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Добірка наукової літератури з теми "IACT Analysis"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "IACT Analysis"

Feng, Qi, and Tony T. Y. Lin. "The analysis of VERITAS muon images using convolutional neural networks." Proceedings of the International Astronomical Union 12, S325 (October 2016): 173–79. http://dx.doi.org/10.1017/s1743921316012734.

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AbstractImaging atmospheric Cherenkov telescopes (IACTs) are sensitive to rare gamma-ray photons, buried in the background of charged cosmic-ray (CR) particles, the flux of which is several orders of magnitude greater. The ability to separate gamma rays from CR particles is important, as it is directly related to the sensitivity of the instrument. This gamma-ray/CR-particle classification problem in IACT data analysis can be treated with the rapidly-advancing machine learning algorithms, which have the potential to outperform the traditional box-cut methods on image parameters. We present preliminary results of a precise classification of a small set of muon events using a convolutional neural networks model with the raw images as input features. We also show the possibility of using the convolutional neural networks model for regression problems, such as the radius and brightness measurement of muon events, which can be used to calibrate the throughput efficiency of IACTs.

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Geng, Fu Quan, Zhi Gang Huang, Xuan Jie Ning, and Mao Fan Yang. "A Joint Improved Irregular Accumulate Concatenated Tree Coding and Frequency Hopping OFDM Modulation Scheme for Wireless Networks." Advanced Materials Research 902 (February 2014): 364–69. http://dx.doi.org/10.4028/www.scientific.net/amr.902.364.

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Joint channel coding and spread spectrum modulation technologies bring to wireless networks the tremendous amount of performance improvement, the elimination, and the mitigation of interference. This paper proposes an improved design for irregular accumulate concatenated tree (IACT) codes, which can be viewed as simply precoded by an accumulator. This class of codes belongs to the special turbo-like codes, which combines the advantages of fast encoder structures of turbo codes, and the advantages of parallel high-speed belief-propagation (BP) iterative decoding algorithm of low-density parity-check (LDPC) codes. The improved IACT codes can be coded via a Tanner graph. With these improved codes, we propose a joint IACT coding and frequency hopping orthogonal frequency division multiplexing (FH-OFDM) modulation scheme for wireless networks. We compare the performance of different coding bases such as the irregular concatenated tree (ICT) codes and turbo codes in the scheme by theoretical analysis and simulation. Numerical results are shown that the proposed scheme with these IACT codes has really good performance.

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Fiasson, A., F. Dubois, G. Lamanna, J. Masbou, and S. Rosier-Lees. "Optimization of multivariate analysis for IACT stereoscopic systems." Astroparticle Physics 34, no. 1 (August 2010): 25–32. http://dx.doi.org/10.1016/j.astropartphys.2010.04.006.

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Mohrmann, L., A. Specovius, D. Tiziani, S. Funk, D. Malyshev, K. Nakashima та C. van Eldik. "Validation of open-source science tools and background model construction in γ-ray astronomy". Astronomy & Astrophysics 632 (грудень 2019): A72. http://dx.doi.org/10.1051/0004-6361/201936452.

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Анотація:

In classical analyses of γ-ray data from imaging atmospheric Cherenkov telescopes (IACTs), such as the High Energy Stereoscopic System (H.E.S.S.), aperture photometry, or photon counting, is applied in a (typically circular) region of interest (RoI) encompassing the source. A key element in the analysis is to estimate the amount of background in the RoI due to residual cosmic ray-induced air showers in the data. Various standard background estimation techniques have been developed in the last decades, most of them rely on a measurement of the background from source-free regions within the observed field of view. However, in particular in the Galactic plane, source analysis and background estimation are hampered by the large number of, sometimes overlapping, γ-ray sources and large-scale diffuse γ-ray emission. For complicated fields of view, a three-dimensional (3D) likelihood analysis shows the potential to be superior to classical analysis. In this analysis technique, a spectromorphological model, consisting of one or multiple source components and a background component, is fitted to the data, resulting in a complete spectral and spatial description of the field of view. For the application to IACT data, the major challenge of such an approach is the construction of a robust background model. In this work, we apply the 3D likelihood analysis to various test data recently made public by the H.E.S.S. collaboration, using the open analysis frameworks ctools and Gammapy. First, we show that, when using these tools in a classical analysis approach and comparing to the proprietary H.E.S.S. analysis framework, virtually identical high-level analysis results, such as field-of-view maps and spectra, are obtained. We then describe the construction of a generic background model from data of H.E.S.S. observations, and demonstrate that a 3D likelihood analysis using this background model yields high-level analysis results that are highly compatible with those obtained from the classical analyses. This validation of the 3D likelihood analysis approach on experimental data is an important step towards using this method for IACT data analysis, and in particular for the analysis of data from the upcoming Cherenkov Telescope Array (CTA).

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Albert, A., R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A. Ayala Solares, R. Babu та ін. "Detailed Analysis of the TeV γ-Ray Sources 3HWC J1928+178, 3HWC J1930+188, and the New Source HAWC J1932+192". Astrophysical Journal 942, № 2 (1 січня 2023): 96. http://dx.doi.org/10.3847/1538-4357/ac8de3.

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Abstract The latest High Altitude Water Cherenkov (HAWC) point-like source catalog up to 56 TeV reported the detection of two sources in the region of the Galactic plane at galactic longitude 52° < ℓ < 55°, 3HWC J1930+188 and 3HWC J1928+178. The first one is associated with a known TeV source, the supernova remnant SNR G054.1+00.3. It was discovered by one of the currently operating Imaging Atmospheric Cherenkov Telescope (IACT), the Very Energetic Radiation Imaging Telescope Array System (VERITAS), detected by the High Energy Stereoscopic System (H.E.S.S), and identified as a composite SNR. However, the source 3HWC J1928+178, discovered by HAWC and coincident with the pulsar PSR J1928+1746, was not detected by any IACT despite their long exposure on the region, until a recent new analysis of H.E.S.S. data was able to confirm it. Moreover, no X-ray counterpart has been detected from this pulsar. We present a multicomponent fit of this region using the latest HAWC data. This reveals an additional new source, HAWC J1932+192, which is potentially associated with the pulsar PSR J1932+1916, whose γ-ray emission could come from the acceleration of particles in its pulsar wind nebula. In the case of 3HWC J1928+178, several possible explanations are explored, in an attempt to unveil the origins of the very-high-energy γ-ray emission.

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Vovk, I., M. Strzys, and C. Fruck. "Spatial likelihood analysis for MAGIC telescope data." Astronomy & Astrophysics 619 (November 2018): A7. http://dx.doi.org/10.1051/0004-6361/201833139.

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Context. The increase in sensitivity of Imaging Atmospheric Cherenkov Telescopes (IACTs) has lead to numerous detections of extended γ-ray sources at TeV energies, sometimes of sizes comparable to the instrument’s field of view. This creates a demand for advanced and flexible data analysis methods that are able to extract source information using the photon counts in the entire field of view. Aims. We present a new software package, “SkyPrism”, aimed at performing 2D (3D if energy is considered) fits of IACT data that possibly contain multiple and extended sources. The fits are based on sky images binned in energy. Although the development of this package was focused on the analysis of data collected with the MAGIC telescopes, it can further be adapted to other instruments, such as the future Cherenkov Telescope Array. Methods. We have developed a set of tools that in addition to sky images (count maps) compute the instrument response functions of MAGIC (effective exposure throughout the field of view, point spread function, energy resolution, and background shape) based on the input data, Monte Carlo simulations, and the pointing track of the telescopes. With this information, the package can perform a simultaneous maximum likelihood fit of source models of arbitrary morphology to the sky images providing energy spectra, detection significances, and upper limits. Results. We demonstrate that the SkyPrism tool accurately reconstructs the MAGIC point spread function, on- and off-axis performance as well as the underlying background. We further show that for a point source analysis with the MAGIC default observational settings, SkyPrism gives results compatible with those of the standard tools while being more flexible and widely applicable.

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Ivanova, A. L., R. Monkhoev, I. Astapov, P. Bezyazeekov, M. Blank, E. Bonvech, A. Borodin, et al. "Tunka-Grande scintillation array: resent results." Journal of Physics: Conference Series 2156, no. 1 (December 1, 2021): 012196. http://dx.doi.org/10.1088/1742-6596/2156/1/012196.

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Abstract Objectives of the TAIGA Astrophysical complex include the study of the flux of charged cosmic rays and diffuse gamma rays with energies above 100 TeV. This complex is located in the Tunka Valley about 50 km from Lake Baikal at the site of the Tunka-133 Cherenkov facility. TAIGA includes the TAIGA-HiSCORE wide-angle Cherenkov array, the network of Imaging Atmospheric Cherenkov Telescopes (TAIGA-IACT), the Tunka-Grande and TAIGA-Muon scintillation arrays. In this work, we present the results of an analysis of the joint events of the Tunka-Grande scintillation array and TAIGA-HiSCORE and Tunka-133 Cherenkov facilities. The results verify sufficient accuracy of the scintillation experiment for the hybrid study of mass composition of cosmic rays and gamma-hadron separation.

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BARTKO, H. "OBSERVATION OF GALACTIC SOURCES OF VERY HIGH ENERGY γ-RAYS WITH THE MAGIC TELESCOPE". Modern Physics Letters A 22, № 29 (21 вересня 2007): 2167–74. http://dx.doi.org/10.1142/s0217732307024309.

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The MAGIC telescope with its 17m diameter mirror is today the largest operating single-dish Imaging Air Cherenkov Telescope (IACT). It is located on the Canary Island La Palma, at an altitude of 2200 m above sea level, as part of the Roque de los Muchachos European Northern Observatory. The MAGIC telescope detects celestial very high energy γ-radiation in the energy band between about 50 GeV and 10 TeV. Since the autumn of 2004 MAGIC has been taking data routinely, observing various objects, like supernova remnants (SNRs), γ-ray binaries, Pulsars, Active Galactic Nuclei (AGN) and Gamma-ray Bursts (GRB). We briefly describe the observational strategy, the procedure implemented for the data analysis, and discuss the results of observations of Galactic Sources.

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Ikrama, Syeda. "An Empirical Study on the Performance of Micro and Small Enterprises and the Financial Planning Managerial Practices." SEDME (Small Enterprises Development, Management & Extension Journal): A worldwide window on MSME Studies 46, no. 4 (December 2019): 248–55. http://dx.doi.org/10.1177/0970846419894755.

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This research paper is intended to study the performance of micro and small enterprises and the financial planning practices adopted by these enterprises. Financial planning means enabling the enterprise to have the right amount of capital in order that the business operations would not get affected. The businesses must first ascertain the financial objectives of the firm to formulate the policies relating to borrowing and lending, cash control, cash management, inventory management, and credit risk management and other financial activities. The present study is an analytical study and a random sampling technique is used. For the purpose of the study Hyderabad district is chosen and a sample size of 120 micro and small enterprises was taken. The statistical tools used for this study are Spearman Rank correlation, KMO Bartlett’s test and Factor analysis. The results of factor analysis gave two factors to ten variables—Important Aspects of Corporate Taxes (IACT) and Recording Transactions and Credit policy (RTCP).

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López-Coto, Rubén, Juan Cortina та Abelardo Moralejo. "MACHETE: A transit Imaging Atmospheric Cherenkov Telescope to survey half of the Very High Energy γ-ray sky". Proceedings of the International Astronomical Union 11, A29A (серпень 2015): 345–46. http://dx.doi.org/10.1017/s1743921316003240.

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AbstractCurrent Cherenkov Telescopes for VHE gamma ray astrophysics are pointing instruments with a field of view up to a few tens of deg2. We propose to build an array of two non-steerable telescopes with a FoV of 5×60 deg2 oriented along the meridian. Roughly half of the sky drifts through this FoV in a year. We have performed a MC simulation to estimate the performance of this instrument, which we dub MACHETE. The sensitivity that MACHETE would achieve after 5 years of operation for every source in this half of the sky is comparable to the sensitivity that a current IACT achieves for a specific source after a 50 h devoted observation. The analysis energy threshold would be 150 GeV and the angular resolution 0.1 deg. For astronomical objects that transit over MACHETE for a specific night, it would achieve an integral sensitivity of 12% of Crab in a night. This makes MACHETE a powerful tool to trigger observations of variable sources at VHE or any other wavelengths.

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Більше джерел

Дисертації з теми "IACT Analysis"

Truzzi, Stefano. "Event classification in MAGIC through Convolutional Neural Networks." Doctoral thesis, Università di Siena, 2022. http://hdl.handle.net/11365/1216295.

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The Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes are able to detect gamma rays from the ground with energies beyond several tens of GeV emitted by the most energetic known objects, including Pulsar Wind Nebulae, Active Galactic Nuclei, and Gamma-Ray Bursts. Gamma rays and cosmic rays are detected by imaging the Cherenkov light produced by the charged superluminal leptons in the extended air shower originated when the primary particle interacts with the atmosphere. These Cherenkov flashes brighten the night sky for short times in the nanosecond scale. From the image topology and other observables, gamma rays can be separated from the unwanted cosmic rays, and thereafter incoming direction and energy of the primary gamma rays can be reconstructed. The standard algorithm in MAGIC data analysis for the gamma/hadron separation is the so-called Random Forest, that works on a parametrization of the stereo events based on the shower image parameters. Until a few years ago, these algorithms were limited by the computational resources but modern devices, such as GPUs, make it possible to work efficiently on the pixel maps information. Most neural network applications in the field perform the training on Monte Carlo simulated data for the gamma-ray sample. This choice is prone to systematics arising from discrepancies between observational data and simulations. Instead, in this thesis I trained a known neural network scheme with observation data from a giant flare of the bright TeV blazar Mrk421 observed by MAGIC in 2013. With this method for gamma/hadron separation, the preliminary results compete with the standard MAGIC analysis based on Random Forest classification, which also shows the potential of this approach for further improvement. In this thesis first an introduction to the High-Energy Astrophysics and the Astroparticle physics is given. The cosmic messengers are briefly reviewed, with a focus on the photons, then astronomical sources of γ rays are described, followed by a description of the detection techniques. In the second chapter the MAGIC analysis pipeline starting from the low level data acquisition to the high level data is described. The MAGIC Instrument Response Functions are detailed. Finally, the most important astronomical sources used in the standard MAGIC analysis are listed. The third chapter is devoted to Deep Neural Network techniques, starting from an historical Artificial Intelligence excursus followed by a Machine Learning description. The basic principles behind an Artificial Neural Network and the Convolutional Neural Network used for this work are explained. Last chapter describes my original work, showing in detail the data selection/manipulation for training the Inception Resnet V2 Convolutional Neural Network and the preliminary results obtained from four test sources.

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Hütten, Moritz. "Prospects for Galactic dark matter searches with the Cherenkov Telescope Array (CTA)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2017. http://dx.doi.org/10.18452/17766.

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Die vorliegende Arbeit beschreibt einen semi-analytischen Ansatz zur Modellierung der Dichteverteilung von DM im Galaktischen Halo. Aus den verschiedenen Substrukturmodellen wird die γ-Strahlungsintensität, welche die Erde erreicht, berechnet. Eine Spannbreite plausibler γ-Strahlungsintensitäten aufgrund der Paarvernichtung Galaktischer DM wird vorgeschlagen, welche die Vorhersagen verschiedener früherer Studien umfasst, und es werden die durchschnittlichen Massen, Abstände und ausgedehnten Strahlungsprofile der γ-strahlungsintensivsten DM-Verdichtungen berechnet. Schließlich werden die DM-Modelle für eine umfassende Berechnung der Nachweismöglichkeit Galaktischer Substrukturen mit CTA verwendet. Die instrumentelle Sensitivität zum Nachweis der γ-strahlungsintensivsten DM-Substruktur wird für eine mit CTA geplanten großflächigen Himmelsdurchmusterung außerhalb der Galaktischen Ebene berechnet. Die Berechnung wird mit CTA Analyse- Software und einer Methode durchgeführt, welche auf einer Likelihood beruht. Eine alternative, ebenfalls Likelihood-basierte Analysemethode wird entwickelt, mit welcher DM-Substrukturen als äumliche Anisotropien im Multipolspektrum des Datensatzes einer Himmelsdurchmusterung nachgewiesen werden können. Die Analysen ergeben, dass eine Himmelsdurchmusterung mit CTA und eine anschließende Suche nach γ-Strahlung von DM-Substrukturen Wirkungsquerschnitte für eine Paarvernichtung in der Größenordnung von (σv) > 1 × 10−24 cm3 s−1 für eine DM-Teilchenmasse von mχ ∼ 500 GeV auf einem Vertrauensniveau von 95% ausschließen kann. Diese Sensitivität ist vergleichbar mit Langzeitbeobachtungen einzelner Zwerggalaxien mit CTA. Eine modellunabhängige Analyse ergibt, dass eine Himmelsdurchmusterung mit CTA Anisotropien im diffusen γ-Strahlungshintergrund oberhalb von 100 GeV für relative Schwankungen von CPF > 10−2 nachweisen kann.
In the current understanding of structure formation in the Universe, the Milky Way is embedded in a clumpy halo of dark matter (DM). Regions of high DM density are expected to emit enhanced γ-radiation from the DM relic annihilation. This γ-radiation can possibly be detected by γ-ray observatories on Earth, like the forthcoming Cherenkov Telescope Array (CTA). This dissertation presents a semi-analytical density modeling of the subclustered Milky Way DM halo, and the γ-ray intensity at Earth from DM annihilation in Galactic subclumps is calculated for various substructure models. It is shown that the modeling approach is able to reproduce the γ-ray intensities obtained from extensive dynamical DM simulations, and that it is consistent with the DM properties derived from optical observations of dwarf spheroidal galaxies. A systematic confidence margin of plausible γ-ray intensities from Galactic DM annihilation is estimated, encompassing a variety of previous findings. The average distances, masses, and extended emission profiles of the γ-ray-brightest DM clumps are calculated. The DM substructure models are then used to draw reliable predictions for detecting Galactic DM density clumps with CTA, using the most recent benchmark calculations for the performance of the instrument. A Likelihood-based calculation with CTA analysis software is applied to find the instrumental sensitivity to detect the γ-ray-brightest DM clump in the projected CTA extragalactic survey. An alternative Likelihood-based analysis method is developed, to detect DM substructures as anisotropies in the angular power spectrum of the extragalactic survey data. The analyses predict that the CTA extragalactic survey will be able to probe annihilation cross sections of ⟨σv⟩ > 1 × 10−24 cm3 s−1 at the 95% confidence level for a DM particle mass of mχ ∼ 500 GeV from DM annihilation in substructures. This sensitivity is compatible with long-term observations of single dwarf spheroidal galaxies with CTA. Independent of a particular source model, it is found that the CTA extragalactic survey will be able to detect anisotropies in the diffuse γ-ray background above 100 GeV at a relative amplitude of CP_F > 10−2.

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Cox, Charlotte T. "Social context and distress : environment, power, distress and IAPT : a discourse analysis." Thesis, Canterbury Christ Church University, 2014. http://create.canterbury.ac.uk/13273/.

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There is a consistent research base that shows that class and inequality is associated with poorer mental health and experiences of distress. Various explanations for this link have been proposed, including psychological, social, structural, material and political factors. Experiences of powerlessness and oppression have also been implicated. Nevertheless psychology focuses predominately on explanations and interventions at the individual level. To explore this incongruence, a Foucauldian Discourse Analysis was completed of texts produced by Improving Access to Psychological Therapies (IAPT), related to the development and practice within IAPT and supervision sessions of high-intensity therapists practicing in IAPT. The emerging discourses are discussed.

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Sundararajan, Nithya. "An analysis of the trends in energy conservation studies of the IAC program." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=648.

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Thesis (M.S.)--West Virginia University, 1999.
Title from document title page. Document formatted into pages; contains xiii, 134 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 123-129).

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Scott, Crystyn. "An exploration of burnout in Improving Access to Psychological Therapy (IAPT) services : an interpretative phenomenological analysis." Thesis, University of the West of England, Bristol, 2018. http://eprints.uwe.ac.uk/35471/.

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Background: Improving Access to Psychological Therapies (IAPT) services are a provision of care characterised by high workloads and high turnover which can mean high levels of burnout. Within the IAPT workforce, research shows that two-thirds of Psychological Wellbeing Practitioners and half of the High-Intensity therapists, experience higher levels of emotional exhaustion, and depersonalization than seen within the mental health workforce. There are implications for the clients, therapists, and organisations where persons are affected by burnout. Aims: The objective of this research was to explore participants’ experiences of burnout and work-related stress in IAPT services which included the components of burnout, emotional exhaustion (EE), depersonalization (DP) and personal accomplishment (PA). Method: Semi-structured interviews and interpretative phenomenological analysis (IPA) were used for data collection and analysis respectively, as they were the most appropriate for understanding individual’s experiences from their own perspectives. Therapists from two IAPT teams in the South West were invited to participate. Results: Analysis revealed three major themes: Therapist Wellbeing, Caseload Challenges and Organisational Support, each with subthemes. Participating therapists discussed their experiences of high caseloads and complex client presentations. They shared their experiences of emotional, mental and physical effects on their wellbeing and expressed the need for more space and time for reflection and supervision. Conclusion: There are potential implications for maintaining the workforce. The insights shared by these ten individuals can contribute to an informed process of change that can help reduce the experience of burnout.

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Haynes, Cody D. "Examining the Relationship Between Functions of Self-Directed Violence and the Suicide Implicit Association Test." TopSCHOLAR®, 2015. http://digitalcommons.wku.edu/theses/1544.

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Suicide and non-suicidal self-injury are concerning and prevalent phenomena in the United States; as a result, much research has been undertaken in order to investigate these topics (Centers for Disease Control and Prevention, 2015a). Although the exploration of risk factors is a common approach, other novel approaches have been developed in order to better understand self-directed violence (Klonsky & May, 2013). One of these is a focus on functions served by these behaviors, which is theorized to contribute to grasping their etiologies and help provide effective treatment (Glenn & Klonsky, 2011). Another approach is investigating implicit cognition and selfassociations’ influences on the development of self-directed violence (Glashouwer et al, 2010). The current study expanded on previous research by using these two novel approaches simultaneously, and measuring the association between the functional aspects of self-directed violence and the Suicide Implicit Association Test. Participants for this study included 32 adolescent inpatients hospitalized at River Valley Behavioral Health Hospital. The Suicide Implicit Association Test served as the independent variable in this study. The following measures served as dependent variables: the Inventory of Statements About Self-Injury, the Self-Harm Behavior Questionnaire, and the Suicide Attempt Self-Injury Interview. Regression analyses revealed non-significant associations for both intrapersonal (β=1.44, S.E.=.91, p=.13) and interpersonal (β=.004, S.E.=.5, p=.99) functions. Poisson regression analyses revealed non-significant associations for both intrapersonal (β=.01, S.E.=.21, p=.97, CI:-.41, .42) and interpersonal (β=.60, S.E.=.51, p=.24, 95% CI:-.40, 1.60) functions. A logistic regression analysis was used to examine the association between Suicide Implicit Association Test scores and number of previous suicide attempts, and this revealed a high odds ratio [OR =4.56, 95% CI: .36, 57.76]. Poisson regression analysis was used to examine the relationship between Suicide Implicit Association Test scores and the frequency of previous non-suicidal self-injury, and this revealed a significant positive association (β=.99, S.E.=.07, p=.00, 95% CI:.86, 1.13). Poisson regression analysis was used to examine the relationship between Suicide Implicit Association Test scores and the severity of previous suicidal ideation, and this revealed a significant positive association (β=1.09, S.E.=.23, p=.00, 95% CI: .65, 1.54).

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Idowu, Barbara. "Counselling psychologists' experience of their professional identity whilst working in an IAPT service : an interpretative phenomenological analysis." Thesis, London Metropolitan University, 2017. http://repository.londonmet.ac.uk/1255/.

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Whilst counselling psychology has established itself as recognised profession in both the NHS and the independent sector, studies and anecdotal evidence have shown that counselling psychology positions itself in opposition to the prevalent medical discourse and is not as well understood an known as its cousin clinical psychology. At the same time, the Increased Access to Psychological Therapies services translate principles of evidence-based practice and clinical governance into a model of psychological therapies delivery, which creates areas of tension between counselling psychology identity and IAPT’s identity. Research conducted in the US and UK as well as anecdotal evidence suggests that this conflict can lead to unclear professional identities for counselling psychologists practising in this setting, contributing to burn-out, disillusionment and job dissatisfaction. Semi-structures interviews were conducted with six counselling psychologists with experience of working in IAPT services, which were analysed using interpretative phenomenological analysis. Their experience of professional identity whilst working in IAPT highlighted an ambivalent relationship with their professional identity, which was attributed to the tension between organisational and professional identities. The consequences were signs of burn-out, disillusionment, disconnection from the profession as well as a negative selfimage of clinical skills. The mediating factor of stages of professional development is discussed.

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Su, Yixiang. "Analyses of Two Ice Class Rules : for The Design Process of a Container Ship." Thesis, KTH, Marina system, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214992.

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During ice voyages, level ice and iceberg with huge inertia force can cause large deformation and even damage on the ship hull structure. Hence the hull structure for ice voyage requires higher strength than it for open water voyages. A container ship will be re-designed for ice voyages in the thesis. Generally, the ice strength is evaluated in ice class rules. IACS polar class and FSICR are adopted in this thesis. Ice class rules are based on experience and experiment data, but there has been no exact formula or parameters to described the ice properties so far. In other words, the results from ice class rules include uncertainties. In order to improve physical understanding, non-linear FE simulations will be processed after the re-design. In the simulations, the ship has a collision with different ice scenarios. The simulations are carried on ANSYS Workbench Explicit Dynamic using the solver of Auto-dyna. Afterwards, the results from the two designs schemes are compared and analysed.

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Painter, A. "Processing people! : the purpose and pitfalls of case management supervision provided for psychological wellbeing practitioners, working within Improving Access to Psychological Therapies (IAPT) services : a thematic analysis." Thesis, University of the West of England, Bristol, 2018. http://eprints.uwe.ac.uk/33351/.

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The spread of Improving Access to Psychological Therapies (IAPT) services in the National Health Service (NHS) in the UK required a new role called a Psychological Wellbeing Practitioner (PWP). The PWP role was envisioned as a frontline position requiring substantially less training than practitioner psychologists, to deliver brief evidence based therapy techniques. PWPs partake in what is called Case Management Supervision (CMS), designed in order to support their unique role. The aim of this qualitative study is to provide insights into how PWPs understand this support mechanism, by exploring their impressions of the role and function of IAPT Case Management Supervision. Data was collected by conducting semi-structured interviews with eight PWPs. Interviews were recorded and transcribed and Thematic Analysis (Braun & Clarke, 2006) was used to identify recurring patterns of meaning, or themes, in the data. Three main themes were identified by the researcher including: ‘Part of the IAPT Machine’, ‘Pitfalls of CMS’, and ‘Serving a Purpose’. These themes illustrate expectations of, struggles with and implicit realisations about the role that CMS has within the broader remit of IAPT services. The findings of this study are discussed in relation to existing literature, current developments and personal observations about the PWP role, whilst also corresponding, more broadly, to the social and political positioning of IAPT services.

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KAO, CHIH-YUAN, and 高志遠. "The Concepts and the Analysis of iArt." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/60855179591153931278.

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碩士
國立屏東教育大學
視覺藝術教育學系
99
The existence of each person is unique, which is not for the established framework, but for creating individual value in one’s limited live span. After meeting basic needs, people begin to pursue a more personalized and independent life. For instance, people show their personal styles, seek individual uniqueness as well as psychological autonomy, and satisfy their personal needs through customized products. Unlike the trend of the times past, it turns into the pursuit of individualized characteristics nowadays. This study adopts a macro point of view to investigate the features of individualization. With the current recognition technology, the types of biological and behavior identification are explored in quest of the key graphic features for identification. In addition, the following artistic expressions are discussed to probe into the art creation using individualized characteristics as the main elements: salient personal styles in the art history, the art form composed of personal and physical characteristics, and Action art which is able to manifest the personal characteristics. By examining the above-mentioned art expressions, the materials of individual features for this study are extracted to create the art of individualized characteristics.

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Книги з теми "IACT Analysis"

Yonge, David R. Bisolute adsorption onto activated carbon in a fixed bed: IAST vs. SIAST. Pullman, WA: State of Washington Water Research Center, Washington State University, 1986.

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Herbert, Mang, ed. Discretization Methods in Structural Mechanics: IUTAM/IACM Symposium Vienna/Austria, 5.-9.6.1989. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990.

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Wick, Jürgen, ed. Wettkampf, Training und Leistungsdiagnostik in den Ausdauersportarten. Meyer & Meyer Sportverlag, 2017. http://dx.doi.org/10.5771/9783840312489.

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Nach den Olympischen Winterspielen 2014 wurde auf Initiative des Fachbereichs Ausdauer am Institut für Angewandte Trainingswissenschaft (IAT) eine intensive Diskussion mit Trainern und Leistungssportverantwortlichen der Ausdauersportarten zu nationalen und internationalen Entwicklungstendenzen sowie möglichen Ursachen für Leistungseinbußen deutscher Athletinnen und Athleten in Gang gesetzt. Untermauert durch die Weltstandsanalysen des IAT in Auswertung von Rio 2016, konnten inhaltliche Schwerpunkte in den Bereichen Trainings- und Wettkampfsysteme, Leistungsdiagnostik und optimale Gestaltung der Umfeldbedingungen gesetzt werden. Im einleitenden, übergreifenden Artikel werden theoretische Standpunkte, die Positionen des IAT und aktuelle sportpraktische Lösungen zu ausgewählten Problemen vorgestellt. Zudem wurde die Anregung des ehemaligen Direktors des IAT, Prof. Arndt Pfützner, anlässlich des 2015 veranstalteten Symposiums "Angewandte Trainingswissenschaft im Forschungs- und Serviceverbund Leistungssport" zur tiefgründigen Analyse einer Vielzahl von trainings-, wettkampf- und leistungsdiagnostischen Daten aufgegriffen. Die daraus gewonnenen neuen Erkenntnisse finden sich in sportartspezifischen Beiträgen in diesem Heft. Sowohl die inhaltliche Diskussion als auch die praktische Umsetzung sind ein laufender Prozess, der u. a. durch die Bereitstellung vorhandenen Wissens zu den aufgeworfenen Fragen in einer vom IAT eingerichteten und ständig aktualisierten Literaturdatenbank unterstützt wird.

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Vann, Samantha. Mind of a Man-Iac: An Analysis of a Man's Mind Thru Music. Independently Published, 2019.

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Ltd, ICON Group. IAT MULTIMEDIA, INC.: International Competitive Benchmarks and Financial Gap Analysis (Financial Performance Series). 2nd ed. Icon Group International, Inc., 2000.

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Ltd, ICON Group. IAT MULTIMEDIA, INC.: Labor Productivity Benchmarks and International Gap Analysis (Labor Productivity Series). 2nd ed. Icon Group International, Inc., 2000.

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Kuhn, G. Discretization Methods in Structural Mechanics: Iutam/Iacm Symposium Vienne/Austria, 5-9.6 1989 (I U T a M - Symposien). Springer, 1990.

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Gillett, Matthew. Eco-Struggles. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198784630.003.0011.

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This chapter examines the provisions of international criminal law applicable to serious environmental harm, particularly during non-international armed conflicts ('NIAC'). After describing incidents of serious environmental harm arising in armed conflicts, the analysis surveys the provisions of international criminal law applicable to environmental harm during NIACs, including war crimes, crimes against humanity, genocide, and aggression. It then examines the basis for extending to NIACs the protection against military attacks causing excessive environmental harm (set out in Art. 8(2)(b)(iv) of the Rome Statute), which is currently only applicable in IACs. The examination of this possible amendment of the Rome Statute covers a broad range of instruments and laws forming part of international and national legal codes, all addressing grave environmental harm. Finally, the analysis turns to accountability for environmental harm as a facet of jus post bellum, emphasizing the interconnected nature of environmental harm and cycles of violence and atrocities.

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Частини книг з теми "IACT Analysis"

Srivastava, Shashank, Abhinav Goyal, Rajeev Kumar, and Nandi G.C. "Statistical Analysis of Network Traffic over LAN through IAMT." In Communications in Computer and Information Science, 329–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22786-8_41.

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Merkow, Mark S. "Testing Part 2: Penetration Testing/Dynamic Analysis/IAST/RASP." In Practical Security for Agile and DevOps, 115–25. Boca Raton: Auerbach Publications, 2021. http://dx.doi.org/10.1201/9781003265566-9.

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Takeuchi, T., N. Osawa, and N. Yamamoto. "Bayesian inference for the parameters of probabilistic corrosion model adopted by IACS." In Advances in the Analysis and Design of Marine Structures, 891–97. London: CRC Press, 2023. http://dx.doi.org/10.1201/9781003399759-99.

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Rogowski, T., J. Sobczyk, and A. P. Wierzbicki. "IAC-DIDAS-L — Dynamic Interactive Decision Analysis and Support System." In Lecture Notes in Economics and Mathematical Systems, 300–301. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-662-22160-0_44.

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Bruno, Alessandro, Antonio Pagliaro, and Valentina La Parola. "Application of Machine and Deep Learning Methods to the Analysis of IACTs Data." In Intelligent Astrophysics, 115–36. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65867-0_5.

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Majchrzak, E., and M. Dziewonski. "Numerical Analysis of Biological Tissue Freezing Process." In IUTAM/IACM/IABEM Symposium on Advanced Mathematical and Computational Mechanics Aspects of the Boundary Element Method, 189–200. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9793-7_16.

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Kreglewski, Tomasz, Jerzy Paczynski, Janusz Granat, and Andrzej P. Wierzbicki. "IAC—DIDAS—N A Dynamic Interactive Decision Analysis and Support System for Multicriteria Analysis of Nonlinear Models." In Lecture Notes in Economics and Mathematical Systems, 378–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-662-21637-8_24.

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Zhang, Ch, and A. Savaidis. "Dynamic Crack Analysis by Hypersingular and Non-Hypersingular Time-Domain BEM." In IUTAM/IACM/IABEM Symposium on Advanced Mathematical and Computational Mechanics Aspects of the Boundary Element Method, 419–28. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9793-7_35.

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Majchrzak, E., and B. Mochnacki. "Analysis of Bio-Heat Transfer in the System Blood Vessel — Biological Tissue." In IUTAM/IACM/IABEM Symposium on Advanced Mathematical and Computational Mechanics Aspects of the Boundary Element Method, 201–11. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9793-7_17.

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Zahra, Nathalie, and William Goodwin. "The Development and Use of Internal Amplification Controls (IACs) with DNA Profiling Kits for Forensic DNA Analysis." In Methods in Molecular Biology, 109–24. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3597-0_8.

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Тези доповідей конференцій з теми "IACT Analysis"

Hofmann, Werner. "Data analysis techniques for stereo IACT systems." In GeV-TeV gamma ray astrophysics workshop. AIP, 2000. http://dx.doi.org/10.1063/1.1291386.

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Gres, Elizaveta, and Alexander Kryukov. "The Preliminary Results on Analysis of TAIGA-IACT Images Using Convolutional Neural Networks." In The 5th International Workshop on Deep Learning in Computational Physics. Trieste, Italy: Sissa Medialab, 2021. http://dx.doi.org/10.22323/1.410.0015.

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Dubenskaya, Julia, Alexander Kryukov, Andrey Demichev, Stanislav Polyakov, Elizaveta Gres, and Anna Aleksandrovna Vlaskina. "Using a Conditional Generative Adversarial Network to Control the Statistical Characteristics of Generated Images for IACT Data Analysis." In The 6th International Workshop on Deep Learning in Computational Physics. Trieste, Italy: Sissa Medialab, 2022. http://dx.doi.org/10.22323/1.429.0004.

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Dubenskaya, J., A. Kryukov, and A. Demichev. "ARCHITECTURE OF A GENERATIVE ADVERSARIAL NETWORK AND PREPARATION OF INPUT DATA FOR MODELING GAMMA EVENT IMAGES FOR THE TAIGA-IACT EXPERIMENT." In 9th International Conference "Distributed Computing and Grid Technologies in Science and Education". Crossref, 2021. http://dx.doi.org/10.54546/mlit.2021.11.22.001.

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Very-high-energy gamma ray photons interact with the atmosphere to give rise to cascades ofsecondary particles – extensive air showers (EASs), which in turn generate very short flashes ofCherenkov radiation. This flashes are detected on the ground with Imaging Air Cherenkov Telescopes(IACTs). In the TAIGA experiment, in addition to images directly detected and recorded by theexperimental facilities, images obtained as a result of simulation are used extensively. Earlier weapplied a machine learning technique called Generative Adversarial Networks (GAN) to quicklygenerate images of gamma events for the TAIGA experiment. The initial analysis of the generatedimages showed the applicability of the method, but revealed some features that require additionalrefinement of the network. In particular, it was important to teach the network that in our case imageshave a specific shape and orientation. In this paper we discuss the possibility of improving thegenerated images by preprocessing the training dataset. We also present an example of a GAN builtand trained with these requirements in mind. Testing the results using third-party software showed thatmore than 95% of the generated images were found to be correct, while the generation is quite fast:after training the network creates about 400 event images in 1 second.

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Quinton, Bruce W. T., Claude G. Daley, and Robert E. Gagnon. "Response of IACS URI Ship Structures to Real-time Full-scale Operational Ice Loads Bruce Quinton." In SNAME 10th International Conference and Exhibition on Performance of Ships and Structures in Ice. SNAME, 2012. http://dx.doi.org/10.5957/icetech-2012-125.

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Moving ice loads can incite significantly different structural responses in a steel grillage structure than can stationary ice loads. This is significant because the accepted standard for the design and analysis of ice-classed ship structures is to assume a stationary ice load (IACS URI I2.3.1). The following work utilizes the 4D Pressure Method ((Quinton, Daley, and Gagnon 2012)) to apply thirty-five of the most significant ice loads recorded during the USCGC Polar Sea trials (1982-86), to fourteen IACS URI PC1-7 classed grillages; using explicit finite element analyses. Two grillage variations for each of the seven PC classes were examined: grillages with "built T" framing and grillages with "flatbar" framing. In short, the following simulations directly employ real-time/real-space measured full-scale ice loads, and thus provide insight into the structural capabilities of the various IACS URI polar classes when subject to actual (moving) ice loads.

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"Preface: 2nd Innovation and Analytics Conference & Exhibition, (IACE 2015)." In INNOVATION AND ANALYTICS CONFERENCE AND EXHIBITION (IACE 2015): Proceedings of the 2nd Innovation and Analytics Conference & Exhibition. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4937015.

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Trichard, Cyril, Armand Fiasson, Gilles Maurin, and Giovanni Lamanna. "Xeff analysis method optimization to enhance IACTs performances." In The 34th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.236.0827.

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"Preface: The 4th Innovation and Analytics Conference & Exhibition (IACE 2019)." In THE 4TH INNOVATION AND ANALYTICS CONFERENCE & EXHIBITION (IACE 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5121031.

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Rosen, Bruce S., Joseph P. Laiosa, Warren H. Davis, and David Stavetski. "SPLASH Free-Surface Flow Code Methodology for Hydrodynamic Design and Analysis of IACC Yachts." In SNAME 11th Chesapeake Sailing Yacht Symposium. SNAME, 1993. http://dx.doi.org/10.5957/csys-1993-008.

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A unique free-surface flow methodology and its application to design and analysis of IACC yachts are discussed. Numerical aspects of the inviscid panel code and details of the free-surface boundary condition are included, along with enhancements developed specifically for the '92 America's Cup defense. Extensive code validation using wind tunnel and towing tank experimental data address several areas of interest to the yacht designer. Lift and induced drag at zero Froude number are studied via a series of isolated fin/bulb/winglet appendages. An isolated surface piercing foil is used to evaluate simple lift/freesurface interactions. For complete IACC yacht models, upright wave resistance is investigated, as well as lift and induced drag at heel and yaw. The excellent correlation obtained for these cases demonstrates the value of this linear free-surface methodology for use in designing high performance sailing yachts.

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Mohiuddin, A. K. M., Altab Hossain, Ataur Rahman, and Yulfian Aminanda. "Tractive Efficiency Analysis for an Intelligent Air-Cushion Tracked Vehicle." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37516.

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This study presents the tractive efficiency of an intelligent air-cushion tracked vehicle (IACTV) working on swamp terrain. Based on the total power consumption and optimum load distribution for IACTV, two main issues are studied in this paper. First, a theoretical model is developed for optimizing total power consumption of the vehicle and tractive efficiency has been investigated with the effects of load distribution on the vehicle performance. Secondly, the vehicle has the ability to response for the changeable cushion pressure based on the cushion height from the ground. The system is effective to control the intelligent air–cushion system by measuring the vehicle tractive efficiency (TE), volume flow rate (Q), cushion height (CH) and cushion pressure (CP). Experiment and simulation results showed that the optimal power consumption can be obtained and maintained by using the designed fuzzy logic system (FLS) with the load distribution ratio of 0.2 and tractive efficiency of 62%. The mean relative error of actual and predicted values from the FLS model on tractive efficiency is found as 9.2%, which is less than the acceptable limit of 10%. The goodness of fit of the prediction value from FLS is found as 0.96.

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Звіти організацій з теми "IACT Analysis"

Spina, John F. Integrated RF Sensor Signal/Data Processing Information Analysis Center (IAC). Fort Belvoir, VA: Defense Technical Information Center, February 2002. http://dx.doi.org/10.21236/ada401075.

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Kornfeld, Judith R. Specification and Preliminary Validation of IAT (Integrated Analysis Techniques) Methods: Executive Summary. Fort Belvoir, VA: Defense Technical Information Center, March 1985. http://dx.doi.org/10.21236/ada162509.

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Doane, Thomas R., John C. Allen, and Donald B. McGonigle. Feasibility Survey of Pilot Prevention and Health Intervention Strategies Management Information Analysis Center (PRHISM-IAC). Fort Belvoir, VA: Defense Technical Information Center, June 1993. http://dx.doi.org/10.21236/ada268865.

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Chamberlain, C. A., and K. Lochhead. Data modeling as applied to surveying and mapping data. Natural Resources Canada/CMSS/Information Management, 1988. http://dx.doi.org/10.4095/331263.

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The Geodetic Survey Division of the Canada Centre for Surveying is replacing the National Geodetic Data Base (NGDB) with the National Geodetic Information System (NGIS). For the NGIS to be successful, it was recognized that a sound, well engineered data mode was essential. The methodology chosen to design the data mode! was Nijssen's Information Analysis Methodology (NIAM), a binary modeling technique that is supported by a Computer Aided Software Engineering (CASE) tool, PC-IAST. An NGIS prototype has also been developed using Digital Equipment of Canada's Relational Database (Rdb) management system and COGNOS Corporations POWERHOUSE 4th generation language. This paper addresses the need for, and the advantages of using a strong engineering approach to data modeling and describes the use of the NIAM methodology in NGIS development. The paper identifies the relationship between the data mode!, data structures, the design and development of a database and the use of automated tools for systems development. In conclusion, critical success factors for the continuation of the N.G.I.S. developments are identified and the benefits that will accrue are enumerated.

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