This paper presents the contribution of our team at task 2 of SemEval 2013: Sentiment Analysis in Twitter. We submitted a constrained run for each of the two subtasks. In the Contextual Polarity Disambiguation subtask, we use a sentiment lexicon approach combined with polarity shift detection and tree kernel based classifiers. In the Message Polarity Classification subtask, we focus on the infl...

We describe a prototype 73 gram, 21 cm diameter micro quadrotor with onboard attitude estimation and control that operates autonomously with an external localization system. We argue that the reduction in size leads to agility and the ability to operate in tight formations and provide experimental arguments in support of this claim. The robot is shown to be capable of 1850◦/sec roll and pitch, ...

There are various ways to impose a potential variation in time, and subsequently a series of voltammetric methods. Cyclic voltammetry relies on linearly scanning the potential in time, observing a triangular waveform variation [1-3]. Differential pulse voltammetry is based on two samplings of the current intensity for each potential pulse: one measurement before applying the pulse, and the seco...

The volvocine algae provide an unrivalled opportunity to explore details of an evolutionary pathway leading from a unicellular ancestor to multicellular organisms with a division of labor between different cell types. Members of this monophyletic group of green flagellates range in complexity from unicellular Chlamydomonas through a series of extant organisms of intermediate size and complexity...

We explore the nuclear responses at intermediate energies, particularly in the spin longitudinal σ · q and spin transverse σ × q isovector channels, within the continuum random phase approximation framework. We also employ an extension of the standard random phase approximation to account for the spreading width of the single particle states through the inclusion of a complex and energy-depende...

A combination of ray and mode analysis is used to derive a new expression for the impulse response of a step-index fiber including a gap. This makes it possible to investigate the validity of the rayand bound-mode model. It is shown that leaky modes have little influence on the bandwidth of practical communication tibers. End-face separation in a connection only attenuates the signal and has ne...

ISO10303 STEP (STandard for the Exchange of Product model data) released a suite of application protocols covering the most important product life-cycle activities. The maturity in the development and usage of these standard models was conducted to the redesign of the classical architecture of STEP application protocols to a more agile architecture in order to better fit the emergent technologi...

The goal of this study is to observe the effect of instruction deliverance method in the construction of mental model. A good mental model can help the user’s learnability process. There were two methods tested in this study: a step-by-step instruction (SS) and a complete set of whole-steps instructions (WS) to finish a given task. The SS group performed better on the learning process, however ...

BACKGROUND Providing large-scale descriptive data of objectively measured physical activity in youth is informative for practitioners, epidemiologists, and researchers. The purpose of this study was to present the pedometer-determined physical activity among Japanese youth using the Tokyo Metropolitan Survey of Physical Fitness, Physical Activity and Lifestyle 2011. METHODS This study used a ...

Abstract This paper delivers an analysis of the least-squares estimation of the Laguerre coefficients of a linear discrete-time system from step response data. The original contribution consists in an explicit formula for the bias error on the estimated coefficients due to the under-modelling of the system. The formula, jointly with some a-priori information on the neglected dynamics, can be us...