Search results for "meme"

Pleistocene paleoenvironmental reconstructions and mammalian evolution in South-East Asia: focus on fossil faunas from Thailand.

2006

16 pages; International audience; Mammalian faunal studies have provided various clues for a better reconstruction of hominid Quaternary paleoenvironments. Inthis work, two methods were used: (1) the cenogram method, based on a graphical representation of the mammalian communitystructure, and (2) the species richness of murine rodents to estimate climatic parameters. These methods were applied to Middle andLate Pleistocene mammalian faunas of South-East Asia, from South China to Indonesia. Special emphasis was laid on a fauna fromnorth-east Thailand dated back to approximately 170,000 years (i.e. a glacial period). This Thai fauna seems characteristic of aslightly open forested environment …

Historical biogeography of Melastomataceae: the roles of Tertiary migration and long-distance dispersal

2001

Melastomataceae and Memecylaceae are pantropically distributed sister groups for which an ndhF gene phylogeny for 91 species in 59 genera is here linked with Eurasian and North American fossils in a molecular clock approach to biogeographical reconstruction. Nine species from the eight next-closest families are used to root phylogenetic trees obtained under maximum likelihood criteria. Melastomataceae comprise ∼3000 species in the neotropics, ∼1000 in tropical Asia, 240 in Africa, and 225 in Madagascar in 150-166 genera, and the taxa sampled come from throughout this geographic range. Based on fossils, ranges of closest relatives, tree topology, and calibrated molecular divergences, Mel…

An Adaptive Global-Local Memetic Algorithm to Discover Resources in P2P Networks

2007

This paper proposes a neural network based approach for solving the resource discovery problem in Peer to Peer (P2P) networks and an Adaptive Global Local Memetic Algorithm (AGLMA) for performing the training of the neural network. This training is very challenging due to the large number of weights and noise caused by the dynamic neural network testing. The AGLMA is a memetic algorithm consisting of an evolutionary framework which adaptively employs two local searchers having different exploration logic and pivot rules. Furthermore, the AGLMA makes an adaptive noise compensation by means of explicit averaging on the fitness values and a dynamic population sizing which aims to follow the ne…

A Memetic-Neural Approach to Discover Resources in P2P Networks

2008

This chapter proposes a neural network based approach for solving the resource discovery problem in Peer to Peer (P2P) networks and an Adaptive Global Local Memetic Algorithm (AGLMA) for performing in training of the neural network. The neural network, which is a multi-layer perceptron neural network, allows the P2P nodes to efficiently locate resources desired by the user. The necessity of testing the network in various working conditions, aiming to obtain a robust neural network, introduces noise in the objective function. The AGLMA is a memetic algorithm which employs two local search algorithms adaptively activated by an evolutionary framework. These local searchers, having different fe…

Transmission patterns in the production of Bronze Age solid- hilted swords

2023

Bronze Age swords with a bronze hilt were a highly specialised production. Casting hilts and blades and fixing them to each other require lots of precision and very specific skills. We hardly know anything about the production organisation as moulds are extremely rare, preventing us from locating workshops. However, studying swords themselves using X-ray imaging techniques allows us to reconstruct a part of the chaîne opératoire and gain insight into some aspects of the production processes. We identify three periods in the production of solid-hilted swords at the European scale:1. Experimental phase (1800-1450 BC): small-scaled productions by multiple workshops experimenting various ways o…

L’épée, arme et symbole. Le point de vue technique sur les fonctions des épées à poignée métallique de l’âge du Bronze

2018

The sword, which was invented during Bronze Age, is certainly the ultimate weapon, associated to war and warriors, designed to fight during combats. However, because of its technical complexity, its ostentatious aspect, especially when it is equipped with a bronze hilt, or its strong individualization for example through ornaments, swords can also be considered as symbols. This symbol can be connected to an individual, a social position, a community or to another concept we cannot precisely understand. Of course, material and immaterial aspects do not always exclude each other, and a single object can be used for both. However, a first inspection of these weapons shows that some of them cou…

Un nouveau regard sur les épées à poignée métallique de l’âge du Bronze à la lumière des rayons X

2023

Les épées de l’âge du Bronze, a fortiori celles à poignée métallique, figurent parmi les objets les mieux documentés de la période, avec un grand nombre d’études réalisées à l’échelle européenne depuis la fin du XIXe siècle. Malgré tout, l’emploi de techniques d’imagerie utilisant les rayons X, telles que la radiographie et la tomographie, permettent de porter un regard nouveau sur ces armes grâce à l’examen de leurs entrailles qui révèlent certaines techniques mises en place par les artisans pour leur production. Ces épées sont en effet des objets complexes formés de plusieurs pièces agencées à l’aide de techniques variées, pour lesquelles les artisans de l’âge du Bronze se sont montrés tr…

Le phénomène des épées, une vision européenne

2022

The mixed capacitated general routing problem with turn penalties

2011

In this paper we deal with the mixed capacitated general routing problem with turn penalties. This problem generalizes many important arc and node routing problems, and it takes into account turn penalties and forbidden turns, which are crucial in many real-life applications, such as mail delivery, waste collection and street maintenance operations. Through a polynomial transformation of the considered problem into a Generalized Vehicle routing problem, we suggest a new approach for solving this new problem by transforming it into an Asymmetric Capacitated Vehicle routing problem. In this way, we can solve the new problem both optimally and heuristically using existing algorithms. A powerfu…

The Chinese as targets in Polish humorous discourse

2019

Abstract The paper discusses contemporary Polish humor which features references to Chinese language and culture. Together with the ideological, political, financial and economic visibility of China, its presence in Polish humorous discourse is on the rise. Jokes, cabaret sketches and visual materials, such as memes, more and more frequently use the Chinese as targets for entertaining the audience. The article will analyze the instances of Polish humorous discourse (largely Internet memes) to show which are the most frequent specific stereotypes about the Chinese and how that relates to Davies’s models of target choice. The results suggest that Polish humor about the Chinese as an untypical…