bluuebunny/crossref_metadata_2025_split huggingface dataset:
Regularity of symbolic powers and arboricity of matroids
Authors: Minh Nguyên Công , Trung Trân Nam 
Published: October 2018

Abstract
Let Δ be a matroid complex. In this paper, we explicitly compute the regularity of all the symbolic powers of its Stanley–Reisner ideal in terms of combinatorial data of Δ. In order to do that, we provide a sharp bound between the arboricity of Δ and the circumference of its dual

Δ
*

{\Delta^{*}}

.
On some problems concerning symmetrization operators
Authors: Saroglou Christos 
Published: October 2018

Abstract
In [G. Bianchi, R. J. Gardner and P. Gronchi, Symmetrization in geometry, Adv. Math. 306 2017, 51–88], a systematic study of symmetrization operators on convex sets and their properties is conducted. In the end of their article, the authors pose several open questions. The primary goal of this manuscript is to study these questions.
K-invariant cusp forms for reductive symmetric spaces of split rank one
Authors: van den Ban Erik P. , Kuit Job J. , Schlichtkrull Henrik 
Published: October 2018

Abstract
Let

G
/
H

{G/H}

be a reductive symmetric space of split rank one and let K be a maximal compact subgroup of G. In a previous article the first two authors introduced a notion of cusp forms for

G
/
H

{G/H}

. We show that the space of cusp forms coincides with the closure of the space of K-finite generalized matrix coefficients of discrete series representations if and only if there exist no K-spherical discrete series representations. Moreover, we prove that every K-spherical discrete series representation occurs with multiplicity one in the Plancherel decomposition of

G
/
H

{G/H}

.
Groups whose word problems are not semilinear
Authors: Gilman Robert H. , Kropholler Robert P. , Schleimer Saul 
Published: October 2018

AbstractSuppose that G is a finitely generated group and {\operatorname{WP}(G)} is the formal language of words defining the identity in G.
We prove that if G is a virtually nilpotent group that is not virtually abelian, the fundamental group of a finite volume hyperbolic three-manifold, or a right-angled Artin group whose graph lies in a certain infinite class, then {\operatorname{WP}(G)} is not a multiple context-free language.
Non-recombining trinomial tree pricing model and calibration for the volatility smile
Authors: Gong Wenxiu , Xu Zuoliang 
Published: October 2018

Abstract
In this paper, we consider the non-recombining trinomial tree pricing model under the volatility, which is a function of time, establish the option pricing model and give the convergence rates of the non-recombining trinomial tree method. In addition, we research the calibration problem of volatility and adopt an exterior penalty method to transform this problem into a nonlinear unconstrained optimization problem. For the optimization problem, we use the quasi-Newton algorithm. Finally, we test our model by numerical examples and options data on the S&P 500 index. The results show the effectiveness of the non-recombining trinomial tree pricing model.
HELLP syndrome complicated by pulmonary edema: a case report
Authors: Mai Caiyuan , Wang Bin , Chen Rong , Duan Dongmei , Lv Lijuan , Lei Qiong , Lin Xiaohong , Wen Jiying , Niu Jianmin 
Published: October 2018

Abstract
HELLP syndrome is a combination of symptoms described as hemolysis, elevated liver enzymes and low platelets. HELLP is a common life-threatening complication of pregnancy thought to be a variant or complication of preeclampsia. In this case report, we aimed to present a woman with acute postpartum HELLP syndrome complicated by pulmonary edema after caesarean section following severe preeclampsia. Our experience suggests that early detection of HELLP syndrome and timely management will bring good outcomes.
Stretchable and self-healable organometal halide perovskite nanocrystal-embedded polymer gels with enhanced luminescence stability
Authors: Fang Minjie , Huang Sihui , Li Dong , Jiang Chunli , Tian Pei , Lin Hechun , Luo Chunhua , Yu Wenlei , Peng Hui 
Published: October 2018

Abstract
Stretchable and self-healing polymer gels with luminescent property are very promising materials for next generation soft optical devices. This work presents the preparation of self-healing and luminescent polymer gels by simply blending organometal halide perovskite nanocrystals (OHP NCs) with poly(dimethylsiloxane)-urea copolymer (PDMS-urea). On the one hand, the obtained luminescent gels are not only flexible, stretchable and relatively transparent, they also exhibit excellent self-healing capability due to the reversible hydrogen bonding network in the PDMS-urea copolymer. On the other hand, the embedding of OHP NCs (MAPbBr3 and MAPbI3 NCs) inside the hydrophobic PDMS-urea gel greatly improved the photoluminescence stability of OHP NCs against water. Their applications as phosphors for LEDs have been demonstrated. Both the MAPbBr3/PDMS-urea gel and MAPbI3/PDMS-urea gel can fully convert the blue emission of GaN chip to green and red emissions, respectively. These gels can be used as photoluminescent materials in flexible optical devices with good self-healing capability.
Synthesis of few-layer 2H-MoSe2 thin films with wafer-level homogeneity for high-performance photodetector
Authors: Dai Tian-Jun , Liu Yu-Chen , Fan Xu-Dong , Liu Xing-Zhao , Xie Dan , Li Yan-Rong 
Published: October 2018

Abstract
The unique structural and physical properties of two-dimensional (2D) atomic layer semiconductors render them promising candidates for electronic or optoelectronic devices. However, the lack of efficient and stable approaches to synthesize large-area thin films with excellent uniformity hinders their realistic applications. In this work, we reported a method involving atomic layer deposition and a chemical vapor deposition chamber to produce few-layer 2H-MoSe2 thin films with wafer-level uniformity. The reduction of MoO3 was found indispensable for the successful synthesis of MoSe2 films due to the low vaporization temperature. Moreover, a metal-semiconductor-metal photodetector (PD) was fabricated and investigated systematically. We extracted an ultrahigh photoresponsivity approaching 101 A/W with concomitantly high external quantum efficiency up to 19,668% due to the produced gain arising from the holes trapped at the metal/MoSe2 interface, the band tail state contribution, and the photogating effect. A fast response time of 22 ms was observed and attributed to effective nonequilibrium carrier recombination. Additionally, the ultrahigh photoresponsivity and low dark current that originated from Schottky barrier resulted in a record-high specific detectivity of up to 2×1013 Jones for 2D MoSe2/MoS2 PDs. Our findings revealed a pathway for the development of high-performance PDs based on 2D MoSe2 that are inexpensive, large area, and suitable for mass production and contribute to a deep understanding of the photoconductivity mechanisms in atomically thin MoSe2. We anticipate that these results are generalizable to other layer semiconductors as well.
Crystal structure of ethanol-bis(N-((5-(ethoxycarbonyl)-3,4-dimethyl-1H-pyrrol-2-yl)methylene)benzohydrazonato-κ
2
N,O)copper(II), C36H42N6O7Cu
Authors: Xue Wen-Zhao , Hu Qiang , Song Yu-Fei , Wu Wei-Na 
Published: October 2018

Abstract
C20H29N3O5, triclinic, P1̄ (no. 2), a = 8.482(6) Å, b = 15.272(12) Å, c = 15.285(12) Å, a = 112.024(11)°, β = 95.325(9)°, γ = 98.958(9)°, V = 1788(2) Å3, Z = 2, R
gt(F) = 0.0570, wR
ref(F
2) = 0.1687, T = 296(2) K.
Integrated Marketing Communication as a Business Management Tool in the Context of Sustainable Development
Authors: Šķiltere Daina , Bormane Santa 
Published: October 2018

AbstractThe problem of nowadays is that consumers lack information on food products, their composition and quality, nutritional value, packaging, its impact on the human health and environment, reuse and recycling possibilities, etc. Integrated marketing communications (IMC) as a business management tool may not only draw the consumers’ attention and incite a purchase, but also provide information and serve as a facilitator of consumers’ knowledge and competence on products, their nutritional value, use and utilisation. The goal of the research is to assess the impact of IMC for sustainability upon demand at Latvian food retail chains and the impact of the use of IMC for sustainability upon sustainable development. The object of the research is Latvian food retail chains, and the subject of the research is the use of IMC for sustainable development. The authors in 2017 surveyed leading specialists from food retail chains. The research confirmed the hypothesis that IMC for sustainability as an innovative business management tool fosters sustainable development. Based on the results of the research, the authors have drawn up a conceptual model of IMC for sustainable business development, and the results of the research are of both theoretical and practical value.
Numerical analysis on the dynamic response of a plate-and-frame membrane humidifier for PEMFC vehicles under various operating conditions
Authors: Yun Sungho , Cha Dowon , Song Kang Sub , Hong Seong Ho , Lee Sang Hun , Yang Wonseok , Kim Yongchan 
Published: October 2018

Abstract
PEMFC needs to be maintained at an appropriate temperature and humidity in a rapidly changing environment for automobile applications. In this study, a pseudo-multi-dimensional dynamic model for predicting the heat and mass transfer performance of a plate-and-frame membrane humidifier for PEMFC vehicles is developed. Based on the developed model, the variations in the temperature and relative humidity at the dry air outlet are investigated according to the air flow acceleration. Moreover, the dynamic response is analyzed as a function of the amplitude and period of the sinusoidal air flow rate at actual operating conditions. The effects of heat transfer on the dynamic response are more dominant than those of mass transfer. The settling time of the temperature and relative humidity at the dry air outlet decrease with the increase in air flow acceleration. In addition, the variations in the temperature and relative humidity at the dry air outlet increase with the increases in the amplitude and period of the sinusoidal air flow rate.
Synchronität der Büromarktzyklen? Dynamiken europäischer Metropolen im Kontext der Finanz- und Wirtschaftskrise
Authors: Musil Robert , Reiner Christian 
Published: October 2018

Zusammenfassung
Urbane Büro-Immobilienmärkte sind durch eine zunehmende Internationalisierung gekennzeichnet und werden von Investoren als Anlagemöglichkeit zur Diversifikation ihrer Portfolios genutzt. Angesichts dieser Entwicklung wird in der Literatur die zunehmende Synchronisation der Büro-Immobilienmärkte diskutiert. Vor diesem Hintergrund untersucht der Artikel, ob auch die europäischen Büro-Immobilienmärkte durch eine Synchronisation der Zyklen gekennzeichnet sind. Darüber hinaus wird gefragt, in wie weit Büro-Immobilienmärkte mit nationalen Konjunkturzyklen zusammenhängen und ob es zu einer Konvergenz der Büro-Spitzenrenditen zwischen den europäischen Hauptstädten kommt. Auf Basis von empirischen Untersuchungen mittels parametrischer und nicht-parametrischer Korrelationsanalysen und Konvergenzanalysen kann für Europa eine – wenn auch sehr ungleiche – Tendenz zur Synchronisation festgestellt werden. Weiters zeigt sich, dass der Zusammenhang der Zyklen mit anderen Büromärkten aus dem gleichen Land deutlich höher ist, als der durchschnittliche Zusammenhang mit jenen aus anderen Ländern. Die Büromärkte folgen im Wesentlichen dem Muster der monetären europäischen Integration: Einer Konvergenz der Spitzenrenditen in der Frühphase der Euroeinführung folgt eine markante Divergenz beginnend mit der Wirtschaftskrise im Jahr 2008/2009.
Fatigue Behavior of Roller-Compacted Concrete Pavement Based on Full-Scale Fatigue Test
Authors: Park Jun Young , Lee Seung Woo , Han Seung Hwan , Kim Young Kyu 
Published: October 2018

Abstract
Roller-Compacted Concrete (RCC) has been used widely for construction of pavements. The strength of RCC Pavement (RCCP) can be obtained from not only hydration of binder but also the aggregate interlock resulting from roller compaction. For this reason, RCCP normally achieves strengths greater than conventional concrete pavement with similar cement content. Even though RCCP can provide good structural performance, it has been difficult to verify its long-term performance through actual field construction. Therefore, this study evaluated the fatigue behavior using 1 by 1-m dimensional RCC slab specimens obtained in the field in order to take into consideration field variability. A set of numerical analyses indicated that the failure modes of the specimens for a given loading condition appeared to be four-directional bottom-up cracks. A fatigue equation was developed based on the relationship between the stress level and the number of load repetitions.
Dynamic Compressive Behavior of Asphalt Concrete Material under Impact Load
Authors: Wu Jun , Liu Xuemei , Wu Hao , Li Liang , Liu Zhongxian 
Published: October 2018

Abstract
In this article, the dynamic compressive behavior of asphalt concrete was investigated through the servo-hydraulic compressive test and Split Hopkinson Pressure Bar (SHPB) test. At a given temperature, asphalt concrete deformed slowly and permanently under quasi-static to low strain rate loading. Under higher strain rates loading, it suffered fracture. The failure plane of the asphalt concrete under low strain rates loading occurred at binder, while under high strain rates loading along the binder and aggregates. It was also found that the first branch of Dynamic Increase Factor (DIF) curve performed a smooth increase in strength, while the second branch increased sharply at the strain rate of 100 s−1. The suitability of the input DIF curve for numerical simulation was also discussed. A numerical model of asphalt concrete subjected to the SHPB test was developed and validated. It suggests the obtained compressive DIFs of asphalt concrete should be modified to avoid the duplication of the inertial effects. The modified DIF curve for current asphalt concrete material was also given. This research will be of direct importance to both practitioners and researchers involved with pavement design.
Study on the Effect of Side Resistance of Micropiles
Authors: Qiu Shumao , Bai Mingzhou , Yu Ning , Shi Hai , Li Pengxiang 
Published: October 2018

Abstract
The influence of a single pile on its vertical uplift is tested, and a numerical calculation is conducted through a graded loading method. This study is aimed at investigating the influence of the pile side resistance on soil mass and analyzing the influence of the sensitivity of the soil and pile parameters to lateral resistance. Results show that the influence of the lateral resistance of the pile to the soil in forming silt clay is the first linear attenuation with horizontal distance trend. On the basis of the experiment, the concept of effect radius is presented. The change in pile body and soil parameters is beneficial to increasing the effect radius, thereby increasing the resistance of the pile side and influencing the mobilization range of the micropiles to the surrounding soil. Poisson’s ratio is the most sensitive to the change in the effect radius, followed by the change in the length of the pile. The sensitivity of the remaining parameters to the effect radius is from large to small.
CTCF Governs the Identity and Migration of MGE-Derived Cortical Interneurons
Authors: Elbert Adrienne , Vogt Daniel , Watson Ashley , Levy Michael , Jiang Yan , Brûlé Emilie , Rowland Megan E. , Rubenstein John , Bérubé Nathalie G. 
Published: October 2018

The CCCTC-binding factor (CTCF) is a central regulator of chromatin topology recently linked to neurodevelopmental disorders such as intellectual disability, autism, and schizophrenia. The aim of this study was to identify novel roles of CTCF in the developing mouse brain. We provide evidence that CTCF is required for the expression of the LIM homeodomain factor LHX6 involved in fate determination of cortical interneurons (CINs) that originate in the medial ganglionic eminence (MGE). ConditionalCtcfablation in the MGE of mice of either sex leads to delayed tangential migration, abnormal distribution of CIN in the neocortex, a marked reduction of CINs expressing parvalbumin and somatostatin (Sst), and an increased number of MGE-derived cells expressingLhx8and other markers of basal forebrain projection neurons. Likewise,Ctcf-null MGE cells transplanted into the cortex of wild-type hosts generate fewer Sst-expressing CINs and exhibit lamination defects that are efficiently rescued upon reexpression of LHX6. Collectively, these data indicate that CTCF regulates the dichotomy betweenLhx6andLhx8to achieve correct specification and migration of MGE-derived CINs.SIGNIFICANCE STATEMENTThis work provides evidence that CCCTC-binding factor (CTCF) controls an early fate decision point in the generation of cortical interneurons mediated at least in part by Lhx6. Importantly, the abnormalities described could reflect early molecular and cellular events that contribute to human neurological disorders previously linked to CTCF, including schizophrenia, autism, and intellectual disability.
The Yeast DNA Damage Checkpoint Kinase Rad53 Targets the Exoribonuclease, Xrn1
Authors: Lao Jessica P , Ulrich Katie M , Johnson Jeffrey R , Newton Billy W , Vashisht Ajay A , Wohlschlegel James A , Krogan Nevan J , Toczyski David P 
Published: October 2018

AbstractThe highly conserved DNA damage response (DDR) pathway monitors the genomic integrity of the cell and protects against genotoxic stresses. The apical kinases, Mec1 and Tel1 (ATR and ATM in human, respectively), initiate the DNA damage signaling cascade through the effector kinases, Rad53 and Chk1, to regulate a variety of cellular processes including cell cycle progression, DNA damage repair, chromatin remodeling, and transcription. The DDR also regulates other cellular pathways, but direct substrates and mechanisms are still lacking. Using a mass spectrometry-based phosphoproteomic screen in Saccharomyces cerevisiae, we identified novel targets of Rad53, many of which are proteins that are involved in RNA metabolism. Of the 33 novel substrates identified, we verified that 12 are directly phosphorylated by Rad53 in vitro: Xrn1, Gcd11, Rps7b, Ded1, Cho2, Pus1, Hst1, Srv2, Set3, Snu23, Alb1, and Scp160. We further characterized Xrn1, a highly conserved 5′ exoribonuclease that functions in RNA degradation and the most enriched in our phosphoproteomics screen. Phosphorylation of Xrn1 by Rad53 does not appear to affect Xrn1’s intrinsic nuclease activity in vitro, but may affect its activity or specificity in vivo.
Mejoramiento del rendimiento y precocidad del frijol (Phaseolus vulgaris L.)
Authors: Rodríguez Rafael , Orellana Carlos 
Published: October 2018

Because of the complexity that yield components have, and the advantages that early varieties have for farmers considering actual yield components, genotype evaluation was initiated in 1985 to Identify early maturity types. At the same time, high yielding varieties were evaluated that were not necessarily early. The bulk selection method was used to advance to the F6 generation. Twenty rive populations from crosses among 10 parents with diverse maturities were evaluated. At F6, 458 individual .selections were made considering yield per plant, early maturity and visual characteristics. At F7 aprogeny test was made to evaluate F6 effectiveness Grain yields were reduced which is in part explained by the management given to the individual F6 selections compared to F7. Regarding early maturity, various were found with acceptable grain yields which are not common amongst early maturity varieties in the southeastern region of Guatemala (above 1-5 Mg/ha).
Digestibilidad de raciones altas en fibra por el cerdo criollo
Authors: Jarquín R. , Bressani R. 
Published: October 2018

A basal mixture containing 35% soybean meal, 64.6% corn and 0.4 % methionine was used to formulate isocaloric and isoproteic diets for initiation, growth and finishing periods of development of native pigs, containing 16, 12 and 10% protein to be fed at8, 16 and 26 weeksof age, respectively. Lathyrus-used as the fiber source- was kept constant in the rations at levels of 16.4 and 32.8% for the three periods studied, reducing the content of the basal mixture in the diets on the basis of the protein contributed by the source of fiber added, and adding starch to maintain protein level constant. Information is presented on the digestibility of the nutrients of the diets for native pigs of 8 weeks of age on diets containing Ipomoea. Digestibility of cellular content decreased with fiber increment, although it improved at 26 weeks of age. Digestibility of acid detergent fiber, lignin and energy improved with age; nevertheless, they decreased between diets. Cellulose digestibility showed statistical differences among diets. Protein digestibility decreased with respect to fiber content, however, no significant differences were detected between age of animals and diets. Digestibility values between Lathyrus show significant differences in acid detergent fiber, lignin and cellulose in favor of Ipomoea.
Efecto de la escarificación química en la calidad de semilla de Centrosema spp. durante el almacenamiento
Authors: Búrbano Edgar A. 
Published: October 2018

One of the most important forage legumes for acid and unfertile tropical soils is Centrosema spp. This genus is characterized by extremely hard seeds. Even with optimum conditions, because of its hard seeds, much does not germinate naturally. With this in mind, three species were selected, C. acutifolium, C. macrocarpum and C. brasilianum to evaluate the effect of chemical scarification on germination and emergence. Also, germination and emergence for these three entries were evaluated after having been stored for nineteen months at 18°C and 50 % relative humidity. Seed counts with and without scarification and the associated interaction with the defined treatments. The results indicated germination was lowered more with Centrosema acutifolium than the others when the described treatments were assessed (germination lowered by 40% after five months of storage). The other two species have harder seed which reflects the limited loss In germination observed (maximum of 10%). The emergence results from field trials were substantially different from germination data obtained in the laboratory (approximately 50%). These results indicate that seed stored under the two treatments for forage species such as Centrosema spp. Did not improve hardening significantly. The controlled conditions favored physiological qualities (germination) while maintaining hardness which was the case for C. macrocarpum. AWN scarified seed should not be stored under non controlled conditions as was noted for C. acutifolium which lost hardness rapidly and lacks defense mechanisms to avoid deterioration while stored. If scarification is employed a few days prior to seeding, adequate storage conditions should be employed.