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Transformational Leadership Characteristics of College and University Presidents of Private, Title III and Title V-Eligible Institutions
No full textThe purpose of this study was to investigate the transformational leadership characteristics of college and university presidents of private Title III and Title V-eligible institutions. Private institutions of higher education comprise approximately half of the total post-secondary institutions in the U.S. However, they are at greater risk for closure than their public counterparts. The U.S. Department of Education’s Strengthening Institutions Program, also known as Title III, was created as part of the Higher Education Act of 1965 to provide competitive grant support to institutions with higher percentages of low-income students and comparatively smaller general and educational expenditures per student. These institutions were considered vulnerable and at the same time, were deemed to be important for the nation’s growing number of college-bound students. The Hispanic-Serving Institutions Program, also known as Title V, was established a few decades later to serve institutions with a significant percentage of Hispanic students in addition to the Title III institutional characteristics. Higher education leadership theorists vary in their views on the efficacy of president transformational leadership in the college and university setting. However, by nature, private Title III and V-eligible institutions are at some level of risk for survival and president transformational leadership practices could provide the leverage needed for continued existence and prosperity. The 219 private, four-year Title III and V-eligible college and university presidents were invited to complete Kouzes and Posner’s Leadership Practices Inventory-Self (LPI) in order to measure their leader behaviors through the LPI-descriptors "Model the Way", "Inspire a Shared Vision", "Challenge the Process", "Enable Others to Act", and "Encourage the Heart". President and institutional demographic information was also collected on gender, race/ethnicity, number of years in current position, total undergraduate student population, percent undergraduate minority population, urban or non-urban campus setting, and institutional religious affiliation to analyze for potential relationships and differences in LPI-descriptor responses. The data-generating sample was comprised of 146 presidents (66.67%) of private, four-year Title III and V-eligible institutions located throughout the United States. Presidents reported levels of engagement in transformational leader behaviors that were higher than a national average of executive managers, as measured by the Leadership Practices Inventory (LPI) (Posner, 2009). The presidents’ strongest transformational leader behavior was reported as "Enable Others to Act", followed by "Model the Way", "Inspire a Shared Vision", "Encourage the Heart", and "Challenge the Process". Undergraduate enrollment was the only variable in the study that demonstrated significance with regards to the LPI descriptor scores. The relationship between undergraduate enrollment and president responses to three of the five LPI descriptors approached significance. Undergraduate enrollment approached significance as a predictor variable in a multiple regression of institutional characteristics for two LPI descriptors and was a significant positive predictor for the leader behavior, "Challenge the Process"
A Generic Optimized Time Management Algorithms (OTMA) Framework for Simulating Large-Scale Overlay Networks
No full textThis thesis is being archived as a Digitized Shelf Copy for campus access to current students and staff only. We currently cannot provide this open access without the author's permission. If you are the author of this work and desire to provide it open access or wish access removed, please contact the Wahlstrom Library to discuss permission.Recent evolutions in wireless networks will require more efficient use of the underlying parallel discrete-event simulation (PDES) synchronization protocols to accommodate the demand for large-scale network simulation. In this dissertation, we investigate underlying synchronization protocols to improve the performance of large-scale network simulators operating over PDES systems. We begin by proposing a generic optimized time management algorithms (OTMA) framework that combines the improved forms of synchronization protocols on a single platform. Particularly, for the proposed OTMA framework, we use the layered architecture approach to combine the optimized forms of conservative and optimistic time management algorithms. To support the implementation of the OTMA framework, a new m -LP (logical process) simulation model is proposed. One of the other challenges of large-scale network simulations is the lack of a realistic analytical and mathematical model for underlying PDES protocols. In this research work, the proposed OTMA framework integrates both conservative and optimistic synchronization algorithms on a single platform. In particular, for the purposes of this research, we provide an improved form of NMA by developing a new deterministic model that quantifies the performance dependent critical parameters for PDES systems. In addition, for the implementation of NMA, a new m -LP simulation model along with the varying parameters network topology is proposed. Finally, we provide a quantitative model to support the simulation results and experimental verifications for NMA. The current DES based simulators have a large end-to-end latency and poor memory utilization. OTMA framework will provide an improved form of the existing Time Wrap algorithm by proposing a new unacknowledged message list (UML) scheme. The proposed UML scheme will provide global synchronization among large number of nodes along with a fool proof solution for message transient and simultaneous reporting problems. To illustrate the implementation of the proposed UML scheme, two algorithms are proposed for coordinating and non-coordinating LPs. In order to further improve the global virtual time (GVT) computation process, synchronous barriers (such as tree and butterfly barriers) will be combined with the asynchronous algorithms (such as Time Wrap algorithm) to provide an efficient GVT computation mechanism for large-scale distributed networks
Detection of Bleeding in Wireless Capsule Endoscopy Images Using Range Ratio Color
No full textWireless Capsule Endoscopy (WCE) is device to detect abnormalities in colon,esophagus,small intestinal and stomach, to distinguish bleeding in WCE images from non bleeding is a hard job by human reviewing and very time consuming. Consequently, automation for classifying bleeding frames not only will expedite the process but will reduce the burden on the doctors. Using the purity of the red color we can detect the Bleeding areas in WCE images. But, we could find various intensity of red color values in different parts of the small intestinal,so it is not enough to depend on the red color feature alone. We select RGB (Red,Green,Blue) because it takes raw level values and it is easy to use. In this paper we will put range ratio color for each of R,G,and B. Therefore, we divide each image into multiple pixels and apply the range ratio color condition for each pixel. Then we count the number of the pixels that achieved our condition. If the number of pixels grater than zero, then the frame is classified as a bleeding type. Otherwise, it is a non-bleeding. Our experimental results show that this method could achieve a very high accuracy in detecting bleeding images for the different parts of the small intestinal
The Scribe
No full textThis is the November 2010 edition of The Scribe, Issue 4. The front page features President Barack Obama’s October 30 visit to Bridgeport’s Arena at Harbor Yard, as well as Comedy Central’s Rally to Restore Sanity and/or Fear in Washington, D.C. Additional articles include English Professor Amy Nawrocki’s publication of her second chapbook, Nomad’s End; University of Bridgeport President Salonen’s visit to China; LINK (Liberty in North Korea)’s campus visit and screening of their documentary, Hiding; the creation of a Criminal Justice Honors Society at UB; the launch of a new History Club; a feature on Professor Douglas J. House; and sports coverage
The Scribe
No full textThis is the September 2010 edition of The Scribe, September 2010, Issue 1. The front page features an article on UB students studying abroad in Jordan through an exchange program between the University of Bridgeport and the Princess Sumaya University of Technology, as well as a report on residential housing shortages at UB. Additional articles cover the “Red Flag Campaign” against domestic violence and stalking, funded by a Department of Justice grant, revisions to UB’s weapons policy, and coverage of UB’s women’s soccer team
The Scribe
No full textThis is the April 15, 2010 edition of the Scribe, Spring 2010, Issue 5. The front page features an article on UB's 34th International Festival as well as an article on its annual Accepted Students Day for the class of 2014. Other articles include UB students visiting the NBC Universal studio in Stamford, UB's inoperable bowling alley, and sports updates
The Scribe
No full textThis is the April 28, 2010 edition of the Scribe, Spring 2010, Issue 6. The front page celebrates UB's 100th commencement ceremony. Other articles include a variety of senior profiles, including an article about a father and daughter, Jack and Justine Sullivan, graduating in the same commencement ceremony
Parameterized Affect of Transmission-Range on Lost of Network Connectivity (LNC) of Wireless Sensor Networks
No full textWireless Sensor Networks, referred to as WSNs, are made up of various types of sensor nodes. Recent developments in micro electro-mechanical technology have given rise to new integrated circuitry, microprocessor hardware and nanotechnology, wireless technology, and advanced networking routing protocols. Hospitals and health service facilities, the armed forces, and even residential customers represent a potential huge market for these devices. The problem is that existing sensor network nodes are incapable of providing the support needed to maximize usage of wireless technology. For this reason, there are many novel routing protocols for the wireless sensor networks proposed recently. One is Hierarchical or cluster-based routing. In this paper, we analyze three different types of hierarchical routing protocols: Low Energy Adaptive Clustering Hierarchy (LEACH), Power-Efficient Gathering in Sensor Information Systems (PEGASIS), and Virtual Grid Architecture (VGA). We tried to analyze the performance of these protocols, including the power consumption and overall network performance. We also compared the routing protocol together. This comparison reveals the important features that need to be taken into consideration while designing and evaluating new routing protocols for sensor networks. The simulation results, using same limited sensing range value, show that PEGASIS outperforms all other protocols while LEACH has better performance than VGA. Furthermore, the paper investigates the power consumption for all protocols. On the average, VGA has the worst power consumption when the sensing range is limited, while VGA is the best when the sensing range is increased. Using homogeneous nodes can greatly prolong sensor network’s life time. Also, the network lifetime increases as the number of clusters decreases