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Journal articles on the topic 'Event Tracing'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Vergé, Adrien, Naser Ezzati-Jivan, and Michel R. Dagenais. "Hardware-assisted software event tracing." Concurrency and Computation: Practice and Experience 29, no. 10 (March 6, 2017): e4069. http://dx.doi.org/10.1002/cpe.4069.

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Solanki, Monika, and Christopher Brewster. "Enhancing Visibility in EPCIS Governing Agri-Food Supply Chains via Linked Pedigrees." International Journal on Semantic Web and Information Systems 10, no. 3 (July 2014): 45–73. http://dx.doi.org/10.4018/ijswis.2014070102.

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Data integration for the purposes of tracking, tracing and transparency are important challenges in the agri-food supply chain. The Electronic Product Code Information Services (EPCIS) is an event-oriented GS1 standard that aims to enable tracking and tracing of products through the sharing of event-based datasets that encapsulate the Electronic Product Code (EPC). In this paper, the authors propose a framework that utilises events and EPCs in the generation of “linked pedigrees” - linked datasets that enable the sharing of traceability information about products as they move along the supply chain. The authors exploit two ontology based information models, EEM and CBVVocab within a distributed and decentralised framework that consumes real time EPCIS events as linked data to generate the linked pedigrees. The authors exemplify the usage of linked pedigrees within the fresh fruit and vegetables supply chain in the agri-food sector.

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3

Bahmani, Amir, and Frank Mueller. "Scalable communication event tracing via clustering." Journal of Parallel and Distributed Computing 109 (November 2017): 230–44. http://dx.doi.org/10.1016/j.jpdc.2017.06.008.

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4

Perks, O. F. J., D. A. Beckingsale, S. D. Hammond, I. Miller, J. A. Herdman, A. Vadgama, A. H. Bhalerao, L. He, and S. A. Jarvis. "Towards Automated Memory Model Generation Via Event Tracing." Computer Journal 56, no. 2 (June 4, 2012): 156–74. http://dx.doi.org/10.1093/comjnl/bxs051.

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5

Carroll, Mary, Katja Weimar, Monique Flecken, Monique Lambert, and Christiane von Stutterheim. "Tracing trajectories." Language, Interaction and Acquisition 3, no. 2 (December 19, 2012): 202–30. http://dx.doi.org/10.1075/lia.3.2.03car.

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Although the typological contrast between Romance and Germanic languages as verb-framed versus satellite-framed (Talmy 1985) forms the background for many empirical studies on L2 acquisition, the inconclusive picture to date calls for more differentiated, fine-grained analyses. The present study goes beyond explanations based on this typological contrast and takes into account the sources from which spatial concepts are mainly derived in order to shape the trajectory traced by the entity in motion when moving through space: the entity in V-languages versus features of the ground in S-languages. It investigates why advanced French learners of English and German have difficulty acquiring the use of spatial concepts typical of the L2s to shape the trajectory, although relevant concepts can be expressed in their L1. The analysis compares motion event descriptions, based on the same sets of video clips, of L1 speakers of the three languages to L1 French-L2 English and L1 French-L2 German speakers, showing that the learners do not fully acquire the use of L2-specific spatial concepts. We argue that encoded concepts derived from the entity in motion vs. the ground lead to a focus on different aspects of motion events, in accordance with their compatibility with these sources, and are difficult to restructure in L2 acquisition.

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Búrdalo, Luis, Andrés Terrasa, Vicente Julián, Javier Bajo, Sara Rodríguez, and Juan Manuel Corchado. "Dynamic Monitoring in PANGEA Platform Using Event-Tracing Mechanisms." Computing and Informatics 36, no. 5 (2017): 1019–40. http://dx.doi.org/10.4149/cai_2017_5_1019.

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7

Búrdalo Rapa, Luis, Andrés Terrasa Barrena, Ana García Fornes, and Agustín Espinosa Minguet. "Supporting social knowledge in multiagent systems through event tracing." Journal of Physical Agents (JoPha) 3, no. 3 (2009): 19–23. http://dx.doi.org/10.14198/jopha.2009.3.3.04.

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8

Mohror, Kathryn, and Karen L. Karavanic. "Trace profiling: Scalable event tracing on high-end parallel systems." Parallel Computing 38, no. 4-5 (April 2012): 194–225. http://dx.doi.org/10.1016/j.parco.2011.12.003.

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9

Ilsche, Thomas, Joseph Schuchart, Jason Cope, Dries Kimpe, Terry Jones, Andreas Knüpfer, Kamil Iskra, Robert Ross, Wolfgang E. Nagel, and Stephen Poole. "Optimizing I/O forwarding techniques for extreme-scale event tracing." Cluster Computing 17, no. 1 (June 20, 2013): 1–18. http://dx.doi.org/10.1007/s10586-013-0272-9.

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10

Li, Wan Gao, Xiao Le Liu, and De Chang Sun. "Research on Visual Production Process Control System Oriented to Discrete Manufacturing." Key Engineering Materials 474-476 (April 2011): 1914–19. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.1914.

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Firstly, the requirements of production control and the features of discrete manufacturing process were researched , the production process control system architecture was built. Then, the key technologies used in the system realization were studied. Automatic identification technology was used in data acquisition; product tracking and event tracking technologies were used to implement production monitor, abnormal monitor respectivly in application server; Web technology was used in production statistics and analysis in presentation layer. Data acquisition and statement analysis implementation were separately based on the Windows and Web application of NET platform; products tracing and event tracking implementtation were based on the configuration visual software platform: GE Cimplicity. Every layer is distinct and seamless integration in the entire system, the whole architecture has strongly robustness and expandability. Finally, a case proved the validity of this system.

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11

Malyshev, E., and T. Malysheva. "THE USE OF DIGITAL TECHNOLOGY IN SUPPLY CHAIN MANAGEMENT." Transbaikal state university journal 27, no. 3 (2021): 113–18. http://dx.doi.org/10.21209/2227-9245-2021-27-3-113-118.

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This article provides an overview of the event management concept in supply chains. The management of organizational change in supply chains can be based on five basic approaches. Supply Chain Event Management is the creation and management of supply chain events. The concept of SCEM involves tracing objects, which are defined as reference points, across multiple events. SCEM is an integration of the following aspects: monitoring; notification; modelling; control; measurement. The study shows that this system is beneficial for supply chain management

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12

Cao, Chenhong, Wen Liu, Wei Dong, and Jiajun Bu. "TOC: Lightweight Event Tracing Using Online Compression for Networked Embedded Systems." International Journal of Distributed Sensor Networks 11, no. 11 (January 2015): 450568. http://dx.doi.org/10.1155/2015/450568.

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13

Vale, Simon S., Ian C. Fuller, Jonathan N. Procter, Les R. Basher, and John R. Dymond. "Storm event sediment fingerprinting for temporal and spatial sediment source tracing." Hydrological Processes 34, no. 15 (June 16, 2020): 3370–86. http://dx.doi.org/10.1002/hyp.13801.

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14

Juras, Roman, Jirka Pavlásek, Tomáš Vitvar, Martin Šanda, Jirka Holub, Jakub Jankovec, and Miloslav Linda. "Isotopic tracing of the outflow during artificial rain-on-snow event." Journal of Hydrology 541 (October 2016): 1145–54. http://dx.doi.org/10.1016/j.jhydrol.2016.08.018.

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15

Madias, John E. "Artifacts posing as premature ventricular beats in an “event recorder” tracing." Journal of Electrocardiology 43, no. 6 (November 2010): 689–90. http://dx.doi.org/10.1016/j.jelectrocard.2010.01.002.

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16

Mohamed Mostafa, Ayman, Saleh N. Almuayqil, and Wael Said. "An E-Business Event Stream Mechanism for Improving User Tracing Processes." Computers, Materials & Continua 69, no. 1 (2021): 767–84. http://dx.doi.org/10.32604/cmc.2021.018236.

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17

Foets, Jasper, Carlos E. Wetzel, Núria Martínez-Carreras, Adriaan J. Teuling, Jean-François Iffly, and Laurent Pfister. "Technical note: A time-integrated sediment trap to sample diatoms for hydrological tracing." Hydrology and Earth System Sciences 24, no. 10 (October 5, 2020): 4709–25. http://dx.doi.org/10.5194/hess-24-4709-2020.

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Abstract. Diatoms, microscopic single-celled algae, are present in almost all habitats containing water (e.g. streams, lakes, soil and rocks). In the terrestrial environment, their diversified species distributions are mainly controlled by physiographical factors and anthropic disturbances which makes them useful tracers in catchment hydrology. In their use as a tracer, diatoms are generally sampled in streams by means of an automated sampling method; as a result, many samples must be collected to cover a whole storm run-off event. As diatom analysis is labour-intensive, a trade-off has to be made between the number of sites and the number of samples per site. In an attempt to reduce this sampling effort, we explored the potential for the Phillips sampler, a time-integrated mass-flux sampler, to provide a representative sample of the diatom assemblage of a whole storm run-off event. We addressed this by comparing the diatom community composition of the Phillips sampler to the composite community collected by automatic samplers for three events. Non-metric multidimensional scaling (NMDS) showed that, based on the species composition, (1) all three events could be separated from each other, (2) the Phillips sampler was able to sample representative communities for two events and (3) significantly different communities were only collected for the third event. These observations were generally confirmed by analysis of similarity (ANOSIM), permutational multivariate analysis of variance (PERMANOVA), and the comparison of species relative abundances and community-derived indices. However, sediment data from the third event, which was sampled with automatic samplers, showed a large amount of noise; therefore, we could not verify if the Phillips sampler sampled representative communities or not. Nevertheless, we believe that this sampler could not only be applied in hydrological tracing using terrestrial diatoms, but it might also be a useful tool in water quality assessment.

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18

Roberts, Carl W. "Tracing Formative Influences on Event Recall: A Test of Mannheim's Sensitivity Hypothesis." Social Forces 65, no. 1 (September 1986): 74. http://dx.doi.org/10.2307/2578936.

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19

Roberts, C. W. "Tracing Formative Influences on Event Recall: A Test of Mannheim's Sensitivity Hypothesis." Social Forces 65, no. 1 (September 1, 1986): 74–86. http://dx.doi.org/10.1093/sf/65.1.74.

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20

Węgrzyn, Mariusz, and Janusz Sosnowski. "Tracing Fault Effects in FPGA Systems." International Journal of Electronics and Telecommunications 60, no. 1 (March 1, 2014): 92–97. http://dx.doi.org/10.2478/eletel-2014-0012.

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Abstract The paper presents the extent of fault effects in FPGA based systems and concentrates on transient faults (induced by single event upsets - SEUs) within the configuration memory of FPGA. An original method of detailed analysis of fault effect propagation is presented. It is targeted at microprocessor based FPGA systems using the developed fault injection technique. The fault injection is performed at HDL description level of the microprocessor using special simulators and developed supplementary programs. The proposed methodology is illustrated for soft PicoBlaze microprocessor running 3 programs. The presented results reveal some problems with fault handling at the software level.

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21

Olayiwola, O. M., K. S. Adekeye, F. S. Apantaku, A. O. Ajayi, O. A. Wale-Orojo, I. A. Ogunsola, and B. Hammed. "INTEGRATION OF BAYESIAN MODEL AND ADAPTIVE CLUSTERED SAMPLING INTO CONTACT TRACING TO CURB THE SPREAD OF COVID -19 CASES." FUDMA JOURNAL OF SCIENCES 5, no. 1 (June 25, 2021): 76–84. http://dx.doi.org/10.33003/fjs-2021-0501-539.

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Covid-19 is a communicable virus that causes serious illness (Severe acutepiratory syndrome (SARS)) and middle east respiratory syndrome (MARS)). İts outbreak started in Wuhan, China on December 8, 2019. Fever, cough, tiredness are its signs and symptoms and appear between two to fourteen days after exposure. The severity of COVID-19 can include complications; pneumonia, heart problems, acute kidney injuries. Covid-19 careers should be identified in order to curb the spread of the virus within a population. In this regards, contact tracing is the current technique in use to identify and track the Covid-19 carriers. The aim is to curb the spread of the virus within the population. In order to achieve this goal effectively, appropriate technique is required in the identification of Covid-19 carriers and Modeling. It is known that Covid-19 carriers are hidden, clustered and very difficult to identify in the population. At this point, the Adaptive Cluster Sampling, which is a specialized sampling for identification of hidden and clustered event and Bayesian Model, comes to the practice. Therefore, in this study, Adaptive Cluster Sampling which is capable of tracking hidden and clustered events and Bayesian Model are integrated in contact tracing, and the application on how this technique is used is included

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22

Cho, Kwang-Hyun, and Jong-Tae Lim. "On-line tracing supervisory control of discrete-event dynamic systems based on outlooking." Automatica 35, no. 10 (October 1999): 1725–29. http://dx.doi.org/10.1016/s0005-1098(99)00084-9.

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23

Przybyło, Jaromir, and Mirosław Jabłoński. "Ray-Tracing-Based Event Detection and 3D Visualization for Automated Video Surveillance System." Image Processing & Communications 20, no. 2 (June 1, 2015): 29–39. http://dx.doi.org/10.1515/ipc-2015-0032.

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Abstract Automated and intelligent video surveillance systems play important role in current home care and facilities security applications. Among many research problems is graphical visualization of semantic messages to the human operator that he can percept information in more natural way. The other essential research question is how to recognize 3D objects and their state on the monitored scene only from their views (2D images from the camera). In this paper we continue our previous work on data fusion in visualization of 3D scene semantic model and propose to recognize events and states of scene objects under surveillance in an automatic way using feedback provided by the renderer. We developed ray-tracing based visualization for surveillance system, that is capable of recognizing object’s state and at the same time present relevant information to the human operator.

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24

Tan, Jun, Peng Song, Jinshan Li, Lei Wang, Mengxuan Zhong, and Xiaobo Zhang. "Combined adaptive multiple subtraction based on optimized event tracing and extended wiener filtering." Journal of Ocean University of China 16, no. 3 (May 10, 2017): 411–21. http://dx.doi.org/10.1007/s11802-017-3279-7.

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25

Mathur, Mansi, Sudarshan Ramaswamy, Mitilesh Sharma, Meera Dhuria, Sujata Arya, Himanshu Chauhan, S. K. Jain, and Sujeet Kumar Singh. "Inter-state cross border superspreading event of SARS-CoV2 in Central India, May 2020." International Journal of Research in Medical Sciences 9, no. 8 (July 28, 2021): 2369. http://dx.doi.org/10.18203/2320-6012.ijrms20213083.

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Background: During the mid-weeks of May 2020, a superspreading event occurred in a town of Central India, where breaking bread together led to an outburst of COVID-19 cases. This led to a sudden increase of the daily average number of cases later on in the month.Methods: An epidemiological investigation was done to investigate the cause. Process of the epidemic investigation done has been described under three parts namely - Case finding, Contact tracing, Public health response.Results: Our epidemiological investigation and contact tracing of the index case confirmed a superspreading event of COVID-19 which occurred due to multiple social gatherings during mid weeks of May 2020. It was estimated that 118 cases belonged to G0 and 94 cases belonged to G1 generation of the index case.Conclusions: Most likely source of infection to the index case was from the guests who came for a social gathering on May 11, 2020 (lockdown 3) from a village across the border in Rajasthan, a high COVID-19 prevalent zone (Orange) to a low COVID-19 prevalent zone (Green).

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O'Connell, James, Manzar Abbas, Sarah Beecham, Jim Buckley, Muslim Chochlov, Brian Fitzgerald, Liam Glynn, et al. "Best Practice Guidance for Digital Contact Tracing Apps: A Cross-disciplinary Review of the Literature." JMIR mHealth and uHealth 9, no. 6 (June 7, 2021): e27753. http://dx.doi.org/10.2196/27753.

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Background Digital contact tracing apps have the potential to augment contact tracing systems and disrupt COVID-19 transmission by rapidly identifying secondary cases prior to the onset of infectiousness and linking them into a system of quarantine, testing, and health care worker case management. The international experience of digital contact tracing apps during the COVID-19 pandemic demonstrates how challenging their design and deployment are. Objective This study aims to derive and summarize best practice guidance for the design of the ideal digital contact tracing app. Methods A collaborative cross-disciplinary approach was used to derive best practice guidance for designing the ideal digital contact tracing app. A search of the indexed and gray literature was conducted to identify articles describing or evaluating digital contact tracing apps. MEDLINE was searched using a combination of free-text terms and Medical Subject Headings search terms. Gray literature sources searched were the World Health Organization Institutional Repository for Information Sharing, the European Centre for Disease Prevention and Control publications library, and Google, including the websites of many health protection authorities. Articles that were acceptable for inclusion in this evidence synthesis were peer-reviewed publications, cohort studies, randomized trials, modeling studies, technical reports, white papers, and media reports related to digital contact tracing. Results Ethical, user experience, privacy and data protection, technical, clinical and societal, and evaluation considerations were identified from the literature. The ideal digital contact tracing app should be voluntary and should be equitably available and accessible. User engagement could be enhanced by small financial incentives, enabling users to tailor aspects of the app to their particular needs and integrating digital contact tracing apps into the wider public health information campaign. Adherence to the principles of good data protection and privacy by design is important to convince target populations to download and use digital contact tracing apps. Bluetooth Low Energy is recommended for a digital contact tracing app's contact event detection, but combining it with ultrasound technology may improve a digital contact tracing app's accuracy. A decentralized privacy-preserving protocol should be followed to enable digital contact tracing app users to exchange and record temporary contact numbers during contact events. The ideal digital contact tracing app should define and risk-stratify contact events according to proximity, duration of contact, and the infectiousness of the case at the time of contact. Evaluating digital contact tracing apps requires data to quantify app downloads, use among COVID-19 cases, successful contact alert generation, contact alert receivers, contact alert receivers that adhere to quarantine and testing recommendations, and the number of contact alert receivers who subsequently are tested positive for COVID-19. The outcomes of digital contact tracing apps' evaluations should be openly reported to allow for the wider public to review the evaluation of the app. Conclusions In conclusion, key considerations and best practice guidance for the design of the ideal digital contact tracing app were derived from the literature.

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Druckman, Daniel. "Time-Series Designs and Analyses." International Negotiation 9, no. 3 (2004): 397–414. http://dx.doi.org/10.1163/1571806053498788.

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AbstractThis article describes the way time-series designs are used in research on international negotiation and related processes. Both quantitative and qualitative applications are discussed. One use of the techniques is to predict known outcomes of historical cases of negotiation. Both inductive and deductive approaches have been used in studies that evaluate alternative models of the way that negotiators respond to each other through the course of the talks. Another use of the techniques is to evaluate the impacts of such interventions as mediations or combat (referred to as interruptions) on the dynamics of conflict between nations. A third approach involves probabilistic forecasting with Bayesian analysis. This consists of revising initial probabilities of events (coups, peace agreements) based on current information about indicators that signal the occurrence of the event. Qualitative techniques have also been used to capture changes in conflict processes over time. These include charting changes in typological categories or in the use of influence strategies used by national actors in enduring rivalries. They also include tracing of paths to agreement or stalemate in negotiation, documenting progress in small-group dialogues, and developing chains of communication leading to peace agreements. By combining several of these techniques an analyst can draw conclusions about the likelihood that an event will occur (Bayesian analysis), its impact on a process (interrupted time series), and the way it emerged from prior events (process tracing).

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Bruno, A., O. Adriani, G. C. Barbarino, G. A. Bazilevskaya, R. Bellotti, M. Boezio, E. A. Bogomolov, et al. "The May 17, 2012 solar event: back-tracing analysis and flux reconstruction with PAMELA." Journal of Physics: Conference Series 675, no. 3 (February 5, 2016): 032006. http://dx.doi.org/10.1088/1742-6596/675/3/032006.

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29

Hauptfleisch, Temple. "The Seismology of Theatre: Tracing the shock waves of a theatrical event in society." South African Theatre Journal 21, no. 1 (January 2007): 253–71. http://dx.doi.org/10.1080/10137548.2007.9687866.

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Schwing, Patrick T., Jeffrey P. Chanton, Isabel C. Romero, David J. Hollander, Ethan A. Goddard, Gregg R. Brooks, and Rebekka A. Larson. "Tracing the incorporation of carbon into benthic foraminiferal calcite following the Deepwater Horizon event." Environmental Pollution 237 (June 2018): 424–29. http://dx.doi.org/10.1016/j.envpol.2018.02.066.

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Wilson, Arun, Anup Warrier, and Balram Rathish. "Contact tracing: a lesson from the Nipah virus in the time of COVID-19." Tropical Doctor 50, no. 3 (May 31, 2020): 174–75. http://dx.doi.org/10.1177/0049475520928217.

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Without a vaccine or proven therapeutic options in COVID-19, the World Health Organization (WHO) recommends a combination of measures: rapid diagnosis and immediate isolation of cases; rigorous contact tracing; and precautionary self-isolation of close contacts to curb the spread of COVID-19. During a Nipah outbreak in Kerala, India in 2019, it was confined to a single case. The authors were involved in the in-hospital contact tracing. With a single patient producing a contact list of 98 in a healthcare setting, the implications in a community setting during a pandemic of the scale of COVID-19 are huge but it proves that early and rigorous tracing with quarantining is an effective strategy to limit clusters. We believe that if the public is encouraged to maintain their own contact list on a daily basis, it would help in significantly reducing the time and effort invested into contact tracing in the event of a person contracting COVID-19.

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Gutak, Ja M., and Dmitry Aleksandrovitch Ruban. "Catastrophes versus events in the geologic past: how does the scale matter?" Cadernos do Laboratorio Xeolóxico de Laxe. Revista de Xeoloxía Galega e do Hercínico Peninsular 37 (December 9, 2013): 163–79. http://dx.doi.org/10.17979/cadlaxe.2013.37.0.3589.

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Catastrophes were common in the geologic past, but their distinction from other events is necessary. Besides magnitude (strength), scales of events are important in a solution of this task. Several examples, which involve Late Paleozoic and Quaternary megafloods, Hadean and Phanerozoic extraterrestrial impacts, and Phanerozoic mass extinctions, ensure that scaling by spatial extent and diversity of consequences facilitates tracing the boundary between catastrophes and “ordinary” events. This boundary, however, is dynamic and its position depends on our subjective needs. Considerations of the geologic past should not mix catastrophes of different scales. The event analysis helps to avoid such a pitfall, and, therefore, it should be preferred to neocatastrophism in modern geoscience.

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Mulimani, neshwari, and Aziz Makandar. "Sports Video Annotation and Multi- Target Tracking using Extended Gaussian Mixture model." International Journal of Recent Technology and Engineering 10, no. 1 (May 30, 2021): 1–6. http://dx.doi.org/10.35940/ijrte.a5589.0510121.

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Video offers solutions to many of the traditional problems with coach, trainer, commenter, umpires and other security issues of modern team games. This paper presents a novel framework to perform player identification and tracking technique for the sports (Kabaddi) with extending the implementation towards the event handling process which expands the game analysis of the third umpire assessment. In the proposed methodology, video preprocessing has done with Kalman Filtering (KF) technique. Extended Gaussian Mixture Model (EGMM) implemented to detect the object occlusions and player labeling. Morphological operations have given the more genuine results on player detection on the spatial domain by applying the silhouette spot model. Team localization and player tracking has done with Robust Color Table (RCT) model generation to classify each team members. Hough Grid Transformation (HGT) and Region of Interest (RoI) method has applied for background annotation process. Through which each court line tracing and labeling in the half of the court with respect to their state-of-art for foremost event handling process is performed. Extensive experiments have been conducted on real time video samples to meet out the all the challenging aspects. Proposed algorithm tested on both Self Developed Video (SDV) data and Real Time Video (RTV) with dynamic background for the greater tracking accuracy and performance measures in the different state of video samples.

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Romankiewicz, Tanja. "ROOM FOR IDEAS: TRACING NON-DOMESTIC ROUNDHOUSES." Antiquaries Journal 98 (September 2018): 17–42. http://dx.doi.org/10.1017/s0003581518000148.

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Iron Age studies in Britain operate in a world populated by roundhouses. Post-ring evidence is generally interpreted in domestic contexts. However, research on later prehistoric roundhouses in north-east Scotland has identified a small yet significant number of round structures in unusual locations, with unusual architectural details and a distinct lack of domestic material. Some of these relate to Chalcolithic and Early Bronze Age stone circles, for which Richard Bradley’s work in the wider region has highlighted progressive biographies of construction and reuse. This paper, rooted in architectural design theory, selects a particular case study – the multiple timber post-rings at Candle Stane (in Aberdeenshire) – to highlight the complexities in interpreting these fascinating and enigmatic buildings. The architectural approach develops alternative reconstructions that lead to new perspectives on later prehistoric architecture as event-based and concerned with process. These processes only gradually lead to an architectural end-product, which displays distinctly non-domestic connotations. The research not only highlights the usefulness of data derived from rescue work for academic study, but the advocated approach of reconstructing in alternatives also lends itself to developing innovative approaches in Higher Education to teach visual competence.

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Mubeen, Saad, Jukka Mäki-Turja, and Mikael Sjödin. "Tracing event chains for holistic response-time analysis of component-based distributed real-time systems." ACM SIGBED Review 8, no. 3 (September 2011): 48–51. http://dx.doi.org/10.1145/2038617.2038628.

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Nakajima, Yoshio. "Source localization of event-related potentials in man by means of the dipole tracing method." Neuroscience Research Supplements 11 (January 1990): S41. http://dx.doi.org/10.1016/0921-8696(90)90577-p.

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DeNora, Tia, and Gary Ansdell. "Music in action: tinkering, testing and tracing over time." Qualitative Research 17, no. 2 (April 2017): 231–45. http://dx.doi.org/10.1177/1468794116682824.

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In this article we draw on a recent, six-year ethnographic study of community music therapy and mental health to highlight strategies and techniques for documenting music’s role in processes of change. We place these strategies in dialogue with the ethnographic work on arts and crafts by Paul Atkinson. In tandem with Atkinson, we propose a ‘slow’ approach focused on micro-processes of musical/para-musical bricolage whereby things are made and transformed over time. A three-cornered strategy in support of this approach is described: (1) a focus on musical-practical tinkering, (2) a focus on the modification and contention or testing of idiocultural musical space and, (3) two specific techniques for tracing music-related change, the music therapy ‘index’ and the ‘musical event’ schema.

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Wang, Bin, Volker Dirks, Patrice Guillaume, François Audebert, and Duryodhan Epili. "A 3D subsalt tomography based on wave-equation migration-perturbation scans." GEOPHYSICS 71, no. 2 (March 2006): E1—E6. http://dx.doi.org/10.1190/1.2187720.

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We have developed a simple but practical methodology for updating subsalt velocities using wave-equation, migration-perturbation scans. For the sake of economy and scalability (with respect to full source-receiver migration) and accuracy (with respect to common-azimuth migration), we use shot-profile, wave-equation migration. As input for subsalt-velocity analysis, we provide wave-equation migration scans with velocity scanning limited to the subsalt sediments. Throughout the migration-scan sections, we look for the best focusing or structural positioning of characteristic seismic events. The picking on the migration stacks selects the value of the best perturbation attribute (alpha-scaling factor) along with the corresponding position and local dip for the chosen seismic events. The associated, locally coherent events are then demigrated to the base of the salt horizon. Our key observation is that this process is theoretically equivalent to performing a datuming to a base of salt followed by subsalt migration of the redatumed data perturbed-velocity profiles. Thanks to this implicit redatuming of shot profiles, no ray tracing through the salt body is required. Thus, the events picked on the subsalt-velocity scans only need to be demigrated to the base of salt. For the event demigration we use 3D specular-ray tracing up to the base of the salt horizon within a predefined range of reflection angles. Event demigration produces model-independent data — time and time slope — that are then kinematically migrated using the current tomographic-inversion working model. To find a final-velocity model that will flatten best the remigrated events on common image point (CIP) angle gathers, we use the same set of demigrated observation data as the input data set for several nonlinear iterations of 3D tomographic inversion.

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Uchikawa, Yuta, Les Cowley, Hisashi Hayakawa, David M. Willis, and F. Richard Stephenson. "Provenance of the cross sign of 806 in the Anglo-Saxon Chronicle: a possible lunar halo over continental Europe?" History of Geo- and Space Sciences 11, no. 1 (April 20, 2020): 81–92. http://dx.doi.org/10.5194/hgss-11-81-2020.

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Abstract. While graphical records of astronomical/meteorological events before telescopic observations are of particular interest, they have frequently undergone multiple instances of copying and may have been modified from the original. Here, we analyse a graphical record of the cross sign of 806 CE in the Anglo-Saxon Chronicle (ASC), which has been considered one of the earliest datable halo drawings in British records, whereas another cross sign in 776 CE has been associated with the aurora. However, philological studies have revealed the later 806 event is derived from continental European annals. Here, records and drawings for the 806 event have been philologically traced back to mid-ninth-century continental European manuscripts (MSS) and the probable observational site identified as the area of Sens in northern France. The possible lunar halos at that time have been comprehensively examined by numerical ray tracing. Combined with calculations of twilight sky brightness, they identify a visibility window supporting monastic observation. Cruciform halos are shown to be fainter and rarer than brighter and more commonplace lunar halos. Physically credible cloud ice crystal variations can reproduce all the manuscript renditions. The manuscript records prove less-than-desirable detail, but what is presented is fully consistent with a lunar-halo interpretation. Finally, the possible societal impacts of such celestial events have been mentioned in the context of contemporary coins in Anglo-Saxon England and the Carolingian Empire. These analyses show that we need to trace their provenance back as far as possible, to best reconstruct the original event, even if graphical records are available for given astronomical/meteorological events.

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Amer, Hala. "Middle East Respiratory Syndrome Coronavirus, Saudi Arabia, 2017 Outbreak: Super-Spreading Event and Control Measures." Infection Control & Hospital Epidemiology 41, S1 (October 2020): s317. http://dx.doi.org/10.1017/ice.2020.911.

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Background: The hallmark of Middle East respiratory syndrome coronavirus (MERS-CoV) disease is the ability to cause major healthcare-associated outbreaks with superspreading events leading to massive transmission and excessive morbidity and mortality. This abstract provides overview of MERS-CoV multi-healthcare facilities outbreak in Riyadh in June 2017, with focus on cluster reported and the control measures taken at King Saud Medical City. The outbreak began with a patient who presented with acute renal failure requiring hemodialysis and became a MERS-CoV superspreader, igniting the cluster of cases in several hospitals in King Saud Medical City. Methods: For epidemiologic investigation, a case was defined as any patient with laboratory-confirmed MERS-CoV infection with connection to the affected healthcare facilities. Contact tracing and testing were performed according to the Ministry of Health (MOH) guidelines. MERS-CoV testing was recommended for HCWs who had unprotected close contact with a confirmed case. Considering the superspreading phenomena, contact tracing was included all persons attended the same area with the positive case either as a patient, an HCW, or a patient’s visitor or companion. Laboratory confirmation was conducted using real-time RT-PCR. Genome sequencing and phylogenetic analysis were performed for available MERS-CoV rRT-PCR–positive samples by the CDC. The infection control measures applied included decreasing patient load through downsizing emergency department acceptance, maintaining low elective services, limiting inpatient admissions, and encouraging discharge. Early detection and quarantining of any suspected cases took place through extensive contact tracing, properly triaging all patients upon admission, consistent monitoring of inpatients and HCWs for any emerging acute respiratory illness, allocation of more single rooms inside the facility and staff dormitory, and extending the services of virology laboratory to get timely results. Further measures consisted of extensive education on infection control practices, monitoring healthcare worker adherence, reassuring the public by maintaining transparency of published reports, and launching a hotline to respond to HCW concerns. Moreover, travel restrictions applied to any person with a history of exposure to a conﬁrmed MERS-CoV case during the 2-week monitoring period. Results: Overall, 44 cases of MERS-CoV infection were reported from 3 simultaneous clusters during the 2017 Riyadh outbreak, including 11 fatal cases. Among all of the cases, 29 cases were reported at King Saud Medical City. The outbreak at KSMC required 30 days to be controlled. Conclusions: High vigilance for early detection is a key control measure. To be more sensitive, point-of-care MERS-CoV testing is required because clinical suspicion is challenging in patients presenting with acute renal failure.Funding: NoneDisclosures: None

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Boselli, A., M. Fossati, G. Consolandi, P. Amram, C. Ge, M. Sun, J. P. Anderson, et al. "A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)." Astronomy & Astrophysics 620 (December 2018): A164. http://dx.doi.org/10.1051/0004-6361/201833914.

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We observed the late-type peculiar galaxy NGC 4424 during the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band Hα+[NII] imaging survey of the Virgo cluster carried out with MegaCam at the Canada-French-Hawaii Telescope (CFHT). The presence of a ∼110 kpc (in projected distance) HI tail in the southern direction indicates that this galaxy is undergoing a ram pressure stripping event. The deep narrow-band image revealed a low surface brightness (Σ(Hα) ≃ 4 × 10−18 erg s−1 cm−2 arcsec−2) ionised gas tail ∼10 kpc in length extending from the centre of the galaxy to the north-west, thus in the direction opposite to the HI tail. Chandra and XMM X-rays data do not show a compact source in the nucleus or an extended tail of hot gas, while IFU spectroscopy (MUSE) indicates that the gas is photo-ionised in the inner regions and shock-ionised in the outer parts. Medium-resolution (MUSE) and high-resolution (Fabry-Perot) IFU spectroscopy confirms that the ionised gas is kinematically decoupled from the stellar component and indicates the presence of two kinematically distinct structures in the stellar disc. The analysis of the SED of the galaxy indicates that the activity of star formation was totally quenched in the outer disc ∼250–280 Myr ago, while only reduced by ∼80% in the central regions. All this observational evidence suggests that NGC 4424 is the remnant of an unequal-mass merger that occurred ≲500 Myr ago when the galaxy was already a member of the Virgo cluster, and is now undergoing a ram pressure stripping event that has removed the gas and quenched the activity of star formation in the outer disc. The tail of ionised gas probably results from the outflow produced by a central starburst fed by the collapse of gas induced by the merging episode. This outflow is sufficiently powerful to overcome the ram pressure induced by the intracluster medium on the disc of the galaxy crossing the cluster. This analysis thus suggests that feedback can participate in the quenching process of galaxies in high-density regions.

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Chauris, Hervé, Mark S. Noble, Gilles Lambaré, and Pascal Podvin. "Migration velocity analysis from locally coherent events in 2‐D laterally heterogeneous media, Part I: Theoretical aspects." GEOPHYSICS 67, no. 4 (July 2002): 1202–12. http://dx.doi.org/10.1190/1.1500382.

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We present a new method based on migration velocity analysis (MVA) to estimate 2‐D velocity models from seismic reflection data with no assumption on reflector geometry or the background velocity field. Classical approaches using picking on common image gathers (CIGs) must consider continuous events over the whole panel. This interpretive step may be difficult—particularly for applications on real data sets. We propose to overcome the limiting factor by considering locally coherent events. A locally coherent event can be defined whenever the imaged reflectivity locally shows lateral coherency at some location in the image cube. In the prestack depth‐migrated volume obtained for an a priori velocity model, locally coherent events are picked automatically, without interpretation, and are characterized by their positions and slopes (tangent to the event). Even a single locally coherent event has information on the unknown velocity model, carried by the value of the slope measured in the CIG. The velocity is estimated by minimizing these slopes. We first introduce the cost function and explain its physical meaning. The theoretical developments lead to two equivalent expressions of the cost function: one formulated in the depth‐migrated domain on locally coherent events in CIGs and the other in the time domain. We thus establish direct links between different methods devoted to velocity estimation: migration velocity analysis using locally coherent events and slope tomography. We finally explain how to compute the gradient of the cost function using paraxial ray tracing to update the velocity model. Our method provides smooth, inverted velocity models consistent with Kirchhoff‐type migration schemes and requires neither the introduction of interfaces nor the interpretation of continuous events. As for most automatic velocity analysis methods, careful preprocessing must be applied to remove coherent noise such as multiples.

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Yoshimura, Nahoko, Mitsuru Kawamura, and Tatsuya Sato. "The source generator of event-related potentials with recognizing facial expression by the dipole tracing method." Higher Brain Function Research 24, no. 4 (2004): 315–20. http://dx.doi.org/10.2496/hbfr.24.315.

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Kathiravan, C., R. Ramesh, and K. R. Subramanian. "Metric Radio Observations and Ray-tracing Analysis of the Onset Phase of a Solar Eruptive Event." Astrophysical Journal 567, no. 1 (February 5, 2002): L93—L95. http://dx.doi.org/10.1086/339801.

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Dilkes-Frayne, Ella. "Tracing the “Event” of Drug Use: “Context” and the Coproduction of a Night Out on MDMA." Contemporary Drug Problems 41, no. 3 (September 2014): 445–79. http://dx.doi.org/10.1177/009145091404100308.

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Rentsch, S., S. Buske, S. Lüth, and S. A. Shapiro. "Fast location of seismicity: A migration-type approach with application to hydraulic-fracturing data." GEOPHYSICS 72, no. 1 (January 2007): S33—S40. http://dx.doi.org/10.1190/1.2401139.

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We propose a new approach for the location of seismic sources using a technique inspired by Gaussian-beam migration of three-component data. This approach requires only the preliminary picking of time intervals around a detected event and is much less sensitive to the picking precision than standard location procedures. Furthermore, this approach is characterized by a high degree of automation. The polarization information of three-component data is estimated and used to perform initial-value ray tracing. By weighting the energy of the signal using Gaussian beams around these rays, the stacking is restricted to physically relevant regions only. Event locations correspond to regions of maximum energy in the resulting image. We have successfully applied the method to synthetic data examples with 20%–30% white noise and to real data of a hydraulic-fracturing experiment, where events with comparatively small magnitudes [Formula: see text] were recorded.

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Weiß, Bastian, Bert Jüttler, and Franz Aurenhammer. "Mitered Offsets and Skeletons for Circular Arc Polygons." International Journal of Computational Geometry & Applications 30, no. 03n04 (September 2020): 235–56. http://dx.doi.org/10.1142/s0218195921500023.

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The offsetting process that defines straight skeletons of polygons is generalized to arc polygons, i.e., to planar shapes with piecewise circular boundaries. The offsets are obtained by shrinking or expanding the circular arcs on the boundary in a co-circular manner, and tracing the paths of their endpoints. These paths define the associated shape-preserving skeleton, which decomposes the input object into patches. While the skeleton forms a forest of trees, the patches of the decomposition have a radial monotonicity property. Analyzing the events that occur during the offsetting process is non-trivial; the boundary of the offsetting object may get into self-contact and may even splice. This leads us to an event-driven algorithm for offset and skeleton computation. Several examples (both manually created ones and approximations of planar free-form shapes by arc spline curves) are analyzed to study the practical performance of our algorithm.

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48

Song, In-Sun, Changsup Lee, Hye-Yeong Chun, Jeong-Han Kim, Geonhwa Jee, Byeong-Gwon Song, and Julio T. Bacmeister. "Propagation of gravity waves and its effects on pseudomomentum flux in a sudden stratospheric warming event." Atmospheric Chemistry and Physics 20, no. 12 (July 1, 2020): 7617–44. http://dx.doi.org/10.5194/acp-20-7617-2020.

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Abstract. Effects of realistic propagation of gravity waves (GWs) on distribution of GW pseudomomentum fluxes are explored using a global ray-tracing model for the 2009 sudden stratospheric warming (SSW) event. Four-dimensional (4D; x–z and t) and two-dimensional (2D; z and t) results are compared for various parameterized pseudomomentum fluxes. In ray-tracing equations, refraction due to horizontal wind shear and curvature effects are found important and comparable to one another in magnitude. In the 4D, westward pseudomomentum fluxes are enhanced in the upper troposphere and northern stratosphere due to refraction and curvature effects around fluctuating jet flows. In the northern polar upper mesosphere and lower thermosphere, eastward pseudomomentum fluxes are increased in the 4D. GWs are found to propagate more to the upper atmosphere in the 4D, since horizontal propagation and change in wave numbers due to refraction and curvature effects can make it more possible that GWs elude critical level filtering and saturation in the lower atmosphere. GW focusing effects occur around jet cores, and ray-tube effects appear where the polar stratospheric jets vary substantially in space and time. Enhancement of the structure of zonal wave number 2 in pseudomomentum fluxes in the middle stratosphere begins from the early stage of the SSW evolution. An increase in pseudomomentum fluxes in the upper atmosphere is present even after the onset in the 4D. Significantly enhanced pseudomomentum fluxes, when the polar vortex is disturbed, are related to GWs with small intrinsic group velocity (wave capture), and they would change nonlocally nearby large-scale vortex structures without substantially changing local mean flows.

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Fossati, M., J. T. Mendel, A. Boselli, J. C. Cuillandre, B. Vollmer, S. Boissier, G. Consolandi, et al. "A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)." Astronomy & Astrophysics 614 (June 2018): A57. http://dx.doi.org/10.1051/0004-6361/201732373.

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The Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) is a blind narrow-band Hα + [NII] imaging survey carried out with MegaCam at the Canada-France-Hawaii Telescope. During pilot observations taken in the spring of 2016 we observed NGC 4330, an intermediate mass (M* ≃ 109.8 M⊙) edge-on star forming spiral currently falling into the core of the Virgo cluster. While previous Hα observations showed a clumpy complex of ionised gas knots outside the galaxy disc, new deep observations revealed a low surface brightness ~10 kpc tail exhibiting a peculiar filamentary structure. The filaments are remarkably parallel to one another and clearly indicate the direction of motion of the galaxy in the Virgo potential. Motivated by the detection of these features which indicate ongoing gas stripping, we collected literature photometry in 15 bands from the far-UV to the far-IR and deep optical long-slit spectroscopy using the FORS2 instrument at the ESO Very Large Telescope. Using a newly developed Monte Carlo code that jointly fits spectroscopy and photometry, we reconstructed the star formation histories in apertures along the major axis of the galaxy. Our results have been validated against the output of CIGALE, a fitting code which has been previously used for similar studies. We found a clear outside-in gradient with radius of the time when the quenching event started: the outermost radii were stripped ~500 Myr ago, while the stripping reached the inner 5 kpc from the centre in the last 100 Myr. Regions at even smaller radii are currently still forming stars fueled by the presence of HI and H2 gas. When compared to statistical studies of the quenching timescales in the local Universe we find that ram pressure stripping of the cold gas is an effective mechanism to reduce the transformation times for galaxies falling into massive clusters. Future systematic studies of all the active galaxies observed by VESTIGE in the Virgo cluster will extend these results to a robust statistical framework.

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Persijn, Jan-Jasper. "To what question is the Badiouan notion of the subject an answer? On the dialectical elaboration of the concept in his early work." Philosophy & Social Criticism 43, no. 1 (August 3, 2016): 96–120. http://dx.doi.org/10.1177/0191453715595457.

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Alain Badiou’s elaboration of a subject faithful to an event is commonly known today in the academic world and beyond. However, his first systematic account of the subject ( Théorie du Sujet) was already published in 1982 and did not mention the ‘event’ at all. Therefore, this article aims at tracing back both the structural and the historical conditions that directed Badiou’s elaboration of the subject in the early work up until the publication of L’Être et l’Événément in 1988. On the one hand, it investigates to what extent the (early) Badiouan subject can be considered an exceptional product of the formalist project of the Cahiers pour l’Analyse as instigated by psychoanalytical discourse (Lacan) and a certain Marxist discourse (Althusser) insofar as both were centered upon a theory of the subject. On the other hand, this article examines the radical political implications of this subject insofar as Badiou has directed his philosophical aims towards the political field as a direct consequence of the events of May ’68.

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