bluuebunny/crossref_metadata_2025 huggingface dataset:
Velocity log upscaling based on reversible jump Markov chain Monte Carlo simulated annealing
Authors: Dadi Sireesh , Gibson Richard , Wang Kainan
Published: August 2016

Upscaling log measurements acquired at high frequencies and correlating them with corresponding low-frequency values from surface seismic and vertical seismic profile data is a challenging task. We have applied a sampling technique called the reversible jump Markov chain Monte Carlo (RJMCMC) method to this problem. A key property of our approach is that it treats the number of unknowns itself as a parameter to be determined. Specifically, we have considered upscaling as an inverse problem in which we considered the number of coarse layers, layer boundary depths, and material properties as the unknowns. The method applies Bayesian inversion, with RJMCMC sampling and uses simulated annealing to guide the optimization. At each iteration, the algorithm will randomly move a boundary in the current model, add a new boundary, or delete an existing boundary. In each case, a random perturbation is applied to Backus-average values. We have developed examples showing that the mismatch between seismograms computed from the upscaled model and log velocities improves by 89% compared to the case in which the algorithm is allowed to move boundaries only. The layer boundary distributions after running the RJMCMC algorithm can represent sharp and gradual changes in lithology. The maximum deviation of upscaled velocities from Backus-average values is less than 10% with most of the values close to zero.
Extracting geoelectrical maps from vintage very-low-frequency airborne data, tipper inversion, and interpretation: A case study from northern Sweden
Authors: Abtahi Sayyed Mohammad , Pedersen Laust Börsting , Kamm Jochen , Kalscheuer Thomas
Published: August 2016

In 1985, the mining company Luossavaara-Kiirunavaara Aktiebolag collected airborne very-low-frequency (VLF) data in northern Sweden. The operators stored only the vertical component and the total magnetic field, which at that time were believed to be sufficient for qualitative interpretation. Therefore, the data could not be directly used for quantitative tensor VLF processing and inversion. To avoid the costs of resurveying, we have developed a novel technique to estimate the tippers from the measured VLF data by computing anomalous and normal parts of the horizontal components of the magnetic field from two transmitters separately. Retrieval of the normal horizontal components was possible because one component of the horizontal magnetic field was used as the phase reference during the measurements. Additionally, we have determined how the approximate apparent resistivity suitable for data visualization can be computed from the components of the magnetic field assuming an average normal resistivity of the subsurface. Maps of apparent resistivity combined with topography show a clear correlation between high topography and high resistivity, whereas conductive zones are found in valleys in between. More importantly, the 3D model inverted from the calculated tippers shows excellent agreement with a map of the surface geology. Based on this comparison, some less resistive zones can be related to fluids in fractures and others can be related to mineralized contact zones. We suggest to focus further exploration on conductive zones surrounding areas with basaltic composition.
Airborne Laser-Spark for Ambient Desorption/Ionisation
Authors: Bierstedt Andreas , Riedel Jens
Published: August 2016

A novel direct sampling ionisation scheme for ambient mass spectrometry is presented. Desorption and ionisation are achieved by a quasi-continuous laser-induced plasma in air. Since there are no solid or liquid electrodes involved, the ion source does not suffer from chemical interferences or fatigue originating from erosive burning or from electrode consumption. The overall plasma maintains electro-neutrality, minimising charge effects and accompanying long-term drift of the charged particles trajectories. In the airborne plasma approach the ambient air not only serves as the plasma medium, but at the same time also slows down the nascent ions via collisional cooling. Ionisation of the analyte molecules does not occur in the plasma itself but is induced by interaction with nascent ionic fragments, electrons and/or far ultraviolet photons in the plasma vicinity. At each individual air-spark an audible shockwave is formed, providing new reactive species, which expands concentrically and, thus, prevents direct contact of the analyte with the hot region inside the plasma itself. As a consequence the interaction volume between plasma and analyte does not exceed the threshold temperature for thermal dissociation or fragmentation. Experimentally this indirect ionisation scheme is demonstrated to be widely unspecific to the chemical nature of the analyte and to hardly result in any fragmentation of the studied molecules. A vast ensemble of different test analytes including polar and non-polar hydrocarbons, sugars, low mass active ingredients of pharmaceuticals, as well as natural biomolecules in food samples directly out of their complex matrices could be shown to yield easily accessible yet meaningful spectra. Since the plasma medium is humid air, the chemical reaction mechanism of the ionisation is likely to be similar to other ambient ionisation techniques.
Identification of the Sites of 4-Hydroxy-2-Nonenal and Neprilysin Adduction Using a Linear Trap Quadrapole Velos Pro-Orbitrap Elite Mass Spectrometer
Authors: Zhou Li , Qian Jiao , Liu Jianxu , Zhao Ruimin , Li Bowei , Wang Rui
Published: August 2016

Amyloid-β (Aβ)-degrading enzyme neprilysin (NEP) plays a pivotal role in eliminating Aβ. The oxidized modification of NEP by 4-hydroxy-2-nonenal (HNE) may reduce the clearance of Aβ in cultured cells and Alzheimer's disease (AD) brains. The aim of this research is to study whether HNE could modify the NEP protein and identify the specific sites of HNE-NEP modification using a linear trap quadrapole (LTQ) Velos Pro-Orbitrap Elite mass spectrometer. NEP activity was determined after SH-SY5Y cells had incubated with HNE (20 μM) for 24 hours. To identify the sites of NEP modification, samples of both native and HNE-modified NEP digested by trypsin were analyzed using a LTQ Velos Pro-Orbitrap Elite mass spectrometer. The NEP peptide-sequence information from the fragment ion masses was used to search for the sites of NEP adduction. HNE-treated cells showed a 60% loss of NEP activity. NEP was covalently adducted at Lys 93, Lys 472 by HNE via Michael addition. Compared to the control group, the sites of modified peptide in NEP showed a consistent 156 Da increased in m/z, which provides sequence information and might contribute to further studies on drug design and the therapeutics of AD.
The Aquaphotomics Approach as a Tool for Studying the Influence of Food Coating Materials on Cheese and Winter Melon Samples
Authors: Cattaneo Tiziana M.P. , Vanoli Maristella , Grassi Maurizio , Rizzolo Anna , Barzaghi Stefania
Published: August 2016

Food packaging and coatings have the well-known and established functions of containment, protection and handling facilitation of the food packaged inside. Fast methods able to classify, sort and identify the quality and the stability characteristics associated with the various packaging and coating materials are required along the food chain in order to validate their properties. Innovative products deriving from organic polymers, recently submitted for Italian patent (no. 102015000018950), were used as coatings both in the food industry for two types of cheese (provola and caciotta) and in postharvest management to modulate fruit ripening of winter melons during storage at 13°C. This work aimed at studying the effect of the differences in performance and permeability properties of the coatings after their application and during the ripening and storage period by using near infrared spectroscopy and exploiting the aquaphotomics approach, where information on the absorption bands can provide a distinct knowledge of water vibrations and intrinsic interactions between water and other components of the aqueous system. Applying multivariate spectral analysis, it was found that changes of water matrix under perturbation reflect other molecules surrounded by water, allowing the identification of specific fingerprints associated with coating characteristics and with the ripening/storage trends. Each coating generated a specific fingerprint for the same product suggesting that aquagrams could be a useful and fast procedure able to distinguish the effects of different coating materials on the same matrices. It was also proved that starting from similar aquagrams it was possible to follow and monitor the storage trends.
Case Report: ALCAPA syndrome: successful repair with an anatomical and physiological alternative surgical technique
Authors: Vilá Mollinedo Luis Gustavo , Jaime Uribe Andrés , Aceves Chimal José Luis , Martínez-Rubio Roberto Pablo , Hernández-Romero Karen Patricia
Published: August 2016

Anomalous left coronary artery from the pulmonary artery, or ALCAPA syndrome, is a rare congenital cardiac disease that can cause myocardial infarction, heart failure and even death in paediatric patients. Only few untreated patients survive until adult age. Here we present the case of a 33-year-old female patient with paroxysmal tachycardia, syncope and mild exertional dyspnoea. She was diagnosed with ALCAPA syndrome and underwent surgical correction with an alternative technique of left main coronary artery extension to the aorta.
Recent advances in cohesin biology
Authors: Rankin Susannah , Dawson Dean S.
Published: August 2016

Sister chromatids are tethered together from the time they are formed in S-phase until they separate at anaphase. A protein complex called cohesin is responsible for holding the sister chromatids together and serves important roles in chromosome condensation, gene regulation, and the repair of DNA damage. Cohesin contains an open central pore and becomes topologically engaged with its DNA substrates. Entrapped DNA can be released either by the opening of a gate in the cohesin ring or by proteolytic cleavage of a component of the ring. This review summarizes recent research that provides important new insights into how DNA enters and exits the cohesin ring and how the rings behave on entrapped DNA molecules to provide functional cohesion.
Physical activity in commuting, household, leisure-time, or work: which domain is associated with lower stress in adult workers?
Authors: Santos Marina , Del Duca Giovâni , Oliveira Elusa , Barros Mauro , Nahas Markus
Published: August 2016

The aim of the study was to investigate the association of the physical activity domains and types of physical activity practiced during leisure time with the occurrence of stress in workers. This is a cross-sectional survey, conducted from 2006 to 2008, with a representative sample of industrial workers (n = 47, 477; 69% men). Data were collected via questionnaire. For statistical analysis, a Poisson regression with adjustment for robust variance was used in Stata 13.0. Women who were physically active during leisure time (19.9%; IC95%: 19.0−20.7) had lower occurrences of stress than those who were physically inactive in this domain (14.2%; IC95%: 13.3−15.2). Among men, those active at home (11.6; IC95%:11.1−12.0 vs. 12.9%; IC95%:12.4−13.5), during leisure time (10.2%; IC95%: 9.8−10.6 vs. 15.1%; IC95%: 14.4−15.7), and at work (11.7%; IC95%: 11.3−12.1 vs. 13.3%; IC95%: 12.6−14.0) had lower occurrences of stress than their peers. As the number of domains that contained physical activity increased, stress occurrence tended to decrease for both sexes. The types of leisure time physical activities associated with a lower occurrence of stress in women were sports (11.1%), gymnastics/weight lifting (13.2%), and dance (14.5%); similar results were observed for men who engaged in jogging (9.0%), sports (9.7%), and walking (10.1%). Physical activity in the leisure time domain, for women and men workers, including sports practice among women and jogging among men, were associated with lower stress occurrences.
Atividade física e seus benefícios na qualidade de vida de mulheres com câncer de mama: um estudo transversal em Caxias do Sul – RS
Authors: Binotto Monique , Daltoé Tiago , Formolo Fernanda , Spada Patricia
Published: August 2016

A qualidade de vida (QV) de mulheres com câncer de mama pode sofrer muitas alterações, dessa forma, é essencial encontrar fatores que auxiliem na melhora da QV desses indivíduos. O objetivo deste estudo é avaliar o impacto da atividade física na QV das pacientes com câncer de mama e verificar se os domínios da QV diferem em função da frequência de atividade física semanal. Trata-se de um estudo transversal, cuja população constituiu-se de 272 mulheres portadoras de câncer de mama. A QV foi avaliada por meio do questionário WHOQOL-Bref e as demais variáveis foram respondidas em questionário desenvolvido à parte. As mulheres que realizavam atividade física de forma regular obtiveram melhores pontuações significativas na QV nos domínios global (74,5 vs 67,8; p=0,001), físico (66,0 vs 57,3; p=0,001), meio ambiente (69,5 vs 64,1; p=0,001) e psicológico (72,4 vs 66,4; p=0,001). Em relação à frequência de atividade física por semana, as melhores médias de atividade física foram encontradas na faixa de realização de atividade três vezes na semana nos domínios global (79,5; p=0,01), físico (68,2; p=0,03) e meio ambiente (74,3; p=0,002). Dessa maneira, pode-se inferir que a realização de atividade física de forma regular é benéfica para a QV de mulheres com câncer de mama.
Management of atrial fibrillation: when are invasive approaches useful?
Authors: Honarbakhsh S , Finlay M , Earley MJ , Lambiase PD , Schilling RJ , Hunter RJ
Published: August 2016

The management of atrial fibrillation extends from stroke prevention to rate or rhythm control strategies. The role of an invasive strategy is expanding and it remains important to identify suitable candidates early in the disease process.
Vertical leadership in highly complex and unpredictable health systems
Authors: Till Alex , Dutta Nina , McKimm Judy
Published: August 2016

This article explores how the concept of vertical leadership development might help health organizations cope with and thrive within highly complex and unpredictable health systems, looking at concepts of VUCA (volatility, uncertainty, complexity and ambiguity) and RUPT (rapid, unpredictable, paradoxical and tangled).
Guidance on feedback of outcome data to improve performance in vascular surgery
Authors: Li Mimi M , Shalhoub Joseph , Davies Alun H , Maruthappu Mahiben
Published: August 2016

Feedback of performance data is a well-established method of performance improvement in the health-care setting, although guidance has been limited in the context of surgical performance. This article outlines how optimal feedback can be achieved using surgeon outcome data.
Sensory Characteristics of Enzymatically Hydrolyzed Anchovy Protein by Descriptive Analysis
Authors: Youn So Jung , Kim Jinseon , Cho Hyung-Yong , Shin Jung-Kue
Published: August 2016

High pressure and enzymatic hydrolysis was applied to anchovy in order to produce a natural seasoning salt enhancer. The purpose of this study is to investigate the relationship between the sensory characteristics and protein concentration of enzymatic hydrolysates with anchovy. According to the results of QDA, 24 attribute descriptors were developed. Based on the flavor profile, the strengths of most tastes, except sourness, color flavor, and odor were evaluated before activated carbon treatment. Principal components analysis (PCA) was performed to summarize the relationship between attributes and samples. The result of PCA was F1 72.13% and F2 22.01%, having explained 94.13% in total variability, as F1 was shown according to the correlation about activated carbon treatment before or after samples. The characteristics of color, flavor/odor, and saltiness or bitter taste had higher correlation before activated carbon treatment samples. Also, F2 was shown to have no correlation to the samples.
Effect of Air Velocity and Drying Temperature on Drying Characteristics of Soybean (Glycine max) Using Hot Air Drying
Authors: Park Hyeon Woo , Kim Sun Tae , Choung Myoung Gun , Han Won Young , Yoon Won Byong
Published: August 2016

The effects of drying temperature on the drying characteristics of soybeans at the different position in the dryer with 28.1% (±0.8) of initial moisture content were studied. Drying temperatures varied at 35, 45 and 55ºC, with a constant inlet air velocity (3 m/s). The local air velocities at a position 1, 5, and 9 were 0.150 m/s (±0.012), 0.247 m/ s (±0.018) and 0.795 m/s (±0.036), respectively. The drying rate increased as the local air velocity increased from 0.150 m/s to 0.795 m/s. The cracked grain ratio increased as the drying rate increased. To prevent quality degradation of soybeans during hot-air drying, the local air velocity should be considered. Thin-layer drying models were applied to describe the drying process of soybeans. The Midilli-Kucuk model showed the best fit (R2>0.99). Based on the model parameters, the drying time to achieve the target moisture content (15%) was successfully estimated. The drying time was strongly dependent on the position in the dryer and the drying temperature.
Farm and Quarry or Smart State? Queensland's Economy Since 1989
Authors: Salisbury Chris
Published: August 2016

A generation ago, Queensland's economy relied heavily — as did the standing of the state government — upon a booming resources sector, a bountiful agricultural sector and a still-growing tourist market. ‘Rocks and crops’ (to use a favourite phrase of Peter Beattie's) were mainstays of the state's economic activity, and had long underpinned the government's investment, development and budgetary planning. While to a large extent the same might be said today, critical changes have taken place in the local economy in the intervening period, cultivated by successive state administrations with the express aim of diversifying an economy that was overwhelmingly geared towards primary production. Now it can be argued that Queensland's economy has metamorphosed into a modern, knowledge-based economy that demands greater emphasis on technology, expertise and innovation — what Premier Peter Beattie liked to promote with his catch-all phrase ‘Smart State’. But how effective was this push for diversification in renewing the state's economic foundations? Since the advent of the Goss Labor government in late 1989, has Queensland really moved from a ‘farm and quarry’ to a ‘smart’ economy?
O O que nos dizem os escândalos políticos sobre os media?
Authors: Paixão Bruno
Published: August 2016

O escândalo político é um fenómeno social que tem alcançado preponderância nas sociedades democráticas contemporâneas. Isso deve-se sobretudo a uma maior atenção jornalística que é concedida aos casos. Os media concedem à sociedade perceções sobre temas e acontecimentos, influindo sobre a inteleção dos cidadãos. Neste trabalho analisamos alguns traços da cobertura jornalística do escândalo político em Portugal ao longo do período democrático, entre 25 de abril de 1974 e 25 de abril de 2014, pretendendo cotejar padrões de cobertura jornalística a partir das peças extraídas de quatro jornais semanários generalistas de expansão nacional – Expresso, O Jornal, O Independente e Sol. Como revela o nórdico Mats Ekstrom (2000), numa frase lapidar que se poderia aditar a este trabalho sem causar surpresa, os escândalos encaixam-se numa cultura de notícias e de media «em que a oferta do que é chocante, espetacular, sensacional e anormal é a estratégia fundamental para supostamente atrair audiências»
Para que serve o provedor? A eficácia do provedor do serviço público de rádio e televisão
Authors: Ferro Hugo
Published: August 2016

Este artigo pretende avaliar e discutir o papel e a eficácia das figuras do provedor do ouvinte e do provedor do telespectador do serviço público de rádio e televisão, apoiado numa conceptualização teórica que nos permite fazer uma breve reconstrução histórica do surgimento dos primeiros provedores no panorama mediático português, tentando demonstrar as vantagens e desvantagens da existência de uma figura de mediação entre os meios audiovisuais do serviço público e as audiências, recorrendo aos relatórios de atividades dos diversos provedores do ouvinte e do telespectador. Concluímos que, apesar de se terem debatido com alguns obstáculos e contingências iniciais, há uma grande diferença quanto à aceitação e ao respeito pela figura do provedor no interior das redações dos diversos órgãos de serviço público, desde que surgiram até aos dias de hoje, o que se traduz num indício de uma maior aceitação da crítica, quer por parte dos jornalistas, quer por parte dos responsáveis, no sentido de melhorar a qualidade da informação, da programação e do compromisso com as audiências.
Academic achievement of junior high school students with sleep disorders
Authors: Auliyanti Fijri , Sekartini Rini , Mangunatmadja Irawan
Published: August 2016

Background Sleep disorders are prevalent in adolescents and may influence their academic achievement. To date, no study has been done in Indonesia on academic achievement in students with sleep disorders and its related factors. Objective To assess for relationships between academic achievement and related factors, including gender, motivation and learning strategies, IQ level, maternal educational level, socioeconomic status, family structure, after-hours education program, presence of TV/computer in the bedroom, sleep duration during school days, as well as bedtime and wakeup time difference in junior high school students with sleep disorders. Methods This cross-sectional study was performed from January to March 2013. Subjects were students from five junior high schools in Jakarta who fulfilled the criteria for sleep disorders based on the Sleep Disturbance Scale for Children questionnaire. Results There were 111 study subjects. The prevalence of sleep disorders was 39.7%, mostly in difficulties initiating and maintaining sleep (70.2%). Below-average academic achievement was seen in 47.6% of subjects. Factors significantly related to below-average academic achievement were after-hours education program (prevalence ratio 5.6; 95%CI 1.36 to 23.18; P = 0.017), average IQ level (prevalence ratio 3.26; 95%CI 1.38 to 7.71; P = 0.007), and male gender (prevalence ratio 2.68; 95%CI 1.06 to 6.78; P = 0.037). Conclusion Among junior high school students with sleep disorders, factors related to below-average academic achievement are afterhours education program (more than 2 types), the average IQ level, and male gender.
Procalcitonin for detecting community-acquired bacterial pneumonia
Authors: Gusmaiyanto Devi , Yani Finny Fitry , Efrida Efrida , Machmud Rizanda
Published: August 2016

Background Pneumonia is a major cause of morbidity andmortality in children under five years of age. Pneumonia can be ofbacterial or viral origin. It is difficult to distinguish between thesetwo agents based on clinical manifestations, as well as radiologicaland laboratory examinations. Furthermore, bacterial cultures taketime to incubate and positive results may only be found in 10-30%of bacterial pneumonia cases. Procalcitonin has been used as amarker to distinguish etiologies, as bacterial infections tend toincrease serum procalcitonin levels.Objective To determine the sensitivity, specificity, positivepredictive value and negative predictive value of procalcitoninin community-acquired bacterial pneumonia.Method This cross-sectional study was conducted in thePediatric Health Department of Dr. M. Djamil Hospital, Padang.Subjects were selected by consecutive sampling. Procalcitoninmeasurements and PCR screening were performed on bloodspecimens from 32 pneumonia patients and compared.Results Of the 32 subjects, most were boys (56.25%), under 5years of age (99%), and had poor nutritional status (68.75%).Using a cut-off point of 0.25 ng/mL, procalcitonin level hada sensitivity of 92%, specificity 50%, positive predictive value 88%, and negative predictive value 60% for diagnosing bacterial pneumonia. Using a cut-off point of 0.5 ng/mL, procalcitonin level had a specificity of 46%, specificity 83%, positive predictive value 91%, and negative predictive value 25%.Conclusion A cut-off point of 0.25 ng/mL of procalcitonin level may be more useful to screen for bacterial pneumonia than a cutoff point of 0.5 ng / mL. However, if the 0.25 ng/mL cut-off point is used, careful monitoring will be required for negative results, as up to 40% may actually have bacterial pneumonia. [PaediatrIndones. 2015;55:65-9.].
Corticosteroids and obesity in steroid-sensitive and steroid-resistant nephrotic syndrome
Authors: Lestari Nina , Nurani Neti , Julia Madarina
Published: August 2016

Background Children with nephrotic syndrome need high-dose corticosteroids to achieve remission. Studies have estimated a 35-43% risk of obesity in these patients after corticosteroid treatment.Objective To determine the prevalence of obesity in children who received corticosteroids for nephrotic syndrome, and to compare the risk of obesity in children with steroid-sensitive nephrotic syndrome (SSNS) and steroid-resistant nephrotic syndrome (SRNS).Methods We performed a retrospective cohort study in 50 children with SSNS or SRNS who received corticosteroid treatment. Obesity was defined to be a BMI-for-age Z-score above +2.0 SD, according to the WHO Growth Reference 2007. Central obesity was defined to be a waist-to-height ratio > 0.50.Results The overall prevalence of obesity was 22%, with 29% and 14% in the SSNS and SRNS groups, respectively. The overall prevalence of central obesity was 50%, with 54% and 46% in the SSNS and SRNS groups, respectively. The cumulative steroid doses in this study were not significantly different between the SSNS and SRNS groups. There were also no significant differences between groups for risk of obesity (RR 2.53; 95%CI 0.58 to 10.99) or central obesity (RR 1.39; 95%CI 0.45 to 4.25).Conclusion In children with nephrotic syndrome who received corticosteroids, the prevalence of obesity is 22% and of central obesity is 50%. In a comparison of SSNS and SRNS groups, cumulative steroid dose as well as risks of obesity and central obesity do not significantly differ between groups.
Risk factors for hearing loss in neonates
Authors: Maharani Ni Luh Putu , Haksari Ekawaty Lutfia , Artana I Wayan Dharma
Published: August 2016

Background An estimated 6 of 1,000 children with live birthssuffer from permanent hearing loss at birth or the neonatal period.At least 90% of cases occur in developing countries. Hearing lossshould be diagnosed as early as possible so that intervention canbe done before the age of 6 months.Objective To determine risk factors for hearing loss inneonates.Methods We performed a case-control study involving 100neonates with and without hearing loss who were born atSanglah Hospital, Denpasar from November 2012 to February2013. Subjects were consisted of 2 groups, those with hearingloss (case group of 50 subjects) and without hearing loss (controlgroup of 50 subjects). The groups were matched for gender andbirth weight. We assessed the following risk factors for hearingloss: severe neonatal asphyxia, hyperbilirubinemia, meningitis,history of aminoglycoside therapy, and mechanical ventilationby Chi-square analysis. The results were presented as odds ratioand its corresponding 95% confidence intervals.Results Seventy percent of neonates with hearing loss had historyof aminoglycoside therapy. Multivariable analysis revealed thataminoglycoside therapy of 14 days or more was a significant riskfactor for hearing loss (OR 2.7; 95%CI 1.1 to 6.8; P=0.040).There were no statistically significant associations betweenhearing loss and severe asphyxia, hyperbilirubinemia, meningitis,or mechanical ventilation.Conclusion 􀀤􀁐􀁌􀁑􀁒􀁊􀁏􀁜􀁆􀁒􀁖􀁌􀁇􀁈􀀃􀁗􀁋􀁈􀁕􀁄􀁓􀁜􀀃􀁉􀁒􀁕􀀃􀂕􀀃􀀔􀀗􀀃􀁇􀁄􀁜􀁖􀀃􀁚􀁄􀁖􀀃􀁌􀁇􀁈􀁑􀁗􀁌􀁉􀁌􀁈􀁇􀀃as a risk factor for hearing loss in neonates. [
Social Interactions and Monetary Incentives in Driving Consumer Repeat Behavior
Authors: Toker-Yildiz Kamer , Trivedi Minakshi , Choi Jeonghye , Chang Sue Ryung
Published: August 2016

Companies are eager to leverage social interactions among consumers by embedding social networking tools on their websites and actively integrating marketing actions with consumers' social activities. In this article, the authors investigate the impact of online social interactions on repeat usage behavior and the effectiveness of monetary incentives by formulating a model that parses out the effects of these individual factors. Using a unique data set from a wellness program, they find that online social interactions play a key role in driving repeat behavior, and after controlling for contemporaneous correlations from same-office friends, the social influence emanates even from distant friends working in different offices. The authors also find that monetary incentives have a significant impact on repeat usage and that ignoring this may overstate the impact of social influence. Furthermore, what-if scenario analyses show that social interactions are more effective than monetary incentives when both are present. The authors then explore social influence theories to understand the underlying process mechanisms that may operate in the repeat usage context. Using these findings, they offer strategic implications for marketing practice.
The Stigma Turbine: A Theoretical Framework for Conceptualizing and Contextualizing Marketplace Stigma
Authors: Mirabito Ann M. , Otnes Cele C. , Crosby Elizabeth , Wooten David B. , Machin Jane E. , Pullig Chris , Adkins Natalie Ross , Dunnett Susan , Hamilton Kathy , Thomas Kevin D. , Yeh Marie A. , Davis Cassandra , Gollnhofer Johanna F. , Grover Aditi , Matias Jess , Mitchell Natalie A. , Ndichu Edna G. , Sayarh Nada , Velagaleti Sunaina
Published: August 2016

Stigmas, or discredited personal attributes, emanate from social perceptions of physical characteristics, aspects of character, and “tribal” associations (e.g., race; Goffman 1963 ). Extant research has emphasized the perspective of the stigma target, with some scholars exploring how social institutions shape stigma. Yet the ways stakeholders within the sociocommercial sphere create, perpetuate, or resist stigma remain overlooked. The authors introduce and define marketplace stigma as the labeling, stereotyping, and devaluation by and of commercial stakeholders (consumers, companies and their employees, stockholders, and institutions) and their offerings (products, services, and experiences). The authors offer the Stigma Turbine as a unifying conceptual framework that locates marketplace stigma within the broader sociocultural context and illuminates its relationship to forces that exacerbate or blunt stigma. In unpacking the Stigma Turbine, the authors reveal the critical role that market stakeholders can play in (de)stigmatization, explore implications for marketing practice and public policy, and offer a research agenda to further understanding of marketplace stigma and stakeholder welfare.
Factorial Design based Optimisation of Crevice Corrosion for Type 304 Stainless Steel in Chloride Solutions
Authors: Ogunleye O.O. , Adeniyi A.G. , Durowoju M.O.
Published: August 2016

The effects of chloride concentration, creviced scaling factor and immersion time on the percentage area and maximum depth of attack for Type 304 stainless steel (SS304) in chloride solutions were investigated. The crevice assembly comprised of coupon (SS-304), polytetrafluoroethylene (crevice former) and fasteners (titanium bolt, nut and washers). The full immersion tests were based on ASTM G-78 using full factorial design to study the effects of chloride concentration (1.5, 3.0 and 4.5 w/w%), crevice scaling factor (8, 16 and 24) and immersion time (15, 30 and 45 days) on the percentage area of attack (Y1) and maximum depth of attack (Y2) of SS-304. Data obtained was used to develop and optimize the models of Y1 and Y2 in terms of the three factors using Response Surface Methodology (RSM). The R2 of Y1 and Y2 were 0.98 and 0.91, respectively. The minimum Y1 (5.63%) and Y2 (3.32×10−7 mm) were obtained at 4.5% chloride concentration, 20 scaling factor and 15 days immersion time. The predicted optimal conditions agreed with the experimental results for validation with a maximum absolute relative error of 5.75%.
Inicjacja uszkodzeń gorącej części lotniczych silników turbinowych
Authors: Szczepankowski Andrzej , Szymczak Janusz
Published: August 2016

W artykule przedstawiono przyczyny inicjacji uszkodzeń elementów rur żarowych zasadniczej komory spalania i zespołów turbin, które najczęściej występują w procesie eksploatacji lotniczych silników turbinowych (LST). Zilustrowano je licznymi przykładami postępującej degradacji stanu powierzchni części i podzespołów różnego typu silników lotniczych, stwierdzanej podczas kontroli endoskopowych.

Na podstawie wyników systematycznej obserwacji omówiono proces niszczenia powierzchni łopatek wieńca wirnika turbiny. Zwrócono uwagę na dotychczasowy i nadal obowiązujący sposób oceny przydatności LST do dalszej eksploatacji z uwzględnieniem specyfiki jego użytkowania.
The Idea to Synchronize Measuring Paths for Two Different Current Generators Operated as Position-Voltage Converters
Authors: Gębura Andrzej , Zieja Mirosław
Published: August 2016

The study deals with the issue how to apply two different types of current generators at the same time, namely a three-phase AC generator and a DC generator of commutator type. What is more interesting, the two generators would be able to collaborate both during the phase of electromechanical sampling and the phase of electronic sampling. It will enable structural improvement of sensitivity and resolution parameters and shall open new opportunities to investigate new types if mechanical phenomena (that have not been already tracked by means of the FAM-C and FDM-A methods), such as torsion of torque transmission shafts.
New Heteroceratidae (Ammonoidea) from the late Barremian deepening succession of Marseille (Bouches-du-Rhône, France)
Authors: Frau Camille , Delanoy Gérard , Masse Jean-Pierre , Lanteaume Cyprien , Tendil Anthony J.B.
Published: August 2016

Investigation of the late Barremian deepening succession of the Provence platform, cropping out south of Marseille (Bouches-du-Rhône, France), has yielded a new ammonite fauna belonging to the Martelites sarasini Subzone (Martelites sarasini Zone). The fauna is dominated by representatives of the Heteroceratidae Spath, characterized by different patterns of coiling, high intraspecific variabilities and dwarfism. These heteroceratids are distinctive and utterly different from all previously known taxa, and this justifies the introduction of the new taxa Heteroceras denizoti sp. nov., Heteroceras veratiae sp. nov., Calanquites gen. nov., based on Imerites katsharavai Rouchadzé; Giovaraites gen. nov., based on Giovaraites massiliae gen. et sp. nov., Barguesiella gen. nov., based on Barguesiella goudesense gen. et sp. nov. and the closely allied Barguesiella mantei gen. et sp. nov. The occurrence of the latter species at the top of the Maiolica Formation in Italy questions its early Aptian age assumed in the literature. The newly described fauna could be considered as the first case of micromorphy in the Heteroceratidae. Its biostratigraphy, palaeoenvironmental and palaeobiogeographical significance are discussed.
Wild Primes of a Higher Degree Self-Equivalence of a Number Field
Authors: Czogała Alfred , Rothkegel Beata , Sładek Andrzej
Published: August 2016

Let ℓ > 2 be a prime number. Let K be a number field containing a unique ℓ-adic prime and assume that its class is an ℓth power in the class group CK
. The main theorem of the paper gives a sufficient condition for a finite set of primes of K to be the wild set of some Hilbert self-equivalence of K of degree ℓ.
An extension of the Piatetski-Shapiro prime number theorem
Authors: Baier Stephan
Published: August 2016

Balog and Harman proved that for any λ in the interval 1/2 ≤ λ < 1 and any real θ there are infinitely many primes p satisfying

(with an asymptotic result). In the present paper we prove that for 59/85 = 0-694... < λ < 1 the above expo­nent -(1-λ)/2+ε may be replaced by - min{max{(35-22λ)/129, 1/7}, 5/18-λ/6}+ε. This result in particular contains the Piatetski-Shapiro prime number theorem in the ver­sion given by Liu and Rivat: We have |{n ≤ N : [nc] prime}) ~ N/(c log N) as N → 8734 if 1 < c < 15/13. For the proof of our result we use exponential sum techniques.
A nonlinear-stability analysis of second-order fluid in porous medium in presence of magnetic field
Authors: Xu Lanxi
Published: August 2016

Nonlinear stability of the motionless state of the second-order fluid in porous medium in presence of magnetic field is studied by the Lyapunov’s second method. Through defining a Lyapunov function we will prove the inhibiting effect of the magnetic field on the onset of convection. If the Chandrasekhar number is below a computable constant depending on system parameters, we even prove the coincidence of linear and nonlinear stability boundary. Moreover, the medium permeability has a destabilizing effect.
Convergence rate for some additive function on random permutations
Authors: Zacharovas Vytas
Published: August 2016

We estimate the convergence rate to normal law of the distribution of some special function which does not satisfy the Lindeberg type condition.
Interrelations Between the Taylor Coefficients of a Matricial Carathéodory Function and Its Cayley Transform
Authors: Choque Rivero Abdon Eddy , Fritzsche Bernd , Kirstein Bernd
Published: August 2016

The main goal of this paper is to discuss several interrelations between the Taylor coefficients of a q x q matrix-valued Carathéodory function and its Cayley transform which is a q x q matrix Schur function. Both Taylor coefficient sequences are described in terms of corresponding matrix balls. Hereby, we will obtain explicit formulas for the parameters of one matrix ball in terms of the other one. These expressions imply a one-to-one correspondence between central matricial Carathéodory functions and central matricial Schur functions which is established via Cayley transform.
Domains of uniform convergence of real rational chebyshev approximants
Authors: Kovacheva Ralitza K.
Published: August 2016

Let the function ƒ be real-valued and continuous on [-1,1]. Denote by Rn,n, n = 1,2, … the rational Chebyshev approximants of order (n,n) of f on the interval. The present paper is inspired by a conjecture raised up by A. A. Gonchar, namely: If all (start­ing with a number n0) rational functions Rn,n are analytic in some Joukowski’s ellipse Ɛ, then ƒ admits an analytic continuation from [-1,1] into Ɛ. We show that the hypothesis is true if the set of the free poles of Rn,n and the set of the alternation points are asymptoti­cally “well distributed”.
Positive solutions of fractional elliptic equation with critical and singular nonlinearity
Authors: Giacomoni Jacques , Mukherjee Tuhina , Sreenadh Konijeti
Published: August 2016

In this article, we study the following fractional elliptic equation with critical growth and singular nonlinearity:

(-Δ)s⁢u=u-q+λ⁢u2s*-1,u>0 in ⁢Ω,u=0 in ⁢ℝn∖Ω,(-\Delta)^{s}u=u^{-q}+\lambda u^{{2^{*}_{s}}-1},\qquad u>0\quad\text{in }% \Omega,\qquad u=0\quad\text{in }\mathbb{R}^{n}\setminus\Omega,

where Ω is a bounded domain inℝn{\mathbb{R}^{n}}with smooth boundary∂⁡Ω{\partial\Omega},n>2⁢s{n>2s},s∈(0,1){s\in(0,1)},λ>0{\lambda>0},q>0{q>0}and2s*=2⁢nn-2⁢s{2^{*}_{s}=\frac{2n}{n-2s}}. We use variational methods to show the existence and multiplicity of positive solutions with respect to the parameter λ.
Uniqueness of limit flow for a class of quasi-linear parabolic equations
Authors: Squassina Marco , Watanabe Tatsuya
Published: August 2016

We investigate the issue of uniqueness of the limit flow for a relevant class of quasi-linear parabolic equations defined on the whole space.
More precisely, we shall investigate conditions which guarantee that the global solutions decay at infinity uniformly in time and their entire trajectory approaches a single steady state as time goes to infinity.
Finally, we obtain a characterization of solutions which blow up, vanish or converge to a stationary state for initial data of the form

λ
⁢

φ
0

${\lambda\varphi_{0}}$

while

λ
>
0

${\lambda>0}$

crosses a bifurcation value

λ
0

${\lambda_{0}}$

.
Use of essential oils in broiler chicken production – a review
Authors: Adaszyńska-Skwirzyńska Michalina , Szczerbińska Danuta
Published: August 2016

Biological activity of volatile plant metabolites is the property that can potentially find application in animal nutrition. Nowadays, the use of bioactive compounds is encouraged in many areas of industry and agriculture, since these substances have similar properties as withdrawn antibiotic growth promoters. Meat poultry production is focused on the maximization of performance parameters, namely rapid chicken growth with low feed consumption, and with the optimum health status of the flock. Essential oils can stimulate the growth and functioning of the body, which translates into both chicken’s health and enhanced production parameters. The substances are characterized by a range of effects, are easily biodegradable, and do not usually require a waiting period - hence they can be used in breeding broiler chickens. Given the increasing restrictions imposed on poultry production in terms of food safety and ethical aspects of husbandry, it seems appropriate to look for the use of new, natural substances to be applied in animal production. The article presents the characteristics of essential oils in this context, with a particular focus on their antimicrobial and immunostimulatory properties. The paper also describes production applications of essential oils tested in experiments on hybrid Ross 308 and Cobb 500 chickens.
Selection of optimal spawning pairs to maintain genetic variation among captive populations of Acipenseridae based on the polymorphism of microsatellite loci
Authors: Kaczmarczyk Dariusz
Published: August 2016

The American paddlefish, Polyodon spathula (Walbaum), is an endangered acipenserid fish. Its wild populations are supplemented with stocking material that is obtained by conducting artificial spawning in aquaculture conditions. When fish are bred in captivity, it is important to select breeding pairs that will produce the most genetically diverse progeny, since this permits maintaining the fitness of wild populations. Breeding pairs of land animals are selected successfully based on the polymorphism of their microsatellite loci. This theoretical paper asks how to adapt this technique to fish so that American paddlefish spawners can be paired with the aim of producing restocking material in aquaculture that maintains genetic variation. To test our calculating techniques, we used actual data on the polymorphism of the microsatellites from paddlefish broodstock at the Pogorze fish farm (Poland). The data enabled us to do calculations that showed which spawner pairs would create the most genetically diverse offspring and how to assemble sets of spawning pairs that would be best for maintaining genetic variation. The method presented in this paper can be used for breeding fish in aquaculture to help conserve species. It could also be used in a computer program which would automate calculations and present them in easy-to-read tables and graphs.
Economic growth and labor market friction: a quantitative study on Japanese structural transformation
Authors: Sim Seung-Gyu , Oh Seungjoon
Published: August 2016

This paper develops a tractable multi-sector endogenous growth model with labor market friction and human capital accumulation to analyze the underlying link between economic growth and labor market institutions. The model, calibrated based on the Japanese structural transformation episodes, demonstrates that lifetime employment system has contributed to unprecedentedly rapid economic growth, by enhancing human capital accumulation and facilitating physical capital formation. The counterfactual experiment finds that had the job durations of a typical worker been 1 year (roughly one tenth of the actual average job duration) for 1960–1990 in the Japanese labor market, the non-agricultural GDP per capita in 1990 would have accounted for 71 percent of the actual values.
Assessment of genotoxicity of vincristine, vinblastine and vinorelbine in human cultured lymphocytes: a comparative study
Authors: Mhaidat NM , Alzoubi KH , Khabour OF , Alawneh KZ , Raffee LA , Alsatari ES , Hussein EI , Bani-Hani KE
Published: August 2016

Vincristine (VCR), vinblastine (VBL) and vinorelbine (VRL) are anticancer agents from the Vinca alkaloid family that have the potential to induce genotoxic effect. The aim of the present study was to compare the genotoxic effect of VCR, VBL and VRL. Levels of 8-hydroxy-2-deoxy guanosine (8-OHdG) and sister chromatid exchanges (SCEs) were measured in cultured human blood lymphocytes treated with VCR, VBL and VRL at concentrations of 0.01 and 0.1 μg/mL. Results showed that VCR, VBL and VRL significantly increased the 8-OHdG levels (p <0.05), whereas it did not cause a significant increase in the frequencies of SCEs in human blood lymphocytes as compared to controls. On the other hand, all three agents significantly increased cells mitotic index (p <0.05). At both tested concentrations, the magnitude of the increase in 8-OHdG was VBL>VCR>VRL. In conclusion, VCR, VBL and VRL induce DNA damage as indicated by the increase in the 8-OHdG biomarker but with different magnitude.
Frequency and association of 1691 (G>A) FVL, 20210 (G>A) PT and 677 (C>T) MTHFR with deep vein thrombosis in the population of Bosnia and Herzegovina
Authors: Jusić-Karić A , Terzić R , Jerkić Z , Avdić A , Pođanin M
Published: August 2016

The 1691 (G>A) factor V Leiden (FVL) and 20210 (G>A) prothrombin (PT) mutations are the two most common genetic risk factors in venous thromboembolism. The 677 (C>T) methylene tetrahydrofolate reductase (MTHFR) mutation is the most frequently mentioned as an independent genetic risk factor for venous thromboembolism. As there are limited published data on the prevalence of the 1691, 20210 and 677 mutations in our population, the aim of this study was to determine the frequencies and association of these deep vein thrombosis mutations in the Bosnian population.

This study included 111 thromboembolic patients and 207 healthy subjects with absence of known risk factors for venous thromboembolism. Genotyping of the 1691, 20210 and 677 mutations was done by polymerase chain reaction (PCR), followed by restriction digestion with MnlI, HindIII and HinfI enzymes.

Out of the 111 patients, 18.0% were heterozygous and 2.70% were homozygous for the 1691 mutation. Among 207 healthy controls, 3.86%, were heterozygous for the 1691 mutation. This study confirmed the association of the 1691 mutation with deep vein thrombosis in the Bosnian population odds ratio (OR) [95% confidence interval (CI)] = 6.0 (2.62-14.14); p = 0.0001). The 20210 mutation was detected in 2.70% of patients and it was totally absent in the control group. Allele and genotype frequency of 677 did not differ significantly between the cases and controls (χ2 = 1.03; p = 0.309).