Preliminary Results on the Performance of Cost-effective GNSS Receivers for RTK

Author(s):  
Somnath Mahato ◽  
Atanu Santra ◽  
Sukabya Dan ◽  
Partha Rakshit ◽  
P Banerjee ◽  
...  
2000 ◽  
Vol 6 (1_suppl) ◽  
pp. 155-157 ◽  
Author(s):  
Craig Kennedy ◽  
Peter Yellowlees

A pilot trial was established to support visiting psychiatric services and local public and private practitioners through the use of videoconferencing. The purpose of the trial was to determine whether people in the community received better health-care with telemedicine. A community-based approach was used to evaluate health outcomes, costs, utilization, accessibility, quality and needs for such services in a rural community in Queensland. Over a two-year period data were collected from 124 subjects who met the criteria of having a mental health problem or mental disorder. Nine further subjects refused to participate in the study. Only 32 subjects used videoconferencing to receive mental health services. Preliminary results did not show any significant improvements in wellbeing or quality of life, although the time span was relatively short. However, the results confirmed that the people were no worse off from a consumer or a practitioner perspective from using videoconferencing. Most consumers found that videoconferencing with a psychiatrist moderately or greatly helped them in managing their treatment, with 98% of them preferring to be offered videoconferencing in combination with local services. Overall, videoconferencing is a crucial part of enhancing psychiatry services in rural areas. However, it is not necessarily cost-effective for all consumers, general practitioners, psychiatrists, or the public mental health service.


2009 ◽  
Vol 14 (37) ◽  
Author(s):  
L Brouwers ◽  
B Cakici ◽  
M Camitz ◽  
A Tegnell ◽  
M Boman

Experiments using a microsimulation platform show that vaccination against pandemic H1N1 influenza is highly cost-effective. Swedish society may reduce the costs of pandemic by about SEK 2.5 billion (approximately EUR 250 million) if at least 60 per cent of the population is vaccinated, even if costs related to death cases are excluded. The cost reduction primarily results from reduced absenteeism. These results are preliminary and based on comprehensive assumptions about the infectiousness and morbidity of the pandemic, which are uncertain in the current situation.


Author(s):  
K. Eggenberger ◽  
J.O.A. Robertsson ◽  
D.J. van Manen ◽  
F. Andersson ◽  
Å.S. Pedersen ◽  
...  

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 2503-2503
Author(s):  
Ali Hakan Kaya ◽  
Emre Tekgunduz ◽  
Filiz Bekdemir ◽  
Hikmetullah Batgi ◽  
Tugcenur Yigenoglu ◽  
...  

Abstract Introduction : Febrile neutropenia (FN) is an important cause of mortality in hematology practice. Prompt recognition and treatment of FN is crucial to prevent development of sepsis and subsequent mortality. The duration of empirical antibiotherapy in hemodynamically stabile, afebrile, culture negative patients without an infectious focus is a controversial issue. Recently published guidelines encourage the use of early cessation of empirical antibiotherapy in these patients. Here we report our preliminary experience of early discontinuance of empirical antibiotherapy in febrile neutropenic patients who were treated with a risk-adapted strategy. Methods: All consecutive patients who were treated during June 2014-April 2016 period and presented with FN were included. Demographic and clinical data of patient cohort was prospectively collected within the context of institutional FN registry and analyzed retrospectively. Previously established standard criteria are used to diagnose FN episodes. MASCC score defined the risk category of patients. A new FN episode was considered when FN re-occurred in a patient who remained afebrile for at least 72 hours after discontinuation of antibiotics. All patients were treated within the framework of a written, institutional FN guideline, which is in line with EGIL-4 (European Conference on Infections in Leukemia) recommendations. Empirical antibiotherapy was stopped in patients, who were hemodynamically stabile, had no infectious focus, had negative culture results, received broad-spectrum empiric antibiotherapy for 3 days and were afebrile for at least 2 days. Results: The study included a total of 137 patients (87 males-50 females). Median age of patients was 49 (16-87). All patients were in high-risk group according to MASSC criteria. Demographic and clinical features of the study cohort are summarized in Table-1. During the study period 249 FN episodes were evaluated. Empirical antibiotherapy was discontinued in 47 (18,9%) FN episodes in 44 (32,1%) patients. Following cessation of empirical antibiotherapy, 11 (23,4%) new FN episodes developed and no patient infection-related deaths in the following 100 days. Discussion: Our preliminary results indicate that cessation of empirical antibiotherapy in a strictly defined patient population with FN seems to be feasible. We were able to stop antibiotherapy in 18,9% of patients and 76,6% of them did not experience a new FN episode. This strategy is cost-effective and seems to be quite safe, as we did not observed any infection-related deaths in the first 100 days following discontinuation of antibiotherapy. These patients were also protected from possible side effects of unnecessary antibiotics. Future studies will define the role of this provocative approach and may change the way we treat febrile neutropenic patients. Table Demographic and clinical characteristics of patients Table. Demographic and clinical characteristics of patients Disclosures Demirkan: Amgen: Consultancy.


Author(s):  
Salar Sajedi ◽  
Navid Zeraatkar ◽  
Mohsen Taheri ◽  
Sanaz Kaviani ◽  
Hadi Khanmohammadi ◽  
...  

Author(s):  
Enrico Ferro ◽  
Michele Osella ◽  
Yannis Charalabidis ◽  
Euripides Loukis

The chapter introduces the concept of policy gadgets that may be expressed as the combined use of computer simulations and social media in policymaking. Such a concept is exemplified by providing the description of an Italian campaign on telemedicine, launched by the regional government of Piedmont (IT) in the context of an international research project named PADGETS (www.padgets.eu). In addition, some preliminary results are presented, which are very encouraging. The use of such instruments in urban and regional policymaking may generate significant advantages in terms of conveying society’s inputs to policy makers, by providing them with a set of concise, fresh, and relevant data in a cost effective and easily understandable way.


Author(s):  
M. Bouzit ◽  
A. Chaibi ◽  
K. J. De Laurentis ◽  
C. Mavroidis

This paper presents a novel tactile navigation system for the blind. The device is portable and cost effective, and will allow visually impaired individuals to navigate through familiar and non-familiar environments without relying on the assistance of a guide. The “Tactile Handle” consists of an array of vibro-tactile actuators positioned to match the finger phalanxes, proximity sensors, and an embedded micro-controller. The handle processes sensor signals and outputs information to the user through variable and synchronized vibrations, which will enhance the sense of orientation and distance for the user. The prototype has an ergonomic design, is lightweight, compact, and adjustable to different hand sizes. This paper describes the concept of its use as a navigation system for the visually impaired and the preliminary results for the tactile perception of 30 sighted users of different genders and hand sizes.


2020 ◽  
Author(s):  
Michela Ravanelli ◽  
James Foster

<p>The VARION (Variometric Approach for Real-Time Ionosphere Observation) algorithm has been successfully applied to TIDs (Travelling ionospheric disturbances) detection in several real-time scenarios [1, 2]. VARION, thus, estimates sTEC (slant total electron content) variations starting from the single time differences of geometry-free combinations of GNSS carrier-phase measurements. This feature makes VARION suitable to also leverage GNSS observations coming from moving receivers such as ship-based GNSS receivers: the receiver motion does not affect the sTEC estimation process.</p><p>The aim of this work is to use the observations coming from two GNSS receivers installed on a ship moving near Kauai Island in the Hawaiian archipelago to detect the TIDs connected to the 2010 Maule earthquake and tsunami [3]. Indeed, this earthquake triggered a tsunami that affected all the Pacific region and that reached the Hawaiian islands after about 15 hours. All our analysis was carried out in post-processing, but simulated a real-time scenario: only the data available in real time were used.</p><p>In order to get a reference, the ship-based sTEC variations were compared with the ones coming from GNSS permanent stations situated in the Hawaiian Islands. In particular, if we considered the same satellite, the same TID is detected by both ship and ground receivers. As expected, the ship-based  sTEC variations are a little bit noisier since they are coming from a kinematic platform.</p><p>Hence, the results, although preliminary, are very encouraging: the same TIDs is detected both from the sea (ships) and land (permanent receivers).  Therefore, the VARION algorithm is also able to leverage observations coming from ship-based GNSS receivers to detect TIDs in real-time.</p><p>In conclusion, we firmly believe that the application of VARION to observation coming from ship-based GNSS receivers could really represent a real-time and cost-effective tool to enhance tsunami early warning systems, without requiring the installation of complex infrastructures in open sea.</p><p>References</p><p>[1] Giorgio Savastano, Attila Komjathy, Olga Verkhoglyadova, Augusto Mazzoni, Mattia Crespi, Yong Wei, and Anthony J Mannucci, “Real-time detection of tsunami ionospheric disturbances with a stand-alone gnss receiver: A preliminary feasibility demonstration, ”Scientific reports, vol. 7, pp. 46607, 2017.</p><p>[2] Giorgio Savastano, Attila Komjathy, Esayas Shume, Panagiotis Vergados, Michela Ravanelli, Olga Verkhoglyadova, Xing Meng, and Mattia Crespi, “Advantages of geostationary satellites for ionospheric anomaly studies: Ionospheric plasma depletion following a rocket launch,”Remote Sensing, vol. 11, no. 14, pp. 1734, 2019</p><p>[3] https://earthquake.usgs.gov/earthquakes/eventpage/official20100227063411530_30/executive</p>


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