scholarly journals Fragmentation of oxime and silyl oxime ether odd-electron positive ions by the McLafferty rearrangement: new insights on structural factors that promote α,β fragmentation

2012 ◽  
Vol 47 (6) ◽  
pp. 676-686 ◽  
Author(s):  
Sébastien Laulhé ◽  
Bogdan Bogdanov ◽  
Leah M. Johannes ◽  
Osvaldo Gutierrez ◽  
Jason G. Harrison ◽  
...  
Keyword(s):  
Structural Factors ◽  
Oxime Ether ◽  
Mclafferty Rearrangement ◽  
Positive Ions

A New AID for Interpolating and Assessing Collision Strengths and Rate Coefficients

1988 ◽  
Vol 102 ◽  
pp. 107-110
Author(s):  
A. Burgess ◽  
H.E. Mason ◽  
J.A. Tully
Keyword(s):  
Significant Loss ◽  
Impact Excitation ◽  
Rate Coefficients ◽  
Electron Impact Excitation ◽  
Graphical Display ◽  
Practical Procedure ◽  
Positive Ions ◽  
Allowed Transition ◽  
Computational Errors ◽  
Existing Data

AbstractA new way of critically assessing and compacting data for electron impact excitation of positive ions is proposed. This method allows one (i) to detect possible printing and computational errors in the published tables, (ii) to interpolate and extrapolate the existing data as a function of energy or temperature, and (iii) to simplify considerably the storage and transfer of data without significant loss of information. Theoretical or experimental collision strengths Ω(E) are scaled and then plotted as functions of the colliding electron energy, the entire range of which is conveniently mapped onto the interval (0,1). For a given transition the scaled Ω can be accurately represented - usually to within a fraction of a percent - by a 5 point least squares spline. Further details are given in (2). Similar techniques enable thermally averaged collision strengths upsilon (T) to be obtained at arbitrary temperatures in the interval 0 < T < ∞. Application of the method is possible by means of an interactive program with graphical display (2). To illustrate this practical procedure we use the program to treat Ω for the optically allowed transition 2s → 2p in ArXVI.

Sociostructural Aspects of Socio-Economic Development:The role of Economic approach

2014 ◽  
pp. 86-105
Author(s):  
M. Shabanova
Keyword(s):  
Economic Development ◽  
Structural Factors ◽  
Economic Approach ◽  
Economic Agents ◽  
Socio Economic Development

The author discusses the importance of studying socio-structural factors of socio-economic development through a broader application of the economic approach. The resources of status positions of economic agents are in the spotlight. A possible platform for interdisciplinary interactions is proposed which allows to increase the contribution of both economics and sociology in improving governance at all levels.

Regional effects of inflation targeting in Russia: Factors of heterogeneity and structural inflation rates

2019 ◽  
pp. 70-89
Author(s):  
Michael I. Zhemkov
Keyword(s):  
Monetary Policy ◽  
Inflation Targeting ◽  
Structural Factors ◽  
Regional Effects ◽  
Inflation Rates ◽  
Price Growth ◽  
Effective Exchange ◽  
The Difference ◽  
Communication Policies ◽  
Structural Levels

Inflation targeting in Russia implies maintaining stable low inflation at a level of 4% throughout the country. The presence of structural factors in some regions can determine deviations from the all-Russian inflation, which can lead to different effects of monetary policy in Russian regions. In this paper, we analyze regional heterogeneity of inflation and factors of inflation deviations from the national average, estimate structural levels of inflation in the regions of Russian Federation. These estimates confirm the presence of some regional factors of inflation deviations from the all-Russian indicator, such as the difference in productivity growth of the tradable and non-tradable sectors (Balassa—Samuelson effect), effective exchange rates, real incomes and product stocks. In addition, our results confirm the presence of regions with price growth rate above and below monetary policy target. The results of this research can be used for the development of monetary and communication policies.

The Economic Theory of the Firm: A Generalization

2012 ◽  
pp. 41-66 ◽  
Author(s):  
M. Storchevoy
Keyword(s):  
Economic Theory ◽  
General Theory ◽  
Contract Theory ◽  
Theory Of The Firm ◽  
Material Structure ◽  
Structural Factors ◽  
Boundaries Of The Firm ◽  
Opportunistic Behaviour ◽  
New Variant

The paper deals with development of a general theory of the firm. It discusses the demand for such a theory, reviews existing approaches to its generalization, and offers a new variant of general theory of the firm based on the contract theory. The theory is based on minimization of opportunistic behaviour determined by the material structure of production (a classification of ten structural factors is offered). This framework is applied to the analysis of three boundaries problems (boundaries of the job, boundaries of the unit, boundaries of the firm) and five integration dilemmas (vertical, horizontal, functional, related, and conglomerate).

Ethnic niching in a segmented labour market: Evidence from Spain

2012 ◽  
Vol 9 (3) ◽  
pp. 249-262 ◽  
Author(s):  
Mikolaj Stanek ◽  
Alberto Veira
Keyword(s):  
Social Capital ◽  
Labour Market ◽  
Significant Role ◽  
Immigrant Workers ◽  
Structural Factors ◽  
Immigrant Communities ◽  
Logit Models ◽  
Human And Social Capital

Using the Spanish National Immigrant Survey (NIS-2007) we identify the ethnic niches where workers from five main immigrant communities concentrate. We then implement logit models in order to assess how structural factors and human and social capital variables affect the odds of working in these niches. We observe that the strong segmentation of the Spanish labour market strongly favours the concentration of immigrants in certain occupational niches. Nevertheless, variables related to human and social capital still play a significant role in the placement of immigrant workers in different niches, all of which are not equally attractive. 

Migration and family change in Egypt: a comparative approach to social remittances

2013 ◽  
Vol 10 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Lucile Gruntz ◽  
Delphine Pagès-El Karoui
Keyword(s):  
Public Discourse ◽  
Comparative Approach ◽  
Structural Factors ◽  
Host Countries ◽  
Return Policies ◽  
Social Remittances ◽  
Power Set ◽  
Gender Ideals ◽  
Gulf States ◽  
And Gender

Based on two ethnographical studies, our article explores social remittances from France and from the Gulf States, i.e. the way Egyptian migrants and returnees contribute to social change in their homeland with a focus on gender ideals and practices, as well as on the ways families cope with departure, absence and return. Policies in the home and host countries, public discourse, translocal networks, and individual locations within evolving structures of power, set the frame for an analysis of the consequences of migration in Egypt. This combination of structural factors is necessary to grasp the complex negotiations of family and gender norms, as asserted through idealized models, or enacted in daily practices in immigration and back home.

Women's rural-urban migration in Lebanon

2019 ◽  
Author(s):  
◽  
Sally N. Youssef
Keyword(s):  
Internal Migration ◽  
Low Income ◽  
Lived Experiences ◽  
Urban Migration ◽  
Structural Factors ◽  
Migrant Women ◽  
Migration Studies ◽  
Rural Urban Migration ◽  
Low Income Women ◽  
The Impact

Women’s sole internal migration has been mostly ignored in migration studies, and the concentration on migrant women has been almost exclusively on low-income women within the household framework. This study focuses on middleclass women’s contemporary rural-urban migration in Lebanon. It probes into the determinants and outcomes of women’s sole internal migration within the empowerment framework. The study delves into the interplay of the personal, social, and structural factors that determine the women’s rural-urban migration as well as its outcomes. It draws together the lived experiences of migrant women to explore the determinants of women’s internal migration as well as the impact of migration on their expanded empowerment.

Localization of Ethnic Groups in the Regions as a Factor in Cross-Regional Variations in Voting for United Russia

2020 ◽  
Vol 5 (2) ◽  
pp. 131-153
Author(s):  
Eleonora Minaeva ◽  
Petr Panov
Keyword(s):  
Ethnic Groups ◽  
Russian Federation ◽  
Political Mobilization ◽  
Structural Factors ◽  
Regional Variations ◽  
Political Machines ◽  
Ethnic Networks ◽  
Electoral Authoritarianism ◽  
Administrative Unit ◽  
The Russian Federation

Abstract In the context of electoral authoritarianism, political mobilization is likely to be a more reasonable explanation of cross-regional variations in voting for the party of power than the diversity of the regions’ policy preferences. In the Russian Federation, the political machines which coordinate various activities aimed at mobilizing people to vote for United Russia demonstrate different degrees of effectiveness. This article examines the structural factors that facilitate machine politics focusing on ethnic networks. Although strong ethnic networks are more likely to arise if the members of an ethnic group live close to each other, and at the same time separately from other ethnic groups, so far researchers have neglected to consider the localization of ethnic groups within the territory of an administrative unit as a factor. In order to fill the gap, we have created an original geo-referenced dataset of the localization of non-Russian ethnic groups within every region of the Russian Federation, and developed special GIS (geographic information systems) techniques and tools to measure them in relation to the Russian population. This has made it possible to include the localization of ethnic groups as a variable in the study of cross-regional differences in voting for United Russia. Our analysis finds that the effect of non-Russians’ share of the population on voting for UR increases significantly if non-Russian groups are at least partially geographically segregated from Russians within a region.

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