In this thesis, we develops a Pocket PC-based 3D object design system using implicit functions, which allows users to design and view 3D objects easily at anytime and anywhere. With the growing wireless techniques, Pocket PC can easily connect to the Internet via WLAN, GPRS, WCDMA, etc. The problems of insufficient computing power caused by the limited hardware on Pocket PCs can be solved by the client-server model, which performs complex computation on the workstation, and transmit polygon mesh data to the Pocket PC. Via the proposed system, one can design and visualize his any innovative ideas instantly wherever he is.

The thesis examines the ability to have synchronized playout of audio from multiple devices. The paths between the source of this audio and the output devices may be different. Our objective is to provide a generic low-cost solution, without the use of special hardware. The context of this work is internet telephony, but the work is also applicable to other settings. In internet telephony this synchronization not only contributes to the natural flow of conversation, but also maintains the spatial effect of the incoming audio streams, as well as the location awareness of the peers. We envisioned users of handheld devices might collectively utilize their personal devices to enable a shared spatial audio environment. In the simplest case two users each with monophonic terminals could provide stereo. Hence, the second part of this study addresses the practical issue of how such synchronization could be utilized in a internet telephony client to provide such multidevice playout. We utilized minisip, as an open-source Session Initiation Protocol (SIP) client supporting security, as the basic client. To realize the vision, we ported minisip to a Pocket PC environment. In the second part of this thesis we examine the process of porting preexisting code to such a new architecture, as well as how to map an existing human-computer interface to such a handheld device. The thesis shows that synchronization is possible and explores some of the implementation’s limitations. A clear result is the need to combine the results of several theses into the common trunk code - so as to combine the earlier RTCP work with this synchronization work and to provide the a human-computer interface which is suitable for many different handheld devices, ranging from Pocket PCs to SmartPhones. / Rapporten visar på möjligheten att synkronisera ljuduppspelning på multipla ljudenheter. Vägarna från ljudkllan till de olika högtalarna (utenheterna) kan skilja sig. Vårt mål är att tillhandahålla en generell lösning till en lågt kostnad, utan att behöva använda specialhårdvara. Området för detta arbete är internettelefoni, men arbetet är även tillämpbart inom andra områden. I fallet med internettelefoni så bidrar ljudsynkroniseringen inte enbart till det naturliga konversationsflödet, utan även till de rumsrelaterade aspekterna av de inkommande ljudströmmarna och samtalsparternas medvetenhet om sina geografiska positioner. Vi förutser att användare av mobila terminaler kan komma att använda sina terminaler tillsammans för att möjliggöra en gemensam ljudmiljö. I sitt enklaste utförande kan två monoenheter tillsammans skapa en ljudmiljö för stereo-ljud. Därför adresserar den andra delen av studien hur denna typ av ljudsynkronisering kan användas inom IP-telefoni för att möjliggöra synkroniserad uppspelning på flera enheter. Vi använde minisip, en klient för SIP byggd på öppen källkod och med säkerhetsstöd, som en grundläggande terminal. För att realisera vår vision så portade vi minisip till Pocket PC-miljön. I den andra delen av den här rapporten undersöker vi även processen för att portera existerande kod till en sådan arktitektur, och hur man överför existerande användargränssnitt till en handhållen terminal. Denna rapport visar att synkronisering är möjlig men visar samtidigt på en del av begränsningarna i implementationen. Ett tydligt resultat är behovet av att kombinera tidigare rapporters resultat – för att kombinera tidigare arbete inom RTCP med detta arbete inom synkronisering och för att tillhandahålla ett användargränssnitt lämpat för många olika handhållna terminaler, från Pocket PC-baserade till SmartPhone-baserade system.

This thesis describes a performance measurement tool that allows a user to measure network performance using a handheld device. The measurement tool consists of a client program that runs on a Microsoft Pocket PC device and a server program that runs on a regular Microsoft Windows computer. Both programs are Windows applications implemented in C/C++ using the Microsoft Embedded Visual Tool and Microsoft Visual Studio. The use of a Pocket PC device provides mobility to users, which can save time and energy when performing experiments. The thesis describes the design of the performance measurement application, implementation issues, and tests conducted using the tool. / Master of Science

The process of tax decentralization and the growing participation of municipal governments in the set of tax resources of Brazil, amplify its expansion in the management of public services dedicated to the population, creating conflicts in the structure of this level of government. The expansion and the improvement of the public services dedicated to the population require a larger structure and that is the reason that it requires more expenditure to municipalities. Although the municipalities public revenue receives an increase of financial resources, it has been demonstrated insufficient in order to afford these expansions. Between the tributes that the municipalities adopt, there are the IPTU and also ISSQN. These taxes could represent a stimulus on the tributes, making it sufficient to support the public expenditure. The taxes belong to the federal constitution, it is governed by a complementary municipality s law and it has as first generator of tributes, the inclusion in owns register of all buildings, residential and commercial. The presented work demonstrates the possibilities of using mobile computing in the simplification of the collection and data processing, detailing two systems in the area of urban management that use technology GPS with connection wireless Bluetooth and also it allows the update and the insertion of new information in the data base. / O processo de descentralização fiscal e a crescente participação dos governos municipais no conjunto dos recursos tributários do Brasil ampliaram sua expansão na gestão dos serviços públicos de atendimento à população, criando conflitos na estrutura desse nível de governo. A ampliação e melhoria dos serviços públicos prestados à população requerem uma estrutura maior, e geram por isso mais despesas para o município. Dessa forma, embora a receita pública municipal tenha recebido um incremento de recursos financeiros, tem se mostrado insuficiente para bancar essas expansões. Assim, entre os tributos de arrecadação própria que os municípios possuem, estão os Impostos IPTU e ISSQN. Esses impostos podem representar um estímulo nas arrecadações, suficientes para atender às despesas públicas, estão previstos na constituição federal. Ambos são regidos por lei complementar municipal, e possuem como primeiro fato gerador de arrecadação a inscrição em cadastro próprio de todos os imóveis residenciais e comerciais existentes. Este trabalho mostra a possibilidade de se utilizarem sistemas computacionais móveis na simplificação de coleta e processamento de dados à campo, detalhando dois sistemas na área de gestão urbana, que utilizam tecnologia GPS com conexão sem fio Bluetooth, e permitem a atualização e inserção de novas informações no banco de dados.

WM-data tillhandahåller en lösning för mobil arbetsorderhantering. Lösningen innehåller planeringsverktyg med ärenden, personal och karta och möjlighet att leverera arbetsorder till fältpersonal. Den innehåller dessutom handhållna mobilenheter, vilka fältpersonalen använder för att ta emot aktuella arbetsorder.Vissa kunder önskar ytterligare en modul i denna mobila lösning. Den nya modulen skall användas för att kontinuerligt rapportera in genomförda åtgärder i snöröjningssammanhang.Detta examensarbete går ut på att utveckla den här modulen för att registrera snöröjning respektive sandning. Applikationen exekveras på en PDA, en så kallad Pocket PC med Windows Mobile 5.0. Anledningen till att just Windows Mobile 5.0 skall användas är att detta operativsystem har inbyggt stöd för GPS-positionering. Ett önskemål av WM-data var att detta inbyggda stöd skulle undersökas, rapporteras och användas i applikationen.Resultatet blev en applikation där man via en Pocket PC kontinuerligt sparar undan fordons GPS-position, arbetsåtgärd samt tidpunkterna när GPS-positionerna togs. Denna information är sedan anpassad för att kunna skickas vidare via GPRS till en befintlig databasserver under vissa tidsintervaller.Applikationen utvecklades med hjälp av programmeringsspråket C Sharp (C#) i Visual Studio 2005.

Οι ανάγκες της εποχής μας για πληροφορία και επικοινωνία ανά πάσα στιγμή και σε οποιοδήποτε μέρος έχουν οδηγήσει στην ανάπτυξη ολοένα και μικρότερων, αλλά παράλληλα και ισχυρότερων, φορητών συσκευών. Η τελευταία λέξη της τεχνολογίας αφορά υπολογιστές τσέπης (Pocket PC) σε μέγεθος κινητού τηλεφώνου, οι οποίοι φέρουν ισχυρό υπολογιστικό κύκλωμα, πολλαπλές δυνατότητες δικτύωσης/επικοινωνίας και ένα λειτουργικό σύστημα (Windows CE/Windows Mobile) που επιτρέπει την ανάπτυξη πληθώρας εφαρμογών. Ενδεικτικά αναφέρονται μερικές χρήσεις των Pocket PC ως κινητά τηλέφωνα, ως συσκευές αναπαραγωγής πολυμεσικών αρχείων (ήχου/εικόνας), ως προσωπικές ατζέντες, ως συσκευές πλοήγησης κ.ά. Στην διπλωματική εργασία θα περιγράψουμε λεπτομερώς το λειτουργικό σύστημα, τα τεχνικά χαρακτηριστικά των Pocket PC και τις δυνατότητες τους. Επίσης θα παρουσιάσουμε τα περιβάλλοντα υλοποίησης εφαρμογών για τις πλατφόρμες αυτές. Μια άλλη τεχνολογία που και αυτή έχει εισβάλλει πρόσφατα στη ζωή μας είναι το Σύστημα Εντοπισμού Θέσης (GPS - Global Positiong System). Το GPS χρησιμοποιεί δορυφόρους που βρίσκονται σε τροχιά γύρω από τη Γη για την εύρεση του στίγματος και για την ακριβή μέτρηση χρόνου. Αν και αναπτύχθηκε για στρατιωτικούς σκοπούς, πλέον χρησιμοποιείται κατά κόρον από απλούς πολίτες. Οι εφαρμογές του GPS ποικίλουν από την πλοήγηση μέσα σε μια πόλη μέχρι την ορειβασία και από το κτηματολόγιο μέχρι την ωκεανογραφία. Η τεχνολογία στις μέρες μας επιτρέπει την κατασκευή GPS δεκτών πολύ μικρού μεγέθους και με δυνατότητα επικοινωνίας με διάφορα είδη υπολογιστών, συμπεριλαμβανομένων και των Pocket PC. Με το κατάλληλο πρόγραμμα στο Pocket PC έχουμε τη μοναδική δυνατότητα να επεξεργαζόμαστε εν κινήσει τα χωρικά δεδομένα του δέκτη. Στην εργασία θα περιγράψουμε αρχικά την τεχνολογία του GPS και στην συνέχεια το πρωτόκολλο εξαγωγής δεδομένων από το GPS δέκτη. Στην τρίτη φάση της εργασίας καλούμαστε στην έμπρακτη υλοποίηση του συνδυασμού των 2 τεχνολογιών. Πιο συγκεκριμένα θα επιχειρήσουμε να υλοποιήσουμε μια Windows Mobile εφαρμογή που θα τρέχει σε ένα Pocket PC και θα χρησιμοποιεί τα δεδομένα από το GPS δέκτη, καθώς και άλλη σχετική πληροφορία, για να καταγράψει την σήμανση του οδικού δικτύου. / In our modern society the continuous need for information and communication has led to the development of even smaller, but at the same time and more powerful, mobile devices. State of the art technology introduces pocket computers (Pocket PC) with size similar to a cell-phone, including powerful processing circuits, multiple capabilities of networking and an operating system (Windows CE/Mobile) capable for developing a broad range of applications. Pocket PCs can be used as sophisticated cell-phones, multimedia reproduction devices (picture, sound and video), personal organizers, city navigators and more. In this master thesis, we will describe in detail this operating system, the technical characteristics of Pocket PCs and their capabilities. We will also present the software development kits (SDKs) available for these devices. Another achievement of technology which has invaded recently in our lives is the Global Positioning System (GPS). GPS uses satellites orbiting the earth, to find our current location on Earth and for precise time calculation. At start it had only military use, but nowadays it is used extensively by citizens for civilian purposes. The applications of GPS vary from navigating through a city to oceanography. Modern technology is able to manufacture small GPS receivers with the capability to connect to a number of devices, including Pocket PCs. With the appropriate program running on the Pocket PC, we have the unique possibility to process territorial data on the go. In our thesis we will describe the GPS system and the protocol responsible for exporting data from a GPS receiver.

Didelis energijos suvartojimas yra labai svarbi detalė sistemoms, naudojančioms baterijas: nešiojami kompiuteriai, delninukai, mobilieji telefonai ir t.t. Pradėjus naudoti objektiškai orientuotas sistemas, buvo susirūpinta energijos taupymu. Todėl išsiaiškinus, kokią įtaką daro objektiškai orientuotos sistemos baterijos gyvavimo ciklui, galima būtų padėti programuotojams kurti tokias programas, kurios vartoja mažiau energijos. Darbe sukuriau programą, kuri sodina bateriją. Programoje naudojamos išretintos matricos. Pasinaudojus išretintų matricų saugojimo pagal eilutes metodu, kuris leidžia sumažinti matricos formatą, išmetant nulinius elementus, galime stebėti, kaip keičiasi sistemos resursų sunaudojimas, keičiant pradinėje matricoje nulinių elementų skaičių. Atlikę daugybą, galime įvertitni, kiek energijos suvartojo optimizuotas programos kodas ir neoptimizuotas. Atlikus eksperimentą, rezultatai parodė, jog optimizuotas kodas žymiai mažiau nusodina bateriją nei neoptimizuotas. To pasekoje galime daryti išvada, kad sistemos, kuriose yra optimizuotos programos, veiks ilgiau nei sistemos su neoptimizuotu kodu. / Low power consumption is a major constraint for battery-powered system like computer notebook or pocket PC, mobile phone. In the past, specialists usually designed both specific optimized equipments and codes to relief this concern. Doing like this could work for quite a long time, however, in this era, there is another significant restraint, the time to market. To be able to serve along the power constraint while can launch products in shorter production period, objectoriented programming (OOP) has stepped in to this field. In work we create program, whose multiply sparse matrix. Multiplication are two types: one we use standart matrix multiplication, other use compresed matrix storage by rows multiplication. When execute program, we can track, how battery power are consumpt. When we use compresed matrix storage by rows multiplication, we eliminate zero elements and multiplication execute faster, then standart matrix multiplication. So baterry power comsumption are lower. If your system are very important battery life time, then you must use optimized programm code. Optimized programm code use less battery power, then not optimized. Then your system can work much longer.

In most of the studies, face to face interviews are required with individuals for data collection and hence to apply questionnaires. There are two methods for applying the questionnaire / the paper-based and the electronic method. The paper-based method takes time and is of a high cost to the researchers. Because of writing/reading based errors, this method may cause inaccuracy in collected data. On the contrary, conducting questionnaires in electronic environment procures savings in cost and time, improves data accuracy, gives faster results, and increases efficiency. However, in this method some problems may arise in surveys conducted in urban areas, i.e. problems related to communication and network infrastructure. Nevertheless, advances in Information Technologies provide mobile data collection and computing, and hence they have become a significant place in every part of our life. Many researchers have begun to prefer using these developing technologies in their studies since using mobile devices in conducting health surveys is more useful and economical than the paper-based questionnaires. In this thesis, we have developed a mobile device-based questionnaire, which is an adaptation of the one used by the National Cancer Institute of USA in paper-based form. In other words, in this work the &ldquo / Health Habits and History Questionnaire&rdquo / has been adopted to the pocket PCs. It is planned to be used for an ongoing epidemiological study in &Ccedil / ukurova region. We hope that this study will be an example for the similar studies in the future.

With the rapid development of technology for context awareness, pervasive computing is releasing people from their traditional desktops. Since mobile devices feature portability and are (nearly) always connected, people tend to carry them wherever they go. Hence, devices such as cellular phones and Pocket PCs are the most suitable platforms for developing context aware applications which users will utilize in their daily life. For these context aware systems, using this context information not only improves the user experience of ubiquitous computing, but also lets the system know who you are or what you have. More importantly, the device can know where you are and predict what you might like to do, thus simplifying many of the user’s interactions with devices and other people around them. This thesis project involves the design, implementation and evaluation of a context aware application, based upon a Pocket PC, that can remind the user of tasks when the user approaches the relevant location for this task. The application interacts with a context aware infrastructure by using the SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE) protocol, receives context information for the user described using XML. A number of new tags, based upon a new XML schema, have been introduced for this task. This context aware mechanism enables the user to receive any form of information updated by the context server. In this thesis, updates to this information are driven by changes in the user’s location. Additionally, by using the existing calendar application on the Pocket PC, the user can experience location based reminders without learning how to use a new user interface. / Med den snabba utvecklingen av kontextmedvetna teknologier befriar den genomträngande datoriseringen människor från deras traditionella datorer. Eftersom mobila apparater medför bärbarhet och är (nästan) alltid uppkopplade, tenderar människor att bära dem överallt. Följaktligen blir apparater som mobiltelefoner och Pocket-PC de mest passande plattformarna för utvecklandet avkontextmedvetna applikationer för daglig användning. För dessa kontextmedvetna system kommer inte bara användandet av kontexinformation förbättra användarens upplevelse av överallt förekommande datorisering, utan låter även systemet veta vem du är eller vad du har. ännu viktigare är att apparaten kan veta var du befinner dig samt förutsäga vad du skulle kunna vilja göra, och därigenom förenkla mycket av användarens interaktion med andra apparater och människor i omgivningen. Detta examensarbetsprojekt involverar designen, implementationen och evalueringen av en kontextmedvetet applikation, baserad på en Pocket-PC, som kan påminna användaren om uppgifter när användaren närmar sig det relevanta området för dessa uppgifter. Applikationen interagerar med en kontextmedveten infrastruktur genom användandet av protokollet “SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE)”, mottas kontextinformation för användaren beskriven i XML-format. Ett antal nya taggar, baserade på en ny XML-schema, har introducerats för denna uppgift. Denna kontextmedvetna mekanism gör det möjligt för användaren att ta emot alla typer av uppdaterad information från kontextservern. I denna avhandling uppdateras denna information genom att användaren förflyttar sig. Dessutom kan användaren, genom att använda den befintliga kalenderapplikationen i Pocket-PC:n, få lägesbaserade påminnelser skickade till sig utan att behöva lära sig använda ännu ett interface.

This article provides an evaluation and overview of the Personal Digital Assistant (PDA) version of the evidence-based medicine database, InfoRetriever. Both the Pocket PC and Palm OS version are evaluated in this article. Topics covered are the access and installation of InfoRetriever for both PDA operating systems, the design and interface of InfoRetriever, the ease of access of the database contents, and its importance as a tool for point-of-care medicine.