bluuebunny/crossref_metadata_2025 huggingface dataset:
An approach for detecting changes related to natural disasters using Synthetic Aperture Radar data
Authors: Milisavljevic N. , Closson D. , Holecz F. , Collivignarelli F. , Pasquali P.
Published: April 2015

Abstract. Land-cover changes occur naturally in a progressive and gradual way, but they may happen rapidly and abruptly sometimes. Very high resolution remote sensed data acquired at different time intervals can help in analyzing the rate of changes and the causal factors. In this paper, we present an approach for detecting changes related to disasters such as an earthquake and for mapping of the impact zones. The approach is based on the pieces of information coming from SAR (Synthetic Aperture Radar) and on their combination. The case study is the 22 February 2011 Christchurch earthquake. The identification of damaged or destroyed buildings using SAR data is a challenging task. The approach proposed here consists in finding amplitude changes as well as coherence changes before and after the earthquake and then combining these changes in order to obtain richer and more robust information on the origin of various types of changes possibly induced by an earthquake. This approach does not need any specific knowledge source about the terrain, but if such sources are present, they can be easily integrated in the method as more specific descriptions of the possible classes. A special task in our approach is to develop a scheme that translates the obtained combinations of changes into ground information. Several algorithms are developed and validated using optical remote sensing images of the city two days after the earthquake, as well as our own ground-truth data. The obtained validation results show that the proposed approach is promising.
WCDRR and the CEOS activities on disaters
Authors: Petiteville I. , Ishida C. , Danzeglocke J. , Eddy A. , Gaetani F. , Frye S. , Kuligowski B. , Zoffoli S. , Poland M. , Jones B.
Published: April 2015

Abstract. Agencies from CEOS (Committee on Earth Observation Satellites) have traditionally focused their efforts on the response phase. Rapid urbanization and increased severity of weather events has led to growing economic and human losses from disasters, requiring international organisations to act now in all disaster risk management (DRM) phases, especially through improved disaster risk reduction policies and programmes. As part of this effort, CEOS agencies have initiated a series of actions aimed at fostering the use of Earth observation (EO) data to support disaster risk reduction and at raising the awareness of policy and decision-makers and major stakeholders of the benefits of using satellite EO in all phases of DRM. CEOS is developing a long-term vision for sustainable application of satellite EO to all phases of DRM. CEOS is collaborating with regional representatives of the DRM user community, on a multi-hazard project involving three thematic pilots (floods, seismic hazards and volcanoes) and a Recovery Observatory that supports resilient recovery from one major disaster. These pilot activities are meant as trail blazers that demonstrate the potential offered by satellite EO for comprehensive DRM. In the framework of the 2015 3rd World Conference on Disaster Risk Reduction (WCDRR), the CEOS space agencies intend to partner with major stakeholders, including UN organizations, the Group on Earth Observations (GEO), international relief agencies, leading development banks, and leading regional DRM organisations, to define and implement a 15-year plan of actions (2015- 2030) that responds to high-level Post-2015 Framework for Disaster Risk Reduction priorities. This plan of action will take into account lessons learned from the CEOS pilot activities.
Analysis of landslide hazard area in Ludian earthquake based on Random Forests
Authors: Xie J.-C. , Liu R. , Li H.-W. , Lai Z.-L.
Published: April 2015

Abstract. With the development of machine learning theory, more and more algorithms are evaluated for seismic landslides. After the Ludian earthquake, the research team combine with the special geological structure in Ludian area and the seismic filed exploration results, selecting SLOPE(PODU); River distance(HL); Fault distance(DC); Seismic Intensity(LD) and Digital Elevation Model(DEM), the normalized difference vegetation index(NDVI) which based on remote sensing images as evaluation factors. But the relationships among these factors are fuzzy, there also exists heavy noise and high-dimensional, we introduce the random forest algorithm to tolerate these difficulties and get the evaluation result of Ludian landslide areas, in order to verify the accuracy of the result, using the ROC graphs for the result evaluation standard, AUC covers an area of 0.918, meanwhile, the random forest’s generalization error rate decreases with the increase of the classification tree to the ideal 0.08 by using Out Of Bag(OOB) Estimation. Studying the final landslides inversion results, paper comes to a statistical conclusion that near 80% of the whole landslides and dilapidations are in areas with high susceptibility and moderate susceptibility, showing the forecast results are reasonable and adopted.
Impact of climate and analysis of desertification processes in semi arid land in Algeria: using data of Alsat-1 and Landsat
Authors: Ahmed Z. , Habib M. , Sid Ali H. , Sofiane K.
Published: April 2015

Abstract. The degradation of natural resources in arid and semi-arid areas was highlighted dramatically during this century due to population growth and transformation of land use systems. The Algerian steppe has undergone a regression over the past decade due to drought cycle, the extension of areas cultivated in marginal lands, population growth and overgrazing. These phenomena have led to different degradation processes, such as the destruction of vegetation, soil erosion, and deterioration of the physical environment. In this study, the work is mainly based on the criteria for classification and identification of physical parameters for spatial analysis, and multi-sources factors to determine the vulnerability of steppe formations and their impact on desertification. To do this, we used satellite data Alsat-1 (2009) IRS (2009) and LANDSAT TM (2001). These cross-sectional data with exogenous information could monitor the impact of the semi arid ecological diversity of steppe formations. A hierarchical process including the supervised image classification was used to characterize the main steppe formations. An analysis of the vulnerability of plant was conducted to assign weights and identify areas most susceptible to desertification. Vegetation indices combined with classification are used to characterize the forest and steppe formations to determine changes in land use. The results of this present study provide maps of different components of the steppe, formation that could assist in highlighting the magnitude of the degradation pathways, which affects the steppe environment, allowing an analysis of the process of desertification in the region.
Estimation of grass yield in large region on geographically weighted regression model
Authors: Chengfeng L. , Xiujuan Y. , Caijuan L. , Yingkun D.
Published: April 2015

Abstract. The grass yield embodies its productivity，and also is ground for developing animal husbandry production management. Now the remote sensing technology has been becoming an efficient and feasible mean to estimate the grass yield. In the study, the thought about Geographically Weighted Regression (GWR) was involved in estimating the grass yield. The special characteristics of samples measured on field were considered, and then each sample has a local function covering area around. And the parameters for the function are decided by the weighted function which is associated with the spatial distance between the sample and others around. GWR is a good solution to the model without spatial stationarity, as a consequence a significant model-fitting degree comes out. Based on GWR model an ideal production of grassland can be estimated. In this study, Qinghai province, about 0.72 million square kilometres, was taken as an example. The province is an important one on the Qinghai Tibet Plateau. Here the grassland not only closely relates with the local animal husbandry economy, but also directly affects the regional ecosystem security. Landsat TM data in 2013 and samples on field were used to estimate the production. As input parameters, OSAVI and FVC have high correlation coefficient more than 97% with grass yield. There were 201 samples involved in modelling, and the accuracy is 87.27%, above about 47% than that of multiple linear regression model, a widely used traditional statistic model. Another 220 samples were used to verify the results, and here the accuracy can reach 81.3%. Out results indicated that in 2013 the yield of grass in Qinghai province is 1.018*108 ton. The difference between our data and that from professional sector is less than 10%.
LONG-TERM MARINE TRAFFIC MONITORING FOR ENVIRONMENTAL SAFETY IN THE AEGEAN SEA
Authors: Giannakopoulos T. , Gyftakis S. , Charou E. , Perantonis S. , Nivolianitou Z. , Koromila I. , Makrygiorgos A.
Published: April 2015

Abstract. The Aegean Sea is characterized by an extremely high marine safety risk, mainly due to the significant increase of the traffic of tankers from and to the Black Sea that pass through narrow straits formed by the 1600 Greek islands. Reducing the risk of a ship accident is therefore vital to all socio-economic and environmental sectors. This paper presents an online long-term marine traffic monitoring work-flow that focuses on extracting aggregated vessel risks using spatiotemporal analysis of multilayer information: vessel trajectories, vessel data, meteorological data, bathymetric / hydrographic data as well as information regarding environmentally important areas (e.g. protected high-risk areas, etc.). A web interface that enables user-friendly spatiotemporal queries is implemented at the frontend, while a series of data mining functionalities extracts aggregated statistics regarding: (a) marine risks and accident probabilities for particular areas (b) trajectories clustering information (c) general marine statistics (cargo types, etc.) and (d) correlation between spatial environmental importance and marine traffic risk. Towards this end, a set of data clustering and probabilistic graphical modelling techniques has been adopted.
AUTOMATIC EXTRACTION OF TIDE-COORDINATED SHORELINE USING OPEN SOURCE SOFTWARE AND LANDSAT IMAGERY
Authors: Gonçalves G. , Duro N. , Sousa E. , Figueiredo I.
Published: April 2015

Abstract. Due to both natural and anthropogenic causes, the coastal lines keeps changing dynamically and continuously their shape, position and extend over time. In this paper we propose an approach to derive a tide-coordinate shoreline from two extracted instantaneous shorelines corresponding to a nearly low tide and high tide events. First, all the multispectral images are panshaperned to meet the 15 meters spatial resolution of the panchromatic images. Second, by using the Modification of Normalized Difference Water Index (MNDWI) and the kmeans clustering method we extract the raster shoreline for each image acquisition time. Third, each raster shoreline is smoothed and vectorized using a penalized least square method. Fourth, a 2D constrained Delaunay triangulation is built from the two extracted instantaneous shorelines with their respective heights interpolated from a Tidal gauche station. Finally, the desired tide-coordinate shoreline is interpolated from the previous triangular intertidal surface. The results show that an automatic tide-coordinated extraction method can be efficiently implemented using free available remote sensing imagery data (Landsat 8) and open source software (QGIS and Orfeo toolbox) and python scripting for task automation and software integration.
JOINT OFFSHORE WIND FIELD MONITORING WITH SPACEBORNE SAR AND PLATFORM-BASED DOPPLER LIDAR MEASUREMENTS
Authors: Jacobsen S. , Lehner S. , Hieronimus J. , Schneemann J. , Kühn M.
Published: April 2015

Abstract. The increasing demand for renewable energy resources has promoted the construction of offshore wind farms e.g. in the North Sea. While the wind farm layout consists of an array of large turbines, the interrelation of wind turbine wakes with the remaining array is of substantial interest. The downstream spatial evolution of turbulent wind turbine wakes is very complex and depends on manifold parameters such as wind speed, wind direction and ambient atmospheric stability conditions. To complement and validate existing numerical models, corresponding observations are needed. While in-situ measurements with e.g. anemometers provide a time-series at the given location, the merits of ground-based and space- or airborne remote sensing techniques are indisputable in terms of spatial coverage. Active microwave devices, such as Scatterometer and Synthetic Aperture Radar (SAR), have proven their capabilities of providing sea surface wind measurements and particularly SAR images reveal wind variations at a high spatial resolution while retaining the large coverage area. Platform-based Doppler LiDAR can resolve wind fields with a high spatial coverage and repetition rates of seconds to minutes. In order to study the capabilities of both methods for the investigation of small scale wind field structures, we present a direct comparison of observations obtained by high resolution TerraSAR-X (TS-X) X-band SAR data and platform-based LiDAR devices at the North Sea wind farm alpha ventus. We furthermore compare the results with meteorological data from the COSMO-DE model run by the German Weather Service DWD. Our study indicates that the overall agreement between SAR and LiDAR wind fields is good and that under appropriate conditions small scale wind field variations compare significantly well.
Near Real Time Applications for Maritime Situational Awareness
Authors: Schwarz E. , Krause D. , Berg M. , Daedelow H. , Maass H.
Published: April 2015

Abstract. Applications to derive maritime value added products like oil spill and ship detection based on remote sensing SAR image data are being developed and integrated at the Ground Station Neustrelitz, part of the German Remote Sensing Data Center. Products of meteo-marine parameters like wind and wave will complement the product portfolio. Research and development aim at the implementation of highly automated services for operational use. SAR images are being used because of the possibility to provide maritime products with high spatial resolution over wide swaths and under all weather conditions. In combination with other information like Automatic Identification System (AIS) data fusion products are available to support the Maritime Situational Awareness.
Appraising the Early-est earthquake monitoring system for tsunami alerting at the Italian candidate Tsunami Service Provider
Authors: Bernardi F. , Lomax A. , Michelini A. , Lauciani V. , Piatanesi A. , Lorito S.
Published: April 2015

Abstract. In this paper we present the procedure for earthquake location and characterization implemented in the Italian candidate Tsunami Service Provider at INGV in Roma. Following the ICG/NEAMTWS guidelines, the first tsunami warning messages are based only on seismic information, i.e. epicenter location, hypocenter depth and magnitude, which are automatically computed by the software Early-est. Early-est is a package for rapid location and seismic/tsunamigenic characterization of earthquakes. The Early-est software package operates on offline-event or continuous-realtime seismic waveform data to perform trace processing and picking, and, at a regular report interval, phase association, event detection, hypocenter location, and event characterization. In this paper we present the earthquake parameters computed by Early-est from the beginning of 2012 till the end of December 2014 at global scale for events with magnitude M ≥ 5.5, and the detection timeline. The earthquake parameters computed automatically by Early-est are compared with reference manually revised/verified catalogs. From our analysis the epicenter location and hypocenter depth parameters do not differ significantly from the values in the reference catalogs. The epicenter coordinates generally differ less than 20 ∓ 20 km from the reference epicenter coordinates; focal depths are less well constrained and differ generally less than 0 ∓ 30 km. Early-est also provides mb, Mwp and Mwpd magnitude estimations. mb magnitudes are preferred for events with Mwp ≲ 5.8, while Mwpd are valid for events with Mwp ≳ 7.2. The magnitude mb show wide differences with respect to the reference catalogs, we thus apply a linear correction mbcorr = mb · 0.52 + 2.46, such correction results into δmb ≈ 0.0 ∓ 0.2 uncertainty with respect the reference catalogs. As expected the Mwp show distance dependency. Mwp values at stations with epicentral distance Δ ≲ 30° are significantly overestimated with respect the CMT-global solutions, whereas Mwp values at stations with epicentral distance Δ ≳ 90° are slightly underestimated. We thus apply a 3rd degree polynomial distance correction. After applying the distance correction, the Mwp provided by Early-est differs from CMT-global catalog values of about δ Mwp ≈ 0.0 ∓ 0.2. Early-est continuously acquires time series data and updates the earthquake source parameters. Our analysis shows that the epicenter coordinates and the magnitude values converge rather quickly toward the final values. Generally we can provide robust and reliable earthquake source parameters to compile tsunami warning message within less than about 15 min after event origin time.
There Is Always Room for Improvement: PaLRaP's Ongoing Evolution
Authors: Barnett John , Behler Anne , Reinsfelder Tom
Published: April 2015

None
Noteworthy: News Briefs from PA Libraries
Authors: Barnett John , Neyer Linda
Published: April 2015

None
New taxa of Ambomucor (Mucorales, Mucoromycotina) from China
Authors: Liu Xiao-Yong , Zheng Ru-Yong
Published: April 2015

A new species and a new variety, A. ovalisporus and A. seriatoinflatus var. longior, are described from soils in northwest China. A key to all known taxa of Ambomucor accompanies descriptions and line drawings of the two new taxa. The maximum growth temperature
used as an auxiliary criterion in classification of Mucorales is also discussed.
Geographic distribution of Sarcoporia polyspora and S. longitubulata sp. nov.
Authors: Vlasák Josef , Vlasák Jr. Josef , Kinnunen Juha , Spirin Viacheslav
Published: April 2015

DNA study of Sarcoporia polyspora (= Parmastomyces transmutans) revealed only negligible sequence differences between conifer-dwelling specimens with cartilaginous layer in the context from USA, Brazil, Europe, and Far East Asia, but a very different sequence from three
resupinate and hardwood-bound collections without such a layer and with slightly narrower and pale brown spores from USA and Madeira Islands. This fungus, found also among historical USA collections of S. polyspora in the BPI herbarium, is described here as Sarcoporia longitubulata.
The phylogenetic position of Sarcoporia is discussed.
Type studies on Amauroderma species described by J.D. Zhao et al. and the phylogeny of species in China
Authors: Li Meng-Jie , Yuan Hai-Sheng
Published: April 2015

Holotypes of eight Amauroderma species described by Ji-Ding Zhao and co-workers, together with 93 additional specimens collected from China, were examined. Four names are demoted to synonymy (A. amoiense and A. wuzhishanense = A. rugosum;
A. dayaoshanense = Pyrrhoderma sendaiense; A. fujianense = Ganoderma fornicatum), two represent accepted species (A. austrosinense, A. yunnanense), and two are of uncertain application (A. longgangense, A. jiangxiense)
because of the poor or sterile condition of the holotype material. Illustrated descriptions of A. austrosinense and A. yunnanense are given based on the holotypes. Four other species reported from China (A. perplexum, A. rugosum, A. subresinosum, A. yunnanense)
were sequenced for molecular analysis, and a phylogenetic tree was constructed by maximum parsimony and Bayesian analyses of the nuclear internal transcribed spacer of ribosomal DNA (ITS rDNA) sequences. A key to accepted Amauroderma species in China is provided.
A study of Emirati undergraduates students' perceptions of cooperative learning
Authors: Alrasbi Sumayya
Published: April 2015

The purpose of this study is to investigate the Emirati students’ perception of using cooperative learning to progress their learning process. The study site is one of the Higher Colleges of Technology campuses in the United Arab Emirates. The sample size is two hundred and twenty four participants that have been selected randomly from different programs. This study combines both the quantitative and qualitative research methods, which include questionnaires and interviews to reach the final research findings and researcher recommendations.

The findings of this research prove the importance of using cooperative learning to improve the students’ learning process. The final overall recommendations indicate the need to increase the usage of cooperative learning techniques to ensure a sustained improvement of students’ learning process
To what extent are SQU first year students willing to adjust to college life?
Authors: Mohammed Albalushi Eman
Published: April 2015

This paper investigates first year students’ willingness to accommodate to college life and its demands. It first reviews the literature on the topic, and shows how factors such as family, peers, self-esteem, extroversion and students counselling centres may influence students’ adjustment process. This paper is based on a study conducted at Sultan Qaboos University (SQU) in Oman. Moreover, the paper analyses data obtained through two different questionnaires distributed among 72 students, and interviews with 8 participants; for example, the Tutorial Centre Coordinator, a teacher of Career Guidance Subject, a parent, and first year students and freshmen students’ class observation. The findings of this study are interesting as they contradict with the literature in some aspects. They show that, in the Omani context, students tend to be self-confident and optimistic; therefore, they could cope easily with college life. The paper concludes that this result could be due to media and globalization as they can get information about college life and get prepared. Indeed, it recommends that more research needs to be done regarding the influence of college teachers and cultural issues like gender on students’ adjustment to college environment.
Implementing technology- enhanced tools to improve EFL learning in Algerian Higher education: the case of EFL students at the english department in Jijel University
Authors: Guemide Boutkhil , Benachaiba Celllali , Bedri Ibtissam
Published: April 2015

Education has been an important instrument for social and economic transformation. Presently, higher education in Algeria is experiencing a major transformation in terms of access and quality. This transition is highly influenced by the swift development in information and communication technologies (ICTs) all over the world.

As Information and Communication Technology (ICT) has become one of the basic building blocks of modern society, its introduction in higher education has profound implications for the whole education process, especially in the issues of access, equity, management, efficiency, pedagogy, and quality. Inventive use of ICT is defined as the use of ICT applications that hold up the learning objectives based on the requirements of the modern information society. Hence, there is a need to bring out the facts on the impact of ICT on educational trainers. At the same time, the optimal utilization of opportunities arising due to diffusion of ICTs in higher education system presents a profound challenge for higher education institutes. The purpose of this paper is to discuss how implementation of ICT in EFL will improve the learning process in higher education in Algeria. It addresses the opportunities that can be gained through the integration of ICTs in various aspects of higher education. The study will be purely quantitative, and one questionnaire is administered for students to be analyzed.
Technological, pedagogical and content knowledge (TPACK): Unpacking the TPACK features
Authors: Samarji Ahmad
Published: April 2015

The Technological, Pedagogical and Content Knowledge (TPACK) model is an emerging one which adds technology as a lens and context to the Pedagogical and Content Knowledge (PCK) model. Technology is no longer an ad hoc visitor, where teachers are at liberty of inviting or excluding. Hence, the TPACK model has emerged in response to the fact that teaching and learning should be viewed, conceptualised, and re-contexualised from a “21st century digital lens”.

This presentation showcases a mathematics education “TPACKed course” which was delivered to education students at Victoria University, Melbourne. The course embedded ICT enriched and carefully planned activities, exemplars, and e-practices. Towards the end of the course, the students were surveyed about their TPACK experiences. The presentation will share the promising and encouraging results associated with students’ attitude towards the implemented TPACK approach. Reported concerns and challenges will also be shared. This presentation will argue that whilst the integration of technology across teaching and learning is essential, technology itself should neither become the focus of education nor a superficial mean to merely promote the “know how” capabilities. Technology should be a strategic and tactical investment into education to actively engage students, promote students’ understanding, connect to students’ experiences, and promote their “know why” conceptual understanding.
How does psychological safety affects employee turnover?
Authors: Staub Selva , Yener Serdar
Published: April 2015

The issue of employee turnover in a school setting can signal the difference between a stable and
effective environment and an unstable, unhealthy learning environment. The challenge of turnover
may prove particularly vexing in private schools as it results in costly efforts to replace qualified
teachers, in addition to the potentially negative impression it creates among tuition-paying
clientele. Educational leaders have attempted to mitigate turnover rates and improve morale by
attempting the implementation of a Distributed Leadership framework in their administration of
the school. However, this may not always prove successful. The research carried out in this study
indicates that an additional layer of complexity should be taken into consideration when analyzing
the school’s organizational culture, that is Psychological Safety. It has been identified as taking on
the role of a mediator variant between Distributed Leadership and Turnover Intention.

The primary aim of this study was to analyze and explain the mediation effect of psychological
safety on the relationship between distributed leadership and turnover intention within seven
private secondary schools in Turkey. The data were collected via survey; respondents consisted of
326 principals, vice-principals, and teachers.

Participants in this session will examine the combined effects of Distributed Leadership and
Psychological Safety relevant to employee turnover in an educational environment. Outcomes of
this session include understanding of mechanisms to assess the perceived level of Psychological
Safety, as well as tools to address sentiments of insufficient Psychological Safety among staff.
Influence of N-hydroxyurea on the growth of seedlings and the process of crown-gall tumour formation on sunflower plants
Authors: Rennert Aldona
Published: April 2015

Hydroxyurea (HU) strongly inhibits formation of tumours induced with Agrobacterium tumefaciens in sunflower stems. This effect may partly be ascribed to the direct action of this substance on the bacterium. The course of the HU activity curve in the transformation process leads, however, to the supposition that it acts mainly on the host cells at the time corresponding to the induction phase. Maximal plant cell susceptibility to HU coincides with the wave of DNA synthesis induced by injury to the plant. Under the experimental conditions the time of HU activity in the tissues of the control test plant was limited, and the effects receded during its growth and development.
Hormonal balance in apical meristems of Scots pine shoots as a very early symptom of flower sex differentiation
Authors: Kopcewicz J. , Zatorska Z. , Kulikowska H. , Szcześniak T.
Published: April 2015

The investigations were conducted on the embryonic shoots which were taken at the stage just before the start of the elongation of the last year formed embryonic shoot; it means long time before male and female cone primordia initiation. The results point out to the existence of distinctive balance of auxins to gibberellins in apical meristems oi potentially female and male shoots for about a month before the initiation of new embryonic shoots. These results confirm our previous suggestions that femaleness and maleness in Scots pine is correlated with a high amount of auxins and gibberellins, respectively.
Seasonal variation of auxin in stem cambial region of Pinus sihestris L.
Authors: Wodzicki Tomasz J.
Published: April 2015

Investigation of auxin from the stem cambial region of adult Pinus silvestris trees by diffusion to agar, and by extraction revealed both seasonal variation and gradients along the stem. Variation in dynamics of auxin efflux and the effect of the size of tissue blocks are used as arguments in the critical discussion of the concept of auxin regulation of cambial activity by way of simple seasonal concentration changes.
Determination of proteolytic activity in cereals
Authors: Wojciechowska D. , Kączkowski J.
Published: April 2015

Results have been presented indicating that native proteolytic enzymes and bromelain acted variously ion wheat proteins differentiated in quality, they also act nonspecifically ton haemoglobin. It was thought useful to elaborate a new method of proteolytic activity determination based on the application of a standard natural substrate. The latter consists of gluten extract in acetic acid from a definite flour sample. The method of substrate selection and the determination procedure are described and some examples of wheat proteolytic activity determination are given.
Effect of hydroxyurea on mitotic activity 3H-thymidine and 3H-phenylalanine incorporation in the antheridial filament cells of Chara vulgaris
Authors: Bilecka Anastazja
Published: April 2015

Hydroxyurea inhibits mitotic activity in cells of the antheridial filaments of Chara vulgaris by blocking phase S and phase G2. Blocking of cells in phase G2 also occurs in the case of the root meristem cells of Helianthus annuus and Vicia faba var. minor. 3H-thymidine incorporation confirmed autoradiographically the blocking of cells of the antheridial filaments in Chara vulgaris at phase S and slowing down of the rate of DNA replication. Incubation with 3H-phenylalanine demonstrated that hydroxyurea inhibits protein synthesis.
Chromatographic analysis of phenol compounds in six natural populations of Anthyllis vulneraria (L.)
Authors: Kalinowski Andzrej , Bartkowiak Sławomir
Published: April 2015

Thin-layer chromatography was used to study the phenol composition in individual plants from six natural populations of Anthyllis collected from three distinct geographic regions of Poland. The results showed a variability of the phenols in the examined populations. The populations from Wielkopolska region proved to be most variable, showing the greatest number of phenols. The lowest number of the phenols studies was found in the Tatry populations. Each population showed its own particular spectrum of phenolic compounds. It was found that the populations originating from similar habitats showed more common spots than those from different regions. Populations from the Tatra region were found to differ most from the rest.
Villacañas, José Luis, Ramiro de Maeztu y el ideal de la burguesía en España
Authors: García Romero Juana
Published: April 2015

Reseña del libro de José Luis Villacañas que lleva por título: Ramiro de Maeztu y el ideal de la burguesía en España.
El Theophrastus Redivivus y la eternidad del mundo
Authors: Rodríguez Donís Marcelino
Published: April 2015

El anónimo autor del manuscrito latino Theophrastus redivivus, de la segunda mitad del siglo XVII, sostiene la tesis de la eternidad del mundo frente a los partidarios del creacionismo, inspirados en Moisés. Después de señalar las contradicciones internas del Génesis y su contraste con el Eclesiastés, hace un  exhaustivo recorrido histórico sobre las diferentes opiniones de los filósofos grecolatinos acerca de si el mundo ha tenido un origen o no, decantándose a favor de la tesis de la eternidad del mundo, de acuerdo con el aristotelismo renacentista en la vía de  Pomponazzi.
Jean-Luc Nancy, La partición de las artes. Edición de C. Rodríguez Marciel
Authors: Lesmes Daniel
Published: April 2015

Se trata de la reseña del libro de Jean-Luc Nancy editado por Cristina Rodríguez Marciel.
La eternidad del mundo entre Edad Media y Renacimiento, II
Authors: Granada Martínez Miguel A.
Published: April 2015

Segunda parte de este archivo
Ángel Xolocotzi y Ricardo Gibubu, Fenomenología del cuerpo y hermenéutica de la facticidad
Authors: Caneda Lowry Santiago
Published: April 2015

Reseña
El “Derecho constitucional de anticipación” en la pre-transición
Authors: Burguera Ameave Leyre
Published: April 2015

ResumenLa pre-transición democrática (1962-1975) se caracterizó por mostrar un evidente desajuste entre las estructuras políticas del viejo régimen y las nuevas exigencias y necesidades de la sociedad española en transformación. En este contexto que aventuraba cambios, la universidad y sus referentes intelectuales trazaron vías de estudio que servirían de acicate democratizador (Europa, Historia de las Ideas Políticas, desarrollo y modernización política, etc.). Especialmente notables fueron los esfuerzos teóricos por vislumbrar las posibilidades de evolución que ofrecía el ordenamiento jurídico heredado a la muerte de Franco. Desde el reformismo “en la legalidad franquista”, se optó por realizar estudios de lo tangible buscando la optimización de las “potencialidades democráticas” del marco político del régimen. Los textos, como memoria de la regulación de las relaciones de poder preexistentes y su posible desarrollo, cumplieron la importante labor de posibilitar y facilitar una atmósfera de cambio en los años previos a la consecución de la democracia, a partir de entonces solo cabía esperar los resultados.AbstractThe pre-democratic transition (1962-1975) was characterized by show a clear imbalance between the political structures of the old regime and the new requirements and needs of the Spanish society in transformation. In this context that venturing changes, the university and its related intellectuals charted tracks of study that would serve as a democratizing spur (Europe, History of Political Ideas, political modernization and development, etc.). Especially notable were the theoretical efforts by glimpse the possibilities of evolution that offered legal system inherited on the death of Franco. From the reformism "in Franco’s legality", it was decided to carry out studies on the tangible looking for the optimization of the "democratic potential" of the political framework of the regime. The texts, such as memory of the regulation of relations of power and its possible pre-existing development, met the important work of enable and facilitate an atmosphere of change in the previous time to the attainment of democracy, from then it was only to be hoped the results.
Nostalgia and Sentimentality Among Minority Elderly People (Bulgarian Roma People and Hungarians Living in Romania)
Authors: Stoyanova Stanislava , Doseva Natali , Gergov Teodor , Virginás-Tar Emese
Published: April 2015

Nostalgia and sentimentality are very typical for the old age. There are some characteristics that are perceived as typical for the elderly people in the different cultures, such as being dependent, and needing long-term care. There are also some similarities between the population tendencies in Bulgaria and Romania. The simultaneously acceptance in European Union of both countries also suggests the existence of some similar attitudes towards the past among elderly minority people in both countries. The hypothesis of the study was that together with some similarities, the elderly people from both ethnic minorities in the two countries would differ cross-culturally in their sentimentality and nostalgia related to the past. Sentimentality and nostalgia in elderly minority people (26 Roma people in Bulgaria and 21 Hungarians in Romania) were measured by means of a questionnaire created by Gergov & Stoyanova (2013). The results indicated that the Hungarian minority in Romania was more sentimental and nostalgic than the Roma minority in Bulgaria. More thoughts about the past reported the minority young elders than the minority oldest old. The females from the minority groups were more sentimental than the males from the minority groups. Higher sentimentality and nostalgia among elderly Hungarians could be explained by their higher conservatism and more satisfaction with the hystorical past than Roma people. Roma people living in institutions felt a sense of stability in their present and they shared some positive expectations for the future.
Most Important Work Values in Bulgarian University Students
Authors: Bayrakova Svetoslava
Published: April 2015

This article aims to identify the most important work values of university students. For this purpose, data from an empirical study among students (N = 208), from different study programmes, are presented. Results obtained with the Bulgarian version of the questionnaire WIS/SVP (OS Bulgaria, 2007) revealed that in 2013 there were some gender significant differences in the respondents’ values. The students’ important values were Economic Security, Personal Development, Ability Utilization, Achievement and Advancement. The data could be used for vocational guidance.
Freshly Thawed and Continuously Cultured Human Bone Marrow-Derived Mesenchymal Stromal Cells Comparably Ameliorate Allergic Airways Inflammation in Immunocompetent Mice
Authors: Cruz Fernanda F. , Borg Zachary D. , Goodwin Meagan , Sokocevic Dino , Wagner Darcy , McKenna David H. , Rocco Patricia R.M. , Weiss Daniel J.
Published: April 2015

Recent data suggest that freshly thawed previously frozen mesenchymal stromal cells (MSCs) may not have the same effectiveness or breadth of anti-inflammatory activities as do continuously cultured MSCs. This has significant implications for clinical use, in which many infusion schemes use frozen cells thawed at the bedside for administration. The available data, however, predominantly evaluate in vitro MSC properties, and so far there has been limited in vivo analysis. To further assess this issue, we compared freshly thawed (thawed) versus continuously cultured (fresh) human bone marrow-derived MSC (hMSC) administration in a mouse model of mixed Th2/Th17 allergic airway inflammation induced by Aspergillus hyphal extract (AHE) exposures in immunocompetent C57Bl/6 mice. Control cell populations included fresh versus thawed murine bone marrow-derived MSCs (mMSCs) and human lung fibroblasts (HLFs). Systemic administration of both thawed and fresh hMSCs and mMSCs, but not HLFs, at the onset of antigen challenge in previously sensitized mice significantly ameliorated the AHE-provoked increases in airway hyper-reactivity, lung inflammation, and antigen-specific CD4 T-cell Th2 and Th17 phenotype. Notably, there was no difference in effects of fresh versus thawed hMSCs or mMSCs on any outcome measured except for some variability in the effects on the bronchoalveolar lavage fluid composition. These results demonstrated potent xenogeneic effects of human MSCs in an immunocompetent mouse model of allergic airways inflammation and that thawed MSCs are as effective as fresh MSCs. The question of fresh versus thawed MSC effectiveness needs to be investigated carefully and may differ in different in vivo disease-specific models.

Significance

This study addressed whether freshly thawed mesenchymal stromal cells (MSCs) are as effective in in vivo settings as those that have been continuously cultured. It also provided further data demonstrating that xenogeneic use of MSCs in immunocompetent mice is as effective as murine MSCs. This information provides further support and direction for potential clinical use of MSCs in patients with severe asthma.
Continuous Monitoring of Turbidity and Conductivity in Wastewater Networks
Authors: Bersinger Thomas , Le Hécho Isabelle , Bareille Gilles , Pigot Thierry , Lecomte Alexandre
Published: April 2015

Continuous monitoring of the sanitation network of the urban catchment of Pau (southwest France) has been performed since March 2012 using rain gauges, flowmeters, as well as turbidity and conductivity probes. Good correlations were obtained between turbidity, total suspended solids (TSS) and chemical oxygen demand (COD) on the one hand, and conductivity and total nitrogen on the other hand. This allowed an instantaneous and continuous estimation of pollutant concentrations and fluxes since that date. In the present paper we focused on the results of October 2012, which was characterized by alternating periods of dry and rainy events. Turbidity and conductivity raw data show different trends during the study period depending on the parameter and the rain events. A turbidity peak is observed at the beginning of each rain event but its amplitude varies with the intensity of the rain and the length of the preceding dry weather period. Conversely, conductivity decrease during each rain event implying, that rain water acts as a dilution factor. The behaviour of COD and total nitrogen differ markedly due to their partitioning between the dissolved (total nitrogen) and particulate phases (COD). Daily pollutant fluxes allow a global comprehension and monitoring of the sewer system. Important COD fluxes during a rain event preceded by a long dry weather period highlight the importance of erosion of sedimentary deposits in the sewerage network. During these events, important fluxes are discharged into receiving water leading to the question of the impact on aquatic life. Generally, these results highlight the potential of online monitoring to better understand the behaviour of the sewer network on long or short time scales. This could be a useful tool to manage wastewater treatment.
A TECNOLOGIA NO MUNDO CONTEMPORÂNEO: PROMESSAS E DESAFIOS
Authors: Sass Simeão Donizeti
Published: April 2015

O objetivo do estudo é abordar a tecnologia no mundo contemporâneo. Serão discutidos alguns dos principais avanços que as conquistas científicas trouxeram para a humanidade e os riscos que tais inovações representam para a vida em sentido amplo. Será abordada inicialmente a teoria de Jeremy Rifkin sobre as novas matrizes energéticas. A teoria de Martin Rees será apresentada considerando-se os riscos existenciais. O foco central será a reflexão de Andrew Feenberg referente ao modo como a participação social pode auxiliar na democratização das decisões relativas ao design de novas tecnologias.
PRECARIZAÇÃO DO TRABALHO: A FUNCIONALIDADE DA EDUCAÇÃO PROFISSIONAL
Authors: De Oliveira Ramon
Published: April 2015

Considerando o crescente número de políticas públicas de qualificação profissional voltadas para a juventude, apresentam-se os resultados de uma pesquisa cujo objetivo foi analisar a forma de inserção da juventude brasileira no mercado de trabalho. Tendo como movimento metodológico a análise dos programas públicos de qualificação profissional e a análise de dados apresentados pelo Ministério do Trabalho e Emprego e do Departamento Intersindical de Estatística e de Estudos Socioeconômicos (Dieese) e, tendo como aporte teórico a literatura que discute o mercado de trabalho brasileiro e as políticas de juventude, defende-se que as políticas públicas de qualificação profissional, particularmente as voltadas para a juventude, ampliadas no mandato do presidente Lula e continuadas no governo Dilma, ao pautarem-se pelo desenvolvimento de competências laborais, pelo fortalecimento da empregabilidade e pelo objetivo de formar sujeitos empreendedores, reforçam a ideologia da meritocracia, bem como individualizam o enfrentamento ao problema do desemprego, retirando do Estado o compromisso social e político de enfrentamento à lógica desestruturante do capital. Conclui-se que essas políticas articulam-se diretamente à má qualidade da escola pública e convertem-se em instrumentos funcionais ao processo de reprodução do capital e de acirramento dos processos de exploração dos trabalhadores, direcionando-se basicamente à formação de uma mão de obra capaz de adequar-se subjetiva e tecnicamente a postos de trabalho precarizados.
Quelle évaluation pour quelle politique de formation continue en Suisse ?
Authors: Voirol-Rubido Isabel
Published: April 2015

Cet article présente une réflexion sur la politique de formation continue helvétique. Il mobilise une méthodologie de recherche qualitative afin de mettre en évidence des éléments d’interprétation des décisions prises en matière de politique de formation continue ainsi que de la faible ampleur de son évaluation, en particulier à l’heure d’élaborer une toute nouvelle loi fédérale sur la formation continue en Suisse et d’intégrer formellement ce segment au système de formation suisse suite à l’introduction d’un nouvel article sur la formation continue dans la Constitution fédérale. Il ressort de cette recherche que le principe de subsidiarité des pouvoirs publics et la valorisation de la responsabilité individuelle à se former, dont est empreint le contexte suisse, contribuent à tenir à l’écart de la formation continue les pouvoirs publics, ce qui amène à une politique publique en la matière peu intrusive et une évaluation sommaire.
CURRÍCULO E AVALIAÇÃO: DUAS FACES DA MESMA MOEDA NA GARANTIA DO DIREITO À EDUCAÇÃO DE QUALIDADE SOCIAL
Authors: Eyng Ana Maria
Published: April 2015

O direito à educação de qualidade social viabiliza-se a partir do estreito e permanente diálogo entre os pressupostos do currículo pós-crítico e da avaliação emancipatória. Com base nesse pressuposto, consideramos, para análise, a relação entre políticas de currículo e avaliação, considerando a questão: que concepções sobre currículo e avaliação transitam no espaço escolar e que efeitos produzem no jogo de forças que atuam mantendo práticas conservadoras no espaço escolar? A análise se baseia em elementos teórico-metodológicos advindos de pesquisa bibliográfica em diálogo com dados empíricos, cuja coleta foi realizada via aplicação de entrevistas individuais estruturadas com crianças e adolescentes. Na discussão, são contempladas a avaliação emancipatória, inspirada em Saul (1988), e a perspectiva pós-crítica do currículo, referendada em Silva (2009) e Eyng (2010), que se perfilam entre os condicionantes da garantia do direito à educação, conforme Santos (2010), Estevão (2013), como parâmetro à qualidade social, segundo análise de Silva (2009). Os requisitos da educação de qualidade social incluem currículos interculturais avaliados de forma emancipatória. A garantia do direito à educação, como possibilidade emancipatória, requer uma política contra-hegemônica, considerando a efetivação da qualidade social para todos e todas.