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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Lateral Buckling Of Overhanging Beams

Ozdemir, Kerem Murat 01 August 2005 (has links) (PDF)
Lateral torsional buckling should be taken into account during the design of overhanging steel beams. One special type of overhanging beams is the crane trolley monorails. Lateral buckling of overhanging monorails under idealized loading and boundary conditions has been studied in the past using classical mathematical procedures. This thesis aims to present a detailed investigation of overhanging monorails using finite element analysis. Effects of different loading and boundary conditions were studied in detail. It was found out that the location of loading and supports on the cross section have significant effects on the buckling capacity. Beams having different warping and torsional properties were analyzed. The effects of cross section distortion on buckling capacity were investigated for beams with single and double overhangs. The reduction in capacity due to cross section distortion has been quantified. Based on the analysis results simple design recommendations were developed for lateral buckling of overhanging monorails and they are presented herein.
22

Kočka šrotového jeřábu - otočná část / Scrap crane cat - rotating part

Begáň, Matej January 2021 (has links)
The diploma thesis deals with a design of a rotating part of a crane trolley of a scrap crane with a load capacity of 110,000 kg, which is situated in an exterior environment. The aim of the diploma thesis is a design and calculation verified design of the lifting mechanism, rotation mechanism and the design of a spacious traverse, which is used for the manipulation of the scrap trough and casting ladle.
23

A retrieval-based chatbot ́s opinion on the trolley problem

Björklin, Hampus, Abrahamsson, Tim, Widenfalk, Oscar January 2021 (has links)
The goal of this project was to create a chatbot capable of debating a user using limited resources including a discussion thread from the online debate forum Kialo. A retrieval based bot was designed and the discussion thread was converted into a database which the bot could interpret and choose an appropriate answer from. Which answer is appropriate is decided by the bot using a few key features in a given input sentence. The main features are word similarity, sentiment distance and BERT-encoding (a model for vector representation of text created by Google). The similarity of these features where then used to score claims from the dataset. Combining and weighting the scores was then used to find the correct response to a given input sentence. The most successful of the features was BERT-encoding. Once the bot had been refined it was brought online and tested using the communication platform Discord.
24

Jeřábová dráha mostového jeřábu / Travelling track of portal crane

Petráš, Ivo January 2008 (has links)
This diploma thesis handles with a draft and conception of the warehouse hall and crane track where the main goal is the creation of outside and inside storage space which is covered by the trolley crane. Next point is about construction and stress calculation of the crane track and logistic ordering of the outside space with option of loading on wheel and rail transport.
25

Mostový jeřáb - návrh jeřábové kočky / Overhead crane - design of crane trolley

Brzobohatý, Petr January 2010 (has links)
The diploma work deals with design of lifting mechanism of overhead crane trolley with a load capacity 200 t. The main objective is design and analysis of selected components of lifting mechanism and components which are directly associated with lifting mechanism. Work includes design elements of a rope system, such as rope, rope drum, sheaves, sheave block, elements of the proposals of propulsion, such as engine, transmission, brake, coupling. The work contains also strength calculations of some components and drawing documentation.
26

Posouzení traverzy mostového magnetového jeřábu 15t / Analysis of traverse of bridge magnet crane 15t

Bartušek, Filip January 2016 (has links)
The diploma thesis deals with some parts of bridge magnet crane with 15 tons of nominal lifting capacity. This crane is designed for operation in the steel mill for handling billets using magnets suspended on the traverse. This work is focused on design of hoisting and traverse mechanism of crane trolley, selection of individual components on the basis of relevant standards and calculations. Next part of this thesis is investigation magnet traverse in terms of its strength according to standard ČSN EN 13001.
27

Remembering Idora Park: Landscape, Memory, and Discourse in an Urban Amusement Park

Sympson, Megan M. 22 July 2016 (has links)
No description available.
28

The preparedness of Bloemfontein radiographers for common medical emergencies

Botha, R.W., Kotze, B. January 2014 (has links)
Published Article / Radiographers need to know how to react appropriately when a patient has a medical emergency; this is not only essential but lifesaving. This reaction stems from a theoretical framework that guides an automotive sense of knowing what to do and how to assist. Having the correct equipment completes this circle. The objectives of this study was to evaluate the responses of Bloemfontein radiographers in emergency situations based on the awareness of their role in emergency procedures and their role in the application of pharmaceuticals and equipment on the emergency trolley. A checklist compiled from literature was used to evaluate the state of emergency trolleys at four hospitals in Bloemfontein through impromptu visits. A questionnaire was used to determine the preparedness of radiographers for common medical emergencies. The currency of their first aid training was also established. The study results showed that 50% of the emergency trolleys' content conformed to guidelines in literature; the other trolleys contained expired medicine. Forty-five percent of the radiographers in the sample did not know how to assist effectively when using an emergency trolley. Of the participants 73.5% would respond according to protocol in emergency situations. Fifty-three percent of the radiographers in the study did not have valid first aid certificates. This study showed that though most participating radiographers would respond to emergency situations according to protocol, certain aspects of their response have shortcomings. Additionally the availability of equipment and medication is cause for concern.
29

Trains, Trolley Cars, and Lifeboats: A Solution to Agent-Centered Restrictions and Tragic Questions through the Application of Middle Theory

Ferrer, Eric Christopher 01 January 2014 (has links)
This Thesis will examine how the framing of ‘trolley problems’ incorrectly motivates arithmetic rankings of states of affairs by removing context. This is problematic because the context of these problems provides the tools to solve moral dilemmas by allowing one to analyze the relevant motivations, moral implications, duties, values, and personal and societal obligations that one has. I will discuss Samuel Scheffler’s charge that a paradox exists within agent-centered restrictions and how his abstract paradigmatic case leads to arithmetic rankings of choices, which are both unrealistic and lead to tragic and morally unacceptable decision making. I will argue that Allen Wood’s Middle Theory can help dispel the apparent paradox and demonstrate a better way to examine ‘trolley problems’. I will further discuss how Martha Nussbaum’s analysis of tragic questions illuminates the issues surrounding such problems providing a morally acceptable way to account for the occasional unavoidable harm that results in decision-making caused by solving ‘trolley problems.’ Taken together, Wood’s and Nussbaum’s theories and analysis provide potential solutions to ‘trolley problems.’
30

Dvounosníkový skříňový mostový jeřáb / Double Box Girder Bridge Crane

Vlachovič, Tomáš January 2014 (has links)
The diploma thesis deals with the assessment design of two-girder crane bridge for the lifting capacity 50 tons. Span of the crane is 20 meters, wheelbase is 3.15 meters and lifting height is 7 meters. This diploma thesis deals with the numerical solution box beam and using the finite element method is solved buckling. The diploma thesis has been elaborated using the relevant technical literature and standards that contain procedures and recommendations for calculation and designing of bridge cranes.

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