bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Analysis of Recurrent Neural Network Models Performance in Predicting Bitcoin Prices
Authors: Ramadhan Zidane Ikkoy , Widiputra Harya
Published: July 2024

The recurring neural network is a deep learning algorithm that is commonly used to develop prediction systems. There are many variants of RNN such as RNN itself, long-short-term memory (LSTM), and gated recurring unit, so it is frequently debatable which algorithm from the RNN family has the most optimal efficiency and computation time. When developing a prediction system, sequential or time series data is required so that an accurate prediction can be made. Sequential or time series data involve data arranged in a time sequence, such as weather data, financial data, carbon emission data, and traffic data recorded over time. This research will be carried out by predicting the three RNN models against historical Bitcoin value data. The research method used is Experimental Design by comparing the performance between the three models on bitcoin value time series data, testing is done by involving hyperparameters such as Tanh, Sigmoid, and ReLU activation functions, batch size, and epochs. The aim of this research is to find out which RNN model can produce the most optimal performance and find out what performance measures can be used to evaluate and compare the performance between the three models. The results of the study show that LSTM is the most effective model with RMSE 0.012441 and MSE 0.000155 but inefficient because it takes 3 minutes 24 seconds to run the computation; in the meantime, the Tanh activation function gives the most optimal prediction than Sigmoid and RelU and therefore should be the main candidate to be used with RNN models when predicting Bitcoin prices.
Interaksi Sosial Termediasi Pembaca Alternative Universe (AU) “Slowmotion”
Authors: Afrilia Roesdiana , Hidayat Medhy Aginta
Published: July 2024

This article aims to explain the phenomenon of mediated social interaction of Alternative Universe (AU) story readers through Telegram social media which has characteristics as a close and private group, and to find out how AU readers form and maintain online social networks on Telegram. The method used in this research is a qualitative method using a netnography approach. In data collection techniques, researchers used observation, in-depth interviews, and documentation. To determine the informants in this study, researchers used purposive sampling technique, by determining in advance the criteria for informants to be studied. The data validity check technique in this research uses source triangulation technique. The results of this study show that even though they do not know each other personally, the AU story readers who are members of the “'Pasukan Bawah Tanah” Telegram group have intense mediated social interactions, by following every project made by the AU writer “Slowmotion” and establishing close friendships between members. In addition, the information distribution process carried out by AU readers who are members of the “'Pasukan Bawah Tanah” Telegram group is able to produce a number of joint content collaborations through the exchange of ideas between writers and group members. In these ways, the readers of the AU story “Slowmotion” and the members of the “Underground Troops” group can maintain the existence of themselves and their groups in the mediated social network through Telegram.
EFICÁCIA DA FITOTERAPIA NO TRATAMENTO DE CÂNCER DE MAMA COMO TRATAMENTO COMPLEMENTAR REVISÃO SISTEMÁTICA
Authors: Menezes Jasmine Cristine Rodrigues , Ribeiro Raimundo Domingos Maciel , Rego Jady Rebeca Marques , Pinheiro Luanny De Oliveira
Published: July 2024

O câncer de mama é a neoplasia mais comum entre as mulheres e sua principal causa de morte entre os diferentes tipos de câncer nessa população. O tratamento convencional, que inclui cirurgia, radioter
Neuroimagem de Massas Tumorais
Authors: Feltrin Fernando Belome
Published: July 2024

Um verdadeiro manifesto sobre o estudo de massas tumorais cerebrais, abrangendo diferentes perspectivas, sendo a principal o diagnóstico de tais patologias a partir de exames de imagem. Ricamente exemplificada, esta obra abrange todo o referencial teórico (cientificamente embasado) sobre cada aspecto envolvido no entendimento de como tumorações surgem e se instalam no principal protagonista de nosso organismo, o cérebro.
A partir de um conteúdo direto ao ponto, entenda desde a anatomia e fisiologia envolvida, passando pelo mecanismo de câncer até as características que identificam cada tipo de neoplasia intracraniana da perspectiva de neuroimagem por ressonância magnética e tecnologias além, como visão computacional e redes neurais artificiais.
Obra com abordagem autodidata, totalmente exemplificada, com as devidas explicações para cada tópico em questão.
PRÁTICAS E DESAFIOS DOS CUIDADOS PALIATIVOS EM NEONATOLOGIA E PEDIATRIA: UMA REVISÃO
Authors: Portes Gustavo Cosendey , Oliveira Maurycia Lima de , Lana Isabella Miranda , Paula Helena Furlani de
Published: July 2024

Os cuidados paliativos em neonatologia e pediatria desempenham um papel fundamental na melhoria da qualidade de vida de crianças com doenças graves ou terminais e suas famílias. Esses cuidados se estendem além do tratamento curativo, englobando o alívio da dor, suporte emocional e assistência integral, visando proporcionar conforto e dignidade em momentos críticos (LIMA; SOUTO, 2020). Com os avanços contínuos na medicina, a sobrevivência de neonatos e crianças com condições de saúde complexas tem aumentado significativamente, o que destaca a necessidade de um enfoque paliativo apropriado para esta população vulnerável (SILVA; COSTA, 2019).
A TERAPIA COGNITIVO-COMPORTAMENTAL E A PRÁTICA DE MINDFULNESS NA REDUÇÃO DA ANSIEDADE
Authors: Silva Layane Souza , Pereira Leia Miranda , Pelissari Francieli Cordeiro , Santos Andreia Freitas dos , Gomes Marcia Alves
Published: July 2024

A Terapia Cognitivo-Comportamental (TCC) vem apresentando diversos benefícios para vida dos indivíduos com diversas apresentações de adoecimento mental, por meio de intervenções psicoeducativas, melhorando a qualidade de vida e humor, favorecendo a diminuição de riscos (Rizzuti; Siquara; Abreu, 2017). Tem-se conhecimento de que a TCC se tornou ao longo do tempo uma das terapias mais bem sucedidas e amplas, praticada por terapeutas do mundo inteiro em diversos contextos utilizando métodos apoiados empiricamente. Sendo aplicada em muitos programas no manejo da depressão, transtorno de pânico, fobias, ansiedade, raiva, transtornos relacionados ao estresse e diversas outras condições. (Greenberger; Padesky, 2017).
Quadro de Referência das Competências Pedagógico-Digitais de Professores. Pedagogical Digcompedu Reloaded
Authors: Moreira José António , Dias-Trindade Sara , Knuppel Maria Aparecida , Serra Ilka
Published: July 2024

Tendo em consideração os recentes desenvolvimentos relacionados com a emergência das tecnologias cognitivas de IA e das tecnologias imersivas, e da ausência na versão original do DigCompEdu de competências pedagógico-digitais relacionadas com a educação aberta e online, desenvolvemos um quadro de referência (framework) e um questionário de autoavaliação de competências digitais docentes com uma maior amplitude de competências nas quatro áreas da dimensão pedagógica do DigCompEdu integrando competências relacionadas, quer com os paradigmas da Educação Aberta e da Educação Digital em Rede, quer com a emergência da Inteligência Artifi cial Generativa em contexto educativo.
Disposable Diapers in Infancy and Their Potential Detrimental Impact on Male Fertility in Adulthood
Authors: Eliezer Girsh
Published: July 2024

The overall human fertility rate has been continuously declining across the globe for a number of reasons. This review summarizes data, which proposes that the use of disposable diapers for newborns and infants may incur reproductive harm in adulthood. More than 70 years ago, a disposable synthetic waterproof baby diaper was developed, mainly to reduce the burden of working mothers. Modern diapers feature the same original design, which contains one unit of disposable material wrapped around the perineum to collect urine and feces. This design results in an increase in internal area temperatures by 2-4 °C, which can be detrimental to the function and development of reproductive cells. Moreover, the standard diaper template promotes the free passage of feces, including fecal bacteria, to the genitals, which can lead to urogenital infection and reproductive impairments. The available clinical data suggest that diaper use during infancy may have a negative impact on fertility after puberty. There is a critical need for additional studies to better assess the impact of diapers on reproductive health.
Analysis and Design of Customer Relationship Management System on the SMEs Using Iconix Process
Authors: Fitri Anindo Saka , Wati Seftin Fitri Ana , Najaf Abdul Rezha Efrat , Kartika Dhian Satria Yudha , Widodo Suryo , Nabila Achmad Wildan
Published: July 2024

Background: Integrating Customer Relationship Management (CRM) systems is crucial for small and medium enterprises (SMEs) to enhance customer relations and profitability. Many SMEs in Indonesia, including Go-Sumber Plastik, still need to fully utilize CRM systems, which are essential for managing customer data, improving satisfaction, and retaining customers. Objective: The purpose of this research is to analyze and design a web-based CRM system for Go-Sumber Plastik using the Iconix Process methodology to enhance user interaction and overall system effectiveness. Methods: The study employed the Iconix Process methodology, which includes a use case, robustness, sequence diagrams, a GUI prototype, and a test plan. The design was tested using Maze to measure user interaction efficiency and satisfaction. Results: The research revealed significant challenges in user understanding of the CRM system, particularly in managing activities and adding customer information. Tasks such as reporting and logging in had good user performance. The overall user interaction score was 81.1, indicating moderate effectiveness of the initial design. Conclusion: The results underscore the necessity for a more intuitive and streamlined CRM system interface for Go-Sumber Plastik. Implementing an effective CRM system can improve SMEs' competitiveness and profitability by systematically enhancing communication, managing customer data, and boosting business performance. Future research should focus on refining the user interface to reduce error rates and improve task completion efficiency. Enhanced visibility and user guidance are recommended to optimize system usability and customer satisfaction.
Enhancing the Decision Tree Algorithm to Improve Performance Across Various Datasets
Authors: Putra Pandu Pratama , Anam M Khairul , Defit Sarjon , Yunianta Arda
Published: July 2024

Background: The Village Fund is an initiative by the central government to promote equitable regional development. However, it has also led to corruption. Many Indonesians share their opinions on the Village Fund on social media platforms like X, and news coverage is extensive on portals like detik.com. Objective: This study aims to classify data from social media and news coverage to enhance understanding. Methods: The research improves the decision tree algorithm by integrating other algorithms and techniques such as XGBoost and SMOTE. Ensuring high accuracy is vital for the credibility of machine learning classifications among the public. The study uses two different datasets, necessitating varied testing approaches. For the news portal dataset, a single test with seven labels is conducted, followed by enhancement with XGBoost. The X dataset undergoes two tests with datasets of 1200 and 3078 entries, using three labels. Conclusion: The evaluation results indicate that the highest accuracy achieved with the news portal data was 82%, thanks to a combination of decision tree algorithms with various parameters and the balancing effect of SMOTE. For the Twitter dataset with 3078 entries, the highest accuracy reached 95%, attributed to the application of ensemble techniques, particularly boosting.
A Prototype Design of a Vertical Axis Wind Turbine as One of the Renewable Energy Sources in Brunei
Authors: Mahmood Muhammad Azim , Hastuty Sri , Gołdasz Iwona , Caesarendra Wahyu
Published: July 2024

Background: According to the Asia Wind Energy Association, Brunei can harness the power of wind energy to meet its future demands for a reliable energy source that is both renewable and non-polluting. Objective: A preliminary study to design and manufacture wind turbines needs to be initiated earlier especially in the Brunei with has potential wind energy. Methods: This preliminary study compares several Vertical Axis Wind Turbine (VAWT) types and examines the optimal design in terms of mechanical parts for wind speed characteristics in Brunei. The project focuses on the engineering design stages to obtain a selected design that differs from other available designs. Results: The preliminary study successfully generated a small amount of electricity from the mechanical rotation of the VAWT. Conclusion: Although the preliminary study can generate a small amount of electricity, several design parameters need to be improved in further study. Proper manufacturing technologies are also needed to fabricate a better VAWT.
Research on the Acceptance of Crowdsourced Translation Platform Technologies by Translators
Authors: Zhao Hui , Bin Selama Ali , Hanis Binti Mohd Azm Kaiyisah
Published: July 2024

In the current era marked by rapid digitalization and globalization, crowdsourced translation platforms have emerged as key players in the global translation market, prized for their flexibility and efficiency. This new model of translation services not only provides a means to address large-scale translation demands but also introduces challenges and shifts in conventional translation workflows. This study investigates translators’ acceptance of paid crowdsourced translation platform technologies, with the aim of identifying the primary factors that influence technology acceptance and understanding how these factors impact translators’ work attitudes and behaviors. Through a mixed-methods approach that integrates surveys and in-depth interviews, the study gathers data from 300 translators with varied experiences and backgrounds. Utilizing the Technology Acceptance Model (TAM), the research reveals the significant effects of perceived usefulness and perceived ease of use on translators’ acceptance of technology. It is particularly noteworthy that translators show a high sensitivity to their perceptions of the platforms’ efficiency and potential changes in their income. Furthermore, job satisfaction emerges as a key factor in determining translators’ willingness to continue using crowdsourced platforms. This research not only provides insights into how to enhance the relationship between crowdsourced translation platforms and translators but also offers valuable recommendations for the advancement of translation education and the professional development of translators.
Cardiovascular image analysis: AI can analyze heart images to assess cardiovascular health and identify potential risks
Authors: Sankara Reddy Thamma
Published: July 2024

CVDs continue to be the number one cause of death, therefore early detection and treatment is crucial. Currently, the application of Artificial Intelligence (AI) in the cardiac image analysis has become popular due to increased accuracy, productivity, and modelling. In this paper, the use of the AI system to study the echocardiogram, CT, MRI, and other images of the heart and blood vessels to view the risk factors for cardiovascular diseases is discussed. We focus on the current methods of artificial intelligence, how it is implemented in clinical practice, problems, and prospects for AI development.
Supply chain management and operational efficiency in affordable housing: An integrated review
Authors: Adetola Adewale Akinsulire  , Courage Idemudia  , Azubuike Chukwudi Okwandu  , Obinna Iwuanyanwu
Published: July 2024

Effective supply chain management (SCM) and operational efficiency are critical to the successful delivery of affordable housing projects. This integrated review explores how SCM and operational practices impact the development and sustainability of affordable housing, highlighting strategies that enhance project efficiency and cost-effectiveness. Supply chain management in affordable housing involves coordinating the flow of materials, information, and services from suppliers to construction sites. Efficient SCM ensures that resources are delivered on time, within budget, and to the required quality standards, which is crucial for maintaining project schedules and controlling costs. Key components of SCM in this sector include procurement, logistics, inventory management, and supplier relationship management. Effective SCM practices help mitigate risks related to delays, cost overruns, and quality issues. Operational efficiency in affordable housing focuses on optimizing construction processes, minimizing waste, and enhancing productivity. This involves adopting best practices in construction management, such as lean construction techniques, modular and prefabricated building methods, and advanced project management tools. Operational efficiency also extends to the management of workforce resources, ensuring that labor is effectively utilized and that productivity is maximized. The review integrates insights from various case studies and industry reports to illustrate how SCM and operational efficiency practices can be applied in affordable housing projects. For instance, the adoption of just-in-time inventory systems and the use of technology for real-time tracking and coordination have proven effective in reducing costs and improving delivery times. Additionally, lean construction methods have demonstrated their potential in enhancing project efficiency and reducing waste. However, challenges remain, including supply chain disruptions, fluctuating material costs, and coordination issues among stakeholders. Addressing these challenges requires a collaborative approach, involving stakeholders such as developers, contractors, suppliers, and policymakers. In conclusion, effective supply chain management and operational efficiency are essential for the successful development of affordable housing. By adopting best practices and leveraging technology, stakeholders can improve project outcomes, reduce costs, and enhance the overall efficiency of affordable housing projects. This integrated review underscores the importance of SCM and operational practices in achieving sustainable and cost-effective housing solutions.
Peningkatan pengetahuan masyarakat dengan edukasi Hipertensi di Kelurahan Beliung Kecamatan Alam Barajo
Authors: Wirahandayani Marthalisa
Published: July 2024

Abstrak
Masalah hipertensi menjadi yang signifikan dan tantangan kesehatan yang semakin meningkat. Hipertensi merupakan penyakit berbahaya yang perlu diwaspadai, karena sering tanpa keluhan. Hal inilah yang menjadikan hipertensi terkategori Silent killer. Berdasarkan hasil diagnosa komunitas, penyakit Hipertensi menjadi permasalahan utama di RT.08 Kelurahan Beliung karena sebagian besar masyarakat merujuk pada penyakit tersebut. Metode yang digunakan dalam pengabdian masyarakat ini berupa penyuluhan, senam hipertensi, disertai dengan pemasangan media edukasi berupa poster. Kegiatan penyuluhan ini untuk memberikan edukasi kepada masyarakat agar dapat melakukan upaya pengenalan, pencegahan, dan pengendalian secara mandiri. Pengabdian masyarakat ini memberikan hasil yang positif dimana masyarakat terlihat sangat antusias, semakin meningkatkan pengetahuan dan kesadaran mereka terkait apa itu hipertensi, gejala hipertensi, bahaya hipertensi, penanggulangan, dan upaya pencegahan hipertensi.
 
Abstract
Hypertension is a significant health problem and an increasing health challenge. Hypertension is a dangerous disease that needs to be watched out for, because it often causes no complaints. This is what makes hypertension categorized as a silent killer. Based on the results of community diagnoses, hypertension is the main problem in RT.08 Beliung Village because the majority of people refer to this disease. The methods used in this community service include counseling, hypertension exercises, blood pressure measurements, accompanied by the installation of educational media in the form of posters. This outreach activity is to provide education to the public so that they can carry out recognition, prevention and control efforts independently. This community service has provided positive results where the community looks very enthusiastic, increasing their knowledge and awareness regarding what hypertension is, symptoms of hypertension, the dangers of hypertension, management and efforts to prevent hypertension
The Role Of Green Culture In Generating Sustainable Economic Performance And Increasing Post-Pandemic Stock Prices Healthcare Sector In Indonesia And Singapore
Authors: Aulia Azwani , Siregar Johannes Kristian , Aripin Feni Ariani Rahayu
Published: July 2024

Green culture pada sektor healthcare menjadi isu baru dalam dunia ekonomi karena dinilai mampu meningkatkan nilai perusahaan, dengan cara melestarikan sumber daya alam agar pembangunan ekonomi tetap berkelanjutan. Penelitian ini bertujuan untuk mengetahui peran green culture dalam membangkitkan kinerja ekonomi berkelanjutan dan kenaikan harga saham pasca pandemi sektor healthcare di indonesia dan singapura, sehingga manajemen perusahaan dapat mengimplikasikan hasil penelitian ini yang diharapkan dapat memberikan manfaat langsung maupun tidak langsung bagi perusahaan-perusahaan di sektor kesehatan. Penulis mengumpulkan variabel independen yang terkait dengan penelitian yaitu sdgs dan stock return, dan variabel dependen green culture, dengan nilai perusahaan sebagai variabel intervening. Populasi penelitian ini adalah perusahaan sektor kesehatan yang terdaftar di bursa efek indonesia dan singapura. Penelitian ini menggunakan metode kuantitatif dengan data sekunder menggunakan analisis multivariat dengan pendekatan path analysis menggunakan eviews 13. Pengujian h1; h2; h3; yang mempunyai hasil signifikan karena mempunyai nilai p dibawah 0,05. Sedangkan h4 mempunyai hasil yang tidak signifikan karena mempunyai nilai p diatas 0,05. Untuk menjawab tantangan keuangan berkelanjutan diperlukan perangkat kebijakan dari berbagai kementerian dan lembaga terkait. Selain meningkatkan kesadaran masyarakat mengenai budaya hijau, kebijakan yang diambil diharapkan juga disertai dengan insentif atau disinsentif kepada sektor kesehatan guna meningkatkan porsi pembiayaan yang mendukung keuangan berkelanjutan menuju net-zero emisi.
A Liturgical Examination of Lighting and Lighting Elements in Religious Buildings from the Middle Ages to the Present
Authors: Küçük Ahmet Afşin , Büyükmıhçı Gonca
Published: July 2024

There have been different historical processes in the use of lighting. It started with a fire in the Paleolithic Period and continued until the Modern Age with lighting elements such as torches, candles, and kerosene. The differences in this process are related to the change in sociological needs and often stem from the form. Especially in the lighting of religious buildings, sociological needs, symbolic narratives, and liturgy were the main elements of differences until the modern age. This research investigates the various forms that lighting elements have taken throughout history, based on different functions, from the Middle Ages to the present. These forms are examined in terms of their liturgical meanings based on their intended use, as well as their requirement for effective symbolic expression in lighting elements as part of the mission they undertake in religious buildings.
A Holistic Approach to Creating Ethical Sensitivity and Awareness in Landscape Design Education
Authors: Çelik Filiz
Published: July 2024

The starting point of the present study was the observation of the increasing number of unethical behaviors among the students of landscape design education in recent years. The purpose of the study was to determine the ethical perceptions of students, and their ethical awareness, ethical behaviors, ethical preferences, ethical judgments, and ethical decision-making skills in the design process. In this context, the ethics concept and the importance of ethics in design education were explained, and a questionnaire was used to the students. Among the 199 students, 149 students participated in the study voluntarily. As a result of the study, it is possible to argue that the ethical perceptions and awareness of ethical/unethical behaviors of the students in design were high, their ethical decision-making skills improved, and they could make ethical choices and ethical judgments. Despite this fact, it is up to the students to make ethical choices and act ethically by showing ethical sensitivity in their designs. Ethics in design courses and how ethics education can be integrated into design courses were explained to provide ethical sensitivity and awareness to students in landscape design education.
Visualization Of Cell Signal Transduction By The Method Of Microwave Dielectrometry At Dilated Cardiomyopathy
Authors: Khmil N.V. , Altuhov O.L. , Kolesnikov V.G. , Altuhov O.O.
Published: July 2024

The results of processing the transduction of the cell signal in erythrocytes under physiological conditions and duringdevelopment of dilated cardiomyopathy are presented. The microwave dielectrometry method was tested to visualize the electromagnetic signal from a suspension of erythrocytes using the “sweep”-regime of a piezoelectric cell in the sound frequency range f=10÷12000 Hz. Erythrocyte hydration was estimated by the parameter of the real part of the complex permittivity e′ at a frequency of 37.7 GHz. The use of a stimulator and modulator of β-adrenergic receptors – adrenaline and prostaglandin E2 allowed us to simulate a violation in the system of transduction of the cell signal through the adenylate cyclase system of erythrocytes in vitro. Analysis of the erythrocyte’s electromagnetic response spectra in the “sweep”-regime recorded differences in the intact and experimental samples, as well as during the screening of the additives used. The dielectric data were verified with the data of echocardiography and radiography, which made it possible to recommend microwave dielectrometry as one of the methods of non-invasive operative diagnosis of dilated cardiomyopathy
Life Cycle Assessment on the Direct Recycling Aluminium Alloy AA6061 Chips and Metal Matrix Composite (MMC-AlR)
Authors: Yusuf N.K. ,   Universiti Tun Hussein Onn Malaysia, Lajis M.A. , Ahmad A. ,   Universiti Tun Hussein Onn Malaysia,   Universiti Tun Hussein Onn Malaysia
Published: July 2024

Metallic material processing plays a significant role in terms of global environmental impact which contributes to the climate change phenomena that is a serious international environmental concern and the subject of much research and debate. Thus, energy-and resource-efficient strategies in the metal shaping technology domain need to be identified urgently. A frequent theme in the debates that surround waste and resources management is the extent to which the recycling of metallic materials offers genuine benefits to the environment. Solid state recycling techniques allow the manufacture of high density aluminium alloy parts directly from production scrap. In this paper the environmental impacts associated with ‘meltless’ scrap processing routes through hot press forging process with varying parameter has been studied. A comparative analysis has been performed with two different type of materials which is recycling aluminium alloy (AA6061) chips and metal matrix composite (AA6061 chips + 2% alumina) in order to quantify and compare the environmental benefits for both materials. The LCA data are collected using Simapro 8.0.4 software. The additional materials used in a product resulted higher environmental impact. Metal matrix composite had higher value of mid point and endpoint impact categories compare to aluminium alloy chips.
Structural Analysis and Material Characterization of Silver Conductive Ink for Stretchable Electronics
Authors: Zulfiqar Sana ,   Universiti Sains Malaysia, Saad Abdullah Aziz , Ahmad Zulkifli , Yusof Feizal , Bachok Zuraihana ,   Universiti Sains Malaysia,   Universiti Sains Malaysia,   Universiti Sains Malaysia,   Universiti Sains Malaysia
Published: July 2024

Stretchable electronic systems have become more popular in various applications such as medical, fabric, flexible sensors for personalized health care, etc. There are two major parts of flexible and stretchable circuit boards that are substrate (a plastic material) and conductive ink (formulated polymer with conductive metal). According to electrical measurements, conductive ink plays a very important role in stretchable electronic equipment. The main objective of this paper is to develop a silver (Ag) based conductive ink and characterize its mechanical and electrical properties. Conductive ink is prepared by mixing an epoxy resin, cross –linking agent, additives (adhesion promoter), organic solvent, catalyst and silver flakes all together. ASTM D412 Type C dog bone shaped cutter is used to make three samples of conductive ink. The stress-strain analysis of conductive ink is carried out using universal testing machine (UTM). The conductivity is measured using two-point probe digital multi-meter. Also, the microstructural analysis, morphology and characterization are done by scanning electron microscopy (SEM). The images are taken after curing and tensile testing. The formulated ink possesses high conductivity and stretchability up to 137% strain. The achieved conductivity of the ink is 4.167×104S/m. The maximum stress before failure, yield stress, Young’s and tangent moduli are calculated as 1.195 MPa, 0.86 MPa, 5.72 MPa and 2.08 MPa, respectively. The SEM analysis indicates that the distribution of silver particles is uniform and in a good density throughout the sample.
Mechanical and Failure Analysis of Multi-Materials Adhesive Joining
Authors: Kavishka Dias Gimash ,   University of Nottingham Malaysia, Sakundarini Novita , Chin May May Christina ,   University of Nottingham Malaysia,   University of Nottingham Malaysia
Published: July 2024

The evolvement of joining dissimilar materials using adhesive joining has been vastly improved over the years and has been used in various industries such as medical, automotive and construction. In the automotive industry specifically, the use of multi-materials has proven to improve material properties. However, fewer studies have been done to understand the failure mechanism of multi-material adhesive joining. This study investigates the mechanical failure for lap joints of different materials that have undergone mechanical abrasive treatments and chemical etching, before adhesively joined together. The result showed that sandblasting as surface preparation is very important as it increases the surface roughness of the material, giving a better adhesion bond. Chemical etching also increases the surface roughness minutely and is considered an important step for the purpose of degreasing. Tensile tests were conducted as a destructive test and it was found that mild steel, aluminum, and PVC materials were deemed to be the best choice for multi materials adhesive joining.
Implementation Of Lean Technique Towards Reducing Waiting Time In A Public Healthcare Using Arena Simulation
Authors: Ahmad Ahmad Nur Aizat ,   Universiti Tun Hussein Onn Malaysia, Ahmad Md Fauzi , Abdul Hamid Norhadilah , Abdul Hamid Nor Aziati , Chuan Lee Tee , Nawanir Gusman , Bakri Adnan , Abdul Rahim Mustaqqim ,   Universiti Tun Hussein Onn Malaysia,   Universiti Tun Hussein Onn Malaysia,   Universiti Tun Hussein Onn Malaysia,   Universiti Tun Hussein Onn Malaysia,   Universiti Malaysia Pahang,   Universiti Kuala Lumpur,   Universiti Malaysia Perlis
Published: July 2024

Lean is a set of operating philosophies and methods that can help patients create maximum value by reducing waste and waiting time. Longer waiting times are associated with increased levels of discomfort experienced by patients that may affect the patient’s mental health, leads to depression, anxiety disorder and psychological distress. The waiting time of clinic is considered one of the crucial aspects of patient satisfaction which is a key indicator of service delivery. Therefore, the purpose of this study is to implement lean techniques towards reducing waiting time at outpatient department in one of the public healthcare centres in Kedah. This study had collected the data for three days at the outpatient department by using qualitative method through interview and observation. Data was collected through a record phenomenon with instrument and observing the service time of patients in the process flow throughout the treatment period from the moment they arrived at the healthcare until treatment is provided and the patient leaves the outpatient department. Arena simulation software designed for data analysis was used to simulate the modeled process in the simulation software. The simulation system can help to produce more accurate decision for an efficient flow of the patient’s in and out of the treatment process and reduce the waiting time. The results showed the total average processing time for each patient through all the process had reduced by 7.21 minutes (15.20%) after the waste was eliminated and improvement process had been made. This can lead to an increase in the number of patients in and out in daily operation at the outpatient department.
Additive Manufacturing Technologies and Its Future in Industrial Applications
Authors: İyibilgin Osman ,   Sakarya University, Gepek Engin ,   Sakarya University
Published: July 2024

Additive manufacturing technologies have developed rapidly in the last ten years and have become a technology with significant advantages compared to traditional manufacturing. Depending on discovering new materials and techniques, additive manufacturing technologies also develop and become more economical and sustainable technology. The widespread use of this technology in industrial areas has accelerated development and contributed to increased product quality. However, to ensure the development and continuity of this technology, it is necessary to reduce the production costs, increase the quality and accelerate the production processes. These processes also trigger competition and accelerate the development of technology. The areas that additive manufacturing technologies are mostly applied can be grouped as aerospace, biomedical, smart technologies, and other industrial applications. The fact that these areas are popular research areas also accelerates the development of additive manufacturing technologies. In this review, additive manufacturing technologies frompast to present, advantages and disadvantages of these technologies, aspects that need to be developed, and industrial applications are examined and explained. When the studies on additive manufacturing technologies and industrial applications are examined, it is seen that this technology has a wide usage area. With the use of additive manufacturing technologies, previously encountered in prototypes and special applications, in automotive, biomedical, and smart technologies, it is seen that they have begunto take place more in people's daily lives.
Deformation Mode and Energy Absorption Analysis of Bi-Tubular Corrugated Crash Box Structure
Authors: Choirotin Ismi ,   University of Brawijaya, Choiron Moch. Agus , Purnowidodo Anindito , Bangun Darmadi Djarot ,   University of Brawijaya,   University of Brawijaya,   University of Brawijaya
Published: July 2024

In this research, the characteristic of crash box with bi-tubular corrugated structure are numerically examined under axial loading condition. The crash box characteristic were observed in the compression test of aluminum alloy (AA6061) using ANSYS software. The comparation were carried out on two geometrical types, namely: ordinary corrugated tube (OCT) and bi-tubular corrugated tube (BCT). The result showed that comparing both of crash box structure exhibit the Simultaneous crush mode (S-mode) deformation. The force-displacement present a stable diagram without any fluctuation. BCT structure resulted 71% energy absorption capacity increment compared to OCT structure. The highest energy absorbed by BCT structure was 10.8 kJ. There are no significant specific energy absorption different between the specimen and the highest SEA occurat OCT structure with 31.281 kJ kg-1.
Springback Optimization of Dissimilar Thickness AA6061-T6 Blank Joint with Double Butt-Lap (DBL) Using Taguchi Method and ANOVA
Authors: Hussin Amer Isyraqi ,   USM Engineering Campus, Abdullah Ahmad Baharuddin , Abu Seman Sareh Aiman Hilmi ,   USM Engineering Campus,   USM Engineering Campus
Published: July 2024

This study focuses on investigating the effect of welding parameters, specifically spindle speed, feed rate, and tool tilt angle, on the springback of double-butt lap joints blank. To optimize springback of friction stir welded AA6061-T6 blanks with different thicknesses, a Taguchi L9 orthogonal design experiment was utilized. The responses of springback from lines perpendicular and parallel to the welding line were observed, and the optimal parameter combination for each type of springback was determined. Analysis of Variance (ANOVA) revealed that the tilt angle contributed the most to springback (parallel to the weld line) with 50.4%, while the spindle speed contributed the most to springback (perpendicular to the weld line) with 52.5%. Through confirmation testing, the optimal FSW parameters were validated.
Качество экономического роста аграрных формирований: категориальный аппарат и методология исследования
Authors: Лайпанова Зульфия Мудалиповна
Published: July 2024

Исследованы критерии и факторы обеспечения качества экономического роста аграрных формирований. В теоретическом аспекте развито понимание сущности категорий «устойчивое развитие», «экономический рост», «качество экономического роста», установлены иерархические связи и динамика взаимосвязей между понятиями в контексте влияния современного экономического поля. На основе изучения методологических подходов к парадигмам устойчивого развития обоснованы возможности их реализации применительно к аграрным формированиям с учетом проблем использования ресурсного потенциала, включая и финансово-экономические аспекты. Визуализирована трактовка комплексного взаимодействия параметров устойчивого развития и стадий экономического роста субъектов аграрного хозяйствования, а также сгруппированы ключевые факторы экономического роста. Обоснована значимость качественной стороны экономического роста как платформы стабильного развития государства и рационального применения отраслевой ресурсной базы. Предложен поэтапный порядок исследования качества экономического роста агроформирований, ориентирующий на ускорение темпов экономического роста и обоснование сценариев устойчивого развития. Систематизированы оценочные группы характеристик качества экономического роста в аграрном производстве, которые позволяют проводить детальный анализ участия составляющих производственного потенциала в логической цепи «ресурсы – результаты – рост». Предложено использование интегрального показателя, который отражает вклад отдельных составляющих производственного потенциала.
Легирование промышленных алюминиевых сплавов скандием
Authors: Захаров В. В.
Published: July 2024

Рассмотрено использование скандия в качестве легирующего элемента в алюминиевых сплавах. Обоснован выбор систем компонентов (сплавов), которые целесообразно легировать скандием для повышения свойств полуфабрикатов. Показано, что легирование алюминиевых сплавов скандием для повышения их механических свойств может быть эффективным при соблюдении определенных правил выбора химического состава и соблюдения температурно-временных технологических параметров при производстве деформированных полуфабрикатов.
Структура и свойства медных сплавов системы Cu – Cr – Zr после деформации и отжига
Authors: Бодякова А. И. , Мишнев Р. В. , Кайбышев Р. О.
Published: July 2024

Исследована структура медных сплавов системы Cu – Cr – Zr после равноканального углового прессования и отжига методами растровой и просвечивающей электронной микроскопии. Определены механические свойства и электрическая проводимость сплавов. Установлено, что в деформированных сплавах после отжига при 200 – 500 °C наблюдается возврат и довыделение дисперсных частиц, однако статическая рекристаллизация не развивается. Повышение температуры отжига до 600 °C сопровождается развитием рекристаллизации. При этом в сплаве с минимальным содержанием легирующих элементов наблюдается полностью рекристаллизованная структура, а в сплавах с повышенным содержанием хрома и циркония — деформированные области. Проанализировано влияние структурных изменений на механические свойства и электрическую проводимость сплавов.
Микроструктура и механические свойства слоистой заготовки из различных аустенитных сталей, выращенной методом аддитивной электродуговой наплавки
Authors: Кабалдин Юрий Георгиевич , Шатагин Дмитрий Александрович , Чернигин Михаил Алексеевич , Аносов Максим Сергеевич
Published: July 2024

Исследована возможность применения технологии электродуговой наплавки (WAAM) для аддитивного выращивания заготовок с использованием проволоки путем последовательного нанесения слоев нержавеющих сталей трех марок. Проведены металлографические исследования, ферромагнитный анализ, испытания на растяжение и усталость. Установлено, что химический состав используемых нержавеющих сталей оказывает значительное влияние на морфологию и развитость дендритов, образующихся при наплавке. Отсутствие несплавлений и других дефектов технологического характера на границах наплавочных валиков показало возможность применения WAAM при наплавке би- и триметаллов. Анализ изломов образцов подтвердил высокое качество сплавления аустенитных сталей различного состава между собой и однородность металла наплавки. Содержание ферромагнитных фаз в наплавленных образцах непосредственно после аддитивного выращивания значительно ниже расчетных для стали 07Х25Н13 и практически достигает значений для этой стали после термической обработки.
Work-related musculoskeletal disorders among various occupational workers in India: a systematic review and meta-analysis
Authors: Mishra Sukhdev , Avinash G. , Kundu Madan Gopal , Verma Jyotsana , Sheth Ankit , Dutta Abhijit
Published: July 2024

Objective: Work-related musculoskeletal disorders (WMSDs) are one of the most common occupational diseases, affecting various sectors such as agriculture, small-scale industries, handicrafts, construction, and banking. These disorders, caused by overexertion and repetitive motion, lead to work absenteeism, productivity loss, and economic impacts. The aim of the study is to determine the magnitude of musculoskeletal disorders among different occupational workers in India.Material and Methods: We identified studies reporting the prevalence of MSDs using the Nordic Musculoskeletal Questionnaire in different databases between 2005 and 2023 through searches on SCOPUS, PubMed Central, and Google Scholar. The required information was then extracted. A random effect model was used to pool estimates of prevalence with 95% CI. Publication bias was assessed byapplying funnel plots.Results: The 12-months prevalence of work-related musculoskeletal disorders (WMSDs) were reported across several occupational groups, the meta or the pooled prevalence was estimated as 0.76 (95% CI: 0.70 to 0.82) which suggest substantial variability in the prevalence estimates between differentindustries and studies. The meta-prevalence for low back pain was estimated as 0.60 (95% CI: 0.54 to 0.66). The meta-prevalence for Neck Pain was estimated as 0.40 (95% CI: 0.34 to 0.47) while for Shoulder Pain, it was estimated as 0.36 (95% CI: 0.30 to 0.42), respectively. The statistical significance for risk of Bias was non-significant and overall publication bias remains low as per visual inspections from funnel plot.Conclusions: WMSDs are prevalent across various Indian industries in significant proportion, particularly in agriculture, healthcare, and mining, leading to significant productivity loss and economic impact. The variation in prevalence highlights the need for sector-specific interventions. Addressing WMSDs requires comprehensive ergonomic and policy measures. Effective strategies are essential to mitigate these disorders’ widespread impact.Keywords: WMSDs, Low Back Pain, Shoulder Pain, Neck Pain, Funnel Plot, Forest Plot
Discord Website Testing Using Blackbox Testing and Selenium Manual and Automation Testing
Authors: Nugroho Isaac Yeremia , Kristianto Ryan Putranda
Published: July 2024

This research focuses on testing the Discord website. The testing method used includes two main approaches, namely blackbox testing and the use of Selenium for manual and automatic based testing. The purpose of this research is to explore aspects of application functionality, performance and reliability. In blackbox testing, we thoroughly examine the user interface. Meanwhile, using Selenium allowed us to automate much of the testing process to increase efficiency and identify issues that might have been missed in manual testing. The results of this research provide a comprehensive picture of the quality of Discord websites for the website platform, highlighting areas that are successful and those that need improvement. It is hoped that these findings will provide an in-depth view of the Discord website's readiness to meet user needs, as well as provide recommendations for improvements to improve performance, reliability and overall user experience.
The Otter and the Cleaver: Exploring the neural underpinnings of unitization using the Gestalt principle of proximity
Authors: Dennis Nancy , Overman Amy , Carpenter Catherine M , Becker Alexa , West John Thomas , Chase Spencer
Published: July 2024

Associative memory requires the binding of multiple objects into a single representation in memory. As such it is viewed as harder and more resource demanding than item memory. One means of facilitating associative memory is through the process of unitization. Previous work has suggested that, once unitized, discrete stimuli are processed as a single ensemble. The present study aims to test whether the grouping principle of proximity enhances associative memory by creating unitized representations of item pairs that resemble how single items are processed in memory in younger and older adults. To examine the neural basis of perceptual unitization, young and older participants encoded unrelated object pairs either proximally arranged (unitized condition) or distally arranged (associative condition) as well as single objects. Behaviorally, results showed enhanced memory for proximally organized object pairs compared to distally organized object pairs across both younger and older adults. Examination of neural pattern similarity across conditions suggested that while regions critical to associative memory largely processed the proximal object pairs more similarly to the distal object pairs, clusters of neural activity throughout the cortex did show greater similarity of neural patterns across proximal pairs and single objects during both encoding and retrieval. Results suggest that the simple act of configural placement is enough to initiate unitized-based encoding and maintain that representation at retrieval. Age differences emerged during retrieval suggesting that older adults have more difficulty maintaining unique memory representations.