Corporate Entrepreneurship of Emerging Market Firms: current research and future directions

Purpose – The purpose of this paper is to examine the current state of corporate entrepreneurship (CE) of emerging market firms (EMFs) and provide direction for future research on the topic. Design/methodology/approach – The authors specifically review the recent literature between the years 2000 and 2019 on CE with the keywords “corporate entrepreneurship,” “emerging economies” and “emerging countries” published in the Australian Business Deans Council list journals. The authors review the existing literature about CE in emerging markets, summarize current achievements and present an agenda for future research. Findings – Based on the review, the authors categorized the macro and micro contexts of CE and summarized the current articles on CE in emerging markets within each macro and micro context. The authors conclude that despite the abundance of research on CE that investigates the three prongs of CE in terms of innovation, strategic renewal and new venturing in developed market contexts, there is a scarcity of literature that focuses on CE in emerging markets from a holistic perspective. Originality/value – While there is an abundance of literature review on CE in general in terms of the drivers of the construct, the contexts contributing to it and the outcomes, the reviews are lacking about CE specifically within the context of emerging markets. Emerging markets vary from developed markets institutionally, economically, culturally, socially and technologically. However, the questions of how these differences impact the CE activities, as it relates to innovation, venturing and strategic renewal in EMFs, and how these differences provide incentives or hinder the activities that contribute to CE remain mostly unanswered. This paper reviewed the research on CE and emerging market contexts from 2000 to present. It targets to provide a better understanding of the current achievement on this topic and what to be done in the future

Depth of Cracking beneath Impact Craters: New Constraint for Impact Velocity

Both small-scale impact craters in the laboratory and less than 5 km in diameter bowl-shaped craters on the Earth are strength (of rock) controlled. In the strength regime, crater volumes are nearly proportional to impactor kinetic energy. The depth of the cracked rock zone beneath such craters depends on both impactor energy and velocity. Thus determination of the maximum zone of cracking constrains impact velocity. We show this dependency for small-scale laboratory craters where the cracked zone is delineated via ultrasonic methods. The 1 km-deep cracked zone beneath Meteor Crater is found to be consistent with the crater scaling of Schmidt (1) and previous shock attenuation calculations

Exploring the Evolution of Scientific Networks of Biotechnology Firms

Despite decades of network research, the crucial question, “How do networks evolve?” has not been sufficiently explored. We explore this question by analyzing the co-authorship networks in the U.S. biotechnology firms. Specifically, from network management and network inertia perspectives, we argue that structural changes in the firms’ co-authorship networks are dependent on the specific characteristics of firms’ initial networks. Longitudinal analysis of the U.S. biotechnology firms over a span of seventeen years largely supports our arguments. Overall, we find that firms’ existing tie-specific characteristics in the form of a firm’s existing network size, tie strength, and the knowledge quality carried through these ties constitute significant determinants of network evolution

Nazım restleşmesi

Taha Toros Arşivi, Dosya Adı: Nazım Hikmetİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Prens Sabahaddin Bey:Hayatı-Şahsiyet-İlmi Hüviyeti

Taha Toros Arşivi, Dosya Adı: Prens Sabahattin. Not: Gazetenin "Türk Büyükleri" köşesinde yayımlanmıştır.İstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Housing for the aging population

Based on the concept of 'aging in place,' design of houses in the past years are explored. Design features in the built environment become barriers for aging people with functional limitations. Initially, houses were designed according to the required needs of the user with the physical limitations. Later, adaptable house design was introduced that allows the house to meet the specific needs of the user, while maintaining the appearance of the house until more obvious accessibility features are needed. Today, 'design for all' is recognised as a tool for ensuring physical accessibility for aging people. The holistic perspective embedded in the universal design theory should be systematically and consistently developed during the design process. © European Group for Research into Elderly and Physical Activity (EGREPA) 2007

Öksüz:Nazım'a mahkeme engeli var

Taha Toros Arşivi, Dosya Adı: Nazım Hikmetİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Influence of synthesis parameters on the properties of ZSM-5 & on their catalytic activity for 1-butene isomerization

Thesis (Master)--Izmir Institute of Technology, Chemical Engineering, Izmir, 2002Includes bibliographical references (leaves: 63-66)Text in English; Abstract: Turkish and Englishxi, 66 leavesThe synthesis and preparation of active and selective zeolite catalysts (H-ZSM-5 and H-ZSM-22) for the skeletal isomerization reaction of 1-butene to iso-butene were investigated.H-ZSM-5 zeolite catalysts were synthesized by varying the synthesis time (3, 6, 12, 24, 48 and 72 h), stirring mode (static, rotational), the initial SiO2/Al2O3 ratio (15 , 30, 70) and SiO2/TPABr (Tetrapropylammonium bromide) ratio (3,3; 5,5; 12,5) of the hydrogel.A synthesis work for H-ZSM-22 type zeolite materials was also carried out both in static and rotational mode.Catalytic activity tests were performed in a constructed fixed bed tubular quartz reactor system at 440 and 375oC at weight hourly space velocities (WHSV) of 22 and 11 h-1.The X-Ray Powder Diffraction patterns and Scanning Electron Microscopy images of ZSM-5 zeolites showed that the particle size and phase purity of ZSM-5 increased with increase in synthesis time.The XRD pattern of Na-ZSM-5 zeolite synthesized by the static mode showed a higher degree of crystallization than the rotational synthesis.The sample synthesized with high Al content in the initial hydrogel (SiO2/Al2O3.15) showed less crystallization than the samples synthesized with low Al content.Increasing Si/Al ratio in the synthesis hydrogel resulted in an increase in the surface area (533 m2/g).TPABr content was found to be an important factor in the crystallization of ZSM-5 zeolites.Lowest TPABr content resulted in an amorphous phase.Increase in the organic cation content enhanced the crystallization, and larger size ZSM-5 crystals with higher phase purity and surface area were achieved. The crystal phase obtained from the hydrogel which was prepared for the synthesis of ZSM-22, were affected significantly by the synthesis mode.The catalysts prepared were tested for isomerization of 1-butene at 440oC and 22h-1 WHSV.It was found that the hydrogel composition highly influenced the catalytic properties of H-ZSM-5 giving a range of conversion and selectivity for iso-butene.Al rich zeolite (initial SiO2/Al2O3.15) showed very low selectivity (2%).This was attributed to the higher acidity of this zeolite. In contrast the samples having medium and high SiO2/Al2O3 ratios 30 and 70 gave high selectivity (52% and 56% respectively) and yield (26% and 28% respectively) under the same reaction conditions.The sample with initial SiO2/Al2O3.30, SiO2/TPABr. 3.3 gave the highest yield to iso-butene (28%) under the same reaction conditions (440oC , 22h-1). Reaction at a lower temperature (375oC) increased iso-butene yield to 32% by suppressing the byproduct formation. Decreasing the WHSV (11 h-1) increased conversion from 40% to 48% and giving yield of 32% iso-butene. The test for long time on stream (24 h) to asses catalytic deactivation, showed slight increase in the yield of iso-butene (%33)

A Genetic Epidemiologic Study of Lipids and Depressive Symptoms

__Abstract__ In 1719, Hensing published the first monograph on the chemical composition of the brain, in which he isolated phosphorus from cerebral tissue. His work is considered a cornerstone of modern neurochemistryl. One century later, Vauquelin demonstrated that the phosphorus was actually bound to fat in the brain2. Meanwhile, cholesterol, a marker for all lipoproteins, was first discovered in bile and in gallstones by Poulletier de Ia Salle in 17693 and then rediscovered in 1815 by Chevreul, who named it"cholesterine"4.1n 1823, Chevreul's work resulted in his masterpiece on lipids" Recherches chimiques sur /es corps gras d'origine animate" where he described for the first time several fatty acids (margaric, oleic, stearic, butyric and caproic acids), including isovaleric acid (he named it"acide phocenique"), the first branched-chain fatty acid to be isolated from the head oil of dolphins and from porpoise oi15. Ten years later, in 1833, Boudet found cholesterol in blood6• Finally, in 1884, Johann Ludwig Wilhelm Thudichum published another fundamental work"A treatise on the chemical constitution of the brain'; in which he described the presence of sphinosine in brain, but also the presence of a choline and sphingosine containing phospholipid without glycerol, which he named sphingomyelin. He additionally described the presence of cerebrosides and sulfatides in brain extracts and isolated cephalin (phosphatidylethanolamine) as a phospholipid distinct from lecithin (phosphatidylcholine)

A priority-based 'design for all' approach to guide home designers for independent living

Cataloged from PDF version of article.The aim is to provide a priority-based design for all' approach list that can be used as a guide in the architectural design process for independent living of the home users. It is important to prioritize design for all' factors and their items as well as the significant differences among adults, elderly and adults with physical disability and visual impairments for the design of homes. A survey was conducted with 161 participants, including adults, elderly and adults with physical disabilities and visual impairments. The results of a factor analysis test identified six high-loaded (adequate illumination level, ease of use in kitchen, adequate space for approach and use, adequate contrast between essential information and its surroundings, ease of use in accessories and functional vertical circulation) and three low-loaded factors (provision of privacy and safety in bathroom, safety of floors and accessibility to all spaces). Multiple comparison tests were done in order to determine the group differences in each prioritized factor for diverse users. Furthermore, a priority-based list with the characteristic features of the design for all' approach for independent living is developed as a guide for home designers