Digital methods in a post-API environment

ABSTRACT

Qualitative and mixed methods digital social research often relies on gathering and storing social media data through the use of APIs (Application Programming Interfaces). In past years this has been relatively simple, with academic developers and researchers using APIs to access data and produce visualisations and analysis of social networks and issues. In recent years, API access has become increasingly restricted and regulated by corporations at the helm of social media networks. Facebook (the corporation) has restricted academic research access to Facebook (the social media platform) along with Instagram (a Facebook-owned social media platform). Instead, they have allowed access to sources where monetisation can easily occur, in particular, marketers and advertisers. This leaves academic researchers of digital social life in a difficult situation where API related research has been curtailed. In this paper we describe some rationales and methodologies for using APIs in social research. We then introduce some of the major events in academic API use that have led to the prohibitive situation researchers now find themselves in. Finally, we discuss the methodological and ethical issues this produces for researchers and, suggest some possible steps forward for API related research.     

Digitalization in the financial industry: A contingency approach of entrepreneurial orientation and strategic vision on digitalization

Technology is rapidly changing the financial industry. Banks, in particular, are faced with a shift from traditional, interpersonal forms of service to digital financial services. These digital technologies are more and more becoming today’s standard in the banking sector, they challenge traditional business models, and they provide opportunities for banks to capitalize on. Building on the concept of entrepreneurial orientation (EO), this study of banks in Germany, Switzerland, and Liechtenstein aims at developing insights that explain how banks can use the tactics and strategies associated with EO to achieve superior performance in the digitalization age. The results from a survey in 102 banks show that: 1) banks that display high levels of EO report a higher level of performance, and 2) the relationship between a banks’ strategic vision on digitalization, and performance is moderated by EO. These results indicate that the sheer level of the digitalization of a bank does not affect profitability. Instead, in this time of technological change banks should develop a clear vision on digitalization that is characterized by innovation, being ahead of the competition, and a willingness to take risks.     

Die Schere öffnet sich

Recent decades have witnessed some extraordinary increases of income richness in some countries. Even though many consider Germany to be different, recent research has found a strong increase of rich income households in Germany, as well. However, Germany’s data infrastructure on rich households is comparatively weak so that little is known on the causes of higher richness headcounts. This article discusses research and possible causes of the recent increase of household richness using a decomposition of unconditional quantile regressions and data from the German Socio-economic Panel (GSOEP). Comparing most recent data and the early 1990s after reunification, the most striking result is that the upper half of the German income distribution was polarized most by taxes and social security contributions which reinforce labor market related developments.     

Heine process as a q-analog of the Poisson process—waiting and interarrival times

In this study, we introduce the Heine process, {X_q(t), t > 0}, 0 < q < 1, where the random variable X_q(t), for every t > 0, represents the number of events (occurrences or arrivals) during a time interval (0, t]. The Heine process is introduced as a q-analog of the basic Poisson process. Also, in this study, we prove that the distribution of the waiting time W_{ν, q}, ν ? 1, up to the νth arrival, is a q-Erlang distribution and the interarrival times T_{k, q} = W_{k, q} ? W_{k ? 1, q},?k = 1, 2, …, ν with W_{0, q} = 0 are independent and equidistributed with a q-Exponential distribution.     

The physical activity-mediated Demand–Control (pamDC) model: Linking work characteristics,leisure time physical activity,and well-being

Only recently has research begun to investigate the interplay between work characteristics, leisure time physical activity (LTPA), health, and well-being. So far, however, this research lacks a theoretical foundation. In this article, we introduce the physical activity-mediated Demand–Control (pamDC) model as a new theoretical framework. The two key ideas of the pamDC model are (1) that job demands and job control affect LTPA and (2) that LTPA partially mediates the effects of job demands and job control on health and well-being. We present eight propositions explaining how work characteristics affect LTPA, health, and well-being. For each of these propositions, we discuss empirical evidence and theoretical foundations. We then sketch a research agenda on how to adopt the pamDC model as a new theoretical framework for future research linking work characteristics, LTPA, and health. Finally, we discuss the practical implications of our new model.     

Klassenspezifische Wahlabstinenz – Spielt das Vertrauen in politische Institutionen eine Rolle?

This article aims at an analysis to what extent class-differences in non-voting—more precisely: non-voting intention—can be explained referring to the factors of trust in institutions. What is the link between a lack of trust in state institutions and the intention to abstain from voting? Are there parallel class differences in all of these aspects? Data base is a cumulated ALLBUS data-set (1984, 1994, 2002, 2008). Results indicate class differences in non-voting intention and trust in political institutions—with lowest scores for lowly-skilled working class. Multivariate models show that class-differences in non-voting intention can be explained only to a rather small extent by class-specific trust in institutions. Looking at the time periods, an increasing distance between lowly-skilled working class and the political system can be recognised.     

Does marriage affect men’s labor market outcomes? A European perspective

Does marriage make men more productive, or do more productive men marry? Previous studies have reached different conclusions but have also been conducted using different methodologies in different countries and in different time periods. We use two sources of European panel data (spanning the years 1994–2001 and 2003–2007) to assess the relationship between marriage and labor market outcomes. By using data from 12 countries over a 13 year period, we are able to investigate the impact of marriage in different country groups and across time. We find that selection into marriage accounts for most of the differences in hours worked and wages between married and non-married men. With respect to wages we note that while the difference between married and non-married males has increased over time, the actual effect of marriage has disappeared.     

Simulation of close-to-reality population data for household surveys with application to EU-SILC

Statistical simulation in survey statistics is usually based on repeatedly drawing samples from population data. Furthermore, population data may be used in courses on survey statistics to explain issues regarding, e.g., sampling designs. Since the availability of real population data is in general very limited, it is necessary to generate synthetic data for such applications. The simulated data need to be as realistic as possible, while at the same time ensuring data confidentiality. This paper proposes a method for generating close-to-reality population data for complex household surveys. The procedure consists of four steps for setting up the household structure, simulating categorical variables, simulating continuous variables and splitting continuous variables into different components. It is not required to perform all four steps so that the framework is applicable to a broad class of surveys. In addition, the proposed method is evaluated in an application to the European Union Statistics on Income and Living Conditions (EU-SILC).     

A DEA Framework to Assess the Efficiency of the Software Requirements Capture and Analysis Process*

In this paper a theoretical framework to assess the efficiency of the Requirements Capture and Analysis (RCA) process in software development is introduced. Although it is widely recognized that successful implementation of the first stages of the software development process is critical for the overall development process, RCA efficiency assessments have not been given much attention. The presented theoretical framework to assess RCA efficiency follows a production approach to model the early stages of a software project. An approach based on Data Envelopment Analysis that utilizes the proposed framework to isolate the effects of exogenous factors, such as the environment or the type of project, on the project's RCA efficiency is also presented. Finally, the applicability of the methodology through an exploratory empirical study is demonstrated, and managerial implications are discussed.