1,358 research outputs found
Path Clustering: Grouping in a Efficient Way Complex Data Distributions
This work proposes an algorithm that uses paths based on tile segmentation to build complex clusters. After allocating data items (points) to geometric shapes in tile format, the complexity of our algorithm is related to the number of tiles instead of the number of points. The main novelty is the way our algorithm goes through the grids, saving time and providing good results. It does not demand any configuration parameters from users, making easier to use than other strategies. Besides, the algorithm does not create overlapping clusters, which simplifies the interpretation of results
Signal Transmission Across Tile Assemblies: 3D Static Tiles Simulate Active Self-Assembly by 2D Signal-Passing Tiles
The 2-Handed Assembly Model (2HAM) is a tile-based self-assembly model in
which, typically beginning from single tiles, arbitrarily large aggregations of
static tiles combine in pairs to form structures. The Signal-passing Tile
Assembly Model (STAM) is an extension of the 2HAM in which the tiles are
dynamically changing components which are able to alter their binding domains
as they bind together. For our first result, we demonstrate useful techniques
and transformations for converting an arbitrarily complex STAM tile set
into an STAM tile set where every tile has a constant, low amount of
complexity, in terms of the number and types of ``signals'' they can send, with
a trade off in scale factor.
Using these simplifications, we prove that for each temperature
there exists a 3D tile set in the 2HAM which is intrinsically universal for the
class of all 2D STAM systems at temperature (where the STAM does
not make use of the STAM's power of glue deactivation and assembly breaking, as
the tile components of the 2HAM are static and unable to change or break
bonds). This means that there is a single tile set in the 3D 2HAM which
can, for an arbitrarily complex STAM system , be configured with a
single input configuration which causes to exactly simulate at a scale
factor dependent upon . Furthermore, this simulation uses only two planes of
the third dimension. This implies that there exists a 3D tile set at
temperature in the 2HAM which is intrinsically universal for the class of
all 2D STAM systems at temperature . Moreover, we show that for each
temperature there exists an STAM tile set which is intrinsically
universal for the class of all 2D STAM systems at temperature ,
including the case where .Comment: A condensed version of this paper will appear in a special issue of
Natural Computing for papers from DNA 19. This full version contains proofs
not seen in the published versio
O Pronaf na ParaĂba: uma avaliação quantitativa com enfoque psicossocial.
bitstream/CPAC-2010/30245/1/bolpd-204.pd
Interdependent network reciprocity in evolutionary games
Besides the structure of interactions within networks, also the interactions between networks are of the outmost
importance. We therefore study the outcome of the public goods game on two interdependent networks that are
connected by means of a utility function, which determines how payoffs on both networks jointly influence the
success of players in each individual network. We show that an unbiased coupling allows the spontaneous
emergence of interdependent network reciprocity, which is capable to maintain healthy levels of public
cooperation even in extremely adverse conditions. The mechanism, however, requires simultaneous formation of
correlated cooperator clusters on both networks. If this does not emerge or if the coordination process is
disturbed, network reciprocity fails, resulting in the total collapse of cooperation. Network interdependence can
thus be exploited effectively to promote cooperation past the limits imposed by isolated networks, but only if the
coordination between the interdependent networks is not disturbe
Extracting actionable knowledge to increase business utility in sport services
The increase in retention of customer in gyms and health clubs is nowadays a challenge that requires concrete and personalized actions. Traditional data mining studies focused essentially on predictive analytics, neglecting the business domain. This work presents an actionable knowledge discovery system which uses the following pipeline (data collection, predictive model, loyalty actions). In the first step, it extracts and transforms existing real data from databases of the sports facilities. In a second step, predictive models are applied to identify user profiles more susceptible to dropout. Actionable rules are generated based on actionable attributes that should be avoided, in order to increase retention. Finally, in the third step, based on the previous actionable knowledge, experimental planning is carried out, with test and control groups, in order to find the best loyalty actions for customer retention. This document presents a simulation and the measure of the business utility of an actions sequence to avoid dropout.info:eu-repo/semantics/publishedVersio
Expressão de genes de referência para uso em reações de qPCR em genótipos de soja contrastantes para o conteúdo de ácido oléico cultivados sob diferentes temperaturas.
Can serious games help to mitigate climate change? Exploring their influence on Spanish and American teenagers’ attitudes
Es urgente y necesario reducir las emisiones de gases de efecto invernadero y mitigar el cambio climático, y esta lucha requiere un cambio en las actitudes de los adolescentes. En la bĂşsqueda de nuevos enfoques dirigidos a los jĂłvenes, los serious games en formato online parecen una prometedora herramienta de comunicaciĂłn y educaciĂłn. Basándonos en el juego 2020 Energy como estudio de caso, el principal objetivo de este artĂculo es examinar la influencia de dicho juego sobre las actitudes de adolescentes españoles y estadounidenses (N = 108), empleando un diseño pretest-posttest con una condiciĂłn experimental (jugar al juego) y una condiciĂłn de control (no jugar al juego). Los resultados muestran que no habĂa diferencias estadĂsticamente significativas despuĂ©s de jugar al juego, aunque una observaciĂłn más detallada de cada factor ofrece algunas consecuencias positivas.There is an urgent need to curb emissions and mitigate climate change, and this fight requires a change in teenagers’ attitudes. In search of new approaches targeting youth, online games are seen as a promising tool for communication and education. Using the serious game 2020 Energy as a case study, the main objective of this paper is to examine the influence of the game on Spanish and American teenagers’ attitudes (N = 108), employing a pretest-posttest design with an experimental condition (playing the game) and a control condition (not playing the game). Results show that there have not been statistically significant differences after playing the game, although when looking closer at each factor, some positive consequences can be found.HUM466 Acceso y evaluaciĂłn de la informaciĂłn cientĂfic
Wisdom of groups promotes cooperation in evolutionary social dilemmas
Whether or not to change strategy depends not only on the personal success of
each individual, but also on the success of others. Using this as motivation,
we study the evolution of cooperation in games that describe social dilemmas,
where the propensity to adopt a different strategy depends both on individual
fitness as well as on the strategies of neighbors. Regardless of whether the
evolutionary process is governed by pairwise or group interactions, we show
that plugging into the "wisdom of groups" strongly promotes cooperative
behavior. The more the wider knowledge is taken into account the more the
evolution of defectors is impaired. We explain this by revealing a dynamically
decelerated invasion process, by means of which interfaces separating different
domains remain smooth and defectors therefore become unable to efficiently
invade cooperators. This in turn invigorates spatial reciprocity and
establishes decentralized decision making as very beneficial for resolving
social dilemmas.Comment: 8 two-column pages, 7 figures; accepted for publication in Scientific
Report
Avaliação genética de vacas leiteiras mestiças em rebanhos leiteiros do Acre.
O uso de animais com baixa aptidĂŁo genĂ©tica tem sido apontado como um dos fatores limitantes para a baixa produtividade leiteira no Acre. O objetivo deste trabalho foi estimar parâmetros genĂ©ticos para a produção de leite aos 305 dias e análise de caracterĂsticas de conformação e intervalos de partos
CaracterĂsticas de conformação em bovinos leiteiros no Estado do Acre.
A mensuração das caracterĂsticas de conformação tem importância por estarem associadas Ă longevidade das vacas, auxiliando a seleção das melhores matrizes para a produção de leite. Ete trabalho teve como objetivo mensurar e avaliar caracterĂsticas de conformação/tipo e manejo em bovinos leiteiros pertencentes a rebanhos acreanos
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