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Iowa State University

1997

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Method Of Evaluating The Vibration Characteristics Of A Sporting Implement Such As A Golf Club, Kenneth G. Mcconnell, Guy M. Houser Dec 1997

Method Of Evaluating The Vibration Characteristics Of A Sporting Implement Such As A Golf Club, Kenneth G. Mcconnell, Guy M. Houser

Iowa State University Patents

A method of evaluating the vibration characteristics of a golf club comprises identifying the natural frequencies of vibration of the golf club through a pseudorandom vibrational excitation of the club. The club is then excited at least at some of the identified natural frequencies and the club head is observed under a strobe light to identify and locate on the face of the club head the node lines corresponding to the vibrational mode shape for these natural frequencies. The intersection pattern of the node lines as observed and mapped on the club face and the offset of this pattern from ...


An Analysis Of Costs By Size Of Jail For Selected Counties In Iowa, Mark A. Edelman Dr., Adrian J. Mayer Dec 1997

An Analysis Of Costs By Size Of Jail For Selected Counties In Iowa, Mark A. Edelman Dr., Adrian J. Mayer

Economic Staff Paper Series

The authors offer sincere thanks to the sheriffs and chief jail administrators from Adair, Cass, Chickasaw, Floyd, Kossuth, Mahaska, Webster, and Wright counties for their candor, professionalism, experience, and time during the course of this study. The authors also would extend appreciation to county supervisors in Polk, Marshall, Clarke, Franklin, Wright, Boone, and Muscatine counties for providing additional information from recent jail studies.


More On Fobe, Neil Harl Dec 1997

More On Fobe, Neil Harl

Agricultural Law Digest

The family-owned business exclusion, enacted as part of the Taxpayer Relief Act of 1997 contained numerous omissions and ambiguities as enacted. A letter from the Joint Committee on Taxation to Sen. Charles E. Grassley of Iowa has provided additional insights into JCT’s view of how the statute should be interpreted.


Cases, Regulations And Statutes, Robert P. Achenbach Jr. Dec 1997

Cases, Regulations And Statutes, Robert P. Achenbach Jr.

Agricultural Law Digest

No abstract provided.


Index To Volume 8, Nos. 1-24, Agricultural Law Digest Dec 1997

Index To Volume 8, Nos. 1-24, Agricultural Law Digest

Agricultural Law Digest

No abstract provided.


Cases, Regulations And Statutes, Robert P. Achenbach Jr. Dec 1997

Cases, Regulations And Statutes, Robert P. Achenbach Jr.

Agricultural Law Digest

No abstract provided.


Income Averaging, Neil Harl Dec 1997

Income Averaging, Neil Harl

Agricultural Law Digest

Although the possibility of a return to income averaging had been discussed for several years, enactment of income averaging for farm income came as a great surprise to many. The provision is not effective until 1998, and remains available for 1999 and the year 2000, and sunsets at the end of 2000 unless extended by legislative action.


Confirmation Of Excited-State Proton Transfer And Ground-State Heterogeneity In Hypericin By Fluorescence Upconversion, D. S. English, K. Das, K. D. Ashby, J. Park, Jacob W. Petrich, E. W. Castner Jr. Dec 1997

Confirmation Of Excited-State Proton Transfer And Ground-State Heterogeneity In Hypericin By Fluorescence Upconversion, D. S. English, K. Das, K. D. Ashby, J. Park, Jacob W. Petrich, E. W. Castner Jr.

Chemistry Publications

Fluorescence upconversion measurements of hypericin and its methylated analog, O-hexamethoxyhypericin, which possesses no labile protons, confirm excited-state proton (or hydrogen atom) transfer as the primary photophysical event in hypericin. The presence of a rising component in the time-resolved fluorescence of hypericin and the absence of such a component for the hexamethoxy analog are consistent with our assignment of excited-state proton or atom transfer as the primary photophysical process in the light-activated antiviral compound, hypericin. The results using the fluorescence upconversion technique, which detects only emission from the excited state, are in good agreement with our previous transient absorbance measurements ...


Carbon Or Boron Modified Titanium Silicide, Andrew J. Thome, Mufit Akinc Dec 1997

Carbon Or Boron Modified Titanium Silicide, Andrew J. Thome, Mufit Akinc

Iowa State University Patents

A titanium silicide material based on Ti.sub.5 Si.sub.3 intermetallic compound exhibits substantially improved oxidative stability at elevated temperatures. In particular, carbon is added to a Ti.sub.5 Si.sub.3 base material in an amount (e.g. about 0.3 to about 3.6 weight % C) effective to impart substantially improved oxidative stability at elevated temperatures, such as about 1000 Si.sub.3 base material in an amount (e.g. about 0.3 to about 3.3 weight % B) to this same end.


Toward A Theory Of Food And Agriculture Policy Intervention For A Developing Economy With Particular Reference To Nigeria, Gbolagade B. Ayoola Dec 1997

Toward A Theory Of Food And Agriculture Policy Intervention For A Developing Economy With Particular Reference To Nigeria, Gbolagade B. Ayoola

CARD Working Papers

Following three months as a visiting scholar in the Department of Economics at lows State University, the author documents the results of his discussions regarding the policy process for agriculture and rural development in developing countries. His goal in this study is to initiate a process that will lead to a concise theory of policy intervention specifically suitable for the prevailing conditions in developing countries. He discusses the main features of the Nigerian agricultural polio environment to arouse interest in the analysis of that environment in relation to the advanced agricultural system of the United States.


Nafta And U.S.-Mexican Beef Trade: Long-Run Implications For Changes In Trade Flows From Technology Transfers, Bryan E. Melton, Wallace E. Huffman Dec 1997

Nafta And U.S.-Mexican Beef Trade: Long-Run Implications For Changes In Trade Flows From Technology Transfers, Bryan E. Melton, Wallace E. Huffman

Economic Staff Paper Series

This study examines potential long-term impacts on the U.S. and Mexican beef industries of the reduction in trade barriers under NAFTA and likely associated international technology transfers (of beef cattle, feeding methods, and meat packing) and foreign capital investments. The beef industry is represented as four subsectors: cow-calf production, post-weaning beef production, meat packing, and leather production. The analysis is accomplished through a multi-sector model of the U.S. and Mexican beef industries, estimation of key parameters, and simulation of long-run outcomes under three alternative scenarios. Our results show that Mexico will dramatically expand the size of its cow ...


Off-Farm Work Participation, Off-Farm Labor Supply And On-Farm Labor Demand Of U.S. Farm Operators, Wallace E. Huffman, Hisham El-Osta Dec 1997

Off-Farm Work Participation, Off-Farm Labor Supply And On-Farm Labor Demand Of U.S. Farm Operators, Wallace E. Huffman, Hisham El-Osta

Economic Staff Paper Series

An agricultural household model provides the framework for modeling off-farm work participation and off-farm and on-farm work decisions of farm operators. The empirical results are obtained from fitting the econometric model to data from a large national survey. In the estimated structural off-farm work participation equation, the operator's off-farm wage offer has a strong positive effect and other household income has a negative effect on the probability of off-farm work. For farm operators who participate in off-farm work, the wage elasticity of their off-farm labor supply is positive but of their on-farm labor demand is zero. The income elasticity ...


Agricultural Research: Benefits And Beneficiaries Of Alternative Funding Mechanism, Wallace E. Huffman, Richard E. Just Dec 1997

Agricultural Research: Benefits And Beneficiaries Of Alternative Funding Mechanism, Wallace E. Huffman, Richard E. Just

Economic Staff Paper Series

The United States has developed a very successful R&D system for agriculture. It is a system with shared cost/financing and performance by the federal and state governments and by the private sector. The paper presents an economic analysis of alternative organization, management, incentive, and funding mechanisms for agricultural research under budget constraints, including some emphasis on thekinds of benefits thatare generated and thegroups that receive them. We conclude that the private sector should bepermitted to carry outresearch that it finds profitable to undertake withminimal competition firom the public sector. The public research institutions should focus on general and ...


Informality, Size, And Regulation: Theory And An Application To Egypt, Marcelo M. Giugale, Sherif El-Diwany Dec 1997

Informality, Size, And Regulation: Theory And An Application To Egypt, Marcelo M. Giugale, Sherif El-Diwany

CARD Working Papers

The paper shows how, when the enforceability of regulations is size-sensitive, price competition can lock firms into informality and, thus, smallness, depending on the form of the production function. In that context, exogenous "help" packages targeted to informal firms "promote" micro and small enterprises (i.e., increase their numbers) but do not "develop" them (i.e., foster their growth). The "help" only generates a short-term span of abnormal profits for existing informal firms, and a long-term income transfer toward informal-market consumers. The model is tested in the context of Egypt's micro and small enterprise sector.


The Bait Industry In Illinois, Michigan, Minnesota, Ohio, South Dakota, And Wisconsin, Thomas G. Meronek, Fred A. Copes, Daniel W. Coble Dec 1997

The Bait Industry In Illinois, Michigan, Minnesota, Ohio, South Dakota, And Wisconsin, Thomas G. Meronek, Fred A. Copes, Daniel W. Coble

NCRAC Technical Bulletins

This bulletin provides information from a comprehensive survey of the status of the bait industry in the North Central states of Illinois, Michigan, Minnesota, Ohio, South Dakota, and Wisconsin. We supply information on species marketed, state by state estimated quantities of baitfish and non-fish baits sold, and supply shortages. Information in this bulletin should be useful to operating bait dealers and prospective bait wholesaler and retail dealers.


Agricultural Trade Liberalization And Capital Flows In The Americas, James Reitzes, Gordon C. Rausser, Roger Hickey, Jeremy Arnone Dec 1997

Agricultural Trade Liberalization And Capital Flows In The Americas, James Reitzes, Gordon C. Rausser, Roger Hickey, Jeremy Arnone

GATT Research Papers

In the second of three related papers, the authors develop a model that estimates the effects on prices, outputs, and trade flows arising from the elimination of U.S. import tariffs on contemplate agricultural commodities from Latin America. Eight agricultural commodities and six countries were selected for analysis. The authors also assess how the increased trade flows from Latin America to the United States are likely to create additional investment in the agricultural sector in Latin American countries.


Lsl Traits For Using Z With Larch, Hua Zhong Dec 1997

Lsl Traits For Using Z With Larch, Hua Zhong

Computer Science Technical Reports

and Larch-style languages are two kind of specification languages that are used for software design. Z is more simple and abstract, while Larch-style behavioral interface specification languages can specify more detail about the interface of a module written in a specific programming language. In this paper, I present Larch Shared Language traits that define the equivalent of the Z mathematical toolkit. These traits can be used by people familiar with the Z mathematical toolkit who wish to write interface specifications in a Larch-style language. I also show how to use these traits to easily translate Z specifications into Larch-style interface ...


Further Characterization Of A Complement-Sensitive Mutant Of A Virulent Avian Escherichia Coli Isolate, Theodore J. Kottom, Lisa K. Nolan, Michael Robinson, John Brown, Tom Gustad, Shelley M. Horne, Catherine W. Giddings Dec 1997

Further Characterization Of A Complement-Sensitive Mutant Of A Virulent Avian Escherichia Coli Isolate, Theodore J. Kottom, Lisa K. Nolan, Michael Robinson, John Brown, Tom Gustad, Shelley M. Horne, Catherine W. Giddings

Lisa K. Nolan

An attempt was made to characterize the mechanism of complement resistance operating in a virulent avian Escherichia coli isolate. Using flow cytometry to detect antibody to C3, we found that there was significantly more antibody bound to a complement-sensitive mutant of this wild type than to the parent organism, suggesting that more C3 subunits were bound to the wild type. Neither the wild type nor the mutant degraded C3. Further, the mutant was phagocytosed to a significantly greater degree than the wild type by cultured phagocytes in the presence of C5-deficient serum. These data suggest that the wild type is ...


A Highly Adherent Phenotype Associated With Virulent Bvg+-Phase Swine Isolates Of Bordetella Bronchiseptica Grown Under Modulating Conditions, Karen B. Register, Mark R. Ackermann Dec 1997

A Highly Adherent Phenotype Associated With Virulent Bvg+-Phase Swine Isolates Of Bordetella Bronchiseptica Grown Under Modulating Conditions, Karen B. Register, Mark R. Ackermann

Mark R. Ackermann

The ability of Bvg(-)-phase and Bvg(+)-phase Bordetella bronchiseptica swine isolates, grown under modulating or nonmodulating conditions, to adhere to swine ciliated nasal epithelial cells was determined. When virulent strains were cultivated at 37 degrees C in the Bvg+ phase, numerous adherent bacteria (approximately eight per cell, depending on the strain used) were observed. However, when such strains were grown under modulating conditions (23 degrees C), a significant increase in the level of attachment was seen, suggesting that B. bronchiseptica produces a Bvg-repressed adhesin under these conditions. bvg mutant strains, including an isogenic bvgS mutant, adhered minimally. Western blots ...


The 1997 Iowa Corn Yield Test Report, District 2, K.E. Ziegler, W.H. Vinson, D.E. Carroll Dec 1997

The 1997 Iowa Corn Yield Test Report, District 2, K.E. Ziegler, W.H. Vinson, D.E. Carroll

Iowa Corn Yield Tests

Results of the Iowa Crop Performance Test - Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 78th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's home page at http://agron.iastate.edu/icia/ usually around the end of November. Anyone can access this information and receive the data as soon as they are released. This information can be accessed in three other ways: by modem at (515)-294-8354 and logging in as "guest," through Internet using World Wide Web (WWW) at the URL: http://www.exnet ...


The 1997 Iowa Corn Yield Test Report, District 1, K.E. Ziegler, W.H. Vinson, D.E. Carroll Dec 1997

The 1997 Iowa Corn Yield Test Report, District 1, K.E. Ziegler, W.H. Vinson, D.E. Carroll

Iowa Corn Yield Tests

Results of the Iowa Crop Performance Test - Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 78th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's home page at http://agron.iastate.edu/icia/ usually around the end of November. Anyone can access this information and receive the data as soon as they are released. This information can be accessed in three other ways: by modem at (515)-294-8354 and logging in as "guest," through Internet using World Wide Web (WWW) at the URL: http://www.exnet ...


The 1997 Iowa Corn Yield Test Report, District 6, K.E. Ziegler, W.H. Vinson, D.E. Carroll Dec 1997

The 1997 Iowa Corn Yield Test Report, District 6, K.E. Ziegler, W.H. Vinson, D.E. Carroll

Iowa Corn Yield Tests

Results of the Iowa Crop Performance Test - Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 78th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's home page at http://agron.iastate.edu/icia/ usually around the end of November. Anyone can access this information and receive the data as soon as they are released. This information can be accessed in three other ways: by modem at (515)-294-8354 and logging in as "guest," through Internet using World Wide Web (WWW) at the URL: http://www.exnet ...


The 1997 Iowa Corn Yield Test Report, District 3, K.E. Ziegler, W.H. Vinson, D.E. Carroll Dec 1997

The 1997 Iowa Corn Yield Test Report, District 3, K.E. Ziegler, W.H. Vinson, D.E. Carroll

Iowa Corn Yield Tests

Results of the Iowa Crop Performance Test - Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 78th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's home page at http://agron.iastate.edu/icia/ usually around the end of November. Anyone can access this information and receive the data as soon as they are released. This information can be accessed in three other ways: by modem at (515)-294-8354 and logging in as "guest," through Internet using World Wide Web (WWW) at the URL: http://www.exnet ...


The 1997 Iowa Corn Yield Test Report, District 7, K.E. Ziegler, W.H. Vinson, D.E. Carroll Dec 1997

The 1997 Iowa Corn Yield Test Report, District 7, K.E. Ziegler, W.H. Vinson, D.E. Carroll

Iowa Corn Yield Tests

Results of the Iowa Crop Performance Test - Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 78th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's home page at http://agron.iastate.edu/icia/ usually around the end of November. Anyone can access this information and receive the data as soon as they are released. This information can be accessed in three other ways: by modem at (515)-294-8354 and logging in as "guest," through Internet using World Wide Web (WWW) at the URL: http://www.exnet ...


The 1997 Iowa Corn Yield Test Report, District 5, K.E. Ziegler, W.H. Vinson, D.E. Carroll Dec 1997

The 1997 Iowa Corn Yield Test Report, District 5, K.E. Ziegler, W.H. Vinson, D.E. Carroll

Iowa Corn Yield Tests

Results of the Iowa Crop Performance Test - Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 78th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's home page at http://agron.iastate.edu/icia/ usually around the end of November. Anyone can access this information and receive the data as soon as they are released. This information can be accessed in three other ways: by modem at (515)-294-8354 and logging in as "guest," through Internet using World Wide Web (WWW) at the URL: http://www.exnet ...


The 1997 Iowa Corn Yield Test Report, District 4, K.E. Ziegler, W.H. Vinson, D.E. Carroll Dec 1997

The 1997 Iowa Corn Yield Test Report, District 4, K.E. Ziegler, W.H. Vinson, D.E. Carroll

Iowa Corn Yield Tests

Results of the Iowa Crop Performance Test - Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 78th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's home page at http://agron.iastate.edu/icia/ usually around the end of November. Anyone can access this information and receive the data as soon as they are released. This information can be accessed in three other ways: by modem at (515)-294-8354 and logging in as "guest," through Internet using World Wide Web (WWW) at the URL: http://www.exnet ...


Factors Influencing Wetland Use By Canada Geese, David E. Naugle, Jeffrey S. Gleason, Jonathan A. Jenks, Kenneth E. Higgins, Paul W. Mammenga, Sarah M. Nusser Dec 1997

Factors Influencing Wetland Use By Canada Geese, David E. Naugle, Jeffrey S. Gleason, Jonathan A. Jenks, Kenneth E. Higgins, Paul W. Mammenga, Sarah M. Nusser

Statistics Publications

Seasonal and semi-permanent wetlands in eastern South Dakota were surveyed in 1995 and 1996 to identify habitat characteristics influencing wetland use by Canada geese (Branta canadensis maxima). Position of a wetland within the landscape and its area were important landscape-scale features influencing wetland use by geese. Our delineation of potential Canada goose habitat using a wetland geographic information system indicated that distribution and area of semi-permanent wetlands likely limit Canada goose occurrence in regions outside the Prairie Coteau. Periodicity in hydrologic cycles within landscapes also may influence goose use of wetlands in eastern South Dakota.


Is There A Latin-American Debt Crisis Building Up In Eastern Europe? A Comparative Analysis, Dagney Faulk, Marcelo M. Giugale Dec 1997

Is There A Latin-American Debt Crisis Building Up In Eastern Europe? A Comparative Analysis, Dagney Faulk, Marcelo M. Giugale

CARD Working Papers

This paper attempts to advance the analysis of Eastern Europe's ongoing debt accumulation process by comparing it to the debt accumulation press that preceded the Latin American debt crisis of the early 1980s. The authors report on key country and international conditions in both situations and place Eastern Europe in the quantitative context of the Latin-American crisis-in-the-making of the late 1970s and early 1980s. This allows for the identification of some reassuring, as well as some worrisome, trends and for the drawing of some broad sustainability-related conclusions.


Ring Opening Of Silacyclobutane, Mark S. Gordon, Thomas J. Barton, Haruyuki Nakano Dec 1997

Ring Opening Of Silacyclobutane, Mark S. Gordon, Thomas J. Barton, Haruyuki Nakano

Chemistry Publications

Multiconfigurational self-consistent field (MCSCF) wave functions, augmented by second order perturbation theory to partially recover the dynamic correlation, suggest that the most likely route from silacyclobutane to products ethylene + silene is initial cleavage of a ring CC bond to form a trans ·CH2SiH2CH2CH2· diradical, followed by rupture of the central SiC bond. This prediction is in agreement with the available experimental results. While this trans diradical is predicted to be a minimum on the MCSCF ground state potential energy surface, the transition state separating this species from products disappears when dynamic correlation is added. Therefore, the bottleneck on this part ...


Simulating Nitrogen Management Effects Of Subsurface Drainage Water Quality, A S. Azevedo, P. Singh, Ramesh S. Kanwar, Lajpat R. Ahuja Dec 1997

Simulating Nitrogen Management Effects Of Subsurface Drainage Water Quality, A S. Azevedo, P. Singh, Ramesh S. Kanwar, Lajpat R. Ahuja

Agricultural and Biosystems Engineering Publications

Increased level of NO3-N in the drinking water supplies is a major health concern these days. The long-term effects of actual nitrogen (N) fertilizer management practices are not well understood. The use of computer models allows the simulation of different N management practices on a long-term basis and their related effects on water quality. The RZWQM (Root Zone Water Quality Model, Version 3.0) was used to simulate the long-term (1978–1992) impacts of N management practices (single N applications at 50, 100, 150, and 200 kg per ha; and single and split N applications at 150 and ...