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1998

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Ds Cdma Scheme For Watm Lan With Error Control, Beata J. Wysocki, Tadeusz A. Wysocki, Hans J. Zepernick Jan 1998

Ds Cdma Scheme For Watm Lan With Error Control, Beata J. Wysocki, Tadeusz A. Wysocki, Hans J. Zepernick

Department of Electrical and Computer Engineering: Faculty Publications (to 2015)

In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on Walsh- Rademacber functions. The method to obtain those optimized spreading signatures, as well as the full set of the coefficients giving the minimum level of crosscorrelation between any pair of the channels is shown. The resultant system BER as well as the distribution of errors within WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme, capable of correcting 10 errors, the number of WATM cells which would require retransmission is …

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Error Performance Of The 13-Channel Ds Cdma Watm Lan, Beata J. Wysocki, Tadeusz Wysocki, Hans J. Zepernick Jan 1998

Error Performance Of The 13-Channel Ds Cdma Watm Lan, Beata J. Wysocki, Tadeusz Wysocki, Hans J. Zepernick

Department of Electrical and Computer Engineering: Faculty Publications (to 2015)

In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on Walsh-Rademacher functions. The method to obtain those optimized spreading signatures, as well as the full set of the coefficients giving the minimum level of cross-correlation between any pair of the channels is shown. The resultant system BER and the distribution of errors within encapsulated WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme, capable of correcting 10 errors, the number of WATM cells which would require retransmission is in the …

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Dissociation Constants Of Oxalic Acid In Aqueous Sodium Chloride And Sodium Trifluoromethanesulfonate Media To 175 °C, Richard Kettler, David J. Wesolowski, Donald A. Palmer Jan 1998

Dissociation Constants Of Oxalic Acid In Aqueous Sodium Chloride And Sodium Trifluoromethanesulfonate Media To 175 °C, Richard Kettler, David J. Wesolowski, Donald A. Palmer

Department of Earth and Atmospheric Sciences: Faculty Publications

The first and second molal dissociation constants of oxalic acid were measured potentiometrically in a concentration cell fitted with hydrogen electrodes. Measurements were made at six temperatures ranging from 5 °C to 125 °C at four ionic strengths ranging from 0.1 mol•kg-1 to 1.0 mol•kg-1 (NaCl and NaCF3-SO3). The second molal dissociation constant was measured in NaCF3SO3 media only. The data obtained in this study were combined with the corresponding literature values, including a number of recalculated Harned cell and concentration cell measurements and previous results from this laboratory. Data for …

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Hopwood, Bakke And The Future Of The Diversity Justification, Lackland H. Bloom Jr. Jan 1998

Hopwood, Bakke And The Future Of The Diversity Justification, Lackland H. Bloom Jr.

Faculty Journal Articles and Book Chapters

The decision of the Court of Appeals for the Fifth Circuit in Hopwood v. Texas sent shock waves through the academic community with its holding that the Equal Protection Clause of the Fourteenth Amendment prohibited the University of Texas Law School from taking account of race as a factor in its admissions process. In the course of invalidating certain procedures employed by the law school, the Fifth Circuit concluded that Justice Powell's influential opinion in Regents of the University of California v. Bakke, which recognized the pursuit of diversity in higher education as a compelling state interest, had never constituted …

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Instructional Technology In The School System, Sherri Sue Zanotti Jan 1998

Instructional Technology In The School System, Sherri Sue Zanotti

Graduate Research Papers

Analyses of the deployment of technology in schools have tended to note its failure to affect the daily values and practices of teachers and students. This absence is generally regarded as an implementation failure, or as resulting from some temperamental shortcoming on the part of the teachers or technologists. Such a construction is predicated on the assumption that the technology is value free and its implementation a struggling playing field. This paper proposes that no instructional technology is ever neutral. Its value and practices must support the organization into which it is placed. The failures of technology to look and …

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Mach-Zehnder Interferometer Fringe Projector For Variable Resolution Video Moire, Phillip C. Kalmanson, August Schutte, Chris L. Hart, Joel H. Blatt Jan 1998

Mach-Zehnder Interferometer Fringe Projector For Variable Resolution Video Moire, Phillip C. Kalmanson, August Schutte, Chris L. Hart, Joel H. Blatt

Aerospace, Physics, and Space Science Faculty Publications

A Mach-Zehnder based variable resolution fringe projection system has been built for 3-D video moini machine vision. This system uses the three main advantages of the Mach-Zehnder - 1) There is no optical feedback to the laser source, 2) The interfemmeter can accept two different laser wavelengths simultaneously, and 3) The interferometer produces two orthngonal output beams. The lack of optical feedback makes the Mach-Zehnder especially attractive for use with high power laser diode sources which are sensitive to optical feedback. When the two input ports axe used with two different wavelength lasers, the target can be illuminated by simultaneous …

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Variations In Calcium, Phosphorus, Iron, Copper, Zinc And Manganese Contents Of Wheat Andrice Varieties Under Salt Stress, Mehmet Alpaslan, Aydın Güneş, Süleyman Taban, İbrahim Erdal, Ceyhan Tarakcioğlu Jan 1998

Variations In Calcium, Phosphorus, Iron, Copper, Zinc And Manganese Contents Of Wheat Andrice Varieties Under Salt Stress, Mehmet Alpaslan, Aydın Güneş, Süleyman Taban, İbrahim Erdal, Ceyhan Tarakcioğlu

Turkish Journal of Agriculture and Forestry

Variations in Ca, P, Fe, Cu, Zn and Mn contents of six wheat (Gerek, Bolal, Kıraç, Çakmak, Bezostaya and Kızıltan) and six rice varieties (Ribe, Tri-445, Serhat 92, Kros 424, Baldo and Rocca) under salt stress were investigated. Growth was inhibited by salinity. Salinity decreased P content of Kızıltan, while increased rice cultivars of Tri-445 and Kros 424. Iron contents of wheat cultivars of Gerek, Bolal and Kıraç and rice cultivars of Tri-445 and Rocca were decreased by salinity. In contrast to this, Iron contents of wheat cultivars of Çakmak and Bezostaya and rice cultivars of Ribe, Serhat 92, Kros …

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Expression Of A Heterologous Polypeptide In Mammary Tissue Of Transgenic Non-Human Mammals Using Along Whey Acdic Protein Promoter, Henryk Lubon, William N. Drohan, Lother Hennighausen Jan 1998

Expression Of A Heterologous Polypeptide In Mammary Tissue Of Transgenic Non-Human Mammals Using Along Whey Acdic Protein Promoter, Henryk Lubon, William N. Drohan, Lother Hennighausen

Department of Chemical and Biomolecular Engineering: Faculty Publications

Heterologous polypeptides are produced in the milk of transgenic non-human mammals by the expression of a Stably integrated DNA sequence containing the long whey acidic protein promoter operably linked to a DNA sequence encoding a heterologous polypeptide and a signal Sequence. The transgenic non-human mammals of the present invention are produced by introducing this DNA sequence Such that the DNA sequence is stably integrated into the DNA of germ line cells of the mature mammal and inherited in normal Mendelian fashion. A representative heterologous polypeptide is protein C.

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Calibrating Drill Seed Meters, Vern Hofman Jan 1998

Calibrating Drill Seed Meters, Vern Hofman

AE Series – Agricultural Engineering/ABEN

No abstract provided.

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Backgrounding Facilities, John Dhuyvetter Jan 1998

Backgrounding Facilities, John Dhuyvetter

AS Series – Animal Science

No abstract provided.

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Discussion After The Speeches Of Gary Horlick And Sarah Richardson, Discussion Jan 1998

Discussion After The Speeches Of Gary Horlick And Sarah Richardson, Discussion

Canada-United States Law Journal

No abstract provided.

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Discussion After The Speeches Of Shirley Coffield And James Mcilroy, Discussion Jan 1998

Discussion After The Speeches Of Shirley Coffield And James Mcilroy, Discussion

Canada-United States Law Journal

No abstract provided.

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Discussion After The Speech Of Donald Macdonald, Discussion Jan 1998

Discussion After The Speech Of Donald Macdonald, Discussion

Canada-United States Law Journal

No abstract provided.

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Toward Fifty Years Of Constitutionalism And Fundamental Rights In India: Looking Back To See Ahead (1950-2000), Vijayashri Sripati Jan 1998

Toward Fifty Years Of Constitutionalism And Fundamental Rights In India: Looking Back To See Ahead (1950-2000), Vijayashri Sripati

American University International Law Review

No abstract provided.

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Financing Sources For Trade & Investment In Latin America, A. Martin Erim, E. Terry Jaramillo, Mark D. Johnson, Marco G. Monroy, Miguel E. Rubio, Oliver P. Yandle, Carlos A. Zubiaur Jan 1998

Financing Sources For Trade & Investment In Latin America, A. Martin Erim, E. Terry Jaramillo, Mark D. Johnson, Marco G. Monroy, Miguel E. Rubio, Oliver P. Yandle, Carlos A. Zubiaur

American University International Law Review

No abstract provided.

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Assessing Your Hazardous Waste Management Practices, John Nowatzki, Bruce Seelig, Thomas Scherer Jan 1998

Assessing Your Hazardous Waste Management Practices, John Nowatzki, Bruce Seelig, Thomas Scherer

AE Series – Agricultural Engineering/ABEN

No abstract provided.

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Temporary Grain Storage, Kenneth J. Hellevang Jan 1998

Temporary Grain Storage, Kenneth J. Hellevang

AE Series – Agricultural Engineering/ABEN

No abstract provided.

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Safe Use Of Big Round Balers, George G. Maher Jan 1998

Safe Use Of Big Round Balers, George G. Maher

AE Series – Agricultural Engineering/ABEN

No abstract provided.

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The Effect Of Temperature Dependent Frequency Factor On The Evaluated Trapping Parameters Of Tsl Glow Curves, A. N. Yazici, Z. Öztürk Jan 1998

The Effect Of Temperature Dependent Frequency Factor On The Evaluated Trapping Parameters Of Tsl Glow Curves, A. N. Yazici, Z. Öztürk

Turkish Journal of Physics

The effect of temperature dependency on frequency factor and its relationship to trapping parameters is discussed by using the peak shape method. The coefficients appearing in the peak shape formula for the calculation of the activation energy have been determined and tabulated for the symmetry factor $\mu_g(X)$ for $x=0.50$ and 0.75 of the peak intensity. It is found that significant errors occur in the value of the trapping parameters if the temperature dependecy of the frequency factor is not consider.

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Cover And Contents Jan 1998

Cover And Contents

Turkish Journal of Physics

No abstract provided.

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Cover And Contents Jan 1998

Cover And Contents

Turkish Journal of Physics

No abstract provided.

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Cover And Contents Jan 1998

Cover And Contents

Turkish Journal of Physics

No abstract provided.

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Photoconductivity Studies Of Crystalline Si:H P-I-N, Ruhi Kaplan, Bengü Kaplan Jan 1998

Photoconductivity Studies Of Crystalline Si:H P-I-N, Ruhi Kaplan, Bengü Kaplan

Turkish Journal of Physics

Optically modulated photoconductivity (PC) properties of hydrogenated crystalline silicon (c-Si:H) with p-i-n junctions were investigated by frequency-resolved spectroscopy in the temperature range 20-290 K. The PC lifetime measurements of c-Si:H p-i-n show a second lifetime distribution which only dominates at low temperature under low illumination levels of excitation. Unlike the room temperature single lifetime distribution seen in c-Si:H p-i-n, the maximum of this second lifetime distribution shifts to longer times when the excitation intensity decreases, which reconciles with non-geminate pair recombination and thus the distant-pair model. In addition to lifetime measurements, the direct current-voltage (I-V) characteristics, the excitation light intensity- …

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Analytical Expressions Of Matrix Elements For Saxon-Woods Potential And Pad'{E} Approximations, Valentin L. R. Niculescu, Dumitru Catana Jan 1998

Analytical Expressions Of Matrix Elements For Saxon-Woods Potential And Pad'{E} Approximations, Valentin L. R. Niculescu, Dumitru Catana

Turkish Journal of Physics

The paper presents the analytical matrix elements of the kinetic hamiltonian in the oscillator base. The Pad'{e} approximations for the potential part (Saxon - Woods and alike) was used. From residue calculus the potential matrix elements are analytical. Many parts of these expressions can be computed once for ever. In this way the evaluation time can be reduced and the relations obtained are well suited for parallel computation.

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Domain Structures Of Epitaxial Perovskite Ferroelectric Films: Part Ii. Applications, S. Pamir Alpay, Alexander L. Roytburd Jan 1998

Domain Structures Of Epitaxial Perovskite Ferroelectric Films: Part Ii. Applications, S. Pamir Alpay, Alexander L. Roytburd

Turkish Journal of Physics

The use of domain stability maps for epitaxial perovskite ferroelectric films is illustrated with some examples. The equilibrium domain structure and domain fractions as a function of temperature are predicted for PbTiO_3(001) films grown epitaxially on three different substrates: MgO(001), KTaO_3(001), and SrTiO_3(001). Misfit dislocation formation at the growth temperature is found to have a profound effect on both the domain selection and relative domain populations. Theoretical predictions are compared with available experimental data.

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Cover And Contents Jan 1998

Cover And Contents

Turkish Journal of Physics

No abstract provided.

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^{19}F Nmr Study Of Flux-Line Dynamics In Fluorinated Yba_2cu_4o_8, Figen Tabak, Mavrizio Corti̇ Jan 1998

^{19}F Nmr Study Of Flux-Line Dynamics In Fluorinated Yba_2cu_4o_8, Figen Tabak, Mavrizio Corti̇

Turkish Journal of Physics

Measurements of the ^{19}F NMR linewidth \Delta \nu and spin-lattice relaxation rate 1/T_1 have been performed in an oriented powder sample of fluorinated YBa_2Cu_4O_8 at temperatures 4 < T < 300 K and static magnetic fields 0.3 < H_0 < 9.4 T for Hollc. Thermal motion of flux lines was evidenced from the effect on NMR linewidth while 1/T_1 showed the effects due to interaction with Fermi liquid.

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Cover And Contents Jan 1998

Cover And Contents

Turkish Journal of Physics

No abstract provided.

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Sexual Dis-Orientation: Transgendered People And Same-Sex Marriage, Mary I. Coombs Jan 1998

Sexual Dis-Orientation: Transgendered People And Same-Sex Marriage, Mary I. Coombs

Articles

In this Article, Professor Coombs argues that the debate about same-sex marriage has wrongfully ignored transgendered people and their relationships. She provides an overview of arguments made by opponents of same-sex marriage, such as tradition, procreation, child-rearing, and family values. She then examines cases involving transsexual marriages and uses this analysis to deconstruct the same-sex marriage debate. Professor Coombs argues that an honest consideration of transgendered people and their relationships forces a re-evaluation of arguments against same-sex marriage and disrupts the gendered patriarchy on which traditional marriage rests. Marriage should be seen as a relationship between two people, regardless of …

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Establishing Deliberative Democracy: Moving From Misery To Poverty With Dignity, Irwin P. Stotzky Jan 1998

Establishing Deliberative Democracy: Moving From Misery To Poverty With Dignity, Irwin P. Stotzky

Articles

No abstract provided.

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