Search results for "Core"
showing 10 items of 1999 documents
Gastric Cancer: Locoregional Disease
2021
Gastric cancer (GC) is still a worldwide major leading cause of cancer death which shows large geographical differences. Despite an overall decline in incidence and mortality over the last decades, GC remains a poor prognosis disease since patients often present with advanced stage of disease. A large number of risk factors have been associated with GC. Thus, prevention (environment and lifestyle factors) and early diagnosis may be the most promising strategies for cancer control and key strategies to reduce mortality. Surgical resection remains the main form of curative treatment whenever feasible. Endoscopic approaches have been used as valid alternatives to surgery for selected patients.…
Public sector reputation and netpromoter score
2021
AbstractReputation of public sector organizations is increasingly formed through Word of Mouth (WOM) as citizens and stakeholders share their experiences with others both online and offline. Understanding and measuring WOM is a challenge for many public sector organizations, who often resort to measurement tools designed for the private sector. This paper looks at a popular WOM measurement tool, namely the Net Promoter Score (NPS) in the context of public sector organizations. In this paper, we ask how well does the NPS describe public sector reputation, and look at what the different stakeholder groups categorized by NPS are like in the public sector. As an illustrative case, we report fin…
Early-Career Researchers’ Perceptions of the Prevalence of Questionable Research Practices, Potential Causes, and Open Science
2017
Abstract. Young researchers of today will shape the field in the future. In light of current debates about social psychology’s research culture, this exploratory survey assessed early-career researchers’ beliefs (N = 88) about the prevalence of questionable research practices (QRPs), potential causes, and open science as a possible solution. While there was relative consensus that outright fraud is an exception, a majority of participants believed that some QRPs are moderately to highly prevalent what they attributed primarily to academic incentive structures. A majority of participants felt that open science is necessary to improve research practice. They indicated to consider some open s…
Fourth Workshop on using Emerging Parallel Architectures
2012
AbstractThe Fourth Workshop on Using Emerging Parallel Architectures (WEPA), held in conjunction with ICCS 2012, provides a forum for exploring the capabilities of emerging parallel architectures such as GPUs, FPGAs, Cell B.E., Intel M.I.C. and multicores to accelerate computational science applications.
Instability Resistance Training Across the Exercise Continuum
2013
Context: Instability resistance training (IRT; unstable surfaces and devices to strengthen the core or trunk muscles) is popular in fitness training facilities. Objective: To examine contradictory IRT recommendations for health enthusiasts and rehabilitation. Data Sources: A literature search was performed using MEDLINE, SPORT Discus, ScienceDirect, Web of Science, and Google Scholar databases from 1990 to 2012. Study Selection: Databases were searched using key terms, including “balance,” “stability,” “instability,” “resistance training,” “core,” “trunk,” and “functional performance.” Additionally, relevant articles were extracted from reference lists. Data Extraction: To be included, rese…
Small-core chalcogenide microstructured fibers for the infrared.
2008
International audience; We report several small-core chalcogenide microstructured fibers fabricated by the "Stack & Draw" technique from Ge(15)Sb(20)S(65) glass with regular profiles. Mode field diameters and losses have been measured at 1.55 microm. For one of the presented fibers, the pitch is 2.5 microm, three times smaller than that already obtained in our previous work, and the corresponding mode field diameter is now as small as 3.5 microm. This fiber, obtained using a two step "Stack & Draw" technique, is single-mode at 1.55 microm from a practical point of view. We also report the first measurement of the attenuation between 1 and 3.5 microm of a chalcogenide microstructured fiber. …
All-Optical Tuning of WGMs in Microspheres Made of Er/Yb Codoped Optical Fiber
2014
All-optical, pump-assisted, thermal tuning of high-Q whispering-gallery mode (WGM) resonances of microspheres is demonstrated. The microspheres were made of an Er/Yb codoped single-mode silica optical fiber. The pump light absorbed by the active ions heats the microsphere, which leads to the shift of the resonances. A tuning range in excess of 2 nm in the C-band is achieved. The presence of active ions is restricted to the core of the microsphere. The WGM fields, which are confined in a region close to the surface of the microsphere, do not overlap with the dopant. Thus, high-Q resonances (>10 7 ) are achieved, as in pure silica microspheres, even at optical wavelengths within the absorptio…
Mid-infrared supercontinuum generation from 2 to 14 μm in various chalcogenide glasses optical fibers
2019
Chalcogenide glasses optical fibers with step index or microstructured profiles are drawn from low toxicity compositions. Supercontinuum generation lead to an infrared spectrum spanning from 2 to 14µm with a 10µm core fiber of 40mm length.
TeO2-ZnO-La2O3 tellurite glass system investigation for mid-infrared robust optical fibers manufacturing
2021
Abstract TeO2-ZnO-La2O3 (TZL) ternary glasses were investigated in order to manufacture step-index optical fibers with low optical losses in the near- and mid-infrared ranges and superior mechanical properties. To identify appropriate TZL glass compositions for optical fibers manufacturing, the whole vitreous domain of the ternary diagram was explored by characterizing bulk samples from thermal and optical point of view. Investigations were focused on understanding how the refractive index evolves as a function of the composition. For this, several parameters were analyzed such as density, molar volume, oxygen packing density, molar refractivity, polarizability and optical basicity. Finally…
Mid-infrared supercontinuum generation in suspended-core Chalcogenide and Tellurite optical fibers
2013
We report the experimental generation of mid-infrared supercontinuum in tellurite and chalcogenide suspended-core fibers pumped close to their zero-dispersion in femtosecond regime. The resulting supercontinua extend until 2.8µm in tellurite and 3.2µm in chalcogenide fibers.