bluuebunny/crossref_metadata_2025 huggingface dataset:
The Consequences of COVID-19 on Livelihoods in Suriname: Evidence from a Telephone Survey
Authors: Arteaga Maricruz , Beuermann Diether , Khadan Jeetendra
Published: April 2021

A nationally representative telephone survey on the consequences of the coronavirus pandemic in Suriname was conducted during the month of August in 2020. This paper presents a summary of the main findings of that survey and a review of the pandemic as of mid-April 2021. We found that household income was affected through employment losses, business closures and reduction of remittances. With data from the 2016/17 Suriname Survey of Living Conditions (SSLC) an additional level of analysis found that, although the shock to household income was widespread, pre-existing inequalities across income and gender groups were exacerbated.
Analysis of Vulnerability of Calabar Rainfall to Climatic Variability Events: A Critical Factor in Integrated Water Resources Management in the Tropical Coastal Location in Southeastern Nigeria
Authors: Amadi Solomon O. , Agbor Mfongang E. , Udo Sunday O.
Published: April 2021

In this study, Calabar annual total rainfall was analysed for trend and climatic variability events with focus on drought occurrence. Monthly rainfall data from in situ measurements over a 41-year period (1972-2012) were used for the study. Standard tests were used to evaluate the trends and variability in annual rainfall. Rainfall variability was estimated as standardized rainfall departures and used to identify and delimitate the dry and wet spell sequences of Calabar rainfall. The rainfall series were analysed for Standardized Precipitation Index (SPI) using SPSS Version 17 software. The least squares regression plot was executed using Excel 2010 to depict the trend, variability and regression parameters. The average annual rainfall for Calabar is 2984.64 mm with standard deviation of 394.9 mm. 36.59% of the period showed positive SPI while 63.41% of the period indicated negative SPI values. Wet spell dominated the later part of the period but sandwiched with dry spells whereas dry spell was dominant from 1972 to 1994. The area experienced a non-significant upward trend of 15.21 mm per year over the interval. The SPI values indicate that Calabar experienced distinct inter-annual rainfall cycles that represent mild to extreme droughts and wet spells which are a demonstration of consequential annual rainfall variability. The results underscore the need for effective monitoring of Calabar rainfall for prompt warnings and responses that would guarantee effective risk reduction and management in the run-in to the occurrence of the extreme events. The paper further highlights the need for data-driven approach to policy making in water resources management. This would provide a fascinating insight into the improvement in long-term water resources management in the city and its suburbs.
Development and Application of a Novel Green Water-Based Drilling Fluid
Authors: Li Hongjiang
Published: April 2021

In response to the technical and environmental protection requirements of water-based drilling fluids, this study independently developed a series of green supporting treatment agents for water-based drilling fluids such as the green loss reducer HB-1, green inhibitor HB-2, and green lubricant HB-3, etc., and proposed a green water-based drilling fluid system (HBDF) with good comprehensive performance. The proposed system has a heat resistance of 150°C, a HTHP (high temperature and high pressure) filtrate loss of 12 mL, a biological toxicity EC50 value greater than 105 mg/L, and a biodegradability BOD5/CODCr value of 16.2%. Now the developed HBDF system has been applied in more than 10 wells in SL oilfield, and the field application results show that the proposed HBDF system has stable rheological and filtrate loss performance, good anti-pollution ability, and easy and simple maintenance operations; after drilling, the biological toxicity of the drilling fluids can meet the environmental protection requirements, which has provided a technical reference for the research of green drilling fluids and the green development of SL Oilfield.
Developing a Multi-Stage Production Planning and Scheduling Model for a Small-Size Food and Beverage Company
Authors: Tirkeş Güzin , Çelebi Neşe , Güray Cenk
Published: April 2021

A great deal of research has been undertaken in recent years related to facility capacity expansion and production planning problems under deterministic and stochastic constraints in the literature. However, only a small portion of this work directly addresses the issues faced by the food and beverage industry, especially in small-sized enterprises. In this study, a Mixed-Integer Linear Programming model (MILP) is developed for production planning and scheduling decisions for a small-size company producing syrup and jam products. The main constraint is that the multiple syrup and jam production lines in the model share the same limited-capacity module designed for inventory planning. To this end, the present model offers an efficient solution for executing a multi-product, multi-period production line by finding the most satisfactory strategy to match the right product with the useable capacity leading to profit maximization. The present approach is capable of coping with varying demands by offering a detailed costing procedure and implementing an effective inventory model.
Pulse Width Modulation Technique for Multilevel Operation of Five-Phase Dual Voltage Source Inverters
Authors: Gupta Shailesh Kumar , Khan Mohammed Arif , Singh Omveer , Chauhan avendra Kumar
Published: April 2021

To supply five-phase variable speed drives, five-phase voltage source inverters are used. Some of the applications of five-phase variable speed drives are traction, electric & hybrid-electric vehicles, and ship propulsion. Different control systems are available for the controlled output of the five-phase VSI, but space vector pulse width modulation is popular because of its simpler digital implementation. In this paper, the SVPWM schemes have proposed and analyzed for the multilevel operation of a five-phase dual voltage source inverter. The proposed techniques do not contribute a voltage balancing issues such as in multilevel neutral point clamped (NPC) inverters. The author analyzed the performance of five-phase VSI based on THD and fundamental components. Matlab/Simulink model has provided for results verification.
ARCHIVAL MATERIALS ABOUT EVERYDAY LIFE OF THE POPULATION OF THE MIDDLE VOLGA CITIES IN 1941-1945
Authors: Shmatov E.N.
Published: April 2021

This article aims to study the archival collections of the Volga and Central Russian archives as sources of documentary information about the life of the urban population of the region during the great Patriotic war. The author notes that the use of numerous and diverse archival materials allows us to recreate a complete picture of the daily life of citizens of the middle Volga regions during the war.
PERSONAL FUND OF THE KUIBYSHEV WRITER M. TOLKACH: STRUCTURE AND HISTORICAL AND INFORMATIONAL POTENTIAL FOR STUDYING THE HISTORY OF SOVIET SOCIETY
Authors: Trukhanov R.O.
Published: April 2021

The article describes the biography of M. Tolkatch, his personal fund in the Central State Archives of the Samara Region is analyzed, the historical and informational potential of documents of the personal fund for specific historical research on the history of the Kuibyshev Writers' Organization in the 1960s-1970s is determined.
PERSONAL FUNDS OF THE NOBILITY AS A HISTORICAL SOURCE
Authors: Barinova E.P.
Published: April 2021

The article describes the funds of Volga archives formed by documents of personal origin of representatives of noble families of the Samara province. The information potential of sources, their representativeness and use possibilities are analyzed. The significance of the study of personal funds for the study of everyday life is revealed; the difficulties of introducing ego-documents into scientific circulation are noted.
PERSONAL ARCHIVES A.V. LUNACHARSKY AS AN INFORMATION RESOURCE FOR EDUCATION MODERNIZATION PROGRAMS
Authors: Bykovskaya G.A.
Published: April 2021

The article analyzes the programs for optimizing training in secondary technical educational institutions, developed by the People's Commissariat of Education in the 20s of the XX century, which are relevant today in the light of the demanded state project within the framework of the international quest «Young Professionals».
BIOGRAPHICAL MATERIALS OF A.A. GERAKLITOV IN FUNDS OF SARATOV REGIONAL MUSEUM OF LOCAL CORE
Authors: Pchelintsev I.A.
Published: April 2021

This article dedicated to characterize items in funds of Saratov Regional Museum of Local Core related to a well-known Saratov historian A.A. Geraklitov. Manuscripts, photographs, books and houseware appear as sources reconstructing individual events from the life of the scientist. Some subjects are firstly introduced into scientific circulation.
El enfoque de las capacidades como fundamento de una ética contemporánea
Authors: Silva Carreño Wilmer Hernando
Published: April 2021

Parte de la fundamentación actual de la ética deriva de las teorías y de las escuelas clásicas, particularmente occidentales y de base racionalistas, que se han preocupado por el sentido del buen vivir, incluso hasta normalizarlo. En este artículo se da cuenta del sentido en que el enfoque de las capacidades de Nussbaum puede contribuir a ampliar una fundamentación de la ética contemporánea, usando la fenomenología hermenéutica como ruta y base metodológica, dado que facilita y orienta la interpretación y construcción del discurso. Para lo anterior, primero se describe qué integra el enfoque de las capacidades en Nussbaum; segundo, se tematiza cuál es la comprensión de Nussbaum respecto al ser humano; tercero, se muestra cómo el enfoque de las capacidades difiere de las teorías éticas tradicionales, como la ética de la virtud, el utilitarismo y la deontología; y finalmente, se analiza en qué sentido se configura el desarrollo de la capacidad como fundamento de la dignidad. Se concluye que el enfoque de capacidades, además de posibilitar un espacio en el que podamos hacer juicios interculturales sobre los diversos modos de vida, ofrece alternativas de debate, por ejemplo, al considerar la ética frente a la “discapacidad” como uno de los asuntos de especial interés para la bioética.
La reproducción asistida
Authors: Peláez Fernández Palmira
Published: April 2021

La reproducción asistida es el punto de partida de esta reflexión. Con la bioética como evidencia de fondo, en este artículo se diseña un hilo argumental con el fin de justificar la propuesta “paradigma de perfección” o “argumentos para conseguir un deseo”. Esta parte de tres ideas y de cómo la afectan los principios de la bioética. Estas propuestas son: las técnicas de reproducción asistida como medio para buscar el ser humano perfecto, la utilización de estas técnicas con el objetivo de cumplir un deseo, y cuándo este deseo es soporte de una gestión comercial en la que el destino es comprar un hijo. Se ponen de manifiesto las distintas posturas de las religiones monoteístas sobre estas técnicas de reproducción. Dado que se está ante unas técnicas que se desarrollan en un ámbito en el que conviven muy diversas reacciones emocionales y estereotipos sociales, se hace uso o mal uso de ellas, bien sea cuando se crean clínicas “legales” o bien cuando se anuncian sus servicios y o reclaman donantes de óvulos como una conducta altruista. Además, tras esto se esconden multinacionales que comercian con las expectativas que estas personas ponen en esa acción.
Analysis of Methylation Status in Promoter Region of Γ- Globin Gene in Carrier and Affected Β-Thalassemia Patients with High Level of Fetal Hemoglobin in Comparison with Normal Individuals
Authors: Hamid Mohammad , Shojaei Zohreh
Published: April 2021

Introduction: Among the factors that may be associated with the re-expression gamma-globin in adults is the methylation pattern of the promoter region. The study aimed to determine the association between promoter methylation pattern of the gamma-globin gene in the carriers and affected beta-thalassemia individuals and its expression levels.
Methods: This study has been done as a case control- study. After taking blood samples from 30 patients and beta-thalassemia carriers and affected patients with fetal hemoglobin elevated as well as 30 normal individuals, genomic DNA was extracted. Six CpG sites of the promoter region and exon1 of the gamma-globin gene were analyzed by the bisulfite sequencing analysis method. Statistical analysis was carried out using a t-test. The values of p ≤ 0.05 were considered significant for comparing two studied groups. Data were analyzed using SPSS version 16 software.
Results: In this study, hypomethylation of the gamma-globin promoter region in the patients and carriers compared to showed a significant differences in three CpG sites +6, -53 and -162, respectively (p<0.05). In addition, in three cases, CpG site in position -162 was semi methylated; this situation was markedly different from other samples of the patients and normal cases.
Conclusion: Hypomethylation of the gamma-globin gene promoter probably has an auxiliary role in fetal hemoglobin increase.
A Semantic Extraction and Analysis for Traffic Density Using Traffic Images: A Critical Review
Authors: Abang Yusup Ruhana , Hui Wang Hui , Lin Wee Bui
Published: April 2021

Population growth in large cities has contributed to the increase in vehicles' number, leading to the traffic congestion problem. Incompetent traffic supervision could squander an inconsiderable number of man-hours and might lead to fatal consequences. Therefore, intelligent traffic surveillance systems have to carry more significant roles in highway monitoring and traffic management system throughout the years. Although vehicle detection and classification methods have evolved rapidly throughout the years, they still lack high-level reasoning. Accurate and precise vehicle recognition and classification are still insufficient to develop an intelligent and reliable traffic system. There is a demand to increase the confidence in image understanding and effectively extract the images conformed to human perception and without human interference. This paper attempts to summarize a review on several methods that semantically extract and analyze traffic density with image processing techniques. Three (3) methods that have been selected to be discussed in this paper are semantic analysis of traffic video using image understanding, mining semantic context details of traffic scene, and integrating vision and language in semantic description of traffic events from image sequences. Each method is discussed thoroughly, and their outstanding issue is deliberated in this paper.
Efficient Supervised Features Learning for Remote Sensing Image Classification
Authors: Salih Sarah Qahtan Mohammed , Khammas Abdul Sattar Arif , Mahmod Ramlan
Published: April 2021

The features extracted from the fully connected (FC) layers of a convolutional neural network (ConvNet or CNN) can provide accurate classification results as long as the labelled datasets are large enough. On the other end, high accuracy remote sensing image (RSI) classification is demanded various implementations such as urban planning, environmental monitoring, and geographic image retrieval. Many studies have been presented in this domain; however, satisfactory classification accuracy is yet to be achieved. In this study, the proposed method of fine-tuning the pre-trained ConvNets (GoogleNet, VGG16, and ResNet50) on RSI, extracting features from the last fine-tuned FC layer of these networks and reprocess the extracted features for classification by SVM, produced high classification accuracy. Extensive experiments have been conducted on three RSI datasets: the NWPU, AID, and PatternNet. Comparative results over the selected datasets demonstrate that our method considerably outperforms the state-of-the-art best-stated results. Also, the overall accuracy (OA) and confusion matrix report quantitative evaluation. Our best outcomes from the first part were 99.54%, 94.60%, and 94.83% on the PatternNet, NWPU, and AID datasets, respectively, achieved by fine-tuned ResNet50. Moreover, the best classification accuracies with training ratios 20% and 50% on the AID dataset, 10% and 20% on the NWPU dataset, and the 10%, 20%, 50% and 80% on PatternNet dataset were 95.72%, 97.53%, 96.19%, 96.85%, 99.60%, 99.56%, 99.75% and 99.80% respectively. The classification performance of each class was estimated using a confusion matrix for the three datasets.
Lithofacies Classification Using Supervised and Semi-Supervised Machine Learning Approach
Authors: Hardanto Lilik T. , Wulandhari Lili Ayu
Published: April 2021

The machine learning approach can help Geoscientists do their work in well log analysis to developing the oil and gas field. Prediction categorical or numerical response variable using a set of predictor variables supervises and semi-supervises learning is an important goal of the machine learning approach in classifying lithofacies using well log data. Semi-supervised classification offers the possibility of exploring the structure of the data without entirely external knowledge or guidance in the form of target or class information, and semi-supervised is very rarely research in the field of lithofacies classification.  Well log data in gamma-ray, resistivity, neutrality, and density logs are collected and selected for data processing and transformation. The use of machine learning algorithms such as Naí¯ve Bayes, SVM, and Decision Tree is to find the log pattern or pattern classifications of lithofacies in supervised and semi-supervised to create a model with conditions requiring the change of data and the corresponding requirements. All supervised machine learning algorithms have the best accuracy because algorithms provide useful predictive in classifications based on the target but not if there are no targets given or semi-supervised. This paper compares some of the famous classification algorithms of machine learning, such as Decision tree, SVM, and Naí¯ve Bayes, on classifying lithofacies with supervised and semi-supervised learning. This research found that the semi-supervised learning of Naí¯ve Bayes has performed well in classified lithofacies. In contrast, in supervised learning, Decision Tree and SVM are superior in accuracy and visualization approach based on expert’s interpretation.
Assessment of Genetic Diversity in Various Yield Traits to Determine a High Yielding New Type of Upland Rice
Authors: Herawati Reny , Alnopri - , Masdar - , Joko Usman Kris , Murcitro Bambang Gonggo
Published: April 2021

This experiment's objective was to estimate the genetic diversity of F5 populations on various yield components for developing high-yielding upland rice. The experiment was carried out from April to August 2018 at Semarang Village, Bengkulu, Indonesia. Plant materials used in the experiment were 160 accessions of F4, obtained from a pedigree selection of crossing between two local landraces (Sriwijaya and Bugis) and two introduced accessions (IR-148 and IR-7858-1). The experiment was arranged in Augmented Design with a spaced planting system (20 x 20 cm). The variance between populations was determined by Principal Component Analysis (PCA) with XLSTAT version 9.0. Broad sense genetic diversity was found for the number of traits, such as number of panicles, the total number of grains per panicle, number of empty grains per panicle, number of filled grain per panicle, percentage of empty grain, the weight of 1000 grains, the weight of grain per hill, which potentially improved high yielding.  These genotypes were categorized into three groups. Group I showed superior traits for the total number of grains per panicle, the number of filled grain per panicle, weight of 1000 grains, and weight of grain per hill found in genotypes BKL4-B-2, BKL3-B-3, BKL4-B-3, BKL3-B-2. Group II had superior traits for panicle length, the number of empty grains per panicle, and the percentage of empty grain were BKL1-RS*1-3, BKL1-RS*1-1, BKL3-RS*1-1, BKL3-RS*1-3, BKL1-RS*1-2, BKL2-RS*1-2, and BKL2-RS*1-1. Groups III was superior to the number of panicle traits found in genotypes BKL2-B-2, BKL3-B-1, BKL1-B-1, BKL1-B-2, and BKL2-B-1.
Geochemical Analysis of Metal Minerals on Kuantan Singingi Regency, Riau Province as a Connection part of Bukit Barisan Mountain, West Sumatera, Indonesia
Authors: Kausarian Husnul , Rahmanto Ridwan , Suryadi Adi , Putra Dewandra Bagus Eka , Mairizki Fitri , Lubis Muhammad Zainuddin
Published: April 2021

The research area is located in Muara Lembu Village, Singingi District, Kuantan Singingi Regency, Riau Province. Located at coordinates 0°25'40.85"S - 101°17'50.82"E and 0°26'45.50"S - 101°19'27.81"E. The research area's landform consists of slightly structural steep, structural sloping hills, and low denudational hills. The study area consists of a rock unit, which is claystone units indicated by a thin layer that formed metal minerals because of the erosional process in several places, which the erosion process transported to the research area. It is supported by thrust slip fault, resulting in gaps at the weak zone and eroded minerals filling and changing the claystone composition. At the same time, the oxidation process occurred in the research area. The geomorphology and stratigraphy analysis results show three types: Slightly Structural Steep, Structural Slooping Hills, and Low Denudational Hills. The results of Genesis and Potential Minerals in the study area consist of carrier rocks from the Claystone Unit. The deposition process can be called Sediment Genesis. The results of X-Ray Fluorescence (X-RF) and X-Ray Diffraction (X-RD) tests showed that the highest minerals are silica (SiO2) with metal mineral potentials such as pyrolusite (MnO2), Muscovite (H2KAL3Si3O12), Graphite (C), Hematite (Fe2O3), Aluminum Oxide / Corundum (Al2O3), Manganese (Mn), Silver (Ag), and Titanium (Ti). This research showed the economic value in the form of iron and steel.
Transfer Data from PC to PC Based on Li-Fi Communication Using Arduino
Authors: Aldarkazaly Zahraa Tareq , Younus Manal Fadhil , Alwan Zainab Salim
Published: April 2021

Light Fidelity (Li-Fi) is a new technology that has been developed in the last few years and still needs more investigation and experiments to prove its perfection to be an alternative solution for wireless fidelity (Wi-Fi) technology. Li-Fi utilizes light as a medium of communication instead of traditional radio frequencies as in Wi-Fi. Li-Fi technology has the essential features compared to Wi-Fi, such as its ideal for high-density wireless data coverage in a confined area and reducing radio interferences issues. In this paper, a PC-to-PC wireless data transfer system is proposed based on Li-Fi technology. Data is transmitted from transmitter Pc via the light of an array of high-power white LEDs connected to Arduino UNO. The data is then received on the PC receiver using a photodiode, connected to another Arduino UNO device, to sense the light and decode it to its original format. This work aims to improve the transmission and reception mechanism by increasing the data bit rate. After experimenting, the evaluation results showed that the data bit rate was improved using the proposed transmission mechanism and reached up to 147 bps with an accuracy of 100%, over 20 cm as a distance between the transmitter and receiver.
Modifications of Heat Transfer and Induced Flow Rate of a Solar Chimney by an Obstacle in the Air Channel
Authors: Nguyen Y Quoc , Huynh Trieu Nhat , Pham Mai-Anh Ho
Published: April 2021

Using renewable energy resources in buildings has been increasing for saving energy. Among widely used methods, solar chimneys absorb solar radiation and induce an airflow for ventilation, heating, or cooling buildings. The performance of a solar chimney depends on the heat transfer in its air channel, which can be modified by changing the shape of the heat exchange surface. In this study, we examine the effects of a rectangular obstacle placed on the heated surface of the air channel of a solar chimney. A numerical model was built with the Computational Fluid Dynamics (CFD) technique. By changing the geometries of the chimney and of the obstacle, and location of the obstacle, it was found that the obstacle had strong effects on the local flow and heat transfer properties close to the object, particularly the Nusselt number and the temperature field. However, average quantities of the whole air channel flow, such as the averaged Nusselt number and the induced flow rate, were modified insignificantly, except for the temperature rise through the chimney and the thermal efficiency. The change of the flow rate and the average Nusselt number was 5.0% while the temperature rises and the thermal efficiency was up to 13.0%. The height of the obstacle had more influence than the length. This study suggests more investigations to achieve the objective of enhancing the induced flow rate for ventilation of buildings with an obstacle in the air channel of a solar chimney.
Efficient Placement of Pressure Sensors of a Sitting Cushion Stitched by Conductive Thread for Sitting Position
Authors: Moon Byung Hyun , Ryu Jeong Tak
Published: April 2021

In this paper, efficient placement of pressure sensors is tested for correct posture under sitting cushion using conductive thread to connect the pressure sensors. Conductive thread Ada-641 from the Adafruit industries is used to connect sensors for the sitting cushion. In order to detect the correct sitting postures, an Arduino-based cushion seat with 16 pressure sensors is implemented. A conductive thread connects the sensors to accommodate the comfort of the sitting cushion. In order to test the efficient placement of the pressure sensors, several types of sensor locations are suggested to identify sitting postures. The least number of sensors included for a given type of pressure sensor location is four. Sitting posture detection with 8 and 12 sensors is also tested. The maximum number of sensors included in the experiment is 16. The efficient placement of the sensors is decided by comparing the detection probability of the correct sitting posture for a different number of sensors included in the sitting posture test. It is shown that the correct sitting posture can be detected 100% by using 8 sensors out of 16 sensors. The test results show a guideline for the minimum number of sensors required for reliable, correct posture detection. It is also shown that the performance of the sitting cushion with conductive thread type sensors is as good as the one with the copper wire connection.
Characterization of River Sediments in Loja-Ecuador
Authors: Andrade Lescano Gabriela Carolina , Matheus Mayorga Alex Mauricio , MartÃ¬nez-Gomez Javier
Published: April 2021

This research's main objective is to delineate areas with a high concentration of "pollutant" elements that imply a risk for the ecosystem and inhabitants' health in the Cordillera Real, south of Ecuador. To this end, a survey was carried out applying statistical analysis of the data. Specifically, the method of ordinary Kriging and Lepeltier is used to sort the data in populations according to their concentration. Previously, the information was compared with national (TULAS) and international regulations (Environmental Canada). These metals' spatial distribution is shown in concentration maps for each element (Hg, Pb, Zn, As, and Cu), where the potential villages exposed to these anomalies are displayed. In this sense, the samples' chemical digestion was conducted to quantify the atomic emission technique's before-mentioned pollutants' concentration. It was also correlated with geology, mineral occurrences, and metallogeny evidence to conclude that Pb and Zn anomalies are related to San Lucas granodiorite's intrusion, whereas Cu and Hg with local mineralization of sulfides, and as may be with domestic and industrial discharges. Finally, even though the anomalous concentrations of metallic elements were found to be characteristic of the lithology, cautions should be taken to safeguard the health of people and agriculture because there is evidence of elements such as As and Hg bioaccumulation in species that are part of the food chain.
Investigate the Thermal Behavior of the Portable Weather Monitoring System Based on Arduino Nano
Authors: Burjes Ammar Yaseen , Najm Haneafa Yahya , Aziz Ghader Salim
Published: April 2021

This work aims to achieve a functional system in terms of software and hardware to measure humidity with temperature and raining fall. Also, this system allows monitoring the date and time. We used Arduino Nano with the interfacing of the DHT22 sensor and a raindrop sensor placed in the local environment to measure the mentioned data. After designing the system that depends on the microcontroller Embedded on the Arduino board, we will display the data on a screen of the PC by the Arduino window (serial monitor) and display it on the LCD screen. This paper describes a simple portable design for humidity, temperature, and rain or no rain. The portable design can be made with a low cost of electronic components. It is efficiently and locally available so that it can be used to monitor weather conditions at any place. The test results showed that this system's component is small and can be packaged in a small plastic box. Besides, through the programming, we recorded the data on the Excel program, and at the same time. The data were recorded in a memory added to the manufactured system. The data obtained every five seconds are the (date, time, temperature, humidity, weather if rainy or not rainy). The system consists of two parts; the first part is inside the indoor, and it can be placed outdoor as needed and the second part is a rain sensor that can be placed outdoor. In case of rain, the buzzer and LED can be turned on to indicate the condition of rain.
A Review of Preliminary Experimental Factors of Making Geopolymer Paste as a Passive Fire Protection System
Authors: Farida Fransisca Maria , Surahman Adang , Sofwan Ananta
Published: April 2021

A decrease in the elastic modulus and yield strength due to the creep process is the changes contained in the material that is burning. One strategy to counter this is by using passive fire protection systems. The system is built into the structure to control the fire by using building materials and does not require any special operations in the event of a fire. This study is a review of a new study of passive fire protection systems. This research report contains a review regarding the preliminary study of the manufacture of fireproof new materials from industrial waste that is economical and environmentally friendly. Manufacture of new materials is made to overcome deficiencies in fire-resistant material that exists today. The purpose of this study is to analyze experimental factors, which are influence the making of experimental new fireproof material that is smart and innovative materials for civil engineering. Geopolimerization method that is used in this study comes from the development of brick manufacturing method as one of the fire-resistant material that exists today. The main results of this study are the major factors that influence the making of pasta geopolymer as passive fire protection. The discussion will be related to the elements of determinant manufacture of fire-resistant geopolymer paste. The conclusion is factors that supporting the manufacture of new fire-resistant material with geopolymer method.
Application of 60/70 Grade Bitumen with Layer Variations on Ballast Structures
Authors: Setiawan Dian M.
Published: April 2021

The conventional track application dominates the Indonesian rail track type. The rail track deterioration due to the overloading train becomes a crucial issue since it leads to high maintenance costs. Damage to the rail track can reduce its service life and carrying capacity. This research utilized the 60/70 grade bitumen as a binding material and stabilization of ballast structure. The aim is to analyze the mechanical behavior of new-ballast and poor-ballast structures, with 4% of the 60/70 grade bitumen in one layer (ballast surface layer) and three layers. The specimen’s weight, vertical deformation, elastic modulus, and ballast material abrasion have been analyzed using a UTM compressive strength test. The most obvious finding to appear from this research is that the new-ballast-based specimen, as for being free of mud and dust, was lighter in weight than the poor-ballast-based sample. Furthermore, the new-ballast and poor-ballast-based specimens added with 4% of the 60/70 grade bitumen had a lower vertical deformation than the baseline specimen. The position of 4% of the 60/70 grade bitumen on the ballast surface layer produced an optimum load distribution to the overall ballast layer. Also, the specimens consisting of new-ballast produced a higher elastic modulus compared to the specimens comprising poor-ballast. Lastly, the presence of the well-distributed asphalt on three layers of ballast structure could produce the minimum abrasion value due to the possibility that asphalt materials could protect ballast materials from abrasion.
ORIGEM E DESENVOLVIMENTO LÓGICO DO DINHEIRO: CONTROVÉRSIAS MARXISTAS
Authors: Silva Giliad De Souza
Published: April 2021

O texto objetiva: i) comparar a leitura de diversos intérpretes marxistas que trabalham com a categoria dinheiro, sobretudo como se compreende sua origem e desenvolvimento; ii) delimitar um espaço teórico para a exposição de uma teoria monetária especificamente marxista e; iii) mostrar o atual estado das artes desta teoria. Para isso, necessário se faz localizar as aproximações e divergências conceituais, centrando-se na formulação da origem lógico-histórica do dinheiro, mediante a definição e precisão do conceito, o que se entende por valor e mercadoria e a relação do dinheiro no processo de troca. Para apresentar as similitudes e dissimilitudes dos argumentos dos diversos autores, o caminho aqui percorrido não apenas apontou o que fala cada um deles, porém “os colocou para dialogar”. Em síntese, o texto expõe as posições que aqui se entende como as mais significativas sobre questões elementares do dinheiro, dentro do marxismo.
Memórias em trânsito - as ditaduras brasileira e argentina em três romances brasileiros contemporâneos
Authors: Checchia Cristiane
Published: April 2021

Mediante a vigorosa máquina de silêncio que se impôs até recentemente no Brasil a respeito da última ditadura, tornou-se recorrente pensar nossos processos de memória analisando-os em comparação aos demais países do Cone Sul. Entre a análise do conjunto da região e a singularidade nacional, o processo brasileiro revela-se frequentemente “por subtração”, a partir do que não foi feito em relação aos vizinhos, sobretudo em relação à Argentina. À luz da política revisionista e autoritária do atual governo, este artigo se propõe a especular sobre os desdobramentos de nossos processos bloqueados de memória e como tais bloqueios podem ser enfrentados por uma memória em trânsito, mobilizada literariamente na conexão das histórias recentes do Brasil e da Argentina, a partir da leitura de três romances brasileiros publicados recentemente: Pessoas que passam pelos sonhos, de Cadão Volpato (2013), A resistência, de Julián Fuks (2015) e Mar azul, de Paloma Vidal (2012).
Trabalhadores das águas: impactos socioeconômicos e mudanças na pesca artesanal (Bragança-PA) (Edição 480)
Authors: Alves Alexandre De Brito , Lima Francisco Daniel Mota
Published: April 2021

A pesquisa realiza um breve diagnóstico acerca dos impactos socioeconômicos e ambientais advindos do crescimento da pesca industrial em Bragança-PA, desde a década de 1980. Com efeito, analisa como os pescadores artesanais estão sendo afetados por aquela atividade pesqueira e como criam estratagemas para continuar utilizando a pesca como recurso tradicional à sobrevivência. Os procedimentos metodológicos aplicados consistiram em entrevistas semiestruturadas com 04 pescadores e 04 ex-pescadores habitantes em Bragança, além de pesquisas bibliográficas sobre a pesca local. Inclui-se na metodologia, igualmente, a observação direta na feira livre da cidade, principal polo de comercialização de pescados do lugar em foco. O crescimento da atividade pesqueira e o aumento da comercialização intensificaram a exploração dos espécimes às proximidades da costa estuarina bragantina, o que pode ter reduzido a quantidade e a biodiversidade de peixes. Interpretaram-se, também, outros fatores, tais como: a) maior dependência dos pescadores artesanais em relação aos atravessadores; b) mudanças nas práticas de trabalho: antigos pescadores artesanais transformam-se em “operários” das grandes embarcações; e c) o advento dos motores a diesel, que auxiliou no deslocamento e no aumento da exploração da fauna aquática.Palavras-chave: Pesca artesanal. Pesca Industrial. Impactos Socioeconômicos. Bragança-PA.
LASER TECHNOLOGY TO REMOVE PAINT COATINGS IN THE PROCESS OF REPAIR AND MAINTENANCE OF AIRCRAFT (review)
Authors:   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Ospennikova O.G. , Kozlova A.A. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Kozlov I.A. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials»
Published: April 2021

A number of domestic and foreign publications devoted to research on the possibility of using laser surface treatment technologies for cleaning from dirt, removing paint coatings and preparing the metal surface for subsequent technological operations are considered. The most striking examples of the use of technologies in the foreign aviation industry are given and the high readiness of their implementation in practice is noted. Theoretical information about laser technology is presented and the most progressive directions are highlighted.
APPLICATION OF CYANATE ESTER MATERIALS (review) Part 1. Aviation and space structures
Authors:   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Dolgova E.V. , Lavrova K.S. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials»
Published: April 2021

The review concerns the major application of materials based on cyanate ester resins in various branches of technology, indicating examples of implementation in modern devices. This article being the first part of the review highlights the cyanate esters implementation in the development of materials for aviation and space technology. The paper presents the most significant properties of polycyanurates in relation to their application. Information about the development of new cyanate ester resin-based composite materials for aircrafts and space shuttles is provided.
Indoor temperature monitoring electronic device
Authors: Larshina Evelina , Bashoyan Roman , Zhuravleva Yulia , Mikaeva Svetlana , Chuvatkina Tatiana , Kovalenko Olga , Dashkina Yulia
Published: April 2021

We have created an energy saving Arduino-based indoor temperature monitoring device and its light monitoring modification. The Arduino has large versatility as well as a variety of hardware and software tools and side modules to implement this kind of projects. For the purpose of this research, the Arduino is interfaced with the DS18B20 temperature sensor to measure the surrounding temperature and the LM393 light sensor module to get the device modified to add the light monitoring option. Arduino IDE is used to program Arduino Nano V3.0.
The results of applications of the funnel risk assessment approach to distance learning
Authors: Livshitz Ilya
Published: April 2021

Funnel analysis is a powerful risk assessment method. The method is applicable to education, particularly, to distance learning. The author presents his research performed at ITMO University, Russia, which was dedicated to distance learning success assessment based on the funnel risk assessment approach. The research was conducted during the time period from September 2020 to December 2020 and involved cybersecurity students, major #10.04.01. The results of the research have confirmed assumptions regarding possible risks of students’ performance in learning and successful risk management. Funnel risk analysis can be recommended for course planning, performing, and assessment at educational institutions.
Analisis Tingkat Kesehatan Bank dengan Metode RGEC Pada BCA Syariah dan Panin Dubai Syariah
Authors: Andriani Andriani , Permatasari Indah
Published: April 2021

This research is motivated by the development of increasingly rapid Islamic banking and increasing public trust in banks. Bank health services are one of the management controls because bank health is a reflection of the bank's performance. This study aims to see, describe and compare the soundness level of banks at BCA Syariah and Panin Dubai Syariah using the RGEC method (Risk Profile, GCG, Earning, Capital) with new SEOJK Number 10 / SEOJK.03 / 2014. The results show that the NPF BCA Syariah and Panin Dubai Syariah are in a very healthy position. FDR BCA Syariah is in a fairly healthy position and Panin Dubai Syariah is in an unhealthy position. ROA BCA Syariah and Panin Dubai Syariah are in a fairly healthy position. NOM BCA Syariah and Panin Dubai Syariah are in a healthy position. CAR BCA Syariah and Panin Dubai Syariah are in a very healthy position. The BCA Syariah GCG Report is in a very healthy position and the Panin Dubai Syariah GCG Report is in a healthy position. The analysis results show a significant difference between the performance of BCA Syariah and Panin Dubai Syariah, especially in the NPF, FDR, NOM and CAR variables, while there is no difference in the ROA variable.
The Effect of Team Games Tournament on Students' Reading Motivation and Reading Comprehension
Authors: Rahmawati Sari
Published: April 2021

The  purposes of the research were to find out the effect of Team Game Tournament (TGT) technique on students reading motivation and reading skill. The research design was quasi experimental research with the type was pre-test-posttest non-equivalent group design. Two groups (64 students) of the eighth grade were selected as samples by using cluster sampling. The techniques of data collection were questionnaire and reading comprehension test. There was difference in students reading motivation between control and experimental group. It was indicated by the value of sig. (2 tailed) was 0.016. It meant that TGT technique had a significant effect on students reading motivation. Moreover, it was also found that there was difference in students reading skill between control and experimental group. It could be seen from the value of sig. (2 tailed) was 0.000. Hence, TGT technique affected students reading comprehension. In conclusion, TGT technique had a significant effect on students' reading motivation and reading comprehension.
Can Workplace Financial Counseling Help Lower-Income Workers Improve Credit Outcomes?
Authors: Despard Mathieu R. , Zeng Yingying , Fox-Dichter Sophia , Frank-Miller Ellen , Grinstein-Weiss Michal
Published: April 2021

Financial counseling has been found to be effective in improving consumers' credit outcomes and could be expanded through the workplace to reach lower-income workers who struggle with various financial challenges. We examine engagement and credit outcomes associated with a workplace financial counseling program offered to 2,849 frontline workers in New York City. Age and credit scores helped explain variation in types of engagement in services. Credit outcomes were modest on average, but greater among workers who received three or more counseling sessions, had low and no baseline credit scores, and reduced the number of delinquent and collections accounts on their credit reports. Workplace financial counseling is a promising strategy to proactively promote credit outcomes among frontline workers, though counselors should be flexible in offering services and help workers access affordable credit products available to those with subprime credit scores and increase financial slack to lessen dependence on credit.
Does Adolescent Free Time Matter? Exploring the Association Between Adolescent Leisure Activities and Dating Violence Perpetration
Authors: King Dione Moultrie , Orihuela Catheryn A. , Mrug Sylvie , Martino Maria
Published: April 2021

Objective

Adolescence is a developmental period characterized by independent leisure activities and increased interest in intimate dating relationships. Despite focused examinations on dating violence (DV), research has not yet explored connections between leisure activities and DV.

Methods

This exploratory study uses Birmingham Youth Violence Survey (BYVS) Wave 3 data to elucidate the relationship between leisure activities and DV perpetration among urban youth aged 16–23 (N = 497, Mage= 17.64, 52% female, 81.3% Black, 18.7% White).

Results

Findings support the relationship between specific types of leisure activities and DV perpetration.

Conclusion

Practitioners, researchers, and policy makers with a vested interest in adolescent health should pay attention to specific leisure activities (e.g., social, sports, and media) given their associations to DV perpetration.
Why Critical Incident Stress Management Teams Matter in Primary Care
Authors: Batist Kira , Mallow Alissa
Published: April 2021

Objective

Critical incident stress management (CISM) teams can be adapted in urban primary care clinics to address and process traumatic events in primary care. A guide for implementing the CISM team model within this setting is delineated.

Methods

Review of existing literature and guide to implementation of CISM team in primary care.

Results

Respondents reported the team validated their reactions to the critical incident and were grateful for CISM presence.

Conclusion

Despite indications that vicarious traumatization, burnout, and compassion fatigue are rising (Bodenheimer & Sinsky, 2014; Coles et al., 2013; Woolhouse et al., 2012), there is little information about efforts to address this. Operating and emergency rooms and intensive care units utilize CISM (Maloney 2012; Powers, 2015); however, it's overlooked in primary care (Blacklock, 2012; Naish et al., 2002).
SISTEMATIKA MUSHAF AL-QUR’AN
Authors: Mujiburrohman Mujiburrohman
Published: April 2021

Al-Qur’an merupakan kalam Allah yang absolut kebenarannya. Namun,  tentang sistematika atau susunan tertib peletakan surah-surahnya, terdapat perbedaan dalam urutannya. Diantara sahabat ada yang menyusun  sesuai dengan masa turunnya dan ada yang menulis mulai dari surah al-Fatihah sampai surah al-Nas seperti pada mushaf Utsmani. Beberapa mufassir dalam menjawab permasalahan tersebut, mengacu kepada hadis nabi saw., dan sejarah yang berlaku dikalangan para sahabat atau menjawab dengan menelaah dari keduanya, sehingga terjadi tiga perbedaan pendapat. Golongan pertama menyatakan bahwa sistematika mushaf Al-Qur’an bersifat tauqifi . Kedua, mereka yang lebih mempertimbangkan pada sejarah para sahabat, menganggap bahwa mushaf Al-Qur’an merupakan ijtihadi. Sedangkan golongan ketiga memandang bahwa sistematika mushaf Al-Qur’an sebagian bersifat tauqifi dan sebagian lagi bersifat ijtihadi. Golongan yang nomor tiga ini berpendapat bahwa penempatan surah-surah dalam mushaf Al-Qur’an hanya sebagian saja yang ditunjukkan oleh nabi saw (tauqifi). Sedangkan sebagian yang lain merupakan hasil ijtihad para sahabat. Indikasi itu dapat dilihat dengan adanya perbedaan catatan Al-Qur’an yang dimiliki oleh beberapa sahabat. Dari alasan ini, golongan ketiga menyatakan, bahwa sistematika mushaf Al-Qur’an adalah tauqifi dan ijtihadi. Kesimpulan, sistematika mushaf Al-Qur’an bersifat tauqifi berdasarkan dalil nash.