Search results for "TRIPS"

Time-dependent transport in Aharonov–Bohm interferometers

2010

A numerical approach is employed to explain transport characteristics in realistic, quantum Hall based Aharonov-Bohm interferometers. First, the spatial distribution of incompressible strips, and thus the current channels, are obtained applying a self-consistent Thomas-Fermi method to a realistic heterostructure under quantized Hall conditions. Second, the time-dependent Schr\"odinger equation is solved for electrons injected in the current channels. Distinctive Aharonov-Bohm oscillations are found as a function of the magnetic flux. The oscillation amplitude strongly depends on the mutual distance between the transport channels and on their width. At an optimal distance the amplitude and t…

The equality case in a Poincaré–Wirtinger type inequality

2016

It is known that, for any convex planar set W, the first non-trivial Neumann eigenvalue μ1 (Ω) of the Hermite operator is greater than or equal to 1. Under the additional assumption that Ω is contained in a strip, we show that β1 (Ω) = 1 if and only if Ω is any strip. The study of the equality case requires, among other things, an asymptotic analysis of the eigenvalues of the Hermite operator in thin domains.

Academic capitalism and the informational fraction of the transnational capitalist class

2013

This article is based on the idea that if we are witnessing an on-going shift towards the transnational phase of capitalism, this objective structural change should also be taken into account in higher education studies. In this sense, this article reflects the increased scholarly attention into the relationship between globalisation and higher education since the 1990s. The main purpose of this article is to contribute to these discussions by developing dialogue between global capitalism theories and the theory of academic capitalism. In order to achieve this, William Robinson's concept of the transnational capitalist class (TCC) will be amended to include also the informational fraction. …

Les exclus de la mobilité : de l'observation à la décision

2014

In contemporary societies, mobility is considered as a social norm necessary for integration. Conversely, immobility is often seen as the opposite. Therefore, it is associated with a significant risk of exclusion. An approach in terms of exclusion involves a sociological orientation. Nevertheless, this thesis follows a geographical approach. Thus, a first question emerges from this disciplinary position: immobility is it a geographical object? Furthermore, it is possible to consider the mobility and immobility as equivalent and not opposed. This means that their impact may not be reversed. This position engages a second question: the relationship between immobility and exclusion is it legit…

“I Learned It through the Grapevine…”: Exploring Atypical Ecosystems in Schools as a New Out-of-School Learning Site

2017

Ecology may be seen as one of the main topics of biological education as it functions at the interface of several other aspects of biology. Although it may easily be conveyed through field trips and hands-on activities, it is taught theoretically most of the time and in traditional ecosystems like forests or lakes. For this study, new teaching material has been developed that demonstrates the exploration of more special or “atypical” ecosystems in biology classes. It combines working in a local vineyard with hands-on elements for school. By exploring a human-made ecosystem, which is different from those traditionally used, students gain content knowledge and get to know scientific methods. …

Skolu ekskursijas, to nozīme un veidi

1927

Coping with the costs of car dependency : A system of expedients used by low-income households on the outskirts of Dijon and Paris

2018

International audience; Living on low incomes and in a car-dependent area is often interpreted as a double burden for households, even if the two characteristics are often interdependent. While their capacity for mobility is lower, low-income households in outer suburban areas are nonetheless mobile. Their capacities in this domain should not be underestimated or overlooked. They can command a set of alternative practices or expedients to deal with car-related economic stress by a set of resources derived essentially from spatial proximity. This article aims to present and analyse the diversity of these expedients for the case of outer suburban areas around Paris and Dijon. The analysis of …

Local Shock-Wave Lithotripsy of Distal Ureteral Calculi

1988

Abstract Since the initiation of the clinical trial utilizing a second-generation lithotripor (Lithostar, Siemens, Erlangen, FRG), 96 patients with distal ureteral calculi (i.e. calculi below the pelvic brim) underwent local shock-wave lithotripsy. Routine treatment was conducted under intravenous sedation and light analgesia only. Complete stone disintegration was achieved in 84 patients (87.5%), 11 requiring two sessions and 1 patient, three. In 7 patients ureteroscopy became necessary after unsuccessful local shock-wave treatment. In 2 of these patients a 9-french flexible ureteroscope and the Storz Q-switched neodymium-YAG laser was used for stone disintegration. In 3 cases loop extract…

Intravascular Lithotripsy for Treatment of Calcified Lesions During Carotid Artery Stenting

2020

Purpose: To report the use of intravascular lithotripsy (IVL) in the treatment of calcified carotid artery lesions. Materials and Methods: The records of 21 high-surgical-risk patients (mean age 75.1±8.1 years; 17 men) who were treated at 8 centers for carotid artery stenosis ≥70% were retrospectively reviewed. Twelve patients had a history of cerebrovascular disease. All patients had heavily calcified carotid artery lesions: 19 de novo and 2 in-stent restenoses (ISR). The mean baseline stenosis was 82.3%±9.7%. IVL was utilized at the discretion of the operator, followed by balloon angioplasty. Embolic protection devices were used in all cases. Results: In 19 patients, IVL was followed by s…

EVALUATION OF LOW-ENERGY EXTRACORPOREAL SHOCK-WAVE APPLICATION FOR TREATMENT OF CHRONIC PLANTAR FASCIITIS

2002

Background: Although the application of low-energy extracorporeal shock waves to treat musculoskeletal disor- ders is controversial, there has been some limited, short-term evidence of its effectiveness for the treatment of chronic plantar fasciitis. Methods: From 1993 to 1995, a prospective, two-tailed, randomized, controlled, observer-blinded pilot trial was performed to assess whether three applications of 1000 impulses of low-energy shock waves (Group I) led to a su- perior clinical outcome when compared with three applications of ten impulses of low-energy shock waves (Group II) in patients with intractable plantar heel pain. The sample size was 112. The main outcome measure was patien…