bluuebunny/crossref_metadata_2025_split huggingface dataset:
The role of diagram materiality in mathematics
Authors: Steensen Anna Kiel , Johansen Mikkel Willum 
Published: November 2016

AbstractBased on semiotic analyses of examples from the history of mathematics, we claim that the influence of the material aspects of diagram tokens is anything but trivial. We offer an interpretation of examples of diagrammatic reasoning processes in mathematics according to which the mathematical ideas, arguments, and concepts in question are shaped by the physical features of the chosen diagram tokens.
A Monte Carlo Study on the Effect of Energy Barriers on the Thermoelectric Properties of Si
Authors: Zianni Xanthippi , Chantrenne Patrice , Narducci Dario 
Published: November 2016

Abstract
Energy filtering by energy barriers has been proposed to interpret observations on large thermoelectric power factor (TPF) enhancement in highly doped nanocrystalline Si (nc-Si). Previous Boltzmann transport equation (BTE) modeling indicated that high TPFs could be explained as the result of the presence of energy barriers at the grain boundaries, the high Fermi energy due to the high doping level, and the formation of a low thermal conductivity second phase. To test the assumptions of the BTE modeling and provide more realistic simulations, we have performed Monte Carlo (MC) simulations on the transport properties of composite nc-Si structures. Here, we report on (i) the effect of an energy barrier, and (ii) the effect of multiple barriers on the conductivity and the Seebeck coefficient. In short structures, a TPF enhancement was found and it has been attributed to energy filtering by the energy barrier. The MC indicated that the TE performance can be improved by multiple barriers in close separation. It has been shown that TPF enhancement is possible even when the condition for thermal conductivity non-uniformity across the composite structure is not-fulfilled.
Qualitative properties of positive solutions of quasilinear equations with Hardy terms
Authors: Lei Yutian 
Published: November 2016

Abstract
In this paper, we are concerned with the following quasilinear PDE with a weight:

-

div
⁡
A

⁢

(
x
,

∇
⁡
u

)

=

|
x
|

a

⁢

u
q

⁢

(
x
)

,

u
>

0

in
⁢

ℝ
n

,

-\operatorname{div}A(x,\nabla u)=|x|^{a}u^{q}(x),\qquad u>0\quad\text{in }%
\mathbb{R}^{n},

where

n
≥
1

{n\geq 1}

,

q
>

p
-
1

{q>p-1}

with

p
∈

(
1
,
2
]

{p\in(1,2]}

and

a
≤
0

{a\leq 0}

.
The positive weak solution u of the quasilinear PDE is

𝒜

{\mathcal{A}}

-superharmonic.
We also consider an integral equation involving the Wolff potential

u
⁢

(
x
)

=

R
⁢

(
x
)

⁢

W

β
,
p

⁢

(

|
y
|

a

⁢

u
q

⁢

(
y
)

)

⁢

(
x
)

,

u
>

0

in
⁢

ℝ
n

,

u(x)=R(x)W_{\beta,p}(|y|^{a}u^{q}(y))(x),\qquad u>0\quad\text{in }\mathbb{R}^{%
n},

which the positive solution u of the quasilinear PDE satisfies.
Here

β
>
0

{\beta>0}

and

p
⁢
β

<
n

{p\beta<n}

.
When

-
a

>

p
⁢
β

{-a>p\beta}

or

0
<
q
≤

(

n
+
a

)

⁢

(

p
-
1

)

n
-

p
⁢
β

{0<q\leq\frac{(n+a)(p-1)}{n-p\beta}}

, there does not exist any positive solution to this integral equation.
On the other hand, when

0
≤

-
a

<

p
⁢
β

{0\leq-a<p\beta}

and

q
>

(

n
+
a

)

⁢

(

p
-
1

)

n
-

p
⁢
β

{q>\frac{(n+a)(p-1)}{n-p\beta}}

, the positive
solution u of the integral equation is bounded and decays with the fast rate

n
-

p
⁢
β

p
-
1

{\frac{n-p\beta}{p-1}}

if and only if it is integrable (i.e., it belongs to

L

n
⁢

(

q
-
p

+
1

)

p
⁢
β

+
a

⁢

(

ℝ
n

)

{L^{\frac{n(q-p+1)}{p\beta+a}}(\mathbb{R}^{n})}

).
However, if the bounded solution is not integrable and decays with some rate,
then the rate must be the slow one

p
⁢
β

+
a

q
-
p

+
1

{\frac{p\beta+a}{q-p+1}}

.
In addition, we also discuss the case of

-
a

=

p
⁢
β

{-a=p\beta}

.
Thus, all the properties above are still true for the quasilinear PDE.
Weyl asymptotics for Hanoi attractors
Authors: Alonso Ruiz Patricia , Freiberg Uta R. 
Published: November 2016

Abstract
This paper studies the asymptotic behavior of the eigenvalue counting function of the Laplacian on some weakly self-similar fractals called Hanoi attractors.
A resistance form is constructed and equipped with a suitable measure in order to obtain a Dirichlet form and its associated Laplacian.
Hereby, the classical construction for p.c.f. self-similar fractals has to be modified by combining discrete and quantum graph methods.
Direct Acid Leaching of Vanadium from Stone Coal
Authors: Zhang Bo , Gao Zhaoguo , Liu Hongzhao , Wang Wei , Cao Yaohua 
Published: November 2016

AbstractThis paper focused on optimizing the process conditions of direct acid leaching process to enhance the leaching efficiency of leaching vanadium from the stone coal. Orthogonal experiments and single factor experiments were conducted to investigate the effect of the influential factors of direct acid leaching on vanadium leaching ratio. The results showed that the vanadium leaching ratio reached the maximum value of 89.22 % under the optimal process conditions of CaF2 dosage 5 mass%, H2SO4 dosage 40 mass%, leaching temperature 95 °C and leaching time 10 h. Furthermore, the reaction mechanisms of the main influencing factors were analyzed. Finally, the two-stage counter-current leaching process was adopted to decrease the consumption of sulfuric acid and neutralizer, and the results indicated that the consumption of sulfuric acid decreased 12.50 % as well as neutralizer decreased 35.80 %.
Improved Control Strategy for Subsynchronous Resonance Mitigation with Fractional-order PI Controller
Authors: Raju D. Koteswara , Umre Bhimrao S. , Junghare A.S. , Chitti Babu B. 
Published: November 2016

Abstract
This paper explores a robust Fractional-order PI (FOPI) controller to diminish Subsynchronous Resonance (SSR) using Static Synchronous series compensator (SSSC). The diminution of SSR is accomplished by increasing the network damping with the injection of voltage of subsynchronous component into the line at those frequencies which are proximate to the torsional mode frequency of the turbine-generator shaft. The voltage of subsynchronous frequency component is extracted from the transmission line and further the similar quantity of series voltage is injected by SSSC into the line to make the current of subsynchronous frequency component to zero which is the major source of oscillations in the turbine-generator shaft. The insertion and fine tuning of Fractional-order PI controller in the control scheme of SSSC the subsynchronous oscillations are reduced to 4 % as compared to conventional PI controller. The studied system is modelled and simulated using MATLAB-Simulink and the results are analysed to show the precision and robustness of the proposed control strategy.
The Impact of Default on Tax Shield Valuation
Authors: Lahmann Alexander , Arnold Sven , Gmehling Philipp 
Published: November 2016

AbstractIn this paper we develop a model to value debt related tax savings and associated yield rates for debt in a setting where future cash flows are uncertain and follow a stochastic diffusion process. By explicitly modeling a default trigger we find that tax shield values in standard Discounted Cash Flow (DCF) valuation formulas are too high as they do not correctly incorporate the risk of default. Furthermore, we are able to endogenously derive risk-adjusted yield rates, while keeping the overall simple and tractable structure of the DCF approach.
A derivative-free iterative method for nonlinear ill-posed equations with monotone operators
Authors: George Santhosh , Nair M. Thamban 
Published: November 2016

Abstract
Recently, Semenova [12] considered a derivative free iterative method for nonlinear ill-posed operator equations with a monotone operator. In this paper, a modified form of Semenova’s method is considered providing simple convergence analysis under more realistic nonlinearity assumptions. The paper also provides a stopping rule for the iteration based on an a priori choice of the regularization parameter and also under the adaptive procedure considered by Pereverzev and Schock [11].
Time varying axially symmetric vector random fields on the sphere
Authors: Ma Chunsheng 
Published: November 2016

Abstract
This paper presents a general form of the covariance matrix structure for a vector random field that is axially symmetric and mean square continuous on the sphere and
provides a series representation for a longitudinally reversible one.
The series representation is somehow an imitator of the covariance matrix function, and both of them have simpler forms than those proposed
in the literature in terms of the associated Legendre functions and are useful for modeling and simulation.
Also, a general form of the covariance matrix structure
is derived for a spatio-temporal vector random field that is axially symmetric and mean square continuous over the sphere,
and a series representation is given for a longitudinally reversible one.
Stability of fractional neutral stochastic partial integro-differential equations
Authors: Xu Liping , Li Zhi 
Published: November 2016

Abstract
In this paper, we are concerned with a class of fractional partial neutral stochastic integro-differential equations in Hilbert spaces. We assume that the linear part of this equation generates an α-resolvent operator and transform it into an integral equation. By the stochastic analysis and fractional calculus technique, and combining some integral inequalities, we obtain some sufficient conditions ensuring the exponential p-stability of the mild solution of the considered equations are obtained. Subsequently, by the weak convergence approach, we have a try to deal with the stability conditions in distribution of the segment process of mild solutions to the stochastic systems under investigation. Last, an example is presented to illustrate our theory in the work.
Prediction of the long-term efficacy of STA-MCA bypass by DSC-PI
Authors: Hui Li , Hui Liu , Tong Han 
Published: November 2016

Abstract
Superficial temporal artery-middle cerebral artery (STA-MCA) bypass [1,2] is an important and effective type of surgical revascularization that is widely used in the treatment of ischemic cerebral artery disease. However, a means of predicting its postoperative efficacy has not been established [3,4]. The present study analyzes the correlation between preoperative perfusion parameters (obtained using dynamic susceptibility contrast-enhanced perfusion imaging, DSC-PI) and postoperative long-term prognosis (using modified Rankin Scale, mRS scores). The preoperative perfusion parameters were defined by a combination of perfusion-weighted imaging and the Alberta Stroke Program Early Computerized Tomography Score (PWI-ASPECTS) and included cerebral blood flow (CBF)-ASPECTS, cerebral blood volume (CBV)-ASPECTS, mean transit time (MTT)-ASPECTS, and time to peak (TTP)-ASPECTS. Preoperative and postoperative scores were determined for 33 patients that received a unilateral STA-MCA bypass in order to discover the most reliable imaging predictive index as well as to define the threshold value for a favorable clinical outcome. The results showed that all of the PWI-ASPECTS scores were significantly negatively correlated with clinical prognosis. Receiver operating curve (ROC) analysis of the preoperative parameters in relation to long term prognosis showed the area under curve (AUC) was maximal for the CBF-ASPECTS score (P = 0.002). A preoperative score of less than six indicated a poor postoperative prognosis (sensitivity = 74.1%, specificity = 100%, AUC = 0.843). In conclusion, preoperative PWI-ASPECTS scores have been found useful as predictive indexes for the long-term prognosis of STA-MCA bypass patients, with higher scores indicating better postoperative long-term outcomes. As the most valuable prognostic indicator, the preoperative CBF-ASPECTS score has potential for use as a major index in screening and outcome prediction of patients under consideration for STA-MCA bypass surgery.
Deletion of the Mouse Homolog ofCACNA1CDisrupts Discrete Forms of Hippocampal-Dependent Memory and Neurogenesis within the Dentate Gyrus
Authors: Temme Stephanie J. , Bell Ryan Z. , Fisher Grace L. , Murphy Geoffrey G. 
Published: November 2016

AbstractL-type voltage-gated calcium channels (LVGCCs) have been implicated in various forms of learning, memory, and synaptic plasticity. Within the hippocampus, the LVGCC subtype, CaV1.2 is prominently expressed throughout the dentate gyrus. Despite the apparent high levels of CaV1.2 expression in the dentate gyrus, the role of CaV1.2 in hippocampal- and dentate gyrus-associated forms of learning remain unknown. To address this question, we examined alternate forms of hippocampal-dependent associative and spatial memory in mice lacking the mouse ortholog ofCACNA1C(Cacna1c), which encodes CaV1.2, with dentate gyrus function implicated in difficult forms of each task. We found that while the deletion of CaV1.2 did not impair the acquisition of fear of a conditioned context, mice lacking CaV1.2 exhibited deficits in the ability to discriminate between two contexts, one in which the mice were conditioned and one in which they were not. Similarly, CaV1.2 knock-out mice exhibited normal acquisition and recall of the location of the hidden platform in a standard Morris water maze, but were unable to form a memory of the platform location when the task was made more difficult by restricting the number of available spatial cues. Within the dentate gyrus, pan-neuronal deletion of CaV1.2 resulted in decreased cell proliferation and the numbers of doublecortin-positive adult-born neurons, implicating CaV1.2 in adult neurogenesis. These results suggest that CaV1.2 is important for dentate gyrus-associated tasks and may mediate these forms of learning via a role in adult neurogenesis and cell proliferation within the dentate gyrus.
A Review of Numerical Simulation and Analytical Modeling for Medical Devices Safety in MRI
Authors: Kabil J. , Belguerras L. , Trattnig S. , Pasquier C. , Missoffe A. , Felblinger J. 
Published: November 2016

Summary
Objectives: To review past and present challenges and ongoing trends in numerical simulation for MRI (Magnetic Resonance Imaging) safety evaluation of medical devices.
Methods: A wide literature review on numerical and analytical simulation on simple or complex medical devices in MRI electromagnetic fields shows the evolutions through time and a growing concern for MRI safety over the years. Major issues and achievements are described, as well as current trends and perspectives in this research field.
Results: Numerical simulation of medical devices is constantly evolving, supported by calculation methods now well-established. Implants with simple geometry can often be simulated in a computational human model, but one issue remaining today is the experimental validation of these human models. A great concern is to assess RF heating on implants too complex to be traditionally simulated, like pacemaker leads. Thus, ongoing researches focus on alternative hybrids methods, both numerical and experimental, with for example a transfer function method. For the static field and gradient fields, analytical models can be used for dimensioning simple implants shapes, but limited for complex geometries that cannot be studied with simplifying assumptions.
Conclusions: Numerical simulation is an essential tool for MRI safety testing of medical devices. The main issues remain the accuracy of simulations compared to real life and the studies of complex devices; but as the research field is constantly evolving, some promising ideas are now under investigation to take up the challenges.
Efficient Results in Semantic Interoperability for Health Care
Authors: Charlet J. , Soualmia L. F. ,   Section Editors for the IMIA Yearbook Section on Knowledge Representation and Management
Published: November 2016

Summary
Objectives: To summarize excellent current research in the field of Knowledge Representation and Management (KRM) within the health and medical care domain.
Method: We provide a synopsis of the 2016 IMIA selected articles as well as a related synthetic overview of the current and future field activities. A first step of the selection was performed through MEDLINE querying with a list of MeSH descriptors completed by a list of terms adapted to the KRM section. The second step of the selection was completed by the two section editors who separately evaluated the set of 1,432 articles. The third step of the selection consisted of a collective work that merged the evaluation results to retain 15 articles for peer-review.
Results: The selection and evaluation process of this Yearbook’s section on Knowledge Representation and Management has yielded four excellent and interesting articles regarding semantic interoperability for health care by gathering heterogeneous sources (knowledge and data) and auditing ontologies. In the first article, the authors present a solution based on standards and Semantic Web technologies to access distributed and heterogeneous datasets in the domain of breast cancer clinical trials. The second article describes a knowledge-based recommendation system that relies on ontologies and Semantic Web rules in the context of chronic diseases dietary. The third article is related to concept-recognition and text-mining to derive common human diseases model and a phenotypic network of common diseases. In the fourth article, the authors highlight the need for auditing the SNOMED CT. They propose to use a crowd-based method for ontology engineering.
Conclusions: The current research activities further illustrate the continuous convergence of Knowledge Representation and Medical Informatics, with a focus this year on dedicated tools and methods to advance clinical care by proposing solutions to cope with the problem of semantic interoperability. Indeed, there is a need for powerful tools able to manage and interpret complex, large-scale and distributed datasets and knowledge bases, but also a need for user-friendly tools developed for the clinicians in their daily practice.
Гендерные стереотипы как предмет дискуссии студенческой молодежи
Authors: Селиверстова Нина Анатольевна 
Published: November 2016

<p>В статье рассматривается опыт организации практических занятий по теме «Культура как фактор социальных изменений» в рамках вузовской дисциплины «Социология». В ходе занятий преподаватель фиксирует изменение гендерных стереотипов в отношении социальных ролей женщины и мужчины. </p>
Специфика трудовой адаптации российской молодежи
Authors: Ромашова Людмила Олеговна 
Published: November 2016

<p>В статье рассматривается проблема адаптации на рынке труда российской молодежи. Раскрывается содержание понятия трудовой адаптации, проанализированы ее разновидности. </p>
Социальный портрет работающего студента
Authors: Короткова Марина Сергеевна 
Published: November 2016

<p>В статье анализируются вопросы вторичной занятости студентов, объективные и субъективные причины подработки, основные сферы студенческой трудовой деятельности, преимущества и недостатки совмещения работы и учебы. На основе различий в мотивации выделяются разнообразные категории работающих студентов, тенденции в развитии студенческой занятости. </p>
Серебряный век и русское кино эпохи авангарда
Authors: Попова Лиана Владимировна 
Published: November 2016

<p>В статье исследуется русский кинематограф как наследие культуры Серебряного века, как сочетание «духа пластики» и «духа музыки», аполлонического и дионисийского. </p>
The Effect of TrainingIndividuals with Mild Intellectual Disability in Scaffolding Strategiesand Computer softwareon Their Generalization Skills
Authors: Jalloul Farah , ELDaou Badrie 
Published: November 2016

The study aimed at investigating the effect of scaffolding strategies as thinking out loud and verbalization of instructions strategies on the generalization skills of language-related concepts in mildly intellectual disabled students. Twenty-seven subjects in three treatments were trained in solving a pattern of the Thurston letter series task. Group1 students received language concepts through training in verbal instructions and thinking out loud strategy. Group 2 students received language concepts training through computers. Group 3 students received training in language concepts through thinking out loud, verbal instructions and computer software. Pre-training measures to subjects’ chronological age, Verbal Analogies Test and training trials were collected. Training measures pertaining to acquisition, maintenance and generalization of pattern completion tasks were collected. Mean scores and standard deviations were obtained for each dependent measure. The treatment effect was studied by a series of one way ANOVAS and a tukey post hoc test, which revealed that there was a significant difference between group1 and group 2, since the difference between the means (m1- m3) = -2.556 and p= 0.000. Also, the difference is shown between group 2 and group 3 since the difference between the means (m2- m3) = -2.333 and p= 0.000 and in both cases p is less than 0.05. Moreover, group 3 had a higher mean (M= 3.89) than group2 (M= 1.56) and group1 (M= 1.33). Group 3 had the ability to become self –regulated by solving the untrained letter patterns. Thus, we can conclude that training in scaffolding strategies, such as thinking out loud and verbalization of instruction strategies, helped individuals with an intellectual disability to acquire metacognitive strategies. This enabled them to generalize the learning experience and become self-regulated and better problem solvers. Also, using a computer program promoted the use of metacognitive strategies. Once students internalize target strategies, they can transfer these to second language patterns; therefore, it enhances the generalization of learning individuals with an intellectual disability. Recommendations for further research were discussed. Keywords:Metacognitive strategies; Intellectual disability; Language related- concepts; Thinking out loud; computer training; verbal instructions, scaffolding strategy.
Nicolasa Gotay Norales (1973…) Una historia de revisibilización de la cultura garífuna
Authors: Lopez Perez Danilo , Flores Luin Walda Paola 
Published: November 2016

Maestra afrodescendiente de la etnia Garífuna. Trabajó ad honorem en un barrio pobre en su ciudad natal, donde fundó la escuela de preprimaria. Alfabetizó soldados. Con su sueldo por alfabetizar, compraba útiles escolares para los niños. Enseña en la escuela, donde cursó la educación primaria y donde, de niña, le prohibieron hablar su idioma materno. Promueve educación acorde a la realidad idiomática y cultural de su Pueblo. Su aula es una muestra elementos culturales garífuna como la pesca, alimentación, valores y otros. El trabajo surgió en el marco del proyecto de investigación titulado Maestras Africanas y Afrodescendientes en Colombia, Brasil, Guatemala, Venezuela, Guinea Ecuatorial, siglo XX a XXI, en una línea de investigación sobre Educadores Latinoamericanos. Método: Historia de vida, con enfoque cualitativo. Se hicieron visitas de campo. Se entrevistó a Nicolasa, personas que la conocen y a familiares. Esta investigación se realizó en el municipio de Puerto Barrios, cabecera del departamento de Izabal, Guatemala, bajo la coordinación técnica y financiamiento de la Escuela de Formación de Profesores de Enseñanza Media, de la Universidad de San Carlos de Guatemala. Ha incidido en el desarrollo de su práctica educativa al evidenciar la resiliencia, el orgullo y persistencia de las mujeres garífunas, al iniciar una escuela de educación preprimaria, al recuperar y dar a conocer a estudiantes y comunidad, la cosmovisión y valores de la cultura garífuna; entre ellos, el idioma, danza y música. Altamente responsable, comprometida con su labor docente; impacta dentro de los procesos sociales, culturales y políticos, para el cambio de mentalidad de una sociedad que por muchos años ha estado dentro de un ambiente de discriminación y racismo, para proyectar una identidad cultural y desarrollo educativo para el propio beneficio y superación permanente del pueblo Garífuna.