bluuebunny/crossref_metadata_2025 huggingface dataset:
Status gizi, densitas zat gizi, dan keragaman pangan anak balita selama pandemi COVID-19 di Kabupatan Bangli, Bali
Authors: Adhi Kadek Tresna , Widarini Ni Putu , Suariyani Ni Luh Putu , Suandana Iwan Abdi , Januraga Pande Putu
Published: January 2023

Nutritional status, nutrient density, and dietary diversity of children under five during the COVID-19 pandemic in Bangli Regency, BaliBackground: Stunting in children caused the lack of nutritionally balanced food intake in the first two years of life. During the COVID-19 pandemic, the fulfillment of balanced nutrition for children must still be considered to maintain body resistance to avoid COVID-19 infection.Objective: This study was conducted to find out the nutritional status of children and also the knowledge and attitudes of mothers regarding the practice of balanced nutrition based on local food in the COVID-19 pandemic situation. Methods: Cross-sectional study with 202 children aged 23-59 months located in Susut District, Bangli Regency, Bali Province. Data collection includes anthropometric measurements and food recall. Characteristics, knowledge, and attitudes of mothers were conducted by interview using a questionnaire. Results: The nutritional status of subjects showed that the average weight for height z-score (WHZ) was 0.29 ± 1.37, height for age z-score (HAZ) was 0.56 ± 2.38, and weight for age z-score (WAZ) which is -1.18 ± 2.03. The average density of energy intake in the adequate (1.66±0.456), as well as protein density (4.12±0.884 g/100 calories), vitamin B12 (0.225±0.457 mg/100 kcal), and vitamin A (71.7 ±104.6 mg/100 kcal). The majority (61.9%) of subjects consumed less than five food groups in the last 24 hours. The average knowledge of respondents is 69.5±15.3, which is 35.1% in well nutrition knowledge, while most respondent’s attitude has in the good category. Conclusions: Overall children are in normal nutritional status, but it is necessary to attention to the density of vitamins and minerals which are still low, and the lack of food diversity. Suggestion to increase education on balanced nutrition practices based on local food to mothers and families so that they can help grow and also maintain children's health during the COVID-19 pandemic.
BIRTH PREPAREDNESS AND COMPLICATION READINESS AMONG PREGNANT WOMEN ATTENDING A MATERNAL AND CHILD CARE HOSPITAL OF GOVERNMENT MEDICAL COLLEGE IN SOUTH KASHMIR, INDIA: A CROSS-SECTIONAL STUDY
Authors: SALROO FOUZIA NAZIR , NAZIR SYED TANZEELA , GADOO MOHSINA MUKHTAR
Published: January 2023

Background: Maternal death is an issue of great concern especially when these deaths can be prevented by appropriate management of the delays causing it. To prevent these delays, the Johns Hopkins Program for International Education in Gynecology and Obstetrics (JHPIEGO) has put forward the concept of Birth preparedness and complication readiness (BPCR). BPCR matrix comprises several core elements covering antenatal, intrapartum, postpartum, and neonatal care.
Objective: The objective of the study was to assess BPCR status and its associated factors among pregnant women attending an antenatal clinic in a rural tertiary care hospital.
Methods: A hospital-based cross-sectional study was conducted among 568 pregnant women attending antenatal clinic of Department of Obstetrics and Gynecology of GMC, Anantnag from October 2021 to March 2022. After giving informed consent, participants were interviewed regarding BPCR using a questionnaire adapted from the JHPIEGO.
Results: BPCR index in our study was 42.34%. Almost half of the pregnant women (49.8%) were “well prepared” and remaining half (50.2%) were “less prepared”. The association between level of preparedness was statistically significant with educational status of mother (p=0.017), primi parous (p=0.04), and multiple ANC visits (p=0.014).
Conclusion: Overall BPCR index was on the lower side with knowledge regarding various key danger signs, identification of a skilled health care provider and a health-care facility being very unsatisfactory.
DEVELOPMENT AND EVALUATION OF MUCOADHESIVE MICROSPHERES OF HYDROCORTISONE SODIUM SUCCINATE IN THE TREATMENT OF CHRONIC SINUSITIS
Authors: BANSAL RUCHI , KAUSHIK DINESH , JAIN SAROJ
Published: January 2023

Objective: In the world, chronic sinusitis is one of the most common illness disorders. However, no viable medication has been identified to fully cure it as of yet. Patients are necessitated to use sprays, inhalers, and other devices to treat chronic sinusitis in contrast to all of its dangerous symptoms. However, these dosage forms need for concurrent administration, which cause inconvenient in the long term. An effort has been made to create a controlled release dosage form to increase patient compliance.
Methods: Two polymers Chitosan and HPMC were used to create hydrocortisone sodium succinate microspheres through the orifice-ionic gelation process.
Result and Discussion: It had a yield of about 89.33±2.33% drug entrapment efficiency and 86.65±0.25% percentage yield. The evaluation results for formulation F6 were the best of all the formulations.
Conclusion: It concluded that the most effective and promising dosage form was microspheres made from the drug (hydrocortisone sodium succinate), sodium alginate, and HPMC in the ratio of 1:2:2.
EVALUATION OF HEPATOPROTECTIVE ACTIVITY OF DRACAENA TERNIFLORA ROXB. AGAINST ETHANOL INDUCED HEPATIC INJURY IN WISTAR ALBINO RATS
Authors: VASUDEVAN KAVITHA , KUMAR R SANIL , MC SABU
Published: January 2023

Objectives: The objectives of the study were to investigate hepatoprotective activity of ethanolic root extract of Dracaena terniflora Roxb. (DTR-E) in alcohol-induced hepatotoxicity in rats.
Methods: Hepatotoxicity was induced in albino Wistar rats by oral administration of 40% ethanol (2 mL/100 g body weight). DTR-E root extract was administered at a dose level of 100 mg/kg and 200 mg/kg orally for 21 days. On the 22nd day blood was taken by puncturing retro orbital plexus and used for the estimation of biochemical parameters such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), total bilirubin, creatinine, urea, triglycerides, total cholesterol, albumin, and total protein. Animals were sacrificed by cervical dislocation and liver was dissected out and histopathological analysis of liver and kidney was carried out.
Results: Obtained results revealed that administration of ethanol caused a significant increase in liver weight, plasma ALT, AST, ALP, bilirubin creatinine, urea, triglycerides,and total cholesterol compared to the control group, while total protein and albumin concentration are significantly declined which were effectively prevented by the DTR-E extract. The histopathological observations supported the biochemical evidence of hepatoprotection.
Conclusions: The findings suggest that DTR-E root extract protects the liver cell from ethanol induced liver damages due to its antioxidative effect on hepatocytes. The results of the present investigation indicated that roots of D. terniflora Roxb. possesses significant hepatoprotective activity.
Criar la sal
Authors: Miranda Perez Jose Maria
Published: January 2023

This article describes and analyses the daily work of salt workers from the aboriginal community of San Miguel de Colorados in northwest Argentina. It intends to explore how their extraction practices involve a continuous flow of relationships with a living space, manifested through the daily exchange of energy, attachments and substances. These exchanges have a dual effect on salt work: They prevent the diseases that some beings in the environment can cause when they feel threatened and promote mineral production by transferring strength and luck. In the area under study, salt extraction and other activities conducted in (and with) the landscape are organized according to local ontology, which affirms that all things on earth are living and interrelated. In resonance with other research on the Argentine Puna and the Andes, this article aims to present an ethnographic concept of production defined by the inseparability of issues of the cosmos from ethical and political controversies and economic and material needs from the world’s vital and affective processes.
Effects of College Life Adjustment and Academic Performance on Quality of Life among Nursing Students Experiencing a Pandemic
Authors:   Korean Association For Learner-Centered Curriculum And Instruction, Hong Sehoon
Published: January 2023

Objectives The purpose of this study was to identify the effects of college life adjustment (interpersonal relationship, major satisfaction, major excellence, active coping, job preparation, and academic fidelity) and academic performance on quality of life in nursing students experiencing a pandemic.
Methods A total of 127 nursing students participated in the study. Data were analyzed by descriptive analysis, t-test, one-way ANOVA, Pearson correlation coefficient and hierarchical multiple regression with the SPSS/WIN 25.0 program.
Results The mean scores for quality of life, interpersonal relationship, major satisfaction, major excellence, active coping, job preparation, academic fidelity, and academic performance were 6.56±2.53, 3.74±0.71, 3.61±0.73, 3.17±0.87, 3.86±0.85, 3.31±0.98, 4.03±0.78, and 2.92±1.09, respectively. The hierarchical multiple regression analysis demonstrated that subjective health status (β=-.34, p<.001), active coping (β=.28, p=.003), and academic performance (β=.24, p=.014) affected the quality of life of nursing students. These three variables explained 40.7% of the variance of quality of life, and the most influential factor was subjective health status.
Conclusions To improve quality of life among nursing students, educators should develop intervention programs to promote related factors.
The Effect of Learning Reality on Immersion, Interest, and Learning Satisfaction in Lifelong Education Using Metabus Platform
Authors:   Korean Association For Learner-Centered Curriculum And Instruction, Kim Young Ok , Mun Bok Hyun
Published: January 2023

Objectives This study aims to suggest strategies and implications for metabus education in lifelong education institutions.
Methods For this purpose, 114 lifelong learners who use the metabus platform in Chungcheongbuk-do were tested to measure learning presence, immersion, interest, and learning satisfaction. In the structural equation model, learning presence as exogenous variable, immersion, interest, and learning satisfaction as endogenous variable were selected, and SPSS 21 and Smart PLS 3.0 statistical program were used.
Results The results of this study are as follows: First, the design, background, and surrounding environment should be continuously provided to learners to choose a new environment of the metabus platform. Second, the interest of the class should be provided through the provision of credits to decorate the avatar through simple quizzes related to the class. Finally, it is necessary to increase the satisfaction of education by providing various benefits when developing metabus education programs and participating in education.
Conclusions The results of this study provide strategies and implications for education to metabus lifelong education officials.
The Effects of Play Beliefs and Teaching Creativity of Early Childhood Education Institution Teachers on Play Support Competency
Authors:   Korean Association For Learner-Centered Curriculum And Instruction, Park yun joung , Im hee soo
Published: January 2023

Objectives The purpose of this study was to examine the effects of play beliefs and teaching creativity of teachers at early childhood educational institutions on play support competency.
Methods The subjects of this study were 287 teachers at day care centers and kindergartens in Busan and Gyeongsangnam-do. The analysis method was Person's product-moment correlation using SPSS 23 program to examine the relationship between teacher's play belief, teaching creativity, and play support competency, and multiple regression analysis was conducted to verify the influence of teacher's play belief and teaching creativity on play support competency.
Results As a result of data analysis, first, there was a positive correlation between teachers' play beliefs, teaching creativity, and play support competency. Second, among the sub-variables of play support competency, teacher's teaching creativity showed higher explanatory power in internal motivation, play goal, play design, and play operation, and teacher's play belief showed higher explanatory power in teacher's emotion and attitude, play support improvement effort, knowledge, play environment creation, and infant evaluation.
Conclusions The results of this study are significant in that it reminded the importance of teachers' play beliefs, teaching creativity, and play support capabilities in order for play-based education and childcare courses to be well realized in early childhood education institutions, and that teachers' play beliefs and teaching creativity should be promoted in order to enhance teachers' play support capabilities.
The Influence of Social Support on the Life Satisfaction of Multicultural Students: The Dual Mediating Effect of Self-esteem and Bicultural Acceptance Attitude
Authors:   Korean Association For Learner-Centered Curriculum And Instruction, Jo Hyunji , Kim Choonkyung
Published: January 2023

Objectives The purpose of this study were to examine the influence of social support on the bicultural acceptance attitude of multicultural adolescents, and to confirm the dual mediating effect of self-esteem and bicultural acceptance attitude in the relationship between them.
Methods To this end, 2,246 people in the first year of the second MAPS were selected as the subjects of the study. A correlation analysis was conducted to examine the relationship between measurement variables using SPSS 23.0 and SPSS PROCESS macro 3.5, and the dual mediating effect of self-esteem and bicultural acceptance attitude was confirmed using PROCESS macro Model 6.
Results First, the significant mediating effect of self-esteem was verified in the relationship between social support and life satisfaction of multicultural adolescents. Second, the significant mediating effect of bicultural acceptance attitude was verified in the relationship between social support and life satisfaction of multicultural adolescents. Finally, in the relationship between social support and life satisfaction of multicultural adolescents, self-esteem and bicultural acceptance attitude showed significant dual mediating effect.
Conclusions This conclusion indicates that the study provides basic data for parents education or counseling programs to help multicultural students improve their life satisfaction by presenting evidence that social support, self-esteem, and bicultural attitude have an important effect on life satisfaction.
A Review on the Some Biological Activities of the Hydantoin Derivatives
Authors: Wadghane Somnath , Bhor Rohit , Shinde Ganesh , Kolhe Mahesh , Rathod Pooja
Published: January 2023

Hydantoin derivatives are commonly used anticonvulsants. In general, they are effective for partial-onset seizures and tonic-clonic seizures, but not for absence seizures. Phenytoin is the most important drug in this group, and other drugs, ethotoin, and mephenytoin, are also commonly used to treat epilepsy. Prodrugs such as derivatives have been created. Phenytoin is effective in some cases of trigeminal neuralgia and related neuralgia. Phenytoin is also used to treat arrhythmias. Hydantoins or glycolylureas are heterocyclic organic compounds with the formula CH2C(O)NHC(O)NH. It is a colorless solid formed by the reaction of glycolic acid and urea. It is an oxidized derivative of imidazolidine. In a more general sense, hydantoins can refer to groups and classes of compounds that share the same ring structure as their parent. For example, phenytoin (see below) has two phenyl groups substituted at the 5th carbon of the hydantoin molecule. Actual chemotherapy for epilepsy dates back to the 1850s when "inorganic bromides" were introduced. However, it is worth noting that around the 1920s, the therapeutic and beneficial use of 'phenobarbital' usheredin an era of meaningful treatment of epilepsy. Hydantoin ring chemistry is the synthesis of rings by various methods and their applications in the medical field. Previous descriptions of hydantoin-containing compounds have broad pharmacological and biological activities, including anticancer, anti-inflammatory, anti-immune, antimetabolite, antioxidant, antibacterial, CNS-related, anticonvulsant, antitussive, and cytoprotective activities.

Keywords: Hydantoin derivatives, anticonvulsants, partial-onset seizures and tonic-clonic seizures
RELEVANT HARDENING TECHNOLOGIES FOR TILLAGE MACHINES WORK TOOLS
Authors:   Federal Scientific Agroengineering Center VIM, DOBRIN DMITRIY
Published: January 2023

The use of modern tillage machines can significantly improve the productivity, quality and efficiency of tillage. A significant part of the work tools (more than 60 percent) loses their operability due to wear of the working surfaces, which leads to downtime and significant material costs. (Research purpose) The research purpose is analyzing the most used technologies for strengthening the work tool of agricultural machines in order to determine the occupied market share. (Materials and methods) The data were collected on the websites of companies that sell spare parts for agricultural machinery in order to analyze the technologies used to strengthen the work tools of agricultural machinery. The information was divided in three main categories of work tools: work tools for cultivation, work tools for plowing, work tools for disking. (Results and discussion) The article presents the histogram based on the analysis of the hardening technologies of work tools, showing the share of various technologies in the following areas: volumetric hardening; quenching with high-frequency currents of cutting edges; application of powder materials followed by melting with high-frequency currents; electric arc surfacing with carbide materials; without the use of hardening technologies; plasma hardening of cutting holes. (Conclusions) The analysis of the Russian market of work tools of tillage machines was carried out in order to assess the most relevant and in-demand hardening technologies. The article presents collected and processed data on the occupied market share as a percentage of certain types of hardening. A comparative analysis of the hardening methods of foreign and Russian manufacturers was given.
BUILDING OF ALLOYED SURFACE LAYER DURING ELECTRIC SPARK TREATMENT OF STEEL 35 BY THE RHENIUM
Authors:   Federal Scientific Agroengineering Center VIM, IVANOV VALERIY , GORDIENKO PAVEL ,   Institute of Chemistry of Far Eastern Branch of the Russian Academy of Sciences, KONEVTSOV LEONID ,   Khabarovsk Federal Research Center Institute of Materials Science of Far Eastern Branch of the Russian Academy of Sciences, PANIN EVGENIY ,   Far Eastern Geological Institute of the Far Eastern Branch of the Russian Academy of Sciences, KАRАBTSOV ALEKSANDR
Published: January 2023

He article presents the influence of the modes of electric spark placement of the alloyed layer on the surface of steel 35 during electric spark alloying using rhenium anode material. The use of this method allowed material scientists to develop a number of new technologies for creating protective alloyed layers of surfaces made of conductive materials with specified functional properties. (Research purpose) The research purpose is studying the effect of electric spark alloying modes during the layering of alloyed layers on steel 35 using rhenium anode material, to study the kinetics of the electro-mass transfer of the anode material to the surface depending on the energy in the pulse and its duration. (Materials and methods) Rhenium Re (99.99 percent) was used as the anode material, the cathode was steel 35. The next equipment was used: BIG-1, Elitron-22-AM with AG-2 unit, IMEIL installation; EVO-50 XVP S. ZEISS SEM, RigakuMiniFlex-II diffractometer (Japan), Cu-Ka radiation, ICDD database; scales VLO-200, VLR-220; micro hardness tester PMT-3M. The samples were cleaned in an ultrasonic bath. (Results and discussion) The data of the total change in the erosion of the anode, the gain of the cathode, the coefficient of electric mass transfer in various modes were obtained. The highest average mass transfer coefficient was observed with electric spark alloying with the highest energy values of 1.8 (62.2 percent) and 0.32 joules (37.4 percent) at the lowest frequencies of 20 and 80 hertz. The ratio of the values of energy and depth of the alloyed layer shows a tendency to decrease the depth with increasing energy and increase with increasing frequency. (Conclusions) The article describes the results of the study of the effect of the modes of electrospray alloying of 35 rhenium steel on the kinetics of mass transfer, elemental, phase composition.
A SCIENCE INTENSIVE SYSTEM FOR UTILIZATION OF AGRICULTURAL MACHINERY IN THE AIC OF RUSSIA
Authors:   Federal Scientific Agroengineering Center VIM, KATAEV YURIY , GERASIMOV VALERIY , TISHANINOV IGOR , MORDASOVA MARGARITA
Published: January 2023

The article describes the process of recycling agricultural machinery as the final stage of its life cycle. The issue of responsibility of equipment manufacturers for disposal, as well as economic support for the disposal of decommissioned equipment were described. (Research purpose) The research purpose is studying the recycling system of equipment in Russia and abroad, considering the tasks for improving this system and its effectiveness. (Materials and methods) The utilization of material and science-intensive equipment serves as the final stage of its life cycle, which is important in the circular economy. Russia has legislative and economic bases and theoretical justification that allow creating a resource-saving, environmentally oriented system for the disposal of agricultural machinery at the federal and regional levels. (Results and discussion) The sectoral system of disposal of agricultural machinery after overcoming the existing barriers will solve a number of tasks, the most important of which are resource preservation and environmental safety. Specialists of FNAC VIM have developed a roadmap for the creation of an industry system for the disposal of decommissioned equipment at the regional level and have determined the amount of investment for its implementation. (Conclusions) According to the result of the conducted research and calculations, it will take 4 to 5 years to create an effective Russian system for the disposal of agricultural machinery, delaying these terms will significantly worsen the economy and ecology of the agro-industrial complex of Russia.
COMBINED TECHNOLOGY FOR RESTORATION AND HARDENING OF BUSHINGS OF GEAR HYDRO MOTORS USING GAS-DYNAMIC SPRAYING
Authors:   Central Research Automotive and Automotive Institute NAMI, KOLOMEYCHENKO ALEKSANDR , LOGACHEV VLADIMIR ,   Oryol State Agrarian University named after N.V. Parakhin, TITOV NIKOLAY
Published: January 2023

Over the past 10-15 years, the use of aluminum alloy parts in the structures of hydraulic systems of agricultural machinery has increased significantly. A large proportion of such parts account for sliding bearings (bushings), the working surfaces of which are subjected to significant wear during operation. Micro-arc oxidation is a modern method of hardening aluminum alloy parts, but it does not allow to restore parts with wear greater than 0.15 millimeters. For the restoration of parts made of aluminum alloys with significant wear, the method of supersonic gas dynamic spraying is promising. (Research purpose) The research purpose is analyzing the technical condition of worn bushings REXROTH of gear hydraulic motors and develop a combined technology for restoring their working surfaces by gas-dynamic spraying with subsequent hardening by micro-arc oxidation. (Materials and methods) Sixty bushings were chosen for the study. A digital micrometer MCC-25-0.001 GOST 6507 was used to measure wear. Powders A-80-13 and A-20-11 by Obninsk Powder Spraying Center were used. A silicate-alkaline electrolyte KOH-Na2SiO3 was used for microarc oxidation. (Results and discussion) Based on the information on wear, authors have developed a combined recovery technology with hardening of the end surfaces of gear motor bushings, which includes: cleaning of bushings; fault detection; pre-machining; supersonic gas dynamic spraying of worn surfaces; hardening by micro-arc oxidation; finishing mechanical treatment of the coating and final control. (Conclusions) The developed combined technology of bushings will allow to increase their wear resistance up to 2.2-2.3 times and significantly increase the service life of hydraulic motors. The technology is universal, and the possibility of restoring the bushings of foreign hydraulic motors using the proposed technology is especially relevant due to the need for large-scale import substitution.
Symmetry enhanced variational quantum spin eigensolver
Authors: Lyu Chufan , Xu Xusheng , Yung Man-Hong , Bayat Abolfazl
Published: January 2023

The variational quantum-classical algorithms are the most promising approach for achieving quantum advantage on near-term quantum simulators. Among these methods, the variational quantum eigensolver has attracted a lot of attention in recent years. While it is very effective for simulating the ground state of many-body systems, its generalization to excited states becomes very resource demanding. Here, we show that this issue can significantly be improved by exploiting the symmetries of the Hamiltonian. The improvement is even more effective for higher energy eigenstates. We introduce two methods for incorporating the symmetries. In the first approach, called hardware symmetry preserving, all the symmetries are included in the design of the circuit. In the second approach, the cost function is updated to include the symmetries. The hardware symmetry preserving approach indeed outperforms the second approach. However, integrating all symmetries in the design of the circuit could be extremely challenging. Therefore, we introduce hybrid symmetry preserving method in which symmetries are divided between the circuit and the classical cost function. This allows to harness the advantage of symmetries while preventing sophisticated circuit design.
A Delphi Technique Analysis of Drivers of Outsourcing Decisions Among Multi-Tenanted Shopping Mall Owners in Ghana
Authors: Tannor Oliver , Alhassan Tahiru , Ahiadu Albert Agbeko
Published: January 2023

The purpose of this study was to assess the drivers of outsourcing decisions of multi-tenanted shopping mall owners for facilities management in Ghana.

The study was conducted using nine owners of multi-tenanted shopping malls in Ghana with a history and experience in outsourcing retail properties to third party facility management firms (n = 9) and facilities managers who are experts in providing outsourced services (n = 5). Using the Delphi technique, five surveys were conducted (Delphi polls) using questionnaires that were sent out to the participants via an online survey tool (Survey Heart). The surveys sought to build a consensus from the respondents on the factors that drive their decision to outsource FM in their properties and they were conducted over a period of 9 months.

The results showed that the outsourcing decisions of multi-tenanted shopping mall owners in Ghana is driven by the strategic advantages, cost-saving benefits and the service quality-related benefits that outsourcing gives them. Among these broad factors, the ability to focus on core competencies for competitive advantage, and avoid the fixed cost associated with paying the salaries and other entitlements of in-house staff were the main reasons for their decisions to outsource. The results also showed that the owners are of the view that third-party services providers deliver quality FM services than in-house teams.

The study shows the factors that drive the decision of multi-tenanted shopping malls in Ghana to outsource FM services in their buildings. The findings of the study will be useful to prospective investors into retail properties in Ghana as well as facilities management service providers and further research into facilities management.
The implications of IFRS on the credit market: Evidence from the emerging market
Authors: Al-Shaikh Sinan Salem Kasim , Al-Refiay Hussen Amran Naji , Abdulhussein Azher Subhi
Published: January 2023

Banks are usually assessed credit risk based on borrowers’ financial statements to monitor credit risk over the life of the lending contract (Beatty, 2008; Golubeva, 2020). Thus, this research examines the implications of mandatory International Financial Reporting Standards (IFRS) implementation on the rational investment decisions of lenders and borrowers in the emerging market (e.g., the Iraqi credit market). Quantitative data were collected, nearly 137000 credit/loan contracts and 500 debenture contracts of almost 750 individual companies. We separate the dataset into two periods, earlier and later IFRS implementation using interaction variables to extract other economic factors’ impact on loan contract stipulation. Even though enhancing the quality of financial statements is the most rational objective of IFRS adoption and implementation, the results show insignificant improvement. IFRS implementation has a limited effect in enhancing financial statements’ quality during the conversion period. This finding supports the view that economic advantages do not essentially contribute to the application of IFRS but depend on other considerations and the level of disclosure practices
Formation of pure anatase TiO2 by reactive pulsed dc magnetron sputtering: method for controlling target poisoning state
Authors: Desch Nikolai , Lake Markus
Published: January 2023

The use of pulsed dc-sputtering sources for reactive magnetron
sputtering with oxygen offers a possibility to suppress negative effects
of target poisoning (such as arcing). This results in a wide process
range for the selection of a desired operating point. The control of
target poisoning plays a major role in maintaining constant coating
properties and affects the stoichiometry of the reactive coating, as
well as the coating rate and the economic impact of the coating process.
The target poisoning during the reactive sputtering of titanium under
oxygen addition proceeds nonlinear in a hysteresis. Without the use of a
suited target poisoning control technique the sputtering process can
abruptly change to an unstable state. As a result, variations of the
stoichiometry can occur during the deposition process. A proven method
for maintaining a stable reactive sputtering process is the control of
oxygen flow with the input variable target voltage. By determining the
typical oxygen hysteresis at constant target power and constant argon
flow, an operating point for the control loop is determined. The desired
target voltage then serves as the input variable for the control loop of
the target poisoning. The controlling technique for target poisoning is
a basic requirement for the production of the photolytic active anatase
phase of titanium dioxide by means of reactive magnetron sputtering. The
photocatalytic equipment of surfaces with a titanium dioxide coating in
the anatase phase can be realized with the reactive pulsed dc magnetron
sputter ion plating process (MSIP). The pulsed dc MSIP process provides
the ability to coat a variety of surfaces at temperatures below 200 °C
in an environmentally friendly manner.
Application of Jordan canonical form and symplectic matrix in fractional differential models
Authors: Xu Bo , Shi Pengchao , Zhang Yujin , Zhang Sheng
Published: January 2023

Under consideration of this paper is the application of Jordan canonical form
and symplectic matrix to two conformable fractional differential models. One
is the new conformable fractional vector conduction equation which is
reduced by using the Jordan canonical form of coefficient matrix and solved
exactly, and the other is the new conformable fractional vector dynamical
system with Hamilton matrix and symplectic matrix, which is derived by
constructing the conformable fractional Euler-Lagrange equation and using
fractional variational principle. It is shown that Jordan canonical form and
symplectic matrix can be used to deal with some other conformable fractional
differential systems in mathematical physics.
Numerical analysis of Al2O3-water nanofluids through square cross-section duct with single phase models
Authors: Ozgen Filiz , Kamaci Gurcan
Published: January 2023

In this study, the effect of various concentrations of Al2O3-water nanofluid
on heat transfer in duct with a square cross-section, under conditions of
continuous heat flux and laminar forced flow, investigated numerically.
Reference experi-mental application parameters are accepted as reference,
calculated with single phase homogeneous model (SPHM) and single phase
Brownian model (SPBM) models, and the average heat transfer coefficient
results of numerical models are compared with each other and reference
experimental data. Numerical results obtained with SPHM and SPBM are in
comparison to the relevant experimental data. For SPHM and SPBM results,
0.5%, %1.5, %2.5 Al2O3-water nanofluids, the average deviation rate for the
average heat transfer coefficient is 3.35% and 2.36%, 5.24%, 3.43%, 7.74%,
and 5.3% according to the reference experimental data respectively. 0.5%,
%1.5, %2.5, 2.24%, and 3.81%, 5.86% and 7.47%, 9.58% and 11.6%,
respectively, the average heat transfer coefficient is increased by using
Al2O3-water nanofluid compared to water. It has been observed that, SPBM has
closer results than SPHM model according the relevant experimental data.
Analytical solutions of the refractive index in the ionosphere different approximations
Authors: Kurt Kadri
Published: January 2023

From the square of the refractive index, this research presents many
solutions for the refractive index of the ionosphere, which has a complex
structure. It analyzes the square of the refractive index at a distance of
240 km in the ionosphere using the most often used ordinary wave. When the
refractive index is required, the second and first scenarios of the
refractive index were found to be the most suited.
Turbulent flows around rectangular and triangular turbulators in baffled channels a computational analysis
Authors: Salmi Mohamed , Afif Benameur , Akgul Ali , Jarrar Rabab , Shanak Hussein , Menni Younes , Ahmad Hijaz , Asad Jihad
Published: January 2023

The present paper highlights a computational analysis of air-flows around
rectangular and triangular turbulators inside baffled heat exchanger
channels in order to improve heat transfer between the fluid and their
heated areas. The dynamic and thermal fields as well as fluid temperature
curves at the outlet of the exchanger are studied. The computational study
is conducted by utilizing SIMPLE algorithm with FLUENT system based on the
finite volumes. The analysis clearly demonstrated the presence of highly
turbulent flows and the appearance of many vortices in various regions of
the exchanger. By comparing the different heat exchangers, it was found that
the baffled channel fitted with rectangular turbulators produced high fluid
temperature values at the channel outlet, indicating the significance of
using this rectangular form of turbulators in order to enhance the
interaction between the hot spaces and the used fluid.
Estimation and prediction of two Rayleigh lifetime distributions under joint censoring scheme
Authors: Al-Bossly Afrah , Alawaji Nouf
Published: January 2023

Comparative life tests of a life product have received considerable attention
in the past few years for measuring the relative merits of a product in
competing duration. In this paper, we are adopting the problem of
estimation and prediction of Rayleigh lifetime distributions under joint
Type-I censoring scheme. The point and interval estimation is formulated
with maximum likelihood and the Bayes methods for the unknown parameters.
Also, Bayesian approach is applied in viewpoint both point and interval
prediction. The results of estimation and prediction are discussed through
analysis the set of real data and bulding Monte-Carlo simulation studies.
Finally, we built a numerical discussion of the most important results and
future recommendations.
Using fuzzy time series forecasting and Gaussian mixture model to classify and predict new cases of COVID-19 in Saudi Arabia
Authors: Alghamdi Safar , Ali Sharaf , Aldahlan Maha , Abdalkrim Gaafar , Alhag Azhari
Published: January 2023

In light of the global events resulting from the spread of the Corona
pandemic and viral mutations, there is a need to examine epidemic data in
terms of numbers of infected and deaths, different geographical locations,
and the dynamics of disease dissemination virus. In the Kingdom of Saudi
Arabia (KSA), since the spread of the virus on March 2, 2020, the number of
confirmed cases has increased to 599044 cases until January 13, 2022, of
which 262 are critical cases, while the number of recovery cases have
reached 55035 cases, and deaths are 8901. It is a serious disease, and its
spread is difficult to contain. The number of cases has continued to grow
rapidly since the first cases appeared. Guess and Buck?s model for
forecasting time-series data is an important figure that cannot be crossed
when predicting fuzzy time-series, although several modifications have been
made to the model to improve the accuracy of its results. The Gaussian
mixture model and the fuzzy method for modelling new cases in Saudi Arabia
were used as machine learning methods to classify and predict new cases of
the virus in Saudi Arabia. Foggy time series forecasting. The studied
datasets from the World Health Organization from May 15 to August 12, 2020
were used.
A novel and unique approach for determining the survivor equivalence factors for complex systems
Authors: Alghamdi Safar
Published: January 2023

In this paper, we provide a novel method to determine the survivor equivalence factors for coherent systems, whatever the unit?s lifetime distribution and the struc?ture of the system. In order to determine the survivor equivalence factors for com?plex systems with independent units, we employ the idea of a survival signature and the Reliability Theory R package. Survival functions and mean times to failure are computed using the Reliability Theory package for systems were improved us?ing: reduction technique and duplication techniques, including: hot duplication, cold duplication with reliable switch, and cold duplication with unreliable switch. Survival survivor equivalence factors and mean survivor equivalence factors are taken into consideration as measures for comparing system improvements. For the new survivor equivalence factors method to be understood, numerical example for complex system is provided.
Thermal energy effect on optoelectronic characteristics of InGaAsN/GaAs laser diode under the variation of quantum well number
Authors: Al-Ghamdi Mohammed
Published: January 2023

A laser device based on InGaAsN quantum well active regions emitting at 1.26
mm is reported. The performances of the laser under the effect of thermal
energy are investigated in terms of threshold current, Ith, gain parameter,
gt, photon energy, hn, and cavity length, Lc. Four structures with one,
two, and three quantum wells along with a structure that have three quantum
wells with tensile strained barriers are proposed to study the relation
between the peak gain, gpeak, and photon energy. The founds show that
structures with one and two quantum wells operating at room temperature and
under pulse wave condition, exhibit a linear dependence of gpeak on both Lc
and photon energy. It is shown that the threshold current density, Jth,
increases at any temperature with the cavity length Lc ranging from 250 nm
to 1000 nm. Also, the investigation of the proposed structures shows that gt
decreases with increasing temperature, while the ratio of the cur-rent
density parameter to internal efficiency, Jt/hi, per well increases with the
quantum well number. A comparison was carried out for two particular
structures with three quantum wells and GaAsP barriers, the results show a
decrease in the threshold current per well.
Toward the effeteness for using the social media application with acceptable level of privacy in Saudi community: Quantitative case study
Authors: Bahaddad Adel
Published: January 2023

Social media represent one of the primary outcome of the digital economy
revolution. It represents the fundamental aspects for communication between
individuals by using the systems that helps to facilitate the lifestyle of
developed societies. In contrast, with the spread of the Corona pandemic,
which prompted societies and companies alike to take advantage of social
communication technologies to fill the gap that occurs as a result of
precautionary measures taken by many countries to limit the spread of
infection. However, many users believes that their data and information in
their device become accessible by these applications, which threatens the of
trust and privacy significantly for these applications. Thus, it might
affects the dealing of user and these applications. Therefore, the study?s
question is what the basic requirements that should be provided at last to
be available in social media applications to increase the level of
acceptance for the users. A quantitative sample is collected from different
ages and educational levels from Saudi Arabia to design the integrated
approach that helps to increase the level of trust and use of social media
applications appropriately for the individual and organizational level.
This study is considered a way to increase the use of social applications,
which represent one of the most key features of digital transformation that
can be lead the contemporary digital economy.
Managing access control issues in the choose your own device environment
Authors: Almarhabi Khalid
Published: January 2023

Enterprise mobility is taking the business to another level. Organizations
are nowadays managing to adopt varying enterprise mobility that helps run
the transactions conducted in a bigger and better way. Despite their huge
assistance, most enterprise mobilities are causing mayhem to most
organizations that have integrated them as the sole strategy to keep things
running. They are becoming inevitable and unstoppable trends that pose new
security risks and challenges in controlling and managing corporate data and
networks. If not well monitored, they can unwontedly lead to disclosing
vital information, disruption of services, legal implications, financial
issues, loss of productivity, and modify access policies. One such largely
implemented enterprise mobility is choose your own de-vice. The intention of
this paper is to propose a new framework that would help in managing the
access control issues in the environment of choose your own device. The
main aim of the proposed architecture is to reduce restrictions and enforce
access control policies in choose your own device and the cloud.
The generalized time fractional Gardner equation via numerical meshless collocation method
Authors: Mehnaz Shakeel , Khan Muhammad , Ahmad Imtiaz , Abdel-Khalek Sayed , Alghamdi Ahmed , Inc Mustafa
Published: January 2023

In this study, the meshless collocation approach is used to determine the
numerical solution the generalized time-fractional Gardner equation. The
Crank-Nicolson technique is used to approximate space derivatives, whereas
the Caputo derivative of fractional order is used to approximate the first
order time fractional derivative. The numerical solutions, which show the
method?s efficacy and accuracy, are pro?vided and discussed. The numerical
solution shows that our method is effective in producing extremely accurate
results.
Aquaculture in Serbia
Authors: Markovic Zoran
Published: January 2023

Serbian aquaculture is practiced in warmwater (carp) farms, coldwater (trout)
farms, cage systems, recirculating aquaculture systems (RAS) and fish tanks.
The total area under carp farms (ponds) registered by the Statistical Office
of the Republic of Serbia (SORS) in the last fourteen years has varied
between 6,192 and 8,940 ha, while under the area under trout farms was
between 33,255 m2 and 81,411 m2. Total fish production over the last
fourteen years varied between 5,070 tons, recorded in 2017 and 8,195 tons of
market fish, recorded in 2010. Fish production is dominated by common carp
and rainbow trout (about 90% of total production). In addition to these two
species, several other species are cultured at carp farms, such as catfish,
pikeperch, pike, silver carp, bighead carp, grass carp, Prussian carp and
tench. In trout farms, additional cultured species are usually brook trout,
huchen and grayling, while cultured fish species in RAS systems are sterlet
and Russian sturgeon.
Microbiological characteristics of fish reared in purified wastewater from an abattoir
Authors: Pelic Milos , Gavrilovic Ana , Jug-Dujakovic Jurica , Marinovic Zoran , Mirilovic Milorad , Djordjevic Vesna , Novakov Nikolina , Ljubojevic-Pelic Dragana
Published: January 2023

Wastewater from abattoirs in some countries is disposed of into water bodies
without adequate removal of contaminants. Therefore, the use of wastewater
in fish production could pose a serious risk for humans, fish and other
aquatic organisms due to possible transfer of pathogenic bacteria in aquatic
culture environments. The aims of the present study were to assess the
levels of individual microorganisms in different tissues of common carp and
to determine any correlation with the season of sampling and the type of
analysed sample in common carp reared in an integrated production system
that used purified water from an abattoir. A fish pond was filled mostly
with purified water from an abattoir, but also partly with well water. Carp
fingerlings were stocked in the earthen fishpond in March and reared in
ambient conditions. Fish were collected in the spring and autumn of the
following year and the microbiological quality was assessed. Carp fillets
with skin, gills and digestive tract samples were collected individually
under aseptic conditions. All analyses were performed according to standard
procedures. The levels of all the examined bacteria in the fish were under
prescribed hygiene norms. Also, Listeria spp., sulphite-reducing clostridia
and Staphylococcus aureus were not found in the samples. Furthermore,
pathogenic bacteria, Salmonella and Listeria monocytogenes were not isolated
from the samples. The hygienic quality of the fish produced in purified
waste water from an abattoir was acceptable, and the common carp meat was
safe for human consumption.