bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluating the Effectiveness of an Intervention Integrating Technology and In-Person Sexual Health Education for Adolescents (In the Know): Protocol for a Cluster Randomized Controlled Trial (Preprint)
Authors: Decker Martha J. , Gutmann-Gonzalez Abigail , Price Melisa , Romero Julio , Sheoran Bhupendra , Yarger Jennifer
Published: February 2020

BACKGROUND

Access to a smartphone is nearly universal among American adolescents, and most of them have used the internet to seek health information. Integrating digital technologies into health program delivery may expand opportunities for youth to receive important health information, yet there are few rigorous studies assessing the effectiveness of this type of intervention.

OBJECTIVE

The purpose of this study is to assess the effectiveness of In the Know (ITK), a program integrating in-person and technology-based sexual health education for underserved adolescents.

METHODS

Youth were engaged in the development of the intervention, including the design of the digital technology and the curriculum content. The intervention focuses on 3 main areas: sexual health and contraceptive use, healthy relationships, and educational and career success. It includes an in-person, classroom component, along with a web-based component to complement and reinforce key content. A cluster randomized controlled trial is in progress among adolescents aged 13-19 years living in Fresno County, California. It is designed to examine the differences in self-reported health and behavioral outcomes among youth in the intervention and control groups at 3 and 9 months. Primary outcomes are condom and contraceptive use or no sex in the past 3 months and use of any clinical health services in the past 3 months. Secondary outcomes include the number of sexual partners in the past 3 months and knowledge of local clinical sexual health services. We will use mixed-effects linear and logistic regression models to assess differences between the intervention and control groups.

RESULTS

Trial enrollment began in October 2017 and ended in March 2020 with a total of 1260 participants. The mean age of the participants is 15.73 (SD 1.83) years, and 69.98% (867/1239) of the participants report being Hispanic or Latino. Study results will be available in 2021.

CONCLUSIONS

ITK has the potential to improve contraceptive and clinic use among underserved youth. This trial will inform future youth-focused health interventions that are considering incorporating technology.

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/18060
Assessing the Impact of Person-level Matching Algorithms to Identify Risk of Fatal Opioid Overdose Across Disparate Datasets: Retrospective Analysis (Preprint)
Authors: Ferris Lindsey , Weiner Jonathan P. , Saloner Brendan , Kharrazi Hadi
Published: February 2020

BACKGROUND

The opioid epidemic in the United States has precipitated a need for public health agencies to better understand risk factors associated with fatal overdoses. Matching person-level information stored in public health, medical, and human services datasets can enhance the understanding of opioid overdose risk factors and interventions. A major impediment to using datasets from separate agencies, has been the lack of a cross-organization unique identifier. Although different matching techniques that leverage patient demographic information can be used, the impact of using a particular matching approach is not well understood.

OBJECTIVE

This study compares the impact of using probabilistic versus deterministic matching algorithms to link disparate datasets together for identifying persons at risk of a fatal overdose.

METHODS

This study used statewide prescription drug monitoring program (PDMP), arrest, and mortality data matched at the person-level using a probabilistic and two deterministic matching algorithms. Impact of matching was assessed by comparing the prevalence of key risk indicators, the outcome, and performance of a multivariate logistic regression for fatal overdose using the combined datasets.

RESULTS

The probabilistically matched population had the highest degree of matching within the PDMP data and with arrest and mortality data, resulting in the highest prevalence of high-risk indicators and the outcome. Model performance using area under the curve (AUC) was comparable across the algorithms (probabilistic: 0.847; deterministic-basic: 0.854; deterministic+zip: 0.826), but demonstrated tradeoffs between sensitivity and specificity.

CONCLUSIONS

The probabilistic algorithm was more successful in linking patients with PDMP data with death and arrest data, resulting in a larger at-risk population. However, deterministic-basic matching may be a suitable option for understanding high-level risk based on the model’s area under the curve (0.854). The clinical use case should be considered when selecting a matching approach, as probabilistic algorithms can be more resource-intensive and costly to maintain compared with deterministic algorithms.
Evaluating the Effects of a Mobile Health App on Reducing Patient Care Needs and Improving Quality of Life After Oral Cancer Surgery: Quasiexperimental Study (Preprint)
Authors: Wang Tze-Fang , Huang Rou-Chen , Yang Su-Chen , Chou Chyuan , Chen Lee-Chen
Published: February 2020

BACKGROUND

Intervention with a mobile Health (mHealth) app can improve the efficacy of early detection of oral cancer and the outcomes for patients taking oral anticancer medications. The quality of life of oral cancer patients is significantly reduced within three months after surgery; also, their needs for nursing care and health information increase, mainly due to side effects and associated psychological problems.

OBJECTIVE

This study aimed to evaluate changes in the care needs and quality of life of patients with oral cancer after receiving the intervention of a newly developed mHealth app.

METHODS

After surgery, oral cancer patients were divided into an experimental group (n=50) who received the mHealth app intervention and a control group (n=50) who received routine health care and instruction. After 3 months of intervention, survey questionnaires were used to assess the patients’ quality of life, nursing care needs, and acceptance of the mHealth app.

RESULTS

The physiological care needs were significantly decreased in the experimental group compared with the control group (P<.05). Although the differences were not statistically significant, the psychological needs, communication needs, and care support needs all improved after the mHealth app intervention. The overall improvement in quality of life was higher in the experimental group than in the control group (–7.24 vs –4.36). In terms of intention to use, perceived usefulness, and perceived ease of use, the acceptability scores of the mHealth app were significantly increased after 3 months of intervention (P<.05).

CONCLUSIONS

Compared with routine health care and instruction, for patients after surgery, the education/information intervention using the mHealth app significantly reduced their nursing care needs, improved their quality of life, and increased their acceptance of using an mHealth app on a mobile device. These findings can provide a theoretical basis for future health care app design and improvement. This study suggests that an mHealth app should be incorporated into the routine care of oral cancer patients to provide medical information quickly and improve their self-management abilities, thereby reducing the patients’ need for physiological care and improving their quality of life.

CLINICALTRIAL

ClinicalTrials.gov NCT04049968; https://www.clinicaltrials.gov/ct2/show/NCT04049968
Подростковая агрессия, причины и факторы риска
Authors: Denisova M.F. , Musyca N.M. , Shkiryak-Nizhnik Z.A.
Published: February 2020

Актуальность. Здоровье детей можно охарактеризовать как состояние жизнедеятельности, соответствующее биологическому возрасту ребенка, гармонии функционирования систем организма и его взаимоотношений с окружающей средой, единство психомоторных и интеллектуальных характеристик. С каждым годом растет число несовершеннолетних с агрессивным поведением, проявляющимся в асоциальных действиях — нарушении общественного порядка, хулиганстве, вандализме. Как серьезный фактор риска здоровья подростков рассматриваются изменения в структуре питания. Нерациональное питание с точки зрения сегодняшних реалий может быть не только фактором формирования у детей анорексии и булимии, но и благоприятной почвой для агрессивного поведения. Целью исследования был поиск взаимосвязей между агрессивным поведением подростков и возможными факторами его развития. Материалы и методы. Информативной базой для проведения исследования стала международная программа ELSPAC (European Longitudinal Study of Parenthood And Childhood — Европейское долгосрочное наблюдение за отцовством и детством), ее украинский фрагмент «Семья и дети Украины». Исследование проводилось на основе анализа базы данных для двух отдельно выделенных групп (группа подростков, которые имеют проявления агрессивного поведения; группа подростков без проявлений агрессии). Была сформирована релятивная база данных 864 подростков в возрасте 15–18 лет. Результаты. Проанализирован ряд показателей пищевого поведения и выделены факторы риска развития агрессии. Выявлены достоверно значимые показатели разницы пищевого поведения подростков агрессивной и неагрессивной групп. Так, подростки агрессивной группы, даже получив сведения о нарушении привычек питания, не шли к врачу или пренебрегали его советами. Характерным для них было неконтролируемое употребление пищи, отказ от употребления мяса птицы, рыбы, яиц, частые перекусы едой уличного приготовления, употребление энергетических напитков два или более раз в неделю. Среди вегетарианцев подавляющее большинство — это подростки агрессивной группы. Подростки неагрессивной группы достоверно чаще имели правильный режим питания — большинство из них не имели неконтролируемой тяги к пище, три раза в день употребляли горячую пищу, не отказывались от употребления мяса птицы, рыбы, яиц, никогда или редко пользовались пищей быстрого уличного приготовления, почти не посещали заведения быстрого питания.
Можливості використання експрес-тестів маркерної лабораторної діагностики в зонах ліквідації медико-санітарних наслідків надзвичайних ситуацій мирного й воєнного характеру
Authors: Kochin I.V. , Khandoga E.V. , Ostapenko A.А.
Published: February 2020

Особливу актуальність набуває подальший технологічний та організаційний розвиток використання можливостей новітньої екстреної тестової маркерної лабораторної діагностики в удосконаленні організації та наданні екстреної медичної допомоги постраждалим при надзвичайних ситуаціях мирного й воєнного характеру, що обґрунтовує мету дослідження — визначення нагальної потреби забезпечення сучасним діагностичним лабораторним обладнанням цивільних і військових медичних служб. Досліджена та проаналізована вітчизняна й іноземна фахова медична наукова література, нормативно-правова база з організації екстреної медичної допомоги та використання сучасного діагностичного лабораторного обладнання маркерної лабораторної експрес-діагностики point of care технології. Дослідження проводились методами контент-аналізу джерел інформації та узагальнення спостережень. Узагальнення світового досвіду використання різноманітних експрес-тестів маркерної лабораторної діагностики дозволяє дослідити і пов’язати їх з різними станами організму людини, використати в удосконаленні організації та наданні екстреної медичної допомоги постраждалим і пораненим з цивільного населення та військовослужбовців у поліпшенні системи лікувально-евакуаційного забезпечення в дошпитальному і шпитальному періодах.
Гендерночутлива оцінка якості життя у дітей з катетеризованим сечовим міхуром
Authors: Sadova-Chuba Z.T.
Published: February 2020

Мета: гендерночутливий аналіз якості життя у дітей із катетеризованим сечовим міхуром. Матеріали та методи. Відібрано 60 пацієнтів, які лікувались у відділенні інтенсивної терапії КНП ЛОДКЛ «ОХМАТДИТ», віком 8–12 років. Пацієнтів було розподілено на групи: 1-ша — хлопчики з сечовим катетером (n = 20); 2-га — хлопчики без сечового катетера (n = 10); 3-тя — дівчатка з катетеризованим сечовим міхуром (n = 20); 4-та — дівчатка без сечового катетера (n = 10). Для оцінки якості життя використано перекладений та адаптований опитувальник для визначення якості життя у дітей віком 8–12 років Pediatric Quality of Life Inventory (2014). Резюме. Найнижчий сумарний бал за якістю життя мала група 1 — 24,1 ± 3,7 (р ≤ 0,05). У трьох інших групах сумарний бал з якості життя, за результатами опитувальника, був вищим: група 2 — 30,1 ± 8,3; група 3 — 28,3 ± 8,0; група 4 — 29,9 ± 8,1 (р ≥ 0,05). Згідно з аналізом складових психологічного стану дітей із катетеризованим сечовим міхуром, помітно нижча якість життя за емоційним функціонуванням та шкільною діяльністю була у групі 1 (13,3 ± 3,8 та 14,0 ± 3,9 відповідно; р ≤ 0,05) порівняно з іншими трьома групами. Висновки. Наявність сечового катетера більшою мірою знижує якість життя у хлопчиків, аніж у дівчаток, внаслідок погіршення психологічного стану.
Вплив гіпотиреозу на добовий профіль артеріального тиску у хворих на артеріальну гіпертензію за результатами амбулаторного моніторування артеріального тиску
Authors: Tseluyko V.Y. , Korchagina D.A.
Published: February 2020

Мета: вивчити особливості добового профілю артеріального тиску у хворих на артеріальну гіпертензію (АГ) у поєднанні з гіпотиреозом за даними амбулаторного моніторування артеріального тиску. Матеріали та методи. У дослідження ввійшли 50 хворих на АГ із супутнім гіпотиреозом. Залежно від рівня тиреотропного гормону (ТТГ) в сироватці крові хворі були розподілені на дві групи по 25 пацієнтів із компенсованим (І група) і декомпенсованим гіпотиреозом (ІІ група). Критерієм компенсації вважали рівень ТТГ 4,4 мМО/л. Контрольну групу становили 30 пацієнтів з АГ, у яких була виключена дисфукція щитоподібної залози. Виконано співставлення основних показників амбулаторного моніторування артеріального тиску залежно від компенсації гіпотиреозу, оцінка добового індексу систолічного артеріального тиску. Проведений регресійний аналіз для виявлення зв’язку клініко-анамнестичних чинників і показників з розвитком діастолічної дисфункції за Е/А. Результати. За результатами оцінки показників амбулаторного моніторування артеріального тиску встановлено, що хворі зі зниженою функцією щитоподібної залози мали більш значущі зміни добового профілю артеріального тиску, тоді як середні значення офісного артеріального тиску не мали вірогідних відмінностей між групами. Для хворих з артеріальною гіпертензією і супутнім гіпотиреозом характерне недостатнє зниження артеріального тиску в нічний час, про що свідчить більш питома вага пацієнтів з рівнем добового індексу менше 10 серед цих пацієнтів (р = 0,001). Згідно з результатами ROC-аналізу, тривалість замісної гормональної терапії > 6 років дозволяє прогнозувати зниження добового індексу систолічного артеріального тиску з чутливістю 82,1 % і специфічністю 57,1 %. При зниженні добового індексу (9,12) у хворих на артеріальну гіпертензію у поєднанні з гіпотиреозом частіше можливий розвиток діастолічної дисфункції (показник Е/А), про що свідчать результати ROC-аналізу з чутливістю 86,4 % та специфічністю 46,2 %. Висновки. Таким чином, хворим з артеріальною гіпертензією і супутнім гіпотиреозом показано проведення амбулаторного моніторування артеріального тиску для виявлення нічної гіпертензії і корекції антигіпертензивної терапії. З урахуванням отриманих результатів антигіпертензивна терапія має бути спрямована не лише на зниження артеріального тиску, але й на нормалізацію добового індексу.
Використання проби з подвійною локальною гіпоксією верхньої кінцівки у хворих на облітеруючий атеросклероз судин нижніх кінцівок
Authors: Tverdovsky I.V.
Published: February 2020

Було проведене вивчення реакції системи гемостазу у здорових добровольців (n = 30) і хворих на облітеруючий атеросклероз (ОА) артерій нижніх кінцівок (n = 90) на проведення функціональної проби у формі визначення реакції на подвійну локальну гіпоксію верхньої кінцівки з використанням низькочастотної п’єзоелектричної тромбоеластографії (НПТЕГ). Метою проведення цієї проби є оцінка реакції системи гемостазу на створення в одній ділянці судинного русла вірховської тріади тромбоутворення: а) зупинення кровотоку; б) ушкодження судинної стінки; в) зміна реологізму крові. Головне завдання даної функціональної проби складається в появі можливості визначення меж гемостазу, характеру та тривалості пристосувальних і компенсаторних реакцій. Проба з подвійною локальною гіпоксією верхньої кінцівки може бути використана як тест-подразник для хворих на облітеруючий атеросклероз артерій нижніх кінцівок з метою оцінки резервних можливостей системи гемостазу. Залежно від характеру реакції тромбоцитарно-судинного, коагуляційного компонентів гемостазу і фібринолізу на вплив тесту-подразника можливі два типи реакції системи регуляції агрегатного стану крові у здорових осіб: компенсований і субкомпенсований. При патології системи гемостазу можуть визначатися такі типи реакції, як декомпенсований і виснажений. При проведенні ішемічної проби у хворих з ОА визначали декомпенсований тип реакції на пробу з локальною гіпоксією верхньої кінцівки. При базовій підвищеній агрегації тромбоцитів, гіперкоагуляції, пригніченні антикоагулянтної системи та фібринолізу після виконання ішемічної проби зазначені порушення в системі гемостазу ще більше прогресують: підвищується агрегація тромбоцитів, посилюється робота прокоагулянтної ланки, зростає пригнічення антикоагулянтної системи та фібринолізу. Враховуючи дані зміни в усіх ланках системи гемостазу, які нам демонструють показники НПТЕГ у відповідь на пробу, ми можемо рекомендувати використання антикоагулянтної терапії у даної категорії хворих як один із компонентів передопераційної підготовки.
Обращение главного редактора
Authors: Nikonov V.V.
Published: February 2020

No abstract
Сучасний погляд на остеопороз в умовах неврологічної патології (огляд літератури)
Authors: Bystrytska M.A.
Published: February 2020

У статті наведені сучасні дані літератури щодо вивчення впливу патології нервової системи на метаболізм кісткової тканини. Серед захворювань нервової системи доведено впливають на кісткову тканину й збільшують ризик розвитку остеопорозу й переломів епілепсія, розсіяний склероз, інсульт, травма хребта й спинного мозку, хвороба Паркінсона та м’язова дистрофія. Продовжується вивчення механізмів формування остеопорозу у цієї категорії хворих, з’являються нові погляди на причини підвищеного ризику переломів, а отже, й нові напрямки профілактики та лікування.
Analisis Perencanaan dan Ketersediaan Obat di Kabupaten dan Kota Provinsi Jawa Timur
Authors: Suryagama Digdo , Satibi Satibi , Sumarni Sumarni
Published: February 2020

The problem of drug availability always occurs in District/Municipality every year. Research related to drug management, especially those related to the evaluation of drug availability and the value of damaged/expired drugs, has been carried out in the last ten years. Almost all the research found problems with the availability of the drugs. The Director General of Pharmacy and Medical Devices reported that the percentage of the availability of National Medicines in East Java in 2017 had reached 96.55%, but had not yet described the condition of the availability of medicines in real terms because the calculation did not use data on drug quantity. This study aims to explain the real conditions for the availability of 17 items of national indicator drugs in East Java in 2017, as well as identify problems and information about management that has been running in 2017. This research is an observational research that is descriptive quantitative. The research instrument was in the form of data collection sheets for the availability of 17 drug items in 2017 and interview guidelines. The results showed that the availability of drugs was in excess conditions with an average of 22.5 months. Drug programs held directly by the Central Government often experience excess inventory at the Regency/City Pharmacy Department level but the average percentage of drugs damaged/expired is still in a fairly good range (0-3%). It can be concluded that the availability of drugs in East Java Province in 2017 is influenced by the planning system, procurement system, availability of drugs at the provider level (supply), availability of management information systems and respective regional policies.
Hubungan Penyakit Diabetes Melitus dan Penggunaan Antidiabetes terhadap Rekurensi pada Pasien Kanker Payudara
Authors: Wulandari Fitri , Widayati Kartika , Rahmawati Fita
Published: February 2020

Breast cancer is the cancer with the most prevalence of 43.3% and the mortality rate that reaches 12.9%. The prognosis of breast cancer can be affected by diabetes mellitus (DM), so that efforts to control DM through antidiabetic therapy are very necessary, but antidiabetic therapy is also reported to be associated with the prognosis of breast cancer. The purpose of this study was to determine the relationship of diabetes and antidiabetic use to recurrence in breast cancer patients. This study used a retrospective cohort design, involving 176 female non-metastatic breast cancer patients who received chemotherapy, consisting of 88 patients with DM and 88 non-DM patients. The exposures in the study were diabetes mellitus and the types of antidiabetic drugs (metformin and non metformin based therapy), while the study output was the recurrence of breast cancer. The research data was obtained from the patient’s medical records at RSUP Dr. Sardjito Yogyakarta. Research analysis used Chi-square, Kaplan Meier method and Cox-regression to estimate Hazard Ratio with 95% confidence interval. The results showed DM in breast cancer patients was associated with increased the risk of recurrence (HR 2,458; 95% CI 1,571-3,846, log rank test P=0,000), while the use of antidiabetic types (metformin and nonmetformin) to control DM in breast cancer patients was not associated with the risk of recurrence (HR 1.391; 95% CI 0.816 - 2.370, log rank test P=0.210). Further research is warranted by monitoring blood glucose levels regularly.
Analysis of the Applicability of “the Spiral of Silence” in Weibo
Authors: Jia Chaoran
Published: February 2020

“The spiral of silence” theory was first funded by Professor Elizabeth Noelle Neumann in 1972. This theory indicates that, if a person feels that his opinion is belonging to minority, he is less likely to express it, because he is afraid of being retaliated or isolated by majority. This theory assumes that people are always estimating what the public opinion is, and they often judge it through the media. The theory also assumes that we have an inherent fear of isolation and that we know what perspectives can lead us to isolation by majority. This theory also explains why there are always such minority groups in the society and they dare to raise different opinions. With the flash development of the Internet, more and more self media have broken the old pattern of mass media as the information publisher. So it is a big question whether “the spiral of silence” theory is still applicable to the Internet environment. This paper, from the perspective of the basic hypothesis and core theory of “the spiral of silence”, focuses on whether the theory is applicable to the communicative behavior in We-Media.
EFFECTS OF NORDIC WALKING ON BODY COMPOSITION AND FUNCTIONAL ABILITY: A CASE STUDY
Authors: Ivanović Jelena , Gajević Aco , Gajić Ivanka , Atanasov Dragan
Published: February 2020

The main goal of this research is to determine effect of the ten–weeks-long programmed Nordic Walking (NW) exercising to body composition and functional ability on 68 old year woman. For the evaluation of body composition, the following variables were obtained using the Bioelectric Impedance: Body mass, Body Mass Index, Body Fat Mass, Percentage of the Body Fat Mass and Fat Free Mass. For the evaluation of the functional capability, the UKK 2 km test was used and the following variables were followed: Maximal oxygen uptake and Fitness index. The program was based on aerobic exercise, with the aim of adjusting the body to physical exercise and training to improve muscle strength. The program consisted of a combination of NW and exercises for warming up, tightening and strengthening of the complete musculature. The results showed significant improvements in all observed characteristics, especially in functional parameters. Maximal oxygen uptake and Fitness index, in the end, compared to the initial measurement, improved by almost 61% (from 17.91 ml/kg/min to 29.62 ml/kg/min) and 63% (from 68 at 109). In addition, the results showed that the trend of changes in all observed characteristics has a significant increase at the level of 89.88% (for Fat free mass) to 98.73% (Fitness index). Continued application of the proposed program could contribute to the improvement of the examined variables related to body composition and functional capacity, which can result in better health status of the target population.
REGRESSION ALGORITHMS IN ASSESSING THE IMPACT OF MORPHOLOGICAL AND MOTOR CHARACTERISTICS ON 60-M SPRINT
Authors: Filipović Milica , Stanković Veroljub , Čoh Milan , Vitošević Biljana , Radosavljević Dragana
Published: February 2020

The aim of the present study was to identify the relationship between morphological parameters and motor skills that are important for sprint performance in children aged 8 to 16 years divided into four age groups (U10, U12, U14, U16) in both genders. The sample consisted of two hundred eighty one participant who trained sprinting in various athletic clubs. A prediction set of twenty-five variables for assessing morphological characteristics and motor skills was applied, and the criterion variable was a sprint at 60m. Using multiple correlation, it has been established that a large number of morphological characteristics are statistically significant positive correlation with the sprint, especially the longitudinal variables, while the variables of skinfolds showed a low negative statistical significance in relation to the given criterion. In the field of motor skills, the highest number of positive statistically significant correlations were found in the tests of explosive power of the upper and lower extremities, agility test and horizontal and vertical jump tests. In order to determine which morphological features and motor skills should be applied in sprint running training, we tested related attributes using different algorithms for data mining (LR, M5, KNN, SVM, MLP, RBF). The results suggests that the predictors that we use can continue to be applied with high reliability in assessing sprint performance, but also in the monitoring of the training process in order to profile the better sprint achievements.
AKUSTIČKI METAMATERIJALI: PREGLED VIBRACIONIH KARAKTERISTIKA
Authors: Cveticanin Livija , Cveticanin Dragan
Published: February 2020

In the paper the theoretical consideration of the acoustic metamaterials is given. Metamaterials, which are usually composite, are artificial materials whose properties differ from those observed in nature or in the constituent materials. Metamaterials which are suitable for acoustic wave absorption are presented. Acoustic absorber is a beam made of solid material connected with spring-mass subunits. The purpose of the subunits is to give a band gap where some frequencies of acoustic wave are stopped. Mathematical models for various types of connection of subunits in the metamaterial and absorber are discussed. Based on the analogy between electromagnetic and acoustic waves the concept of negative effective mass is introduced as a basic principle for modeling. Acoustic metamaterial beams based on one, two or multi-frequency vibration absorbers are discussed. Depending on connection of absorbers in the beam, the structure may absorb wave in one-direction (for example the longitudinal one) or waves in two directions (transversal and longitudinal). In the paper an overview of mathematical models and suggestions for further investigation are given.
AIR POLLUTION AND THE FILTRATION PROCESSING SYSTEMS FOR THE BITUMINOUS MATERIAL PLANTS
Authors: Jovanović Dragan , Raos Miomir , Jovanović Milena , Medenica Milena
Published: February 2020

It is known that particulate matters of different granulations are one of the most important air and environmental pollutants, in general. This paper presents a prototype system for filtering particulate matter from extinguishing gases of a bitumen preparation plant using a "jet pulse" method for filter bags cleaning. For such type of filter plant, due to technological reasons, there is the need to create a shock wave which is required for the cleaning of the filter bags. The shock wave is generated by electromagnetic valves, whereas the tactile of the valve is determined by special controller depending on the type of filter, bags and air pollution. The result obtained through the use of special types of controllers allows the life span of the electric fan and the prevention of their overheating and damage.
Examination of the polyphenol content and bioactivities of Prunus spinosa L. fruit extracts
Authors: Velickovic Ivona , Zizak Zeljko , Rajcevic Nemanja , Ivanov Marija , Sokovic Marina , Marin Petar , Grujic Slavica
Published: February 2020

We investigated the total phenolic and flavonoid contents and the anthocyanin profiles in aqueous, ethanol and acetone extracts of Prunus spinosa (Rosaceae) fruit, and their antioxidant, antibacterial, antifungal, antidiabetic and antitumor properties. The contribution of polyphenol contents to the bioactivity of the extracts was calculated and observed through Pearson?s coefficient of correlation. The acetone extract was the richest in phenols and anthocyanins and the ethanol extract in flavonoids. Cyanidin was the most abundant anthocyanin compound in all examined extracts. The ethanol extract showed the most promising antioxidant activity in DPPH, ABTS and FRAP assays. Tested bacteria were more affected by the ethanol than by the aqueous extract. Both the ethanol and aqueous extracts exhibited potential antidiabetic effects, observed as inhibition of ?-amylase and ?-glucosidase, enzymes linked with diabetes mellitus type II. The ethanol extract was a potent ?-glucosidase-inhibitor with a significantly lower IC50 value than the positive control, glucobay, used to treat diabetes mellitus type II. Neither the ethanol nor the aqueous extracts had any effects on tested human malignant cell lines. Our results indicate that the ethanol extract showed the most pronounced in vitro antioxidant and antimicrobial effects, and a potential antidiabetic activity, which can be ascribed to its high flavonoid content. Our results indicate that research of compounds, particularly of flavonoids present in the ethanol extract and their anti-diabetic properties should be examined further.
Genetic advance and regression analysis in sunflower
Authors: Jockovic Milan , Jocic Sinisa , Prodanovic Slaven , Cvejic Sandra , Jockovic Jelena , Radanovic Aleksandra , Jockovic Bojan
Published: February 2020

The knowledge about the magnitude and nature of variability that is present
in a breeding population is an important prerequisite for designing
efficient breeding programme in order to improve the yield potential of
genotypes. The objective of this research was to evaluate heritability and
genetic advance of important quantitative traits in new crosses of sunflower
as well as to evaluate ratio of dominant and recessive genes in parental
genotypes. The plant material selected for this research consisted of 6
sunflower genotypes, which according to literary data possess important
characteristics for the production of sunflower. According to presented
results there is significant variability of evaluated quantitative traits.
Phenotypic variance was higher than genotypic demonstrating strong
environment effect in expression of traits. The broad sense heritability was
found very high for plant height (83.25%), high for 1000 seed weight
(69.33%), moderate for seed yield/plant (46.53%) and head diameter (56.89%),
while low for oil content (29.35%). Genetic advance expressed as a
percentage of the mean ranged between 2.23% and 19.96%. Placement of array
points displayed that the highest frequency of dominant genes for seed
yield/plant, 1000 seed weight and head diameter was found in parental
genotype Rodnik. Position of expected line of regression pointed over
dominance in inheritance for seed yield/plant, oil content and head
diameter, while for 1000 seed weight and plant height additive gene action
played role in inheritance suggesting that selection in early generations
for these traits will be effective. By testing the coefficients of
regression interallelic interaction was not determined.
Experimental investigation of geometrical effect on flow and heat transfer performance of lamilloy cooling structure
Authors: Zhang Bo , Lin Libing , Zhang Naru , Xue Shuangsong , Ji Honghu
Published: February 2020

Effect of film hole diameter to discharge coefficients and film cooling effectiveness of the lamilloy were experimentally investigated at the blowing ratios ranging from 0.6 to 2.5. Generally, the cooling effectiveness on the test surface is increased with the film hole diameters and blowing ratios increasing, and the variation tendency along the streamwise through the centerline of film holes also keeps consistent. In the upstream, all configurations have a relatively lower cooling effectiveness, however, with the flows to the downstream, cooling effectiveness grows gradually, and the peak values of effectiveness appeared periodically, the position matches the film hole positions. Besides, between the film holes, fluctuation exists simultaneously. By comparison, the cooling effectiveness and discharge coefficients are both increased with the blowing ratio with same film hole diameters, Moreover, under the same blowing ratios, the cooling effectiveness and discharge coefficients are getting higher when hole diameters increase.
Profil Kaydırmalı Silindirik Evolvent Dişli Çarkların Matematik Modellenmesi
Authors: FETVACI Mahmut
Published: February 2020

Bu çalışmada kremayer takımla imal edilen evolvent profilli
dişli çark mekanizmalarının modellenmesi ele alınmıştır. Dişli teorisi ve
imalat metodundan hareketle profil kaydırmalı pinyon ve çarkın tam matematik
modeli verilmiştir. Asimetrik diş profile de göz önüne alınmıştır. Bir
bilgisayar programı geliştirilerek profil kaydırmanın imal edilen dişli
geometrisindeki etkileri incelenmiştir. Sayısal uygulamalar matematik modelin
ve programlamanın doğrulunuğu ve geçerliliğini göstermiştir.
Selection of Excitation Operating Points of 10 MW HTS Exciting Double Stator Direct-Drive Wind Generators Having Single and Double Polarity Inner Stator
Authors: CHENG Ming , NİNG Xinfu , ZHU Xinkai , WANG Yubin
Published: February 2020

The high temperature superconducting (HTS) exciting double stator direct-drive wind generator (HTS-DSDDG) is a promising approach for offshore wind generation, due to the fact that double-stator structure is employed to simultaneously realize stationary seal of the cooling system and brushless of current transfer. In this paper, two kinds of placement strategies of HTS coils are proposed, denoted as single-polarity excitation and double-polarity excitation, respectively. Furthermore, the relationship between the consumption of HTS wires and the volume of the single-/double-polarity HTS-DSDDGs is quantitatively investigated to determine the excitation operating points of HTS coils. Since the different placement strategies of HTS coils will lead to differences of the excitation operating points, as well as differences of generator size and HTS wires consumption, the single-/double-polarity HTS-DSDDGs are compared in terms of the electromagnetic performance, the weight and the material cost. Finally, the conclusion is drawn that the 10 MW double-polarity HTS-DSDDG is lighter and lower cost than the single-polarity one.
Derin Öğrenme Tabanlı Model ile Bir Olayın Sonraki Olma Zamanının Tahmini
Authors: UTKU Anıl , AKCAYOL Muhammet Ali
Published: February 2020

Bazı olayların olmadan önce olma zamanının
tahmin edilebilmesine yönelik çalışmalar uzun yıllardır devam etmektedir.
Böylelikle olay ortaya çıktığında meydana gelecek zararı minimuma indirmek veya
elde edilecek faydayı maksimum yapmak amaçlanır. Bir müşterinin sonraki
davranışının tahmini, doğal afetlerin sonraki olma zamanının tahmini, belirli
bir zaman aralığında gelecek talep sayısının tahmini gibi çok farklı alanlarda
sonraki olayların tahminine yönelik çalışmalar giderek artmaktadır. Ancak,
literatürde suçların ve acil çağrıların meydana gelmeden önce sonraki olma
zamanının ve olay türünün tahminine yönelik başarılı sonuç veren bir çalışma bulunmamaktadır.
Suç analizi, tehdit altındaki bölgelerin güvenliğini sağlamayı, suç işlenme
oranını azaltmayı ve kolluk kuvveti gücünden tasarruf etmeyi amaçlayan bir
araştırma alanıdır. Suçun işlendikten kısa süre sonra çözümlenmesine yönelik
çalışmalarda güncel teknolojilerin kullanımıyla yüksek başarı elde
edilmektedir. Benzer şekilde acil çağrı analizi ile çağrılara yanıt süresi
kısaltılmakta ve kaynak kullanımı optimize edilmektedir. Bu çalışmada, suç ve
acil çağrı analizine yönelik derin öğrenme tabanlı bir tahmin modeli
geliştirilmiştir. Geliştirilen model ile suç işlenmeden önce ve acil çağrı
gelmeden önce bir sonraki olma zamanı tahmin edilmektedir. Geliştirilen model
ile elde edilen sonuçlar, istatistiksel zaman serisi tahminleme yöntemlerinden
olan ARIMA ile kapsamlı bir şekilde karşılaştırılmıştır. Deneysel sonuçlar,
geliştirilen derin öğrenme tabanlı modelin ileriye dönük zaman tahmininde
ARIMA’dan daha başarılı olduğunu göstermiştir.
Preparation of Bauxite/Deionized Water Nanofluid and Experimental Investigation of Its Thermophysical Properties
Authors: Y. AYDIN Duygu , GÜRÜ Metin , SÖZEN Adnan
Published: February 2020

In this study, bauxite/deionized water nanofluid was
prepared by two-step method and its thermopyhsical properties were experimentally
investigated. Bauxite was milled by high-energy spex-type ball milling attritor.
Bauxite nanoparticles with a size of 38 nm (2% by weight) and Sodium Dodecyl
Benzene Sulfonate (0.5% by weight) were doped into the deionized water while
preparing the bauxite nanofluid. Ultrasonication was applied for three hours to
obtain stable colloidal
dispersions of nanoparticles. It has been seen that the thermal characteristics
of bauxite nanofluid was better than that of deionized water. The
bauxite nanofluid has the lower surface tension and smaller contact angle than
that of base fluid. However, the thermal
conductivity and the specific heat of bauxite nanofluid increased by 8.47% and
4.4% compared to deionized water, respectively.
PENGELOLAAN ADMINISTRASI KEUANGAN PROGRAM ALOKASI DANA DESA (ADD) DI KECAMATAN PAMENGPEUK KABUPATEN GARUT
Authors: Kania Ikeu , Ulumudin Aceng , Akbar Gugun Geusan
Published: February 2020

Latar belakang penelitian ini diawali dari masalah yang dihadapi oleh aparatur desa dalam mengelola dana desa. Adapun tujuannya adalah untuk mengevaluasi pengelolaan administrasi keuangan desa di Kecamatan Pamengpeuk Kabupaten Garut. Metode penelitian yang digunakan melalui pendekatan kualitatif dengan studi kasus. Pengumpulan data dilakukan melalui wawancara mendalam dengan informan-informan kunci secara purposive seperti kepala desa, tim pelaksana ADD, anggota BPD dan tokoh masyarakat di desa yang tersebar di Wilayah Kecamatan Pamengpeuk Kabupaten Garut. Hasil penelitian diharapkan dapat memberikan kontribusi berupa sumbangan pemikiran bagi aparatur desa untuk meningkatkan kemampuan dalam melaksanakan tugasnya mengelola administrasi keuangan desa.
Perdagangan Internasional sebagai Aspek Kedua dan Ketiga dari Power
Authors: Sunu Anton Pratomo
Published: February 2020

Joseph S. Nye Jr. dalam bukunya “The Future of Power” pada tahun 2007, menjelaskan mengenai 3 aspek dari power. Artikel ini menjelaskan bagaimana institusi dan rejim perdagangan internasional merupakan perwujudan dari aspek kedua dan ketiga dari power menurut Nye. Pelaksanaan perundingan perjanjian perdagangan internasional seringkali membawa kepentingan negara-negara industri maju. Negara-negara berkembang lebih banyak dalam posisi menerima artikel-artikel yang diajukan oleh negara-negara industri maju dalam perundingan. Negara-negara berkembang setelah menyetujui dan meratifikasi perjanjian perdagangan internasional seringkali menjadi memiliki ruang gerak yang dibatasi oleh perjanjian perdagangan internasional tersebut, karena harus memenuhi komitmen yang diberikan dalam perjanjian perdagangan internasional tersebut. Bagian pertama artikel ini akan menjelaskan tiga aspek dari power oleh Nye dengan penekanan pada aspek kedua dan ketiga. Bagian kedua akan dijelaskan bagaimana relasi power dalam perdagangan internasional dan institusi internasional pada umumnya. Pada bagian terakhir akan menjelaskan bagaimana perdagangan internasional merupakan perwujudan aspek kedua dan ketiga dari power. Sehingga negara-negara berkembang harus berhati-hati dalam melakukan perundingan perjanjian kerjasama perdagangan bebas, dan tetap mengutamakan kepentingan nasional tanpa melanggar aturan-aturan internasional yang berlaku.
Model Pengembangan Kualitas Hubungan Students College Exchange Berbasis Public Relations Evaluation
Authors: Nuraryo Imam
Published: February 2020

Tujuan penelitian ini untuk menggali kajian-kajian mengenai pengukuran dan pengembangan hubungan yang dilakukan oleh Perguruan Tinggi sebagai produsen layanan pendidikan dan mahasiswa sebagai penerima jasa pendidikan (pelanggan) dengan mengadopsi model pengembangan hubungan Relationship Quality-based Students Loyalty (RSQL), Guidelines for Measuring Relationship in Public Relations sebagai pengembangan dari konsep pemasaran relasional dan model pertukaran sosial dari Thibault dan Kelly. Penelitian ini dilakukan untuk menguji adanya hipotesis bahwa mahasiswa yang tidak melanjutkan kuliahnya dikarenakan layanan pada Perguran Tinggi yang tidakmemuaskan. Disamping itu, penelitian ini menyajikan model-model lain dalam pengembangan hubungan berikut disertai contoh operasionalisasi variabel yang digunakan untuk mengukur hubungan tersebut. Teknik pengambilan sampel dalam penelitian ini adalah menggunakan sampel gugus bertahap. Populasi sampel penelitian ini adalah sebanyak 362 mahasiswa yang saat ini menempuh studi di tiga perguruan tinggi bisnis di Jakarta. Penelitian ini dilakukan selama dua pekan selama bulan September sampai dengan November 2017. Hasil penelitian menunjukkan bahwa terdapat hubungan antara kualitas layanan terhadap loyalitas mahasiswa melalui kualitas hubungan. Selain itu, terdapat pula hubungan citra perguruan tinggi terhadap loyalitas mahasiswa yang dimediasi oleh kualitas hubungan.Kesimpulannya adalah bahwa kualitas hubungan memberikan pengaruh yang cukup signifikan terhadap peningkatan loyalitas mahasiswa sebagai variabel yang memediasikan pengaruh kualitas layanan dan citra perguruan tinggi. Rekomendasi bagi perguruan tinggi bersangkutan adalah untuk memperhatikan dimensi-dimensi kualitas hubungan seperti kepercayaan, komitmen, nilai-nilai dan kepuasan mahasiswa.
Komunikasi pariwisata budaya dalam mempromosikan city branding “Siak the truly Malay”
Authors: Salam Noor Efni , Nurjanah Nurjanah
Published: February 2020

Kabupaten Siak dikenal dengan slogan Siak the Truly Malay, karena daerah ini merupakan wilayah berbasis budaya Melayu, bahkan sudah berhak memegang hak cipta atas branding Siak the Truly Malay, paten atas branding tersebut, menurut Kepala Bagian Humas Pemerintah Kabupaten Siak sudah terdaftar sejak 27 April 2017. Berdasarkan kenyataan itulah  masyarakat Siak akhir-akhir ini bersemangat untuk mempromosikan city branding Siak the Truly Malay-nya. Tujuan penelitian ini adalah untuk menggali, menemukan, dan mendeskripsikankan  berbagai promosi yang digalakan mereka terkait dengan wisata budaya ini. Metode penelitian bersifat kualitatif. Teknik pengumpulan data melalui wawancara mendalam, observasi dan dokumentasi. Hasil penelitian menunjukan bahwa komunikasi pariwisata yang dilakukan oleh masyarakat Siak,antara lain: memasarkan objek atau produk-produk budaya Melayu,  baik situs-situs sejarah, kerajinan tradisional, kuliner dan kondisi geografis yang menunjang program tersebut sebagai brand Kabupaten ini, memberdayakan dan meningkatkan ekonomi kreatif yang mengarah kepada city creative; menyelenggarakan berbagai event budaya yang menjadi agenda tahunan, memaksimalkan berbagai saluran komunikasi, seperti situs-situs online, media elektronik, koran lokal dan berbagai publikasi lainnya, memperbaiki dan meningkatkan  sarana dan prasana terutama infrastruktur dan elektrisasi, dan meningkatkan  kerjasama dengan stakehlders. Beberapa rekomendasi untuk meningkatkan program ini, pemerintah sebaiknya memaksimalkan sarana dan prasarana di berbagai tempat wisata yang tengah dikembangkan; masyarakat ikut menjaga dan  mengembangkan potensi ekonomi kreatif yang mereka miliki, stakeholder/Swasta seharusnya memberikan dukungan material secara maksimal terhadap program pemerintah dalam mempromosikan city branding ini.
Investigations Regarding the Influence of Corporate Governance on Financial Performance. Empirical Study on Banks Listed on the Romanian Capital Market
Authors: Dănescu Tatiana , Popa Maria-Alexandra
Published: February 2020

The role of corporate governance in achieving the financial performance in a sustainable development context is recognized. A fundamental premise in defining and applying good corporate governance is the area of the elements that describe the structure of the capital, elements that influence the guidelines and policies of the Board of Directors regarding the obtaining of the financial performance. On the equation “share capital - financial performance” we find the imprint of the compliance rate of the management statements with the requirements of the Corporate Governance Code applicable on the capital market on which the entity trades its shares. In this context, considering the compliance of the management statements published in the set of annual reports with the Corporate Governance Code, our researches investigate the relationship between the capital structure and the financial performance of the banks listed on the Bucharest Stock Exchange.
Testing the Beneish Model Relevance in Case of Entities with Confirmed Reputational Risk
Authors: Spătăcean Ioan-Ovidiu
Published: February 2020

The Beneish model is a useful tool for assessing the potentially fraudulent behaviour of an entity that could resort to misstated financial reporting by manipulating earnings. Tarjo ---amp--- Herawati (2015) concluded that “the M-score of the Beneish model was generally able to detect financial fraud”, following a study on 35 listed companies that were confronted with allegations of fraud in the period 2001-2014, by accessing the sanctions database applied to companies of public interest (issuers) published by the Financial Supervisory Authority. Also, Ahmet Ozcan (2018) stated that the Beneish model “brings effective value in the analysis of the quantitative characteristics of falsified financial statements”, a conclusion based on a concentrated research on a sample of 174 firms over the period 2005-2017. However, the construction of this model was not oriented for the financial services industry, therefore the studies referred to above do not include any investment firms. Our research aims to assess the relevance of the use of the Beneish model to entities involved in scandals on fraudulent or suspected distorted financial reporting operations (Romcab, 2017 and Harinvest, 2013) in order to Test the Beneish model’s validation capability. On the basis of the conclusions obtained, it can be accepted that the applicability of the model is validated for the entities examined.