bluuebunny/crossref_metadata_2025 huggingface dataset:
Process Intensification in Fuel Cell CHP Systems, the ReforCELL Project
Authors: Viviente José , Escribano Sylvie , Manzolini Giampaolo , Stange Marit , Tregambe Carlo , Roses Leonardo , Koekkoek Arjan , Guignard Cécile , Dauriat Arnaud , Gallucci Fausto
Published: October 2016

This paper reports the findings of a FP7/FCH JU project (ReforCELL) that developed materials (catalysts and membranes) and an advance autothermal membrane reformer for a micro Combined Heat and Power (CHP) system of 5 kWel based on a polymer electrolyte membrane fuel cell (PEMFC). In this project, an active, stable and selective catalyst was developed for the reactions of interest and its production was scaled up to kg scale (TRL5 (TRL: Technology Readiness Level)). Simultaneously, new membranes for gas separation were developed. In particular, dense supported thin palladium-based membranes were developed for hydrogen separation from reactive mixtures. These membranes were successfully scaled up to TRL4 and used in lab-scale reactors for fluidized bed steam methane reforming (SMR) and autothermal reforming (ATR) and in a prototype reactor for ATR. Suitable sealing techniques able to integrate the different membranes in lab-scale and prototype reactors were also developed. The project also addressed the design and optimization of the subcomponents (BoP) for the integration of the membrane reformer to the fuel cell system.
A Quantitative Proteomics Approach to Clinical Research with Non-Traditional Samples
Authors: Licier Rígel , Miranda Eric , Serrano Horacio
Published: October 2016

The proper handling of samples to be analyzed by mass spectrometry (MS) can guarantee excellent results and a greater depth of analysis when working in quantitative proteomics. This is critical when trying to assess non-traditional sources such as ear wax, saliva, vitreous humor, aqueous humor, tears, nipple aspirate fluid, breast milk/colostrum, cervical-vaginal fluid, nasal secretions, bronco-alveolar lavage fluid, and stools. We intend to provide the investigator with relevant aspects of quantitative proteomics and to recognize the most recent clinical research work conducted with atypical samples and analyzed by quantitative proteomics. Having as reference the most recent and different approaches used with non-traditional sources allows us to compare new strategies in the development of novel experimental models. On the other hand, these references help us to contribute significantly to the understanding of the proportions of proteins in different proteomes of clinical interest and may lead to potential advances in the emerging field of precision medicine.
Anti-Muslim Sentiments and Violence: A Major Threat to Ethnic Reconciliation and Ethnic Harmony in Post-War Sri Lanka
Authors: Sarjoon Athambawa , Yusoff Mohammad , Hussin Nordin
Published: October 2016

Following the military defeat of LTTE terrorism in May 2009, the relationship between ethnic and religious groups in Sri Lanka became seriously fragmented as a result of intensified anti-minority sentiments and violence. Consequently, the ethnic Muslims (Moors) became the major target in this conflict. The major objective of this study is to critically evaluate the nature and the impact of the anti-Muslim sentiments expressed and violence committed by the extreme nationalist forces during the process of ethnic reconciliation in post-war Sri Lanka. The findings of the study reveal that, with the end of civil war, Muslims have become “another other” and also the target of ethno-religious hatred and violence from the vigilante right-wing ethno-nationalist forces that claim to be protecting the Sinhala-Buddhist nation, race, and culture in Sri Lanka. These acts are perpetrated as part of their tactics aimed to consolidate a strong Sinhala-Buddhist nation—and motivated by the state. Furthermore, the recourse deficit and lack of autonomy within the organizational hierarchy of the Buddhist clergy have motivated the nationalist monks to engage in politics and promote a radical anti-minority rhetoric. This study recommends institutional and procedural reforms to guide and monitor the activities of religious organizations, parties, and movements, together with the teaching of religious tolerance, as the preconditions for ethnic reconciliation and ethnic harmony in post-war Sri Lanka. This study has used only secondary data, which are analyzed in a descriptive and interpretive manner.
GPD+ Wet Tropospheric Corrections for CryoSat-2 and GFO Altimetry Missions
Authors: Fernandes M. , Lázaro Clara
Published: October 2016

Due to its large space-time variability, the wet tropospheric correction (WTC) is still considered a significant error source in satellite altimetry. This paper presents the GNSS (Global Navigation Satellite Systems) derived Path Delay Plus (GPD+), the most recent algorithm developed at the University of Porto to retrieve improved WTC for radar altimeter missions. The GPD+ are WTC estimated by space-time objective analysis, by combining all available observations in the vicinity of the point: valid measurements from the on-board microwave radiometer (MWR), from GNSS coastal and island stations and from scanning imaging MWR on board various remote sensing missions. The GPD+ corrections are available both for missions which do not possess an on-board microwave radiometer such as CryoSat-2 (CS-2) and for all missions which carry this sensor, by addressing the various error sources inherent to the MWR-derived WTC. To ensure long-term stability of the corrections, the large set of radiometers used in this study have been calibrated with respect to the Special Sensor Microwave Imager (SSM/I) and the SSM/I Sounder (SSM/IS). The application of the algorithm to CS-2 and Geosat Follow-on (GFO), as representative altimetric missions without and with a MWR aboard the respective spacecraft, is described. Results show that, for both missions, the new WTC significantly reduces the sea level anomaly (SLA) variance with respect to the model-based corrections. For GFO, the new WTC also leads to a large reduction in SLA variance with respect to the MWR-derived WTC, recovering a large number of observations in the coastal and polar regions and full sets of tracks and several cycles when MWR measurements are missing or invalid. Overall, the algorithm allows the recovery of a significant number of measurements, ensuring the continuity and consistency of the correction in the open-ocean/coastal transition zone and at high latitudes.
Fabrication of All-SiC Fiber-Optic Pressure Sensors for High-Temperature Applications
Authors: Jiang Yonggang , Li Jian , Zhou Zhiwen , Jiang Xinggang , Zhang Deyuan
Published: October 2016

Single-crystal silicon carbide (SiC)-based pressure sensors can be used in harsh environments, as they exhibit stable mechanical and electrical properties at elevated temperatures. A fiber-optic pressure sensor with an all-SiC sensor head was fabricated and is herein proposed. SiC sensor diaphragms were fabricated via an ultrasonic vibration mill-grinding (UVMG) method, which resulted in a small grinding force and low surface roughness. The sensor head was formed by hermetically bonding two layers of SiC using a nickel diffusion bonding method. The pressure sensor illustrated a good linearity in the range of 0.1–0.9 MPa, with a resolution of 0.27% F.S. (full scale) at room temperature.
An Efficient Recommendation Filter Model on Smart Home Big Data Analytics for Enhanced Living Environments
Authors: Chen Hao , Xie Xiaoyun , Shu Wanneng , Xiong Naixue
Published: October 2016

With the rapid growth of wireless sensor applications, the user interfaces and configurations of smart homes have become so complicated and inflexible that users usually have to spend a great amount of time studying them and adapting to their expected operation. In order to improve user experience, a weighted hybrid recommender system based on a Kalman Filter model is proposed to predict what users might want to do next, especially when users are located in a smart home with an enhanced living environment. Specifically, a weight hybridization method was introduced, which combines contextual collaborative filter and the contextual content-based recommendations. This method inherits the advantages of the optimum regression and the stability features of the proposed adaptive Kalman Filter model, and it can predict and revise the weight of each system component dynamically. Experimental results show that the hybrid recommender system can optimize the distribution of weights of each component, and achieve more reasonable recall and precision rates.
Use of Distributed Temperature Sensing Technology to Characterize Fire Behavior
Authors: Cram Douglas , Hatch Christine , Tyler Scott , Ochoa Carlos
Published: October 2016

We evaluated the potential of a fiber optic cable connected to distributed temperature sensing (DTS) technology to withstand wildland fire conditions and quantify fire behavior parameters. We used a custom-made ‘fire cable’ consisting of three optical fibers coated with three different materials—acrylate, copper and polyimide. The 150-m cable was deployed in grasslands and burned in three prescribed fires. The DTS system recorded fire cable output every three seconds and integrated temperatures every 50.6 cm. Results indicated the fire cable was physically capable of withstanding repeated rugged use. Fiber coating materials withstood temperatures up to 422 °C. Changes in fiber attenuation following fire were near zero (−0.81 to 0.12 dB/km) indicating essentially no change in light gain or loss as a function of distance or fire intensity over the length of the fire cable. Results indicated fire cable and DTS technology have potential to quantify fire environment parameters such as heat duration and rate of spread but additional experimentation and analysis are required to determine efficacy and response times. This study adds understanding of DTS and fire cable technology as a potential new method for characterizing fire behavior parameters at greater temporal and spatial scales.
Analysis of the Effects of Thermal Environment on Optical Systems for Navigation Guidance and Control in Supersonic Aircraft Based on Empirical Equations
Authors: Cheng Xuemin , Yang Yikang , Hao Qun
Published: October 2016

The thermal environment is an important factor in the design of optical systems. This study investigated the thermal analysis technology of optical systems for navigation guidance and control in supersonic aircraft by developing empirical equations for the front temperature gradient and rear thermal diffusion distance, and for basic factors such as flying parameters and the structure of the optical system. Finite element analysis (FEA) was used to study the relationship between flying and front dome parameters and the system temperature field. Systematic deduction was then conducted based on the effects of the temperature field on the physical geometry and ray tracing performance of the front dome and rear optical lenses, by deriving the relational expressions between the system temperature field and the spot size and positioning precision of the rear optical lens. The optical systems used for navigation guidance and control in supersonic aircraft when the flight speed is in the range of 1–5 Ma were analysed using the derived equations. Using this new method it was possible to control the precision within 10% when considering the light spot received by the four-quadrant detector, and computation time was reduced compared with the traditional method of separately analysing the temperature field of the front dome and rear optical lens using FEA. Thus, the method can effectively increase the efficiency of parameter analysis and computation in an airborne optical system, facilitating the systematic, effective and integrated thermal analysis of airborne optical systems for navigation guidance and control.
Generic Dynamic Environment Perception Using Smart Mobile Devices
Authors: Danescu Radu , Itu Razvan , Petrovai Andra
Published: October 2016

The driving environment is complex and dynamic, and the attention of the driver is continuously challenged, therefore computer based assistance achieved by processing image and sensor data may increase traffic safety. While active sensors and stereovision have the advantage of obtaining 3D data directly, monocular vision is easy to set up, and can benefit from the increasing computational power of smart mobile devices, and from the fact that almost all of them come with an embedded camera. Several driving assistance application are available for mobile devices, but they are mostly targeted for simple scenarios and a limited range of obstacle shapes and poses. This paper presents a technique for generic, shape independent real-time obstacle detection for mobile devices, based on a dynamic, free form 3D representation of the environment: the particle based occupancy grid. Images acquired in real time from the smart mobile device’s camera are processed by removing the perspective effect and segmenting the resulted bird-eye view image to identify candidate obstacle areas, which are then used to update the occupancy grid. The occupancy grid tracked cells are grouped into obstacles depicted as cuboids having position, size, orientation and speed. The easy to set up system is able to reliably detect most obstacles in urban traffic, and its measurement accuracy is comparable to a stereovision system.
Evaluating the Impacts of Bus Fare on Social Equity Based on IC Card Data in China
Authors: Cheng Shaowu , Gao Qian , Zhang Yaping
Published: October 2016

Bus fare equity has attracted significant attention in China in the past few years. Compared with developed countries, China’s intelligent transportation systems are in their infancy, with immature bus fare policies being used in many public transit systems. The methods used for evaluating public transit fare equity in developed countries compare different fare policies based on rich data and cannot be directly applied in developing countries like China. In this paper, we present a method that uses IC card data, bus-mounted GPS data, and relevant statistical yearbook data to evaluate the equity of flat bus fare. The method ranks the factors that influence the impacts of bus fare on social equity for different passenger groups and indicates that trip distance and passenger boarding time are the two primary factors for bus fare equity from a resource allocation perspective. Finally, we present a case study that evaluates the flat fare policy for route 204 in Suzhou using the proposed method. The results show that the proposed method is feasible.
The New Generation of Operations Research Methods in Supply Chain Optimization: A Review
Authors: Pourhejazy Pourya , Kwon Oh
Published: October 2016

The possibilities of applying Operations Research (O.R.) techniques in the design of real-world systems are vast. The optimization and design of the supply chain network (SCN) is one of the relevant topics that has directed the attention of many scholars. Sound decisions in this regard, including the proper selection of the facility’s location, transportation modes and routes and inventory management policies, can noticeably improve the systems performance. Over 380 articles published between 2005 and 2016 in the ISI/Web of Science database have applied advanced O.R. techniques in SCN optimization studies. This paper offers a systematic review of these published contributions by focusing on two categories of O.R. approaches most recently applied for the design of SC systems: integrated mathematical modeling and simulation-optimization (S-O) frameworks. A taxonomy analysis of the mentioned approaches is presented based on the supply chain elements. A bibliometric analysis is also conducted to provide technical insights into the possible gaps in the field. Moreover, the relevant studies on SC sustainability are highlighted. The research results are supportive of the S-O frameworks as either an alternative approach or an effective solution method for the integrated problems. The research outcomes can provide researchers in the field with useful details of the integrated problems and S-O frameworks as the most recent O.R. methodologies in the field of SC optimization.
Analytic Hierarchy Process-Based Analysis to Determine the Barriers to Implementing a Material Efficiency Strategy: Electrical and Electronics’ Companies in the Malaysian Context
Authors: Ho Fu , Abdul-Rashid Salwa , Raja Ghazilla Raja
Published: October 2016

Material efficiency is one of the most important strategies for helping manufacturing companies achieve sustainability in their production activities. However, there are many barriers to the implementation of material efficiency strategies in the manufacturing processes and overall business operations. The aim of this study is to identify and evaluate the barriers faced by Electrical and Electronics (E&E) manufacturing companies in Malaysia in implementing material efficiency strategies. A mixed-mode research method was employed to collect data from these companies. Semi-structured interviews were used to identify the barriers faced by the Malaysian Electrical and Electronics (E&E) industry, while an Analytic Hierarchy Process (AHP) survey was utilized to determine the importance of each barrier. Seven companies participated in the semi-structured interviews, and 18 companies took part in the AHP survey. Nine barriers were generated from analysis of the interviews, and were then ranked by priority using the AHP method. These important findings could be used as a guide for E&E companies in managing or overcoming barriers during the implementation of material efficiency strategies and other sustainable manufacturing activities.
Which Quantum Theory Must be Reconciled with Gravity? (And What Does it Mean for Black Holes?)
Authors: Lake Matthew
Published: October 2016

We consider the nature of quantum properties in non-relativistic quantum mechanics (QM) and relativistic quantum field theories, and examine the connection between formal quantization schemes and intuitive notions of wave-particle duality. Based on the map between classical Poisson brackets and their associated commutators, such schemes give rise to quantum states obeying canonical dispersion relations, obtained by substituting the de Broglie relations into the relevant (classical) energy-momentum relation. In canonical QM, this yields a dispersion relation involving ℏ but not c, whereas the canonical relativistic dispersion relation involves both. Extending this logic to the canonical quantization of the gravitational field gives rise to loop quantum gravity, and a map between classical variables containing G and c, and associated commutators involving ℏ. This naturally defines a “wave-gravity duality”, suggesting that a quantum wave packet describing self-gravitating matter obeys a dispersion relation involving G, c and ℏ. We propose an Ansatz for this relation, which is valid in the semi-Newtonian regime of both QM and general relativity. In this limit, space and time are absolute, but imposing v max = c allows us to recover the standard expressions for the Compton wavelength λ C and the Schwarzschild radius r S within the same ontological framework. The new dispersion relation is based on “extended” de Broglie relations, which remain valid for slow-moving bodies of any mass m. These reduce to canonical form for m ≪ m P , yielding λ C from the standard uncertainty principle, whereas, for m ≫ m P , we obtain r S as the natural radius of a self-gravitating quantum object. Thus, the extended de Broglie theory naturally gives rise to a unified description of black holes and fundamental particles in the semi-Newtonian regime.
An Assessment of Epidemiology Capacity in a One Health Team at the Provincial Level in Thailand
Authors: Hinjoy Soawapak , Wongkumma Arthicha , Kongyu Somkid , Smithsuwan Punnarai , Suangtho Paphanij , Yingyong Thitipong , Chanvatik Sunicha , Colombe Soledad
Published: October 2016

A multi-sectoral core epidemiology capacity assessment was conducted in provinces that implemented One Health services in order to assess the efficacy of a One Health approach in Thailand. In order to conduct the assessment, four provinces were randomly selected as a study group from a total of 19 Thai provinces that are currently using a One Health approach. As a control group, four additional provinces that never implemented a One Health approach were also sampled. The provincial officers were interviewed on the epidemiologic capacity of their respective provinces. The average score of epidemiologic capacity in the provinces implementing the One Health approach was 66.45%, while the provinces that did not implement this approach earned a score of 54.61%. The epidemiologic capacity of surveillance systems in provinces that utilized the One Health approach earned higher scores in comparison to provinces that did not implement the approach (75.00% vs. 53.13%, p-value 0.13). Although none of the capacity evaluations showed significant differences between the two groups, we found evidence that provinces implementing the One Health approach gained higher scores in both surveillance and outbreak investigation capacities. This may be explained by more efficient capacity when using a One Health approach, specifically in preventing, protecting, and responding to threats in local communities.
Drought and Carbon Cycling of Grassland Ecosystems under Global Change: A Review
Authors: Lei Tianjie , Pang Zhiguo , Wang Xingyong , Li Lin , Fu June , Kan Guangyuan , Zhang Xiaolei , Ding Liuqian , Li Jiren , Huang Shifeng , Shao Changliang
Published: October 2016

In recent years, the increased intensity and duration of droughts have dramatically altered the structure and function of grassland ecosystems, which have been forced to adapt to this change in climate. Combinations of global change drivers such as elevated atmospheric CO2 concentration, warming, nitrogen (N) deposition, grazing, and land-use change have influenced the impact that droughts have on grassland C cycling. This influence, to some extent, can modify the relationship between droughts and grassland carbon (C) cycling in the multi-factor world. Unfortunately, prior reviews have been primarily anecdotal from the 1930s to the 2010s. We investigated the current state of the study on the interactive impacts of multiple factors under drought scenarios in grassland C cycling and provided scientific advice for dealing with droughts and managing grassland C cycling in a multi-factor world. Currently, adequate information is not available on the interaction between droughts and global change drivers, which would advance our understanding of grassland C cycling responses. It was determined that future experiments and models should specifically test how droughts regulate grassland C cycling under global changes. Previous multi-factor experiments of current and future global change conditions have studied various drought scenarios poorly, including changes in precipitation frequency and amplitude, timing, and interactions with other global change drivers. Multi-factor experiments have contributed to quantifying these potential changes and have provided important information on how water affects ecosystem processes under global change. There is an urgent need to establish a systematic framework that can assess ecosystem dynamic responses to droughts under current and future global change and human activity, with a focus on the combined effects of droughts, global change drivers, and the corresponding hierarchical responses of an ecosystem.
Nonlinear Relationship of Near-Bed Velocity and Growth of Riverbed Periphyton
Authors: Ateia Mohamed , Nasr Mahmoud , Ikeda Akira , Okada Hisako , Fujii Manabu , Natsuike Masafumi , Yoshimura Chihiro
Published: October 2016

Artificial streams were set up to test the relationship between near-bed water velocity and periphyton growth. Periphyton community samples collected from a Japanese stream were incubated for 44 days under a light intensity of 252 ± 72 μmol·photons/m2·s, a temperature of 20–25 °C, and three near-bed water velocity classes: low (<17.9 cm/s), moderate (17.9–32.8 cm/s), and high (>32.8 cm/s). A logistic model was applied to estimate the maximum net growth rate (μmax) and carrying capacity (Bmax). A response surface method was also applied to estimate chlorophyll a (Chl-a) and ash-free dry mass (AFDM) with respect to the independent variables (i.e., time and water velocity). We detected both the highest μmax (1.99 d−1) and highest Bmax (7.01 mg/m2) for Chl-a at the moderate water velocity. For AFDM, we observed the highest μmax (0.57 d−1) and Bmax (1.47 g/m2) at the low and moderate velocity classes, respectively. The total algae density in the region of moderate velocity at the end of the experiment was 6.47 × 103 cells/cm2, corresponding to levels 1.7 and 1.3 times higher than those at lower and higher velocities, respectively. Our findings indicated that the moderate near-bed water velocity provided favorable conditions for algal growth and corresponding biomass accumulation.
Ératosthène, les hydrocarbures et saint Onésiphore
Authors: Bakirtzis Charalambos
Published: October 2016

In the Life of Saint Onesiphoros there is an unnoted latent testimony concerning the release of a large quantity of hydrocarbons following the earthquake at Eratosthenes at the beginning of the 4th century AD.
La basilique Hors-les-murs (« At Meydan ») dans la topographie de la ville portuaire de Kourion
Authors: Bourrier Alexandre
Published: October 2016

The unpublished excavation undertaken at the Early Byzantine Extra Muros

Basilica of Kourion from 1971 to 1974 has brought to light a small three-aisled structure on the so-called site of the sanctuary dedicated to Demeter and Kore. Thus, a topographic study of the extramural area of the city of Kourion will allow the investigation of the history of the structure of the basilica and the liturgical function of its spaces, while research on the archaeological material will help date the construction of the basilica more precisely.
The South Basilica at Arsinoe (Polis-tes-Chrysochou): Change and innovation in an Early Christian Basilica on Cyprus
Authors: Caraher William , Scott Moore R. , Olson Brandon R. , Papalexandrou Amy
Published: October 2016

La basilique Sud de Polis-tes-Chrysochou (ancienne Arsinoé), construite à la fin du vie siècle apr. J.-C., est une église chypriote typique de la fin de l’Antiquité. Nous discutons ici les modalités des transformations apportées à sa structure et la façon dont ses constructeurs ont résolu les problèmes que présentait ce site, en particulier en ce qui concernait l’eau et son drainage. Nous présentons ici pour la première fois la chronologie du bâtiment à partir des témoignages archéologiques en contexte et non d’une analyse stylistique de sa structure et de ses éléments décoratifs. Nous indiquons brièvement quelques relations possibles avec d’autres édifices de l’île et de la région.
Imperial involvement in the governance of Cyprus during the years 653-965: Archaeological evidence from lead seals
Authors: Metcalf David
Published: October 2016

Dans une période archéologiquement obscure, les sceaux en plomb constituent un complément fondamental aux sources littéraires pour ce qui concerne l’administration de Chypre entre 653 et la reconquête de 965 ; ils apportent des témoignages importants sur l’implication impériale dans les affaires chypriotes à cette époque.
The Early Christian baptisteries of Cyprus (4th-7th centuries AD): Typological analysis of the architecture and of the baptismal structure
Authors: Michail Rania
Published: October 2016

Cet article a pour but de présenter avec précision la structure architecturale et le plan des baptistères paléochrétiens de Chypre, par une analyse de leurs aménagements architecturaux et liturgiques. Cette analyse, fondée sur les témoignages archéologiques et les sources littéraires disponibles, identifie des particularités locales qui permettent de différencier clairement ces exemples chypriotes d’autres structures baptismales contemporaines dans différentes régions de l’orbis christianus antiquus.
Le monastère des Hiereôn (des Prêtres) à Paphos. Du paganisme au christianisme
Authors: Perdikis Stylianos
Published: October 2016

In a manuscript, Ephraim the Athenian (18th century) mentions that monastery of

Hiereon was established by Saints Eutychios and Nicolas, after they destroyed a temple of a pagan goddess. Later Nicolas, who was probably of Cypriot descent, became bishop of Myra in Lycia (Asia Minor). Three pre-Christian inscriptions, found within the monastery premises, assure the existence of a pagan temple dedicated to Hera in the area. One of these, relates that Nicocles, king of Paphos (4th century BC), erected pillars at the temple of Hera. Are these pillars the same as those that today divide the two parts of the Christian church, which, was founded by saint Eutychios with the participation of Saint Nicolas, was built at the beginning of the AD 4th century ? Architectural remains of the early Christian era are found at other places of the monastery (synthronon, small pillars of the templon screen). Furthermore, a circular glass medallion was also found there. It has a diameter of 44 mm and depicts a deeply embossed Christogram, comprising an isosceles cross and the Greek letter P (rhô). This was most probably attached to a glass vessel. Similar objects can be found in collections outside Cyprus, and are believed to belong to the 4th century AD.
La "France de Chypre" de Nicolas Iorga. Aux origines de l’idée de «la France hors de France»
Authors: Mureșan Dan Ioan
Published: October 2016

With his monumental work of historian and, above all, as of discoverer and editor of documents, French scholar Louis Mas Latrie (1815-1897) “ invented” the medieval Cypriot studies. This paper will attempt to situate Mas Latrie’s work within the political and ideological context of 19th-century French expansionism.
Vestigia Leonis. Ceramica d’origine veneziana e norditaliana rinvenuta a Cipro
Authors: von Wartburg Marie-Louise
Published: October 2016

Les fouilles de Kouklia (Chypre) ont livré une grande variété de céramiques importées d’Italie du Nord, qui constituent un des groupes les plus diversifiés de vaisselle de table datant du Moyen Âge tardif et de l‘ époque post-médiévale. Le matériel comprend des Maioliche aussi bien que des Glazed Slip Wares. Parmi les majoliques, les groupes berettino sont bien représentés et témoignent souvent de grandes similarités avec les productions des ateliers de Vénétie. On observe d’autres parentés marquées entre des productions de Vénétie et les types de céramiques à engobe qui sont majoritaires. Les productions de type graffita arcaica padana et arcaica tardiva, bien connus à la fin du XIVe s. et au XVe, sont suivis aux XVe et au XVIe, par les céramique de type graffita rinascimentale et apparentés. Dans les dernières décennies du XVIe s. et au début du XVIIe, les céramiques de type graffite postrinascimentale (surtout le type alla trevisana) sont associées à des vases à engobe portant divers décors peints, ou simplement monochromes.
Étude sur l'état politique de l'Italie depuis la paix de Constance jusqu'au milieu du XIVe siècle (1183-1355)
Authors: Huillard-Bréholles Alphonse
Published: October 2016

Il résulte de ce tableau que, depuis i 1 85 jusqu'à la mort de Henri VI, les juges de la cour impériale fonctionnèrent sans interruption ; qu'il y eut un temps d'arrêt jusqu'en 1209, époque où Othon IV releva l'influence de l'Empire en Italie ; que, de 1209 à 1213, durée de son règne effectif, les juges reprirent l'exercice de leurs fonctions ; que, pendant la première partie du règne, de Frédéric II et. jusqu'à sa rupture définitive avec la ligue lombarde, ils n'eurent pas d'action, sauf peut-être en Toscane ; que, depuis la rupture et le commencement de la guerre en 1237, les légats et les vicaires généraux entretinrent à leur suite des juges, qui étaient plutôt des agents politiques que des magistrats régulièrement institués.
Regiocontroled Pd-catalysed C5-arylation of 3-substituted thiophene derivatives using a bromo-substituent as blocking group
Authors: Brahim Mariem , Ben Ammar Hamed , Soulé Jean-François , Doucet Henri
Published: October 2016

The use of a bromo-substituent as blocking group at the C2-position of 3-substituted thiophenes allows the regioselective introduction of aryl substituents at C5-position via Pd-catalysed direct arylation. With 1 mol % of a phosphine-free Pd catalyst, KOAc as the base and DMA as the solvent and various electron-deficient aryl bromides as aryl sources, C5-(hetero)arylated thiophenes were synthesized in moderate to high yields, without cleavage of the thienyl C–Br bond. Moreover, sequential direct thienyl C5-arylation followed by Pd-catalysed direct arylation or Suzuki coupling at the C2-position allows to prepare 2,5-di(hetero)arylated thiophenes bearing two different (hetero)aryl units in only two steps. This method provides a “green” access to arylated thiophene derivatives as it reduces the number of steps to prepare these compounds and also the formation of wastes.
STELLAR ATMOSPHERES, ATMOSPHERIC EXTENSION, AND FUNDAMENTAL PARAMETERS: WEIGHING STARS USING THE STELLAR MASS INDEX
Authors: Neilson Hilding R. , Baron Fabien , Norris Ryan , Kloppenborg Brian , Lester John B.
Published: October 2016

One of the great challenges of understanding stars is measuring their masses. The best methods for measuring stellar masses include binary interaction, asteroseismology, and stellar evolution models, but these methods are not ideal for red giant and supergiant stars. In this work, we propose a novel method for inferring stellar masses of evolved red giant and supergiant stars using interferometric and spectrophotometric observations combined with spherical model stellar atmospheres to measure what we call the stellar mass index, defined as the ratio between the stellar radius and mass. The method is based on the correlation between different measurements of angular diameter, used as a proxy for atmospheric extension, and fundamental stellar parameters. For a given star, spectrophotometry measures the Rosseland angular diameter while interferometric observations generally probe a larger limb-darkened angular diameter. The ratio of these two angular diameters is proportional to the relative extension of the stellar atmosphere, which is strongly correlated to the star’s effective temperature, radius, and mass. We show that these correlations are strong and can lead to precise measurements of stellar masses.
THE ORBITAL STRUCTURE OF A TIDALLY INDUCED BAR
Authors: Gajda Grzegorz , Łokas Ewa L. , Athanassoula E.
Published: October 2016

Orbits are the key building blocks of any density distribution, and their study helps us understand the kinematical structure and the evolution of galaxies. Here, we investigate orbits in a tidally induced bar of a dwarf galaxy, using an N-body simulation of an initially disky dwarf galaxy orbiting a Milky Way-like host. After the first pericenter passage, a tidally induced bar forms in the stellar component of the dwarf. The bar evolution is different than in isolated galaxies and our analysis focuses on the period before it buckles. We study the orbits in terms of their dominant frequencies, which we calculate in a Cartesian coordinate frame rotating with the bar. Apart from the well-known x1 orbits, we find many other types, mostly with boxy shapes of various degree of elongation. Some of them are also near-periodic, admitting frequency ratios of 4/3, 3/2, and 5/3. The box orbits have various degrees of vertical thickness but only a relatively small fraction of those have banana (i.e., smile/frown) or infinity-symbol shapes in the edge-on view. In the very center we also find orbits known from the potential of triaxial ellipsoids. The elongation of the orbits grows with distance from the center of the bar in agreement with the variation of the shape of the density distribution. Our classification of orbits leads to the conclusion that more than 80% of them have boxy shapes, while only 8% have shapes of classical x1 orbits.
TIME-DEPENDENT COROTATION RESONANCE IN BARRED GALAXIES
Authors: Wu Yu-Ting , Pfenniger Daniel , Taam Ronald E.
Published: October 2016

The effective potential neighboring the corotation resonance region in barred galaxies is shown to be strongly time-dependent in any rotating frame, due to the competition of nearby perturbations of similar strengths with differing rotation speeds. Contrary to the generally adopted assumption that in the bar rotating frame the corotation region should possess four stationary equilibrium points (Lagrange points), with high quality N-body simulations, we localize the instantaneous equilibrium points (EPs) and find that they circulate or oscillate broadly in azimuth with respect to the pattern speeds of the inner or outer perturbations. This implies that at the particle level the Jacobi integral is not well conserved around the corotation radius. That is, angular momentum exchanges decouple from energy exchanges, enhancing the chaotic diffusion of stars through the corotation region.
COSMIC SHEAR MEASUREMENT USING AUTO-CONVOLVED IMAGES
Authors: Li Xiangchong , Zhang Jun
Published: October 2016

We study the possibility of using quadrupole moments of auto-convolved galaxy images to measure cosmic shear. The autoconvolution of an image corresponds to the inverse Fourier transformation of its power spectrum. The new method has the following advantages: the smearing effect due to the point-spread function (PSF) can be corrected by subtracting the quadrupole moments of the auto-convolved PSF; the centroid of the auto-convolved image is trivially identified; the systematic error due to noise can be directly removed in Fourier space; the PSF image can also contain noise, the effect of which can be similarly removed. With a large ensemble of simulated galaxy images, we show that the new method can reach a sub-percent level accuracy under general conditions, albeit with increasingly large stamp size for galaxies of less compact profiles.
880 μm SMA POLARIZATION OBSERVATIONS OF THE QUASAR 3C 286
Authors: Hull Charles L. H. , Girart Josep M. , Zhang Qizhou
Published: October 2016

For decades, the bright radio quasar 3C 286 has been widely recognized as one of the most reliable polarization calibrators at centimeter wavelengths because of its unchanging polarization position angle and high polarization percentage. However, it has become clear in recent years that the polarization position angle of 3C 286 changes with increasing frequency, increasing from ∼33° at

3 cm to ∼38° at

1 mm. With the advent of high-sensitivity polarization observations by current and future (sub)millimeter telescopes, knowledge of the position angle of 3C 286 at higher frequencies is critical for calibration. We report the first polarization observations of 3C 286 at submillimeter wavelengths, taken at 880 μm (340 GHz) with the Submillimeter Array. We find a polarization position angle and percentage of

and 15.7% ± 0.8%, respectively, which is consistent with previous measurements at 1 mm.
IMPETUS: NEW CLOUDY’S RADIATIVE TABLES FOR ACCRETION ONTO A GALAXY BLACK HOLE
Authors: Ramírez-Velasquez José M. , Klapp Jaime , Gabbasov Ruslan , Cruz Fidel , Sigalotti Leonardo Di G.
Published: October 2016

We present digital tables for the radiative terms that appear in the energy and momentum equations used to simulate the accretion onto supermassive black holes (SMBHs) in the centers of galaxies. Cooling and heating rates and radiative accelerations are calculated with two different Spectral Energy Distributions (SEDs). One SED is composed of an accretion disk + [X-ray]-power law, while the other is made of an accretion disk + [Corona]-bremsstrahlung with

K, where pre-computed conditions of adiabatic expansion are included. Quantifications of different physical mechanisms at operation are presented, showing discrepancies and similarities between both SEDs in different ranges of fundamental physical parameters (i.e., ionization parameter, density, and temperature). With the recent discovery of outflows originating at sub-parsec scales, these tables may provide a useful tool for modeling gas accretion processes onto an SMBH.
Lyα EMITTER GALAXIES AT z ∼ 2.8 IN THE EXTENDED CHANDRA DEEP FIELD SOUTH. I. TRACING THE LARGE-SCALE STRUCTURE VIA Lyα IMAGING∗
Authors: Zheng Zhen-Ya , Malhotra Sangeeta , Rhoads James E. , Finkelstein Steven L. , Wang Jun-Xian , Jiang Chun-Yan , Cai Zheng
Published: October 2016

We present a narrowband survey with three adjacent filters for z = 2.8–2.9 Lyman alpha (Lyα) emitter (LAE) galaxies in the Extended Chandra Deep Field South (ECDFS), along with spectroscopic follow-up. With a complete sample of 96 LAE candidates in the narrowband NB466, we confirm the large-scale structure at z ∼ 2.8 suggested by previous spectroscopic surveys. Compared to the blank field detected with the other two narrowband filters NB470 and NB475, the LAE-density excess in NB466 (900 arcmin2) is ∼ 6.0 ± 0.8 times the standard deviation expected at z ∼ 2.8, assuming a linear bias of 2. The overdense large-scale structure in NB466 can be decomposed into four protoclusters, whose overdensities (each within an equivalent comoving volume 153 Mpc3) relative to the blank field (NB470+NB475) are in the range of 4.6–6.6. These four protoclusters are expected to evolve into a Coma-like cluster (M ≥ 1015
M
⊙) at z ∼ 0. We also investigate the various properties of LAEs at z = 2.8–2.9 and their dependence on the environment. The average star formation rates derived from the Lyα, rest-frame UV, and X-ray bands are ∼4, 10, and <16 M
⊙ yr−1, respectively, implying a Lyα escape fraction of 25% ≲ 

 ≲ 40% and a UV continuum escape fraction of

 ≳ 62% for LAEs at z ∼ 2.8. The Lyα photon density calculated from the integrated Lyα luminosity function in the overdense field (NB466) is ∼50% higher than that in the blank field (NB470+NB475), and more bright LAEs are found in the overdense field. The three brightest LAEs, including a quasar at z = 2.81, are all detected in the X-ray band and in NB466. These three LAE-active galactic nuclei contribute an extra 20%–30% Lyα photon density compared to other LAE galaxies. Furthermore, we find that LAEs in overdense regions have larger equivalent width values, bluer U − B and V − R (∼2–3σ) colors compared with those in lower density regions, indicating that LAEs in overdense regions are younger and possible less dusty. We conclude that the structure at z ∼ 2.8 in the ECDFS field is a very significant and rare density peak similar to the SSA22 protocluster, and narrowband imaging is an efficient method of detecting and studying such structures in the high-z universe.
Un dilemme pratique à trancher depuis des valeurs logées dans l’activité
Authors: Mezzena Sylvie , Stroumza Kim , Kramer Nicolas
Published: October 2016

Dans une recherche consacrée à la construction de la professionnalité depuis l’expérience de l’activité, nous interrogeons la formation des valeurs dans les enquêtes pratiques d’éducateurs spécialisés dans un foyer pour adolescents en rupture familiale et sociale. Dans un contexte de dédoublement de mission depuis l’injonction à créer des ateliers d’insertion, nous analysons la façon dont les professionnels sauvegardent pratiquement certaines valeurs auxquelles ils tiennent, en se confrontant à des dilemmes posés par cette évolution de leur mission. C’est le rôle et la place des valeurs comme guides depuis la stabilisation de manières de construire les problèmes pratiques qui sont examinés. Une analyse de délibérations en colloque est l’occasion d’observer combien les appréciations des professionnels, qui consistent à attribuer en situation des valeurs aux relations avec les autres objets de l’environnement, sont incessantes et déterminantes pour la poursuite de leur perspective dans leurs enquêtes pratiques. Ce constat ouvre une voie pour problématiser les valeurs de façon non absolutiste sans les opposer à l’expertise ou à la technicité professionnelle. Dans notre approche située et continuiste du savoir-faire, valeurs et connaissances tiennent ensemble dans le processus d’enquête construisant la professionnalité. Nous sommes ainsi amenés à discuter la définition de la connaissance, en la considérant comme une activité de mise en rapport située et continue, de nature pratique et non pas intellectualiste sous forme de contenus stockés dans le mental. Pour finir, nous tirons des conclusions pour la définition de la professionnalité.
Concevoir pour le pouvoir d’agir ensemble au sein des organisations : le cas d’un processus commercial
Authors: Poret Céline , Folcher Viviane , Motté Florence , Haradji Yvon
Published: October 2016

Dans un contexte de transformations de l’environnement économique et de changements structurels des entreprises qui doivent penser leur performance à partir de leurs processus transversaux, il est essentiel de comprendre les ressorts de l’efficacité des organisations pour répondre aux demandes de leurs clients. Un de ces ressorts est constitué par une coopération transverse entre les acteurs engagés dans un même processus, dans le cadre d’une activité collective d’un type nouveau : l’activité collective transverse et transactionnelle (Motté & Haradji, 2010 ; Poret, 2015). Cette activité collective implique pour les acteurs du processus de coopérer de façon transverse à l’organisation. À partir de la compréhension des modes de coordination qui fondent la coopération des acteurs d’un processus transverse, cette recherche met en évidence l’existence d’instruments qui permettent à ces acteurs de dépasser les frontières classiques de l’organisation pour coopérer : les Instruments Transitionnels Coopératifs (Poret, ibid), et propose un critère pour la conception des systèmes technico-organisationnels afin d’ancrer durablement la transversalité et de permettre le Pouvoir d’Agir Ensemble au cœur des organisations.
Étude de l’utilisation d’un environnement numérique de formation : méthode de remise en situation à l’aide de traces numériques de l’activité
Authors: Flandin Simon , Auby Marine , Ria Luc
Published: October 2016

Cet article est une contribution empirique au domaine de la formation instrumentée par le numérique mais aussi — et surtout — une contribution méthodologique à l’analyse des activités produites dans ce domaine. Il rend compte d’une étude pilote menée dans le cadre d’une recherche doctorale et qui a consisté à décrire, analyser et modéliser l’activité d’un enseignant stagiaire en situation d’utilisation autonome d’un environnement numérique de formation (ENF) basé sur des extraits vidéo. Un soin particulier est apporté à la description de la méthode. Deux types de données ont été recueillis et traités selon l’approche du programme « cours d’action » : (i) des données d’observation de l’activité (capture dynamique d’écran) et (ii) des données d’entretien de remise en situation à l’aide des traces numériques de cette activité. Les résultats (i) valident la pertinence de la méthode vis-à-vis de l’objet et de la question de recherche ; (ii) montrent des structures de différents niveaux dans l’organisation de l’activité en situation d’utilisation ; (iii) révèlent quatre registres de préoccupations (ou engagements-type) orientant l’utilisation de l’ENF. Nous concluons dans une perspective de technologie de la formation, en discutant la façon dont ces résultats informent, à certaines conditions et selon différentes temporalités, un processus de conception continuée de l’ENF.