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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

Concept development for quality management and predictive maintenance in the area of hydroforming (IHU): SFU 2023

Reuter, Thomas, Massalsky, Kristin, Burkhardt, Thomas 06 March 2024 (has links)
Series manufacturers in the field of hydroforming face intense competition from alternative conventional manufacturing methods and their cost criteria. Changing production requirements in the globalized market environment require flexible action with highest quality and low costs. Cost savings can be achieved through reductions in warehouse and circulating stocks. Malfunction-related downtimes in hydroforming systems must be reduced to a minimum in order to meet the agreed delivery dates on time and avoid conventional penalties. The required productivity and the desired quality level can only be maintained through adapted maintenance strategies, leading to the development of a concept for predictive maintenance integrated with quality management specifically for the IHU domain. Dynamic process and maintenance adaptations are a central component to this developmental effort.
22

從集體行動看社區意識與管理制度對公寓大廈管理維護之影響-主觀滿意度與客觀績效分析

陳香妃 Unknown Date (has links)
社區意識與管理制度是促成公寓大廈管理維護集體行動的兩種途徑,前者可提升鄰里情誼與環境認同,後者可促使居住品質維持一定水準,兩者對於管理維護表現也都有所影響。透過管理維護主、客觀表現之衡量,社區意識與管理制度對於住宅管理維護有何影響?結合主、客觀二者來看,真正好的管理維護其意涵為何?較佳的管理維護表現組合(主觀滿意度高、客觀績效表現亦好)會受到哪些因素影響?乃本文所關注之焦點。 實證結果發現,社區意識與委外管理程度對於管理維護的主、客觀表現皆有正面的影響,而委外程度的重要性又稍大於社區意識,顯示在促成公寓大廈管理維護的集體行動時,制度途徑(管理制度)的效果比社會途徑(社區意識)來得好一些。此隱含著公寓大廈管理維護不但需要社區內部凝聚共識,也需要建立適宜的管理制度,此可透過專業管理公司或廠商人員給予協助,促使公寓大廈管理維護能確保一定品質。 此外,真正好的管理維護應該是「住家環境非常安全、舒適,住戶也感到很滿意」,透過實證分析可知,社區戶數愈多、屋齡愈新、決議事項執行效率愈好、社區意識凝聚情形愈佳、委外程度愈高,管理維護表現出現「較佳組合」的機率會比「較差組合」來得大。
23

Methodik zur Erstellung von synthetischen Daten für das Qualitätsmanagement und der vorausschauenden Instandhaltung im Bereich der Innenhochdruck-Umformung (IHU)

Reuter, Thomas, Massalsky, Kristin, Burkhardt, Thomas 28 November 2023 (has links)
Unternehmen stehen zunehmend vor der Herausforderung, dem drohenden Wissensverlust durch demografischen Wandel und Mitarbeiterabgang zu begegnen. In Zeiten voranschreitender Digitalisierung gilt es, große Datenmengen beherrschbar und nutzbar zu machen, mit dem Ziel, einerseits die Ressourceneffizienz innerhalb des Unternehmens zu erhöhen und anderseits den Kunden zusätzliche Dienstleistungen anbieten zu können. Vor dem Hintergrund, ein effizientes Qualitätsmanagement und eine vorausschauende Instandhaltung mit ein und demselben System zu realisieren, sind zunächst technologische Kennzahlen und die Prozessführung zu bestimmen. Im Bereich der intelligenten Instandhaltung ist es jedoch nicht immer möglich, Fehlerzustände von physischen Anlagen im Serienbetrieb als Datensatz abzufassen. Das bewusste Zulassen von Fehlern unter realen Produktionsbedingungen könnte zu fatalen Ausfällen bis hin zur Zerstörung der Anlage führen. Auch das gezielte Erzeugen von Fehlern unter stark kontrollierten Bedingungen kann zeitaufwendig, kostenintensiv oder sogar undurchführbar sein.
24

Methodology for the creation of synthetic data for quality management and predictive maintenance in the field of hydroforming (IHU)

Reuter, Thomas, Massalsky, Kristin, Burkhardt, Thomas 28 November 2023 (has links)
Companies are increasingly challenged by the impending loss of knowledge due to demographic change and employee loss. In times of advancing digitalization, it is important to make large datasets accessible and usable, aiming at increasing resource efficiency within the company on the one hand and being able to offer customers additional services on the other. Given the background of implementing efficient quality management and predictive maintenance with the same system, technological key figures and process control must first be determined. In the field of intelligent maintenance, however, it is not always possible to record error states of physical systems in series operation as a data set. Deliberately allowing faults to occur under real production conditions could lead to fatal failures or even the destruction of the system. The targeted generation of faults under highly controlled conditions can also be timeconsuming, cost-intensive, or even impractical.
25

台北市集合住宅管理維護模式之研究

洪子茵 Unknown Date (has links)
住戶對其居家環境每日必需的管理維護工作通常有兩大類選擇:住戶自行負責或委託管理維護公司。目前國內集合住宅在管理維護執行上的現況,係「自行管理」佔了68﹪,「委託管理」佔32﹪,這樣的比例與香港及日本的集合住宅大部分係屬委託管理的情形相差甚遠。為何台灣集合住宅委託管理的情形較不普遍?究竟是什麼因素在影響住戶對管理維護模式的選擇?而不同的管理模式其管理維護的效果有何不同?又是哪一種管理維護模式最能讓住戶感到滿意?此乃本研究關注之焦點。 實證結果發現,集合住宅的「規模」與「價格」是影響管理模式選擇的關鍵,當戶數規模與管理費用越足夠,選擇委託管理模式的機率將越大。平均而言,高層大廈與社區,選擇委託管理較自行管理的勝算分別為公寓的6.357倍與4.245倍。此外,當戶數規模平均每增加10戶,選擇委託管理模式的機率就會增加3.9﹪;而當管理費用平均每坪增加10元時,選擇委託管理模式的機率亦會增加6.5﹪。 至於管理維護模式與住戶滿意度的探討,委由管理維護公司來維護社區的結果均比自行管理來得讓住戶滿意,而「部分委託管理模式」則是四種模式中滿意度最高者。究其原因,管理公司雖有其專業知能與經驗的優勢,但也可能存在著代理問題,受到這二者相互權衡(trade-off)的影響,全部委託管理的滿意度便不如部分委託管理。 為使理論實證結果能與實務連結,本研究對「規模」與「價格」做門檻值推估,發現委託大樓管理業者的社區,住戶至少每月每坪需繳交70元的管理費,且該社區的總戶數應該在100戶左右,由此可知,台北市集合住宅的平均戶數可能因未達經濟規模門檻值(因為目前已報備管理組織的公寓大廈有八成其戶數都在百戶以下),致使台北市委託管理的情形並不普遍。此外,集合住宅內生存在的協商困難與外部性問題,也是委託管理比例偏低的原因,建議政府應藉租稅優惠方式來使外部效果內部化,並直接或委託民間非營利團體協助輔導集合住宅管理組織之報備,減少其中的協商成本。   關鍵字:集合住宅、管理維護、管理模式、住戶滿意度、戶數與管理費門檻值 / Households typically manage their living environment using one of two modes. Under the first, household conducts all of the basic and day-to-day management functions. Under the second approach, the household hires a property management company to provide and monitor a number of services such as repair and maintenance quality control. In Taiwan, the current proportion of the implementation of condominium ( collective housing ) management and maintenance is 68% of owner management and 32@/o of company management. Comparing to Hong Kong and Japan where the company management is more common than owner management, this proportion is far behind. This research is focus on the reason of less popular of company management in Taiwan collective housing and the factors of affecting the choice of management mode. Moreover this research also discusses the results and effects of different management modes and which management mode can provides the highest degree of satisfaction. The empirical results show that the main factors of selections between different management modes are the "scale" and the "price" of the condominium. On average, comparing company management and owner management, the possibility of choosing company management is 6.357 times more in high-rise buildings (above 13 floor) than in apartment (under 5 floor) and 4.245 times more in the community (large projects) than in apartment. Besides, when the scale of the quantity increases additional ten units averagely, the possibility of choosing company management will increase 3.9% ; and when the management cost averagely goes up extra ten dollars per Pin, the possibility of choosing company management will also increase 6.5 % . As for the discussion of the relationship between the management modes and the household satisfaction, general speaking, the household can get more satisfaction from the result of appointing building management & maintenance companies. Moreover, the outcome of "part company management mode" is the most outstanding one in the four types. The reason is that although the company has the professional knowledge and superior management skills, there does also exist the problem of agency. Due to the trade-off relationship, the satisfaction of complete company management mode is less than part company management mode. In order to relate the theoretical model to the practice, this research infers the thresholds of "scale" and "price". The results show that every household in the community which has hired the building management & maintenance industry has to pay 70 NT$ per Pin-Month in average; furthermore, the number of its households should be approximate 100 units. Therefore it can be said because of the fact that the average number of the household in condominium in Taipei might not excess the threshold of economic scale, company management is not very common in Taipei.( note that at this stage 80% of the registered condominium is less than hundred households.). Besides, the reason of low proportion of company management is that there does exist the difficulty in negotiations and externalities. Consequently, it is suggested that government should use the effect of tax policy to intemalize the externalities. It is also recommended that government can direct or indirectly authorize the non-profit organizations to assist home owners associations to register, so that the cost of negotiations can be reduced. keywords: condominium、 management & maintenance 、 management mode、household satisfaction 、 thresholds of "scale" & "price"
26

Aplikace systému hospodaření s vozovkou (SHV) na silnicích II. a III. třídy Libereckého kraje / Aplication of

Žůrek, Jakub January 2020 (has links)
This master thesis deals with the pavement management system as a tool for a management and maintenance of the roads in the Liberec region. The aim is to collect road failures within the network pavement management system level on roads of 2nd and 3rd class. The resulting data will be used for evaluate pavement condition and make plans of pavement maintenance and rehabilitation in variants. Furthermore, the thesis deals with individual variants in the process of data evaluation when evaluating their suitability and accuracy. The theoretical part summarises the information needed to understand the functioning of the road management system, as well as a description of the software used to collect and subsequent work with the data. In the practical part are presented results of the thesis and moreover the questions arising from the goals set are answered.

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