importance of positive feedback for students
Tài liệu The importance of interest rates for forecasting the exchange rate doc
Ngày tải lên :
15/02/2014, 05:20
... so that it is the forecast of (the log of) the actual exchange rate (and not its
change) that are compared.
Following Meese and Rogoff (1983), we perform an out -of- sample forecasting exercise ... Bjørnland and Håvard Hungnes
The importance of interest rates
for forecasting the exchange rate
Abstract:
This study compares the forecasting performance of a structural exchange rate model ... performs better than the random walk at forecasting the exchange rate at all horizons. The pure
PPP model performs worst of all the three models at all horizons, and can therefore not outperform...
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Tài liệu Examples of the Standards for Students’ Writing 2009: English Language Arts Grade 9 ppt
Ngày tải lên :
24/02/2014, 18:20
... letter.
Proportion of error to length and complexity of response has been considered.
10
Format of a Business Letter
There are three basic business-letter formats. Any of
these formats is appropriate ... editor of The
Wentworth News, to publish an article that will inform the public
about the work of the animal shelter. Provide enough information
to convince Lesley Thompson of the importance of ... and acceptable for the
test. What is most important is that students choose
one format and use it consistently so that the overall
appearance of the letter is attractive.
Note: Students should...
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Báo cáo khoa học: Pressure and heat inactivation of recombinant human acetylcholinesterase Importance of residue E202 for enzyme stability pdf
Ngày tải lên :
08/03/2014, 10:20
... lower for wild-type enzyme than for
D74N and E202Q, allowing flexibility of the gorge for
entrance and binding of substrates or inhibitors and exit of
reaction products. The carboxylic groups of ... water molecules in the active site
gorges of TcAChE and HuAChE is evidence for the
importance of water in the structure of AChE. The structure
and number of water molecules in the gorge and bound ... mechanism of
the pressure denaturation process of rHuAChE, ANS
binding measurements were performed. ANS has been used
for probing hydrated hydrophobic surfaces in proteins [35]
and formation of molten...
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Báo cáo khoa học: "The role of positive feedback in Intelligent Tutoring Systems" ppt
Ngày tải lên :
31/03/2014, 00:20
... effect of positive feedback is
positive, but the effect of negative feedback is nega-
tive, as can be seen by the sign of the β value.
4 A tutoring system for linked lists
A new ITS in the domain of ... might be the educational value of positive
feedback in ITSs? First of all, positive feedback
may be an effective motivational technique (Lepper
et al., 1997). Positive feedback can also have cog-
nitive ... ns. For stacks,
F (1, 47) = 1.35, P = ns. For trees, F(1, 53) =
0.32, P = ns.
The learning gain of students that received tutor-
ing is significantly higher than the learning gain of
the students...
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Báo cáo sinh học: "Importance of disulphide bonds for vaccinia virus L1R protein function" pot
Ngày tải lên :
19/06/2014, 08:20
... solely in the lumen of the ER.
This study has shown that only two of the three intramo-
lecular disulphide bonds are essential for L1R to perform
its function in formation of infectious IMV particles.
Cysteine ... http://www.virologyj.com/content/2/1/91
Page 3 of 5
(page number not for citation purposes)
(A) Diagram of the location of the six cysteine residues in L1RFigure 2
(A) Diagram of the location of the six cysteine residues ... conditional-lethal expression of L1R and
complementation with a library of cysteine-to-serine L1R
mutants was used to investigate the importance of disul-
phide bond formation and the presence of the contribut-
ing...
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Báo cáo hóa học: " Exploring the bases for a mixed reality stroke rehabilitation system, Part II: Design of Interactive Feedback for upper limb rehabilitation" doc
Ngày tải lên :
19/06/2014, 08:20
... manageable number of specific aspec ts of his perfor-
mance (e.g., by increasing sensitivity of feedback mapped
to trajectory error) while deemphasizing others (e.g., by
turning off feedback for excessive ... within
the representation of action provides detailed informa-
tion on movement performance for generation of the
interactive media-based feedback.
Design of Interactive media-based feedback
The interactive ... improvement.
Table5alsoliststhedifferencein%improvement
for feedback versus no feedback trials in the perfor-
mance of a given kinematic variable following the trig-
gering of feedback mapped to different kinematic
variables...
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báo cáo hóa học:" Importance of disulphide bonds for vaccinia virus L1R protein function" docx
Ngày tải lên :
20/06/2014, 04:20
... http://www.virologyj.com/content/2/1/91
Page 3 of 5
(page number not for citation purposes)
(A) Diagram of the location of the six cysteine residues in L1RFigure 2
(A) Diagram of the location of the six cysteine residues ... conditional-lethal expression of L1R and
complementation with a library of cysteine-to-serine L1R
mutants was used to investigate the importance of disul-
phide bond formation and the presence of the contribut-
ing ... Infections
were performed by transfection of 2 àg of pL1R containing double Cysteine-to-Serine mutations in the coding sequence at
time of infection with VV-TetO:L1R at an MOI of 0.1 under non-permissive...
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Báo cáo toán học: " Existence of Positive Solutions for Nonlinear m-point Boundary Value Problems on Time Scales" doc
Ngày tải lên :
20/06/2014, 20:20
... problems of ordinary differential equations (BVPs for short)
arise in a variety of different areas of applied mathematics and physics. For example, the
vibrations of a guy wire of a uniform cross ... 2.8. For u ∈ P, there holds u(t) ≥
t
T
u for t ∈ [0, T ].
Proof. For u ∈ P, we have u
∆∇
(t) ≤ 0, it follows that u
∆
(t) is non-increasing. Therefore, for
0 < t < T,
u(t) − u(0) =
t
0
u
∆
(s)∆s ... Triple positive solutions of boundary value problems for p-Laplacian
dynamic equations on time scales. J. Math. Anal. Appl. 321, 911–920 (2006)
16. Hong, S: Triple positive solutions of three-point...
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Báo cáo hóa học: "Existence of positive solutions for nonlocal second-order boundary value problem with variable parameter in Banach spaces" doc
Ngày tải lên :
21/06/2014, 00:20
... People’s
Republic of China
Abstract
By obtaining intervals of the parameter l, this article investigates the existence of a
positive solution for a class of nonlinear boundary value problems of second-order
differential ... for a strict set contraction operator.
MSC: 34B15; 34B16.
Keywords: boundary value problem, positive solution, fixed point theorem, measure
of noncompactness
1 Introduction
The existence of positive ... ||x||
c
=max
tẻI
||x(t)|| for x ẻ C[I, E]. In the following, x ẻ C[I,
E] is called a solution of (1.1) if it satisfies (1.1). x is a positive solution of (1.1) if, in addi-
tion, x(t)> for t ẻ (0, 1).
In...
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báo cáo hóa học: " Existence and multiplicity of positive solutions for a nonlocal differential equation" docx
Ngày tải lên :
21/06/2014, 02:20
... yantaicity@163.
com
1
College of Aeronautics and
Astronautics, Nanjing University of
Aeronautics and Astronautics,
Nanjing 210016, People’s Republic
of China
Full list of author information is
available at the end of the ... of positive solutions of nonlocal BVPs (see [3-9]
and references therein). Inspired by the above references, our aim in the present paper is
to investigate the existence and multiplicity of positive ... rate of strain proportional to
a power of stress multiplied by a function of temperature, etc. In [1,2], the authors use
the Kras -noselskii fixed point theorem to obtain one positive solution for...
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Báo cáo hóa học: " Research Article Existence of Positive Solutions for Nonlocal Fourth-Order Boundary Value Problem with Variable Parameter" doc
Ngày tải lên :
21/06/2014, 07:20
... “Existence of positive solutions of a BVP for u
4
t −λhtfut 0,” Chinese
Annals of Mathematics. Series A, vol. 20, no. 5 , pp. 575–578, 1999.
14 Q. Yao, “Local existence of multiple positive ... for nonlocal boundary value problems of fourth order,”
Nonlinear Analysis. Theory, Methods & Applications, vol. 68, no. 3, pp. 645–651, 2008.
9 R. Ma, “Existence of positive solutions of ... method for some fourth-order boundary value problems,”
Nonlinear Analysis. Theory, Methods & Applications, vol. 67, no. 6, pp. 1704–1709, 2007.
3 G. Chai, “Existence of positive solutions for...
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báo cáo hóa học:" Existence of Positive Solutions for Nonlinear m-point Boundary Value Problems on Time Scales" pdf
Ngày tải lên :
21/06/2014, 17:20
... problems of ordinary differential equations (BVPs for short)
arise in a variety of different areas of applied mathematics and physics. For example, the
vibrations of a guy wire of a uniform cross ... for any ε > 0, there
is neighborhood U of t such that
[x(σ(t)) − x(s)] − x
∆
(t)[σ(t) − s]
< ε|σ(t) − s|
for all s ∈ U. For x : T → R and t ∈ T
κ
, we define the “∇” derivative of ... 2.8. For u ∈ P, there holds u(t) ≥
t
T
u for t ∈ [0, T ].
Proof. For u ∈ P, we have u
∆∇
(t) ≤ 0, it follows that u
∆
(t) is non-increasing. Therefore, for
0 < t < T,
u(t) − u(0) =
t
0
u
∆
(s)∆s...
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báo cáo hóa học:" Existence of Positive Solutions for Nonlinear m-point Boundary Value Problems on Time Scales" pptx
Ngày tải lên :
21/06/2014, 17:20
... problems of ordinary differential equations (BVPs for short)
arise in a variety of different areas of applied mathematics and physics. For example, the
vibrations of a guy wire of a uniform cross ... Triple positive solutions of boundary value problems for p-Laplacian
dynamic equations on time scales. J. Math. Anal. Appl. 321, 911–920 (2006)
16. Hong, S: Triple positive solutions of three-point ... T
φ
q
T
0
h(s)∇s
≤ u,
which means that for u ∈ ∂Ω
r
∩ P, Au ≤ u.
On the other hand, for u ∈ P, in view of Lemma 2.8, there holds u(t) ≥
ξ
1
T
u, for
9
subject to one of the following boundary conditions
u(0)...
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báo cáo hóa học:" Existence of positive solutions for fourth-order semipositone multi-point boundary value problems with a sign-changing nonlinear term" docx
Ngày tải lên :
21/06/2014, 17:20
... 1. Here, by a positive solution
of the problem (1.1) we mean a function y
∗
(t) which is positive on (0, 1) and satisfies the
problem (1.1).
The existence of positive solutions for multi-point ... z(t)]
∗
+ p(t)
Therefore x(t) is a positive solution of the problem (2.15) with x(t) ≥ z(t) for t ∈ [0, 1].
Conversely, we assume that x(t) and z(t) are positive solutions of the problem (2.15)
and ... setting. Gupta [3] proved the existence of
4
to the derivation of the main results. The proof of the main results will be stated in
Section 3. A class of examples are given to show that our main...
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báo cáo hóa học:" Existence and multiplicity of positive solutions for a class of p(x)-Kirchho type equations" ppt
Ngày tải lên :
21/06/2014, 17:20
... results for the weak solution of
P
f
λ
. Ap-
plying Theorems 4.1 and 4.4 of [44] and Theorem 1.3 of [37], we can easily get the following
results involving of the regularity of weak solutions of
P
f
λ
.
Proposition ... solution of (4.4
λ
), must
satisfy v
λ
≥ u
λ
, and v
λ
is also a solution of
P
f
λ
. The proof of Theorem 1.2 is complete.
Proof of Theorem 1.3. (1) Let f satisfy (1.4), (1.9), and (1.10). For ... get the multiplicity of positive solutions of
P
f
λ
1
with M(t) ≡ 1. The
aim of the present paper is to generalize the main results of [34–36] to the p(x)-Kirchhoff
case. For simplicity we shall...
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