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Dissertations / Theses on the topic 'Timer'
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1
Al, Homsi Mustafa. "Ultrasonic timer system." Connect to this title online, 2005. http://hdl.handle.net/1811/272.
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Senior Honors Thesis (Electrical and Computer Engineering)--Ohio State University, 2005.Title from first page of PDF file. Document formatted into pages; contains 29 p.; also includes graphics (some col.). Available online via Ohio State University's Knowledge Bank.
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Dong, Zhaoqing Sabrina 1977. "Hardware-assisted timer protocol for high resolution global time synchronization." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86639.
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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.Includes bibliographical references (leaf 114).
by Zhaoqing Sabrina Dong.
M.Eng.
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Jiang, Yonglin. "Timer management in Sandia XTP." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ59328.pdf.
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Grobler, Johannes Petrus. "Design and implementation of a high resolution soft real-time timer." Diss., Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-08282007-095022.
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Chekwube, Zikora Azubuike. "Building a timer controller circuit, with password access." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5793.
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The microcontroller and the coding is the heart of making a timer. The strategic release planning is gotten from the concept of how a door machine with password access functions. In this thesis project, all that has been studied in school such as circuit theory, electronics, digital design and microprocessors basic and programming course are combined to the success of this project. Therefore the objective is producing a practical knowledge of what has been studied which is the timer with password access. The method used was an inspiration gotten after reviewing many materials in some respective topic related to designing a timer. The particular method comes from creating an SPI Interface from the Programmer to the Microcontroller to Make Transferring More Convenient. The performance of the MCU, LCD and keypad was just as was expected in the software code and hardware also. The password is inputted, timer is set appropriately and timer runs till port is opened. To conclude, the result can be achieved in different method but this method was for an easy method for beginners.0764353558
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Kim, Bonam Sun Min-Te. "Timer-based protocols in ad hoc and sensor networks." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Dissertations/KIM_BONAM_59.pdf.
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Rajaram, Vijay Sundar. "Session initiation protocol for wireless channels." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4917.
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The Session Initiation Protocol (SIP) was designed for wire line networks. It was
developed to initiate, modify and terminate sessions between two hosts on a network.
When the Internet expanded to include wireless hosts, SIP did not scale well for these
wireless hosts because of the nature of the wireless channel. Also, there were issues
with mobility and real time communication. This thesis proposes improvements to
some of the extensions to SIP, for better performance over wireless channels. We
investigate the call setup time for various transport mechanisms viz. TCP and UDP,
and study the performance of a dynamic Session Timers compared to the current
standard of a periodic refresh mechanism, where the frequency of UPDATEs vary with
the condition of the wireless channel. We also propose a handoff algorithm that
reduces the handover time with decreased packet losses.
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Salem, Danny. "Using the Tandem Fluorescent Timer as a Reporter of Dynamic Gene Regulation." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39021.
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I propose the use of the tandem fluorescent timer protein as a reporter of dynamic gene regulation. The tandem fluorescent timer is a fusion of two fluorophores with different maturation kinetics whose fluorescence ratio is a reporter of protein age. Traditional approaches to live single-cell tracking of dynamic gene expression involve the use of destabilized fluorescent reporters. The reduced stability of these reporters improve performance but also result in reduced signal and an increased signal to noise ratio. I first develop a platform to test reporter performance by designing and implementing an inducible synthetic network orthogonally in S. cerevisiae cells and by developing a microfluidics-enabled live cell-tracking pipeline. To test the performance of different reporters, I develop an algorithm to decode the underlying regulatory dynamic signal of a fluorescence profile. I then simulate the fluorescence output of my platform under dynamic regulatory signaling to demonstrate the potential reporter performance of a stable timer protein. Finally, I conduct live cell-tracking experiments of yeast cells expressing the timer under a periodic signal to test in vivo performance of the tandem fluorescent timer. I demonstrate that compared to a traditional stable fluorescent reporter, the tandem fluorescent timer is more accurate when tracking faster periodic signals and it is more robust to global fluctuations.
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Youthed, Andrew David. "Designing and implementing a new pulsar timer for the Hartebeesthoek Radio Astronomy Observatory." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1005243.
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This thesis outlines the design and implementation of a single channel, dual polarization pulsar timing instrument for the Hartebeesthoek Radio Astronomy Observatory (HartRAO). The new timer is designed to be an improved, temporary replacement for the existing device which has been in operation for over 20 years. The existing device is no longer reliable and is di±cult to maintain. The new pulsar timer is designed to provide improved functional- ity, higher sampling speed, greater pulse resolution, more °exibility and easier maintenance over the existing device. The new device is also designed to keeping changes to the observation system to a minimum until a full de-dispersion timer can be implemented at theobservatory. The design makes use of an 8-bit Reduced Instruction Set Computer (RISC) micro-processor with external Random Access Memory (RAM). The instrument includes an IEEE-488 subsystem for interfacing the pulsar timer to the observation computer system. The microcontroller software is written in assembler code to ensure optimal loop execution speed and deterministic code execution for the system. The design path is discussed and problems encountered during the design process are highlighted. Final testing of the new instrument indicates an improvement in the sam- pling rate of 13.6 times and a significant reduction in 60Hz interference over the existing instrument.
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Ross, Erin Michelle. "The Influence of Head and Eye Movements on Coincidence Anticipation Timing." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555446813400109.
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Pierce, Lain Xylia. "Analysis of Rhythmic Gene Transcription using the TimeR, a Novel Technology to Capture Zebrafish Embryos." Cleveland, Ohio : Case Western Reserve University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=case1212770242.
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Борисенко, Олексій Андрійович, Алексей Андреевич Борисенко, Oleksii Andriiovych Borysenko, and Д. М. Полунов. "Биномиальный задатчик времени." Thesis, Издательство СумГУ, 2006. http://essuir.sumdu.edu.ua/handle/123456789/17850.
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Hsu, Julia C. "Design, fabrication, and testing of a mechanical timer in application of a stored-heat solar cooker." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92186.
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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.Cataloged from PDF version of thesis.
Includes bibliographical references (page 45).
There is a large need in third-world tropical areas for a method of cooking in which users need minimal resources and traversing to heat food at night. A solution to this problem is to create a stored-heat solar cooker that may be left during the day and acquired at night to cook meals. Previously, a prototype had been built without much success in the timing of the device. This thesis aims to solve this problem by designing, building, and testing a mechanical timer. Several design choices were narrowed to the fabrication and testing of a hydraulic design similar to a gas spring. After this particular iteration of the prototype, proof of concept seems feasible. The next iterations of this timer should incorporate several design changes regarding the o-ring sealing and other various details for proper assembly and decreased cost.
by Julia C. Hsu.
S.B.
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Petrus, Matthew J. "Mechanisms of cell cycle remodeling at the MBT during the development of Xenopus laevis embryos." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/32359.
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During the early development of Xenopus laevis embryos, cells divide without checkpoints. At the midblastula transition (MBT), the cell cycle is remodeled as the division time lengthens and checkpoints are acquired. Initiation of the MBT depends upon the degradation of maternally supplied cyclin E, which is the regulatory partner of the cyclin dependent kinase, Cdk2. To study the program that drives cyclin E degradation and cell cycle remodeling at the MBT, embryos were treated with two cell cycle inhibitors, GST-D34Xic1 and XChk1.
Injection of embryos with GST-D34Xic1, a stoichiometric inhibitor of cyclin E/Cdk2, delays degradation of cyclin E and onset of the MBT. GST-D34Xic1 lowers Wee1 level, a kinase that maintains Cdks in an inactivate state. Eventual degradation of cyclin E is preceded by degradation of GST-D34Xic1. The mathematical modelers, Andrea Ciliberto and John Tyson, incorporated the data into a kinetic model and set of ordinary differential equations. The model accurately described the experimental data and made additional predictions, which were tested experimentally.
Additionally, embryos were injected with mRNA encoding XChk1, a kinase that activates Wee1 and inhibits Cdc25, the phosphatase opposing Wee1. Like GST-D34Xic1, XChk1 inhibits cyclin E/Cdk2 and delays the degradation of cyclin E. In contrast to GST-D34Xic1, XChk1 elevates the level of Wee1 at a time when sibling controls begin the MBT, despite cell cycle arrest.
Since XChk1 inhibits both Cdk1 and Cdk2, and GST-D34Xic1 inhibits only Cdk2, we propose Cdk1 destabilizes Wee1, whereas Cdk2 elevates Wee1 level. Prior to the MBT, when cyclin E/Cdk2 is active, Wee1 is maintained. After cyclin E/Cdk2 is destroyed at the MBT, Wee1 is degraded.
Master of Science
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Matsuda, Naoki. "Physiological study on the transgenerational timing mechanism in an aphid." Kyoto University, 2020. http://hdl.handle.net/2433/253117.
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Соколенко, Б. В., Д. А. Полетаев, Б. А. Марущак, and К. А. Баша. "Энергосберегающее устройство на основе таймерного выключателя." Thesis, Издательство СумГУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/27711.
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В настоящее время, наряду с использованием альтернативных источников, важно рационально использовать уже произведенную. Существует целый ряд помещений, где потребность в постоянном освещении отсутствует: лестничные клетки, рекреации [1]. Однако, зачастую электроэнергия на подсветку данных помещений расходуется круглосуточно. Таймерные устройства позволяют включать освещение на определенный промежуток времени при поступлении запускающего сигнала.
При цитировании документа, используйте ссылку http://essuir.sumdu.edu.ua/handle/123456789/27711
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Fallon, Paul. "Measuring tourist satisfaction with Orlando, Florida: A comparison of conceptual models and first-timer and repeater segments' behaviour." Thesis, University of Salford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492398.
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Tourist satisfaction represents the 'outcome' from the destination experience. It also represents a significant 'input' into the future decision-making of both tourists, in terms of repeat visitation and recommendation, and management, for example in terms of resource allocation. However, the measurement of tourist satisfaction at destination level needs further consideration, particularly in terms of the contribution of destination attributes.
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Nguyen, Nhat. "Development and implementation of a DSP based air detector system to prevent embolism during hemodialysis therapy." [Tampa, Fla] : University of South Florida, 2005. http://purl.fcla.edu/usf/dc/et/SFE0001378.
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Frilund, Erik, and Lisa Widegren. "Compliance during orthodontic treatment with removable appliances when using two types of reminders, assessed by timer modules - A pilot study." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19794.
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INTRODUKTION OCH SYFTE: Tidigare studier av kooperation och ortodonti har visat att ett av de bästa sätten att öka patienternas kooperation är genom att övervaka användningstiden och påminna patienten om att använda sin apparatur. Den här pilotstudiens syfte var att undersöka om någon utav två olika typer av påminnelser objektivt ökar användningstiden vid behandling med avtagbar apparatur eller inte.MATERIAL OCH METOD: 18 patienter i åldrarna 9-14 års ålder från en patientpopulation som behandlades vid avdelningen för Ortodonti, Odontologiska Fakulteten på Malmö Högskola, deltog i studien. Patienterna hade olika typer av bettavvikelser som gjorde dem behandlingsbara med antingen van Beek eller expansionsplåt. Patienterna placerades slumpmässigt in i en av tre grupper, alarm, kalender eller kontrollgrupp. Användningstid registrerades objektivt med en TheraMon®-timermodul som placerades inuti den ortodontiska apparaturens akrylbas.RESULTAT: Alarm-gruppen hade högst genomsnittlig användningstid. Kontrollgruppen hade något lägre användningstid än alarmgrupppen och kalendergruppen hade minst genomsnittlig användningstid. Det var skillnad på de olika behandlingstyperna, då behandlade med expansionsplåt hade bättre genomsnittlig användningstid än patienter behandlade med van Beek. Data testades för statistisk signifikans med Anova och t-test, ingen statistisk signifikans fanns.KONKLUSION: Den här studiens resultat tyder på att en påminnelse i form av ett alarm verkar vara bättre på att öka patienters kooperation än en kalender eller ingen påminnelse alls. Detta indikerar att det finns ett underlag för att i framtida studier vidare undersöka hur påminnelser via mobiltelefon påverkar compliance, till exempel påminnelse via en app. Patienter som behandlas med expansionsplåtar verkar ha en bättre compliance än patienter behandlade med van Beek-aktivatorer, därför bör framtida fokus läggas på att förbättra kooperationen hos patienter som behandlas med van Beek-aktivatorer. Framtida studier bör endast innefatta en typ av ortodontisk apparatur, till exempel van Beek. Fler patienter krävs i framtida studier för att säkerställa statistiskt signifikanta resultat.INTRODUCTION AND PURPOSE: Earlier studies on compliance and orthodontics have shown that one of the best ways to increase compliance is by supervising the wearing time. Compliance can also be increased by reminding the patient to use the removable appliance. This pilot study aims to investigate if any of two kinds of reminders objectively increase the compliance during orthodontic treatment with removable appliances or not.MATERIALS AND METHODS: 18 patients between 9-14 years of age were selected from a patient population attending the department of Orthodontics, Faculty of Odontology, Malmö University. They presented different types of malocclusion which made them candidates for treatment with either van Beek-appliances or expansion plate. The patients were randomly placed in one of three groups; alarm, calendar or control group. Wearing time was objectively collected from the TheraMon®-module placed inside the acrylic base of the appliances. After the data collecting-phase was finished the data was tested with Anova and t-test to determine whether there was a significant difference between the groups.RESULTS: The alarm group had the highest average wear time. The control group had slightly lower average wear time than the alarm group, and the calendar group had the least amount of average wear time. There was a difference in average wear time between van Beek and expansion plate, with van Beek having a lower average wear time than expansion plate. Patients treated with expansion plates were more cooperative than patients treated with van Beek appliances. When data was tested for significance, no statistical significance was found.CONCLUSION: The study concludes that an alarm type of reminder appears to be better at improving wear time than a calendar or no reminder at all. This indicates that for future studies there might be a reason to develop a reminder for patients, for example an app. The study concludes that patients with expansion plates appear more cooperative than patients using van Beek appliance, so therefore focus should be on improving cooperation for patients using these types of appliances. This study shows that future studies should use one type of appliance, e.g. van Beek. More patients are needed in future studies to achieve statistical significant results.
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Selhorst, Rosalie. "Trädens inre och yttre ljud - med olika mätmetoder." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-93665.
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Syftet med denna studie var att beskriva mätmetoder, som mäter träets egenskaper med hjälp av vågrörelser respektive mätmetoder som mäter träds egna vågrörelser. Vidare att undersöka hur människor uppfattar musik från trädens egna ljud (vågrörelser). Resultaten visar att det finns flera olika mätmetoder som främst mäter kvalité i träd och virke. Ytterligare två mätmetoder finns och de tar hjälp av sensorer, synthesizers och en örontrumpet, och mäter främst elektriska impulser, ljud och ljudvågor. Resultaten visar även att människor är positivt inställda till musik som kommer från träden. Slutsatsen som kan dras från detta arbete är att det finns många olika sätt att mäta och lyssna på träden på.The purpose of this study was to describe measurement methods, which measure the properties of the wood using wave movements and measurement methods that measure the tree's own wave movements. Further to investigate how people perceive music from the trees' own sounds (wave movements). The results show that there are several different measuring methods that primarily measure quality in trees and wood. Two other measuring methods are available, and they use sensors, synthesizers and an ear trumpet, and mainly measure electrical impulses, sounds and sound waves. The results also show that people are positively attuned to music that come from trees. The conclusion that can be drawn from this work is that there are many different ways to measure and listen to the trees.
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Fišer, Ondřej. "Časovač pro RC modely." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377326.
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This paper describes complete design of timer for RC models. Described timer has three PWM outputs. With these outputs it is possible to connect two independent servo-motors and engine controller. 1 signal. The whole is controlled by 8-bit microprocessor. The time records are stored in external EEPROM, that can be programmed using I2C. Paper further discuss design of programming, which can be easily programmed the memory of EEPROM by the PC or smartphone. The goal of this paper is to design and build high quality RC timer with accessories.
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DePatie, Nicholas. "Expression of Core Circadian Clock Genes Unable to Explain Changes in the Photoperiodic Timer Across Latitudinal and Altitudinal Gradients in Wyeomyia smithii." Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23149.
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Photoperiodism is the ability of plants and animals to utilize day length or night length to mitigate seasonal exigencies. The circadian clock allows organisms to organize daily demands. Both process are set by light, and for more than 80 years a functional relationship has been pursued. Previous experiments have revealed, through phenotypic expression, that the daily circadian clock and seasonal photoperiodic timer have evolved independently, yet molecular evidence is lacking. Herein, we use the mosquito, Wyeomyia smithii, to understand the relationship between the photoperiodic response, diapause, and the daily circadian clock. We measured variation in the formal properties of the core circadian clock over a latitudinal and altitudinal gradient which we compare to the critical photoperiod, a measure of diapause, over the same geographic gradient. We found that there is no correlation with any of the formal properties of the core circadian clock and critical photoperiod, indicating independent evolution.
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Kazlauskas, Mantas. "Eglės žievės drėgnio ir piltinio tankio pokyčio tyrimai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_144351-70407.
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Darbo objektas – Eglės žievė paimta iš lentpjūvių ir biokuro sandėliavimo vietų.
Darbo tikslas – Nustatyti eglės žievės, skirtos kūrenti šildymo katilines, masės ir tūrio kitimo dėsningumus.
Darbo metodai – Empirinio tyrimo metodas paremtas duomenų rinkimu – parenkant mėginius, sveriant medienos žievę ir ją džiovinant. Kiekybinis palyginimas - statistinis duomenų apdorojimas paremtas dispersine ir regresine analize. Visą tiriamąją medžiagą sudarė 68 mėginiai paimti iš lentpjūvių ir biokuro sandėliavimo vietų, o gautų rezultatų palyginimui buvo paimti duomenys iš UAB ,,Vilniaus energijos“ žaliavų apskaitos duomenų bazės (98 mėginiai). Vertinant susidariusios žievės kiekį ir jos energetinę vertę buvo pasinaudota Lietuvos nepriklausomų medienos matuotojų asociacijos duomenų baze.
Darbo rezultatai – Iš surinktų duomenų buvo nustatyta, kad didžiausias santykinis medienos žievės drėgnis lentpjūvėse yra lapkričio – sausio mėnesiais (55,5 – 62,62 %), o pagal ,,Vilniaus energija“ pateiktus duomenis lapkričio – kovo mėnesiais (56,35 – 60,62 %). Pavasarį medienai pradėjus džiūti, drėgmė išgaruoja, vandens kiekis medienoje pradeda mažėti. Mažiausias žievės drėgnis lentpjūvėse vasaros laikotarpiu yra birželio – rugsėjo mėnesiais (45 – 46 %), o pagal ,,Vilniaus energija“ pateiktus duomenis mažiausias žievės drėgnis būna gegužės – rugsėjo mėnesiais (35,66 – 40,42 %). Standartinė lentpjūvėse svyruoja nuo 0,45 iki 1,53 %, o pagal ,,Vilniaus energija“ duomenis nuo 0,71 iki 5,4 %. Įdomu tai... [toliau žr. visą tekstą]The Object of work – The Spruce bark taken from sawmills and biofuel storage places. The aim of the work – To determine the Spruce, used for burning boiler plants, bark wheight and dencity change regularities. The methods of work – The method is based on data collection – choosing the samples, drying and weighing a timber bark. Quantitative comparison – statistical data treatment in a variance and regression analysis. The investigated material were 68 samples, taken from sawmills and biofuel storage places. To compare the results data were taken from ,,Vilniaus energijos“ (limited liability company ) material accounting data base ( 98 samples). In assessing the amount of the bark and its energy value was used Independent Lithuanian Timber Measurers Association database. The results – The results shows that the biggest relative timber bark humidity in a sawmills is between November – January (55,5 – 62,62 %), according to the data from „Vilniaus energija“ November – March (56,35 – 60,62 %). In spring a timber starts to dry, the humidity level decreases, water amount in a timber starts to decrease. The lowest humidity in a sawmills is in summer between June – September (45 – 46 %), according to ,,Vilniaus energija“ data, the lowest bark humidity is between May - September (35,66 – 40,42 %). Standard humidity deflection in the sawmills varies from 0,45 to 1,53 %, according to ,,Vilniaus energija“ data, standard humidity deflection varies from 0,71 to 5,4 %... [to full text]
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Ekenståhl, Robert, and Oskar Medén. "Vilken hållfasthet har ett trädymlingsförband?" Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-24398.
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Ett sätt att öka mängden trä i byggnader är att ersätta stålförband i takstolar med ett trädymlingsförband. Det bör dock undersökas om trädymlingsförbandet har tillräckligt högt hållfasthetsvärde. Denna studie undersöker hållfastheten på träförband förankrade med trädymlingar. Dymlingarna har tre olika dimensioner (8, 10 och 12 mm) och förankras i förbanden genom svällning. Teoretiska beräkningar utförs med formler från Eurokod 5 (2004) för stålskruvar. Formlerna modifieras för att kunna tillämpas på trä istället för stål. Trycktester utförs på tio tvåplansskjuvnings-modeller per dymlingsdimension. Studien anses vara statistisk och sammanställs i normalfördelningskurvor. Av data från testerna räknas karakteristiska värden för trädymlingarna med säkerhetsmarginalen 95 %. Karakteristiskt hållfasthetsvärdet för trädymlingsförbanden blev 2100 N för 8 mm, 2300 Nför 10 mm och 4400 N för 12 mm.One way to increase the amount of wood in buildings is to replace framing tie with timber dowel joints. It has to be investigated if timber dowel joints strength value is high enough. This study investigates the strength of timber joints anchored with a dowel. The dowels have three different dimensions and were anchored in the joint by swelling. Theoretical calculations were made with formulas from Eurokod 5 (2004) for steel screws. The formulas were modified to be applied to wood instead of steel. Pressure tests wereperformed on ten double shear models per dowel dimension. The tests are considered tobe statistically and compiled in a normal distribution curve. Characteristic strength with thesafety margin of 95 % was calculated from the data from the tests. Characteristic strength for the timber dowel joints were 2100 N for 8 mm, 2300 N for 10mm and 4400 N for 12 mm.
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Barros, Sámia Valéria dos Santos. "Avaliação da qualidade da madeira de árvores da Amazônia por método não destrutivo de propagação de onda: tomógrafo de impulso e stress wave timer." Instituto Nacional de Pesquisas da Amazônia, 2016. http://bdtd.inpa.gov.br/handle/tede/2472.
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Fundação de Amparo à Pesquisa do Estado do Amazonas - FAPEAM
In order to evaluate forest species as an alternative to the timber market and to indicate tools for sustainable forest management plans for the valuation of trees in loco, helping in the decision making during pre-exploratory process, the present work aimed to characterize Amazonian woods through non-destructive techniques , Evaluating its internal quality, physical properties and dynamic modulus of elasticity (MOEd). Fieldwork was conducted at the experimental silviculture station ZF2, owned by INPA, located in BR 174, Manaus / Boa Vista. Twenty - nine trees were randomly selected in 01 (one) hectare, the diameter being measured and botanical material collected to identify all trees. Afterwards, the stress wave timer was used to measure the time traveled by the voltage wave in the tree in three directions (longitudinal, diagonal and transversal). In the same place in the DAP, the impulse tomograph was used to capture tomographic images of the trees. The trees were felled and a disk of each tree was removed for determination of the apparent density, basic, retractability and moisture content, and unfolded in logs of 4 m in length and in boards. From the time obtained with stress wave timer was determined the speed and modulus of dynamic elasticity of trees and by-products. To analyze the data, we used descriptive statistics, Tukey's test, Cluster analysis (clustering). The non-destructive tests carried out in the three directions of the standing tree indicated that the diagonal direction was the best for the emission of stress waves due to the presence of more homogeneous data. In the non-destructive evaluation of the logs, it was found that the wood of the heartwood and sapwood in the logs presented similar MOEd values, contributing to the aggregation of value to the raw material. The MOEd values of the logs were equivalent to the boards. With the stress wave timer it was possible to form groups by variation class (velocity or dynamic modulus of elasticity). The wood presented basic density varying from medium to high. The anisotropy coefficient for all the trees was equal to 1, classifying the wood as stable, corroborating in the classification of wood quality for machining. The tomographic images obtained showed that, there is no difference in the images of the wood between heartwood and sapwood distinct or indistinct. The use of the impulse tomograph together with stress wave timer has confirmed that it is possible to predict the quality of the wood. It was concluded that, among the techniques presented, wave propagation by impulse tomography is the best by the amount of information obtained. In Cluster analysis, group 2 presented satisfactory characteristics from the determined variables, evidencing the species Micrandopsis scleroxylon and Eschweilera odora of great occurrence in the region, besides the species Pouteria guynensis, Inga paraensis, Inga sp., Protium tenuifolium, Manilkara amazonica and Byrsonima crispa. It was observed that the use of alternative technologies in the characterization of the species allowed to register a pattern of variation of the dynamic modulus of elasticity in the wood and to identify the internal quality of the wood. This result confirms that by means of a "quality inventory", there is a possibility of predicting wood quality in situ by wave propagation techniques, to assist in decision making, in the pre-exploratory stage of forest management, directing the Species or individual for the best use.
Buscando avaliar espécies florestais como alternativa ao mercado madeireiro e indicar ferramentas aos planos de manejo florestais sustentáveis para a valoração das árvores in loco, auxiliando na tomada de decisão durante processo pré-exploratório, o presente trabalho objetivou caracterizar madeiras da Amazônia através de técnicas não destrutivas, avaliando sua qualidade interna, propriedades físicas e o módulo de elasticidade dinâmico (MOEd). Os trabalhos de campo foram conduzidos na estação experimental de silvicultura tropical – ZF2 de propriedade do INPA, localizada na BR 174, Manaus/Boa Vista. Foram selecionadas aleatoriamente 19 árvores em 01 (um) hectare, sendo mensurado o diâmetro e coletado material botânico para identificação de todas as árvores. Posteriormente, utilizou-se o aparelho stress wave timer para medição do tempo percorrido pela onda de tensão na árvore, em três sentidos (longitudinal, diagonal e transversal). No mesmo local no DAP, utilizou-se o tomógrafo de impulso para captação de imagens tomográficas do lenho das árvores. As árvores foram derrubadas, sendo retirado um disco de cada árvore para determinação da densidade aparente, básica, retratibilidade e teor de umidade, e desdobradas em toras de 4 m de comprimento e em tábuas. A partir do tempo obtido com stress wave timer foi determinada a velocidade e módulo de elasticidade dinâmico das árvores e subprodutos. Para análise dos dados utilizou-se estatística descritiva, teste de Tukey, análise de Cluster (agrupamento). As avaliações por ensaio não destrutivo realizadas nos três sentidos da árvore em pé indicaram que o sentido diagonal foi o melhor para emissão de ondas de tensão por stress wave timer, por apresentar dados mais homogêneos. Na avaliação não destrutiva das toras e tábuas, revelou que a madeira do cerne e alburno nas toras, apresentaram valores de MOEd semelhantes, contribuindo na agregação de valor à matéria-prima. Os valores de MOEd das toras foram equivalentes ás tábuas. Com o stress wave timer foi possível à formação de grupos por classe de variação (velocidade ou módulo de elasticidade dinâmico). As madeiras apresentaram densidade básica variando de média a alta. O coeficiente de anisotropia para todas as árvores foi igual a 1, classificando as madeiras como estáveis, corroborando na classificação da qualidade das madeiras para usinagem. As imagens tomográficas obtidas revelaram que, não há diferença nas imagens do lenho entre cerne e alburno distinto ou indistinto. A utilização em conjunto do tomógrafo de impulso com o stress wave timer confirmou que é possível predizer a qualidade da madeira. Concluiu-se que, entre as técnicas apresentadas, a propagação de onda por tomografia de impulso é a melhor pela quantidade de informações obtidas. Na análise de Cluster, o grupo 2 apresentou características satisfatórias a partir das variáveis determinadas, evidenciando as espécies Micrandopsis scleroxylon e Eschweilera odora de grande ocorrência na região, além das espécies Pouteria guynensis, Inga paraensis, Inga sp. , Protium tenuifolium, Manilkara amazonica e Byrsonima crispa. Constata-se que, o uso de tecnologias alternativas na caracterização das espécies permitiu registrar um padrão de variação do módulo de elasticidade dinâmico na madeira e identificar a qualidade interna do lenho. Esse resultado confirma que por meio de um “inventário de qualidade”, há possibilidade da predição da qualidade da madeira in situ por técnicas de propagação de onda, para auxiliar na tomada de decisão, na etapa pré-exploratória de um manejo florestal, direcionando a espécie ou indivíduo para o melhor uso.
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Thysell, Hampus. "Two faces of Nynäshamn." Thesis, KTH, Arkitektur, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261371.
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Ett nytt kommunhus för Nynäshamn stad, belägen i Stockholms län sydspets, vilket innehåller aktivitetsbaserade kontor, ett konstgalleri, kafé och en plenisal. Byggnaden ligger mellan två olika men kompletterande stadsrum vilket byggnaden bemöter med två olika "ansikten", allt medan den fortfarande uppfattas som samma byggnad. Denna idé, vilken kan liknas vid idén om Janusansiktet, har varit min huvudsakliga ingång i det här projektet. Utvändigt både återspeglar ansiktena de stadsrum som äger rum framför och är aktiva i formandet av dess karaktärer. Sammanflätningen mellan de båda sidorna sker istället inuti byggnaden där övergången ömsom är flytande och ömsom skarp med visuella snarare än fysiska kopplingar.A new municipal building for the city of Nynäshamn, located in the most southern part of Greater Stockholm, including acitivity based offices, an art gallery, café and council chamber. The building lies inbetween two different but complementary public spaces which it adresses with two different "faces" while still being read as one and the same building. This idea, reminiscent of the image of the roman god Janus, has been my main focus through this project. Outwards, the faces both reflect and take an active roll in forming the character of these public spaces while the interweaving takes places inside the building where they sometimes are visually, although not physically connected, and sometimes closer to fade into one another.
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Paula, Rodrigo Martini [UNESP]. "A reavaliação da Guerra do Vietnã apresentada no romance The short timer (197(), de Gustav Hasford, e em sua adaptação fílmica Fullmetal JAcket (1987), de Stanley Kubrick." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/99156.
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paula_rm_me_sjrp.pdf: 2561833 bytes, checksum: 5e51329f8a6e197890cb17efd957b900 (MD5)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Este projeto examina as maneiras pelas quais a obra The Short-Timers (1979), de Gustav Hasford, e o filme Full Metal Jacket (1987), de Stanley Kubrick, revisitam a Guerra do Vietnã, dessacralizando a História oficial. Em seu romance The Short Timers (1979), o veterano Gustav Hasford narra a trajetória de um soldado e de seus companheiros durante o treinamento militar e o posterior combate no Vietnã. Tomando a perspectiva desse soldado, o narrador focaliza esse episódio da história dos Estados Unidos de forma diversa da tradicional; isto é, denunciando as angústias e dores vividas pelas tropas no treinamento básico e na batalha. Stanley Kubrick dirigiu a adaptação dessa narrativa para o cinema que recebeu o título de Full Metal Jacket (1987). Nela podemos notar como a guerra é revisitada de modo crítico. O cineasta apresenta as narrativas pessoais da personagem principal. Para analisar as obras literária e cinematográfica, serão utilizados textos teóricos acerca da relação entre Literatura e História (Hutcheon, 1989, 1993; White, 1985; Benjamin, 1985) e sobre Pós-Modernismo (Jameson, 1997; Hutcheon, 1989). Com base nestas teorias, propomos verificar como a Literatura e o Cinema representam a Guerra do Vietnã na contemporaneidade, mostrando diferentes pontos de vista sobre o conflito
This project investigates the ways in which Gustav Hasford’s The Short-Timers (1979) and Stanley Kubrick’s Full Metal Jacket (1987) revisit the Vietnam War rethinking official History. In his novel, The Short-Timers, the Vietnam veteran Gustav Hasford narrates the path of a soldier and his mates during military training and later combat in Vietnam. Taking this soldier’s perspective, the narrator focuses on this episode in American history differently than usual; that is, calling attention to the anguish and pains that the troops go through on training and in battle. Stanley Kubrick directed the adaptation of this work into the film Full Metal Jacket, in which can be noticed how war can be critically reevaluated. The filmmaker presents personal accounts by the main character. For the analyses, theories about the relationship between Literature and History (Hutcheon, 1989, 1993; White, 1985; Benjamin, 1985) and Post-Modernism (Jameson, 1997; Hutcheon, 1989) will be used. Based on those theories, we propose to investigate how Literature and Cinema represent the Vietnam War showing other points of view about this conflict
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Paula, Rodrigo Martini. "A reavaliação da Guerra do Vietnã apresentada no romance The short timer (197(), de Gustav Hasford, e em sua adaptação fílmica Fullmetal JAcket (1987), de Stanley Kubrick /." São José do Rio Preto : [s.n.], 2010. http://hdl.handle.net/11449/99156.
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Orientador: Giséle Manganelli FernandesBanca: Manuel Fernando Medina
Banca: Álvaro Luis Hattnher
Resumo: Este projeto examina as maneiras pelas quais a obra The Short-Timers (1979), de Gustav Hasford, e o filme Full Metal Jacket (1987), de Stanley Kubrick, revisitam a Guerra do Vietnã, dessacralizando a História oficial. Em seu romance The Short Timers (1979), o veterano Gustav Hasford narra a trajetória de um soldado e de seus companheiros durante o treinamento militar e o posterior combate no Vietnã. Tomando a perspectiva desse soldado, o narrador focaliza esse episódio da história dos Estados Unidos de forma diversa da tradicional; isto é, denunciando as angústias e dores vividas pelas tropas no treinamento básico e na batalha. Stanley Kubrick dirigiu a adaptação dessa narrativa para o cinema que recebeu o título de Full Metal Jacket (1987). Nela podemos notar como a guerra é revisitada de modo crítico. O cineasta apresenta as narrativas pessoais da personagem principal. Para analisar as obras literária e cinematográfica, serão utilizados textos teóricos acerca da relação entre Literatura e História (Hutcheon, 1989, 1993; White, 1985; Benjamin, 1985) e sobre Pós-Modernismo (Jameson, 1997; Hutcheon, 1989). Com base nestas teorias, propomos verificar como a Literatura e o Cinema representam a Guerra do Vietnã na contemporaneidade, mostrando diferentes pontos de vista sobre o conflito
Abstract: This project investigates the ways in which Gustav Hasford's The Short-Timers (1979) and Stanley Kubrick's Full Metal Jacket (1987) revisit the Vietnam War rethinking official History. In his novel, The Short-Timers, the Vietnam veteran Gustav Hasford narrates the path of a soldier and his mates during military training and later combat in Vietnam. Taking this soldier's perspective, the narrator focuses on this episode in American history differently than usual; that is, calling attention to the anguish and pains that the troops go through on training and in battle. Stanley Kubrick directed the adaptation of this work into the film Full Metal Jacket, in which can be noticed how war can be critically reevaluated. The filmmaker presents personal accounts by the main character. For the analyses, theories about the relationship between Literature and History (Hutcheon, 1989, 1993; White, 1985; Benjamin, 1985) and Post-Modernism (Jameson, 1997; Hutcheon, 1989) will be used. Based on those theories, we propose to investigate how Literature and Cinema represent the Vietnam War showing other points of view about this conflict
Mestre
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Pelka, Tomáš. "Univerzální časomíra pro hasičský sport." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-385904.
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This work deals with the design of universal wireless timer for fire sport disciplines. Fire sport is a group of more than 15 disciplines. There are different ways of time measurement for each discipline. Important part of this work is detailed research of individual disciplines and their requirements at time measurement system and it's accessories. Another part of this work deals with the specification of wireless timekeeping system, which involves suitable partitioning of time measurement system into wirelessly communication modules. The interface for connecting sensors and accessories is also specified. Designed system is suitable for racing and training purposes, it has short installation time. This work also deals with the design of electronics (power and digital circuits) for each module and also with building of prototype, which is tested using prepared scenarios. New findings are evaluated and lead to design of next generation of time measurement system.
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Costa, Lais Gonçalves da. "Seleção de fungos com capacidade de degradação de tocos de Eucalyptus spp. para utilização na destoca biológica." Mestrado em Ciências Florestais, 2016. http://repositorio.ufes.br/handle/10/1963.
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FAPES
O presente trabalho teve por objetivo avaliar, por meio do isolamento e seleção de fungos, o potencial degradador dos mesmos em tocos de Eucalyptus spp., a fim de desenvolver uma alternativa para o processo convencional da retirada de tocos em povoamentos de Eucalyptus spp. Para tanto, foram coletados discos de tocos deteriorados de eucalipto no campo, e a partir destes foram isolados os fungos. A fim de verificar o potencial de degradação de madeira dos fungos isolados, estes foram testados no experimento de pré-seleção. Foi realizada a identificação molecular dos isolados que apresentaram potencial de degradação no experimento de pré-seleção. Os fungos selecionados como potencial degradadores da madeira foram avaliados em ensaio de apodrecimento acelerado para detectar a real capacidade de deterioração. Após este ensaio, foi realizada a análise química da madeira deteriorada para verificar quais constituintes da madeira foram deteriorados pelos fungos. O potencial de degradação em tocos no campo pelos fungos selecionados foi avaliado com o auxilio de um penetrômetro de impacto e por meio da velocidade de propagação das ondas de tensão (Stress wave timer), após quatro meses da inoculação. O isolamento de fungos a partir de tocos no campo permitiu a obtenção de 7 fungos com potencial de degradação de madeira de eucalipto. Os fungos identificados foram Resinicium confertum, Phanerochaete chrysosporium e Trichoderma citrinoviride. A análise química determinou, de maneira geral, a maior preferência pela lignina na posição da madeira mais consumida. Foi observada a presença dos fungos nos tocos inoculados após o término do ensaio de campo, porém a degradação teve pouca variação em relação aos tocos não inoculados.
The present work aimed to evaluate, through the isolating and selection of fungi, the degradation potential thereof in stumps of Eucalyptus spp., in order to develop an alternative to the conventional process of stumps removal in Eucalyptus spp. Therefore, were collected discs in decayed eucalyptus stumps in the field, and from these were isolated fungi. In order to verify the potential degradation of wood fungi isolated, these were tested in the pre-selection experiment. Was performed molecular identification of isolates exhibiting degradation potential in the preselection experiment. Fungi selected as degrading potential of wood were evaluated in accelerated decay test to detect the actual capacity of deterioration. After this test, was performed a chemical analysis of the decayed wood to verify which wood constituents were damaged by the fungi. The stumps degradation potential in the field by the selected fungi was evaluated with the aid of a penetrometer of impact and through the speed of propagation of stress waves, after four months of inoculation. Isolation of fungi from the field stumps afforded 7 fungi with degradation potential of eucalyptus wood. The identified fungi were Resinicium confertum, Phanerochaete chrysosporium and Trichoderma citrinoviride. Chemical analysis of the wood determined, in generally, most preferably of lignin in the most consumed position of the wood. It was observed the presence of fungi in the inoculated stumps after the field test, but the degradation had little variation in relation to non-inoculated stumps.
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Каракуль, В. В. "Двопозиційний регулятор температури з таймером." Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25016.
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Каракуль, В. В. Двопозиційний регулятор температури з таймером : випускна кваліфікаційна робота : 171 "Електроніка" / В. В. Каракуль ; керівник роботи В. В. Гордієнко ; НУ "Чернігівська політехніка", кафедра електроніки, автоматики, робототехніки та мехатроніки. – Чернігів, 2021. – 55 с.На сучасних виробництвах все більше і більше використовують різноманітні електронні пристрої автоматизації процесу. Пристрої автоматизації технологічного процесу присутні як на повністю автоматизованих виробництвах так і на менш автоматизованих. Метою випускної кваліфікаційної робити є розробка електронного пристрою для вимірювання та регулювання температури згідно часових режимів роботи, як відомі аналоги. Розроблений мною електронний пристрій має алгоритм роботи, який задовольняє більшість технологічних процесів для менш автоматизованих виробництв та технологічних процесів; живиться від змінної напруги 220 В, джерело якого знайдеться на будь-якому підприємстві. Ще однією перевагою є ціна.
Various electronic process automation devices are increasingly used in modern industries. Technological process automation devices are present in both fully automated and less automated productions. The purpose of the final qualification is to develop an electronic device for measuring and regulating temperature according to time modes of operation, as known analogues. The electronic device developed by me has an algorithm that satisfies most technological processes for less automated production and technological processes; powered by 220 V AC, the source of which can be found at any company. Another advantage is the price.
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Jóhannsdóttir, Lára Elise. "De stille barna og skolens krav om muntlig aktivitet : En kvalitativ intervjustudie om hvordan lærere kan legge til rette for elever med innagerende atferd i timer med forventninger om muntlig aktivitet." Thesis, Norges teknisk-naturvitenskapelige universitet, Pedagogisk institutt, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26005.
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Denne oppgaven tar for seg innagerende atferd i skolen. I dagens skole stilles det krav om muntlig aktivitet. Elever med innagerende atferd kan ha vanskelig for å være muntlig aktiv, og kan derfor oppleve skolens krav som vanskelig å oppfylle. Dette viser at den innagerende atferdsproblematikken er en utfordring i dagens skole, selv om det er den utagerende atferdsproblematikken som har fått mest fokus ved tidligere forskning. Av den grunn blir dette et viktig tema å belyse i spesialpedagogisk sammenheng. Mitt ønske med denne oppgaven er å se på hvordan det kan tilrettelegges for elever med innagerende atferd i klasserommet, siden skoledagen krever mye muntlig aktivitet. Jeg kom derfor frem til følgende problemstilling: På hvilken måte kan lærere faglig legge til rette for elever som viser innagerende atferd i timer med forventninger om muntlig aktivitet? Denne problemstillingen er nært forbundet med spørsmålet: Hva opplever lærere som viktig når de skal tilrettelegge for elever med innagerende atferd i timer med forventninger om muntlig aktivitet? For å besvare denne problemstillingen har jeg benyttet kvalitativ metode og intervju som datainnsamlingsmetode, på grunn av at jeg ønsket å komme i dybden på lærernes tanker, meninger og refleksjoner rundt temaet. Jeg valgte å intervjue lærere innenfor 5-7. trinn, siden det kan tenkes at kravene i skolen øker ved 5. trinn og at det derfor er her lærere kan begynne å oppleve utfordringer med elever som er veldig stille. Mitt teoretiske utgangspunkt var preget av Ingrid Lund og Kirsten Flaten sine bøker og artikler, samt teori om atferdsproblemer generelt. Videre har jeg presentert teori som tar utgangspunkt i mine funn. I mine funn kom det frem at lærerne ser elevene som viser innagerende atferd i klasserommet, og at de vet hvem disse elevene er. Ellers var det delte meninger om hvor utfordrende de syntes denne elevgruppen er. Det kom frem at elevene med innagerende atferd kan være en vanskelig utfordring i skolen, ved at de lett kan bli usynlige og at læreren kan ha dårlig samvittighet ovenfor dem. Det er videre vanskelig å komme i dialog med eleven, noe som gjør det utfordrende å tilrettelegge for læring og utvikling. Likevel kom det frem at denne elevgruppen også blir tatt godt vare på. Lærerne ønsker ikke å la disse elevene bli usynlige ved at de stiller krav til dem slik at de kan oppleve læring og utvikling. For å kunne utfordre og stille krav til elevene er det viktig at flere forhold ligger til grunn slik at situasjonen ikke oppleves som angstfull. Å skape et godt og trygt klassemiljø, være i dialog med enkelteleven og skape en god relasjon kom derfor frem i mine funn som nødvendig tilrettelegging for elever med innagerende atferd. Ved å tilrettelegge på denne måten kan læreren stille krav til elevene som fører til læring og utvikling. I tillegg nevnte mine deltakere ulike spesifikke tiltak de mente fungerte bra for denne elevgruppen, og som kan gjennomføres i skolehverdagen. I denne oppgaven blir altså utfordringer med elever som viser en innagerende atferd i skolen belyst, samt ulike måter læreren kan tilrettelegge for disse elevene på gjennom ulike spesifikke tiltak. Disse tiltakene vil bli drøftet opp mot ulike teorier og tidligere forskning, i tillegg til at det kan stilles spørsmålstegn ved hvor enkelt det er å gjennomføre de ulike tiltakene i en travel skolehverdag. At elevene må bli fortrolig med å høre sin egen stemme dukker også opp som sentralt i oppgaven, med tanke på at vi lever i et samfunn hvor krav om kommunikasjon forekommer. Selv om den innagerende atferden kan oppleves som et problem for enkelteleven, kommer det også frem i oppgaven at dette ikke nødvendigvis trenger å være et problem. Likevel er det viktig for de elevene som føler usikkerhet og opplever dette problematisk, at de får mulighet til å utvikle trygghet ved seg selv og situasjoner de befinner seg i.
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Савич, Андрій Богданович, and Andriy Savych. "Цифровий таймеру часу." Bachelor's thesis, Тернопільський національний технічний університет ім..Івана Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35597.
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Темою кваліфікаційної роботи бакалавра є розробка конcтрукції цифрового таймеру часу на основі мікроконтролера АТ90S2313, розраховано його основні технічні параметри, проведено якісну та кількісну оцінку технологічності, визначено умови експлуатації та показники собівартості.
У частині проекту розкрито призначення, область застосування та технічні вимоги до проектованого радіопристрою, здійснено вибір елементної бази, описано принцип роботи по електричній принциповій схемі, та виконано її аналіз, виконано розрахунок електричних параметрів окремих каскадів та обґрунтування виробу і опис конструкції, розраховано надійність пристрою, здійснено аналіз технологічності конструкції виробу і розроблено маршрутно-операційної технології складання і монтажу друкованого вузла.The topic of the bachelor's qualification work is the development of the digital time timer design based on the AT90S2313 microcontroller, its main technical parameters are calculated, qualitative and quantitative assessment of manufacturability is carried out, operating conditions and cost indicators are determined. In the part of the project the purpose, scope and technical requirements to the designed radio device are revealed, the element base is selected, the principle of work according to the electric schematic scheme is described, and its analysis is performed, calculation of electric parameters of separate stages and product substantiation is performed. the analysis of manufacturability of a design of a product is carried out and the route-operational technology of assembly and installation of the printed assembly is developed.
ВСТУП 6 РОЗДІЛ 1 ОСНОВНА ЧАСТИНА 8 1.1 Аналіз технічного завдання 8 1.2 Аналіз структурної схеми виробу 8 1.3 Опис принципу роботи схеми електричної принципової та її аналіз 9 1.4 Проектування і розрахунок вузлів електричної принципової схеми пристрою 11 1.4.1 Розрахунок електричних параметрів окремих каскадів 11 1.4.2 Розрахунок параметрів друкованого монтажу 14 1.5 Вибір і обґрунтування компонентної бази 19 1.6 Компоновка друкованого вузла пристрою 32 1.7 Собівартість розробленого пристрою35 РОЗДІЛ 2 СПЕЦІАЛЬНА ЧАСТИНА 43 2.1 Обгрунтування використання та вибору САПР для проектування 43 2.2 Опис створення конструктивну друкованої плати в САПР автоматизованого проектування 44 РОЗДІЛ 3 ОХОРОНА ПРАЦІ ТА БЕЗПЕКА ЖИТТЄДІЯЛЬНОСТІ 56 3.1 Природне середовище і його забруднення 56 3.2 Заходи щодо забезпеченню безпечної роботи при ремонті технологічного обладнання 7 3.3 Захист людини від впливу іонізуючих випромінювань 60 ВИСНОВКИ 64 СПИСОК ВИКОРИСТАНИХ ДЖЕРЕЛ 65 ДОДАТКИ 66
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Nguyen, Thuc Tuyen. "Robot pro stolní tenis." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-231006.
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This diploma thesis deals with designing and manipulating a robot for training table tennis. Robot's mechanical construction is based on aluminium profiles supported by various standardized assembly units, such as rotating bearings, plain bearings, threaded rods... The front-end part of the robot, which requires better deformation property and lighter weight, was made from ABS material using 3D rapid prototyping technology. The design of the robot allows its body to rotate around three axises. Thanks to the high dynamical ability, robot can be set to throw balls to various places on the playing table, with different types of ball spin. Balls will be shot out by two rubber wheels, which are attached to two electrical DC motors. By driving the speed of the two motors, we can control the speed of the ball, as well as speed of its spin. All robot's activities are driven by an embedded system designed using microcontroller ATMega128. A firmware for controlling robot's function was writen and flashed into the microcontroller. End-users might communicate with the robot via a system of buttons and a text LCD display. The built robot was tested and it has shown its ability to throw balls to 6 different places of the playing table, at different speeds, with different types of ball spin, and different spin speed, according to the parameters set by user.
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Rajendran, Rajapandiyan. "The Evaluation of GeoNetworking Forwarding in Vehicular Ad-Hoc Networks." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-23982.
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In Intelligent Transportation Systems (ITS), disseminating warning messages in a timely and efficient way through wireless short-range communications can save many lives and reduce traffic congestion. A geographical broadcast protocol provides data delivery to specified geographical areas, using multi-hop communications if needed. Among the main challenges for such protocols are forwarder selection and the reduction of the number of hops required to reach and cover the destination area. In this thesis we propose an efficient geographical broadcast protocol called Preferred and Contention Based Forwarding (PCBF) and evaluate it through simulations. PCBF uses a combination of contention-based forwarding and selecting preferred forwarders also found in other protocols like Emergency Message Dissemination for Vehicular Environments (EMDV). Since the preferred forwarder is allowed to immediately forward the packet (evading contention among other potential forwarders), this approach reduces end-to-end delays. Notable extensions of PCBF compared to EMDV are the use of direct negative acknowledgements in case of unnecessary rebroadcasts and the use of forwarders outside the target region. Our simulation results show that the PCBF protocol outperforms selected other protocols in terms of end-to-end delay, re-broadcast overhead and reliability in both sparse and dense networks.
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Langkau, Katharina. "Flows over time with flow dependent transit times." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968912656.
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Park, Chang Yun. "Predicting deterministic execution times of real-time programs /." Thesis, Connect to this title online; UW restricted, 1992. http://hdl.handle.net/1773/6978.
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Lundkvist, Henrik. "Robust Vehicle Routing in an Urban Setting." Thesis, KTH, Optimeringslära och systemteori, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186248.
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In this thesis, the vehicle routing problem with stochastic, and time dependent, travel times is studied. The stochastic travel times are estimated from historical drive data. The variation of the drive times, as well as that of the variance, during the day was modeled. The purpose of the thesis was to propose a method of handling the congestion related traffic impediments in an urban setting. Since the majority of times of delivery in the empirical test cases studied correlate with the time period of high traffic load, an efficient and robust handling of such traffic scenarios is of high importance. It is shown that the stochastic models will shift the estimated arrivals to customers from the more volatile early and late extremes to more central regions of the time window. Previously delivered routes were evaluated both with the standard algorithm and the proposed stochastic algorithm. The difference between the actual drive times and the calculated drive times were analyzed by studying the correlation of the drive times between each customer in the route. It was shown that the routes of the proposed stochastic method increased this correlation. The drive times between nodes where also perturbed with a Gamma distributed noise. The results from the stochastic algorithm showed higher resilience to this disturbance than did the deterministic models.I detta examensarbete har fordonsruttningsproblemet, VRP, med stokastiska och tidsberonds körtider behandlöats. De stokastiska körtiderna har estimerats från tidigare insamlad hasighetsdata. Modeller för körtidernas och variansernas förändring under dagen har tagits fram. Syftet med examensarbetet var att föreslå en metod för hur påverkan på körtider av förutsägbar trafikträngsel i en urban trafikmiljö kan hanteras. Eftersom huvuddelen av alla leveranser sammanfaller med de tider på dygnet då trafikbelastning är som högst, ar är en effektiv och robust metod för att hantera sådana störningar av stor vikt. Det visas att den stokastiska modellen kommer att förflyttar ankomster från början och slutet av tidsfönstret till den mer okänsliga mittregionen. Tidigare, utförda leveranser studerades både med den ursprungliga deterministiska modellen och här framtagna stokastiska modellen. Skillnaden mellan de två analyserades genom att studera korrelationen mellan körtiderna som de beräknats av de två modellerna och de upmätta tiderna som de loggats av leveransfordonen. Det visas att korrelationen mellan körtiderna mellan de stokastiska körtiderna och de verkliga körtiderna är högre än korrelationen mellan de deterministiska körtiderna och de verkliga. Rutterna som föreslagits av den stokastiska modellen var också mer tlig mot störningar.
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Saldanha, Joao Mariano de Sousa. "On the size of nations and economic growth : theory, evidence, and lessons for East Timor /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3026387.
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Jönsson, Andreas. "The Importance of Time in Charles Dickens' Hard Times." Thesis, Högskolan i Gävle, Institutionen för humaniora och samhällsvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-4017.
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The purpose of the essay is to illustrate the differences in understanding and comprehension of time among the characters in the novel Hard Times. These contrasting differences are then argued to compose a crtisism of the industrial society.
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Martinoty, Laurine. "Intrahousehold Allocation of Time and Consumption during Hard Times." Thesis, Lyon, École normale supérieure, 2015. http://www.theses.fr/2015ENSL1021/document.
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Les conséquences des chocs économiques négatifs sur les ménages ont été documentés extensivement, mais on en sait beaucoup moins sur la manière dont ces chocs sont transmis aux individus à travers la médiation du ménage. Le ménage contribue-il à modérer l'effet des chocs négatifs ? Dans quelle mesure le choc économique pèse-t-il dans la négociation familiale ? À partir de données sur la crise économique argentine de 2001, je montre d'abord que les femmes en couple ont une plus grande probabilité de devenir actives si leur mari a fait l'expérience d'un choc de revenu. Ensuite, je montre que le cycle économique importe dans les décisions d'investissement en capital humain. Sur le long terme, les profils de salaire et d'employabilité des hommes argentins sont affectés de manière persistante par les conditions économiques initiales au moment de l'obtention du diplôme. Enfin, je considère la dimension “man-cession” de la crise économique de 2009 en Espagne et montre que la part des ressources du ménage reçues par les femmes pour leur consommation privée augmente avec la diminution de l'écart des taux de chômage hommes-femmes, confortant l'hypothèse que les chocs négatifs modifient le pouvoir de négociation des individus au sein du ménageThe consequences of adverse aggregate shocks on households have been repeatedly documented, but far less has been said on the way they are passed over to individuals through the mediation of the household. Does the household contribute in mitigating the effects? Or does the economic shock rather invite itself at the family negociating table? Using the Argentine 2001 economic crisis as a natural experiment, I first show that married women are more likely to enter the labor market if their husband experienced a loss in income, giving credit to the insurance mechanism. Then, I show that the business cycle matters for investments in education, and that long run labor outcomes of Argentine men are persistently affected by the initial conditions upon graduation. Finally, I consider the “Mancession” dimension of the Great Recession in Spain and demonstrate that the resource share accruing to wives for own consumption increases together with the decreasing unemployment gap, which comes in support to the bargaining hypothesis
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Копитчак, Андрій Ігоравич, and Andriy Kopytchak. "Лічильник відеоімпульсів на програмованій логічні матриці." Bachelor's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35596.
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Проведено аналіз лічильників відеоімпульсів. Обґрунтовано вибір засобів та методів вимірювання кількості відеоімпульсів за одиницю часу. На базі проведеного аналізу розроблено схеми електричні структурна та принципова. Проведено розрахунок компаратора та стабілізатора напруги. Розроблено алгоритм роботи лічильник на програмованій логічній матриці.
Діапазон вимірювання амплітуди вхідного сигналу 5 …20 В, довжина імпульсу не менше 8 нс, мінімальний інтервал між імпульсами 10 мкс, похибка вимірювання 0,01 %, напруга живлення +12 В. Пристрій управляється двома кнопками “Старт/Стоп” та “Скид”.The analysis of video pulse counters is carried out. The choice of means and methods of measuring the number of video pulses per unit time is substantiated. On the basis of the conducted analysis are developed electric schemes of structural and principle. The calculation of the comparator and voltage stabilizer is performed. An algorithm for running a meter on a programmable logic matrix has been developed. The range of measurement of the amplitude of the input signal 5 …20 V, pulse length not less than 8 ns, measurement error of 0.01%, supply voltage +12 V. The device is controlled by two buttons "Start / Stop" and "Reset".
Вступ 8 1 Основна частина 10 1.1 Аналіз технічного завдання 10 1.2 Проектування схеми електричної структурної 11 1.3 Обґрунтування вибору типу та структури ПЛМ 12 1.3.1 Компаратор 18 1.3.3 Індикатор 27 1.3.3.1 Контролер HD45780 27 1.3.4 Пристрій для формування затриманих коротких імпульсів 33 1.3.5 Блок підрахунку імпульсів частотою 1 МГц 35 1.3.6 Блок аналізу коду на перевищення роздільної здатності вимірювача періоду 36 1.3.7 Стабілізатори 39 1.4 Проектування друкованого вузла 40 2 Початок роботи з Mathcad 43 3 Безпека життєдіяльності, основи охорони праці 47 3.1 Розрахунок коефіцієнту природнього освітлення 47 3.2 Види іонізуючого випромінювання та їх властивості 50 3.3 Висновки 54 Перелік посилань 55 Додатки 57
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Dooply, Ayoob Eusoof. "Performance optimization of mixed time systems using self-timed logic /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3022181.
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Stupak, Noah. "Time-delays and system response times in human-computer interaction /." Online version of thesis, 2009. http://hdl.handle.net/1850/10867.
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Dubasi, Mohana Asha Latha. "Timed Refinement for Verification of Real-Time Object Code Programs." Diss., North Dakota State University, 2018. https://hdl.handle.net/10365/31372.
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Real-time systems such as medical devices, surgical robots, and microprocessors are safety-critical
applications that have hard timing constraint. The correctness of real-time systems is
important as the failure may result in severe consequences such as loss of money, time and human
life. These real-time systems have software to control their behavior. Typically, this software
has source code which is converted to object code and then executed in safety-critical embedded
devices. Therefore, it is important to ensure that both source code and object code are error-free.
When dealing with safety-critical systems, formal verification techniques have laid the foundation
for ensuring software correctness.
Refinement based technique in formal verification can be used for the verification of real-time
interrupt-driven object code. This dissertation presents an automated tool that verifies the
functional and timing correctness of real-time interrupt-driven object code programs. The tool has
been developed in three stages. In the first stage, a novel timed refinement procedure that checks
for timing properties has been developed and applied on six case studies. The required model
and an abstraction technique were generated manually. The results indicate that the proposed
abstraction technique reduces the size of the implementation model by at least four orders of
magnitude. In the second stage, the proposed abstraction technique has been automated. This
technique has been applied to thirty different case studies. The results indicate that the automated
abstraction technique can easily reduce the model size, which would in turn significantly reduce
the verification time. In the final stage, two new automated algorithms are proposed which would
check the functional properties through safety and liveness. These algorithms were applied to the
same thirty case studies. The results indicate that the functional verification can be performed in
less than a second for the reduced model.
The benefits of automating the verification process for real-time interrupt-driven object code
include: 1) the overall size of the implementation model has reduced significantly; 2) the verification
is within a reasonable time; 3) can be applied multiple times in the system development process.Several parts of this dissertation were funded by a grant from the United States Government and the generous support of the American people through the United States Department of State and the United States Agency for International Development (USAID) under the Pakistan – U.S. Science & Technology Cooperation Program. The contents do not necessarily reflect the views of the United States Government.
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Fazi, Davide. "Progetto di un nodo sensore a nanocorrenti basato su microcontrollore." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13141/.
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Le prestazioni e la densità di integrazione dei circuiti integrati hanno avuto una incredibile crescita negli ultimi decenni.
Questo incredibile sviluppo ha portato ad una enorme crescita delle applicazioni dei circuiti elettronici, fino ad arrivare a pensare di poter rendere “smart” e connesso ad Internet ogni oggetto di uso comune, grazie alla cosiddetta “Internet of Things”.
In questo panorama trovano dunque sempre maggior spazio i sensori, indispensabili al fine di monitorare i parametri d’interesse negli oggetti da controllare.
Un altro aspetto molto importante è quello di ridurre il consumo dei dispositivi. Gli oggetti da connettere ad internet nella maggior parte dei casi saranno infatti da alimentare a batteria.
Lo scopo di questo elaborato è quello di sviluppare un nodo sensore con annesso un datalogger mediante l’utilizzo di un microcontrollore. L’obiettivo principale è di ridurne il consumo al minimo, con correnti di standby dell’ordine delle decine di nA, così da poter alimentare tale circuito per un periodo di diversi anni con la batteria più piccola possibile.
Il circuito sarà non solo progettato ma anche realizzato su PCB, al fine di poterne collaudare il funzionamento reale e di poterlo confrontare con quello previsto.
Un dispositivo di questo tipo, oltre ad essere un utile caso di studio per mostrare i valori minimi di consumo verso i quali sia possibile spingersi, potrebbe trovare applicazione in situazioni in cui si renda necessario monitorare determinati parametri in condizioni tali da rendere difficoltosa la sostituzione della batteria e quindi anche il monitoraggio real-time che richiederebbe necessariamente un maggior consumo.
Il progetto si compone di un microcontrollore che, oltre a gestire la lettura di un sensore, si occupa di implementare la funzione di datalogger. Un altro componente fondamentale è un timer, avente lo scopo di gestire il periodo di attività del µC.
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Manolache, Sorin. "Schedulability analysis of real-time systems with stochastic task execution times." Licentiate thesis, Linköping University, Linköping University, ESLAB - Embedded Systems Laboratory, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5730.
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Systems controlled by embedded computers become indispensable in our lives and can be found in avionics, automotive industry, home appliances, medicine, telecommunication industry, mecatronics, space industry, etc. Fast, accurate and flexible performance estimation tools giving feedback to the designer in every design phase are a vital part of a design process capable to produce high quality designs of such embedded systems.
In the past decade, the limitations of models considering fixed task execution times have been acknowledged for large application classes within soft real-time systems. A more realistic model considers the tasks having varying execution times with given probability distributions. No restriction has been imposed in this thesis on the particular type of these functions. Considering such a model, with specified task execution time probability distribution functions, an important performance indicator of the system is the expected deadline miss ratio of tasks or task graphs.
This thesis proposes two approaches for obtaining this indicator in an analytic way. The first is an exact one while the second approach provides an approximate solution trading accuracy for analysis speed. While the first approach can efficiently be applied to monoprocessor systems, it can handle only very small multi-processor applications because of complexity reasons. The second approach, however, can successfully handle realistic multiprocessor applications. Experiments show the efficiency of the proposed techniques.
Report code: LiU-Tek-Lic-2002:58.
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Park, Young-Saeng. "Automatic schedule computation for distributed real-time systems using timed automata." Thesis, Northumbria University, 2008. http://nrl.northumbria.ac.uk/745/.
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The time-triggered architecture is becoming accepted as a means of implementing scalable, safer and more reliable solutions for distributed real-time systems. In such systems, the execution of distributed software components and the communication of messages between them take place in a fixed pattern and are scheduled in advance within a given scheduling round by a global scheduling policy. The principal obstacle in the design of time-triggered systems is the difficulty of finding the static schedule for all resources which satisfies constraints on the activities within the scheduling round, such as the meeting of deadlines. The scheduler has to consider not only the requirements on each processor but also the global requirements of system-wide behaviour including messages transmitted on networks. Finding an efficient way of building an appropriate global schedule for a given system is a major research challenge. This thesis proposes a novel approach to designing time-triggered schedules which is radically different from existing mathematical methods or algorithms for schedule generation. It entails the construction of timed automata to model the arrival and execution of software tasks and inter-task message communication for a system; the behaviour of an entire distributed system is thus a parallel composition of these timed automata models. A job comprises a sequence of tasks and messages; this expresses a system-wide transaction which may be distributed over a system of processors and networks. The job is formalized by a timed automata based on the principle that a task or message can be modelled by finite states and a clock variable. Temporal logic properties are formed to express constraints on the behaviour of the system components such as precedence relationships between tasks and messages and adherence to deadlines. Schedules are computed by formally verifying that these properties hold for an evolution of the system; a successful schedule is simply a trace generated by the verifier, in this case the UPPAAL model-checking tool has been employed to perform the behaviour verification. This approach guarantees to generate a practical schedule if one exists and will fail to construct any schedule if none exists. A prototype toolset has been developed to automate the proposed approach to create of timed automata models, undertake the analysis, extract schedules from traces and visualize the generated schedules. Two case studies, one of a cruise control system, the other a manufacturing cell system, are presented to demonstrate the applicability and usability of the approach and the application of the toolset. Finally, further constraints are considered in order to yield schedules with limited jitter, increased efficiency and system-wide properties.
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Wong, Ricky Chin Wey. "Construction time and cost of multi-storey post-tensioned timber structures." Thesis, University of Canterbury. Department of Civil and Natural Resources Engineering, 2010. http://hdl.handle.net/10092/5256.
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The environmentally friendly and high performance multi-storey LVL timber system developed at the University of Canterbury (UC) consisting of post-tensioned frames and shear walls is referred to as the Pres-Lam system. It is possible that this structural system has the ability to increase productivity and reduce construction costs when compared with concrete and steel construction materials. As the Pres-Lam system is a new technology, the actual construction time and cost are still unknown. The outcome of this research will add value to the construction industry and encourage the industry to consider the Pres-Lam system for future projects. Previous research has shown that construction using this type of structural system is feasible for multi-storey buildings. In case study (1), this research revisited the research done for the actual Biological Sciences building under construction at the University of Canterbury based on the latest information available from the UC timber research team. This research compared the construction time and cost of three virtual buildings (Pres-Lam, Concrete and Steel) for Case Study (1).
The research has been able to optimise the performance of the Pres-Lam system having increased open spaces with large column spacing. The proposed fully prefabricated double “T” timber concrete composite (TCC) floor system was used and found to reduce construction time. This has also shown that the LVL components in the Pres-lam system can be fully prefabricated at a factory.
In case study (1), the predicted estimated construction time for the structural system was 60 working days (12 weeks) as compared to the concrete structure which required 83 working days. In the construction time analysis only the construction time of the structural building portion was compared instead of the overall construction time of the building project. The construction cost estimation for the concrete, steel and optimised Pres-Lam overall buildings including claddings and architectural fittings were produced and compared. The construction cost analysis concluded that the construction cost of the Pres-Lam building has been estimated to be only 3.3% more than the steel building and 4.6 % more than the concrete building.
In case study (2), this research evaluated the deconstructability of the Pres-Lam system and found that the Pres-Lam system was potentially a very sustainable building material where 90% of the deconstructed materials can be recycled and reused to construct a new office building at the University of Canterbury. The reconstruction time of the STIC office building has been predicted to be 15 weeks and the estimated cost for the reconstruction to be $260,118. This will be used for future construction planning, monitoring and control.
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Crystal, Lisa. "Quantum Times: Physics, Philosophy, and Time in the Postwar United States." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:10973.
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The concept of time in physics underwent significant changes in the decades following World War II. This dissertation considers several ways in which American physicists grappled with these changes, analyzing the extent to which philosophical methods and questions played a role in physicists' engagement with time. Two lines of questioning run through the dissertation. The first asks about the professional identities of postwar American physicists in relation to philosophy, as exemplified by their engagement with the concept of time. The second analyzes the heterogeneous nature of time in physics, and the range of presuppositions and assumptions that have constituted this "fundamental" physical concept. The first chapter looks to the development of atomic clocks and atomic time standards from 1948-1958, and the ways in which new timekeeping technologies placed concepts such as “clock”, “second,” and “measure of time” in a state of flux. The second chapter looks to the experimental discovery of CP violation by particle physicists in the early 1960s, raising questions about nature of time understood as the variable “t” in the equations of quantum mechanics. The third chapter considers attempts to unify quantum mechanics and general relativity in the late 1960s, which prompted physicists to question the “existence” of time in relation to the universe as a whole. In each episode considered, physicists engaged with the concept of time in a variety of ways, revealing a multiplicity of relationships between physics, philosophy, and time. Further, in each case physicists brought a unique set of assumptions to their concepts of time, revealing the variety ways in which fundamental conceptsfunctioned and changed in late twentieth century physics. The result is a heterogeneous picture of the practice of physics, as well as one of physics’ most basic concepts.History of Science