Physical Sciences and Mathematics Commons^™

The Crinoid Fauna (Echinodermata: Crinoidea) Of Palau, Charles G. Messing

Marine & Environmental Sciences Faculty Articles

Taxonomic revisions and a recent survey using scuba place the number of shallow-water (< 50 m) crinoid species known from Palau at 22. Five are new records: Clarkcomanthus littoralis, Comanthus suavia, Alloeocomatella pectinifera, Oxycomanthus comanthipinna, and O. exilis. A submersible survey (to 310 m) recovered five additional new records, four of which are the first representatives of their families from Palauan waters:Eudiocrinus venustulus (Eudiocrinidae), Glyptometra sp. (Charitometridae), Cosmiometra belsuchel Messing, n. sp. (Thalassometridae), and Porphyrocrinus verrucosus(Phrynocrinidae), the first stalked crinoid recorded from Palau. Two of the three specimens of the latter have regenerating crowns, suggesting that this species may be subject to substantial predation or an …

Sulfur And Lead Isotope Investigations Of The Carbonate-Hosted Pb-Zn Deposits In The Yahyalı Region, Kayseri, Southern Turkey, Osman Koptagel, Ulvi̇ Ulusoy, Anthony E. Fallick

Turkish Journal of Earth Sciences

Carbonate-hosted Pb-Zn deposits are common in the Yahyalı region (Taurus Belt) with galena the most abundant sulfide mineral. The mean d34S values for Göynük, Celaldağı Desandre, Demircilik, Tekke, Havadan and Suçatı deposits were +0.2±0.5, +9.3±0.8, +10.7±1.3, +10.8±1.3, +11.5±2.4, -4.2±0.4%o, respectively. The mean 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb measurements for the studied deposits were 18.968±0.005, 15.741±0.005 and 39.074±0.016 for Göynük, 18.702±0.006, 15.715±0.006 and 38.883±0.021 for Celaldağı Desandre, 18.618±0.020, 15.727±0.008 and 38.852±0.032 for Demircilik, 18.808±0.017, 15.751±0.028 and 38.983±0.166 for Suçatı. The sulfur isotope systematics imply that sulfur originated from a mixture of different sources for the Göynük and Suçatı deposits, but was probably …

A New Member Of The Family? The Continuum Of Being, Artificial Intelligence, And The Image Of God, Noreen L. Herzfeld

Theology Faculty Publications

Are the scientific and religious definitions of life irreconcilable or do they overlap in significant areas? What is life? Religion seems to imply that there is a qualitative distinction between human beings and the rest of creation; however, there is a strong tradition in Christianity and in Eastern thought that suggests that the natural world also has a relationship with God. Human dominion over other parts of creation exists, but does not obviate this connection, nor give humans a circle unto themselves. The concept of humans being created in the image of God can be used to explain why we …

Control Of Strong-Laser-Field Coupling To Electrons In Solid Targets With Wavelength-Scale Spheres, H. A. Sumeruk, S. Kneip, D. R. Symes, I. V. Churina, A. V. Belolipetski, Thomas D. Donnelly, T. Ditmire

All HMC Faculty Publications and Research

Irradiation of a planar solid by an intense laser pulse leads to fast electron acceleration and hard x-ray production. We have investigated whether this high field production of fast electrons can be controlled by introducing dielectric spheres of well-defined size on the target surface. We find that the presence of spheres with a diameter slightly larger than half the laser wavelength leads to Mie enhancements of the laser field which, accompanied by multipass stochastic heating of the electrons, leads to significantly enhanced hard x-ray yield and temperature.

Estimating Winning Probabilities In Backgammon Races, Andrew M. Ross, Arthur T. Benjamin, Michael Munson '94

All HMC Faculty Publications and Research

In modern backgammon, it is advantageous to know the chances each player has of winning, and to be able to compute the chances without the aid of calculators or pencil and paper. A simple model of backgammon is used to approximate those chances, and a readily computable and sufficiently accurate approximation of that is developed. From there, the model is compared to simulated backgammon games, and the previous approximation is modified to fit the real data.

Construction Of Finite Homomorphic Images, Jane Yoo

Theses Digitization Project

The purpose of this thesis is to construct finite groups as homomorphic images of progenitors.

Document Imaging Application, Ruchi Sukhija

Theses Digitization Project

The purpose of this project was to develop a document imaging application. By scanning the documents into an electronic repository, medical staff will be able to more easily store and locate these records. To make the application user friendly and facilitate staff access to patient medical records, the application is wed-based and uses the Oracle Application Server to implement a multitiered model.

Parallel Remote Interactive Management Model, Faris Nabeeh Zuriekat

Theses Digitization Project

This thesis discusses PRIMM which stands for Parallel Remote Interactive Management Model. PRIMM is a framework for object oriented applications that relies on grid computing. It works as an interface between the remote applications and the parallel computing system. The thesis shows the capabilities that could be achieved from PRIMM architecture.

On-Line Multimedia Management System, Yibin Jiang

Theses Digitization Project

Online Multimedia Management System (OMMS) is a project to provide users to store and share their mutimedia files. The users and administrator can modify and update the multimedia files and database information from a normal web browser. The administrator and users with access have different levels of permission.

Computer Science Graduate Project Management System, Jianyuan Huang

Theses Digitization Project

This project is a development and tracking system for graduate students in the Department of Computer Science of CSUSB. This project will cover front-end web site development, back-end database design and security. This website provides secure access to information about ideas for projects, status on on-going projects, and reports of finished projects using My SQL and Apache Tomcat.

Minica: A Web-Based Certificate Authority, James Patrick Macdonell

Theses Digitization Project

The MiniCA project is proposed and developed to address growing demand for inexpensive access to security features such as privacy, strong authentication, and digital signatures. These features are integral to public-key encryption technologies. The audience for whom the software project is intended includes, technical staff requiring certificates for use in SSL applications (i.e. a secure web-site) at California State University, San Bernardino.

R/3 Implementation Analysis In Various Industries, Paul Alan Rascoe

Theses Digitization Project

The purpose of this project was to analyze six companies in various industries that are currently using systems, applications, and products in data processing (SAP)'s R/3. It outlines the history of SAP and gives background on the companies including what they used before R/3, why they chose R/3, and some of the challenges involved with the changing over to R/3. The companies that were analyzed are Allegran Pharmaceuticals, Pacific Communications, Varian Incorporated, Northop-Grumman, Sempra Energy, and Goodrich. A comparison of the companies is done along with analysis on strategic motivators behind the change to R/3.

Optimized And Integrated Alignment System For Functional Proton Radiosurgery, Fadi Easa Shihadeh

Theses Digitization Project

In this thesis work, a system for proton beam alignment was studied and optimized in many of its functional areas. The resulting system was named Positioning Alignment Control System (PACS). The PACS system is an integrated and efficient system as a result of the work done on it in the course of this thesis work.

Conics In The Hyperbolic Plane, Trent Phillip Naeve

Theses Digitization Project

An affine transformation such as T(P)=Q is a locus of an affine conic. Any affine conic can be produced from this incidence construction. The affine type of conic (ellipse, parabola, hyperbola) is determined by the invariants of T, the determinant and trace of its linear part. The purpose of this thesis is to obtain a corresponding classification in the hyperbolic plane of conics defined by this construction.

Ebay Learning Center System, Jessica Chen

Theses Digitization Project

The project developed eBay Learning Center System (ELCS), a web-based application that provides current and potential eBay users a way to learn about the many functions of the popular online auction and shopping web site and be successful eBay traders. ELCS provides end users with online tutorials, available both in multimedia and text formats, and methods of communicating with system administrators and other users by means of a message box and a discussion forum to facilitate learning and collaborative problem solving. The system employs current technologies such as SQL, HTML, ASP.NET, VBScript, XML, ODBC, and ADO.

Parallelizing A Nondeterministic Optimization Algorithm, Sammy Raymond D'Souza

Theses Digitization Project

This research explores the idea that for certain optimization problems there is a way to parallelize the algorithm such that the parallel efficiency can exceed one hundred percent. Specifically, a parallel compiler, PC, is used to apply shortcutting techniquest to a metaheuristic Ant Colony Optimization (ACO), to solve the well-known Traveling Salesman Problem (TSP) on a cluster running Message Passing Interface (MPI). The results of both serial and parallel execution are compared using test datasets from the TSPLIB.

Stone's Representation Theorem, Ion Radu

Theses Digitization Project

The thesis analyzes some aspects of the theory of distributive lattices, particularly two representation theorems: Birkhoff's representation theorem for finite distributive lattices and Stone's representation theorem for infinite distributive lattices.

Mordell-Weil Theorem And The Rank Of Elliptical Curves, Hazem Khalfallah

Theses Digitization Project

The purpose of this thesis is to give a detailed group theoretic proof of the rank formula in a more general setting. By using the proof of Mordell-Weil theorem, a formula for the rank of the elliptical curves in certain cases over algebraic number fields can be obtained and computable.

Multi-Core Processors And The Future Of Parallelism In Software, Ryan Christopher Youngman

Theses Digitization Project

The purpose of this thesis is to examine multi-core technology. Multi-core architecture provides benefits such as less power consumption, scalability, and improved application performance enabled by thread-level parallelism.

Multi-User Game Development, Cheng-Yu Hung

Theses Digitization Project

This project included the development of a multi-user game that takes place in a 3 dimensional world of the computer science department. Basically, the game allows prospective students to meet existing students and faculty in a virtual open house that takes place within the third floor of Jack Brown Hall. Users can walk around Jack Brown Hall and type text messages to chat with each other.

Tutte Polynomial In Knot Theory, David Alan Petersen

Theses Digitization Project

This thesis reviews the history of knot theory with an emphasis on the diagrammatic approach to studying knots. Also covered are the basic concepts and notions of graph theory and how these two fields are related with an example of a knot diagram and how to associate it to a graph.

An Upperbound On The Ropelength Of Arborescent Links, Larry Andrew Mullins

Theses Digitization Project

This thesis covers improvements on the upperbounds for ropelength of a specific class of algebraic knots.

Web Based Entry Level Mathematics Test, Okbun Baek

Theses Digitization Project

The primary purpose of the project is to develop a web site where students can practice entry level mathematics questions.

Using Permuted States Of Validated Simulation To Analyze Conflict Rates In Optimistic Replication, An-I Andy Wang, Geoffrey H. Kuenning, Peter Reiher

All HMC Faculty Publications and Research

Optimistic replication provides high data availability in the presence of network outages. Although widely deployed, this relaxed consistency model introduces concurrent updates, whose behavior is poorly understood due to the vast state space.

This paper introduces the notion of permuted states to eliminate system states that are redundant and unreachable, which can constitute the majority of states (4069 out of 4096 for four replicas). With the aid of permuted states, we are for the first time able to construct analytical models beyond the two-replica case. By examining the analysis for 2 to 4 replicas, we can demystify the process of …

Seeking Bang-Bang Solutions Of Mixed Immuno-Chemotherapy Of Tumors, Lisette G. De Pillis, K Renee Fister, Weiqing Gu, Craig Collins, Michael Daub, David Gross '08, James Moore '07, Benjamin Preskill '09

All HMC Faculty Publications and Research

It is known that a beneficial cancer treatment approach for a single patient often involves the administration of more than one type of therapy. The question of how best to combine multiple cancer therapies, however, is still open. In this study, we investigate the theoretical interaction of three treatment types (two biological therapies and one chemotherapy) with a growing cancer, and present an analysis of an optimal control strategy for administering all three therapies in combination. In the situations with controls introduced linearly, we find that there are conditions on which the controls exist singularly. Although bang-bang controls (on-off) reflect …

The Application Of Electrospray Ionization Coupled To Ultrahigh Resolution Mass Spectrometry For The Molecular Characterization Of Natural Organic Matter, Rachel L. Sleighter, Patrick G. Hatcher

Chemistry & Biochemistry Faculty Publications

Mass spectrometry has recently played a key role in the understanding of natural organic matter (NOM) by providing molecular-level details about its composition. NOM, a complex assemblage of organic molecules present in natural waters and soils/sediments, has the ability to bind and transport anthropogenic materials. An improved understanding of its composition is crucial in order to understand how pollutants interact with NOM and how NOM cycles through global carbon cycles. In the past, low-resolution (> 3000) mass analyzers have offered some insights into the structure of NOM, but emerging ultrahigh resolution (> 200000) techniques such as electrospray ionization (ESI) coupled …

Modeling Optical And Uv Polarization Of Agnsi. Imprints Of Individual Scattering Regions, René W. Goosmann, C. Martin Gaskell

C. Martin Gaskell Publications

Context. Spectropolarimetry of AGNs is a powerful tool for studying the structure and kinematics of the inner regions of quasars. Aims. We wish to investigate the effects of various AGN scattering region geometries on the polarized flux. Methods. We introduce a new, publicly available Monte Carlo radiative transfer code, stokes, which models polarization induced by scattering off free electrons and dust grains. We model a variety of regions in AGNs. Results. We find that the shape of the funnel of the dusty torus has a significant impact on the polarization efficiency. A compact torus with a steep inner surface scatters …

Electromechanical Behavior In Biological Systems At The Nanoscale, Alexei Gruverman, Brain J. Rodriguez, Sergei Kalinin

Alexei Gruverman Publications

Hierarchical structure of connective and calcified tissues from the macro- to nanoscale level determines the mechanical and biological functionality of biological materials and has been the focus of numerous recent studies. Further progress in this field requires development of microscopic techniques capable of probing materials properties, including local composition, crystallographic orientation, and mechanical properties on the nanometer-length scale. Here, we describe a piezoresponse force microscopy (PFM) approach to high-resolution imaging of biological systems, based on detection of the local piezoelectric response. Samples include human tooth, femoral cartilage, deer antler, and butterfly wing scales. PFM allows differentiation between organic and mineral …

Introduction Scanning Probe Microscopy Techniques For Electrical And Electromechanical Characterization, Sergei Kalinin, Alexei Gruverman

Alexei Gruverman Publications

Progress in modem science is impossible without reliable tools for characterization of structural, physical, and chemical properties of materials and devices at the micro-, nano-, and atomic scale levels. While structural information can be obtained by such established techniques as scanning and transmission electron microscopy, high-resolution examination of local electronic structure, electric potential and chemical functionality is a much more daunting problem. Local electronic properties became accessible after the development of Scanning Tunneling Microscopy by G. Binnig and H. Rohrer in 1981 at IBM Zurich 25 years ago-an invention that earned its authors the Nobel Prize in Physics five years …

Nanoscale Characterization Of Electronic And Electrical Properties Of Iii-Nitrides By Scanning Probe Microscopy, Brian J. Rodriguez, Alexei Gruverman, Robert J. Nemanich

Alexei Gruverman Publications

Recent interest in the technological potential of nitride-based semiconductors has led to the development and commercialization of a wide range of electronic devices. The nanoscale investigation of the electric properties of III-nitride thin films, bulk crystals, and heterostructures is of considerable interest for determining how interfaces, defects, and inversion domain boundaries affect device performance. The pyroelectric nature of wurtzitic III-nitrides is characterized by a spontaneous polarization that exists without the presence of an external field and by a polarization-bound surface charge. Scanning probe-based measurements of surface contact potentials and surface band bending in these materials, which are of crucial importance …