Relevant bibliographies by topics / HDRB

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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 'HDRB'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "HDRB"

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Cancellara, Donato, Fabio de Angelis, and Mario Pasquino. "Influence of the Strain Hardening of HDRBs in the Evaluation of the Seismic Response of a RC Base Isolated Structure." Advanced Materials Research 602-604 (December 2012): 1546–54. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1546.

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In this paper we have analyzed the influence of the strain hardening behavior of High Damping Rubber Bearings (HDRBs) adopted for a base isolation system of a Reinforced Concrete (RC) isolated structure. For the modeling of the rubber isolators we have adopted an evolution of the Bouc-Wen’s hysteretic model taking into account the incremental hardening effect which appears when the shear strain of the HDRB exceeds the limit value around 100% usually adopted in design practice. The incremental hardening effect is sometimes neglected in the design but it is an important aspect because it ensures a seismic protection of the base isolated structure also in presence of exceptional seismic events for intensity or frequency content. In this paper we have highlighted the significant influence of this phenomenon in the seismic response of the isolated structure by reporting the cyclic behavior of a HDRB respectively neglecting and considering this aspect.
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Islam, A. B. M. Saiful. "DIMINISHING SEISMIC EFFECT ON BUILDINGS USING BEARING ISOLATION." IIUM Engineering Journal 19, no. 1 (June 1, 2018): 59–71. http://dx.doi.org/10.31436/iiumej.v19i1.844.

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Adopting suitable seismic protection techniques is presently a foremost concern worldwide and has become a governing principle in the growing construction industry globally. Thus, a rapid upsurge in infrastructure development in seismic-prone areas requires proper treatment for building structures. Therefore, the aim of the study is to incorporate a rubber bearing isolation device in a building base in order to diminish the seismic effect on the superstructure. The changes of structural parameters and responses of fixed-based buildings for applying High Damping Rubber Bearing (HDRB) are investigated under site-specific ground excitation. Twenty representative buildings have been used to examine the responses employing four types of HDRB systems. The study reveals that the HDRB makes the structure more flexible, offering reduced structural responses. The introduction of HDRB may help to decrease floor moment by 31~55%, which can allow the structures to withstand comparatively high seismic tremors safely and efficiently. The base isolated structures experience significant lateral shift between 87.15 and 130.15 mm, and relative floor displacement is below 3% because of additional flexibility. The effective inertia height for the BI buildings remains under two-thirds of building elevation showing triangular distribution concentrating to the top story level. The reduction in forces, moments, and relative displacements of the structural members by applying HDRB can ensure economic design and higher structural safety against seismic excitation. ABSTRAK: Penerapan teknik yang sesuai bagi pelindungan gelombang seismos menjadi penekanan semasa di seluruh dunia dan telah menjadi prinsip penentu dalam industri pembinaan secara global. Oleh itu, kenaikan yang cepat dalam pembangunan infrastuktur dalam kawasan terdedah kepada gelombang seismos memerlukan penyelenggaraan yang betul bagi struktur bangunan. Jadi, matlamat kajian ini adalah bagi menggabungkan getah alat pengandar asing dalam teras bangunan bagi mengurangkan kesan seismos pada struktur asas. Perubahan pada parameter struktur dan tindak balas tapak-tetap bangunan bagi penggunaan teknik High Damping Rubber Bearing (HDRB) dikaji di bawah setiap kenaikan getaran gelombang sebenar bawah tanah. Dua puluh bangunan telah digunakan bagi menilai tindak balas terhadap penggunaan empat jenis sistem HDRB. Kajian menunjukkan HDRB membuatkan struktur lebih fleksibel, dan mengurangkan tindak balas terhadap struktur. Penggunaan HDRB dalam pembangunan membantu mengurangkan momen lantai sebanyak 31~55%, di mana struktur bangunan lebih tahan terhadap gegaran tinggi secara selamat dan berkesan. Struktur asas yang terasing mengalami peralihan sisi yang ketara antara 87.15 dan 130.15 mm, dan anjakan lantai relatif di bawah 3% dengan penambahan sistem fleksibel ini. Ketinggian inertia berkesan bagi bangunan BI kekal di antara dua pertiga ketinggian bangunan. Ini menunjukkan pengagihan segitiga tertumpu pada aras atas bangunan. Pengurangan pada daya, momen dan perubahan relatif struktur menggunakan HDRB dapat memastikan reka bentuk lebih ekonomi dan selamat pada bangunan tinggi daripada sebarang gelombang seismos.
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Braga, Franco, Marco Faggella, Rosario Gigliotti, and Michelangelo Laterza. "Nonlinear Dynamic Response of HDRB and Hybrid HDRB-Friction Sliders Base Isolation Systems." Bulletin of Earthquake Engineering 3, no. 3 (December 2005): 333–53. http://dx.doi.org/10.1007/s10518-005-1242-2.

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Maia, M. A., P. Novaes, A. C. Pellizzon, and R. Ferrigno. "High dose rate post-operative brachytherapy and external beam radiotherapy for uterine sarcomas." Journal of Clinical Oncology 24, no. 18_suppl (June 20, 2006): 15027. http://dx.doi.org/10.1200/jco.2006.24.18_suppl.15027.

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15027 Background: Uteine sarcoma (US) generally needs an aggressive approach with surgical cytoreduction at the time of initial diagnosis with maximum debulking of tumor. This offers the possibility of prolonged survival or cure. The need for adjuvant radiotherapy is not well established for US. Methods: 25 patients presenting completely ressected US were treated from November, 1992 to June, 2003. All the patients had a multidisciplinary approach with surgery, external beam radiation therapy (EBRT) given in a four- fields “box” technique, and high dose rate brachytherapy (HDRB), using either colpostats or vaginal cylinders with diameters ranging from 2.5 to 4 cm. The entire vaginal length treated with HDRB was 2 cm in all cases. Results: The median age of patients was 62 years (range 39–84). The EBRT dose prescription ranged from 40 Gy to 50,4 Gy (median 48 Gy). HDRB was given concurrent to EBRT in 14 patients (56%). The HDRB for the remaining patients started in median interval of 34 days (range 5–99 days) after the completion of EBRT. The median BED for hole treatment was 91.5 Gy10 (range 85.6 Gy10–97.9 Gy10), with a standard deviation of 3.7. The 10- year actuarial disease free and overall survivals were and 42.2% and 63.4%, respectively. On univariate analysis predictive factors for disease free survival (DFS) were age at initial presentation (p = 0.0268), parity (p = 0.0441), tumor grade (p = 0.0095), cervical or vaginal invasion (p = 0.0014) and node dissection at time of surgery (p = 0.0471). On multivariate analysis the only predictive factor was cervical or vaginal invasion (p = 0.048), hazard ratio of 4.7. Conclusion: Our small and heterogeneous group of patients analyzed precludes any definitive conclusions regarding the impact of HDRB combined to EBRT on recurrence or survival of the patients. As US are aggressive tumors, it is quite likely that neither radiotherapy nor chemotherapy alone will appreciably improve survival. If we assume that adjuvant radiation therapy provides better locoregional tumor control, hematogenous metastases probably will assume an even greater proportion of treatment failures. No significant financial relationships to disclose.
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Kragelj, Borut. "Obstructive urination problems after high-dose-rate brachytherapy boost treatment for prostate cancer are avoidable." Radiology and Oncology 50, no. 1 (February 16, 2016): 94–103. http://dx.doi.org/10.1515/raon-2015-0010.

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AbstractBackgroundAiming at improving treatment individualization in patients with prostate cancer treated with combination of external beam radiotherapy and high-dose-rate brachytherapy to boost the dose to prostate (HDRB-B), the objective was to evaluate factors that have potential impact on obstructive urination problems (OUP) after HDRB-B.Patients and methodsIn the follow-up study 88 patients consecutively treated with HDRB-B at the Institute of Oncology Ljubljana in the period 2006-2011 were included. The observed outcome was deterioration of OUP (DOUP) during the follow-up period longer than 1 year. Univariate and multivariate relationship analysis between DOUP and potential risk factors (treatment factors, patients’ characteristics) was carried out by using binary logistic regression. ROC curve was constructed on predicted values and the area under the curve (AUC) calculated to assess the performance of the multivariate model.ResultsAnalysis was carried out on 71 patients who completed 3 years of follow-up. DOUP was noted in 13/71 (18.3%) of them. The results of multivariate analysis showed statistically significant relationship between DOUP and anti-coagulation treatment (OR 4.86, 95% C.I. limits: 1.21-19.61, p = 0.026). Also minimal dose received by 90% of the urethra volume was close to statistical significance (OR = 1.23; 95% C.I. limits: 0.98-1.07, p = 0.099). The value of AUC was 0.755.ConclusionsThe study emphasized the relationship between DOUP and anticoagulation treatment, and suggested the multivariate model with fair predictive performance. This model potentially enables a reduction of DOUP after HDRB-B. It supports the belief that further research should be focused on urethral sphincter as a critical structure for OUP.
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Cury, F. L., M. Duclos, A. G. Aprikian, H. Patrocinio, W. Kassouf, G. Shenouda, S. Faria, M. David, and L. Souhami. "Single fraction high-dose-rate brachytherapy and hypofractionated external beam radiation therapy in the treatment of intermediate-risk prostate cancer: Long-term results." Journal of Clinical Oncology 29, no. 7_suppl (March 1, 2011): 83. http://dx.doi.org/10.1200/jco.2011.29.7_suppl.83.

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83 Background: We present the long-term results of a cohort of patients with intermediate-risk prostate cancer (PC) treated with single fraction high-dose-rate brachytherapy (HDRB) combined with hypofractionated external beam radiation therapy (HRT). Methods: Patients with intermediate-risk PC were treated exclusively with HDRB and HRT. HDRB delivered a dose of 10 Gy to the prostate gland and HRT consisted of 50 Gy delivered in 20 daily fractions. The planning target volume was the prostate gland with a 1 cm margin all around. The first 121 consecutive patients with a minimum of 2 years post-treatment follow-up were assessed for acute and chronic toxicity and disease control. Results: The median follow-up was 62.8 months. No acute grade III or higher toxicities were seen. Grade II late GI toxicity was seen in 9 patients (7.4%) and grade III in 2 (1.6%). Grade 3 GU toxicity was seen in 2 patients (1.6%), both with urinary obstructive symptoms requiring catheterization. A repeat biopsy was offered to the first 58 consecutively treated patients, and 44 patients agreed with the procedure. A negative biopsy was found in 40 patients (91%). The biochemical relapse-free survival rate at 5 and 8 years were 90.7% and 81.4%, with 13 patients presenting biochemical failure. Among them, nine were diagnosed with distant metastasis. Prostate cancer-specific and overall survival rates at 8 years were 100% and 95.5%, respectively. Conclusions: Our program of HDRB and HRT is well tolerated, with acceptable toxicity rates. Furthermore, results from re-biopsies revealed an elevated rate of local control. These results are encouraging and confirm that the use of conformal RT techniques, adapted to specific biological features, have the potential to improve the therapeutic ratio in intermediate risk PC patients. No significant financial relationships to disclose.
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Markou, Athanasios A., and George D. Manolis. "Energy and Transmissibility in Nonlinear Viscous Base Isolators." Journal of Theoretical and Applied Mechanics 46, no. 3 (September 1, 2016): 17–34. http://dx.doi.org/10.1515/jtam-2016-0014.

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Abstract High damping rubber bearings (HDRB) are the most commonly used base isolators in buildings and are often combined with other systems, such as sliding bearings. Their mechanical behaviour is highly nonlinear and dependent on a number of factors. At first, a physical process is suggested here to explain the empirical formula introduced by J.M. Kelly in 1991, where the dissipated energy of a HDRB under cyclic testing, at constant frequency, is proportional to the amplitude of the shear strain, raised to a power of approximately 1.50. This physical process is best described by non-Newtonian fluid behaviour, originally developed by F.H. Norton in 1929 to describe creep in steel at high-temperatures. The constitutive model used includes a viscous term, that depends on the absolute value of the velocity, raised to a non-integer power. The identification of a three parameter Kelvin model, the simplest possible system with nonlinear viscosity, is also suggested here. Furthermore, a more advanced model with variable damping coefficient is implemented to better model in this complex mechanical process. Next, the assumption of strain-rate dependence in their rubber layers under cyclic loading is examined in order to best interpret experimental results on the transmission of motion between the upper and lower surfaces of HDRB. More specifically, the stress-relaxation phenomenon observed with time in HRDB can be reproduced numerically, only if the constitutive model includes a viscous term, that depends on the absolute value of the velocity raised to a non-integer power, i. e., the Norton fluid previously mentioned. Thus, it becomes possible to compute the displacement transmissibility function between the top and bottom surfaces of HDRB base isolator systems and to draw engineering-type conclusions, relevant to their design under time-harmonic loads.
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Ehrenfeld, Nicole, Gloria J. Levicán, and Pilar Parada. "Heterodisulfide Reductase from Acidithiobacilli is a Key Component Involved in Metabolism of Reduced Inorganic Sulfur Compounds." Advanced Materials Research 825 (October 2013): 194–97. http://dx.doi.org/10.4028/www.scientific.net/amr.825.194.

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Heterodisulfide reductase (Hdr), is an iron-sulfur protein which in anaerobic methanogenic archaea catalyzes the reduction of the disulphide bond between coenzyme M and coenzyme B and is coupled to methane formation. In aerobic acidophilic chemolithotrophic bacteria (e.g., biomining bacteria) the function of this enzyme is unclear. Inspection of the genomic sequences of Acidithiobacillus ferrooxidans DSM 16786 and Acidithiobacillus thiooxidans DSM 17318 and reverse transcriptase-PCR results revealed a cluster of six co-transcribed genes, hdrC1, hdrB1, hdrA, orf1, hdrC2 and hdrB2, encoding proteins with high similarity to catalytic Hdr subunits. Additionally, microarray expression profiling and quantitative RT-PCR experiments demonstrated that the hdr genes of A.ferrooxidans and A. thiooxidans were highly expressed when bacteria are grown in the presence of sulfur and tetrathionate. Moreover, hdr genes in A. ferrooxidans were greatly up-regulated when this microorganism was grown in sulfur compared to ferrous medium. These results strongly support a role for Hdr in oxidative metabolism of reduced sulfur compounds in aerobic chemolithotrophic bacteria.
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Vatanshenas, Ali, Takahiro Mori, and Nobuo Murota. "Structural rehabilitation using high damping rubber bearing (HDRB)." Bulletin of the New Zealand Society for Earthquake Engineering 54, no. 1 (March 1, 2021): 49–57. http://dx.doi.org/10.5459/bnzsee.54.1.49-57.

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High damping rubber bearings show highly nonlinear stress-strain behaviour. Deformation-history integral (DHI) model which can estimate small strain stiffness degradation and nonlinear plasticity via a relatively simple innovative formulation is implemented in this study to model HDRB as the rehabilitation method for a seismically vulnerable building. Considered structure in this study is a three-dimensional, four-story steel frame residential building with a concentrically braced system. Nonlinear direct integration time history analysis and plastic hinges approach were implemented to evaluate structural behaviour of considered structure. It was observed that structural responses enhanced significantly after rehabilitation. Absolute maximum base shear values decreased 61.8% and 92.2% in the worst and best cases, respectively. Most of structural elements remained elastic after rehabilitation and required performance level was satisfied.
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Clemente, Paolo, Giovanni Bongiovanni, Giacomo Buffarini, Fernando Saitta, Maria Gabriella Castellano, and Federico Scafati. "Effectiveness of HDRB isolation systems under low energy earthquakes." Soil Dynamics and Earthquake Engineering 118 (March 2019): 207–20. http://dx.doi.org/10.1016/j.soildyn.2018.12.018.

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Dissertations / Theses on the topic "HDRB"

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Monti, Diego. "Analisi del funzionamento dei dispositivi di isolamento sismico e applicazione progettuale ad un edificio in cemento armato." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8105/.

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La tesi ha l'obiettivo di studiare la tecnica di controllo passivo dell'isolamento sismico, comprenderne il funzionamento e applicarla ad un caso di studio (nello specifico un fabbricato ad uso civile abitazione costituito da 7 piani fuori terra) svolgendo le verifiche previste dal D.M. 14/01/08 e dalla Circolare 02/02/2009-
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Togninelli, Gianluca. "Isolamento alla base di un edificio residenziale." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amslaurea.unibo.it/1678/.

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L’isolamento alla base è una tecnica grazie alla quale una struttura è protetta dagli effetti di danneggiamento dei terremoti grazie all’istallazione alla base della struttura di elementi flessibili che aumentano il periodo fondamentale della struttura fino ad un valore sufficientemente lontano dal periodo dominante del sisma atteso, oppure grazie ad elementi scorrevoli che entrano in funzione quando i carichi laterali superano un livello predefinito. In questo modo, le deformazioni indotte da un sisma si ritroveranno principalmente al livello di questi elementi flessibili o scorrevoli e la struttura si muoverà essenzialmente come un corpo rigido.
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Griffiths, David John. "Developmemt of High Speed High Dynamic Range Videography." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/74990.

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High speed video has been a significant tool for unraveling the quantitative and qualitative assessment of phenomena that is too fast to readily observe. It was first used in 1852 by William Henry Fox Talbot to settle a dispute with reference to the synchronous position of a horse's hooves while galloping. Since that time private industry, government, and enthusiasts have been measuring dynamic scenarios with high speed video. One challenge that faces the high speed video community is the dynamic range of the sensors. The dynamic range of the sensor is constrained to the bit depth of the analog to digital converter, the deep well capacity of the sensor site, and baseline noise. A typical high speed camera can span a 60 dB dynamic range, 1000:1, natively. More recently the dynamic range has been extended to about 80 dB utilizing different pixel acquisition methods. In this dissertation a method to extend the dynamic range will be presented and demonstrated to extend the dynamic range of a high speed camera system to over 170 dB, about 31,000,000:1. The proposed formation methodology is adaptable to any camera combination, and almost any needed dynamic range. The dramatic increase in the dynamic range is made possible through an adaptation of the current high dynamic range image formation methodologies. Due to the high cost of a high speed camera, a minimum number of cameras are desired to form a high dynamic range high speed video system. With a reduced number of cameras spanning a significant range, the errors on the formation process compound significantly relative to a normal high dynamic range image. The increase in uncertainty is created from the lack of relevant correlated information for final image formation, necessitating the development of a new formation methodology. In the proceeding text the problem statement and background information will be reviewed in depth. The development of a new weighting function, stochastic image formation process, tone map methodology, and optimized multi camera design will be presented. The proposed methodologies' effectiveness will be compared to current methods throughout the text and a final demonstration will be presented.
Ph. D.
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Burgisser, Alain. "HDR." Habilitation à diriger des recherches, Université d'Orléans, 2009. http://tel.archives-ouvertes.fr/tel-00447580.

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La Volcanologie moderne utilise des approches expérimentales, de terrain et théoriques pour mieux comprendre des phénomènes volcaniques critiques. Ces différents angles sont nécessaires en raison de l'extrême variation des échelles impliquées : des bulles de gaz de moins d'un millimètre libérant le gaz générant des panaches explosifs de plusieurs kilomètres de haut. La physique multiphasée, qui a pour objet d'étude l'écoulement de mixtures réactives de fluide et de particules, a permis des avancées dans l'unification de ces échelles. En combinant des lois à petite échelle, comme la croissance d'une bulle, des propriétés nouvelles émergent des simulations numériques, comme la ségrégation des bulles dans un conduit volcanique. De telles propriétés émergentes sont souvent valides à de grandes échelles et peuvent parfois être testées dans les systèmes naturels. La physique multiphasée reste cependant très jeune: les expérimentalistes qui déterminent les lois constitutives des systèmes les plus simples, les modélisateurs qui assemblent ces lois dans des modèles numériques complexes aux propriétés émergentes et les volcanologues de terrain qui mesures ces propriétés n'ont pas toujours le langage commun permettant de confronter leurs découvertes. Mes travaux ont eu pour but de trouver ce langage commun afin de faciliter l'intégration de nos connaissances sur les volcans. Cette intégration, renforcée dans le futur, pourrait ouvrir la possibilité d'unification de ces sous domaines. Allons-nous vers une unification de la Volcanologie ?
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Kremer, Laurent. "HDR." Habilitation à diriger des recherches, Université Montpellier II - Sciences et Techniques du Languedoc, 2007. http://tel.archives-ouvertes.fr/tel-00259336.

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Fernlund, Fredrik, and Markus Koskinen. "HDR in production." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95329.

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HDR (High Dynamic Range) är en teknik som gör det möjligt att fånga in ett större dynamiskt omfång en vad en vanlig bild skulle klara av. Användningsområdena för sådana HDR-bilder är många men företag inom mspel- och film- och visualiseringsindustrin använder ofta bilderna för virtuell ljussättning, däribland Syndicate Entertainment. Det är ett filmproduktionsbolag beläget i Stockholm där examensarbetet delvis är utfört. Idén bakom examensarbetet är att den komplicerade och långsamma processen att skapa HDR-bilderna bör kunna effektiviseras. En utförd enkätundersökning ligger tillsammans med litteraturstudier och kontakt med handledare på företaget och skolan som grund för en framtagen arbetsgång. Arbetsgången är den kedja av processer som krävs för att skapa en HDR-bild och vidare en ljusmapp. Denna arbetsgång granskas kritiskt där förslag på förbättringar redovisas. Förutom granskningen har en demonstrationsapplikation utvecklats. Det finns två syften med denna applikation. Syftena är dels att tillgodose företagets önskemål om att erhålla en applikation som går att använda i praktiken, dels för att realisera och testa några av de framtagna effektiviseringsteorierna.
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Vančura, Jan. "Tone-mapping HDR obrazů." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237159.

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This thesis concerns with the introduction to the problematics of images with high dynamic range (HDR) and possibilities of HDR images compression options for display on devices with a low dynamic range (LDR). In the introduction is described historical evolution of recording of reality. It is focusing towards point of view of physics, human visual perception and digital recording. There are described the ways of generating and holding of HDR images. The thesis is corncerned to the techniques of HDR compression, it means the tone-mapping. The different techniques of tone-mapping are explained and specific aproach is targeted to the gradient domain high dynamic range compresion.
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Bonnard, Jennifer. "Génération d'images 3D HDR." Thesis, Reims, 2015. http://www.theses.fr/2015REIMS014/document.

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L’imagerie HDR et l’imagerie 3D sont deux domaines dont l’évolution simultanée mais indépendante n’a cessé de croître ces dernières années. D’une part, l’imagerie HDR (High Dynamic Range) permet d’étendre la gamme dynamique de couleur des images conventionnelles dites LDR (Low Dynamic Range). D’autre part, l’imagerie 3D propose une immersion dans le film projeté avec cette impression de faire partie de la scène tournée. Depuis peu, ces deux domaines sont conjugués pour proposer des images ou vidéos 3D HDR mais peu de solutions viables existent et aucune n’est accessible au grand public. Dans ce travail de thèse, nous proposons une méthode de génération d’images 3D HDR pour une visualisation sur écrans autostéréoscopiques en adaptant une caméra multi-points de vue à l’acquisition d’expositions multiples. Pour cela, des filtres à densité neutre sont fixés sur les objectifs de la caméra. Ensuite, un appareillement des pixels homologues permet l’agrégation des pixels représentant le même point dans la scène acquise. Finalement, l’attribution d’une valeur de radiance est calculée pour chaque pixel du jeud’images considéré par moyenne pondérée des valeurs LDR des pixels homologues. Une étape supplémentaire est nécessaire car certains pixels ont une radiance erronée. Nous proposons une méthode basée surla couleur des pixels voisins puis deux méthodes basées sur la correction de la disparité des pixels dontla radiance est erronée. La première est basée sur la disparité des pixels du voisinage et la seconde sur la disparité calculée indépendamment sur chaque composante couleur. Ce pipeline permet la générationd’une image HDR par point de vue. Un algorithme de tone-mapping est ensuite appliqué à chacune d’elles afin qu’elles puissent être composées avec les filtres correspondants à l’écran autostéréoscopique considéré pour permettre la visualisation de l’image 3D HDR
HDR imaging and 3D imaging are two areas in which the simultaneous but separate development has been growing in recent years. On the one hand, HDR (High Dynamic Range) imaging allows to extend the dynamic range of traditionnal images called LDR (Low Dynamic Range). On the other hand, 3Dimaging offers immersion in the shown film with the feeling to be part of the acquired scene. Recently, these two areas have been combined to provide 3D HDR images or videos but few viable solutions existand none of them is available to the public. In this thesis, we propose a method to generate 3D HDR images for autostereoscopic displays by adapting a multi-viewpoints camera to several exposures acquisition.To do that, neutral density filters are fixed on the objectives of the camera. Then, pixel matchingis applied to aggregate pixels that represent the same point in the acquired scene. Finally, radiance is calculated for each pixel of the set of images by using a weighted average of LDR values. An additiona lstep is necessary because some pixels have wrong radiance. We proposed a method based on the color of adjacent pixels and two methods based on the correction of the disparity of those pixels. The first method is based on the disparity of pixels of the neighborhood and the second method on the disparity independently calculated on each color channel. This pipeline allows the generation of 3D HDR image son each viewpoint. A tone-mapping algorithm is then applied on each of these images. Their composition with filters corresponding to the autostereoscopic screen used allows the visualization of the generated 3DHDR image
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Orndorff, Tim, Amit Puri, Mike Smiley, and John Connell. "Application of a High Data Rate Modem (HDRM)." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606209.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California
A traditional Receiver, Modulator, Bit Synchronizer, Frame Synchronizer and Front-End Processor (FEP) with local RAID storage from numerous satellite ground station equipment providers is typically used to satisfy current needs in mission ground stations. The development of Software Defined Radios (SDRs) with reprogrammable personalities has led to the consolidation of these processing elements, and will become the standard for years to follow. CVG-Avtec Systems, Inc. has been a pioneer in the SDR industry, integrating several ground station functions into a one system solution. Its High Data Rate Modem (HDRM) architecture replaces racks of previous generation equipment, providing greater functionality in a smaller footprint. The Field Programmable Gate Array (FPGA) based HDRM is a one system solution that inputs Intermediate Frequency (IF) data and outputs packetized data over IP for data distribution. These new architectures are capitalizing on the revolution in electronics and networking technologies. This paper will discuss the architecture of the HDRM and how it optimizes ground station data processing in a high-rate environment.
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Holm, Åsa. "Mathematical Optimization of HDR Brachytherapy." Doctoral thesis, Linköpings universitet, Optimeringslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-99795.

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One out of eight deaths throughout the world is due to cancer. Developing new treatments and improving existing treatments is hence of major importance. In this thesis we have studied how mathematical optimization can be used to improve an existing treatment method: high-dose-rate (HDR) brachytherapy. HDR brachytherapy is a radiation modality used to treat tumours of for example the cervix, prostate, breasts, and skin. In HDR brachytherapy catheters are implanted into or close to the tumour volume. A radioactive source is moved through the catheters, and by adjusting where the catheters are placed, called catheter positioning, and how the source is moved through the catheters, called the dwelling time pattern, the dose distribution can be controlled. By constructing an individualized catheter positioning and dwelling time pattern, called dose plan, based on each patient's anatomy, it is possible to improve the treatment result. Mathematical optimization has during the last decade been used to aid in creating individualized dose plans. The dominating optimization model for this purpose is a linear penalty model. This model only considers the dwelling time pattern within already implanted catheters, and minimizes a weighted deviation from dose intervals prescribed by a physician. In this thesis we show that the distribution of the basic variables in the linear penalty model implies that only dwelling time patterns that have certain characteristics can be optimal. These characteristics cause troublesome inhomogeneities in the plans, and although various measures for mitigating these are already available, it is of fundamental interest to understand their cause. We have also shown that the relationship between the objective function of the linear penalty model and the measures commonly used for evaluating the quality of the dose distribution is weak. This implies that even if the model is solved to optimality there is no guarantee that the generated plan is optimal with respect to clinically relevant objectives, or even near-optimal. We have therefore constructed a new model for optimizing the dwelling time pattern. This model approximates the quality measures by the concept conditional value-at-risk, and we show that the relationship between our new model and the quality measures is strong. Furthermore, the new model generates dwelling time patterns that yield high-quality dose distributions. Combining optimization of the dwelling time pattern with optimization of the catheter positioning yields a problem for which it is rarely possible to find a proven optimal solution within a reasonable time frame. We have therefore developed a variable neighbourhood search heuristic that outperforms a state-of-the-art optimization software (CPLEX). We have also developed a tailored branch-and-bound algorithm that is better at improving the dual bound than a general branch-and-bound algorithm. This is a step towards the development of a method that can find proven optimal solutions to the combined problem within a reasonable time frame.
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Books on the topic "HDRB"

1

Fisher, Robert. The Anti-HDR HDR Photography Book. New York, NY : Routledge, 2016.: Routledge, 2016. http://dx.doi.org/10.4324/9781315659497.

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Wagner, Reinhard. Profibuch HDR-Fotografie: [atemberaubende Bilder mit HDR-Effekt erstellen ; richtig belichten für perfekte HDR-Bilder ; HDR-Bilder per Software optimieren]. Poing: Franzis, 2010.

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Davis, Harold. Creating HDR photos. New York: Amphoto Books, 2012.

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Montagna, F. Joseph. HDR: Herbal desk reference. Dubuque, Iowa: Kendall/Hunt, 1990.

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Sakaloŭski, U. L. Belaruskai͡a︡ litaratura ŭ HDR. Minsk: "Navuka i tėkhnika", 1988.

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Robert, Correll, Carr Pete, and Carr, eds. HDR Photography: Photo Workshop. Hoboken: Wiley [Imprint], 2009.

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Carr, Pete. HDR photography photo workshop. 2nd ed. Indianapolis: Wiley, 2012.

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A world in HDR. Berkeley, Calif. : London: New Riders ; Pearson Education [distributor], 2010.

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Singapore. Dept. of Statistics. Tenant households in HDB flats. Singapore: Dept. of Statistics, 1997.

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Hoefflinger, Bernd, ed. High-Dynamic-Range (HDR) Vision. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-44433-6.

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Book chapters on the topic "HDRB"

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Ghrewati, Bahaa Eddin, and Manas Ranjan Das. "Study on the Mechanisms of Manufacturing High-Damping Seismic Isolator—HDRB." In Lecture Notes in Mechanical Engineering, 909–18. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4795-3_84.

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Sharma, Himanshu, Praveen Dakwale, Dipti M. Sharma, Rashmi Prasad, and Aravind Joshi. "Assessment of Different Workflow Strategies for Annotating Discourse Relations: A Case Study with HDRB." In Computational Linguistics and Intelligent Text Processing, 523–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37247-6_42.

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Peter, Helga, and Thomas Penzel. "HDRS." In Springer Reference Medizin, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-642-54672-3_532-1.

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Nedden, Max. "HDR-Berechnung." In Neue Methoden zur Charakterisierung der QSAR-Anwendungsdomäne, 175–96. Wiesbaden: Vieweg+Teubner Verlag, 2012. http://dx.doi.org/10.1007/978-3-8348-2489-9_8.

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Siebert, Frank-André. "HDR Planning." In Interstitial Prostate Brachytherapy, 149–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36499-0_11.

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Hoskin, Peter. "HDR Technique." In Interstitial Prostate Brachytherapy, 103–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36499-0_7.

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Banterle, Francesco, Alessandro Artusi, Kurt Debattista, and Alan Chalmers. "HDR Pipeline." In Advanced High Dynamic Range Imaging, 13–43. Second edition. | Boca Raton : Taylor & Francis, CRC Press,: A K Peters/CRC Press, 2017. http://dx.doi.org/10.1201/9781315119526-2.

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Tomaszewska, Anna, and Mateusz Markowski. "Dynamic Scenes HDRI Acquisition." In Lecture Notes in Computer Science, 345–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13775-4_35.

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Gockel, Tilo. "HDR und DRI." In X.media.press, 71–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-11239-3_7.

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Banterle, Francesco, Alessandro Artusi, Kurt Debattista, and Alan Chalmers. "HDR Images Compression." In Advanced High Dynamic Range Imaging, 197–219. Second edition. | Boca Raton : Taylor & Francis, CRC Press,: A K Peters/CRC Press, 2017. http://dx.doi.org/10.1201/9781315119526-8.

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Conference papers on the topic "HDRB"

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Paolacci, Fabrizio. "On the Effectiveness of Two Isolation Systems for the Seismic Protection of Elevated Tanks." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28563.

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This paper deals with the effectiveness of two isolation system for the seismic protection of elevated steel storage tanks. In particular the performance of High Damping Rubber Bearings and Friction Pendulum isolators has been analyzed. As case study an emblematic example of elevated tanks collapsed during the Koaceli Earthquake in 1999 at Habas Pharmaceutics plant in Turkey has been considered. A time-history analysis conducted using lumped mass models demonstrated the high demand in terms of base shear required to the support columns and their inevitable collapse due to the insufficient shear strength. A proper design of HDRB and FPS isolator and a complete non-linear analysis of the isolated tanks proved the high effectiveness of both isolation systems in reducing the response of the case tank. Actually, a reduced level of displacements of isolators and a reduced level of convective base shear obtained with the second isolation typology, suggested the used of FPS isolators rather than HDRB.
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Dipaola, Vincenzo, Giuseppe Carlo Marano, and Rita Greco. "Stochastic Analysis of Sensitivity and Efficiency of Base Isolation System in Seismic Structural Protection." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1448.

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In this research the seismic response of structures isolated at the base by means of High Damping Laminated Rubber Bearings (HDRB) is evaluated. The analysis is performed by using a stochastic approach and a Gaussian zero mean non stationary stochastic process is used in order to model the seismic acceleration acting at the base of the structure. In order to take into account of the non-linear constitutive behavior both of the base isolation device and of the structure, the hysteretic differential Bouc-Wen model (BWM) is adopted. Moreover, the stochastic linearization method in the time domain is adopted to estimate the statistical moments of the non-linear system response in the state space. After estimating the system response variance a sensitivity analysis is carried out. The final aim of the research is to asses the real capacity of base isolation devices in order to protect the structures from seismic actions, by avoiding a non-linear response with associated large plastic displacements, and, therefore, by limiting related damage phenomena in structural and non structural members. In order to achieve this objective the stochastic response of a non-linear n-dof shear-type base isolated building is analyzed. The protection level offered to the structure by the base isolators is then assessed by evaluating the reduction both of the displacement response and the hysteretic dissipated energy.
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Xu, Yilun, Ziyang Liu, Xingming Wu, Weihai Chen, and Zhengguo Li. "Restoration of HDR Images for SVE-Based HDRI via a Novel DCNN." In 2021 IEEE International Conference on Multimedia and Expo (ICME). IEEE, 2021. http://dx.doi.org/10.1109/icme51207.2021.9428198.

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Petroni, Fabio, Leonardo Querzoni, Khuzaima Daudjee, Shahin Kamali, and Giorgio Iacoboni. "HDRF." In CIKM'15: 24th ACM International Conference on Information and Knowledge Management. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2806416.2806424.

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Widodo, Ryan Nathanael Soenjoto, Hirotake Abe, and Kazuhiko Kato. "HDRF." In APSys '20: 11th ACM SIGOPS Asia-Pacific Workshop on Systems. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3409963.3410500.

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Liu, Liping, Tama´s Kalma´r-Nagy, and Earl H. Dowell. "The High Dimensional Harmonic Balance Analysis of a Second-Order Delay-Differential Equations." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34396.

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In this paper we demonstrate the utility of the High Dimensional Harmonic Balance (HDHB) method to compute periodic orbits of second-order delay-differential equations. In particular, the method has been successfully applied to capture the unstable limit cycles of a model of regenerative machine tool vibrations. Both the conventional harmonic balance and the HDHB methods are employed to investigate the dynamic behavior of the nonlinear delay equation. The results show an excellent agreement with those from time domain solutions. The advantages of HDHB over the classical Harmonic Balance method are highlighted and discussed.
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Eilertsen, Gabriel, Rafał K. Mantiuk, and Jonas Unger. "Luma HDRv." In SIGGRAPH '16: Special Interest Group on Computer Graphics and Interactive Techniques Conference. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2897839.2927447.

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Sadoughi, Mohammad Kazem, Meng Li, Chao Hu, and Cameron A. Mackenzie. "High-Dimensional Reliability Analysis of Engineered Systems Involving Computationally Expensive Black-Box Simulations." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68273.

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Reliability analysis involving high-dimensional, computationally expensive, highly nonlinear performance functions is a notoriously challenging problem. In this paper, we tackle this problem by proposing a new method, high-dimensional reliability analysis (HDRA), in which a surrogate model is built to approximate a performance function that is high dimensional, computationally expensive, implicit and unknown to the user. HDRA first employs the adaptive univariate dimension reduction (AUDR) method to build a global surrogate model by adaptively tracking the important dimensions or regions. Then, the sequential exploration-exploitation with dynamic trade-off (SEEDT) method is utilized to locally refine the surrogate model by identifying additional sample points that are close to the critical region (i.e., the limit-state function) with high prediction uncertainty. The HDRA method has three advantages: (i) alleviating the curse of dimensionality and adaptively detecting important dimensions; (ii) capturing the interactive effects among variables on the performance function; and (iii) flexibility in choosing the locations of sample points. The performance of the proposed method is tested through two mathematical examples, the results of which suggest that the method can achieve accurate and computationally efficient estimation of reliability even when the performance function exhibits high dimensionality, high nonlinearity, and strong interactions among variables.
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Kasahara, Yasuhiro, Shigenobu Suzuki, and Takashi Kikuchi. "Hysteretic Restoring Force Characteristics of High Damping Rubber Bearings Under High Compressive Stress." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2928.

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Hysteretic restoring force characteristics — shear stiffness, equivalent damping ratio, and ultimate properties — of seismic isolation bearings are significantly affected by compressive stress. In this study, dependence of shear properties of high-damping rubber bearings (HDR) on the compressive stress σ and secondary shape factor S2 was studied by dynamic loading test with scaled-model and static loading test with full-scale isolators. The results highlighted the high compressive stress dependency on restoring force characteristics of HDR with the isolator of relatively small S2. It is concluded that large S2 is desired when isolators are designed for high compressive stress. The applicability of HDR under high compressive stress was experimentally verified.
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Akçora, Ezgi, Francesco Banterle, Massimiliano Corsini, Ahmet Oğuz Akyüz, and Roberto Scopigno. "Practical-HDR." In the 13th European Conference. New York, New York, USA: ACM Press, 2016. http://dx.doi.org/10.1145/2998559.2998568.

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Reports on the topic "HDRB"

1

Murphy, Hugh D. HDR Report to Senate. Office of Scientific and Technical Information (OSTI), February 1988. http://dx.doi.org/10.2172/1244371.

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Davda, Reena, and Amani Chowdhury. HDR brachytherapy for prostate cancer. BJUI Knowledge, May 2021. http://dx.doi.org/10.18591/bjuik.0686.

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Duchane, David V. Summary of HDR Technology Commercialization Board Meeting. Office of Scientific and Technical Information (OSTI), April 1993. http://dx.doi.org/10.2172/1248148.

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Brown, Donald W. Monthly HDR Technical Status Report for August 1991. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/1248138.

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Malcher, L., D. Schrammel, H. Steinhilber, and C. A. Kot. Seismic investigations of the HDR Safety Program. Summary report. Office of Scientific and Technical Information (OSTI), August 1994. http://dx.doi.org/10.2172/10177012.

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Birdsell, Stephen A. Incorporating Uncoupled Stress Effects into FEHM Modeling of HDR Reservoirs. Office of Scientific and Technical Information (OSTI), July 1988. http://dx.doi.org/10.2172/1244367.

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Brown, D. W. Summary of recent flow testing of the Fenton Hill HDR reservoir. Office of Scientific and Technical Information (OSTI), September 1994. http://dx.doi.org/10.2172/10180008.

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Nowlen, S. P. A summary of the Fire Testing Program at the German HDR Test Facility. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/146789.

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Tills, Jack, Jesse Phillips, and Allen Notafrancesco. An Assessment of MELCOR 2.1: Containment Thermal-Hydraulic Tests in the Heissdampfreaktor (HDR) Facility. Office of Scientific and Technical Information (OSTI), September 2018. http://dx.doi.org/10.2172/1469765.

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Floyd, Jason E. Comparison of CFAST and FDS for fire simulation with the HDR T51 and T52 tests. Gaithersburg, MD: National Institute of Standards and Technology, 2002. http://dx.doi.org/10.6028/nist.ir.6866.

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