نتایج جستجو برای: global positioning systems

تعداد نتایج: 1594635  

Journal: :Geospatial health 2015
Tawanda Manyangadze Moses John Chimbari Michael Gebreslasie Samson Mukaratirwa

Schistosomiasis continues to impact socio-economic development negatively in sub-Saharan Africa. The advent of spatial technologies, including geographic information systems (GIS), Earth observation (EO) and global positioning systems (GPS) assist modelling efforts. However, there is increasing concern regarding the accuracy and precision of the current spatial models. This paper reviews the li...

Journal: :Environmental Health Perspectives 2002
Robert C Spear Alan Hubbard Song Liang Edmund Seto

Mathematical models of disease transmission processes can serve as platforms for integration of diverse data, including site-specific information, for the purpose of designing strategies for minimizing transmission. A model describing the transmission of schistosomiasis is adapted to incorporate field data typically developed in disease control efforts in the mountainous regions of Sichuan Prov...

2015
Wuthichai Kaewwaen Adisak Bhumiratana

The agricultural land use changes that are human-induced changes in agroforestry ecosystems and in physical environmental conditions contribute substantially to the potential risks for malaria transmission in receptive areas. Due to the pattern and extent of land use change, the risks or negatively ecosystemic outcomes are the results of the dynamics of malaria transmission, the susceptibility ...

2013
Richa Singh Sumit Sharma

Position estimation and motion processing in 3D space are becoming increasingly popular because they find applications in many fields including navigation, surveying, gaming, security, medical, etc. Conventional tracking systems are based on a global positioning system (GPS) or similar principles. Traditionally, localization is done with the help of distance measurements of known reference and ...

2014
Shruthi Udayakumar

The rapidly aging population not only causes long hospital waiting times and expensive hospital waits, but also it increases the time to fix an appointment, workload of doctors and medical practitioners. Managing the cost and quality of treatment and caring of seniors are becoming key pressing issues both in developed and developing countries. Diagnosing and continuous record of realtime data b...

2016
Guoqing Zhang Wenbin Shen Changyi Xu Yiqing Zhu

In this study, Gravity Recovery and Climate Experiment (GRACE) RL05 data from January 2003 to October 2014 were used to extract the coseismic gravity changes induced by the 24 May 2013 Okhotsk Mw8.3 deep-focus earthquake using the difference and least square fitting methods. The gravity changes obtained from GRACE data agreed well with those from dislocation theory in both magnitude and spatial...

2005
Ali Asadian Behzad Moshiri Ali Khaki Sedigh

In this paper we propose a new data fusion method based on particle filtering and fuzzy logic in order to adaptively integrate global positioning system and strapdown inertial navigation system (GPS/SDINS). This approach will reduce the dependence of the stable solution on stochastic properties of the system which is a function of vehicle dynamics and environmental conditions So the proposed sc...

2013
Geoffrey Ho Justin G. Hollands Michael Tombu Ken Ueno Matt Lamb

Blue force tracking (BFT) is a military technology that provides positional awareness of friendly forces on a digital map through global positioning system (GPS) technology. For dismounted soldiers, having readily available information on the location of friendly forces can be critical for mission success. However, GPS can report positions that are spatially inaccurate. The present study requir...

2000
Matthew B. Higgins

Global Positioning System (GPS) surveying is now seen as a true three dimensional tool and GPS heighting can be a viable alternative to other more conventional forms of height measurement. This paper examines the limitations and possibilities of GPS heighting. The first part of the paper details the limitations of GPS heighting, including those factors that affect the GPS height measurement its...

2007
Ilya R. Fischhoff Siva R. Sundaresan Justine Cordingley D. I. Rubenstein

Prey species must adapt their behavior to avoid predation. As a key prey item for lions (Panthera leo), plains zebras (Equus burchelli) were expected to respond to immediate threats posed by lions in their area. In addition, zebras were predicted to exhibit behavior tuned to reduce the potential for encounters with lions, by modifying their movement patterns in the times of day and habitats of ...

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