-order singular -point Sturm-Liouville-type boundary value problems by using fixed point theorem in cones. The results significantly extend and improve many known results even for nonsingular cases.
Analysis of Shelley’s Poetry from the perspective of foregrounding
Ge ZHANG,Ruopeng CUI
Canadian Social Science , 2012, DOI: 10.3968/j.css.1923669720120802.2461
Abstract: This paper explores Shelly’s poetry Ode to the West Wind from the perspective of foregrounding. Through the framework of the new model, it fi nds out that the poetry involves various kinds of foregrounding. For this, the poetry can be more understandable. From the analysis of deviation and overregularity, the deviation involves many kinds and the overregularity involves many kinds, either. Through these foregrounding, we analyze them with the social context. Therefore we can relatively be objective about the poem through the study of analysis. Key words: The model; Ode to the West Wind; Analysis of the poetry Résumé Cet article explore la poésie Ode Shelly au vent d’ouest dans la perspective de mise en avant. Grace au cadre du nouveau modèle, il découvre que la poésie implique différents types de mise en avant. Pour cela, la poésie peut être plus compréhensible. De l’analyse de l’écart et overregularity, l’écart implique de nombreux types et le overregularity implique de nombreux types, que ce soit. Grace à ces mise en avant, nous les analysons avec le contexte social. Par conséquent, nous pouvons relativement être objectif à propos du poème à travers l’étude de l’analyse. Mots clés: Le modèle; D’Ode pour; L'analyse de la poésie du vent d’ouest
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