One hand or two hands? 2D selection tasks with the leap motion device

In this paper, we present the results from an experiment designed to compare two selection gestures (hand grab and screen tap) for the Leap Motion controller in 2D pointing tasks. We used the ISO 9241-9 multi-directional tapping test for comparing the devices, and we analyze the results using standard throughput and error rate measures as well as additional accuracy measures. We also present the results from the ISO 9241-9 assessment of comfort questionnaire. To complement this analysis, the computer mouse was also evaluated in order to serve as a comparison. Results indicate that the hand grab gesture performs better than the screen tap

The Leap Motion Movement for 2D Pointing Tasks: Characterisation and Comparison to Other Devices

In this paper we present the results from an experiment designed to characterize the Leap Motion movement in 2D pointing tasks and compare it to a mouse and touchpad. We used the ISO 9241-9 multi-directional tapping test for comparing the devices, and we analyse the results using standard throughput and error rate measures as well as additional accuracy measures such as target re-entry, task axis crossing, movement direction change, orthogonal direction change, movement variability, movement offset, and movement error. We also present the results from the ISO9241-9 assessment of comfort questionnaire, and our observations from the participant’s postures when using the Leap Motion device. Results indicate that the Leap Motion performs poorly in these tasks when compared to a mouse or touchpad

Aplicação de algoritmos genéticos ao problema da geração de serviços de tripulações

Dissertação apresentada para obtenção do grau de Mestre em Engenharia Electrotécnica e de Computadores na Faculdade de Engenharia da Universidade do Porto, sob a orientação do Prof. Doutor João Bernardo de Sena Esteves Falcão e Cunha e do Prof. Doutor Jorge Manuel Pinho de Sous

A New approach to the bus driver sheduling problem using multiobjective genetic algorithms

Tese de mestrado. Ciências de Engenharia. Faculdade de Engenharia. Universidade do Porto. 200

The Leap Motion movement for 2D pointing tasks: Characterisation and comparison to other devices

<p>In this paper we present the results from an experiment designed to characterize the Leap Motion movement in 2D pointing tasks and compare it to a mouse and touchpad. We used the ISO 9241-9 multi-directional tapping test for comparing the devices, and we analyse the results using standard throughput and error rate measures as well as additional accuracy measures such as target re-entry, task axis crossing, movement direction change, orthogonal direction change, movement variability, movement offset, and movement error. We also present the results from the ISO 9241-9 assessment of comfort questionnaire, and our observations from the participants postures when using the Leap Motion device. Results indicate that the Leap Motion performs poorly in these tasks when compared to a mouse or touchpad.</p

VIII Congresso Estadual Paulista sobre Formação de Educadores

O tema proposto para discussão durante o VIII Congresso Estadual Paulista sobre a Formação de Educadores – Modos de ser Educador: Artes e Técnicas – Ciências e Políticas envolve a busca de integração entre as diferentes dimensões que compõem a formação do profissional da educação. O trabalho e o sentido da intervenção social desse profissional se constituem em objeto em torno do qual as análises e interpretações vão recolher os fundamentos de debate sobre cultura como totalidade, incluindo: Artes e Técnicas – Ciências e Políticas. A dinâmica que caracteriza a formação de educadores requer a interpretaçãodesses fundamentos para o constante redimensionamento e definição dos objetivos visando aperfeiçoar o papel do profissional educador na sociedade. Por meio de discussões entrediferentes setores ligados à educação é que podem ser avaliados, preservados ou transformados os móveis que norteiam a formação do educador dentro de contextos culturais/sociais específicos, nos diversos campos, artes, técnicas, ciências e políticas. A disponibilidade de um espaço como o VIII Congresso Estadual Paulista sobre a Formação de Educadores para que estudiosos do tema - Educação - se congreguem e debatam a produção de conhecimento sob diversos ângulos, insere e qualifica esse evento como um processo de contribuição para o aprofundamento de estudos na área educacional. Os Congressos Estaduais Paulistas sobre a Formação de Educadores (CEPFE) vêm acontecendo desde 1990 e têm dedicado ênfase especial à formação de profissionais da educação, nos níveis de ensino fundamental, médio e universitário. Tal conformação do Congresso procura extrapolar questões próprias do padrão formal, para a abordagem de formação do profissional da educação embasada na crítica constante, capaz de dinamizar processos e resultados. Essa pretensão ressalta a importância do envolvimento de diferentes áreas do saber numa discussão sobre significados da produção de conhecimento. Daí poderão provir os resultados esperados a partir das atividades programadas para o VIII Congresso dentre os quais está esse caderno de resumos que ora apresentamos.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Characterisation of microbial attack on archaeological bone

As part of an EU funded project to investigate the factors influencing bone preservation in the archaeological record, more than 250 bones from 41 archaeological sites in five countries spanning four climatic regions were studied for diagenetic alteration. Sites were selected to cover a range of environmental conditions and archaeological contexts. Microscopic and physical (mercury intrusion porosimetry) analyses of these bones revealed that the majority (68%) had suffered microbial attack. Furthermore, significant differences were found between animal and human bone in both the state of preservation and the type of microbial attack present. These differences in preservation might result from differences in early taphonomy of the bones. © 2003 Elsevier Science Ltd. All rights reserved

NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the Neotropics

Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, 10 anteaters, and 6 sloths. Our data set includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the southern United States, Mexico, and Caribbean countries at the northern portion of the Neotropics, to the austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n = 5,941), and Cyclopes sp. have the fewest (n = 240). The armadillo species with the most data is Dasypus novemcinctus (n = 11,588), and the fewest data are recorded for Calyptophractus retusus (n = 33). With regard to sloth species, Bradypus variegatus has the most records (n = 962), and Bradypus pygmaeus has the fewest (n = 12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other data sets of Neotropical Series that will become available very soon (i.e., Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans data set. Please cite this data paper when using its data in publications. We also request that researchers and teachers inform us of how they are using these data