bluuebunny/crossref_metadata_2025 huggingface dataset:
A Continuous Identity Authentication Scheme Based on Physiological and Behavioral Characteristics
Authors: Wu Guannan , Wang Jian , Zhang Yongrong , Jiang Shuai
Published: January 2018

Wearable devices have flourished over the past ten years providing great advantages to people and, recently, they have also been used for identity authentication. Most of the authentication methods adopt a one-time authentication manner which cannot provide continuous certification. To address this issue, we present a two-step authentication method based on an own-built fingertip sensor device which can capture motion data (e.g., acceleration and angular velocity) and physiological data (e.g., a photoplethysmography (PPG) signal) simultaneously. When the device is worn on the user’s fingertip, it will automatically recognize whether the wearer is a legitimate user or not. More specifically, multisensor data is collected and analyzed to extract representative and intensive features. Then, human activity recognition is applied as the first step to enhance the practicability of the authentication system. After correctly discriminating the motion state, a one-class machine learning algorithm is applied for identity authentication as the second step. When a user wears the device, the authentication process is carried on automatically at set intervals. Analyses were conducted using data from 40 individuals across various operational scenarios. Extensive experiments were executed to examine the effectiveness of the proposed approach, which achieved an average accuracy rate of 98.5% and an F1-score of 86.67%. Our results suggest that the proposed scheme provides a feasible and practical solution for authentication.
An Overview of Energy and Exergy Analysis to the Industrial Sector, a Contribution to Sustainability
Authors: Arango-Miranda Raúl , Hausler Robert , Romero-López Rabindranarth , Glaus Mathias , Ibarra-Zavaleta Sara
Published: January 2018

Globally, industry remains one of the main consumers of fossil fuels; hence, it is one of the prime sources of greenhouse gases (GHG). Exergy analysis methods can be applied to detect the processes inefficiencies. To enhance the interconnection of the exergy and the environment theories, renewable share and exergy efficiency are suggested, in a contribution to sustainability. Exergy analysis is proposed and lifted to study the industrial sector. Even though exergy analysis has been applied to study societies, few studies have been conducted to study emerging-market economies. In 2015, Mexico’s crude oil production was the 12th biggest worldwide, therefore fossil fuels are still the main source to produce energy for the domestic and productive sectors of the Mexican society. Consequently, a prospective study case in Mexico is suggested. The industrial sectorial exergy consumption amounts 1350 PJ in 2000, increasing to 1591 PJ in 2015. Both energy and exergy efficiencies show similar results along the 16 years, with average energy and exergy efficiencies of 78% and 23%, respectively. In comparison with results of similar studies, Mexican exergy efficiency falls within the ranges, yet below the average of 48%. Thus, poor efficiency is still occurring in the sector. Our proposal could provide significant opportunities to become a more sustainable sector, based on the exergetic renewable share and the exergy efficiency.
Suitability of a Consensual Fuzzy Inference System to Evaluate Suppliers of Strategic Products
Authors: Garcia Nazario , Puente Javier , Fernandez Isabel , Priore Paolo
Published: January 2018

This paper designs a bidding and supplier evaluation model focused on strategic product procurement, and develops their respective evaluation knowledge bases. The model is built using the most relevant variables cited in the reviewed procurement literature and allows to compare two evaluation methods: a factor weighting method (WM) and a fuzzy inference system (FIS). By consulting an expert panel and using a two-tuples symbolic translation system, strong fuzzy partitions for all model variables are built. The method, based on central symmetry, permits to obtain the fuzzy label borders from their cores, which have been previously agreed among experts. The system also allows to agree the fuzzy rules to embed in the FIS. The results show the FIS method’s superiority as it allows to better manage the non-linear behavior and the uncertainty inherent to the supplier evaluation process.
Updated Overview of Infrared Spectroscopy Methods for Detecting Mycotoxins on Cereals (Corn, Wheat, and Barley)
Authors: Levasseur-Garcia Cecile
Published: January 2018

Each year, mycotoxins cause economic losses of several billion US dollars worldwide. Consequently, methods must be developed, for producers and cereal manufacturers, to detect these toxins and to comply with regulations. Chromatographic reference methods are time consuming and costly. Thus, alternative methods such as infrared spectroscopy are being increasingly developed to provide simple, rapid, and nondestructive methods to detect mycotoxins. This article reviews research conducted over the last eight years into the use of near-infrared and mid-infrared spectroscopy to monitor mycotoxins in corn, wheat, and barley. More specifically, we focus on the Fusarium species and on the main fusariotoxins of deoxynivalenol, zearalenone, and fumonisin B1 and B2. Quantification models are insufficiently precise to satisfy the legal requirements. Sorting models with cutoff levels are the most promising applications.
Do As They Did: Peer Effects Explain Adoption of Conservation Agriculture in Malawi
Authors: Bell Andrew , Zavaleta Cheek Jennifer , Mataya Frazer , Ward Patrick
Published: January 2018

Adoption of the trinity of practices known commonly today as conservation agriculture (CA)—maintaining soil cover, reducing tillage, and enhancing soil nitrogen through legumes—is a critical process to the management of erosion in rural landscapes, and maintenance of aquatic habitats and hydropower potential. However, the large literature on the benefits and risks of CA fails to find any universal determinants of adoption, with competing uses for crop residues, availability of labor, and access to physical inputs common constraints appearing in different contexts. We conduct a study in the specific context of Malawi, using ethnographic interviewing to draw out possible decision criteria and machine learning to identify their explanatory power. This study is structured to inform the question: “How do farmers decide to adopt the specific activities of CA in Malawi?” We find that more than any other factor, adoption by neighbors (i.e., peer effects) matters, with possible implications for the overall cost of encouraging CA (e.g., through subsidies) as it is taken up across a landscape. Further, we note that little else within our household survey (save for more detailed articulation of neighbor and neighborhood characteristics) offers greater explanatory power than those factors identified by farmers themselves. Finally, we note that decisions made in the presence of an incentive are structurally different than those made without incentives, validating previous concerns in the literature regarding the basis most CA adoption studies, within CA promotion interventions.
Assessment of the Binding of Protons, Al and Fe to Biochar at Different pH Values and Soluble Metal Concentrations
Authors: Dang Tan , Marschner Petra , Fitzpatrick Rob , Mosley Luke
Published: January 2018

Biochar can retain large amounts of protons and metals in the drainage water from acid sulfate soils and mine sites. Metal sorption can, however, be influenced by many factors, such as pH and metal composition. This study investigated proton, Al, and Fe retention capacity of eucalyptus biochar (1% w/v) at different pH and metal concentrations. In the absence of metals, the biochar had a high proton binding capacity, (up to 0.035 mmol of H+), whereas its capacity to retain hydroxide ions was limited. A batch experiment was carried out at pH 4 and pH 7 with 10−6, 10−5, 10−4, 10−3, and 10−2 M of added Fe or Al. Added metals precipitated considerably prior to addition of the biochar except that Al remained highly soluble at pH 4. The biochar had a high retention capacity for Al and Fe; at high (>1 mM) concentrations, over 80% of soluble metals were retained. Metal competition for binding sites of both Al and Fe at different ratios was investigated, but increasing concentrations of one metal did not reduce retention of the other. The results confirmed that biochar has high metal binding capacity under both acidic and neutral conditions.
Quantitative Analysis and Development of the Fore Feet of Arabian Foals from Birth to 1 Year of Age
Authors: Faramarzi Babak , Salinger Allison , Kaneps Andris , Nout-Lomas Yvette , Greene Holly , Dong Fanglong
Published: January 2018

Objectives The goal of this study was to quantify external and internal anatomical characteristics of the foal foot throughout the first year of age.

Methods Digital radiographs and photographs were taken bimonthly of the forefeet of nine Arabian foals, beginning at about 2 weeks of age until 12 months of age. Sixty-eight linear and angular variables were measured using NIH (National Institutes of Health) Image J software. Statistical analyses were performed using piecewise random coefficient model and p-values < 0.05 were considered significant.

Results Distinct changes in hoof development were identified between 4 and 8 months of age. Distinct changes were identified in severalexternal(conformational) measurements including hoof solar widths and lengths, palmar heel lengths, toe and heel angles and in several internal (radiographic) measurements including the widths and lengths of the phalanges and sesamoid bones as well as joint angles.

Clinical Significance Existing knowledge of distal limb development in foals, particularly the foot, is limited. These findings define the measurable changes of the foal foot as it grows during the first year of life. These data provide an insight into the transformation of the hoof from its initial oval to a circular shape and from a club-like, cylindrical conformation to a more angled, conical conformation. This paper quantifies this development, ultimately allowing a better understanding of morphological changes in the foot of the growing foal.
Assessment of T2 Relaxation Times for Normal Canine Knee Articular Cartilage by T2 Mapping Using 1.5-T Magnetic Resonance Imaging
Authors: Matsui Asami , Shimizu Miki , Beale Brian , Takahashi Fumitaka , Yamaguchi Sinya
Published: January 2018

Objectives This study aims to assess and compare the T2 relaxation times for articular cartilage of normal canine stifle joints in four regions by T2 mapping using a 1.5-T magnetic resonance imaging (MRI).

Methods In vivo prospective study: 20 hindlimbs (left and right) from 10 normal healthy beagle dogs (n = 20). The region of interest (ROI) was subdivided into medial and lateral condyles of femoral cartilage (MF and LF, respectively) and medial and lateral condyles of tibial cartilage (MT and LT, respectively). The T2 relaxation times were assessed in regions where the cartilage thickness was greater than 0.5 mm.

Results The median maximum cartilage thickness (mm) of the four ROI were 0.7 (range: 0.9–0.6), 0.6 (range: 0.7–0.5), 0.7 (range: 0.9–0.5) and 0.6 (range: 0.8–0.5) at MF, LF, MT and LT, respectively. The errors in the measurement (%) of the four ROI were 64.3 (range: 50.0–75.0), 75.0 (range: 64.3–90.0), 64.3 (range: 20.0–90.0) and 75.0 (range: 56.3–90.0) at MF, LF, MT and LT, respectively. The median T2 relaxation times (ms) for the articular cartilage of the four ROI were 70.2 (range: 57.9–87.9), 57.5 (range: 46.8–66.9), 65.0 (range: 52.0–92.0) and 57.0 (range: 49.0–66.2) at MF, LF, MT and LT, respectively. The inter-observer correlation coefficient (ICC, 2.1) for the T2 relaxation times of MF was 0.644.

Clinical Significance This study offers useful information on T2 relaxation times for articular cartilage of the stifle joint using a 1.5-T MRI in normal dogs.
Computed Tomographic Analysis of Ventral Atlantoaxial Optimal Safe Implantation Corridors in 27 Dogs
Authors: Leblond Guillaume , Gaitero Luis , Moens Noel , zur Linden Alex , James Fiona , Monteith Gabrielle , Runciman John
Published: January 2018

Objectives Ventral atlantoaxial stabilization techniques are challenging surgical procedures in dogs. Available surgical guidelines are based upon subjective anatomical landmarks, and limited radiographic and computed tomographic data. The aims of this study were (1) to provide detailed anatomical descriptions of atlantoaxial optimal safe implantation corridors to generate objective recommendations for optimal implant placements and (2) to compare anatomical data obtained in non-affected Toy breed dogs, affected Toy breed dogs suffering from atlantoaxial instability and non-affected Beagle dogs.

Methods Anatomical data were collected from a prospectively recruited population of 27 dogs using a previously validated method of optimal safe implantation corridor analysis using computed tomographic images.

Results Optimal implant positions and three-dimensional numerical data were generated successfully in all cases. Anatomical landmarks could be used to generate objective definitions of optimal insertion points which were applicable across all three groups. Overall the geometrical distribution of all implant sites was similar in all three groups with a few exceptions.

Clinical Significance This study provides extensive anatomical data available to facilitate surgical planning of implant placement for atlantoaxial stabilization. Our data suggest that non-affected Toy breed dogs and non-affected Beagle dogs constitute reasonable research models to study atlantoaxial stabilization constructs.
Atomic layer deposition and properties of ZrO2/Fe2O3 thin films
Authors: Kalam Kristjan , Seemen Helina , Ritslaid Peeter , Rähn Mihkel , Tamm Aile , Kukli Kaupo , Kasikov Aarne , Link Joosep , Stern Raivo , Dueñas Salvador , Castán Helena , García Héctor
Published: January 2018

Thin solid films consisting of ZrO2 and Fe2O3 were grown by atomic layer deposition (ALD) at 400 °C. Metastable phases of ZrO2 were stabilized by Fe2O3 doping. The number of alternating ZrO2 and Fe2O3 deposition cycles were varied in order to achieve films with different cation ratios. The influence of annealing on the composition and structure of the thin films was investigated. Additionally, the influence of composition and structure on electrical and magnetic properties was studied. Several samples exhibited a measurable saturation magnetization and most of the samples exhibited a charge polarization. Both phenomena were observed in the sample with a Zr/Fe atomic ratio of 2.0.
Practical Application of Exclusive and Inclusive Talent Management Strategy in Companies
Authors: Savanevičienė Asta , Vilčiauskaitė Birutė
Published: January 2018

The article deals with the practical application of exclusive and inclusive talent management strategies in order to form and maintain a competitive human resource potential of the company. The features of both exclusive and inclusive talent management strategies were defined and their practical appication in companies of various Lithuaniam industries was studied. The input from the respondents suggests that major companies prefer the inclusive talent management strategy, rather than exclusive. Summing up all the research results, the following conclusions were formulated: the features characteristic to inclusive talent management strategy dominate in the companies of manufacturing, banking, catering, consulting, trade, energy, transport, and agribusiness industries. In the company of technology industry, features of a mixed (having both exclusive and inclusive) talent management strategy are apparent. The company in the construction-engineering industry has the dominating features of exclusive talent management strategy. Inclusive talent management strategy responds to the principles of human potential development-oriented expression and is an important message for the formulation of further insight into talent management, based on the use of internal potential.
Importance of Motivation and Work Pay of Young Employees in the Value Creation Chain of a Business Company: Assessment of Changes in and Formation of Expectations
Authors: Pilukienė Laura
Published: January 2018

As business companies compete in the market and seek to acquire a competitive advantage, one of the most important factors is well-motivated employees who are satisfied with their job. The success of companies operating in various sectors is determined by the quality of products, while the quality is ensured by qualified employees having appropriate skills and knowledge, whose work should be appreciated by monetary work pay established based on reasonable and clear criteria as well as other means of motivation. The process of human resources management in a business company places an ever-growing importance on the development of competences of employees, strengthening of cooperation, empowerment of employees as well as their work pay and motivation in order to achieve an employee’s work quality and productivity, satisfaction of customer needs and successful operation of a company. In the process of the company’s human resources management, special focus should be given to the satisfaction of the expectations and needs of new employees (who are usually young and inexperienced) as well as their integration, which ensures the generation of new and creative ideas in the company and, at the same time, high quality of products and work productivity.
Entrepreneurship in Crisis: the Determinants of Syrian Students’ Entrepreneurial Intentions
Authors: Mouselli Sulaiman , Khalifa Bayan
Published: January 2018

This study aims at investigating the factors that affect the entrepreneurial intentions of university students in Syria. The impact of three groups of factors was investigated, demographic, personal, and external factors. The questionnaire survey method was applied. Data was collected from two major universities in Syria: Damascus University and Arab International University and two faculties: Business and Economics, and Informatics and Communication Engineering. We analyze 183 responses from the above-mentioned faculties to understand whether differences exist in entrepreneurial intentions between students from different universities and faculties. Also, we use ordinary least squares to uncover the determinants of entrepreneurial intentions for those students. The results show higher entrepreneurial intentions for Informatics and Communication Engineering and for male students. Moreover, self-efficacy, information and communication, institutional environment come to have positive and significant impacts on entrepreneurial intentions. We recommend that more polices should be directed towards developing female entrepreneurial intents. Also, entrepreneurship training courses should be offered to Informatics and Communication Engineering to enable them turn their intentions into projects. Furthermore, universities should consider establishing entrepreneurship centers, incubators and science parks that foster innovative ideas and support start-ups.
Efficacy and safety of linezolid versus teicoplanin for the treatment of MRSA infections: a meta-analysis
Authors: Chen Hao , Li Lan , Wu Maomao , Xu Shuangli , Wang Mingli , Li Jiabin , Huang Xiaohui
Published: January 2018

Introduction: Methicillin-resistant Staphylococcus aureus (MRSA) is an important cause of serious infections. Linezolid and teicoplanin are widely used in the treatment of infections caused by MRSA. However, the efficacy and safety of linezolid compared with teicoplanin remains controversial. The purpose of this study was to systematically review the efficacy and safety of linezolid versus teicoplanin for the treatment of MRSA infections.

Methodology: A meta-analysis was performed on the published studies. Pooled relative risk (RR) and 95% confidence interval (95% CI) were calculated to determine whether there were significant differences between the linezolid group and the teicoplanin group on the efficacy and safety.

Results: Seventeen studies were included, involving 2,040 patients. The results showed that linezolid was associated with better clinical cure rate (RR = 1.14, 95% CI = 1.08-1.21, p < 0.00001) and microbiological eradication rate (RR = 1.28, 95% CI = 1.18-1.39, p < 0.00001) compared with teicoplanin. There were no statistically significant differences between the two groups in the treatment of MRSA infections regarding the adverse events (RR = 1.15, 95% CI = 0.97-1.35, p = 0.10) and the mortality (RR = 0.85, 95% CI = 0.61-1.18, p = 0.33).

Conclusions: The results suggest that linezolid may be a better choice for the treatment of patients with MRSA infections. However, our recommendation is that the decision about treating MRSA infections with linezolid or with teicoplanin should depend on local availability, patient population, dosage regimens, costs and safety, rather than presumed differences in efficacy.
Le rôle des Business Improvement Districts dans la recomposition des activités de service public à New York
Authors: Benelli Natalie
Published: January 2018

Résumé Depuis les années 1980, les propriétaires immobiliers des quartiers commerciaux de la ville de New York sont autorisés à former des organisations à but non lucratif pour améliorer les conditions d’exercice des commerces dans un périmètre déterminé. Suite aux coupes budgétaires dont les services municipaux ont fait l’objet, les Business Improvement Districts jouent désormais un rôle central dans la recomposition des activités de service public local. La nouvelle division du travail entre la municipalité et le secteur privé dans les domaines de la propreté et de la sécurité urbaines se fonde sur l’exploitation d’une main-d’œuvre recrutée parmi les populations les plus défavorisées de la ville et le recours au travail des personnes condamnées à des travaux d’utilité publique.
La maîtrise des données, un enjeu majeur pour les associations naturalistes à l’heure de la gouvernance de la biodiversité
Authors: Fortier Agnès , Alphandéry Pierre
Published: January 2018

Résumé Cet article analyse la transformation des rapports entre les associations naturalistes et l’État dans le contexte de la gouvernance globale de la biodiversité. L’adoption de cette dernière comme norme d’action à l’échelle internationale conduit à un processus de rationalisation des données produites par les associations. Nous montrons que la production de données au sein du monde associatif s’appuie sur des considérations scientifiques tout en étant « encastrée » dans le contexte local et marquée par divers types d’attachements. Nous analysons les formes de résistances associatives à la normalisation et à l’ouverture des données publiques comme l’incarnation de la force du lien associatif et l›importance du rôle politique local joué par les associations.
Accueillir l’étranger ?
Authors: Popper Haydée
Published: January 2018

L’auteur propose d’interroger la position du thérapeute analyste, dans les cas engageant la question de la rencontre avec de l’étranger. Entre être témoin et être dans une position tierce, quelle est l’évolution possible et nécessaire ? Cette position est notamment soumise à des effets groupaux inter- et intra-subjectifs et génère une co-construction dans l’espace thérapeutique. L’auteur propose d’analyser un cas clinique de thérapie familiale où la question de l’étranger est présente et d’accompagner son évolution.
L’accueil du « nouveau »
Authors: Diet Emmanuel
Published: January 2018

Le nouveau est une figure de l’étranger qui, toujours vécu comme intrus, suscite ambivalence et rejet et remet en question l’économie psychique et les alliances des groupes qui le rencontrent et dans lesquels il doit ou souhaite prendre place. Pour pallier le surgissement de la haine et permettre son intégration, les groupes, selon leur nature et le contexte social-historique, mettent en place des rituels afin de soutenir le processus initiatique d’affiliation. Dans le contexte de l’anomie contemporaine et de la désubjectivation hypermoderne, la question du contrat narcissique resurgit comme urgente nécessité d’articuler le transsubjectif, l’intersubjectif et l’idiosyncrasique comme condition de l’accueil du nouveau.
L’appartenance, le double et l’ensemble en psychothérapie psychanalytique de groupe
Authors: Clit Radu
Published: January 2018

À partir de la présentation de deux séances de psychothérapie psychanalytique d’un groupe de schizophrènes, qui se réunit en cattp , cette étude tente de montrer l’importance du rapport image de soi-image collective dans la constitution et le maintien de l’ensemble. La première séance montre que l’hypothèse de base est dépendance (Bion). La deuxième signale un moment étrange, provoqué par un nouveau patient. Trois aspects seront discutés : l’inquiétant et la problématique du double (Freud), le rapport entre appartenance primaire et secondaire (Rouchy), et la question de l’ensemble. La conclusion est que le double serait une sorte d’image collective, constituant l’étayage groupal de l’image de soi de chaque participant, dans la mesure où il ne met pas en danger l’ensemble.
De la pluridisciplinarité dans un groupe d’analyse des pratiques professionnelles : illusion corporatiste et figures de l’étranger
Authors: Maurin Souvignet Aurélie , Pechberty Bernard
Published: January 2018

Ce texte s’appuie sur une expérience de co-animation d’un dispositif d’analyse clinique des pratiques professionnelles, d’orientation psychanalytique, qui s’inspire du modèle proposé par M. Balint. Il réunit des praticiens de métiers différents et se tient dans un cadre libéral. On décrit ici les dynamiques psychiques des récits professionnels énoncés et leurs liens avec la dimension groupale, prise en compte par les animateurs. En rapport avec les notions d’illusion groupale, individualiste et corporatiste, des exemples d’interactions spécifiques à ce type de groupe sont proposés. Des expériences premières d’étrangeté envers le groupe, envers les autres professionnels et envers soi, se transforment en familiarisation puis dans de nouvelles différenciations ou l’altérité est davantage prise en compte, aux niveaux professionnels et personnels, mobilisant différents mécanismes projectifs et identificatoires.
Les contournements discrets de l'impôt
Authors: Herlin-Giret Camille
Published: January 2018

Résumé Cet article propose d'analyser les contournements discrets de l'impôt de solidarité sur la fortune (ISF) à partir d'entretiens réalisés avec des redevables. L'examen des pratiques de règlement d'un impôt déclaratif éclaire sous un jour nouveau la problématique du consentement à l'impôt, au prisme des usages différenciés que les assujettis ont du droit. À rebours de l'argument utilitariste qui attribuerait la sous-évaluation des biens ou les transferts entre argent de l'impôt et argent du don au seul calcul coût avantage réalisé par les assujettis pour minimiser les sommes dues à l'État, l'article met en lumière l'ancrage collectif et conventionnel de ces pratiques. L'apprentissage d'une forme policée et discrète de résistance à la transformation de l'argent privé en argent public ne va précisément pas de soi pour les redevables les plus éloignés de la bourgeoisie.
Ruptures de riches
Authors: Biland Émilie , Mille Muriel
Published: January 2018

Les séparations des couples québécois fortunés constituent un observatoire des rapports au droit des classes dominantes. Dix cas ethnographiques, rassemblés à partir d'entretiens et d'observations au tribunal et dans des cabinets d'avocat·e·s, et complétés par une centaine de dossiers judiciaires, montrent le traitement judiciaire exceptionnel auquel ces couples ont accès en comparaison de ceux des autres milieux sociaux. Leurs capitaux et leurs styles de vie, ainsi que l'empathie et la compétence technique des professionnel·le·s les aident à utiliser toutes les ressources du droit pour faire valoir leurs droits. Ces couples très inégalitaires parviennent à jouer avec les rapports de genre de façon significative : les pères obtiennent plus souvent la garde des enfants, les épouses peuvent espérer voir leu investissement familial financièrement reconnu. Les inégalités de genre demeurent cependant prégnantes, les femmes étant conduites à faire davantage de concessions que les hommes.
Planar asymmetric dual diode for millimetre wave detection and power measurement
Authors: Sužiedėlis Algirdas , Ašmontas Steponas , Gradauskas Jonas , Šilėnas Aldis , Čerškus Aurimas , Lučun Andžej , Paškevič Česlav , Anbinderis Maksimas , Žalys Ovidijus Alfonsas
Published: January 2018

The design of a simple cost-effective planar semiconductor microwave diode is proposed. The operation is based on hot carrier phenomena and rectification of microwave currents flowing through the structure composed of two diodes connected in series and having different active region areas. A simplified technological process and the use of simplex semiconductor material result in the reduction of both the time and the cost of fabrication of a dual microwave diode. By choosing an appropriate GaAs substrate, two types of microwave diodes were produced simultaneously: one almost demonstrating the ohmic behaviour and the other two having the asymmetrical Schottky-like I–V characteristic. The Schottky-like planar diodes exhibited a higher responsivity to millimetre range microwave radiation and a faster response to pulsed (down to a nanosecond scale) excitation, but the ohmic ones demonstrated better noise properties.
Conversos y librepensamiento. A la búsqueda de algunas huellas (ss. XVI y XVII)
Authors: Schreiber Markus
Published: January 2018

En los siglos XVI y XVII, en el entorno de los cristianos nuevos ibéricos se detectan algunas manifestaciones radicales de desvinculación religiosa. Prosiguiendo las investigaciones de Yitzhak Baer, Carl Gebhardt y sobre todo de Israël S. Révah, esos fenómenos han sido repetidamente vinculados tanto con el «averroísmo» judío bajomedieval como con la filosofía spinoziana del seiscientos. Sin embargo, nos parecen posibles más enfoques. Aquí, queremos presentar esas corrientes de incredulidad conversa sobre su trasfondo académico y enmarcadas en el contexto europeo, prestando una atención particular a un grupo de cinco médicos cristianos nuevos que, alrededor de 1630, estudiaron juntos en la Universidad de Alcalá de Henares.
¿Merú Levy lexicógrafa? Definiciones y aclaraciones léxicas en el fichero de Cynthia M. Crews
Authors: Fernández Martín Elisabeth
Published: January 2018

El presente trabajo tiene por objetivo abordar la contribución de la informante oral Merú Levy al fichero léxico del judeoespañol de Cynthia Crews y, especialmente, sus definiciones sinonímicas y perifrásticas, con el fin de determinar su autenticidad, establecer –en la medida de lo posible– si son producto de su idiolecto y examinar su fiabilidad como definiciones lexicográficas válidas. Una vez seleccionadas estas explicaciones de entre los miles de papeletas que componen el fichero, el corpus ha quedado formado por más de cuatrocientos ejemplos, que son los que han servido de base para realizar el presente estudio. Así pues, el artículo consta de: (I) una introducción, donde se presenta el fichero léxico del judeoespañol y las fuentes que lo conforman; (II) una contextualización de la figura de Merú y presentación de su contribución al fichero; (III) una descripción y análisis lingüístico de las aclaraciones léxicas; y (IV) las conclusiones.
Palhaço de hospital: percepções do profissional da enfermagem de uma unidade pediátrica/Hospital clown: perceptions of the nursing worker of a pediatric unit
Authors: Oliveira Camila De Souza , Claudio Caroline Vieira , Ribeiro Renata Perfeito , Trevisan Julia Martins
Published: January 2018

Estudo teve como objetivo analisar a percepção dos profissionais de enfermagem de uma unidade pediátrica que recebe visitas de palhaços do projeto SensibilizArte. Descritivo, qualitativo, realizado entre julho e setembro de 2015, com a participação de seis trabalhadores de enfermagem de uma unidade pediátrica de um hospital universitário. Os resultados foram submetidos à análise de conteúdo e classificados em cinco categorias: Bem-estar do trabalhador de enfermagem; Melhora na interação e comunicação com a equipe de enfermagem; Ajuda a diminuir o estresse da criança e da equipe; Valorizando o trabalho do palhaço e Utilizando a técnica do palhaço para a assistência de enfermagem. Conclui-se que as participantes perceberam a importância da figura do palhaço e reconhecem e valorizam seu trabalho. Notaram que com a sua participação ocorre alivio da carga emocional do trabalhador, das crianças, melhora do ambiente laboral e colaboração com a prestação dos cuidados, diminuindo a insegurança das crianças.
UMA PROPOSTA EXPERIMENTAL PARA INVESTIGAR O PROCESSO DE OSMOSE EM AULAS DE QUÍMICA
Authors: Arrigo Viviane , Anjos Luiz Carlos Giachello dos , Assai Natany Dayani De Souza , Lorencini Júnior Álvaro
Published: January 2018

Devido às dificuldades de aprendizagem apresentadas pelos alunos acerca do processo de osmose e ao modo como os professores o abordam, o objetivo desta investigação residiu em identificar as potencialidades de uma atividade experimental de natureza investigativa para oportunizar a construção de conhecimento acerca do processo de osmose. Os dados analisados consistem em respostas fornecidas por alunos de um curso Técnico em Química a situações-problema disponibilizadas antes e após a realização da atividade. Para a interpretação dos resultados obtidos, pautamo-nos nos procedimentos analíticos da Análise de Conteúdo. A análise das respostas fornecidas anteriormente à realização da atividade possibilitou a identificação das ideias/concepções prévias dos alunos em relação ao fenômeno investigado. Elas indicaram um desconhecimento do processo de osmose e a necessidade de se promover uma ressignificação conceitual por parte dos alunos. Já as respostas fornecidas após a realização da atividade apresentaram uma maior proximidade com a resposta cientificamente correta, o que nos leva a interpretar que houve uma evolução no perfil conceitual dos alunos. Consideramos que a atividade desenvolvida valorizou o pensamento dos alunos, tornando-os agentes do próprio aprendizado à medida que elaboravam hipóteses e buscavam soluções para os problemas investigados.
FORMAÇÃO DE PESQUISADOR PARA EDUCADORES E SEUS LIMITES
Authors: Dias Marian Avila de Lima e , Dias Viviane Borges , Crochík José Leon
Published: January 2018

Este texto objetiva discutir a pesquisa empírica na formação de educadores como um meio de reflexão sobre as relações teoria/prática e sujeito/objeto. A discussão está fundamentada na Teoria Crítica da Sociedade e em estudos sobre a pesquisa empírica nos cursos de licenciatura que, embora tenha seu valor reconhecido na formação de educadores, ainda apresenta grandes lacunas no que diz respeito à forma como esse modo de aquisição de conhecimento é abordado nos referidos cursos. A dimensão da formação em pesquisa também é colocada sob exame por meio de relato de experiência realizada em uma disciplina do curso de Pedagogia da Universidade Federal de São Paulo, no segundo semestre de 2016, tendo a educação inclusiva, o preconceito e o bullying como temáticas orientadoras. Concluiu-se pela importância da defesa e fortalecimento da pesquisa na formação de professores, desde que considerados os seus limites, em contraposição a uma formação exclusivamente baseada ou na prática ou na teoria, sem negar a importância de ambas, para o aprofundamento da compreensão e da aplicação dos dados coligidos e interpretados nas pesquisas.
Implementation of Life Cycle Assessment Method (LCA) and Analytical Hierarchy Process (AHP) to Determine the Development of Recycling Unit of Waste Water in Grati CCPP PT Indonesia Power up Perak Grati
Authors: Tartiarini Mila , Ciptomulyono Udisubakti
Published: January 2018

Waste water result from operating activities of Grati Combined Cycled Power Plant (CCPP) is significant amount and has potentially to be reutilized. A recycling unit as the pilot project has been applied in Grati CCPP PT Indonesia Power UP Perak Grati for capacity 4 tons/hour of service water product. Development plant of Grati CCPP up to year 2018 will produce more amounts of waste water, and potentially increase the pollution load in the unit area.Considering the use of alternative development for unit recycled waste water effluent from the Waste Water Treatment Plant (WWTP) has implications to the environmental and cost aspects, therefore a proper assessment to decide the alternative is needed. Proposed method of Life Cycle Assessment (LCA) is to measure the impact to the environment. And the Cost Benefit Analysis (CBA) is to measure the economic criteria. To integrate the results of the two methods, it is used and calculated by using Hierarcy Analytical Process (AHP).The result of the study about the environmental impact and economic analysis, the development of the recycling unit is required to process all waste water produced by power plants. Focus group by experts in power plant operation using AHP is based on the results of SimaPro 7.0 and CBA. The most beneficial result is with a single score of 0.2314 Pt / 1 ton of water service, the payback period of 2.5 years, 37.5% IRR and NPV US$ 88,577.23 and the MMF-RO unit for total capacity of 14 tons/hour has become the most alternative of development.
Human Error Assessment and Reduction Technique for Reducing the Number of Marine Accidents in Indonesia
Authors: Bowo Ludfi Pratiwi , Furusho Masao
Published: January 2018

Human factors is playing an important role in every accident, particularly marine accidents. Hence, a lot of researches were conducted to analyze the human factors involvement in the accidents. Since the development of marine industry shows progressively increasing nowadays, especially in Indonesia, as Indonesia vision to be a global maritime axis of the world for marine industry, the awareness of safety life at sea has to be increase as well. Human reliability analysis (HRA) consist of many methodologies to analyze the accidents, the basic steps of HRA is qualitative method and quantitative method, one of the HRA methodology is Human Error Assessment and Reduction Technique (HEART) methodology which has been established in 1982 to assess nuclear power plant. HEART methodology is applied in this study to analyze the cause of marine accidents by human factors. The aims of this study are to know the main cause of accidents by human factors, to increase the awareness of safety at sea especially, and furthermore to improve the quality of ergonomics at sea. There are 93 EPC which discovered in this study for analyzing marine accidents in Indonesia.
Fatigue Failure of a Composite Wind Turbine Blade at the Trailing Edge
Authors: Pan Zu Jin , Wu Jian Zhong , Liu Jian , Zhao Xin Hua
Published: January 2018

The downtime problem of wind turbine increases due to fatigue damage of wind turbine blades, which is even more crucial in the larger blades. One of the critical failure modes is the blade trailing edge failure, which can result in the trailing edge joint cracked. In this paper, we experienced that abnormal sound was happened in the trailing edge at the cross-section in the max chord during fatigue testing of a 2 MW full-scale wind turbine blade according to IEC61400-23. Through the conditional monitoring of the trailing edge, the delamination between GFRP and balsa wood is caused by stress concentration. The abnormal sound is happened due to GFRP beat the balsa wood when the blade vibrates in the edgewise direction. Moreover, the sound is amplified because the introduction of air due to the delamination. The local stress distribution and stability factors are computed through FEM methods, the program that increasing the core materials in the trailing edge is proposed. Therefore the structure reliability in the trailing edge is improved.
Preparation Polyisoprene (NR) and Polyacrylonitrile Rubber Latex Glove Films by Dipping Ceramic Hand Molds Process and their Properties
Authors: Sornsanee Puwitoo , Jitprarop Vichasharn , Tangboriboon Nuchnapa
Published: January 2018

Both synthetic and natural rubber latex can be used to form rubber latex glove films for medical and dental applications. The objective in this research is to study the natural and synthetic rubber latex glove films formation by dipping process with the bone china ceramic hand molds for 5, 10, and 15 min. From the experimental, the obtained natural rubber latex glove films are good appearance and good physical-mechanical properties i.e. smooth film surface, light pale yellow color, soft, translucent, high tensile strength, high elongation at break, and high flexibility better than those of synthetic rubber latex glove films. When the dipping time of bone china hand mold into natural rubber latex compound increases effect to tensile strength, thickness, and elongation at break increase. Tensile strength, elongation at break, and tensile stress of natural rubber latex films dipped for 15 min are equal to 12.82 ± 1.19 MPa, 1090.91 ± 4.92%, and 39.23 ± 3.63 N, respectively.
Durability of Cement Based Mortars Containing Crystalline Additives
Authors: Žižková Nikol , Nevřivová Lenka , Lédl Matěj
Published: January 2018

The paper focuses on the study of the durability of cement mortars made with secondary crystallization additives. It investigates the influence of the crystalline additives on the degradation process of cement mortars exposed to gaseous CO2and freezing cycles. The specimens with were tested for compressive and flexural strength at the following ages and after being treated by the following curing techniques: 28 days, 180 days and 25 freezing cycles, 28 days and 180 days in gaseous CO2. In order to explain the obtained results and to gain new information about the microstructure of the cement mortars being studied, the SEM sampling and RDA analysis were performed. The research results confirm an improvement in the resistance of cement based mortars using crystalline additives against cyclic freezing as well as gaseous CO2. An important parameter that influences the effectiveness of the crystalline additive is the curing conditions during the first 28 days of ageing.
Plasma Surface Modification of Poly(Lactic-co-Ricinoleic Acid)Urethane: Chemical and Biological Characterizations
Authors: Sumaray Catherine C. , Ngan Emil T. , Reyes Larry Q.
Published: January 2018

Poly (ester urethane) s (PEUs) based on L-lactic acid (LA) and ricinoleic acid (RA), 1,6-hexamethylene diisocyanate (HMDI) were synthesized via polycondensation-chain extension reaction. Melt polycondensation reaction was carried out to produce the prepolymer poly (L-lactic acid-co-ricinoleic acid), with number average molecular weights (Mw) ranging from 3,000 to 10,000 g/mol. The weight ratio between LA with RA were 100:0, 95:5, 90:10, 80:20. The PEUs PEU100:0, PEU95:05, PEU 90:10 and PEU 80:20 were observed to be soft solids. Molecular weights increased after chain extension/coupling reaction with the diisocyanate, producing polymers with Mwranging from 60,000 to 115,000 g/mol. The production of poly (L-lactic acid-co-ricinoleic acid urethane) was verified by infrared (FTIR) and proton-nuclear magnetic (H1-NMR) spectroscopy. The poly (L-lactic acid) and the urethane groups are believed to form hard segment while the poly (ricinoleic acid) segment is the soft segment group. Moreover, oxygen plasma surface modification was also employed to alter the surface properties of the PEU samples Based on scanning electron microscopy (SEM), the surface roughens and hydroxyapatite mineralization were improved after the plasma treatment. The PEU materials were also found to be biocompatible with L929 mouse normal fibroblast cells.
Magnetic and Mechanical Properties of the Amorphous Alloys
Authors: Tsepelev Vladimir , Starodubtsev Yuri , Wu Kai Ming , Tsepeleva Nadezhda , Taushkanova Alisa
Published: January 2018

It is clearly seen that the magnetic induction of the amorphous ribbon produced by conventional technology implying heating up to 1490 °С increases as the thickness of specimens increases, with this growth being especially intensive at the 100 А/m magnetic field strength. At the same time, the melt preparation supplemented by overheating contributes to the magnetic induction stabilization, i.e. magnetic induction is essentially independent of the ribbon’s thickness. It is only at high values of h that a slight increase in magnetic induction becomes evident. The fracture diameter of the free side surface is linearly increasing as the annealing temperature increases. The structure has been shown to influence magnetic and mechanical properties of the material in preparing the melt before casting.
Non-Isothermal Crystallization and Viscoelastic Behavior of Polypropylene/Nanoclay Composites Fabricated from Masterbatch by Using a Mini Extruder
Authors: Chafidz Achmad , Faisal R.M. , Kaavessina Mujtahid , Hartanto Dhoni
Published: January 2018

Polypropylene(PP)/nanoclay composites samples have been fabricated by melt compounding the PP pellets with nanoclay masterbatch (i.e. 50 wt% of nanoclay) using a mini extruder. The effect of three loadings of nanoclay (i.e. 5, 10, and 15 wt%) on the morphology, non-isothermal crystallization, and viscoelastic behavior of the PP/nanoclay composites were investigated. All the nanocomposites samples were characterized by using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and an oscillatory rheometer. The SEM results showed that the distribution of nanoclay in the PP was relatively good at all level of loadings. The DSC analysis results showed that the nanoclay has dramatically enhanced the crystallization temperature, from 117°C (for neat PP) to 127-129°C (for nanocomposites). Additionally, the frequency sweep test results exhibited that the presence of nanoclay increased the viscoelastic behavior of the PP matrix.
Intrathymic Deletion of IL-7 Reveals a Contribution of the Bone Marrow to Thymic Rebound Induced by Androgen Blockade
Authors: Rodrigues Pedro M. , Ribeiro Ana R. , Serafini Nicolas , Meireles Catarina , Di Santo James P. , Alves Nuno L.
Published: January 2018

Despite the well-documented effect of castration in thymic regeneration, the singular contribution of the bone marrow (BM) versus the thymus to this process remains unclear. The chief role of IL-7 in pre- and intrathymic stages of T lymphopoiesis led us to investigate the impact of disrupting this cytokine during thymic rebound induced by androgen blockade. We found that castration promoted thymopoiesis in young and aged wild-type mice. In contrast, only young germline IL-7–deficient (Il7−/−) mice consistently augmented thymopoiesis after castration. The increase in T cell production was accompanied by the expansion of the sparse medullary thymic epithelial cell and the peripheral T cell compartment in young Il7−/− mice. In contrast to young Il7−/− and wild-type mice, the poor thymic response of aged Il7−/− mice after castration was associated with a defect in the expansion of BM hematopoietic progenitors. These findings suggest that BM-derived T cell precursors contribute to thymic rebound driven by androgen blockade. To assess the role of IL-7 within the thymus, we generated mice with conditional deletion of IL-7 (Il7 conditional knockout [cKO]) in thymic epithelial cells. As expected, Il7cKO mice presented a profound defect in T cell development while maintaining an intact BM hematopoietic compartment across life. Unlike Il7−/− mice, castration promoted the expansion of BM precursors and enhanced thymic activity in Il7cKO mice independently of age. Our findings suggest that the mobilization of BM precursors acts as a prime catalyst of castration-driven thymopoiesis.