bluuebunny/crossref_metadata_2025 huggingface dataset:
A Bayesian Hierarchical Analysis of Geographical Patterns for Child Mortality in Nigeria
Authors: Adeyemi Rasheed A. , Zewotir Temesgen , Ramroop Shaun
Published: June 2019

Background:

In an epidemiological study, disease mapping models are commonly used to estimate the spatial (or temporal) patterns in disease risk and to identify high-risk clusters, allowing for health interventions and allocation of the resources. The present study proposes a hierarchical Bayesian modeling approach to simultaneously capture the over-dispersion due to the effect of varying population sizes across the districts (regions), and the spatial auto-correlation inherent in the childhood mortality at districts (state) level in Nigeria.

Methods:

This cross-sectional study was based on 31842 children data extracted from the 2013 Nigeria Demographic and Health Survey (DHS). Of these children, 2886 died before reaching the age of five years. A Standardized Mortality Ratio (SMR) was estimated for each district (state) and mapped to highlight the risk patterns and detect an unusual low (high) clusters relative risk of childhood mortality. Generalized Poisson regression models were formulated with random effects to estimate the mortality risk and then explored to investigate the relationship of under-five child mortality and the regional risk factors. The random effects are formulated to reflect the potential tendency of “neighbouring” regions to have similar risk patterns and the spatial heterogeneity effect was used to capture geographical inequalities in the mortality outcomes. The models were implemented using a full Bayesian framework. All model parameters were estimated in WinBUGSviaMarkov Chain Monte Carlos (MCMC) simulation techniques.

Results:

The results showed that of the economically deprived households, 2.088: 95% CI (1.088, 3.165) were significantly associated with childhood mortality, while unhygienic sanitation and lack of access to improved water sources were positively associated with child mortality, but not statistically significant at 5% probability level. The geographical variation of the under-five mortality prevalence was found to be attributed to 69% clustering and 31% was due to spatial heterogeneity factors. The predicted probability maps identified clusters of high risk mortality in the northern regions and low prevalence of concentrated mortality in the south-west regions of Nigeria.

Conclusion:

The results demonstrated the flexibility of the approach that explored the geographical variation in the potential risk factors of child mortality and that it provides a better understanding of the regional variations of mortality risks. Nonetheless, both representations can help to provide information for the initiation of public health interventions.
Nutrition and Dietetics Directors’ Workload and Compensation Related to Program Accreditation Activities
Authors: AbuSabha Rayane , Coleman Mary Dean
Published: June 2019

Nutrition and dietetics program directors were surveyed to quantify the amount of time they spend meeting accreditation-related requirements, and to determine the type of compensation they receive for their director workload. The survey was sent electronically in August 2011 to all nutrition and dietetics directors (N=572).

A total of 312 usable surveys were received for a 54.5% response rate. The distribution of respondents almost mirrored the general distribution of nutrition and dietetics programs: 138 (44%) from Dietetic Internship (DI) programs, 122 (39%) from Didactic Programs in Dietetics (DPD), 29 (9%) from Coordinated Programs (CP) and 23 (7%) from Dietetic Technician (DT) programs. The majority of respondents (83%) were faculty based at a college or university, of whom, 49% had annual teaching loads between 18 and 24 credits. The average number of hours spent on director-type activities was approximately 22 hours/week with 15.6 of these hours dedicated to meeting accreditation specific requirements. Of the 248 directors who responded to the compensation questions, the majority (n=198, 80%) reported receiving some form of time relief or compensation for their responsibilities as program directors, commonly a 3-credit or 6-credit annual load reduction. On the other hand, 55 directors (22%) received no time relief or compensation for any of their work as program directors.

Overall, the reported compensation did not match the level of effort stated by directors. Future evaluations should examine the possible association between the amount of time program directors spend on accreditation-related activities and the quality of their programs, and whether these accreditation activities are affecting the quality of the work for the directors’ other job responsibilities.
Dietary Changes Among First Year University Students: The Peer-to-Peer (P2P!) Nutrition Project
Authors: Tallant April , Marques Brenda , Martinez Nicole
Published: June 2019

Research is lacking in whether college nutrition courses lead to dietary improvements. Literature indicates that behavioral theory-based interventions can lead to nutritional improvements and that motivational interviewing and peer teaching can be effective for student-learning, but interventions combining these findings is scarcely reported in the literature. The purpose of this study was to evaluate dietary and nutrition self-efficacy changes among first year students (n=35) throughout a semester enrolled in a first-year university personal nutrition seminar course; and to assess whether intervention method (motivational interviewing versus traditional nutrition education) delivered by peers, impacted kilocalories, total fat, saturated fat and nutrition self-efficacy as reported at the end of the semester. Students completed pre-and post-measures including three-day food records, diet analyses, and surveys, and were randomly assigned to meet with peer nutrition counselors (upper division nutrition majors) who conducted sessions using either motivational interviewing or traditional nutrition education. Paired t-tests showed decreases in kcals, total fat, and saturated fat for the motivational interviewing group from pre-to-post-measure, but differences were not statistically significant (P>.05). The traditional nutrition education group showed statistically significant decreases in kcals, total fat, and saturated fat (P<.05) from pre-to-post-measure. Differences in nutrition self-efficacy for the motivational interviewing group was statistically significant (P<.05), but was not for the traditional nutrition education group (P>.05) from pre-to-post-measure. When comparing statistically significant changes in diet and nutrition self-efficacy between the two intervention techniques, analysis of covariance showed no statistically significant differences in kilocalories, total fat, saturated fat or nutrition self-efficacy at post-measure (P>.05), therefore, intervention technique did not impact dietary or nutrition self-efficacy changes. Additionally, student perceptions of the peer-to-peer intervention used to attempt dietary change was evaluated. Positive perceptions of the peer-to-peer nutrition project indicated that the project is a viable teaching methodology and may be used by registered dietitians employed in various settings, particularly in other universities teaching similar types of nutrition courses. Results showed that incorporating peer-to-peer nutrition education in university courses may be effective in facilitating dietary changes and improved nutrition self-efficacy in college freshman.
Personal Attributes of Successful Interns as Perceived by Dietetic Internship Directors and Preceptors from Varying Generations
Authors: Smythe Jamie A. , Schumacher Julie R. , Cullen Robert W. , Ma Yoon Jin
Published: June 2019

Personal attributes of students and employees are increasingly important to educators and employers. This study determined the personal attributes perceived by Dietetic Internship Directors and Preceptors from varying generations that lead to success in Dietetic Internships.

Internship Directors and Preceptors throughout the United States participated in this 2012 study. A mixed methods approach was utilized. The results from a preliminary web-based survey of Preceptors and Dietetic Internship Directors local to the researchers were used to develop a list of personal attributes. The final survey provided participants the opportunity to rate 35 personal attributes. Usable data for analysis was received from 311 responders.

The top ten reported personal attributes included: motivation, completion of tasks, dependability, respectful, positive attitude, flexible, listening skills, asks questions, open minded, and professional. Dietetic Internship Directors perceived flexibility (M=9.53) and punctuality (M=9.34) to lead to success significantly (p=0.017) more than Preceptors (M=9.30; M=9.04). Results showed significant differences in success-associated attributes of Interns among the primary setting, generation, and Registered Dietitian status of Directors and Preceptors. The Behavioral category of personal attributes was perceived to be more important than Communication or Interpersonal.

This study suggests that some personal attributes are more highly valued by Dietetic Internship Directors and Preceptors than others. Knowledge of these attributes can help guide allied health educators in preparing future interns and employers in selecting potential employees.
Fight for Your Right to Fruit: Development of a Manga Comic Promoting Fruit Consumption in Youth
Authors: Leung May May , Green Melanie C , Cai Jianwen , Gaba Ann , Tate Deborah , Ammerman Alice
Published: June 2019

Innovative interventions addressing childhood obesity are needed to capture the attention of youth living in a multi-media environment. The purpose of this paper is to describe the qualitative study that was conducted to inform the development of an appealing manga comic (Japanese comic art) to promote fruit consumption in youth and the process of creating the comic. Seven focus groups and two interviews (N=28) were conducted with middle-school students to better understand such topics as enjoyable components of manga comics and important health concepts. Two researchers independently analyzed each transcript using ATLAS.ti. Inductive and deductive processes were used to identify codes (ideas emerging from text); similar codes were grouped into themes. Most frequently mentioned themes related to enjoyable components of manga comics were detailed graphics and artistic style of text used to convey sound effects. The majority said eating fruits and vegetables was the most important nutrition behavior for proper health. When asked about story ideas for a manga comic to encourage youth to be healthy, many responded with ideas involving comic characters who would consume fruit, then gain beneficial attributes. Others suggested highlighting more practical benefits, such as increased focus and energy. These findings informed the development of a 30-page manga comic promoting fruit consumption, with the aim of developing an appealing storyline and relatable characters for youth. Manga comics may be able to create an entertaining learning environment that has potential to promote positive dietary behaviors in youth.
Изопараметрические гетероструктуры AlInGaAsP/InP и их свойства
Authors: Алфимова Д.Л. , Лунин Л.С. , Лунина М.Л. , Пащенко А.С. , Данилина Э.М.
Published: June 2019

The paper discusses the influence of growth conditions on the structural perfection of AlInGaAsP/InP thin-film heterostructures. The main parameters determining the structural perfection and surface quality of thin AlInGaAsP epitaxial films grown on indium phosphide substrates from the liquid phase in the temperature gradiend field are determined.
Электрические и оптические свойства нерелаксированных гетероэпитаксиальных структур InAs-=SUB=-1-x-=/SUB=-Sb-=SUB=-x-=/SUB=-
Authors: Гусейнов Р.Р. , Танрывердиев В.А. , Belenky G.L. , Kipshidze G. , Алиева Е.H. , Алигулиева Х.В. , Ализаде Э.Г. , Ахмедова Х.Н. , Абдуллаев Н.А. , Мамедов Н.Т. , Зверев В.Н.
Published: June 2019

The electrical and galvanomagnetic properties of unrelaxed heteroepitaxial structures of InAs1-xSbx (x = 0.43 and x = 0.38) were studied in a wide temperature range of 5-300K and magnetic fields up to 8 T. The band gap of the composition InAs0.57Sb0.43 was estimated from the thermo-activation dependence of the electrical conductivity, and is equal to 120 meV. The electron concentration in InAs1-xSbx (n=6·1016 cm-3 for InAs0.62Sb0.38 and n=5·1016 cm-3 for InAs0.57Sb0.43) determined from the Hall effect and consistent with the electron concentration calculated from Shubnikov-de Haas oscillations. Also, implemented spectral ellipsometric studies of unrelaxed heteroepitaxial structures of InAs1-xSbx (x = 0.43 and x = 0.38) in the photon energy range of 1-6 eV. The spectral dependences of the imaginary and real parts of the dielectric constant are determined. The dispersion dependences of the refractive indices and extinction are calculated and given.
Зависимость проводимости слоев пористого кремния от направления переноса носителей заряда
Authors: Гусева E.A. , Форш E.A.
Published: June 2019

We study the carrier transport mechanisms in the layers of mesoporous silicon for carrier transport along the layer surface (perpendicular to silicon columns) and perpendicular to the layer surface (along silicon columns). It is established that the conductivity measured along the layer surface is much lower than the conductivity measured perpendicular to the surface. The analysis of the temperature and frequency dependences of the conductivity lead to a conclusion that there are various carrier transport mechanisms in the cases considered.
Исследование пьезоэлектрического резонанса в стехиометрических кристаллах LiNbO-=SUB=-3-=/SUB=- в области высоких температур и проводимости
Authors: Палатников М.Н. , Сандлер В.А. , Сидоров Н.В. , Макарова О.В.
Published: June 2019

In order to establish conditions of lithium niobate based piezoelectric resonators application at high temperatures and high conductivity in a wide range of temperatures (~ 300 – 850К) we have researched piezoelectric, ferroelectric, dielectric properties and ion conductivity of near-stoichiometric LiNbO3stoich crystals. We have revealed that piezo-resonance is observed in LiNbO3stoich in a certain temperature range ΔТ (correspondingly, in certain static conductivity relaxation time Δtau_V range) and frequencies range Δomega_R provided that tau_V-1<<omegaR. Such patterns are probably applicable not only to LiNbO3stoich crystals, but also to other piezoelectric materials.
Микропластичность аморфного и кристаллизованного сплава Fe-=SUB=-78-=/SUB=-P-=SUB=-20-=/SUB=-Si-=SUB=-2-=/SUB=-
Authors: Иевлев В.М. , Канныкин С.В. , Ильинова Т.Н. , Вавилова В.В. , Сериков Д.В. , Баикин A.C.
Published: June 2019

With the aim of establishing the mechanism of plastic deformation the local hardness and plasticity of the amorphous alloy (AA) Fe78P20Si2 at different stages of its crystallization, thermal annealing (TA) at 300-750оС or short-term photonic treatment (PT) with the dose received at the sample radiation of 10-60 J/cm-2 is mapped. The phase composition and structure were investigated by x-ray diffractometry and high-resolution transmission electron microscopy. With a general sequence of structural changes, the crystallization rate at the PT is more than two orders of magnitude greater than TA that indicates the effect of a high rate of input of the activation energy of the process. The nonmonotonic dependence of hardness, modulus of elasticity and the proportion of plastic deformation in the work of indentation depending on the annealing temperature or the dose of radiation entering the sample as a result of structural changes in the alloy was established. In this case, the local plasticity of the initial alloy and the fully crystallized one are close in magnitude. Based on the features of the crystal structure of the Fe3P phase (respectively, the impossibility of the dislocation mechanism of plastic deformation) and on the assumption of the identity of the structural unit (tetrahedral cluster Fe3P) of the crystallized and amorphous alloy, the conclusion about the cluster mechanism of plastic deformation of the as is formulated.
Термодинамические свойства и фазовые переходы микрокристаллической и наноструктурированной керамики SmFeO-=SUB=-3-=/SUB=-
Authors: Каллаев С.Н. , Алиханов Н.М-Р. , Омаров З.М. , Садыков С.А. , Сирота М.А. , Абдулвахидов К.Г. , Солдатов А.В.
Published: June 2019

AbstractThe heat capacity and dielectric properties of microcrystalline and nanostructured SmFeO_3 ceramics obtained by solid phase synthesis are studied. The ceramics is synthesized by the treatment of the batch at room temperature in Bridgman anvils by forceful action combined with shear deformation followed by sintering. It is established that the mechanoactivation results in noticeable broadening antiferromagnetic–ferroelectric transition and shifting the temperature of phase transition in the low-temperature area. The phase transition having typical for relaxation oscillator frequency dependent character is found at 558 K. It is shown that the defect structure can take a dominant place in the formation of the physical properties of ceramics.
Микрофазовое разделение в имидсилоксановом сополимере
Authors: Новиков Д.В. , Светличный В.М. , Мартыненков А.А.
Published: June 2019

By means of electron microscopy, a comparative analysis of the micro-inhomogeneous structure of the surface of films of amorphous aromatic polyetherimide — poly{4,4'-bis[(4''-N-phenoxy) diphenylsulfone] imide 1,3-bis (3',4-dicarboxyphenoxy) benzene} (PEI) - and imidosiloxane block copolymer (PSI) containing blocks of PEI units and blocks of dimethylsiloxane units. It is shown that in the PSI film, compared with PEI, the anisotropy, long-range order, and the correlation length of density fluctuations increase. The PSI sample has an asymmetrical biaxial surface texture, unlike PEI, which is characterized by an axial texture. In the direction of the axes of the PSI texture on a micron scale, periodic density oscillations are observed. The results obtained indicate microphase separation in the PSI film due to spatially oriented contact interactions between the blocks of dimethylsiloxane units.
Памяти А.А. Рухадзе и В.П. Силина Низкочастотная асимптотика спектрального распределения энергии равновесного излучения в электронной плазме
Authors: Бобров В.Б.
Published: June 2019

It is shown that a logarithmic feature in the low-frequency asymptotics of the spectral energy distribution of the equilibrium radiation in an electron plasma occurs with arbitrary degeneration of electrons within the framework of the ideal gas approximation for the transverse dielectric permittivity.
Определение плазменных колебаний в металлах методом полного внешнего отражения рентгеновских лучей
Authors: Стожаров В.М.
Published: June 2019

AbstractA method to determine plasma oscillations in metals with the aid of total external reflection (TER) of X-rays is proposed. It is shown that the plasmon energy, concentration of conduction electrons, and Fermi energies can be calculated using experimentally measured grazing angles of X-rays after TER. Such characteristics depend on crystallographic directions and may depend on the TER depth.
Легкий гибкий солнечный элемент на основе гетероэпитаксиальной структуры InGaP/GaAs
Authors: Путято М.А. , Валишева Н.А. , Петрушков М.О. , Преображенский В.В. , Чистохин И.Б. , Семягин Б.Р. , Емельянов Е.А. , Васев А.В. , Скачков А.Ф. , Юрко Г.И. , Нестеренко И.И.
Published: June 2019

The article considers the problems of formation the light flexible III–V compounds-based solar cell. Approaches of the problems solves were proposed. Was fabricated the light flexible solar cell based on the InGaP/GaAs heteroepitaxial structure. The solar cell weight and size characteristics have been determinate. The solar cell specific weight was 0.51 kg / m2.The bending tests showed that the minimum bending radius of the solar cell is 36 mm. The solar cell current-voltage characteristics were measured for AM0 and AM1.5D spectrum at 28.6°C и 25°C respectively. The efficiency was 23.1% for AM0 and 28.32% for AM1.5D.
Влияние ионосферы и неоднородной структуры Земли на поляризационные характеристики магнитного поля в диапазоне частот 0.2-200 Hz в ближней зоне горизонтальной заземленной антенны
Authors: Терещенко Е.Д. , Сидоренко А.Е. , Терещенко П.Е.
Published: June 2019

AbstractPolarization characteristics of the field of an on-Earth emitter located at the Kola Peninsula are experimentally measured at a distance that is no greater than the height of an effective ionospheric waveguide in the FENICS-2014 experiment. Variations in the field amplitude and orientation of the major axis of polarization ellipse are observed at lower frequencies upon significant changes of the K index of geomagnetic activity. Polarization characteristics of the horizontal component of magnetic field calculated with allowance for the ionosphere and two-layer Earth structure prove the observed sensitivity of the ultralow- and lower-frequency filed in the near-field zone to the state of ionosphere at lower conductivity of underlying medium. Theoretical results are compared with the experimental data. The results are important for deep sounding of the Earth and monitoring of ionosphere with the aid of controlled low-frequency ground sources.
Передача электронной энергии в одиночной донор-акцепторной паре с триплет-триплетным поглощением
Authors: Осадько И.С.
Published: June 2019

AbstractFörster resonance energy transfer (FRET) is examined in a single donor (D)–acceptor (A) pair whose molecules have both singlet and triplet states. Two cases are considered: (i) the excitation of the D–А pair occurs with the participation of a singlet band of the donor, and (ii) the excitation also involves the participation of an additional triplet–triplet absorption. The triplet state of the donor is shown to have no effect on the expression for the FRET efficiency, but it generates off intervals in the fluorescence track of both the donor and the acceptor. The triplet state of the acceptor strongly affects the expression for the FRET efficiency, making the complete energy transfer impossible and generating off intervals in the acceptor fluorescence track. It is shown that, if the light can excite not only the singlet transition in the donor, but also the triplet–triplet absorption band, then a weak luminescence appears in off intervals, which is orders of magnitude weaker than that in on intervals.
Одиночные центры и димеры примесных ионов гольмия в кристаллах синтетического форстерита: спектроскопия высокого разрешения
Authors: Чукалина Е.П. , Тюренков И.О. , Жариков Е.В. , Субботин К.А.
Published: June 2019

AbstractHigh-resolution low-temperature absorption spectra in the region of the ^5 I _8 → ^5 I _7, 6, 5, 4, ^5 F _5 transitions in impurity Ho^3+ ions in synthetic forsterite crystals (Mg_2SiO_4) are recorded. Comparison of the observed shape of the spectral lines with the hyperfine structure calculated using crystal-field theory makes it possible to attribute the spectral lines to single centers and dimers for the first time.
Использование спектральной эллипсометрии и спектроскопии комбинационного рассеяния света в скрининговой диагностике колоректального рака
Authors: Кручинин В.Н. , Кручинина М.В. , Прудникова Я.И. , Спесивцев Е.В. , Рыхлицкий С.В. , Володин В.А. , Шеховцов С.В. , Пельтек С.Е.
Published: June 2019

Diagnostic monitoring of groups of healthy patients and patients with colorectal cancer (CRC) at various stages of the development of the disease was carried out using Raman spectroscopy (CRS) and measuring the state of polarized light in the vicinity of surface plasmon resonance (SPR) observation conditions. For the diagnosis, the reaction of serum antigens with antibodies to serum M2-pyruvate kinase (M2-PK) was used near the observation conditions of SPR, for which we used the Ellips-SPEC spectral ellipsometric complex created in the Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences (ISP SB RAS). The complex has high sensitivity, accuracy and non-destructive impact on the sample under study. The intensities of the peaks at 1005, 1157 and 1520 cm-1 in the CRS spectra of CRC patients as compared with healthy individuals as well as the intensity of the equilibrium plasmon signal were significantly lower, correlating with the stage of the disease and the presence of metastases. It allows us to consider these optical methods as a promising diagnostic approaches in the diagnosis of CRC, including in the early stages of the disease.
Оценки скорости Ферми и эффективной массы в эпитаксиальных графене и карбине
Authors: Давыдов С.Ю.
Published: June 2019

AbstractIt is shown that the Fermi velocity of electrons is a natural characteristic of gapless graphene and cumulene modification of carbyne weakly coupled with the substrate. At the same time, in the presence of gap (graphene with a gap and polyyne modification of carbyne), the corresponding characteristic is the effective electron mass. The corresponding analytical estimations have been performed.
Амплитудно-частотные и фазово-частотные характеристики вынужденных колебаний нелинейного дробного осциллятора
Authors: Паровик Р.И.
Published: June 2019

In the work, using the amplitude-frequency (AFC) and phase-frequency characteristics (PFC) of forced oscillations of a non-linear fractional oscillator, their connection with the orders of fractional derivatives, which are included in its model equation, is substantiated. It is shown, using computer simulation, that the orders of fractional derivatives are related to the quality factor of an oscillatory system. A decrease in the higher order (“fractional” inertia) leads to a decrease in the quality factor, and a decrease in the lower order (“fractional” friction) leads to an increase in the quality factor. Therefore, we come to two mechanisms for controlling the Q of the oscillatory system, where the orders of fractional derivatives play the role of control parameters.
Диодные структуры на основе магнитных гетеропереходов (In, Fe)Sb/GaAs
Authors: Ведь М.В. , Дорохин М.В. , Лесников B.П. , Павлов Д.А. , Усов Ю.В. , Кудрин А.В. , Дёмина П.Б. , Здоровейщев А.В. , Данилов Ю.А.
Published: June 2019

The current-voltage characteristics of light-emitting diodes based on InGaAs/GaAs heterostructures with an injector made of a diluted magnetic semiconductor (In,Fe)Sb are investigated. The current-voltage characteristics of the (In,Fe)Sb/n-GaAs and (In,Fe)Sb/p-GaAs structures are analyzed. The band diagrams of heterojunctions are described. It is shown that the studied structures are similar to structures with a Schottky barrier by the current transfer mechanism.
Поляризованная флуоресценция молекул NADH при двухфотонном возбуждении фемтосекундными лазерными импульсами с длиной волны 720-780 nm
Authors: Сасин М.Э. , Горбунова И.А. , Безверхний Н.O. , Бельтюков Я.М. , Rubayo-Soneira J. , Васютинский О.С.
Published: June 2019

The decay of polarized fluorescence in coenzyme NADH upon two-photon excitation by femtosecond laser pulses at the wavelength range of 720- 780 nm in water/methanol solution has been investigated. Decay fluorescence times tau_1 and tau_2, rotation diffusion time tau_rot, and preexponential factors a_1/a_2 ratio have been determined from experiment. The results obtained have been compared with previous results in NADH in aqueous solution.
polarized fluorescence, NADH, adenine, nicotinamide, spectroscopy, time correlation single photon spectroscopy
Спиральные, концентрические и химерные волновые структуры в двумерном ансамбле нелокально связанных генераторов Ван дер Поля
Authors: Бух А.В. , Анищенко В.С.
Published: June 2019

In the work, dynamics of a 2D ensemble of nonlocally coupled van der Pol generators are investigated using numerical simulation. The possibility of implementing regular spiral and target waves is established. The effect of the appearance of a new type of chimera structure, realized on the basis of target waves in nonlocal coupling conditions, is shown.
Влияние облучения ионами Si-=SUP=-+-=/SUP=- на резистивное переключение мемристивных структур на основе стабилизированного диоксида циркония
Authors: Окулич Е.В. , Коряжкина М.Н. , Королев Д.С. , Белов А.И. , Шенина М.Е. , Михайлов А.Н. , Тетельбаум Д.И. , Антонов И.Н. , Дудин Ю.А.
Published: June 2019

Resistive switching of memristive structures based on films of yttria stabilized zirconia (40 nm), irradiated with Si+ ions with an energy of 6 keV and a dose of 5.4∙1015 cm-2, was studied. It is established that ion irradiation leads to an increase in the stability of the parameters of resistive switching. This improvement is due to the fact that the diameter of the filaments as a result of irradiation is limited to the lateral size of the region of the individual cascades of displacement. Oxidation of such filaments in the process of resistive switching occurs more efficiently, which leads to an increase in resistance in a high resistance state.
Нейросетевой имитатор нестационарной среды в адаптивной системе передачи данных
Authors: Невзоров А.А. , Орлов А.А. , Станкевич Д.А.
Published: June 2019

Article is devoted to new method for optimizing the data transmission channel, based on neural network simulator of a nonstationary physical medium. The proposed method allows reducing the probability of reception error to corresponding level of binary phase shift keying with a small signal-to-noise ratio.
Особенности взаимодействия гидроксиапатита кальция и углеродных нанотрубок при осаждении из водных растворов
Authors: Захаров Н.А. , Шелехов Е.В. , Матвеев В.В. , Алиев А.Д. , Коваль Е.М.
Published: June 2019

The composite materials (CM) on the base of nanocrystalline (NC) calcium hydroxyapatite Са10(РО4)6(ОН)2 (HА) (NCHА) and multiwalled carbon nanotubes (CNT), that contain 0.1; 1 и 5 w. % of CNT, in of cooperative precipitation of calcium and phosphorus salts and CNT in water systems of compositions Ca(OH)2–H3PO4–H2O–CNT produced. The influence on size, morphology and solubility of NCHA in CM HA/CNT composition, that of CNT influence on calcium phosphate mineralization simulate, were defined.
Определение энергии и флюенсов протонов, коллективно ускоренных в ускорителе с диодом Люса
Authors: Рыжков В.А. , Ремнев Г.Е. , Журавлев М.В. , Пятков И.Н. , Лопатин В.С.
Published: June 2019

Plates of boron carbide B4C were used as refractory targets for determination of energy and fluencies of protons collectively accelerated in a Luce diode accelerator by control of 7Be and 13N gamma-radioactivities induced by nuclear reactions 10B(p,α)7Be and 12C(p,γ)13N, respectively. The Luce diode exploited a cylindrical tungsten rod as a cathode and polyethylene washer as an anode, producing pulsed electron beams with durations and currents of up to 100 ns and 30 kA at voltages of 250 kV. The technique allows controlling proton energies within the range of 500-1500 keV and fluencies of up to 5•1013 protons per cm2 per pulse.
Мощные высокоскоростные фотодиоды Шоттки для аналоговых волоконно-оптических линий передачи СВЧ-сигналов
Authors: Чиж А.Л. , Микитчук К.Б. , Журавлев К.С. , Дмитриев Д.В. , Торопов А.И. , Валишева Н.А. , Аксенов М.С. , Гилинский A.M. , Чистохин И.Б.
Published: June 2019

The design and technology of manufacturing of high-power Schottky barrier UHF-photodiodes with microstrip contacts made on the basis of InAlAs/InGaAs heterostructures have been developed. The operation frequency of 15-micron diameter photodiodes is greater than 25 GHz, while the maximum attainable output UHF power exceeds 50 mW at a frequency of 20 GHz. This allows one to utilize these photodiodes in analog fiber-optic UHF signal transmission lines as well as for generation and processing of UHF signals by optical techniques in radar systems and UHF measurement and instrumentation.
Struktur Sebaran dan Tata Ruang Anggrek Epifit (Orchidaceae) di Hutan Pantai Cagar Alam Pulau Sempu Malang, Jawa Timur
Authors: Sadili Asep
Published: June 2019

Penelitian ini bertujuan untuk mengetahui struktur, sebaran, dan tata ruang jenis-jenis anggrek epifit yang ada di hutan pantai Cagar Alam Sempu, Malang, Jawa Timur. Penelitian menggunakan plot memanjang 10 m x 1.000 m (1 ha), yang dibagi menjadi 100 anak plot. Letak plot dari Pantai Semut ke arah Pantai Sumber Air Tawar. Seluruh jenis anggrek epifit dalam plot dicatat dan dihitung jumlahnya (rumpun). Hasil menunjukkan terdapat empat jenis dari tiga marga, dengan kerapatan 77 rumpun/ha. Jenis dominan adalah Taeniophyllum cf. biocellatum, diikuti Dendrobium subulatum, Grosourdya appendiculata, dan Dendrobium crumenatum. Pola tata ruang sebaran berdasarkan tiga parameter indeks dan uji chi-square bagi setiap jenis menunjukkan adanya pola acak.Structure, Distribution, and Spatial Patterns of Epiphytic Orchids (Orchidaceae) at Coastal Forest of the Sempu Island Nature Reserve, Malang, East Java AbstractThe aim of this study is to know the structure, spatial pattern, and distribution of epiphytic orchids in coastal forest Sempu Nature Reserve, Malang, East Java. This study used an elongated plot of 10 m x 1.000 m (1 ha), and was divided into 100 subplots. The location of plot was from Semut Beach to the direction of Sumber Air Tawar Beach. All the epiphytic orchids species of inside plot were recorded and counted (clumps). The results showed that there was four species from three genera with density of 77 clumps/ha. The most dominant species was Taeniophyllum cf. biocellatum, followed by Dendrobium subulatum, Grosourdya appendiculata, and Dendrobium crumenatum. Spatial pattern of distribution based on three parameter indices, and chi-square test showed that every species showed a random pattern.
Developing Peer Corrective Skills in Business Letter Writing in English as a Foreign Language
Authors: Farneste Monta , Pašinska Olga
Published: June 2019

Peer corrective feedback (PCF) implementation is a topical issue in writing skills development at tertiary level. Those researchers who explore the application of PCF in higher education (e.g. Liu and Sadler, 2003; Hyland, K. and Hyland, F., 2006) admit that students face difficulties in providing quali­ta­tive feedback that determines the effectiveness of this teaching tool. Therefore, the goal of this paper was to investigate what actions could be taken in order to develop students’ PCF skills and, consequently, foster the quality of PCF. The primary research method was a case study in which the participants were 24 second-year undergraduates majoring in English as a Foreign Language (EFL) at a university in Latvia. The materials of the case study involve the genre of a business letter, which plays a vital role in people’s professional and everyday life. The results of the research revealed that providing students with an assessment scale and teaching how to apply it increase the quality of PCF.
Use of Tense-Aspect Forms in Cordis Project Reports
Authors: Kuzmina Jana
Published: June 2019

For several recent decades the Council of Europe and various European authorities have been encouraging various European universities and other institutions to unite research activities resulting in the creation of partnerships with a conventialised genre network of calls for projects, guidelines for proposals and databases of project documentation. Along with Latvia acting in political, economic and social arenas of the European Union, it has also been actively involved in research consortia as coordinator and participant, therefore, setting new objectives for communicative competence development of scholars and project managers in order to reflect the discursive practices. In view of this, the present cross-sectional empirical investigation is intended to explore the written genre of Community Research and Development Infor­ma­tion Service (CORDIS) periodic (status) and closure (results in brief) pro­ject reports as fundamental documents to account for research results in various eco­no­mi­cally and socially significant spheres. The selected research metho­do­logy is a descriptive case study, involving genre and discourse analysis. The obtained results claim that reports have a rigid generic macro-structure. It explains the use of the selected tense-aspect forms to express the commu­ni­cative aim in both types of reports; however, periodic reports demonstrate higher variation due to the involvement of a different discourse community. The signi­ficance of the study lies in the scarcity of previous research on this genre and wide application of research findings to support the discourse community of researchers.
The Fuzzy Concept of Idiom and What It Might Mean for Bilingual Dictionaries
Authors: Veisbergs Andrejs
Published: June 2019

Linguistic categories were developed as tools for describing language systems and making them easier to learn. However, like many theoretical con­cepts and systems, they do not fully represent the real world and, in some cases, seek to imprison linguistic units within a well-ordered system – a procrustean bed as it were. Besides, although the most general categories are universal, the lower-ranking ones are often language-specific. Idiom (or phraseologism) is a very unclear linguistic concept, subject to never-ending debate. However, a strict adherence to categorisation is observable in practical bilingual lexico­graphy and phraseography. This may lead to unwanted compartmentalisation and a skewed product. The conventional practice in bilingual lexicography is to provide B-language idiom equivalents or analogues for A-language idioms and B-language lexical items for A-language words. B-language idioms are not normally provided for A-language words and vice versa. This reflects thinking in terms of structures, rather than of semantic equivalence. The sharp demarcation of structures in dictionaries erects needless barriers by imposing the theoretical concepts of idiom, compound, derivative and metaphorical lexical item on to practical lexicography. The phrase-compound-derivative-idiom divide is often quite arbitrary and changes over time. Moreover, the only functional equivalent for a word is often an idiom and vice versa.
Ataque cerebrovascular agudo como presentación de neurocisticercosis: reporte de un caso
Authors: Rueda Cárdenas Luisa Fernanda , Bernal Cobo Rafael Hernando , Franco Ruiz Cesar Augusto
Published: June 2019

La cisticercosis es una infección parasitaria, prevalente principalmente en países en vía de desarrollo, con una seroprevalencia en Colombia de 8,6 % (1). Generalmente, el diagnóstico se realiza en el contexto de una de sus formas más graves, la neurocisticercosis, que a su vez presenta un espectro grande de manifestaciones que van desde crisis epilépticas hasta accidentes cerebrovasculares agudos. Este reporte describe el caso atípico de una mujer joven con infarto cerebral secundario a neurocisticercosis, complicación que representa un reto clínico importante y que se debe considerar en el diagnóstico diferencial.
Redes y cognición. Abordando la mente extendida
Authors: Sánchez-Sordo Jóse Manuel , Peñalosa-Castro Eduardo Abel , Cárdenas López María Georgina , Villalobos-Castaldi Fabiola Miroslaba
Published: June 2019

La mente extendida comprende la cognición como compartida entre componentes biológicos y no biológicos al suponer a las herramientas como parte de la misma. En esa línea, el conectivismo (Siemens, 2006) es una teoría que plantea al conocimiento como distribuido en una red online. Objetivo: describir cómo ocurre la cognición extendida en internet y utilizando un sistema desarrollado desde el conectivismo. Método: N = 336; se aplicaron cuestionarios acerca del uso de internet, se elaboró un sistema y ofertó un curso para conocer actividades de aprendizaje de los participantes. Se utilizaron algoritmos de inteligencia artificial para analizar los datos. Resultados: con el algoritmo J48 se encontraron 35 patrones (ROC = 0.96) que clasifican a los sujetos infiriendo cómo extienden sus procesos cognitivos. Con el algoritmo K-means se obtuvieron clústeres de sus características y percepción de la extensión de la cognición en redes y se encontraron patrones de uso del entorno desarrollado. Conclusión: los patrones muestran cómo las personas extienden sus procesos cognitivos para aprender en línea. La aplicación de inteligencia artificial permitió descubrir conocimiento en los datos.
Intervención psicofisiológica para el manejo afectivo de una paciente con trastorno depresivo bipolar-II
Authors: Velasco-Moreno David Alberto , Velasco-Moreno Leticia Ríos
Published: June 2019

Se presenta el caso de una paciente femenina de 25 años de edad, soltera, con problemas de pareja y diagnóstico depresivo bipolar tipo II. Para el manejo afectivo de su depresión se utilizaron estrategias de intervención psicofisiológicas que regularan la actividad autonómica subyacente al nivel de estrés, ansiedad y depresión, así como la promoción del lenguaje afectivo mediante la escritura emocional autorreflexiva, y estrategias cognitivo-conductuales como entrenamiento asertivo, solución de problemas y activación conductual. Los resultados de regulación autonómica muestran cambios clínicos en la temperatura periférica en manos para el manejo de estrés; un decremento en la tasa respiratoria cuando la paciente logra expresar su lenguaje afectivo de manera asertiva e incremento de lenguaje propositivo. Los índices psicométricos de ansiedad y depresión disminuyeron clínicamente. Se concluye que el manejo psicofisiológico es útil para regular el estado afectivo negativo y se propone ampliar su manejo posterior con estrategias de aceptación y compromiso.
Efecto de musicoterapia sobre la inteligencia y la interacción social en mujeres privadas de libertad con trastornos psiquiátricos
Authors: Jiménez-Munguia Luis Manuel , Cruz-Martínez Luis Arturo , Vargas-González Lía Monserrat , Hinojosa-López Josué Edgardo , Salmerón-Najera Gumaro , Silva-Sánchez José Ramón , Becerra-Ramírez J. Jesús , Godínez-Vallejo Obdulio Porfirio , Dávila-Ruíz Yazmín , Rodríguez-Meza Edith , Solares-López Jesús Eduardo , Ramos -Jiménez José Luis
Published: June 2019

Existe poca evidencia científica de musicoterapia en población privada de su libertad; incluso no hay datos de alguna intervención en mujeres privadas de su libertad con trastornos psiquiátricos. El objetivo del presente estudio es analizar el efecto de la musicoterapia en el factor general de inteligencia y en la interacción social en mujeres sentenciadas con trastornos psiquiátricos. Se evaluó el factor general de inteligencia de 13 participantes antes y después de una intervención de musicoterapia. Se analizó la frecuencia de conductas prosociales y agresivas emitidas durante la intervención (34 sesiones). Se encontró que las participantes tuvieron una mejoría en el factor general de inteligencia antes ( = 18.15, D.E. = 12.09) y después ( = 21.15, D.E. = 12.43) de la intervención, pero los resultados no fueron estadísticamente significativas de acuerdo con la prueba t para muestras relacionadas (p = 0.167). Asimismo hubo un aumento en la frecuencia de conductas prosociales y un aumento en la frecuencia de conductas prosociales y una disminución de conductas agresivas durante las sesiones. En suma, la evidencia no es contundente en la mejora del factor general de inteligencia, pero facilita la interacción social al aumentar conductas prosociales y disminuir las agresivas. Se discuten las implicaciones del estudio para futuras investigaciones.
Analizando desde el humanismo el dicho “Sólo las mentes frágiles le temen a la igualdad”
Authors: Ramírez-Chelala Hernández Soraya Irinea
Published: June 2019

La sociedad ha experimentado grandes transformaciones, por lo que sus necesidades, ideologías y demandas también se han modificado. Por ejemplo, cada vez hay mayor interés en atender fenómenos como como la opresión de género y la opresión del profesor hacia el alumno. Teniendo como eje la perspectiva del desarrollo humano, en el presente ensayo se analiza la pedagogía de género con enfoque humanista, libertario, afectivo y de esperanza. También se estudia lo relacionado con la sostenibilidad en la educación. El objetivo de este análisis se enfoca en generar conciencia de la imperiosa necesidad de crear una pedagogía que genere un aprendizaje y crecimiento del individuo como persona integral. Se necesita una pedagogía de la esperanza que proyecte a los educandos hacia un mejor futuro creado por ellos mismos. Si la pedagogía se enfoca en crear estrategias para enseñar al individuo a ser él quien forja su historia, hará seres libres. La libertad surge de no depender de un superior; de hacerlo por sí mismo.
Analysis of Pro-Environmental Behavior (PEB) through Motivation of Senior High School Students
Authors: Nur Fitriana Desi Eka , Miyarsah Mieke , Rusdi Rusdi
Published: June 2019

Proenvironmental behavior is a behavior that seeks to minimize negative impacts on the environment which could be influenced by several factors, one of which is motivation. This study aims to analyze the direct effect of motivation on proenvironmental behavior. This research was conducted using quantitative approach with causal survey method and analyzed using path analysis. The number of samples used as respondents is 200 students from class XI MIA SMAN 1 Tangerang Regency. Based on the results, a conclusion could be made that there is a positive direct effect of personality on proenvironmental behavior with a path analysis coefficient of 0.159. There is a positive direct effect of motivation on proenvironmental behavior with a path coefficient of 0.486.

Keywords: Motivation, Pro Environment Behavior, Path Analysis.

Abstrak. Perilaku pro lingkungan adalah perilaku yang berupaya meminimalkan dampak negatif terhadap lingkungan yang dipengaruhi oleh beberapa faktor, salah satunya adalah motivasi. Penelitian ini bertujuan untuk menganalisis pengaruh langsung motivasi terhadap perilaku pro lingkungan. Penelitian ini dilakukan dengan menggunakan pendekatan kuantitatif dengan metode survei kausal dan dianalisis menggunakan analisis jalur. Jumlah sampel yang digunakan sebagai responden adalah 200 siswa kelas XI MIA SMAN 1 Kabupaten Tangerang. Berdasarkan hasil pengujian hipotesis dapat disimpulkan bahwa ada pengaruh langsung positif kepribadian terhadap perilaku proenvironmental dengan koefisien analisis jalur sebesar 0,159. Ada pengaruh langsung positif dari motivasi pada perilaku pro lingkungan dengan koefisien jalur 0,486.

Kata Kunci: Motivasi, Perilaku Pro Lingkungan, Analisis Jalur