H. A. Ahmed, P. Mahanta, D. Bhattacharyya, J. Kalita
{"title":"GERC: Tree Based Clustering for Gene Expression Data","authors":"H. A. Ahmed, P. Mahanta, D. Bhattacharyya, J. Kalita","doi":"10.1109/BIBE.2011.54","DOIUrl":"https://doi.org/10.1109/BIBE.2011.54","url":null,"abstract":"Measurement of gene expression using DNA micro arrays have revolutionized biological and medical research. This paper presents a divisive clustering algorithm that produces a tree of genes called GERC tree along with the generated clusters. Unlike a dendrogram, a GERC tree is a general tree and it is an ample resource for biological information about the genes in a data set. The leaves of the tree represent the desired clusters. The clustering method was tested with several real-life data sets and the proposed method has been found satisfactory.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128883629","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":"Constructing Suffix Tree of Endogenous Feature on FPGA for High-Performance Identification of DNA Signatures","authors":"Lin Feng, Angela Jean, C. Leng, Lai Danbo","doi":"10.1109/BIBE.2011.48","DOIUrl":"https://doi.org/10.1109/BIBE.2011.48","url":null,"abstract":"Identification of DNA signatures is an important application which has been empowered by the increasing availability of thousands of bacterial and viral genomes through the next-generation sequencing (NGS) technologies. It is computationally challenging. In exploration for the solution, the suffix tree has been proposed as a data structure well suited to analyzing genomic sequences because it enables the storage of long strings in a logical, indexed manner for fast retrieval. We propose a new algorithm for identification of DNA signatures, based on exploitation of the endogenous features of a genomic sequence. These features are revealed in a construction of suffix array (an implementation of the generalized suffix tree). Furthermore, to greatly speed up the time-consuming process, the core algorithm is mapped and routed on to a Field-Programable Gate Array (FPGA) for parallel implementation. In this paper, we will focus primarily on the relationship of the data structure and the features associated. We will then describe the deployment of the hybrid computing system on a Hyper Transport compliant architecture. Illustrations are always given to clarify the technical details.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126405575","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 Development of Foot Orthotics Using Shape Memory Alloy for Preventing Falls","authors":"Yuki Shimizu, M. Kobayashi","doi":"10.1109/BIBE.2011.25","DOIUrl":"https://doi.org/10.1109/BIBE.2011.25","url":null,"abstract":"Plantar arch has been considered to be important function in walking and to control the body balance. Many of elderly lose this function, tend to fall which to lost activities of daily life. Therefore we attempt to develop the foot orthotics for preventing falls using hyper elasticity with shape memory alloy (SMA). To evaluate orthotics function, the single-leg standing testing with eyes open using subjects was done. Measuring standing time, maximum amplitude of body, moving area of centroid were measured using video recording and stabilograph. Meanwhile, pinch force of toe was measured to ascertain whether flatfoot was reproduced by orthotics, because the study was reported that plantar muscle was weakened with aged. Test results showed that all date of orthotics was superior to flatfoot model. Although no significant difference was showed by test results in this study, this orthotics with SMA could be expected to be effective for falls prevention.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132756857","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}
Hatim Aboalsamh, Hind Al Hashim, Faten Alrashed, Nada Alkhamis
{"title":"Virtual Reality System Specifications for Pain Management Therapy","authors":"Hatim Aboalsamh, Hind Al Hashim, Faten Alrashed, Nada Alkhamis","doi":"10.1109/BIBE.2011.69","DOIUrl":"https://doi.org/10.1109/BIBE.2011.69","url":null,"abstract":"Virtual Reality (VR) systems are used to distract patients from their current condition and immerse them in a virtual world where they are able to do many virtual activities while receiving their treatment. It was observed that VR systems improve the patent state of mind thereby improving their immune system. In this paper we study the role of VR in improving pain threshold for chemotherapy and burn patients. Unfortunately not all patients are able to use VR equipments, for example burn patents are unable to use VR head mounts and gloves. To design a VR software and hardware that could be used for every patent is close to impossible. In this paper we introduce the benefits and challenges of using VR systems as an added therapy to reduce pain sensation; we also give the general technical requirements for such system. Keywordspain management; complementary therapy. virtual reality;","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133624575","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}
Fahim Mohammad, R. Flight, Benjamin J. Harrison, J. Petruska, E. Rouchka
{"title":"A Heuristic Algorithm for Detecting Intercellular Interactions","authors":"Fahim Mohammad, R. Flight, Benjamin J. Harrison, J. Petruska, E. Rouchka","doi":"10.1109/BIBE.2011.9","DOIUrl":"https://doi.org/10.1109/BIBE.2011.9","url":null,"abstract":"Existing analytical tools enable broad-scale experimentation (\"-omics\") to provide a great deal of information about intracellular processes. However, extraction of information regarding intercellular interactions, particularly from separate datasets, is generally more limited, principally for lack of specialized analytical tools. In turn, few experiments are designed to examine intercellular interactions. Using the large number of previously identified interactions available in databases may provide a useful platform for analyzing these interactions. However, finding all possible interactions is a computationally intensive task and quickly becomes intractable using a naive approach on networks with hundreds of thousands of nodes and edges. A heuristic algorithm similar to the \"Backtracking algorithm\" is proposed to find all possible protein interactions across any two gene sets. The algorithm starts with an initial set of genes and incrementally adds a candidate to the interaction network and abandons each candidate x as soon as it is determined that x does not lead to a valid solution. An exclusion vector (EV) is used to accomplish this task and is populated at each step, maintaining a list of those nodes that need to be excluded from interactions in the future and thus restricting the size of the network. The EV also allows location awareness by using Gene Ontology (GO) cell component classifications to discard nodes that are not relevant for the network. This algorithm can be readily applied to pathway analysis and the determination of elements underlying intercellular interactions.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121307063","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":"A Novel Recursive Feature Subset Selection Algorithm","authors":"A. Jafarian, A. Ngom, L. Rueda","doi":"10.1109/BIBE.2011.19","DOIUrl":"https://doi.org/10.1109/BIBE.2011.19","url":null,"abstract":"Univariate filter methods, which rank single genes according to how well they each separate the classes, are widely used for gene ranking in the field of microarray analysis of gene expression datasets. These methods rank all of the genes by considering all of the samples; however some of these samples may never be classified correctly by adding new genes and these methods keep adding redundant genes covering only some parts of the space and finally the returned subset of genes may never cover the space perfectly. In this paper we introduce a new gene subset selection approach which aims to add genes covering the space which has not been covered by already selected genes in a recursive fashion. Our approach leads to significant improvement on many different benchmark datasets. Keywords-gene selection; filter methods; gene expression; microarray; ranking functions.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126065352","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}
Fahim Mohammad, R. Flight, Benjamin J. Harrison, J. Petruska, E. Rouchka
{"title":"Interval Trees for Detection of Overlapping Genetic Entities","authors":"Fahim Mohammad, R. Flight, Benjamin J. Harrison, J. Petruska, E. Rouchka","doi":"10.1109/BIBE.2011.49","DOIUrl":"https://doi.org/10.1109/BIBE.2011.49","url":null,"abstract":"A variety of systems exist in which annotations are available at various levels of granularity to a reference coordinate system, such as roads and landmarks on a map, features within a 2-dimensional or 3-dimensional image, or genetic entities (GEs) mapped to a reference genome. As the number of annotations grows, methods to efficiently locate overlapping entities within a specific interval of interest are needed. In this paper, the efficiency of using interval trees for storing, maintaining, and querying large numbers of intervals with special attention to genetic entities is demonstrated. The results suggest a significant speed -- up when compared to relational database approaches. As such, interval trees serve as a suitable alternative for storing and searching annotations to a reference coordinate system.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125032978","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":"Photoelectric DNA-Detection Platform with Assembled Magnetic Beads","authors":"Fei Li, Jin Xu","doi":"10.1109/BIBE.2011.44","DOIUrl":"https://doi.org/10.1109/BIBE.2011.44","url":null,"abstract":"In this work, we propose a DNA hybridization detection platform with assembled magnetic beads and integrated photodiodes on a silicon chip. DNA targets labeled magnetic beads generate an opaque area after hybridization, and the fabricated photodiode is utilized to turn ordinary light into electricity. Compared with the detected photocurrent before hybridization, the signal of DNA hybridization can be distinctly diagnosed by the light intensity changing. As far as we know, it is the first time to assemble magnetic beads with integrated photodiode on a silicon chip to detect DNA hybridization. The advantages of this detection platform are lower cost, higher precision and less time consuming. With this technique, we could successfully discriminate single base mismatched DNA from perfectly matched DNA sequence, which saves the time of amplifying hybridization signal. This detection platform also fits for DNA computing because magnetic property could easily eliminate unfeasible solutions of problem. The experimental result of a minimum vertex cover problem, which is solved by DNA computing on this platform, reveals the obvious benefits of this detection platform and its potential to be used to construct a fully automatic DNA computer with photoelectric readout.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125805678","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":"Reconstruction of Histone Modification Network from Next-generation Sequencing Data","authors":"Ngoc Tu Le, T. Ho","doi":"10.1109/BIBE.2011.35","DOIUrl":"https://doi.org/10.1109/BIBE.2011.35","url":null,"abstract":"Post-translational modifications (PTMs) of his tone proteins play critical roles in establishing functionally separated domains on chromatin and regulating important biological processes, such as transcription. These modifications often act in cooperative manner, forming complicated \"histone codes\". Elucidation of functional relationships among them will, therefore, significantly increase our understanding of cell differentiation, development, and cancer pathogenesis. Biological evidence has shown that nucleosome positioning can provide invaluable information about interactive effects of PTMs. However, to our knowledge, none of previous works has exploited this information in the reconstruction of his tone modification networks. We propose a computational approach based on Bayesian network to reconstruct a network representing functional relationships of his tone modifications. Our approach employed the search-and-score method to infer the network structure using interactive information of his tone modifications, which is measured by the correlation between each modification with nucleosome positioning. When applied on human CD4+ T cell ChIP-Seq dataset, containing 38 different his tone modifications and binding information of three other proteins, H2A.Z, PolII and CTCF, our method not only outperformed previous approaches in recovering known relationships but also suggested many new ones, confirming its validity and efficiency. Our unbiased method for inferring the network structure can also be applied to reconstruct interaction networks of other epigenetic factors.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131257401","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":"Ergonomic Designs Based on Musculoskeletal Models","authors":"Chun-Ming Chang, J. Tsai","doi":"10.1109/BIBE.2011.24","DOIUrl":"https://doi.org/10.1109/BIBE.2011.24","url":null,"abstract":"A framework to adjust sitting postures based on musculoskeletal models is presented in this paper. After the analysis of muscles and strength, some “comfortable†postures are specified as candidate postures. An optimization algorithm is then applied to choose from these candidates, according to current conditions of muscles and the durations one needs, and form a sequence of ordered postures for the sitters. The sitters shift the postures dynamically before they feel uncomfortable, therefore they can maintain a seated posture for extended durations. The ergonomists can also benefit from the information of intermittent postures and use it as a guideline for a new chair/desk design.","PeriodicalId":391184,"journal":{"name":"2011 IEEE 11th International Conference on Bioinformatics and Bioengineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130677868","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}