Inference ony>y o by using a correlated variable: A three decision approach

Summary In an extension of the two decision approach [Bauer, Scheiber andWohlzogen, 1975] a Bayes solution is aimed at for the three decisiony>y _o,yy _o or no classification on the basic of the measurement of a positively correlated random variableX, which can be measured more easily and/or with smaller expense. Assuming a bivariate normal distribution forX andY optimal decision regions for the measuredx are derived in the case of constant or exponentially increasing losses.

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Zusammenfassung In Erweiterung des Zwei-Entscheidungsproblems [Bauer, Scheiber undWohlzogen, 1975] wird eine Bayes-Lösung für die drei Entscheidungeny>y ₀,yy ₀ oder keine Zuordnung aufgrund der Messung einer mitY positiv korrelierten, einfacher und/oder billiger zugänglichen ZufallsvariablenX angestrebt. Optimale Entscheidungsbereiche für die Messungenx werden bei Voraussetzung einer bivariaten Normalverteilung fürX undY unter der Annahme konstanter oder exponentiell wachsender Verluste bestimmt.

     

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Tax Avoidance and the Implications of Weak Internal Controls

I examine whether corporate tax avoidance is associated with internal control weaknesses (ICWs) disclosed under the Sarbanes‐Oxley Act (SOX). ICWs disclosed under SOX are frequently related to a firm's tax function. When pervasive ICWs exist, the likelihood increases that these frequent tax‐related ICWs spill over from financial reporting issues to tax avoidance objectives. Thus, my research helps corporate stakeholders understand the implications of internal controls beyond simply financial reporting objectives. Results indicate that, on average, firms with a tax‐related ICW have a 4 percent higher three‐year cash effective tax rate relative to firms without any such weaknesses. Further estimates reveal that this negative relation stems from pervasive, company‐level tax ICWs. Analysis of remediation suggests a causal link. I find that after remediating tax‐related ICWs, firms report higher levels of tax avoidance in the future. Broadly, these findings support that internal control quality represents a proxy for internal governance, and thus the strength of alignment between managers and shareholders. Furthermore, tax‐related internal controls represent an important underlying determinant of tax avoidance with significant cash flow effects, and implications beyond financial reporting.     

Adaptation strategies to increase advertisement effectiveness in digital media

Personalization can break through the information clutter in digital media and increase advertising effectiveness. However, the term personalization refers to many different adaptation strategies, each of which lead to distinct functional requirements for adaptive advertising systems: additionally, these adaptation strategies can affect consumers in different ways. Therefore, it is necessary to differentiate between them. To do so, we suggest the PERSIT matrix, which distinguishes between PERson-centric and SITuation-centric adaptation strategies. Studies in the field of digital-out-of-home advertising are structured using the six identified adaptation strategies for advertising. Furthermore, the PERSIT matrix supports users in making educated decisions by encouraging them to select an adaptation strategy that fits the desired advertising goals. The matrix establishes a common base of understanding between advertisers and system designers, allowing effective cross-domain communication.