Relevant bibliographies by topics / Focal Depths

Contents

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

Academic literature on the topic 'Focal Depths'

Author: Grafiati
Published: 6 July 2024
Last updated: 31 July 2025

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Journal articles on the topic "Focal Depths"

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Katch, Lauren, and Andrea Arguelles. "Analysis of Ultrasonic Focusing in Silicon Wafers using the Angular Spectrum Approach and Ray Tracing." Materials Evaluation 83, no. 1 (2025): 50–59. https://doi.org/10.32548/2025.me-04469.

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Understanding ultrasonic beam focusing in anisotropic media is crucial for optimizing nondestructive evaluation techniques, as many advanced materials exhibit anisotropic properties. This study investigates the focusing behavior of ultrasonic beams in silicon, a representative anisotropic material, across three crystallographic orientations (0°, 22.5°, and 45° offsets from the [1 0 0] axis) using the angular spectrum approach (ASA) and ray tracing to understand computational cost trade-offs between the two models while elucidating new focusing behaviors and profiles. The ASA model is used to c
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Yun, Sukyoung, Won Sang Lee, Robert P. Dziak, and Haruyoshi Matsumoto. "Numerical Study on the Characteristics of Abyssal T-Wave Envelopes Controlled by Earthquake Source Parameters." Seismological Research Letters 93, no. 4 (2022): 2189–200. http://dx.doi.org/10.1785/0220210264.

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Abstract Hydroacoustics has been successfully applied to detect and locate small-to-intermediate submarine tectonic activities infrequently recorded in land-based seismic arrays. However, to extend the utilization of T waves to extract other important earthquake source parameters, such as source strength, the roles of earthquake focal mechanisms, and source depths in T-wave envelopes must be thoroughly understood. We performed 3D numerical modeling considering anisotropic source radiation and realistic scattering in the oceanic crust for two focal mechanisms (normal and strike-slip faults) and
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Szeidovitz, Gy, Z. Bus, and K. Gribovszki. "Focal depths of earthquakes in the Carpathian Basin." Acta Geodaetica et Geophysica Hungarica 39, no. 4 (2004): 447–70. http://dx.doi.org/10.1556/ageod.39.2004.4.13.

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Wang, Yaheng, Li Yi, Masayoshi Tonouchi, and Tadao Nagatsuma. "High-Speed 600 GHz-Band Terahertz Imaging Scanner System with Enhanced Focal Depth." Photonics 9, no. 12 (2022): 913. http://dx.doi.org/10.3390/photonics9120913.

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Lenses/mirrors with fast data acquisition speeds and extended focal depths have practical importance in terahertz (THz) imaging systems. Thus, a high-speed 600 GHz-band THz imaging scanner system with enhanced focal depth is presented in this work. A polygon mirror with a 250 Hz scanning frequency and an integrated off-axis parabolic (OAP) mirror with an ~170 mm focal depth were employed for 2D imaging. The simulation and experimental results show that a spatial resolution of ~2 mm can be achieved as the imaging distance varies from ~85 to 255 mm. The proposed system was applied to image a hid
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Shevchenko, Yu V. "Some features of the morphology of the seismic focal zone of the Kamchatka region." Geosystems of Transition Zones 9, no. 1 (2025): 5–21. https://doi.org/10.30730/gtrz.2025.9.1.005-021.

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The object of study in this paper is the structure of the seismic focal zone of the Kamchatka region as a part of the Kuril-Kamchatka transitional convergence zone. When studying the morphology of the focal zone, seven layers were distinguished in accordance with the distribution of seismic energy by depth. Based on instrumental observations over 60 years (1962–2021), the maps of earthquake epicenters in the Kamchatka region were constructed for each layer, and seismicity characteristics were obtained: the number of events, depths of peak energy values, total energy, and the ratio of the total
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Palmeri, Mark L., Kristin D. Frinkley, Katherine G. Oldenburg, and Kathryn R. Nightingale. "Characterizing Acoustic Attenuation of Homogeneous Media Using Focused Impulsive Acoustic Radiation Force." Ultrasonic Imaging 28, no. 2 (2006): 114–28. http://dx.doi.org/10.1177/016173460602800204.

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A new method to characterize a material's attenuation using acoustic radiation force is proposed. Comparison of displacement magnitudes generated in a homogeneous material by acoustic radiation force excitations can be used to estimate the material's attenuation when the excitations are applied over a range of focal depths while maintaining a constant lateral focal configuration. Acoustic attenuations are related to the inverse of the excitation focal depth that yields the greatest focal zone displacement for this protocol. Experimental studies in calibrated tissue-mimicking phantoms are prese
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Nguyen, Thanh Phuoc, Van Tu Nguyen, Sudip Mondal, et al. "Improved Depth-of-Field Photoacoustic Microscopy with a Multifocal Point Transducer for Biomedical Imaging." Sensors 20, no. 7 (2020): 2020. http://dx.doi.org/10.3390/s20072020.

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In this study, a photoacoustic microscopy (PAM) system based on a multifocal point (MFP) transducer was fabricated to produce a large depth-of-field tissue image. The customized MFP transducer has seven focal points, distributed along with the transducer’s axis, fabricated by separate spherically-focused surfaces. These surfaces generate distinct focal zones that are overlapped to extend the depth-of-field. This design allows extending the focal zone of 10 mm for the 11 MHz MFP transducer, which is a great improvement over the 0.48 mm focal zone of the 11 MHz single focal point (SFP) transduce
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Ma, Shutian, and Dariush Motazedian. "Focal depth distribution of the 1982 Miramichi earthquake sequence determined by modelling depth phases." Canadian Journal of Earth Sciences 54, no. 4 (2017): 359–69. http://dx.doi.org/10.1139/cjes-2016-0111.

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On 9 January 1982, in the Miramichi region of New Brunswick, Canada, an earthquake with body-wave magnitude (mb) 5.7 occurred, and extensive aftershocks followed. The mainshock was felt throughout Eastern Canada and New England, USA. The mainshock and several principal aftershocks were digitally recorded worldwide, but smaller aftershocks were digitally recorded only at regional stations. Digital stations were not yet popular in 1982; therefore, available regional digital waveform records for modelling are very limited. Fortunately, two Eastern Canada Telemetered Network (ECTN) stations, EBN a
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Li, Chuan, Wenqi Gao, Youxue Wang, and Songping Yu. "Accurate Redetermination of the Focal Depth by Using the Time Intervals between the Inner Core Phases PKIKP and pPKIKP." Applied Sciences 12, no. 15 (2022): 7669. http://dx.doi.org/10.3390/app12157669.

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The hypocenter parameters of an earthquake may give us an insight into the Earth’s structure and tectonic processes. Among the hypocenter parameters, the focal depth is normally more difficult to estimate than the earthquake location (latitude and longitude). We propose to use the pPKIKP-PKIKP arrival time intervals for estimating the focal depth. We analyze the sensitivity of the pPKIKP-PKIKP arrival time interval to the earthquake depth. We measure the pPKIKP-PKIKP arrival time interval on seismograms (the vertical component), and invert the time interval data set using the simulated anneali
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González-Salido, Nuria, and Jorge Camacho. "Normalization of Multifocal Acoustic Radiation Force Impulse Images." Archives of Acoustics 42, no. 2 (2017): 321–31. http://dx.doi.org/10.1515/aoa-2017-0034.

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Abstract Imaging the tissue displacements caused by Acoustic Radiation Force Impulse (ARFI) provides qualitative tissue elasticity maps around the focus. To increase imaging range, multi-focus techniques combine several images obtained with different focal depths. Since the acoustic radiation force depends on focus depth, axial distance and steering angle, a normalization process is required before blending multi-focal ARFI images so that changes in the displayed displacements represent true tissue elasticity variations. This work analyzes the sources of displacement variability in multi-focal
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Dissertations / Theses on the topic "Focal Depths"

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Huang, Paul Yi-Fa. "Focal depths and mechanisms of mid-ocean ridge earthquakes from body waveform inversion." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/54310.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1986.<br>Microfiche copy available in Archives and Science<br>Bibliography: leaves 230-249.<br>by Paul Yi-Fa Huang.<br>Ph.D.
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Dahal, Nawa. "Improving the determination of moment tensors, moment magnitudes and focal depths of earthquakes below Mw 4.0 using regional broadband seismic data:." Thesis, Boston College, 2019. http://hdl.handle.net/2345/bc-ir:108624.

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Thesis advisor: Michael J. Naughton<br>Thesis advisor: John E. Ebel<br>Determining accurate source parameters of small magnitude earthquakes is important to understand the source physics and tectonic processes that activate a seismic source as well as to make more accurate estimates of the probabilities of the recurrences of large earthquakes based on the statistics of smaller earthquakes. The accurate determination of the focal depths and focal mechanisms of small earthquakes is required to constrain the potential seismic source zones of future large earthquakes, whereas the accurate determin
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Laporte, Marine. "Contribution à l'amélioration de l’estimation de la profondeur hypocentrale à partir de réseaux régionaux ou globaux." Electronic Thesis or Diss., Université Paris sciences et lettres, 2022. http://www.theses.fr/2022UPSLE055.

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Cette thèse s’intéresse aux différentes méthodes d’estimation de la profondeur hypocentrale ainsi qu’à la mise en évidence des incertitudes de localisation qui peuvent leur être associées. À distance régionale, on utilise ces méthodes pour cartographier les petites variations de profondeur hypocentrales liées à l’activité du grand chevauchement himalayen au Népal ou pour analyser des crises sismiques choisies selon l’actualité et les opportunités rencontrées durant ces trois ans de thèse. Les effets des différentes sources d’incertitudes sur l’estimation de la profondeur hypocentrale sont quan
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Hu, Xinda. "Development Of The Depth-Fused Multi-Focal-Plane Display Technology." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/338957.

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Conventional stereoscopic displays present a pair of stereoscopic images on a single and fixed image plane. In consequence, these displays lack the capability of correctly rendering focus cues (i.e. accommodation and retinal blur) and may induce the discrepancy between accommodation and convergence. A number of visual artifacts associated with incorrect focus cues in stereoscopic displays have been reported, limiting the applicability of these displays for demanding applications and daily usage. Depth-fused multi-focal-plane display was proposed to create a fixed-viewpoint volumetric display c
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Massey, Kristen L. "Procedural Calibration of Haploscope Wings to Establish Accurate Focal Vergence Depth." Thesis, Mississippi State University, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10980275.

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<p> This thesis project was undertaken with the intent to discover the source of a known but hitherto unexplained error in the calibration of the wings for a haploscope used in depth perception studies. </p><p> The angles of the haploscope wings are used to control the vergence angle of the virtual images projected into each eye. This accounts for a strong depth cue used in AR and depth perception studies. Two experiments were devised to both display and attempt to characterize the error between the theoretical wing angles needed to cause a user&rsquo;s vision to verge at some focal depth an
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Gupta, Divya. "An Empirical Study of the Effects of Context-Switch, Object Distance, and Focus Depth on Human Performance in Augmented Reality." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/33507.

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Augmented reality provides its user with additional information not available through the natural real-world environment. This additional information displayed to the user potentially poses a risk of perceptual and cognitive load and vision-based difficulties. The presence of real-world objects together with virtual augmenting information requires the user to repeatedly switch eye focus between the two in order to extract information from both environments. Switching eye focus may result in additional time on user tasks and lower task accuracy. Thus, one of the goals of this research was to un
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Paerhati, Paruku. "Real-time monocular depth mapping system using variance of focal plane and pixel focus measure." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113117.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (page 48).<br>Vision is one of the most powerful senses available to creatures. Undoubtedly, many of the fundamental operations of humans, such as the ability to plan paths, avoid obstacles, and recognize objects, depend heavily on
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Rodriguez, Joaquin. "Calibration and 3D vision with a color-polarimetric camera." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2023. http://www.theses.fr/2023UBFCK062.

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Parmi les différentes modalités employées en détection, les capteurs de vision sont ceux qui fournissent le plus d'informations sur l'environnement. L'utilisation d'objectifs à courte focale permet en outre d'augmenter facilement la zone observée. L'apparition sur le marché d'imageurs couleurs et polarimétriques permet d'étendre encore davantage les applications en estimation de profondeur. En effet, les paramètres de polarisation de la lumière réfléchies ont liés à la nature des objets ainsi qu'à leur géométrie et peuvent être utilisés avantageusement. Dans cette thèse, notre objectif princip
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Kosmata, Marcel. "Elastische Rückstoßatomspektrometrie leichter Elemente mit Subnanometer-Tiefenauflösung." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-84041.

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In der vorliegenden Arbeit wird erstmals das QQDS-Magnetspektrometer für die höchstauflösende Ionenstrahlanalytik leichter Elemente am Helmholtz-Zentrum Dresden-Rossendorf umfassend vorgestellt. Zusätzlich werden sowohl alle auf die Analytik Einfluss nehmenden Parameter untersucht als auch Methoden und Modelle vorgestellt, wie deren Einfluss vermieden oder rechnerisch kompensiert werden kann. Die Schwerpunkte dieser Arbeit gliedern sich in fünf Bereiche. Der Erste ist der Aufbau und die Inbetriebnahme des QQDS-Magnetspektrometers, der zugehörige Streukammer mit allen Peripheriegeräten und des
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Jing, Ruei-Ci Jhang, and 張簡瑞祈. "Bionic Compound Eye Microlens Array With Multifocus and Long Focal Depth." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/82428857462599080295.

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碩士<br>國立中興大學<br>精密工程學系所<br>104<br>This study aims to develop a bionic compound eye microlens array with multifocus and high depth of field to improve a selected vision quality. There are seven layers of microlens array designed in the bionic compound eye. These microlens array will focus on the same point composed a visual system. There are two parts in this study. The first part is the calculation of each layer''s microlens array focus on the same surfaces, Then the light path can be simulate using fabricated by the optic simulation software, ZEMAX. The second part is the bionic microlens ar
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Books on the topic "Focal Depths"

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Bollinger, G. A. Specification of source zones, recurrence rates, focal depths, and maximum magnitudes for earthquakes affecting the Savannah River site, in South Carolina. U.S. G.P.O., 1992.

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Lee, Sangjoon, and Darlene Machell Espeña. Remapping the Cold War in Asian Cinemas. Amsterdam University Press, 2024. http://dx.doi.org/10.5117/9789463727273.

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This book is about cinema and the cultural Cold War in Asia, set against the larger history of the cultural, political, and institutional linkages between the US, Europe, and Asia at the height of the Cold War. From the popularity of CIA-sponsored espionage films in Hong Kong and South Korea to the enduring Cold War rhetoric of brotherly relations in contemporary Sino-Indian co-production, cinema has always been a focal point of the cultural Cold War in Asia. Historically, both the United States and the Soviet Union viewed cinema as a powerful weapon in the battle to win hearts and minds—not j
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Seeck, Margitta, and Donald L. Schomer. Intracranial EEG Monitoring. Edited by Donald L. Schomer and Fernando H. Lopes da Silva. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190228484.003.0029.

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Intracranial electroencephalography (iEEG) is used to localize the focus of seizures and determine vital adjacent cortex before epilepsy surgery. The two most commonly used electrode types are subdural and depth electrodes. Foramen ovale electrodes are less often used. Combinations of electrode types are possible. The choice depends on the presumed focus site. Careful planning is needed before implantation, taking into account the results of noninvasive studies. While subdural recordings allow better mapping of functional cortex, depth electrodes can reach deep structures. There are no guideli
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Young, Emma. Masculinity. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474427739.003.0005.

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Since the 1980s masculinity, more specifically ‘hegemonic masculinity’ has been a focal point of gender and sexuality discourses. The short story writings of Mantel, Hislop, and most particularly, Tremain, reflect, critique and problematize such understandings of masculinity. This chapter is shaped around three key areas that are often seen as defining masculinity: work, sexuality and the differences between male and female bodies. As with the historical strand of chapter three, in this chapter there will be a focus on history and one particularly significant historical moment for men and masc
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Herron, Erik S., Robert J. Pekkanen, and Matthew S. Shugart, eds. The Oxford Handbook of Electoral Systems. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780190258658.001.0001.

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No subject is more central to the study of politics than elections. All across the globe, elections are a focal point for citizens, the media, and politicians long before-and sometimes long after—they occur. Electoral systems, the rules about how voters’ preferences are translated into election results, profoundly shape not only the results of individual elections but also many other important political outcomes including party systems, candidate selection, and policy choices. Electoral systems have been a hot topic in established democracies from the United Kingdom and Italy to New Zealand an
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Julesz, Bela. Dialogues on Perception. The MIT Press, 1994. http://dx.doi.org/10.7551/mitpress/2398.001.0001.

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An elucidation of ideas and insights generated by the paradigm of "early vision," presented in the form of dialogues. Renowned for his work in depth perception and pattern recognition, Bela Julesz originated the techniques—involving computer-generated random-dot stereograms, cinematograms, and textures—that resulted in the subfield of human psychology called "early vision." In this book, Julesz elucidates the ideas and insights generated by this exciting paradigm in a series of dialogues between Julesz the naif and Julesz the scientist. These playful, personal, deeply informed dialogues, thoug
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Phillips, Kendall R. Controversial Cinema. Greenwood Publishing Group, Inc., 2008. http://dx.doi.org/10.5040/9798400631719.

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At the heart of any history of controversial films is a strange paradox: while films, especially popular and mainstream films, are often portrayed as meaningless products of popular culture, those popular films involved in public controversies become the focal point of enormous cultural energy, political attention, and profoundly conflicting sets of principles. The ongoing culture wars continue to shape the American political landscape, and controversial films continue to be a major point of conflict. Controversial Cinema: The Films that Outraged America traces the history of controversial fil
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Wooldredge, John, and Paula Smith, eds. The Oxford Handbook of Prisons and Imprisonment. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199948154.001.0001.

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The Oxford Handbook on Prisons and Imprisonment provides a rich source of information on institutional corrections around the world, covering the most critical issues facing both inmates and prison staff. The contributors offer theoretically informed and critical discussions of these issues that facilitate more objective and realistic assessments of related problems and their possible solutions. The handbook is the first original volume on prisons and prisoners to cover topics relevant to both the social and behavioral sciences with equal depth paid to each area. Focusing on the impact of thes
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Marques, Marcia Alessandra Arantes, ed. Perspectivas e reflexões em Sociologia. Bookerfield Editora, 2021. http://dx.doi.org/10.53268/bkf21091600.

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A obra em questão, contém nove artigos, voltados para a pesquisa no âmbito das Ciências Sociais. De modo geral, o Estado, sua ausência, ou ainda, questionamentos sobre a atuação do mesmo, está presente em quase todos os capítulos. Entretanto, com um olhar mais apurado, é possível identificar especificidades. Nesse sentido, os artigos selecionados, difundem temas voltados aos mais diversos enfoques, como por exemplo, o Desenvolvimento econômico e desigualdades sociais, Saúde e Estado e a Ação Coletiva. No tema Desenvolvimento econômico, desigualdades sociais e violência, destacam-se três capítu
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Book chapters on the topic "Focal Depths"

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Guo, Xinqing, Zhang Chen, Siyuan Li, Yang Yang, and Jingyi Yu. "Deep Eyes: Binocular Depth-from-Focus on Focal Stack Pairs." In Pattern Recognition and Computer Vision. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31726-3_30.

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Kang, Xueyang, Fengze Han, Abdur R. Fayjie, Patrick Vandewalle, Kourosh Khoshelham, and Dong Gong. "FocDepthFormer: Transformer with Latent LSTM for Depth Estimation from Focal Stack." In Lecture Notes in Computer Science. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-96-0348-0_20.

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Koulouri, A., V. Rimpiläinen, M. Brookes, and J. P. Kaipio. "Prior Variances and Depth Un-Biased Estimators in EEG Focal Source Imaging." In EMBEC & NBC 2017. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5122-7_9.

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Yang, Liu, Zedong Du, Zhiren Feng, and Bo Jin. "Spatial Characteristics of Basic Storage Media of Reservoir-Induced Earthquakes in the Lower Reaches of Jinsha River—A Case Study in Baitan-Zhilixincun." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-7251-3_4.

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AbstractReservoir-induced earthquakes have the characteristics of shallow focal depth, small magnitude, high frequency and density in the Baitan-Zhilixincun section of the lower reaches of the Jinsha River. The rock mass of the shallow strata is mostly carbonate rock, which is widely distributed. The shallow metamorphic rocks are mainly distributed at the depth of 10 km. In the concentrated area of reservoir-induced earthquakes, the number of secondary faults is relatively large, and they are mainly reverse faults. The stress and strain patterns of the shallow cracks are mainly unloading crack
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Yüksel, F. A., and M. Alpmen. "Time and Space Distributions of Intermediate Focal Depth Earthquakes in the South-West of Turkey." In Comprehensive Approach to Earthquake Disaster Mitigation. Vieweg+Teubner Verlag, 1993. http://dx.doi.org/10.1007/978-3-322-85461-2_5.

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Ozbay, Baris N., Gregory L. Futia, Ming Ma, et al. "Miniature Multiphoton Microscopes for Recording Neural Activity in Freely Moving Animals." In Neuromethods. Springer US, 2023. http://dx.doi.org/10.1007/978-1-0716-2764-8_7.

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AbstractMiniaturized head-mounted microscopes for in vivo recording of neural activity have gained much recognition within the past decade of neuroscience research. In combination with fluorescent reporters, these miniature microscopes allow researchers to record the neural activity that underlies behavior, cognition, and perception in freely moving animals. Single-photon miniature microscopes are convenient for widefield recording but lack the increased penetration depth and optical sectioning capabilities of multiphoton imaging. Here we discuss the current state of head-mounted multiphoton m
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Brenninger, Sebastian. "Ipse sui vatis vota libellus agat. Entstehungskontexte des Liber ad honorem Augusti." In Storiografie italiane del XII secolo. Firenze University Press, 2024. http://dx.doi.org/10.36253/979-12-215-0403-3.05.

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The Liber at honorem Augusti has traditionally been interpreted as a work of court historiography that was supposed to legitimize the still hardly consolidated Hohenstaufen rule in the Kingdom of Sicily. In contrast to this approach, the present article focuses on a completely different background against which the book was probably drawn up: local political conditions on the Southern Italian mainland. An in-depth analysis of hitherto largely neglected focal points of the narrative suggests that the polemical rhetoric was aimed at Archbishop Nicholas of Salerno, who had been led away in captiv
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Michałowski, Andrzej, Milena Teska, Marta Krzyżanowska, et al. "About the ‘interim’ or discovering the depths of the pre-Roman Iron Age." In Treasures of Time: Research of the Faculty of Archaeology of Adam Mickiewicz University in Poznań. Adam Mickiewicz University Poznan, 2021. http://dx.doi.org/10.14746/wa.2021.18.978-83-946591-9-6.

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The pre-Roman Iron Age, i.e. the last five last centuries BC, is one of the most mysterious periods in Polish prehistory and constitutes an extremely interesting research issue, which help concentrate the studies on it, into a compact group of research problems. The studies on the pre-Roman Iron Age carried out by the group of researchers at the Faculty of Archaeology of the Adam Mickiewicz University are based on the research traditions of Poznań archaeology. The focal point of work in recent years has been settlement pottery, which is a mass source acquired during excavations whose potential
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"focal depth." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_62146.

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"EFFICIENCY-FOCAL DEPTH AND FIGURE 4.5." In Earthquake Engineering. WORLD SCIENTIFIC, 1988. http://dx.doi.org/10.1142/9789814350624_0005.

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Conference papers on the topic "Focal Depths"

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Lin, Rong, Mu Ku Chen, and Din Ping Tsai. "Tunable abrupt autofocusing meta-devices." In JSAP-Optica Joint Symposia. Optica Publishing Group, 2024. https://doi.org/10.1364/jsapo.2024.16p_b4_10.

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Abrupt autofocusing (AAF) beams [1], integrating features of circular Airy and Bessel beams, offer extended focal depths, self-healing properties, high precision, and minimal energy loss. These qualities make them ideal for advanced optical imaging, particle trapping, and laser surgery. Traditionally, spatial light modulators (SLMs) have been used to generate AAF beams by encoding their Fourier transform. However, SLMs suffer from low resolution, energy inefficiency, and a limited operational wavelength range, which hinder precise nanoscale operations. Additionally, their bulky size is at odds
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Horikawa, Kenta, Mariko Isogawa, Hideo Saito, and Shohei Mori. "Dense Depth from Event Focal Stack." In 2025 IEEE/CVF Winter Conference on Applications of Computer Vision (WACV). IEEE, 2025. https://doi.org/10.1109/wacv61041.2025.00446.

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Morris, Crispian, Nantheera Anantrasirichai, Fan Zhang, and David Bull. "DaBiT: Depth and Blur Informed Transformer for Video Focal Deblurring." In 2025 IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW). IEEE, 2025. https://doi.org/10.1109/wacvw65960.2025.00038.

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Garcia, Nicolas, Nicholas Estes, and Jonathan Chisum. "Lens Arrays for Increased Effective Isotropic Radiated Power and Reduced Focal Depth." In 2024 IEEE International Symposium on Phased Array Systems and Technology (ARRAY). IEEE, 2024. https://doi.org/10.1109/array58370.2024.10880345.

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Wei, Xiaolin, Ruilong Yang, Xing Wu, et al. "Improve Deep Learning Autofocus with Depth Information Supervision and Current Focal Distance Cues." In 2024 IEEE International Conference on Systems, Man, and Cybernetics (SMC). IEEE, 2024. https://doi.org/10.1109/smc54092.2024.10831553.

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Mariné, Maximiliano, Maximiliano V. Valdés, and Vicente J. Parot. "Single-shot Multifocal Microscopy by Virtual Array Imaging." In Novel Techniques in Microscopy. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ntm.2023.nm2c.3.

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Current single-shot multifocal imaging requires beam splitters or diffractive elements. We used a mirror cavity to capture an array of virtual images with offset focal depth on a camera. Focusing at multiple depths is demonstrated.
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Ormeni, Rrapo, Ethem Bejko, Albana Hasimi, Klodjan Skrame, and Dionald Mucaj. "ASSESSMENT OF SEISMOACTIVE LAYERS IN ELBASANI GEOTERMAL ZONE, ALBANIA." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/1.1/s05.63.

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Albania is part of one of the most active seismic regions in Europe with dozens of devastating earthquakes throughout history. In this study, we will present an investigation of the earthquakes of the Elbasani region, in terms of the location accuracy and analysis of the features of the seismoactive layers. The distribution of focal depth shows the activation of a lithospheric zone, which extends in depth between 0 and 40 km. Accurate assessment of seismoactive layers of the Elbasani zone is of great interest in the recognition of the real depth of seismic energy generation and relations with
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Komatsu, Makoto, Tsutomu Saito, Eiichi Sato, et al. "Development of a high-speed CMOS drum camera with multiple focal depths." In 26th International Congress on High-Speed Photography and Photonics, edited by Dennis L. Paisley, Stuart Kleinfelder, Donald R. Snyder, and Brian J. Thompson. SPIE, 2005. http://dx.doi.org/10.1117/12.578649.

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Bloxom, Andrew L., Karl D. von Ellenrieder, Matthew R. Anderson, Ryan S. Mieras, and William S. Weidle. "Wave Height Measurements Behind Submerged Lens-Shaped Structures." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49102.

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The ability of submerged lens-shaped structures to focus linear surface waves in deep water is explored through a series of experimental tests in a wave making basin. Three lenses were designed using a combination of linear strip theory and a surface wave analogy to geometrical optics. Two of these lenses were designed to focus waves of a single wavelength of 0.482 m (18.97 in.), one with a focal length to lens width ratio (f-number) of 2.0 and the other with an f-number of 0.5. The third lens was designed to function as a compound lens that could focus a range of wavelengths of between 0.39 m
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Guerra, Reynaldo G., Van Carey, Boris Rubinsky, and Mitchel Berger. "Characterization of the Focal Cooling Necessary to Suppress Spontaneous Epileptiform Activity." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32034.

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It has been established that focal cooling to suppress epileptiform activity has become a real and viable option. However, the specific thermal parameters necessary to suppress epileptiform activity have only begun to be quantitatively defined. In 2002 it was reported that a 41 year-old man with medically intractable epilepsy undertook surgery to remove his tumor and resect adjacent epileptogenic tissue. Electrocorticography was performed before resection. Cold saline was impinged on the resulting interictal spike foci resulting in transient, complete cessation of spiking. We present a transie
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Reports on the topic "Focal Depths"

1

Bent, A. L. Focal mechanisms and depths of aftershocks of the 2010 Haiti earthquake. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2011. http://dx.doi.org/10.4095/288018.

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Murphy, J. R., B. W. Barker, M. E. Marshall, and W. L. Rodi. Improved Focal Depth Determination for Use in Seismic Monitoring of the Underground Nuclear Explosions. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada422863.

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Plourde, A. P., and J. F. Cassidy. Mapping tectonic stress at subduction zones with earthquake focal mechanisms: application to Cascadia, Japan, Nankai, Mexico, and northern Chile. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330943.

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Earthquake focal mechanisms have contributed substantially to our understanding of modern tectonic stress regimes, perhaps more than any other data source. Studies generally group focal mechanisms by epicentral location to examine variations in stress across a region. However, stress variations with depth have rarely been considered, either due to data limitations or because they were believed to be negligible. This study presents 3D grids of tectonic stress tensors using existing focal mechanism catalogs from several subduction zones, including Cascadia, Japan, Nankai, Mexico, and northern Ch
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Lamontagne, M. Focal depth of earthquakes of the St. Lawrence Valley based on crustal phases recorded within 100 km epicentral distance. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2016. http://dx.doi.org/10.4095/299138.

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Ma, S., and M. Lamontagne. Earthquakes of the St. Lawrence Valley between Montreal and Québec: focal depth determination from Regional Depth Phases for the magnitude 2.8 and larger earthquakes for the time period 1980-2014. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/304228.

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Hallett, J. B. L51525 Sizing of Girth Weld Defects Using Focused Ultrasonic Beams. Pipeline Research Council International, Inc. (PRCI), 1987. http://dx.doi.org/10.55274/r0010202.

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This project was produced to evaluate the performance of focused beams in sizing and positioning defects in pipeline girth welds. The sound beams from standard flat transducers were focused using acoustic lenses. Two types of plastics, having different sound velocities are used in the design of these lenses. One is used for the lens and the other for the wedge. The profile of the lens/wedge boundary was designed to focus the sound at a selected depth. The design takes into account the beam angle, beam diameter, focal point and working range required. The effects of test surface curvature were
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West, Chris, Rhian Ebrey, Joe Simpson, et al. Report on preliminary impact and policy insights from model and sectoral case study analysis: trade-linked cross-border impacts. Stockholm Environment Institute, 2023. http://dx.doi.org/10.55317/casc025.

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Trade-linked cross-border climate impacts have the potential to severely disrupt the European economy. Yet, the research landscape that surrounds these potential impacts remains in a relatively nascent stage. Importantly, whilst quantitative approaches can be applied in isolation to develop our understanding of cascading cross-border impacts, these should ideally be supplemented by the broader development of knowledge as to how initial climate triggers might evolve via trade systems, might interact with the actions and activities of supply chain actors, and how the wider policy landscape might
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Specification of source zones, recurrence rates, focal depths, and maximum magnitudes for earthquakes affecting the Savannah River site in South Carolina. US Geological Survey, 1992. http://dx.doi.org/10.3133/b2017.

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