bluuebunny/crossref_metadata_2025 huggingface dataset:
Estudo de viabilidade técnica da aplicação do método de sísmica de refração para otimização de prováveis obras de ampliação do IFMG ̶ Campus avançado Piumhi
Authors: Dantas Hiago da Silva , Guimarães Marina Vieira Funchal , Tomé Stella Maria Gomes , Araújo Marina Martins , Alves Felipe da Silva
Published: November 2017

O estudo do comportamento do solo é de grande importância para a Engenharia Civil, visto que qualquer edificação interage com a superfície terrestre. Desta forma, o método geofísico denominado sísmica de refração pode fornecer informações relevantes para o entendimento sistêmico da subsuperficie, de modo a complementar dados de investigações diretas, que são pontuais. O presente trabalho tem como objetivo estudar a viabilidade técnica de aplicação do método de sísmica de refração para otimização de prováveis obras de ampliação do IFMG – Campus Avançado Piumhi. Foram obtidas informações a respeito da prática de execução do referido método de prospecção e de características do subsolo local, do prédio atual e de prováveis instalações do Campus. Esses dados foram analisados qualitativamente e forneceram embasamento para o estudo de viabilidade técnica. Concluiu-se que a aplicação da técnica de levantamento por sísmica de refração nas áreas de estudo é viável tecnicamente, podendo, assim, contribuir para elaboração de um perfil praticamente contínuo das interfaces entre as camadas de solo, bem como para o mapeamento do lençol freático. Para orientar possíveis aplicações da técnica de sísmica de refração nas áreas de estudo, foi sugerida uma programação de prospecção por este método no local.Palavras-chave: Sísmica de Refração. Método Indireto de Prospecção. Viabilidade Técnica.Technical viability study of seismic refraction method application in order to optimize probable future expansion works of the IFMG - Campus avançado PiumhiAbstractThe study of soil behavior is very important for Civil Engineering, since any building interacts with the Earth's surface. Thus, the geophysical method called seismic refraction can provide relevant information to the systemic knowledge of subsurface, complementing the direct investigation data, which are specific to the prospected point. This work aims to study the technical viability of applying seismic refraction method in order to optimize probable future expansion works of the IFMG – Campus Avançado Piumhi. Information were obtained about this geophysical method application and features of subsoil, the current building and probable installations of the campus. These data were analyzed qualitatively and provided support to the technical viability study. It was concluded that the seismic refraction method application in the study areas is technically viable and may contribute to elaboration of a practically continuous soil profile as well as to the water table mapping. It was recommended a prospecting program by this method in the study areas in order to guide possible seismic refraction applications on site.Keywords: Seismic Refraction. Indirect Prospection Method. Technical Viability.
Ajuste de curvas pelo método dos quadrados mínimos na elaboração de modelo matemático para estimativa da produção de soja no Estado de Rondônia
Authors: Cestaro Romeu
Published: November 2017

Este artigo tem por objetivo abordar a utilização do ajuste de curvas pelo método dos quadrados mínimos na elaboração de um modelo matemático que seja capaz de estimar a produção de soja para a safra 2015/16 no Estado de Rondônia. Para tanto, dados referentes às safras de soja anteriores foram coletados a partir da base de dados da Companhia Nacional de Abastecimento (CONAB). Verificou-se que o modelo obtido realizou uma boa aproximação com a função tabelada, considerando-se que o maior erro relativo percentual observado tenha sido de 5,78% e erro relativo médio de 2,75%; além disso, a estimativa para a produção de soja em Rondônia para a safra 2015/16, dada pelo modelo, está bastante próxima da estimativa da CONAB para o mesmo período, apresentando uma diferença percentual de 1,39%.Palavras-chave: Métodos numéricos. Método dos Quadrados mínimos. Modelagem matemática. Produção de soja. Rondônia.Least-squares based curve fitting for developing a mathematical model to estimate soybean production in RondoniaAbstractThis paper intends to approach the use of least-squares based curve fitting for developing a mathematical model to estimate the soybean production for 2015/16 crop year in Rondônia. For this purpose, data on previous soybean crop years were collected from the Companhia Nacional de Abastecimento (CONAB) database. It was found that the obtained model made a good approximation to the tabulated function, considering that the greatest relative error percentage observed was 5.78%, and average relative error of 2.75%; also, the estimate for soybean production in Rondonia for 2015/16 crop year, given by the model, is pretty close to CONAB estimate for the same period, presenting a percentage difference of 1.39%.Keywords: Numerical methods. Method of least squares. Mathematical modeling. Soybean production. Rondônia.
Soluções exatas de EDO’s de segunda ordem via simetrias de lie
Authors: Silva Junior Valter Aparecido
Published: November 2017

Existem várias técnicas engenhosas para obter soluções exatas de uma equação diferencial ordinária (EDO). Surpreendentemente, elas são, em sua maioria, casos especiais de métodos mais gerais baseados na invariância da equação sob grupos de simetrias. Neste artigo, será apresentado um desses métodos tendo em vista, particularmente, EDO’s de primeira ordem.Palavras-chave: Simetrias de Lie. EDO’s de primeira ordem. Soluções exatas.AbstractExact solutions of first-order ODEs via lie point sysmmetriesThere are several ingenious techniques to obtain exact solutions from an ordinary differential equation (ODE). Surprisingly, they are mostly special cases of more general methods based onthe invariance of the equation under symmetry groups. In this article, it will be presented one of these methods. focusing, especially, in first-order ODEs.Keywords: Lie point symmetries. First-order ODEs. Exact solutions.
Un proceso de diálogo multiactor para la paz en el País Vasco
Authors: Mínguez-Alcaide Xavier
Published: November 2017

El artículo presenta un proceso de diálogo en el marco del conflicto del País Vasco. Desde una aproximación sistémica a la transformación de conflictos, se diseñó una escena de diálogo para generar consensos sobre las cuestiones fundamentales para la paz en el País Vasco. Tras la fundamentación teórica del estudio, se explica los elementos y fases del proceso de diálogo sostenido. Posteriormente, se presentan los consensos alcanzados sobre las cuestiones trabajadas: reconciliación y convivencia, memoria y narrativa histórica, la dimensión política del conflicto, la participación ciudadana para la paz, víctimas y presos. Finalmente, el artículo presenta recomendaciones para la paz en el País Vasco, como la participación de todos los grupos de interés, la adopción de los derechos humanos como núcleo para la paz, el desarme de ETA y la transformación de la política penitenciaria y antiterrorista.
The Impact of Autonomy on Women’s Agency
Authors: Ortiz-Rodríguez Jeyle , Pillai Vijayan K. , Ribeiro-Ferreira Manuel
Published: November 2017

Kabeer’s simple and illustrative definition of empowerment is “the expansion in people’s ability to make strategic life choices in a context where this ability was previously denied to them” (Kabeer, 1999: 437). Women’s empowerment, then, is conceptualized as an increase in agency over time. Little is it known about the importance of the effect of ‘self directed motivations and desires’ and autonomy on women’s agency. The purpose of this paper is to analyze the relationships among women’s autonomy and labor force participation along with their effects on women’s agency in Nuevo Leon, Mexico. For this, we use the structural equation modeling approach. Our results reveal that women’s autonomy and participation in the labor market positively influence their agency levels.
Peruanos en Córdoba: migraciones, talleres textiles y prácticas comunitarias
Authors: Magliano María José , Perissinotti María Victoria , Zenklusen Denise
Published: November 2017

A partir de los resultados de un trabajo de campo etnográfico, este artículo se propone indagar en las trayectorias laborales en talleres textiles “informales” de migrantes peruanos que viven en territorios de relegación urbana de Córdoba (Argentina), en el marco de las estrategias de acceso a la ciudad y de reproducción familiar. Asimismo, reflexiona sobre las prácticas comunitarias, en tanto recursos de organización barrial tendientes a la autogestión, que se despliegan en esos territorios en relación con el desarrollo de los talleres textiles. Este estudio muestra cómo ciertos procesos que exceden la migración en sí misma –como la presencia/ausencia del Estado, las redes de trabajo informal y la dificultad para el acceso a la vivienda– se relacionan con las movilidades e inserciones laborales de la población migrante de forma tal que posibilitan y estimulan la existencia y proliferación de talleres textiles informales en zonas concretas de la ciudad.
Meaningful Experience Of Motivation To Power Seller With Orientation On Consumer Satisfaction For Identification Of Employee Benefits In The Textile Sales In South Surabaya
Authors: Puspitasari Etin , Harjanti Wulandari
Published: November 2017

Purpose : How to influence meaningful experiences to motivate salespeople with an orientation on the identification Consumer satisfaction with the reward at the sales employee Textile in South Surabaya.

Design/methodology/approach : The research approach used in this study is a quantitative approach, the research focuses on hypothesis testing. The data used is the data measured and will produce results that can be generalized. This study is causal because it will examine the influence between variables.

Findings Based on the results of the regression analysis shows that the significance value (Sig) t is 0.025. Because the value (Sig) 0.025 t less than the level ? 5% (0.05), the satisfaction of reward (pay satisfaction) strengthening the influence of a meaningful experience (experienced meaningfulness) to motivate salespeople to make customer orientation significantly.

Research limitations/implications : This study uses the sales advisor respondents. General job description of this section is to conduct the sale of textile unit according to the targets set, which includes the search for Consumers (prospecting), Negotiation, closing, administrative process of sales, delivery and complaint.

Practical implications : A validity test is used to determine the extent of measuring instruments used actually measure what yang want to be measured. The test is performed using Pearson Product Moment Correlation.

Originality/value : The results showed meaningful experience (experienced meaningfulness) significantly affect the motivation of salespeople to make customer orientation and satisfaction with rewards (pay satisfaction) strengthening the influence of meaningful experience (experienced meaningfulness) to motivate salespeople to make customer orientation significantly.
Impact of Expert Commentary and Student Reflection on Veterinary Clinical Decision-Making Skills in an Innovative Electronic-Learning Case-Based Platform
Authors: Creevy Kate E. , Cornell Karen K. , Schmiedt Chad W. , Park Hyojin , Rong Hui , Radlinsky MaryAnn , Choi Ikseon
Published: November 2017

One challenge in veterinary education is bridging the divide between the nature of classroom examples (well-defined problem solving) and real world situations (ill-defined problem solving). Solving the latter often relies on experiential knowledge, which is difficult to impart to inexperienced students. A multidisciplinary team including veterinary specialists and learning scientists developed an interactive, e-learning case-based module in which students made critical decisions at five specific points (Decision Points [DPs]). After committing to each decision (Original Answers), students reflected on the thought processes of experts making similar decisions, and were allowed to revise their decisions (Revised Answers); both sets of answers were scored. In Phase I, performance of students trained using the module (E-Learning Group) and by lecture (Traditional Group) was compared on the course final examination. There was no difference in performance between the groups, suggesting that the e-learning module was as effective as traditional lecture for content delivery. In Phase II, differences between Original Answers and Revised Answers were evaluated for a larger group of students, all of whom used the module as the sole method of instruction. There was a significant improvement in scores between Original and Revised Answers for four out of five DPs (DP1, p =.004; DP2, p =.04; DP4, p <.001; DP5, p <.001). The authors conclude that the ability to rehearse clinical decision making through this tool, without direct individual feedback from an instructor, may facilitate students' transition from problem solving in a well-structured classroom setting to an ill-structured clinical setting.
Smart Security?
Authors: Beck Kate
Published: November 2017

Smart city initiatives, which involve the connection and automation of city systems and services through the use of information and communication technology, offer significant opportunities to improve efficiency and address many environmental, economic, and social issues faced by U.S. cities. However, as systems become increasingly connected and automated, these systems and the people whom they serve become more vulnerable to an array of security threats, including cybersecurity attacks and attacks on the physical infrastructure and human lives. This paper focuses on how U.S. cities plan to mitigate and respond to the security risks that may arise from the integration of technology into transportation systems and connecting transportation system databases. After examining the U.S. Department of Transportation's recent competition Beyond Traffic: Smart City Challenge, this paper evaluates 32 of the 77 first-round applications to the Smart City Challenge submitted by midsize American cities. The paper provides a set of criteria to evaluate the resiliency of the applicants’ transportation systems, that is, the ability of the cities to withstand and respond to security threats and changing conditions. These criteria include the responses of cities to a range of security risks, the response to unknown risks, plans to accommodate risks, and whether cities plan to work with private or public partners to develop security mitigation and response strategies. The paper concludes that only 19 of the 32 first-round applications to the Smart City Challenge evaluated in this paper address security concerns related to the development of smart transportation systems, and the majority of cities with security plans focus only on mass cybersecurity risks.
Reconstructing an Emergency Evacuation by Ground and Air the wildfire in Fort McMurray, alberta, Canada
Authors: Woo Matthew , Hui Kathy Tin Ying , Ren Kexin , Gan Kai Ernn , Kim Amy
Published: November 2017

The May 2016 wildfire in Fort McMurray in northern Alberta, Canada—the costliest wildfire disaster in Canadian history—led to an areawide evacuation by road and air. Traffic count and flight data were used to assess the characteristics of the evacuation, including estimates of people movements by vehicle and aircraft. The vehicle counts were compared first with historic values to examine traffic patterns and were then used to create an evacuation response curve, which revealed an expected S-shaped curve and highlighted how quickly the evacuation occurred. Finally, data for people evacuated by aircraft were combined with data for people evacuated by ground vehicle to construct a curve of the cumulative number of evacuees leaving the region. This study identified several key implications for evacuation planning and operations. The decision to evacuate residents to temporary shelters in the north was instrumental in the quick removal of everyone from immediate danger via all possible exits. Although an unplanned contraflow operation added roadway capacity out of Fort McMurray, the underuse of the secondary route suggested that the management of traffic routing might have reduced congestion. The evacuation response curve emphasized the volatility of the wildfires, with the resulting evacuations occurring under conditions of a greater immediacy than hurricane evacuations. Finally, the significant role of air transportation in this evacuation indicated that multimodal emergency evacuation plans may be critical for remote communities and sparse networks. These findings may be applied to evacuation planning and policy to improve the efficiency and efficacy of evacuations.
A Multilayered Macro Approach to Conceptualizing the Winescape Construct for Wine Tourism
Authors: Bruwer Johan , Gross Michael J.
Published: November 2017

The wine tourism literature is still in its nascent stage as far as the conceptualization of the winescape construct is concerned. In our study 407 responses are collected through a self-administered survey in an Australian wine region. This research contributes to the winescape knowledge base using a triad of methods and a measured multilayered approach by first applying content analysis to the holistic or free-text technique to measure wine region image. Having identified a number of winescape elements, the pick-any technique is then used to further validate the existence of the winescape elements and some of its dimensions. Finally, we empirically validate a 25-item winescape scale through a measurement model, using a macroapproach (viewing the winescape as a wine region or route) and servicescape theory as framework. The winescape scale tests and extends the applicability of the servicescape framework to the macrocontext of a wine region.
The Impact of Travel Brochures on Perceptions of Authenticity at Aboriginal Tourist Sites
Authors: Chang Janet , Wang Yao-Chin , Lin Tzu Lien
Published: November 2017

This study examines the relationships among effective travel brochures, tourists' characteristics, and perceptions of authenticity of aboriginal heritage sites. Using as a target research scene two aboriginal stone pillars on Taiwan's East Coast, a total of 405 questionnaires are collected
and analyzed. Empirical results reveal that tourists' perceptions toward travel brochure usage differ significantly, depending on their gender, people who they are traveling with, and the methods of transportation. More specifically, this study also finds that tourists' type of travel companion
and methods of transportation significantly influence their perceptions of authenticity during a visit to aboriginal heritage sites. Tourists generally feel that effective travel brochures can enrich their visit experience, assist trip planning, and enhance the sense of authenticity of the
introduced aboriginal heritage sites. Given the significant effects that an effective travel brochure has in strengthening tourists' perceived authenticity, the relevant destination management institutions could cooperate with both formal educational institutes and informal continuing learning
centers in transferring their knowledge into the design of effective travel brochures.
The Construction of a Security Coefficient for Tourist Destinations Based on Travel Insurance Purchase Behavior
Authors: Korstanje Maximiliano E. , George Babu P.
Published: November 2017

Tourism is risky and the insecurities associated with travel to unfamiliar places can reduce tourism demand. However, destinations posing risk are not always avoided; risk could even be an aspect inherently contributing to the attractiveness of certain destination types. Tourists are
known to employ various risk management strategies to mitigate risk, among which travel insurance is the most prominent one. In that sense, travel insurance purchase behavior is a valid measure of the perceived destination security held by tourists: the more the perceived insecurity, the higher
the propensity to buy travel insurance. In this research note, we formulate the concept of a destination security quotient. Implications of the use of this method to measure perceived destination security are discussed.
Determinants of Territorial Seasonality: A Case Study for Spanish Tourist Municipalities
Authors: Turrión-Prats Judith , Duro Juan Antonio
Published: November 2017

Seasonality in tourism consists of the disequilibrium in tourist numbers over the course of the year and has become one of the main problems for the sustainability and growth of the sector. Given the need for quantitative literature on the subject, the primary focus of the present study
is an exploration of the explanatory factors of seasonality across a wide range of Spain's tourist destinations for the period 2006–2012. The econometrical analysis is based on a fixed-effects panel data model. Several implications may be derived in terms of tourist policy.
15N-Labelling and structure determination of adamantylated azolo-azines in solution
Authors: Deev Sergey L , Paramonov Alexander S , Shestakova Tatyana S , Khalymbadzha Igor A , Chupakhin Oleg N , Subbotina Julia O , Eltsov Oleg S , Slepukhin Pavel A , Rusinov Vladimir L , Arseniev Alexander S , Shenkarev Zakhar O
Published: November 2017

Determining the accurate chemical structures of synthesized compounds is essential for biomedical studies and computer-assisted drug design. The unequivocal determination of N-adamantylation or N-arylation site(s) in nitrogen-rich heterocycles, characterized by a low density of hydrogen atoms, using NMR methods at natural isotopic abundance is difficult. In these compounds, the heterocyclic moiety is covalently attached to the carbon atom of the substituent group that has no bound hydrogen atoms, and the connection between the two moieties of the compound cannot always be established via conventional 1H-1H and 1H-13C NMR correlation experiments (COSY and HMBC, respectively) or nuclear Overhauser effect spectroscopy (NOESY or ROESY). The selective incorporation of 15N-labelled atoms in different positions of the heterocyclic core allowed for the use of 1H-15N (JHN) and 13C-15N (JCN) coupling constants for the structure determinations of N-alkylated nitrogen-containing heterocycles in solution. This method was tested on the N-adamantylated products in a series of azolo-1,2,4-triazines and 1,2,4-triazolo[1,5-a]pyrimidine. The syntheses of adamantylated azolo-azines were based on the interactions of azolo-azines and 1-adamatanol in TFA solution. For azolo-1,2,4-triazinones, the formation of mixtures of N-adamantyl derivatives was observed. The JHN and JCN values were measured using amplitude-modulated 1D 1H spin-echo experiments with the selective inversion of the 15N nuclei and line-shape analysis in the 1D 13С spectra acquired with selective 15N decoupling, respectively. Additional spin–spin interactions were detected in the 15N-HMBC spectra. NMR data and DFT (density functional theory) calculations permitted to suggest a possible mechanism of isomerization for the adamantylated products of the azolo-1,2,4-triazines. The combined analysis of the JHN and JCN couplings in 15N-labelled compounds provides an efficient method for the structure determination of N-alkylated azolo-azines even in the case of isomer formation. The isomerization of adamantylated tetrazolo[1,5-b][1,2,4]triazin-7-ones in acidic conditions occurs through the formation of the adamantyl cation.
Trends in Atmospheric Properties of Neptune-size Exoplanets
Authors: Crossfield Ian J. M. , Kreidberg Laura
Published: November 2017

Precise atmospheric observations have been made for a growing sample of warm Neptunes. Here, we investigate the correlations between these observations and a large number of system parameters to show that, at 95% confidence, the amplitude of a warm Neptune’s spectral features in transmission correlates with either its equilibrium temperature (T
eq) or its bulk H/He mass fraction (f
HHe)—in addition to the standard

scaling. These correlations could indicate either more optically thick, photochemically produced hazes at lower T
eq and/or higher-metallicity atmospheres for planets with smaller radii and lower f
HHe. We derive an analytic relation to estimate the observing time needed with JWST/NIRISS to confidently distinguish a nominal gas giant’s transmission spectrum from a flat line. Using this tool, we show that these possible atmospheric trends could reduce the number of expected TESS planets accessible to JWST spectroscopy by up to a factor of eight. Additional observations of a larger sample of planets are required to confirm these trends in atmospheric properties as a function of planet or system quantities. If these trends can be confidently identified, the community will be well-positioned to prioritize new targets for atmospheric study and eventually break the complex degeneracies between atmospheric chemistry, composition, and cloud properties.
The Araucaria Project: The Distance to the Fornax Dwarf Galaxy from Near-infrared Photometry of RR Lyrae Stars*
Authors: Karczmarek Paulina , Pietrzyński Grzegorz , Górski Marek , Gieren Wolfgang , Bersier David
Published: November 2017

We have obtained single-phase near-infrared (NIR) magnitudes in the J and K bands for 77 RR Lyrae (RRL) stars in the Fornax Dwarf Spheroidal Galaxy. We have used different theoretical and empirical NIR period–luminosity–metallicity calibrations for RRL stars to derive their absolute magnitudes, and found a true, reddening-corrected distance modulus of

mag. This value is in excellent agreement with the results obtained within the Araucaria Project from the NIR photometry of red clump stars (20.858 ± 0.013 mag), the tip of the red giant branch (

mag), as well as with other independent distance determinations to this galaxy. The effect of metallicity and reddening is substantially reduced in the NIR domain, making this method a robust tool for accurate distance determination at the 5% level. This precision is expected to reach the level of 3% once the zero points of distance calibrations are refined thanks to the Gaia mission. NIR period–luminosity–metallicity relations of RRL stars are particularly useful for distance determinations to galaxies and globular clusters up to 300 kpc, that lack young standard candles, like Cepheids.
Empirical Bolometric Fluxes and Angular Diameters of 1.6 Million Tycho-2 Stars and Radii of 350,000 Stars with Gaia DR1 Parallaxes
Authors: Stevens Daniel J. , Stassun Keivan G. , Gaudi B. Scott
Published: November 2017

We present bolometric fluxes and angular diameters for over 1.6 million stars in the Tycho-2 catalog, determined using previously determined empirical color-temperature and color-flux relations. We vet these relations via full fits to the full broadband spectral energy distributions for a subset of benchmark stars and perform quality checks against the large set of stars for which spectroscopically determined parameters are available from LAMOST, RAVE, and/or APOGEE. We then estimate radii for the 355,502 Tycho-2 stars in our sample whose Gaia DR1 parallaxes are precise to

. For these stars, we achieve effective temperature, bolometric flux, and angular diameter uncertainties of the order of 1%–2% and radius uncertainties of order 8%, and we explore the effect that imposing spectroscopic effective temperature priors has on these uncertainties. These stellar parameters are shown to be reliable for stars with

 ≲ 7000 K. The over half a million bolometric fluxes and angular diameters presented here will serve as an immediate trove of empirical stellar radii with the Gaia second data release, at which point effective temperature uncertainties will dominate the radius uncertainties. Already, dwarf, subgiant, and giant populations are readily identifiable in our purely empirical luminosity-effective temperature (theoretical) Hertzsprung–Russell diagrams.
The Prototypical Young L/T-Transition Dwarf HD 203030B Likely Has Planetary Mass
Authors: Miles-Páez Paulo A. , Metchev Stanimir , Luhman Kevin L. , Marengo Massimo , Hulsebus Alan
Published: November 2017

Upon its discovery in 2006, the young L7.5 companion to the solar analog HD 203030 was found to be

K cooler than older late-L dwarfs, which is quite unusual. HD 203030B offered the first clear indication that the effective temperature at the L-to-T spectral type transition depends on surface gravity: now a well-known characteristic of low-gravity ultra-cool dwarfs. An initial age analysis of the G8V primary star indicated that the system was 130–400 Myr old, and so the companion would be between 12 and 31 

. Using moderate-resolution near-infrared spectra of HD 203030B, we now find features of very low gravity comparable to those of 10–150 Myr old L7–L8 dwarfs. We also obtained more accurate near-infrared and Spitzer/IRAC photometry, and we find a

color of 2.56 ± 0.13 mag—comparable to those observed in other young planetary-mass objects—and a luminosity of log(

) = −4.75 ± 0.04 dex. We further re-assess the evidence for the young age of the host star, HD 203030, with a more comprehensive analysis of the photometry and updated stellar activity measurements and age calibrations. Summarizing the age diagnostics for both components of the binary, we adopt an age of 100 Myr for HD 203030B and an age range of 30–150 Myr. Using cloudy evolutionary models, the new companion age range and luminosity result in a mass of 11 

with a range of 8–15 

, and an effective temperature of 1040 ± 50 K.
L’emprise de la déliaison
Authors: Diet Emmanuel
Published: November 2017

Les anxiétés contemporaines, symptômes du malêtre engendré par le capitalisme paradoxant, peuvent être interprétées comme la conséquence de la casse des repères, organisateurs et cadres symboliques. Après le rappel de la violence présente dans la réalité sociale-historique et l’examen des déliaisons à l’œuvre dans la culture, l’auteur proposera l’hypothèse selon laquelle l’activation dans le trans-subjectif des grandes blessures narcissiques identifiées par Freud et de leur nouvelle destructivité à l’ère numérique et technologique est vécue et peut être pensée comme une menace sur l’humanité en tant que telle.
Malaise dans les start-up. Entre désir héroïque et anxiété créatrice
Authors: Buquet Romain , Luca Nathalie , Bouilloud Jean-Philippe
Published: November 2017

Cet article porte sur l’anxiété des entrepreneurs du numérique, ou start-uppers, souvent présentés comme des héros modernes . Dix-neuf entretiens cliniques de type « récit de vie » ont été conduits par une anthropologue et un chercheur en gestion dans un incubateur phare de start-up parisiennes : le numa. Ces résultats exploratoires n’ont pas volonté à être généralisés et demanderaient d’être approfondis par d’autres études complémentaires. Ils montrent que ces jeunes entrepreneurs, réunis par un capital culturel et économique fort et un rejet paradoxal de la grande entreprise, construisent une identité collective par comportement mimétique marqué par une ambivalence entre peur de l’échec et investissement narcissique majeur dans leur projet. Ils sont soumis à une anxiété créatrice qui lie leur engagement et leur volonté de changer le monde.
Les sentiments d’insécurité face aux adolescents placés : l’envers d’une sécurisation des conditions de travail ?
Authors: Blondel Frédéric , Delzescaux Sabine
Published: November 2017

S’appuyant sur un ensemble d’interventions dans des foyers de placement pour mineurs et jeunes majeurs, les auteurs s’attachent à montrer les principales sources de l’insécurité au travail des personnels éducatifs. Pour ces professionnels, l’insécurité au travail est à rapporter en première instance à la violence accrue dont les jeunes font preuve et ils attirent fortement l’attention sur le fait que les profils de ces adolescents ne cessent de se dégrader. Pourtant, l’analyse approfondie sur une période de cinquante ans des rapports d’activité d’une structure de placement conduit à mettre en doute cette hypothèse. Plus que le profil des adolescents placés, ce sont les conditions de travail et d’exercice de la profession qu’il convient d’analyser. Leur sécurisation progressive semble avoir comme contrepartie un accroissement de la sensibilité des professionnels à l’égard de l’altérité de ces adolescents qui leur paraît de plus en plus inaccessible.
Soutien organisationnel, solidarités sociales et engagement des employés : le rôle modérateur de la pauvreté laborieuse
Authors: Tungisa Kapela Danny , Pohl Sabine
Published: November 2017

Cette recherche vise à analyser les relations entre le support organisationnel perçu, la qualité de la relation leader-membre, le support social, l’engagement affectif et la satisfaction au travail dans un contexte africain. Nous analyserons le rôle modérateur de la pauvreté dans ces relations. Nous utiliserons comme cadre théorique la théorie de l’échange social. L’échantillon sur lequel repose cette étude comprend 367 employés provenant d’une entreprise publique située à Kinshasa. Conformément à nos attentes, la qualité de l’échange leader-membre ainsi que le support organisationnel perçu sont positivement associés à l’engagement affectif. La pauvreté est par ailleurs bien un modérateur de la relation entre le support social et la satisfaction au travail. Par contre, contrairement à nos hypothèses, les résultats ne montrent pas de relation entre le support organisationnel perçu et la satisfaction au travail. Cette recherche met ainsi en évidence l’intérêt de prendre en considération la qualité du management et du support social dans le développement de l’engagement à l’égard de l’organisation et de la satisfaction au travail.
Live Attenuated Leishmania donovani Centrin Gene–Deleted Parasites Induce IL-23–Dependent IL-17–Protective Immune Response against Visceral Leishmaniasis in a Murine Model
Authors: Banerjee Antara , Bhattacharya Parna , Dagur Pradeep K. , Karmakar Subir , Ismail Nevien , Joshi Amritanshu B. , Akue Adovi D. , KuKuruga Mark , McCoy John Philip , Dey Ranadhir , Nakhasi Hira L.
Published: November 2017

No vaccine exists against visceral leishmaniasis. To develop effective vaccines, we have previously reported protective role of live attenuated centrin gene–deleted Leishmania donovani (LdCen−/−) parasites through induction of Th1 type immune response in mice, hamsters, and dogs. In this study, we specifically explored the role of Th17 cells in LdCen−/−-induced host protection in mice. Our results showed that compared with wild-type L. donovani infection, LdCen−/− parasites induce significantly higher expression of Th17 differentiation cytokines in splenic dendritic cells. There was also induction of IL-17 and its promoting cytokines in total splenocytes and in both CD4 and CD8 T cells following immunization with LdCen−/−. Upon challenge with wild-type parasites, IL-17 and its differentiating cytokines were significantly higher in LdCen−/−-immunized mice compared with nonimmunized mice that resulted in parasite control. Alongside IL-17 induction, we observed induction of IFN-γ–producing Th1 cells as reported earlier. However, Th17 cells are generated before Th1 cells. Neutralization of either IL-17 or IFN-γ abrogated LdCen−/−-induced host protection further confirming the essential role of Th17 along with Th1 cytokines in host protection. Treatment with recombinant IL-23, which is required for stabilization and maintenance of IL-17, heightened Th17, and Tc17 responses in immunized mice splenocytes. In contrast, Th17 response was absent in immunized IL-23R−/− mice that failed to induce protection upon virulent Leishmania challenge suggesting that IL-23 plays an essential role in IL-17–mediated protection by LdCen−/− parasites. This study unveiled the role of IL-23–dependent IL-17 induction in LdCen−/− parasite-induced immunity and subsequent protection against visceral leishmaniasis.
Usus politicus evangelii
Authors: Van Wyk Gabriël M.J.
Published: November 2017

No abstract available
Calvin, Van Lodenstein and Barth: Three perspectives on the necessity of church reformation
Authors: Dreyer Wim A.
Published: November 2017

No abstract available
Om vryelik asem te haal in die lewensruimte van die trinitariese God: Jürgen Moltmann se bydrae tot ’n Reformatoriese teologie van solidariteit
Authors: Van Wyk Tanya
Published: November 2017

No abstract available
Openheid, geslotenheid en moontlikheid: Die reformatore en ander godsdienste
Authors: Beyers Jaco
Published: November 2017

No abstract available
The will to embrace: An analysis of Christian-Muslim relations
Authors: Baatsen Ronald Allen
Published: November 2017

No abstract available
An assessment of the Theology of Religions
Authors: Janse van Rensburg Johannes
Published: November 2017

No abstract available
Theology of religions: Models for interreligious dialogue in South Africa
Authors: Freeman Tessa
Published: November 2017

No abstract available
Individual and interactive effects of warming and CO2 on Pseudo-nitzschia subcurvata and Phaeocystis antarctica, two dominant phytoplankton from the Ross Sea, Antarctica
Authors: Zhu Zhi , Qu Pingping , Gale Jasmine , Fu Feixue , Hutchins David A.
Published: November 2017

Abstract. We investigated the effects of temperature and CO2 variation on the growth and elemental composition of cultures of the diatom Pseudo-nitzschia subcurvata and the prymnesiophyte Phaeocystis antarctica, two ecologically dominant phytoplankton species isolated from the Ross Sea, Antarctica. To obtain thermal functional response curves, cultures were grown across a range of temperatures from 0 to 14 °C. In addition, a co-culturing experiment examined the relative abundance of both species at 0 and 6 °C. CO2 functional response curves were conducted from 100 to 1730 ppm at 2 and 8 °C to test for interactive effects between the two variables. The growth of both phytoplankton was significantly affected by temperature increase, but with different trends. Growth rates of P. subcurvata increased with temperature from 0 °C to maximum levels at 8 °C, while the growth rates of P. antarctica only increased from 0 to 2 °C. The maximum thermal limits of P. subcurvata and P. antarctica where growth stopped completely were 14 and 10 °C, respectively. Although P. subcurvata outgrew P. antarctica at both temperatures in the co-incubation experiment, this happened much faster at 6 than at 0 °C. For P. subcurvata, there was a significant interactive effect in which the warmer temperature decreased the CO2 half-saturation constant for growth, but this was not the case for P. antarctica. The growth rates of both species increased with CO2 increases up to 425 ppm, and in contrast to significant effects of temperature, the effects of CO2 increase on their elemental composition were minimal. Our results suggest that future warming may be more favorable to the diatom than to the prymnesiophyte, while CO2 increases may not be a major factor in future competitive interactions between Pseudo-nitzschia subcurvata and Phaeocystis antarctica in the Ross Sea.
Optical properties of size fractions of suspended particulate matter in littoral waters of Québec
Authors: Mohammadpour Gholamreza , Gagné Jean-Pierre , Larouche Pierre , Montes-Hugo Martin A.
Published: November 2017

Abstract. Mass-specific absorption (ai∗(λ)) and scattering (bi∗(λ)) coefficients were derived for four size fractions (i =  0.2–0.4, 0.4–0.7, 0.7–10, and > 10 µm, λ = wavelength in nm) of suspended particulate matter (SPM) and with samples obtained from surface waters (i.e., 0–2 m depth) of the Saint Lawrence Estuary and Saguenay Fjord (SLE-SF) during June of 2013. For the visible–near-infrared spectral range (i.e., λ = 400–710 nm), mass-specific absorption coefficients of total SPM (i.e., particulates > 0.2 µm) (hereafter aSPM∗) had low values (e.g., < 0.01 m2 g−1 at λ = 440 nm) in areas of the lower estuary dominated by particle assemblages with relatively large mean grain size and high particulate organic carbon and chlorophyll a per unit of mass of SPM. Conversely, largest aSPM∗ values (i.e., > 0.05 m2 g−1 at λ = 440 nm) corresponded with locations of the upper estuary and SF where particulates were mineral-rich and/or their mean diameter was relatively small. The variability of two optical proxies (the spectral slope of particulate beam attenuation coefficient and the mass-specific particulate absorption coefficient, hereafter γ and Svis, respectively) with respect to changes in particle size distribution (PSD) and chemical composition was also examined. The slope of the PSD was correlated with bi∗(550) (Spearman rank correlation coefficient ρs up to 0.37) and ai∗(440) estimates (ρs up to 0.32) in a comparable way. Conversely, the contribution of particulate inorganic matter to total mass of SPM (FSPMPIM) had a stronger correlation with ai∗ coefficients at a wavelength of 440 nm (ρs up to 0.50). The magnitude of γ was positively related to FSPMi or the contribution of size fraction i to the total mass of SPM (ρs up to 0.53 for i = 0.2–0.4 µm). Also, the relation between γ and FSPMPIM variability was secondary (ρs = −0.34, P > 0.05). Lastly, the magnitude of Svis was inversely correlated with aSPM∗(440) (ρs = −0.55, P = 0.04) and FSPMPIM (ρs = −0.62, P = 0.018) in sampling locations with a larger marine influence (i.e., lower estuary).
More homogeneous wind conditions under strong climate change decrease the potential for inter-state balancing of electricity in Europe
Authors: Wohland Jan , Reyers Mark , Weber Juliane , Witthaut Dirk
Published: November 2017

Abstract. Limiting anthropogenic climate change requires the fast decarbonization of the electricity system. Renewable electricity generation is determined by the weather and is hence subject to climate change. We simulate the operation of a coarse-scale fully renewable European electricity system based on downscaled high-resolution climate data from EURO-CORDEX. Following a high-emission pathway (RCP8.5), we find a robust but modest increase (up to 7 %) of backup energy in Europe through the end of the 21st century. The absolute increase in the backup energy is almost independent of potential grid expansion, leading to the paradoxical effect that relative impacts of climate change increase in a highly interconnected European system. The increase is rooted in more homogeneous wind conditions over Europe resulting in intensified simultaneous generation shortfalls. Individual country contributions to European generation shortfall increase by up to 9 TWh yr−1, reflecting an increase of up to 4 %. Our results are strengthened by comparison with a large CMIP5 ensemble using an approach based on circulation weather types.
Evaluation of integrated assessment model hindcast experiments: a case study of the GCAM 3.0 land use module
Authors: Snyder Abigail C. , Link Robert P. , Calvin Katherine V.
Published: November 2017

Abstract. Hindcasting experiments (conducting a model forecast for a time period in which observational data are available) are being undertaken increasingly often by the integrated assessment model (IAM) community, across many scales of models. When they are undertaken, the results are often evaluated using global aggregates or otherwise highly aggregated skill scores that mask deficiencies. We select a set of deviation-based measures that can be applied on different spatial scales (regional versus global) to make evaluating the large number of variable–region combinations in IAMs more tractable. We also identify performance benchmarks for these measures, based on the statistics of the observational dataset, that allow a model to be evaluated in absolute terms rather than relative to the performance of other models at similar tasks. An ideal evaluation method for hindcast experiments in IAMs would feature both absolute measures for evaluation of a single experiment for a single model and relative measures to compare the results of multiple experiments for a single model or the same experiment repeated across multiple models, such as in community intercomparison studies. The performance benchmarks highlight the use of this scheme for model evaluation in absolute terms, providing information about the reasons a model may perform poorly on a given measure and therefore identifying opportunities for improvement. To demonstrate the use of and types of results possible with the evaluation method, the measures are applied to the results of a past hindcast experiment focusing on land allocation in the Global Change Assessment Model (GCAM) version 3.0. The question of how to more holistically evaluate models as complex as IAMs is an area for future research. We find quantitative evidence that global aggregates alone are not sufficient for evaluating IAMs that require global supply to equal global demand at each time period, such as GCAM. The results of this work indicate it is unlikely that a single evaluation measure for all variables in an IAM exists, and therefore sector-by-sector evaluation may be necessary.
Wave–current interaction during Hudhud cyclone in the Bay of Bengal
Authors: Samiksha Volvaiker , Vethamony Ponnumony , Antony Charls , Bhaskaran Prasad , Nair Balakrishnan
Published: November 2017

Abstract. The present work describes the interaction between waves and currents utilizing a coupled ADCIRC+SWAN model for the very severe cyclonic storm Hudhud, which made landfall at Visakhapatnam on the east coast of India in October 2014. Model-computed wave and surge heights were validated with measurements near the landfall point. The Holland model reproduced the maximum wind speed of  ≈  54 m s−1 with the minimum pressure of 950 hPa. The modelled maximum surge of 1.2 m matches with the maximum surge of 1.4 m measured off Visakhapatnam. The two-way coupling with SWAN showed that waves contributed  ≈  0.25 m to the total water level during the Hudhud event. At the landfall point near Visakhapatnam, the East India Coastal Current speed increased from 0.5 to 1.8 m s−1 for a short duration ( ≈  6 h) with net flow towards the south, and thereafter reversed towards the north. An increase of  ≈  0.2 m in Hs was observed with the inclusion of model currents. It was also observed that when waves travelled perpendicular to the coast after crossing the shelf area, with current towards the southwest, wave heights were reduced due to wave–current interaction; however, an increase in wave height was observed on the left side of the track, when waves and currents opposed each other.
Phenotypic-Genotypic Characterization and Enzyme Activity of Bacillus Spp. Isolated from Saricay Stream
Authors: Dogru Nurcihan Hacıoglu , Doganay Derya
Published: November 2017

63 bacteria consist of Bacillus genus were isolated from water samples of Saricay stream (Canakkale). Isolates were characterized for phenotypic properties, antimicrobial and heavy metal resistance and evaluated for some extracellular enzyme activities. 13 bacterial colonies were selected according to their different phenotypic-genotypic characteristics and described by 16S rDNA sequence analysis methods.There was a high incidence of resistance to Cefoxitin (CN30 μg/mL), while all of isolates sensitive against to Kanamycin (K30 μg/mL) and Chloramphenicol (C30 μg/mL). The trends in heavy metal resistance: Chromium (Cr) > (Zinc ) Zn > Copper (Cu) > Manganese (Mn). Totally 55 protease, 49 amylase, 30 cellulase and 59 lipase activities were determined from all of isolated Bacillus sp. None of the isolates showed the esterase activity. As a result of molecular identification six isolates were showed the highest similarity to different strain of Bacillus amyloliquefaciens and others similar to Bacillus sp. B22(2008), B. subtilis SD-45, Sporolactobacillus dextrus, Bacillus sp. IHBB3375, B. cereus RJ1, Uncultured organism clone ELU0176-T465-S-NIPCRAMgANa_000604, Uncultured organism clone ELU0110-T273-S-NI_000292.This study is first of its kind to explore the bacterial enzyme resource from Saricay stream. This work forms the foundation for future research to enzyme characterization and assessed using in industrial fields explores the biotechnological potential of these Bacillus sp. isolates.