Dissertations / Theses: 'Scan'

1

Shapko, D. "Retinal scan." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/26018.

APA, Harvard, Vancouver, ISO, and other styles

2

Pocock, Christopher. "3D Scan Campaign Classification with Representative Training Scan Selection." Master's thesis, Faculty of Science, 2019. https://hdl.handle.net/11427/31791.

Full text

Abstract:

Point cloud classification has been shown to effectively classify points in 3D scans, and can accelerate manual tasks like the removal of unwanted points from cultural heritage scans. However, a classifier’s performance depends on which classifier and feature set is used, and choosing these is difficult since previous approaches may not generalise to new domains. Furthermore, when choosing training scans for campaign-based classification, it is important to identify a descriptive set of scans that represent the rest of the campaign. However, this task is increasingly onerous for large and diverse campaigns, and randomly selecting scans does not guarantee a descriptive training set. To address these challenges, a framework including three classifiers (Random Forest (RF), Support Vector Machine (SVM) and Multi-Layer Perceptron (MLP)) and various point features and feature selection methods was developed. The framework also includes a proposed automatic representative scan selection method, which uses segmentation and clustering to identify balanced, similar or distinct training scans. The framework was evaluated on four labelled datasets, including two cultural heritage campaigns, to compare the speed and accuracy of the implemented classifiers and feature sets, and to determine if the proposed selection method identifies scans that yield a more accurate classifier than random selection. It was found that the RF, paired with a complete multi-scale feature set including covariance, geometric and height-based features, consistently achieved the highest overall accuracy on the four datasets. However, the other classifiers and reduced sets of selected features achieved similar accuracy and, in some cases, greatly reduced training and prediction times. It was also found that the proposed training scan selection method can, on particularly diverse campaigns, yield a more accurate classifier than random selection. However, for homogeneous campaigns where variations to the training set have limited impact, the method is less applicable. Furthermore, it is dependent on segmentation and clustering output, which require campaign-specific parameter tuning and may be imprecise.

APA, Harvard, Vancouver, ISO, and other styles

3

Chang, Ting Li. "The IR missile (spin-scan and con-scan seekers) countermeasures." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/30834.

Full text

Abstract:

In the combat scenario where the infrared missile is an almost continuous threat during the operation, fighter aircraft are currently quite susceptible to being killed in attacks by infrared missiles. Theoretical analysis applied to an encounter simulation seems to indicate that it is possible to use the infrared Active Jammer and the expendable decoy (flare) to defeat the infrared missile (spin-scan and con-scan seekers). The theoretical analysis of a simplified case of a spin-scan and con-scan reticle with amplitude modulation, frequency modulation and phase modulation leads to expressions for the targets' positions, as seen by the missile seeker, under no-jamming condition. The signal waveforms consist of target radiation power failing on the reticle and the reticle modulation function. We apply signal processing techniques to the modulated signal to determine the tracking error rate under no-jamming, active jamming and flare jamming different conditions, and by comparing with the unjammed tracking error rate, to determine the differences and effectiveness of jamming. The analytical result is simulated by means of a simulation program (MATLAB), which evaluates the change in the missile LOS (line of sight ) rotation rate and the impact on the missile guidance operation. The analysis indicated successful jamming in the different jamming source situations. Following the jamming analysis, one can use the result to do further operational analysis as in OT&E (operation test and evaluation) and to evaluate the operational effectiveness of the jammers and to develop operational tactics to further increase the survivability of the fighter aircraft in the combat situation.

APA, Harvard, Vancouver, ISO, and other styles

4

Pedersen, Kasper. "On Systematic Scan." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491106.

Full text

Abstract:

In this thesis westudy the mixing time of systematic scan Markov chains on finite spin systems. A systematic scan Markov chain is a IVlarkov chain which updates the sites in a deterministic order and this type of :Markov chain is often seen as intuitively appealing in terms of implementation to scientists conducting experimental work. Until recently systematic scan :~vlarkov chains have largely resisted analysis and a gap in the parameters that imply rapid mixing has developed between systematic scan Markov chains and the more frequently studied random update Markov chains. \Ve reduce this gap in this thesis by improving the parameters for which systematic scan mixes when applied to several well-known spin systems. The main contribution of this thesis is the introduction of a new technique for proving rapid mixing of systematic scan Markov chains. It is known that, in a single-site setting, the mixing time of systematic scan can be bounded in terms of the influence that sites have on each other. \Ve generalise this technique for bounding the mixing time of systematic scan to block dynamics, a setting in which a (constant size) set of sites are updated simultaneously. In particular we introduce a parameter corresponding to the maximum influence on any site and show that if this parameter is sufficiently small, then the corresponding systematic scan Markov chain mixes rapidly. \Ve present several applications of this new proof technique. In particular we show that systematic scan mixes rapidly on spin systems corresponding to proper q-colourings of (1) general graphs, (2) trees, and (3) the grid for improved parameters than were previously known. \Ve also obtain rapid mixing of systematic scan Markov chains for sampling H-colourings of the n-vertex path for a restricted family of H using this technique. The H-colouring result is extended to general graphs H by placing more restrictions on the scan and using path coupling, a well-established technique for bounding mixing times of ivlarkov chains. Path coupling is also used to prove rapid mixing of a single-site systematic scan for sampling proper q-colourings of bipartite graphs. Supplied by The British Library - 'The world's knowledge'

APA, Harvard, Vancouver, ISO, and other styles

5

Jiaxing, Liu, and Yang Hongjun. "A FREQUENCY SCAN/FOLLOWING SCAN TWOWAY CARRIER ACQUISITION METHOD FOR USB SYSTEM." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604530.

Full text

Abstract:

ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada
This paper introduces a frequency scan/following scan twoway carrier acquisition method for USB and its following scan slope decision algorithm. Some measures are used to improve twoway acquisition speed such as selecting initiation direction and returning to zero in the shortest path, which can be implemented by software. Theoretic analysis, mathematical expression, design method and experiment results are provided. Practical engineering application shows the twoway acquisition using this new method has many advantages such as fast speed, low cost and programmability. The method has been used in Chinese USB system widely.

APA, Harvard, Vancouver, ISO, and other styles

6

Malmhaug, Jim Kristian. "Oppgradering av SiWa-Scan." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24345.

Full text

Abstract:

Kapittel 1 gir en kort introduksjon til fenomenene dislokajoner, tvillinger og korngrenser. Kapitlet gir også en kort beskrivelse av tidligere prosjekter på SiWa-Scan. I kapittel 2 gjennomgås jobben med å oppgradere optikken på instrumentet, og målinger gjort med referansesensoren. Det tar også for seg støy som oppstår i målingene og hvordan man teller dislokasjoner i SiWa-Scan. Resultatet av dette var at man fikk til en bedre måling fra referansesensoren, og man kom frem til en ny korreksjonfaktor for telling av dislokasjoner. I kapittel 3 gjennomgås teori for digitalkamera og kameraets parametre. Ved uttesting og endring av lukketid kom man frem til at kameraet kunne økes fra 25 FPS til 40 FPS. Dette førte til en kortere analysetid for SiWa-Scan. Fjerde kapittel viser hvordan brukergrensesnittet er laget i SiWa-Scan. Brukergrensesnitt-versjonen som tilhører denne rapporten er en enklere og mer strukturert versjon enn den tidligere. Kapittel 5 går gjennom oppbyggingen av nytt LabVIEW-program for SiWa-Scan, og innføringen av FIFO-kø. Ved hjelp av FIFO-køen gjorde man analysen av bilder uavhengig fra bildetakingen. Kapittel 6 viser hvordan bilder av dislokajoner og tvillinger blir i SiWa-Scan, og hva man må tenke på når man skal lage en kode for strekgjenkjenning i dette instrumentet. Det sier også litt om en påbegynt C-kode, og den resulterende LabVIEW-koden for gjenkjenning av tvillinger. Kapittel 7 inneholder fire forskjellige tester gjort på SiWa-Scan. Kapittel 8 og 9 diskuterer og konkluderer oppgaven.

APA, Harvard, Vancouver, ISO, and other styles

7

Mills, George T. "VIDEO SCAN RATE CONVERTER." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/608883.

Full text

Abstract:

International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, California
A simple technique to convert 675 and 875 line video to the more common 525 line rate is presented. The higher density 875 and 675 videos are stored and rescanned at the 525 line rate to produce a video signal that is essentially the same video signal that would have originally been generated by a 525 line video sensor (camera).

APA, Harvard, Vancouver, ISO, and other styles

8

Pagalone, Vinod. "Automatic test pattern generator for full scan sequential circuits using limited scan operations /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1251871351&sid=8&Fmt=2&clientId=1509&RQT=309&VName=PQD.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Huang, Bingsheng, and 黃炳升. "Radiation dose and cancer risk of cardiac CT scan and PET-CT scan." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B41757993.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Huang, Bingsheng. "Radiation dose and cancer risk of cardiac CT scan and PET-CT scan." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B41757993.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Berggren, Erik. "Testverktyg för JTAG Boundary Scan." Thesis, Linköpings universitet, Datorteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-135785.

Full text

Abstract:

Ett projekt har genomförts i python för att läsa och analysera nätlistor från eCAD programmet Altium. Projektet är en prototyp till en mjukvara som färdigutvecklad ska kunna användas till att automatisera kontakttest på mönsterkort mha JTAG Boundary Scan. Projektet undersöker hur stor andel av kontaktbanorna på några godtyckligt valda mönsterkort som är tillgängliga för Boundary Scan test och finner att i snitt 39% av kontaktbanorna är observerbara.

APA, Harvard, Vancouver, ISO, and other styles

12

Mudlapur, Anandshankar S. Agrawal Vishwani D. "Practically realizing random access scan." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/MUDLAPUR_ANAND_14.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Socal, Mariana Peixoto. "Genes principais e genes predisponentes à doença de Parkinson : estudo sobre os genes PARK2, PARK6, PARK7, PARK8, SCA1, SCA2, SCA3, SCA6, SCA7 e o gene da glucocerebrosidase." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/16850.

Full text

Abstract:

A doença de Parkinson é freqüente no mundo todo, atingindo indivíduos de todas as idades e etnias. Embora comum e muito estudada, seus mecanismos causais ainda não são plenamente conhecidos e ainda não há tratamento curativo. Atualmente, são conhecidos alguns fatores ambientais e genéticos associados ao desenvolvimento da doença de Parkinson. Dentre os fatores genéticos, foram identificados diversos genes que podem, ou determinar a ocorrência da doença de forma mendeliana (genes principais), ou apenas aumentar o risco de seu surgimento (genes de suscetibilidade). Embora os fatores genéticos, em conjunto, sejam responsáveis por uma minoria dos casos, permanece relevante esta investigação, para promover um aconselhamento genético adequado para os portadores de formas mendelianas, para adequar medidas de tratamento e reconhecer características clínicas e de prognóstico, oportunizando, inclusive, ampliar o entendimento dessa condição. O presente estudo analisou pacientes portadores de doença de Parkinson em acompanhamento no Hospital de Clínicas de Porto Alegre, que apresentavam baixa idade de início dos sintomas, história familiar positiva ou presença de manifestações atípicas da doença. Essas características foram utilizadas como critério de seleção dos pacientes por estarem associadas com maior probabilidade de detecção de causas genéticas. Os pacientes foram submetidos à avaliação clínica e à testagem molecular para diversos genes principais e de suscetibilidade. Foram, posteriormente, comparadas as características clínicas dos pacientes positivos com relação aos demais pacientes estudados. Os resultados são apresentados sob a forma de três artigos, que descrevem, respectivamente, os achados moleculares da investigação para os genes causais autossômicos recessivos (genes PARK2, PARK6, PARK7 e PARK8), autossômicos dominantes (genes SCA1, SCA2, SCA3, SCA6 e SCA7) e o gene de suscetibilidade (gene GBA).

APA, Harvard, Vancouver, ISO, and other styles

14

Xu, Gefu Singh Adit D. "Delay Test Scan Flip-Flop c(DTSFF) design and its applications for scan based delay testing." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Fall%20Dissertations/Xu_Gefu_18.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Bäckström, David. "Boundary-Scan in the ATCA standard." Thesis, Linköping University, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-3282.

Full text

Abstract:

Larger systems today, like telephone and optical switches, are usually based on a multiboard architecture where a set of printed-circuit boards are connected to a backplane board. These systems are also equipped with Boundary-Scan to enable testing, however, the backplane in a multi-board system has a limited wiring capability, which makes the additional backplane Boundary-Scan wiring highly costly. The problem is to access the Boundary-Scan enabled boards with the Boundary-Scan controller located at a central board. In this MSc. thesis project we propose an approach suitable for the Advanced Telecommunication Computing Architecture (ATCA) standard where we make use of the existing Intelligent Platform Management Bus (IPMB) and expands its protocol for application of Boundary-Scan tests. We have also defined a command set as well as a test data format for storing embedded test data on the boards to support the remote execution of Boundary-Scan tests. For validation of the proposed approach we have developed demonstrator.

APA, Harvard, Vancouver, ISO, and other styles

16

Sayasneh, Ahmad. "Ultrasound scan characterisation of ovarian masses." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/34343.

Full text

Abstract:

Background: Different ultrasound based models, rules and descriptors are used to characterise ovarian masses. LR2 is a logistic regression model with six variables to assess the preoperative risk of ovarian malignancy. Simple rules (SR) are ten features of an adnexal mass that may be identified using ultrasonography. Simple descriptors (SD) are five ultrasound characteristics and one based on age and serum CA 125 that enable an intuitive classification of adnexal masses. Objectives: The main aim was to assess the performance of the conventional (Risk of Malignancy Index RMI) and the IOTA (International Ovarian Tumour Analysis Group) models (LR2, SR and SD) and subjective assessment (SA) by examiners of varied ultrasound training and experience (level II). Methods: We carried out a prospective single-blinded randomised controlled trial (IOTA 4a) to investigate the referral pattern following the use of RMI and LR2. In IOTA 4b, diagnostic performance measures for LR2, RMI, SR, SD and SA were compared in a three-year multicentre prospective observational study. A prospective comparison was also carried out between LR2 and ROMA (Risk of Ovarian Malignancy Algorithm). Results: In the IOTA 4a RCT, LR2 correctly classified 100% of benign masses as low risk compared to 70% for RMI (difference of 30%. p < 0.0001). In IOTA 4b study, a higher AUC for LR2 compared to RMI was observed in premenopausal women (0.93 and 0.83 respectively. p=0.05). Overall the combination of SD and SR were able to characterise 89% of masses (DOR of 348). Subjective assessment by level II ultrasound examiners had a DOR of 85.56. In relation to ROMA, the AUC of LR2 for discriminating between benign and malignant adnexal masses (0.952) was higher than that of ROMA (0.893) (p=0.0004). Conclusion: The overall test performance of IOTA LR2, SR and SD was maintained in the hands of examiners with varying levels of training and experience. This performance was generally better than the RMI. LR2 showed a better diagnostic performance than ROMA.

APA, Harvard, Vancouver, ISO, and other styles

17

Corbin, Max. "Surface fitting head scan data sets." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175886726.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Samaranayake, Samitha 1978. "A reconfigurable shared scan-in architecture." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87890.

Full text

Abstract:

Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
Includes bibliographical references (p. 97-100).
by Samitha Samaranayake.
M.Eng.

APA, Harvard, Vancouver, ISO, and other styles

19

Xie, Xiaojin. "Variation in Computerized Tomography Scan Utilization." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/44723.

Full text

Abstract:

The U.S. health care system is one of the most expensive health care systems in the world, yet it is not as efficient as it is expected. Studies have shown that the use of expensive imaging procedures, such as CT scans, was significantly increasing for the past few years. However, the increased number of CT scans may not help to improve quality of care. No studies are conducted on investigate geographic variation on CT scan usage rate. This research is the first one to examine CT scan usage rate among counties and to examine variation caused by patient and hospital characteristics. We used the 2007 HCUP-SID database provided data for the research. GIS graph was used to illustrate geographic variation on CT scan usage in New York State. Contingency tables were developed to evaluate to what extent patient and hospital characteristics contribute to the variation. A logistic regression model was built to control the variation caused by patient and hospital characteristics in order to find variation contributed by other potential factors such as availability of CT scanners and radiologists. Significant geographic variation of CT scan usage rate in the county level of New York State was found. Patient demographics, insurance status and medical conditions as well as hospital bed size and teaching status were contributing factors to the variation. After controlling these factors, significant geographic variation was still found. It indicates that other potential reasons would influence the technology use.
Master of Science

APA, Harvard, Vancouver, ISO, and other styles

20

Amărioarei, Alexandru. "Approximations for multidimensional discrete scan statistics." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10073/document.

Full text

Abstract:

Dans cette thèse nous obtenons des approximations et les erreurs associées pour la distribution de la statistique de scan discrète multi-dimensionnelle. La statistique de scan est vue comme le maximum d'une suite de variables aléatoires stationnaires 1-dépendante. Dans ce cadre, nous présentons un nouveau résultat pour l'approximation de la distribution de l'extremum d'une suite de variables aléatoire stationnaire 1-dépendante, avec des conditions d'application plus larges et des erreurs d'approximations plus petites par rapport aux résultats existants en littérature. Ce résultat est utilisé ensuite pour l'approximation de la distribution de la statistique de scan. L'intérêt de cette approche par rapport aux techniques existantes en littérature est du à la précision d'une erreur d'approximation, d'une part, et de son applicabilité qui ne dépend pas de la distribution du champ aléatoire sous-adjacent aux données, d'autre part.Les modèles considérés dans ce travail sont le modèle i.i.d et le modèle de dépendance de type block-factor. Pour la modélisation i.i.d. les résultats sont détaillés pour la statistique de scan uni, bi et tri-dimensionnelle. Un algorithme de simulation de type "importance sampling" a été introduit pour le calcul effectif des approximations et des erreurs associées. Des études de simulations démontrent l'efficacité des résultats obtenus. La comparaison avec d'autres méthodes existantes est réalisée. La dépendance de type block-factor est introduite comme une alternative à la dépendance de type Markov. La méthodologie développée traditionnellement dans le cas i.i.d. est étendue à ce type de dépendance
In this thesis, we derive accurate approximations and error bounds for the probability distribution of the multidimensional discrete scan statistics. We start by improving some existing results concerning the estimation of the distribution of extremes of 1-dependent stationary sequences of random variables, both in terms of range of applicability and sharpness of the error bound. These estimates play the key role in the approximation process of the multidimensional discrete scan statistics distribution. The presented methodology has two main advantages over the existing ones found in the literature: first, beside the approximation formula, an error bound is also established and second, the approximation does not depend on the common distribution of the observations. For the underlying random field under which the scan process is evaluated, we consider two models: the classical model, of independent and identically distributed observations and a dependent framework, where the observations are generated by a block-factor. In the i.i.d. case, in order to illustrate the accuracy of our results, we consider the particular settings of one, two and three dimensions. A simulation study is conducted where we compare our estimate with other approximations and inequalities derived in the literature. The numerical values are efficiently obtained via an importance sampling algorithm discussed in detail in the text. Finally, we consider a block-factor model for the underlying random field, which consists of dependent data and we show how to extend the approximation methodology to this case. Several examples in one and two dimensions are investigated

APA, Harvard, Vancouver, ISO, and other styles

21

Emmel, Vanessa Erichsen. "Análise de repetições CAG nos genes SCA1, SCA2, SCA3 e SCA6 em pacientes com suspeita clínica de ataxia espinocerebelar." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/10967.

Full text

Abstract:

As ataxias espinocerebelares (SCAs) são doenças neurodegenerativas com herança autossômica dominante que apresentam grande heterogeneidade clínica e genética. O diagnóstico é realizado pela detecção da mutação no gene causador, que, na sua maioria, é uma expansão de repetições trinucleotídicas CAG. O objetivo deste estudo foi analisar os polimorfismos de repetições trinucleotídicas nos genes associados as SCAs tipo 1, tipo 2, tipo 3 e tipo 6 através de PCR-multiplex e eletroforese capilar, visando a melhoria do diagnóstico molecular e a determinação da distribuição das regiões polimórficas nos alelos normais. As análises foram realizadas em 124 pacientes não-aparentados que apresentavam sintomas de ataxia. Nessa amostra, foram identificados 10 pacientes com SCA2, 39 pacientes com SCA3 e 2 pacientes com SCA6. Não encontramos amostras com uma expansão CAG no gene SCA1. Os polimorfismos de cada loci foram estudados nos cromossomos normais desses pacientes (n=209-248). A freqüência dos alelos normais grandes no locus SCA1 (>32 repetições CAG) foi estabelecida em 0,05 e no locus SCA2 (>22 repetições CAG) foi 0,11, enquanto que no locus SCA3 (alelos >28 repetições) a freqüência foi 0,11. A freqüência de alelos normais grandes para o locus SCA6 (>13 repetições) foi 0,04. Concluindo, este estudo proporcionou a primeira análise detalhada da distribuição de repetições CAG nos loci SCA1, SCA2, SCA3 e SCA6 por amplificação multiplex e eletroforese capilar em pacientes brasileiros. A freqüência dos alelos normais grandes nos genes SCA3 e SCA6 nessa amostra reflete a prevalência destas duas doenças na nossa população, concordando com a hipótese que alelos patogênicos podem ser originados pela expansão de alelos normais grandes.
Spinocerebellar ataxias (SCAs) are neurodegenerative disorders inherited as an autosomal dominant trait that present large genetic and clinical heterogeneity. An accurate diagnosis relies on mutation detection in a specific causative gene, which is typically an abnormal number of CAG trinucleotide repeats. The aim of this study was to analyze polymorphic regions of trinucleotide repeats in SCA1, SCA2, SCA3, and SCA6 associated genes through multiplex PCR and capillary electrophoresis, aiming the improvement of molecular diagnosis and distribution of CAG repeats number in normal alleles. Analyses were carried out in 124 unrelated Brazilian patients who presented symptoms of progressive ataxia. To date, we identified 10 patients with SCA2, 39 patients with SCA3, and 2 patients with SCA6. No alleles were identified with a CAG expansion tract in the SCA1 gene. Normal CAG repeats length range was established using data from normal chromosomes (n=209-248). Frequency of large normal alleles in SCA1 locus (>32 CAG repeats) was determined to be 0.05. Frequency of large normal alleles at the SCA2 locus (>22 CAG repeats) was shown to be 0.11 while at the SCA3 locus (>28 CAG repeats) frequency of large normal alleles was 0.11. At the SCA6 locus, frequency of large normal alleles (>13 CAG repeats) was found to be 0.04. Moreover, this study provides the first detailed analysis, to our knowledge, of the distribution of CAG repeats at the SCA1, SCA2, SCA3, and SCA6 loci by multiplex-PCR and automated capillary electrophoresis in Brazilian patients. Frequency of large normal alleles in SCA3 and SCA6 genes established in this sample reflects the prevalence of these two diseases in our population, supporting the hypothesis that disease alleles emerge from expansion of large normal alleles.

APA, Harvard, Vancouver, ISO, and other styles

22

Mahmoud, Ahmed Gamal Mohamed. "Boundary-scan for High-speed Serial Links." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

Find full text

Abstract:

The complexity of integrated circuit (IC) designs continues to increase with the constant advancement of process technology and decrease of feature size in a relentless effort to achieve better performance and reach new milestones. However, with the increasing density and complexity comes a higher probability of defects occurring as well as a higher impact of these defects on the overall performance. Testing, thus, proves essential in order to guarantee defect-free designs. Effective and efficient testing in terms of both cost and time becomes essential as well because of the continually rising cost of testing. Abstract Serializer-deserializer (SerDes) devices or serial-link transceivers, which represent the device-under-test (DUT) in this thesis, are no different. Since the interface is the bottleneck in the performance of various systems, efforts continue to push for faster, smaller, and more power-efficient SerDes, leaving it with stringent specifications to meet. This leads to it being susceptible to the higher defect probability we just mentioned. As these are wireline transceivers, the robustness of the interconnects is especially critical. These defects that affect the interconnects are troublesome due to the fact that it is relatively easy for the fault to be masked which would indicate a non-existent fault within the design itself. In this thesis, we propose a test receiver that is capable of putting the interconnects under test in both DC-coupled and AC-coupled scenarios in compliance with the IEEE-1149.1 and IEEE-1149.6 standards.

APA, Harvard, Vancouver, ISO, and other styles

23

Baig, Aijaz. "Embedded boundary scan for test & debug." Thesis, Linköping University, Department of Computer and Information Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19368.

Full text

Abstract:

The boundary scan standard which has been in existence since the early nineties is widely used to test printed circuit boards (PCB). It is primarily aimed at providing increased physical test access to surface mounted devices on printed circuit boards (PCB). Using boundary scan avoids using functional testing and In-circuit-techniques like 'bed of nails' for structurally testing PCBs as increasing densities and complexities made opting for them a herculean task. Though the standard has had a revolutionizing effect on board testing conducted during the development and production phases, there is a lack of a standardized mechanism to allow IEEE 1149.1 to be used in a system post installation. This has led to problems typically encountered during field test runs, like the issue of high number of No-Fault-Found (NFF), being left unaddressed. The solution lies in conducting a structural test after a given module has already been installed in the system. This can be done by embedding the programmability features of the boundary scan test mechanism into the Unit under test (UUT) thereby enabling the UUT to conduct boundary scan based self tests without the need of external stimuli. In this thesis, a test and debug framework, which aims to use boundary-scan in post system-installation, is the subject of a study and subsequent enhancement. The framework allows embedding much of the test vector deployment and debug mechanism onto the Unit under test (UUT) to enable its remote testing and debug. The framework mainly consists of a prototype board which, along with the UUT, comprise the 'embedded system'. The following document is a description of the phased development of above said framework and its intended usage in the field.

APA, Harvard, Vancouver, ISO, and other styles

24

Zia, Victor. "BIST fault diagnosis in scan-based modules." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0034/MQ50682.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Postma, Eric Onno. "SCAN: a neural model of covert attention." Maastricht : Maastricht : Rijksuniversiteit Limburg ; University Library, Maastricht University [Host], 1994. http://arno.unimaas.nl/show.cgi?fid=7028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Diver, Chris. "A customer support tool for scan computers /." Leeds : University of Leeds, School of Computer Studies, 2008. http://www.comp.leeds.ac.uk/fyproj/reports/0708/Diver.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Zia, Victor. "BIST fault diagnosis in scan-based modules." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21337.

Full text

Abstract:

Testing digital devices constitutes a major portion of the cost and effort involved in their design, production, and use. Built-In Self-Test (BIST) has been warmly embraced by the Integrated Circuits (IC) industry as a solution for the continuously aggravating testing problem. BIST provides a simple go/no-go test screening answer. However, when test fall-out is high, it becomes necessary to diagnose faults to improve the yield.
Signature Analysis (SA) is typically used in a BIST environment to compact the outputs of a module into a final signature. Several SA-based diagnostic schemes have been developed in the past. An overwhelming majority of these techniques assume the presence of very few error bits in the Test Response Sequence (TRS). However, this assumption is generally unrealistic since a faulty device in a practical BIST environment can generate an enormous number of erroneous bits in the TRS.
In this thesis, a comprehensive survey of the current SA-based BIST diagnostic schemes is presented first. Then, novel BIST fault diagnosis techniques for scan-based VLSI modules are presented, based on multiple signature analysis. (Abstract shortened by UMI.)

APA, Harvard, Vancouver, ISO, and other styles

28

Panda, Uma R. "An efficient single-latch scan-design scheme/." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63266.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Dreux, M. de A. "A hybrid scan-line/ray-tracing algorithm." Thesis, Brunel University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233395.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Petty, Richard Stephen. "Stereoscopic line-scan imaging using rotational motion." Thesis, Nottingham Trent University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360746.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Miller, A. P. "Rapid scan pulse array focused imaging system." Thesis, University of Portsmouth, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293149.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Meng, Jiqun J. "Line scan proton magnetic resonance spectroscopic imaging." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36963.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Yap, Tammy 1976. "SCAN : a statistic code analyser for JavaScheme." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80578.

Full text

Abstract:

Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
Includes bibliographical references (p. 45).
by Tammy Yap.
S.B.and M.Eng.

APA, Harvard, Vancouver, ISO, and other styles

34

Hendriks, Lukas Anton. "Image processing techniques for sector scan sonar." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2487.

Full text

Abstract:

Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.
ENGLISH ABSTRACT: Sonars are used extensively for underwater sensing and recent advances in forward-looking imaging sonar have made this type of sonar an appropriate choice for use on Autonomous Underwater Vehicles. The images received from these sonar do however, tend to be noisy and when used in shallow water contain strong bottom reflections that obscure returns from actual targets. The focus of this work was the investigation and development of post-processing techniques to enable the successful use of the sonar images for automated navigation. The use of standard image processing techniques for noise reduction and background estimation, were evaluated on sonar images with varying amounts of noise, as well as on a set of images taken from an AUV in a harbour. The use of multiple background removal and noise reduction techniques on a single image was also investigated. To this end a performance measure was developed, based on the dynamic range found in the image and the uniformity of returned targets. This provided a means to quantitatively compare sets of post-processing techniques and identify the “optimal” processing. The resultant images showed great improvement in the visibility of target areas and the proposed techniques can significantly improve the chances of correct target extraction.
AFRIKAANSE OPSOMMING: Sonars word algemeen gebruik as onderwater sensors. Onlangse ontwikkelings in vooruit-kykende sonars, maak hierdie tipe sonar ’n goeie keuse vir die gebruik op ’n Outomatiese Onderwater Voertuig. Die beelde wat ontvang word vanaf hierdie sonar neig om egter raserig te wees, en wanneer dit in vlak water gebruik word toon dit sterk bodemrefleksies, wat die weerkaatsings van regte teikens verduister. Die fokus van die werk was die ondersoek en ontwikkeling van naverwerkings tegnieke, wat die sonar beelde bruikbaar maak vir outomatiese navigasie. Die gebruik van standaard beeldverwerkingstegnieke vir ruis-onderdrukking en agtergrond beraming, is geëvalueer aan die hand van sonar beelde met verskillende hoeveelhede ruis, asook aan die hand van ’n stel beelde wat in ’n hawe geneem is. Verdere ondersoek is ingestel na die gebruik van meer as een agtergrond beramings en ruis onderdrukking tegniek op ’n enkele beeld. Hierdie het gelei tot die ontwikkeling van ’n maatstaf vir werkverrigting van toegepaste tegnieke. Hierdie maatstaf gee ’n kwantitatiewe waardering van die verbetering op die oorspronklike beeld, en is gebaseer op die verbetering in dinamiese bereik in die beeld en die uniformiteit van die teiken se weerkaatsing. Hierdie maatstaf is gebruik vir die vergelyking van verskeie tegnieke, en identifisering van die “optimale” verwerking. Die verwerkte beelde het ’n groot verbetering getoon in die sigbaarheid van teikens, en die voorgestelde tegnieke kan ’n betekenisvolle bedrae lewer tot die suksesvolle identifisering van obstruksies.

APA, Harvard, Vancouver, ISO, and other styles

35

Tuček, Marek. "Frekvenční rapid-scan EPR na organických radikálech." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-382258.

Full text

Abstract:

Tato práce popisuje historicky první multi-frekvenční rapid-scan EPR. Při zavedení mikrovlnného záření z oblasti 200 GHz a následnou sinusovou modulací bylo dosaženo rychlostí změn frekvence až 61 500 THz/s a zkreslení spekter, známé jako ”wiggles”, bylo pozorováno u obou studovaných vzorků organických radikálů – BDPA v polystyrenové matici a LiPc. Tato práce představuje flexibilní metodu provádění rapid-scan EPR experimentů za použití napětím ovládaného oscilátoru (Voltage Controlled Oscillator; VCO) jako zdroje a zero-bias detektoru (ZBD) pro detekci, čímž se otevírá možnost postupu dále do oblastí vyšších polí / vyšších frekvencí. Dále je popsán postup získání ustáleného spektra z rapid-scan výsledků, známý jako Fourierovská dekonvoluce, a dále je zjistěn spinový dekoherenční čas vzorků pomocí srovnání experimentálních spekter s výsledky numericky vyřešených Blochových rovnic. Výsledné hodnoty jsou 50 ns pro BDPA a 12 ns pro LiPc.

APA, Harvard, Vancouver, ISO, and other styles

36

Jamjoom, Faris Zainalabedeen. "Positional Accuracy of Prosthetic Treatment Plan Incorporation Into Cone-beam Computed Tomography Scans Using Surface Scan Superimposition." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1498241824233391.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Agirnas, Emre. "Multi-scan Data Association Algorithm For Multitarget Tracking." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12605646/index.pdf.

Full text

Abstract:

Data association problem for multitarget tracking is determination of the relationship between targets and the incoming measurements from sensors of the target tracking system. Performance of a multitarget tracking system is strongly related to the chosen method for data association and target tracking algorithm. Incorrect data association effects state estimation of targets. In this thesis, we propose a new multi-scan data association algorithm for multitarget tracking systems. This algorithm was implemented by using MATLAB programming tool. Performances of the new algorithm and JPDA method for multiple targets tracking are compared. During simulations linear models are used and the uncertainties in the sensor and motion models are modeled by Gaussian density. Simulation results are presented. Results show that the new algorithm'
s performance is better than that of JPDA method. Moreover, a survey over target tracking literature is presented including basics of multitarget tracking systems and existing data association methods.

APA, Harvard, Vancouver, ISO, and other styles

38

Myjak, Michael D. (Michael David). "Computer Graphics Primitives and the Scan-Line Algorithm." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc500544/.

Full text

Abstract:

This paper presents the scan-line algorithm which has been implemented on the Lisp Machine. The scan-line algorithm resides beneath a library of primitive software routines which draw more fundamental objects: lines, triangles and rectangles. This routine, implemented in microcode, applies the A(BC)*D approach to word boundary alignments in order to create an extremely fast, efficient, and general purpose drawing primitive. The scan-line algorithm improves on previous methodologies by limiting the number of CPU intensive instructions and by minimizing the number of words referenced. This paper will describe how to draw scan-lines and the constraints imposed upon the scan-line algorithm by the Lisp Machine's hardware and software.

APA, Harvard, Vancouver, ISO, and other styles

39

Kaltmann, Deena, and s8907403@student rmit edu au. "Quantitative Line-Scan Thermographic Evaluation of Composite Structures." RMIT University. Aerospace, Mechanical & Manufacturing Engineering, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091019.101029.

Full text

Abstract:

This MEng (Master of Engineering) research thesis evaluates the capabilities and limitations of line-scan thermography for the non-destructive evaluation of composite structures containing hidden defects. In simple terms, line-scan thermography is a state-of-the-art technique in which a focused line of thermal energy is transmitted into a material. Line-scan thermography has great potential for the rapid and low cost non-destructive inspection of composite structures for aircraft, automobiles and ships. In this project, theoretical research exploring the heat transfer physics was undertaken in conjunction with experimental studies to develop an optimum inspection regime for line-scan thermography. The capability of line-scan thermography to detect impact damage in carbon/epoxy laminates was experimentally investigated in Chapter 3. From the impact side, in all materials, line-scan thermography overestimated the size of the impact damage whereas flash thermography underestimated the size. There was a close relationship between the ultrasonic profile and the line-scan thermographic thermal response curve. New experimental data has been produced and analysed for the ability of line-scan thermography to determine the defect as well as the defect size. It was found that line-scan thermography was able to distinguish back drilled holes, but it was not possible to determine accurate defect sizing due to the depth of the holes from the inspected surface and the limitations associated with the line-scan thermographic apparatus itself. There was excellent correlation between the C-scan ultrasonics intensity curves and the line-scan thermographs as well as excellent correlation with the theoretical results. The relationship between line-scan thermography and foreign body objects were experimentally investigated for carbon/epoxy composites. A major limitation found with line-scan thermography is its limited depth penetration, which is highlighted in the foreign object study using 6 mm and 13 mm diameter Teflon® discs and 13 mm Teflon® strips embedded in carbon/epoxy laminates. Depth penetration allowed only 2 mm resolution for the 13 mm diameter discs and 1.5 mm resolution for the 6 mm discs in a composite panel. The results of the investigation of stainless steel shim objects in carbon/epoxy laminates reveal that line-scan thermography is capable of determining their presence and size close to the surface. There was also excellent correlation between the ultrasonic response curve and the line-scan thermographic intensity curve. The results of the investigation of thermoplastic film foreign body objects in carbon/epoxy laminates show that at present line-scan thermography does not have the capability to determin e such defects. Experimental results show that line-scan thermography is capable of detecting large voids, back drilled holes, some foreign body objects, and impact damage. However, the ability of line-scan thermography to measure the defect dimensions is dependent on the size and type of damage, the distance from the line source, the depth of the defect, and the type of composite material.

APA, Harvard, Vancouver, ISO, and other styles

40

Lim, Han Leong. "Network payload integration for the Scan-Eagle UAV." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FLim%5FHan.pdf.

Full text

Abstract:

Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, December 2007.
Thesis Advisor(s): Healey, Anthony J. "December 2007." Description based on title screen as viewed on Jan. 23, 2008. Includes bibliographical references (p. 47-48). Also available in print.

APA, Harvard, Vancouver, ISO, and other styles

41

Kollipara, Suresh Babu. "Organic Electrochemical Transistors for Fast Scan Cyclic Voltammetry." Thesis, Linköpings universitet, Fysik och elektroteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-98676.

Full text

Abstract:

The work presented in the thesis is about the evaluation of Organic Electrochemical Transistors (OECTs) for fast scan cyclic voltammetry (FSCV). FSCV is a method which has been used for real time dopamine sensing both in vivo and in vitro. The method is sensitive to noise and could therefore benefit from signal preamplification at the point of sensing, which could be achieved by incorporation of OECTs. In this study the OECTs are based on the conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). The gate consists of gold microelectrodes of different sizes to be used one at a time. When dopamine is reacted at the gate electrode, the redox state of the PEDOT:PSS OECT channel is modulated and the resulting change in drain current can be measured. The gate current, which contains the sensing information, is after filtering obtained by differentiating the channel potential with respect to time. The derived gate current is plotted in cyclic voltammogram for different dopamine concentrations and the amplitude of the oxidation/reduction peaks can be used to determine the dopamine concentration. In this thesis for the first time it is demonstrated that OECTs can be used for FSCV detection of dopamine. The results are discussed and an outlook on future work is given.

APA, Harvard, Vancouver, ISO, and other styles

42

Hassan, Abu S. M. (Abu Saleem Mahmudul). "Testing of board interconnects using boundary scan architecture." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74304.

Full text

Abstract:

The testing of printed circuit board (PCB) interconnects is a complex task that requires enormous amount of resources. With the increasing use of new technologies like surface mounting technology (SMT), testing PCB interconnects using the available techniques, like in-circuit testing and functional testing, is becoming very difficult. To make testing manageable, it must be considered earlier in the design process. This is known as 'design for testability' (DFT). A hierarchical DFT approach known as boundary scan architecture has recently become an increasingly attractive solution for PCB interconnect testing problems. This framework provides a scan path for electronic access to the interconnect test points, thus removing the need for accessibility through electro-mechanical contacts known as 'bed of nails'.
In the recent past, several researchers have proposed different schemes for PCB interconnect testing based on the boundary scan architecture.
In this dissertation, a new approach, based on the concept of built-in self-test (BIST), is developed using the boundary scan architecture for PCB interconnect testing. BIST, at the component level, generally consists of incorporating additional circuitry on the chip to generate test patterns and to compact the response of the circuit under test into a reference signature. For the PCB level BIST, the board is considered as the unit under test. A family of BIST schemes are developed for board interconnect testing utilizing the properties of the boundary scan architecture. The BIST approach has removed the dependence on automatic test equipment (ATE) for generation of test vector sets and analysis of output data sets. Techniques are developed for the generation of test vector sets which require very simple test generation hardware. Test vector sets are shown to be independent of the order of the input/output (I/O) scan cells in the boundary scan chain and of the structural complexity of the interconnects under test. Response compaction techniques proposed in the schemes are such that fault detection and diagnosis can be done independent of the topological information about the interconnects. These response compaction techniques can be implemented within each boundary scan cell or outside the boundary scan chain, providing a trade-off in terms of test time and hardware complexity. The various uses of the boundary scan architecture make the proposed schemes more attractive and advantageous than the existing approaches for board interconnect testing.
Moreover, a family of interconnect testing schemes is proposed for a partial boundary scan environment. Partial boundary scan environment refers to a board with a mix of boundary scan and non-boundary scan components. Such an environment is more complex compared to a complete boundary scan environment. The proposed schemes are BIST-able despite the inherently complex test environment. However, fault coverage is limited because of the reduced accessibility of the partial boundary scan environment.

APA, Harvard, Vancouver, ISO, and other styles

43

McBean, David P. O. "Board interconnect testing in a boundary scan environment." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333253.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Sheikh, Shiba. "Sharedcare : Design Oriented Innovation Scan of Informal Health." Research Showcase @ CMU, 2014. http://repository.cmu.edu/theses/76.

Full text

Abstract:

Shared Care is a paradigm shift that addresses informal health, which probes into health for the healthy and care that is non-institutional. A shift from ‘my health is my problem’ to informal care systems based on proximity and trust. The community is mutually responsible for the health of its members and shares common goals of wellbeing. A growing population in urban contemporary cities, as they transition through different phases of life are not foreseeing the effects of place, social support and care in their long term wellbeing. With the lack of faith in a healthcare system that equates good care to insurance, the opportunity is to move away from problem & symptom-based, fee-for-service care to focus on preventative care that lies outside of the current system in the US. The hypothesis that guided the research considered the intersection between health and social as an alternate / complimentary approach to preventive care as understood today. By using design as a research tool, rich narratives of personas were created that enabled crystallizing the potential to shift from the ‘me’ to the ‘we’ paradigm of one’s wellbeing. Disclosing emergent spaces where service design can be used as an entrepreneurial approach to envision solutions that enable informal support systems between weak tied individuals based on physical proximity. Motivations, infrastructure and characteristics of designing for these emergent spaces in housing, mobility, work life, food systems and sociality, were identified as holistic components of ones overall wellbeing. By applying the ‘we’ paradigm framework to the design of services we can further investigate the transition towards health related sociality within communities.

APA, Harvard, Vancouver, ISO, and other styles

45

Johansson, Viktor, and Philip Thuning. "Samma prestationsmätning, olika produktionskontexter? : En utvärderingsstudie av Scan." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45941.

Full text

Abstract:

Bakgrund: Livsmedelsbranschen är tuff för många producenter. Konkurrensen är hård och säljarens ställning är svag. Trenden i branschen rör sig emot att effektivisera företaget, såväl organisatoriskt som operativt. Prestationsmätning är en viktig del vid effektiviseringar men trots detta har få studier genomförts inom livsmedelsindustrin. Syfte: Syftet med studien är att utvärdera Scans prestationsmätningssystem och identifiera faktorer som kan öka jämförbarheten mellan produktionsenheter med olika produktionskontext. Ett bisyfte blir därmed att utveckla förbättringsförslag kring Scans prestationsmätningssystem. Metod: Uppsatsen är en kvalitativ studie bestående av en fallstudie med utvärderingsinriktning kring hur Scan arbetar med sin prestationsmätning. Datainsamlingen har primärt bestått av intervjuer med anställda som är ansvariga och operativt arbetar med prestationsmätningssystemet på produktionsnivå. Intervjuer har genomförts med personer från alla Scans anläggningar och på olika nivåer av företaget. Även årsredovisningar och företagsekonomiska teorier har varit en del av studien. Resultat och slutsatser: Studien visar att drivande styrtal lämpar sig bättre än utfallsmått vid jämförelser av produktionsenheter med olika produktionskontext samt att det är viktigt med en likriktad kommunikation när avdelningar skall jämföras. Studien visar även på flertalet förbättringsmöjligheter med Scans prestationsmätning.
Background: The food industry is tough for many producers. The competition is hard and the sellers position in the supply chain is weak. Trends in the industry mentions a more effective company, both organizational and operative. Performance measurement is a vital part to reach higher efficiency but it has despite that been few research studies on the subject. Purpose: The purpose of this study was to evaluate Scans performance measurement system and identify factors which can increase benchmarking between production units with different production contexts. Another purpose is to come up with improvements for Scans performance measurement system. Methodology: This report is a qualitative study consisting of how Scan are working with their performance measurement system. Data collection has primarily consisted of interviews of people that work with the performance measurement system. Also studies in annual reports and business economic theories have been part of the report. Results and conclusions: The study shows that leading indicators is better suited for benchmarking between production units with different production contexts. It is also important that the communication is unified throughout the company.

APA, Harvard, Vancouver, ISO, and other styles

46

籃健銘. "Scan Chain Partition for Scan Chain Diagnosis." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/32614318534157704629.

Full text

Abstract:

碩士
國立清華大學
資訊工程學系
100
Scan chain diagnosis has become a critical issue to yield loss in modern technology. In this thesis, we present a scan chain partition algorithm to improve scan chain fault diagnosis resolution. In our scan chain partition algorithm, we rst construct a controllability graph by netlist ependency, then perform the partition algorithm to decide which scan chain a scan cell belongs to. The experimental results show that our method can reduce the number of suspect scan cells from 378-4 to at most 2-3 for most cases of ITC'99 benchmarks.

APA, Harvard, Vancouver, ISO, and other styles

47

Chia-Hung, Tsai. "Power Reduction for Scan Testing Based on Scan Cell Ordering Power Reduction for Scan Testing Based on Scan Cell Ordering." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-0112200611303340.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Figueiredo, Luís Miguel Ribeiro da Silva Cabral. "Slit-scan." Master's thesis, 2011. http://hdl.handle.net/10400.14/8044.

Full text

Abstract:

The processing of the digital image brought new ways for all the known media to adapt to this new reality. The study of the digital media is not yet over and is to prove that the slit-scan technique still has many ways to develop that we create this study. We present the state of the of the slit-scan technique, not forgetting to mention the history of the image registration till it gets to the digital world. It’s also needed to present the concept of movement that is one of the most important subjects about slit-scan. Guestbook, the project made for the Master in Sound and Image will also be presented as it was developed side by side, using the same subject and investigation. In the end some research will be presented, identifying the development of some techniques and it’s results. During the research and the Dissertation some questions were tried to answer: -What is slit-scan and what is it useful for? -How can we use slit-scan in Science or in Art? -In how many ways can we use this technique and in what do they result? -Are there any new ways to progress with the slit-scan technique?
A presente Dissertação centra-se na técnica Slit-scan, introduzindo-a a partir das diversas etapas que levaram à sua origem. Da introdução dos conceitos básicos do movimento, até à origem da Fotografia, é apresentado o caminho artístico e cientifico que tornou possível o desenvolvimento de uma técnica que sem querer abriu uma porta para uma nova dimensão espácio-temporal. O Slit-scan tornou possível ao longo da história da arte do séc. XX uma nova percepção do tempo, do espaço e do movimento, representa-os de uma forma inovadora e que ultrapassou as barreiras do real. Os projectos artísticos apresentados demonstram diversos tipos de utilização e diversos tipos de resultados, em que a mais pequena alteração numa das variáveis cria uma nova janela para essa dimensão desconhecida. A apresentação do projecto Guestbook é referida, não só por ter sido um projecto que se desenvolveu ao mesmo tempo que a presente dissertação, mas porque explora uma vertente mais abrangente da técnica slit-scan. A Dissertação termina com uma análise dessa técnica – do tipo de utilizações e resultados, tentando responder à questão sobre as potencialidades do slit-scan ainda por explorar. São apresentados alguns resultados desse desenvolvimento

APA, Harvard, Vancouver, ISO, and other styles

49

Ching-Hua, Chiu. "Scan Cell Ordering for Power Reduction during Scan Testing." 2005. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-0112200611332527.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Chiu, Ching-Hua, and 邱清華. "Scan Cell Ordering for Power Reduction during Scan Testing." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/44105113962893031493.

Full text

Abstract:

碩士
元智大學
資訊工程學系
93
Low power consumption during test application has become increasingly important in the present VLSI design. Scan-based architectures are expensive in power consumption during scanning in test vectors. Excessive power consumption during test application may result in increased product cost and decrease of overall yield. Hence, minimizing power consumption during scan test will prevent from yield loss and thus reduce product cost. The purpose of this thesis is to minimize power consumption during scan test by appropriately ordering the scan cells. In this thesis, we use an induced activity function to measure the impact of reducing the transition density at a selected pseudo input on totally switching activity in CUT. We order the scan cells in descending order according to the values of the induced activity function. We also exploit the unspecified values in the test vectors to maximize the reduction of switching activity during scan test. Besides, layout constraint is an important consideration during ordering scan cells. Hence, we develop a procedure to order scan cell without violating layout constraint. Experimental results show that the proposed approach can reduce power consumption significantly during test.

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic 'Scan'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles