Relevant bibliographies by topics / OCST

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'OCST'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "OCST"

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Yamada, Masayuki, Tomomichi Itoh, Akira Hirao, Sei-Ichi Nakahama, and Junji Watanabe. "Side-Chain LC Block Copolymers with Well Defined Structures Prepared by Living Anionic Polymerization. 2: Effect of the Glass Transition Temperature of Amorphous Segments on the Phase Behaviour and Structure of the LC Segment." High Performance Polymers 10, no. 1 (March 1998): 131–38. http://dx.doi.org/10.1088/0954-0083/10/1/014.

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We have prepared two classes of LC diblock copolymers, OcSt-b-LC and MeStb-LC, by living anionic polymerization. These are composed of the side-chain LC polymer as one segment and two different amorphous polymers, poly(octyl styrene) (OcSt) and poly(α-methyl styrene) (MeSt), as the other segment. OcSt and MeSt segments have glass transition temperatures of −60 °C and 160 °C respectively, which are relatively lower and higher than the transition temperatures of crystal–SA (∼90 °C) and SA–isotropic (∼130 °C) in the LC segment. In OcSt-b-LC the lamellar domain size decreases gradually from that of the crystal phase to that of the isotropic phase, indicating that the global conformation of the backbone changes throughout the SA temperature region. In MeSt-b-LC, in contrast, no change in the lamellar size is observed and the crystallinity of the LC segment is reduced in comparison with that in OcSt-b-LC while the liquid crystal is well formed. Such a distinction between two copolymer systems, arising from an interplay between the LC and amorphous segments, shows that the global conformation of the backbone is significant for understanding the phase behaviour and structure of side-chain LC polymers.
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Usman, Muhammad, Wajahat Ullah Khan Tareen, Adil Amin, Haider Ali, Inam Bari, Muhammad Sajid, Mehdi Seyedmahmoudian, Alex Stojcevski, Anzar Mahmood, and Saad Mekhilef. "A Coordinated Charging Scheduling of Electric Vehicles Considering Optimal Charging Time for Network Power Loss Minimization." Energies 14, no. 17 (August 27, 2021): 5336. http://dx.doi.org/10.3390/en14175336.

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Electric vehicles’ (EVs) technology is currently emerging as an alternative of traditional Internal Combustion Engine (ICE) vehicles. EVs have been treated as an efficient way for decreasing the production of harmful greenhouse gasses and saving the depleting natural oil reserve. The modern power system tends to be more sustainable with the support of electric vehicles (EVs). However, there have been serious concerns about the network’s safe and reliable operation due to the increasing penetration of EVs into the electric grid. Random or uncoordinated charging activities cause performance degradations and overloading of the network asset. This paper proposes an Optimal Charging Starting Time (OCST)-based coordinated charging algorithm for unplanned EVs’ arrival in a low voltage residential distribution network to minimize the network power losses. A time-of-use (ToU) tariff scheme is used to make the charging course more cost effective. The concept of OCST takes the departure time of EVs into account and schedules the overnight charging event in such a way that minimum network losses are obtained, and EV customers take more advantages of cost-effective tariff zones of ToU scheme. An optimal solution is obtained by employing Binary Evolutionary Programming (BEP). The proposed algorithm is tested on IEEE-31 bus distribution system connected to numerous low voltage residential feeders populated with different EVs’ penetration levels. The results obtained from the coordinated EV charging without OCST are compared with those employing the concept of OCST. The results verify that incorporation of OCST can significantly reduce network power losses, improve system voltage profile and can give more benefits to the EV customers by accommodating them into low-tariff zones.
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Ito, Kazuki, Masahiro Uetsu, and Hiroshi Kadotani. "Validation of Oximetry for Diagnosing Obstructive Sleep Apnea in a Clinical Setting." Clocks & Sleep 2, no. 3 (August 29, 2020): 364–74. http://dx.doi.org/10.3390/clockssleep2030027.

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A large epidemiological study using oximetry to analyze obstructive sleep apnea (OSA) and metabolic comorbidities was performed in Japan; however, reliability and validity of oximetry in the Japanese population remains poorly understood. In this study, oximetry data from the epidemiological study were compared with data from clinically performed polysomnography (PSG) and out-of-center sleep testing (OCST) in epidemiological study participants who later attended our outpatient units. The oxygen desaturation index (ODI) from oximetry showed a moderate positive relationship (correlation coefficient r = 0.561, p < 0.001) with apnea/hypopnea data from PSG/OCST. The area under the receiver operating characteristic curve showed moderate accuracy of this method in the detection of moderate-to-severe or severe OSA. However, the optimal ODI thresholds to detect moderate-to-severe OSA and severe OSA were the same (ODI > 20.1). Oximetry may be a useful tool for screening moderate-to-severe or severe sleep apnea. However, it may be difficult to set an appropriate threshold to distinguish between moderate and severe sleep apnea by oximetry alone.
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Peritore, D., R. Pretagostini, L. Minieri, F. Russo, and R. Cortesini. "ORGANIZZAZIONE CENTRO-SUD TRAPIANTI (OCST): OUTCOME ANALYSIS 1999 TO MARCH 2004." Transplantation 78 (July 2004): 223. http://dx.doi.org/10.1097/00007890-200407271-00584.

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Steitz, Wolfgang, and Franz Rothlauf. "Using penalties instead of rewards: Solving OCST problems with guided local search." Swarm and Evolutionary Computation 3 (April 2012): 46–53. http://dx.doi.org/10.1016/j.swevo.2011.10.003.

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Steitz, Wolfgang, and Franz Rothlauf. "Edge Orientation and the Design of Problem-Specific Crossover Operators for the OCST Problem." IEEE Transactions on Evolutionary Computation 16, no. 1 (February 2012): 108–16. http://dx.doi.org/10.1109/tevc.2010.2093580.

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Yagi, T., S. Chiba, and H. Ito. "0618 What are the Benefits of Remote Monitoring Polysomnography." Sleep 43, Supplement_1 (April 2020): A236—A237. http://dx.doi.org/10.1093/sleep/zsaa056.615.

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Abstract Introduction The use of information and communication technology (ICT) for sleep testing is mainly aimed at improving the accuracy of out-of-center sleep testing (OCST) by remote monitoring. In this study, as the first achievement in Japan, we report the results of our sleep medical clinic and hospital unit. For the diagnosis of sleep disorders, monitoring polysomnography (PSG) attending sleep technologist is the gold standard and is positioned as Type I. On the other hand, diagnosis using OCST has become acceptable because many patients can be diagnosed quickly and cost can be reduced.When using Type II devices that measure electroencephalogram at home, the measurement accuracy is inevitable, including poor recording, because it is performed in a non-monitoring situation. As an attempt to improve this situation, our clinic and hospital unit have established a remote monitoring PSG system that can be upgraded from Type II to Type I level by remote monitoring by a sleep technologist to ensure recording accuracy. Methods During the period from April 2004 to December 2017, a total of 286 remote monitoring PSGs were performed by dedicated sleep technologists at the Ota Memorial Sleep Center for patients admitted to a private room at Ota General Hospital. Results The breakdown of the reasons for requesting remote monitoring tests is about 30% of patients scheduled to undergo surgerysuch as palatine tonsillectomy or soft palate plastic surgery the next day, and 24% of hospitalized patients with risky complications %, 17% of patients expected to have a high probability of nighttime seizures and abnormal behavior, and 15% were physically disabled or paralyzed. Conclusion Our remote monitoring PSG system is effectively used in the clinic for the general hospital for patients who need nighttime safety management and nursing management. Support non
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Kim, Jong Ryul, Kyeong-Hoon Do, Wan Young Chung, and Il Seok Ko. "A SOLUTION OF REAL-WORLD OCST PROBLEMS WITH A NEW TREE ENCODING-BASED GENETIC ALGORITHM." Cybernetics and Systems 39, no. 6 (August 2008): 603–16. http://dx.doi.org/10.1080/01969720802312504.

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Park, Joon-Ha, Zong-Tae Bae, and Jinjoo Lee. "Characteristics and Performance of Organisational Change Teams: An Empirical Study of Korean Large Firms." International Journal of Innovation Management 01, no. 02 (June 1997): 123–49. http://dx.doi.org/10.1142/s1363919697000085.

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This study explored direct relationships among top management support as the major organisational context, the characteristics of organisational change team (OCT), and OCT performance. Based on the previous studies on change agents and organisational groups, and the practices of change efforts in Korean large firms, six hypotheses were generated and tested through questionnaires culled from 58 teams among four Korean conglomerate groups. The four OCT characteristics studied were professionalism, functional diversity, team position and team size. By controlling for the group difference, it was found that the professionalism and functional diversity of OCTs were significantly correlated to managers' satisfaction with the OCTs. Beyond our expectations, strategic support of the top management had more direct effects on the performance of the OCTs than the OCT characteristics. This study suggests that getting the strong support of the top management as well as having their own professional knowledge and abilities are very important for OCTs to achieve higher performance.
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Shunmugam, Manoharan, and MRCOphth and Tom H. Williamson. "Recent Optical Coherence Tomography Imaging of Vitreomacular Disorders." US Ophthalmic Review 04, no. 01 (2011): 17. http://dx.doi.org/10.17925/usor.2011.04.01.17.

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Optical coherence tomography (OCT) has become a ubiquitous and invaluable tool in the retinal clinic as it provides the examiner with a 2D cross-section of the retina; newer machines are also able to reconstruct 3D images. The greater detail afforded by OCT scanning enhances diagnostic capabilities and advances vitreoretinal research. It has proved very useful in surgical planning and provides fine anatomical retinal detail, which can aid post-operative prognostication in certain vitreoretinal disorders. OCT operates on the same physical principles as an ultrasound scan, except it uses light as the carrier signal. First-generation OCTs are capable of resolutions only between 10 and 20μm. Second-generation OCTs improved this to 5–6μm. We await the commercial availability of third-generation and full-field OCTs, which yield resolutions as low as 1–3μm.
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Dissertations / Theses on the topic "OCST"

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Torricella, Giulia. "Bioelettronica organica: Nuovi approcci tecnologici per la stimolazione e la rilevazione della comunicazione di cellule neuronali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8520/.

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Il campo della Bioelettronica si è sviluppato a partire dal 18 secolo con l’ esperimento di Luigi Galvani che, applicando uno stimolo elettrico ai muscoli di una rana dissezionata, ne osservò il movimento. Da questo esperimento si è aperta la strada che ha portato ad oggi ad un grande sviluppo tecnologico nella realizzazione di dispositivi elettronici che permettono di offrire un miglioramento generale delle condizioni di vita. Come spesso accade con le tecnologie emergenti, i materiali sono la maggiore limitazione nello sviluppo di nuove applicazioni. Questo è certamente il caso della Bioelettronica. I materiali elettronici organici, nella forma di polimeri conduttivi, hanno mostrato di poter dotare gli strumenti elettronici di grandi vantaggi rispetto a quelli tradizionali a base di silicio, in virtù delle loro proprietà meccaniche ed elettroniche, della loro biocompatibilità e dei bassi costi di produzione. E’ da questi studi che nasce più propriamente il campo della Bioelettronica Organica, che si basa sulla applicazione di semiconduttori a base di carbonio in forma di piccole molecole coniugate e di polimeri, e del loro utilizzo nei dispositivi elettronici. Con il termine di ‘Bioelettronica organica’, quindi, si descrive l’accoppiamento tra dispositivi elettronici organici e il mondo biologico, accoppiamento che si sviluppa in due direzioni: da un lato una reazione o un processo biologico può trasferire un segnale ad un dispositivo elettronico organico, dall’altro un dispositivo elettronico organico può avviare un processo biologico.
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Guan, Guangying. "Micro-motion detection by optical coherence tomography (OCT) and its clinical applications." Thesis, University of Dundee, 2015. https://discovery.dundee.ac.uk/en/studentTheses/f2ac8e9f-aee4-4e70-9c79-de7de35fae43.

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Detection of micro-motion on biological tissues has various applications such as ultrasound elastography and magnetic resonance elastography (MRE). Ultrasound transducers, the most commonly used tool to detect endogenous and exogenous micro-motions, have a number of drawbacks: including the requirements of the physical contact with the sample and limited spatial resolution (millimetre scale). The aim of this thesis is to develop a non-contact phase-sensitive imaging technique which is suitable for functional imaging in the micron range which also has the potential for quantitative analysis of relative properties resulting from an appropriate image processing. Concerning imaging techniques, this thesis focused on optical coherence tomography (OCT) and in particular on phase-sensitive optical coherence tomography (PhS-OCT). In this thesis, a PhS-OCT system is developed for micro-motion detection and a dual camera PhS-OCT system is developed to double the imaging acquiring speed and improve the sensitivity to small phase change. Two applications of PhS-OCT combining micro-motions detection are preformed: 1) Photo-thermal OCT (PT-OCT) system is developed to detect the photo-thermal phenomenon of nanoparticles. A mathematic model is proposed to analyse and reconstruct the distribution of nanoparticles in biological tissues. 2) A quantitative 3D optical coherence elastography (OCE) system and algorithm are developed to analysis the mechanical property of tissue. A feasibility study is carried for the diagnosis of prostate cancer (PCa) using this technique. Results show that PhS-OCT is a powerful tool for the detection of micro-motions (micron range). Functional OCT based on it such as PT-OCT and OCE offers potential in diagnostic and therapeutic in clinical applications, e.g. PT-OCT can be used to detect and map the distribution and concentration of dye and drug in tissues or organs. 3D OCE can provide useful information for early localization and diagnosis of cancer.
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Liang, Kaicheng. "Forward viewing OCT endomicroscopy." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/87948.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.
"February 2014." Cataloged from PDF version of thesis.
Includes bibliographical references (pages 60-69).
A forward viewing fiber optic-based imaging probe device was designed and constructed for use with ultrahigh speed optical coherence tomography in the human gastrointestinal tract. The light source was a MEMS-VCSEL at 1300 nm wavelength running at 300 kHz sweep rate, giving an effective A-line rate of 600 kHz. Data was acquired with a 1.8 GS/s A/D card optically clocked by a maximum fringe frequency of 1 GHz. The optical beam from the probe was scanned by a freely deflecting optical fiber that was mounted proximally on a piezoelectric tubular actuator, which was electrically driven in two perpendicular dimensions to produce a spiral scan pattern. The probe has a 3.3 mm outer diameter and is intended for endoscopic imaging. Multiple optical systems were designed to enable microscopic imaging at variable fields. The probe could also be electrically zoomed by tuning the driving voltage to the piezoelectric actuator, reducing the deflection range of the scanning fiber and thus the scanned field. The optical and mechanical design of the probe was optimized for both axial and transverse compactness.
by Kaicheng Liang.
S.M.
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Adler, Desmond Christopher 1978. "Digital signal processing techniques for optical coherence tomography : OCT and OCT image enhancement." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28486.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.
Includes bibliographical references (p. 132-135).
Digital signal processing (DSP) techniques were developed to improve the flexibility, functionality, and image quality of ultrahigh resolution optical coherence tomography (OCT) systems. To reduce the dependence of OCT research systems on fixed analog electronics and to improve overall system flexibility, a digital demodulation scheme implemented entirely in software was developed. This improvement allowed rapid reconfiguration of the OCT imaging speed and source center wavelength without having to construct new analog filters and demodulators. This demodulation scheme produced a highly accurate envelope and was immune to local variations in carrier frequency. To provide an alternative contrast modality to conventional intensity-based OCT imaging, spectroscopic OCT technology was investigated. Preliminary studies on animal models were carried out, with the ultimate goal of enabling the early detection of dysplastic lesions in epithelial tissue through spectroscopic changes not visible with conventional OCT. Various spectral analysis techniques were investigated and evaluated for their ability to provide enhanced contrast of specific tissue types. Areas of concern such as red-shifting of the spectrum with increasing imaging depth, Doppler shifts induced by the optical path length scanner, and determination of an optimal spectroscopic metric were addressed. To improve the quality of ultrahigh resolution OCT images, wavelet processing techniques for speckle noise reduction were investigated. Spatially adaptive wavelet denoising techniques were compared to basic wavelet denoising techniques and time domain filtering. By using a set of image quality metrics, it was possible to quantify the effectiveness of the various filtering methods and determine an optimal
(cont.) process for removing speckle noise while maintaining feature sharpness.
by Desmond Christopher Adler.
S.M.
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Nilsson, Tommy. "Retinal Thickness in Myopes with OCT." Thesis, Linnéuniversitetet, Institutionen för naturvetenskap, NV, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-19646.

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Purpose: To investigate whether retinal thickness varies with refractive error. Also secondary to see if there is any difference in retinal thickness between the right and left eye. Methods: The inclusion criteria for the study was subjects without any pathologies, age between 18-45 and refractive error of maximum +0.75 SER and the myopia had no limit, as well as no astigmatism higher then -1.00D. Subjects, which fitted the inclusion criteria for the study, was shown to the OCT room were retinal thickness measurements were acquired first on the right and then left eye. To get the same reading area, the same setup was used and the fixation point was always centered for each patient. After all subjects had undergone the same method the results were analyzed using t-test and regression analysis. Results: The analysis showed a difference between emmetropic eyes and myopic eyes in the peripheral retinal thickness, having the myopes being significantly thinner. The inter myopic analysis showed no difference in retinal thickness in any of the points. This could however be due to the smaller sample size. The comparison between right and left eye showed a good symmetry between the two eyes both in the emmetropic and the myopic group. Conclusions: From this study we can conclude that the myopic group has a thinner peripheral retinal thickness than the emmetropic group. Central retinal thickness is not significantly different but could be due to the smaller sample size. There is no difference in retinal thickness between right and left eye.
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Koch, Klaus Peter [Verfasser]. "Lineare OCT Verfahren / Klaus Peter Koch." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2016. http://d-nb.info/1090921489/34.

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Schaack, Sofiane. "Orienting OCS with an electric field." Thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-287790.

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Gärdin, Christoffer, and George Shnouda. "Characterization of clients-side revocation checks and their security-performance tradeoffs." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177327.

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There are several different methods for checking whether certificates on the web have been revoked, timely discovery of revoked certificates are important to ensure security when authentication within the HTTPS protocol is used. These methods have both advantages and disadvantages as they can contribute to security but at the same time worsen performance on the web browsers. This thesis examines these methods in more detail to identify the pros and cons and whether it is possible to find a good tradeoff between security and performance. This is important as a user is exposed to major security flaws if the integrity of a domain cannot be verified. Our analysis includes to which extent OCSP and CRL are used, how much OCSP affects the browser Firefox's performance, and how many web servers implement methods to verify revoked certificates, such as OCSP staple and must-staple. We also compare web browsers own lists of revoked certificates and look for patterns and differences between them. The analysis shows that OCSP and CRL have largely been replaced by other methods of verifying revoked certificates such as OneCRL and CRLSet. It turned out that OneCRL and CRLSet only cover a small fraction of the total number of certificates available. Often, it takes several weeks for certificates to appear in these lists after being revoked. We also found that OCSP's impact on the web pages performance is minimal. We concluded that the existing methods for verifying revocation statuses are inadequately used by CAs, web browsers and web servers, which poses a major security risks for users. Many certificates are not checked at all. However, we believe that it is possible to increase the security without reducing performance if CAs, web browsers and web servers can collaborate in the development of improving and combining current methods for checking revoked certificates.
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Suzuki, Luis Claudio. "Desenvolvimento de biofilme formado por Candida albicans in vitro para estudo do efeito fotodinâmico." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-17112009-103750/.

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A terapia fotodinâmica, do inglês photodynamic therapy (PDT) é uma fototerapia baseada na utilização de um fotossensibilizador (FS) na presença da luz em baixa intensidade em comprimento de onda ressonante à absorção do FS e que podem sensibilizar sistemas biológicos, gerando espécies reativas de oxigênio. Estudos mostram que a PDT apresenta um efeito letal em Candida albicans. O biofilme formado por C. albicans é a causa mais freqüente de infecções associadas a cateteres, possuindo uma comprovada resistência a antifúngicos, sendo que a remoção do cateter colonizado é quase sempre necessária. No entanto, poucos trabalhos na literatura relatam o comportamento e a resposta de C. albicans organizado em biofilme frente à PDT. Os objetivos deste trabalho foram desenvolver uma metodologia para formação in vitro de biofilme de C. albicans, verificar a sensibilidade do biofilme de C. albicans frente à terapia fotodinâmica antimicrobiana utilizando como FS o azul de metileno (AM) e a hipocrelina B:La+3 e analisar o biofilme através da Tomografia de Coerência Óptica (OCT) antes e depois da PDT. Para a formação do biofilme, foram confeccionados discos de silicone elastomérico oriundos de cateteres. Os fotossensibilizadores foram diluídos em solução de PBS, sendo que o AM teve duas concentrações diferentes testadas no biofilme: 100M e 1mM e a HBLa+3 somente uma de 10M. A irradiação de ambos os corantes com os microrganismos foi feita através de dois LEDs diferentes, um vermelho com = 630nm ± 20nm e outro azul com = 460nm ± 30nm. Foi realizada uma curva de fração de sobrevivência em função do tempo de irradiação de cada amostra com biofilme e de suspensão do microrganismo em formato de leveduras para verificar a susceptibilidade destes frente à PDT. As leveduras apresentaram 100% de redução em ambos os fotossensibilizadores, porém em tempos de irradiação diferentes (30s para a HBLa+3 e 6 min para o AM na concentração de 100M). Quando a terapia foi aplicada em biofilme, o AM em 100M não apresentou nenhuma redução significativa, enquanto que em concentração de 1mM houve redução de 100% após 6 min de irradiação. Já a HBLa+3 mostrou pouca redução em biofilme na concentração de 10M (menos de 1 log de redução. Concluímos que o microrganismo C. albicans se organizou em biofilme padronizado nos discos elastoméricos oriundos de cateteres e através do OCT, o biofilme medido apresentou 110m de espessura, informando uma mudança óptica ao ser submetido pela PDT com o AM 1mM.
Photodynamic therapy (PDT) is a phototherapy based on the use of a photosensitizer (PS) in the presence of low intensity light with resonant wavelength of absorption of the PS and biological systems that can raise awareness, generating reactive oxygen species. Studies show that PDT has a lethal effect on Candida albicans. The biofilm formed by C. albicans is the cause of infections associated with medical devices such as catheters, with a proven resistance to antifungal agents, and the removal of the catheter colonized almost always is necessary. However, few studies in literature report the behavior and response of biofilm organized by C. albicans against PDT. The aims of this study were to develop a methodology for in vitro biofilm formation of C. albicans, evaluate the sensitivity of the biofilm of C. albicans to antimicrobial photodynamic therapy using PS as the methylene blue (MB) and hypocrellin B: La+3 (HBLa+3) and analyze the biofilm by Optical Coherence Tomography (OCT). For biofilm formation, discs were made from elastomeric silicone catheters. The PS were dissolved in solution of PBS, and the MB had two different concentrations tested in the biofilm: 100M and 1mM; HBLa+3 only one of 10M. The irradiation of both dyes with the microorganism was done by two different LEDs, one with red emission at = 630nm ± 20nm and the other one blue emission at = 460nm ± 30nm. We performed a curve of survival fraction versus time of irradiation of each sample with biofilm and suspension of the microorganism in the yeast form to verify the susceptibility of the front PDT. The yeast showed 100% reduction using both PS, but at different times of irradiation (30s to HBLa+3 and 6 min for the MB at 100M). When the therapy was applied in biofilm, the MB 100M did not show any significant reduction, while at concentration of 1mM was reduced by 100% after 6 min of irradiation. The HBLa+3 biofilm group showed a lower reduction in the concentration of 10M in biofilm (less than 1 log reduction). OCT was performed for visualization and measurement of the thickness of the biofilm formed. The composition of the extracellular matrix of the biofilm polymer hindered the diffusion of PS inside, requiring higher concentrations of MB to disseminate it and to obtain satisfactory reduction for PDT. HBLa+3 group, in higher concentration, formed aggregates difficulting its use for PDT. We conclude that the organism C. albicans was organized in biofilms in a standardized way using elastomeric discs from catheters and the OCT showed that the biofilm measured 110m at thickness, showing an optical change when subjected to the PDT with MB 1mM.
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Pretto, Lucas Ramos de. "Desenvolvimento de um algoritimo otimizado para caracterização de fluxos microfluídicos utilizando padrões de speckle presentes no sinal de Tomografia por Coerência Óptica." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-21052015-131941/.

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O presente trabalho abordou o sistema de Tomografia por Coerência Óptica (OCT) e sua aplicação à área de microfluídica. Para tanto, foram realizados testes de caracterização física de circuitos microfluídicos, utilizando modelos 3D (tridimensionais) construídos a partir de imagens de OCT destes circuitos. A técnica foi, assim, avaliada como potencial ferramenta de auxílio na aferição de microcanais. Indo além, este trabalho estuda e desenvolve técnicas de análise para fluxos microfluídicos, em especial técnicas baseadas no padrão de speckle. Em primeiro momento, métodos já existentes foram estudados e aprimorados, como o Speckle Variance OCT, em que foi obtido um ganho de 31% em tempo de processamento. Outros métodos, como o LASCA (Laser speckle Contrast Analysis), baseados na autocorrelação de speckle, são adaptados às imagens de OCT. Derivado do LASCA, o método de análise desenvolvido baseado na autocorrelação de intensidade motivou o desenvolvimento de um arranjo de OCT próprio e software de aquisição customizado, com taxa de amostragem da ordem de 8 kHz. O método proposto foi, então, capaz de distinguir fluxos volumétricos variados, e seus limites de detecção foram testados, comprovando sua viabilidade de aplicação para análise de movimento browniano e fluxos volumétricos abaixo de 10 μl/min.
This work discusses the Optical Coherence Tomography system (OCT) and its application to the microfluidics area. To this end, physical characterization of microfluidic circuits were performed using 3D (three-dimensional) models constructed from OCT images of such circuits. The technique was thus evaluated as a potential tool to aid in the inspection of microchannels. Going further, this workpaper studies and develops analytical techniques for microfluidic flow, in particular techniques based on speckle pattern. In the first instance, existing methods were studied and improved, such as Speckle Variance - OCT, where a gain of 31% was obtained in processing time. Other methods, such as LASCA (Laser Speckle Contrast Analysis), based on speckle autocorrelation, are adapted to OCT images. Derived from LASCA, the developed analysis technique based on intensity autocorrelation motivated the development of a custom OCT system as well as an optimized acquisition software, with a sampling rate of 8 kHz. The proposed method was, then, able to distinguish different flow rates, and limits of detection were tested, proving its feasibility for implementation on Brownian motion analysis and flow rates below 10 μl/min.
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Books on the topic "OCST"

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Yoshimura, Nagahisa, and Masanori Hangai. OCT Atlas. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1.

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Patel, Jeram. Jeram Patel: 9 Oct.-21 Oct. 06. New Delhi: Palette Art Gallery, 2006.

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Áine, Ní Chonghaile, and Tiobraid Árann ag Labhairt, eds. Saoirseacht nó sclábha ́ocht? An tAonach: Tiobraid Árann ag Labhairt teo, 1994.

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Lumbroso, Bruno. Practical retinal OCT. 2nd ed. New Delhi: Jaypee Brothers Medical Publishers, 2015.

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Jang, Ik-Kyung, ed. Cardiovascular OCT Imaging. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-10801-8.

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Jang, Ik-Kyung, ed. Cardiovascular OCT Imaging. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-25711-8.

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Cunningham, I. C. H. The OCTS Superbase 4 workbook. Oxford: Oxford Computer TrainingServices, 1991.

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development, Organisation for economic co-operation and. Studi Ocse Sul Turismo: Italia. Washington: Organization for Economic Cooperation & Development, 2011.

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Horwitz, James L. [Radiative transfer models]: [final report, Oct. 1990 - Oct. 1992]. [Washington, DC: National Aeronautics and Space Administration, 1992.

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Kallat, Reena Saini. Black flute: 8th Oct-23rd Oct 2004, Gallery Chemould. Mumbai: Gallery Chemould, 2005.

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Book chapters on the topic "OCST"

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Rothlauf, Franz. "Biased Modern Heuristics for the OCST Problem." In Natural Computing Series, 185–220. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-540-72962-4_8.

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Hajizadeh, Fedra, and Nazanin Ebrahimiadib. "OCT Angiography (OCT-A)." In Diagnostics in Ocular Imaging, 421–28. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54863-6_13.

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Yoshimura, Nagahisa, and Masanori Hangai. "The basis of OCT interpretation." In OCT Atlas, 1–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_1.

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Yoshimura, Nagahisa, and Masanori Hangai. "Retinal detachment." In OCT Atlas, 335–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_10.

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Yoshimura, Nagahisa, and Masanori Hangai. "Lesion morphology index based on OCT." In OCT Atlas, 341–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_11.

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Yoshimura, Nagahisa, and Masanori Hangai. "Vitreoretinal interface pathology." In OCT Atlas, 21–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_2.

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Yoshimura, Nagahisa, and Masanori Hangai. "Diabetic retinopathy." In OCT Atlas, 77–102. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_3.

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Yoshimura, Nagahisa, and Masanori Hangai. "Retinal vascular diseases." In OCT Atlas, 103–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_4.

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Yoshimura, Nagahisa, and Masanori Hangai. "Central serous chorioretinopathy." In OCT Atlas, 133–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_5.

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Yoshimura, Nagahisa, and Masanori Hangai. "Age-related macular degeneration." In OCT Atlas, 149–228. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-38625-1_6.

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Conference papers on the topic "OCST"

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Steitz, Wolfgang, and Franz Rothlauf. "New insights into the OCST problem." In the 11th Annual conference. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1569901.1569951.

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Steitz, Wolfgang, and Franz Rothlauf. "Solving OCST problems with problem-specific guided local search." In the 12th annual conference. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1830483.1830541.

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Kim, Jong Ryul, and Do-Un Jeong. "Solving Reliable OCST Problems through Spanning Tree-Based Genetic Algorithm." In 2008 Third International Conference on Convergence and Hybrid Information Technology (ICCIT). IEEE, 2008. http://dx.doi.org/10.1109/iccit.2008.307.

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Kim, Jong Ryul, Kyeong-Hoon Do, and Wan Young Chung. "A Solution of Real-World OCST Problems through GA with a New Tree Encoding." In 2007 International Conference on Convergence Information Technology (ICCIT 2007). IEEE, 2007. http://dx.doi.org/10.1109/iccit.2007.214.

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Kim, Jong Ryul, Kyeong-Hoon Do, and Wan Young Chung. "A Solution of Real-World OCST Problems through GA with a New Tree Encoding." In 2007 International Conference on Convergence Information Technology (ICCIT 2007). IEEE, 2007. http://dx.doi.org/10.1109/iccit.2007.4420291.

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Baheri, Ali, Praveen Ramaprabhu, and Christopher Vermillion. "Iterative In-Situ 3D Layout Optimization of a Reconfigurable Ocean Current Turbine Array Using Bayesian Optimization." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5230.

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In this paper, we present an online approach for optimizing the 3D layout of an ocean current turbine (OCT) array. Unlike towered turbines, most OCT concepts for Gulf Stream energy harvesting involve tethered systems. The replacement of towers with tethers provides the opportunity for OCTs to adjust their locations within some domain by paying out/in tether to adjust depth and manipulating control surfaces (elevators and rudders) to adjust longitudinal and lateral positions. The ability to adjust the OCT positions online provides the capacity to reconfigure the array layout in response to changing flow conditions; however, successful online array layout reconfiguration requires optimization schemes that are not only effective but also enable fast convergence to the optimal configuration. To address the above needs, we present a reconfigurable layout optimization algorithm with two novel features. First, we describe the location of each turbine through a small set of basis parameters; the number of basis parameters does not grow with increasing array size, thereby leading to an optimization that is not only computationally tractable but is also highly scalable. Secondly, we use Bayesian Optimization to optimize these basis parameters. Bayesian Optimization is a very powerful iterative optimization technique that, at every iteration, fuses a best-guess model of a complex function (array power as a function of basis parameters, in our case) with a characterization of the model uncertainty in order to determine the next evaluation point. Using a low-order analytical wake interaction model, we demonstrate the effectiveness of the proposed optimization approach for various array sizes.
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Jaygarl, Hojun, Sunghun Kim, Tao Xie, and Carl K. Chang. "OCAT." In the 19th international symposium. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1831708.1831729.

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Erdeniz, Seda Polat, and Alexander Felfernig. "OCSH." In the 8th International Conference. New York, New York, USA: ACM Press, 2018. http://dx.doi.org/10.1145/3200842.3200858.

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Sakata, Yoshitaro, Souichi Saeki, Takashi Saito, Takafumi Hiro, and Masunori Matsuzaki. "Application Study of Biomechanical Estimator Using Optical Coherence Straingraphy to Atherosclerosis." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12073.

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The authors have developed Optical Coherence Straingraphy (OCS) as a visualizing technique of tissue strain distribution, by means of deformation of speckle pattern obtained by Optical Coherence Tomography. In this study, ex vivo OCS imaging experiment was carried out using atherosclerotic plaques of WHHL rabbit, compared with simulated results of histologically image-based FEM. Consequently, strain pattern obtained by OCS has qualitative agreement with simulated results. Therefore, it was confirmed that OCS could diagnose biomechanical properties of atherosclerotic plaque tomographically.
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Sakata, Yoshitaro, Souichi Saeki, Takashi Saito, and Junji Ohgi. "Study on Nondestructive Tomographic Visualization of Plane-Woven Fiber-Reinforced Rubber Using Optical Coherence Straingraphy." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40683.

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Authors proposed Optical Coherence Straingraphy (OCS), which could visualize micromechanical information, e.g. strain, tomographically and non-destructively. This method can execute the speckle deformation analysis based on cross-correlation technique of synthetic images obtained before and after loading by Optical Coherence Tomography. In this study, applying OCS to composite materials, e.g. plain-woven fiber-reinforced rubber, the experimental feasibility study was carried out, compared with numerical simulated results by image-based FEM. Consequently, OCS could discover the strain concentration in the vicinity of the intersection of orthogonally oriented fiber bundles. It was confirmed that tomographic strain distribution had qualitative agreement with the simulated one. Therefore, OCS was verified to provide mechanical properties non-destructively as internal strain distribution at the micro scale resolution.
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Reports on the topic "OCST"

1

Gould, G. J., R. M. Karpas, and D. L. Slitor. OCS National Compendium. Office of Scientific and Technical Information (OSTI), June 1991. http://dx.doi.org/10.2172/6375019.

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Durkin, Dennis. Manufacturing Process Development For the OCSW Warhead. Fort Belvoir, VA: Defense Technical Information Center, August 2001. http://dx.doi.org/10.21236/ada385925.

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Sahni, M., ed. Online Certificate Status Protocol (OCSP) Nonce Extension. RFC Editor, November 2020. http://dx.doi.org/10.17487/rfc8954.

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Reichel, Ina. Study of the OCS6 Lattice Using Frequency Maps. Office of Scientific and Technical Information (OSTI), January 2007. http://dx.doi.org/10.2172/902149.

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Myers, M., and H. Tschofenig. Online Certificate Status Protocol (OCSP) Extensions to IKEv2. RFC Editor, February 2007. http://dx.doi.org/10.17487/rfc4806.

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Upton, Jaki F., and Steven L. Stein. Responder Technology Alert Monthly (Oct-Nov 2014). Office of Scientific and Technical Information (OSTI), January 2015. http://dx.doi.org/10.2172/1178865.

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Hu, Jonathan J. ECP ALCC Quarterly Report (Oct-Dec 2017). Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1513455.

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Trim, M., Matthew Murray, and C. Crane. Modernization and structural evaluation of the improved Overhead Cable System. Engineer Research and Development Center (U.S.), March 2021. http://dx.doi.org/10.21079/11681/40025.

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A modernized Overhead Cable System prototype for a 689 ft (210 m) Improved Ribbon Bridge crossing was designed, assembled, and structurally tested. Two independent structural tests were executed, i.e., a component-level compression test of the BSS tower was performed to determine its load capacity and failure mode; and a system-level ‘dry’ test of the improved OCS prototype was conducted to determine the limit state and failure mode of the entire OCS. In the component-level compression test of the BSS tower, the compressive capacity was determined to be 102 kips, and the failure mode was localized buckling in the legs of the tower section. During system-level testing, the prototype performed well up to 40.5 kips of simulated drag load, which corresponds to a uniformly distributed current velocity of 10.7 ft/s. If a more realistic, less conservative parabolic velocity distribution is assumed instead, the drag load for an 11 ft/s current is 21.1 kips. Under this assumption, the improved OCS prototype has a factor of safety of 1.9, based on a 689-ft crossing and 11-ft/s current. The OCS failed when one of the tower guy wires pulled out of the ground, causing the tower to overturn.
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Myers, M., R. Ankney, A. Malpani, S. Galperin, and C. Adams. X.509 Internet Public Key Infrastructure Online Certificate Status Protocol - OCSP. RFC Editor, June 1999. http://dx.doi.org/10.17487/rfc2560.

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Santesson, S., M. Myers, R. Ankney, A. Malpani, S. Galperin, and C. Adams. X.509 Internet Public Key Infrastructure Online Certificate Status Protocol - OCSP. RFC Editor, June 2013. http://dx.doi.org/10.17487/rfc6960.

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