bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Oxygen Content of Steam on the Steam Oxidation Behavior of Boiler Tube Materials
Authors: Nakagawa K. , Matsunaga Y. , Tanoue T. , Hayasaka T. , Matsumura K. , Takagi Y.
Published: March 2024

CWT (combined water treatment) was introduced in Japan in 1990 and over 50 power generation boilers are now in operation. However, the effect of oxygenated treatment on the steam oxidation of the ferritic-martensitic steels and austenitic stainless steels that are used for superheaters and reheaters is currently far from clear. In this study, laboratory tests were used to examine the effect of the oxygen level of the feed water on the scale growth and the scale exfoliation propensity of T91 ferritic-martensitic steel and 300-series austenitic stainless steels, as represented by TP316H and TP347H (coarse- and fine-grained, respectively). The oxygen level of the feed water had little effect on the steam oxidation rates of all the steels tested. Hematite (Fe2O3) formed in the outer layer of the oxide scales on both the ferritic and austenitic steels and is considered to have been encouraged in the simulated CWT atmosphere. The adhesion strength of the oxide scale formed on T91 in the simulated CWT atmosphere, that is, scale in which hematite was present, was lower than that of the oxide scale formed in the simulated AVT (all volatile treatment) atmosphere. The oxidation rate of fine-grained TP347H was confirmed to be slower than that of coarse-grained TP316H. Hematite significantly influenced the scale exfoliation of the austenitic steels and the critical oxide thickness for exfoliation decreased with increasing proportion of hematite in the outer scale.
Comparison of Coal-Ash Corrosion Resistance of Alloys Exposed to Advanced Air-Coal and Oxy-Coal Combustion Environments
Authors: Kung Steven C.
Published: March 2024

A combined pilot-scale combustion test and long-term laboratory study investigated the impact of oxy-firing on corrosion in coal-fired boilers. Four coals were burned under both air and oxy-firing conditions with identical heat input, with oxy-firing using flue gas recirculation unlike air-firing. Despite higher SO2 and HCl concentrations in oxy-firing, laboratory tests showed no increase in corrosion rates compared to air-firing. This is attributed to several factors: (1) Reduced diffusion: High CO2 in oxy-firing densified the gas phase, leading to slower diffusion of corrosive species within the deposit. (2) Lower initial sulfate: Oxy-fired deposits initially contained less sulfate, a key hot corrosion culprit, due to the presence of carbonate. (3) Reduced basicity: CO2 and HCl reduced the basicity of sulfate melts, leading to decreased dissolution of metal oxides and mitigating hot corrosion. (4) Limited carbonate/chloride formation: The formation of less corrosive carbonate and chloride solutes was restricted by low O2 and SO3 near the metal surface. These findings suggest that oxy-firing may not pose a greater corrosion risk than air-firing for boiler materials.
Fireside Corrosion and Carburization of Superheater Materials in Simulated Oxyfuel Combustion Conditions
Authors: Tuurna Satu , Pohjanne Pekka , Yli-Olli Sanni , Coda Edgardo , Vänskä Kyösti
Published: March 2024

Oxyfuel combustion is considered as one of the most promising technologies to facilitate CO2 capture from flue gases. In oxyfuel combustion, the fuel is burned in a mixture of oxygen and recirculated flue gas. Flue gas recirculation increases the levels of fireside CO2, SO2, Cl and moisture, and thus promotes fouling and corrosion. In this paper the corrosion performance of two superheater austenitic stainless steels (UNS S34710 and S31035) and one Ni base alloy (UNS N06617) has been determined in laboratory tests under simulated oxyfuel conditions with and without a synthetic carbonate based deposits (CaCO3 - 15 wt% CaSO4, CaCO3 - 14wt% CaSO4 - 1 KCl) at 650 and 720°C up to 1000 hours. No carburization of the metal substrate was observed after exposure to simulated oxyfuel gas atmospheres without deposit, although some carbon enrichment was detected near the oxide metal interface. At 720°C a very thin oxide formed on all alloy surfaces while the weight changes were negative. This negative weight change observed is due to chromium evaporation in the moist testing condition. At the presence of deposits, corrosion accelerated and considerable metal loss of austenitic alloys was observed at 720°C. In addition, clear carburization of austenitic steel UNS S34710 occurred.
Evaluation of Creep Rupture Strength in Ni-Based Alloy Weldments for an Advanced USC Boiler
Authors: Komai Nobuyoshi , Saito Nobuhiko , Takei Yasuhiro
Published: March 2024

A Japanese national project has been undertaken since Aug. 2008 with the objective of developing an advanced ultra-supercritical power plant (A-USC) with a steam temperature of 700°C. Fe-Ni and Ni-based alloys, namely HR6W, HR35, Alloy617, Alloy740, Alloy263 and Alloy141, were taken as candidate materials for piping and superheater/reheater tubes in an A-USC boiler. Weldments of these alloys were manufactured by GTAW, after which long term creep rupture tests were conducted at 700°C, 750°C and 800°C. Weldments of HR6W, HR35 and Alloy617 showed similar creep strength as compared with these base metals. Weldments of Alloy740 tended to fail in the HAZ, and it is considered that voids and cracks preferentially formed in the small precipitation zone along the grain boundary in the HAZ. The creep strength of Alloy263 in weldments exhibited the highest level among all the alloys, although HAZ failure occurred in the low stress test condition. A weld strength reduction factor will be needed to avoid HAZ failure in Alloy740 and Alloy263. Also, to prevent premature failure in weld metal, optimization of the chemical composition of weld filler materials will be required.
Development of Welding and Fabrication Technologies in Advanced USC Boiler
Authors: Kubushirio Keiji , Matsuoka Takaaki , Ohkuma Yoshitomo , Nakagawa Hirokatsu , Aoki Hiroshi
Published: March 2024

Welding processes and fabrication techniques have been studied in the development of Advanced USC boilers. Advanced 9Cr steels, Fe-Ni alloy (HR6W) and Nickel base alloys (HR35, Alloy 617, Alloy 263, Alloy 740 and Alloy 740H) have been selected as candidate materials for the boiler. The weld joints of these alloys were prepared from plates, small diameter tubes and large pipes, and welding procedure tests were performed. In this study, TIG and SMAW were applied. Both welding process produced good weld joints, and they showed good results in bending tests, tensile tests and the Charpy impact test. To select the annealing conditions for stress relief, stress relaxation tests and hardness tests were conducted on the weld joints after various heat treatments. The microstructure was also evaluated by SEM and TEM. Creep rupture tests are being performed for the weld joints with and without heat treatment. The maximum creep rupture tests are expected to take over 100,000 hours. In the study of fabrication techniques, hot bending tests by high frequency induction heating for large pipes and cold/hot bending tests for small diameter tubes were established. After the bending tests, mechanical property tests such as tensile tests, impact tests and creep rupture tests were conducted. The effect of pre-strain on creep strength was studied to take the creep test results after bending into consideration. The creep rupture test will be continued for specimens from weld joints and bending pipes to show their long term reliability.
Role of Half Yield on Creep Life Prediction of Creep Strength Enhanced Ferritic Steels
Authors: Kimura Kazuhiro
Published: March 2024

Inflection is observed at 50% of 0.2% offset yield stress, that is HALF YIELD, on the relation between stress and creep rupture life of creep strength enhanced ferritic steels with tempered martensitic microstructure. Similar shape is generally recognized on the ferritic steels with martensitic or bainitic microstructure, in contrast to ferritic steels with ferrite and pearlite microstructure, as well as austenitic steels and superalloys except for several alloys. Ferritic steel with martensitic or bainitic microstructure indicates softening during creep exposure, however, hardening due to precipitation takes place in the ferritic steels with ferrite and pearlite microstructure and austenitic steels. This difference in microstructural evolution is associated with indication of inflection at half yield. Stress range of half yield in the stress vs. creep life diagram of creep strength enhanced ferritic steels is wider than that of conventional ferritic creep resistant steels with martensitic or bainitic microstructure. As a result of wide stress range of boundary condition, risk of overestimation of long-term creep rupture strength by extrapolating the data in the high-stress regime to the low-stress regime is considered to be high for creep strength enhanced ferritic steels.
In-Situ Full Field Creep Deformation Study of Creep Resistant Materials Welds
Authors: Yu Xinghua , Feng Zhili , Yamamoto Yukinori
Published: March 2024

The current study proposed a new method that utilizes digital image correlation (DIC) techniques to measure in-situ full field strain maps of creep resistant material welds. The stress-rupture test is performed in a Gleeble thermal mechanical simulator. This technique successfully captured a significant difference in the local creep deformation between two Grade 91 steel welds with different pre-welding conditions (standard and non-standard). Strain contour plots exhibited inhomogeneous deformation in the weldments, especially at the heat-affected zone (HAZ). Standard heat-treated specimens had significant creep deformation in the HAZ. On the other hand, non-standard heat treated specimens showed HAZ local strains to be 4.5 times less than that of the standard condition, after a 90-hour creep test at 650°C and 70 MPa. The present study measured the full field strain evolution in the weldments during creep deformation for the first time. The proposed method demonstrated a potential advantage to evaluate local creep deformation in the weldments of any creep resistant material within relatively short periods of time.
Klasik Şiirde Cinsiyet Temelli Bir İnceleme: Nedim Divanı Örneği
Authors: OKTAY Adnan
Published: March 2024

Eski Türk edebiyatında sevgilinin cinsiyeti merkezli tartışma bir süreden beridir devam etmektedir. Bu tartışmanın temelinde sevgilinin cinsiyetinin belirsizliği yer almaktadır. Allah, peygamber, sultan, paşa, yönetici, şeyh, mürşit, âlim gibi çeşitli anlam katmanlarında işlenmesi, sevgilinin cinsiyetinin belirlenmesini zorlaştırmaktadır. Tabii olarak sevgilinin erkek ya da kadın olması hususunda bir sonuca varmak güçleşmiştir. Klasik şiirde bazen şairin ya da âşığın erkek olmasına rağmen kadın; kadın olmasına rağmen erkek cinsiyetini tercih etmesi, bu dönem edebiyatında eşcinsel yaklaşımların varlığını akla getirmiştir.

Bu çalışmada geleneğin belirlediği estetik anlayış çerçevesinde şiirin ana karakterlerinden biri olan sevgilinin cinsiyeti, Nedîm Dîvân’ı merkeze alınarak incelenmiştir. Çalışma yapılırken belge tarama, karşılaştırma, araştırma ve analiz yöntemleri kullanılmıştır. Sonuç itibariyle Nedîm Dîvân’ında sevgili, klasik şiir geleneği çerçevesinde işlenmiş; ancak eserde yer yer eşcinsel çağrışımların izlerine de rastlanmıştır.
Patriotic Education of Children's Music School Students in the Process of Studying Compositions for Kobza
Authors: Poluboiaryna Iryna
Published: March 2024

The article substantiates the relevance of the problem of the formation of patriotism among students of children's music schools by means of epic musical works for kobza. The purpose of the article is to consider the educational work of patriotic orientation in the educational process of a children's music school, to determine the purpose, tasks, forms and methods, pedagogical conditions of patriotic education. Research methods. The following research methods are used to realize the defined goal: theoretical (analysis of scientific literature, synthesis, generalization, classification); empirical (observation, survey, study and analysis of educational and methodical documentation, plans of educational work). Results. The main task of the modern Ukrainian art school is determined, which consists in solving the important problem of implementing the value foundations of children's musical education. The definition of the concept of "Kobzarstvo" is given, which is characterized by a patriotic and civic orientation, an orientation towards the performance of author's and folk highly spiritual epic works, thoughts. It was determined that it is at school age that it is most appropriate to attract students to patriotism through the study of the highly artistic Ukrainian musical repertoire for kobza. It has been proven that the main goal of the process of patriotic education is the moral and psychological preparation of children to protect the Motherland and serve it. It is shown that studying the musical repertoire for kobza contributes both to the formation of patriotic concepts and to the improvement of students' interests and ideals. Conclusions. Therefore, the current task of Ukrainian children's musical education is the acquisition of knowledge of folk folklore, the desire to defend one's ideals, an active life position, and participation in the life of Ukrainian society. Pedagogical conditions for patriotic education of children's music schools students are substantiated: filling the educational process of children's music school with patriotic content through the use of highly artistic epic thoughts of Ukrainian professional composers and amateurs in kobza lessons; using the particular forms of extracurricular work (participation in creative competitions, Olympiads of various levels, volunteer activities, educational work in the city and region, which contributes to the development of the intellect and emotions of school pupils) in the educational process; ensuring patriotic upbringing of children in the family; introducing the elements of digitalization into the educational process of a music school with the aim of forming socially significant behaviour in a child and understanding its significance.
Vocational and Pedagogical Training of Future Bachelors in the Field of Transport at the Pedagogical Institutions of Higher Education under Modern Social and Economic Conditions
Authors: Fedoreiko Iryna , Horbatiuk Roman
Published: March 2024

Intensive changes in social and economic conditions related to the development of labor markets and labor force require changes in the quality of training of specialists who possess not only special knowledge, but also certain qualities that ensure their competitiveness and professional mobility. This actualized the issue of modernizing the modern vocational and pedagogical education as a system of training teachers of vocational training, in particular, bachelors in the field of transport. The purpose of article is to analyse the theoretical and practical aspects of vocational and pedagogical training of future bachelors in the field of transport at the pedagogical institutions of higher education. Methods of research are analysis, systematization, observation and generalization. Results. It has been established that the vocational and pedagogical education of future bachelors in the field of transport is a special type of higher education, which is significantly different from the sectoral (engineering and technical, agricultural, economic) and actually pedagogical and is carried out in the system of vocational and pedagogical education. The specificity of vocational and pedagogical education consists in the training of staff for the implementation of educational programs of a professional orientation in the vocational education institutions of the I – II levels of accreditation. Conclusions. The key idea of integration and psychological and pedagogical training for the vocational and pedagogical education gives a possibility to prepare a professionally mobile specialist with the necessary qualifications. It is extremely important not to allow the priority of sectoral or pedagogical components in the content of vocational and pedagogical education, since both components are equivalents. In the near perspective of key tasks of vocational and pedagogical training are the implementation of integrated training of future bachelors in the field of transport; additional psychological and pedagogical training of graduates of specialized institutions of higher education or additional specialized training of graduates who have completed their studies in pedagogical institutions of higher education. We see further scientific studies in forecasting and projecting the development of the system of vocational and pedagogical education.
КЛІНІЧНЕ ЗАСТОСУВАННЯ АДАПТУЮЧОЇ КОМПОЗИЦІЇ ДЛЯ ПОЛІПШЕННЯ БІОСУМІСНОСТІ СИНТЕТИЧНИХ ПОВЕРХОНЬ І БІОЛОГІЧНИХ ІМПЛАНТІВ
Authors: Черній В.І. , Литвак О.О. , Лисенко Б.М. , Собанська Л.О. , Лазаренко О.М. , Алексєєва Т.А.
Published: March 2024

У цій монографії наведено результати технологій поліпшення біосумісності синтетичних і біологічних матеріалів в різних медичних галузях (травматологія, кардіохірургія, гінекологія) завдяки методу використання аутоальбуміну пацієнта, що дозволяє поліпшити біологічну сумісність вже відомих і апробованих матеріалів. Монографія призначена для лікарів-інтернів, лікарів-хірургів, лікарів-гінекологів, лікарів-анестезіологів, лікарів-травматологів ортопедів та лікарів суміжних спеціальностей.
The effect of social laziness and the means to overcome it in a martial law
Authors: Shved Vadym , Sarancha Iryna
Published: March 2024

The article considers the effect of social laziness, which is the increase in the number of groups leading to a decrease in the individual productivity of its participants. The authors analyze the features of this effect manifestation among students of higher education institutions. Under "normal" conditions, group study has several advantages, including communication, socialization, acquiring skills of working in groups, etc. However, the effect of social laziness can lead to negative consequences such as a loss of interest in education, a decline in academic performance, a complete loss of motivation to study.Based on the analysis of scientific literature and their own research, the authors of the article suggest a number of means to prevent and overcome the effect of social laziness among students. The means include actualizing individuality and enhancing identification; solving the problem of the freeloaders; qualitative target setting; systematic engagement.In the context of remote study, characterized by asynchrony, time discontinuity and unstable social ties, these means lose their effectiveness. The authors of the article suggest developing new means that take into account the peculiarities of remote study.The means suggested by the students include formalization of group relations; promoting group socialization; group work; establishing clear identity of the individual; adopting project-based approach. In conclusion, the authors of the article state that the effect of social laziness in the conditions of the war has acquired new features and requires an updated means to overcome it.
Evaluasi Kualitas Radiograf Periapikal Teknik Bisektris : Kesalahan Penempatan Sudut Penyinaran dan Film
Authors: Suparno Nilasary Rochmanita , Faizah Ariyani , Zahra Haditsa Aulia
Published: March 2024

Background: The bisecting angle technique of periapical radiography is more often used in dental practice because the technique is practically adjustable and the patient's ability to adapt is better. Radiograph results are influenced by operator and patient factors, so management that is not optimal can cause a decrease in the quality of the radiograph, which affects interpretation, diagnosis, and treatment planning. The study aimed to determine the quality and frequency of errors in periapical radiographs using the bisecting technique due to errors in X-ray angulation and film placement at the Soelastri Dental and Oral Hospital (RSGM), University of Muhammadiyah Surakarta (UMS).Methods: The type of research is descriptive observational quantitative research with a retrospective approach. A total of 300 bisecting technique periapical radiographs from patients at RSGM Soelastri UMS in January–December 2021 who met the inclusion and exclusion criteria were taken in random stratification and evaluated. Radiographs are compared to ideal quality and given a National Radiological Protection Board (NRPB) rating, as well as looking at the frequency of errors that occur.Results: The rating most often obtained on periapical radiographs using the bisecting technique in the study was 2 for 181 radiographs (60.33%). The frequency of X-ray angulation errors was 62.94%, while the frequency of film placement errors was 37.06%. The highest error in X-ray angulation was cone cutting at 49.13%, while the error in film placement was in the form of apical cuts at 25.65%.Conclusions: The quality of periapical radiographs using the bisecting technique at the Radiology Installation at RSGM Soelastri UMS in the period January to December 2021 generally has a rating of 2 (diagnostically acceptable) according to the NRPB, and errors are still found in the angulation of the X-ray tube and film placement.
Informasi Anatomi MSCT Sinus Paranasal pada Suspek Sinusitis dengan Variasi Rekonstruksi Algorithma
Authors: Mulyati Sri , Wibowo Gatot Murti , Ardiyanto Jeffri , Ummah Sylvia Ishlahul
Published: March 2024

Background: The standard operating procedure with the bone window technique and bone reconstruction algorithm is referred to the MSCT protocol for paranasal sinuses in Hospital. However, the majority of radiologists select a protocol that implements the algorithm reconstruction, which is still trial and error without an organized protocol development study. There is a chance that the accuracy of the MSCT SPN and the quality of the picture data may become crucial problems. This study set out to assess and examine the algorithmic reconstruction method that can yield more accurate SPN anatomical data in sinusitis suspects.Methods: A quasi-experimental technique was taken in conducting the research. Three filters (bone, boneplus, and edge) of the reconstruction method were used to get thirty SPN images from ten patients. The images were  assessed by the two expert radiologist.Results: The results of non-parametric was obtained based on statistical tests using the  Friedman test ρ-value  of anatomy, namely 0.00 less than 0.05. These results indicate that H0 is rejected and Ha is accepted,  meaning that there are differences in anatomical information between variations of bone, boneplus, and  edge reconstruction algorithms on the MSCT scan examination of the paranasal sinuses with sinusitis suspect. The Friedman test results using the mean rank values of each anatomy show that Boneplus is  superior in terms of visualizing anatomy. The Friedman test's mean rank value of the entire anatomy  yielded the result that the boneplus reconstruction algorithm is superior to the bone and edge reconstruction algorithm in displaying anatomical information on the MSCT scan of the paranasal  sinuses with sinusitis suspect.Conclusions: Based on value mean rank For each Friedman test anatomy and the results of the frequency distribution, variations of the bone plus reconstruction algorithm are more optimal in displaying anatomical information on the MSCT Scan of the paranasal sinuses compared with the edge and bone reconstruction algorithms.
Cross-genre argument mining: Can language models automatically fill in missing discourse markers?
Authors: Rocha Gil , Lopes Cardoso Henrique , Belouadi Jonas , Eger Steffen
Published: March 2024

Available corpora for Argument Mining differ along several axes, and one of the key differences is the presence (or absence) of discourse markers to signal argumentative content. Exploring effective ways to use discourse markers has received wide attention in various discourse parsing tasks, from which it is well-known that discourse markers are strong indicators of discourse relations. To improve the robustness of Argument Mining systems across different genres, we propose to automatically augment a given text with discourse markers such that all relations are explicitly signaled. Our analysis unveils that popular language models taken out-of-the-box fail on this task; however, when fine-tuned on a new heterogeneous dataset that we construct (including synthetic and real examples), they perform considerably better. We demonstrate the impact of our approach on an Argument Mining downstream task, evaluated on different corpora, showing that language models can be trained to automatically fill in discourse markers across different corpora, improving the performance of a downstream model in some, but not all, cases. Our proposed approach can further be employed as an assistant tool for better discourse understanding.
Tractable algorithms for strong admissibility
Authors: Caminada Martin , Harikrishnan Sri
Published: March 2024

Much like admissibility is the key concept underlying preferred semantics, strong admissibility is the key concept underlying grounded semantics, as membership of a strongly admissible set is sufficient to show membership of the grounded extension. As such, strongly admissible sets and labellings can be used as an explanation of membership of the grounded extension, as is for instance done in some of the proof procedures for grounded semantics. In the current paper, we present two polynomial algorithms for constructing relatively small strongly admissible labellings, with associated min–max numberings, for a particular argument. These labellings can be used as relatively small explanations for the argument’s membership of the grounded extension. Although our algorithms are not guaranteed to yield an absolute minimal strongly admissible labelling for the argument (as doing so would have implied an exponential complexity), our best performing algorithm yields results that are only marginally larger. Moreover, the runtime of this algorithm is an order of magnitude smaller than that of the existing approach for computing an absolute minimal strongly admissible labelling for a particular argument. As such, we believe that our algorithms can be of practical value in situations where the aim is to construct a minimal or near-minimal strongly admissible labelling in a time-efficient way.
OptiCharge: A firefly algorithm-based approach for minimizing electric vehicle waiting time at charging stations
Authors: Gaba Priyanka , Panwar Arvind , Sugandh Urvashi , Pathak Nitish , Sharma Neelam
Published: March 2024

The use of electric vehicles has raised need for infrastructure for effective charging. Wait periods at charging stations are a problem for both owners and operators of electric vehicles. Owners of electric vehicles are irritated by lengthy wait periods, and charging facilities are underutilised. Wait times at electric car charging stations are decreased using “OptiCharge,” a Firefly Algorithm-based solution. Scheduling charging stations makes sense given the Firefly Algorithm’s ability to adjust to changing conditions and solve challenging problems. In the present paper, we incorporate dynamic scheduling and waiting time computation mathematically into OptiCharge. Extensive testing and comparative analysis with different optimisation techniques demonstrate that OptiCharge decreases waiting times and enhances charging station performance. The results show how OptiCharge may enhance EV charging and promote intelligent, sustainable transportation.
Trend Analysis of Maximum and Minimum Temperature in Can Tho City, Viet Nam
Authors: Cong Nguyen Phuoc , Hung Tran Van , Lien Bui Thi Bich , Duy Dinh Van , Kumar Pankaj , Ty Tran Van
Published: March 2024

Can Tho City is located in the middle of the Mekong Delta, where the effects of climate change have been and will continue to be considerable. According to climate change predictions, the city is one of five regions that could be affected. In this study, we conducted analysis of trends of Tmax and Tmin over 39 years using monthly temperature in Can Tho City. We employed a Box plot, Mann–Kendall test, and Sequential Trend Analysis (SMK). Tmax and Tmin increased for all 12 months from 1984 to 2022, with Sen’s slopes of 0.45°C/decade and 0.29°C/decade, respectively. Although Tmin shows a slower rate of increase than Tmax, the increase in Tmin indicates that the temperature in Can Tho has risen.
Monitoring and Mitigating Climate-Induced Natural Disasters with Cloud IoT
Authors: Taneja Harsh , Verma Rohan , Singh Prabh Deep , Singh Kiran Deep
Published: March 2024

Innovative solutions are necessary for efficient monitoring and mitigation techniques as climate change increases the frequency and severity of natural catastrophes. In this study, we investigate how Cloud Internet of Things (IoT) might help mitigate climate-related calamities. Through the use of cloud computing and sensor networks, Cloud IoT facilitates the capture, processing, and distribution of data in near-real time. This strategy promotes catastrophe planning, response, and recovery by offering early warnings, predictive insights, and simplified communication. The article emphasises the cumulative influence of Cloud IoT components such as sensor networks, data analytics, decision support systems, and remote control in the context of disaster management. Cloud IoT is useful in real-world scenarios, such as the tracking of floods in Bangladesh and the identification of wildfires in California. These cases show how the technology may prevent injuries and preserve property through early warnings and well-coordinated responses. Despite its potential, it faces obstacles including ensuring the safety of data and dealing with issues related to the necessary infrastructure. In conclusion, including Cloud IoT in disaster management provides a cost-effective, scalable, and efficient solution, greatly contributing to constructing resilient communities and creating a sustainable future in the face of climate-induced natural catastrophes.
Chronotropic Incompetence in Parkinson’s Disease: A Possible Marker of Severe Disease Phenotype?
Authors: Andréasson Mattias , Nickander Jannike , Ståhlberg Marcus , Fedorowski Artur , Svenningsson Per
Published: March 2024

Autonomic dysfunction is a prevalent feature of Parkinson’s disease (PD), mediated by disease involvement of the autonomic nervous system. Chronotropic incompetence (CI) refers to inadequate increase of heart rate in response to elevated metabolic demand, partly dependent on postganglionic sympathetic tone. In a retrospective study, PD patients with/without CI were identified. We show that PD with CI was associated with a higher levodopa equivalent daily dose and Hoehn and Yahr stage, 5±2 years after motor onset. Our data support a putative role of CI as a clinical marker of a more severe disease phenotype, possibly reflecting more widespread alpha-synuclein pathology.
Exploring the sexual experiences and challenges of individuals with cerebral palsy
Authors: Newell Amber , Liang Neal , Moskowitz Jan , Lee Nancy , Pan Xiaoyu Norman , Kim Heakyung
Published: March 2024

PURPOSE: Cerebral palsy (CP) is a prevalent motor disorder affecting children, with evolving demographics indicating an increasing survival into adulthood. This shift necessitates a broader perspective on CP care, particularly in addressing the often overlooked aspect of sexuality. The purpose of this study was to investigate experiences of, challenges with, and related factors of sexuality and intimacy that people with CP are facing. METHODS: This was a descriptive and cross-sectional single institution survey among individuals with CP, ages 18 to 65, who had the ability to independently complete an online survey. RESULTS: A total of 40 respondents participated in the survey (Gross Motor Function Classification System [GMFCS] level I/II, 32.5%; III, 35%; IV, 32.5%). Of those, 45% were partnered, 60% had past sexual experience, 47.5% were currently sexually active at the time of submitting the survey, 80% had masturbation experience, and 45.8% believed it had positive effect on their self-esteem. Only 10% received sex education tailored for people with disability, whereas school (72.5%) and internet (35%) were the most common sources of sex education. Muscle spasms, positioning difficulty, and pain/discomfort were the most common physical challenges experienced during intimate activity amongst all function stratifications. Stratification analysis showed that, compared to higher functioning respondents, a smaller proportion of lower functioning respondents were partnered (GMFCS IV, 23.1%; quadriplegic, 31.6%), had past or current sexual experience (GMFCS IV, 44.4%, 36.4%; quadriplegic, 42.1%, 26.3%, respectively), and had masturbation experience (GMFCS IV, 61.5%); Also, they had worse Quality of Life Scale scores on average (GMFCS IV, 88.4; quadriplegic, 88.3) and a higher rate of reported positive effects of sexual experiences on self-esteem than negative (GMFCS IV, 38.5%; quadriplegic, 35%).
Assessing the multivariate distributional accuracy of common imputation methods
Authors: Thurow Maria , Dumpert Florian , Ramosaj Burim , Pauly Markus
Published: March 2024

Imputation methods are popular tools that allow for a wide range of subsequent analyses on complete data sets. However, in order for these analyses to be trustworthy, it is important that the imputation procedure reflects the true distribution of the unobserved data sufficiently well. This raises the question how well different imputation methods can reproduce multivariate correlations, associations or even the entire multivariate distribution. The paper gives first answers to this question by means of an extensive comparative simulation study. In particular, we evaluate the multivariate distributional accuracy for six state-of-the art imputation algorithms with respect to different measures and give practical recommendations.
Ablation for malignant liver tumor using high-intensity focused ultrasound and radio-frequency: A meta-analysis
Authors: Lai Xing , Zhang Songsong , Gong Jianping , Ma Rong
Published: March 2024

BACKGROUND: Primary liver cancer is a major health issue, so finding the most effective treatment is vital. OBJECTIVE: The present meta-analysis compares high-intensity focused ultrasound (HIFU) to radiofrequency (RF) ablation for primary liver cancer treatment. METHODS: PubMed, MEDLINE, CNKI, VIP, and Wanfang were used to search for English and Chinese papers. After carefully confirming data completeness and applying inclusion and exclusion criteria, RevMan 5.3 was used to evaluate the included literature. Data analysis utilized a fixed-effects model for heterogeneity between 0.1 and 0.5. RESULTS: The meta-analysis included 304 patients: 119 had HIFU and 185 RF ablation. For primary liver cancer, HIFU and RF ablation were equally efficacious (odds ratio 1.02, 95% confidence interval [0.54, 1.92]). Overall survival, disease-free survival, and complications at 1, 2, and 3 years were not significantly different (odds ratio 0.72, 95% confidence range [0.04, 12.79], P= 0.82). CONCLUSION: The meta-analysis shows no significant difference in efficacy, long-term survival rates, or complication rates between HIFU and RF ablation for primary liver cancer, but more large-scale, high-quality randomized clinical trials are needed to prove their equivalence. Both therapy strategies seem promising, but additional information is needed to determine their respective merits.
Survivability of endodontically treated cracked tooth: A systematic review
Authors: Mathew Vinod Babu , Shamsuddin Shaheen , Langaliya Akshayraj , Rathod Priyanka Tikaram , Gupta Bharti , Ronsivalle Vincenzo , Cicciù Marco , Minervini Giuseppe
Published: March 2024

BACKGROUND: Literature evidence describes various treatment protocols that have been employed for the effectiveness in improving survival and addressing associated symptoms of cracked teeth. OBJECTIVE: This systematic review investigates the survivability of endodontically treated cracked teeth and associated assessments, focusing on various treatment protocols. METHODS: The PRISMA guidelines were utilised for guiding the article selection framework of this review. A comprehensive search of relevant literature was conducted in May 2023 across various databases, and studies meeting the inclusion criteria were selected. Data extraction, guided by a standardized form, captured crucial details, including study characteristics, treatment protocols, and treatment outcomes, enhancing the consistency and accuracy of information collection. Data extraction and synthesis was done by two reviewers independently. The Newcastle Ottawa tool was used to measure the methodological quality of the study. Six observational studies were eventually included. RESULTS: Mandibular molars are particularly prone to developing cracks, with research indicating a heightened susceptibility to this dental issue. Studies reveal that endodontically treated cracked teeth boast robust overall survival rates ranging from 75.8% to 100%. The risk of bias assessment, utilizing the Newcastle Ottawa scale, indicated a moderate risk across studies, highlighting the necessity for careful interpretation of findings. CONCLUSION: Endodontically treated cracked teeth show marked success in survival, with the incorporation of crowns post-endodontic treatment significantly enhancing longevity and resilience.
IoT-based incubator monitoring and machine learning powered alarm predictions
Authors: Celebioglu Cansu , Topalli Ayca Kumluca
Published: March 2024

BACKGROUND: Incubators, especially the ones for babies, require continuous monitoring for anomaly detection and taking action when necessary. OBJECTIVE: This study aims to introduce a system in which important information such as temperature, humidity and gas values being tracked from incubator environment continuously in real-time. METHOD: Multiple sensors, a microcontroller, a transmission module, a cloud server, a mobile application, and a Web application were integrated Data were made accessible to the duty personnel both remotely via Wi-Fi and in the range of the sensors via Bluetooth Low Energy technologies. In addition, potential emergencies were detected and alarm notifications were created utilising a machine learning algorithm. The mobile application receiving the data from the sensors via Bluetooth was designed such a way that it stores the data internally in case of Internet disruption, and transfers the data when the connection is restored. RESULTS: The obtained results reveal that a neural network structure with sensor measurements from the last hour gives the best prediction for the next hour measurement. CONCLUSION: The affordable hardware and software used in this system make it beneficial, especially in the health sector, in which the close monitoring of baby incubators is vitally important.
Sound and postural control during stance tasks in abnormal subjective haptic vertical
Authors: Anton Kristina , Ernst Arne , Basta Dietmar
Published: March 2024

BACKGROUND: Patients with vestibular impairment often suffer from postural instability. This could be compensated by other sensory systems such as the auditory system. OBJECTIVE: The aim of this study was to investigate whether auditory input improves postural stability in patients with abnormal subjective haptic vertical (SHV). METHODS: Participants (n = 13) with normal hearing and vision, but abnormal SHV participated. Participants performed standing on firm ground and foam support (eyes open/closed) and Tandem Romberg test (eyes closed) in quiet (reference), noise and with plugged ears. All tasks were conducted in a soundproofed and reverberant room. Postural stability was recorded close to the body’s center of gravity. Reference conditions were compared with a control group. RESULTS: In only two tasks sway increased significantly when noise was presented during challenging tasks in the soundproofed room. Sway of the reference conditions did not differ significantly between control and study group. CONCLUSIONS: This study shows no influence of applied auditory stimulation on posture in participants with abnormal SHV in a reverberant room, but an adverse effect on balance during difficult tasks in the soundproofed room. Noise possibly masked auditory information that was helpful in improving posture in the quiet condition. Futhermore, noise might have distracted participants from maintaining balance.
Study of performance indicators and prospects for the development of IP telephony systems
Authors: Batrak Oleh , Smirnova Tetiana , Gnatyuk Viktor , Odarchenko Roman , Smirnov Oleksii
Published: March 2024

The purpose of the work is to study performance indicators and prospects for the development of IP telephony systems. IP-telephony is a special field of telephone communication that integrates methods and means of digital signal processing, transmission of speech, data, video information and multimedia, management of computing resources based on high technologies. IP telephony systems are in demand and widely used, especially in the corporate sector. In this work, a meaningful study of the principles of functioning of modern IP telephony systems is carried out. It was shown that it is very important to continuously monitor the effectiveness of the functioning of these systems. A systematization of indicators that affect the integrated assessment of the effectiveness of IP telephony systems was carried out. At the same time, the quality of the user experience comes to the fore, which is currently of primary importance for a full assessment of the effectiveness of any modern telecommunications system, the main goal of which is to ensure user satisfaction. In addition, the article also analyzes the prospects for the development of IP telephony systems. In particular, market growth forecasts are demonstrated and directions for further improvements of IP telephony systems are outlined.
La perspectiva ontológica en la construcción curricular de la formación del contador público
Authors: Juárez Fonseca Verónica
Published: March 2024

El presente artículo, se escinde de una tesis doctoral (Juárez, 2019), que intenta promover en el tema de la formación profesional del contador público (FPCC); vías de acceso que contribuyan al diseño de estrategias para la construcción del currículo universitario; a partir de las aportaciones que, expertos en la contaduría pusieron de manifiesto como una imperante necesidad en la gestión de una formación profesional incluyente. El objetivo explora las necesidades que subyacen durante la formación del contador público en México. La relevancia del papel del contador, se encuentra frente a los imperativos de los cambios socio económico constantes. Los resultados obtenidos promueven la imperante convergencia de valoración entre las universidades, los retos que estas enfrentan; el desarrollo de habilidades prioritarias, así como las experiencias profesionales exógenas útiles para la formación profesional, desde una mirada que brinda la sociología de las profesiones
MIGRACIÓN EN TRÁNSITO, APORTES PARA SU ESTUDIO EN EL ESCENARIO POBLANO.
Authors: Sánchez Gavi José Luis , Ortega Ramirez Adriana Sletza
Published: March 2024

El trabajo analiza la migración centroamericana en su paso por México y más concretamente nos enfocamos en el tránsito por el estado de Puebla, entidad enclavada en el centro del país. Observamos y discutimos las acciones que ha emprendido el gobierno federal y los avances particularmente en materia jurídica, con normas y leyes que buscan regular y proteger esta modalidad migratoria, así como los obstáculos y retos de enfrenta. Consideramos el volumen de la migración y los parámetros para su estimación. Revisamos las estimaciones del tránsito y datos para la entidad apoyados en las cifras de la Unidad de Política Migratoria, entidad adscrita a la Secretaria de Gobernación, sobre los migrantes asegurados aportando un análisis de los mismos.

Observamos el reacomodo que se ha operado en las rutas, especialmente la que cruza la entidad, toda vez que ha adquirido mayor relevancia  en el transito migratorio, además de formar parte de un segundo filtro de contención de migrantes, junto con otras entidades del centro del país, parte funcional de la denominada Frontera vertical.

Todo ello parte del engranaje en la implementación del Plan Integral Frontera Sur el cual ha rendido frutos con una más rígida política de contención y de expulsión de migrantes en respuesta a la política de securitización del vecino del norte, lo que se traduce en una externalización de las fronteras, como ya sucede en otras regiones del mundo

Presentamos el debate en torno a la detención de los migrantes y los centros de alojamiento, destacando el caso poblano.
Fascismo, populismo de derecha y nacionalismo reaccionario. El Front National y su transformación en el siglo XXI
Authors: Moreno Velador Octavio Humberto , Minutti Sierra Jose Mario
Published: March 2024

En este trabajo se presenta una propuesta de caracterización y análisis de la derecha radical partidista francesa contemporánea a través del concepto de nacionalismo reaccionario. Partimos de considerar a categorías como la de populismo de derecha o fascismo como inadecuadas para describir los cambios que han sufrido las fuerzas de derecha a nivel internacional. Sostenemos que la actual agenda de las derechas internacionales posee elementos novedosos que contrastan con lo que fueron las agendas de los partidos de derecha radical en la mayor parte del siglo XX y particularmente del fascismo.
Comparative Analysis of Plastic Surgery Training Programs: Spain, South Korea, and Japan
Authors: Vicente-Ruiz M. , Henares A. , Hontanilla B.
Published: March 2024

This study analyzes and compares training programs in Plastic, Aesthetic and Reconstructive Surgery in three countries: Spain, South Korea, and Japan. In common, they present a similar university training in medicine with a national qualifying exam, a supervision system during residency with the figure of a tutor, and an important role for training in microsurgery. As fundamental differences, Asian countries have a basic training period prior to the start of residency, in addition to a mandatory certification exam to obtain the specialist title. In addition, they give special importance to participation in conferences and the publication of scientific articles. In turn, Spain guarantees the training of its residents in the fields of hand surgery, burns and cosmetic surgery, in addition to offering more opportunities for international rotations.
Professors’ English-only or Multilingual Approaches in English Language Teacher Education at Ecuadorian Universities
Authors: De Angelis Adeline
Published: March 2024

Preparing English as a Foreign Language (EFL) teachers is a key challenge for higher education institutions in countries like Ecuador. This research summary describes the language use practices that university-based English language teacher educators employ when teaching content courses (such as pedagogy and research methods) and explores how these relate to their expressed purposes of teacher education and language ideologies. The convergent mixed-methods design employs survey data from 115 professors from 21 Ecuadorian universities and focus group data from 28 of those professors with various language use approaches. This research is guided by decolonial theory and the Capabilities Approach and by literature on linguistic imperialism, native-speakerism, and multilingualism. Findings extend research on language use from the English teaching field into teacher education and Comparative and International Higher Education research, where exploration of the benefits and drawbacks of English-only versus multilingual approaches are needed given the prevalence of English-medium instruction.