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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
481

The initial year of educational television in the seventh grade in a selected Atlanta public school

Estes, Sidney Harrison 01 January 1959 (has links)
No description available.
482

Opening doors| A collective case study of integrating technology in the preschool through 3rd grade classroom in a developmentally appropriate way

Cameron, Amy Louise Cox 03 November 2015 (has links)
<p> Children today are growing up in a technology-saturated world and yet early childhood teachers do not typically include technology in their classrooms, or if they do, they include it inappropriately. The literature states that integrating technology in early education can yield many benefits, but many teachers of young children avoid using technology because they do not know how to incorporate it appropriately. This dissertation is an exploratory observational study of early childhood teachers (preschool through third grade) who integrate technology in their programs in developmentally appropriate ways.</p><p> This study involved three classroom teachers who were identified as model teachers at integrating technology in their classrooms: a preschool teacher and two kindergarten teachers. The study was guided by the recommendations from the National Association for the Education of Young Children (NAEYC) and the Fred Rogers Center for Early Learning and Children&rsquo;s Media at Saint Vincent College (2012) position statement for early childhood teachers in the appropriate use of technology and digital media in the early childhood classroom.</p><p> In this exploratory collective case study, visits to the classrooms were conducted several times and observations were performed. Checklists and field notes were used to record the findings. The teachers were interviewed before and after the observations to create a clearer picture of the classroom practices. This resulted in three cases that can serve as examples for teachers on how to integrate technology in the early childhood classroom in a developmentally appropriately way for young children. This study also provides recommendations for teachers who want to provide children with digital learning tools that can extend, enrich, and scaffold their learning. This study contributes four conclusions and five recommendations to guide teachers in integrating technology in a developmentally appropriate way for young children.</p>
483

Examining student discussion forum participation| A critical analysis of interaction in a fully online classroom

Becher, David 27 October 2015 (has links)
<p> Student participation in online classroom discussion fora is becoming an increasingly important subject to examine and analyze because of the potential implications participation can have on student performance and persistence. The objective of this study was to determine if a student&rsquo;s participation level in online course discussion fora at a fully online institution serving more than 110,000 students was, associated with the grade earned in the course and the likelihood that the student would reenroll for additional courses within a three-month time frame. An analysis also was performed on data collected from a survey administered to a sample of students; the survey asked for their perceptions of their own participation as it related to the online courses they recently completed. This study was unique compared to other studies addressing student participation in the online classroom because the sample of data analyzed consisted of more than 91,000 unique students, 433 unique courses, more than 16,000 course sections, and more than seven million discussion forum posts consisting of more than 1.2 billion words. However, the results of this study were not unique and mirrored other studies&rsquo; results in that, students who had higher participation rates in the classroom, as measured by the size and number of discussion forum posts, tended to earn higher grades and enroll in additional courses. Results from the survey showed that students more strongly agreed that they participated in the discussion fora on a regular basis than spending time doing things such as helping other students or having fun in other classroom conversations.</p>
484

A preliminary educational technology maturity model

Rintala, Gerald O. January 2000 (has links)
The current technological revolution has necessitated a new way to view the maturity of its computing environment within a given educational system. Adapting a model from the software industry which assesses the maturity of an organization, the researcher has developed an educational technology maturity model consisting of two dimensions: technology availability and teacher fluency with that technology. The purpose of the model is to locate a particular school within a given school district on a concept grid consisting of Technology Availability on an X-axis, and Teacher Fluency on the Y-axis. The continuum for each of the axes range from a Level 1 (the lowest) to a Level 5 (the highest). One of the uses of such a model is to give a school district a means to assess individual schools against a baseline within the district. This information can assist in the development of a technology plan if none exists, or to revise an existing plan to accomplish the goals of the district. Future uses may include relating technology assessment to achievement scores in schools or districts.
485

Exploration of relationships from texts using self-organizing maps

Lu, Weiping January 2007 (has links)
This thesis explored and visualized the relationships of documents data, based on the technique of self-organizing maps (SOM), a subtype of artificial neural network for visualizing high-dimensional data in low-dimensional views. The source data for this thesis are the full Extensible Markup Language (XML) texts of A Standard Corpus of Present Day Edited American English. The first step is transforming these XML files to produce a term-document matrix, including stop word removal, stemming, tf-idf (term frequency–inverse document frequency) weighting, global filtering; here rows of this matrix represent documents as n-dimensional vectors. Secondly, these vectors are clustered and visualized by SOM consisting of neurons, each neuron relatives to a set of documents with a certain number of same terms. Then a network has been constructed from SOM, with vertices set of neurons and documents, lines set of linkages between neurons and documents. Finally this network exports to the Pajek for analysis and final visualization.
486

Maskinskydd på rullriktverk

Wallstedt, Johan January 2007 (has links)
ESAB is a world leader in production of welding consumables and equipment. The company manufactures, among other things, welding electrodes. A roller straightening unit is used in the cutting process to straighten the wire, which the welding electrode consists of, by adjusting some of the rollers during operation. According to ESAB’s standard and the European machinery directives, moving parts of machinery, such as rollers of the roller straightening unit, must be out of the operator’s reach. Guards and protective devices should achieve their safety function with minimal downtime and the least reduction in productivity. The main purpose with this project is to draw up protection device proposals for roller straightening units and based on drawings implement one suitable concept.
487

GeoSherik : An interactive mapping portal for schools in Bhutan (Prototype)

Penjor, Tshering January 2007 (has links)
Rapid development in Information technology are creating learning and teaching more interactive and efficient through innovative technology. The potential use of Internet and computer technology in the education has been widely recognized globally. Bhutan although with its limited ICT (Information and communication Technology) infrastructure shares the same view and wishes to yield the benefits of the technology into their education curriculum. The aim of the project is to demonstrate the capability of web technology in developing web portal with low-end technology to teach school children the basic skills of mapping and GIS. The basic skills on map reading and application of simple query related to GIS forms the core component of this application which will help children learn map reading. The application is created with low-end technology and is simple and easy to use. The project is not a complete portal and will not cover all aspect of mapping but will supplement the conventional classroom curriculum and can be developed into a full cross-curriculum portal with further contribution.
488

Konstruktion av pallmagasin

Brantlid, Carl January 2006 (has links)
Detta examensarbete har utförts åt företaget MH Modules AB. Företaget arbetar med att utveckla, tillverka och sälja materialhanteringsmoduler till maskin- och systembyggare utan egen produktidentitet. En materialhanteringsmodul kan bestå av rullbanor, bandtransportörer, kedjetransportörer, hissar, vinkelväxlar och pallmagasin. Syftet med arbetet var att utveckla ett nytt pallmagasin där pallar ska kunna lastas på och av på ett enkelt och driftsäkert sätt med hjälp av en handtruck. Målsättningen var att konstruera en lyftanordning med styrenhet. Efter att lyftanordningen och styrenheten var klara gjordes det en lämplig ram som uppfyller säkerhetskraven. Arbetet inleddes med att se över konkurrenternas och MH Modules egna framtagna pallmagasinen. Fortsättningsvis riktades arbetet på att vara idérik samt att hålla idémöten där förslag och krav från företaget togs fram för konstruktionen. Pallmagasinet ska klara av att lyfta 500 kilogram eller 14 pallar och det ska även kunna vara uppgraderbart till 1000 kilogram eller 28 pallar. Kostnaden för pallmagasinet får inte överstiga 35 000 kronor Tre konstruktionslösningar på lyftanordningen och styrenheten togs fram för utredning. Efter samråd med MH Modules konstruktörer valdes en av lösningarna. Lyftenheten utformades med två pneumatiska kolvar. Dessa kolvar lyfter en anordnig med styrskenor och pendelarmar. Pendelarmarna har lyftklackar längst ner. Dessa klackar lyfter pallarna i pallmagasinet. Hållfasthetsberäkningar med finita element metoden gjordes på pendelarmarna samt lyftbalken. Avslutningsvis konstruerades en ram som ska uppfylla person- och säkerhetskrav. Ramen består av tre delar, den högra och den vänstra ramen samt en gavel. Ramen till lyftenheten är en enkel konstruktion som enkelt ska kunna tillverkas i verkstaden. Efter att pallmagasinet var färdigkonstruerat gjordes det tillverkningsritningar för beredning av tillverkning.
489

Tippning av detaljer till ungdjursboxar

Pettersson, Johan January 2007 (has links)
Som en del av SMEKAB AB:s tillverkning åt DeLaval Sales AB ingår tillverkning av frontar och mellanväggar till ungdjursboxar. Efter det att produkterna varmförzinkats placeras de stående i grupper om tio i så kallade häckar. Där sker en mindre montering innan de färdiga detaljerna placeras en i taget på en pall. Denna operation anser SMEKAB tar för lång tid, man vill därför tillverka en tippanordning som gör det möjligt att banda ihop alla tio för att sedan lägga dem på en pall. Arbetes huvudsakliga uppgift är att ta fram produktionsunderlag för en sådan anordning. I produktionsunderlaget skall ritningar, säkerhetsföreskrifter, hållfasthetsberäkningar samt en grov ekonomisk kalkyl presenteras. Efter det att uppgiften diskuterats med SMEKAB plockades en kravspecifikation fram och med denna som stöd skissades ett antal idéer fram. Tillsammans med SMEKAB valdes en konstruktions bestående av ett bord som i stående läge kan liknas med ett L, bordet följer med hjälp av urskålande hjul så kallade V-hjul [10], en rörkonstruktion tills det att detaljen tippats 90 grader. Innan hållfasthetsberäkningarna utfördes genomfördes en undersökning om hur tippningsprocessen påverkas av hjulens placering. Då SMEKAB inte kan säga hur deras produkter ser ut i framtiden önskas en maskin som kan tippa detaljer oberoende var detaljens tyngdpunkt är placerad. Efter att diskuterat undersökningsresultatet beslutades att den slutgiltiga konstruktionen skulle innehålla två hjulpar placerade 300 mm på var sida om tyngdpunkten. Efter detta beslut dimensionerades konstruktionen och en kostnadskalkyl beräknades. I samråd med SMEKAB bestämdes vilka säkerhetsregler som gäller för konstruktionen. Den slutgiltiga konstruktionen består av ett som tidigare beskrivet L-format bord som glider på en rörkonstruktion tills det är tippat 90 grader. För att bordet skall följa rörkonstruktionen används en hjulupphängning bestående av V-hjul [10]. För att klara rörets krökning är det 20 mm mellanrum mellan hjulen. För att tippa en detalj placeras en pall stående på bordet, sedan placeras produkten framför pallen. När trucken sedan lyfter bordet underifrån glider det längs rörkonstruktionen tills den tippats 90 grader. Efter genom fört arbete överlämnas produktionsunderlag bestående av ritningar, förslag på säkerhetsregler samt kostnadsförslag över till SMEKAB. Därmed uppfylls de mål och syfte som sattes i börja av projektet. Som förslag till fortsatt arbete bör SMEKAB göra en djupare undersökning angående om konstruktionen skall vara flyttbar eller inte. Om tippanordningen skall vara flyttbar måste SMEKAB konstruera en lösning som gör att hela anordningen lyfter från marken under tippningsprocessen.
490

Maintenance Program development and the definition of the maintenance program process

Asp, Björn January 2008 (has links)
Under the economical pressure most airlines currently experiences, there is no margin to do too much or not enough of maintenance. Customers’ demands high regularity, punctuality and safety. It is all about finding a balance in the maintenance program to be able to control costs and to deliver what the customers expect. To actively work with the maintenance program and to continuously evaluate the same is of these reasons utterly important. This report considers three methods and defines a process for working with optimization of maintenance intervals. The study was carried out at Malmö Aviation, 2006-2007, the purpose was to establish a procedure for working with evaluation of Maintenance Program tasks based on conducted maintenance. / Under den starka ekonomiska press de flesta flygbolag befinner sig idag finns det inte marginaler att utföra för mycket eller för lite underhåll. Kunderna kräver hög regularitet, punktlighet och säkerhet. Det gäller att hitta balans i underhållsprogrammet för att kunna kontrollera kostnaderna och leverera det kunderna förväntar sig. Att aktivt arbeta med underhållsprogrammet och att kontinuerligt utvärdera detsamma är av dessa anledningar otroligt viktigt. Detta arbete tar upp tre arbetssätt och definierar en process för arbete med optimering av underhålls intervall. Studien utfördes på Malmö Aviation, 2006-2007, syftet var att ta fram en procedur för utvärdering av underhållsprogrammets uppgifter baserat på utfört underhåll.

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