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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.
371

A Domain-Specific Conceptual Query System

Shen, Xiuyun 02 August 2007 (has links)
This thesis presents the architecture and implementation of a query system resulted from a domain-specific conceptual data modeling and querying methodology. The query system is built for a high level conceptual query language that supports dynamically user-defined domain-specific functions and application-specific functions. It is DBMS-independent and can be translated to SQL and OQL through a normal form. Currently, it has been implemented in neuroscience domain and can be applied to any other domain.
372

Evaluation of Software Defined Radio platform with respect to implementation of 802.15.4 Zigbee

Dabcevic, Kresimir January 2011 (has links)
With the development of powerful computational resources such as Digital Signal Processors and Field Programmable Gate Arrays, It has become possible to utilize many radio functions via software. This is the main concept of an up-and-coming technology of Software Defined Radio. In the Thesis, a number of platforms for implementation of Software Defined Radio has been evaluated. Platform that proved to be most suitable for the project was Ettus’ USRP N210. Using the platform, implementation of 802.15.4 Zigbee’s physical layer was done, where experiments whose outputs can later be used to compare performance with respect to "hardware radios" were performed. / Med utvecklingen av enheter med kraftfulla beräkningsegenskaper som “Digital Signal Processors” och “Field Programmable Gate Arrays” har det blivit möjligt att implementera flera radiofunktioner i mjukvara. Det är huvudkonceptet i den uppåtgående teknologin mjukvaru definierad radio.I det här examensarbetet har ett flertal plattformar för mjukvaru definierad radioutvärderats. Plattformen som visade sig vara mest lämplig för projektet var Ettus USRP N210. En implementation av IEEE 802.15.4 Zigbees fysiska lager har realiserats till plattformen. Experiment, vars utdata senare kan användas för att jämföra prestanda mellan mjukvaru definierad radio och hårdvaru baserad radio, har även utförts. / TESLA - Time-critical and Safe wireLess Automation communication / GAUSS - Guaranteed Automation communication Under Severe disturbanceS
373

A model for the examination of gender within domestic spaces on the northern plains

Forner, Cheryl Irene 14 April 2008 (has links)
The prehistory of the North American Plains is an exciting and dynamic area of research within the discipline of archaeology. However, for the most part, the descriptions that archaeologists have assigned to the people who created the archaeological record in this region are either gender neutral or gendered male by default. In recent years Plains archaeologists have begun to explore how, where, and why gender representation can be found on the Plains.<p> This thesis seeks to further Plains gender research. Specifically, task differentiation by gender for the Blackfoot, a Plains contact period culture' group, is examined and detailed in this study. The data compiled are used to set up a task differentiation model for the Blackfoot. How the Blackfoot conceptually structured the interior space of a tipi is also examined. The combined data are used to establish a model for the gendered distribution of space within a tipi. Once the model for the gendered distribution of space is established, it is tested against ten completely excavated tipi rings. The results of the spatial analysis indicate that gender can be seen archaeologically, within the features used in this study. Additionally, the findings of the analysis indicate that the best artifact classes to use when examining the gendered distribution of space are ceramics, lithics, and faunal material. Finally, recommendations for further testing of the model are made in order to confirm that the model can be used to examine gendered spaces at Plains tipi rings.
374

Three essays on the mutual fund marketplace the use of distribution channels and market segmentation /

Anderson, Nancy Lottridge. January 2008 (has links)
Thesis (Ph.D.)--Mississippi State University. Department of Finance and Economics. / Title from title screen. Includes bibliographical references.
375

The Effects of Item Complexity and the Method Used to Present a Complex Item on the Face of a Financial Statement on Nonprofessional Investors` Judgments

Ragland, Linda Gale 01 January 2011 (has links)
My study is motivated by standard setters interest in better understanding (and the gap in research as to) the effects of item complexity and disaggregation across a financial statement on users' decision processes (Bonner 2008; Glaum 2009; FASB 2010b). I examine whether complexity of an item and the method used to present the item on a financial statement influences nonprofessional investors' judgments. Specifically, I examine two issues raised concerning IAS 19 Employee Benefits. The first is to examine whether there are differences in nonprofessional investors' judgments when individual components of a complex item (defined pension cost) are disaggregated across a financial statement (the statement of comprehensive income) versus when individual components of a complex item are aggregated on the face of the same statement. Differences may arise since disaggregation across a statement provides information about how an item relates to different economic events and this information could help nonprofessional investors to better interpret and use the information in judgments. A second objective is to examine whether increasing the complexity of an already complex item affects the usefulness of information. I find that nonprofessional investors weigh higher levels of item complexity in certain judgments. Additionally, I find that when a complex item (defined pension cost) is disaggregated across a financial statement (the statement of comprehensive income) nonprofessional investors are able to acquire more information about the item and are able to more accurately understand the function of the item. This, in turn, helps the nonprofessional investors decide whether the information is useful in certain judgments.
376

Rapid reading for passive wireless coupled sensors

Trivedi, Tanuj Kiranbhai 30 October 2012 (has links)
The objective of this thesis is to design and implement a rapid, reconfigurable and portable reader for wirelessly interrogating inductively coupled passive sensors. While the current method of impedance analyzer is sensitive and an accurate, the instruments used are bulky and slow, substantially hampering in-field testing and interrogation of sensors. Current methods cannot provide a quantifiable measure on minimum necessary read-speeds and instrument accuracy desirable for rapid sensing applications. This work summarizes the design and hardware implementation of two reader methods that address the aforementioned requirements. Both reader methods are based on a reflectometer approach: Swept-frequency Reflectometer Reader and Switched-frequency Interrogation Technique (SWIFT). The first method is a much faster alternative to in-lab and in-field testing for structural health monitoring, and is intended as an immediate replacement for the impedance analyzer method. Switched-frequency Interrogation is specifically designed to satisfy the need for rapid and accurate reading, potentially for in-motion sensing applications. This method provides a way of empirically relating minimum necessary read-time required for desired read-ranges. It also facilitates quantification of uncertainty in measurements, which is very critical in determining instrument accuracy in-field. The system design and implementation of both methods are described in detail and experimental results are presented to benchmark the performance of the readers. Issues of instrument reliability and practical limitations are also discussed, with potential solutions. Both methods are intended as universal techniques for wirelessly interrogating coupled passive sensors, not limited to their current form of implementation. / text
377

Combining musical identities through composition and improvisation

Perks, Richard January 2013 (has links)
This research project aims to: - Examine how my musical identity as Music-maker can be fused with those of contributing improvising musicians, throughout the collaborative process. - Form creative methodologies/strategies to sufficiently accommodate the improvisatory approaches of others around my own work. - Develop appropriate communication methods, including original notational systems; and explore ways in which technology can be harnessed, to help fulfil the above objectives. This research intends to explore the extent to which improvisation may be incorporated into compositions, by means of practical experiment and investigation. The written commentary will accompany a portfolio of audio recordings and scores. Key works demonstrating various approaches and techniques employed will be examined in detail. An appendix disc of supplementary audio recordings and videos will also be provided to show piecedevelopment and the evolution of my music-making practice. My point of origin straddles that of a professional guitarist experienced in an array of improvised music(s), including: rock, jazz, fusion and contemporary improvisation, and that of a composer interested in collaborative projects which take advantage of the eclectic experience and skill sets of the musicians taking part.
378

Konsekvenser vid slopandet av korridormetoden : Engångseffekten på eget kapital / Consequences of abolishing the corridor method : One time effect on equity

Jarnbo, Cecilia, Ljungberg, Sophie January 2015 (has links)
Hur företag påverkades av slopandet av korridormetoden varierade från företag till företag. Dock hade alla undersökta företag som tillämpat korridormetoden räkenskapsår 2012, ackumelerade underskott. Den totala genomsnittliga effekten på eget kapial blev en minskning med -4,49 procent. En sjättedel av företagen i undersökningen vidtog någon åtgärd för att förebygga en negativ effekt på eget kapital. Den främsta åtgärd som dessa företag hade vidtagit, var att de successivt hade övergått till avgiftsbestämda pensionsplaner under de senaste åren och stängt de förmånsbestämda pensionsplanerna, vilket har förebyggt en negativ effekt. En ytterligare anledning till varför effekten inte blev så stor som befarades i media, kan bero på att en del företag valde att tillämpa den reviderade IAS 19 i förtid, det vill säga under tidigare räkenskapsår. / How the corporates equity was affected due to the abolishment of the corridor method varies from corporate to corporate. However, all investigated corporates in the essay which practiced the corridor method the fiscal year 2012 had an accumulated deficit. The total average effect on equity shows a decrease by -4,49 percent. One sixth of the corporates reviewed performed preventive actions to mitigate a negative effect on equity. One foremost action these corporates performed was to move from defined benefit plans to contribution plans the last years and close the defined benefit plans. One additional cause why the effect on equity was not as big as the media predicted, could be because some corporates choose to practice the revised IAS 19 in their previous fiscal years.
379

Aktuariella antaganden : En studie om svenska koncerners val

Atto Demirdag, Maria, Södergren Öglü, Filiz January 2014 (has links)
Purpose: The purpose of this paper is to investigate whether there is a correlation between the actuarial assumptions, of listed groups in Large Cap on the Nasdaq Stockholm, equity ratio and their pensionplans funding status. Method: The study is based on a quantitative research method, where the analysis of annual reports takes place. The quantitative research method has enabled the paper to perform related analyzes and comparisons of means between groups, for listed companies equity ratio and pension obligation, and the relation to its actuarial assumptions. Correlation measurements are made using a non-parametric method, Spearman's rho, then further tested using one-sided hypotheses t-test. Theory: The backbone of the thesis is presented using two theories, earnings management and the principal-agent theory. These theories are intertwined with the previous researches, which also dealt with the essay topic of earnings management in previous years and in other countries. Empirical: Correlation analyzes between the studied actuarial assumptions and corporate groups solidity and pension financial status is presentedusing tables and charts. These are further analyzed using hypothesis tests and scatterplots. Conclusion: All tests resulted in very weak correlation between the different variables and can there for not be classified as significant. The conclusion that companies, listed in Large Cap on Nasdaq Stockholm, tend to make its actuarial assumptions in order to try to achieve a certain equity ratio, or to try to get their unfunded pension plans seem more funded than they actually are, is not possible to make.
380

A Study of Partitioning and Parallel UDF Execution with the SAP HANA Database

Große, Philipp, May, Norman, Lehner, Wolfgang 08 July 2014 (has links) (PDF)
Large-scale data analysis relies on custom code both for preparing the data for analysis as well as for the core analysis algorithms. The map-reduce framework offers a simple model to parallelize custom code, but it does not integrate well with relational databases. Likewise, the literature on optimizing queries in relational databases has largely ignored user-defined functions (UDFs). In this paper, we discuss annotations for user-defined functions that facilitate optimizations that both consider relational operators and UDFs. We believe this to be the superior approach compared to just linking map-reduce evaluation to a relational database because it enables a broader range of optimizations. In this paper we focus on optimizations that enable the parallel execution of relational operators and UDFs for a number of typical patterns. A study on real-world data investigates the opportunities for parallelization of complex data flows containing both relational operators and UDFs.

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