scholarly journals A Simple Solution to the Problem of Independence of Irrelevant Alternatives in Choo and Siow Marriage Market Model

2019 ◽  
Author(s):  
Federico Gutierrez
Keyword(s):  
Marriage Market ◽  
Simple Solution ◽  
Market Model ◽  
Independence Of Irrelevant Alternatives

scholarly journals Guess Who's Been Coming to Dinner? Trends in Interracial Marriage over the 20th Century

2007 ◽  
Vol 21 (2) ◽  
pp. 71-90 ◽  
Author(s):  
Roland G Fryer
Keyword(s):  
Social Exchange ◽  
Social Exchange Theory ◽  
Census Data ◽  
Interracial Marriage ◽  
Marriage Market ◽  
Rare Event ◽  
Market Model ◽  
History Of ◽  
Black Marriages ◽  
Racial Lines

This paper studies marriages across black, white, and Asian racial lines. Marrying across racial lines is a rare event, even today. Interracial marriages account for approximately 1 percent of white marriages, 5 percent of black marriages, and 14 percent of Asian marriages. Following a brief history of the regulation of race and romance in America, I analyze interracial marriage using census data from 1880–2000, uncovering a rich set of cross-section and time-series patterns. I investigate the extent to which three different theories of interracial marriage can account for the patterns discovered. After also testing a social exchange theory and a search model, I find the data are most consistent with a Becker-style marriage market model in which objective criteria of a potential spouse, their race, and the social price of intermarriage are central.

An Attack on the Contamination Problem in the Electron Microscope

1967 ◽  
Vol 25 ◽  
pp. 368-368
Author(s):  
J. J. Kelsch ◽  
A. Holtz
Keyword(s):  
Electron Microscope ◽  
Pressure Gradient ◽  
Ionization Potential ◽  
Simple Solution ◽  
Specimen Surface ◽  
Contamination Rate ◽  
Local Pressure ◽  
High Ionization ◽  
Hydrocarbon Molecules ◽  
Contamination Problem

A simple solution to the serious problem of specimen contamination in the electron microscope is presented. This is accomplished by the introduction of clean helium into the vacuum exactly at the specimen position. The local pressure gradient thus established inhibits the migration of hydrocarbon molecules to the specimen surface. The high ionization potential of He permits the use of relatively large volumes of the gas, without interfering with gun stability. The contamination rate is reduced on metal samples by a factor of 10.

Contract institutions in the Russian economy: The sphere of state, municipal, and regulated procurement

2017 ◽  
pp. 93-110 ◽  
Author(s):  
O. Anchishkina
Keyword(s):  
Economic Growth ◽  
Theoretical Model ◽  
Market Structure ◽  
Market Equilibrium ◽  
Statistical Evidence ◽  
Market Model ◽  
Market Behavior ◽  
Database Analysis ◽  
Russian Economy ◽  
Contracting Model

The article synthesizes information on database analysis of state, municipal, and regulated procurement through which Russian contract institutions and the market model are investigated. The inherent uncertainty of quantity indicators on contracting activities and process is identified and explained. The article provides statistical evidence for heterogeneous market structure in state and municipal procurement, and big player’s dominance. A theoretical model for market behavior, noncooperative competition and collusion is proposed, through which the major trends are explained. The intrinsic flaws and failure of the current contracting model are revealed and described. This ineffectiveness is regarded to be not a limitation, but a challenge to be met. If responded to, drivers for economic growth and market equilibrium will be switched on.

DEVELOPMENT OF A SYSTEM FOR ASSESSING THE EFFECTIVENESS OF THE USE OF STATE RESOURCES TO CREATE A NATIONAL INNOVATION SYSTEM AS A FACTOR IN INCREASING THE STATE'S ECONOMIC SECURITY

2020 ◽  
pp. 185-197
Author(s):  
Anatoliy B. Yaroshchuk ◽  
Keyword(s):  
Mixed Model ◽  
System Analysis ◽  
Innovation System ◽  
Developed Countries ◽  
Economic Security ◽  
Innovation Systems ◽  
National Innovation System ◽  
Market Model ◽  
National Innovation Systems ◽  
Public Resources

The article considers the current and future systems for assessing the effectiveness of the use of state resources to create a national innovation system as a factor in improving the economic security of the state, the author develops a methodological approach to assessing the effectiveness of the use of state resources to create a national innovation system. The cyclical development of the world economy in the conditions of globalization is connected, first of all, with the change of technological structures, as well as with the provision of competitiveness for all levels of economic management. In the domestic and foreign economic literature, there is an idea of the national innovation system, which covers all types of economic objects in the country with innovations, increasing their competitiveness, and, thus, the national economy as a whole, and also directly affects the increase in the level of economic security of the country. Most developed countries and many developing countries have already established or are in the process of establishing their national innovation systems, built either on the basis of models already known and tested in other countries, or new, unique models for building innovation systems. The differences between these models of creation of national innovation systems of different countries are, both in the levels of economic objects, which are the basis of innovative breakthrough, and in the degree of use of public resources: "centralized model", based on public resources, or "market model", or a mixed model of "public-private partnership". These issues are the basis for consideration of the presented article. The methodological basis for writing the article was modern scientific research methods, including: dialectical method, method of system analysis, methods of analogy, comparative analysis, expert methods, structural-functional and normative approaches.

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