bluuebunny/crossref_metadata_2025 huggingface dataset:
Estrategias de afrontamiento en el perfil descriptivo del estrés académico de los estudiantes universitarios
Authors: González Castillo Humberto
Published: January 2020

El objetivo principal de este artí­culo es determinar el nivel de frecuencia con que se presenta el componente ”Estrategias de Afrontamiento” en el perfil descriptivo del estrés académico, de alumnos de último año de carreras plan fin de semana CUNORI-USAC. Comparando los resultados, conforme al uso e impacto de este componente, entre las diferentes carreras investigadas. Por la táctica teórico-metodológica utilizada en el estudio, se le consideró de tipo cuantitativo-cualitativo, con un alcance descriptivo; en el cual se tomó la población total de estudiantes, 150 participantes respectivamente, que cumplieron con los criterios de selección. El estudio se cimentó en la propuesta teórica del enfoque Sistémico-Cognoscitivista de Arturo Barraza (2006); y la recolección de datos mediante su Inventario SISCO, en el cual se identifican tres componentes del estrés académico: estresores, sí­ntomas y estrategias de afrontamiento, estas últimas son las que se toman para direccionar este artí­culo. Los resultados indican que el 47.3% de estudiantes, conforme análisis de frecuencias y porcentajes, utilizan eventualmente estrategias de afrontamiento. En contraparte la población a estudio presentó un nivel de estrés académico que al centrarse en la relación entre los í­tems y el puntaje global del inventario, permiten afirmar que el estrés académico, presente en los sujetos de investigación, se encuentra en un nivel ”severo”, con un 82.7% según rangos y criterios establecidos, con una intensidad mediamente alta. Por lo que se considera que el plan de estudios, de carreras fin de semana aporta elevados niveles de estrés académico a los estudiantes. Se evidencia que las estrategias de afrontamiento no fueron efectivas, debido a que el empleo de las mismas no redujo el nivel de estrés autopercibido.
Impacto de la Maestrí­a en Educación y Ambientalización Curricular, en las carreras del Centro Universitario de Petén.
Authors: Chán Mas José Marí­a
Published: January 2020

El artí­culo consiste en desarrollar el tema de la importancia de la ambientalización curricular en el Centro Universitario de Petén, haciendo un estudio de caso de la Maestrí­a en Educación y Ambientalización Curricular de la Universidad de San Carlos de Guatemala, este fue el objetivo principal que guió la investigación, en donde se consideraron los estudiantes de la maestrí­a. Los resultados de la investigación evidencian que la ambientalización curricular no ha completado su propósito de ser en el Centro Universitario de Petén, aún hace falta que los proyectos curriculares de las carreras sean actualizados y ambientalizados, que se establezcan equipos multidisciplinarios, equipos de curriculistas o profesionales que diseñen proyectos y propuestas académicas, que planteen lí­neas de investigación concretas. La Maestrí­a en Educación y Ambientalización Curricular es importante para coadyuvar al desarrollo del eje ambiental en todas las carreras de la universidad, y para que éste actué de manera transversal, constituyendo una alternativa que afiance la Educación Ambiental, considerando los enfoques teórico y práctico de ella. En el Centro Universitario de Petén, se ha impartido solo una cohorte de la Maestrí­a en Educación y Ambientalización Curricular, MEAC, en el año 2011 - 2012, Según registro del departamento de postgrado, no se ha desarrollado ninguna otra maestrí­a con orientación ambiental, reportándose hasta la actualidad solamente un graduado de doce (12) participantes en el proceso formativo.
Nährstoffaufnahme der Zuckerrübe. Teil I: Rübe und Blatt
Authors: Bürcky Klaus , Hetterich Thomas , Heyn Johannes , Horn Dietmar , Koch Dierk
Published: January 2020

The yield of sugar beet has increased significantly in the last 20 years, as data on beet yields from Südzucker AG show. This led to the question of how the increased yield influenced the nutrient uptake of root and top. Therefore, beet and top were harvested in field trials set up to optimize the fertilization of sugar beet and, in addition to the yields, the concentrations of macronutrients and micronutrients in root and top were measured. A total of 114 environments were used for these studies and current data for nutrient uptake and nutrient export from sugar beet were determined.

Root yields ranged from 65 to 115tha–1 and the top yields from 13 to 72tha–1. This corresponded to a dry matter yield of 14 to 26tha–1 for roots and to as little as 3.0 to 9.6tha–1 for tops. However, since the nutrient content in the roots was significantly lower than in the tops, less than 50% of the total uptake was found in the roots at harvesting time: N (49%), Mg (44%), K (36 %), Ca (34%), S (32%) and Na (12%). Among the macronutrients, it was only phosphorous which showed with 60% a higher amount of the nutrients in the roots than in the tops (about 40%).

The results provide valuable information for a review and adaptation of current nutrient tables,the nutrient balance and, ultimately, fertilizer assessment.
The right approach how to design the conditioning system of a sugar silo
Authors: Linek Jörg , Rösch Norbert
Published: January 2020

In the light of the constantly growing requirements regarding efficiency, work safety and increasing capacities the design of silos and its conditioning systems demands for customer-specific and experience-based approach.

After production fresh sugar has a residual water content which can lead to agglomerations during storage. This affects the product quality, discharge and transport from the silo and endangers staff who has to remove cakings manually. Therefore it is necessary to prepare and distribute the air constantly at optimal conditions.

Time of conditioning, air quantity and humidity are the parameters to be determined simultaneously based on the type of silo, residual water content of stored sugar, size of sugar crystals, product feed-in rate and environmental conditions [1]. In the design the amount of water to be removed, air distribution in the sugar bed and temperature are considered. Depending on weather conditions the supplied air is mixed with fresh, dried, cooled or heated air to meet the needed conditions and to enable an energy-efficient operation of the plant.
CONVISO® ONE – Ansätze für eine Systemanalyse der Herbizidstrategie
Authors: Hauer-Jákli Melanie , Nause Nelia , Trimpler Kerrin , Stockfisch Nicol , Märländer Bernward
Published: January 2020

Basierend auf der aktuell praxisüblichen Unkrautbekämpfung, zusammengestellt aus Ergebnissen einer langjährigen Betriebsbefragung zur Produktionstechnik im Zuckerrübenanbau, wird abgeleitet, welche Veränderungen der betrieblichen Herbizidstrategien mit dem Einsatz von Conviso One verbunden sein können. Eine chemische Unkrautbekämpfung erfolgt im konventionellen Zuckerrübenanbau auf allen Flächen und wird auf einem Teil der Flächen durch maschinelle mechanische Verfahren und Handarbeit ergänzt. Feldversuche zeigten, dass Conviso One über ein breites Wirkungsspektrum und eine lange Wirkungsdauer verfügt. Die Erwartungen an das System aus Herbizid und toleranter Sorte (Conviso Smart) sind, dass typische Probleme der praxisüblichen Unkrautbekämpfung besser gelöst werden können, wie beispielsweise beim Auftreten von Unkraut- rüben, Raps/Ausfallraps oder verschiedenen Knöterich- oder Hirse-Arten. Dies sind Voraussetzungen, um die Anzahl an Herbizidmaßnahmen zu reduzieren und die Intensität des Herbizideinsatzes insgesamt zu verringern. Wie deutlich diese Reduktion ausfällt ist abhängig davon, wie verbreitet Conviso One angewendet wird und wie umfangreich weitere Herbizide mit Conviso One kombiniert werden. Monetäre Einsparungen für einen Zuckerrüben anbauenden Betrieb resultieren aus der verringerten Anzahl der Überfahrten, veränderten Direktkosten für Herbizide und dem Verzicht auf einen arbeitsintensiven Einsatz von Maschinen- oder Handhacke. Grundsätzlich ist das Risiko für einen verstärkten Selektionsdruck auf Unkräuter, die bereits in Getreidefruchtfolgen auffällig sind, zu berücksichtigen. Über 75% der befragten Betriebe nannten Getreide als Fruchtart sowohl vor wie auch nach Zuckerrüben, was die Notwendigkeit einer Fruchtfolge-übergreifenden Herbizidstrategie unterstreicht.
Diversity, Tourism, and Economic Development: A Global Perspective
Authors: Amin Saqib
Published: January 2020

International tourism enhances understanding and interaction between nations and people, or can generate conflicts due to cultural misunderstandings. In this globalized world, diversity on one side plays a vital and essential role in international tourism and economic development but
on the other side ethnic, cultural, and religious polarization resulting in conflicts, difficulties that may frighten away tourists and lead to vulnerability of the tourism sector in very heterogeneous countries. This study investigates whether existing ethnic and religious diversity affects
the international tourism and economic development. By using the dataset of 187 countries and panel data technique, this study indicates that diversity, either ethnic or religious or both, has a significant negative impact on international tourism and economic development. This study suggests
that ethnic and religious diversity is an inherent part of most societies in a globalized world so in order to minimize its negative consequences there is emergent need to provide equal opportunity to all groups and to encourage cohesive culture. A cohesive and peaceful society can enhance
tourism.
Sense of Community and Trust in the Sharing Economy
Authors: Huurne Maarten Ter , Ronteltap Amber , Buskens Vincent
Published: January 2020

Property sharing is one of the most prominent examples of the rapidly expanding sharing economy. Travelers around the world often opt to stay at a stranger's apartment instead of any other tourism accommodation. Trust is essential in this choice, because staying with, or taking in,
strangers can entail great risks. To create trust between users, sharing platforms often promote a sense of community. However, the relation between sense of community and trust in the sharing economy is still largely unknown. To investigate this relation, both hosts and guests of two sharing
platforms, namely Airbnb and SabbaticalHomes, were surveyed. The findings indicate that sense of community indeed enhances trust between users. Moreover, the evidence suggests that hosts have a stronger sense of community than guests. Also, a significantly higher sense of community was found
on the platform where identification between users is higher. This study shows that affect for the community contributes to the understanding of trust in the sharing economy.
Determinants of Tourism Demand in Indonesia: A Panel Data Analysis
Authors: Muryani  , Permatasari Mia Fauzia , Esquivias Miguel Angel
Published: January 2020

By 2014 Indonesia registered 11.6 million inbound foreign tourists, 135% higher than the year 2000. Since then, government policies to promote tourism flourished. This article investigates the determinants of inbound tourism from the top nine mayor tourist origin countries into Indonesia
covering the period of 2000 to 2014. This research employs a dynamic panel dataset to estimate the impact of per capita real income, relative prices, accommodation capacity, distance, and public infrastructure investment on international tourism demand in Indonesia, capturing demand- and supply-side
effects. The results show that per capita income of tourists, relative price, and available rooms have a positive effect on tourism expenditure in Indonesia, while distance has a negative effect. Dummy variables capture large negative shocks in tourism arising from two terrorist attacks in
2002 and 2005, as well as from the global financial crisis in 2008. Income plays a positive but low impact on tourism demand compared to other nations. The positive effect of prices suggests an advantage of Indonesia in competitive tourism prices. Nevertheless, low prices also denote low value
in tourism services. The substantial impact of accommodation may indicate that significant effects of tourism are allocated in lodging, minimizing the impact on other sectors.
Investigating the Tourism Experience of Thai Cooking Classes: An Application of Larsen's Three-stage Model
Authors: Suntikul Wantanee , Agyeiwaah Elizabeth , Huang Wei-Jue , Pratt Stephen
Published: January 2020

Cooking classes have emerged as popular activities for international tourists seeking to learn and participate in Thai culinary culture. Applying Larsen's psychological three-stage model for understanding the tourism experience, this study identifies motivational and experiential factors
of tourists' participation in cooking classes, and their subsequent behavioral intentions. Drawing on functional motivational theory and Pine and gilmore's experience economy concept, a quantitative instrument is developed to survey 300 tourist participants in cooking classes in Chiang Mai,
Thailand. results suggest that the top-most motivational factor for participation in cooking classes is socioutilitarian needs—a combination of social and utilitarian items, whereas the top-most experiential factor is "Ent-escapist"—a combination of Pine and gilmore's entertainment
and escapist realms. The results indicate that both the motivational and the experiential facets of cooking clases are influenced by a combination of factors. These findings offer implications for the marketing of cooking class products by destination management organizations.
Understanding Renaissance Faire Travel Participation: An Assessment of Leisure Loyalty Frameworks
Authors: Slocum Susan L. , Huang Yung-Kuei , McDowell Jacqueline
Published: January 2020

Renaissance festivals are a growing phenomenon that situates patrons in a fantasy world of rural medieval life. It offers an opportunity to escape modern realities and construct an alternate persona and identity. These activities frequently result in committed behaviors that bring about
extensive travel and offer opportunities to enhance skill development, build lasting friendships, and share a unique world view. Renaissance activities are denoted as forms of leisure loyalty, such as serious leisure, based on qualitative assessments. Using the Sherwood Forest Faire held in
Austin, Texas as a case study, this article attempts to test the applicability of leisure loyalty frameworks, specifically, serious leisure, obsessive/harmonious passion and memorable experiences, for involvement in Faire, explores demographic effects on involvement in Faire, and assesses
the spillover effect of Faire involvement on a selected set of Renaissance-related leisure activities. The results show that a better framework for travel involvement to Faire may fall within the concepts of harmonious/obsessive passion and memorable experience.
Inaugural Events and Beer Tourist Behavior: Capitalizing on the Craft Beer Movement
Authors: Manis K.T. , Chang Hyo Jung (Julie) , Fowler Deborah C. , Blum Shane C.
Published: January 2020

The craft beer movement has resulted in an increased number of beer festivals. Consequentially, many event organizers, groups, and individuals have sought to capitalize on this movement by hosting inaugural beer festivals. This article proposes a multidimensional conceptualization of perceived value specific to beer festivals incorporated into a model for beer tourist behavior by exploring the staging of an inaugural beer festival hosted in a rural community located in Southeastern New Mexico (USA). A mixed-methods approach incorporates depth interviews and questionnaire data. In-depth interviews with 10 attendees provide supplementary information not obtained from the questionnaire. Sixty attendees completed the questionnaire resulting in a 34% response rate. Researchers performed an exploratory factor analysis and regression analyses to test the models. The multidimensional conceptualization of perceived value and the elements comprising servicescape significantly impact satisfaction. Additionally, satisfaction impacts intentions to purchase and to visit. Furthermore, theoretical and practical implications regarding (1) festival organization, (2) marketing to attendees, and (3) marketing to vendors are discussed to benefit both academicians and event organizers, groups, and individuals hosting inaugural events in general and inaugural beer festivals in particular.
Emotional and Cognitive Drivers of Customer Satisfaction in Adventure Travel
Authors: McNeely Linda E. , Burton Jennifer L. , Pennington Julia R.
Published: January 2020

Customer satisfaction has become the critical outcome variable in tourism where traveler experiences become electronic word of mouth (eWOM) for future visitors, yet the drivers of customer satisfaction in adventure travel are not well established in academic literature. This study relies
on both qualitative and quantitative measures to examine visitor perceptions at a wild animal reserve to determine drivers of customer satisfaction in adventure travel. The theoretical framework extends Oliver's expectation disconfirmation theory to this new and growing sector that differs
in that consumers are seeking out unexpected experiences in their travel adventures. This research addresses the role of expectations in a context where customers are seeking the unexpected. This work also incorporates Russell's circumplex theory of affect to illustrate the importance of achieving
a positive, high activation state on the path to customer satisfaction. Findings indicate that perceptions of novelty, value, conservation focus, authentic cultural experience, and freedom of exploration are drivers of customer satisfaction, but perceptions of tranquility and the presence
of animals are not. Results imply that the desire to seek animals or tranquil settings motivate the desire to book an adventure travel experience, but satisfaction with the experience itself will require the delivery of experiences that are undiscovered, unexpected, and go beyond consumers'
preconceived notions. These novel experiences produce the high activation and positive disconfirmation that drive customer satisfaction in this unique travel context.
PSIKOEDUKASI KELOMPOK KADER KESEHATAN JIWA (K3J) DALAM PEMBERDAYAAN PENDERITA SKIZOFRENIA DI MASYARAKAT DI KELURAHAN PEDUNGAN – DENPASAR SELATAN
Authors: Rahayuni I Gusti Ayu Rai
Published: January 2020

The purpose of this pre experimental study is to examine the effect of the mental health volunteer psycho-education program on mental health volunteer caregivers’ attitude to provide rehabilitation for patients with schizophrenia in community. The attitude in this study includes cognitive, affective and behavioral components. The subjects were the mental health volunteer of schizophrenia patients. The samples were a group of 18 participants who receive 5 sessions of the intervention. The activities in the intervention included building of working alliance, introducing about schizophrenia, caring and rehabilitation strategies, coping mechanism and problem solving strategies by methods of sharing experience, discussion and role play. Attitudes towards schizophrenia questionnaire for relatives were used to assess the families’ attitude. Data analyses used was paired t-test. The finding that mental health volunteer caregivers who participated in this program were reported the improvement of their attitude after receiving the intervention (p < .05). The present intervention had a significant influence to increase mental health volunteer caregivers' attitude including affective, cognitive and behavioral to provide rehabilitation for patients with schizophrenia based on religion approach. The practitioners need to continue and extend the program based on the Balinese culture in larger samples and areas by using booklet that was used in this study as a guideline to increase the mental health volunteer’ attitude toward the better prosedure to provide rehabiliation of the schizophrenia patients that can increasing their quality of life in community.
A POLICY FRAMEWORK FOR THE CREATIVE PATTACHITRA ARTISANS AT THE CROSSROAD OF FINANCIAL SCARCITY AND CHANGING TRENDS
Authors: Kanungo Pallavi , Sethi Narayan , Biswal Pritam
Published: January 2020

The present paper introduces the handicraft known as pattachitra art, which personifies Odisha’s culture and spiritual observances.
Pattachitra is a renowned traditional painting of Raghurajpur village in Puri, Odisha (formerly Orissa), Eastern India. The study aims to examine the artisan’s
financial accessibility and the problems of financial scarcity confronted by them and to understand various approaches made by them to sustain their painting
under changing trends. The study is a mixed method approach that includes a personal interview, observations, and rapid rural appraisal. It also includes SWOT
analysis (strengths, weaknesses, opportunities, and threats), and ABC analysis, which helped to prepare a policy framework. Lastly, the paper has documented
pictorial facts to show the innovative approaches adapted for sustaining this traditional art.
AERIAL ART, THE NEW LANDSCAPE OF ROBERT SMITHSON
Authors: Pico Ramón
Published: January 2020

Aircraft were to play a decisive role in the short career of Robert Smithson. In 1969, when he published his article Aerial Art, Walther Prokosch, an architect specializing in aviation, put him in contact with TAMS engineering. This gave rise to his involvement in a land altering operation as vertiginous and brutal as the construction of Dallas Fort-Worth International Airport. At that point Smithson became aware of the human capacity to transform Mother Earth and the importance of contemplation from the air. He incorporated these interests into his artistic creation, thus paving the way for earthwork, crucial to the evolution of Land Art. The study of the documents included among Robert Smithson’s Papers at the Smithsonian Museum of American Art allows us to reconstruct a history that shared interests and concerns with Moholy-Nagy’s New Vision or Le Corbusier’s Loi du Méandre.
CONSTRUCTION OF DISASTER PREVENTION CAPABILITY EVALUATION FRAMEWORK OF URBAN PARK SYSTEM: METHODOLOGY AND ITS APPLICATION IN CHINA
Authors: Fei Wenjun , Wu Jiyang , Shi Ying , Chen Qi
Published: January 2020

The construction of disaster prevention capability evaluation framework is the basic requirement of building a
sustainable and harmonious society under the background of urban public security. This study had constructed a framework for disaster prevention capability assessment of urban park systems applicable to China through rigorous logical
reasoning and careful selection of indicators. The framework contains 4 first-level indicators and 8 second-level indicators
and 21 third-level indicators. Quantitative methods and calculating procedures for each indicator and dynamic weight were
also given in this paper. Finally, in order to prove the practical value of the evaluation system designed in this study, five
cities in China were selected for application. The results showed that the indicator system can not only accurately quantify
the disaster prevention capability of the urban park system, but also discover the shortcomings in the process of urban park
system construction, which has strong theoretical and practical value
DYNAMIC STATE OF ECOSYSTEM CARRYING CAPACITY UNDER ISLAND URBANIZATION: A CASE STUDY OF PINGTAN ISLAND IN THE SOUTHEASTERN COAST OF CHINA
Authors: Gao Sheng , Sun Huihui , Cao Guangxi , Zhao Lin , Wang Runjie , Xu Min
Published: January 2020

The assessment of ecological environment during the large-scale development of islands is a major topic
in the study of current coastal islands. Choosing the appropriate assessment method to evaluate the suitability of carrying capacity
of islands and making relevant suggestions are significant to the sustainable development of islands. Ecological footprint method
is used to analyze the ecological carrying capacity of Pingtan Island (PI) from 2005 to 2016 for promoting the coordinated rational
development and construction and ecological environment of the island. Although PI is in rapid urban development and construction,
the island maintains secure and stable ecological conditions. PI is used as a research case to analyze the sustainable development
of the ecological environment through the carrying capacity of the island ecosystem.
Evaluating Climate Variability of the Canonical Hot-Jupiters HD 189733b and HD 209458b through Multi-epoch Eclipse Observations
Authors: Kilpatrick Brian M. , Kataria Tiffany , Lewis Nikole K. , Zellem Robert T. , Henry Gregory W. , Cowan Nicolas B. , de Wit Julien , Fortney Jonathan J. , Knutson Heather , Seager Sara , Showman Adam P. , Tucker Gregory S.
Published: January 2020

Here we present the analysis of multi-epoch secondary eclipse observations of HD 189733b and HD 209458b as a probe of temporal variability in the planetary climate using both Spitzer channels 1 and 2 (3.6 and 4.5 μm). We expect hot-Jupiter atmospheres to be dynamic environments exhibiting time varying weather. However, it is uncertain to what extent temporal variability will be observable when considering disk integrated observations. We do not detect statistically significant variability and are able to place useful upper limits on the infrared variability amplitudes in these atmospheres. There are very few planets with multi-epoch observations at the required precision to probe variability in dayside emission. The observations considered in this study span several years, providing insight into temporal variability at multiple timescales. In the case of HD 189733b, the best-fit eclipse depths for the channel 2 observations exhibit a scatter of 102 ppm about a median depth of 1827 ppm and in channel 1 exhibit a scatter of 88 ppm about a median depth of 1481 ppm. For HD 209458b, the best-fit eclipse depths for the channel 2 observations exhibit a scatter of 22 ppm about a median depth of 1406 ppm, and in channel 1 exhibit a scatter of 131 ppm about a median depth of 1092 ppm. The precision and scatter in these observations allow us to constrain variability to less than (5.6% and 6.0%) and (12% and 1.6%) for channels (1, 2) of HD 189733b and HD 209458b, respectively.
Observing the Redshifted 21 cm Signal around a Bright QSO at z ∼ 10
Authors: Ma Qing-Bo , Ciardi Benedetta , Kakiichi Koki , Zaroubi Saleem , Zhi Qi-Jun , Busch Philipp
Published: January 2020

We use hydrodynamics and radiative transfer simulations to study the 21 cm signal around a bright QSO at z ∼ 10. Due to its powerful UV and X-ray radiation, the QSO quickly increases the extent of the fully ionized bubble produced by the pre-existing stellar type sources, in addition to partially ionizing and heating the surrounding gas. As expected, a longer QSO lifetime, t
QSO, results in a 21 cm signal in emission located at increasingly larger angular radii, θ, and covering a wider range of θ. Similar features can be obtained with a higher galactic emissivity efficiency, f
UV, such that determining the origin of a large ionized bubble (i.e., QSO versus stars) is not straightforward. Such degeneracy could be reduced by taking advantage of the finite light travel time effect, which is expected to affect an H ii region produced by a QSO differently from one created by stellar type sources. From an observational point of view, we find that the 21 cm signal around a QSO at various t
QSO could be detected by Square Kilometre Array1-low instrument with a high signal-to-noise ratio (S/N). As a reference, for t
QSO = 10 Myr, a S/N ∼ 8 is expected assuming that no pre-heating of the intergalactic medium has taken place due to high-z energetic sources, while it can reach values above 10 in cases of pre-heating. Observations of the 21 cm signal from the environment of a high-z bright QSO could then be used to set constraints on its lifetime, as well as to reduce the degeneracy between f
UV and t
QSO.
Spectral Classification and Ionized Gas Outflows in z ∼ 2 WISE-selected Hot Dust-obscured Galaxies
Authors: Jun Hyunsung D. , Assef Roberto J. , Bauer Franz E. , Blain Andrew , Díaz-Santos Tanio , Eisenhardt Peter R. M. , Stern Daniel , Tsai Chao-Wei , Wright Edward, L. , Wu Jingwen
Published: January 2020

We present Very Large Telescope/XSHOOTER rest-frame UV–optical spectra of 10 hot dust-obscured galaxies (Hot DOGs) at z ∼ 2 to investigate active galactic nucleus (AGN) diagnostics and assess the presence and effect of ionized gas outflows. Most Hot DOGs in this sample are narrow-line-dominated AGNs (type 1.8 or higher) and have higher Balmer decrements than typical type 2 quasars. Almost all (8/9) sources show evidence for ionized gas outflows in the form of broad and blueshifted [O iii] profiles, and some sources have such profiles in Hα (5/7) or [O ii] (3/6). Combined with the literature, these results support additional sources of obscuration beyond the simple torus invoked by AGN unification models. Outflow rates derived from the broad [O iii] line (≳103
M
⊙ yr−1) are greater than the black hole accretion and star formation rates, with feedback efficiencies (∼0.1%–1%) consistent with negative feedback to the host galaxy’s star formation in merger-driven quasar activity scenarios. We find that the broad emission lines in luminous, obscured quasars are often better explained by outflows within the narrow-line region and caution that black hole mass estimates for such sources in the literature may have substantial uncertainty. Regardless, we find lower bounds on the Eddington ratio for Hot DOGs near unity.
Galaxy Cluster Mass Estimates in the Presence of Substructure
Authors: Tucker Evan , Walker Matthew G. , Mateo Mario , Olszewski Edward W. , Geringer-Sameth Alex , Miller Christopher J.
Published: January 2020

We develop and implement a model to analyze the internal kinematics of galaxy clusters that may contain subpopulations of galaxies that do not independently trace the cluster potential. The model allows for substructures within the cluster environment and disentangles cluster members from contaminating foreground and background galaxies. We estimate the cluster velocity dispersion and/or mass while marginalizing over uncertainties in all of the above complexities. Using mock observations from the MultiDark simulation, we compare the true substructures from the simulation with the substructures identified by our model, showing that 50% of the identified substructures have at least 79% of its members are also members of the same true substructure, which is on par with other substructure identification algorithms. Furthermore, we show a ∼35% decrease in scatter in the inferred velocity dispersion versus true cluster mass relationship when comparing a model that allows three substructures to a model that assumes no substructure. In a first application to our published data for A267, we identify up to four distinct galaxy subpopulations. We use these results to explore the sensitivity of inferred cluster properties to the treatment of substructure. Compared to a model that assumes no substructure, our substructure model reduces the dynamical mass of A267 by ∼22% and shifts the cluster mean velocity by ∼100 km s−1, approximately doubling the offset with respect to the velocity of A267's brightest cluster galaxy. Embedding the spherical Jeans equation within this framework, we infer for A267 a halo mass M
200 = (7.0 ± 1.3) × 1014
M
⊙
h
−1 and concentration

, consistent with the mass–concentration relation found in cosmological simulations.
Interspecific cytogenetic relationships in three Acestrohynchus species (Acestrohynchinae, Characiformes) reveal the existence of possible cryptic species
Authors: Campos Alber Sousa , Favarato Ramon Marin , Feldberg Eliana
Published: January 2020

The karyotypes and chromosomal characteristics of threeAcestrorhynchusEigenmann et Kennedy, 1903 species were examined using conventional and molecular protocols. These species had invariably a diploid chromosome number 2n = 50.Acestrorhynchus falcatus(Block, 1794) andAcestrorhynchus falcirostris(Cuvier, 1819) had the karyotype composed of 16 metacentric (m) + 28 submetacentric (sm) + 6 subtelocentric (st) chromosomes whileAcestrorhynchus microlepis(Schomburgk, 1841) had the karyotype composed of 14m+30sm+6st elements. In this species, differences of the conventional and molecular markers between the populations of Catalão Lake (AM) and of Apeu Stream (PA) were found. Thus the individuals of Pará (Apeu) were named Acestrorhynchus prope microlepis. The distribution of the constitutive heterochromatin blocks was species-specific, with C-positive bands in the centromeric and telomeric regions of a number of different chromosomes, as well as in interstitial sites and completely heterochromatic arms. The phenotypes of nucleolus organizer region (NOR) were simple, i. e. in a terminal position on theparm of pair No. 23 except inA. microlepis, in which it was located on theqarm. Fluorescencein situhybridization (FISH) revealed 18S rDNA sites on one chromosome pair in karyotype ofA. falcirostrisand A. prope microlepis (pair No. 23) and three pairs (Nos. 12, 23, 24) inA. falcatusand (Nos. 8, 23, 24) inA. microlepis; 5S rDNA sites were detected in one chromosome pair in all three species. The mapping of the telomeric sequences revealed terminal sequences in all the chromosomes, as well as the presence of interstitial telomeric sequences (ITSs) in a number of chromosome pairs. The cytogenetic data recorded in the present study indicate that A. prope microlepis may be an unnamed species.
Contribution to the bryological knowledge of the Tuscan-Emilian Apennines (Northern Italy)
Authors: Aleffi Michele , Bonini Ilaria , Cogoni Annalena , Perego Sandro , Petraglia Alessandro , Poponnessi Silvia , Sguazzin Francesco , Puglisi Marta
Published: January 2020

The inventory of the bryophytes collected during the annual excursion of the Working Group for Bryology of the Italian Botanical Society is reported. This excursion was held in 2018 on the northern slope of the Tuscan-Emilian Apennines National Park, in the Administrative Region of Emilia-Romagna. The field work led to the finding of 113 taxa (24 liverworts and 89 mosses), including eight new records and seven confirmations for this Region. The occurrence of rare taxa for Italy (Scapania uliginosa, Rhizomnium pseudopunctatum, Racomitrium fasciculare, Scorpidium cossonii, Grimmia lisae, Orthotrichum pulchellum) is highlighted.
The functional composition of the neophytic flora changes in response to environmental conditions along a rural-urban gradient
Authors: Wolf Janis , Haase Dagmar , Kühn Ingolf
Published: January 2020

Compared to rural environments, cities are known to be extraordinarily rich in plant species. In particular, the proportion of alien plant species is higher in urban areas. This is attributed to specific urban conditions, which provide a large variety of habitats due to high geological heterogeneity. It can also be attributed to the role of cities as centres for plant introductions and the consequential increased propagule pressure. Neophytes, alien plant species introduced after the discovery of the Americas, appear to contribute especially strongly to the increased proportion of alien plants in cities. To investigate whether the plant traits of neophytes can be explained by environmental variables, we modelled the composition of their pollination types and growth forms as well as their diaspore weight and the onset of flowering in response to a selection of climatic, geological, land cover and traffic network variables with data from Germany. To test for a specific urban effect, we included their interactions with the area of urban land use.

In general, we found that climatic variables were the most important predictors for all traits. However, when considering interactions with urbanisation, non-climatic variables, which often were not significant as the main effect, remained in the final models. This points to an existing ‘urban effect’. However, it is much smaller compared to the purely climatic effects. We conclude that interferences and alterations mainly related to urbanisation and human activity in general are responsible for the different ecological processes found in cities compared to rural areas. In addition, we argue that considering functional traits is an appropriate way to identify the ecological mechanisms related to urbanisation.
Interleukin 17A and IL-17F Expression and Functional Responses in Rheumatoid Arthritis and Peripheral Spondyloarthritis
Authors: Chen Sijia , Blijdorp Iris C. , van Mens Leonieke J.J. , Bowcutt Rowann , Latuhihin Talia E. , van de Sande Marleen G.H. , Shaw Stevan , Yeremenko Nataliya G. , Baeten Dominique L.P.
Published: January 2020

Objective.

Targeting the interleukin 17 (IL-17) axis is efficacious in psoriasis and spondyloarthritis (SpA), but not in rheumatoid arthritis (RA). We investigated potential differences in tissue expression and function of IL-17A and IL-17F in these conditions.

Methods.

mRNA expression of cytokines and their receptors was assessed by quantitative PCR in psoriasis skin samples, in SpA and RA synovial tissue (ST) samples and in fibroblast-like synoviocytes (FLS). Cytokines were measured in synovial fluid (SF) and FLS supernatants by ELISA. FLS were stimulated with IL-17A or IL-17F cytokines supplemented with tumor necrosis factor (TNF), or with pooled SF from patients with SpA or RA.

Results.

Levels of IL-17A (P = 0.031) and IL-17F (P = 0.017) mRNA were lower in psoriatic arthritis ST compared to paired psoriasis skin samples. The level of IL-17A mRNA was 2.7-fold lower than that of IL-17F in skin (P = 0.0078), but 17.3-fold higher in ST (P < 0.0001). In SF, the level of IL-17A protein was 37.4-fold higher than that of IL-17F [median 292.4 (IQR 81.4–464.2) vs median 7.8 (IQR 7.7–8.7) pg/mL; P < 0.0001]. IL-17A and IL-17F mRNA and protein levels did not differ in SpA compared to RA synovitis samples, and neither were the IL-17 receptors IL-17RA and IL-17RC, or the TNF receptors TNFR1 and TNR2, differentially expressed between SpA and RA ST, nor between SpA and RA FLS. SpA and RA FLS produced similar amounts of IL-6 and IL-8 protein upon stimulation with IL-17A or IL-17F cytokines, supplemented with 1 ng/ml TNF. Pooled SpA or RA SF samples similarly enhanced the inflammatory response to IL-17A and IL-17F simulation in FLS.

Conclusion.

The IL-17A/IL-17F expression ratio is higher in SpA synovitis compared to psoriasis skin. Expression of IL-17A and IL-17F, and the functional response to these cytokines, appear to be similar in SpA and RA synovitis.
Des femmes en lutte
Authors: Bernheim Cathy , Kandel Liliane , Sugier Annie , Zelensky Anne
Published: January 2020

Nous sommes en 1975. Une année que l’ONU a décrétée « Année de LA Femme ». Initiative aussitôt accueillie par le slogan moqueur des féministes : « Menu ONU : — 1974 : Faim – 1975 : Femme – 1976 : Fromage ou Dessert ». Dans le n° 61 de la Revue L’Arc dirigé par Catherine Clément portant le titre « Simone de Beauvoir et la lutte des femmes » paraît un entretien éponyme. Première trace de l’influence du féminisme renaissant (le MLF a tout juste cinq ans d’existence publique), LA Femme a disparu de l’intitulé de l’article. Autre conséquence, et non des moindres, le dispositif adopté. En effet, contrairement à l’usage, c’est Simone de Beauvoir qui pose les questions. Ici à quatre jeunes femmes dont elle a partagé les combats les années précédentes : luttes pour l’avortement libre, pour la reconnaissance des droits des femmes, contre le viol, contre le sexisme avec la création de la rubrique du « Sexisme ordinaire » dans Les Temps Modernes …
La justice climatique sud-africaine face à l’économie fossile
Authors: Bond Patrick
Published: January 2020

Critique du rôle subimpérial que l’Afrique du Sud joue dans la partie australe du continent 1 , l’auteur montre l’effroyable politique énergétique et extractiviste que l’État et les grandes entreprises internationales mènent dans la région. Parallèle à celle du Brésil, la courbe ascendante d’émission de CO2 de l’Afrique du Sud à croisé en 2003 celle de la France et la même courbe par habitant vient de dépasser celle de l’Allemagne. Dans des conditions rendues difficiles par le nombre d’emplois en jeu, le mouvement pour la justice climatique peine à se développer. Outre aux syndicats, inquiets d’un possible passage socialement non maîtrisé d’une économie sale à une économie propre, les activistes sont confrontés à des mouvements de résistance environnementaux qui ne font pas toujours le lien entre les pollutions et les conséquences sur le dérèglement climatique qui entraîne en retour d’autres conséquences cataclysmiques. Les récents cyclones et inondations dans la région ont toutefois accru dans la population la conscience de l’urgence climatique. Les protestations de communautés vivant aux abords des sites d’extraction ou des implantations industrielles se multiplient aussi, tout comme les mouvements éco-féministes et les mouvements de jeunes agissant pour le climat.
Les déclarations d’urgence climatique
Authors: Jouayed Célia , Guittard Juliette
Published: January 2020

Les déclarations d’urgence climatique se multiplient à l’initiative des autorités publiques à tous les échelons de pouvoir et dans de nombreux pays du Nord et du Sud, mais aussi à l’initiative de citoyens. Des ONG réclament auprès de leur gouvernement – notamment celui français – des prises de position semblables. Quelles sont donc les implications juridiques et politiques de telles déclarations ? Sont-elles comparables avec le régime juridique de l’état d’urgence ? Quels avantages et limites présentent-elles ?
De l’universalité de la critique
Authors: Lafont Anne
Published: January 2020

La question de l’appropriation culturelle montre que la réception sociale d’une œuvre contribue à fabriquer l’œuvre, mais la réponse au partage des voix ne doit passer par le renoncement au droit de parler.
La traversée des mondes
Authors: Bidima Jean-Godefroy
Published: January 2020

La critique postcoloniale de l’universel est contradictoire, empêche de penser la mise en commun et exprime un ressentiment. On peut lui opposer la compréhension par Césaire d’un universel riche de tout le particulier.
Capacités d’agir à l’ère numérique
Authors: Feenberg Andrew , Khatchatourov Armen , Chardel Pierre-Antoine
Published: January 2020

Dans la tradition de l’École de Francfort, le philosophe canadien soutient qu’Internet et les réseaux sociaux rendent possibles de nouveaux modes de résistance au capitalisme technologique.
Des espaces
Authors: Godart Patrick
Published: January 2020

La numérisation, la robotique et l’intelligence artificielle sont en train de modifier considérablement les relations humaines et, au-delà de ces dernières, la notion d’espace. Celui-ci est contrainte et ressource ; il génère ainsi un potentiel de créativité pour en définir les limites. L’armée va pouvoir se saisir de cette opportunité créatrice et proposer les nouveaux codes sociaux dans les espaces immatériels de demain, notamment car la socio-psychologie, comme méthode d’analyse, va permettre de réactualiser les rapports d’autorité, d’obéissance et de soumission dans les espaces virtuels et leurs intrications avec le réel tangible de tout conflit armé ou de toute activité opérationnelle.
La ville, un milieu indomptable ?
Authors: Luisetti Laurent
Published: January 2020

Lieu de vie, creuset du pouvoir, organisateur des flux de toutes natures, puissance symbolique, l’espace urbain est un théâtre d’opération qui doit être approché comme un écosystème singulier, dans lequel le combattant doit posséder des savoir-faire adaptés pour comprendre les interactions entre ses différentes dimensions. Est-il finalement indomptable ?
Reconstruire : l’histoire des sciences dans l’œuvre philosophique de Georges Canguilhem
Authors: Braunstein Jean-François
Published: January 2020

Les lectures de Canguilhem comme philosophe appartenant à une tradition néo-kantienne, comme métaphysicien, philosophe « vitaliste », ou « philosophe du concept » proche du structuralisme et du marxisme ont un intérêt, mais montrent aussi des limites. Aborder sa production à partir de son constant intérêt pour l’histoire des sciences peut aider à en restituer l’unité : l’histoire des sciences est certes l’objet de recherche principal de Canguilhem, mais elle est traitée de manière philosophique et a des objectifs éthiques et politiques.
Agir : un engagement « surrationnel ». (Auto)portrait de Canguilhem en résistant
Authors: Sapiro Gisèle
Published: January 2020

Pensée et action sont articulées chez Canguilhem. Si on les inscrit dans le contexte de l’entre-deux-guerres et en les comparant aux trajectoires de contemporains tels que Cavaillès, Rougier et Sartre, l’engagement de Canguilhem pendant la guerre, ainsi que la forme d’action choisie deviennent intelligibles, si, évitant l’essentialisme, on les analyse à la lumière de la notion de disposition, de l’appartenance à des réseaux de sociabilité et de son âge, éléments qui guident autant la propension à prendre des risques que le contenu de ses prises de position.
Hepatoprotective effect of the unsaponifiable matter from olive, linseed and sesame oils against carbon tetrachloride-induced liver injury in rats
Authors: Galal S. M. , Morsi M. K.S. , Abd El-Rahman M. K. , Darwish S. K. , Katry M. A.
Published: January 2020

In the present study, the hepatoprotective activity of the unsaponifiable matter (UNSAP) of olive oil, linseed, and sesame oils against CCl4-induced liver toxicity in rats was investigated. In a preliminary antioxidant study, UNSAP showed pronounced DPPH radical scavenging activity (IC50 6.2-10.8 mg/mL). The constituents of UNSAP were determined by GC-MS. The subcutaneous administration of CCl4, caused liver injury. The hepatoprotective effect of UNSAP was comparable to that of α-tocopherol, a standard antioxidant agent. The co-administration of the investigated UNSAP normalized the activities of serum marker enzymes, alanine aminotransferase (ALT), and aspartate aminotransferase (AST). Furthermore, the serum alkaline phosphatase (ALP) activity and hepatic malondialdehyde (MDA) level were found to be alleviated by pre-treatment with the UNSAP. A histopathological evaluation showed marked improvement in the liver of UNSAP- and α-Tocopherol-treated animals. The hepatoprotective effect could be attributed to the antioxidant characteristics of UNSAP.
The Digital World for Children and its Relationship with Personality Disorders: Exploring Emerging Technologies
Authors: Al Majali Salwa Abdullah
Published: January 2020

Nowadays, children live in the world of modern technologies, which have be-come an integral part of our daily life. Therefore, it is very important to study the influence of the digital world on the child, especially on his personality de-velopment. The impact of the digital world on personality disorder is not enough studied in the UAE and is relevant. The cause of personality disorder in an adult can be mental health problems as a child, namely, emotional instability, excessive fear and anxiety, behavioral problems. The purpose of our research is to evaluate the relationship between the dependence of children on the Internet and the mental health of a child. The study involved 463 students from public and private schools in Dubai aged from 8 to 16 years. Internet Addiction Test, IAT, C. Young (Kimberley S. Young, 1996) was used to determine the level of Internet addiction The Strength and Difficulties Questionnaire (SDQ, 2015) was used to determine the degree of psychological health of a child. Pearson’s correlation analysis showed that there is a positive correlation between the level of Internet addiction and the child’s psychological health, the Pearson correla-tion coefficient is 0.63. The category of internet-addict has the highest rates on the criteria: emotional symptoms (61%), peer relationship problems (73%), hy-peractivity (33%), behavioral problems (43%). High rates of these criteria indi-cate that Internet-dependent children are characterized by aggressiveness, in-creased anxiety, depression, indifference to others, irresponsibility. In addition, they have problems with communication, excessive impulsiveness, lack of de-sire to help others. This result indicates the presence of the negative impact of excessive use of the Internet on the psychological health of the child, which can cause personality disorder.