bluuebunny/crossref_metadata_2025 huggingface dataset:
Особенности импульсного лазерного отжига пленок ВС-=SUB=-3-=/SUB=- на сапфировой подложке
Authors: Фоминский В.Ю. , Романов Р.И. , Соловьев A.A. , Васильевский И.С. , Сафонов Д.А. , Иванов А.А. , Зинин П.В. , Филоненко В.П.
Published: April 2019

The morphology, chemical composition, microstructure and electrical properties of BC3 thin films subjected to melting by a nanosecond laser pulse were investigated. The original films were formed by pulsed laser co-deposition of B and C on a sapphire substrate at 150 and 350 °C. Morphological changes in the films depended on their initial structure. However, the structure “frozen” after irradiation in both films was attributed to the B-saturated graphite-like phase, the local composition of which varied due to the formation of inclusions of amorphous boron carbide. Before and after irradiation, the films showed a weakly decreasing dependence of the sheet resistance with increasing temperature from 4.2 to 330 K. After pulsed laser irradiation, the sheet resistance of the films decreased by ~ 2.6 times.
Генерация фотоакустического сигнала двухслойными прозрачными образцами с поглощающей подложкой
Authors: Салихов Т.Х. , Меликхуджа Н. , Махмалатиф А.
Published: April 2019

AbstractA theory of generation of a photoacoustic signal in a two-layer transparent sample on an absorbing substrate to a buffer gas of a photoacoustic cell has been developed. We have shown that the frequency dependence of the photoacoustic signal amplitude excited in the absorbing substrate obeys the law ∝ ω^–1, when a free path of photons is less than the thermal diffusion length, and is proportional to ω^–3/2 in the opposite case.
Термомеханический анализ эффекта памяти формы полиуретанового композита, используемого для создания развертываемых конструкций космического назначения
Authors: Шалыгина Т.А. , Воронина С.Ю. , Власов А.Ю. , Пасечник К.А. , Обверткин И.В.
Published: April 2019

The possibility of using a three-point bending clamp thermomechanical analyzer for study the shape memory effect of a constructional polyurethane composite is investigated. The viscoelastic properties of the sample in the region of the transition from the glassy to the highly elastic state are studied. The parameters affecting the recovery rate of the original form (Rr) and the fixation factor of the temporary form (Rf) are determined. The conditions for deforming and cooling the polyurethane composite are established, which allow to achieve the values of Rr = 99.98% and Rf = 99.70%.
Модель поверхностного димера в задаче об адсорбции
Authors: Давыдов С.Ю. , Зубов А.В. , Лебедев А.А.
Published: April 2019

Abstract —The adsorption system has been represented in a form of two regions: a dimer, which includes the ad particle and substrate surface atom, and the rest of the space. Metal, semiconductor, and graphene (semimetal) have been considered as a substrate. The similarities and differences in the values of the ad particle occupation numbers that have been obtained in the framework of the proposed and standard adsorption models have been discussed.
Кластеры Mn в нанопористом углероде: магнитные свойства
Authors: Данишевский А.М. , Шаренкова Н.В. , Шанина Б.Д. , Гордеев С.К.
Published: April 2019

The method of Mn incorporation into nanoporous carbon is presented in the paper and magnetic properties of the composite samples are studied in the time development process.
Низкопороговая полевая электронная эмиссия из двумерных углеродных структур
Authors: Возняковский А.П. , Фурсей Г.Н. , Возняковский А.А. , Поляков М.А. , Неверовская А.Ю. , Закиров И.И.
Published: April 2019

Particles of multilayer graphene, obtained by the method of self-propagating high-temperature synthesis, are proposed as an active component of the cathode for field electron emission. It is shown that this material allows realizing a new technology for creating efficient field emitters with a developed surface. It has been established that the effect of low-threshold field electron emission is observed on this material. In pulsed electric fields, the possibility of obtaining high-current electron beams with currents up to hundreds of amperes has been confirmed.
Механолюминесценция тонкого слоя композиционного материала, созданного путем внедрения микрочастиц люминофора SrAl-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- : (Eu-=SUP=-2+-=/SUP=-, Dy-=SUP=-3+-=/SUP=-) в поверхностный слой полиметилметакрилата
Authors: Банишев А.Ф. , Банишев А.А.
Published: April 2019

AbstractA mechanoluminescent composite layer at the surface of poly(methyl methacrylate) (PMMA) was obtained by liquid-phase incorporation of SrAl_2O_4 : (Eu^2+, Dy^3+) phosphor microparticles into the polymer. The photoluminescence spectrum and kinetics of emission from the composite layer have been studied as dependent on the power density of exciting laser radiation pulses. The mechanoluminescence of the composite layer has been studied under the effect of short acoustic pulses and dynamic pressure of a solid stylus sliding over the composite layer surface. A possible mechanism of mechanoluminescence excitation is discussed. It is established that the obtained composite layer is characterized by high efficiency of the mechano-optical conversion and can be used for the detection and visualization of mechanical stresses.
Влияние разряда на температуру подложки при напылении пленки
Authors: Широков В.Б. , Зинченко С.П.
Published: April 2019

The heating of the substrate was studied during film synthesis by the method of cathode rf sputtering. The optical interferometric method was used to determine the substrate heating temperature when the discharge was switched on. The operating temperature of the substrate exceeds one thousand degrees Celsius when a film of barium strontium titanate is deposited on a substrate of magnesium oxide
Внутризонное поглощение излучения свободными дырками в квантовых ямах GaAs/InGaAs с учетом несферичности kP-гамильтониана
Authors: Павлов Н.В. , Зегря Г.Г.
Published: April 2019

The system of Kane equations is derived and solved with taking into account the elastic stresses and the nonsphericity of the kP Hamiltonian. Analytical expressions for the energy spectra of charge carriers are obtained. The radiation absorption coefficient by heavy holes with transition to the spin-split zone in GaAs/InGaAs quantum wells was calculated for different directions of polarization of the incident radiation. It was shown that for the GaAs/InGaAs heterostructure, the maximum absorption will be observed when the QW width is 4–6 nm.
Высокоселективный полосно-пропускающий фильтр на резонаторах с двухсторонним рисунком полосковых проводников на подвешенной подложке
Authors: Беляев Б.А. , Сержантов А.М. , Бальва Я.Ф. , Лексиков Ан.А. , Грушевский Е.О.
Published: April 2019

AbstractNew resonator design employing a hairpin stripline conductor with a stub situated on one side of a dielectric substrate and regular stripline conductors (connected to a screen) on the other side. Eigenfrequencies of the first three oscillation modes of this resonator can be made closer to each other, so that the resonances of two modes are involved in the formation of the passband while the third mode resonance forms a minimum of the transmission coefficient adjacent to the passband. A structure comprising four resonators of this type has the characteristic of an eighth-order bandpass filter arranged in a case with 45 × 16 × 6.25-mm internal dimensions possessing   f _0 = 0.52 GHz central frequency with a 14% relative bandwidth. The filter is highly selective due to the attenuation poles being close to the pass band and a wide high-frequency stopband extending above a fivefold   f _0  value at a level of  –100 dB.
Сканирующий оптический квантовый магнитометр, основанный на явлении выжигания провалов
Authors: Анисимов А.Н. , Бабунц Р.А. , Бреев И.Д. , Бундакова А.П. , Ильин И.В. , Музафарова М.В. , Баранов П.Г.
Published: April 2019

A scanning optical quantum magnetometer with submicron spatial resolution is proposed. It is based on the physical phenomenon of hole burning in an optically detected magnetic resonance (ODMR) signal. This signal has been registered on spin colour centers of atomic size in silicon carbide under conditions of a saturation of spin levels by additional high-frequency resonance pumping. The increase in sensitivity is due to the narrowing of the ODMR line and an increase in the slope of the dependence of the signal frequency on the magnetic field.
Теплообмен при смешанной конвекции расплава соли в присутствии магнитных полей
Authors: Беляев И.А. , Бирюков Д.А. , Котляр А.В. , Белавина Е.А. , Сардов П.А. , Свиридов В.Г.
Published: April 2019

The results of an experimental study of the salt melt downflow in a uniformly heated pipe under the influence of a strong transverse magnetic field are presented. The changes of heat transfer coefficients and statistical characteristics of temperature fluctuations under the influence of the magnetic field are investigated. The peculiarities of the transition of the viscous-gravitational flow in the viscous-inertial-gravitational flow at Reynolds numbers (Re=3000-5000) under the influence of the magnetic field (Ha=17) were studied.
Свечение металлов при их анодировании в дистиллированной воде
Authors: Овеченко Д.С. , Бойченко А.П.
Published: April 2019

AbstractStudy of the anodization of aluminum and tantalum at 1.2 kV in pure (distilled) water showed the possibility of generating electroluminescence (EL) in this system, which excluded the need for introducing any impurities into the initial aqueous medium and simplified interpretation of the observed results. It is established that the products of high-voltage anodization of metals in distilled water and the EL emission accompanying this process are similar to those observed during low-voltage anodization of metals in aqueous electrolyte solutions.
Влияние интерфейса на магнитное состояние в двухслойных пленках системы Fe-Bi
Authors: Патрин Г.С. , Яковчук В.Ю. , Яриков С.А. , Шиян Я.Г. , Фурдык В.П.
Published: April 2019

AbstractResults of the experimental investigation of two-layer films in the Fe–Bi system are presented. It is found that the order of sequential deposition of the magnetic and nonmagnetic layers influences both the character of magnetization process and the magnetic resonance behavior. The obtained results are explained by the formation of a strongly anisotropic sublayer of nanogranular iron in the Bi/Fe film structure.
Аномальная полевая десорбция цезия с квазисферической поверхности науглероженного кристалла рения
Authors: Бернацкий Д.П. , Павлов В.Г.
Published: April 2019

In the study of field desorption of cesium from rhenium carburized in benzene vapors, it was found that after desorption of cesium from the surface, desorption continues and a desorption contour is formed around the faces (1100), which shrinks to the centers of the faces as the field strength increases. The previously unobserved anomalous behavior of the field desorption is explained using cesium intercalation in graphite structures formed on the surface of the emitter.
Кинетика изменений спектров термодеструкции композита полибутилметакрилат-фуллерен C-=SUB=-60-=/SUB=- при ультрафиолетовом облучении
Authors: Поздняков А.О.
Published: April 2019

By using thermal decomposition mass-spectra the kinetics of ultraviolet induced transformation of polybutylmethacrylate has been described. The enhancement of decomposition at low temperatures occurs after low irradiation doses. Further growth of irradiation dose results in the decrease of the total amount of the monomer formed upon thermal decomposition. In the case of the polybutylmethacrylate-fullerene C60 composite the changes of the spectra are observed in the same range of irradiation doses, however, the spectral shapes and intensities exhibit different response to irradiation compared to neat polymer. The effect is interpreted to be a consequence of binding between fullerene molecule and the products of decomposition of the side ester groups of macromolecule.
Plasma Cortisol and Thyroid Hormone Profile in Theileria equi Affected Horses
Authors: Raval S.K. , Vidhyalakshmi T.M. , Sarvaiya N.P. , Patel S.M.
Published: April 2019

Equine theileriosis caused by Theileria equi is an endemic disease in most of the countries. The latently infected animals may exhibit low performance following physical, immunological or mental stress due to the flare-up of underlying
parasitemia leading to clinical form of the disease. In the present study, 72 horses were screened for T. equi by using polymerase chainm reaction based on equine merozoite antigen-5 and 6, which revealed 25 to be positive for theileriosis. Further
study was conducted to assess the cortisol and thyroid hormone (T3 and T4) levels in healthy (n=47) and in T. equi infected (n=25) horses. In horses positive for T. equi, there was significant increase (p less than 0.05) in cortisol (42.80±0.69 vs.
24.44± 0.12 ng/ml) and T4 level (47.56±4.06 vs. 38.14±2.40 ng/ml) with significant reduction (p less than 0.01) in T3 level (0.44±0.13 vs. 1.20±0.19 ng/ml) when compared to the healthy group. This may be the first report revealing that theileriosis
infected horses are under stress due to the involvement of endocrine system as well as metabolic pathways.
Epidemiological Study on Infectious Bursal Disease in Broilers
Authors: Macwan Terrance S. , Dave C.J. , Joshi B.P. , Ghodasara D.J.
Published: April 2019

The present study was carried out to know the epidemiology of Infectious bursal disease (IBD) in and around Anand district of Gujarat state. The study comprised of autopsy incidences of mortality from the retrospective data of the Department
of Veterinary Pathology, Anand and farm wise mortality data from 25 affected farms with IBD selected for detailed study, irrespective of their vaccination status. The retrospective year wise autopsy incidence of last five years (January 2013 to
December 2017) ranged between 1.42 and 8.38% with an overall average of 4.93%. The highest incidence was seen during the months of monsoon season (July-October; 57%, absolute mortality 8.28-10.72%) followed by summer (27%) and winter (16%), and also
in the age groups of 3rd and 4th week of age (39.46 and 37.57%). The flock wise mortality among 25 affected broiler flocks varied from 0.29 to 9.44 % with an average of 1.36% (1953/143400). It was also more in non-vaccinated than vaccinated
population (1.76 vs. 0.94%). Findings of the present work confirmed an increasing trend of IBD infections in the commercial broiler farms despite of vaccination.
Therapeutic Management of an Outbreak of Pasteurellosis in Sheep and Goats in Karnatka: A Case Report
Authors: Kavitha G. , Giridhara P. , Byregowda S.M.
Published: April 2019

Pasteurellosis caused by Pasteurella multocida is an acute septicaemic disease characterized by high morbidity and mortality in cattle, sheep, goat and poultry resulting in severe economic losses. Hemorrhagic septicaemia is endemic in most
parts of tropical Asia, Africa, and India and causes high mortality in livestock. Cattle and buffalo are the most common hosts, but pigs, sheep, goats, deer, and camels are also susceptible to infection and disease (Blackall et al., 2000).
Vaccination with undefined, killed vaccines is practiced in areas where the disease is endemic and has reduced the incidence of disease, but the duration of immunity is short and significant outbreaks still occur(Verma and Jaiswal, 1998) and it is
widely considered that buffaloes are the more susceptible. Although outbreaks of hemorrhagic septicaemia have been reported in sheep, goats and swine, it is not a frequent or significant disease. In India, the disease normally assumes endemic
character just before and during the monsoon season. Transmission occurs by the inhalation or ingestion of the infected material. The most common manifestation is pneumonic pasteurellosis which occurs in all ages. Other manifestations include
septicaemic pasteurellosis in very young lambs which often occurs in association with pneumonic pasteurellosis in the same flock, systemic pasteurellosis in weaned lambs (Radostits et al., 2000).
Nutritional Infertility and Ameliorative Measures in Dairy Animals of Middle Gujarat
Authors: Dhami A. J. , Patel J.A. , Hadiya K. K. , Parmar S. C. , Chaudhari D. V.
Published: April 2019

Fertility improvement camps were organized in different villages of middle Gujarat covering 1481 breedable cattle and buffaloes with the history of impaired fertility. The reproductive status of animals was ascertained through
gynaeco-clinical examination per rectum. Blood sampling (n=305) was done from representative groups of animals to know the nutritional status. All non-infectious infertile animals were dewormed using either Inj. Ivermectin 100 mg s/c or bolus
Fenbendazole + Ivermectin 3.0 g orally. Anestrus animals (n=265) were then nutritionally supplemented either with chelated area specific mineral mixture (ASMM, 50-60 g/d/h) or multi-minerals boli - one on alternate day, with and without bypass fat
(75-80 g/d/h) for one month along with an advice to improve feeding level, estrus detection and timely breeding. Revisits were made after 2.5-3.0 months to check the reproductive status. The mean blood glucose concentrations were significantly lower
(p less than 0.05), while total cholesterol and zinc levels were higher (p less than 0.05) in anestrus than in subestrus and/or repeat breeding cows and buffaloes. Moreover, the plasma total cholesterol levels in buffaloes were just one half to those
of cows. Further, the plasma total protein, calcium, phosphorus, magnesium, iron, copper and cobalt concentrations were found to be nonsignificantly higher in repeat breeders than in anestrus or subestrus cows and buffaloes. Calcium was deficient in
some 20% animals and calcium: phosphorus ratio varied from 1:1 to 1.8:1 in animals under different areas of study indicating its role in causing infertility in dairy animals. Supplementation of ASMM, multi-mineral boli alone or in combination with
bypass fat in pubertal /postpartum anestrus animals resulted in 34-56% estrus induction response and 33-50% conception rate, both being better with mineral plus bypass fat supplementation than minerals alone.
Prevalence of Fowl Adenovirus Infection in Broilers and Kadaknath Birds in Malwa Region of Madhya Pradesh
Authors: Shrivastava Nidhi , Chhabra Supriya , Chhabra Daljeet , Jatav G. P. , Mehta H.K
Published: April 2019

study was conducted to study the prevalence of Fowl adenovirus infections in broilers and Kadaknath birds in Malwa region of Madhya Pradesh during July 2016- March 2017. Overall 2.78% mortality was recorded at 30 broiler farms. Total
mortality recorded at Kadaknath farms was 6.84%. Age-wise highest mortality in broiler farms was recorded at 3rd week of age and highest mortality was recorded at 1st week and 3rd week of age respectively at Mhow and Jhabua kadaknath farms.
Disease-wise highest mortality in broilers was recorded due to IBH-HPS (1.6%) followed by colibacillosis. At Kadaknath farm Mhow and Jhabua maximum mortality was recorded due to yolksac infection (2.83%) and coccidiosis (1.90%) respectively.
Incidence and Molecular Characterization of Rotaviruses of Cattle and Buffalo Calves in Amravati Region, Maharashtra
Authors: Ade M.J. , Ingle V.C. , Tembhurne P.A. , Tumlam U.M. , Kadam A.S. , Bhojne G.R. , Sonkusale P. M.
Published: April 2019

Fecal samples of diarrheic and non diarrheic cattle calves (198) and buffalo calves (90) were collected during January 2018 to July 2018. Screening of fecal samples for the presence of rotavirus was carried out by commercially available rapid
Rota virus Ag detection kits. A total of 35 out of 288 (12.15%) fecal samples were found positive by latex agglutination test. Highest incidence (20.63%)m was found in Yavatmal district followed by Amravati (16.00%), Akola (13.33%), Buldana (6.77%)
and lowest (3.57%) in Washim. A higher incidence (14.50%) in cattle was observed as compared to buffalo ( 8.04%) calves of 0 to 6 months of age. Further higher incidence was noted in male and female both in cattle as compared to buffalo calves. 1 out
of 35 fecal samples (2.85%) of cattle calves was found positive for bovine group A rotavirus. The positive sample when amplified for VP4 gene by RT-PCR yielded an amplicon of 864 bp base pair indicating the sensitivity of PCR for detection of bovine
rota viruses.
Ultrashort peptides: minimum number in amino acid residues, maximum number in bioapplications.
Authors: Ni Ming
Published: April 2019

Ultra-short peptides are an intrigue new type of biomaterials for various bioapplications. Over the decades, peptides have evolved as biomaterials due to the ease of synthesis, ease of scaling up, feasibility to be functionalized/modified, and recognition by biological system1. Peptide-based hydrogels are widely used as scaffolds for encapsulation and delivery of drugs, genes and cells. They are made of natural amino acids. Thus they are non-immunogenic. They contain carboxylic and amine groups. Thus they can be easily functionalized with bioactive moieties. However, for peptides with more than 16 amino acid residues, they are expensive due to the high synthesis cost. As such, ultra-short peptides with only 2 to 7 amino acid residues stand out due to their easy and cost-effective synthesis, facile assembly in aqueous solution, biocompatibility and mechanical stability. These ultrashort peptides can form hydrogels without the addition of enzymes or other types of cross-linkers.
Response of Rapes (Brassica napus L.) to Nano- Iron Fertilization under semi-arid Region conditions
Authors: Mutlag Lamiaa A. , Meshaimsh Nagam A. , Mahdi Hasan H. , Mouhamad Raghad S. , Khamat Hasan H. , Jasaam Obeyed H. , Bajy Saham M.
Published: April 2019

The field experiment was conducted in the season of 2017-2018 at the Agricultural Research Department-AL-Azafrinih/Baghdad-Iraq. This study aimed to determine the effect of adding the Foliar Fe fertilization (Nano-Fe) and ground fertilization of (N, P) in the growth and production yield of rapes (Brassica napus L.). The experiment included three levels of foliar fertilization (Nano-Fe) that is (0, 5, 10 Kg. ha-1) and one level of ground fertilization (N 100 Kg. ha-1, P 250 Kg. ha-1). The experiment designed according to Randomized Complete Block Design (R.C.B.D) with three replications each parameter. The studied traits were nutrients content (macro-micro) in seeds and soil, the percentage of protein, oil, and carbohydrate. All data were analyzed and used statistically. Results showed a significant difference between Nano-Fe fertilization and nutrient content (N, Mn, K, Ca, Mg, S, and Cu), pH in soil at the level of 10 kg. ha-1, compared to no-fertilization. Moreover, the significant difference between Nano-Fe fertilization, yield (1425.6 kg. ha-1), the percentage of oil (52.16%), protein content in seeds (46.5%), carbohydrate (26.8%), Nutrient content N and P in seeds at the level of 10 kg. ha-1, compared to no-fertilization and the nutrient content (Ca, Mg, Fe) in seeds at levelof5 kg. ha-1, compared to no-fertilization. Current results suggested that Nano-Fe fertilization at the level of 10 kg. ha-1 can be adopted as the best level for rapes (Brassica napus L.) cultivation under semi-arid conditions.
AAV Purification by anion-exchange chromatography
Authors: Camacho Frank , Cerro R.P , Varas N , Leiva M.J , Toledo Jorge Roberto , Sánchez Oliberto
Published: April 2019

We describe a new optimized, scalable and reproducible method based on anion exchange chromatography to obtain high titers of rAAV vectors without empty capsids contamination. The method takes advantage of Q-sepharose matriz to development a scalable procedure. After the virus harvest from supernatant and lysate cells, virus crude was subjected to anion exchange chromatography with Q-sepharose column. Three different protocols were tested, and the elution peaks were evaluated through qPCR rAAV titration and 260/280 nm ratio determination in order to identified empty capsid-containing fractions. A 150 mM NH4Ac wash step fallowing by 1 M NaCl elution step generate a a high titer eluted fraction of rAAV with 1.334 260/280 nm ratio. The described method makes rAAV vector purification an easily adapted for a large scale GMP production format to produce empty capsid free rAAV for clinics.
Morphotaxonomy and Distribution of Marine Green Algal Flora in Kalegauk Island
Authors: Htwe Aung Thet
Published: April 2019

The marine green algae were collected from Apor Seik, Pashyu Chaung, Chaytoryar Pagoda, Alè Seik, Auk Sei, and Kyunn Pyet or Cavendish Island along the Kalegauk Island from September 2016 to January 2017. In the study areas, salinity range and temperature regimes seawater were 26-27 ‰ and 29° C to 31° C, respectively. Mainly the present study had been made to know the diversity and distribution of marine green algae along the Kalegauk Island. Marine green algae were identified based on their internal and external morphological characters. The total 14 species could be recorded in Kalegauk Island. Of these species, almost all species were first new records for Kalegauk Island.Alson, it was concluded that all species would be the most diverse and abundant in Apor seik. Moreover, the present study could provide evaluating the impacts of marine green algae resources caused by infrastructures in the future.
How Prefrail Older People Living Alone Perceive Information and Communications Technology and What They Would Ask a Robot for: Qualitative Study
Authors: Daniele Katia , Marcucci Maura , Cattaneo Cesarina , Borghese Nunzio Alberto , Zannini Lucia
Published: April 2019

Background

In the last decade, the family system has changed significantly. Although in the past, older people used to live with their children, nowadays, they cannot always depend on assistance of their relatives. Many older people wish to remain as independent as possible while remaining in their homes, even when living alone. To do so, there are many tasks that they must perform to maintain their independence in everyday life, and above all, their well-being. Information and communications technology (ICT), particularly robotics and domotics, could play a pivotal role in aging, especially in contemporary society, where relatives are not always able to accurately and constantly assist the older person.

Objective

The aim of this study was to understand the needs, preferences, and views on ICT of some prefrail older people who live alone. In particular, we wanted to explore their attitude toward a hypothetical caregiver robot and the functions they would ask for.

Methods

We designed a qualitative study based on an interpretative phenomenological approach. A total of 50 potential participants were purposively recruited in a big town in Northern Italy and were administered the Fried scale (to assess the participants’ frailty) and the Mini-Mental State Examination (to evaluate the older person’s capacity to comprehend the interview questions). In total, 25 prefrail older people who lived alone participated in an individual semistructured interview, lasting approximately 45 min each. Overall, 3 researchers independently analyzed the interviews transcripts, identifying meaning units, which were later grouped in clustering of themes, and finally in emergent themes. Constant triangulation among researchers and their reflective attitude assured trustiness.

Results

From this study, it emerged that a number of interviewees who were currently using ICT (ie, smartphones) did not own a computer in the past, or did not receive higher education, or were not all young older people (aged 65-74 years). Furthermore, we found that among the older people who described their relationship with ICT as negative, many used it in everyday life. Referring to robotics, the interviewees appeared quite open-minded. In particular, robots were considered suitable for housekeeping, for monitoring older people’s health and accidental falls, and for entertainment.

Conclusions

Older people’s use and attitudes toward ICT does not always seem to be related to previous experiences with technological devices, higher education, or lower age. Furthermore, many participants in this study were able to use ICT, even if they did not always acknowledge it. Moreover, many interviewees appeared to be open-minded toward technological devices, even toward robots. Therefore, proposing new advanced technology to a group of prefrail people, who are self-sufficient and can live alone at home, seems to be feasible.
Practices and Attitudes Towards Patient E-Communication and Social Media Use Amongst Neurology Providers (Preprint)
Authors: Jones Ashley , St. Michel Anne , Manners Steven , Baral Stefan , Oh Jiwon
Published: April 2019

BACKGROUND

E-communication is increasingly being utilized in healthcare but there is limited research investigating the practices and attitudes of providers towards the use of these tools in professional settings.

OBJECTIVE

To assess the experiences, attitudes, and practices of neurology healthcare providers, regarding e-communication contact with patients and social media (SM) use.

METHODS

Two surveys assessing patient e-communication and SM use were disseminated by e-mail to subscribers of NeuroSens, an online educational platform.

RESULTS

67% and 27% of respondents completely opposed patient contact to their personal mobile and e-mail respectively, while the remaining respondents believed propriety was situation-dependent. Respondents tolerant to patient contact were more likely to have been contacted for urgent matters in the past. Most respondents (54%) used at least one of the main SM networks, and 76% denied having posted inappropriate content. The majority of respondents (74%) were unfamiliar with any SM policy within their practicing institution and the vast majority (98%) agreed clinical institutions need to establish updated e-communication policies.

CONCLUSIONS

Neurology healthcare providers demonstrate conservative practices and perceptions of SM use and patient e-communication, despite limited institutional guidance. With the continued growth of e-communications tools, there is a strong need to for clinical institutions to establish policies to support the use of these applications within healthcare.
University Students’ Value Orientation Toward Integrity Behind Their Decision To Cheat Or Not Cheat In Exams
Authors: Pringgabayu Dematria , Wisesa Anggara , Pritasari Adita , Ramdlany Dany Muhammad Athory , Hidayanti Nurfaisa
Published: April 2019

Organizational values characterize every activity, including the behavior of the members of an organization, and their decision-making. However, there are moments in which the members of the organization violate the values, even though they know they should not. It also happens to university students. This fact brings us to reflect on how the values are interpreted in value orientation. By employing the phenomenological method using Kohlberg’s constructivist theory of moral development stages, this study explored the value orientation towards integrity in business school students’ decisions to cheat or not. The result indicates that even for students who face the same decision to cheat or not, their decision is affected by how they understand the value of integrity, which depends on their value orientation and their cognitive moral development. Most respondents had a mindset of egoistic value orientation, which is more concerned with the benefits and payback when making a decision. Most cases happened without there being a prior decision to cheat; the decision is made at the time of the exam by considering the emerging internal or external situational factors.
Primeira ocorrencia de podosordaria mexicana Ellis & Holway no Brasil
Authors: Poroca D. J. M. , P. de Lira Nelly
Published: April 2019

Podosordaria mexicana Ellis & Holway es descrita por primera vez para el Brasil. Esta especie es común sobre heces de burro, conejo, vaca y caballo.
Morfogénesis en hongos dematiaceos II: estudio comparativo de cepas aisladas de suelos con fonsecaea pedrosoi.
Authors: Ramos Laura L. , Borghi Alfredo L. , De Bracalenti Blanca J. C.
Published: April 2019

Se efectuó un estudio comparativo entre 5 cepas de hongos dematiáceos (levaduriformes y filamentosos) aislados de suelos con un cepa de fonsecaea pedrosoi.En cuanto a su patogenicidad una de ellas con características del género Wangiella mostró un proceso inflamatorio en las patas de los ratones inoculados en menor grado que fonsecaea pedrosoi.y manteniendo su forma levaduriforme
Evolução e tendências das pesquisas sobre t-learning: um mapeamento das publicações disponíveis na base de dados SCOPUS de 2000 a 2011
Authors: De Souza Pinto Claudia Alexandra , Zancanaro Airton , Sá Paulo , Spanhol Fernando José , Crocomo Fernando Antonio
Published: April 2019

Estudos sobre aplicações e serviços para TV Digital Interativa com foco na educação a distância, denominados de t-learning são relativamente recentes, pois o corpo de conhecimentos na área é encontrado de forma dispersa e fragmentada. Obter uma base sólida de conhecimentos sobre t-learning apresenta-se como um desafio e uma oportunidade de pesquisa. O objetivo deste artigo é mapear o perfil das pesquisas acadêmico-científicas em t-learning. Para tanto, foram utilizados procedimentos e técnicas bibliométricas, a partir da base de dados SCOPUS, de forma a localizar estudos sobre o tema no período de 2000 a 2011. Os resultados apresentam uma caracterização das instituições, dos pesquisadores e das áreas do conhecimento que estão estudando o tema, sendo significativa a presença de pesquisadores das áreas tecnológicas, assim como uma análise geral do campo de estudos com base nos 65 artigos mapeados na pesquisa.
FLUÊNCIA TECNOLÓGICA DOS TUTORES EM AMBIENTES VIRTUAIS
Authors: Mallmann Elena Maria , Schneider Daniele Da Rocha
Published: April 2019

A fluência tecnológica dos tutores em ambientes virtuais implica saber como utilizar as tecnologias educacionais, compreendê-las, além de criar e compartilhar soluções. Pesquisamos de que modo os tutores utilizam e compreendem as ferramentas recursos (disponibilização de conteúdos) e atividades de aprendizagem para potencializar a mediação pedagógica em ambientes virtuais. Desenvolvemos observaçãoparticipante e aplicamos um questionário tipo survey aos tutores presenciais e a distância, com foco na fluência em tecnologias educacionais. Analisamos os resultados de pesquisa-ação, destacando que a fluência tecnológica apresenta relação direta com a implementação das atribuições dos tutores, potencializando as situações de ensinoaprendizagem e a problematização em torno do conteúdo curricular. Concluímos afirmando que a fluência tecnológica dos tutores em ambientes virtuais requerhabilidades contemporâneas, conceitos fundamentais e capacidades intelectuais para utilizar, compreender, criar e compartilhar soluções educacionais mediadas pelas tecnologias
Cultura Digital e Aprendizagem Cooperativa
Authors: De Bona Aline Silva , De Morais Anuar Daian , De Azevedo Basso Marcus Vinicius , Fagundes Léa Da Cruz
Published: April 2019

O trabalho é uma pesquisa bibliográfica de conceitos importantes para a área da Informática na Educação como: redes, ciberespaço, cibercultura, interação e aprendizagem cooperativa na cultura digital. A base teórica para aprendizagem está alicerçada nos conceitos de colaboração e cooperação dos Estudos Sociológicos de Jean Piaget de 1973, e tais conceitos são conectados e elucidados com duas pesquisas na área da Educação Matemática: os Portfólios de Matemática e o Espaço de Aprendizagem Digital da Matemática, realizada por um dos autores. O objetivo deste é proporcionar um momento de reflexão, a partir de resultados obtidos nas duas pesquisas supracitadas que articulam prática e teoria, aos professores e pesquisadores da área, sobre tais conceitos, valendo-se da necessidade de se escutar os estudantes para assim contribuir para a melhoria da educação no Brasil. Nesta pesquisas verifica-se a construção dos conceitos de matemática pelos estudantes da escola básica, sendo um resultado positivo da articulação destes conceitos discutidos no artigo.
INTERAÇÃO, COOPERAÇÃO E SISTEMATIZAÇÃO DA APRENDIZAGEM EM AMBIENTE VIRTUAL: UMA PROPOSTA METODOLÓGICA INOVADORA
Authors: Costa e Silva Ana Paula , Machado Michelle Jordão , Bessa Ferreira Sandra Mara
Published: April 2019

Os ambientes virtuais de aprendizagem concentram diferentes recursos e ferramentas de comunicação síncrona e assíncrona, que representam um arsenal tecnológico com elevado potencial, que somente pode ser explorado em sua plenitude por meio de propostas metodológicas inovadoras. O presente trabalho descreve uma proposta de utilização de ambientes virtuais que privilegia os processos de interação, cooperação esistematização das experiências em favor da efetividade dos processos de ensino e aprendizagem. Para comprovação de tal efetividade, são apresentados resultados de uma pesquisa realizada junto a estudantes de cursos de pós-graduação a distância, que evidenciam as contribuições que os momentos individuais e coletivos previstos na proposta metodológica aplicada podem representar para a aprendizagem dos estudantes.
TELECENTROS COMUNITÁRIOS COMO FERRAMENTA DE APOIO NO PROCESSO DE INCLUSÃO DIGITA
Authors: De Sousa Filho Júlio Lourenço , Costa de oliveira Ana Carolina
Published: April 2019

Diante das necessidades impostas pela nova sociedade da informação e da constante presença das tecnologias no cotidiano das comunidades, tem-se presenciado o surgimento de uma nova classe de cidadãos considerados digitalmente excluídos e, na tentativa de combater essa exclusão, várias organizações investem no sentido de disponibilizar centros de acesso às TICs. Com o intuito de conhecer a atuação dessescentros de inclusão é que este trabalho propôs como objetivo analisar o papel dos telecentros comunitários como ferramenta de apoio no processo de inclusão digital da cidade A, sendo que para realização do estudo fez-se uso de uma pesquisa quantitativa do tipo descritiva, para a qual foi gerado um questionário e aplicado entre os usuários dos telecentros. Após o levantamento de informações e a análise dos dados, verificou-se que apenas uma parcela reduzida da população da cidade utiliza os recursos tecnológicos presentes nesses ambientes de inclusão, entretanto, entre os frequentadores, pôde-se observar que esses centros têm cumprido suas tarefas básicas, que é a disponibilização de acesso grátis às TICs.
Um Jogo Sério em 3D para Apoiar a Aprendizagem Sensível ao Contexto dos Estudantes
Authors: Monteiro de Lima Rodrigo , Milton Mendes Neto Francisco , De Almeida Rodrigues Rafael
Published: April 2019

Este artigo descreve o desenvolvimento de um jogo de aprendizagem ubíqua capaz de simular uma universidade virtual para dispositivos móveis, bem como desktops. No caso dos dispositivos móveis, o jogo sério é capaz de perceber a localização do usuário e identificar em qual ambiente o usuário se encontra, para, posteriormente, recomendar desafios relacionados àquela localidade ou área de estudo. O usuário também aprenderá diversos conceitos de disciplinas ao interagir com avatares presentes no ambiente virtual. O ambiente virtual também conta com desafios que utilizam realidade aumentada para que o jogador assimile melhor os conceitos aprendidos em sala de aula através de aplicações do mundo real.
Objetos de Aprendizagem no Apoio à Aprendizagem de Engenharia: Explorando a Motivação Extrínseca
Authors: Filho Alberto Bastos do Canto , Ferreira Luiz Fernando , Bercht Magda , Tarouco Liane Margarida Rockenbach , Lima José Valdeni de
Published: April 2019

Este artigo propõe um método de apoio à aprendizagem que utiliza Objetos de Aprendizagem para melhorar o rendimento de estudantes de engenharia. A proposta explora os recursos tecnológicos para automatizar práticas que, embora viáveis em aulas particulares, são impraticáveis no contexto típico de cursos de engenharia: aulas expositivas ministradas para turmas com um grande número de alunos. É dada ênfase ao domínio afetivo, explorando-se a motivação extrínseca dos estudantes para modificar seus hábitos de estudo. Apresenta-se também um estudo de caso, comparando o métodoproposto com o método de ensino e aprendizagem tipicamente utilizado.
OBJETOS DE APRENDIZAGEM SOB O PONTO DE VISTA DOS ALUNOS: UM ESTUDO DE CASO
Authors: Carneiro Mára Lúcia Fernandes , Silveira Milene Selbach
Published: April 2019

Objetos de Aprendizagem (OA) têm sido amplamente discutidos, incluindo, por exemplo, diretrizes para sua produção e avaliação, padrões para sua construção e experiências relatando sua utilização em ambientes de ensino presenciais e a distância. Quanto à experiência de uso, neste artigo discutem-se os resultados de uma pesquisa realizada com 76 alunos usuários de OA, concernentes às questões relacionadas à aprendizagem com ou a partir do objeto em questão. Esta pesquisa permitiu verificar-se que características consideradas fundamentais para a concepção e produção de um OA são também destacadas pelos alunos, reforçando a necessidade de serem amplamente difundidas e atendidas, para que seus usuários consigam, de forma dinâmica, explorar e aprofundar conteúdos e habilidades necessárias a sua formação.
ANÁLISE DE SIMILARIDADE DE CÓDIGOS-FONTE COMO ESTRATÉGIA PARA O ACOMPANHAMENTO DE ATIVIDADES DE LABORATÓRIO DE PROGRAMAÇÃO
Authors: Maciel Danilo Leal , Soares José Marques , França Allyson Bonetti , Gomes Danielo Gonçalves
Published: April 2019

Este trabalho apresenta a implementação e a avaliação de umaferramenta de apoio ao acompanhamento de atividades laboratoriais deprogramação de computadores. Um suporte automatizado instrumentaliza o professor para a comparação e a análise de similaridade entre as soluções apresentadas pelos alunos, para os problemas de programação propostos. A fim de desconsiderar diferenças irrelevantes entre códigos-fonte, foram desenvolvidas técnicas para normalizar os códigos antes do processo de comparação realizado pelo algoritmo Sherlock, frequentemente empregado para detecção de plágio em documentos de caráter geral. As técnicas desenvolvidas apresentam resultados equivalentes aos das melhores ferramentas usadas para a detecção de plágio. A proposição do problema pelo professor, o envio das soluções dos alunos e a análise de similaridade são feitos através de um módulo implantado no Moodle, facilitando a gestão desse tipo de atividade em turmas numerosas. O sistema foi experimentado em uma turma de programação ao longo de um semestre e os resultados são apresentados nesse artigo.
Gibi Digital: uma atividade de matemática desenvolvida cooperativamente no espaço do Facebook
Authors: Bona Aline Silva De , Fagundes Léa Da Cruz , Basso Marcus Vinicius de Azevedo
Published: April 2019

O artigo é o relato de uma atividade de matemática proposta no espaço de aprendizagem digital escolhido pelos estudantes, do IFRS - Campus Osório, como o Facebook, em 2012. A atividade tem a finalidade de mobilizar os estudantes a demonstrar o que aprenderam sobre os conceitos de geometria espacial. A metodologia de trabalho docente com os estudantes é dialogada de Freire, e o método de análise dos gibis é à luz da Teoria de Piaget, onde esta atividade é parte de uma pesquisa-ação de doutoramento. O objetivo do artigo é apontar atividades interessantes aos estudantes, sendo estas extraclasse e alicerçadas na tecnologias digitais, online e/ou não, onde ocorrem a aprendizagem cooperativa dos conceitos de matemática tão usualmentecitados em avaliações externas. Dentre os resultados desta atividade cita-se a escrita dos conceitos de geometria espacial de acordo com suas palavras e o destaque dados pelos estudantes aos gibis como recursos para estudar.
E-Maturity: entrelaçando gestão, tecnologia e pedagogia
Authors: Rodrigues Herik Zednik , Tarouco Liane M. R. , Klering Luis R.
Published: April 2019

Este artigo apresenta uma abordagem teórica que busca compreender e conceituar o termo e-maturity (maturidade eletrônica), cujo estudo se justifica por ser foco da pesquisa de doutorado intitulada Ematurity: gestão da tecnologia em função da melhoria do desempenho educacional, desenvolvida no Programa de Pós-Graduação em Informática na Educação (PPGIE), da Universidade Federal do Rio Grande do Sul. Para fundamentar o termo (e-maturity) utilizado na pesquisa, retomamos a Teoria da Maturidade-imaturidade, de Chris Argyris (1969), e, buscamos naEngenharia de Software, o Modelo de Maturidade de Capacidade deSoftware- CMM.
Em direção a uma aprendizagemmais lúdica, significativa e participativa: experiências com o uso de jogos educacionais, tecnologias móveis e comunidade virtual com sujeitos em tratamento oncológico
Authors: Barbosa Débora Nice Ferrari , Bassani Patrícia Brandalise Scherer
Published: April 2019

Os jogos educacionais e as tecnologias móveis, aliadas as comunidades virtuais de aprendizagem, potencializam a aprendizagem móvel e conectada. A partir de uma parceria com uma associação que atende sujeitos em tratamento oncológico, percebemos as dificuldades que os sujeitos enfrentam em acompanhar os conteúdos escolares durante os períodos de hospitalização ou de baixa imunidade. Neste período, em que é necessário o afastamento da escola, são realizadas atividades de reforço escolar e de informática básica oferecidas pela associação. Desta forma, este artigo apresenta as experiências iniciais com o uso de jogos e as tecnologias móveis, articuladas à uma comunidade virtual de aprendizagem, no reforço aos conteúdos do currículo escolar e de temas relacionados a informática básica com crianças e adolescentes em tratamento oncológico.
Educação (a distância) desterritorializada: uma proposta para a formação de docentes online
Authors: Souza Elmara Pereira de , Oliveira Eduardo David de
Published: April 2019

Esse artigo apresenta a proposta da educação (a distância) desterritorializada, compreendida como a educação que resiste às políticas públicas impostas, que aproveita as brechas para produzir singularidades, que resiste aos fluxos instituídos da educação a distância oficial. Os fundamentos da investigação encontram-se nos pressupostos teóricos de Gilles Deleuze e Felix Guattari, em especial nos conceitos de agenciamento, comunicação transversal e desterritorialização. A formação de docentes online em ambiente virtual de aprendizagem, na perspectiva da educação (a distância) desterritorializada, deve ser pensada como um processo próprio da cibercultura, vinculada à ética do coletivo, do acontecimento, da comunicação transversal, do agenciamento do desejo e da singularização.
Avaliação de Interfaces por Usuários Finais:Mensurando a Qualidade Afetiva e o Impacto na Aprendizagem de Conteúdos
Authors: França Rozelma Soares de , Silva Paulo Ricardo Bezerra da , Amaral Haroldo José Costa do , Lira Mirtes Ribeiro de
Published: April 2019

Este artigo propõe um método para avaliação de interfaces em softwares educativos, envolvendo estudantes, em ambiente escolar. A proposta é baseada no SAM, um instrumento de avaliação iconográfico que contempla questões relacionadas à qualidade afetiva de sistemas computacionais, e na taxonomia de objetivos educacionais de Bloom. Experimentos realizados para a avaliação de interfaces de um software educativo voltado ao ensino da Lógica de Programação demonstram a viabilidade da proposta, permitindo identificar a satisfação dos usuários, a cada interface projetada, e o seu impacto na aprendizagem dos conteúdos contemplados.