Database Preservation Toolkit: a flexible tool to normalize and give access to databases

Digital preservation is emerging as an area of work and research that tries to provide answers that will ensure a continued and long-term access to information stored digitally. IT Platforms are constantly changing and evolving and nothing can guarantee the continuity of access to digital artifacts in their absence. This paper focuses on a specic family of digital objects: Relational Databases; they are the most frequent type of databases used by organizations worldwide. Database Preservation Toolkit enables the preservation of relational databases holding the structure and content of the the database in a preservation format in order to provide access to the database information in a long term period. If in one hand there is a need to migrate databases to newer ones that appear with technological evolution, on the other hand there is also the need to preserve the information they hold for a long time period, due to legal duties but also due to archival issues. That being said, that information must be available no matter the database management system where the information came from. In this area, solutions are still scarce. Main products for relational database preservation include CHRONOS and SIARD. The rst one is, in most of the cases, unreachable due to the associated costs. The second one is not really a product but a preservation format. The main idea behind this work was to explore the main features and limitations of the existing products in order to improve 'db-preservation-toolkit' (http://keeps.github.io/ db-preservation-toolkit/), an extracted component from the RODA project (http://www.roda-community.org). Therefore, 'db-preservation-toolkit' was improved with respect to performance and also with new features addiction in order to support more database management systems, address some missing features of the other products, support of a new preservation format (SIARD) and provide an interface where it is possible to access and search the information of the archived databases.This work is supported by the European Commission under FP7 CIP PSP grant agreement number 620998 - E-ARK

Characterising the agriculture 4.0 landscape - Emerging trends, challenges and opportunities

ReviewInvestment in technological research is imperative to stimulate the development of sustainable solutions for the agricultural sector. Advances in Internet of Things, sensors and sensor networks, robotics, artificial intelligence, big data, cloud computing, etc. foster the transition towards the Agriculture 4.0 era. This fourth revolution is currently seen as a possible solution for improving agricultural growth, ensuring the future needs of the global population in a fair, resilient and sustainable way. In this context, this article aims at characterising the current Agriculture 4.0 landscape. Emerging trends were compiled using a semi-automated process by analysing relevant scientific publications published in the past ten years. Subsequently, a literature review focusing these trends was conducted, with a particular emphasis on their applications in real environments. From the results of the study, some challenges are discussed, as well as opportunities for future research. Finally, a high-level cloud-based IoT architecture is presented, serving as foundation for designing future smart agricultural systems. It is expected that this work will positively impact the research around Agriculture 4.0 systems, providing a clear characterisation of the concept along with guidelines to assist the actors in a successful transition towards the digitalisation of the sectorinfo:eu-repo/semantics/publishedVersio

PT-CRIS: Um miradouro sobre o universo científico nacional

Reconhecida a importância da ciência, tecnologia, inovação e do conhecimento gerado pela investigação científica, são inúmeros os sistemas de informação criados para dar resposta a necessidades de gestão e disseminação de informação em diferentes domínios. Contudo, a dispersão de informação em vários sistemas, a não adoção de normas/práticas de referência e consequentemente a replicação de informação criam dificuldades às várias entidades que gerem ou consultam informação sobre ciência e respetivos indicadores na capacidade de gestão, execução, avaliação e tomada de decisão relativa a processos de investigação. Surge assim a necessidade de criar um sistema que ofereça uma visão global do universo de ciência e tecnologia, agregando e relacionando informação de suporte à atividade científica desenvolvida em Portugal, i.e., informação sobre investigadores, organizações, programas de financiamento, projetos, resultados de investigação, instalações, equipamentos e serviços. O sistema, ao relacionar e contextualizar a informação científica atualmente dispersa em vários sistemas, permitirá transformar informação em conhecimento, aumentar a visibilidade e difusão da ciência e simplificar processos na gestão da produção científica nacional.Comunicação patrocinada pela KEEP SOLUTION

Variability of Root System Size and Distribution among Coffea canephora Genotypes

This work aimed to evaluate the variability in the distribution of the root system among genotypes of C. canephora cv. Conilon and indicate management strategies for a more efficient mineral fertilization. Root distribution was evaluated in six genotypes. The experimental design was in randomized blocks with three replications. Soil monoliths measuring about 27 cm3 were collected at six different soil depths, at three row distances and nine distances of inter-row planting. The collections were carried out in one plant of each repetition. In total, 1296 samples were evaluated. The roots were washed, digitized and processed to quantify length density, volume, surface area and diameter. The distribution of the root system was characterized using semivariograms. It was observed that the highest concentration of roots occurred in the distances close to the irrigation drippers. There was variation in the distribution of the root system among the genotypes. However, in general, the root system is concentrated at a depth of 0 to 20 cm in the soil, at distances up to 50 cm in the planting row and up to 60 cm in inter-rows. Therefore, the greatest efficiency in nutritional management can be achieved by applying fertilizers within a radius of 50 cm around the plantinfo:eu-repo/semantics/publishedVersio

Composto orgânico e biofertilizante supermagro na formação de cafeeiros

To evaluate fertilization with organic compost associated to supermagro biofertilizer leaf application on growth and development of coffee (Coffea arabica L. cultivar Topázio MG-1190), a greenhouse study carried out at the Federal University of Lavras, from March 15 to October 4 of 2003. A randomized complete block design in factorial arrangement (5 x 5 + 3 adictional factors) was used with four replications, using one plant per plot. First factor used was organic compound rate/pot (110, 330, 550, 770 and 990 g). The second factor was supermagro applied monthly to leaf at 0%, 3%, 6%, 12% and 24% concentration. Additional treatments were organic fertilizer, organic + mineral and mineral fertilizer soil application. Characteristics evaluated were plant stalk node number, leaf area (cm2), leaf number, leaf dry weight, aerial part plant dry weight, total plant dry weight. Significant interaction occurred with numbers of lateral branch, leaf, leaf dry weight, aerial part dry matter and total plant dry weight. The best plant development was from 702 to 770g rating of the compost/pot plus supermagro application from 14.6% to 16.2% rating.Com o objetivo de avaliar a adubação constituída de composto orgânico associado à aplicação foliar do biofertilizante "supermagro" no desenvolvimento e crescimento de cafeeiros da cultivar Topázio MG-1190 (Coffea arabica L.), foi instalado um experimento em casa-de-vegetação na Universidade Federal de Lavras, no período de 15 de março a 4 de outubro de 2003. O delineamento experimental foi em blocos casualizados, com quatro repetições, e os tratamentos dispostos em esquema fatorial 5 x 5 + 3, sendo a parcela constituída por um vaso com uma planta. Os tratamentos constaram de composto orgânico nas doses de 110, 330, 550, 770 e 990 g vaso-1, associados ao biofertilizante pulverizado a 0%, 3%, 6%, 12% e 24%. Os tratamentos adicionais consistiram de adubação orgânica, orgânica mais mineral e apenas mineral, fornecidos ao substrato. Avaliaram-se o número de nós do ramo ortotrópico, número de ramos plagiotrópicos, número de nós dos ramos plagiotrópicos, área foliar, número de folhas e massa seca das folhas, da parte aérea e total. O melhor desenvolvimento do cafeeiro foi promovido pelo composto entre 702 a 770 g vaso-1, associado ao biofertilizante nas concentrações de 14,6% a 16,2%

Performance of common bean families after different generations under natural selection

ABSTRACT: A segregant bulk population derived from a single cross between the Carioca MG cultivar and the ESAL 686 line was used to investigate whether the action of natural selection in the direction required by the breeders and the delaying line extraction would increase the chance of obtaining families with greater grain yield. The populations were advanced from F2 to F24 and obtained families F2, F8 and F24 from the plants. These families and their parents were assessed for grain yield (kg/ha) in Lavras-MG in three sowing seasons (July 2001, November 2001 and March 2002) in an 18 x 18 lattice design with two replications in the first sowing and three in the other two. The largest mean yield, regardless of sowing season, was among the families derived from the F24 plants. The frequency of superior families increased when line extraction was delayed to more advanced generations

DINÂMICA INTERGERACIONAL DE EDUCAÇÃO E CORRESIDÊNCIA ENTRE PAIS E FILHOS ADULTOS NO BRASIL

This article aims to analyze the intergenerational mobility of education in Brazil considering the effects of coresidence decision between adult children and parents. The empirical analyses are based on complex survey data of Pesquisa Nacional por Amostra de Domicílio (PNAD) of 1996 and a model of joint decision of coresidence and accumulation of human capital with self-selection of children according to their family position. The results suggest that the coefficients of educational persistence cannot be generalized due to sample selection bias. In addition, evidence of greater mobility was found for the group of coresident children with parents in adult life compared to children who are heads or spouses in the households surveyed.Este artigo busca analisar a mobilidade intergeracional de educação no Brasil considerando sua possível inter-relação com a decisão de corresidência entre filhos adultos e pais no mesmo domicílio. Foram usados os dados da Pesquisa Nacional por Amostra de Domicílio (PNAD) de 1996 incorporando sua amostragem complexa e um modelo empírico de decisão conjunta de corresidência e acumulação de capital humano com autosseleção de filhos de acordo com sua posição familiar. Os resultados sugerem que os coeficientes de persistência educacional não podem ser generalizados devido ao viés de seleção amostral. Ademais, foram encontradas evidências de uma maior mobilidade para o grupo de filhos corresidentes com os pais na vida adulta em relação a filhos que são chefes ou cônjuges nos domicílios pesquisados