Academic literature on the topic 'Technika DGT'
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Journal articles on the topic "Technika DGT"
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Brännkärr, Pia. "Utbytesstuderandes erfarenheter av slöjd på universitetsnivå." Techne serien - Forskning i slöjdpedagogik och slöjdvetenskap 21, no. 3 (June 22, 2021): 78–93. http://dx.doi.org/10.7577/technea.4461.
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Internationalisering är en viktig del av universitetens verksamhet. Inom slöjdvetenskap vid Åbo Akademi i Vasa har det iakttagits en ökning när det gäller antalet utbytesstuderande med intresse att avlägga en eller flera slöjdkurser under deras utbytesperiod. För en del utbytesstuderande har slöjd varit någonting helt nytt och obekant medan andra har haft ett liknande ämne i sitt hemland. Det här har väckt intresset och frågan om vad som gör lärandet och verksamheten i slöjd intressant för utbytesstuderande. Den här studiens syfte är att undersöka hurdana erfarenheter utbytesstuderande får under en slöjdkurs på universitetsnivå. Forskningsfrågan är: Vilka erfarenheter synliggör utbytesstuderande från slöjdkursen de deltagit i? Genom studien fås ett internationellt perspektiv på slöjdupplevelser, samt kunskap som hjälper mottagande universitet och lärare att i framtiden anpassa verksamheten så att studerande får bästa möjliga utbyte och erfarenhet. Det empiriska materialet består av 13 utbytesstuderandes skriftliga kursuppgifter från en slöjdkurs hösten 2018. Genom tematisk analys och med hjälp av programmet Nvivo har studerandes texter analyserats och fem teman har skapats. Det som framkommer i resultatet är att utbytesstuderandes erfarenheter berör: det personliga såsom känslor och personlig utveckling, det ämnesteknologiska såsom olika tekniker och material, den kommande lärarprofessionen, kontakten till och interaktionen med medstuderande och lärare, samt kopplingar och reflektioner till det omgivande samhället och hemlandet. Många av erfarenheterna fokuserar på det personliga och på interaktionen och kontakten med medstuderanden. Erfarenheterna berör till stor del liknande områden som framkommer i tidigare forskning. Keywords: utbytesstuderande, erfarenhet, slöjd, universitet, slöjdutbildning
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Johansson, Marléne. "Laddad slöjd." Techne serien - Forskning i slöjdpedagogik och slöjdvetenskap 21, no. 3 (June 22, 2021): 15–31. http://dx.doi.org/10.7577/technea.4061.
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Artikelns syfte är att utifrån slöjdforskning och historiska, sociala och kulturella grunder ge en översiktlig bild och lyfta fram hur slöjd, slöjdkunnande och slöjdföremål kan uppfattas ’laddade’ på olika vis. Översikten är dels menad att väcka tankar och reflektion om det som kan uppfattas självklart eller mindre uppmärksammat om slöjdkunnande och slöjdföremål, dels tänkt att kunna användas som underlag inför fortsatta diskussioner och argumentationer i relation till elevers möjligheter att lära och utvecklas i slöjdens kunskapsform. Flera frågor kan ställas om det som kan rymmas i slöjdens kunskapsform, men vad slöjdens kunskapskvalitéer kan innefatta är inte alltid tillräckligt uppmärksammat vilket problematiseras i denna artikel utifrån slöjdkunnande och slöjdföremåls laddningar. Sociokulturella utgångspunkter används som ramverk för att beskriva och diskutera meningsskapande i relation till slöjd. Inledningsvis görs en kortare beskrivning om redskaps, föremåls och handlingsburna laddningar. Därefter belyses hur skolslöjd och slöjdkunnande ger och ges laddningar. Vidare förs resonemang om slöjdkunnande och slöjdföremåls meningsskapande i och utanför skolan. I artikeln lyfts behovet av en breddad syn på slöjdens kunskapsform, och vad det kan innefatta att arbeta i hela processer utifrån idéer, olika material och redskap till ett fysiskt föremål. Avslutningsvis sammanfattas och diskuteras skolslöjdens möjligheter och utmaningar i relation till att utvecklas och lära i kunskapsformen. Sökord: slöjd, kunnande, föremål, meningsskapande, laddning
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Porko-Hudd, Mia. "Förord." Techne serien - Forskning i slöjdpedagogik och slöjdvetenskap 21, no. 3 (June 22, 2021): i—ii. http://dx.doi.org/10.7577/technea.4488.
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Bästa läsare! Välkommen att läsa artiklar i detta nya nummer av Techne Serien, det tredje numret under år 2021. I numret finns sex artiklar vars gemensamma nämnare kan reduceras till ordkonstruktionerna samskapande, meningsskapande och tvärvetenskapande. Den första artikeln Video Data Analysis for Tracing Emotional Aspects of Collaborative Design and Making Processes av Tiina Paavola, Kaiju Kangas, Sirpa Kokko, Sini Riikonen, Varpu Mehto, Kai Hakkarainen och Pirita Seitamaa-Hakkarainen, beskriver införandet av en systematisk analys på tre nivåer för videoanalys, för att spåra emotionella aspekter av en Makercentrerad samarbetsdesign och tillverkningsprocess. För analys av longitudinella samarbetsprocesser utvecklades den visuella analysmetoden Making-Process-Rug, som möjliggör spårning av materialmedierade verbala och förkroppsligade tillverkningsprocesser. Metoden exemplifieras genom en fallstudie där en grupp elever i årskurs 7 använde traditionella och digitala tillverkningstekniker för att uppfinna, designa och tillverka artefakter. Datamaterialet utgörs av 11 timmar videofilm som analyseras på tre nivåer bestående av makro, mellanliggande och mikro nivå. Resultaten visar att metoden för att identifiera känslor från videodata har potential för pedagogisk forskning inom olika områden, men att kulturspecifika uttryck och tolkningar av känslor kräver särskild uppmärksamhet i fortsatt metodutveckling. I den andra artikeln Laddad slöjd – slöjdkunnande och slöjdföremåls meningsskapande, strävar Marléne Johansson att utifrån slöjdforskning och historiska, sociala och kulturella grunder ge en översiktlig bild och lyfta fram hur slöjd, slöjdkunnande och slöjdföremål kan uppfattas ’laddade’ på olika vis. Artikeln inleds med beskrivningar om olika redskaps och föremåls laddningar. Med hjälp av en sax, en nål och en jeansväska illustreras hur olika varianter av respektive redskap har olika laddningar. En sax är inte bara en sax, den kan t ex vara en fårklippningssax, leksakssax i plast, tillklippningssax, plåtsax, kirurgsax, taggsax, broderisax, knapphålssax eller frisörsax, var och en med sin egen form, sitt eget specifika användningsändamål och laddning. Johansson belyser vidare hur skolslöjd och slöjdkunnande ger och ges laddningar samt för resonemang om slöjdkunnande och slöjdföremåls meningsskapande i och utanför skolan. Artikeln avslutas med att lyfta fram behovet av en breddad syn på slöjdens kunskapsform, och vad det kan innefatta att arbeta i hela processer utifrån idéer, olika material och redskap till ett fysiskt föremål. Artikeln ”Det blir ofte vanskelig å få til de tverrfaglige greiene” Et lærerperspektiv på tverrfaglighet av Torunn Paulsen Dagsland tar läsaren till tvärvetenskapliga utmaningar och möjligheter som den nya läroplanen för den norska grundutbildningen ger. Artikeln belyser hur den övergripande delen av läroplanen beskriver begreppet tvärvetenskapligt som en pedagogisk princip och hur detta tillåter lärare att konstruera sin egen förståelse för vad ett tvärvetenskapligt tillvägagångssätt är, och hur olika former av tvärvetenskaplig undervisning kan formas. Undersökningen bygger på dokumentanalys och intervjuer med tolv lärare i gymnasiet som undervisar i naturfag och i kunst og håndverk. Den teoretiska ramen för studien utgörs av Goodlads läroplansteori. Artikeln beskriver vad lärarna placerar i begreppet tvärvetenskapligt och hur de operationaliserar detta i sin undervisning. Studien visar att majoriteten av lärarna hävdar att tvärvetenskap innebär undervisning där ämnen integreras och glider in i varandra. Undersökningen visar dock att när lärarna ser på sin egen operationaliserade undervisning, märker de att de förstår och tillämpar den tvärvetenskapliga metoden på olika sätt. Den fjärde artikeln utgörs av Reasons for knitting blogging and its importance for crafting av Katja Vilhunen, Sinikka Pöllänen and Harri Pitkäniemi. I artikeln beskrivs en studie om orsaker till varför många som håller på med stickning, också väljer att blogga om sin verksamhet och hur bloggandet i sin tur stödjer hantverket. Studien genomfördes som en mixed-methods studie där det empiriska materialet insamlades genom två online enkäter under två olika år i samma grupp av finska bloggare, samt genom essäer skriva efter de senare enkäterna. Studiens kvantitativa data fokuserade på tidsrelaterade förändringar i bloggningen, medan det kvalitativa datat användes som klargörande beskrivningar. Resultaten visar att det fanns flera orsaker till bloggning om stickande. Orsakerna bestod av inspiration och materialisering, känsla av samhörighet och gemenskapsstöd, samt uppmuntran, reflektion och minnen. Studien antyder att stickning och bloggning kompletterade varandra, och att bloggningen stödde utvecklingen av bloggarnas stickning till en seriös fritidsaktivitet bestående av meningsfulla långsiktiga aktiviteter och tydliga mål. Den femte artikeln i numret är skriven av Stina Westerlund och Marcus Samuelsson. Artikeln Lära sig att stå ut – ett bidrag till diskussionen om varför vi har slöjd i skolan fokuserar på den stundvis högljutt ställda frågan som svenska slöjdlärare får bemöta om slöjdens varande som läroämne. Forskarna förankrar diskussionen i teorier om motstånd och ledarskap. Datamaterialet i studien utgörs av tidigare insamlade videoobservationer som tar fasta på hur tre lärare förhåller sig till elever som möter externt eller internt motstånd under slöjdprocesser. Studien visar att lärarnas olika sätt att förhålla sig till, arbeta med och språkliggöra motståndet som eleverna upplever, gör att elevernas erfarenheter av motstånd i skolslöjden blir olika. Artikeln lyfter även fram diskursen om slöjd som ett roligt ämne och vad detta medför för både lärare och elever i stunder av motstånd. Avslutningsvis konstateras att lärares arbete att ge olika typer av stöd utifrån situation och individ är både komplext och utmanande. Enligt forskarna kvarstår det ett behov av att studera balansen mellan olika typer av stöd i slöjdundervisning samt vidareutveckla begrepp som fördjupat ringar in olika kvaliteter i hur lärare i slöjd leder undervisningen. Numrets sista artikel, Utbytesstuderandes erfarenheter av slöjd på universitetsnivå, är skriven av Pia Brännkärr. I artikeln diskuteras universitetens internationalisering från ett mottagarperspektiv. Forskningsfrågan för studien lyder: Vilka erfarenheter synliggör utbytesstuderande från slöjdkursen de deltagit i? Det empiriska materialet består av 13 utbytesstuderandes skriftliga kursuppgifter från en slöjdkurs hösten 2018 vid Åbo Akademi. Genom tematisk analys och med hjälp av programmet Nvivo har studerandes texter analyserats och fem teman har skapats. Resultaten visar att utbytesstuderandes erfarenheter handlar om känslor och personlig utveckling, reflektioner gällande ämnesteknologi, den kommande lärarprofessionen, kontakten till och interaktionen med medstuderande och lärare, samt kopplingar och reflektioner till det omgivande samhället och hemlandet. Studien ger ett internationellt perspektiv på slöjdupplevelser, samt kunskap som hjälper mottagande universitet och lärare att i framtiden anpassa verksamheten så att studerande får bästa möjliga utbyte och erfarenhet. Med dessa artiklar önskar jag er givande och tankeväckande lässtunder, och uppmanar er att aktivt använda Techne Seriens artiklar i utbildning och forskning. Tillsammans bidrar vi till att slöjdforskningen stärks och sprids! En vacker sommardag i Vasa 2021, Mia Porko-Hudd Huvudredaktör
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Dagsland, Torunn Paulsen. "”Det blir ofte vanskelig å få til de tverrfaglige greiene”." Techne serien - Forskning i slöjdpedagogik och slöjdvetenskap 21, no. 3 (June 22, 2021): 32–47. http://dx.doi.org/10.7577/technea.3861.
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Den nye forskriften overordnet del – verdier og prinsipper for grunnopplæringen knytter begrepet tverrfaglighet til tre ulike temaer og fremhever det som et pedagogisk prinsipp for undervisningen i Norge. Artikkelen belyser hvordan denne delen av læreplanverket beskriver begrepet tverrfaglig som pedagogisk prinsipp. Undersøkelsen som ligger til grunn for artikkelen, viser at læreplanen åpner for at lærere kan konstruere sin egen forståelse av hva tverrfaglig tilnærming er, og dermed kan praktisere ulike former for tverrfaglig opplæring. Artikkelen beskriver hva et utvalg av faglærere på ungdomstrinnet (i naturfag og kunst og håndverk) legger i begrepet tverrfaglig slik de forstår bruken i læreplanverket. Videre tar den for seg hva disse lærerne oppfatter som en tverrfaglig tilnærming i sin egen operasjonaliserte undervisning. Flertallet av disse lærerne hevder at tverrfaglighet sett i lys av overordnet del innebærer en undervisning hvor fagene integreres og glir over i hverandre. Imidlertid viser undersøkelsen at når de fleste av informantene ser på sin egen operasjonaliserte undervisning, både forstår de og utøver de den tverrfaglige tilnærmingen annerledes. Eksempler lærerne trekker fram fra egen undervisning, illustrerer at den tverrfaglige tilnærmingen til undervisning både forstås og praktiseres på ulike måter med ulike grader av tverrfaglighet. Artikkelen ser også på i hvilken grad lærerne har erfaring med undervisning på tvers av naturfag og faget kunst og håndverk. Lærerne i denne undersøkelsen vedgår at de ikke har erfaring med tverrfaglig samarbeid mellom disse fagene. Undersøkelsen bygger på en dokumentanalyse og intervjuer av tolv lærere i ungdomsskolen som underviser i naturfag og faget kunst og håndverk. Teoretisk rammeverk for undersøkelsen har vært Goodlad (1977, 1979) sin konseptuelle teori om læreplanens ulike fremtredelsesformer. Nøkkelord: tverrfaglig, tverrfaglig tilnærming, den formelle plan, den oppfattede plan, den operasjonaliserte plan, den erfarte plan og samarbeid på tvers av naturfag og kunst og håndverk.
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Turner, Ben. "Life and the Technical Transformation of Différance: Stiegler and the Noopolitics of Becoming Non-Inhuman." Derrida Today 9, no. 2 (November 2016): 177–98. http://dx.doi.org/10.3366/drt.2016.0132.
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Through a re-articulation of Derridean différance, Bernard Stiegler claims that the human is defined by an originary default that displaces all psychic and social life onto technical supplements. His philosophy of technics re-articulates the logic of the supplement as concerning both human reflexivity and its supports, and the history of the différance of life itself. This has been criticised for reducing Derrida's work to a metaphysics of presence, and for instituting a humanism of the relation to the inorganic. By refuting these claims, this article will show that Stiegler's doubling of différance enables him to articulate the human as constituted by both the individuation characteristic of ‘life’, and that of a technical, psychic, and collective individuation. Putting forward a reading of the logic of the trace in life, and emphasising the aspects of Leroi-Gourhan, Simondon, and Canguilhem that Stiegler uses in his reading of Derrida, I will demonstrate that the political stakes of adaption and adoption in his Noopolitics require this re-articulation of différance. Technics shapes the human future, arising from this differential mutation; marking the invention of the human as the site of the political.
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Muke, Shital S., Deepak Tugnawat, Udita Joshi, Aditya Anand, Azaz Khan, Ritu Shrivastava, Abhishek Singh, et al. "Digital Training for Non-Specialist Health Workers to Deliver a Brief Psychological Treatment for Depression in Primary Care in India: Findings from a Randomized Pilot Study." International Journal of Environmental Research and Public Health 17, no. 17 (September 1, 2020): 6368. http://dx.doi.org/10.3390/ijerph17176368.
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Introduction: Task sharing holds promise for scaling up depression care in countries such as India, yet requires training large numbers of non-specialist health workers. This pilot trial evaluated the feasibility and acceptability of a digital program for training non-specialist health workers to deliver a brief psychological treatment for depression. Methods: Participants were non-specialist health workers recruited from primary care facilities in Sehore, a rural district in Madhya Pradesh, India. A three-arm randomized controlled trial design was used, comparing digital training alone (DGT) to digital training with remote support (DGT+), and conventional face-to-face training. The primary outcome was the feasibility and acceptability of digital training programs. Preliminary effectiveness was explored as changes in competency outcomes, assessed using a self-reported measure covering the specific knowledge and skills required to deliver the brief psychological treatment for depression. Outcomes were collected at pre-training and post-training. Results: Of 42 non-specialist health workers randomized to the training programs, 36 including 10 (72%) in face-to-face, 12 (86%) in DGT, and 14 (100%) in DGT+ arms started the training. Among these participants, 27 (64%) completed the training, with 8 (57%) in face-to-face, 8 (57%) in DGT, and 11 (79%) in DGT+. The addition of remote telephone support appeared to improve completion rates for DGT+ participants. The competency outcome improved across all groups, with no significant between-group differences. However, face-to-face and DGT+ participants showed greater improvement compared to DGT alone. There were numerous technical challenges with the digital training program such as poor connectivity, smartphone app not loading, and difficulty navigating the course content—issues that were further emphasized in follow-up focus group discussions with participants. Feedback and recommendations collected from participants informed further modifications and refinements to the training programs in preparation for a forthcoming large-scale effectiveness trial. Conclusions: This study adds to mounting efforts aimed at leveraging digital technology to increase the availability of evidence-based mental health services in primary care settings in low-resource settings.
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Lee, Jin-Woo, Young-Jin Lee, Hyun-Cheol Cho, Dong-Seop Han, Geun-Jo Han, and Kwan-Soon Lee. "A Technical Analysis for Development of Dual Mode Trailer System." Journal of Korean navigation and port research 32, no. 8 (October 31, 2008): 629–36. http://dx.doi.org/10.5394/kinpr.2008.32.8.629.
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Eimers, P. W. A. "Cijferanalyse: meer dan een techniek." Maandblad Voor Accountancy en Bedrijfseconomie 80, no. 9 (September 1, 2006): 408–14. http://dx.doi.org/10.5117/mab.80.21844.
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Cijferanalyse is een door accountants veel gebruikt controlemiddel. Het is een controlemiddel dat eenvoudig en effi ciënt is toe te passen, maar een ontoereikende uitvoering kan verhinderen dat deze cijferanalyse effectief bijdraagt aan het controleproces. In een tijd waarin de moderne technologie de aanjager is van een toenemende hoeveelheid beschikbare informatie, is het vergelijken en analyseren van cijfers een activiteit waarmee accountants zich veelvuldig bezighouden. Zij hebben er belang bij om de beschikbare data effectief en efficiënt te analyseren en onverwachte fluctuaties tijdig te ontdekken en op te volgen. Deze bijdrage geeft een overzicht van de plaats van cijferanalyse in de jaarrekeningcontrole. Naast de beroepsstandaarden van accountants wordt ingegaan op uitgevoerd onderzoek naar cijferanalyse en cijferanalyse als denkproces, waarbij de zorgvuldigheid van uitvoering van cijferanalyse centraal staat om zo bij te dragen aan een effectieve en efficiënte controle.
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Navrátil, Jiří, and Pavel Pečiva. "KOMERČNÍ CLOUD, ALTERNATIVA NEBO BUDOUCNOST?" Medsoft 2018 30, no. 1 (March 10, 2018): 125–28. http://dx.doi.org/10.35191/medsoft_2018_1_30_125_128.
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Ve zdravotnictví, stejně jako v jiných oborech, se výpočetní technika a internet staly jejich integrální součástí. Počet aplika-cí, které používají VT, dramaticky narůstá. IS v nemocnicích jsou dnes velice komplexní systémy, které mají své koncové body na každém pracovišti. Umožňují dokonalou evidenci událostí, vý-měnu a sdílení dat i jejich archivaci pro budoucí potřeby. V ne-mocnicích výrazně roste i počet instalovaných diagnostických přístrojů, které poskytují informace v obrazové formě. Data, která představují jeden snímek, jsou dnes několikanásobně větší než v minulosti. Roste i počet vyšetření. Co se dnes jeví jako akutní problém, je nárůst objemu a uchovávání dat. Bude výpočetní technika instalovaná v nemocnicích postačovat na pokrytí stále narůstajících potřeb? Jednou z aktuálních otázek budoucnosti jistě bude, jak zajistit udržitelnost a rozvoj těchto systémů. Nebude jedním z řešení použití externích služeb, např. komerčních cloudů, které nabízejí nejen dostatečné kapacity pro zpracování, ale i uložení dat?
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Macken, Lieve, Daniel Prou, and Arda Tezcan. "Quantifying the Effect of Machine Translation in a High-Quality Human Translation Production Process." Informatics 7, no. 2 (April 23, 2020): 12. http://dx.doi.org/10.3390/informatics7020012.
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This paper studies the impact of machine translation (MT) on the translation workflow at the Directorate-General for Translation (DGT), focusing on two language pairs and two MT paradigms: English-into-French with statistical MT and English-into-Finnish with neural MT. We collected data from 20 professional translators at DGT while they carried out real translation tasks in normal working conditions. The participants enabled/disabled MT for half of the segments in each document. They filled in a survey at the end of the logging period. We measured the productivity gains (or losses) resulting from the use of MT and examined the relationship between technical effort and temporal effort. The results show that while the usage of MT leads to productivity gains on average, this is not the case for all translators. Moreover, the two technical effort indicators used in this study show weak correlations with post-editing time. The translators’ perception of their speed gains was more or less in line with the actual results. Reduction of typing effort is the most frequently mentioned reason why participants preferred working with MT, but also the psychological benefits of not having to start from scratch were often mentioned.
Dissertations / Theses on the topic "Technika DGT"
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Gregušová, Michaela. "Modifikace techniky difúzních gelů (DGT) pro charakterizaci přírodních systémů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-233319.
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Diffusive gradient in thin film technique (DGT) represents a relatively new approach for in situ determinations of labile metal-species in aquatic systems. The DGT device passively accumulates labile species from the solution while deployed in situ, and therefore contamination problems associated with conventional collection and filtration procedures are eliminated. This study deals with a possible modification of DGT technique. The key of using DGT technique for speciation analysis of metals is to find out suitable binding phase and diffusion layer. The new resin gel based on Spheron Oxin (5 sulphophenyl-azo-8-hydroxyquinoline) ion exchanger with a higher selectivity to trace metals than Chelex 100 could potentially provide more information on metals speciation in aquatic systems. The performance of this new binding phase was tested for the determination of Cd, Cu, Ni, Pb and U under laboratory conditions. The hydrogel layer based on poly(2-hydroxyethyl methacrylate) was synthesized and tested as a new diffusion gel for application in DGT technique.
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Trávníčková, Jana. "Transport kovů v systému půda/rostlina. Porovnání metody aktivního a pasivního vzorkování (Technika difúzního gradientu v tenkém filmu)." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-233341.
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The doctoral thesis deals with comparison between copper uptake by radish (Raphanus sativus L.) and concentration of copper measured by a DGT-device and concentration of copper obtained by extraction with generally used extraction agents (HNO3, NaNO3 and water). Plants were cultivated in pot experiments on a tested non-treated and gradually spiked soil. The amount of copper was determined in various part of radish (whole plant, above- and below-ground part) after mineralization in the APION mineralizer by ET – AAS. The highest concentration was in belowground part, especially in root tissues and sheel of root bulb. It confirms copper is associated with cell walls. The amount of copper taken by radish up does not pass beyond sanitary standards not even in spiked soils and consummation of radish is not unhealthy. Good correlations were found between copper concentration in radish and the amount of copper extracted with HNO3, NaNO3 and water and the amount found in soil solution. Results of extraction with HNO3 confirmed the amount of copper was stable in spiked soils during the pot experiments. The DGT experiments have shown that the rate of resupply from the solid phase to soil solution is constant during the deployment time. Whereas the release of copper decreases after 24 hours in natural soil. Copper added to soil in form of cupric ions is present in the different form after one month-equilibration than copper present in unspiked soils. The results obtained by DGT measurements were approximately up to two orders of magnitude lower than copper concentration obtained by leaching with sodium nitrate. The extraction with sodium nitrate does not provide true reflection of metal availability to plant root system and soil microorganism. High values of correlation coefficients (R2 > 0,9) were found between concentration of copper in radish plant and the concentration of copper in soil solution measured by DGT technique. Concentration of copper in soil solution was three times higher than concentration measured by DGT technique. Soil solution contains species of copper that are not measured by DGT technique and available to plants. Concentration of metals obtained by DGT measurements is more closely to real concentration of bioavailable forms of metal in soil. Therefore it is possible to recommend the DGT technique as a technique for determination of bioavailable forms of copper in soils.
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Finsterlová, Hana. "Studium vlastností sorpčních gelů pro stanovení rtuti technikou DGT." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216541.
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The aim of this thesis is testing of resin gels used in diffusive gradients in thin films technique (DGT) for determination of mercury in natural waters. The sorbets, chosen for preparation of resing gels were: Duolit GT- 73, Spheron- Thiol, and Chelex 100 and newly modified sorbent Iontosorb AV. At the beginning of work, the preparation procedure of all resing gels was optimized. After optimalization of preparation procedure the resin gels were tested in mercury model solutions. The recovery test and time dependence test were performed. When the basic tests were finished, they were followed by the tests of influence of natural ligand (humic acids and chlorides), and other parameters (above all pH and ionic strenght), on mercury determination by DGT technique.
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Bořek, Tomáš. "Toxické kovy ve vodě a sedimentech vodní nádrže Brno." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216543.
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Diploma thesis deals with usage of the diffusive gradients in thin films technique (DGT) for the determination of labile metal species in the surface water and sediments of Brno water reservoir. Sediment and water samples were collected on the selected sides of Brno water reservoir on September and October 2008. The DGT technique was used for determination of depth profiles of Fe, Mn, Pb, Cd, Zn, Cu, Ni and Al. The DGT probes with three different thicknesses of diffusive layer were applied into the sediment samples. The obtained results gave the information about release of metals from solid phase into the pore water of sediment. The concentrations of Fe, Mn, Pb and Cd in sediments were determined by atomic absorption spectrometry after microwave decomposition. The DGT technique was used also for determination of Fe, Mn, Pb and Cd in surface water from Brno water reservoir.
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Szkandera, Roman. "Testování modifikovaných sorbetů Iontosorb pro užití v technice difúzního gradientu v tenkém filmu (DGT)." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216360.
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6-mercaptopurine was joined by diazotation and copulation reactions on Iontosorb AV. Presence of thiol groups in modified resin was showed by infrared spectrometry. Amount of thiol groups was determined by iodometric titration. Resin gel was preparated from modified resin and agarose and both of them were tested for mercury determination by DGT technique.
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Szkandera, Roman. "Vývoj techniky difúzního gradientu v tenkém filmu (DGT) pro stanoveni rtuti ve vodných systémech." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-233340.
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The theoretical part of this doctoral thesis deals with determination of mercury and its species in aquatic systems. Special attention is paid to the use in situ sampling technique diffusive gradients in thin films technique (DGT) and its development. Current resin gels used for determination of mercury by DGT technique Duolite GT-73, Chelex-100 and Spheron-Thiol are described. Moreover, new types of resin gels including Iontosorb AV modified by imidazole or 6-mercaptopurine and commercially available titanium dioxide. Preparations of resin gels and their basic tests in model solution according to DGT Research are described. Mercury accumulation in relation to time and basic recovery test were tested and capacity of resins was determined. All tested resins meet the requirements of basic DGT Research tests and relative standard deviations of mercury in recovery tests were lower than 10 %. The sorption capacity of resins varied from 1,5 to 6 µmol.l-1 and decreased in following order: Duolite GT-73 > ISAV-IM > Chelex-100 > Spheron-Thiol > TiO2 > ISAV-MP. Mercury sorption on resins was investigated under conditions similar to those in natural waters. It was found that the ionic strength commonly occurring in natural waters does not affect the determination of mercury. The presence of chlorides significantly affects the determination of mercury using DGT with titanium dioxide and therefore this sorbent can not be recommended for the determination of mercury in sea waters. The accumulated amount of mercury, depending on the pH shows that all the sorbents can be used in natural waters with pH in the range form 4 to 8. Mercury sorption is most affected by the presence of humic acids, especially at ion-exchange resins containing other than thiol functional groups. The exception is titanium dioxide for which physical sorption of humic acid metal complexes is typical. Cadmium and copper in model solutions in the molar balance of the excess mostly influenced the sorption of mercury on Chelex-100 and Spheron-Thiol resins. After laboratory tests, the DGT units with studied sorbents were used for the determination of mercury in natural waters of South Moravia (Svratka, Jihlava and Svitava river). Mercury concentration determined using DGT units containing Duolite GT-73 resin was comparable to the total dissolved concentration of mercury in river water provided by direct determination using AAS technique. Order of magnitude smaller concentrations than the total dissolved mercury concentration were found using DGT containing Spheron-Thiol and ISAV-MP resins. These sorbents are probably able to capture only mercury present in the form of labile complexes. This can be used for speciation analysis if more DGT units with different resins are deployed together. Subtracting the measured DGT Spheron-Thiol or ISAV-MP concentrations from the DGT Duolite GT-73 concentration, information about the amount of mercury present in the form of stabile complexes can be obtained. The amount of mercury determined after application of DGT units containing ISAV-IM, Chelex 100 or TiO2 can probably represent the mercury fraction bound in even weaker complexes than fraction determined by Spheron-Thiol and ISAV-MP DGT.
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Němec, Tomáš. "Formy vybraných kovů ve vodních systémech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216358.
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The diffusive gradient in thin films technique (DGT) was used to measure concentration of labile metal-species (Cu, Ni, Pb) in the waste water from Faculty of Chemistry, Brno University of Technology.
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Paříková, Lucie. "Rtuť v odpadních vodách." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216362.
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In the time period from November to April of the academic year 2007/2008 presence of mercury and its forms was monitored in the waste waters of Faculty of Chemistry, VUT in Brno. The level of mercury was determined as total mercury with help of the atomic absorption spectrometry method and in available forms by diffusive gradient in thin film technique.
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Kovaříková, Vladěna. "Vývoj gelových technik pro in situ měření biodostupných forem kovů v půdách a sedimentech." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-233310.
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The doctoral thesis deals with usage of gel techniques for in situ measurement of bioavailable metals in soils and sediments. The DGT technique was applied to soil samples from the localities of Zlín, Tuřany and Chrlice for estimation of bioavailable metals in soils. These soils were amended by sewage sludges in years 1980-1987. The experiment using diffusive gels with different pore size, APA and RG gels, has shown that the DGT can be used for assessment of trace metal soil complexes - small inorganic and larger organic. The results obtained by DGT measurements were approximately up to two orders of magnitude lower than metal concentrations obtained by leaching with sodium nitrate. The leaching with sodium nitrate does not provide true reflection of metal availability to plant root system and soil microorganisms and the DGT technique seems to be a better predictor of metal bioavailability. Only small differences between undisturbed and homogenized soil samples were found out by application of DGT to soil samples from localities of Veverská Bítýška and Ostrovačice. The undisturbed soil is not homogenous and the DGT unit gives information only about the part of the soil which is in direct contact with the unit. The procedure with soil slurry can be recommended for the characterization of large soil areas and estimation of bioavailable metals in soils. Gel techniques were also used for the study of processes occuring in sediments. Mercury species and other metals were analysed in surface water, pore water and sediments collected from two sampling sites in the Dele River in northern France. This river had been polluted during the last century by the activity of Métaleurop factory, which dealt with metal ore treatment. The application of DGT technique using two specific ion-exchange resins, Chelex-100 and Duolite GT-73, provided assessment of mercury in sediment pore water. DGT and DET techniques together with centrifugation provided also high resolution depth profiles of Fe, Mn, Zn, Pb, Cr and Cd in pore water. It is not possible to determine which sampling site was more contaminated. Only small differences in mercury species and metal content were observed between sampling sites. The Dele River can be classified as contaminated river according to total mercury content in sediments and as slightly contaminated river from the point of view of methylmercury content. Correlations between mercury species and sulphide content confirm that total mercury and sulphide content count among factors influencing the mercury release to pore water and controlling processes of methylation and demethylation. Only low toxicity of sediment slurries was found out by the bioluminiscence test with Vibrio fischeri. The results of doctoral thesis demonstrate gel techniques as a very good tool in environmental analysis.
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Jaša, Petr. "Techniky pro získávání dat v genomice." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-412789.
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First of all, this thesis sets itself a goal to introduce some common technics for datamining in genomics and as a next step to implement own algorithm like algorithm BLAST. In the concrete, this work is pointed to sequences of DNA. The DNA sequence contains in itself genetic information, which is template for living organism. For explanation this information can be used number of technics. This paper describes algorithm Fasta and algorithms from BLAST family. With these algorithms, it is possible to gain a lot of important information even about such DNA sequences, where only primary structure is known. Principle of these algorithms is based on alignments of one query sequence, which we want to obtain some information from, with many sequences stored in database. According to result alignment, it is possible to determine many features of the query sequence.
Books on the topic "Technika DGT"
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Maddox, Richard. The DAT technical service handbook. New York: Van Nostrand Reinhold, 1994.
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Pharo, Helge Ø. Hjelp til selvhjelp: Det indisk-norske fiskeriprojektets historie 1952-72. [Oslo]: Norsk utenrikspolitisk institutt, 1986.
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Gillis, Herlitz. Det är Afrika som lockar: Varför biståndsarbete? Uppsala: Etnologiska institutionen, 1987.
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Iyer, K. V. How DGTD assists industrial development. New Delhi: Indu Publications, 1988.
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Serdar, Dave. TMDL technical assessment of DDT and PCBs in the Lower Okanogan River Basin. Olympia, WA: Washington State Dept. of Ecology, 2003.
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Serdar, Dave. TMDL technical assessment of DDT and PCBs in the Lower Okanogan River Basin. Olympia, WA: Washington State Dept. of Ecology, 2003.
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McGrayne, Sharon Bertsch. Prometheans in the Lab: Chemistry and the Making of the Modern World. New York: McGraw-Hill Trade, 2001.
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International Symposium on VLSI Design, Automation, and Test (2006 Hsin-chu shih, Taiwan). International Symposium on VLSI Design, Automation, and Test (VLSI-DAT) : proceedings of technical papers : April 26-28, 2006 : Hsinchu, Taiwan. Hsinchu, Taiwan: Industrial Technology Research Group, 2006.
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Siegfried, Bleicher, and Deutscher Gewerkschaftsbund, eds. Technik für den Menschen: Soziale Gestaltung des technischen Wandels : eine Dokumentation : Technologiepolitische Konferenz 1985 : Vollbeschäftigung und Lebensqualität durch Mitbestimmung, Arbeitszeitverkürzung, Humanisierung : Bonn (Beethovenhalle) 12.-14. September 1985 : DGB. Köln: Bund-Verlag, 1987.
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Sewlal, Robin, ed. REFLECTIONS of the SOUTH AFRICAN MEDIA 1994 - 2019. Radiocracy, 2021. http://dx.doi.org/10.51415/dut.3.
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Prior to 1994, the media operated in an environment that can best be described as ‘suppressed’. Diversity of thoughts, views and opinions on media platforms were non-existent as the regime, at the time, ruled with an iron-fist. A variety of print media outlets sought to reflect reality, but it was a steady struggle especially for those with meagre resources, and exacerbated by the constant clampdowns. The state-run broadcaster, if anything, entrenched discriminatory principles and practices. Given our precarious past, the birth of democracy proved to be the perfect panacea for a promising pathway for the media fraternity. Transformation, in more ways than one, permeated the sector. Reflections of the South African Media: 1994-2019 is a compilation by authors who have peculiar insight of and excelled in the different areas of the fast-developing industry in the first 25 years of South Africa’s democracy. And they are no ordinary authors. Every chapter contributed came from women and men who had, through the years, a direct link with ML Sultan Technikon, Technikon Natal, Durban Institute of Technology (DIT) or Durban University of Technology (DUT) * either as a student, lecturer, visiting professor, speaker or associate. Compiling and editing this book has been an incredibly invigorating experience. It was never in doubt whose image will adorn the cover of the book, so it was beautifully uplifting that many authors, not knowing my choice, gave Nelson Mandela due recognition. My brief to the authors was simple: let me have your personal lookback in your own style on the topic that you are most comfortable with. All of them stepped up to the plate, and the vast array of content in the book bares strong testimony. A section titled Journeys in Journalism encapsulates input from alumni of DUT Journalism – they were afforded free reign to trace the territory they traversed. I’m indebted to each and every contributor for generously volunteering their precious time and talent to the book. They were simply magnificent. It has to be said that this publication far exceeded my expectations as it, initially, was a humble idea to celebrate 25 years of the media industry with a handful of contributions. Little did I realise that my desk will be flooded with 40 pieces of excellence and a Foreword penned by the brilliant Jeremy Thompson. My eternal gratitude must also be extended to the small team of assistants for understanding my vision upfront and rallying remarkably throughout. Once you’ve enjoyed the read, I invite you to share Reflections of the South African Media: 1994-2019 with whoever you believe can benefit from its rich and diverse content!
Book chapters on the topic "Technika DGT"
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Hudson, Ian, Thea Norman, Shawn Dolley, and Dan Hartman. "DAC Assessment Tool (DAT)." In DAC Trials. The Global Health Network, 2021. http://dx.doi.org/10.48060/tghn.3.
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The DAC Assessment Tool (DAT) is a questionnaire which may be used or completed by the study PI and her/his team covering design, analyze, and communicate topics important to consider when designing informative studies. While not all points are relevant to all studies, in general they are intended to promote sound and proven scientific methodology combined with the use of recent innovations in trial design. For example, in addition to supporting PI teams as they plan their study, fully completed DATs can serve as diagnostic guides to help study stakeholders assess whether a proposed study is likely to provide definitive answers and lead to implementable results. Completed DATs help identify gaps in study planning that need to be addressed with funding and technical partnerships before a study is finalized or initiated.
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Nguyen, Hoai Son. "Topology Optimization for Heterogeneous DHT-Based Multicast." In Applying Integration Techniques and Methods in Distributed Systems and Technologies, 134–55. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8295-3.ch006.
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Since the deployment of IP multicast remains restricted due to many practical and political issues, researchers have shifted focus to exploiting application-layer multicast for multicast data delivery. Recently there has been considerable interest in applying DHT routing algorithms to application-level multicast. However, early DHT-based multicast protocols are insufficient in addressing a number of technical issues such as heterogeneous capacity of nodes or node churn. In this chapter, the author describes a solution called BAM-Chord (i.e., Bandwidth Adaptive Multicast over Chord) that optimizes the topology of a multicast tree based on node bandwidth. In the proposed solution, node position (i.e., node identifier) on a BAM-Chord ring will be decided based on node bandwidth capacity such that it can build a wide and balanced multicast tree rooted at the source node. As a result, BAM-Chord protocol can utilize network resources of every node to reduce the depth of the multicast tree and take advantages of DHTs in maintaining the multicast tree.
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Duschinsky, Robbie, and Sarah Foster. "Mentalization-based therapies." In Mentalising and Epistemic Trust, 216–37. Oxford University Press, 2021. http://dx.doi.org/10.1093/med-psych/9780198871187.003.0009.
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Clinical work as a psychoanalyst working with adults and children directly informed Fonagy’s concern with mentalizing, which grew out of technical innovations in ‘developmental help’ offered at the Anna Freud Centre. In turn, the theory developed by Fonagy and colleagues fed into the emergence of mentalization-based therapy (MBT) as a treatment modality. Initially, in the 1990s, the target of this intervention was patients with borderline personality disorder (BPD). However, MBT has subsequently been used with patients facing a variety of mental health symptoms, including common symptoms like anxiety and depression. This chapter will describe the development of MBT over time, including variants such as dynamic interpersonal therapy (DIT). We will also consider some remaining questions about MBT, including the potential for MBT to harm some groups of patients.
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Toler, Lisa. "Developing Project Team Cohesiveness in a Virtual Environment." In Advances in IT Personnel and Project Management, 136–59. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9688-4.ch009.
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As more projects require the specialized technical skills of those who work in virtual environments due to dispersed geographic locations, project managers of these distributed virtual teams (DVT) must gain insight into achieving project success amongst team members who hold varying operational and world perspectives. When organizational managers decide to implement virtual teams (VT), can they develop strategies to overcome the lack of social interaction, cultural differences, and preconceived notions that can hinder the development of a collaborative and cohesive team? In addition, leading DVTs in a manner that encourages collaboration, diversity, competency building, open communication, and overcoming feelings of isolation must be met in this technology-based environment. This chapter addresses the dilemma of managers in which they must have a clear understanding of what communication and relationship-building techniques and management systems are best suited.
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Hashemi, Mukhtar, and Enda O’Connell. "Science and Water Policy Interface." In Data Mining, 405–34. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2455-9.ch020.
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Despite many advances in the field of hydroinformatics, the policy and decision-making world is unable to use these highly technical decision support systems (DSSs) because there has been an undue emphasis on the technological aspects. The historical analysis of hydroinformatics concepts and modelling shows that the technical aspects have been incorporated far better than the social aspects. Hence, there have been calls for the development of ‘socio-technical’ DSSs. However, far greater effort is required to incorporate social and political sciences into the domain of DSSs. The goal of this chapter is to elaborate on the illusive interface between science and water policy within the context of DSSs. It is an attempt to address one main question: how to link or find an interface between policy (institutional matters) and science (technical and natural environment aspects). To achieve this goal, a new paradigm for the DSS modelling approach has been envisaged based on combining multiple theoretical and analytical frameworks into a single methodological framework to attain a linkage between science and policy-making. The integrated methodological framework comprises of: (1) two ‘conceptual’ frameworks: (a) decision-making perspectives and (b) IWRM interface frameworks; (2) analytical frameworks: (a) DPSIR socio-technical assessment and (b) institutional analysis (IA) frameworks; (3) core engine of the DSS consisting of coupled decision support tools (DST) such as process, planning and evaluation models; and (4) a stakeholder participation interface framework consisting of (a(a multi-windowed dynamic cyber stakeholder interface (MDCSI) system and (b) DSS performance assessment (uncertainty and risk analysis) tools, within a shell of a graphical user interface (GUI). From experience, it can be concluded that DSSs are not just about software packages but they are a participatory communication platform for an interactive multi-stakeholder decision-making process. The required science-policy interface can be achieved by using a unique analytical approach in which technical, policy and institutional frameworks are combined within a DSS platform with an output framework, the MDCSI system, that facilitate policy dialogue by having a dynamic and interactive policy interface which can be linked to other technical and non-technical systems. DSSs should be integrated with institutional and socio-political frameworks to help attain both financial and institutional sustainability.
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Sharma, Ashish K., and Sunanda Khandait. "A Novel Fuzzy Integrated Customer Needs Prioritization Software Tool for Effective Design of Online Shopping Websites." In Research Anthology on E-Commerce Adoption, Models, and Applications for Modern Business, 634–55. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8957-1.ch034.
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Albeit, online shopping has grown much recently, users' rate of satisfaction has declined due to the ineffective design of online shopping websites. Thus, the companies involved are craving for well-designed websites. Effective website design involves decision making and thus this paper considers Quality Function Deployment (QFD) as it is a strong decision-making tool. However, QFD uses crisp scoring approach that generates uncertainty and vagueness resulting in impreciseness and inconsistency in results. The issue can be addressed using fuzzy integration. QFD involves prioritization of Customer Needs (CNs) and Technical Requirements (TRs). However, the paper focuses on only CNs prioritization. Also, the existing software's lack the indispensable fuzzy support feature to handle the uncertainty and vagueness. Thus, the paper presents a novel fuzzy integrated customer needs prioritization software tool. The tool is built using Visual Basic Dot Net (VB.Net) and MS-Access. A real-life example is presented to demonstrate the viability of the software tool.
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Sotiriou, A. "The "Umbrella" Distributed Hash Table Protocol for Content Distribution." In Encyclopedia of Mobile Computing and Commerce, 960–65. IGI Global, 2007. http://dx.doi.org/10.4018/978-1-59904-002-8.ch160.
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The technical and ethical issues of these systems proved to be their weak point. Systems that have no central point of control and distribute functions among all users seem better fit for sharing and distributing content. A solution has been proposed in the form of distributed hashtables (DHTs). This article proposes an alternative architecture for content distribution based on a new DHT routing scheme. The proposed architecture is well structured and self-organized in such a way as to be fault-tolerant and highly efficient. It provides users with content distribution and discovery capabilities on top of an overlay network. The novelty of our proposed architecture lies in its routing table which is maintained by each node and is of constant size, as opposed to other algorithms that are proportional to the network’s size (usually O(logN)). All operations in our architecture are of O(logbN) steps (entry, publishing, and lookups) and degrade gracefully as up-to-date information of the routing table decreases due to numerous node failures.
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Ocampo-Martínez, Carlos, Sebastián Tornil, and Vicenç Puig. "Robust Fault Detection Using Interval Constraints Satisfaction and Set Computations11This work has been supported by the CICYT of Spanish Science and Technology Ministry (DPI2002–03500) and by of DGR of Generalitat de Catalunya (SAC grup 2001/SGR/00236)." In Fault Detection, Supervision and Safety of Technical Processes 2006, 1216–21. Elsevier, 2007. http://dx.doi.org/10.1016/b978-008044485-7/50205-0.
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Ocampo-Martínez, Carlos, Vicenç Puig, and Joseba Quevedo. "Actuator Fault Tolerance Evaluation of Constrained Nonlinear MPC Using Constraints Satisfaction11This work has been supported by the CICYT of Spanish Science and Technology Ministry (DPI2002-03500) and by of DGR of Generalitat de Catalunya (SAC grup 2001/SGR/00236)." In Fault Detection, Supervision and Safety of Technical Processes 2006, 1413–18. Elsevier, 2007. http://dx.doi.org/10.1016/b978-008044485-7/50238-4.
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Wang, Fen, and Guisseppi Forgionne. "BSC-Based Framework for E-Business Strategy." In Electronic Business, 440–50. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-056-1.ch028.
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E-business is far more about strategy than technology (Raisinghani & Schkade, 2001). An effective e-business strategy is concerned with e-business multidimensional characteristics associated with different levels, parties, elements, and growth pattern features (Bakry & Bakry, 2001). In the process, the strategy must incorporate the effects of the instant and global Internet communication mechanism on the company’s business management architecture. The global reach and interconnectivity of the Internet have spawned new models of e-business strategy and radically transformed existing ones (Pant & Ravichandran, 2001). Indeed, what distinguishes many of the dot-coms is not their new technical power, but the radical new business models (Hamel, 2000). Aided by such innovative e-business models, managers will be able to identify the major decision factors involved in their business strategies and generate strategies that would improve their overall performance and profitability. In the current context, four essential perspectives are identified to be associated with an e-business strategy: financial, customer, internal processes, and learning and growth. These four perspectives were first introduced in early 1990s as the balanced scorecard concept (BSC) (Kaplan & Norton, 1992). Because the BSC methodology explicitly focuses on links among business decisions and outcomes, it is intended to guide strategy development, implementation, and provide reliable feedback for management control and performance evaluation. This BSC rationale is thereby appealing to managers who face new challenges in the current turbulent e-business climate. The real challenge is to determine how the BSC can be successfully applied in the context of e-business’s constantly changing environment of interdependencies (Hasan & Tibbits, 2000). E-business introduces new business objectives and strategies and the old measures of success may no longer apply. It is anticipated that the departure from the original BSC for a strategic ebusiness management framework would be more radical than the existing BSC adaptations (e.g., Martinson’s balanced IS scorecard; Martinsons, Davison, & Tse, 1999).
Conference papers on the topic "Technika DGT"
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Ştefan, Antoniu, Ioana Andreea Stănescu, and Jannicke Madeleine Baalsrud Hauge. "Approaches to Reengineering Digital Games." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60061.
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Research has highlighted Digital Games (DG)’ capacity to enhance skill and abilities through their persuasiveness and motivational appeal, which can support immersive, situated and user-centered experiences. DG development remains a challenge both in terms of costs and of the diverse range of advanced, multi-disciplinary expertise required to develop a DG. Developing DGs for such a complex domain as Mechanical Engineering (ME) to better equip engineering students to practice at the intersection of complex systems increases this challenge. An alternative to decrease costs is to capitalize on existing DGs. The paper analyzes opportunities for DG adaptation, in order to enable the reengineer of existing games to fit specific purposes and support knowledge transfer. The authors build upon current research and practices to construct an approach for adapting DG content. Two case studies are presented as a proof of concept to exemplify the different levels of the digital game reengineering process.
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Furukawa, Tomonari, Yoshitaka Wada, John G. Michopoulos, and Athanasios Iliopoulos. "Probabilistic Vision-Based Full-Field Displacement and Strain Measurement via Uncertainty Propagation." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70969.
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This paper presents formulations that enable the vision-based measurement of displacement and strain fields extensively in a probabilistic manner. The proposed formulations are built on the dot centroid tracking (DCT) method by digital cameras, which measures the darkness of each pixel in gray scale, identify dots marked on a specimen, derives dot centroids using pixel darkness information and derives displacement and strain fields by tracking the centroids and interpolating the nodal displacements and strains. Under the Gaussian assumption, the proposed formulations analytically propagate the standard deviation of uncertainty in darkness measurement and estimate that in the displacement and strain field measurement. As the first step, the formulations were completed for continuous field measurement with triangular elements. Most advantageously, the proposed formulations allow discussion on measurement error bounds, which also enables the quantitative comparison of the DCT method to the other measurement techniques. For numerical validation, standard deviations of nodal displacements and strains estimated from the known darkness uncertainty were compared to those derived from large samples created with the same darkness uncertainty. The results show the validity of the proposed formulations and their potential in measurement with reliability.
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Wang, X. F., and W. D. Zhu. "A New Spatial and Temporal Incremental Harmonic Balance Method for Obtaining Steady-State Responses of a One-Dimensional Continuous System." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60194.
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A new spatial and temporal incremental harmonic balanced (STIHB) method is developed for obtaining steady-state responses of a one-dimensional continuous system. In the STIHB method, Galerkin procedure for a governing partial differential equation (PDE) in the spatial coordinate to obtain a set of ordinary differential equations (ODEs) and the harmonic balance procedure for the set of ODEs in the temporal coordinate to obtain the harmonic balanced residual are combined to be Galerkin procedures for the PDE in the spatial and temporal coordinates to simultaneously obtain the spatial and temporal harmonic balanced residual, and integrations in Galerkin procedures are replaced by the fast discrete sine transform (DST) or fast discrete cosine transform (DCT) in the spatial coordinate and the fast Fouriour transform (FFT) in the temporal coordinate, which is referred to as a DST-FFT or DCT-FFT procedure. The harmonic balanced residual for an arbitrary second-order PDE can be automatically and efficiently obtained by a computer program when the expression of the PDE is given, where numbers of basis functions in the spatial and temporal coordinates can be arbitrarily selected and no more extra derivations are needed. There are two versions of the STIHB method. In the simple version, the DST-FFT or DCT-FFT procedure to calculate the harmonic balanced residual and Broyden’s method that is a quasi-Newton method are combined to find solutions that make the residual vanish, which can be used to construct steady-state solutions of the PDE. In the complex version, the exact Jacobian matrix is derived and used in Newton-Raphson method to achieve faster convergence. While its derivation is complex, the exact Jacobian matrix for the arbitrary PDE can be automatically and efficiently obtained by following a calculation routine when the linearized expression of the PDE is given, and it can be easily implemented by a computer program. The exact Jacobian matrix can also be used to study stability of steady-state responses, where no more extra derivations are needed. The STIHB method is demonstrated by studying the transverse vibration of a string with geometric nonlinearity; its frequency-response curves with weak and strong nonlinearities and different numbers of trial functions are calculated, and stability of solutions on the curves is studied.
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Tong, Xianqiao, Tomonari Furukawa, and Saied Taheri. "Speed Enhancement of Displacement and Strain Field Measurement Using Graphics Processing Unit." In ASME 2012 Rail Transportation Division Fall Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/rtdf2012-9413.
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This paper presents the speed enhancement of displacement and strain field measurement using graphics processing unit (GPU) towards real-time field measurement. The displacement and strain field measurement technique to be enhanced is a vision-based dot centroid tracking (DCT) method which measures the darkness of each pixel in gray scale, identifies dots marked on a specimen, derives dot centroids using pixel darkness information and derives displacement and strain fields by tracking the centroids and deriving and interpolating the nodal displacements and strains. The proposed enhancement begins by finding parallel processes in both the image analysis phase and the field estimation phase. The centroid derivation and tracking of marked dots in the image analysis phase are computed independently for each marked dot whereas the derivation, interpolation and estimation of the displacement and strain field are computed parallel as well with respect to the interpolated points which covers the evaluated field. The proposed enhancement then accelerates the displacement and strain field estimation by storing the pixel and dot information as a predefined index look-up table and a new measurement in a shared buffer in the GPU’s shared memory. The use of the shared buffer with a look-up table avoids the duplicated memory allocation and contributes to not only speed but also memory usage. Numerical examples have first investigated the validity and performance of the proposed enhancement through parametric studies. A comparison with field measurement using only a central processing unit (CPU) shows that the proposed enhancement gains at least 10 times speedup when the same accuracy is attained. The proposed approach was then applied to the displacement and strain field measurement of a rail in a three-point bending test under relatively fast periodic loadings, and its ability to capture real-time behavior has been demonstrated.
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"Technical Program Committee." In 2011 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFT). IEEE, 2011. http://dx.doi.org/10.1109/dft.2011.6.
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"Technical Program Committee." In 2017 Seminar on Detection Systems Architectures and Technologies (DAT). IEEE, 2017. http://dx.doi.org/10.1109/dat.2017.7889146.
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"TTTC: Test Technology Technical Council." In 2009 24th IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems (DFT). IEEE, 2009. http://dx.doi.org/10.1109/dft.2009.60.
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Yao, Xueyang, and Natalie Baddour. "Numerical Computation of the Discrete 2D Fourier Transform in Polar Coordinates." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85616.
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The discrete Fourier transform in Cartesian coordinates has proven to be invaluable in many disciplines. However, in application such as photoacoustics and tomography, a discrete 2D-Fourier transform in polar coordinates is needed. In this paper, a discrete 2D-Fourier transform in polar coordinates is presented. It is shown that numerical implementation is best achieved by interpreting the transform as a 1D-discrete Fourier transform (DFT), a 1D-discrete Hankel transform (DHT) and a 1D-discrete inverse transform (IDFT) in sequence. The transform is tested by numerical simulations with respect to accuracy and precision for computation of the continuous 2D transform at specific discrete points. It was found that both the forward and inverse transform showed good accuracy to approximate the continuous Fourier transform. Moreover, good precision results were obtained, which indicate that the proposed transform itself does not add much error.
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Yang, Shubo, and Xi Wang. "A Comparative Study on N-Dot Acceleration Technique." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57341.
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For aero-engines, the throttle command is often changed dramatically, which will perturb the control error (defined as actual rotor speed minus desired rotor speed) of the primary set-point controller. When the perturbation is amplified by the gain, the controller will output unreasonable values of control variables, i.e. the mass of fuel flow, and cause abnormal engine operation. For this reason, limit protection controllers are applied to constrain the controlled variables at a safe level. Besides, the transient control modes are required to provide smooth, stall free operation of the engine. The schedule-based approach, which is the traditional transient control mode, is easy to implement but the performance of acceleration and deceleration will suffer from degradation or manufacturing errors. With the development of digital control system, N-dot control mode has been adopted in some modern aero-engines, which focuses on rotor acceleration rather than rotor speed. To some extent, this method can overcome the obstacles of the schedule-based approach. In terms of N-dot control mode, there are two main methods: direct control and indirect control. The former one suggests using a differentiator to get the actual N-dot value, then minus it by the desired N-dot value to get the error of N-dot. When the error is reduced to zero by a controller, the actual N-dot value follows the desired N-dot value. The latter one suggests inputting the desired N-dot value to an integrator for a rotor speed value, which essentially transforms the N-dot command to the speed command. With this transformation, the familiar set-point controller can be used to control the engine following the N-dot command indirectly. This paper presents implementation schemes of the two types of N-dot control, and focuses on a comparative study of them. To avoid integral windup issue when the indirect method switches controllers, such as from N-dot controller to set-point controller, we have introduced a logic to determine whether the integrator is operational. This design allows flexible switchings. After frequency domain analysis, we find out that the essential difference between the two schemes lies in the magnitude of crossing frequency. The direct N-dot control, with a higher crossing frequency, has faster responses but is sensitive to noise. While the indirect N-dot control, with a lower crossing frequency, has slower responses but can suppress noise. When the dynamic nature of sensor and actuator is considered, the direct N-dot control with a higher crossing frequency may cause the close-loop system unstable. Using a reliable aero-engine mathematical model, we designed a set of simulations to test the two N-dot schemes. The simulation results showed that the direct N-dot control performed better than the indirect one under ideal situation. When noise or dynamic nature of sensor and actuator was taken into consideration, however, the indirect N-dot control was more robust, which confirmed the analysis above.
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Lee, Jaehoon, Joseph Duffy, and Max Keler. "The Optimum Quality Index for the Stability of In-Parallel Planar Platform Devices." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1135.
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Abstract The paper investigates primarily the geometrical meaning of the determinant of the Jacobian (det j) of the three connector lines of a planar in-parallel platform device using reciprocity. A remarkably simple result is deduced : The maximum value of det j namely, det jm is simply one-half of the sum of the lengths of the sides of the moving triangular platform. Further, this result is shown to be independent of the location of the fixed pivots in the base. A dimensionless ratio λ = |det j| / det jm is defined as the quality index (0 ≤ λ ≤ 1) and it is proposed here to use it to measure “closeness” to a singularity. An example which determines the optimal design by comparing different shaped moving platforms having the same det jm is given and demonstrates that the optimal shape is in fact an equilateral triangle.
Reports on the topic "Technika DGT"
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REBERGER, D. W. Technical Information to Support Double Shell Tank (DST) Emergency Annulus Pumping [SEC 1 and 2]. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/804768.
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THOMPSON, R. L. Final Report Technical Review Panel for Electrochemical Noise (EN) Based Corrosion Monitoring of Hanford Double Shell Tanks (DST). Office of Scientific and Technical Information (OSTI), July 2001. http://dx.doi.org/10.2172/807555.
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CALS TEST NETWORK WRIGHT-PATTERSON AFB OH. Technical Raster Transfer Using: Grumman Aerospace Corp. Data Supporting: SA/ALC-TIRA's F15 DST Program, MIL-R-28OO2A (Raster) Quick Short Test Report. Fort Belvoir, VA: Defense Technical Information Center, May 1994. http://dx.doi.org/10.21236/ada312331.
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Moran, Traci L., Kayte M. Denslow, Michael R. Larche, and Samuel W. Glass. NDE Technology Development Program for Hanford DST Non-Visual Volumetric Inspection Technology – Phase II; Technical Letter Report on Air-slot NDE Sensor Maturation Testing. Office of Scientific and Technical Information (OSTI), August 2018. http://dx.doi.org/10.2172/1605746.
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Lord, David L., and Raymond Allen. Technical Proposal for Loading 3000 Gallon Crude Oil Samples from Field Terminal to Sandia Pressurized Tanker to Support US DOE/DOT Crude Oil Characterization Research Study. Office of Scientific and Technical Information (OSTI), October 2016. http://dx.doi.org/10.2172/1330199.
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