bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of a Game-Based Learning: Airfield Lighting System Simulator Using Virtual Reality and Augmented Reality
Authors: Amalia Direstu , Suryan Viktor , Septiani Virma , Komalasari Yeti , Rizko Rio , Febriansyah Adha , Ristumanda Siti Salbiah , Kristiawan Muhammad , Hendra Oke
Published: June 2024

This study aimed to develop an innovative learning tool, AIRLIT, as an alternative practical system to enhance the learning of Airfield Lighting System (ALS) among Diploma IV Airport Engineering Technology (DIV-TRBU) cadets. The motivation behind this research stemmed from the necessity to address the challenges faced in ALS practical learning due to limited access to airport facilities. The research methodology is Waterfall Model, encompassing phases: analysis, design, implementation, system testing, and maintenance. User needs were thoroughly analyzed, particularly those of DIV-TRBU cadets, through observations and interviews with subject matter experts. The resulting AIRLIT application offers immersive simulations of ALS operations, including AR recognition of lighting tools/materials and VR visualization of airport layouts. This research succeeded in developing the AIRLIT application, and system testing revealed positive outcomes,  with the significant value for pair 1 is 0.000 < 0.05, so there is a difference in the average learning outcomes of cadets for the experimental class pre-test and the experimental class post-test. The significant value of pair 2 is 0.000 < 0.05, so there is a difference in the average learning outcomes of cadets for the control class pre-test and the control class post-test. The Independent sample test shows a difference in cadet learning outcomes between the learning model using AIRLIT and the conventional model, and this result indicates the effectiveness of AIRLIT in improving cadets' learning experiences and outcomes. Overall, this research underscores the significance of incorporating innovative technologies into educational practices, paving the way for enhanced learning experiences and outcomes in airport engineering training programs. The theoretical implication of this study lies in its contribution to integrating AR technology into educational settings, enhancing engagement and experiential learning. Practically, AIRLIT provides a valuable tool for ALS learning, addressing the limitations of traditional practical training methods.
Effect of Laser Distance Measurement for Fatigue Crack Detection on Aluminium Plate Using Laser Doppler Vibro-Meter
Authors: Hermanto Tino , Rudi Nasution Arya , Satria Habib , Hermasnyah Hermansyah , Rahmad Aldori Yopan , Bin Jenal Ruztamreen , Dullah Abd Rahman Bin , Mohamad Adly Zulqarnain bin
Published: June 2024

Fatigue cracks can occur because the material is unable to withstand the load applied repeatedly. A nonlinear vibroacoustic method was introduced to overcome this problem. This is because this method is one of the best solutions because it is suitable for detecting fatigue cracks which is sensitive enough to detect small cracks. The aim of the research is to determine the effect of laser distance measurements on fatigue crack detection using the vibroacoustic method. Therefore, there are steps or procedures that include test object preparation, tensile testing, dynamic tensile testing, and modal analysis. Three different vibration modes are selected to excite the low frequency modes. The vibroacoustic method is a method based on the propagation of high frequency sound waves in solid structures with low frequency excitation. The trained output signal will be converted from the time domain to the frequency domain supported by the use of MATLAB software. The analysis results show that there is a significant influence on the detection of fatigue cracks in aluminum using the vibration acoustic method. The analyzed data shows that measuring the laser distance will influence the crack detection process.
Fatigue cracks can occur because the material is unable to withstand the load applied repeatedly. A nonlinear vibroacoustic method was introduced to overcome this problem. This is because this method is one of the best solutions because it is suitable for detecting fatigue cracks which is sensitive enough to detect small cracks. The aim of the research is to determine the effect of laser distance measurements on fatigue crack detection using the vibroacoustic method. Therefore, there are steps or procedures that include test object preparation, tensile testing, dynamic tensile testing, and modal analysis. Three different vibration modes are selected to excite the low frequency modes. The vibroacoustic method is a method based on the propagation of high frequency sound waves in solid structures with low frequency excitation. The trained output signal will be converted from the time domain to the frequency domain supported by the use of MATLAB software. The analysis results show that there is a significant influence on the detection of fatigue cracks in aluminum using the vibration acoustic method. The analyzed data shows that measuring the laser distance will influence the crack detection process.
Identification of Landslide Hazard in Residential Area Kubang Tangah District, Sawahlunto
Authors: Andriani Andriani , Istijono Bambang , Alfito Alfito , Akmal Farid , Adji Bayu Martanto
Published: June 2024

The residential area in Kubang Tangah, Sawahlunto, is an area that has the potential for significant landslide hazard. With rapid residential growth and environmental change, risks to the security and well-being of residents are becoming increasingly prominent. This research aims to identify factors that trigger landslide hazard and analyze potential risks in the residential context of Kubang Tangah. Analysis of regional geotechnical and topographic characteristics, land use modeling, and review of the impact of human activities on slope stability. The analysis method uses the Plaxis 2D program to obtain slope safety factors in the Kubang Tangah residential area, Sawahlunto. The research results show that residential areas in Kubang Tangah have a high level of landslide risk, influenced by slope, soil type, and changes in land use. Varying rainfall levels significantly contribute to the potential for landslide hazard. Mitigation recommendations are suggested to involve wise land use changes, strengthening infrastructure, and increasing public awareness of the dangers of landslides.
Malaria Disease Prediction Based on Convolutional Neural Networks
Authors: AL Kafaf Dhrgam , Thamir Noor N. , AL-Hadithy Samara S.
Published: June 2024

This study delves into the investigation of the efficacy of Convolutional Neural Networks (CNNs) in identifying malaria through the examination of cell images. The dataset employed encompasses a total of 27,558 images, harvested from the renowned Malaria Cell Images Dataset on Kaggle, encompassing cells of diverse nature. The architectonics of the CNN model is meticulously devised, comprising of six blocks and three interconnected blocks, thereby rendering an efficient extraction of features and subsequent classification of the cells. Creative paraphrasing: Various strategies such as dropout, batch normalization, and global average pooling are artfully utilized to refine and fortify the model, ensuring its robustness and adaptability. In order to confront the challenge of diminishing gradient and facilitate the attainment of convergence, the activation function known as Rectified Linear Unit (ReLU) is ingeniously employed. Assessing the efficacy of the model via a perplexity grid produces outcomes. Exhibiting a precision rate of 99.59%, a specificity measure of 99.69%, an Sensitivity of 99.40%, F1 Measurement of 99.44%, and a Precision of 99.48, it showcases its capacity to effectively distinguish betwixt malaria-afflicted cells and unafflicted cells. The focal point of this research highlights the substantial potential of CNNs in facilitating the automated identification of malaria using image analysis. By harnessing their unique architecture and regularization techniques, CNNs have the capability to enhance the results and potentially bring about better outcomes in areas with prevalent cases of malaria.
A Comparison of Levelised Cost of Energy of Different Energy Sources for Irrigated Shallot Farming in Some Coastal Regions of Ghana
Authors: Abdul-Ganiiyu Saeed , Djangba Rosa Emefa , Dzebre Denis Edem Kwame , Quansah David Ato , Adaramola Muyiwa Samuel
Published: June 2024

This study assessed the technical and economic viability of Poldaw wind pumps for irrigates shallot cultivation in the Keta Municipality in Ghana. Technical analyses of 4 versions of the Poldaw pump is conducted to determine if it they can supply the water requirements for irrigated shallot farming. The Levelized Cost of Energy (LCOE) of wind energy for irrigation over a period of 20 years is also calculated and compared with that of grid electricity, diesel, petrol and premix fuels as alternative energy sources for irrigated shallot farming in the area. At a hub height of 10 m, the 5.0 m Poldaw was found to be capable of supplying the daily water requirements for irrigated shallot farming in the area. In addition, its LCOE is better than those of petrol, diesel and premix fuel. Grid electricity lost its slight advantage on LCOE when the Poldaw pump was assessed for hub heights of 12 m and higher. The findings of the study suggest that the 5.0 m Poldaw pump is a viable alternative to pumps powered by other energy sources currently used for irrigated shallot farming in the Municipality.
Modification of Load Calculation in The Dijkstra Algorithm to Achieve High Throughput and Low Latency on 5G Networks
Authors: Adiyanto Eko Kuncoro , Wahjuni Sri , Rahmawan Hendra
Published: June 2024

throughput for high-resolution remote video surveillance. 5G cellular network as today's most advanced wireless technology will be the perfect match for Agriculture 4.0 requirements. In its maturity process, the 5G network requires various optimizations, one of which is by making route algorithm calculation modifications in terms of determining the best route for a data packet from a data source to a data destination. To achieve this goal, it requires research in the form of experiments using network simulator. Software Define Network (SDN) as network programmability is used to modify route in Dijkstra algorithm calculation, and run several use case that simulate 5G network characteristic. By adding bandwidth utilization and latency parameters into the routing algorithm calculations, 5G requirements such as packet loss below 1% and latency below 5ms are successfully achieved.  These positive results may be further tested on real 5G networks, if in the future this research also gets positive results in testing on a real 5G network, then cellular network customers will be able to experience an increase in service quality.
Implementasi Assembler Edu untuk Meningkatkan Minat Belajar Siswa Kelas IX pada Materi Listrik Statis
Authors: Liska Berlian  , Fandi Muhammad Arfan  , Syakirah Azzahra  , Diah Eryulianti  , Titi Dewi Anggraeni
Published: June 2024

Minat terhadap proses belajar sangatlah krusial bagi siswa agar mereka dapat memahami materi yang diajarkan oleh guru. Faktor penentu signifikan yang mempengaruhi kegiatan belajar adalah semangat belajar siswa. Ketika siswa menemukan subjek menarik, mereka memusatkan perhatian mereka pada proses pembelajaran. Integrasi teknologi ke dalam pendidikan memfasilitasi pemahaman konsep yang lebih baik dan meningkatkan pengalaman belajar secara keseluruhan. Penelitian ini bertujuan untuk mengkaji pertumbuhan minat belajar materi listrik statis di kalangan siswa kelas sembilan melalui penggunaan media EDU Assembler berbasis Augmented Reality. Selain itu, berusaha untuk mengevaluasi efektivitas media EDU Assembler berbasis Augmented Reality dalam meningkatkan minat siswa kelas sembilan dalam mempelajari materi listrik statis. Penelitian yang dilakukan sebagai penelitian kualitatif deskriptif dengan refleksi kelas tunggal ini melibatkan populasi 33 siswa kelas sembilan. Pengumpulan data menggunakan lembar kuesioner, dan statistik deskriptif dan inferensial digunakan untuk analisis. Hasil penelitian menunjukkan bahwa implementasi Assembler Edu Learning Media mampu meningkatkan minat belajar siswa, dengan perbaikan pada aspek minat (67,4%), aspek perhatian (67,1%), aspek perasaan (71,2% kebahagiaan), dan aspek keterlibatan belajar (64,8%).
Pengembangan LKPD IPA Berbasis Inkuiri Terbimbing untuk Meningkatkan Motivasi dan Hasil Belajar Siswa SMP
Authors: Sulistiyono Sulistiyono , Merti Triyanti
Published: June 2024

Penelitian ini bertujuan untuk (1) Menghasilkan LKPD IPA berbasis inkuiri terbimbing yang layak untuk meningkatkan motivasi dan hasil belajar siswa SMP, (2) Mengetahui peningkatan motivasi belajar siswa setelah mengikuti pembelajaran dengan menggunakan LKPD IPA berbasis inkuiri terbimbing, (3) Mengetahui peningkatan hasil belajar siswa setelah mengikuti pembelajaran dengan menggunakan LKPD IPA berbasis inkuiri terbimbing. Metode yang digunakan dalam penelitian ini merupakan jenis penelitian dan pengembangan atau Research and Development (R&D). Pengembangan dilakukan dengan mengacu pada model 4-D dengan tahapan Definition, Design, Development dan Dissemination. Hasil penelitian menunjukkan bahwa (1) LKPD IPA berbasis inkuiri terbimbing layak digunakan untuk meningkatkan motivasi dan hasil belajar IPA siswa SMP dengan hasil validasi ahli materi sebesar 25,5, ahli media 13 dan ahli bahasa 22 dengan kategori sangat baik; (2) peningkatan motivasi belajar siswa sebesar 0,31dengan kategori sedang dan (3) peningkatan hasil belajar IPA sebesar 0,92 dengan kategori tinggi.
Profil Kesulitan Belajar Matematika dan Kecenderungan Diskalkulia pada Siswa Sekolah Dasar
Authors: Arta Rajasha Herlambang  , Kamid Kamid , Yelli Ramalisa
Published: June 2024

Penelitian ini bertujuan mendeskripsikan profil kesulitan belajar matematika dan kecenderungan diskalkulia yang dialami siswa kelas III dan IV SD N 216/IV Kota Jambi, serta faktor faktor yang menyebabkan kesuliatan belajar pada siswa. Penelitian ini dilakukan di SD N 216/IV Kota Jambi pada Maret 2024. Data dalam penelitian ini diperoleh dari hasil tes kesulitan belajar dan kecendrungan diskalkulia dan wawancara kepada siswa (sebagai data utama) dan wawancara kepada guru wali kelas (sebagai data pendukung). Setelah dilakukan tes dan wawancara tersebut, data dianalisis dengan metode deskriptif kualitatif. Hasil penelitian ini menunjukkan bahwa siswa kelas III dan IV SD N 216/IV Kota Jambi masih mengalami kesulitan belajar dan mengalami kecenderungan diskalkulia. Dari 6 orang siswa yang dijadikan sampel dalam penelitian diketahui, 5 siswa diantaranya memenuhi indikator diskalkulia. Adapun faktor yang menyebabkan kesulitan belajar adalah faktor internal yang terdiri dari rendahnya minat dan motivasi siswa dalam pembelajaran dan faktor eksternal yang terdiri dari penggunaan metode pembelajaran yang masih menggunakan metode ceramah dan demonstrasi dan penggunaan media pembelajaran yang hanya menggunakan buku pedoman pembelajaran dan papan tulis sebagai alat dan media pembelajaran.
Analisis Kemampuan Pemecahan Masalah Matematis Siswa SMP Berdasarkan Gaya Belajar V-A-K (Visual, Auditori, Kinestetik)
Authors: Ayu Andri Yani  , Sofnidar Sofnidar , Roseli Theis
Published: June 2024

Gaya belajar siswa dalam mendapatkan ilmu pengetahuan memengaruhi kemampuannya ketika memecahkan masalah. kemampuan siswa tersebut tentu berbeda, dan siswa mempunyai cara yang berbeda untuk menyelesaikan masalah juga. Tujuan penelitian ini untuk menggambarkan mengenai kemampuan pemecahan masalah matematis siswa SMP berdasarkan gaya belajar V-A-K (Visual, Auditori, Kinestetik). Penelitian ini menerapkan jenis penelitian kualitatif dan pendekatan deskriptif. Serta dilaksanakan di kelas VIII C SMP N 9 Muaro Jambi dengan tahun ajaran 2023/2024 menggunakan sebanyak 6 subjek. Teknik pengumpulan data berupa tes kuesioner angket gaya belajar, tes tertulis kemampuan pemecahan masalah matematis serta wawancara. Penelitian kualitatif mencakup tahapan pra-lapangan, pekerjaan lapangan serta analisis data. Teknik analisis dalam penelitian yaitu reduksi data, penyajian data, serta penarikan kesimpulan atau verifikasi. Hasil dari penelitian membuktikan untuk keenam subjek penelitian mempunyai kemampuan pemecahan masalah yang beragam, secara fakta bahwa masing-masing subjek penelitian menggunakan gaya belajar yang berbeda pula. Dimana subjek gaya belajar visual dan auditori mampu memecahkan permasalahan matematika dengan baik daripada subjek gaya belajar kinestetik.
Pengaruh Pembelajaran Diferensiasi Berbasis Masalah Berdasarkan Kesiapan Belajar Siswa terhadap Kemampuan Pemecahan Masalah Matematis Kelas VIII SMP
Authors: M. Agus Muhtadi Rohim  , Roseli Theis  , Khairul Anwar
Published: June 2024

Penelitian ini didasari oleh rendahnya kemampuan siswa Kelas VIII SMP Negeri 11 Kota Jambi dalam memecahkan masalah serta terdapat perbedaan yang signifikan dalam kesiapan belajar siswa. Penelitian ini bertujuan untuk mengkaji pengaruh pembelajaran diferensiasi yang disesuaikan dengan kesiapan belajar terhadap kemampuan siswa kelas VIII SMP Negeri 11 Kota Jambi dalam memecahkan permasalahan. Metode yang digunakan ialah posttest only control group design, dengan sampel terdiri dari dua kelas yang dipilih secara random menggunakan teknik simple random sampling. Data dikumpulkan melalui lembar observasi dan tes kemampuan pemecahan masalah matematis dalam bentuk soal uraian. Hasil penelitian menunjukkan bahwasannya rata-rata skor posttest kemampuan pemecahan masalah matematis siswa di kelas eksperimen lebih tinggi daripada di kelas kontrol. Uji-t sampel independen menunjukkan nilai signifikansinya yakni 0,000 < 0,05. Analisis pengaruh penerapan pembelajaran berdiferensiasi berbasis masalah berdasarkan kesiapan belajar menunjukkan angka 15,02%. Berkenaan dengan itu, dapat ditarik kesimpulan bahwasannya penerapan pembelajaran diferensiasi berbasis masalah berdasarkan kesiapan belajar siswa memiliki dampak signifikan terhadap kemampuan siswa kelas VIII SMP Negeri 11 Kota Jambi dalam memecahkan permasalahan matematika.
Influence Communication, Commitment and Integrity on Wedding Service Quality at KUA, Cibinong District, Bogor Regency
Authors: Zaelani Abdul Qadir , Firdaus Muhammad Azis , Walujadi Dedi
Published: June 2024

This Study aim For analyze influencing factors​ quality services at the Cibinong Regency Religious Affairs Office (KUA), Bogor Regency, in particular in context communication, commitment, and integrity lord in serve wedding poor society. Research methods descriptive done with 194 respondents use random sampling method. Analysis results show that communication, commitment, and integrity in a way simultaneous influential significant to quality service. Variable independent the influence as much as 57% quality service, while 27.7% is influenced by factors other. Findings This confirm importance role factors the in increase quality services at KUA..
 
Keywords : Quality Service, KUA, Communication, Commitment, Integrity, Poor Communities.
Factores que Inciden en el Aprendizaje del Idioma Inglés en los Alumnos de una Escuela Secundaria Pública en el Estado de Tabasco
Authors: Alejandro Jiménez Yancy Paoly , Suárez Ovando Asbinia , García Cupil Rigoberto
Published: June 2024

El presente estudio tuvo como objetivo, identificar como los métodos de enseñanza de los profesores en el nivel telesecundaria para impartir el idioma inglés, influyen en el aprovechamiento escolar y emocional de los estudiantes en una escuela rural de Tabasco. En este documento, se presentan resultados de un trabajo de campo llevado a cabo en el contexto de una escuela de educación pública. Esta investigación se realizó bajo una metodología de corte cualitativo, misma que orientó sus acciones en identificar el problema y posteriormente realizar una intervención pedagógica y con ello garantizar que los alumnos tuvieran a bien reconocer su problemática y los docentes desarrollar estrategias en mejora de su intervención áulica. Participaron como sujetos participantes un total de 20 estudiantes y seis profesores que imparten clases en los grupos de primero, segundo y tercer grado de estudios.
La Gestión de la Calidad en la Industria Maquiladora Mexicana a Partir de la Tecnología 4.0
Authors: Alvarez Castillo Vicente , Treviño Uribe José Javier , Alcala Salinas Claudio Alejandro , Zapata Rebolloso Apolinar
Published: June 2024

En el entorno de la gestión de la calidad en las organizaciones, sobre todo en aquellas de corte industrial, la penetración de las tecnologías es una realidad que permite desde perspectivas diversas como el Internet de las Cosas (IoT, por sus siglas en inglés), las tecnologías 4.0, el aseguramiento de la calidad, la mejora continua, basadas en software e infraestructura basada en dispositivos electrónicos son una realidad en la actualidad. El enfoque de la “calidad 4.0” que es el que se analiza en este artículo dentro del ámbito de las operaciones de una empresa maquiladora con operaciones en Matamoros, Tamaulipas, México, si bien de enormes expectativas, sigue siendo, al menos en el entorno de dicha empresa maquiladora, pero también desde la perspectiva de los estudios científicos en tal sentido, una fortaleza competitiva para las empresas que logren iniciar su adopción en el marco de sus operaciones industriales, en este caso. A lo largo del presente artículo se analizan las posturas teóricas de distintos investigadores en la materia en torno a la calidad 4.0 y se concluye con una investigación empírica cualitativa sobre la postura que alrededor de esta visión de la gestión de la calidad, se aplica en la empresa maquiladora mencionada.
Sumarse a un Sistema Bajo Una Teoría o hacer Academia para Evolucionar la Misma
Authors: Aldaz Izquierdo Andrea Maribel , Elizabeth de la Cruz Germanía , Vizcaino Peñafiel Lorena Alejandra , Rosero De La Cruz Emily Valentina , Agual Espin Pedro Mesias
Published: June 2024

La decisión entre simplemente cumplir como docente dentro de un sistema educativo existente o dedicarse a hacer academia para desarrollar y evolucionar una teoría pedagógica es crucial y compleja. Optar por cumplir implica ejecutar prácticas pedagógicas establecidas, interactuar directamente con los estudiantes en el aula e influir en su aprendizaje y desarrollo. Por otro lado, embarcarse en una carrera académica implica explorar nuevas ideas, teorías y enfoques pedagógicos, contribuyendo al avance del conocimiento educativo mediante la investigación y el desarrollo teórico. Ambas opciones ofrecen oportunidades únicas para contribuir al campo de la educación, y la elección depende de los valores personales, las metas profesionales y las aspiraciones individuales de cada docente. Es esencial reflexionar cuidadosamente sobre estas opciones para contribuir de manera efectiva al campo educativo.
ПЕРСПЕКТИВЫ ИСПОЛЬЗОВАНИЯ АНГЛО-САКСОНСКОЙ МОДЕЛИ «СЛЕПОГО ТРАСТА» ДЛЯ ПЕРЕДАЧИ ИМУЩЕСТВА ГОСУДАРСТВЕННЫХ СЛУЖАЩИХ В ДОВЕРИТЕЛЬНОЕ УПРАВЛЕНИЕ С ЦЕЛЬЮ ПРЕДОТВРАЩЕНИЯ КОНФЛИКТА ИНТЕРЕСОВ
Authors: Абакумова Екатерина
Published: June 2024

В настоящее время в Российской Федерации все еще не создана достаточная правовая база, позволяющая достигнуть целей антикоррупционной борьбы в части передачи имущества государственных служащих в доверительное управление. В представленной работе автор касается проблемы реформирования соответствующего правового института через осмысление опыта США, в основе которого лежит использование специальных видов доверительного управления, созданных на базе модели «слепого траста».
Metformin Consumption Trends and the Impact of Adherence on the Consumption of Oral Antihyperglycemic Drugs
Authors: Mahmutović Milićević Aldijana , Lekić Lana , Nurkić Hazim , Harčinović Ešref , Zahirović Izudin
Published: June 2024

Diabetes mellitus is a metabolic disease characterized by hyperglycemia. Diabetes therapy includes non-medicinal and medicinal treatment. Metformin is used in the treatment of type 2 diabetes mellitus when controlled diet and exercise are not sufficient to maintain normal blood glucose levels. After 6 months, more than one third of patients, and after one year about 50% of patients with chronic diseases stop the initial treatment. Adherence to oral antidiabetic therapy is in range of 65-85%. Non-adherence in therapy represents a large economic burden. The research was carried out on the territory of the Tuzla Canton, based on collected data on the consumption of antihyperglycemic drugs in 2022 and 2023. A comparison was made of the consumption of antihyperglycemic drugs in 2022 and 2023, in order to obtain the trend of the consumption of the mentioned drugs for the examined period. In addition to the above, a comparison of the consumption of metformin was made in relation to the consumption of other types of oral antihyperglycemic drugs for the years 2022 and 2023. The obtained data show that antihyperglycemic drugs are the most prescribed drugs from the list of drugs and that the largest part of expenditures includes this group of drugs. Metformin was the most prescribed oral antihyperglycemic drug in 2022 and 2023. The above results directly indicate how widespread the use of metformin is in the treatment of diabetes, and how much health care costs can be caused by irrational prescribing and non-adherence to metformin therapy.
Exploring the Predictive Correlates of Intimate Partner Violence on Psychological Distress of Selected Married Women in North East Nigeria
Authors: Oduaran Choja Akpovire , Onyencho Victor Chidi
Published: June 2024

Intimate partner violence (IPV) is a major challenge in most marriages, and women are the most affected. Available studies in sub-Saharan Africa considered associated factors in IPV and psychological distress. This study therefore explored the predictive correlates of intimate partner violence on the psychological distress of selected married women in North East Nigeria. This cross-sectional study adopted a purposive sampling technique and 397 married women were selected. The participants responded to questionnaires measuring psychological distress (General Health Questionnaire –28) and Intimate Partner Violence (HARK-4). The dimensions of IPV (Humiliation, Afraid, Rape and Kick) jointly predicted psychological distress among married women. The dimensions contributed a significant variance of 11% to the changes observed in psychological distress. Only afraid, which might be categorised as a psychological form of IPV independently predicted psychological distress. On demographical variables, educational level and marriage duration predicted psychological distress. According to the study’s findings, married women may be more susceptible to psychological distress due to their educational levels, shorter marriage duration, and fear of their partners. The results of this study should be taken into consideration when creating programs to mitigate IPV against women by relevant stakeholders.

Keywords: Intimate Partner Violence Dimensions, Married Women, Psychological Distress
Violence and the Performance of Masculinity in Dudu Busani Dube’s Hlomu the Wife and Sue Nyathi’s The Gold Diggers
Authors: Phakathi Blessing , Akpome Aghogho , Ndabayakhe Vuyiswa
Published: June 2024

The purpose of this article was to explore the critique of male chauvinism in two important recent novels authored by South African women, Hlomu the Wife by Dudu Busani-Dube and The Gold Diggers by Sue Nyathi. Using a qualitative analysis of the two novels, the study demonstrated how intimate spaces operate as potential sites of violence. The study also highlighted how the novels grapple with the symbiotic relationship between physical and/or psychological violence and the transformation of masculinities in intimate relationships. The representation of men by these women authors dramatises the extent to which intimate partner violence might be linked with the disjuncture between patriarchal cultural expectations and men’s lived experiences. This is especially so regarding the public and private performances of masculinity in ways that tend to glorify violent behaviours. Drawing on Pumla Gqola’s exploration of intimate spaces as incubators of fear as well as Robert Morrell’s notion of the ‘new man,’ the article offers valuable insights into some of the psycho-social characteristics of South Africa’s endemic crisis of violence against women.

Keywords: Masculinity, Patriarchy, Gender Violence, Dudu Busani-Dube, Sue Nyathi
La independencia del Perú por la ruta del mar
Authors: Grau Umlauff Fernando
Published: June 2024

Luego de lograr su independencia las Provincias Unidas en Sur América, tenían claro que la gran amenaza a su fragilidad republicana vendría del mar. Así también, que, la independencia de América del Sur no sería factible si no se independizaba de España el Virreinato del Perú. Entendía que el curso de acción para poder vencer al poder español en el Perú a través del Alto Perú lo llevaría al fracaso y que por el mar era el camino para lograr la independencia. Es decir, el control del mar en el pacífico meridional. Empresa que se ve culminada, primero con el desembarco en Paracas donde arriban el 7 de septiembre y luego con la proclama de la Independencia del Perú el 28 de julio de 1821.
ascenso de los países del Golfo: desafíos y oportunidades para la política exterior peruana
Authors: Lembcke Hoyle Gustavo
Published: June 2024

El artículo se inicia con el estudio de los antecedentes históricos del renacimiento islámico hasta la colonización británica en el Golfo Arábigo y la creación de estados independientes en los años sesenta. Luego pasa a revisar la crisis del petróleo de 1973, que conllevó a un periodo de acumulación inédito y obligó a los Países del Golfo a administrar importantes niveles de reservas e invertir en el desarrollo económico y social. Seguidamente, analiza la conformación de sus sociedades y la participación estatal en las actividades económicas. Para finalmente, analizar la proyección internacional de sus economías y el relacionamiento que el Perú puede establecer a partir de los grandes proyectos que vienen impulsando.
Primordios de la codificación latinoamericana sobre derecho internacional privado
Authors: Briceño Berrú José Enrique
Published: June 2024

Este artículo narra la evolución de la codificación del Derecho Internacional Privado en América Latina, desde los primeros intentos de Simón Bolívar en 1826 hasta las conferencias panamericanas del siglo XX, destacando hitos como el Congreso de Panamá y el de Montevideo en 1888-1889 para explorar la transición de la idea de uniformidad legislativa a la armonización de normas de conflicto. Asimismo, se examina la influencia de factores políticos, migratorios y las posturas de países como Argentina, Brasil y Chile en la adopción de principios como la nacionalidad y el domicilio. Este análisis histórico refleja la solidaridad continental y subraya la contribución única de América Latina al desarrollo del Derecho Internacional Privado convencional.
importancia de la cuenca del Pacífico y APEC para el Perú
Authors: Maúrtua de Romaña Oscar
Published: June 2024

La Cuenca del Pacífico es considerada uno de los espacios geográficos más importantes y dinámicos del planeta. Conformada por las principales potencias hegemónicas y por economías tanto desarrolladas como emergentes, se consolida como una importante fuente geoeconómica para quienes la conforman. Por medio de un análisis riguroso de fuentes académicas, este artículo abordará las razones en las cuáles se sustenta su importancia, cuáles son los principales organismos internacionales que se han creado en dicha región -con especial atención en la APEC y la Alianza del Pacífico- así como recomendaciones para la proyección de la política exterior peruana en esta zona.
Análisis del conflicto territorial entre la República Cooperativa de Guyana y la República Bolivariana de Venezuela
Authors: Medina Rivas Plata Anthony
Published: June 2024

Este artículo examina el prolongado conflicto territorial entre Venezuela y Guyana en torno a la región del Esequibo desde una perspectiva de análisis histórico. El estudio abarca desde los primeros intentos de resolución pacífica del conflicto a fines del siglo XIX hasta los desafíos contemporáneos derivados del descubrimiento de grandes reservas de petróleo y gas en la zona disputada; teniendo como epílogo temporal la orden de la Corte Internacional de Justicia de La Haya de abril de 2023 que dispone a Venezuela no alterar el statu quo en la zona hasta que ésta emita un fallo definitivo que puede tomar años. A través de una revisión de fuentes primarias y secundarias, se investiga cómo las reclamaciones de ambas naciones han afectado las relaciones bilaterales y la seguridad regional. Son examinados los esfuerzos de mediación internacional, incluidos los roles desempeñados por las Naciones Unidas y la Corte Internacional de Justicia para abordar el conflicto y facilitar una resolución duradera. El método de investigación incluye el análisis de documentación oficial, informes diplomáticos, noticias contemporáneas y análisis académicos, con un enfoque en la interpretación crítica y contextual de los eventos históricos y contemporáneos. Se discuten las implicaciones geopolíticas y económicas de la disputa territorial, así como las perspectivas futuras para la resolución del conflicto. En última instancia, se argumenta que la resolución del conflicto entre Venezuela y Guyana tiene implicaciones significativas para la estabilidad regional y la cooperación internacional en América Latina y el Caribe.
crisis del orden internacional y el poder de Estados Unidos
Authors: Ashcallay Samaniego Samuel
Published: June 2024

Asistimos en la actualidad a la crisis del llamado orden liberal internacional, que ha definido el relacionamiento de los actores del sistema durante alrededor de ocho décadas sobre la base de pilares como apertura económica, multilateralismo, cooperación en seguridad y solidaridad democrática. El referido orden, que configuró un esquema acotado a Occidente durante la Guerra Fría y que determina el sistema global a partir de 1991, se encuentra ligado al establecimiento de los Estados Unidos como potencia, así como a la construcción de instituciones de gobernanza bajo su liderazgo, con el concierto de otras democracias liberales. A partir de un análisis de la política exterior de Estados Unidos y el ejercicio de su poder, el presente artículo se plantea como objetivo analizar las diferentes etapas de desarrollo del orden liberal internacional, a efectos de evaluar su crisis actual y considerar perspectivas para su futuro.
The bridge and the photograph in Mozambique
Authors: Assubuji Rui , Hayes Patricia
Published: June 2024

This article is an experiment in constructing a new form of narrative through the history of Mozambique. It assembles photographic images of a specific physical structure, the bridge, dating from the colonial period to the contemporary. Thus it follows instances of the making (and unmaking) of bridges as lines of infrastructure, or form, photographed, as these cross the riverine features in the land in order to facilitate connection, traffic, and progress. Great rivers such as the Zambezi flow in one direction, which has also served as a metaphor for the gradual passing of time. In such a case, the bridge cuts across the river at right angles to make mobility and speed possible, inserting new temporalities and spatial transitions. But whether through war, the folly of out-of-scale ambition, or corruption, progress always seems to be on the other side of the river and time seems to move slowly again. Here we work with the propensity of the photograph to disturb expectations of sequential and chronological narrative, its ‘vertical sampling’, to quote Elizabeth Edwards, that distributes the possible parts of any historical reconstruction in unexpected ways. Because of the way a photograph compresses space and time, it renders the space in front of the camera as a detailed micro view and offers a shift in scale. When one attempts to fold photographs into larger historical narratives, they tend to produce sequences that appear temporally askew and lead in different disciplinary directions whose references might traverse poetry, political economy, history, cinema, anthropology, and critical theory. If modernity is fast and its antinomy is slow, most Mozambicans must navigate some kind of synthesis or mode of survival that constantly throws into question the very notion of progress itself.
Framing absence
Authors: de Medeiros Paulo
Published: June 2024

What if absence and loss are structuring elements of the post-imperial condition? Not defining elements, as the post-imperial by its very nature remains a slippery and shape-shifting concept; but certainly core, enabling elements that might go a long way towards explaining the strange hold that a post-imperial imaginary has in the present. Keeping in mind that there are as many versions of the post-imperial as there were empires, and more, because even if one considers a specific ‘empire’, say the Portuguese in this case, it never was a homogeneous, consistent, or coherent entity by any stretch of the imagination. One film that makes clear how impossible it is to disentangle the questions of state power, personal survival, and the various traumas inherent in the post-imperial condition is Margarida Cardoso’s forceful and haunting
Yvone Kane
(2014). The film, in its totality, should also be understood as an allegory, not of the nation or nations, but rather of the conflation of past and present and their implication of a future bereft of simple answers and convenient mythologies.
Yvone Kane
lets us understand that in order to achieve some kind of redemption, in a human, political sense at least, the structuring dualities at the base of most of our society must be abandoned.
A Photoionization Model for the Infrared Coronal Line Emission in the Classical Nova V1716 Scorpii
Authors: Woodward C. E. , Shaw G. , Starrfield S. , Evans A. , Page K. L.
Published: June 2024

A near-infrared spectrum of nova V1716 Scorpii (PNV J17224490-4137160), a recent bright (

V

max

=
7.3

mag), Fermi-LAT detected γ-ray source, was modeled using the photoionization code CLOUDY. Abundances were estimated for He, C, N, O, Si, Al, Mg, Fe, Ne, S, Ca, and P. Notably, P (a factor of 120) and N (a factor of 248) are highly overabundant. It was necessary to assume the ejecta consist of two components (with a cylindrical geometry): a dense component from which the bulk of the H, He, and neutral O i and N emission arises and a more diffuse component from which most of the coronal lines arise. Some of the coronal lines are found to originate from both the dense and diffuse components. The mass of the ejecta, including neutral and ionized gas, is ≃4.19 × 10−4
M
⊙. Our analysis indicates that in the case of V1716 Sco (which has a carbon–oxygen white dwarf), a fraction of 25% white dwarf matter rather than 50% is favored for the mixing between a white dwarf and the accreted envelope before the outburst. This mixing ratio is like that found for oxygen–neon novae where a 25% mixing fraction is also indicated. Helium hydride—the first molecule to form after the Big Bang—may have formed in the ejecta of V1716 Sco based on photoionization modeling. This prediction suggests that novae may be potential formation sites of this important molecular ion.
Three-dimensional Interaction between a Planet and an Isothermal Gaseous Disk. III. Locally Isothermal Cases
Authors: Tanaka Hidekazu , Okada Kohei
Published: June 2024

We performed linear calculations to determine the Type I planetary migration rate for 3D locally isothermal disks with radial temperature gradients. For 3D disks with radial temperature gradients, the linear wave equation has a divergent term of the third pole, which makes corotation a nonremoval singularity. We suppressed the divergence with the Landau prescription to obtain the wave solutions. Despite the singularity at corotation, we derived a definite torque on the planet because the divergent term amplifies the waves only in the neighborhood of corotation and has little effect on the planetary torque. Consequently, we derived the formulas for the total, Lindblad, and corotation torques for locally isothermal disks. The resulting torque term due to the disk temperature gradient agrees well with the results of previous 3D hydrodynamical simulations for locally isothermal disks. Our linear calculation also provides the 3D horseshoe torque, which is close to the results of previous 3D hydrodynamical simulations.
The First Estimation of the Ambipolar Diffusivity Coefficient from Multi-scale Observations of the Class 0/I Protostar, HOPS-370
Authors: Thieme Travis J. , Lai Shih-Ping , Lee Yueh-Ning , Lin Sheng-Jun , Yen Hsi-Wei
Published: June 2024

Protostars are born in magnetized environments. As a consequence, the formation of protostellar disks can be suppressed by the magnetic field, efficiently removing the angular momentum of the infalling material. Nonideal MHD effects are proposed as one way to allow protostellar disks to form. Thus, it is important to understand their contributions to observations of protostellar systems. We derive an analytical equation to estimate the ambipolar diffusivity coefficient at the edge of the protostellar disk in the Class 0/I protostar, HOPS-370, for the first time, under the assumption that the disk radius is set by ambipolar diffusion. Using previous results of the protostellar mass, disk mass, disk radius, density and temperature profiles, and magnetic field strength, we estimate the ambipolar diffusivity coefficient to be

1.7

−
1.4

+
1.5

×

10

19

cm

2

s

−
1

. We quantify the contribution of ambipolar diffusion by estimating its dimensionless Elsässer number to be

∼

1.7

−
1.0

+
1.0

, indicating its dynamical importance in this region. We compare our results to those of the chemical calculations of the ambipolar diffusivity coefficient using the Non-Ideal Magnetohydrodynamics Coefficients and Ionization Library, which are consistent with our results. In addition, we compare our derived ambipolar diffusivity coefficient to the diffusivity coefficients for ohmic dissipation and the Hall effect, and find ambipolar diffusion is dominant in our density regime. These results demonstrate a new methodology to understand nonideal MHD effects in observations of protostellar disks. More detailed modeling of the magnetic field, envelope, and microphysics, along with a larger sample of protostellar systems, is needed to further understand the contributions of nonideal MHD.
Radiative-dynamical Model of Jupiter’s Quasi-quadrennial Oscillation
Authors: Zhang Jialin , Li Tao , Zhang Xi , Li Cheng , Tang Yihuan , Dou Xiankang
Published: June 2024

We present a simulation of Jupiter’s quasi-quadrennial oscillation (QQO) in a 2D radiative-dynamical model. Launching an eastward Kelvin wave and a westward Rossby-gravity wave in the lower boundary, we successfully generate a 4 yr-period oscillation in the equatorial stratosphere. The momentum flux of waves initiates overlying easterly–westerly wind jets descending in altitude with the maximum temperature variation of ±5 K near 10 hPa at the equator. The tropical stratospheric region is dominated by upwelling and downwelling circulation cells induced by the QQO, affecting the midlatitude where stratospheric aerosols enrich. The simulation results are consistent with the previous satellite and ground-based observations in the low latitudes and provide the ability to examine the QQO’s influence in Jupiter’s extratropical stratosphere. The QQO influence further extends into the upper troposphere, forming a weak anticorrelation with the stratosphere oscillation in agreement with the result from 40 yr of telescope observations.
The Population of Small Near-Earth Objects: Composition, Source Regions, and Rotational Properties
Authors: Sanchez Juan A. , Reddy Vishnu , Thirouin Audrey , Bottke William F. , Kareta Theodore , De Florio Mario , Sharkey Benjamin N. L. , Battle Adam , Cantillo David C. , Pearson Neil
Published: June 2024

The study of small (<300 m) near-Earth objects (NEOs) is important because they are more closely related than larger objects to the precursors of meteorites that fall on Earth. Collisions of these bodies with Earth are also more frequent. Although such collisions cannot produce massive extinction events, they can still produce significant local damage. Here we present the results of a photometric and spectroscopic survey of small NEOs that include near-infrared spectra of 84 objects with a mean diameter of 126 m and photometric data of 59 objects with a mean diameter of 87 m. We found that S-complex asteroids are the most abundant among the NEOs, comprising ∼66% of the sample. Most asteroids in the S-complex were found to have compositions consistent with LL-chondrites. Our study revealed the existence of NEOs with spectral characteristics similar to those in the S-complex but that could be hidden within the C- or X-complex due to their weak absorption bands. We suggest that the presence of metal or shock darkening could be responsible for the attenuation of the absorption bands. These objects have been grouped into a new subclass within the S-complex called Sx-types. The dynamical modeling showed that 83% of the NEOs escaped from the ν
6 resonance, 16% from the 3:1, and just 1% from the 5:2 resonance. Lightcurves and rotational periods were derived from the photometric data. No clear trend between the axis ratio and the absolute magnitude or rotational period of the NEOs was found.
Gynandromorph records of Melissodes trinodis and Melissodes communis (Hymenoptera, Apidae) from North Dakota, USA
Authors: Campbell Joshua W. , Pei C. K. , Wright Karen W.
Published: June 2024

Bees that express both male and female characteristics are known as gynandromorphs. Here we report and describe two specimens that represent the first documented gynandromorphs of Melissodes trinodis Robertson and one specimen of Melissodes communis Cresson (Hymenoptera: Apidae) that represents only the second known case. All three specimens were collected in North Dakota, USA and exhibit a mosaic pattern of gynandromorphy.
Phylogenetic analysis reveals a new net-winged beetle genus of Eurrhacini (Coleoptera, Lycidae) from the Pacific slopes of Central America and Ecuador
Authors: Nascimento Elynton Alves , Bocakova Milada
Published: June 2024

The first phylogenetic inference of Calopterini and Eurrhacini focused on Calocladon and related taxa was carried out. A data matrix composed of 46 species and 51 morphological characters was assembled and analyzed using parsimony and model-based approaches. Eurrhacini were recovered monophyletic. Furthermore, phylogenetic analyses highly supported the Calocladon clade including also Atlanticolycus, Cladocalon, and Gorhamiumgen. nov. as its sister clade. Our trees consistently recovered monophyly of the new genus with two new species: Gorhamium bidentatumsp. nov. (Panama, Baru Volcano) and G. unidentatumsp. nov. from the Pacific slopes of Ecuador. A revised key to the genera of Eurrhacini is given and illustrations of distinguishing characters are provided. Phylogenetic relationships of Eurrhacini and character evolution are discussed.
Taxonomic revision of the Southeast Asian brook barb genus Poropuntius Smith, 1931 (Teleostei, Cyprinidae) with description of a new species from Vietnam
Authors: Hoang Huy Duc , Pham Hung Manh , Tran Ngan Trong , Durand Jean-Dominique , Wu Ling , Pfeiffer John , Chen Xiao-Yong , Page Lawrence M.
Published: June 2024

Molecular data from samples encompassing 22 nominal species of Poropuntius indicate that the species-level diversity in the genus has been vastly overestimated, likely due to inadequate taxon and geographic sampling and reliance on morphological characters that vary intra-specifically. The latter includes discrete mouth morphologies related to alternate feeding strategies (ecomorphs) within populations. One new species is described, Poropuntius anlaoensis Hoàng, Phạm & Trần, sp. nov., and 17 synonyms of six valid species names of Poropuntius, P. krempfi, P. alloiopleurus, P. huangchuchieni, P. laoensis, P. kontumensis, and P. deauratus, are recognised. Additional taxonomic changes in this widespread and generally poorly known genus are likely as more molecular and morphological data become available.