bluuebunny/crossref_metadata_2025 huggingface dataset:
In Situ Forming Gelatin Hydrogels-Directed Angiogenic Differentiation and Activity of Patient-Derived Human Mesenchymal Stem Cells
Authors: Lee Yunki , Balikov Daniel , Lee Jung , Lee Sue , Lee Seung , Lee Jong , Park Ki , Sung Hak-Joon
Published: August 2017

Directing angiogenic differentiation of mesenchymal stem cells (MSCs) still remains challenging for successful tissue engineering. Without blood vessel formation, stem cell-based approaches are unable to fully regenerate damaged tissues due to limited support for cell viability and desired tissue/organ functionality. Herein, we report in situ cross-linkable gelatin−hydroxyphenyl propionic acid (GH) hydrogels that can induce pro-angiogenic profiles of MSCs via purely material-driven effects. This hydrogel directed endothelial differentiation of mouse and human patient-derived MSCs through integrin-mediated interactions at the cell-material interface, thereby promoting perfusable blood vessel formation in vitro and in vivo. The causative roles of specific integrin types (α1 and αvβ3) in directing endothelial differentiation were verified by blocking the integrin functions with chemical inhibitors. In addition, to verify the material-driven effect is not species-specific, we confirmed in vitro endothelial differentiation and in vivo blood vessel formation of patient-derived human MSCs by this hydrogel. These findings provide new insight into how purely material-driven effects can direct endothelial differentiation of MSCs, thereby promoting vascularization of scaffolds towards tissue engineering and regenerative medicine applications in humans.
A Visual-Based Approach for Indoor Radio Map Construction Using Smartphones
Authors: Liu Tao , Zhang Xing , Li Qingquan , Fang Zhixiang
Published: August 2017

Localization of users in indoor spaces is a common issue in many applications. Among various technologies, a Wi-Fi fingerprinting based localization solution has attracted much attention, since it can be easily deployed using the existing off-the-shelf mobile devices and wireless networks. However, the collection of the Wi-Fi radio map is quite labor-intensive, which limits its potential for large-scale application. In this paper, a visual-based approach is proposed for the construction of a radio map in anonymous indoor environments. This approach collects multi-sensor data, e.g., Wi-Fi signals, video frames, inertial readings, when people are walking in indoor environments with smartphones in their hands. Then, it spatially recovers the trajectories of people by using both visual and inertial information. Finally, it estimates the location of fingerprints from the trajectories and constructs a Wi-Fi radio map. Experiment results show that the average location error of the fingerprints is about 0.53 m. A weighted k-nearest neighbor method is also used to evaluate the constructed radio map. The average localization error is about 3.2 m, indicating that the quality of the constructed radio map is at the same level as those constructed by site surveying. However, this approach can greatly reduce the human labor cost, which increases the potential for applying it to large indoor environments.
A 3D Laser Profiling System for Rail Surface Defect Detection
Authors: Xiong Zhimin , Li Qingquan , Mao Qingzhou , Zou Qin
Published: August 2017

Rail surface defects such as the abrasion, scratch and peeling often cause damages to the train wheels and rail bearings. An efficient and accurate detection of rail defects is of vital importance for the safety of railway transportation. In the past few decades, automatic rail defect detection has been studied; however, most developed methods use optic-imaging techniques to collect the rail surface data and are still suffering from a high false recognition rate. In this paper, a novel 3D laser profiling system (3D-LPS) is proposed, which integrates a laser scanner, odometer, inertial measurement unit (IMU) and global position system (GPS) to capture the rail surface profile data. For automatic defect detection, first, the deviation between the measured profile and a standard rail model profile is computed for each laser-imaging profile, and the points with large deviations are marked as candidate defect points. Specifically, an adaptive iterative closest point (AICP) algorithm is proposed to register the point sets of the measured profile with the standard rail model profile, and the registration precision is improved to the sub-millimeter level. Second, all of the measured profiles are combined together to form the rail surface through a high-precision positioning process with the IMU, odometer and GPS data. Third, the candidate defect points are merged into candidate defect regions using the K-means clustering. At last, the candidate defect regions are classified by a decision tree classifier. Experimental results demonstrate the effectiveness of the proposed laser-profiling system in rail surface defect detection and classification.
A Foot-Arch Parameter Measurement System Using a RGB-D Camera
Authors: Chun Sungkuk , Kong Sejin , Mun Kyung-Ryoul , Kim Jinwook
Published: August 2017

The conventional method of measuring foot-arch parameters is highly dependent on the measurer’s skill level, so accurate measurements are difficult to obtain. To solve this problem, we propose an autonomous geometric foot-arch analysis platform that is capable of capturing the sole of the foot and yields three foot-arch parameters: arch index (AI), arch width (AW) and arch height (AH). The proposed system captures 3D geometric and color data on the plantar surface of the foot in a static standing pose using a commercial RGB-D camera. It detects the region of the foot surface in contact with the footplate by applying the clustering and Markov random field (MRF)-based image segmentation methods. The system computes the foot-arch parameters by analyzing the 2/3D shape of the contact region. Validation experiments were carried out to assess the accuracy and repeatability of the system. The average errors for AI, AW, and AH estimation on 99 data collected from 11 subjects during 3 days were −0.17%, 0.95 mm, and 0.52 mm, respectively. Reliability and statistical analysis on the estimated foot-arch parameters, the robustness to the change of weights used in the MRF, the processing time were also performed to show the feasibility of the system.
A Reliable Handoff Mechanism for Mobile Industrial Wireless Sensor Networks
Authors: Ma Jian , Yang Dong , Zhang Hongke , Gidlund Mikael
Published: August 2017

With the prevalence of low-power wireless devices in industrial applications, concerns about timeliness and reliability are bound to continue despite the best efforts of researchers to design Industrial Wireless Sensor Networks (IWSNs) to improve the performance of monitoring and control systems. As mobile devices have a major role to play in industrial production, IWSNs should support mobility. However, research on mobile IWSNs and practical tests have been limited due to the complicated resource scheduling and rescheduling compared with traditional wireless sensor networks. This paper proposes an effective mechanism to guarantee the performance of handoff, including a mobility-aware scheme, temporary connection and quick registration. The main contribution of this paper is that the proposed mechanism is implemented not only in our testbed but in a real industrial environment. The results indicate that our mechanism not only improves the accuracy of handoff triggering, but also solves the problem of ping-pong effect during handoff. Compared with the WirelessHART standard and the RSSI-based approach, our mechanism facilitates real-time communication while being more reliable, which can help end-to-end packet delivery remain an average of 98.5% in the scenario of mobile IWSNs.
Trop grandes pour la RDA, trop petites pour le marché mondial : les grandes entreprises dans l’Est de l’Allemagne
Authors: Karlsch Rainer , Joly Hervé , Dupré Michèle
Published: August 2017

Après 1945, des sociétés soviétiques par actions (SAG) ont remplacé les anciens Konzerns en Allemagne de l’Est. La constitution de ces SAG marque, surtout dans l’industrie lourde, le début d’une transformation de la culture industrielle traditionnelle et des grandes entreprises. Dans les années 1950 et 1960, il existe en RDA une économie « plurisectorielle », dans laquelle le secteur étatisé connaît des tendances précoces à la concentration. Les avantages de cette « économie mixte » sont abandonnés avec la dernière vague de nationalisations de 1972 et la formation ultérieure de combinats dans toutes les branches, y compris dans l’industrie légère. L’économie maintenant strictement centralisée est plus facile à diriger du centre, ce qui contrarie à court terme les processus de crises, mais accélère plutôt à moyen terme le déclin économique.
Politique de performance énergétique des logements à Bruxelles : une logique industrielle structurellement inégalitaire
Authors: Neuwels Julie
Published: August 2017

Cet article propose une lecture des dimensions inégalitaires du « logement énergétiquement performant » en Région de Bruxelles-Capitale, établie à partir de l’analyse des fondements idéologiques des politiques publiques qui le formalisent : celle relative à l’accès au logement, d’une part, et celle visant la performance énergétique des bâtiments, d’autre part. L’objectif est de mettre en évidence les leviers, les tensions et les compromis inhérents à la rencontre de ces deux grands pans des politiques de l’habiter. Cette analyse entend contribuer aux études abordant les difficiles conjugaisons entre droit au logement décent et performance énergétique des bâtiments, en s’attachant à leur signification et aux valeurs qui les sous-tendent plutôt qu’à un diagnostic relatif à leur (in)efficacité sociale.
Un droit au logement à géométrie variable.Les ancrages sociospatiaux du Fonds solidarité logement
Authors: François Camille
Published: August 2017

Mises en place par la loi Besson du 31 mai 1990, les commissions Fonds solidarité logement ( fsl ) ont pour mission d’octroyer des aides monétaires et des mesures d’accompagnement social pour des ménages présentant des difficultés liées au logement (difficulté à faire face aux différents coûts d’accès à un logement, dette locative, etc.). Situé au croisement de la sociologie urbaine, de la sociologie des politiques sociales et de celle du pouvoir local, l’article propose une analyse comparée des pratiques de délibération et d’attribution des aides de trois commissions municipales d’un département francilien, afin de mettre en lumière les formes localement différenciées et les inégalités de traitement des ménages qui structurent la mise en œuvre de ce dispositif historique d’accès au droit au logement.
Les vertus de la violence. La légitimation d’un projet de rénovation urbaine par le néo-hygiénisme
Authors: Espinosa Horacio
Published: August 2017

Depuis l’arrivée du jeune parti politique Mouvement citadin à la mairie de Guadalajara, au Mexique, le besoin de repenser les politiques urbaines s’est imposé dans le calendrier politique et dans l’imaginaire local. Ainsi, dans l’équipe de travail du nouveau maire Enrique Alfaro, on trouve de nouveaux acteurs politiques provenant des organisations citoyennes qui se battaient pour le « droit à (vivre) la ville ». Pourtant, une fois au pouvoir, ils montrent le côté ségrégationniste de leurs propositions conservatrices, dans la ligne « des nouvelles gauches citoyennes ». Ce texte analyse les discours qui, pendant la première année de gouvernement, initié en juillet 2015, ont tenté de justifier l’expulsion violente des vendeurs ambulants du centre-ville et le harcèlement auprès des marchés traditionnels, les tianguis 1 . Ce « néo-hygiénisme » correspond à la résurgence de conceptions ségrégationnistes et racistes centenaires, dont on trouve la trace pendant la période coloniale, tandis que d’un autre côté se produit un discours « utopique » de régénération urbaine qui correspond à une certaine « idéologie de l’espace public » (Delgado, 2011) qui parallèlement se renforce au revival de ces politiques de fiscalisation de la population, dont résulte une transformation « de l’espace à vivre » en « espace dominé » (Lefebvre, 1974). Je montrerai que les arguments utilisés pour légitimer l’expulsion des vendeurs ambulants ont comme fondement une logique hygiéniste, qui fonctionne comme recours idéologique pour masquer d’importants intérêts économiques qui visent à gentrifier le centre-ville à travers des « projets stratégiques » et de « régénération urbaine ».
Écotaxe : retour sur l’échec d’une réforme environnementale
Authors: Van Cornewal Pierre , Subra Philippe
Published: August 2017

La tentative française d’instaurer une écotaxe sur le transport routier de marchandises a fait long feu. Décidée dans le prolongement du Grenelle de l’environnement (une vaste consultation sur la politique environnementale organisée par Nicolas Sarkozy en 2007), pour financer les grands projets d’infrastructures, notamment ferroviaires, et favoriser le report du trafic sur des modes durables, cette réforme faisait pourtant consensus au départ, aussi bien parmi les responsables politiques que dans le monde du transport. Elle s’est heurtée à un mouvement d’opposition régional très fort dans l’ouest de la France (les « Bonnets rouges »), mais aussi aux intérêts contradictoires des transporteurs et de leurs clients, à une gestion cacophonique du dossier par la ministre de l’Environnement, Ségolène Royal, et à la prudence du gouvernement Valls, soucieux d’apaisement. Cependant, l’instauration d’écotaxes régionales est évoquée par les présidents de droite de plusieurs régions, comme l’Île-de-France et le Grand Est.
Diffuse Pigmented Villonodular Synovitis as a Rare Cause of Graft Failure Following Anterior Cruciate Ligament Reconstruction
Authors: Rajani Rajiv , Ogden Liliana , Matthews Christopher J. , Gibbs C. Parker
Published: August 2017

This case report describes a 42-year-old woman who was diagnosed with pigmented villonodular synovitis (PVNS) in the knee. The patient had received a bone–patella tendon–bone autograft reconstruction of her anterior cruciate ligament (ACL) 22 years prior to her diagnosis of PVNS. After a traumatic event that tore her ACL graft, she underwent a second surgery to repair the initial reconstruction. However, her pain and joint instability remained unresolved. When radiolucent lesions in her tibia and femur were identified through a radiographic image, the patient was referred to the authors' orthopedic oncology clinic. Additional imaging, including magnetic resonance imaging, revealed PVNS, and she was scheduled for debridement and a complete synovectomy of the knee. After surgery, the patient's pain decreased dramatically. She continues to maintain an active lifestyle despite a relatively minor decrease in range of motion. In this case, PVNS proved to be an unlikely complication after ACL reconstruction. The patient remains at risk for the development of degenerative arthritis. [
Orthopedics.
2018; 41(1):e142–e144.]
Teaching Virtual Experiments: From Course Design to Learning Assessment
Authors: Xiaoming Dong , Zhuo Chen
Published: August 2017

Online learning has advantages over traditional learning due to its flexibility in terms of expanding learning scale and enhanced students’ learning enthusiasm. On the other hand, virtual experiments can reinforce concepts of lecture materials and illustrate applications to complement textbooks. In order to enhance learning efficacy, we proposed a comprehensive method to implement online virtual experiments that incorporates learning assessment andcourse design based on the unique nature of virtual experiment. In additionï¼Œ a controlled experiment was adopted to explore its significance. The results show that it can help students to control the pace, frequency, time of the experiment and to evaluate their learning achievements effectively. That enhances students’ autonomous learning ability greatly.
Design and Development of Distance Laboratory Package for Teaching Basic Electronics via Cloud Computing
Authors: Suwannakhun Sirimonpak , Tanitteerapan Tanes
Published: August 2017

This research presented the design and development of distance laboratory package for teaching undergraduate students basic electronics experimental learning via LabVIEW program. In order to make more understanding by additional practicing in conventional contents rather than studying only theory in classroom. This research is consists of two main parts. The first part is the design and development of the experimental set. The subject contents were analyzed to design the experiment. The competencies and skills in each topic were defined by using objective analysis. The design of experimental procedures and tools for laboratory were implemented by using task analysis. The second part is the design of laboratory sheet. The laboratory sheets were designed on LabVIEW program. The results of study revealed that students who studied with the specified experimental set have more achievement learning with significantly increasing at level 0.05.
IoT Based Agriculture as a Cloud and Big Data Service
Authors: Gill Sukhpal Singh , Chana Inderveer , Buyya Rajkumar
Published: August 2017

Cloud computing has transpired as a new model for managing and delivering applications as services efficiently. Convergence of cloud computing with technologies such as wireless sensor networking, Internet of Things (IoT) and Big Data analytics offers new applications' of cloud services. This paper proposes a cloud-based autonomic information system for delivering Agriculture-as-a-Service (AaaS) through the use of cloud and big data technologies. The proposed system gathers information from various users through preconfigured devices and IoT sensors and processes it in cloud using big data analytics and provides the required information to users automatically. The performance of the proposed system has been evaluated in Cloud environment and experimental results show that the proposed system offers better service and the Quality of Service (QoS) is also better in terms of QoS parameters.
A Methodical Healthcare Model to Eliminate Motion Artifacts from Big EEG Data
Authors: Roy Vandana , Shukla Shailja
Published: August 2017

The Big data as Electroencephalography (EEG) can induce by artifacts during acquisition process which will obstruct the features and quality of interest in the signal. The healthcare diagnostic procedures need strong and viable biomedical signals and elimination of artifacts from EEG is important. In this research paper, an improved ensemble approach is proposed for single channel EEG signal motion artifacts removal. Ensemble Empirical Mode Decomposition and Canonical Correlation Analysis (EEMD-CCA) filter combination are applied to remove artifact effectively and further Stationary Wavelet Transform (SWT) is applied to remove the randomness and unpredictability due to motion artifacts from EEG signals. This new filter combination technique was tested against currently available artifact removal techniques and results indicate that the proposed algorithm is suitable for use as a supplement to algorithms currently in use.
On so-called 'lateral[s]': Some observations from palatography and spectrography
Authors: Traill A.
Published: August 2017

This paper supplements certain well-known articulatory aspects of sigmatisms (lisps) with observations derived from spectrography. The five cases studied show widely differing articulations with a relatively invariant acoustic output. A phonological perspective of the problem is argued to be of relevance to therapy.
Die meting van middeloorfunksie van die normale menslike oor: 'n Timpanometriese ondersoek
Authors: Hay I.S.
Published: August 2017

Nege-en-veertig normaalhorende proefpersone (96 ore) is onderwerp aan 'n timpanometriese ondersoek met 'n Grason-Stadler Otoadmittansmeter. Timpanogramme van konduktansie (G) en susseptansie (B) is gelyktydig geregistreer met meetfrekwensie  220 Hz en daaina met 660 Hz en oorkanaal drukverandering is in 'n positiewe sowel as negatiewe rigting toegepas. Sodoende is vir elke oor 8 timpanogramme verkry waarvan die statiese G- en B-waardes bereken is. Statiese admittansie (Y) en impedansie (Z) is volgens die standaardmetode bereken asook die fasehoek  (0). Die resultate het getoon dat enige van die G- en B-timpanogramme gebruik kan word vir die bepaling van middeloordruk. Die rigting van die drukverandering het verskille by indiwiduele ore opgelewer, maar geen betekenisvolle verskille ten opsigte van die gemiddelde waardes nie. Die vorm van die timpanogramme bewys dat vals positiewe resultate veral by 660 Hz moontlik is aangesien normale ore 'n redelike mate van tipe D-timpanogramme open-baar. Die studie gee aanduidings van die moontlikheid dat timpanometrie o.a. by groot positiewe en negatiewe druk in die oorkanaal, inligting kan verskaf  aangaande middel-oorfunksie.
The performance of stutterers on selected central auditory tests
Authors: Karr Gabrielle M.
Published: August 2017

The possibility of  central auditory involvement in stutterers was investigated. Five confirmed  stutterers and five  nonstutterers between the ages of  20 and 26 years served as subjects. The Phonetically Balanced CID W-22 Auditory Lists presented with ipsilateral and contralateral white noise broad band masking (at signal to noise ratios of  0 dB and -lOdB) and the Staggered Spondaic Word Test were utilized. No significant differences between the groups were revealed, indicating intact functioning  of  both groups on these tests. Possible reasons for  this were postulated. Response trends exhibited by all subjects were discussed.
Aspects of cohesion, tense and pronoun usage in the discourse of the older language-impaired child
Authors: Berger Hilary , Sinoff Aletta
Published: August 2017

Aspects of the discourse of 5 language-impaired children and 5 children with no language impairment, aged approximately 9 years, were compared. A film and a story sequence were utilised to elicit narratives on which, measures of cohesion, tense and pronouns were appraised. Measures of cohesion refer  to the ability to indicate appropriately the relations of meaning with regard to situational context. Measures of tense include aspects of tense range and tense continuity. Measures of  pronouns refer  to the anaphoric use of  pronouns with non-ambiguous referents.  The group of language-impaired children was found  to be significantly poorer on measures of  cohesion and pronominal usage than the normal children, whereas a significant difference between the two groups was not revealed on measures of tense. Possible factors  accounting for  these findings  were discussed and implications for the diagnosis and therapy of the older language-impaired child were considered.
The effects of Mandibular Osteotomy on articulation and resonance
Authors: Geffen Delsa
Published: August 2017

Pre- and post-operative speech samples were studied in nine adult cases who received Mandibular Osteotomy. Lateral cephalograms were taken during sustained production of selected sounds and trained listeners judged recordings. In most cases there was an improvement in the general quality of the speech. Considering that the functional  relationships between the speech organs had altered, it would appear that some form of adaptation by the speaker had in fact taken place.
Aprendizagem e serviço: estudo sobre o nível de satisfação de estudantes do primário
Authors: Folgueiras Bertomeu Pilar , Luna González Esther
Published: August 2017

Aprendizagem e Serviço (APS) é uma metodologia pedagógica que coloca em relação a escola e a comunidade na realização de um projeto em comum. Tomando por base esta metodologia, este artigo apresenta os resultados de um estudo descritivo-compreensivo realizado com 96 estudantes de educação primária, buscando analisar seus níveis de satisfação com relação à participação em projetos de APS.  Mediante a adaptação de um modelo de satisfação, se analisam 4 dimensões chave. A principal técnica de análise da informação é a análise de conteúdo na qual se triangulam técnicas e informantes. A análise realizada demonstra um alto índice de satisfação dos estudantes participantes e estimula a discussão sobre aspectos centrais da metodologia de APS: reflexão, avaliação e participação.
Crenças de autoeficácia docente de pós-graduandos em engenharia: um estudo exploratório
Authors: Matos Mayara da Mota , Iaochite Roberto Tadeu
Published: August 2017

O objetivo deste estudo foi mensurar as crenças de autoeficácia para o ensino de estudantes de pós-graduação das Engenharias, em instituições públicas localizadas no Sul e Sudeste do Brasil, bem como relacionar essas crenças com características pessoais e acadêmicas dos participantes. Especificamente, objetivou identificar quais dessas características poderiam ser associadas às crenças de autoeficácia para o ensino. 340 estudantes de pós-graduação das Engenharias responderam a um questionário sociodemográfico e à escala de autoeficácia do professor. Verificou-se que as crenças de autoeficácia para o ensino foram moderadas-altas, com pontuações mais altas para a dimensão ligada à mobilização dos alunos e mediação do processo de ensino, considerando uma pontuação média de 4.46 em uma escala de 6 pontos. Gênero, experiência de ensino, intenção de se tornar professor e senso de preparação foram as variáveis com forte associação às crenças de autoeficácia para o ensino. Implicações sobre a criação de oportunidades para o ensino durante o curso de pós-graduação foram consideradas.
Invited review: reproductive physiology in commercial and premium pig breeds – history of 30-year-long cooperation
Authors: Rátky József , Egerszegi István , Páble Tamás , Balogh Eszter , Manabe Noboru , Keonouchan Soukanh , Brüssow Klaus-Peter
Published: August 2017

Abstract. Cooperation of the Hungarian Research Institute for Animal Breeding and Nutrition (ATK) with the German Leibniz Institute for Farm Animal Biology (FBN) goes back many decades. In 1988 the two departments of reproductive biology began a joint project concerning on ovulation investigation in Landrace pigs. This joint project laid the foundation for further joint projects and has existed for almost 30 years. Over the years, the main focus has always been on the events of the female reproductive tract in pigs, i.e., follicular growth, ovulation, transport of gametes in the oviduct, fertilization and early embryonic development. Nearly all studies were done under in vivo circumstances and using different clinical and endocrinological methods, enabling us to obtain more profound knowledge of the dynamics of reproductive processes. Even results considered to be basic scientific achievements were available for utilization in the daily practice of porcine reproductive management. Since the end of the 1990s, the common projects have been gradually shifted to the physiology of the Hungarian indigenous pig breed Mangalica. Research partners were convinced that modern utilization of indigenous pig breeds would open new doors for premium pork production. In addition to the Mangalica breed, this principal was broadened to non-European fatty-type native pig breeds as well and resulted in long-term, intercontinental scientific cooperation.
Geomorphic influences on the contribution of vegetation to soil C accumulation and accretion in Spartina alterniflora marshes
Authors: Elsey-Quirk Tracy , Unger Viktoria
Published: August 2017

Abstract. Environmental conditions have a strong influence on rates plant productivity and decomposition. In salt marshes, hydrology and salinity are important regulators of plant and soil processes, which, in turn, can influence the rate at which marsh ecosystems accumulate C and adjust to sea-level rise. For this study, we examined the influence of multivariate environmental conditions on belowground ingrowth (roots + rhizomes), decomposition and biomass in marshes dominated by Spartina alterniflora across two estuaries and a range of geomorphic settings. Secondly, we examined the influence of belowground plant biomass to soil C density, and C (labile and refractory) accumulation and accretion rates. Study locations occupied a full range of tidal elevations from below mean low water to above mean high water. Salinities ranged from 7–40, and soil properties also varied across marshes. While many of the environmental parameters were correlated across marshes, belowground ingrowth of S. alterniflora was negatively influenced by mean low water height, such that root growth increased with more drainage. Belowground decay rate increased with increasing salinity, but ultimately the percent of mass remaining was similar across marshes, averaging 59 ± 1 %. Above- and belowground biomass dynamics were estuary-dependent. In the coastal lagoon estuary, less flooding and a higher sedimentation rate favored above-and belowground biomass, which, in turn, increased soil C accumulation and accretion rates. Biomass dynamics in the coastal plain estuary, for the most part, were unrelated to environmental predictor variables, and had little influence on the accumulation of soil C or accretion rate. These findings indicate that mineral sedimentation is of utmost importance for promoting belowground biomass and soil C accumulation in sediment-limited systems while in minerogenic systems, belowground biomass may not scale with C accumulation and accretion, which may be influenced more by smaller submillimetre-sized C particles.
Hydraulic characterisation of iron oxide-coated sand and gravel based
on nuclear magnetic resonance relaxation modes analyses
Authors: Costabel Stephan , Weidner Christoph , Müller-Petke Mike , Houben Georg
Published: August 2017

Abstract. The capability of nuclear magnetic resonance (NMR) relaxometry to characterise hydraulic properties of iron oxide-coated sand and gravel was evaluated in a laboratory study. Past studies have shown that the presence of paramagnetic iron oxides and large pores as present in coarse sand and gravel disturbs the otherwise linear relationship between relaxation time and pore size. Consequently, the commonly applied empirical approaches fail when deriving hydraulic quantities from NMR parameters. Recent research demonstrates that higher relaxation modes must be taken into account to relate the size of a large pore to its NMR relaxation behaviour in the presence of significant paramagnetic impurities at its pore wall. We performed NMR relaxation experiments with water-saturated natural and reworked sands and gravels, coated with natural and synthetic ferric oxides (goethite, ferrihydrite) and show that the impact of the higher relaxation modes increases significantly with increasing iron content. Since the investigated materials exhibit narrow pore size distributions, and can thus be described by a virtual bundle of capillaries with identical apparent pore radius, recently presented inversion approaches allow for estimating a unique solution yielding the apparent capillary radius from the NMR data. We found the NMR-based apparent radii to correspond well to the effective hydraulic radii estimated from the grain size distributions of the samples for the entire range of observed iron contents. Consequently, they can be used to estimate the hydraulic conductivity using the well-known Kozeny-Carman equation without any calibration that is otherwise necessary when predicting hydraulic conductivities from NMR data. Our future research will focus on the development of relaxation time models that allow for broader pore size distributions. Furthermore, we plan to establish a measurement system based on borehole NMR for localising iron clogging and controlling its remediation in the gravel pack of groundwater wells.
Field-based landslide susceptibility assessment in a data-scarce
environment: the populated areas of the Rwenzori Mountains
Authors: Jacobs Liesbet , Dewitte Olivier , Poesen Jean , Sekajugo John , Nobile Adriano , Rossi Mauro , Thiery Wim , Kervyn Matthieu
Published: August 2017

Abstract. The inhabited zone of the Ugandan Rwenzori Mountains is affected by landslides, frequently causing loss of life, damage to infrastructure and loss of livelihood. This area of ca. 1,230 km2 is characterized by contrasting geomorphologic, climatic and lithological patterns resulting in different landslide types. In this study, we focus on modelling the spatial pattern of landslide susceptibility based on an extensive field inventory constructed for five representative areas within the region (153 km2) and containing over 450 landslides. To achieve a reliable susceptibility assessment, we investigate the effects of (1) using different topographic data sources and spatial resolutions and (2) changing the scale of assessment by comparing local and regional susceptibility models, on the susceptibility model performances using a pixel-based logistic regression approach. Topographic data is extracted from different the digital elevation models (DEMs) based on radar interferometry (SRTM and TanDEM-X) and optical stereo-photogrammetry (ASTER DEM). Susceptibility models using the radar-based DEMs generally outperform the ones using the ASTER DEM. The model spatial resolution is varied between 10, 20, 30 and 90 m. The optimal resolution depends on the location of the investigated area within the region but the lowest model resolution (90 m) rarely yields the best model performances while the highest model resolution (10 m) never results in significant increases in performance compared to the 20 m resolution. Models built for the local case studies generally have similar or better performances than the regional model and better reflect site-specific controlling factors. On the regional level we investigate the effect of distinguishing landslide types between shallow and deep-seated landslides. The separation of landslide types allows to improve model performances for the prediction of deep-seated landslides and to better understand factors influencing the occurrence of shallow landslides such as topographic wetness, tangent curvature and total rainfall depth. Finally, the landslide susceptibility assessment is overlaid with a population density map in order to identify potential landslide risk hotspots, which could direct research and policy action towards reduced landslide risk in this under-researched, landslide-prone region.
A correlation study regarding the AE index and ACE solar wind data for Alfvénic intervals using wavelet decomposition and reconstruction
Authors: Guarnieri Fernando L. , Tsurutani Bruce T. , Vieira Luis E. A. , Hajra Rajkumar , Echer Ezequiel , Mannucci Antony J. , Gonzalez Walter D.
Published: August 2017

Abstract. The purpose of this study is to present a wavelet interactive filtering and reconstruction technique and apply this to the solar wind magnetic field components detected at the L1 Lagrange point ~ 0.01 AU upstream of the Earth. This filtered interplanetary magnetic field (IMF) data is fed into a model to calculate a time series which we call AE*. This model was adjusted assuming that magnetic reconnection associated with southward directed IMF Bz is the main mechanism transferring energy into the magnetosphere. The calculated AE* was compared to the observed AE index using cross correlation analysis. The results show correlations as high as 0.90. Empirical removal of the high-frequency, short-wavelength Alfvénic component in the IMF by wavelet decomposition is shown to dramatically improve the correlation between AE* and the observed AE index. It is envisioned that this AE* can be used as the main input for a model to forecast relativistic electrons in the Earth's outer radiation belts, which are delayed by ~ 1 to 2 days from intense AE events.
Decadal changes of surface elevation over permafrost area estimated using reflected GPS signals
Authors: Liu Lin , Larson Kristine M.
Published: August 2017

Abstract. Conventional benchmark-based surveys and Global Positioning System (GPS) have been used to measure surface elevation changes over permafrost areas, usually once or a few times a year. Here we introduce a new method that uses reflected GPS signals to measure temporal changes of ground surface elevation due to dynamics of the active layer and near-surface permafrost. Applying the GPS interferometric reflectometry technique to the signal-to-noise-ratio data collected by a continuous GPS receiver mounted deep in permafrost in Barrow, Alaska, we can retrieve the vertical distance between the antenna and surface reflector under the antenna. Using this unique kind of observables, we obtain daily changes of surface elevation during July and August from 2004 to 2015. Our results show distinct temporal variations at three timescales: regular thaw settlement within each summer, strong inter-annual variability that is characterized by a sub-decadal subsidence trend followed by a brief uplift trend, and a secular subsidence trend of 0.26 ± 0.02 cm/year during 2004 and 2015. This method provides a new way to fully utilize data from continuous GPS sites in cold regions for studying dynamics of the frozen ground consistently and sustainably over a long time.
Frágeis poderes: governadores e oficiais municipais em Goiás na segunda metade do século XVIII
Authors: Lemes Fernando Lobo , Bonome José Roberto
Published: August 2017

O artigo aponta para a existência de espaços com largas autonomias para a ação dos atores políticos nas redes de poder constituidas em Goiás, durante a segunda metade do século XVIII. O objetivo é propor uma visão da história política colonial que trata o fracionamento das forças políticas como fator determinante para a manutenção do equilíbrio entre os poderes. Através da narrativa de conflitos entre governadores e oficiais municipais, a dinâmica dos poderes na sociedade mineradora de Goiás será recolocada a partir de uma perspectiva mais flexível, considerando a experiência dos atores sobre o terreno colonial, diferente das leituras dualistas produzidas pela historiografia clássica.
OS DESASTRES DA GUERRA: ICONOLOGIA POLÍTICA DO SOFRIMENTO
Authors: Susigan Cristina
Published: August 2017

Mesmo antes do advento da fotografia, artistas registravam os horrores da guerra através de sua arte, como forma de dar a ver a dor dos outros e perpetuar um momento histórico. Francisco de Goya, pintor espanhol, é um exemplo deste registro. Através de pinturas e gravuras que demonstravam de forma crua e forte as crueldades cometidas duranre a invasão francesa em Espanha, descreve a guerra como algo inútil, cruel e sem glória. Antes dele, em 1633, Jacques Callot, já fizera gravuras sobre os horrores da guerra. Mas será com o advento da fotografia, como meio técnico que capta o real de forma tão viva e verdadeira como a própria natureza, que o registro fotográfico se torna uma forma específica de representar a catástrofe. Neste artigo tentaremos relacionar formas de representação através das gravuras de Goya, os primeiros registros fotográficos de Mathew Brady, na guerra de Secessão americana e a iconologia política de Aby Warburg, como registros da memória.Cristina Susigan
A VOZ ENLUTADA: MEMÓRIA E ESQUECIMENTO EM RUI NUNES
Authors: Duarte João Oliveira
Published: August 2017

O tema do luto, ao longo da obra de Rui Nunes, é ao mesmo tempo central e excêntrico. Ele não se encontra no núcleo da obra de Rui Nunes, nos temas do corpo, da morte, da violência da língua e da desfiguração, mas, no entanto, e permanecendo sempre periférico, ele coloca-se numa espécie de linha de fuga lateral que permite encarar de outro ponto de vista os seus temas principais, juntá-los numa outra “constelação”. O tema do luto, no entanto, não encontra uma fácil formulação nos diversos locais onde é convocado. Pretendemos mostrar, desta forma, que ele não pode ser lido nem a partir de uma incorporação ou interiorização nem, igualmente, a partir de uma dialéctica entre memória e esquecimento mas que deve ser lido a partir de uma “imagem da memória” que, não permitindo salvação alguma, lacere a própria memória.
Construção da “Peronização” na Argentina: da Secretaria do Trabalho e Provisão à presidência da República
Authors: Campolina Cristina
Published: August 2017

Nesse artigo trataremos da formação da Secretaria do Trabalho e a afirmação de Perón, o secretário, como o “protetor dos trabalhadores” e subsequente “Peronização” na Argentina. A vitória de Perón junto aos trabalhadores foi um caminho traçado de maneira lenta e metódica segundo um plano estratégico preconcebido. Perón conseguiu implantar uma ordem social diferente da conhecida na Argentina graças à apresentação de um programa de aplicação da justiça social e da busca da cidadania. Os trabalhadores, com demandas há muito frustradas, se harmonizaram com o líder beneficiando-se com as novas leis trabalhistas. A década de 1930, conhecida como a “década infame”, deixou um campo propício para a emergência de um líder. Perón soube usar do contexto histórico para construir sua imagem e tornar-se o salvador da pátria. O 17 de outubro será a prova concreta dessa aliança. Aqui trataremos dessa trajetória.
A fundação de Angra da ilha Terceira. Programas e práticas urbanísticas na construção de um porto atlântico (séc. XVI).
Authors: Leite Antonieta Reis
Published: August 2017

Através da análise histórico-morfológica de Angra (ilha Terceira , arquipélago dos Açores, Portugal),  cidade de fundação quinhentista, este artigo investiga a transposição ao mundo atlântico, em construção no século XVI, de regras de gestão territorial e modelos urbanísticos com origem no processo de composição de Portugal medieval, reformulados nas ilhas atlânticas e depois transpostos ao resto do espaço atlântico português em construção. O artigo relaciona o estudo da  morfologia urbana, sobrepondo à cartografia atual, dados e fontes históricas e investigação recentemente publicada sobre as vilas fundadas no arquipélago.
The Formation of the Guide-interpreter to Work with Deafblind People
Authors: Lupetina Raffaela De Menezes
Published: August 2017

This paper aims to present the main characteristics of the professional who works directly with individuals with acquired deafblindness: the guide-interpreter, in addition, to address the differences between deafblindness and multiple disabilities and explain the characteristics of congenital deafblindness and acquired deafblindness. In this study, a research was conducted with professionals who underwent the guide-interpreter training course in 2016. Fourteen professionals who completed the course participated in the study. In this research, we seek to understand: the profile of individuals who seek and perform the guide-interpreter training course; the main forms of communication used with the deafblinds during the course and whether these newly-trained guide-interpreters have been professionally inserted as a guide-interpreter in the job market. The results contemplate that most of the professionals already work using sign language, but during the training course the form of communication most used with the deafblinds was the extended speech.
Choroidal Neovascularization in Multifocal Choroiditis after Dabrafenib and Trametinib
Authors: Albertini Giorgia C. , Corbelli Eleonora , Battaglia Parodi Maurizio , Bandello Francesco
Published: August 2017

Purpose

To describe a case of bilateral choroidal neovascularization (CNV) in multifocal choroiditis (MFC) associated with dabrafenib and trametinib chemotherapy for metastatic melanoma.

Case

We present a case of a 57-year-old man with MFC who underwent combination therapy with dabrafenib plus trametinib for metastatic melanoma. The patient presented to our ophthalmology department complaining of bilateral vision loss of 2 days’ duration. He underwent multimodal imaging showing a MFC reactivation complicated by bilateral CNV. The patient underwent 3 ranibizumab injections in the right eye and 7 ranibizumab injections in the left eye. Anatomical and functional improvement has been observed.

Conclusions

This report emphasizes the importance of strict ophthalmologic follow-up in patients with metastatic melanoma treated with dabrafenib plus trametinib since rare severe ocular toxicities can occur, especially in patients with a history of uveitis.
3rd Generation Ceramic-On-Ceramic Cementless Total Hip Arthroplasty: A Minimum 10-year follow-up Study
Authors: Lau Yeong J. , Sarmah Shashank , Witt Johan D.
Published: August 2017

Introduction

3rd generation ceramic bearings were introduced in total hip arthroplasty (THA) with the potential to have better mechanical strength and wear properties than their predecessors. At present, there are few studies looking at the long-term results of this latest generation of ceramic bearings. The purpose of our study was to investigate the long-term clinical and radiographic results of 3rd generation ceramic-on-ceramic THA and the incidence of ceramic specific complications such as squeaking and bearing surface fracture.

Methods

The database of the senior author (J.D.W.) was reviewed. A total of 126 hip replacements performed in 108 patients (average age 39.6 years) with an average follow-up of 12.1 years (10-16 years) was identified. Clinical notes and plain radiographs were reviewed. To measure function, patients were contacted and an Oxford Hip Questionnaire was completed. Patients were also directly questioned about the presence of squeaking or any other sounds from the hip. Radiographs were evaluated for signs of wear, osteolysis, loosening and heterotopic ossification. The abduction angle of the acetabular component was measured.

Results

The average Oxford Hip Score was 39.8 out of 48. Survivorship at 10 years was 94.6% (95% CI) with revision for any cause as the endpoint. There was 1 femoral head fracture, no osteolysis, no squeaking and no detectable wear.

Conclusions

The good clinical and radiographic results for this series of patients are similar to other recent long-term studies looking at 3rd generation ceramic-on-ceramic THA. The results compare favourably with other bearing surfaces. The lack of osteolysis associated with this articulation is encouraging and may also make it a good choice for younger patients requiring total hip replacement.
Involvement of poly(ADP-ribose) polymerase-1 in Chinese patients with glioma: a potential target for effective patient care
Authors: Ren Jinhong , Jia Peilan , Feng Hongxia , Li Xiuhua , Zhao Jinghui , Sun Yunxia
Published: August 2017

Objective:

We aimed to evaluate the genetic variation of poly(ADP-ribose) polymerase-1 (PARP-1) in the development of gliomas among Chinese individuals.

Materials and methods:

Patients with a confirmed diagnosis of glioma and healthy individuals with no clinical symptoms of glioma were enrolled at Liaocheng People’s Hospital, China. Genetic polymorphisms were studied in plasma samples by polymerase chain reaction-restriction fragment length polymorphism assay. Cytokine levels were measured routinely in serum samples by sandwich ELISA technique.

Results:

A total of 120 Chinese patients with gliomas and 120 healthy Chinese individuals were included. We found that patients with the GG genotype (odds ratio [OR] 2.53, 95% confidence interval [CI] 1.46-4.38, p<0.001) and carriers of the G allele (OR 11.5, 95% CI 6.31-21.3, p<0.0001) were at high risk of developing glioma. A del/ins polymorphism of the NF-κB1 gene (OR 4.27, 95% CI 2.43-7.50, p<0.001) was also found to be associated with glioma. In addition, significantly increased cytokine levels were observed in patients with glioma (p<0.05).

Conclusions:

Our findings showed that PARP-1 polymorphisms are involved in the development of glioma in Chinese individuals. Also serum cytokine levels can be considered among the potential risk factors for developing glioma.