Digital Commons Network^™

Proses Penyelesaian Masalah Algebra Di Kalangan Pelajar Diploma Di Sebuah Institusi Pengajian Tinggi, Roselah Osman

Student Works (2000-2009)

The main objective of this study is to examine the problem solving process in learning Algebra, employed by the first semester students of diploma in engineering from an institute of higher learning. The research instrument comprised of five problem solving questions on basic Algebra. Six students were randomly selected as the research sample. The research data were the steps of written solutions shown by the sample. A modified scoring Rubric was used to analyse the process and the strategies used by the students to solve every problem solving question. The results of the study shows that some of the students …

Pelaksanaan Pentaksiran Amali Sains Berasaskan Sekolah Di Beberapa Buah Sekolah Menengah Daerah Hilir Perak, Alias Mingan

Student Works (2000-2009)

The purpose of this study is to investigate the implementation of the school based practical science assessment in several secondary schools in the Lower Perak District. The school based practical science assessment is carried out through the PEKA programme. Four aspects of the implementation of the PEKA programme was studied. The four aspects were (i) teachers' understanding of procedures in carrying out the PEKA programme after having attended relevant courses, (ii) teachers' ability in carrying out the PEKA programme, (iii) students' readiness to be assessed via PEKA, and (iv) factors which hinder the effectiveness of the implementation of the PEKA …

Penilaian Guru Terhadap Kaedah Pembelajaran Matematik Berasaskan Web Untuk Tajuk Set, Sa'adiah Mohamad Ali

Student Works (2000-2009)

The purpose of this study was to investigate teachers' evaluation on a Web-based Mathematics learning method for the topic "Set". The study focused on the learning activities and the six links in an online learning template designed for Mathematics learning. The study was conducted in the form of a workshop. A total of 18 teachers from 9 secondary schools were selected as the sample in this study. Data was collected through questionnaire and checklist. Overall, the findings in this study indicated that teachers held positive view towards the use of Web-based Mathematics learning method for the topic .. Set". A …

Analysis And Synthesis Of Primary Side Cycle By Cycle Control Of Isolated Flyback Converters, Radoslaw Nalepa

Theses

This work presents the analysis and design of an isolated flyback converter, without feedback from the load side. The converter is controlled from the primary side using the switch voltage and innovative control circuit topologies.

A detail study of the flyback circuit is undertaken including all known parasitics. Besides the standard parasitics, for example the capacitor resistive effect, other more subtle effects are included in the model development such as inter coil couplingj source capacitance etc. Development of these models has provided information about circuit simplifications without losing accuracy of the model. As a consequence of this model development, it …

Software Architecture In Project Management, Kum Yeng Looi

Student Works (2000-2009)

Software architecture is vital for large and complex software systems in which the main means is controlling complexity. Currently, software development has been deteriorating from architecture point of view over the years as a result of adaptation of vast changing of system requirements. Consequently, architecture improvement of existing software is therefore turning more and more important. Software architecture is a set of concepts and design decisions about the structure and texture of software that must be made prior to concurrent engineering to enable effective satisfaction of architecturally significant explicit functional and quality requirements and implicit requirements of the product family, …

Remote Monitoring System, Chin Kee Tan

Student Works (2000-2009)

Research is conducted to analysis and evaluate about the Remote Monitoring System. The details process of developing the Remote Monitoring System will be discussed throughout whole section of this project. The primary objective of this project is to explore on how Remote Monitoring CCTV process work as well as the application area used in Remote Monitoring CCTV system. This project involves creating a real time monitoring video camera system as a prototype. The developer will perform the development of the system according to system development life cycle. Stages of the system development life cycle for developing the remote monitoring software …

Analysis Of Loratadine By Potentiometry And Reverse-Phase High Performance Liquid Chromatography, Kian Yong Puen

Student Works (2000-2009)

A non-aqueous titration method was developed to assay Loratadine bulk active and a High Performance Liquid Chromatography (HPLC) method was developed to determine Loratadine's manufacturing impurity. The HPLC method was also suitable for simultaneously assay and related substance determination of Loratadine pharmaceutical preparations. In the tritation method, glacial acetic acid was chosen as an amphiprotic solvent. Loratadine ionised in glacial acetic acid; the conjugated base of acetic acid (Ac·), was then titrated with standardised perchloric acid. The method was validated found to be precise, linear and robust. Reverse-phase HPLC method using a Novapak Cl8 column with a CH3CN: I0mM K2HPO4 …

Local And Systemic Controls On Fish And Fish Habitat In South Dakota Rivers And Streams: Implications For Management, Craig L. Milewski

Electronic Theses and Dissertations

Assessments of the health of rivers and streams in prairie environments would improve if the role of systemic patterns and processes among geologic-climatic settings in controlling physical habitat and fish communities were better defined. My research approach was based on a premise that assessments of the health of rivers and streams in prairie environments would benefit from studies that 1) examine the moderating effects of systemic patterns and processes by comparing physical habitat continua and fish communities among geologic-climatic settings, 2) determine the relative influence of locally interacting variables (e .g., channel shape and riparian vegetation) and systemic processes in …

Population Characteristics And Sampling Methods Of Catfish For The James And Big Sioux Rivers, John E. Aterburn

Electronic Theses and Dissertations

Concerns about the sustainability of catfish populations that produce large fish have increased because of abundant media images of large catfish and improvements in specialized fishing equipment. This study will help biologists address these concerns by providing important information about the channel catfish lctalurus punctarus and flathead catfish Pylodictis olivaris populations of the James and Big Sioux rivers and by assessing the effectiveness of various gears used to sample catfish. I compared the number of channel catfish and flathead catfish caught on trotlines by riverine habitat type, hook type, and bait type along with electrofishing and different hoop net combinations. …

Electric Field Controlled, Pulsed Autoionization In Two Electron Wave Packets, J. Greg Story, Heider N. Ereifej

Physics Faculty Research & Creative Works

In this paper, control of the evolution of a two electron wave packet through the application of a static electric field is demonstrated. Specifically, application of a small electric field is used to produce pulsed autoionization events, the timing of which can be controlled on a picosecond time scale. The technique is demonstrated by exciting calcium atoms using a short-pulsed laser to the 4p_3/219d doubly excited state, which is energy degenerate with the 4p_1/2nk stark states. Evolution of the resultant wave packet is monitored through the application of a second short laser pulse, which stimulates the …

The Status And Distribution Of The Topeka Shiner Notropis Topeka In Eastern South Dakota, Carmen M. Blausey

Electronic Theses and Dissertations

The Topeka shiner Notropis topeka is a small (< 75 mm) minnow that inhabits prairie streams in several north central plains states. Once widespread and abundant throughout its historic range, the Topeka shiner is now found only in isolated populations. Because of an 80% reduction in occurrence throughout their range, the U.S. Fish and Wildlife Service listed the Topeka shiner as endangered in January 1999. At the time, limited information on habitat preferences and dist1ibution existed for this species in South Dakota. The objectives of this study were to measure local habitat features and water quality conditions at the reach scale at Topeka shiner study sites, create a model using these data to determine favorable habitat conditions, and identify fish species commonly associated with Topeka shiners. Fish and habitat data were collected at 61 tributary sites of the James, Vermillion, and Big Sioux rivers from June through September in 1999 and 2000. Sample sites in 1999 were based on historic Topeka shiner records in the South Dakota Natural Heritage Database. Sample sites in 2000 were based on a draft GIS model identifying potential Topeka shiner streams. Fish were collected with seines between block nets and standard procedures were used to measure physical and hydrological features of stream reaches. Cyprinids dominated the fish community for each river basin during both sample years. Insectivores and omnivores were the dominant trophic classes for each river basin for both sample years. Fish community associations for Topeka shiners were based on two stepwise logistic regression models: abundance of individual species at each site and presence or absence of individual species at each site. The abundance model indicated that Topeka shiners were most commonly associated with orangespotted sunfish Lepomis lutrenis and tadpole madtoms Noturns gyrinus. The presence/absence model showed that Topeka shiners were typically associated with red shiners Notropis lutrenis, tadpole madtoms Noturns gyrinus, black bullheads Ameiurus melas, and bigmouth shiners Notropis dorsalis. Habitat preferences were based on three stepwise logistic regression models: physical habitat water quality, and substrate composition at the reach scale. The physical habitat model indicated that Topeka shiners are associated with stream reaches that had low animal use, overhanging vegetation, stream bank vegetation comprised of sedges/rushes, low depositional zones, and run macrohabitat. The water quality model did not indicate any favorable or preferred conditions. The substrate model indicated that Topeka shiners are associated with stream reaches that had fine gravel or cobble substrates. The results of my study will lead to a better understanding of Topeka shiner distribution and habitat, and aid federal and state agencies in making management decisions that provide for protection and preservation of this species.

Study Of Dynamics And Mechanism Of Metal-Induced Silicon Growth, Elena A. Guliants, Wayne A. Anderson

Electrical and Computer Engineering Faculty Publications

The present study addresses the mechanism of metal-induced growth of device-quality silicon thin films. Si deposition was performed by magnetron sputtering on a 25-nm-thick Ni prelayer at 525–625 °C and yielded a continuous, highly crystalline film with a columnar structure. A Ni disilicide intermediate layer formed as a result of the Ni reaction with Si deposit provides a sufficient site for the Si epitaxial growth because lattice mismatch is small between the two materials. The reaction between Ni and Si was observed to progress in several stages. The NixSiy phase evolution in a Ni:Si layer was studied by x-ray photoelectron …

Clark University Academic Catalog [2000-2001], Clark University

Clark University Academic Catalogs

Annual academic catalog for the 2000-2001 academic year at Clark University.

Clark University academic catalogs contain academic announcements, course listings and descriptions, degrees and degree requirements, registers of instructor and administrator names, information on buildings and grounds, Clark history, and more. They have had various titles throughout the decades, but for consistency we collectively refer to them as academic catalogs across all titles.

Excerpts Of Directory, University Of South Florida, 2001-2002, University Of South Florida

Excerpts of University Directories

Excerpts from the 2001-2002 University of South Florida directory. The pages include numbers for the St. Petersburg campus.

Obstacles To Bounded Recovery, Boris Shekhtman

Mathematics and Statistics Faculty Publications

Let X be a Banach space, V⊂X is its subspace and U⊂X*. Given x∈X, we are looking for v∈V such that u (v)=u (x) for all u∈U and ‖v‖ ≤M‖x‖. In this article, we study the restrictions placed on the constant M as a function of X,V, and U.

Arithmetic Progressions That Consist Only Of Reduced Residues, Paul A. Tanner Iii

Mathematics and Statistics Faculty Publications

This paper contains an elementary derivation of formulas for multiplicative functions of m which exactly yield the following numbers: the number of distinct arithmetic progressions of w reduced residues modulo m; the number of the same with first term n; the number of the same with mean n; the number of the same with common difference n. With m and odd w fixed, the values of the first two of the last three functions are fixed and equal for all n relatively prime to m; other similar relations exist among these three functions.

Nonexistence Theorems For Weak Dolutions Of Quasilinear Elliptic Equations, A. G. Kartsatos, V. V. Kurta

Mathematics and Statistics Faculty Publications

New nonexistence results are obtained for entire bounded (either from above or from below) weak solutions of wide classes of quasilinear elliptic equations and inequalities. It should be stressed that these solutions belong only locally to the corresponding Sobolev spaces. Important examples of the situations considered herein are the following: Σi=1n(a (x)|∇u| p−2uxi)=−|u| q−1u,Σi=1n(a (x)| uxi | p−2uxi)xi=−|u| q−1u,Σi=1n(a (x)|∇u| p−2uxi/1+|∇u| 2)xi=−|u| q−1u, where n≥1, p>1, q>0 are fixed real numbers, and a(x) is a nonnegative measurable locally bounded function. The methods involve the use of capacity theory in connection with special types of test functions and new …

Walk-And-Ride: Factors Influencing Pedestrian Access To Transit, Robert Cervero

Journal of Public Transportation

The predominant means of reaching suburban rail stations in the United States is by private car. Transit villages strive, among other things, to convert larger shares of rail access trips to walk-and-ride, bike-and-ride, and bus-and-ride. Empirical evidence on how built environments influence walk-access to rail transit remains sketchy. In this article, analyses are carried out at two resolutions to address this question. Aggregate data from the San Francisco Bay Area reveal compact, mixed-use settings with minimal obstructions are conducive to walk-and-ride rail patronage. A disaggregate-level analysis of access trips to Washington Metrorail services by residents of Montgomery County, Maryland, shows …

Decision Structuring And Robustness Analysis In Selecting Urban Transit Alternatives, Isam A. Kaysi, Mohamed-Asem U. Abdul-Malak

Journal of Public Transportation

Public policy-makers in many cities worldwide have recognized the need to seek urban passenger transport solutions in the domain of urban transit systems. However, with the availability of many transit technologies and systems, decision-makers need support in identifying the advantages and disadvantages of each system, and in evaluating their suitability for the specific urban context being considered. In this article, the Analytical Hierarchy Process (AHP) is proposed as a decision-support methodology for evaluation of urban transit systems. A hierarchy is proposed for the evaluation of system choice, and an illustrative example is presented. The hierarchy reflects overall objectives of transit …

Njit Highlanders Women's Soccer 2001 Media Guide, New Jersey Institute Of Technology Athletic Department

Soccer - Women's

No abstract provided.

2001 Lindenwood University President’S Report, Dennis Spellmann

State of the University Address (Formerly Annual Reports or President's Reports/)

The 2001 annual report of Lindenwood University.

Smu Research, Volume 8, Office Of Public Affairs

SMU Research Magazine

No abstract provided.

Salmonine Consumption And Competition For Endemic Prey Fishes In Bear Lake, Utah-Idaho, J. R. Ruzycki, Wayne A. Wurtsbaugh, Chris Luecke

Watershed Sciences Faculty Publications

Two principal sport fish—the indigenous Bonneville cutthroat trout Oncorhynchus clarki utah and the introduced lake trout Salvelinus namaycush—are the dominant piscivores in Bear Lake, a 282-km^2 oligotrophic system. These piscivores rely predominantly on four endemic prey fish species that make up a major portion of the unique Bear Lake fish assemblage. We estimated the annual biomass of pelagic and benthic prey fish by using hydroacoustic and trawling techniques. We also estimated the lakewide abundance of piscivores with a multiple mark–recapture survey and used a bioenergetics model to compare the population-level consumption of prey fish with prey fish production. Prey fish …

2000-2001 Faculty Senate Annual Report, University Of South Carolina

Faculty Senate

The primary file includes the 2000-2001 Committee on Academic Responsibility Annual Report. Additional annual reports are attached.

Existence Criteria For Singular Initial Value Problems With Sign Changing Nonlinearities, Ravi P. Agarwal, Donal O'Regan, V. Lakshmikantham

Mathematics and System Engineering Faculty Publications

A general existence theory is presented for initial value problems where our nonlinearity may be singular in its dependent variable and may also change sign.

Measures Of Stream Structure And Function Along A Continuum Of Recovery, Kevin R. Colburn

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Judicial Enforcement Of Species Monitoring Requirements In Forest Plans: Ripeness And Agency Deference, Trent N. Baker

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Making The Housing-Transportation Connection: University Of Montana Student Residential Patterns And Commuting Practices, John H. Harland

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

On The Origins Of Linguistic Structure : Three Models Of Regular And Irregular Past Tense Formation, Benjamin J. Sienicki

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Electron Heating In Atmospheric Pressure Glow Discharges, Robert H. Stark, Karl H. Schoenbach

Bioelectrics Publications

The application of nanosecond voltage pulses to weakly ionized atmospheric pressure plasmas allows heating the electrons without considerably increasing the gas temperature, provided that the duration of the pulses is less than the critical time for the development of glow-to-arc transitions. The shift in the electron energy distribution towards higher energies causes a temporary increase in the ionization rate, and consequently a strong rise in electron density. This increase in electron density is reflected in an increased decay time of the plasma after the pulse application. Experiments in atmospheric pressure air glow discharges with gas temperatures of approximately 2000 K …