bluuebunny/crossref_metadata_2025 huggingface dataset:
The effect of Covid-19 epidemic on the industry of a Sub-Saharan Country: a perspective on sports industry in Nigeria
Authors: Gambo Adamu Umar , Balatoni Ildikó
Published: August 2022

Kutatásunk során a Covid-19 járvány Nigéria gazdaságára és sportiparára kifejtett hatását elemeztük, a kapcsolódó szakirodalom áttekintésével. Megvizsgáltuk a sportgazdaság Covid-19 járvány alatti helyzetét Európában és az Egyesült Államokban, majd kiemeltük a nigériai speciális viszonyokat. Bár a sportgazdaság nigériai vonatkozásában kevés szakirodalom áll rendelkezésre, több mint 60 tudományos közlemény elemzésére került sor. Ezek alapján megállapításra került, hogy a Covid-19 járvány nemcsak a globális, de a nigériai gazdaságot is negatívan érintette. Ez különösen jelentős volt a sporthoz kapcsolódó direkt és indirektfoglalkoztatás területén, tekintettel a nigériai gazdaság egy-szektorú jellegére. Vizsgálataik alapján szerzők javaslatként fogalmazzák meg, hogy figyelembe véve a nigériai társadalom korfáját, jelentős befektetések lennének szükségesek a sportiparba, mely a szektor átalakításával is együtt kellene, hogy járjon.
Az önkéntesség karrierépítő szerepe a felsőoktatásban
Authors: Fényes Hajnalka , Mohácsi Márta
Published: August 2022

Nowadays the motives for volunteering are changing among higher education students, andbesides traditional altruistic motives, career-building motives also appear (the acquisitionof work experience and professional knowledge, professional development, networking,the presentation of voluntary work in the resume). In this paper, we use data from a surveyconducted in five Central and Eastern European countries (N=2,199) to examine through linearregression analysis the factors affecting the strength of career-building motives and to analysethrough a logistic regression model the determinants of whether or not volunteering is related to the field of study. Our hypotheses are formulated based on the literature. Our results showthat career-building motives are more pronounced among women and students who have aclose relationship with external friends outside the university, study outside Hungary, and studysomething other than engineering, computer science or science. Voluntary work is more likely tobe related to the field of study among teacher education students, students with an unfavourablefinancial situation, those who study in Romania, and those who have a close relationship withfaculty.
System of Professional Skills in Training Managers
Authors: Istomina Anna , Vinogradova Marina , Lukyanova Anna , Bozhko Lesya , Prodanova Natalia
Published: August 2022

The central aim was to investigate the transformation of employment in the digital economy at the country (on the example of the Russian Federation) and global levels and elaborate a universal list of competencies that a modern manager should possess in the context of such a transformation. As part of the study, quantitative, descriptive, and graphical analysis methods were used to examine quantitative indicators reflecting the transformation of the labor market in Russia and the world for the period from 2009 to 2019. The investigation results indicate that the Russian Federation’s labor market is experiencing a remarkable shift these days.
Factors Influencing Hackathon Adoption for Learning Information Technology (IT) Programming Modules
Authors: Oyetade Kayode Emmanuel , Zuva Tranos , Harmse Anneke Harmse
Published: August 2022

Hackathon as a social event has been identified as a method that assists participants collaborate and solve technical design challenges in a limited time. With the numerous hackathon potentials, its significance in computer and IT programming courses have not been fully explored for teaching and learning. The hackathon concept has been in existence for some times, and research on the adoption of hackathon has been limited to the industry but not much in education. This paper endeavours to investigate the factors that influence hackathon adoption in the academic sector particularly in higher education. Quantitative research was undertaken; a survey was administered to a sample of 249 South African IT programming students.
Optimization of Sorting Processes of Partially Rotten Mango for Food Processing with Image Processing
Authors: Nuanmeesri Sumitra , Tangcharoenbumrungsuk Kamonwan , Poomhiran Lap
Published: August 2022

This research aims to develop a method for improving the process of separating partially rotten fruit of ripe mango to the process of creating new creative Mango Stir-Fry. The partial rotten approximation process was based on image processing using Gaussian Mixture Model, HSV color model, dilation, erosion, Otsu’s binarization thresholding, and image color proportions techniques for mobile application development. The results showed that the techniques presented in this study could sort and approximate partially rotten mangoes with an accuracy of 99.06%. Moreover, the developed mobile application can approximate the net weight of ripe mango pulp and the net weight of Mango Stir-Fry to be obtained. These approximation errors were 0.68% and 1.91% for the net weight of net ripe mango pulp and Mango Stir-Fry, respectively. Therefore, this work helps the cooking process to classify partially rotten ripe mangoes and estimate the volume of processed products more conveniently.
Using the Kinetic Magic Cursor in Education to Predict the Behavioral Intention in Using Technology
Authors: Latief Suryawahyuni , Suprapto Nadi , Simorangkir Lucy , Hendrayani Santi , Rahmah Rahmah
Published: August 2022

A Unified Theory of Acceptance and Use of Technology (UTAUT) is a theory to measure how far users accept technology. This paper presents Venkatesh’s theoretical framework and Unified Theory of Acceptance and Use of Technology (UTAUT2), which UTAUT extended. UTAUT2 was used to assess the user’s acceptance of the Kinetic Magic Cursor (KMC). UTAUT’s theoretical framework has eight dimensions to predict behavioral intention in using technology. These dimensions of the UTAUT2 consist of performance expectation, social influence, hedonic motivation, effort expectancy, facilitating condition, habit, price value, and behavioral intentions. This study aimed to analyze the UTAUT2 by the genders among undergraduate students in Taiwan. UTAUT2 was used as a theoretical framework and Analytic Hierarchy Process (AHP) with expert choice 11.5 to analyze the data. The study found no significant difference between female and male students in using technology. The validity of structure for male and female student performance in KMC has a slightly similar percentage in the effort expectancy and behavioral intentions; males were 17.7% and 13.1%, and females were 17.6% and 13.4%, respectively.
Verdade e hegemonia nas estratégias jornalísticas de combate à desinformação
Authors: Lelo Thales Vilela
Published: August 2022

O artigo examina a pauta de enfrentamento à desinformação proposta pela grande imprensa e pelas agências de fact-checking. Por meio da análise crítica dos discursos institucionais destas iniciativas, argumenta que eles promovem a despolitização do dissenso democrático apelando a uma concepção autoritária da verdade, dicotomizando fatos e valores e ratificando acriticamente as instituições hegemônicas. Em contraponto a esta formação discursiva, o artigo reivindica uma abordagem pluralista da verdade apta a reconhecer valores normativos discrepantes nas disputas sociais em curso nas democracias Ocidentais. Sugere-se, por fim, que as medidas elaboradas para aprimorar as competências críticas dos cidadãos deveriam endereçar as axiologias conflitantes presentes nas peças de desinformação e fomentar uma leitura crítica das práticas jornalísticas.
THE POTENTIAL OF LESSON STUDY AND SELF-EFFICACY TO ENHANCE TEACHER PROFESSIONAL DEVELOPMENT: a systematic literature review
Authors: Fluminhan Carmem Silvia Lima , Marques Ana Paula Ambrósio Zanelato , Schlünzen Junior Klaus
Published: August 2022

Empirical evidence suggests that collaborative contexts have an impact on teacher self-efficacy. Lesson Study (LS), known as a professional development model that fosters collaboration and inquiry-based features, could foster a positive effect on self-efficacy. However, our knowledge about how these conceptual frameworks correlate is limited. In order to shed light on the theme, a systematic literature review was conducted to investigate the relationship between LS and self-efficacy to improve teaching and learning. Four international databases were consulted (Web of Science, SCOPUS, ERIC and SciELO), and a total of eight studies met the inclusion criteria. The search was conducted in April, 2022 using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement checklist. The identified studies were qualitatively synthesized. The results provided striking evidence that LS has the potential to foster collaboration, improved teacher content knowledge, enhance outcome expectancies and increase teachers´ self-efficacy, which, in turn, is a predictor of student academic achievement. On the other hand, it was revealed that lack of time and resources may contribute to insufficient outcome. Few studies were retrieved through the search engine. Finally, suggestions were proposed for future research.
Effect of Macroeconomic Factors on the Construction Sector Sharia Stock Price Index for the 2019-2021 Period
Authors: Pebriani Selfi , Suselo Dedi
Published: August 2022

This study aims to examine the effect of macroeconomics, namely the effect of Exchange Rate, Inflation, BI-7 Day Repo Rate, and Gold Price on the Construction Sector Stock Price Index listed on the Jakarta Islamic Index for the 2019-2021 period during the Covid-19 pandemic. The population used in this study are all those who are included in the building construction sector.  The sample in this study is one of the construction companies listed in the Jakarta Islamic Index. The method of analysis in this study uses multiple linear regression analysis. The data collection technique in this research is purposive sampling. Purposive sampling is a technique in determining the research sample by using various considerations or based on the objectives of the researcher. The results of this study indicate that partially and simultaneously Exchange Rate Variable, Inflation, Interest Rate BI-7 Day Repo Rate, and Gold Price have a significant effect on the Construction Sector Stock Price Index. Variables Exchange Rate, Inflation, BI-7 Day Repo Rate, and Gold Price have a significant influence on the dependent variable, namely the Stock Price Index. It can be proven that all independent variables jointly have a significant effect, it can be proven.
Food Sufficiency, Tariffication Policy, and Business Strategy: A New Business Model for the Rice Milling Industry in the Philippines
Authors: Alvarez Sarah Calma , Jacoba Feliciana , Antonio Olive Chester Cuya , Gabriel Arneil Garcia , Herezo Macky Ciriaco
Published: August 2022

Rice is a primary commodity in the Philippines and a staple food for Filipino families. Climate change, low yield, and decreasing number of Filipinos engaged in agriculture lead to the instability in the supply of rice and fluctuation in market price affecting local farmers, rice millers, and consumers. In an attempt to address rice shortage and lower retail prices, Republic Act No. 11203 or Rice Tariffication Law was promulgated. Given the contribution of Nueva Ecija province in the rice economy of the country, it is vital to analyze the impact of the policy in the province, specifically, on the operations of 82 registered rice millers using descriptive method of research. Results indicate that the rice millers observe the traditional practices in trading milled rice. Most of them are not engaged in importation and are facing challenges related to the sudden policy reform. From the findings of the study, a new business model is recommended to help rice millers increase the scope of their operations and acquire necessary funding from banking institutions. The new model is seen to help the rice millers gain income from different ventures, allowing them to expand, grow and help the economy in the long run. Thus, raising sustainable investments in the rice industry in the province and in the Philippines.
Synbiotic microcapsule dietary supplementation for prevention against co-infection diseases in Pacific white shrimp: a limited field experiment
Authors: Munti Yuhana  , Tambun Andreas , Widanarni Widanarni , Afiff Usamah
Published: August 2022

This study aimed to evaluate the effectivity of microencapsulated synbiotic (MS), Bacillus sp. NP5 and mannan oligosaccharide (MOS) dietary in different feeding frequencies in Pacific white shrimp culture field experiment. The MS was administered as a feed supplementation to enhance the immunity for prevention against co-infection with WSSV (White Spot Syndrome Virus) and Vibrio harveyi. The synbiotic was microencapsulated by the spray dryer method. Shrimps were reared in the floating net cages in the pond. Treatments included the administration of MS at different frequencies i.e, daily (A), twice a week (B), once a week (C), and without MS supplementation (consisted of negative and positive controls) with a feeding rate of 6% of shrimp biomass (5 times a day). During the challenge trial, shrimps were removed and further reared in plastic tanks, for 7 days. The shrimps (except negative control treatment) were intramuscularly injected by WSSV filtrate at the infective dosage of 10-4 copies.ml-1. Twenty four hours after WSSV injection the shrimps were immersed in the water-containing cells suspension of V. harveyi at the cell’s population dosage of 106 CFU.ml-1. Immune responses were observed for 7 days after experimental infection. The shrimps that have been treated with daily MS supplementation (A) showed better immune responses i.e., total haemocyte counts, phenoloxidase, respiratory burst, and the lower pathogenic cells abundance in the intestine compared to other treatments groups.
Sound Diversity as Representation to the Behavior of Spiny Lobster Panulirus homarus (Linnaeus, 1758)
Authors: Hartoyo Hartoyo , Amron Amron , Fitri Aristi Dian Purnama , Darmanto YS
Published: August 2022

Highlight Research

The sound of d spiny  lobster (Panulirus homarus) was identified, named rasp; slow rattle; and popping sound
The sound characteristics of  spiny  lobster (Panulirus homarus) represent its behavior
Passive acoustic and visual record method combination was implemented to analyze the relation between sounds and behavior of  spiny  lobster (Panulirus homarus)

 
Abstract
Spiny lobster Panulirus homarus is one of many important economic fishery resources in Indonesia. Continuous exploitation activities in the natural habitat can potentially disturb the sustainability of lobster resources. This species is known to produce sound with certain characteristics and highly dependent on environmental changes. This study aimed to investigate the characteristics of sound as a representation of behaviour. The sound produced by P. homarus was recorded for 24 hours using a hydrophone (a passive acoustic technique). The hydrophone converts the sound wave produced by the lobsters into electric voltage in millivolts, then were converted to a digital number, in order to be saved in a virtual format with the *.wav extension. The video system captured data on behaviors of resting, territoriality, aggression, and social attitudes. The results showed that P. homarus emitted rasp, slow rattle, and popping type of sound, with certain characteristics. All sounds types were characterized by a broadband frequency (4 - 20 kHz), and a source level ranging from 125 - 145 dB re 1 µPa. Rasp sound consisting of 12 - 40 pulses with a sound duration of 100 - 400 ms, represents a defensive behavior. Slow rattle sound with 2 - 7 pulses did not represent a specific behaviour and it is dominant during the night. However, the popping sound with only one pulse represented feeding behavior.
Effects of Different Acetic Acid Immersion Time on the Properties of Collagen from Pangasius Skin
Authors: Kusumawinahyu Clara Amelia , Abidin Sharilla Aryananti , Patmawati  , Pudjiastuti Dwi Yuli , Nirmala Dwitha , Alamsjah Mochammad Amin , Sulmartiwi Laksmi , Manikam Raseetha Vani Siva
Published: August 2022

Highlight Research

Experimental use of pre-treated pangasius skin as collagen raw material using different acetic acid immersion time
Effects of immersion time on the yield of collagen from pangasius skin
Effects of immersion time on the proximate content of collagen from pangasius skin
Presenting SDS-Page profile of collagen from pangasius skin

 
Abstract
Pangasius sp. production in Indonesia has reached 384,310 tons in 2019. One of the main waste in pangasius fillet industry is the skin, which reached to 6% of body mass. Fish skins are alternative for making collagen because it has no restrictions for certain religions and ethnicities. Collagen is a protein biomaterial which acts as the main component of connective tissue. Extracting collagen using organic acids such as acetic acid is the most common extraction method. Herein, we report the effects of different immersion time of acetic acid to collagen properties from pangasius skin. In this study, pangasius skin was treated using 10% alcohol with the ratio 1:10 (w/v) for defatting and 0.1M NaOH with the ratio 1:10 (w/v) for eliminating non-collagenous protein. The immersion of 0.5M acetic acid was carried out on pangasius skin with the ratio of 1:20 (w/v), for 24, 48, and 72h at temperature less than 15oC. The sample was salted-out for 24 hours with NaCl until the concentration reached 2.5M, then the sample was freeze-dried at -40oC. This study investigated that longer immersion time affected the properties of pangasius skin collagen. Different immersion time significantly affected the yield of collagen from pangasius skin (p<0.05). Pangasius skin has a potential to be used as collagen raw material, and 72h of immersion time (P3) is suggested to produce pangasius skin collagen with the highest yield and protein content (6.15 % and 9.26 %). Production of collagen from the fish skin will contribute to increase pangasius waste valorization in pharmaceutical industry.
Record on Nematode Tanqua tiara Infection on Snakehead Fish Channa striata in South Kalimantan Indonesia
Authors: Murwantoko Murwantoko , Hayati Jamilah
Published: August 2022

Highlight Research

The parasitic disease has been record in snakehead fish (Channa striata) from South Kalimantan
The nematodes with needle shape on both tip end with approximately 1 mm length and moving inside of wall cysts were found in in abdomen cavity and flesh of fish
The morphology of the nematode was observed by light- and scanning electron-microscope
The analysis on 18S rRNA showed that this parasite is belonging to nematode Tanqua tiara

 
Abstract
Snakehead fish (Channa striata) is an important commodity in South Kalimantan Indonesia. The snakehead fish production was increased due to the capture and intensive culture. The disease is one of the obstacles for production that may happened in cultured- and wild-fishes. The aims of this study were to record and to identify parasite which infected on wild snakehead fish from Kandangan Lama, Panyipatan, Tanahlaut, South Kalimantan. The parasite identification was conducted based on the morphology and the molecular characters. The morphology was observed by light microscope and scanning electron microscope. The 18S rRNA of parasite was amplified using designed primers and followed by sequencing. Spherical cysts were found in abdomen cavity and flesh of snakehead fish. The cylindrical worm with needle shape on both tip end with approximately 1 mm length were moving inside of wall cysts. Alignment analysis of 18S rRNA showed the highest homology at 99.83% with Tanqua tiara. Phylogenic tree showed that this worm is located at distance clade with the nematodes that have been reported to infect snakehead fish. The morphology and molecular results verified that and first report the parasite found in snakehead fish in South Kalimantan was T. tiara species. This nematode parasite may be served as intermediate host.
Vibrio Dynamics and Health Status of Pacific White Shrimp Fed with Cinnamaldehyde-Containing Feed
Authors: Ramadhani Dian Eka , Hendriana Andri , Wahjuningrum Dinamella , Mulya Muhammad Arif
Published: August 2022

Highlight Research

Cinnamaldehyde for shrimp
Dynamics of Vibrio and the correlation with shrimp health status
Green and yellow Vibrio bacteria in water, intestine, and hepatopancreas of shrimp
Cinnamaldehyde decrease the number of green Vibrio bacteria

 
Abstract
Disease can cause shrimp mortality and high economic losses caused by Vibriosis group. One alternative is using cinnamaldehyde which function as an anti-microbial and inhibit the production of toxins released by microorganisms. This study aimed to evaluate the administration of cinnamaldehyde on the dynamics of Vibrio bacteria and the health status of Pacific white shrimp fed with cinnamaldehyde-containing feed. This study used a completely randomized design (CRD) consisted of 4 treatments and 3 replications consisting of treatment K, A, B, and C which mean feeding without cinnamaldehyde, feeding containing cinnamaldehyde dose of 0.05%, 0.1%, and 0.2% respectively. Parameters included total bacteria (green and yellow Vibrio) in water, intestine, and hepatopancreas, as well as immune responses parameters, including total hemocyte count (THC), respiratory burst (RB), and phenol-oxidase (PO). All data were tabulated in Microsoft Excel 2016 and all statistical analysis was conducted in the SPSS v.22.0 software with one-way ANOVA followed by Duncan Multiple Range Test (DMRT (P=0.05). The results showed that the administration of cinnamaldehyde influences the dynamics of Vibrio and health status of shrimp. At the beginning and at the end of cinnamaldehyde administration, green and yellow Vibrio bacteria are mostly found in water, intestine, and hepatopancreas. The administration of cinnamaldehyde to Pacific white shrimp can reduce the number of green Vibrio bacteria both in the intestine and hepatopancreas as shown in treatments C and B. Cinnamaldehyde also affected the higher percentage of yellow Vibrio bacteria in treatments C and B compared to control (K). The highest immune responses of THC and RB were produced in treatments A and C compared to K. The decrease of green Vibrio bacteria and increased colonization of yellow Vibrio bacteria were correlated with immune responses. The best treatment in this study is treatment C.
Morphoregression and Reproduction Aspect of Bonylip Barb (Osteochilus vitattus Valenciennes, 1842) in Tamblingan Lake, Bali Island
Authors: Parawangsa I Nyoman Yoga , Artha Gede Arya Kusuma , Tampubolon Prawira Atmaja Rintar Pandapotan
Published: August 2022

Highlight Research

Morphoregression and reproduction aspect of bonylip barb was analyzed
Fork length more accurately to estimate the body weight
Lm50 of bonylip barb in Tamblingan Lake was 116 mmTL
Growth pattern is isometric
Good reproduction aspect

 
Abstract
Bonylip barb (Osteochilus vitattus Valenciennes, 1842) is one of many native fish inhabiting Tamblingan Lake. The information about this species in Tamblingan Lake is rare which requires fulfilment in information gaps for the management of bonylip barb. The aims of this research were to find out the length-length relationship, length-weight relationship, length at first maturity, sex ratio, gonadal maturity stage, gonadosomatic index (GSI), fecundity, as well as spawning period and location in Tamblingan Lake. The fish sample was captured with experimental gillnet that was set in the afternoon and hauled in the next morning. Length and weight of every sample were taken. All samples were dissected to observe the sex and gonad. Fork length was the type of length with higher accuracy to estimate the body weight than the other length character. Growth pattern of this species was isometric. Lm50 of bonylip barb in Tamblingan Lake was 116 mmTL. Sex ratio of bonylip barb was imbalanced (1.00:0.82). Gonad maturity stage I-V was found during the research with GSI between 0.16-15.50 for male fish and 0.43-32.82 for female fish. The highest GSI was found in March, 15.50 for male fish and 32.73 for female fish. Mature fish were discovered in all stations in every month of sampling. The fecundity of bonylip barb ranged between 2,792-279,326 eggs. The length-length and the length-weight showed a strong relationship. The fish was isometric. Based on the growth pattern and the reproductive aspects, the population of bonylip barb in Tamblingan Lake was in good condition.
Design of Virtual Reality-Based Hippotherapy Simulator Exergaming Software and Its Controller for Rehabilitation of Children with Cerebral Palsy in Indonesia: An Engineering Concept
Authors: Satriawan Ardianto , Trusaji Wildan , Hasanuddin Muhammad Ogin , Rahadini Septia Susanti , Selekta Mayang Cendikia , Sungkar Ellyana
Published: August 2022

Horse riding therapy, also known as hippotherapy, is a popular treatment for children with cerebral palsy (CP). However, the need for trained therapists, massive land use, and expensive maintenance of the horse ranch makes hippotherapy not affordable or even available for most patients in Indonesia. This problem motivates us to consider mechanical horse riding simulator machines to replace actual horse hippotherapy. However, most patients are children and are easily bored when asked to do monotonous activities for an extended period. The room setting also does not give the patient visual inputs that usually help motivates the children in real-horse hippotherapy activities. To solve this problem, we designed an exercise game (exergaming) software which we named \textit{Sirkus Apel}, providing the patients with fun activities while doing the therapy. We also design an inertial sensor-based controller that lets the patients control the in-game horse by their back movements, which also benefits CP patients. To make the visual input enjoyable to the user while also considering the user's safety, we built a convex mirror-based dome virtual reality to provide an immersive 3-D experience. We then project the game content to the dome to provide an immersive experience to the patients making it as if they are riding a real horse inside the game.
Chronic Positive Mass Balance is the Actual Etiology of Obesity: A Living Review
Authors: Manninen Anssi
Published: August 2022

According to known laws of physics, chronic positive mass balance is the actual etiology of obesity, not positive energy balance. The relevant physical law in terms of body mass regulation is the Law of Conservation of Mass, not the Law of Conservation of Energy. A recently proposed mass balance model (MBM) describes the temporal evolution of body weight and body composition under a wide variety of feeding experiments, and it seems to provide a highly accurate description of the very best experimental human feeding data. By shifting to a mass balance paradigm of obesity, a deeper understanding of this disease may follow in the near future. The purpose of this living review is to present the core issues of the upcoming paradigm shift as well as some practical applications related to the topic.
Harnessing Nasal Immunity with Iga to Prevent Respiratory Infections
Authors: Joseph John
Published: August 2022

Nasal cavity is a primary checkpoint for the invasion of several respiratory pathogens. Numerous pathogens including SARS-CoV-2, S. pneumonia, S. aureus, etc., adhere to the nasal epithelium or mucus to invade and trigger an infection. IgA serves as the first line of defense against foreign antigens and pathogens. They exhibit cross-reactivity against a diverse variety of antigens through immune exclusion, which intercepts the invasion of pathogens through the mucosal lining. Advances in intranasal immunization technology underscore the elevated neutralizing IgA levels at local and distal mucosa in contrast to the parenteral vaccines. This review highlights the adjuvants that induce IgA class switching and the challenges of maintaining nominal IgA levels at the mucosal surface. Finally, the review features the paradigm-shifting of conventional immunization techniques to IgA-inducing vaccines to enhance protection against homologous and heterologous pathogens.
NeTrainSim: A Network Freight Train Simulator for Estimating Energy/Fuel Consumption
Authors: Aredah Ahmed , Fadhloun Karim , Rakha Hesham , List George
Published: August 2022

Although train simulation research is vast, most available network simulators do not track the instantaneous movements and interactions of multiple trains for the computation of energy/fuel consumption. In this paper, we introduce the NeTrainSim simulator for heavy long-haul freight trains on a network of multiple intersecting tracks. Trains are modeled as a series of moving mass points (each car/locomotive is modeled as a point mass) while ensuring safe following distances between them. The simulator considers the motion of the train as a whole and neglects the relative movements between the train cars/locomotives. Furthermore, the powers of the different locomotives are transferred to the first locomotive as such a simplification result in a reduced simulation time without impacting the accuracy of energy consumption estimates. While the different tractive forces are combined, the resistive forces are calculated at their corresponding locations. The output files of the simulator contain pertaining information to the train trajectories and the instantaneous energy consumption levels. A summary file is also provided with the total energy consumed for the full trip and the entire network of trains. Two case studies are conducted to demonstrate the performance of the simulator. The first case study validates the model by comparing the output of NeTrainSim to empirical trajectory data using a basic single-train network. The results confirm that the simulated trajectory is precise enough to estimate the electric energy consumption of the train. The second case study demonstrates the train-following model considering six trains following each other. The results showcase the model’s ability in relation to maintaining safe-following distances between successive trains. Finally, the NeTrainSim is demonstrated to be scalable with computational times of O(n) for less than 50 trains (n) and O(n2) for higher number of trains.
Russian entrepreneurship in the context of the economic crisis: tendencies, problems and prospects
Authors:   Belgorod State National Research University, Slinkova Olga , Slinkov Anatoliy ,   Belgorod State National Research University, Semchenko Irina ,   Belgorod State National Research University, Vishnevskaya Ekaterina ,   Belgorod State National Research University, Yasenok Svetlana ,   Belgorod State National Research University
Published: August 2022

The economic crisis that began in 2014 continues to have a negative impact on Russian entrepreneurship. The measures taken to overcome the consequences of the crisis do not give the desired results. The objective of the article is to analyze the main trends of entrepreneurship in Russia and identify areas of its activation to support sustainable economic growth and economic security. The article presents the authors’ approach to the definition of entrepreneurial activity. A number of indicators for assessing entrepreneurial activity are proposed. The basic tendencies of development of small and medium business of Russia during the crisis are revealed. Two key factors determining the level of entrepreneurial activity are assessed: the desire and willingness of people to engage in entrepreneurial activity and the availability of conditions for the creation and development of their own business in Russia. We also marked the features of motivation of Russians to start their own business. The key factors that have a negative impact on the development of Russian entrepreneurship and determine the direction of the application of the efforts of state and public institutions to activate it are formulated
The pentagon fraud theory perspective: understanding of motivation of executives to manipulate with the financial statements of a state-owned enterprise
Authors:   Alma Ata University Yogyakarta, Setiorini Kusumaningdiah Retno , Rahmawati  ,   Sebelas Maret University, Payamta  ,   Sebelas Maret University, Hartoko Sri ,   Sebelas Maret University
Published: August 2022

State-Owned Enterprises (SOEs) in Indonesia are important economic actors in the national economy. However, SOEs have problems with accountability and financial transparency. SOEs problems ultimately lead to high economic costs and reduce efficiency. This study aims to determine the practice of fraudulent financial statements in SOEs. The method used in this research is descriptive. Data was obtained using observation and documentation of the Garuda Indonesia Group company which is a major airline in Indonesia. In addition, data were obtained from the Indonesia Stock Exchange (IDX), which consists of 36 samples. This study analyzes the financial statements from 2010 to 2018 as an independent variable. The dependent variable is measured by the elements of the pentagon fraud theory (pressure, opportunity, rationalization, competence, and arrogance) to detect fraudulent financial statements. Data analysis uses Kernel regression parameters, namely R-squared, predictive sign, and standard error, to detect earnings management in the context of the Garuda Indonesia Group. The results show that all the elements of the pentagon fraud theory affect financial statements. The study results show that the pentagon theory of fraud can be relied upon to detect misreporting in financial statements of SOEs. Furthermore, the study results are expected to be considered by related parties to be better prepared when detecting financial statement fraud using the fraud pentagon theory model.
Developing Best Measurement and Reporting of Waqf Institutions: Socio-Economics and Governance Impact (Indonesia Case)
Authors: Aryani Dwi Nita , B Bunyamin , Mauludin Hanif , Masruki Rosnia , Hanefah Mustafa Mohd
Published: August 2022

This study aims to analyse the current practices of disclosure of financial and non-financial reports of waqf institutions in Indonesia; to identify the performance indicators concerning social economic and governance impact of waqf; to suggest the best reporting framework for waqf institutions in Indonesia. A qualitative method was employed to measure the content analysis of annual report. Data are collected by downloading annual reports of waqf institutions from their website. Twenty waqf boards of 201 registered waqf institutions as the sample of participants. The disclosure of performance reports were measured by counting 57 disclosure items. The results indicate that waqf boards in Indonesia do not have a guidance or list for reporting their activities; methods on how to assess waqf board performance and the impact of waqf on social-economic and governance. They did not comply with 57 disclosure items, and none of waqf board reported the impact of waqf on social-economic and less governance. The proposed guidance and measurement will give managerial implications and useful for waqf boards to make good reports, and assess the impact of waqf on social, economic, and improving its governance.
The Description of the Contemporary Islamic Movement as Kharijites: A Critical and Analytical Study
Authors: Obalowu Issah Abeebllah , Abdul Rahim Adibah Binti
Published: August 2022

This study aims at addressing the extent of proximity and relationship between the contemporary Islamic movements and the Kharijites. Many contemporary scholars, regardless of their motives and trends, describe modern Islamic movements as Kharijites, due to their advocacy for radical social and political reform in many of the Muslim countries. Therefore, there is a need for addressing the genuineness of this description, especially when it is generally attributed to the whole contemporary Islamic movements across the Muslim nations, as it is the case in the view of the Madkhalists. Indeed, the misplacement of this description on some Islamic movements opens the door of political oppression and leads to the justification of shedding the innocent blood and the persecution of the righteous Muslims, based on the political disagreement, as it is the case in many Arab and Muslim countries, i.e., Egypt. So, this study discusses the historical background of the contemporary Islamic movements and their relationship with the Kharijites in order to figure out the range of correspondence between the principles of Kharijites and contemporary Islamic movements. The qualitative method is being applied in the study by adopting a historical, inductive, and analytical approach. It reveals that the contemporary Islamic movements can be loosely categorized into two major groups, one of which cannot be described as the Kharijites in all perspectives, while the other one can be described as the Kharijites due to the tight closeness between their trends and ideologies and the principles of the Kharijites. Likewise, their unjustifiable and terrorist acts against innocent people permit the ascription of the name to such groups among the contemporary Islamic movements.
Legacy datums and changes in benchmark elevation through time at the Low Sill and Overbank Structures, Louisiana
Authors: Dunbar Joseph
Published: August 2022

Vertical datums used in the study area at the Low Sill and Overbank Structures in southern Louisiana have involved Memphis Datum, Mean Gulf Level, Mean Sea Level, Mean Sea Level Datum of 1929, National Geodetic Vertical Datum of 1929, and the North American Vertical Datum of 1988. The focus of this study was to examine historic benchmarks in the study area to determine the magnitude of elevation changes associated with the different legacy datums that have been used by the US Army Corps of Engineers. Comparison of elevation values across these legacy datums has involved examining historic hydrographic surveys, compiling a list of known benchmarks from these surveys, and comparing their elevation values against publications involving spirit-leveling surveys from the Lower Mississippi Valley and the National Geodetic Survey database for benchmarks. This study describes the history of legacy datums, floodplain geology, potential subsidence impacts affecting the benchmarks, methods for identification and tracking benchmarks, and the results obtained from this study.
Automated detection of austere entry landing zones : a “GRAIL Tools” validation assessment
Authors: Sinclair Samantha , Shoop Sally
Published: August 2022

The Geospatial Remote Assessment for Ingress Locations (GRAIL) Tools software is a geospatial product developed to locate austere entry landing zones (LZs) for military aircraft. Using spatial datasets like land classification and slope, along with predefined LZ geometry specifications, GRAIL Tools generates binary suitability filters that distinguish between suitable and unsuitable terrain. GRAIL Tools combines input suitability filters, searches for LZs at user‐defined orientations, and plots results. To refine GRAIL Tools, we: (a) verified software output; (b) conducted validation assessments using five unpaved LZ sites; and (c) assessed input dataset resolution on outcomes using 30 and 1‐m datasets. The software was verified and validated in California and the Baltics, and all five LZs were correctly identified in either the 30 or the 1‐m data. The 30‐m data provided numerous LZs for consideration, while the 1‐m data highlighted hazardous conditions undetected in the 30‐m data. Digital elevation model grid size affected results, as 1‐m data produced overestimated slope values. Resampling the data to 5 m resulted in more realistic slopes. Results indicate GRAIL Tools is an asset the military can use to rapidly assess terrain conditions.
Coreflooding Evaluation of Fiber-Assisted Recrosslinkable Preformed Particle Gel Using an Open Fracture Model
Authors: Zhao Shuda , Al Brahim Ali , Liu Junchen , Bai Baojun , Schuman Thomas
Published: August 2022

Recrosslinkable preformed particle gels (RPPGs) have been used to treat the problem of void space conduits (VSC) and repair the “short-circuited” waterflood in Alaska’s West Sak field. Field results showed a 23% increase in success rates over typical preformed particle gel (PPG) treatments. In this paper, we evaluated whether adding fiber into RPPGs can increase the RPPG plugging efficiency and thus further improve the success rate. We designed open fracture models to represent VSC and investigated the effect of swelling ratio (SR), fracture size, and fiber concentration on gel injection pressure, water breakthrough pressure, and permeability reduction. Results show that fiber can increase RPPG strength and delay its initial swelling rate, but an optimized fiber concentration exists. Beyond that, the fiber entangling problem can result in the recrosslinked bulk gel inhomogeneously and impact gel quality. The injection pressure of fiber-assisted RPPGs increased with the SR and fracture width. During post-injection water process, the breakthrough pressure and residual resistance factor increased when the RPPG SR and fracture width decreased. Fiber-assisted RPPGs can dramatically reduce the permeability of the fractured core up to 1.8×106 times. It is observed that the fiber-assisted RPPGs used in the experiment remain in a bulk form in the fracture when we open the fracture after water injection. Not only does the addition of fiber improve the plugging efficiency, but it also prevents particle precipitation along vertical fractures or conduits.
Verification of the geomagnetic field models using historical satellite measurements obtained in 1964 and 1970
Authors: Soloviev Anatoly , Peregoudov Dmitry
Published: August 2022

In 2019, the WDC for Solar-Terrestrial Physics in Moscow digitized the archive of observations of the Earth’s magnetic field carried out by the Soviet satellites Kosmos-49 (1964) and Kosmos-321 (1970). As a result, the scientific community for the first time obtained access to a unique digital data set, which was registered at the very beginning of the scientific space era. This article sets out three objectives. First, the quality of the obtained measurements is assessed by their comparison with the IGRF reference field model. Secondly, we assess the quality of the models, which at that time were derived from the data of these two satellites. Thirdly, we propose a new, improved model of the geomagnetic field secular variation based on the scalar measurements of the Kosmos-49 and Kosmos-321 satellites.
N-cadherin suppression enhances inner limiting membrane permeability for intravitreal cellular transplantation
Authors: Pelaez Daniel , Gallo Ryan , Dvoriantchikova Galina , Moeyersoms Acadia , Wang Hua , Moulin Chloe , Torres Zenith Acosta , Lang Steven , Ivanov Dmitry
Published: August 2022

The efficient migration, survival, and engraftment of transplanted cells are important initial steps toward effective cellular therapies for retinal degenerative diseases. The inner limiting membrane (ILM), which separates the retina from the vitreous cavity, is a major barrier for intravitreally transplanted cells. Focusing on the cellular components of the ILM, we found that the cell adhesion molecule N-cadherin (NCAD) at Müller glia (MG) endfeet helps maintain this barrier. To increase ILM cellular permeability, we modulated NCAD expression via two approaches: an inducible MG-specific knockout animal model and with intravitreal self-deliverable siRNA injections. We show that NCAD suppression enhances retinal migration of multiple cell types after intravitreal transplantation, including mouse MG, human induced pluripotent stem cell-derived retinal ganglion cells, and human dental pulp stem cells. Our study may contribute to the development of targeted approaches for recipient tissue modulation to improve cellular therapies for retinal disease.
A heuristic-based package-aware function scheduling approach for creating a trade-off between cold-start time and cost in FaaS computing environments
Authors: Ebrahimpour Hossein , Ashtiani Mehrdad , Bakhshi Fatemeh , Bakhtiariazad Ghazaleh
Published: August 2022

With the migration of the enterprise applications to micro-services and containers, cloud service providers, starting with Amazon in 2014, announced a new computational model called function-as-a-service. In these platforms, developers create a set of fine-grained functions with shorter execution times instead of developing coarse-grained software. In addition, the management of system resources and servers is entrusted to cloud service providers. This model has many benefits, such as reducing costs, improving resource utilization, and helping developers focus on the core logic of applications. But still faces many challenges such as balancing cost, balancing performance, programming models, using current dev tools, containers’ cold start problem, saving data in caches, security issues, privacy concerns, and scheduling challenges like execution time prediction. In this paper, we focus on scheduling and cold start problems. Compromise occurs when keeping warm operating environments which can reduce cold start times but increase costs. In this study, we propose a dynamic waiting time adjustment approach. We aim to create a trade-off by using four different types of decisions at runtime using a heuristic method and analyzing the function dependency graph, functions’ invocation frequency, and other environmental parameters. The proposed method shows a 32% improvement over the fixed-time method (i.e. the method used by Apache OpenWhisk). This comparison is made from the cumulative measurement viewpoint which is a combination of response time, turnaround time, cost, and utilization.
WITHDRAWN: Optimization of Bacterial Cellulose Production Using Jaggery Waste by Response Surface Method
Authors: Singh Mukesh Kumar , Singh Annika , Pandey Ashutosh
Published: August 2022

The biosynthesis of bacterial cellulose (BC) has included a variety of carbon sources, in which the agriculture waste materials have continuously targeted to reduce for sustainable development. Acetobactor xylinus 2526 strain was used to synthesize bacterial cellulose by using jaggery waste as a carbon source in a medium. This article reports the optimization of yield (g/l), crystallinity (%), moisture regains (%), and average pore size (µ) of bacterial cellulose pellicles in dynamic culture conditions. A three factor three level Box-Behnken design has been applied; the three parameters include incubation temperature, shaking rpm, and pH of nitrogen source. Modified media was developed by taking 20 g/L jaggery waste in place of glucose in slandered Hestrin Schramm (HS) media. The optimization of BC resulted in 11.76 g/l yields, 78.9 % crystallinity, 62.7% moisture regain, and 7.3µ average pore size were found optimum for BC production at of 29.23°C incubation temperature, 121.19 shaking rpm, and 5.65 pH of nitrogen source. The physical property of Bacterial cellulose was characterized by X-ray diffractometry, Digital moisture meter, Fourier transform infrared, and Scanning electron microscopy. This article conclude the effect of incubation temperature, shaking rpm, and pH of nitrogen source on bacterial cellulose yield as well as its property by using response surface methodology.