bluuebunny/crossref_metadata_2025 huggingface dataset:
A facile route to plastic inorganic electrolytes for all-solid state batteries based on molecular design
Authors: You Insang , Singh Baltej , Cui Mengyang , Goward Gillian , Qian Lanting , Arthur Zachary , King Graham , Nazar Linda
Published: November 2024

Solid-state lithium batteries are on the threshold of commercialization as an alternative to liquid electrolyte batteries. Glassy or amorphous solid electrolytes could bring crucial benefits, but their lack of periodicity impedes structure-derived material design. Here, we report an approach for glassy electrolyte design based on well-defined lithium metal oxychloride linear oligomers. By packing these oligomers formed by oxygen-bridged chloroaluminates, a glassy solid model is constructed. Li ions in mixed-anion coordination with distorted polyhedra favor good lithium conductivity (1.3 mS.cm-1 at 30 °C). The frustrated Li-ion geometry and non-crystallinity promote conformational dynamics of the oligomer backbone that generates mechanical plasticity. Ab-initio molecular dynamics simulations depict the conformational motion that resembles that of organic molecules. Our all-solid-state battery based on this solid electrolyte shows exceptional long term electrochemical stability with a high-nickel NCM cathode. This work shows the impact of targeted structure models for rational design of glassy plastic electrolytes.
Collective asymmetric synthesis of the Strychnos alkaloids via thiophene S,S-dioxide cycloaddition cascades
Authors: Park Kun Ho (Kenny) , Park Jisook , Frank Nils , Zhang Hanwen , Duarte Fernanda , Anderson Edward
Published: November 2024

The Strychnos alkaloids have long been regarded as landmark targets for chemical synthesis due to their captivating architectures and notorious biological properties. The family has fascinated synthetic and medicinal chemists for almost 100 years, since the decades-long debate over the structure of the 'flagship' member strychnine, and its first total synthesis by Woodward. Featuring a dense array of carbo- and heterocyclic rings, and numerous stereochemical challenges, these molecules have inspired many synthetic strategies. In spite of this rich history, the design of approaches that can access multiple family members, in an asymmetric, concise, and atom-economical fashion, remains a significant challenge. Here we show that thiophene S,S-dioxides (TDOs) offer a modular and highly concise entry to the Strychnos natural products. We show how the rapid assembly of a tryptamine-tethered TDO enables the synthesis of family member akuammicine in just three steps from tryptamine, with minimal waste generation. We further demonstrate exceptional levels of stereocontrol in unprecedented asymmetric cycloadditions of chiral thiophene S,S-dioxides; these afford tricyclic indolines that are of interest for medicinal chemistry applications, and also enable highly concise, stereoselective and scalable syntheses of the Strychnos alkaloids by either intra- or intermolecular asymmetric cycloadditions. Our results highlight the potential of TDOs as important building blocks in asymmetric cycloaddition chemistry for the streamlined synthesis of polycyclic organic frameworks; in the case of the Strychnos alkaloids, this means that both natural products and analogues that have previously been inaccessible can now be prepared in a handful of transformations.
Pristine and Cu-decorated ψ-graphene-based materials for CO2 activation: A DFT(D)+ U Study
Authors: Kumar Kamal , de Leeuw Nora , Adam Jost , Mishra Abhishek Kumar
Published: November 2024

Capturing and repurposing anthropogenic carbon dioxide (CO2) is the traditional way to deal with climate change and lack of fossil fuel. CO2 adsorption (reduction) is the first step in this process. We have employed density functional theory-based calculations to investigate CO2 activation over the pristine and Cu-decorated carbon-based two-dimensional ψ-graphene material and its hydrogenated forms, i.e., ψ-graphone (half hydrogenated) and ψ-graphane (fully hydrogenated). ψ-graphene is a metallic allotrope of graphene containing 5-6-7 membered carbon rings. Our study found exothermic binding of CO2 with all three materials (for both pristine and Cu-decorated materials), indicating spontaneous physisorption. The presence of single atoms of the transition metal plays a significant role in increasing the activity of materials towards CO2 activation. We observed that the adsorption energy increases about three times after decorating a ψ-graphene sheet with Cu atoms. In contrast, no significant variation is observed on ψ-graphone or ψ-graphane materials. Our Bader charge analysis confirms the charge transfer from 2d nano-sheets to the molecule, where the values of calculated adsorption energies and the density of states suggest that the interaction between CO2 and these three materials can be categorized as weak physisorption., while Cu decoration enhances the CO2 adsorption.
Koncept vrtuľového propulzora pre široký rozsah rýchlosti letu
Authors:   University of Žilina, Ivan Jakub
Published: November 2024

This thesis is focused on creation of propeller concept for wide range of flight speed. The part, which is discussed in the thesis is creation of design for blade motion mechanization, that can reach variable diameters. Apart of creation of this design, the thesis offers historic overview of propeller development throughout the years. Mechanization is designed in 3D environment. The software used for design is Autodesk Inventor. Design isn´t calculated of given engine. The outcome of this thesis is to give perspective for constructers, whoever would want to construct this idea in reality, not 3D environment only. The design in 3D environment is working as it should and when motion is launched, blades are really changing the diameter. In the design study, radius difference between extended and reduced blades is more than 300 millimeters. Desing complies with the task.
Využitie poznatkov z leteckých navigačných súťaží v prostredí leteckého výcviku a vzdelávania
Authors:   University of Žilina, Liptajová Kristína Jana , Škultéty Filip
Published: November 2024

The research is devoted to the application of the knowledge and evaluation methods of the Air navigation race to flight training and education, with particular emphasis on the importance of pre-flight preparation and knowledge of visual cross-country navigation. The thesis aims to evaluate the navigation skills of the pilots (respondents), which was done using an objective method, i.e. measurements on a flight simulator. The respondents were divided according to flight experience and year of university studies into three groups. The results of the simulator measurements revealed an improvement in the navigation skills to many respondents. The thesis further includes a theoretical evaluation of the knowledge of students with an aeronautical background. The comparison of the result is based on the evaluation of paired questionnaires of the same scope and difficulty, with the difference that before the second questionnaire, the respondents received professional instruction on aeronautical navigation competitions and the principles of comparative navigation. Improvements in the students' theoretical knowledge results were observed for most respondents, two achieved the same result and there was no deterioration in either case.
Forecasting flight delays using machine learning
Authors:   University of Žilina, Soloviov Mykhailo , Badánik Benedikt
Published: November 2024

This article considers machine learning and its utilization in the domain of air transportation. The first part of this research aims to define machine learning, describe its historical development and helps delineate machine learning in a broader framework of other data analysis approaches such as artificial intelligence, deep learning and data science. In the second part, the research is meant to explain what machine learning is, tell more about the types of machine learning and how it is used in different scenarios in the aviation industry. This part of the thesis discusses certain areas and real examples of how machine learning is used by multiple companies (aircraft manufacturers) as well as examines the available conclusions of researches already undertaken in the area and determines their connection to the current one. Finally, the practical part of the thesis uses the collected real-time data about departures from two American airports, analyses it with the help of statistical Python-based tools, describes the developed machine-learning algorithm to predict delays, runs experiments on data and discusses results.
Letecké multispektrálne snímkovanie v poľnohospodárskom odvetví
Authors:   University of Žilina, Šmidt Marco , Veľký Patrik
Published: November 2024

This thesis focuses on the possibilities of applying airborne detection in many bands. Possibilities of multispectral detection in direction of use such as animal monitoring or scarecrow placement. In another direction of using thermal imaging for finding temperature anomalies or obtaining information from UAV sensors to improve economics in agriculture, light reflectance, electromagnetic spectrum, comparing satellites and UAVs in agriculture, and vegetation indices. The analysis of the studies was based on simulations and calculations followed by laboratory tests and external measurements. Using certain sensors operating in the corresponding regions of the frequency spectrum, the detection ranges of the drones were used to find the outputs derived from the calculated and simulated values, where a comparison of the studies followed.
Optimalizácia činnosti motora ROTAX 915is s alternatívnou riadiacou jednotkou
Authors:   University of Žilina, Voderadský Ján , Čerňan Jozef
Published: November 2024

The aim of this bachelor's thesis was to optimize the performance of the ROTAX 915 IS engine using an alternative electronic control unit. This work provides a detailed overview of the mechanisms and control systems used in other engines as well. The thesis focuses on a comprehensive understanding of both the basic and auxiliary systems of the engine and provides a proposal for optimizing the performance of the ROTAX 915 IS engine. The optimization of the engine was designed to improve efficiency, increase engine performance, and overall reliability in various modes. Following the design, a testing phase ensued where the unit was subjected to extensive practical tests on a real ROTAX 915 IS engine. These tests demonstrated significant improvements in the controllability and performance of the engine, confirming the effectiveness of the proposed settings. The results of this bachelor's thesis highlight the potential of alternative control units to enhance the performance and efficiency of engines. The findings can be used for further research that could expand the use of alternative control units in other aviation engines.
Windshear a jeho vplyv na leteckú dopravu
Authors:   University of Žilina, Voštinár Martin , Jarošová Miriam
Published: November 2024

Táto bakalárska práca sa zaoberá problematikou strihu vetra v civilnom letectve s cieľom poskytnúť komplexný pohľad na jeho vplyv na bezpečnosť a efektivitu leteckej dopravy. V práci sa analyzujú faktory ovplyvňujúce strih vetra, jeho vznik a dynamiku v rôznych letových podmienkach. Ďalej sa skúmajú metódy a nástroje používané na analýzu a predpoveď strihu vetra, ako aj ich presnosť a účinnosť. Práca sa tiež zameriava na praktické dôsledky strihu vetra pre letové operácie, vrátane jeho vplyvu na bezpečnosť letu. Na základe zhromaždených poznatkov sa diskutuje možné opatrenia a stratégie na zlepšenie riadenia strihu vetra v civilnom letectve. Výsledky tejto práce majú potenciál prispieť k lepšiemu porozumeniu a riadeniu tohto dôležitého meteorologického javu pre zabezpečenie bezpečnej a efektívnej leteckej dopravy.
Konštrukčná optimalizácia anténnych systémov UAS
Authors:   University of Žilina, Bernátová Barbora , Pecho Pavol
Published: November 2024

In this scientific article, we will focus on the impact of various material on radio signal attenuation. In the theoretical part, we will take a closer look at the history of unmanned aerial systems, basic types of unmanned aerial vehicles and their practical usage. Furthermore, this paper describes the advantages of using the UAV for calibration the ILS and describes how electromagnetic signal transmission works. In preparation for the practical part, the article explains frequency bands and antennas, used in UAV communication. In the experimental part, the properties of individual materials and their impact on the performance of the radio modules are analysed. The outcome of the work is an analysis of signal attenuation measurements at three different frequencies. The measurement results showed that the greatest signal attenuation in each case was caused by the carbon due its conductivity. In terms of strength and permeability, we found that the PET-G cover increased the signal strength compared to the measurements without the cover. This analysis may helps in the design of covers for antenna systems and the UAV construction that ILS will calibrate in the UHF frequency band.
Napájanie avioniky liedadiel s klasickou avionikou a glass kokpit
Authors:   University of Žilina, Chmelan Matúš , Novák Andrej
Published: November 2024

The bachelor thesis focuses on the analysis of avionic systems and their power sources on board aircraft. It describes the evolution of the basics of avionic systems that have gradually evolved into their modern form and describes the standards that B2 licensees must meet to be authorized to perform maintenance on these systems. It focuses primarily on defining power system requirements from a safety and regulatory perspective. An analysis of glass cockpit designs from five avionics system manufacturers will be performed, comparing the cost, power consumption and compatibility of these products. The set of standards and regulations that each avionics system must meet to be eligible for civil operation will also be summarised. Finally, this thesis raises awareness of the entire process of development, maintenance, certification and operation of avionics systems and their power supplies.
OIL PRICES-GROWTH NEXUS IN ALGERIA USING THE MEDAS MODEL
Authors: Cheloufi Omeyr , Djedi Larbi , Chermat Tahar , Saidi Mohammed
Published: November 2024

Objective: This Article aims to investigate the impact of oil price fluctuations on economic growth in Algeria using the Mixed Data Sampling (MIDAS) model during the period 1990-2022
 
Theoretical Framework: The theoretical aspect addressed the different time-frequency models by defining the Midas models and addressing the weighting functions used in estimating these models.
 
Method: Estimating the relationship between a high-frequency variable (oil price) and a low-frequency variable (economic growth rate GDP) using the MIDAS model using Almon's PDL Weighting Function.
 
Results and Discussion: The results of the study concluded economic growth in Algeria is directly affected by oil prices, The study also found that MIDAS models have a great predictive ability, allowing researchers to utilize all available information for high-frequency variables, instead of using annual average values that lose a lot of information. avoid converting low-frequency variables to match high-frequency variables, reducing econometric issues in model diagnostics.
 
Research Implications: Research Implications: It is suggested that rentier countries such as Algeria work to diversify their economy away from oil, and follow up the process of economic diversification and accelerate it during periods of high fuel prices by working to develop non-strategic sectors as agriculture, tourism and manufacturing industries.
 
Originality/Value: These results are expected to benefit policymakers in government, by urging them to invest in renewable energies as a crucial strategy for achieving sustainable development and a key factor in mitigating oil price shocks, particularly during recent recurring global crises. Future research directions include exploring existing gaps and promoting standardized studies.
ESTIMATION OF RELIABILITY PARAMETERS FOR POWER TRANSFORMERS
Authors: Al Balushi Nabila , Al Khairi Waleed , Rizwan S. M. , Taj S Z
Published: November 2024

Power transformers play an important role in the efficient delivery of power to consumers. Their failure leads to significantly higher losses and maintenance costs. Therefore, it is essential to have an optimal maintenance strategy in place for the transformers. However, to design an effective maintenance strategy, real failure data of the transformers need to be collected and studied to identify the failure patterns. To facilitate the analysis presented in this paper, five years of real failure data of a transformer system is collected from a power distribution company. The best-fit distribution for the failure times data of the system is found using AIC, BIC, and LKV values. Useful reliability parameters of the system are evaluated using the Maximum Likelihood Estimation and Rank Regression Method. Life data analysis is performed to estimate the reliable life, mean time to failure, and remaining lifetime of the entire system and its subsystems.
हिमाचल प्रदेश की जलवायु परिवर्तन पर राज्य कार्य योजना (एस.ए.पी.सी.सी ): एक अध्ययन
Authors: Singh Avantika
Published: November 2024

जलवायु परिवर्तन पर हिमाचल प्रदेश राज्य कार्य योजना (एस.ए.पी.सी.सी )भारत के सबसे संवेदनशील क्षेत्रों में से एक, पश्चिमी हिमालय में जलवायु अनुकूलता को बढ़ाने की दिशा में एक महत्वपूर्ण कदम है। इस शोध-आलेख में (एस.ए.पी.सी.सी ) संस्करण-I (2012) का अध्ययन किया गया है, जिसमें राज्य-स्तरीय जलवायु संबंधी कार्य योजना को राष्ट्रीय और अंतर्राष्ट्रीय ढाँचे के साथ संरेखित करने में हुई प्रगति पर प्रकाश डाला गया है। अध्ययन में प्रमुख क्षेत्रीय सुधारों, विकेंद्रीकृत शासन की ओर बदलाव और सामुदायिक भागीदारी, सामाजिक अनुकूलन और लैंगिक समावेशिता पर अधिक ध्यान केंद्रित करने पर जोर दिया गया है। इन प्रगतियों को संदर्भ में लाने के लिए सामाजिक, आर्थिक और पर्यावरणीय सिद्धांतों का उपयोग करते हुए, यह शोध-आलेख एस.ए.पी.सी.सी संस्करण-I की परिवर्तनकारी क्षमता को रेखांकित करता है। यह योजना जलवायु चुनौतियों के लिए एक दूरदर्शी, डेटा-संचालित दृष्टिकोण को अपनाती हैं, महत्वपूर्ण सामाजिक-आर्थिक आयामों को संबोधित करती है, संस्थागत ढाँचे में सुधार करती है और सतत विकास की नींव भी रखती हैं। इस आलेख में उन क्षेत्रों की भी पहचान की गई है जहाँ भविष्य में कार्य-योजना बनाने की संभावना है। इसमें स्थानीय कार्यान्वयन रणनीतियाँ, न्यायसंगत वित्तपोषण और लिंग संबन्धित संवेदनशील नीतियाँ आदि शामिल हैं।
राष्ट्रीय शिक्षा नीति 2020 द्वारा प्रस्तावित चार वर्षीय एकीकृत शिक्षक-शिक्षा कार्यक्रम : एक विश्लेषणात्मक अध्ययन
Authors: Surjan Praveen Kumar , Chandoria Virendra Kumar , Singh Pooja
Published: November 2024

भारत की राष्ट्रीय शिक्षा नीति 2020 शिक्षक-शिक्षा को देखने और समझने के संबंध में एक महत्वपूर्ण बदलाव को दर्शाती है, जिसमें उच्च-गुणवत्ता, बहु-विषयक और समग्र शिक्षण-प्रशिक्षण की आवश्यकता पर विशेष जोर दिया गया है। भारतीय शिक्षा व्यवस्था में इस सुधार की आधारशिला एकीकृत शिक्षक शिक्षा कार्यक्रम (आईटीईपी) की शुरूआत है। इसी क्रम में प्रस्तुत अध्ययन एकीकृत शिक्षक शिक्षा कार्यक्रम (आईटीईपी) का अन्वेषन करता है और इसके उद्देश्यों, विशेषताओं, संरचना और भारतीय शिक्षा प्रणाली पर संभावित प्रभाव का विश्लेषण करता है। आईटीईपी का उद्देश्य व्यापक विषय ज्ञान को शैक्षणिक कौशल के साथ एकीकृत करके शिक्षक की गुणवत्ता को बढ़ाना है, जिससे ऐसे शिक्षक तैयार हों जो समकालीन कक्षाओं की विविध आवश्यकताओं को पूरा करने के लिए अच्छी तरह से सुसज्जित हों। प्रस्तुत अध्ययन एकीकृत शिक्षक शिक्षा कार्यक्रम के मुख्य घटकों की रूपरेखा तैयार करता है, जिसमें एक मजबूत पाठ्यक्रम शामिल है जो सामग्री ज्ञान, वैकल्पिक पाठ्यक्रम और व्यावसायिक शिक्षा तत्वों को जोड़ता है। यह कार्यक्रम इंटर्नशिप और शिक्षण प्रैक्टिकम के माध्यम से व्यावहारिक प्रशिक्षण, कार्यक्रम का एक महत्वपूर्ण हिस्सा बनता है, जो सैद्धांतिक ज्ञान और कक्षा अनुप्रयोग के बीच की खाई को पाटता है। यह कार्यक्रम शिक्षण विधि एवं प्रविधियों के निरंतर सुधार और अनुकूलन को सुनिश्चित करने के लिए निरंतर मूल्यांकन और व्यावसायिक विकास पर जोर देता है। आईटीईपी का संभावित प्रभाव महत्वपूर्ण है, जो शिक्षण प्रभावशीलता में सुधार, समावेशी शिक्षा को बढ़ावा देने और नवीन शैक्षणिक दृष्टिकोणों को बढ़ावा देने ने के लिए प्रतिबद्ध दिखता है। शिक्षक शिक्षा को मानकीकृत करके और सामान्य गुणवत्ता मानक स्थापित करके, आईटीईपी का उद्देश्य असमानताओं को दूर करना और पूरे भारत में शिक्षा की समग्र गुणवत्ता को बढ़ाना है। यह कार्यक्रम शिक्षकों को शैक्षिक प्रौद्योगिकी का लाभ उठाने, अनुभवात्मक शिक्षण विधियों को अपनाने और समावेशी शिक्षा प्रथाओं को लागू करने के लिए तैयार करने पर भी ध्यान केंद्रित करता है, इस प्रकार राष्ट्रीय शिक्षा नीति 2020 के व्यापक लक्ष्यों के साथ संरेखित करता है। हालांकि, प्रस्तुत अध्ययन आईटीईपी के कार्यान्वयन में कई चुनौतियों की भी पहचान करता है जिनकी चर्चा अध्ययन में विस्तार से की गयी है।
AN ANALYTICAL STUDY ON THE IMPACT OF INDIAN COLLEGIUM SYSTEM IN JUDICIAL APPOINTMENTS WITH RESPECT TO OTHER DEMOCRACIES
Authors: S Gangadhara , Aithal K R
Published: November 2024

The etymology of the word ‘court’ denotes an enclosed place. Be it an enclosed yard as derived from the French term Cour or a garden of horticulture or orchard as descended from the Latin word ‘hortus’ or an ancient Greek word ‘Khortos’, which gives the significance of the roles and responsibilities assigned to or vested with the court systems in the world. The judicial assembly since its inception from the 12th Century designates the sovereign and his/her entourage to adjudicate disputes in an enclosed yard or a space. Judiciaries being the collective system of courts interpret and apply laws of the land. A Bench is formed by a Judge or body of judges whereas a Bar is structured by attorneys and barristers.The ‘venue’ is a place where the court sits. If the administration of justice could be handled well with utmost efficiency and effectiveness by the first known democratic administration in the world, the Water Court at Valencia, an ancient coastal city in the Western Spain. It would be an eyeopener for the judiciary to see how efficiently the irrigators of the Valencia plain could manage their water resources. The researchers try to highlight the very purpose for which the courts, even in the ancient times, were established and the way they functioned by the sovereign and his / her team of experts and competent administrators. The reflections clearly indicate the need for preserving the sanctity of free and fair principles without compromising impartial and unbiased decrees as pronounced or expected to be promulgated by the judges while upholding the democratic integrity and republican values.
THEFT DETECTION WITH CRIMINAL IDENTIFICATION USING MACHINE LEARNING
Authors: Gowsic K. , R Thilagavathi , K Vairam Sountharya , R Varsha
Published: November 2024

One of the main goals of video surveillance research and practical implementations is abnormal event detection. In order to improve public safety, the usage of surveillance cameras in public spaces—such as roadways, crosswalks, banks, retail centers, etc.—is expanding. One of the most important tasks in video surveillance is the detection of anomalous occurrences, such as criminal activity, traffic accidents, or crimes. In general, abnormal events are rare in comparison to normal activities. A useful anomaly detection system aims to pinpoint the anomaly's temporal range and instantly notify users when any behavior deviates from expected norms. Consequently, it is possible to think of anomaly identification as coarse-grained video knowledge that separates anomalies from regular patterns. Classification techniques can be used to further categories an anomaly into one of the specific activities once it has been recognized. An overview of anomaly detection is provided in this work, with a particular emphasis on applications in banking operations. Banking operations involve a wide range of daily, weekly, and monthly tasks and exchanges carried out by or impacting several parties, including staff members, clients, debtors, and outside organizations. Events could develop gradually, and early identification greatly reduces the likelihood of negative consequences and, in certain situations, even completely prevents them. Finding people at unfavorable periods is accomplished using anomaly detection based on time series. This research offers a machine learning based anomaly detection technique to discriminate between normal and abnormal occurrences. A comparison is made between the biometric identity of the captured face and the biometric identities of known criminals. If a match is found, we can identify and capture the culprit right away.
Mathematical, experimental and metaversal approaches to catenoid in geometry education
Authors:   The Korea Society Of Educational Studies In Mathematics, Seo MinHye , Lee Dongsun
Published: November 2024

The catenoid is formed between two coaxial circular rings and is mathematically classified as a minimal surface. The shape of the catenoid is very interesting and can be used for educational purposes as it explains curvatures and equilibrium shapes in nature. There are many interesting ways to create a catenoid with two ends, i.e. mathematical, experimental and metaversal approaches. This paper details the mathematical formulation and then creates and observes the catenoid for mathematics education. We also provide a tutorial video to create and observe the catenoid in the metaverse. This paper explores the mathematical properties of the catenoid for educators and highlights its use in experiments and virtual environments for educational purposes. Geometric surfaces have been studied extensively from a mathematical perspective. Mathematical concepts are physically invisible but difficult to understand because a mathematical surface has no volume and no mass. The catenoid is a minimal surface found in nature (e.g. soap films). This surface, classified as a minimal surface, can be understood through simple calculus and remains a subject of ongoing research in the field of differential geometry as one of the problems related to the classification of minimal surfaces. In mathematics education, the catenoid can motivate studies from basic calculus to differential equations, mathematical analysis and geometry. The aim of this paper is to mathematically explore the catenoid, which can be used in different ways depending on the objectives of the educator or the different levels of learning, and to inform educators about its application in experiments and computer simulations within virtual environments.
Perspectives on the Relationship between Proof and Justification in Korean Mathematics Education Research
Authors:   The Korea Society Of Educational Studies In Mathematics, Noh Jeong-Won
Published: November 2024

In this study, we investigated how the relationship between the terms “proof” and “justification,” which posed issues related to terminology selection during the revision of the Korean mathematics curriculum, has been perceived in the field of domestic mathematics education research. Conducting a systematic literature review, we analyzed the usage of these terms in relevant domestic research literature. The analysis revealed variations in defining proof and justification, highlighting diverse perspectives and trends regarding their relationship. The findings of this study contribute to a scholarly foundation for ongoing discussions on the closely intertwined relationship between these two terms.
A Study on the Outcomes and Improvement Strategies of Mathematics Education Policy Projects in 2023: Focusing on Teacher and Student Perceptions
Authors:   The Korea Society Of Educational Studies In Mathematics, Na GwiSoo , Sunwoo Jin , Choi Jisun , Lee SooJin , Lim Miin , Shin DongJo
Published: November 2024

Although mathematics education policy has a significant impact on the educational settings, it has received limited attention from mathematics education researchers. In this study, we examined the status of implementation of mathematics education policy projects in 2023, such as the Intelligent Math Classroom, the Teacher-Student Math Sharing Team, and the Math Jumping and Sharing School, which are part of the Third Comprehensive Plan for Mathematics Education. We conducted surveys of teachers and students to assess their satisfaction with these individual projects and to gather feedback for improvement. To do this, we developed survey items and conducted an online survey, collecting responses from 1,713 teachers and 19,193 students. The results show that the participants were generally positive about the implementation of these policy projects and perceived improvements in students’ mathematical competence and affective domains. Based on the results of the survey, we discuss the achievements of the mathematics education policy projects and provide insights for further improvement.
Phytotherapy in dentistry: current approaches and perspectives
Authors: Brudyan G.S. , Mikhailov V.D.
Published: November 2024

The article provides an overview of current research and approaches to the use of herbal medicine in dentistry. The main groups of herbal preparations used for the prevention and treatment of dental diseases are considered, including anti-inflammatory, antimicrobial, regenerating and pain-relieving agents. The results of clinical trials evaluating the efficacy of herbal preparations in the treatment of caries, pulpitis, periodontitis, stomatitis and other pathologies are analyzed. Particular attention is paid to the benefits of herbal medicine, such as low toxicity, minimal side effects, and good tolerability. Prospects for further research in the development and implementation of new herbal medicines for dentistry are considered. It is concluded that herbal medicine has great potential and its integrated application in practical dentistry is feasible.
The quality of education is the quality of a specialist in his profession
Authors: Khabibulina M.M. , Shamilov M.D.
Published: November 2024

Training is an organized cognitive activity, both of a teacher and a student, which includes a number of cognitive mental processes — perception, memory, thinking, imagination and accessible transfer of accumulated knowledge necessary to solve special highly qualified processes in medicine. Solving the issues of improving the quality of education, it is possible to use the sequence of some stages of the cognitive process — this is the emergence of a problem situation in school, analyzing the situation, trying to solve this problem in known ways and the need to search for new solutions that will improve the quality of the educational process in medical schools.
Prevention of osteochondrosis of the cervical spine in medical college students
Authors: Tikhonov S.V. , Maksimova I.G. , Solovyova A.A.
Published: November 2024

The article deals with the organization of preventive work of osteochondrosis of the cervical spine (COP) in students of medical college, practical observations among students of St. Petersburg College No. 2 are given in order to develop effective methods of disease prevention.
Analisis Pengaruh Kemudahan dan Kemanfaatan Terhadap Minat dan Perilaku Menggunakan QRIS Sebagai Alat Pembayaran Pada Usaha Kuliner di Kota Mataram
Authors: Sari Baiq Nirmala , Chaidir Taufiq , Yudha I Dewa Ketut
Published: November 2024

The rapid development of digital technology has encouraged Bank Indonesia to set QRIS as the standard payment system in Indonesia. Many micro-entrepreneurs have started using this payment system. They are able to compete and follow the trend of technological developments. The purpose of this study was to analyze the effect of convenience and usefulness on the interest and behavior of using QRIS as a payment method in culinary businesses in Mataram City, the data collection method used a survey sample, the number of respondent samples was 91 micro-entrepreneurs in the culinary sector in Mataram City. The analysis tool used was a mediation regression model with path analysis that adopted the Technology Acceptance Model (TAM) model. The results of the study showed that partially convenience did not have a significant effect, while usefulness had a significant effect on interest in using QRIS, convenience did not affect behavior, conversely usefulness had a significant effect on behavior of use. Convenience on behavior of use mediated by interest did not have a significant effect, while usefulness on behavior of use mediated by interest had a significant effect
Bahasa Dan Identitas Dalam Novel Segala Yang Diisap Langit Karya Pinto Anugrah: Pendekatan Antropolinguistik
Authors: Putri Yolanda Z , Usman Fajri , Marnita Rina
Published: November 2024

This study explores the relationship between language and identity in the novel Segala yang Diisap Langit by Pinto Anugrah using an anthropolinguistic approach. Through qualitative analysis, the research focuses on how language is used to reflect and shape the identity of the Minangkabau community. The findings reveal that the use of the Minangkabau language in the novel serves not only as a communication tool but also as a rich cultural identity symbol. The combination of Minangkabau and Indonesian lexicons reflects the characters' struggles with their identities amidst social change. Additionally, the representation of traditions and customs through language acts as a means to preserve inherited cultural values. In this context, language plays a crucial role in maintaining Minangkabau identity and responding to modernization and globalization. This study contributes to understanding the role of language as a medium for negotiating identity within a society undergoing cultural transformation.
Corporate Social Responsibility dan Kinerja Keuangan: Pandemi Covid 19 Sebagai Variabel Moderasi
Authors: Effendy Lukman , Isnaini Zuhrotul , Isnawati Isnawati
Published: November 2024

This study aims to examine the effect of Corporate Social Responsibility (CSR) on financial performance and the moderating effect of the COVID-19 pandemic on the relationship between CSR and financial performance. The sample for this study was determined using purposive sampling with the criterion of manufacturing companies that disclose CSR. The sample size in this study is 524 company-years. The analysis was conducted using Moderated Regression Analysis with STATA 17 software. The results show that CSR has a positive effect on financial performance, and the COVID-19 pandemic does not moderate the relationship between CSR and financial performance.
Deep kiloparsec view of the molecular gas in a massive star-forming galaxy at cosmic noon.
Authors:   , Arriagada Neira Sebastián
Published: November 2024

Presentamos observaciones profundas (∼20 hr) y de alta resolución angular del Atacama Large Millimeter/submillimeter Array (ALMA) de las transiciones CO (4 − 3) y [CI] (1 − 0), junto con el continuo de polvo a 630 μm en BX610 –una galaxia masiva de secuencia principal en la época de máxima formación estelar cósmica (z = 2.21). Combinadas con observaciones profundas SINFONI del Very Large Telescope (VLT) de la línea Hα, estas observaciones permiten una caracterización detallada del gas molecular y de la actividad de formación estelar en escalas de kiloparsecs. Nuestro análisis revela que la excitación del gas molecular, trazada por la razón de luminosidad de línea L′CO (4−3) / L′[CI] (1−0), disminuye al aumentar el radio galactocéntrico. Mientras que las razones de luminosidad de línea en la periferia son similares a las que suelen encontrarse en galaxias de secuencia principal a z ∼ 1, las razones en las regiones centrales de BX610 son comparables a las observadas en starbursts locales. En el suroeste de BX610 también hay un clump gigante de formación estelar extra-nuclear que muestra una elevada actividad de formación estelar, abundancia de gas molecular y excitación de gas molecular. Además, la región central de BX610 es rica en gas molecular (Mmol/M⋆ ≈ 1), pero con el alto nivel actual de actividad de formación estelar, el gas molecular se agotará en ∼450 Myr. Esto, junto con la evidencia de un rápido inflow de gas molecular hacia el centro (Genzel et al., 2023), sugiere que BX610 puede estar experimentando una fase evolutiva a menudo denominada compactación húmeda, que se espera que conduzca al agotamiento del gas central y a la subsiguiente extinción de la actividad de formación estelar.
k-Independent Boolean networks
Authors:   , ASTETE ELGUIN RAÚL SEBASTIÁN
Published: November 2024

En esta tesis, definimos un nuevo parámetro para estudiar redes Booleanas, denominado “número de independencia”. Establecemos que una red Booleana es k-independiente si, para cualquier conjunto de k variables y cualquier combinación de valores binarios asignados a estas, existe al menos un punto fijo en la red que tome esos valores en dicho conjunto de k índices. En este contexto, definimos el número de independencia de una red como el máximo valor de k tal que la red es k-independiente. Esta definición está estrechamente relacionada con diseños combinatorios ampliamente estudiados, como los “Coveringarrays” de fuerza k, también conocidos como conjuntos Booleanos con todas las k-proyecciones sobreyectivas. Nuestra motivación surge de comprender la relación entre el grafo de interacción de una red y sus puntos fijos, lo que ayuda a profundizar en el paradigma clásico de las investigaciones en esta dirección al incorporar una estructura particular sobre el conjunto de puntos fijos, más allá de simplemente observar su cardinalidad. Específicamente, nos centramos en estudiar grafos de interacción que admiten redes k-independientes, y mostramos que el grafo completo sin bucles con funciones de activación lineales alcanza la máxima fuerza no trivial. Además, presentamos construcciones que demuestran la existencia de re des k-independientes en n variables con grafos de interacción disconexos, conexos y fuertemente conexos. Finalmente, observamos que las simulaciones computacionales no lograron encontrar ejemplos de redes monótonas k-independientes. Esta observación motiva la sección 4.1 de esta tesis, donde utilizamos otro diseño combinatorio clásico, llamado sistema de Steiner, para construir redes monótonas k-independientes con grafo de interacción completo y sin bucles.
ANÁLISIS EXPLORATORIO DE LA COMPOSICIÓN Y DIVERSIDAD DE LAS COMUNIDADES BACTERIANAS PRESENTES EN RÍOS DE LA ZONA CENTRO SUR DE CHILE
Authors:   , AYBAR LAGOS MARCELO ANDRÉS
Published: November 2024

Las bacterias son un componente fundamental de los ecosistemas acuáticos, estas participan activamente en los ciclos biogeoquímicos, forman parte de la cadena trófica e influyen significativamente en la calidad del agua. Por lo anterior, sumado a sus cortos tiempos de vida y alta sensibilidad con su entorno, varios grupos de investigación a nivel internacional han centrado sus esfuerzos en integrar las comunidades bacterianas en las campañas de monitoreo y seguimiento ambiental de ríos y lagos. Sin embargo, el conocimiento de líneas base con respecto a estas comunidades en ambientes naturales y sus interacciones con agentes externos es aún muy limitado, lo que dificulta su uso como bioindicadores. En esta tesis se analizaron las comunidades bacterianas planctónicas y sedimentarias presentes en siete ríos de la zona centro sur de Chile con el objetivo de conocer cómo se componen, qué diferencias existen entre comunidades de agua y de lecho, en qué condiciones ambientales habitan y qué influencia ejercen estas condiciones sobre las comunidades.
Se recolectaron muestras de agua y de lecho, en una única campaña de terreno, y se utilizó secuenciación genética de alto desempeño (HTS) para determinar la composición taxonómica de las comunidades bacterianas. Las condiciones ambientales en las que habitaban las bacterias se caracterizaron con datos de parámetros fisicoquímicos, de caudales y de usos de suelo, obtenidos de mediciones en terreno y también desde registros gubernamentales. El procesamiento de los datos genéticos, los análisis de la estructura de las comunidades, las comparaciones entre comunidades de agua y de lecho, la evaluación de la influencia de las condiciones ambientales y las pruebas estadísticas se realizaron en el entorno del lenguaje de programación libre R. La composición de las comunidades fue consistente con estudios previos y se reconocieron diferencias en composición y diversidad entre agua y lecho. Las comunidades de agua, pese a la variabilidad ambiental, fueron muy similares entre sí, la diversidad alfa de estas se correlacionó con el área de cuenca y la diversidad beta con variables espaciales y de calidad simultáneamente. Por el contrario, en lecho se observó gran disimilitud, lo que podría indicar mayor influencia de aspectos locales, pero no se detectaron correlaciones significativas con condiciones ambientales. Esta área de investigación muestra gran potencial de desarrollo, se espera que este trabajo pueda ser utilizado como sustento para futuros estudios
SENSIBILIDAD DE LA CIRCULACIÓN OCEÁNICA DE MESOESCALA A SUBMESOESCALA A LOS VÓRTICES DE VON KÁRMÁN ATMOSFÉRICOS EN EL ARCHIPIÉLAGO DE JUAN FERNÁNDEZ
Authors:   , Amaya Cárcamo Constanza
Published: November 2024

Este documento articula una relación entre estética y ética, particularmente, entre las propuestas del filósofo alemán Georg-Hans Gadamer en su texto La actualidad de lo bello (1977), y la propuesta del español Alfonso López Quintás en su texto Estética de la Creatividad: Juego, arte, literatura (1998).
La manera en que se despliega esta relación entre estética y ética es unidireccionalmente desde estética hacia ética, desarrollándose por medio de vivir de experiencias estéticas ya sea obra de arte, símbolo, o fiesta para luego converger en reflexiones éticas.
Este problema se esclarece por medio tres partes: la primera, donde se desarrollan los tópicos que presenta Gadamer referenciándolos como ejes de la problemática; la segunda, donde se despliegan los contenidos desarrollados por López y a su vez puedan ser contenido en los tópicos de Gadamer. Y, la tercera, donde se ponen en discusión la perspectiva de ambos autores concluyendo con reflexiones finales sobre la relación entre estética y ética, tanto en lo formal como con un ejemplo proyectado hacia el futuro de la educación musical.
Control Predictivo Mejorado con Cancelación de Error en Estado Estacionario Mediante Retroalimentación de Estado
Authors:   , Andreu Oliva Marcos Lorenzo
Published: November 2024

Este trabajo contempla el estudio e implementación de un control predictivo, apoyado por realimentación de salida, capaz de alcanzar cero-error en estado estacionario para convertidores trifásicos con el objetivo de inyectar potencia activa y compensar reactivos en la red en aplicaciones solares fotovoltaicas. Esta situación se da en la industria minera – entre otras – donde la conexión de grandes cargas inductivas, como lo pueden ser motores eléctricos, produce un factor de desplazamiento inductivo y la implementación de energía solar fotovoltaica está tomando un papel importante en la búsqueda de reducir la huella de carbono.
Los arreglos fotovoltaicos se asocian típicamente a la inyección de potencia real o potencia activa a los sistemas eléctricos. Sin embargo, las topologías de acondicionamiento y conversión también tienen la capacidad de realizar compensación de reactivos. Así es posible aprovechar la topología del arreglo incluso si ésta no está generando potencia de manera activa. No obstante, la potencia a compensar también está limitada por la potencia aparente del sistema puesto que, a distintas condiciones ambientales, la potencia extraída de los paneles variará. Por lo que un análisis de la región de operación forma parte importante de esta propuesta.
El seguimiento de referencia con nulo error en estado estacionario es uno de los principales desafíos que presenta el control predictivo. La estrategia de control propuesta tiene en su centro una variante de la retroalimentación lineal de estados que añade un integrador puro en la retroalimentación de la salida, el cual puede ser utilizado para este propósito. Esta estrategia contempla los lazos de potencia activa, ligados a la tensión del panel fotovoltaico como la compensación de reactivos, asociada la fase de las corrientes trifásicas.
En este documento, el diseño de la estrategia de control de corrientes se realiza a partir del modelo en ejes sincrónicos de la topología. Un análisis teórico del error en estado estacionario, así como la sensibilidad y estabilidad del sistema indica que es posible corregir el error en estado estacionario del control predictivo ante incertidumbre de parámetros del sistema. Esto es luego comprobado por medio de simulación en MATLAB y PSim, que sirve de evidencia de su implementabilidad en plataformas digitales. Se construye un prototipo de acuerdo con la topología propuesta. La estrategia es implementada en una tarjeta DSP TMSF28335 de Texas Instruments. Los resultados experimentales muestran que la estrategia propuesta es viable para el control de corrientes dentro de una aplicación solar fotovoltaica.
60 Yaş ve Üstü Bireylerin İklim Değişikliği ile İlgili Düşüncelerinin Yeşil Sosyal Hizmet Bağlamında Değerlendirilmesi
Authors: Işık Abdullah , Ulus Zeynep , Şatıroğlu Güldalı Pelin
Published: November 2024

İklime dayalı sorunlar, dünya için giderek daha büyük bir tehdit haline gelmektedir. Küresel ısınma ve iklim değişikliği ve etkileri güncel küresel sorunlar arasında yer almaktadır. Son yıllarda sosyal hizmetin çevresel sorunlara olan ilgisi artmış ve yeşil sosyal hizmet kavramı ortaya çıkmıştır. Çalışma kapsamında yeşil sosyal hizmet, iklim değişikliği açısından ele alınmıştır. Bu çalışmanın amacı 60 yaş ve üzeri bireylerin iklim değişikliği ve küresel ısınma ile ilgili düşüncelerini yeşil sosyal hizmet bağlamında değerlendirmektir. Nitel araştırma yönteminin kullanıldığı çalışmada fenomenolojik yaklaşımdan faydalanılmıştır. Araştırma kapsamında Antalya ilinde yaşayan 25 farklı 60 yaş üstü birey ile derinlemesine görüşmeler yapılmıştır. Veriler yarı yapılandırılmış görüşme formu aracılığıyla toplanmıştır. Sıcaklığın fazla olması ve spesifik hava olaylarının ve bunların getirdiği sorunların sıklıkla yaşanması nedeniyle Antalya ili çalışma sahası olarak belirlenmiştir. Bununla birlikte iklim değişikliği ve küresel ısınmadan en fazla etkilenen gruplar dezavantajlı gruplar olduğundan ve iklim değişikliğinin zaman içindeki değişimini daha iyi anlayabilmek amacıyla çalışmanın 60 üstü bireylerle yapılmasına karar verilmiştir. Tematik analiz tekniğinin kullanıldığı araştırma sonucunda katılımcıların iklim değişikliği ve küresel ısınmaya dair değerlendirmelerinin kuraklık, mevsimsel değişimler yaşanması, insanların çevreye zarar vermesi ve hastalıklara daha sık yakalanmak gibi ana temalar etrafında şekillendiği anlaşılmıştır. 60 yaş ve üstü bireylerin iklim değişikliği ve küresel ısınma nedeniyle en sık deneyimledikleri sorunların dışarı çıkamamak ve sosyalleşememek olduğu, bununla birlikte gelecek nesillerin iklim değişikliği ve küresel ısınmanın yarattığı değişikliklerden daha kötü etkileneceklerine dair endişeleri olduğu, çevrenin bilinçsizce kirletilmesinden tedirgin oldukları anlaşılmaktadır. Ayrıca iklim değişikliği ve küresel ısınma nedeniyle gelecekte gıda ve su yetersizlikleri, sıcaklıkların artması, su ve enerji savaşları gibi olayların sıklığının da artacağı, gelecekte iklim değişikliği nedeniyle göç hareketlerinin de artacağına dair düşünceleri olduğu sonucuna ulaşılmıştır. Çalışmanın iklim değişikliğinin içinde bulunulan dönemin en temel sorunlarından biri olması, tüm dünyayı ilgilendiren güncel bir konu olması ve literatüre yapacağı katkı bakımından oldukça önemli olduğu düşünülmektedir.