báo cáo hóa học: " On the potential role of glutamate transport in mental fatigue" ppt
báo cáo hóa học: " On the potential role of glutamate transport in mental fatigue" ppt
... overstimulation of the cerebral cortex. Here, the final shutdown of the glutamate transmission could beone mechanism underlying mental exhaustion (figure 1). In line with these theoretical proposals, increased ... fatigue. In addition, the decrease in noradrenaline and serot-onin release might be part of decreased attention and the appearance of depression often accompanying the mental fatigue.Journal of ... glutamine supply of the neurons.Experimental investigations in the rat and monkey havedemonstrated a feedback loop from the left basal frontalcortex, with an inhibitory influence on the locus...
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Báo cáo hóa học: " On the maximum modulus of a polynomial and its polar derivative" potx
... Proof of the theoremProof of Theorem 1.1.Letm =min|z|=k|p(z)|. If p( z)hasazeroon|z|=k,thenm =0 and the result follows from Lemma 2.8. Henceforth, we suppose that all the zeros of p(z) lie in ... result contradicts the fact that |a1|>k. Hence, the polynomialDα1p(z)mustbe of degree (n - 1). On the other hand, since all the zeros of p(z) lie in |z| ≤ k, therefore by applyingLemma ... WM: A generalization of a theorem of Paul Turan. J Ramanujan Math Soc. 1,67–72 (1996)6. Aziz, A, Rather, NA: A refinement of a theorem of Paul Turan concerning polynomials. Math Ineq Appl. 1, 231–238(1998)7....
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Báo cáo hóa học: " On the super-stability of exponential Hilbert-valued functional equations" pot
... ℝ ® ℝ is an additive functionand anis a function satisfying (1). The continuation of proof depend on the dimension of H. In fact, if H is infinite dimensional, since(en⊗ F)(x)=F( x ), ... distribution, and reproduction in any medium, provided the original work is properly cited.exponential equation as exponential function. A general solution of the exponentialequation was introduced in ... 46E40.Keywords: exponential functions, stability, Hilbert-valued function1. Introduction The stability problem of functional equations goes back to a question of Ulam [1] con-cerning the stability of group...
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báo cáo hóa học: " On the solvability conditions of the first boundary value problem for a system of elliptic equations that strongly degenerate at a point" pdf
... ≡0because of the continuity of the function˜qn1j on (0, R). In such a case, the elements of the second row of matrix˜Qnsatisfy the equationln(˜qn2j)=0. For the samereason as a ... withdegeneracy at an inner point of the considereddomainareobtainedin[1].Inthatstudy, the Dirichlet problem for a weakly (regularly) degenerating elliptic equation with the main part of Laplace’s operator ... s.(30) The termsrRn|m|≤na(k)nmHmn(ω) of the series on the right-hand side of (29) are harmonic functions in ∑R. Since theseseries converge uniformly on the sphere SR, they...
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Báo cáo hóa học: " On the EVM computation of arbitrary clipped multi-carrier signals" docx
... well as the effect of an arbitrary magnitudeclipping response by giving an analytical expression in the form of a power series for computing the EVM of the gen-eralized cas e.Analysis of clipped ... evaluation for each desired scenario. The paper is organized as follows. In Section 2 the system model used in this work is introduced. Theorem3.1 in Section 3 presents the main result of this ... ˜μ51r4dr.(11)Proof. See Appendix A. □4 Simulation results and discussion4.1 The Gaussian approximationA common method for analyzing the EVM of an OFDMsig nal uses the central l imit theorem (CLT). By invokingthe...
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báo cáo hóa học: " On the achievable rates of multiple antenna broadcast channels with feedback-link capacity constraint" doc
... number of feedback bits per usermust increase linearly with the logarithm of the down-link SNR to maintain the full multiplexing gain. Further, the authors in [26] pointed out that in the scenar ... f(x)=exEn(x)(n ≥ 1) is a monotonicallydecreasing function. The proofs of these three lemmas are in Appendices4-6, respectively. Then we have the following theorem on the lower bound of the achievable ... is a convex andmonotonically decreasing function. The proof of this lemma is in Appendix 3. Then wehave the following closed-form lower bound on the downlink achievable ergodic rate in the Rayleigh...
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Báo cáo khoa học: "On the Computational Complexity of Dominance Links in Grammatical Formalisms" doc
... amultiset of productions in N × V∗and D is a re-lation from nonterminals in the right parts of pro-ductions in P to nonterminals in their left parts,and S in N is the start symbol.A terminal ... Di) in W , at least one of the pi,jshould contain at least one terminal in its rightpart—we have then L(UVG-dl) ⊆ L(MLIG).More on Dominance Links Dominance linksare quite common in ... exactly to the MLIG of Example 2. The ease of translation from the grammar of Figure 4 into a MLIG stems from the impossi-bility of splitting any of its vectors (P, D) intotwo nonempty ones (P1,...
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Báo cáo hóa học: " Testing the potential of a virtual reality neurorehabilitation system during performance of observation, imagery and imitation of motor actions recorded by wireless functional nearinfrared spectroscopy (fNIRS)" potx
... betaken into account when recording in untrained sub-jects. In the long term, these findings are of relevancefor the VR-fNIRS instrument’s potential in neurofeed-back applications.LH conceived of ... taken intoaccount when recording in untrained subjects. These findings are of relevance for demonstrating the potential of the VR-fNIRS instrument in neurofeedback applications.* Correspondence: ... vision. The study was approved by the ethics committee of the Canton of Zurich and was in accordance with the latest version of the Helsinkideclaration.Holper et al. Journal of NeuroEngineering...
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Báo cáo hóa học: " On the understanding and development of modern physical neurorehabilitation methods: robotics and non-invasive brain stimulation" pdf
... result in improved motorfunction together with the decreased risk of secondaryhealth problems. Yet this is labour intensive. Further-more, patients often find the training uninteresting, tiringand ... cost of stroke is expected to exceed a trillion dollars in the USalone [2]. So what can be done now to mitigate this? Sincea large part of the cost of stroke is the management of ongoing disability, ... of the individual, and the time since lesion or state of the disease. I refer readers to the individual papers in this thematic series of JNER for an insightful and thor-ough account of the basis...
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báo cáo hóa học: "On the identification of sensory information from mixed nerves by using single-channel cuff electrodes" pot
... classification system for ENG signals. Training is performed on the first and testing on the sec-ond half of the data. (A) Training procedure consisting of: Filtering (in order to eliminate the EMG ... difference on the type of processing availablebased on the selectivity of the electrode and its place-ment. For example, by using cuff electrodes only the superposition of action potentials belonging ... B illustrates the steps performed during the test phase: pre-processing, feature extraction (both the same as during the training), identification of the stimulus using the trained classifier,...
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