bluuebunny/crossref_metadata_2025 huggingface dataset:
YouTube: Salud y bienestar en la era del prosumidor . Análisis de vídeos de YouTube sobre dietas milagro
Authors: Castillo-Abdul Bárbara , Blanco-Herrero David
Published: July 2022

La presente investigación busca conocer la calidad de los vídeos de YouTube sobre dietas milagro y la interacción que generan, sobre todo dado el potencial riesgo que pueden suponer para los espectadores que sigan sus consejos en caso de que estos puedan resultar nocivos. Para ello se analizaron 50 vídeos en español e inglés, siendo estos los más vistos en la categoría de dietas rápidas. A través de un análisis de contenido cuantitativo y cualitativo, se evaluó la calidad y la credibilidad transmitida en ellos, así como los efectos de estas dos características sobre la interacción. Los resultados sugieren que la calidad de estos contenidos en ocasiones es muy reducida, con frecuentes alusiones a «productos milagro» y con recomendaciones sin base científica o sin garantía de funcionamiento, e incluso con indicaciones engañosas y consejos perjudiciales para la salud. Sin embargo, la presencia de información equilibrada, la alusión a fuentes fiables, la inclusión de expertos en la materia, la mención de cualificaciones o la formación previa influyen en un mayor volumen de interacciones positivas, mientras que la información sesgada o el uso de fuentes poco fiables se correlaciona con una menor cantidad de interacciones. En general, se comprobó que los vídeos que apuestan por elementos de calidad no lo hacen de manera aislada, mientras que aquellos que recurren a estrategias incorrectas también tienden a hacerlo en varias dimensiones. Todo esto demuestra que, aunque la exposición a estas grabaciones es muy elevada y la calidad resulta, en general, reducida, la inclusión en ellos de elementos de confianza repercute positivamente en la interacción con la audiencia.
Animacions en stop-motion: una oportunitat per aprofundir en el model cineticomolecular de la matèria.
Authors: Barbero Camps Elisabet
Published: July 2022

El model cineticomolecular és primordial per a la interpretació de diversos fenòmens de la matèria i constitueix una base de l’aprenentatge de la química. Però les partícules no són observables i alguns aspectes del model són complexos d’integrar: per exemple, el moviment de les partícules i els seus canvis amb la temperatura tenen molta importància en el model, però difícilment es descriuen en representacions gràfiques. Per superar aquestes dificultats d’aprenentatge a 2n d’ESO s’ha desenvolupat un projecte basat en la creació de vídeos en stop-motion amb el qual els alumnes aprendran a planificar un guió per a descriure un fenomen (els estats de la matèria, un canvi d’estat, la dilatació...) i a reproduir amb dibuixos i materials manipulatius el model cineticomolecular per tal de representar la interpretació dels processos microscòpics de diversos fenòmens quotidians.
A Central Bank Digital Currency For India?
Authors: Eichengreen Barry
Published: July 2022

We review arguments for CBDC issuance in India. These include facilitating payments, enhancing financial inclusion, enabling the central bank and government to retain control of the payments system, facilitating cross-border transactions, reducing dependence on the dollar-dominated global payments system, and providing an encompassing platform for digital financial innovation. We then compare progress in India with other countries. In setting an end-2022 target date for issuance, India is in line with the other BRICS, but not with other countries with comparable levels of per capita GDP, which have been more reluctant to commit to a date. Nor is it in line with other countries with comparably independent central banks, which have been more cautious about setting a deadline. Finally, we sketch a roadmap and timeline for India’s CBDC project going forward.
Female Representation in Corporate Governance and Influence on the Firm’s Performance in Botswana
Authors:   School of Business Administration, Zhejiang Gongshang  University, T. Nkgowe Stancey , Chinhema Sandra
Published: July 2022

When concerned to discuss role of women in corporate governance of Africa, gender discrimination and inequality become highly prominent. Thus, the current study aims to evaluate the gender inequality and female representation in the corporate governance of Africa, with special reference to Botswana, and analyze its impact on firm’s performance. To attain the objective of the current study, the research followed qualitative systematic review methodology. Through this methodology, the research relied on the review of already published reports and literature. The data was collected through authentic journals, whereas the articles were accessed through scholarly search engines. The findings revealed that women’s participation as corporate governance is too low in Sub-Saharan Africa, especially in Botswana. This is because the traditional approach of male dominant culture and gender inequalities. Only 16% women are provided opportunities to participate as corporate leaders, whereas decisions are mostly taken in the hands of male staff. Though men are considered as great leaders, but still the economy of Botswana is showing -8% declines, which reflects poor firm’s financial performance
Gyermekvállalási tervek a pandémia idején Magyarországon
Authors: Kapdebo Ágnes , Papházi Tibor , Tárkányi Ákos
Published: July 2022

A két éve tartó pandémia ellenére a 2021 harmadik negyedévében történt adatfelvétel alapján a magyar lakosság értékrendjében a család- és gyermekközpontúság változatlanul meghatározó jelentőségű. A gyermekvállalás szoros kapcsolatot mutat a házassággal. A gyermekek tervezésének szándéka az érettségizettek és a diplomások körében erőteljesebb, mint az alacsonyabb végzettségűek között. A gyermekvállalás előtt állók körében a tervezett gyermekszám alapvetően stabil maradt, nem esett vissza a koronavírus hatására, a két gyermeket tervezők vannak a legnagyobb arányban. A legnépszerűbb a kétgyermekes család eszménye, ezt követi a háromgyermekes családmodell. A huszonéves fiatalok terveiben is két vagy három gyermek szerepel. A gyermekvállaláshoz szükséges feltételek közül a megfelelő lakáskörülmények, az anyagi biztonság és a biztos munkahely továbbra is kiemelkedő jelentőséggel bír, továbbá szerepet játszik a megfelelő társ és a családi támogatás is. A mélyebben megélt vallásosság elősegíti a gyermekvállalást. A kormányzati családtámogatási intézkedésekre leginkább az egy- és háromgyermekesek alapoznak terveik során. [A tanulmány másodközlés, eredeti megjelenése: Kapocs folyóirat 2022/1. kiadó: Kopp Mária Intézet a Népesedésért és a Családokért (KINCS)]
EFEK FRICTION STIR SPOT WELDING DALAM PEMASANGAN RIVET TERHADAP SIFAT MEKANIK MATERIAL ALMUNIUM SERI 2024
Authors: Admin Admin , Ardianto Haris
Published: July 2022

Melakukan pemilihan dan perlakuan pada suatu material merupakan hal yang sangat penting. Khususnya dibidang industri kedirgantaraan, mariner, alat transportasi dan industri manufaktur merupakan tujuan dalam pengembangan material tersebut. Bahan alumunium merupakan logam yang ringan dan memiliki ketahanan korosi yang baik, hantaran listrik yang baik dan sifat-sifat lainnya. Paduan ini memiliki keunggulan, yaitu pada perbandingan kekuatan yang dihasilkan dengan berat struktur yang lebih tinggi daripada baja, ketahanan lelah yang baik, keuletan serta sifat mampu bentuk yang tinggi. Dibidang manufaktur saat ini telah dikembangkan teknologi penyambungan yang mana hal tersebut berawal dari cara konvensional seperti riveting (paku keling), sambungan susut tekan, hingga kini dilakukannya proses pengelasan. Friction stir spot welding sebuah metode untuk menggabungkan lembaran atau pelat dengan pekerjaan termomekanis yang awalnya dikembangkan untuk industri otomotif. Keunggulan dari metode (FSSW) tidak menggunakan busur listrik untuk menyambungkan potongan logam, tidak menghasilkan asap atau radiasi berbahaya, juga tidak memerlukan personel yang berkualifikasi tinggi. Selain itu, tidak meninggalkan tegangan sisa yang kecil dan hasil permukaan yang baik. Material yang digunakan dalam penelitian ini adalah paduan aluminium 2024 dengan dimensi 200 x 20 x 2 mm. Proses pengelasan dilakukan dengan putaran mesin 2500 rpm. Parameter lainnya yaitu dilakukan proses drilling pada plat almunium kemudian penggunaan tool untuk FSSW dengan tool ukuran diameter 2.5 mm. Kemudian pengamatan yang dilakukan meliputi pengukuran temperatur, uji geser,kekerasan, makro dan mikro struktur. Hasil pengujian didapatkan bahwa metode FSSW dapat mengubah ukuran butiran pada daerah HAZ, tingkat kekersan meningkat dan kekuatan geser juga terjadi peningkatan. Penggunaan metode FSSW memberikan hasilpada peningkatan kekerasan pada daerah las. Sebagai kesimpulannya, perlakuan FSSW pada almunium 2024 memberikan hasil yang maksimal pada setiap pengujian dibandingkan dengan proses.
ANALISIS KARAKTERISTIK AERODINAMIKA PADA PESAWAT UAV FIXED WING TENAGA SURYA DENGAN AIRFOIL TIPE MH32
Authors: Admin Admin , Marausna Gaguk , Jayadi Farid
Published: July 2022

Unmanned Aerial Vehicle (UAV) adalah pesawat terbang tanpa awak yang dikendalikan dari jarak jauh oleh pilot atau mampu mengendalikan dirinya sendiri. UAV diharapkan mampu menghasilkan performa aerodinamika sayap yang baik, yaitu membuat gaya angkat yang besar dan mengurangi gaya hambat. Ketika udara melewati sebuah pesawat terbang maka pada bagian ujung wing akan menghasilkan vortex. Vortex dapat membuat kerugian pada pesawat terbang yaitu membuat performa aerodinamika sayap menjadi berkurang dan menambah gaya hambat. Untuk menambah performa pada pesawat terbang digunakan winglet. Tujuan penelitian ini adalah untuk mengetahui kekuatan wingtips vortex pada UAV fixed wing tenaga surya dengan variasi sweep angle 30º, 45º, 60º dan variasi cant angle 15º, 30º, 45º, 60º, 75º, 90º. Analisis dalam penelitian ini dilakukan dengan menggunakan software XFLR5. Sweep angle dan cant angle disimulasikan dengan sudut serang -10º sampai 20º. Hasil penelitian menunjukkan bahwa winglet yang menggunakan cant angle 15º dan sweep angle 60º menghasilkan CL/CD sebesar 161,816 dan coefficient lift 0,2563 yang tidak terlalu rendah serta menghasilkan coefficient drag sekitar 0,00163 yang tidak terlalu besar.
ANALISIS LINTASAN ROKET BALISTIK DENGAN MENGGUNAKAN SIMULASI VARIASI SUDUT AWAL PELUNCURAN
Authors: Admin Admin , Sofyan Edy , Eko Prasetiyo Erwan
Published: July 2022

Indonesia merupakan negara yang luas, dengan kondisi geografis diantara dua benua yaitu Benua Asia dan Benua Australia. Kondisi ini membuat Indonesia memiliki potensi yang besar untuk mendapatkan serangan dalam bentuk pertahanan dan keamanan dari dalam maupun luar negeri. Oleh karena itu, Indonesia harus mempersiapkan kemandirian berteknologi sejak dini. Pengembangan roket merupakan salah satu kemandirian teknologi dalam pertahanan dan keamanan. Roket balistik dapat dibuat dengan jarak dan waktu tempuh yang diinginkan. Roket harus melalui beberapa tahapan penting yang harus dilakukan sebelum Roket dapat diluncurkan dan diproduksi massal. Roket yang diluncurkan tanpa mengetahui sudut yang tepat akan mengakibatkan roket bergerak dengan tidak sesuai dengan jarak jangkau yang diinginkan. Oleh karena itu, penentuan sudut awal peluncuran roket diperlukan agar dapat mengetahui sudut yang tepat untuk peluncuran roket. Sudut awal peluncuran merepresentasikan sudut operasional roket yang digunakan sebagai missile permukaan ke udara. Sudut awal peluncuran divariasikan dimulai 20̊ hingga 60̊ dengan menggunakan Matlab dan Matlab Simulink, variasi sudut awal peluncuran bertujuan untuk mengetahui sudut yang ideal untuk digunakan pada saat peluncuran roket. pergerakan horizontal range pada sudut 20̊ hingga 55̊ mengalami pergerakan yang semakin jauh, akan tetapi saat sudut awal peluncuran sebesar 60̊ pergerakan roket balistik 122 mm semakin kecil. Roket Balistik dengan sudut awal peluncuran sebesar 50̊ merupakan sudut yang tepat untuk digunakan dengan horizontal range sejauh 27.466 meter.
Modelling and Simulation of DC-DC Boost Converter and Inverter for PV System
Authors: Mohamed Aqeel Shafeek  , Hariprasad Yogaraju  , Jasspeed Singh  , Lingeswarran Thanaventhran
Published: July 2022

Research in renewable energy sources has seen an incremental trend for its various advantages over conventional energy sources. Photovoltaic generation system acquires the maximum market share in the energy systems employing the renewable energies. The low efficiency in terms of the output voltage is a prime disadvantage of the photovoltaic generation system. On the other hand, the industries in the majority make use of equipment requiring high voltage input. Considering the requirement of high voltage input for industrial application and the low-voltage constraint of the Photovoltaic (PV) generation system, this paper proposes a modelling and simulation of DC-DC boost converter and three-phase inverter in MATLAB SIMULINK. The circuit is designed based on the traditional standard circuits of the converter and inverter. The investigation resulted the development of an accurate model but also compact compared to other designs. Additionally, this will allow the power electronics circuit simulated beforehand in any experiment-based work.
A Secure and Efficient Data Distribution System in a Multi-Cloud Environment
Authors: Abed Hazim Noman , Ghassan Sabeeh Mahmood  , Noor Hasan Hassoon
Published: July 2022

Cloud computing is a model for providing online services. These services can be accessed on a pay-per-use basis from anywhere at any time. However, data security in the cloud has become a very big problem. A major concern about data security is the cloud service provider (CSP), which has access to data, which in turn increases user concerns and reduces cloud capacity in many areas such as medical record databases and financial data. The problem of data security mainly affects the use of cloud computing by users and organizations. The current research on data protection has been done in multi-cloud computing so that CSPs do not have direct access to the data. In this paper, a secure and efficient cloud data system is proposed in order to ensure data confidentiality and integrity by encrypting the image using DNA encoding combined with the logistical map and spatial map. The encrypted image is then divided into chunks before being stored in the multi-cloud to ensure the confidentiality of the data. The hash value is calculated using the Message Digest (MD5) algorithm to verify the integrity of the data. The proposed system also supports efficient updating of outsourced data. For the security analysis, many experiments were conducted to ensure the confidentiality and privacy of data in a multi-cloud environment, where files of different sizes were used, and the analysis showed that the proposed system is more secure. On the other hand, conducted several tests to analyse performance with dynamic data support and latency, where the analysis showed that the results are at the required level. Finally, through a comprehensive analysis of security and performance, the proposed system is proven to be more secure in a multi-cloud environment and that the system is highly efficient
Cloth Pattern Recognition Using Machine Learning and Neural Network
Authors: R Sreemathy , Turuk M.P , Khurana Soumya
Published: July 2022

Visually impaired people face a lot of challenges while choosing clothes with complex patterns and colors. Rotation, scaling and variation in the light makes the cloth recognition problem a challenging task. An automatic cloth pattern recognition technique to classify the patterns into four classes namely plaid, striped, irregular and Patternless is developed using image processing, machine learning and deep learning concepts in this work. MATLAB is used as the simulation tool of choice. Color classification is done with the help of Hue Saturation Intensity (HSI) color model. To recognize clothing patterns, global and local features are extracted. Features extracted include Radon signatures and Grey Level Co-occurrence matrix. Pattern recognition has been done with the help of machine algorithms such as KNN, SVM, and deep learning networks such as AlexNet, GoogleNet, VGG-16 and VGG-19. To evaluate the effectiveness of the algorithms, CCNY Clothing Pattern data-set has been used. The maximum accuracy of 97.9% was obtained using the VGG-19 deep neural network.
Physicochemical Quality of Borehole Water Stored in Household Plastic Containers
Authors: Onuorah Samuel
Published: July 2022

Good quality water is indispensable to human and animal existence. Storage facilities are commonly used to ensure sufficient water, predominantly where piped water supply operates occasionally. Therefore, water samples from five boreholes were analyzed before and during storage for three weeks in household plastic containers using standard physicochemical methods. There was an increase in pH, temperature, electrical conductivity, total dissolved solids, total solids, turbidity, nitrates, phosphates, sulfates, alkalinity, copper, and lead and a decrease in dissolved oxygen, chlorides, total hardness, total acidity, zinc, cadmium, iron, and chromium. In contrast, the total suspended solids remained unchanged during storage. The physicochemical parameters were within the World Health Organization Standard for drinking water quality except for the pH, total acidity, cadmium, and lead levels during storage. This study showed that water storage for three weeks in plastic household containers adversely affected the physicochemical quality of the water. Therefore, water must not be stored for an extended period in plastic containers to avoid deterioration in its quality.
Impact of Palm Kernel Oil Mill Effluent on the Soil's Physicochemical Characteristics and Growth of Tomato Plant
Authors: Onuorah Samuel , Adaeze Nwanyanwu  , Patrice Okoye
Published: July 2022

Effluent is wastewater flowing out of a sewer which constitutes environmental problems ranging from long-term ecological damage to increased water-borne diseases. In Nigeria, palm kernel oil is extracted from oil palm fruits in oil mills and the effluent is discharged without treatment to the soil in the vicinity of such mills. The effluent-receiving soil has been observed not to support the growth of vegetation. Hence in this work, the impact of palm kernel oil mill effluent on the soil physicochemical characteristics and growth of tomato plant was determined and compared with the effluent discharge limit established by the Federal Environmental Protection Agency. Samples of untreated and treated effluent, untreated and treated effluent-polluted soil and unpolluted soil were used for the study. The physicochemical analysis was carried out using standard physicochemical methods. The physicochemical values of the untreated effluent, except the pH, which was acidic, were higher than those of the treated effluent. Most of the physicochemical values of the untreated effluent-polluted soil were higher than those of the treated effluent-polluted soil and the unpolluted soil. The tomato plant grown in the unpolluted soil had better growth characteristics and yielded more fruits than those grown in the treated effluent-polluted soil. In addition, the tomato plant grown in the untreated effluent-polluted soil showed the lowest growth characteristics and yielded no fruits due to its elevated level of heavy metals and total petroleum hydrocarbons. The study showed that the untreated palm kernel oil mill effluent had a negative impact on the soil's physicochemical and growth characteristics of the tomato plant. Therefore, the effluent must be adequately treated to remove hazardous substances before its discharge into the terrestrial environment.
Investigation of Prescription Data to Define the Disease Demography of Bangladesh
Authors: Islam Md. Asiful , Chowdhury Christe Antora
Published: July 2022

The prosperity of a country is highly dependent on its public health. Bangladesh is very keen to achieve a sustainable public health sector as a developing country. Bangladesh reached the goal of MDG (Millennium Development Goals) and pursued the goal of SDG (Sustainable Development Goals). Without sound public health, it is impossible to achieve SDG. So, Bangladesh is investing a good amount of money in the public health sector. As a part of this grand vision, this research has been conducted on the disease demography of Bangladesh. An interested pharmaceutical company collected prescription data from all administrative districts of Bangladesh, and weather and population data have been collected as a part of this work. An in-depth analysis of these data has been performed to discover insights into Bangladesh’s disease demography. Finally, a set of recommendations has been presented to assist the public health sector of Bangladesh.
Investigation into Smart Healthcare Monitoring System in an IoT Environment
Authors: Salini Pradhan  , Ahmad Anwar Zainuddin  , Rohilah Sahak  , Mohamad Yunos Muhammad Farhan Affendi
Published: July 2022

Continuous monitoring of progress of a clinical trial is known as health monitoring. It is to assure compliance with policy, best clinical practice, regulatory norms, and standard operating procedures. Monitoring is vital in several health settings. This creates an environment where physician and patient can engage. The doctor may also be up to date with the current patient’s health status. Sensor initialization is this system's first stage. This project includes of many sensor kinds such as blood pressure sensor, temperature sensor, pulse rate sensor. The sensor is then connected to the Raspberry Pi 3 Model B+ which transmits a signal over the internet allowing the doctor to interact with patient data. All sensor data is stored in a cloud database. If the sensor value exceeds the threshold sensor value and the alert email is sent to the doctor and caretaker, then a precautionary notification is sent to the patient. Doctor and patient can interact through a user application where the doctor can even write the patient's prescription. This approach can monitor several patients in severe conditions and save time. This project provides low-cost monitoring from one's home. This is a secure and reliable project that helps patients worldwide.
Druck aus den Parlamenten – Die AfD und die Soziale Arbeit
Authors: Weßling Christian
Published: July 2022

Soziale Träger werden von den Parlamentsfraktionen der AfD gerne in kleinen und großen Anfragen, parlamentarischen Fragestunden oder Untersuchungsausschüssen problematisiert. Gegenstand der Vorwürfe sind vermeintliche Verstöße gegen die Neutralitätspflichten von Zuwendungsempfängern, finanzielle Unregelmäßigkeiten, Veruntreuung und persönliche Bereicherung. Das legitime Anliegen, tatsächliche Verfehlungen parlamentarisch aufzuarbeiten, wird dabei in diffamatorischer Absicht zugespitzt, um die Legitimität der Wohlfahrtsverbände und ihrer Finanzierung grundsätzlich in Frage zu stellen.
»Einfach dieses Dazugehören…«
Authors: Schührer Anne-Katrin
Published: July 2022

Menschen mit Migrationshintergrund sind im freiwilligen Engagement unterrepräsentiert. Die Gründe sind auf der individuellen, der institutionellen und der gesamtgesellschaftlichen Ebene zu verorten. Der Artikel geht der Fragestellung nach, inwieweit ein freiwilliges Engagement von Menschen mit Zuwanderungsgeschichte dazu beitragen kann, sich als Teil der Gesellschaft zu erleben und zumindest auf lokaler Ebene partizipieren zu können.
Jugendparlamente als Möglichkeit der Verwirklichung des Rechts von Kindern und Jugendlichen auf Partizipation
Authors: Linßer Janine , Speckenwirth Kira
Published: July 2022

Am 13. Mai 2022 fand die Landtagswahl in Nordrhein-Westfalen statt. Die Wahlbeteiligung lag bei 55,5% und war damit so gering wie noch nie. Vor allem unter den jungen Menschen ist die Wahlbeteiligung gering. Dies zeigt umso mehr, wie wichtig die Förderung politischer Beteiligung von jungen Menschen ist.
Jugendpartizipation in ländlichen Räumen
Authors: Just Dennis , Kallenbach Tilman
Published: July 2022

Etwas mehr als die Hälfte der bundesdeutschen Bevölkerung lebt in ländlichen Räumen und trotzdem reflektieren nicht zuletzt die wissenschaftlichen Debatten um die Beteiligung und Partizipation Jugendlicher vor allem urbane Räume. Dieser Beitrag diskutiert deshalb Perspektiven, Herausforderungen und Konzepte für die Jugendarbeit in ländlichen Räumen und stellt Ergebnisse eigener Erhebungen vor.
Bildungsberatung in Arbeitsagentur und Jobcenter
Authors: Nixdorf Christian Philipp , Swiderski Jana
Published: July 2022

In Teil 1 wurden die Lebensbegleitende Berufsberatung in der Agentur für Arbeit und die (Bildungs-)Beratung im Jobcenter beschrieben. Wie man sich die Lebensbegleitende Berufsberatung in der Agentur für Arbeit und die (Berufs-)Beratung im Jobcenter konkret vorzustellen hat und welche Implikationen für die Kooperation und Zukunft der Bildungsberatung daraus erwachsen, wird nachfolgend beschrieben.
Maßnahmen der Berufsförderung wirkungsorientiert steuern
Authors: Textor Franz , Witzmann Markus
Published: July 2022

In den letzten Jahren rückt die Frage nach den Wirkungen sozialer Angebote verstärkt in den Fokus. Diese Entwicklung betrifft auch den Bereich der arbeitsmarktnahen Dienstleistungen. Häufig fehlen Bildungsträgern die Ressourcen, um aufwendige Wirkungsanalysen durchzuführen. Ziel dieses Beitrags ist, alternative Möglichkeiten aufzuzeigen. Ausgehend von einem Wissenstransfer, bilden die Ansätze der Wirkungsmodellierung und des Controllings die Basis für die Implementierung eines wirkungsorientierten Steuerungsverfahrens.
La participation des régies financières dans la consolidation des institutions publiques dans la Province du Haut-Katanga
Authors: Idriss Sangwa Ilonda
Published: July 2022

Dans sa volonté de promouvoir le développement harmonieux du pays en prenant en compte des particularités ou des sensibilités locales, le constituant congolais a entendu rapprocher les dirigeants des dirigés. L’option de la décentralisation fut ainsi levée par referendum et consacrée dans la Constitution du 18 février 2006. Le processus de décentralisation ne connaitra un début d’effectivité qu’à partir de 2015. La viabilité des provinces nouvellement créées, le Haut-Katanga comprise, demeure la principale préoccupation. Pour qu’elle se consolide, la province du Haut-Katanga a indubitablement besoin de moyens financiers importants. C’est à ce niveau qu’interviennent les régies financières afin de mobiliser ces recettes. Le mérite de cet article est d’avoir (dé)montré un rapport consubstantiel entre les régies financières et les institutions publiques dans le Haut-Katanga.
Contributing Factors for Calcium Changes During Hospitalization in COVID-19: A Longitudinal Study
Authors: Hashemipour Sima , Kiani Somaieh , Shahsavari Pouria , Badri Milad , Ghobadi Arefeh , Hadizadeh Khairkhahan Seyyed Mohammad Reza , Ranjbaran Mehdi , Gheraati Maryam
Published: July 2022

Background: Hypocalcemia is highly prevalent in Coronavirus disease 2019 (COVID-19). There is limited evidence about the course and roles of different parameters in the occurrence of new or worsening hypocalcemia. Objectives: This prospective longitudinal study was conducted on hospitalized COVID-19 patients in Qazvin, Iran, in 2021. Methods: Serum levels of calcium, albumin, parathormone (PTH), 25(OH)D (vitamin D), magnesium, and phosphate were assessed on the first day (time one), as well as fourth to sixth days (time two) of hospitalization. Paired t-test, McNemar’s test, and multivariate logistic regression test were used to compare data at two times and evaluating the independent roles of different variables in the occurrence or worsening of hypocalcemia. Results: Out of a total of 123 participants, 102 patients completed the study. The mean serum calcium level significantly decreased from 8.32 ± 0.52 mg/dL to 8.02 ± 0.55 mg/dL at time two compared to time one (P < 0.001). Also, we witnessed new or worsening hypocalcemia at time two in 44 (55%) patients with normal serum calcium or mild hypocalcemia at time one (P < 0.001). The PTH level decreased from 42.17 ± 27.20 pg/mL to 31.28 ± 23.42 pg/mL (P < 0.001). The decrease in albumin and PTH levels was an independent significant factor in the occurrence or worsening of hypocalcemia at time two (OR = 1.27; 95% CI: 1.10 - 1.46; P = 0.001 for each 1 g/L decrement in albumin and OR = 1.29; 95% CI: 1.03 - 1.62; P = 0.026 for each 10 pg/mL decrement in PTH). Vitamin D deficiency or changes during hospitalization did not have a significant role in new or worsening hypocalcemia. Conclusions: Decreased PTH secretion and hypoalbuminemia have significant roles in the occurrence of new or worsening hypocalcemia during hospitalization due to COVID-19.
Novel electrospun implants of Sunitinib can depress ex-vivo ocular neovascularization
Authors: Mishra Deepakkumar , Sigurðsson Hákon Hrafn , Serro Ana Paula , Kalesnykas Giedrius , Donnelly Ryan F , Thakur Raghu Raj Singh
Published: July 2022

Choroidal neovascularization (CNV) is one of the hallmark symptoms of Wet Age-related Macular Degeneration (wAMD) and DiabeticRetinopathy(DR) which involves formation of neoangiogenic i.e. formation of new abnormal blood vessels emerging from the choroidal blood vessels and protruding through the retinal layer. The current management of wAMD involves intravitreal injections of anti-VEGF such as ranibizumab and aflibercept. We hypothesized the delivery of small molecule anti-angiogenesis agents such as the Sunitinib by episcleral route could be an effective and less challenging solution for the management of choroidal neovascularization. In this research, we have fabricated the sunitinib-loaded implants that are able of sustained the release of drug and possess improved ocular pharmacokinetics with a non-invasive administration. The novel episcleral implants were fabricated by electrospinning and were tested for different physiochemical and well as in-vitro pharmacokinetic properties. Further, these implants were tested for in-vitro biocompatibility and ex-vivo efficacy for the estimation of pharmacodynamic properties.
Modeling a software platform for beehive placement optimization
Authors: Milićević Vladimir , Zdravković Nemanja , Jović Jovana , Jagličić Dušan
Published: July 2022

In this paper, we discuss the multi-depot vehicle routing problem with regard to mobile beekeeping. Considering that beekeepers usually do not have their own land plots rarely rely on external transporters and often rely on external land plots, we present a fully functional platform to pair beekeepers, transporters, and land plot owners. Two algorithms for calculating optimal mobile beekeeping routes are developed in order to increase honey yield and minimize transport costs. We show that the first algorithm, based on the mathematical model, creates optimal routes in order to transport and distribute beehives by a distributor, while minimizing transport costs. In addition, we consider an option for the case when beekeepers themselves want to handle the transport and use a single external land plot. We show that, for this case, the application of the second algorithm creates a "good enough" solution. This iterative algorithm routes beekeepers to the closest land plot that can handle their beehives. Furthermore, we present a fully functional Web platform that applies these algorithms, enabling beekeepers, transporters and land owners to register and use the platform in Serbia.
Dynamic correlation between selected cereals traded in commodity exchange market in AP Vojvodina
Authors: Živkov Dejan , Stankov Biljana , Roganović Milijana , Momčilović Mirela
Published: July 2022

This paper investigates the level of pairwise dynamic correlations between prices of four agricultural commodities - corn, wheat soybean and barley that are traded in Novi Sad commodity exchange market. We use DCC-GARCH model, which is specially designed for this type or research. The results of the estimated dynamic conditional correlations show that low and positive correlation exist between all the pairs of the selected agricultural commodities, where the highest correlation is recorded between wheat and barley (24%), corn-barley pair follows (20%), while all other dynamic correlations are below 20%. The results indicate that price movements of the selected agricultural cereals are independent, which means that price discovery of one agricultural commodity does not provide information about the price of another agricultural commodity. Therefore, our results strongly suggest that traders in this market do not rely on the price co-movements between particular agricultural assets when they plan their selling or buying strategies, but to analyze fundamental macroeconomic factors.
Potential of organic production from the perspective of youth in Serbia
Authors: Bajagić Marija , Stošić Nemanja , Rašković Vera , Cvijanović Vojin , Đukić Vojin
Published: July 2022

Organic agriculture in Serbia is represented by only 0.4% of total agricultural production, which places Serbia at the back of list of European countries and countries in the region. Such production should be part of a rural development strategy. The aim of this work was to establish what would be the motivation of young people to start organic production, on which the perspective of this production depends. A survey conducted on 100 young people, students of the Unit for Agricultural and Business Studies and Tourism was used as a method of work. The results of the survey were summarized, presented as a percentage and described. The results of the survey indicate that 70% of respondents would like to engage in organic plant production, primarily due to the production of high quality food and environmental protection. However, the main shortcomings are insufficient information, insufficient financial support, difficult plant protection and insufficiently organized purchase of products. Most young people would choose to engage in fruit growing (53%).
Influence of liquidity and solvency on profitability of agroindustrial companies in the conditions of Covid-19
Authors: Čavlin Miroslav , Đokić Aleksandar , Miletić Vesna
Published: July 2022

Agroindustry is traditionally an unavoidable category in the analysis of any economy. The objectives of the research are to present a summary of the profit and financial positions of agro industrial companies in the period of COVID-19, and to analyze financial vitality in the context of liquidity of manufacture of food products and beverages, in the year 2020 and 2019, as well as its' average five-year parameters. The findings show that the liquidity indicators are below the desirable norms and overall liquidity assessment is unfavorable. Further analysis by subsectors has revealed differences in profit positions by subsectors, due to different effects of the crisis, so the findings can serve as an incentive to review decisions of all stakeholders, including economic creators' policy.
Cost-effectiveness analysis of organic honey production in Serbia
Authors: Nikolić Marija , Nedić Nebojša , Đorđević-Milošević Suzana
Published: July 2022

Economic justification of organic honey production is analyzed in the paper. The emphasis was placed on specific revenues and expenses that occur in organic honey production, and economic justification was examined by calculating indicators of economic efficiency, profitability and labour productivity. Based on the collected data, a calculation of production was made and a profitability threshold was established, which is achieved with 38 bee colonies, or with production volume of 570 kg of honey. Farms with more colonies have better indicators of production success. The expenses arising from the transition from conventional to organic production will be most quickly covered by farms with 200 bee colonies that generate enough income from organic honey production to operate positively in the third year of organizing such production.
Economic effects of apricot brandy production on a family farm
Authors: Dimitrijević Bojan , Bulatović Branka , Paunić Gordana
Published: July 2022

In this paper the focus of the authors was on the economic performance of apricot brandy production, realized on a family farm. The aim of this research was to determine the economic profitability of apricot brandy production in years 2017, 2018 and 2019. The sources of data used for the preparation of this paper were the internal documents/ records of the family farm and the interviews conducted with family members. Contemporary scientific and professional literature relevant to the subject research was used as a theoretical basis. Several research methods were used in the paper, namely: observation method, content analysis, interview, descriptive method, calculation method, grouping method, and comparative method. The analysis showed that the production of apricot brandy on the family farm in the observed years was economically viable.
A new model of rural development based on human capital and entrepreneurship
Authors: Radosavljević Darko , Josipović Sonja , Kokeza Gordana , Urošević Snežana
Published: July 2022

Rural development is one of the most important elements of the overall economic development. The level of entrepreneurship development, which is closely related to the available human capital of a certain area, has a particularly great impact on the speed and structure of the rural economic growth, along with outdoor amenities of rural areas. The paper provides an overview of foreign and domestic academic literature which deals with the issue of rural development and indicates the necessity and importance of achieving a stronger connection between rural outdoor amenities and the socio-economic development of rural areas. The paper also presents the results of the research aimed at the formulation of the relevant models of economic growth of rural areas in the 21st century. The aim of this paper is to point out the importance and possibility of implementing successful models of rural economic growth in Serbia.
GIS based methodology to analyse the public transport supply: Hungarian case studies
Authors: Bárta Martin
Published: July 2022

The paper aims to introduce a new way of comparing the efficiency of public transport operations based on publicly available data. It draws on four main sources, the Hungarian Central Statistical Office, public transport provider data, GTFS and OSM map layers. Methodologically, it combines the use of the GTFS format and corresponding static timetable component files, Thiessen polygons and empirical selection of relative indicators. As places of research, three comparable Hungarian cities have been selected by their population size; Pécs, Szeged and Miskolc. The comparison consists of 8 quantitative indicators that cover six major geographical aspects of transport operation (accessibility in terms of proximity, capacity, connectivity, density, frequency and velocity of vehicles). The analysis does not consider the mode of public transport, thus opening up the possibility of an independent comparison of efficiency regardless of various infrastructure characteristics. The results show that Miskolc and Pécs achieved the best values in four indicators. On the contrary, the city of Szeged, despite its diverse structure of transport modes, does not have an advantage in any aspect. The relatively loosely anchored methodology leaves room for an extension to include economic, environmental, and other specific factors.
Spatially differentiated impacts of Covid-19 on selected indicators of mortality in Slovakia in 2020
Authors: Michálek Anton
Published: July 2022

Slovakia is a country with a specific development of the Covid-19 pandemic. While it was among the countries with the lowest number of cases and lowest mortality during the first wave, during the second and third waves Slovakia gradually became one of the countries with the worst development of the pandemic. The aim of this contribution is to summarise the situation in Slovakia during the first year of the pandemic and investigate its influence on selected indicators of mortality. An attempt was also made at determining its influence on the lethality rate of Covid-19, changes in mortality, and excess deaths. The research considered regionally differentiated levels and identification of risk districts from the aspect of the abovementioned phenomena.
Impact of SARS-CoV-2 pandemic on menstrual cycle in young women
Authors: Todić Ivana , Mihajlović Slađana
Published: July 2022

Introduction: Normal and regular menstrual cycle is an important physiological function that indicates valuable information about women reproductive health, as well as the overall health. A lifestyle pattern could have influence on hormone activity and potential impact on menstrual regularity. Menstrual abnormalities are very common among adolescents. Aim: The aim of this study was to explore if the change of everyday habits, during pandemic, had an influence on hormone activity and menstrual regularity among young women. Material and methods: This study included 169 girls, from 15 to 25 years old, that were doing questionnaire based on menstruation characteristic and daily habits in period from December 2019 to October 2020. Average duration of menstrual cycle, before and during SARS-CoV-2 pandemic, was analyzed. Results: Average time of menarcha was age 12. During 2019, 17.2% of respondents had irregular menstrual cycle. Change of dietary habits, in the time of pandemic, was reported by 30% of girls and sleep habit by 35.5%. Additionally, 44% of them had less activities for school and 77% girls spent more time on their mobile phones. Conclusion: Analyzing data from menstrual history of examined girls, there was no statistically significant difference in menstrual cycle duration during pandemic, comparing it to previous period, despite the change of daily habits.
Spike index stability of bread wheat grown on halomorphic soil
Authors: Ljubičić Nataša , Popović Vera , Ivošević Bojana , Rajičić Vera , Simić Divna , Kostić Marko , Pajić Miloš
Published: July 2022

Bread wheat is one of the most important crops in the world. Wheat breeding has been based on science and has been constantly evolving due to breeding program improvements. Improving yield potential, resistance/tolerance to biotic and abiotic stresses, and baking quality are priorities for breeding this cereal. Soil and climatic conditions are one of the most important factors affecting the grain yield of wheat. During the two vegetation seasons, phenotypic variability and genotype by environment interaction (GEI) for spike index of eleven wheat genotypes were studied under specific growing conditions of halomorphic soil, solonetz type. The combined ANOVA showed that the phenotypic expression of spike index was significantly influenced by environmental variations, because the significant variance explained 48.8 % of the total variation, while genotype contributed with 7.8 % of the total variation of the experiment. The first source of variation IPCA1 explained 55.6 % of the GEI variation for the spike index of wheat. Genetics analysis of different wheat genotypes grown in different agro-ecological conditions contributes to their better utilization, as well as, selection for crosses in wheat breeding programs.
Theoretical model of solar incident angle for an optionally oriented fixed flat surface
Authors: Nešović Aleksandar
Published: July 2022

The apparent position of the Sun in relation to any surface is defined by the solar incident angle. The solar incident angle forms the vector of the position of the Sun and the vector of normal to the observed surface. The spatial position of the aforementioned vectors is determined by solar coordinates, which include: declination, latitude, hour angle, longitude, solar elevation angle, solar azimuth angle, azimuth angle of the observed surface, angle of inclination of the observed surface in the north-south direction and angle of inclination of the observed surface in the east-west direction. This article describes in detail the theoretical model for determining the solar incident angle for an arbitrarily placed fixed, flat surface using vector algebra and analytical geometry, as well as solar coordinates. The study model, which was developed by combining, modifying, and supplementing existing models, can be used to determine the thermal performance of solar devices such as: solar collectors, PV panels, and hybrid solar systems.
Wind-driven fire spread to a structure from fences and mulch
Authors: Butler Kathryn M , Johnsson Erik L , Maranghides Alexander , Nazare Shonali , Fernandez Marco , Zarzecki Mariusz , Tang Wei , Auth Eric , McIntyre Rachel , Pryor Michael , Saar William , McLaughlin Colin
Published: July 2022

A series of field experiments was conducted to examine the effects on fire spread toward a structure for combustible fences and mulch under conditions that may be encountered in a wildland-urban interface (WUI) fire. The fire behavior of a variety of materials, designs, and configurations were studied under various wind conditions. The 187 experiments were split into five categories: mulch only, fence only, fence plus mulch, parallel fences, and long range firebrand experiments. Fence materials included western redcedar, California redwood, pine, vinyl, and wood-plastic composites, and fence styles included privacy, lattice, and good neighbor (board on board). The tested mulch types were shredded hardwood, mini pine bark nuggets, pine straw, rubber, and artificial turf. A wind machine provided a mean wind speed between 6 m/s and 14 m/s (13 mi/h to 31 mi/h). The fence and/or mulch bed was ignited by a propane burner on the ground at the end farthest from the structure. A small structure was located between 0 m and 1.83 m (0 ft to 6 ft) downwind of the fence or mulch bed as a target for flames and firebrands. A target mulch bed at the base of the structure tested the ability of firebrands produced by the burning fence and mulch bed to ignite spot fires that threatened the structure.
Enseñar y aprender a investigar en la virtualidad: trazas del consumo en el aula de "Metodología de la investigación"
Authors: De Sena Angélica , Dettano Andrea
Published: July 2022

En las últimas décadas, la enseñanza de la metodología de la investigación social ha sido objeto de análisis y reflexión en el ámbito universitario. Dicha reflexión se ha intensificado ante la situación de pandemia provocada por la COVID-19 y el paso a la virtualidad de la educación en todos sus niveles. La práctica de la investigación y su proceso de enseñanza aprendizaje implican preguntarnos por cómo las teorías, los instrumentos de investigación e incluso nuestros esquemas de percepción, observación e interpretación del mundo, se encuentran atravesados por los procesos y planteos de una época. En este sentido y en el marco de unos modos de estructuración social basados en el disfrute inmediato a través del consumo (Scribano, 2004), en este artículo propone- mos revisar cómo este mismo planteamiento afecta los procesos de enseñanza y aprendizaje del área de ”Metodología de la investigación social”. Como docentes de dicha asignatura en cursos de grado y posgrado, y a partir de experiencias propias de cursos dictados virtualmente en 2020, nos preguntamos si el consumo en tanto modo de relación social entró en las aulas, cuál fue su relación con el proceso de enseñanza-aprendizaje, cómo afectó a esta relación la virtualidad y cuánto se alejan o acercan las interacciones entre docentes y estudiantes a las del propio mercado. El artículo concluye subrayando los modos en que la experiencia académica se encuentra imbuida por unas sensibilidades ligadas al disfrute inmediato a través del consumo y cómo ello podría ser un obstáculo en el proceso de enseñanza-aprendizaje de la metodología.