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Loyola University Chicago

1993

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Universal Wormhole Routing, Ronald I. Greenberg, Hyeong-Cheol Oh Dec 1993

Universal Wormhole Routing, Ronald I. Greenberg, Hyeong-Cheol Oh

Computer Science: Faculty Publications and Other Works

We examine the wormhole routing problem in terms of the "congestion" c and "dilation" d for a set of packet paths. We show, with mild restrictions, that there is a simple randomized algorithm for routing any set of P packets in O(cdη + cLηlog P) time, where L is the number of flits in a packet, and η = min {d,L]; only a constant number of flits are stored in each queue at any time. Using this result, we show that a fat-tree network of area Θ(A) can simulate wormhole routing on any network of comparable area with O(log 3 …


Parallel Algorithms For Single-Layer Channel Routing, Ronald I. Greenberg, Shih-Chuan Hung, Jau-Der Shih Dec 1993

Parallel Algorithms For Single-Layer Channel Routing, Ronald I. Greenberg, Shih-Chuan Hung, Jau-Der Shih

Computer Science: Faculty Publications and Other Works

We provide efficient parallel algorithms for the minimum separation, offset range, and optimal offset problems for single-layer channel routing. We consider all the variations of these problems that have linear-time sequential solutions rather than limiting attention to the ``river-routing'' context, where single-sided connections are disallowed. For the minimum separation problem, we obtain O(lgN) time on a CREW PRAM or O(lgN/lglgN) time on a CRCW PRAM, both with optimal work (processor-time product) of O(N), where N is the number of terminals. For the offset range problem, we obtain the same time and processor bounds as long as only one side of …


New Exactly Solvable Hamiltonians - Shape Invariance And Self-Similarity, David T. Barclay, Ranabir Dutt, Asim Gangopadhyaya, Avinash Khare, A. Pagnamenta, Uday P. Sukhatne Oct 1993

New Exactly Solvable Hamiltonians - Shape Invariance And Self-Similarity, David T. Barclay, Ranabir Dutt, Asim Gangopadhyaya, Avinash Khare, A. Pagnamenta, Uday P. Sukhatne

Physics: Faculty Publications and Other Works

We discuss in some detail the self-similar potentials of Shabat and Spiridonov which are reflectionless and have an infinite number of bound states. We demonstrate that these self-similar potentials are in fact shape invariant potentials within the formalism of supersymmetric quantum mechanics. In particular, using a scaling ansatz for the change of parameters, we obtain a large class of new, reflectionless, shape invariant potentials of which the Shabat-Spiridonov ones are a special case. These new potentials can be viewed as q-deformations of the single soliton solution corresponding to the Rosen-Morse potential. Explicit expressions for the energy eigenvalues, eigenfunctions and transmission …


Semiclassical Approach To Quantum-Mechanical Problems With Broken Supersymmetry, Ranabir Dutt, Asim Gangopadhyaya, Avinash Khare, A. Pagnamenta, Uday P. Sukhatne Sep 1993

Semiclassical Approach To Quantum-Mechanical Problems With Broken Supersymmetry, Ranabir Dutt, Asim Gangopadhyaya, Avinash Khare, A. Pagnamenta, Uday P. Sukhatne

Physics: Faculty Publications and Other Works

The semiclassical WKB approximation method is reexamined in the context of nonrelativistic quantum-mechanical bound-state problems with broken supersymmetry (SUSY). This gives rise to an alternative quantization condition (denoted by BSWKB) which is different from the standard WKB formula and also different from the previously studied supersymmetric (SWKB) formula for unbroken SUSY. It is shown that to leading order in ħ, the BSWKB condition yields exact energy eigenvalues for shape-invariant potentials with broken SUSY (harmonic oscillator, Pöschl-Teller I and II) which are known to be analytically solvable. Further, we show explicitly that the higher-order corrections to these energy eigenvalues, up to …


Ethnic Political Power In A Machine City: Chicago's Poles At Rainbow's End, Tomasz Inglot, John P. Pelissero Jun 1993

Ethnic Political Power In A Machine City: Chicago's Poles At Rainbow's End, Tomasz Inglot, John P. Pelissero

Political Science: Faculty Publications and Other Works

Machine politics in Chicago has been described as a successful example of exchange theory in which political party members received benefits in return for loyalty to the party. In 1988, Erie rejected the rainbow theory of machine politics, arguing that the Irish received the lion's share of political benefits while other white-ethnic groups, such as Poles, were given limited and often symbolic rewards. These authors show that Chicago's Poles were not fully incorporated into the rainbow of groups that benefited from and supported the machine. This led to a pattern of independence in voting and lends considerable support to Erie's …


Feasible Offset And Optimal Offset For Single-Layer Channel Routing, Ronald I. Greenberg, Jau-Der Shih Jun 1993

Feasible Offset And Optimal Offset For Single-Layer Channel Routing, Ronald I. Greenberg, Jau-Der Shih

Computer Science: Faculty Publications and Other Works

The paper provides an efficient method to find all feasible offsets for a given separation in a VLSI channel routing problem in one layer. The prior literature considers this task only for problems with no single-sided nets. When single-sided nets are included, the worst-case solution time increases from Theta(n) to Omega(n^2), where n is the number of nets. But, if the number of columns c is O(n), one can solve the problem in time O(n^{1.5}lg n ), which improves upon a `naive' O(cn) approach. As a corollary of this result, the same time bound suffices to find the optimal offset …


Jimmie Crutchfield’S Baseball Life, James G. Keenan, Sheldon Cohen Apr 1993

Jimmie Crutchfield’S Baseball Life, James G. Keenan, Sheldon Cohen

Classical Studies: Faculty Publications and Other Works

Loyola faculty members in history and classical studies present research on the Negro Leagues in baseball.


Supersymmetry And The Tunneling Problem In An Asymmetric Double Well, Asim Gangopadhyaya, Prasanta K. Panigrahi, Uday P. Sukhatne Apr 1993

Supersymmetry And The Tunneling Problem In An Asymmetric Double Well, Asim Gangopadhyaya, Prasanta K. Panigrahi, Uday P. Sukhatne

Physics: Faculty Publications and Other Works

The techniques of supersymmetric quantum mechanics are applied to the calculation of the energy difference between the ground state and the first excited state of an asymmetric double well. This splitting, originating from the tunneling effect, is computed via a systematic, rapidly converging perturbation expansion. Perturbative calculations to any order can be easily carried out using a logarithmic perturbation theory. Our approach yield substantially better results than alternative widely used semiclassical analyses.


A Systolic Simulation And Transformation System, Ronald I. Greenberg, H.-C. Oh Mar 1993

A Systolic Simulation And Transformation System, Ronald I. Greenberg, H.-C. Oh

Computer Science: Faculty Publications and Other Works

This paper presents a CAD tool, SystSim, to ease the design of systolic systems. Given a high-level, functional description of processors, and a high-level description of their interconnection, SystSim will perform simulations and provide graphical output. SystSim will also perform transformations such as retiming, which eases use of the methodology of Leiserson and Saxe of designing a system with broadcasting and then obtaining a systolic system through retiming.


Isolation Of A Highly Functionalized Troeger’S Base Derivative Via A Novel Reaction, Daniel Becker, Patricia M. Finnegan, Paul W. Collins Mar 1993

Isolation Of A Highly Functionalized Troeger’S Base Derivative Via A Novel Reaction, Daniel Becker, Patricia M. Finnegan, Paul W. Collins

Chemistry: Faculty Publications and Other Works

Heating a solution of methyl 5-chloro-4-[(ethoxyoxoacetyl) amino]-2-methoxybenz-oate, 3 in DMSO gave rise to the formation of the highly substitute


Minimizing Channel Density With Movable Terminals, Ronald I. Greenberg, Jau-Der Shih Mar 1993

Minimizing Channel Density With Movable Terminals, Ronald I. Greenberg, Jau-Der Shih

Computer Science: Faculty Publications and Other Works

We give algorithms to minimize density for channels with terminals that are movable subject to certain constraints. The main cases considered are channels with linear order constraints, channels with linear order constraints and separation constraints, channels with movable modules containing fixed terminals, and channels with movable modules and terminals. In each case, previous results for running time and space are improved by a factor of L/lg n and L , respectively, where L is the channel length and n is the number of terminals.


Dentos 1993, Chicago College Of Dental Surgery Jan 1993

Dentos 1993, Chicago College Of Dental Surgery

Chicago College of Dental Surgery Yearbooks

No abstract provided.


Fresh Woods, And Pastures New: Chorography, Cartography And The Puritan Perspective In "Lycidas", Laura Nilges-Matias Jan 1993

Fresh Woods, And Pastures New: Chorography, Cartography And The Puritan Perspective In "Lycidas", Laura Nilges-Matias

Master's Theses

No abstract provided.


Effects Of Perinatal Cocaine Exposure On Sexual Differentiation In The Rat Brain, Heather L. Maecker Jan 1993

Effects Of Perinatal Cocaine Exposure On Sexual Differentiation In The Rat Brain, Heather L. Maecker

Master's Theses

No abstract provided.


Feminist Pieces, Women's Stories And Pastoral Counseling: Reflections Of And Emerging Pastoral Counselor, Joan W. Kaltsas Jan 1993

Feminist Pieces, Women's Stories And Pastoral Counseling: Reflections Of And Emerging Pastoral Counselor, Joan W. Kaltsas

Master's Theses

No abstract provided.


A Study Of Individual And Group Incentives In Total Quality Management Organizations, Nina Leigh Moll Jan 1993

A Study Of Individual And Group Incentives In Total Quality Management Organizations, Nina Leigh Moll

Master's Theses

No abstract provided.


An Assessment Of Covert Racism In The Attributional Process Toward Interracial Couples, Holly J. Huck Jan 1993

An Assessment Of Covert Racism In The Attributional Process Toward Interracial Couples, Holly J. Huck

Master's Theses

No abstract provided.


A Clay Modified Electrode For Ion-Exchange Voltammetry, Thaddeus S. Wielgos Jan 1993

A Clay Modified Electrode For Ion-Exchange Voltammetry, Thaddeus S. Wielgos

Master's Theses

No abstract provided.


The Mental Research Institute Approach As Applied To School Settings, Paul E. O'Malley Jan 1993

The Mental Research Institute Approach As Applied To School Settings, Paul E. O'Malley

Master's Theses

No abstract provided.


A Neurophysiological Study Of The Auditory Midbrain Of The Goldbish, Zhong-Min Lu Jan 1993

A Neurophysiological Study Of The Auditory Midbrain Of The Goldbish, Zhong-Min Lu

Master's Theses

No abstract provided.


Nmr Study Of Na+-H+ And Na+-Li+ Exchange In Human Erythrocytes, Suilan Mo Jan 1993

Nmr Study Of Na+-H+ And Na+-Li+ Exchange In Human Erythrocytes, Suilan Mo

Master's Theses

No abstract provided.


The Expression And Presentation Of Depressive Symptomatology In Adult Chinese As A Function Of Level Of Ethnocultural Identification, Fung Chu Ho Jan 1993

The Expression And Presentation Of Depressive Symptomatology In Adult Chinese As A Function Of Level Of Ethnocultural Identification, Fung Chu Ho

Master's Theses

No abstract provided.


The Longitudinal Effects Of Perceptions Of Pubertal Timing And Relationship With Parents On Eating Problems In Adolescent Girls, Amy E. Swarr Jan 1993

The Longitudinal Effects Of Perceptions Of Pubertal Timing And Relationship With Parents On Eating Problems In Adolescent Girls, Amy E. Swarr

Master's Theses

No abstract provided.


Relationship Of Type A To Illness, Sigurlina Davidsdottir Jan 1993

Relationship Of Type A To Illness, Sigurlina Davidsdottir

Master's Theses

No abstract provided.


Social Support And Positive Life Experience: The Relationship Of Social Support To Well-Being, Perceived Control, And Positive Life Events, Michael P. Meehan Jan 1993

Social Support And Positive Life Experience: The Relationship Of Social Support To Well-Being, Perceived Control, And Positive Life Events, Michael P. Meehan

Master's Theses

No abstract provided.


Understanding Of Spirituality: Implications For Psychotherapy, Mary Lyne Mack Jan 1993

Understanding Of Spirituality: Implications For Psychotherapy, Mary Lyne Mack

Master's Theses

No abstract provided.


Correlation Of 17o Chemical Shifts Of Chromium Carbene Complexes With Moss' Mxy Reacitvity Parameter, Shuyuan Liao Jan 1993

Correlation Of 17o Chemical Shifts Of Chromium Carbene Complexes With Moss' Mxy Reacitvity Parameter, Shuyuan Liao

Master's Theses

No abstract provided.


Self Psychology As A Theoretical Model For Intervention With Adolescent Mothers, Breda M. O'Connell Doak Jan 1993

Self Psychology As A Theoretical Model For Intervention With Adolescent Mothers, Breda M. O'Connell Doak

Master's Theses

No abstract provided.


An Assessment Of The Nature And Correlates Of Job Satisfaction For Employees Of Illinois' Community Integrated Living Arrangements Program, Marie Anne Mackay Jan 1993

An Assessment Of The Nature And Correlates Of Job Satisfaction For Employees Of Illinois' Community Integrated Living Arrangements Program, Marie Anne Mackay

Master's Theses

No abstract provided.


Self Psychology As A Theoretical Model For Intervention With Adolescent Mothers, Doak Breda M. O'Connell Jan 1993

Self Psychology As A Theoretical Model For Intervention With Adolescent Mothers, Doak Breda M. O'Connell

Master's Theses

No abstract provided.