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Title: THE SIMPLE EQUAL FLOW PROBLEM ON GENERALIZED NETWORKS
Creator: Fidler, Mary E.
Date: 2011-07, 2011-07
Description: We study algorithms for the simple equal ow problem on generalized networks. Network ows problems are concerned with optimization of the ow of...
Show moreWe study algorithms for the simple equal ow problem on generalized networks. Network ows problems are concerned with optimization of the ow of commodities over a network, a directed graph. In a network, the amount of ow that leaves a node equals the ow that arrives at the destination node. However, generalized networks have arc multipliers which change the rate of ow on each arc. A classical network ow problem is the min cost ow problem which asks for minimum cost required for the ow of a commodity that satis es individual commodity requirements of each node in a network. The simple equal ow problem considers the min cost ow problem with an additional non-network constraint that requires certain arcs to have equal ow. Ahuja et al. [2] developed a combinatorial parametric algorithm, binary search algorithm, and capacity scaling algorithm for the simple equal ow problem. In this thesis, we extend the rst two algorithms to generalized networks. To do so, we must rst reformulate the simple equal ow problem on generalized networks to parameterize the equal ow arcs. The resulting linear program creates a piecewise linear convex curve as a function of the parameter. Then, we exploit the simplex algorithm derived combinatorial basis of generalized networks to determine the distance between breakpoints of the piecewise parametric linear convex curve of optimal solutions, which helps to determine the appropriate termination condition for the algorithms. This allows us to formulate the modi ed combinatorial parametric algorithm and the modi ed binary search algorithm, and their running times.
M.S. in Applied Mathematics, July 2011
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Title: ASSOCIATIONS AMONG FOOD CRAVINGS, WEIGHT, EATING ATTITUDES AND BEHAVIORS, MOOD, AND BODY DISSATISFACTION IN PREGNANT WOMEN
Creator: Hecht, Leah
Date: 2014, 2014-12
Description: Based on Institute of Medicine recommendations, excessive gestational weight gain is a widely documented problem. At present, the relation...
Show moreBased on Institute of Medicine recommendations, excessive gestational weight gain is a widely documented problem. At present, the relation between gestational weight gain and food cravings in pregnancy is largely unknown. This study sought to assess associations between gestational food cravings and the following adverse outcomes: excessive gestational weight gain, depressed mood, disordered eating attitudes and behaviors, and body dissatisfaction. A community sample of 74 pregnant women completed self-report questionnaires. Appearance evaluation and body areas satisfaction, two indices of body dissatisfaction, were inversely correlated with disordered eating attitudes and behaviors, current body mass index (BMI), and pre-pregnancy BMI. Depression was significantly related to disordered eating attitudes and behaviors and to one index of body dissatisfaction. Excessive gestational weight gain was not related to the presence of food cravings or to consumption of craved foods. Trait-level food cravings were significantly related to disordered eating attitudes and behaviors, and disordered eating attitude scores differed significantly based on the presence of food cravings. Moderation analyses revealed that change in BMI moderated the relation between the presence of gestational food cravings and disordered eating attitudes and behaviors after accounting for relevant covariates, such that there was a stronger association between gestational food cravings and disordered eating attitudes in women with a greater change in BMI compared to women who experienced a low change in BMI. For those with a smaller change in BMI, disordered eating did not differ based on the endorsement of food cravings. However, for those with a large change in BMI, participants who reported the presence of food cravings endorsed more disordered eating as compared to those who did not report the presence of food cravings. Food cravings and gestational weight gain should be closely monitored as they may exacerbate underlying disordered eating attitudes or behaviors.
M.S. in Psychology, December 2014
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Title: MECHANICAL AND BIOCHEMICAL FACTORS INFLUENCING INITIAL PLATELET ADHESION TO COLLAGEN: IMPORTANT ROLE FOR SLIDING AND ROLLING IN ACCELERATED AGGREGATE FORMATION
Creator: Au, Bonnie
Date: 2015, 2015-05
Description: Injury at the vessel wall leads to exposure of collagen to which platelets initially adhere, grow into aggregates and eventually thrombotic...
Show moreInjury at the vessel wall leads to exposure of collagen to which platelets initially adhere, grow into aggregates and eventually thrombotic masses which can occlude the vessel lumen. This process underlies the disorders of heart attack and stroke. The initial phase of platelet aggregation governs the extent of thrombus formation. We have investigated initial platelet attachment to collagen-coated surfaces under mechanical and biochemical conditions in a parallel plate flow reactor. A simple algorithm has been developed to simulate the effects of platelet sliding/rolling on the surface with respect to the development of surface aggregate formation. Platelets are hypothesized to stop such movement once they collide with a neighboring platelet in their pathway (due to platelet coherence that strengthens the overall adhesive forces due to platelet-platelet bonding). We and others have observed microscopically that platelets will either attach firmly onto the surface, roll and slide or detach completely from the surface. Platelet behavior was investigated for overall adhesion and the translocation dynamics on overall adhesion on temperature, flow conditions, C-reactive protein (CRP), and coffee consumption. Our findings indicate that temperature, shear force, and CRP promote platelet adhesion and the intake of coffee impedes platelet adhesion.
M.S. in Biomedical Engineering, May 2015
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Title: JOINT UFH AND POWER CONTROL FOR EFFECTIVE WIRELESS ANTI-JAMMING COMMUNICATION
Creator: Xu, Kaihe
Date: 2012-04-27, 2012-05
Description: Jamming-resistant communication without pre-shared secrets has received extensive attention recently and is commonly tackled by utilizing the...
Show moreJamming-resistant communication without pre-shared secrets has received extensive attention recently and is commonly tackled by utilizing the technique of uncoordinated frequency hopping (UFH). However, existing approaches exhibit signi cant performance constraints due to the use of UFH at both the sender and the receiver sides. To improve the state of the art, in this paper we aim to signi cantly improve the performance of the anti-jamming system in the presence of a power-limited jammer. Speci cally, we for the rst time jointly consider UFH and power control and pose these two techniques into a uniform framework. The proposed approach utilizes online learning theory to determine both the hopping channels and the transmitting powers based on the history of channel status. By dividing the transmission power into multiple levels, the sender with a limited power budget is able to choose both the sending channels and the corresponding transmission power. The sender keeps re ning its knowledge of channel status to improve future channel selection and power allocation based on the feedback information from the receiver. We analytically show that, in presence of a power-limited jammer, the average transmission delay of our system is bounded by a xed value with high probability. Extensive simulations are conducted to demonstrate the e ectiveness of our scheme against various jamming attacks.
M.S. in Electrical Engineering, May 2012e
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Title: COGNITIVE DEVELOPMENTAL LEVEL AS A MODERATOR OF LANGUAGE SKILLS AND SOCIAL SKILLS AS WELL AS ACADEMIC ACHIEVEMENT AND SOCIAL SKILLS
Creator: Reife, Ilana
Date: 2012-11-13, 2012-12
Description: Past research has provided evidence that social skills are correlated to both academic achievement and language skills. In addition, Piaget’s...
Show morePast research has provided evidence that social skills are correlated to both academic achievement and language skills. In addition, Piaget’s theory asserts that certain cognitive abilities develop independent of learning (both language and academic skills) that occurs in school. The present study examined the impact of cognitive developmental level as a moderator for the relationship between social skills and academic achievement. Cognitive developmental level was measured using conservation tasks. Social skills were measured with the Social Skills Inventory System. Academic achievement was measured by the Woodcock-Johnson Tests of Achievement, Third Edition, Normative Update. This study also assessed cognitive developmental level as a moderator between social skills and language skills. Language skills were measured with the Peabody Picture Vocabulary Test. A hierarchical linear regression yielded results indicating that when controlling for IQ, gender and ethnicity, cognitive developmental level did not moderate relationships between social skills and language and social skills and academic achievement. However, post hoc analyses demonstrated that ethnicity provides a significant amount of the variance and acts as a covariate. This study contributes to the literature by providing evidence that ethnicity significantly impacts teacher ratings of social skills.
M.S. in Psychology, December 2012
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Title: WHO ONLINE DATES? PERSON VARIABLE PREDICTORS OF ONLINE DATING
Creator: Coppersmith, Jody
Date: 2012-04-23, 2012-05
Description: Due to social and technological changes, an increasing number of people are turning to online dating to seek romantic partners. People who...
Show moreDue to social and technological changes, an increasing number of people are turning to online dating to seek romantic partners. People who engage in online dating were initially thought to be socially anxious, shy individuals who became distressed in face-to-face interactions and used the Internet to compensate for their social challenges (McKenna & Bargh, 2000). However, more recent research has suggested this may no longer be the case (Valkenburg and Peters, 2007). The psychological literature has begun to address a wide range of person variables that may be related to online dating, but given the rapidly changing nature of the Internet, there is limited amount of understanding of the characteristics and motivations of individuals who engage in online dating. This study investigated the relationship between online dating and age, gender, fear of negative evaluation, introversion, perceived social support, general self-efficacy, and success finding dates face-to-face. Additionally, the belief that the online world reflects the offline world was assessed by examining the relationship between success finding dates face-to-faces and success finding dates online. The sample consisted of 110 participants: 55 participants who endorsed online dating and 55 individuals who did not endorse online dating. Results revealed that significant differences existed between online daters and non-online daters for age, success finding dates face-to-face, and perceived social support. However, only age and success finding dates face-to-face were significant predictors of who online dates. There was not a significant correlation between success findings dates face-to-face and success finding dates online. Overall, there appear to be limited differences in person characteristics of online daters and non-online daters. Online daters did not differ from non-online daters in social characteristics, one way or the other, as prior research has indicated. Rather, people of all types appear to be online dating. Despite the limitations of this study, these findings add to the growing online dating literature and support the case for an overall broad influence of technology on individuals’ lives, relationship formation, and relationship maintenance.
M.S. in Psychology, May 2012
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Title: GENERAL FACTORS IN EMPLOYEE ENGAGMENT SURVEYS
Creator: Mcdonald, Jordan C.
Date: 2017, 2017-07
Description: There is growing recognition of the need to model general factors within the context of job attitude constructs and their effects in the...
Show moreThere is growing recognition of the need to model general factors within the context of job attitude constructs and their effects in the interpretation of employee engagement survey data. General factors are defined as latent variables that account for a substantial proportion of variance in multidimensional constructs and influence all subsets of items (Ree, Carretta & Teachout, 2015). The bifactor model has gained increased attention for its advantages in modeling multidimensional constructs, including improved fit and enabling the examination of the unique contributions of the general and specific factors for prediction (Chen, Hayes, Carver, Laurenceau, & Zhang, 2012; McAbee, Oswald, & Connelly, 2014; Gignac, 2016; Reise, 2012). The aim of the current study was to apply the advantages of the bifactor model in the employee engagement survey context in predicting employee turnover compared to alternative factor models (i.e., correlated factors model). The current research consisted of two studies: the first was conducted to determine the factor model that balanced parsimony and plausibility by cross-validating the model’s generalizability with a different set of data sharing the same survey items. The second study compared the factors of the bifactor model—including the general factor—and the factors of the correlated factors model in predicting employee turnover. Accounting for the general factor in employee engagement surveys resulted in different factors being significantly to turnover compared to when the general factor was not modeled. Practical implications and directions for future research are discussed.
M.S. in Psychology, July 2017
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Title: Materials used in concrete construction
Creator: Houghton, V. A.
Date: 2009, 1906
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/materialsusedinc00houg
Thesis (B.S.)--Armour Institute of Technology;Includes bibliographical references leaves...
Show morehttp://www.archive.org/details/materialsusedinc00houg
Thesis (B.S.)--Armour Institute of Technology;Includes bibliographical references leaves 53-54 and index
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Title: Measurement of capacity in transmission lines and cables
Creator: Heim, Richard M, Dumke, William
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/measurementofcap00heim
Thesis (B.S.)--Armour Institute of Technology

Title: Measurement of the flow of water by salinity and coloration methods
Creator: Morse, R. L., Bechaud, J. P.
Date: 2009, 1917
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/measurementofflo00mors
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 2

Title: An investigation of the effect of the degree of superheat on the economy of a Marsh boiler-feed pump
Creator: Menkin, Jesse Irlis, Stillman, Edwin Howard
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationofe00menk
Thesis (B.S.)--Armour Institute of Technology, 1909 Includes bibliographical references...
Show morehttp://www.archive.org/details/investigationofe00menk
Thesis (B.S.)--Armour Institute of Technology, 1909 Includes bibliographical references and index B.S. in Mechanical Engineering, 1909
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Title: Investigation of the actual stresses in stirrups of reinforced concrete T-beams
Creator: Nitka, J., Senescall, C., Peterson, H., Weiss, L.
Date: 2009, 1918
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationofa00nitk
Thesis (B.S.)--Armour Institute of Technology;Bibliography : leaf 97

Title: Investigation of the chemical literature
Creator: Barrows, Frank E.
Date: 2009, 1919
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationofc00barr
Thesis (B.S.)--Armour Institute of Technology

Title: Investigation of an air cooling process for static transformers
Creator: Carroll, E. J., Payne, J. H.
Date: 2009, 1905
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationofa00carr
Thesis (B.S.)--Armour Institute of Technology

Title: An investigation of 20 gallon chemical fire extinguishers
Creator: Mintz, C. W., Trask, F. A.
Date: 2009, 1919
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationof200mint
Thesis (B.S.)--Armour Institute of Technology

Title: An investigation into the effect of extreme temperatures on the tensile properties of steels
Creator: Peterson, Harold C., Hall, Thomas W.
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationint00pete
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 46-48

Title: Installation and test of ados CO�b2�s recorder
Creator: Ehretsman, John Lee.
Date: 2009, 1907
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/installationtest00ehre
Thesis (B.S.)--Armour Institute of Technology, 1907 Bibliography: leaf 26 and index B.S....
Show morehttp://www.archive.org/details/installationtest00ehre
Thesis (B.S.)--Armour Institute of Technology, 1907 Bibliography: leaf 26 and index B.S. in Mechanical Engineering, 1907
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Title: INVESTIGATING THE IMPACT OF LOCAL REAL-TIME TRAFFIC INFORMATION PROVISION STRATEGY IN A CONNECTED VEHICLE SYSTEM
Creator: Chen, Shuwei
Date: 2013, 2013-12
Description: Nowadays connected vehicle systems (CVS), including vehicle-to-vehicle communication and vehicle-to-infrastructure communication. CVS has been...
Show moreNowadays connected vehicle systems (CVS), including vehicle-to-vehicle communication and vehicle-to-infrastructure communication. CVS has been recognized as a promising technology, which enables a new generation of in-vehicle routing guidance to help vehicle avoid traffic congestion with real-time traffic information provision and relief traffic congestion in network level. However, since current guidance system mainly relies on independent, selfish-routing mechanism and global real-time traffic information is uniformly provided to all users, it has a great potential that exceeding volume of traffic flow will be guided into some light traffic corridors within a short time period and cause its traffic congestions. This kind of traffic congestion may oscillate between two or several alternative corridors from time to time. Motived by the above view, the proposed research seeks to address this traffic congestion oscillation through a local information provision strategy. The range of the local information is scoped by the minimum bonding rectangle, and ellipse method, and A* algorithm is employed to provide route guidance for vehicles. The performance of the proposed information proposition strategy is measured by the network system travel time (i.e. system cost). A series of experiments, built upon a designed simulation framework using Borman expressway corridor network as test-bed, are conducted to investigate the performance of our information provision strategy under different traffic conditions, penetrations, information update frequency. Our results indicates that the proposed local information proposal strategy outperforms global information provision congested traffic condition. Under medium or high network traffic load, it produces 10-25% system travel time reduction as compared to global information provision case. Moreover, this benefit xii becomes more significant as more vehicle using real-time information to guide their trip (i.e. high penetration). In addition, we find that if the real-time information can be refreshed more frequently, the system performance would be improved further given vehicles are guided based on the proposed information provision strategy. Keyword: real-time information; TIS; simulation.
M.S. in Civil Engineering, December 2013
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Title: Investigation of the design of apparatus for the measurement of automatic sprinkler distribution
Creator: Kingsley, Thomas, Jr., Sabiston, Kenneth M.
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationofd00king
Thesis (B.S.)--Armour Institute of Technology

Title: Influence of valve setting on efficiency and capacity of a 25 horse power International Harvester Company gasoline engine
Creator: Menke, Edward, Goetz, Oscar
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/influenceofvalve00menk
Thesis (B.S.)--Armour Institute of Technology

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