15 research outputs found
Microcontroller Based Rudder Control System for Autonomous Flight Vehicle
No full textThis paper addresses the control system to control
required yaw position of autonomous flight vehicle. This system
operates in two operational modes: manual control mode and
automatic control mode. In the manual control mode, the signals
from RC receiver are read, manipulated and also sent to the
servo motor. Therefore should the rest of the system fail, it is
possible to maintain manual control. In the automatic control
mode, the computed value is applied to the servo motor. In case
of the manual-to-auto mode change, the controller value is set so
that the action value is equal to current manual action value, to
ensure no bumpy control transition. In order to ensure stable
control, the deflection angle is limited in the allowable range. The
control algorithm has been implemented into the microcontroller
that receives position commands, creates PWM signals for
servomotor, and switches between pilot and auto control. For this
control technology, the assembly programming language has
been used
Late Tournaisian conodonts from the Taungnyo Group near Loi Kaw, Myanmar (Burma): Implications for Shan Plateau stratigraphy and evolution of the Gondwana-derived Sibumasu Terrane
No full textCarboniferous conodonts are reported for the first time from Myanmar (Burma). Conodont faunas representative of the 'Scaliognathus anchoralis' and 'Gnathodus typicus Protognathodus cordiformis' conodont zones date the sampled 'Taungnyo' Group south of Loi Kaw, Kayah State as late Tournaisian confirming a Mississippian (Lower Carboniferous) age for the sampled part of this stratigraphic unit. The dated strata are stratigraphically just below the Tournaisian-Visean (T-V) boundary. Tournaisian strata are thus for the first time unequivocally demonstrated in the Shan Plateau region of Myanmar. Similar conodont faunas from the T-V boundary interval in SE Asia indicate a complete stratigraphic sequence at this level in shallow-marine sequences on intra- Tethyan Cathaysian tectonic blocks (South China) and in deep-marine Palaeo-Tethyan sediments (cherts of the Inthanon suture zone, Thailand). However, in shallow-marine sequences on the Sibumasu Block, located on the NE margin of Gondwana in the Carboniferous, they demonstrate a non-sequence or unconformity at this level, also seen elsewhere in Gondwana. Biogeographic links between upper Tournaisian and early Visean conodonts on the Sibumasu Terrane and Laurentia and Eastern Australian Gondwana support a NW Australian Gondwana margin position for Sibumasu in the Late Palaeozoic
Biostratigraphic correlation of Carboniferous-Permian sequences of the western margin of the Sibumasu Block in the Eastern Highlands of Myanmar
No full textThis study firstly presented that the Carboniferous-Permian sequences along the western margin of the Sibumasu Block in Myanmar are characterised by Mississippian Cimmerian-type fauna, Kungurian admixtures of both Cathaysian and Gondwanan taxa, Cathaysian-affinity flora, and Guadalupian warm-water organisms. These biotas represent different paleolatitude settings within the Cimmerian continents and distinct drifting histories. The Asselian to Sakmarian glaciomarine deposits in the lower part of the Mergui Group contain typical Gondwana-type cold-water faunas found in other parts of the Sibumasu, but these have not yet been observed in the Shan Scarp zone of Myanmar. Due to the absence of Pennsylvanian strata, the plant fossil-bearing Mwedaw Beds overlie the Tournaisian-Visean Loikaw Beds and are underlain by the Thitispin Formation in the Shan Plateau zone. The Permian sequences are most clearly observed in the Shan Scarp zone, which lacks Carboniferous strata
The “Panghkawkwo graptolite bed” (Llandovery, Silurian), Myanmar and the location of the Sibumasu (or Sibuma) Terrane in the Silurian
No full textNew Evidence for Carboniferous Age of the Taungnyo Group Exposed in the Loikaw Area, Kayah State
No full textNew Carboniferous faunas from the Taungnyo Group, Loikaw area are reported. These include two new Late Tournaisian/early Visean (Lower Carboniferous/Mississippian) trilobite species, 'Liobole loikawensis', 'Crassibole karenniensis' and conodont faunas representative of the late Tournaisian 'Scaliognathous anchoralis' and 'Gnathodus typicus-Protognathodus' cordiformis conodonts zone. The age of the Taungnyo Group, Loikaw area is confirmed as Lower Carboniferous (Mississippian) for the sampled part of this stratigraphic unit. The presence of Carboniferous in the Shan Plateau Region of Myanmar is confirmed. The trilobites are most closely related to species from deep water facies of late Tournaisian and Visean age from central and Western Europe. Biogeographic links between upper Tournaisian and early Visean conodonts on the Sibumasu Terrane and Laurentia and Eastern Australian Gondwana support a NW Australian Gondwana margin position for Sibumasu in the Late Paleozoic
A Functional Resonance Analysis Method to risk analysis of functional flood defenses in Yangon
No full textMultifunctional use of flood defences is seen as a promising solution for improving the synergy between flood protection and urban development combining the functions can, however, create unintended dependencies, which can influence the desired performance of the system in unexpected ways. Recognizing the risks associated with these dependencies early during the conceptual design phase can help to improve the system capability to mitigate the resulting threats and to take advantage of the opportunities created. The proposed systems use the
Functional Resonance Analysis Method (FRAM) for qualitative risk analysis of multifunctional flood defences. The analysis results are used to identify the threats and opportunities that need attention during the design of a multifunctional flood defence and to propose recommendations for how to address them
Computer-Assisted Screening for Cervical Cancer Using Digital Image Processing of Pap Smear Images
No full textCervical cancer can be prevented by having regular screenings to find any precancers and treat them. The Pap test looks for any abnormal or precancerous changes in the cells on the cervix. However, the manual screening of Pap smear in the microscope is subjective with poorly reproducible criteria. Therefore, the aim of this study was to develop a computer-assisted screening system for cervical cancer using digital image processing of Pap smear images. The analysis of Pap smear image is important in the cervical cancer screening system. There were four basic steps in our cervical cancer screening system. In cell segmentation, nuclei were detected using a shape-based iterative method, and the overlapping cytoplasm was separated using a marker-control watershed approach. In the features extraction step, three important features were extracted from the regions of segmented nuclei and cytoplasm. RF (random forest) algorithm was used as a feature selection method. In the classification stage, bagging ensemble classifier, which combined the results of five classifiers—LD (linear discriminant), SVM (support vector machine), KNN (k-nearest neighbor), boosted trees, and bagged trees—was applied. SIPaKMeD and Herlev datasets were used to prove the effectiveness of our proposed system. According to the experimental results, 98.27% accuracy in two-class classification and 94.09% accuracy in five-class classification was achieved using the SIPaKMeD dataset. When the results were compared with five classifiers, our proposed method was significantly better in two-class and five-class problems
Clinical Profile of Intermediate Syndrome in Organophosphate Poisoning
No full textOrganophosphate (OP) poisoning is a major global health problem, causing over 200,000 deaths annually especially in developing countries. In Poison Treatment Center, New Yangon General Hospital, Myanmar, OP poisoning accounts for 14% of total poison admission in 2013, 17% in 2014 and 10.3% in 2015 respectively
Development of Waypoint Navigation System for Autonomous Vehicle
No full textAutonomous vehicle can be used for various kinds of
surveillance and data collection missions. The navigation and
control system of the vehicle is the key to a successful mission.
This paper emphasizes on the waypoint navigation system with
Global Positioning System (GPS). The vehicle position in terms
of latitude, longitude and heading is extracted from GPS NMEA
protocol. The destination waypoints are predefined and the flight
plan is preprogrammed in the Microchip PIC18F452
microcontroller. In this paper, rudder control navigation system
is used while the elevator and aileron are being controlled by the
FMA copilot. Through grounded tests the navigation system
qualitatively proved to be able to complete levels
Analysis of accident severity factor in Road Accident of Yangon using FRAM and Classification Technique
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