Digital Commons Network^™

Design And Implementation Of A Storage Management Method For Content Distribution, Chang-Soo Kim, Yu-Hyeon Bak, Sang-Min Woo, Won-Jae Lee, Nunm-Ok Gee, Hag-Young Kim

Electrical and Computer Engineering Faculty Research & Creative Works

The SMART system is a special purpose server developed by ETRI and designed for efficient streaming services over high speed networks. The SMART server has one or more special purpose NS (Network-Storage) card. The NS card has several disks that store multimedia contents. However all of the multimedia contents to be serviced cannot be stored at the server. In this paper, we will describe the storage management mechanism in design and implementation aspects. With this storage management mechanism, the SMART server can provide effectiveness in managing storage and distributing some contents from a source station to streaming service servers.

Development And Implementation Of Optimized Energy-Delay Sub-Network Routing Protocol For Wireless Sensor Networks, Maciej Jan Zawodniok, Jagannathan Sarangapani, Steve Eugene Watkins, James W. Fonda

Electrical and Computer Engineering Faculty Research & Creative Works

The development and implementation of the optimized energy-delay sub-network routing (OEDSR) protocol for wireless sensor networks (WSN) is presented. This ondemand routing protocol minimizes a novel link cost factor which is defined using available energy, end-to-end (E2E) delay and distance from a node to the base station (BS), along with clustering, to effectively route information to the BS. Initially, the nodes are either in idle or sleep mode, but once an event is detected, the nodes near the event become active and start forming sub-networks. Formation of the inactive network into a sub-network saves energy because only a portion of …

Fault-Tolerant Control For Sssc Using Neural Networks And Pso, Wei Qiao, Ganesh K. Venayagamoorthy, Ronald G. Harley

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

Empirical Study Of An Unconstrained Modified Particle Swarm Optimization, Ganesh K. Venayagamoorthy, Phillip W. Moore

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, an unconstrained modified particle swarm optimization (UMPSO) algorithm is introduced and studied empirically. Four well known benchmark functions, with asymmetric initial position values, are used as testing functions for the UMPSO algorithm. The UMPSO is a variation of the canonical PSO in which the velocity and position is unconstrained, an additional strategic component is added, and the social component term has been modified. The strategy component is used instead of varying parameters or mutation to enhance diversity in the swarm during the search. The UMPSO algorithm is then compared to results obtained from the constrained canonical PSO …

Mobile Speed Classification For Cellular Systems Over Frequency Selective Rician Fading Channels, Y. Rosa Zheng, Chengshan Xiao

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, a new algorithm is proposed for estimating mobile speed of cellular systems over frequency selective Rician fading channels. Theoretical analysis is first derived and practical algorithm is proposed based on the analytical results. The algorithm employs a modified auto-covariance of received signal power to estimate the speed of mobiles. The algorithm is based on the received signals which contain unknown transmitted data, unknown frequency selective multipaths including line-of-sight(LOS) component, and random receiver noise. The algorithm works very well for frequency selective Rician fading channels with large ranges of Rice factor and angle of arrival of the LOS …

Neural Network-Based Output Feedback Controller For Lean Operation Of Spark Ignition Engines, Brian C. Kaul, Jagannathan Sarangapani, J. A. Drallmeier, Jonathan B. Vance, Pingan He

Electrical and Computer Engineering Faculty Research & Creative Works

Spark ignition (SI) engines running at very lean conditions demonstrate significant nonlinear behavior by exhibiting cycle-to-cycle dispersion of heat release even though such operation can significantly reduce NOx emissions and improve fuel efficiency by as much as 5-10%. A suite of neural network (NN) controller without and with reinforcement learning employing output feedback has shown ability to reduce the nonlinear cyclic dispersion observed under lean operating conditions. The neural network controllers consists of three NN: a) A NN observer to estimate the states of the engine such as total fuel and air; b) a second NN for generating virtual input; …

Novel Sum-Of-Sinusoids Simulation Models For Rayleigh And Rician Fading Channels, Chengshan Xiao, Y. Rosa Zheng, N. C. Beaulieu

Electrical and Computer Engineering Faculty Research & Creative Works

The statistical properties of Clarke's fading model with a finite number of sinusoids are analyzed, and an improved reference model is proposed for the simulation of Rayleigh fading channels. A novel statistical simulation model for Rician fading channels is examined. The new Rician fading simulation model employs a zero-mean stochastic sinusoid as the specular (line-of-sight) component, in contrast to existing Rician fading simulators that utilize a non-zero deterministic specular component. The statistical properties of the proposed Rician fading simulation model are analyzed in detail. It is shown that the probability density function of the Rician fading phase is not only …

On Discrete-Time Modeling Of Time-Varying Wssus Fading Channels, Christian Sgraja, Chengshan Xiao

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, we consider the serial concatenation of linear time-varying (LTV) systems and its impact on the discrete-time modeling of wide-sense stationary uncorrelated scattering (WSSUS) fading channels. By deriving an expression for the composite impulse response of the overall concatenated system, we find that unlike the time-invariant case, the concatenation of LTV systems is not commutative, i. e., the order of arrangement affects the overall impulse response. This has significant impact when a digital transmission over a time-varying fading channel, which is an LTV channel, is represented by an equivalent discrete-time model that incorporates both transmitter and receiver filters. …

Adaptive Distributed Fair Scheduling And Its Implementation In Wireless Sensor Networks, Maciej Jan Zawodniok, Jagannathan Sarangapani, Steve Eugene Watkins, James W. Fonda

Electrical and Computer Engineering Faculty Research & Creative Works

A novel adaptive and distributed fair scheduling (ADFS) scheme for wireless sensor networks is shown through hardware implementation. In contrast to simulation, hardware evaluation provides valuable feedback to protocol and hardware development process. The proposed protocol focuses on quality-of-service (QoS) issues to address flow prioritization. Thus, when nodes access a shared channel, the proposed ADFS allocates the channel bandwidth proportionally to the weight, or priority, of the packet flows. Moreover, ADFS allows for dynamic allocation of network resources with little added overhead. Weights are initially assigned using user specified QoS criteria. These weights are subsequently updated as a function of …

College Students’ Responses To Antismoking Messages: Denial, Defiance, And Other Boomerang Effects, Joyce M. Wolburg

College of Communication Faculty Research and Publications

Despite the success of antismoking campaigns that aim to prevent young teens from smoking, this qualitative study provides strong evidence that different initiatives are needed for college students, particularly those who already smoke. When asked for responses to current antismoking messages, nonsmokers generally championed the cause; however, smokers often responded with anger, defiance, denial, and other negative responses. Consumers who respond in this manner are not well served by existing strategies, and money used for such campaigns could be better spent. New strategies are offered in hopes that antismoking campaigns can communicate more effectively with one high-risk group—college student smokers.

The Experience Of Being A Full-Time Nursing Faculty Member In A Baccalaureate Nursing Education Program, Elizabeth A. Gazza

Electronic Theses and Dissertations

The purpose of this hermeneutic phenomenological study was to understand the experience of being a full-time nursing faculty member in a baccalaureate nursing program, from the perspective of those having the experience. Upon receiving approval from the Duquesne University Institutional Review Board, informants were recruited using purposive and snowball sampling techniques. Sample size was guided by data saturation. Eight female informants, with an average of 6.1 years of experience in a full-time faculty position, shared their experiences through in-depth personal interviews. Each informant participated in a second interview to clarify data from the initial interview and to verify themes identified …

The Role Of Christian Faith In Public Moral Discourse: A Comparison Of Selected Works From H. Tristram Engelhardt, Jr., Stanley Hauerwas, And Richard A. Mccormick, Andrew William Getz

Electronic Theses and Dissertations

This dissertation asks, "What is the proper role of the Christian and the Christian community in the ethical arena of a pluralistic society?" The inherently social nature of human beings means that all ethical judgments regarding right and wrong and the good of the human person have social implications. This is also true of ethical judgments of a religious or theological nature. This dissertation examines how faith "in-formed" ethical judgments function in a society of diverse faith commitments by examining some of the different understandings of the role of faith in the ethics H. Tristram Engelhardt, Jr., Stanley Hauerwas, and …

Quo Vadis: An Integrated Direction For Catholic Media Technology Engagement, Eugene M. Gan

Electronic Theses and Dissertations

Over the years, the Catholic Church has explored issues of media technology and how it relates to education. At the same time, a number of profound, modern Catholic thinkers have wrestled with the nature of media technology and how it affects the human condition. These two threads have been independent of each other. An effective conceptual understanding of the role and meaning of media technology in Catholic education requires us to weave these two threads together to craft an integrated and coherent synthesis. The question I raise is: in a culture that promulgates the digital lifestyle as the standard and …

An Exploratory Study Of Consumer Adoption Of Online Shopping: Mediating Effect Of Online Purchase Intention, Songpol Kulviwat, Ramendra Thakur, Chiquan Guo

Marketing Faculty Publications

An exploratory study was conducted to investigate consumer adoption of online purchase using a survey data set. Based upon the theory of innovation and self-efficacy theory, risk aversion, online proficiency, shopping convenience, and product choice variety were proposed to influence consumer intention to shop online, which, in turn, affects online purchases. Results of regression analyses revealed that all but shopping convenience were significant predictors of consumer intention to purchase online. In addition, consumer intention directly determines consumer purchases online. Finally, consumer intention to purchase online mediates the relationship of risk aversion, shopping convenience, and product choice variety to online shopping. …

"Can You Hear Me Now?": Expectations Of Privacy, False Friends, And The Perils Of Speaking Under The Supreme Court's Fourth Amendment Jurisprudence, Donald L. Doernberg

Elisabeth Haub School of Law Faculty Publications

Part I of this article offers a brief history of the development of Fourth Amendment jurisprudence and the Court's articulation and application of what has come to be known as the exclusionary rule, which forbids some (but not all) government use of evidence seized in violation of the Fourth Amendment. Part II focuses on the false-friend cases, elaborating the Court's reasoning and showing why, although the most famous cases involve varying kinds of activity from electronic recording to eavesdropping to simple reporting of the false friend's observation, the Court's method has united these cases under a single analytical rubric. Part …

Crime, War & Romanticism: Arthur Andersen And The Nature Of Entity Guilt, David N. Cassuto

Elisabeth Haub School of Law Faculty Publications

In 2002, Arthur Andersen, LLP stood trial for obstruction of justice. The prosecution offered several theories as to who at the firm had committed the crime but no one theory satisfied all twelve jurors. In an attempt to break its deadlock, the jury asked whether it could convict i f some jurors thought Person A at Andersen had done it and some thought it was Person B. Following argument, the judge ruled that it could convict.

This article argues that the court's response to the jury's query was wrong as a matter of law and policy. The ruling misconstrues the …

Nonlinear Control Concepts For A Ua, Vijayakumar Janardhan, Derek Schmitz, S. N. Balakrishnan

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A reconfigurable flight control method is developed to be implemented on an Unmanned Aircraft (UA), a thirty percent scale model of the Cessna 150. This paper presents the details of the UA platform, system identification, reconfigurable controller design, development, and implementation on the UA to analyze the performance metrics. A Crossbow Inertial Measurement Unit provides the roll, pitch, and yaw accelerations and rates along with the roll and pitch. The 100-400 mini-air data boom from SpaceAge Control provides the airspeed, altitude, angle of attack, and the side slip angles. System identification is accomplished by commanding preprogrammed inputs to the control …

Force Measurements On A Flapping And Pitching Wing At Low Reynolds Numbers, Kakkattukuzhy M. Isaac, Anthony Colozza, Jessica Rolwes

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Force measurements from experiments conducted in water on a flapping-and-pitching thin flat plate wing of semi-elliptic planform at low Reynolds numbers are reported. Time varying force data, measured using a force transducer, provide a means to understand the mechanisms that lead to enhanced performance observed in insect flight compared to fixed wing aerodynamics. Experimental uncertainties associated with low level (∼1N) fluid dynamic force measurements on flapping-and-pitching wings are addressed. a previously proposed pitching mode in which the leading edge and trailing edge switch roles to allow using cambered airfoils has been shown to be viable and may have advantages over …

Concurrent Multiple- Issue Negotiation For Internet-Based Services, Jiangbo Dang, Michael N. Huhns

Faculty Publications

Negotiation is a technique for reaching a mutually beneficial agreement among autonomous entities. In an Internet-based services context, multiple entities are negotiating simultaneously. The concurrent negotiation protocol extends existing negotiation protocols, letting both service requestors and service providers manage several negotiation processes in parallel. Colored Petri nets, which have greater expressive power than finite state machines and offer support for concurrency, represent the negotiation protocol and facilitate the analysis of desirable properties.

Resolving Medical Malpractice Claims In The Medicare Program: Can It Be Done?, Eleanor D. Kinney, William M. Sage

Faculty Scholarship

There is increasing interest in an integrated approach to patient safety and medical liability among policymakers. We have proposed Medicareled malpractice reform that would provide Medicare beneficiaries with better safety, improved communication in the event of error, preservation of therapeutic relationships, timely settlement, and fair compensation at a lower administrative cost. Disputes in the reformed system would be adjudicated by Medicare's existing administrative appeals system that would work together with Medicare's quality improvement regulation and payment policy to reduce errors and compensate injured patients.

Despite the laudable rationale for Medicare-led malpractice reform, important issues attend the constitutional and statutory authority …

The Role Of Medicare In Medical Malpractice Reform, William M. Sage

Faculty Scholarship

The medical malpractice crisis we think we are in is not the medical malpractice crisis we actually are in. Today's malpractice crisis is not an epidemic of lawsuits, impressionable juries, or even excessive insurance premiums. The real medical malpractice crisis is that the law has formed little connection between the malpractice system and the health care system.

A Non-Isotropic Model For Mobile-To-Mobile Fading Channel Simulations, Y. Rosa Zheng

Electrical and Computer Engineering Faculty Research & Creative Works

Accurate modeling of the mobile-to-mobile fading channel is critical not only to physical layer transceiver design but also to the design and performance of link and network layers. A two-dimensional nonisotropic scattering model is developed in this paper, which adopts the von Mises probability density function for the angle of departure surrounding the transmitter and the angle of arrival surrounding the receiver. This model includes the isotropic scattering channel and the base-to-mobile channel as special cases. An efficient computer simulation model is also developed to generate the non-isotropic scattering channel impulse responses. Statistical properties of the non-isotropic mobile-to-mobile channels are …

Adaptive And Probabilistic Power Control Algorithms For Dense Rfid Reader Network, Kainan Cha, Anil Ramachandran, Jagannathan Sarangapani

Electrical and Computer Engineering Faculty Research & Creative Works

In radio frequency identification (RFID) systems, the detection range and read rates may suffer from interferences between high power devices such as readers. In dense networks, this problem grows severely and degrades system performance. In this paper, we investigate feasible power control schemes to ensure overall coverage area of the system while maintaining a desired data rate. The power control should dynamically adjust the output power of a RFID reader by adapting to the noise level seen during tag reading and acceptable signal-to-noise ratio (SNR). We present a novel distributed adaptive power control (DAPC) and probabilistic power control (PPC) as …

Advanced Detection And Coding Techniques For Nonlinear Intersymbol Interference Cancellation In 40 Gb/S Systems, B. Vasic, I. B. Djordjevic, Vittal S. Rao

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

State Action Antitrust Exemption Collides With Deregulation: Rehabilitating The Foreseeability Doctrine, Elizabeth Trujillo

Faculty Scholarship

The state action antitrust exemption, also known as the state action immunity doctrine, is used by antitrust defendants to shield themselves against antitrust liability in instances where their anticompetitive conduct, if not under the aegis of state policy, would have been deemed a violation of federal antitrust law. Under the Midcal test, a court may grant state action immunity to a defendant if it is proven that the alleged anticompetitive conduct is pursuant to a clearly-articulated state policy and has been actively supervised by the state.

This paper evaluates the role, function, and definition of the state action exemption in …

Unreasonable Conditions Impeding Our Nation's Charities: An Unconstitutional Condition In The Combined Federal Campaign, Amy K. Ryder Wentz

Cleveland State Law Review

The Combined Federal Campaign (CFC) is an annual charity drive in which profit organizations that receive funds through the CFC to compare the names of their employees against the names on terrorist watch lists and then notify the federal government of any matches. If an organization refuses to abide by this mandate, it is prohibited from soliciting and receiving donations through the CFC. This new requirement presents a question of first impression for the courts When the issue makes its way into a courtroom, the courts may be tempted to follow the analysis of Cornelius v. NAACP Legal Defense and …

Reconsidering The Scope And Consequences Of Appellate Review In The Certification Decision Of Dukes V. Wal-Mart Stores, Inc. , Nicole Hitch

Cleveland State Law Review

This article will explore the Federal Rules of Civil Procedure and their application in the granting or denial of certification in an employment discrimination class action. In doing so, this article will examine how the district court applied these rules in the Wal-Mart action, which resulted in the certification of the largest private class action suit in American history. Additionally, this article will consider the consequences of the Ninth Circuit's utilization of permissive and liberal standards and, alternatively, the consequences of incorporation of stricter standards from various other circuit courts and the possible result of denial of certification.

Table Of Contents - Issues 1& 2, Cleveland State Law Review

Cleveland State Law Review

No abstract provided.

Propertization, Contract, Competition, And Communication: Law's Struggle To Adapt To The Transformative Powers Of The Internet, David Barnhizer

Cleveland State Law Review

This Symposium focuses in part on the ideas of Margaret Jane Radin as a point of departure for the various contributions. A key part of the analysis includes the process she calls propertization in the context of intellectual property rules and the Internet. The approach taken in this introductory essay is twofold. The first part presents some key points raised by the Symposium contributors. Of course, that overview is necessarily incomplete, because the contributions represent a rich group of analyses about vital concerns relating to how our legal system should respond to the challenge of the Internet and information systems …

Metaphor, Objects, And Commodities, George H. Taylor, Michael J. Madison

Cleveland State Law Review

As its two main Parts will evidence, this Comment remains the product of two distinct if overlapping voices. Part II returns to the conceptual origins of Radin's theory in her general critique of objectification and commodification. It asks whether a more positive concept of objectification can be recovered that is distinguishable from reification, the latter seeming to be the more appropriate locus of Radin's criticism. Part III's response to Radin is similar, but it tries to exemplify both our appreciation of and our differences from her work through more detailed analysis of intellectual property law and theory.