bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALYSIS OF THE PROCESS OF SELFSIMILARITY OF NETWORK TRAFFIC AS AN APPROACH TO DETECTING CYBER ATTACKS ON COMPUTER NETWORKS
Authors: КОТЕНКО И.В. , КРИБЕЛЬ А.М. , ЛАУТА О.С. , САЕНКО И.Б.
Published: July 2021

Предложен подход кобнаружению кибератак на компьютерные сети, основанный на выявлениианомалий в сетевом трафике путем оценки свойства самоподобия. Рассмотрены методы выявления долговременной зависимости в фрактальном броуновском движении и реальном сетевом трафике компьютерных сетей. Показано, что трафик телекоммуникационной сети является самоподобной структурой и его поведение близко к фрактальному броуновскому движению. В качестве инструментов при разработке данного подхода были использованы фрактальный анализ и математическая статистика. Анализируются вопросы программной реализации предлагаемого подхода и формирования набора данных, содержащего сетевые пакеты компьютерных сетей. Экспериментальные результаты, полученные с использованием сгенерированного набораданных, продемонстрировали наличие самоподобия у сетевого трафика компьютерных сетей и подтвердили высокую эффективность предлагаемого подхода: он позволяет обнаруживать кибератаки в реальном или близком к реальному масштабе времени.

The paper discusses an approach to detecting cyber attacks on computer networks, based on identifying anomalies in network traffic by assessing its self-similarity property. Methods for identifying long-term dependence in fractal Brownian motion and real network traffic of computer networks are considered. It is shown that the traffic of a telecommunication network is a self-similar structure and its behavior is close to fractal Brownian motion. Fractal analysis and mathematical statistics were used as tools in the development of this approach. The issues of the software implementation of the proposed approach and the formation of a data set containing network packets of computer networks are considered. The experimental results obtained using the generated dataset demonstrated the existence of selfsimilarity in the network traffic of computer networks and confirmed the fair efficiency of the proposed approach. The proposed can be used to quickly detect cyber attacks in real or near real time.
ADAPTATION OF SOLID MODELS FOR SOLVING HEAT ENGINEERING PROBLEMS USING CAD CALCULATION MODULES
Authors: РЕПНЕВА А.И. , ПОСТНИКОВА В.Н.
Published: July 2021

Показаны основные недостатки традиционных подходов к решению теплотехнических задач посредством аэродинамического моделирования при помощи ЭВМ для твердотельных моделей. Определены пути повышения эффективности и снижения трудоемкости проведения подобных расчетов благодаряметодике поэтапногоупрощения (адаптации) твердотельной геометрии. Произведена оценка экономии затрат системных ресурсов и машинного времени при использовании методики поэтапного упрощения твердотельной геометрии. Выявлена возможность расчета более сложных моделей при ограниченных аппаратных ресурсах за счет предложенного подхода.

The main disadvantages of traditional approaches to solving thermal engineering problems by means of aerodynamic modeling using a computer for solid models are shown. The ways of increasing efficiency and reducing the labor intensity of such calculations due to the method of step-by-step simplification (adaptation) of solid geometry are determined. Cost savings of system resources and machine time were estimated using the technique of step-by-step simplification of a solid geometry. The possibility of calculating more complex models with limited hardware resources was revealed due to the proposed approach.
ИДЕНТИФИКАЦИЯ УСТРОЙСТВ И СИСТЕМ УЗКОПОЛОСНЫХ БЕСПРОВОДНЫХ СЕТЕЙ СВЯЗИ ИНТЕРНЕТА ВЕЩЕЙ. ЧАСТЬ II
Authors: BORODIN A.S. , KIRICHEK R.V. , SAZONOV D.D. , ROZHKOV  M.A. , KOLESNIKOV  A.V. , BIRMAN  A.A. , ROGDEV  A.N.
Published: July 2021

A description of an identification system for IoT devices based on the Digital Object Architecture (DOA) is given. An analysis of alternative identifiers is given and the advantages of DOA for both identification and anti-counterfeit purposes are shown. The second part of the article presents the implementation of DOA technology on a specific example - the device identification system in the Russian transport industry. It is also developed a simulation model of a network fragment. A series of optimization experiments are performed.

Представлено описание системы идентификации на базе архитектуры цифровых объектов (Digital Object Architecture - DOA), которая в настоящее время рассматривается в качестве приоритетной для идентификации устройств и приложений интернета вещей. Приведен анализ альтернативных идентификаторов и показаны преимущества DOA какдля за -дач идентификации, так и для борьбы с контрафактом. Во второй части статьи представлена реализация данной технологии на конкретном примере - системе идентификации устройств в транспортной отрасли России, а также разработана имитационная модель фрагмента сети, на базе которой анализировались различные параметры функционирования системы. Дано базовое описание разработанной имитационной модели и проведена серия оптимизационных экспериментов с целью улучшения производительности текущей системы.
HAZARD WARNING SYSTEM WITH GSM-CHANNEL
Authors: НЕСТЕРОВ С.В. , ТРУБЕНКО С.Е.
Published: July 2021

Рассмотрены элементы конструкции и принципы работы системы оповещения, которая в случае несанкционированного вторжения на территорию охраняемого объекта обеспечивает отправку тревожного сообщения по GSM-каналу. Представлен действующий макет системы оповещения.

The article describes elements of design and principles of operation of the warning system, which in case of unauthorized intrusion into the territory of the protected object provides sending of an alarm message via GSM-channel. The active model of the hazard warning system is presented.
NEW IP, FROM 5G TO 6G: DO WE NEED A PARADIGM CHANGE?
Authors: БОРОДИН А.С. , РОЖКОВ М.А. , КИРИЧЕК Р.В. , КУЧЕРЯВЫЙ А.Е.
Published: July 2021

Представлено описание подходов к разработке концепции нового протокола для сетей пятого и последующих поколений, условно названного New IP. Показана актуальность данной концепции и особенности функционирования такого протокола для обеспечения межсетевого взаимодействия. Рассматриваются возможные сферы применения и исследовательские задачи, которые предстоит решить для внедрения концепции New IP.

The article describes approaches to developing the concept of a new protocol for networks of the fifth and subsequent generations, conventionally called New IP. The relevance of this concept and features of the functioning such a protocol for ensuring internetwork interaction are shown. Possible application areas and research tasks to be solved for implementation of the New IP concept are considered.
SYNTHESIS OF A SIGNAL-INVARIANT ALGORITHM FOR ESTIMATING THE AVERAGE POWER OF A GAUSSIAN NOISE OF UNKNOWN INTENSITY
Authors: БОЛДЫРЕВ А.А. , БУБЕНЬЩИКОВ А.А. , КЛЮЧНИКОВА И.Д.
Published: July 2021

Решается актуальная задача тестирования канала приема радиосигнала с точки зрения помеховой обстановки. Приводятся результаты синтеза алгоритма оценивания средней мощности совокупной гауссовой помехи в канале приема с неизвестной интенсивностью, инвариантного к наличию сигнала в нем, и варианта технического решения, реализованного на его основе. Новизна предлагаемого подхода заключается в применении автокорреляционной и корреляционной обработки входного процесса в виде аддитивной смеси сигнала неизвестной формы и гауссовой помехи для измерения априори неизвестной средней мощности помехи. Измерение основано на различии в дисперсиях помеховой (шумовой) составляющей на выходах автокорреляционного и корреляционного каналов обработки. Это различие позволяет алгоритмически путем вычитания определить неизвестную среднюю мощность помехи.

The actual problem of testing the radio signal reception channel from the point of view of the interference environment is solved. The results of the synthesis of an algorithm for estimating the average power of the aggregate Gaussian interference in a receiving channel with an unknown intensity, invariant to the presence of a signal in it, and a variant of a technical solution implemented on its basis are presented. The novelty of the proposed approach consists in the application of autocorrelation and correlation processing of the input process in the form of an additive mixture of a signal with unknown shape and a Gaussian noise for measurement an a priori unknown average noise power. The measurement is based on distinction in dispersions of an interfering (noise) component on outputs of autocorrelated and correlative processing channels. This distinction allows us to determine the unknown average interference power.
DESIGN OF COMPLEX BAND-PASS FILTERS BASED ON PROGRAMMABLE ANALOG INTEGRATED CIRCUITS
Authors: ГРЕБЕНКО Ю.А. , АУНГ КО.М.
Published: July 2021

Приведена методика расчета и реализации комплексного полосового фильтра с заданными координатами полюсов НЧ-прототипа на базе ПАИС фирмы Anadigm. Моделирование проводилось с помощью САПР AnadigmDesigner2. Описан пример реализации на ПАИС комплексного полосового фильтра Баттерворта 3-го порядка.

This article describes the method of calculation and implementation of a complex band-pass filter with the specified coordinates of the poles of the LF-prototypes based on field programmable analog array (FPAA) of company Anadigm. Modeling was carried on with the help of CAD AnadigmDesigner2. An example of implementing a complex third-order Butterworth filter on FPAA is described.
UNIFICATION OF ON-BOARD SATELLITE COMMUNICATIONS EQUIPMENT
Authors: ТИТОВ Д.А.
Published: July 2021

Рассмотрены структура и схема процесса унификации бортовой аппаратуры спутниковой связи,показан подход к оценке сокращения времени разработки этой аппаратуры, рассмотрен подход к стандартизации с использованием стандартов ANSI/VITA 65.0 и VITA 46.

In this article the following topics have been reviewed: the structure and scheme of unification process of on-board satellite communication equipment; the approach to evaluate on-board satellite communication equipment design time reduction; the approach to use ANSI/ VITA 65.0 and VITA 46 standards while standardization.
AUTOMATIC ESTIMATION OF SPEECH MESSAGE QUALITY IN MOBILE COMMUNICATION SYSTEMS USING MACHINE LEARNING ALGORITHMS BASED ON THE CONSTRUCTION OF DECISION TREES
Authors: ВИНОГРАДОВ А.Н. , СУРМАЧЕВ А.С.
Published: July 2021

Предлагается метод выявления характерных искажений речевого сигнала в системах подвижной радиосвязи в условиях априорной неопределенности относительно условий приема сигнала и его качества. Предлагаемый метод базируется на использовании алгоритмов машинного обучения, в частности, аппарата построения деревьев решений и их множеств. Приводится подробное описание используемых для классификации признаков сигналов, а также характеристики обучающей и контрольной выборок. Приведены фрагменты кода программ, отражающие основные ключевые моменты их работы, и экспериментально полученные результаты.

It is proposed a method of detecting specific distortions in mobile communications systems under conditions of a priori uncertainty of signal reception conditions and its quality. The proposed method is based on the use of machine learning algorithms, in particular construction of decision trees and their ensembles. A detailed description of signal features used for classification, as well as characteristics of training and control samples, are provided. Program code fragments that implement basic working stages and experimentally obtained results are given.
EXPERIENCE IN USING DOMESTIC MODEMS OF SATELLITE EARTH STATONS
Authors: БЕЛОВ А.С. , АБАКУМОВА А.Ю.
Published: July 2021

Анализируются важнейшие функции спутниковых модемов, которые во многом определяют характеристики современных земных станций спутниковой связи (ЗССС). Приводится обзор разработанных и выпускаемых ФГУП НИИР ЗССС, использующих отечественные спутниковые модемы. Рассматриваются основные характеристики этих модемов, их отличительные черты, а также результаты практического применения. Сформулированы прогнозные тенденции развития спутниковых модемов для решения задач НИИР.

The most important functions performed by satellite modems of modern satellite earth stations (SES) are analyzed. The SES developed and manufactured by FSUE NIIR in which domestic satellite modems are used are briefly described. The main characteristics of these modems, their distinctive features, as well as the results of practical application, are considered. Predicted trends in the development of satellite modems for solving the tasks of FSUE NIIR are determined.
ON OVERCOMING THE CONTRADICTIONS BETWEEN THE NEW ITU INDEX AND THE ICT DEVELOPMENT INDEX
Authors: РЕЗНИКОВА Н.П. , АРТЕМЬЕВА Г.С. , КАЛЮГА Д.В.
Published: July 2021

Анализируются модели,подтверждающие тезис об отсутствии существенных противоречий между принятым в 2017 г. Индексом развития ИКТ (IDI), вобравшим в себя 14 показателей по трем субиндексам («Доступ к ИКТ», «Использование ИКТ», «Навыки работы с ИКТ»), и Новым индексом МСЭ (НИ МСЭ), концепция которого (5Ps) основана на подходе, связанном с оценкой достижения Целей устойчивого развития (ЦУР)ООН под воздействием электросвязи/ИКТ. Предложены модели НИ МСЭ, позволяющие выполнять требования Резолюции 131 (Пересм. Дубай, 2018г.)Полномочной конференции МСЭ к IDI и в то же время трансформировать IDI для оценки достижения ЦУР.

The article presents and analyzes the models that make it possible to assert the thesis about the absence of significant contradictions between the ICT development index (IDI), adopted in 2017, which included fourteen indicators for three subindices: "Access to ICTs", "Use of ICTs", "ICT skills", and the new ITU Index (ITU NI), the concept of which (5Ps) was based on the approach related to assessing the achievement of the UN Sustainable Development Goals (SDGs) under the influence of telecommunications/ICTs. Index models are proposed to meet the requirements of Resolution 131 (Rev. Dubai, 2018) of the ITU Plenipotentiary Conference (PC) on IDI, and at the same time transform it to assess the achievement of the SDGs.
AN EXAMPLE OF BUILDING A SATELLITE BROADBAND ACCESS SYSTEM USING NON-GEOSTATIONARY SATELLITES
Authors: МЕНТУС О.В. , УВАРОВ С.С. , ДЬЯКОВА Е.А.
Published: July 2021

Рассмотрены проектный облик построения отечественной спутниковой системы доступа к широкополосным услугам связи с использованием спутников на низкой околоземной орбите. Проведен анализ частотных заявок и предложены частоты для реализации системы.

The design appearance of the domestic satellite system for broadband access services using low-earth-orbit satellites is considered. The analysis of radio frequency requests is carried out and radio frequencies are proposed for the implementation of the system.
DATA PROCESSING OF AN INTEGRATED NAVIGATION SYSTEM BY THE KAUFMAN FILTER
Authors: ДЕМЬЯНОВ В.В. , ШУСТОВ И.С. , ЧИРОВ Д.С.
Published: July 2021

Приведены результаты работ, выполненных в рамках исследования вопросов разработки унифицированной навигационной системы робототехнических комплексов. Рассмотрена возможность применения фильтра Кауфмана для обработки данных навигационной системы наземного робототехнического комплекса. Приводится анализ применимости фильтра Кауфмана для решения задачи фильтрации данных инерциальной навигационной системы.

This article presents the results of the development of the unified navigation system of robotic complexes. The possibility of using the Kaufman filter for processing of data of a navigation system of a ground robotic complex is considered. An analysis of the applicability of the Kaufman filter for solving the problem of filtering data of the inertial navigation system is presented.
Turismo y política pública argentina a partir de la Ley 25.997/05
Authors: Luciano Magalí Florencia , Miranda María Belén
Published: July 2021

El presente trabajo tiene como objetivo indagar en la política pública turística argentina, a partir de la aplicación de la Ley Nacional de Turismo 25.997. Partiendo de un estudio documental, el análisis se focaliza en el redireccionamiento de la política pública turística que modificó ampliamente, en 2005, el posicionamiento del estado nacional respecto del sistema turístico nacional. Actualmente, luego de más de una década, la norma sobre la que se estructura la actividad parece mostrar ciertos signos de agotamiento, frente a una coyuntura influenciada por factores exógenos que, con el paso de los años, configuraron un escenario cada vez más caótico, desafiante y desordenado. Consecuentemente, este artículo realiza un análisis general, identificando éxitos y fracasos como también alcances y límites de la política pública nacional de esta compleja actividad en constante transformación y redefinición.
Perspectiva de género(s) y feminismos en el campo de las Relaciones Internacionales.
Authors: Di Giorgio Florencia , Sanchez Leandro , Jacques Mariana
Published: July 2021

Las perspectivas críticas feministas en el campo de las Relaciones Internacionales aún permanecen en los márgenes de la disciplina, en pugna con los discursos y posiciones epistémicas ortodoxas del Norte Global, latitud que dio nacimiento a la disciplina y desde donde se exporta la mayor parte del corpus teórico.
Este trabajo se sitúa en los estudios críticos sobre dependencia académica para analizar las formas en que las perspectivas de género(s) y los feminismos circulan en y desde los países de Iberoamérica en el ámbito de las Relaciones Internacionales.
Bajo esta premisa, en esta primera etapa nos propusimos describir cuantitativamente las particularidades de la circulación del conocimiento en el Sur y plantear si puede hablarse -o no- de una comunidad epistémica con reivindicaciones y conceptualizaciones propias. Para tal fin, abordamos los artículos con perspectiva de género(s) (447) publicados en las revistas iberoamericanas de Relaciones Internacionales (236) de acceso abierto indexadas en la plataforma Latindex (13.809) durante los últimos diez años (2009-2019).
Adherencia a las intervenciones dietéticas en pacientes con diabetes mellitus tipo 2: una revisión narrativa de la literatura
Authors: Orozco-González Claudia N. , Vieyra-Angeles Carolina , Rojo-López Marina Idalia , Aguilar-Aguayo Leticia , Camacho-López Saby
Published: July 2021

Introducción: la diabetes mellitus tipo 2 (DM2) es uno de los principales problemas epidemiológicos debido a la naturaleza compleja de la enfermedad. En el plano de atención individual, es necesario llevar a cabo intervenciones nutricionales y promover hábitos de alimentación saludables, utilizando herramientas que permitan una adecuada adherencia a dichas medidas. El objetivo de esta revisión es identificar, a través del análisis de la literatura, las estrategias dietéticas para el control de la DM2 y compararlas según su eficacia para lograr la adherencia del paciente. Métodos: se consultaron las bases de datos Pubmed, Scielo, Google Académico, Ovid y Web of Science con las palabras clave. Resultados: la educación a largo plazo provee conocimientos que el paciente puede utilizar como forma de empoderamiento para la toma de decisiones; sin embargo, estos estudios demostraron cómo la libertad de elegir los alimentos disminuye de manera considerable la adherencia nutricional. La intervención a través de menús establecidos o un control estricto genera buenos resultados a corto plazo, pero apenas logran la consciencia que permitirá al paciente ser responsable de la enfermedad. Este tipo de intervención parece hacer poco para ayudar al individuo a analizar la magnitud e importancia de modificar los hábitos dietéticos de forma saludable a largo plazo. Conclusión: la intervención constante a través de la educación en nutrición es efectiva en la tarea de crear adherencia de los pacientes con DM2 a tratamientos nutricionales a largo plazo. Palabras clave: intervenciones dietéticas, diabetes mellitus, adherencia, alimentos y educación en nutrición, evaluación, eficacia.
Scaffolding Social Presence in MOOCs
Authors: Gamage Dilrukshi
Published: July 2021

Massive Open Online Courses (MOOCs) often lack valuable social presences that provide learners opportunities to interact and to be feel as a real person. This subjective experience of being present with a “real” person and having access to their thoughts and emotions increase the learning experience. Although MOOCs provide forums for such interactions, they are often populated with cognitive types of presence limiting social presence. Meaningful social interactions are challenging in MOOCs due to scale and design limitations. This research presents a conceptual framework of 4 phases: Cluster, Orient, Focus and Network to scaffold better social interaction in MOOCs. The framework introduce a re-design of interactions in MOOC forums space — leverages clustered groups by creating many communities in forums spaces with a community leader facilitating the conversations leading social presence. It also provides a community structure with orientation, focus to work in the community and better networking opportunities. An initial integration of the framework to a real MOOC with 27, 554 students provides preliminary results indicating effective scaffolding ofsocial presence in MOOC communities, yet the framework poses challenges relying the social interactions centered upon community manger. However, the study opens new directions to leverage communities in MOOCs and potential to scale.
Analisis Faktor yang Mempengaruhi Tindakan Pencegahan Penularan HIV oleh ODHA Pada Orang lain
Authors: Faisal Nur , Azis Rahmawati , Syafar Muhammad
Published: July 2021

Pendahuluan; HIV menjadi penyebab utama menurunnya sistem imun sekunder, yang lambat laun mengarah pada stadium AIDS. HIV dan AIDS merupakan pandemi, menyerang jutaan penduduk di dunia, pria, wanita bahkan anak-anak sehingga perlu dilakukan tindakan pencegahan penularan HIV. Tujuan; mengetahui faktor-faktor yang mempengaruhi tindakan pencegahan penularan HIV oleh ODHA. Metode; penelitian kuantitatif deskriptif analitik dengan desain cross sectional, dengan analisis data uvivariat, bivariat dan multivariat. Hasil; menunjukkan bahwa faktor yang berhubungan dengan tindakan pencegahan penularan HIV oleh ODHIV adalah lama mengidap HIV (p=0,000) dan Pengetahuan (p=0,000). Pada analisis regresi logistik ganda diketahui bahwa lama mengidap HIV (p=0,007 95% CI: 0.014-0.517) dan pengetahuan (p=0,014 95% CI: 1.343-14.451) merupakan faktor yang paling mempengaruhi tindakan pencegahan penularan HIV. Kesimpulan; bahwa faktor yang paling mempengaruhi tindakan pencegahan penularan HIV oleh ODHA adalah Pengetahuan dan Lama mengidap HIV.
Plasma wave after HIPIMS pulse: time-resolved diagnostic of HIPIMS copper plasma using a homemade Langmuir probe
Authors: Chau Kam-Hong , Kawai Yoshinobu , Kan Chi-Wai , Syu Jia-Lin , Liu Yen-Chun , Chen Ying-Hung , Liang Chen-Jui , He Ju-Liang
Published: July 2021

A homemade Langmuir probe was constructed to investigate the plasma characteristics of high power impulse magnetron sputtering (HIPIMS) for copper deposition. Five sets of HIPIMS power delivery parameters were selected for use in a constant-current mode with different pulse widths (T
on) and discharge frequencies (f) at a working argon pressure of 0.16 Pa. Waveforms of the HIPIMS cathode current remained constant during the pulse. The time-resolved plasma properties were examined to explore HIPIMS physics. At the end of the HIPIMS pulse, the plasma density increased and built to a second peak. Double peaks were observed in the ion and electron densities for all tested HIPIMS parameters. We discuss the mechanism responsible for the generation of the second peak, which is based on the collisions of highly energetic electrons and metastable atoms that have long lifetimes. Lifetime of the electron and ion densities after the second peak are estimated in terms of exponential decay. The lifetimes range between 30 and 40 μs.
Preparation of functional thin films with elemental gradient by sputtering with mixed powder targets
Authors: Kawasaki Hiroharu , Ohshima Tamiko , Yagyu Yoshihito , Ihara Takeshi , Mitsuhashi Kazuhiko , Nishiguchi Hiroshi , Suda Yoshiaki
Published: July 2021

Functional thin films with a compositional gradient were deposited by a sputtering method with mixed powder targets. The composition ratio of nickel (Ni) and stainless steel (SUS304) was varied over the film thickness using several types of nickel oxide and stainless steel mixed powder targets. Our results indicate that mixed nickel-doped stainless-steel thin films were successfully prepared on both stainless-steel and Si substrates and the mixing ratio was controlled by the composition of the nickel oxide and stainless steel mixed powder.
platform; warehouse; storage facilities; special equipment; electric traction; electric trolleys; electric transport
Authors: Altoukhov А. V. , Khar’kov V. Р.
Published: July 2021

Aim. This study aims to present the results of the conducted analytical research (review)  of the market of electric trolleys for warehouse purposes and a review of the Russian market of warehousing property.

Tasks. The author examines the state of the Russian and international markets of warehouse trolleys along with a brief overview of the domestic market of warehousing property, which is directly related to the main topic, formulating conclusions about the advisability of including electric trolleys for warehousing purposes into a potential domestic electric transport platform.

Methods. The author uses the methods of analysis and synthesis of information posted on the Internet, the method of expert evaluation, as well as materials of Russian and foreign authors.

Results. It is established that electric trolleys for warehousing purposes are developed by manufacturing companies within the framework of a particular platform and that this is a promising market both on the global and national (Russian) scale. The study substantiates the urgency of creating a Russian platform for electric transport that would incorporate special warehouse equipment.

Conclusions. The ﬁeld of electric trolleys for warehousing purposes is potentially attractive from an economic perspective, i.e. the market for this equipment has good growth prospects in Russia and globally. The scientiﬁc and technical potential of the Russian Federation makes it possible to successfully create and implement a domestic platform for electric transport that would include an equipment division for warehousing needs. The presented study will be useful to anyone interested in electric transport, warehouse logistics, and platform solutions in these ﬁelds.
Lenguaje, argumentación y reflexión. Aproximación a procesos de lectoescritura en buenaventura
Authors:   Universidad del Valle, Cuenca Montenegro Yurley , Herrera Perlaza Sileni ,   Universidad de Manizales, Riascos Micolta Dagoberto ,   Universidad del Pacífico, García Sarmiento José Fernando ,   Universidad del Valle, Hincapié Londoño Henry ,   Universidad del Pacífico, Guzmán Laura ,   Universidad de Manizales, Arroyo Angulo José Edward ,   Universidad del Pacífico
Published: July 2021

El presente texto es una compilación de cinco artículos que dan muestra de un proceso investigativo del área de lenguaje, promoción de lectura, pensamiento crítico, didáctica de la lectoescritura de la Universidad del Pacífico (Unipacifico) y, un estudio de niveles de argumentación con jóvenes de educación media que posteriormente continuaron sus estudios universitarios en la alma mater.
Competencias, hábitos y prácticas de lectoescrituras en estudiantes de primer semestre - Universidad del Pacífico periodo 2015-1
Authors:   Universidad del Valle, García Sarmiento José Fernando , Hincapié Londoño Henry ,   Universidad del Pacífico
Published: July 2021

Desde la concepción constructivista que reconoce la fuerza de las interacciones sociales de los contextos no escolares y escolares, la apropiación de competencias en el caso de la lectura y la escritura, este artículo presenta los resultados de investigación, de diseño mixto a partir de un instrumento aplicado a 405 estudiantes de la cohorte 2016-1 de la Universidad del Pacífico en Buenaventura, donde se realizó una aproximación a los hábitos, las prácticas y algunas de las competencias de lectura y escritura como parte de la identificación del perfil de ingreso de estos estudiantes a las distintas carreras de la institución. Resalta en los hallazgos una relación sociolingüística entre los hábitos, las prácticas, el tipo de textos que abordan y las competencias de lectura y escritura que se evidenció en la población objeto de estudio.
PENGARUH EKSTRAK ETANOL RIMPANG KUNYIT (Curcuma Longa)
TERHADAP PEMERIKSAAN HEMOSTASIS DARAH
Authors: Roslaeni Rini , Maha Sakti Raya Agung , Zulfahmi Mochamad Fathan , Rizky Yuniar Maharany , Sovia Evi , Harihardjaja Wahyu , Susanti Anita Liliana
Published: July 2021

Kunyit (Curcuma longa) merupakan tanaman obat yang banyak terdapat di Asia, sering
digunakan sebagai bumbu ataupun obat tradiosional. Tanaman kunyit memiliki akar
(rimpang) berwarna kuning tua dan mengandung senyawa penting, diantaranya curcumin dan ar-tumeron yang berperan dalam menghambat pembekuan darah. Saat ini salah satu penyebab utama morbiditas dan mortalitas di dunia adalah penyakit kardiovaskular seperti stroke dan penyakit jantung koroner. Potensi kunyit yang dapat bersifat antikoagulan diharapkan menjadi alternatif pencegahan penyakit kardiovaskular. Tujuan penelitian untuk mengetahui efek ekstrak etanol rimpang kunyit secara in vivo terhadap bleeding time (BT), dan secara in vitro
terhadap prothrombin time (PT) dan retraksi bekuan. Uji in vitro menggunakan sampel darah manusia yang ditambahkan ekstrak rimpang kunyit, sedangkan uji in vivo dengan cara memberikan ekstrak rimpang kunyit secara per oral terhadap mencit. Pemeriksaan PT menggunakan metode tilt tube, pemeriksaan retraksi bekuan menggunakan whole blood lalu didiamkan selama 2 jam dan dihitung sisa serumnya (volume serum/volume darah awal x100%), sedangkan pemeriksaan BT dilakukan dengan menginsisi ekor tikus. Hasil penelitian menunjukkan rerata PT dan BT memanjang pada semua semua kelompok uji. Semakin besar dosis ekstrak rimpang kunyit maka semakin memanjang nilai PT dan BT. Retraksi bekuan pada kelompok uji menunjukkan rerata persentase serum yang rendah dibandingkan kontrol negatif, dan semakin besar dosis ekstrak yang diberikan maka semakin rendah nilai retraksi bekuannya. Hal tersebut diduga karena zat-zat aktif seperti curcumin dan ar-tumeron dapat menghambat proses pembekuan darah sehingga memengaruhi hasil pemeriksaan hemostasis darah.
SPECIFICS OF FINANCING PUBLIC PROCUREMENT IN THE REPUBLIC OF MOLDOVA IN THE CONTEXT OF OPTIMIZING PUBLIC FINANCE MANAGEMENT
Authors: MULIC Andrei , ULIAN Galina
Published: July 2021

Public procurement is investigated in terms of results and maximum efficiency of allocation of financial resources of the national public budget. In the context of economic development, optimization of the management of public financial resources is based on improving the legislation on public procurement and the financing mechanism. Based on this, public procurement is a complex, multi-level, interdependent system, the functioning at the all public levels. The aim of the research is to conduct a comprehensive study of the main problems and features of public procurement financing in order to optimize public finance management at the national level and to develop recommendations for improving the public procurement system in the Republic of Moldova. The methodology is based on the structural research method. The article is based on a study of the public procurement system in the Republic of Moldova, analyzing its constituent elements. The analytical method was used to study the concept of public procurement. The study established the relationship between the ethical behavior of officials, the effectiveness of control and the implementation of information systems to optimize the system of financing public procurement in the Republic of Moldova. Proposals are presented to improve the efficiency of the public financing mechanism in the context of electronic public procurement procedures within the automated information system “State Register of Public Procurements” MTender.
ASSESSMENT OF UNCERTAINTY WHILE SELECTING THE OPERATIONAL STRATEGY BY THE INDUSTRIAL ENTERPRISES IN ROMANIA
Authors: Vasilica RUSU
Published: July 2021

In conditions of uncertainty, an enterprise should have a rational basis for making decisions, which would enable the comparison of different alternatives and the choice of the most suitable action for achieving its objectives. Some researchers consider that uncertainty is generated either by insufficient knowledge about the nature of phenomena and processes or by the lack of information about these phenomena and processes. The author considers that these interpretations need to be completed by clarifying the motives which cause uncertainty. The following types of environment can be distinguished which could be considered as sources of uncertainty: socio-economic; scientific and technical; political and juridical; the sales partners’ environment; the environment of the seller; the competitors’ environment; the consumers’ environment; the investments environment. The aim of the present paper is to determine the degree of influence (markedness) of each type of uncertainty upon the decisions made while selecting the operational strategy by the industrial enterprise. The research has been carried out at 29 enterprises from different industrial fields from Romania: metallurgical industry, production of basic pharmaceuticals and pharmaceutical preparations, construction materials industry, food-processing industry, manufacture of chemical substances and products. The management teams of those companies have taken part in the survey. The research is based on the data processing and analysis obtained from 256 questionnaires. The survey carried out within the industrial enterprises has shown that the uncertainty from the consumption environment has the biggest impact upon the operational decisions of the companies. The uncertainty from the internal, political, juridical, scientific and technical environment is being analyzed to a lesser extent. The lowest domain of uncertainty is characteristic for the chemical industry and the highest for the industry of manufacture of basic pharmaceuticals and pharmaceutical preparations.
The Analysis of Photo Images of Varosha (Cyprus)
Authors: Muhtaroğulları Dr. Ayşe
Published: July 2021

Space is the “envelop of time” (Lefebvre, 1991, pp.339-40) and “(Social) space is a (social) product” (Lefebvre, 1991, p.26) same as Varosha, which is an abounded city since 1974, at Famagusta, known to the Greeks as Ammohostos, meaning “buried in the sand” (2020). Varosha has political, economic, and geographical importance for the Island and Europe. Thus, after the war of 1974, it is fenced off with barbed wires and is guarded by Turkish soldiers. In other words, it is impossible to cross the UN Buffer Zone (“Green Line”) and see the inside of Varosha. Signs/photos warn people to cross the fences and take photos and movies. Thus, this analysis aims to analyze the photos to reveal the hidden meanings of Varosha, because of this the writer uses Barthes's theory to find the connotation, denotation, and Saussure's theory to find the signifier and signified meanings. Then, the analysis will be supported by Color theory and Althusser's Apparatuses. Shortly, the paper tries to answer the question of what do the signs in Varosha’s photos mean according to Semiotics, Ideology and Color Theories? Consequently, in the end, the study shows that the real inhabitants/Cypriots miss the old days of Varosha.
Better Prediction of Mutation Score
Authors: Gil Yossi , Ma’ayan Dor
Published: July 2021

Mutation score is widely accepted to be a reliable measurement for the effectiveness of software tests. Recent studies, however, show that mutation analysis is extremely costly and hard to use in practice. We present a novel direct prediction model of mutation score using neural networks. Relying solely on static code features that do not require generation of mutants or execution of the tests, we predict mutation score with an accuracy better than a quintile. When we include statement coverage as a feature, our accuracy rises to about a decile. Using a similar approach, we also improve the state-of-the-art results for binary test effectiveness prediction and introduce an intuitive, easy-to-calculate set of features superior to previously studied sets. We also publish the largest dataset of test-class level mutation score and static code features data to date, for future research. Finally, we discuss how our approach could be integrated into real-world systems, IDEs, CI tools, and testing frameworks.
Incentive-Driven Federated Learning and Associated Security Challenges: A Systematic Review
Authors: Ali Asad , Ilahi Inaam , Qayyum Adnan , Mohammed Ihab , Al-Fuqaha Ala , Qadir Junaid
Published: July 2021

In response to various privacy risks, researchers and practitioners have been exploring different paradigms that can leverage the
increased computational capabilities of consumer devices to train machine (ML) learning models in a distributed fashion without
requiring the uploading of the training data from individual devices to central facilities. For this purpose, federated learning (FL)
was proposed as a technique that can learn a global machine model at a central master node by the aggregation of models trained
locally using private data. However, organizations may be reluctant to train models locally and to share these local ML models
due to required computational resources for model training at their end and due to privacy risks that may result from adversaries
inverting these models to infer information about the private training data. Incentive mechanisms have been proposed to motivate
end users to participate in collaborative training of ML models (using their local data) in return for certain rewards. However, the
design of an optimal incentive mechanism for FL is challenging due to its distributed nature and the fact that the central server
has no access to clients’ hyperparameters information and the amount/quality data used for training, which makes the task of
determining the reward based on the contribution of individual clients in FL environment difficult. Even though several incentive
mechanisms have been proposed for FL, a thorough up-to-date systematic review is missing and this paper fills this gap. According
to the best of our knowledge, this paper is the first systematic review that comprehensively enlists the design principles required for
implementing these incentive mechanisms and then categorizes various incentive mechanisms according to their design principles.
In addition, we also provide a comprehensive overview of security challenges associated with incentive-driven FL. Finally, we
highlight the limitations and pitfalls of these incentive schemes and elaborate upon open-research issues that required further
research attention.
ENSEMBLE-BASED INSTANCE RELEVANCE ESTIMATION IN MULTIPLE-INSTANCE LEARNING
Authors: Waqas Muhammad , Qureshi Rizwan
Published: July 2021

The Contribution to the 9th European Workshop on Visual Information Processing. The work is focuses on instance relevance estimation process in domain of multiple instance learning.
Joint Channel Tracking and Data Detection for Massive MIMO Uplink Over Time-Varying Channel
Authors: Akiba Yuya , Sugiura Shinya
Published: July 2021

In this letter, we propose a novel joint channel estimation and data detection scheme for massive multiple-input multiple-output (MIMO) uplink, which operates in a time-varying fading channel. More specifically, at the receiver of the proposed scheme, a data frame is divided into multiple blocks, and in each block, a demodulated data block is used for updating channel state information (CSI) in an iterative manner. Furthermore, the initial CSI in the block of interest is given by the estimated CSI in the previous block, hence allowing accurate tracking of CSI in a time-varying channel without imposing additional pilot insertion inside the data frame. Since the length of the divided blocks affects both the achievable channel tracking and data detection performances, it is optimized so as to maximize the discrete-input continuous-output memoryless channel's (DCMC) capacity derived in this letter. It is demonstrated that the DCMC capacity of the proposed scheme is capable of nearly achieving those of the perfect CSI counterpart without imposing any substantial pilot overhead.
Investigation of the Challenges and Issues of Hydrogen and Hydrogen Fuel Cell Applications in Aviation
Authors: Zhang Fan , Maddy Jon
Published: July 2021

Aviation is an vital global industry that generates economic growth, creates jobs and facilitates national and international trade and tourism. During the Covid-19 pandemic, the world had seen a sharp decline in commercial air travel due to the worldwide travel restrictions, lock-down orders and widespread fear of infection. However, there is a rapid increase in the use of UAVs for surveillance, communication, delivery and transport. And the aviation industry is believed to be able to provide valid contribution to the post-pandemic economic recovery. In order to reduce the carbon emission from aviation industry, there is a requirement for more electric aircraft. Hydrogen and fuel cell system's capability of creating a clean road transportation have been widely tested. In this paper, the status of hydrogen and fuel cell utilised in aviation is reviewed, and the challenges and issues are identified for a better integration of the hydrogen and fuel cell system in aviation.
A High-Level Approach for Energy Efficiency Improvement of FPGAs by Voltage Trimming
Authors: Safarpour Mehdi
Published: July 2021

This paper proposes a solution that makes voltage scaling possible by simply using HLS tools provided by vendor to improve energy efficiency of FPGAs by 2x
Lightweight Low-Noise Linear Isolator Integrating Phase-Engineered Temporal Loops
Authors: Taravati Sajjad , Eleftheriades George V.
Published: July 2021

Lightweight Low-Noise Linear Isolator Integrating Phase-Engineered Temporal Loops
‘Inductance’ definitions, modeling, and simulation
Authors: Ben-Yaakov Sam , Semidotskih Yivgeni , Rozanov Evgeny , Haag Hemann , Hämmerle Florian
Published: July 2021

The nonlinear behavior of the B-H relationship of a
ferromagnetic material gives rise to two different types of
permeabilities: ‘total permeability’ and ‘derivative permeability’.
These are used in this study to define three inductances of a
current dependent inductor that is built around a ferromagnetic
core: ‘total inductance’, ‘derivative inductance’ and ‘energy
related inductance’. The latter is the correct parameter to be used
when calculating the energy stored in a current dependent
inductor. Based on these inductance definitions, state equations
for the various ‘inductances’ were developed and used to
implement SPICE compatible models by applying behavioral
dependent sources. The theoretical derivations of this work were
validated by simulation and experimentally
Backscatter Wireless Communications and Sensing in Green Internet of Things
Authors: Toro Usman Saleh , Wu Kaishun , Leung Victor C.M.
Published: July 2021

The paper surveys state-of-the-art technologies deployed for low-powered joint sensing and communication applications.
Una lettura dell’approccio quainiano alla cartografia attraverso la lente degli ingegneri geografi napoleonici
Authors: De Santi Valentina
Published: July 2021

Massimo Quaini wrote about ninety titles strictly connected to cartography in his long academic career and his large scientific production. Considering this quantity of works, the articles published by Quaini about geographic engineers’ activity represent a seamless thread. In this contribution I examine such articles focusing on the heuristic motivations that have pushed him to put these actors at the centre of his historical-cartographic reflection.
Predoni a casa nostra e il geografo solidale: Massimo Quaini tra terra e acqua
Authors: Vallerani Francesco
Published: July 2021

In accordance with the main goals of this collection of essays in honour of Massimo Quaini, the text focuses on a peculiar character of the Ligurian geographer’s sensibility, his attention to landscape protectionresearch activity developed in the context of the humanistic geography. Starting from a personal narrative based on his own reminiscences and neglected memories, the author tries to shed light on the relationships between civil commitment and cultural reflection which characterize environmental sensitivity, bringing together his interests with Quaini’s emotional geographies. Finally, some of Quaini’s everyday practicalities are highlighted as the easiest doorway to improve the cognitive procedures of cultural geography.
Paesaggio e musei: sulle tracce di Massimo Quaini
Authors: Pressenda Paola , Sturani Maria Luisa
Published: July 2021

International policies have recently acknowledged the responsibilities of museums towards the landscape. We trace a critical summary of the debate developed in museology and geography about the relationships between museums and the territories and landscapes surrounding them. As stated by Massimo Quaini, the complex challenge posed by these relationships lies in the balancing between conservation of landscapes and local development: a challenge that in the Italian context could be successfully taken on by eco-museums.
Lo sguardo del geografo: Massimo Quaini, l’archeologia, la storia
Authors: Stagno Anna Maria , Tigrino Vittorio
Published: July 2021

In this paper we discuss how Massimo Quaini, since the end of the 1960’s, dialogued (or did not) with the sister disciplines of historical geopgraphy: archaeology and social history. We reflect on the experimental path of Quaini “towards a new geographicity” and on the numerous meetings, separations, parallel and divergent routes which had place along it; focusing on Massimo’s experiences and acquaintances in Genoa, those of the Ligurian Study Centre on Deserted Villages and of the debates around population geography and history of material culture, and later those related to the Permanent Seminar on Local History and the long discussion around micro-history and its different outcomes.
Raccontare, raccontarsi. Massimo Quaini fra biografia ed ‘egogeografia’
Authors: Rossi Luisa
Published: July 2021

Intertwining biographical method and autobiography. Massimo Quaini had shown much interest in the ‘egogeography’ genre, practiced by different French geographers. The work traces back, on the basis of published and unpublished writings, some significant aspect of the intellectual personality of the Italian geographer. In particular, passages are presented in which he recalls his scientific and professional training and some letters that account for the highly critical positioning towards academic power, against the management of competitions based on personal relationships rather than on scientific merits (to the detriment of the discipline itself). Some original documents testify the interest in history and philosophy and the acceptance of historical materialism that has shaped his youth work and, more generally, founded his interpretation of geographical reality.