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Beitrag zur Vorbemessung der Biegeverstärkung von Stahlbetonbauteilen mit Rechteckquerschnitt mittels aufgeklebten CFK-Lamellen

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ISBN: 9783966270021 9783966270038 9783966270007 9783966270014 Year: Pages: 252 DOI: 10.33968/9783966270021-00 Language: German
Publisher: HTWK Leipzig - OA-Hochschulverlag
Subject: Agriculture (General)
Added to DOAB on : 2020-02-12 11:21:04
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"Since 2012, the subsequent reinforcement of reinforced concrete components with bonded reinforcement has been regulated in a separate guideline. This includes the dimensioning of the adhesively bonded strips made of carbon fiber reinforced plastic (CFRP), which, in addition to the complex iterative bending design, have a very complex bonding behavior. For this purpose, the German Committee for Structural Concrete developed a model for the verification based on experimental evaluations, in which the occurring tensile forces are partly transferred into the component via intermediate elements (partial distances between flexural cracks). Simultaneously, simplified but more inaccurate verification formats were made available to reduce the complexity of the verification. For an early assessment of the use of bonded CFRP strips, different tools have been developed in this paper for reinforced concrete components with a rectangular cross-section depending on the different verification formats. For this purpose, the design parameters were considered separately for pure bending strength and bonding behavior. For a simple calculation, tables for the design with dimensionless coefficients were obtained by analogy with the reinforced concrete construction, with which the required cross-section area for the CFRP strips can be determined by means of a limited stretching from the simplified verification of the flexural load bearing capacity. For a more economical solution, the more precise verification of the force transmission on the intermediate elements was configured in an Excel workbook, because this results in an extraordinary iterative calculation effort."

Open-Access-Publikationsworkflow für akademische Bücher

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ISBN: 9783966270175 9783966270182 9783966270151 9783966270168 Year: Pages: 440 DOI: 10.33968/9783966270175-00 Language: German
Publisher: HTWK Leipzig - OA-Hochschulverlag
Subject: Agriculture (General)
Added to DOAB on : 2020-03-18 11:21:02
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"The need for an immediate, transparent and sustainable dissemination of current research has become a prerequisite for the further development of science today. Making research results freely available online as Open Access is considered to achieve the widest possible dissemination worldwide. Everyone can access anywhere Open Access publications without any restrictions or paywalls. Meanwhile more and more academic institutions and universities have already started their own presses to publish books Open Access. In the present manual a sustainable and ideal workflow for producing and publishing academic books is presented. That workflow enables universities to publish their publications both as Open Access and printed books in a state-of-theart way and without any restrictions regarding the license, the variety of formats, print run etc. As proof of concepts we have processed different use cases which demonstrates the current status of the technically and economically possibilities in the publishing sector. Furthermore, data on time, costs and personnel resources were determined, which can be used by other universities and academic institutions to indicate the necessary investments for founding and operation of their own Open Access university presses."

Kommunikationstechnische Optimierung eines energieautarken funkbasierten Sensorkonzepts

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ISBN: 9783966270069 9783966270076 9783966270045 9783966270052 Year: Pages: 94 DOI: 10.33968/9783966270069-00 Language: German
Publisher: HTWK Leipzig - OA-Hochschulverlag
Subject: Agriculture (General)
Added to DOAB on : 2019-10-21 11:21:20
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In this bachelor thesis, an existing wireless sensor concept was examined with regard to software optimization possibilities. First, the application possibilities of such sensor systems in the existing maintenance strategies were described. Subsequently, an analysis of the previous sensor concept was carried out, on the basis of which an alternative concept to communication optimisation was realised with the existing hardware. By replacing the previously used application protocol HTTP with the lightweight MQTT, an alternative sensor concept was created. In addition, a measurement concept was developed to determine the transmission time, which allows a comparison with the existing sensor concept. It was thus possible to evaluate the extent to which the objective had been achieved.

Analyse von Kundenaktivitäten und der Bereitstellungsqualität von Büchern aus Kundensicht

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ISBN: 9783966270106 9783966210113 9783966270083 9783966270090 9783966270113 Year: Pages: 160 DOI: 10.33968/9783966270106-00 Language: German
Publisher: HTWK Leipzig - OA-Hochschulverlag
Subject: Media and communication
Added to DOAB on : 2019-12-20 11:21:02
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"This master thesis explores service characteristics that are relevant for book readers when they evaluate a service as well as starting points for providers when they plan to optimize their services from a customer’s point of view. In the first part ways of accessing books (buying, borrowing, rent) and the reading behavior of Germans will be described. Then the concept “quality of provision” of books will be discussed which distinguishes five quality dimensions of a service: diversity of content and arranging of books, basic technology (printed book or digital environment), temporal and spatial access, costs of access and ease of use. By using secondary material for each dimension individual quality characteristics will be identified. Next the theoretical background of the activity theory and a special way of thinking, the customer-dominant-logic, from the Nordic school will be explained briefly. Based on this a set of consumer activities related to books will be presented and some activities that are relevant for the work will be described in more detail by means of secondary material (reading books, choosing books, organizing books and information). Further customization and personalization will be proposed as strategies for individualization of services and their function for consumers will be explained. The secondary data used in the work comes from empirical data out of consumer surveys in libraries and bookshops, nationally representative surveys and from results of academic research from different fields. In the final part of this thesis an own data collection will be conducted by using a content analysis of consumer comments of two e-book rental apps (n = 1,245 comments). The analysis should clarify, if the quality characteristics, the book-related activities and the strategies for individualization described before can be found in everyday reality of consumers. After that the results of the content analysis will be presented. Finally the major findings will be summarized and connected to the research questions."

Stadt als Schule

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ISBN: 9783966270144 9783966270120 Year: Pages: 68 DOI: 10.33968/9783966270144-00 Language: German
Publisher: HTWK Leipzig - OA-Hochschulverlag
Subject: Architecture
Added to DOAB on : 2019-10-21 11:21:20
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When a fire department called "Ostwache" in the eastern part of Leipzig closed down, it left their old building behind vacant. Soon after a neighbourhood initiative sought to use the space to establish a community center for the surrounding neighbourhood. At the same time, the municipal government was planning a new school on the same lot. This thesis presents a solution for this conflict. By bringing together architectural, urban planning and pedagogical perspectives, while aiming for synergies. Following the model of Freinet pedagogy, a community school was planned with a new building at the site of the old fire station and the community center is to be located in the existing building of the old Ostwache. Through a common courtyard, shared work and sports facilities and a shared lunch, the school opens up to the city and its neighborhood to the school. This is how city works as school and a school works as city.

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