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Journal of Systems Science & Complexity最新文献

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Study of Pentoxifylline Chemical Stability from Modified Release Tablets with Hydrophilic Mould 亲水发酵剂对己酮茶碱缓释片化学稳定性的研究
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2008-11-08 DOI: 10.1109/CANS.2008.35
E. Mircia, S. Imre, E. Sipos, V. Avrigeanu, A. Popovici, G. Hancu
{"title":"Study of Pentoxifylline Chemical Stability from Modified Release Tablets with Hydrophilic Mould","authors":"E. Mircia, S. Imre, E. Sipos, V. Avrigeanu, A. Popovici, G. Hancu","doi":"10.1109/CANS.2008.35","DOIUrl":"https://doi.org/10.1109/CANS.2008.35","url":null,"abstract":"Thermal and chemical stability of pentoxifylline from modified release tablets were studied. This experimental study observed the influence of temperature and humidity on the stability of pentoxifylline from the proposed formulations. The paper describes the HPLC determination of pentoxifylline from new controlled release tablets with hydrophilic matrix (HPMC, HPC, HEC). A C18 column with a mobile phase containing water : acetonitrile 70:30 (V/V) and UV detection at 280 nm was used. The \"in vitro\" dissolution test was carried out regarding the officinal stipulations of USP; the machine nr.2 was used (with paddles); as dissolution environment 1000 ml water, a constant temperature of 37 plusmn 0.5degC was kept. In all experiences, the rotation speed was 50 rpm. The studied tablets were kept in the stability chamber at a temperature of 40 plusmn 2degC and a relative humidity of 75 plusmn 5%. At different time intervals (a month, three months, six months), samples were prelevated to accomplish the dissolution test and the quantitative determination of pentoxifylline. From the evaluation of the experimental results, we observed the stability of pentoxifylline from all the prepared tablets.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"38 1","pages":"231-242"},"PeriodicalIF":2.1,"publicationDate":"2008-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88276170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Clustering Based on Context Similarity 基于上下文相似度的聚类
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2008-11-08 DOI: 10.1109/CANS.2008.26
L. Kovács, T. Repasi, E. Baksa-Varga, P. Barabas
{"title":"Clustering Based on Context Similarity","authors":"L. Kovács, T. Repasi, E. Baksa-Varga, P. Barabas","doi":"10.1109/CANS.2008.26","DOIUrl":"https://doi.org/10.1109/CANS.2008.26","url":null,"abstract":"The discovery of word categories is an important step in statistical grammar induction systems. Word categories can be considered as clusters containing words with similar grammatical or semantic behavior. Having a metric space of words, the clustering algorithm will place similar words into the same cluster, whereas dissimilar ones are clustered into different groups. In this paper we propose an approximate word clustering method based on context similarity. The context of a word is defined here as the set of sentences containing the word. The similarity of two words is measured with the similarity of the corresponding context sets. For the calculation of the context-based distance of two words, a hierarchical agglomerative clustering algorithm has been developed, and is presented here.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"42 1","pages":"157-165"},"PeriodicalIF":2.1,"publicationDate":"2008-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85434234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Some Improvements of t-Cherry Junction Trees t型樱桃结树的若干改良
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2008-11-08 DOI: 10.1109/CANS.2008.22
E. Kovács, T. Szántai
{"title":"Some Improvements of t-Cherry Junction Trees","authors":"E. Kovács, T. Szántai","doi":"10.1109/CANS.2008.22","DOIUrl":"https://doi.org/10.1109/CANS.2008.22","url":null,"abstract":"One of the important areas of machine learning is the development and use of probabilistic models for classification and prediction. In our earlier work we introduced a special kind of junction tree, based on a hypergraph structure called t-cherry tree and on some information theoretical concepts. In this paper we present a possibility for the improvement of these junction trees, by ldquocutting and refittingrdquo of the junction treepsilas branches. Both theoretical and experimental results demonstrate the improvement of the junction tree obtained after ldquobranch cutting and refittingrdquo.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"88 2 1","pages":"117-125"},"PeriodicalIF":2.1,"publicationDate":"2008-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83615999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Risk Aversion through Fuzzy Numbers 通过模糊数字进行风险规避
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2008-11-08 DOI: 10.1109/CANS.2008.27
I. Georgescu
{"title":"Risk Aversion through Fuzzy Numbers","authors":"I. Georgescu","doi":"10.1109/CANS.2008.27","DOIUrl":"https://doi.org/10.1109/CANS.2008.27","url":null,"abstract":"This paper is concerned with an approach of risk aversion by possibility theory. We introduce and study new possibilistic risk indicators. The main notions are the possibilistic risk premium and the possibilistic relative risk premium associated with a fuzzy number and a utility function. We also give formulae for computing them. They extend to possibility theory the classic notions of risk premium and relative risk premium. We show by an example how the main possibilistic risk indicators are computed using trapezoidal fuzzy numbers.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"1 1","pages":"174-182"},"PeriodicalIF":2.1,"publicationDate":"2008-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81029769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A New Approach for Detecting Intrusions Using Jordan/Elman Neural Networks 基于Jordan/Elman神经网络的入侵检测新方法
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2008-11-08 DOI: 10.1109/CANS.2008.15
H. Karimi, M. A. Montazeri, M. D. Jazi
{"title":"A New Approach for Detecting Intrusions Using Jordan/Elman Neural Networks","authors":"H. Karimi, M. A. Montazeri, M. D. Jazi","doi":"10.1109/CANS.2008.15","DOIUrl":"https://doi.org/10.1109/CANS.2008.15","url":null,"abstract":"Intrusion detection system (IDS) is an effective tool that can help to prevent unauthorized access to network resources. A good intrusion detection system should have higher detection rate and lower false positive. A new classification system using Jordan/Elman (J/L) neural network for ID is proposed to detect intrusions from normal connections with satisfactory detection rate and false positive. Experiments and evaluations were performed with the KDD Cup 99 intrusion detection database. This system yields the same performance level or better as compared to other existing systems. Comparison with other approach based on different evaluation parameters showed that proposed approach has noticeable performance with detection rate 99.594% and false positive 0.406% and can classify the network connections with satisfactory performance.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"78 1","pages":"62-68"},"PeriodicalIF":2.1,"publicationDate":"2008-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83755784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Semantic Web-Based Knowledge Management in Distributed Systems 分布式系统中基于语义的知识管理
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2008-11-08 DOI: 10.1109/CANS.2008.9
S. Buraga
{"title":"Semantic Web-Based Knowledge Management in Distributed Systems","authors":"S. Buraga","doi":"10.1109/CANS.2008.9","DOIUrl":"https://doi.org/10.1109/CANS.2008.9","url":null,"abstract":"A study regarding the use of the semantic Web technologies within complex systems-distributed file systems, grid platforms and wiki-like applications-is presented from the perspective of the knowledge management, especially the modeling of the implicated resources. Several case studies are described, involving the use of actual semantic Web model, languages, and technologies-including microformats and ontologies-to express knowledge in the context of the distributed systems.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"30 1","pages":"11-20"},"PeriodicalIF":2.1,"publicationDate":"2008-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90606100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Modeling of Social Transitions Using Intelligent Systems 使用智能系统的社会转型建模
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2008-10-11 DOI: 10.1109/CANS.2008.8
H. Owladeghaffari, W. Pedrycz, M. Sharifzadeh
{"title":"Modeling of Social Transitions Using Intelligent Systems","authors":"H. Owladeghaffari, W. Pedrycz, M. Sharifzadeh","doi":"10.1109/CANS.2008.8","DOIUrl":"https://doi.org/10.1109/CANS.2008.8","url":null,"abstract":"In this study, we reproduce two new hybrid intelligent systems, involve three prominent intelligent computing and approximate reasoning methods: Self Organizing feature Map (SOM), Neuro-Fuzzy Inference System and Rough Set Theory (RST), called SONFIS and SORST. We show how our algorithms can be construed as a linkage of government-society (or any other similar systems) interactions, where government catches various states of behaviors: ldquosolid (absolute) or flexiblerdquo. So, transition of society, by changing of connectivity parameters (noise) from order to disorder is inferred.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"28 1","pages":"3-10"},"PeriodicalIF":2.1,"publicationDate":"2008-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81039523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Two distinct methods for integration of active differential and active roll control systems 主动差速器和主动横摇控制系统集成的两种不同方法
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2006-07-24 DOI: 10.1504/IJVD.2006.010437
F. Assadian, N. Aneke
{"title":"Two distinct methods for integration of active differential and active roll control systems","authors":"F. Assadian, N. Aneke","doi":"10.1504/IJVD.2006.010437","DOIUrl":"https://doi.org/10.1504/IJVD.2006.010437","url":null,"abstract":"The development and application of mechatronic sub-systems has dramatically increased in the automobile industry during recent years. The implementation of these sub-systems, aboard vehicles, has resulted in an increase in vehicle performance and stability. However, until recently, these sub-systems have been developed for specific objectives without considering the dynamic coupling between these systems. Hence, their potential has not been fully exploited. In this paper, the coupling effect of the active differential and the active roll control systems on the lateral and the yaw rate dynamics of a vehicle are demonstrated by deriving a simple linearised model. Then, two distinct control strategies are proposed for illustrating the benefits of integrating the aforementioned systems. The first control method is based on direct use of an optimisation method for computing optimal mapping of the requested vehicle body forces to the actuator inputs. The second method utilises a MIMO model based control methodology. The advantages and the drawbacks of each control strategy are discussed and the simulation results are presented.","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"1 1","pages":"97-118"},"PeriodicalIF":2.1,"publicationDate":"2006-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83486867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Toward an Enlargement of the Role of Natural Languages in Information Processing, Decision and Control 论自然语言在信息处理、决策和控制中的作用
IF 2.1 3区 数学
Journal of Systems Science & Complexity Pub Date : 2000-01-01 DOI: 10.1007/978-3-7908-1844-4_14
L. Zadeh
{"title":"Toward an Enlargement of the Role of Natural Languages in Information Processing, Decision and Control","authors":"L. Zadeh","doi":"10.1007/978-3-7908-1844-4_14","DOIUrl":"https://doi.org/10.1007/978-3-7908-1844-4_14","url":null,"abstract":"","PeriodicalId":50026,"journal":{"name":"Journal of Systems Science & Complexity","volume":"1 1","pages":"81-82"},"PeriodicalIF":2.1,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87355340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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