Quantifying Functional Reuse from Object Oriented Requirements Specifications

Software reuse is essential in improving efficiency and productivity in the software development process. This paper analyses reuse within requirements engineering phase by taking and adapting a standard functional size measurement method, COSMIC FFP. Our proposal attempts to quantify reusability from Object Oriented requirements specifications by identifying potential primitives with a high level of reusability and applying a reuse indicator. These requirements are specified using OO-Method, an automatic software production method based on transformation models. We illustrate the application of our proposal in a Car Rental real system

An infrared diagnostic for magnetism in hot stars

Magnetospheric observational proxies are used for indirect detection of magnetic fields in hot stars in the X-ray, UV, optical, and radio wavelength ranges. To determine the viability of infrared (IR) hydrogen recombination lines as a magnetic diagnostic for these stars, we have obtained low-resolution (R~1200), near-IR spectra of the known magnetic B2V stars HR 5907 and HR 7355, taken with the Ohio State Infrared Imager/Spectrometer (OSIRIS) attached to the 4.1m Southern Astrophysical Research (SOAR) Telescope. Both stars show definite variable emission features in IR hydrogen lines of the Brackett series, with similar properties as those found in optical spectra, including the derived location of the detected magnetospheric plasma. These features also have the added advantage of a lowered contribution of stellar flux at these wavelengths, making circumstellar material more easily detectable. IR diagnostics will be useful for the future study of magnetic hot stars, to detect and analyze lower-density environments, and to detect magnetic candidates in areas obscured from UV and optical observations, increasing the number of known magnetic stars to determine basic formation properties and investigate the origin of their magnetic fields.Comment: 4 pages, accepted for publication in A&

What kinds of innovations do we need in education?

Peer reviewe

Cactáceas útiles de los ecosistemas áridos en el sur del Perú

El sur del Perú, principalmente las regiones de Tacna y Moquegua se caracterizan por ser regiones áridas y semiáridas del desierto climático de Atacama, con una precipitación promedio mensual de 4 mm a 19 mm. A pesar de ello florecen ecosistemas bien adaptados a las condiciones de escasez del recurso hídrico. Entre los elementos biodiversos aparecen las cactáceas. El objetivo de este trabajo fue identificar las especies de cactáceas más utilizadas por los pobladores de la región y proponer programas de conservación.Universidad Nacional de La Plat

Cactáceas útiles de los ecosistemas áridos en el sur del Perú

El sur del Perú, principalmente las regiones de Tacna y Moquegua se caracterizan por ser regiones áridas y semiáridas del desierto climático de Atacama, con una precipitación promedio mensual de 4 mm a 19 mm. A pesar de ello florecen ecosistemas bien adaptados a las condiciones de escasez del recurso hídrico. Entre los elementos biodiversos aparecen las cactáceas. El objetivo de este trabajo fue identificar las especies de cactáceas más utilizadas por los pobladores de la región y proponer programas de conservación.Universidad Nacional de La Plat

Bacterias resistentes al arsénico en agua subterránea: aislamiento y caracterización bioquímica

Conferencia de la 20th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Education, Research and Leadership in Post-pandemic Engineering: Resilient, Inclusive and Sustainable Actions”. hybrid event, Boca Raton, Florida- USA, junio 18 - 22.El arsénico es un contaminante frecuente de agua, especialmente en zonas geográficas con presencia de volcanes. Este semi-metal es considerado tóxico para el ser humano por lo que su remoción del recurso hídrico es un constante desafío en la comunidad científica. El presente estudio pretende buscar bacterias capaces de resistir altas concentraciones de arsénico y eventualmente podrían ser útiles en la remoción de este contaminante. Se aisló tres bacterias capaces de tolerar 2mM d e arsénico y se realizó la caracterización morfológica y bioquímica. Además, mediante la secuenciación del gen 16S rRNA se determinó que pertenecen a los géneros Cupriavidus y Pseudomonas y se registraron en GenBank. Estas bacterias son potenciales agentes para remover arsénico en agua. Sin embargo, es necesario estudios posteriores que evalúen esta propiedad.Campus Arequip

Aislamiento e identificación de bacterias tolerantes a metamidofos de suelos agrícolas en Arequipa - Perú

Conferencia de la 20th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Education, Research and Leadership in Post-pandemic Engineering: Resilient, Inclusive and Sustainable Actions”. hybrid event, Boca Raton, Florida- USA, junio 18 - 22.El uso de pesticidas organofosforados en Arequipa se debe a su efectividad en el control plagas a pesar de las restricciones impuestas por las instituciones gubernamentales, su uso sigue siendo común y el impacto sobre los ecosistemas y la salud humana sigue siendo un problema ambiental importante. La persistencia de estos agroquímicos en suelos y agua, hace necesario el uso de nuevos métodos de degradación. En la presente investigación se aisló bacterias de suelos con antecedentes de contaminación con metamidofos, se cultivó las cepas extraídas d e muestras de suelo en un medio salino mineral contaminado con metamidofos (100 mg L-1) hasta su purificación, posteriormente se identificó las cepas aisladas a través de la observación de características culturales, pruebas bioquímicas y secuenciación molecular. Las bacterias identificadas, tolerantes a la presencia de metamidofos como única fuente de carbono, son: Priestia Megaterium (KU555935) y Bacilluslicheniformis (KU524076). Con la presente investigación se pretende contribuir al desarrollo de la biotecnología centrada al aislamiento e identificación de microorganismos con la finalidad brindar alternativas para la identificación de bacterias con potencial para degradar OP’s.Campus Arequip

Epidemiological and transmissibility analysis of influenza A(H1N1)v in a southern hemisphere setting: Peru

We present a preliminary analysis of 1,771 confirmed cases of influenza A(H1N1)v reported in Peru by 17 July including the frequency of the clinical characteristics, the spatial and age distribution of the cases and the estimate of the transmission potential. Age-specific frequency of cases was highest among school age children and young adults, with the lowest frequency of cases among seniors, a pattern that is consistent with reports from other countries. Estimates of the reproduction number lie in the range of 1.2 to 1.7, which is broadly consistent with previous estimates for this pandemic in other regions. Validation of these estimates will be possible as additional data become available

Climate change and crop diversity: farmers’ perceptions and adaptation on the Bolivian Altiplano

Crop diversity is central to traditional risk management practices on the Andean Altiplano and may find renewed importance in adapting to climate change. This study explored the role of crop diversity in farmers’ adaptation actions in eight Aymara communities on the northern Bolivian Altiplano. Using a combination of quantitative and qualitative methods, including multifactor analysis and a community resilience self-assessment, we investigated how farmers’ use of diversity in adaptation is related to their perceptions of crop and variety tolerances and other environmental, social, and economic factors. Few crops and varieties were perceived as tolerant to increasingly intense and unpredictable drought, frost, hail, and pest and disease outbreaks. Some local crops and varieties were perceived as vulnerable to emerging conditions (e.g. oca, papalisa, isaño), whereas bitter potatoes and wild relatives of quinoa and cañahua were perceived as highly stress tolerant and provide food in harsh periods. A total 19% of households surveyed (N = 193) had introduced new crops or varieties—often disease resistant or early maturing—as an adaptive action. Introduction of commercial crops was a common adaptation action, reflecting farmers’ response to warming temperatures and changing economic opportunities, but greater sensitivity of the introduced crops may cause maladaptation. Despite intensification of cropping systems, households continue to maintain a median four potato varieties with different tolerance traits, yet this risk management practice was not perceived as adaptation. Strengthening resilience will require a combination of actions, including maintaining and expanding crop portfolios and restoring soil and ecosystem health, using both traditional and innovative approaches

Obstacles to integrated pest management adoption in developing countries

Despite its theoretical prominence and sound principles, integrated pest management (IPM) continues to suffer from anemic adoption rates in developing countries. To shed light on the reasons, we surveyed the opinions of a large and diverse pool of IPM professionals and practitioners from 96 countries by using structured concept mapping. The first phase of this method elicited 413 open-ended responses on perceived obstacles to IPM. Analysis of responses revealed 51 unique statements on obstacles, the most frequent of which was “insufficient training and technical support to farmers.” Cluster analyses, based on participant opinions, grouped these unique statements into six themes: research weaknesses, outreach weaknesses, IPM weaknesses, farmer weaknesses, pesticide industry interference, and weak adoption incentives. Subsequently, 163 participants rated the obstacles expressed in the 51 unique statements according to importance and remediation difficulty. Respondents from developing countries and high-income countries rated the obstacles differently. As a group, developing-country respondents rated “IPM requires collective action within a farming community” as their top obstacle to IPM adoption. Respondents from high-income countries prioritized instead the “shortage of well-qualified IPM experts and extensionists.” Differential prioritization was also evident among developing-country regions, and when obstacle statements were grouped into themes. Results highlighted the need to improve the participation of stakeholders from developing countries in the IPM adoption debate, and also to situate the debate within specific regional contexts