bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Variability Study of Long-term Optical Data of OJ 287
Authors: Liu Y. , Fan J. H. , Wang H. G. , Deng G. G. 
Published: February 2013

AbstractIn this paper, we investigated the possible exponential decays in the long term optical light curve of the BL Lac {OJ 287}. We developed a method that can be used to decomposing a light curve into a linear combination of exponential decays. The decomposing shows that the decay time scales range from ~ 103.6 to ~ 10−4 days. The power spectra has frequency-dependent power-law with slop ~ 0.5, and the peak of power is at the time scale of decay on ~ 160 days.
The sample of FBS cataclysmic variables
Authors: Mickaelian Areg M. , Sinamyan Parandzem K. 
Published: February 2013

The First Byurakan Survey (FBS) was conducted by Markarian et al. (1989) to reveal UV-excess galaxies. However, many other interesting objects were possible to detect based on its low-dispersion spectra, and the Second part of the FBS (Mickaelian 2008) was carried out later to reveal UV-excess stellar (point-like) objects, such as white dwarfs (WD), hot subdwarfs, cataclysmic variables (CV), HBB stars, as well as QSOs and Seyfert galaxies. In addition, the FBS plates were digitized (DFBS, Digitized First Byurakan Survey; Mickaelian et al. 2007) and the extraction and reduction of spectra allowed selection of objects with higher confidence and to fainter magnitudes.Spectroscopic observations have been carried out with three telescopes (Byurakan Astrophysical Observatory BAO-2.6m, Russian Special Astrophysical Observatory SAO-6m and Observatoire de Haute Provence OHP-1.93m) (Sinamyan & Mickaelian 2009) for classification of objects. The spectral features of CVs are narrow emission lines (Balmer series, HeI and HeII lines and Bowen band at 4640A) (Fig. 1). In addition, we use the NSVS database (Wozniak et al. 2004) for revealing variability and our method of comparison of POSS1 and POSS2 epoch photometric data (Mickaelian et al. 2011) based on accurate calculations of weighted average POSS1 and POSS2 magnitudes. 27 objects are present in the NSVS and light curves are available (Fig 2.). X-ray data may serve as an additional criterion to detect CVs among the FBS blue stellar objects (Voges et al. 1999; 2000).The subsample of FBS WDs has already been published (Sinamyan & Mickaelian 2011), where some CVs are also present. The subsample of FBS CVs consists of 38 objects, including the following types: dwarf novae (DN; UG and SU subtypes; 7 objects), nova-like variables (NL; SH, AC, VY subtypes; 11 objects), as well as there is a DQ Her type object (FBS 1140+719), a Helium CV (HeCV; FBS 1232+379), and a Low-mass X-ray Binary (LMXB; FBS 1656+354). Other objects do not have accurate classification because of the lack of photometric data. The Periods are in the range of 0.012 to 0.343 days.To make a complete study of these objects possible, multiwavelength (MW) data were retrieved for these 38 objects, including X-ray (ROSAT BSC and FSC), UV (GALEX), optical (APM, MAPS, USNO-B1.0, GSC 2.3.2, SDSS), and IR (2MASS, WISE, IRAS, AKARI) and MW SEDs were built. For CVs, MW SEDs have some disadvantage as their variability does not allow to have their accurate energy distribution. Diagrams with relations between MW data-points and some other physical parameters were also built.
The SED Machine: A Spectrograph to Efficiently Classify Transient Events Discovered by PTF
Authors: Ngeow Chow-Choong , Konidaris Nick , Quimby Robert , Ritter Andreas , Rudy Alexander R. , Lin Edward , Ben-Ami Sagi 
Published: February 2013

AbstractThe Palomar Transient Factory (PTF) is a project aimed to discover transients in the Universe, including Type Ia supernovae, core-collapse supernovae, and other exotic and rare transient events. PTF utilizes the Palomar 48-inch Telescope (P48) for discovering the transients, and follow-up mainly by the Palomar 60-inch Telescope (P60, for photometric light and color curves), as well as other telescopes. The discovery rate of PTF is about 7000 candidate transients per year, but currently only about 10% of the candidates are being followed-up and classified. To overcome this shortcoming, a dedicated spectrograph, called the SED Machine, is being designed and built at the California Institute of Technology for the P60 Telescope, aiming to maximize the classification efficiency of transients discovered by PTF. The SED Machine is a low resolution (R ~ 100) IFU spectrograph. It consists of a rainbow camera for spectrophotometric calibration, and a lenslet array plus 3-prism optics system for integrated field spectra. An overview of the science and design of the SED Machine is presented here.
Changes in Cyclotron line energy with luminosity in Accreting X-ray pulsars
Authors: Nishimura Osamu 
Published: February 2013

AbstractI model changes in cyclotron line energy with luminosity, considering the effect of polar cap dimensions and changes in beam pattern as well as shock height. Cyclotron lines are calculated by a superposition of a large number of cyclotron lines formed in different heights of an accretion column. Cyclotron line energy has been observed to change with luminosity in a number of accreting X-ray pulsars. In X0115+63 and V0332+53, the fundamental cyclotron line energy has been observed to decrease with increasing luminosity. This phenomenon has been interpreted as a change in shock height with luminosity. However, the rate of the change seems to be very different, in which the line energy in V0332+53 seems to vary slowly with luminosity compared with that in X0115+63. I found that the changes in the cyclotron line energies with luminosity can be explained by changes in beam pattern and the size of a polar cap rather than a shock height.
Origin of Radio Emission from Nonthermal Electrons in ADAF for LLAGNs
Authors: Liu H. , Wu Q. W. 
Published: February 2013

AbstractWe explore the origin of the radio emission from the low-luminosity active galactic nuclei (LLAGNs), by investigating the ADAF model with a hybrid of thermal and nonthermal electrons. We find that the radio emission of LLAGNs is severely underpredicted by pure ADAF model, and can be naturally explained by the ADAF model with a hybrid electron population. Our model can roughly reproduce the anti-correlation between the mass-corrected radio loudness and the Eddington ratio for the LLAGNs. We further model the SEDs of each source, and find that roughly all sources can be well fitted if a small fraction of the steady state electron energy is ejected into the nonthermal electrons.
Spectrum and timing phenomena in IGR J17091-3624 2011 outburst
Authors: Zhang Z. , Qu J. L. , Gao H. Q. , Zhou J. N. 
Published: February 2013

AbstractX-ray source IGR J17091-3624 was discovered by INTEGRAL observatory on 2003 April (Kuulkers 2003). A outburst was detected with Swift/Burst Alert Telescope (BAT) in late January 2011 (Krimm 2011). IGR J17091-3624 has a similar timing phenomena to microquasar GRS 1915+105(Belloni 2000; Altamirano 2011). We have analyzed the evolution of temporal and spectral characteristic of IGR J17091-3624 during the 2011 outburst. We find that (1) all the QPOs can be divided into two types, QPO-AB and QPO-C, (2) a small outburst tracks clockwise in the HID, (3) the relationship between hardness and disk color temperature forms a V-shape. Those results will give a strong constraint on the disk radiative process.
Avoiding another directive: the unstable politics of European Union cross-border health care law
Authors: Greer Scott L. 
Published: February 2013

AbstractThe European Union's (EU) 2011 Directive on cross-border patient mobility codifies the right of any EU citizen to travel abroad for treatment and be reimbursed on the same terms as they would be at home. Governments hoped it would end the string of court cases that had reshaped EU health law but this article argues that it is likely to produce yet more judicial challenges. Patient mobility is an attractive idea with unclear definitions and divergent implementation. In many cases, providers, insurers and governments will not communicate and leave the patient with a bill – almost daring the patient to sue, and the courts to make more policy. Governments should try to prevent this by investing in coordination and alternative redress for patients who might otherwise sue.
Pseudomonas fluorescens NZI7 repels grazing by C. elegans, a natural predator
Authors: Burlinson Peter , Studholme David , Cambray-Young Joanna , Heavens Darren , Rathjen John , Hodgkin Jonathan , Preston Gail M 
Published: February 2013

Abstract
The bacteriovorous nematode Caenorhabditis elegans has been used to investigate many aspects of animal biology, including interactions with pathogenic bacteria. However, studies examining C. elegans interactions with bacteria isolated from environments in which it is found naturally are relatively scarce. C. elegans is frequently associated with cultivation of the edible mushroom Agaricus bisporus, and has been reported to increase the severity of bacterial blotch of mushrooms, a disease caused by bacteria from the Pseudomonas fluorescens complex. We observed that pseudomonads isolated from mushroom farms showed differential resistance to nematode predation. Under nutrient poor conditions, in which most pseudomonads were consumed, the mushroom pathogenic isolate P. fluorescens NZI7 was able to repel C. elegans without causing nematode death. A draft genome sequence of NZI7 showed it to be related to the biocontrol strain P. protegens Pf-5. To identify the genetic basis of nematode repellence in NZI7, we developed a grid-based screen for mutants that lacked the ability to repel C. elegans. The mutants isolated in this screen included strains with insertions in the global regulator GacS and in a previously undescribed GacS-regulated gene cluster, ‘EDB’ (‘edible’). Our results suggest that the product of the EDB cluster is a poorly diffusible or cell-associated factor that acts together with other features of NZI7 to provide a novel mechanism to deter nematode grazing. As nematodes interact with NZI7 colonies before being repelled, the EDB factor may enable NZI7 to come into contact with and be disseminated by C. elegans without being subject to intensive predation.
Planform: an application and database of graph-encoded planarian regenerative experiments
Authors: Lobo Daniel , Malone Taylor J. , Levin Michael 
Published: February 2013

Abstract
Summary: Understanding the mechanisms governing the regeneration capabilities of many organisms is a fundamental interest in biology and medicine. An ever-increasing number of manipulation and molecular experiments are attempting to discover a comprehensive model for regeneration, with the planarian flatworm being one of the most important model species. Despite much effort, no comprehensive, constructive, mechanistic models exist yet, and it is now clear that computational tools are needed to mine this huge dataset. However, until now, there is no database of regenerative experiments, and the current genotype–phenotype ontologies and databases are based on textual descriptions, which are not understandable by computers. To overcome these difficulties, we present here Planform (Planarian formalization), a manually curated database and software tool for planarian regenerative experiments, based on a mathematical graph formalism. The database contains more than a thousand experiments from the main publications in the planarian literature. The software tool provides the user with a graphical interface to easily interact with and mine the database. The presented system is a valuable resource for the regeneration community and, more importantly, will pave the way for the application of novel artificial intelligence tools to extract knowledge from this dataset.
Availability: The database and software tool are freely available at http://planform.daniel-lobo.com.
Contact: michael.levin@tufts.edu
Bringing interlibrary loan services under a single sign‐on umbrella
Authors: Derek Halling T. , Hahn Douglas C. 
Published: February 2013

PurposeThe purpose of this paper is to transform a user‐authentication process for a document delivery and borrowing service into a simplified and unified logon access method consistent with other library services by leveraging a University Lightweight Directory Access Protocol (LDAP).Design/methodology/approachData fields were analyzed from the Texas A&M University Libraries' interlibrary loan and document delivery application (ILLiad) to determine the unique information that was critical to maintain account security and historical usage. As an added feature, plans were made and implemented to provide account authentication with another system entity through the use of Shibboleth software.FindingsThe campus LDAP proved a popular added feature. Since the implementation of the new authentication and authorization methods, usage of the service has increased even though the number of actual live accounts has decreased. Account security and user affiliation statistics were greatly improved.Practical implicationsMore efficient authentication and authorization processes increased the effectiveness of the document delivery service. Use of the LDAP protocol and Shibboleth software enhanced the authentication process for both the library and the user. Eliminating the need for a separate set of credentials for use of the document delivery service reduced the potential for password fatigue.Originality/valueThe creation and implementation of different technologies to further refine migration and systematic processes. A guide to the steps taken to facilitate moving from one authentication method to a more advanced system leveraging Shibboleth and .ASP for quality assurance.
Trimmed NURBS surface applications in computerized 3D fashion design for garment industry
Authors: Fang Jing‐Jing , Tien Chia‐Hsin 
Published: February 2013

PurposeThe purpose of this paper is to introduce an approach to generating a basic bodice based on human body structure. The trimmed non‐uniform rational B‐spline (NURBS) method is applied to develop computer‐aided tailoring and styling capabilities in 3D fashion design.Design/methodology/approachBased on the body structure of the scanned subject, a parameterized method to intuitively generate adaptable bodices is proposed. NURBS surfaces are applied to provide an interactive styling design based on the preset bodice. To mimic dress shearing for any specific requirement, trimmed curves are applied to the NURBS‐based clothes. A simple periodic function is introduced to develop a wave‐like style garment.FindingsNewly‐styled apparel designed in the third dimension is much more intuitive than conceptual drawings on paper. In order to create wearable garments using the computer‐aided apparel design tools, the expertise of pattern makers is necessary.Originality/valueInteractive free form surface creation and its associated techniques, by means of trimmed NURBS, are applied to computer‐assisted garment design in three dimensions. The technique provides the designers with a more freely expressive means of creativity.
An immune co‐evolutionary algorithm based approach for problems related to clothing uniform assignment
Authors: Hu Zhi‐Hua , Yu Xiao‐Kun , Sheng Zhao‐Han 
Published: February 2013

PurposeThe purpose of this paper is to study the problem of clothing uniform assignment (CUA) and propose an immune co‐evolutionary algorithm to search optimal assignments of uniform garments to employees.Design/methodology/approachMulti‐size fitting measures are proposed based on multi‐attribute decision making. An immune co‐evolutionary algorithm incorporating immune inspired mechanisms is proposed to search optimal assignments.FindingsThe experimental results show promising performance. The model and the algorithm are aiming at a valuable problem and can be incorporated into the information systems for large‐scale industrial companies.Originality/valueUniform assignment problem is modeled with garment size fitting constraints. Multi‐size fitting measures are proposed based on multi‐attribute decision making and an immune co‐evolutionary algorithm is proposed to search optimal assignments.
Propensity to pay dividends and catering incentives in Thailand
Authors: Tangjitprom Nopphon 
Published: February 2013

PurposeThe purpose of this paper is to examine whether the catering incentives of dividends can influence firms' dividend payment decisions in Thailand.Design/methodology/approachThe sample includes all listed stocks in the Stock Exchange of Thailand during the years 1992‐2009, excluding the firms from financial industries and firms with incomplete information. The catering incentives are measured by dividend premium. The firms' dividend payment decisions are measured by propensity to pay dividends and decision to change dividends.FindingsThe findings yield qualitatively consistent with the previous research. After controlling for the effect of the Asian Crisis during 1997‐1999, the result shows that the firm's decision to pay dividend could be affected by the catering incentives. Furthermore, dividend premium will reduce the probability that firms will decide to cut dividend payment from previous years.Research limitations/implicationsThe result is limited to the availability of historical data. The Stock Exchange in Thailand has been established for only 35 years. With the lack of availability and completeness of data, the historical data could be gathered for only 18 years.Practical implicationsInvestors in Thailand show their preference for dividend incomes. This could be the catering incentive of the firm to decide to pay dividends.Originality/valueThis paper offers the evidence of catering incentives of dividend proposed by Baker and Wurgler in the emerging market. Even though the result is not strong, it can be the evidence supporting the catering theory of dividend, not only in well‐developed markets, but also in emerging markets such as Thailand.
Using variable beam spot scanning to improve the efficiency of stereolithography process
Authors: Yi Cao , Dichen Li , Jing Wu 
Published: February 2013

PurposeThe purpose of this paper is to present a new stereolithograhy (SL) process which could substantially improve the efficiency of building process through controlling the beam spot size and optimizing the process parameters dynamically.Design/methodology/approachIn this process, the focus length of UV laser scanning head is changed by the dynamic focus mirror according to the building program. The beam spot in the resin surface varies with the focus length, and the laser power is adjusted accordingly to the changing spot in building process.FindingsThe study finds that the efficiency of building process has a close relationship with the beam spot size. The experiments showed that the larger the laser spot diameter was, the less the depth and the larger the width of the cured lines would be. Then the building program would adjust the UV laser power to compensate for the decreased curing depth caused by the enlarged beam spot. At last, the spot compensation was optimized for the new method that could keep the same building accuracy with the traditional SL process.Originality/valueThe variable beam spot process could improve the building efficiency by 30 percent without increasing the cost of system, and keep the same accuracy compared with the conventional SL process.
Social capital and sociological resilience in megacities context
Authors: Lucini Barbara 
Published: February 2013

PurposeDuring the last few decades social resilience and social vulnerability have been two crucial sociological concepts for everyone involved in crisis and disaster management. The fundamental purpose in the present analysis is based on the consideration of resilience from a sociological perspective and the notion of social capital, its proper features, dynamics and processes within different groups of people involved in a disaster process.Design/methodology/approachAll these social components could be evaluated as social indicators of vulnerability and resilience according to the sociological approach and its main theories about social capital and resilience, social and methodological implications. The operative context of this theoretical reflection has been constituted by megacities, considered as the “new” social space where, nowadays, major social relations and risk reduction actions take place through a collaborative pattern not based on a top down organizational model.FindingsAttention is focused on the sociological findings as the importance of social cohesion, strengthening social relationships with particular consideration for the crucial role of social capital during all stages of the disaster process: prevention and preparedness, planning, warning communication, physical and psychological impacts, emergency and disaster response, recovery and reconstruction with the specific aim of enhancing social resilience and attempting to diminish social vulnerability.Originality/valueThe originality of this proposal in the field of disaster resilience is its use of the sociological approach and its theoretical characteristics and instruments, such as, for example, the definitions of social capital. The consideration for this topic will be future challenges to improve urban disaster risk reduction according to social relationship and its characteristics of interconnection and multidimensionality.
The inter‐enterprise relationship and trade credit
Authors: Han Xueliang , Wang Xiao , Wang Huijie 
Published: February 2013

PurposeAs the information asymmetry and credit rationing are existing, SMEs are finding it difficult to gain bank credit. Trade credit, as a one off substitution, gives another access to SME finance. The purpose of this paper is to examine the effects between inter‐corporate relationships (including the direct‐relationship and indirect‐relationship) and trade credit.Design/methodology/approachFollowing the mainstream of qualitative and quantitative research, this paper examines the relationship between SMEs and their analysis of the commercial credit financing. In the empirical research, through text‐analysis to build the variable of “the number of unions that enterprises take part in”. First, find the relate union through “baidu and googel” by the keywords of enterprise's name and the Union; then two persons select and determine which the enterprise may take part in and calculate the number. For that which cannot make sure, ask the third person. Learning from the HHI‐index, the paper calculates according to the amount and times of the enterprise related transactions to build the variable of “the concentration of enterprises related transactions”. Based on three years panel data (from 2007 to 2009) of 196 small and medium listed companies, this paper establishes the empirical models and examines the effects between inter‐corporate relationship and trade credit through the random effect model.FindingsThe paper finds that: SMEs must pay attention to inter‐enterprise relationship management. Without the power and status owned by large enterprises, SMEs have to learn how to survive in the complex and changing environment. The managers of SMEs have to develop their skills to manage the inter‐enterprise relationship. It finds the effects between inter‐enterprise relationship and trade credit seem like a “U” shape. SMEs should take part in associations wittingly and establish the relationship with the others, as all economic activities are embedded in the social network. This research shows that participating in the business associations, especially provincial associations, has a positive impact to gain trade credit.Originality/valueThis paper breaks through the traditional SMEs' financing theories. In this paper, the individual level theories have been extended to the organizational level. This paper also expands the study of the social capital theory and gives a more tolerable empirical test.