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California Polytechnic State University, San Luis Obispo

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Improved Biquad Structures Using Double-Output Transconductance Blocks For Tunable Continuous-Time Filters, Vladimir I. Prodanov, Micheal M. Green Jul 1997

Improved Biquad Structures Using Double-Output Transconductance Blocks For Tunable Continuous-Time Filters, Vladimir I. Prodanov, Micheal M. Green

Electrical Engineering

A family of gm −C biquad structures is derived. These biquads require only a pair of grounded capacitors and three transconductors. It is shown that a pair of complex zeros can be realized simply by replicating the output stage of the transconductance block, thereby constructing a second output current that is proportional to the original output current. Although these biquad structures are very compact, they allow independent programming of the filter’s center frequency and Q. IC simulations and measurements are presented using a fifth-order tunable filter as an example.

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Hybrid Probabilistic Programs, Alex Dekhtyar, V. S. Subrahmanian Jul 1997

Hybrid Probabilistic Programs, Alex Dekhtyar, V. S. Subrahmanian

Computer Science and Software Engineering

The precise probability of a compound event (e.g. e1 V e2, e1 Ʌ e2) depends upon the known relationships (e.g. independence, mutual exclusion, ignorance of any relationship, etc.) between the primitive events that constitute the compound event. To date, most research on probabilistic logic programming [20, 24, 25, 26] has assumed that we are ignorant of the relationship between primitive events. Likewise, most research in AI (e.g. Bayesian approaches) has assumed that primitive events are independent. In this paper, we propose a hybrid probabilistic logic programming language in which the user can explicitly associate, …

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Model Of Flexural Fatigue Damage Accumulation For Cortical Bone, L. V. Griffin, J. C. Gibeling, R. B. Martin, V. A. Gibson, S. M. Stover Jul 1997

Model Of Flexural Fatigue Damage Accumulation For Cortical Bone, L. V. Griffin, J. C. Gibeling, R. B. Martin, V. A. Gibson, S. M. Stover

Biomedical Engineering

Analytical models that predict modulus degradation in cortical bone subjected to uniaxial fatigue loading in tension and compression are presented. On the basis of experimental observations, damage was modeled as self-limiting for tension but not for compression. These mechanistic uniaxial damage models were then developed into a model for flexural fatigue of cortical bone based on laminated beam theory. The unknown coefficients in the uniaxial damage models were obtained by successfully fitting the resulting equations to uniaxial fatigue data from the literature on human cortical bone in tension and compression. Then, the predictions of the flexural model for the behavior …

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Drip Irrigation Technology: A Resource Management Tool For Farmers, John C. Roberts, Stuart W. Styles Jul 1997

Drip Irrigation Technology: A Resource Management Tool For Farmers, John C. Roberts, Stuart W. Styles

BioResource and Agricultural Engineering

No abstract provided.

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Integrating Research Into The Core Curriculum - A Case Study, Erika Rogers Jun 1997

Integrating Research Into The Core Curriculum - A Case Study, Erika Rogers

Computer Science and Software Engineering

No abstract provided.

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Summer Mustang, June 26, 1997 Jun 1997

Summer Mustang, June 26, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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Fertigation Chemicals, Charles M. Burt Jun 1997

Fertigation Chemicals, Charles M. Burt

BioResource and Agricultural Engineering

When deciding what chemicals to inject, there are numerous considerations to be made. This paper addresses some of the more common factors which should be considered, but which are often overlooked. Because nitrogen fertilizer is injected more widely than any other nutrient, special attention is given to it

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June 20, 1997 Cal Poly Report, Public Affairs Office Jun 1997

June 20, 1997 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

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Summer Mustang, June 19, 1997 Jun 1997

Summer Mustang, June 19, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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A Model For General Periodic Excitation With Random Disturbance And Its Application, Y. K. Zhou, Z. K. Hou, M. F. Dimentberg, Mohammad N. Noori Jun 1997

A Model For General Periodic Excitation With Random Disturbance And Its Application, Y. K. Zhou, Z. K. Hou, M. F. Dimentberg, Mohammad N. Noori

Office of the Dean (CENG) Scholarship

Many vibration problems involve a general periodic excitation such as those of a triangular or rectangular waveform. In practice, the periodic excitation may become disordered due to uncertainties. This paper presents a stochastic model for general periodic excitations with random disturbances which is constructed by introducing random amplitude and phase disturbances to individual terms in the Fourier series of the corresponding deterministic periodic function. Mean square convergence of the random Fourier series are discussed. Monte Carlo simulation of disordered sawtooth, triangular, and quadratic wave forms are illustrated. An application of the excitation is demonstrated by vibration analysis of a single-degree-of-freedom …

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Development Of A Mechatronics Design Studio, Sema E. Alptekin Jun 1997

Development Of A Mechatronics Design Studio, Sema E. Alptekin

Industrial and Manufacturing Engineering

Mechatronics is a combination of mechanics, electronics and information technology intended to raise the intelligence level and flexibility of products and devices. There is a need to develop programs and laboratories in Mechatronics to create an understanding of how new technologies influence the traditional methods of designing products and manufacturing systems. A model "Mechatronics Design Studio" has recently been developed to support the Mechatronics and Manufacturing Automation courses offered at Cal Poly's Industrial and Manufacturing Engineering Department. Laboratory experiments have been developed and several student projects have been completed. In this paper, an overview of the design studio and select …

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June 13, 1997 Cal Poly Report, Public Affairs Office Jun 1997

June 13, 1997 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

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Academic Senate - Meeting Minutes, 6/10/1997, Academic Senate Jun 1997

Academic Senate - Meeting Minutes, 6/10/1997, Academic Senate

Academic Senate Minutes

No abstract provided.

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Design Techniques And Paradigms Toward Design Of Low-Voltage Cmos Analog Circuits, Vladimir I. Prodanov, Michael M. Green Jun 1997

Design Techniques And Paradigms Toward Design Of Low-Voltage Cmos Analog Circuits, Vladimir I. Prodanov, Michael M. Green

Electrical Engineering

Techniques for the design of robust low-voltage CMOS analog circuits are given. It is shown that both Vt-independence and proper alignment between the input and output swings are crucial for effective design of low-voltage circuits.

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June 6, 1997 Cal Poly Report, Public Affairs Office Jun 1997

June 6, 1997 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

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Mustang Daily, June 6, 1997 Jun 1997

Mustang Daily, June 6, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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Mustang Daily, June 5, 1997 Jun 1997

Mustang Daily, June 5, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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Mustang Daily, June 4, 1997 Jun 1997

Mustang Daily, June 4, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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Mustang Daily, June 3, 1997 Jun 1997

Mustang Daily, June 3, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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Academic Senate - Meeting Minutes, 6/3/1997, Academic Senate Jun 1997

Academic Senate - Meeting Minutes, 6/3/1997, Academic Senate

Academic Senate Minutes

No abstract provided.

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Mustang Daily, June 2, 1997 Jun 1997

Mustang Daily, June 2, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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Determination Of Drag From Three-Dimensional Viscous And Inviscid Flowfield Computations, David L. Hunt, Russell M. Cummings, M. B. Giles Jun 1997

Determination Of Drag From Three-Dimensional Viscous And Inviscid Flowfield Computations, David L. Hunt, Russell M. Cummings, M. B. Giles

Aerospace Engineering

A momentum balance approach is used to extract the drag from flowfield computations for wings and wing/bodies in subsonic/transonic flight. The drag is decomposed into vorticity, entropy, and enthalpy components which can be related to the established engineering concepts of induced drag, wave and profile drag, and engine power and efficiency. This decomposition of the drag is useful in formulating techniques for accurately evaluating drag using computational fluid dynamics calculations or experimental data. A formulation for reducing the size of the region of the crossflow plane required for calculating the drag is developed using cut-off parameters for viscosity and entropy. …

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Environmental Engineering Design, Harold M. Cota, Samuel A. Vigil Jun 1997

Environmental Engineering Design, Harold M. Cota, Samuel A. Vigil

Civil and Environmental Engineering

This paper outlines the capstone environmental engineering design course that has been used effectively at California Polytechnic State University. Senior level students work in teams on a multi-media industrial problem. The experience involves literature review, problem formulation, proposal writing, time management, technical and economic analysis and an oral and written presentation of the results. Feedback from alumni and employers has been positive.

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A Note On The Core Of A Monetary Economy, Eric O'N. Fisher Jun 1997

A Note On The Core Of A Monetary Economy, Eric O'N. Fisher

Economics

This note shows that there are monetary equilibria in the model of overlapping generations that are in the core. Some equilibria have positive stocks of outside money in every generation. These equilibria are thus self-enforcing, and introducing money into an economy need not be tantamount to contriving a new social institution designed to enforce sequential contracts.

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The Separation Of Spending From Taxation: Implications For Collective Choices, Michael L. Marlow, William P. Orzechowski Jun 1997

The Separation Of Spending From Taxation: Implications For Collective Choices, Michael L. Marlow, William P. Orzechowski

Economics

Our fiscal process divorces payment from use. While this divorce has led many analysts of government to separate discussion of public expenditures from their funding, or use from payment, we argue that this approach does not provide a useful framework for understanding our public choices. We argue that it is the divorce of payment from use that underlies our fiscal process and, rather than simply 'dismiss out of hand ' study of our fiscal process, it should be an integral part of our study of government. Our framework for describing fiscal institutions indicates how our fiscal process invites rent-seeking because …

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The Role Of Men In Families: Achieving Gender Equity And Supporting Children, Patrice L. Engle Jun 1997

The Role Of Men In Families: Achieving Gender Equity And Supporting Children, Patrice L. Engle

Psychology and Child Development

Fathers and men in families represent one of the most important resources for children’s well-being. Social services, including development interventions in the South, have hitherto failed to take into consideration the major role of men in families, and its effects on women, on children, and on the men themselves.

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Developing Course Materials Using The World Wide Web, Mike O'Kane, Jeffrey D. Armstrong Jun 1997

Developing Course Materials Using The World Wide Web, Mike O'Kane, Jeffrey D. Armstrong

Office of the President Scholarship

The World Wide Web provides a powerful new resource for education in agriculture and the life sciences. This article describes some development tools and strategies employed by the College of Agriculture & Life Sciences at North Carolina State University to help teaching faculty to develop and explore new educational methodologies that take advantage of the Web and other emerging technologies.

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Dietary Iron And Recurrence Of Colorectal Adenomas, Marilyn Tseng, Robert S. Sandler, E. Robert Greenberg, Jack S. Mandel, Robert W. Haile, John A. Baron Jun 1997

Dietary Iron And Recurrence Of Colorectal Adenomas, Marilyn Tseng, Robert S. Sandler, E. Robert Greenberg, Jack S. Mandel, Robert W. Haile, John A. Baron

Kinesiology and Public Health

Previous research suggests that iron acts as a prooxidant to increase the risk of colorectal neoplasia. This study examined effects of dietary intake of iron on colorectal adenoma recurrence using data from an antioxidant clinical trial. All subjects were free of polyps at study entry but had at least one adenoma removed within the 3 months before enrollment. Follow-up colonoseopies were conducted after 1 and 4 years. Patients who developed one or more adenomatous polyps between years 1 and 4 were classified as cases; all others were controls. Dietary iron intake at baseline and at the end of the study …

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May 30, 1997 Cal Poly Report, Public Affairs Office May 1997

May 30, 1997 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

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Mustang Daily, May 30, 1997 May 1997

Mustang Daily, May 30, 1997

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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