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1999

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Articles 751 - 780 of 2348

Full-Text Articles in Physical Sciences and Mathematics

Catalyctic Reduction Of Nitric Oxide By Copper Catalyzed Granular Activated Carbon In The Presence Of Oxygen, Shan Xiao May 1999

Catalyctic Reduction Of Nitric Oxide By Copper Catalyzed Granular Activated Carbon In The Presence Of Oxygen, Shan Xiao

Theses

The catalytic reduction of nitric oxides by solid carbonaceous material consisting primarily of granular activated carbon or (GAC) was studied in a fix bed catalytic reactor in order to develop the technology for removing NO and soot simultaneously from diesel engine exhaust. The catalytic activity and conversion of NO as a function of reaction temperature was evaluated as a function of space velocity. The results show that at lean condition and high gaseous hourly space velocity, vis., 50,000 ~ 80,000, Cu-ZSM-5 does not perform as well with CO and GAC as it does with gaseous hydrocarbons(HC). Plain GAC has low …

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Improved Su320 Nir Camera Image Processing System, Weimin Shi May 1999

Improved Su320 Nir Camera Image Processing System, Weimin Shi

Theses

This paper describes an improved image processing system which is applied in solar observation. In order to get the higher performance in frame grabbing rate, the system is using, PCI Master Bus with on-board memory frame-grabber. From software side, the application program has been modified to reduce the grabbing time, which speeds up the whole process significantly. The paper described them in detail.

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Decision Support System For Forecasting Product And Waste Disposal Over Time, Amit P. Amte May 1999

Decision Support System For Forecasting Product And Waste Disposal Over Time, Amit P. Amte

Theses

A current barrier to the end-of-life product strategies is a lack of knowledge of the quantity and timing of product returns or waste generation. Consequently, a Decision Support System (DSS), to predict the timing and quantity of waste generation is needed. Therefore a web-based system that predicts the rate of product entering the waste-stream has been developed. The system accepts information relating to sales, reliability, storage and disposal behavior. This data is used to simulate the return waste flow. The DSS can be used to simulate the effect of different policies and to provide data for end-of-life and multi-lifecycle strategy …

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Tracking The Trochoid On Safari, Andrew Simoson May 1999

Tracking The Trochoid On Safari, Andrew Simoson

ACMS Conference Proceedings 1999

While on sabbatical in Dar es Salaam in 1997–98, I was tasked to be the department’s seminar director and discovered that a dearth of speakers roam about in east Africa; so I opted to set up a lecture tour for myself to include Zambia, Zimbabwe, and Botswana as well as Tanzania—and spoke about the envelope of curves generated by a series of line segments obtained when two runners attached by an ideal bungee cord (the line segments) proceed about a circular track. Herein we describe life in east Africa and show that those envelopes are trochoids.

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Revolutions In Mathematics (Book Review), Kevin Vander Meulen May 1999

Revolutions In Mathematics (Book Review), Kevin Vander Meulen

ACMS Conference Proceedings 1999

A review of Revolutions in Mathematics, edited by Donald Gillies, Clarendon Press, Oxford 1992.

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Lewis Carroll: Author, Mathematician, And Christian, David L. Neuhouser May 1999

Lewis Carroll: Author, Mathematician, And Christian, David L. Neuhouser

ACMS Conference Proceedings 1999

Although a Christian, an author, and a mathematician, Charles Letwidge Dodgson (better known as Lewis Carroll) wrote very few works in which these three aspects of his person was present. The only examples of him merging these interests are in Sylvie and Bruno and Sylvie and Bruno Concluded. This paper will explore what motivated him to make these works and whether or not they were successful.

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The Deconstruction Of Mathematics, David J. Stucki May 1999

The Deconstruction Of Mathematics, David J. Stucki

ACMS Conference Proceedings 1999

This paper is a criticism of Reuben Hersh's What is Mathematics, Really? and the humanist philosophy of mathematics.

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International Joint Ventures And Technology Transfer In Developing Economies., Arijit Mukherjee Dr. May 1999

International Joint Ventures And Technology Transfer In Developing Economies., Arijit Mukherjee Dr.

Doctoral Theses

Economic development is a continuous process of improvement and upgradation of the existing technological knowledge and their applications. This can be done in more than one way. Countries can acquire superior knowledge through a risky process of self-financed indigenous innovation. This may, however, been proved to be an expensive and time consuming process. Direct and indirect import of technologies are other ways of getting advanced knowledge. Technological change that has been taking place in most of the developing countries is partly the result of import of technologies from the industrially advanced economies. Multinational companies (MNCS) may potentially act as agents …

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Book Review, David J. Stucki May 1999

Book Review, David J. Stucki

ACMS Conference Proceedings 1999

A book review of Fashionable Nonsense: Postmodern Intellectuals' Abuse of Science by Alan Sokal and Jean Bricmont.

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Book Review: Virtual Gods: The Seduction Of Power And Pleasure In Cyberspace, Jonathan R. Senning May 1999

Book Review: Virtual Gods: The Seduction Of Power And Pleasure In Cyberspace, Jonathan R. Senning

ACMS Conference Proceedings 1999

This paper is a review of Virtual Gods: The Seduction of Power and Pleasure in Cyberspace, edited by Tal Brooke, Harvest House Publishers, 1997.

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Teaching Linear Algebra And Abstract Algebra With Two Way Video And Audio, Edward Reinke May 1999

Teaching Linear Algebra And Abstract Algebra With Two Way Video And Audio, Edward Reinke

ACMS Conference Proceedings 1999

An outline of a presentation discussing teaching two different algebra courses long-distance as well as in a classroom.

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A Mathematician At The Science And Theology Book Club, Greg Crow May 1999

A Mathematician At The Science And Theology Book Club, Greg Crow

ACMS Conference Proceedings 1999

This paper is a case study of the insights gained and the contributions made in a weekly Science and Theology Faculty Book Club. The contribution of other group members to the expansion of one’s general understanding of their fields is demonstrated in increased vocabulary, use of existing theoretical models, glimpses of the depth of their disciplines, and in the recognition of the need for humility. The mathematician may contribute by helping to clarify definitions, by applying basic ideas in their own and related fields, and only very rarely by bringing their own research to the table.

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Book Review - The Language Of Mathematics: Making The Invisible Visible By Kieth Devlin, Charles R. Hampton May 1999

Book Review - The Language Of Mathematics: Making The Invisible Visible By Kieth Devlin, Charles R. Hampton

ACMS Conference Proceedings 1999

Charles R. Hampton reviews The Language of Mathematics: Making the Invisible Visible. By Kieth Devlin. W. H. Freeman and Company, 1998

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Determinism, Chaos, And The Meaning Of Randomness, Or Quantum Theory And The Sovereignty Of God, John Wicks May 1999

Determinism, Chaos, And The Meaning Of Randomness, Or Quantum Theory And The Sovereignty Of God, John Wicks

ACMS Conference Proceedings 1999

No abstract provided.

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Book Review: The Number Sense: How The Mind Creates Mathematics By Stanislas Dehaene, Mary Vanderschoot May 1999

Book Review: The Number Sense: How The Mind Creates Mathematics By Stanislas Dehaene, Mary Vanderschoot

ACMS Conference Proceedings 1999

No abstract provided.

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Book Review: The Philosophy Of Mathematics By W.S. Anglin, Richard D. Rockwell May 1999

Book Review: The Philosophy Of Mathematics By W.S. Anglin, Richard D. Rockwell

ACMS Conference Proceedings 1999

No abstract provided.

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Noncommunicative Algebraic Geometry, Dennis S. Keeler May 1999

Noncommunicative Algebraic Geometry, Dennis S. Keeler

ACMS Conference Proceedings 1999

No abstract provided.

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Willing The Will Of God, Harold Heie May 1999

Willing The Will Of God, Harold Heie

ACMS Conference Proceedings 1999

No abstract provided.

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Book Review: An Imaginary Tale: The Story Of √-1 By Paul J. Nahin, Michael O'Leary May 1999

Book Review: An Imaginary Tale: The Story Of √-1 By Paul J. Nahin, Michael O'Leary

ACMS Conference Proceedings 1999

No abstract provided.

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Doubt And Uncertainty - A Book And Idea Review, Richard Laatsch May 1999

Doubt And Uncertainty - A Book And Idea Review, Richard Laatsch

ACMS Conference Proceedings 1999

No abstract provided.

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Hyperbolic Geometry And Poincare's Half-Plane Model, Robert Frank May 1999

Hyperbolic Geometry And Poincare's Half-Plane Model, Robert Frank

ACMS Conference Proceedings 1999

No abstract provided.

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Can Mathematics Be Taught In A Christian Way?, Johan H. De Klerk May 1999

Can Mathematics Be Taught In A Christian Way?, Johan H. De Klerk

ACMS Conference Proceedings 1999

No abstract provided.

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Using Mathematica To Explore Abstract Algebra, Al Hibbard May 1999

Using Mathematica To Explore Abstract Algebra, Al Hibbard

ACMS Conference Proceedings 1999

No abstract provided.

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Book Review: Math: Facing An American Phobia By Marilyn Burns, Stephen L. Brown May 1999

Book Review: Math: Facing An American Phobia By Marilyn Burns, Stephen L. Brown

ACMS Conference Proceedings 1999

No abstract provided.

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On The Solutions Of A Family Of Sextic Thue Equations, Alain Togbe May 1999

On The Solutions Of A Family Of Sextic Thue Equations, Alain Togbe

ACMS Conference Proceedings 1999

No abstract provided.

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Engel Curve Estimation From Budget Data Relating To Short Reference Periods., Suchismita Ghosh Dr. May 1999

Engel Curve Estimation From Budget Data Relating To Short Reference Periods., Suchismita Ghosh Dr.

Doctoral Theses

The main motivation of the present dissertation is the estimation of engel elasticities of certain items of consumption after eliminating the possible effects of seasonal and other short-run fluctuations from household budget data. Indian budget data provided by the National Sample Survey Organization (NSSO), mainly relating to the 38th round (January - December, 1983), has been utilized for the study. Such data generally relate to a moving reference period of 'last 30 days' preceding the date of interview (also referred to as the last month reference period). The use of such a reference period introduces errors in observation in both …

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The Influence Of Heat On The Measurement Of Photocurrent At The Anodic Film Of Nickel Electrode, Hang Chen, Zhi-Yu Jiang May 1999

The Influence Of Heat On The Measurement Of Photocurrent At The Anodic Film Of Nickel Electrode, Hang Chen, Zhi-Yu Jiang

Journal of Electrochemistry

The influence of heat on the measurement of photocurrent for nickel electrode in 1 mol/L NaOH solution was investigated by using the photocurrent, photothermal and thermal current methods. It was found that the appearance of photocurrent in potential region of -0.75~0.20 V (vs. Hg/HgO electrode) was due to the p-type semiconductor properties of Ni(OH)2 film in which is agree with the previous report. In the Ni(OH)2/NiOOH redox potential region, the increase of temperature at the surface of working electrode during irradiation significantly promoted the electrochemical reaction strongly. The photocurrent observed in potential region 0.20~0.57 V is mainly …

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The Influential Factors On The Triboelectrochemical Behaviors Of The Passive Alloys, Dong-Bai Sun, Tao Li, Hong-Ying Yu, De-Jun Yang May 1999

The Influential Factors On The Triboelectrochemical Behaviors Of The Passive Alloys, Dong-Bai Sun, Tao Li, Hong-Ying Yu, De-Jun Yang

Journal of Electrochemistry

The tribocorrosion process of Fe-Cr alloys with different Cr content in H2SO4 solution was investigated. The influence of applied load, friction velocity, Cr content and concentration of H2SO4 in solution on the triboelectrochemical behaviors of the alloys was analyzed. It is shown that applied load and friction velocity have singnificant influence on the tribocurrent density in passive region when friction process occurs on part of the surface of alloy. Increasing the corrosion resistance of alloys or decreasing the aggressive of the solution can reduce the alloy removal velocity.

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A Study On The Cathode Protection Potential Against Pitting Corrosion, Chun-Chun Xu, You-Ping Liu, Xiao-Bo Zhang, Xu-Hui Zhao May 1999

A Study On The Cathode Protection Potential Against Pitting Corrosion, Chun-Chun Xu, You-Ping Liu, Xiao-Bo Zhang, Xu-Hui Zhao

Journal of Electrochemistry

The methods have been developed to determine the protection potential against pitting corrosion. They are based on the theory that the pitting protection potential (Ep) is actually the transition potential of the direction of current between the occluded cell and the external surface (ET). ET lasts from -220 mV to -440 mV (SCE), the lowest of which can be considered as cathode protection potential. The Ep values determined with cyclic potentiodynamic polarization method is included in the ET with above methods.

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Zro2 And Zro2-Y2O3 Coatings Deposited By High Energy Pulse, Wei-Ping Yu, Ye-Dong He, Li-Na Zhang, De-Ren Wang May 1999

Zro2 And Zro2-Y2O3 Coatings Deposited By High Energy Pulse, Wei-Ping Yu, Ye-Dong He, Li-Na Zhang, De-Ren Wang

Journal of Electrochemistry

The basic rule and influence factors on deposition of ZrO2 and ZrO2-Y2O3 coatings by high energy pulse were studied. After the oxidizing experiment in air at 1 000 for 100 h, it was shown that the oxidation resistance of 18-8 stainless steel was marketly enhanced by depositing ZrO2 and ZrO2-Y2O3 coatings. The oxidation resistance was increased about 20 times and the oxide scale spallation resistance was increased about 100 times.

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