bluuebunny/crossref_metadata_2025 huggingface dataset:
Improved optical flow velocity analysis in SO2 camera images of volcanic plumes – implications for emission-rate retrievals investigated at Mt Etna, Italy and Guallatiri, Chile
Authors: Gliß Jonas , Stebel Kerstin , Kylling Arve , Sudbø Aasmund
Published: February 2018

Abstract. Accurate gas velocity measurements in emission plumes are highly desirable for various atmospheric remote sensing applications. The imaging technique of UV SO2 cameras is commonly used to monitor SO2 emissions from volcanoes and anthropogenic sources (e.g. power plants, ships). The camera systems capture the emission plumes at high spatial and temporal resolution. This allows the gas velocities in the plume to be retrieved directly from the images. The latter can be measured at a pixel level using optical flow (OF) algorithms. This is particularly advantageous under turbulent plume conditions. However, OF algorithms intrinsically rely on contrast in the images and often fail to detect motion in low-contrast image areas. We present a new method to identify ill-constrained OF motion vectors and replace them using the local average velocity vector. The latter is derived based on histograms of the retrieved OF motion fields. The new method is applied to two example data sets recorded at Mt Etna (Italy) and Guallatiri (Chile). We show that in many cases, the uncorrected OF yields significantly underestimated SO2 emission rates. We further show that our proposed correction can account for this and that it significantly improves the reliability of optical-flow-based gas velocity retrievals. In the case of Mt Etna, the SO2 emissions of the north-eastern crater are investigated. The corrected SO2 emission rates range between 4.8 and 10.7 kg s−1 (average of 7.1  ±  1.3 kg s−1) and are in good agreement with previously reported values. For the Guallatiri data, the emissions of the central crater and a fumarolic field are investigated. The retrieved SO2 emission rates are between 0.5 and 2.9 kg s−1 (average of 1.3  ±  0.5 kg s−1) and provide the first report of SO2 emissions from this remotely located and inaccessible volcano.
Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses
Authors: Guo Yuewei , Zhao Yunge
Published: February 2018

Abstract. Mosses, as major components of later successional biological soil crusts (biocrusts), play many critical roles in arid and semiarid ecosystems. Recently, some species of desiccation-tolerant mosses have been artificially cultured with the aim of accelerating the recovery of biocrusts. Revealing the factors that influence the vegetative propagation of mosses, which is an important reproductive mode of mosses in dry habitats, will benefit the restoration of moss crusts. In this study, three air-dried desiccation-tolerant mosses (Barbula unguiculata, Didymodon vinealis, and Didymodon tectorum) were hermetically sealed and stored at five temperature levels (0, 4, 17, 25, and 30 °C) for 40 days. Then, the vegetative propagation and physiological characteristics of the three mosses were investigated to determine the influence of storage temperature on the vegetative propagation of desiccation-tolerant mosses and the mechanism. The results showed that the vegetative propagation of the three mosses varied with temperature. The most variation in vegetative propagation among storage temperatures was observed in D. tectorum, followed by the variation observed in B. unguiculata. In contrast, no significant difference in propagation among temperatures was found in D. vinealis. The regenerative capacity of the three mosses increased with increasing temperature from 0 to 17 °C, accompanied by a decrease in malondialdehyde (MDA) content, and decreased thereafter. As the temperature increased, the chlorophyll and soluble protein contents increased in B. unguiculata but decreased in D. vinealis and D. tectorum. As to storage, the MDA and soluble sugar contents increased after storage. The MDA content of the three mosses increased at each of the investigated temperatures by more than 50 % from the initial values, and the soluble sugar content became higher than before in the three mosses. The integrity of cells and cell membranes is likely the most important factor influencing the vegetative propagation of desiccation-tolerant mosses. A 40-day storage period caused cell injury. Our results suggest that storage temperature can enhance or suppress such injury and change the regenerative capacity of the three mosses. The data indicate that the suitable storage temperature is 4 °C for B. unguiculata and 17 °C for both D. vinealis and D. tectorum.
Human influences on streamflow drought characteristics in England and Wales
Authors: Tijdeman Erik , Hannaford Jamie , Stahl Kerstin
Published: February 2018

Abstract. Human influences can affect streamflow drought characteristics and
propagation. The question is where, when and why? To answer these questions,
the impact of different human influences on streamflow droughts were assessed
in England and Wales, across a broad range of climate and catchments
conditions. We used a dataset consisting of catchments with near-natural flow
as well as catchments for which different human influences have been
indicated in the metadata (“Factors Affecting Runoff”) of the UK National
River Flow Archive (NRFA). A screening approach was applied on the streamflow
records to identify human-influenced records with drought characteristics
that deviated from those found for catchments with near-natural flow. Three
different deviations were considered, specifically deviations in (1) the
relationship between streamflow drought duration and the base flow index, BFI
(specifically, BFIHOST, the BFI predicted from the hydrological properties of
soils), (2) the correlation between streamflow and precipitation and (3) the
temporal occurrence of streamflow droughts compared to precipitation
droughts, i.e. an increase or decrease in streamflow drought months relative
to precipitation drought months over the period of record. The identified
deviations were then related to the indicated human influences. Results
showed that the majority of catchments for which human influences were
indicated did not show streamflow drought characteristics that deviated from
those expected under near-natural conditions. For the catchments that did
show deviating streamflow drought characteristics, prolonged streamflow
drought durations were found in some of the catchments affected by
groundwater abstractions. Weaker correlations between streamflow and
precipitation were found for some of the catchments with reservoirs, water
transfers or groundwater augmentation schemes. An increase in streamflow
drought occurrence towards the end of their records was found for some of the
catchments affected by groundwater abstractions and a decrease in streamflow
drought occurrence for some of the catchments with either reservoirs or
groundwater abstractions. In conclusion, the proposed screening approaches
were sometimes successful in identifying streamflow records with deviating
drought characteristics that are likely related to different human
influences. However, a quantitative attribution of the impact of human
influences on streamflow drought characteristics requires more detailed
case-by-case information about the type and degree of all different human
influences. Given that, in many countries, such information is often not
readily accessible, the approaches adopted here could provide useful in
targeting future efforts. In England and Wales specifically, the catchments
with deviating streamflow drought characteristics identified in this study
could serve as the starting point of detailed case study research.
On a grain of sand – a microhabitat for the opportunistic agglutinated foraminifera Hemisphaerammina apta n. sp., from the early Eocene Arctic Ocean
Authors: McNeil David H. , Neville Lisa A.
Published: February 2018

Abstract. Hemisphaerammina apta n. sp. is an attached monothalamous agglutinated foraminifera discovered in shelf sediments of the early Eocene Arctic Ocean. It is a simple yet distinctive component of the endemic agglutinated foraminiferal assemblage that colonized the Arctic Ocean after the microfaunal turnover caused by the Paleocene–Eocene Thermal Maximum. Associated foraminifera are characterized by a high percentage of monothalamous species (up to 60 %) and are entirely agglutinated indicating a brackish (mesohaline) early Eocene Arctic Ocean. Hemisphaerammina apta occurs exclusively as individuals attached to fine detrital grains (0.2 to 1.8 mm) of sediment. It is a small species (0.06 to 0.2 mm in diameter), fine-grained, with a low hemispherical profile, no floor across the attachment area, no substantive marginal flange, no internal structures, and no aperture. Lacking an aperture, it apparently propagated and fed through minute (micrometre-sized) interstitial pores in the test wall. Attachment surfaces vary from concave to convex and rough to smooth. Grains for attachment are diverse in shape and type but are predominantly of quartz and chert. The presence of H. apta in the early Eocene was an opportunistic response to an environment with an active hydrological system (storm events). Attachment to grains of sand would provide a more stable base on a sea floor winnowed by storm-generated currents. Active transport is indicated by the relative abundance of reworked foraminifera mixed with in situ species. Contemporaneous reworking and colonization by H. apta is suggested by its attachment to a reworked specimen of Cretaceous foraminifera.
Process-based modelling to evaluate simulated groundwater levels and frequencies in a Chalk catchment in south-western England
Authors: Brenner Simon , Coxon Gemma , Howden Nicholas J. K. , Freer Jim , Hartmann Andreas
Published: February 2018

Abstract. Chalk aquifers are an important source of drinking water in the UK. Due to their properties, they are particularly vulnerable to groundwater-related hazards like floods and droughts. Understanding and predicting groundwater levels is therefore important for effective and safe water management. Chalk is known for its high porosity and, due to its dissolvability, exposed to karstification and strong subsurface heterogeneity. To cope with the karstic heterogeneity and limited data availability, specialised modelling approaches are required that balance model complexity and data availability. In this study, we present a novel approach to evaluate simulated groundwater level frequencies derived from a semi-distributed karst model that represents subsurface heterogeneity by distribution functions. Simulated groundwater storages are transferred into groundwater levels using evidence from different observations wells. Using a percentile approach we can assess the number of days exceeding or falling below selected groundwater level percentiles. Firstly, we evaluate the performance of the model when simulating groundwater level time series using a spilt sample test and parameter identifiability analysis. Secondly, we apply a split sample test to the simulated groundwater level percentiles to explore the performance in predicting groundwater level exceedances. We show that the model provides robust simulations of discharge and groundwater levels at three observation wells at a test site in a chalk-dominated catchment in south-western England. The second split sample test also indicates that the percentile approach is able to reliably predict groundwater level exceedances across all considered timescales up to their 75th percentile. However, when looking at the 90th percentile, it only provides acceptable predictions for long time periods and it fails when the 95th percentile of groundwater exceedance levels is considered. By modifying the historic forcings of our model according to expected future climate changes, we create simple climate scenarios and we show that the projected climate changes may lead to generally lower groundwater levels and a reduction of exceedances of high groundwater level percentiles.
Chaotic dynamics and the role of covariance inflation for reduced rank Kalman filters with model error
Authors: Grudzien Colin , Carrassi Alberto , Bocquet Marc
Published: February 2018

Abstract. The ensemble Kalman filter and its variants have shown to be robust for data assimilation in high dimensional geophysical models, with localization, using ensembles of extremely small size relative to the model dimension. A reduced rank representation of the estimated covariance, however, leaves a large dimensional complementary subspace unfiltered. Utilizing the dynamical properties of the filtration for the backward Lyapunov vectors, this paper explores a previously unexplained mechanism, describing the intrinsic role of covariance inflation in reduced rank, ensemble based Kalman filters. Our derivation of the forecast error evolution describes the dynamic upwelling of the unfiltered error from outside of the span of the anomalies into the filtered subspace. Analytical results for linear systems explicitly describe the mechanism for the upwelling, and the associated recursive Riccati equation for the forecast error, while nonlinear approximations are explored numerically.
Assessment and monitoring of land degradation using geospatial technology in Bathinda district, Punjab, India
Authors: Ahmad Naseer , Pandey Puneeta
Published: February 2018

Abstract. Land degradation leads to alteration of ecological and economic functions due to a decrease in productivity and quality of the land. The aim of the present study was to assess land degradation with the help of geospatial technology – remote sensing (RS) and geographical information system (GIS) – in Bathinda district, Punjab. The severity of land degradation was estimated quantitatively by analyzing the physico-chemical parameters in the laboratory to determine saline or salt-free soils and calcareous or sodic soils and further correlating them with satellite-based studies. The pH varied between 7.37 and 8.59, electrical conductivity (EC) between 1.97 and 8.78 dS m−1 and the methyl orange or total alkalinity between 0.070 and 0.223 (HCO3−) g L−1 as CaCO3. The spatial variability in these soil parameters was depicted through soil maps generated in a GIS environment. The results revealed that the soil in the study area was exposed to salt intrusion, which could be mainly attributed to irrigation practices in the state of Punjab. Most of the soil samples of the study area were slightly or moderately saline with a few salt-free sites. Furthermore, the majority of the soil samples were calcareous and a few samples were alkaline or sodic in nature. A comparative analysis of temporal satellite datasets of Landsat 7 ETM+ and Landsat 8 OLI_TIRS of 2000 and 2014, respectively, revealed that the water body showed a slight decreasing trend from 2.46 km2 in 2000 to 1.87 km2 in 2014, while the human settlements and other built-up areas expanded from 586.25 to 891.09 km2 in a span of 14 years. The results also showed a decrease in area under barren land from 68.9847 km2 in 2000 to 15.26 km2 in 2014. A significant correlation was observed between the digital number (DN) of the near-infrared band and pH and EC. Therefore, it is suggested that the present study can be applied to projects with special relevance to soil scientists, environmental scientists and planning agencies that can use the present study as baseline data to combat land degradation and conserve land resources in an efficient manner.
Analysis of Control-Oriented Wake Modeling Tools Using Lidar Field Results
Authors: Annoni Jennifer , Fleming Paul , Scholbrock Andrew , Roadman Jason , Dana Scott , Adcock Christiane , Porte-Agel Fernando , Raach Steffen , Haizmann Florian , Schlipf David
Published: February 2018

Abstract. Wind turbines in a wind farm operate individually to maximize their own performance regardless of the impact of aerodynamic interactions on neighboring turbines. Wind farm controls can be used to increase power production or reduce overall structural loads by properly coordinating turbines. One wind farm control strategy that is addressed in literature is known as wake steering, wherein upstream turbines operate in yaw misaligned conditions to redirect their wakes away from downstream turbines. The National Renewable Energy Laboratory (NREL) in Golden, CO conducted a demonstration of wake steering on a single utility-scale turbine. In this campaign, the turbine was operated at various yaw misalignment setpoints while a lidar mounted on the nacelle scanned five downstream distances. The lidar measurements were combined with turbine data, as well as measurements of the inflow made by a highly instrumented meteorological mast upstream. The full-scale measurements are used to validate controls-oriented tools, including wind turbine wake models, used for wind farm controls and optimization. This paper presents a quantitative comparison of the lidar data and controls-oriented wake models under different atmospheric conditions and turbine operation. The results show good agreement between the lidar data and the models under these different conditions.
ONTOLOGIA E CONHECIMENTO NOS PRINCÍPIOS DA FILOSOFIA DO FUTURO DE LUDWIG FEUERBACH
Authors: Lima Filho José Edmar
Published: February 2018

Neste artigo pretendo discutir o tema do conhecimento como um problema filosófico no pensamento de Ludwig Feuerbach, tomando por fundamento as formulações desenvolvidas pelo pensador no escrito Princípios da filosofia do futuro (1843). Nele comparece o interesse de Feuerbach por estabelecer a importância de uma filosofia cuja base é a realidade concreta e o reconhecimento da sensibilidade, a que nomeia “nova filosofia”. Por discutir a importância da concretude material para tematização do conhecimento, Feuerbach pressupõe a admissão de certa concepção ontológica, de modo que foi preciso passar por uma breve demarcação da ontologia materialista da qual a nova filosofia parte.
O PROBLEMA DA LEGITIMIDADE DA AUTORIDADE POLÍTICA, OU SOBRE O QUE DIFERENCIA O ESTADO DA MAFIA
Authors: Faggion Andréa Luisa Bucchile
Published: February 2018

O artigo sugere que o Estado se diferencia de uma máfia sofisticada por sua pretensão de possuir autoridade legítima. Procedemos à análise do significado de tal pretensão, o que nos leva ao paradoxo denunciado pelo “anarquismo filosófico”, segundo o qual autoridade nenhuma poderia ser legítima, já que a obediência a qualquer autoridade implicaria, necessariamente, no abandono da racionalidade prática. Então, apresentamos uma teoria formal da razão prática destinada a resolver o paradoxo anarquista. Por fim, analisamos se, concretamente, poderia haver um argumento em prol da legitimidade da autoridade política que preenchesse as condições formais de legitimidade expostas naquela teoria.
Coefficient inequalities for a class of analytic functions associated with the lemniscate of Bernoulli
Authors: Panigrahi Trailokya , Sokól Janusz
Published: February 2018

In this paper, a new subclass of analytic functions ML_{\lambda}^{*}  associated with the right half of the lemniscate of Bernoulli is introduced. The sharp upper bound for the Fekete-Szego functional |a_{3}-\mu a_{2}^{2}|  for both real and complex \mu are considered. Further, the sharp upper bound to the second Hankel determinant |H_{2}(1)| for the function f in the class ML_{\lambda}^{*} using Toeplitz determinant is studied. Relevances of the main results are also briefly indicated.
Arithmetic convergent sequence space defined by modulus function
Authors: Yaying Taja , Hazarika Bipan
Published: February 2018

The aim of this article is to introduce the sequence spaces $AC(f)$ and $AS(f)$ using arithmetic convergence and modulus function, and study algebraic and topological properties of this space, and certain inclusion results.
Some properties of a class of analytic functions
Authors: Xu Neng , Raina R. K.
Published: February 2018

Making use of convolution, we introduce and investigate a certain class of functions which is analytic in the open unit disk. We obtain interesting properties of starlikeness and convexity for this function class. Special cases and some useful consequences of our main results are also mentioned.
Approximation properties of (p;q)-variant of Stancu-Schurer operators
Authors: Wafi Abdul , Rao Nadeem , Deepmala _
Published: February 2018

In this article, we have introduced (p;q)-variant of Stancu-Schurer operators and discussed the rate of convergence for continuous functions. We have also discussed recursive estimates, Korovkin-type theorems and direct approximation results using second order modulus of continuity, Peetre’s K-functional and Lipschitz class.
Not Just Business as Usual in the EU: A Comprehensive Analysis of Immigration and Tax Issues Related to Business Trips in 17 Schengen Countries
Authors: Mazzeschi Marco , Cartwright Jr. Clayton E.
Published: February 2018

This article undertakes a comparative analysis of doing business in the European Union’s Schengen Bloc vis-à-vis working in the Schengen Bloc. Through a critical review of what may constitute business activities vs. work in all 17 Schengen member states, the article establishes how international companies can minimize unintentional exposure to immigration noncompliance as well as possible tax liabilities. As the article observes, there is a general absence of a standard EU legal definition of ‘work’ vs. ‘business activities’ that international companies can apply when sending employees for business purposes to the Schengen Bloc. In the absence of specific criteria, the article outlines what characterizes business activities in 17 Schengen countries and then several international standards, which concerned parties can use a reference point. By examining various sources including EU, OECD and ILO frameworks, the article’s research indicates general terms of reference in distinguishing business activities from work, and how that distinction confers the need for a business visa or a work permit in the European Union’s Schengen Bloc.
Struggle and Survival in Cultural Clash: A Case Study of Pecola in The Bluest Eye
Authors: Yuan Bin
Published: February 2018

Toni Morrison is not only one of the Afro-American writers who focus on the clash between black culture and the white mainstream culture in the United States as well as the marginalized existence of the blacks, but more importantly a unique Afro-American woman writer who goes beyond the simplistic dichotomies of the black male literary tradition and explores the root of the tragedy of the blacks in the mainstream society. Based on textual analysis of her first novel The Bluest Eye and a case study of Pecola, a main character in this novel and actually a victim and scapegoat, this paper, with the painful truth that Pecola’s tragedy results not just from the denial and rejection of the mainstream society, but more significantly, from the blind identification of some blacks in the mainstream culture, and their incompetence to cherish their own culture and identity, aims at exploring hope in the tragic story, and suggesting how blacks can struggle to survive so as to extend their heritage and values.
What Iago Knew
Authors: Gigliucci Roberto
Published: February 2018

This paper defines Iago as a master of time. He knows the future, or, even better put, he is able to foresee it quite brilliantly. Such an ability is typical of a Melancholy character, which, as known, can be a veritable villain. Iago instinctively knows that Desdemona will come to grow weary of the Blackamoor, and he detects her attraction to the young, handsome, and white Cassio. As head and meta-theatrical director, Iago sets out to compress time, and so exert pressure on the other characters. As a result, what would normally take place over a longer stretch of time, becomes quickly contracted in the space of a play. Moreover, considering how the ‘future’ is brought forward, the present appears more ambivalent. From Iago’s point of view, is Desdemona a potential or an inevitable adulteress? To think the worst is, for the villain, to think realistically. Seeing time as following the rules of trivial consistency and verisimilitude (rendering the future predictable), makes it perfectly natural for Iago to consider Desdemona as an unfaithful woman, and Cassio, a coxcomb who plays around with other men’s wives. Furthermore, the Moor is Black, and despite his “fairness”, he will soon become a bad Negro again. Time will prove me right, Iago meditates. Thus, he zips time to triumph further and faster. The last section of the essay is dedicated to the occurrences of the word time in the play, with specific commentaries under the shadow of the secular exegesis, and in line with the critical assumptions made. Finally, in the discussion, the darker side of Iago is also explored, with careful assessment of the extensive bibliography on the subject.
A Comparative Study of Isabel Allende “Ines of My Soul” and Gabriel Garcia Marquez “Love in the Time of Cholera” from the View Point of Features of Magic Realism
Authors: Azizmohammad Fatemeh , Rafati Atieh
Published: February 2018

This tentative study suggests Isabel Allende “Ines of my soul” and Gabriel Garcia Marquez “Love in the Time of Cholera” from magic realism point of view. Magic Realism is a Latin American literary movement which attempts to depict the reality in human’s mind. This literary movement is originated in the Latin American’s fiction in the middle of twentieth century. Isabel Allende, who is famous because in the most of her novels the magic realism is used, depicts the life of Ines Suarez, without whom the settlement of Chile could not be achieved, in the historical novel “Ines of my soul”.The father of magic realist writers, Gabriel Garcia Marquez in “Love in the time of cholera”, depicts the inside and outside worlds of man in this world, with the using of magic realism, he wants to show these opposites clearly.In this study, firstly, a model of analysis will be assumed by the features of magic realism. Next, Allende’s and Marquez’s novels will be read and analyzed within the magic realism pattern, the magic realism’s features will be traced in the novel. Finally, possible implications of both the model and the findings of the research for literary criticism and teaching novels of this kind will be discussed.
Naar een moderner burgerlijk bewijsrecht?
Authors: Wehrmeijer Y.A. , Hoogervorst E.M.
Published: February 2018

Naar een moderner burgerlijk bewijsrecht?

Het in april 2017 verschenen adviesrapport ‘Modernisering burgerlijk bewijsrecht’ geeft aanleiding tot discussie. Kern van het advies is het verleggen van de aandacht van informatiegaring tijdens de procedure naar informatiegaring voorafgaand daaraan. Het rapport besteedt eveneens aandacht aan de exhibitieplicht en diverse bewijsverrichtingen. Na een overzicht van de voorstellen uit het adviesrapport geven de auteurs hun visie op de voorgestelde preprocessuele bewijsgaringsverplichtingen en de daarbij voorgestelde sancties. Het voorstel om de criteria van de exhibitieplicht en de voorlopige bewijsverrichtingen gelijk te trekken kan op hun steun rekenen. Suggesties met betrekking tot bewijsbeslag en (schriftelijk) getuigenbewijs passeren ook de revue.
Perceptual Color Image Smoothing via a New Region-Based PDE Scheme
Authors: Baptiste Magnier , Philippe Montesinos , Daniel Diep
Published: February 2018

In this paper, we present a new color image regularization method using a rotating smoothing filter. This approach combines a method of pixel classification, which roughly  determines if a pixel belongs to a homogenous region or an edge with an anisotropic perceptual edge detector capable of computing two precise diffusion directions. These directions are then used by an anisotropic diffusion scheme. Anisotropic diffusion is accurately controlled near edges and corners, while isotropic diffusion is applied to smooth regions either homogeneous or corrupted by noise. A comparison of our approach with other regularization methods applied on real images demonstrate that our model is able to efficiently restore images and control the diffusion, preserving well edges and corners.
A PSO Application in Skull Prosthesis Modelling by Superellipse
Authors: Rudek Marcelo , Canciglieri Jr Osiris , Greboge Thiago
Published: February 2018

This paper presents a method to create the geometric model of skull defects to be applied in anatomic prosthesis modelling. The approach is to generate an image that represents the missing information in the skull when bone`s defect is non-symmetric. We are proposing the use of superellipse concept to recover the parameters that represents the geometric shape of a skull bone curvature in tomography. If the superellipse is properly adjusted in each computed tomography slice, the arcs that represent the piece of missing bone can be modelled in 3D. The problem is that many similar ellipses can be created, and the best solution must be found. This research applies the Particle Swarm Optimization (PSO) algorithm in order to find the best solution for each tomographic slice. Once the solution found for each slice, the whole 3D missing information can be virtually rebuilt as an adjusted prosthesis model image.
3D Segmentation for Multi-Organs in CT Images
Authors: Bajger Mariusz , Lee Gobert , Caon Martin
Published: February 2018

The study addresses the challenging problem of automatic segmentation of the human anatomy needed for radiation dose calculations.Three-dimensional extensions of two well-known state-of-the art segmentation techniques are proposed and tested for usefulness on a set of clinical CT images.The new techniques are 3D Statistical Region Merging (3D-SRM) and 3D Efficient Graph-based Segmentation (3D-EGS). Segmentations of eight representative tissues (lungs, stomach, liver, heart, kidneys, spleen, bones and the spinal cord)were tested for accuracy using the Dice index, the Hausdorff distance and the $H_t$ index. The 3D-SRM outperformed 3D-EGS producing the average(across the 8 tissues) Dice index, the Hausdorff distance, and the $H_2$ of $0.89$, $12.5$~mm and $0.93$, respectively.
A novel framework for retrieval and interactive visualization of multimodal data
Authors: Kalamaras Ilias , Mademlis Athanasios , Malassiotis Sotiris , Tzovaras Dimitrios
Published: February 2018

With the abundance of multimedia in web databases and the increasing user need for content of many modalities, such as images, sounds, etc., new methods for retrieval and visualization of multimodal media are required. In this paper, novel techniques for retrieval and visualization of multimodal data, i.e. documents consisting of many modalities, are proposed. A novel cross-modal retrieval framework is presented, in which the results of several unimodal retrieval systems are fused into a single multimodal list by the introduction of a cross-modal distance. For the presentation of the retrieved results, a multimodal visualization framework is also proposed, which extends existing unimodal similarity-based visualization methods for multimodal data. The similarity measure between two multimodal objects is defined as the weighted sum of unimodal similarities, with the weights determined via an interactive user feedback scheme. Experimental results show that the cross-modal framework outperforms unimodal and other multimodal approaches while the visualization framework enhances existing visualization methods by efficiently exploiting multimodality and user feedback.
A Colour Iris Recognition System Employing Multiple Classifier Techniques
Authors: Radu Petru
Published: February 2018

The randomness of iris texture has allowed researchers to develop biometric systems with almost flawless accuracies. However, a common drawback of the majority of existing iris recognition systems is the constrained environment in which the user is enroled and recognized. The iris recognition systems typically require a high quality iris image captured under near infrared illumination. A desirable property of an iris recognition system is to be able to operate on colour images, whilst maintaining a high accuracy. In the present work we propose an iris recognition methodology which is designed to cope with noisy colour iris images. There are two main contributions of this paper: first, we adapt standard iris features proposed in literature for near infrared images by applying a feature selection method on features extracted from various colour channels; second, we introduce a Multiple Classifier System architecture to enhance the recognition accuracy of the biometric system. With a feature size of only 360 real valued components, the proposed iris recognition system performs with a high accuracy on UBIRISv1 dataset, in both identification and verfication scenarios.
Detection and Classification of Multiple Objects using an RGB-D Sensor and Linear Spatial Pyramid Matching
Authors: Triantafyllidis Georgios , Dimitriou Michalis , Kounalakis Tsampikos , Vidakis Nikolaos
Published: February 2018

This paper presents a complete system for multiple object detection and classification in a 3D scene using an RGB-D sensor such as the Microsoft Kinect sensor. Successful multiple object detection and classification are crucial features in many 3D computer vision applications. The main goal is making machines see and understand objects like humans do. To this goal, the new RGB-D sensors can be utilized since they provide real-time depth map which can be used along with the RGB images for our tasks. In our system we employ effective depth map processing techniques, along with edge detection, connected components detection and filtering approaches, in order to design a complete image processing algorithm for efficient object detection of multiple individual objects in a single scene, even in complex scenes with many objects. Besides, we apply the Linear Spatial Pyramid Matching (LSPM) [1] method proposed by Jianchao Yang et al for the efficient classification of the detected objects. Experimental results are presented for both detection and classification, showing the efficiency of the proposed design.
Image based Monument Recognition using Graph based Visual Saliency
Authors: Triantafyllidis Georgios , Kalliatakis Gregory
Published: February 2018

This article presents an image-based application aiming at simple image classification of well-known monumentses in the area of Heraklion, Crete, Greece. This classification takes place by utilizing Graph Based Visual Saliency (GBVS) and employing Scale Invariant Feature Transform (SIFT) or Speeded Up Robust Features (SURF). For this purpose, images taken at various places of interest are being compared to an existing database containing images of these places at different angles and zoom. The time required for the matching progress in such application is an important element. To this goal, the images have been previously processed according to the Graph Based Visual Saliency model in order to keep either SIFT or SURF features corresponding to the actual monuments while the background “noise” is minimized. The application is then able to classify these images, helping the user to better understand what he/she sees and in which area he had his/her image taken. Experiments are performed to verify that the proposed approach improves the time needed for the classification without affecting the correctness of the results.
An Automatic Ship Detection Method Based on Local Gray-Level Gathering Characteristics in SAR Imagery
Authors: Wang Xiaolong , Chen Cuixia
Published: February 2018

This paper proposes an automatic ship detection method based on gray-level gathering characteristics of synthetic aperture radar (SAR) imagery. The method does not require any prior knowledge about ships and background observation. It uses a novel local gray-level gathering degree (LGGD) to characterize the spatial intensity distribution of SAR image, and then an adaptive-like LGGD thresholding and filtering scheme to detect ship targets. Experiments on real SAR images with varying sea clutter backgrounds and multiple target situations have been conducted. The performance analysis confirms that the proposed method works well in various circumstances with high detection rate, fast detection speed and perfect shape preservation.
Alzheimer's disease early detection from sparse data using brain importance maps
Authors: Kodewitz Andreas , Lelandais Sylvie , Montagne Christophe , Vigneron Vincent
Published: February 2018

Statistical methods are increasingly used in the analysis of FDG-PET images for the early diagnosis of Alzheimer’s disease. We will demonstrate a method to extract information about the location of metabolic changes induced by Alzheimer’s disease based on a machine learning approach that directly relies features and brain areas to search for regions of interest (ROIs). This approach has the advantage over voxel-wise statistics to consider also the interactions between the features/voxels. We produce “maps” to visualize the most informative regions of the brain and compare the maps created by our approach with voxel-wise statistics. In classification experiments, using the extracted maps, we achieved classification rates of up to 95.5%.
Enhanced Rotational Feature Points Matching using Orientation Correction
Authors: Goh Kam Meng , Abu-Bakar Syed Abd. Rahman , Mokji Musa Mohd. , Sheikh Usman U.
Published: February 2018

Several techniques have been developed for estimating orientation assignment to make feature points invariant to the rotation for the purpose of matching. However, imperfect estimation of the orientation assignment may lead to feature mismatching and low number of correctly matched points.  Besides, several possible candidates with high correlation values for one feature in the reference image may lead to matching confusion. In this paper, we propose a post-processing matching technique to increase the number of correctly matched points and at the same time solve these two issues.  The key idea is to correct the orientation of features based on the relative rotational degree between two images which is estimated based on the orientation difference between major correctly matched points after first round matching. Our analysis of the proposed method shows that the number of correctly matched points can be increased up to 50% of the detected points in the reference image. In addition, some mismatched points due to similar correlation value in first round matching can be corrected. Moreover, the proposed algorithm can be applied to different states-of-the-art orientation assignment techniques.
A Novel Interest-Point-Based Background Subtraction Algorithm
Authors: Dehghani Alireza , Sutherland Alistair
Published: February 2018

Current Back-Ground Subtraction (BGS) algorithms are pixel-based methods. We propose an Interest-Point(IP)-based BGS algorithm applicable in IP-based Computer Vision application. Based on a block-wiseprocessing strategy, the images are divided into blocks of the same size. IPs inside blocks are dealt withtogether as Events. Throughout the frames, the algorithm stores Events of blocks as well as the numbersof their occurrences (Repetition Index (RI)) in a Binary Tree. The RI is used to classify Events into thebackground and foreground. The background Events appear significantly more than a threshold. The otherswith RI value less than the threshold, are classified as the foreground Events. This event classification isused to label IPs of frames into the foreground and background IPs. Experimental results quantitativelyshow that the proposed algorithm delivers a good subtraction rate in comparison with the other BGS ap-proaches. Moreover, it: creates a map of the background usable for further processing; is robust to changesin illumination; and can keep itself updated to changes in the background.
De la estrategia del marketing a la estrategia de comunicación de la agrncia publicitaria
Authors: Quintana Daza Miguel A.
Published: February 2018

Los objetivos de esta ponencia son fundamentalmente dos. En pri­ mer lugar realizar, un recorrido por las diversos planes que la empresa debe diseñar, según mi opinión, si desea que su campaña de publicidad sea eficaz; y en segundo, lograr intentar ver cómo se aplicarían estas ideas a los planes de las agencias de publicidad de servicios plenos.
Imagen diferenciada útil (IDU). Un criterio para orientar y analizar la creatividad en comunicación comercial
Authors: Morillas Rodríguez Rafael
Published: February 2018

La publicidad como fenómeno de comunicación comercial sólo es comprensible en un mercado de alternativas, en el que los compradores potenciales de un producto o servicio poseen similitudes en su capacidad adquisitiva media, necesidades, forma de vida y exposición ante los medios de comunicación.
El Narciso moderno o la reflexión del cuerpo publicitario
Authors: Rey Juan
Published: February 2018

¿Hasta qué punto el cuerpo humano, concretamente el cuerpo mascu­ lino, utilizado en los mensajes publicitarios es un reflexión de la realidad, entendiendo por reflexión  la capacidad de reflejar algo que se encuentra al otro lado del espejo? Esta pregunta conlleva asimismo entender dicho cuerpo como una reflexión en el sentido de reflexionar. No puede olvi­ darse que la utilización de cualquier sistema de comunicación supone al mismo tiempo una reflexión, una manera de pensar o entender lo comu­ nicado, pues «todo contenido de información es, en efecto, contenido de consenso sobre contenidos dominantes» (Cristofaro Longo 1986: 13). Aspecto éste que nos llevará a buscar las razones que han motivado Ja presencia de apolos y adonis en idénticas situaciones y poses allá donde antes sólo aparecían náyades y venus.
La responsabilidad social corporativa, nuevos contenidos para la comunicación empresarial
Authors: Rodríguez Centeno Juan  Carlos
Published: February 2018

La  Responsabilidad   Social  Corporativa   (RSC) ha  irrumpido en  el ámbito empresarial de una forma tan  rápida y extendida que se ha convertido  en el concepto de mayor implantación en la política de empresas e instituciones en los últimos años. En este trabajo describimos y analizamos su origen, la relación repu­ tación-responsabilidad, la puesta en práctica de programas y proyectos de RSC,  y su reflejo y relevancia en la comunicación de las empresas y en las campañas publi­ citarias.
El eboletín universitario
Authors: Boceo  Nieto María Eva
Published: February 2018

Con este artículo se pretende realizar una caracterización del e-boletín universitario, herramienta de comunicación interna-externa,  en función  de los públicos a los cuáles pretende llegar. El mercado de la información universitaria como parte integrante de un mercado más amplio, el mercado de la información, contiene diferentes sistemas de información -Internet, Intranet y Extranet- en los que circulan los productos informativos; en este caso, el e-boletín universitario.
Aproximación tipológica a la música en publicidad
Authors: Fernández Gómez Jorge David
Published: February 2018

Este trabajo  supone una  aproximación a la música publicitaria  desde una doble perspectiva. Por un lado, se estudia la cualidad  que tienen  las melodías para configurarse como elementos corporativos sonoros que complementan la iden­ tidad  visual de la marca. Y por otro, se aborda la posibilidad de que las composi­ ciones que sirven de música a un anuncio puedan  comercializarse independiente­ mente, esto es, convertirse en éxitos fonográficos convencionales. Para llevar a cabo este estudio, partimos  de una  clasificación tipológica musical publicitaria en fun­ ción de la procedencia de la fuente  que a modo de marco teórico se utilizará para desarrollar nuestra propuesta de análisis.
Agencia de publicidad: la reinvención constante
Authors: López Font Lorena
Published: February 2018

El siguiente artículo profundiza,  tras investigar el sector publicitario español y valenciano entre 2002-2005, en la disgregación de la empresa clásica, tópica y hegemónica del sector publicitario,  ''agencia de publicidad';  en diversos tipos de empresa con distintas denominaciones. Defenderemos que la agencia de medios y la consultora de marketing y comunicación son, en este momento y dado el dinamismo de las estrategias planteadas para con sus clientes, los tipos de empre­ sa con mayor potencial de negocio en comunicación corporativa y publicidad. El artículo también  matiza,  cuestiona y plantea dudas futuras frente a esta conclu­ sión, así como problemas generales a resolver por el propio sector publicitario.
El sonido de la velocidad
Authors: Hermida Congosto Alberto
Published: February 2018

PABLO  G. POLITE Y SERGI  SÁN­CHEZ  (COORDINADORES)Barcelona, Ediciones, Alpha Decay, 2005.
La salvación de lo bello
Authors: Caro Castaño Lucía
Published: February 2018

Byung-Chul HanHerder, Barcelona, 2015
El eslogan del año 2000
Authors: Garrido Lora Manuel
Published: February 2018

El eslogan es sin duda el elemento más peculiar de la redacción publi­ citaria. Su brevedad,  su concisión,  su ritmo e incluso su capacidad fasci­ nadora  han llamado  la atención  de lingüistas  e  investigadores, por  un lado,  y de profesionales publicitarios, por otro. El objeto  del  presente artículo es dar a conocer  las principales conclusiones extraídas del estu­ dio de un corpus de 234 eslóganes aparecidos  en revistas y suplementos  dominicales  españoles  durante el primer semestre del año 2000, compa­ rando estos datos con los alcanzados  por otros autores en décadas  pasa­ das y observando cómo evoluciona  el eslogan en la publicidad española.
Retórica de la pintura
Authors: Lasso de la Vega González Camen
Published: February 2018

ALBERTO CARRERE y JOSÉ SABORIT, Madrid, Cátedra, 2000
Así vieron los asistentes las III Jornadas de Publicidad
Authors: González Eva María
Published: February 2018

Un acto cultural, con vocación de permanencia, como nuestras Jornadas de Publicidad, tienen que disponer necesariamente de un instrumento que mida no sólo el agrado/desagrado con el que han sido acogidas sino tam­ bién cuáles son las expectativas de los asistentes, de qué manera se han visto expresadas o frustradas, y sobre todo, cuáles son los temas o conte­ nidos de mayor demanda para un futuro.
Floch, J.M. (1993): Semiótica. márketing y comunicación. Barcelona, Paidós.
Authors: Pérez Gómez María de la Cinta
Published: February 2018

Semiótique, márketing et communication. Sous le signes, les estrategies es el título original de esta obra de Jean Marie Floch, publicada en francés por Presses Universitaires de France. Su primera edición fue en 1991. Su versión española apareció a finales de 1993, bajo el título de Semiótica, márketing y comunicación. Un afortunado lector ofrece desde el prólogo una invitación a la lectura dl libro y un agradecimiento al autor tanto por el tema tratado como por sus valores personales.
Esbozo de una teoría de los géneros redacciones en publicidad
Authors: Rey Juan
Published: February 2018

El tratamiento de la lengua de la publicidad adolece en el caso español de ciertas carencias que repercuten  muy directa y negativamente en la ense­ ñanza de dicha disciplina en las aulas universitarias. Desde 1979, fecha en que -por tomar una referencia- apareciera Lingüística  de la publicidad  de Domingo Cardona y R. Fernández Berasarte, hasta 1991, año de la publica­ ción de Retórica y sintaxis de la publicidad  (Itinerarios de la persuasión), de Luis Sánchez Corral, han pasado más de veinte años y apenas se ha pro­ gresado en el conocimiento del uso específico que la publicidad hace de la lengua. Los dos defectos fundamentales, por llamarlos de alguna manera, proceden  del mundo  laboral  y  de la investigación  universitaria,  únicos ámbitos que se han acercado a la lengua publicitaria.
Zapping y publicidad
Authors: Ullod Ana María
Published: February 2018

La palabra zapping corresponde a un neologismo anglosajón que defi­ ne la práctica de cambiar de canal televisivo a merced del mando a dis­ tancia. En nuestro país este término fue prácticamente desconocido hasta la implantación de la televisión privada. No es que no estuviera presente antes este fenómeno, dado que existía desde hace ya bastante tiempo. Desde el momento en el que hay más de un canal de televisión ya es posi­ ble que se produzca el fenómeno del zapping y a mayor número de cana­ les más posibilidades para hacer zapping.