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Rochester Institute of Technology

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Articles 11221 - 11250 of 13413

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R.I.T. News & Events - January 15, 1981, University News Services, Rochester Institute Of Technology Jan 1981

R.I.T. News & Events - January 15, 1981, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


R.I.T. News & Events - January 8, 1981, University News Services, Rochester Institute Of Technology Jan 1981

R.I.T. News & Events - January 8, 1981, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


1981-1982 Undergraduate Bulletin, Rochester Institute Of Technology Jan 1981

1981-1982 Undergraduate Bulletin, Rochester Institute Of Technology

RIT Digital Archives

No abstract provided.


Stability Of Time-Delay Systems, T. Lee, Sohail Dianat Jan 1981

Stability Of Time-Delay Systems, T. Lee, Sohail Dianat

Articles

This paper gives necessary and sufficient conditions for the stability of time-delay systems of the formdot{x}(t)=A_{1}x(t)+A_{2}x(t-h). These new conditions are derived by Lyapunov's direct method through systematic construction of the corresponding "energy" function. This function is known to exist, if a solutionP_{1}(0)of the algebraic nonlinear matrix equationA_{2} =e^{[A_{1}+P_{1}(0)]h}P_{1}(0)can be determined (Refer to PDF file for exact formulas).


The Study Of Factors That Affect Cell Depth During Etching In Direct Transfer Gravure, Somchai Sringkarrinkul Jan 1981

The Study Of Factors That Affect Cell Depth During Etching In Direct Transfer Gravure, Somchai Sringkarrinkul

Theses

This thesis is to study the four main factors which affect cell depth in copper cylinder etching in direct transfer gravure, and using ferric chloride as an etchant. The multivariate regression method was used to analyze the sample responses (cell depth) of nine different treatments of an etched-screened-tone scale . The regression equations for predicting cell depths from the four variable factors were calculated and the optimum condition which would give the best tonal gradation was predicted. Also the factors which cause uneven cell depth were detected.


The Comparison Of Densitometric Measurement With Gravimetric Measurement Of Wet-On-Wet Ink Trapping, Kongsak Lawphongpanich Jan 1981

The Comparison Of Densitometric Measurement With Gravimetric Measurement Of Wet-On-Wet Ink Trapping, Kongsak Lawphongpanich

Theses

Densitometric and gravimetric methods are employed to measure the percent of ink trapped in a wet-on-wet transfer. This study seeks to discover the relationship of the two methods and if there is a significant difference between the percent gravimetric and percent apparent trapping. An IGT Printability tester (Model-A2) with two printing discs is used to apply ink onto paper. When using the gravimetric method the amount of ink on the disc and ink transferred onto paper are weighed with an analytical balance. The author then calculates the percent ink trapping. When using the densitometric methods densities are measured by polarizing …


Error Of Photometric Dot Area Measurement Due To Arbitrary Placement Of Halftone Image Relative To A Round Measuring Aperture, Franz Sigg Jan 1981

Error Of Photometric Dot Area Measurement Due To Arbitrary Placement Of Halftone Image Relative To A Round Measuring Aperture, Franz Sigg

Theses

Not Included


An Empirical Approach To The Determination Of The Optimum Mask Characteristics Required For Improved Color Reproduction In Direct-Screen Photomechanical Processes, Ben-Shan Cheng Jan 1981

An Empirical Approach To The Determination Of The Optimum Mask Characteristics Required For Improved Color Reproduction In Direct-Screen Photomechanical Processes, Ben-Shan Cheng

Theses

Not Included


A New Correlation For Heat Transfer During Flow Boiling, Bhabesh K. Thakur Jan 1981

A New Correlation For Heat Transfer During Flow Boiling, Bhabesh K. Thakur

Theses

This thesis is concerned with an investigation carried out to establish a new correlation for the prediction of the heat transfer coefficient during flow boiling through tubes, vertical and horizontal flows, for water and organic fluids (including refrigerants). An additive mechanism of convective and boiling heat transfer has been formulated to give the net heat transfer during flow boiling. The correlation employs three dimensionless parameters: the Convection number, the Boiling number and the Froude number. The correlation has been tested with the data (over 500) from twelve experimental cases of six investigators and the mean deviation from the measured values …


For The Table, Donald Stuart Jan 1981

For The Table, Donald Stuart

Theses

Not listed.


The Use Of The Spline Function In Computer-Aided Type Design, Kathleen Barry Albertini Jan 1981

The Use Of The Spline Function In Computer-Aided Type Design, Kathleen Barry Albertini

Theses

The traditional type designer works with pen, in and paper. The characters that he designs go through many changes before the whole font is finalized and set in the printing medium. Further alterations to the font may occur after he prints and evaluates a sample piece of text. Computer-aided type design presents the type designer with a new design tool. Computers have been used in the printing industry for typesetting; the automation of type design is a logical next step. Freeing the designer from the repetitive tasks of the design cycle is one obvious advantage cf using computers. But computer-aided …


Three Dimensional Resonant Vibrations And Stresses In Turbine Blade Groups, Patrick J. Kline Jan 1981

Three Dimensional Resonant Vibrations And Stresses In Turbine Blade Groups, Patrick J. Kline

Theses

This thesis describes an efficient procedure for calculating three dimensional resonant vibrations and stresses in intermediate and high pressure turbine blade groups. This procedure is capable of calculating all the natural frequencies, mode shapes, and bending stresses in the tangential, axial, and coupled modes of vibration. Simple beam theory is applied to develop a dynamic stiffness matrix. The solutions to this matrix give the natural frequencies and mode shapes for the blade group. Prohl's energy method is used to determine the amplitude of the forced vibrations and the dynamic stresses. A Goodman diagram fatigue criterion is applied to evaluate the …


Tubular Solar Collector Analysis And Comparison With Flat Plate Collectors In Sdhw Applications, Kevin A. Cole Jan 1981

Tubular Solar Collector Analysis And Comparison With Flat Plate Collectors In Sdhw Applications, Kevin A. Cole

Theses

A residential solar domestic hot water system utilizing tubular solar collectors is analyzed for climatic conditions typical of various regions of the Northeast. Experimentally determined system parameters are used in analytical simulations to compare the performance of systems using two different flat plate collectors to the system using the tubular type. A cost/benefit analysis is performed to determine the economic feasibility of the various systems.


1981-1982 Graduate Bulletin, Rochester Institute Of Technology Jan 1981

1981-1982 Graduate Bulletin, Rochester Institute Of Technology

RIT Digital Archives

No abstract provided.


Analysis On The Use Of Viewing Filters To Determine Necessary Color Change In The Graphic Arts Industry, John W. Mcfarlan Jan 1981

Analysis On The Use Of Viewing Filters To Determine Necessary Color Change In The Graphic Arts Industry, John W. Mcfarlan

Theses

This thesis analyzes the effectiveness of the Kodak Color Print View ing Filters. The first half discusses the problems people in the graphic arts encounter when working with color reproductions and points out the in adequacies of the proofing system currently in use. The second half focuses on the application of the viewing filters and their ability to improve the proofing system. This involves an experiment where twenty print buyers and twenty printers are tested on three test images. Half of the partici pants use the viewing filters, the other half do not. The results of the experiment indicate that …


Felt Vessels, Sherry L. Clark Jan 1981

Felt Vessels, Sherry L. Clark

Theses

For my thesis, I plan to develop my interest in landforms as imagery in my work. I want to represent these images three dimensionally in a series of vessel forms, using feltmaking as my technique.


Cryptography And Its Application To Operating System Security, Michelle Painchaud Jan 1981

Cryptography And Its Application To Operating System Security, Michelle Painchaud

Theses

Not provided.


Draw-A-Map: An Interactive Graphical System Using A Relational Data Base, Ethel Comte Jan 1981

Draw-A-Map: An Interactive Graphical System Using A Relational Data Base, Ethel Comte

Theses

Not provided.


R.I.T. News & Events - December 18, 1980, University News Services, Rochester Institute Of Technology Dec 1980

R.I.T. News & Events - December 18, 1980, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


Reporter - December 12th 1980, Rit Reporter Staff Dec 1980

Reporter - December 12th 1980, Rit Reporter Staff

University Publications

No abstract provided.


R.I.T. News & Events - December 11, 1980, University News Services, Rochester Institute Of Technology Dec 1980

R.I.T. News & Events - December 11, 1980, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


Greek Revival Architectural Facades, Miranda Offen Dec 1980

Greek Revival Architectural Facades, Miranda Offen

Theses

None provided.


Trail Markers: Entries, Views, Reminders Of Passage, Michael Flecky Dec 1980

Trail Markers: Entries, Views, Reminders Of Passage, Michael Flecky

Theses

None provided.


R.I.T. News & Events - December 4, 1980, University News Services, Rochester Institute Of Technology Dec 1980

R.I.T. News & Events - December 4, 1980, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


R.I.T. News & Events - November 20, 1980, University News Services, Rochester Institute Of Technology Nov 1980

R.I.T. News & Events - November 20, 1980, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


Reporter - November 14th 1980, Rit Reporter Staff Nov 1980

Reporter - November 14th 1980, Rit Reporter Staff

University Publications

No abstract provided.


R.I.T. News & Events - November 13, 1980, University News Services, Rochester Institute Of Technology Nov 1980

R.I.T. News & Events - November 13, 1980, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


Reporter - November 7th 1980, Rit Reporter Staff Nov 1980

Reporter - November 7th 1980, Rit Reporter Staff

University Publications

No abstract provided.


R.I.T. News & Events - November 6, 1980, University News Services, Rochester Institute Of Technology Nov 1980

R.I.T. News & Events - November 6, 1980, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.


The Effect Of Screen Ruling On The Saturation Of Pastel Gamut Colors, John T. Chittick Nov 1980

The Effect Of Screen Ruling On The Saturation Of Pastel Gamut Colors, John T. Chittick

Theses

Reproduction of pastel colors by offset lithography produces images that have less color saturation than their continuous tone counterparts. This problem is primarily attributable to the halftone structure which approximates continuous tone pastels with large amounts of white paper and small amounts of chromatic ink. This thesis investigates the effect of screen frequency upon pastel color saturation. Single and two color overprint tints of nominal five, 10, and 15 percent printing dot areas were printed in 85, 100, 120, 133, 150, and 200 lines screen rulings. The reflectances of these colors were measured with a colorimeter and converted to CIEL*a*b* …