bluuebunny/crossref_metadata_2025 huggingface dataset:
Fractional order Iterative learning controller with PSO-based parameters tuning for robotic systems
Authors: Živković Nikola , Lazarević Mihailo , Vidaković Jelena , Pišl Stjepko
Published: October 2024

This research investigates the improvement of trajectory tracking in robotic systems by employing a model-based controller and a fractional-order iterative learning controller (FOILC). Robotic systems are subject to high uncertainty in the mathematical model, which directly impacts the quality of the model-based control strategy. This study focuses on parametric uncertainty in the robot model. The proposed solution capitalizes on the synergies between model-based control and fractional-order iterative learning strategy. FOILC controller's task is to mitigate the influence uncertainty has on trajectory tracking iteratively. Central to this investigation is the tuning of control parameters, a task undertaken by utilizing the Particle Swarm Optimization (PSO) algorithm. By leveraging PSO, the FOILC control parameters are optimized to maximize the system's performance by reducing the trajectory tracking error according to the chosen objective function. The efficiency of the proposed control algorithms is evaluated through extensive simulation on a three degree of freedom robot arm. The findings underscore the performance improvement of the tuned fractional-order iterative learning controller over its integer-order counterpart in trajectory tracking. These results not only validate the efficiency of the FOILC approach but also highlight the significance of fine parameter tuning methodologies in advancing the capabilities of robotic systems based on the dynamics model.
High accuracy weapons
Authors: Knežević Dragan , Popović Milan , Simić Miloš , Marjanović Goran
Published: October 2024

Weapons and weapon systems of high accuracy, as well as the means to fight with them, represent the front and back of a new page in the development of military science and the construction of the armed forces. The mentioned weapons will define the character of the armed struggle in the near future. In this review paper, selected tube and missile systems were analyzed from the point of view of lethality, probability of destruction of targets and guidance systems.
Comparative analysis of YOLO algorithms for aircraft detection in remote sensing images
Authors: Adli Touati , Bujaković Dimitrije , Bondžulić Boban , Laidouni Mohammed , Andrić Milenko
Published: October 2024

Accurate object detection in remote sensing images, particularly for military aircraft, is imperative for strategic decision-making. However, this task encounters numerous challenges, including diverse aircraft categories, their variable sizes and geometries, complex backgrounds, environmental factors (weather conditions, lighting variations, shadows) and sensor parameters. This paper presents a comparative study of three state-of-the-art detection algorithms, including YOLOv5, YOLOv7, and YOLOv8, and it aims to explore the strengths and limitations of each algorithm in addressing the above challenges. Considering the specific problem of military aircraft detection, the experimental results were conducted on the Military Aircraft Recognition dataset (MAR20). The obtained results demonstrate that YOLOv7 outperforms other algorithms in terms of detection performance, achieving a global mean average precision (mAP) and (mAP0.5) by 67.7%, and 90.3% respectively.
Examination of the protection factor with a laser photometer
Authors: Miletić Miljan , Ilić Marina , Marković Tatjana
Published: October 2024

The work presented below deals with the modernization of the method for testing the protection factor of a protective mask against sodium chloride (NaCl) aerosols. The aim of the work is to show the possibility of modernizing the method which, unlike the existing method with a flame photometer (FP), uses a laser photometer (LP). The reason for this is the dependence of the accuracy of the method on the operation of the FP, which uses the combustion of hydrogen gas for its operation. Problems occur with changes in the hydrogen-oxygen concentration required for flame maintenance and FP operation, as well as the quality of hydrogen, which cannot be influenced. The main challenge in establishing the method is to find the ideal characteristics of the laser light source that enables the detection of aerosol NaCl particles and all other particles, especially carbon particles, whose number and concentration vary during the test, should be negligible, so filters for masking the photometer are not necessary for the operation of the new method. The function of the new method must meet the measurement of NaCl mass concentrations up to 15mg/m3 , and the measurement sensitivity is 5ng/m3 . The certified device FIELD MAX II was used to adjust and detect the wavelengths of the laser photometer as well as to determine the required power of the laser light source.
Simple energy detector for two-stage classification for antidrone systems
Authors: Zurovac Snežana , Petrović Nikola , Joksimović Vasilija , Pokrajac Ivan , Mikanović Darko , Sazdić-Jotić Boban
Published: October 2024

Signal detection theory, a fundamental concept in various scientific disciplines, involves mandatory measuring of the signal features. This theory finds applications in telecommunications, radar technology, medical devices, automation and process control, geophysical research, biometric systems, and security systems, emphasizing its broad significance. Likewise, drone detection in the radio-frequency domain is necessary for signal detection and ensures efficient and reliable communication, surveillance, and security. The recent conflict between Russia and Ukraine has underscored the crucial role of drones in modern warfare. Our research can improve the detection of any malicious drones that pose a threat, thereby underlining the significance of the proposed methodology in modern electronic warfare. This is a specialized approach to drone signal detection based on two-stage classification with two key components: a method based on spectrogram energy detection and deep learning classification. Energy detection on the spectrograms is particularly effective when the signal's energy characteristics differ significantly from the surrounding noise. The practical applicability of our proposed method was evaluated using the publicly available VTI_DroneSET dataset, which contains a diverse range of signals from three types of drones. Furthermore, we conducted tests with the VTI_DroneUSRP dataset and signals from the NI-USRP-2954 receiver, demonstrating the effectiveness and practicality of the proposed method in real situations. The successful detection and identification of Wi-Fi, Bluetooth, and drone signals in both ISM frequency bands were performed, proving the method's reliability. The proposed approach improved execution times and energy savings, indicating that applying the energy detector on the spectrograms in a two-stage classification significantly enhances the performance of ADRO applications for real-time drone detection. Furthermore, we conducted a comparative analysis of different deep learning algorithms at the outset of two-stage classification, which is a potential basis for adopting this approach.
Contemporary cryptography: Recent achievement and research perspectives
Authors: Jovanović Boriša , Tot Ivan , Ilić Silvana
Published: October 2024

In modern times, cryptography has been considered as a branch of both mathematics and computer science, and is tightly related to information security. With the accelerated progress of the Internet and the increase of digital communication, the need for stronger and more effective methods of cryptographic protection has become more pronounced. With the rapid increase in computing power, the potential for breaking cryptographic algorithms also increases. This fact in modern cryptography creates a need for stronger and more advanced cryptographic algorithms. One development direction of modern cryptography is post-quantum cryptography, which can withstand the attacks of quantum computers. In addition to the potential threats to traditional cryptographic techniques, there is also the potential to integrate artificial intelligence tools with the process of developing and implementing cryptographic algorithms. For instance, advanced machine learning algorithms can be used to identify potential vulnerabilities in cryptographic systems and algorithms and improve their security. As technology continues to evolve, new techniques are being developed in the field of cryptography in order to stay one step ahead of new threats. In this paper, the current achievements of modern cryptography are explored and the research perspectives in this field are explained.
Performance characterization of secure IP communication systems for various interactivity level applications
Authors: Kašca Lara , Nešković Đorđe , Marković Marko , Stanković Stefan , Perić Miroslav
Published: October 2024

This paper describes a measurement methodology for characterizing the performance of secure communication systems, with a particular focus on the third layer of the OSI model (Layer 3). Special emphasis is placed on analyzing the impact of network characteristics such as delay and packet error rate on Quality of Service (QoS). The network environment is simulated using multiple routers and links, incorporating the mentioned network parameters that will be varied. We have presented impact on various types of interactive communications, such as VoIP audio data and video streaming. Special care is also taken on differences when using encryption method.
Sentinel-1 SAR interferometry for terrain monitoring: A case study of mine dynamics
Authors: Basarić Miloš , Jovanović Dušan
Published: October 2024

The use of SAR (Synthetic Aperture Radar) and InSAR (Interferometric SAR) technology is very useful for monitoring changes in soil topography in industrial locations such as the Veliki Krivelj open pit mine near Bor. By analysing Sentinel-1 satellite data from January to May 2024, subcentimeter terrain changes were revealed, associated with exploitation activities and dynamic processes in the mine environment. This paper illustrates the effectiveness of InSAR methods in the detection of geodynamic changes, highlighting the potential for sustainable resource management and monitoring of topographic changes in industrial locations.
The influence of design conditions on the failure of the universal cross joint (UCJ) of the cardan coupling
Authors: Spasenić Saša , Ristivojević Mileta , Milovanović Vladimir , Dimić Aleksandar , Dikić Stefan , Spasenić Sreten
Published: October 2024

In the system of power transmission from the driving to the operating machine, cardan couplings are components of vital importance. Due to the ability to transmit power over long distances, as well as insensitivity to the coaxiality of the connecting shafts, they have found wide application in all branches of mechanical engineering. In the plant for the production of profiled semi-finished steel products, a volumetric failure of the sleeve on the universal cross joint (UCJ) of the cardan coupling occured. This type of failure occurs very rarely with cardan couplings. In order to understand the real reason for the failure of the sleeve, analytical and numerical models were formed, and tests of materials and fracture surfaces were carried out. The influence of the line load distribution at the mating surfaces and the geometric stress concentration on the load capacity of the UCJ was analyzed using the developed models. With the increase in the unevenness of the line load distribution, the influence of tangential stresses on the stress state in the critical cross-section significantly increases. It is concluded that the simultaneous influence of the uneven line load distribution and the geometric stress concentration led to the failure of the UCJ sleeve.
Adsorption of organophosphate pesticides on nitrogen-doped carbon cryogels and the assessment of their neurotoxic effects
Authors: Anićijević Vladan , Tasić Tamara , Milanković Vedran , Jovanović Dalibor , Karkalić Radovan , Baljozović Miloš , Babić Biljana , Pašti Igor , Lazarević-Pašti Tamara
Published: October 2024

Efficient removal of different pollutants from the environment has become one of the most important challenges of modern society. The nitrogen-doped carbon cryogels were synthesized and characterized using XPS. All investigated materials have similar composition and structural disorder. By analyzing XPS spectra, the content of carbon, oxygen, and nitrogen can be obtained, and the existence of functional groups containing these elements can be detected. Dimethoate, malathion, and chlorpyrifos removal were investigated under stationary and dynamic conditions. Stationary conditions demonstrated successful removal of aliphatic dimethoate and malathion by all investigated materials. Conversely, the materials with the lowest and highest nitrogen content proved ineffective with aromatic chlorpyrifos. Under dynamic conditions, all materials effectively removed malathion and chlorpyrifos while exhibiting suboptimal performance for dimethoate adsorption. The demonstrated efficacy suggests the potential application of these materials in water treatment. The toxicity of these pesticide solutions decreases over time, indicating that more toxic products were not formed.
Determination of the temperature profile of selected mobile phone chargers as a safety factor in terms of thermal radiation
Authors: Tomić Ljubiša , Veselinović Saša , Simović-Pavlović Marina , Nestorović Katarina , Janković Darko , Vasiljević Darko
Published: October 2024

The surface temperatures of several commercial chargers for contemporary mobile phones with nominal power outputs from 10 W to 120 W were compared in this paper. Using a thermal imaging camera, the charger's surface temperature was recorded while it was connected to the main power source. To determine how the temperature on the charger's surface depended on the phone's charge level, an analysis of the thermograms that were captured was done. In this manner, the impact of the phone's charging speed on the charger's heating and, consequently, the safety factor concerning the charger's overheating, are ascertained. The battery charge range that was observed was 10% to 90%.
Influence of small arms ammunition on targets made of granular matter
Authors: Simović-Pavlović Marina , Obradović Vladimir , Janković Darko , Pagnacco Maja , Tomić Ljubiša , Vasiljević Darko
Published: October 2024

The behavior of granular matter under the impact of projectiles with varying calibers is examined in this work. Different granulations were used to make the samples - targets, which were then assembled differently. The samples were created using a variety of sand kinds with varying moisture contents and densities. Two cameras were used to investigate the behavior of the tested substrate following the projectile impact: a thermal camera and a highspeed camera. The state of the samples after the action was also reviewed. When it comes to evaluating the effects of a projectile striking a granular substrate as a target, these experiments may be of ballistic significance. Examining the granular materials' physical characteristics and their importance for use in the development of materials for the manufacture of military-grade protective materials is the main goal of the test.
Failure analysis of welded joint between rocket motor case and fins
Authors: Ćitić Aleksandar , Ilić Nada , Mladenović Maja , Pejović Vesna
Published: October 2024

In this paper a fractured welded joint between rocket motor case and fins was examined. The goal of this study was to determine the cause of fracture which occurred during high pressure probe. Specimens taken from the fractured surface were examined using scanning electron microscope. In order to determine material properties and welded joint quality, chemical analysis, microstructural examination, and microhardness measurements were performed. Macroscopic examination showed that initialization of fracture was on outer surface of the case. Observations of fracture surface using SEM revealed mixed mode of failure, lamellar cleavage, and ductile rupture, without visible plastic deformation. Spherical particles based on Fe and O were also seen on fracture surface. Microhardness measurements showed high difference in microhardness value between base material and heat affected zone (HAZ). Detailed analysis showed that inadequate preparation and welding procedure resulted with unsatisfactory microhardness distribution which led to fracture.
Examining fatigue of fiber reinforced polymer: A comprehensive review
Authors: Alsammarraie Amer , Slman Muraja
Published: October 2024

Since their introduction in the 1950s, composite materials have been extensively studied for their fatigue performance across various engineering fields. Numerous publications have documented experimental investigations into how these materials perform under different loading and environmental conditions. Fiber-reinforced polymer (FRP) composites are increasingly replacing metals due to their high strength and stiffness. These composites face various static and fatigue loads in service, necessitating fatigue tests to assess cyclic behavior. Unlike metals, where a single crack propagates to failure, composites exhibit complex fatigue damage with multiple micro-cracks forming early in the process. FRP composites serve as pivotal structural materials across diverse industries. Yet, before their incorporation into structures, meticulous testing of both test coupons and structurally representative samples is essential to evaluate their physical attributes, particularly their fatigue properties. Regrettably, the considerable expense entailed in fabricating coupons for these evaluations poses a notable hindrance to the extensive integration of fibre-reinforced polymer(FRP) into end products. The objective of this study is to forecast and simulate the fatigue lifespan of FRP composites. Extensive research in this domain will be outlined within this paper, encompassing diverse prediction methodologies employed to ascertain the fatigue endurance of these materials.
Schwannoma of scapula: Case report and literature review
Authors: Stevanović Stefan , Petrović Jovica , Milićević Aleksandar , Petrović Jelena , Đorđević Nikola , Nikolić Aleksandra
Published: October 2024

Introduction: Schwannomas are benign peripheral nerve tumors, more often localized in soft tissues than bones. Out of about 200 recorded cases of schwannoma of bone, only three cases of schwannoma of scapula have been described to date. Case report: We present the case of a 73-year-old female patient with an asymptomatic schwannoma of the scapula. Physical examination revealed a solid, fixed, well-defined walnut-size tumefaction in the right scapula area. CT of the chest confirmed a 2.33 x 0.96 cm diameter tumor at the junction of the upper-third and middle-third of the medial border of the right scapula. After reviewing the entire medical documenta tion, it was decided to proceed with surgical removal of the tumor. The surgery involved partial resection of the tumor-affected part of the scapula. Histopathological examination confirmed it was a schwannoma of bone. No clinical or radiological signs of disease recurrence were observed during the one-year follow-up. Conclusion: Schwannomas of bone are rare, slow-growing tumors. A definitive diagnosis is made based on histopathological and immunohistochemical findings. The main treatment modalities include curettage or "en bloc" resection. Recurrence is rare.
Efficacy of endoscopic vacuum therapy in esophageal luminal defects: a systematic review and meta-analysis
Authors: Vohra Ishaan , Gopakumar Harishankar , Sharma Neil R. , Puli Srinivas R.
Published: October 2024

Background/Aims: Endoscopic vacuum-assisted closure (EVAC) is a novel technique used to repair esophageal perforation and leaks. Varying data have been reported on the overall success rate of EVAC. We aimed to conduct a meta-analysis of the available data on the clinical success rate of EVAC.Methods: Electronic databases were searched for publications addressing the efficacy of EVAC in esophageal luminal defects. Pooling was conducted using both fixed and random-effects models. The overall clinical success of EVAC therapy was considered the primary outcome, whereas, overall complication rates, need for adjunct therapy, and mortality were considered secondary outcomes.Results: In total, 366 patients were included in the study. On pooled analysis, the mean age was 66 years with 68.32% of patients being men. Overall pooled clinical success rate of EVAC therapy was 87.95%. Upon subgroup analysis, the pooled clinical success rate of postsurgical anastomotic leak and transmural esophageal perforation were found to be 86.57% and 88.89%, respectively. The all-cause hospital mortality was 14% and 4.2% in patients with esophageal perforation and EVAC, respectively.Conclusions: This study demonstrates that EVAC therapy has a high overall clinical success rate, with low mortality. EVAC therapy seems to be a promising procedure with excellent outcomes in patients with luminal esophageal defects.
A Study of Selected Racialised Linguistic Experience among International Students in the United Kingdom
Authors: Badmus-Lawal Kareemah , Zakariyah Moshood
Published: October 2024

The presence of linguistic diversity in many societies is widely acknowledged, yet it is often linked to various social challenges that must be addressed. These challenges are increasingly causing concern, particularly based on the experiences of immigrants from linguistically diverse backgrounds in western societies. Given the noticeable lack of discussions on the experiences of linguistic diverse groups, this study aims to investigate the experiences of linguistic diverse immigrants in Scotland. The study utilises interviews to extract responses from three immigrant international students. The interview consisted of 6 carefully crafted open-ended questions, employing a qualitative analytical approach. In the data analysis, Piller's (2016) theory of linguistic diversity was utilised. The research findings indicate that all three participants have experienced instances of linguistic discrimination due to their diverse backgrounds. Although linguistic diversity is acknowledged globally, it often leads to inequality rather than equality, as demonstrated in this study. This is because language is always assessed in relation to the speaker's skin colour and idea that only the western society has a standard mastery of English language.
“Tinha a profissão de cantora”: o Conservatório de Música do Rio de Janeiro e a profissionalização feminina no meio sacro (1853-1873)
Authors: Albuquerque Clara Fernandes
Published: October 2024

O trabalho fazia parte do cotidiano de mais da metade das mulheres que viviam no Rio de Janeiro durante o século XIX. Esta pesquisa tem como objetivo principal analisar o impacto da criação das cadeiras de Rudimentos e Canto para o Sexo Feminino e de Canto do Conservatório de Música na formação e profissionalização de mulheres no meio sacro durante os anos de 1853 a 1873, além de compreender especificamente as suas redes de sociabilidades e sua ligação com entidades de classe. Tendo como referenciais Edward Thompson, Claude Dubar e Jean Sirinelli, utilizando como fontes periódicos da Hemeroteca Digital da Biblioteca Nacional, documentos institucionais, registros do site FamilySearch e estudos recentes, conclui-se que esta instituição promoveu formação profissional para mulheres de camadas menos favorecidas, propiciando que atuassem como cantoras em igrejas, ocupassem postos de liderança na Devoção de Santa Cecilia, desenvolvendo uma identidade profissional e pessoal, bem como relações de sociabilidades mediadas por princípios cristãos, obtendo, para além de sua subsistência, visibilidade e ascensão social.
COSTURANDO SABERES: EXPLORANDO A MATEMÁTICA ATRAVÉS DO CORTE E COSTURA NA UNIVERSIDADE DA MATURIDADE
Authors: Oliveira Cynthia Souza , Colling Ana Paula de Souza
Published: October 2024

AZEVÊDO, João; VIANA, Carla. Aprendizagem na velhice: um estudo sobre saúde cognitiva e participação social. Revista Brasileira de Geriatria, v. 12, n. 1, p. 55-68, 2021.

CARVALHO, Ana Maria; et al. Universidade da Maturidade: inclusão social e desenvolvimento de competências. Revista de Estudos Gerontológicos, v. 3, n. 2, p. 22-34, 2020.

CHÁCON, Inês María Gómez. Matemática emocional: os afetos na aprendizagem matemática. Porto Alegre: Artmed, 2003.

COMISSÃO EUROPEIA. Key competences for lifelong learning: European reference framework. Bruxelas: Comissão Europeia, 2019.

D'AMBROSIO, Ubiratan. Etnomatemática: elo entre as tradições e a modernidade. 2. ed. Belo Horizonte: Autêntica, 2005.

DAMASCENO, Maria; et al. Dificuldades no ensino de matemática entre jovens e idosos. Revista de Educação Matemática, v. 5, n. 1, p. 35-47, 2015.

ERICKSON, Frederick. Prefácio. In: COX, Maria Inês de Freitas Petrucci; ASSIS-PETERSON, Antônio Augusto de (orgs.). Cenas de sala de aula. Campinas: Mercado de Letras, 2001.

FREIRE, Paulo. Educação como prática da liberdade. 17. ed. Rio de Janeiro: Paz e Terra, 1986.

FREIRE, Paulo. Pedagogia do oprimido. 17. ed. Rio de Janeiro: Paz e Terra, 1987.

MANGUEIRA, Rômulo Tonyathy da Silva; SANTIAGO, Zélia Maria de Arruda. Matemática, idoso e cotidiano: memórias, saberes e práticas a capacidade de entender verdades escondidas. Curitiba: Appris Editora, 2019.

SCANDIUZZI, Pedro Paulo. A dinâmica de contagem de lahatua Otomo e suas implicações educacionais: uma pesquisa em etnomatemática. 1997. 216 f. Dissertação (Mestrado em Educação) – Faculdade de Educação, Universidade Estadual de Campinas, Campinas, 1997.
Pendampingan dan Pemberdayaan Kerupuk Singkong di Desa Tamboo Kecamatan Kabila Kabupaten Bone Bolango
Authors: Dunggio Swastiani , Sakir Mochamad , Bode Bode , Abdussamad Syahrir
Published: October 2024

Cassava crackers, a crunchy and savory snack that is a favorite of many people, have great potential to be developed into a promising business. Through mentoring and empowerment programs, cassava cracker business actors can improve product quality, expand markets, and increase community income, especially in Tamboo Village, Kabila Bone District, Bone Bolangao Regency. This assistance and empowerment of cassava crackers has a comprehensive aim of improving the quality of life of the actors and growing the local economy. Assistance can be provided in various forms, ranging from training in making cassava crackers using modern techniques, to assistance with marketing and branding. This training can include the use of quality raw materials, hygienic processing techniques, and proper packaging and storage. Empowerment is also important to help cassava cracker business actors to be more independent and able to compete in the market. As a result of this service, the community, especially partners as business actors, felt helped by the service activities in the form of KKNT carried out by students at Ichsan University, Gorontalo.
Kerupuk singkong, camilan renyah dan gurih yang menjadi favorit banyak orang, memiliki potensi besar untuk dikembangkan menjadi usaha yang menjanjikan. Melalui program pendampingan dan pemberdayaan, para pelaku usaha kerupuk singkong dapat meningkatkan kualitas produk, memperluas pasar, dan meningkatkan pendapatan khususnya masyarakat Desa Tamboo Kecamatan Kabila Bone Kabupaten Bone Bolangao. Pendampingan dan pemberdayaan kerupuk singkong ini memiliki tujuan yang komprehensif untuk meningkatkan kualitas hidup para pelaku usaha dan menumbuhkan ekonomi lokal. Pendampingan dapat diberikan dalam berbagai bentuk, mulai dari pelatihan pembuatan kerupuk singkong dengan teknik modern, hingga bantuan dalam hal pemasaran dan branding. Pelatihan tersebut dapat meliputi penggunaan bahan baku berkualitas, teknik pengolahan yang higienis, serta pengemasan dan penyimpanan yang tepat. Pemberdayaan juga penting untuk membantu para pelaku usaha kerupuk singkong agar lebih mandiri dan mampu bersaing di pasar. Hasil pengabdian ini, masyarakat khususnya mitra sebagai pelaku usaha terasa terbantukan dengan adanya kegiatan pengabdian dalam bentuk KKNT yang dilaksakan oleh mahasiswa Universitas Ichsan Gorontalo.
Football competition risk early warning method based on improved Copula model
Authors: Jixing Chen , Shengchao Xu
Published: October 2024

Aiming at the problems of large error between the warning value and the actual value and many false alarms in football matches, an intelligent warning method for football match risk based on the improved Copula model is proposed. The football match risk index evaluation system is determined based on the fuzzy comprehensive evaluation matrix, the index level state is divided, the Copula function is selected, and the improved Copula football match risk intelligent warning method is constructed to accurately judge the football match risk and reduce the risk loss. The experimental results show that the interference suppression of this method is maintained above 20 dB, and the interference suppression ratios of the existing methods are only 12.25 dB and 10.58 dB respectively. This method has high anti-interference ability and can effectively suppress interference. This method reduces the error between the warning value and the actual value, reduces the number of false alarms, and is practical and feasible.
Improved Gray Wolf Optimization for Carrier Aircraft Landing Scheduling Under Class One Mode with Multi-Objective Considerations
Authors: Yujie Liu , Wei Han , Xichao Su , Fang Guo
Published: October 2024

The carrier aircraft landing scheduling problem under Class one landing mode is studied, and a landing scheduling model is established with the optimization objectives of minimizing the weighted sum of landing delay time, and landing completion time. The effects of carrier aircraft battle damage degree and remaining fuel quantity are considered in the model. To reduce the burden of manual scheduling, an improved gray wolf optimization algorithm is proposed to optimally solve the scheduling model. On the basis of the gray wolf optimization algorithm, the improved algorithm chooses the historical optimal solution gray wolf individual as wolf, introduces chaos operator, and sets the control variable to control the updating of the algorithm parameter, to cope with the shortcomings of slow convergence in the late stage of optimization and possible falling into local optimal solutions. The effectiveness of the improved gray wolf optimization algorithm is verified through the simulation and comparison with different optimization algorithms. The algorithm outperforms the comparison algorithms in the landing scheduling cases with 30,60 and 90 aircraft, indicating that it has some engineering application value.
Aortic Valve Replacement Surgery Caused by IgG4-Related Aortic Regurgitation
Authors: Wang Yao , Wang Wei , Wu Hao , Xiu Yingjie , Xu Fei
Published: October 2024

While IgG4-related disease affects different organs, it is uncommon to associate it with the aortic valve. The clinical manifestations and prognosis of an uncommon IgG4-related aortic valve disease were examined by reporting it. After common activity, a 50-year-old man experienced shortness of breath and chest tightness. IgG4+ was expressed at a level of 4.23 g/L. The aortic valve had severe reflux, and the ascending aorta and aortic sinus were dilated, as evidenced by transesophageal echocardiography. Pathological results suggested that the ratio of IgG4+ cells to IgG+ cells was over 40%. Thus, the patient was diagnosed with aortic valve disease caused by IgG4+. Surgical treatment was executed. In clinical practice, IgG4-associated aortic regurgitation is uncommon and has the same clinical manifestations as general aortic valve disease. Nevertheless, there was a significant increase in serum IgG4+ levels. There was an association between the two. The pathology of valves can be proven.
The Role of Sports in Islamic Festivals and Its Relevance to Pluralistic Society: An Analysis from the Prophet Muhammed’s Tradition
Authors: Mohammed Ghous Mohammed Insaf  , Mohamed Ashath
Published: October 2024

The celebration of Islamic festivals, primarily Eid al-Fitr and Eid al-Adha, traditionally encompasses spiritual practices and communal activities, including sports that foster unity among Muslims and others. However, in contemporary times, the role of sports within these celebrations has diminished, leading to a disconnect from the holistic nature of these festivities as practised during the Prophet Muhammad's (PBUH) time. This paper explores the historical significance of sports in Islamic festivals, drawing upon the Prophet's (PBUH) traditions that emphasise physical activities as an integral part of celebratory events. In contrast, other religious traditions, such as the celebration of Buddha's birthday in Sri Lanka, maintain sports as a central feature of their festival celebrations, often involving diverse communities, including Muslims. This paper argues that reintroducing sports into Islamic festival celebrations can serve as a vital platform for intercultural and interfaith exchanges, enhancing mutual understanding in pluralistic societies. By analysing the potential of sports to bridge communities, this study highlights how such integration can contribute to a more inclusive and harmonious social fabric, aligning with the broader goals of interreligious engagement and cooperation.
Crítica de Calificación de los Delitos de Usurpación Agravada en un Distrito Fiscal del Perú
Authors: Castillo Mendoza Helsides Leandro
Published: October 2024

El presente libro titulado: Criterios para Denuncias en el Delito de Usurpación Agravada en un Distrito Fiscal del Perú, está orientado , entre otros aspectos a propiciar una discusión en el ámbito académico y social que permita ampliar los aspectos nocionales relacionados con el fenómeno de la Usurpación agravada, particularizada en la realidad de un Distrito Fiscal del Perú. De igual modo, aspira constituirse en un vaso comunicante que permita dar una mayor visibilidad de éste tipo penal en la realidad peruana. La usurpación como tipo penal, representa uno de los actos antijurídicos más habituales en algunas áreas geográficas del Perú. Téngase presente que éste delito - también denominado despojo- lesiona, atenta y vulnera el derecho real patrimonial de posesión de bienes inmuebles. Por consiguiente, la usurpación como acto antijurídico constituye un tipo penal que conculca el derecho al uso, goce y disfrute pacífico de la propiedad o dominio de un bien inmueble.
TreeSoft Set vs. HyperSoft Set and Fuzzy-Extensions of TreeSoft Sets
Authors: Smarandache Florentin
Published: October 2024

The TreeSoft Set is more general than the HyperSoft Set. The TreeSoft Set is a union of HyperSoft Sets. To distinguish between the levels of attributes, we use the comma notation i.e. an attribute of level k has k-1 commas in between its indexes.
Implementación de Sistema Solar Fotovoltaico: Evaluación de Sostenibilidad y Eficiencia Energética
Authors: Romero Paguay José Antonio , Sancho Aguilera David , Inca Guamán Andrés Vicente , Loján Carrión María del Cisne
Published: October 2024

La energía solar fotovoltaica (ESFV) se ha consolidado como una fuente de energía limpia y renovable, crucial para mitigar los efectos del cambio climático. En Europa, esta tecnología ha avanzado considerablemente, mientras que, en América Latina, y específicamente en Ecuador, su adopción ha sido más lenta, aunque el país posee un alto potencial solar debido a su ubicación geográfica. La Universidad Estatal Amazónica (UEA), ubicada en Puyo, enfrenta un creciente consumo energético, proyectado en 281,57 kW para el año 2025. Actualmente, la UEA depende de la red pública y generadores a base de combustibles fósiles, lo que subraya la necesidad de implementar un sistema fotovoltaico. Este estudio propone la instalación de 1210 paneles solares, distribuidos en un área de 2407,24 m² sobre las terrazas de los edificios del campus. Este sistema ON GRID cubrirá la demanda energética proyectada, contribuyendo a la sostenibilidad y reduciendo la huella de carbono de la institución. Además, se destaca la importancia de un diseño adecuado que considere la orientación, inclinación y la hora solar pico (HSP) para maximizar la eficiencia energética. Revisiones periódicas serán esenciales para ajustar el sistema a las necesidades futuras de la UEA, asegurando un suministro energético confiable y sostenible.
Introduction to Item Response Theory in R and IRTPRO
Authors:   The Herb Innovation Center - University of Toledo, Toland Michael , Dueber David
Published: October 2024

This seminar provides a comprehensive introduction to Item Response Theory (IRT), covering fundamental concepts, model specification, parameter estimation, and practical applications using R and IRTPRO. Participants will gain hands-on experience and theoretical knowledge to enhance the quality and precision of their research, with an official Instats certificate of completion provided at the end.
Foundations of Questionnaire Design
Authors: Schnitzlein Daniel
Published: October 2024

This comprehensive workshop is designed to equip researchers in the social and health sciences with essential techniques and best practices for crafting effective surveys. The workshop is targeted to researchers without prior knowledge of questionnaire design. Participants will learn how to create clear, unbiased, and reliable survey instruments that serve as the foundation for successful research.
Statistics in R with Tidyverse
Authors: Ismay Chester
Published: October 2024

This comprehensive seminar introduces participants to key concepts and practices in statistical inference using R, covering topics such as exploratory data analysis, regression analysis, confidence intervals, hypothesis testing, and more based on data science principles. Attendees will gain hands-on experience, enhancing their ability to manage and analyze complex datasets and effectively communicate their research findings.
Principles of Data Visualization
Authors: Schnitzlein Daniel
Published: October 2024

This seminar provides an essential introduction to the principles of data visualization for academic researchers and professionals. It focuses on understanding how to effectively communicate quantitative information through visual means, with an emphasis on audience-centric design. Attendees will learn how to select appropriate chart types, declutter visualizations, and enhance clarity, all without relying on a specific software tool. This course is designed to improve data storytelling and ensure that visual presentations of data are both accurate and compelling.
Operations, Finance, and Stock Market Performance (Free Seminar)
Authors: Zhao Yao
Published: October 2024

This seminar explores the interplay between operations, finance, and stock market performance. Participants will gain quantitative insights into how operational decisions impact financial outcomes and subsequently stock market movements, utilizing vast and free business and financial databases like SCDATA.AI for sophisticated data analysis and predictive analytics, and using recent examples like Amazon, Intel, Boeing and Tesla.
Building co-operative education at different steps of the co-operative journey: Lessons from Chile
Authors: Bertranou Dammert Matias
Published: October 2024

Throughout the world, different countries have had different levels of co-operative entrepreneurship and importance of co-operatives in their economies. Increasingly, we see that those countries where co-operatives have smaller support ecosystems belong to the Global South. This article focuses on the work of Mapocho, an organization in Chile concerned with developing the co-operative economy through a dual strategy of: (1) informal and formal education for young people and entrepreneurs outside of the co-operative movement and (2) the development, training, and support of existing co-operative and associative businesses and enterprises. I present the 'funnel framework' through which the dual strategy is born and the theory of change from which it was created. As a conclusion, the article proposes lessons and reflections around the framework, as well as recommendations for how to implement co-operative education and development in the Global South.
Progress in the role and mechanism of TDP-43
Authors: Li Rong-Bing
Published: October 2024

Background: TAR DNA-binding protein 43 kDa (TDP-43) has been shown to play an important role in the development of neurodegenerative diseases, but the mechanism is still under study. Methods: By utilizing “TDP43”, “disease”, and “mechanism” as the keywords, 200 related studies were retrieved and downloaded from Pubmed database, including 60 articles. We summarized the progress in understanding TDP-43 mechanism over the past two years, focusing on disease systems and classification of the upstream and downstream, including connection, improvement, and formation. Results: TDP-43, when abnormally aggregated, phosphorylated, or mislocalized, plays a key pathological role in neurodegenerative diseases. Additionally, its impact on normal reproductive cell formation, development, quantity, and activity, as well as insulin secretion and the activation of intestinal epithelial cell necrosis, should not be overlooked. Mechanistically, we identified a relationship between the expression of upstream factors, including Enterovirus D68 (EV-D68), Heterogeneous Nuclear Ribonucleoprotein D (HNRNPD or AUF1), Endoplasmic Reticulum Protein 57 (ERp57), and Progranulin (PGRN), and downstream factors such as Meiotic Recombination Protein Spo11 (Spo11), AMP-Activated Protein Kinase (AMPK), Double-Strand-Break Repair Protein Rad21 Homolog (Rad21L), IκB Kinase (IKK), and TDP-43. Conclusion: TDP-43 plays a pathological role in neurodegeneration, of which, the expression is related to phosphorylation, EV-d68, and HNRNPD.
Rhythms and Microbiomes: The Impact of Circadian Rhythms on Gut Microbiota Via The Vagus Nerve
Authors: Liu Shijun
Published: October 2024

The gut microbiota, which is as the "second largest gene" of human, is the microbial community within the gastrointestinal tract, The circadian rhythm is a 24-hour internal clock in nearly all organisms, associated with a wide range of physiological and psychological activities. It is found that there is a complex interaction and balance relationship between gut microbiota and circadian rhythm. The circadian disruption caused by unhealthy lifestyles is becoming increasingly prevalent in modern society, influencing the composition and diversity of the gut microbiota via the gut-brain axis. The vagus nerve, a pathway in the parasympathetic nervous system, is an important information regulation pathway for the crosstalk between the gut and the brain. This study investigated the impact of circadian rhythms on gut microbiota via the vagus nerve and set 3 specific aims. Firstly, the rhythmicity of the gut microbiota will be tested in normal and vagotomized mice, examining the vagus nerve in maintaining the impact of circadian rhythms on the rhythmicity of gut microbiota. Furthermore, the fecal samples from vagotomized mice will be transplanted into normal germ-free mice and vagotomized germ-free mice, thus testing the role of the vagus nerve in initiating the microbial rhythmicity regulated by the circadian cycle. Last but not least, mice will be divided into five groups of different light/dark cycles, each containing normal and vagotomized mice, measuring the specific changes in the composition and diversity of the gut microbiota caused by the circadian disturbances, and the role of gut microbiota in mediating these alterations.
Dietary Planning Research Based on Enumeration and Simulated Annealing Algorithms
Authors: Zhang Ke , Jiang Han , Huang Qi
Published: October 2024

With the development of society and the improvement of living standards, people are paying more and more attention to healthy eating, especially among college students. Scientifically designing daily recipes which is used to solve the problem of nutritional imbalance when balancing economic benefits has become an important research topic. This study evaluates and adjusts the dietary recipes of male and female college students. The study establishs optimization models with the goals of maximizing protein and amino acid scores, minimizing meal costs, and the both. It also quantifies the values, scores, and meal costs of each protein and amino acid, and constructs a goal programming model with daily energy and nutrient intake as constraints. Based on the principle of balanced dietary recipe optimization design, it constructs an optimization model for goal programming, and uses the enumeration method to solve the problem, construct a 0-1 vector ti, and use Matlab to solve for the typical value ti. It further uses simulated annealing algorithm to enumerate in this numerical direction to obtain the results, and evaluates the dietary nutrition of the daily diet.
Overview of Stem Cell Therapies in Immune System Disorders
Authors: Zhao Longfei
Published: October 2024

The advent of stem cell technology signifies a novel era in the field of medicine, providing revolutionary therapies for a range of diseases, including immune system disorders. Stem cells have a remarkable ability to regenerate and differentiate into many types of cells, which makes them highly promising for the repair of damaged tissues and organs. The objective of this study is to investigate the capacity of stem cell treatment in addressing immune system disorders. The article examines recent advancements and uses of several types of stem cells in regulating the immune response, restoring injured tissues, and offering long-term solutions for treating immunological-mediated diseases. The study encompasses an extensive examination of stem cell differentiation, immune system disorders, and in-depth case studies that showcase the achievements and difficulties encountered when utilizing stem cells to treat conditions such as rheumatoid arthritis, systemic lupus erythematosus, immune thrombocytopenia, and Crohn's disease. The paper also investigates the methods via which stem cells execute their therapeutic effects, including immune regulation and tissue restoration. The conclusion highlights the substantial advancements achieved in stem cell research and its auspicious prospects in personalized medicine and regenerative therapeutics.
The Pathogenesis and Surgical Nursing of Coronary Heart Disease (CHD)
Authors: Yan Ran
Published: October 2024

Coronary Heart Disease (CHD) stands as a significant global health concern, being the leading cause of mortality worldwide. This paper delves into the multifaceted aspects of CHD, exploring its pathogenesis, clinical manifestations, and treatment modalities, with a particular focus on coronary artery bypass graft (CABG) surgery. The pathogenesis of CHD is complex, involving factors such as atherosclerosis, cognitive dysfunction, cerebral small vessel disease, high platelet activation, and chronic inflammation. Clinical symptoms range from insidious presentations to acute coronary syndrome and sudden death. CABG, a pivotal intervention, is discussed extensively, covering preoperative assessments, intraoperative procedures, and postoperative care. Both on-pump and off-pump CABG techniques are examined in detail, highlighting their respective benefits and risks. Postoperative care involves meticulous monitoring and management to ensure optimal recovery. Additionally, strategies for the clinical enhancement of prevention are outlined, emphasizing lifestyle modifications and risk factor management. This comprehensive exploration aims to deepen understanding, stimulate further research, and guide clinical practice in combating CHD.