bluuebunny/crossref_metadata_2025_split huggingface dataset:
Existence of Prograde Double-Double Orbits in the Equal-Mass Four-Body Problem
Authors: Kuang Wentian , Yan Duokui 
Published: April 2018

Abstract
By introducing simple topological constraints and applying a binary decomposition method, we show the existence of a set of prograde double-double orbits for any rotation angle

θ
∈

(
0
,

π
/
7

]

{\theta\in(0,\pi/7]}

in the equal-mass four-body problem. A new geometric argument is introduced to show that for any

θ
∈

(
0
,

π
/
2

)

{\theta\in(0,\pi/2)}

, the action of the minimizer corresponding to the prograde double-double orbit is strictly greater than the action of the minimizer corresponding to the retrograde double-double orbit. This geometric argument can also be applied to study orbits in the planar three-body problem, such as the retrograde orbits, the prograde orbits, the Schubart orbit and the Hénon orbit.
A k-Inflated Negative Binomial Mixture Regression Model: Application to Rate–Making Systems
Authors: Payandeh Najafabadi Amir T. , MohammadPour Saeed 
Published: April 2018

Abstract
This article introduces a k-Inflated Negative Binomial mixture distribution/regression model as a more flexible alternative to zero-inflated Poisson distribution/regression model. An EM algorithm has been employed to estimate the model’s parameters. Then, such new model along with a Pareto mixture model have employed to design an optimal rate–making system. Namely, this article employs number/size of reported claims of Iranian third party insurance dataset. Then, it employs the k-Inflated Negative Binomial mixture distribution/regression model as well as other well developed counting models along with a Pareto mixture model to model frequency/severity of reported claims in Iranian third party insurance dataset. Such numerical illustration shows that: (1) the k-Inflated Negative Binomial mixture models provide more fair rate/pure premiums for policyholders under a rate–making system; and (2) in the situation that number of reported claims uniformly distributed in past experience of a policyholder (for instance

k
1

=
1

$k_1=1$

and

k
2

=
1

$k_2=1$

instead of

k
1

=
0

$k_1=0$

and

k
2

=
2

$k_2=2$

). The rate/pure premium under the k-Inflated Negative Binomial mixture models are more appealing and acceptable.
The Importance of Environmental, Social, and Governance Risks to Surety Underwriters
Authors: Shea Matthew , Hutchin James W. 
Published: April 2018

Abstract
Launched in 2012, the Principles for Sustainable Insurance serve as a global framework for the insurance industry to address environmental, social, and governance risks and opportunities. This report presents the findings of an exploratory study looking at the influence of environmental, social, and governance (ESG) risks on surety underwriting. Our findings come from a global survey of the insurance industry that sought to understand whether and how insurance and reinsurance companies are integrating ESG risks into the surety underwriting of infrastructure projects.
“One Has To Be So Terribly Religious To Be An Artist”: Divine Inspiration and theophilia in Aelius Aristides’ Hieroi Logoi
Authors: Petridou Georgia 
Published: April 2018

Abstract:This paper deals with the close link between divine epiphany and artistic inspiration in the life and work of one of the most renowned rhetoricians of the second century AD, Aelius Aristides. The argument in a nutshell is that when Aristides lays emphasis on the divinely ordained character of the Hieroi Logoi, in particular, and his literary and rhetorical composition, in general, he taps into a rich battery of traditional theophilic ideas and narratives (oral and written alike). These narratives accounted for the interaction of divine literary patrons and matrons with privileged members of the intellectual elite to provide thematic or stylistic guidance to their artistic enterprises. Thus, Aristides makes wider claims about his own status of theophilia (lit. ‘the state of being dear to the gods’), a status that was much-praised and much-prized in the Graeco-Roman world, and one that functioned as a status-elevating mechanism in the eyes of both his contemporaries and posterity. Furthermore and on a different level, he also utilizes his theophilic aspirations to elevate his prose-hymns (a genre he invented) to the higher and already established level of encomiastic poetry, which Greeks regarded for centuries as fit for the ears of the gods.
New observations and asteroseismic analysis of the subdwarf B pulsator PG 1219+534
Authors: Van Grootel Valérie , Péters Marie-Julie , Green Elizabeth M. , Charpinet Stéphane , Brassard Pierre , Fontaine Gilles 
Published: April 2018

Abstract
We present a new asteroseismic modeling of the hot B subdwarf (sdB) pulsator PG 1219+534, based on a 3- month campaign with the Mont4K/Kuiper combination at Mt Bigelow (Arizona) and on updated atmospheric parameters from high S/N low and medium resolution spectroscopy. On the basis of the nine independent pulsation periods extracted from the photometric light curve, we carried out an astroseismic analysis by applying the forward modeling approach using our latest (third and fourth generation) sdB models. Atmospheric parameters (Teff = 34 258 ± 170 K, log g = 5.838 ± 0.030) were used as independent constraints, as well as partial mode identification based on observed multiplet structures we ascribed to stellar rotation. The optimal model found is remarkably consistent between various analyses with third and fourth generation of sdB models, and also with previously published analysis with second generation sdB models. It corresponds to a sdB with a canonical mass (0.46 ± 0.02 M⊙), rather thin H-He envelope (log q(envl) = −3.75 ± 0.12), and close to He-burning exhaustion (Xcore(C + O) = 0.86 ± 0.05).We also investigate the internal rotation of the star.We find that PG 1219+534 rotates very slowly (Prot = 34.91 ± 0.84 days) and that solid-body rotation is reached at least down to ∼60% of the radius.
Comparative Analysis of Savers and Non-Savers among Tomato Farmers in Ghana
Authors: Aidoo-Mensah Daniel 
Published: April 2018

Abstract
The study sought to examine the differences between savers and non-savers among a cross-section of 562 farmers randomly selected from six districts in three regions (Ashanti, Brong Ahafo and Upper East) of Ghana. By means of descriptive statistics in the form of frequencies and percentages, the study segregated the respondents into savers and non-savers and Kendall coefficient of concordance was employed to identify the motives of saving among savers and non-saving among non-savers. In order to test whether savers and non-savers differ in relationship to some key socio-economic demographic characteristics, a series of Pearson’s Chi-tests for independence were employed. Finally, by the application of economic-psychology theory on financial savings through binary logistic regression, the study examined empirical differences between savers and non-savers. The study found out that in terms of a key economic variable, that is, income generated from tomato production, savers tend not to differ from non-savers. The issue then is since savers are faced with similar economic challenges relating to their income generating activities, but still manages to save, then the differences between savers and non-saver go beyond economic reasons. Thus, the distinction between saving and non-saving which is underlined by psychological traits have been found to be mainly behavioural and demographic in nature conveying the idea that rural households themselves have a significant part to play with regards to forming, improving and maintaining their savings habits.
An in Situ Crystal Growth of Metal Organic Frameworks-5 on Electrospun PVA Nanofibers
Authors: Talmoudi Hanen , Khenoussi Nabyl , Adolphe Dominique , Said Ayoub Haj , Schacher Laurence 
Published: April 2018

Abstract
In this study, a simple, general and straightforward method for growing metal-organic frameworks (MOFs) crystals directly on nanofibers is presented. A chelating polymer was first blent with metal cation and then electrospun. The obtained nanofibers were immersed in a linker solution. Metal cations were released and the metal-organic frameworks crystals were grown on the fibers’ surface. In this work, this method was tested with polyvinyl alcohol as chelating polymer, Zn2+ as metal cation and Terephthalic acid as linker. The pair cation/linker corresponds to the MOF-5. The latter is a robust metal organic framework formed from Zn4O nodes with 1,4-benzodicarboxylic acid struts between the nodes. SEM images revealed that the MOF-5 nanocrystals have grown along the PVA/Zn2+ nanofibers that served as the crystals’ growth template by providing the Zn2+ ions. This result was also confirmed by infrared spectroscopy, which indicates the presence of characteristic bands of MOF-5 in the modified nanofibers spectrum. Moreover, the X-ray diffraction showed that MOF-5 material was well crystallized on the nanofibers surface according to a cubic symmetry with a space group Fm-3m and a lattice constant a = 25.8849 Å.
Invariant observer design for scan matching-aided localization: A tutorial
Authors: Barczyk Martin 
Published: April 2018

Abstract
Aided localization, a nonlinear observer design problem, is critical to a range of mobile robotics applications. This
paper provides a tutorial presentation of the required background, design steps and calculations of a scan matching-aided
localization observer using the novel invariant (symmetry-preserving) observer design methodology. The Invariant Extended
Kalman Filter approach is used to systematically obtain the gains of the resulting design, and compared against
a conventional, non-invariant Extended Kalman Filter design.
From acceleration-based semi-active vibration reduction control to functional observer design
Authors: Wang Yebin , Utsunomiya Kenji 
Published: April 2018

Abstract
This work investigates a functional estimation problem for single input single output linear and nonlinear systems, motivated by its enabling role in acceleration-based semi-active control. Solvability of a linear functional estimation problem is studied from a geometric approach, where the functional dynamics are derived, decomposed, and transformed to expose structural properties. This approach is extended to solve a challenging nonlinear functional observer problem, combining with the exact error linearization. Existence conditions of nonlinear functional observers are established. Simulation verifies existence conditions and demonstrates the effectiveness of the proposed functional observer designs.
Observer design for monocular visual inertial SLAM
Authors: Fink Geoff , Franke Mirko , Lynch Alan F. , Röbenack Klaus 
Published: April 2018

Abstract
This paper examines the state estimation problem for unmanned aerial vehicles when commonly used positioning systems such as the global positioning system or indoor motion capture systems are unavailable. The proposed method uses inertial sensor measurements along with scaled position measurements from an onboard computer vision system which implements visual simultaneous localization and mapping. A state transformation puts the system into a linear time-varying form which simplifies observability analysis and allows for an observer design with sufficient conditions for convergence. The proposed design is validated by simulation.
Early effect of thalamotomy on cognitive function in patients with Parkinson’s disease
Authors: Gorzelańczyk Edward J. , Ackermann-Szulgit Dorota , Kunc Marek , Harat Marek , Walecki Piotr 
Published: April 2018

Abstract
Thalamotomy is a neurosurgical procedure used in the treatment of advanced Parkinson’s disease (PD). The aim of our research is to evaluate the early impact of a lesion in the ventrointermedial nucleus (VIM) of the thalamus on cognitive and motor function in people with PD. Sixty patients who qualified for right- or left-sided VIM thalamotomy were involved in the study. The cognitive and motor functions of each patient were assessed both prior to and following the surgical procedure. Twenty-nine PD patients without ablative treatment were qualified for the comparison group, and 57 neurologically healthy individuals were assigned to the control group. The following tests were carried out: Mini Mental State Examination, Benton Visual Retention Test, Stroop Color and Word Test, Trail Making Test A&B, and Rey Auditory Verbal Learning Test. Statistically significant differences were found in reaction time, visual-spatial working memory, auditory-verbal memory, and overall level of cognitive function when comparing the results of tests carried out before and after thalamotomy and when comparing patients who had undergone surgery with untreated or healthy individuals. In patients with right-sided and left-sided thalamotomy differences were also found in the mean number of perseverative errors and recalled words.
Kollaborationsplattform im FID Soziologie: Erhöhung der Erreichbarkeit, Sichtbarkeit und Nachhaltigkeit
Authors: Schaible Johann 
Published: April 2018

Zusammenfassung
Webbasierte Informations- und Kommunikationssysteme erweitern einer wissenschaftlichen Community Zugriffsmöglichkeiten auf wissenschaftliche Informationen, z. B. Publikationen oder Forschungsdaten, sowie Austauschmöglichkeiten mit anderen Wissenschaftlerinnen und Wissenschaftlern. Der Fachinformationsdienst (FID) Soziologie hat sich zur Aufgabe gemacht, solch eine Informations- und Kommunikationsinfrastruktur innerhalb der Soziologie zu realisieren. Hierzu wird eine vereinfachte Herangehensweise konzipiert, um eigene Publikationen Open-Access verfügbar zu machen, eine integrierte Suche über mehrere Datenbestände realisiert sowie ein akademisches Netzwerk für eine erleichterte Interaktion zwischen Mitgliedern der Fachcommunity entwickelt.
Know how to do better Know-how
Authors: Flämig Benjamin 
Published: April 2018

ZusammenfassungDie Sicherung von Erfahrungswissen stellt in Unternehmen eine große Herausforderung dar. Wissensmanagementsysteme decken mit ihrem Fokus auf explizite Wissensformen aber oft nur einen Bruchteil dessen ab, was „echtes“ Wissensmanagement eigentlich zu organisieren beabsichtigt. Ein System zu etablieren, welches mit beiden Wissensformen umzugehen vermag, war Ziel des dargelegten Projektes. Zugleich soll die häufig geführte Debatte, Bibliothekare seien wohlmöglich die „besseren“ Wissensmanager, um einen praktischen Antwortversuch bereichert werden.
The Dutch Approach to Achieving Open Access
Authors: Heijne Maria A. M. , van Wezenbeek Wilma J. S. M. 
Published: April 2018

AbstractIn this paper, the authors – both of whom are library directors and involved in the contract negotiations with the bigger scientific publishers – present the conditions that formed the Dutch approach in these negotiations. A combination of clear political support, a powerful delegation, a unique bargaining model and fidelity to their principles geared the Dutch to their success in achieving open access. The authors put these joint license and open access negotiations in the perspective of open science and show that they are part of the transition towards open access.
Die Habsburg-Lothringische Familien-Fideikommissbibliothek vom Tod Kaiser Franz I. 1835 bis zu ihrer Eingliederung in die Nationalbibliothek der Republik Österreich 1921
Authors: Knieling Nina , Huber-Frischeis Thomas , Valenta Rainer , Petschar Hans 
Published: April 2018

Zusammenfassung
Im Rahmen eines Projekts des Österreichischen Fonds zur Förderung der wissenschaftlichen Forschung wird die Geschichte der Familien-Fideikommissbibliothek des Hauses Habsburg-Lothringen aufgearbeitet, deren Bestände sich größtenteils in ihrer historischen Aufstellung noch heute in der Österreichischen Nationalbibliothek befinden. Der vorliegende Artikel gibt über Forschungsschwerpunkte und bisher vorliegende Projektergebnisse Auskunft.
Vornweg statt hinterher
Authors: Waldschmidt-Dietz Frank 
Published: April 2018

Zusammenfassung
Die Digitalisierung führt zu einem fundamentalen Wandel auch in Lehr-/Lernkontexten. Bibliotheken können hier selbst gestaltend agieren, indem sie eigene, innovative Angebote machen. Das Konzept des Bedürfnisorientierten Lern-Designs (BoLD) hilft auf Basis von Nutzerbedürfnissen, der Analyse vorhandener Lehrangebote und technischer Möglichkeiten, neue Angebote zu kreieren. Es resultiert ein informationelles Ökosystem, welches gleichermaßen aus analogen und digitalen Ressourcen besteht. So werden individuelle Lernwege möglich.
Informationskompetenz online: Mit lebendigen Webinaren neue Zielgruppen individuell ansprechen
Authors: Faidt Christine , Grahl Tina 
Published: April 2018

Zusammenfassung
Mit Webinaren und Online-Beratung können Bibliotheken ihr Service-Portfolio erweitern und an die Bedürfnisse von neuen Zielgruppen, insbesondere nicht-traditionellen Studierenden, anpassen. Bereits vorhandene Präsenzkonzepte lassen sich mit wenig Aufwand didaktisch aufbereiten und in die digitale Welt überführen. Die Online-Angebote vermitteln den Teilnehmenden neben Inhalten auch digitale Kompetenzen und tragen außerdem zur erfolgreichen Positionierung der Bibliothek im virtuellen Raum bei.
Serum sTREM-1, PCT, CRP, Lac as biomarkers for death risk within 28 days in patients with severe sepsis
Authors: Zhang Lefeng , Zhang Xiaohong 
Published: April 2018

AbstractThis study was undertaken to evaluate the clinical efficacy of serum soluble triggering receptors expressed by myeloid cell-1 (sTREM-1), procalcitonin (PCT), C-reactive protein (CRP) and lactic acid (Lac) as biomarkers for death risk within 28 days in patients with severe sepsis. Fifty-one cases of severe sepsis from the department of ICU in Lishui People’s Hospital from May 2013 to February 2017 were retrospectively analyzed. These cases were divided into survival (n=39) and death (n=12) groups based on the outcome within 28 days of treatment. Serum levels of sTREM-1, PCT, CRP and Lac were measured on the day of admission and compared between the survival and death groups. And the death prediction value within 28 days were evaluated according to serum sTREM-1, PCT, CRP and Lac. The serum level of TREM-1 and Lac were 128.70±46.10 pg/mL, 7.02±1.56 mmol/L for the death group and 83.69±26.57 pg/mL 4.44±0.45 mmol/L for survival group. The serum levels of sTREM-1 and Lac in death group were significantly higher than those of survival group (p<0.05). However, the serum PCT and CRP between the survival and death group were not statistically different (p>0.05). The death prediction sensitivity, specificity and AUC within 28 days were high for serum sTREM-1 (75.00%, 77.78%, 0.79) and APACHEII (74.89%, 84.62%, 0.84). However, the prediction value of serum level PCT, CRP and Lac were relatively low. A significant positive correlation was found between serum sTREM-1 and APACHEII score rpearson =0.54, (p<0.001). However, no such correlation was observed between serum CRP, Lac and APACHEII scores (p>0.05).ConclusionSerum sTREM-1 was significantly elevated in sepsis patients who died within 28 days of admission, suggesting that this test could be a potential biomarker for severe sepsis patients, and also be used for prognostic evaluation.
Efficacy of Danhong injection on serum concentration of TNF-α, IL-6 and NF-κB in rats with intracerebral hemorrhage
Authors: Peng Chen , Duan Shibo , Gang Lou 
Published: April 2018

AbstractObjectiveTo investigate the efficacy of Danhong injection on the serum concentration of tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6) and nuclear factor kappa-light-chain-enhancer of activated B (NF-κB) in rats with intracerebral hemorrhage (ICH) and evaluate its therapeutic effects on inflammation and cerebral edema.MethodsSixty male Wistar rats were randomly divided into control, model and Danhong groups with 25 rats in each group. Intracerebral injection of autologous arterial blood was performed on model and Danhong groups in order to establish intracerebral hemorrhage model. Rats in the control group were given the same operation procedure without blood injection. After successfully establishing the intracerebral hemorrhage model, the rats were given Danhong (2ml/kg/d) through intraperitoneal injection. Rats in the control and model groups were given the same amount of normal saline respectively. The brain water content (BWC) and serum level of TNF-α, IL-6 and NF-κB were measured in all groups at the time points of day 1, 3, 5, 7 and 9.ResultsThe neurological deficit score (NDS) were not statistical different in days 1, 3 and 5 between the model and Danhong group (P>0.05); However, on day 7 and 9 after modeling, the NDS in the Danhong group was significant lower than that of the Model group (P<0.05). The brain water content in the model and Danhong groups were significantly elevated compared to control group (P<0.05). The brain water content was significant elevated after modeling in the model and Danhong groups on day 3 and gradually decreased over the next 6 days.The brain water content was significantly higher in the model group for days 3 to 9 compared to the Danhong group (P<0.05). Compared to the model group, the serum NF-κb was significantly lower in the Danhong group for the time point of day 3 and 5 (P<0.05); However, compared to the model group, the serum TNF-α and IL-6 levels in the Danhong group were significantly lower for each time point (P<0.05). Conclusion Danhong injection can reduce cerebral edema in rats with cerebral hemorrhage, and protect the brain nerve function. These effects may be related to its function of regulating serum TNF-α, NF-κB and IL-6 expression.
Simulation of personalised haemodynamics by various mounting positions of a prosthetic valve using computational fluid dynamics
Authors: Bongert Markus , Geller Marius , Pennekamp Werner , Nicolas Volkmar 
Published: April 2018

Abstract
Diseases of the cardiovascular system account for nearly 42% of all deaths in the European Union. In Germany, approximately 12,000 patients receive surgical replacement of the aortic valve due to heart valve disease alone each year. A three-dimensional (3D) numerical model based on patient-specific anatomy derived from four-dimensional (4D) magnetic resonance imaging (MRI) data was developed to investigate preoperatively the flow-induced impact of mounting positions of aortic prosthetic valves to select the best orientation for individual patients. Systematic steady-state analysis of blood flow for different rotational mounting positions of the valve is only possible using a virtual patient model. A maximum velocity of 1 m/s was used as an inlet boundary condition, because the opening angle of the valve is at its largest at this velocity. For a comparative serial examination, it is important to define the standardised general requirements to avoid impacts other than the rotated implantation of the prosthetic aortic valve. In this study, a uniform velocity profile at the inlet for the inflow of the aortic valve and the real aortic anatomy were chosen for all simulations. An iterative process, with the weighted parameters flow resistance (1), shear stress (2) and velocity (3), was necessary to determine the best rotated orientation. Blood flow was optimal at a 45° rotation from the standard implantation orientation, which will offer a supply to the coronary arteries.