Relevant bibliographies by topics / Delayed electrons

Academic literature on the topic 'Delayed electrons'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Delayed electrons"

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Roth, Ilan. "Formation of the delayed relativistic solar electrons." Journal of Atmospheric and Solar-Terrestrial Physics 70, no. 2-4 (February 2008): 490–95. http://dx.doi.org/10.1016/j.jastp.2007.08.073.

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Roth, Ilan. "Energetic Solar Electrons – Whistler Bootstrap, Magnetic Knots and Small-scale Reconnection." Proceedings of the International Astronomical Union 6, S274 (September 2010): 178–81. http://dx.doi.org/10.1017/s1743921311006879.

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AbstractThe (near) relativistic electrons, emanating from the solar corona in long-lasting, gradual events, are generally observed at 1 AU as delayed vs the less energetic, type-III beams. The observations are consistent with the delayed electrons being energized along the stretched post-CME coronal field lines, when the tail of an anisotropic seed population, which is injected in conjunction to the observed radioheliograph bursts, interacts with the self-excited whistler waves (bootstrap mechanism). These bursts indicate efficient processes where suprathermal seed electrons are injected as a result of magnetic reconnection at the marginally stable coronal configuration left behind the emerging CME. The dependence of the bootstrap mechanism on the electron injection raises the general question of the MHD description and its deviation over the small electron skin-depth scale. The similarity between MHD and knot theories allows one to characterize any turbulent magnetic configuration through topological invariants, while deviation over electron skin-depth scale, characterized by the generalized vorticity, which is enhanced due to density inhomogeneity, creates the conditions for the potential injection sites.
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Panaitescu, A. D., and W. T. Vestrand. "Properties of the Prompt Optical Counterpart Arising from the Cooling of Electrons in Gamma-Ray Bursts." Astrophysical Journal 938, no. 2 (October 1, 2022): 155. http://dx.doi.org/10.3847/1538-4357/ac9315.

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Abstract This work extends a contemporaneous effort to study the properties of the lower-energy counterpart synchrotron emission produced by the cooling of relativistic gamma-ray burst (GRB) electrons through radiation (synchrotron and self-Compton) emission and adiabatic losses. We derive the major characteristics (pulse duration, lag time after burst, and brightness relative to the burst) of the prompt optical counterpart (POC) occurring during or after the GRB. Depending on the magnetic field lifetime, duration of electron injection, and electron transit time Δt o from hard X-ray (GRB) to optical-emitting energies, a POC may appear during the GRB pulse (of duration δ t γ ) or after (delayed OC). The signature of counterparts arising from the cooling of GRB electrons is that POC pulses (Δt o < δ t γ ) last as long as the corresponding GRB pulse (δ t o ≃ δ t γ ), while delayed OC pulses (Δt o > δ t γ ) last as long as the transit time (δ t o ≃ Δt o ). If OC variability can be measured, then another signature for this OC mechanism is that the GRB variability is passed on to POCs but not to delayed OCs. Within the GRB electron cooling model for counterparts, POCs should be on average dimmer than delayed ones (consistent with the data), and harder GRB low-energy slopes β LE should be associated more often with the dimmer POCs. The latter sets an observational bias against detecting POCs from (the cooling of electrons in) GRBs with a hard slope β LE, making it more likely that the detected POCs of such bursts arise from another mechanism.
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Stevenson, Kenneth L., and Attila Horváth. "Prompt and Delayed Photoejection of Electrons in Aqueous Solution." Journal of the American Chemical Society 118, no. 25 (January 1996): 6088–89. http://dx.doi.org/10.1021/ja960863l.

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Lee, Sooheyong, Wonhyuk Jo, Anthony D. DiChiara, Timothy P. Holmes, Stephen Santowski, Yong Chan Cho, and Eric C. Landahl. "Probing Electronic Strain Generation by Separated Electron-Hole Pairs Using Time-Resolved X-ray Scattering." Applied Sciences 9, no. 22 (November 8, 2019): 4788. http://dx.doi.org/10.3390/app9224788.

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Photogeneration of excess charge carriers in semiconductors produces electronic strain. Under transient conditions, electron-hole pairs may be separated across a potential barrier. Using time-resolved X-ray diffraction measurements across an intrinsic AlGaAs/n-doped GaAs interface, we find that the electronic strain is only produced by holes, and that electrons are not directly observable by strain measurements. The presence of photoinduced charge carriers in the n-doped GaAs is indirectly confirmed by delayed heat generation via recombination.
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Emary, Clive. "Delayed feedback control in quantum transport." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 371, no. 1999 (September 28, 2013): 20120468. http://dx.doi.org/10.1098/rsta.2012.0468.

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Feedback control in quantum transport has been predicted to give rise to several interesting effects, among them quantum state stabilization and the realization of a mesoscopic Maxwell's daemon. These results were derived under the assumption that control operations on the system are affected instantaneously after the measurement of electronic jumps through it. In this contribution, I describe how to include a delay between detection and control operation in the master equation theory of feedback-controlled quantum transport. I investigate the consequences of delay for the state stabilization and Maxwell's daemon schemes. Furthermore, I describe how delay can be used as a tool to probe coherent oscillations of electrons within a transport system and how this formalism can be used to model finite detector bandwidth.
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Yeretzian, Chahan, and Robert L. Whetten. "Delayed emission of electrons from C60 following energetic impact against graphite." Zeitschrift f�r Physik D Atoms, Molecules and Clusters 24, no. 2 (June 1992): 199–202. http://dx.doi.org/10.1007/bf01426705.

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Lee, Ja Min, Sae Won Lee, and Young Sik Kim. "Highly Charge Transport Thermally Activated Delayed Fluorescence Host Materials Based on Benzimidazole-Acridine Derivatives." Journal of Nanoscience and Nanotechnology 20, no. 8 (August 1, 2020): 5070–74. http://dx.doi.org/10.1166/jnn.2020.17821.

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We designed novel thermally activated delayed fluorescence (TADF) host molecules for blue electrophosphorescence by combining the electron acceptor benzimidazole (BI) unit and the electron donor acridine derivatives into a single molecular unit based on density functional theory (DFT). We obtained the energies of the first singlet (S1) and the first triplet (T1) excited states of the TADF materials by performing DFT and time-dependent DFT (TD-DFT) calculations to the ground state using dependence on charge transfer amounts for the optimal Hartree-Fock percentage in the exchange-correlation of TD-DFT. Using DFT and TD-DFT calculations, the large separation between the HOMO and LUMO caused a small difference in energy (ΔEST) between the S1 and T1 states. The host molecules retained high triplet energy and showed great potential for use in blue phosphorescent organic light-emitting diodes. The results showed that these molecules are promising TADF host materials because they have a low barrier to hole and electron injection, balanced charge transport for both holes and electrons, and a small ΔEST.
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Lee, JaMin, Sae Won Lee, and Young Sik Kim. "Noble Dibenzothiophene-Based Bipolar Hosts for Blue Organic Light-Emitting Diodes Using Thermally Activated Delayed Fluorescence." Journal of Nanoscience and Nanotechnology 20, no. 11 (November 1, 2020): 7191–95. http://dx.doi.org/10.1166/jnn.2020.18856.

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Novel thermally activated delayed fluorescence (TADF) host materials for blue electrophosphores-cence were designed by combining the electron acceptor dibenzothiophene (DBT) unit and the electron donor acridine derivatives into a single molecular unit by density functional theory (DFT). Depending on the optimal charge transfer, DFT and time-dependent DFT (TD-DFT) calculations for the ground state were performed to obtain the energy of the singlet (S1) and triplet (T1) excited states of the TADF material for Hartree-Fock percentage of TD-DFT. The sufficiently large separation between the HOMO and LUMO resulted in a small difference in energy (ΔEST) between the S1 and T1 states using DFT and TD-DFT calculations. The host molecules retained high triplet energy and showed great potential for use in blue organic light-emitting diodes (OLED). The results showed that these molecules are a good TADF host materials because they have a low barrier to hole and electron injection with a balanced charge transporting property for both holes and electrons, and a small ΔEST.
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Olshin, Pavel K., Jonathan M. Voss, Marcel Drabbels, and Ulrich J. Lorenz. "Accurate time zero determination in an ultrafast transmission electron microscope without energy filter." Applied Physics Letters 120, no. 10 (March 7, 2022): 104103. http://dx.doi.org/10.1063/5.0087850.

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In ultrafast transmission electron microscopy, time zero can be accurately determined by making use of the photon-induced near-field electron microscopy (PINEM) effect, which causes electrons interacting with the near fields of a nanoparticle to coherently gain or lose energy in multiples of the photon energy when the laser pump and electron probe pulse overlap in time. If the instrument is not equipped with an energy filter, which is required to observe the PINEM effect, the response of a sample is frequently monitored instead. However, the gradual or delayed onset of this response can render an accurate measurement as challenging. Here, we demonstrate a simple and accurate method for determining time zero without an energy filter that is based on the observation that the outline of a nanoparticle blurs when the electron and laser pulse overlap in time. We show that this phenomenon arises from the PINEM effect, which causes some electrons to gain a large energy spread, thus blurring the image due to the chromatic aberration of the imaging system. This effect can also be used to characterize the instrument response and determine the laser polarization in situ. Furthermore, it may find applications for mapping out the near fields of a nanoparticle without the help of an energy filter.
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Dissertations / Theses on the topic "Delayed electrons"

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Lu, Mu-Chiao. "Delay identification and model predictive control of time delayed systems." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22045.

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Two research problems involving the class of linear and nonlinear time delayed systems are addressed in this thesis. The first problem concerns delay identification in time delayed systems. The second problem concerns in the design of receding horizon controllers of time delayed systems. Original solutions to both problems are provided and their efficiency is assessed with examples and applications. In this thesis, delay identification problem is tackled first. Steepest descent and generalized Newton type delay identifiers are proposed. The receding horizon control problems for delayed systems are extensively investigated next. For both of linear and nonlinear time delayed systems, asymptotically stabilizing receding control laws are delivered. Finally, to reduce the conservativeness caused by delay uncertainties, an adaptive receding horizon strategy which combines feedback control with on-line delay identification is also discussed. The thesis demonstrates the following: (1) Development of delay identifiers which are independent of system parameter identification and robust with respect to errors in the measured trajectory and exogenous input function. (2) Development of practical delay identifiers for linear and nonlinear time delayed systems for reducing conservativeness of existing robust control designs. (3) Development of model predictive control techniques for linear and nonlinear time delayed systems. (4) Rigorous proofs of the asymptotic stability of the proposed model predictive controllers. (5) Application of on-line estimation schemes to the proposed model predictive controllers.
Cette thèse aborde deux problématiques de recherche relatives à la classe des systèmes linéaires et non-linéaires avec retard. Le premier problème a trait à l'identification des retards dans les systèmes avec retard. Le second problème consiste à concevoir des commandes d'horizon fuyant pour les systèmes avec retard. Des solutions originales sont proposées pour ces deux problèmes et leur efficacité est évaluée à l'aide d'exemples et d'applications. Dans cette thèse, le problème de l'identification du retard est abordé en premier. La descente prononcée et les identificateurs du retard du type Newton généralisé sont proposés. Les problèmes de commande d'horizon fuyant pour les systèmes avec retard sont explorés. Tant pour les systèmes avec retard linéaires que non-linéaires, des règles de commandes asymptotiquement stabilisatrice pour les horizons fuyants sont proposées. Finalement, pour reduire conservatisme untraduit par l'incertitude du retard, une stratégie d'horizon fuyant adaptif, qui combine le contrôle de retour avec le retard d'identification en ligne, est aussi discuté. La thèse démontre les points suivants. (1) Développement d'identificateurs de retard qui sont indépendants de l'identification des paramètres du système et robuste à l'égard des erreurs de trajectoire mesurée et de fonctions d'entreés externes. (2) Développement d'identificateurs de retard pratiques pour les systèmes avec retard linéaires et non-linéaires pour réduire la conservatisme de conception des commandes robustes existantes. (3) Développement de techniques de commande prédictive pour les systèmes avec retard linéaires et non-linéaires. (4) Preuve rigoureuse de la stabilité asymptotique des commandes prédictives proposées. (5) Application du schéma d'estimation en ligne aux commandes prédictives proposées.
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Jacobi, Christoph, Norbert Jakowski, Gerhard Schmidtke, and Thomas N. Woods. "Delayed response of the global total electron content to solar EUV variations." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212283.

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The ionospheric response to solar extreme ultraviolet (EUV) variability during 2011–2014 is shown by simple proxies based on Solar Dynamics Observatory/Extreme Ultraviolet Variability Experiment solar EUV spectra. The daily proxies are compared with global mean total electron content (TEC) computed from global TEC maps derived from Global Navigation Satellite System dual frequency measurements. They describe about 74% of the intra-seasonal TEC variability. At time scales of the solar rotation up to about 40 days there is a time lag between EUV and TEC variability of about one day, with a tendency to increase for longer time scales.
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Jamal, Alden Mohammed Kais. "Robust and Resilient Control for Time Delayed Power Systems." Thesis, Southern Illinois University at Edwardsville, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1588452.

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Power system is the backbone of modern society. Traditionally, over 90% of the electrical energy is produced by power generation systems driven by steam turbines. Recently, with the development of renewable energy resources, wind energy conversion systems are the proven solutions for the next generation sustainable energy resources. Stability and performance of these power systems are the primary concerns of power system engineers. To better characterize the dynamical behaviors of power systems in practical applications, time delays in the feedback state variables, systems modeling uncertainties, and external disturbances are included in the state space model of the power system in this work. Linear matrix inequality based robust and resilient controllers satisfying the H_infinty performance objective for time delayed power systems are proposed. Fixed time delays are assumed to exist within the system state and input signals. The system model is assumed to have unstructured bounded uncertainties and L_2 type of disturbances. Furthermore, controller gain perturbations are assumed to be of additive type. The proposed control techniques have been applied to variable speed permanent magnet synchronous generator based wind energy conversion systems, and electrical power generation systems driven by steam turbine. Computer simulations conducted in MATLAB show the eectiveness of the proposed control algorithms.

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Saloga, Clinton W. "Have delayed independence and poor initial institutions been economically costly for Latin Americans?" Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/3971.

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This paper tests the hypothesis that the timing of independence in Latin America and the institutions in place at the time of independence had a joint effect on the developmental paths of the countries. A new variable is presented - the interaction term between the timing of independence and initial institutions, and then tested with Multiple OLS Regressions. The findings support the notion that earlier independence in conjunction with better initial institutions may have had a positive influence on long-term economic growth in Latin American countries using data from 1990-2004.
Thesis (M.A.)--Wichita State University, The W. Frank Barton School of Business, Dept. of Economics
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Lefever, Timothy W. "Effects of olanzapine on olfactory delayed matching-to-sample in rats." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-3/lefevert/timothylefever.pdf.

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Laichi, Farouk. "Performance study of the leaky least mean square adaptive algorithm with delayed adjustments." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6748.

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Adaptive filters constitute an important part of signal processing. They are widely used in many applications where signal statistics are unknown to the users. One of the most popular adaptive methods is known as the least mean-squared (LMS) algorithm. It is well known for its hardware simplicity and its cost effectiveness. However, the LMS adaptive algorithm does not operate well in non-ideal environments. Leakage in the updated equation of the LMS algorithm was proven to overcome many such problems. This algorithm is known as the leaky LMS (LLMS). The LLMS is very robust to drifting phenomena and overflow in registers; problems that occur in the digital implementation of adaptive algorithms. In many applications, an inherent delay in the feedback error path is encountered. This delay has a definite effect on the performance of the LLMS algorithm. In this thesis, we study the performance of LLMS in the presence of delay (LDLMS). This algorithm is basically the LLMS with a delay incorporated in the coefficient updated equation. A new general stability bound is derived for the LDLMS, from which bounds of convergence of LMS, LLMS, and delayed LMS(DLMS) can be obtained. Stability bounds, convergence behavior, and excess mean squared error for this new algorithm are investigated. Theoretical results are first derived and later verified by simulations. It will be shown that introducing leakage in the DLMS algorithm gives a compromise performance. Finally, examples of applications of the LDLMS algorithm are provided.
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Wang, Xuan. "Pedestrian delays at signalized intersections." abstract and full text PDF (UNR users only), 2009. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3387827.

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Jacobi, Christoph, Claudia Unglaub, Gerhard Schmidtke, Robert Schäfer, and Norbert Jakowski. "Delayed response of global ionospheric electron content to EUV variations derived from combined SolACES-SDO/EVE measurements." Universität Leipzig, 2015. https://ul.qucosa.de/id/qucosa%3A16645.

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The ionospheric response to solar EUV variability during 2011 - 2014 is shown by an EUV proxy based on primary ionization calculations using combined solar spectra from SDO/EVE and SolACES on board the ISS. The daily proxies are compared with global mean TEC analyses. At time scales of the solar rotation and longer, there is a time lag between EUV and TEC variability of about one to two days, indicating dynamical processes in the thermosphere/ionosphere systems. This lag is not seen at shorter time scales. When taking this delay into account the TEC variance at the seasonal and short-term time scale explained by EUV variations increases from 71% to 76%.
Die ionosphärische Antwort auf Variationen des solaren EUV im Zeitraum 2011-2014 wird anhand eines Proxys dargestellt, welcher die primäre Ionisation auf der Basis gemessener solare EUV-Spektren beinhaltet. Die täglichen Werte werden mit Analysen des global gemittelten Gesamtelektronengehalts verglichen. Auf Zeitskalen der solaren Rotation und länger findet sich eine Zeitverzögerung zwischen der EUV-Variation und des derjenigen des Gesamtelektronengehalts von ein bis 2 Tagen, welche auf dynamische Prozesse im System Thermosphäre/Ionosphäre hinweist. Die Verzögerung ist auf kurzen Zeitskalen nicht zu sehen. Wenn diese Verzögerung berücksichtigt wird, erhöht sich die durch EUV-Variationen erklärte Varianz des Elektronengehalts von 71% auf 76%.
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Haule, Damian Daniel. "Virtuality and reality of a near-optimal time-delayed teleoperator control system based on teleprogramming paradigm." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=42052.

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The teleprogramming control paradigm is suggested as a means to efficiently perform teleoperation tasks in situations where the remote and local manipulator systems are connected via a low bandwidth delayed communications link. The effects of communication delays in the order of seconds can be reduced by building a virtual reality simulated model of the remote site with which the operator can interact to receive immediate quality feedback using a Human-Machine Interface (HMI) for telepresence applications. This concept overcomes the delay by transmitting not Cartesian or joint level informations in the form of signals, but rather symbolic, error tolerant, command program segments to the remote site. Symbolic instructions are send to the remote station every time the contact state changes or every second if no change of contact state has occurred.
Remote robotic systems are often very complex and difficult to operate, especially as multiple robots are integrated to accomplish difficult tasks in an unstructured or hazardous environments. In addition, training the operators is time-consuming and costly. A simulated virtual reality based system will provide a means by which operators can be trained to operate in an intuitive, and cost-effective way. Operator interaction with the remote system is at a high, task-oriented, level. Real-time state monitoring can prevent illegal robot actions and provides interactive feedback. A teleprogramming based simulator is essential for cost-effective Teleoperator Interface & Training (TIT) using supervisory control approach. An intelligent virtual interface is required which provides a rich means of presenting diagnostic and visual state information to the operator with reduced fatigue in real-time.
The Mobile Servicing System (MSS) Operations and Training Simulator (MOTS) will be used as a leading edge implementation of the teleprogramming concepts. MOTS provides high-fidelity, functional kinematic and dynamic software simulation of the MSS Space Segment in on-orbit configuration. MOTS is a real-time simulation environment of varying degrees of fidelity, along with an aggregate of software tools intended for the support of MSS space operations and training of crew and ground personnel. Primary interface to MOTS simulation models is through a Common Data Base (CDB) where telecommands are stored in a common shared memory. Hence, all telecommand data elements that are used to control the simulation modules are exported through the CDB by the Human Computer Interface (HCI) pages, hand controllers (H/C) and Display & Control (D&C) panel. Communication between simulation modules is achieved through the CDB in real-time.
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Bullard, Laura A. "The effects of the NMDA antagonist dizocilpine on an olfactory delayed match-to-sample task in rats." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/bullardl/laurabullard.pdf.

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Books on the topic "Delayed electrons"

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Hranchuk, K. B. An electronic device for communication in developmentally delayed children. Ottawa: National Research Council Canada, Division of Electrical Engineering, 1989.

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1928-, Ogawa Kazuo, and Barka Tibor, eds. Electron microscopic cytochemistry and immunocytochemistry in biomedicine. Boca Raton: CRC Press, 1993.

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The digital delay handbook. New York: Amsco Publications, 1985.

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Institute of Electrical and Electronics Engineers., IEEE Computer Society. Design Automation Standards Subcommittee., IEEE Standards Association, and IEEE Standards Board, eds. IEEE standard for standard delay format (SDF) for the electronic design process. New York: Institute of Electrical and Electronics Engineers, 2001.

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Fambro, Daniel B. Effects of the quality of traffic signal progression on delay. Washington, D.C: Transportation Research Board, National Research Council, 1991.

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Sivaraman, Mukund. A Unified Approach for Timing Verification and Delay Fault Testing. Boston, MA: Springer US, 1998.

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Mahmoud, Magdi S. Switched time-delay systems: Stability and control. New York: Springer, 2010.

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Nisar, Ahmed, ed. Nanometer technology designs: High-quality delay tests. New York, NY: Springer, 2008.

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Polyzos, George C. A queueing theoretic approach to the delay analysis for a class of conflict resolution algorithms. Toronto: Computer Systems Research Institute, University of Toronto, 1989.

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Burrow, I. J. OSCADY: A computer program to model capacities, queues and delays at isolated traffic signal junctions. Crowthorne: Transport and Road Research Laboratory, 1987.

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Book chapters on the topic "Delayed electrons"

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Kmet, Tibor, and Maria Kmetova. "Bifurcation Analysis of Time Delayed Ecological Model." In Nonlinear Dynamics of Electronic Systems, 395–402. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08672-9_47.

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Krstić, Angela, and Kwang-Ting Cheng. "Delay Fault Models." In Frontiers in Electronic Testing, 23–31. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_3.

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Krstić, Angela, and Kwang-Ting Cheng. "Delay Fault Simulation." In Frontiers in Electronic Testing, 77–100. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_6.

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Krstić, Angela, and Kwang-Ting Cheng. "Path Delay Fault Classification." In Frontiers in Electronic Testing, 45–76. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_5.

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Litovski, Vančo. "Low-Pass and Band-Pass Group Delay Correctors." In Electronic Filters, 209–25. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9852-1_11.

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Krstić, Angela, and Kwang-Ting Cheng. "Case Studies on Delay Testing." In Frontiers in Electronic Testing, 33–44. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_4.

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Krstić, Angela, and Kwang-Ting Cheng. "Design for Delay Fault Testability." In Frontiers in Electronic Testing, 131–55. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_8.

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Krstić, Angela, and Kwang-Ting Cheng. "Synthesis for Delay Fault Testability." In Frontiers in Electronic Testing, 157–68. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_9.

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Krstić, Angela, and Kwang-Ting Cheng. "Test Generation for Path Delay Faults." In Frontiers in Electronic Testing, 101–30. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_7.

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Krstić, Angela, and Kwang-Ting Cheng. "Test Application Schemes for Testing Delay Defects." In Frontiers in Electronic Testing, 7–22. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5597-1_2.

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Conference papers on the topic "Delayed electrons"

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Kim, Sung Joon, and Ja Choon Koo. "A New Highly Sensitive Dielectric Slip Detection Sensor for a Robotic Operation." In ASME 2017 Conference on Information Storage and Processing Systems collocated with the ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/isps2017-5403.

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For dexterous grasping and manipulation, tactile sensors recognizing contact object are essential. Electronic skin (E-skin) with tactile sensors plays a role as both receiving information for grasping and protecting robot frame. This paper presents a polymer tactile sensor covering large area to fulfill role of E-skin. The sensor has a thin air gap between polymer layers and it is deformed reacting slip input. When slip is occurred, there is relative displacement between surrounding layer and it incurs change of electrode separation. NBR is used to sensor substrate because of its tough and flexible characteristic. Ultrathin aluminum tape is employed for electrodes. There is a changeability of size of the sensor because of its simple but effective working principle and structure. Slip detecting algorithm doesn’t have a post process such as FFT or DWT, so there isn’t delay for processing time. It realizes real-time slip detection reducing reaction time of robot hand.
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Mbanya Tchafa, Franck, Jun Yao, and Haiying Huang. "Wireless Interrogation of a High Temperature Antenna Sensor Without Electronics." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65954.

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This paper presents a novel interrogation mechanism for an antenna sensor subjected to high temperatures. In sensor node, an Ultra-wide Band (UWB) microstrip antenna was used as a wireless Tx/Rx transceiver to amplify the reflected interrogation signal from the temperature-sensing element, i.e. the patch antenna-sensor. A microstrip delay line was used to connect the Tx/Rx antenna and the antenna-sensor so that the reflected signal from the sensor node is delayed and can be separated from the background clutter using time-domain (T-D) gating technique. In this paper, the principle of operation of the proposed interrogation mechanism is first discussed, followed by the design and simulations of the sensor node circuitry. Finally, a temperature test was conducted to validate the wireless temperature sensing performance of the antenna sensor.
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Milovancev, Dinka, and Luis Nero Alves. "Delayed feedback amplifiers with maximum flat group delay." In 2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS). IEEE, 2013. http://dx.doi.org/10.1109/icecs.2013.6815372.

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Narita, Fumio, Yasuhide Shindo, and Mitsuru Hirama. "Delayed Fracture of the Piezoelectric Ceramics Under Electric Fields in Three-Point Bending." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41165.

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This paper investigates experimentally and analytically the delayed fracture in lead zirconate titanate (PZT) ceramics under electromechanical loading. Delayed fracture tests were conducted on single-edge precracked-beam specimens, and time-to-failure and fracture load under different DC electric fields were obtained. Possible mechanisms for delayed fracture were also discussed by scanning electron microscope (SEM) examination of the fracture surface of the PZT ceramics. Further, a nonlinear finite element analysis was employed to calculate the energy release rate for the permeable, impermeable and open crack models, and the effects of applied DC electric fields and localized polarization switching on the energy release rate are examined.
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Lange, John M. "The Adaptation of CNC Helical Guide Technology to the Gear Shaping Process." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/ptg-48031.

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The Gear shaping process, like all gear manufacturing processes, has been enhanced by the application of CNC Technology. In the case of the gear shaping process the “partial” application of CNC Technology first occurred in 1982. While virtually all gear cutting and grinding machines have had their axes of motions converted to CNC, the development of a CNC electronic helical guide for the gear shaping process was delayed for technological reasons. The following questions will be discussed and answered: • Why is a helical guide necessary in the gear shaping process? • What had delayed CNC technology from being applied to the helical guide principle in the gear shaping process? • How has the addition of the electronic guide CNC Technology impacted the gear shaping process? • Have lead quality and productivity rates been aversely affected by the addition of the electronic guide feature? • How might this increase in flexibility, by using an electronic guide in the shaping process, be applied to real life applications?
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Ghone, Chaitanya, Mihir Mody, and Hrushikesh Garud. "Delayed duplicate intra frames (DDI) for low-delay video encoding." In 2015 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT). IEEE, 2015. http://dx.doi.org/10.1109/conecct.2015.7383941.

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Lalgudi, Subramanian N., Saeed Asgari, and Michael Tsuk. "Accurate delay-based convolution macromodel using delayed least-squares convolution." In 2010 IEEE 19th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS). IEEE, 2010. http://dx.doi.org/10.1109/epeps.2010.5642557.

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Bruce, William A., Jared Proegler, Brad Etheridge, Steve Rapp, and Russell Scoles. "An Alternative Approach to Time Delay Prior to Inspection for Hydrogen Cracking." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78305.

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Hydrogen-assisted cracking in welds, which is also referred to as ‘hydrogen cracking’ or ‘delayed cracking,’ often requires time to occur. The reason for this is that time is required for the hydrogen to diffuse to areas with crack susceptible microstructures. Prior to inspection for hydrogen cracking, general good practice indicates that a sufficient delay time should be allowed to elapse — to allow any cracks that are going to form to do so and for the cracks to grow to a detectable size. What is a ‘sufficient’ delay time? Why does a delay time tend to be required for some applications (e.g., installation of a hot tap branch connection) and not for others (e.g., construction of an offshore pipeline from a lay barge)? This paper will address these and other related questions and present the results of recent experimental work on this subject. When determining appropriate delay times prior to inspection, it is important to consider not only the time-dependent nature of hydrogen cracking, but also the expected susceptibility of the weld to cracking. From a time-dependent nature standpoint, longer delay times decrease the chance that cracking can occur after inspection has been completed. From a probability standpoint, if measures can be taken to assure that the probability of cracking is extremely low, then determining an appropriate delay time becomes a moot point. In other words, if the weld is never going to crack, it does not matter when you inspect it. The probability of cracking can be minimized by using more conservative welding procedures (i.e., by designing out the risk of hydrogen cracking during procedure qualification). For example, if hydrogen levels are closely controlled by using low-hydrogen electrodes or a low-hydrogen welding process, or if the hydrogen in a weld made using cellulosic-coated electrodes is allowed to diffuse away after welding by careful application of preheating and slow cooling, or the use of post-weld preheat maintenance (i.e., post-heating), the probability of cracking is significantly reduced, and immediate inspection may be justified. This alternative approach to time delay prior to inspection for hydrogen cracking, which can allow for immediate inspection, will be presented.
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Ma, Xiaosong, Angie Qarry, Nuray Tetik, Thomas Jennewein, and Anton Zeilinger. "Entanglement-assisted Delayed-Choice Experiment." In 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference. IEEE, 2007. http://dx.doi.org/10.1109/cleoe-iqec.2007.4386925.

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Catania, Andrea Emilio, Alessandro Ferrari, and Ezio Spessa. "Numerical-Experimental Study and Solutions to Reduce the Dwell Time Threshold for Fusion-Free Consecutive Injections in a Multijet Solenoid-Type C.R. System." In ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ices2006-1369.

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In ‘Multijet’ Common Rail (C.R.) diesel injection systems, when two consecutive injection current-pulses are approached to each other, the fusion of the two injections can occur. This causes undesired excessive amount of injected fuel, which leads to worsening of particulate emissions and fuel consumption. In order to avoid such a phenomenon, lower limits to the values of dwell time are introduced in the control unit maps, by means of a conservatively overestimated threshold, limiting the flexible management of multiple injections and C.R. system capability to perform a larger number of injection shots. The reason of the injection fusion is mainly due to the time delay between the electrical signal to the solenoid and the needle lift at both valve opening and closure. In particular, the dwell-time range inside of which injection fusion occurs was shown to decrease by reducing the nozzle closure delay. Experimental tests were carried out on a high-performance Moehwald-Bosch MEP2000/CA4000 test bench for determining the functional dependence of nozzle closure and opening delays on solenoid energizing time and nominal rail pressure. Besides, a mathematical relation between the solenoid energizing time and the injection time interval was determined. A Multijet C.R. injection system mathematical model, that was previously developed, including thermodynamics of liquids, fluid dynamics, subsystem mechanics, and electromagnetism equations, was applied to better understand the cause and effect relationships for nozzle opening and closure delays. In particular, numerical results on the time histories of delivery- and control-chamber pressures, pilot- and needle-valve lifts, mass flow rates through Z and A holes, were obtained and analyzed in order to highlight the dependence of nozzle opening and closure delays on electro-injector internal geometric features and on the needle dynamics. For all the considered operating conditions, the model predictions were compared to the experimental injection flow-rate patterns and to the pressure data taken at the injector inlet, for assessment. The nozzle closure delay was shown to strongly depend on the needle dynamics. Parametric tests were carried out with the numerical code by changing needle and control plunger mass, needle spring preload and stiffness, maximum needle stroke, in order to identify configurations useful for minimizing the nozzle closure delay. On the basis of the indications derived from these numerical tests, a modified version of the commercial electro-injector was realized so as to achieve effectively reduced nozzle closure delays and very close sequential injections without any fusion between them.
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Reports on the topic "Delayed electrons"

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Kreek, S. A., H. L. Hall, D. C. Hoffman, D. Strellis, and K. E. Gregorich. Study of electron-capture delayed fission in Am-232. Office of Scientific and Technical Information (OSTI), March 1996. http://dx.doi.org/10.2172/212535.

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Shaughnessy, Dawn A. Electron-capture delayed fission properties of neutron-deficient einsteinium nuclei. Office of Scientific and Technical Information (OSTI), January 2000. http://dx.doi.org/10.2172/754277.

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Jones, Scott B., Shmuel P. Friedman, and Gregory Communar. Novel streaming potential and thermal sensor techniques for monitoring water and nutrient fluxes in the vadose zone. United States Department of Agriculture, January 2011. http://dx.doi.org/10.32747/2011.7597910.bard.

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The “Novel streaming potential (SP) and thermal sensor techniques for monitoring water and nutrient fluxes in the vadose zone” project ended Oct. 30, 2015, after an extension to complete travel and intellectual exchange of ideas and sensors. A significant component of this project was the development and testing of the Penta-needle Heat Pulse Probe (PHPP) in addition to testing of the streaming potential concept, both aimed at soil water flux determination. The PHPP was successfully completed and shown to provide soil water flux estimates down to 1 cm day⁻¹ with altered heat input and timing as well as use of larger heater needles. The PHPP was developed by Scott B. Jones at Utah State University with a plan to share sensors with Shmulik P. Friedman, the ARO collaborator. Delays in completion of the PHPP resulted in limited testing at USU and a late delivery of sensors (Sept. 2015) to Dr. Friedman. Two key aspects of the subsurface water flux sensor development that delayed the availability of the PHPP sensors were the addition of integrated electrical conductivity measurements (available in February 2015) and resolution of bugs in the microcontroller firmware (problems resolved in April 2015). Furthermore, testing of the streaming potential method with a wide variety of non-polarizable electrodes at both institutions was not successful as a practical measurement tool for water flux due to numerous sources of interference and the M.S. student in Israel terminated his program prematurely for personal reasons. In spite of these challenges, the project funded several undergraduate students building sensors and several master’s students and postdocs participating in theory and sensor development and testing. Four peer-reviewed journal articles have been published or submitted to date and six oral/poster presentations were also delivered by various authors associated with this project. We intend to continue testing the "new generation" PHPP probes at both USU and at the ARO resulting in several additional publications coming from this follow-on research. Furthermore, Jones is presently awaiting word on an internal grant application for commercialization of the PHPP at USU.
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Liou, Yuei-An. Retrieving Ionospheric Electron Density Distribution With COSMIC Occultations: An Analysis of the Effects of Geometric and Mathematical Delays on TEC Inversions From GPS/MET Occultation Data. Fort Belvoir, VA: Defense Technical Information Center, August 2001. http://dx.doi.org/10.21236/ada627499.

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CIE 245:2021 Optical Safety of Infrared Eye Trackers Applied for Extended Durations. International Commission on Illumination (CIE), 2021. http://dx.doi.org/10.25039/tr.245.2021.

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Infrared eye trackers are employed to achieve communication through gaze interaction, which is an important application of modern electro-optics and computer technology to the benefit of persons with disabilities who have major motor impairments, as well as for general use as a human-to-computer interaction device. By tracking eye movements of persons with severe motor disabilities, the individuals can interact with automated equipment through movements of their gaze. In addition to purely passive systems, which may only employ ambient lighting, more typical eye trackers employ active infrared eye-tracking techniques. However, questions have arisen with regard to the potential optical radiation hazards of using infrared eye trackers for the much-extended durations of 10 to 12 hours each day for a lifetime. Conventional eye trackers employed in the research setting would rarely be used for more than an hour. Several exposure guidelines exist today, but the question has arisen whether the chronic nature of exposure for such an infrared illuminator for assistive devices falls outside the assumed conditions of daily exposure. This technical report explores the basis of the current human exposure guidelines, their scientific basis and underlying assumptions in order to determine the direct applicability of these guidelines to this application. It is found that the most limiting exposure criterion is the infrared exposure limit to protect against delayed changes in the crystalline lens of the eye. The Technical Committee also examined some representative eye trackers and found that the day-long average exposure in these typical examples of current technology did not exceed that criterion.
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