bluuebunny/crossref_metadata_2025 huggingface dataset:
EVALUATION OF THE "TEACHING SKILLS ENRICHMENT" PROGRAM THROUGH THE CONTEXT INPUT PROCESS PRODUCT (CIPP) MODEL
Authors: Suharman Suharman , Rohman Nur
Published: March 2024

This study aims to evaluate the success rate of teaching skills enrichment programs in PGMI Study Programs through the CIPP program evaluation model. This research uses qualitative descriptive research methods through a case study approach in the Madrasah Ibtidaiyah STAIN Teungku Dirundeng Teacher Education Study Program, Meulaboh, West Aceh. Data collection methods through observation, interviews, and documentation. The results showed: (1) context evaluation refers to programs designed as a form of debriefing to prospective students before direct teaching practice in schools (FEP). (2) Evaluation of inputs shows full support from teaching human resources, budget funds, and facilities and infrastructure supporting activities. (3) The evaluation process shows that the teaching skills enrichment program is implemented based on three stages, namely; planning, reporting, and evaluation. (4) Product evaluation shows that the skill enrichment program produces several learning tools such as learning syllabi, lesson plans, and interactive learning media.
DEVELOPMENT OF THEMATIC E-MODULES BASED ON AL-QUR'AN VERSES TO IMPROVE STUDENT LEARNING OUTCOMES
Authors: Eva’atussalamah Eva’atussalamah , Fitri Agus Zainul , Choiruddin Choiruddin
Published: March 2024

The lack of effectiveness of government thematic books taught in elementary schools currently tends to lead to low learning outcomes during the covid-19 pandemic. However, the problem seems to be getting worse because of the unavailability of suitable learning media to support the teaching and learning process from home for educators and students during the covid-19 pandemic. Therefore, this research was conducted to develop thematic e-module media based on Al-Qur'an verses to improve student learning outcomes during the covid-19 pandemic. This study was developed based on the Borg & Gall model with data collected using questionnaires, tests, and documentation and analyzed through the Independent Sample T-test. The results show sig.(2-tailed) of 0.000 < 0.05. then Ha is accepted while H0 is rejected. It was found that the average student learning outcomes improved to 83.4 and learning completeness by 83.33% after receiving treatment in the form of thematic e-module media based on Al-Qur'an verses. This shows that this subjects is feasible to be implemented as a learning medium because of its effectiveness in improving the learning outcomes of fifth-grade students of MI Al-Hidayah 02 Betak.
THE CORRELATION BETWEEN THE AUTHORITATIVE PARENTING OF ELEMENTARY SCHOOL TEACHER PARENTS AND LEARNING ASSISTANCE FOR CHILDREN IN SUKOHARJO REGENCY
Authors: Kurniadi Kurniadi , Purnasari Nurwulan
Published: March 2024

Most parents face difficulties in learning assistance at home that make children unable to learn anything. This study aimed to ascertain the relationship between the authoritative parenting of elementary school teacher parents and learning assistance for children in Sukoharjo Regency. The validity test, reliability test, normality test, homogeneity test, linearity test, and basic linear regression analysis were the ex post facto quantitative techniques used in this research. Cluster sampling resulting in 317 participants in Sukoharjo was utilized to select the study samples out of a population of 6,175 elementary school teachers. The findings revealed a substantial correlation between the learning assistance for elementary school students in Sukoharjo and the authoritative parenting style of elementary school teacher parents. The straightforward linear regression test showed that 0.000 to 0.05 was a significant level. In addition, it was found that Y = 28.174 + 0.413X was a positive regression equation. These findings indicate a substantial association between the learning assistance variable and authoritative parenting characteristics.
MITIGASI BENCANA BERBASIS KEARIFAN LOKAL PADA MASYARAKAT ADAT KASEPUHAN CIPTAGELAR
Authors: Putri Nadya Anggara , Sutiyo Sutiyo , Ristiani Ida Yunari , Supriatna Agus , Uluputty Irfan
Published: March 2024

Budaya dan keyakinan yang dipercaya oleh masyarakat merupakan kearifan lokal dan menjadi bagian masyarakat yang tidak dapat dipisahkan. Salah satu masyarakat tradisional yang cukup terkenal di Indonesia yaitu masyarakat adat Kasepuhan Ciptagelar. Hasil pra survey menunjukkan adanya indikasi memudarnya nilai kearifan lokal pada masyarakat tradisional karena era modernisasi, serta adanya potensi bencana seperti kekeringan akibat perubahan iklim di Indonesia. Berdasarkan indikasi tersebut, Penelitian ini kemudian bertujuan untuk mengetahui risiko bencana dan bagaimana mitigasi bencana berbasis kearifan lokal yang telah dilakukan di Kasepuhan Ciptagelar. Penelitian ini juga mengulas tentang kebijakan pemerintah yang tepat dalam pengurangan risiko bencana di Kasepuhan Ciptagelar. Metode penelitian yang digunakan yaitu kualitatif dengan teknik pengumpulan data dilakukan dengan menggunakan wawancara, dokumentasi dan observasi. Hasil penelitian menunjukkan Kasepuhan Ciptagelar memiliki beberapa potensi risiko bencana diantaranya yaitu Gempa Bumi, Erosi dan Tanah Longsor, serta Perubahan Iklim. Kearifan Lokal pada Kasepuhan Ciptagelar sudah dapat dikategorikan sebagai media Mitigasi Bencana. Maka, kebijakan pemerintah yang tepat dalam pengurangan risiko bencana berbasis kearifan lokal di Kasepuhan Ciptagelar adalah kebijakan yang menerapkan pendekatan partisipatif, bersifat komunal, dan menjadikan kelembagaan dan tokoh adat sebagai motor utama penggerak program di lapangan.
Strategies of NHX antiporters to deal with salt stress
Authors: Maach Mostapha , Akodad Mustapha , Pilar Rodríguez-Rosal María , Venema Kees , Skalli Ali , Ait Hmeid Hanane , El haddaji Hamza , Gueddari Hicham , Baghour Mourad
Published: March 2024

The adverse effects of salinity on plant growth are generally associated with the low osmotic potential of the soil solution and the high level of sodium toxicity (and chlorine toxicity for some species) which cause multiple perturbations on plant metabolism, growth, and development at the molecular, biochemical and physiological levels. The vacuolar NHX and plasma membrane SOS antiporters mediate cation and proton exchange across the tonoplast and plasma membrane, respectively. The SOS transporters allow the excretion of Na+ from the cytoplasm to the outside environment and alternatively, NHXs provide Na+ transport from the cytoplasm to the vacuole. Cellular ion homeostasis is an essential phenomenon for all organisms. Most cells manage to maintain a high level of potassium and a low level of sodium in the cytoplasm through the coordination and regulation of different transporters and channels instead of the NHX-type vacuolar antiport. In this article, some important mechanisms in the regulation of ionic ions such as Na+. will be discussed.
Strengthening capacity for forest protection in Myanmar
Authors: Lee S.S. , Than W.W. , Tint K. , Saing S. , Animon I. , Sathyapala S.
Published: March 2024

Pests and diseases have been reported by Myanmar foresters and plantation owners as significant challenges to the quality and quantity of wood supply from natural and planted forests. As part of a FAO project on strengthening local capacity in forest health, questionnaire surveys on
pests and diseases and a needs assessment were conducted among companies/organizations involved in growing forests. Thirteen and 12 participants responded to the two surveys, respectively. Respondents grew 10 different tree species, namely Tectona grandis, Acacia mangium,
Acacia hybrid, Eucalyptus spp., Gmelina arborea, Swietenia macrophylla, Paulownia kawakamii, Xylia xylocarpa, Bruguiera sexangula and Rhizophora apiculata. Growers recognized pests of teak but were less familiar with pests of the other
tree species. Diseases were only reported from teak and A. mangium. Weeds were reported only from mature plantations. Workers were mostly educated only up to primary school level. None were trained in pest and disease management and most did not know about invasive alien species (IAS) and
integrated pest and disease management (IPM). Based on the needs identified from the surveys, three workshops were conducted for over 100 local participants.
Tree seed supply system in Ethiopia: modeling source and dissemination of priority species
Authors: Mehari A.B. , Abtew A.A. , Mulatu Y.M.
Published: March 2024

Providing quality planting materials is critical to sustainable forest restoration initiatives. This study aimed to analyze the tree seeding system and to evaluate and model the configuration of the tree seed supply system from the source to the growers. Primary and secondary data were
collected in the Amhara region of Ethiopia. A total of 52 sample participants were selected using the snowball method and interviewed using open-ended questionnaires and Likert questionnaires. Data were analyzed using content and gap analysis methods using Atlas. ti version 8 software. The
gap analysis revealed a lack of provenance trials, improved tree seeds, priority species in nurseries, and existing legislation. The model configuration was sequenced in tree seed source, procurement, and dissemination. Informal farmer suppliers covered 83 percent of the system. The decentralized-centralized-centralized
and centralized-centralized-centralized were configured for the private enterprises and Amhara Forest Enterprise, respectively, as formal seed suppliers. In order to overcome the difficulties in tree seed production, those involved should work on the production of an improved tree.
Training forestry students for uncertainty and complexity: the development and assessment of a transformative roleplay
Authors: Wallin I. , Brukas V.
Published: March 2024

Climate change increases the uncertainties associated with the management of forests at the same time as societies seek to intensify the utilization of bio-based resources for climate mitigation. Participatory processes in decision-making are widely acknowledged to be suitable for finding
effective and legitimate trade-offs in complex and uncertain situations. Inspired by transformative learning theory, we developed a roleplay within an international forestry master’s program with the aim to train students’ personal skills in preparation for a professional life
involving participatory decision-making situations. The analysis of students’ learning experiences, demonstrates the capacity of the roleplay to facilitate transformative learning and train crucial personal skills such as self-reflection, self-awareness and critical reflection. We provide
guiding principles for implementing transformative roleplays, or further developing existing roleplays, in regular forestry curricula.
IL-33/soluble ST2 axis is associated with radiation-induced cardiac injury
Authors: Yasen Xiaokeya , Aikebaier Renaguli , Maimaiti Atiguli , Mushajiang Munire
Published: March 2024

Radiotherapy for treating breast cancer is associated with cardiac damage. This study aimed to investigate the role of the interleukin (IL)-33/soluble receptor ST2 (sST2) axis in radiation-induced cardiac injury. Expressions of IL-33 and sST2 were detected in breast cancer patients following radiotherapy, radiation-induced cardiac damaged mice model, and cardiomyocytes using quantitative real-time PCR (qRT-PCR) and immunohistochemical assay. Cardiac injury was evaluated through an ultrasound imaging system and hematoxylin & eosin staining. The transcriptional factor was assessed using dual-luciferase reporter assay and chromatin immunoprecipitation. The results indicated that IL-33 and sST2 were highly expressed in breast cancer patients, which further elevated post-6 months but reduced after 12 months of radiotherapy. Radiation induces cardiac dysfunction and elevated IL-33 and sST2 levels in a time-dependent manner. However, silencing of IL-33 decreased sST2 expression to alleviate radiation-induced cardiac dysfunction. The IL-33 could be transcriptional activated by TCF7L2 by binding to IL33 promoter sites, which mutation alleviated cardiomyocyte injury caused by radiation. Additionally, radiation treatment resulted in higher levels of TCF7L2, IL-33, and sST2 in cardiomyocytes, and TCF7L2 knockdown reduced IL-33 and sST2 expression. In conclusion, TCF7L2 transcriptional-activated IL-33 mediated sST2 to regulate radiation-induced cardiac damage, providing novel insights into radiotherapy-induced cardiac damage.
Influence of unsupported sleepers on flange climb derailment of two freight wagons
Authors: Matej Jan , Seńko Jarosław , Caban Jacek , Szyca Mikołaj , Gołębiewski Hubert
Published: March 2024

Two freight platform wagons connected together conventionally or in the form of so-called rigid connection were taken into account to investigate the influence of unsupported sleepers on climb flange derailment on transition curve. Presented results are related to the freight wagons equipped with two-axle Y25 standard bogies, entering at an acceptable speed in the transition curve of the track with the radius of 150 or 1,000 m. Three cases have been analyzed: only the inner rail, only the outer rail, or both rails had unsupported sleepers. Simulation models were prepared using the VI-Rail software and nonlinear wheel–rail contact model. The dynamic calculations showed that wheel flange climb derailment caused by unsupported sleepers will only occur if deflection of the rail or track on transition curve is deep enough. These tests allowed us to determine the relationship between the radius of curvature and the depth of the trough causing derailment of the wagons. Calculation results allowed us to answer also the questions whether the method of connection and the weight of freight wagons have a significant impact on the wheel flange climb derailment.
Pan-cancer and single-cell analysis of actin cytoskeleton genes related to disulfidptosis
Authors: Shen Li-ping , Jiang Han-tao
Published: March 2024

Disulfidptosis was recently reported to be caused by abnormal disulfide accumulation in cells with high SLC7A11 levels subjected to glucose starvation, suggesting that targeting disulfidptosis was a potential strategy for cancer treatment. We analyzed the relationships between gene expression and mutations and prognoses of patients. In addition, the correlation between gene expression and immune cell infiltration was explored. The potential regulatory mechanisms of these genes were assessed by investigating their related signaling pathways involved in cancer, their expression patterns, and their cellular localization. Most cancer types showed a negative correlation between the gene-set variation analysis (GSVA) scores and infiltration of B cells and neutrophils, and a positive correlation between GSVA scores and infiltration of natural killer T and induced regulatory T cells. Single-cell analysis revealed that ACTB, DSTN, and MYL6 were highly expressed in different bladder urothelial carcinoma subtypes, but MYH10 showed a low expression. Immunofluorescence staining showed that actin cytoskeleton proteins were mainly localized in the actin filaments and plasma membrane. Notably, IQGAP1 was localized in the cell junctions. In conclusion, this study provided an overview of disulfidptosis-related actin cytoskeleton genes in pan-cancer. These genes were associated with the survival of patients and might be involved in cancer-related pathways.
Overexpression of miR-532-5p restrains oxidative stress response of chondrocytes in nontraumatic osteonecrosis of the femoral head by inhibiting ABL1
Authors: Shang Peng , Liu Ying , Ren Jie , Liu Qingqing , Song Haobo , Jia Junqing , Liu Qiang
Published: March 2024

This study is to probe into the meaning of serum miR-532-5p in nontraumatic osteonecrosis of the femoral head (ONFH), and a molecular mechanism of miR-532-5p in the development of nontraumatic ONFH. This study enrolled 96 patients diagnosed with nontraumatic ONFH and 96 patients with femoral neck fracture. The levels of miR-532-5p, ABL1, MMP-3, MMP-13, and cleaved-caspase3 were determined. Radiographic progression was assessed by ARCO staging system. Visual analog scale (VAS) and Harris hip score (HHS) were employed for evaluation of the symptomatic severity of nontraumatic ONFH. Cell viability and apoptosis in chondrocytes isolated from clinical samples were investigated with CCK-8 and flow cytometry. The levels of lactic dehydrogenase (LDH), superoxide dismutase (SOD), and malondialdehyde (MDA), mitochondrial membrane potential (ΔΨm), and reactive oxygen species (ROS) were determined. miR-532-5p was downregulated in tissues and serum of patients with nontraumatic ONFH, negatively related with ARCO staging and VAS, and positively correlated with HHS. Cell apoptosis, LDH, MDA, and ROS strengthened, while cell viability, ΔΨm, and SOD reduced in chondrocytes of nontraumatic ONFH patients. ABL1 was upregulated in cartilage tissues from nontraumatic ONFH patients. miR-532-5p targeted ABL1, and overexpressed miR-532-5p alleviated nontraumatic ONFH-induced oxidative stress damage of chondrocytes by restraining ABL1. miR-532-5p ameliorated oxidative stress injury in nontraumatic ONFH by inhibiting ABL1.
A review on partial substitution of nanosilica in concrete
Authors: Xiaohan Zhang , Ahmad Jawad , Jebur Yasir Mohammed , Deifalla Ahmed Farouk
Published: March 2024

One of the most popular and widely used cementitious nanoparticle materials is nanosilica (NNS). Although several researchers discuss how NNS affects the characteristics of concrete, knowledge is dispersed, making it difficult for the reader to assess the precise advantages of NNS. Therefore, a detailed review is required for the substitution of NNS in concrete. The present reviews collect the recently updated information on NNS as concrete ingredients. First, a summary of the manufacturing, physical, and chemical characteristics of NNS is provided. Second, the characteristics of fresh concrete are examined, including its effect on setting time, flowability, air content, and fresh density. Third, strength properties such as compressive, tensile, and flexure capacity are discussed. Finally, microstructure analyses such as scanning electronic microscopy and X-ray diffraction are discussed. The results show that NNS enhanced the mechanical and durability of concrete due to the pozzolanic reaction and microfilling voids but decreased the slump flow. The optimum dose is important for maximum performance. The typical optimum dose of NNS varies from 1 to 3% by weight of cement. This article also suggests future research directions to improve the performance of NNS-based concrete.
Enantiomeric separation of four pairs of alkaloids by using a C18 column tandem polysaccharide-based chiral column
Authors: Si Xiaoxi , Tian Yu , Xu Shufang , Liu Chunbo , Li Zhenjie , Yang Ji , Guan Ying , Xie Yangzhou , Shi Xiaoqing , Xu Zhigang , Liu Zhihua
Published: March 2024

Alkaloid enantiomers have different physiological and pharmacological effects, and different chiral compositions have a large impact on cigarette sensory and use safety. Studying the effects of different configurations of alkaloid enantiomers on cigarette sensory is important for the development of tobacco products, but the chiral separation of alkaloid enantiomers has become the core problem. Here, the application of a C18 column coupled with a polysaccharide-based chiral column to separate and detect four pairs of alkaloid enantiomers in tobacco and cigarette smoke of different brands was investigated. Results showed that the tandem technology of the two columns enabled the baseline separation of four pairs of alkaloid enantiomers. The resolution of enantiomers of alkaloids in different tobacco samples differed in content and ratio, showing different chiral distribution characteristics. According to the different distribution characteristics of alkaloid enantiomers, tobacco samples of different brands can be distinguished and real cigarettes can be identified.
Seasonal trends in the Early Twentieth Century Warming (ETCW) in a centennial instrumental temperature record from Central Europe
Authors: Kocsis Tímea , Pongrácz Rita , Hatvani István Gábor , Magyar Norbert , Anda Angéla , Kovács-Székely Ilona
Published: March 2024

The goal of the present paper is to investigate whether any objectively defined and statistically significant changes can be discovered in one of the longest homogenized instrumental temperature records in East-Central Europe. Thus, it is hoped that the present analysis will add to earlier attempts and elucidate the persistence of the warming period observed in the early 20th century. Similar to the global tendency, the Early Twentieth Century Warming (hereinafter, ETCW) period can be identified between 1931 and 1951 in the annual mean temperature time series of Keszthely, a small town in Hungary. The Mann-Kendall trend test was used to determine whether a monotonic trend was present, as it is not possible to regard the residuals of the linear trend as normally distributed. A significant rising trend can be observed in the warming period in spring of the years between 1925 and 1951. In case of summer and autumn, this period cannot be characterized as having any significant identifiable trend. A rise in the mean can, however, be recognized. Overall, the specific regional manifestation of the global ETCW may clearly be illustrated in this study via detailed statistical analysis of the temperature records for Keszthely, a location with one of the longest temperature records in Hungary. However, other regions surrounding Hungary show similar climatic trends, emphasizing the fact that the behaviour presented here is not unique to Central and Eastern Europe.
Disproportionate exposure to urban heat island intensity – The case study of Győr, Hungary
Authors: Szemerédi Eszter , Remsei Sándor
Published: March 2024

Extensive research has shown that urbanisation has a profound effect on the local climate system, leading to the formation of urban heat island. Exposure to urban heat islands poses a major health risk, and there is a growing body of literature recognising that urban population groups with particular demographic characteristics living in specific types of residential environments are disproportionately affected. By combining surface urban heat island data from the Global Surface Urban Heat Island Explorer with neighbourhood-level data on demographics and the type of housing, this study assesses disproportionate exposure to surface urban heat island intensity in the city of Győr, Hungary. Results of the study highlight the importance of targeted interventions for environmental justice, especially in areas characterised by housing estates, high population density and high ageing index.
Gekić, H., Bidžan-Gekić, A., Drešković, N., Mirić, R. and Reményi, P.: The Geography of Bosnia and Herzegovina: Between East and West
Authors: Kőszegi Margit
Published: March 2024

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The influence of helmet certification in motorcycle helmets protective performance
Authors: Radzuan Nurul Qastalani , Hassan Mohd Hasnun Arif , Omar Mohd Nadzeri , Abu Kassim Khairil Anwar
Published: March 2024

The convenience of online shopping has increased access to a vast array of helmet options and deals for motorcyclists. However, the e-commerce enables an influx of unverified and potentially hazardous helmets lacking the rigorous quality control into the market, hence, placing unaware bargain seekers at risk. The non-certified variants questions in terms of impact protection abilities because they visually look similar to certified helmets. This study compared certified full face and open face helmets against their non-certified counterparts by analysing injury predictor metrics. Using a test rig simulating 5.58 ± 0.29 m/s impacts, an anthropomorphic test device wearing both helmet types and certification statuses measured peak resultant linear and angular accelerations, head injury criterion alongside brain injury criteria scores. The data revealed comparable side and rear impact performance between non-certified and certified helmets. However, frontal impacts exposed deficiencies without certification. The non-certified full face helmets registered over twice the peak linear acceleration of certified while open face types still exceeded certified by 40% in frontal impacts. Additionally, non-certified full face helmets indicated up to 100% predicted concussion risks in side and frontal crashes based on the angular accelerations. The poorer frontal impact and elevated injury odds demonstrate certification's key safety advantages that certification should not be ignored while it still providing more protection than no helmet. However, individual needs to carefully select helmets due to performance differences of helmets. Riders should ultimately prioritize proven protection given the severe consequences of head trauma though non-certified may suffice for some low-risk environments.
Review of path planning of welding robot based on spline curve
Authors: He Guan , Teo H. H. , Moey Lip Kean
Published: March 2024

This paper assesses the efficacy of intelligent path planning for welding robots utilizing splines. Traditional path planning methods can result in inefficient and inaccurate welding operations. The study reviews current research and case studies to appraise the practical application of spline-based path planning across diverse industrial scenarios. It underscores the benefits of discovering the shortest path and reducing cycle time while acknowledging challenges such as calibration accuracy and sensitivity to sensor data noise. The introduction of artificial intelligence algorithms in automobile welding path planning enables a more precise replication of the body's design curve, ensuring the continuity and smoothness of the welding process. This, in turn, fosters further automation and optimization of the automotive welding manufacturing process. The current research concentrates on integrating intelligent optimization algorithms and spline curves to provide an efficient and intelligent method for welding path planning. Intelligent path planning based on spline curves demonstrates significant potential in enhancing welding efficiency, determining the shortest path, and holds promising applications in the broader research field of welding path planning.
Investigation of collision estimation with vehicle and pedestrian using CARLA simulation software
Authors: Beg Mohammad Sojon , Ismail Muhammad Yusri
Published: March 2024

The effectiveness of object detection systems in diverse driving environments is crucial in the growing field of automotive safety. The increasing frequency of traffic accidents, especially at busy intersections with heavy traffic and limited visibility, highlights the pressing requirement for advanced vehicle detection systems. Prior to implementing the real-time experiment, it is advisable first to conduct a simulation in order to gain a deeper understanding of the practical implementation in real-time scenarios. On the other hand, this approach has the potential to reduce both time and cost significantly. The system utilised a software-based solution by implementing the CARLA simulator. This study aims to analyse vehicle detection at T-junctions, cross-junctions, and roundabouts using image data obtained from the CARLA platform. Subsequent analysis differentiates between vehicles and non-vehicle objects in the dataset. The model concludes by proposing Python-based integrative solutions to enhance object detection systems for diverse roads and atmospheric situations. The significance of this study is evaluating the probability of accidents by tracking key factors like vehicle speed, distance, and density on various road types. In future research, it will be essential to investigate how different weather conditions, including rain, haze, and low-light scenarios, affect on sensor performance, specifically LiDAR sensors. Advanced machine learning techniques are proposed to evaluate the effectiveness of the vehicle detection system in collecting key parameters like vehicle count, speed, and distance in junction and roundabout scenarios. These findings have important implications for the advancement of more efficient, context-aware detection systems in the automotive sector.
Effect of cutting clearance in shear-slitting process on the residual stress and cut surface quality of AA6111-T4 aluminum alloy
Authors: Bohdal Łukasz
Published: March 2024

The paper presents the problem of the correct selection of the cutting clearance during the cutting process of aluminum alloys on circular shears. Currently, production lines lack correct guidelines on how to set the cutting clearance depending on the type of aluminum alloy and its thickness. This causes defects in the products and accelerated wear of the cutting tools.The paper presents the results of experimental and numerical research related to the process of shear-slitting of t = 1 mm AA6111-T4 aluminum alloy. During the experimental studies, it was determined how the value of the clearance affects the characteristic features of the cut edge and deviations of the shape of the product. Using numerical tests, the influence of the clearance value on the stress values in the cutting zone was determined. For the AA6111-T4 aluminum alloy, the highest product quality was obtained using clearances hc = 0.09 mm and hc = 0.12 mm. The conducted experimental research can be useful on production lines in the aspect of the correct selection of technological parameters of the process due to the adopted energy and quality criteria.
Optimizing ageing conditions for commercial NiTi archwires: Insights from thermal phase transformation and tensile deformation analysis
Authors: Munir Asad , Razali Muhammad Fauzinizam , Mahmud Abdus Samad , Ng Chinwei , Zulfiqar Sana
Published: March 2024

Superelastic nickel-titanium (NiTi) archwires are now commonly used as the standard archwire during the orthodontic alignment and levelling stage. They are preferred due to their ability to apply minimal force on teeth while allowing for a wide range of tooth movements. During orthodontic treatment, the orthodontist assesses the dimension and shape of the NiTi archwire to determine the amount and direction of force required to align misaligned teeth. The main contribution of this study is the parametric analysis and establishment of a set of optimal ageing temperatures and duration for the investigation of functionally graded nickel-titanium archwire using differential scanning calorimetry (DSC) and tensile deformation testing. The mechanical and thermal phase transformation behavior after ageing at six temperatures for duration of 15 minutes have been investigated using tensile deformation test and differential scanning calorimetry (DSC) test in this paper. Experimental results reveal that in thermal analysis as the ageing temperatures increase from 400 °C to 490 °C, the austenite finish temperature rises to a value between 9.53 °C and 35.48 °C, and subsequently decreases to 520 °C. The archwire specimen aged for temperature of 490 °C exhibited the austenite finish temperature of around 35.48 °C, and it is highest among the aged wire specimens closest to oral temperature. In tensile deformation, the ideal ageing temperature for orthodontic applications was determined to be 490 °C for 15 minutes, resulting in relatively low plateau slope 13.73 GPa with high superelatic ratio 12.04, and maximum plateau strain of 7 %.
Performance of tri-tubular conical energy absorber under axial compression
Authors: Khalid Asad , Rohaizan S. M.
Published: March 2024

Quasi static axial compression loading on tri-tubular cone (TC) has been carried out using LS-DYNA finite element analysis method. Tri-tubular cones of three arrangements; the first arrangement (model TC-1) consists of cone heights of 50 mm, 75 mm and 100 mm where the inner cone is the maximum height. The second arrangement (model TC-2) consists of cone heights of 100 mm, 75 mm, and 50 mm where the outer cone is the maximum height. The third arrangement (model TC-3) consists of three cones of the same height of 100 mm. Cone semi vertex angle of 20o was maintained for all tri-tubular cones tested. Materials used for this research are glass, jute and jute-glass/epoxy. Crashworthiness analyses were performed to investigate the effect of material used, and tri-tubular cone arrangement on peak load. Crush efficiency, and absorbed energy were drawn and discussed. Failure mechanism of the fractured specimens was also discussed. Effect of number of layers and fiber stacking sequence were also investigated. Results show that the cone arrangement TC-3 gives better performance than the cone arrangement TC-2 followed by the cone arrangement TC-1. Maximum load obtained by tri-tubular cone type TC-3 was found higher 7.09% and 14.96% than TC-2 and TC-1 respectively for glass/epoxy. Material saving was achieved by using tri-tubular cones of different heights under compression. Material used has significant influence on the absorbed energy. Failure mode of tri-tubular conical energy absorber was presented and discussed.
Active suspension for all-terrain vehicle with intelligent control using artificial neural networks
Authors: Hamza Anis , Dridi Issam , Bousnina Kamel , Ben Yahia Noureddine
Published: March 2024

The automotive industry focuses on developing advanced protection and stability control systems, particularly for suspension and steering, to enhance vehicle comfort, luxury, and safety. This research presents an intelligent controller for all-terrain vehicle (ATV) suspension systems based on Artificial Neural Network (ANN) technology. The controller leverages ANN capabilities to optimize system performance. MATLAB simulations were conducted to evaluate its effectiveness under various disturbances. A comparative analysis compared the ANN regulator, classic ANFIS regulator, and passive performance in different disturbance scenarios. The simulation results demonstrate exceptional performance of the ANN-based controller in displacement reduction, speed, acceleration, and robustness. The controller effectively mitigates disturbances, enhancing overall suspension system performance. These findings highlight the advantages of employing ANN technology in ATV suspensions. This research contributes to intelligent control systems advancement in the automotive industry, specifically in ATV suspensions. The demonstrated improvements have the potential to enhance passenger comfort, vehicle stability, and safety across terrains. By implementing ANN-based controllers, automotive manufacturers can optimize suspension systems, leading to improved vehicle performance. Several indicators, including RMSE, MRE, and R2, were utilized to test and validate the models. The R2 values for the three quality parameters ranged from 0.989 to 0.999, indicating a high level of consistency in the predictions made by the ANN, a "5-12-1" structure is employed. The results of this study add to the expanding body of knowledge endorsing the efficacy of ANNs in simulating and optimizing quarter-vehicle dynamics.
Co-simulation approach for computational aero-acoustic modeling: Investigating wind-induced noise within two-way radio microphone ports cavity
Authors: Hairudin Wan Masrurah , Mat Mohamed Nur Hidayat , Ooi Lu Ean , Ismail Norilmi Amilia
Published: March 2024

Wind-induced noise (aeroacoustic) can cause problem with any outdoor microphone applications, notably impacting the performance of telecommunication mobile. One prominent source in two way radios is the microphone port cavity. In this article, the noise characteristics behaviour is studied at scale-up of microphone port cavity through computational aero-accoustics (CAA) numerical simulation and experimental test. This research aims to investigate the wind-induced noise (aeroacoustic) generated inside the microphone port cavity at various wind orientation angles (wind direction) and distance radii, r. A direct-hybrid co-simulation CAA method, utilizing the LES-WALE (Wall-Adapting Local Eddy-viscosity) and Ffowcs William-Hawking (FW-H) models, is employed to obtain the near-field noise source and far-field noise patterns inside a microphone port cavity. The simulations are conducted using the scFLOW2Actran software. Richardson extrapolation and Grid Convergence Index (GCI) are applied to evaluate the accuracy of the grid independency in numerical simulations.The findings reveal that the leading edge, centre and trailing edge are the primary noise sources and generations inside a microphone port. The study indicates that the noise level in the microphone port cavity is characterized by low frequency noise.The results indicates that at an observation of angles of 0° and distance radii of 0.2 m, the wind noise level is higher compared to other orientation angle and distance radii. This can be attributed to the proximity to the noise source  at this location. The directivity pattern of noise propagation exhibits a typical dipole pattern observed at observation angles of 0° to 45°. Numerical results align well with the experimental results from the wind tunnel test, demonstrating the feasibility of the proposed approach for flow-acoustic coupling application. This research holds significant value for engineers as it provides a comprehensive understanding of the physical phenomena involved in microphone port design.
Liberalization of the Health Sector and Fulfillment of the Right to Health: How does international law respond to this condition?
Authors: Saraswati Dhanny , Zulfa Zaeda
Published: March 2024

Liberalization in the health sector is one of the problems faced, not only by Indonesia, but also by various countries in Southeast Asia. This condition emerged as one of the impacts of the agreement of Southeast Asian countries in free trade, where services became part of the ASEAN Economic Community which in the end massively liberalized trade in services. However, in the health services sector, problems arise in Indonesia, both in terms of policies, governance, certification, and competency standards which are considered to be obstacles in efforts to liberalize trade in services, especially in the health sector. This study aims to analyze aspects of international law and human rights in the liberalization of health services.
Pros and Cons of Application of Extraterritorial Jurisdiction in International Law: Various Practices in Southeast Asian Countries
Authors: Aryudhanty Desvia Dwi , Yen Lam Thong , Chan Nai Jan
Published: March 2024

Extraterritorial Jurisdiction (ETJ) is the legal ability of the government to exercise authority beyond its normal limits. Any authority can claim the ETJ over any external territory they wish. However, for the claim to be effective in the outer region (except by the exercise of force), it must be agreed either with the jurisdiction in the outer region, or with the jurisdiction covering both areas. When not eligible, the ETJ is usually referred to as an agreed jurisdiction, or what will be referred to as an ETJ claim. At the implementation level, the application of the principle of extraterritorial jurisdiction will certainly encounter a number of obstacles, especially when dealing with the jurisdictions of other countries. The principle of extraterritorial jurisdiction may not be fully implemented because a country cannot in fact exercise its power in the territory of another country even though it has jurisdiction over a legal act, legal subject/object, and certain legal interests.
The Practice of National Passive Principles in Illegal Fishing Disputes of Indonesian Citizens in Australian Waters
Authors: Imrona Imrona
Published: March 2024

Fishing in the territorial waters of another country carried out without the permission of the country concerned is a crime called illegal fishing. Many cases of illegal fishing occur in the country's border areas, as happened in the northern waters of Australia which is the border between Indonesia and Australia. Border areas between countries are prone to fishing actions carried out without the permission of the relevant country. Traditional Indonesian fishermen arrested by Australian government authorities for illegal fishing are then tried under Australian law. But basically the Indonesian Government has the authority to ask the Traditional Fishermen to be tried under the applicable law in Indonesia. Such actions are referred to as passive national principles, which are among the principles recognized by international law. In the application of this principle is also based on the agreement established between the two countries, in this case the extradition treaty. The research method used by the author is a quantitative research method that produces descriptive results with an analytical descriptive literature study approach sourced from previous research and books.
Interpol’s Efforts Against Human Trafficking by Non-Procedural Migrant Worker Networks in East Nusa Tenggara: Leveraging Legal Assistance Treaties
Authors: Aulya Layla Putri , Arifin Ridwan , Sabri Zaharuddin Sani Ahmad , Nte Ngaboawaji Daniel
Published: March 2024

This paper delves into the proactive measures adopted by Interpol to counter the pervasive issue of human trafficking, focusing specifically on the activities of non-procedural migrant worker networks in East Nusa Tenggara. Human trafficking remains a grave violation of human rights globally, with vulnerable migrant workers often falling victim to exploitation and abuse. In regions like East Nusa Tenggara, where such networks operate with relative impunity, concerted efforts are necessary to dismantle their operations and bring perpetrators to justice. Interpol plays a crucial role in this endeavor by leveraging legal assistance treaties to enhance international cooperation in combating transnational crimes, including human trafficking. Through these treaties, Interpol facilitates information exchange, joint investigations, and coordinated law enforcement actions among member countries, thereby strengthening the collective response to this multifaceted challenge. In East Nusa Tenggara, where the complexities of jurisdiction and cross-border activities complicate law enforcement efforts, Interpol's involvement becomes particularly significant. By collaborating with local law enforcement agencies and leveraging its global network of resources, Interpol can identify, disrupt, and dismantle the networks involved in human trafficking. This paper will explore the mechanisms through which Interpol utilizes legal assistance treaties to support investigations, apprehend perpetrators, and rescue victims of human trafficking in East Nusa Tenggara. Additionally, it will assess the effectiveness of these strategies in mitigating the impact of non-procedural migrant worker networks and advancing the overarching goal of eradicating human trafficking. Through a comprehensive analysis of Interpol's efforts in this context, this paper aims to contribute to the discourse on international law enforcement cooperation and the fight against human trafficking.
Indonesia vs. Malaysia: The Battle for Border Territory Resolved
Authors: Ruhana Siti , Karim Tun Abdul
Published: March 2024

This paper provides a comprehensive analysis of the resolution of the longstanding border dispute between Indonesia and Malaysia. The study delves into the complex dynamics of this conflict, offering insights into its historical context, the key issues at stake, and the eventual resolution reached between the two nations. The Indonesia-Malaysia border dispute has been a contentious issue for decades, marked by conflicting territorial claims and occasional tensions between the two neighboring countries. Rooted in historical and geopolitical factors, the dispute has encompassed various regions along the land border, including areas rich in natural resources and strategic importance. This paper examines the factors that fueled the dispute, ranging from historical grievances to economic interests and geopolitical considerations. It explores how these factors influenced the negotiation process and shaped the positions of both Indonesia and Malaysia. Central to the analysis is the discussion of the diplomatic efforts and mechanisms employed to address the dispute. From bilateral negotiations to third-party mediation, the paper evaluates the effectiveness of different approaches in facilitating dialogue and fostering cooperation between the two nations. Furthermore, the paper highlights the role of international law and norms in guiding the resolution process. It assesses how principles of territorial sovereignty, boundary delimitation, and peaceful dispute resolution were applied in reaching a mutually acceptable agreement. Finally, the study discusses the outcome of the resolution and its implications for Indonesia, Malaysia, and the broader region. It examines the terms of the agreement, including any concessions made by either party, and considers the potential impact on bilateral relations, economic development, and regional stability. By providing a nuanced analysis of the Indonesia-Malaysia border dispute and its resolution, this paper contributes to a deeper understanding of interstate conflicts and the mechanisms available for their peaceful resolution in Southeast Asia.
Usability Analysis of Digital-Based Agricultural Product Marketing Platform at Farmers Level in Region V, Bogor Regency
Authors: Budiastuti Evrina , Ritchi Hamzah , Deliana Yosini
Published: March 2024

Purpose:  This study examines the usability of a digital platform called Kiosagri.com. This study needs to carry out as one of the solutions to overcome the limited accessibility of agricultural product promotion through the use of a digital platform that is expected to have usability. Therefore, this study aims to analyze the usability of digital-based agricultural product marketing platforms at the farmer level in Region V of Bogor Regency.Methods:  This research employed a mixed method with an explanatory sequential design. The intended audience for the census of respondents was farmers who had utilized the Kiosagri.com platform. Data analysis was done on 32 respondents during the quantitative phase using descriptive statistics. Ten respondents were chosen purposefully for descriptive qualitative analysis during the qualitative phase.Results:  According to the results, the Kiosagri platform is very user-friendly. It is achieved as a result of several beneficial aspects connected to the benefits perceived by users, such as ease of use, suitability of design, and features offered by Kiosagri.Novelty:  In this study, a different way to measure the usability of digital platforms for agricultural products marketing is applied, namely by using the explanatory sequential design by conducting usability testing using descriptive statistics through the use of questionnaires and explaining the results further using descriptive qualitative through in-depth interviews which both methods are suitable for testing user experience and usability in the agricultural sector. The results of this study will be useful for the government in implementing digital marketing of agricultural products.