bluuebunny/crossref_metadata_2025 huggingface dataset:
Фотофизика полупроводникового полимерного нанокомпозита с фуллереном С-=SUB=-60-=/SUB=- и эндоэдральным металлофуллереном Ho@C-=SUB=-82-=/SUB=-
Authors: Кареев И.Е. , Бубнов В.П. , Алиджанов Э.К. , Пашкевич С.Н. , Лантух Ю.Д. , Летута С.Н. , Раздобреев Д.А.
Published: December 2019

The photoexcitation energy transfer was studied in donor-acceptor systems (DA) formed from a mixture of the semiconductor polymer poly [2-methoxy-5- (2`-ethylhexyloxy) -1,4-phenylenevinylene] (MEH-PPV) with C60 fullerene and endohedral metallofullerene Ho@C82. A significant effect of the exciton migration between the polymer units on the quenching of MEH-PPV luminescence has been established. The Foerster radii of nonradiative energy transfer for the investigated DA systems are estimated. It is shown that the DA system formed using endohedral metallofullerenes is the most effective. Based on MEH-PPV, model photovoltaic cells with different doping levels C60 and Ho@C82 were formed. For the formed cells, the spectral sensitivity of the Photo-EMF and the kinetics of the increase in the Photo-EMF signal under pulsed irradiation were measured. The mobility of charge carriers in the studied polymer composites was estimated. It was found that a change in the concentration of endohedral metallofullerene within 1-2% allows you to change the effective mobility of free carriers of the polymer heterojunction.
Теплопроводность кубических монокристаллов ZrO-=SUB=-2-=/SUB=-, стабилизированных оксидом иттрия
Authors: Борик М.А. , Волкова Т.В. , Кулебякин А.В. , Курицына И.Е. , Ломонова Е.Е. , Мызина В.А. , Милович Ф.О. , Рябочкина П.А. , Табачкова Н.Ю. , Зенцова А.И. , Попов П.А.
Published: December 2019

The temperature dependence of the thermal conductivity of cubic ZrO2 single crystals stabilized by yttrium oxide from 8 to 40 mol % was studied in the temperature range 50–300 K. The analysis of this dependence was carried out taking into account the phase composition, local structure features, and electrical characteristics of these single crystals.
К вопросу об устойчивости метастабильной omega-фазы в псевдомонокристаллическом цирконии
Authors: Егорова Л.Ю. , Хлебникова Ю.В. , Пилюгин В.П.
Published: December 2019

In the Bridgman chamber at temperatures of 20, 70, 100, 300 °C and at the identical scheme of loading zirconium pseudo-single samples are tested. The tests were carried out with a research objective of a possibility of maintaining the metastable ω-phase at increased temperatures. Researches showed that in the course of warm deformation, as a result of formation of equilibrium interphase boundaries and the oriented nucleation and growth of a ω-phase, there are stable structural configurations which promote increase in stability of a ω-phase after cooling and removal of loading. In the sample tested at 300 °C dispersion particles of hydride of zirconium, variable structure - δ-ZrH2-h which cause the high hardness comparable with a hardness of the sample which was subjected to tests at the room temperature are found.
Переключение поляризации вдоль подложки в тонких пленках Bi-=SUB=-4-=/SUB=-Ti-=SUB=-3-=/SUB=-O-=SUB=-12-=/SUB=- при различных деформационных напряжениях
Authors: Мухортов В.М. , Стрюков Д.В. , Бирюков С.В. , Головко Ю.И.
Published: December 2019

A study of epitaxial Bi4Ti3O12 thin films with a pre-deposited 4 nm Ba0.4Sr0.6TiO3 sublay-er on (001) MgO substrates has been performed. In the obtained heterostructures, the rotation of the Bi4Ti3O12 film unit cells by an angle of 45° relative to the MgO substrate unit cell in the inter-face plane has been observed. The Bi4Ti3O12 films contain unit cell deformations depending on the thickness of the film and the sign of the deformation changes at a thickness of ~40 nm. The switchable in-plane spontaneous polarization of Bi4Ti3O12 film at the 180° domain structure oc-curs at a film thickness of 10 nm and increases with a thickness up to 54 µC/cm2. The study of the dielectric characteristics of the films confirmed the existence of properties anisotropy in the interface plane and the effect of deformation of the unit cell on the properties of heterostruc-tures.
Фосфоресценция жидкого кислорода при возбуждении на кооперативных переходах в видимой области спектра
Authors: Багров И.В. , Гоголева Н.Г. , Гренишин А.С. , Киселев В.М.
Published: December 2019

The phosphorescence of liquid oxygen were studied upon its excitation at the cooperative transitions of O2-O2 molecular oxygen complexes with using for direct optical excitation of LED matrices with radiation in the near UV and visible spectral regions with wavelengths partially or completely coinciding with the absorption lines of molecular complexes
О некоторых новых возможностях управления квантовыми системами с помощью униполярных предельно коротких импульсов
Authors: Архипов Р.М. , Архипов М.В. , Пахомов А.В. , Розанов Н.Н.
Published: December 2019

На основании приближенного решения уравнения Шредингера изучено воздействие пары предельно коротких, субцикловых импульсов малой амплитуды на квантовую систему. Показано, что в случае, когда длительность импульсов короче обратных частот атомных переходов, вероятность переходов между уровнями определяется электрической площадью импульса и временной задержкой между ними. Как следствие этого факта, униполярный импульс по сравнению с биполярным способен оказывать более эффективное воздействие на систему, а последовательность импульсов реализует селективное воздействие на квантовые объекты, несмотря на нерезонансный характер взаимодействия. Ключевые слова: предельно короткие импульсы, униполярные импульсы, аттосекундные импульсы.
Нелинейное просветление InAs нитевидных нанокристаллов в видимом диапазоне
Authors: Кулагина А.С. , Хребтов А.И. , Рыжов А.А. , Данилов В.В. , Штром И.В. , Котляр К.П. , Алексеев П.А. , Смирнов А.Н. , Резник Р.Р. , Цырлин Г.Э.
Published: December 2019

The spectral and nonlinear optical properties of InAs nanowires suspensions in isopropanol were studied at room temperature. InAs nanowires were synthesized by molecular beam epitaxy. The absorption spectra of suspensions with a characteristic maximum at a wavelength of 235 nm were obtained, as well as Raman spectra in the range 180–280 cm – 1. The nonlinear transmission of InAs nanowires with a diameter less than the Bohr radius of the exciton upon two-photon excitation in the transparency region in the visible range (λ = 468 nm) was studied firstly. The effect of cumulative bleaching was discovered, the manifestation of which is associated with the dynamic Stark effect.
Наносекундное воздействие интенсивного лазерного излучения на тонкие плёнки TiAlN
Authors: Ивлев Г.Д. , Зайков В.А. , Климович И.М. , Комаров Ф.Ф. , Людчик О.Р.
Published: December 2019

The spectral dependencies (λ = 0.35-1.0 μm) of the transmittance and reflectivity (R) of TiAlN thin films deposited on glass and Si substrates by magnetron sputtering technique have been measured. The TiAlN/Si films of 0.5 μm thickness were irradiated by single nanosecond (70 ns) ruby laser pulses in order to study the influence of laser-induced thermophysical processes in TiAlN on its R(t) dynamics at the wavelengths λ1 = 0.53 and λ2 = 1.06 μm of probing radiation, and on the state of laser irradiation zones, which was studied by optical and scanning electron microscopy. The observed in the experiment and connected with the pulsed heating dynamics changes of R - increase at λ1 and decrease at λ2 amplifies as the irradiation energy density W approaches to the threshold of laser ablation of the nitride ~ 1 J/cm2. Laser-induced thermophysical processes, occurring at W = 0.6-0.9 J/cm2, lead to a specific modification of the TiAlN layer with the formation of a net of cracks due to thermal stresses arising during the laser pulse. The increase of W leads to the formation of a more developed net/cellular structure of the film with a smaller average size of cells.
Определение температуропроводности материалов методом нестационарного точечного нагрева
Authors: Головин Д.Ю. , Тюрин А.И. , Самодуров А.А. , Головин Ю.И.
Published: December 2019

Express thermographic method for measuring thermal diffusivity of thin flat objects is described in the paper. It could be considered as modification or a branch of laser flash method, however it does not require sample cutting or two side access to the object. The method comprises step-like heating of the small area (~ 0.1 mm2) at the object surface by focused laser beam and continuous recording temperature distribution at the surface by thermal camera. Developed data processing technique does not require information about absolute temperatures or absorbed energy for determination of thermal diffusivity coefficient.
Хлорид-гидридная газофазная эпитаксия полуполярного слоя AlN(1012) на наноструктурированной подложке Si(100)
Authors: Бессолов В.Н. , Компан М.Е. , Коненкова Е.В. , Пантелеев В.Н.
Published: December 2019

A new approach is proposed to the synthesis of a semipolar AlN on a Si(100) substrate at the surface for which the angle between the inclined plane of the nanogrooves and Si(100) is 47°. It is shown that the hydride vapor-phase epitaxy on a such nano-patterned substrate enables formation of a semipolar layer AlN (1012) characterized by the full width at half maximum value as low as ωθ ~60 arcmin for the x-ray diffraction rocking curve.
It is found that the Raman spectra of the semipolar AlN(10-12) layer contain additional peaks on the Raman curves associated with phonons A1(TO) and E1(TO), in contrast to the polar AlN(0001) layer, where the peak A1(LO) is additionally manifested.
Структура и сегнетоэлектрические свойства гетероэпитаксиальных тонких пленок NaNbO-=SUB=-3-=/SUB=-, полученных методом RF-катодного распыления
Authors: Павленко А.В. , Стрюков Д.В. , Тер-Оганесян Н.В.
Published: December 2019

For the first time, thin films of NaNbO3 on a MgO(001) substrate, on which a SrRuO3 layer was previously deposited, were obtained by RF cathode sputtering in an oxygen atmosphere. According to x-ray diffraction analysis the films are single phase and single-crystalline. The lattice parameters in the tetragonal approximation for the NaNbO3 and SrRuO3 layers were: с(NaNbO3) = 0.3940(1) nm, a(NaNbO3) = 0.389(1) nm; с(SrRuO3) = 0.4004(1) nm, a(SrRuO3) = 0.392(3) nm. The unit cell deformation for NaNbO3 was ε33 = 0.007, ε11 = 0.002. Dielectric and piezoelectric measurements indicate that the films are in a ferroelectric state.
Резистивное переключение в мемристорах на основе гетероструктур Ag/Ge/Si
Authors: Горшков О.Н. , Шенгуров В.Г. , Денисов С.А. , Чалков В.Ю. , Антонов И.Н. , Круглов А.В. , Шенина М.Е. , Котомина В.Е. , Филатов Д.О. , Серов Д.А.
Published: December 2019

It is shown that two modes of resistive switching – bipolar and volatile unipolar – are peculiar for the Ag/Ge/Si structures with germinating dislocations in the germanium layer. In this modes the structures have stable states of electric current with ION/IOFF ~1.5–2.7. The volatile unipolar type of switching can be caused by the capture of charge carriers to deep levels associated with lattice defects in the Ge film of the memristor. At the same time, bipolar switching is associated with the drift of Ag+ ions along germinating dislocations.
Online Information on Electronic Cigarettes: Comparative Study of Relevant Websites From Baidu and Google Search Engines
Authors: Chen Ting , Gentry Sarah , Qiu Dechao , Deng Yan , Notley Caitlin , Cheng Guangwen , Song Fujian
Published: December 2019

Background

Online information on electronic cigarettes (e-cigarettes) may influence people’s perception and use of e-cigarettes. Websites with information on e-cigarettes in the Chinese language have not been systematically assessed.

Objective

The aim of this study was to assess and compare the types and credibility of Web-based information on e-cigarettes identified from Google (in English) and Baidu (in Chinese) search engines.

Methods

We used the keywords vaping or e-cigarettes to conduct a search on Google and the equivalent Chinese characters for Baidu. The first 50 unique and relevant websites from each of the two search engines were included in this analysis. The main characteristics of the websites, credibility of the websites, and claims made on the included websites were systematically assessed and compared.

Results

Compared with websites on Google, more websites on Baidu were owned by manufacturers or retailers (15/50, 30% vs 33/50, 66%; P<.001). None of the Baidu websites, compared to 24% (12/50) of Google websites, were provided by public or health professional institutions. The Baidu websites were more likely to contain e-cigarette advertising (P<.001) and less likely to provide information on health education (P<.001). The overall credibility of the included Baidu websites was lower than that of the Google websites (P<.001). An age restriction warning was shown on all advertising websites from Google (15/15) but only on 10 of the 33 (30%) advertising websites from Baidu (P<.001). Conflicting or unclear health and social claims were common on the included websites.

Conclusions

Although conflicting or unclear claims on e-cigarettes were common on websites from both Baidu and Google search engines, there was a lack of online information from public health authorities in China. Unbiased information and evidence-based recommendations on e-cigarettes should be provided by public health authorities to help the public make informed decisions regarding the use of e-cigarettes.
A Mobile Health Approach for Improving Outcomes in Suicide Prevention (SafePlan) (Preprint)
Authors: O'Grady Conor , Melia Ruth , Bogue John , O'Sullivan Mary , Young Karen , Duggan Jim
Published: December 2019

BACKGROUND

Suicide is a prominent cause of death worldwide, particularly among young people. It was the second leading cause of death among those aged 15-29 years globally in 2016. Treatment for patients with suicidal thoughts or behaviors often includes face-to-face psychological therapy with a mental health professional. These forms of interventions may involve maintaining and updating paper-based reports or worksheets in between sessions. Mobile technology can offer a way to support the implementation of evidence-based psychological techniques and the acquisition of protective coping skills.

OBJECTIVE

This study aims to develop a mobile app to facilitate service users’ access to mental health support and safety planning. This process involved eliciting expert input from clinicians who are actively engaged in the provision of mental health care.

METHODS

A survey was distributed to targeted health care professionals to determine what features should be prioritized in a new mobile app relating to suicide prevention. On the basis of the survey results, a clinical design group, comprising 6 members with experience in fields such as mobile health (mHealth), clinical psychology, and suicide prevention, was established. This group was supplemented with further input from additional clinicians who provided feedback over three focus group sessions. The sessions were centered on refining existing app components and evaluating new feature requests. This process was iterated through regular feedback until agreement was reached on the overall app design and functionality.

RESULTS

A fully functional mobile app, known as the SafePlan app, was developed and tested with the input of clinicians through an iterative design process. The app’s core function is to provide an interactive safety plan to support users with suicidal thoughts or behaviors as an adjunct to face-to-face therapy. A diary component that facilitates the generalization of skills learned through dialectical behavior therapy was also implemented. Usability testing was carried out on the final prototype by students from a local secondary school, who are representative of the target user population in both age and technology experience. The students were asked to complete a system usability survey (SUS) at the end of this session. The mean overall SUS rating was 71.85 (SD 1.38).

CONCLUSIONS

The participatory process involving key stakeholders (clinicians, psychologists, and information technology specialists) has resulted in the creation of an mHealth intervention technology that has the potential to increase accessibility to this type of mental health service for the target population. The app has gone through the initial testing phase, and the relevant recommendations have been implemented, and it is now ready for trialing with both clinicians and their patients.
Evidence-Based Decision Aid for Patients With Parkinson Disease: Protocol for Interview Study, Online Survey, and Two Randomized Controlled Trials (Preprint)
Authors: Bientzle Martina , Kimmerle Joachim , Eggeling Marie , Cebi Idil , Weiss Daniel , Gharabaghi Alireza
Published: December 2019

BACKGROUND

Shared decision making is particularly important in situations with different treatment alternatives. For the treatment of idiopathic Parkinson disease, both pharmacological and surgical approaches can be applied.

OBJECTIVE

In this research project, a series of studies will be conducted to investigate how decision aids for patients with idiopathic Parkinson disease should be designed in order to support the decision-making process.

METHODS

In Study 1a, qualitative interviews will be conducted to determine which needs frequently occur for patients with idiopathic Parkinson disease. In Study 1b, the identified needs will then be rated for personal relevance by an independent group of patients in an online survey. In Study 2, a randomized controlled trial will be used to pretest different decision aids in a sample group of people who do not have a medical background and who do not have Parkinson disease. In Study 3, a randomized controlled trial will be used to investigate the effect of the decision aids that had been evaluated as positive in Study 2 with patients who have idiopathic Parkinson disease.

RESULTS

This series of studies received ethical approval in January 2020. As of June 2020, data collection for Study 1a has started, and it is estimated that Studies 1a, 1b, 2, and 3 will take approximately 4, 4, 6, and 6 months to complete, respectively. It is planned to present the results and analyses at international conferences and to submit the results to peer-reviewed journals for publication, once the studies have been completed. The findings will also be shared with clinicians and patients through presentations at information events.

CONCLUSIONS

This series of studies is intended to result in an evidence-based decision aid for patients with idiopathic Parkinson disease in order to support the informed and reflected shared decision-making process. We further intend to contribute to a deeper understanding of the individual preferences of patients with idiopathic Parkinson disease and the impact of those preferences on treatment decisions.

INTERNATIONAL REGISTERED REPORT

PRR1-10.2196/17482
Association Rule Mining and Prognostic Stratification of 2-Year Longevity in Octogenarians Undergoing Endovascular Therapy for Lower Extremity Arterial Disease: Observational Cohort Study (Preprint)
Authors: Jhang Jing-Yi , Tzeng I-Shiang , Chou Hsin-Hua , Jang Shih-Jung , Hsieh Chien-An , Ko Yu-Lin , Huang Hsuan-Li
Published: December 2019

BACKGROUND

Two-year longevity is a crucial consideration in revascularization strategies for patients with symptomatic lower extremity arterial disease (LEAD). However, factors associated with 2-year longevity and risk stratification in octogenarians or nonagenarians have been underreported.

OBJECTIVE

This paper aims to investigate the associated variables and stratify the 2-year prognosis in older patients with LEAD.

METHODS

We performed logistic regression and association rule mining based on the Apriori algorithm to discover independent variables and validate their associations with 2-year longevity. Malnutrition, inflammation, and stroke factors were identified. C statistics and Kaplan-Meier analysis were used to assess the impact of different numbers of malnutrition, inflammation, and stroke factors on 2-year longevity.

RESULTS

We recruited a total of 232 octogenarians or nonagenarians (mean age 85 years, SD 4.2 years) treated with endovascular therapy. During the study period, 81 patients died, and 27 of those (33%) died from a cardiac origin within 2 years. Association rules analysis showed the interrelationships between 2-year longevity and the neutrophil-lymphocyte ratio (NLR) and nutritional status as determined by the Controlling Nutritional Status (CONUT) score or Geriatric Nutritional Risk Index (GNRI). The cut-off values of NLR, GNRI, and CONUT were ≥3.89, ≤90.3, and >3, respectively. The C statistics for the predictive power for 2-year longevity were similar between the CONUT score and the GNRI-based models (0.773 vs 0.760; P=.57). The Kaplan-Meier analysis showed that 2-year longevity was worse as the number of malnutrition, inflammation, and stroke factors increased from 0 to 3 in both the GNRI-based model (92% vs 68% vs 46% vs 12%, respectively; P<.001) and the CONUT score model (87% vs 75% vs 49% vs 10%, respectively; P<.001). The hazard ratio between those with 3 factors and those without was 18.2 (95% CI 7.0-47.2; P<.001) in the GNRI and 13.6 (95% CI 5.9-31.5; P<.001) in the CONUT score model.

CONCLUSIONS

This study demonstrated the association and crucial role of malnutrition, inflammation, and stroke factors in assessing 2-year longevity in older patients with LEAD. Using this simple risk score might assist clinicians in selecting the appropriate treatment.
Trends in Nursing Research on Infections: Semantic Network Analysis and Topic Modeling (Preprint)
Authors: Won Jongsoon , Kim Kyunghee , Sohng Kyeong-Yae , Chang Sung Ok , Chaung Seung Kyo , Choi Min-Jung , Kim Youngji
Published: December 2019

BACKGROUND

Many countries around the world are currently threatened by the COVID-19 pandemic and nurses are facing increasing responsibilities and work demands related to infection control. To establish a developmental strategy for infection control, it is important to analyze, understand or visualize the accumulated data gathered from research in the field of nursing.

OBJECTIVE

The aim of this study was to identify the core keywords and topics of infection-related research over the past 40 years in nursing to better understand research trends in this field.

METHODS

This study was conducted in four steps: 1) selecting literature for analysis, 2) selecting the analysis units, 3) building a co-occurrence matrix and network, and 4) conducting text network analysis and topic modeling. A total of 4,854 articles published between 1978 and 2017 were retrieved from the Web of Science. Abstracts from these articles were extracted, and network analysis was conducted using the semantic network module.

RESULTS

As a result of centrality analysis using the word network extracted from the abstracts, ‘wound’, ‘injury’, ‘breast’, ‘dressing’, ‘temperature’, ‘drainage’, ‘diabetes’, ‘abscess’, and ‘cleaning’ were identified as the keywords with high values of degree centrality, betweenness centrality, and closeness centrality; hence, they were determined to be influential in the network. Ten topics were identified. The major topics were ‘PLWH’ (people living with HIV), ‘pregnancy’, and ‘STI’ (sexually transmitted infection).

CONCLUSIONS

Diverse infection research has been conducted on the topics of blood-borne infections, sexually transmitted infections, respiratory infections, urinary tract infections, and bacterial infections. STIs (including HIV), pregnancy, and bacterial infections have been the focus of particularly intense research by nursing researchers. More research on viral infections, urinary tract infections, immune topic, and hospital-acquired infections will be needed.

CLINICALTRIAL
Tracing the Decisions That Shaped the Development of MyChart, an Electronic Patient Portal in Alberta, Canada: Historical Research Study (Preprint)
Authors: Avdagovska Melita , Stafinski Tania , Ballermann Mark , Menon Devidas , Olson Karin , Paul Pauline
Published: December 2019

BACKGROUND

Understanding how health organizations decide on information technology (IT) investments is imperative to ensure successful implementation and adoption. There is a high rate of failure and a tendency to downplay the complexity of implementation progression. Alberta Health Services introduced a patient portal called MyChart. Although MyChart allows patients to view appointments and selected laboratory results and to communicate with their providers, its uptake varies.

OBJECTIVE

The study aimed to examine the institutional decision-making processes that shaped the development and implementation of MyChart.

METHODS

A historical study was conducted based on the 7-step framework, where one engages in a rigorous archival critical analysis (including internal and external criticism) of documents and analysis of interviews. We reviewed and analyzed 423 primary and secondary sources and interviewed 10 key decision makers.

RESULTS

Supportive leadership, project management, focused scope, appropriate technology and vendor selection, and quick decision making were some of the facilitators that allowed for the growth of proof of concept. The planning and implementation stages did not depend much on the technology itself but on the various actors who influenced the implementation by exerting power. The main barriers were lack of awareness about the technology, proper training, buy-in from diverse system leaders, and centralized government decision making.

CONCLUSIONS

Organizational priorities and decision-making tactics influence IT investments, implementation, adoption, and outcomes. Future research could focus on improving the applicability of needs assessments and funding decisions to health care scenarios.

CLINICALTRIAL
Understanding Time Series Patterns of Weight and Meal History Reports in Mobile Weight Loss Intervention Programs: Data-Driven Analysis (Preprint)
Authors: Kim Junetae , Kam Hye Jin , Kim Youngin , Lee Yura , Lee Jae-Ho
Published: December 2019

BACKGROUND

Mobile apps for weight loss provide users with convenient features for recording lifestyle and health indicators; they have been widely used for weight loss recently. Previous studies in this field generally focused on the relationship between the cumulative nature of self-reported data and the results in weight loss at the end of the diet period. Therefore, we conducted an in-depth study to explore the relationships between adherence to self-reporting and weight loss outcomes during the weight reduction process.

OBJECTIVE

We explored the relationship between adherence to self-reporting and weight loss outcomes during the time series weight reduction process with the following 3 research questions: “How does adherence to self-reporting of body weight and meal history change over time?”, “How do weight loss outcomes depend on weight changes over time?”, and “How does adherence to the weight loss intervention change over time by gender?”

METHODS

We analyzed self-reported data collected weekly for 16 weeks (January 2017 to March 2018) from 684 Korean men and women who participated in a mobile weight loss intervention program provided by a mobile diet app called Noom. Analysis of variance (ANOVA) and chi-squared tests were employed to determine whether the baseline characteristics among the groups of weight loss results were different. Based on the ANOVA results and slope analysis of the trend indicating participant behavior along the time axis, we explored the relationship between adherence to self-reporting and weight loss results.

RESULTS

Adherence to self-reporting levels decreased over time, as previous studies have found. BMI change patterns (ie, absolute BMI values and change in BMI values within a week) changed over time and were characterized in 3 time series periods. The relationships between the weight loss outcome and both meal history and self-reporting patterns were gender-dependent. There was no statistical association between adherence to self-reporting and weight loss outcomes in the male participants.

CONCLUSIONS

Although mobile technology has increased the convenience of self-reporting when dieting, it should be noted that technology itself is not the essence of weight loss. The in-depth understanding of the relationship between adherence to self-reporting and weight loss outcome found in this study may contribute to the development of better weight loss interventions in mobile environments.
Teknik Reduksi PAPR Gabungan PTS dan AICF pada Sistem OFDM Multiantena
Authors: Arifin Arifin , Ditasari Silvi Fitriah , Moegiharto Yoedy , Anisah Ida , Briantoro Hendy
Published: December 2019

A high PAPR value is one of important weaknesses in OFDM systems. Several reduction techniques are applied to reduce PAPR including partial transmit sequence (PTS) as well as clipping and filtering (CF). Adaptive iterative clipping and filtering is a development of iterative clipping and filtering techniques. In this paper, a combination of Partial transmits sequence and adaptive iterative clipping filtering (PTS-AICF) techniques on multi-antenna OFDM transmitters was carried out. The simulation results showed that combined technique application had a better performance than non-combined technique (PTS), either for two or four antennas, and also for different sub block numbers. Performance was also influenced by iterations number on AICF section, the more iterations were used, the better the reduction technique performance was because it produced smaller PAPR 0 value.
Online Preparation for the Remote Global Workforce
Authors: A. Manko Dr. Barbara
Published: December 2019

The purpose of researching how much online learning in a university setting influences the students’ preparedness for remote work in the global labor force is to prove the following: without the essential opportunity to learn in the virtual classroom, students might finish their degrees completely without knowledge of how to cope and function in a job position which requires partial or total online work. Being able to telecommute or work from a remote location and all that this sort of work entails will be a given within 10-20 years when new hires are being considered for employment. Universities play a key role in getting the next generation of workers ready for remote professional opportunities which would otherwise require additional training and acclimatization in order for entry level candidates to experience a seamless initialization into companies already moving steadily towards a more remote work-based model.
As crianças face a Continuidade e a Descontinuidade da mente: notas em Psicologia Social
Authors: Barros da Silva Freire Andrade Daniela , Prado de Souza Clarilza , Seidmann Susana
Published: December 2019

Este artigo propõe reflexões em torno das teses de continuidade e descontinuidade da mente, para analisar alguns de seus impactos na Psicologia Social de Moscovici e na Psicologia da Infância. Para tanto, analisa a ação de themata de base conforme Serge Moscovici, Vignaux (1994) e Ivanna Marková (2006) na construção de saberes científicos. Objetiva, por meio da ideia de múltiplos ordenamentos da realidade, como sugere Tambiah (2013), e da noção de polifasia cognitiva, anunciada por Moscovici (1978), questionar o estatuto social da criança como sujeito de representações sociais.
Pesan Dakwah Melalui Telegram (Studi Pada Channel Syiar Tauhid Aceh)
Authors: Mazidah Syarifah
Published: December 2019

This research was conducted to know the form of communication Da'wah that was built by the management of Da'wah Group on Channel Syiar Tauhid ACEH in the message of Da'wah messages, Da'wah material that is more often raised to the Channel Syiar Telegram Da'wah Group Tauhid Aceh to not be left behind in the message of Da'wah and the constraints faced during the process of delivering Da'wah messages through telegram on the channel Syiar Tauhid ACEH. Qualitative approaches and field research methods (Reseasch files) and library research. Data collection techniques in research are conducted with interviews, observations and documentation. Results of the research that the form of communication Da'wah that was built by the channel manager Da'wah on the channel Syiar Tauhid ACEH in the delivery of Da'wah messages consisting of question and answer in this respect the party Channel of Da'wah Aceh Syiar Tauhid A variety of Da'wah message materials both related to the message of Aqidah, as well as the message of Sharia and Ahklak. God. The obstacles faced during the process of delivering Da'wah messages through telegram on Channel Syiar Tauhid ACEH Competence Less and lack of the number of employees. The lack of the number of admins become the main constraint in delivering the messages of Da'wah by the Da'wah Channel Syiar Tauhid Aceh.
DETERMINANTES DO DIFERENCIAL DE ACESSO DE HOMENS E MULHERES NO MERCADO DE TRABALHO FORMAL NO BRASIL
Authors: Dos Santos Taynnara Rodrigues Alves , Matos Wiron José Saraiva , Cassuce Francisco Carlos Da Cunha
Published: December 2019

Este trabalho analisa a decomposição de probabilidade de inserção de homens e mulheres no mercado de trabalho para o ano de 2015. Os dados são provenientes da PNAD, Pesquisa Nacional por Amostra de Domicílios, em sua base de microdados para 2015. Utilizou-se o modelo de escolha qualitativa Probit que resulta na probabilidade de um indivíduo estar inserido no mercado de trabalho de acordo com as suas características individuais. A partir daí foi realizada a Decomposição de Fairlie, que permite comparar como as características individuais afetam de forma diferente o fato de homens e mulheres estarem inseridos no mercado. Como principais resultados tem-se que as variáveis que mais explicaram o diferencial de ingresso feminino foram educação e experiência, sendo ambas, características produtivas. Já para o diferencial de ingresso masculino a principal variável foi referente ao indivíduo ser a pessoa de referência no domicílio. Tais resultados indicam que as mulheres precisam mais que compensar suas características produtivas em relação aos homens, para terem a mesma chance de acesso ao mercado formal de trabalho.
CAPITAL HUMANO E GERAÇÃO DE INOVAÇÃO: UMA ANÁLISE PARA PAÍSES EM DIFERENTES NÍVEIS DE DESENVOLVIMENTO TECNOLÓGICO
Authors: Gama Fabio , Bastos Suzana , Cardoso Guilherme
Published: December 2019

A partir da ideia da Teoria do Crescimento Endógeno (Lucas) e do Desenvolvimento Econômico de Schumpeter o presente artigo objetivou verificar a relação entre capital humano (nível de educação) e empresário schumpeteriano (geração de inovação) para 43 países no período de 2000 a 2012. Para tanto, estima-se um modelo de dados em painel, tendo os depósitos de patentes como variável dependente, capital humano como variável explicativa de interesse e Gasto Bruto em P&D, Investimento Estrangeiro Direto, Força de Trabalho e Poupança Bruta como variáveis de controle. Os resultados indicam que o capital humano (nível de educação) impacta positivamente na produção de inovações (patentes) dos países tecnologicamente desenvolvidos. Por outro lado, para os países tecnologicamente subdesenvolvidos, o coeficiente de educação mostra-se não significativo e próximo de zero na regressão. Além disso, as evidências indicam que em média, os países tecnologicamente desenvolvidos têm maior nível de PIB per capita, e o crescimento do produto é positivamente correlacionado com o crescimento de patentes.
FATORES DETERMINANTES PARA A ESCOLARIDADE NA REGIÃO SUL DO BRASIL
Authors: Junior Amarildo De Paula , Silva Rodrigo Monteiro da
Published: December 2019

O Capital Humano oriundo de um alto nível de escolaridade tem sido imprescindível para o desenvolvimento e crescimento da região no qual o mesmo está alocado. Dado a importância dessa variável como determinante do crescimento econômico, avaliar quais fatores a afetam, bem como se tais fatores mantem sua influência ao longo dos anos, são essenciais para se compreender como está o nível do Capital Humano em uma região. A partir dessa problemática, a partir da análise das variáveis consideradas fundamentais para a escolaridade, o presente estudo tem como objetivo averiguar se elas mantiveram seu efeito na escolaridade da região Sul do Brasil no biênio 2004-2005 e 2014-2015. A abordagem econométrica utilizada foi o painel de dados a partir dos dados obtidos pela Pesquisa Nacional por Amostra de Domicílios (PNAD). Os resultados obtidos indicam que as variáveis de renda mínima do indivíduo, a variável de se possuir computador em casa e a variável raça se mantiveram positivamente relacionada à escolaridade na região sul após os 10 anos. No entanto, a variável água encanada se torna insignificativa estatisticamente, e variável se o indivíduo possui televisão em casa se torna negativamente relacionada com a escolaridade.
QUEM SÃO OS TRABALHADORES INSATISFEITOS NO BRASIL? UMA ANÁLISE PARA OS ANOS DE 2005 E 2015
Authors: Silveira Leonel Dos Santos , De Oliveira Camilla , Barbosa Márcio Nora , Teixeira Gibran Da Silva , Abdallah Patrizia Raggi
Published: December 2019

O artigo investiga o perfil dos trabalhadores insatisfeitos no mercado de trabalho brasileiro nos anos de 2005 e 2015, assim como busca identificar os fatores que contribuíram para as mudanças de probabilidades de estar insatisfeito encontradas entre esses dois períodos. Para tanto, foram utilizados dados da PNAD de 2005 e 2015 e o modelo probit. Com base nessas informações, busca-se decompor as diferenças das probabilidades encontradas e verificar o quanto cada covariada contribuiu para tal desigualdade. Os resultados mostraram que trabalhadores chefes de família e negros tiveram suas probabilidades positivas para ambos os anos analisados. Já os trabalhadores formais, obtiveram probabilidades negativas para a insatisfação no emprego, assim como os trabalhadores que vivem na zona rural os quais possuem probabilidades menores do que os moradores da zona urbana de estarem insatisfeitos nos seus postos de trabalho. A diferença de probabilidade do trabalhador insatisfeito entre os anos de 2005 e 2015 é explicada principalmente por diferenças não observáveis associadas às transformações do mercado de trabalho no período.
O IMPACTO DOS CICLOS POLÍTICOS NOS RETORNOS E NA VOLATILIDADE DO IBOVESPA
Authors: Locatelli André , Lobo e Silva Carlos Eduardo , Mussi Alvim Augusto
Published: December 2019

O presente artigo tem como objetivo investigar se os ciclos políticos influenciam os retornos e a volatilidade do Ibovespa, índice da bolsa de São Paulo. Os dados utilizados serão os retornos diários do Ibovespa e os retornos diários do S&P 500, um dos principais índices do mercado acionário norte americano e que servirá para captar as mudanças do mercado acionário externo. Para calcular a influência dos ciclos políticos econômicos sobre os retornos e a volatilidade do Ibovespa foi utilizado o modelo econométrico GARCH, que tem sido amplamente utilizado em trabalhos dessa natureza, e que tem se demonstrado consistente na estimação de séries temporais. Os resultados encontrados reforçam as conclusões de estudos da literatura para diversos países: enquanto os retornos não são afetados significativamente, é possível detectar efeitos na volatilidade do índice em períodos próximos às eleições nacionais. Nossos resultados sugerem que a volatilidade mais significativa ocorre no período entre 150 e 60 dias antes do pleito e se dissipa nos últimos dois meses, quando os candidatos já estão formalmente definidos.
[ID 35476] AUTOEFICÁCIA NO ALEITAMENTO MATERNO EM ADOLESCENTES DO NORTE BRASILEIRO
Authors: Margotti Edficher , Nara Thassiana Viegas
Published: December 2019

Objetivo: Avaliar a autoeficácia em amamentar entre mães adolescentes atendidas em hospital amigo da criança em Belém. Material e Métodos: Estudo analítico descritivo, com delineamento transversal, de cunho quantitativo. Participaram adolescentes entre 13 a 19 anos de idade, que responderam um questionário socioeconômico e de antecedentes obstétricos e, aos quatro meses de pós-parto, a Breastfeeding Self-Efficacy Scale short-form. Foram incluídos: neonatos com idade gestacional acima de 36 semanas e peso ao nascer >2.500g; nascimentos sem intercorrências e que no momento da alta hospitalar, estivessem sendo amamentados exclusivamente ao peito. Resultados: Os resultados evidenciaram elevada autoeficácia em amamentar 81,66% e mostraram que as adolescentes se sentem confiantes no ato de amamentar. Conclusão: As adolescentes possuem alta eficácia na amamentação, provando que mesmo possuindo baixa faixa etária, estão cientes da importância do aleitamento materno para seus bebês. Ao fazer uso dessa escala, tem-se a oportunidade de conhecer os motivos que contribuíram para o desmame precoce.

DESCRITORES: Aleitamento materno. Autoeficácia. Adolescentes.
[ID 37205] PACIENTE CRÍTICO: SEGURANÇA EM TERAPIA TRANSFUSIONAL MEDIANTE LISTA DE VERIFICAÇÕES
Authors: Gurgel Amanda Paula , Melo Veronica Silva de , Leitão Janaina Silva , Studart Rita Monica Borges , Bonfim Isabela Melo , Barbosa Islene Victor
Published: December 2019

Objetivo: Avaliar a segurança do paciente crítico em terapia transfusional por meio de uma lista de verificações. Material e Métodos: Estudo observacional transversal, com abordagem quantitativa. A pesquisa foi realizada na Unidade Pós-operatória de Alta Complexidade (UPAC) de um hospital público terciário, localizado em Fortaleza-Ceará. As variáveis do estudo foram: idade, sexo, tipo de transplante, período de transfusão, hemocomponente transfundido, registro e horário dos sinais vitais, - Registro da quantidade de bolsas infundidas, Registro/evolução de hemovigilância, Reação transfusional, Etiqueta de identificação do hemocomponente, registro do recebimento do hemocomponente e do responsável pela transfusão. Os resultados foram organizados em tabelas no programa Word do Windows XP Profissional, interpretados e fundamentados com base na literatura pertinente à temática. Resultados: 53,6% transfusões do sexo masculino, seguido de 46,3% do sexo feminino. Hemocomponentes transfundidos: concentrado de hemácias (38,1%), plasma (33,6%), concentrado de plaquetas (15,4%), crioprecipitado (10%) e buffy coat (2,7%). Registro dos sinais vitais: temperatura 62,7%, pressão arterial: 68,2%, frequência cardíaca: 56,4% e frequência respiratória em 57,3%. Em relação ao tempo do registro dos sinais vitais, 47,3% antes do início da transfusão, 20,9% tinham registro 15 minutos após o início e 30,9% ao término.106 transfusões apresentavam registro da quantidade de bolsas infundidas. Registro de hemovigilância: 17,3%. 1 reação transfusional. Identificação do hemocomponente: 87,3%. Registro do recebimento da bolsa: 25,5%. Registro do responsável pelo procedimento: 75,5%. Conclusão: Verifica-se a necessidade de reforçar a importância dos registros por parte dos enfermeiros na unidade em que foi realizado o estudo.

DESCRITORES: Enfermagem. Transfusão sanguínea. Segurança do paciente.
[ID 45557] ESTUDO DATILOSCÓPICO ENTRE GÊMEOS MONOZIGÓTICOS PARA FINS DE IDENTIFICAÇÃO HUMANA
Authors: Gusmão Carolina Lucena Veloso , Fernandes Larissa Chaves Cardoso , Costa Gracinete Duarte da , Bento Maria Izabel Cardoso , Santiago Bianca Marques , Rabello Patrícia Moreira
Published: December 2019

Objetivo: Analisar as características datiloscópicas entre pares de gêmeos monozigóticos (GM), observando coincidências e divergências entre os irmãos e avaliando o potencial identificatório dos relevos dérmicos digitais para individualização dos mesmos. Material e Métodos: Estudo cego e transversal, quantitativo, de abordagem indutiva e observação direta extensiva. As impressões digitais foram analisadas e classificadas em tipos fundamentais (arco, presilha interna, presilha externa, verticilo e anômalo) e acidentais (anômalo, cicatriz e amputação) e, posteriormente, assinalados os pontos característicos. Resultados: Foram coletadas 46 fichas datiloscópicas, oriundas de 23 pares de GM, sendo 14 duplas pertencentes ao sexo feminino e 9 ao masculino, com idades entre 18 e 28 anos. Os dedos que apresentaram maior concordância entre os pares de GM foram os polegares, direito e esquerdo, e o anular direito, com 82,5%. Na mão direita, o padrão mais observado foi presilha externa, enquanto no membro esquerdo o tipo prevalente foi presilha interna. Conclusão: As estruturas que compõem as impressões digitais, apesar de muito semelhantes, são capazes de individualizar GM pela existência de pontos característicos individuais, auxiliando no processo de identificação humana.

DESCRITORES: Odontologia Legal. Identificação Humana. Dermatoglifia. Gêmeos Monozigóticos.
Dual quaternions and dual quaternionic curves
Authors: Dağdeviren Ali , Yüce Salim
Published: December 2019

After a brief review of the different types of quaternions, we develop a new
perspective for dual quaternions with dividing two parts. Due to this new
perspective, we will define the isotropic and nonisotropic dual quaternions.
Then we will also give the basic algebraic concepts about the dual
quaternions. Moreover, we define isotropic dual quaternionic curves and
non-isotropic dual quaternionic curves. Via these definitions we find
Serret-Frenet formulae for isotropic dual quaternionic curves. Finally, we
will use these results to derive the Serret-Frenet formulae for
non-isotropic dual quaternionic curves.
On the Sampson Laplacian
Authors: Stepanov Sergey , Tsyganok Irina , Mikes Josef
Published: December 2019

In the present paper we consider the little-known Sampson operator that is
strongly elliptic and self-adjoint second order differential operator acting
on covariant symmetric tensors on Riemannian manifolds. First of all, we
review the results on this operator. Then we consider the properties of the
Sampson operator acting on one-forms and symmetric two-tensors. We study
this operator using the analytical method, due to Bochner, of proving
vanishing theorems for the null space of a Laplace operator admitting
a Weitzenb?ck decomposition. Further we estimate operator?s lowest
eigenvalue.
Solutions of some types of soliton equations in R3
Authors: Blaga Adara
Published: December 2019

Solutions of ome types of soliton equations in the 3-dimensional Euclidean
space are given and some examples are provided.
Determination of tramadol in pharmaceutical forms and urine samples using a boron-doped diamond electrode
Authors: Keskin Ertuğrul , Allahverdiyeva Shabnam , Şeyho Esma , Yardim Yavuz
Published: December 2019

The present work describes the electroanalytical investigation and a novel voltammetric method for the cheap, fast and simple quantification of tramadol (TRH) using a boron-doped diamond electrode. TRH displayed one well-defined, irreversible and adsorption-controlled oxidation peak at about 1.58 V (vs. Ag/AgCl) in Britton?Robinson buffer (BR, 0.1 mol L-1, pH 3.0) using the cyclic voltammetry technique. The voltammetric responses of the oxidation peaks are dependent on pH and their sensitivity was significantly enhanced in the presence of surfactant media (sodium dodecyl sulphate, SDS). Under the optimized experiment conditions, employing the square-wave stripping mode, it was found that there was an excellent correlation between oxidation peak current and the TRH concentration in the range 0.25 to 50.0 ?g mL-1 (8.34?10-7?1.67?10-4 mol L-1), with a detection limit of 0.072 ?g mL-1 (2.40?10-7 mol L-1) in 0.1 mol L-1 BR buffer (pH 3.0) solution comprising 8?10-4 mol L-1 SDS at 1.52 V (after 30 s accumulation at open-circuit conditions). The developed approach could be used for the quantification of TRH in pharmaceutical formulations and spiked human urine samples with acceptable recoveries.