Digital Commons Network^™

Design And Implementation Of Dual Database Server And Clients, Asia Ali, Intisar Shaded Chleib, Khalid Tourky Atah

Iraqi Journal of Computers, Communications, Control and Systems Engineering

The aim of this article is to find an efficient method to keep the database of critical tasks correct and update for performing the work of real time processing (such as power or water distributed environment), design and implement dual database server to control access to the database so the client read from one of dual server and update, write to both of them, if one of them fail then the other one must be capable of control and access all the client to its database. When the other server return to work the worked server would be responsible for …

Estimation Of The Number Of Sources By Applying Mdl To The Output Of Quadrature Mirror Filter Bank, M. H., A. H. Miry

Iraqi Journal of Computers, Communications, Control and Systems Engineering

Estimating the number of sources impinging on an array of sensors is a well known and well investigated problem .A common approach for solving this problem is to use an information theoretic criterion, such as Minimum Description Length (MDL) . MDL technique is very important in many application , but its response degrades under low signal-to-noise ratio (SNR) conditions. This paper proposes a new system to estimate the number of sources by applying MDL to the output of the filter bank consisting quadrature mirror filters (QMF) . Some numerical experiments show that the proposed method can estimate the number of …

Image Compression Using Improved Ridgelet Transform, Mohammed Hussien

Iraqi Journal of Computers, Communications, Control and Systems Engineering

The paper describe approach to the image compression using new hybrid Transforms ,namely, the improvement ridgelet transform that has proven to show promising results over ridgelet transform. The hybrid transform based of replacing the wavelet transform with the slantlet transform, the slantlet transform is a discrete wavelet transform with two zero moments and with improved time localization. A comparison was made with compression using ridgelet transform for different images. A high quality image compression has been achieved for natural images. Computer simulation results indicate that the improvement ridgelet transform offers superior and faster compression performance compared to the ridgelet transform …

Intelligent Inertial Navigation System And Global Positioning System Navigator Based On Artificial Neural Network, Ahmed Mudher

Iraqi Journal of Computers, Communications, Control and Systems Engineering

The integration of global positioning system (GPS) and Inertial Navigation System (INS) are continuously gaining interests in many positioning and navigation applications. Both systems have their unique features and shortcomings. Their integration offers systems that overcome each of their drawbacks and maximize each of their benefits. An INS/GPS integration method based on Artificial Neural Networks (ANNs) to fuse INS measurements and GPS measurements has been suggested. It is also provide high performance INS/GPS integration with accurate prediction for position And velocity components during GPS signal absence. Thus the integration of the two systems presents a number of advantages and overcomes …

A Personal Computer-Based Programmer For The 8051/8052 Uv And Flash Rom Based Microcontroller Family, Manaf Sabri

Iraqi Journal of Computers, Communications, Control and Systems Engineering

The 8051/8052 microcontroller family is very popular and is found in a huge number of applications in professional systems and amateur projects . This paper describes the design of programming system for the 8051/8052 UV and Flash ROM based microcontrollers that work in conjunction with an IBM style personal computer. The programmer uses the standard parallel printer port operating in bidirectional mode to interface with the host personal computer . An integral power supply and external step down power transformer provides the programmer with all required operating Voltages. The programmer is controlled by software written in Visual Basic running on …

Designing A Genetic Neural Controller Of Differential Braking System For Vehicle Based On Model Reference, Ahmed Sabah Al-Araji

Iraqi Journal of Computers, Communications, Control and Systems Engineering

In this paper, the structure of the controller is consist s of a Modified Elman Neural Networks MENN model that is learned on-line by using genetic algorithm teachings in order to achieve required yaw rate and reduce lateral velocity in a short period of time to prevent vehicle from sliding out the curvature. By using differential braking system and front wheel steering angle has automatically controlled the vehicle lateral motion when the vehicle rotates the curvatures. The robust feedback neural controller is achieving the excellent transient state output of the system by minimizing the error between the model reference output …

Synthesis And Characterization Of Biodegradable Polyurethanes For Biomedical Application, Changhong Zhang

All Dissertations

This dissertation constitutes the studies about the biomedical materials research of novel polyurethanes. These elastic and degradable polyurethanes exhibited the potential for drug delivery, scaffold fabrication by novel ink-jet printing technology or other biomedical applications. This dissertation includes two parts about two different types of polyurethanes.
In the first part of this dissertation, we studied a polyurethane that was synthesized from methylene di-p-phenyl-diisocyanate (MDI), polycaprolactone diol (PCL-diol) and N, N-bis (2-hydorxyethyl)-2-aminoethane-sulfonic acid (BES). MDI, PCL-diol and BES were polymerized into polyurethane and served as the hard segment, soft segment and chain extender respectively. The effects of the chain extender BES …

Population Growth And Planned Birth Policy, Yigang Zhang

All Dissertations

China's planned birth policy is based on 'population pessimism', which states population growth affects the income level negatively, though the role of population growth in cross-country growth regressions is ambiguous. There are 'population pessimism', 'population optimism', and 'population neutralism'. Also, a new concept 'demographic dividend' was raised in recent years, which states a rise in the rate of economic growth can be induced because of a rising share of working age people in a population while still holding 'population neutralism'. The planned birth policy results in a decreasing fertility rate, which slows down the population growth and changes the age …

Hybrid Bond-Order Potential For Silicon, Suleiman Oloriegbe

All Dissertations

ABSTRACT
A new hybrid bond-order potential for silicon is developed. The functional form of the potential is derived from hybrid of expressions from empirical bond-order formalism and first principles approximations. The total energy is expressed as the sum of attractive, repulsive and promotion energies. By introducing a screening function derived from approximations to first principles expressions, the potential is made long-ranged by allowing covalent interactions beyond the first nearest neighbor shell of atoms in agreement with quantum mechanical descriptions of the bonding in silicon. Environment-dependent promotion energy is introduced that accurately accounts for energetic interactions due to changes in hybridization …

Development Of An Open Loop Fuzzy Logic Urea Dosage Controller For Use With An Scr Equipped Hdd Engine, Theodore R. Adams

Graduate Theses, Dissertations, and Problem Reports (ETD)

Selective Catalytic Reduction (SCR) has been shown to be the most promising exhaust aftertreatment system for reducing oxides of nitrogen in near term in-use applications. SCRs use the ammonia containing compound urea, as a reducing agent. In order to control the urea dosage during transient operation of the engine, sophisticated control strategies are needed. The goal of this study was to design a controller to achieve the maximum NO x emission reduction possible in the transient mode of engine operation, without causing ammonia slip. The development of an open loop, non-sensor based fuzzy logic urea dosage controller is discussed in …

Program-Assisted Analysis Of The Transverse Pressure Capacity Of Block Stoppings For Mine Ventilation Control, Timothy J. Batchler

Graduate Theses, Dissertations, and Problem Reports (ETD)

Previously a new test procedure, based on rigid arching, had been developed to determine the true transverse pressure capacity of mine ventilation block stoppings. Using this test procedure, a parametric study of the design parameters was tested to determine the arching capability in block stoppings. Theoretical assessments of arching and design equations were developed creating design guidelines based on the physical properties of the block stoppings. Based on these design guidelines, a computer program was developed to simulate the transverse pressure capacity of mine ventilation block stoppings. Inputs from users will generate a set of representative scenarios simulating a particular …

Analysis Of Factors Affecting Wireless Communication Systems In Underground Coal Mines, David P. Mcgraw

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since recent disasters in the mining industry in 2006 the push for a reliable communication system has became a high priority. This thesis will discuss each "wireless" communication system available and/or being developed for underground mines as well as the frequencies that will be used for each system's operation.;The second part of the investigation will be on the factors affecting these frequencies as well as possible ways to model these factors analytically. It is important to understand these factors in order to make intelligent conclusions as to what communication systems will perform adequately in an underground mining environment.;The third area …

Characterization Of Nickel-Substituted Hexaaluminate Catalysts, Jason C. Hissam

Graduate Theses, Dissertations, and Problem Reports (ETD)

A characterization study was performed on two series of hexaaluminate catalysts of the form MI(MII)xAl12-x O19-delta; where MI refers to the mirror cation (MI = Ba, Sr, La) and MII to the cation (MII = Ni) substituted into the lattice. The first series was synthesized for comparison of different mirror cations while holding the Ni substitution level constant at x = 0.4. The second series was developed with the same mirror cation of Ba, but varied x, the level of Ni substitution. Experiments were conducted by means of the following characterization techniques: scanning electron microscopy (SEM), unit-cell refinement (UCR), in …

Development Of An Optimized Short-Span Steel Bridge Design Package, Gabor I. Nagy

Graduate Theses, Dissertations, and Problem Reports (ETD)

West Virginia Department of Transportation indicates that a significant number of bridges in West Virginia are structurally deficient or functionally obsolete. One third of the nation's bridges have similar conditions due to the age of the infrastructure and ever increasing traffic demands. The resources available to replace or rehabilitate those structures are finite, hence cost effective means of replacing the inadequate structures is necessary. One of the solutions intended to ease the increasing demands of replacing those structures are standardized bridge plans by providing a cost effective method to save time and resources. Therefore, the focus of this effort is …

Quantification Of Soluble Organic Fraction Measurement Variation In Diesel Particulate Matter Emissions, John Wesley Hardin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Heavy-duty diesel engines (HDDE) are the dominate prime movers of goods and services in the United States (US) and the world today. HDDE will continue to lead the transportation sector in the near term because of its superior fuel economy and performance compared to existing alternatives. However, HDDE produce many harmful emissions constituents that include: hydrocarbons (HC), oxides of nitrogen (NOx), carbon monoxide (CO), and particulate matter (PM). Due to these harmful emissions, the US Environmental Protection Agency (EPA) has been entrusted to enforce the Clean Air Act to limit the amount of emissions that can be produced from these …

Code Comparison Of Methane Hydrate Reservoir Simulators Using Cmg Stars, Manohar Gaddipati

Graduate Theses, Dissertations, and Problem Reports (ETD)

Natural gas is an important energy source contributing to 23% of the total energy consumption in United States. Domestic conventional natural gas production does not keep pace with increase in natural gas demand. Development of new alternatives like natural gas from methane hydrate can play a major role in ensuring adequate future energy supplies in the United States.;Methane hydrates are crystalline solids, very similar to ice, in which non-polar molecules are trapped inside the cages of water molecules. Methane hydrates could be potentially a vast source of energy. It is estimated that the total amount of natural gas trapped inside …

Optimization Of Magnetic Force Microscopy For Retrieval Of Data From An Erased Or Altered Audiotape, Chandar Prasad Palamadai Subramanian

Graduate Theses, Dissertations, and Problem Reports (ETD)

Magnetic force microscopy (MFM) has been used to investigate the potential for retrieving information from an erased or altered audiotape. The audiotape recording process, the reasons for the distortion of signals during the recording process are presented. An in-depth study has been conducted to investigate the effects of MFM operation parameters on the data retrieval process. Most importantly, these include interleave height and tip speed. Interleave height (i.e., the height of the MFM tip above the surface) has been optimized for maximum clarity of MFM images. Tip speed studies have been carried out to optimize the data retrieval time and …

Observations Of The Tapered Element Oscillating Microbalance As Compared To A Gravimetric Method For Particulate Matter Measurement, Gregory Shane Thomas

Graduate Theses, Dissertations, and Problem Reports (ETD)

A direct comparison has been made between a tapered element oscillating microbalance (TEOM) and the traditional gravimetric filter method designed per 40 CFR §1065.145. A repeatability test, consisting of multiple emission tests, was also performed for the TEOM system that shows that the TEOM was a consistent instrument. The TEOM was also tested with and without a diesel particular filter (DPF) during an 8-mode test on a 1997/1998 Kubota 2.2L engine to see if the concentration of the particular matter (PM) flowing through the TEOM has an effect on accuracy. The flow rate was varied to find the optimal setting …

Characterization Of Thermal And Electrical Properties Of Fiber Reinforced Polymer (Frp) Composites, Raja Ram Tipirneni

Graduate Theses, Dissertations, and Problem Reports (ETD)

Thermal conductivity of a polymer composite is a function of resin type, fiber type and architecture, fiber volume fraction, direction of heat flow, and service temperature. Recognizing the thermal responses in Fiber Reinforced Polymer (FRP) composite decks play a critical role in their performance, accurate thermal measurements of FRP decks are essential. A major focus has been placed on measurements of thermal conductivity in through-the thickness direction of a FRP composite.;Current research focus has been on characterization of thermal conductivity in the planar direction (along the direction of the fiber and transverse direction of the fiber) of a composite laminate. …

Functional Characterization Of Hexokinase-Like 1 (Hkl1) From Arabidopsis Thaliana, Abhijit Karve

All Dissertations

Arabidopsis hexokinase1 (AtHXK1) is a moonlighting protein with roles in both glucose signaling and catalysis. In this study, we first cloned and characterized the six HXK related genes from Arabidopsis. Three of the six encoded proteins were shown not to phosphorylate hexoses and thus, are designated as hexokinase-like (HKL) proteins. Though they are only 50% identical to HXK1, the amino acid sequences of HKL1 and HKL2 both have well conserved glucose binding domains and other recognized structural elements. The possible basis for their lack of catalytic activity was further probed by site-directed mutagenesis and ultimately was attributed to a suite …

The Provision Of Spousal Support: Antecedents, Consequences, And Crossover Effects, Jay M. Dorio

USF Tampa Graduate Theses and Dissertations

The present study had four main objectives. First, the relationship between the provision of spousal support and its theoretical antecedents and consequences was assessed as informed by the conservation of resources theory (Hobfoll, 1989). Second, the crossover of physicians' work interference with family conflict on their spouses' family demands (perceived family demands and family hours) was investigated. Next, the mediating role of social support as an explanation for the crossover process was examined using two distinct pathways. Lastly, the fourth objective of the present study was to investigate the relationships described above across multiple time points and using dual-source data …

The Eastern Echo, December 1, 2008, Eastern Michigan University

EMU Student Newspaper: The Normal News & The Eastern Echo

No abstract provided.

Single Female Headed Household Unemployment, Grand Rapids, Mi 2000, Community Research Institute-Johnson Center

Community-Level Maps and Fact-Sheets

No abstract provided.

Understanding And Measuring Bicycling Behavior: A Focus On Travel Time And Route Choice, Jennifer Dill, John Gliebe

Urban Studies and Planning Faculty Publications and Presentations

With rates of obesity, heart disease, and related health problems increasing in the U.S. many policy makers are looking for ways to increase physical activity in everyday life. Using a bicycle instead of a motor vehicle for a portion of everyday travel could help address these problems. This research aims to fill a gap in the existing literature on the effect of different types of infrastructure, such as bicycle lanes or paths, on bicycling. The project used global positioning system (GPS) technology to record where a sample of 164 adults in the Portland, OR region rode their bicycles. Data was …

The Phonology And Morphology Of The Dar Daju Daju Language, Arthur J. Aviles

Theses and Dissertations

A recurring theme among linguists is the need for more languages to be analyzed and more descriptions to be available for a variety of reasons. The main purpose of this thesis is to provide essential information on the Daju Dar Daju language of Chad, Africa that will assist in future language development work among the Daju Dar Daju people as well as to provide additional information for possible future work among related languages.

Very little work has been done on the Daju languages as a whole and to date almost nothing on the Dar Daju Daju. The Dar Daju Daju …

The Professional Development Of Teachers For International Contexts: A Case Study Of Concordia Language Villages' Study Abroad Programs, Michelle L. Thomas

Theses and Dissertations

In the face of globalization, educational institutions the world over have developed institutional learning outcomes that seek to graduate students who are culturally competent. To accomplish this goal, colleges and schools must have a faculty who is prepared to facilitate student growth in this regard or provide the faculty with professional development opportunities to achieve that end.

Concordia Language Villages, an intensive language and culture education program sponsored by Concordia College in Moorhead, Minnesota, is intentional in its mission to prepare young people for responsible citizenship and has professional development opportunities available to personnel in their programs and educators; however, …

Circumventing Congress: How The Federal Courts Opened The Door To Impeaching Criminal Defendants With Prior Convictions, Jeffrey Bellin

Faculty Publications

This Article spotlights the flawed analytical framework at the heart of the federal courts’ approach to one of the most controversial trial practices in American criminal jurisprudence — the admission of prior convictions to impeach the credibility of defendants who testify. As the Article explains, the flawed approach is a byproduct of the courts’ reliance on a five-factor analytical framework to implement the governing legal standard enacted by Congress in Federal Rule of Evidence 609. Tracing the evolution of the fivefactor framework from its roots in pre-Rule 609 case law, the Article demonstrates that the courts’ reinterpretation of the framework …

Single Parent Headed Family Households, Grand Rapids, Mi 2000, Community Research Institute-Johnson Center

Community-Level Maps and Fact-Sheets

No abstract provided.

Median Household Income In 2000, Grand Rapids, Community Research Institute-Johnson Center

Community-Level Maps and Fact-Sheets

No abstract provided.

Civilian Unemployment Rate, Grand Rapids, Mi 2000, Community Research Institute-Johnson Center

Community-Level Maps and Fact-Sheets

No abstract provided.