bluuebunny/crossref_metadata_2025 huggingface dataset:
Energy policy implications of Ecuador’s NDC
Authors: Castro-Verdezoto Pedro L. , Pereira Da Cunha Marcelo , García-Gutiérrez Ángel , Quintero Montaño Washington
Published: November 2024

In the third national communication submitted by Ecuador, the total greenhouse gases (GHG) emission was calculated at 80,627 GgCO2-eq, considering the country’s commitment to the Framework on Climate Change. In 2018, Ecuador ratified its nationally determined contribution (NDC) to reduce its GHG emissions by 11.87% from the business-as-usual (BAU) scenario by 2025. The macroeconomic impacts of NDC implementation in the energy sector are discussed. A Computable Equilibrium Model applied to Ecuador (CGE_EC) is used by developing scenarios to analyze partial and entry implementation, as well as an alternative scenario. Shocks in exogenous variables are linked to NDC energy initiatives. So, the NDC’s feasibility depends on guaranteeing the consumption of hydropower supply, either through local exports or domestic demand. In the last case, the government’s Energy Efficiency Program (PEC) and electricity transport have important roles, but the high levels of investment required and poor social conditions would impair its implementation. NDC implementation implies a GDP increase and price index decrease due to electricity cost reductions in the productive sector. These conditions depend on demand-supply guarantees, and the opposite case entails negative impacts on the economy. The alternative scenario considers less dependence on the external market, achieving higher GDP, but with only partial fulfillment of the NDC goals.
Simplified mathematical model of oxy-fuel combustion of municipal solid waste in the grate furnace: effect of different flue gas recirculation rates and comparison with conventional mode
Authors: Copik Paulina , Szlęk Andrzej , Ditaranto Mario
Published: November 2024

Bioenergy carbon capture technology (BioCCS or BECCS) plays a key role in the European Green Deal, which aims to decarbonize industry and energy sectors, resulting in the production of energy with negative CO2 emissions. Due to the biogenic origin of carbon contained in municipal solid waste (MSW), the application of carbon capture in waste incinera-tion plants can be classified as BioCCS. Thus, this technology has attracted scientists' attention recently since it reduces excessive waste and emissions of carbon dioxide. Currently, there are four incineration plants in the Netherlands, Norway and Japan, in which CO2 capture is implemented; however, they are based on the post-combustion technique since it is the most mature method and not requires many changes in the system. Nevertheless, the separation of CO2 from the flue gas flow, which contains mostly nitrogen, is complex and causes a large drop in the total performance of the system. Oxy-fuel combustion technology involves the replacement of air as an oxidizer into high purity oxygen and recirculated exhaust gas. As a result, CO2-rich gas is produced that is practically ready for capture. The main goal of the study is to develop a math-ematical model of oxy-waste combustion to answer the research questions, such as how the composition of oxidant that is supplied to the process affects the combustion performance. The model includes all important processes taking place within the chamber, such as pyrolysis, char burnout and gas combustion over the grate. The results of the work will contribute to the development of oxy-waste incineration plants and will be useful for design purposes.
Adaptionen des Friedensbegriffs in Caesars Kriegsberichten
Authors: Beer Beate
Published: November 2024

Um den Friedensbegriff in Caesars Kriegsberichten herauszuarbeiten, werden Stellen aus zwei Texten des zeitgenössischen Politikers und Denkers Cicero (De re publica und De officiis) herangezogen. Cicero bestimmt Frieden durch eine rechtliche Ordnung und Sprache als ihrem Instrument. Vor diesem Hintergrund wird deutlich, dass Frieden in Caesars Bericht über die Eroberung Galliens (commentarii de bello Gallico) eine imperiale Rechtsordnung statuiert, wo zuvor offene Verhältnisse bestanden. Im Bericht über den Bürgerkrieg (commentarii de bello civili) dagegen greift Caesar auf eine republikanische Rechtsordnung zurück, die dem Krieg als zu restituierendes Modell vorausgeht und so den Friedensbegriff bestimmt. Verhandlungen aus gleichrangigen Positionen werden zum Ziel erklärt, was sich stilistisch in der Zunahme direkter Rede niederschlägt. Die Untersuchung erweist nicht nur Caesars Friedensbegriff als situativ adaptiert und von der Art des Krieges abhängig, sondern erhellt auch den in der Forschung oft diskutierten Einsatz indirekter und direkter Rede als stilistische Mittel imperialer beziehungsweise republikanischer Friedensordnung. Letztere ist Referenzpunkt insbesondere für die Debatte am Apsus und die Schlachtreden der beiden Bürgerkriegsgegner Caesar und Pompejus in den commentarii de bello civili (3, 19 und 85–86).
Tuberculosis in Times of War and Peace
Authors: Schulthess Bettina , Egli Adrian
Published: November 2024

This chapter provides a comprehensive analysis of tuberculosis (TB) across different historical contexts of war and peace, underscoring the disease’s resilience and adaptability. It highlights the exacerbation of TB transmission due to war-related factors such as mass displacement, malnutrition, and compromised healthcare systems, while also noting periods of peace as opportunities for advancing TB control measures. The chapter examines the impact of major conflicts on TB incidence and management, including World Wars I and II and more recent conflicts like the Ukraine war. It also discusses the evolution of TB control efforts, from the discovery of Mycobacterium tuberculosis to modern strategies against drug-resistant TB, emphasizing the importance of international collaboration and integrated public health strategies to combat this enduring global health challenge.
The Role of Labour Law in Enabling Mechanisms for Mitigating Military Conflicts. A Legal Model of Peace
Authors: Shapovalova Kateryna
Published: November 2024

The world is perpetually shaken by various forms of military conflicts, and these occurrences have consistently captured the attention of the International Labour Organization (ILO) due to their profound impact on far-reaching consequences on an international labour market.
Our study aims to address potential strategies for mitigating risks arising from military conflicts. We firmly believe that labour law should be highly flexible and centered on neutralizing the ramifications of conflicts for states and citizens. Our research question guides the examination of labour law, using the ILO and Swiss labour law as cases, considering the location and scale of the military conflict. Existing literature on the development of the ILO’s legal and regulatory framework predominantly focuses on events, with limited attention given to analyzing the connections between them and lessons for the present. It is crucial to explore these connections to prevent the repetition of negative historical patterns and the compounding of problems.
We express deep concern regarding the impact of military zones on the world of work. There is an imperative need for heightened attention to labour law response mechanisms. We strongly claim certain spheres of work must remain neutral concerning military conflicts. Labour law has long been engaged in formulating specific rules of conduct for employers and employees during the outbreak of armed conflicts. We contend labour law norms can serve as a means of promoting peace. In this regard, digital tools like the «Digitale Peer-Gruppen-Beratung» can prove instrumental in implementing pre-agreements among nations, employers, trade unions, and workers. By expanding functions from consultative to providing relocation of groups of workers due to the unscrupulous foreign policies of their countries we would contribute to a more peaceful world. This should be based on having pre-established agreements between nations regarding the fair and equitable distribution or temporary deployment of labour resources, particularly those crucial to the military and related industries of the conflicting parties.
The concept of a strike merits consideration as a democratic tool, wherein workers relocate centralized because of disagreement with their country’s policies. It necessitates clarification to ensure non-interference in the internal affairs of nations and to consider industry-specific factors (e.g., continuous production cycles).
Enhancing Efficiency Through Hydrogen-Powered Hyperloop Capsules: AI-Assisted Route Planning in Accordance with Circular Economy Principles
Authors: Blaut Jędrzej , Duda Jerzy , Rumin Rafał , Pękała Dawid , Merolla Thomas
Published: November 2024

This study investigates the feasibility of integrating Hyperloop technology with hydrogen fuel systems. The primary objective was to evaluate how Hyperloop infrastructure can incorporate hydrogen refueling stations to optimize transport efficiency and sustainability. The research utilized simulation models developed with ArchiCAD and FlexSim software to analyze the integration of Hyperloop cargo and passenger transport with hydrogen refueling processes. The study included detailed simulations of Hyperloop operations and refueling logistics, focusing on safety, efficiency, and the potential for reducing carbon emissions. Key parameters such as capsule speed, refueling times, and infrastructure requirements were analyzed. Results indicated that Hyperloop technology can significantly enhance transport efficiency, particularly for high-value and time-sensitive goods, while hydrogen refueling stations offer a sustainable energy solution with considerable potential for reducing environmental impact. The findings demonstrate that integrating hydrogen refueling stations into the Hyperloop system can improve operational efficiency and sustainability. However, challenges remain in optimizing refueling processes and infrastructure development. Future research should address these challenges and explore additional AI-based optimization techniques to enhance the overall system performance. This research is especially useful for urban planners, transportation engineers, and policymakers aiming to develop efficient, sustainable transportation systems that incorporate cutting-edge technology like Hyperloop and hydrogen refueling infrastructure.
Employee Safety in the Conditions of Industry 4.0
Authors: Górny Adam
Published: November 2024

The safety of employees during the implementation of work processes is one of the important conditions for the efficient implementation of production tasks. The situation does not change with the use of automation and robotization. On the contrary, it may be a source of hazards in new areas, requiring specific actions to limit the possibility of accidents occurring or to limit their consequences. These actions should be taken in a manner appropriate to the nature of the non-conformities. The study, based on the analysis of literature and a case study conducted in a production organization, showed the most important factors that may disturb the efficient implementation of production tasks. The study presents the key conditions for the development and operation of Industry 4.0, in accordance with the recommendations of the European Union and guidelines indicated in the scientific literature. The obtained results are addressed to the information of people responsible for the development of I4.0, taking into account “the safety aspects”, in industrial enterprises where the implementation of tasks requires cooperation between humans and machines. Statistical analysis was not included in the study. The author attempts to identify relationships that justify further research conducted to establish the existing correlations regarding supporting organizational development professionals, and in particular helping them identify potential problems in order to provide their organization with an advantage in the global competitive environment.
Decision Support System for the Design Process of Apatite Biopolymer Composite Parts
Authors: Panda Anton , Dyadyura Kostiantyn , Dmitrishin Dmitriy , Smorodin Andrey , Prokopovich Igor
Published: November 2024

In connection with the increase in the number and severity of various types of bone tissue injuries received as a result of wounds during military operations in Ukraine, an important issue in orthopedics and traumatology is making informed decisions about the possibility of restoring the integrity and functions of bone tissue when using different types of composition, porosity and strength of apatite-biopolymer composites. The scientific direction of research is the development of principles and methods for making scientifically based decisions in the design and additive manufacturing of bone substitutes based on apatite-biopolymer composites with functional properties depending on the nature of the localization of the cavity bone defect and its size. A set of methods for analyzing images of bone tissue, taking into account its spatial structure, which are obtained by sensors of different physical nature, with the use of neural network models, development of methods of their design, optimization and training is proposed. The new knowledge obtained as a result of the project will become the necessary basis for making optimal decisions in practice for the introduction of the latest methods of treatment and prosthetics in trauma surgery, oncology, cranio-maxillofacial surgery, dentistry, taking into account the risks of biocompatibility of apatite-biopolymer composites. Software development of an intelligent decision support system will be used to design bone substitutes with controlled composition, structure, porosity and mechanical strength for the further selection of additive technology for its production from apatite-polymer composites, which will contribute to increasing the efficiency of treatment and prosthetics in orthopedics and traumatology.
Investigation of Electrochemical Discharge Machining for Tungsten Carbide: Effects of Electrolyte Composition on Material Removal Rate and Surface Quality
Authors: Najm Vian N. , Abbas Tahseen F. , Aghdeab Shukry H.
Published: November 2024

Tungsten carbide (WC-Co) with a cobalt binder has been widely used in industrial application. Through their high wear resistance and hardness, which make it a challenge to machine. Electrochemical discharge machining (ECDM) is a newly developed hybrid technique used to machine conductive and nonconductive materials. Tungsten carbide machining is an area that needs more investigation. In this study, different types of electrolytes have been tested in the electrochemical machining of tungsten carbide. It has been concluded that tungsten carbide was successfully machined with electrolytes that were either neutral salts or a combination of neutral salts and hydroxides, the highest material removal rate achieved was (0.09250 g/min), and the average surface roughness achieved in this work was measured at (Ra 0.9275 µm). However, deposition took place on the surface of machined tungsten carbide when the samples were treated with sodium hydroxide and potassium hydroxide. EDX analysis of successfully machined tungsten carbide samples reveal the presence of carbon (C) due to diffusion from the base material and oxygen (O), most likely due to oxidation brought on by the high temperatures utilized. Scanning electron microscopy confirmed that the machined surfaces had craters, pores, restricted microcracks, and re-deposited melt particles, among other things.
Blockchain in Enterprise Resource Planning Systems: A Comprehensive Review of Emerging Trends, Challenges, and Future Perspectives
Authors: Isbaih Sara , Noman Hassan Al , Aljarwan Abdalla , Owais Ibrahim Al , Yosry Ahmed , Bahroun Zied
Published: November 2024

This research paper conducts a systematic review of the integration of blockchain technology with Enterprise Resource Planning (ERP) systems, a burgeoning field at the intersection of advanced technology and business management. The primary objective is to bridge the knowledge gap by synthesizing existing literature, providing insights into the current state, challenges, and potential of blockchain in enhancing ERP systems. The study follows a structured methodology involving four key stages: Literature Retrieval, Literature Screening, Biblio-metric Analysis, and Content Analysis. A comprehensive literature search in the Scopus database resulted in the identification and analysis of 250 scholarly articles, narrowed down to 66 relevant publications. The findings highlight a significant trend towards decentralized ERP solutions, driven by blockchain’s promise of enhanced security, transparency, and efficiency. Key areas impacted by blockchain integration include supply chain management, accounting, security, traceability, purchasing, and process automation within ERP systems. The bibliometric analysis reveals a growing academic interest in this domain, with a focus on scalability, data security, and interoperability. However, the integration faces challenges such as technical complexity, cultural resistance, and regulatory uncertainties. The study concludes that while blockchain presents transformative opportunities for ERP systems, realizing this potential requires overcoming substantial technical and organizational hurdles. Future research should concentrate on developing scalable, interoperable blockchain solutions, tailored to specific industry needs and compliant with regulatory standards, thereby facilitating widespread adoption and maximizing the benefits of blockchain in ERP systems.
Pengaruh Promosi Menggunakan Foto Produk pada Kegiatan Wirausaha: Systematic Literature Review
Authors: Lutfiyana Sayyidah Hikma , Juhana Agus
Published: November 2024

Lanskap dunia wirausaha telat dipengaruhi era digital secara signifikan. Peralihan dari teknik promosi tradisional ke promosi digital telah membawa dampak pada kegiatan wirausaha. Tidak dapat dipungkiri, estetika visual pada proosi menggunakan teknologi digital berpengaruh penting terhadapa penjualan. Tujuan dari penelitian ini adalah untuk menilai dampak dari strategi promosi menggunakan visual produk terhadap perilaku konsumen. Metodologi penelitian yang digunakan dalam penelitian kali ini berasal dari pendekatan ilmiah yang dikenal sebagai Systematic Literature Review (SLR). Berdasarkan materi yang ditinjau, terbukti bahwa foto produk memberikan dampak yag signifikan dalam membangkitkan minat dan memfasilitasi keputusan pembelian konsumen dalam pasar sasaran.
Memotret Dunia Anak Autis dalam Fotografi Liam’s World Karya Erin Lefevre
Authors: Rahardian Adinatasya Luthfiyyah , Heriyawati Yanti
Published: November 2024

Fotografi dokumenter dapat memvisualisasikan secara jelas gagasan dan tulisan yang dibuat oleh seorang fotografer jurnalistik. Erin Lafevre adalah salah satu fotografer dokumenter di New York City yang mengabadikan aktivitas keseharian dari adiknya yang didiagnosa autisme. Kajian ini dilakukan pada tiga karya foto Erin Lafevre dari keseluruhan karya berjudul Liam’s World. Metode EDFAT diterapkan untuk mengidentifikasi tanda-tanda pada foto. Teori semiotika Roland Barthes digunakan untuk menganalisis makna denotasi dan konotasi dari ketiga karya foto yang dikaji. Secara denotatif foto-foto tersebut menunjukkan Liam sebagai anak autis ketika komunikasi tidak melihat lawan bicaranya, berbeda fokusnya ketika interaksi sendiri seperti menggambar atau menyentuh benda tertentu. Secara konotatif, anak autis sulit fokus saat interaksi dengan orang lain dan mudah terdistraksi dengan benda menarik lainnya yang ada di sekitarnya, sisi lain kemandiriannya dapat diasah secara optimal. Hasil kajian menunjukkan foto-foto tersebut mampu menangkap peristiwa secara objektif. Liam sebagai anak autis aktivitasnya tertangkap kamera yang menunjukkan bagaimana karakteristik dan kecenderungan anak autis dalam berbagai macam aktivitas: cara merespon, berinterkasi, dan berkomunikasi. Foto memiliki cara sendiri dalam bercerita dan bersuara melalui visual.  Kata kunci: autis, fotografi, semiotika
Pemberdayaan Budaya Visual Erison J. Kambari dalam Ranah Pelestarian Budaya Lokal Sumatera Barat
Authors: Susanti Indah
Published: November 2024

This article reveals the sides of photography  by local photographers. The method used is to analyze the work of Erison J Kamari and the appreciation of the audience for his photographs. The method used in this research is qualitative. The result of this research is how to promote and introduce the local potentials of West Sumatran culture by Erison through his visual records. The actions of this photographer from Kurai provide realization in professional art creation management. Capturing moments that cannot be separated from patience, basic understanding of photography techniques, selection of ideas, writing captions and being able to help promote the tourism sector. Erison's gait was able to invite young photographers to care about the culture of West Sumatra, one of which was through the Jawi race. The implication of this research is that it has a positive impact on the tourism sector and the economy.Keywords: Erison J. Kambari, Visual culture, Photographer and West Sumatra. This article reveals the sides of photography  by local photographers. The method used is to analyze the work of Erison J Kamari and the appreciation of the audience for his photographs. The method used in this research is qualitative. The result of this research is how to promote and introduce the local potentials of West Sumatran culture by Erison through his visual records. The actions of this photographer from Kurai provide realization in professional art creation management. Capturing moments that cannot be separated from patience, basic understanding of photography techniques, selection of ideas, writing captions and being able to help promote the tourism sector. Erison's gait was able to invite young photographers to care about the culture of West Sumatra, one of which was through the Jawi race. The implication of this research is that it has a positive impact on the tourism sector and the economy.Keywords: Erison J. Kambari, Visual culture, Photographer and West Sumatra.
Analysis of Water Dynamics at the Effluent Treatment Station of Cooperoque: Evaluation of Precipitation, Evaporation, and Infiltration of Effluent from a Milk Refrigeration Station
Authors: Stracke Marcelo Paulo , Sauer Leandro , Huber Miguel
Published: November 2024

Purpose: The study aims to analyze water dynamics at the Cooperoque Effluent Treatment Station, focusing on the interactions between precipitation, evaporation, and effluent infiltration to enhance water resource management.
 
Theoretical reference: The research references various studies and methodologies related to the quantification of evaporation from lakes and reservoirs, particularly in semi-arid regions, utilizing the Jensen-Haise Method for evaporation estimation. The research aligns with previous studies, such as Mallmann (2014), on water infiltration in soil management, emphasizing the importance of understanding water dynamics for sustainable resource management.
 
Method: The study employs the Jensen-Haise Method to calculate evaporation rates, covering the period from January 2023 to October 2024. It examines the effects of precipitation, evaporation, and effluent infiltration on tank levels.
 
Results and conclusion: The results reveal that tank levels are influenced by precipitation, evaporation, and effluent infiltration, with more significant declines during dry months and smaller reductions during periods of high precipitation. Evaporation rates, calculated using the Jensen-Haise Method, are higher in warmer months, contributing to lower tank levels, while these rates decrease in colder months. A notable anomaly occurred in May 2024 when effluent infiltration exceeded the volume of generated effluents and rainfall due to the activation of an irrigation system. Key findings indicate that lake levels drop more during dry months, with a significant negative water balance observed in May 2024 due to excessive infiltration during heavy rainfall. The study concludes that adaptive water management strategies are necessary to address climatic variations and improve the efficiency of the effluent treatment system.
 
Implications of research: The research provides valuable insights for developing adaptive water management strategies to address climatic variations and improve the efficiency of effluent treatment systems. Continuous monitoring is emphasized as crucial for sustainable water resource management.
 
Originality/value: The study highlights the complex interactions between precipitation, evaporation, and effluent dynamics, offering a foundation for improved water management practices and contributing to the preservation of regional water resources. The study contributes to the understanding of water dynamics at effluent treatment stations, offering practical insights for managing water resources effectively. It highlights the importance of adaptive strategies and continuous monitoring to maintain pond levels and optimize the treatment process.
Carbon Footprint and Automation in Aquaculture
Authors: Macedo Humberto Rodrigues , Luiz Junior Olavo José , Werneck Pedro Rondon , Feiden Aldi
Published: November 2024

Objective: This paper proposes research on the state of the art of automation and carbon footprint in aquaculture.
 
Theoretical Framework: The development of electronics and automation, which are so prevalent in everyday activities and industries, has contributed to the advancement of automation levels in aquaculture. The use of electrical sensors could be an alternative for estimating the carbon footprint of aquaculture production systems.
Method: The methodology was based on scientific research with a qualitative approach on automation and the carbon footprint in aquaculture and observations made during visits to fish farms and fish technology fairs.
 
Results and Discussion: The levels of automation used in aquaculture are still low compared to other economic activities, especially industry. The use of existing technology in fish farms would raise the level of automation in aquaculture, but this transformation faces challenges on the part of fish farmers, such as: cost of access, difficulty of operation and lack of interest in investing in automation. The use of automation and control techniques could corroborate methodologies for estimating the carbon footprint during the animal rearing phase in excavated ponds.
 
Research Implications: Promote discussion on the use of new technologies and influence research on the theme of carbon footprint and automation in aquaculture.  Advance research into the need to expand the use of automation in fish farms.
 
Originality/Value: This study contributes to the literature by reviewing the state of the art of automation in aquaculture, demonstrating the need for research to expand the use of technologies both to automate aquaculture farming and to estimate the carbon footprint during farming.
Sleep in hospitalized children with cancer: relationship with psychiatric disorders and hospital conditions
Authors: Güneydaş Yıldırım Burcu , Aykutlu Hasan Cem , Eren Tuba
Published: November 2024

Background. Children with cancer often undergo prolonged and recurrent hospitalization, which leads to an increased incidence of sleep disruptions and psychiatric disorders. This study aimed to objectively quantify the prevalence of sleep disruptions in hospitalized pediatric oncology patients and to determine the effects of psychiatric disorders, treatment regimens, and hospital conditions on sleep patterns.
Method. This cross-sectional study included 39 children who were undergoing treatment and monitoring in the pediatric oncology inpatient service. Parents completed questionnaires providing information about their child’s sleep patterns, quality of life, and hospital conditions. The children were monitored for five days using actigraphy to record sleep parameters. They were evaluated with a semi-structured interview form (Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version-DSM 5-Turkish Adaptation) for psychiatric diagnoses.
Results. Sleep disruptions were identified in 27 (69.2%) children with cancer. In addition to adjustment disorder and anxiety disorder psychiatric diagnoses, behavioral problems and emotional symptoms were more common in the group with sleep disruptions. Actigraphy measurements indicated that poor sleep was associated with younger age, recent cancer diagnosis, specific phobias, depression, daytime napping, and frequent vital sign assessments.
Conclusion. Sleep problems in hospitalized children with cancer are linked to psychiatric comorbidities, treatment routines, and hospital conditions. By recognizing psychiatric symptoms and optimizing hospital conditions that affect sleep, healthcare providers can enhance the quality of sleep for these children.
Import Ban Efficacy on Second-Hand Clothing in the Perspective of Regulatory and Sustainable Development Goals
Authors: Amrullah Dzikri Anik , Akhmaddhian Suwari , Yuhandra Erga
Published: November 2024

The study aims to analyze ban import effectiveness on second hand clothing in Kuningan Regency. The study utilized research specifications, an empirical legal approach. The findings revealed that Article 47 paragraph (1) of the Trade Law and Regulation of the Minister of Trade Number 40 of 2022; Amendments to Regulation of the Minister of Trade Number 18 of 2021 ban the importing of used apparel. In addition, the regulation is outlined in Article 69 of law number 32 of 2009; environmental protection and waste management, in fact, are not implemented effectively in Kuningan Regency and Second-hand clothing is related to sustainable development goals number 12, namely ensuring sustainable consumption and production patterns. There are seven thrift shops in the vicinity, but they are disregarded by law enforcement, with no supervision at all. To summarize, Kuningan Regency's local administration lacks a stronger legislative framework for law enforcement. As a result, it is critical to create a Regional Regulation governing imported used garments, as well as to socialize with business actors and the community.
Russian experience in managing interregional cooperation
Authors: Qu Xinmiao
Published: November 2024

The article analyzes Russia's experience in managing interregional cooperation, focusing on key concepts and regulatory support, as well as management bodies involved in coordinating interactions between regions. Legislative acts regulating the processes of cooperation and the activities of both state and local management agencies are considered, which allows a deeper assessment of their role in the implementation of interregional projects. Special attention is paid to successful examples such as Ural-Siberia and North-West, which contribute to the development of transport corridors and cultural ties. The article reveals the functions of government bodies, emphasizing the multilevel structure of management of interregional interactions in Russia, which is critical for economic growth, social integration and strengthening the unity of the country. The methodology allows to identify the key factors influencing the effectiveness of interregional cooperation, as well as to assess the role of management structures in the implementation of joint projects. The scientific novelty of the article lies in the systematic analysis of interregional cooperation in Russia, which allows us to identify its unique characteristics and trends. Unlike existing studies, this work focuses on the interaction of federal and local authorities, as well as on the analysis of legislation regulating interregional relations. The findings of the study emphasize that effective interregional cooperation requires an integrated approach, including improved coordination between management levels, the development of a unified legal model and the active participation of regions in federal initiatives. The article also reveals the importance of financing interregional programs, demonstrating their positive impact on the socio-economic development of regions, which is confirmed by concrete examples of successful projects and agreements. Thus, the work makes a significant contribution to understanding the mechanisms and dynamics of interregional cooperation.
Fluid-Structure Interactions of a Fin over a Compliant Panel in Supersonic Flow
Authors: Mills John G. , Craig Dutton J. , Ehrhardt David A. , Elliott Greg
Published: November 2024

The fluid-structure interactions of a blunt fin mounted over a compliant panel in Mach 2 flow were investigated. The test geometry consisted of a thin, flexible panel fixed on all edges with a blunt fin with a hemispherically rounded leading edge mounted in a manner that the leading edge of the fin overhung the panel. The blunt fin was also pivoted to several angles of attack with respect to the oncoming flow. This allowed for the study of the dynamic system created by the interactions between the compliant panel and the blunt fin geometries. Both rigid and compliant panel models were used in order to provide a comparison between the flow with and without the dynamics of the compliant panel. High-speed schlieren and surface oil flow visualizations showed that the time-averaged flow remained almost entirely unchanged between the rigid and compliant panels. The instantaneous flow fields, however, showed a highly dynamic system where the compliant panel induced oscillatory shock waves that were both stationary and freely moving. Simultaneous high-speed schlieren visualization and stereo digital-image correlation showed a strong linkage between the motion of the shock waves and the deformation of the panel. This was demonstrated through frequency analysis and modal decomposition of the panel deformation and shock motions.
Numerical Study of Facility Pressure Effects on Micronozzles for Space Propulsion
Authors: Nishii Keita
Published: November 2024

This study used a direct simulation Monte Carlo approach to investigate the effects of facility pressure on micronozzles for the propulsion systems of microspacecraft. The simulations quantitatively evaluated the effect of background pressure on the micronozzle performance in nozzle flows ranging up to a throat Reynolds number of 220. The results showed that the background pressure could reduce total thrust by more than 50% as the inverse of the nozzle pressure ratio increases from 0 to [Formula: see text]. The primary cause identified was the gas depletion created by the collision of the nozzle plume with the background gas, which creates a negative thrust on the wall surface surrounding the nozzle. The trend of the background-gas-pressure effect differed at each Reynolds number. The wall size also affected the thrust in finite background pressure. Furthermore, this study emphasized the critical role of test-facility conditions in accurately predicting the performance of micronozzles and provided the knowledge necessary to properly predict their performance during space operations.
Aeroelastic Effects in Supersonic Shock-Turbulent Boundary Layer Interaction over Flexible Panels
Authors: Kokkinakis Ioannis W. , Drikakis Dimitris , Michael Spottswood S. , Brouwer Kirk R. , Riley Zachary B.
Published: November 2024

The dynamic coupling between a Mach 1.94 shock wave/turbulent boundary layer interaction (SBLI) and a flexible panel is investigated. High-order numerical simulations are performed for distinctly different dynamic panel motions and rigid snapshots of their maximum deflected shape. They are compared with a baseline interaction over a rigid planar wall. The panel’s dynamic surface motions were obtained from the Air Force Research Laboratory (AFRL) wind tunnel experiments. The primary aim of the study was to determine whether there were any differences in the flow pressure loading on the compliant panel due to the various rigid and dynamic deformations considered. The results show that the examined panel deformations increase the SBLI size near the panel midpoint, where the deformation amplitude tends to be the largest. Relative to the rigid planar case, the examined surface deformations cause the mean-flow high-pressure surface loading caused by the impinging shock wave to shift downstream along the compliant panel midspan, albeit by a small amount. The spectrogram of the dynamic deformation and the flow surface pressure response suggests that the two are strongly coupled at the dominant (primary) mode but less so at the secondary modes. Although the primary mode frequencies overlap, they do not exactly match, with the pressure response frequency always being slightly higher in all three cases. The rigid deformations did not enhance the pressure power content at the SBLI. However, pre-SBLI and near the panel leading edge, the pressure power spectrum weakly increased throughout the resolved frequency range and overlapped with the onset of the amplification found in the dynamic deformation cases. Post-SBLI, the rigid deformations cause a weak enhancement at frequencies below 1 kHz, which closely match the dominant and secondary pressure response frequencies obtained in the dynamic cases.
A comparative study to evaluate the safety and efficacy of low-dose isotretinoin monotherapy versus a combination of low-dose isotretinoin and superficial chemical peels in patients with moderate-to-severe acne vulgaris
Authors: Siva Bala Vaishnavi Kolluri , Vijaya Lakshmi Chelikani , Chandrapola Vivek , Sompalli Suryanarayana , Kavya Meeripelli , Spandana Parasurampuram
Published: November 2024

Objectives:

The aim of the study was to compare the safety and efficacy of low-dose isotretinoin (LDI) monotherapy versus a combination of LDI and superficial chemical peels in treating moderate-to-severe acne in patients attending tertiary care hospital.

Material and Methods:

Sixty patients in the age group of 15–45 years having moderate-to-severe acne vulgaris were enrolled in the study. The patients were randomly divided into two groups of 30 patients each by random table number method. Group A – patients were put on LDI (0.25 mg/kg body weight [wt]) for 3 months. Group B – LDI (0.25 mg/kg body weight) was started, and these patients were subjected to six sessions of sequential superficial chemical peels every fortnightly for 3 months.

Results:

Treatment outcome was measured in terms of improvement in global acne grading (GAG) score, pigmentation, scarring, and seborrhea. The mean GAG score at week 0 in Group A was 29.2 ± 5.03, and Group B was 26.7 ± 5.11. The mean GAG score at week 12 in Group A was 15.9 ± 5.09, and in Group B was 9.23 ± 3.24, which showed statistically significant improvement (P < 0.001) in both groups. Post-inflammatory hyperpigmentation and erythema also improved significantly. There was no significant improvement in scarring, yet Group B showed a better response. The patient satisfaction score was high in Group B. Seborrhea improved equally in both groups.

Conclusion:

LDI gives a good balance between efficacy- and dose-related side effects. Both groups showed statistically significant results in terms of acne severity (global acne grading system (GAGS) W-0 26–29–W12 15– 9). Group B showed faster improvement than Group A.
Geochemical Correlation of Volcanic Rocks and Groundwater Quality in the Todoko-Ranu Complex, Sahu District, West Halmahera, North Maluku, Indonesia
Authors: Laratmase Lotong , Kusumayudha Sari Bahagiarti , Harjanto Agus
Published: November 2024

The research area is located in the Mount Todoko-ranu complex and its surroundings, Sahu District, West Halmahera Regency, North Maluku, Indonesia. This area geologically consists of Quaternary volcanic rocks with various petrochemical composition. On the other hand, natural water found in the research area generally physically appears turbid, while people who take water from this sites actually need clean water. As it is known, groundwater quality is influenced by the geochemistry of the aquifer through which it flows, therefore it is important to conduct a study on the geochemical correlation of volcanic rocks and groundwater quality in the research area. Thus, the aim of this research is to examine the geochemical characteristics of Mount Todoko-Ranu complex volcanic rocks, to analyze groundwater quality, and to study the correlation between the geochemical characteristics of rocks and the quality of groundwater in this volcanic complex. Methodology applied in this study was geological mapping, rock samples testing to determine the mineralogy chemical composition, groundwater, and surface water samples testing to identify their quality, and then correlation analysis. The results show that andesitic and basaltic-andesite of calc-alcaline volcanic rock complex is correlative to no dominant cation, but bicarbonate anion, or mixing type of natural water.
Rendre accessibles les savoirs de l’oralLe dispositif didactique pour lire à d’autres des discours en EMC
Authors: SALES-HITIER Dorothée , CHEVALLIER-RODRIGUES Émilie , SAVOURNIN Florence , DUPONT Pascal
Published: November 2024

Situé dans la perspective de l’éducation inclusive, cet article porte sur la question de l’accessibilité des savoirs dans le domaine de l’enseignement de l’oral au regard des inégalités scolaires et sociales liées à son usage. Il s’agit d’analyser, dès la conception d’une séquence, un dispositif didactique et les outils désignés qu’il comprend : en quoi une telle ingénierie, proposée par des chercheurs à des enseignants, favorise-t-elle l’enseignement et l’apprentissage de la lecture à d’autres considérée comme un genre oral ? Cette étude s’intéressera plus particulièrement à la lecture de textes de discours en Enseignement Moral et Civique porteurs d’enjeux thématique et pragmatique dans des classes de cycle 3 (élèves de 9 à 11 ans).
Mettre son corps en jeu dans la création de numéros disciplinaires en formation circassienne
Authors: Skelling Desmeules Marie-Eve
Published: November 2024

Cet article invite à mieux comprendre les expériences de création de numéros de spécialisation disciplinaire en contexte de formation professionnelle circassienne et des enjeux qui en découlent. Basée sur le concept d’expérience et sur la théorie de l’activité, cette recherche qualitative interprétative s’est tenue au Centre national des arts du cirque (France) et à l’École nationale de cirque (Canada). Grâce à la participation de 85 personnes et une collecte de données d’envergure (85 entrevues, 158 heures d’observation, 12 groupes de discussion), elle vise à faire principalement valoir la voix des étudiants et, de manière complémentaire, celle des enseignants.
Exploration des notions de corps et d'immersion dans les environnements en réalité virtuelle en éducation artistique
Authors: Lalonde Martin , Huebner Emma June
Published: November 2024

La réalité virtuelle (RV) s’intègre depuis une dizaine d’années à la culture contemporaine. Le milieu éducatif est enthousiaste à intégrer la technologie (Lewis et al., 2021; Mukasheva et al., 2023), mais la complexité technique et le manque d’études empiriques rendent la tâche difficile (Annamalai et al., 2023). Le projet ma.réalité (Lalonde et al., 2022) réunit des chercheurs et éducateurs pour explorer son potentiel en éducation artistique. Cet article présente une exploration d’environnements immersifs produits par des élèves, en mettant l’accent sur les notions d’immersion, de corps, de présence et d’interactivité. Les résultats préliminaires démontrent comment un dispositif en RV ouvre des perspectives de création et d’appréciation inédites en éducation aux et avec les arts numériques, des perspectives qui poussent la réalisation artistique au-delà de l’objet ou de l’événement esthétique pour l’amener dans le domaine de l’expérientiel.
Enhanced stability and properties of benzene-1,3,5-tricarboxamide supramolecular copolymers through engineered coupled equilibria
Authors: Kong Huanjun , Valverde-González Antonio , Maruchenko Régina , Bouteiller Laurent , Raynal Matthieu
Published: November 2024

Improving the stability of multi-component and functional assemblies such as supramolecular copolymers without impeding their dynamicity is key for their implementation as innovative materials. Up to now, this has been achieved by a trial-and-error approach, requiring the time-consuming characterization of a series of supramolecular coassemblies. We report herein that this is possible to significantly enhance the stability of supramolecular copolymers by a minimal change in the chemical nature of one of the interacting monomers. This is achieved by replacing an ester function by an ether function in the structure of a chiral benzene-1,3,5-tricarboxamide (BTA) monomer, used as “sergeant”, coassembled with achiral monomers, the “soldiers”. Pseudo-phase diagrams, constructed by probing the nature of the coassemblies with multifarious analytical techniques, confirm that the greater stability of the resulting copolymers is mainly due to the minimization of competing species. This leads to better rheological and catalytic properties of the corresponding supramolecular copolymers. Favouring coassembly over undesired assembly pathways must be considered as a blueprint for the development of better-performing supramolecular multi-component systems.
Ion pairing in aqueous tetramethylammonium–acetate solutions by neutron scattering and molecular dynamics simulations
Authors: Le Nguyen Ngoc Lan , Tichacek Ondrej , Jungwirth Pavel , Martinez-Seara Hector , Mason Philip E. , Duboué-Dijon Elise
Published: November 2024

Tetramethylammonium (TMA) is a ubiquitous cationic motif in biochemistry, found in the charged choline headgroup of membrane phospholipids and in tri-methylated lysine residues, which modulate histone-DNA interactions and impact epigenetic mechanisms. TMA interactions with anionic species, particularly carboxylate groups of amino acid residues and extracellular sugars, are of substantial biological relevance, as these interactions mediate a wide range of cellular processes. This study investigates the molecular interactions between TMA and acetate, representing carboxylate-containing groups, using neutron scattering experiments complemented by force field and ab initio molecular dynamics (MD) simulations. Neutron diffraction with isotopic substitution reveals specific ion pairing signatures between TMA and acetate, with simulations providing a detailed interpretation of the ion pairing structures. Force fields, notably CHARMM36 with the electronic continuum correction (ECC) (by a factor of 0.85) and AMBER99SB, capture essential pairing characteristics, but only revPBE-based ab initio MD simulations accurately model specific experimental features such as the low Q peak intensity in reciprocal space. Our study delivers a refined molecular model of TMA–carboxylate interactions, guiding the selection of force fields for complex biological systems where such interactions are of a significant importance.
Synthesis of 2-Aminobenzo[b]thiophenes via an Intramolecular Dehydrogenative C–S Bond Formation Effected by Iodine(III) Reagents
Authors: Bugaenko Dmitry , Karchava Alexander
Published: November 2024

A direct synthesis of medicinal chemistry-relevant 2- aminobenzo[b]thiophenes has been achieved from substituted thioamides of 2-arylacetic acids through a fast intramolecular cross-dehydrogenative cyclization, mediated by hydroxy(tosyloxy)iodobenzene (HTIB, Koser’s reagent). This synthetic approach is operationally simple, uses easily accessible substrates, and tolerates a variety of substituents at different sites, providing an opportunity for diversification.