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Kennesaw State University

2008

Articles 1 - 22 of 22

Full-Text Articles in Physical Sciences and Mathematics

Animated Database Courseware: Using Animations To Extend Conceptual Understanding Of Database Concepts, Meg Murray, Mario Guimaraes Dec 2008

Animated Database Courseware: Using Animations To Extend Conceptual Understanding Of Database Concepts, Meg Murray, Mario Guimaraes

Faculty and Research Publications

Teaching abstract concepts can be best supported with supplemental instructional materials such as software animations. Visualization and animations have been shown to increase student motivation and help students develop deeper understandings. Through an NSF funded CCLI grant, a set of animations to support the teaching of database concepts is being developed and made freely available. Current modules available cover areas such as database design, interactive SQL, stored procedures and triggers, transactions and database security. In this paper, we provide an overview of the Animated Database Courseware (ADbC) as well as provide examples of how this software might be utilized in …

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Computing For The Masses: Extending The Computer Science Curriculum With Information Technology Literacy, Jorge Pérez, Meg C. Murray Dec 2008

Computing For The Masses: Extending The Computer Science Curriculum With Information Technology Literacy, Jorge Pérez, Meg C. Murray

Faculty and Research Publications

Enrollments in computer science programs continue to drop as demand for workers skilled in computing increases. Information technology scholars face the ironic challenge of attracting more students into computing disciplines in the age of ubiquitous computing. This paper chronicles a decision by a department of computer science and information systems to offer an information technology literacy course as a service to its institution. Educational and curricular justifications for the course progressed in parallel with recognition of the course's strategic value to the department in the face of sharp declines in the number of students majoring in CS or IS. Following …

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Higher Order Corrections To H± Production, Nikolaos Kidonakis Nov 2008

Higher Order Corrections To H± Production, Nikolaos Kidonakis

Faculty and Research Publications

I discuss recent calculations of higher-order corrections to charged Higgs production through various partonic subprocesses. Particular attention is paid to H− production in association with a top quark at the LHC.

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Theoretical Top Quark Cross Section At The Fermilab Tevatron And The Cern Lhc, Nikolaos Kidonakis, Ramona Vogt Oct 2008

Theoretical Top Quark Cross Section At The Fermilab Tevatron And The Cern Lhc, Nikolaos Kidonakis, Ramona Vogt

Faculty and Research Publications

We present results for the top quark pair cross section at the Tevatron and the LHC. We use the resummed double differential cross section, employing the fully kinematics-dependent soft-anomalous-dimension matrices, to calculate the soft-gluon contributions at next-to-next-to-leading order (NNLO). We improve and update our previous estimates by refining our methods, including further subleading terms, and employing the most recent parton distribution function sets. The NNLO soft corrections significantly enhance the NLO cross section while considerably reducing the scale dependence. We provide a detailed discussion of all theoretical uncertainties in our calculation, including kinematics, scale, and parton distribution uncertainties, and clarify …

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The Theoretical Top Quark Cross Section At The Tevatron And The Lhc, Nikolaos Kidonakis, Ramona Vogt Oct 2008

The Theoretical Top Quark Cross Section At The Tevatron And The Lhc, Nikolaos Kidonakis, Ramona Vogt

Faculty and Research Publications

We present results for the top quark pair cross section at the Tevatron and the LHC. We use the resummed double differential cross section, employing the fully kinematics-dependent soft-anomalous-dimension matrices, to calculate the soft-gluon contributions at next-to-next-to-leading order (NNLO). We improve and update our previous estimates by refining our methods, including further subleading terms, and employing the most recent parton distribution function sets. The NNLO soft corrections significantly enhance the NLO cross section while considerably reducing the scale dependence. We provide a detailed discussion of all theoretical uncertainties in our calculation, including kinematics, scale, and parton distribution uncertainties, and clarify …

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An Exploratory Overview Of Teaching Computer Game Development, Mario Guimaraes, Meg C. Murray Oct 2008

An Exploratory Overview Of Teaching Computer Game Development, Mario Guimaraes, Meg C. Murray

Faculty and Research Publications

The computer game industry has exploded reaching sales of several billion dollars a year and, consequently, a majority of college students are familiar with the gaming environment. In fact, videogame development has been cited as one way to motivate students to explore the world of Computer Science. However, most videogames are extremely complex computer programs created by a team of developers including programmers and graphic artists and represent thousands of hours of work. Fortunately there are software tools available that provide a way for simple computer games to be created fairly easily using a building block approach. This paper discusses …

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Soft And Collinear Enhancements To Top Quark And Higgs Cross Sections, Nikolaos Kidonakis Jul 2008

Soft And Collinear Enhancements To Top Quark And Higgs Cross Sections, Nikolaos Kidonakis

Faculty and Research Publications

I present calculations of soft and collinear corrections to the cross-sections for single top quark production, and for Higgs production via bb H at the Tevatron and the LHC. I show that the corrections provide significant enhancements to the cross-sections in both cases. For single top production the soft gluon corrections dominate the cross-section, particularly in the s-channel and in tW production. For Higgs production it is shown that purely collinear terms have to be included as well to provide an accurate calculation.

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Positive Solutions Of A Third-Order Three-Point Boundary-Value Problem, Bo Yang Jul 2008

Positive Solutions Of A Third-Order Three-Point Boundary-Value Problem, Bo Yang

Faculty and Research Publications

We obtain upper and lower estimates for positive solutions of a third-order three-point boundary-value problem. Sufficient conditions for the existence and nonexistence of positive solutions for the problem are also obtained. Then to illustrate our results, we include an example.

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An Integrated Evaluation Method For Module-Based Undergraduate Information Retrieval Education, Yong Shi, Lei Zhu, Jane Wong, Bradley Sturz, Chun Tang Jun 2008

An Integrated Evaluation Method For Module-Based Undergraduate Information Retrieval Education, Yong Shi, Lei Zhu, Jane Wong, Bradley Sturz, Chun Tang

Faculty and Research Publications

In the Information Age, career and life-long learning increasingly depend on information-retrieval (IR) skills to utilize digital and on-line information effectively. Consequently, IR has become a valuable integral element of many disciplines. To address primary problems in the current college-level IR education, we have proposed a module-based curricular model that facilitates the development of an array of IR course modules that enable flexible adoption and integration. In addition, these modules can be designed to meet the specific needs of various disciplines and programs. This paper presents a preliminary integrated evaluation method which combines subjective and objective evaluation in order to …

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Higgs Production Via B Bbar -> H In Hadron Colliders, Nikolaos Kidonakis May 2008

Higgs Production Via B Bbar -> H In Hadron Colliders, Nikolaos Kidonakis

Faculty and Research Publications

I present NNNLO collinear and soft gluon corrections for Higgs production via the process b bbar -> H. I show that the collinear corrections dominate and contribute large enhancements to the cross section at both the Tevatron and the LHC.

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Status Of Eikonal Two-Loop Calculations With Massive Quarks, Nikolaos Kidonakis, Philip Stephens May 2008

Status Of Eikonal Two-Loop Calculations With Massive Quarks, Nikolaos Kidonakis, Philip Stephens

Faculty and Research Publications

We present results for two-loop diagrams with massive quarks in the eikonal approximation. Explicit expressions are given for the UV poles in dimensional regularization of several of the required integrals.

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2008 - The Thirteenth Annual Symposium Of Student Scholars Apr 2008

2008 - The Thirteenth Annual Symposium Of Student Scholars

Symposium of Student Scholars Program Books

The full program book from the Thirteenth Annual Symposium of Student Scholars, held on April 14, 2008. Includes abstracts from the presentations and posters.

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A Closer Look At The Crease Length Problem, Sean F. Ellermeyer Apr 2008

A Closer Look At The Crease Length Problem, Sean F. Ellermeyer

Faculty and Research Publications

An optimization problem that appears as an exercise in most modern calculus textbooks is the crease length problem. Here, Ellermeyer provides a solution of the general crease length problem in which all possible foldings of a corner to the opposite edge are taken into account. One of his findings will be that the minimum crease length is never produced by a Case 2 fold and hence that the general crease length problem always yields a different minimum than the constrained problem that is treated in the textbooks. He discovers a criterion that determines which foldings must be performed in order …

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After The System Upgrade Or Migration: A Cataloging Checklist, Sheryl Stump, Rick Torgerson Apr 2008

After The System Upgrade Or Migration: A Cataloging Checklist, Sheryl Stump, Rick Torgerson

The Southeastern Librarian

At present. integrated library system (ILS) upgrades and migrations seem to be coming faster and more frequently. The reasons for this trend are many. among them being: 1) hardware upgrades are common due to the need for more memory to run the software; 2) software upgrades and migrations are desired because of the promise of new or improved features; 3) changes in system vendor ownership can affect changes in their software; 4) software and hardware upgrades are needed due to the advanced age of either or both; and 5) system upgrades on a yearly basis may be necessary to prevent …

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Collinear And Soft-Gluon Corrections To Higgs Production At Next-To-Next-To-Next-To-Leading Order, Nikolaos Kidonakis Mar 2008

Collinear And Soft-Gluon Corrections To Higgs Production At Next-To-Next-To-Next-To-Leading Order, Nikolaos Kidonakis

Faculty and Research Publications

I present analytical expressions for the collinear and soft-gluon corrections to Higgs production via the process b (b) over bar -> H as well as gg -> H through next-to-next-to-next-to-leading order (NNNLO). The soft corrections are complete, while the collinear corrections include leading and some subleading logarithms. Numerical results at the Tevatron and the CERN LHC are presented, primarily for b (b) over bar -> H. It is shown that the collinear terms greatly improve the soft and virtual approximation at next-to-leading order and next-to-next-to-leading order, especially when subleading terms are included. The NNNLO collinear and soft corrections provide significant …

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Eigenvalue Comparisons For Boundary Value Problems Of The Discrete Elliptic Equation, Jun Ji, Bo Yang Jan 2008

Eigenvalue Comparisons For Boundary Value Problems Of The Discrete Elliptic Equation, Jun Ji, Bo Yang

Faculty and Research Publications

In this paper we study a boundary value problem for a discrete elliptic equation. The focus will be on the structure of the spectrum of this problem and the existence of a positive eigenvector corresponding to the smallest eigenvalue. Comparison results for the eigenvalues are also established as the coefficients of the problem changes.

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Estimates Of Positive Solutions For Higher Order Right Focal Boundary Value Problem, Bo Yang Jan 2008

Estimates Of Positive Solutions For Higher Order Right Focal Boundary Value Problem, Bo Yang

Faculty and Research Publications

We consider the (p;n - p) right focal boundary value problem. A new set of upper and lower estimates of positive solutions for the boundary value problem are obtained. These estimates implement and improve the ones in the literature.

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Expanding The Database Curriculum, Meg Murray, Mario Guimaraes Jan 2008

Expanding The Database Curriculum, Meg Murray, Mario Guimaraes

Faculty and Research Publications

As database concepts and technologies continue to evolve there exists a need to expand the topics included in database curricula. This is challenging given the restraints on the number of courses that can be included in a typical CS or IS program. While a set of commonly identified core concepts and principles exists, there is little consensus on what supplemental materials should be included in database courses. Through an NSF proof-of-concept grant, we designed and developed courseware incorporating the use of animations to deepen and enrich standard presentations of core database concepts and to complement database teachings as found in …

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Subcoid: An Attempt To Explore Cluster-Outlier Iterative Detection Approach To Multi-Dimensional Data Analysis In Subspace, Yong Shi Jan 2008

Subcoid: An Attempt To Explore Cluster-Outlier Iterative Detection Approach To Multi-Dimensional Data Analysis In Subspace, Yong Shi

Faculty and Research Publications

Many data mining algorithms focus on clustering methods. There are also a lot of approaches designed for outlier detection. We observe that, in many situations, clusters and outliers are concepts whose meanings are inseparable to each other, especially for those data sets with noise. Clusters and outliers should be treated as the concepts of the same importance in data analysis. In our previous work [22] we proposed a cluster-outlier iterative detection algorithm in full data space. However, in high dimensional spaces, for a given cluster or outlier, not all dimensions may be relevant to it. In this paper we extend …

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Detecting Clusters And Outliers For Multi-Dimensional Data, Yong Shi Jan 2008

Detecting Clusters And Outliers For Multi-Dimensional Data, Yong Shi

Faculty and Research Publications

Nowadays many data mining algorithms focus on clustering methods. There are also a lot of approaches designed for outlier detection. We observe that, in many situations, clusters and outliers are concepts whose meanings are inseparable to each other, especially for those data sets with noise. Thus, it is necessary to treat clusters and outliers as concepts of the same importance in data analysis. In this paper, we present a cluster-outlieriterative detection algorithm, tending to detect the clusters and outliers in another perspective for noisy data sets. In this algorithm, clusters are detected and adjusted according to the intra-relationship within clusters …

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Fuzzyshrinking: Improving Shrinking-Based Data Mining Algorithms Using Fuzzy Concept For Multi-Dimensional Data, Yong Shi Jan 2008

Fuzzyshrinking: Improving Shrinking-Based Data Mining Algorithms Using Fuzzy Concept For Multi-Dimensional Data, Yong Shi

Faculty and Research Publications

In this paper, we present continuous research on data analysis based on our previous work on the shrinking approach. Shrinking[19] is a novel data preprocessing technique which optimizes the inner structure of data inspired by the Newton's Universal Law of Gravitation[16]in the real world. It can be applied in many data mining fields. In this approach data are moved along the direction of the density gradient, thus making the inner structure of data more prominent. It is conducted on a sequence of grids with different cell sizes. In this paper, we applied the Fuzzy concept to improve the performance …

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Examining Granular Computing From A Modeling Perspective, Ying Xie, Jayasimha R. Katukuri, Vijay V. Raghavan Jan 2008

Examining Granular Computing From A Modeling Perspective, Ying Xie, Jayasimha R. Katukuri, Vijay V. Raghavan

Faculty and Research Publications

In this paper, we use a set of unified components to conduct granular modeling for problem solving paradigms in several fields of computing. Each identified component may represent a potential research direction in the field of granular computing. A granular computing model for information analysis is proposed. The model may suggest that granular computing is an instrument for implementing perception based computing based on numeric computing. In addition, a novel granular language modeling technique is proposed for information extraction from web pages. This paper also suggests that the study of data mining in the framework of granular computing may address …

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