{"title":"Inferring Causal Relations from Multivariate Time Series: A Fast Method for Large-Scale Gene Expression Data","authors":"Yinyin Yuan, Chang-Tsun Li","doi":"10.1109/BIBE.2009.8","DOIUrl":"https://doi.org/10.1109/BIBE.2009.8","url":null,"abstract":"Various multivariate time series analysis techniques have been developed with the aim of inferring causal relations between time series. Previously, these techniques have proved their effectiveness on economic and neurophysiological data,which normally consist of hundreds of samples. However, in their applications to gene regulatory inference, the small sample size of gene expression time series poses an obstacle. In this paper, we describe some of the most commonly used multivariate inference techniques and show the potential challenge related to gene expression analysis. In response, we propose a directed partial correlation (DPC) algorithm as an ef¿cient and effective solution to causal/regulatory relations inference on small sample gene expression data. Comparative evaluations on the existing techniques and the proposed method are presented. To draw reliable conclusions, a comprehensive benchmarking on data sets of various setups is essential. Three experiments are designed to assess these methods in a coherent manner. Detailed analysis of experimental results not only reveals good accuracy of the proposed DPC method in large-scale prediction, but also gives much insight into all methods under evaluation.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117180693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Po-Yuan Chen, Mien-De Jhuo, W. Hsu, T. Shih, Tzu-Hurng Cheng
{"title":"The MAPK Signal Pathway Research and New Drug Discovery","authors":"Po-Yuan Chen, Mien-De Jhuo, W. Hsu, T. Shih, Tzu-Hurng Cheng","doi":"10.1109/BIBE.2009.80","DOIUrl":"https://doi.org/10.1109/BIBE.2009.80","url":null,"abstract":"MAPK cell signal transduction pathways determine the survival of the cells. If one can control this pathways, and then they will prohibit the proliferation of the cancer cells. Furthermore, they will heal the cancer smoothly. In order to attain this goal, we use lots of drugs to interact with MEK1 in MAPK, by using computer aided drug design to analyze the ligand activity of proteins in MEK1.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"736 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122947903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficiency Enhancement of Protein Folding for Complete Molecular Simulation via Hardware Computing","authors":"Wen-Tsai Sung","doi":"10.1109/BIBE.2009.46","DOIUrl":"https://doi.org/10.1109/BIBE.2009.46","url":null,"abstract":"Accelerating a protein folding by implementing it in a reconfigurable field programmable gate array (FPGA) is described. This paper presents a methodology for the design of a reconfigurable computing system applied to a complex problem in molecular biology: the protein folding problem. This paper employed VMD tool and force field simulation theorem based on FPGA for protein folding solution. This technique consists of two components: finished protein folding process and found out active sites for drug docking. The goal of protein folding simulation is to search the global energy minimum location with stability state and the when the protein is finished the folding task, we can find out the active sites for pre-process of ligand protein docking. An efficient hardware-based approach was devised to achieve a significant reduction of the search space of possible foldings. Several simulations were done to evaluate the performance of the system as well as the demand for FPGA’s resources.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130741808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Phylogenetic Analysis Using Nuclear-Encoded Mitochondrial Proteins","authors":"Alan Chen, H. Hsiao, J. Tsai","doi":"10.1109/BIBE.2009.66","DOIUrl":"https://doi.org/10.1109/BIBE.2009.66","url":null,"abstract":"Mitochondria have been known as power sources for energy transduction in eukaryotic cells. Hence, mitochondrial genomes and proteins have been used widely for phylogenetic analysis. However, nuclear-encoded mitochondrial proteins are considered in this study to construct phylogenetic relationship among species. An intuitive yet effective and efficient approach to solving relative positions of species is proposed. The derived phylogenetic map demonstrates a satisfactory result, and may indicate an alternative way for phylogenetic analysis. A more complete data set is nevertheless a need.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128954718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Wedjat: A Mobile Phone Based Medicine In-take Reminder and Monitor","authors":"Mei-Ying Wang, P. Tsai, J. W. Liu, J. Zao","doi":"10.1109/BIBE.2009.60","DOIUrl":"https://doi.org/10.1109/BIBE.2009.60","url":null,"abstract":"Out-patient medication administration has been identified as the most error-prone procedure in modern health¬care. Under or over doses due to erratic in-takes, drug-drug or drug-food interactions caused by un-reconciled prescriptions and the absence of in-take enforcement and monitoring mechanisms have caused medication errors to become the common cases of all medical errors. Most medication administration errors were made when patients bought different prescribed and over-the-counter medicines from several drug stores and use them at home without little or no guidance. Elderly or chronically ill patients are particularly susceptible to these mistakes. In this paper, we introduce Wedjat, a smart phone application designed to help patients avoiding these mistakes. Wedjat can remind its users to take the correct medicines on time and record the in-take schedules for later review by healthcare professionals. Wedjat has two distinguished features: (1) it can alert the patients about potential drug-drug/drug-food interactions and plan a proper in-take schedule to avoid these interactions; (2) it can revise the in-take schedule automatically when a dose was missed. In both cases, the software always tries to produce the simplest schedule with least number of in-takes. Wedjat is equipped with user friendly interfaces to help its users to recognize the proper medicines and obtain the correct instructions of taking these drugs. It can maintain the medicine in-take records on board, synchronize them with a data¬base on a host machine or upload them onto a Personal Heath Record (PHR) system. A proof-of-concept prototype of Wedjat has been implemented on Window Mobile platform and will be migrated onto Android for Google Phones. This paper introduces the system concept and design principles of Wedjat with emphasis on its medication scheduling algorithms and the modular implementation of mobile computing application.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116721968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rao M. Kotamarti, Douglas W. Raiford, M. Raymer, M. Dunham
{"title":"A Data Mining Approach to Predicting Phylum for Microbial Organisms Using Genome-Wide Sequence Data","authors":"Rao M. Kotamarti, Douglas W. Raiford, M. Raymer, M. Dunham","doi":"10.1109/BIBE.2009.14","DOIUrl":"https://doi.org/10.1109/BIBE.2009.14","url":null,"abstract":"Genomic sequencing projects are generating vast stores of data that provide opportunities and challenges in data analysis. Investigations of trends in codon usage have proven to be a rich area of study in this field. There are a number of methods for isolating codon usage bias in microbial organisms, each designed to capture a specific aspect of the bias. We posit that each species has evolved under the influence of a unique set of environmental constraints that has governed the shaping of the organism's codon usage. Analysis of codon usage data should, therefore, provide insights into the selection process at work influencing genomic composition. To this end, we describe the large-scale mining of genome-level data from several codon usage bias isolation techniques to determine whether this information can be used to predict the phylum and class to which each organism belongs. Successful prediction is an indication that the forces molding the codon usage of a given phylum/class are indeed distinctive, and that it would be of use in understanding the evolutionary forces involved. Additionally, it supports using this method to aid in, and validate existing taxonomic classification techniques.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117115848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Beamformer-Based Spatiotemporal Imaging of Correlated Brain Activities","authors":"I. Chen, Yong-Sheng Chen, Li-Fen Chen","doi":"10.1109/BIBE.2009.67","DOIUrl":"https://doi.org/10.1109/BIBE.2009.67","url":null,"abstract":"The past findings have suggested that temporal correlation may relate the communications between the distributed areas. There are some studies in Magnetoencephalography and electroencephalography to analyze the functional connectivity between cortical areas with the oscillations feature of neuronal activity. However, it is also important to observe the functional connectivity through temporal correlation between cortical areas. We proposed a beamformer-based approach which exploits a maximum correlation criterion to maximize the significance level of correlation between brain activities. This criterion leads to a closed-form solution of the dipole orientation. Experiments with simulation data clearly demonstrate the effectiveness, necessity, and accuracy of the proposed method.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115806920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Optimization of Monascus Fermentation Process for Pigments Increment and Citrinin Reduction","authors":"C. Chung, Tzou-Chi Huang, Ho‐Hsien Chen","doi":"10.1109/BIBE.2009.33","DOIUrl":"https://doi.org/10.1109/BIBE.2009.33","url":null,"abstract":"The species of the fungus (Monascus purpureus, NPUST, Taiwan) used to produce the high pigment was isolated from rice waste. Its genomic DNA was confirmed by examining the NCBI database to check this species is M. purpureus strain ATCC 36114 (Identity 100%, Gap 0%). In this study, Taguchi Method was applied to find the optimal conditions of medium composition to enhance the production of pigments synthesis, and to reduce the yield of citrinin, metabolites in the M. purpureus fermentation process. In the production of the yellow pigment (OD400) and the red pigment (OD500), the result showed that their optimal conditions were A2B3C3D4E4 (1% Japonica-type rice, 1% peptone, 0.01% glycerol, 0.01% potassium phosphate and pH 9). In the production of the orange pigment (OD460), the result showed that the optimal conditions were A2B3C3D1E4 (1% Japonica-type rice, 1% peptone, 0.01% glycerol, 0.01% magnesium sulfate and pH 9). Under the optimal conditions for the best yield of pigment synthesis, the result showed that yellow pigment was 4.132 ppm, red pigment was 8.480 ppm and the orange pigment was 4.573 ppm. In the reduction of the citrinin yield, the result showed that A4B1C1D3E1 (1% whole wheat flour, 1% gelatin, 0.01% olive oil, 0.01% sodium choride and pH 3) were optimal conditions inhibit citrinin metabolism. Citrinin was reduced to 0.055 ppb. The optimal combination obtained from this study could be a reference for production line Monascus fermentation processing.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133083700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integration of Heterogeneous Medical Decision Support Systems Based on Web Services","authors":"Chung C. Chang, Hsueh-Ming Lu","doi":"10.1109/BIBE.2009.59","DOIUrl":"https://doi.org/10.1109/BIBE.2009.59","url":null,"abstract":"This study employs the framework of web services in conjunction with Bayesian theorem and decision trees to construct a web-services-based decision support system for medical diagnosis and treatment. The purpose is to help users (physicians) with issues pertinent to medical diagnosis and treatment decisions. Users through the system key in available prior probability and through computation based on Bayesian theorem obtain the diagnosis. The process helps users enhance the quality and efficiency of medical decisions, and the diagnosis can be transmitted to a decision-tree-based treatment decision support service component via XML to generate recommendation and analysis for treatment decisions. On the other hand, features of web services enable this medical decision support system to offer more service platforms than conventional one. Users will have access to the system whether they use Windows, Macintosh, Linux or any other platforms that connect with the Internet via HTTP. More important is the fact that after the system is completed all Internet service providers will be able to access the system as a software unit freely and quickly. This way, the goal of this study to provide medical decision support tools and speedily integrate heterogeneous medical decision support systems can be effectively attained.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114966026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dariusz Mrozek, Bożena Małysiak-Mrozek, S. Kozielski, A. Świerniak
{"title":"The Energy Distribution Data Bank: Collecting Energy Features of Protein Molecular Structures","authors":"Dariusz Mrozek, Bożena Małysiak-Mrozek, S. Kozielski, A. Świerniak","doi":"10.1109/BIBE.2009.40","DOIUrl":"https://doi.org/10.1109/BIBE.2009.40","url":null,"abstract":"The analysis of structural and energy features of proteins can be a key to understand how proteins work and interact to each other in cellular reactions. Potential energy is a function of atomic positions in a protein structure. The distributions of energy over each atom in protein structures can be very supportive for the studies of the complex processes proteins are involved in. Energy profiles contain distributions of different potential energies in protein molecular structures. Therefore, they constitute a full descriptor of energy properties for protein structures. The Energy Distribution Data Bank (EDB, http://edb.aei.polsl.pl) stores energy profiles for protein molecular structures retrieved from the well-known Protein Data Bank. In the paper, we describe the purpose of the EDB, a possible use of the information stored in it, query possibilities, and plans for future development.","PeriodicalId":162768,"journal":{"name":"2009 Ninth IEEE International Conference on Bioinformatics and BioEngineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114462827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}