Miracle-dz/UniFAR-FTUs huggingface dataset:
SPECTROSCOPY OF THE INNER COMPANION OF THE PULSAR PSR J0337+1715

The hierarchical triple system PSR J0337+1715 offers an unprecedented laboratory to study secular evolution of interacting systems and to explore the complicated mass-transfer history that forms millisecond pulsars and helium-core white dwarfs. The latter in particular, however, requires knowledge of the properties of the individual components of the system. Here we present precise optical spectroscopy of the inner companion in the PSR J0337+1715 system. We confirm it as a hot, low-gravity DA white dwarf with Teff = 15, 800 ± 100 K and log10(g) = 5.82 ± 0.05. We also measure an inner mass ratio of 0.1364 ± 0.0015, entirely consistent with that inferred from pulsar timing, and a systemic radial velocity of 29.7 ± 0.3 km s−1. Combined with the mass (0.19751 M☉) determined from pulsar timing, our measurement of the surface gravity implies a radius of 0.091 ± 0.005 R☉; combined further with the effective temperature and extinction, the photometry implies a distance of 1300 ± 80 pc. The high temperature of the companion is somewhat puzzling: with current models, it likely requires a recent period of unstable hydrogen burning, and suggests a surprisingly short lifetime for objects at this phase in their evolution. We discuss the implications of these measurements in the context of understanding the PSR J0337+1715 system, as well as of low-mass white dwarfs in general.
Income Smoothing, Idiosyncratic Risk & CEO Turnover

The article discussed the feasibility from the idiosyncratic risk point of view that CEO enhances the stability of its position by income smoothing. Taking the data of A-share companies listed in Shanghai Stock Exchange and Shenzhen Stock Exchange between 2005 and 2011, the article examined the direct influence of income smoothing upon change of CEO and its indirect influence upon change of CEO by influencing idiosyncratic risks. The article found that the increase of the income smoothing degree would significantly decrease the probability of change of CEO, while the increase of idiosyncratic risks would significantly increase the probability of change of CEO. In addition, the influence of income smoothing upon change of CEO, to a great extent, is realized by influencing idiosyncratic risks. The evidences used in the article show that one of CEO’s major motives to perform income smoothing is to safeguard its position.
Experimental determination of stray capacitances in high frequency transformers

This paper presents practical techniques for determining stray capacitances in a two-winding high frequency transformer for circuit simulation and computer-aided design purposes. These techniques fall into two categories: The two-port network approach; and the step-response approach. The first approach can be employed for high frequency transformer circuit models with the effect of stray capacitances modeled as a /spl pi/-shape network of three lumped stray capacitances. The second approach is useful for the transformer circuit model with the overall effects of stray capacitances modeled as lumped stray-capacitance connected cross the primary side. These techniques have been verified in the modeling and numerical simulation of a 500 W 25 kHz two winding E-core transformer. The merits and limitations of these techniques are also discussed.
Cointegration testing in dependent panels with breaks

In this paper we propose panel cointegration tests allowing for breaks and cross-section dependence based on the Continuos-Path Block bootstrap. Simulation evidence shows that the proposed panel tests have satisfactory size and power properties, hence improving considerably on asymptotic tests applied to individual series. As an empirical illustration we examine investment and saving for a panel of European countries over the 1960-2002 period, finding, contrary to the results of most individual tests, that the hypothesis of a long-run relationship with breaks is compatible with the data
A new type of Wilkinson dual-frequency power divider with symmetrical transmission line stubs

To realize equal power splitting at two arbitrary gigahertz-frequencies, this paper presents a new type of Wilkinson dual frequency power divider, consisting of three-section transmission lines and a series RLC (resistor, inductor and capacitor) circuit. By equating the (ABCD) matrix of the proposed circuit to that of the quarter-wave impedance transformer, coupled with even/odd mode analyses, the design equations of the proposed network are derived. For verification, two dual-frequency power dividers with dual-band operating frequencies at 0.6 GHz and 3.0 GHz, and 3.8 GHz and 10 GHz respectively are designed and simulated. Simulation results show that the dual-band ratio of the proposed power divider can be as large as 5. Comparisons of the simulation results at X-band and S-band with different power dividers indicate that the proposed dual-band power divider performs better under the scenario of the upper operating frequency extending to X-band.
UvA-DARE (Digital Academic Repository) [Review of: G. Kress (2010) Multimodality: a social semiotic approach to contemporary communication

Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva. nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.
What can the SEDs of first hydrostatic core candidates reveal about their nature? (dataset)

This work was supported by the European Research Council under the European Commission’s Seventh Framework Programme (FP7/2007-2013 Grant Agreement No. 339248). The calculations discussed in this paper were performed on the University of Exeter Supercomputer, a DiRAC Facility jointly funded by Science and Technology Facilities Council (STFC), the Large Facilities Capital Fund of Department for Business Innovation & Skills (BIS), and the University of Exeter. This work used the DiRAC Complexity system, operated by the University of Leicester IT Services, which forms part of the STFC DiRAC HPC Facility (www.dirac.ac.uk). This equipment is funded by BIS National E-Infrastructure capital grant ST/K000373/1 and STFC DiRAC Operations grant ST/K0003259/1. DiRAC is part of the National E-Infrastructure. The JCMT has historically been operated by the Joint Astronomy Centre on behalf of the Science and Technology Facilities Council of the United Kingdom, the National Research Council of Canada and the Netherlands Organisation for Scientific Research. Additional funds for the construction of SCUBA-2 were provided by the Canada Foundation for Innovation. Chris Mowat is supported by an STFC studentship. This research has made use of NASA’s Astrophysics Data System. This research used the services of the Canadian Advanced Network for Astronomy Research (CANFAR), which is supported by CANARIE, Compute Canada, University of Victoria, the National Research Council of Canada, and the Canadian Space Agency. This research used the facilities of the Canadian Astronomy Data Centre operated by the National Research Council of Canada with the support of the Canadian Space Agency. Starlink software (Currie et al. 2014) is supported by the East Asian Observatory. MATPLOTLIB is a 2D graphics package used for Python for application development, interactive scripting, and publication-quality image generation across user interfaces and operating systems. This research made use of APLPY (Robitaille & Bressert 2012), an open-source plotting package for Python hosted at http://aplpy.github. com. Herschel is an ESA space observatory with science instruments provided by European-led principal investigator consortia and with important participation from NASA. This research has made use of data from the Herschel Gould Belt survey (HGBS) project (http://gouldbelt-herschel.cea.fr). The HGBS is a Herschel Key Programme jointly carried out by SPIRE Specialist Astronomy Group 3 (SAG 3), scientists of several institutes in the PACS Consortium (CEA Saclay, INAF-IFSI Rome and INAF-Arcetri, KU Leuven, MPIA Heidelberg), and scientists of the Herschel Science Center (HSC).
Toughening poly (trimethylene terephthalate) by maleinized acrylonitrile-butadiene-styrene

Poly (trimethylene terephthalate) was melt-blended with Maleinized acrylonitrile-butadiene-styrene to enhance its toughness without sacrificing comprehensive performance. The advantage of using ABS-g-MAH is due to its high toughness, good processing properties and higher molecular polarity. The phase morphology, mechanical properties, crystallization behaviors, dynamic mechanical behaviors, rheology, spherulites morphology, thermal stability and thermal aging properties were investigated by scanning electron microscopy (SEM), universal tester, differential scanning calorimetry (DSC), dynamic mechanical analyzer (DMA), capillary rheometer, polarized optical microscopy (POM), thermogravimetric analyzer and color-difference meter, respectively. The results suggest that the dimension of the dispersed phase is lower than 1 iÂ­m and the interface between ABS and PTT is unsharp; therefore, ABS is compatible with PTT. With addition of 5%ABS, the yielding strength, breaking strength and impact strength of the blends increase 41.5%, 167% and 200% than those of pure PTT; therefore, ABS can not only greatly toughen PTT but also reinforce PTT to some extent with proper additions. ABS also serves as a nucleating agent for increasing the crystallization rate. The blends show larger storage modulus and higher glass transition temperatures than those of pure PTT.ABS improves the processing property of PTT by increasing the apparent viscosity of the blends. However, the blends of PTT/ABS showdecreased thermal aging resistance of the blends.
Aggregation of Individual Feature Based Similarities and Application to Hierarchical Clustering

The measure of similarity/dissimilarity is important to clustering algorithms. By using different similarity metrics, a clustering algorithm may achieve different clustering results. Many existed clustering methods employ classic distance measures such as the Euclidean and Manhattan distances as the measures of dissimilarity. In this paper, OWA aggregation operators with learned weighting vectors, such as DOWA and kNN-DOWA, are employed to aggregate the feature-based similarities between instances. The aggregated similarities provide more options in classic clustering algorithms and hence, increase their flexibility. The performances of proposed methods are tested in the classic hierarchical clustering. Experimental results shows that the DOWA and kNN-DOWA aggregated similarities have achieves better clustering accuracies than the Euclidean and Manhattan distances in hierarchical clustering.
Practitioner-based research and qualitative interviewing: Using therapeutic skills to enrich research in counselling and psychotherapy

Background: The researcher's reflexive use of self forms part of a well‐established tradition in counselling and psychotherapy research. This paper reviews that tradition briefly, with particular reference to an approach known as ‘practitioner‐based research’ that has developed from it. In this approach, researcher‐practitioners use their therapeutic skills and judgement and thereby enrich their understanding of research participants, themselves and their relationship. Aim: The paper aims to contribute to the practitioner‐based approach by showing how it can impact on data collection, using an example from a qualitative interview. Methodology: A moment of interaction between a participant and a therapy researcher in a qualitative interview is examined, framed within psychotherapeutic intersubjectivity theory. The researcher's reflexive awareness of micro‐aspects of the relationship with the participant is reviewed, captured in their language and the split‐second daydreams or reveries that arose as they interacted. Findings: The authors argue that the approach enhanced this small‐scale study by intensifying the researcher's engagement with the participant and enriching her understanding of their relationship and the subject under investigation. Implications: The paper highlights the unique value and contribution that this approach offers to therapy research and practice.
Using multispectral satellite imagery to estimate leaf area and response to silvicultural treatments in loblolly pine stands

The relationship between leaf area index (LAI) of loblolly pine plantations and the broadband simple ratio (SR) vegetation index calculated from Landsat 7 Enhanced Thematic Mapper Plus (ETM+) data was examined. An equation was derived to estimate LAI from readily available Landsat 7 ETM+ data. The equation developed to predict LAI with Landsat 7 ETM+ data was tested with ground LAI measurements taken in 12 plots. The root mean square er- ror of prediction was 0.29, an error of approximately 14% in prediction. The ability of Landsat 7 ETM+ data to con- sistently estimate SR over time was tested using two scenes acquired on different dates during the winter (December to early March). Comparison between the two images on a pixel-by-pixel basis showed that approximately 96% of the pixels had a difference of <0.5 units of SR (approximately 0.3 units of LAI). When the comparison was made on a stand-by-stand basis (average stand SR), a maximum difference of 0.2 units of SR (approximately 0.12 units of LAI) was found. These results suggest that stand LAI of loblolly pine plantations can be accurately estimated from readily available remote sensing data and provide an opportunity to apply the findings from ecophysiological studies in field plots to forest management decisions at an operational scale. Resume : La relation entre l'indice de surface foliaire de plantations de pin a encens et l'indice de vegetation base sur le rapport simple des bandes larges calcule a partir de donnees provenant du satellite Landsat 7 ETM+ a ete etudiee. Une equation a ete mise au point pour estimer l'indice de surface foliaire a partir de donnees du satellite Landsat 7 ETM+ facilement disponibles. Cette equation a ete testee avec des donnees terrestres d'indice de surface foliaire prove- nant de 12 placettes. La racine carree de l'erreur quadratique moyenne de prediction etait de 0,29, ce qui correspond a une erreur de prediction d'environ 14 %. La capacite du satellite Landsat 7 ETM+ a estimer le rapport simple des ban- des larges de facon consistante dans le temps a ete testee a l'aide de deux scenes prises a differentes dates au cours de l'hiver (de decembre au debut de mars). La comparaison des deux images a l'echelle du pixel a montre qu'environ 96 % des pixels avaient une difference inferieure a 0,5 unite du rapport simple des bandes larges (environ 0,3 unite d'indice de surface foliaire). Lorsque la comparaison etait faite a l'echelle du peuplement (valeur moyenne du rapport simple des bandes larges du peuplement), la difference maximale etait de 0,2 unite du rapport simple des bandes larges (environ 0,12 unite d'indice de surface foliaire). Ces resultats indiquent que l'indice de surface foliaire des plantations de pin a encens peut etre estime avec precision en utilisant des donnees satellitaires facilement disponibles et fournis- sent une occasion d'appliquer les resultats d'etudes ecophysiologiques realisees dans des placettes sur le terrain aux de- cisions d'amenagement forestier a une echelle operationnelle.
Public Investment, Health Infrastructure and Income Growth

Based on individual occupational choice in a model including a production function with public investment and public health infrastructure, this paper presents an examination of how allocation of public investment and public health infrastructure affects the dynamics of income. Individuals work as skilled laborers or unskilled laborers, as in the model described by Caselli (1999), and educational costs are necessary to work as a skilled laborer. Results show that government should provide both public investment and public health infrastructure to escape from the poverty trap with low income. Moreover, based on an initial allocation between public investment and public health infrastructure, it is decided how the government should form a policy to increase income growth.
Sol-gel bioceramic material from bentonite clay

Bioceramic material of the quaternary system; SiO2- CaO-Na2O-P2O5 that has composition similar to Bio- glass? 45S5 was prepared by the sol-gel method from locally obtained bentonite clay (BTC). The monolith obtained was sintered at 1000? C for 2 h to facilitate densification and phase transformation. X-ray diffraction (XRD) analysis revealed the presence of sodium calcium silicate, Na2Ca2Si3O9 as major crystal phase, and another secondary orthorhombic phase, NaCaPO4. Fourier transform infrared (FTIR) spectroscopic investigation confirmed the presence of Si-O-Si bonds and a crystalline phosphate in the glass network. Scanning electron microscopy (SEM) revealed a network of micropores and interconnected macropores. Overall, the material displays features amenable for possible utilization in tissue engineering scaffolds.
Raman Studies of Corrosion Layers Formed on Archaeological Irons in Various Media

The description and identification of corrosion products formed on archaeological iron artefacts need various approaches at different observation scales. Among analytical techniques available to document phase structure at the microscopic range, Raman spectroscopy offers sensitivity and discrimination between iron corrosion products with an easy implementation. Results obtained for iron artefacts corrosion in soils and atmosphere are presented. Corrosion forms observed for anoxic and aerated soils on one hand and indoor atmosphere on the other are documented. Beyond the identification and organisation of corrosion products through hyperspectral imaging, Raman micro-spectroscopy could also provide quantitative phase proportions which will be needed in the proposition of reactivity diagnosis indicators.
Tinbergen Institute The Tinbergen Institute is the institute for economic research of the Erasmus Universiteit

One of the main findings of a large body of gift exchange experiments is that in an incomplete contracts environment workers on average do not shirk and usually provide more than the minimum enforceable effort level. In general, 40 to 60 percent of the workers reward higher wages with higher effort. These results are observed for simple one-employer − one-worker relationships. In this paper we investigate whether they generalize to the more realistic situation in which the employer employs several workers. We compare a bilateral gift exchange game with a treatment in which each employer has four workers. We find that effort levels in the latter treatment are only marginally lower. Gift exchange thus appears to be robust to increases in the size of the workforce and intention-based reciprocity rather than social preferences seems to be the main driving force behind gift exchange. 1 We thank Hessel Oosterbeek for his help in designing this study and Robert Dur and Arno Riedl for valuable comments. An earlier version of this paper was presented at the ESA 2004 conference in Amsterdam.
Polymerase Chain Reaction: Types, Utilities and Limitations

Patricia Hernandez-Rodriguez1 and Arlen Gomez Ramirez2 1Molecular Biology and Immunogenetics Research Group (BIOMIGEN), Animal Medicine and Reproduction Research Center (CIMRA), Department of Basic Sciences, Biology Program, Universidad de La Salle, Bogota 2Faculty of Agricultural Sciences, Veterinary Medicine Program, Animal Medicine and Reproduction Research Center (CIMRA), Universidad de La Salle, Bogota Colombia
Extractive ion- pair spectrophotometric assay of quinine

Quality control and assurance of antimalarials is vital in malaria treatment success. This research developed an extractive spectrophotometric method for routine assay of quinine, for enhanced quality control and assurance. The developed method is based on the formation of coloured ion-pair complex between quinine and bromocresol green in phthalate buffer, pH 5. The ion-pair was extracted into chloroform and re-extracted into 0.1M sodium hydroxide. The 0.1M sodium hydroxide extract was determined at 620nm. Relevant method validation requirements were determined, in line with International Standards Requirements. The ion-pair extract stoichiometry was 1:1. Beer's law was obeyed in the concentration range of 1-50 x 10-4 M, with good linearity (R> 0.99). The extract showed good stability over 48 hours. A good accuracy was obtained from recovery studies in standard solutions, in the presence of common excipients, in tablets and suspension. The developed method complied with International Standards Requirements for analytical method development. The recovery data of the developed method were not statistically different from recovery data obtained using non-aqueous titration. The developed method was successfully applied in the determination of quinine in bulk drug, tablets and suspension. No significant interference was observed from excipients commonly used as pharmaceutical aids with the developed method.
Voxels: volume-enclosing microstructures

This paper presents results on the development and fabrication of hollow 3D, programmable-volume, micro-scale, artificial, non-biological volume cells or voxels. The standardized silicon wafer processing method PolyMUMPs® was used to construct a variety of polysilicon devices capable of being folded from two-dimensional shapes into three-dimensional regular solids with dimensions in the order of 40–80 µm per side. Folding of the devices was performed by a combination of magnetic and surface tension forces in water. Complete closure of pyramidal structures with dimensions down to 40 µm per side was achieved, as well as folding of five-sided boxes and half-dodecahedrons (lotuses) with dimensions down to 40 µm per side.
Static Analysis Based Behavioral API for Malware Detection using Markov Chain

Researchers employ behavior based malware detection models that depend on API tracking and analyzing features to identify suspected PE applications. Those malware behavior models become more efficient than the signature based malware detection systems for detecting unknown malwares. This is because a simple polymorphic or metamorphic malware can defeat signature based detection systems easily. The growing number of computer malwares and the detection of malware have been the concern for security researchers for a large period of time. The use of logic formulae to model the malware behaviors is one of the most encouraging recent developments in malware research, which provides alternatives to classic virus detection methods. To address the limitation of traditional AVs, we proposed a virus detection system based on extracting Application Program Interface (API) calls from virus behaviors. The proposed research uses static analysis of behavior-based detection mechanism without executing of software to detect viruses at user mod by using Markov Chain. Keywords: Malware Detection; Markov Chain; Virus Behavior; API Calls