The moderating effect of social capital and environmental dynamism on the link between entrepreneurial orientation and resource acquisition

This study attempts to define the four constructs identified in the title and examine patterns of interaction among them. It begins by demonstrating that entrepreneurial orientation influences resource acquisition. It then puts forward a set of parameters to assess the degree to which two factors identified as social capital and environmental dynamism affect an entrepreneurial orientation resource acquisition equation. The study finds that there are relationships between all four of the constructs, but in three propositions developed in the course of discussion it puts forward issues that may be clarified by future research, which from various angles could show how entrepreneurially oriented firms react differently from more established firms in terms of their acquisition of resources and interaction with social capital and environmental dynamism. © 2011 Springer Science+Business Media B.V

Benefits and Risks of Social Capital - A Resource-Based Approach

This paper reviews concepts of social capital, resource-based view and resource dependence theory with the view of focusing on their most basic meaning as a basis for determining the benefits and risks of social capital. The benefits of social capital from the resource-based view were explored with focus on how firms achieve competitive advantage. The risks of social capital from the resource dependence perspective were likewise reviewed in the context of individual and corporate behavior. The review concluded with a recommendation for study on how to maximize benefits and reduce therisk of social capital in multidimensional situation

Microbiologically induced corrosion of 70Cu-30Ni alloy in anaerobic seawater

The corrosion of 70Cu-30Ni alloy induced by sulfate-reducing bacteria (SRB) in seawater was investigated by microscopic and electrochemical methods. Under anaerobic conditions, the SRB attached on the alloy surface formed blotchy biofilms, as observed by confocal laser scanning microscopy. Intergranular corrosion of the alloy occurred after immersion in SRB-containing seawater for 7 days, as observed by atomic force and scanning electron microscopy. Compared to the control experiment in the absence of SRB, a 330 mV shift of open-circuit potential resulted in the active direction and the polarization resistance decreased by a factor of 10. Electrochemical impedance spectroscopy data revealed that the impedance had remarkable capacitive characteristics. The response of the impedance was determined by two time constants for both the media with and without SRB. Analyses of concentrations of bacteria, metabolites, Cu, and Ni showed that the variation of concentrations of metabolites coincided with the growth of bacteria, and copper and nickel precipitated due to the production of metal sulfide, The effect of bacteria growth was the precipitation of cuprous sulfide to lower the potential of the anodic reaction and the reduction of hydrogen sulfide as the possible cathodic reaction. © 2004 The Electrochemical Society. All rights reserved.published_or_final_versio

The incremental harmonic balance method for nonlinear vibration of axially moving beams

In this paper, the incremental harmonic balance (IHB) method is formulated for the nonlinear vibration analysis of axially moving beams. The Galerkin method is used to discretize the governing equations. A high-dimensional model that can take nonlinear model coupling into account is derived. The forced response of an axially moving strip with internal resonance between the first two transverse modes is studied. Particular attention is paid to the fundamental, superharmonic and subharmonic resonance as the excitation frequency is close to the first, second or one-third of the first natural frequency of the system. Numerical results reveal the rich and interesting nonlinear phenomena that have not been presented in the existent literature on the nonlinear vibration of axially moving media. © 2004 Elsevier Ltd. All rights reserved.postprin

Live recombinant Salmonella oral vaccine against avian influenza viruses

published_or_final_versio

Entrepreneurial Orientation and Resource Acquisition: An Environmental Dynamism Perspective

This study attempts to define the three constructs identified in the title and examine patterns of interaction among them. It begins by demonstrating that entrepreneurial orientation influences resource acquisition. It then puts forward a set of parameters to assess the degree to which factor identified as environmental dynamism affect an entrepreneurial orientation resource acquisition equation. The study finds that there are relationships between all three of the constructs, but in two propositions developed in the course of discussion it puts forward issues that may be clarified by future research, which from various angles could show how entrepreneurially oriented firms react differently from more established firms in terms of their acquisition of resources and interaction with environmental dynamism

DNA methylation of microRNA genes in multiple myeloma

DNA methylation is one of the heritable epigenetic modifications, leading to repressed gene expressions and consequent phenotypic alterations without changing the DNA sequence. MicroRNA (miRNA) is a novel class of short non-coding RNA molecules regulating a wide range of cellular functions through translational repression of their target genes. Recently, epigenetic dysregulation of tumor-suppressor miRNA genes by promoter DNA methylation has been implicated in human cancers, including multiple myeloma (MM). This article presents a brief overview of the pathogenesis of MM, the role of DNA methylation in cancer biology, methods of DNA methylation analysis, miRNA biology and dysregulation of miRNAs in MM and summaries the current data on the role of DNA methylation of tumor-suppressive miRNAs in MM.postprin

Numerical solutions on fracture of piezoelectric materials by hybrid element

The cracked piezoelectric problem is observed numerically. To simulate the characteristic singularity at the crack tip, a plane piezoelectric hybrid element is derived. The new model involves displacement u, stress σo, electric displacement D and electric potential p as independent variables. The electromechanical coupling behavior of the cracked piezoelectric ceramics PZT-4 and PZT-5 is investigated. Under impermeable crack condition, the 1/√r-singularity at the crack-tip zone is exactly represented for σ and D. The efficiency of implementing the permeable crack condition is also inspected. To examine current energy release rate formulas, the path-independent integral is computed, and then a fitting formula for the energy release rate is obtained. In this paper, all the numerical results are compared with the previously reported theoretical solutions. © 2001 Elsevier Science Ltd. All rights reserved.postprin

Roles of social capital in tacit knowledge acquisition

Social capital has evolved from an interdisciplinary standpoint. Recently, interests over it have been instigated by entrepreneur literatures because of the arising need to understand its contribution to quality of resource-based management, specifically knowledge-based resources, which provides a great possibility for a successful firm performance. Nevertheless, knowledge and information, just like social capital, are multidimensional in sources and consequences. Scholars have differentiated between tacit and explicit knowledge to clearly present their argument that these two types of knowledge fit various networks of social relations for optimal performance. Therefore, an in-depth investigation of the correlation between social capital and tacit knowledge acquisition is essential to the establishment of a framework that would shed light on the implications of social relations in the corporate world

Social Network and Tacit Knowledge Acquisition: The Role of Entrepreneurs’ Social Skill.

The aim of this study is to analyze the impact of entrepreneurs’ social skills on the social network and tacit knowledge acquisition. The conclusion of the study indicates that entrepreneurs’ social skills including impression management and social perception influence fostering social networks by promoting face-to-face interactions to understand reactions, reciprocity and even motives of others. The impact of entrepreneurs’ social skills on tacit knowledge acquisition is further determined by strong social networks and preserving affable business relations of an entrepreneurial firm