bluuebunny/crossref_metadata_2025 huggingface dataset:
Growing, Healing, Knowing, And Sharing: The Community Museum Of Traditional Medicine Of Huancollo, Bolivia Exhibition Review
Authors: Gottret Isabel
Published: January 2025

The community museum of traditional medicine is in the centre of Huancollo, in the Bolivian Altiplano. The building, a repurposed single large room made of adobe (fig. 1), is next to both the Andin Spa, a health facility for traditional Indigenous remedies, and the community’s meeting building. As an ayllu originario, Huancollo holds a status unique for Indigenous communities(1) in Bolivia, meaning that the community, though dependent on Tiwanaku municipality, practices a form of Aymara government based on rules, procedures and collective responsibilities (Ayllu Originario Huancollo, 2013).
Huancollo’s community museum was created through adhering to the Qhapaq Ñan( 2) network of community museums. Huancollo community museum gives us the opportunity to examine rootedness in three ways. The first are the literal roots, the plants collected and used by the comunarios, the community members, for healing. The second foundational roots are Huancollo’s role resisting the erasure of ancestral knowledge and preserving it through its healers. The third are the interdependent roots through which the museum was created, that is the present-day international heritage sector, and the precolonial roads and communications that have shaped Andin cultures and ecosystems for centuries. By examining the displays in the museum, I will analyse these three roots in the context of Huancollo and its museum.
The Feral Garden Of The More-Than-Panorama Museum
Authors: Deng Weiling , Velas Sara , Carlson Ruby , Banfill Jonathan
Published: January 2025

This essay relates the story of a panorama museum’s care and response to Los Angeles’ multi-layered urban development and surplus materials from its most understudied space :the back garden. Connected to the rear of LA’s Union Theatre, which houses the nineteenth-century Euro-American style Velaslavasay Panorama (VP), is a garden of thick, entangled plants, with stone paths snaking beneath string lights. As the visitor traverses the ‘jungle’, she glimpses architecture like the Pavilion of the Verdant Dream with a wooden door and ornamental lattices, and the green hexagonal Arulent Gazebo with a copper-tiled roof. The garden instantiates the ‘feral’ DIY LA art that the VP curators practice, transporting thevisitor from a site of virtual travel to a site of ‘rootedness’ in the moment. Centering on the concept of ‘feral’, this essay presents the Velaslavasay garden as an organic experimental part of the more-than-panorama museum.
Keywords: Feral art, painted panorama, heterotopia, neighbourhood, Los Angeles
TRAUMA PENETRANTE CERVICAL: RELATO DE CASO E REVISÃO DE LITERATURA
Authors: RUBI ANNA CAROLINA PAP
Published: January 2025

O trauma penetrante na região cervical é uma condição complexa e potencialmente fatal que requer uma
abordagem rápida e coordenada. O tratamento eficaz depende da identificação precoce das lesões, do manejo
adequado das vias aéreas e do sangramento e da intervenção cirúrgica quando necessário. A prevenção continua
sendo a melhor estratégia para reduzir a incidência desses eventos traumáticos e melhorar os resultados
para os pacientes. Este trabalho teve como objetivo relatar um caso de lesão penetrante cervical, e exemplificar
os aspectos clínico-epidemiológicos, achados diagnósticos, propostas terapêuticas, bem como manejo de suas
complicações, correlacionando-os com a literatura pesquisada.
INTRODUÇÃO AO GNU OCTAVE
Authors: Oliveira Tiago Menezes de
Published: January 2025

O minicurso “Introdução ao GNU-Octave” tem o objetivo de gerar no participante uma melhor familiaridade com o software ou um primeiro contato apresentando-lhe as funcionalidades mais básicas, porém de
GÊMEOS DIGITAIS
Authors: Silva Alisson Souza
Published: January 2025

Este e-book surge da pesquisa “Modelos e métodos para Gêmeos
Digitais (GD) objetivando o gerenciamento da segurança e da
produção na Construção Civil, integrando tecnologias digitais como
drones, IoT, Inteligência Artificial e BIM”, financiada pelo Edital
CNPq/MCTI/FNDCT 18/2021, a qual dá uma amplitude ao tema.
O Grupo de Pesquisa e Extensão em Gestão e Tecnologia das
Construções (GETEC) e o Laboratório de Estudos Avançados em Cidade, Arquitetura e Tecnologias Digitais (LCAD), ambos da
Universidade Federal da Bahia e o Grupo de Tecnologia
Computacional Aplicada à Construção Civil (TEC) da Universidade de São Paulo são responsáveis pela produção e desenvolvimento do projeto.
Este e-book apresenta o papel dos Gêmeos Digitais na construção
civil, especificamente no canteiro de obras, e como essa tecnologia
pode ajudar na superação de desafios tradicionais no setor.
Os Gêmeos Digitais possibilitam o acompanhamento, análise e
visualização de forma precisa e eficiente do status da construção,
sendo fundamental para ter subsídios à tomada de decisão quanto ao desempenho da obra. Esta tecnologia possibilita ainda a
detecção precoce de razões de baixa produtividade, aumento de
custos por retrabalho, atrasos no cronograma e riscos aos
trabalhadores, facilitando a comunicação efetiva de informações.
Nesse sentido, os Gêmeos Digitais têm grande potencial de
inovação disruptiva no setor, abrindo novas possibilidades de
colaboração entre equipes de diversas áreas.
Impact of water based nanofluids in heat exchanger type active solar PV cooling systems: A comparative CFD analysis
Authors: Vimukthi Vithanage  , Shen Hosan  , Hasith Perera  , Chanaka Galpaya  , Ashan Induranga  , Amalka Indupama  , Dasith Wijesekara  , Kaveenga Koswattage
Published: January 2025

Solar photovoltaic technology is a fast growing form of renewable energy with many positive factors such as low cost, environmental friendliness, energy independence, etc. But, one of the major drawbacks of solar photovoltaic technology is the less efficiency compared to other forms of renewable energy technologies. There are many factors affecting the efficiency of a solar PV system such as temperature, solar irradiance, material quality, reflection losses, cell design etc. Researchers are focusing on different aspects to control the above factors to improve the efficiency of solar PV systems. Solar photovoltaic cooling system is one such solution which can be used to control the operating temperature of solar photovoltaic cells. The most common coolant used in these systems is water due to its superior thermo physical properties. In this research we are focusing on improvement of the thermophysical properties of water using nanotechnology. This article presents a CFD (Computational Fluid Dynamics) analysis conducted for a heat exchanger type solar PV cooling system integrated with a solar photovoltaic panel for water based nanofluids mainly focusing on three metal oxide nanoparticles Al2O3, CuO, and TiO2. Initially the heat exchanger model was developed using Solid Edge 2022 software and the thermo physical properties were simulated using Ansys 2019 software for different water based nanofluids. The obtained results were analyzed comparatively with the performance of water as a coolant in the same heat exchanger system. The results conclude that metal oxide/water based nanofluids have comparatively better thermal properties than water and can be suggested as possible alternatives for water in closed loop heat exchanger applications.
Why digital transformation in fintech requires mainframe modernization: A cost-benefit analysis
Authors: Narasimha Rao Vanaparthi
Published: January 2025

This comprehensive analysis examines the critical role of mainframe modernization in driving digital transformation within the financial services sector. The article explores the current state of legacy systems in financial institutions, evaluating both the challenges and opportunities presented by modernization initiatives. Through detailed cost-benefit analysis, risk assessment, and examination of real-world implementation strategies, this research provides insights into successful transformation approaches. The article includes an in-depth case study of Citibank's modernization journey, highlighting key success factors and lessons learned. Additionally, it addresses future technological trends and market dynamics that will shape the evolution of banking systems, offering strategic guidance for financial institutions undertaking modernization initiatives.
Investigating the nutritional, antioxidant and antimicrobial properties of Tamarindus indica linn seed and pulp
Authors: Emmanuel Mensah  , Abigail Donkor  , Mercy Badu
Published: January 2025

This study seeks to investigate the nutritional (i.e proximate composition), antioxidant and anti-microbial properties of Tamarindus indica Linn seed and pulp. The proximate composition estimated during the study was analyzed by using standard AOAC methods. Ethanolic, aqueous and ethyl acetate extracts were prepared from seed and pulp powders of Tamarind. The tamarind seed was found to have a substantial protein value (17.51%) which means that it can be processed and used as a food supplement. Phytochemical screening of the samples revealed the presence of flavonoids and tannins in pulp and saponins in the seed which might validate the traditional uses of the plant in the treatment of various diseases. The antimicrobial activity of the extracts was evaluated using agar well diffusion and broth dilution assay. Ethanol, aqueous and ethyl acetate extracts of tamarind fruit pulp at different concentrations (100ppm, 50ppm, 25ppm, 12.5ppm) were used to scavenge DPPH free radicals. The standards: ascorbic acid and gallic acid were found to possess high antioxidant activity than the extracts in all the various concentrations for the DPPH assay and hydrogen peroxide assay respectively. 2, 2- diphenyl -1- picrylhydrazyl (DPPH) radical and hydrogen peroxide scavenging assays were used to investigate the tamarind seed’ and the fruit pulp. The results from the antioxidant assays show good antioxidant activities for the various extracts which might confirm the use of the plant in folkloric medicine.
Targeted cancer therapy using nanoparticles: Addressing biocompatibility, targeting efficiency and toxicity
Authors: Atharva Vishnu Patil  , Rushikesh Sudhakar Sapkal  , K R Biyani  , F A Shaikh
Published: January 2025

This study investigates the development of poly (lactic-co-glycolic acid) (PLGA) nanoparticles functionalized with folic acid for targeted cancer therapy. Dual drug loading of doxorubicin and curcumin enhanced therapeutic efficacy through synergistic action. Nanoparticles were characterized for size, zeta potential, drug release kinetics, and targeting efficiency. Results demonstrated high drug encapsulation efficiency (89% for doxorubicin and 82% for curcumin), sustained release under physiological conditions (48% over 48 hours at pH 7.4), and enhanced cytotoxicity (IC50 = 11.4 µg/mL) against folate receptor-expressing MCF-7 cells. This approach addresses key challenges in nanoparticle-based therapy, including biocompatibility, precise targeting, and minimizing systemic toxicity.
Enhancing financial cybersecurity: An AI-driven framework for safeguarding digital assets
Authors: Vinay Kumar Kasula  , Akhila Reddy Yadulla  , Bhargavi Konda  , Mounica Yenugula
Published: January 2025

As cloud computing continues to dominate the modern technological landscape, organizations face growing challenges in preventing data breaches and sophisticated cyber threats. The increasing complexity and scale of cloud environments require advanced security mechanisms to address evolving threats. This paper introduces "SecureCloudAI," a cutting-edge AI-driven security framework designed to fortify sensitive data within cloud infrastructures. SecureCloudAI leverages a hybrid approach that combines machine learning models like Random Forest and deep learning techniques, including Long Short-Term Memory (LSTM) networks, to detect, classify, and respond to potential security breaches in real-time. The system offers robust malware detection, network traffic analysis, and web intrusion detection while maintaining scalability and efficiency across large cloud environments. Experimental results demonstrate SecureCloudAI's high accuracy, with malware detection at 94.78% and network traffic classification at 90.92%, ensuring the system can handle both complex and emerging threats. This AI-driven solution marks a significant advancement in cloud security, providing organizations with an adaptive and scalable tool to safeguard their data against the ever-growing cyber threat landscape.
Effect of irrigation systems on the growth parameters of cowpea (Vigna unguiculata L. Walp) cultivars in N’Djamena city, Chad
Authors: Hamza A. Ousman  , Beunon Tchimbi  , Sabre Idriss Absakine  , Djamal Mahadi Mahamat
Published: January 2025

The study was conducted during the winters of 2021 and 2022 at the research farm of the Higher Teachers Training School of N’Djamena, Chad. The aim of the present investigation is to evaluate the growth and productivity traits of four cultivars of cowpea plant (white, black, red, and versicolor) in response to two different irrigation periods (3 and 6 days). The experiment is a factorial with four cowpea cultivars (White, Black , Red and versicolor) in the main plot in a Randomize Complete Block Design (RCBD) and irrigation intervals (3 and 6 days) as the subplot with three replications. Our data demonstrated that the black variety was much superior in leaf surface area (15942.37 cm2), wet weight (343.75 g), dry weight (96 g), number of pods (71.50), weight of pods (137.50 g), number of seeds (475), and total productivity was 2.47 tons/ha. On the other hand, the versicolor variety was superior in the plant height (197 cm), number of leaves (138.75), pod length (15.50 cm), number of seeds in the pod (8.25), while the white variety had the highest average weight for 100 seeds (26.30 g). The same results also, indicated that the irrigation rate for three days was better than that for six days in terms of plant height (162.75 cm), number of leaves (108.37), leaf surface area (12553.72 cm2), wet weight (309.37 g), dry weight (73.25 g), pod length (14.50 cm), weight of seeds per pod (72 g), number of seeds per plant (241.50) and the productivity was 1.29 tons/ha. Finally, the study suggests planting the black and versicolor varieties in N'Djamena city during winter season in order to get the maximum yield by surface irrigation every three days.
Evaluation of the physicochemical and nutritional characteristics of carp fish (Tilapia nilotica) from Lake Fitri in Chad
Authors: Djibrine Adoum Oumar  , Adama Sawadogo  , Hama Cissé  , Charles Parkouda  , Abdelsalam Tidjani  , Savadogo Aly
Published: January 2025

The carp fish (Tilapia nilotica) from lake Fitri in Chad is of significant commercial and economic interest both nationally and sub-regionally. However, the nutritional and physicochemical characteristics of this fish are not sufficiently documented. Thus, the present study aimed to carry out a nutritional and physicochemical characterization of the carp fish of lake Fitri. For this purpose, 100 fresh fish samples and 100 dried fish samples were used for the analyses. The water content of the fish samples was determined by drying in an oven and then the dry matter was deducted. The total ash content was quantified using the AOAC method. Quantification of total proteins was done by the Kjeldahl method. The lipid content was determined by the Soxhlet method. In addition, eight fresh fish samples were used for analysis of the amino acid composition of fish proteins by high-performance liquid chromatography (HPLC). The results obtained during this study show that the dry matter contents of fresh and dried fish were on average 20.79±2.84% and 28.12±1.79% respectively. The lipid and ash contents, relative to dry matter, were similar for the two types of fish with respective averages of 22.15±2.79% and 11.44±0.55% for fresh fish, 21.45±2.69% and 10.48±1.73% for dried fish. However, the average protein content was relatively higher in fresh fish with an average of 53.74±0.65% compared to 50.65±4.67% for dried fish. This study also revealed the presence of seventeen (17) amino acids with varying proportions in the fresh fish analyzed, including most of the essential amino acids. Thus, carp fish from lake Fitri could be used as a suitable food to improve the nutrition and growth of children.
The effect of salivary flow rate on the risk of bad breath (halitosis) during the Ramadan fasting
Authors: Raihan Saputra  , Bramantyo Bimantara Santoso  , Indeswati Diyatri
Published: January 2025

Background: Ramadan fasting is a significant religious practice for Muslims, characterized by abstinence from food and drink from dawn to sunset. This fasting routine induces physiological changes, including reduced salivary flow and altered salivary composition, which may compromise oral health. These changes increase the risk of halitosis and other oral issues due to decreased protective functions of saliva and the proliferation of volatile sulfur compound (VSC)-producing bacteria.

Objective: To review the relationship between reduced salivary flow during Ramadan fasting and the risk of halitosis, as well as to identify effective preventive measures to mitigate these effects.

Method: A literature review was conducted using secondary data from databases such as PubMed, ScienceDirect, and Google Scholar. The inclusion criteria focused on studies published between 2017 and 2025 that explored salivary flow rate, halitosis, and the effects of Ramadan fasting.

Results: The review highlighted a significant reduction in salivary flow, with rates decreasing up to 50% during fasting. This reduction leads to an increase in VSC levels, which are the primary contributors to halitosis. Additionally, fasting affects the composition of saliva, including lower levels of phosphate and calcium, further exacerbating oral health issues.

Conclusion: Ramadan fasting significantly influences oral cavity health by reducing salivary flow and altering its composition, increasing the risk of halitosis and other dental issues. Halitosis is primarily caused by volatile sulfur compounds produced by gram-negative anaerobic bacteria thriving in reduced saliva conditions.
Factors affecting weight gain among injectable contraceptive users in Indonesia: A Literature Review
Authors: Della Ayu Rahmadani  , Gatut Hardianto  , Ratna Dwi Jayanti
Published: January 2025

Weight gain is one of the common side effects reported by users of injectable contraception, particularly the DMPA type containing the hormone progesterone. This study aims to analyze the factors influencing weight gain among users of injectable contraception. Through a literature review, the study identifies those hormonal factors, duration of use, diet, physical activity, age, and psychological and social factors that play significant roles in weight changes. Progesterone can stimulate the appetite control center in the hypothalamus, increasing appetite and affecting body metabolism. The longer the duration of use, the more significant the weight gain. Lifestyle factors, such as high-calorie diets and low physical activity, exacerbate the hormonal side effects
PENGARUH WOM, VARIAN PRODUK, MEDIA SOSIAL, DAN HARGA TERHADAP LOYALITAS KONSUMEN HNI HPAI DI SOLO RAYA
Authors: Nurul Fadhilah  , Wiyadi
Published: January 2025

Dalam beberapa tahun terakhir, kesadaran sosial dan politik meningkat di kalangan konsumen Indonesia, yang terlihat dari fenomena boikot produk Israel. Hal ini menunjukkan bahwa konsumen tidak hanya mempertimbangkan harga dan kualitas produk, tetapi juga nilai moral dan etika dalam keputusan pembelian mereka. HNI HPAI, sebagai perusahaan yang berfokus pada produk halal, memiliki potensi pasar yang besar di wilayah Solo Raya, yang terdiri dari tujuh kabupaten/kota. Penelitian ini bertujuan untuk mempelajari pengaruh Word of Mouth (WOM), variasi produk, media sosial, dan harga terhadap loyalitas konsumen HNI HPAI di Solo Raya. Metode penelitian ini menggunakan pendekatan kuantitatif. Populasi dalam penelitian ini ialah seluruh konsumen HNI HPAI di Solo Raya. Metode pengambilan sampel penelitian ini ialah purposive sampling. Jumlah sampel penelitian ini ialah150 orang responden. Penelitian ini menggunakan data primer dalam penyusunannya. Teknik pengumpulan data penelitian ini dengan menggunakan kuesioner. Analisis data penelitia  ini menggunakan analisis Partial Least Square (PLS) untuk mengkaji datanya dan mengandalkan perangkat lunak SmartLPS 3.0 untuk menganalisis datanya. Hasil penelitian ini ialah bahwa Word of Mouth (WOM) berpengaruh positif dan signifikan terhadap loyalitas konsumen. Varian Produk berpengaruh positif dan signifikan terhadap loyalitas konsumen. Media Sosial tidak berpengaruh signifikan terhadap loyalitas konsumen. Harga berpengaruh positif dan signifikan terhadap loyalitas konsumen.
Experimental study on the performance of Peltier TEC12706 as a cooling and heating media
Authors: Sujono Sujono , Novianto Hernawan
Published: January 2025

The application of refrigeration spans a wide range of industries, from household needs to the oil and gas sector, employing various cooling methods. One rapidly developing approach is the use of Peltier devices, particularly the TEC1 12706 model, due to its compact size and widespread availability. It is essential for students to understand the application of Peltier technology, which necessitates the creation of practical tools for both educational and research purposes. Most existing research on Peltier devices focuses on air conditioning systems with fixed loads; therefore, it is imperative to explore their cooling and heating effects in dynamic environments. To address this gap, this study investigates the performance of Peltier modules as cooling and heating systems for moving media. A prototype of a cooling and heating module (heat pump) was developed using Peltier devices, and its performance was evaluated by varying the flow rates of hot and cold water (1.62/1.02; 1.2/0.8; and 0.9/0.68 L/min) and the number of operational Peltier elements (2, 4, 6). Calculations using the relevant formulas yielded the Coefficients of Performance (COP): COPc = 0.45, COPh = 1.37, and COPtot = 1.82. The results revealed that the cooling performance coefficient is lower than both the heating and total performance coefficients. Additionally, variations in flow rates and the number of installed Peltier devices showed minimal impact on cooling and heating performance coefficients.
Ergonomic working posture analysis on highway construction work using the OWAS method
Authors: Munanda Muhammad Arif , Iqbal Mohd. , Dirhamsyah M.
Published: January 2025

Road construction work has a high risk of injury due to nonergonomic work postures, such as hunched and twisted postures. Such injuries negatively impact workers’ health and can also lead to decreased productivity, higher medical costs, and delayed project completion. This study is important to conduct because of the lack of attention to ergonomics in the construction sector, especially in Indonesia, which results in an increased risk of work accidents and musculoskeletal injuries. Using the Ovako Working Posture Analysis System (OWAS), this study aims to analyze work postures in various road construction activities and identify work positions that have the potential to cause injury. The results of OWAS observations and analysis show that several main jobs, such as road construction (AC 4 = 63.6%), asphalt leveling with screws (AC 4 = 78.6%), and narrow side casting (AC 3 = 21.4%; AC 4 = 42.9%), have a high risk of poor posture. This study suggests ergonomic interventions such as posture training and the use of heavy equipment to reduce the risk of injury and improve work efficiency. The conclusion of this study is expected to provide an overview of the postural distribution of road construction workers, as well as identify the riskiest work postures, so that effective recommendations can be proposed to improve work safety and productivity.
Analysis of worker posture of Make-Up Artist by Standard Nordic Questionnaire method and Rapid Entire Assessment
Authors: Asda Cut Lirma Saputri , Hasanuddin Iskandar , Husni Husni , Firsa Teuku
Published: January 2025

Working posture is one of the factors that can influence work productivity because working with an abnormal posture can cause ergonomic problems, especially muscle injuries in workers. This research aims to analyze the worker posture of Make-up Artists (MUA) in Meukek District, South Aceh Regency. The analysis was carried out using the (SNQ) method to identify musculoskeletal complaints and (REBA) with the help of Ergo fellow software to assess worker posture. The research results   showed   that   as   many   as   80%   of   MUA   workers experienced complaints of musculoskeletal, with the most frequent complaints in the waist, shoulders, and neck. The work posture score of MUA workers is categorized as high risk (REBA score 11) in several activities, such as when cleaning the face and applying eyelashes. Risk factors that cause unergonomic work postures include long work duration (2-3 hours per client), with dynamic body positions. Lack of ergonomic work facilities. Based on the research results, several solutions are recommended to improve MUA work posture, including providing solutions for good body posture when working and designing ergonomic work chairs so that they can help MUA maintain optimal body posture while working and reduce risk musculoskeletal. By having work chairs that suit the design, it is hoped that it can improve the comfort and health of MUA workers and reduce the complaints they have been experiencing.
Fuzzy logic-PLC-based controller for water treatment simulator system
Authors: Dewi Astrie Kusuma , Labatar Gilbert , Hamdani Chalidia Nurin , Wardhana Asepta Surya
Published: January 2025

The constant demand for clean water is critical for both consumption and daily activities. A water pH control system is essential for regulating and determining the concentration of acid and base values in water. Research projects often employ a Programmable Logic Controller (PLC) control system with various control methods. This serves as the backdrop for the design of a water treatment simulator, which utilizes a fuzzy logic control system. Fuzzy logic control is a reliable method that produces effective and accurate output values. Experiments conducted on the designed water treatment simulator demonstrate this. Factors influencing the relationship between the solution pump response time and the normalized water pH results are the concentrations of the pH-UP and pH-DOWN solutions. The water treatment simulator is a lab-scale water pH control system simulation tool using a fuzzy logic control mode. It uses an Outseal PLC microcontroller, a pH sensor to measure pH, a DC pump, and a solenoid valve to control the output flow. The experimental results show a significant relationship between the initial pH value of the water measured and the response time of the solution pump. Data analysis shows a positive correlation where the further the pH concentration value of the water is from the normal pH state, the higher the response time value. Factors influencing the relationship between the solution pump response time and the normalized water pH results are the concentration of the pH UP and pH DOWN solutions. The concentration of the solution is set for a pH UP of 12.2 and a pH DOWN solution of 2.2.
Harnessing Light-Emitting Diode technology for cutting-edge Photovoltaic module characterisation
Authors: Sara Ira Devi , Jasman Fikrel , Hafidh Hafidh , Mubarak Amir Zaki
Published: January 2025

Significant advancements in Light-Emitting Diode (LED) technologies, including the availability of high-power LEDs at reduced costs, have rendered them a highly desirable and dependable solar simulator. However, there are still challenges in designing LEDs as solar simulators to evaluate the characteristics of specific solar modules across different technologies and sizes, particularly regarding spectral composition and spatial uniformity of irradiation. This work seeks to develop a prototype LED solar simulator capable of generating uniform light with stability of at least 90% (class C) throughout an illumination area of 54 cm × 67cm for laboratory instructional applications. The employed procedures encompass the selection of high-power LED bulbs, thermal management, electrical design, prototype fabrication, and performance assessment. The International Electrotechnical Commission (IEC) 60904-9:20 standard delineates the performance criteria for solar simulators and serves as a framework for constructing LED solar simulators. The study's results demonstrate that the LED solar simulator prototype has been successfully constructed and is categorized as class C, exhibiting a light non-uniformity and stability level of 10%. The capacity to delineate the current and voltage of a 50 cm × 30 cm small solar module under specified irradiance and temperature circumstances may be attained with a mean absolute error percentage of 0.01 and a root mean square error of 0.21. The hexagonal configuration of the LED array offers advantages for light design, including modularity and ease of expansion to achieve a broader illumination area. This arrangement can serve as an invaluable instrument to enhance solar energy research and maximize the performance of photovoltaic devices under regulated conditions.
Material and process parameter optimization for dimensional accuracy in Fused Deposition Modeling 3D printing
Authors: Yaqin Rizqi Ilmal , Siahaan Juniawan Preston , Tumpu Mula , Prakoso Bagas , Hermawan Ade , Luthfiani Febi , Barokah Barokah , Kurniawan Ahmad
Published: January 2025

The production of complex machine components requires advanced and accurate techniques. Achieving optimal quality through 3D printing involves carefully examining the process parameters. However, many studies have not thoroughly explored the impact of these parameters on parts produced using Fused Deposition Modeling (FDM) 3D printing. This study evaluates how process parameters and material variations affect the dimensional accuracy of printed parts. The study focuses on input variables such as material type, infill density, infill pattern, and raster angle. Using the fractional L9 Taguchi method, the optimal settings identified were PLA+ material, 80% infill density, an infill grid pattern, and a 0° raster angle, resulting in a 1.39%-dimensional deviation and an S/N ratio of -3.29 dB. ANOVA analysis reveals material type as the most significant factor, contributing 49.81% to performance. These findings, complemented by statistical analyses, can guide decision-making in industrial applications and serve as a reference for selecting FDM 3D printing settings related to dimensional accuracy to print components in the industry.
Modeling the effect of bullet velocity and composite fiber orientation on the ballistic impact strength of Eglass/isophthalic polyester composites
Authors: Fahmi Fariz Rifqi Zul , Hermawan Harry , Hanggara Fuad Dwi
Published: January 2025

Numerical simulation has been widely used as a cost-effective and practical solution to understand phenomena previously determined only through experiment. One example is ballistic impact simulation using the finite element method. The simulation of ballistic impact was used to determine the effect of fiber orientation and bullet velocity on the ballistic impact strength of E-glass/isophthalic polyester. The analysis and simulation process were conducted using ANSYS Workbench v19.2 software. The simulation involved firing a 9 mm FMJ Parabellum bullet with a mass of 6.98 grams at a composite panel measuring 100×100×0.57 mm with 12 layers at specified velocities. This study varied fiber orientation ([±45°] and [0°, 90°]) and bullet velocities (300, 500, and 800 m/s), using symmetrical laminate arrangements. The simulation results showed that the E-glass/isophthalic polyester composite with a fiber orientation of [±45°] has 16.51% higher ballistic strength compared to the [0°, 90°] fiber orientation. The highest ballistic impact strength for the [±45°] fiber orientation occured at 500 m/s, surpassing the 300 m/s and 800 m/s velocities by 12.92% and 43.81%, respectively. The Wen model was used for the validation process, and the error values between the computed and modeling results for the E-glass/isophthalic polyester composite ranged between 1.62% and 20.64%.Isophthalic polyester, E-glass, composite laminate, explicit dynamic, ballistic impact.
Cascade flow rate-temperature control system design based on PID controller using direct synthesis tuning method
Authors: Pradana Mochamad Rizky , Aristoni Deni , Triyanto Roni Heru , Yuliatin Umi , Budi Suka Handaja
Published: January 2025

Cascade control is one of the multi-loop control schemes that aim to increase the performance of closed-loop control systems. Temperature control on the outlet of a plate heat exchanger often from suffers errors in the control variable and designated set point, so it is necessary to use cascade control in order to stabilize output temperature and reduce the disturbance. The Proportional Integral Derivative (PID) controller in conjunction with the direct synthesis tuning method is used due to ease of implementation and to modify the second-order process model and become the first-order process model, simplifying the model. In cascade control, the flow rate control is designated as the secondary loop, while the temperature control functions as the primary loop. The PID controller model is designed with direct synthesis tuning on the cascade flow rate temperature control, resulting a proportional gain of 2.15%, of 1.976 s, and τd of 0 seconds on the flow rate control loop. Whereas on the temperature control loop, the proportional gain is 13.23%, is 66.3 s and the τd is 7 seconds. The transient responses from cascade flow rate temperature control from Simulink are rise time (tr) = 106.7 seconds, settling time (ts) = 183 seconds, and maximum overshoot = 0%. Based on this parameter, the controller generates Process Variable (PV) responses from master control that can reach the Set Point (SP) without overshoot, maintain a steady state, and reduce the disturbance from slave control within 20 seconds of the response increasing from the steady state condition
Curve Fitting Kurva Tegangan Keluaran Sensor GP2Y0A02YK untuk Unjuk Kerja yang Lebih Akurat
Authors: Priyanto Agung , Buntoro Irawan  , Titik Rahmawati  , Ari Cahyono
Published: January 2025

Sensor dalam Internet of Things (IoT) dan Wireless Sensor Networks (WSN) untuk berbagai keperluan seringkali memerlukan kalibrasi ulang. Datasheet yang menyertai sensor biasanya menampilkan tabel keluaran sensor dengan nilai-nilai minimum, tipikal dan maksimum. Artinya, terdapat toleransi sebesar nilai-nilai yang masih diperbolehkan oleh pabrik pembuatnya. Untuk sensor dengan tegangan keluaran analog biasanya ditampilkan dengan bentuk grafik. Jika keluarannya adalah grafik berbentuk kurva tidak linier, dibutuhkan pencocokan kurva untuk memperoleh persamaannya. Dalam penelitian ini akan dilakukan pencocokan kurva menggunakan metode jumlah galat kuadrat terkecil menggunakan matriks. Persamaan kurva hasil pencocokan kurva ini diperlukan untuk pengolahan data atau jika diperlukan untuk memprediksi variabel tetap jika variabel bebas diketahui. Salah satu sensor yang memiliki kurva tegangan keluaran tidak berbentuk garis lurus adalah sensor jarak keluaran Sharp, yakni seri GP2Y0A02YK. Menurut datasheet, sensor ini dapat dimanfaatkan untuk mengukur jarak mulai 20 cm sampai dengan 150 cm. Grafik tegangan keluaran pengukuran jarak mulai 20 cm sampai 150 cm tersebut berbentuk kurva melengkung. Dengan adanya kalibrasi menggunakan pencocokan kurva ini diharapkan akurasi dari pengukuran sensor dan pengolahan data keluarannya akan semakin meningkat
IMPLICATIONS OF THE ISRAEL - IRAN CONFLICT ON COMMODITY-BASED INVESTMENT AND PORTFOLIO DIVERSIFICATION
Authors: Pandin Maria Yovita R , Nurrochmah Aliatus , Rahmawati Septiana Rozzi
Published: January 2025

This study examines the effects of the Israel-Iran conflict on commodity-based investments and portfolio diversification on a global scale. The primary aim of this research is to assess how the conflict influences commodity investments and portfolio diversification strategies. The study adopts a mixed-methods approach, integrating both quantitative and qualitative analyses. The quantitative analysis utilized secondary data, including geopolitical ratios and crude oil prices, sourced from the geopolitical risk index and Investing.com. On the other hand, the qualitative analysis involved distributing questionnaires via Google Forms to selected participants, with the primary criterion being their status as investors. The results of hypothesis testing showed that none of the proposed hypotheses were supported. These findings suggest no significant relationships between the variables analyzed: the Israel-Iran conflict does not significantly impact portfolio diversification, portfolio diversification does not significantly influence commodity-based investments, and the Israel-Iran conflict does not have a meaningful effect on commodity-based investments. The study concludes that, within the context of this research, the examined variables do not demonstrate a statistically significant relationship.
PENGARUH TERAPI TOUCH AND TALK TERHADAP KECEMASAN ANAK DI RUANG FLAMBOYANT RSUD KOTA TANJUNGPINANG
Authors: Julantika Astrid , Pujiati Wasis , Arianingsih Tri , Julantika Astrid
Published: January 2025

Anak di Indonesia yang akan menjadi sasaran dalam program pembangunan kesehatan berjumlah 9.259.388 anak dengan masing-masing laki –laki dan perempuan berjumlah 4.767.072 anak dan 4.492.316 anak. Jumlah tersebut merupakan jumlah yanh tidak sedikit untuk mengupayakan anak-anak tersebut menjadi anak-anak yang memiliki kualitas baik. Untuk mendapatkan kualitas yang baik dalam membina anak-anak ini perlu dukungan dari berbagai pihak, mulai dari keluarga, masyarakat, termasuk tenaga kesehatan yang menangani masalah kesehatan pada anak. Banyak anak menolak diajak ke rumah sakit, apalagi menjalani rawat inap dalam jangka waktu yang lama. Peralatan medis yang terlihat bersih dirasakan cukup menyeramkan bagi anak-anak. Dampak tersebut dapat terjadi kecemasan pada anak. Kecemasan (Anxietas) dapat diartikan sebagai suatu respon perasaan yang tidak berdaya dan tidak terkendali. Salah satu untuk menurunkan kecemasan pada anak adalah dengan terapi touch and talk.. Tujuan penelitian ini untuk mengetahui pengaruh terapi touch and talk terhadap kecemasan anak di Ruang Flamboyant  RSUD Kota Tanjungpinang. Metode Penelitian ini adalah kuantitatif dengan desain penelitian ini penelitian eksprimental  Jumlah sampel 23 responden dengan teknik accidental sampling. Alat pengumpulan data ialah lembar SOP dan Lembar kuesioner. Analisa data menggunakan uji paired t test dengan signitifikan ? 0,05. Hasil Penelitian uji paired t test nilai p value 0,000 (?0,05), bahwa ada pengaruh terapi touch and talk terhadap kecemasan anak di Ruang Flamboyant  RSUD Kota Tanjungpinang Kesimpulan penelitian ini adalah terapi touch and talk berpengaruh terhadap penurunan tingkat kecemasan anak yang menjalani hospitalisasi.
PENTINGNYA	EDUKASI	SEKSUAL	DALAM	KESEHATAN REPRODUKSI REMAJA BERBASIS GENDER
Authors: Nurhayati Nurhayati , Khairunnisa Khairunnisa , Assyifa Rumaisha , Karera Anggi Indah
Published: January 2025

Masa remaja adalah fase transisi kritis yang ditandai oleh perubahan fisik, emosional, dan sosial yang signifikan, termasuk perkembangan seksual yang membutuhkan edukasi yang tepat dan berbasis gender. Permasalahan utama dalam penelitian ini adalah kurangnya pemahaman remaja mengenai seksualitas yang sehat dan bertanggung jawab, serta peran orangtua yang belum optimal dalam memberikan bimbingan berbasis nilai agama yang kuat. Kondisi ini membuat remaja sering mencari informasi dari sumber yang kurang kredibel atau mengalami kebingungan terkait nilai-nilai yang benar. Penelitian ini menggunakan metode deskriptif kualitatif dengan pendekatan wawancara mendalam terhadap beberapa keluarga yang memiliki remaja sebagai subjek penelitian. Penelitian ini mengeksplorasi pandangan orangtua dan metode mereka dalam memberikan edukasi seksual, khususnya yang berbasis nilai agama yang dianggap penting bagi keseharian remaja. Hasil penelitian menunjukkan bahwa walaupun sebagian besar orangtua menyadari pentingnya edukasi seksual, tidak semuanya merasa nyaman atau memiliki cukup pengetahuan untuk mendiskusikan topik tersebut secara terbuka dengan anak-anak mereka. Sementara itu, remaja sering kali bingung saat informasi dari luar rumah tidak sesuai dengan nilai-nilai yang diajarkan di keluarga. Penelitian ini menyimpulkan bahwa keterlibatan aktif orangtua dalam memberikan edukasi seksual berbasis nilai agama sangat penting, dengan dukungan pelatihan yang tepat agar mereka dapat membantu remaja mengambil keputusan yang sehat dan bertanggung jawab terkait seksualitas.
ANALISIS PRODUK LAYANAN RAWAT INAP BERDASARKAN STRATEGI STP (SEGMENTING, TARGETING, POSITIONING) DAN MARKETING MIX DI RUMAH SAKIT HERMINA DEPOK
Authors: Dian Sulistyas Patresia , Mardiati Najib
Published: January 2025

Rumah Sakit Hermina Depok menyediakan layanan rawat jalan dan rawat inap. Namun, selama periode dari 2021 hingga Oktober 2023, capaian untuk rawat inap tidak pernah memuaskan. Meskipun strategi pemasaran telah beradaptasi dari metode konvensional ke penggunaan konsep 4P (produk, harga, tempat, promosi), capaian rawat inap tetap belum optimal. Pengembangan strategi pemasaran modern dengan pendekatan STP (Segmentasi, Penargetan, dan Posisi) serta konsep 7P (produk, harga, tempat, promosi, orang, proses, dan lingkungan fisik/bukti) diharapkan dapat memanfaatkan peluang pasar dan memenuhi kebutuhan pelanggan dengan lebih baik. Penelitian ini menggunakan data sekunder seperti data kunjungan pasien rawat inap, tingkat hunian ruang rawat inap, dan kepuasan masyarakat untuk menganalisis dan mengatasi masalah. Hasil penelitian menunjukkan bahwa strategi pemasaran yang menggabungkan STP dengan 7P efektif dalam meningkatkan layanan kesehatan sesuai kebutuhan pelanggan. Setelah penerapan strategi pemasaran modern ini, Rumah Sakit Hermina Depok menunjukkan peningkatan dalam jumlah pasien rawat inap, jumlah pasien baru, serta kepuasan pasien, yang menunjukkan bahwa strategi ini berhasil diterapkan.
HUBUNGAN TINGKAT PENGETAHUAN DAN SIKAP PEKERJA TERHADAP PERILAKU K3 PADA PEKERJA DI UNIT FACILITY PT.X KOTA BATAM TAHUN 2024
Authors: Hilal Alwi , M. Kafit M. Kafit , Parisma Wan Intan
Published: January 2025

Tujuan penelitian berdasarkan survei awal yang peneliti lakukan kepada pekerja di PT.X melalui wawancara kepada 10 pekerja di PT. X, diketahui mayoritas pekerja memiliki pengetahuan dan sikap yang kurang tentang K3 dan berdasarkan wawancara pernah terjadi kecelakaan ringan seperti tangan terjepit pintu, tergores. Penelitian deskriptif ini menggunakan pendekatan kuantitatif untuk standar ilmiah secara sistematis, obyektif, terukur menentukan bagaimana variabel bebas (independent), yaitu variabel pengetahuan K3 dan sikap, mempengaruhi variabel terikat (dependent), yaitu variabel perilaku K3. Populasi dalam penelitian ini adalah 50 sampel pekerja di unit facility PT. X. Populasi digunakan sebagai sampel, jumlah sampel 50 responden. Analisis statistik menggunakan uji chi -square, dengan instrument penelitian wawancara menggunakan kuesioner. Hasil penelitian, terdapat hubungan tingkat pengetahuan dengan nilai p value = 0,012, terdapat hubungan sikap pekerja dengan nilai p velue = 0,010. Diharapkan kepada PT.X Kota Batam untuk dapat mempertahankan bahkan meningkatkan performa terkait informasi tentang K3, seperti poster, brosur yang harus jelas dan mudah dimengerti, Pekerja berperilaku yang baik tidak hanya membantu setiap orang tetap aman, tetapi juga dapat membangun lingkungan kerja yang aman, seperti dengan sukarela berpartisipasi dalam kegiatan keselamatan dan membantu rekan kerja menghindari bahaya di tempat kerja.
EFEKTIVITAS PEMBERIAN TERAPI INHALASI PADA PASIEN DENGAN BRONKOPNEUMONIA UNTUK MENGATASI KETIDAKEFEKTIFAN BERSIHAN JALAN NAFAS
Authors: Aisya Saktika , Hudiyawati Dian
Published: January 2025

Bronkopneumonia adalah penyakit infeksi pada saluran pernapasan atas yang dapat melemahkan daya tahan tubuh pasien. Istilah "bronkopneumonia" merujuk pada peradangan yang terjadi di paru-paru, khususnya pada bronkiolus dan kantung udara kecil. Salah satu masalah yang sering muncul pada pasien dengan bronkopneumonia adalah ketidakmampuan pembersihan jalan napas, yang disebabkan oleh produksi sputum berlebihan yang mengakibatkan penumpukan sekret di bronkus. Terapi inhalasi menjadi salah satu metode efektif untuk memberikan obat, di mana obat dihirup melalui hidung dan masuk ke paru-paru dalam bentuk aerosol. Metode studi kasus ini merupakan studi kasus dengan desain penelitian yang bersifat deskriptif. Teknik pengumpulan data dengan melakukan tahapan pengkajian, diagnosis, investigasi, dan evaluasi. Subjek dalam aplikasi ini adalah pasien dengan bersihan jalan napas tidak efektif akibat adanya retensi sekret. Prosedur pengumpulan data dilakukan dengan cara observasi, wawancara, pemeriksaan fisik, evaluasi dan dokumentasi yang dilaksanakan pada tanggal 14 sampai dengan 16 November 2023. Hasil studi kasus menunjukkan bahwa terapi inhalasi pada pasien bronkopneumonia dapat mengatasi bersihan jalan napas tidak efektif. Terbukti dengan respon gejala bersihan jalan nafas normal, batuk efektif, tidak ada sputum yang tertahan, diipsnea, orthopnea, dyspnea dan hasil serta indikasi setelah dilakukan tindakan secara berulang, inhalasi selama 3 hari terbukti pada pasien bronkopneumonia Pengobatan obstruksi jalan nafas tidak efektif berjalan efektif, melalui pengkajian dan intervensi sputum dan batuk sudah berkurang.
FAKTOR – FAKTOR YANG BERHUBUNGAN DENGAN KUALITAS HIDUP LANSIA DI PANTI BHAKTI KASIH SITI ANNA DAN RUMAH KASIH EMAUS KOTA PANGKALPINANG TAHUN 2024
Authors: Oktarina Rusmilda , Maryana Maryana , Agustiani Sirli
Published: January 2025

Kualitas hidup atau health related quality of life (HRQoL) adalah penilaian secara subjektif terhadap kesehatan fisik dan mental. Lingkungan, nilai budaya, dan faktor ekonomi semuanya berdampak pada kualitas hidup. Kualitas hidup dipengaruhi oleh faktor psikologis, sosial dan dukungan keluarga. Pada umumnya lansia mengalami keterbatasan, sehingga kualitas hidup pada lansia mengalami penurunan.penelitian ini bertujuan untuk mengetahui faktor yang mempengaruhi kualitas hidup lansia di panti bhakti siti anna dan rumah kasih emaus kota pangkal pinang. Desain penelitian menggunakan pendekatan penelitian cross-sectional Jumlah sampel yaitu 43 lansia, dengan pengambilan sampel total sampling yang dilakukan pada tanggal 07-20 juni 2024. Analisis data menggunakan uji chi square. Berdasarkan hasil penelitian didapati bahwa Terdapat hubungan yang bermakna antara faktor psikologis ( p= 0,0000, POR= 38,000), dukungan sosial (p=0,000, POR=15,833), dan dukungan keluarga (p=0,000, POR=15,833) dengan kualitas hidup lansia Di Panti Bhakti Siti Anna dan Rumah Kasih Emaus Kota Pangkalpinang. Saran untuk penelitian ini yaitu untuk pihak panti dapat mengadakan konseling rutin kepada lansia, melakukan pengembangan komunikasi social, serta mengadakan program dukungan keluarga.