Search results for "Conti"

Analysis on channel bonding/aggregation for multi-channel cognitive radio networks

2010

Channel bonding/aggregation techniques, which assemble several channels together as one channel, could be used in cognitive radio networks for the purpose of achieving better bandwidth utilization. In existing work on this topic, channel bonding/aggregation is focused on the cases when primary channels are time slotted or stationary as compared with secondary users' activities. In this paper, we analyze the performance of channel bonding/aggregation strategies when primary channels are not time slotted and the time scale of primary activities is at the same level as the secondary users', given that spectrum handover is not allowed. Continuous time Markov chain models are built in order to a…

Evaluation of Load transfer in rigid pavements by Rolling wheel deflectometer and Falling weight deflectometer

2020

Abstract Rigid pavements have widespread use, e.g, in motorways and airports, due to their excellent properties such as high bearing capacity and long lifetime. However, when rigid pavements fail it is often due to bad load transfer efficiency (LTE) at its joints. Traditional methods of measuring LTE can be time consuming. Here, we study the possibility of measuring LTE using a moving load with the aim of achieving higher productivity. An experiment simulating Rolling Weight Deflectometer (RWD) measurements on a joint was carried out to gain understanding and confidence that can guide the analysis of real RWD data. Continuous data from measurements across a joint allows for determination of…

Obstructive sleep apnea: arterial oxygen desaturation coincides with increases in systemic oxidative stress markers measured with continuous monitori…

2007

A Comparison Between Japanese and French Cost Management – Contingency and Institutional Perspectives

2018

From an historical perspective, management accounting is a very recent phenomenon (see Johnson & Kaplan, 1987) and is culturally grounded in a few old-industrialized countries, in Europe: Germany, United-Kingdom, France, but also in Japan and in the United-States. Notwithstanding the cultural dominance of English-speaking countries on management, non-English speaking countries keep strong institutional and cultural roots that still influence their ways of managing companies. This is the case when looking at management accounting and more especially at cost accounting and cost management practices (now cost accounting/management). This paper, based on contingency and institutional frameworks…

PERSONAL QUALITIES OF LEARNING FACILITATORS IN ADULT AND CONTINUING EDUCATION : OPINION OF ADULT EDUCATORS IN LATVIA AND LITHUANIA

2015

The paper highlights the key findings from a comparative study conducted in 2011- 2012 using the project “Qualified to Teach” − QF2TEACH first wave questionnaire (www.qf2teach.eu). The questionnaire was structured in nine domains: personal qualities; interpersonal behaviour and communication with learners; cooperation with the external environment; planning and management; access and progression of learners; subject-related, specialist domain; monitoring and assessment of learning processes; didacticalmethodological domain; personal development and reflection. In present paper the main results of transnational survey in Latvia and Lithuania are analysed in order to evaluate the importance o…

FAST EDGE-FILTERED IMAGE UPSAMPLING.

2011

We present a novel edge preserved interpolation scheme for fast upsampling of natural images. The proposed piecewise hyperbolic operator uses a slope-limiter function that conveniently lends itself to higher-order approximations and is responsible for restricting spatial oscillations arising due to the edges and sharp details in the image. As a consequence the upsampled image not only exhibits enhanced edges, and discontinuities across boundaries, but also preserves smoothly varying features in images. Experimental results show an improvement in the PSNR compared to typical cubic, and spline-based interpolation approaches.

TEACHER TEAMS AND SCHOOLS BECOME LEADERS TO DISSEMINATE INNOVATIVE PRACTICE

2016

We will introduce a study about teachers taking part in networking for personal development and becoming teacher leaders. In 2011 a multilevel national joint collaboration network of schools with innovative experience was created to foster dissemination of new teaching and learning experiences among teachers. In order to organize learning for teachers, a lesson based collaborative continuous teacher professional learning model was implemented. The research shows that conducting and analyzing lessons has helped participants become more competent professionals and develop skills that are crucial for a good leader. Categories characterizing teacher leaders and lead schools were identified. Fac…

Signal processing procedures for the evaluation of the cardiovascular effects in the obstructive sleep apnea syndrome

2002

A new index, the cross-power index (CPI), is proposed to quantify the severity of obstructive sleep apnea syndrome (OSAS) in terms of its cardiovascular effects. On the basis of the influences that recurring drops in oxygen saturation have on systolic blood pressure variability of OSAS patients, CPI is defined as the integral of the cross-spectrum modulus between systolic blood pressure and oxygen saturation. In a test group of 22 subjects, CPI correctly identified all 15 OSAS patients included in the pool. Moreover, evaluation of CPI in six OSAS patients sleeping with and without a CPAP (continuous positive airway pressure) device demonstrated that CPAP treatment substantially reduced the …

Developing adult motivation for continuous training

2021

Traditional education focused primarily on the moment of teaching, on the moment of transmitting information, knowledge, and only then on aspects related to ethical, motivational, moral nature. Contemporary society in a continuous remodeling and change, no longer coincides, no longer accepts such a system. Traditional learning does not keep pace with contemporary society. The aim of this study is to investigate the motivation of learning in adulthood. In the motivational structure of the investigated adults, extrinsic reasons predominated, indirectly related to the learning activity, such as: the need to advance professionally, to keep up with the times, to obtain a social status as high as…

Effectiveness of mandibular advancement appliances in treating obstructive sleep apnea syndrome: A systematic review

2015

Objectives/Hypothesis Mandibular advancement devices are an alternative to continuous positive airway pressure for patients with mild or moderate obstructive sleep apnea/hypopnea syndrome (OSAHS). The main aim of this review was to assess the effectiveness of different devices in treating OSAHS, based on polysomnographic measurements such as the apnea/hypopnea index (AHI) and oxygen saturation, and on changes in the upper airway and improvements in the most common symptoms: snoring and somnolence. Their adverse effects were also noted. Study Design Systematic review. Methods Following an exhaustive search in the Medline, Scopus, and Cochrane Library databases, 22 articles published in the p…