bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling Adoption, Security, and Privacy of COVID-19 Apps: Findings and Recommendations From an Empirical Study Using the Unified Theory of Acceptance and Use of Technology
Authors: Nunes Nuno , Adamo Greta , Ribeiro Miguel , R Gouveia Bruna , Rubio Gouveia Elvio , Teixeira Pedro , Nisi Valentina 
Published: July 2022

Background
The global health crisis caused by COVID-19 has drastically changed human society in a relatively short time. However, this crisis has offered insights into the different roles that such a worldwide virus plays in the lives of people and how those have been affected, as well as eventually proposing new solutions. From the beginning of the pandemic, technology solutions have featured prominently in virus control and in the frame of reference for international travel, especially contact tracing and passenger locator applications.

Objective
The objective of this paper is to study specific areas of technology acceptance and adoption following a unified theory of acceptance and use of technology (UTAUT) research model.

Methods
We presented a research model based on UTAUT constructs to study the determinants for adoption of COVID-19–related apps using a questionnaire. We tested the model via confirmatory factor analysis (CFA) and structural equation modeling (SEM) using travelers’ data from an insular tourist region.

Results
Our model explained 90.3% of the intention to use (N=9555) and showed an increased understanding of the vital role of safety, security, privacy, and trust in the usage intention of safety apps. Results also showed how the impact of COVID-19 is not a strong predictor of adoption, while age, education level, and social capital are essential moderators of behavioral intention.

Conclusions
In terms of scientific impact, the results described here provide important insights and contributions not only for researchers but also for policy and decision makers by explaining the reasons behind the adoption and usage of apps designed for COVID-19.
Key Stakeholders’ Experiences and Perceptions of Virtual Reality for Older Adults Living With Dementia: Systematic Review and Thematic Synthesis
Authors: Flynn Aisling , Healy David , Barry Marguerite , Brennan Attracta , Redfern Sam , Houghton Catherine , Casey Dympna 
Published: July 2022

Background
Technology is increasingly being used and evolving in the dementia care landscape. One such technology that has gained traction over the last decade is virtual reality (VR). VR is being applied in many areas of dementia care, including cognitive assessment and training, reminiscence therapy, music therapy, and other recreational VR applications. Despite the plethora of applications, they are often not shaped by the experiences and perceptions of older adults living with dementia. Currently, there is no qualitative evidence synthesis (QES) to explore this area. This review aimed to provide qualitative evidence supporting existing systematic reviews in this area.

Objective
The aim of this QES was to explore key stakeholders’ experiences and perceptions of VR for older adults living with dementia. It aimed to explore the barriers and facilitators to VR use and provide recommendations for future design and implementation.

Methods
QES was used, which involved a systematic search of 6 databases to identify studies that qualitatively explored key stakeholders’ experiences and perceptions of VR for older adults living with dementia. Thematic synthesis was used to integrate the findings of 14 studies (from 15 reports). The Critical Appraisal Skills Programme tool was used to assess the methodological quality of the included studies. The confidence placed in the review findings was assessed using the GRADE-CERQUAL (Confidence in the Evidence from Reviews of Qualitative research).

Results
A total of 15 reports from 14 studies were included in the review, consisting of a range of levels of VR immersion, stages of dementia, and care contexts. Three analytical themes were generated: stepping into virtuality, a virtual world, and returning to reality. The results indicate the importance of sensitively designing and introducing VR to this population, as older adults living with dementia often have no prior experience of using this technology. VR can be a positive experience for older adults living with dementia and can provide meaningful interactions, positive expressions, and long-term impacts on everyday functioning. However, it should be acknowledged that some negative associations must be accounted for before, during, and after use.

Conclusions
This review highlights the positive implications as well as negative associations of VR use. It emphasizes the need for VR design and implementation driven by the needs and views of older adults living with dementia as well as with other key stakeholders. Future research needs to explore the vital role that older adults living with dementia can play in the design process and how they can be empowered to meaningfully design and use this technology.
Digital Technologies for Health Promotion and Disease Prevention in Older People: Protocol for a Scoping Review
Authors: De Santis Karina Karolina , Mergenthal Lea , Christianson Lara , Zeeb Hajo 
Published: July 2022

BackgroundDigital technologies could contribute to health promotion and disease prevention. It is unclear if and how such digital technologies address the health needs of older people in nonclinical settings (ie, daily life).ObjectiveThis study aims to identify digital technologies for health promotion and disease prevention that target the needs of older people in nonclinical settings by performing a scoping review of the published literature. The scoping review is guided by the framework of Arksey and O’Malley.MethodsOur scoping review follows the PRISMA-ScR (Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews) guidelines. The information sources are bibliographic databases (MEDLINE, PsycINFO, CINAHL, and SCOPUS) and bibliographies of any included systematic reviews. Manual searches for additional studies will be performed in Google Scholar and most relevant journals. The electronic search strategy was developed in collaboration with a librarian who performed the search for studies on digital technologies for health promotion and disease prevention targeting the needs of older people. Study selection and data coding will be performed independently by 2 authors. Consensus will be reached by discussion. Eligibility is based on the PCC (Population, Concept, and Context) criteria as follows: (1) older people (population); (2) any digital (health) technology, such as websites, smartphone apps, or wearables (concept); and (3) health promotion and disease prevention in nonclinical (daily life, home, or community) settings (context). Primary studies with any design or reviews with a systematic methodology published in peer-reviewed academic journals will be included. Data items will address study designs, PCC criteria, benefits or barriers related to digital technology use by older people, and evidence gaps. Data will be synthesized using descriptive statistics or narratively described by identifying common themes. Quality appraisal will be performed for any included systematic reviews, using a validated instrument for this study type (A Measurement Tool to Assess Systematic Reviews, version 2 [AMSTAR2]).ResultsFollowing preliminary literature searches to test and calibrate the search syntax, the electronic literature search was performed in March 2022 and manual searches were completed in June 2022. Study selection based on titles and abstracts was completed in July 2022, and the full-text screen was initiated in July 2022.ConclusionsOur scoping review will identify the types of digital technologies, health targets in the context of health promotion and disease prevention, and health benefits or barriers associated with the use of such technologies for older people in nonclinical settings. This knowledge could guide further research on how digital technologies can support healthy aging.International Registered Report Identifier (IRRID)PRR1-10.2196/37729
Recurrences of tachycardia after repeated slow pathway ablation: What is the diagnosis?
Authors: Vijay Soorampally , Shah Harshad , Lokhandawala Yash 
Published: July 2022

A 30-year-old man with a structurally normal heart was referred to us
with a 2-year history of recurrent episodes of rapid paroxysmal
palpitations. A few episodes required hospitalization and were
terminated with intravenous diltiazem. During electrophysiology (EP)
study done twice before in other hospitals, the patient was diagnosed as
typical atrioventricular nodal reentrant tachycardia (AVNRT) and
underwent radiofrequency ablation of the slow pathway. However, the
episodes recurred. Because of the patient’s persistent symptoms, an EP
study was performed again. Tachycardia was easily induced using atrial
extrastimuli, ventricular extrastimuli and with rapid atrial pacing.
دراسة سلوك التآكل النقري لسبيكة الألمنيوم 1100 في محلول 3% كلوريد الصوديوم
Authors: عبد المنعم عباس كريم  
Published: July 2022

أجريت هذه الدراسة على سبيكة الألمنيوم 1100 لمعرفة سلوك التآكل النقري في محلول (NaCl % 3) المتعادل والمشبع بالهواء وأجريت جميع الاختبارات عند درجة حرارة المختبر. وكان هناك أربع مجاميع من العينات:(1) كما تم استلامها (2) أجريت لها عملية تخمير (Annealing) عند درجة(760) مْ (3) وأجريت لها عملية التشكيل بالدرفلة (Rolling) بنسبة (35%) (4) أجريت لها عملية التشكيل بنسبة (%75).
حسبت عدد النقر الناتجة من عملية التآكل على سطح كل عينة ولجميع المجاميع الأربعة ثم بعد ذلك تم قياس عمق الحفر و تصوير سطوح العينات وتبين أن عدد النقر يتزايد تدريجياً مع زيادة فترة الغمر بين (5) أيام و (90) ويكاد يكون تدرج الزيادة متناسقاً لجميع الحالات. وأما قبل ذلك فان معدل الزيادة يكون متسرعاً جداً. وهي حالة تشير إلى استمرار عملية تخليق ونشوء نقر جديدة باستمرار مع استمرار نمو النقر الناشئة في مراحل سابقة لها و أن حالة المعدن المخمر والتي تمثل معدناً بنسبة تشكيل مقدارها (0 %) هي أقل الحالات استجابة للتآكل النقري أي أقلها عرضة
تغيير مسار انتقال الحركة في المركبة
Authors: Zeidan Lutfi 
Published: July 2022

تناول البحث دراسة إمكانية رفع صندوق التروس المساعد من المركبة وإجراء بعض التحويرات على المحور الخلفي والأمامي وعمود الإدارة لغرض نقل الحركة إلى المحور الخلفي مباشرة لمركبة لاندكروزر موديلFJ55-LV-KO Japan .بافتراض عدد الدورات الخارجة من صندوق التروس الرئيسي والداخلة إلى صندوق التروس المساعد.
تم حساب مقدار التخفيض بعدد الدورات التي تصل إلى العجلات الخلفية بوجود صندوق التروس المساعد، وعدم وجوده.
تم حساب عزم الدوران داخل صندوق التروس الرئيسي وحساب عزم الدوران داخل صندوق التروس المساعد ومدى تأثر العزم عند رفع صندوق التروس المساعد.

حدوث زيادة بعدد الدورات المنقولة للعجلات الخلفية.
حدوث انخفاض بعزم الدوران المنقول للعجلات الخلفية.
اختيار المشروع الأمثل من ناحية نقل المواد داخل الموقع الإنشائي باستخدام تقنية AHP
Authors: Naji Hafiz 
Published: July 2022

تعتبر المواد موردا أساسيا لكافة الصناعات ومنها الصناعة الإنشائية ، لان العملية الإنتاجية تعتمد عليها بصورة رئيسية ، لذلك يجب الاهتمام بهذا المورد المهم ومحاولة البحث في السبل التي يمكن من خلالها السيطرة والمتابعة لهذا المواد . يهدف هذا البحث إلى تقييم عملية نقل ومناولة المواد داخل المواقع الإنشائية التابعة إلى جامعة ديالى باستخدام تقنيةAHP لتقليل كلفة المناولة وتسهيلها وتقليل نسبة الضائعات خلالها ، ويتم ذلك بتحديد المعايير المستخدمة لتحديد الموقع الأمثل من ناحية إدارة المواد الإنشائية ، وكذلك تحديد قائمة بالمشاريع العاملة في جامعة ديالى لكي نختار الأمثل منها في هذا الجانب .ولغرض انجاز هذا الهدف ، فقد تم جمع البيانات الخاصة به من الأدبيات التي تناولت موضوعي التدرج التحليلي (AHP ) وإدارة حركة المواد داخل الموقع الإنشائي ، وأخيرا من المقابلات الشخصية من ذوي الاختصاص من المصممين والمنفذين في شركات الإنشاء . أظهرت نتائج تحليل البيانات لأفراد العينة ان معايير جدولة وتجهيز المواد واستلامها وفحصها ، خزن المواد ، مناولة وتوزيع المواد ، الضائعات في المواد والتخلص من المواد الفائضة هي أكثر المعايير أهمية لإجراء المقارنات الثنائية بين المشاريع ، وان معياري خزن المواد ومناولة وتوزيع المواد هي أكثر أهمية من بقية المعايير في المشاريع . وان مشروع شقق الأساتذة قد حصل على النصيب الأكبر من الأهمية النسبية بالمقارنة مع المشاريع الأخرى ، وفي النهاية تم التوصل إلى مجموعة من الاستنتاجات والتوصيات من
NEW DESIGN CORRELATIONS FOR SINGLE PHASE INDUCTION MOTOR SQUIRREL CAGE
Authors: Khalid G. Mohammad  
Published: July 2022

In this research, new easy and fast correlations derived from practical data for the design single phase squirrel cage induction motor that enable us to select its main dimensions with depending on the required power, see fig.(1), also making empirical correlations connecting between the motor power and its dimensions for multi-ranges. Data of these correlations were got practically and formulated mathematically by using Mathematical Matrix Model is called Pseudo Inverse.
دراسة تأثير الميثانول على درجة التحول لقطفة بنزين يماني
Authors: حامد ناصر بن هرهرة  
Published: July 2022

يدرس البحث تأثير الميثانول (Methanol Effect) على التحول المحفز (Catalytic Conversion) لقطارة بنزين من نفط يماني (Yemeni Gasoline Distillate) . استخدم في العملية عامل حفاز زيوليتي معدّل (Modified Zeolite Catalyst) محمول على سيليكات الألومنيوم (Aluminum-silicate) بهدف زيادة المساحة السطحية للتفاعل وخفض درجة حرارة العملية لجعلها إقتصادية . درجات حرارة التفاعل 500 ° م و 540 ° م عند ضغط جوي ثابت (Atmospheric Pressure). لوحظ إن إضافة الميثانول إلى قطفة البنزين أدى إلى رفع درجة التحول للبنزين (Conversion point of Gasoline) من 47 % إلى 86 % وزناً . هذا التأثير الإيجابي أدى بدوره إلى إرتفاع كمية المنتجات من المركبات العطرية (Aromatic Compounds (B. T. X.)) والمركبات الأوليفينية (Olefin Compounds (E. P. B.)) . حيث كانت نسبة العطريات 22 % ثم إرتفعت إلى 34 % وزناً والأوليفينات من 20 % إرتفعت إلى 40.1 % وزناً ، هذا عند نسبة الميثانول إلى البنزين في اللقيم (1:1) .
PROPOSED ALGORITHM FOR TCP/IP TRAFFIC OVER ATM NETWORK
Authors: Saad Qassim Fleh  
Published: July 2022

In this work, a suggested algorithm is designed that operates at ATM Adaptation Layer (AAL) layer, this algorithm is named Adding Identification number and Matching (AIDM) algorithm. The resulting transport protocol from using AIDM algorithm is named as Improved TCP/IP Reno. AIDM is an efficient recovering technique that attempts to make TCP\IP Reno performance less sensitive to cell losses. Improve TCP/IP Reno is presented and a result is compared with other TCP\IP Reno .This result explain the network performance is enhanced about 20.53 % as average of the enhancement rates of the given samples and the period of time required to recover the damaged cell is reduce .
دراسة نظرية وعملية لانتقال الحرارة بالحمل الحر من اسطوانة أفقية مغمورة بوسط مسامي مشبع
Authors: احمد حسن احمد ابراهيم  
Published: July 2022

أجريت دراسة نظرية وعملية لانتقال الحرارة بالحمل الحر من اسطوانة مغمورة في وسط مسامي مشبع. تضمن الجانب النظري اشتقاق المعادلات الحاكمة للزخم والطاقة وباستخدام نموج دارسي للجريان , إن المعادلتين الناتجتين هما من نوع القطع الناقص تم حلهما بطريقة الفرو قات المحددة مع انتظام درجة حرارة سطح الاسطوانة كشرط حدي وتم تثبيت عدد بكلت ضمن مدى الانتقال الطبيعي مع تغيير عدد رالي لقيم تتراوح بين (10 إلى 50) على التوالي حيث تم استخراج معدل انتقال الحرارة بدلالة عدد نسلت لهذه الأعداد.
أما الجانب العملي فقد تضمن بناء نموذج تجريبي متآلف من اسطوانة من الحديد قطرهاmm(20) مسخنة من الداخل كهربائيا ومغمورة في حشوه من كرات الزجاج الموضوعة في وسط الاختبار. أوضحت النتائج النظرية والعملية على السواء إن معدل انتقال الحرارة للحالة المستقرة يزداد بازدياد عدد رالي أو إن عدد نسلت يرتبط مع عدد رالي وفق العلاقة Nu=4.311lnRa-11.1 للجانب العملي و Nu=2.155 lnRa-3.98 للجانب ألنضري.
PREDICTION OF PHYSICAL & THERMODYNAMICAL PROPERTIES FOR BINARY SYSTEMS USING EQUATION OF STATE
Authors: Karima M. Putrus  
Published: July 2022

A single equation of state (EOS) such as Soave – Redlich Kwong EOS can accurately describe both the liquid and vapour phase, therefore it is used for binary systems to predict some physical and thermodynamical properties. Two methods, which are Soave- Redlich Kwong and Generalized Compressibility Factor Correlation are compared and adopted for the cubic equation of state to calculate molar volume, density, viscosity, thermal conductivity, specific heat and compressibility factor.
In this paper a computer program is developed requiring critical properties to perform these calculations. The results are compared with some available literature data, and we find that the computer programs are shown to be adequately reliable for this purpose, with deviation in some properties equal to (3.6%) as other predictive programs and procedures. Also from this comparison we notice that the Generalized Compressibility Factor Correlation method is better and more general than the Soave- Redlich Kwong
Nonlinear Analysis of Reinforced Concrete Beams Strengthened with Prestressed CFRP sheets Under Cyclic Load
Authors: Jinan L. Abbas  
Published: July 2022

Analysis of reinforced concrete beams strengthened by prestressed CFRP sheets has been investigated in this paper. A three dimensional finite element analysis ANSYS computer program (version 9.0) was conducted to obtain the response of the strengthened beams. The eight –node brick elements(solid 65) are used for the idealization of concrete while the CFRP sheets are idealized by using three-dimensional layered elements (solid 46).The steel plates are idealized by using three dimensional solid elements (solid 45).Five beams are analyzed in study ,four with prestressed –CFRP sheets and one with non-prestressed- CFRP sheet. The effect of different level of prestress ,induced by prestressing the CFRP –sheets, on the cracking loads and flexural stiffness of the strengthened beams are studied. It is found that the cracking load and the flexural stiffness are significantly increased as the level of prestress increased. The response of the strengthened beam under cyclic loads is also conducted in terms of deflection versus number of cycles which is related to the cyclic behaviour of the constituent materials used in the beam ( concrete , tension steel, and CFRP sheets).
The deformation of each these materials under cyclic loadings is presented in terms of measured strains as a percent of the number of cycles of fatigue. The results obtained from finite element analysis are compared with available experimental results and the comparison gives good accuracy
COMPUTATION OF HYDRODYNAMIC CHARACTERISTICS OF WATER FLOW IN ELECTRICAL SUBMERSIBLE PUMP
Authors: Mohammed K. Abbas  
Published: July 2022

The electrical submersible pump (ESP) systems play an important role in the industry and many engineering applications. It is frequently used in the drinking water purification units for lifting water from well. The centrifugal pump is the most important part of ESP systems. In the present work, a simulation have been carried out using Computational Fluid Dynamic CFD techniques and commercial software based on the finite volume method, ANSYS® CFX® Release 11.0. The results of the simulations include the pressure fields, velocity field, and velocity vector obtained to the internal flow in the impeller and diffuser channels of a centrifugal pump at flow rate 0.005m3/s. A stationary flow with constant boundary conditions is proposed. A comparison between the simulation of the present work and the head capacity of the performance curve that obtained practically was performed and showed satisfactory agreement
دراسة تحليلية لمياه مناطق الرشح في خزان سد حمرين
Authors: ثاير حبيب عبد الله الجبوري  
Published: July 2022

يقع سد حمرين على نهر ديالى وله قابلية خزن تبلغ 3.95 كم مكعب بمنسوب 107.5 عن مستوى سطع البحر، درست مياه الترشيح من خمسة مناطق على الجهة اليسرى من السد بشكل شبه دوري منذ عام 1989. دلت النتائج على وجود مناطق فواصل أو شقوق مما يساعد على ترشيح المياه إضافة إلى كون اتجاه مضروب الطبقات يساعد على الرشح في المنطقة كما إن التحاليل دلت على زيادة نسبة الأملاح الذائبة مع الزمن مما يدل على ذوبان المعادن أو الصخور بشكل مستمر .
Sales and Purchases Of Sharia Mutual Funds Impact During Covid-19 Pandemic
Authors: Atika Atika Zahra Maulida , Agus Purnomo  
Published: July 2022

The outbreak of the COVID-19 virus has had an impact on the world economy and the country. The Covid-19 outbreak that has hit the whole world has resulted in countries implementing policies to reduce the spread of the COVID-19 virus by implementing a lockdown, restricting business activities, and banning long-distance travel. In 2020 sharia mutual funds sold 289 portfolios and in 2021 sharia mutual funds sold 295 lots. The development of Net Asset Value performance in sharia mutual fund products from 2015 to 2021 was 74.37%. The existence of the covid 19 virus does not affect the buying and selling transactions of Islamic mutual funds. The research method uses descriptive quantitative methods. In collecting data, the researchers distributed a questionnaire of 100 respondents to investors, investment managers, and the public in South Kalimantan. in 2018 to 2019 the number of investors was 53,735.58 while in 2019 to 2020 the number of investors reached 74,367.44 and from 2020 to 2021 the number of investors was 72,668.70 even though the pandemic was ongoing.
Keywords: Sales, Purchases, Sharia Mutual Transactions and covid 19.
Tinjauan Hukum Islam Terhadap Nilai-Nilai Kafaah dalam Praktik Perkawinan Sayyid di Sulawesi Selatan
Authors: Azis Muh. Ilham , Musyahid Achmad , Fatmawati Fatmawati 
Published: July 2022

Penelitian ini merupakan field research kualitatif deskriptif yang merupakan penelitian lapangan (field research) maka metode Pendekatan yang digunakan adalah Pendekatan Teologi Normatif dan Pendekatan Yuridis Empiris. Sumber data yaitu data primer yakni data empiris yang bersumber atau yang didapatkan secara langsung dari Sayyid atau Syarifah. Data sekunder yaitu data pendukung yang telah tersedia dimana penelitian hanya perlu mencari tempat untuk mendapatkannya. Data Tersier Sumber data tersier ini dimaksudkan sebagai bahan penunjang sumber dan primer dan sekunder. Tekhnik pengumpulan data melalui Observasi, Interview (wawancara), dan dokumentasi.Selanjutnya data pada penelitian ini menggunakan Riset Lapangan dengan melalui wawancara serta observasi, sedangkan teknik pengelolahan dan analisis data dilakukan melalui tiga tahapan yaitu: reduksi data, penyajian data dan penarikan kesimpulan.Hasil penelitian menunjukkan bahwa (1) Konsep Kafaah dalam perkawinan keturunan Sayyid di Sulawesi Selatan masih mempertahankan konsep Kafaah nasab. (2) Kriteria Kafaah yang ada dalam masyarakat Sayyid ada tiga, yang pertama agama yaitu seorang Syarifah tidak sekufu dan tidak dibenarkan menikah dengan seseorang yang berbeda agama, yang kedua nasab seorang syarifah tidak sekufu dengan laki-laki yang non sayyid, dan yang ketiga Aliran seorang syarifah ahlussunnah wal jamaah tidak sekufu dengan laki-laki yang yang bukan ahlussunnah wal jamaah . (3) Hukum Islam dalam permasalahan kafaah terdapat perbedaan pendapat dikalangan ulama mazhab./ Namun semua tetap mendasarkan pada faktor agama yang diharuskan pada kesepadanan dalam perkawinan selain faktor yang lain (nasab, kemerdekaan, pekerjaan, kekayaan).Implikasi Penelitian Konsep (1) kafaah hendaknya dipahami dan dikembalikan pada tujuan awalnya yakni untuk mencapai keluarga yang sakinah mawaddah dan rahmah. (2) Dalam sistem perkawinan, persoalan nasab hendaknya tidak menjadi penghalang bagi dua insan yang hendak mengarungi bahtera rumah tangga, asalkan calon mempelainya adalah seorang muslim yang memiliki akhlakul karimah. (3)Perlunya merelevansikan hukum yang berkaitan dengan konsep kafaah dalam fiqih munakahat dengan kafaah yang berlaku dalam suatu komunitas masyarakat serta perkembangan zaman. Kata Kunci : Tinjauan Hukum Islam, Kafaah, Praktik Perkawinan Sayyid