Relevant bibliographies by topics / Disconjugacy

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

Academic literature on the topic 'Disconjugacy'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Disconjugacy"

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Henderson, Johnny. "k-component disconjugacy for systems of ordinary differential equations." International Journal of Mathematics and Mathematical Sciences 9, no. 2 (1986): 373–80. http://dx.doi.org/10.1155/s0161171286000467.

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Disconjugacy of thekth component of themth order system ofnth order differenttal equationsY(n)=f(x,Y,Y′,…,Y(n−1)), (1.1), is defined, wheref(x,Y1,…,Yn),∂f∂yij(x,Y1,…,Yn):(a,b)×Rmn→Rmare continuous. Given a solutionY0(x)of (1.1),k-component disconjugacy of the variational equationZ(n)=∑i=1nfYi(x,Y0(x),…,Y0(n−1)(x))Z(i−1), (1.2), is also studied. Conditions are given for continuous dependence and differentiability of solutions of (1.1) with respect to boundary conditions, and then intervals on which (1.1) isk-component disconjugate are characterized in terms of intervals on which (1.2) isk-compo
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Maruta, Jun. "Ocular disconjugacy cannot be measured without establishing a solid reference." F1000Research 4 (March 17, 2015): 71. http://dx.doi.org/10.12688/f1000research.6162.1.

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This correspondence points out a need for clarification concerning the methodology utilized in the study “Eye tracking detects disconjugate eye movements associated with structural traumatic brain injury and concussion”, recently published in Journal of Neurotrauma. The authors of the paper state that binocular eye movements were recorded using a single-camera video-oculography technique and that binocular disconjugate characteristics were analyzed without calibration of eye orientation. It is claimed that a variance-based disconjugacy metric was found to be sensitive to the severity of a conc
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Ghasia, Fatema F., Jorge Otero-Millan, and Aasef G. Shaikh. "Abnormal fixational eye movements in strabismus." British Journal of Ophthalmology 102, no. 2 (2017): 253–59. http://dx.doi.org/10.1136/bjophthalmol-2017-310346.

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IntroductionFixational saccades are miniature eye movements that constantly change the gaze during attempted visual fixation. Visually guided saccades and fixational saccades represent an oculomotor continuum and are produced by common neural machinery. Patients with strabismus have disconjugate binocular horizontal saccades. We examined the stability and variability of eye position during fixation in patients with strabismus and correlated the severity of fixational instability with strabismus angle and binocular vision.MethodsEye movements were measured in 13 patients with strabismus and 16
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Maruta, Jun. "Ocular disconjugacy cannot be measured without establishing a solid spatial reference." F1000Research 4 (April 22, 2015): 71. http://dx.doi.org/10.12688/f1000research.6162.2.

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This correspondence points out a need for clarification concerning the methodology utilized in the study “Eye tracking detects disconjugate eye movements associated with structural traumatic brain injury and concussion”, recently published in Journal of Neurotrauma. The authors of the paper state that binocular eye movements were recorded using a single-camera video-oculography technique and that binocular disconjugate characteristics were analyzed without calibration of eye orientation. It is claimed that a variance-based disconjugacy metric was found to be sensitive to the severity of a conc
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Haščák, Alexander. "Tests for disconjugacy and strict disconjugacy of linear differential equations with delays." Czechoslovak Mathematical Journal 39, no. 2 (1989): 225–31. http://dx.doi.org/10.21136/cmj.1989.102297.

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Eloe, Paul W., Johnny Henderson, and Rahmat Ali Khan. "Uniqueness Implies Existence and Uniqueness Conditions for a Class of (k + j)-Point Boundary Value Problems for n-th Order Differential Equations." Canadian Mathematical Bulletin 55, no. 2 (2012): 285–96. http://dx.doi.org/10.4153/cmb-2011-117-0.

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AbstractFor the n-th order nonlinear differential equation, y(n) = f (x, y, y′, … , y(n–1)), we consider uniqueness implies uniqueness and existence results for solutions satisfying certain (k + j)-point boundary conditions for 1 ≤ j ≤ n – 1 and 1 ≤ k ≤ n – j. We define (k; j)-point unique solvability in analogy to k-point disconjugacy and we show that (n – j0; j0)-point unique solvability implies (k; j)-point unique solvability for 1 ≤ j ≤ j0, and 1 ≤ k ≤ n – j. This result is analogous to n-point disconjugacy implies k-point disconjugacy for 2 ≤ k ≤ n – 1.
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Haščák, A. "Test for Disconjugacy of a Differential Inclusion of Neutral Type." gmj 4, no. 2 (1997): 101–8. http://dx.doi.org/10.1515/gmj.1997.101.

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Abstract Generalizations of the disconjugacy for a differential inclusion of neutral type are given. The relation between these generalizations and the existence of solutions of multipoint boundary value problems is discussed and the tests for disconjugacy are established. These tests are applicable to the linear differential equations of neutral type, too.
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El Hmimdi, Alae, Lindsey Ward, Themis Palpanas, Vivien Sainte Fare Garnot, and Zoï Kapoula. "Predicting Dyslexia in Adolescents from Eye Movements during Free Painting Viewing." Brain Sciences 12, no. 8 (2022): 1031. http://dx.doi.org/10.3390/brainsci12081031.

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It is known that dyslexics present eye movement abnormalities. Previously, we have shown that eye movement abnormalities during reading or during saccade and vergence testing can predict dyslexia successfully. The current study further examines this issue focusing on eye movements during free exploration of paintings; the dataset was provided by a study in our laboratory carried by Ward and Kapoula. Machine learning (ML) classifiers were applied to eye movement features extracted by the software AIDEAL: a velocity threshold analysis reporting amplitude speed and disconjugacy of horizontal sacc
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Pallus, Adam, Mark M. G. Walton, and Michael Mustari. "Activity of near-response cells during disconjugate saccades in strabismic monkeys." Journal of Neurophysiology 120, no. 5 (2018): 2282–95. http://dx.doi.org/10.1152/jn.00219.2018.

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Infantile strabismus is a common disorder characterized by a chronic misalignment of the eyes, impairment of binocular vision, and oculomotor abnormalities. Nonhuman primates with strabismus, induced in infancy, show a pattern of abnormalities similar to those of strabismic children. This allows strabismic nonhuman primates to serve as an ideal animal model to examine neural mechanisms associated with aberrant oculomotor behavior. Here, we test the hypothesis that impairment of disparity vergence and horizontal saccade disconjugacy in exotropia and esotropia are associated with disrupted tunin
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Markham, Charles H., and Shirley G. Diamond. "A Predictive Test for Space Motion Sickness." Journal of Vestibular Research 3, no. 3 (1993): 289–95. http://dx.doi.org/10.3233/ves-1993-3309.

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Eye torsion was examined in 13 astronaut subjects, tested during repeated episodes of 0 G and 1.8 G in parabolic flight aboard NASA’s KC-135. Four findings are included. 1) A strong relationship between previous history of SMS and ocular torsional disconjugacy in novel gravitational states. 2) Responses were unchanged in 4 subjects retested a year later. 3) Ocular torsional disconjugacy scores increased as exposure to 0 and 1.8 G increased. This was particularly evident in subjects who had had SMS. 4) Torsional studies during 10 to 20 parabolas are required to accurately predict SMS. The hypot
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Dissertations / Theses on the topic "Disconjugacy"

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Xu, Yuhua. "Disconjugacy and Oscillation Theory of Linear Differential and Difference Equations." DigitalCommons@USU, 1992. https://digitalcommons.usu.edu/etd/7130.

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This dissertation is both a literature survey and a presentation of new and independent results. The survey gives an overview of disconjugacy and oscillation theory for linear differential and difference equations with an emphasis on comparing the theory of difference equations to the theory of differential equations. higher order scalar equations. Second order scalar equations, matrix equations (systems) and Hamiltonian systems are discussed. A chapter on three-term recurrences of systems is also included. Both similarities and differences between differential and difference equations are des
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Davison, Ryan C. "The behavior of oculomotor neurons during conjugate and disconjugate eye movements." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2009r/davison.pdf.

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Lai, Chien-Chou, and 賴建州. "Disconjugacy of Linear Difference Equation." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/45186607864377540117.

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碩士<br>淡江大學<br>數學學系<br>85<br>In this work,we adopt the Green's functions of ordinary difference equations to find the sufficient condition for any even order linear difference equationto be disconjugate.First, we discuss the properties of the Green's functions and the conditions of the nontrivial solutions of boundary-value problems. Applying these properties, we derive the sufficient conditions of the solutions of boundary-value problems to be disconjugate. From the literature, we see that
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Kumari, Sowjanya I. "Disconjugacy, conjugacy and oscillation criteria for continuous and discrete linear hamiltonian systems." Thesis, 1999. http://hdl.handle.net/2009/1267.

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Books on the topic "Disconjugacy"

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Coppel, W. A. Disconjugacy. Springer London, Limited, 2006.

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Disconjugate Gaze. Independently Published, 2019.

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Montgomery, Erwin B. Approach to DBS in the Vicinity of the Subthalamic Nucleus. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190259600.003.0011.

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The regional anatomy around the DBS lead in the subthalamic nucleus (STN) determines efficacy and adverse effects. Understanding the regional anatomy allows the programmer to adjust the stimulation to provide optimal benefit and the absence of adverse effects.The STN lies near the junction of the diencephalon and mesencephalon. It is just ventral to the thalamus, just lateral to the brachium conjunctivum and red nucleus, and medial and dorsal to the internal capsule. These structures are important because inappropriate stimulation causes side effects. For examples: Electrical fields spreading
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Book chapters on the topic "Disconjugacy"

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Ahlbrandt, Calvin D., and Allan C. Peterson. "Disconjugacy Criteria." In Discrete Hamiltonian Systems. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-2467-7_8.

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Elias, Uri. "Disconjugacy and its Characterization." In Oscillation Theory of Two-Term Differential Equations. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-017-2517-0_10.

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Johnson, Russell, Rafael Obaya, Sylvia Novo, Carmen Núñez, and Roberta Fabbri. "Weak Disconjugacy for Linear Hamiltonian Systems." In Developments in Mathematics. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29025-6_5.

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Eloe, Paul. "Disconjugacy and Higher Order Dynamic Equations." In Advances in Dynamic Equations on Time Scales. Birkhäuser Boston, 2003. http://dx.doi.org/10.1007/978-0-8176-8230-9_8.

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Travis, Betty, and Ramón Navarro. "Equivalent Conditions for Disconjugacy in Self-Adjoint Systems." In Differential Equations and Nonlinear Mechanics. Springer US, 2001. http://dx.doi.org/10.1007/978-1-4613-0277-3_26.

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Johnson, Russell, Sylvia Novo, Carmen Núñez, and Rafael Obaya. "Uniform Weak Disconjugacy and Principal Solutions for Linear Hamiltonian Systems." In Recent Advances in Delay Differential and Difference Equations. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08251-6_5.

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Straumann, Dominik. "Disconjugate Eye Movements." In Neuro-Ophthalmology. KARGER, 2007. http://dx.doi.org/10.1159/000100351.

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Trench, W. F. "Linear perturbations of general disconjugate equations." In Equadiff 6. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/bfb0076066.

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Arnoldi, Kyle A., and Lawrence Tychscn. "Prevalence of Intracranial Lesions in Children Presenting with Disconjugate Nystagmus (Spasmus Nutans)." In Update on Strabismus and Pediatric Ophthalmology Proceedings of the June, 1994 Joint ISA and AAPO&S Meeting, Vancouver, Canada. CRC Press, 2024. https://doi.org/10.1201/9781003575207-169.

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Doherty, J. F., and P. L. Chiodini. "Malaria." In Critical Care Cases. Oxford University PressNew York, NY, 1997. http://dx.doi.org/10.1093/oso/9780192625847.003.0026.

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Abstract A 31-year-old woman was found unconscious at home 13 days after returning from a holiday in Zambia. At presentation, she was febrile 39°e, jaundiced, and dehydrated with a disconjugate gaze. She was flexing in response to painful stimuli and had generalized muscle twitching. She had generalized hypertonia without localizing signs. There was no hep atosplenomegaly. She weighed 70 kg.
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Conference papers on the topic "Disconjugacy"

1

Došlá, Zuzana, Mariella Cecchi, and Mauro Marini. "Disconjugate operators and related differential equations." In The 6'th Colloquium on the Qualitative Theory of Differential Equations. Bolyai Institute, SZTE, 1999. http://dx.doi.org/10.14232/ejqtde.1999.5.4.

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You might also be interested in the extended bibliographies on the topic 'Disconjugacy' for particular source types:
Journal articles
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