bluuebunny/crossref_metadata_2025 huggingface dataset:
Highly Sensitive Sputtered ZnO:Ga Thin Films Integrated by a Simple Stencil Mask Process on Microsensor Platforms for Sub-ppm Acetaldehyde Detection
Authors: Presmanes Lionel , Thimont Yohann , Chapelle Audrey , Blanc Frédéric , Talhi Chabane , Bonningue Corine , Barnabé Antoine , Menini Philippe , Tailhades Philippe
Published: May 2017

The integration of a 50-nm-thick layer of an innovative sensitive material on microsensors has been developed based on silicon micro-hotplates. In this study, integration of ZnO:Ga via radio-frequency (RF) sputtering has been successfully combined with a low cost and reliable stencil mask technique to obtain repeatable sensing layers on top of interdigitated electrodes. The variation of the resistance of this n-type Ga-doped ZnO has been measured under sub-ppm traces (500 ppb) of acetaldehyde (C2H4O). Thanks to the microheater designed into a thin membrane, the generation of very rapid temperature variations (from room temperature to 550 °C in 25 ms) is possible, and a rapid cycled pulsed-temperature operating mode can be applied to the sensor. This approach reveals a strong improvement of sensing performances with a huge sensitivity between 10 and 1000, depending on the working pulsed-temperature level.
Inkjet-Printed Membrane for a Capacitive Acoustic Sensor: Development and Characterization Using Laser Vibrometer
Authors: Haque Rubaiyet , Ogam Erick , Benaben Patrick , Boddaert Xavier
Published: May 2017

This paper describes the fabrication process and the method to determine the membrane tension and defects of an inkjet-printed circular diaphragm. The membrane tension is an important parameter to design and fabricate an acoustic sensor and resonator with the highest sensitivity and selectivity over a determined range of frequency. During this work, the diaphragms are fabricated by inkjet printing of conductive silver ink on pre-strained Mylar thin films, and the membrane tension is determined using the resonant frequency obtained from its measured surface velocity response to an acoustic excitation. The membrane is excited by an acoustic pressure generated by a loudspeaker, and its displacement (response) is acquired using a laser Doppler vibrometer (LDV). The response of the fabricated membrane demonstrates good correlation with the numerical result. However, the inkjet-printed membrane exhibits undesired peaks, which appeared to be due to defects at their boundaries as observed from the scanning mode of LDV.
A Novel Real-Time Reference Key Frame Scan Matching Method
Authors: Mohamed Haytham , Moussa Adel , Elhabiby Mohamed , El-Sheimy Naser , Sesay Abu
Published: May 2017

Unmanned aerial vehicles represent an effective technology for indoor search and rescue operations. Typically, most indoor missions’ environments would be unknown, unstructured, and/or dynamic. Navigation of UAVs in such environments is addressed by simultaneous localization and mapping approach using either local or global approaches. Both approaches suffer from accumulated errors and high processing time due to the iterative nature of the scan matching method. Moreover, point-to-point scan matching is prone to outlier association processes. This paper proposes a low-cost novel method for 2D real-time scan matching based on a reference key frame (RKF). RKF is a hybrid scan matching technique comprised of feature-to-feature and point-to-point approaches. This algorithm aims at mitigating errors accumulation using the key frame technique, which is inspired from video streaming broadcast process. The algorithm depends on the iterative closest point algorithm during the lack of linear features which is typically exhibited in unstructured environments. The algorithm switches back to the RKF once linear features are detected. To validate and evaluate the algorithm, the mapping performance and time consumption are compared with various algorithms in static and dynamic environments. The performance of the algorithm exhibits promising navigational, mapping results and very short computational time, that indicates the potential use of the new algorithm with real-time systems.
An Environmental Perspective on Clothing Consumption: Consumer Segments and Their Behavioral Patterns
Authors: Gwozdz Wencke , Steensen Nielsen Kristian , Müller Tina
Published: May 2017

Efforts to decrease the environmental impact of today’s clothing industry across the entire process of production, purchase, maintenance, and disposal can be driven by either suppliers or consumers. Changing the behavior of the latter, however, requires an understanding of current clothing consumption patterns—a currently under-researched area. We therefore shed more light on these patterns in the purchase, use and maintenance, and discard phases by analyzing unique data on 4617 adult consumers (aged 18–65) from Germany, Poland, Sweden, and the U.S., who we divide into five segments based on clothing consumption behavior. At the low end of the spectrum is a consumer segment that earns the least, consumes mostly budget brand clothing, and is the least open to alternative more environmentally friendly business models such as fashion leasing or clothing libraries. At the other extreme lies a small segment that earns the most, engages in high consumption of medium or premium brand clothing, and is most open to alternative business models. Lying between these two is a primarily female segment that purchases an above average amount of clothing from budget brands. In addition to the segments’ different reported purchase behavior and a varying openness to alternative business models, we identify differences in willingness to pay for clothing made of material that is more environmentally friendly than conventional fabrics. These observations suggest several promising directions for environmental interventions tailored toward specific consumer segments.
Promoting the Opportunity Identification of Industrial Symbiosis: Agent-Based Modeling Inspired by Innovation Diffusion Theory
Authors: Zheng Kaifang , Jia Suling
Published: May 2017

Promotion of the emergence of synergistic linkages between different firms is crucial in the development of Industrial Symbiosis (IS) networks or Eco-Industrial Parks (EIP). Appropriate strategies for the promotion of inter-firm interactions are required to enhance the emergence of IS networks through institutional capacity building. This research draws on insight from Diffusion of Innovations (DoI) theory, and considers the emergence and development of IS as a process where the knowledge, attitude and implementation of IS synergies are gradually adopted by firms. Accordingly, we propose an Agent-Based Model (ABM) to investigate the influence of promoting strategies associated with various dimensions of institutional capabilities, on the identification of opportunity sets for IS synergies. The simulation results show that both “Knowledge Coordination” and “Relationship Coordination” have a positive impact on the identification of IS opportunities (represented by the adoption of positive attitudes). However, the performance of promoting strategies depends to a great extent on the mobilization capacity and the characteristics of the specific IS solutions. We believe the proposed research provides insights and implications for the design of the strategies to promote effective IS practice.
Enhancing Productivity and Resource Conservation by Eliminating Inefficiency of Thai Rice Farmers: A Zero Inefficiency Stochastic Frontier Approach
Authors: Liu Jianxu , Rahman Sanzidur , Sriboonchitta Songsak , Wiboonpongse Aree
Published: May 2017

The study first identified fully efficient farmers and then estimated technical efficiency of inefficient farmers, identifying their determinants by applying a Zero Inefficiency Stochastic Frontier Model (ZISFM) on a sample of 300 rice farmers from central-northern Thailand. Next, the study developed scenarios of potential production increase and resource conservation if technical inefficiency was eliminated. Results revealed that 13% of the sampled farmers were fully efficient, thereby justifying the use of our approach. The estimated mean technical efficiency was 91%, implying that rice production can be increased by 9%, by reallocating resources. Land and labor were the major productivity drivers. Education significantly improved technical efficiency. Farmers who transplanted seedlings were relatively technically efficient as compared to those who practised manual and/or mechanical direct seeding methods. Elimination of technical inefficiency could increase output by 8.64% per ha, or generate 5.7–6.4 million tons of additional rice output for Thailand each year. Similarly, elimination of technical inefficiency would potentially conserve 19.44% person-days of labor, 11.95% land area, 11.46% material inputs and 8.67% mechanical power services for every ton of rice produced. This translates into conservation of 2.9–3.0 million person-days of labor, 3.7–4.5 thousand km2 of land, 10.0–14.5 billion baht of material input and 7.6–12.8 billion baht of mechanical power costs to produce current level of rice output in Thailand each year. Policy implications include investment into educating farmers, and improving technical knowledge of seeding technology, to boost rice production and conserve scarce resources in Thailand.
The Spatial Differentiation of the Suitability of Ice-Snow Tourist Destinations Based on a Comprehensive Evaluation Model in China
Authors: Yang Jun , Yang Ruimeng , Sun Jing , Huang Tai , Ge Quansheng
Published: May 2017

Ice, snow, and rime are wonders of the cold season in an alpine climate zone and climate landscape. With its pure, spectacular, and magical features, these regions attract numerous tourists. Ice and snow landscapes can provide not only visually-stimulating experiences for people, but also opportunities for outdoor play and movement. In China, ice and snow tourism is a new type of recreation; however, the establishment of snow and ice in relation to the suitability of the surrounding has not been clearly expressed. Based on multi-source data, such as tourism, weather, and traffic data, this paper employs the Delphi-analytic hierarchy process (AHP) evaluation method and a spatial analysis method to study the spatial differences of snow and ice tourism suitability in China. China’s ice and snow tourism is located in the latitude from 35°N to 53.33°N and latitude 41.5°N to 45°N and longitude 82°E to 90°E, with the main focus on latitude and terrain factors. A poor fit is concentrated at latitude 20.45°N to 35°N and longitude 100°E to 122°E; the difference is that the latitude is low and affected by the Japanese warm current. The analysis of the suitability of ice and snow tourism can be employed as a reference for the development of ice and snow tourism.
Climate Variability and Industrial-Suburban Heat Environment in a Mediterranean Area
Authors: Giorgio Giuseppina , Ragosta Maria , Telesca Vito
Published: May 2017

The Urban Heat Island (UHI) phenomenon prevalently concerns industrialized countries. It consists of a significant increase in temperatures, especially in industrialized and urbanized areas, in particular, during extreme warm periods like summer. This paper explores the climate variability of temperatures in two stations located in Matera city (Southern Italy), evaluating the increase in temperatures from 1988 to 2015. Moreover, the Corine Land Covers (1990–2000–2006–2012) were used in order to investigate the effect of land use on temperatures. The results obtained confirm the prevalence of UHI phenomena for industrialized areas, highlighting the proposal that the spreading of settlements may further drive these effects on the microclimate. In particular, the presence of industrial structures, even in rural areas, shows a clear increase in summer maximum temperatures. This does not occur in the period before 2000, probably due to the absence of the industrial settlement. On the contrary, from 2000 to 2015, changes are not relevant, but the maximum temperatures have always been higher than in the suburban area (station localized in green zone) during daylight hours.
A Lagrangian Relaxation-Based Solution Method for a Green Vehicle Routing Problem to Minimize Greenhouse Gas Emissions
Authors: Zhou Yanjie , Lee Gyu
Published: May 2017

The effects of greenhouse gas (GHG) on the weather has caused ever-increasing disasters around the world. Many countries are making significant efforts to reduce GHG emissions in all industrial sectors. In this study, a green vehicle routing problem (GVRP) has been formulated as a nonlinear integer programming problem to minimize GHG emissions, considering various realistic factors that include three-dimensional customer locations, gravity, vehicle speed, vehicle operating time, vehicle capacity, rolling resistance, air density, road grade and inertia. Lagrangian relaxation has been introduced to propose a simple solution method. In contrast to traditional vehicle routing problems, the vehicle speed, vehicle weight, and road grade between two customer locations are also determined along with vehicle routes. The computational results demonstrate the effectiveness and efficiency of the proposed solution method.
Quantum Tunneling Radiation from Loop Quantum Black Holes and the Information Loss Paradox
Authors: Silva C. , Brito Francisco
Published: May 2017

In this work, we present some results relating to the issue of the Loop Quantum Black Holes (LQBH) thermodynamics by the use of the tunneling radiation formalism. The information loss paradox is also discussed in this context, and we have considered the influence of back reaction effects.
Mirror QCD and Cosmological Constant
Authors: Pasechnik Roman , Prokhorov George , Teryaev Oleg
Published: May 2017

An analog of Quantum Chromo Dynamics (QCD) sector known as mirror QCD (mQCD) can affect the cosmological evolution due to a non-trivial contribution to the Cosmological Constant analogous to that induced by the ground state in non-perturbative QCD. In this work, we explore a plausible hypothesis for trace anomalies cancellation between the usual QCD and mQCD. Such an anomaly cancellation between the two gauge theories, if it exists in Nature, would lead to a suppression or even elimination of their contributions to the Cosmological Constant. The trace anomaly compensation condition and the form of the non-perturbative mQCD coupling constant in the infrared limit have been proposed by analysing a partial non-perturbative solution of the Einstein–Yang-Mills equations of motion.
If not When, then Where? Ignoring Temporal Information Eliminates Reflexive but not Volitional Spatial Orienting
Authors: Laidlaw Kaitlin , Kingstone Alan
Published: May 2017

A tremendous amount of research has been devoted to understanding how attention can be committed to space or time. Until recently, relatively little research has examined how attention to these two domains combine. The present study addressed this issue. We examined how implicitly manipulating whether participants used a cue to orient attention in time impacts reflexive or volitional shifts in spatial attention. Specifically, participants made speeded manual responses to the detection of a peripherally presented target that appeared either 100, 500, or 1000 ms after the onset of a central cue. Cues were either spatially non-predictive arrows (p = 0.50) or spatially-predictive (p = 0.80) letter cues. Whereas arrow cues can reflexively orient spatial attention even when non-predictive of a target’s spatial location, letters only orient spatial attention when they reliably predict a target location, i.e., the shift is volitional. Further, in one task, a target was presented on every trial, thereby encouraging participants to use the temporal information conveyed by the cue to prepare for the appearance of the target. In another task, 25% of trials contained no target, implicitly discouraging participants from using the cue to direct attention in time. Results indicate that when temporal information is reliable and therefore volitionally processed, then spatial cuing effects emerge regardless of whether attention is oriented reflexively or volitionally. However, when temporal information is unreliable, spatial cuing effects only emerge when spatial cue information is reliable, i.e., when spatial attention is volitionally shifted. Reflexive cues do not elicit spatial orienting when their temporal utility is reduced. These results converge on the notion that reflexive shifts of spatial attention are sensitive to implicit changes in a non-spatial domain, whereas explicit volitional shifts in spatial attention are not.
Identification of Waters Incorporated in Laguna Lake, Republic of the Philippines, Based on Oxygen and Hydrogen Isotopic Ratios
Authors: Maruyama Seiji , Kato Hisaaki
Published: May 2017

We examined the oxygen and hydrogen isotopic ratios of surface waters and groundwaters in the catchment of Laguna Lake, Republic of the Philippines, to identify the types of water that combine and control these ratios in the lake water. The oxygen and hydrogen isotopic ratios of water samples collected from rivers, lakes, springs, and irrigation canals were determined using cavity ring-down spectroscopy. The lake water data deviated from the meteoric line of the Philippines by between −13.5‰ and −10‰, and between −11.5‰ and −1.5‰ in the dry and wet seasons, respectively. The values for the groundwaters and surface waters were mainly between −8‰ and 3‰ throughout the year. In addition to rainwater, evaporative concentration, which may have an almost constant effect throughout the year, was the main control on the oxygen and hydrogen isotopic properties of Laguna Lake. The contributions of the surface waters and groundwaters to the oxygen and hydrogen isotopic ratios of the lake were relatively constant. Based on their isotopic properties, the waters within the water catchment area of Laguna Lake can be roughly divided into lake water with heavier isotopic ratios, and groundwater and surface water with lighter isotopic ratios.
Uncertainty of Hydrological Drought Characteristics with Copula Functions and Probability Distributions: A Case Study of Weihe River, China
Authors: Zhao Panpan , Lü Haishen , Fu Guobin , Zhu Yonghua , Su Jianbin , Wang Jianqun
Published: May 2017

This study investigates the sensitivity and uncertainty of hydrological droughts frequencies and severity in the Weihe Basin, China during 1960–2012, by using six commonly used univariate probability distributions and three Archimedean copulas to fit the marginal and joint distributions of drought characteristics. The Anderson-Darling method is used for testing the goodness-of-fit of the univariate model, and the Akaike information criterion (AIC) is applied to select the best distribution and copula functions. The results demonstrate that there is a very strong correlation between drought duration and drought severity in three stations. The drought return period varies depending on the selected marginal distributions and copula functions and, with an increase of the return period, the differences become larger. In addition, the estimated return periods (both co-occurrence and joint) from the best-fitted copulas are the closet to those from empirical distribution. Therefore, it is critical to select the appropriate marginal distribution and copula function to model the hydrological drought frequency and severity. The results of this study can not only help drought investigation to select a suitable probability distribution and copulas function, but are also useful for regional water resource management. However, a few limitations remain in this study, such as the assumption of stationary of runoff series.
Development and evaluation of microsatellite markers for the critically endangered birch Betula chichibuensis (Betulaceae)
Authors: Igarashi Yuji , Aihara Hiroki , Handa Yoshihiro , Katsumata Hiroshi , Fujii Masanori , Nakano Koichiro , Hirao Toshihide
Published: May 2017

Premise of the study:

Microsatellite markers were developed and characterized for the critically endangered birch Betula chichibuensis (Betulaceae) to investigate the genetic structure of this species for conservation purposes.

Methods and Results:

Sixteen microsatellite markers with di‐, tri‐, and tetranucleotide repeat motifs were developed and optimized using MiSeq paired‐end sequencing. Of these, 14 were polymorphic, with two to five alleles per locus, in 47 individuals from two newly discovered populations of B. chichibuensis in Japan. Observed and unbiased expected heterozygosities per locus ranged from 0.000 to 0.617 and from 0.000 to 0.629, respectively. These markers were tested for cross‐species amplification in B. maximowicziana, B. platyphylla var. japonica, and B. schmidtii.

Conclusions:

This set of microsatellite markers, the first developed for B. chichibuensis, will help elucidate spatial patterns of gene flow and levels of inbreeding in this species to aid its conservation.
CVD transfer-free graphene for sensing applications
Authors: Schiattarella Chiara , Vollebregt Sten , Polichetti Tiziana , Alfano Brigida , Massera Ettore , Miglietta Maria Lucia , Di Francia Girolamo , Sarro Pasqualina Maria
Published: May 2017

The sp2 carbon-based allotropes have been extensively exploited for the realization of gas sensors in the recent years because of their high conductivity and large specific surface area. A study on graphene that was synthetized by means of a novel transfer-free fabrication approach and is employed as sensing material is herein presented. Multilayer graphene was deposited by chemical vapour deposition (CVD) mediated by CMOS-compatible Mo. The utilized technique takes advantage of the absence of damage or contamination of the synthesized graphene, because there is no need for the transfer onto a substrate. Moreover, a proper pre-patterning of the Mo catalyst allows one to obtain graphene films with different shapes and dimensions. The sensing properties of the material have been investigated by exposing the devices to NO2, NH3 and CO, which have been selected because they are well-known hazardous substances. The concentration ranges have been chosen according to the conventional monitoring of these gases. The measurements have been carried out in humid N2 environment, setting the flow rate at 500 sccm, the temperature at 25 °C and the relative humidity (RH) at 50%. An increase of the conductance response has been recorded upon exposure towards NO2, whereas a decrease of the signal has been detected towards NH3. The material appears totally insensitive towards CO. Finally, the sensing selectivity has been proven by evaluating and comparing the degree of adsorption and the interaction energies for NO2 and NH3 on graphene. The direct-growth approach for the synthesis of graphene opens a promising path towards diverse applicative scenarios, including the straightforward integration in electronic devices.
Opportunities and challenges for the sustainable production of structurally complex diterpenoids in recombinant microbial systems
Authors: Kemper Katarina , Hirte Max , Reinbold Markus , Fuchs Monika , Brück Thomas
Published: May 2017

With over 50.000 identified compounds terpenes are the largest and most structurally diverse group of natural products. They are ubiquitous in bacteria, plants, animals and fungi, conducting several biological functions such as cell wall components or defense mechanisms. Industrial applications entail among others pharmaceuticals, food additives, vitamins, fragrances, fuels and fuel additives. Central building blocks of all terpenes are the isoprenoid compounds isopentenyl diphosphate and dimethylallyl diphosphate. Bacteria like Escherichia coli harbor a native metabolic pathway for these isoprenoids that is quite amenable for genetic engineering. Together with recombinant terpene biosynthesis modules, they are very suitable hosts for heterologous production of high value terpenes. Yet, in contrast to the number of extracted and characterized terpenes, little is known about the specific biosynthetic enzymes that are involved especially in the formation of highly functionalized compounds. Novel approaches discussed in this review include metabolic engineering as well as site-directed mutagenesis to expand the natural terpene landscape. Focusing mainly on the validation of successful integration of engineered biosynthetic pathways into optimized terpene producing Escherichia coli, this review shall give an insight in recent progresses regarding manipulation of mostly diterpene synthases.
DESIGNING A MULTI-PRODUCT MULTI-PERIOD SUPPLY CHAIN NETWORK WITH REVERSE LOGISTICS AND MULTIPLE OBJECTIVES UNDER UNCERTAINTY
Authors: KESHAVARZ GHORABAEE Mehdi , AMIRI Maghsoud , OLFAT Laya , KHATAMI FIROUZABADI S. M. Ali
Published: May 2017

Integration of reverse logistics processes into supply chain network design can help to achieve a network that incorporates environmental factors as well as economic factors. In this study, a new integrated approach is proposed to address designing a multi-product, multi-period supply chain network with reverse logistics. The framework of the proposed approach includes green supplier evaluation and a mathematical model in an uncertain environment. To the best of our knowledge, integration of green supplier evaluation into the designing supply chain network with reverse logistics has not been considered in the literature. This integration can help to incorporate experts’ opinions about environmental impact of suppliers in the network design. Minimization of total cost and maximization of total greenness score of purchased raw materials/components are two objectives of the model. The fuzzy EDAS method is used to determine the greenness scores of suppliers. Also, demand of customers and capacity of suppliers are defined using fuzzy numbers and a fuzzy method is used to obtain trade-off solutions. The proposed approach is applied to designing the supply chain network of a home appliance company. The results show that the proposed approach is feasible and efficient to obtain solutions to design the supply chain network.
A Librational Model for the Propeller Blériot in the Saturnian Ring System
Authors: Seiler M. , Sremčević M. , Seiß M. , Hoffmann H. , Spahn F.
Published: May 2017

The reconstruction of the orbital evolution of the propeller structure Blériot orbiting in Saturn’s A ring from recurrent observations in Cassini ISS images yielded a considerable offset motion from the expected Keplerian orbit. This offset motion can be composed by three sinusoidal harmonics with amplitudes and periods of 1845, 152, 58 km and 11.1, 3.7, and 2.2 years, respectively. In this paper we present results from N-body simulations, where we integrated the orbital evolution of a moonlet, which is placed at the radial position of Blériot under the gravitational action of the Saturnian satellites. Our simulations yield that, especially the gravitational interactions with Prometheus, Pandora, and Mimas are forcing the moonlet to librate with the right frequencies, but the libration amplitudes are too small to explain the observations. Thus, further mechanisms are needed to explain the amplitudes of the forced librations—e.g., moonlet–ring interactions. Here, we develop a model, where the moonlet is allowed to be slightly displaced with respect to its created gaps breaking the point symmetry and causing a repulsive force in this way. As a result, the evolution of the moonlet’s longitude can be described by a harmonic oscillator. In the presence of external forcing by the outer moons, the libration amplitudes get the more amplified the closer the forcing frequency is to the eigenfrequency of the disturbed propeller oscillator. Applying our model to Blériot, it is possible to reproduce a libration period of 13 years with an amplitude of about 2000 km.
Letramento midiático de professores e tutores da Universidade Aberta do Brasil: o caso da Universidade Federal de Santa Catarina
Authors: Cruz Dulce Marcia
Published: May 2017

Esta pesquisa investigou a mediação pedagógica e o letramento midiático na formação para a docência na educação a distância. Na Universidade Aberta do Brasil (UAB), o papel dos professores e tutores tem sido objeto de acirrada discussão: a divisão de tarefas, a produção de materiais didáticos e o acompanhamento e avaliação da aprendizagem através de diversas mídias exige novos processos de trabalho e oferta de formação continuada por parte da instituição. Para investigar como isso vem se dando nos cursos de licenciatura a distância da UAB foi feito um estudo de caso na Universidade Federal de Santa Catarina. A abordagem qualitativa em uma pesquisa longitudinal teve como principais instrumentos de coleta, a análise de documentos, entrevistas e aplicação de questionários a professores e tutores durante três anos. Os resultados mostraram que a formação dos professores se deu em eventos sem periodicidade, de pouca especificidade sobre a rotina da educação a distância enquanto a preparação para a mediação pedagógica aconteceu principalmente na produção do material impresso. Os tutores por seu lado receberam uma formação regular, semestral, burocrática baseada em questões técnicas e rudimentos de aspectos comunicacionais, sem considerar sua experiência, a atuação na aprendizagem dos alunos nos ambientes virtuais, minimizando sua participação na autoria dos cursos online. Nessas condições, a formação não acompanhou as necessidades dos professores e dos tutores no que se refere à mediação pedagógica e não ampliou seu letramento midiático para utilizar as mídias digitais, fortalecendo a fragmentação e enfraquecendo a função docente na EaD.
A formação de professores como objeto de estudo de dissertações produzidas em um mestrado em educação
Authors: Larocca Priscila , Tozetto Susana Soares
Published: May 2017

O texto apresenta pesquisa meta-analítica que objetivou descrever e analisar objetos de estudo encontrados em 54 dissertações de um Mestrado em Educação, produzidas entre 1996 a 2013, sobre formação de professores, em uma universidade pública. Os objetos de estudo foram extraídos das problematizações delimitadas em cada dissertação, os quais foram transcritos e agrupados numa tabela auxiliar e submetidos à técnica da análise de conteúdo. A partir da análise, foi possível compor 7 categorias de objetos de estudo: Formação Continuada; Currículo da Formação Inicial; Formação Inicial; Formação e Práticas Pedagógicas; Concepções, Representações Sociais e Ação Docente; Constituição, Identidade e Subjetividade de professores: História da Formação de Professores. Da análise também emergiram características referentes aos objetos de estudo das dissertações que são discutidas e questionadas: endogenia, pragmatismo, imediatismo, desprezo pela teoria, heterogeneidade e descontinuidade dos objetos de estudo. Para melhor impactar sobre políticas e práticas educacionais, conclui-se pela necessidade de superar tais aspectos, articulando e proporcionando fluxo contínuo às pesquisas e compreendendo que a formação de grupos de pesquisa nos programas de pós-graduação bem como iniciativas interinstitucionais de articulação dessas pesquisas representam um passo importante e imprescindível para atender a este propósito.
A trajetória de construção do princípio da gestão democrática na legislação educacional brasileira
Authors: Drabach Neila Pedrotti
Published: May 2017

Este artigo busca analisar o processo histórico de construção do princípio da gestão democrática do ensino público na legislação educacional vigente e os diferentes significados que disputam este campo, a par da trajetória da democracia e das características do Estado Brasileiro. Neste percurso evidencia-se de que forma os acontecimentos políticos e econômicos da década de 1990 ressignificam a proposta de gestão democrática, ou seja, quais os princípios e fundamentos da gestão educacional e escolar assumem novos significados, resultando em um desencontro entre o que a sociedade civil reivindicava na década de 1980 e o que de fato se materializou na política educacional da década de 1990. A trajetória histórica ensejada neste artigo cumpre, acima de tudo, o objetivo de evidenciar o processo de construção dos preceitos legais que orientam as políticas públicas no campo educacional. Este percurso permite observar que a construção da legislação educacional não se restringe a formalismos e aparatos normativos, mas é, sobretudo em uma sociedade de classes, resultado de uma luta histórica regada por interesses e práticas contraditórias.
Limites e possibilidades da atuação de mentores nos processos de inserção profissional docente
Authors: Mira Marilia Marques , Romanowski Joana Paulin
Published: May 2017

Este artigo objetiva analisar as possíveis contribuições de mentores nos processos de inserção docente, na perspectiva do desenvolvimento profissional dos professores iniciantes. Considera como questões: Que concepção de mentoria está presente nos programas de inserção docente existentes na realidade brasileira? Quais os limites e possibilidades de atuação dos mentores nos processos de inserção docente? A investigação é do tipo estudos de revisão sistemática para compor o estado da arte, tomando por base as indicações de Ferreira (2002), Romanowski e Ens (2006), Vosgerau e Romanowski (2014) com foco na análise de conteúdo (Bardin, 1995). O levantamento de dados foi feito no banco da CAPES, no período de 2004 a 2014, com uso dos descritores inserção profissional de professores, professores principiantes e mentoria. Os aportes teóricos tomam por referência as contribuições de Marcelo (1999; 2009; 2010); Gatti (2012), Day (2001), Reali, Tancredi e Mizukami (2008), Cornejo (2009), entre outros. Os resultados revelam a existência de poucos programas direcionados ao desenvolvimento profissional do professor iniciante no Brasil, e destes programas apenas dois contaram com acompanhamento de mentores. Nestes dois programas destaca-se que a mentoria se caracteriza pelo apoio de um docente mais experiente e com formação específica para a função; esse acompanhamento trouxe contribuições para a aprendizagem e desenvolvimento profissional dos iniciantes; os principais limites se relacionam ao pouco envolvimento das equipes escolares no processo de inserção docente e à descontinuidade dos programas. Finalmente, verifica-se que não ocorreu ainda a definição de políticas para o apoio aos iniciantes no contexto brasileiro.
Marcadores de formação para a Universidade de hoje e do próximo decénio: primeiros passos de um projeto de pesquisa
Authors: Tavares José Pereira Costa , Oliveira José Bessa , Alarcão Isabel
Published: May 2017

Neste artigo apresenta-se a pequena história de um projeto, ainda no seu início, mas em que o caminho do seu desenvolvimento fica traçado. As ideias que lhe serviram de suporte levaram à identificação de marcadores relativos à formação, inovação e pesquisa avaliados por entrevista e questionário, na fase de diagnóstico. Além de possibilitarem informações sobre a Universidade de hoje e do próximo decénio, permitiram perspectivar a fase de intervenção e tirar algumas notas para trabalhos e atividades posteriores. Destacamos a elaboração de cenários prospectivos sobre a Universidade do futuro e designadamente, a Universidade dos próximos 20 anos, em que os radares de contrastes dos diferentes marcadores na formação, na inovação e na pesquisa nos possibilitarão a configuração de diferentes cenários. Estes cenários serão refletidos em grupos com a participação de um número determinado de professores, investigadores, bolsistas, estudantes e pesquisadores do projeto-marcadores com uma metodologia própria e original, em sessões, com uma dinâmica específica e materiais adequados e gravação em áudio e vídeo. Os dados daí decorrentes, após análise e estudo, poderão dar matéria para outros artigos e outras atividades a realizar. Estas sessões poderão ser realizadas em diferentes universidades com as devidas adaptações mas sem alterar o seu formato.
A produção dos diplomas normativos e a gestão da educação municipal: “a voz” dos sujeitos formuladores das políticas
Authors: Oliveira Oséias Santos de
Published: May 2017

Este estudo tem como propósito analisar os processos de produção dos Diplomas Normativos que organizam a educação pública no âmbito do Sistema Municipal de Ensino de Santa Rosa/RS (SME/SR) levando-se em consideração os pressupostos participativos e democráticos inseridos nos discursos legais e teóricos e também as intenções advindas da sociedade políticas e as aspirações manifestas pela sociedade civil organizada. A opção metodológica pelo Ciclo de Políticas, enquanto referencial teórico para o processo de análise das políticas educacionais, se pauta em estudos de Ball e Bowe (1992; 1994), quando o Contexto da Produção de Textos é foco de análise e os diferentes sujeitos formuladores das políticas municipais, como gestores municipais (prefeitos), gestores municipais educacionais (secretários de educação) e conselheiros municipais de educação são convidados a expressar seus entendimentos sobre a organização da educação local. As intenções e ações executadas, bem como as trajetórias e os interesses dos envolvidos nos cenários de Criação, Implantação e Consolidação do SME/SR – no período compreendido entre 1999, ano de criação do Sistema e 2010, ano em que é produzida a lei da gestão democrática municipal –, nem sempre estiveram afinados. Contudo, ainda que dilemas decorrentes de contradições ou aproximações quanto as relações entre os distintos sujeitos da educação municipal pudessem se fazer sentir o escopo de concretizar um sistema de ensino próprio foi alcançado. Assim, concorrem para o alcance desta política educacional ações como: produção de documentos, debates entre os órgãos instituidores, acompanhamento permanente dos projetos executados, controle social sobre ações governamentais e a abertura de espaços participativos com o maior envolvimento da sociedade civil sobre o processo de pensar o projeto educacional.
Editorial
Authors: Oliveira Oséias Santos de
Published: May 2017

Editorial
Psychiatric Management of Huntington's Disease
Authors: Nance Martha A.
Published: May 2017

This article reviews the common psychiatric manifestations and treatments for Huntington's disease. Although there is a lack of published data supporting the use of treatments specifically in HD, expert opinion guidelines have been developed for the management of obsessive-compulsive symptoms and aggression/irritability. Furthermore, the lack of published descriptions of adverse effects in patients with HD, caused by the use of treatments commonly used for similar symptoms in patients without HD, suggests that clinicians may cautiously use standard treatments for HD symptoms.

[
Psychiatr Ann
. 2017;47(5):263–267.]
White Light Generation from Electroluminescence Devices Using TPD:PMMA/QDs/Alq3
Authors: Ibrahim Omar A. , Kadim Akeel M. , Saleh Wasan R.
Published: May 2017

Quantum dots of CdSe, CdS and ZnS QDs were prepared by chemical reaction and used to fabricate organic quantum dot hybrid junction device. QD-LEDs were fabricated using layers of ITO/TPD: PMMA/CdSe/Alq3, ITO/TPD: PMMA/CdS/Alq3 and ITO/TPD: PMMA/ZnS/Alq3 devices which prepared by phase segregation method. The hybrid white light emitting devices consists, of three-layers deposited successively on the ITO glass substrate; the first layer was of N, N’-bis (3-methylphenyl)-N, N’-bis (phenyl) benzidine (TPD) polymer mixed with polymethyl methacrylate (PMMA) polymers. The second layer was QDs while the third layer was tris (8-hydroxyquinoline) aluminium (Alq3). The results of the optical properties show that the prepared QDs were nanocrystalline with defects formation. The calculated of energy gaps from photoluminescence (PL) spectrometer were 2.38, 2.69 and 3.64 eV for CdSe, CdS and ZnS respectively. The generated white light has acceptable efficiency using confinement effect which makes the energy gap larger, so that the direction of the light sites are toward the center of white light color. The hybrid junction devices (EL devices) were characterized by room temperature PL and electroluminescence (EL). Current-voltage (I–V) characteristics indicate that the output current is good compared to the few voltages ( 8-10.3 V) used which gives acceptable results to get a generation of white light. The EL spectrum reveals a broad emission band covering the range from 350 - 700 nm. The emissions causing this white luminescence were identified depending on the chromaticity coordinates (CIE 1931). The correlated color temperature (CCT) was found to be about 6250, 5310 and 5227K respectively. Fabrication of EL-devices from semiconductors material (CdSe, CdS and ZnS QDs) with hole injection organic polymer (TPD) and electron injection from organic molecules (Alq3) was effective in white light generation
Investigation of Microstructural and Hardness Properties of Al-Al2O3 Nano Surface Composite
Authors: Karthikeyan A. , Nallusamy S.
Published: May 2017

In present scenario, nanocomposites are playing an imperative role in most of the industrial application due to their outstanding performances with good mechanical properties. The aim of this research is to study the effect of tool rotational speed and traverse speed on micro structural and hardness properties of fabricated surface nanocomposites of Al-Al2O3. By varying tool rotational and traverse speed at a constant volume percentage the surface nanocomposites were produced by applying one pass of friction stir processing. A clear view of material flow and defect characterization in the stir zone were studied. Optimum condition of tool rotational speed of 1120 rpm and tool traverse speed of 16 mm/min was obtained to produce a defect free surface nanocomposite. Microstructure observations were carried out through optical microscope and micro hardness test were conducted by using Vickers micro hardness tester. From the phase volume fraction analysis, it was observed that the Al2O3 nanoparticles were well dispersed in the stir zone. It was found that, the tool speed and traverse speed had a significant impact on microstructure properties as well as mechanical properties of the fabricated surface nanocomposite. From the final results it was found that a mixture of dynamically restored ultra fine grins with a mean size of ~80 nm and the average micro hardness value of 130HV were achieved through a fabricated aluminium Al2O3 nanocomposite.
A Consensus Definitive Classification of Scavenger Receptors and Their Roles in Health and Disease
Authors: PrabhuDas Mercy R. , Baldwin Cynthia L. , Bollyky Paul L. , Bowdish Dawn M. E. , Drickamer Kurt , Febbraio Maria , Herz Joachim , Kobzik Lester , Krieger Monty , Loike John , McVicker Benita , Means Terry K. , Moestrup Soren K. , Post Steven R. , Sawamura Tatsuya , Silverstein Samuel , Speth Robert C. , Telfer Janice C. , Thiele Geoffrey M. , Wang Xiang-Yang , Wright Samuel D. , El Khoury Joseph
Published: May 2017

Scavenger receptors constitute a large family of proteins that are structurally diverse and participate in a wide range of biological functions. These receptors are expressed predominantly by myeloid cells and recognize a diverse variety of ligands including endogenous and modified host-derived molecules and microbial pathogens. There are currently eight classes of scavenger receptors, many of which have multiple names, leading to inconsistencies and confusion in the literature. To address this problem, a workshop was organized by the United States National Institute of Allergy and Infectious Diseases, National Institutes of Health, to help develop a clear definition of scavenger receptors and a standardized nomenclature based on that definition. Fifteen experts in the scavenger receptor field attended the workshop and, after extensive discussion, reached a consensus regarding the definition of scavenger receptors and a proposed scavenger receptor nomenclature. Scavenger receptors were defined as cell surface receptors that typically bind multiple ligands and promote the removal of nonself or altered-self targets. They often function by mechanisms that include endocytosis, phagocytosis, adhesion, and signaling that ultimately lead to the elimination of degraded or harmful substances. Based on this definition, nomenclature and classification of these receptors into 10 classes were proposed. This classification was discussed at three national meetings and input from participants at these meetings was requested. The following manuscript is a consensus statement that combines the recommendations of the initial workshop and incorporates the input received from the participants at the three national meetings.
El gender mainstreaming en la academia portuguesa
Authors: Sales Oliveira Catarina , Augusto Amélia
Published: May 2017

El debate sobre los límites y el valor añadido de la intervención en favor de la igualdad de género en las sociedades en general y en la ciencia en particular, presta especial atención a las políticas de gender mainstreaming. La universidad desempeña un papel clave en el mundo contemporáneo no solamente por ser lugar de profesionalización, estudio e investigación, sino por su función de promover la ciudadanía plena y el progreso social. En este artículo, buscamos discutir la implementación del gender mainstreaming en la academia portuguesa a partir de experiencias concretas de planes de igualdad de género desarrollados en universidades y politécnicos públicos. Considerando que el gender mainstreaming ha sido implementado de diversos modos y en distintos contextos, con base en distintos conceptualizaciones y enfoques así como con distintos recursos y niveles de compromiso, es fundamental fomentar la reflexión y el análisis crítico que nos permita identificar fracasos y errores, conquistas y beneficios, pero también amenazas y desafíos que son planteados en su desarrollo práctico, en particular al nivel de las instituciones de educación superior por su especificidad.
Solidaridad y humanismo: principios constitucionales para el anclaje de la igualdad
Authors: Uribe Arzate Enrique
Published: May 2017

La doctrina constitucional afirma la conveniencia de que los derechos fundamentales formen parte del texto de la ley suprema. De este modo, existe un catálogo mínimo de derechos que la Constitución recoge y aspira a garantizar. Sin embargo, cuando la Constitución carece de la directriz del humanismo y la solidaridad, es previsible su ineficacia en la protección y aseguramiento de los derechos humanos, concretamente de la igualdad y la libertad.
La construcción colaborativa institucional de la igualdad de género en Europa
Authors: Bartolomé Cenzano José Carlos de
Published: May 2017

La construcción en Europa de la igualdad de hombres y mujeres desde el punto de vista sustantiva o real es una nueva igualdad material que se impulsa desde la ONU, el Consejo de Europa y la Unión Europea. Se analiza el camino paralelo que ha guiado la integración europea y el reconocimiento de la igualdad material mediante políticas públicas globales y transversales. Se revisa la labor interinstitucional y el permanente diálogo entre todas las instituciones del mundo y Europa.
Florencia desde el Forte Belvedere
Authors: Báez Mezquita Juan Manuel
Published: May 2017

Lámina a doble página.

1992

36,5x135 cm.

Lápiz de grafito 2H sobre papel Caballo
Discos, arte y racismo: introducción la gráfica reivindicativa del free jazz de los años setenta
Authors: Torán Tortajada Claudia
Published: May 2017

Este artículo trata de una investigación preliminar que propone un viaje por el racismo y el arte en el marco histórico del free jazz neoyorquino de los años setenta, cuyo análisis nos acercará al entendimiento de sus características definitorias y sus propósitos activistas, a través de las cubiertas de discos. Tras una breve introducción histórica, donde se trata el tema del racismo y la música jazz, la autora centra su objeto de estudio en una selección de cubiertas de discos y artistas plásticos, a través de los cuales comienza un análisis de la gráfica e iconografía que fue definiendo la industria musical del momento. Música y plástica como premisas para un acercamiento a la problemática racial que afectó a creativos cuya obra iría evolucionando en un marco sociocultural de segregación y manifestación por el cambio; experimentando y liberando sus procesos artísticos a favor del compromiso social.