TY - JOUR TI - The Imprecise Dirichlet Model for Multilevel System Reliability AU - Wilson, Alyson G. AU - Huzurbazar, Aparna V. AU - Sentz, Kari T2 - Journal of Statistical Theory and Practice DA - 2009/3// PY - 2009/3// DO - 10.1080/15598608.2009.10411921 VL - 3 IS - 1 SP - 211-223 J2 - Journal of Statistical Theory and Practice LA - en OP - SN - 1559-8608 1559-8616 UR - http://dx.doi.org/10.1080/15598608.2009.10411921 DB - Crossref KW - Fault tree KW - Bayesian network KW - Multilevel data KW - Reliability KW - Multinomial-Dirichlet model KW - Imprecise Dirichlet model ER - TY - JOUR TI - Investigating the role of student motivation in computer science education through one-on-one tutoring AU - Boyer, Kristy Elizabeth AU - Phillips, Robert AU - Wallis, Michael D. AU - Vouk, Mladen A. AU - Lester, James C. T2 - Computer Science Education AB - The majority of computer science education research to date has focused on purely cognitive student outcomes. Understanding the motivational states experienced by students may enhance our understanding of the computer science learning process, and may reveal important instructional interventions that could benefit student engagement and retention. This article investigates issues of student motivation as they arise during one-on-one human tutoring in introductory computer science. The findings suggest that the choices made during instructional discourse are associated with cognitive and motivational outcomes, and that particular strategies can be leveraged based on an understanding of the student motivational state. DA - 2009/6// PY - 2009/6// DO - 10.1080/08993400902937584 VL - 19 IS - 2 SP - 111-135 J2 - Computer Science Education LA - en OP - SN - 0899-3408 1744-5175 UR - http://dx.doi.org/10.1080/08993400902937584 DB - Crossref KW - motivation KW - tutoring KW - confidence KW - CS1 KW - introductory programming KW - initiative ER - TY - CHAP TI - Tracking Files in the Kepler Provenance Framework AU - Mouallem, Pierre AU - Barreto, Roselyne AU - Klasky, Scott AU - Podhorszki, Norbert AU - Vouk, Mladen T2 - Lecture Notes in Computer Science PY - 2009/// DO - 10.1007/978-3-642-02279-1_21 SP - 273-282 OP - PB - Springer Berlin Heidelberg SN - 9783642022784 9783642022791 UR - http://dx.doi.org/10.1007/978-3-642-02279-1_21 DB - Crossref ER - TY - JOUR TI - Response to Ezell and von Winterfeldt AU - Parnell, G.S. AU - Borio, L.L. AU - Cox, L.A. AU - Brown, G.G. AU - Pollock, S. AU - Wilson, A.G. T2 - Biosecurity and Bioterrorism AB - Biosecurity and Bioterrorism: Biodefense Strategy, Practice, and ScienceVol. 7, No. 1 CommentaryResponse to Ezell and von WinterfeldtGregory S. Parnell, Luciana L. Borio, Louis A. (Tony) Cox, Gerald G. Brown, Stephen Pollock, and Alyson G. WilsonGregory S. ParnellSearch for more papers by this author, Luciana L. BorioSearch for more papers by this author, Louis A. (Tony) CoxSearch for more papers by this author, Gerald G. BrownSearch for more papers by this author, Stephen PollockSearch for more papers by this author, and Alyson G. WilsonSearch for more papers by this authorPublished Online:20 Apr 2009https://doi.org/10.1089/bsp.2009.0927AboutSectionsPDF/EPUB Permissions & CitationsPermissionsDownload CitationsTrack CitationsAdd to favorites Back To Publication ShareShare onFacebookTwitterLinked InRedditEmail "Response to Ezell and von Winterfeldt." , 7(1), pp. 111–112FiguresReferencesRelatedDetailsCited byIs ALARP applicable to the management of terrorist risks?Reliability Engineering & System Safety, Vol. 95, No. 8 Volume 7Issue 1Mar 2009 InformationMary Ann Liebert, Inc.To cite this article:Gregory S. Parnell, Luciana L. Borio, Louis A. (Tony) Cox, Gerald G. Brown, Stephen Pollock, and Alyson G. Wilson.Response to Ezell and von Winterfeldt.Biosecurity and Bioterrorism: Biodefense Strategy, Practice, and Science.Mar 2009.111-112.http://doi.org/10.1089/bsp.2009.0927Published in Volume: 7 Issue 1: April 20, 2009PDF download DA - 2009/// PY - 2009/// DO - 10.1089/bsp.2009.0927 VL - 7 IS - 1 SP - 111-112 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-65349093369&partnerID=MN8TOARS ER - TY - JOUR TI - Probability, chance and the probability of chance AU - Singpurwalla, N.D. AU - Wilson, A.G. T2 - IIE Transactions (Institute of Industrial Engineers) AB - In our day-to-day discourse on uncertainty, words like belief, chance, plausible, likelihood and probability are commonly encountered. Often, these words are used interchangeably, because they are intended to encapsulate some loosely articulated notions about the unknowns. The purpose of this paper is to propose a framework that is able to show how each of these terms can be made precise, so that each reflects a distinct meaning. To construct our framework, we use a basic scenario upon which caveats are introduced. Each caveat motivates us to bring in one or more of the above notions. The scenario considered here is very basic; it arises in both the biomedical context of survival analysis and the industrial context of engineering reliability. This paper is expository and much of what is said here has been said before. However, the manner in which we introduce the material via a hierarchy of caveats that could arise in practice, namely our proposed framework, is the novel aspect of this paper. To appreciate all this, we require of the reader a knowledge of the calculus of probability. However, in order to make our distinctions transparent, probability has to be interpreted subjectively, not as an objective relative frequency. DA - 2009/// PY - 2009/// DO - 10.1080/07408170802322630 VL - 41 IS - 1 SP - 12-22 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-56849107795&partnerID=MN8TOARS KW - Belief functions KW - biometry KW - likelihood KW - plausibility KW - quality assurance KW - reliability KW - survival analysis KW - uncertainty KW - vagueness ER - TY - CONF TI - An empirical study of security problem reports in Linux distributions AU - Anbalagan, P. AU - Vouk, M. C2 - 2009/// C3 - International symposium on empirical software engineering and DA - 2009/// SP - 482-485 ER - TY - JOUR TI - NCSU's Virtual Computing Lab: A Cloud Computing Solution AU - Schaffer, Henry E. AU - Averitt, Samuel F. AU - Hoit, Marc I. AU - Peeler, Aaron AU - Sills, Eric D. AU - Vouk, Mladen A. T2 - COMPUTER AB - The delivery of many diverse computing services over the Internet, with flexible provisioning, has led to much greater efficiency, substantial cost savings, and many ways to enable and empower end users. NCSU's own experience with cloud computing, through its Virtual Computing Lab, indicates that this approach would be beneficial to a much wider audience.ays to enable and empower end users. NCSU's own experience with cloud computing, through its Virtual Computing Lab, indicates that this approach would be beneficial to a much wider audience. DA - 2009/7// PY - 2009/7// DO - 10.1109/mc.2009.230 VL - 42 IS - 7 SP - 94-97 SN - 1558-0814 ER - TY - JOUR TI - Skeeter Buster: A Stochastic, Spatially Explicit Modeling Tool for Studying Aedes aegypti Population Replacement and Population Suppression Strategies AU - Magori, Krisztian AU - Legros, Mathieu AU - Puente, Molly E. AU - Focks, Dana A. AU - Scott, Thomas W. AU - Lloyd, Alun L. AU - Gould, Fred T2 - PLOS NEGLECTED TROPICAL DISEASES AB - Dengue is the most important mosquito-borne viral disease affecting humans. The only prevention measure currently available is the control of its vectors, primarily Aedes aegypti. Recent advances in genetic engineering have opened the possibility for a new range of control strategies based on genetically modified mosquitoes. Assessing the potential efficacy of genetic (and conventional) strategies requires the availability of modeling tools that accurately describe the dynamics and genetics of Ae. aegypti populations.We describe in this paper a new modeling tool of Ae. aegypti population dynamics and genetics named Skeeter Buster. This model operates at the scale of individual water-filled containers for immature stages and individual properties (houses) for adults. The biology of cohorts of mosquitoes is modeled based on the algorithms used in the non-spatial Container Inhabiting Mosquitoes Simulation Model (CIMSiM). Additional features incorporated into Skeeter Buster include stochasticity, spatial structure and detailed population genetics. We observe that the stochastic modeling of individual containers in Skeeter Buster is associated with a strongly reduced temporal variation in stage-specific population densities. We show that heterogeneity in container composition of individual properties has a major impact on spatial heterogeneity in population density between properties. We detail how adult dispersal reduces this spatial heterogeneity. Finally, we present the predicted genetic structure of the population by calculating F(ST) values and isolation by distance patterns, and examine the effects of adult dispersal and container movement between properties.We demonstrate that the incorporated stochasticity and level of spatial detail have major impacts on the simulated population dynamics, which could potentially impact predictions in terms of control measures. The capacity to describe population genetics confers the ability to model the outcome of genetic control methods. Skeeter Buster is therefore an important tool to model Ae. aegypti populations and the outcome of vector control measures. DA - 2009/9// PY - 2009/9// DO - 10.1371/journal.pntd.0000508 VL - 3 IS - 9 SP - SN - 1935-2735 ER - TY - JOUR TI - Identification of protein-coding sequences using the hybridization of 18S rRNA and mRNA during translation AU - Xing, Chuanhua AU - Bitzer, Donald L. AU - Alexander, Winser E. AU - Vouk, Mladen A. AU - Stomp, Anne-Marie T2 - NUCLEIC ACIDS RESEARCH AB - We introduce a new approach in this article to distinguish protein-coding sequences from non-coding sequences utilizing a period-3, free energy signal that arises from the interactions of the 3′-terminal nucleotides of the 18S rRNA with mRNA. We extracted the special features of the amplitude and the phase of the period-3 signal in protein-coding regions, which is not found in non-coding regions, and used them to distinguish protein-coding sequences from non-coding sequences. We tested on all the experimental genes from Saccharomyces cerevisiae and Schizosaccharomyces pombe . The identification was consistent with the corresponding information from GenBank, and produced better performance compared to existing methods that use a period-3 signal. The primary tests on some fly, mouse and human genes suggests that our method is applicable to higher eukaryotic genes. The tests on pseudogenes indicated that most pseudogenes have no period-3 signal. Some exploration of the 3′-tail of 18S rRNA and pattern analysis of protein-coding sequences supported further our assumption that the 3′-tail of 18S rRNA has a role of synchronization throughout translation elongation process. This, in turn, can be utilized for the identification of protein-coding sequences. DA - 2009/2// PY - 2009/2// DO - 10.1093/nar/gkn917 VL - 37 IS - 2 SP - 591-601 SN - 1362-4962 ER -