Open Access Zeitschriften des Universitätsverlages der Technischen Universität Chemnitz
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Tree Detection and Localization Approach for UAV-based Forest Inspection
Get PDFThis paper addressed an UAV-based solution for forest inspection from the aspect of data processing. Insect infected trees can be identified from aerial imagery. The forest inspection data processing divided into two main phases, which are tree detection and tree localization. For the tree detection task, the Deep Learning-based approach has been used. In this study, a conventional and active learning method have been used for the training. In order to map the detected trees from the video frame to geographical locations, a custom geo-localization algorithm has been developed. The proposed system loads the inspection video as an input and calculates and outputs the detected trees’ GPS coordinates. In the calculation Digital Elevation Model and camera parameters are used in addition to drone geo-data to calculate the tree positions
Closed-Loop-Recycling von Förderketten aus Kunststoff
Get PDFIn Transport- und Verkettungsprozessen werden zunehmend Stetigförderer mit Ketten aus technischen Thermoplasten, vorzugsweise aus Polyoxymethylen (POM), hergestellt. Verschlissene Ketten, die sich im Schnitt ca. 2-10 Jahre im industriellen Einsatz unter verschiedensten Belastungs- und Umgebungsbedingungen befinden, werden ausgetauscht und derzeit ausschließlich im Restmüll entsorgt. Im Beitrag werden die mechanischen und tribologischen Eigenschaften von homo- und copolymerem POM bei mehrfacher Verarbeitung sowie Vermischung der Materialtypen analysiert. Auf dieser Grundlage wurde ein Rezyklat aus mehrjährig in industriellen Anwendungen gelaufenen POM-Ketten hergestellt und daraus Proben und Förderketten für weitere Untersuchungen gefertigt. Es wird gezeigt, dass die wertvollen Kunststoffe durchaus erfolgreich recycelt und wieder zu neuen Bauteilen verarbeitet werden können.
In transport and linking processes, continuous conveyors with chains made of engineering thermoplastics, preferably polyoxymethylene (POM), are increasingly being used. Worn chains, which are used in industrial applications for an average of 2-10 years under a wide variety of load and environmental conditions, are replaced and currently disposed of in the residual waste. The article analyses the mechanical and tribological properties of homo- and copolymeric POM during multiple processing and blending of the material types. Based on this, a recyclate was produced from POM conveyor chains that had been used in industrial applications for several years. Samples and chains were made from this material for further investigations. It is shown that the valuable plastics can be successfully recycled and reprocessed into new components
Untersuchung der Quersteifigkeit geflochtener hochfester Faserseile
Get PDFZunehmend ersetzten Seile aus hochfesten synthetischen Fasern in ausgewählten Bereichen der Fördertechnik Drahtseile. Die axialen Eigenschaften der Faserseile sind wohlbekannt. Jedoch sind deren Eigenschaften in Querrichtung noch nachrangig Gegenstand der Untersuchungen. Dementsprechend wurden geflochtene Faserseile hinsichtlich ihrer Quersteifigkeit in Abhängigkeit von deren axialer Vorspannung bis zu einem Sicherheitsfaktor von 7 untersucht
The Impact on Learning Motivation of Spatial Ability Development Learning Model and Interactive Dynamic Tools
Get PDFThis paper reports a study on investigating how different instructional approaches with and without interactive dynamic software affected students’ learning motivation and their concept formation of ideas within a framework of descriptive geometry. Learning motivation was measured by taking an Intrinsic Motivation Inventory questionnaire from three groups of students and comparing the answers of the three groups: one control and two experimental groups
Introduction to Proceedings of ISCSET 2022
Get PDFFor the first time in its history, the proceedings of the 11th International Symposium on Computer Science, Computer Engineering and Educational Technologies (ISCSET-2022) is published in a special issue of the Embedded Self-Organizing Systems journal of the Chemnitz University of Technolog
Realization of Fuzzy Logic Controller in Microgrid for Mongolian case
Get PDFThis paper presents the development and simulation of photovoltaic (PV), wind turbine and battery energy storage system (BESS) based microgrid in a Mongolian case. Although many standalone solar and wind microgrids are installed in Mongolia, they are not operating at total capacity and reliably due to a lack of control and proper use. The microgrid system operates in autonomous mode to serve the loads. To effectively control the microgrid voltage and frequency and achieve smoother power flow control between the generation and consumption, voltage–frequency (V/F) control based on the fuzzy logic controller (FLC) is proposed. Even though there are sudden load variations in the system and fluctuations in PV output power, the microgrid voltage and frequency are effectively maintained within limits by the proposed FLC. A fuzzy logic controller is used for an off-grid operated Microgrid constituted by the solar system, wind system and battery. The PV, wind turbine and BESS based microgrid system are simulated using Matlab/Simulink
Study Results of the e-Learning Readiness of Mongolian Students
Get PDFWhile the pandemic has increased the use of e-learning in education, access varies by location. In order to determine what kind of policy support is needed to support e-learning in the future, it was found that the readiness of students for e-learning is at average level. The purpose of this study is the correlation between the e-learning readiness and technical skills, the ability to communicate with the teacher, the ability to communicate with colleagues, and the communication skills of our country\u27s high school students using an international survey questionnaire. Research analysis were done using SPSS. According to the study results, the location of the schools, the age and gender of the students do not affect the e-learning readiness. However, the fact that the student has his own computer and has sufficient Internet access affects the readiness of e-learning. According to the correlation analysis, technical competence, communication competence with the teacher, communication competence with colleagues, and communication competence are positively related to each other. Also, a survey of students\u27 e-readiness was taken from the teacher, and a discrepancy was observed between the students and the teachers
The Evaluation Result of Online Master Course During Pandemic: Case of Industrial Management Course at Mongolian University of Science and Technology
Get PDFThis paper describes shortly about Mongolia, its higher education in current days, teaching during pandemic in Mongolia and evaluation of online master course at Mongolian University of Science and Technology (MUST). Mongolia is a developing country and the engineering education is one of the important issues of country development. There are comparatively high number of higher education institutions in country which proves need of families to support education of their children. The MUST is a public university which offers the most engineering study courses. The MUST offers bachelor, master and doctor programs in different fields. This paper covers teaching of master courses for “Industrial Management” professions at Graduate School of Business. Due to the pandemic situation the teaching format switched from traditional to fully online mode without any preparation time. Since winter semester of 2022 teaching format returned to face-to-face mode but it is still important to figure out feedback from students who attended master courses fully online during pandemic. Therefore, this paper describes evaluation model and evaluation results for the master course “Industrial Management”
The Irrationality of Digital Medicine: VR, IoT and AI in Practice
Get PDFArtificial Intelligence (AI) has potential to change the tasks that are currently being done by Human being. The Internet of Things (IoT) has potential to increase Medical Device connectivity, enabling more immediate information sharing and coordination between doctors and patients. Virtual reality (VR) has potential to enhance medical training. Digital Health technologies have the power to expand coverage of healthcare (access), enhance services (quality) and reduce/optimize resources (cost). Affordability, infrastructure, and human capability limits overall impacts of Digital Health technologies and must be addressed. Therefore, capacity building through strategic alliances and partnerships remains crucial in harnessing the promises of Digital Health Technologies. This paper summaries challenges in the implementation of Digital health Solutions among African health systems and enumerate the possible ways of addressing the identified challenges.
Keywords— Artificial Intelligence (AI), Internet of Things (IoT), Virtual Reality (VR) Digital Health, Remote Patient Monitoring RPM), Robotic Process Automation (RPA
User Interface Design of Humanoid Robot at Library: Case of Chemnitz University of Technology
Get PDFThe university library is one of the key places for students at higher education institutions. Some universities support their students with their literature search and research with humanoid robots. The Chemnitz University of Technology (CUT) is one of pioneer universities where a humanoid robot will assist at the university library. This paper describes user interface requirement and its programming, testing and implementation of humanoid robot at the university library. The programmed humanoid robot should support students and visitors with useful guidance and hints in finding materials they need for their research and study. For programming of the robot, the programming language Python was used and the implementation was tested with limited number of users due to the pandemic situation