bluuebunny/crossref_metadata_2025 huggingface dataset:
Rayleigh damping influence on railway subgrade stability during seismic action
Authors: Merkur'ev Yuriy
Published: October 2024

Purpose: to consider the problem of railway subgrade stability under seismic conditions. Show the need to increase stability during an earthquake. Determine the possibility of increasing seismic resistance by introducing a damping layer into the structure. Determine the optimal damping parameters, taking into account the rational use of subgrade materials. Methods: calculations of embankment stability are carried out using the method of G. M. Shakhunyants. An earthquake is taken into account through an increase in shear forces acting on the cells of the sliding massif. The maximum accelerations of the compartments are determined based on the results of finite element method dynamic calculation of a stress-strain state of the embankment during an earthquake, which is specified through an accelerogram. Results: the effectiveness of using a damping layer in the embankment structure, introduced to increase seismic resistance, has been shown. The dependence of the stability coefficient of the embankment on the Rayleigh parameters of the material composing the body of the entire embankment has been determined. For the best material parameters, the optimal thickness and position of the damping layer in the structure are determined, at which the stability coefficient takes on a standard value and the volume of the damping layer is minimal. Practical importance: as an alternative to the normative approach, the possibility of increasing the stability of a railway embankment under earthquake conditions by introducing a damping layer into the structure is presented. An algorithm for selecting optimal damping parameters has been determined in order to increase seismic resistance.
POSTA SANATI ÇALIŞMALARINI SANAT FELSEFESİ AÇISINDAN BİR İNCELEME
Authors: Erdiren Yıldırım Onur
Published: October 2024

Posta sanatı, 20. yüzyılın ortalarında Fluxus ve Dada gibi hareketlerin etkisiyle ortaya çıkmıştır. Genellikle posta yoluyla gönderilen sanatsal çalışmaların bir türü olarak tanımlanır. Bu tür sanat eserleri, posta sistemini bir iletişim ve eser taşıma aracı olarak kullanarak yayılmış, genellikle alternatif sanat pratiğinin bir parçası olarak değerlendirilir. Posta sanatı, posta servisi aracılığıyla küçük ölçekli çalışmalar göndermeye odaklanan popülist bir sanat hareketidir. Sanatçının bir ifade aracı olarak kullandığı posta sanatı sanatçının yaratıcılığını geliştiren, kendisini farklı bir sanat türünde ifade etme olanağı sunan ve tüm özgürlük biçimlerini (ifade özgürlüğü, yaratma özgürlüğü, düşünce özgürlüğü, istenç özgürlüğü vb.) diğer sanat türlerinde olduğu gibi sergileyebilen bir sanat türüdür dolayısıyla sanatçı tüm özgünlüğüyle estetik algısını kullanarak bir posta sanatı yaratmaktadır çünkü herhangi bir sanat nesnesini yaratmak için estetik bir bakışa ihtiyaç vardır. Bu estetik ve sanatsal bakışı inceleyebilmek için teknik ve malzeme bilgisine ihtiyaç vardır. Posta sanatçıları genellikle basit ve ucuz malzemeler kullanır. Bunlar arasında kartpostallar, zarflar, pul, gazete parçaları, çıkartmalar ve el yapımı baskılar gibi materyaller bulunabilir. Çeşitli teknikler kullanarak, sanatçılar gönderileri üzerinde çizimler yapabilir, kolajlar oluşturabilir veya diğer yaratıcı teknikleri kullanabilirler. Bu bağlamda, Geçmişten günümüze kadar posta sanatında yapılan tasarımların estetik bakışının önemi vurgulanarak, çeşitli mecralarda yapılan ve sanatçıların yaptığı posta sanatı çalışmaları incelenerek tasarım ve estetik açıdan nasıl bakıldığı irdelenecektir. Aynı zamanda bu çalışmada bahsedilen sanat felsefesi çözümlemesinde yöntem olarak sanat epistemolojik bir inceleme olarak bakılmaktadır.
DIE ÜBERWINDUNG EINES KRIEGSTRAUMAS DURCH SCHREIBEN – EIN THERAPEUISCHES MODELL VON H. J. ORTHEIL?
Authors: Ayne Seval
Published: October 2024

Der Zweite Weltkrieg und seine Folgen dominierten lange Zeit die deutsche Literatur. In dem Roman „Der Stift und das Papier“ des Autors Hanns-Josef Ortheil werden ein Familien- und Kind-Trauma nach dem Zweiten Weltkrieg erzählt, das sich darin äußert, dass die Mutter nach dem Verlust von vier ihrer fünf Kinder nicht mehr spricht und sich auch das einzige Kind (der Autor des Romans), der den Krieg überlebt hat, ebenfalls in tiefes Schweigen hüllt. Im Roman wird das tägliche Familienleben in der Nachkriegszeit und die seltsamen Kommunikationsformen, die sich in der Familie bei der Mutter und dem Sohn entwickeln, dargestellt. Die Mutter kommuniziert innerhalb der Familie, indem sie das, was sie sagen möchte, auf Papier schreibt. Im Gegensatz zur Mutter kommuniziert allerdings der Sohn überhaupt nicht und hat jahrelang Schwierigkeiten, wenn er etwas sagen oder schreiben will oder soll. Die Eltern befürchten, dass der Junge nach Jahren des Schweigens nie richtig sprechen und schreiben lernen würde. Der Autor versetzt sich zurück in seine Kindheit und erzählt, wie er das Schreiben von seiner Familie, vor allem von seinem Vater, gelernt hat. Diese frühe Phase des der ersten Schreibversuche des Kindes wird vom Vater beschrieben und kommentiert. Dazu gehört auch, dass das Kind zunächst eine Verbindung zur Außenwelt herstellen musste, die bis dahin nicht existierte. Obwohl der „Schreibunterricht“ des Vaters keinem Lehrplan folgte, wirkte sich seine Herangehensweise positiv aus und das Kind lernt schrittweise Lesen und Schreiben. Die Familienkultur und die Rolle der Eltern werden im Roman besonders hervorgehoben. Es wird erzählt, wie sich die Familie als Teil der Gesellschaft nach dem Krieg veränderte. In diesem Zusammenhang werden die Beziehungen zwischen Vater, Mutter und Sohn beschrieben und untersucht.
The relativity of ontogenetic time on primate evolution and the emergence of language
Authors: Sampaio Thiago Oliveira da Motta , França Aniela Improta , Aquino Niasche Mendes Moraes de
Published: October 2024

Most reviews on primatology focus on the similarities between the species of Pan (chimpanzees and bonobos) and Homo (sapiens) genera. In this paper, however, we review the literature on heterochronic differences in ontogenetic development of species in order to raise a discussion about their behavioral differences, particularly in relation to the human communication system. A key concept discussed here is neoteny, which refers to the slowed rate of species development. Human biology exhibits high levels of neoteny, resulting in a prolonged period of development during the first decade of postnatal life. Human neoteny enables the brain to develop in conjunction with physical and social environments, emphasizing that biology and society should not be perceived as distinct perspectives of the same process, but rather as interdependent processes that collaborate for the normal development of human beings. In order to identify biological concepts that may have contributed to the emergence of language, throughout this paper we explore how neoteny can be a potential explanatory concept to some of the behavioral differences between species, and how this may relate to cognitive systems such as language acquisition in Homo sapiens.
Temporal interpretations of negation in Karitiana
Authors: Bassa Vanrell Maria del Mar , Vivanco Karin Camolese
Published: October 2024

In this paper, we investigate the behavior of the particle -ki in Karitiana, which acquires a meaning roughly similar to English ‘before’ when it appears in embedded clauses together with the adverbial suffix -t, but otherwise seems to behave as a negative particle in all other instances. Contrary to prior literature that analyzes -ki as a sort of aspectual marker in embedded clauses (cf. Rocha 2016 and Müller and Heleno 2023), we claim that -ki is still truly negation and has the same core meaning of a negative particle be it in matrix or embedded clauses, or adjectival constructions. The temporal meaning of -ki simply arises pragmatically as an implicature from the fact that the event denoted by the embedded clause has not (yet) occurred (as opposed to the event denoted from the matrix clause) and is though expected to occur, yet—even then—the later occurrence of the event is cancellable (which is a key difference from the default interpretation of a temporal clausal connective such as English ‘before’). This will allow to maintain a uniform analysis of the suffix -ki across all of its uses.
45 anos da Cadernos de Estudos Linguísticos
Authors: Tescari Neto Aquiles , Vivanco Karin , Morato Edwiges
Published: October 2024

Os editores da CEL — Karin Vivanco e Aquiles Tescari Neto — temos a satisfação de celebrarmos as “bodas de diamante” de nossa revista, entrevistando alguns ilustres colegas de nosso departamento (o DL), colegas esses que, ao longo desses 45 anos de nossa revista, dedicaram-se à importante tarefa de editor do periódico de nosso departamento. Hoje temos a satisfação de entrevistar a professora Edwiges Morato, que atuou como editora da revista nos anos de 2021 e 2022.
Gender in martial arts and combat sports
Authors: Turelli Fabiana , Kirk David , Vaz Alexandre Fernandez
Published: October 2024

Objective: In this paper, we offer a general picture of gender research in sport as a whole, in those specifically understood as masculine, and in martial arts and combat sports (MACS), until refining our scope and focus specifically on karate. Methodology: The Spanish women’s Olympic karate team was researched by us exactly when this MACS achieved the temporary condition of an Olympic sport, in Tokyo 2020 (2021). Results and discussion: We seek to provide a critical perspective on how karate practices and professional interventions require action to become more of an empowering tool/place than one where power is unfairly exerted over others with the excuse of hierarchies and tradition. Conclusion: We conclude the article envisioning and suggesting a few actions that could add to improve karate and broad MACS environments in the direction of more equitable, diverse and inclusive spaces and pedagogy through queering them.
Identity construction in telecollaborative activies
Authors: Schaefer Rodrigo , Heemann Christiane
Published: October 2024

O’Dowd (2018) defines telecollaboration as the use of online technologies in the context of language teaching and learning between students who are geographically dispersed. For Risager (2007), interaction between individuals from different cultures gives rise to cultural representations and, as Rodrigues (2013) puts it, such an interaction triggers the participants’ cultural identities. In this sense, this study sought to explore identity construction through cultural representations in telecollaborative activities. For the interpretative analysis, which was based on scholars such as Tajfel and Turner (1979), Woodward (2000), Salomão (2011) and Dervin (2014), data from telecollaborative sessions, a mediation session, an experience report, Facebook private messages and an interview were included. The outcomes revealed that the participants, through the telecollaborative activities, could highlight people’s characteristics according to specific social groups, in addition to having had an occasion to express dissatisfaction regarding particular issues.
A educação escolar como arte de governamento do desejo e da diferença
Authors: Santos Amarildo Inácio dos , Sá Maria Roseli Gomes Brito de , Raic Daniele Farias Freire
Published: October 2024

Esta pesquisa partiu de três objetivos: mapear enunciados sobre a relação entre diferença e educação escolar em documentos que a normatizam e/ou orientam; Analisar os enunciados mapeados e a formação discursiva que configuram; Problematizar a inserção e o uso biopolítico dessa formação discursiva nos currículos escolares contemporâneos. Para selecionar os documentos e mapear enunciados foi utilizada a cartografia. O corpus tem quarenta e oito documentos, internacionais e nacionais, relacionados à diferença e/ou à educação ou a ambas. Para as análises foi utilizada a arqueogenealogia. Os enunciados mapeados foram: Humano, Igualdade-Equidade, Tolerância, Diversidade-Diferença, Inclusão, Liberdade, Democracia, Cidadania e Educação escolar. Foram descritas oito condições de possibilidade de emergência destes enunciados: Pós-modernismo/Pós-modernidade, Fundação da ONU, Promulgação da Declaração Universal dos Direitos Humanos, Estado de bem-estar social (Keynesianismo), Lutas de movimentos sociais reivindicatórios e/ou contestatórios, Expansão e aceleração da globalização, Expansão do modelo de democracia liberal, Redemocratização do Brasil e promulgação da Constituição Federal de 1988. O Argumento é o de que está em curso, em nível global, a criação de uma arte de governamento do desejo e da diferença, pois, ao atravessar os currículos escolares a formação discursiva, configurada pelos enunciados mapeados, recalca o desejo sob subjetividades e reduz a diferença à diversidade, possibilitando o governamento simultâneo do desejo e da diferença via educação escolar.
Citizens of the Global South value urban green space: an example from Iran
Authors: Shadisheh Sahel Azizkhani , Shayesteh Kamran , Farmer Michael , Perry Gad
Published: October 2024

The unique social and physical structures of each city affect the quality of life of its residents. Urban green spaces (UGSs) provide many benefits for both human and nonhuman life. We investigated whether residents of Hamedan City, Iran, value UGSs and explored their specific preferences. Recognizing that urban planning decisions are often influenced by societal wishes, we hypothesized that residents would value UGSs and that willingness to pay (WTP), a measure of the significance of UGSs, would be correlated with individual socioeconomic status. We conducted a contingent valuation survey of 400 residents using the double-bounded dichotomous choice method and found that WTP was positively significantly correlated with both income and education levels. Respondents preferred green spaces distributed throughout the city and favored diverse land uses. The average WTP was $0.93 per person per month, totaling over $6.4 million annually. Principal component analysis identified four key predictors of WTP: economic status, geographic origin, gender, and aesthetic preference. Despite the average per capita monthly income in Iran being below $450, Iranians show an appreciation of UGSs, suggesting that citizens of other economically challenged countries would like to see greater investment in UGSs.
Note for the P versus NP problem (II)
Authors: Vega Frank
Published: October 2024

The P versus NP problem is a cornerstone of theoretical computer science, asking whether problems that are easy to check are also easy to solve. "Easy" here means solvable in polynomial time, where the computation time grows proportionally to the input size. While this problem's origins can be traced to John Nash's 1955 letter, its formalization is credited to Stephen Cook and Leonid Levin. Despite decades of research, a definitive answer remains elusive. Central to this question is the concept of NP-completeness. If even one NP-complete problem could be solved efficiently, it would imply that all problems in NP could be solved efficiently, proving P equals NP. This research proposes that EXACT CLOSURE, a notoriously difficult NP-complete problem, can be solved efficiently, thereby potentially establishing the equivalence of P and NP. This work is an expansion and refinement of the article "Note for the P versus NP problem", published in IPI Letters.
Intervention Model to Improve Community Knowledge, Attitudes, and Behavior on Ecotourism Accessibility for People with Disabilities
Authors: La Patilaiya Hairudin udin
Published: October 2024

This study aims to evaluate the impact of the Intervention Model on improving community knowledge, attitudes, and behavior related to ecotourism accessibility for people with disabilities in Ternate City, with a focus on addressing gaps in understanding and support through educational services and distribution of educational materials in the form of brochures with a participatory approach. The research design used a quasi-experiment involving 4,964 residents, where 287 participants were randomly selected through Cluster Random Sampling. Three tourist destinations were chosen as research locations, namely Sulamadaha Beach, Tolire Besar Lake, and Batu Angus Geotourism in Ternate City, North Maluku. The results showed that the intervention significantly improved community knowledge, attitudes, and behavior related to ecotourism accessibility, with a significance value (Sig. (2-tailed) of 0.000 <α = 0.05) indicating a significant difference between the experimental group and the control group after community-based interventions were carried out. In conclusion, this model has been proven effective in improving community knowledge, attitudes, and behavior towards ecotourism accessibility and can be used as a reference for similar programs in other locations to improve ecotourism accessibility globally.
Robust Soliton Crystal Generation
Authors: Moss David
Published: October 2024

The deterministic generation of robust soliton comb has significant meaning for the optical frequency combs to be widely used in various applications. As a novel form of microcomb, Soliton crystal holds the advantages of easy generation, high conversion efficiency, and excellent thermal robustness. Here, we report the turnkey deterministic generation of ‘Palm-like’ soliton crystal with a free-running scheme. The robustness of the turnkey soliton crystal generation is also investigated in multiple aspects, including the success rate, the thermal robustness, and the long-term stability. The experiment results reveal our turnkey soliton crystal can achieve nearly a 100% success rate with a power variation less than ±1.5 dB over one hundred trials of two samples, is insensitive to thermal effects, and is robust to the environment during four-hour laboratory time.
Enhancing AI Transparency for Human Understanding: A Comprehensive Review
Authors: Ara Malika
Published: October 2024

One of the most hotly debated topics in technology is the transparency between AI models and humans. As artificial intelligence (AI) continues to permeate various sectors, the demand for transparency in AI decision-making has become increasingly critical. This paper presents a comprehensive review of Explainable Artificial Intelligence (XAI), examining 57 key studies that focusing on various explanation approaches and their impact on the trust and accountability of end-users. Recognizing the obstacles resulting from the black-box nature of AI models, this work focuses on the need for the proper methods that can be used in the explanation process, enabling both people and AI models to work together. The findings highlight the importance of XAI in enhancing trust, particularly in complex environments such as healthcare and finance, and propose directions for future research to further develop reliable and interpretable AI solutions.
Extracorporeal Shock Waves Therapy (ESWT) vs Exercise in Thumb Osteoarthritis (SWEX-TO): Prospective Clinical Trial at 6 Months
Authors: Covelli Ilaria , De Giorgi Silvana , Di Lorenzo Antonio , Pavone Angelo , Salvato Fabrizio , Rifino Francesco , Moretti Biagio , Solarino Giuseppe , Notarnicola Angela
Published: October 2024

Background: Rhizarthrosis is the most frequent form of osteoarthritis and is responsible for pain, disability and reduced functionality. Recent studies support the possibility of providing Extracorporeal Shock Wave Treatment in patients suffering from osteoarthritis. Shock wave biostimulation may be able to modulate joint inflammation and stimulate chondorocytes in a reparative sense. The aim of the study is to investigate the clinical effects of shock wave treatment in patients suffering from arthritis of the first finger. Methods: A prospective clinical study was designed, in which seventy-two patients suffering from rhizoarthrosis were randomized to treatment with shock waves or exercises; in both groups an immobilization brace of the first finger was used. At recruitment and at 1, 3 and 6 months, patients received assessments of pain (VAS), functionality (FIHOA), disability (DASH); furthermore, the perception of improvement was monitored during follow-ups (Roles and Maudsley Score). Results: In both groups there was a significant improvement in all scores in the comparison between recruitment and 6 months; this improvement was confirmed for VAS, FIHOA and DASH in the comparison between individual time points in both groups, except for the comparison between 3 and 6 months for all scales in the exercise group and for FIHOA in both groups. The perception of improvement was statistically better in the shock wave group than in the exercise group at 1, 3 and 6 months. The regression analysis showed that the reduction of VAS and DASH are statistically influenced by shock wave treatment (p<0.001). Conclusions: Both shock waves and exercises, together with the use of the brace, are effective in managing pain, functionality and disability in patients suffering from arthritis of the first finger. The shock wave treatment ensured further improvement at 6 months
Importance of Modulating Kynurenine Metabolism—Approaches for the Treatment of Dementia
Authors: Baran Halina , Pietryja Marcelin Jan , Kepplinger Berthold
Published: October 2024

In this article we focus on kynurenic acid metabolism, a biochemical part of L-tryptophan catabolism, in processes related to memory and cognitive impairment and its subsequent relevance to neuropsychiatric disorders and the ageing process. Kynurenic acid is synthesised from L-kynurenine by kynurenine aminotransferases.Experimental pharmacological studies have shown that elevated levels of kynurenic acid in the brain are associated with impaired learning and that lowering kynurenic acid levels can improve these symptoms. The discovery of new compounds with the ability to block kynurenine aminotransferase opens up new therapeutic avenues against memory impairment and dementia. The newly developed Helix pomatia snail model of memory is being used for this pharmacological approach. In conclusion, diet, exercise and physical activity have a significant impact on the endogenous pharmacology of kynurenic acid and significantly modulate steady-state conditions and delay the events of the ageing process.
Thyroid Gland Diffuse Lipomatosis: A Case Study and Comprehensive Literature Review
Authors: Emmanouilidou Angeliki , Karanikas Michail , Pazaitou-Panayiotou Kalliopi , Michalopoulos Nickos
Published: October 2024

Diffuse lipomatosis of the thyroid (DLT) is a rare condition characterized by the infiltration of thyroid parenchyma with mature adipose cells, replacing normal follicular structure. Though uncommon, it often presents as neck swelling or compression symptoms such as dyspnea, dysphagia, and hoarseness, complicating diagnosis. This case study details a 61-year-old female patient with DLT, who presented with a multinodular goiter and progressive neck swelling, and reviews 53 additional cases from the literature. The review reveals that DLT is often misdiagnosed due to its overlapping features with other thyroid pathologies. The exact pathophysiological mechanism remains unclear, but hypotheses include tissue hypoxia, embryological malformations, or lipid metabolism disturbances. Surgical excision is the most common treatment, particularly for symptomatic patients, yielding positive long-term results. Future research should focus on clarifying DLT’s exact etiology and improving diagnostic accuracy, especially in differentiating it from other fat-infiltrated thyroid lesions such as amyloid goiter and adenolipomas. Enhanced understanding will guide better management strategies and improve patient outcomes in this rare yet significant thyroid disorder.
Research on Multi‐Objective Optimization Design of Traditional Soil Dwelling Renovation Based on AHPQFD‐ NSGA‐II: A Case Study of Tuyugou Village in Turpan, Xinjiang
Authors: Gou Weiqin , Saierjiang Halike , Shang Jingsu , Yang Mei , Zhang Tianyi
Published: October 2024

As the socio-economic landscape expands and tourism flourishes, the traditional earthen dwellings of Tuyugou Village, Turpan, Xinjiang, face significant challenges, including low energy efficiency and suboptimal living comfort, necessitating data-driven and scientifically robust renovation strategies. Existing renovation methods, however, often lack empirical support and rely heavily on subjective judgment from architects, thus hindering the effective preservation and transmission of cultural heritage. This research addresses the renovation of these traditional dwellings by employing the AHP method to systematically evaluate user requirements, with input from diverse stakeholders, including homeowners, tourists, experts, and government authorities. The study then applies the QFD method to construct a House of Quality, translating user needs into specific design attributes, followed by a comprehensive quantitative analysis for optimization. A novel multi-objective optimization model (MOP) is introduced, with materials as the central focus, addressing key aspects of engineering, culture, and energy conservation. The NSGA-II algorithm is utilized to generate optimal Pareto solutions. These solutions are further refined using the en-tropy-weighted VIKOR method, enabling objective decision-making that balances cultural preservation with contemporary needs, ultimately enhancing both living standards and tourism appeal. This study offers innovative renovation strategies for traditional dwellings in arid and semi-arid climates.
Antenna Tracker System for Unmanned Aerial Vehicles: A Short Review
Authors: Yusuf Hayyan , Rahutomo Faisal , Sutrisno Sutrisno
Published: October 2024

Unmanned Aerial Vehicle (UAV) is a modern technology used to perform difficult and dangerous aerial missions that cannot be carried out by manned aerial vehicles. Ground Control Station (GCS) is a system that manages all the parameters of the UAV. GCS and UAV communicate using radio waves through telemetry, which functions to transmit and receive flight data.  Antenna tracker is a device used to connect the GCS (Ground Control Station) and the UAV (Unmanned Aerial Vehicle). The antenna tracker works by performing tracking to direct the antenna towards the UAV. Nowadays, there are various forms of antennas used in telecommunication technology. Each type of antenna has its own radiation characteristics, some are directional, while others are more omnidirectional. Directional antennas are the right choice to be used with an antenna tracker. Generally, directional antennas have a narrow radiation range but a relatively long transmission distance. This paper provides a review of the state-of-the-art in antenna tracker technology for unmanned aerial vehicles (UAVs), with a focus on design, performance, and type of antenna. The study involved a literature search of various databases. The design approaches for antenna tracker systems range from simple single-axis trackers to sophisticated dual-axis trackers with pan-tilt mechanisms, and type of antenna such as helical were explored. The study concludes that antenna trackers have numerous applications in various industries, including military, agriculture, and surveying, and the demand for reliable and accurate antenna trackers is expected to continue to grow with the increasing popularity of UAVs. 

 

 

 
Yawing based IoT Monitoring System to Improve Horizontal Axis Wind Turbine Performance
Authors: Virdaus Alif Ilham , Sukriyandoko Ivan Abdhira , Muzaqih Aldi Fahli , Faizatama Alfido Marchandi , Adriyanto Feri
Published: October 2024

The diminishing availability of non-renewable energy resources such as coal, oil, and natural gas has prompted efforts to seek sustainable energy alternatives. One promising alternative is wind energy, which can be converted into electricity through wind turbines. However, Horizontal Axis Wind Turbines (HAWTs) have limitations in capturing wind from various directions, affecting operational efficiency. Therefore, this research attempts to address this issue through an innovation in yawing-based monitoring systems integrated with HAWTs and Internet of Things (IoT) technology. The yawing-based monitoring system is designed to monitor the performance of HAWTs in real time, including wind speed, rotations per minute (rpm), electrical current, and voltage. Data obtained from this monitoring system is used to identify potential damage to HAWTs, enabling timely preventive measures. Furthermore, this monitoring system can enhance the operational efficiency of HAWTs, reduce maintenance costs, and extend their lifespan. The results obtained from the comparison between the conventional system and the system with active yawing show a significant increase in power generated by the turbines equipped with the active yawing system. On average, turbines with the conventional system produce 213 watts of power, while turbines equipped with the active yawing system reach a power output of 296 watts. This represents a 39% increase in turbine efficiency, enhancing wind energy capture efficiency. These findings confirm that the integration of the active yawing system can optimally align the turbines with the incoming wind direction, thereby improving the overall system performance.
IoT with Firebase: Smart Ring Android App Using MAX30100 for Fatigue Detection
Authors: Venica Liptia , Irawan Elysa Nensy , Putri Dewi Indriati Hadi
Published: October 2024

IoT in healthcare enables real-time health monitoring & data evaluation of patient conditions. One of the benefits of IoT wearable devices is protecting a person from getting exhausted. Body fatigue is an indicator of the emergence of several problems such as sudden attacks of dangerous diseases, accidents, and so on. The large number of deaths from various diseases and accidents that are triggered by body fatigue makes monitoring the level of body fatigue important to minimize this. Through this research, we proposed the Smart Ring; a tool for monitoring and evaluating the level of body fatigue using a wearable sensor and based on the Internet of Things (IoT). In this article, we focus on developing the software component (Android application) and database management system of the Smart Ring IoT system. Age, heart rate, SpO2, and body temperature are used as indicators to determine user’s body condition categories. These data are collected through sensors on hardware part of Smart Ring System. The proposed database management system is able to store collected data inside NoSQL database in the form of documents. Smart Ring Android-based application is capable to monitor three user’s body condition and evaluate them to predict the user’s condition with classification accuracy of 100% within the defined categorization rules. It offers real-time user monitoring for exhaustion signs and triggering timely alerts with sub-2-second data processing under ideal conditions. The proposed Smart Ring system is expected to become an easy to develop, economical and portable medical device which help improve the welfare of society 5.0 in the health sector.
AR-NAVIS: Mobility Application for Blind and Deaf Students Based on Augmented Reality
Authors: Saputro Joko Slamet , Gunardi Gunardi , Anggarani Fadjri Kirana , Anastasya Najya , Setiabudi Reva , Ibrahim Sutrisno
Published: October 2024

Students with disabilities, especially those with visual and hearing impairments, face challenges in navigating through the campus environment. Hence, the development of AR-NAVIS as an Augmented Reality (AR)-based mobility orientation application stands as a significant innovation in providing services for them. This application aims to assist disabled students in moving within the campus environment, both indoors and outdoors. AR-NAVIS identifies the safest and most efficient routes, enabling disabled students to engage in independent activities and enhancing both their academic and non-academic performance. The application development process involves analyzing students' needs, prototype design, model validation, trials, and dissemination. Its features include AR-based 3D guidance, directional text, voice, vibration mode, and hazard information. The app is expected to provide accurate information about buildings or locations that are the destination for disabilities students. The result show that application development can guide disabilities user move between buildings smoothly. The experiment found that there was an increase in student activity after having this application.
Seminario Internacional Turismo i Paisatge
Authors: Suárez Chaparro Rosa H.
Published: October 2024

Como parte de las actividades del proyecto: “El valor del paisaje como recurso en la gestión turística de las Áreas Naturales Protegidas (ANP) de Chihuahua, México”, los días 11, 12 y 13 de abril se llevó a cabo el Seminario Internacional Turismo i Paisatge, cuya temática o línea de investigación se centró en el análisis y gestión del paisaje en espacios naturales.
Performance of High-Resolution, Acoustic Mapping Systems in a Fluid-Mud Environment : Testing the Effectiveness and Viability of High-Resolution, Hydrographic Survey Systems in a Fluid-Mud Environment
Authors: Wadman Heidi M. , Gaskin John B. , Jackson Anthony R.
Published: October 2024

This study explores the use of high-resolution acoustic mapping systems to penetrate fluid-mud layers by quantitatively relating depth with operating frequency. Prior to this study, multibeam surveys have proven be an effective method to elucidate the seafloor and collect bathymetric data on various bodies of water including rivers, lakes, bays, and the oceans. These techniques are regularly used on US Army Corps of Engineers dredged and federally maintained navigation channels. The objective of the study was to test the effectiveness of commercial off-the-shelf, low-frequency, high-resolution acoustic survey systems to penetrate fluid mud and if so, determine the density at penetration. The testing method combined multibeam echosounder, sub-bottom profiler, and single-beam echo sounder. In addition, in situ testing was conducted to determine the density of fluid-mud layers using a RheoTune profiler and laboratory testing. Results indicate that the use of currently available, bathymetric mapping systems operating at 90 kHz and higher are incapable of penetrating fluid mud in riverine and coastal shallow water conditions. This study demonstrates that while multibeam technology is effective at penetrating the water column, current frequencies available on the market are unable to penetrate fluid-mud layers in a riverine and shallow-water environment.
The Benkar Fault Zone: An Orogen-Scale Cross Fault in the Eastern Nepal Himalaya
Authors: Giri Bibek , Hubbard Mary , McDonald Christopher S. , Seifert Neil , KC Bishal
Published: October 2024

The Benkar Fault Zone (BFZ) is a recently recognized, NNE-striking, brittle to ductile, cross fault that cuts across the dominant metamorphic fabric of the Greater Himalayan Sequence (GHS) and the Lesser Himalayan Sequence (LHS) in eastern Nepal. 40Ar/39Ar-muscovite cooling ages along a transect across the BFZ in the GHS indicate movement younger than 12 Ma. To understand the mode of genesis, and seismo-tectonic implications of the BFZ, we mapped this fault from the Everest region in the upper Khumbu valley toward the south, across the Main Central Thrust, into the LHS and the Greater Himalayan Nappe. We recognize a series of cross faults segments, which we interpret the BFZ system. The currently mapped section of the BFZ is >100 km long, and its width is up to 4 km in the LHS. The BFZ is semi-ductile in the GHS region but is brittle in the south, where it is expressed as gouge zones, tectonically brecciated zones, sharp fault planes, and segments of nonpenetrative brittle deformation zones. From petrographic and kinematic analysis, we interpret largely a right-lateral, extensional sense of shear. Our work did not continue into the Sub-Himalaya, but the BFZ may continue through this zone into the foreland as documented in other Himalayan cross faults. While several genetic models have been proposed for cross faults in the Himalaya and other convergent orogens, we suggest that the BFZ may be related to extensional structures in Tibet. Understanding cross faults is not only important for the tectonic history of the Himalaya but due to the co-location of cross faults and seismogenic boundaries, there may be a causal relationship. Cross faults also follow many of the north-south river segments of the Himalaya and weakened fault rocks on the valley walls may enhance the landslide hazard in these areas.
Comprensión del tejido social comunitario y la identidad para la construcción de la marca territorio: caso El Chilcal, Bojacá, Colombia
Authors: Forero-Molina Sara Catalina , Garzón-Medina Carolina
Published: October 2024

Las marcas territoriales han venido convirtiéndose en un mecanismo que contribuye a la competitividad y el posicionamiento de los lugares, motivo por el cual el desarrollo de estas en el contexto rural reviste gran urgencia e importancia. El objetivo del artículo es comprender la conexión entre el tejido social comunitario y la identidad para la construcción de marca territorial en la vereda El Chilcal, Bojacá, Cundinamarca. La metodología se sustenta en la investigación cualitativa desde el abordaje del método hermenéutico y el interaccionismo simbólico, aplicándose un muestreo bola de nieve y contando con la participación de siete adultos mayores de la vereda. Los resultados dejan ver que hay una conexión entre la identidad y el tejido social comunitario, a través de un conjunto de representaciones simbólicas de los habitantes que se han enriquecido con sus experiencias de vida, valores transmitidos en familia y en comunidad, sumado a la valoración de los recursos naturales que definen el territorio, lo que sienta las bases para la construcción y gestión de una marca territorial, que permita visibilizar el patrimonio cultural y natural del que goza la vereda El Chilcal, atrayendo turistas y generando competitividad. A partir de estos hallazgos se realiza la propuesta de dimensiones de identidad de la marca de la vereda El Chilcal, con soporte en la propuesta del prisma de marca de Kapferer en el marco de perspectivas internas y externas.
A Study of Dimethyl Ether-Steam Coinjection Using a Large-Scale Physical Model
Authors: Amer Hassan , Sheng Kai , Okuno Ryosuke , Filstein Alex , French Matthew , Sanchez Javier O. , Al-Gawfi Abdullah , Nakutnyy Petro
Published: October 2024

Dimethyl ether (DME) as a water-soluble solvent has been studied as a potential additive to steam for improving the energy efficiency of steam-assisted gravity drainage (SAGD). The main objective of this research was to study in-situ flow characteristics and energy efficiency of DME-SAGD using a large-scale physical model. Results from DME-SAGD were compared with the control experiment of SAGD with no solvent injection using the same experimental setup. The main novelty of this research lies in the experimental data that demonstrated enhanced bitumen drainage by DME-SAGD in comparison with SAGD.

The experiment was conducted in a cylindrical pressure vessel with a diameter of 0.425 m and a length of 1.22 m, which contained a sandpack with a porosity of 0.34 and a permeability of 5.0 darcies. The DME-SAGD experiment used a DME concentration of 10 mol% and a steam coinjection rate of 27.6 cm3/min [cold-water equivalent (CWE)] at 3000 kPa. Temperature distributions within the sandpack, along with injection and production histories, were recorded during the experiment. Subsequently, numerical simulations were performed to history match the experimental data, and the calibrated simulation model was used to analyze the details of compositional flow characteristics.

Results showed that the 10 mol% DME-SAGD experiment yielded a recovery factor (RF) of 92.7% in 4.2 days, and the SAGD experiment yielded an RF of 68.6% in 6.0 days; for both experiments, the first 2 days were the preheating and the steam-only injection (SAGD) stages. The peak rate of bitumen production was 43.8 mL/min in the DME-SAGD experiment, which was more than twice greater than the peak rates observed in the SAGD experiment. The substantially increased rate of bitumen production resulted in a cumulative steam/oil ratio in DME-SAGD that was less than half of that in SAGD.

Analysis of experimental results indicated that the solubility of DME in the aqueous and oleic phases caused different flow characteristics between DME-SAGD and SAGD. For example, the oleic and aqueous phases were more uniformly distributed in the sandpack in the former. Simulations indicated that DME-SAGD had a greater distribution of grid-scale inverse mobility ratio and increased oleic-phase mobilities in comparison with SAGD.
Acquisition Study of Downhole Explosion Limit in Air Drilling
Authors: Li Hongtao , Li Yibo , Li Gao , Meng Yingfeng , Huang Wanni , Li Yongjie
Published: October 2024

Downhole explosions adversely affect air drilling; however, the explosion limit can facilitate the adjustment of the flow rate to prevent downhole explosions. The downhole explosion limit, comprising lower and upper limits, can be determined through diverse methodologies. In this study, the interrelation between absolute enthalpy and adiabatic flame temperature (AFT) enabled the deduction of the lower explosion limit (LEL) prediction method, and an equilibrium between heat generation and heat transfer formed the basis for the upper explosion limit (UEL) prediction method. Additionally, a variable-volume apparatus was established to measure the explosion limit and adjust the pressure precisely without changing the amount of gas. The explosion limit of methane in the air was determined using both predicted and experimental methods, mirroring the scenarios of natural gas entering the wellbore during air drilling. The theoretical model exhibited the same reliability as the experimental results, and the prediction method for the explosion limit proved more efficient. Moreover, the effects of initial temperature and pressure on the explosion limit are discussed. The LEL decreased by an average of 15.5% when the initial pressure increased from 0.1 MPa to 2 MPa, while the UEL experienced a significant increase by an average of 152%. The UEL exhibited a logarithmic dependence on the initial pressure. The effect of the initial temperature on the explosion limit was noticeably less pronounced than that of the initial pressure. This study provides the essential theoretical basis and experimental results for avoiding downhole explosions during air drilling.
Polyphenol Retention, Antioxidant Capacity, and Economic Importance of Spent Gin Botanicals
Authors: Umego Ekene Christopher , Barry-Ryan Catherine
Published: October 2024

Purpose
Gin ranks among the most widely consumed alcoholic beverages globally. It is produced by the flavouring of neutral alcohol with botanicals. Volatile organic compounds in botanicals give gin its flavours. The solid residue left at the end of gin distillation is the spent gin botanicals (SGB). SGB can be valorised as a bioresource for polyphenols. As a result, the study examined gin botanicals mix (GBM) and SGB to assess the impact of gin distillation on polyphenol retention and antioxidant capacity of SGB as well as its economic significance.
Methods
Samples of GBM and SGB were obtained from three gin distilleries in Ireland. The samples were prepared for extracting polyphenols and evaluating them using parameters optimised from a prior study, along with standard assay methods. The economic importance of SGB was assessed using data and information gathered from various industry reports and market research tools.
Results
The assays for polyphenol content and antioxidant capacity showed that the SGB samples retained up to 50% of their polyphenol content and antioxidant capacity post distillation through the various in-vitro assays used. The economic importance of SGB highlighted its market potential and this included utilisation in health and beauty products, functional foods and beverages, and food process technologies. Trends in polyphenols market together with the market outlook were identified.
Conclusion
There is a growing demand for natural and potent sources of polyphenols, and based on the findings of this study, SGB has demonstrated potential to be utilised as a valuable bioresource for polyphenols.
Analysis of the molecular mechanism endogenous hormone regulating axillary bud development in Pinus yunnanensis
Authors: Haihao He , Junfei Xu , Nianhui Cai , Yulan Xu
Published: October 2024

Background Pinus yunnanensis was a high-value economic forest species, the study of its axillary bud development was important for its improved breeding. Here, we studied the development of axillary buds of P. yunnanensis by decapitated, measuring the hormone levels of axillary and terminal buds, and performing transcriptomic analysis and qPCR verification. Result We found that decapitation can effectively promote the release of the axillary buds in P. yunnanensis. The content of cktokinins, auxins, gibberellins, and abscisic scids in its axillary buds were higher than that of apical buds. The largest difference was gibberellin, and only cktokinin was not significant.The transcriptome sequencing results were highly reproducible, and the trend graphs of the FPKM values of the 13 genes screened and the qPCR values showed high consistency. There were 2877 differentially expressed genes (DEGs) between axillary buds and terminal buds, and 18 candidate genes (CGs) involved in axillary bud release were screened out. There were 1171 DEGs in the three combinations of axillary bud growth, and 13 CGs regulating axillary bud growth were screened out. GO and KEGG enrichment analysis were performed on the differentially expressed genes between the two groups. Conclusions The results of experiments and discussions pointed out that the development of axillary buds of P. yunnanensis was mainly regulated by cytokinins, gibberellins, strigolactones and auxins, and their biosynthesis and regulatory genes were of great significance to the development of axillary buds. This study provides data support and research ideas for exploring the regulation of axillary bud development by endogenous hormones in P. yunnanensis.