Communication and Reputation in Procurement Auctions – Some Empirical Evidence

This paper studies the role of communication and reputation in market interactions using data from online procurement auctions. Not only positive reputation ratings but also engaging in communication increases a bidder’s probability of winning the auction. Messages are primarily used to reduce the asymmetric information associated with transactions.Communication; procurement auctions; reputation

Laying off or Not? the Influence of Framing and Economics Education

This paper provides a critical re-examination of Rubinstein's survey (Rubinstein; Economic Journal 2006), in which he questions the way economics is taught. The observations obtained in our new survey cast some doubts on the original findings, and, in particular, question Rubinstein's conjecture that our students' views on economic issues are influenced by the way we teach economics.

Game or frame? Incentives in modified Dictator Games

We use modified dictator games in which the productivity of taking or giving is varied. Subjects have to decide which of the different games will be payoff relevant in the end. We can show that the behavior of dictators does not depend on the productivity of their gifts, but that their behavior is strongly influenced by the right to choose the relevant game. If the recipients have the right to choose, the dictators become more generous

Contacts Between Locals and Migrants Among Chinese Youth: Out-group Bias and Familial Transmission

Conflicts between local and migrant populations have been ubiquitous in modern China. We examine the longer-term potentials for resolution through inter-group contact and persistence through the inter-generational transmission of preferences. Public schooling in Chinese cities provides one of the largest interventions for children with different group identities to interact extensively. We adopt the perspective that in- and out-group biased behavior structurally arises from group-conditional social preferences. By conducting experiments consisting of binary dictator allocation tasks in schools in a Chinese city, we can analyze how integrated schooling shapes the respective behavior. Surprisingly, we do not observe any negative out-group bias. In fact, local students exhibit a positive out-group bias by choosing sharing behavior more toward migrant than other local peers. This sharing behavior is most prevalent among primary school cohorts. We also do not find a higher prevalence of out-group bias among parents. However, parents make more envious choices, highlighting the potential for broader positive effects of schooling. In addition, we find strong evidence for the inter-generational transmission of preferences. Overall, these findings suggest that more directed efforts to establish contact between locals and migrants may be successful in overcoming the conflict

KENNZEICHNUNGSBASIERTER ZUGRIFF VON PROZESSMODELLEN AUF OBJEKTBESTÄNDE DES BAUWESENS

Für eine beherrschbare Koordination und Durchführung von Planungsaufgaben in Bauprojekten wird der Planungsprozess zunehmend in formalisierten Modellen – Prozessmodellen – beschrieben. Die Produktmodellforschung ihrerseits widmet sich der Speicherung von Planungsdaten in Form von objektorientierten Modellen im Rechner. Hauptaugenmerk sind dabei die Wahrung der Konsistenz und die Modellierung von Abhängigkeiten innerhalb dieses Planungsmaterials. Der Bezug zu den Akteuren der Planung wird nicht direkt hergestellt. Ein formal beschriebener Planungsprozesses kann in der Praxis noch nicht derart realisiert werden, dass ein Zugriff auf Einzelobjekte des Planungsprozesses gewährleistet ist. Bestehende Planungsunterstützungs- und Workflowmanagement-Systeme abstrahieren und ordnen das Planungsmaterial nach wie vor auf Dateiebene. Der vorliegende Artikel beschreibt eine Methode für die geeignete Verbindung von formalisierten Prozessmodellen in der Bauplanung mit den Einzelobjekten, die in den modellorientierten Objektmengen kodiert sind. Dabei wird die Zugehörigkeit bestimmter Objekte zu Plänen und Dokumenten (zum Zwecke des Datenaustauschs) nicht länger durch die physische Zuordnung zu Dateien festgelegt. Es wird ein formales Beschreibungsmittel vorgestellt, welches die entsprechende Teilmengenbildung aus der Gesamtheit der Planungsobjekte ermöglicht. Für die bisherigen Formen des Datenaustausches werden aus den Objektmodellen der Planung Teilmengen herausgelöst und physikalisch zwischen den Planern transportiert. Das neue Beschreibungsmittel hingegen erlaubt es, die Bildungsvorschrift für Objektteilmengen statt der Mengen selbst zwischen den Planern auszutauschen. Der Zugriff auf die konkreten Objekte findet dann direkt modellbasiert statt

The development of risk aversion and prudence in Chinese children and adolescents

This study experimentally evaluates the risk preferences of children and adolescents living in an urban Chinese environment. We use a simple binary choice task that tests risk aversion as well as prudence. This is the first test for prudence in children and adolescents. Our results reveal that subjects from grades 5 to 11 (10 to 17 years) make mostly risk averse and prudent choices. With respect to risk aversion behavior of 3rd graders (8 to 9 years) does not differ statistically from risk neutrality. We also find 3rd graders to make mostly prudent choices. We also find evidence for a transmission of preferences: risk aversion is significantly correlated between children and their parents. Also, prudence is significantly correlated between girls (but not boys) and their parents

Higher-order risk preferences in social settings

We study prudence and temperance (next to risk aversion) in social settings. Previous experimental studies have shown that these higher-order risk preferences affect the choices of individuals deciding privately on lotteries that only affect their own payoff. Yet, many risky and financially relevant decisions are made in the social settings of households or organizations. We elicit higher-order risk preferences of individuals and systematically vary how an individual’s decision is made (alone or while communicating with a partner) and who is affected by the decision (only the individual or the partner as well). In doing so, we can isolate the effects of other-regarding concerns and communication on choices. Our results reveal that the majority of choices are risk averse, prudent, and temperate across social settings. We also observe that individuals are influenced significantly by the preferences of a partner when they are able to communicate and choices are payoff-relevant for both of them. Electronic supplementary material The online version of this article (doi:10.1007/s10683-017-9541-4) contains supplementary material, which is available to authorized users

Determination of Effects of Modefications during Planning Processes

Usually, the co-ordination of design and planning tasks of a project in the construction industries is done in a paper based way. Subsequent modifications have to be handled manually. The effects of modifications cannot be determined automatically. The approach to specify a complete process model before project start does not consider the requirements of the construction industries. The effort of specification at the beginning and during the process (modifications) does not justify the use of standard process model techniques. A new approach is presented in the according paper. A complete process model is deducted on the basis of a core. The core consists of process elements and specific relations between them. Modifications need to be specified in the core only. The effort of specification is therefore reduced. The deduction of the complete process is based on the graph theory. Algorithms of the graph theory are also used to determine the effects of modifications during project work

Bis(1-{bis­[2-(diphenyl­phosphino­yl)eth­yl]phosphan­yl}-2-(diphenyl­phosphan­yl)ethane)dinitratoplatinum(II) methanol tetra­solvate

In the title compound, [Pt(NO3)2(C42H42O2P4)2]·4CH3OH, the Pt atom positioned on a crystallographic centre of inversion. The two symmetry-equivalent nitrate anions are weakly coordinated to the PtII ion, creating, together with four P ligand atoms, a distorted octa­hedral coordination environment. In addition, several close C—H⋯O contacts between the nitrate O atoms and phenyl H atoms are found. Hydrogen bonds from two methanol solvent mol­ecules to one of the O—P groups complete the crystal structure

Growth characterization of CHO DP-12 cell lines with different high passage histories

Heinrich C, Timo W, Christina K, Northoff S, Noll T. Growth characterization of CHO DP-12 cell lines with different high passage histories. In: Hansjörg H, ed. BMC Proceedings. BMC Proceedings. Vol 5. BioMed Central; 2011