Search results for "hill"

Market Polarization and the Phillips Curve

2021

The Phillips curve has flattened out over the last decades. We develop a model that rationalizes this phenomenon as a result of the observed increase in polarization in many industries, a process along which a few top firms gain an increasing share of their industry market. In the model, firms compete a la Bertrand and there is exit and endogenous market entry, as well as optimal up and downgrading of technology. Firms with larger market shares find optimal to dampen the response of their price changes, thus cushioning the shocks to their marginal costs through endogenous countercyclical markups. Thus, regardless of its causes (technology, competition, barriers to entry, etc.), the recent i…

A branch and bound algorithm for the matrix bandwidth minimization

2008

In this article, we first review previous exact approaches as well as theoretical contributions for the problem of reducing the bandwidth of a matrix. This problem consists of finding a permutation of the rows and columns of a given matrix which keeps the non-zero elements in a band that is as close as possible to the main diagonal. This NP-complete problem can also be formulated as a labeling of vertices on a graph, where edges are the non-zero elements of the corresponding symmetrical matrix. We propose a new branch and bound algorithm and new expressions for known lower bounds for this problem. Empirical results with a collection of previously reported instances indicate that the propose…

The influence of invertebrates on soil quality in Tutova Hills

2014

The influence of some invertebrates Hymenoptera (Ichneumonidae) on soil quality in Tutova Hills.

Lucian, a new Odysseus? : role and issue of a Homeric character in the work of Lucian of Samosata

2015

The aim of our thesis, which comes within the scope of considering the process of rewriting classic texts in the time period of the second sophistic, is to study the unique importance of Odysseus in the writings of Lucian of Samosata. At first, Odysseus is distinguished from Achilles, a character more monolithic who, even in Homer’s works is constructed in contrast to Odysseus. Moreover, from an isolated quote to intricate references, scattered to create echoes between works seemingly very different, the context in which Odysseus appears is more elaborate and subtler than that of Achilles. Hence, studying and comparing references to both heroes is sufficient to imply Odysseus’ primacy, asso…

Von der Mitte aus beginnen. Überlegungen zu Physiognomik des Kulturwissenschaftlers und zur Form der Kulturwissenschaften

2010

Data from: Plant – herbivorous beetle networks: molecular characterization of trophic ecology within a threatened steppic environment

2015

DNA barcoding facilitates many evolutionary and ecological studies, including the examination of the dietary diversity of herbivores. In this study, we present a survey of ecological associations between herbivorous beetles and host plants from seriously threatened European steppic grasslands. We determined host plants for the majority (65%) of steppic leaf beetles (55 species) and weevils (59) known from central Europe using two barcodes (trnL and rbcL) and two sequencing strategies (Sanger for mono/oligophagous species and Illumina for polyphagous taxa). To better understand the ecological associations between steppic beetles and their host plants, we tested the hypothesis that leaf beetl…

Conclusion. L’habitat de hauteur entre Protohistoire et haut Moyen Âge : pour une approche diachronique

2023

Au travers de ces quelques contributions, ce dossier entend proposer de nouvelles perspectives pour l’approche des occupations de hauteur, en prônant notamment une collaboration plus étroite entre spécialistes des âges des Métaux et de l’Antiquité tardive et du haut Moyen Âge. Cette coopération peut se traduire d’une part à l’échelle des sites, lorsque l’occasion se présente, d’autre part à l’échelle de territoires plus ou moins vastes afin de mettre en évidence l’existence de logiques spatia...

Introduction. L’habitat de hauteur entre Protohistoire et haut Moyen Âge : regards croisés

2023

L’étude des sites de hauteur est aujourd’hui une thématique largement mise à l’honneur par la recherche archéologique. En témoignent les publications collectives et manifestations scientifiques récentes sur le sujet, en particulier pour les âges des Métaux ainsi que pour l’Antiquité tardive et le haut Moyen Âge, périodes au cours desquelles cette forme d’occupation du sol tient une place particulière (pour les publications récentes sur le sujet, voir, entre autres, Delrieu, Furestier, 2018 ; ...

In vivo localized gastrocnemius subtendon representation within the healthy and ruptured human Achilles tendon

2022

The Achilles tendon (AT) is composed of three distinct in-series elastic subtendons, arising from different muscles in the triceps surae. Independent activation of any of these muscles is thought to induce sliding between the adjacent AT subtendons. We aimed to investigate displacement patterns during voluntary contraction (VOL) and selective transcutaneous stimulation of medial (MGstim) and lateral (LGstim) gastrocnemius between ruptured and healthy tendons, and to examine the representative areas of AT subtendons. Twenty-eight patients with unilateral AT rupture performed bilateral VOL at 30% of the maximal isometric un-injured plantarflexion torque. AT displacement was analysed from sagi…

La vita continua. Sotto la nevicata di Caryl Phillips

2012

Recensione del romanzo di Caryl Phillips, Sotto la nevicata (Mondadori 2011)