On the Nature and Importance of Cultural Tightness-Looseness

Cross-cultural research is dominated by the use of values despite their mixed empirical support and their limited theoretical scope. This article expands the dominant paradigm in crosscultural research by developing a theory of cultural tightness-looseness, the strength of social norms and degree of sanctioning within societies, and advancing a multilevel research agenda for future research. Through an exploration of the top-down, bottom-up, and moderating impact that societal tightness-looseness has on individuals and organizations, as well as on variability across levels of analysis, the theory provides a new and complementary perspective to the values approach

Energy’s Role in the Extraversion (Dis)advantage: How Energy Ties and Task Conflict Help Clarify the Relationship Between Extraversion and Proactive Performance

While academic and practitioner literatures have proposed that extraverts are at an advantage in team-based work, it remains unclear exactly what that advantage might be, how extraverts attain such an advantage, and under which conditions. Theory highlighting the importance of energy in the coordination of team efforts helps to answer these questions. We propose that extraverted individuals are able to develop more energizing relationships with their teammates and as a result are seen as proactively contributing to their team. However, problems in coordination (i.e., team task conflict) can reverse this extraversion advantage. We studied 27 project-based teams at their formation, peak performance, and after disbandment. Results suggest that when team task conflict is low, extraverts energize their teammates and are viewed by others as proactively contributing to the team. However, when team task conflict is high, extraverts develop energizing relationships with fewer of their teammates and are not viewed as proactively contributing to the team. Our findings regarding energizing relationships and team task conflict clarify why extraversion is related to proactive performance and in what way, how, and when extraverts may be at a (dis)advantage in team-based work

Negotiating Relationally: The Dynamics of the Relational Self In Negotiations

Although negotiation research is thriving, it has been criticized as having an arelational bias—emphasizing autonomy, competition, and rationality over interdependence, cooperation, and relationality. In this article, we advance a new model of relationality in negotiation. Drawing on research in social psychology, we describe the construct of relational self-construals (RSC) and present a temporal model of RSC and negotiation. After delineating the conditions through which RSC becomes accessible in negotiation and conditions that inhibit its use, we discuss how RSC affects negotiators\u27 pre-negotiation psychological states, early and later tactics, and negotiation outcomes. We illustrate a number of distinct relational dynamics that can occur based on the dyadic composition of RSC, each of which brings distinct benefits and costs to the negotiation table. Implications for the science and practice of negotiation are discussed

Once, Twice, or Three Times as Harmful? Ethnic Harassment, Gender Harassment, and Generalized Workplace Harassment

Despite scholars’ and practitioners’ recognition that different forms of workplace harassment often co-occur in organizations, there is a paucity of theory and research on how these different forms of harassment combine to influence employees’ outcomes. We investigated the ways in which ethnic harassment (EH), gender harassment (GH), and generalized workplace harassment (GWH) combined to predict target individuals’ job-related, psychological, and health outcomes. Competing theories regarding additive, exacerbating, and inuring (i.e., habituating to hardships) combinations were tested. We also examined race and gender differences in employees’ reports of EH, GH, and GWH. The results of two studies revealed that EH, GH, and GWH were each independently associated with targets’ strain outcomes and, collectively, the preponderance of evidence supported the inurement effect, although slight additive effects were observed for psychological and physical health outcomes. Racial group differences in EH emerged, but gender and race differences in GH and GWH did not. Implications are provided for how multiple aversive experiences at work may harm employees’ well-being

Large bandwidth, highly efficient optical gratings through high index materials

We analyze the diffraction characteristics of dielectric gratings that feature a high index grating layer, and devise, through rigorous numerical calculations, large bandwidth, highly efficient, high dispersion dielectric gratings in reflection, transmission, and immersed transmission geometry. A dielectric TIR grating is suggested, whose -1dB spectral bandwidth is doubled as compared to its all-glass equivalent. The short wavelength diffraction efficiency is additionally improved by allowing for slanted lamella. The grating surpasses a blazed gold grating over the full octave. An immersed transmission grating is devised, whose -1dB bandwidth is tripled as compared to its all-glass equivalent, and that surpasses an equivalent classical transmission grating over nearly the full octave. A transmission grating in the classical scattering geometry is suggested, that features a buried high index layer. This grating provides effectively 100% diffraction efficiency at its design wavelegth, and surpasses an equivalent fused silica grating over the full octave.Comment: 15 pages, 7 figure

Culture and Egocentric Perceptions of Fairness in Conflict and Negotiation

In this article, the authors advanced a cultural view of judgment biases in conflict and negotiation. The authors predicted that disputants’ self-serving biases of fairness would be more prevalent in individualistic cultures, such as the United States, in which the self is served by focusing on one’s positive attributes to “stand out” and be better than others, yet would be attenuated in collectivistic cultures, such as Japan, where the self is served by focusing on one’s negative characteristics to “blend in” (S. J. Heine, D. R. Lehman, H. R. Markus, & S. Kitayama, 1999). Four studies that used different methodologies (free recall, scenarios, and a laboratory experiment) supported this notion. Implications for the science and practice of negotiation are discussed

Lessons from a Minimal Genome: What Are the Essential Organizing Principles of a Cell Built from Scratch?

One of the primary challenges facing synthetic biology is reconstituting a living system from its component parts. A particularly difficult landmark is reconstituting a self‐organizing system that can undergo autonomous chromosome compaction, segregation, and cell division. Here, we discuss how the syn3.0 minimal genome can inform us of the core self‐organizing principles of a living cell and how these self‐organizing processes can be built from the bottom up. The review underscores the importance of fundamental biology in rebuilding life from its molecular constituents.A primary challenge in synthetic biology is reconstituting self‐organizing systems that can undergo autonomous chromosome compaction, segregation, and cell division. Here, we discuss how the syn3.0 minimal genome sheds light on the core self‐organizing principles of living cells and how these self‐organizing processes can be built from the bottom up.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/152011/1/cbic201900249.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/152011/2/cbic201900249_am.pd

Hierarchical multi-class segmentation of glioma images using networks with multi-level activation function

For many segmentation tasks, especially for the biomedical image, the topological prior is vital information which is useful to exploit. The containment/nesting is a typical inter-class geometric relationship. In the MICCAI Brain tumor segmentation challenge, with its three hierarchically nested classes 'whole tumor', 'tumor core', 'active tumor', the nested classes relationship is introduced into the 3D-residual-Unet architecture. The network comprises a context aggregation pathway and a localization pathway, which encodes increasingly abstract representation of the input as going deeper into the network, and then recombines these representations with shallower features to precisely localize the interest domain via a localization path. The nested-class-prior is combined by proposing the multi-class activation function and its corresponding loss function. The model is trained on the training dataset of Brats2018, and 20% of the dataset is regarded as the validation dataset to determine parameters. When the parameters are fixed, we retrain the model on the whole training dataset. The performance achieved on the validation leaderboard is 86%, 77% and 72% Dice scores for the whole tumor, enhancing tumor and tumor core classes without relying on ensembles or complicated post-processing steps. Based on the same start-of-the-art network architecture, the accuracy of nested-class (enhancing tumor) is reasonably improved from 69% to 72% compared with the traditional Softmax-based method which blind to topological prior.Comment: 12pages first versio

Biogeographic history of the pantropical family Gesneriaceae with a focus on the Indian plate and diversification through the Old World

The Gesneriaceae consists of around 150 genera and c. 3750 species with a predominantly tropical and subtropical distribution across all continents. Although previous studies have proposed an American origin of Gesneriaceae, the biogeographic history of this pantropical plant family is still unclear, particularly in the Old World. To address this, we assembled the most comprehensively sampled matrix of Gesneriaceae with 143 Gesneriaceae genera and 355 species, including key samples from Sri Lanka analysed here for the first time. We generated molecular phylogenies based on four plastid gene regions (ndhF, matK, rps16 and trnL-F), obtained fossil-calibrated trees, and reconstructed ancestral areas and dispersal routes using Bayesian methods. Our results confirm the origin for the family in the Early Palaeocene (67. Ma) in the region of present-day Central America & Andean South America, and that diversity in the Old World originated from a long-distance dispersal event from South America around 59 Ma, most likely to the Indian plate, which was an island at the time. This lineage then dispersed to Malesia and later East Asia, which would ultimately become a major centre of diversity and source of many dispersals to other regions. Our results thus highlight the Indian plate as a likely key player in the early diversification of Old World Gesneriaceae, even though it is now more diverse elsewhere, and hence offer novel insights into this plant family’s dispersal routes and areas of diversification in the Old World