When Doesn't Network Embeddedness Work? The Role of Partner Choice Sets in Alliance Networks

2014 ◽  
Vol 2014 (1) ◽  
pp. 15324
Author(s):  
Jungwon Min
Keyword(s):  
Partner Choice ◽  
Alliance Networks ◽  
Network Embeddedness ◽  
Choice Sets

Saccharomyces cerevisiae Checkpoint Genes MEC1, RAD17 and RAD24 Are Required for Normal Meiotic Recombination Partner Choice

Genetics ◽  
1999 ◽  
Vol 153 (2) ◽  
pp. 607-620 ◽  
Author(s):  
Jeremy M Grushcow ◽  
Teresa M Holzen ◽  
Ken J Park ◽  
Ted Weinert ◽  
Michael Lichten ◽  
...  
Keyword(s):  
Meiotic Recombination ◽  
Mitotic Checkpoint ◽  
Partner Choice ◽  
Wild Type ◽  
Spore Viability ◽  
Checkpoint Signaling ◽  
Ectopic Recombination ◽  
Meiotic Progression ◽  
Checkpoint Genes

Abstract Checkpoint gene function prevents meiotic progression when recombination is blocked by mutations in the recA homologue DMC1. Bypass of dmc1 arrest by mutation of the DNA damage checkpoint genes MEC1, RAD17, or RAD24 results in a dramatic loss of spore viability, suggesting that these genes play an important role in monitoring the progression of recombination. We show here that the role of mitotic checkpoint genes in meiosis is not limited to maintaining arrest in abnormal meioses; mec1-1, rad24, and rad17 single mutants have additional meiotic defects. All three mutants display Zip1 polycomplexes in two- to threefold more nuclei than observed in wild-type controls, suggesting that synapsis may be aberrant. Additionally, all three mutants exhibit elevated levels of ectopic recombination in a novel physical assay. rad17 mutants also alter the fraction of recombination events that are accompanied by an exchange of flanking markers. Crossovers are associated with up to 90% of recombination events for one pair of alleles in rad17, as compared with 65% in wild type. Meiotic progression is not required to allow ectopic recombination in rad17 mutants, as it still occurs at elevated levels in ndt80 mutants that arrest in prophase regardless of checkpoint signaling. These observations support the suggestion that MEC1, RAD17, and RAD24, in addition to their proposed monitoring function, act to promote normal meiotic recombination.

scholarly journals Aspectos sobre a decisão de canais no pequeno varejo: a escolha entre o atacado e o atacarejo

2011 ◽  
Vol 4 (1) ◽  
pp. 91-104
Author(s):  
Huang Wen Hsien ◽  
Matheus Alberto Cônsoli ◽  
Antonio Carlos Giuliani
Keyword(s):  
Influence Factors ◽  
Field Research ◽  
Sao Paulo ◽  
Partner Choice ◽  
Purchase Decision ◽  
Exploratory Research ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

This article talks about purchase decision from small and medium retailers from Piracicaba Region, São Paulo State. The bibliographic and field research showed the main influence factors and decision criteria of small retailers for purchase, related to the choice between the traditional wholesale and the wholesale and retail outlet, which is a type of store that allows the wholesaler sales to sell to small or medium-sized retailers and for end consumers who are looking for the best price. The topics treated are the distribution channels, types of agents, the role of each one and the retailers' decision of purchasing. The exploratory research was applied to small and medium-sized retailers from Piracicaba Region, Sao Paulo State Countryside. From the eight case studies it was possible to identify the aspects considered relevant for retailers in the purchase decision and partner choice. Retailers were expressed by five attributes considered the most relevant, they are: convenience, variety, price, reliability and quantity.

Mijn partner is (g)een vreemde vogel : Endogamie en relatieontbinding in België

2020 ◽  
Vol 10 (1) ◽  
pp. 1-31
Author(s):  
Layla Van den Berg ◽  
Dimitri Mortelmans
Keyword(s):  
Partner Choice ◽  
Event History ◽  
Relationship Dissolution ◽  
Background Characteristics ◽  
Premarital Cohabitation ◽  
Relationship Type ◽  
Relationship Types ◽  
Cohabiting Couples ◽  
Sociale Zekerheid

Voorgaand onderzoek naar de rol van partnerkeuze in relatieontbinding toont aan dat partners die afkomstig zijn uit verschillende herkomstgroepen doorgaans een hogere kans hebben om uit elkaar te gaan. Deze onderzoeken focussen zich echter voornamelijk op huwelijken en het blijft daarom onduidelijk of dezelfde dynamieken zich ook aftekenen binnen ongehuwd samenwonende koppels en wat de rol is van voorhuwelijks samenwonen. Dit artikel bestudeert de samenhang tussen partnerkeuze en relatieontbinding voor een steekproef van koppels die voor de eerste keer huwden of ongehuwd gingen samenwonen tussen 1999 en 2001. De data zijn afkomstig uit de Belgische Kruispuntbank voor Sociale Zekerheid en geven informatie over de ontbindingskansen van gehuwd en ongehuwd samenwonende koppels met minstens één partner van Belgische, Zuid‐Europese, Turkse, Marokkaanse, Congolese, Burundese of Rwandese afkomst. Aan de hand van survival analyse en multivariate event history modellen gaat dit onderzoek na of ontbindingskansen verschillen tussen endogame en gemengde koppels en of deze dynamieken gelijkaardig zijn over de verschillende relatietypes heen. De resultaten geven aan dat endogame koppels de laagste ontbindingskansen hebben als het gaat om een huwelijk zonder substantiële periode van voorhuwelijks samenwonen. Voor koppels die ongehuwd samenwonen of huwden na een periode van ongehuwd samenwonen zien we dit patroon echter niet terugkomen en zijn verschillen naar partnerkeuze beperkter of zijn het net de gemengde koppels die lagere ontbindingskansen hebben. Na controle voor relevante achtergrondkenmerken blijkt vooral voor gemengde koppels de kans op relatieontbinding sterk te verschillen naar relatietype. Abstract :  Previous studies on the role of partner choice in relationship dissolution have shown that partners who come from different ethnic groups usually have a higher chance of separating. However, these studies focus on marriages and it therefore remains unclear whether the same dynamics can be seen in unmarried cohabiting couples or what the exact role of this period of premarital cohabitation is. This article examines the relationship between partner choice and relationship dissolution in a sample of couples who married for the first time or started living together without being married between 1999 and 2001. The data comes from the Belgian Crossroads Bank of Social Security and give information on union dissolution among married and unmarried cohabiting couples with at least one partner of Belgian, Southern European, Turkish, Moroccan, Congolese, Burundian or Rwandan descent. Based on survival analysis and multivariate event history models, this study examines whether dissolution chances differ between endogamous and mixed couples and whether or not these dynamics are different across relationship types. The results indicated that endogamous couples have the lowest chance of dissolution when it comes to marriages without a substantial period of premarital cohabitation. For couples who were unmarried cohabiting or married after a period of unmarried cohabitation, we did not find this pattern and differences in partner choice are more limited or we observe the mixed couples to have elevated dissolution chances. After checking for relevant background characteristics it turns out that especially for mixed couples, the chance of relationship dissolution appears to differ strongly according to relationship type.

The double-edged sword of external search in collaboration networks: embeddedness in knowledge networks as moderators

2019 ◽  
Vol 23 (10) ◽  
pp. 2135-2160 ◽  
Author(s):  
Xiaoxiao Shi ◽  
Qingpu Zhang ◽  
Zuolong Zheng
Keyword(s):  
Knowledge Network ◽  
Collaboration Network ◽  
Network Centrality ◽  
Collaboration Networks ◽  
Firm Innovation ◽  
Content Type ◽  
Network Embeddedness ◽  
Practical Implications ◽  
Innovation Outcomes

Purpose The purpose of this paper is to analyze the inverted U-shaped relationship between external search in the collaboration network and firm innovation outcomes. It also seeks to explore whether these curvilinear relationships are moderated by the network centrality and structural holes in the knowledge network. Design/methodology/approach In this empirical research, the authors collected a sample of patents in the smartphone industry over the period of 2000-2017. Then the authors examined the direct roles of external search breadth and depth in the collaboration network and the moderating role of network embeddedness in the knowledge network by using negative binomial regression. Findings Results found that external search in the collaboration network contributes more to firm innovation outcomes when the breadth and depth of the external search are moderate rather than high or low. Furthermore, both network centrality and structural holes in the knowledge network have positive effects on the external search breadth – innovation outcomes and external search depth – innovation outcomes relationships. Research limitations/implications The authors collected the patent data within the single industry and excluded other types of industries. This may limit the generalization of the findings. Practical implications The paper has practical implications for adopting appropriate search strategies in the collaboration network and developing a better understanding of the effect of network embeddedness in the knowledge network on firm innovation outcomes. The findings suggest future directions for technology-intensive industries to improve their innovation output. Originality/value This study adds value to open innovation literature by pointing out a curvilinear relationship (inverted U-shaped) between external search breadth/depth and innovation outcomes in collaboration networks, in contrast to studies focused on firms’ external collaboration strategies in a certain industry context. Furthermore, this study reinforces the key contingent role of embeddedness in knowledge networks. This study provides a valuable theoretical framework of innovation outcome determinants by connecting the network perspective of open innovation theory with an embeddedness view.

Structural network embeddedness and firm incremental innovation capability: the moderating role of technology cluster

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xiaoxiao Shi ◽  
Lu Lu ◽  
Wei Zhang ◽  
Qingpu Zhang
Keyword(s):  
Empirical Research ◽  
Incremental Innovation ◽  
Central Position ◽  
Innovation Capability ◽  
Patent Data ◽  
Content Type ◽  
Network Embeddedness ◽  
Structural Network ◽  
Moderating Role

Purpose This paper aims to propose the following questions: How do structural network embeddedness influence firms’ incremental innovation capability? Does technology cluster moderate the relationships between them? Design/methodology/approach In this empirical research, the authors collected a sample of patent data in the smartphone industry over the period of 2000-2018. Then, the authors examined the direct roles of structural network embeddedness on firms’ incremental innovation capability and the moderating role of technology cluster by using ordinary linear squares regression. Findings The empirical results show that occupying the central position positively affects firms’ incremental innovation capability, and clustering strengthens this linear relationship. Furthermore, bridging structural holes has an inverted U-shaped effect on incremental innovation capability, and clustering positively moderated this nonlinear relationship, while bridging ties across different clusters plays a negative moderation role in this relationship. Originality/value This empirical research provides new insights into whether and how firms can grasp the benefits of structural network embeddedness to conduct incremental innovations and the moderation effects of technology cluster contingencies. It further contributes to the structural network embeddedness–incremental innovation capability issue by extending its research context to the smartphone industry.

Appropriating value from industrial buyer-seller relationships by leveraging network capability

2019 ◽  
Vol 57 (11) ◽  
pp. 2911-2939 ◽  
Author(s):  
Jing Zhang ◽  
Mingfei Du
Keyword(s):  
Information Acquisition ◽  
Mediating Effect ◽  
Network Resources ◽  
Business Network ◽  
Value Appropriation ◽  
Content Type ◽  
Network Embeddedness ◽  
Network Capability ◽  
The Relationship

PurposeThe purpose of this paper is to investigate how a B2B firm can improve its value appropriation from industrial buyer–seller relationships by leveraging its network capability, as well as the curvilinear moderating role of the firm’s network embeddedness.Design/methodology/approachThis paper empirically examines seven research hypotheses about the relationship between network capability and value appropriation and the curvilinear moderating effect of network embeddedness based on a questionnaire survey among 232 Chinese B2B firms.FindingsIt is found that network capability helps sellers appropriate value from industrial buyer–seller relationships via information acquisition, network resources and power. The mediating effect of network resources is the highest, followed by power and information acquisition. In addition, a seller’s embeddedness in a business network positively moderates the network capability and value appropriation link in an inverted U-shaped way.Originality/valueThe study makes significant contributions to the literature on value appropriation and also provides insightful implications for B2B firms to capture value from industrial buyer–seller relationships by leveraging network capability and network embeddedness.

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