As a spread phenomenon, tacit knowledge integration has been attracting more attention because of the embeddedness in social activities and interactions. Our works, as a complement to previous research, investigate tacit knowledge integration based on social networks from transactive memory systems (TMS) perspective. We focus on ties dimension (expressive tie, instrumental tie, and tie strength...

Online reviews are a dominant resource for consumer decisions but what leads users to write reviews remains largely unexamined. Extant research on user content generation has primarily focused on what motivates users to contribute content, and less on the effects of informational and social environment surrounding these users. The aim of this study is to examine how a user’s contribution to an ...

Activation of endothelial cells, important in processes such as angiogenesis, is regulated by cell surface receptors, including those in the tyrosine kinase (RTK) family. Receptor activity, in turn, can be modulated by phosphorylation, turnover, or proteolytic release of a soluble extracellular domain. Previously, we demonstrated that release of soluble tie-1 receptor from endothelial cells by ...

Consensus does not exist on the level of arterial ligation in rectal cancer surgery. From oncologic considerations, many surgeons apply high tie arterial ligation (level of inferior mesenteric artery). Other strategies include ligation at the level of the superior rectal artery, just caudally to the origin of the left colic artery (low tie), and ligation at a level without any intraoperative de...

The tie gene encodes a receptor tyrosine kinase that is expressed in the endothelium of blood vessels, particularly during embryonic development and angiogenesis in adults. We have cloned and characterized the mouse tie gene and isolated the human and mouse tie promoters. The promoter activities of human and mouse tie were analyzed using luciferase reporter gene constructs in transfected cell l...

We examine a core assumption underlying sociological accounts of “embedded” economic relationships: that such relationships constrain self-interested behavior. Our analysis is motivated by two related gaps in work that invokes this assumption of “valueconversion:” (a) the lack of systematic support for the implication that strong ties may lead a capitalist to act against her interests as she he...

Here we present an antenna-integrated QCL which can be actively and optically modulated using light in the near infrared, creating an optical nanocircuit – coupling two different frequency antennas with a nonlinear active switching element. For our design, we chose two cross-polarized bow-tie antennas with an aligned central spot. We have used detailed FDTD simulations to choose the length of e...

Mechanistic understanding of antibiotic action can yield crucial insights that aid in the design of new antibiotics. In this issue, Mukhopadhyay et al. (2008) uncover the mechanism by which the antibiotic myxopyronin inhibits bacterial RNA polymerase, suggesting a new target region in RNA polymerase for inhibitor design.

This paper uses a novel dataset and research design to examine the effects of information networks on immigrants' access to health care. The dataset consists of an unusually large sample of undocumented immigrants and contains a direct indicator of information networks-whether an immigrant was referred to health care opportunities by a strong social tie (relative or friend). This measure allows...