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Artykuły w czasopismach na temat „Delay controls”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Erjino, Dawit Sullamo, Abera Beyamo Mekiso, Lonsako Abute Woiloro, et al. "Maternal delays and unfavourable newborn outcomes among skilled deliveries in public hospitals of Hadiya Zone, Southern Ethiopia: a case–control study." BMJ Open 12, no. 5 (2022): e055569. http://dx.doi.org/10.1136/bmjopen-2021-055569.

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ObjectWe assessed maternal delays and unfavourable newborn outcomes among skilled deliveries in public hospitals of Hadiya Zone, Southern Ethiopia using ‘the three maternal delays’ framework.DesignA case–control study was conducted.SettingPublic hospitals in Hadiya Zone, southern Ethiopia.ParticipantsSample of 57 cases and 121 controls participated from 4 September 2019 to 30 October 2019. Consecutive dead newborns at discharge or admitted newborns for more 24 hours after delivery were selected as cases. Two consecutive controls were selected from none cases discharged within 24 hours of skill

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2

Sadoun, Mokhtaria Bouariba, Amine Benaissa Cherif, Rachid Bentifour, Keltoum Bouhali, Mohamed Biomy, and Khaled Zennir. "Loss of Exponential Stability for a Delayed Timoshenko System Symmetrically in Both Viscoelasticity and Fractional Boundary Controls." Symmetry 17, no. 3 (2025): 423. https://doi.org/10.3390/sym17030423.

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The stability analysis of Timoshenko beam systems that incorporate delays and fractional boundary controls is a complex area of study in the field of viscoelasticity. Our study aims to balance the symmetric influence of internal viscoelastic damping and boundary fractional damping in a structured way. The goal is to establish a system where both effects contribute symmetrically to the overall stability and dynamics. In this paper, we study the stability of certain hyperbolic evolution problems, in particular, a Timoshenko system in viscoelasticity with fractional time delay and fractional boun

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3

Fu, Liping, and Bruce Hellinga. "Delay Variability at Signalized Intersections." Transportation Research Record: Journal of the Transportation Research Board 1710, no. 1 (2000): 215–21. http://dx.doi.org/10.3141/1710-25.

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Delays that individual vehicles may experience at a signalized intersection are usually subject to large variation because of the randomness of traffic arrivals and interruption caused by traffic signal controls. Although such variation may have important implications for the planning, design, and analysis of signal controls, currently no analytical model is available to quantify it. The development of an analytical model for predicting the variance of overall delay is described. The model is constructed on the basis of the delay evolution patterns under two extreme traffic conditions: highly

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4

Lazzari, Giorgio, Robert van de Vorst, Floris T. van Vugt, and Carlotta Lega. "Subtle Patterns of Altered Responsiveness to Delayed Auditory Feedback during Finger Tapping in People Who Stutter." Brain Sciences 14, no. 5 (2024): 472. http://dx.doi.org/10.3390/brainsci14050472.

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Differences in sensorimotor integration mechanisms have been observed between people who stutter (PWS) and controls who do not. Delayed auditory feedback (DAF) introduces timing discrepancies between perception and action, disrupting sequence production in verbal and non-verbal domains. While DAF consistently enhances speech fluency in PWS, its impact on non-verbal sensorimotor synchronization abilities remains unexplored. A total of 11 PWS and 13 matched controls completed five tasks: (1) unpaced tapping; (2) synchronization-continuation task (SCT) without auditory feedback; (3) SCT with DAF,

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5

Yu, Xue, Edmund Sonuga-Barke, and Xiangping Liu. "Preference for Smaller Sooner Over Larger Later Rewards in ADHD: Contribution of Delay Duration and Paradigm Type." Journal of Attention Disorders 22, no. 10 (2015): 984–93. http://dx.doi.org/10.1177/1087054715570390.

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Objective: Individuals with ADHD preferentially choose smaller sooner (SS) over larger later (LL) rewards, termed impulsive choice. This has been observed to different degrees on single-choice and more complex discounting tasks using various types of rewards and durations of delays. There has been no direct comparison of performance of ADHD children using these two paradigms. Method: Two experimental paradigms, single-choice and temporal discounting, each including two delay conditions (13 and 25 s), were administered to 7- to 9-year-old children with ADHD ( n = 17) and matched controls ( n =

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6

Hubl, Daniela, Nicolas Moor, Jochen Kindler, Mara Kottlow, Thomas Dierks, and Thomas Koenig. "Speed, Accuracy, and Efficiency of Judgements of Coincidence between Speech Acts and Auditory Perception during a Delayed Auditory Feedback Paradigm: A Behavioral Study in Patients with Schizophrenia." Timing & Time Perception 8, no. 2 (2020): 177–91. http://dx.doi.org/10.1163/22134468-20191163.

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The inability to differentiate between one’s actions and their consequences from sensory inputs originating from an alien source might cause classical first-rank symptoms in schizophrenia, such as audio-verbal hallucinations (AVH). We aimed to determine whether patients with or without AVH perform differently in a task challenging the audio-verbal self-monitoring system compared to controls. Controls (n = 21) and schizophrenia patients with (AH, n = 11) and without AVH (NH, n = 9) participated. Subjects had to discern whether they heard a sound they had just uttered with or without delay. Reac

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7

Fantino, Edmund, and Jay N. Goldshmidt. "Differences, Not Ratios, Control Choice in an Experimental Analogue to Foraging." Psychological Science 11, no. 3 (2000): 229–33. http://dx.doi.org/10.1111/1467-9280.00246.

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In choice between outcomes with different delays to reinforcement, most theories require that choice be governed by the ratio of the delays, not by the difference between them, a requirement also consistent with Weber's law. Instead, delay-reduction theory and optimal-foraging theory stipulate, under conditions of the present experiments, that the difference between the delays, and not the ratio between them, controls choice. This prediction was assessed using a procedure, widely used in foraging experiments, in which pigeons chose between accepting and rejecting either of two delays when offe

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8

Van Nieuwland, M., E. Colin, D. Boumans, M. Vermeer, E. Brouwer, and C. Alves. "AB0367 DIAGNOSTIC DELAY IN PATIENTS WITH GIANT CELL ARTERITIS." Annals of the Rheumatic Diseases 80, Suppl 1 (2021): 1209–10. http://dx.doi.org/10.1136/annrheumdis-2021-eular.1830.

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Background:Giant cell arteritis (GCA) is the most common systemic vasculitis in the elderly which can lead to severe complications when treatment is delayed. Therefore, timely diagnosis and start of treatment is essential. Several forms of delay (consultation, referral and diagnostic delay) can contribute to the total delay towards GCA diagnosis. In the Dutch healthcare system, treatment is not started by a general practitioner (GP). When GCA is suspected, GPs refer to specialists. In our hospital, a fast track clinic (FTC) is used to expedite diagnosis. However, information on factors contrib

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9

HERSHEY, TAMARA, REMA LILLIE, MICHELLE SADLER, and NEIL H. WHITE. "Severe hypoglycemia and long-term spatial memory in children with type 1 diabetes mellitus: A retrospective study." Journal of the International Neuropsychological Society 9, no. 5 (2003): 740–50. http://dx.doi.org/10.1017/s1355617703950077.

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Performance on long delays of delayed response tasks is associated with medial temporal function, a region of the brain affected by severe hypoglycemia. A previous study showed that children with type 1 diabetes mellitus (T1DM) with higher risk for severe hypoglycemia performed worse than controls on long delays of a spatial delayed response (SDR) task. We tested the more specific hypothesis that frequency of severe hypoglycemia would relate to long delay SDR performance. Children with T1DM (n = 51) and controls (n = 32) performed the SDR task with short and long delays. Information was collec

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10

Matte-Landry, Alexandra, Michel Boivin, Laurence Tanguay-Garneau, et al. "Children With Persistent Versus Transient Early Language Delay: Language, Academic, and Psychosocial Outcomes in Elementary School." Journal of Speech, Language, and Hearing Research 63, no. 11 (2020): 3760–74. http://dx.doi.org/10.1044/2020_jslhr-20-00230.

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Purpose The objective of this study was to compare children with persistent versus transient preschool language delay on language, academic, and psychosocial outcomes in elementary school. Method Children with persistent language delay ( n = 30), transient language delay ( n = 29), and no language delay (controls; n = 163) were identified from a population-based sample of twins. They were compared on language skills, academic achievement, and psychosocial adjustment in kindergarten and Grades 1, 3, 4, and 6. Results Children with persistent language delay continued to show language difficultie

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11

Mansimov, K. B. "Quasisingular controls in systems with delay." Ukrainian Mathematical Journal 39, no. 3 (1988): 302–5. http://dx.doi.org/10.1007/bf01057240.

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12

de Feo, Filippo, and Andrzej Święch. "Optimal control of stochastic delay differential equations: Optimal feedback controls." Journal of Differential Equations 420 (March 2025): 450–508. https://doi.org/10.1016/j.jde.2024.12.019.

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13

Pinelas, Sandra, Osman Tunç, Erdal Korkmaz, and Cemil Tunç. "Existence and stabilization for impulsive differential equations of second order with multiple delays." Electronic Journal of Differential Equations 2024, no. 01-?? (2024): 07. http://dx.doi.org/10.58997/ejde.2024.07.

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Existence and stability of solutions are important parts in the qualitative study of delay differential equations. The stabilizing by imposing proper impulse controls are used in many areas of natural sciences and engineering. This article provides sufficient conditions for the existence and exponential stabilization of solutions to delay impulsive differential equations of second-order with multiple delays. The main tools in this article are the Schaefer fixed point theorem, fixed impulse effects, and Lyapunov-Krasovskii functionals. The outcomes extend earlier results in the literature. For

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14

Shen, Guangjun, Xueying Wu, and Xiuwei Yin. "Asymptotic stability of stochastic differential equations driven by G-Lévy process with delay feedback control." Filomat 37, no. 5 (2023): 1653–71. http://dx.doi.org/10.2298/fil2305653s.

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Given an unstable stochastic differential equations, the stabilisation by delay feedback controls for such equations under Lipschitz conditions or highly nonlinear conditions have been discussed by several authors. However, there is few works on the stabilisation by delay feedback controls under the sub-linear expectation associated with a G-L?vy process. The aim of this paper is to design delay feedback controls in the drift part and obtain the asymptotical stability in mean square and quasi-surely asymptotical stability for the stochastic differential equations driven by G-L?vy process with

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15

Yang, Yang, Yan Chen, Hao Sun, and Jin Huang. "The Rotation Speed Control of DC Servo Motor Based on Fuzzy-PI Dual Mode." Applied Mechanics and Materials 454 (October 2013): 34–38. http://dx.doi.org/10.4028/www.scientific.net/amm.454.34.

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The PID control algorithm is simple. But when it controls DC servo motor of nonlinearity, delay and strongly couple, its dynamic control performance is poor. Fuzzy control which is essentially equivalent to a nonlinear PD control has poor steady state performance. Fuzzy-PI dual-mode control simultaneously has PID control's steady-state performance and fuzzy control's dynamic performance. The step response simulation results shows that Fuzzy-PI controls rise time is 8sec and that the overshoot and steady-state error are close to 0. It has stronger anti-interference ability, higher dynamic perfo

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de la Sen, M. "Global Stability of Polytopic Linear Time-Varying Dynamic Systems under Time-Varying Point Delays and Impulsive Controls." Mathematical Problems in Engineering 2010 (2010): 1–33. http://dx.doi.org/10.1155/2010/693958.

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This paper investigates the stability properties of a class of dynamic linear systems possessing several linear time-invariant parameterizations (or configurations) which conform a linear time-varying polytopic dynamic system with a finite number of time-varying time-differentiable point delays. The parameterizations may be timevarying and with bounded discontinuities and they can be subject to mixed regular plus impulsive controls within a sequence of time instants of zero measure. The polytopic parameterization for the dynamics associated with each delay is specific, so that(q+1)polytopic pa

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17

Veldhoven, Deni Tressova-van, Hendrik Roozen, and Ad Vingerhoets. "The Association between Reward Sensitivity and Activity Engagement: the Influence of Delay Discounting and Anhedonia." Alcohol and Alcoholism 55, no. 2 (2020): 215–24. http://dx.doi.org/10.1093/alcalc/agz105.

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Abstract Aim Reward sensitivity affects individuals’ motivation to engage in goal-directed behavior. Other concepts, critical for reward appraisal, that potentially influence activity participation encompass delay discounting and anhedonia. The aim of this study was to test the hypothesis that anhedonia and delay discounting influence the relationship between reward sensitivity and activity engagement. Methods In total, 37 inpatient patients with an alcohol use disorder (AUD) and 37 matched healthy controls completed the behavioral activation system scale (BAS scale), the Pleasant Activities L

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18

Wang, Zimeng, David J. Hodge, and Huiling Le. "Conjugate duality in stochastic controls with delay." Advances in Applied Probability 49, no. 4 (2017): 1011–36. http://dx.doi.org/10.1017/apr.2017.32.

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AbstractIn this paper we use the method of conjugate duality to investigate a class of stochastic optimal control problems where state systems are described by stochastic differential equations with delay. For this, we first analyse a stochastic convex problem with delay and derive the expression for the corresponding dual problem. This enables us to obtain the relationship between the optimalities for the two problems. Then, by linking stochastic optimal control problems with delay with a particular type of stochastic convex problem, the result for the latter leads to sufficient maximum princ

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19

Dalen, Lindy, Edmund J. S. Sonuga-Barke, Martin Hall, and Bob Remington. "Inhibitory Deficits, Delay Aversion and Preschool AD/HD: Implications for the Dual Pathway Model." Neural Plasticity 11, no. 1-2 (2004): 1–11. http://dx.doi.org/10.1155/np.2004.1.

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The dual pathway model proposes the existence of separate and neurobiologically distinct cognitive (inhibitory and more general executive dysfunction) and motivational (delay aversion) developmental routes to AD/HD. The study reported in this paper explores the relation between inhibitory deficits and delay aversion and their association with AD/HD in a group of three-year-old children. Children identified as having a pre-school equivalent of AD/HD (N=19) and controls (N=19), matched for gender and IQ, completed a battery of inhibition and delay tasks. Correlational and factor analysis support

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20

Chen, Yong, Zhengan Yuan, Xin Shen, Jie Wu, Zheyuan Wu, and Biao Xu. "Resistance to Second-Line Antituberculosis Drugs and Delay in Drug Susceptibility Testing among Multidrug-Resistant Tuberculosis Patients in Shanghai." BioMed Research International 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/2628913.

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Introduction. Second-line antituberculosis drugs (SLDs) are used for treating multidrug-resistant tuberculosis (MDR-TB). Prolonged delays before confirming MDR-TB with drug susceptibility testing (DST) could result in transmission of drug-resistant strains and inappropriate use of SLDs, thereby increasing the risk of resistance to SLDs. This study investigated the diagnostic delay in DST and prevalence of baseline SLD resistance in Shanghai and described the distribution of SLD resistance with varied delays to DST.Methods. All registered patients from 2011 to 2013 in Shanghai were enrolled. Su

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21

Ekimov, Alexander V., Aleksei P. Zhabko, and Pavel V. Yakovlev. "The stability of differential-difference equations with proportional time delay. I. Linear controlled system." Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes 16, no. 3 (2020): 316–25. http://dx.doi.org/10.21638/11701/spbu10.2020.308.

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The article considers a controlled system of linear differential-difference equations with a linearly increasing delay. Sufficient conditions for the asymptotic stability of such systems are known; however, general conditions for the stabilizability of controlled systems and constructive algorithms for constructing stabilizing controls have not yet been obtained. For a linear differential-difference equation of delayed type with linearly increasing delay, the canonical Zubov transformation is applied and conditions for the stabilization of such systems by static control are derived. An algorit

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Swan, Julia, Joshua L. Gowin, Matthew E. Sloan, Reza Momenan, and Vijay A. Ramchandani. "2226 Influence of alcohol use disorder and comorbid psychopathology on discounting of delayed rewards." Journal of Clinical and Translational Science 2, S1 (2018): 43. http://dx.doi.org/10.1017/cts.2018.169.

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OBJECTIVES/SPECIFIC AIMS: Alcohol use disorder (AUD) has been associated with greater discounting of delayed rewards relative to healthy controls. The relationship, however, has been inconsistent, likely because previous studies had relatively small sample sizes and inadequately controlled for comorbid psychopathology and substance use. In the present study, we analyzed one of the largest clinical research samples to date to assess the influence of alcohol use on delay discounting, and examine the influence of confounding variables including substance use disorder. METHODS/STUDY POPULATION: In

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Bonanno, Giovanni. "An Innovative Digital Pulse Width Modulator and Its Field-Programmable Gate Array Implementation." Electronics 14, no. 8 (2025): 1522. https://doi.org/10.3390/electronics14081522.

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Digital pulse-width modulation (DPWM)-based controls are characterized by a non-negligible phase delay due to analog-to-digital (ADC) conversion, sampling time, carrier shape, and algorithm computation time. These delays degrade the performance in closed-loop systems, where the bandwidth must be reduced to avoid instability issues due to the reduced closed-loop phase margin. To mitigate these delays, approaches such as utilizing low-latency ADCs or increasing the sampling frequency have been employed. However, these methods are often costly and do not address the fundamental delay issues inher

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FALES, S. L., and R. J. HOOVER. "MANIPULATING SEASONAL GROWTH DISTRIBUTION AND NUTRITIVE QUALITY OF TIMOTHY AND ORCHARDGRASS USING THE GROWTH REGULATOR IMAZETHAPYR." Canadian Journal of Plant Science 70, no. 2 (1990): 501–8. http://dx.doi.org/10.4141/cjps90-059.

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Other than timely defoliation, management options for cool-season grass forages are limited. The growth regulator, imazethapyr (5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid), was evaluated as an agent for modifying seasonal production and nutritive quality of timothy (Phleum pratense L.) and orchardgrass (Dactylis glomerata L.). In 1986, 1987, and 1988 field plots of Toro timothy and Pennlate orchardgrass were treated with imazethapyr (IM) at rates of 50 and 100 g a.i. ha−1, respectively. Three cutting treatments were imposed, involving a progressive delay of first ha

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BEATTY, WILLIAM W., SHELLEY ENGLISH, and PETER WINN. "Long-lived picture priming in normal elderly persons and demented patients." Journal of the International Neuropsychological Society 4, no. 4 (1998): 336–41. http://dx.doi.org/10.1017/s1355617798003361.

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Normal elderly control participants showed short-term (10-min delay) and long-term (12 months delay) priming on the Gollin Figures Test. Nearly all patients with Alzheimer's disease or vascular dementia showed short-term priming, but the magnitude of their priming was less than that of controls. Significant long-term priming was not observed for the dementia groups. Differences between controls and dementia patients on the short-term priming test may depend upon structural–perceptual processes that are intact in dementia patients and controls and explicit memory functions available only to con

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Simmen-Janevska, Keti, Simon Forstmeier, Sandy Krammer, and Andreas Maercker. "Does Trauma Impair Self-Control? Differences in Delaying Gratification Between Former Indentured Child Laborers and Nontraumatized Controls." Violence and Victims 30, no. 6 (2015): 1068–81. http://dx.doi.org/10.1891/0886-6708.vv-d-13-00174.

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Traumatic experiences may affect an individual’s ability to exercise self-control, which is an essential characteristic for successfully managing life. As a measure of self-control, we used the delay discounting paradigm, that is, the extent to which a person devalues delayed gratification. The aim of this study was to investigate the relationship between childhood trauma and delay discounting using a control group design with elderly participants with a mean age of 76.2 years. Swiss former indentured child laborers (n = 103) who had been exposed to trauma during their childhood were compared

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GOLDBERG, T. E., K. J. PATTERSON, Y. TAQQU, and K. WILDER. "Capacity limitations in short-term memory in schizophrenia: tests of competing hypotheses." Psychological Medicine 28, no. 3 (1998): 665–73. http://dx.doi.org/10.1017/s0033291797006429.

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Background. Capacity limitation theories have proved to be surprisingly resilient in characterizing some of the cognitive deficits in schizophrenia. However, this perspective has not generally been applied to short-term verbal memory tasks. We explored this issue by first attempting to ascertain if gross misallocations of processing resources might explain impairments in short-term memory in schizophrenia on a classic digit span task and in a second study by attempting to determine what effects delay and memory set size had on a divided attention short-term verbal memory paradigm.Methods. In t

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Rosch, Keri S., and Stewart H. Mostofsky. "Increased Delay Discounting on a Novel Real-Time Task among Girls, but not Boys, with ADHD." Journal of the International Neuropsychological Society 22, no. 1 (2015): 12–23. http://dx.doi.org/10.1017/s1355617715001071.

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AbstractThe aim of this study was to examine delay discounting in girls and boys with ADHD-Combined type (ADHD-C) relative to typically developing (TD) children on two tasks that differ in the extent to which the rewards and delays were experienced by participants. Children ages 8–12 years with ADHD-C (n=65; 19 girls) and TD controls (n=55; 15 girls) completed two delay discounting tasks involving a series of choices between smaller, immediate and larger, delayed rewards. The classic delay discounting task involved choices about money at delays of 1–90 days and only some of the outcomes were a

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Kwon, Wook Hyun, Soo Hee Han, and Young Sam Lee. "On receding horizon controls for time-delay systems." IFAC Proceedings Volumes 33, no. 23 (2000): 175–80. http://dx.doi.org/10.1016/s1474-6670(17)36938-0.

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Faria, Teresa, and Yoshiaki Muroya. "Global attractivity and extinction for Lotka–Volterra systems with infinite delay and feedback controls." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 145, no. 2 (2015): 301–30. http://dx.doi.org/10.1017/s0308210513001194.

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The paper deals with a multiple species Lotka–Volterra model with infinite distributed delays and feedback controls, for which we assume a weak form of diagonal dominance of the instantaneous negative intra-specific terms over the infinite delay effect in both the population variables and controls. General sufficient conditions for the existence and attractivity of a saturated equilibrium are established. When the saturated equilibrium is on the boundary of , sharper criteria for the extinction of all or part of the populations are given. While the literature usually treats the case of competi

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Rosdiana, Ika Rosdiana, Tanti ajoe Kesoema, Henny Rio, and Dinar Widanarti. "A Speech Delay in Children: Effects of Parents' Education Level and Risk Factors." Indonesian Journal of Physical Medicine and Rehabilitation 13, no. 2 (2024): 88–99. https://doi.org/10.36803/indojpmr.v13i2.411.

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ABSTRACT Introduction : Speech delay is defined as when a child is difficult to understand compared to his or her age, or characterized by a pattern of speech error sounds that are inappropriate for children his age. Children with speech delays have a higher risk of experiencing social, emotional, behavioral, and cognitive problems in adulthood. Previous research has shown that between 2.3% and 19% of children aged 2-7 years are estimated to have speech delays. The purpose of this study was to look at the effect between parents' education level on speech delay in children and to analyze risk f

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Lien, Chang-Hua, and Yi-You Hou. "Guaranteed Cost Observer-Based Control for a Class of Uncertain Time-Delay Systems." Journal of Dynamic Systems, Measurement, and Control 127, no. 4 (2004): 723–28. http://dx.doi.org/10.1115/1.2098929.

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In this paper, the robust guaranteed cost observer-based controls for a class of uncertain time-delay systems are considered. The linear matrix inequality approach is used to design the feedback controls. Optimal guaranteed cost observer-based controls which minimize the upper bound of cost function are provided. A numerical example is given to illustrate our results.

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Silva, Cristiana J. "Stability and optimal control of a delayed HIV/AIDS-PrEP model." Discrete & Continuous Dynamical Systems - S 15, no. 3 (2022): 639. http://dx.doi.org/10.3934/dcdss.2021156.

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<p style='text-indent:20px;'>In this paper, we propose a time-delayed HIV/AIDS-PrEP model which takes into account the delay on pre-exposure prophylaxis (PrEP) distribution and adherence by uninfected persons that are in high risk of HIV infection, and analyze the impact of this delay on the number of individuals with HIV infection. We prove the existence and stability of two equilibrium points, for any positive time delay. After, an optimal control problem with state and control delays is proposed and analyzed, where the aim is to find the optimal strategy for PrEP implementation that m

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Mansimov, Kamil. "On quasi-singular controls in discrete systems with delay." Вестник Пермского университета. Математика. Механика. Информатика, no. 3(54) (2021): 19–24. http://dx.doi.org/10.17072/1993-0550-2021-3-19-24.

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Сconsider an optimal control problem described by a system of differential controls with a delaying argument and a multipoint performance functional under the assumption that the control domain is convex. A number of integral and multipoint necessary optimality conditions in the case of degeneration of the linearized maximum condition are established.

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Reichner, Daniel R., Thomas Scholz, Victoria M. Vanderkam, Socorro Gutierrez, Earl Steward, and Gregory R. D. Evans. "Laser Flap Delay: Comparison of Erbium: YAG and CO₂Lasers." American Surgeon 69, no. 1 (2003): 69–72. http://dx.doi.org/10.1177/000313480306900115.

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The delay phenomenon has long been recognized as a powerful tool in reconstructive surgery. This phenomenon involves creating alterations in skin flap blood supply or microcirculation to increase the size of the surviving flap. In the past many reconstructive surgeons depended on surgical delay as an integral part of their surgical planning. Today surgical delay remains a reliable method for maximizing flap survival. Although surgical delay remains the gold standard many have searched for methods to create the same effect with less morbidity and reduced cost. The purpose of this study was to d

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Mansimov, K. B. "To the necessary optimality conditions in systems with delay." Вестник Пермского университета. Математика. Механика. Информатика, no. 4(55) (2021): 5–13. http://dx.doi.org/10.17072/1993-0550-2021-4-5-13.

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An optimal control problem described by a system of ordinary differential equations with delay and a multipoint performance functional is considered. Necessary optimality conditions of singular controls are obtained.

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Mardanov, M. J., and T. K. Melikov. "On the theory of singular optimal controls in dynamic systems with control delay." Computational Mathematics and Mathematical Physics 57, no. 5 (2017): 749–69. http://dx.doi.org/10.1134/s0965542517050086.

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Qixia, Zhang, and Sun Qiliang. "Recursive StochasticH2/H∞Control Problem for Delay Systems Involving Continuous and Impulse Controls." Asian Journal of Control 19, no. 1 (2016): 405–13. http://dx.doi.org/10.1002/asjc.1328.

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Kim, Jungwuk, Sangyoub Lee, Taehoon Hong, and Seungwoo Han. "Activity vulnerability index for delay risk forecasting." Canadian Journal of Civil Engineering 33, no. 10 (2006): 1261–70. http://dx.doi.org/10.1139/l06-075.

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The vulnerability of construction activities to delay factors controls the magnitude of the delay impact. Vulnerability characteristics of construction activities result in different patterns of duration variation. To identify the relationship between the delay factors and an activity's vulnerability, an activity vulnerability index was developed based on the subjective knowledge of experienced experts in construction operations. Incorporating the fuzzy set theory, the index provides not only information about the quantified vulnerability characteristics of an activity but also a reference for

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Prasad, E. Siva, R. Omkar, and Kolloju Phaneendra. "Fitted Parameter Exponential Spline Method for Singularly Perturbed Delay Differential Equations with a Large Delay." Computational and Mathematical Methods 2022 (August 16, 2022): 1–11. http://dx.doi.org/10.1155/2022/9291834.

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In this paper, we present a new computational method based on an exponential spline for solving a class of delay differential equations with a negative shift in the differentiated term. When the shift parameter is O ε , the proposed method works well and also controls the oscillations in the solution’s layer region. To accomplish this, we included a parameter in the proposed numerical scheme that is based on a special type of mesh, and the parameter is evaluated using the theory of singular perturbation. Maximum absolute errors and convergences of numerical solutions are tabulated to demonstra

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Hatami, Hadi, and Iman Aghayan. "Traffic Efficiency Evaluation of Elliptical Roundabout Compared with Modern and Turbo Roundabouts Considering Traffic Signal Control." PROMET - Traffic&Transportation 29, no. 1 (2017): 1–11. http://dx.doi.org/10.7307/ptt.v29i1.2053.

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This paper compared the performance of elliptical roundabout with turbo and modern roundabouts. It considers the effects of increasing the central island radius and speed limit on delay and capacity. Three types of roundabouts (modern, turbo and elliptical roundabouts) with different numbers of lanes (single lane, two-lane and three-lane) were designed. Unsignalized and signalized controls were applied for these roundabouts. The robustness of the designed roundabouts was investigated for saturated and unsaturated flow conditions. Based on the obtained results, increasing the central island rad

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Facoetti, Andrea, Maria Lorusso, Carmen Cattaneo, Raffaella Galli, and Massimo Molteni. "Visual and auditory attentional capture are both sluggish in children with developmental dyslexia." Acta Neurobiologiae Experimentalis 65, no. 1 (2005): 61–72. http://dx.doi.org/10.55782/ane-2005-1540.

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Automatic multimodal spatial attention was studied in 12 dyslexic children (SRD), 18 chronological age matched (CA) and 9 reading level matched (RL) normally reading children by measuring reaction times (RTs) to lateralized visual and auditory stimuli in cued detection tasks. The results show a slower time course of focused multimodal attention (FMA) in SRD children than in both CA and RL controls. Specifically, no cueing effect (i.e., RTs difference between cued&#150;uncued) was found in SRD children at 100 ms cue-target delay, while it was present at 250 ms cue-target delay. In contrast,

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Rosenblueth, Javier F. "Strongly and Weakly Relaxed Controls for Time Delay Systems." SIAM Journal on Control and Optimization 30, no. 4 (1992): 856–66. http://dx.doi.org/10.1137/0330047.

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Yoshioka-Kobayashi, Kumiko, Marina Matsumiya, Yusuke Niino, et al. "Coupling delay controls synchronized oscillation in the segmentation clock." Nature 580, no. 7801 (2020): 119–23. http://dx.doi.org/10.1038/s41586-019-1882-z.

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Yoo, Han Woong, Young Sam Lee, and Soohee Han. "Constrained receding horizon controls for nonlinear time-delay systems." Nonlinear Dynamics 69, no. 1-2 (2011): 149–58. http://dx.doi.org/10.1007/s11071-011-0252-7.

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Yong, Jiong Min. "Stabilization of linear systems by time-delay feedback controls." Quarterly of Applied Mathematics 45, no. 2 (1987): 377–88. http://dx.doi.org/10.1090/qam/895105.

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Hattaf, Khalid, and Noura Yousfi. "Optimal Control of a Delayed HIV Infection Model with Immune Response Using an Efficient Numerical Method." ISRN Biomathematics 2012 (November 29, 2012): 1–7. http://dx.doi.org/10.5402/2012/215124.

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We present a delay-differential equation model with optimal control that describes the interactions between human immunodeficiency virus (HIV), CD4+ T cells, and cell-mediated immune response. Both the treatment and the intracellular delay are incorporated into the model in order to improve therapies to cure HIV infection. The optimal controls represent the efficiency of drug treatment in inhibiting viral production and preventing new infections. Existence for the optimal control pair is established, Pontryagin’s maximum principle is used to characterize these optimal controls, and the optimal

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R., B. Sonawane. "STOCHASTIC CONTROLLABILITY OF NONLINEAR SYSTEMS WITH TIME VARIABLE DELAY IN CONTROL." Scholarly Research Journal for Interdisciplinary Studies 11, no. 77 (2023): 427–38. https://doi.org/10.5281/zenodo.8214247.

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<em>We consider the stochastic controllability problem for nonlinear infinite dimensional systems with time variable delay in controls. Controllability problem for infinite dimensional systems has been studied by numerous researchers. Most of the researchers have considered the linear or semilinear stochastic systems with fixed time delay in control. Some of the researchers have studied controllability of deterministic semilinear systems with fixed delay in control. In this article we have studied the controllability of stochastic nonlinear infinite dimensional systems with time variable delay

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Arguchintsev, A. V., and V. P. Poplevko. "An Optimal Control Problem by a Hyperbolic System with Boundary Delay." Bulletin of Irkutsk State University. Series Mathematics 35 (2021): 3–17. http://dx.doi.org/10.26516/1997-7670.2021.35.3.

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The paper deals with an optimal control problem by a system of semilinear hyperbolic equations with boundary differential conditions with delay. This problem is considered for smooth controls. Because this requirement it is impossible to prove optimality conditions of Pontryagin maximum principle type and classic optimality conditions of gradient type. Problems of this kind arise when modeling the dynamics of non-interacting age-structured populations. Independent variables in this case are the age of the individuals and the time during which the process is considered. The functions of the pro

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Stewart, D., D. Wang, E. Lang, and G. Innes. "LO32: Are EMS offload delay patients at increased risk of adverse outcomes?" CJEM 19, S1 (2017): S38. http://dx.doi.org/10.1017/cem.2017.94.

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Introduction: ED and hospital overcrowding cause offload delays that remove EMS crews from service and compromise care delivery to patients. Prolonged ED boarding times are associated with increased hospital LOS and patient mortality, but the impact of offload delays has not been studied. Our objective was to determine whether offload delays are associated with adverse system and patient outcomes. Methods: From July 2013 to June 2016, administrative data was collated from four Calgary adult EDs. All CTAS 2 and 3 EMS arrivals were studied. Those assigned an ED care space within 15 minutes were

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