bluuebunny/crossref_metadata_2025 huggingface dataset:
Mengembangkan Keterampilan Futsal melalui Kegiatan Coaching Clinic
Authors: Budi Budiman
Published: February 2024

Kegiatan pengabdian pada masyarakat ini bertujuan untuk memberikan pemahaman dan keterampilan bermain futsal kepada masyarakat khususnya remaja di Kecamatan Bayongbong Kabupaten Garut. Metode kegiatan PKM ini disampaikan melalui praktek lapangan. Peserta kegiatan pengabdian masyarakat remaja berjumlah 22 orang. Adapun tahapan dalam latihan sebagai berikut, 1) penjelasan sesi latihan di ruang ganti; sesi pemanasan; sesi teknik; sesi keterampilan (sesi taktik atau fungsional); sesi situasi pertandingan; pengarahan/ Instruksi; pendinginan. Dari hasil pengukuran sebelum dan sesudah pelaksanaan coaching clinic, didapat hasil bahwa adanya peningkatan pemahaman dan keterampilan yang diperoleh oleh masyarakat yang menerima materi coaching clinic. Pelatihan ini sangat membantu masyarakat Kecamatan Bayongbong akan pemahaman dan keterampilan yang harus dimiliki seorang pemain futsal
PKM Pola Hidup Sehat Melalui Aktivitas Olahraga Bola Voly Warga Desa Cipangeran Kabupaten Bandung Barat
Authors: Hasmarita Sony , ishak Muchamad , Yunisal Papat
Published: February 2024

Warga masyarakat desa cipangeran mayoritas bermata pencaharian petani, buruh dan pedagang yang masyarakatnya kurang memperhatikan kebugaran tubuhnya. Pada keadaan cuaca seperti sekarang ini sehingga banyak warga masyarakat desa cipangeran yang sakit seperti batuk, flu dan mudah untuk menurun daya tahan tubuhnya. Pola hidup sehat sudah tidak dipedulikan oleh masyarakat. Hal tersebut dapat di atasi dengan berolahraga, makan teratur, menjaga kebersihan dan istirahat yang cukup, menerapkan protokol kesehatan merupakan unsur dalam pola hidup sehat untuk menjaga imunitas. Solusi yang ditawarkan pengabdi dari program studi PJKR adalah dengan memberikan sosialisasi mengenai pola hidup sehat dengan menjaga Kesehatan dengan olahraga bola voly yang dapat dilakukan oleh warga masyarakat di sore hari hari sehingga tidak mengganggu aktifitas kerja dan tetap masih bisa menjaga kesehatannya. Target luaran yang nantinya dapat tercapai adalah masyarakat di desa cipangeran bisa mengetahui peran pentingnya menjaga kesehatan dengan berolahraga sehingga dapat menciptakan pola hidup sehat sehingga terhindar dari berbagai macam virus. Tetap menerapkan protokol kesehatan untuk masyarakat desa cipangeran secara mandiri di rumah masing-masing agar kesehatan dan imunitas semakin terjaga
Optimalisasi Pemahaman Physical Literacy Dan Penggunaan Instrumen Pl-C Quest Pada Guru Pendidikan Anak Usia Dini
Authors: Friskawati Gita
Published: February 2024

Physical literacy merupakan sebuah konsep baru di dunia pendidikan jasmani. Physical literacy sangat penting dikembangan dan diukur pada masa anak usia dini untuk mendukung pertumbuhan dan perkembangan anak secara holistik. Kegiatan ini fokus pada optimalisasi pemahaman mengenai pentingnya physical literacy dan pengukurannya menggunakan instrumen PL-C Quest bagi anak pendidikan usia dini. Metode pelatihan yang digunakan melibatkan ceramah, demonstrasi dan diskusi. Kegiatan diikuti oleh enam orang guru pendidikan anak usia dini di TK Negeri Pembina Cimahi beserta satu orang kepala sekolahnya. Hasil penelitian menunjukkan adanya pemahaman dan kesiapan guru dalam menerapkan pengukuran physical literacy menggunakan instrumen PL-C Quest. Kegiatan ini berhasil meningkatkan kesadaran dan kemampuan guru dalam memahami konsep dan pentingnya physical literacy di lingkungan pendidikan anak usia dini, terutama bagi anak untuk mendukung pertumbuhan dan perkembanyannya secara holistik. Kesimpulan dari penelitian ini menekankan pentingnya pelatihan dan sosialisasi dalam implementasi pembelajaran aktivitas fisik untuk mendukung physical ligteracy dan pengukuran yang tepat bagi anak menggunakan PL-C Quest.
Emociones Positivas y Rendimiento Escolar en Alumnos de Primaria del Municipio Pánuco de Coronado Durango, México
Authors: Tortolero Portugal Rosalío , Reyes Hernández Iris , Figueroa González Ernesto Geovani , Gómez Romero José Gerardo Ignacio
Published: February 2024

La presente investigación tiene como objetivo general, determinar la correlación que existe entre las emociones positivas y el rendimiento escolar en el grupo de tercer grado de la escuela primaria “José Ramón Valdez” ubicada en la localidad de Francisco I. Madero, municipio de Panuco de Coronado, Durango México. Para la recopilación de la información se utilizó la técnica de la encuesta. El instrumento de medición aplicado en la investigación se conforma por 23 reactivos en la escala de Likert (3, Si, 2 Más o Menos, 1 No) el cual se aplicó al total de alumnos inscritos en el cuarto grado del ciclo escolar 2020-2021. En la investigación se utilizó el diseño no experimental, de nivel correlacional, de corte transversal, recopilando la información en un periodo específico. Por consiguiente, se puede afirmar que las emociones positivas cuentan con un mínimo grado de asociación con la variable rendimiento escolar de los alumnos de tercer grado de la escuela primaria “José Ramón Valdez”, obteniendo un coeficiente de correlación Rho de Spearman de 0.008 que representa una correlación positiva débil.
Las finanzas verdes y de carbono en el sector productivo forestal de honduras: Un análisis crítico de la legislación ambiental nacional e internacional
Authors: Meléndez Moncada María Magdalena
Published: February 2024

En este estudio se realiza un análisis crítico de los instrumentos jurídicos vigentes que regulan las condiciones en que se conforman, evolucionan y consolidan las finanzas verdes y de carbono en el sector productivo forestal de Honduras, y se establece su viabilidad, impacto y evolución desde el punto de vista crítico legal, identificando sus efectos y experiencias, como medio para definir una estrategia y propuesta legal que partiendo de la realidad, nos conducirá a una óptima implementación de las finanzas verdes y de carbono en el sector productivo forestal hondureño. Se realizó una investigación bibliográfica y de campo, de tipo analítica-descriptiva, que recogió además del estamento legal en materia ambiental, la opinión de los actores principales relacionados con el sector forestal productivo del país, obteniendo como resultado datos que ponen en evidencia la necesidad de reformas en la legislación nacional y el redireccionar de las instituciones y dependencias estatales; el nivel de interés por parte de las autoridades, industriales de la madera y demás profesionales relacionados; el nivel de aplicabilidad de las leyes; y finalmente una estrategia y propuesta participativa que avalará el desarrollo de las finanzas verdes y de carbono en el sector forestal de Honduras.
Planning The Future and Achieving Success Through Self- Management (Merencanakan Masa Depan dan Mencapai Kesuksesan Melalui Manajemen Diri) Pada Siswa Kelas XII SMA
Authors: Defri Rahman  , Sopi Sapriadi  , Fitratur Rahmah Agustina  , Mutia Alius  , Sultani
Published: February 2024

Pengabdian Masyarakat merupakan salah satu aspek penting dari Tri Dharma Perguruan Tinggi. Melalui pengabdian kepada masyarakat, Perguruan Tinggi bisa menjadi Menara air yang siap menyebarkan ilmu pengetahuan dan teknologi serta berkontribusi secara aktif dalam kehidupan masyarakat. Generasi Z yang merupakan kelompok individu yang lahir antara tahun 1997 dan 2012, memegang peran penting dalam merencanakan masa depan mereka sendiri dan mencapai kesuksesan melalui pengelolaan diri. kegiatan pengabdian masyarakat ini bertujuan untuk mengedukasi Gen Z dalam hal ini adalah Siswa SMA Kelas XII untuk merencanakan masa depan dan mencapai kesuksesan melalui pengelolaan diri. Metode pelaksanaan pengabdian masyarakat ini melalui metode ceramah, diskusi, dan tanya jawab. Hasil dari pelaksanaan kegiatan ini dapat meningkatkan pengetahuan dari Siswa SMA Kelas XII SMA Negeri 5 Payakumbuh. Sehingga siswa dapat membuat perencanaan untuk masa depannya.
Pendampingan Restorasi Kegiatan Keagamaan Masyarakat Desa Tertinggal Berbasis Masjid
Authors: Muhyiddin Moh. , Ernawati  , Baroroh Sunanul
Published: February 2024

Currently, there are no religious activities at the mosque in the Gendono sub-village. This results in a lack of knowledge about the religion of the residents of the Gendono sub-village. Seeing this, the dedication of mosque-based religious activity restoration aims to reactivate the activities of learning to recite the Qur'an and fiqh studies for children and adolescents, as well as increase the ability of teaching cadres to have a qualified capacity for religious material. The method used is Service Learning (SL), which means that in community service, the service team also carries out activities together with the community, but not specifically related to certain teaching. The results obtained are First, there are religious activities at the Gendono Mosque which are attended by teenagers and the community of Gendono sub-village. Second, there is a qualified successor to religious studies in the mosque so that it can be useful to fill the void of mosque activities and increase the religious ability of the Gendono sub-village community.
IMPACTO DE LA RESILIENCIA EN LA GESTIÓN DE NEGOCIOS CONYUGALES: UN ENFOQUE DESDE LA PERSPECTIVA DE LAS MUJERES VÍCTIMAS DE VIOLENCIA
Authors: Machaca Mamani Julio César , Cahuana Lipa Rocio , Silvera Barco Fabio Agapito , Legua Gordillo Flor Angélica , Alfaro Munares Karina Rocio , García Fernández Mario Natividad
Published: February 2024

Objetivo: Analizar los estudios de resiliencia dentro de la gestión de negocios y el papel de las mujeres víctimas de violencia desde la literatura científica publicados entre 2017 al 2020. Metodología: Artículo de revisión, peculiar por tratarse de una investigación de tipo básica descriptiva. Se caracteriza por la delimitación del área temática específica que aborda la resiliencia en situaciones difíciles y que al mismo tiempo se ve complementada con la búsqueda exhaustiva de bibliografía y artículos virtuales. Resultados: De todos los artículos revisados en las diversas bases electrónicas, se dio cuenta que de Scopus fueron 7610; Science Direct 1466; Scielo 90 y Ebsco 58, haciendo un total de 9224. Eliminando documentos que no se sujetaban a lo solicitado, logrando un parcial de 45 que al tamizarse generó 15 investigaciones seleccionables de orden cualitativo, mixtos, correlacionales, teóricos, exploratorios, comparativas, descriptivas, y transversales para proceder con las revisiones sistemáticas. Se pudo revelar información en cuanto al autoconcepto, violencia doméstica, intrafamiliar, género y de pareja; crecimiento y superación postraumáticas, victimización, disfunciones psicológicas, resiliencia, violencia a la intimidad, afrontamiento entre otros factores significativos. Conclusión: La práctica de la resiliencia como herramienta blanda, motiva la superación de episodios de violencia y cuadros traumáticos al interior de los negocios familiares o de sociedad conyugal.
EFICIENCIA DIGITAL: E-GOVERNMENT EN LA GESTIÓN ADMINISTRATIVA DE LA MUNICIPALIDAD PROVINCIAL DE PUNO, PERÚ
Authors: Melissa Zela Paricahua , Hinojosa Mamani Jhonatan , Benito Pepe Calsina Calsina , Maribel Erika Cahuana Huichi , Martin Lorenzo Samo , Catacora Lucana Edison , Javier Elías Mamani Gamarra
Published: February 2024

Objetivo: Determinar la relación que existe entre el e- government y la gestión administrativa en la Municipalidad Provincial de Puno- 2023. Métodos: El enfoque de investigación es cuantitativo, diseño no experimental – transeccional y nivel descriptivo – correlacional. La población de estudio asciende a 138912 habitantes del área urbana de la ciudad Puno que realizan con regularidad los trámites administrativos en la Municipalidad Provincial de Puno. El tipo de muestreo utilizado fue probabilístico de tipo aleatorio simple, siendo la muestra de 266 usuarios. La técnica que se utilizó en el estudio es la encuesta e instrumento el cuestionario, para el contraste de hipótesis se manejó la prueba estadística de Rho Spearman. Resultados: Los resultados de las pruebas estadísticas de Rho Spearman indican que existe una relación significativa entre las variables de estudio, específicamente entre la fase de presencia y la gestión administrativa, la fase de interacción y la gestión administrativa, la fase de transacción y la gestión administrativa, así como la fase de transformación y la gestión administrativa en la Municipalidad Provincial de Puno-2023. Conclusión: En la Municipalidad de Puno en 2023, las fases del gobierno electrónico y la gestión administrativa están vinculadas. Aunque el portal web tiene calificaciones regulares, se observa mejora en servicios digitales, especialmente en la interacción y transacción en línea.
EFECTOS DEL CHATGPT EN LA FORMULACIÓN DE PROYECTOS DE INVESTIGACIÓN CIENTÍFICA EN LA EDUCACION SUPERIOR UNIVERSITARIA
Authors: Jhonatan Hinojosa Mamani , Benito Pepe Calsina Calsina , Edison Catacora Lucana , Juan Carlos Callomamani Callomamani , Rebeca Alanoca Gutierrez , German Roberto Quispe Zapana , Javier Elías Mamani Gamarra , Vidal Avelino Quispe Zapana
Published: February 2024

Objetivo: Determinar los efectos del ChatGPT en la formulación de proyectos de investigación científica en la educación superior universitaria. Métodos: El estudio se enmarca dentro del enfoque de investigación cuantitativa de diseño pre experimental. La población está compuesta por 36 estudiantes del II semestre de la Maestría en Investigación y Docencia Universitaria de la Escuela de Posgrado de la Universidad Nacional del Altiplano, Puno – Perú. La muestra se determinó por medio del muestreo no probabilístico por conveniencia, siendo la muestra el total 36 estudiantes del II semestre de la Maestría en Investigación y Docencia Universitaria de la Escuela de Posgrado de la Universidad Nacional del Altiplano, Puno – Perú, a quienes se realizó la prueba de entrada y salida aplicando la inteligencia artificial ChatGpt. Resultados: La adopción de ChatGPT en la formulación de proyectos de investigación transformó drásticamente las competencias de los participantes, elevando del 2.8% al 80.6% aquellos en nivel alto y eliminando el nivel bajo post-intervención, demostrando el efecto positivo en la formulación de proyectos de investigación con IA. Conclusión: El ChatGPT influye positivamente en la formulación de proyectos de investigación científica en la educación superior universitaria.
Perception on E-Wallet Application among Night Market Consumer in Lembah Klang
Authors: Nur Badriyah Kamarul Zaman  , Muhammad Haziq Hasbullah Azmi  , Wan Noranida Wan Mohd Noor
Published: February 2024

The COVID-19 pandemic has led to an increased reliance on online transactions in Malaysia, with E-wallet and Apple Pay being the preferred methods of payment for consumers. These digital payment options offer convenience and eliminate the need to withdraw physical cash. The surge in E-wallet usage is driven by attractive incentives like government aid programs, cash back offers, discounts, and loyalty points. However, despite the introduction of E-wallets in 2017, their adoption remains limited due to a lack of awareness among consumers and businesses. Therefore, this research explores perception on acceptance of E-wallet as payment option among consumers specifically focusing on their impact on consumer behavior at night markets. This quantitative study used multiple regressions on a sample of 393 respondents. The key findings indicate that “Appearance Easy to Use”, “Security Perception”, “Function Perception” and “Attitude” have a significant relationship on the perception of E-wallet application among night market consumer in Lembah Klang. E-wallets have the potential to transform the night market experience by providing convenience and reducing the need for cash withdrawals at ATMs. As Malaysia's population continues to grow, the government's push for mobile payments is expected to drive the widespread adoption of digital transactions in the country.
Analysing the Project Delay Causes and Improving Quality using Multi-Project Strategies
Authors: Nur Amirah Syahirah Azman  , Faizir Ramlie  , Wan Zuki Azman Wan Muhamad  , Mohd Yazid Abu  , Nolia Harudin
Published: February 2024

Numerous reasons for project delays from the viewpoints of the client and the contractor have only been somewhat studied. The aim of this paper is to recognize the delays' underlying causes and issues ways to reduce them considering the progress of the project. Consequently, 106 contractor-side experts and 82 client-side experts in project management were the subjects of this study. The clients and contractors gave the same importance to factors like poor communications and governmental approvals in projects that were successful (had a time delay of less than 10%). Similar mitigating techniques including rigorous project monitoring, skill development training, and effective logistics planning were advised. When projects were unsuccessful (with a time delay of more than 10%), they displayed a wide range of behaviours.
Opportunities and Challenges of Malaysia Cross Border Inland Port
Authors: Wan Nadzri Osman  , Hendrik Lamsali  , Halim Mad Lazim  , Mohamed Najib Salleh  , Rosman Iteng  , Michael Tio Boon Yiaw
Published: February 2024

Malaysia is a country that has borders close to 3 countries, namely Thailand, Indonesia and Singapore. This strategic location helps Malaysia take advantage of cross-border trade involving these three countries. As a result, there are several sea and land ports built near the borders of the three countries to facilitate international trade with neighbouring countries. However, the facilities available at the sea and land ports near the neighbouring country are seen to be reaching the maximum level of utilization to accommodate the existing cargo capacity that is transited before being sent to the nearby sea port. This study was conducted for the purpose of identifying the opportunities that exist in developing international trade activities in addition to looking at the challenges being faced by key stakeholders involving this cross-border trade. This study was conducted qualitatively involving the collection of research information through interviews conducted with several port personnel. The findings of the study were analysed manually through thematic methods. The study found that, in terms of trade opportunities, some provinces in the south of Thailand are highly dependent on the ports available in the country given the short travel distance to ship their trade goods to the port compared to their own country. However, inland ports in our country have almost reached the maximum level of use. In addition, this study also found that there is a shortage of ships entering the port of Penang due to the demand for ships rising sharply for trade routes involving countries outside Asia. In this regard, Malaysia is seen to be able to become a major trade hub involving Southeast Asian countries if we are able to improve existing facilities of ports in this country as well as reduce bureaucracy for the purpose of increasing existing productivity to speed up the clearance process.
Application of Response Surface Methodology Experimental Design to Optimize Tribological Lubrication Characteristics
Authors: M. Mazwan Mahat  , Farah Nabillah Kazwa  , S. Kasolang  , Nurul Nadiah Mohd Kamaldin
Published: February 2024

Total Knee Replacement (TKR) has become a standard operation for patients with joint disorders. Despite the fact that the number of procedures is increasing all the time, the short service life of implants remains a persistent concern for researchers. Understanding lubrication may aid in explaining tribological processes that lead to replacements that last well into the third decade of service. Likewise, wear and friction in total knee replacement (TKR) components are among the most common causes of implant failure. As a result, this study will evaluate the feasibility of using the polymer Polylactic Acid (PLA) for cartilage replacement in Total Knee Replacement (TKR) using plant-based oils as lubricants. Furthermore, the modifier will be added to plant-based oils as an additive to make them analogous to human bodily fluids. The present paper is applying the Box-Behnken design to optimize the performance and mechanical responses of bio-lubricants toward Polylactic Acid (PLA) as a tibial insert for cartilage replacement in Total Knee Replacement (TKR). The main objective of this paper is to develop an optimized method for the selection of plant-based oil parameters using Response Surface Methodology (RSM). A three-level three-factor Box-Behnken design (BBD) was used to investigate the interactions between the essential factors comprising load (45 kg to 90 kg), speed (60 rpm, 90 rpm and 360 rpm), and concentration (0ml, 5ml and 10ml) of bio-lubricants to accomplish the indicated prospect of using polymer for cartilage replacement. Canola oil, castor oil, and sunflower seed oil are considered vegetable oils, whereas Hyaluronic Acid (HA) is the friction modifier. The parameters are used to create a Box-Behnken design for predicting lubricant anti-wear qualities stated in terms of coefficient of friction, wear rate and frictional force as determined by the pin-on-disk experimental procedure. As a result, the optimization using RSM successfully interpreted the experimental data, according to the analysis of variance, with coefficients of determination of R2 = 0.91 and adjusted R2 = 0.77. The Coefficient of Friction (CoF) and wear rate were investigated following tribological testing. Castor oil had a lower coefficient of friction than canola and sunflower seed oil, according to the findings. In terms of friction reduction, castor oil surpasses canola and sunflower seed oil.
Preliminary Study on Recirculation Vortex and Turbulence Inside Ultra Low Head Pico Hydro Cross-Flow Turbine using Computational Fluid Dynamics Method
Authors: Aji Putro Prakoso  , Warjito  , Budiarso  , Ahmad Fudholi
Published: February 2024

Cross-flow turbines (CFT) have evolved since the first investigation in 1949. After some use of computational fluid dynamics (CFD) simulations in CFT development, it is known that there might be a recirculation vortex inside the CFT. At the CFT internal flow, some significant turbulent flow occurred, which is indicated by a higher value of turbulence kinetic energy (TKE). However, the effect of the turbulence inside this turbine still evokes many questions. This study ran Several CFD simulations on three CFT blade designs. One of them has already been tested experimentally, and the others are the modifications of the first design. There are two scenarios for the simulations: run in a traditionally two-phase condition or in a submerged state to maximize the usage of the potential head. This study found that the existing configuration has a contra-directional permanent recirculation, dead area, and high turbulency spot, which induce a higher loss. Meanwhile, all those phenomena could be minimized under the modified blade condition. The modification improves multiphase CFT performance by relatively 22.2% efficiency and 16.6% relative escalation for the submerged condition. However, the expected recirculation flow found in the prior study was still not found in this study. Another modification is still needed.
Magnetohydrodynamic Nanofluid Flows Passing through a Smart Fabric under the Influence of Magnetic Field and Radiative Flux
Authors: Zaitun  , Basuki Widodo  , Chairul Imron
Published: February 2024

The study of MHD have been widely on topics with complex problems. Just as this topic involves inductive polymers or smart fabrics for engineering in machinery or protective equipment. The smart fabrics can be involved in MHD studies become a useful material. The smart fabric is a sheet of inductive polymer that can be an influence in the MHD analysis as well as a parameter that can be considered. In this study, the MHD of nanofluid namely Iron-(III)-oxide flows past in smart fabrics under influence of magnetic field and radiative flux is studied by constructing a mathematical model and then the model solved numerically using the Keller-Box scheme. The effect of Mixed Convection and stretching parameter is considered on the model. Numerical simulations were carried out to examine the effect of the parameters, are obtained the profile of velocity and temperature increase when the magnetic and stretching parameters increases, the velocity profile and temperature decreases when the Prandtl number are increases, the profiles of velocity are decreases and temperature increases when porosity variable and volume fraction parameter’s value increases, and the profile of temperature increase when the mixed convection’s value and the radiation parameter increases.
Improved Operation and Method of a Reaction Turbine for Enhancing Net Head
Authors: Mahesh Kurulekar  , Krishnaswamy Kumar  , Shardul Joshi  , Maya Kurulekar
Published: February 2024

In a reaction turbine, the amount of energy harnessed depends on discharge and net head. The two variables are mutually exclusive or in which one variable is dependent on another and in which the increase of head will decrease the flow required by the hydraulic turbine or vice versa. There is a need for improving the existing hydropower system and the method for enhancing the net head of a reaction turbine is essential. The present invention will hold the key in novelty during the design and excavation of tail race channel or for Renovation, Modernization and Uprating (RMU) of the existing old hydro power plants. The proper redesign of tail water channel, selecting suitable width, depth and by adopting flow regulating means will yield improve the net head substantially and thereby saving of discharge to an extent. The present invention enables to improve net head and saves discharge considerably, thereby enhancing the capacity factor of the hydro plant. The novelty and the innovation is granted an Indian patent for the method of enhancing the net head of a reaction turbines.
Hydrodynamic Load Effect on Composite Polymer Cold-Water Pipe Joint in Ocean Thermal Energy Conversion
Authors: Dodi Sofyan Arief  , Basuki Wirjosentono  , Jaswar Koto  , Muhammad Dalil  , Abdul Khair Junaidi
Published: February 2024

The cold-water pipe in Ocean Thermal Energy Conversion (OTEC) is a very important part of the process of producing electrical energy. The cold-water pipe functions to convey cold water with a temperature of 5°C from a sea depth of >500 m to the sea surface. The cold water in the pipe is allowed to experience a temperature increase of <3°C so that it can be used to dilute the ammonia in the condenser. The use of polymer composites as cold-water pipe materials is a challenge because the hydrodynamic load from seawater currents fluctuates in a direction perpendicular to the position of the pipe. The pipe length reaches >500 m consisting of several pipes connected using the Friction Stir Welding method. This research was conducted to determine the effect of the hydrodynamic load of seawater currents on Friction Stir Welding (FSW) connections, the stress distribution in pipe joints, and the thickness of pipes that are safe to use as OTEC cold water pipes. In addition, simulations were carried out using Inventor software on pipes with a length of 500 m, a diameter of 4 m, and variations in thickness from 18 cm to 30 cm which produced von Mises yield stress and stress distribution at different joints at each pipe thickness. In pipes with a thickness of less than 20 cm, the stress and stress distribution are purely influenced by the hydrodynamic load of seawater currents. Meanwhile, in pipes with a thickness greater than 24 cm, the stress that occurs in the pipe is influenced by the current and weight of the pipe. In pipes with a thickness greater than 24 cm, the stress in the pipe is concentrated in the middle of the joint which is the critical part of the pipe and is the initial point of failure. It was found that at a pipe thickness of 22 cm, the stress was distributed almost evenly because the stress caused by seawater currents was reduced by the heavy load of the pipe. So, from the simulation of cold-water pipes with polymer composite materials that experience hydrodynamic loads from seawater currents varying in thickness from 16 cm to 30 cm, it is recommended to use a pipe thickness of 22 cm so that the pipe connection is safer as an ocean-based OTEC cold water pipe application.
Kinetics Modelling of Moringa Oleifera Leaves using Microwave Drying
Authors: Nabilah Abdul Samad  , Dayang Norulfairuz Abang Zaidel  , Nor Alafiza Yunus  , Ida Idayu Muhamad  , Yanti Maslina Mohd Jusoh  , Daniel Joe Dailin  , Joko Sulistyo
Published: February 2024

The drying kinetics of (Moringa Oleifera) leaves were studied at various microwave power levels (300, 500, 800, and 1000 W) using an existing drying mathematical model. The best-fitted mathematical models of the drying curves were determined by considering the coefficient of determination (R2), SSE, and RMSE based on the experimental drying data of moringa leaves. For drying M. oleifera leaves, three out of six models exhibited the optimum drying behaviour with the highest R2 and lowest SSE and RMSE values, with R2, SSE, and RMSE values ranging from 0.92-0.98, 0.09-0.3, and 0.06-0.10, respectively. Besides, the effective moisture diffusivity of moringa oleifera leaves during microwave drying varied from 1.56 × 10-8 to 5.49 × 10-8 m2/s. The values of D0 and Ea from microwave drying of Moringa oleifera leaves were estimated as 9.0 x 10-8 m2/s and 17.53 W/g.
Effect of Cross-Sectional Depth on Horizontal and 30° Slop Spillway Open Channel Pico Hydro Cross-Flow Turbine Efficiency
Authors: Aji Putro Prakoso  , Budiarso  , Warjito  , Ahmad Fudholi  , Deny Bayu Saefudin  , Chairul Umam Rosyadi  , Aris Suryadi  , Ghalya Fikra  , Yadi Radiansyah  , Yusuf Suryo Utomo
Published: February 2024

Harvesting the kinetic energy from the small dam’s spillway downstream flow in agricultural areas is interesting. On the other hand, a cross-flow turbine (CFT) is a unique impulse turbine because it works at a higher specific speed, which means this turbine works at a lower head and higher water flow rate. Thus, there is an opportunity to use a CFT to harvest the energy in the spillway. There are two possible scenarios: at the flat horizontal and the 30° slop flow. Several computational fluid dynamics (CFD) simulations were conducted to test the hypothesis. The simulations were performed with five variations of the ratio between the cross-sectional depth parameter of the spillway’s flow before approaching the turbine for each scenario. The total head in the present study case is 3.0 meters with 120 l/s of water discharge. The simulations used ANSYS® Fluent™ for 2D CFD simulation. The tests found that the CFT could attain 80.36% efficiency. Moreover, some water flows over the turbine at a higher rotational speed, leading to a significant loss in turbine performance, called potential loss. This finding indicates that the CFT could harvest the spillway’s flow kinetic energy when the flow is not too deep.
Effect of the Turbulence Model on the Computational Results of a Lucid Spherical Rotor
Authors: Mabrouk Mosbahi  , Mariem Lajnef  , Mouna Derbel  , Zied Driss  , Emanuele Amato  , Calogero Picone  , Marco Sinagra  , Tullio Tucciarelli
Published: February 2024

Due to the excessive increase in the energy demand, renewable energy has become an alternative for electricity production for industrial and domestic needs. Water energy has received significant investment as a sustainable and clean energy source. Lucid spherical rotors, a kind of hydro-power converter, are cross flow rotors designed to be mounted within a pipeline in order to gather excess energy available in gravity-fed water pipelines. This paper focuses on the effect of the numerical model parameters choice, namely the turbulence model, on the Lucid spherical rotor hydrodynamic characteristics. Numerical simulations were carried out through Ansys Fluent software 17.0 using the unsteady Reynolds-Averaged Navier-Stokes (URANS) equations. Four turbulence models: RNG k-ε, Realizable k-ε, SST k-ω and transition SST were tested. Performance characteristics in terms of torque and power coefficients in addition to hydrodynamic features of the flow around the considered rotor were analyzed. The adopted numerical model was validated based on previous experimental findings from the literature. It was found that the realizable k-ε model showed a good agreement with experimental results. Thus, it was adopted for the Lucid spherical rotor simulation. The obtained findings could provide further direction for researchers to use the Lucid spherical water turbine.
Characterization of Distillation and Redistillation Product of Coconut Shell Liquid Smoke at Various Temperatures
Authors: Novi Caroko  , Indah Hartati
Published: February 2024

This study investigates the impact of distillation temperature on phenol content in coconut shell liquid smoke, a product derived from pyrolysis and subsequent condensation processes. Liquid smoke, renowned for its versatile applications including preservation, antioxidation, antiseptic, and antibacterial properties, necessitates distillation for both quality enhancement and safety. The research comprises a two-stage distillation, featuring 11 temperature variations (100-150°C) in the first stage and 9 variations (75-155°C) in the second stage. Characterization involves pH assessment and Gas Chromatography-Mass Spectrometry (GC-MS) analysis to identify chemical components. The pH range in the initial distillation stage spans 1.18-1.30, and the second stage ranges from 1.11-1.39. GC-MS analysis of raw coconut shell liquid smoke reveals 25 components, including phenol, furan, ketone, acid, alcohol, benzenediol and derivatives, alkyl aryl ether, deoxycytidine, and silicone grease. GC-MS evaluation is conducted on products of the first stage at 125 and 135°C, and the second stage products at 145 and 155°C. In the first distillation stage, liquid smoke contains phenol and assorted compounds. Conversely, the second stage yields purer phenol compounds. The findings suggest potential applications of the redistillation product as raw material in food preservation, antiseptics, and insecticides.
Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution
Authors: Noorul Hudai Abdullah  , Muhammad Azreen Mohd Azmi  , Muhammad Afham Mohd Zaidi  , Nur Balqis Nasaruddin  , Nur Atikah Abdul Salim  , Nur Hanis Hayati Hairom  , Muhammad Faris Abdul Hadi  , Mohamad Ali Fulazzaky
Published: February 2024

Phosphorus is one of essential elements for sustaining life largely through phosphate, a compound containing the phosphate ion, PO43−. However, excessive phosphorus concentrations will cause eutrophication and this condition is considered as an environmental issue. The phosphorus sources are commonly from human activities; for instance, detergents, fertilisers, and industries. Although various adsorption techniques have been applied to remove phosphorus in water, the effect of different particle sizes of calcined marsh clam shells on phosphate removal has not been fully investigated, along with its adsorption kinetics and isotherms. This study investigates phosphate removal from synthetic solution onto calcined marsh clam shells (CMCs) with 5 different particle sizes: 0.075–0.15, 0.15–0.30, 0.30–0.60, 0.60–1.18, and 1.18–2.36 mm. The batch experiment used 2 g of adsorbent and synthetic potassium dihydrogen phosphate (KH2PO4) solution. The adsorbent size of 0.075 to 0.15 mm showed the highest removal (100%) efficiency due to high adsorption rate. The experimental data were further analysed using kinetics and isotherm models; the data fitted well with pseudo-second-order kinetic model (R2 = 0.9986) and Freundlich isotherm model (R2 = 0.8404). The potential of marsh clam shells as an adsorbent for phosphate removal in water is significant for future applications in wastewater treatment technology.
Determinants of international air passenger travel demand in Nigeria: cointegration and causality analysis
Authors: Akinyemi Yingigba
Published: February 2024

This paper examines the determinants of international air passenger travel demand in Nigeria using annual data from 1982 to 2019. Autoregressive distributed lag approach was employed to analyse short- and long-run relationships between the variables while Granger causality test was conducted to determine the direction of causality. Total real trade and economic growth are major factors positively influencing air travel demand in the short- and long-run. Contrary to findings in the literature, foreign direct investment impact air travel negatively in the long-run but has a positive effect in the short-run with 1-3year lag. Real exchange rate is found to reduce air travel demand in the short-run. The result indicate a bidirectional Granger causality between air travel and total real trade, and between air travel and economic growth. Infrastructure that will support increase in demand for international air passenger travel due to economic growth are required.
Prioritizing crisis management approaches in the airline industry. Evidence from Greece
Authors: Chrysafis Konstantinos , Papadopoulou Georgia
Published: February 2024

The global airline industry has faced a considerable downturn, because of the recent COVID-19 pandemic crisis. Numerous measures had to be taken from governments and the airline industry itself in order to survive the pandemic crisis. The Greek airline industry is the main case of this study. The main goal of this study is to prioritize the appropriateness of crisis management approaches in the domestic airline market. To achieve that, Fuzzy MCDM (Multi-Criteria Decision Making) is employed (consequently a set of criteria and their weighting). The criteria are extracted using the thematic analysis and synthesis method gathering data from the international literature and news. The MCDM analysis is implemented in a fuzzy setting due to the inherent uncertainty in the airline market. The results of this study demonstrate that the actions better characterizing the crisis operations of the domestic airline companies fall under the knowledge-based management approach.
THE HYPOSTASIS OF JESUS AND HIS REFLECTIONS FOR CURRENT BELIEVERS
Authors: Setyobekti Andreas Budi
Published: February 2024

The emergence of several cults that exist as evidence of the difficulty of understanding the concept of Christology as a whole. Therefore, theologians have tried to explain the concept of Christology using a tool, namely the concept of Hypostasis. The concept of the Hypostasis of Jesus is not easy, especially when describing the person of Jesus in terms of his existence as God and man. It is not too easy to understand the concept. Therefore, researchers are trying to find and see the background of concept building and its implementation for believers. From the background description, the following questions emerge: Is the concept of Jesus Hypostasis able to answer the different views on the divinity and humanity of Jesus? How understand the background concept of Jesus' Hypostasis as a theological struggle and its implementation for believers? The research method used is qualitative by applying the theological systematic analysis method. The results of his research show (i) The background of the emergence of heresies that existed at that time encouraged the emergence of the Jesus Hypostasis Concept as an explanatory model for the Christology concept, especially in explaining the divinity and humanity of Jesus; (ii) the concept of Hypostasis as an answer to the unity of nature between God and man in the person of Jesus, without overlapping nature and how it works; (iii) An effort is needed to explain and implement the concept of Hypostasis to believers.
IMAM SEBAGAI PEMIMPIN PUBLIK ANALISIS BIOGRAFI ZERUBABEL MENURUT KITAB EZRA DAN IMPLEMENTASINYA BAGI PEMIMPIN GEREJA MASA KINI
Authors: Baskoro Paulus Kunto
Published: February 2024

Leadership is central to all church decisions and develoments. Strong leadership will bring great impact to the church. Often what happens, leaders only focus on structure and not on function. The leadership sungction will be seen from the work produced. A trus leader is a leader who always focuses on paying attention to the spiritual life and relationship of the people wirh God. Zerubbabel becomes an important part in this writing, because the writer will conduct a study of the person of Zerubabel who carried out his function of the public leaders who have a big impact on the nation of Israel. Today it is necessary to have leaders who have function of the priesthood according to the of God’s Word. This writing uses descriptive literature method. The goal is that through writing, namely First, every church leader can carry out leadership function effectively and not just structurally. Second, every church leader really pays attention to the spiritual life of the people. Third church leaders who have clear goals in developing God’s church
Potassium Mobility Potential of Forest Soil In Kurdistan Region, Iraq, As Estimated By Quantity- Intensity (Q/I) Relationships
Authors: Mam-Rasul Ghafoor , Sheikh-Abdullah Shuela
Published: February 2024

This study aimed to assess potassium(K) 's potential mobility for some soils located in the Kurdistan Region of Iraq. Five soil samples were collected from a depth of (0-30) cm. For each sample, 5g of soil was equilibrated with 50 ml of 0.01 M CaCl2, amended with different K concentrations, and incubated for 24 h at 298 Kelvin. The supernatant was filtered, and K, Ca, and Mg were determined. Potassium exchange equilibrium was calculated from quantity-intensity (Q/I) isotherms. Mean AReK values for all studied soils ranged between 2.4x10-3 to 3.6x10-3(mol L-1)1/2, which reveals that K was preferentially held at inner potions. The amount of labile K(KL) ranged from 0.479 to 1.191cmolc kg-1 in studied soils. The highest value of KL was in Kanypanka while the lowest value was in Goizha. The potential buffering capacity (PBCK) was between 619.56 and 857.37 cmolc kg-1(mol L-1) -1/2. All studied soils were characterized by low percent K saturation and a high ability to replenish K concentration in the soil solution. Gapon selectivity coefficient was relatively high and ranged from 5.64 to 7.88 L mol-1. Higher values of KL indicate a greater K release into the soil solution. Such a high affinity of K for the solid soil phase was attributed to both the elevated organic matter content in these soils and their strong buffering capacities.
A GIS-based AHP Method for Groundwater Potential Zone Assessment: A Review
Authors: Sulaiman Wassfi , Karimi Hazhir , Mustafa Yaseen
Published: February 2024

Scientific and academic research and studies are trying to present a multi-range of techniques and methods focusing on groundwater pollution, potentials, assessment, and prediction. The most significant freshwater resource is groundwater, and numerous researchers are working to learn as much as they can about this resource in order to promote sustainable development. This review aims to create an overview of groundwater analysis and forecasting methods. The study is based on the need to select and group research papers into the best-defined methodological categories. The article gives an overview of recent advancements in groundwater potential zone analysis approaches, as well as ongoing research objectives based on that overview. This review has reviewed papers and research published in the last decade (2010–2022), depending on the data sources from the global online database, which could obtain many papers and research studies studying groundwater potential zones and other aspects related to groundwater.  The aim is to review multiple types of research and papers on determining groundwater potential zones by applying the best techniques and selecting the most suitable factors that affect groundwater potential zones.
Potential of Multispectral Satellite Data for Superficial Iron Oxide Detection in Sulaimaniyah, Iraqi Kurdistan Region
Authors: Al-Quraishi Ayad , Mustafa Banaz , Gopinathan P , Divya Y
Published: February 2024

This study primarily investigates the total (Fe) iron presence in Sulaimaniyah Governorate, the Iraqi Kurdistan Region (IKR), which has an abundance of iron mines. Spatial quantification and frequent monitoring of mineral existence in the soil are essential in the mining regions. To achieve this goal, a remote sensing technique was utilized to predict soil minerals, particularly iron, in the study area using a multispectral satellite image, Landsat-7 Enhanced Thematic Mapper Plus (ETM+).  A robust methodology was perceived and developed from image processing to estimate and map iron oxide-rich soils, and the soil’s spectral indices were obtained after algorithms were applied in processing the bands of the Landsat image. Soil samples were collected and analyzed in the laboratory to determine the chemical, physical, and mineralogical characteristics of soils. Correlation coefficients were carried out between soil properties and spectral band values retrieved from image analysis to examine the band potentials of Landsat. The statistical results showed that there was a significant relationship between the 3rd band of the ETM+ image and each of the total iron (R2 = 0.643), the free iron oxide (R2 = 0.659), and sand particles (R2 = 0.561). The predicted soil mineral maps were generated for the study area to visualize the study site's soil characterization and total iron spread. This study's results could help primarily identify the spatial distribution of some soil properties in Sulaimaniyah, Iraq.
Agricultura e diversidade produtiva: um momento de reflexões e análises de dados
Authors: Santos Gesmar Rosa dos
Published: February 2024

O texto aborda, entre outros assuntos, os fundamentos e definições que deram suporte, dialogaram, criaram e continuam a sustentar as políticas públicas para a agricultura no Brasil.
Agricultura e agroindústria rural na região sudeste segundo dados do censo agropecuário de 2017
Authors: Santos Gesmar Rosa dos , Santana Adrielli Santos de
Published: February 2024

É permitida a reprodução deste texto e dos dados nele contidos, desde que citada a fonte. Reproduções para fins comerciais são proibidas.
Breve reflexão sobre a simultaneidade de tempos e espaços na dimensão transfronteiriça do Brasil
Authors: Nagamine Liria Yuri
Published: February 2024

Este texto destaca a complexidade da fronteira brasileira e sua multiplicidade de significados e interpretações revelados por diversos atores sociais ao longo do projeto "A Política Nacional de Desenvolvimento Regional (PNDR) e a Faixa de Fronteira". Observa-se que as políticas públicas muitas vezes falham em compreender adequadamente a dinâmica e as necessidades das regiões fronteiriças, resultando em um sentimento de esquecimento e isolamento entre os habitantes dessas áreas. A pesquisa revela que a fronteira transcende sua dimensão geográfica, envolvendo interações sociais, culturais e econômicas entre diferentes nações, destacando a importância de uma abordagem mais abrangente por parte dos governos. As políticas públicas que mais se destacam para os participantes das oficinas estão relacionadas à saúde, segurança, educação e integração internacional, com ênfase crescente em defesa e segurança nos últimos anos. Utilizando a metodologia lefebvriana, o estudo busca contribuir para uma melhor compreensão e acompanhamento das transformações e necessidades das regiões fronteiriças pelos gestores públicos, reconhecendo a existência de múltiplos tempos e espaços nesse contexto transfronteiriço complexo.