Physical Sciences and Mathematics Commons^™

On The Developement Of An Optical Character Recognition(Ocr) System For Printed Bangla Script., Umapada Pal Dr.

Doctoral Theses

This thesis concerns OCR development of machine printed text in an Indian lan- guage, Bangla (Bengali) which is the fourthmost popular language in the world and the secondmost popular language in India.1.1 Optical Character Recognition Optical Character Recognition (OCR) is a process of automatic computer recog- nition of characters in optically scanned and digitized pages of text. OCR is ene of the most fascinating and challenging areas of pattern recognition with various practical applications. It can contribute tremendously to the advancement of an automation process and can improve the interface between man and machine in many applications, including office automation …

New Semiregular Divisible Difference Sets, James A. Davis

Department of Math & Statistics Faculty Publications

We modify and generalize the construction by McFarland (1973) in two different ways to construct new semiregular divisible difference sets (DDSs) with λ₁≠0. The parameters of the DDS fall into a family of parameters found in Jungnickel (1982), where his construction is for divisible designs. The final section uses the idea of a K-matrix to find DDSs with a nonelementary abelian forbidden subgroup.

Habitat Conservation Plan For Utah Prairie Dogs In Iron County, Utah, Iron County Commission, Utah Division Of Wildlife Resources

All U.S. Government Documents (Utah Regional Depository)

The Utah prairie dog is a federally threatened species that occurs only in southwestern Utah. A large proportion (65%) of the total population of Utah prairie dogs occurs in Iron County, and a high percentage (86%) of those (2,456/2,843 in 1997) occur on privately owned lands. Population growth in Iron County has averaged more than 6% over the last five years, and is expected to continue at least at the same pace, and possibly as high as 10% (Colgan 1997). The increase in both residential and commercial development in Iron County has been the greatest in Cedar City, but has …

Routes To Self-Assembling Stable Photonic Band-Gap Phases In Emulsions Of Chiral Nematics With Isotropic Fluids, Chien-Yueh Huang, Jonathan J. Stott, Rolfe G. Petschek

Faculty Scholarship

Blue phases are stable phases with crystalline packing of interwoven topological defects in chiral nematic liquid crystals. We argue that chiral nematics with appropriate surfactants are likely to form blue phases for a wide range of parameters. We derive the transition curve for stable emulsified blue phases and find that the required low surface tension is within the accessible range of surfactants. These emulsified blue phases provide possible routes to photonic band-gap materials.

First Observation Of The Cabibbo Suppressed Decay B+ → D̅0K+, M. Athanas, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We have observed the decay B⁺ → D̅⁰K⁺, using 3.3 X 10⁶ BB̅ pairs collected with the CLEO II detector at the Cornell Electron Storage Ring. We find the ratio of branching fractions R ≡ Ɓ(B⁺ → D̅⁰K⁺)/Ɓ(B⁺ →D̅⁰π⁺) = 0.055 ± 0.014 ± 0.005.

Multiple Media Correlation: Theory And Applications, Charles B. Owen

Dartmouth College Ph.D Dissertations

This thesis introduces multiple media correlation, a new technology for the automatic alignment of multiple media objects such as text, audio, and video. This research began with the question: what can be learned when multiple multimedia components are analyzed simultaneously? Most ongoing research in computational multimedia has focused on queries, indexing, and retrieval within a single media type. Video is compressed and searched independently of audio, text is indexed without regard to temporal relationships it may have to other media data. Multiple media correlation provides a framework for locating and exploiting correlations between multiple, potentially heterogeneous, media streams. The goal …

Fine Tuning Interface Relaxation Methods For Elliptic Differential Equations, John R. Rice, P. Tsompanopoulou, E. Vavalis

Department of Computer Science Technical Reports

No abstract provided.

Representations, Approximations, And Algorithms For Mathematical Speech Processing, Laura R. Suzuki

Theses and Dissertations

Representing speech signals such that specific characteristics of speech are included is essential in many Air Force and DoD signal processing applications. A mathematical construct called a frame is presented which captures the important time-varying characteristic of speech. Roughly speaking, frames generalize the idea of an orthogonal basis in a Hilbert space, Specific spaces applicable to speech are L₂(R) and the Hardy spaces H_p(D) for p> 1 where D is the unit disk in the complex plane. Results are given for representations in the Hardy spaces involving Carleson's inequalities (and its extensions), …

Interleukin (Il)-1 Receptor-Associated Kinase (Irak) Requirement For Optimal Induction Of Multiple Il-1 Signaling Pathways And Il-6 Production, Palanisamy Kanakaraj, Peter H. Schafer, Druie E. Cavender, Ying Wu, Karen Ngo, Patrick F. Grealish, Scott A. Wadsworth, Per A. Peterson, John Siekierka, Crafford A. Harris, Wai Ping Fung-Leung

Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works

Interleukin (IL)-1 is a proinflammatory cytokine with pleiotropic effects in inflammation. IL-1 binding to its receptor triggers a cascade of signaling events, including activation of the stress-activated mitogen- activated protein (MAP) kinases, c-Jun NH2-terminal kinase (JNK) and p38 MAP kinase, as well as transcription factor nuclear factor κB (NF-κB). IL-1 signaling results in cellular responses through induction of inflammatory gene products such as IL-6. One of the earliest events in IL-1 signaling is the rapid interaction of IL-1 receptor-associated kinases, IRAK and IRAK-2, with the receptor complex. The relative roles of IRAK and IRAK-2 in IL-1 signaling pathways and subsequent …

Solute-Solvent Pair Distribution Functions In Highly Asymmetric Additive Hard Sphere Mixtures, Douglas Henderson, Kwong-Yu Chan

Faculty Publications

Contact values for the solute-solvent pair distribution function in an additive hard sphere mixture, as computed from the Henderson-Chan (HC) formulas, are compared with the recent Monte Carlo (MC) data and formula of Matyushov and Ladanyi (ML) [J. Chem. Phys. 107, 5815 (1997)]. The agreement is found to be excellent. The negative finding of ML is due to a misprint in one of the HC publications. We find the HC formula to be superior to the ML formula when compared to our MC data [Mol. Phys. 91, 1137 (1997)] for the case where the ratio of diameters is large and …

Reactions Of Oxygen Atoms With Van Der Waals Complexes: The Effect Of Complex Formation On The Internal Energy Distribution In The Products, A B. Mccoy, Michael W. Lufaso, M Veneziani, S Atrill, R Naaman

Chemistry Faculty Research and Scholarship

Reactions of atomic oxygen with complexes containing HCl are investigated and the OH product state distributions are compared to those observed for the corresponding reactions of HCl monomers. In previous studies of reactions of O(3P) with HCl and hydrocarbon complexes, rotationally colder OH product state distributions were observed, when compared to the corresponding reactions of monomers. In contrast, we find that reactions of O(1D) with HCl clusters yield OH rotational distributions that are unaffected by the incorporation of HCl into a van der Waals complex. Quasiclassical trajectories are run on collisions of oxygen with HCl and Ar⋯HCl at 1 eV …

The Influence Of Enhanced Surface Magnetism On Finite-Size Scaling, C. Waldfried, T. Mcavoy, D. Welipitiya, Peter A. Dowben, Elio Vescovo

Peter Dowben Publications

The thickness-dependent spin-polarized electronic structure of strained ultrathin and thin films of Gd has been investigated. The surface magnetic structure dominates the magnetic ordering of the ultrathin Gd films. With decreasing thickness some bulk bands exhibit increasingly more "passive" magnetic behavior. These bulk bands resemble a paramagnet over an increasing volume of the bulk Brillouin zone with decreasing film thickness.

Absolute Triply Differential (E, 2e) Cross Sections For He In The Intermediate Energy Region With Comparison To Theory, J. Röder, H. Ehrhardt, Cheng Pan, Anthony F. Starace, Igor Bray, Dmitry V. Fursa

Anthony F. Starace Publications

Absolute triply differential (e, 2e) cross section measurements are presented for He at incident energies E₀ = 32.6, 44.6, 64.6, and 104.6 eV with equal energy sharing and the θ₁₂ = π configuration. Results of distorted partial-wave calculations agree with the measurements; those of convergent close-coupling calculations agree with the relative angular distributions, and with absolute values after rescaling by consideration of the singly differential cross section.

H2 Formation On Interstellar Grains In Different Physical Regimes, Gianfranco Vidali, Ofer Biham, Itay Furman, N. Katz, Valerio Pirronello

Physics - All Scholarship

An analysis of the kinetics of H2 formation on interstellar dust grains is presented using rate equations. It is shown that semi-empirical expressions that appeared in the literature represent two different physical regimes. In particular, it is shown that the expression given by Hollenbach, Werner and Salpeter [ApJ, 163, 165 (1971)] applies when high flux, or high mobility, of H atoms on the surface of a grain, makes it very unlikely that H atoms evaporate before they meet each other and recombine. The expression of Pirronello et al.\ [ApJ, 483, L131 (1997)] -- deduced on the basis of accurate measurements …

Pion-Pion Scattering In Two Dimensions, Joseph Schechter, D. Delphenich, S. Vaidya

Physics - All Scholarship

Massive two-flavor QED_2 is known to have many similarities to the two-flavor QCD_4. Here we compare the \pi-\pi scattering amplitudes (actually an analog process in QED_2) of the two theories. The QED_2 amplitude is computed from the bosonized version of the model while the QCD_4 amplitude is computed from an effective low energy chiral Lagrangian. A number of interesting features are noted. For example, the contribution of the two-dimensional Wess-Zumino-Witten (WZW) term in QED_2 is structurally identical to the vector meson exchange contribution in QCD_4. Also it is shown that the QED_2 amplitude computed at tree level is a reasonable …

Public Issues In Parks And Recreation Activity In The 105th Congress, Barry S. Tindall

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

3 pages.

The New Challenge Of Outdoor Recreation, Roz Mcclellan

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

5 pages.

Outdoor Recreation And Water Development: The National Recreation Lakes Study, Bruce R. Brown

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

12 pages.

Recreation Management By The Blm: A Local Perspective, Ann Morgan

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

10 pages.

One State’S Response To Outdoor Recreation Pressures, Laurie Mathews

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

5 pages.

Steps Toward Determination Of The Size And Structure Of The Broad-Line Region In Active Galactic Nuclei. Xiv. Intensive Optical Spectrophotometric Observations Of Ngc 7469, S.J. Collier, Keith Horne, Shai Kaspi, Hagai Netzer, Bradley M. Peterson, I. Wanders, T. Alexander, R. Bertram, A. Comastri, C. Martin Gaskell, Yu. F. Malkov, D. Maoz, M. Mignoli, Richard William Pogge, V.I. Pronik, S.G. Sergeev, Stephanie A. Snedden, G.M. Stirpe, N.G. Bochkarev, A.N. Burenkov, A.I. Shapovalova, R.M. Wagner

C. Martin Gaskell Publications

We present results of an intensive 2 month campaign of ground-based spectrophotometric monitoring of the Seyfert 1 galaxy NGC 7469, with a temporal resolution [approximately less than]1 day. The broad Hα and Hβ emission lines respond to ~35% ultraviolet continuum variations with an amplitude of ~10% and time delays of 5.6±1.3 days and 5.4±0.8 days, respectively. We interpret this as evidence of variable Balmer line gas ~5-6 light days from the central source in this object, widely believed to be a supermassive black hole. The virial mass of the central source implied by line widths and time delays is ~10 …

Response: Drawbacks To The Teaming With Wildlife Proposal [Outline], David Secunda

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

4 pages.

Conflict Resolution: A Field Perspective, Ev Elmendorf

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

6 pages.

A Mountain Bicycling Perspective On User Group Conflict, Martha Roskowski

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

11 pages.

Contains 1 page of references.

Market Solutions To Public Recreation Finance: Creating User-Supported Parks, Donald R. Leal

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

11 pages.

Contains 1 page of references.

Market Solutions To Public Recreation Finance: The Texas State Parks Example, Donald R. Leal

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

11 pages.

Contains 1 page of references.

Fish And Wildlife Funding—Past And Future [Abstract], R. Max Peterson

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

1 page.

Tourism, Recreation, And The Fate Of Local Communities: A Mixed Bag, Hal K. Rothman

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

14 pages.

Contains 6 pages of references.

Conflict Among User Groups: An Overview Of Major Issues And Opportunities, Mark W. Brunson

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

14 pages.

Contains 2 pages of references.

Field-Level Conflict Management In Outdoor Recreation, James B. Webb

Outdoor Recreation: Promise and Peril in the New West (Summer Conference, June 8-10)

7 pages.