bluuebunny/crossref_metadata_2025_split huggingface dataset:
Isolate-specific resistance to the algicidal bacterium Kordia algicida in the diatom Chaetoceros genus
Authors: Meyer Nils , Pohnert Georg 
Published: August 2019

Abstract
Algicidal bacteria can lyse phytoplankton cells, thereby contributing to algal bloom dynamics in the oceans. The target specificity of these bacteria determines their ecological impact. While species specificity of algicidal bacteria is documented, little is known about intra-species variability of their activity against phytoplankton. We describe variability in the Chaetoceros genus (Bacillariophyceae) to resist the lytic activity of the algicidal Flavobacterium Kordia algicida. This variability is evident between different Chaetoceros species, but even intra-specific variability of resistance is observed within one phytoplankton sample. This proves an ecological role of the individuality of diatom cells within a bloom.
Phylogeny of new marine Dothideomycetes and Sordariomycetes from mangroves and deep-sea sediments
Authors: Jones E. B. Gareth , Devadatha Bandarupalli , Abdel-Wahab Mohamed A. , Dayarathne Monika C. , Zhang Sheng-Nan , Hyde Kevin D. , Liu Jian-Kui (Jack) , Bahkali Ali H. , Sarma Vemuri V. , Tibell Sanja , Tibell Leif , Wang Meng-Meng , Liu Fang , Cai Lei 
Published: August 2019

Abstract
This paper documents six new saprobic marine fungi and one new genus based on morphology and multi-gene phylogenies. Three Dothideomycetes, and members of the Pleosporales, are introduced: Pseudomassariosphaeria triseptata sp. nov. was recognized as a mangrove species in Amniculicolaceae, and Salsuginea phoenicis sp. nov. was discovered as a second member of Salsugineaceae. A new genus Raghukumaria with Raghukumaria keshaphalae sp. nov., recovered from mangroves, is phylogenetically sister to Halomassarina and nests in the Trematosphaeriaceae. Three new species are referred to the Sordariomycetes: Coniochaeta marina (Coniochaetales, Coniochaetaceae) on driftwood; Fusicolla bharatavarshae (Hypocreales, Nectriaceae) is introduced with asexual and sexual morphs, on decayed mangrove wood of Avicennia marina; and Fusarium sedimenticola (Hypocreales, Nectriaceae) is new to the Fusarium solani species complex (FSSC) from deep-sea sediment.
Diagnostic accuracy of fine needle aspiration cytology of thyroid nodules
Authors: Erkinuresin Taskin , Demirci Hakan 
Published: August 2019

Abstract

Background
Routine application of fine needle aspiration cytology (FNAC) has decreased unnecessary referral of thyroid nodules for surgical treatment and has also increased the cancer rates found in surgery materials. Success of thyroid FNAC depends on skilled aspiration, skilled cytological interpretation and rational analysis of cytological and clinical data. The aim of this study was to determine the diagnostic accuracy rates of thyroid FNAC results obtained in our institution.

Methods
The data from FNAC and thyroidectomy reports of patients presenting with goiter and who had been evaluated from 1st January 2014 to 1st March 2018 were used. There were 149 patients in total who had undergone thyroidectomy following FNAC. The Bethesda System for Reporting Thyroid Cytology was used in all cytological diagnoses.

Results
The sensitivity of thyroid FNAC for malignant cases was 57.89%, specificity was 88.10%, false-positive rate was 11.90%, false-negative rate was 42.11%, positive predictive value was 52.38%, negative predictive value was 90.24% and accuracy rate was 82.52%. “Focus number” variable was detected as the factor that affected the accurate prediction of FNAC and thyroidectomy results by the pathologist.

Conclusions
This study showed that there was a moderate conformity between thyroid FNAC and thyroidectomy cyto-histopathological diagnosis in malignant cases. As two or more nodules have a negative effect on the physician’s diagnosis of malignant nodules, we think that a more sensitive approach is needed in the determination of these cases. Sampling defects may affect this non-matching.
Bivariate Dynamic Weighted Survival Entropy of Order 𝛼
Authors: Nair Rohini S. , Abdul Sathar E. I. 
Published: August 2019

Abstract
Recently,
G. Rajesh, E. I. Abdul-Sathar and S. Nair Rohini
[G. Rajesh, E. I. Abdul-Sathar and S. Nair Rohini, On dynamic weighted survival entropy of order α,
Comm. Statist. Theory Methods 46 2017, 5, 2139–2150]
proposed a measure of uncertainty based on the survival function called weighted survival entropy of order α.
They have also introduced the dynamic form of a measure called dynamic weighted survival entropy of order α and studied various properties in the context of reliability modeling.
In this paper, we extend these measures into the bivariate setup and study its properties.
We also look into the problem of extending the same measure for conditionally specified models.
Empirical and non-parametric estimators are suggested for the proposed measure using the conditionally specified model, and the effect of the proposed estimators is illustrated using simulated and real data sets.
Exceptional sets for sums of almost equal prime cubes
Authors: Wang Mengdi 
Published: August 2019

Abstract
In this paper, we continue to investigate the exceptional sets for sums of five and six almost equal cubes of primes.
We would also like to establish that almost all natural numbers n, subjected to certain congruence conditions, can be written as

n
=

p
1
3

+
⋯
+

p
s
3

{n=p_{1}^{3}+\cdots+p_{s}^{3}}

(

s
=

5
,
6

{s=5,6}

) with

|

p
j

-

(

n
/
s

)

1
/
3

|

≤

n

θ
s

/
3

+
ε

{|p_{j}-(n/s)^{1/3}|\leq n^{\theta_{s}/3+\varepsilon}}

(

1
≤
j
≤
s

{1\leq j\leq s}

), where

θ
s

{\theta_{s}}

is as small as possible.
The main result of this paper is to improve

θ
6

=

5
/
6

+
ε

{\theta_{6}=5/6+\varepsilon}

, which is proven in [M. Wang, Exceptional sets for sums of five and six almost equal prime cubes, Acta Math. Hungar. 156 2018, 2, 424–434], to

θ
6

=

9
/
11

+
ε

{\theta_{6}=9/11+\varepsilon}

, as well as prove

θ
5

=

8
/
9

+
ε

{\theta_{5}=8/9+\varepsilon}

in another way.
On convergence of sequences of functions possessing closed graphs
Authors: Natkaniec Tomasz , Sieg Waldemar 
Published: August 2019

Abstract
In the first part of the paper we study the sets of boundedness and of convergence and divergence to infinity of
sequences of real closed-graph functions. Generalization on ideal convergence of such
sequences is discussed. Limits and ideal-limits of sequences of functions with closed graphs are considered in the last part of the article.
Existence of special rainbow triangles in weak geometries
Authors: Pambuccian Victor 
Published: August 2019

Abstract
We show that, in any ordered plane with a symmetric orthogonality relation which allows for a meaningful definition of acute and obtuse angles, in which all points are colored with three colors, such that each color is used at least once, there must exist both an acute triangle whose vertices have all three colors and an obtuse triangle with the same property.
We also show that, in both a geometry endowed with an orthogonality relation, in which there is a reflection in every line, in which all right angles are bisectable, which satisfies Bachmann’s Lotschnittaxiom (the perpendiculars raised on the sides of a right angle intersect), and in plane absolute geometry, in which all points are colored with three colors, such that each color is used at least once, there exists a right triangle with all vertices of different colors.
On combinatorial and set-theoretical aspects of some finite and infinite point sets
Authors: Tetunashvili Tengiz 
Published: August 2019

Abstract
In this paper, theorems are stated regarding geometrical realizations of finite families of sets, for a given countable family of sets the
existence of families of point sets combinatorially strictly ω-isomorphic to this given family of sets, independent families of triangles in the Euclidean plane, also, the existence and extensions of ρ-at-sets, ρ-rt-sets, ρ-ot-sets and ot-sets. These theorems are a continuation of the corresponding results of [6, 7, 8, 5, 3, 4].
Microstructure and luminescence of VO2 (B) nanoparticle synthesis by hydrothermal method
Authors: Pham Vuong-Hung , Quan Duong Hong , Manh Nguyen The , Minh Vu Thi Ngoc , Thang Cao Xuan , Tam Phuong Dinh , Thiet Duong Van , Van Hoang Nhu 
Published: August 2019

Abstract
This paper reports the way for the synthesis of nanoplate VO2 (B) particles with controlled morphology. Nanoplate VO2 (B) particle was synthesized by hydrothermal method. Microstructure of VO2 (B) particles were controlled by hydrothermal temperatures and use of Zn doping into VO2 (B) matrix. The microstructure of the particles was shifted from nanowires to nanoplate morphology by changing of hydrothermal temperatures. The doping of Zn into VO2 nanoparticles resulted in an effective achievement of VO2 (B) phase. In addition, luminescence of VO2 (B) nanoparticle was also controlled by the use Zn doping. These results suggest that the potential application of Zn doped VO2 (B) particles for potential application in optical and energy techniques.
Optimization of uranium removal from uranium plant wastewater by response surface methodology (RSM)
Authors: Luo Yongguang , Zhang Weifeng , Li Jing , Zhang Libo , Zou Jingtian , Hu Jinming , Yang Lifeng , Xi Yunhao , Liao Tianqi 
Published: August 2019

Abstract
Uranium plant wastewater was treated in laboratory scale experiments by employing zero valent iron powder. Batch experiments conducted by the response surface methodology (RSM) proved significant decrease in concentrations of uranium due to a decrease in an oxidation-reduction potential and an increase in pH relative to an application of zero valent iron powder. Results indicated that it is effective on the removal of uranium from uranium plant wastewater with the uranium concentration of 2772.23 μg/L due to the adding of zero valent iron powder. it was found that the scope of pH is widely from 3 to 5 from the experimental data obtained in this study. The predicted model obtained from response surface methodology is in accordance with experimental results.
Natural durability of subfossil oak: wood chemical composition changes through the ages
Authors: Baar Jan , Paschová Zuzana , Hofmann Tamás , Kolář Tomáš , Koch Gerald , Saake Bodo , Rademacher Peter 
Published: August 2019

Abstract
In recent years, subfossil oak has become increasingly popular, particularly in the manufacture of small wooden products. Due to the long period of its underground preservation, detailed knowledge of its properties is essential to properly use this material. In this study, subfossil oak samples dated to approximately 1000, 2000 and 3000 years BP and recent oak samples were chemically analyzed to determine the contents of extractives, the main wood components, and inorganic elements. The results were then evaluated in light of their natural durability. The mass loss of subfossil oak was 2–3 times lower than that of the recent sample, but the age of the subfossil oak itself had no influence on its durability. The long-term leaching process of water-soluble ellagitannins, together with their hydrolysis and bonding in ferric tannate complexes, were responsible for the decreased durability. The oldest subfossil oak had the lowest amount of phenolic compounds and the highest content of inorganic elements. Optical emission spectrometry proved an increase in inorganic elements 5–7 times higher than recent oak content, with the highest increase found for calcium and iron. Compared to recent oaks, subfossil oaks manifested decreased content of carbohydrates and correspondingly increased lignin content. Our results revealed that subfossil oak cannot be considered a suitable material for exterior use under aerobic conditions.
Menstrual disorders and medical counseling among schoolgirls in South Egypt: a cross-sectional study
Authors: Arafa Ahmed , Senosy Shaimaa 
Published: August 2019

Abstract

Background
Menstrual disorders are common gynecological problems among adolescents, however, medical counseling for these disorders is not well documented in developing countries.

Objectives
This study aimed to assess medical counseling for menstrual disorders among schoolgirls in Beni-Suef city in South Egypt.

Methods
Using a multi-stage random sampling, a total of 970 preparatory schoolgirls were included in this study. We used a self-administered questionnaire to detect the premenstrual and menstrual disorders as reported by the schoolgirls during the previous 6 months. Medical counseling for the menstrual disorders and other demographic characteristics were also surveyed.

Results
The mean age of the schoolgirls was 15.4 ± 0.8 years, age of menarche 13.2 ± 1.1 years and menstrual flow days 5.0 ± 1.3. During the past 6 months, 19.4% of the schoolgirls reported medical counseling for at least one menstrual symptom. Dysmenorrhea (89.2%), premenstrual fatigue (32.4%) and headache (31.1%) were the most often reported symptoms. After adjustment for personal and gynecological characters, abdominal bloating [odds ratio (OR) 3.66; 95% confidence interval (CI) 2.18–6.17], flow days >4 (OR 1.73; 95% CI 1.21–2.47), acne flare (OR 1.42; 95% CI 1.01–1.99), dysuria (OR 2.09; 95% CI 1.35–3.22) and facial hair (OR 6.89; 95% CI 3.47–13.69) were associated significantly with a higher likelihood of medical counseling.

Conclusion
Menstrual disorders are highly prevalent among preparatory schoolgirls in Beni-Suef, however, there is a noticeable lack of the medical counseling for these disorders. Future research should focus on the barriers to medical counseling for menstrual disorders among adolescents.
Hybrid Approach for Face Recognition from a Single Sample per Person by Combining VLC and GOM
Authors: Ghorbel Ahmed , Aydi Walid , Tajouri Imen , Masmoudi Nouri 
Published: August 2019

Abstract
This paper proposes a new face recognition system based on combining two feature extraction techniques: the Vander Lugt correlator (VLC) and Gabor ordinal measures (GOM). The proposed system relies on the execution speed of VLC and the robustness of GOM. In this system, we applied the Tan and Triggs and retina modeling enhancement techniques, which are well suited for VLC and GOM, respectively. We evaluated our system on the standard FERET probe data sets and on extended YaleB database. The obtained results exhibited better face recognition rates in a shorter execution time compared to the GOM technique.
Wavelet-based simulation of random processes from certain classes with given accuracy and reliability
Authors: Turchyn Ievgen 
Published: August 2019

Abstract
We consider stochastic processes

Y
⁢

(
t
)

{Y(t)}

which can be represented as

Y
⁢

(
t
)

=

(

X
⁢

(
t
)

)

s

{Y(t)=(X(t))^{s}}

,

s
∈
ℕ

{s\in\mathbb{N}}

, where

X
⁢

(
t
)

{X(t)}

is a stationary strictly sub-Gaussian process, and build a wavelet-based model that simulates

Y
⁢

(
t
)

{Y(t)}

with given accuracy and reliability in

L
p

⁢

(

[
0
,
T
]

)

{L_{p}([0,T])}

.
A model for simulation with given accuracy and reliability in

L
p

⁢

(

[
0
,
T
]

)

{L_{p}([0,T])}

is also built for processes

Z
⁢

(
t
)

{Z(t)}

which can be represented as

Z
⁢

(
t
)

=

X
1

⁢

(
t
)

⁢

X
2

⁢

(
t
)

{Z(t)=X_{1}(t)X_{2}(t)}

, where

X
1

⁢

(
t
)

{X_{1}(t)}

and

X
2

⁢

(
t
)

{X_{2}(t)}

are independent stationary strictly sub-Gaussian processes.
Coupling-enhanced dual ITO layer electro-absorption modulator in silicon photonics
Authors: Tahersima Mohammad H. , Ma Zhizhen , Gui Yaliang , Sun Shuai , Wang Hao , Amin Rubab , Dalir Hamed , Chen Ray , Miscuglio Mario , Sorger Volker J. 
Published: August 2019

Abstract
Electro-optic signal modulation provides a key functionality in modern technology and information networks. Photonic integration has not only enabled miniaturizing photonic components, but also provided performance improvements due to co-design addressing both electrical and optical device rules. The millimeter to centimeter footprint of many foundry-ready electro-optic modulators, however, limits density scaling of on-chip photonic systems. To address these limitations, here we experimentally demonstrate a coupling-enhanced electro-absorption modulator by heterogeneously integrating a novel dual-gated indium-tin-oxide phase-shifting tunable absorber placed at a silicon directional coupler region. This concept allows utilizing the normally parasitic Kramers-Kronig relations here in an synergistic way resulting in a strong modulation depth to insertion loss ratio of about 1. Our experimental modulator shows a 2 dB extinction ratio for a just 4 μm short device at 4 V bias. Since no optical resonances are deployed, this device shows spectrally broadband operation as demonstrated here across the entire C-band. In conclusion, we demonstrate a modulator utilizing strong index change from both real and imaginary parts of active material enabling compact and high-performing modulators using semiconductor near-foundry materials.
Habent sua fata professores. Joseph A. Schumpeter an Walter Eucken
Authors: Dathe Uwe , Hedtke Ulrich 
Published: August 2019

Zusammenfassung
In den Werken und in den veröffentlichten Briefen von Joseph A. Schumpeter (1883–1950) und Walter Eucken (1891–1950) finden wir nur wenige Bezüge auf das Werk des jeweils anderen. Es scheint, als ob Eucken und Schumpeter kaum Notiz voneinander nahmen. In seinem späten, postum herausgegebenen Werk „Grundsätze der Wirtschaftspolitik“ kritisiert Eucken Schumpeter scharf. Wir edieren und kommentieren in unserem Beitrag 16 Briefe von Schumpeter aus dem Nachlass von Walter Eucken. Diese Briefe zeigen eine enge wissenschaftliche und persönliche Beziehung zwischen den beiden Ökonomen zwischen 1926 und 1933 und belegen, dass Eucken Ende der 1920er Jahre wichtige Elemente von Schumpeters Entwicklungstheorie aufgriff.
Wettbewerbsrecht und Ökonomie im digitalen 21. Jahrhundert
Authors: Mohr Jochen 
Published: August 2019

ZusammenfassungDas Verhältnis von Wettbewerbsrecht und Ökonomie gibt Anlass zu fortwährender Reflektion. Die Europäische Kommission will das Recht gegen Wettbewerbsbeschränkungen mit demmore economic approachstärker an ökonomischen Einzelfallanalysen ausrichten. Ein zentraler Ausdruck dieser Herangehensweise ist der sog.as efficient competitor test, wonach die Wettbewerbsregeln – vereinfacht gesprochen – nur auf solche Verhaltensweisen angewandt werden sollen, die für die Verbraucher ökonomisch nachweisbar schädlich sind. DieIntel-Entscheidung des Europäischen Gerichtshofs hat verdeutlicht, dass das Erzielen ökonomisch richtiger Einzelfallergebnisse über das Wettbewerbsrecht bereits in einer analogen Wirtschaft an Grenzen stoßen kann. Dies gilt umso mehr in der digitalen Ökonomie des 21. Jahrhunderts, schon weil die entsprechenden Geschäftsmodelle wettbewerbstheoretisch noch nicht voll durchdrungen sind. Auf der Grundlage einer juristisch-wertenden Interpretation des Wettbewerbsrechts sind unternehmerische Verhaltensweisen auch dann unzulässig, wenn sie die berechtigten Freiheitspositionen der Marktteilnehmer und die daraus erwachsenden Wettbewerbsprozesse unangemessen beeinträchtigen, ohne dass im konkreten Fall ein ökonomischer Verbraucherschaden nachgewiesen werden muss. Die praktische Bedeutung einer Ausrichtung der Wettbewerbsregeln an rechtlichen Kriterien zeigt sich am Beispiel desFacebook-Falls des Bundeskartellamts, in dem ein Missbrauch von Marktmacht aufgrund eines Verstoßes gegen grundlegende Prinzipien der Rechtsordnung in Rede steht, namentlich gegen das Allgemeine Persönlichkeitsrecht.
From text to ensemble: A multimodal study of television interpreting with cases from Chinese TV
Authors: Yang Yuhong 
Published: August 2019

Abstract
Television interpreting, although serving the largest population of users, is underexplored compared with conference interpreting or community interpreting by the academic community, not to mention any systematic, in-depth analysis foregrounding or tailored to its salient multimodal features. Drawing on Kress and van Leeuwen’s multimodal social-semiotic theory of communication as well as frameworks established in nonverbal communication and audiovisual translation, this paper moves away from traditional language-based discussions of interpreter-mediated television events and attempts to gain new insights into this essentially multimodal communicative practice through multimodal analysis of data. This paper purports to testify a tentative framework of modal relations of “complementarity”, “dependency”, and “incongruity” which are at work in interpreted television events, with authentic data, amounting to a total length of 5 hours, recorded from live news programmes on Chinese TV. The findings of modal complementarity and dependency clearly point to the essentially multimodal meaning making mechanism involved in the semiotic ensemble that is to be perceived by the audience in a gestalt fashion, which reveals the inadequacy of linguistic approaches to television interpreting.
Identifying and solving scientific problems in the medicine: key to become a competent scientist
Authors: Aydemir Duygu , Ulusu Nuriye Nuray 
Published: August 2019

Abstract
The scientific method can be described as a multistep and detailed process, in which finding the best question is the first and most crucial step. Thus, scientific problem should be examined thoroughly in different ways and perspectives. The amount and diversity of scientific data are enormously increasing and becoming more specific day by day, therefore traditional observational biology is not sufficient on an individual basis to understand and treat multifactorial diseases. Moreover, protocols, documentations, information, outcomes, precisions, and considerations of evidence should be improved to answer scientific questions correctly during the scientific research. Because of the diversity of the data and the methods, statisticians and methodologists should be involved and contribute to the all stages of research. Besides that, all scientific data should be certainly reproducible and repeatable. Scientific knowledge is in a state of flux and becomes more complex day by day. Thus, becoming a competent scientist needs, abilities and skills such as creativity, hardworking and self-discipline that all requires lifelong learning, searching, and widening scientific horizons consistently.