Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 7 of 7
Full-Text Articles in Physical Sciences and Mathematics
Applications Of The Wavelet Transform To Signal Analysis, Jie Chen '93
Applications Of The Wavelet Transform To Signal Analysis, Jie Chen '93
Honors Projects
Like the Fourier Transform, the Wavelet Transform decomposes signals as a superposition of simple units from which the original signals can be reconstructed. The Fourier Transform decomposes signals into sine and cosine functions of different frequencies, while the Wavelet Transform decomposes signals into wavelets. Since the Fourier Transform is a global integration transform and there is no time factor in it, it cannot effectively analyze nonstationary signals whose statistical properties change with time. In order to analyze nonstationary signals, we need to decompose signals into units that are localized in both the time and frequency domains. Using the Wavelet Transform …
The State Of Computer Science Facilities Of Schools Across The United States That Are Comparable To Illinois Wesleyan University, Sarah A. Bartz '93
The State Of Computer Science Facilities Of Schools Across The United States That Are Comparable To Illinois Wesleyan University, Sarah A. Bartz '93
Honors Projects
The purpose of this study is to compare Illinois Wesleyan's academic computer facilities with those at other comparable U.S. colleges and universities. This study also investigates factors affecting these facilities such as the methods other institutions use to deal with and plan for the constantly changing computer world. To obtain this information a survey was mailed to over 250 institutions across the U.S. that were considered comparable to IWU. These institutions include the Associated Colleges of the Midwest, the Oberlin Group, and some of the top colleges and universities in the U.S. as ranked in U.S. News and World Report's …
Multisurface Method Of Pattern Separation, Jennifer L. Jancik
Multisurface Method Of Pattern Separation, Jennifer L. Jancik
Honors Projects
The recognition and separation of patterns is becoming increasingly important in modern applications. For example, it is currently being used at the University of Wisconsin Hospitals to aid in the diagnosis of breast cancer.
Photochemistry Of Nitrous Acid And Nitrite Ion, Kathryn E. Shanks '93
Photochemistry Of Nitrous Acid And Nitrite Ion, Kathryn E. Shanks '93
Honors Projects
Research is currently underway to elucidate the photochemical decomposition mechanism of nitrous acid and nitrite ion in aqueous and non-aqueous media. The quantum yield of the photochemical disappearance of nitrous acid and nitrite, as a function of pH and nitrous acid/nitrite ion concentration ratios, was examined. Spectroscopic studies have been done with nitrite ion in various aprotic organic solvents. Similar work has been started with molecular nitrous acid that was produced in aqueous solution and then extracted into organic solvents. These organic solvents were employed in order to study the quantum yield with respect to NO2- and HONO without the …
A Novel Technique For Studying The Shear Elastic Properties Of Weak Solids, Jason A. Payne '93
A Novel Technique For Studying The Shear Elastic Properties Of Weak Solids, Jason A. Payne '93
Honors Projects
We have developed a simple, inexpensive, and precise technique to measure the shear elastic modulus of weak solids using electromagnetic and optical tools. This technique can be easily adapted to measure the viscosity of a liquid also. A Helmholtz pair was used to produce a torque on a permanent magnet mounted on the smaller of two concentric cylinders, coupled by the material to be studied. The torque was controlled precisely and measured accurately in terms of the current flowing through the coils of the Helmholtz pair. An optical lever was employed to measure the angular displacement of the inner cylinder …
A Lattice Gas Approach To The Structure And Dynamics Of Electrorheological Fluids, Jie Chen '93
A Lattice Gas Approach To The Structure And Dynamics Of Electrorheological Fluids, Jie Chen '93
Honors Projects
Electrorheological fluids consist of a colloidal suspension of dielectric particles in a continuous fluid of smaller dielectric constant. Molecular dynamics simulations of these fluids in an applied electric field have recently been shown to produce percolated, columnar structures. No systematic attempt has been made so far to simultaneously include the effects of temperature and the viscous drag due to the continuous fluid. We propose a dipolar lattice gas model for electrorheological fluids and study the resulting structures and dynamics. We attempt to incorporate the effect of the viscosity of the continuous medium by a dynamic ansatz that determines the range …
Computer Program: General University Requirements Package, Abhishek Kejriwal '93
Computer Program: General University Requirements Package, Abhishek Kejriwal '93
Honors Projects
The objective of my research project was to write a computer program in Turbo Pascal which would determine how many general university requirements a student has completed and what requirements he or she needs to complete in order to graduate. There are six degrees offered at Illinois Wesleyan University. They are: BA (Bachelor of Arts); BS (Bachelor of Science); BFA (Bachelor of Fine Arts); BSN (Bachelor of Science in Nursing); BM (Bachelor of Music) and BME (Bachelor of Music Education). There is a different set of criteria to be met for the completion of each of these degrees. The program …