bluuebunny/crossref_metadata_2025 huggingface dataset:
Les annonces d’offre d’emploi : une information publique mais ciblée
Authors: de Larquier Guillemette , Rieucau Géraldine
Published: February 2017

D’après les enquêtes Emploi (2003-2012), les annonces représentent en France la première source d’information sur les emplois : près de huit chercheurs d’emploi sur dix les étudient, mais près d’un sur deux n’y répond pas et, in fine , moins de 7 % des salariés ont trouvé leur emploi par ce biais. Pour analyser le fonctionnement de ce canal, l’article met en évidence l’autosélection des chercheurs d’emploi que les annonces induisent et la sélection sans médiation des candidats qui trouvent leur emploi en répondant à une annonce plutôt que par un autre canal. Il apparaît que le diplôme sélectionne à toutes les étapes et que les emplois trouvés sont le plus souvent en CDI et appartiennent à la catégorie des professions intermédiaires. Classification JEL  : J01, J64, D83.
Valorisation de la création et propriété industrielle dans le modèle culturel japonais : le cas de Sumitomo Electric
Authors: Leboulanger Christine , Perdrieu-Maudière Françoise
Published: February 2017

A partir d’une analyse technométrique des brevets déposés par Sumitomo dans le domaine des supraconducteurs, cette étude empirique révèle les mécanismes de valorisation de la création. Son modèle d’affaires privilégie quatre axes : la motivation, la collaboration, le résultat et la reconnaissance. La citation des inventeurs et la co-titularité des brevets sont les principaux leviers. Aussi dans un contexte culturel et légal en pleine mutation, ce leader en haute technologie a-t-il perçu la nécessité d’attirer et de garder des ressources humaines de haute qualité.
La profitabilité dans le premier plan d’affaires imprimé en France (1569-1612)
Authors: Marco Luc , Noumen Robert
Published: February 2017

Quand a été édité le premier plan d’affaires français ? Sur quel type d’entreprise portait-il ? Le processus de retour d’investissement était-il dans le titre ? Autant de questions qu’il faut se poser pour faire une histoire des plans d’affaires en France. Et comme ce document est imprimé au plus fort de la révolution agricole qui secoue l’Europe en cette fin de la Renaissance, il faut aussi s’intéresser aux aspects gestionnaires du texte : que sont les coûts, les charges, les produits et les besoins visés ? Les profits annoncés sont-ils réalistes ?
Les imaginaires : le terreau de la créativité
Authors: Torregrosa Laborie Apolline
Published: February 2017

Cet article présente la relation des imaginaires avec la notion de création. En partant du constat que la création est souvent associée à une idée, à un concept, nous prônons la dimension du sensible dans les processus de créativité qui nous relient à l’inconscient et aux imaginaires. Ainsi, nous considérons les imaginaires comme le terreau de la créativité, où le sensible reprend sa place par rapport à la rationalisation de notre mode de pensée moderne. En cela, la création participe d’une énergie collective qui se répète, se renouvelle et s’étend dans le temps. Dès lors, l’enseignement artistique, visant à former à la création, se présente comme un processus d’apprentissage collectif où les imaginaires constituent un territoire de mise en commun.
Le leader charismatique en Amérique latine. Le cas Carlos Menem
Authors: Stefanich Fernando
Published: February 2017

Le but de ce travail est de comprendre le phénomène du leader charismatique latino-américain. Nous nous proposons de décrypter la figure de Carlos Menem, politicien argentin qui remporta les élections présidentielles à deux reprises (1989 et 1995). Pour ce faire, nous avons mobilisé un arsenal théorique que nous avons puisé dans la sociologie et plus particulièrement dans la sociologie de l’imaginaire car l’histoire de l’humanité est, comme l’indique Cornelius Castoriadis, l’histoire de l’imaginaire humain et de ses œuvres.
A search for the common ground between Tic; Obsessive-compulsive and Autism Spectrum Disorders: part I, Tic disorders
Authors: Barnhill Jarrett , Bedford James , Crowley James , Soda Takahiro
Published: February 2017

This article is the first of four articles designed to explore the complex interrelationship between Autism Spectrum Disorders (ASD); Obsessive compulsive and Related Disorders (OCRD) and Tic Disorders/Tourette's Syndrome (TD/TS). We begin with an overview TD/TS and follow-up with reviews of OCRD and ASD. The final article in this series represents a synthesis of the neurobiological and genetic markers shared by patients presenting with all three syndromes. The goal is to describe the complex endophenotype of these patients in an effort to better define gene markers that underlie these heterogeneous clinical syndromes. Tic disorders (TD) are a collection of hyperkinetic movements that begin in early childhood. Tics are transient for most affected preschool children but a subgroup development persistent movements or progress to develop Tourette Syndrome (TS). TDs as a group display high heritability rates but definitive gene markers still elude us. The difficulty defining genetic markers is in large part due to the diverse neurodevelopmental trajectory, changing topography and typology, development of a broad spectrum of neurocognitive and behavioral complications, and a mixed pattern of psychiatric comorbidities.
Bajos niveles de variación isoenzimática en las poblaciones sureñas del arbusto endémico de Corea Sophora koreensis (Fabaceae): implicaciones para su conservación
Authors: Chung M. Y. , Chung M. G.
Published: February 2017

Se investigó la variación isoenzimática del arbusto raro Sophora koreensis en el condado de Yanggu (Corea del Sur), en el extremo sur de su área de distribución. Para obtener información sobre los procesos ecológicos a nivel del paisaje, se estudiaron dos o tres poblaciones para cada una de las cuatro localidades (en total, 10 poblaciones) en un radio de unos 6 km. Se encontraron bajos niveles de variación genética intra-poblacional (%P = 13,6, A = 1,14 y He = 0,026) y un grado moderado de diferenciación genética entre poblaciones (FST = 0,203). El análisis de la varianza molecular (AMOVA) reveló un porcentaje sustancialmente mayor de variación entre poblaciones dentro cada una de las localidades (17%) que entre localidades (5%). No hubo una relación significativa entre la divergencia genética y el logaritmo de la distancia geográfica entre pares de poblaciones (r = 0,032, P = 0,842). Estos resultados sugieren un flujo genético limitado entre poblaciones dentro de las localidades, además de indicar que la mejor estrategia para la preservación de la diversidad genética de S. koreensis es la conservación del máximo número de poblaciones posible.
Low clonal propagation in Atlantic and Mediterranean populations of the red gorgonian Paramuricea clavata (Octocorallia)
Authors: Pilczynska Joanna , Boavida Joana , Cocito Silvia , Lombardi Chiara , Peirano Andrea , Queiroga Henrique
Published: February 2017

Clonal propagation is a common feature of benthic marine organisms. In the present study, we investigated the contribution of clonal reproduction in the red gorgonian Paramuricea clavata. Mediterranean populations of P. clavata were severely affected by mass mortality events caused by increased water temperature in 1999 and 2003. The populations are characterized by slow growth and episodic recruitment, but after the observed mortalities, an unexpectedly high recovery rate was observed in the severely affected populations from the Ligurian Sea, NW Mediterranean. Ten years after the last mortality event, we investigated the contribution of clonal propagation in populations from the Ligurian Sea, where some populations were highly affected by mass mortality events, and from the Atlantic, where mortality was never observed. All individuals were genotyped for nine microsatellite loci. The contribution of clonal reproduction varied from 0% to 13% and did not differ significantly between affected and unaffected populations. We confirm by using genetic markers that clonal propagation in P. clavata is not common, and that the contribution of clones is too low to play an important role in red gorgonian reproduction and cannot contribute to population recovery at sites that have been affected by mass mortality events.
The Impact of Augmented Reality and Virtual Reality Study Material in the Future of Learning
Authors: Guazzaroni Giuliana
Published: February 2017

Mobile augmented reality offers important opportunities for learning. Moreover, it may represent new challenges for teachers and researchers. Implementing an augmented reality (AR) or a virtual reality (VR) learning experience involves the exploration of unusual pedagogical and technological boundaries. According to recent studies, it would be more productive to consider the augmented reality as a concept rather than an educational technology (Guazzaroni, 2015; Wu et al., 2013). This chapter is devoted to analyze a high school class of 23 students invited to use AR and VR tools to create their own study material. They are about 16-year-old attending Istituto Tecnico Tecnologico “Eustachio Divini” in San Severino Marche, Italy. The basic idea of the trial is to create a short printed document augmented with the technologies of AR and VR. The experience is evaluated using tests and direct observation. The aim is to observe the impact of augmented mobile learning and to demonstrate that AR and VR study material may represent a new communication object adequate to teach future students.
Augmented Reality in K-12 Education
Authors: Leighton Lisabeth J. , Crompton Helen
Published: February 2017

Today the world revolves around technology in daily tasks. Society uses technology to communicate, trade, for business, politics, and to education. Through education, Augmented Reality (AR) takes on a new purpose. AR enables students to reach a higher level of education, and teachers to efficiently engage students to see real-world situations. The use of technology in classrooms is currently on the rise; but how are teachers using AR within their classrooms to engage and education children? This chapter discusses literature and research supporting the AR affordances in K-12 Education.
Transmedia Storytelling as an Educational Strategy
Authors: Rodrigues Patricia , Bidarra José
Published: February 2017

This paper proposes the use of transmedia storytelling in an educational context. Transmedia stories are perceived as opportunities to create a new learning scenario that allows for the development of innovative student-centred educational practices, and the implementation of collaborative strategies that ultimately meet the 21st-century students' needs. Through the discussion of a transmedia learning project targeted to English as Second Language students, this paper attempts to provide insight on how learning activities and strategies can be embedded in the digital narrative and experience layers of a storyworld.
MOOCs as Supplement of Informal Education
Authors: Pankowska Malgorzata B.
Published: February 2017

The contribution covers discussion on informal university learning, which is a part of heutagogy. In the paper, the university learning is considered as autopoietic organization development as well as development of business organization strongly dependent on external knowledge resources. In general, university education space covers formal, informal, and non-formal learning. Nowadays, informal learning has an excellent opportunity for development, because of Web 2.0 ideas and solutions. In the paper, the architecture of informal learning environment is visualized in ArchiMate 4.0 beta version language. The main goal of the paper is to present informal learning architecture as supplement to the formal learning. The MOOCs (massive open online courses) are included in the architecture model for informal learning support.
Text to Sign Language Translation System
Authors: Goyal Lalit , Goyal Vishal
Published: February 2017

Many machine translation systems for spoken languages are available, but the translation system between the spoken and Sign Language are limited. The translation from Text to Sign Language is different from the translation between spoken languages because the Sign Language is visual spatial language which uses hands, arms, face, and head and body postures for communication in three dimensions. The translation from text to Sign Language is complex as the grammar rules for Sign Language are not standardized. Still a number of approaches have been used for translating the Text to Sign Language in which the input is the text and output is in the form of pre-recorded videos or the animated character generated by computer (Avatar). This paper reviews the research carried out for automatic translation from Text to the Sign Language.
Efficient Energy Saving Cryptographic Techniques with Software Solution in Wireless Network
Authors: Sawlikar Alka Prasad , Khan Zafar Jawed , Akojwar Sudhir Gangadharrao
Published: February 2017

To reduce communication costs, to protect our data from eavesdropping and from unauthorized users, cryptographic algorithms are used. Cryptographic module has to be developed for combining the operation of compression and encryption synchronously on the file. The information file is preliminary processed and then converts into one intermediary form so that it can be compressed with better efficiency and security. In this paper an optimized approaching coding technique which deals with both the issues of size and security is introduced and characterized experimentally using the performance measurement approach java in which file of any data length can be practically compressed and encrypted using new encryption technique and a novel energy saving technique in wireless communication network with efficient hardware solution is presented. To improve the strength and capability of algorithms and to compress the transmitted data an intelligent and reversible conversion technique is applied.
Cyberbullying Bystanders
Authors: Campbell Marilyn Anne , Whiteford Chrystal , Duncanson Krystle , Spears Barbara , Butler Des , Slee Phillip Thomas
Published: February 2017

Cyberbullying is a relatively new and serious form of bullying with negative social and emotional effects on both victims and perpetrators. Like traditional bullying, cyberbullying is a social phenomenon and often unfolds in the context of a large network of bystanders. This study examined gender and age of cyberbullying bystanders out of 2109 upper primary and secondary school students in Australia. The actions the bystanders took when a peer was cybervictimised were analysed. The results of the study suggested bystanders to cyberbullying were most likely not to do anything or help the person cyberbullied at the time. Girls were more prosocial in helping students who were cyberbullied than boys. In addition, those students who knew someone who was bullied in both ways were more likely to tell their parents and friends about it than those who knew someone who was cyberbullied only. Implications for prevention and intervention in cyberbullying are discussed.
Microstructural Evolution of Composite 8 WC-(Co, Ni): Effect of the Addition of SiC
Authors: Miranda Fabio , Rodrigues Daniel , Nakamoto Francisco Yastami , Frajuca Carlos , dos Santos Givanildo Alves , Couto Antônio Augusto
Published: February 2017

Tungsten carbide (WC) based cemented carbides, also called hardmetals, are a family of composite materials consisting of carbide ceramic particles embedded in a metallic binder. They are classified as metal matrix composites (MMCs) because the metallic binder is the matrix that holds the bulk material together [1]. WC based composites are used in applications where a good combination of hardness and toughness are necessary [2]. It is usual to add more components to tailor the microstructure of the WC-(Co, Ni) system. The hardness for the cemented carbides based on nickel, increases significantly because of the addition of reinforcements like SiC nanowhisker [3]. In this work, the SiC was considered as an additional component for the composite WC-8(Co, Ni). Four mixtures were prepared with SiC contents ranging from 0 to 3.0 wt%. These mixtures were pressed (200 MPa) and green samples with 25.2 mm of diameter and 40 g were produced. Sintering was carried out in Sinter-HIP furnace (20 bar). Two sintering temperatures were investigated, i.e. 1380 and 1420oC, and the sintering time considered was 60 minutes. The relative density, hardness, linear and volumetric shrinkage were determined. Microstructural evaluation was investigated by optical microscopy and scanning electron microscopy (SEM-FEG). The results showed that the addition of SiC promoted higher densification and grain size growth. The hardness was higher for samples with SiC, so solid solution hardening of the binder was more effective than WC grain size growth.
Geology and coal resources of the Sheerness Coalfield, south-central Alberta, volume 1
Authors: Smith G G
Published: February 2017

The commercially significant subbituminous coal resources within the lower Horseshoe Canyon Formation near Sheerness, Alberta, were examined in the context of Canada's National Coal Inventory program. A correlation framework comprised of four coal zones and two
marker horizons was established using data from 1228 borehole sites, with an aggregate drilled penetration in excess of 22,000 m. This framework forms the basis of the geologic model which defines geometries and distributions of coal seams. A verified computer-processable database was produced and
computer-assisted techniques were applied to all phases of the study. The database and resource estimates can be readily updated and revised. In addition to providing the framework for estimating resources quantities, the geologic model can also be used to assist the planning of efficient resource
exploitation and to predict geological conditions in laterally equivalent strata where less substantive data are available.
Factors which controlled the geometries and distributions of the coal seams were interpreted on the basis of observed lateral and vertical distributions of lithologies in interseam rock intervals. The Sheerness Coalfield is comprised mainly of strata deposited on the lower delta plain of a
fluvially-dominated delta complex. Subaerial exposure of this delta plain resulted in peat accreting paludal conditions. Peat accretion was interrupted at various times by drowning and burial beneath noncoal clastic sediments, in most cases interpreted to be the result of overbank or crevasse splay
flooding onto an interdistributary floodplain.
Resources totalling approximately 190 million tonnes of subbituminous C coal have been identified and categorized according to relative exploitation potential and assurance of existence. The composition and properties of the coal have been assessed on the basis of analysed coal quality attributes
from 682 sampled plies. These samples were derived from 496 coal zone intersections from which drill cores were recovered.
The enigmatic rings of the James Bay Lowland: a probable geological origin
Authors: Veillette J J , Giroux J F
Published: February 2017

A survey of airphotos for a large band of Eastern Canada extending from Manitoba to Newfoundland between Lat. 48° N and 52° N has revealed a massive concentration of whitish ring-shaped features, a few tens of metres up to 2 km in diameter, in the
organic, black spruce-covered, poorly drained terrain of the James Bay and Hudson Bay Lowland, and on Anticosti Island in the Gulf of Saint Lawrence. The light-coloured tone is related to the more open tree cover and the presence of annular bogs within the rings which contrasts with the surrounding
denser tree cover. Ground investigation has shown that the rings coincide with shallow annular depressions in the mineral soil that have been infilled with peat, or covered by shrubs and trees that can tolerate a water table close to the surface. The origin of the rings is considered by some to be
the result of biological processes and by others, of geological processes. The radial expansion of a fungus that infects and kills trees thus producing rings in the vegetation, is the basis for the biological hypothesis, while geochemical processes in the soil related to the underlying bedrock
geology is the basis for the geological hypothesis. A detailed botanical and dendrochronological investigation carried out in 7 rings in northern Abitibi does not support the radial expansion model and shows that the rings are static features. The rings form a belt extending from north of Lake
Nipigon to western Quebec, that closely correlates with the extent of calcareous soils. This, along with the presence of shallow depressions in the calcareous substrate beneath the rings, and the lack of periglacial or geological processes at the surface that could account for the rings, suggest
mechanisms acting from below. The depressions may result from carbonate depletion related to geochemical mechanisms in the soil generated at depth in the bedrock geology. Thick, up to 3 m, peat sequences in some annular bogs indicate that the depressions beneath the rings have been formed hundreds,
perhaps thousands of years ago, to allow that much peat to accumulate. Thus, the rings have been stationary for long periods of time.
The correlation between relationship value and business expansion in the South African automotive supply chains
Authors: Tolmay Aletta S.
Published: February 2017

Background: The South African automotive industry includes complete supply chains. The South African automotive supply chain stakeholders operating within the global arena are faced with opportunities as well as challenges. The South African government supports the automotive industry and encourages the vision to drastically expand the industry by the year 2020. However, having to adhere to strict prescriptions from customers regarding product quality and logistics, automotive component suppliers have only the actual relationship with customers through which value can be added. Literature acknowledges the importance of relationship value and agrees that it results in business retention. However, literature fails to prove whether relationship value can result in business expansion where more business is generated.Objectives: The objective of this article was to provide a better understanding of how to optimise relationship value within the South African automotive supply chains between Tier 1 and Tier 2 suppliers. Furthermore, the correlation between relationship value and business expansion was tested through a linear regression model. It was also important to determine whether supply chain stakeholders from different countries of origin and cultural backgrounds attach the same importance to relationship value.Method: This article reports on research which followed a positivistic paradigm, through a quantitative study undertaken in the South African automotive supply chains. Members of the National Association for Automobile Component and Allied Manufacturers of South Africa (NAACAM), defined as Tier 1 suppliers, were approached to describe their best Tier 2 suppliers. Questions relating to relationship value and business expansion were asked via a closed-ended questionnaire. The aim was to obtain the perceptions of Tier 1 suppliers of their best Tier 2 suppliers in terms of relationship value and business expansion. The data were analysed through a linear regression model.Results: It was found that relationship value directly correlates with business expansion and is therefore highly regarded as important by Tier 1 suppliers in terms of their Tier 2 suppliers in the South African automotive supply chains. Notwithstanding the different countries of origin, respondents are in agreement regarding the importance of relationship value.Conclusion: As the South African automotive industry plays an important role in the South African economy, all efforts should be made to retain and expand the industry. The industry is characterised by a difficult economy, and supply chain role players should constantly investigate new strategies to gain a competitive advantage. It was found that there was a high regard for relationship value which could result in business expansion. Automotive component suppliers are encouraged to invest in a relationship value governance strategy to actively pursue added benefits for all stakeholders.
Hose Assemblies, Rubber, Hydraulic, Steel Wire Reinforced - Part 2: Ordering Information
Authors:   Hydraulic Hose and Hose Fittings Committee
Published: February 2017

This SAE Standard covers ordering information for steel wire reinforced rubber hose assemblies using connectors specified in SAE J516 for use in hydraulic systems using petroleum based hydraulic fluids with maximum working pressures of 1.7 to 42 MPa. See SAE J1754-2, Table 8 for hose operating temperature ranges and identification codes.

Note: Working pressure is defined as maximum system pressure.
Standard Metrology for Vehicular Displays
Authors:   Vehicular Flat Panel Display Standards Committee
Published: February 2017

The scope of this SAE Standard is to provide methods to determine display optical performance in all typical automotive ambient light illumination - with focus on High Ambient Contrast Ratio, which is critical for display legibility in a sunshine environment. It covers indoor measurements and simulated outdoor lighting.

It is not the scope of this document to set threshold values for automotive compliance, however some recommended values are presented for reference.
Identification of Self-Propelled Sweepers and Cleaning Equipment Part 1--Machines with a Gross Vehicle Mass Greater than 5000 kg
Authors:   MTC2, Sweeper, Cleaner, and Machinery
Published: February 2017

This SAE Standard applies to all self-propelled machines with a gross vehicle mass greater than 5000kg that are utilized to clean material from highways, parking lots, airfield runways, outside paved areas that are principally exposed to vehicular traffic. These machines may also be involved with road construction/repaving work. Primary methods for material removal and cleaning can be by mechanical, pneumatic, washing and flushing systems, or in a combination of any system.
SAE J2450 Supplemental Training Document
Authors:   Vehicle E E System Diagnostic Standards Committee
Published: February 2017

This supplement, which is a living document, is meant to provide both clients and translation suppliers with some suggestions for integrating SAE J2450 into their business practices. It is intended for the use of clients, trainers who wish to develop new evaluators, and those who wish to self-train.
Recommended Test Procedure for Powered Gas Brake Control Systems
Authors:   Adaptive Devices Standards Committee
Published: February 2017

This test procedure is for qualification testing of powered gas/brake control systems to assure compliance with the Recommended Practices for these assistive devices. A powered gas/brake control system which passes all of the tests shall be considered to be in compliance with the Recommended Practices. The control shall pass all tests denoted by a “shall” in the Recommended Practice or the Recommended Test Procedure. All the results of all tests and requirements denoted by a “should” shall be noted, but failure to comply will not constitute failure to pass the test.
Procedure for Measuring System COP [Coefficient of Performance] of a Mobile Air Conditioning System on a Test Bench
Authors:   Interior Climate Control MAC Supplier Committee
Published: February 2017

This Standard applies to motor driven mobile air conditioning systems consisting of one in-car air coil (evaporator), a compressor, an expansion device, and one under-hood air coil (condenser).
Definition and Measurement of Torque Biasing Differentials
Authors:   Drivetrain Standards Committee
Published: February 2017

This SAE Recommended Practice covers passive torque biasing axle and center differentials used in passenger car and light truck applications. Differentials are of the bevel gear, helical gear and planetary types although other configurations are possible.
Microphysical properties of frozen particles inferred from Global Precipitation Measurement (GPM) Microwave Imager (GMI) polarimetric measurements
Authors: Gong Jie , Wu Dong L.
Published: February 2017

Abstract. Scattering differences induced by frozen particle microphysical properties are investigated, using the vertically (V) and horizontally (H) polarized radiances from the Global Precipitation Measurement (GPM) Microwave Imager (GMI) 89 and 166 GHz channels. It is the first study on frozen particle microphysical properties on a global scale that uses the dual-frequency microwave polarimetric signals.From the ice cloud scenes identified by the 183.3 ± 3 GHz channel brightness temperature (Tb), we find that the scattering by frozen particles is highly polarized, with V–H polarimetric differences (PDs) being positive throughout the tropics and the winter hemisphere mid-latitude jet regions, including PDs from the GMI 89 and 166 GHz TBs, as well as the PD at 640 GHz from the ER-2 Compact Scanning Submillimeter-wave Imaging Radiometer (CoSSIR) during the TC4 campaign. Large polarization dominantly occurs mostly near convective outflow regions (i.e., anvils or stratiform precipitation), while the polarization signal is small inside deep convective cores as well as at the remote cirrus region. Neglecting the polarimetric signal would easily result in as large as 30 % error in ice water path retrievals. There is a universal bell curve in the PD–TBV relationship, where the PD amplitude peaks at  ∼  10 K for all three channels in the tropics and increases slightly with latitude (2–4 K). Moreover, the 166 GHz PD tends to increase in the case where a melting layer is beneath the frozen particles aloft in the atmosphere, while 89 GHz PD is less sensitive than 166 GHz to the melting layer. This property creates a unique PD feature for the identification of the melting layer and stratiform rain with passive sensors.Horizontally oriented non-spherical frozen particles are thought to produce the observed PD because of different ice scattering properties in the V and H polarizations. On the other hand, turbulent mixing within deep convective cores inevitably promotes the random orientation of these particles, a mechanism that works effectively in reducing the PD. The current GMI polarimetric measurements themselves cannot fully disentangle the possible mechanisms.
Aerosol Effects on the Development of Cumulus Clouds over the Tibetan Plateau
Authors: Zhou Xu , Bei Naifang , Liu Hongli , Cao Junji , Xing Li , Lei Wenfang , Molina Luisa T. , Li Guohui
Published: February 2017

Abstract. The aerosol-cloud interaction over the Tibetan Plateau has been investigated using a cloud-resolving weather research and forecasting model with a two-moment bulk microphysical scheme including aerosol effects on cloud condensation nuclei and ice nuclei. Two types of cumulus clouds with a similar convective available potential energy, occurring over the Tibetan Plateau (Cu-TP) and North China Plain (Cu-NCP) in August 2014, are simulated to explore the response of convective clouds to aerosols. A set of aerosol profiles is used in the simulations, with the surface aerosol number concentration varying from 20 to 9000 cm−3 and the sulfate mass concentration varying from 0.02 to 9.0 µg cm−3. Increasing aerosol concentrations generally enhances the cloud core updraft and maximum updraft, intensifying convections in Cu-TP and Cu-NCP. However, the core updraft is much stronger in Cu-TP than Cu-NCP, because of the early occurrence of the glaciation process in Cu-TP that is triggered at an elevation above 4000 m. The precipitation increases steadily with aerosol concentrations in Cu-NCP, caused by the suppression of the warm rain but efficient mix-phased precipitation due to the reduced cloud droplet size. The precipitation in Cu-TP also increases with aerosol concentrations, but the precipitation enhancement is not substantial compared to that in Cu-NCP with high aerosol concentrations. The aerosol-induced intensification of convections in Cu-TP not only facilitates the precipitation, but also transports more ice-phase hydrometeors into the upper troposphere to decrease the precipitation efficiency. Considering the very clean atmosphere over the Tibetan Plateau, elevated aerosol concentrations can remarkably enhance convections due to its specific topography, which not only warms the middle troposphere to influence the Asian summer monsoon, but also delivers hydrometeors into the upper troposphere to allow more water vapor to travel into the lower stratosphere.
floodX: Urban flash flood experiments monitored with conventional
and alternative sensors
Authors: Moy de Vitry Matthew , Dicht Simon , Leitão João P.
Published: February 2017

Abstract. The datasets described in this paper are intended to provide a basis on which new methods for monitoring and modelling urban pluvial flash floods can be developed. Pluvial flash floods are a growing hazard to property and inhabitants' well-being in urban areas. However, the lack of appropriate data collection methods is often cited as an impediment for reliable flood modelling, thereby hindering the improvement of flood risk mapping and early warning systems. In the floodX project, 37 controlled urban flash floods were generated and monitored in a flood response training facility with state-of-the-art conventional sensors in the drainage network, as well as alternative sensors on the surface, namely temperature probes and surveillance cameras. With these data, the technical feasibility of utilizing citizen science and computer vision for urban flood monitoring can be explored. The floodX project stands out as the largest documented flood experiment of its kind, providing both conventional and alternative data types in parallel and at high temporal resolution. Besides describing the flash flood experiments and the resulting datasets, weaknesses in the data and lessons learned are also described. The main data package is openly available at http://doi.org/10.5281/zenodo.236878.
Stability analysis of geomagnetic baseline data obtained at
Cheongyang observatory in Korea
Authors: Amran Shakirah M. , Kim Wan-Seop , Cho Heh Ree , Park Po Gyu
Published: February 2017

Abstract. The stabillity of baselines produced by Cheongyang (CYG) observatory from a period of 2014 to 2016 is analysed. Step height of higher than 5 nT were found in H and Z components in 2014 and 2015 due to magnetic noise in the absolute measurement hut. In addition, a periodic modulation behaviour observed in the H and Z baseline curves was related to temperature variation of about 20 °C in the fluxgate magnetometer hut. The quality of the baselines was improved by correcting the discontinuity in the H and Z baselines. Moreover, the stability of the both baselines was also improved by about 6 nT/year from 10 nT/year by performing the temperature effect correction.
FROM TLS POINT CLOUDS TO 3D MODELS OF TREES:
A COMPARISON OF EXISTING ALGORITHMS FOR 3D TREE RECONSTRUCTION
Authors: Bournez E. , Landes T. , Saudreau M. , Kastendeuch P. , Najjar G.
Published: February 2017

Abstract. 3D models of tree geometry are important for numerous studies, such as for urban planning or agricultural studies. In climatology, tree models can be necessary for simulating the cooling effect of trees by estimating their evapotranspiration. The literature shows that the more accurate the 3D structure of a tree is, the more accurate microclimate models are. This is the reason why, since 2013, we have been developing an algorithm for the reconstruction of trees from terrestrial laser scanner (TLS) data, which we call TreeArchitecture. Meanwhile, new promising algorithms dedicated to tree reconstruction have emerged in the literature. In this paper, we assess the capacity of our algorithm and of two others -PlantScan3D and SimpleTree- to reconstruct the 3D structure of trees. The aim of this reconstruction is to be able to characterize the geometric complexity of trees, with different heights, sizes and shapes of branches. Based on a specific surveying workflow with a TLS, we have acquired dense point clouds of six different urban trees, with specific architectures, before reconstructing them with each algorithm. Finally, qualitative and quantitative assessments of the models are performed using reference tree reconstructions and field measurements. Based on this assessment, the advantages and the limits of every reconstruction algorithm are highlighted. Anyway, very satisfying results can be reached for 3D reconstructions of tree topology as well as of tree volume.
EVALUATING THE POTENTIAL OF IMAGING ROVER
FOR AUTOMATIC POINT CLOUD GENERATION
Authors: Cera V. , Campi M.
Published: February 2017

Abstract. The paper presents a phase of an on-going interdisciplinary research concerning the medieval site of Casertavecchia (Italy). The project aims to develop a multi-technique approach for the semantic - enriched 3D modeling starting from the automatic acquisition of several data. In particular, the paper reports the results of the first stage about the Cathedral square of the medieval village. The work is focused on evaluating the potential of an imaging rover for automatic point cloud generation. Each of survey techniques has its own advantages and disadvantages so the ideal approach is an integrated methodology in order to maximize single instrument performance. The experimentation was conducted on the Cathedral square of the ancient site of Casertavecchia, in Campania, Italy.
DIGITAL INVASIONS: FROM POINT CLOUDS TO HISTORICAL BUILDING OBJECT MODELING (H-BOM) OF A UNESCO WHL SITE
Authors: Chiabrando F. , Lo Turco M. , Santagati C.
Published: February 2017

Abstract. The paper here presented shows the outcomes of a research/didactic activity carried out within a workshop titled "Digital Invasions. From point cloud to Heritage Building Information Modeling" held at Politecnico di Torino (29th September–5th October 2016). The term digital invasions refers to an Italian bottom up project born in the 2013 with the aim of promoting innovative digital ways for the enhancement of Cultural Heritage by the co-creation of cultural contents and its sharing through social media platforms. At this regard, we have worked with students of Architectural Master of Science degree, training them with a multidisciplinary teaching team (Architectural Representation, History of Architecture, Restoration, Digital Communication and Geomatics). The aim was also to test if our students could be involved in a sort of niche crowdsourcing for the creation of a library of H-BOMS (Historical-Building Object Modeling) of architectural elements.
POINT CLOUD DERIVED FROMVIDEO FRAMES: ACCURACY ASSESSMENT IN RELATION TO TERRESTRIAL LASER SCANNINGAND DIGITAL CAMERA DATA
Authors: Delis P. , Zacharek M. , Wierzbicki D. , Grochala A.
Published: February 2017

Abstract. The use of image sequences in the form of video frames recorded on data storage is very useful in especially when working with large and complex structures. Two cameras were used in this study: Sony NEX-5N (for the test object) and Sony NEX-VG10 E (for the historic building). In both cases, a Sony α f = 16 mm fixed focus wide-angle lens was used. Single frames with sufficient overlap were selected from the video sequence using an equation for automatic frame selection. In order to improve the quality of the generated point clouds, each video frame underwent histogram equalization and image sharpening. Point clouds were generated from the video frames using the SGM-like image matching algorithm. The accuracy assessment was based on two reference point clouds: the first from terrestrial laser scanning and the second generated based on images acquired using a high resolution camera, the NIKON D800. The performed research has shown, that highest accuracies are obtained for point clouds generated from video frames, for which a high pass filtration and histogram equalization had been performed. Studies have shown that to obtain a point cloud density comparable to TLS, an overlap between subsequent video frames must be 85 % or more. Based on the point cloud generated from video data, a parametric 3D model can be generated. This type of the 3D model can be used in HBIM construction.
FEASIBILITY STUDY OF LOW-COST IMAGE-BASED HERITAGE DOCUMENTATION
IN NEPAL
Authors: Dhonju H. K. , Xiao W. , Sarhosis V. , Mills J. P. , Wilkinson S. , Wang Z. , Thapa L. , Panday U. S.
Published: February 2017

Abstract. Cultural heritage structural documentation is of great importance in terms of historical preservation, tourism, educational and spiritual values. Cultural heritage across the world, and in Nepal in particular, is at risk from various natural hazards (e.g. earthquakes, flooding, rainfall etc), poor maintenance and preservation, and even human destruction. This paper evaluates the feasibility of low-cost photogrammetric modelling cultural heritage sites, and explores the practicality of using photogrammetry in Nepal. The full pipeline of 3D modelling for heritage documentation and conservation, including visualisation, reconstruction, and structure analysis, is proposed. In addition, crowdsourcing is discussed as a method of data collection of growing prominence.
MULTI-SOURCE 3D MODELS SUPPORTING ULTRASONIC TEST TO INVESTIGATE AN EGYPTIAN SCULPTURE OF THE ARCHAEOLOGICAL MUSEUM IN BOLOGNA
Authors: Di Pietra V. , Donadio E. , Picchi D. , Sambuelli L. , Spanò A.
Published: February 2017

Abstract. The paper presents the workflow and the results of an ultrasonic 3D investigation and a 3D survey application aimed at the assessment of the internal integrity of an ancient sculpture. The work aimed at highlighting the ability of methods devoted to the 3D geometry acquisition of small objects when applied to diagnosis performed by geophysical investigation. In particular, two methods widely applied for small objects modelling are considered and compared, the digital Photogrammetry with the Structure from Motion (SFM) technique and hand-held 3D scanners. The study concludes with the aim to enhance the final graphical representation of the tomographic results and to subject the obtained results to a quantitative analysis. The survey is applied to the Egyptian naophorous statue of Amenmes and Reshpu, which dates to the reign of Ramses II (1279-1213 BC) or later and is now preserved in the Civic Archaeological Museum in Bologna. In order to evaluate the internal persistency of fractures and visible damages, a 3D Ultrasonic Tomographic Imaging (UTI) test has been performed and a multi-sensor survey (image and range based) was conducted, in order to evaluate the locations of the source and receiver points as accurate as possible The presented test allowed to evaluate the material characteristics, its porosity and degradation state, which particularly affect the lower part of the statue. More in general, the project demonstrated how solution coming from the field of 3D modelling of Cultural Heritage allow the application of 3D ultrasonic tomography also on objects with complex shapes, in addition to the improved representation of the obtained results.
CULTURAL HERITAGE THROUGH TIME: A CASE STUDY AT HADRIAN’S WALL, UNITED KINGDOM
Authors: Fieber K. D. , Mills J. P. , Peppa M. V. , Haynes I. , Turner S. , Turner A. , Douglas M. , Bryan P. G.
Published: February 2017

Abstract. Diachronic studies are central to cultural heritage research for the investigation of change, from landscape to architectural scales. Temporal analyses and multi-temporal 3D reconstruction are fundamental for maintaining and safeguarding all forms of cultural heritage. Such studies form the basis for any kind of decision regarding intervention on cultural heritage, helping assess the risks and issues involved. This article introduces a European-wide project, entitled "Cultural Heritage Through Time", and the case study research carried out as a component of the project in the UK. The paper outlines the initial stages of the case study of landscape change at three locations on Hadrian’s Wall, namely Beckfoot Roman Fort, Birdoswald Roman Fort and Corbridge Roman Station, all once part of the Roman Empire’s north-west frontier. The main aim of the case study is to integrate heterogeneous information derived from a range of sources to help inform understanding of temporal aspects of landscape change. In particular, the study sites are at risk from natural hazards, notably erosion and flooding. The paper focuses on data collection and collation aspects, including an extensive archive search and field survey, as well as the methodology and preliminary data processing.
AUGMENTED REALITY IN ARCHITECTURE: REBUILDING ARCHEOLOGICAL HERITAGE
Authors: de la Fuente Prieto J. , Castaño Perea E. , Labrador Arroyo F.
Published: February 2017

Abstract. With the development in recent years of augmented reality and the appearance of new mobile terminals and storage bases on-line, we find the possibility of using a powerful tool for transmitting architecture. This paper analyzes the relationship between Augmented Reality and Architecture. Firstly, connects the theoretical framework of both disciplines through the Representation concept. Secondly, describes the milestones and possibilities of Augmented Reality in the particular field of archaeological reconstruction. And lastly, once recognized the technology developed, we face the same analysis from a critical point of view, assessing their suitability to the discipline that concerns us is the architecture and within archeology.
3D RECORDING AND MODELLING OF MINING HERITAGE: THE MONSERRAT MINE, SIERRA MINERA OF CARTAGENA-LA UNIÓN, SOUTHEAST OF SPAIN
Authors: García-León J. , García Martín A. , Torres Picazo M. , Fernández J.
Published: February 2017

Abstract. Mining heritage is essential to understand the history, landscape and cultural manifestations linked to mining industry. The Mountain Range of Cartagena-La Unión is one of the most relevant old Mediterranean mining areas, with mining sites that were already exploited before the Carthaginian domination. It was declared a Site of Cultural Interest in 2009. Our aim is to document and to enhance its premises, which are currently in a bad state of preservation and have been plundered. The methodology that we suggest combines various techniques, such as laser scanning, LIDAR and digital photogrammetry, in order to obtain the best results based on the characteristics of the objects to be inventoried. For this study, we have chosen an area in which a digital model has been created by means of terrestrial laser scanning and airborne LIDAR, then we have textured it with the images taken. With this model, it is possible to measure the deterioration and displacement suffered by its elements, in particular, the chimney and the boiler room.
SURVEYING, MODELING AND 3D REPRESENTATION OF A WRECK FOR DIVING PURPOSES: CARGO SHIP “VERA”
Authors: Ktistis A. , Tokmakidis P. , Papadimitriou K.
Published: February 2017

Abstract. This paper presents the results from an underwater recording of the stern part of a contemporary cargo-ship wreck. The aim of this survey was to create 3D representations of this wreck mainly for recreational diving purposes. The key points of this paper are: a) the implementation of the underwater recording at a diving site; b) the reconstruction of a 3d model from data that have been captured by recreational divers; and c) the development of a set of products to be used by the general public for the ex situ presentation or for the in situ navigation. The idea behind this project is to define a simple and low cost procedure for the surveying, modeling and 3D representation of a diving site. The perspective of our team is to repeat the proposed methodology for the documentation and the promotion of other diving sites with cultural features, as well as to train recreational divers in underwater surveying procedures towards public awareness and community engagement in the maritime heritage.