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381.
Jessamy Perriam Andreas Birkbak Andy Freeman 《International Journal of Social Research Methodology》2020,23(3):277-290
ABSTRACTQualitative 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. 相似文献
382.
383.
Thomas Niemand J.P. Coen Rigtering Andreas Kallmünzer Sascha Kraus Adnane Maalaoui 《European Management Journal》2021,39(3):317-326
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. 相似文献
384.
Let X be a N(μ, σ 2) distributed characteristic with unknown σ. We present the minimax version of the two-stage t test having minimal maximal average sample size among all two-stage t tests obeying the classical two-point-condition on the operation characteristic. We give several examples. Furthermore, the minimax version of the two-stage t test is compared with the corresponding two-stage Gauß test. 相似文献
385.
Spiros?D.?Dafnis Andreas?N.?PhilippouEmail author Demetrios?L.?Antzoulakos 《Statistical Papers》2012,53(2):323-344
Let Z
1, Z
2, . . . be a sequence of independent Bernoulli trials with constant success and failure probabilities p = Pr(Z
t
= 1) and q = Pr(Z
t
= 0) = 1 − p, respectively, t = 1, 2, . . . . For any given integer k ≥ 2 we consider the patterns E1{\mathcal{E}_{1}}: two successes are separated by at most k−2 failures, E2{\mathcal{E}_{2}}: two successes are separated by exactly k −2 failures, and E3{\mathcal{E}_{3}} : two successes are separated by at least k − 2 failures. Denote by Nn,k(i){ N_{n,k}^{(i)}} (respectively Mn,k(i){M_{n,k}^{(i)}}) the number of occurrences of the pattern Ei{\mathcal{E}_{i}} , i = 1, 2, 3, in Z
1, Z
2, . . . , Z
n
when the non-overlapping (respectively overlapping) counting scheme for runs and patterns is employed. Also, let Tr,k(i){T_{r,k}^{(i)}} (resp. Wr,k(i)){W_{r,k}^{(i)})} be the waiting time for the r − th occurrence of the pattern Ei{\mathcal{E}_{i}}, i = 1, 2, 3, in Z
1, Z
2, . . . according to the non-overlapping (resp. overlapping) counting scheme. In this article we conduct a systematic study
of Nn,k(i){N_{n,k}^{(i)}}, Mn,k(i){M_{n,k}^{(i)}}, Tr,k(i){T_{r,k}^{(i)}} and Wr,k(i){W_{r,k}^{(i)}} (i = 1, 2, 3) obtaining exact formulae, explicit or recursive, for their probability generating functions, probability mass
functions and moments. An application is given. 相似文献
386.
Dipl.-Soz. Wiss. Carina Leesch Prof. Dr. Andreas Herrmann Dr. Jan R. Landwehr 《Zeitschrift für Betriebswirtschaft》2010,80(4):441-466
Customers often search for and choose from ordered sets. E. g., online shops present their product assortments as lists; very often the products are listed according to criteria as defined by the customers. Based on theoretical explanations it can be assumed that the rank of a product in a list effects its demand. An empirical study run in the market for used cars shows the importance of that effect. The study also reveals the most preferred rank and provides further insights for an optimal ordering of products. Furthermore, the understanding of individual decision about rank ordered products can be deepened. 相似文献
387.
Dipl.-Psych. Andreas Thomas 《Organisationsberatung, Supervision, Coaching》2010,17(3):245-254
Nowadays 360 degree feedback has more and more found its way into organisations and companies. In this context, coaching is often provided or requested as a "follow up" intervention. This means in detail that results of the peer evaluation of the feedback as well as discrepancies with the client’s self-assessment (self-perception) etc. will be discussed. The aim of this article is to show that imaginative 360 degree feedback can be integrated in individual coaching especially applying the methods of psychodrama as well as gestalt therapy even without being based on a 360 degree feedback. This method primarily provides external coaches with basic information about the organisational setup of the coachee (person to be coached) as well as information about his/her professional environment. 相似文献
388.
Is it All About Money? – Affective Commitment and the Difference Between Family and Non‐family Sellers in Buyouts 下载免费PDF全文
Oliver Ahlers Andreas Hack Kristen Madison Mike Wright Franz W. Kellermanns 《英国管理杂志》2017,28(2):159-179
In this paper we investigate private equity firm perceptions of sellers’ affective deal commitment in buyout transactions. Using a sample of 174 buyouts, we test trust, goal congruence and private equity reputation as potential antecedents of perceived deal commitment. We also examine whether and how different types of sellers, family versus non‐family firms, moderate sources of perceived affective deal commitment. In sum, we find evidence that non‐financial factors play a role in buyouts, particularly for family firm sellers. 相似文献
389.
390.
Cet article étudie de quelle façon et à quel moment les journaux, les ONG environnementales, les entreprises privées et le gouvernement convergent autour des événements environnementaux. En utilisant les données sur le déversement de pétrole BP en 2010 tirées des journaux aux États‐Unis, au Canada et en Grande‐Bretagne et des communiqués de presses de Greenpeace, du Club Sierra, de Halliburton, de Transocean, d’Exxon/Mobil et les annonce de presse de la secrétaire de presse pour le Maison Blanche, nous étudions la capacité d'un événement à faire converger des actions sociales et politiques. En concevant les événements comme des actants, nous vérifions les arguments tirés des publications sur les mouvements sociaux et sur la définition de l'agenda politique à propos du timing, de la simplicité et de la visualité afin de comprendre comment les acteurs politiques convergent. Nous observons que l'effet de convergence est lié au timing, mais pas à la simplicité ou à la visualité. This paper examines how and when newspapers, environmental nongovernmental organizations, businesses, and the government converge on environmental events. Using data on the 2010 BP Oil Spill from newspaper articles in the United States, Canada, and the United Kingdom, press releases by Greenpeace and Sierra Club, press releases by BP, Halliburton, Transocean, ExxonMobil, and Shell, and press statements by the White House Press Secretary, we examine an event's potential to trigger convergence of social and political action. By treating events as political actants, we examine arguments from the agenda‐setting and social movement literatures on timing, simplicity, and visuality to understand when political actors converge. We find that convergence is related to temporal cycles but not simplicity or visuality. 相似文献