Advancing Research on Virtual Collaboration

Aunque los entornos virtuales no eran nuevos para algunas organizaciones, cuando llegó la pandemia de COVID-19, casi todas las industrias del mundo comenzaron a emplearlos. Dado que muchas organizaciones y empleados trabajarán de forma remota de forma permanente (o al menos en cierta medida) en el futuro, uno de los desafíos más importantes que enfrentarán las organizaciones es facilitar el desempeño individual y del equipo en entornos virtuales. Los entornos virtuales pueden permitir a las organizaciones maximizar su capital humano y mejorar su conocimiento, recursos, colaboración y creatividad para satisfacer las demandas de sus partes interesadas. Sin embargo, cuando los miembros del equipo utilizan las comunicaciones mediadas por tecnología, se enfrentan a desafíos adicionales que afectan la colaboración y el rendimiento. Por lo tanto, es fundamental comprender los aspectos que contribuyen a la colaboración individual y en equipo en entornos virtuales. El objetivo principal de esta tesis es, por lo tanto, avanzar en la investigación sobre la colaboración virtual. Más específicamente, esta tesis aborda la siguiente pregunta de investigación: ¿Qué factores promueven una colaboración efectiva en un contexto virtual? Para abordar esta pregunta, esta tesis se divide en seis capítulos, de los cuales la parte principal es un compendio de tres ensayos (Capítulos 2, 3 y 4). El primer capítulo de la tesis es la introducción general. El segundo capítulo se centra en factores a nivel individual que permiten la efectividad de la colaboración virtual (género y juicio situacional). El tercer capítulo se centra en factores a nivel de equipo que promueven la eficacia de la colaboración virtual (comportamientos de comunicación virtual del equipo e intercambio de información del equipo). El cuarto capítulo se centra en los factores de nivel diádico que promueven la colaboración virtual efectiva (expectativas interpersonales y perdón por tiempos de respuesta prolongados). Finalmente, el quinto capítulo presenta las conclusiones generales, limitaciones y futuras líneas de investigación. Esta tesis contribuye a la literatura sobre colaboración en entornos virtuales al examinar fenómenos contemporáneos en diferentes niveles de análisis (p. ej., género, equipos de estudiantes cara a cara tradicionales y efectos de falta de respuesta) desde varias perspectivas teóricas y metodológicas. En general, esta tesis proporciona información útil para las personas y los equipos que trabajan en entornos virtuales.Encara que els entorns virtuals no eren nous per a algunes organitzacions, quan va arribar la pandèmia de COVID-19, gairebé totes les indústries del món van començar a fer-los servir. Atès que moltes organitzacions i empleats treballaran de manera remota de manera permanent (o almenys en certa mesura) en el futur, un dels desafiaments més importants que enfrontaran les organitzacions és facilitar l'exercici individual i de l'equip en entorns virtuals. Els entorns virtuals poden permetre a les organitzacions maximitzar el seu capital humà i millorar-ne el coneixement, els recursos, la col·laboració i la creativitat per satisfer les demandes de les seves parts interessades. Tot i això, quan els membres de l'equip utilitzen les comunicacions à través de mitjans tecnològics, s'enfronten a desafiaments addicionals que afecten la col·laboració i el rendiment. Per tant, és fonamental comprendre els aspectes que contribueixen a la col·laboració individual i en equip en entorns virtuals. L'objectiu principal d'aquesta tesi és, doncs, avançar en la investigació sobre la col·laboració virtual. Més específicament, aquesta tesi aborda la pregunta de recerca següent: Quins factors promouen una col·laboració efectiva en un context virtual? Per abordar aquesta pregunta, aquesta tesi es divideix en sis capítols, dels quals la part principal és un compendi de tres assaigs (Capítols 2, 3 i 4). El primer capítol de la tesi és la introducció general. El segon capítol se centra en factors individuals que permeten l'efectivitat de la col·laboració virtual (gènere i judici situacional). El tercer capítol se centra en factors d'equip que promouen l'eficàcia de la col·laboració virtual (comportaments de comunicació virtual de l'equip i intercanvi d'informació de l'equip). El quart capítol se centra en els factors de nivell diàdic que promouen la col·laboració virtual efectiva (expectatives interpersonals i perdó per temps de resposta perllongats). Finalment, el cinquè capítol presenta les conclusions generals, les limitacions i les futures línies de recerca. Aquesta tesi contribueix a la literatura sobre col·laboració en entorns virtuals en examinar fenòmens contemporanis a diferents nivells d'anàlisi (p. ex., gènere, equips d'estudiants cara a cara tradicionals i efectes de manca de resposta) des de diverses perspectives teòriques i metodològiques. En general, aquesta tesi proporciona informació útil per a persones i equips que treballen en entorns virtuals.Although virtual environments were not new to some organizations, when the COVID-19 pandemic hit, almost every industry on the globe began employing them. Given that many organizations and employees will work remotely permanently (or at least to some extent) in the future, one of the most significant challenges organizations will face is facilitating individual and team performance in virtual environments. Virtual environments may enable organizations to maximize their human capital and enhance their knowledge, resources, collaboration, and creativity to meet their stakeholder’s demands. Nevertheless, when team members rely on technology-mediated communications, they encounter additional challenges that impact collaboration and performance. Thus, it is critical to understand the aspects that contribute to individual and team collaboration in virtual environments. The main purpose of this thesis is thus to advance research on virtual collaboration. More specifically, this thesis addresses the following overarching research question: What factors promote effective collaboration in a virtual context? To address this question, this thesis is divided into six chapters, of which the main part is a compendium of three essays (Chapters 2, 3, and 4). The first chapter of the thesis is the general introduction. The second chapter focuses on individual-level factors that enable the effectiveness of virtual collaboration (gender and situational judgment). The third chapter focuses on team-level factors that promote virtual collaboration effectiveness (team virtual communication behaviors and team information sharing). The fourth chapter focuses on dyadic-level factors that promote effective virtual collaboration (interpersonal expectations and forgiveness for lengthy response times). Finally, the fifth chapter presents the general conclusions, limitations, and future research directions. This thesis contributes to the literature on collaboration in virtual environments by examining understudied contemporary phenomena at different levels of analysis (e.g., gender, traditional face-to-face student teams, and unresponsiveness effects) from various theoretical and methodological perspectives. Overall, this thesis provides insights helpful to individuals and teams working in virtual environments

Nonlinear trend stationary of real exchange rates: The case of the Mediterranean countries

The aim of this article is to provide additional evidence on the fulfilment of the Purchasing Power Parity hypothesis in the so-called Mediterranean countries. In order to test for the empirical validity of such hypothesis, we have applied two types of unit root tests. The first group is due to Bierens (1997) who generalizes the alternative hypothesis to nonlinear trend stationarity and, the second is the Leybourne, Newbold and Vougas (1998) approach that uses a nonlinear specification for the intercept and slope in order to detrend the series. The results suggest that the evidence in favour of the Purchasing Power Parity hypothesis increases when we allow for nonlinear alternatives.purchasing power parity, real exchange rate, unit roots, structural change, nonlinearity

The relay network of Geobacter biofilms

While actual models explaining electron conduction in electricity producing biofilms have evolved separately to apparent irreconcilable conceptual positions, finding cytochrome complexes in the external matrix of Geobacter biofilms supports the proposal of a new functional model, that takes fundamental elements from confronting theories. In this model electrons expelled by cells are conducted to the collecting electrode along a network of supramolecular cytochrome arrangements interconnected by semiconducting pilus fibres that provide equipotential conditions within physically distant points. This arrangement resembles, from our point of view, a relay network for Geobacter biofilm, which allows a concerted physiological response of the entire population to any local redox change.Fil: Ordoñez, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Schrott, Germán David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Massazza, Diego Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Busalmen, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentin

The Virtual Health Sciences Library of the Balearic Islands: A regional project for libraries cooperation.

Virtual Health Sciences Library of the Balearic Islands (Bibliosalut) is a regional project carried out in collaboration with the Regional Ministry of Health and Consumer Protection and the Health Service of the Balearic Islands (Ib-salut), through the Balearic Islands Biomedical Documentation Service. The Virtual Library Mission is to facilitate the most important scientific information to the public health professionals of the Balearic Islands, by using the new information and communication technologies, in order to contribute to the improvement of medical care quality, teaching, research and health managemen

Antimicrobial activity of nine extracts of sechium edule (Jacq) swartz

The antimicrobial properties of Sechium edule (Jacq) Swartz alcoholic extracts obtained according to the Farmacopea Argentina (6th edn) were tested against bacteria of clinical relevance as nosocomial pathogens. To evaluate antibacterial activity, the disc diffusion assay was carried out with several gram-positive bacteria (Enterococcus faecalis, Staphylococcus aureus, coagulase-negative staphylococci, Streptococcus pyogenes, Streptococcus agalactiae, Staphylococcus aureus ATCC 29213, Enterococcus faecalis ATCC 29212). This assay was suitable for the screening of a large number of extracts at one time. All ethanolic extracts showed activity against gram-positive bacteria. Minimal inhibitory concentration (MIC) values were determined with a microdilution assay. The highest activity was obtained with the 80% aqueous-ethanolic leaf extract (MIC values of 4.16/8.32 mg/ml against staphylococci and enterococci) and with the 96% ethanolic seed extract (MIC values of 8.32/16.64 mg/ml and /8.32 mg/ml against staphylococci and enterococci, respectively). The results indicate that both fluid extract and tincture have very good antimicrobial efficacy against all strains of multiresistant staphylococci and enterococci. In this study the minimal bactericidal concentration (MBC) values were identical to the MIC values or twofold higher than the corresponding MIC. This may indicate a bactericidal effect. Stored extracts have similar anti-staphylococcal and anti-enterococcal activity to recently obtained extracts. The results obtained might be considered sufficient to warrant further studies aimed at isolation and identification of the active principle.Fil: Ordoñez, Alicia Lucia. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; ArgentinaFil: Gómez, José D.. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; ArgentinaFil: Cudmani, Norma Mercedes. Gobierno de la Provincia de Tucumán. Ministerio de Salud. Sistema Provincial de Salud. Hospital de Clínicas "Dr. Nicolás Avellaneda"; Argentina. Gobierno de la Provincia de Tucumán. Ministerio de Salud. Departamento Bioquímico; ArgentinaFil: Vattuone, Marta Amelia. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Estudios Vegetales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Isla, Maria Ines. Universidad Nacional de Tucumán. Instituto de Bioprospección y Fisiología Vegetal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Bioprospección y Fisiología Vegetal; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Estudios Vegetales; Argentin

Cuerpos en trance. Paisaje, transición y desaparición en Colombia

In Colombia, disappearance of people has taken place in a complex ecology of human and non-human, undone, and waste. A landscape in which hidden, buried, and poured bodies circulate in rivers, dumps, escombreras or rubble zones, surplus areas, and particularly in cemeteries, shaping hybrid forms of life and meaning between death. Here, I approach disappearance as a latent phenomenon in the landscape, which, like bodies and identities -of those who are disappeared-, is under violent, continuous, and, in some cases, irreversible transformations. A spatiality in which symbolic charges and embedded materials - those that enable processes of resistance, politicization, and the creation of other forms of the future - are at risk of being radically transformed and disappearing. Thus, this article responds to an ad hoc methodological approach in which through research-creation, and participatory observation, I investigate into different forms of relationship and meaning that disappearance configured among subjects, bodies, their paths, and the landscape.; En Colombia, la desaparición de personas ha discurrido en una compleja ecología de lo humano y lo no-humano, lo deshecho, y los desechos. Un paisaje en la que circulan cuerpos ocultos, enterrados y vertidos en ríos, botaderos, escombreras, zonas de excedentes, y particularmente en cementerios, configurando formas híbridas de vida y sentido entre la muerte. Aquí, abordo la desaparición desde su comprensión como un fenómeno latente en el paisaje, el cual, como los cuerpos e identidades de quienes son desaparecidos, es sujeto de una transformación violenta, continua, y en algunos casos, irreversible. Una espacialidad en la que las cargas simbólicas y materiales embebidas –aquellas que posibilitan procesos de resistencia, politización, y la creación de otras formas de futuro– se encuentran en riesgo de ser radicalmente transformadas y de desaparecer. De este modo, este artículo responde a una aproximación metodológica ad hoc en la que a través de la investigación-creación, y la observación participativa, indago en las diferentes formas de relación y sentido que la desaparición configura entre sujetos, cuerpos, sus recorridos, y el paisaje

Healthy Universities: Concepts, Dimensions and Approaches for the Construction of Healthy University Environments

The purpose of this study was to analyse the health paradigms that prevail in the actions of the current university world by specifying the dimensions to guide interventions within the framework of Healthy Universities and by proposing a comprehensive and integrated vision of health for the construction of these interventions. Thus, a systematic review of the main available scientific databases based on an interpretative perspective was carried out. Forty-four articles, published between 2007 and 2018 and related to university environments or some of their stakeholders that included the addressed dimensions of Health: physical, mental, social, environmental and spiritual were selected. The results show that this field of study is growing, most studies point to the physical and mental dimension of the students. Few studies were found in the other addressed dimensions for teachers, employees and pensioners. In conclusion, the relevance of the five dimensions was identified; although the least studied were environmental and spiritual, they have great potential for the development of interventions. Healthy universities must articulate the five dimensions with the stakeholders that make up their communities from the holistic and salutogenic approach to overcome the bio-medical trend of current interventions

Uranium and phosphate behaviour in the vadose zone of a fertilised corn field

Phosphate fertilizers contain approximately 200 mg.kg–1 of uranium. The uranium and phosphate can move through the vadose zone and reach groundwater. Therefore, the knowledge of the ways in which these two elements are distributed, their partition relationships and their mobility behavior is of great interest. In order to study the latter, suction cup samplers, intended to collect soil water at different depths, were installed in an experimental site in a high plain of Mexico, where corn is cultivated and phosphate fertilizers are systematically applied. It was observed that the vadose zone contains high concentrations of uranium (1–50 mg.k –1) and phosphates (22–33 mg.kg–1), which decrease at greater depths. Uranium concentration in the soil water varies between 10 and 3 mg.l–1 and phosphates between 1 and 0.3 mg.l–1. Their evolution throughout the profile of the vadose zone is determined by the decrease in concentrations, due to the physico-chemical processes involved

Extreme-halophiles: their role in the arsenic biogeochemical cycle

Biofilms, mats and microbialites dwell under extreme environmental conditions (high salinity, extreme aridity, pH and arsenic concentration) in the Argentinean Puna and the Atacama Desert. Microbial communities inhabiting those ecosystems are poorly known. Arsenic metabolism is proposed to be an ancient mechanism in microbial life. Besides, some bacteria and archaea are not only able to use detoxification processes to grow under high arsenic concentration, but also, some of them are able to exploit arsenic as a bioenergetic substrate in either anaerobic arsenate respiration or chemolithotrophic growth on arsenite. Only four aioAB coding for arsenite oxidase and two arrA coding for arsenate reductase sequences from haloarchaea were previously deposited in the NCBI Database, but have not been reported in the literature. The arrA arsenate reductases are reliable indicators of anaerobic As (V) respiration and catalyze the electron transfer to the As (V) terminal acceptor in dissimilatory arsenatereducing prokaryotes (DARPs). In this work, we are presenting our first steps in the study of the arsenic biogeochemical cycle in these ecosystems. Thus, the aim of this study was to isolate and to study the arsenic metabolism genes of the isolated extreme halophile microorganisms as well as to test the growth in minimal medium using different carbon sources. Mats and microbialites samples were taken from the water’s edge of Laguna Tebenquiche, Laguna Brava (Salar de Atacama, Chile) during December 2012 and from gaylusite crystals (Laguna Diamante) in August 2014. Samples were enriched and plated in WS medium supplemented with arsenic (AsIII 0.5mM and AsV 20mM). Arsenite oxidase (aioB) and Arsenate reductase (arrA) primers specific for haloarchaea were designed using PrimerProspector software. Selected primers were aioB-1190F (5’-GCTCMTSACCGGCAGCGTCG-3’), aioB-1507R (5’-YGATCTCGTCGATGTCGGCG-3’), arrA-417F (5’CCCGAGTTCGAGCCSATCTC-3’) and arrA-614R (5’GCRCAGATCGMGCTGTGGGA-3’). In order to identify the isolates we used Archaea-specific primers for 16S rDNA gene amplification: 344F (5´- ACG GGG YGC AGC AGG CGC GA-3´) and 915R (5´- GTG CTC CCC CGC CAA TTC CT -3´). Fragments of 577 bp, 317pb and 197pb were obtained from 16S rDNA, aioB and arrA genes respectively. Universal primers 27F and 1492R were used to amplify 16S rDNA in bacterial isolates. 25 isolates belonging to Archaea and Bacteria Domain were obtained; they are related to the Phylum Euryarchaeota, Firmicutes and Proteobacteria. AioB and arrA genes were found in most of the isolates and DNA from the samples (mats, microbialites and biofilm). The best carbon source tested was pyruvate and acetate, being pyruvate better in all cases. Promising results were obtained in the search of organisms able to use arsenic in their bioenergetic metabolism. More studies are underway to try to better understand these very interesting systems.Fil: Rasuk, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Ordoñez, Omar Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Soria, Mariana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaXI Congreso Argentino de Microbiología GeneralCordobaArgentinaSociedad Argentina de Microbiología Genera

The Clean Development Mechanism, Contributions to the Conservation of Ecosystems and Regional Development

Resumen El Mecanismo de Desarrollo Limpio (MDL) es uno de los acuerdos suscritos en el Protocolo de Kyoto, desarrollado para lograr los objetivos de la Convención Marco de las Naciones Unidas sobre el Cambio Climático (CMNUCC) y ayudar a los países industrializados a alcanzar sus compromisos de mitigación de Gases Efecto Invernadero. El MDL involucra a países en desarrollo, contribuye con la mitigación del cambio climático, la inversión en diferentes sectores económicos, y la transferencia de tecnologías limpias, apoyando el desarrollo sostenible de las regiones. En este sentido, el artículo recoge temas relacionados con este mecanismo y su papel en la conservación de ecosistemas, su asociación con la sostenibilidad y su aplicación e implementación en Colombia. Abstract The Clean Development Mechanism (CDM) is one of the agreements in the Kyoto Protocol, developed to achieve the objectives of the Convention United Nations Framework on Climate Change (UNFCCC) and help industrialized countries meet their commitments to Mitigation of Greenhouse Gases. The CDM involves developing countries, contributes to the mitigation of climate change, the investment in different economic sectors, and the transfer of clean technologies, supporting sustainable development of regions. In this sense, the article takes issues related to this mechanism and its role in the conservation of ecosystems, their association with sustainability and their application and implementation in Colombia