Digital Commons Network^™

Mobile Speed Estimation For Broadband Wireless Communications Over Rician Fading Channels, Y. Rosa Zheng, Chengshan Xiao

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, a new algorithm is proposed to estimate mobile speed for broadband wireless communications, which often encounter large number of fading channel taps causing severe intersymbol interference. Different from existing algorithms, which commonly assume that the fading channel coefficients are available for the speed estimators, the proposed algorithm is based on the received signals which contain unknown transmitted data, unknown frequency selective fading channel coefficients possibly including line-of-sight (LOS) components, and random receiver noise. Theoretical analysis is first carried out from the received signals, and a practical algorithm is proposed based on the analytical results. The algorithm employs …

Neural Network Demodulation For An Optical Sensor, Rohit Dua, Steve Eugene Watkins, Donald C. Wunsch

Electrical and Computer Engineering Faculty Research & Creative Works

Methods and systems of neural network demodulation for an optical sensor. An optical sensor may be coupled to a structure and be capable of reflecting a reflected optical signal. A wavelength of the reflected optical signal may be spread based on a strain being applied to the structure. A replication device may receive the reflected optical signal from the optical sensor and produce a plurality of optical signals. A filter may be coupled to the replication device to receive an optical signal from the plurality of optical signals and filter the received optical signal. A detector may receive the filtered …

Structural Study On Ammonia Borane For Hydrogen Storage, William Joseph James, L. Jagat, Q. Cai, William B. Yelon, J. B. Yang

Chemistry Faculty Research & Creative Works

Ammonia borane (BH3NH3) is a promising hydrogen storage material because of its high gravimetric (19.6 wt.% H2) and volumetric hydrogen density with an accompanying moderate decomposition temperature. Previously reported structures determined by using x-ray and neutron diffraction on hydrides show differences in bond lengths and atomic coordination. Here, the crystal structures of fully and half deuterated ammonia borane were investigated as a function of temperature using powder neutron diffraction. the neutron diffraction patterns show a significant difference due to large difference in the scattering length of D and H. It is evident that an order-disorder phase transition occurs around 225 …

An Improved Upfc Control For Oscillation Damping, Jagannathan Sarangapani, Mariesa Crow, Jianjun Guo

Electrical and Computer Engineering Faculty Research & Creative Works

This paper proposes a new control approach for a unified power flow controller (UPFC) for power system oscillation damping. This control is simple to implement, yet is valid over a wide range of operating conditions. It is also effective in the presence of multiple modes of oscillation. The proposed control is implemented in several test systems and is compared against a traditional PI control.

Phonon Confinement Effects In The Raman Spectrum Of Nanodiamond, Sebastian Osswald, Vadym Mochalin, Mickaël Havel, Gleb N. Yushin, Yury G. Gogotsi

Chemistry Faculty Research & Creative Works

Nanodiamonds (ND) exhibit unique properties due to their small size and high surface-to-volume ratio compared to bulk diamonds. A reduction in crystal size also affects ND Raman spectra. The confinement of optical phonons in nanocrystals (<10 nm) results in asymmetrically broadened Raman lines, which are shifted toward lower wavenumbers. The phonon confinement model (PCM) relates the observed changes in the Raman spectra to the crystal size and can be used for size characterization at the nanoscale. While the PCM was successfully applied to a variety of materials including Si and BN, results remained unsatisfactory in the case of ND. In order to improve the agreement between the predictions of the model and experimental Raman spectra of ND, effects such as crystal size distribution, lattice defects, and the energy dispersion of the phonon modes were taken into consideration and incorporated into the PCM. This work has shown that phonon wave vectors from small vibrational domains lead to a broad shoulder peak at ~1250 cm^-1, that is often observed in the Raman spectrum of ND.

The Essentials Of Good Hitting: Commonalities Among Different Hitting Theories, Joseph Lewis Blake

Graduate Research Papers

The purpose of this paper was to define the essentials of good hitting by comparing the commonalities among different hitting theories. To achieve this goal, the following questions were answered. How is hitting performance evaluated? What are the phases of the baseball swing? What are the different philosophies of hitting? What are the psychological aspects of hitting?

Spreadsheet Based Immediate Feedback Formative Assessments For Naïve Conception Recognition And Corrective Accommodation In The Physical Sciences, Jonnie R. Becker

Graduate Research Papers

Providing an education requires continuous assessment which is not feasible with traditional methodologies. This project involved the creation of a set of three formative assessment spreadsheet workbooks that provide instant feedback related to common naive conceptions of matter, change, and energy. Combining validity tested assessment items and constructivist learning theory as a base, multiple choice questions were placed into a series of Excel spreadsheet workbooks that are inter-referenced to instantly report student achievement and reasoning. These spreadsheets provide accurate, timely feedback to the students and the facilitator, as well as an opportunity for students to grow their understandings. This assessment …

Laboratory Schools Annual Report, 2008-2009, Laboratory Schools, Illinois State University

Annual Reports – Laboratory Schools

Illinois State University Laboratory Schools annual report

The Doctrine Of Equivalents In Various Patent Regimes: Does Anybody Have It Right?, Martin J. Adelman

GW Law Faculty Publications & Other Works

The doctrine of equivalents is arguably one of the most important aspects of patent law. The protection a patent confers is meaningless if its scope is determined to be so narrow that trivial changes to a device bring it out of the bounds of the patent. One of the greatest challenges courts and legislatures therefore face in patent law is to create rules for determining patent scope that maintain the protection a patent is meant to confer while still keeping the patent monopoly within reasonable bounds. Despite the general unity in patent laws among developed countries, the difficulty of this …

Semiparametric Prevalence Estimation From A Two-Phase Survey, Denis H. Y. Leung, J Qin

Research Collection School Of Economics

This paper studies a semi-parametric method for estimating the prevalence of a binary outcome using a two-phase survey. The motivation for a two-phase survey is, due to time, money and ethical considerations, it is impossible to carry out comprehensive evaluation on all subjects in a large random sample of the population. Rather, a relatively inexpensive "screening test" is given to all subjects in the random sample and only individuals more likely to have a positive outcome (cases) will be selected for a further "gold standard" test to verify the outcome. Therefore, individuals with verified outcome form a non-random sample from …

The Architecture Of Platforms: A Unified View, Carliss Y. Baldwin, C. Jason Woodard

Research Collection School Of Computing and Information Systems

Product and system designers have long exploited opportunities to create families of complex artifacts by developing and recombining modular components. An especially common design pattern has come to be associated with the concept of a ‘platform’, which we define as a set of stable components that supports variety and evolvability in a system by constraining the linkages among the other components. Our goal in this chapter is to shed light on the relationships between platforms and the systems in which they are embedded, in order to better understand firms and industries where platforms play an important role. We begin by …

An Integrated Probability-Based Approach For Multiple Response Surface Optimization, Okay Isik

Engineering Management & Systems Engineering Theses & Dissertations

Nearly all real life systems have multiple quality characteristics where individual modeling and optimization approaches can not provide a balanced compromising solution. Since performance, cost, schedule, and consistency remain the basics of any design process, design configurations are expected to meet several conflicting requirements at the same time. Correlation between responses and model parameter uncertainty demands extra scrutiny and prevents practitioners from studying responses in isolation. Like any other multi-objective problem, multi-response optimization problem requires trade-offs and compromises, which in turn makes the available algorithms difficult to generalize for all design problems. Although multiple modeling and optimization approaches have been …

Carbon Dioxide Capture From Flue Gases, Mohamed Rashid Al Rashid

Theses

Global warming and climate change are believed to be caused by the greenhouse effect. CO₂ has been regarded as the main contributor to global climate change which directly results in serious environmental problems. Half of the anthropogenic CO₂ emission sources are emitted from the combustion of fossil fuels in industries and power plants worldwide. The absorption behavior of Carbon dioxide from flue gases can be studied using conventional absorber and polymeric hollow fiber membrane contractors. An industrial absorber data was compared with simulated data using hollow fiber membrane contractor using the gPROMs software package. In this analysis, with …

Development And Characterization Of Sulfur Dioxide Gas Analyzer, Samira Mohamed Saeed Mohamed Baomran

Theses

Sulfur dioxide (SO₂) is considered one of the main contaminants in air because of its major contribution to acid rain and due to the major health concerns associated with exposure to high concentrations of SO₂. Hence, there has been a great interest in the determination of SO₂ because of continuous monitoring its impacts on the environment and public health. However, limited reports targeted SO₂ in gas streams.

Therefore, the primary objective of the present work was to develop affordable gas analyzer for continuous monitoring of SO₂ in gas streams. The principle of operation …

Influence Of Iron And Iron-Bearing Minerals On Soil Magnetic Properties, Suzan Marwan Ramadan Shahin

Theses

In this study, soil magnetic properties (magnetic susceptibility/ permeability) due to iron and iron bearing minerals have been evaluated by using MS2B on different percentage levels from pure iron, hematite and magnetite content at different conditions. The study shows that soil magnetic behavior has a strong dependency on grain size, temperature, water content, pH and compositional content.

Also, soil electrical behaviors have been studied due to iron and iron bearing minerals by using Impedance/ gain-phase Analyzer on different soil magnetic inclusion at different percentages. The study has established the strong effect of the magnetic inclusion on the measurements of relative …

Development Of A Gis Database For Water Resources Management In Ajman Emirate, Uae., Mohammad Rehan Yusuf

Theses

The lack of freshwater resources represents a major constraint against the sustainable development in arid and semi-arid regions. Because of the scarcity and randomness nature of rainfall in arid regions, surface water resources are almost absent. Groundwater resources are always under stress and in many cases do not suffice the water demands for different sectors. Desalination plants are widely constructed to substitute for the water shortage. The UAE, including Ajman emirate, is witnessing a rapid development in the industrial, commercial, construction and agricultural fields which has led to a tremendous increase in water demands.

Proper management of the limited water …

Aspects Of The Microbiological Quality And Safety Of Ready-To-Eat Foods In Sharjah Supermarket Stores, Najla Ali Al-Mualla

Theses

Ready to eat foods covers a wide range of pre-processed food products that are readily eaten by consumers without further processing. Recently, there has been considerable increase in the demand of processed and convenience foods that are mildly pre-cooked, rapidly chilled, portioned and distributed for refrigeration prior to reheating and consumption by consumers. However, some of these foods such as, luncheon meals, ready to eat vegetables, fruit salad, spinach salad, and other deli-style meat and poultry products can be a harbor for pathogenic bacteria that are harmful to health when consumed by people especially with weak immune system.

Unfortunately, these …

Water Demand Forecasting In Umm Al Quwain Using The Iwr-Main, Aysha Abdulla Al Mualla

Theses

Water demand forecasting has become an essential component in effective water resources planning and management. It provides valuable trigger in determining the time and the capacity for new water resources development. In the United Arab Emirates, the need for an accurate water demand forecasting becomes particularly important. The reasons for this include, and are not limited to, high temperature throughout the year, high population growth rates, and high development growth.

The main objective of this study is to forecast the water demand in UAQ for the next 25 years using the IWR-MAIN software. Two methods; namely the Constant Use Rate …

The Germination Ecology And Composition Of The Indigenous Seeds Of Cyprus Conglomeratus: A Sand Dune Binder, Sheikha Saeed Amer Al Neyadi

Theses

Cyperus conglomeratus is among few species that tolerate the instability of sand dunes and its low nutrients. This species tolerates grazing animals and sand burial. It is considered as a good fodder for both domestic and wildlife animals. It has the potential to fix sand dunes. In addition, a preliminary observation indicated the presence of high contents of oil in the seeds. Despite the ecological importance of C. conglomeratus, little information is available about germination behaviour and seed composition. The present study assessed the dormancy, germination requirement, tolerance to salinity and drought during germination stage, the impact of dormancy regulation …

Investigation On The Minimization Of Sulfur Dioxide Emissions At Abu Dhabi Gas Liquefaction Company Limited (Adgas) And Its Impact On Ambient Air Quality, Haitham Salmeen Abdulla Babahar

Theses

The processing of sour gases within Abu Dhabi Gas Liquefaction Company (ADGAS) LNG Trains located in Das Island involves sulfur dioxide (SO₂) emissions that mainly result from fuel gas usage to produce steam and electricity, and incomplete recovery of sulfur from acid gases. ADGAS SO₂ emissions affect the ambient air quality in Das Island, and this has the potential to affect the health of the residents of the island. The aim of this work is to explore the feasible technologies to minimize SO₂ emissions from ADGAS, and study the impact of such on the ambient air …

Effects Of Nest Site Environment And Timing Of Breeding On Reproductive Success In Franklin's Gulls (Larus Pipixcan), Emily Anne Berg

Biological Sciences

Offspring performance and phenotype are affected by genotype and environment, which in birds includes yolk resources (part of the embryonic environment). Female colony nesting birds may influence offspring competitive ability in the post-hatching nest site environment by differentially allocating yolk resources to eggs based on nest site characteristics. Offspring performance may also be linked to prenatal allocation of resources, as well as post-natal parental care. Nest site characteristics, including nest size, density, and timing of breeding, influence the behavior (e.g., aggressive, social) and resource acquisition of the parents, as well as provide measureable variation in the postnatal environment. I used …

A Case Study About The Relationship Between Pds And Non Pds High School Variables And Student Outcomes In The State Of New Jersey, Maria A. Poidomani

Seton Hall University Dissertations and Theses (ETDs)

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Beginning Teacher Induction At Three Elementary Schools In China: A Case Study, Juan Miao

Seton Hall University Dissertations and Theses (ETDs)

It is urgent to study teacher induction programs to generate data-rich results that improve current practice and ultimately help beginning teachers become competent teachers and face the challenges in their profession in the 2lS century. The purpose for this study was to explore how beginning teachers at three elementary schools in Baoding, Hebei province, China were inducted The design of this study was non-experimental and descriptive. The researcher conducted this study primarily using qualitative research methods. Information on the three participating schools' profiles and 15 teachers were presented and discussed to help readers understand the context and conditions in which …

Determination Of Partition And Activity Coefficients Using Headspace- Gas Chromatography, Gregory Paul Bullock

Seton Hall University Dissertations and Theses (ETDs)

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Early Childhood Education: The Sustainability Of The Benefits Of Preschool Participation In Abbott Districts, Norma Fernandez

Seton Hall University Dissertations and Theses (ETDs)

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Effects Of A Technology Treatment On Student Scores On The Standardized Grade 8 Proficiency Assessment (Gepa) In New Jersey, Triantafillos Parlapanides

Seton Hall University Dissertations and Theses (ETDs)

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Enabling Structure And Collective Efficacy: A Study Of Teacher Perceptions In Elementary Divisions Of American Schools In Mexico, Dereck H. Rhoads

Seton Hall University Dissertations and Theses (ETDs)

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Father Theodore M. Hesburgh And The University Of Notre Dame's Change In Governance To A Predominantly Lay Board Of Trustees, Mary Patience Hogan

Seton Hall University Dissertations and Theses (ETDs)

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Sensitive Detection Of Novel Effects And Characteristic Signal Structure Of Higher Harmonic Detection In Wavelength Modulation Spectroscopy, Mohammad Amir Khan

Electrical & Computer Engineering Theses & Dissertations

We discuss experimental and theoretical results of absorption features of the oxygen A-band transitions when synchronous detection at higher harmonics using Wavelength Modulation Spectroscopy (WMS) is performed. A key aspect of structure higher harmonic detection is discussed. It is shown that the signal magnitude and spectral locations of turning points and zero crossings of WMS signal demonstrate key signatures of collision dynamics of gaseous specie parameters and lineshape parameters. In addition, it is also shown that these salient features provide sensitive probes for any changes in the gas environment or lineshape parameters. We discuss several advantages and subtle physical effects …

Investigating Engagement, Thinking, And Learning Among Culturally Diverse, Urban Sixth Graders Experiencing An Inquiry-Based Science Curriculum, Contextualized In The Local Environment, Sybil Schantz Kelley

Dissertations and Theses

This mixed-methods study combined pragmatism, sociocultural perspectives, and systems thinking concepts to investigate students' engagement, thinking, and learning in science in an urban, K-8 arts, science, and technology magnet school. A grant-funded school-university partnership supported the implementation of an inquiry-based science curriculum, contextualized in the local environment through field experiences. The researcher worked as co-teacher of 3 sixth-grade science classes and was deeply involved in the daily routines of the school.The purposes of the study were to build a deeper understanding of the complex interactions that take place in an urban science classroom, including challenges related to implementing culturally-relevant instruction; …