Air pollution has been a significant issue in recent years due to rising industrialization and maritime activity around the globe, making air pollution forecasting a crucial concept in environmental study. This prompted the deployment of principal component analysis (PCA) for the source apportionment amongst the air quality parameters and the artificial neural network (ANN) for the prediction of the significant air quality parameters in ports area for this study. The study was carried out in seven federal ports across Malaysia for the period of 2009 and 2018, and 14 air quality parameters were calculated using information on air quality acquired from the Department of the Environment. The results of the study showed PCA identified NOx, NO, SO, NO2, CO, and PM10 as the variables of significance with a variation of 44.31% with CO exhibiting the highest factor loading (0.968). Artificial Neural Network-Source Apportionment accurately predicted CO as the major pollutant with R2 in training.....

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This paper presents a new approach based on multi-dimensional evaluation and benchmarking for data hiding techniques, i.e., watermarking and steganography. The novelty claim is the use of evaluation matrix (EM) for performance evaluation of data hiding techniques; however, one major problem with performance evaluation of data hiding techniques is to nd reasonable thresholds for performance metrics and the trade-o® among them in di®erent data hiding applications. Two experiments are conducted. The rst experiment included LSB techniques (eight approaches) based on di®erent payload results and the noise gate approach; a total of nine approaches were used. Five audio samples with di®erent audio styles are tested using each of the nine approaches and considering three evaluation criteria, namely, complexity, payload, and quality, to generate watermarked samples. The second experiment involves the use of various decision-making techniques simple additive weighting (SAW), multiplicative e.....

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EuD4TEA crystals have a few fascinating properties, such as photoluminescence and mechanoluminescence. Both phenomena occur when external excitation is performed on EuD4TEA crystals. Photoluminescence is excited by external light radiation, whereas mechanoluminescence is stimulated by an external mechanical force applied to it. EuD4TEA has easily been prepared only by standard crystallisation using dibenzoylmethane, europium nitrate hexahydrate, and triethylamine. This research mainly focused on the solvent for the synthesis of EuD4TEA crystals. The solvents used were ethanol and acetone. Acetone has the main credit for producing much higher-quality EuD4TEA crystals in certain aspects. Acetone-based end products are larger and have higher light emission under excitation. © 2024, Semarak Ilmu Publishing. All rights reserved...

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The purpose of the current research was to explore the key factors in the development of grass-roots football in Indonesia, including the current development process and challenges. This research was qualitative research. A semi-structured interview was conducted to gather the data. Through interviews, the researcher gathered the participants overview and perspective regarding the current practice and challenges of grass-roots football in Indonesia. In this case, 7 coaches at a grassroots football academy in Indonesia were involved in this research, as determined by the purposive sampling method. The participants were chosen based on their coaching experience, which ranged from 5 to 16 years. A qualitative data analysis application, namely N-Vivo, was utilized to analyze the data. The finding indicated that two big themes were created: the current development of grassroot football academy in Indonesia and the current challenges of grassroot football academy in Indonesia. Both themes ha.....

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Existing research on strategies employed by preschool teachers to promote physical activities within families and communities remains limited and lacks clarity. This study aims to comprehensively explore the strategies employed by preschool teachers to promote physical activities within families and communities. Utilizing a qualitative research design specifically, multiple case studies as the research approach, and purposive sampling, ten teachers participated in the study. The interview protocol, derived from established theories and past studies, underwent validation by two experts. Thematic analysis was employed to manually analyze and code the data. Themes encompassing preschool teachers’ instructional strategies for facilitating physical activities for children in their care include the teaching of physical activities, the use of games, utilizing television to encourage children to exercise, and employing structured play and exercise routines. Additional findings highlight pres.....

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Participating in sports has been shown to promote overall wellness and, at the same time, reduce health risks. As more people are participating in sports, competitions have increased, and every aspect of the game has been focused by coaches and athletes in order to improve performance. One of these aspects is the warm-up session. The purpose of this study was to investigate the acute effect of a dynamic warm-up versus a proprioceptive neuromuscular facilitation (PNF) warm-up on the sprint and jump performance of recreationally active men. Thirty (n = 30) males were randomly assigned to undergo three sessions of different warm-up types, 72 h apart, involving either proprioceptive neuromuscular facilitation (PNF), dynamic stretching (DS), or no stretching session (control). The PNF and dynamic modes of stretching improved vertical jump performance, F (2.58) = 5.49, p = 0.046, to a certain extent (mean + 3.32% vs. control, p = 0.002 for dynamic and mean + 1.53% vs. control, p = 0.048 for .....

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Phytochemical investigation of methanolic extract of L. rubiginosa using modern chromatographic techniques has led to the isolation of three new triterpenoid saponins, lepiginosides A-C (1-3), a new farnesyl glycoside, lepiginoside D (4), together with lepisantheside B (5) and gleditsoside C (6). The characterization and structural elucidation of the isolated compounds were established by extensive spectroscopic data analysis and comparison with literature data. Moreover, the antibacterial activity against seven bacteria, but none is active. © 2022 Informa UK Limited, trading as Taylor & Francis Group...

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Despite the acknowledged importance of integrating creativity into school curricula, students with learning disabilities often lack the skill of creativity, due to its absence in classroom instruction. To address these gaps, the authors developed a needs analysis questionnaire assessing the necessity of a creativity module for primary school students with learning disabilities, focusing on Torrance's four creativity elements: (a) Originality, (b) Fluency, (c) Flexibility, and (d) Elaboration. This study, emphasizing content validity and reliability testing, comprised rigorous validation by a panel of nine special education experts, resulting in high content validity scores. In Part II, all items were accepted, yielding an overall S-CVI score of 0.97, indicating a ‘very suitable’ construct. In Part III two items were rejected; the overall S-CVI score remained at 0.80, signifying ‘very suitable’. A pilot test with 30 special education teachers demonstrated Cronbach's Alpha values.....

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Investigating learners' motivational factors from Basic Psychological Needs (BPN) has been prevalent in a foreign/second language domain, but there is a dearth of well-documented research on ESP instruction. This study addressed the void by scrutinizing ESP learners' BPN of relatedness, competence, and autonomy using a validated and reliable BPN instrument to assess online ESP practices and challenges within unideal EFL situations. A total of 617 ESP students and 94 ESP lecturers from 14 universities across provincial areas of Indonesia participated in the study. A mixed-method design administering questionnaire and interview was applied to draw ESP students' BPN from the perspective of lecturers and students. The results revealed significant differences between lecturers' and learners' perceptions regarding several indicators of relatedness, competence, and autonomy categories. While the lecturers' questionnaire and interviews reported that the ESP students had an acceptable level of .....

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The cornerstone of success for governmental organizations, particularly when employees lack motivation, is their commitment. This research delves into the dynamics of employee loyalty within the public sector of Dubai, examining the interplay between leadership approaches and employee dedication, with a special focus on the Dubai Immigration Department (DID). Furthermore, it evaluates how communication influences the nexus between leadership styles and employee commitment at DID. Employing quantitative methodologies for data gathering and analysis through smart-PLS, the study uncovers that both transformational and transactional leadership positively impact employee commitment at DID. Additionally, a notable correlation exists between these leadership styles and communication effectiveness. It was also discovered that communication positively mediates the relationship between the two leadership styles and employee commitment. This research's novel contribution lies in highlighting comm.....

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