bluuebunny/crossref_metadata_2025 huggingface dataset:
Possibilities of measuring the local density of seawater in probe instruments
Authors:   Institute of Natural and Technical Systems, Gaisky V.A. , Gaisky P.V. ,   Institute of Natural and Technical Systems
Published: April 2021

In modern expeditionary research carried out on research vessels, the local density of seawater is not measured, but calculated using the TEOS-10 thermodynamic equation of state based on cumulative measurements of pressure, temperature and electrical conductivity or speed of sound. The equation of state with satisfactory accuracy is valid only for oceanological waters, and is used with corrections for the waters of the marginal and inland seas. These corrections are permanently refined and will be refined in the future. It is desirable to have direct measurements of the local density of any waters directly in the environment with sufficient accuracy, which is now 4·10-6. Laboratory measurements made by various methods and with different devices, not always automated, give accuracy ~ . Attempts to automate these measurements and introduce them into sounding devices have been made several times. Experimental samples of vibration, refractometric and hydrostatic devices have been created and tested, none of which have been introduced into the practice of expeditionary work for various reasons. However, scientific and technological progress makes possible technical solutions previously difficult to implement. This also applies to modifications of the hydrostatic method for measuring the local density, which have recently attracted the interest of developers. The paper analyzes the possibilities of implementing the hydrostatic method using multi-element resistor distributed pressure and temperature sensors, resistance profilers of these sensors and determining the spatial pressure drop on a given base by measuring and subtracting sensor resistances, taking into account temperature correction. The use of three such sensors, mounted on three rods, oriented downward along the axes of a rectangular coordinate system, provides the possibility of measuring the local density with an arbitrary orientation of the probe relative to the vertical. The analysis shows the possibility of measuring the local density of seawater by the hydrostatic method with the required accuracy in probe instruments.
Monitoring system of changes in air composition
Authors:   Sevastopol State University, Shirokov I.B. , Evdokimov P.A. ,   Institute of Natural and Technical Systems,   Sevastopol State University, Shirokova E.I. ,   Sevastopol State University
Published: April 2021

The article considers a new approach to air monitoring based on phase-measurement in the SHF range and homodyne frequency conversion. Information about the change in the air composition is obtained by determining the phase progression of the microwave signal when it passes through the environment under study. At the same time, to determine the change in the content of exclusively harmful gases in the air composition, the meteorological component of the environment is subtracted from the information signal. The implementation of the method involves the organization of a monitoring system consisting of several microwave measuring lines synchronized with a monitoring center through a VHF communication channel, which will allow for global and continuous monitoring of changes in the composition of the air environment. The block diagram of the developed system is presented and its individual blocks, the theoretical possibilities of its operation are considered. An experimental study of the influence of meteorological characteristics of the environment on the phase progression of the microwave signal was also carried out.
Modern assessment methods of comfort of bioclimatic conditions for resort areas
Authors:   Institute of Natural and Technical Systems, Stefanovich A.A. , Voskresenskaya E.N. ,   Institute of Natural and Technical Systems
Published: April 2021

The modern approaches to assessing the comfort of bioclimatic conditions for rational recreational activities are analyzed. A review of modern domestic and foreign methods is carried out and their advantages and disadvantages in assessing the thermal comfort of a human are identified. Most of the bioclimatic indicators used are now considered outdated, since they do not take into account human physiological reactions. Many foreign authors are increasingly using in their practice more complex thermal bioclimatic indices based on the human energy balance. In Russia, such studies are still rare. From the indices based on the human heat balance, the paper considers the following: Physiological equivalent temperature (PET), Perceived temperature (PMV), Universal thermal climate index (UTCI). The main algorithms for calculating bioclimatic indices are proposed. The calculations use the complete human thermal balance equation and all parameters that affect human comfort. Calculation of bioclimatic indices of this type is considered to be a more effective method for assessing the comfort of bioclimatic conditions for territories intended for the organization of health-improving recreation and tourism. The noted indices have a greater variability of values ​​and, therefore, a higher informational significance in comparison with other bioclimatic indicators that are simpler in calculations, such as, for example, equivalent effective temperature (EET) and biologically active temperature (BAT). Thus, the conducted review of existing methods for assessing bioclimatic indicators identified their advantages and disadvantages, which is important for the subsequent selection of the most optimal method suitable for a particular recreational area with appropriate weather and climatic conditions.
Construction model for microalgae photometric cell
Authors:   The A.O. Kovalevsky Institute of Biology of Southern Seas of RAS, Gulin A.S. , Trenkenshu R.P. ,   The A.O. Kovalevsky Institute of Biology of Southern Seas of RAS
Published: April 2021

The work assesses the efficiency of red light-emitting diodes widely used in phyto-irradiators. The article focuses on the emitting monochrome LED with an extended radiation range in a photometric cell used for determining the concentration of pigments in microalgae cultures, Spectrophotometric methods are known as the most accurate and relevant methods for assessing the concentration of pigments, having significant advantages for monitoring and controlling the process over chemical ones in terms of selectivity, speed, accuracy, sensitivity, substance consumption, as well as the possibility of continuous analysis in a flow. The study of the emission spectra of red LEDs, their comparison with the absorption spectra of microalgae cultures, as well as the selection of the most accessible emitting element for the photometric cell is carried out. The analysis of the absorption spectra of the culture and extracts of Dunaliella salina using the method of dividing the long-wavelength region of the spectrum (from 600 to 700 nm) into separate Gaussian curves is presented. Based on the results obtained, the choice of an LED is made, which has an extended radiation range and allows providing a high sensitivity of the device, with low price making it easy to manufacture a photometric cell. Comparison between the emission spectrum of the LED and the absorption spectrum of the microalgae culture allows us to conclude that the emission spectrum of the LED emitter is in good agreement with the maximum absorption spectrum of the chlorophyll b pigment in the 620–700 nm region, which means that such an emitter is capable of providing a higher energy efficiency. The spectrum of the transmitted light entering the photodetector is also built. It is concluded that the proposed LED, when used in a photometric cell, can effectively work with pigments in the red region of the spectrum. The obtained device spectra allow determining such culture characteristics as biomass and the ratio of chlorophyll a and chlorophyll b. The transmitted light spectrum allows determining not only the average value of the energy received by the photocell but also the amount of pigments.
Control of the current system and fields of the total suspended matter concentration and dissolved organic matter concentration in lake Donuzlav in May 2019
Authors:   Marine Hydrophysical Institute of RAS, Lomakin P.D. ,   Institute of Natural and Technical Systems, Ryabushko V.I. ,   A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Chepyzhenko A.I. ,   Marine Hydrophysical Institute of RAS, Schurov S.V. ,   A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS
Published: April 2021

Based on the results of the expedition carried out in May 2019 by the A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS, data on the local system of currents and the structure of the content of the total suspended matter and dissolved organic matter fields in the waters of Donuzlav Lake are obtained. It is shown that the local system of currents in the upper layer of the lake waters is represented by two cyclonic eddy formations. At the bottom along the navigable canal, a pronounced current stream directed into the sea is noted. In the structure of the total suspended matter and dissolved organic matter fields, three anthropogenic maximums of concentration coinciding in location are found, which are located at the site of sand mining, in the area of the port and in the Shchelkunov Bay, where there is a household waste collector. In the structure of the field concentration of total suspended matter and dissolved organic matter, three sites of anthropogenic concentration maxima coinciding at the location are found. They are located on the sand mining site, in the port area and in the Shchelkunov Bay, where the household waste collector operates. Sand mining, port and household waste collector are the main sources of water pollution in Lake Donuzlav. In the area of the mussel-oyster farm, an increased concentration of dissolved organic matter is identified, as a likely consequence of the vital activity of mollusks concentrated here.
Allelopathic tension of biotopes in forest ecosystems of wet subtropics
Authors:   Branch of Institute of Natural and Technical Systems in Sochi, Scherbina V.G.
Published: April 2021

In the absence of a pronounced anthropogenic impact, allelopathic tension in forest ecosystems of the main formations of the Sochi Black Sea region and its influence on the saturation of phytocenoses with an adventive plant group are analyzed. The studies were carried out in 38 forest ecosystems of 7 formations at 13 stationary sites in the foothill zone. The absence of anthropogenic load was determined by the average bulk soil mass and the class of atmospheric air pollution. The аllelopathy environment of individual trees was assessed according to the activity of the forest floor of 21 tree species recorded in the analyzed forest communities. The tension of biotopes in ecosystems was assessed with the joint growth of 1 to 5 tree species in the main canopy. The activity of water-soluble colins was determined by biotesting of water extracts from forest litter according to A.M. Grodzinsky. The activity of the solutions was assessed by the index of allelopathic activity. It is shown that the magnitude of the contribution of the influence of phytocenosis to the allelopathic background of the biotope depends on the species-specific features of the stand and the manifestation of a synergistic or antagonistic effect of аllelopathy related to the level of species completeness of communities. An increase in species completeness to 0,4-0,6 is accompanied by an increase in the synergistic effect, a decrease in the intensity of the аllelopathic background and saturation with adventive species, with their proportion increasing by 11,9-21,5%. An increase in the species completeness by more than 0, 6 is statistically reliably accompanied by a decrease in the synergistic effect and a transition to antagonism, with an increase in allelopathic tension in the community, increasing the proportion of native species, reducing the number of free niches for adventive species and the level of vulnerability of communities to their introduction and distribution.
CONTINUIDADE DE CUIDADOS DE REABILITAÇÃO ENTRE CONTEXTOS DE SAÚDE: ESTUDO DE CASO
Authors: Silva Rui Pedro , Sousa Elisabeth
Published: April 2021

Objetivo: Descrever, sob a perspetiva da continuidade de cuidados, um caso clínico onde se verificou acompanhamento por enfermagem de reabilitação durante um ano, envolvendo diferentes contextos de prestação de cuidados de saúde.

Materiais e método: O caso reporta a um utente com multimorbilidade, o qual foi alvo de cuidados de saúde em quatro contextos de distintos ao longo do último ano: ECCI, internamento hospitalar de agudos, internamento hospitalar de manutenção/reabilitação e ambulatório. Em cada um dos contextos descritos, o utente foi alvo de uma avaliação por parte de enfermagem de reabilitação, da qual resultou a implementação de um plano de reabilitação sempre que a condição clínica o permitiu. Em cada um dos contextos isolados verificou-se evolução positiva funcional e/ou clínica, da qual se traduz evolução significativa ao comparar os extremos cronológicos do período temporal em causa. Entre cada contexto distinto verificou-se comunicação formal e informal de dados clínicos, entre os quais o plano de reabilitação em curso no momento da transição entre contextos.

Resultados e discussão: Da análise dos dados expostos, é possível fazer as seguintes inferências: a) houve evolução positiva da condição funcional do utente entre o início e o final do período em análise (recuperação total da força muscular, do equilíbrio e da autonomia dos autocuidados); b) em cada contexto individual, e sempre que a condição clínica do utente permitiu, foi implementado um plano de reabilitação específico, do qual resultaram ganhos funcionais e clínicos; c) embora tenha havido comunicação formal e informal entre contextos acerca do plano de reabilitação, não se seguiu um plano de reabilitação único e dinâmico; d) possivelmente, um plano de reabilitação único e dinâmico permitiria atingir mais rapidamente os resultados obtidos, pela maior fluidez dos cuidados entre contextos.

Conclusão: É possível ter estratégias de reabilitação a longo prazo em casos clínicos complexos, mesmo que entrem em equação vários contextos de prestação de cuidados de saúde. Embora a comunicação entre os diferentes contextos permita sequenciar os respetivos planos de reabilitação, existe espaço para que se melhore a continuidade de cuidados entre diferentes serviços e se ambicione a adoção de um plano de reabilitação único, transversal e dinâmico; um possível caminho para essa melhoria será a formalização da comunicação direta entre os seus profissionais, como complemento da utilização dos sistemas de informação em uso.
PISA RESULTS OR X-RAY FILMS OF EDUCATION SYSTEMS?
Authors: Pekel Feyzi Osman
Published: April 2021

To be able to develop well-equipped students in accordance with the expectations of the society is one of the objectives of every education system in every country. In this sense, monitoring student performance comparatively at international level, assessing students and schools characteristics is crucially important in order to structuring individuals’ future lives. Determining student performances in different subject areas is a way for the countries examining the performance of their education systems (Anagün, 2011). Results of these assessments and evaluations enable steering the educational policy by diagnosing/revising the failures of the system.
SAUDI TEACHERS’ PRACTICES OF FORMATIVE ASSESSMENT: A QUALITATIVE STUDY
Authors: Almuntasheri Saeed
Published: April 2021

Shifting from teacher-centred to student-centred practices requires teachers to understand strategies to interact with students in science classes. Formative assessment strategies are very critical component of classroom interaction where teachers obtain information about student learning wherever possible. Traditionally, however, teachers ask questions and evaluate student responses but without investigating student contributions to the classroom interaction. This qualitative study aimed at developing teachers’ knowledge of formative assessment strategies when teaching science-based inquiry in Saudi Arabia. 12 teachers were observed when teaching science and details of one teachers’ practices of formative assessment is presented in this study. Formative assessment framework that describes assessment conversations is used and modified to observe teachers’ assessment practices. Assessment conversation consists of four-step cycles, where the teacher elicits information from students through questioning, the student responds, the teacher recognizes the student’s response, and then uses the information to develop further inquiry. Findings indicate that teachers ask questions and receive responses but rarely allow students to share their own ideas or discuss their own thinking. The study underlines the importance of integrating formative assessment strategies during scientific inquiry teaching for professional development as a way to increase student participation and allow opportunities for students’ inquiry in science classes.
Key words: assessment conversations, formative assessment, science inquiry.
DESIGN OF DIDACTIC MATERIAL FOR TEACHING AND LEARNING SITUATIONS: THE CASE OF SÃO TOMÉ AND PRÍNCIPE, AFRICA
Authors: Couto Rita Maria de Souza , Portas Roberta G. R. , Ribeiro Flavia Nizia F. , Mamede-Neves Maria A. C.
Published: April 2021

Much of the didactic material of São Tomé and Príncipe for teaching and learning situations for early childhood education is not guided by interdisciplinary dialogue between design and education suitable to the country’s context. A proposal is presented for a system of objects that support the early childhood education curriculum, designed to be used as a guide and supporting material for preschool teachers of São Tomé and Principe and illustrates the various ways in which design can contribute to teaching-learning processes, strengthening knowledge building through the development of artefacts, environments, and education systems. This material is one of the outcomes of the project developed by the Interdisciplinary Education Design Lab¬ (LIDE), from PUC-Rio, Brazil, using the Design in Partnership methodology for the development of curriculum content for early childhood education. The project is being developed by researchers at LIDE/PUC-Rio, the Ministry of Education, Culture and Science of the Republic of São Tomé and Príncipe, Africa, and UNICEF, and has other spheres of action, including the development of early childhood education curriculum content, ongoing teacher and assistant training courses, the recycling course offering for educators and assistants, the teaching materials project, and the redesign of physical spaces in kindergartens. This material contributes to the application of the curriculum under development.
Key words: education design, design in partnership, early childhood education, teaching materials.
EXAMINING FACTORS AFFECTING IMPLEMENTATION OF INQUIRY-BASED LEARNING IN FINLAND AND SOUTH KOREA
Authors: Kang Jingoo , Keinonen Tuula
Published: April 2021

Using inquiry has become a universal factor in science education, but teachers often face challenges in implementing inquiry-based learning (IBL) because of, for instance, teachers’ low confidence in conducting inquiry or insufficient school resources. Much research has been conducted to identify the barriers that impede inquiry practice. However, most studies have employed small-scale qualitative methods from a single-country sample, and, thus, the effects of each factor on conducting inquiry in different educational systems have yet to be measured in one statistical model. Accordingly, this research was aimed to explore the extent to which various teacher- and school-factors have respectively affected teachers’ implementation of inquiry-based learning at lower secondary schools. To examine this issue, samples of 496 Finnish teachers in 135 lower secondary schools and 184 Korean teachers in 147 lower secondary schools were selected from the TIMSS 2011 science data set. The findings reveal that teachers’ confidence in teaching science and their collaboration to improve science teaching were strongly associated with facilitating inquiry in both countries, and these two factors’ positive effects on the implementation were partially derived from inquiry-related professional development in the Finnish sample. In addition, class size and school resources were also significantly related to inquiry practice in Finland, and the teachers’ education levels were negatively correlated with the frequency of inquiry practice in Korea. However, in both countries, the teachers’ emphasis on exams was indicated as a non-significant factor in predicting inquiry frequency. The results have implications in respect of the roles of professional development and school environment in increasing IBL practice in school science.
Key words: inquiry-based learning, teacher collaboration, teacher confidence.
IMPACT EVALUATION OF TWO MASTER COURSES ATTENDED BY TEACHERS: AN EXPLORATORY RESEARCH IN ANGOLA
Authors: Lopes Betina Silva , Costa Nilza , Matias Bernardo Filipe
Published: April 2021

The present research aims to evaluate the impact of two master courses offered by one public higher education institution in Angola on the professional development of Angolan teachers and also on the broader educational community. The two courses were attended by 393 teachers. The data of 45 answered questionnaires and six verbatim transcripts of individual semi-structured interviews were analysed. According to the teachers perspective the courses contributed to teachers’ personal growth and changes of practices, as well as improved students’ learning (micro context of impact). Although to a lesser extent, impact on broader contexts was also identified, indicating that changes occurred also within other teachers and elements of the surrounding school community (meso context of impact) as well as the community of educational research (macro context of impact). The results in discussion are of relevance for further investment on post graduation courses (master level) for teachers offered by higher education institutions. Outlined recommendations could potentially contribute to impact enhancement (and understanding) of academic post-graduation courses’ attended by in-service teachers, particularly those integrated in recent higher education systems of post conflict countries, such as the Republic of Angola. Key words: teachers’ professional development, teacher education, post-graduation, master courses, impact evaluation, Angola.
MAKING DECISIONS ABOUT BIODIVERSITY CONSERVATION: A STUDY IN PRE-SERVICE TEACHER EDUCATION
Authors: Miani Camila S. , Caldeira Ana M. A. , Brando Fernanda R.
Published: April 2021

Biodiversity conservation is a current environmental concern that reveals the competing priorities of economic development and environmental preservation. These issues are currently being debated at various levels of society, and decisions are made based not only on scientific knowledge but also on opinions and values. Among the reasons commonly used to justify current environmental demands for biodiversity conservation, Sarkar (2005) has identified three “flawed arguments” to be avoided. Because the discussion of biodiversity conservation is a current demand, it should also be addressed in the field of education. Biology teachers should be prepared to engage their students in discussion about all aspects of biodiversity conservation. In light of the need to train professionals who are capable of addressing complex issues such as this, the following may be asked: What do biology students consider when making decisions about the use and conservation of biodiversity? Do the flawed arguments identified by Sarkar (2005) factor into their reasoning? This research analyzes reports produced following a teaching activity known as “decision making.” The results reveal not only students’ concern for environmental issues, particularly regarding water resources, but also the presence of two of Sarkar’s flawed arguments. The limits of students’ knowledge of the subject also become evident.
Key words: biodiversity conservation, pre-service training, decision making.
On $\mathcal{I}_{\theta }$-convergence in Neutrosophic Normed Spaces
Authors: KİŞİ Ömer
Published: April 2021

The purpose of this article is to investigate lacunary ideal convergence of sequences in neutrosophic normed space (NNS). Also, an original notion, named lacunary convergence of sequence in NNS, is defined. Also, lacunary $% \mathcal{I}$-limit points and lacunary $\mathcal{I}$-cluster points of sequences in NNS have been examined. Furthermore, lacunary Cauchy and lacunary $\mathcal{I}$-Cauchy sequences in NNS are introduced and some properties of these notions are studied.
Simposio sobre Abdomen Agudo - Segunda Parte
Authors: Barboza-Beraún Aurelio
Published: April 2021

La enfermedad diverticular es un término general que se refiere a la presencia de divertículos, pequeñas bolsas en la pared del colon. Los divertículos son protrusiones saculares de la mucosa y submucosa a través de la capa muscular del colon(1). La fisiopatología directa y la progresión de la diverticulosis a diverticulitis no es del todo conocida, pero cabe mencionar que múltiples estudios han descartado que la ingesta de nueces, semillas y maíz sean causal de una diverticulitis aguda (DA).
El virus de las “noticias falsas” en la pandemia del COVID-19
Authors: Naldo Balarezo-López Gunther
Published: April 2021

El COVID-19 no solo es un virus contagioso, también es un virus de noticias falsas que incrementa la angustia, ansiedad y el estrés. Para ello, se hizo una revisión de la literatura, resumiendo los puntos más relevantes con el objetivo de describir aspectos relacionados a la desinformación, la infodemia y las teorías de la conspiración que han estado circulando a través de los medios de comunicación y las redes sociales durante el año 2020. Se encontró que las noticias falsas se propagan con mayor rapidez que el virus en sí, principalmente por intereses personales, colectivos, económicos y políticos. En tal sentido, se recomienda que la mejor forma de combatir las noticias falsas, es no difundir mensajes sin antes haber verificado la información en fuentes oficiales y autorizadas.
Pacientes con antecedentes de ACV aumentarían 3 veces el riesgo de fallecer por COVID-19 y retraso en la búsqueda de ayuda
Authors: Ingelheim Boehringer
Published: April 2021

Desde marzo de 2020 la OMS declaró la pandemia por el virus SARS-CoV-2, produciendo gran impacto en la salud de la población mundial con miles de infectados y muertes. En Perú, los casos por este virus han superado los 200,000 pacientes contagiados y más de 8,000 fallecimientos. Este panorama demuestra que el virus continua en alza y la propaga- ción no se detiene.
Drogas que reducen el nivel de glucosa también reducen el riesgo cardiovascular
Authors: Calderón-Velasco Rolando
Published: April 2021

La diabetes afecta a más de 450 millones de personas en el mundo y tiene una prevalencia global del 9.3%. La diabetes tipo 2 constituye entre el 90 a 95% de los casos.
Cirugía Centrada en la Persona
Authors: Haro-Haro Daniel Enrique , Chafloque-Cervantes Augusto B.
Published: April 2021

Este trabajo tiene como objetivo hacer una revisión de la cirugía centrada en la persona, los antecedenteshistóricos, los principios básicos del ejercicio de la profesión y el perfil del cirujano humanista y humanitario, priorizando el vínculo con el paciente y las metas que se debe alcanzar en los planes curriculares de su formación, y enfatizando en la importancia del consentimiento informado en cirugía. Los autores hacen una propuesta para mejorar su eficacia, haciendo énfasis en que, en todos momento, el cirujano debe aceptar con honestidad y ética requisitos indispensables para una buena práctica profesional, brindando su capacidad en beneficio del paciente.
Simposio sobre Abdomen Agudo - Segunda Parte
Authors: Revoredo-Rego Fernando , De Vinatea-de Cárdenas José
Published: April 2021

La pancreatitis es un proceso inflamatorio agudo del páncreas con compromiso variable de otros tejidos regionales u órganos y sistemas remotos(1). Se caracteriza por la activación celular intra acinar de las enzimas digestivas y la subsecuente liberación de citoquinas proinflamatorias.
Simposio sobre Abdomen Agudo - Segunda Parte
Authors: Ortega-Checa David A. , Vojvodic-Hernández Iván
Published: April 2021

El trauma es el daño mecánico en la anatomía humana causada por una fuerza externa. También se define como el daño tisular por una energía dañina: la energía cinética es la más frecuentemente comprometida, pero también puede ser calórica, química o radioactiva. De la misma manera, puede producirse por la ausencia de un elemento esencial para la vida como el oxígeno que causa hipoxia y el calor que causa hipotermia
Management of Mandibular Fractures: Report of Three Cases
Authors: Romero Hugo , Guifarro Juan , Díaz Francisco , Umanzor Vilma , Pineda Mayra , Cruz Christian , Gabrie Mario
Published: April 2021

The mandibular bone is an important component of the facial bone, which has a unique role in digestive system, speech, and facial esthetics. For these important functions of mandibular bone, it is vital that surgeons should not only treat function but also consider the esthetics together. Mandibular fractures are among the most common traumatic injuries of the maxillofacial, and it is in facial region, the second most frequently fractured adult facial bone is the mandible due to its vulnerable position and projected onto the face. The objective of this study is to show in detail all the specific aspects, the management and the efficacy of the use of treatments by means of closed reduction and open reduction+stable internal fixation in patients with mandibular fractures. Special emphasis was placed on the potential impact of socioeconomic standards on the mechanism and pattern of jaw fractures.
Behaviour Analysis of the Padé Sumudu Adomian Decomposition Method Solution
Authors: Metonou Richard , Weidong Zhao
Published: April 2021

Researchers in the past investigate the Sumudu Adomian Decomposition Method (SADM), the Laplace Adomian Decomposition Method (LADM), the Padé Sumudu Adomian Decomposition Methods (PSADM). In this paper we analyse the behaviour of the function P[L/M][.] called double Padé approximation using in the Padé Sumudu Adomian Decomposition Method (PSADM), and provide some criteriums for chosing L and M to obtain the best Padé approximation solution in the case of nonlinear Schrödinger equation and nonlinear KdV Burger's equation.
Sistem Pakar Berbasis Android untuk Diagnosis Diabetes Melitus dengan Metode Forward Chaining
Authors: NAWANGNUGRAENI DEVI ASTRI
Published: April 2021

Diabetes Melitus termasuk salah satu penyakit yang menyebabkan kematian terbesar. Hal tersebut disebabkan pengetahuan masyarakat yang kurang mengenai gejala-gejala penyakit yang ditimbulkan sehingga mengalami keterlambatan penanganan. Artikel ini menyajikan pengembangan aplikasi sistem pakar yang digunakan sebagai perangkat diagnosis Diabetes Melitus pada mobile Android. Tujuan aplikasi ini untuk mendeteksi Diabetes Melitus berdasakan gejala yang sedang dialami oleh seseorang sesuai dengan tipe penyakit Diabetes Melitus dan menentukan persentase kemungkinan terjadinya penyakit tersebut. Dalam pengembangkan aplikasi sistem pakar ini menggunakan metode forward chaining. Penerapan metode forward chaining digunakan untuk mengumpulkan informasi kemudian dilanjutkan dengan mengimplementasikan penalaran dengan aturan if-then sebagai hasil kesimpulan diagnosis sesuai dengan gejala. Tahapan dalam pengembangan aplikasi sistem pakar ini menggunakan Expert System Development Life Cycle (ESDLC). Hasil pengembangannya yaitu sistem pakar yang digunakan untuk diagnosis penyakit Diabetes Melitus sesuai gejala yang dialami. Aplikasi sistem pakar tersebut diimplementasikan pada mobile Android. Aplikasi sistem pakar ini menampilkan hasil yang spesifik yaitu selain menampilkan diagnosis Diabetes Melitus juga menampilkan persentase kemungkinan terjadinya penyakit tersebut pada seseorang.

Kata Kunci – Android; Diabetes Melitus; Diagnosis; Forward chaining; Sistem pakar.
Perancangan dan Implementasi Komunikasi RS-485 Menggunakan Protokol Modbus RTU dan Modbus TCP Pada Sistem Pick-By-Light
Authors: Tosin Tosin
Published: April 2021

Proses di industri membutuhkan produktivitas yang tinggi dalam setiap aktivitasnya. Salah satu contohnya adalah proses pengambilan barang di tempat penyimpanan. Sistem yang ada sekarang adalah operator mengambil barang dengan mencari secara manual ke tempat penyimpanan. Hal tersebut akan menimbulkan masalah yaitu proses pengambilan barang membutuhkan waktu yang lama atau terjadi kesalahan dalam pengambilan barang. Tujuan dari penelitian ini adalah merancang sistem pick-by-light dengan komunikasi serial RS-485 dan TCP/IP menggunakan protokol Modbus untuk mendukung aktivitas produksi yang efisien. Pick-by-light adalah sistem yang terdiri dari perangkat lampu sebagai tanda barang tersebut harus diambil, tombol sebagai konfirmasi bahwa barang sudah diambil, dan perangkat pemroses untuk memproses data. Hasil dari pengujian menunjukkan bahwa sistem pick-by-light dapat berjalan dengan baik dengan menerapkan komunikasi serial RS-485 dengan protokol Modbus RTU dan komunikasi TCP/IP dengan protokol Modbus TCP. Hasil ini didapat dari pengujian yang telah dilakukan dengan komunikasi yang berbeda, yaitu menggunakan komunikasi serial RS-485 dan TCP/IP. Dengan demikian, sistem ini dapat diterapkan pada industri manufaktur maupun pergudangan dalam meningkatkan produktivitas pengambilan barang.
Algoritme Genetika untuk Desain Level Dinamis pada Game Edukasi Kebakaran Hutan
Authors: Wijaya Danny , Haryanto Hanny , Astuti Erna Zuni , Wijanarto Wijanarto
Published: April 2021

Kebakaran hutan dianggap sebagai ancaman yang memiliki potensi besar dalam menghambat pembangunan yang berkelanjutan karena efeknya langsung bagi ekosistem. Kebakaran hutan semakin menarik perhatian dari pihak lokal maupun internasional karena memiliki dampak terhadap lingkungan dan ekonomi. Sosialisasi kebakaran hutan terhadap masyarakat dapat dilakukan melalui berbagai cara. Video Game adalah permainan interaktif dengan antarmuka pengguna melalui gambar yang dihasilkan oleh piranti video. Game dapat berfungsi untuk menumbuhkan pengetahuan, kreativitas, emosi, kecerdasan dan nilai-nilai sikap, oleh karena itu game dapat digunakan sebagai sarana edukasi kebakaran hutan. Dalam pembuatan game, desain level merupakan salah satu faktor utama yang menentukan kualitas gameplay dari suatu game. Penelitian ini menggunakan algoritma genetika sebagai metode Procedural Content Generation dalam desain level dari game edukasi kebakaran hutan. Metode algoritma genetika dapat menghasilkan bentuk level yang optimal dari hasil iterasi dengan memilih kandidat terbaik.
Aplication of Classification Proverty Society Status in Tegal District
Authors: Halimatussa'diyah Nur , Sasmito Ginanjar Wiro , Apriliani Dyah
Published: April 2021

Saat ini Dinas Sosial telah menerapkan pendataan penduduk yang terkomputisasi secara terpusat, yang menyebabkan dinas sosial tidak dapat mengolah data warganya secara optimal. Pengolahan data tersebut masih memiliki beberapa kekurangan yang perlu diatasi, yakni dalam menentukan nilai dari kriteria-kriteria untuk mengklasifikasikan tingkat kemiskinan penduduk dilakukan dipusat. Penelitian ini menjelaskan tentang klasifikasi penduduk miskin sebagai trobosan dalam menghasilkan informasi kepada Dinas Sosial maupun publik tentang tingkat kemiskinan di Kabupaten Tegal. Sistem ini merupakan aplikasi berbasis website yang dibuat untuk petugas Dinas Sosial dalam mengolah data penduduk miskin. Metode yang digunakan dalam aplikasi ini menggunakan metode pembobotan. Hasil dalam penelitian ini adalah aplikasi berbasis website yang dapat mengklasifikasikan warga, desa dan kecamatan miskin.
Rancang Bangun Aplikasi Tracking Paket Ekspedisi CV MK Express
Authors: Juwariyah Siti , Sufaidah Siti , Widya Moh Anshori Aris
Published: April 2021

Inovasi menjadi salah satu upaya bagi sebuah instansi atau perusahaan untuk terus meningkatkan kualitas pelayanan, hal ini dilakukan agar dapat bertahan di era hiperkompetisi saat ini. CV MK Express adalah perusahaan baru yang bergerak di bidang jasa, yaitu ekspedisi pengiriman barang maupun dokumen. Sebagai perusahaan pendatang, CV MK Express berinovasi dengan cara membuat sebuah aplikasi berbasis mobile. Aplikasi ini meliputi sistem pelacakan, penjemputan dan pengantaran paket yang memanfaatkan fitur GPS (Global Positioning System). Sistem pelacakan paket pada aplikasi ini berbeda dengan aplikasi sejenis karena menggunakan sistem lacak realtime, dimana pengguna dapat melihat titik keberadaan paket per interval waktu yang telah ditentukan sebelumnya. Penelitian ini bertujuan untuk merancang dan membangun aplikasi tersebut dengan basis mobile android. Android pada aplikasi ini berjenis hybrid dan dibangun menggunakan framework7, sedangkan basis data yang digunakan adalah MySQL. Di sisi pelanggan penelitian ini diharapkan dapat memberikan kemudahan dalam melakukan permintaan penjemputan dan pelacakan paket, sedangkan di sisi perusahaan diharapkan dapat memperlancar proses bisnis yang dijalankan.

Kata Kunci – android hybrid, ekspedisi, framework7, GPS (Global Positioning System), sistem tracking.
Implementasi dan Uji Kinerja Kontrol PID untuk kestabilan Pesawat Tanpa Awak Tailsitter pada Keadaan Mengambang
Authors: Nizar Taufiq Nuzwir , Jatmiko Didit Andri , Hartono Rodi , Pratama Agung Ibnu Ghani
Published: April 2021

Pesawat tailsitter adalah pesawat tanpa awak yang dapat lepaslandas secara vertikal. salah satu faktor keberhasilan terbang pesawat tanpa awak tailsiter adalah kestabilan pada saat lepaslandas hingga mengambang atau hovering sebelum transisi untuk terbang secara horizontal. Yang dimaksud dengan kestabilan  pada topik ini adalah pesawat tanpa awak tailsitter harus dapat mempertahankan posisi nya pada tiga sumbu sudut pergerakan yaitu sumbu pergerakan Roll, Pitch, dan Yaw, dimana  pesawat tanpa awak tailsitter dapat dikatakan stabil jika ketiga sumbu pergerakan Roll, Pitch dan Yaw bernilai 0 dalam satuan derajat. salah satu masalah yang dapat mengganggu kestabilan pada pesawat tanpa awak tailsitter adalah adanya ketidakseimbangan pada aktuator seperti putaran motor dan pergerakan servo stabilizer. Untuk mengatasi masalah tersebut diperlukan sebuah teknik pengendalian pada aktuator tersebut agar pesawat tanpa awak tailsitter stabil. Metode pengendalian yang akan digunakan adalah kontrol PID.  Proses pengendalian oleh PID ini membutuhkan sebuah sensor IMU yang dapat membaca pergerkan dan perubahan sudut pada pesawat tanpa awak tailsitter. Dari hasil pengujian dan analisa pemberian parameter Kp : 2,5, Ki : 0,250, dan Kd : 23 untuk kendali Pitch dan Roll memerikan hasil yang cukup baik, dimana pesawat tanpa awak tailsitter dapat terbang dan mempertahankan kesetabilan nya pada saat fase mengambang/hovering.
Rancang Bangun Game Puzzle The Tabperi Dengan Algoritme A* Berbasis Android
Authors: Melati Feni , Sujana Aprianti Putri , Nurhayati Sri
Published: April 2021

Unsur kimia merupakan mata pelajaran dalam sekolah tingkat menengah atas. Namun, tabel unsur kimia yang bersifat abstrak seringkali membuat siswa menjadi malas dalam menghafal dan mengingat suatu tabel periodik unsur kimia. Untuk membantu para siswa, salah satunya dengan cara memanfaatkan perkembangan teknologi dengan membuat aplikasi game edukasi dalam bentuk game puzzle 2 dimensi. Program aplikasi ini dimaksudkan untuk membantu siswa dalam mengasah daya ingat pada tabel periodik unsur kimia dengan cara menyusun susunan tabel yang telah di acak menjadi sebuah tabel yang utuh. Pengguna dapat memilih level permainan secara bebas sesuai dengan yang diinginkan. Program menggunakan algoritma a-star dan menerapkan metode heuristik. Algoritma a-star dapat menyelesaikan permasalahan secara optimal untuk menemukan jalan terpendek menuju tujuan. Penerapan metode heuristik digunakan untuk menyortir secara langsung hasil yang didapat tanpa harus menyusuri semua jalan lintasan. Hasil pengujian menunjukan semua fitur dan penerapan algoritma dalam aplikasi game ini sudah berjalan dengan semestinya.

Kata Kunci – Algoritma A-star, Game Puzzle, Tabel Periodik Unsur
Pengenalan Ekspresi Wajah dengan Metode Viola Jones dan Convolutional Neural Network
Authors: Reynaldo Reza Rizki , Maliki Irfan
Published: April 2021

Saat ini penggunaan kecerdasan buatan berkembang dengan pesat, diantaranya dimanfaatkan untuk mengenali ekspresi wajah manusia. Ekspresi wajah manusia memiliki tingkat pengenalan yang kompleks. Pada penelitian ini akan diterapkan deep learning untuk mengetahui seberapa besar tingkat akurasi dalam pengenalan ekspresi wajah. Metode yang digunakan dalam penelitian ini yaitu gabungan Viola Jones dan Convolutional Neural Network. Viola Jones digunakan pada tahap segmentasi dan Convolutional Neural Network untuk mengklasifikasi data. Dataset ekspresi wajah yang dianalisis terdiri dari bahagia, merah, muak, sedih, takut, terkejut dan normal sejumlah 2205 data. Pengujian yang dilakukan menggunakan confussion matrix dengan tingkat akurasi sebesar 96,14%. Dari hasil pengujian ini menunjukan bahwa metode yang diusulkan memiliki akurasi yang baik untuk mengenali ekspresi wajah.
Improvement of Imperialist Competitive Algorithm based on the Cosine Similarity Criterion of Neighboring Objects
Authors: Houtinezhad Maryam , Ghaffary Hamid Reza
Published: April 2021

The goal of optimizing the best acceptable answer is according to the limitations and needs of the problem. For a problem, there are several different answers that are defined to compare them and select an optimal answer; a function is called a target function. The choice of this function depends on the nature of the problem. Sometimes several goals are together optimized; such optimization problems are called multi-objective issues. One way to deal with such problems is to form a new objective function in the form of a linear combination of the main objective functions. In the proposed approach, in order to increase the ability to discover new position in the Imperialist Competitive Algorithm (ICA), its operators are combined with the particle swarm optimization. The colonial competition optimization algorithm has the ability to search global and has a fast convergence rate, and the particle swarm algorithm added to it increases the accuracy of searches. In this approach, the cosine similarity of the neighboring countries is measured by the nearest colonies of an imperialist and closest competitor country. In the proposed method, by balancing the global and local search, a method for improving the performance of the two algorithms is presented. The simulation results of the combined algorithm have been evaluated with some of the benchmark functions. Comparison of the results has been evaluated with respect to metaheuristic algorithms such as Differential Evolution (DE), Ant Lion Optimizer (ALO), ICA, Particle Swarm Optimization (PSO), and Genetic Algorithm (GA).
A New Approach for Textual Password Hardening Using Keystroke Latency Times
Authors: Mansour Khalid , Mahmoud Khaled
Published: April 2021

Textual passwords are still widely used as an authentication mechanism. This paper addresses the problem of textual password hardening and proposes a mechanism to make textual passwords harder to be used by unauthorized persons. The mechanismintroduces time gaps between keystrokes (latency times) that would add a second protection line to the password. Latency times are converted into discrete representation (symbols) where the sequence of these symbols is added to the password. For accessing system, an authorized person needs to type his/her password with a certain rhythm. This rhythm is recorded at the sign-up time.This work is an extension to a previous work that elaborates more on the local approach of discretizing time gaps between every two consecutive keystrokes. In addition, more experimental settings and results are provided and analyzed. The local approach considers the keying pattern of each user to discretize latency times. The average, median and min-max are tested thoroughly.Two experimental settings are considered here: laboratory and real-world. The lab setting includes students studying information technology while the other group are not. On the other hand, information technology professional individuals participated in the real-world experiment. The results recommend using the local threshold approach over the global one. In addition, the average method performs better than the other methods. Finally, the experimental results of the real-world setting support using the proposed password hardening mechanism.
A New Approach to Automatically Find and Fix Erroneous Labels in Dependency Parsing Treebanks
Authors: Bilgin Metin
Published: April 2021

Dependency Parsing (DP) is the existence of sub-term/upper-term relations between the words that make up that sentence for each sentence in the text. DP serves to produce meaningful information for high-level applications. Correct labeling of the text corpus used in DP studies is very important. There will be mistakes in the results of the studies that will be performed with the wrongly-labeled text corpus. If text corpus is labeled manually or automatically by human beings, then faulty cases will occur. As a result of the cases that may arise from human factors or annotations used for labeling, faulty labels will be on treebanks. In order to prevent these errors, detection, and correction of possible faulty labeling is very important in terms of increasing the accuracy of the studies to be carried out. Manual correction of possible faulty labels requires great effort and time. The purpose of this study is to create a model that automatically finds possible faulty labels and offers new label suggestions for faulty labels. With the help of the proposed model, it is aimed to detect and correct possible faulty labels that are included in a text corpus, and to increase consistency among the text corpus of the same language. With the help of the developed model, suggesting new labels for faulty labels by a language expert will be a great convenient for the specialist. Another advantage of the model is that the developed model provides a language-independent structure. It has succeeded in obtaining successful results in finding and correcting potentially faulty labels in experimental studies for Turkish. An increase in accuracy has been detected in studies carried out for languages other than Turkish. In investigating the accuracy of the results obtained by the system, the results were analyzed with the help of 10 different language experts.
Discretization Based Framework to Improve the Recommendation Quality
Authors: Ahmed Bilal , Li Wang
Published: April 2021

Recommendation systems are information filtering software that delivers suggestions about relevant stuff from a massive collection of data. Collaborative filtering approaches are the most popular in recommendations. The primary concern of any recommender system is to provide favorable recommendations based on the rating prediction of user preferences. In this article, we propose a novel discretization based framework for collaborative filtering to improve rating prediction. Our framework includes discretization-based preprocessing, chi-square based attribution selection, and K-Nearest Neighbors (KNN) based similarity computation. Rating prediction affords some basis for the judgment to decide whether recommendations are generated or not, subject to the ratio of performance of any recommendation system. Experiments on two datasets MovieLens and BookCrossing, demonstrate the effectiveness of our method.