bluuebunny/crossref_metadata_2025 huggingface dataset:
A Study on Development and Validation of Digital Literacy Measument Tool
Authors: Park Jinah , Kim Na Hye ,   Taegu Science University Defense Security Institute
Published: July 2024

The purpose of this study was to develop a digital literacy measurement tool to verify reliability and validity. The subjects of this study were 285 university students in Gyeonggi-do, and the reliability and validity of the measurement tools were tested. As a result of exploratory factor analysis, confirmatory factor analysis, Cronbach‘ s α coefficient, Pearson correlation coefficient and t-test, it was proved that the reliability and validity of the digital literacy measurement tool composed of 5 sub-factors (total 15 items) were appropriate. The digital literacy measurement tool developed in this study is expected to be used as an effective indicator to accurately grasp the digital literacy level of all university students including SW non-majors and to explore the effectiveness of SW convergence education provided by universities. Furthermore, based on the results of this study, development of SW convergence education program based on reinforcement of SW learning motivation and participation promotion for all students considering psychological factors is proposed.
Effect of Size on Cooling Kinetics of Spherical Samples from Different Grades of Aluminum
Authors: Nizomov Z. , Turakhasanov I. , Saidzoda R. Kh. , Nematov D.
Published: July 2024

The influence of the size of spherical specimens of different aluminum grades (A0, A5, A6, AB98, and A5N) on their characteristic cooling times and heat transfer coefficients in a wide temperature range has been investigated. It is shown that the cooling process of spherical samples in all cases is carried out by convective and radiative mechanisms of heat exchange with the environment, possessing characteristic times. The values of characteristic times of cooling due to convection and radiation are estimated. Using experimental data on the cooling rate of samples and theoretically calculated values of their heat capacity according to the Neumann-Kopp rule, the coefficients of radiant and convective heat transfer as a function of temperature are determined. It was compared with the regularities of the effect of sample size on the thermophysical properties of cylindrical samples. It is found that spherical specimens cool faster than cylindrical specimens of the same mass, and the heat transfer coefficients are larger. During the experiment, it turned out that the convective heat transfer coefficient lies in the range of 10-20 W/m2·K.
Condition Synthesis and Performance of Alkali-Activated Composites Incorporating Clay-Based Materials – A Review
Authors: Kaze Rodrigue Cyriaque
Published: July 2024

Studies over the years have shown that alkali-activated composite (AAC) binders are viable alternatives to conventional Portland cement (PC) composites. However, the increasing interest in AACs for the construction of various infrastructures has called for a need to find alternatives to the conventional materials used in their production. Various types of 1:1 clay which are available in different forms in different parts of the world can be used as an aluminosilicate source in the production of AACs. However, compared to the use of conventional aluminosilicate sources such as slag and fly ash, there is limited understanding, research, and application of AAC incorporating clay-based materials. Thus, this comprehensive review was carried out to explore and discuss various properties of AACs made with clayey materials. Discussions were made on both the fresh and hardened properties of clay-based AACs. Discussions are held regarding the effects of various alkaline solution types, their concentrations, the combination of various alkaline activators, the fine aggregate to binder ratio, the alkaline solution to binder ratio, and the curing temperature and duration. However, in terms of the hardened properties, more focus was placed on durability performance as these properties are critical to the behaviour of the AACs in various environments.
The Effectiveness of Relaxation Meditation on Anxiety in Third Trimester Pregnant Women at Embung Fatimah Regional Hospital Batam, Indonesia: A Randomized Controlled Trial
Authors: Gusmadewi  , Sunesni  , Elwitri Silvia  , Marlena
Published: July 2024

Anxiety during the third trimester of pregnancy can negatively impact both maternal and fetal well-being. Relaxation meditation has shown promise as a non-pharmacological intervention for anxiety reduction. This study aimed to evaluate the effectiveness of a structured relaxation meditation program on anxiety levels in third-trimester pregnant women at Embung Fatimah Regional Hospital Batam, Indonesia. A randomized controlled trial was conducted with 60 third-trimester pregnant women. Participants were randomly assigned to either an intervention group (n=30), receiving a six-week relaxation meditation program, or a control group (n=30) receiving standard prenatal care. Anxiety levels were assessed using the State-Trait Anxiety Inventory (STAI) at baseline, after the intervention (week 6), and at a four-week follow-up. Significant reductions in both state and trait anxiety scores were observed in the intervention group compared to the control group at week 6 (p<0.001) and at the four-week follow-up (p<0.01). No adverse events were reported in either group. Relaxation meditation is an effective and safe intervention for reducing anxiety in third-trimester pregnant women. This study supports the integration of relaxation meditation into routine prenatal care at Embung Fatimah Regional Hospital Batam and potentially other healthcare settings.
Games in Enhancing Productive Skills for EFL Students
Authors: Munawarah Siti , Hayati Sifa , Fitriyani Windi , Rahman Erwan , Mieyrandha Mieyrandha , Maharani Laura Melinda , Tegar Jonathan , Fauzi Iwan
Published: July 2024

This article explores the use of games as an effective pedagogical strategy for improving EFL students' speaking and writing skills. Conducted through a literature review, the study examines various games used in language classrooms and their impact on language learning outcomes. The importance of language as a communication tool and the need to enhance students' English-speaking and writing skills are emphasized. Teachers' role in leveraging innovative game-based learning strategies is highlighted, focusing on games like Zepeto, board games, spinning wheel games, and guessing games. These games offer engaging, real-time language practice, promoting fluency, confidence, and motivation. The research method used by this study was literature reviews. Findings indicate the efficacy of these games in enhancing speaking and writing skills for the EFL students. The study underscores the value of game-based learning in making language education more enjoyable and effective. Concluding, the study advocates for the integration of game-based strategies in language classrooms to boost students' interest, engagement, and proficiency in English.
Assessing 4C Competencies in English Language Learners: Tools, Challenges, and Implications
Authors: Anggraini Yanti , Setiawati Setiawati , Sari Ika Purnama
Published: July 2024

In the era of globalization and the Fourth Industrial Revolution, 21st-century skills—Critical Thinking, Communication, Collaboration, and Creativity (4C)—are essential for learners' success in dynamic and competitive environments. This study evaluated 4C competencies in English language learners, focusing on comprehensive assessment tools, challenges, and implications. The literature review method was used to analyze various peer-reviewed sources, highlighting effective tools such as rubrics, performance-based assessments, and technology-enhanced platforms. Challenges include the subjective nature of evaluating creativity and the necessity for extensive teacher training. The study emphasized the need for integrating 4C skills into English language curricula to create dynamic learning environments that enhance both language proficiency and essential life skills. The findings suggested that adopting innovative assessment strategies and providing ongoing professional development for educators are crucial. Ultimately, assessing and cultivating 4C competencies will contribute to developing adaptable, innovative, and effective communicators, preparing students for the complexities of the 21st century. Continuous research and investment in this area are vital for advancing English language teaching and learning.
COMBINED EFFECTS OF LATERAL SPREADING AND SUPERSTRUCTURE INERTIA
Authors: Khosravifar Arash
Published: July 2024

The seismic behavior of a RC pile with a diameter of 0.25 m subjected to liquefaction-induced lateral spreading was investigated using a shake table experiment that was conducted at the University of California, San Diego by Professor Ahmed Elgamal and Dr. Ahmed Ebeido (Ebeido and Elgamal 2019). A sinusoidal motion was applied at the base of a model that was inclined by 4 degrees. The loose and dense sand layers liquefied during the test, resulting in a permanent lateral spreading displacement of approximately 0.4 m (Figure E1). The pile was subjected to the combined effects of inertial loads from the acceleration of the superstructure mass and kinematic loads from the overlying nonliquefiable, dry crust. The dynamic responses of the soil and pile were analyzed to evaluate the relative contributions of inertial and kinematic loads during critical cycles (i.e., at the time of maximum inertia and the time of maximum pile strains). It was found that large pile strains developed after liquefaction was triggered. Large pile strains (and curvature) were recorded at a shallow depth within the crust (0.49 m) and a deeper location below the loose liquefiable sand (1.89 m). Large pile strains at shallow depth were found to be correlated with the inertial loads applied in the upslope direction. These upslope inertial loads were resisted by downslope crust loads, indicating an out-of-phase interaction. In contrast, large pile strains that occurred at deeper locations were correlated with downslope inertial loads and were accompanied by zero crust load, indicating that there was no lateral spreading force during the downslope inertial cycles. A gap at the downslope area in front of the pile formed because the soil displacements exceeded the pile displacements during the cyclic phase after liquefaction was triggered. The lack of crust load during the downslope inertial cycles is attributed to the pile head outrunning the crust displacement and causing the pile to be pushed into the gap at the downslope area in front of the pile. The interaction of inertia and kinematics appears to be a site- and project-specific phenomena. Therefore,the findings of this study—and, specifically, the lack of lateral spreading crust load during downslope inertial cycles—should be considered in design as one possible scenario in addition to the scenarios from several other studies that suggest combining the inertial loads with a lateral spreading force (e.g., Boulanger et al. 2007, Turner et al. 2016, Souri et al. 2022, Tokimatsu et al. 2005, Cubrinovski et al 2017).
Karakteristik Biologi dan Preferensi Pakan Spodoptera frugiperda (Lepidoptera: Noctuidae) pada Berbagai Jenis Pakan
Authors: Hidayah Vania Utami , Afifah Lutfi , Surjana Tatang , Subagyo Vani Nur Oktaviany
Published: July 2024

Fall Armyworm (Spodoptera frugiperda) is one of the invasive insect species that cause yield loss in corn crops. This pest can attack other crops, such as food crops, vegetables, legumes, and weeds. This research aims to determine the host suitability of S. frugiperda on several types of host plants. The method used was an experimental method with a single-factor completely randomized design (CRD) consisting of four treatments in five replications using four different types of host plants: maize (Zea mays L.), soybean (Glycine max L.), papaya (Carica papaya L.), and chinese kale (Brassica oleraceae var. acephala). The highest percentage of S. frugiperda attack intensity in the choice test was obtained in the treatment with chinese kale leaves (70%) and the lowest in the papaya leaves treatment (20%). In the feeding activity of 3rd instar larvae, the treatment of maize leaves and soybean leaves showed the fastest feeding activity at 11:00 and 12:00, while in the feeding activity of 4th instar larvae, the treatment of maize leaves and chinese kale leaves showed a fast larval feeding activity with a feeding duration of ± 5-10 minutes. Fall Armyworm can also attack other host plants such as soybeans and chinese kale. It can even endure by feeding on papaya leaves, which are typically used as a botanical pesticide. It is essential to step up surveillance against this pest because there are so many additional possible hosts for it.
Pengaruh Tata Letak Sistem Irigasi Tetes dan Jenis Media Tanam Terhadap Pertumbuhan dan Hasil Tanaman Pakcoy (Brassica Rapa var. Chinensis L.)
Authors: Nisa Jamilatun , Romdhonah Yayu , Rohmawati Imas , Ritawati Sri
Published: July 2024

Irrigation is the most important part of plant cultivation to meet the water needs for plant growth and yield. However, irrigation is a common problem in dryland areas. The drip irrigation system is an alternative to solve the problem of water droplets that can improve water use efficiency. One consideration when using drip irrigation is designing the irrigation layout so that the water supply to each plant is uniform. This study evaluated two layout layouts of drip irrigation systems for pok choi plants (Brassica rapa var. chinensis L.) with different planting media. The method used a split-plot design with 2 factors. Variation of drip irrigation system (V) was the main plot which consists of 2 levels, namely variation 1 (V1) and variation 2 (V2). Media type (M) served as a subplot comprised of 3 levels, namely soil (M0), soil+charcoal husk (M1), and soil+cocopeat (M2). The feasibility of these two drip irrigation system designs included drip discharge values, water uniformity coefficient, water distribution uniformity, and storage efficiency. Based on the evaluation of the feasibility of drip irrigation system design, design 1 (V1) gave better values for the average value of drip discharge (0.16 l/minute), uniformity coefficient (99.71%), uniformity of water supply (82.11%), and storage efficiency (73.89 %). The layout of the drip irrigation had a significant effect on the height of pok choi plants on 1 and 2 WAP.
Pemetaan Penggunaan Lahan Pertanian di Kota Kupang menggunakan Penginderaan Jauh
Authors: Rambu Ngana Frederika
Published: July 2024

Every year, the districts and city of Agriculture Services in the Nusa Tenggara Timur (NTT) province report the area of agricultural land use to the NTT Provincial Agriculture and Food Security Service. The agricultural land area was measured manually by the field officers of the City and Districts of Agriculture Services. This research aims to map and measure the area of agricultural land use using remote sensing. Kupang City was used as a case study location. The remote sensing data used in this research was Landsat-9 satellite imageries from the U.S. Geological Survey in August 2022. These images were then classified based on classes paddy rice fields, non paddy rice fields, and nonagricultural fields. The classification was carried out using the Random Forest algorithm on QGIS software. This classification was based on the training sites of each land use type in Kupang City taken with GPS. The result of the research is a map of agricultural land use in Kupang City. This research shows that remote sensing allows the NTT provincial Agriculture and Food Security Service to determine the location and calculate the area of the agricultural land use in the NTT Province region quickly and accurately without a field survey. To map the agricultural land use in NTT more effectively using remote sensing, the Landsat image should be selected on the planting time. In addition, it is very important to ensure that the area on the administrative map used to crop the Landsat image corresponds to the actual area.
Eksplorasi Jamur Entomopatogen, Dari Beberapa Rizosfer Tanah, Dengan Insect Bait Method
Authors: Sudiarta I Putu , Syahbana Raditya Darmawan , Yuliadhi Ketut Ayu , Suputra I Putu Wirya , Gargita I Wayan Diksa
Published: July 2024

This study aims to identify the types of entomopathogenic fungi obtained from the exploration results of the insect bait method in rhizosphere soil samples from several locations in the Bedugul area, Bali. The exploration results showed differences among the three soil samples, where the Pakcoy cultivation soil sample showed infected insect baits with Metarhizium sp. fungi. In contrast, in the Danau Buyan and Bedugul Botanical Garden soil samples, symptoms of infestation were not infected by fungi. Koch's postulate test confirmed the presence of entomopathogenic fungi in the Pakcoy cultivation soil sample, which was later identified morphologically and microscopically as Metarhizium. This study contributes to understanding the ecology of entomopathogenic fungi in the context of biological pest control, especially in sustainable agriculture.
Distinct gut microbiomes in Thai patients with colorectal polyps
Authors: Intarajak Thoranin , Udomchaiprasertkul Wandee , Khoiri Ahmad Nuruddin , Sutheeworapong Sawannee , Kusonmano Kanthida , Kittichotirat Weerayuth , Thammarongtham Chinae , Cheevadhanarak Supapon
Published: July 2024

BACKGROUND

Colorectal polyps that develop via the conventional adenoma-carcinoma sequence [e.g. , tubular adenoma (TA)] often progress to malignancy and are closely associated with changes in the composition of the gut microbiome. There is limited research concerning the microbial functions and gut microbiomes associated with colorectal polyps that arise through the serrated polyp pathway, such as hyperplastic polyps (HP). Exploration of microbiome alterations associated with HP and TA would improve the understanding of mechanisms by which specific microbes and their metabolic pathways contribute to colorectal carcinogenesis.

AIM

To investigate gut microbiome signatures, microbial associations, and microbial functions in HP and TA patients.

METHODS

Full-length 16S rRNA sequencing was used to characterize the gut microbiome in stool samples from control participants without polyps [control group (CT), n = 40], patients with HP (n = 52), and patients with TA (n = 60). Significant differences in gut microbiome composition and functional mechanisms were identified between the CT group and patients with HP or TA. Analytical techniques in this study included differential abundance analysis, co-occurrence network analysis, and differential pathway analysis.

RESULTS

Colorectal cancer (CRC)-associated bacteria, including Streptococcus gallolyticus (S. gallolyticus ), Bacteroides fragilis , and Clostridium symbiosum , were identified as characteristic microbial species in TA patients. Mediterraneibacter gnavus, associated with dysbiosis and gastrointestinal diseases, was significantly differentially abundant in the HP and TA groups. Functional pathway analysis revealed that HP patients exhibited enrichment in the sulfur oxidation pathway exclusively, whereas TA patients showed dominance in pathways related to secondary metabolite biosynthesis (e.g. , mevalonate); S. gallolyticus was a major contributor. Co-occurrence network and dynamic network analyses revealed co-occurrence of dysbiosis-associated bacteria in HP patients, whereas TA patients exhibited co-occurrence of CRC-associated bacteria. Furthermore, the co-occurrence of SCFA-producing bacteria was lower in TA patients than HP patients.

CONCLUSION

This study revealed distinct gut microbiome signatures associated with pathways of colorectal polyp development, providing insights concerning the roles of microbial species, functional pathways, and microbial interactions in colorectal carcinogenesis.
Homicide-Suicide : A Systematic Review in Indian Scenario
Authors: Myageri Rajshekhar , Patil Anand Patil , Pattanashetty Nitin Pattanashetty , Namrata Balaraddiyavar Namrata Balaraddiyavar
Published: July 2024

'Homicide-suicide' is the death of both the victim and the assailant. These violent acts involve the killing of the most intimate partner or family members, followed by suicide. The circumstances that provoke may vary from person to person, the most common being family and marital disputes. The dyadic death cases are of immense importance as they reflect on the mental health of society, the financial problems of the country, or the breakdown of family relations. An increase in such cases in India points towards undetermined psychological stress and depression in the population. Identifying and creating awareness in the population can help mitigate such violent crimes.
A Cross Sectional Study on Estimation of Stature from Head length in the Population of Telangana
Authors: K Srinivasulu  , Punyala Kavya Sree  , Gaddam Sreenidhi Yadav  , Meka Sahasra Reddy  , Managali Meghana  , Butta Ramesh
Published: July 2024

Determination of stature from head length is equally significant like determining from other body parts. A cross sectional study on estimation of stature from head length was conducted in the population of Hyderabad, Telangana at Malla reddy institute of medical sciences. Study population consists of 154 members, who include 75 males and 79 females, participants were in the age group of 18-23 years. Data was collected from participants after obtaining informed consent. Measurement of head length was taken from the top of vertex to the bottom of the chin in centimeter (cm) scale. A linear regression formula was obtained to correlate head length and height. Linear regression equations for total study population is Y=77.59 + 4.135( HL), male population is Y=118.5 + 2.46 (HL) and female population is Y=159.71 + 0.062 (HL). Statistical results of the study, R2 = 0.333, Standard error = 0.475 and P value <0.0001 reveals statistical significance of the study. Separate formulae for male and female individuals will give more accurate results. ±5 cm difference in the stature was observed in the study population with the derived equation. Height is aproximately 8 times the head length in Female population and 7.5 times in male population in the study group.
An Autopsy Based Study of Suicidal Deaths in Gandhi Hospital, Secunderabad
Authors: Mukkera Tejaswini  , Iqbal Banu Hussain  , Khazi Mudabbir Ahmed  , Krupal Singh  , Sultan Rizwan Ahmad
Published: July 2024

Suicide is a serious global public health issue. Suicide refers to the act of intentionally causing one’s own death. The aim of the study is to find the pattern of suicidal deaths and to identify the high-risk groups. The       study was carried out in the Department of Forensic Medicine and Toxicology, Gandhi Medical College, Secunderabad, Telangana. This was based on the observation of 200 deaths due to     suicides in 18 to 45 age group during the study period January 2020 to July 2021. It is observed that majority of victims were aged between 18-25 years (33.50%) and married (61.50%). Males (77.00%) are more victims as compared to females. The leading motive behind suicide was emotional factors (32.5%) and most commonly adopted method to commit suicide was hanging (41.50%). Health education, counselling, timely crisis intervention either by medical or social methods will reduce the number of suicide victims.
Study Of Pattern Of Death In Unclaimed Dead Bodies Autopsied In A Tertiary Care Hospital – An Autopsy Based Cross Sectional Study
Authors: R. Senthil Kumar  , A. Gokulakrishnan
Published: July 2024

Article 6 of universal declaration of Human Rights states that “Everyone has the right to recognition everywhere as a person before the law”. Identification means the determination of the individuality or recognition of that person or dead body based on certain physical characters unique to that individual. It may be complete or partial. Complete identification means the absolute fixation of the individuality of a person, while partial identification means ascertainment of only some facts like race, sex, age and stature. Visual identification is not reliable in majority of the cases, therefore two important identification marks should be noted in live and dead cases. The description should contain anatomical land mark, size; colour either raised or not raised from surface and if no distinct mark is available left thumb impression may be taken. Other points which are considered in establishment of identity are race, religion, sex, age, and other age related changes, acquired peculiarities like mole, tattoos, and congenital deformity. In decomposed and mutilated cases accurate identification is needed for establishment of corpus delicti after homicide. The identification of cadavers is a  crucial  issue  in  forensic  setting, but   the   official  extent  of  this  problem  is  still  poorly  known  in  most countries.   The fact that an  underestimated  problem  of  unclaimed decedents exists  can  be seen from the very small number of published articles  on  the  topic.
ARSITEKTUR POST-MODERN
Authors: Aini Qurratul , Hayatulla
Published: July 2024

Kebangkitan revolusi industry yang dimulai pada awal abad XIX telah menyebabkan terjadinya perubahan dalam skala besar pada pola hidup dan pola pikir masyarakat pada saat itu. Perubahan ini turut memberikan pengaruh besar dalam perkembangan arsitektur dan membawa perubahan tersendiri pada beberapa karya arsitektur. Dipelopori oleh Le Corbusier, arsitektur modern dengan tiga tahap perkembangannya mulai ditinggalkan pada tahun 1960-an. Sebagai penyempurnaan, lahirlah arsitektur post modern yang digagas oleh Charles Jencks. Beberapa bangunan yang mengaplikasikan design arsitektur post modern diantaranya adalah gedung bank nasional Georgia yang terletak di Tbilisi,Bangunan Hotel Asia yang terletak di Surakarta serta Museum Tsunami Aceh yang terletak di Banda Aceh. Arsitektur post modern selalu berusaha mempertahankan bangunan lama yang memiliki nilai sejarah tinggi dengan cara membuatnya berdampingan dengan bangunan baru sehinga keduanya akan saling mendukung. Meskipun tidak sepopuler gaya arsitektur lainnya, arsitektur post modern masih terus berkembang dan digunakan hingga saat ini.
GELANGGANG OLAHRAGA PIDIE JAYA
Authors: Hidayah Taufiq , Joni Muhammad
Published: July 2024

Di Kabupaten Pidie Jaya banyak melahirkan atlit-atlit yang berprestasi dan pernah beberapa kali ikut dalam ajang POPDA dan PORDA sehingga perlu direncanakan sebuah Gelanggang Olahraga yang memenuhi standar tingkat Nasional dan dapat menjadi pusat kegiatan olahraga bagi remaja dan dewasa dengan kapasitas penonton 3.000 orang. Gelanggang Olahraga Pidie Jaya tergolong tipe B dengan fasilitas lapangan bola basket, bola volly, bulutangkis, futsal, tenis, dan sepaktakraw. Luas area bebas 40 meter x 25 meter dengan tinggi 12.5 meter. Penggunaan tema Arsitektur High-Tech pada bangunan direncanakan dengan penggunaan struktur bangunan yang didominasi oleh material baja dan material-material fabrikasi lainnya. Sehingga dapat menyelaraskan dengan perancangan bangunan bentang lebar. Analisa yang dilakukan ialah lingkungan, fungsional dan bangunan yang dikaitkan dengan Arsitektur High-Tech, sehingga menghasilkan konsep desain yang seimbang antara standar dan tema yang diharapkan. Luas lahanperancangan Gelanggang Olahraga Pidie Jaya yaitu 23.000 m² dengan KDB sebesar 60% (13.800 m²), KLB sebesar 2,4 (55.200 m²), dan GSB) 6 m. Massa bangunan menggunakan pola massa tunggal. Dengan difasilitasi lapangan olahraga in door, ruang tribun penonton, ruang fitness center, ruang tamu VIP, mushalla, kios souvenir, café/resto, dan area lapangan olahraga out door. sehingga bangunan ini nantinya dapat mewadahi fasilitas olahraga yang berstandar nasional.
SABANG OCEANARIUM
Authors: Teuku Reza Maulana  , Fatimah Azzahra
Published: July 2024

Sabang merupakan kepulauan yang terletak di Provinsi Aceh dan menjadi salah satu tujuan wisata yang diminati, salah satunya karena potensi keanekaragaman biota lautnya. Potensi tersebut selaindijadikan sebagai objek wisata bahari juga dapat dijadikan sebagai sumber ilmu pengetahuan serta sebagai media riset untuk perkembangan pendidikan. Oceanarium merupakan salah satu wadah yang mengakomodasi kegiatan rekreatif dan edukatif melalui perkenalan keanekaragaman biota bawah laut. Lokasi berada di jalan utama Kota Sabang menuju ke Nol Kilometer, Pantai Iboih, Sabang yang terletak 25 meter diatas permukaan laut, dengan kondisi lahan berkontur. Oceanarium termasuk dalam tipologi museum dalam kategori science berupa Aquarium, Marine Museum. Pendekatan tema arsitektur hi-tech bertujuan agar desain yang dihasilkan aman melalui penerapan sistem teknologi yang canggih serta nyaman. Analisis yang digunakan adalah analisis fungsional, analisis tapak dan analisis bangunan, sehingga dapat menghasilkan konsep desain yang simbang. Penerapan desain pada Sabang Oceanarium adalah menganalogikan bentuk biota laut, dengan menampilkan kekuatan struktur rangka bidang dan struktur kabel, pewarnaan yang cerah, transparan, dan didominasi penggunaan lempengan baja dan kaca. Luas lahan yaitu 33.055 m2. Terdiri dari 2 lantai. Luas lantai dasar bangunan adalah 9.219 m2 dan luas keseluruhan lantai bangunan adalah 14.347 m2. Kapasitas pengunjung pada waktu puncak adalah 260 orang dengan periode kunjungan sebanyak 3 (Tiga) kali dalam sehari. Bangunan Bermassa Tunggal dengan menggabungkan area edukatif dan rekreatif, konservasi, pengelola dan maintanance. Adapun fasilitas yang tersedia adalah akuarium utama, akuarium laut dangkal, akuarium laut dalam, akuarium hiu, kolam sentuh, kolam atraksi, area pameran, audio visual, cafetaria, laboratorium, kantor pengelola dan area servis.
Rimegepant
Authors: Gysling Etzel
Published: July 2024

N/A
Inteligencia Emocional y su Incidencia en el Rendimiento Académico de Estudiantes de Básica Media
Authors: Chinchay Vergara Lina Lorenza , Casquete Díaz María Eugenia , Álvarez Peralta Sonia Zoila , Quintana Sánchez Cecibel Ernestina , Plúa Quijije Elizabeth Jacqueline , Mendoza Zambrano Mariana Elizabeth
Published: July 2024

Esta investigación tuvo como objetivo principal determinar la relación que existe entre inteligencia emocional y rendimiento académico de los estudiantes de cuarto grado de una Escuela de Educación Básica de la Parroquia San Carlos, Ecuador, 2023. El diseño utilizado fue descriptivo correlacional, considerando como grupo de estudio a 90 estudiantes, quienes representan la población total (muestra censal), siendo estos estudiantes de cuarto grado de educación básica. Se aplicó la técnica de cuestionario (BarOn), la cual ayudó a medir el grado de inteligencia emocional de los estudiantes. Los resultados obtenidos y analizados estadísticamente denotaron la relación r = 0,782 de la inteligencia emocional con el rendimiento académico. Esta correlación mostró que la relación es positiva de las variables, teniendo un grado de correlación en un nivel moderada. Resultando Sig. p=0,000 cuando p< 0,05. Como conclusión se determinó que estos resultados permiten determinar la relación significativa entre variables, rechazando la hipótesis H0 y aceptando la hipótesis H1.
Electrical Effects of GNP/Ag/SA Conductive Epoxy on Copper Flexible Substrate
Authors: Mohd Azli Salim  , Hazril Hisham Hussin  , Nor Azmmi Masripan  , Adzni Md. Saad  , Mohd Zaid Akop  , Chew Kit Wayne  , Chonlatee Photong  , Feng Dai
Published: July 2024

Various efforts to improve the performance of printed conductive ink have been conducted in order to obtain its full performance potential. This includes the investigation on the effect of conductive filler particle size towards the electrical conductivity performance. This study focuses on the product condition and electrical performance of GNP/AgNP/SA as hybrid conductive filler components by varying the particle size of only one the filler component, which is GNP. The GNP/AgNP/SA formulation with organic solvent was used by preparing three samples utilizing different GNP particle sizes of 5 µm and 25 µm. The purpose of this experiment is to collect data on the electrical conductivity of ink when employed in circuits and determine the best formulation of conductive ink. The obtained results revealed differences between the inks produced using 5 µm and 25 µm of GNP sizes. The resistivity of the 5 µm samples were was lower than 25 µm samples. The GNP of 5 µm recorded the lowest resistivity of 2.48 x 10-5 Ω.m as compared to 2.63 x 10-5 Ω.m recorded by 25 µm samples. The lower resistivity value indicates that the conductive ink formulated using 5 µm of GNP size has better electrical conductivity performance. The results signify that by using different particle sizes of only one component of hybrid conductive fillers produced different conductive ink performance, especially the electrical conductivity.
Impact of Chilled Air Nozzle Types on Surface Integrity in Drilling of Aluminum Alloy 1050
Authors: Zailani Zainal Abidin  , Wan Nur Fakhira Wan Zakariya  , Roshaliza Hamidon  , Muhammad Salihin Zakaria  , Hasnulhadi Jaafar  , Norshah Afizi Shuaib  , Azmi Harun  , Maziri Morsidi
Published: July 2024

Using cutting fluid in the machining process for Aluminum Alloy 1050 is advantageous as it helps mitigate the effects of temperature generated during cutting. It can shorten tool life and impair the quality of machine parts. Despite its benefits, cutting fluids has several disadvantages, such as high expenses, potential environmental harm, and user health risks. This research evaluates the effects of green cutting conditions, particularly nozzle types, on the metallurgical properties of the material. Their impacts on tool wear, X-Ray Diffractometer (XRD) pattern, Full Width at Half Maximum (FWHM), crystallite size, and hardness during the drilling process were investigated. The findings indicate that using chilled air with dual nozzles for cooling and lubrication is highly effective, resulting in less tool wear and a relatively purer crystalline structure of the material compared to other conditions. These results emphasize the importance of controlling cutting conditions, especially nozzle types, to produce high-quality parts with improved metallurgical properties.
Exploring the Influence of Geometrical Parameters on Piezoelectric Vibration Energy Harvester: From Experiment to Simulation Investigation
Authors: Izzuddin Zaman  , Muhammad Izzat Badrin  , Muhammad Mohamed Salleh  , Bukhari Manshoor  , Amir Khalid  , Nasrul Amri Mohd Amin  , Mathan Sambu  , Ahmed A. Abuhatira  , Yuwaraja Samy
Published: July 2024

Vibrational energy has recently become one of the most sought-after targets and an ideal source of energy because of its widespread existence, and one of the effective methods of storing vibrational energy is to use piezoelectric. Nevertheless, the design of piezoelectric vibrational energy harvesting systems continues to be a challenging task, as the behavior of various subsystems influences the energy harvested. Most typical strategies concentrate on improving the piezoelectric system, while the effects of other subsystem in particular the substrate layer, are either simplified or not considered at all. Therefore, the paper is obliged to investigate a method to design a substrate layer for a piezoelectric vibrational energy harvesting system that is optimized to boost energy efficiency. In this study, a piezoelectric PZT-5A patch attached to a substrate cantilever beam with proof mass at the free end was modelled using finite element analysis (FEA) in ANSYS Workbench which was later verified through experiments. The proof mass, beam length, and PZT position were used as variable parameters in the studies. The preliminary results of FEA demonstrate that a 180 mm beam length with a 17 g proof mass and PZT-5A positioned in the middle of the beam produced a maximum voltage output of 4.75 V at 9.8 Hz. These results are in agreement with the experimental results even though there are discrepancies in terms of the peak width owing to damping. Thus, the implications of these findings lead to two conclusions: 1) the reliability of FEA as a tool for identifying the optimum design and cost-saving options and 2) a better understanding of how the geometric parameters of the substrate layer influence the performance of vibration energy harvesters.
Coal Bottom Ash as an Eco-Friendly Cement Substitute in Self-Compacting Concrete: Properties and Potential
Authors: Rahimah Embong  , Mohammad I. AlBiajawi
Published: July 2024

In numerous nations, the utilization of coal as an energy source for thermal power plants and manufacturing operations has increased in recent decades, which has led to an increase in coal consumption. The growth of the world's population is reflected in the increasing use of cement in the construction industry and in the rising production of concrete worldwide. These two occurrences contribute significantly to the increase in carbon dioxide (CO2) emissions and coal ash discharges, both of which are harmful to the surroundings. Coal-fired power plants produce industrial byproducts such as coal-bottom ash (CBA) that could be incorporated into self-compacting concrete (SCC) to provide sustainable building materials and encourage the use of byproducts. Consequently, the objective of this experimental study is to investigate the effects of CBA as a cement substitute in SCC on the fresh and mechanical properties. Six various mixtures were prepared by replacing the cement used in the production with different amounts of CBA (0%, 10%, 20%, 30%, 40%, and 50%, respectively). The various properties of all mixtures, including fresh and mechanical properties of concrete, were analysed in accordance with EFNARC and ASTM standards. For the fresh concrete properties of the SCC, a slump flow test, an L-box test, and a V-funnel test were performed. For the mechanical properties, compressive strength, tensile strength, and water absorption tests were performed. The result showed that CBA can be use as cement replacement up to 20% exhibited to improve the strength of SCC Mixture.
Consolidation of a High Plasticity Dredged Marine Clay Incorporating Single Drainage Path With Granular Geowastes
Authors: Chee-Ming Chan  , Siti Farhanah S.M Johan  , Tan Poi Cheong  , Mohammad Zawawi Rosman
Published: July 2024

The present study simulated a dredged marine clay backfill in standard oedometers, where the examination was carried out on a consolidation process with a single drainage path using pavement milling waste and palm oil clinker. It was found that the dissipation of excess pore water from the soil increased with the thickness of the drainage layer, which facilitated a more effective drainage rate. Also, palm oil clinker was observed to be prone to crushing at higher applied stresses, leading to possible clogging of the pores and diminishing consolidation rate. However, the samples’ settlements were not observed to be particularly influenced by the drainage material used. Overall, both by-product wastes could be potentially reused as a drainage layer for field backfilling of dredged marine clay in the preloading stage, simultaneously introducing second lives to the waste materials in beneficial civil engineering applications.
Examining the Efficacy of Finite Element Method for Detecting Damage in Aluminium Structures
Authors: Asraar Anjum  , Meftah Hrairi  , Abdul Aabid  , Norfazrina Yatim  , Maisarah Ali
Published: July 2024

Current engineering structures are effectively utilizing monitoring techniques based on electromechanical impedance (EMI) by employing piezoelectric sensors the EMI method is employed to monitor structural health of these systems. This study focuses on performing numerical analyses for structural health monitoring in healthy and damaged aluminium structures. For numerical analysis a finite element-based program in ANSYS commercial tool was utilized to model the beams made of undamaged and damaged aluminium. Additionally parametric studies were done to determine the impedance signal in aluminium structures with Lead-Zirconate-Titanate (PZT). The results obtained indicate that the finite element (FE) modeling with EMI technique is valuable for health monitoring of structures with impedance for healthy and damaged aluminium structures.
Resistivity of Graphene/Silver Hybridization Conductive Ink on Bending Test
Authors: Ismaniza Ismail  , Mohd Azli Salim  , Nor Azmmi Masripan  , Adzni Md. Saad  , Mohd Zaid Akop  , Chew Kit Wayne  , Chonlatee Photong
Published: July 2024

In recent years, there has been a growing demand for stretchable electronic devices, such as wearable sensors and displays. Many researchers have been working on the development of stretchable conductive ink (SCI), which can maintain its electrical conductivity even when stretched or deformed. Graphene nanoplatelet (GNP) hybridization conductive ink is a promising material for stretchable electronics due to its high electrical conductivity and excellent mechanical properties. However, the resistivity of GNP ink on flexible substrates can be affected by various factors, such as the bending of the substrate. This paper aims to investigate the resistivity of hybridization conductive ink between GNP and silver (Ag) on a flexible substrate under different bending conditions. The study was carried out on the formulation and performance of GNP hybrids using GNP and silver flakes (Ag). The GNP hybrid ink was printed on a copper substrate using a mesh stencil method and cured at 250 °C for an hour. The resistivity was evaluated at room temperature before and after the bending tests in terms of electrical characteristics. The result of the resistivity value before performing the bending test was acceptable due to the lowest resistivity value in the range of 0.963 x 10–5 to 1.293 x 10–5 Ω.m at room temperature. The finding exposed that the resistivity values for each of the three samples of bending tests significantly changed after 1000 cycles. Overall, the results revealed that this hybrid conductive ink has good resistivity and performs with acceptable reliability. In future work, it is recommended that the conductive ink be printed on a more flexible substrate and the evaluation of temperature dependence can also be made more comprehensively.
Performance Evaluation of Edge-Based Segmentation Methods for Electrical Tree Image Analysis in High-Voltage Experiments
Authors: Mohd Annuar Mohd Isa  , Mohamad Firdaus Azahari  , Mohamad Nur Khairul Hafizi Rohani  , Baharuddin Ismail  , Afifah Shuhada Rosmi  , Mohamad Kamarol Jamil  , Noor Syazwani Mansor  , Abdullahi A. Mas’ud  , Firdaus Muhammad-Sukki
Published: July 2024

This research evaluates the performance of edge-based segmentation methods in analysing two-dimensional (2D) electrical tree images obtained during high-voltage (HV) electrical tree experiments. Non-uniform illumination in 2D optical images poses challenges in accurately extracting and measuring the original treeing image. Edge segmentation emerges as a promising solution to precisely distinguish tree structures from the insulation background within the image. Cross-linked polyethylene (XLPE) samples were subjected to HV stress for real-time propagation observation, followed by extraction and segmentation of treeing images using edge-based operators. The findings emphasize the superiority of the Roberts edge operator in accurately detecting electrical trees, showcasing the highest average accuracy of 97.01% and 99.58% specificity, while also demonstrating relatively high sensitivity. Moreover, the Roberts method provide much precisely measures the propagation length and width than conventional measurement method, closely approximating the actual tree measurements. This research emphasizes the significance of accurate segmentation for investigating electrical tree propagation in XLPE materials and provides recommendations for future research, especially in HV XLPE cable manufacturing.
Machine Learning Approaches for Malware Classification in Android Platform: A Review
Authors: Howida Alkaaf  , Farkhana Muchtar  , Salmah Fattah  , Asraf Osman Ibrahim Elsayed  , Carolyn Salimun  , Hadzariah Ismail  , Farhan Masud
Published: July 2024

The rapid growth of Android applications has led to a continuous influx of Android malware. Numerous research has been undertaken to tackle that issue. Existing research has indicated that leveraging machine learning is a highly effective and promising approach for Android malware detection. This paper presents a review of Android malware detection methodologies that rely on machine learning. We commence by providing a brief overview of the background context related to Android applications, including insights into the Android system architecture, security mechanisms, and the categorization of Android malware. Subsequently, with machine learning as the central focus, we methodically examine and condense the current state of research, encompassing crucial perspectives such as sample acquisition, data pre-processing, feature selection, machine learning models, algorithms, and the assessment of detection effectiveness. The aim of this review is to equip scholars with a holistic understanding of Android malware detection through the lens of machine learning. It is intended to serve as a foundational resource for future researchers embarking on new endeavours in this field, while also providing overarching guidance for research endeavours within the broader domain.
Bibliometric Analysis of Trust in Named Data Networking: Insights and Future Directions
Authors: Athirah Rosli  , Suhaidi Hassan  , Mohd Hasbullah Omar
Published: July 2024

Trust plays a crucial role in the success and adoption of Named Data Networking (NDN), a data-centric communication paradigm. This paper presents a bibliometric analysis of research articles related to trust in NDN, aiming to provide insights into the current state of this research. Based on the conducted analysis, it was discovered that a total of 106 research papers pertaining to trust in NDN were published within the period of 2017 to 2023, as documented in the Scopus database. To better understand the present state of trust in NDN research and where the field is headed, four questions were formulated based on this topic . Several tools have been used in this study, including Microsoft Excel, OpenRefine, VOSviewer, Biblioshiny and Harzing’s Publish or Perish. The observed trend indicates a notable increase in the quantity of articles published in the NDN journal during the periods spanning from 2017 to 2018, as well as from 2021 to 2022. The analysis revealed that China emerged as the nation with the highest number of published works, closely trailed by the United States. We expect many more regions to explore NDN in the future, and as a result, our collective understanding of the Internet's path will grow. This bibliometric analysis serves as a valuable resource for researchers, providing an overview of the current state of trust research in NDN and guiding future investigations in this evolving field.