bluuebunny/crossref_metadata_2025_split huggingface dataset:
La Idea de los Flujos en la Poesía Digital Hispánica: Algunos Ejemplos
Authors: Corral Cañas Celia 
Published: March 2016

Na criação computacional de âmbito hispânico, a ideia dos fluxos emerge como uma questão-chave, tanto pelo próprio contexto histórico e social de globalização e de transnacionalidade actual, como pelo tema central de algumas obras fundamentais e pela trajetória de vida dos autores, entre os quais se destacam os autores hispanoamericanos que publicam e criam no panorama peninsular espanhol. Por outro lado, a ideia de nomadismo converge com a comunicação via Internet, um meio de alcance global onde é possível o diálogo de forma simultânea entre pessoas localizadas em diferentes partes do mundo, pelo que se assume uma nova conceção espacial que ultrapassa o território físico real. Além disso, do ponto de vista artístico, o espaço é abordado pelas regras vigentes no ecrã, onde predomina uma nova visualização nos subgéneros da poesia digital, que difere da leitura analógica linear.DOI: http://dx.doi.org/10.14195/2182-8830_4-1_8
Desempeño ambiental de recintos habitacionales. Comparación de simulaciones, monitorización y percepción de residentes en seis viviendas de Concepción, Chile
Authors: García Alvarado Rodrigo , Herrera Ojeda Rodrigo , Muñoz Viveros Cristián , Wandersleben Gerth 
Published: March 2016

<p class="Default"> <span>Los estudios y proyectos habitacionales consideran las viviendas de manera unitaria, sin diferenciar las condiciones ambientales por recintos, aunque en la vivencia cotidiana se reconocen variaciones. Este ar­tículo realiza una comparación entre los datos pro­porcionados por simulaciones computacionales de desempeño térmico y monitoreos físicos de recin­tos, que registran valores existentes, y percepciones de sus habitantes en torno a su ambiente residencial en seis viviendas de Concepción, Chile. Con el fin de caracterizar las diferencias ambientales que sur­gen en los hogares, como también las originadas en los distintos recintos, en lo que es la construcción de la confortabilidad. Las simulaciones expresan al­gunas diferencias relevantes entre recintos (demandas energéticas anuales de 12 kW h/m</span><span class="A7"><span>2 </span></span><span>hasta 330 kW h/m</span><span class="A7"><span>2</span></span><span>), mientras las mediciones físicas revelan valores más acotados (diferencias entre temperatu­ras ambientales de menos de 5°C). Las entrevistas y observación de residentes sugieren apreciaciones si­milares, pero a la vez aportan otros aspectos (como una mayor valoración de los niveles superiores y ha­bitaciones con mayor luminosidad). Los resultados y conclusiones emanados del estudio aportan datos que pueden resultar de interés comparativo para la planificación y diseño habitacional en la zona, pero también un análisis que integra las distintas dimen­siones trabajadas del confort residencial y sus va­riaciones entre los recintos habitacionales, lo que resulta incidente para el ámbito de las políticas y ac­ciones de mejoramiento ambiental de las viviendas, destinadas a aumentar la calidad residencial.</span></p>
Ground States for a Nonlinear Elliptic Equation Involving Multiple Hardy–Sobolev Critical Exponents
Authors: Guo Zhenyu 
Published: March 2016

Abstract
The present paper studies the nonlinear elliptic equation

{

Δ
⁢
u

+

λ

|
x
|

s

⁢

u

p
-
1

+

∑

i
=
1

l

λ
i

|
x
|

s
i

⁢

u

2
∗

⁢

(

s
i

)

-
1

+

u

2
∗

-
1

=
0

in
⁢
Ω

,

u

>
0

in
⁢
Ω

,

u

=
0

on
⁢

∂
⁡
Ω

,

$\left\{\begin{aligned} \displaystyle\Delta u+\frac{\lambda}{|x|^{s}}u^{p-1}+% \sum_{i=1}^{l}\frac{\lambda_{i}}{|x|^{s_{i}}}u^{2^{\ast}(s_{i})-1}+u^{2^{\ast}% -1}&\displaystyle=0&&\displaystyle\text{in }\Omega,\\ \displaystyle u&\displaystyle>0&&\displaystyle\text{in }\Omega,\\ \displaystyle u&\displaystyle=0&&\displaystyle\text{on }\partial\Omega,\end{% aligned}\right.$

which involves multiple Hardy–Sobolev critical exponents, where

λ
≠
0

${\lambda\neq 0}$

,

s
∈

[
0
,
2
)

${s\in[0,2)}$

,

p
∈

(
2
,

2
∗

⁢

(
s
)

)

${p\in(2,2^{\ast}(s))}$

,

0
<

s
1

<
⋯
<

s
l

<
2

$0<s_{1}<\cdots<s_{l}<2$

,

λ
1

,
…
,

λ
k

>
0

${\lambda_{1},\dots,\lambda_{k}>0}$

,

λ

k
+
1

,
…
,

λ
l

<
0

${\lambda_{k+1},\dots,\lambda_{l}<0}$

for some

k
∈

[
1
,
l
]

${k\in[1,l]}$

and Ω is a

C
1

$C^{1}$

open bounded domain in

ℝ
N

$\mathbb{R}^{N}$

,

N
≥
3

${N\geq 3}$

, containing the origin. The existence of a positive ground state solution is established when

λ
>
0

${\lambda>0}$

and

p
≥

2
∗

⁢

(

s
k

)

${p\geq 2^{\ast}(s_{k})}$

.
Application of the artificial neural network and imperialist competitive algorithm for optimization of molecularly imprinted solid phase extraction of methylene blue
Authors: Khajeh Mostafa , Moghaddam Shahnaz Afzali , Bohlooli Mousa , Ghaffari-Moghaddam Mansour 
Published: March 2016

AbstractIn this study, a hybrid of the artificial neural network-imperialist competitive algorithm (ANN-ICA) has been applied for prediction and optimization of the molecularly imprinted solid phase extraction method. This method has been used for the pre-concentration of methylene blue (MB) from environmental water samples prior to UV-Vis spectrophotometry. Molecular imprinted polymer sorbents were synthesized using radical polymerization by MB, 4-vinylpyridine, ethylene-glycol-dimethacrylate, 2,2′-azobisisobutyronitrile and methanol as a template, functional monomer, cross-linker, initiator, and porogen, respectively. The imprinted polymer was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The pH, adsorbent mass, adsorption time, eluent volume, and extraction time were been selected as input parameters and the recovery of MB was considered as an output variable of the ANN model. The results were then compared according to the performance function and determination coefficient. The Freundlich and Langmuir adsorption models were used to explain the isotherm constant. The maximum adsorption capacity was 417 mg g-1. At the optimized conditions, the limit of detection and relative standard deviation was found to be 0.31 μg l-1 and <1.7%, respectively. This method was applied to analysis the MB in various water samples.
Time inhomogeneous generalized Mehler semigroups and skew convolution equations
Authors: Ouyang Shun-Xiang , Röckner Michael 
Published: March 2016

Abstract
A time inhomogeneous generalized Mehler semigroup on a real separable
Hilbert space ℍ is defined through
p

s,t

f(x) = ∫ℍ
f(U(t,s)x + y)μ
t,s
(d
y),
s,t ∈ ℝ, t ≥ s, x ∈ ℍ,
for every bounded measurable function f on ℍ,
where (U(t,s))
t≥s
is an evolution family of bounded operators on ℍ and
(μ
t,s
)
t≥s
is a family of probability measures on (ℍ,ℬ(ℍ)) satisfying the following time inhomogeneous skew convolution equations:
μ
t,s
= μ
t,r
* (μ
r,s
∘ U(t,r)-1), t ≥ r ≥ s.
This kind of semigroups typically arise as
the “transition semigroups” of non-autonomous (possibly non-continuous) Ornstein–Uhlenbeck processes driven by some proper additive process.
Suppose that μ
t,s
converges weakly to δ0 as
t ↓ s or s ↑ t.
We show that μ
t,s
has further weak continuity properties in t and s.
As a consequence,
we prove that for every t ≥ s, μ
t,s
is infinitely divisible. Natural stochastic processes associated with (μ
t,s
)
t≥s
are constructed and are applied to get probabilistic proofs for the weak continuity and infinite divisibility. Then we analyze the structure, existence and uniqueness of the corresponding evolution systems of measures (= space-time invariant measures) of (p

s,t
)
t≥s
. We also establish a dimension free Harnack inequality for (p

s,t
)
t≥s
and present some of its applications.
Variations of Minkowski's theorem on successive minima
Authors: Henk Martin , Henze Matthias , Hernández Cifre María A. 
Published: March 2016

Abstract
Minkowski's second theorem in the Geometry of Numbers provides optimal upper
and lower bounds for the volume of an o-symmetric convex body in terms of
its successive minima. In this paper we study analogs of this theorem from
two different points of view: either relaxing the symmetry condition,
assuming that the centroid of the body lies at the origin, or replacing the
volume functional by the surface area.
Thermal Coupling in AlGaN/GaN Power Transistors
Authors: Schnieder Frank , Rudolph Matthias 
Published: March 2016

AbstractThermal coupling in AlGaN/GaN transistors is investigated by means of thermal FEM (finite element method) simulation. The results are combined with electrical network simulation using an electro-thermal model. From the FEM analysis the thermal coupling matrix is established, describing the thermal interaction between the different cells of a power transistor. The matrix allows to extract an equivalent circuit for the thermal coupling in a straightforward way. The electrical transistor model is complemented by thermal ports to connect the cells via the thermal coupling network. The electro-thermal model developed yields information on the distribution of temperature and currents within a powerbar and thus is an important tool in transistor design.
Experimental Multiport Bicone Antenna
Authors: Eskelinen Pekka , Ylinen Juhana 
Published: March 2016

AbstractA practical, easily manufactured multiport bicone antenna suitable for many receiving tasks such as direction finding systems can be made by using sharp-edged metal fins on the feeding coax center conductor to provide a tapered transition and connection path to coaxial probes. This construction resembles an arrow's tail. Already four mutually orthogonal fins can give full 360 degree azimuth coverage with suitable −3 dB port pattern overlap. Five experimental constructions working at Ku and Ka bands, each with fractional bandwidths of 23 to 31 per cent, are shown with full dimensional details. Suitable fin tapering is close to the full air gap in the coax and fin thickness should be less than 1/16th of the outer conductor diameter.
Irrationality measures for almost periodic continued fractions
Authors: Dodulíková Silvia , Hančl Jaroslav , Kolouch Ondřej , Leinonen Marko , Leppälä Kalle 
Published: March 2016

Abstract
We give general results which provide asymptotic irrationality measures
and estimations for the denominators of the convergents
for certain almost periodic simple continued fraction expansions.
As an application we obtain new irrationality measures, for example, to Napier's constant
e, certain powers of e,

tanh
1

${\tanh 1}$

and a ratio of modified Bessel functions.
Measurability properties of certain paradoxical subsets of the real line
Authors: Beriashvili Mariam 
Published: March 2016

Abstract
The paper deals with the measurability properties of
some classical subsets of the real line ℝ having
an extra-ordinary descriptive structure: Vitali sets, Bernstein sets,
Hamel bases, Luzin sets and Sierpiński sets. In
particular, it is shown that there exists a translation invariant
measure μ on ℝ extending the Lebesgue measure and such
that all Sierpiński sets are measurable with respect to μ.
Reaction kinetics of strong nucleophiles with a dimeric non-phenolic lignin model compound with α-carbonyl functionality (adleron) in aqueous alkali solution
Authors: Fearon Olesya , Kuitunen Susanna , Vuorinen Tapani 
Published: March 2016

Abstract
The degradation kinetics of a non-phenolic lignin model compound with α-carbonyl functionality (adlerone) has been studied by varying temperature and concentrations of sodium hydroxide, sodium hydrogen sulfide, and sodium sulfite. The kinetics of adlerone degradation and formation of its reaction products were monitored by UV-Vis spectroscopy and their structures were analyzed by GC/MS. The two step degradation of adlerone was studied in two separate experimental setups. In the first alkali catalyzed step, adlerone is converted to a β-elimination product that reacts further in the second step with hydrogen sulfide or sulfite ion. The Arrhenius kinetic parameters were derived by the KinFit software. The activation energy for the 1st step was 69.1 kJ mol-1, and for the 2nd step with sulfide 42.4 kJ mol-1 and with sulfite ion 35.8 kJ mol-1. The reaction mechanisms presented are in line with those published earlier: β-ether bonds of structures having α-carbonyl functionality do not cleave under soda pulping conditions, whereas in kraft and sulfite pulping the cleavage of β-ether bonds proceeds via nucleophile attack and addition. The combination of hydroxyl and sulfite ions gives the fastest cleavage of β-ether bonds in non-phenolic lignin structures with the α-carbonyl functionality.
High Efficiency CeCu Composite Oxide Catalysts Improved via Preparation Methods for Propyl Acetate Catalytic Combustion in Air
Authors: Lan Hai , Zhou Guilin , Luo Cuijuan , Yu Yinrong , Xie Hongmei , Zhang Guizhi 
Published: March 2016

Abstract
A famous hard-template method (HT), coprecipitation method (PC), and complex method (CA) were used to prepare CeCu composite oxide catalysts. The prepared catalysts were characterized via XRD, BET, Raman, XPS, FI–IR, and O2–TPD, and their catalytic activity and stability were evaluated for the propyl acetate catalytic combustion. The results showed that the CeCu oxide solid solution and oxygen vacancies were formed in the prepared CeCu oxide catalysts, even for CeCu–PC and CeCu–CA having a specific amount of isolated crystalline or amorphous CuO species. Comparing with the CeCu–PC and CeCu–CA of low porosity, CeCu–HT developed a mesoporous structure with a much larger specific surface area through a negative replica on the structure of KIT-6, and in it, CuO was completely dissolved in the CeO2 lattice to form more CeCu oxide solid solution and a large amount of oxygen vacancies. As a result, the CeCu–HT catalyst has more surface-adsorbed oxygen species, more –OH group which can also change into surface-adsorbed oxygen species at relatively high temperatures, higher oxygen desorption ability, and higher oxygen mobility than CeCu–PC and CeCu–CA. The CeCu–HT catalyst shows high and stable propyl acetate catalytic combustion performance at 190 °C. The propyl acetate catalytic combustion activity on the prepared CeCu oxide catalysts can be ranked as: CeCu–HT > CeCu–PC > CeCu–CA, which follows the orders of CeCu oxide solid solution content, surface-active oxygen content, and oxygen desorption and mobility of the CeCu composite oxide catalysts.
On hereditarily just infinite profinite groups obtained via iterated wreath products
Authors: Matteo Vannacci 
Published: March 2016

Abstract
We study a generalisation of the family of non-(virtually pro-p) hereditarily just infinite profinite groups introduced by J. S. Wilson in 2010. We prove that this family contains groups of finite lower rank. We also show that many groups in this family are not topologically finitely presentable.
Minimal length factorizations of finite simple groups of Lie type by
unipotent Sylow subgroups
Authors: Garonzi Martino , Levy Dan , Maróti Attila , Simion Iulian I. 
Published: March 2016

Abstract
We prove that every finite simple group G of Lie type satisfies G = U
U
-
U
U
-, where U is a unipotent Sylow subgroup of G and U
-
is its opposite. We also characterize the cases for which G = U
U
-
U. These
results are best possible in terms of the number of conjugates of U in the
above factorizations.
Extraction of geoid heights from shipborne GNSS
measurements along the Weser River in northern
Germany
Authors: Lavrov D. , Even-Tzur G. , Reinking J. 
Published: March 2016

Abstract
In-land geoid models rely on several measuring
techniques. The quality of those models is directly related
to the spatial resolution of the measurement data. Occasionally,
a local geoid model does not cover the coastal
area at all and a local marine geoid simply does not exist.
ShipborneGNSS measurementsmay provide away of overcoming
this problem in coastal areas. However, several
corrections to the raw measurements must be applied in
order to account for systematic effects induced by ship dynamics
and other static and dynamic impacts from tides,
atmospheric pressure or wind stress.
This paper presents the theoretical background for the
method and the results of a case study in the estuary of
the Weser River in Germany. A series of GNSS measurements
were carried out aboard a ship and the approximate
geoid height along the river was derived. For accuracy assessments
of this method, the resultswere compared to the
German Combined QuasiGeoid 2011 (GCG2011). The results
are very promising and indicate the ability to extract geoid
heights from shipborne GNSS measurements.
The language of early Buddhism
Authors: Levman Bryan 
Published: March 2016

AbstractThe earliest recoverable language of Buddhism is a Middle Indo-Aryan (MIA)koine, an inter-dialect language which reduced linguistic variability by dialect levelling and simplification, through elimination of interdialect phonological differences which impede understanding, and harmonization of the different dialects to a common language intelligible across all dialects. Among the principal features of thiskoinethe following can be identified: reduction of the distinction between voiced and unvoiced intervocalic stops; replacement of aspirated stops by aspirates only; replacement of diphthongs by a simple vowel; the assimilation or resolution of most consonant clusters; the merging of dental, retroflex and palatal sibilants; the interchange of a variety of liquids and labials. Among the various factors which led to thekoine’s formation, were other Indo-Aryan and non Indo-Aryan languages andkoinewhose phonetic constraints catalyzed and accelerated the development of MIA in certain directions, that is towards harmonization with their own phonological system which lacked such features as phonemic intervocalic voiced stops, aspirated stops, consonant clusters, etc., and had other features (like retroflexes) which Indo-Aryan lacked.
Tibetan as a “model language” in the Amdo Sprachbund: evidence from Salar and Wutun
Authors: Sandman Erika , Simon Camille 
Published: March 2016

AbstractThis paper outlines Tibetan morphosyntactic features transferred into two genetically unrelated and typologically distinct languages, Salar (Turkic) and Wutun (Sinitic), both spoken in the same linguistic area, the Amdo Sprachbund located in the Upper Yellow River basin in Western China.Part of the research cited in this paper was carried out under the research project “Interactional, Cross-Linguistic, Theoretical and Areal Perspectives on Evidentiality and Egophoricity” funded by the Academy of Finland. Examples not otherwise cited are from the two authors’ fieldwork. We wish to thank all our Salar, Wutun and Amdo Tibetan friends for their patience and helpfulness in helping us to understand their languages. We are also grateful to the organizers and fellow participants of the International Workshop on Linguistic Microareas of South Asia held in Uppsala on May 5–6, 2014, to two anonymous reviewers for their helpful comments, and to Christopher Culver for improving the English language of our paper.Due to long-term linguistic contact with Amdo Tibetan, the culturally dominant language in the region, Salar and Wutun have undergone many parallel convergence processes, and they have developed shared grammatical features not found in their genetic relatives spoken elsewhere. By comparing the grammatical structures transferred from Tibetan into both Salar and Wutun, we aim to identify the most prominent Tibetan grammatical features that tend to be copied into neighboring languages despite their different genetic affiliations and typological profiles. Our study highlights the role of Tibetan as the dominant language of the Sprachbund, serving as a model for linguistic convergence for its neighboring languages.
An evaluation of noise on LPC-based vowel formant estimates: Implications for sociolinguistic data collection
Authors: De Decker Paul 
Published: March 2016

AbstractCurrent trends in sociophonetic data analysis indicate a shift to entirely automatic measurements of spectral properties using programs like Praat. While such practices are useful for the rapid collection of acoustic data from large corpora, they, by default do not permit human analysts to provide quality control or make hand corrected measurements when needed. Under ideal signal-to-noise conditions, such as in a sound-proof room, this may not be a problem. However, analysis of audio recordings made in acoustically-uncontrolled environments, like many standard sociolinguistic interviews, are arguably susceptible to spurious estimates using automated routines. This paper presents the results of a highly controlled noise-interference experiment designed to examine the effects of different types of noise at varying signal-to-noise levels on automated LPC-based vowel formant measurements made in Praat. Findings indicate that some noises are more detrimental than others, affect some formant frequencies more than others and that louder noises make it inappropriate to conduct an analysis of F1 and F2. Results are discussed and suggestions for better practices in recording sociolinguistic interviews for sociophonetic data collection are presented.
Crystal structure of n-butyl-chlorido-bis[N-sec-butyl,N-n-propyl-carbamodithioato κ
2
S,S′]-tin(IV), C20H41ClN2S4Sn
Authors: Abdul Muthalib Amirah Faizah , Baba Ibrahim , Abdul Halim Siti Nadiah , Tiekink Edward R. T. 
Published: March 2016

Abstract
C20H41ClN2S4Sn, triclinic, P1̅ (no. 2), a = 10.0750(3) Å, b = 10.7593(7) Å, c = 13.3097(6) Å, α = 74.619(5)°, β = 86.861(3)°, γ = 88.582(4)°, V = 1388.93(12) Å3, Z = 2, R
gt
(F) = 0.044, wR
ref
(F
2
) = 0.106, T = 100 K.
Crystal structure of diaquabis(phenoxyacetato-κ2
O,O′)-zinc(II), C16H18O8Zn
Authors: Xiao Wei , Yuan Hou-Qun , Li Yan-Xia , Hu Chun-Yan , Bao Guang-Ming 
Published: March 2016

Abstract
C16H18O8Zn, Monoclinic, C2, a = 11.612(2) Å, b = 5.2119(11) Å, c = 13.762(3) Å, β = 101.151(3)°, V = 817.2(3) Å3, Z = 2, R
gt
(F) = 0.0248, wR
ref
(F
2
) = 0.0790, T = 296(2) K.
Crystal structure of poly-[μ
2-4,4′-bipyridine-κ
2
N:N′−μ
3-thiophene-2,3-di-carboxylato-κ
4
O,O′, O′′:O′′′ -cadmium(II)]
Authors: Yao Li-Ping , Zhang Li 
Published: March 2016

Abstract
C16H10N2O4S1Cd, orthorhombic, P2(1)2(1)2(1), a = 8.977(2) Å, b = 11.751(3) Å, c = 14.224(4) Å, α = 90°, β = 90°, γ = 90°, V = 1500.6(6) Å3, Z = 4, R
gt
(F) = 0.0188, wR
ref
(F
2
) = 0.0431, T = 296(2) K.
Crystal structure of (2,5-dihydroxyphenyl)-(4-hydroxy-3,5-dimethoxyphenyl)methanone, C15H14O6
Authors: Benites Julio , Valderrama Jaime A. , Ríos David , Cárdenas Alejandro , Brito Iván 
Published: March 2016

Abstract
C15H14O6, triclinic, P1̅ (no. 2), a = 8.2996(5) Å, b = 8.3739(4) Å, c = 10.7565(5) Å, α = 94.942(3)°, β = 112.199(4)°, γ = 102.752(4)°, V = 663.09(6) Å3, Z = 2, R
gt
(F) = 0.044, wR
ref
(F
2
) = 0.1134, T = 299 K.
Crystal structure of tris(3-(2-pyridyl)pyrazole)zinc(II)tetrachlorido zincate(II), C24H21Cl4N9Zn2
Authors: Zhu Guang-Zhou , Li Chun-Ling , Wang Ao-Lan , Wang Shi-Yu , Zou Dan-Ling , Zhang Xiao-Jing , Yang Feng-Lei 
Published: March 2016

Abstract
C24H21Cl4N9Zn2, trigonal, R3̅c (no. 161), a = 13.3310(13) Å, b = 13.3310(13) Å, c = 58.070(9) Å, V = 8937.3(19) Å3 , Z = 12, R
gt
(F) = 0.0409, wR
ref
(F
2
) = 0.1491, S = 1.006, T = 296(2) K.
Crystal structure of (Z)-4-(furan-2-yl(p-tolylamino)methylene)-3-methyl-1-p-tolyl-1H-pyrazol-5(4H)-one, C23H21N3O2
Authors: Zhang Bao-Qi , Zhang Lin , Zhang Heng-Qiang , Zhao Cheng-Liang , Chen Bin 
Published: March 2016

Abstract
C23H21N3O2, triclinic, P1̅ (no. 2), a = 10.305(3) Å, b = 10.4528(16) Å, c = 10.6351(17) Å, b = 101.139(4)°, V = 983.4(4) Å3, Z = 2, R
gt
(F) = 0.0559, wR
ref
(F2) = 0.1607, T = 295(2) K.
Crystal structure of methyl 5-methoxy 1H-indole-2-carboxylate, C11H11NO3
Authors: Attia Mohamed I. , Ghabbour Hazem A. , Fun Hoong-Kun 
Published: March 2016

Abstract
C11H11NO3, monoclinic, P21/n (no. 14), a = 7.8956(6) Å, b = 5.8304(4) Å, c = 22.0407(16) Å, β = 91.919(3)°, V = 1014.06(13) Å3, Z = 4, R(F) = 0.045, wR(F
2
) = 0.125, T = 100 K.