bluuebunny/crossref_metadata_2025_split huggingface dataset:
Spain and Argentina as Importers of Management Knowledge (1955–2008): A Comparative Analysis
Authors: Rodríguez Carlos Jesús Fernández , Gantman Ernesto R. 
Published: January 2011

AbstractThis paper presents a comparative historical reconstruction of the evolution of the management discipline between 1955 and 2008 in Spain and Argentina—two countries that share common institutional and linguistic characteristics, which derive from their colonial relationship, but differ in terms of their economic development paths. We conclude that there are important parallels in both cases. First, the two countries have a role of “importers” of management knowledge, particularly from the United States, which may result from the positions they have historically occupied in the capitalist world system. Second, the discipline is dominated by a clearly managerial‐ or practitioner‐oriented bias, and the production of scholarly management knowledge seems to have little importance. Copyright © 2011 ASAC. Published by John Wiley & Sons, Ltd.
The performance of layered broadcast with superposition coding
Authors: Wei Dongyan , Wang Wenbo , Peng Mugen , Liang Dong , Liu Yang 
Published: January 2011

AbstractIn wireless broadcast system, where feedback is limited and channel state information is only available at the receiver side, layered broadcasting approach has been proposed to fully utilize the channel resources by providing different levels of service quality to users with different channel conditions. However, no upper bound has been given yet to show how the layered broadcast scheme will outperform the conventional broadcast (CB) scheme. In this paper, system average achievable rate (SAAR) is defined as the mean achievable rate of all users within the coverage. Based on continuum superposition coding (SC) with infinite layers, the upper bound of the SAAR of layered broadcasting is given by the derivation of the optimal power distribution function among the superposed layers. The results show that, by promoting the experience of stronger users (users with better channel conditions) without seriously degrading the performance of weaker users (users with worse channel conditions), layered broadcasting approach greatly increases the average system performance. Copyright © 2011 John Wiley & Sons, Ltd.
A delay‐based transport layer mechanism for fair TCP throughput over 802.11 multihop wireless mesh networks
Authors: Hou Ting‐Chao , Hsu Chih‐Wei , Wu Cheng‐Shong 
Published: January 2011

AbstractCities worldwide have planned and implemented large‐scale wireless mesh network (WMN) deployments. These mesh deployments are expected to provide broadband mobile access to the Internet at a low cost to the user. This paper considers the fairness problem affecting nodes in multihop WMNs. Many existing approaches to coping with the fairness problem are unsuitable because they necessitate modifications to the IEEE 802.11 MAC protocol or node queueing operations. Such modifications require a change in hardware/firmware at every node in the WMN. Thus, these approaches are less favorable from the points of view of interoperability and cost. Without modifying the lower layer protocols, this study identifies TCP parameters that impact throughput fairness and proposes an adjustment to these parameters to reduce frame collisions and to improve throughput fairness. Using simple mathematical formulations and ns2 simulations, this study shows that the frame transmissions from each node can be effectively controlled by properly controlling the delayed ACK timer and by using a suitable advertised window. The proposed method, in addition to fairness, requires fewer buffer resources than other methods. Moreover, it is not sensitive to the carrier sense range. It is also simple and easy to deploy. Copyright © 2011 John Wiley & Sons, Ltd.
Performance analysis of cooperative multi‐carrier relay‐based UAV networks over generalized fading channels
Authors: Abualhaol Ibrahim Y. , Matalgah Mustafa M. 
Published: January 2011

AbstractThe outage probability in a network of cooperative unmanned airborne vehicles (UAVs) over generalized fading channels is studied analytically using finite mixture with expectation maximization technique. A relay‐based topology with one ground control unit (GCU) is considered, where the cooperative UAVs can communicate with the GCU directly or through relay. The application the UAV is assigned for specifies the minimum required transmission rate the UAV should achieve. The outage probability of the system is defined as the probability that either the transmission rate over any of the links drops below a predefined minimum threshold for that link or the Relay‐GCU link is not able to transmit the aggregate data from all relayed UAVs and the minimum rate required by the relay UAV itself. Throughout the paper, expressions for the outage probability and the average achievable bit rate of a cooperative multi‐carrier system are derived over generalized fading channels. Finite mixture with expectation maximization algorithm is utilized to derive a simple approximate expression for the probability density function (pdf) of the achievable bit rate assuming adaptive M‐ary quadrature amplitude modulation (M‐QAM). This pdf is used to derive closed‐form expressions for the outage probability and the average bit rate. Copyright © 2011 John Wiley & Sons, Ltd.
Impact of inducible co‐stimulatory molecule (ICOS) on T‐cell responses and protection against Mycobacterium tuberculosis infection
Authors: Nouailles Geraldine , Day Tracey A. , Kuhlmann Stefanie , Loewe Delia , Dorhoi Anca , Gamradt Pia , Hurwitz Robert , Jörg Sabine , Pradl Lydia , Hutloff Andreas , Koch Markus , Kursar Mischo , Kaufmann Stefan H. E. 
Published: January 2011

AbstractEven though Mycobacterium tuberculosis (Mtb) remains one of the top microbial killers, more than 90% of the 2 billion infected individuals never develop active tuberculosis (TB), indicating efficient immune control of infection in these individuals. Immune mechanisms promoting either control or reactivation of TB are incompletely understood. Kinetic analyses of T‐cell responses against Mtb in C57BL/6 mice revealed surface expression of inducible co‐stimulatory molecule (ICOS) on >30% of all CD4+ T cells, suggesting a pivotal role of this costimulatory molecule of the CD28 family in TB control. Surprisingly, Mtb‐infected ICOS−/− mice showed lower bacterial burden during the late chronic stage of infection as compared to WT controls. ICOS deficiency resulted in a reduced Mtb‐specific CD8+ T‐cell response during late‐stage infection. In contrast, the polyclonal CD4+ Th1 response against Mtb was increased, most likely caused by diminished numbers and frequencies of Tregs. Thus, by altering effector T‐cell populations differentially, ICOS signaling modulates TB control in the late stage of infection.
Poly‐α,β‐unsaturated aldehydes derived from castor oil via ADMET polymerization
Authors: Kreye Oliver , Tóth Tommy , Meier Michael A. R. 
Published: January 2011

Abstract10‐Undecenal, derived by pyrolysis and reduction from castor oil, was almost quantitatively transformed into the corresponding aldol condensation product under basic conditions. This α,ω‐diene monomer was polymerized using acyclic diene metathesis (ADMET) polymerization. In a catalyst screening, four of nine different ruthenium‐based metathesis catalysts showed good reactivity under neat conditions at 80°C in the presence of 1,4‐benzoquinone and polymers with molecular weights up to 11 kDa were formed. Furthermore, the 1H NMR spectra showed that the metathesis catalysts tolerate the α,β‐unsaturated aldehyde function and due to the addition of benzoquinone, the degree of double bond isomerization was low. Further experiments investigating reduced catalyst amounts (down to 0.2 mol%) and the temperature dependence of these ADMET polymerizations gave also satisfying results for the formation of poly‐α,β‐unsaturated aldehydes. Moreover, ADMET polymerizations with different amounts of methyl 10‐undecenoate as chain‐stopper were performed and the integrals of the corresponding 1H NMR spectra allowed the determination of an absolute degree of polymerization. Finally, a reduction of a poly‐α,β‐unsaturated aldehyde with sodium borohydride was accomplished. The resulting poly‐(allyl alcohol) could be a useful compound in the generation of polymer networks like polyesters, polyurethanes, and polycarbonates and thus be of high interest in materials research.
On the necessity of edible oil refining and possible sources of 3‐MCPD and glycidyl esters
Authors: Pudel Frank , Benecke Patrick , Fehling Peer , Freudenstein Anne , Matthäus Bertrand , Schwaf Andrea 
Published: January 2011

AbstractA framework of collaborating research facilities in Germany investigates the reasons and conditions for the formation of 3‐monochloro‐1,2‐propanediol esters (3‐MCPD‐E) and of glycidyl esters (GE) during edible oil refining. The aim is the derivation of technological parameters to prevent or to reduce, respectively, the formation of these contaminants during the refining process, particularly for palm oil, because the highest contents of 3‐MCPD‐E and related compounds were found in refined palm oils. A strong influence of the deodorization conditions was proven on the potential to form 3‐MCPD‐E and related compounds. Above 240°C an increased formation especially of GE was observed. Deodorization temperatures up to 240°C lead to moderate concentrations ≤5 ppm. Degumming with water, neutralization with potassium hydroxide and bleaching before deodorization is advantageous with regard to reduce the capability of vegetable oils to form the contaminants 3‐MCPD and glycidyl esters.Practical application: There is a strong demand to guarantee a stable and reliable quality of refined edible oils. The problem of 3‐MCPD and glycidyl ester formation during refining has shown the sensitivity of the system to small variations in the refining conditions. In a first step it is necessary to explain the contribution of the different refining steps to the formation of contaminants.
Evaluation of TP53 mutations with the AmpliChip p53 research test in chronic lymphocytic leukemia: Correlation with clinical outcome and gene expression profiling
Authors: Chiaretti Sabina , Tavolaro Simona , Marinelli Marilisa , Messina Monica , Del Giudice Ilaria , Mauro Francesca Romana , Santangelo Simona , Piciocchi Alfonso , Peragine Nadia , Truong Sim , Patten Nancy , Ghia Emanuela Maria , Torrente Isabella , De Propris Maria Stefania , Nanni Mauro , Lawrence Jeff , Guarini Anna , Foà Robin 
Published: January 2011

AbstractGiven that TP53 alterations predict prognosis and response to therapy in chronic lymphocytic leukemia (CLL), screening for TP53 mutations has an increasing role in patient management. TP53 direct sequencing is a time‐consuming method, while the AmpliChip p53 Research Test is a novel non time‐consuming microarray‐based resequencing assay and queries Exons 2–11. We evaluated the impact of TP53 mutations on clinical outcome by analyzing 98 untreated CLL using the AmpliChip p53 Research Test and direct sequencing and performed microarrays analysis on TP53 mutated and/or deleted cases. The AmpliChip p53 Research Test detected 17 mutations in 14 patients (17.3%); a significant association between TP53 mutations and del(17p) was recorded. From a clinical standpoint, a higher percentage of mutation was found in CLL with unfavorable outcome (17.2% vs. 7.1% in progressive vs. stable cases). Detection of TP53 mutations by the AmpliChip p53 Research Test was associated with a significantly worse survival (P = 0.0002). Comparison of the array and direct sequencing tests showed that the p53 Research Test detected more mutations, although it failed to identify two microdeletions. Finally, microarrays analysis showed a more distinctive signature associated with del(17p) than with TP53 mutations, likely due to a concomitant gene dosage effect. The AmpliChip p53 Research Test is a straightforward method that bears prognostic value. This study confirms a high percentage of TP53 mutations in CLL with unfavorable outcome and a significant association between TP53 aberrations and del(17p). Finally, specific gene expression profiles are recognized for TP53 alterations. © 2011 Wiley‐Liss, Inc.
A coupled sediment routing and lateral migration model for gravel‐bed rivers
Authors: Raven Emma K. , Ferguson Rob , Lane Stuart N. 
Published: January 2011

AbstractWe describe additions made to a multi‐size sediment routing model enabling it to simulate width adjustment simultaneously alongside bed aggradation/incision and fining/coarsening. The model is intended for use in single thread gravel‐bed rivers over annual to decadal timescales and for reach lengths of 1–10 km. It uses a split‐channel approach with separate calculations of flow and sediment transport in the left and right sides of the channel. Bank erosion is treated as a function of excess shear stress with bank accretion occurring when shear stress falls below a second, low, threshold. A curvature function redistributes shear stress to either side of the channel. We illustrate the model through applications to a 5·6‐km reach of the upper River Wharfe in northern England. The sediment routing component with default parameter values gives excellent agreement with field data on downstream fining and down‐reach reduction in bedload flux, and the width‐adjustment components with approximate calibration to match maximum observed rates of bank shifting give plausible patterns of local change. The approach may be useful for exploring interactions between sediment delivery, river management and channel change in upland settings. Copyright © 2011 John Wiley & Sons, Ltd.
Water reservoirs and the risk of accidental flood occurrence. Case study: Stanca–Costesti reservoir and the historical floods of the Prut river in the period July–August 2008, Romania
Authors: Romanescu Gheorghe , Stoleriu Cristian , Romanescu Ana‐Maria 
Published: January 2011

AbstractIn the summer of 2008 the Prut river recorded a historical flow of 7140 m3/s at its entrance into Romania. This flow was the highest ever recorded of any Romanian river. The high value was generated by high amounts of rainfall recorded first on the territory of Ukraine and then in Romania. Unfortunately, there were some discrepancies between the data transmitted and intercepted from the Meteorology National Agency and Hydrology and Water Management National Agency. This is why the amount of precipitation which fell over the territory of Ukraine could not be monitored in time and punctually. Nor could the high flood wave moving rapidly from the upper basin to the lower basin. The high flow of the upper Prut caused the accumulation of an immense quantity of water in the Stanca–Costesti reservoir. Under the conditions of precipitation occurring in the lower river basin as well, the levels reached the flood quota and the reservoir reached the maximum accepted capacity, with 0·1% insurance. The release of supplementary water quantities from the reservoir would have produced catastrophic floods downstream. Keeping the water in the reservoir could have broken it and the flooding, through backwater eddies, or the riverbank settlements. In such a case, it would have produced the greatest tragedy in the hydrological history of Europe. The most significant damage was produced upstream of the barrage, next to the localities of Radauti Prut and Baranca–Hudesti, as well as in the area of the reservoir, as a result of the phenomenon known as ‘remuu’, or backwater eddies. The floods of the Prut river occurred between the end of July and the end of August. Copyright © 2011 John Wiley & Sons, Ltd.
Potentials for infant mental health: Congress themes and moral development
Authors: Emde Robert N. 
Published: January 2011

AbstractThemes of the Congress carried forward the pioneering contributions of Rene Spitz and Takeo Doi. Contributions to infant mental health included those dealing with: (a) relatedness, (b) positive rewards of infancy, (c) disruptions of relatedness and rewards, (d) assessments, and (e) interventions. Contributions from infant mental health and bridging to the future included those regarding: (a) prevention, (b) policy, and (c) advances for science and practice. Knowledge from infant mental health is seen to fill a gap in our current moral discourse. Biologically based, universal moral processes of reciprocity and empathy develop in infancy, with regulation from parenting. Parenting, suffering under conditions of deprivation and adversity, can benefit from interventions designed to promote positive outcomes for conduct. Implications stem from a wider awareness of global needs. An expressed resolve of many is to provide consultation for regions needing our help and to formulate a declaration of infant rights for guiding actions.
Akachan ni Kanpai! Celebrating the baby: Baby, family, culture
Authors: Watanabe Hisako 
Published: January 2011

Abstract“Akachan ni Kanpai! Celebrating the Baby: Baby, Family, Culture” was the theme of the 11th World Congress of the World Association for Infant Mental Health (August 2008). It denotes every baby's right to be blessed from the beginning of life, whether the baby is healthy, ill, disabled, or born into unwelcoming social contexts. Across the world, modern families of the 21st century face increasingly stressful lives. Japan, with a rapid postwar social change, has yielded increasing cases of postnatal depression and abuse, alerting her to reevaluate amae, a cultural affinity for interdependency. Amae, as studied by Takeo Doi, originates in the mother‐‐infant relationship and is carried through into adulthood characterizing Japanese mentality. The Japanese values for things simple, small, slow, and silent are typical in the art of haiku and Noh, but also render significant in infant mental health. Infants born under impossible conditions, such as those born extremely small and with congenital anomalies, survive through simple, sincere, sensitive care imbued with respect to their subtle signs. Their narratives of slow and steady progress from despair to a loving family context urge us to say “Akachan ni Kanpai” to countless infants worldwide whose voices are yet to be heard.
Maternal and infant behavior and context associations with mutual emotion availability
Authors: Bornstein Marc H. , Hahn Chun‐Shin , Suwalsky Joan T. D. , Haynes O. Maurice 
Published: January 2011

AbstractEmotional availability (EA) is a prominent index of mutual socioemotional adaptation in the parent–infant dyad. This study examines zero‐order and unique associations of multiple maternal and infant behavior and context indicators to variation in aspects of EA in mothers and their young infants. The associations to each were explored in separate analyses for maternal sensitivity and infant responsiveness in 369 European American mothers and their firstborn 5½‐month‐olds. Beyond zero‐order relations, robust regression analyses revealed differentiated patterns of unique relations of mother and infant behavior and context indicators to the EA dimensions of maternal sensitivity and infant responsiveness. Although potential behavior and context relations to EA are many, prominent relations to maternal sensitivity and infant responsiveness are few, and patterns of association vary for the two dimensions of EA. Adequate EA is fundamental to a healthy parent–infant relationship, and understanding the behavior and context indicators associated with EA is fundamental to its enhancement.
Giardia intestinalis escapes oxidative stress by colonizing the small intestine: A molecular hypothesis
Authors: Mastronicola Daniela , Giuffrè Alessandro , Testa Fabrizio , Mura Antonella , Forte Elena , Bordi Eugenio , Pucillo Leopoldo Paolo , Fiori Pier Luigi , Sarti Paolo 
Published: January 2011

AbstractGiardia intestinalis is the microaerophilic protozoon causing giardiasis, a common infectious intestinal disease. Giardia possesses an O2‐scavenging activity likely essential for survival in the host. We report that Giardia trophozoites express the O2‐detoxifying flavodiiron protein (FDP), detected by immunoblotting, and are able to reduce O2 to H2O rapidly (∼3 μM O2 × min × 106 cells at 37 °C) and with high affinity (C50 = 3.4 ± 0.7 μM O2). Following a short‐term (minutes) exposure to H2O2 ≥ 100 μM, the O2 consumption by the parasites is irreversibly impaired, and the FDP undergoes a degradation, prevented by the proteasome‐inhibitor MG132. Instead, H2O2 does not cause degradation or inactivation of the isolated FDP. On the basis of the elevated susceptibility of Giardia to oxidative stress, we hypothesize that the parasite preferentially colonizes the small intestine since, compared with colon, it is characterized by a greater capacity for redox buffering and a lower propensity to oxidative stress. © 2011 IUBMB IUBMB Life, 63(1): 21–25, 2011
What clinical psychologists know about evidence‐based practice: familiarity with online resources and research methods
Authors: Berke David M. , Rozell Cassandra A. , Hogan Thomas P. , Norcross John C. , Karpiak Christie P. 
Published: January 2011

AbstractEvidence‐based practice (EBP) requires that practitioners routinely access, appraise, and utilize the best available research. We surveyed a representative sample of the Society of Clinical Psychology; 549 psychologists (response rate = 46%) reported their frequency of engaging in EBP when offering psychological services, rated their current knowledge of 12 online research resources, and evaluated their current knowledge of 12 research methods and designs. These psychologists reported, on average, using EBP in 73.1% of their psychological services. With the exception of PsycINFO and MEDLINE, clinical psychologists related low to moderate knowledge of online research resources. By contrast, these psychologists reported considerable knowledge of most research methods and designs, except for odds ratios and structural equation modeling. Psychologists' theoretical orientation, clinical experience, and employment setting predicted knowledge of both online resources and research designs. We discuss the educational and practice ramifications of these results. © 2011 Wiley Periodicals, Inc. J Clin Psychol 67:1–11, 2011.