39 research outputs found
Interview with Felicita Monteblanco, Albertina Kerr, 2009 (audio)
No full textInterview of Felicita Monteblanco by Charles Gilman on May 20th, 2009
Digital literacy of employees in production process - Analyze of production stability and productivity in INDUSTRY 4.0 concept
No full textImportant part of the higher productivity and effectiveness in today's industrial enterprises confronted with growing automation and digitization of production processes is strong connected with the ability of employees to be prepare communicate with newest digitized production technologies. Skills and abilities of employees influence radical the productivity, performance, value added of production flows. Presented paper analyze important parameters of digital literacy of employees in production processes and confronts the results with the core requirements on continuously process performance and improvement. Results achieved by presented analyze are useful for development of digitized process management schemas, prediction of effective value stream in production process. © 2018 Author(s)
Timber High-Rise Buildings: Parametric study of the influence of preliminary design parameters on the wind-induced dynamic response of timber high-rise buildings
No full textThe implementation of timber as a load-bearing and stabilizing material for high-rise structures has significantly increased over the last decades due to its potential of reducing the environmental footprint of a structure. Timber structures present a reduced global stiffness and self-weight compared to structures incorporating traditional construction materials, making them prone to high accelerations caused by wind load which affects the structural integrity and user comfort. The acceleration of a structure is a highly complex parameter that must be determined using modal analysis computed by a full-scale finite element model, and is significantly influenced by the magnitude of the wind and vertical loads, as well as the global stiffness of the structure. During the preliminary design phase, it is the responsibility of structural engineers to determine the feasibility of the design and estimate the amount of material required and the distribution of the structural elements. However, this process must be done under a limited amount of time, forcing engineers to rely on rules of thumb and previous experience, which are not currently available for the design of timber high-rise structures. Therefore, the goal of this investigation is to perform a parametric study to determine the influence of various parameters on the design of timber high-rise structures and assist structural engineers in making well-argued decisions during the preliminary design phase. The preliminary design parameters to be studied in the parametric study are: stability system design, connection stiffness and building height. The ranges for the parameters were selected based on extreme values such that clear trends regarding their influence on design could be visualized. This decision limits the design feasibility of some configurations studied in this investigation. The selected stability systems to be studied are glulam frame, CLT core and glulam diagrid. The design verification for each design alternative is done using ULS and SLS criteria provided by Eurocode, as well as a simplified method to estimate the dynamic response of the structure. Finally, the sizing of the structural elements and data collection was done by the implementation of evolutionary algorithms. From the data collected it was determined that the most influential design parameter for the design of timber high-rise structures is the stability system selection given that it determines the global stiffness, which showed a significantly higher influence on the dynamic response of the structure than its self-weight. Moreover, the efficiency of the different stability systems was assessed based on the maximum slenderness they could achieve compared to the amount of material they required. Based on this definition, it was determined that the glulam diagrid is two times more efficient than the CLT core and three times more efficient than the glulam frame. The efficiency of the glulam diagrid is caused by its high global stiffness provided by the triangular configuration of the diagonal elements. These observations prove that the effect of timber’s low density can be mitigated by the implementation of efficient stability systems. The influence of connection stiffness was determined to be directly related to the ability of the stability system to provide lateral stability to the structure. The influence of this parameter on form stable structures such as the CLT core and the glulam diagrid, proved to be nearly negligible, while for non-form stable structures such as the glulam frame it proved to be highly influential. However, it was also determined that the addition of rotational stiffness in the connections causes an exponential increase of the costs and environmental footprint of the structure, which decreases their design feasibility. Finally, the influence of building height on the design is visualized by its effect on the dynamic response of the structure caused by the logarithmic increase of the wind speed as this parameter increases, as well as a decrease of the global stiffness proportional to the efficiency of the stability system.Civil Engineerin
Setting of Preventive Maintenance Processes in the Company XY
No full textTato diplomová práce se zabývá lepším nastavením procesů v oblasti preventivní údržby strojního zařízení. Hlavním cílem této práce je nalezení cesty, jak skutečně zajistit provádění preventivní údržby strojního zařízení. V teoretické části autor shrnul současnou situaci v oblasti údržby strojního zařízení. Následuje část analytická, zaměřená na rozbor problematických úseků. Projekt již navrhuje konkrétní řešení a implementaci procesů, pravidel pro zajištění skutečného provádění preventivní údržby."This dissertation is engaged in a better setting processes in the area of preventive mainte-nance of the machinery. The main objective of this work is to find ways to actually provide preventive maintenance of machinery. In the theoretical part, the author summarized the current situation in the maintenance of the machinery. Next follows the analytical part which is focused on the analysis of the problematic sections. Specific solutions, implemen-tation processes and rules to ensure the actual implementation of preventive maintenance are also included in the project.Ústav průmyslového inženýrství a informačních systém
Project of Total Productive Maintenance Tools Implementation in Novogear, spol. s.r.o. Focused on Increasing Overall Equipment Efficiency
No full textTato diplomová práce se zabývá problematikou implementace nástrojů totálně produktivní údržby na vybrané pilotní pracoviště. Hlavním cílem této práce je zvýšení celkové efektivi-ty na výrobních zařízeních pracoviště. V teoretické části autor shrnul poznatky o totálně produktivní údržbě. V další části je pak provedena analýza pracoviště s důrazem na identi-fikaci ztrát. V reakci na analytickou část je vytvořen projekt, ve kterém jsou shrnuty návrhy pro úspěšnou implementaci TPM a zvýšení celkové efektivnosti zařízení.This thesis deals with the implementation of tools totally productive maintenance in se-lected pilot workplace. The main aim of this work is to increase the overall equipment effi-ciency. In the theoretical part, the author summarized the facts of totally productive main-tenance. The next part is about analysis of the workplace, with an emphasis on identifying losses. In response to the analytical part the project is created, which summarizes sugges-tions for successful implementation of TPM and increasing overall equipment efficiency.Ústav průmyslového inženýrství a informačních systémůobhájen
Industrial engineering - Trends of performance raising through lean process management
No full textJednotlivé kapitoly jsou věnované aktuálním trendům v prezentované oblasti, jsou navrženy metodiky pro implementaci vybraných konceptů zeštíhlování výrobních a administrativních procesů. Nezbytnou součástí je jejich propojení na týmovou práci, bez které by jakékoliv úsilí o zvyšování výkonnosti, produktivity a efektivnosti zejména ve výrobních a administrativních procesech bylo jenom marnou snahou. V celé publikaci jsou použity výsledky dotazníkových šetření, realizovaných přímo autorem publikace ve vybraných průmyslových firmách v České republice.Individual chapters are devoted to current trends in the field presented, there are designed methodology for the implementation of selected concepts downsizing of manufacturing and administrative processes. An essential part there is their connection to teamwork, without which any effort to increase efficiency, productivity and effectiveness especially in the manufacturing and administrative processes were only futile effort. Throughout the publication, the results of surveys, implemented directly by the author of the selected industrial companies in the Czech Republic were presented.P(EE2.3.20.0147
Parametric study regarding the influence of preliminary design parameters of a long-span timber footbridge on the human-induced dynamic behaviour
No full textDynamic behaviour often is a topic of concern in the design of pedestrian bridges. It is time-consuming to assess and little is known about the way it is influenced by the characteristics of a bridge. In many cases, a bridge needs testing after is has been finished to determine the specifications of a damper. Striving to reduce the environmental impact of bridges, there lies a great potential in using materials with a low environmental impact, such as timber. This research combines the lack of knowledge about dynamic behaviour of footbridges with the need for using timber instead of other materials. It consists of two parts. The first part, the parameter study, investigates the influence of three preliminary design parameters on the dynamic behaviour of a long-span timber footbridge, namely the pylon height, the pylon shape and the amount of cables. The second part, the optimisation study, examines to what extent it is possible to design a long-span timber footbridge that does not need dampers to control excessive vibrations.To this end, a parametric model of a bridge was made in which parameters can be varied and optimised to create realistic design variants. To be able to optimise taking into account dynamic behaviour, a python script was written to automatically determine the type of modes. The results of the parameter study show that the dynamic behaviour can be influenced by the parameters, although the results depend on the specific model, dimensions, parameter values and damping value. The results of the second part show that a with a 14% increase in mass a design variant that does not need dampers to control excessive vibrations can be obtained.Civil Engineerin
The Entrance of Slovak Companies to the Russian Market
No full textAko už aj názov témy napovedá, dizertačná práca je venovaná jednej z krajín čoraz viac sa profilujúcej skupiny BRIC, energetickej superveľmoci a najväčšej krajine na svete - Ruskej federácii z pohľadu medzinárodného obchodu. Autorka vo svojej práci popisuje charakteristiky tejto krajiny ako atraktívne ekonomické lákadlá pre slovenské spoločnosti, ktoré využívajú alebo majú záujem využiť tržný a ekonomický potenciál a preniknúť na ruský trh. Dôraz je zároveň kladený na špecifiká a bariéry, s ktorými sa spoločnosti stretávajú. Hlavným prínosom práce je navrhnutá metodika, ktorá popisuje atribúty ovplyvňujúce úspešný vstup na ruský trh slovenských spoločností v troch oblastiach: - štruktúra zamestnancov v novovznikajúcom manažérskom tíme vysielaného na ruský trh - proces získavania informácií a realizácia medzinárodného marketingového výskumu - kritéria výberu konkrétnej formy vstupu Prínosom práce bude metodika, ktorá bude aplikovateľná do podmienok konkrétneho tržného a firemného prostredia.As the title of this thesis already suggests, this work is devoted to one of the country is increasingly profiling BRIC group, an energy superpower and the greatest country in the world, the Russian Federation in terms of international trade. The author will try to introduce the characteristics of this country as attractive economic inducements for Slovak companies wishing to make use of market and economic potential and to penetrate the Russian market. Emphasis will be placed on the specifics and barriers which companies face with. The main contribution of the thesis is to propose a methodology of atributes for international management, which has influence for successful entrance of Slovak companies at the Russian market. The methodology is described in these three fields: - a structure of employees in new manager team at the russian market, - prices of receiving information and realization of international marketing research - criteria for choice of entry form. The thesis benefits from the conclusions that are applicable to specific market conditions and business environment.Ústav managementu a marketinguobhájen
Project of Lean Administration in the Process of Production Data Collection in the Company Brose CZ spol. s. r. o
No full textTato diplomová práce je zaměřena na zeštíhlení administrativních procesů ve sběru výrobních dat ve společnosti Brose CZ spol. s. r. o. Cílem je snížit pracnost a čas práce v procesu vykazování práce. Teoretická část obsahuje poznatky, které dále slouží jako podklad pro zpracování analytické a projektové části diplomové práce. Analytická část je nejprve zaměřena na analýzu jednotlivých článků v procesu vykazování, a dále na proces jako celek. V analýze byl zjištěn nedostatek v procesu vykazování, konkrétně s výkazy práce, které jsou velmi rozsáhlé a jejich zpracování časově náročné. V projektové části je vytvořen návrh nového výkazu práce, jeho nastavení s pomocí maker a standardy pro práci s ním, díky čemuž se podařilo práci s výkazy zkrátit a zjednodušit. Projekt je finančně i časově zhodnocen. Autorka uvádí i další návrhy, které lze využit v budoucnu.This diploma thesis is focused on lean administration in the process of production data collection in the company Brose CZ spol. s. r. o. The aim of this thesis is to reduce complicated and time-consuming work in process of work report. The theoretical part contains information which also serves as a basis for analytical and project part. The analytical part is first focused on analysis of each part in the process and continue as analysis of all processes. In analytical part have been found out problem with work statements including their big size and long time for their processing. Project part contains a new draft of work statement, its setting with macros, standards how to work with them. These changes will improve whole process, which is timely reduced and work statements are easier for processing. The project is financially and timely evaluated. The author presents also other suggestions that can be used in the future.Ústav průmyslového inženýrství a informačních systém
A computational study on the application of efficient dual structural systems for achieving desirable comfort levels in timber high-rise structures
No full textCivil Engineering | Building Engineering - Structural Desig
