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2009

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Author Entropy Vs. File Size In The Gnome Suite Of Applications, Jason R. Casebolt, Daniel P. Delorey, Charles D. Knutson, Jonathan Krein, Alexander C. Maclean Jan 2009

Author Entropy Vs. File Size In The Gnome Suite Of Applications, Jason R. Casebolt, Daniel P. Delorey, Charles D. Knutson, Jonathan Krein, Alexander C. Maclean

Faculty Publications

We present the results of a study in which author entropy was used to characterize author contributions per file. Our analysis reveals three patterns: banding in the data, uneven distribution of data across bands, and file size dependent distributions within bands. Our re- sults suggest that when two authors contribute to a file, large files are more likely to have a dominant author than smaller files.

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Ruth, Redemption, Covenant, And Christ, Kerry M. Muhlestein Jan 2009

Ruth, Redemption, Covenant, And Christ, Kerry M. Muhlestein

Faculty Publications

The book of Ruth is one of the most loved stories of the Old Testament. Yet sometimes it remains just that: a story from which some readers gain little in the way of doctrine or application. We identify with the story because the principal actors are neither kings nor prophets but the average people of a typical village. There are neither mighty warriors nor great conflicts, but there are intense struggles for surviving life's difficulties and genuine battles with grief. We love the story because it is so well told, because it has characters we can identify with, because it …

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Optimization Of A Convective Air Flow Solar Food Dryer, Jonathan K. Russon, Michael L. Dunn, Frost M. Steele Jan 2009

Optimization Of A Convective Air Flow Solar Food Dryer, Jonathan K. Russon, Michael L. Dunn, Frost M. Steele

Faculty Publications

A solar food dryer, previously developed for personal and small community use, was the object of this optimization study. Based on previous research of convective solar food dehydrators, several dryer parameters were identified for this study. Chimney height and dryer product load were two factors tested in a central composite experimental design. Dryer product load was found to produce a maximum efficiency of the dryer when fifteen product-filled trays were inserted in the dryer. Maximum efficiency was observed at the maximum chimney height tested. Post-optimization configuration compared with pre-optimization configuration resulted in a 40% increase in final dry product production …

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Piezoresistive Feedback Control Of A Mems Thermal Actuator, Robert K. Messenger, Quentin Theodore Aten, Timothy W. Mclain, Larry L. Howell Jan 2009

Piezoresistive Feedback Control Of A Mems Thermal Actuator, Robert K. Messenger, Quentin Theodore Aten, Timothy W. Mclain, Larry L. Howell

Faculty Publications

Feedback control of MEMS devices has the potential to significantly improve device performance and reliability. One of the main obstacles to its broader use is the small number of on-chip sensing options available to MEMS designers. A method of using integrated piezoresistive sensing is proposed and demonstrated as another option. Integrated piezoresistive sensing utilizes the inherent piezoresistive property of polycrystalline silicon from which many MEMS devices are fabricated. As compliant MEMS structure’s flex to perform their functions, their resistance changes. That resistance change can be used to transduce the structures’ deflection into an electrical signal. The piezoresistive microdisplacement transducer (PMT) …

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Imaginative Instruction: What Master Storytellers Can Teach Instructional Designers, Jason K. Mcdonald Jan 2009

Imaginative Instruction: What Master Storytellers Can Teach Instructional Designers, Jason K. Mcdonald

Faculty Publications

Good instructional storytelling engages students’ attention and cognitive abilities to the end of more effective learning, and instructional researchers have discussed whether the principles of storytelling could lead to the same or similar results if applied to educational situations beyond only telling traditional stories. But despite this potential, the principles of storytelling are seemingly underutilized by today’s instructional designers. This study investigates what instructional designers might learn from another design field that is more experienced in the art of storytelling, specifically that of film production. Eight filmmakers who have successfully produced films that motivate, inspire, and educate were interviewed to …

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The Application Of Single-Pass Heuristics For U-Lines, Jaydeep Balakrishnan, Chun Hung Cheng, Kin Chuen Ho, Kum Khiong Yang Jan 2009

The Application Of Single-Pass Heuristics For U-Lines, Jaydeep Balakrishnan, Chun Hung Cheng, Kin Chuen Ho, Kum Khiong Yang

Research Collection Lee Kong Chian School Of Business

U-lines have been adopted in many manufacturing settings as part of JIT implementation. In this paper, we examine the applicability of existing straight-line heuristics for obtaining a balance on a U-line. We modify 13 single-pass heuristics and study the effectiveness of various heuristics under different problem conditions. An extensive computational study is carried out to help identify the best heuristics. In addition, we compare recent U-line procedures with a single-pass heuristic using some literature problems. Based on a single-pass heuristic, we compare the configurations of a straight- and U-line. © 2009 The Society of Manufacturing Engineers.

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Procter & Gamble’S Pur Water Purifier: The Hunt For A Sustainable Business Model, Lisa Jones Christensen, Jessica Thomas Jan 2009

Procter & Gamble’S Pur Water Purifier: The Hunt For A Sustainable Business Model, Lisa Jones Christensen, Jessica Thomas

Faculty Publications

Over the last 6 years, under the leadership of Dr. Greg Allgood, director of the Children’s Safe Drinking Water Program, P&G has helped to distribute 65 million PuR packets. These packets have been used to purify 650 million liters of water, most often in rural locations. Over time, and through a variety of deliberate partnerships that Allgood cultivated in 10 countries, P&G has tested three different sales and distribution models: commercial marketing, social marketing and disaster relief-- each with varying degrees of success. Drawing from past successes and failures, Allgood is considering how to fulfill P&G’s aggressive commitment to providing …

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A Petri Net-Based Approach To Reconfigurable Manufacturing Systems Modeling, Linda L. Zhang, Brian Rodrigues Jan 2009

A Petri Net-Based Approach To Reconfigurable Manufacturing Systems Modeling, Linda L. Zhang, Brian Rodrigues

Research Collection Lee Kong Chian School Of Business

Reconfigurable manufacturing systems (RMSs) have been used to provide manufacturing companies with the required capacities and capabilities, when needed. Recognizing (1) the importance of dynamic modeling and visualization in decision making support in RMSs and (2) the limitations of the existing studies, we model RMSs based on Petri net (PN) techniques with focus on the process of reconfiguring system elements while considering constraints and system performance. In response to the modeling difficulties identified, a new formalism of colored timed PNs is introduced. In conjunction with colored tokens and timing in colored PNs and timed PNs, we further define a reconfiguration …

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A Behavioral Analysis Of Passphrase Design And Effectiveness, Mark Keith, Benjamin Shao, Paul Steinbart Jan 2009

A Behavioral Analysis Of Passphrase Design And Effectiveness, Mark Keith, Benjamin Shao, Paul Steinbart

Faculty Publications

Although the use of multiple methods of user authentication for IT system increases security, passwords are often the only credential required for access. Consequently, the challenge is to discover ways to improve password strength without impairing usability. Longer pass “phrases” have received increased attention as a solution to this challenge because they are potentially more resistant to attacks yet are easy to remember. Recent evidence, however, suggests that passphrases increase the likelihood of typographical errors resulting in login failures and negative user perceptions. This paper presents experimental results that demonstrate well-designed passphrases do not increase login failures and, thereby, generate …

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Detecting Concealment Of Intent In Transportation Screening: A Proof Of Concept, Judee K. Burgoon, Douglas P. Twitchell, Matthew L. Jensen, Thomas O. Meservy, Mark Adkins, John Kruse, Amit V. Deokar, Gabriel Tsechpenakis, Shan Lu, Dimitris N. Metaxas, Jay F. Nunamaker Jr., Robert E. Younger Jan 2009

Detecting Concealment Of Intent In Transportation Screening: A Proof Of Concept, Judee K. Burgoon, Douglas P. Twitchell, Matthew L. Jensen, Thomas O. Meservy, Mark Adkins, John Kruse, Amit V. Deokar, Gabriel Tsechpenakis, Shan Lu, Dimitris N. Metaxas, Jay F. Nunamaker Jr., Robert E. Younger

Faculty Publications

Transportation and border security systems have a common goal: to allow law-abiding people to pass through security and detain those people who intend to harm. Understanding how intention is concealed and how it might be detected should help in attaining this goal. In this paper, we introduce a multidisciplinary theoretical model of intent concealment along with three verbal and nonverbal automated methods for detecting intent: message feature mining, speech act profiling, and kinesic analysis. This paper also reviews a program of empirical research supporting this model, including several previously published studies and the results of a proof-of-concept study. These studies …

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Variation Of Failure Mechanisms Due To Geometric Changes, Kaiwalya M. Telang Jan 2009

Variation Of Failure Mechanisms Due To Geometric Changes, Kaiwalya M. Telang

Theses and Dissertations

No abstract provided.

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Comparison Between Software And Hardware Implementations Of Turbo Codec Systems, Anlei Wang Jan 2009

Comparison Between Software And Hardware Implementations Of Turbo Codec Systems, Anlei Wang

Theses and Dissertations

No abstract provided.

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Computer Program For Analysis, Design And Optimization Of Propulsion, Dynamics, And Kinematics Of Multistage Rockets, Mehdi Lali Jan 2009

Computer Program For Analysis, Design And Optimization Of Propulsion, Dynamics, And Kinematics Of Multistage Rockets, Mehdi Lali

Theses and Dissertations

No abstract provided.

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A Mobile Metasearch Engine Using A Page Analysis To Enhance Information Retrieval And Layout, Anusha Gopalakrishnan Jan 2009

A Mobile Metasearch Engine Using A Page Analysis To Enhance Information Retrieval And Layout, Anusha Gopalakrishnan

Theses and Dissertations

No abstract provided.

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Equivalent Circuit Modeling And Performance Analysis Of Pem Fuel Cells Using Electrochemical Impedance Spectroscopy, Aparna M. Dhirde Jan 2009

Equivalent Circuit Modeling And Performance Analysis Of Pem Fuel Cells Using Electrochemical Impedance Spectroscopy, Aparna M. Dhirde

Theses and Dissertations

No abstract provided.

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The Expectation Of Social Dominance : The Implications Of Expectation States For A Theory Of Resistance, Joshua Clark Burbank Jan 2009

The Expectation Of Social Dominance : The Implications Of Expectation States For A Theory Of Resistance, Joshua Clark Burbank

Theses and Dissertations

No abstract provided.

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Epidemiological Risk Factors For Crimean-Congo Hemorrhagic Fever Patients, Ayten Kadanali, Serpi̇l Erol, Zülal Özkurt, Kemaletti̇n Özden Jan 2009

Epidemiological Risk Factors For Crimean-Congo Hemorrhagic Fever Patients, Ayten Kadanali, Serpi̇l Erol, Zülal Özkurt, Kemaletti̇n Özden

Turkish Journal of Medical Sciences

Aim The aim of this study was to evaluate the epidemiological risk factors for Crimean-Congo hemorrhagic fever (CCHF) patients admitted to our hospitals between January 2004- December 2006. Materials and methods: This was a study of 63 CCHF patients whose definitive diagnosis was based on the detection of CCHF virus-specific IgM by ELISA and/or of genomic segments of the CCHF virus by real time polymerase chain reaction (RT-PCR) and 50 healthy controls. Related data were collected prospectively. Results: Twenty-two (50.8%) of the patients were female, and 31 of them (49.2%) were male. The mean age of the patients was 46 …

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Cytotoxic Effects Of Caffeic Acid Phenethyl Ester (Cape) On The Human Multiple Myeloma Cell Line, Özgür Koru, Feri̇t Avcu, Mehmet Tanyüksel, Ali̇ Uğur Ural, Remzi̇ Engi̇n Araz, Kenan Şener Jan 2009

Cytotoxic Effects Of Caffeic Acid Phenethyl Ester (Cape) On The Human Multiple Myeloma Cell Line, Özgür Koru, Feri̇t Avcu, Mehmet Tanyüksel, Ali̇ Uğur Ural, Remzi̇ Engi̇n Araz, Kenan Şener

Turkish Journal of Medical Sciences

Aim: Caffeic acid phenethyl ester (CAPE) has cytotoxic, apoptotic, and antiproliferative effects on various tumor cells, and is the most active component of propolis. This study aimed to examine the in vitro effects of CAPE on the human multiple myeloma cell line. Materials and methods: CAPE was added to the ARH-77 multiple myeloma cell line and the percentage of dead cells was measured using the 3-(4,5-dimethyl-thiazoyl)-2,5-diphenyl-SH-tetrazolium bromide (MTT) assay. The percentage of live cells and growth inhibition were determined using the Trypan blue test. The percentage of IL-6 cells was determined using ELISA. Results: ARH-77 cells treated with CAPE for …

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Molecular Typing Of Methicillin-Resistant Staphylococcus Aureus Isolated From Bloodstream Infections In A University Hospital, Gülay Yetki̇n, Çi̇gdem Kuzucu, Bengül Durmaz, Riza Durmaz, Zeynep Çi̇zmeci̇, Lati̇fe İşeri̇ Jan 2009

Molecular Typing Of Methicillin-Resistant Staphylococcus Aureus Isolated From Bloodstream Infections In A University Hospital, Gülay Yetki̇n, Çi̇gdem Kuzucu, Bengül Durmaz, Riza Durmaz, Zeynep Çi̇zmeci̇, Lati̇fe İşeri̇

Turkish Journal of Medical Sciences

Aim: Bloodstream infections due to methicillin-resistant Staphyococcus aureus (MRSA) strains are one of the major problems in many hospitals. Molecular typing provides very useful information about the origin and the spreading ways of strains. The aim of the present study is to assess the clonal relationship amongst MRSA strains isolated from bloodstream infections of patients in Turgut Özal Medical Center, İnönü University in Turkey. Materials and methods: A total of 37 consecutive MRSA strains were identified from the blood cultures from January to December 2003. Methicillin resistance was confirmed with amplification of the mecA gene by polymerase chain reaction (PCR). …

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Effects Of Peer And Group Education On Knowledge, Beliefs And Breast Self-Examination Practice Among University Students In Turkey, Özgül Karayurt, Akli̇me Di̇cle, Arzu Tuna Malak Jan 2009

Effects Of Peer And Group Education On Knowledge, Beliefs And Breast Self-Examination Practice Among University Students In Turkey, Özgül Karayurt, Akli̇me Di̇cle, Arzu Tuna Malak

Turkish Journal of Medical Sciences

Aims: To determine the effects of peer and group education on knowledge and beliefs about breast cancer and performance of breast self–examination (BSE). Materials and Methods: The study included a total of 193 female university students, of whom 59 were assigned to peer education and 134 to group education. Data collected at baseline and after six months included sociodemographic characteristics, knowledge of breast cancer and BSE and performance of BSE forms, and Champion´s Health Belief Model Scale. Data were analyzed using the chi-square, McNemar chi-square, independent Student´s t, and paired Student´s t tests. Results: Mean knowledge scores increased from 42.08 …

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Necrosis In Human Cystic Echinococcosis: An Underrecognized Tissue Reaction Possibly Related To Host Response, Özlem Mi̇man, Meti̇n Atambay, Nasuhi̇ Engi̇n Aydin, Ni̇lgün Daldal Jan 2009

Necrosis In Human Cystic Echinococcosis: An Underrecognized Tissue Reaction Possibly Related To Host Response, Özlem Mi̇man, Meti̇n Atambay, Nasuhi̇ Engi̇n Aydin, Ni̇lgün Daldal

Turkish Journal of Medical Sciences

Aim: As Echinococcosis stands out worldwide as an important zoonotic cestode infection caused by various Echinococcus species, histopathological features of the disease are worthy of in-depth study. Materials and Methods: Histopathological changes in adjacent parenchymal tissue in patients with cystic echinococcosis (CE) were evaluated. The study included 91 patients 4-80 years of age (mean age: 36.24 years). Results: The histopathological findings of 83 specimens were as follows: fibrosis: 77.11%; mono-nucleated cells: 71.08%; necrosis: 67.47%; eosinophils: 51.80%; giant cells: 31.33%; neutrophils: 8.43%. Fibrosis, eosinophils, neutrophils, and giant cell infiltration were observed significantly more often than mono-nucleated cell infiltration, germinal membranes, and …

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Association Between Mean Platelet Volume And Autonomic Nervous System Functions: Increased Mean Platelet Volume Reflects Sympathetic Overactivity, Tahi̇r Durmaz, Özcan Özdemi̇r, Telat Keleş, Ni̇hal Akar Bayram, Murat Akçay, Ekrem Yeter, Hüseyi̇n Ayhan, Engi̇n Bozkurt Jan 2009

Association Between Mean Platelet Volume And Autonomic Nervous System Functions: Increased Mean Platelet Volume Reflects Sympathetic Overactivity, Tahi̇r Durmaz, Özcan Özdemi̇r, Telat Keleş, Ni̇hal Akar Bayram, Murat Akçay, Ekrem Yeter, Hüseyi̇n Ayhan, Engi̇n Bozkurt

Turkish Journal of Medical Sciences

Aim: Increased mean platelet volume (MPV) may reflect increased platelet activation and accepted as an independent coronary risk factor. Adrenergic system has effects on platelet activation and thrombocytopoiesis. In this study, we assessed the effects of autonomic nervous system activity on MPV in patients with acute myocardial infarction (MI). Materials and Methods: Forty-seven patients with acute anterior MI were compared with 32 patients having normal coronary arteries. All patients underwent heart rate variability analysis by 24-h holter monitoring and blood samples were taken for MPV measurements during day and night times during holter monitoring. Results: Mean heart rate (HR), Low …

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Effect Of Isoflavone On Plasma Nitrite/Nitrate, Homocysteine, And Lipid Levels In Turkish Women In The Early Postmenopausal Period: A Randomized Controlled Trial, Ni̇lgün Öztürk Turhan, Candan İltemi̇r Duvan, Fatma Bolkan, Yüksel Onaran Jan 2009

Effect Of Isoflavone On Plasma Nitrite/Nitrate, Homocysteine, And Lipid Levels In Turkish Women In The Early Postmenopausal Period: A Randomized Controlled Trial, Ni̇lgün Öztürk Turhan, Candan İltemi̇r Duvan, Fatma Bolkan, Yüksel Onaran

Turkish Journal of Medical Sciences

Aim: The aim of the study was to evaluate the effect of isoflavones on cardiovascular risk markers including plasma nitrite/nitrate, homocysteine, and lipid levels in Turkish women in the early postmenopausal period. Materials and Methods: Ninety participants between 42 and 59 years of age were randomly assigned to receive twice a day either isoflavone tablet (n:45) or placebo tablets (n = 45). Plasma nitrite/nitrate, homocysteine, and lipid levels were measured at baseline and after the 6 months of treatment. Results: After 6 months, isoflavone resulted in a statistically significant decrease in total cholesterol, low-density lipoproteins, triglyceride levels, serum homocysteine and …

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Primary Mucosal Desmoplastic Melanoma Of The Gingiva, Reşi̇t Doğan Köseoğlu, İbrahi̇m Aladağ, Engi̇n Sezer, Ni̇lüfer Özkan Jan 2009

Primary Mucosal Desmoplastic Melanoma Of The Gingiva, Reşi̇t Doğan Köseoğlu, İbrahi̇m Aladağ, Engi̇n Sezer, Ni̇lüfer Özkan

Turkish Journal of Medical Sciences

Desmoplastic melanoma (DM) is a very rare variant of malignant melanoma. Mucosal involvement in DM is exceedingly rare and the differential diagnosis is problematic for surgical pathologists. To the best of our knowledge only 16 cases of DM originating from mucosal surfaces of the oral cavity have been described in the literature. Herein we describe a 59-year-old male with primary DM of the oral mucosa and discuss the status of p53, caspase-3, and FasL (Fas ligand) in the pathogenesis of this rare disease.

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Endoscopic Polypectomy: Outcomes Of 467 Cases In 20 Years, S. Selçuk Atamanalp, Fuat Şentürk, Nesri̇n Gürsan, Gürkan Öztürk, Abdul Meci̇t Kantarci, M. İlhan Yildirgan, Mahmut Başoğlu Jan 2009

Endoscopic Polypectomy: Outcomes Of 467 Cases In 20 Years, S. Selçuk Atamanalp, Fuat Şentürk, Nesri̇n Gürsan, Gürkan Öztürk, Abdul Meci̇t Kantarci, M. İlhan Yildirgan, Mahmut Başoğlu

Turkish Journal of Medical Sciences

Aim: Endoscopic polypectomy has an important place in the treatment of polyps—the preliminary lesions of colorectal cancers. This study aimed to discuss the outcomes of endoscopic polypectomy in 467 patients for 692 polyps over the course of 20 years. Materials and methods: The records of 692 endoscopic polypectomies performed in 467 patients between July 1988 and July 2008 were retrospectively evaluated. Results: Patient age ranged from 3 to 85 years (mean: 50.6 years), and 302 of the 467 (64.7%) patients were male. Polypectomy was performed for 692 polyps (mean: 1.5; range: 1-12). The most common polyp location was the rectum …

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Chinese Philanthropy In Southeast Asia: Between Continuity And Change, Thomas Menkhoff Jan 2009

Chinese Philanthropy In Southeast Asia: Between Continuity And Change, Thomas Menkhoff

Research Collection Lee Kong Chian School Of Business

What makes ethnic Chinese philanthropy tick? Thomas Menkhoff looks at what drives prominent Chinese business leaders to give back to society and offers a glimpse of the changing face of ethnic philanthropy.

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Maximizing Throughput Of Bucket Brigades On Discrete Work Stations, Yun Fong Lim, Kum Khiong Yang Jan 2009

Maximizing Throughput Of Bucket Brigades On Discrete Work Stations, Yun Fong Lim, Kum Khiong Yang

Research Collection Lee Kong Chian School Of Business

One way to coordinate workers along an assembly line that has fewer workers than work stations is to form a bucket brigade. The throughput of a bucket brigade on discrete work stations may be compromised due to blocking even if workers are sequenced from slowest to fastest. For a given work distribution on the stations we find policies that maximize the throughput of the line. When workers have very different production rates, fully cross-training the workers and sequencing them from slowest to fastest is almost always the best policy. This policy outperforms other policies for most work distributions except for …

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