bluuebunny/crossref_metadata_2025 huggingface dataset:
Surface energies and electronic properties of intermetallic compound B2-AgMg
Authors: Sun Jing-Bo , Yao Jian-Gang , Meng Jiang , Li Shuping , Jiang Yong , Wang Jigang
Published: March 2019

A new method was used to predict the surface energies of three low-index surfaces for intermetallic compound B2-AgMg. The results show that Ag-terminal and Mg-terminal are the two kinds of surface models for (1 0 0) and (1 1 1) surfaces which are non-stoichiometry. (1 1 0) surface has only one surface terminal, which is stoichiometry, and the smallest surface energy (about [Formula: see text] in three low-index surfaces. The surface energies are related to the chemical potential of Ag and Mg atoms for (1 0 0) and (1 1 1) surfaces, but it is of no concern to this factor for stoichiometry (1 1 0) surface. Analysis of electronic properties is coincident with the calculated surface energies.
Resource Allocation Scheme Based on Rate-Requirement for Device-to-Device Downlink Communications
Authors: Wang Xin , Qian Zhihong , Wang Xue , Huang Lan
Published: March 2019

The rate-requirement of device-to-device (D2D) users is associated with the context information of velocity and data size of users to some extent. In this study, an efficient context-aware resource allocation scheme based on rate requirement (RARR) is proposed. This scheme consists of two allocation phases. In the rate-ensuring resource allocation phase, D2D pairs are allocated a certain amount of spectrum resource according to their rate requirement. In the allocation, the interference restricted area is limited to exclude cellular users that bring a negative capacity gain to the communication system. In the residual resource reallocation phase, surplus resources are assigned to D2D pairs according to the system fairness. Simulation results indicate that the proposed RARR scheme efficiently leads to superior performance in terms of system throughput and fairness and exhibits low complexity relative to traditional resource allocation.
Airfoil Optimization of Land-Yacht Robot Based on Hybrid PSO and GA
Authors: Chen Jiqing , Li Hengyu
Published: March 2019

Airfoil optimization algorithm is studied and a hybrid PSO and GA method is proposed in this paper. After function test, it shows that algorithm is well in convergence performance, fast speed, and optimization capability. Then, the airfoil parametric expression theory is analyzed. A new airfoil is obtained after combining CFD and PSO-GA optimization. The aerodynamic of new airfoil is compared with the airfoil optimized by GA-PSO and basic airfoil NACA0018. The results indicate that new airfoil is better than the other two airfoils in lift coefficient, lift-drag ratio, and surface pressure. At last, wing-sail of new airfoil and NACA0018 wing-sail are designed and manufactured. Both of them are applied in land-yacht robot linear motion and steering motion experiment. For the linear motion, in the situation of wind speed being 15[Formula: see text]m/s and angle of attack being 5, running speed of robot with optimized new wing-sail is 1.853[Formula: see text]m/s. In steering motion, trajectory with new wing-sail is closer to the real situation and it gets more thrust. The experiments data verify that the simulation results are correct and PSO-GA algorithm is effective.
Implementation of a Fuzzy Logic Control Strategy on a Harvester’s Controller Based on MATLAB Environment
Authors: Li Wei , Wen Jingqian , Jiang Qing , Song Liangtu , Zhang Zhengyong
Published: March 2019

Due to the nonlinear process of grain harvesting, there is no precise mathematical model to describe the behavior of the cleaning system of a harvester. Both the classical control and modern control methods cannot fulfil the requirements. Owing to this, the intelligent control algorithm was proposed, and the fuzzy logic control (FLC) method is a type of this. At present, most FLC algorithms are proposed in a MATLAB environment. However, the control problems in reality are controlled by microcomputer controllers with different chips. The control language of the microcomputer controller is usually written in C language. It is impossible to directly migrate the algorithm between these two different languages. Therefore, it is an important issue to transplant the FLC algorithm procedure written by MATLAB to the microcomputer controller. To realize the above target, we have built a complete set of control systems for our harvester’s cleaning system based on an upper computer and an STM32 core-chip controller. By means of combining FLC theory and expert knowledge, we adopted an improved FLC algorithm for the cleaning system, which is mounted in our self-designed combine harvester. Through this scheme, we have realized the objective of migrating the FLC algorithm from a MATLAB environment to the controller. The results of the experiment show that our method is reliable.
Polynomial-time tests for difference terms in idempotent varieties
Authors: DeMeo William , Freese Ralph , Valeriote Matthew
Published: March 2019

We consider the following practical question: given a finite algebra [Formula: see text] in a finite language, can we efficiently decide whether the variety generated by [Formula: see text] has a difference term? We answer this question (positively) in the idempotent case and then describe algorithms for constructing difference term operations.
Infinite series of quaternionic 1-vertex cube complexes, the doubling construction, and explicit cubical Ramanujan complexes
Authors: Rungtanapirom Nithi , Stix Jakob , Vdovina Alina
Published: March 2019

We construct vertex transitive lattices on products of trees of arbitrary dimension [Formula: see text] based on quaternion algebras over global fields with exactly two ramified places. Starting from arithmetic examples, we find non-residually finite groups generalizing earlier results of Wise, Burger and Mozes to higher dimension. We make effective use of the combinatorial language of cubical sets and the doubling construction generalized to arbitrary dimension. Congruence subgroups of these quaternion lattices yield explicit cubical Ramanujan complexes, a higher-dimensional cubical version of Ramanujan graphs (optimal expanders).
Nonlinear Stability of Sandwich Functionally Graded Cylindrical Shells with Stiffeners Under Axial Compression in Thermal Environment
Authors: Phuong Nguyen Thi , Nam Vu Hoai , Trung Nguyen Thoi , Duc Vu Minh , Phong Pham Van
Published: March 2019

The geometrically nonlinear response of sandwich functionally graded cylindrical shells reinforced by orthogonal and/or spiral stiffeners and subjected to axial compressive loads is investigated in this paper. Two types of sandwich functionally graded material models are considered. The formulations are based on the Donnell shell theory considering geometrical nonlinearity and Pasternak’s elastic foundation. The improved Lekhnitskii’s smeared stiffener technique is used to account for the stiffener effects with both mechanical and thermal stresses. The results obtained indicate that the spiral stiffeners have significantly beneficial influences in comparison with orthogonal stiffeners on the nonlinear buckling behavior of shells. The relatively large effects of temperature change, geometrical and material parameters are also demonstrated in the numerical investigations.
Influence of Seed Layer on Surface Morphology of ZnO Thin Films Grown by SILAR Method
Authors: Dharani A. P. , Amalraj A. Sales , Joycee S. Christina , Sivakumar V. , Senguttuvan G.
Published: March 2019

Zinc oxide (ZnO) nanostructured seed layer was grown by successive ionic layer adsorption and reaction (SILAR) method on glass substrate. The as-prepared nanostructured seed layer was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM) for its structure and surface morphology. XRD results showed a ZnO seed layer growth oriented along the (100) direction. Study of surface morphology showed ZnO nanocrystal clusters with hexagonal shape. ZnO nanorods (NRs) have been grown over the as-prepared ZnO nanostructured seed layer by immersing seed layer substrate in a chemical bath. It has been found that the morphology of the nanostructured seed layer is a key influencing factor for the growth of vertical ZnO NRs. In our growth method, we were successful in growing vertical NRs with diameter of about 100–240[Formula: see text]nm with perfect hexagonal shape. The transmittance studies were carried out to analyze the optical bandgap of the as-grown ZnO nanorods.
Review of the Preparation and Structures of Si Nanowires, Ge Quantum Dots and Their Composites
Authors: Weng Xiaokang , Yang Jie , Li Dongze , Wang Rongfei , Qiu Feng , Wang Chong , Yang Yu
Published: March 2019

Because the motion of charge carriers in nanowires and quantum dots is restricted within nanoscale in two and three dimensions, respectively, both nanowires and quantum dots exhibit many excellent optoelectronic properties. Particularly, with the advantage of being compatible with Si integrated circuits, Silicon nanowires (SiNWs) and germanium quantum dots (GeQDs) have been extensively studied in the past few decades. In order to explore novel physical properties, the integration of SiNWs and GeQDs has attracted great attention recently. In this paper, recent researches on the preparation methods and structures of SiNWs, GeQDs and their composites are reviewed, respectively. The synthesis of SiNWs with random distribution and ordered arrays by using vapor–liquid–solid growth mechanism and metal-assisted chemical etching technique is firstly summarized. Some special structures of SiNWs are also discussed. Furthermore, the development of some novel structures of GeQDs for further improving their optical properties is reviewed. Finally, the growth mechanism and structure evolution of SiNWs/GeQDs composites are illustrated from the view of theory and experiment. The strain in Ge shell layers and SiNWs, the relationship between Ge growth mode and SiNW diameter, and the distribution of GeQDs on the radial and axial directions of SiNWs are discussed in detail. The research about the growth of SiNWs/GeQDs composite structures is in its early stage, so there are many questions that need to be resolved in future.
Numerical solution of generalized DPL model using wavelet method during thermal therapy applications
Authors: Kumar P. , Rai K. N.
Published: March 2019

In this paper, generalized dual-phase-lag (DPL) model has been studied for the numerical analysis of spatial variation of temperature within living biological tissues during thermal therapy applications. A new hybrid numerical scheme based on finite difference scheme and Chebyshev wavelet Galerkin method are used to solve the generalized DPL model with constant heat flux boundary condition. Multi-resolution and multi-scale computational property of Chebyshev wavelet in the present case localizes small scale variations of solution and fast switching of functional bases. Our study demonstrates that due to presence of coupling factor (convection–perfusion), generalized DPL model predicts lower temperature than classical DPL and Pennes model at the tumor position. Higher values of phase lag times results in lower temperature at the tumor position. But, in case of variation of phase lag time due to temperature gradient, the nature of temperature profile also depends on the spatial coordinate. The effect of the blood temperature, porosity and interfacial convective heat transfer on temperature distribution has been investigated. It is found that larger values of porosity and interfacial convective heat transfer results in lower temperature at the tumor position. Also, both porosity and interfacial convective heat transfer are pronounced more at higher values. The whole analysis is presented in dimensionless form.
Media effects on the dynamics of a stochastic SIRI epidemic model with relapse and Lévy noise perturbation
Authors: Berrhazi Badr-Eddine , El Fatini Mohamed , Pettersson Roger , Laaribi Aziz
Published: March 2019

In this paper, we study the dynamic properties of an SIRI epidemic model incorporating media coverage, and stochastically perturbed by a Lévy noise. We establish the existence of a unique global positive solution. We investigate the dynamic properties of the solution around both disease-free and endemic equilibria points of the deterministic model depending on the basic reproduction number under some noise excitation. Furthermore, we present some numerical simulations to support the theoretical results.
The space of relative orders and a generalization of Morris indicability theorem
Authors: Antolín Yago , Rivas Cristóbal
Published: March 2019

We introduce the space of relative orders on a group and show that it is compact whenever the group is finitely generated. We use this to show that if [Formula: see text] is a finitely generated group acting on the line by order preserving homeomorphisms and some stabilizer of a point is a proper and co-amenable subgroup, then [Formula: see text] surjects onto [Formula: see text]. This is a generalization of a theorem of Morris.
COSTS AND BENEFITS OF CLIMATE CHANGE IN SWITZERLAND
Authors: VÖHRINGER FRANK , VIELLE MARC , THALMANN PHILIPPE , FREHNER ANITA , KNOKE WOLFGANG , STOCKER DARIO , THURM BORIS
Published: March 2019

Understanding the economic magnitude of climate change (CC) impacts is a prerequisite for developing adequate adaptation strategies. In Switzerland, despite new climate scenarios and impact studies, only few impacts have been monetized. Our objective is to assess costs and opportunities of CC for Switzerland by 2060, while enhancing the assessment methods. Using inputs from bottom-up impact studies, we simulate the economic consequences of climate scenarios in a computable general equilibrium (CGE) framework. We cover health, buildings/infrastructure, energy, water, agriculture, tourism, the spill-overs to other sectors, and international effects. Due to data constraints, significant impacts have not been quantified, e.g., for heat waves and droughts more extreme than the 2060 average climate. For the considered impacts, welfare decreases by 0.37% to 1.37% in 2060 relative to a reference without CC. Higher summer temperatures increase mortality and decrease productivity. Contrariwise, tourism benefits from extended summer seasons. Regarding energy, increased demand for cooling is overcompensated by savings in heating.
Multi-Agent Base Evacuation Support System Using MANET
Authors: Taga Shohei , Matsuzawa Tomofumi , Takimoto Munehiro , Kambayashi Yasushi
Published: March 2019

In this paper, we propose an evacuation support system that provides evacuation routes in case of disasters, and verify the usefulness of the system. Current popular wireless communication infrastructure is supported by a series of base stations and one base station handles a lot of communication. Therefore, when communication base stations break down due to disasters such as an earthquake, it may become difficult for people to use their smartphones based on the Internet. When the communication infrastructure is paralyzed, people will have great difficulty collecting information about the conditions of transportation systems and about the safety of family and friends using smartphones. Our proposed system addresses this problem by using multiple kinds of mobile agents in addition to static agents on smartphones that use a mobile ad hoc network (MANET). The proposed system collects information with mobile agents and diffuses information via mobile agents so that the system is able to provide an optimized evacuation route for each user in a dynamically changing disaster environment. In this paper, we extend our previously proposed evacuation support system to consider elevation information when constructing evacuation routes. When a tsunami or a flood tide occurs, low elevations may be under water. Therefore, this revised evacuation support system helps people to move to safer places by selecting higher elevation routes when warranted by the situation.
Research on the Physical Characteristics for Improving the Security Perceptions of Citizens: A Comparative Analysis of Zones Five and Ten of Shiraz, Iran
Authors: SEDAGHAT FARD Mohammad , SOLTANI Ali , AHMADI Habib , PAKSHIR Abdolreza
Published: March 2019

Crime and the insecurities relating to it within urban neighborhoods are currently amongst the major concerns of urban citizens, and such issues have resulted in significant harm to their social life, to the point that urban neighborhoods are even sometimes considered to be a subcategory of urban abnormality. Such a result has arisen largely due to a lack of security in cities. The qualitative and quantitative aspects associated with the sense of security are crucial to the positive existence of urban neighborhoods, both from physical and social perspectives. A particularly important issue to consider is the safety of women and girls and the elderly in urban areas, especially at night. The goal of this study is to evaluate the role that the physical characteristics of an area playing in improving the security perceptions of urban citizens within that area. The approach of the study, given its descriptive-analytic nature, might be applied to all kinds of applied research. The study’s data collection is of two forms: library documents and survey-based questionnaires. In this research, a questionnaire was developed and distributed among residents of Zones Five and Ten of Shiraz, Iran. After collecting the required data, SPSS is used for the study’s analysis. The study adopts a simple random sampling method, with the statistical population of the study areas being 281,341. In turn, the sample size used via application of the Cochran formula is 384. The results of the T-test and the F-test are used to analyze the differences between the independent and dependent variables. The findings of the research reveal that the average security perception in Zone Ten is 41.51, an amount higher than that in Zone Five, which is 37.41. The observed difference between the averages of the Zones Five and Ten confirms the hypotheses of the research. The analysis shows that such factors of physical characteristics, including parks, buildings, schools, street lighting and roads network patterns, influence the quantity of potential criminals and thus the security perceptions. In general, there is a significant difference among the physical characteristics of the study areas in terms of their security perceptions.
Association study of diabetes mellitus and body constitution of traditional Chinese medicine
Authors: Mohammadturusn Nabijan , Xu Yizhe , Xu Fei , Zhang Yuanhao , Tang Zihui , Liu Wenxian
Published: March 2019

Objective: We report on the association between traditional Chinese medicine (TCM) constitution and diabetes mellitus (DM) and provide epidemiological evidence for the theory of correlation between constitution and disease.

Methods: A total of 3748 participants were used for data analysis, and all study subjects underwent a complete clinical baseline characteristics evaluation to collect related information. DM was determined by an oral glucose tolerance test. Multiple logistic regression (MLR) models were employed to detect the associations.

Results: In total, 16.84% of the participants had DM in the total sample. Significant differences were found in age, height, weight, and heart rate, between the DM and non-DM groups. Univariate linear regression analyses indicated that the variables Qi_Deficient and Yang_Deficient were significantly associated with the outcome, and a negative correlation between TCM constitution and DM was found. After adjustment for relevant potential confounding factors, the MLR detected significant associations between both the Qi_Deficient and Yang_Deficient variables and DM ([Formula: see text]-value [Formula: see text] 0.015 for Qi_Deficient and [Formula: see text]-value [Formula: see text] for Yang_Deficient). In Qi_Deficient and Yin_Deficient participants, the odds ratios (ORs) for DM were 0.778 and 0.646, respectively.

Conclusion: Qi_Deficient and Yang_Deficient were significantly associated with DM. These findings may provide insights for clinical practice for the prevention and diagnosis of DM.
Application of Modified PageRank Algorithm for Anomaly Detection in Movements of Older Adults
Authors: Payandeh Shahram , Chiu Eddie
Published: March 2019

It is a well-known statistic that the percentage of our older adult population will globally surpass the other age groups. A majority of the elderly would still prefer to keep an active life style. In support of this life style, various monitoring systems are being designed and deployed to have a seamless integration with the daily living activities of the older adults while preserving various levels of their privacy. Motion tracking is one of these health monitoring systems. When properly designed, deployed, integrated, and analyzed, they can be used to assist in determining some onsets of anomalies in the health of elderly at various levels of their Movements and Activities of Daily Living (MADL). This paper explores how the framework of the PageRank algorithm can be extended for monitoring the global movement patterns of older adults at their place of residence. Through utilization of an existing dataset, the paper shows how the movement patterns between various rooms can be represented as a directed graph with weighted edges. To demonstrate how PageRank can be utilized, a base graph representing a normal pattern can be defined as what can be used for further anomaly detection (e.g., at some instances of observation the measured movement pattern deviates from what is previously defined as a normal pattern). It is shown how the PageRank algorithm can detect simulated change in the pattern of motion when compared with the base-line normal pattern. This feature can offer a practical approach for detecting anomalies in movement patterns associated with older adults in their own place of residence and in support of aging in place paradigm.
A Single-Layer Dual-Band Reflectarray Cell for 5G Communication Systems
Authors: Costanzo Sandra , Venneri Francesca , Borgia Antonio , Di Massa Giuseppe
Published: March 2019

A single-layer dual-band reflectarray cell is proposed in this work for future 5G systems. A reflectarray unit cell operating at 28/38 GHz is designed by adopting two pairs of miniaturized fractal patches, offering low losses (<0.7 dB) and almost full-phase ranges (≅320°) at both operating frequencies. The proposed configuration allows to achieve very small interelement spacings and negligible mutual coupling effects between the two bands, thus assuring an independent phase-tuning mechanism at both desired frequency bands. The designed compact cell is successfully adopted to demonstrate reflectarrays’ abilities in achieving fixed scanned-beam and/or multibeam patterns, under the dual-band operation mode. Full-wave numerical validations, performed on the synthesized reflectarray structures, confirm the effectiveness of the designed dual-band configuration in achieving independent radiation patterns and quite good bandwidths, at the two designed frequencies. Thanks to its compactness and versatility in achieving both frequency diversity and multibeam/scanned-beam radiation patterns, the proposed unit cell is appealing for future 5G applications.
SATB2-AS1 Suppresses Colorectal Carcinoma Aggressiveness by Inhibiting SATB2-Dependent Snail Transcription and Epithelial–Mesenchymal Transition
Authors: Wang Yi-Qing , Jiang Dong-Mei , Hu Sha-Sha , Zhao Li , Wang Lan , Yang Min-Hui , Ai Mei-Ling , Jiang Hui-Juan , Han Yue , Ding Yan-Qing , Wang Shuang
Published: March 2019

Accumulating evidence suggests that long noncoding RNA (lncRNA) plays important regulatory roles in cancer biology. However, the involvement of lncRNA in colorectal carcinoma progression remains largely unknown, especially in colorectal carcinoma metastasis. In this study, we investigated the changes in lncRNA expression in colorectal carcinoma and identified a new lncRNA, the antisense transcript of SATB2 (SATB2-AS1), as a key regulator of colorectal carcinoma progression. SATB2-AS1 was frequently downregulated in colorectal carcinoma cells and tissues, and patients whose tumors expressed SATB2-AS1 at low levels had a shorter overall survival and poorer prognosis. Downregulation of SATB2-AS1 significantly promoted cell proliferation, migration, and invasion in vitro and in vivo, demonstrating that it acts as a tumor suppressor in colorectal carcinoma. SATB2-AS1 suppressed colorectal carcinoma progression by serving as a scaffold to recruit p300, whose acetylation of H3K27 and H3K9 at the SATB2 promoter upregulated expression of SATB2, a suppressor of colorectal carcinoma growth and metastasis. SATB2 subsequently recruited HDAC1 to the Snail promoter, repressing Snail transcription and inhibiting epithelial-to-mesenchymal transition. Taken together, these data reveal SATB2-AS1 as a novel regulator of the SATB2-Snail axis whose loss facilitates progression of colorectal carcinoma.

Significance:

These data show that the lncRNA SATB2-AS1 mediates epigenetic regulation of SATB2 and Snail expression to suppress colorectal cancer progression.

See related commentary by Li, p. 3536
A formação do Estado e a Igreja no Rio da Prata
Authors: Martínez Ignacio
Published: March 2019

Este artigo combina diferentes escalas de análise para estudar processos de secularização em contextos de desarticulação e rearticulação de jurisdições políticas e eclesiásticas, associados à consolidação de soberanias e instituições modernas durante o século XIX. Reflete-se a partir de dois problemas pesquisados no espaço rio-platense: a) os inconvenientes que os experimentos republicanos apresentaram para construir uma soberania que incluísse faculdades eclesiásticas similares às da monarquia hispânica, englobadas no patronato régio e b) os atores e interesses envolvidos no processo de romanização da Igreja Católica nesse espaço.
Os imaginários religiosos na cultura política argentina
Authors: Esquivel Juan Cruz
Published: March 2019

O artigo se propõe a refletir sobre os entrecruzamentos na religião e na política, instalados nos debates conceituais em torno da secularização e da laicidade. Partindo da premissa que supõe considerar a religião como dimensão pública, interessa aqui analisar os imaginários religiosos na cultura política argentina. Para isso, entrevistou-se meia centena de deputados(as) nacionais, com o objetivo de indagar sobre suas trajetórias, seus âmbitos de formação e socialização, seus percursos na militância e na função política; sobre suas crenças religiosas; e suas percepções e avaliações sobre a presença da religião no espaço público em geral e na educação em particular, o vínculo entre os grupos religiosos e o Estado e a influência das convicções religiosas nas decisões parlamentares.
Relações perigosas: os intelectuais católicos e a Igreja argentina
Authors: Mauro Diego , Zanca José
Published: March 2019

O intelectual foi uma das figuras características do século XX. A categoria foi associada, em suas origens, a uma cultura política afastada da religião –o anticlericalismo era majoritário entre os dreyfusards. Nas décadas seguintes, o termo se expandiu para outros grupos ideológicos e espirituais. Este artigo analisa ensaisticamente a formação progressiva e a transformação de um campo intelectual católico entre a Primeira e a Segunda Guerra Mundial. A partir dos debates que acompanharam o surgimento e desenvolvimento da revista Criterio, o texto visa a compreender as especificidades do intelectual católico em diferentes situações e as ligações tecidas com as autoridades da Igreja no contexto dos vários projetos de organização dos leigos que este lançou.
Sociocultural factors related to the physical activity in boys and girls
Authors: Condessa Luciano Antonacci , Chaves Otaviana Cardoso , Silva Fernanda Marcelina , Malta Deborah Carvalho , Caiaffa Waleska Teixeira
Published: March 2019

OBJECTIVE: To verify in male and female Brazilian adolescents the association of demographic, psychosocial, behavioral and sociocultural characteristics with the regular practice of physical activity. METHODS: The sample consisted of 109,104 adolescents from all Brazilian states attending the 9th year of elementary education in 2012. The response variable was the regular practice of physical activity (300+ minutes/week). The explanatory variables were grouped into four fields: demographic, psychosocial, behavioral and sociocultural. The Poisson regression was stratified by sex to evaluate the association. RESULTS: The prevalence of active adolescents was 20.2%, higher in boys (27.9%) than in girls (13.1%). It was observed a greater practice of physical activity in boys of lower age group, children of mothers with higher schooling, who consumed healthy foods such as beans, fruits, vegetables, and milk, as well as among those with family supervision. At the same time, unhealthy habits such as insomnia and alcohol consumption were also positively associated with physical activity. In girls, greater physical activity was observed among those who lived with mothers and whose mothers had higher schooling. In addition to family supervision, the practice of physical activity in girls was also positively associated with the frequency of meals with their parents. However, as in boys, insomnia and alcohol consumption were associated with an increase in the practice of physical activity. CONCLUSIONS: One-fifth of adolescents practice physical activity regularly, demonstrating the need for specific public policies to increase the percentage of active young people in the country. Maternal schooling, healthy eating habits and family supervision were associated with regular physical activity in boys and girls, evidencing the importance of the family for the acquisition of healthy habits in this age group.
Sociodemographic Disparities in Long-Term Mortality Among Stroke Survivors in the United States
Authors: Elfassy Tali , Grasset Leslie , Glymour M. Maria , Swift Samuel , Zhang Lanyu , Howard George , Howard Virginia J. , Flaherty Matthew , Rundek Tatjana , Osypuk Theresa L. , Zeki Al Hazzouri Adina
Published: March 2019

Background and Purpose—

It is unclear whether disparities in mortality among stroke survivors exist long term. Therefore, the purpose of the current study is to describe rates of longer term mortality among stroke survivors (ie, beyond 30 days) and to determine whether socioeconomic disparities exist.

Methods—

This analysis included 1329 black and white participants, aged ≥45 years, enrolled between 2003 and 2007 in the REGARDS study (Reasons for Geographic and Racial Differences in Stroke) who suffered a first stroke and survived at least 30 days after the event. Long-term mortality among stroke survivors was defined in person-years as time from 30 days after a first stroke to date of death or censoring. Mortality rate ratios (MRRs) were used to compare rates of poststroke mortality by demographic and socioeconomic characteristics.

Results—

Among adults who survived ≥30 days poststroke, the age-adjusted rate of mortality was 82.3 per 1000 person-years (95% CI, 75.4–89.2). Long-term mortality among stroke survivors was higher in older individuals (MRR for 75+ versus <65, 3.2; 95% CI, 2.6–4.1) and among men than women (MRR, 1.3; 95% CI, 1.1–1.6). It was also higher among those with less educational attainment (MRR for less than high-school versus college graduate, 1.5; 95% CI, 1.1–1.9), lower income (MRR for <$20k versus >50k, 1.4; 95% CI, 1.1–1.9), and lower neighborhood socioeconomic status (SES; MRR for low versus high neighborhood SES, 1.4; 95% CI, 1.1–1.7). There were no differences in age-adjusted rates of long-term poststroke mortality by race, rurality, or US region.

Conclusions—

Rates of long-term mortality among stroke survivors were higher among individuals with lower SES and among those residing in neighborhoods of lower SES. These results emphasize the need for improvements in long-term care poststroke, especially among individuals of lower SES.
Outcomes Among Patients With Ischemic Stroke Treated With Intravenous tPA (Tissue-Type Plasminogen Activator) via Telemedicine
Authors: Wysocki Nicole Anne , Bambhroliya Arvind , Ankrom Christy , Vahidy Farhaan , Astudillo César , Trevino Alyssa , Malazarte Rene , Cossey T.C. , Jagolino-Cole Amanda , Savitz Sean , Wu Tzu-Ching , Sharrief Anjail
Published: March 2019

Background and Purpose—

Telemedicine is increasingly utilized for intravenous tPA (tissue-type plasminogen activator) delivery. The comparative safety of leaving tPA-treated patients at a presenting (spoke) hospital (drip-and-stay) or transferring patients to a central treating (hub) hospital (drip-and-ship) is not established. We sought to compare outcomes between drip-and-ship and drip-and-stay patients treated with tPA via telemedicine. We hypothesized that there would be no differences in short-term outcomes of in-hospital mortality, length of stay, or discharge disposition or in 90-day outcomes between groups.

Methods—

We retrospectively identified patients treated with tPA at 17 spoke hospitals between September 2015 and December 2016. Demographic, clinical, and outcome data were obtained from a prospective telemedicine registry. We used negative binomial, multinomial, and logistic regression analyses to evaluate length of stay, discharge disposition, and inpatient mortality, respectively. We compared the proportion of patients with 90-day modified Rankin Scale score <2 by group.

Results—

Among 430 tPA-treated patients, 232 (53.9%) were transferred to the hub after treatment. The median arrival National Institutes of Health Stroke Scale score was higher for drip-and-ship (10; interquartile range, 5–18) compared with drip-and-stay patients (6; interquartile range, 4–10;
P
<0.001). Unadjusted length of stay was longer in drip-and-stay patients (incidence rate ratio, 0.82; 95% CI, 0.71–0.95). There were no significant differences in adjusted length of stay, hospital mortality, or discharge disposition. Among the 64% of patients with complete 90-day modified Rankin Scale score, the proportion with good outcomes (modified Rankin Scale score <2) did not differ between groups.

Conclusions—

We found no differences in measured outcomes between drip-and-ship and drip-and-stay patients treated in our network, although our study may be underpowered to detect small differences.
The Dative Dispositional Construction in Russian
Authors: Kim Dganit Jenia , Siloni Tal
Published: March 2019

The article sheds new light on the so-called dative dispositional construction in Russian. We revise the characterization of the classes of verbs able to feed the construction, showing that its input is best defined in terms of the Theta System (Reinhart’s ( 2002 , 2016 ) approach to thematic relations). To resolve controversies in the literature regarding the licensing conditions of the construction and its possible interpretations, we ran two surveys whose design and findings we report. We then discuss the properties of the construction comparatively, define the operation deriving it, and provide evidence that the operation is lexical. This has consequences regarding the nature of the lexical component.
Contribution to the study of the genus Fosterella (Bromeliaceae: Pitcairnioideae) in Brazil
Authors: LEME ELTON M. C. , FORZZA RAFAELA C. , HALBRITTER HEIDEMARIE , RIBEIRO OTÁVIO B.C.
Published: March 2019

The pitcairnioid genus Fosterella currently comprises 31 species distributed from Mexico in North America, along the eastern slopes of the Andes in central South America, Southern Peru to northern Argentina, encompassing western, northern and southeastern Brazil and northern Paraguay. Their species have rather small ranges, representing local endemics traditionally difficult to circumscribe mainly because the presence of subtle morphological characters associated to tiny floral parts. The present taxonomical study of the Fosterella species occurring in Brazil is founded on morphological characters, habitat preference, and geographic distribution. The number of Brazilian species is increasing to eight, three of them described as new here, including an unexpected outlier in geographical range and two new records for the country. Full descriptions and an identification key are provided, and morphological relationships are discussed as well.
Curcuma tongii, a new species of Curcuma subgen. Ecomatae (Zingiberaceae) from southern Yunnan, China
Authors: ZHANG LI-XIA , DING HONG-BO , LI HAI-TAO , ZHANG ZHONG-LIAN , TAN YUN-HONG
Published: March 2019

Curcuma tongii, a new species of Curcuma subg. Ecomatae (Zingiberaceae) from southern Yunnan, China, is described and illustrated here. The similarities and differences from its closest allied species in the subg. Ecomatae, C. singularis and C. flaviflora, C. newmanii, are discussed. The conservation assessment and distribution map are also provided.
New species and records of Beckidia Sæther (Diptera: Chironomidae) from the Russian Far East
Authors: ZORINA OKSA V.
Published: March 2019

Two new species of Beckidia Sæther, B. biraensis and B. connexa, from the Amur River Basin are described and figured as males. The male of B. tethys (Townes) is redescribed and figured and the species is recorded for the first time from Russia. The generic diagnosis is emended and a key to the males of Beckidia from the Holarctic Region is given.
Observations on the quill mites (Acari: Syringophilidae) from charadriiform birds
Authors: SKORACKI MACIEJ , DABERT JACEK , SCHMÄSCHKE RONALD
Published: March 2019

We provide a list of all 19 named species of the family Syringophilidae (Acari: Prostigmata) parasitizing charadriiform birds (Charadriiformes) together with new records and keys to these species. We describe a new species Niglarobia cursoriae sp. nov. from Cursorius temminckii Swainson (Glareolidae) and redescribe Creagonycha totana (Oudemans, 1904) from Tringa totanus L. (Scolopacidae). Niglarobia cursoriae sp. nov. differs from the closely related species N. rhinoptili Fain et al., 2000 in the following characters: in females of N. cursoriae sp. nov. hysterosomal shield is present and fused with pygidial shield; the length ratio of setae g:pg1:pg2 is 1:5:3.8. In females of N. rhinoptili the hysterosomal shield is absent; and the length ratio of setae g:pg1:pg2 is 1:3:2. All known syringophilid records from charadriiform birds are summarized in tabular form.
An updated catalogue of the Histeridae (Insecta: Coleoptera) of the Arabian Peninsula, with biogeographical remarks
Authors: PENATI FABIO , VIENNA PIERPAOLO
Published: March 2019

The histerid fauna of the Arabian Peninsula is evaluated. As a result of the study of specimens recently collected in Oman by the scientific expeditions of the Museum of Natural History and Territory of Calci (University of Pisa, Italy), and compiling new data from 15 public and private collections, and literature records, the total number of Histeridae known from the Arabian Peninsula now stands at 67 species, without taking into account dubious species and undetermined taxa (9).Of these 67 species, in total 18 are reported for the first time: 4 for the Arabian Peninsula [Teretrius (Neotepetrius) parasita Marseul, Saprinus (Saprinus) flexuosofasciatus Motschulsky, Chalcionellus hauseri (Schmidt), Hypocacculus (Nessus) hosseinius (Théry)], 9 for Oman [Pachylister luctuosus (Marseul), Hister castus Lewis, Atholus bimaculatus Linnaeus, Atholus scutellaris (Erichson), Saprinus (Saprinus) splendens (Paykull), Hypocacculus (Colpellus) praecox (Erichson), Hypocacculus (Hypocacculus) harmonicus (Marseul), Hypocacculus (Hypocacculus) metallescens (Erichson), Hypocaccus (Hypocaccus) fochi (Auzat)], 2 for Yemen [Saprinus (Saprinus) tenuistrius tenuistrius Marseul, Chalcionellus tunisius (Marseul)] and 3 for Kuwait [Saprinus (Saprinus) moyses Marseul, Pholioxenus mesopotamicus Olexa, Paravolvulus syphax (Reitter)].Histeridae are now known for four national states (Saudi Arabia, Yemen, Oman and Kuwait), while there are no records for Qatar or United Arab Emirates. An updated comprehensive catalogue of the histerid fauna of the Arabian Peninsula is provided.Analysis of faunal affinities shows that it mostly consists of Palearctic species (24 species, equal to 35.9%), followed by Afrotropical and Afrotropico-Mediterranean species (22 species, 32.8%), and cosmopolitan/subcosmopolitan species (7 species, 10.4%); endemics stand at 5 species (7.5%), while species of undefined chorology at 9 (13.4%). On the whole these numbers fit well the largely accepted biogeographical assumption that indicates the Arabian Peninsula as a transitional zone between the Regions Palearctic, Afrotropic and, to a lesser degree, Indo-Malay (e.g., Büttiker 1979). Moreover, a distinctive distributional pattern has been recognised: “Afrotropical” Histeridae are almost exclusively present in the southern and south-western parts of the peninsula, while “Palearctic” Histeridae are mostly present in the inner central and south-eastern parts of the peninsula.Finally, the synonymy Saprinus (Saprinus) osiris Marseul, 1862 = Saprinus (Saprinus) ornatus Erichson, 1834 stated by Müller (1933), but neglected by Mazur (1976, 1984, 1994, 1997), is considered valid.
Two new species of Anaplectoidea Shelford 1906 from China (Blattaria: Blattellidae)
Authors: WANG ZONG-QING , JIANG HONG-YUN , FENG PING-ZHANG
Published: March 2019

One known species, A. varia Bey-Bienko is illustrated for the first time, and two new species, A. cylindrica, sp. nov., A. spinea, sp. nov. are described and illustrated. A key to males from China is provided. The type specimens of new species are deposited in the Museum of Plant Protection, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (IPP, CAAS).
Contributions to the larvae of North American Nixe (Ephemeroptera: Heptageniidae), with the description of N. dorothae sp. nov. from southern Indiana
Authors: WEBB J. M. , MCCAFFERTY W. P.
Published: March 2019

Nixe dorothae n. sp. (Ephemeroptera: Heptageniidae) is described from southern Indiana, USA based on larvae, males, and females. Larvae are easily differentiated from those of the other known North American species by the presence of two rows of denticles on the tarsal claws. Males are differentiated from congeners by the presence of median spines on the apical sclerites of the penes and reddish-brown abdominal terga. The larva of N. rusticalis is described for the first time; it is differentiated from known North American Nixe by having more than 15 comb setae on the maxilla. A preliminary key for the larvae of the known North American Nixe is provided.
Two new species and one new record of the genus Caliscelis de Laporte (Hemiptera: Fulgoroidea: Caliscelidae) from China
Authors: CHE YANLI , WANG YINGLUN , ZHANG YANLIN
Published: March 2019

This paper examines five species of the genus Caliscelis de Laporte, of which two new species, C. rhabdocladis sp. nov.and C. triplicata sp. nov., are described and illustrated, C. affinis Fieber is reported for the first time from China, and other two known species C. orientalis Ôuchi and C. chinensis Melichar are redescribed and illustrated. A checklist of the world Caliscelis fauna and a key to all Chinese species of Caliscelis are provided.
Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini)
Authors: GIBBS JASON
Published: March 2019

Bees in the subgenus Lasioglossum (Dialictus) are commonly collected, behaviourally diverse and taxonomically challenging. The metallic species of Lasioglossum (Dialictus) occurring east of the Mississippi River are revised. Taxonomic treatments of all 97 species are provided with complete descriptions and illustrations given for the 40 species, which have not been recently described elsewhere. Identification keys for males and females are provided. The following eleven new species are described: Lasioglossum (Dialictus) arantium new species, L. (D.) ascheri new species, L. (D.) batya new species, L. (D.) curculum new species, L. (D.) furunculum new species, L. (D.) georgeickworti new species, L. (D.) gotham new species, L. (D.) izawsum new species, L. (D.) katherineae new species, L. (D.) rozeni new species, and L. (D.) trigeminum new species. Lasioglossum ascheri, L. curculum, L. furunculum, L. izawsum, and L. rozeni are believed to be social parasites or cleptoparasites of nest-building L. (Dialictus). Lasioglossum (D.) smilacinae (Robertson) is resurrected from synonymy with L. laevissimum (Smith). Lasioglossum (D.) nymphaearum (Robertson) is resurrected from synonymy with L. albipenne (Robertson).Lasioglossum rufulipes (Cockerell) and L. testaceum (Robertson) are removed from Evylaeus and placed in Dialictus. The following eleven new synonymies are proposed (junior subjective synonym listed second): L. (D.) flaveriae (Mitchell) = Dialictus tahitensis Mitchell; L. (D.) leucocomum (Lovell) = Dialictus otsegoensis Mitchell; L. (D.) lionotum (Sandhouse) = Paralictus asteris Mitchell; L. (D.) longifrons (Baker) = L. (Chloralictus) robertsonellum Michener; L. (D.) nigroviride (Graenicher) = Evylaeus pineolensis Mitchell; L. (D.) simplex (Robertson) = Halictus (Chloralictus) malinus Sandhouse; L. smilacinae (Robertson) = Halictus zophops Ellis, = D. philanthanus Mitchell; L. (D.) testaceum (Robertson) = Halictus (Chloralictus) scrophulariae Cockerell, = Lasioglossum (Chloralictus) sandhouseae Michener; and L. (D.) versans (Lovell) = Evylaeus divergenoides Mitchell. Lectotypes are designated for Halictus albipennis Robertson (1890), Halictus albitarsis Cresson (1872), Halictus cressonii Robertson (1890), Halictus disparilis Cresson (1872), Halictus hortensis Lovell (1905), Halictus nubilis Lovell (1905), Halictus pilosus leucocomus Lovell (1908), Halictus planatus Lovell (1905), Halictus stultus Cresson (1872), Halictus subconnexus rohweri Ellis (1915), Halictus tegularis Robertson (1890), Halictus versans Lovell (1905), and Halictus viridatus Lovell (1905).
Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
Authors: ALARIE YVES , MICHAT MARIANO C. , MILLER KELLY B.
Published: March 2019

An analysis of the primary setae and pores of first instars of 13 species of Dytiscinae was performed to deduce the ancestral system of primary setae and pores of the head capsule, head appendages, legs, last abdominal segment and urogomphus. One hundred and thirty-one setae, 69 pores and three setal groups have been assigned to the ground-plan pattern of the dytiscine larva, 27 setae and 20 pores on the head capsule; 30 setae, 25 pores and three setal groups on the cephalic appendages; 51 setae and 18 pores on the legs; 15 setae and three pores on the last abdominal segment; and eight setae and three pores on the urogomphus. A hypothesis of the phylogeny of the tribes of Dytiscinae is presented on a cladistic analysis of first instar chaetotaxy characters conducted using the program TNT. All tribes of Dytiscinae were included with larger tribes represented by multiple genera. Our concept of the subfamily Dytiscinae as defined on the basis of first instar chaetotaxy was found separated into three distinct clades: (1) Cybistrini, (2) Dytiscini + Hyderodini, and (3) Aubehydrini + Hydaticini + Eretini + Aciliini. The proposed relationships of the tribes of Dytiscinae are ((Cybistrini + (Hyderodini + Dytiscini)) + (Aubehydrini + (Hydaticini + (Eretini + Aciliini)))). Characters useful for phylogenetic analysis of the subfamily are described and illustrated.