Description of the spider Verita williamsi, a new genus and species from Santa Fe, Argentina (Araneae, Gnaphosidae)

Verita williamsi, nuevo género y especie (Araneae, Gnaphosidae) se describe a partir de especímenes colectados recientemente en el norte de la provincia de Santa Fe, Argentina. Estas arañas muestran una peculiar combinación de caracteres, solamente dos fúsulas de glándulas piriformes, setas alineadas en la escópula de las patas y las hileras anteriores no muy apartadas entre ellas, que sugieren que la especie está cercanamente emparentada a Micaria y a algunos de los representantes pequeños del grupo de géneros Anzacia. Se distingue de todos ellos por tener tres dientes en el retromargen queliceral y por carecer de setas escamosas iridiscentes en el abdomen.Verita williamsi, nuevo género y especie (Araneae, Gnaphosidae) se describe a partir de especímenes colectados recientemente en el norte de la provincia de Santa Fe, Argentina. Estas arañas muestran una peculiar combinación de caracteres, solamente dos fúsulas de glándulas piriformes, setas alineadas en la escópula de las patas y las hileras anteriores no muy apartadas entre ellas, que sugieren que la especie está cercanamente emparentada a Micaria y a algunos de los representantes pequeños del grupo de géneros Anzacia. Se distingue de todos ellos por tener tres dientes en el retromargen queliceral y por carecer de setas escamosas iridiscentes en el abdomen.Fil: Ramirez, Martin Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Grismado, Cristian José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentin

Collaborative Geographic Information Systems for Business Intelligence

This paper shows a number of sceneries where information (specifically, geographical-related information) is lost because there is no method for storing or sharing it. This research has been done with the aim to solve those scenery problems in a general way, by means of a geographical information system that can store geographical-related information and publish it in order to avoid loss of information and enabling geographical information sharin

Positioning of young women in their future career: investigation of the influence of a video on personal perception

Women are globally underrepresented in the higher levels of hierarchy of the firms. This is not necessarily due to a lack of ambition, but mainly to barriers that impede women from reaching the top or slow down their ascent. This phenomenon is recognized worldwide and called the “glass ceiling” effect. It is the presence of transparent obstacles that appear in women’s career and makes it difficult, or impossible, to rise to a higher position. On one hand the present report analyses the situation of women in top-level positions and explains what are the challenges, and on the other hand, the “raison d’être” of this report, is to conduct a psychosocial experiment on young women in Switzerland and Peru using an online survey (with and without video). Young women are the employees of tomorrow, thus it can be interesting to have their opinion. This experiment allowed gathering data on young women’s views and expectations on this theme and to determine their perception of their future careers. In total 547 answers were collected, most of them from the French part of Switzerland. This experiment had three objectives; the first was to understand young women’s selfperceptions of a role in a future leading position, the second was to investigate the influence of culture on young women’s positioning and the final was to determine the possible impact of a video on the positioning of young women. Results from the analysis of the data showed that the majority of the respondents had no knowledge of the glass ceiling effect. Moreover, in general young women in Switzerland and Peru had ambition to reach a top-level position and believed that they would be able to reach a work-life balance, which is one of the greatest challenges, that women face today. Young women appeared to have self-limiting behaviors, a principal barrier to women’s advancement. However, a cultural difference was noticed as Peruvian young women showed more self-confidence on their positioning than Swiss young women. A principal finding on ambition was that young women with ambition recognize less the importance and possible impact of the barriers they might encounter in their career than young women without ambition. Finally, the impact of the video was not conclusive as no significant differences in the answers were reported between the individuals who watched the video and those who did not

L'hôtellerie genevoise face aux géants de la réservation en ligne

Réserver une chambre d’hôtel aujourd’hui n’a jamais été aussi simple et aussi rapide. En quelques clics et en moins de deux minutes, votre chambre est réservée et cela peu importe le pays dans lequel on se trouve. En effet, depuis que l’outil Internet s’est très largement démocratisé, de nouveaux intermédiaires ont vu le jour. Ces nouveaux agents sont des plateformes de réservation en ligne qui proposent aux particuliers, ainsi qu’aux professionnels, les mêmes services que des intermédiaires classiques tels que les agences de voyage. On remarquera qu’il est très courant dans ce marché qu’il y ait un intermédiaire entre l’hôtelier et le client final. Il en ressort que ces nouveaux intermédiaires ont pris une place très importante. En effet, très peu de plateformes se partagent le marché, les plus grandes rachetant systématiquement les plus petites, le marché est donc extrêmement concentré. Ils jouissent d’un certain pouvoir de marché surtout lorsque la plus importante de ces plateformes enregistre à elle seule 70% des réservations en Suisse1. Les objectifs de ce travail de Bachelor sont d’analyser les relations qu’entretiennent les hôteliers genevois avec les plateformes de réservation en ligne (OTA, online travel agencies) et établir un état des lieux de la situation actuelle. Pour mener à bien ce travail et être le plus possible sur le terrain, il me paraissait essentiel d’aller à la rencontre des spécialistes du domaine. Trois hôteliers indépendants genevois ainsi qu’une plateforme de réservation alternative lausannoise ont accepté de répondre à mes questions. C’est sur la base de ces interviews, de rapports et d’articles de presse que j’ai construit l’analyse et la synthèse de ce travail

Solid Oxide Fuel Cells based on Lanthanum Tungstates Electrolytes

Lanthanum tungstate with composition La27W4NbO55- (LWNO) has been tested as proton conductor electrolyte for Solid Oxide Fuel Cells (SOFCs). For this purpose, different electrodes and composite electrodes are considered, including: La0.8Sr0.2MnO3-, La0.6Sr0.4Co1-xFexO3-, La0.5Sr0.5Cr0.5Mn0.5O3-, SrFe0.75Nb0.25O3- and NiO. Chemical compatibility between the cell components is investigated by X-ray powder diffraction (XRPD) and energy dispersive spectroscopy (EDS). Furthermore, area specific resistance (ASR) of the different electrodes is determined in symmetrical cells by impedance spectroscopy. XRPD and EDS analysis do not reveal significant bulk reactivity between most of these electrodes and LWNO electrolyte in the typical operating temperature range of a SOFC (600-900 ºC). However, minor interdiffusion of elements at the electrolyte/electrode interface affects both the ohmic losses and electrode polarization of the cells. ASR values are significantly improved by using a buffer layer of Ce0.8Gd0.2O1.9, between the electrolyte and electrode materials, to prevent reactivity. A single cell with 350 µm thick electrolyte, NiO-Ce0.8Gd0.2O1.9 anode and La0.6Sr0.4Co0.8Fe0.2O3- cathode, generates maximum power densities of 140 and 18 mWcm-2 at 900 and 650 ºC, respectively.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Compatibility and performance of SOFCs based on lanthanum tungstates

Rare-earth tungstates with general composition “Ln6WO12” have attracted great attention in last few years due to their relatively high mixed proton-electron conductivity [1, 2]. One of the main ad-vantages of these electrolytes, compared to the traditional perovskites based on BaCeO3, is that they exhibit high tolerance towards CO2 and H2S environments. Therefore, this material is a potential electrolyte for proton conducting solid oxide fuel cells (PC-SOFC). In this work, the lanthanum tungstate with com-position La27W4NbO55-δ (LWNO) has been tested as proton conductor electrolyte [3]. For this purpose, different electrodes and composite electrodes have been considered, including: La0.8Sr0.2MnO3-δ, La0.6Sr0.4Co1-xFexO3-δ, La0.5Sr0.5Cr0.5Mn0.5O3-δ, SrFe0.75Nb0.25O3-δ and NiO. Chemical compatibility between the cell compo-nents is investigated by X-ray powder diffraction (XRPD) and energy dispersive spectroscopy (EDS). Furthermore, area specific resistance (ASR) of the different electrodes is determined in symmetrical cells by impedance spectroscopy. XRPD and EDS analysis do not reveal significant bulk reactivity between most of these electrodes and LWNO electrolyte in the typical operating temperature range of a SOFC (600-900 ºC). However, minor interdiffusion of elements at the electrolyte/electrode interface affects both the ohmic losses and electrode polarization of the symmetric cells. ASR values are significantly improved by using a buffer layer of Ce0.8Gd0.2O1.9, between the electrolyte and electrode materials, to prevent reactivity. A single cell with 350 µm thick electrolyte, NiO-Ce0.8Gd0.2O1.9 anode and La0.6Sr0.4Co0.8Fe0.2O3-δ cathode, generates maximum power densities of 140 and 18 mWcm-2 at 900 and 650 ºC, respectively. Hence, lanthanum tungstates could be competitive proton conductors for PC-SOFCs with similar performance to those based on BaZrO3 if thin film electrolytes are used.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

La imposibilidad del multiculturalismo en una nación multicultural

Éste es un ensayo que busca aportar algunas ideas al todavía vigente debate en torno a que en México se ha impuesto un derecho nacional sin considerar las categorías particulares de las comunidades indígenas. Se propone una idea que gira en torno a si la existencia de un sistema jurídico con tendencia homogeneizadora, que porta un criterio monoétnico de escaso respeto al pluralismo jurídico y a la diversidad cultural, es compatible con la multiculturalidad real. La intención es evidenciar cómo la creación de un campo discursivo que haga visible a los indígenas no necesariamente se traduce en un sistema jurídico que posibilite su existencia ontológica. Asimismo, se trata de mostrar el proceso de construcción de alteridad que cumple la doble función de fuente de identidad nacional y de culturalización indígena con fines de visibilidad taxonómica que explican la diversidad pero también la utilizan

Ce0.8Gd0.2O2‐δ / La0.6Sr0.4CoO3 Heterostructures prepared by pulsed laser deposition

Oxide interfaces have received greater attention due to the possibility to obtain properties that are very different from bulk materials. Due to the wide variety of electronic and ionic phenomena than can be detected at the interfaces, such materials have many technological applications [1]. Attention is being drawn to oxide heterostructures, a new family of artificial materials where electronic and ionic properties can be modulated at the interfaces by varying the characteristics of the layers [2, 3]. Slight variations in the near anionic-cationic order might take place if there exists strained interfaces. The interest in multilayared heterostructures derives from the mobility deffects and the space-charge-zone effects at the interfaces. In addition, a new degree of freedom related to the capacitive and resistive contributions is provided as a consequence of the size effects of these artificial structures. In the present work, for the first time, we investigate the structure, microstructure and electrical properties of a new family of heterostructured materials with alternated thin layers of La0.6Sr0.4CoO3 (LSC) and Ce0.8Gd0.2O2-δ (CGO) deposited by pulsed laser deposition on (110) NdGaO3 (NGO) single crystal substrates. In order to evaluate the interfacial contribution to ionic-electronic conductivity and know what is actually happens at the interface of MIECs, different heterostructures were prepared by varying both the number of bilayers (N) and the total thickness of the samples (N = 2 and 5; and the thickness were 50, 100 and 300 nm).Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Le 6 décembre 1992: un dimanche noir ?

Si nous regardons une carte de l’Union Européenne à l’heure actuelle, il est possible de voir un petit territoire au milieu n’en faisant pas partie. En effet, tel un célèbre village gaulois qui résiste encore à l’envahisseur, la Suisse ne fait pas partie de l’Union Européenne. La question de l’adhésion à l’Union Européenne n’a, d’ailleurs, jamais vraiment été à l’ordre du jour en Suisse. Toutefois, la Suisse ne peut pas se passer de sa grande voisine européenne. Elle est le principal partenaire économique de la Confédération helvétique. Pourtant, les relations sont souvent compliquées entre les deux entités. Le 6 décembre 1992, la Suisse a pourtant eu l’occasion de se rapprocher de l’Union Européenne. À cette date, le peuple a dû se prononcer sur l’adhésion à l’Espace Économique Européen. Cet objet soutenu par la majeure partie de la classe politique et par les milieux économiques ne va pourtant pas passer la rampe. 50,3% de la population suisse et une majorité des cantons ayant décidé de refuser cette adhésion. La majorité des politiciens et les milieux économiques sont mortifiés Le conseiller fédéral radical Jean-Pascal Delamuraz va même avoir un formule historique en qualifiant cette journée de « dimanche noir » notamment pour l’économie. Ce résultat va foncièrement changer la Suisse politiquement mais aussi dans ces rapports avec l’UE. Plus de vingt ans après, les accords bilatéraux ont été mis en place et plusieurs crises mondiales sont passées par là. Avec le recul, peut-on considérer ce jour de votation comme un « dimanche noir » pour l’économie suisse ? Ce travail va essayer de répondre à cette question