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"Tie"
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Ties That Last: Tie Formation and Persistence in Research Collaborations over Time
Using a longitudinal dataset of research collaborations over 15 years at Stanford University, we build a theory of intraorganizational task relationships that distinguishes the different factors associated with the formation and persistence of network ties. We highlight six factors: shared organizational foci, shared traits and interests, tie advantages from popularity, tie reinforcement from third parties, tie strength and multiplexity, and the instrumental returns from the products of ties. Findings suggest that ties form when unfamiliar people identify desirable and matching traits in potential partners. By contrast, ties persist when familiar people reflect on the quality of their relationship and shared experiences. The former calls for shallow, short-term strategies for assessing a broad array of potential ties; the latter calls for long-term strategies and substantive assessments of a relationship's worth so as to draw extended rewards from the association. This suggests that organizational activities geared toward sustaining persistent intraorganizational task relationships need to be different from activities aimed at forging new ones.
Journal Article
Naruto
\"A new series of prose novels, straight from the worldwide Naruto franchise. Naruto's allies and enemies take center stage in these fast-paced adventures, with each volume focusing on a particular clan mate, ally, team\"-- Provided by publisher.
Book
The Effects of Asymmetric Social Ties, Structural Embeddedness, and Tie Strength on Online Content Contribution Behavior
For a social media community to thrive and grow, it is critical that users of the site interact with each other and contribute content to the site. We study the role of social ties in motivating user preference expression, a form of user content contribution, in an online social media community. We examine the role of three types of ties,
reciprocated
,
follower
, and
followee
ties, and assess whether the structural and relational properties of a user’s social network moderate the social influence effect in user contribution. A unique disaggregate level panel data set of users’ contributions and social tie formation activities from an online music platform is employed to study the impact of social ties. To address identification issues, we adopt a quasi-experimental approach based on dynamic propensity score matching. The results provide strong evidence of the influence of online network ties in online contribution behavior. We find that the influence of reciprocated ties is the greatest, followed by influence from followee ties and then follower ties. Additional analysis reveals that reciprocated and followee ties have even greater influence when they contribute new information for a focal user. Structural embeddedness and tie strength among network ties are found to amplify the effect of social contagion in online contribution. We conduct several sensitivity and robustness checks that lend credible support to our findings. The results add to the greater understanding of social influence in online contribution and provide valuable managerial insights into designs of online communities to enable greater user participation.
The online appendices are available at
https://doi.org/10.1287/mnsc.2018.3087
.
This paper was accepted by Anandhi Bharadwaj, information systems.
Journal Article
NieR: Automata : short story long
\"Short fiction in the setting of the Nier:Automata science fiction videogame series, featuring humanlike androids fighting alien machines\"-- Provided by publisher.
Book
Educational Mobility of Second-generation Turks
This volume investigates educational inequalities among children of Turkish immigrants in Austria, France, and Sweden. One of the largest immigrant groups in these countries, Turks nonetheless face discrimination and limited opportunities, and this study shows how those problems play out in education. One of its key findings is that systems that provide more favorable institutional arrangements lead to greater economic mobility in the second generation.
eBook
Discover shibori : creative techniques in natural indigo dyeing
\"Dive in and learn 35 time-tested Shibori resist dyeing techniques, from making a natural indigo vat to more advanced folding, wrapping, and stitching techniques from around the world. In this book, crafters will master three natural indigo vats then show off their dyed fabrics in six stunning projects\"-- Provided by publisher.
BOOK
Effects of geometric parameters on structural performance of drilled shaft footings
This paper presents results obtained from an experimental study focused on the impacts of geometric design parameters on the structural performance of drilled shaft footings. Large-scale tests were conducted on specimens subjected to uniform column compression and constructed with different geometric conditions permitting the examination of varied strut inclination, shaft diameter, and footing depth. The experimental results obtained confirmed that footing strength was highly dependent on strut inclination while shaft diameter affected the ultimate damage pattern. Strength calculations based on three-dimensional (3-D) strut-and-tie modeling guidelines recently developed by the authors provided less-conservative results as compared to previous recommendations and resulted in levels of accuracy consistent with those of other shear design procedures adopted in code provisions. Keywords: drilled shaft footing; pile cap; shear; strut-and-tie method; strut inclination; three-dimensional (3-D) strut-and-tie method (STM).
Journal Article
Future Quest presents
\"The Hanna-Barbera stars of the hit FUTURE QUEST series--Jonny Quest, Space Ghost, the Herculoids and many more--reunite in this all-new series! After the thrilling events of FUTURE QUEST, a new age of adventure begins! Space Ghost and his young wards Jan and Jace team up with the Herculoids to rebuild the mighty Space Force. Will they rise again to become defenders of the galaxy? Or is there something lurking in the shadows ready to stop them for good?\"-- Provided by publisher.
Book
The role of the Angiopoietins in vascular morphogenesis
s
The Angiopoietin/Tie system acts as a vascular specific ligand/receptor system to control endothelial cell survival and vascular maturation. The Angiopoietin family includes four ligands (Angiopoietin-1, Angiopoietin-2 and Angiopoietin-3/4) and two corresponding tyrosine kinase receptors (Tie1 and Tie2). Ang-1 and Ang-2 are specific ligands of Tie2 binding the receptor with similar affinity. Tie2 activation promotes vessel assembly and maturation by mediating survival signals for endothelial cells and regulating the recruitment of mural cells. Ang-1 acts in a paracrine agonistic manner inducing Tie2 phosphorylation and subsequent vessel stabilization. In contrast, Ang-2 is produced by endothelial cells and acts as an autocrine antagonist of Ang-1-mediated Tie2 activation. Ang-2 thereby primes the vascular endothelium to exogenous cytokines and induces vascular destabilization at higher concentrations. Ang-2 is strongly expressed in the vasculature of many tumors and it has been suggested that Ang-2 may act synergistically with other cytokines such as vascular endothelial growth factor to promote tumor-associated angiogenesis and tumor progression. The better mechanistic understanding of the Ang/Tie system is gradually paving the way toward the rationale exploitation of this vascular signaling system as a therapeutic target for neoplastic and non-neoplastic diseases.
Journal Article