bluuebunny/crossref_metadata_2025_split huggingface dataset:
Time-Reversal based Power Division Multiple Access
Authors: Lee Man Hee , Lee Hye Yeong , Shin Soo Young 
Published: May 2024

Abstract

This paper proposes time-reversal based power division multiple access (TRPDMA) to enhance achievable sum rate (ASR) in dense multi-path environment. In TRPDMA, time-reversal (TR) introduces spatial focusing effect which provides a robustness of transmission using channel reciprocity. A mathematical approach is used to derive channel model of the proposed TRPDMA and calculate a closed-form of ASR. As performance metrics, ASR, ergodic ASR (EASR), and complexity are evaluated to compare with non-orthogonal multiple access (NOMA) and time-reversal division multiple access (TRDMA). The proposed TRPDMA outperforms than NOMA in both ASR and EASR while TRDMA in both ASR, ESAR and computational complexity.
Finding my tribe: a qualitative interview study of how people living with metastatic breast cancer perceive metastatic breast cancer support groups
Authors: Mackie Grace M , Boyle Frances , Lewis Sophie , Smith Andrea L 
Published: May 2024

Abstract

Purpose
This study explored the value of MBC support groups, and factors that affect attendance, from the perspective of people with MBC.
Methods
Semi-structured interviews were conducted with 28 women with MBC (support group attendees n = 16; non-attendees n = 12). Data were analysed using an inductive approach to thematic analysis.
Results
Three themes were generated: the value of sharing experiential knowledge, spaces for open and honest conversations, and opportunities to find connection and community. These factors were the main reasons that some participants valued, and chose to attend, an MBC support group. Stage-specificity and professional facilitation were identified as important aspects of group structure. Key reasons for non-attendance were concerns about misinformation, confronting the death of group members, and satisfaction with existing support networks.
Conclusions
MBC support groups are beneficial for some people with MBC, providing opportunities to connect with others with the same diagnosis. For others, different forms of peer support such as online forums or one-on-one support may be preferred. We argue that ensuring those with MBC have equal access to the peer support they need will be essential in supporting people to live as well as possible with MBC.
Implications for cancer survivors
MBC support groups, if appropriately led, can provide emotional and informational benefits for people with MBC. This research may also have relevance to other metastatic cancers where novel therapies are extending survival, resulting in an emerging cancer population with distinct supportive and survivorship needs.
Pharmacological and pupillary evidence for the noradrenergic contribution to reinforcement learning in Parkinson's disease
Authors: O'Callaghan Claire , Hezemans Frank , Subramaniam Naresh , Ye Rong , Tsvetanov Kamen , Murley Alexander , Holland Negin , Orlando Isabella , Regenthal Ralf , Baker Roger A , Williams-Gray Caroline , Passamonti Luca , Robbins Trevor , Rowe James 
Published: May 2024

Abstract

Noradrenaline plays an integral role in learning, by optimising behavioural strategies and facilitating choice execution. Testing the noradrenergic framework of learning in the context of human diseases offers a test bed for current normative neuroscience theories and may also indicate therapeutic potential. Parkinson's disease is often considered as a model of dopamine deficits, including dopamine’s role in reinforcement learning. However, noradrenergic function is also severely impaired by Parkinson's disease, contributing to cognitive deficits. Using a single dose of the noradrenaline reuptake inhibitor atomoxetine, in people with Parkinson's disease (n=19, randomised double-blind placebo-controlled crossover design), we show improvements in learning compared to placebo. Computational modelling confirmed a substantial shift in the decision noise parameter, indicative of more exploitative choices. This response pattern closely resembled that of age-matched controls (n=26) and simulations of optimal response strategies. Pupillometry revealed increased baseline pupil diameter under atomoxetine, which correlated with behavioural improvements, and a heightened phasic pupillary response to feedback. Our findings confirm the noradrenergic contribution to reinforcement learning, and in doing so they challenge the simple interpretation of tonic-phasic locus coeruleus firing patterns based on pupillometry. Noradrenergic modulation is a potential treatment strategy for cognitive symptoms in Parkinson's disease and related disorders.
Ni/Pd-containing pentasils in n-hexane micropulse hydrocracking and aromatization
Authors: Yakovenko A. , Patrylak L. , Voloshyna Yu. , Pertko O. , Povazhnyi V. 
Published: May 2024

Abstract

Monometallic palladium- and nickel-containing as well as bimetallic MFI-type zeolites with metal content of 1 wt % were synthesized. Samples were characterized by using low temperature nitrogen adsorption/desorption, FTIR, and TEM. It is stated that at 400–500 оС on the investigated samples the cracking of linear hexane occurs, but on the palladium-containing sample the aromatization function is partly appeared.
Causal Relationship Between Inflammatory Bowel Disease and Malignant Melanoma: A Mendelian Randomization Analysis
Authors: Zhao Wumei , Fu Haijing , Xu Tianyi , Shan Shijun 
Published: May 2024

Abstract

While early epidemiological observational studies have suggested a potential link between inflammatory bowel disease (IBD) and malignant melanoma (MM), the precise causal relationship between them remains contentious. From the largest global genome-wide association studies (GWAS) covering IBD, Crohn's disease (CD), and ulcerative colitis (UC), we meticulously selected genetic variants as our instrumental variables (IV). In this research endeavor, we primarily utilized the inverse variance-weighted (IVW) method for Two-Sample Mendelian Randomization (MR) analysis to investigate further the potential causal relationship between IBD and MM. Based on genetic predictions, we identified a significant association between an increased risk of MM and IBD, with particularly pronounced effects observed in UC patients. The odds ratios (OR) generated were 1.072 (95%CI: 1.018–1.128, P = 0.008) and 1.093 (95%CI: 1.035–1.155, P = 0.034) respectively. However, it's imperative to emphasize that our findings did not reveal a causal relationship between IBD and NMSC (non-melanoma skin cancer), contrasting with certain earlier observational studies. Further reverse MR analysis corroborated the absence of a direct association between genetically predicted MM and IBD. This study furnishes compelling evidence supporting a potential link between IBD, especially UC, and MM. Given the causal relationship between IBD and MM, this discovery holds significant implications for refining subsequent clinical diagnostic, therapeutic, and preventive strategies.
Hydrogeological assessment and contaminant transport modelling of Enyimba landfill site in Aba, Nigeria
Authors: Bridget Odochi Ubechu , Iheanyichukwu Opara Alexander , Okechukwu Onyekuru Samuel , Chukwuemeka Ikechukwu Chigozie , Juliana Ofoh Ifeyinwa , Ifeanyi Okechukwu Stephen , Nkiru Nwokeabia Charity , Osita Iwuoha Prince , Emmanuel Ajaegbu Ebuka 
Published: May 2024

ABSTRACT
Commercial and industrial growth in cities generates hazardous waste, often disposed of in open dump sites, contaminating groundwater. Understanding pollutant movement and numerical models are crucial for effective water resource management. This study assessed hydrogeological dynamics and pollutant transfer in the Enyimba landfill site, Nigeria, using field surveys and contaminant modelling to understand groundwater quality and arsenic contamination spread. The research technique included field and laboratory experiments, as well as water sampling during both dry and wet seasons, to evaluate groundwater quality. The geochemical examination of groundwater samples revealed the amounts of several metals using atomic absorption spectrophotometry. The study used contaminant transport modelling with Visual MODFLOW Flex 6.1 and MT3DMS software to simulate groundwater flow and solute transport within the aquifer layers. Predictive simulations over a 20-year timeframe demonstrated the progressive spread of arsenic pollution from the landfill, resulting in an ellipsoid-shaped plume stretching from its source. Arsenic levels have gradually increased, posing a serious threat to groundwater quality and human health. The research highlights the need for remedial measures to reduce groundwater pollution, including waste recovery and recycling facilities and geo-membrane use. It emphasizes proactive actions to protect groundwater supplies and promote environmental sustainability in the Enyimba landfill site.
أثر مؤشرات الاداء المالي في القيمة السوقية لأسهم عينة من المصارف التجارية في العراق للمدة (2010-2021)
Authors: Muhammed Maher Asaad Hamdi 
Published: May 2024

لقد جاء هذا البحث لمعرفة تأثير مؤشرات الأداء المالي على القيمة الاسمية لاسهم عينة من المصارف التجارية في العراق ، وقد شملت عينة البحث كل من المصارف الاتية : ( بغداد ، التجاري العراقي ،الاهلي العراقي ، المنصور، الاستثمار العراقي ، الخليج ، الشرق الاوسط ، ) للمدة 2010 -2021 ، ولتحقيق أهداف البحث واختبار فرضياته تم بناء انموذج انحدا خطي متعدد بين المتغيرات المستقلة (مؤشر صافي الربح ، ومعدل العائد على الموجودات للمصارف، العائد على حقوق الملكية للمصارف ، ومعدل العائد على الاسهم ) والقيمة الاسمية للاسهم كمتغير تابع ، وتم استخدام أسلوب بيانات السلاسل الزمنية المقطعية (Panel Data) لدراسة العلاقة بين متغيرات البحث باستخدام برامج eviews-12. . وتوصل البحث الى عدد من الاستنتاجات اهمها وجود علاقة ارتباطية ذات دلالة احصاية بين المتغيرات المستقلة والقيمة الاسمية للاسهم في المصارف عينة البحث فضلا عن وجود علاقات طويلة الاجل بين متغيرات البحث.
Technology Use Among Older Adults and Their Caregivers: Cross-Sectional Survey Study
Authors: Lee Shinduk , Ory Marcia G , Vollmer Dahlke Deborah , Smith Matthew Lee 
Published: May 2024

Abstract

Background
Informal caregivers are called upon to provide substantial care, but more needs to be known about technology use among older adult and caregiver dyads.

Objective
This study described technology use among older adults and their caregivers, explored potential correlates of technology use, and highlighted implications for practice.

Methods
A cross-sectional survey was conducted among unpaid caregivers of older adults (n=486). Primary outcomes were self-reported technology (devices and functions) use among caregivers and their oldest care recipient. The concordance of technology use among caregivers and care recipients was also examined. Multivariable regression models were conducted separately for caregivers and care recipients.

Results
Greater proportions of caregivers used all examined technologies, except for the medication alerts or tracking function, than care recipients. Caregivers used an average of 3.4 devices and 4.2 functions, compared to 1.8 devices and 1.6 functions used by their care recipients. Among caregivers, younger age, higher income, and higher education were associated with more technology use (P<.05). Among care recipients, younger age, not having cognitive dysfunction, and caregiver’s technology use were associated with more technology use (P<.05).

Conclusions
Understanding technology use patterns and device adoption across diverse caregiver and care recipient populations is increasingly important for enhancing geriatric care. Findings can guide recommendations about appropriate technology interventions and help providers communicate and share information more effectively with patients and their caregivers.
Development of a Subjective Visual Vertical Test System Using a Smartphone With Virtual Reality Goggles for Screening of Otolithic Dysfunction: Observational Study
Authors: Umibe Akiko , Fushiki Hiroaki , Tsunoda Reiko , Kuroda Tatsuaki , Kuroda Kazuhiro , Tanaka Yasuhiro 
Published: May 2024

Background
The subjective visual vertical (SVV) test can evaluate otolith function and spatial awareness and is performed in dedicated vertigo centers using specialized equipment; however, it is not otherwise widely used because of the specific equipment and space requirements. An SVV test smartphone app was developed to easily perform assessments in outpatient facilities.

Objective
This study aimed to verify whether the SVV test smartphone app with commercially available virtual reality goggles can be used in a clinical setting.

Methods
The reference range was calculated for 15 healthy participants. We included 14 adult patients with unilateral vestibular neuritis, sudden sensorineural hearing loss with vertigo, and Meniere disease and investigated the correlation between the SVV test results and vestibular evoked myogenic potential (VEMP) results.

Results
The SVV reference range of healthy participants for the sitting front-facing position was small, ranging from –2.6º to 2.3º. Among the 14 patients, 6 (43%) exceeded the reference range for healthy participants. The SVV of patients with vestibular neuritis and sudden sensorineural hearing loss tended to deviate to the affected side. A total of 9 (64%) had abnormal cervical VEMP (cVEMP) values and 6 (43%) had abnormal ocular VEMP (oVEMP) values. No significant difference was found between the presence or absence of abnormal SVV values and the presence or absence of abnormal cVEMP and oVEMP values; however, the odds ratios (ORs) suggested a higher likelihood of abnormal SVV values among those with abnormal cVEMP and oVEMP responses (OR 2.40, 95% CI 0.18-32.88; P>.99; and OR 2, 95% CI 0.90-4.45; P=.46, respectively).

Conclusions
The SVV app can be used anywhere and in a short period while reducing directional bias by using virtual reality goggles, thus making it highly versatile and useful as a practical otolith dysfunction screening tool.
PERSEPSI MAHASISWA TERHADAP PELAKSANAAN PROGRAM KAMPUS MENGAJAR DALAM MENINGKATKAN SOFT SKILL MAHASISWA PROGRAM STUDI PENDIDIKAN EKONOMI FKIP UNIVERSITAS MUHAMMADIYAH BENGKULU
Authors: Ayuni Rossa , Suharmi Suharmi , Nur Rhomadoni Indra 
Published: May 2024

Tujuan penelitian ini untuk mengetahui persepsi mahasiswa terhadap pelaksanaan Program Kampus Mengajar dalam meningkatkan soft skill mahasiswa Program Studi Pendidikan Ekonomi FKIP Universitas Muhammadiyah Bengkulu. Jenis penelitian ini adalah deskriptif kualitatif dengan subjek penelitian mahasiswa Program Studi Pendidikan Ekonomi FKIP Universitas Muhammadiyah Bengkulu yang telah mengikuti Program Kampus Mengajar dan objek penelitian pelaksanaan Program Kampus Mengajar dalam meningkatkan soft skill. Teknik pengumpulan data menggunakan wawancara terstruktur dan dokumentasi. Teknik analisis data menggunakan teknik analisis deskriptif (persentase) dan analisis kualitatif (pengumpulan data, reduksi data, penyajian data, dan penarikan kesimpulan). Pengecekan keabsahan data dalam penelitian ini dilakukan dengan meningkatkan ketekunaan, triangulasi sumber, dan melakukan member check. Hasil penelitian yang diperoleh dari 5 indikator soft skill yang diteliti yakitu : 1) kemampuan komunikasi diperoleh persentase 56% mahasiswa mengatakan sangat baik dan 44% mahasiswa mengatakan baik, 2) kemampuan menyelesaikan masalah diperoleh persentase 67% mahasiswa mengatakan sangat baik dan 33% mahasiswa mengatakan baik, 3) kreativitas diperoleh persentase 45% mahasiswa mengatakan sangat baik, 22% mahasiswa mengatakan baik, dan 33% mahasiswa mengatakan tidak baik, 4) kemampuan menyelesaikan konflik diperoleh persentase 44% mahasiswa mengatakan sangat baik dan 56% mahasiswa mengatakan baik, dan 5) kesadaran budaya lain diperoleh persentase 64% dengan katagori sangat baik dan 36% mahasiswa mengatakan baik. Berdasarkan persentase secara keseluruhan mahasiswa memberikan persepsi positif terhadap pelaksanaan Program Kampus Mengajar dalam meningkatkan soft skill mahasiswa Program Studi Pendidikan Ekonomi Fkip Universitas Muhammadiyah Bengkulu.
PENGARUH PENGGUNAAN MEDIA POWERPOINT TERHADAP HASIL BELAJAR SISWA MATA PELAJARAN AKUNTANSI KEUANGAN KELAS XII AKUNTANSI
Authors: Limbu Ermanto , Tikollah M. Ridwan , Azis Fajriani 
Published: May 2024

Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan media powerpoint terhadap hasil belajar siswa mata Pelajaran akuntansi keuangan kelas XII Akuntansi SMK Negeri 1 Makassar. Variabel penelitian ini adalah media powerpoint sebagai variabel bebas (X) dan hasil belajar sebagai variabel terikat (Y). Populasi penelitian ini adalah seluruh siswa kelas XII AKL di SMK Negeri 1 Makassar yang berjumlah 147 siswa, sedangkan sampel dalam penelitian ini adalah siswa kelas XII AKL 1 berjumlah 38 siswa yang diambil dengan teknik pengambilan sampel purposive sampling. Teknik pengambilan data yang digunakan adalah dokumentasi, angket, dan tes. Teknik analisis data yang digunakan adalah analisis statistik deskriptif, uji instrument, uji normalitas, dan uji hipotesis dengan menggunakan SPSS 25 for windows. Hasil penelitian ini menunjukkan bahwa berdasarkan hasil regresi linear sederhana diperoleh model persamaan regresi linear sederhana Y= 68.070 + 0.407 yang berarti tiap pertambahan satu nilai media powerpoint, maka hasil belajar siswa kelas XII AKL 1 pada mata pelajaran akuntansi keuangan bertambah 0,407 satuan. Dari analisis korelasi pearson product moment diperoleh nilai pearson correlation sebesar 0,709 dan bernilai positif berada pada interval 0,600-0,799 yang berada pada kategori kuat yang berarti terdapat hubungan yang kuat antara media powerpoint dan hasil belajar siswa kelas XII AKL 1 padamata pelajaran akuntansi keuangan. Dari hasil analisis uji-t bahwa nilai signifikansi 0,000 < 0,05 yang berarti variabel media powerpoint berpengaruh positif dan signifikansi terhadap hasil belajar siswa kelas XII AKL 1 pada mata pelajaran akuntansi keuangan, dengan demikian hipotesis “diterima”. Dari hasil analisis koefisien determinasi diperoleh nilai r2 = 50,2% yang berarti media powerpoint memiliki kontribusi terhadap hasil belajar siswa sebesar 50,2% dan sisanya sebesar 49,8% dipengaruhi oleh faktor lain
diseño sostenible para el futuro
Authors: Tessore María Eugenia 
Published: May 2024

Este trabajo tiene como propósito fundamental concientizar sobre hábitos sostenibles desde las primeras etapas de la vida. Explorando la noción de sinergia, se resalta la interconexión entre alimentación, nutrición, gestión de desechos, residuos y los principios de la economía circular. Se establece así una conexión directa entre nuestras elecciones alimenticias y la preservación del entorno en el que vivimos. Para lograr este objetivo, se enfatiza la necesidad de construir vínculos entre diversos actores sociales, fomentando el trabajo en equipo y destacando la importancia de cada rol mediante la comprensión de conocimientos adquiridos. Se busca transmitir información valiosa fomentando la inclusión y participación activa de la comunidad en la construcción de un entorno más sostenible. La toma de conciencia respecto a las elecciones realizadas durante la compra de alimentos, considerando aspectos como el embalaje y la sostenibilidad, nos ha permitido diseñar y crear productos a partir de materiales compostables, como residuos de yerba, té y café, abordando la mayoría de las "R" de la economía circular. La clasificación de los residuos, es esencial para la aplicación de las 9R, permitiendo que el proyecto trascendiera los límites de la institución educativa (universidades, colegios, el barrio y hogares) fomentado la colaboración activa de la comunidad en el proceso de recolección y concientización sobre la problemática de los residuos plásticos.
Investigating the Educational Challenges Related to Cultural Competence Faced by Iraqi Nursing College Students
Authors: Hussain Hashim Faris 
Published: May 2024

English for specific purpose is becoming increasingly considerable in various sectors, including medical sectors. Although numerous studies have investigated the effectiveness of such programs o n cultural competence behaviors and client outcomes, limited research has explored professionals' perceptions of cross-cultural educational representations (such as cultural consciousness and cultural competence) and the magnitude to which they and their administrations implement these values in preparation. In light of this gap, this study is directed to investigate the perceptions of healthcare professionals regarding customarily competent care, their involvements with multicultural patients, their own levels of cultural competence, and the degree to which they believe their cultural competencies discourse multicultural encounters. Data for this study are collected from a sample of 56 healthcare professionals affiliated with a Baghdad university in Iraq, representing various healthcare systems. A 19-item questionnaire, consisting of open-ended inquiries and multiple-choice items, is used to gather participants' perspectives and experiences. The majority of participants seem to perceive cross-cultural education primarily from a "cultural awareness" perspective. They emphasize on the importance of possessing practical cultural knowledge, such as understanding norms and customs, and facilitating communication through the use of interpreters. The study participants pay little attention to the principles of systemic cross-cultural approaches, such as cultural competence, cultural safety, and addressing issues like racism, power imbalances, and biases ingrained in the majority culture. Additionally, the need for self-reflection and awareness of personal prejudices was rarely acknowledged.
NGHIÊN CỨU SỬ DỤNG HỖN HỢP XỈ HẠT LÒ CAO - CÁT (LÒNG) SÔNG TRONG XÂY DỰNG CÔNG TRÌNH BIỂN
Authors: Nhàn Nguyễn Thị Thanh 
Published: May 2024

Bài báo trình bày tính chất cơ lý (gồm thành phần hạt, khối lượng riêng, hệ số rỗng lớn nhất và nhỏ nhất, hệ số thấm, đầm chặt tiêu chuẩn, cường độ kháng nén một trục nở hông) của hỗn hợp phối trộn giữa xỉ hạt lò cao (GBFS) và cát lòng sông nhằm đánh giá khả năng thay thể cát bằng GBFS trong xây dựng công trình biển. Tỉ lệ khối lượng cát trong hỗn hợp phối trộn thay đổi từ 20% đến 60%. Kết quả cho thấy, hỗn hợp chứa 50% đến 60% xỉ có cường độ nén một trục tăng dần theo thời gian nhờ đặc tính thủy hóa trong điều kiện môi trường ẩm và đạt cực đại khi mẫu được thủy hóa 280 ngày, giá trị qu đạt 824,341 kN/m2 và hệ số thấm k dao động từ 10-3 đến 10-4 m/s. Đây là cơ sở nhằm cung cấp cứ liệu trong định hướng sử dụng GBFS làm vật liệu xây dựng thay thế một phần cát ở nước ta trong xây dựng công trình biển.
Standard series of transmitting equipment for hydra-jet technology based on dimensionless geometric parameters development
Authors: Novikov V. I. 
Published: May 2024

Introduction. The work is devoted to the calculation of series standards for the design of high-pressure transmission devices used in various hydra jet technologies, which will provide the design of these devices based on dimensionless indicators describing the relationship between their geometric and technological parameters.Materials and methods. The methodology includes the use of mathematical models and analytical approaches to assess the influence of various parameters on heat generation processes in equipment, as well as methods for statistical processing of results.Results. A histogram of temperature distribution was constructed and the data was approximated using the distribution curve of temperature values and parametric series were generated for dimensionless parameters depending on various factors such as temperature, pressure, rotational speed and linear speed. It is possible to obtain parametric series for linear dimensions from five temperature ranges and seven standard sizes depending on the pressure and rotation speed of the drill shaft.Discussion and conclusions. The results obtained provide a better definition of the relationships between rotation speed, geometric characteristics and temperature parameters through the use of dimensionless indicators and it is possible to optimize the design of such devices taking into account operating conditions and ensuring increased efficiency.