bluuebunny/crossref_metadata_2025 huggingface dataset:
NUMERICAL STUDY OF DETONATION PROPAGATION IN VISCOUS TURBULENT FLOW IN A DUCT
Authors:   Central Aerohydrodynamic Institute named after N. E. Zhukovsky, SABELNIKOV V.A. ,   ONERA — French Aerospace Lab, VLASENKO V.V. ,   Central Aerohydrodynamic Institute named after N. E. Zhukovsky,   Moscow Institute of Physics and Technology Educational and Research Center of Aeromechanics and Flight Engineering, BAKHNE S. ,   Central Aerohydrodynamic Institute named after N. E. Zhukovsky,   Moscow Institute of Physics and Technology Educational and Research Center of Aeromechanics and Flight Engineering, MOLEV S.S. ,   Central Aerohydrodynamic Institute named after N. E. Zhukovsky, TROSHIN A.I. ,   Central Aerohydrodynamic Institute named after N. E. Zhukovsky,   Moscow Institute of Physics and Technology Educational and Research Center of Aeromechanics and Flight Engineering
Published: February 2023

The experiment by J. C. Bellet and G. Deshayes (1970) with upstream motion of a detonation wave in a duct with supersonic flow of H2/O2 mixture is simulated numerically on the basis of two-dimensional (2D) unsteady Reynolds-averaged Navier–Stokes (RANS) equations with finite-rate reactions. The one-dimensional (1D) Chapman–Jougouet (CJ) detonation and the self-sustaining detonation, interacting with turbulent boundary layers, are compared for several values of relative heat release in the wave. The phenomenon of increasing the velocity of self-sustaining detonation, observed by J. C. Bellet and G. Deshayes, is reproduced in calculations. The gasdynamic flow structure with bifurcation of normal detonation wave because of interaction with separated boundary layers is analyzed in the reference frame of the wave (assuming, in correspondence with experiment, that the flow around the wave is quasi-stationary in this frame). Heat release along the streamlines is considered. A simple quasi-1D gasdynamic theory, explaining the growth of the detonation velocity, is proposed.
EXPLOSION AND DETONATION PROCESSES IN CHEMICALLY ACTIVE BUBBLY SYSTEMS
Authors:   Siberian State University of Geosystems and Technologies (SSUGT), FOMIN P. A.
Published: February 2023

Review of the results of the study of explosive and detonation processes in chemically active bubbly mixtures obtained by the present author and his colleagues is presented. These results expand and complement practice of theoretical and experimental investigation of high-rate processes in the mixtures under consideration.
FAST COMPLEX FOR MONITORING DROPLETS AND VAPORS IN CLOUDS AND AEROSOL FLOWS AT PULSED INJECTION OF LIQUID FUELS INTO THE ATMOSPHERE
Authors:   National Research Center “Kurchatov Institute”, ZAGNITKO A.V. , ZARETSKIY N.P. ,   National Research Center “Kurchatov Institute”, MATSUKOV I.D. ,   National Research Center “Kurchatov Institute”, PIMENOV V.V. ,   National Research Center “Kurchatov Institute”, SALNIKOV S.E. ,   National Research Center “Kurchatov Institute”, FEDIN D. YU. ,   National Research Center “Kurchatov Institute”
Published: February 2023

The reliable assessment of the consequences of accidental injection, leaks, spills, and precipitation accompanied by the formation of aerosol and vapor clouds is needed for ensuring the industrial safety of the facilities involved in the manufacture, storage, and transportation of liquid fuels and liquefied natural gas (LNG) [1–8]. Such accidental events usually start from the uncontrolled outflow of liquid fuel and LNG followed by evaporation and mixing of fuel vapors, methane and vapors containing a wide fraction of light hydrocarbons, including ethane, propane, butane, and other light alkanes, with an ambient atmosphere. For example, the mixtures of LNG with air are flammable and explosive at concentration C = 5–15 %(vol.) [1–9]; so, the development of physical and chemical means for fast and remote monitoring is of both scientific interest and practical importance for the environment and development of safe and clean energy. The data on the composition of hydrocarbon clouds required for modeling large-scale accidents at fuel and energy facilities associated with pulsed technogenic and/or unauthorized injection of combustible liquids and LNG into the atmosphere and with its spilling and precipitation on the ground are limited [1–8]. Experimental analyses of them are quite complex. In addition, due to potential danger posed by mixtures of hydrocarbons and air, we must perform remote analyses of them at distances of up to 5–10 km with fast data transfer to main information collection server cite1-zg, 2-zg, 3-zg, 4-zg, 5-zg. Finally, along with technical difficulties, large-scale experiments require substantial financial and resource support. The aim of this work was to develop the fast complex for monitoring of droplets and aerosol flows at pulsed injection of liquid fuels and LNG into the atmosphere for the detonation purposes.
PRESSURE MEASUREMENTS IN ROTATING DETONATION ENGINES
Authors:   N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences, IVANOV V.S. ,   Federal State Institution “Scientific Research Institute for System Analysis of the Russian Academy of Sciences”, FROLOV S.M. ,   N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences,   Federal State Institution “Scientific Research Institute for System Analysis of the Russian Academy of Sciences”, SERGEEV S.S. ,   N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences, MIRONOV YU. M. ,   Joint-Stock Company “MIC NPO Mashinostroeniya”, NOVIKOV A.E. ,   Joint-Stock Company “MIC NPO Mashinostroeniya”, SCHULZ I.I. ,   Joint-Stock Company “MIC NPO Mashinostroeniya”
Published: February 2023

The influence of waveguide tubes on the signals received by remote pressure sensors measuring pressure histories in pulsed detonation engines (PDE) and rotating detonation engines (RDE) is studied computationally. Two types of pressure sensors are considered: low-frequency static pressure sensors and high-frequency sensors of pressure pulsations. Three approaches to solving the problem are used: based on Euler (inviscid flow), Navier–Stokes (laminar flow) and unsteady Reynolds-averaged Navier–Stokes (URANS) (turbulent flow) equations. The approach based on the laminar flow model is shown to provide the best predictive capability. It is applied to analyzing the readings of pressure sensors installed remotely in the waveguide tubes attached to the hydrogen-fueled PDE and RDE. It is shown that the measurements of static pressure and pressure pulsations by remote pressure sensors do not correspond to the true mean and local instantaneous values of pressure in the combustors. However, the true values can be recovered based on the measurements and computational fluid dynamics (CFD) calculations of the operation process.
English learning anxiety and English learning demotivation in South Korean third-year high school students
Authors: Kim Tae-Young , Choi Eun-Young
Published: February 2023

Because of the high level of anxiety and academic pressure associated with the college entrance exam in South Korea, this study investigated the effects of English learning anxiety on English learning demotivation and academic achievement in third-year high school students. To determine the correlations of the effect of English learning anxiety on both components, 249 participants were selected from nine third-year student classes at an academic high school in Gyeonggi Province, South Korea, to complete questionnaires, the data from which were analysed using quantitative statistical methods. The regression analyses revealed that the English learning anxiety in the male and female students with top grades had positively and significantly affected their academic achievement. However, except for high-level male learners, demotivation was not found to have any effect on student achievement. The results suggested that it is important to design education-friendly measures to enhance third-year high school student motivation and alleviate any excessive anxiety.
Test-taking strategy use by Chinese young EFL learners in an authentic international standardized English test
Authors: Han Feifei
Published: February 2023

The current study examined language test-taking strategies used by Chinese young learners of English as a foreign language (EFLs) in an authentic international standardized English test–Cambridge Young Learners English Test: Flyers Test. It adopted a mixed-methods approach: the quantitative part was a survey administered to 138 participants, and the qualitative part consisted of think-aloud sessions and retrospective interviews with six participants (three were high-achievers and three were low-achievers). The quantitative results show that in general, children adopted metacognitive test-taking strategies more frequently than cognitive test-taking strategies irrespective of language skills; and the high-achievers used test-taking strategies more frequently than their low-achievers. The two-way interaction effects between levels of test performance ☓ strategy type and between language skills ☓ strategy type were also significant. The qualitative results demonstrate that the high-achievers not only used a broader range of cognitive strategies than low-achievers, they also used the same metacognitive strategies at an in-depth level and in a more sophisticated way than low-achievers. The results of the study suggest that expanding Chinese young EFL learners’ repertoire of test-taking strategies and modeling desirable ways of using strategies may help them improve their test-taking strategy use.
El uso del translanguaging y el enfoque CLIL en educación primaria
Authors: Couto-Cantero Pilar , Fraga-Castrillón Noemi
Published: February 2023

Este estudio de caso tiene como objetivo principal averiguar el modo en que se realizan las prácticas desde el enfoque CLIL y el uso del translanguaging en lo referente al aprendizaje de una lengua extranjera (inglés) en un centro plurilingüe de Educación Primaria seleccionado para tal efecto. Para cumplir estos objetivos se ha optado por un método cualitativo y se ha diseñado un cuestionario y una entrevista como instrumentos de investigación. Los datos se analizaron mediante una codificación de la información en categorías y, tras la discusión, se concluye que los resultados demuestran que tanto la práctica del enfoque CLIL como el uso del translanguaging en el colegio objeto de estudio corresponden con lo que los diferentes autores mencionados en la literatura proponen a pesar de que siempre se pueden presentar ciertos puntos de mejora.
Classroom-based conversation analytic research: theoretical and applied perspectives on pedagogy, Kunitz, S., Markee, N., Sert, O. (Eds.) (2021). Springer, Cham, Switzerland. 426 pages, ISBN: 978-3-030-52192-9.
Authors: Xu Jinfen , Yang Baoqi
Published: February 2023

Conversation analysis (CA) has drawn attention from researchers on classroom context because of its potential implications for language education (Sidnell, 2010). However, previous studies overemphasized the detailed microanalyses, failing to provide specific pedagogical guidelines for teachers. This volume, with pedagogical implications of CA in multi-context classrooms, teacher education and assessment, provides a timely guidance for language instruction.
A Research about Changes in Oral Productive Communication Strategies in English Mention Teaching Degree Students
Authors: Luque-Jiménez Irene
Published: February 2023

This research aims to provide information about changes that may occur on the strategies declared to solve oral production problems by future teachers of English as a foreign language in Primary Education according to Nakatani's Inventory of Oral Communication Strategies (2006). The participants are students of English Teaching, these belong to the University of Granada (UGR), the University of Malaga (UMA) and the María Inmaculada de Antequera (Málaga) Associated Teaching Center (CAMMIA). The data was taken in two stages or moments, at the beginning of the Mention of English and at the end of it. In this research, a descriptive study is carried out for the initial phase, since the number of volunteer participants was greater than in the final sample. For the final sample, the results were statistically analyzed and compared. Only in strategies number 3 and 5 some significant changes take place. There have also been changes in the other types of strategies, although no significant changes have been obtained. It could be concluded that perhaps a specific instruction during the Mention would have contributed to the greater differences between the use of this type of strategies between the moment the Mention began and the moment it ended.
Application of Graph Coloring on Nurse Work Scheduling at H. Adam Malik Hospital Medan Using the Tabu Search Algorithm
Authors: Ananda Rizky , Indra Zulfahmi , Nasution Hamidah
Published: February 2023

Complex problems that usually occur in every hospital, one of which is scheduling with so many aspects, for example: the number of nurses, the distribution of nurse shifts, time off or leave and others. With the manual method that is still used in compiling the nurse's work schedule, it makes it difficult for an irregular and regular schedule. In solving the scheduling problem, the graph coloring method can be used. This scheduling problem can be solved by graph coloring. One solution to solve the problem of concluding graphs in scheduling is the Tabu Search Algorithm. A method that works as an effective problem solving method in finding the best solution to a problem. A method is used to solve the problem by making a representation in the form of a graph where the nurse is a node and grouping nurses as an edge by implementing the graph coloring into the Tabu Search Algorithm.
IMPLEMENTATION OF THE DOUBLE EXPONENTIAL SMOOTHING (DES) METHOD TO FORECET THE CONSUMER PRICE INDEX (CPI) IN MEDAN CITY
Authors: Hutagalung Goklas , Nasution Hamidah
Published: February 2023

The Central Statistics Agency (BPS) as a non-ministerial government agency has the task of providing data needs for the government and the public obtained through censuses and surveys conducted by BPS itself and also from other government departments or agencies as secondary data.  The problem that occurs at BPS is   the field of inflation, one of which is in the field of the consumer price index, which experiences price fluctuations which have an impact on the economy. Forecasting is an important tool used for effective and efficient planning, therefore, forecasting is needed to predict various events that will occur in the future. One of the methods used for forecasting is the linear Double Exponential Smoothing (DES) method from Brown, this method basically uses past data which is smoothed by exponen- tially weighting the older observation values or newer values and the data used shows trend pattern. Trend is a smoothed estimate of the average growth at the end of the period. In this study, the best parameter α for forecasting the consumer price index in the city of Medan is α= 0,8 with a MAPE percentage of 0,0223. And the results of the consumer price index forecast in the city of Medan in 2022-2023 show an increase every month.
IMPLEMENTATION OF NORTH WEST CORNER METHOD AND MODIFIED DISTRIBUTION METHOD IN OPTIMIZING FISH DISTRIBUTION COSTS USING MATLAB PROGRAM
Authors: Sitanggang Eby Agusriani , Ahyaningsih Faiz
Published: February 2023

Calculating distribution costs using the transportation method seeks to solve the problem of goods sent from source to destination so that the most optimal amount of transportation costs will be obtained to maximize profits. CV. Horizon Sibolga Group is a company that provides raw fish for sale to fish processing consumers. The company is located at Gatot Subroto street Number. 108 Pondok Batu Sarudik, Central Tapanuli Regency, North Sumatra Province. In this study, the North West Corner method will be used to find an initial feasible solution, and the Modified Distribution method will be used as an optimization test. If the test results show an optimal solution, then the allocation has been optimal and can be said to have reached the most profitable value. These results were obtained using Matlab software. Before the calculation, the company incurs distribution costs for a year of Rp. 963,000,000. From the research results, the total cost obtained after using the North West Corner method as an initial feasible solution is Rp. 928,831,000, and after using the Modified Distribution method as an optimization test, the total distribution cost is Rp. 923,058,000. So that the method used can save costs of Rp. 39,942,000, with a percentage of 4.14%.

Keywords: Optimization, Transportation Problems, North West Corner, Modified Distribution, Matlab.
RELATIVE RISK ANALYSIS OF THE SPREAD OF COVID-19 VIRUS IN MEDAN CITY BY SPATIAL AND NON-SPATIAL APPROACHES
Authors: Audina Yurid , Sari Rina Filia , Widyasari Rina
Published: February 2023

The city of Medan is the city with the highest cases of COVID-19 virus among cities in North Sumatra. This study was conducted to analyze the relative risk level for the spread of the COVID-19 virus. Estimation of relative risk is a statistic in disease mapping that is used to determine the distribution of disease. Relative risk estimation can be estimated using a direct estimator model or Standardized Morbility ratio and a small area estimation model using Bayesian Conditional Autoregressive (CAR) with the Poisson-Gamma model. The Poisson-Gamma model is one of the models in estimating small areas in the form of count data which is suitable for use in disease mapping cases. This study aims to find the relative risk value as the basis for mapping the spread of the COVID-19 virus in the city of Medan using the Standardized Morbility Ratio and Bayesian Condition Autoregressive models. And look for the value of the Central Error Squared (KTG) / Mean Squared Error (MSE) as a comparison which model is more efficient in estimating this research. Condition Autoregressive models. And look for the value of the Central Error Squared (KTG) / Mean Squared Error (MSE) as a comparison which model is more efficient in estimating this research.
THE IMPACT OF FUNDAMENTAL ELEMENTS ON STOCK PRICES OF SUBSIDIARY PULP & PAPER MANUFACTURING FIRMS LISTED ON THE INDONESIA STOCK EXCHANGE
Authors: Fatimah Zahara , Lubis Arina Luthfini
Published: February 2023

Predicting stock prices is contained in the basic approach is fundamental and technical analysis which is needed by entrepreneurs who invest their capital, this analysis is to determine the company's financial performance and must continue to be carried out, to carry out this analysis we use the help of several financial ratios where several types of ratios Return on Assets, Debt to Equity Ratio, Return on Equity, and Book Value per Share are some examples. The authors applied a quantitative descriptive approach to companies listed on the Indonesia Stock Exchange in the Pulp & Paper sector for this study. According to the Correlation and Regression tables, all of the variables ROA, ROE, DER, and BVS have an effect on stock prices, but the stock session obtained on the variables ROA, ROE, and DER has a very significant effect on stock prices but has no significant effect on stock prices on the BVS variable. So in the long term the company must implement one of two policies, namely low solvency means using less debt than own capital and a low solvency policy will not cause high interest expenses to be borne by the company so that it will affect growth.
MODEL REGRESSION COX PROPORTIONAL HAZARD WITH BAYESIAN METHOD FOR SURVIVAL ANALYSIS OF COVID-19 PATIENT CASES AT RSUD Dr. PIRNGADI KOTA MEDAN
Authors: Anandara Aurelia , Nasution Hamidah , Husein Ismail
Published: February 2023

Survival analysis is a statistical procedure for analyzing data by observing the response variable in the form of event time data from the beginning of recording to the end of the event. Survival analysis is used in many fields of medicine. The cox proportional hazard model aims to look at the factors of the recovery rate on patient survival. In this study using Bayesian data with Lognormal distribution in Covid-19 patients at Dr. Pirngadi, Medan City. The predictor variables are Age, gender, employment status, and other diagnose. Based on the research, the cox proportional hazard model was obtained  with the influential variables based on the credible interval it is known that the age and genderare significant variables. Among the two variables that have the most influence is the age because it obtains a larger coefficient, namely
LITERATUR STUDY OF STUDENTS MATHEMATICAL PROBLEM SOLVING ABILITIES ON HIGHER ORDER THINKING SKILL QUESTIONS FROM VARIOUS LEARNING MODELS
Authors: Siska Elia , Fauzi Muhammad Amin
Published: February 2023

This study aims to determine the results of a literature study on students' mathematical problem solving abilities on higher order thinking skill (HOTS) questions from various learning models. Students' problem solving abilities in identifying elements that are known or needed in solving mathematical problems, formulating mathematical problems, selecting problem solving, and re-examining problem solving to then make solutions in other ways or develop student problem solving when students are faced with math problem. High Order Thinking Skills (HOTS) is a thinking process of students at a higher cognitive level that is developed from various cognitive concepts and methods and learning taxonomies such as problem solving methods, bloom taxonomies, and learning, teaching, and assessment taxonomies. Based on the results of the analysis of the results of the study, it was concluded that students' mathematical problem solving abilities could be improved by applying problem based learning and discovery learning models. And the learning model that is better used is the Problem Based Learning.
Religious Moderation in Islamic Groups in the History of the Basic Consesus of the Indonesian State
Authors: Hariyanto Didik , Islamy Athoillah
Published: February 2023

This research intends to identify the manifestations of religious moderation by Islamic groups in the history of the consesus of the basic formulation of the Indonesian state. This qualitative research uses a normative-historical approach. Various scientific literature on ideological struggles between Islamic and nationalist groups in the history of the basic formulation of the Indonesian state became the source of this research data.  Four indicators of religious moderation formulated by the Ministry of Religious Affairs of the Republic of Indonesia became analytical theories in this study, including national commitment, tolerance, anti-violence, and accommodating to local culture. Data collection through documentation. The results showed that there are various indicators of religious moderation by Islamic groups in the history of acceptance of the basic consesus of the Indonesian state. First, indicators of tolerance and anti-radicalism in respecting and accepting  the abolition of the 7 Words in the Jakarta Charter. Second, the indictor of national commitment in maintaining the integration of the nation and state. Third, indicators of accommodative indicators of local wisdom in upholding a culture of deliberation related to the plurality of socio-political life. The theoretical implications of this study show that it takes a paradigm and religious attitude of individual (group) Muslims that is inclusive, tolerant, symbiotic in the life of a multicultural society. The limitations of the research have not examined the pattern of understanding or religious attitudes of Islamic groups that do not want the consesus of Pancasila and the 1945 Constitution in the history of the basic formulation of the Indonesian state. This is urgent to be studied further
Assessing the New Model Fulfilling the Right to Education for Correctional Students
Authors: Kiki Darmawati Darma , Zainuddin Asriadi , Marwan Marwan , Arpin Arpin , Silambi Erni Dwita , Mardhati Mardhati
Published: February 2023

The future of the Indonesian nation is very dependent on the condition of today's children. Therefore, future attention to children is the main focus, especially for Correctional Students (ADP) who live in the Special Child Development Institution (LPKA). One of the things that is of concern to children who are behind bars is the right to obtain formal and informal education. The purpose of this study was to analyze and evaluate the implementation of the fulfillment of the right to education for correctional students and to design an ideal model of fulfilling the right to education for children in Class II LPKA Gorontalo. The type of research used in this research is empirical normative legal research. The research results show that the educational process for ADP at LPKA is carried out in accordance with the mandate of Law Number 22 of 2022 concerning Corrections where ADP can pursue formal or informal education. In the implementation of formal learning process activities, there are still obstacles in the form of learning processes carried out outside LPKA, so it is necessary to formulate a learning model that should be made like a child-friendly school within LPKA and supported by educators who are truly competent and experienced in educating children.
Rubber-Tree Leaf Diseases Mapping Using Close Range Remote Sensing Images
Authors:   Universiti Teknologi Malaysia, Rasib Abd Wahid , Abd Hamid Nurmi-Rohayu ,   Malaysian Rubber Board, Mohd Yaacob Muhammad Latifi ,   Universiti Teknologi Malaysia, Abd Ghani Zarawi ,   Malaysian Rubber Board, Idris Nurul Hawani ,   Universiti Teknologi Malaysia, Alvin L M S ,   Universiti Teknologi Malaysia, Hassan Muhammad Imzan ,   Universiti Teknologi Malaysia, M Idris Khairulnizam ,   Universiti Teknologi Malaysia, Dollah Rozilawati ,   Universiti Teknologi Malaysia, Mohd Salleh Anuar ,   Universiti Tun Hussein Onn Malaysia, Ahmad Mustaffa Anjang ,   Universiti Tun Hussein Onn Malaysia
Published: February 2023

Currently, close-range remote sensing method using drone-based platform which payload compact sensor has been used for monitoring and mapping in the agriculture sector at large area. Thus, this study is deployed drone with a compact sensor to identify the rubber tree leaf diseases based on two groups of a spectral wavelength which are visible (RGB: 0.4 μm – 0.7 μm) and near infrared (NIR: 0.7μm – 2.0 μm), respectively. Spectral obtained from drone-based platform will be validated using ground observation handheld spectroradiometer. Eight types of rubber tree clones leaf at three different conditions (healthy, unhealthy and severe) were randomly selected within the 9.4-hectare experimental rubber plot, Rubber Research Institute of Malaysia (RRIM), Kota Tinggi, Johor whereby consist RRIM 2000 series, RRIM 3000 series, and PB series, respectively. Based on the result, quantitative analysis shows that the f-value is smaller than Critical-one tail for healthy, unhealthy while for severe the f-value is larger than Critical-one tail. The f-value is 2.887 < 4.283 (healthy), 0.002 < 0.264 (unhealthy) and 1.008 > 0.0526, respectively. Thus, this can be concluded that spectral and estimate is equal at the 0.05 significant levels. While qualitative analysis shows that each rubber clone tree diseases can be distinguished at the near infrared band for healthy, unhealthy, and severe, respectively.
Earthquake Risk Assessment of Sabah, Malaysia Based on Geospatial Approach
Authors:   Politeknik Sultan Haji Ahmad Shah, Sauti Noor Suhaiza , Daud Mohd Effendi ,   Universiti Tun Hussein Onn Malaysia, Kaamin Masiri ,   Universiti Tun Hussein Onn Malaysia, Sahat Suhaila ,   Universiti Tun Hussein Onn Malaysia
Published: February 2023

Sabah is located in the northeast region of East Malaysia and recognized as the most active seismic area in Malaysia. The scalability and frequency of earthquakes are growing due to the existence of both local and distant ground motions from active faults, with more than 67 earthquake occurrences with light to moderate magnitude (Mw larger than 3.5)recorded since the 1900. On the other hand, the skewed socio-economic development process associated with the rapid population growth and changes in the family structure, inequality issues, and the lack of adaptation measures would intensify the vulnerability of the earthquakes. Key elements linked to socio-economic vulnerability need to be addressed in order to reduce the risk of earthquake. Based on previous studies, we identified vulnerabilities from a multi-dimensional perspective consisting of exposure, resilience and capacity across districts. Subsequently, a holistic indicator system with 18 variables was constructed to assess the potential earthquake vulnerability in Sabah, Malaysia. The accumulated data will present an earthquake vulnerability classification using the Geographical Information System (GIS) approach. Finally, the earthquake risk was derived by integrating the earthquake vulnerability map with earthquake hazard map proposed by the Department of Mineral and Geoscience (JMG) Malaysia. The results of the analysis revealed that the highest level of earthquake risk, which accounts for 15.5 %, were concentrated in the eastern part of the Sabah region; the high-risk areas account for 7.7 %; the moderate-risk areas account for 11.3 %; and the low to very low risk areas account for 65.4 %. Accordingly, it is expected that the derived earthquake vulnerability and risk map will allow the policymakers and response teams to improve the earthquake disaster mitigation and management in Sabah.
Dynamic Creep Performance of Hot Mix Asphalt Mixture Incorporating Fibre
Authors:   Universiti Tun Hussein Onn Malaysia, Taher M.N.M , Aman M.Y. ,   Universiti Tun Hussein Onn Malaysia, Nazir M.A.M ,   Universiti Tun Hussein Onn Malaysia, Bujang H. ,   Universiti Tun Hussein Onn Malaysia
Published: February 2023

Permanent deformation is one of the distress that develops gradually as the number of load applications increases and appears as longitudinal depressions in the wheel paths and small upheavals to the sides. For this reason, numerous studies conducted on modification asphalt binder or mixture by various fibre. This paper presents the evaluation of creep modulus and permanent deformation of modified asphalt mixture with fibres. In order to envisage the modified asphalt mixture, Forta-fi, Kenaf and PET was blended to estimate the creep properties and rut depth value at different loading pattern. Superpave mix design method was employed with NMAS 12.5mm to obtain the optimum bitumen content established at 4% air void. In the respect, bitumen 60/70 penetration grade with 0.5% of Forta-Fi, 0.1% Kenaf fibre and 0.5% PET by weight of asphalt mixture were prepared. Dynamic Creep Test was performed in accordance withthe EN 12697-25:2005 guidelines using the Universal Testing Machine (UTM). As the result, the minimum value of permanent deformation was found at 0.5% of PET. Based on these studies, adding a minimum percent of PET in the asphalt mixture shows a better resistance to rutting deformation and enable a better understanding of the properties in modified asphalt mixtures.
A Preliminary Study on Vibration Response of Profiled Steel Sheet Dry Board (PSSDB) System under Heel-drop Test
Authors:   Universiti Tun Hussein Onn Malaysia, Roslan Aina Syafawati , A Majid Masni ,   Universiti Tun Hussein Onn Malaysia, Jaini Z M ,   Universiti Tun Hussein Onn Malaysia, Ismail Mohd Hanif ,   Universiti Tun Hussein Onn Malaysia, Sutiman Nur Adidah ,   Universiti Tun Hussein Onn Malaysia
Published: February 2023

This paper aims to evaluate the vibration response of the profiled steel sheet dry board (PSSDB) composite system under heel-drop test. Three (3) specimens with dimensions of 840mm width and 2000mm length were prepared. The specimen consists of a sample without concrete infill (P45HL), foamed concrete as infill (P45FC), and normal concrete as infill (P45NC) material. The specimen was erected using profiled steel sheet (PSS), 1mm thickness, and connected to a dry board (DB), 16mm thickness using self-drilling screws at 200mm screw spacing along the longitudinal direction. A heel-drop test was conducted, and modal analysis was performed using MEscope software. The FRF measurement was carried out using accelerometers, and the time-domain measured responses were converted to FRF to acquire modal characteristics such as natural frequency and mode shape of the structures. The natural frequency of the first mode shape is 17.7Hz, 14.2Hz, and 4.5Hz respectively for specimen P45H, P45FC, and P45NC. It demonstrates that the natural frequency of the specimen without infill and foamed concrete as infill is more than the human comfort limit value of 8Hz, implying that P45HL and P45FC will be comfortable for building occupants.
"Development of a Pico-Hydro Generating System with SES-BMS for Domestic Use "
Authors:   Universiti Teknologi MARA, Azuddin Muhammad Aiman , Mat Jusoh Mohammad Azzeim ,   Universiti Teknologi MARA, Che Abdullah Sukarnur ,   Universiti Teknologi MARA, Mohamed Zulkifli ,   Universiti Teknologi MARA, Mohd Ramli Mohd Hanif ,   Universiti Teknologi MARA
Published: February 2023

Non-renewable resources decreased significantly over the past decade, whereasthe current renewable energy system is expensive and more focused on large-scale use. The goal of this project is to design a user-friendly pico-hydro system with a Smart Energy Storage Battery Management System (SES-BMS) to utilize the potential of domestic water flow while saving energy consumption and daily costs. The overall system is a combination between the standard pipeline, a pico-turbine, the SES-BMS, and a simple light source. The flow of water is utilized by converting kinetic energy into electrical energy. The design was performed by using the Engineering Design Process (EDP) and coding via Arduino microcontroller. The main outcome of this project is a proof of concept that shows the potential for domestic use of the pico-hydro system combined with the SES-BMS system. Compared to the previous mini-hydro design, the new system shows an increase in performance during the average flow rate in the domestic pipeline, generating an improved value of 68 mW of power during the flow rate of 0.075 x 10-3 m3/s. An optimal charging time of 10 hours is recommended to accommodate the 3.5-hour use of a 12W LED lamp, to maintain the stability and reliability of the system, especially the battery pack.
Utilising Constructed Wetlands From Water Hyacinth for Wastewater Treatment in Oxidation Ponds
Authors:   Universiti Teknologi MARA, Md Latip Siti Noor Hajjar , Damanhuri Siti Nur Aida ,   Indah Water Konsortium Sdn Bhd,, Ibrahim Nur Diana ,   Universiti Teknologi MARA, Chin Khor Bee ,   Indah Water Konsortium Sdn Bhd,, Nasruddin Mimi Fadzlin ,   Universiti Teknologi MARA
Published: February 2023

Constructed wetlands are engineered to duplicate the processes occurring innaturalwetlands. Themain purpose of the structure is to remove contaminants or pollutants from wastewater. Constructed wetland is a new, creative, cost-effective, and green technology compared to conventional treatment systems. Water hyacinth couldbe cultivated for wastewater treatment and utilised to aid the purification of either industrial wastewater or sewer water. Consequently, the present study was conducted to determine the effects of constructing wetlands with water hyacinth on the wastewater quality of an oxidation pond and the cultivation of water hyacinth as constructed wetlands in an oxidation pond. Floating cages containing water hyacinth plants were monitored for two phasesunder different wastewater parameters. The data were compared to the Malaysian prescribed Sewage and Industrial Effluent Discharge Standards. The water hyacinth constructed wetlands produced a positive impact and met the requirements for effluent discharge standards.
Development of Biodegradable Food Packaging Incorporated with Pigment of Rose and Red Cabbage
Authors:   Universiti Teknologi MARA, Maqsood-ul-Haque Suzihaque , Md Shariffuddin Nor Syazwani ,   Universiti Teknologi MARA
Published: February 2023

Food packaging is essential for maintaining the quality and safety of food. Excessive food packaging made of plastics could be harmful to the environment. Plastic food packaging takes a long period of time to biodegrade while most of them do not biodegrade and are harmful to the environment. To improve the properties of packaging and extend the shelf-life of packaged food, development of biodegradable food packaging is implemented by using natural and renewable resources for the main materials such as extracts from plants due to its ability to decompose and biodegrade in a short time. In this case, biodegradable polymers and films are needed to reduce the external influence of environment such as oxygen and moisture. In this paper, the usage of red cabbage and rose as pH indicator was introduced through extractions using solvents of ethanol and water. The production of film for packaging incorporates starch and chitosan solution and were compared with commercial packaging. Each of the samples or rose and red cabbage were used for the preparation of film by using hot press method. This paper will examine the results of chemical properties such as interaction in the mixture by using FTIR and biodegradability of the film, mechanical properties like tensile strength, and physical properties like pH, colour and the thickness of the film. Commercial packaging gave a better result in term of tensile strength and biodegradability. It also showed that rose is better than red cabbage in terms of preventing food spoilage. The FTIR results for all samples were quite similar as all the peaks fall into a single bond region.
The Transformation of Islamic Political Identity in The Countryside of Banyuwangi Through Osing Culture in 1970-2005
Authors: Putro Muhammad Agung Pramono , Setiawati Nur Aini
Published: February 2023

This research examines why local identity building was conducted in Osing village, Banyuwangi Regency, East Java, and how this identity was initiated and invested by actors who have power using Islamic political identity. To respond to these questions, this research used the historical method by utilizing primary and secondary sources, such as official archive in form of decrees, interview with historical actors, and various references such as books, journals, and newspapers. This research findings are the following: Osing’s identity was a deliberate blueprint and not a natural continuity. This construction involved cultural practitioners, journalists, artists, intellectuals, traditional figures, and national administrators. Osing’s identity construction, transformation, negotiation, and mobility are the site of the contention of various interest. The attempt of creating a sympathetic and caring reputation of Osing culture represented by almost all of Banyuwangi regent continued from the New Order era until the post-Reformation era, despite various paradigm shifts. This needs to be interpreted as efforts to build identity and not just to eliminate the stigma attached. It has had an impact on political support and legitimacy in Banyuwangi, especially Osing Kemiren Village.
Masohi in the Christian and Islamic Villages of Siri Sori, Central Maluku, Post-Conflict
Authors: Saimima Johan Robert , Sinaga Rouli Retta Trifena , Islahuddin Islahuddin
Published: February 2023

This article aims to explain the role of masohi in maintaining relations between the Christian and Muslim communities in the Christian and Islamic villages of Siri Sori, Central Maluku, that witnessed the communal religious conflict in the period of 1999-2004. Post-conflict social relation has the potential for establishing harmony, which is particularly important given the conflict’s tragic impact and complex social implications. This can be achieved through masohi, which embodies local wisdom. Masohi can contribute to peace and conflict resolution between the two communities. The research question in this study is whether masohi can adequately serve as a solution in that context. This research uses a qualitative approach using observation, literature study, and interviews with Christian and Muslim figures from the two communities who have practiced masohi in the Christian and Islamic villages of Siri Sori. All the data about masohi is collected, sorted, analyzed, and reconstructed using culturally-based historical awareness perspective. The results of this study show that: (1) masohi manifests in interfaith cooperation between the two communities in their history culture; (2) masohi has a constructive humanitarian characteristic; and (3) masohi can be preserved to ensure the welfare of the people and to preserve peace sustainably.
An Exploration of the Experiences of Substitute Teachers: A Systematic Review
Authors: Reupert Andrea , Sullivan Anna , Tippett Neil , White Simone , Woodcock Stuart , Chen Lingling , Simons Michele
Published: February 2023

This article reports on a systematic review of literature on the experiences of substitute teachers, also known as casual or relief teachers. This occupational group are an essential part of school improvement efforts, allowing release time for other teachers to participate in professional learning, complete administrative duties, and attend to personal matters. Although a ubiquitous component of the teaching workforce, little is known about their work conditions, motivations, experiences, and support. This study involved a mixed-methods research synthesis approach. Peer-reviewed studies and dissertations that examined the experiences and needs of substitute teachers in primary/elementary, middle, and secondary/high schools were examined. The study found that, although substitute teachers are a heterogeneous group, their conditions and experiences are less than satisfactory, exacerbated by a lack of targeted support. Education systems need to consider professionalizing this occupational group further. In addition, systems need to develop policies and practices that improve substitute teachers’ work.
Una derecha democrática es más rara que un japonés con rastas, aunque el problema es otro
Authors: Ansaldi Waldo
Published: February 2023

El notable avance las fuerzas de derecha e incluso de la extrema derecha en buena parte del mundo occidental ha generado, en el campo de las ciencias sociales, una ya vasta literatura y no pocas controversias. Una dlas cuestiones que suele provocar diferencias es la existencia o inexistencia de derechas democráticas. Este artículo continúa la reflexión, ya considerada en otros previos, que pone en duda que, dentro de ese campo, predominen las que lo son. Al mismo tiempo, el corrimiento hacia el extremo no significa necesariamente que sean nazis o fascistas.
Las derechas latinoamericanas en el Siglo XXI y su novedoso vínculo con las élite económicas. Los casos de Horacio Cartes (2013) y Mauricio Macri (2015)
Authors: Nikolajczuk Monica
Published: February 2023

El presente artículo tiene como objetivo indagar, desde la perspectiva de la Sociología Histórica y la metodología comparada, en el particular vínculo entre derechas y élite económica en el Poder Ejecutivo a través de los fenómenos de presidentes-empresarios y puerta giratoria. Sostenemos que ha existido un cambio cuantitativo y cualitativo tras el inicio del denominado cambio de época y particularmente, luego de la crisis global de 2008, mutando en un tipo de vinculación generalizada, persistente y consolidada en el ámbito institucional partidario. A partir de allí podemos observar el creciente protagonismo del empresariado frente a otros sectores sociales en los partidos derechistas. Este fenómeno se evidenció en diversos países de la región a través de la circulación de las trayectorias desde el ámbito privado empresarial al ámbito público, particularmente en la titularidad del Poder Ejecutivo y su cartera ministerial. Reconstruiremos este proceso a nivel regional (Perú, Chile, Ecua- dor y Brasil) y puntualmente las experiencias de Mauricio Macri en Argentina (2015) y de Horacio Cartes en Paraguay (2013).
Los usos del republicanismo en la relectura de la democracia. Estudio del discurso político de la Argentina actual
Authors: Velisone Julia
Published: February 2023

Las últimas décadas han estado marcadas por el ascenso de sectores de derechas a gobiernos democráticos, en paralelo a la crisis de legitimidad y representación de dicho sistema. En la Argentina, tales procesos se articulan con la creciente utilización del republi- canismo en el discurso político, así como su significación en relación con la democracia. Partiendo de dicho escenario, el presente trabajo indaga en los usos y sentidos del republicanismo y su relectura de la democracia en el discurso político de la Argentina ac- tual. Para ello, estudia las notas de los diarios La Nación y Clarín en el año 2019 en don- de se utilizan los términos republicano/re- publicanismo, entendiendo su relevancia a partir de la mediatización de la política y el aumento del uso de tales conceptos en el debate público, en particular, en un contex- to electoral en el que tales disputas discursivas se ven potenciadas. A partir de lo ante- rior, el trabajo presenta las redefiniciones de la democracia y la vinculación del republicanismo frente a sus falencias, así como los usos políticos de dichas significaciones, desde las construcciones discursivas de sectores vinculados a las derechas.
Recordar los 90. Conmemoración y promoción del olvido del menemismo en el discurso entimemático reciente
Authors: Sánchez Pablo
Published: February 2023

A partir de una perspectiva socio-semiótica se propone en este trabajo el análisis de un corpus de discursos mediáticos y políticos en torno a la figura de Carlos Menem y la Argentina de la década del noventa. Siguiendo la premisa angenotiana de buscar en la producción social de sentido aquello que atraviesa a todos los discursos de un estado de sociedad particular, comparamos textos de carácter entimemático de una revista cul- tural de circulación digital y algunas declaraciones de líderes de agrupaciones partidarias de derecha para proponer que en la doxa sobre el pasado reciente argentino está configurada por una hegemonía discursiva don- de se tematiza al menemismo como un pro- yecto de reconciliación de la sociedad de su momento. Por otro lado, argumentamos que sería factible vincular la emergencia de figuras de la nueva derecha argentina a un lento, parcial pero patente proceso de reha- bilitación social del menemismo en el debate público contemporáneo. Este desplazamiento de las fronteras de lo decible y lo aceptable, sostendremos, permite postular componentes programáticos inspirados en el neoliberalismo de los años noventa como deseables para la situación del presente.
Fauna silvestre y edificios. Guía técnica para conservar y fomentar la biodiversidad en obra nueva y rehabilitación
Authors:   SEO/BirdLife
Published: February 2023

Cuando se habla de sostenibilidad en edificios, en general se piensa en cuestiones como el consumo de materiales y energía, emisiones de CO2, generación de residuos…, pero rara vez en la biodiversidad. Sin embargo, muchos edificios e infraestructuras creadas por el ser humano albergan una rica y variada fauna y flora, debido a que ofrecen alternativas a la degradación y desaparición de sus lugares naturales de refugio y nidificación. Algunas especies incluso han llegado a ser totalmente dependientes de estas estructuras artificiales para su supervivencia.