Open Access Zeitschriften des Universitätsverlages der Technischen Universität Chemnitz
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Prognosis of Complications at Surgical Treatment of Benign Parotid Tumors
Get PDFThe development of clinical medicine to a certain extent depends on the level of prognosis of surgical patients. In prognosis, the method of regression analysis is widely used. Prognostic scales help to assess the risk of complications in patients after surgery, which allows the use of relatively more effective diagnostic and therapeutic measures. The aim of the study was to develop the integral mathematical characteristics of the prognosis of the outcome at surgical treatment of benign parotid tumors, adequately describing the pathological process. When constructing a mathematical prognostic model, its parameters were subject to the requirement of their efficiency above ??95% according to the t-criterion. The purpose of the mathematical modeling was to statistically adequately link the complications of surgical treatment of parotid tumors with clinical and diagnostic data. The developed mathematical model made it possible, on the basis of significant clinical and diagnostic data in patients, to identify prognostic factors for the development of paresis of the mimic muscles of the face in the surgical treatment of benign parotid tumors. Based on the studied correlation analysis, the significant (??0.05) clinical prognostic factors for the development of paresis of the mimic muscles of the face after the operation of partial superficial parotidectomy were revealed: gender, patient’s age, cytological result, sonoelastographic strain-ratio value, computer tomography or magnetic resonance imaging of tumor size. Also, the prognostic factors for the development of paresis of the mimic muscles of the face during the parotidectomy and the extracapsular dissection of the lower pole of the parotid gland were determined. In the result the certificate of the official registration of the computer program was received. The possibility of prognosis of the complications of surgical treatment in patients with parotid tumors has also been developed in order to reasonably carry out more effective therapeutic and rehabilitation measures
The Design, Practice and Effects of a SPOC
Get PDFThe 2022 “Frontier of Educational Technology” summer school was held by the Department of Educational Technology, Graduate School of Education, Peking University from July 4th 2022 to July 8th 2022. In order to ensure the learning quality, a small private online course was designed for the first time. A series of learning activities such as ice-breaking trip, expert lectures, group discussions, and group presentation were carried out with the help of the course management system, live broadcast platform and social media groups. We analyzed the data recorded by the course management system and found that more than half of the students participated in all learning activities, and the final completion rate of the summer school is as high as 89.86%. An online questionnaire was used to examine students’ subjective responses to the pedagogy and course performance. The results showed that the average score of almost all the questions in the questionnaire is greater than 4.3 points (out of 5.0), indicating that most students are satisfied or very satisfied with this pedagogy. Suggestions for improvement and future expectations are put forward, and can provide a reference for the full-online SPOC practice and research that are being widely carried out around the world
Analysis of Success Factors of E-Learning
Get PDFE-learning is being considered one crucial method of education, and various models and methods are being used to test its implementation and accomplishments. Among many, the DeLone MacLean information success (IS) success model is the most widely used in the assessment of e-learning systems’ success evaluation. The aim of this research was to study the effectiveness of the platforms used in e-learning at the Mongolian University of Science and Technology. In this study, we used the D&M IS Success Model to examine whether e-learning can be a successful transmitter of knowledge. Our intention was to assess the success of e-learning by the D&M IS Success Model, define the impact of current e-learning practice on individuals, and identify the factors that affect the quality. The survey covered 685 undergraduate and graduate students of the Mongolian University of Science and Technology. Results demonstrated that high-quality systems and information upsurge the individual impact. In addition, increased and continuous usage of e-learning systems plays a mediating role between system quality and individual impact. To ensure the continuous use and effectiveness of e-learning systems, special attention should be paid to factors such as service quality, systems’ simplicity and flexibility, and customer satisfaction
FPGA based Speech Separation using IPD Features
Get PDFThe problem of speaker separation is an established field in science and goes back to the cocktail party problem defined in 1953. For decades, methods have been improved and developed, but the computational complexity is rarely considered just as the possibility to use hardware acceleration mechanisms. For this reason, this paper addresses the research question: how speaker separation can be realized on embedded systems by exploiting parallelization and intelligent hardware/software partitioning. For this purpose, a concept is described which uses an FPGA for parallelization to separate a speech signal from an intended direction providing a constant throughput rate. The implementation results show the independence of FPGA resources except BRAM size, proving the scalability of the concept, just as the real-time capabilities
Structural stability of Polylactide rope drums with a hybrid Gyroid-spokes infill structure, manufactured through fused filament fabrication
Get PDFAdditive manufacturing (AM) offers greater design freedom than conventional manufacturing processes. AM allows for components with complex infill structures of e. g. triply periodic-minimal surfaces (TPMS) that lead to significant weight reduction. Nevertheless, AM is mainly used in specialised engineering branches such as aerospace and medical engineering. This is due to high system cost and the high energy costs of the machines used, which utilise selective laser sintering (SLS), laser powder bed fusion (LPBF), or stereolithography (SLA). Fused filament fabrication (FFF) can offer cheaper and more energy-efficient machines. A series of tensile tests with FFF rope drum bodies made from polylactide (PLA) aims to investigate the stability of FFF machine elements. The test specimens possess a novel, hybrid infill structure comprised of straight spokes and a TPMS-gyroid surface. Compared to previous investigations, the specific breaking force – relative to the test specimens’ weight – increased by up to 159%. Whereas the infill density affects tensile strength as well as deformation, the infill distribution between the TPMS and spokes part of said hybrid structure affects especially the deformation behaviour. The results show that FFF machine elements such as the tested drum bodies have a realistic perspective for use in future products with regard to static strength
Application of the SMART Method in Teaching the Module "Scientific Education" in Students
Get PDFRapidly developing computer information technology is bringing significant changes in all aspects of our daily lives. It is no secret to all of us that at present society cannot be imagined without Information Communication Technologies. In general, the development of each country can be judged by the introduction of modern information and communication technologies into the industry. The innovative activity of pedagogues is the main factor in the reform of the education system. One of the most important aspects of modern education is the achievement of the innovative character of the pedagogical activity. The more innovation there is in the pedagogical activity, the better understanding of the teacher\u27s own experiment can be achieved. In it, the teacher participates widely in creating, applying and improving innovation as the subject and organizer of the innovation activity. They seek to analyze the content in science and the essence of changes in knowledge and traditions. This article highlights the importance of using the "mental method" in teaching the" scientific education " module in the development of innovative activities of students of higher educational institutions in an informed environment
Evaluation and its Analysis of Study Course: Pharmacology
Get PDFThis paper describes self-evaluation and its analysis on study course “Pharmacology” of program “Pharmaceutical” at Mongolian University of Pharmaceutical Sciences (MUPS). The study course “Pharmacology” is one of mandatory study course in “Pharmacology” program. The course teaching and learning hours consists of 48 hours lectures and 96 hours seminars lessons. The study direction “Pharmaceutical” established in 2005 and till 2022 more than 1997 students graduated degree in this program. This study program received accreditation certificates in 2014 and 2021. Lecturers who teach same courses in this study program first time done self-evaluation on their teaching course. For evaluation process applied structure-oriented evaluation (SURE) model. Data collected by google form and processed by the SURE online tool
Express assessment of sonoelastographic parameters in patients with tumors of the parotid salivary gland
Get PDFThe aim of the work was to develop effective integral characteristics of the express assessment of the elasticity index and elastotype in patients with tumors of the parotid salivary gland, that made it possible to obtain a certificate of official registration of the program for electronic computers
Experience of Project-Based Learning for First-Year Engineering Students at GMIT
Get PDFThis study introduces the experience of a project-based learning (PBL) approach for first-year engineering students at German-Mongolian Institute for Resources and Technology (GMIT), Mongolia. The engineering project course at GMIT is the first-ever PBL experience for engineering curriculum in Mongolia and adapted from the engineering program at the Technical University of Darmstadt and has been implemented since 2014. It is dedicated to preparing students for gaining both technical and soft skills through PBL from the beginning of their engineering education. The questionnaire surveys are taken regularly during the course period from students to improve the course quality. The current study presents the analysis of questionnaire surveys done in 2019 and discusses the benefits and challenges of the course. The responses by students revealed that the implementation of the course was beneficial in improving teamwork. Suggestions based on the PBL are given to improve the effectiveness of engineering education in Mongolia
Herausforderungen und Erfahrungen der ortaufgelösten Erfassung des Verschleißzustandes von Rollenketten
Get PDFDer wichtigste Verschleißzustand bei Stahlgelenkketten ist die Kettenlängung, die sichwährend der Betriebszeit durch die Gelenkbewegung laufend ändert und durch das CCM-S kontinuierlich und digital erfasst werden kann. Durch stetigen Materialabtrag an den Kontaktstellen vergrößern sich die Abstände von Bolzen zu Bolzen. Je nach Anforderungen an den Kettentrieb wird die zulässige durchschnittliche Längung der Kette auf einen definierten Prozentwert begrenzt. Dieser liegt häufig unter dem maximal für einen sicheren Betrieb zulässigen Wert von 3 Prozent.Allerdings kann aufgrund unterschiedlichster Einflüsse die Längung in den Gliedern bzw.Segmenten einer Kette deutlich variieren. Die Auflösung der Kettenlänge in einzelne Segmente wird durch die CCM-S Zusatzfunktion „SLE“ (Segment Link Elongation) ermöglicht. Insbesondere in hochpräzisen Kettentrieben, in denen zwei Förderketten zum Transport von Formen oder Werkstückträgern eingesetzt werden, kommt es auf die Parallelität der Ketten an. Trotz durchschnittlich geringer Kettenlängung kann es durch Inhomogenität in den einzelnen Gliedern zu Ausfällen und Stillstandzeiten in den Anwendungen kommen. Der Vortrag fokussiert hierbei auf eine spezielle, auf Stahlgelenkketten angepasste Sensorik. Es wird das Prinzip zur Erfassung der durchschnittlichen Kettenlängung sowie der Längung einzelner Kettensegmente (SLE) beschrieben. Verschiedene Anwendungsszenarien werden vorgestellt und die Messergebnisse diskutiert.Bei der Weitergabe der Daten kommt das im IIOT-Umfeld etablierte Protokoll IO-Link zum Einsatz. Dafür wurden bereits verschiedene Systeme umfangreich getestet und Erfahrungen in verschiedenen Kundenanwendungen gesammelt. Hierzu werden die verschiedenen Einsatzmöglichkeiten diskutiert