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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.
101

Desenvolvimento de processo para incorporação da etapa de otimização de parâmetros analíticos em procedimentos automatizados de análises por injeção sequencial

Soares, Vitória Regina Bispo January 2009 (has links)
Submitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2016-08-31T12:55:32Z No. of bitstreams: 1 Dissertação de Vitória Regina B. Soares.pdf: 4140552 bytes, checksum: cfbde6e68fae6f80c2843951ea61ffde (MD5) / Approved for entry into archive by Vanessa Reis (vanessa.jamile@ufba.br) on 2016-09-02T15:48:05Z (GMT) No. of bitstreams: 1 Dissertação de Vitória Regina B. Soares.pdf: 4140552 bytes, checksum: cfbde6e68fae6f80c2843951ea61ffde (MD5) / Made available in DSpace on 2016-09-02T15:48:05Z (GMT). No. of bitstreams: 1 Dissertação de Vitória Regina B. Soares.pdf: 4140552 bytes, checksum: cfbde6e68fae6f80c2843951ea61ffde (MD5) / CNPq / Para aumentar o nível de automatização no desenvolvimento de procedimentos analíticos em sistemas de análises por injeção sequencial foi proposta uma rotina em linguagem QuickBasic que permitia incorporar a etapa de otimização multivariada como uma das etapas do processo analítico, simplificando o gerenciamento do sistema. A rotina foi desenvolvida para sistemas de análises por injeção sequencial, uma vez que esta estratégia de análises em fluxo pode executar diferentes procedimentos sem reconfiguração do sistema. O processo automatizado de otimização, calibração e medida foi aplicado para as determinações espectrofotométricas de ferro total e de captopril em medicamentos, empregando os métodos da 1,10-o-fenantrolina e do acoplamento com o radical iminoquinona, respectivamente. Para rotina de otimização desenvolvida foi selecionado o sinal líquido como resposta e a intervenção do operador se restringiu a selecionar as variáveis do sistema sob otimização, definir os domínios experimentais de cada variável e escolher o desenho experimental a ser executado. Entretanto, caso as condições ótimas não fossem encontradas no domínio experimental selecionado a rotina foi programada de modo a sugerir ao operador os deslocamentos que deveriam ser feitos nos domínios experimentais. Os fatores investigados para a determinação de ferro total em amostras de fortificantes foram os volumes amostrados dos reagentes e a vazão da solução transportadora, enquanto que para o captopril foram investigados os volumes amostrados dos reagentes, a acidez da solução do oxidante e da solução da amina aromática, além da vazão da solução transportadora. Nas condições otimizadas os graus de sopreposição de zonas para ambos os procedimentos variaram entre 0,79 e 1, indicando a eficiente mistura das soluções das amostras e reagentes no percurso analítico. O procedimento SIA otimizado para a determinação do teor de ferro total em fortificantes apresentou baixa dispersão (<2%), limite de quantificação de 1,43 mg L-1 , com consumo de 0,7 mg de 1,10-o- fenantrolina e 6 mg de ácido ascórbico por determinação. A freqüência analítica foi de 60 determinações h-1 e os resultados obtidos para diferentes amostras de fortificantes foram comparados com o mesmo método em batelada e não apresentaram diferenças significativas para 95% de confiabilidade. Trinta determinações de captopril em produtos farmacêuticos por hora de trabalho foram executadas pelo procedimento de análise por injeção seqüencial otimizado consumindo 0,15 mg de sulfato de N-N-dimetil-p-fenilodiamina (DMPD) e 4 mg de FeCl3.6H2O por determinação. Faixa linear de trabalho entre 2,65 e 100 mg L-1 e boa precisão (ca. 1%) foram também obtidas. Os teores de captopril em amostras de produtos farmacêuticos foram determinados pelo procedimento proposto e os resultados, quando comparados com o método iodométrico de referência, não apresentaram diferenças significativa para 95% de confiança / A QuickBasic routine was proposed to increase the automatization in the development of analytical process for sequential injection analysis system in order to permit the inclusion of multivariated optimization as one of the steps of analytical process leading to simplify the system management. The routine was developed for sequential injection analysis once this flow analysis strategy can perform diverse analytical procedures in the same manifold. The automatized process for optimization, calibration and measurement was applied to determine the total iron concentration in pharmaceutical formulations by 1,10-o-phenantroline spectrophotometric method, as well as captopril in pharmaceutical formulations based on coupling reaction with iminoquinone radical. Sensitivity (net signal) was selected as dependent parameter for the optimization step and the analyst action was limited to select the parameters to be optimized and the experimental design to be used as well to define the experimental domains of all parameters. A decision of the analyst was also expected in the cases where the optimal conditions were not attained in the domains previously selected and, once new domains are suggested by the software, a new sequence of experiments will be carried out with human agreement. Aliquots volumes of reagents and carrier solution flow rate were the parameters evaluated for total iron determination in supplements, while the acidity and volumes of reagents solutions and the flow rate of carrier solution were optimized for captopril determination flow procedure. For both analytical procedures in the optimized conditions the index of zone overlapping was varied from 0.79 and 1, suggesting an efficient mixture of solutions in the analytical path. The optimized SIA procedure for total iron determination in supplement samples has low dispersion (<2%), limit of quantification of 1.43 mg L-1, leading to consume 0.7 mg of 1,10-o-phenantroline and 6 mg of ascorbic acid per determination. An analytical throughput of 60 determinations h-1 was estimated and no significant difference (95% confidence level) was observed by comparing the results obtained by the flow method in optimized conditions and those obtained by the spectrophotometric procedure in batch mode. Thirty captopril determinations in pharmaceutical formulations per hour were carried out by employing the optimized sequential injection analysis procedure, consuming 0.15 mg of N,N-dimethyl-p-phenylenediamine (DMPD) and 4 mg of FeCl3.6H2O. Linear range from 2.65 to 100 mg L-1 with high precision (ca. 1%) was also obtained and no significant differences (95% confidence level) were observed by comparing the optimized flow procedure with the iodometric reference method.
102

K jazyku a stylu událostí let 1971-75 v československých denících (Rudé právo, Mladá fronta, Svobodné slovo) / About a language and style of the events in the years 1971 {--} 75 in Czechoslovak journals (Rude pravo, Mlada fronta, Svobodne slovo)

SVOBODOVÁ, Lenka January 2008 (has links)
This graduation thesis is focused on the description of the language methods used in the texts of the most significat Czechoslovak journals in the years 1971 {--} 1975. The first part of thesis gives a brief characteristics of the publicist{\crq}s style and defines journalistic dilemma. Separated chapters give a brief summary of the events in the years 1971 {--} 75 and explain history and structure of the most significant Czechoslovak journals in the time of my observation. The second and also the most important part of my thesis is searching lexical methods used in texts: fashion words, cliché, phraseologisms, foreign words etc. Thesis is focused on the description of these methods and the characteristic of their practical use in the text.
103

System Upgrade Verification : An automated test case study / Verifikation av Systemuppdatering : En fallstudie om automatiserad testning

Rotting Tjädermo, Viktor, Tanskanen, Alex January 2019 (has links)
We live in a society where automatization is becoming more common, whether it be cars or artificial intelligence. Software needs to be updated using patches, however, these patches have the possibility of breaking components. This study takes such a patch in the context of Ericsson, identifies what needs to be tested, investigates whether the tests can be automated and assesses how maintainable they are. Interviews were used for the identification of system and software parts in need of testing. Then tests were implemented in an automated test suite to test functionality of either a system or software. The goal was to reduce time of troubleshooting for employees without interrupting sessions for users as well as set up a working test suite. When the automated testing is completed and implemented in the test suite, the study is concluded by measuring the maintainability of the scripts using both metrics and human assessment through interviews. The result showed the testing suite proved maintainable, both from the metric point of view and from human assessment.
104

Návrh robotické buňky pro navařování sklářských forem / Design of a Robotic Cell for Additive Manufacturing of Glass Forms

Záveský, Filip January 2018 (has links)
This diploma thesis contains description of design of robotic cell, which automates process of glass neck ring welding. Robot arm is used as manipulator of part between entry conveyor, induction heating, automatic welding machine and outgoing palette. Construction process contains of making layout of the cell, design of needed workstations and minimalize risk of harm for human operator. The final construction design is simulated to verify robot reach and find manipulation time.
105

Automatizace a optimalizace konstrukce a pracovního procesu horizontální štípačky na palivové dřevo / Automatization a optimalization of desing and proces of firewood horizontal log splitter

Čechman, Jan January 2019 (has links)
Diploma thesis is focused on design and optimalization of log splitter. Thesis consists of search of log splitter types and common used technologies, mechanical design, optimalization, design of propultion system, risk analysis and financial overview. Log splitter is designed to meet needs of automatization. Safety, industrial design and ergonomy has been considered in the design.
106

Strojové vidění pro navádění robotu / Machine vision for robot guidance

Grepl, Pavel January 2021 (has links)
Master's thesis deals with the design, assembly, and testing of a camera system for localization of randomly placed and oriented objects on a conveyor belt with the purpose of guiding a robot on those objects. The theoretical part is focused on research in individual components making a camera system and on the field of 2D and 3D localization of objects. The practical part consists of two possible arrangements of the camera system, solution of the chosen arrangement, creating testing images, programming the algorithm for image processing, creating HMI, and testing the complete system.
107

Návrh informačního systému / Information System Proposal

Výmola, Petr January 2010 (has links)
Because of a growing number of services offered by the Masaryk University to its students, and because of the ever-changing legislation of the Czech Republic, a need for an implementation of a new information system, capable of processing payments for university’s services, has arisen. The goal of this thesis is to analyse the current condition of payments at the university, consider users’ demands, choose an appropriate information system and project its implementation. It is utterly necessary to keep the costs of implementation at acceptable levels and above all the system must be able to be operated without the need for new employees. The proposed system must be universal because of various natures of services offered and goods sold, as well as it must be efficient. It is required that the system will be able to handle the growth of both number of clients and provided services.
108

Investiční strategie založená na Bollingerových pásmech / Investment Strategy Based on Bollinger Bands

Borek, Martin January 2015 (has links)
This thesis deals with the automatization and comparison of two different strategies for the forex markets, based on the indicator, one from the tools of technical analysis, called Bollinger Bands. Both strategies are first optimized and then compared. Automatization of strategies will be implemented by? using the Meta Quotes Language for MetaTrader broker and its testing will be done on historical data. The goal with this thesis is the operational objective application of the better strategy in the environment of real market.
109

Řízení inteligentních pohonů IclA s využitím sběrnice CAN / Control Design of Intelligent Integrated closed loop Actuator by force of CAN

Škranc, Martin January 2009 (has links)
This diploma thesis deals with automatization technology by B&R Automation Company. CANopen protocol is used for communication and control design of actuator part of omni-directional mobile robot. The control algorithms are implemented for compact PLC automata X20 series. The PLC X20 communicates with PC by means of Ethernet TCP/IP protocol. There are four motion control patterns implemented. The robot uses three IclA D065 actuators. This research has been supported by the Czech Ministry of Education in the frame of MSM 0021630529 Research Intention Inteligent Systems in Automation.
110

Response to Intervention i matematik : - En väg att nå bestående och god taluppfattning? / Response to Intervention in Mathematics : - A way to achieve consisting and foundational number sense?

Rosberg Andersson, Annica, Stening, Jenny January 2019 (has links)
Syftet med följande studie är att studera vilka bestående resultat som kan utläsas ett år efter en avslutad pilotstudie av en Response to Intervention (RTI) i grundläggande taluppfattning. En jämförelse har genomförts mellan en experimentgrupp och en referensgrupp, där referensgruppen inte tagit del av RTI. Studien tittar även närmare på hur de elever som uppvisade störst svårigheter i grundläggande taluppfattning lyckades i uppföljningsstudien ett år efter avslutad intervention. Uppföljningsstudien är kvantitativ och baseras på testresultat som genomfördes före och efter RTI. Uppföljningsstudien använde sig av exakt samma tester och genomfördes på exakt samma vis som den tidigare pilotstudien för att göra tillförlitligheten så stor som möjligt. Testerna som användes var AG 1 på 3 minuter och AG 2 på 4 minuter.  Metoden har varit kvantitativ där testresultat från AG 1 och AG 2 samlades in och analyserades. Tillvägagångsättet har varit att sammanställa och dokumentera både tidigare tester från pilotstudien och testerna i uppföljningsstudien. Därefter analyserades resultaten på testerna för att studera likheter och skillnader mellan experimentgrupp och referensgrupp. Studien visar på en tydlig effekt av RTI där experimentgruppens elever når höga testresultat på AG 1 och AG 2 i uppföljningsstudien maj 2019. Resultatet stärker teorin om att RTI är en intervention som kan ge positiva och bestående effekter på elevers grundläggande taluppfattning över tid. / The aim of this study is to investigate if Response to Intervention (RTI) was successful in terms of achieving consisting results, one year after a RTI of foundational number sense. A comparison is made between an experiment group and a reference group, where the reference group was not participating in the RTI. Additionally, this study has an aim to investigate how the students showing the greatest difficulties in foundational number sense succeeded in a follow-up study one year after the intervention. The follow-up study is quantitative and based on tests results performed before and after the RTI. The follow-up study used the same tests performed with the same circumstances as the earlier pilot study to achieve reliability. The test was AG 1 (Diamant) in 3 minutes and AG 2 (Diamant) in 4 minutes.     A quantitative method was used where test results from AG 1 and AG 2 were collected and analyzed by quantitative measures. A compilation of the results were made and documented, both previous tests results from the pilot study, and test results from the follow-up study. Thereafter, the results were analyzed to discover similarities and differences between the experimental-group and the reference-group. The study shows a significant effect of the RTI where the experimental group´s students reach high test result on AG 1 and AG 2 in the follow-up study May 2019. The result strengthens the theory that RTI is an intervention that can provide positive and consisting effects on student’s foundational number sense over time.

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