Digital Commons Network^™

Remote Sensing Of Sediment Characteristics By Optimized Echo-Envelope Matching, Daniel D. Sternlicht, Christian De Moustier

Center for Coastal and Ocean Mapping

A sediment geoacoustic parameter estimation technique is described which compares bottom returns, measured by a calibrated monostatic sonar oriented within 15° of vertical and having a 10°–21° beamwidth, with an echo envelope model based on high-frequency (10–100 kHz) incoherent backscattertheory and sediment properties such as: mean grain size, strength, and exponent of the power law characterizing the interface roughness energy density spectrum, and volume scattering coefficient. An average echo envelope matching procedure iterates on the reflection coefficient to match the peak echo amplitude and separate coarse from fine-grain sediments, followed by a global optimization using a combination of simulated annealing …

Volume 28, No. 3

The Weldon Times

A student-run newspaper published at the School of Law at Dalhousie University.

Editors: Cheryl Woznica, Shawn Tock, Jon Krashinsky, Andrea Huckins

Recruiting And Selection Of Police Officers: A Case Study Of The Clark County School District Police Department, Anthony A. York

UNLV Theses, Dissertations, Professional Papers, and Capstones

This paper is a case study of the Clark County School District (CCSD) Police Department recruitment and selection process. The case study examines and evaluates the human resource function in the recruiting and hiring of police officers. The case study addresses the issue of line-staff relations and how it was best resolved in this organization in order to effectively recruit and select CCSD Police Officers. The paper addresses the historical, structural, and philosophical factors of the Clark County School District Police Department in discussing the possible organizational strategies for recruiting and selection of police officers. This paper uses a specific …

Faculty Development For Teaching Online: Educational And Technological Issues, Anne M. Barker

Nursing Faculty Publications

The purpose of this article is to describe the process of creating a faculty development program for online instruction. Both educational and technological issues are discussed. Factors that will facilitate and barriers that will impede the implementation of online courses are included. Many faculty concerns regarding online courses relate to the issues of quality and student learning. Faculty development activities are directed to ensure that courses are developed using sound educational theory and principles. Online courses are first about student learning; using the technology is second. Thus, faculty development programs must be two-pronged, involving instructional design and technology. It is …

Corporation Law After Enron: The Possibility Of A Capitalist Reimagination, David A. Westbrook

Journal Articles

No abstract provided.

Learning How To Learn : Problem Based Learning., Wendy Hillman

Australian Journal of Teacher Education

During the course of study for the Graduate Certificate of Education (Tertiary Teaching) we participated in a seminar about Problem Based Learning (PBL) and were asked to write a piece of assessment about this topic. I struggled long and hard with PBL and came up with a fairly mediocre piece of work to be assessed. This led me to an interest in PBL itself and, to the writing of this general overview of the subject. It has helped me to understand the concept and its implications within the tertiary system to a much greater degree.

Bullying And The Inclusive School Environment, Chris Forlin, Dianne Chambers

Australian Journal of Teacher Education

As Australian education departments and teacher education institutions become aware of international trends, they are keen to implement quickly pedagogical and curriculum changes that are being promoted as best practice for schools of the twenty-first century. One such recent change has been the inclusivity movement. There remain, however, many unresolved issues for teachers that fall outside these new paradigm shifts but still require urgent attention.

Describing Standards For Early Childhood Teachers : Moving The Debate Forward To The National Level., Carmel Maloney, Lennie Barblett

Australian Journal of Teacher Education

In Australia, there is no set of agreed upon national teaching standards for early childhood teachers. In some states such as Western Australia and Queensland, documents have been produced that outline generic teaching competencies for all teachers. However, research in Australia and overseas shows that one set of standards does not always fit all teaching specialisations easily. This paper reports on the culmination of a joint research project between Edith Cowan University and the Department of Education (WA) that undertook to describe the generic teaching competencies for Phase 1 teachers in terms of early childhood teachers work. The views of …

The Assassination Of President John F. Kennedy

Features

No abstract provided.

Melanoma And Seborrheic Keratosis Differentiation Using Texture Features, Srinivas V. Deshabhoina, Scott E. Umbaugh, William V. Stoecker, Randy Hays Moss, Subhashini K. Srinivasan

Chemistry Faculty Research & Creative Works

Purpose: To explore texture features in two-dimensional images to differentiate seborrheic keratosis from melanoma.

Methods: A systematic approach to consistent classification of skin tumors is described. Texture features, based on the second-order histogram, were used to identify the features or a combination of features that could consistently differentiate a malignant skin tumor (melanoma) from a benign one (seborrheic keratosis). Two hundred and seventy-one skin tumor images were separated into training and test sets for accuracy and consistency. Automatic induction was applied to generate classification rules. Data analysis and modeling tools were used to gain further insight into the feature space. …

Socio-Economic And Demographic Factors Associated With Injecting Drug Use Among Drug Users In Karachi, Pakistan, A. Agha, S. Parviz, M. Younus, Zafar Fatmi

Community Health Sciences

Objective: To identify the socio-economic and demographic factors associated with injecting drug users (IDUs) in Karachi.

Methods: We recruited 242 IDUs (taking drugs through sub-dermal routes) and 231 non-IDUs (taking drugs other than sub-dermal routes) from February through June 1996. IDUs were interviewed regarding sociodemographic factors, economic condition, and social network (marital status, living with spouse). In addition, information regarding location of drug users within the city (districts of Karachi) and current history of sexually transmitted diseases (STDs) were gathered. Moreover, blood samples were also obtained for HIV testing

.Results: Multivariate analysis showed that the income generation via illegal …

Mantle Layering Across Central South America, Kelly H. Liu, Stephen S. Gao, Paul G. Silver, Yongkai K. Zhang

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Imaging of seismic velocity discontinuities along a 3000 km profile across central South America at 20°S suggests that the depth variations of the 410-km (d410) and 660-km (d660) discontinuities are closely associated with the high-velocity Nazca slab and juxtaposed low-velocity oceanic mantle beneath the slab. The mantle transition zone thickness ranges from 220 km in the oceanic mantle to 270 km in a 600-km-wide area occupied by the deflected Nazca slab. The slab deflection has also been suggested by previous studies of seismic tomography and seismicity. This 50 km difference in the thickness corresponds to a lateral temperature variation of …

Legal Issues Involving Children, Robert E. Shepherd Jr.

University of Richmond Law Review

No abstract provided.

The Implications Of The Curriculum Process On The Design Of A Modern Engineering Programme In The Dublin Institute Of Technology, Kevin Kelly

Conference papers

In the Dublin Institute of Technology (DIT) the curriculum usually starts with a programme document. The programme document will be a snapshot of faculty thinking at a point in time, usually at the validation stage of the programme. The programme document lays down clearly the aims, objectives, facilities, staff, syllabi, learning/teaching methods, assessment procedures, programme-management arrangements and all of the other characteristics of the programme. It provides a basis for critical scrutiny by all involved. Compilation of the document is an iterative process, and the final document is scrutinised by an expert panel as part of the validation process.

A …

November 2003: Disaster Planning Makes A Difference, Dacus Library

Dacus Focus

No abstract provided.

November 2003: Sown In Tears, Reaped In Joy, Dacus Library

The Deans Corner

No abstract provided.

Statistics Of Transmission In One-Dimensional Disordered Systems: Universal Characteristics Of States In The Fluctuation Tails, Lev I. Deych, Mikhail V. Erementchouk, Alexander A. Lisyansky, Alexey Yamilov, Hui Cao

Physics Faculty Research & Creative Works

We numerically study the distribution function of the conductance (transmission) in the one-dimensional tight-binding Anderson and periodic-on-average superlattice models in the region of fluctuation states where single parameter scaling is not valid. We show that the scaling properties of the distribution function depend upon the relation between the system's length L and the length l_s determined by the integral density of states. For long enough systems, L ≫ l_s, the distribution can still be described within a new scaling approach based upon the ratio of the localization length l_loc and l_s. In an intermediate …

Comparison Of Double Disc And Combined Disc Method For The Detection Of Extended Spectrum Beta Lactamases In Enterobacteriaceae, K Jabeen, A Zafar, Rumina Hasan

Department of Pathology and Laboratory Medicine

Objective:
/="/">To compare double disc approximation and combined disc method for their ability to detect extended spectrum b lactamase (ESBL) production in enterobacteriaceae and determine the percentage of isolates which are falsely reported as sensitive in absence of ESBL detection, in a clinical microbiology laboratory of a tertiary care hospital between September-October 2002.
/="/">Methods:
/="/">Selected isolates were identified according to standard biochemical tests. Disc susceptibility tests were performed according to NCCLS. ESBL detection by combined disc [cefotaxime (30 ug) versus cefotaxime plus clavulanate (30+10 ug)] was compared with detection using double discs [amoxy-clavulanic acid (20+10 ug) and …

A Survey On Physical Delivery Versus Cash Settlement In Futures Contracts, Donald Lien, Yiu Kuen Tse

Research Collection School Of Economics

A futures contract may adopt physical delivery or cash settlement to liquidate open positions after the maturity day. While traditionally physical delivery specification is favored, exchanges have recently turned to examine cash settlement possibilities. This paper summarizes current literature on settlement specifications with emphases on market manipulation, cash index construction, and hedging effectiveness comparisons

Tests Of Functional Form And Heteroscedasticity, Zhenlin Yang, Yiu Kuen Tse

Research Collection School Of Economics

This paper considers tests of misspecification in a heteroscedastic transformation model. We derive Lagrange multiplier (LM) statistics for (i) testing functional form and heteroscedasticity jointly, (ii) testing functional form in the presence of heteroscedasticity, and (iii) testing heteroscedasticity in the presence of data transformation. We present LM statistics based on the expected information matrix. For cases (i) and (ii), this is done assuming the Box-Cox transformation. For case (iii), the test does not depend on whether the functional form is estimated or pre-specified. Small-sample properties of the tests are assessed by Monte Carlo simulation, and comparisons are made with the …

Distributed Authorship: A Feminist Case-Study Framework For Studying Intellectual Property, Sarah Robbins

Faculty Articles

To probe one case of free-ranging textual circulation, and to address issues associated with producers' rights to textual ownership and authorial credit, Robbins examines the Americanized versions of British writer Anna Barbauld's Lessons for children. Robin states that examining multiple specific cases of distributed authorship, and linking them to contemporary textual ownership issues, may well lead to nuanced extensions of the basic framework for understanding intellectual property that pioneers in the field have already formulated.

Decreasing Barriers For Teens: Evaluation Of A New Teenage Pregnancy Prevention Strategy In School-Based Clinics, Abbey C. Sidebottom, Amanda Birnbaum, Sarah S. Nafstad

Department of Public Health Scholarship and Creative Works

Sidebottom et al seek to evaluate the effects of the change in distribution systems on students' receipt of requested contraceptives and demand for contraceptive school-based clinics (SBC). The result of the study reveals that the average number of requests per student was higher under the voucher system, possibly as a consequence of expires vouchers resulting in repeated requests. The findings also suggest that SBCs could go a step further in reducing adolescents' barriers to accessing contraceptives by adopting an on-site direct delivery system..

The Spectra Of Type Ii Cepheids. Ii. The Hα Line In Intermediate-Period Stars, Edward G. Schmidt, Shawn Langan, Kevin M. Lee, Dale Johnston, Peter R. Newman, Stephanie A. Snedden

Edward Schmidt Publications

We present 98 Hα profiles for 21 pulsating variable stars with periods from 3 to 8 days. The strength, depth, and shape of Hα vary throughout the cycles of the stars in a way consistent with the temperature changes. Otherwise, they are quite uniform among all the stars, with a single exception. In FM Del, Hα is weaker and has a smaller central depth than in the other stars. This and the wavelength shifts of the core are attributed to incipient emission. The differential velocity of Hα relative to the metal lines is less than 25 km s^-1 for …

Subpopulations Of Equine Infectious Anemia Virus Rev Coexist In Vivo And Differ In Phenotype, Prasith Baccam, Robert J. Thompson, Yuxing Li, Wendy O. Sparks, Michael Belshan, Karin S. Dorman, Yvonne Wannemuehler, J. Lindsay Oaks, James L. Cornette, Susan Carpenter

Nebraska Center for Virology: Faculty Publications

Lentiviruses exist in vivo as a population of related, nonidentical genotypes, commonly referred to as quasispecies. The quasispecies structure is characteristic of complex adaptive systems and contributes to the high rate of evolution in lentiviruses that confounds efforts to develop effective vaccines and antiviral therapies. Here, we describe analyses of genetic data from longitudinal studies of genetic variation in a lentivirus regulatory protein, Rev, over the course of disease in ponies experimentally infected with equine infectious anemia virus. As observed with other lentivirus data, the Rev variants exhibited a quasispecies character. Phylogenetic and partition analyses suggested that the Rev quasispecies …

Some Thoughts On An Agenda For The Public Company Accounting Oversight Board, Elliott J. Weiss

Duke Law Journal

No abstract provided.

The Qualified Legal Compliance Committee: Using The Attorney Conduct Rules To Restructure The Board Of Directors, Jill E. Fisch, Caroline M. Gentile

Duke Law Journal

The Securities and Exchange Commission introduced a new corporate governance structure, the qualified legal compliance committee, as part of the professional standards of conduct for attorneys mandated by the Sarbanes-Oxley Act of 2002. QLCCs are consistent with the Commission's general approach to improving corporate governance through specialized committees of independent directors. This Article suggests, however, that assessing the benefits and costs of creating QLCCs may be more complex than is initially apparent. Importantly, QLCCs are unlikely to be effective in the absence of incentives for active director monitoring. This Article concludes by considering three ways of increasing these incentives.

“Mediation-Only” Filings In The Delaware Court Of Chancery: Can New Value Be Added By One Of America’S Business Courts?, Leo E. Strine Jr.

Duke Law Journal

The following Essay by Vice Chancellor Leo Strine of the Delaware Court of Chancery advocates the enactment of legislation that authorizes the Court of Chancery to handle "mediation-only" cases. Such cases would be filed solely to invoke the aid of a Chancellor to mediate a business dispute between parties. By advocating this innovative dispute resolution option, the Essay embraces a new dimension of the American judicial role that allows American businesses to more efficiently solve complicated business controversies. The mediation-only device was conceived in 2001 by members of the Delaware judiciary, including Vice Chancellor Strine, in consultation with members of …

State Regulation Of Medical Necessity: The Case Of Weight-Reduction Surgery, Mark A. Hall

Duke Law Journal

No abstract provided.

Journal Staff

Duke Law Journal

No abstract provided.

Students' Self-Reported Preferences For Print And Online Newspapers, Kristin Williams

Theses

The present study investigated the self-reported print and online newspaper reading habits of students at Rochester Institute of Technology (RIT). . A survey was distributed to a convenience sampling of 87 students in August 2003. Respondents were asked to self-report their ideas, attitudes and opinions about and towards online and printed news. . The results support previous research, including a 1999 study at RIT as well as those conducted at Pennsylvania State University and by the Pew Research Center, which revealed that college students were not reading newspapers with any regularity, but still thought that keeping up with news was …