bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal Reactive Power Dispatch Using Improved Chaotic PSO Algorithm with the Wingbeat Frequency
Authors: Adetona Sunday , John Michael , Umar Salmar 
Published: December 2022

AbstractThe importance of reactive power to the economy and security of power systems cannot be overemphasized. For instance, Transmission losses increase when reactive power is unevenly distributed on transmission network; and power quality is affected as well. The cheapest way of reducing these transmission lines losses is via reactive power dispatch approach. This study therefore proposes an Improved Chaotic Particle Swarm Optimization algorithm (ICPSO) with the primary aim of reducing real power transmission line losses while adhering to system constraints. Although the traditional PSO has a fast convergence speed, it falls easily into local optimum and it is slow at the later stage of convergence. The ICPSO is proposed in this research to overcome these shortcomings. The approach combines PSO with chaotic map which increases particles’ diversity, allowing particles to explore the search region more; and a wingbeat frequency component which helps to sustain the rate of convergence of particles. MATPOWER 7.1 in MATLAB 2019a environment was utilized for the implementation. The purported algorithm was examined on IEEE14 and IEEE30 Test Beds respectively. When tried out on IEEE14 Test bed, real power loss was reduced from 13.393 MW to 12.260 MW; whereas real power transmission line loss was brought down from 17.557 MW to 15.977 MW when tried out on IEEE30 Test Bed. In terms of reducing real power transmission lines losses, the simulation results show that the proposed approach performs better when compared with other algorithms.
Public Sector Entrepreneurship: Scientific Mapping and Research Agenda
Authors: Olumekor Michael 
Published: December 2022

Abstract

Background and Purpose: The concept of entrepreneurship within the public sector is one of the most fiercely debated areas of entrepreneurial research. It has been studied across several academic disciplines such as in management, public administration and political economy, among others. However, while academic output has increased, we found no prior studies providing a clear mapping of the field. Therefore, this research sought to comprehensively examine all peer reviewed articles on public sector entrepreneurship.

Methods: Using the Scopus scientific database, our analysis included 133 articles from 1982 to 2022. Following a thorough manual review process, we used VOSviewer to provide a mapping of the field, before identifying research gaps and suggesting directions for future research. Our scientific mapping revealed the leading and emerging thematic clusters in the field.

Results: Our results revealed that the leading themes in public sector entrepreneurship include innovation, entrepreneurship, public sector, governance, reinventing government, and public organisations, while emerging trends include public health entrepreneurship, public health innovation, public choice, sustainability, and entrepreneurial orientation, among others.

Conclusion: Our research provides useful insights to all researchers interested in examining entrepreneurship within the public sector or in non-profit organisations.
Building a Resilient Local Economy: The Influence of Global Crises on Deglobalization of the Tourism Supply System
Authors: Kesar Oliver 
Published: December 2022

AbstractIn the context of current deglobalization trends this research aims to investigate the need for changes in tourism supply system by analysing perception and expectations of procurement managers and suppliers of goods and services related to growing inflationary pressure on business costs and raising concerns about vulnerability and instability of the global supply chains. Based on survey and semi-structured interviews conducted among hotel procurement managers and local suppliers in popular seaside tourism destinations in Croatia, this research provides empirical evidences of the necessity to strengthen local capacities for the production of goods and service delivery using local resources in accordance to the principles of sustainable tourism development. The greatest concern respondents showed regarding the rising prices of energy, which was expected due to actual political situation in Europe. Study also provides some policy recommendations for ‘reinventing’ local production of goods and services for tourism-related purposes.
HUBUNGAN ANTARA KEMAMPUAN SPASIAL TERHADAP HASIL BELAJAR KIMIA
Authors: Rahman Safrina Azaria , Hadisaputra Saprizal , Supriadi Supriadi , Junaidi Eka 
Published: December 2022

Kesuksesan mahasiswa dalam memperoleh hasil belajar kimia yang maksimal dapat dipengaruhi oleh kemampuan spasial yang mereka miliki. Penelitian ini bertujuan untuk mengetahui (1) bagaimana kemampuan spasial mahasiswa, (2) bagaimana hasil belajar kimia mahasiswa, serta (3) adakah hubungan yang positif dan signifikan antara kemampuan spasial terhadap hasil belajar kimia mahasiswa, jika ada seberapa besar hubungannya. Jenis penelitian ini merupakan penelitian korelasional dengan pendekatan kuantitatif. Populasi penelitian ini adalah mahasiswa semester empat Program Studi Pendidikan Kimia Universitas Mataram tahun akademik 2021/2022 yang berjumlah 68 mahasiswa dan diambil sebanyak 58 mahasiswa sebagai sampel menggunakan teknik Simple Random Sampling. Data dikumpulkan menggunakan teknik tes dan dokumentasi. Data dianalisis menggunakan teknik analisis statistik deskriptif dan inferensial, dimana hipotesis penelitian diuji menggunakan analisis bivariat dan regresi linier sederhana. Hasil penelitian menunjukkan: (1) kemampuan spasial mahasiswa berada pada kategori sangat rendah, (2) hasil belajar kimia mahasiswa berada pada kategori cukup, serta (3) terdapat hubungan yang positif dan signifikan antara kemampuan spasial terhadap hasil belajar kimia mahasiswa dengan nilai koefisien korelasi sebesar 0,391 dan tingkat hubungan dalam kategori rendah.
Kata kunci: Kemampuan spasial, hasil belajar, kimia
Osmanlı İmparatorluğunda Siyasal İdare ile Finansal İdare Arasındaki Güç Mücadelesi: Balta Limanı Anlaşması’ndan Birinci Dünya Savaşı’na
Authors: GÜNDOĞAN Mete , ÖZSARAÇ Yakup 
Published: December 2022

Bu çalışmada Osmanlı İmparatorluğunun 1838 Balta Limanı Antlaşması (BLA) ile başlayıp, Birinci Dünya Savaşına kadar süren bir zaman dilimi içerisindeki ekonomik, mali ve siyasi analizi yapılmıştır. Çalışmada özellikle BLA ile Osmanlı İmparatorluğunun dünyaya finansal entegrasyonu ve siyasi idarenin çözümlemeleri ve etkileri analiz edilmiştir.
BLA ile Osmanlı toprakları uluslararası ticarete açılmış ve cari açık vermiştir. Takip eden dönemde uluslararası ticaret yeni bir boyut almış ve Osmanlı için uluslararası ödemeler sistemi ortaya çıkarmıştır. Bu durum bankacılık sisteminin Osmanlı toprakları içerisine girmesine ve yapılanmasına temel teşkil etmiştir. BLA anlaşması sonucunda önceleri ekonomik rahatlama yaparken, ilerleyen süreçlerde ise ekonomik ve mali zorluklara neden olmuştur. Siyasi süreçlerin ortaya çıkmasıyla BLA sorgulanmaya başlamıştır. Bu sorgulamalar sistemin kendisine değil, kullanımına yönelik yapılmıştır. Bu çerçevede “daha nitelikli” olacağına inanılan idareciler sıklıkla değiştirilmiştir. Osmanlı yöneticileri uzun vadeli iktisadi sonuçlardan çok, kısa vadede Avrupalı devletlerden sağlanacak siyasal veya mali desteği düşünmüşlerdir. Süreç içerisinde; 1854 dış borç alım süreci, 1863 Osmanlı Bankası ve para basma yetkisinin devri sonuçta 1876’da moratoryum süreci yaşanmıştır. Bu süreçten 1881 Düyun-ı Umumiye İdaresi ile çıkış aransa da siyasal sistem etkinliğini kaybetmiş ve neticede maliye ile ekonominin kontrolü tamamen yabancıların ve gayri-müslimlerin eline geçmiştir. Kısaca makalede; siyasal güç mücadelesi ile finansal güç mücadelesinin mukayeseli analizi yapılmıştır.
Waste Water Treatment Technology by The Anaerobic with IC Reactor
Authors: NURISLAMIYATI DINDA ULZANAH 
Published: December 2022

In this industrial 4.0 era, there are more industries built in Indonesia. During the operation of an industry, the waste generated is not spared. These industrial wastes, if not managed properly, can pollute the environment and can endanger the environment and health. The waste treatment process can be done in several ways, such physically, chemically and biologically. With the smart city concept, the government, society, industry, transportation and also the environment must be smart, especially in utilizing existing resources so that they can be used efficiently and effectively. For the development of waste treatment technology and to fulfill this concept, the industry must also play a role in choosing an efficient technology. Therefore, to utilize energy effectively and efficiently, in handling liquid waste from industrial production, anaerobic waste treatment technology using IC (Internal Circulation) Reactor can be used. IC Reactor is considered as an excellent and efficient technology development breakthrough. This technology uses 3-phase separation to produce gas, biomass and final waste. In this technology, in addition to cleaning waste water, biogas is also produced at the same time which can be used as a reusable resource. In addition, this technology can also save costs and energy, so that the waste treatment process using an IC Reactor is a very effective and efficient treatment method.
هكذا تحدث المتمردون : دراسة على عينة من زعماء الحركات الاجتماعية والاحتجاجية في مصر بالعقد الأول من القرن الحادي والعشرين
Authors: AbuAl-Khair Omaima Mohammed 
Published: December 2022

مُلَخَّصُ البَحث
تسلط هذه الدراسة الضوء على خبرة المقاومة والنضال والتغيير لدى زعماء الحركات الاجتماعية والاحتجاجية في مصر . واعتمدت على منهج دراسة الحالة ، ودليل المقابلة المتعمقة كأداة لجمع البيانات وأثارت تساؤلات أهمها ما هي أهم المتغيرات الاجتماعية الفاعلة لتشكيل حركات اجتماعية واحتجاجية ؟ وما هي طبيعة العلاقة بين هذه الحركات وبين الجماهير والسلطة ؟وتؤكد الدراسة على عدم قدرتنا على فهم الحركات الاجتماعية والاحتجاجية بمعزل عن الدولة ، وتفسير ظهور هذه الحركات في ضوء نموذج (م.ع.أ.ج) والذي يعكس قدرة الدولة على تحقيق وظائفها (المواطنة، العدالة ، الاستجابية ، الحماية) وتم تفسير علاقة هذه الحركات بالجماهير في ضوء نظرية الفرص و فرضياتها حول المتسابق الحر ، والركوب بالمجان ، والخبرات الجمعية .وكشفت نتائج الدراسة أن من أهم العوامل لظهور الحركات الاجتماعية والاحتجاجية يرجع إلى فشل الدولة الجسيم في أداء وظائفها المرتبطة بالمواطنة والعدالة والاستجابية والحماية ، وأن الوسائل والآليات التي استخدمتها الحركات كانت سلمية تماماً ولم تلجأ إلى العنف حتى لا تفقد شرعيتها وسط الجماهير .
دور برامج التوطين في توظيف المنتفعين من الضمان الاجتماعي في مجتمع الإمارات
Authors: Al-Raisi Fatima Khamis , Alothman Husein 
Published: December 2022

استهدفت الدراسة التعرف على دور برامج التوطين التدريبية في توظيف المنتفعين من الضمان الاجتماعي , من وجهة نظر المتلحقين بالبرامج التدريبية من المنتفعين من الضمان الاجتماعي في مجتمع الإمارات , إذ تكونت عينة الدراسة من 766 منتفع و منتفعه من الضمان الاجتماعي على مستوى دولة الإمارات العربية المتحدة , و لتحقيق أهداف الدراسة قامت الباحثة باستخدام المنهج الوصفي لتحليل بيانات أفراد عينة الدراسة , تم تحليل و تفسير البيانات و معالجتها إحصائيا باستخدام برنامج spss , و ذلك بالمسح الاجتماعي بالاستعانة بأداة الدراسة الاستبيان للحصول على البيانات الكمية , أما البيانات النوعية فقد تم باستخدام المقابلة الشخصية مع مجموعة من مسؤولي وزراة تنمية المجتمع و وزارة الموارد البشرية و التوطين لجمع البيانات.
وقد أظهرت نتائج الدراسة بوجود دلالة إحصائية بين متغيرات الدراسة الديمغرافية (العمر، المستوى التعليمي، الدخل، الإمارة) من جهة وبين المتغير التابع للدراسة وهي توظيف المنتفعين من الضمان الاجتماعي.
مراحل اتحاد العرشين الانكليزي والاسكتلندي (1603-1707)
Authors: Alzuhairi Rana Abdul Jabar H. 
Published: December 2022

تهدف هذه الدراسة إِلى معرفة مراحل اتحاد العرشين الانكليزي – الاسكتلندي للمدة مابين(1603-1707)، أدى اتحاد العرشين عام (1603) مشكلة هيكلية في جسد مملكة انكلترا، اذ اصبحت مملكة واحدة تحكم ثلاثه ممالك منفصلة اسكتلندا وانكلترا وايرلندا، ان الاشكالية التي يعرضها البحث تتمثل بسؤال مركزي هو " هل كانت فكرة توحيد العرشين الانكليزي والاسكتلندي مسألة محورية نابعة من طبيعة الحاجة إِلى توحيد المؤسسات الدستورية بين المملكتين، ام هي مسألة اَنية طارئة وجدت لها داعمين في كلا الدولتين وانتهت باعلان الاتحاد عام 1707" ؟ اعتمدت الباحثة على منهج البحث التاريخي، قسم البحث على ثلاثة محاور، بحث المحور الأوَّل الجذور التاريخية للاتحاد الانكلو- اسكتلندي حتى عام(1685)، فيما ناقش المحور الثاني موقف البرلمان الاسكتلندي من ولاية العهد(1685-1702) أمّا المحور الثالث فقد وضح الجهود السياسية لاتحاد العرشين الانكليزي والاسكتلندي.
A digitális fekete lyukak kialakulásától az Európai Unió irányelvein át a magyar szerzői jogi törvény módosításáig
Authors: Zsuzsanna Tószegi 
Published: December 2022

Mit takar ez a furcsa kifejezés: „digitális fekete lyuk”? Hogyan alakult ki a XX. századi digitális fekete lyuk? Miért mutatkoznak hiányok az online hozzáférhető művek terén? Megakadályozható-e, visszafordítható-e ez a kedvezőtlen folyamat? Milyen intézkedéseket tett az Európai Unió az online tartalomhoz való hozzáférés bővítése érdekében? Hogyan tükröződnek az uniós elvek a magyar szerzői jogi törvényben?
A digitális fekete lyuk névvel illetett jelenség olyan hatalmas károkat okozott a kulturális örökség online elérésében, hogy arra már a legmagasabb döntéshozói szinten is reagálni kellett. Ebben a tanulmányban az Európai Unió új szerzői jogi irányelve alapján módosított magyar szerzői jogi szabályozás lényeges elemeit mutatjuk be. Ezen intézkedések hatására a digitális fekete lyuk már a közeljövőben jelentősen szűkülhet.
Design and synthesis of new thiazolidinone/uracil derivatives as antiproliferative agents targeting EGFR and/or BRAFV600E
Authors: Alshammari Mohammed B. , Aly Ashraf A. , Youssif Bahaa G. M. , Bräse Stefan , Ahmad Akil , Brown Alan B. , Ibrahim Mahmoud A. A. , Mohamed Asmaa H. 
Published: December 2022

Thiourea derivatives of uracil were efficiently synthesized via the reaction of 5-aminouracil with isothiocyanates. Then, we prepared uracil-containing thiazoles via condensation of thioureas with diethyl/dimethyl acetylenedicarboxylates. The structures of the products were confirmed by a combination of spectral techniques including infra-red (IR), nuclear magnetic resonance (NMR), mass spectrometry (MS) and elemental analyses. A rationale for the formation of the products is presented. The newly synthesized compounds were evaluated for their in vitro antiproliferative activity against four cancer cell lines. The compounds tested showed promising antiproliferative activity, with GI50 values ranging from 1.10 µM to 10.00 µM. Compounds 3c, 5b, 5c, 5h, 5i, and 5j were the most potent derivatives, with GI50 values ranging from 1.10 µM to 1.80 µM. Compound 5b showed potent inhibitory activity against EGFR and BRAFV600E with IC50 of 91 ± 07 and 93 ± 08 nM, respectively, indicating that this compound could serve as a dual inhibitor of EGFR and BRAFV600E with promising antiproliferative properties. Docking computations revealed the great potency of compounds 5b and 5j towards EGFR and BRAFV600E with docking scores of −8.3 and −9.7 kcal/mol and −8.2 and −9.3 kcal/mol, respectively.
Effect of cardiac shock wave therapy plus optimal medical therapy on rehospitalization in patients with severe coronary artery disease: A meta-analysis and trial sequential analysis
Authors: Li Peng , Jia Na , Liu Bing , He Qing 
Published: December 2022

ObjectiveSeveral small sample-sized clinical studies have demonstrated that cardiac shock wave therapy (CSWT) might reduce the risk of rehospitalization in patients with severe coronary artery disease (CAD). However, other observational studies did not reported that clinical benefit of CSWT. Therefore, the effect of CSWT plus optimal medical therapy (OMT) on rehospitalization is still controversial.MethodsWe performed an updated meta-analysis and systematic review of randomized clinical trials (RCTs) and prospective cohort studies identified in systematic searches of Pubmed, Embase, the Cochrane library, theClinicalTrials.govwebsite and Chinese SinoMed Database (up to December 2021). Primary endpoint was the rate of major adverse cardiac events (MACEs, the composite outcome of mortality, coronary artery revascularization, and rehospitalization). Meta-regression and subgroup analyses were used to identify possible contributors to between-study variances in the HDRS. Required information size (RIS) was calculated with trial sequential analysis (TSA).ResultsA total of 11 RCTs and 5 prospective cohort studies involving 1,149 patients with a mean follow-up of 10.3 months (range 3–72) months were included. Overall, CSWT plus OMT significantly decreased the rate of MACEs compared with the OMT group (RR, 0.39; 95% CI, 0.29–0.53), which was mainly attributed to markedly lower risk of rehospitalization (RR, 0.37; 95% CI, 0.27–0.51). Subgroup analysis showed that the pooled RRs for MACEs was significantly lower in studies enrolling patients with higher baseline Canadian Cardiovascular Society angina class (≥2.2) (RR, 0.36; 95% CI, 0.26–0.50) or studies with short follow-up period (followed ≤ 6 months, RR, 0.39; 95% CI, 0.24–0.64; followed 7–12 months, RR, 0.38; 95% CI, 0.26–0.54) or studies with HF with reduced ejection fraction (RR, 0.31; 95% CI, 0.13–0.72) or with preserved ejection fraction (RR, 0.40; 95% CI, 0.29–0.56). TSA showed that The RIS for MACE was 935, and the accrued information size was 577.ConclusionCardiac shock wave therapy plus OMT could decrease the rate of rehospitalization among patients with severe CAD. However, this result must be interpreted with caution, for the evidence supporting the use of CSWT for severe CAD is limited by the small sample size and short follow-up period of previous studies. Larger RCTs with longer follow-up are warranted to confirm these findings.Systematic review registration[https://inplasy.com/], identifier [INPLASY202210103].
Comparison of novel markers of metabolic complications and cardiovascular risk factors between obese non-diabetic and obese type 1 diabetic children and young adults
Authors: Kącka Anna , Charemska Anna , Jarocka-Cyrta Elżbieta , Głowińska-Olszewska Barbara 
Published: December 2022

IntroductionFor the past years, the prevalence of obesity is growing in the general population of children, as well as among diabetic patients, resulting in increased risk of cardiovascular complications. Type 1 diabetes mellitus (T1DM) is one of the most common chronic diseases in children and young adults, leading to decreased life quality and lifespan, with obesity being recognized recently as a major contributing factor to these health problems. The objective of this study was to analyze and compare the selected novel markers for metabolic complications of obesity and vascular risk factors between obese non-diabetic and obese T1DM children and young adults.MethodsOne hundred four subjects, aged between 10 and 24 years (31 with T1DM and excessive body weight, 41 with obesity without diabetes, and 32 with T1DM and normal weight), and 32 matched lean controls were included in the study. Clinical characteristics, blood pressure measurements, daily requirement for insulin, HbA1c%, plasma lipids, fetuin-A, E-selectin, and osteoprotegerin levels were compared with respect to body mass index (BMI), body mass index standard deviation score (BMI-SDS), and carotid intima-media thickness (cIMT) of common carotid arteries.ResultsPatients with T1DM and excessive body weight compared to non-diabetic obese subjects had similar values of systolic blood pressure (125.6 ± 8.2 vs. 127.3 ± 12.9 mmHg, p = 0.515), diastolic blood pressure (78.19 ± 7.03 vs. 78.02 ± 8.01 mmHg, p = 0.918), cholesterol (175.26 ± 34.1 vs. 163.51 ± 26.08 mg/dl, p = 0.102), LDL (108.03 ± 32.55 vs. 112.22 ± 26.36 mg/dl, p = 0.548), and triglyceride levels (118.19 ± 71.20 vs. 117 ± 55.80 mg/dl, p = 0.937); all values were found to be higher compared to non-obese T1DM and healthy controls. HbA1c level and insulin resistance indices were significantly worse in T1DM obese vs. T1DM non-obese patients. Fetuin-A levels were higher among obese non-diabetic patients (p = 0.01), and E-selectin and osteoprotegerin levels were similar in both groups with obesity, but higher than in the reference group. There were no statistical differences in cIMT with T1DM with normal weight, excessive weight, and non-diabetic obese children; however, the cIMT value was higher compared to the reference group.DiscussionNovel markers of metabolic complications of obesity are similar between obese T1DM and non-diabetic subjects. Obesity in patients with T1DM results in worse metabolic control, insulin resistance, and increased risk for vascular complications.
A model based on clinical data and multi-modal ultrasound for predicting cervical lymph node metastasis in patients with thyroid papillary carcinoma
Authors: Wang Bin , Cao Qing , Cui Xin-Wu , Dietrich Christoph F. , Yi Ai-jiao 
Published: December 2022

ObjectiveThe aim of this study was to explore diagnostic performance based on clinical characteristics, conventional ultrasound, Angio PLUS (AP), shear wave elastography (SWE), and contrast-enhanced ultrasound (CEUS) for the preoperative evaluation of cervical lymph node metastasis (CLNM) in patients with papillary thyroid carcinoma (PTC) and to find a reliable predictive model for evaluating CLNM.Materials and methodsA total of 206 thyroid nodules in 206 patients were included. AP, SWE, and CEUS were performed for all thyroid nodules. Univariate analysis and multivariate logistic regression analysis were performed to ascertain the independent risk factors. The sensitivity, specificity, and the area under the curve (AUC) of independent risk factors and the diagnostic model were compared.ResultsSex, age, nodule size, multifocality, contact extent with adjacent thyroid capsule, Emax, and capsule integrity at CEUS were independent risk predictors for CLNM in patients with PTC. A predictive model was established based on the following multivariate logistic regression: Logit (p) = −2.382 + 1.452 × Sex − 1.064 × Age + 1.338 × Size + 1.663 × multifocality + 1.606 × contact extent with adjacent thyroid capsule + 1.717 × Emax + 1.409 × capsule integrity at CEUS. The AUC of the predictive model was 0.887 (95% CI: 0.841–0.933), which was significantly higher than using independent risk predictors alone.ConclusionOur study found that male presence, age &lt; 45 years, size ≥ 10 mm, multifocality, contact extent with adjacent thyroid capsule &gt; 25%, Emax ≥ 48.4, and interrupted capsule at CEUS were independent risk predictors for CLNM in patients with PTC. We developed a diagnostic model for predicting CLNM, which could be a potentially useful and accurate method for clinicians; it might be beneficial to surgical decision-making and patient management and for improving prognosis.