bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and Characterization of New Benzo[e]Indol Salts for Second-Order Nonlinear Optics
Authors: Wen Jiahui , Ping Linjun , Li Ruian , Shang Shufang , Zhao Weidong , Hai Mingtan , Cao Hui , Yuan Xiaotao , Wang Dong , He Wanli , Yang Zhou
Published: March 2020

Organic second-order nonlinear optical materials are of great significance in the field of integrated photonics, optical data storage and optical information processing. In this work, two iodide salts with benzo[e]indol cations as electron-withdrawing groups were designed and synthesized, which are (E)-2-(4-hydroxy-3-methoxystyryl)-1,1,3-trimethyl-1H-benzo[e]indol-3-ium iodide (1-TB) and (E)-2-(3,4-dihydroxystyryl)-1,1,3-trimethyl-1H-benzo[e]indol-3-ium iodide (2-TB). Under the irradiation of 1064 nm laser, the second harmonic generations of the 1-TB and 2-TB powders are 760 and 580 times that of urea, respectively. Among them, crystals of 1-TB are successfully grown by a slow cooling method without using seed crystals. Bulk crystal with a size of 8.0 × 3.0 × 1.0 mm3 and many submillimeter single crystals with excellent optical quality are obtained.
Effects of Interfacial Reactions on Microstructures and Mechanical Properties of 3003 Al/T2 Cu and 1035 Al/T2 Cu Brazed Joints
Authors: Zhang Man
Published: March 2020

To meet the demand for efficient and reliable copper and aluminum (Cu/Al) joints in refrigeration and electric power industries, interfacial reactions in 3003 Al/T2 Cu and 1035 Al/T2 Cu joints brazed by Zn-xAl (x ranged from 2–25 wt.%) filler metals and their effects on the mechanical properties of the joints were investigated. Microstructures and fracture surfaces were observed combining with composition analysis. For 3003 Al/Cu joints, bulk CuAl and CuAl2 intermetallic compound (IMC) formed in brazing seams, and a CuAl IMC layer formed at the Cu side interfaces. For 1035 Al/Cu joints, bulk CuAl2 IMC formed in brazing seams, and an Al4.2Cu3.2Zn0.7 IMC layer formed at the Cu side interfaces. For both kinds of joints, shear strength increased first, then decreased with the increasing Al content. The increase in shear strength was because Al promoted the formation of Cu-Al IMC, and caused dispersion strengthening. With the excessive Al content, however, the bulk IMC became coarse and the IMC layers at Cu side interfaces grew thick, causing the joint strength to decrease due to stress concentration. The strength of 3003 Al/Cu joints was always higher than that of 1035 Al/Cu, and their highest strength were achieved by Zn-12Al and Zn-15Al, respectively.
Cr3C2-NiCr Coating for the Protection of API Steel Corrosion in Concentrated Sodium Chloride Solution
Authors: Sherif El-Sayed M. , El Rayes Magdy M. , Abdo Hany S.
Published: March 2020

In the present work, a layer of 75%Cr3C2−25%NiCr with thickness of 260 ± 15 µm was coated onto the API-2H pipeline steel surface using high-velocity oxy-fuel deposition. The effect of 75%Cr3C2−25%NiCr coating on the corrosion of the API steel after 1 h, 24 h, and 48 h exposure in 4.0% sodium chloride solutions is reported. The corrosion tests were performed using potentiodynamic cyclic polarization, electrochemical impedance spectroscopy, and chronoamperometric current–time techniques along with scanning electron microscopy and energy-dispersive X-ray analyses. The curves of polarization indicated that the presence of the coating increases the corrosion resistance of the steel through decreasing its corrosion current and corrosion rate. Impedance data showed that all resistances recorded higher values for the coated API steel. Chronoamperometric current–time measurements confirmed that the coated API steel has lower absolute current values and thus lower corrosion rate. All results proved that the presence of 75%Cr3C2−25%NiCr coating enhances the corrosion resistance of the API steel via the formation of a protective layer of Cr and Ni oxides, which could lead to decreasing the corrosion rate.
Crystal Chemistry and Luminescence Properties of Eu-Doped Polycrystalline Hydroxyapatite Synthesized by Chemical Precipitation at Room Temperature
Authors: Baldassarre Francesco , Altomare Angela , Corriero Nicola , Mesto Ernesto , Lacalamita Maria , Bruno Giovanni , Sacchetti Alberto , Dida Bujar , Karaj Dafina , Ventura Giancarlo Della , Capitelli Francesco , Siliqi Dritan
Published: March 2020

Europium-doped hydroxyapatite Ca10(PO4)6(OH)2 (3% mol) powders were synthesized by an optimized chemical precipitation method at 25 °C, followed by drying at 120 °C and calcination at 450 °C and 900 °C. The obtained nanosized crystallite samples were investigated by means of a combination of inductively coupled plasma (ICP) spectroscopy, powder X-ray diffraction (PXRD), Fourier Transform Infrared (FTIR), Raman and photoluminescence (PL) spectroscopies. The Rietveld refinement in the hexagonal P63/m space group showed europium ordered at the Ca2 site at high temperature (900 °C), and at the Ca1 site for lower temperatures (120 °C and 450 °C). FTIR and Raman spectra showed slight band shifts and minor modifications of the (PO4) bands with increasing annealing temperature. PL spectra and decay curves revealed significant luminescence emission for the phase obtained at 900 °C and highlighted the migration of Eu from the Ca1 to Ca2 site as a result of increasing calcinating temperature.
DNA Metabarcoding of Deep-Sea Sediment Communities Using COI: Community Assessment, Spatio-Temporal Patterns and Comparison with 18S rDNA
Authors: Atienza Sara , Guardiola Magdalena , Præbel Kim , Antich Adrià , Turon Xavier , Wangensteen Owen Simon
Published: March 2020

Among the complex ecosystems and habitats that form the deep sea, submarine canyons and open slope systems are regarded as potential hotspots of biodiversity. We assessed the spatial and temporal patterns of biodiversity in sediment communities of a NW Mediterranean Canyon and its adjacent open slope (Blanes Canyon) with DNA metabarcoding. We sampled three layers of sediment and four different depths (900–1750 m) at two seasons, and used a fragment of the mitochondrial gene cytochrome c oxidase subunit I (COI) as a metabarcoding marker. The final dataset contained a total of 15,318 molecular operational taxonomic units (MOTUs). Metazoa, Stramenopiles and Archaeplastida were the dominant taxa and, within metazoans, Arthropoda, Nematoda and Cnidaria were the most diverse. There was a trend towards decreasing MOTU richness and diversity in the first few cm (1 to 5) of the sediment, with only 26.3% of the MOTUs shared across sediment layers. Our results show the presence of heterogeneous communities in the studied area, which was significantly different between zones, depths and seasons. We compared our results with the ones presented in a previous study, obtained using the v7 region of the 18S rRNA gene in the same samples. There were remarkable differences in the total number of MOTUs and in the most diverse taxa. COI recovered a higher number of MOTUs, but more remained unassigned taxonomically. However, the broad spatio-temporal patterns elucidated from both datasets coincided, with both markers retrieving the same ecological information. Our results showed that COI can be used to accurately characterize the studied communities and constitute a high-resolution method to detect ecological shifts. We also highlight that COI reference databases for deep-sea organisms have important gaps, and their completeness is essential in order to successfully apply metabarcoding techniques.
Hummingbird–Plant Interactions Are More Specialized in Forest Compared to Coffee Plantations
Authors: Morrison Beth M. L. , Mendenhall Chase D.
Published: March 2020

Deforestation transforms habitats, displacing vertebrates and the other dimensions of biodiversity they support through their interactions. Few empirical studies have quantified the effect deforestation has on vertebrate–pollinator interaction networks. Here we quantify how hummingbird–plant networks change in relation to hummingbird diversity across a deforestation gradient. We found that, overall, hummingbird–plant interactions were significantly more specialized in forests and specialized interactions decayed rapidly with the loss of tree cover at small spatial scales. Hummingbird species interaction specialization was also higher in forest habitats compared to coffee plantations, but we found no support for a morphological hummingbird trait that predicted interaction specialization or forest dependence. Finally, we developed spatially explicit models for quantifying impacts of land-use decisions on hummingbird species and the biodiversity they support. These tools can be used to identify and prioritize important habitats for conservation activities, like creating new protected areas and improving agricultural lands for biodiversity.
Integrating 5S Methodology into Oral Hygiene Practice for Elderly with Alzheimer’s Disease
Authors: Gao Sherry Shiqian , Chu Chun Hung , Young Fanny Yuk Fun
Published: March 2020

Dementia is a clinical syndrome of loss of intellectual capability. Alzheimer’s disease (AD) is the dominant subtype of dementia and is common among the elderly. Because of impaired memory and disturbed executive functioning, the elderly with AD often have difficulty to perform oral hygiene practice and are at high risk of dental caries and periodontal diseases. These dental problems are ambulatory care-sensitive conditions where effective community dental care can help prevent the need for hospital admission. Community dental care practitioners can formulate effective strategies for the elderly with AD to reduce their risk of dental diseases. One of these strategies is to integrate 5S into oral hygiene practice. 5S was originally developed for organising spaces for people to work efficiently, effectively, and safely. It consists of five steps which are (i) sorting to remove unnecessary items, (ii) setting-in-order to place the items in order of flow, (iii) shining to clean and maintain the environment, (iv) standardising to establish discipline for good oral hygiene habits, and (v) sustaining to keep 5S going by auditing and improving the environment and oral hygiene practice. This system helps the elderly with AD to put things where they belong and keep the workplace clean. Moreover, it facilitates the elderly with AD to perform oral hygiene practice without wasting time and risking injury. This paper discusses the use of 5S to help the elderly with AD build and sustain an effective oral hygiene practice habit to improve their oral health.
Convergence of Password Guessing to Optimal Success Rates
Authors: Murray Hazel , Malone David
Published: March 2020

Password guessing is one of the most common methods an attacker will use for compromising end users. We often hear that passwords belonging to website users have been leaked and revealed to the public. These leaks compromise the users involved but also feed the wealth of knowledge attackers have about users’ passwords. The more informed attackers are about password creation, the better their password guessing becomes. In this paper, we demonstrate using proofs of convergence and real-world password data that the vulnerability of users increases as a result of password leaks. We show that a leak that reveals the passwords of just 1% of the users provides an attacker with enough information to potentially have a success rate of over 84% when trying to compromise other users of the same website. For researchers, it is often difficult to quantify the effectiveness of guessing strategies, particularly when guessing different datasets. We construct a model of password guessing that can be used to offer visual comparisons and formulate theorems corresponding to guessing success.
Spectral Structure and Many-Body Dynamics of Ultracold Bosons in a Double-Well
Authors: Schäfer Frank , Bastarrachea-Magnani Miguel , Lode Axel , de Parny Laurent , Buchleitner Andreas
Published: March 2020

We examine the spectral structure and many-body dynamics of two and three repulsively interacting bosons trapped in a one-dimensional double-well, for variable barrier height, inter-particle interaction strength, and initial conditions. By exact diagonalization of the many-particle Hamiltonian, we specifically explore the dynamical behavior of the particles launched either at the single-particle ground state or saddle-point energy, in a time-independent potential. We complement these results by a characterization of the cross-over from diabatic to quasi-adiabatic evolution under finite-time switching of the potential barrier, via the associated time evolution of a single particle’s von Neumann entropy. This is achieved with the help of the multiconfigurational time-dependent Hartree method for indistinguishable particles (MCTDH-X)—which also allows us to extrapolate our results for increasing particle numbers.
A Novel Fuzzy Entropy-Based Method to Improve the Performance of the Fuzzy C-Means Algorithm
Authors: Cardone Barbara , Di Martino Ferdinando
Published: March 2020

One of the main drawbacks of the well-known Fuzzy C-means clustering algorithm (FCM) is the random initialization of the centers of the clusters as it can significantly affect the performance of the algorithm, thus not guaranteeing an optimal solution and increasing execution times. In this paper we propose a variation of FCM in which the initial optimal cluster centers are obtained by implementing a weighted FCM algorithm in which the weights are assigned by calculating a Shannon Fuzzy Entropy function. The results of the comparison tests applied on various classification datasets of the UCI Machine Learning Repository show that our algorithm improved in all cases relating to the performances of FCM.
Analisis Rasio Keuangan Untuk Menilai Kinerja Hotel Ciater Spa & Resort, Subang
Authors: Saepudin Pudin , Muslim Syaeful
Published: March 2020

Financial ratio analysis of a company is one of financial performance assessment that are very useful to management in making plan for both short term and long term. The purpose of this research is to evaluate the implementation of financial statement analysis carried out by Hotel Ciater Spa & Resort in 2013 and 2014. The research method used is descriptive method. From the results of analysis show that the level of liquidity ratios, solvency, and operational is quite high, while the ratio of profitability has. fluctuated and the ratio of the activity has not been fully effective.
Partisipasi Masyarakat terhadap Pengembangan Desa Wisata “Watu Rumpuk” Desa Mendak Kecamatan Dagangan Kabupaten Madiun
Authors: Hilman Yusuf , Aziz Muhammad  Saeful Abdul
Published: March 2020

Tourism is important sectors which became one of the fields of economic society, Assess the potential was necessary to sustain an effort so that the sector can move all levels of society, And the participation of the possible significantly. The qualitative method descriptive was used in the study, to interpreting the data obtained in the field. The results of research to explain the management of tourist village in Mendak village either on tourism and the tourism potential climbing Tapak Bima should involve the community from management planning. t is one of the rural development community-based tourism is the responsibility of the community for potential and tourism objects that in the management of tourist village in the village mendak, they must be involved in the process of planning, implementation, and evaluation. Community involvement in the process of planning, of the project up to evaluation will encourage a sense of belonging and about the potential of tourism objects that will guarantee sustainability, potentials, and the object.
Comparison of Ultrasound-Guided Transversus Abdominis Plane Block vs Caudal Block For Postoperative Analgesia After Lower Abdomen Surgery In Children.
Authors: ERBÜYÜN Koray , ÇEVİKKALP Eralp , AYDIN TOK Demet , OK Gülay , TEKİN İdil
Published: March 2020

Introduction. Caudal anesthesia is a very popular postoperative analgesia technique for pediatric lower abdominal surgery. Because of the limitations of caudal block anesthesiologists need to search for alternative regional anesthesia techniques.This study aims to compare the effects and safety of Ultrasound-assisted TAP block and caudal block in postoperative analgesia.
Methods. The study was conducted in ASA grade I-II, 2-10 years aged cases scheduled for lower abdominal surgery. At group C (caudal block , n: 31), 0,3 mL.kg-1 and at group T (TAP block, n: 30), 0,5 mL.kg-1 0,25 % levobupivacaine applied at the end of surgery. Patients were assessed for the quality of pain relief by using faces pain scale-revised (FPS-R) at 0., 1., 4., 6., hours of the postoperative period. Analgesic consumption, complications and adverse effects was recorded. Student’s t-test, ANOVA, Fisher exact test were used for statically analyses.
Results. Between two group there were no significant differences at demographical data. The local anesthetic volume used for TAP block was more than caudal block (T:8,3±4,3 > C: 4,1±0,9) (p<0,05). When we compared the FPS-R at 0. hour, TAP block was more efficient at postoperative pain than caudal block (p<0,05). 23 % off all patients (n:14) required analgesic. There were no significant differences between two groups.
Conclusion: In conclusion TAP block and caudal block are simple, safe and effective analgesic methods in early period of postoperative pain management in lower abdominal pediatric surgery.
PROCESSING OF THE DIGITAL IMAGES OF ANALOGOUS OSCILLOGRAMS AT PULSED MEASUREMENTS
Authors: Ivon Alexander , Istushkin Valery , Rybka Yuri , Savran Sergey
Published: March 2020

A program for processing the digital images of analog oscillograms at pulsed measurements of the current-voltage characteristics of semiconductor materials and devices in the region of high electric currents is presented. The processing of digital images in this program bases on scanning of coordinates and allows measuring the instantaneous voltages and currents with a relative error of no more than 1%. The program is created using the languages HTML5, CSS3, JavaScript and Canvas technology. The software environment for program run is the Internet browser.
WEB APPLICATION FOR MEASURING OF THE COMPONENTS CONTENT WITH PHASE TRANSITION IN HETEROGENEOUS MATERIALS
Authors: Ivon Alexander , Istushkin Valery , Krokhin Vladimir , Savran Sergey
Published: March 2020

The possibility of using raster images to improve the accuracy of processing differential thermal analysis (DTA) data is considered. Estimation of error in measuring of components content with a phase transition in heterogeneous materials by the DTA data presented in the form of raster images was made. Using languages HTML, CSS, JavaScript as well as Canvas technology, a web-application for processing DTA data presented as raster images was created. The application allows measuring the relative content of components with a phase transition in heterogeneous materials with an error of 3% by scan data of peaks in DTA curves. The application created in this work can use any Internet browser as a software environment.
DEVELOPMENT OF A DECENTRALIZED VOTING APPLICATION USING BLOCKCHAIN TECHNOLOGY
Authors: Ponomarev Igor
Published: March 2020

To date, blockchain technologies have gained general interest as a new approach to creating secure storage and data processing systems. This approach can be applied in many industries and opens up new opportunities to increase transparency and improve the performance of distributed systems. When voting, it is important to have a guarantee that no one will be able to manipulate the data and that the information is accessible to all. The development of a decentralized voting application using blockchain technology is being considered.
THE METHODOLOGY FOR DEVELOPING WEB APPLICATIONS ON THE PLATFORM ASP.NET CORE
Authors: Kraves Andrey , Ponomarev Igor
Published: March 2020

The stack of web technologies today is very diverse. When choosing tools for developing a highly loaded web portal, it is important to pay attention to many factors, for example: modularity, the ability to deploy in the cloud, dependency injection, and so on. The technique of using the cross-platform .NET Core environment for developing large web portals and web services is considered.
ОПТИМАЛЬНЫЙ ОБЪЕМ АККУМУЛИРУЮЩИХ БУНКЕРОВ, РАБОТАЮЩИХ В СИСТЕМЕ КОНВЕЙЕРНОГО ТРАНСПОРТА УГОЛЬНЫХ ШАХТ
Authors: Kiriia Ruslan , Dziuba Serhii , Mostovyi Borys
Published: March 2020

Разработана математическая модель функционирования аккумулирующего бункера, работающего в системе конвейерного транспорта в режиме поддержания в нем объема груза в заданных пределах. При этом предполагалось, что интервалы времени простоев и работы надбункерной и подбункерной конвейерных линий распределяются по экспоненциальным законам. Определен максимальный объем аккумулирующего бункера, при котором пропускная способность системы «конвейер-бункер-конвейер» практически не увеличивается с увеличением объема бункера.
СИМУЛЯЦИЯ ВЛИЯНИЯ ОСТАТОЧНЫХ НАПРЯЖЕНИЙ И ПАРАМЕТРОВ SLM-ТЕХНОЛОГИИ НА ФОРМИРОВАНИЕ ОБЛАСТИ ГРАНИЦ ИЗДЕЛИЯ ИЗ ЖАРОПРОЧНОГО НИКЕЛЕВОГО СПЛАВА INCONEL 718
Authors: Adjamsky Sergey , Kononenko Ganna , Podolskyi Rostislav
Published: March 2020

Селективное лазерное плавление (SLM) – это технология аддитивного производства при которой с помощью лазера можно изготавливать детали со сложной геометрией и высокими механическими свойствами. Однако, оптимальные технологические параметры SLM-процесса для металлических материалов сложно предсказать. Представлены результаты универсальной и упрощенной модели для прогнозирования плотности энергии в области границ металлической детали из Inconel 718, для предотвращения отклонений в геометрии детали на основе соотношения между плотностью подводимой удельной энергии и ее поглощением во время процесса.
СИСТЕМНЫЙ ПОДХОД К ОБЕСПЕЧЕНИЮ НАДЕЖНОСТИ РАБОТЫ МНОГОКЛЕТЬЕВЫХ СТАНОВ
Authors: Baglai Andrii , Kipin Mykhailo
Published: March 2020

Рост объема производства, расширение сортамента продукции и улучшение его качества ведет к увеличению статических и динамических нагрузок, снижению долговечности и поломок прокатного оборудования усталостного характера. Комплексный подход к организации измерений и анализа вибрационных сигналов позволил разработать экспертную систему вибродиагностики «Корунд», которая обеспечивает постоянный контроль технического состояния клетей. В системе применены оригинальные алгоритмы измерений и анализа, учитывающие информацию о текущем техническом состоянии, циклах технологического процесса и особенностях нагружения прокатного оборудования. Диагностический модуль позволяет определить вид дефекта, степень его развития и рассчитать эксплуатационный ресурс узлов механизма. При этом диагностика выполняется как в процессе прокатки металла, так и в режиме холостого хода. Дополнительный функционал позволяет фиксировать время запаздывания сигналов на шестеренном, редукторном, моторном участках и судить о степени износа деталей механизма. Методика защитного мониторинга информирует персонал в режиме реального времени о возникновении внештатных ситуаций на прокатных клетях стана. Программное обеспечение имеет открытую архитектуру, легко конфигурируется под конкретную производственную задачу и работает с базами данных SQL и Oracle.
Аналітичне дослідженя впливу конструкції складеного сопла на термодинаміку процесів при продувці зверху у LD-конвертері
Authors: Golub Tetiana , Semykin Serhii
Published: March 2020

У киснево-конвертерній ванні протікає складний комплекс явищ, серед яких процес взаємодії газового струменя окислювача з розплавом є первинним і визначальним фактором в проходженні фізико-хімічних і тепло- масообмінних процесів при плавці. З метою підвищення ступеня якісного засвоєння кисню дуття ванною запропоновано використання складеного сопла на базі коаксіального кільцевого. Аналітичне дослідження термодинамічного показника протікання реакцій – енергії Гіббса для умов використання складеного кільцевого сопла встановило можливість більш активного протікання всіх реакцій, що протікають у первинній реакційній зоні, а особливо реакцій, що відповідають за шлакоутворення та тепловий стан ванни. Отримані результати кореспондуються зі встановленими раніше на фізичних та високотемпературних дослідах ефектами у порівнянні з роботою звичайного чотирьох соплового наконечника: більш глибоким зануренням струменя газу у рідку ванну, активним засвоєнням вапна та підвищенням температури підфурменої зони.
КЛАССИФИКАЦИЯ ФАКТОРОВ РИСКА ПРИ РАБОТЕ КОНВЕЙЕРНОГО ТРАНСПОРТА НА ГОРНЫХ ПРЕДПРИЯТИЯХ
Authors: Kiriia Ruslan , Smirnov Andrii , Mishchenko Tamara
Published: March 2020

В работе проведена классификация факторов риска ленточных конвейеров, работающих на открытых горных предприятиях и в угольных шахтах с точки зрения наносимого ущерба: технического, экономического, экологического и социального. Проведен предварительный анализ риска ленточных конвейеров, включая модификацию опасностей, т.е. выявление опасностей и предварительная оценка характеристик опасностей. В результате выявлены основные факторы риска ленточных конвейеров и получено дерево отказов ленточных конвейеров, работающих на горных предприятиях.Анализ риска всех типов ленточных конвейеров (общего назначения, глубокожелобчатых, с прижимной лентой и вертикальных) показал, что наиболее опасным воздействием на окружающую среду являются конвейеры общего назначения и вертикальные. При этом для крутонаклонных конвейеров с глубокожелобчатой лентой, а также вертикальных конвейеров существенным фактором опасности является неустойчивость крупных кусков груза на ленте конвейера.
Дослідження динамічних властивостей частотно-регульованого електропривода механізму пересування електродів дугової електропечі шляхом математичного моделювання
Authors: Kuvaiev Viktor , Nezhurin Vadym , Vasyl Stopkin , Kryvytskyi Yevhen
Published: March 2020

Considered literature devoted to the modernization of control systems, controllers and variable-frequency drive mechanism for movement of the electric arc furnace electrodes. The research of current and proposed drives through mathematical modeling. Models of the control system of the electrode mechanism for the basic and proposed variants with scalar and vector control are made in the MATLAB software. Survey on simulation models confirmed that the system provides vector control speed transient time 16% less than the DC system and a static error is 0% to 3%. The implementation of the electric drive of the mechanism of movement of electrodes based on the frequency converter with vector control and an induction motor is a promising direction of modernization.
РЕАЛЬНИЙ ВАРІАНТ ОДНОВИМІРНОЇ ЗАДАЧІ ТЕПЛОПРОВІДНОСТІ ДЛЯ СУЦІЛЬНОГО НЕОБМЕЖЕНОГО СТАЛЕВОГО ЦИЛІНДРА
Authors: Babachenko Oleksandr , Boiko Lidiia , Kononenko Hanna
Published: March 2020

Сучасний етап розвитку методів проведення наукових досліджень характеризується широким використанням засобів обчислювальної техніки та чисельного моделювання. Ці потужні обчислювальні засоби суттєво збільшують можливості нової методології наукових досліджень, а саме, встановлюють більш тісну взаємодію експериментальних та теоретичних досліджень. В умовах промислового виробництва особливо велике значення має скорочення матеріальних та часових ресурсів при розробці нових технологій та освоєнні нового сортаменту продукції та нових сталей. Для термічної обробки металовиробів ці питання можна вирішити за допомогою сучасних методів моделювання та розрахунків, які при мінімальних витратах часу та матеріальних засобів дозволяють досліджувати різні технологічні процеси, проводити їх розробку та оптимізацію для різних матеріалів з отриманням конкретних рішень.
Особливості використання розрахункових схем та моделювання для визначення технологічних режимів реалізації комплексних технологій внутрішньоформенного газодинамічного впливу на розплав
Authors: Selivyorstov Vadim , Selivyorstova Tatjana
Published: March 2020

Представлений аналіз стеку розрахункових схем та математичних моделей, які можуть бути використані під час визначення режимів реалізації комплексних технологій внутрішньоформенного газодинамічного впливу на розплав.
Моделювання впливу стрічкового включення на напружено-деформований стан сферичної оболонки з еліптичним отвором
Authors: Hudramovych Vadym , Hart Eteri , Marchenko Oleh
Published: March 2020

Shell structures have been widely used as carrying structures in many branches of industries. These types of structures combine high strength with small weight, therefore, to ensure the save operation of the structures, it is important for evaluation the strength and reliability. In most cases, shells used in real designs and have simple geometric shapes of surfaces (shells of rotation). Complex designs are usually a combination of these shell shapes. Investigation of the influence of local concentrators in view of holes for shells on the stress-strained state of the shells and methods of reducing the stress concentration in thin-walled shells of rotation is an urgent task of mechanics of a deformable solids. In this work a computer simulation of the behavior of a thin-walled spherical shell with an elliptical hole and tape inclusion is made. The finite element analysis of the influence of geometric and mechanical parameters for supporting elements of the hole, modeled by inclusions of material other than its shell material is carried out. We will note importance of such researches for design and optimization of construction for a number of industries, in particular, rocket-space technique.
On choosing a design strategy for WEB APPLICATION ARCHITECTURE
Authors: Bozhukha Liliia , Biloborodko Oksana
Published: March 2020

The article presents the results of the analysis of the existing web application architecture design methodologies and the corresponding software development tools and resources.The shortcomings of the existing approaches to application development were identified and conducted the analysis can be used to design the web systems architecture. The practical value of the work is the development of algorithms for creating, deploying and scaling applications using different software. A test system based on several classic approaches has been developed.
Production of process automation technology in the first stage of preparation ore of wet grinding
Authors: Dmitriiev Valerii
Published: March 2020

The creation of a new technology of automation of ore preparation processes in cycles of wet ore grinding is considered on the basis of analysis and modeling, modeling of the technological and physical features of apparatus and processes. An example of creation automation technology for controlling the performance of a spiral classifier in sand, modeling, testing technology and practical use in the conditions of the ore processing plant.
PARALLEL IMPLEMENTATION OF THE COMBINED ALGORITHM OF THE BRANCH AND BOUND METHOD
Authors: Ivaschenko Valeriy , Shvachych Gennady , Konovalenkov Vladimir , Khristyan Vladimir
Published: March 2020

Parallel implementation of a combined branch-and-bound algorithm for the knapsack problem are considered. An approach combining parallel implementations of the branch-and-bound method and the heuristic search is proposed and implemented. Basic attention is focused on the questions of research of efficiency and acceleration for calculations due to the increase of the cluster system knots. As a result of the proposed approach, a organization scheme of the combined algorithm of distributed computing was obtained. The approach proposed in this paper saves the developers’ efforts by reapplying common parts of the algorithm to solve various problems of optimization. In fact, one can implement a common solution scheme for different platforms once, and later use only problem-dependent modules for a specific class of problems.
Migrants and the Media in Nineteenth-Century Liverpool
Authors: Pooley Colin G.
Published: March 2020

Migration is a controversial topic in twenty-first century Britain, and similar debates were equally visible in the nineteenth century with ample evidence that migrants from Ireland and Europe faced stigmatisation and discrimination in British cities. Today the media plays a major role in fuelling such debates, but little is known about the impact of newspaper reporting on public perceptions of migrants in the past. This article focuses on the reporting of cases brought before the police courts in Liverpool in 1851, 1871 and 1891 and, through the use of nominal record linkage to census data, examines the extent and manner in which migrant origin was commented on in one major Liverpool newspaper. It is demonstrated that, perhaps surprisingly, this media outlet largely ignored migrant origin in its reporting, and thus it was not a significant factor in shaping public perceptions of migrants in the city.
London's Changing Ethnic Landscape, 2001–2011: A Cartographic Exploration
Authors: Johnston Ron , Poulsen Michael , Forrest James
Published: March 2020

London's population became increasing more diverse ethnically over the decade 2001–2011, a period when the White population declined, with many commentators suggesting that there has been 'White flight' from some districts in the face of 'invasion' by members of ethnic minority groups. To examine how extensively the city's ethnic landscape changed during that period – and whether suggestions of the operation of 'invasion and succession processes' are valid – this article reports on statistical mapping of small area data for the two censuses. The results identify clearly-defined, substantial blocks of territory within the urban residential fabric where members of each of the main census respondent self-identified ethnic groups are concentrated. These have expanded outwards, into areas from which the White population has clearly withdrawn, though in most cases the rate of cluster areal expansion has been less than the groups' numerical growth.
Acessibilidade para Usuários de Cadeira de Rodas em Estabelecimentos Comerciais
Authors: Albers Christian , Wolff Bruna Ghesla , Barth Michele , Renner Jacinta Sidegum
Published: March 2020

O artigo visa analisar em que medida os estabelecimentos comerciais de duas cidades turísticas da Serra Gaúcha são acessíveis aos usuários de cadeira de rodas. A pesquisa é de natureza básica, de caráter descritivo e realizada sob o paradigma quantitativo e qualitativo. Foi realizado um estudo de caso em duas cidades da Serra Gaúcha, onde foram analisados 377 estabelecimentos comerciais. Os resultados indicaram que 38,45% dos estabelecimentos estudados oferecem rampas adequadas e somente 1,32% disponibilizam sanitários adaptados. Portas acessíveis foram identificadas em 80,36%, bem superior aos demais itens analisados, porém ainda insuficiente para garantir a acessibilidade universal. Pode-se inferir que se encontrou um número significativo de barreiras arquitetônicas que interferem negativamente na acessibilidade da população local e dos turistas usuários de cadeira de rodas.
Políticas Públicas de Esporte e Lazer
Authors: Soares Marta Genú , Silva Júnior Manoel do Espírito Santo , Franco Stefanie da Conceição
Published: March 2020

Este é um diagnóstico dos agentes culturais do esporte e do lazer na Rede Cedes-PA no Município de Belém. Faz mapeamento dos sujeitos, projetos e atividades desenvolvidas para instalar uma política de formação, acompanhamento e assessoramento. Objetiva reconhecer a organização e funcionamento do esporte e lazer desenvolvidos em projetos sócios educacionais coordenados por agentes culturais ou órgãos públicos. A pesquisa do tipo ação com abordagem quanti-qualitativa, aplica o questionário como instrumento de coleta de dados e analisa os dados coletados com o parâmetro das políticas públicas para o esporte e para o lazer e o referencial teórico da área. Conclui que o trabalho orgânico e coletivo entre pesquisadores da área e agentes culturais resiste às intempéries da conjuntura político-econômica e se materializa com a auto-organização e propósito comum entre esses sujeitos e a população.
A Prática de Lazer na Web a Partir do Consumo de K-Dramas
Authors: Gun Sok Cheng
Published: March 2020

O presente artigo tem por objetivo identificar o modo pelas quais são consumidos os dramas de origem sul-coreana no âmbito do lazer. Foram realizadas pesquisas bibliográficas acerca da evolução de tais produções quanto a Onda Coreana e, assim, identificar o papel da internet no acesso a esses produtos audiovisuais. Com os questionários, procurou-se descrever o perfil desses consumidores com relação às tais práticas. Os resultados mostraram que grande parte dos que assistem a esses programas, consomem outras produções asiáticas apesar de nem sempre estarem ligadas a Coreia do Sul. As plataformas de streamings oficiais, assim como os fansubs, tem contribuído fortemente na promoção de tais produções mesmo que indiretamente, assim como com a disseminação da Onda Coreana. Quanto ao lazer, grande parte dos respondentes citou atividades voltadas ao ambiente virtual, bem como atividades voltadas ao turismo, e ao social.
Resenha do Livro Ócio Valioso para Envelhecer Bem
Authors: Awad Hani Zehdi Amine , Pimentel Giuliano Gomes de Assis
Published: March 2020

Resenhamos o livro Ócio valioso para envelhecer bem, de Manuel Cuenca Cabeza, buscando elucidar o significado do ócio valioso e ativo enquanto prática de lazer na fase do envelhecimento. Para Cuenca a transição da atividade produtiva para a aposentadoria provoca mudança existencial, limitando a autoexpressão do idoso. Para viver com maior autonomia e sensibilidade a fase do envelhecimento, propõe ao aposentado experienciar um ócio ativo e dinâmico que lhe permita ter prazer e motivação para desfrutar a cada dia de sua existência. Mas, como seria possível o idoso viver esse ócio valioso, especialmente no contexto brasileiro?
Comparative effects of Alpha Tocopherol and Ascorbic Acid on Chronic Stress Induced Neuropeptide Y Derangements
Authors: Zainab Saadia , Tahir Ahmad Munir  , Anjum Ilahi  , Adnan Saleem Khan
Published: March 2020

Background: Chronic stress decreases resilience of the body mainly due to hormonal imbalance. Neuropeptide Y-ergic system is abnormally regulated in chronic stress due to reduction-oxidation imbalance. The antioxidants such as alpha-tocopherol and ascorbic acid reduce this imbalance with positive effect on neuropeptide Y synthesis and release. This study was aimed to compare the protective effects of alpha-tocopherol and ascorbic acid on plasma neuropeptide Y levels in chronic stress.Material and Methods: This quasi-experimental study was done at Al-Nafees Medical College in collaboration with National Institute of Health Islamabad from January 2015 to January 2016 after taking institutional approval. Sixty male Sprague Dawley rats were obtained and divided equally into four groups; group I (control), group II (restraint stress group - chronic restraint stress six hours daily for 28 days), group III (restraint stress + alpha-tocopherol 50mg/kg body weight /day), and group IV (restraint stress + ascorbic acid 100mg /kg body weight /day). Cardiac puncture was done to obtain blood for biochemical analysis.Results: A significant decrease in plasma neuropeptide Y levels was seen in group II compared to group I, group III and group IV. However, alpha-tocopherol administration in group III showed positive effects on maintenance of plasma neuropeptide Y concentration with better p trend than that of ascorbic acid supplementation in group IV.Conclusions: Alpha-tocopherol supplementation has more potent effect than that of ascorbic acid on chronic restraint stress induced derangements in neuropeptide Y levels. It leads to less imbalance in neuropeptide Y levels during chronic stress.Key words: Ascorbic Acid, Alpha-Tocopherol, Chronic Stress, Neuropeptide Y
Análisis bibliométrico de las revistas de Psicología afines al ámbito Jurídico-Forense atendiendo a la WoS y el JCR (2018)
Authors: Quevedo-Blasco Raúl , Guillén-Riquelme Alejandro , Buela-Casal Gualberto
Published: March 2020

Los criterios de calidad empleados por las revistas científicas, las temáticas más actuales y los autores más relevantes, son de gran interés para los investigadores de los distintos ámbitos. El objetivo principal de este estudio es proporcionar información actualizada de las revistas Jurídico-Forenses afines a la Psicología, atendiendo a los siguientes indicadores: a) Journal Citation Reports (JCR) con la última información disponible del 2018, y b) análisis bibliométrico y de contenido (del 2014 al 2018) de los artículos de las revistas objeto de estudio indexados en Web of Science (WoS). Se analizaron las 19 revistas en las categorías de Criminology & Penology y Law en JCR, afines a la Psicología. Se incluyeron un total de 5.289 artículos. La revista con el Factor de Impacto más alto es The European Journal of Psychology Applied to Legal Context (3,682). Además, es llamativo que el Factor de Impacto de las revistas analizadas ha aumentado en el 50% de ellas, en comparación con el JCR de 2017. Se observa una amplia frecuencia del uso de términos relacionados con “crímenes” y “agresiones” en los artículos publicados en los últimos cinco años. Es importante seguir potenciando el desarrollo de revistas de calidad para la Psicología Jurídica y Forense.
En busca de una definición empírica de la multi-autoría desproporcionada para la evaluación de la actividad investigadora en Psicología
Authors: Arce Ramón , Selaya Adriana , Palmer Alfonso L. , Sanmarco Jéssica
Published: March 2020

Uno de los criterios específicos para la evaluación de la actividad investigadora es la participación activa en el trabajo que se va a evaluar. Dicha participación se ha de especificar en los casos de multiautoría, concretándose por cada campo una definición de ésta. En la disciplina de Psicología se señala que cuando el número de autores sea desproporcionado se reducirá la calificación asignada a la aportación. No obstante, no se establece cuál es el criterio para clasificar la multiautoría como desproporcionada. Por ello diseñamos un estudio con datos de la Core Collection de la Web of Science del período 2013-2018 de los artículos publicados por investigadores españoles por área de conocimiento, encontrando un total de 5.781 registros. Los resultados advierten que el 4,4% de los artículos están firmados por un número atípico (outliers o extremos) de autores y que, por tanto, no deberían ser aportaciones evaluables. Se definen los criterios para establecer valores outliers y extremos por área. Asimismo, se han estimado los valores anormales, tanto en la cola positiva como negativa de las distribuciones por área de conocimiento. De estos se extrajeron criterios empíricos por área de conocimiento para reducir la calificación de la aportación.
A Research Article on “Alccofine Concrete”
Authors:   Pursuing Ph.D., Department of Structural Engineering, Jawaharlal Nehru Technological University Hyderabad, Telangana, India., Ashwini* K. , Rao Dr. P. Srinivasa ,   Professor, Deparment of Civil Engineering, JNTUH College of Engineering Hyderabad, Telangana, India.
Published: March 2020

After water the most widely used substance on Earth is concrete. Manufacturing of cement for concrete consumes vast quantities of energy and releases CO2 in the process, which can be conserved by using supplementary cementitious materials. These materials enable to use hundreds of millions of tons of byproduct materials thereby reducing waste disposal problem and replacing part of cement without deduction of equivalent engineering properties in binary blended or even ternary blended concrete. India is growing at an unprecedented pace and roads, bridges, dams, skyscrapers etc. are the need of an hour of the city. The Skyline is changing and with it demand for a sustainable, durable, eco-friendly and high performance concrete is increasing, to address this challenge a new generation micro fine pozzolanic material Alccofine can be used in concrete which opened the path for innovative research in the field of civil engineering. In this paper review on effect of recently developed Alccofine for sustainable development of concrete industry is studied.
PELATIHAN PERMAINAN EDUKATIF UNTUK ANAK BERBASIS KOMPUTER PADA GURU DAN SISWA DI TK KATOLIK MALAEKAT PELINDUNG KOTA MANADO
Authors: Tangkawarow Irene R H T
Published: March 2020

Computer as a media learning is owned by TK Katolik Malaekat Pelindung in Manado city. However, limited knowledge of software application for early childhood makes computer studies at TK Malaekat Pelindung Kota Manado are often ineffective implemented.This situation causes stimulation for the child's intelligence are not fully achieved due to application of the games which used is unfit to the stage of early childhood development. The aims of this activity are: (1) To provide knowledge and understanding of the educational games application that correspond to the teachers and students at TK Katolik Malaekat Pelindung in Manado City. (2) To provide training for teachers and students on how to operate GCompris application. GCompris application is qualified educational games application which consists ofattractive interface, easy to use, and variety games inside. This training uses resident expert method. Resident expert method is a method of training with guidance from expert in information systems (in this case, the expert on the application GCompris).
BANTUAN TEKNIS DESAIN LANSEKAP AIR TERJUN KINAAPIAN DESA BATU KECAMATAN LIKUPANG SELATAN
Authors: Moniaga Ingerid Lidia , Sembel Amanda Sutarni
Published: March 2020

Desa Batu merupakan salah satu Desa yang berada di wilayah Kecamatan Likupang Selatan Kabupaten Minahasa Utara Provinsi Sulawesi Utara. Desa Batu memiliki kekayaan alam yang mempesona, salah satunya yakni air terjun Kina-apiaan yang terletak di kawasan agrowisata buah.Jarak tempuh lokasi air terjun dari desa berjarak 2 Km. Desa Batu merupakan desa yang memiliki potensi sumberdaya alam yang menarik dan berpeluang dikembangkan sebagai obyek wisata baru. Potensi air terjun desa Batu menjadi sumber air bagi desa-desa disekitarnya, yang walaupun musim kemarau panjang tidak mengalami penurunan debit air, tetapi tetap tersedia untuk mencukupi kebutuhan masyarakat Desa Batu dan desa sekitarnya. Tujuan pelaksanaan kegiatan Pengabdian Kepada Masyarakat ini, yaitu memberi pembinaan dan pendampingan pada kelompok wisata desa Batu dalam Pengembangan Optimalisasi Ruang Luar atau Lanskap Air Terjun. Pembinaan dan pendampingan yang dilakukan untuk menangani beberapa masalah prioritas yang dilakukan dengan tahapandiantaranya : (1) Penyuluhan dan (2) Pelatihan. Target luaran yang ingin dicapai pada pembinaan dan pendampingan masyarakat desaBatu adalah (1) meningkatnya pengetahuan masyarakat dalam Pengembangan Potensi Sumber Daya Alam yang bisa dikembangkan sebagai daya tarik obyek wisata alam melalui desain-desain ruang luar atau lanskap wisata, (2) memahami dan melakukan kegiatanpraktek mengembangkan objek wisata alam, (3) memiliki kemampuan dalam mengelola lanskap wisata alam, (4) meningkatkan kualitas lingkungan desa, (5) menghasilkan artikel ilmiah yang dapat dipublikasikan pada seminar nasional.