scholarly journals A review of theoretical salt weathering studies for stone heritage

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Chiaki T. Oguchi ◽  
Swe Yu

AbstractSalt weathering can cause substantial deterioration of natural rocks, building stones, masonry materials, monuments, and engineering structures. Nearly two centuries of salt weathering studies, both theoretically and empirically, have manifested its power as well as its complexity. This paper attempts to unite the kinds of literature assess the various theories in the light of the combined information. The theoretical approaches concerning the most cited mechanisms of salt weathering such as crystallization, hydration and thermal expansion of crystalline salts are thoroughly reviewed. It is understood that there is no universally acceptable hard and sound theoretical information on this topic yet. More precise theories should be developed to elucidate the complications of the mechanisms of salt weathering as well as to interpret the results of empirical studies.

2019 ◽  
pp. 55-69 ◽  
Author(s):  
Sergey M. Drobyshevskiy ◽  
Natalia V. Makeeva ◽  
Elena V. Sinelnikova-Muryleva ◽  
Pavel V. Trunin

This paper is devoted to the estimation of welfare costs of inflation, taking into account the peculiarities of the Russian economy. Theoretical approaches that are used in the literature to analyze the costs of inflation are discussed in the paper. It also provides an overview of the empirical studies of this topic. Research found in academic literature shows that the results of quantitative estimates are extremely sensitive to the choice of the functional form of the money demand equation, as well as to assumptions that are made to simplify the analysis, some of which do not fit Russian data. As a result, we have modified the standard approaches to estimating welfare costs of inflation, taking into account the monetization growth in Russia, and provide quantitative estimates of the magnitude of welfare costs of inflation. The results indicate a significant gain for economic agents in terms of real GDP with a decrease in inflation, which is regarded as a positive effect from the inflation targeting policy.


2018 ◽  
Vol 10 (1) ◽  
pp. 43-61
Author(s):  
Martin Jurek

Abstract Objective: This paper reviews the major family business research papers that address factors related to relationship and work-to-family conflicts. Methodology: The procedure this paper applies follows recommendations for literature reviews by Fink (2010) consisting of: (1) selecting a research question (2) selecting bibliographic or article databases, (3) choosing search terms, (4) applying practical screening criteria, (5) applying methodical screening criteria, (6) doing the review and (7) synthesizing the results. Findings: The article summarizes that, although family business research is progressing in terms of theory building, it continues to lack a systematic adoption of longitudinal, cross-national and multi-theoretical approaches. To date, research on conflict in family firms remains underdeveloped in the CEE. Value Added: Outlining the state of the art of theoretical and empirical studies by applying a resource-based view. Recommendations: Application of control variables, such as size of the business, business life cycles, generational status, type of industry and various cultural settings. Furthermore, the role of communication, sibling rivalry and perceived justice of family members could be investigated more thoroughly.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Marc Berninger ◽  
Bruno Fiesenig ◽  
Dirk Schiereck

PurposeThe fundamental theory of Modigliani and Miller (1958) states that a firm's financing decisions are independent from the firm's value. Nevertheless, several empirical studies as well as theoretical approaches from the past decade impugn this relation for real markets with their immanent inefficiencies. However, these questions are rather than academic in nature: Especially the influence of macroeconomic conditions on the market perception of debt issues is from high economic importance, since the need for new liquidity usually becomes even more urgent when the economic conditions worsen.Design/methodology/approachThis paper analyzes the reaction of shareholders to the issue of debt by Latin American firms under special consideration of the macroeconomic sentiment. To do so, a sample of debt issued by Latin American companies between 2003 and 2010 is empirically examined through an event study.FindingsThe authors empirically demonstrate that specifically in Latin America, debt issuing companies show a significant underperformance during recessionary periods and an overperformance during nonrecessionary periods. These findings differ from previous results for mature capital markets. The authors conclude that not only the overall economic conditions matter to explain stock market reactions on bond issues but also the maturity of the corporate debt market plays an important role.Originality/valueThe authors provide first evidence that the previously described changes in the returns on specific stocks depending on the economic sentiment (Baker and Wurgler, 2006) are under certain conditions also present in the market for corporate debt.


Author(s):  
Andrea Grisold ◽  
Hendrik Theine

Chapter 4 reviews a focused selection of the existing research which sheds light on the role that the media play in relation to the circulation of certain sets of ideas and discourses concerning inequality issues and redistribution policies (i.e., the shaping of inequality preferences and beliefs). The main aim in this chapter is to analyse prior empirical studies which explore how this is shaped and informed by media coverage and engagement. To do so, the authors first outline the findings of survey data analyses on individuals’ perception of inequality, and their related position towards the necessity of redistribution. After that, the chapter provides a systematic overview of contemporary empirical studies which examine the media coverage of economic inequality and redistribution policies, and thus debate the role mass media play as information providers. We assess the underlying assumptions and the methodological approaches guiding the respective empirical findings, highlight the merits of this body of work and identify open questions for further research. The last part of this chapter provides a discussion of (currently rather neglected) political economy theories that offer rich theoretical approaches to study media, power, and inequality, thus an enhanced theoretically informed understanding beyond the mere empiricism.


Author(s):  
Ronald Maier

This chapter presents a concept for the evaluation of data modeling which is based on existing theoretical approaches and three empirical studies conducted or supervised by the author. The main results of these studies with respect to evaluation suggest to extend existing approaches for the evaluation of data models. It is necessary to focus more on organizational issues of data modeling, more on process instead of product quality, to consider different application scenarios of data modeling as well as to distinguish the enterprise-wide evaluation of data modeling from the evaluation of single projects using data modeling. The evaluation concept presented here focuses on the evaluation of single data modeling projects and consists of recommendations for the evaluation procedure, persons involved, instruments, the design of important organizational dimensions as well as some concrete measures of process and product quality.


2014 ◽  
Vol 25 (25) ◽  
pp. 55-67
Author(s):  
Manolis Christofakis

Abstract This paper outlines the main theoretical approaches to the role of transport in spatial organization and investigates possible new extensions at a theoretical and practical level, focusing on the analysis of transport cost. Beginning from the traditional theories of spatial distribution and the location of economic activities under transport cost, the analysis focuses on the related approaches of the new economic geography, which are based on the assumptions of the known “iceberg cost”. After that, through the presentation of indicative empirical studies, the paper attempts to clarify new issues that should be taken into account in the relevant theoretical considerations as well as in the political practice. Thus, factors such as the change of production structure in the modern economies with the production of more quality products, lower mass, and higher relative value and intangible goods, in combination with the improved transport technology, have contributed to a continuous reduction of the transport cost of raw materials and productive goods over the years. These developments along with the growing importance of cost of moving people should be taken into account in the new theoretical interrogations and the political practice of regional and urban development


Author(s):  
Yi Feng

Foreign direct investment (FDI) is a major component of globalization. Because of the important role it plays in economic growth and development, many scholars have directed their interest and knowledge to theoretical and/or empirical studies of the causes of FDI. There has been a rapidly growing body of literature that theorizes, hypothesizes, and empirically tests the determinants of FDI. There is no single theory of FDI; rather, various theories look at FDI from different angles and complement each other. Likewise, the empirical studies of FDI are incremental and experimental. The main theoretical approaches to FDI are presented, the empirical evidence gathered in the literature is introduced, and future research is discussed.


1983 ◽  
Vol 26 (3) ◽  
pp. 459-464 ◽  
Author(s):  
Jerald B. Moon ◽  
John Sullivan ◽  
Bernd Weinberg

Emperical and theoretical approaches to the assessment of Blom-Singer tracheoesophageal puncture prosthesis performance are described in this paper. The results of empirical studies provide new insights about the behavior of Blom-Singer devices. Namely, the overall average resistance (about 126 cm H 2 O/LPS) of these devices stems from two major factors: air entrance and air exit effects. The magnitudes of airway resistance for each of these factors and the relative contribution each factor makes to the total airway resistance of these prostheses are delineated. The performance of these devices and modifications thereof are shown to be characterized and predicted quite well using a one-dimensional, spring-constant mathematical model.


Author(s):  
Sara Lemos

Abstract A number of recent empirical studies have found no evidence that the minimum wage adversely affects employment. Explanations for such non-negative estimates include new theoretical approaches, empirical identification and data issues. In this paper we examine the robustness of such estimates to concerns about bias arising from the simultaneous determination of employment and the minimum wage. We use a number of novel political variables as instruments to control for this source of endogeneity. We exploit the personal characteristics of the politicians voting on minimum wage bills, their voting behavior and their electoral process. Our main conclusion is that the weak relationship between minimum wages and employment does not appear to be driven by endogeneity.


2020 ◽  
Vol 22 (3) ◽  
pp. 367-386
Author(s):  
Vasilya V. Taisheva

Among modern studies on the phenomenon of migration, of particular interest is the work studying and analyzing educational migration as one of the most popular and promising areas of migration. Despite numerous work devoted to the issue of educational migration, latter still remains the least studied migration category. In order to identify current trends and patterns of international educational migration and to trace development of theoretical constructions explaining migration process, author has conducted an analysis of more than 60 scientific publications (both theoretical and empirical studies) of foreign authors on the issues of consideration. Analysis of publications was carried out in context of a critical review of scientific theories and research concepts on educational migration. As the main theories, neoclassical theories of migration of macro (the concept of Push-Pull factors) and micro (the theory of human capital) level, transnational theory and theory of global knowledge were considered. As a result, author notes that educational migration studies are mostly aimed at studying economic aspects of migration, determinants and causes of migration, issue of highly qualified migration, processes of integration and adaptation of foreign students, new directions of student migration, transnational spaces and social migrant networks etc. Publications on the values and axiological aspects of educational migration are much less common. To sum up, based on results of the study, article reveals that vectors of educational migration studies are shaped by transformation occurring in the world and in the global educational environment that directly affects the nature of student migration flows.


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