Cumulative correspondence analysis of ordered categorical data from industrial experiments

Most studies of quality improvement deal with ordered categorical data from industrial experiments. Accounting for the ordering of such data plays an important role in effectively determining the optimal factor level of combination. This paper utilizes the correspondence analysis to develop a procedure to improve the ordered categorical response in a multifactor state system based on Taguchi's statistic. Users may find the proposed procedure in this paper to be attractive because we suggest a simple and also popular statistical tool for graphically identifying the really important factors and determining the levels to improve process quality. A case study for optimizing the polysilicon deposition process in a very large-scale integrated circuit is provided to demonstrate the effectiveness of the proposed procedure.     

What is gained and what is left to be done when content analysis is added to network analysis in the study of a social movement: Twitter use during Gezi Park

As social movements relying on the weak ties found in social networks have spread around the world, researchers have taken several approaches to understanding how networks function in such instances as the Arab Spring. While social scientists have primarily relied on survey or content analysis methodology, network scientists have used social network analysis. This research combines content analysis with the automated techniques of network analysis to determine the roles played by those using Twitter to communicate during the Turkish Gezi Park uprising. Based on a network analysis of nearly 2.4 million tweets and a content analysis of a subset of 5126 of those tweets, we found that information sharing was by far the most common use of the tweets and retweets, while tweets that indicated leadership of the movement constituted a small percentage of the overall number of tweets. Using automated techniques, we experimented with coded variables from content analysis to compute the most discriminative tokens and to predict values for each variable using only textual information. We achieved 0.61 precision on identifying types of shared information. Our results on detecting the position of user in the protest and purpose of the tweets achieved 0.42 and 0.33 precision, respectively, illustrating the necessity of user cooperation and the shortcomings of automated techniques. Based on annotated values of user tweets, we computed similarities between users considering their information production and consumption. User similarities are used to compute clusters of individuals with similar behaviors, and we interpreted average activities for those groups.     

Child-custody reform and the division of labor in the household

We investigate whether the adoption of joint-custody laws affects the amount of time that married mothers and fathers devote to market and household work. Our findings suggest that custody reform induces a reallocation of time within marriage, with mothers working more in the market and fathers working more in the home. However, fathers lower their labor-force-participation rates in response to custody reform. The patterns in the data are most easily reconciled with models that emphasize shifts in bargaining power to one household member, which is likely the father in the case of joint-custody reform.     

The influence of normative misperceptions on alcohol-related problems among school-age adolescents in the U.S

Review of Economics of the Household - Adolescents usually overestimate their peers’ alcohol use, and these misperceptions affect adolescents’ own alcohol-related behaviors. Using a...     

Joblessness and Perceptions about the Effectiveness of Democracy

Using micro data on more than 130,000 individuals from 69 countries, we analyze the extent to which joblessness of the individuals and the prevailing unemployment rate in the country impact perceptions of the effectiveness of democracy. We find that personal joblessness experience translates into negative opinions about the effectiveness of democracy and it increases the desire for a rouge leader. Evidence from people who live in European countries suggests that being jobless for more than a year is the source of discontent. We also find that well-educated and wealthier individuals are less likely to indicate that democracies are ineffective, regardless of joblessness. People’s beliefs about the effectiveness of democracy as a system of governance are also shaped by the unemployment rate in countries with low levels of democracy. The results suggest that periods of high unemployment and joblessness could hinder the development of democracy or threaten its existence.     

Turkey's Education Policies towards Syrian Refugees: A Macro‐level Analysis

This study discusses the transformation of Turkey's education policies towards Syrian refugees in three major stages. It argues that education policies in these different stages reflect the general perception of and political vision for Syrian refugees by the Turkish state, and that they are also instruments through which this political vision is materialized and declared. The remarkable evolution of Turkey's education policies towards Syrian refugees, from early policies that aimed at temporary accommodation to later policies that have aimed at full integration, needs to be understood in this framework of a changing vision in addition to the security concerns. Lastly, the article argues that, while the current strategy of complete integration of Syrians into formal education system is certainly positive, it also brings about a number of significant challenges related to the political and legal context in Turkey that will have to be handled in its realization.     

Considering social ergonomics: the effects of HIT on interpersonal relationships between patients and clinicians

This study explored physicians' interactions with EHRs to understand the qualities that contribute to patient satisfaction with their use of the technologies and patient satisfaction with physician. Video-taped observations of 100 medical consultations were used to distinguish interaction patterns between physicians and EHRs. Quantified observational methods were used to contribute to ecological validity. Ten primary care physicians and 100 patients from five clinics participated in the study. Visits were videotaped and coded using an objective coding methodology to understand how physicians interacted with electronic health records. Results indicate, a variety of EHR interaction styles may be effective in providing patient-centered care.     

Crime and International Tourism

Using a panel data set of European countries, this paper investigates the impact of crime on international tourism. Violent crimes are negatively associated with incoming international tourists and international tourism revenue indicating that international tourists consider the risk of victimization when choosing a location to visit. This impact is smaller in magnitude in Southern European countries with a coastline which are generally more attractive tourist destinations in terms of sea tourism, suggesting that victimization risk and attractiveness of the destination may be substitutable traits.     

The effects of exchange rate regimes on economic growth: evidence from propensity score matching estimates

This is the first study that employs the propensity score matching framework to examine the average treatment effect of exchange rate regimes on economic growth. Previous studies examining the effects of different exchange regimes on growth often apply time series or panel data techniques and provide mixed results. This study employs a variety of non-parametric matching methods to address the self-selection problem, which potentially causes a bias in the traditional linear regressions. We evaluate the average treatment effect of the floating exchange rate regime on economic growth in 164 countries. Time period of the quasi experiment starts in 1970, capturing the collapse of the Bretton Woods fixed exchange rate commitment system. Results show that the average treatment effect of floating exchange rate regimes on economic growth is statistically insignificant. Verifying the results with the Rosenbaum's bounds, our findings are strong and robust. The research states that there is no evidence that employing a floating exchange rate regime compared to a fixed one leads to a higher economic growth for the countries that use this particular policy.