bluuebunny/crossref_metadata_2025_split huggingface dataset:
Harmonic analysis and reduction of the scattered field from electrically large cloaked metallic cylinders
Authors: Cappello Barbara , Matekovits Ladislau 
Published: March 2020

In this paper, an analysis of the spectral composition of the scattered field from coated metallic cylinders is performed, focusing particularly on the cloaking of electrically large structures. An expression of the scattering coefficients is derived, considering both a dielectric and a metasurface coating. Modeling the metasurface as a surface impedance boundary condition, the surface impedance, which annuls one harmonic of the scattered field, is formulated in a closed and compact form. Moreover, in the case of cylinders with radius comparable with the wavelength of interest, it is demonstrated that a reduction of the scattering is possible by using a homogeneous metasurface coating, which presents a positive surface reactance. In particular, a reduction of the scattering width of 4 dB is achieved for a cylinder radius of

a
=
0.917

λ
0

.
Wprowadzenie
Authors: Kwiek Marek 
Published: March 2020

Pismo Nauka i Szkolnictwo Wyższe zmienia swoją formułę. Od kilku lat wyrażamy, również na tych łamach, silne przekonanie o tym, że dyscyplina badań nad szkolnictwem wyższym ma charakter ponadprzeciętnie międzynarodowy. Wielokrotnie pisaliśmy, że krajowy obieg naukowy - w naszym przypadku polski - jest obiegiem drugoplanowym znaczeniu w kontekście przyspieszającej globalizacji nauki. Naturalnym językiem dla tej dyscypliny jest język angielski: tylko w obiegu globalnym odbywają się inspirujące dyskusje naukowe, tylko w tym obiegu funkcjonuje ta dyscyplina w pełnym wymiarze (wyjątkiem mogą być największe systemy europejskie: niemiecki, francuski, hiszpański i włoski, ale tylko do pewnego stopnia).
Answering billion-scale label-constrained reachability queries within microsecond
Authors: Peng You , Zhang Ying , Lin Xuemin , Qin Lu , Zhang Wenjie 
Published: March 2020

In this paper, we study the problem of label-constrained reachability (LCR) query which is fundamental in many applications with directed edge-label graphs. Although the classical reachability query (i.e., reachability query without label constraint) has been extensively studied, LCR query is much more challenging because the number of possible label constraint set is exponential to the size of the labels. We observe that the existing techniques for LCR queries only construct partial index for better scalability, and their worst query time is not guaranteed and could be the same as an online breadth-first search (BFS).
In this paper, we propose novel label-constrained 2-hop indexing techniques with novel pruning rules and order strategies. It is shown that our worst query time could be bounded by the in-out index entry size. With all these techniques, comprehensive experiments show that our proposed methods significantly outperform the state-of-the-art technique in terms of query response time (up to 5 orders of magnitude speedup), index size and index construction time. In particular, our proposed method can answer LCR queries within microsecond over billion-scale graphs in a single machine.
Temporal variations of Halodule wrightii meadows and associated fauna near their southern distribution limit in the southwestern Atlantic
Authors: Sordo Laura , Lana Paulo 
Published: March 2020

AbstractHalodule wrightiimeadows in Southern Brazil have been regressing in an unsheltered area of the subtropical Paranaguá Bay, near their southern limit in the SW Atlantic, since 2006. To identify early indicators of regression events, we assessed variations in plant and macrobenthic structure in two local meadows under unsheltered and protected conditions. Differences between sites increased after an epiphytic overgrowth of the algaHincksia mitchelliaeat the unsheltered site. Seagrass growth was suppressed and the numbers of burrowing and opportunistic benthic species increased with the increase of algal biomass. In the protected meadow, seagrass biomass and number of leaves changed seasonally, but macrobenthic abundance and species richness remained stable. Ecosystem changes were evident when the unsheltered meadow was already collapsing. The number of leaves per shoot, the horizontal internode length, the abundance and structure of the macrofaunal associations, and the host-epiphyte surface interactions, were the first variables to reflect the early stages of seagrass regression. Our results suggest that the persistence ofH. wrightiimeadows at their southern distribution limit in the SW Atlantic will be affected by local hydrodynamics and their ability to compete with ephemeral macroalgal species under stress conditions.
Circulating tumor DNA (ctDNA) is not a good proxy for liquid biopsies of tumor tissues for early detection
Authors: Fiala Clare , Diamandis Eleftherios P. 
Published: March 2020

Abstract
The important conclusion that ctDNA is a mediocre proxy for liquid biopsies of tumor tissues for early detection was reached after new data were published recently in Nature Genetics. These data have shown that most mutations found in ctDNA are not related to tumor tissues but rather to the precancerous condition clonal hematopoiesis. Previously, our group has analyzed the sensitivity of the ctDNA test for early detection of cancer and concluded that the achievable sensitivity, especially for small tumors, is not enough to have clinical value. Now, the new data have shown a serious compromise in specificity. We believe that scientists who are interested in early cancer diagnostics should be aware of the limitations of this test, in both sensitivity and specificity. Our work may prompt further work aiming to alleviate these important issues in the cancer diagnostics field.
Automatic Phenotyping Test of Sunflower Seeds
Authors: Aliiev Elchyn 
Published: March 2020

Abstract
The development of automated precision technologies for the phenotyping test of seeds by a complex of functional features in the selection process of sunflower is relevant and promising. The task of developing a device for the automatic phenotyping test of seeds and the algorithm for finding and isolating seeds based on color information was set. Research was conducted on a stand, which consisted of the following elements: Video Microscope Camera 1080 P 16MP HDMI USB manufactured by Eakins, a set of LEDs of three types (red, green, blue) and a personal computer.
The results of experimental studies of the process of automatic phenotyping test of seeds of different sunflower varieties allowed us to establish an average error of determining the geometric dimensions of sunflower seeds (length L and width B) – 0.06 mm. The histograms of the color distribution of sunflower seeds in the RGB color space with different illumination are established. As a result of the analysis of the obtained histograms of the color distribution of sunflower seeds in the RGB color space it is established that in the case of color homogeneity, the discreteness of the channels with red illumination is most clearly seen.
A device for automatic phenotyping test of seeds has been developed, which preserves the accuracy of individual measurement of the geometric dimensions of sunflower seeds, determining their shape and color, which corresponds to modern measuring tools, and provides low complexity and high technological implementation of the phenotyping test procedure (determination, ascertaining and identification) material, according to its morphological and marker features.
Dictionary learning for transcriptomics data reveals type-specific gene modules in a multi-class setting
Authors: Rams Mona , Conrad Tim 
Published: March 2020

Abstract
Extracting information from large biological datasets is a challenging task, due to the large data size, high-dimensionality, noise, and errors in the data. Gene expression data contains information about which gene products have been formed by a cell, thus representing which genes have been read to activate a particular biological process. Understanding which of these gene products can be related to which processes can for example give insights about how diseases evolve and might give hints about how to fight them.
The Next Generation RNA-sequencing method emerged over a decade ago and is nowadays state-of-the-art in the field of gene expression analyses. However, analyzing these large, complex datasets is still a challenging task. Many of the existing methods do not take into account the underlying structure of the data.
In this paper, we present a new approach for RNA-sequencing data analysis based on dictionary learning. Dictionary learning is a sparsity enforcing method that has widely been used in many fields, such as image processing, pattern classification, signal denoising and more. We show how for RNA-sequencing data, the atoms in the dictionary matrix can be interpreted as modules of genes that either capture patterns specific to different types, or else represent modules that are reused across different scenarios. We evaluate our approach on four large datasets with samples from multiple types. A Gene Ontology term analysis, which is a standard tool indicated to help understanding the functions of genes, shows that the found gene-sets are in agreement with the biological context of the sample types. Further, we find that the sparse representations of samples using the dictionary can be used to identify type-specific differences.
Skunks and gray foxes in a tropical dry region: casual or positive interactions?
Authors: Pérez-Irineo Gabriela , Mandujano Salvador , López-Tello Eva 
Published: March 2020

Abstract
Previous studies have shown that skunks present negative interactions with foxes. However, recently published observations have demonstrated that southern spotted skunk (Spilogale angustifrons) individuals follow gray foxes (Urocyon cinereoargenteus) in the Tehuacán-Cuicatlán Biosphere Reserve (TCBR) in Mexico. In this paper, we reported the same interaction in other locations in the TCBR and evaluated whether this interaction is casual or statistically positive. In this analysis, we included data pertaining to three skunk species (S. angustifrons, Conepatus leuconotus, and Mephitis macroura) and U. cinereoargenteus. We sampled 172 sites using camera traps from 2011 to 2018 for a total effort of 49,764 trap-days. The four studied species were nocturnal; the overlap coefficient between foxes and skunks varied from 0.70 to 0.83. Of the 32 consecutive records between S. angustifrons and U. cinereoargenteus, 11 showed that individuals of this skunk species closely followed U. cinereoargenteus and that these encounters were not random (time interval <1 min). We did not find evidence of a behavioral association of U. cinereoargenteus with C. leuconotus and M. macroura.
Switchable active phase modulation and holography encryption based on hybrid metasurfaces
Authors: Zhou Hongqiang , Wang Yongtian , Li Xiaowei , Wang Qing , Wei Qunshuo , Geng Guangzhou , Huang Lingling 
Published: March 2020

Abstract
Metasurfaces are planar devices containing delicately designed nanoantenna or resonator arrays that allow for beam shaping, super resolution imaging, and holography. Hybrid metasurface – by integrating with tunable materials such as two-dimensional materials and phase change materials (PCMs) – provides a potential platform for active modulation of wavefronts. Specifically, PCMs can flexibly switch between crystalline and amorphous states with nonvolatile property under external stimuli and provide a large refractive permittivity contrast. Using metasurfaces based on PCM to manipulate wavefronts may provide new opportunities for switchable functionalities. Here, we propose two types of metasurface devices based on whole PCM films to realize switchable holography and simultaneous phase and interference encryption. This feature can be used to encrypt information in a switched state and store camouflage information in the other state by simply applying external thermal stimuli to the entire metasurface. This method can be applied in areas such as beam shaping, optical encryption, and anti-counterfeiting.
Palladium selenide as a broadband saturable absorber for ultra-fast photonics
Authors: Zhang Huanian , Ma Pengfei , Zhu Mingxiao , Zhang Wenfei , Wang Guomei , Fu Shenggui 
Published: March 2020

Abstract
Air-stable broadband saturable absorbers (SAs) exhibit a promising application potential, and their preparations are also full of challenges. Palladium selenide (PdSe2), as a novel two-dimensional (2D) layered material, exhibits competitive optical properties including wide tunable bandgap, unique pentagonal atomic structure, excellent air stability, and so on, which are significant in designing air-stable broadband SAs. In our work, theoretical calculation of the electronic band structures and bandgap characteristics of PdSe2 are studied first. Additionally, PdSe2 nanosheets are synthesized and used for designing broadband SAs. Based on the PdSe2 SA, ultrafast mode-locked operations in 1- and 1.5-μm spectral regions are generated successfully. For the mode-locked Er-doped operations, the central wavelength, pulse width, and pulse repetition rate are 1561.77 nm, 323.7 fs, and 20.37 MHz, respectively. Meanwhile, in all normal dispersion regions, mode-locked Yb-doped fiber laser with 767.7-ps pulse width and 15.6-mW maximum average output power is also generated successfully. Our results fully reveal the capacity of PdSe2 as a broadband SA and provide new opportunities for designing air-stable broadband ultra-fast photonic devices.
The nonlinear integro-differential Ito dynamical equation via three modified mathematical methods and its analytical solutions
Authors: Seadawy Aly , Ali Asghar , Aljahdaly Noufe 
Published: March 2020

AbstractIn this work, we construct traveling wave solutions of (1+1) - dimensional Ito integro-differential equation via three analytical modified mathematical methods. We have also compared our achieved results with other different articles. Portrayed of some 2D and 3D figures via Mathematica software demonstrates to understand the physical phenomena of the nonlinear wave model. These methods are powerful mathematical tools for obtaining exact solutions of nonlinear evolution equations and can be also applied to non-integrable equations as well as integrable ones. Hence worked-out results ascertained suggested that employed techniques best to deal NLEEs.
Noun/pronoun asymmetry in Polish: Against the nominal perspective and the DP-hypothesis
Authors: Jurczyk Rafał 
Published: March 2020

AbstractThis paper argues that the Polish noun-pronoun asymmetry in which the intensifiersam‘self’ precedes nouns and follows pronominals is not a simple case of configuration in the DP, whereby pronouns, unlike nominals, target D0for referential reasons (cf. Rutkowski 2002, 2012). Such viewpoints, in the case of Polish, are unfortunate because they appear to underlyingly work on and draw from the syntax of nominal projections characteristic of English or Italian i.e., languages with articles. We show that the asymmetry pertains to various semantic interpretations ofsam, the different semantic specification of nominals and pronominals, and the flexible word order property. What we need, therefore, is a broader clausal perspective coupled with necessary remarks on the abovementioned issues. Thus, rather than employing the DP-hypothesis, we assume two cornerstone phenomena i.e. flexible word order and rich agreement to be crucial here as they facilitate syntactic options like focalisation or topicalisation which manifest discourse information and in whichsamfunctions as a focus or topic particle (cf. Constantinou 2014). These contexts are held typical of the asymmetry, thereby making it an interplay between semantic properties of nominal/pronominal expressions and organisation of discourse information that syntax makes available.
Functions of gender and numeral classifiers in Nepali
Authors: Allassonnière-Tang Marc , Kilarski Marcin 
Published: March 2020

AbstractWe examine the complex nominal classification system in Nepali (Indo-European, Indic), a language spoken at the intersection of the Indo-European and Sino-Tibetan language families, which are usually associated with prototypical examples of grammatical gender and numeral classifiers, respectively. In a typologically rare pattern, Nepali possesses two gender systems based on the human/non-human and masculine/feminine oppositions, in addition to which it has also developed an inventory of at least ten numeral classifiers as a result of contact with neighbouring Sino-Tibetan languages. Based on an analysis of the lexical and discourse functions of the three systems, we show that their functional contribution involves a largely complementary distribution of workload with respect to individual functions as well as the type of categorized nouns and referents. The study thus contributes to the ongoing discussions concerning the typology and functions of nominal classification as well as the effects of long-term language contact on language structure.
A refutation of “a refutation of universal grammar”(Lin, f. 2017. Lingua 193. 1–22.)
Authors: Wu Tong 
Published: March 2020

AbstractLin (2017), according to the author, “offers a refutation of Chomsky’s Universal Grammar (UG) from a novel perspective”. Unfortunately, “novel” does not mean logical or valid. On the contrary, as I will show in this refutation of Lin’s refutation, there is a profound and fundamental misunderstanding in Lin’s interpretation of UG. His refutation only proves his superficial understanding of the questions raised and discussed, which nevertheless are worth discussing and explaining. I take each of Lin’s arguments in turn and attempt to show why they are not well founded, either because of flaws in his argumentation or because of a careful consideration of the available empirical evidence. In the first section I show that Lin’s refutation of UG is illogical in that he confuses UG as a theoretical construct and as a reality entity, which renders his own analysis self-contradictory. The second section aims to examine in detail the so-called novelty of Lin’s refutation, proving that his refutation is unscientific. The third section offers a point-to-point refutation of his arguments presented in the third section of his paper. The fourth section furthermore points out several misunderstandings of previous studies against Chomsky and UG. The last section concludes the paper.
Spielsysteme, Matchpläne, Spielanalysen
Authors: Brümmer Kristina 
Published: March 2020

ZusammenfassungDer Beitrag befasst sich mit Prozessen der Spielplanung und -analyse im gegenwärtigen Profi- und Leistungsfußball. Auf der Basis einer ethnografischen Studie analysiert er, wie in diesen Prozessen die dem Spiel inhärente Unsicherheit einzuhegen und seine Kontingenz zu managen versucht werden, und eruiert dabei die vielfältigen Implikationen des Planens und Analysierens für die (Re-)Organisation der Spielpraxis sowie die Subjektivierung von Trainern und Spielern. Die interessierenden Prozesse werden praxissoziologisch als Praktiken perspektiviert und in ihren ‚natürlichen‘ Kontexten und soziomateriellen Anordnungen in den Blick genommen. Besondere Aufmerksamkeit wird auf den Beitrag verschiedener Artefakte gerichtet, die im Planen und Analysieren als Medien der Hervorbringung eines neuen spielbezogenen Wissens bzw. spezifischer Vorstellungen des Spiels zum Einsatz kommen. Es wird gezeigt, wie Spieler vermittelt über die Medien ‚teamförmig‘ eingestellt werden und ihnen ein ‚theoretisch-analytisches‘ Wissen für ein sicher(er)es Zusammenspiel verfügbar gemacht wird, das in anschließenden Trainingspraktiken auf dem Platz verkörpert und in ihrem praktischen Sinn verankert werden muss.
Two distinct clinical patterns of checkpoint inhibitor-induced thyroid dysfunction
Authors: Olsson-Brown Anna , Lord Rosemary , Sacco Joseph , Wagg Jonathan , Coles Mark , Pirmohamed Munir 
Published: March 2020

Introduction
Immune checkpoint inhibitors can lead to thyroid dysfunction. However, the understanding of the clinical phenotype of ICI-induced thyroid dysfunction in the real-world population is limited. The purpose of this study was to characterise the clinical patterns of dysfunction and evaluate the demographic, biochemical and immunological features associated with this patient cohort.

Materials and methods
To characterise the longitudinal clinical course of thyroid dysfunction in patients from a single, UK regional cancer centre, a retrospective review of patients was conducted. Inclusion criteria included all patients treated with antiPD-1 checkpoint inhibitors (ICI), either as monotherapy (pembrolizumab/nivolumab) or in combination with a CTLA-4 inhibitor (ipilimumab). Patterns of toxicity were evaluated together with assessment of antibody titres.

Results
Over 16 months, thyroid dysfunction was seen in 13/90 and 3/13 patients treated with anti-PD1 monotherapy and in combination with ipilimumab, respectively. Patients either developed hyperthyroidism followed by hypothyroidism (12/16) or de novo hypothyroidism (4/16). Most patients were female (n = 11). All patients required thyroid replacement therapy. There was no relationship between clinical pattern of dysfunction and the presence of thyroid autoantibodies.

Conclusions
There are two distinct patterns of thyroid dysfunction in ICI-treated patients. Patients with thyroiditis develop subsequent hypothyroidism in the vast majority of cases. The potential benefit from steroids or other therapy to manage the hyperthyroid phase remains unclear. Early detection of these patients through appropriate monitoring will improve clinical management and early hormone replacement, reducing the symptomatic burden of hypothyroidism.
A Genome-Wide Association Study To Understand the Effect of Fusarium verticillioides Infection on Seedlings of a Maize Diversity Panel
Authors: Stagnati Lorenzo , Rahjoo Vahid , Samayoa Luis F , Holland James B , Borrelli Virginia M G , Busconi Matteo , Lanubile Alessandra , Marocco Adriano 
Published: March 2020

Abstract
Fusarium verticillioides, which causes ear, kernel and stem rots, has been reported as the most prevalent species on maize worldwide. Kernel infection by F. verticillioides results in reduced seed yield and quality as well as fumonisin contamination, and may affect seedling traits like germination rate, entire plant seedling length and weight. Maize resistance to Fusarium is a quantitative and complex trait controlled by numerous genes with small effects. In the present work, a Genome Wide Association Study (GWAS) of traits related to Fusarium seedling rot was carried out in 230 lines of a maize association population using 226,446 SNP markers. Phenotypes were scored on artificially infected kernels applying the rolled towel assay screening method and three traits related to disease response were measured in inoculated and not-inoculated seedlings: plant seedling length (PL), plant seedling weight (PW) and germination rate (GERM). Overall, GWAS resulted in 42 SNPs significantly associated with the examined traits. Two and eleven SNPs were associated with PL in inoculated and not-inoculated samples, respectively. Additionally, six and one SNPs were associated with PW and GERM traits in not-inoculated kernels, and further nine and thirteen SNPs were associated to the same traits in inoculated kernels. Five genes containing the significant SNPs or physically closed to them were proposed for Fusarium resistance, and 18 out of 25 genes containing or adjacent to significant SNPs identified by GWAS in the current research co-localized within QTL regions previously reported for resistance to Fusarium seed rot, Fusarium ear rot and fumonisin accumulation. Furthermore, linkage disequilibrium analysis revealed an additional gene not directly observed by GWAS analysis. These findings could aid to better understand the complex interaction between maize and F. verticillioides.