bluuebunny/crossref_metadata_2025_split huggingface dataset:
Surface modification of a guided tissue regeneration membrane using tetracycline‐containing biodegradable polymers
Authors: Lee Sang‐Bae , Lee Doug‐Youn , Lee Yong‐Keun , Kim Kyoung‐Nam , Choi Seong‐Ho , Kim Kwang‐Mahn 
Published: February 2008

AbstractThere are several considerations when choosing a barrier membrane for use with guided tissue regeneration (GTR) to treat periodontal diseases: biocompatibility, cell‐occlusiveness, space‐maintaining ability, tissue integration, and clinical manageability can all affect success. Our laboratory developed drug‐releasing and space‐maintaining membranes for use with GTR to provide effective periodontal therapy. Tetracycline is used in periodontal therapy because of its antibacterial activity and because it enhances tissue regeneration by increasing osteoblast and anticollagenolytic activity. Here, tetracycline‐containing solutions of the polymers poly(L‐lactide), poly(L‐lactide‐co‐glycolide), and poly(glycolide‐co‐caprolactone) were used to coat collagen sponges using a spray‐coating technique. The surface structure and morphology of the prepared membranes were characterized and the drug release, antibacterial effect, and mechanical properties were evaluated. All membranes comprised double layers: a dense coated layer and a collagen layer. The collagen layer had a porous surface and interconnected pores. In contrast, the coated layer was a thin film without pores and had a low concentration of polymer. This biodegradable, polymer‐coated collagen membrane retained its drug release properties as well as antibacterial effect and had better mechanical integrity than uncoated collagen sponge. Taken together, these results suggest that tetracycline‐loaded membranes might enhance GTR efficacy. Copyright © 2008 John Wiley & Sons, Ltd.
Performance of serial acquirers: toward an acquisition program perspective
Authors: Laamanen Tomi , Keil Thomas 
Published: February 2008

AbstractBased on an analysis of the most active acquirers in seven industry sectors in the United States in the 1990s, we find that both a high rate of acquisitions and a high variability of the rate are negatively related to performance. An acquirer's size, the scope of its acquisition program, and acquisition experience moderate the relationship by weakening the negative effects. Our findings contribute to an improved understanding of acquisition capabilities and program‐level acquisition performance, thereby adding to an emerging stream of research that is building an acquisition program perspective. Copyright © 2008 John Wiley & Sons, Ltd.
The option‐creating institution: a real options perspective on economic organization
Authors: Scherpereel Christopher M. 
Published: February 2008

AbstractThis paper proposes a dynamic framework of economic organization called the option‐creating institution (OCI) model. The claim is made that firm, market, and hybrid governance structures emerge from the need for flexibility in an uncertain world. Each governance structure uniquely provides strategic real options that allow capitalist‐entrepreneurs, with unique risk preferences, to better organize their economic activities. The real options perspective on economic organization is developed by drawing insights from the exchange and coordination perspectives. It is proposed that this real options perspective matches practicing decision makers' intuition and that an inductive OCI model will offer a prescriptive guide. Copyright © 2008 John Wiley & Sons, Ltd.
The effect of governance modes and relatedness of external business development activities on innovative performance
Authors: Keil Thomas , Maula Markku , Schildt Henri , Zahra Shaker A. 
Published: February 2008

AbstractThis study examines how different governance modes for external business development activities and venture relatedness affect a firm's innovative performance. Building on research suggesting that interorganizational relationships enhance the innovative performance of firms, we propose that governance modes and venture relatedness interact in their effect on innovative performance. Analyzing a panel of the largest firms in four information and communication technology sectors, we find that degree of relatedness for corporate venture capital investments, alliances, joint ventures, and acquisitions influences their impact on innovative performance. Copyright © 2008 John Wiley & Sons, Ltd.
Does technological modularity substitute for control? A study of alliance performance in software outsourcing
Authors: Tiwana Amrit 
Published: February 2008

AbstractAlthough control is presumed to be necessary to curb opportunism, its implementation in alliances can be costly and challenging. Paradoxically, some contemporary firms have counterintuitively developed successful alliances without extensive formal control. A widespread but untested assertion that might help reconcile this contradiction is that technological modularity reduces the need for alliance control. The objective of this study is to develop and test this assertion. Using data from 120 software outsourcing alliances, we show that, process control, outcome control, and modularity independently enhance alliance performance. However modularity and control are imperfect substitutes: modularity lowers the influence of process control but not of outcome control on alliance performance. Our theoretical development and empirical testing of the interactions of alliance control with modularity has significant implications for strategy theory and practice, which are also discussed. Copyright © 2008 John Wiley & Sons, Ltd.
Firm performance: the interactions of corporate social performance with innovation and industry differentiation
Authors: Hull Clyde Eiríkur , Rothenberg Sandra 
Published: February 2008

AbstractThe impact of corporate social performance on firm financial performance has been examined previously with mixed results. This study examines the possibility that corporate social performance enhances financial performance by allowing the firm to differentiate, and that this effect may be moderated both by innovation, which also drives firm differentiation, and the level of differentiation in the industry. Hypotheses concerning both direct and moderating effects are developed and tested using secondary data. Our results support both innovation and the level of differentiation in the industry as moderators for a positive relationship between corporate social performance and financial performance: corporate social performance most strongly affects performance in low‐innovation firms and in industries with little differentiation. Copyright © 2008 John Wiley & Sons, Ltd.
Energy Conservation Technologies and Expectation in Japan
Authors: Kudo Hiroyuki 
Published: February 2008

AbstractEnergy conservation technologies are primary measures against the global environmental issues. Since ‘Oil Shock’ in the middle of 1970s, Japanese industries have endeavored to increase energy efficiency that has resulted in a decrease in the production cost. This article describes the transition of energy consumption in Japan, outline of the energy conservation laws, and energy conservation technology developments for the industrial sector, for the commercial/residential sector, and the transportation sector. Five development themes on energy conservation of the national technological strategies are designated to be promoted by the year 2030. As one of the designated topics in the commercial sector, some development results of a national project on HEMS (Home Energy Management System) are described. Detail technologies in major fields are shown in the following papers. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Technologies for Energy Saving in Industrial Field
Authors: Nakatani Fumio 
Published: February 2008

AbstractThis paper summarizes practical and developed techniques and technologies for energy saving in the industrial field. Newly developed high‐efficiency electrical equipment or combined technologies, which are about ‘power electronics’, ‘microcomputers’ and ‘motion control’ in addition to the progress of sensing devices and monitoring systems, bring both energy saving and high productivity in the factory. The technology trend of new factory facilities is concerned about changing power sources from pneumatic (compressed air) or hydraulic power (oil system) to electrical direct‐driven servomotor systems, which have the technical characteristics of fine‐grained and regenerative control. These technologies are able to reduce and recover idling (standby) power consumption during the holding period at the production stage in the factory.The items in this paper were published as Technical Report No. 988 in January 11, 2004 by IEEJ, and that report is reviewed and updated in this paper. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Development of an Autonomous Mobile Robot with Several Sensors using Neuro‐Fuzzy Control Based on Server/Client Model
Authors: Ohchi Masashi , Furukawa Tatsuya , Tokushima Hisao , Sasaki Shinichi 
Published: February 2008

AbstractThe purpose of this paper is to detail the development of an autonomous mobile robot and a control support system. The robot has five infrared sensors and three ultrasonic sensors to enable it to follow a ‘ guide person’ with an infrared ray transmitter. The robot will follow the infrared rays emitted by a transmitter with the guide person, and move to the destination. The control system has been developed by the network technology based on server/client model. The advanced control strategy for the autonomous mobile robot is carried out with a high‐speed host server computer connected through the TCP/IP network. Therefore, it is enough for the CPU of the robot to be of low speed. In this paper, the autonomous mobile robot system and the control system using the server/client model are described. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Study of the Counterclockwise/Clockwise (CCW/CW) Rotational Losses Measured with a Two‐dimensional Vector Magnetic Property Measurement System
Authors: Maeda Yoshitaka , Shimoji Hiroyasu , Todaka Takashi , Enokizono Masato 
Published: February 2008

AbstractIn the development of high‐efficiency actuators, high‐magnetic flux density conditions are applied to achieve higher torque, lower weight and smaller size. It is therefore very important to understand the magnetic properties under high‐magnetic flux conditions in the electrical steel sheets. However, it is very difficult to measure the two‐dimensional vector magnetic properties under high‐flux density conditions due to nonlinearity and anisotropy of the magnetic materials. The measured magnetic power loss under clockwise rotating fields differs from that of the counter‐clockwise direction, and the value in counter‐clockwise rotating fields sometimes becomes negative. It can be considered that angle errors of H‐coils and B‐coils are the main causes of the measurement errors. In this paper, the angle errors of the double B‐coil (search coils) and the double H‐coil (cross‐type H‐coil) are evaluated with a projector‐type magnifying scope and a calibration device. We have compensated the measured magnetic field vector components caused by the angle errors and made clear their influence on the two‐dimensional vector magnetic property measurements. Furthermore, we proposed a method to cancel out small angle errors that remained in the saturated region. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Feasibility Study on Estimation of Permittivity Distribution by using Genetic Algorithm and Finite Element Analysis
Authors: Ohchi Masashi , Furukawa Tatsuya , Tokushima Hisao 
Published: February 2008

AbstractWe have investigated a measurement system for permittivity distribution based on the measured capacitance using a pair of large distance electrodes with shield and additional electrodes. However, the estimation of the permittivity distribution has not yet been established. In the paper, we propose a new numerical estimation method based on genetic algorithm (GA) and finite element method (FEM). The gene in the present GA method will have the information on such parameters as the location, radius and relative permittivity of a dielectric. The estimation of capacitance was done by using FEM with the numerical mesh data generated by the information on the gene. We also describe the feasibility of estimation of permittivity distribution using GA and FEM. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Risk‐based Replacement Scheme: Rational Replacement under Supply Risk
Authors: Shindo Takatoshi , Okamoto Tatsuki , Takahashi Tsuguhiro 
Published: February 2008

AbstractThough many studies on life extension of power apparatus have been carried out recently, it is inevitable to replace them in the not too distant future. However, if replacements of apparatus occur simultaneously, manufacturers may not able to supply the apparatus within a reasonable cost. This letter proposes a rational replacement scheme to avoid such supply risk. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
From Innovation to Implementation: The Long and Winding Road
Authors: Galavotti Christine , Kuhlmann Anne K. Sebert , Kraft Joan Marie , Harford Nicola , Petraglia Joseph 
Published: February 2008

AbstractBuilding on theory and past research, in early 2000 scientists in the Division of Reproductive Health developed a prevention innovation for CDC's Global AIDS Program for use in countries severely affected by the HIV/AIDS epidemic. This innovative program model is called MARCH: Modeling and Reinforcement to Combat HIV/AIDS (Galavotti et al. Am J Public Health 91:1602–1607,2001). MARCH promotes behavioral changes that reduce the risk of HIV infection and creates normative environments that sustain these changes through two key program components: entertainment‐education using mass media, particularly long‐running radio serial dramas, and reinforcement activities at the community level. Using the framework developed by Wandersman et al. (Am J Commun Psychol, 41(3–4), 2008), we describe the key elements of the MARCH prevention innovation and outline how we support its adaptation and implementation. We focus on the following questions: How do we get from an innovative model to effective program implementation in the field? How do we support implementation with fidelity when adaptation is required? And, once implemented, can we demonstrate fidelity of the adaptation to the original program model? Because our program model requires local adaptation for every instance of implementation, we suggest a potential enhancement to the Interactive Systems Framework—support for adaptation of the innovation—as part of the Prevention Support System. In this paper we describe how we supported adaptation of the radio serial drama component for unique contexts in several African countries. We focus attention on the tools and trainings we developed to build innovation specific capacity for implementation, including capacities for adaptation. We then present results of a qualitative analysis of scripts from the MARCH radio serial drama in Zimbabwe to assess the adapted program's fidelity to the original design of the innovation. Finally, we discuss lessons learned and explore implications for the field.
Classroom climate indicators and attitudes towards foreigners
Authors: Gniewosz Burkhard , Noack Peter 
Published: February 2008

AbstractThe school has been described as an important socialization agent in the process of political development. But the mechanism concerning how school contributes to political development has rarely been investigated. In this study we focus on contextual variables, i.e., classroom climate indicators that are seen as important aspects of the context in which adolescent development takes place. The study was based on the total of 1312 German students. In multilevel analyses, we regressed students’ reports on intolerant attitudes towards foreigners on background characteristics as well as on the perceived classroom climate. Fairness in the classroom as perceived by the individual student was found to be negatively related to intolerance and achievement pressure was positively related. Students attending the high college‐bound track reported less antiforeigner attitudes as did students where parents had a more sophisticated educational background. The results are discussed proposing schools to provide an open climate as a contextual framework for the development of tolerant attitudes among adolescents.
Motives for risk‐taking in adolescence: A cross‐cultural study
Authors: Kloep M. , Güney N. , Çok F. , Simsek Ö.F. 
Published: February 2008

AbstractMost research on adolescent risk‐taking has been conducted in Western societies, but it is as yet unknown whether motives to engage in risk behaviours show cultural variety. This study sets out to investigate differences in perceived motives to engage in perceived risks in Turkish and Welsh samples of young people (N=922) between 14 and 20 years of age. For this, a measurement scale to assess motives for risk‐taking was constructed and validated cross‐culturally. The scale was based on Kloep and Hendry's [(1999). Challenges, risks and coping in adolescence. In D. Messer, & S. Millar (Eds.), Exploring developmental psychology (pp. 400–416). London: Arnold] theoretical framework and the results of a study by Güney and Çok [(2006). Adolescent risk‐taking: Calculated risks, Turkish experience. In Paper presented at the 10th Bi‐annual conference of the European Association for Research on Adolescence, Antalya, Turkey]. Results show that different motives are associated with different risk behaviours, confirming Kloep and Hendry's expanded model. There were small, but significant, national differences, implying that motives to take risks—as opposed to actual risks taken—could be similar across adolescent populations, independent of culture.
Interaction and relationship development in stable young couples: Effects of positive engagement, psychological aggression, and withdrawal
Authors: Laurent Heidemarie K. , Kim Hyoun K. , Capaldi Deborah M. 
Published: February 2008

ABSTRACTThis study tested associations among observed interaction patterns and relationship satisfaction in a subsample of young at‐risk couples (n=47) from the Oregon Youth Study who remained stable over 7 years; each partner's positive engagement, psychological aggression, and withdrawal within a particular conflict structure (his vs. her topic) was used to predict satisfaction over time using multilevel growth curve modeling. Women's positive engagement during both topics predicted higher satisfaction for both partners at within‐couple and between‐couple levels. Women's psychological aggression showed topic‐specific associations with lower satisfaction for each partner, and increases in both men's and women's psychological aggression during their partner's topic related to lower satisfaction over time for women. Both partners’ withdrawal during men's topics predicted less decline in satisfaction for men.
Transfer of the Kenyan Kikuyu male circumcision ritual to future generations living in the United States☆
Authors: Mbito Michael N. , Malia Julia A. 
Published: February 2008

AbstractThis phenomenological research report from analysis of interviews with 18 participants focuses on the theme of transferring an age‐old initiation‐into‐manhood circumcision ritual to future generations of Kenyan Kikuyu who are living in the US. We identified three subthemes and found a strong indication that, while personally meaningful to the participants, the ritual, its meaning, and its impact likely will dwindle and possibly eventually be eradicated among future Kikuyu generations in America unless there is a concerted effort to shape the initiation rite into a form that they find meaningful.
Intrathecal antinociceptive interaction between the NMDA antagonist ketamine and the opioids, morphine and biphalin
Authors: Kosson Dariusz , Klinowiecka Anna , Kosson Piotr , Bonney Iwona , Carr Daniel B. , Mayzner‐Zawadzka Ewa , Lipkowski Andrzej W. 
Published: February 2008

AbstractBiphalin is an opioid peptide analogue that currently is under clinical development as a new type of site‐directed analgesic. In rats, the intrathecal (i.t.) analgesic potency of biphalin is 1000‐fold greater than morphine. Such a high activity may reflect this compound's activation of three types of opioid receptors (μ, δ and κ). NMDA receptors also play an important role in nociceptive processing. Therefore, we investigated in rats whether an NMDA antagonist may influence biphalin‐induced antinociception. In the present study, ketamine was chosen because of the widespread safe use of this drug in clinical practice. I.t. application of ketamine alone had relatively little analgesic effect and its excitatory effects limited possible doses of the drug. Co‐administration of ketamine with biphalin or morphine produced markedly greater antinociception than biphalin or morphine alone in acute, thermal tail flick testing. These results suggest that NMDA antagonists may be useful potentiators of biphalin analgesia. Thus, to obtain the same spinal antinociceptive effect, lower doses of biphalin or morphine are required when ketamine is co‐administered.
Focal adhesion kinase expression in ovarian endometriosis
Authors: Mu Lin , Zheng Wei , Wang Liang , Chen Xuejun , Yang Jianhua 
Published: February 2008

AbstractObjectiveTo investigate whether focal adhesion kinase (FAK) is expressed in endometriotic ovarian tissue.MethodsWe collected tissue samples from the ovaries of 41 women with ovarian endometriosis and from the endometrium of 20 healthy women undergoing surgery for benign indications. FAK expression was assessed by immunohistochemistry, Western blot analysis, and reverse‐transcription polymerase chain reaction.ResultsImmunoreactive staining for FAK was present in the cytoplasm of epithelial and stromal cells in the 2 groups, but FAK expression was significantly higher in ovarian endometriotic tissue than in normal endometrium (P < 0.01). FAK expression in ovarian endometriotic tissue was correlated with disease stage, pelvic pain level, and mean diameter of endometriotic cysts (P < 0.05).ConclusionsFAK might contribute to the pathogenesis and progression of endometriosis.
A POLAR DECOMPOSITION FOR HOLOMORPHIC FUNCTIONS ON A STRIP
Authors: SCHMÜDGEN KONRAD 
Published: February 2008

Let f be a holomorphic function on the strip {z
∈ [Copf ] : −α < Im z < α},
where α > 0, belonging to the class [Hscr ](α,−α;ε)
defined below. It is shown that there exist holomorphic functions
w1 on {z ∈ [Copf ] : 0 < Im
z < 2α} and w2 on {z
∈ [Copf ] : −2α < Im z < 2α},
such that w1 and w2 have boundary
values of modulus one on the real axis, and satisfy the relationsw1(z)=f(z-αi)w2(z-2αi) and w2(z+2αi)=f(z+αi)w1(z)for 0 < Im z < 2α, where f(z)
:= f(z). This leads to a ‘polar
decomposition’ f(z) = uf(z
+ αi)gf(z) of the
function f(z), where uf
(z + αi) and gf(z)
are holomorphic functions for −α < Im z <
α, such that [mid ]uf(x)[mid ] = 1
and gf(x) [ges ] 0 almost everywhere on the real axis. As a
byproduct, an operator representation of a q-deformed Heisenberg
algebra is developed.
ALL PRIMES HAVE CLOSED RANGE
Authors: READ C. J. 
Published: February 2008

In this paper, we show first that any prime (or semiprime) element of a commutative Banach algebra
must have closed range. As a corollary, we find that in a commutative radical Banach algebra, all primes
are zero divisors; indeed, all semiprimes are zero divisors (see below for the definition of semiprimeness).
Our result is also true of a semiprime that is in the centre of a noncommutative Banach algebra.The proof is fairly simple and entertaining, and we obtain a result that is helpful for the ambitious
classification of elements in commutative radical Banach algebras being attempted by Marc Thomas. It
is also related to the unbounded Kleinecke–Shirov conjecture.