bluuebunny/crossref_metadata_2025_split huggingface dataset:
Equal-Order Stabilized Finite Element Approximation of the p-Stokes Equations on Anisotropic Cartesian Meshes
Authors: Ahlkrona Josefin , Braack Malte 
Published: February 2019

Abstract
The p-Stokes equations with power-law exponent

p
∈

(
1
,
2
)

{p\in(1,2)}

describes non-Newtonian, shear-thinning, incompressible flow. In many industrial applications and natural settings, shear-thinning flow takes place in very thin domains. To account for such anisotropic domains in simulations,
we here study an equal-order bi-linear anisotropic finite element discretization of the p-Stokes equations, and extend a non-linear Local Projection Stabilization to anisotropic meshes. We prove an a priori estimate and illustrate the results with two numerical examples, one confirming the rate of convergence predicted by the a-priori analysis, and one showing the advantages of an anisotropic stabilization compared to an isotropic one.
Analysis of the Influence of Transmission Resources Control in Tree Structure Networks
Authors: Bujnowski Sławomir , Marciniak Tomasz , Marciniak Beata , Lutowski Zbigniew , Marchewka Adam 
Published: February 2019

Abstract
The aim of the paper is to draw attention to the possibility of improving the transmission properties of telecommunication networks by subordinating the capacity of individual links to the frequency of their occurrence in a set of minimum length paths. The defined unevenness coefficient was used to divide the global transmission resources of the network in order to make the traffic carried by this network as large as possible. The article presents the results of the simulation tests to which tree topology network was subjected.
Design of a Telemedical Vest for Sleep Disorder Diagnosis - A Preliminary Analysis
Authors: Drzazga Jakub Bogdan 
Published: February 2019

Abstract
This paper presents the components of a sleep apnea analysis device that have been evaluated for diagnosis suitability and expected difficulties. The medical background and statistics of sleep apnea are presented. Work related to the topic is then discussed. A description of the system components follows: ECG, respiratory effort, nasal flow and pulse oximetry. Problems expected with all of these measurements are then outlined both from the methodological and electronic perspective. The main difficulties identified are the necessity to maintain the exact location of the sensors on the patient’s body and vulnerability of the sensors to variations of the environmental conditions. Challenges on the electronic aspect are then discussed, which are mainly caused by the need of measuring small signals (noise, interference) and compensation of the sensors’ nonlinearity. Power supply design in the context of the measurement accuracy is also considered followed by an evaluation of the impact of telemedical function presence. The paper ends with a summary and conclusions.
Learning solutions to the source inverse problem of wave equations using LS-SVM
Authors: Wu Ziku , Ding Chang , Li Guofeng , Han Xiaoming , Li Juan 
Published: February 2019

Abstract
A method based on least squares support vector machines (LS-SVM) is proposed to solve the source inverse problem of wave equations. Contrary to the most existing methods, the proposed method provides a closed form approximate solution which satisfies the boundary conditions and the initial conditions. The proposed method can recover the unknown source term with the given additional conditions. Furthermore, it has reasonable robustness to noise. Numerical results show the proposed method can be used to solve the source inverse problem of wave equations.
Exact information ratios for secret sharing on small graphs with girth at least 5
Authors: Harsányi Károly , Ligeti Péter 
Published: February 2019

Abstract
In a secret-sharing scheme, a piece of information – the secret – is distributed among a finite set of participants in such a way that only some predefined coalitions can recover it.
The efficiency of the scheme is measured by the amount of information the most heavily loaded participant must remember.
This amount is called information ratio, and one of the most interesting problems of this topic is to calculate the exact information ratio of given structures.
In this paper, the information ratios of all but one graph-based schemes on 8 or 9 vertices with a girth at least 5 and all graph-based schemes on 10 vertices and 10 edges with a girth at least 5 are determined using two polyhedral combinatoric tools: the entropy method and covering with stars.
Beyond the investigation of new graphs, the paper contains a few improvements and corrections of recent results on graphs with 9 vertices.
Furthermore, we determine the exact information ratio of a large class of generalized sunlet graphs consisting of some pendant paths attached to a cycle of length at least 5.
Genetic variability in Peregrine Falcon populations of the Western Palaearctic region
Authors: Mengoni Chiara , Zuberogoitia Iñigo , Mucci Nadia , Boano Giovanni , Urban Tomáš , Guzzo Enrico , Sarà Maurizio 
Published: February 2019

Abstract
We analysed variation in ten polymorphic microsatellite loci and a portion of cytochrome b gene of mitochondrial DNA in 65 samples from four populations of Peregrine Falcon (Falco peregrinus peregrinus and F. p. brookei) breeding in Northern and Southern Italy, Northern Spain and the Czech Republic to assess genetic diversity in the poorly investigated Western Palearctic region. We added to our cytochrome b sequences a dataset of previously published mtDNA sequences of other populations and subspecies to outline genetic variation in the region on a worldwide basis. Regarding mtDNA we identified 12 haplotypes from our 65 Peregrine Falcon samples, nine of which were new and three already known. The 52% of our samples, including all Italian and Czech specimens, belonged to the previously identified HI haplotype, another 22% of the samples, most of which were from Sicily, showed the new H1 haplotype, while the remaining 26% of the sample partitioned among the other 10 haplotypes. Allelic patterns and genetic structuring of microsatellites were similar to those of other European populations. Genetic differentiation in both mtDNA and microsatellites loci is almost absent and it is not possible to distinguish geographical groups according to taxonomic designation at the subspecies level.
Long-term monitoring of a successful recovery program of Peregrine Falcons in Virginia
Authors: Watts Bryan D. , Byrd Mitchell A. , Mojica Elizabeth K. , Padgett Shawn M. , Harding Sergio R. , Koppie Craig A. 
Published: February 2019

AbstractThe Peregrine Falcon(Falco peregrinus anatum)was believed to be extirpated as a breeding species in Virginia by the early 1960s. An aggressive restoration program was initiated in 1978 that involved the release of captive-reared birds totaling 115 on the Coastal Plain (1978–1985) and 127 in the Mountain physiographic region (1985–1993). The first occupied territory was established and the first breeding attempt was documented in 1979 and 1982, respectively. We have monitored the size, distribution, reproductive rate, and substrate use of the resulting breeding population (1979–2016). The population proceeded through an establishment phase (1979–1993) driven by releases with an average doubling time of 3.8 yrs to a consolidation phase (1994–2016) with an average doubling time of 23.1 yrs. The state supported 31 breeding pairs by 2016. Per capita reproductive rates have increased significantly over the study period from 0.89 (1979–1993) to 1.86 (1994–2016). Average nesting success increased from 67.1% to 82.7% over the same period. Nesting attempts (n = 469) have been documented on dedicated peregrine towers (52.1%), bridges (26.1%), buildings (4.1%), and various man-made structures (13.0%) with only 4.7% documented on natural cliffs. The population appears to be self-sustaining with reproductive rates exceeding 1.5 young/pair every year since 1999. An ongoing management concern is that only 8.9% of known territories (n = 45) identified since introductions and 4.7% of documented breeding attempts (n = 469) have occurred within the historic mountain breeding range.
Results of eighteen years (2000–2017) monitoring study of an extra-alpine Peregrine Falcon Falco peregrinus population in North-Western Italy
Authors: Beraudo Pier Luigi 
Published: February 2019

Abstract
The Author reports the results of a survey about a breeding extra-alpine Peregrine Falcon population in Cuneo Province, NW Italy. The first reproduction was recorded in 2000, and from that year, the monitoring work localized 16 occupied territories in an area of 1,900 km2 covering the hills and nearby lowland areas. The average distance between breeding territories was of 7.6 km with a density 0.7 pairs/100 km2. During the eighteen years, 89 successful breeding attempts were recorded, 81 of them led to fledging of 206 young. Average breeding success was 2.5 juv/reproducing pairs. The nests are located on bridges (motorway viaducts and rail way bridges) and clay/sandstone cliffs. Preliminary prey analyses showed that pigeons and doves represent the 75% of their diet.
Dynamics of brain connectivity after stroke
Authors: Desowska Adela , Turner Duncan L. 
Published: February 2019

Abstract
Recovery from a stroke is a dynamic time-dependent process, in which the central nervous system reorganises to accommodate for the impact of the injury. The purpose of this paper is to review recent longitudinal studies of changes in brain connectivity after stroke. A systematic review of research papers reporting functional or effective connectivity at two or more time points in stroke patients was conducted. Stroke leads to an early reduction of connectivity in the motor network. With recovery time, the connectivity increases and can reach the same levels as in healthy participants. The increase in connectivity is correlated with functional motor gains. A new, more randomised pattern of connectivity may then emerge in the longer term. In some instances, a pattern of increased connectivity even higher than in healthy controls can be observed, and is related either to a specific time point or to a specific neural structure. Rehabilitation interventions can help improve connectivity between specific regions. Moreover, motor network connectivity undergoes reorganisation during recovery from a stroke and can be related to behavioural recovery. A detailed analysis of changes in connectivity pattern may enable a better understanding of adaptation to a stroke and how compensatory mechanisms in the brain may be supported by rehabilitation.
A Telehealth-Enhanced Referral Process in Pediatric Primary Care: A Cluster Randomized Trial
Authors: Coker Tumaini R. , Porras-Javier Lorena , Zhang Lily , Soares Neelkamal , Park Christine , Patel Alpa , Tang Lingqi , Chung Paul J. , Zima Bonnie T. 
Published: February 2019

OBJECTIVES:
To improve the mental health (MH) referral process for children referred from primary care to community mental health clinics (CMHCs) by using a community-partnered approach.

METHODS:
Our partners were a multisite federally qualified health center and 2 CMHCs in Los Angeles County. We randomly assigned 6 federally qualified health center clinics to the intervention or as a control and implemented a newly developed telehealth-enhanced referral process (video orientation to the CMHC and a live videoconference CMHC screening visit) for all MH referrals from the intervention clinics. Our primary outcome was CMHC access defined by completion of the initial access point for referral (CMHC screening visit). We used multivariate logistic and linear regression to examine intervention impact on our primary outcome. To accommodate the cluster design, we used mixed-effect regression models.

RESULTS:
A total of 342 children ages 5 to 12 were enrolled; 86.5% were Latino, 61.7% were boys, and the mean age at enrollment was 8.6 years. Children using the telehealth-enabled referral process had 3 times the odds of completing the initial CMHC screening visit compared with children who were referred by using usual care procedures (80.49% vs 64.04%; adjusted odds ratio 3.02 [95% confidence interval 1.47 to 6.22]). Among children who completed the CMHC screening visit, intervention participants took 6.6 days longer to achieve it but also reported greater satisfaction with the referral system compared with controls. Once this initial access point in referral was completed, &gt;80% of eligible intervention and control participants (174 of 213) went on to an MH visit.

CONCLUSIONS:
A novel telehealth-enhanced referral process developed by using a community-partnered approach improved initial access to CMHCs for children referred from primary care.
On evaluation and comparison of measurement methods with special reference to the meat and meat products
Authors: Körmendy L. , Zukál E. 
Published: February 2019

The authors discuss the main systematizing principles, not generally used in the field of meat science, regarding critical appreciation and comparison of measurement methods. The presentation of some basic considerations is followed by the discussion of interfering factors. Besides the random error, the role and importance of the constant, proportional and random biases are also treated. The random error is related to the method, while the random bias is related to the test material. A clear distinction is necessary between deterministic and stochastic relations when various methods are compared, emphasizing a possible instability of the regression constants in the latter case. A number of examples are listed for both types of relation. The use of the correlation coefficient may be erroneous in comparing two methods. However, Mandel’s sensitivity ratio often furnishes an appropriate basis of comparison. For better understanding, the considerations on biases are illustrated by a simplified example.
Thereafter, the authors deal with the most important view-points in developing and revising a method of measurement: simplicity, robustness and instability. The handling of extreme observations or outliers and the concentration dependence of the relative standard deviation (coefficient of variation) of measurement are also discussed.
Vitamin C decomposition kinetics in solutions, modelling citrus juices
Authors: Pátkai Gy. , Körmendy I. , Körmendy-Domján A. 
Published: February 2019

Fibre-rich fruit juices are playing an increasing role in healthy nutrition, and consumers are regarding them, especially citrus juices of 100% fruit content, as reliable sources of vitamin C. Nevertheless relatively few scientific data are available on vitamin C retention during the heat treatment of aseptically packed fruit juices made from fruit concentrates. Authors investigated this problem within the scope of OTKA T 014965 research project (Körmendy et al., 1998, 1999a, 1999b; Pátkai, 1998).
Instead of separate case studies on different types of fruit juices and technologies, authors analysed the vitamin C content of model solutions with similar composition to real citrus juices as a function of temperature and duration of heat treatment and that of initial oxygen and ascorbic acid concentration. Based on the measured data, they elaborated kinetic relations and determined the reaction rate constants of vitamin C decomposition under the experimental conditions. By means of the calculated kinetic relations and reaction rate constants one can estimate the losses of vitamin C in the case of known parameters of the heat treatment, packaging material, oxygen and vitamin C concentration within the investigated domain. Results may promote technology and product development in the field of citrus fruit juices.
Mobilitas Uranium pada Endapan Sedimen Sungai Aktif di Daerah Mamuju, Sulawesi Barat
Authors: Mu’awanah Frida Rosidatul , Priadi Bambang , Widodo Widodo , Sukadana I Gde , Andriansyah Rian 
Published: February 2019

ABSTRAK Mamuju merupakan daerah yang memiliki nilai laju dosis radiasi (radioaktifitas) tinggi. Daerah penelitian terdiri dari 6 sektor yaitu Sektor Ahu, Orobatu, Takandeang, Botteng, Pangasaan, dan Taan. Variasi batuan pada daerah penelitian tidak mencerminkan distribusi uranium, sehingga diperlukan metode geokimia untuk mengetahui distribusi uranium pada sistem drainase. Penelitian ini bertujuan untuk memberikan gambaran mobilitas dan distribusi uranium pada sistem drainase dengan menggunakan sampel sedimen sungai aktif. Analisis mobilitas uranium menggunakan persen labil yang didapatkan dari perbandingan uranium total dan uranium labil. Nilai uranium total didapatkan dari pengukuran X-Ray fluorescence spectrometry dan nilai uranium labil didapatkan dari pengukuran labile fluorimetry. Pengambilan sampel dilakukan pada 4 lokasi potensial berdasarkan data radiometri. Hasil analisis menunjukkan Sektor Ahu memiliki nilai anomali uranium labil >113,44 ppm, Sektor Pangasaan dengan nilai anomali uranium labil >168,63 ppm, Sektor Takandeang dengan nilai anomali uranium labil >74,36 ppm, dan Sektor Botteng dengan nilai anomali uranium labil >84,23 ppm. Tipe anomali yang teridentifikasi pada dua sektor, yaitu anomali pada sektor Ahu berhubungan dengan presipitasi hidrolisat uranium terlarut pada endapan sungai dari lava Ahu dan breksi Tapalang, sementara anomali pada Sektor Takandeang berhubungan dengan pengayaan permukaan uranium in situ pada tanah dan batuan lava Takandeang. ABSTRACT Mamuju is an area that has a high dose rate (radioactivity) value. The research area consists of 6 sectors namely Ahu, Orobatu, Takandeang, Botteng, Pangasaan, and Taan Sector. Lithological distribution does not represent the distribution of uranium; therefore geochemical method is needed to observe the distribution of uranium in the drainage system. The aim of this research is to provide an overview of the mobility and distribution of uranium in the drainage system using stream sediment. Uranium mobility analysis uses labile percent obtained from the ratio of total uranium and labile uranium, the total uranium value obtained from the measurement of X-Ray fluorescence spectrometry and the value of labile uranium obtained from measurement of labile fluorimetry. The sample taken from 4 potential areas based on radiometric value Map. The result of analysis shows that Ahu Sector has labile uranium anomaly >113.44 ppm, Pangasaan Sector with labile uranium anomaly >168.63 ppm, Takandeang Sector with uranium labile anomaly values >74.36 ppm, and Botteng Sector with uranium labile anomaly >84.23 ppm. The anomaly types identified from two sectors, namely Ahu Sector anomaly is related to the precipitation of dissolved uranium hydrolysates in stream deposit originating from Ahu lava and Tapalang breccia, while Takandeang Sector anomaly is related to the enrichment of in situ uranium in soil and Takandeang lava.
Who’s Teaching Which Languages Online?
Authors: Murphy-Judy Kathryn A. , Johnshoy Marlene 
Published: February 2019

This paper describes findings from recent national surveys on online language education (OLE) within a broader context of national surveys of post-secondary online education and world language enrollments. The surveys discussed and compared are the 2012 CARLA Survey by Johnshoy and BOLDD Surveys by Murphy-Judy (2014 & 2015). The findings reported here include: types and sizes of institutions; demographics of the teaching corps (CARLA data only); and, the mix of languages and levels. This work aims to provide useful information on online language education as it emerges as an important field in world language teaching and learning in the 21st century.
El costo social de la república: los trabajadores de los sistemas defensivos de Cartagena de Indias, 1750-1850
Authors: Solano D. Sergio Paolo 
Published: February 2019

Con el propósito de determinar las consecuencias sociales de la independencia sobre la población libre trabajadora de Cartagena de Indias, este artículo compara las inversiones realizadas y cantidades de trabajadores contratados en sus sistemas defensivos entre 1750 y 1850 tomando como parteaguas los años de la independencia. Teniendo como telón de fondo los actuales debates historiográficos sobre las consecuencias de las independencias sobre las economías y las sociedades hispanoamericanas, argumentamos que la combinación de la pérdida de privilegios, el cambio de la situación política y de las estrategias de la guerra a nivel internacional, aunado a la crisis presupuestal de la naciente república, afectaron la demanda laboral en esa ciudad, la que había estado vinculada a los trabajos en los sistemas defensivos.
Diversité des champignons endomycorhiziens de l’arganier et potentiel mycorhizogène des sols rhizosphériques des arganeraies du Sud-Ouest marocain
Authors: Ouallal Imane , Abbas Younes , Ech-cheddadi Sara , Ouajdi Mohamed , Ouhadach Moussa , El Yacoubi Houda , Kerdouh Benaissa , El Goumi Younes , Rochdi Atmane 
Published: February 2019

L’arganier, Argania spinosa, est une espèce endémique du Maroc, structurant des formations forestières remarquables et façonnant un terroir agricole original. Si son statut mycorhizien a été largement étudié, la diversité mycorhizienne associée et son efficacité, en tenant compte du lien avec les contextes pédoclimatiques et la diversité des territoires de l’arganier, demeure méconnue. Aussi, neuf arganeraies du Sud-Ouest marocain ont fait l’objet d’investigations afin, d’une part, d’explorer la diversité des communautés de champignons mycorhiziens associés à cet arbre dans diverses situations édapho-climatiques, et, d’autre part, d’évaluer le potentiel mycorhizogène des environnements rhizosphériques, en vue de les exploiter comme sources d’inocula. L’examen microscopique des racines de l’arganier confirme la mycotrophie de l’espèce et sa dépendance aux champignons mycorhiziens arbusculaires (CMA), quel que soit le site prospecté. Les spores de CMA isolées des sols rhizosphériques des arganeraies étudiées restent de faible densité. Les corrélations entre les différents morphotypes sont très hautement significatives au sein du genre Glomus. Dans certains sites, une corrélation positive apparaît entre la densité de spores et l’intensité de mycorhization des racines. Une corrélation négative se présente entre le potentiel mycorhizien des neuf sols étudiés et les propriétés chimiques des sols. Ces résultats suggèrent que d’autres facteurs édaphiques (propriétés biologiques des sols, par exemple) ou le degré de perturbation des sols des arganeraies, lié aux usages agricoles et au pâturage, pourraient influencer fortement le processus de mycorhization de l’arganier. Il en est ainsi de la performance des spores mycorhiziennes, ce qui conduit à devoir éviter de contre-sélectionner des CMA inefficients en matière de survie et de croissance de l’arganier, qu’il s’agisse de production en pépinières forestières ou de réhabilitation en milieu naturel.
Preliminary Study of Photocatalytic Degradation of Methylene Blue Dye using Magnetic Alginate/Fe3O4 (Alg/Fe3O4) Nanocomposites
Authors: Fadillah Ganjar , Serunting Muhamad Allan 
Published: February 2019

The Magnetic compound, Fe3O4, is one of the compounds that is easily hydrolyzed and oxidized. A coating method was presented in this study to prevent the process. The modifications of Fe3O4 were carried out by supporting alginate as natural polymers on the surface of Fe3O4. Preparation of magnetic alginate/Fe3O4 (Alg/Fe3O4) nanocomposite has been successfully synthesized. Alg/Fe3O4 material was synthesized using the coprecipitation method with Fe2+; Fe3+ (with molar ratio 1:2) and alginate 1% as precursors. Synthesized Alg/Fe3O4 nanoparticles were characterized by Fourier Transform Infrared Spectroscopy (FTIR), DelsaTM Nano C Particle Analyzer, Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), and Energy Dispersive Spectroscopy (EDS). The Alg/Fe3O4 has an average diameter of 13.70 nm. Photodegradation test of synthetic methylene blue (MB) dye was found at pH 5.0 and irradiation time under UV245 for 60 minutes. The degradation results showed that the percentage of MB dye removal reached more than 90%.