bluuebunny/crossref_metadata_2025 huggingface dataset:
Improving the cooling system of ship equipment
Authors: Фомин А.В. , Фомин Е.В.
Published: September 2020

В статье представлены результаты исследования эффективности работы системы охлаждения корабельного оборудования и предложены конструктивные решения, позволяющие модернизировать данную систему. В настоящее время, для обеспечения нормальной работы корабельного оборудования, применяются системы охлаждения. В корабельных энергетических установках распространены системы водяного охлаждения из-за целого ряда преимуществ. К ним относится и высокая эффективность теплоотвода, и меньшее влияние внешней среды, а также более надежный пуск и возможность использования энергии отводимого тепла для других нужд. Одним из основных элементов в таких системах является расширительный бак гравитационного типа, обеспечивающий правильную циркуляцию дистиллированной воды во внутреннем контуре и расположенный в верхней точке системы. Однако практика испытаний и эксплуатации показала, что есть и серьезный недостаток в таком расположении бака – в случаи его перелива или разрыва может пострадать дорогостоящее оборудование, расположенное ниже. В связи с этим, определены направления по совершенствованию системы водяного охлаждения корабельного оборудования, которые связаны с применением расширительного бака мембранного типа и использования воздухоудаляющих клапанов.

The article presents the results of a study of the efficiency of the cooling system of ship equipment and offers design solutions that allow to modernize this system. Currently, to ensure the normal operation of ship's equipment, cooling systems are used. Water cooling systems are common in ship power plants due to a number of advantages. These include high efficiency of heat removal, less influence of the external environment, as well as more reliable start-up and the ability to use the energy of the heat being withdrawn for other needs. One of the main elements in such systems is a gravity-type expansion tank that ensures proper circulation of distilled water in the internal circuit and is located at the top of the system. However, the practice of testing and operation has shown that there is a serious drawback in this arrangement of the tank – in cases of overflow or rupture, expensive equipment located below may suffer. In this regard, the directions for improving the water cooling system of ship equipment, which are associated with the use of an expansion tank of the membrane type and the use of air-removing valves, have been identified.
Variable operating modes of the closed gas turbine plants for propulsive complexes in the underwater technics
Authors: Матвеенко В.Т. , Дологлонян А.В. , Очеретяный В.А.
Published: September 2020

Выполнение в условиях Арктики транспортных операций с преодолением ледовых полей, а также разведки, обустройства и эксплуатации подводных добывающих комплексов существенную роль будут играть суда и аппараты, оснащенные замкнутыми газотурбинными установками (ЗГТУ) различных схем в составе пропульсивных комплексов.
В работе проведен анализ ЗГТУ, часто работающих на частичных нагрузках в составе пропульсивных комплексов подводной техники. В качестве исходных данных представлены характеристики на номинальных режимах работы ЗГТУ с регенерацией теплоты (Р) и ЗГТУ с турбокомпрессорным утилизатором (ТКУ) и Р как наиболее перспективных для подводной техники. Одноконтурные ЗГТУ, работающие на углеводородном топливе с окислителем воздухом, в качестве рабочего тела используют смесь азота и продуктов сгорания топлива. Установлено, что как на номинальных, так и на частичных нагрузках экономичность ЗГТУ с ТКУ и Р выше, чем ЗГТУ с Р. ЗГТУ на частичных винтовых нагрузках более экономичны, чем на генераторных. ЗГТУ могут одновременно производить тепловую и электрическую энергию, обеспечивая высокую энергоэффективность установки в условиях эксплуатации.

Performance in the conditions of the Arctic of transport operations with overcoming ice fields, and also investigations, arrangement and operation of the underwater extracting complexes an essential role will be played by the vessels and apparatus equipped with the closed gas turbine plants (CGTP) of different schemes as a part of propulsive complexes.
In work the analysis of CGTP which are often working at partial loads as a part of propulsive complexes of the underwater technics is carried out. As basic data characteristics are presented on rated operating modes of CGTP with regeneration of warmth (R) and CGTP with the turbocompressor utilizer (TCU) and R as the most perspective for the underwater technics. Single-circuit CGTP, using hydrocarbon fuel with an oxidizer air, as a working body – the mix of nitrogen and products of fuel combustion. It is established that both on rated, and on partial loads profitability of CGTP with TCU and R is higher, than CGTP with R. CGTP on partial screw loads, are more economic than on generating. CGTP can product at the same time heat and electrical energy, providing high energy efficiency of plant under operating conditions.
Multiprocessor transport surveillance video system based on
"system on chip" technology
Authors: Фахми Ш.С. , Шаталова Н.В. , Вислогузов В.В. , Костикова Е.В.
Published: September 2020

В данной работе предлагаются математический аппарат и архитектура многопроцессорной транспортной системы на кристалле (МПТСнК). Выполнена программно-аппаратная реализация интеллектуальной системы видеонаблюдения на базе технологии «система на кристалле» и с использованием аппаратного ускорителя известного метода формирования опорных векторов. Архитектура включает в себя сложно-функциональные блоки анализа видеоинформации на базе параллельных алгоритмов нахождения опорных точек изображений и множества элементарных процессоров для выполнения сложных вычислительных процедур алгоритмов анализа с использованием средств проектирования на базе реконфигурируемой системы на кристалле, позволяющей оценить количество аппаратных ресурсов. Предлагаемая архитектура МПТСнК позволяет ускорить обработку и анализ видеоинформации при решении задач обнаружения и распознавания чрезвычайных ситуаций и подозрительных поведений.

In this paper, we propose the mathematical apparatus and architecture of a multiprocessor transport system on a chip (MPTSoC). Software and hardware implementation of an intelligent video surveillance system based on the "system on chip" technology and using a hardware accelerator of the well-known method of forming reference vectors. The architecture includes complex functional blocks for analyzing video information based on parallel algorithms for finding image reference points and a set of elementary processors for performing complex computational procedures for algorithmic analysis. using design tools based on a reconfigurable system on chip that allows you to estimate the amount of hardware resources. The proposed MPTSoC architecture makes it possible to speed up the processing and analysis of video information when solving problems of detecting and recognizing emergencies and suspicious behaviors
Problem solving for defining the optimal technical specifications for sea oil terminals
Authors: Горгуца Ю.В.
Published: September 2020

Описываются решения задач определения оптимальных технологических параметров морских нефтеперевалочных комплексов с использованием разработанной автором мелодики определения простоев судов с привлечением приоритетных моделей систем массового обслуживания и вычисления параметров помех по метеофакторам как потока случайных событий. К основным параметрам относятся: загрузка нефтепричалов, их количество, а также вместимость резервуарного парка припортовых нефтебаз.
В основу нахождения оптимума положен тот факт, что при росте объёма перерабатываемых грузов растёт и число обрабатываемых судов, а значит в условиях морской стихии штормов, ураганов и т.д. растут и их простои, то есть непроизводительные затраты. При увеличении числа причалов и объёмов резервуарного парка увеличиваются объёмы перевалки грузов, но и увеличиваются затраты на строительство и эксплуатацию причалов в первом случае и резервуаров во втором случае. Вычисление всех этих экономических категорий и получение их оптимальных соотношений и позволяет решить искомую задачу – нахождение оптимальных величин основных параметров нефтеперевалочных комплексов.
Ключевые слова: Нефтеперевалочный комплекс, простои судов., загрузка., число причалов, объём резервуарного парка, оптимальный параметр, доходы.

The article describes problem solving for defining the optimal basic technical specifications for sea oil terminals, using author’s methodic for measuring demurrage, using priority models of queueing theory and calculation of interference characteristics based on meteorological factors, interpreted as stream of random events. Basic characteristics are: dock loading, their quantity and capacity of reservoir park of maritime oil bases.
Optimum findings are based on a fact, which states that growth of processed goods amount leads to the growth of processed vehicles amount, which means that in conditions of sea hazards, storms, hurricanes, etc. demurrage - unproductive expenditures - will also rise.Growth of dock number and reservoir park capacity will lead to growth of processed goods capacity, but will also rise construction and operation costs for docks in the first case and reservoirs - in the second case. Calculation of all these economic evaluations and finding of their optimal ratio allows us to solve the basic task - to find optimal numbers for basic technical specifications for sea oil terminals.
Planning the behavior of an integrated unmanned aerial vehicle based on the division of complex tasks into subtasks in the state space
Authors: Мелехин В.Б. , Хачумов М.В.
Published: September 2020

В работе решается одна из актуальных проблем искусственного интеллекта связанная с разработкой модели представления и обработки знаний автономным интегральным беспилотным летательным аппаратом – роботом в процессе автоматического планирования целенаправленной деятельности в априори неописанных условиях проблемной среды. Предложенная модель базируется на применении различных сценариев в виде фрейм-микропрограмм поведения, фрейм-отношений и фрейм-действий, а также расплывчатых семантических сетей, обеспечивающих представление знаний безотносительно к конкретной предметной области. Это, в свою очередь, позволяет интегральному беспилотному летательному аппарату оснащенному манипулятором адаптироваться после посадки к априори неописанным условиям функционирования и решать на этой основе сложные задачи поведения.
Использованы два способа шаблонного разбиения сложных задач поведения в пространстве состояний на более простые подзадачи, решение которых определяется на основе типовых элементов представления знаний и определения нечеткого вложенного изоморфизма и равенства одной расплывчатой семантической сети в другую. Разработаны процедуры планирования, которые позволяют интегральному беспилотному летательному аппарату эффективным образом выполнить преобразование текущей ситуации априори неописанной проблемной среды в ситуацию, определяемую заданной ему целью поведения, и на этой основе организовать целенаправленную деятельность в труднодоступных и агрессивных для человека средах.

This work addresses one of the urgent problems of artificial intelligence related to the development of a model for the representation and processing of knowledge by an autonomous integrated unmanned aerial vehicle (robot) in the process of automatic planning of targeted activities in a priori undescribed conditions of a problem environment. The proposed model is based on the application of various scenarios in the form of frame-microprograms of behavior, frame-relations and frame-actions, as well as vague semantic networks that provide the representation of knowledge without reference to a specific subject area. This, in turn, allows an integrated unmanned aerial vehicle equipped with a manipulator to adapt after landing to a priori unknown operating conditions and to solve complex behavior problems on this basis.
Two methods of template partitioning of complex behavior problems in the state space into simpler subtasks are used, the solution of which is determined on the basis of typical elements of knowledge representation and definition of fuzzy embedded isomorphism and equality of one vague semantic network to another. Planning procedures have been developed that allow the integrated unmanned aerial vehicle to efficiently transform the current situation of an a priori undescribed problem environment into a situation determined by the goal of behavior, and on this basis to organize goal-seeking activities in hard-to-reach and aggressive environments for humans.
PENGARUH KEPEMIMPINAN, KEMAMPUAN DAN MOTIVASI DIRI TERHADAP KINERJA PERANGKAT DESA DI KECAMATAN SINGOSARI KABUPATEN MALANG
Authors: Rohmad Rohmad , Suswati Endang , Srihadiyati Srihadiyati
Published: September 2020

Abstract, The Effect of Leadership, Ability and Self-Motivation on VillagePerformance in Singosari District, Malang Regency. Government in the villagearea is an organization consisting of people who have a series of activities that areclear and carried out continuously to achieve organizational goals and this can berealized optimally if supported by the performance of village officials.Theobjectives of this study are: 1) To test and analyze leadership, ability, selfmotivation and performance of village officials 2) To test and analyze leadership,ability and self motivation simultaneously influence the performance of villageofficials 3) To test and analyze leadership, ability and self motivation partiallyinfluences the performance of village officials 4) To test and analyze the dominantinfluence between leadership, ability and self motivation on the performance ofvillage officials.This type of research is explanatory research, which explains thecausal relationship between research variables through hypothesis testing. Thepopulation used in this study is the village apparatus in Singosari District MalangRegency as many as 156 village apparatuses with a total sample of 61 respondents.The data analysis technique used in this study is multiple linear regressionanalysis.The results of the analysis show that leadership in Singosari DistrictMalang Regency is included in the good category, high employee ability, highemployee motivation and performance of village officials in Singosari DistrictMalang Regency included in the high category. There is an influence of leadership,ability and work motivation on the performance of village officials in SingosariDistrict, Malang Regency. Based on Beta Standardized Coeficients, workmotivation variables have a dominant influence on village officials in SingosariDistrict, Malang Regency.Keywords: Leadership, Ability, Self Motivation and Performance of VillageOfficials
Protruding hydrogen atoms as markers for the molecular orientation of a metallocene
Authors: Laflör Linda , Reichling Michael , Rahe Philipp
Published: September 2020

A distinct dumbbell shape is observed as the dominant contrast feature in the experimental data when imaging 1,1’-ferrocene dicarboxylic acid (FDCA) molecules on bulk and thin film CaF2(111) surfaces with non-contact atomic force microscopy (NC-AFM). We use NC-AFM image calculations with the probe particle model to interpret this distinct shape by repulsive interactions between the NC-AFM tip and the top hydrogen atoms of the cyclopentadienyl (Cp) rings. Simulated NC-AFM images show an excellent agreement with experimental constant-height NC-AFM data of FDCA molecules at several tip–sample distances. By measuring this distinct dumbbell shape together with the molecular orientation, a strategy is proposed to determine the conformation of the ferrocene moiety, herein on CaF2(111) surfaces, by using the protruding hydrogen atoms as markers.
Host–guest interaction of cucurbit[8]uril with oroxin A and its effect on the properties of oroxin A
Authors: Zeng Zhishu , Xie Jun , Luo Guangyan , Tao Zhu , Zhang Qianjun
Published: September 2020

In this study, we investigated the host–guest interactions between oroxin A (OA) and cucurbit[8]uril (Q[8]) using 1H NMR, MS, UV–vis and IR spectroscopy. The results showed that OA and Q[8] formed an inclusion compound (OA@Q[8]) with a molar ratio of 1:1 and a binding constant of 1.299 × 107 L·mol−1. In addition, the effect of Q[8] on the properties of OA was investigated through comparative experiments. The solubility of OA in water increased 22.47-fold when the concentration of Q[8] was 1 × 10−4 mol·L−1. Q[8] hardly affected the antioxidant capacity of OA, while the cumulative release of OA in gastric juice increased 2.3-fold after forming the inclusion compound with Q[8].
BUILDING TRUST IN FAMILY BUSINESS
Authors: Agustiono Agustiono , Wijaya Carlina
Published: September 2020

This research aims about how to build parent’s trust at Super Rasa Jaya Company. This is a family company engaged in bakery industry. This research was a descriptive qualitative. For data collecting technique, this study used interview and observations method. The data were validated though data validity test. Data triangulation was carried out by interviewing 6 informants who worked as entrepreneurs. Four of them have become a successful leaders of the next generation for more than 5 years. Two others were the owners of Super Rasa Jaya Company. This study found the owner of Super Rasa Jaya Company (head of the generation) had not been able to have their trust on the performance of their future generations yet. To gain that trust, the future generations had to work very hard. They were also required to provide evidence about their work. The next generation had to be able to demonstrate high performance in running and organizing the company. They had to able to produce a variety of new products and improve the quality of production in order to get the trust from the heads of the previous generation.
The Relationship between Entrepreneurial Self-Efficacy and Entrepreneurial Intention among University Students
Authors: Wijangga Jennifer , Sanjaya Ersa Lanang
Published: September 2020

This study aims to determine the relationship between self-efficacy in entrepreneurship with entrepreneurial intentions among university students, specifically for those who are in their final semester. As for its research method, this study uses a quantitative method to explain the relationship between variables by collecting data that has been distributed to 104 respondents. The research instrument for this study is a scale of entrepreneurial self-efficacy and an entrepreneurial intention scale, both of which meet reliability requirements. The result of the study states that there is a positive and significant relationship between self-efficacy entrepreneurship and entrepreneurial intentions.
Образы языка
в англо-американском авангарде. 1910-е годы
Authors: Фещенко В.В.
Published: September 2020

В статье приводится описание авангардных практик в англоязычной литературе ХХ века, которые в наибольшей мере актуализируют языковую проблематику. Утверждается, что рассмотрение контекстов зарождения авангардных движений в англоязычной литературе ХХ века позволило выявить наиболее динамичные контактные зоны, в которых соприкасались авторы, действующие в трансатлантическом треугольнике (Лондон — Нью-Йорк — Париж). На основе этих контекстов и контактов в разделе прослежены различные концепции языка и представления о языке («образы языка»), возникающие в англо-американском литературно-манифестарном авангардном письме на протяжении семи десятилетий (1910–1970-е годы).
1910-е годы — время расцвета авангардной культуры по всему миру. На трансатлантических рубежах зарождаются такие представления, как говорение на «двух языках» — непременное условие самоопровергающего авангардного высказывания с «динамизмом слова, образа, мысли
и действия» (в вортицизме); превращение языка как такового в главенствующий инструмент художественности, «приведение языка в движение» для вызывания новых состояний сознания (в литературном постимпрессионизме, симультанизме); идея новых «алфавитов» искусства и каталогизации слов и объектов (в дадаизме).

The article addresses avant-garde practices in XXth century English and American literature, which mostly deal with language issues. Consideration of the contexts of origin of avant-garde movements in Anglo-American literature of the twentieth century revealed the most dynamic contact areas in which the authors were operating in the transatlantic triangle (London — New York — Paris). On the basis of these contexts and contacts, we traced various concepts of language and ideas about language, emerging in the Anglo-American literary and manifesto avant-garde writing over seven decades (1910s ––1970s).
On the transatlantic frontiers, the 1910s — the heyday of avant-garde culture around the world — see the birth of concepts such as speaking in “two tongues” as an indispensable condition for a self-rejecting avant-garde utterance, with “the dynamism of the word, image, thought and action” (in Vorticism); the transformation of language as such into a dominant instrument of artistry, “setting language in motion” for evoking new states of consciousness (in literary Post-Impressionism, Simultaneism); the idea of new “alphabets” of art and the cataloging of words and objects (in Dadaism).
Using Outpatient Medical Records as a Method of Russian Language Training for Foreign Medical Students
Authors: Алексеева О.В. , Антонова Е.Я.
Published: September 2020

В статье рассмотрены основные задачи обучения иностранных граждан русскому языку в вузах России и обозначены языковые трудности, с которыми сталкиваются иностранные студенты при получении выбранной ими профессии. Главной проблемой иностранных студентов медицинских вузов России, получающих образование на языке-посреднике, является неуверенное владение русским языком, что не переживается ими как проблема в повседневной жизни, но сказывается на качестве прохождения обязательной практики в медицинских учреждениях страны. Одним из приемов, способных минимизировать неизбежное психологическое напряжение студентов-медиков и помочь им преодолеть языковую скованность во время живого общения с русскими врачами и пациентами, является использование на занятиях по русскому языку как иностранному медицинской карты амбулаторного больного. Заполнение карты проводится начиная с первого курса и продолжается на протяжении всех лет обучения русскому языку всякий раз, когда студенты изучают лексику по новой теме, связанной с тем или иным заболеванием. Главную трудность при заполнении карты амбулаторного больного представляет информация, связанная с жалобами больного. Заполнение этого пункта позволяет не только обобщить и закрепить изученный материал, но и перевести учебные диалоги «врач — пациент» в ситуацию, приближенную к реальному общению врача с больными.

The article describes the main tasks of teaching foreign citizens the Russian language at Russian medical universities and identifies the language difficulties that foreign students face when walking the hospitals. The challenges of communicating with patients at Russian hospitals are aggravated if the theoretical courses are delivered in English as an intermediary language. The discrepancy between the language of education and the language of the social environment is no problem in everyday communication, but affects the quality of compulsory practice in medical institutions in the country. One of the techniques that can minimize the inevitable psychological stress and lack of confidence experienced by foreign medical students and helps them to overcome language stiffness during authentic communication with Russian doctors and patients is the use of an outpatient's medical card in the Russian language classes. The card is filled in starting from the first year and continues being filled in throughout the years of Russian language training whenever students study new vocabulary related to
a particular disease. The main point in filling out the outpatient card is “Patient’s Complaints”. Filling in this item allows not only to review the familiar vocabulary but also to translate made-up “doctor-patient” dialogues into
a situation close to an authentic doctor-patient discourse. This will prepare students for the perception of live-sounding speech of native speakers who are not inclined to choose words that are understandable to students or to choose a speech tempo that is obviously comfortable for them.
Position of Tax Debt and Labour Right: Legal Review
Authors: Ramadayanti Sonya Liani
Published: September 2020

This study aims to explain the position of tax debt and labour right in bankruptcy. The legal research method used in this research using normative research, the legal rules and legal principles used related to bankruptcy law, tax law and labour law will be a reference in describing the problem of the position of tax debt and labour right in bankruptcy cases. The Taxation Law gives a special treatment and higher position on which the tax debt is first to be paid by the debtor and followed by the right borne by the separatist creditor. On the other hand, Law Number 13 of 2003 concerning Employment also regulates that the labour of the wages and other rights of the labour and positioned the labour as preferred creditor on which the privilege is given by the law. However, there are no statements in the Employment Law that stated the position of labour as a preferred creditor is higher than separatist creditor in the matter of bankrupt as what the Taxation Kaw expressed creditor is higher than the separatist creditor within the matter of tax payment. That distinction seems positioned the preferred creditor status of labour is lower than the position of separatist creditor on the matter of right fulfillment in bankruptcy. It is certainty that the statement which stated that the collection of tax debts have the right to preceded than other debts does not fit in this matter. Eventually, there is a decision of Constitutional Court Number 67/PUU-XI/2013 that provides a change within the position labour’s right on the matter of bankruptcy.
Physician and Patient Perceptions of Physical Touch in Primary Care Consultations in Lebanon: A Qualitative Study
Authors: Zeaiter Nancy , Ghandour Maher A. , Hayek Maryse , Farfour Imadeddine , Dabbous Ali , Hajj Hassan Mhamad Ali , Haidar Ahmad Houssain , Al Hussein Hussein , Abou-Mrad Fadi
Published: September 2020

Background: Verbal and non-verbal communications are an inherent component of physician-patient interactions. The psychological and physiological benefits of non-verbal communication such as gestures, expressions, eye contact, and particularly physical touch in healthcare have been previously explored by the scientific community, albeit insufficiently in the primary care context.

Objective: This study aims to address this gap by investigating physician and patient perceptions of expressive touch and its effect on patient satisfaction in primary care consultations in Lebanon.

Methods: We recruited 12 physicians and 13 patients and subjected them to audiotaped semi-structured interviews. We selected the patients from three hospitals, while physician responders were from the Faculty of Medical Sciences of the Lebanese University. We translated the survey instrument into Arabic and validated it using back translation sustained by a pilot study. We performed constant comparative qualitative analysis for obtained relevant data.

Results: Patient satisfaction and trust were associated with good verbal and non-verbal communication. Patient and physician responders recognized the benefit of empathy in building long-term relationships. Social and non-intimate expressive touches were positively perceived by patients, although within ethical and religious boundaries. Male physicians expressed clear apprehension for the use of touch, especially towards female patients, due to religious considerations. On the other hand, touch from female physicians was reportedly accepted by patients of both genders, while touch from their male counterparts was associated with more uneasiness.

Discussion and Conclusions: Religious concerns are prevalent among Lebanese physicians and patients alike. However, the use of reassuring physical touch is still a cornerstone of the patient-physician relationship in Lebanon, albeit with some limitations. The potential therapeutic effect of verbal and non-verbal communication is evident and warrants further investigation. Communication training efforts should emphasize the importance of religiously and ethically appropriate expressive touch in healthcare. This would serve to promote positive physician and patient perceptions of this practice and improve clinical communication and expressiveness.
ANALYSIS OF PEDESTRIAN AND BICYCLE SAFETY ON THE MOST ACCIDENTAL STREETS IN VILNIUS CITY
Authors: Skirmantė Miglė , Burinskienė Marija
Published: September 2020

The article examines the intersections of the most accidental streets of Vilnius, which are classified as black spots, and provides suggestions on how to rearrange them. The statistics of traffic accidents are analyzed to identify the most accident-prone streets. Dangerous intersections are identified by the black spot methodology. The technical parameters of the most accident-prone streets, the behavior of pedestrians and cyclists at intersections are analyzed. After analyzing the factors that determine the accident, solutions are proposed to help reduce the number of accidents involving pedestrians and cyclists.
EXPERIMENTAL TEST STAND OF A HEAT PUMP INTEGRATED IN AIR HANDLING UNIT
Authors: Frik Anton , Bielskus Juozas
Published: September 2020

Heat pumps are becoming increasingly popular and are playing an important role in the heat and cooling supply chain of buildings sector. Although more than 160 years have passed since the manufacture of the first heat pump, this technology, designed to recover low­potential heat energy and its useful use, can be called an innovative and efficient energy transformer. Air­to­water and air­to­air heat pumps are becoming more popular today due to their installation cost compared to ground­to­water heat pumps. It has been noticed that recently air­to­air heat pumps are more often installed in modern air handling units. The main energy transformers in these air handling units are the air­to­air heat pump and recovery heat exchanger. In the scientific literature little attention is paid to the thermodynamic cycle of the combination of the air handling unit and the heat pump, as well as the search for new possibilities to change and control it, this is a potential direction that can increase the efficiency of the whole system. To study the control capabilities of the unit, an experimental stand of the heat pump built into the ventilation unit is needed; it would help validate the results of theoretical studies and investigate the possibilities of expanding the control. Therefore, this paper presents a review of the experimental stands of non­integrated heat pumps and integrated heat pumps in air handling unit. Based on this review, the basic requirements for the installation of an experimental stand of a heat pump built into an air handling unit are formulated and a conceptual scheme of this stand is drawn up.
Análisis de la Producción Científica sobre Ecosistemas Empresariales
Authors: Ramírez-Campos Álvaro Fabricio , Marcelino-Aranda Mariana , Domínguez-Aguirre Luis Roberto , Camacho Alejandro D.
Published: September 2020

El enfoque de los ecosistemas empresariales (EE) puede ser una alternativa sostenible de las actividades económicas. El objetivo fue desarrollar un estudio bibliométrico sobre EE a partir de la Web of Science. Se encontraron 272 documentos publicados entre 1991 y mayo 2019, con picos de producción en 2007 y 2017. Se construyeron las redes temáticas, registros y productividad por fuentes, países, instituciones, palabra clave, h-index, co-autoría y co-citas. Se encontraron 587 autores, de 53 países. Las revistas más productivas tienen altos niveles de impacto. China produce el mayor número de publicaciones, pero Estados Unidos y Reino Unido tienen el mayor número de citas. Innovación y estrategia son temas relacionados con EE. Aunque existen diferentes perspectivas y la base conceptual de los EE está todavía en discusión, algunos países orientales ya están en la implementación. Los EE tienen un alto potencial de aplicación para el desarrollo sostenible a gran escala.
AR Mobile Application in Learning Hajj for Children in Malaysia: A Preliminary Study
Authors: Md Madi Nor Aida , Albakry Nur Safinas , Ibrahim Norshahila
Published: September 2020

Education is experiencing rapid revolution from the chalk to the computer. Since then, education and technology are moving forward with advanced technology. Furthermore, with the positive impact derived from previous research, Augmented Reality (AR) started to play a role in education either in learning or teaching. Thus, the aim of this paper is to explore the elements will be implemented in the development of Hajj AR mobile application for learning Hajj among the children in Malaysia. In the preliminary study, a survey using an open-ended and closed-ended questionnaire was conducted among experienced teachers. The findings from the survey revealed that the elements of AR could be implemented in the Hajj AR mobile application as an interactive learning tool. Thus, a Hajj AR mobile application will be developed by implementing the findings obtained in the preliminary study to evaluate the user-experience among the children who are using the AR mobile application when learning Hajj. In conclusion, this mobile application could attract and provide creative information to children in learning about Hajj through AR.
IoT for Monitoring and Control of Water Quality Parameters
Authors: Lezzar Fouzi , Benmerzoug Djamel , Kitouni Ilham
Published: September 2020

This work presents an Internet of Things (IoT) solution to facilitate real time water quality monitoring by enabling the management of collected data from electronic sensors. Firstly, we present in detail problems encountered during the used data collection process. We discuss after the requirements from the water monitoring quality standpoint, data acquisition, cloud processing and data visualization to the end user. We designed a solution to minimize technicians’ visits to isolated water tower, we designed sensors achieving a lifespan of several years. The solution will be capable of scaling the processing and storage resources. This combination of technologies can cope with different types of environments. The system also provides a notification to a remote user, when there is a non-conformity of water quality parameters with the pre-defined set of standard values.
A Holistic Model for Recognition of Handwritten Arabic Text Based on the Local Binary Pattern Technique
Authors: AL-Shatnawi Atallah , Al-Saqqar Faisal , Alhusban Safa’a
Published: September 2020

In this paper, we introduce a multi-stage offline holistic handwritten Arabic text recognition model using the Local Binary Pattern (LBP) technique and two machine-learning approaches; Support Vector Machines (SVM) and Artificial Neural Network (ANN). In this model, the LBP method is utilized for extracting the global text features without text segmentation. The suggested model was tested and utilized on version II of the IFN/ENIT database applying the polynomial, linear, and Gaussian SVM and ANN classifiers. Performance of the ANN was assessed using the Levenberg-Marquardt (LM), Bayesian Regularization (BR), and Scaled Conjugate Gradient (SCG) training methods. The classification outputs of the herein suggested model were compared and verified with the results obtained from two benchmark Arabic text recognition models (ATRSs) that are based on the Discrete Cosine Transform (DCT) and Principal Component Analysis (PCA) methods using various normalization sizes of images of Arabic text. The classification outcomes of the suggested model are promising and better than the outcomes of the examined benchmarks models. The best classification accuracies of the suggested model (97.46% and 94.92%) are obtained using the polynomial SVM classifier and the BR ANN training methods, respectively.
Corporate Social Responsibility and the Local Community Effect
Authors: Diez-Vial Isabel , Belso-Martínez Jose Antonio , López-Sanchez MªJosé
Published: September 2020

The objective of the chapter is to take a multilevel perspective to better understand how CSR practices are developed inside a cluster. The authors aim to describe how CSR practices are developed comparing both firm's characteristics (e.g., innovative capacity, marketing innovation, international activities) and local interactions inside the cluster. In particular, they evaluate how internal dynamics of the cluster, defined by the networks of relationships that are developed with supporting organizations, along with leading firms in the cluster, shape a new institutional framework that locally legitimates CSR practices.
Autocorrelação na previsão de lucros anormais: evidências para “outras informações” e testes sobre a terceira premissa do modelo de Ohlson
Authors: Nonaka Marcos André , Araújo Breno Valente Fontes , Camargos Marcos Antônio de
Published: September 2020

O modelo proposto por Ohlson (1995) se baseia na combinação dos lucros com o valor patrimonial contábil como base para a avaliação empresarial e traz outras perspectivas para a utilização do modelo de Avaliação pelo Lucro Residual. Nesse modelo, a variável vt é definida como “outras informações”, que não são capturadas pela Contabilidade, além dos lucros, que impactam os lucros anormais futuros. Trata-se de uma variável de difícil especificação, para a qual, na verificação do modelo, diversas proxies têm sido utilizadas por pesquisadores do tema. Neste contexto, assumindo que a autocorrelação de primeira ordem capture toda a informação sobre os lucros anormais, como descreve a terceira premissa de Ohlson (1995), o objetivo desta pesquisa é identificar e analisar a persistência e de que forma a inclusão de termos médias móveis como a variável de “outras informações” (vt) contribui para responder às questões levantadas sobre esta variável e melhora a utilização do Modelo de Ohlson na previsão de lucros anormais de empresas listadas na B3 (Brasil, Bolsa, Balcão). Foi utilizado o modelo ARIMA (Autoregressive Integrated Moving Average), com dados trimestrais, do tipo séries temporais, em uma amostra de 39 empresas, no período do primeiro trimestre 2002 ao quarto trimestre de 2015. As previsões foram realizadas após a verificação de que os parâmetros do modelo clássico foram atendidos. Constatou-se que os modelos de médias móveis foram capazes de, na média, reduzir a correlação serial e de prover previsões mais acuradas dos lucros anormais.
Microstructural Characterization of Ledeburitic Tool Steel after Sub-Zero Treatment and Tempering
Authors: Ptačinová Jana , Ďurica Juraj , Pašák Matej , Kusy Martin , Jurči Peter
Published: September 2020

Microstructural characterization of ledeburitic tool steel Vanadis 6 after sub-zero treatment and tempering has been examined. The samples were heat treated using following schedules: heating to the austenitizing temperature (TA= 1050 °C) in a vacuum furnace, hold at the final temperature for 30 min. and nitrogen gas quenching (5 bar). The sub-zero treatments consisted of immediate (after quenching) immersion of the material into the liquid helium (-269 °C), hold at the soaking temperature and removal the samples to be heated to a room temperature. Double tempering has been performed at the temperatures from the range 170 – 530 °C, whereas each tempering cycle was realized with a hold of 2 h. Typical heat treated microstructure of ledeburitic steels consists, besides of the martensitic matrix with certain amount of retained austenite, of several types of carbides – eutectic, secondary and small globular carbides. In sub-zero treated steel the amount of retained austenite is significantly reduced. The population density of small globular carbides increase as a result of sub-zero treating. Tempering of the material resulted in decrease in population density of small globular carbides with increasing the tempering temperature. The hardness of sub-zero treated material is higher than that of conventionally quenched one. Also, this tendency is preserved when the steel is low-temperature tempered. On the other hand, the hardness of conventionally quenched steel becomes higher than that of SZT one when tempered at the temperature of secondary hardening.
Sintering Problems during Preparation of Ti-Al-Si Alloys
Authors: Knaislová Anna , Novák Pavel , Průša Filip
Published: September 2020

Ti-Al-Si alloys are materials for high-temperature applications. They are characterized by low density, good mechanical properties and excellent resistance against oxidation in comparison with other commonly used alloys, for example nickel alloys or stainless steels. The preparation of Ti-Al-Si is very problematic due to high melting points of the intermediary phases, the high reactivity of melt with the melting crucibles and with the atmosphere in the furnace or formation of the cracks and pores during the process. Powder metallurgy seems to be a promising method for preparation of Ti-Al-Si alloys but there are still many complications. In this work, Ti-Al-Si alloys were prepared by unconventional powder metallurgy techniques and the aim of this work was to describe the problems during the sintering of these materials and their solution.
Fe-Me-B Diffusion Layers for Surface Modification of Carbon Steels
Authors: Mishigdorzhiyn Undrakh , Samaev Zhambal , Mosorov Vladimir , Ulakhanov Nikolay
Published: September 2020

Multicomponent boron-based diffusion layers are capable to provide a wider variety of surface improvements compared to pure boriding. In this research, we consider a way to increase mechanical properties of carbon steels by using two-component thermal-chemical treatment (TCT) such as boroaluminizing (B+Al), and boronickelizing (B+Ni). Diffusion treatment of steel surface was carried out by pack method in powder mixtures, and pastes, containing the above-mentioned elements and sodium fluoride as an activator. The exposure time was 3 hours, the treatment temperature was 950 °C. Pure boriding was conducted additionally to compare with two-component methods. The metallographic analysis revealed diffusion layers with a tooth-like structure after boriding and B+Ni. Typical composition of boride layer with iron boride FeB as an outer phase and Fe2B as an inner one was obtained after the first method. EDS analysis revealed a small amount of Ni (less than 1%) in boronickelized layer. Although XRD analysis revealed Ni2B, Fe3Ni3B besides iron borides and carboborides after B+Ni. Another structure was obtained after B+Al – namely a layered microstructure with outer softer iron aluminides and iron borides beneath. The thickest layer was obtained after boriding with the thickness of 140-160 μm, where higher value corresponds to low-carbon steel and vice versa. While for boroaluminizing the layer thickness was around 120-140 μm and for boronickelizing - 60-100 μm. Microhardness profiles differ significantly depending on the TCT method. For instance, initial high values followed by a drastic drop of hardness for boriding and boronickelizing. Wave type profiles characterize the microhardness distribution on boroaluminized samples. Wear tests indicated that samples with boride layer were the most wear resistant and the least resistant were the samples after B+Al. Fe-Me-B layers with the tooth-like structure are superior to the ones with the layered structure.
Heat Treatment of High-Strength 3D-Printed Maraging Steel
Authors: Strakosova Angelina , Vojtech Dalibor , Dvorský Drahomír
Published: September 2020

Maraging steels are interesting for research after heat treatment, from which name is derived "maraging" – martensite-aging. After solution annealing and precipitation hardening the X3NiMoCoTi 18-9-5 alloy has excellent mechanical properties (tensile strength reaches up to 2000 MPa and hardness is 50-55 HRC), it is ductile and well weldable. The advantage of these materials is the possibility to be manufactured not only by conventional methods but also by modern additive manufacturing (AM) methods. One of which is selective laser melting (SLM). In this paper, the influence of heat treatment on the final microstructure and mechanical properties of the 3D-printed X3NiMoCoTi 18-9-5 maraging steel is investigated.
Updated North Cyprus response status for COVID-19 in comparison with similar country sizes. Highlights on the importance of population per square meter
Authors: Serakinci Nedime , Savasan Ahmet , Rasmussen Finn
Published: September 2020

The COVID-19 pandemic is straining health systems worldwide. The World Health Organization has provided guidelines on a set of targeted and immediate actions that countries can use on a national, regional, and local level. Recommendations go from public hand hygiene stations, making face masks use obligatory, testing, and index finding which together with national closure of borders have been used to limit the disease so the countries' health care system can cope with the challenges. This is especially important as there seems to be an increased mortality rate even in countries normally regarded as well-functioning and having strong health system. In more susceptible countries this maybe even more important. The effect of these measures should be easier seen in small communities or countries. Societies have acted differently on when to apply the lockdown but most European countries have initiated lockdown after the first SARS-CoV-2 was diagnosed in their countries. With the COVID-19 pandemic and its economic consequences, it became especially important to re-evaluate the effect of response in light of a possible second wave. Yet, little is known about the effect of lockdown with respect to disease development and its handling. Hereby, we compare responses from relatively small 17 European countries including islands in three groups based on their population and report the response from North Cyprus in comparison to other small European countries. Our results indicate the importance of population per meter square, degree of isolation from others as well as social distancing, hygiene rules, timing of lockdowns in response to COVID-19 pandemic in small countries/ societies that are more susceptible for overwhelming their health system.
Menuju Pemulihan Kepemimpinan Gereja Berdasarkan Eksposisi Yesaya 42:1-9
Authors: Ronda Daniel
Published: September 2020

Sebagai organisasi, gereja dalam sejarahnya juga mengalami pasang surut.  Jika berbicara organi-sasi maka gereja seringkali mengalami perkembangan dan penurunan dari segi manajemen, di mana kepemim-pinan ditengarai menjadi penyebab utamanya. Ciri-ciri gereja mengalami masa-masa surut dapat terlihat dari adanya konflik, kelesuan rohani, ruti-nitas, stagnansi penurunan jumlah ke-anggotaan, penurunan keuangan, serta tantangan eksternal lainnya berupa penganiyaan dan kondisi masyarakat yang tertutup dan resisten terhadap Injil. Ini menjadi suatu siklus yang secara alamiah dialami gereja. Agung Gunawan juga menambahkan bahwa konflik yang ada dalam gereja dapat dilihat dari penurunan partisipasi jemaat, banyaknya keluhan dan ada-nya perubahan perilaku hamba Tuhan yang menjadi pasif dan mulai defensif.
ROH KUDUS SEBAGAI SUBJECT MATTER DALAM PEMBELAJARAN PENDIDIKAN KRISTEN
Authors: Simanjuntak Junihot M.
Published: September 2020

Tulisan ini bertujuan untuk memaparkan pentingnya memahami peran Roh Kudus yang lebih luas, terutama dalam pembelajaran pendidikan Kristen. Memakai metode deskriptif-analitis, penulis memaparkan peranan Roh Kudus sebagai subject matter dalam pembelajaran Pendidikan Kristen. Hasil studi: 1) Roh Kudus adalah pribadi Allah Tritunggal, Ia aktif hadir sebagai subyek dan sebagai obyek yang dipelajari dalam pembelajaran Pendidikan Kristen, hal itu diakui oleh Tuhan Yesus sendiri, para rasul, dan bapa-bapa gereja, serta para praktisi pendidikan Kristen; 2) Roh Kudus mendiami guru Kristen  dan peserta didik untuk membentuk manusia yang memiliki kekuatan spiritual, pengendalian diri, pendewasaan kepribadian, kecerdasan, akhlak mulia, serta keterampilan yang diperlukannya.