Method of Using Dual Band RTK Module to Operate Positioning of Display Screen According to the Absolute Position Information about a Hand

2021 ◽  
Author(s):  
Yugo Nakamura ◽  
Tomohiro Hase
Keyword(s):  
Dual Band ◽  
Absolute Position ◽  
Position Information ◽  
The Absolute

scholarly journals Position Estimation of Vehicle Based on Magnetic Marker: Time-Division Position Correction

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8274
Author(s):  
Yeun Sub Byun ◽  
Rag Gyo Jeong
Keyword(s):  
Correction Method ◽  
Position Estimation ◽  
Position Error ◽  
Absolute Position ◽  
Position Information ◽  
Magnetic Marker ◽  
Position Correction ◽  
The Absolute ◽  
Magnetic Markers ◽  
Time Division

During the automatic driving of a vehicle, the vehicle’s positional information is important for vehicle driving control. If fixed-point land markers such as magnetic markers are used, the vehicle’s current position error can be calculated only when a marker is detected while driving, and this error can be used to correct the estimation position. Therefore, correction information is used irregularly and intermittently according to the installation intervals of the magnetic markers and the driving speed. If the detected errors are corrected all at once using the position correction method, discontinuity of the position information can occur. This problem causes instability in the vehicle’s route guidance control because the position error fluctuates as the vehicle’s speed increases. We devised a time-division position correction method that calculates the error using the absolute position of the magnetic marker, which is estimated when the magnetic marker is detected, along with the absolute position information from the magnetic marker database. Instead of correcting the error at once when the position and heading errors are corrected, the correction is performed by dividing the errors multiple times until the next magnetic marker is detected. This prevents sudden discontinuity of the vehicle position information, and the calculated correction amount is used without loss to obtain stable and continuous position information. We conducted driving tests to compare the performances of the proposed algorithm and conventional methods. We compared the continuity of the position information and the mean error and confirmed the superiority of the proposed method in terms of these aspects.

Experimental Study on Application of DGPS-based Position Information to Automatic Driving Control

2001 ◽  
Vol 13 (4) ◽  
pp. 340-351 ◽  
Author(s):  
Manabu Omae ◽  
◽  
Takehiko Fujioka ◽  
Keyword(s):  
Control System ◽  
Experimental Studies ◽  
Time Estimation ◽  
Position Measurement ◽  
Absolute Position ◽  
Position Information ◽  
Automatic Driving ◽  
Automatic Steering ◽  
The Absolute ◽  
Estimation And Control

Experimental studies are conducted for investigating the possibility of automatic driving control systems based on absolute position information. Implementation of such control system requires a methodology of measuring the absolute position, and a control algorithm. In this paper, an accurate and real-time estimation of the absolute position by use of DGPS (Differential Global Positioning System) and sensors on a controlled vehicle is proposed. Automatic steering controller, automatic evasive controller, and a method of relative position measurement of neighboring vehicles are also proposed as application of position information to automatic driving control. Experiments are conducted using sedan-type vehicles. Experimental results validate the proposed estimation and control system, and provide the perspective of enhancing the automatic driving control system by use of the absolute position information.

Development of a simultaneous imaging system to measure the optical and gamma ray images of Ir-192 source for high-dose-rate brachytherapy

2021 ◽  
Vol 16 (12) ◽  
pp. T12005
Author(s):  
J. Nagata ◽  
S. Yamamoto ◽  
Y. Noguchi ◽  
T. Nakaya ◽  
K. Okudaira ◽  
...  
Keyword(s):  
Dose Rate ◽  
Spatial Resolution ◽  
Gamma Camera ◽  
Gamma Ray ◽  
Imaging System ◽  
High Dose Rate ◽  
High Dose ◽  
Cmos Camera ◽  
Absolute Position ◽  
The Absolute

Abstract In high-dose-rate (HDR) brachytherapy, verification of the Ir-192 source's position during treatment is needed because such a source is extremely radioactive. One of the methods used to measure the source position is based on imaging the gamma rays from the source, but the absolute position in a patient cannot be confirmed. To confirm the absolute position, it is necessary to acquire an optical image in addition to the gamma ray image at the same time as well as the same position. To simultaneously image the gamma ray and optical images, we developed an imaging system composed of a low-sensitivity, high-resolution gamma camera integrated with a CMOS camera. The gamma camera has a 1-mm-thick cerium-doped yttrium aluminum perovskite (YAIO3: YAP(Ce)) scintillator plate optically coupled to a position-sensitive photomultiplier (PSPMT), and a 0.1-mm-diameter pinhole collimator was mounted in front of the camera to improve spatial resolution and reduce sensitivity. We employed the concept of a periscope by placing two mirrors tilted at 45 degrees facing each other in front of the gamma camera to image the same field of view (FOV) for the gamma camera and the CMOS camera. The spatial resolution of the imaging system without the mirrors at 100 mm from the Ir-192 source was 3.2 mm FWHM, and the sensitivity was 0.283 cps/MBq. There was almost no performance degradation observed when the mirrors were positioned in front of the gamma camera. The developed system could measure the Ir-192 source positions in optical and gamma ray images. We conclude that the developed imaging system has the potential to measure the absolute position of an Ir-192 source in real-time clinical measurements.

scholarly journals Glacial Geodetic Contributions to the Mass Balance and Dynamics of Ice Shelves

1988 ◽  
Vol 11 ◽  
pp. 89-94 ◽  
Author(s):  
D. Möller ◽  
B. Ritter
Keyword(s):  
Mass Balance ◽  
Collocation Method ◽  
Ice Shelf ◽  
Absolute Position ◽  
Ice Flow ◽  
Ice Shelves ◽  
Rotation Rates ◽  
Deformation Parameters ◽  
Satellite Methods ◽  
The Absolute

The glacial geodetic contribution to the mass balance and dynamics of ice shelves includes repeated determinations of the absolute position (ϕ,λ,Η) of selected points (using satellite methods), the establishment of relative positions (y,x,Δh) in deformation figures, and height measurements. The results are used to establish ice-flow velocities and directions, strain and rotation rates, and changes in height. Modelling of deformation parameters at a few points over a large ice shelf is made possible by the collocation method. Results of these observations and analysis of Ekström Ice Shelf for the period 1979–87 are reported.

scholarly journals VLBA H2O and SiO maser observations in the pPN OH 231.8+4.2

2007 ◽  
Vol 3 (S242) ◽  
pp. 338-339
Author(s):  
J.-F. Desmurs ◽  
C. Sánchez Contreras ◽  
V. Bujarrabal ◽  
J. Alcolea ◽  
F. Colomer
Keyword(s):  
High Resolution ◽  
Water Vapour ◽  
Planetary Nebulae ◽  
Absolute Position ◽  
Long Baseline ◽  
The Absolute ◽  
Very Long Baseline Array

AbstractWe report high-resolution observations of H2O, 61,6−52,3 and 28SiO v=2, J=1-0 maser emissions obtained with the Very Long Baseline Array in the bipolar pre-planetary nebulae OH 231.8+4.2 (see Desmurs et al., 2007). A phase referencing technique was used to recover the absolute position of both emissions. We detected two groups of water vapour emission oriented nearly north-south. SiO masers are tentatively found to be placed between the two H2O maser emitting regions.

scholarly journals A construction-based cross-linguistic analysis of V2 word order

2011 ◽  
Author(s):  
Andrew C. Wetta
Keyword(s):  
Word Order ◽  
Linguistic Analysis ◽  
Verb Second ◽  
Absolute Position ◽  
Topological Domains ◽  
The Absolute

Verb second (V2) word order is determined by considering the absolute position of clausal constituents. Previous accounts of such word order in HPSG have been developed for individual V2 languages (predominantly German) but are often not cross-linguistically applicable. I propose a set of generalized mechanisms in linearization-based SBCG which accounts for cross-linguistic V2 data by use of: (1) a simple two-valued feature rather than many-typed topological domains, (2) domain compaction, and (3) constructionally-determined domain positions. Not only does this analysis account for V2 placement, but it can also model verb third (V3) placement and other positionally-stipulated word orders.

scholarly journals Spread of SARS-CoV-2 Genomes on Genomic Index Maps of Hierarchy

2020 ◽  
Author(s):  
Jeffrey Zheng ◽  
Yang Zhou ◽  
Minghan Zhu ◽  
Mu Qiao ◽  
Zhigang Zhang
Keyword(s):  
Specific Region ◽  
Genomic Information ◽  
Absolute Position ◽  
Visual Effects ◽  
Phylogenic Tree ◽  
Position Information ◽  
Hierarchical Framework ◽  
Visual Tool ◽  
Index Maps ◽  
Visual Technologies

Abstract Using visual technologies, COVID-19 patients worldwide are conveniently described by position information to collect sample, modern GIS maps are useful to show influenced flows and numbers of patients on various regions of a pendamic. From an analysis viewpoint, it is more interesting to organize genomic information into a phylogenic tree with multiple branches and leaves in representations. Clusters of genomes are organized as phylogenic trees to represent intrinsic information of genomes. However, there are structural difficulties to project phylogenic information into 2D distributions as GIS maps naturally.In this paper, a novel projection is proposed to arrange SARS-CoV-2 genomes by genomic indexes to make a structural organization as 2D GIS maps. For any genome, there is a unique invariant under the certain conditions to provide an absolute position on a specific region. In this hierarchical framework, it is possible to use a visual tool to represent any selected region for clustering genomes on refined effects. Visual effects are complementarily provided with Phylogenic tree technology. Sample regions and various projections show spread effects of five thousand SARS-CoV-2 genomes in 72 countries and special four countries are selected on genomic index maps.

scholarly journals ANAK DI BAWAH UMUR SEBAGAI WALI NIKAH: SUATU KONSEKUENSI HUKUM DAN URGENSITAS URUTAN PERWALIAN

2020 ◽  
Vol 2 (2) ◽  
pp. 140-153
Author(s):  
Hasyim Harun
Keyword(s):  
Literature Review ◽  
Absolute Position ◽  
Normative Analysis ◽  
Legal Guardians ◽  
Legal Implications ◽  
The Absolute ◽  
Legal Implication ◽  
Legal Consequences

AbstractThis research examines the position of underage children who act as guardians in marriage, by looking at the legal implications and urgency of guardianship hierarchy in fiqh munakahat. The purpose of this study is to strengthen the normative analysis of the absolute position of a guardian in marriage. The method in this research is literature review, with a normative theological approach and descriptive analysis.The findings of this study show that children who are not old enough are not legal guardians in marriage. The legal implication can affect the validity of the marriage. In the urgency of guardianship, underage children may be in the closest position in the guardianship hierarchy, but children who are underage do not fulfill the absolute requirements of a guardian in marriage, so their guardianship rights are automatically terminated.Keywords: Children; Guardian of marriage; Legal Consequences; Trusteeship order.

scholarly journals 3D-Printed All-Dielectric Electromagnetic Encoders with Synchronous Reading for Measuring Displacements and Velocities

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4837
Author(s):  
Cristian Herrojo ◽  
Ferran Paredes ◽  
Ferran Martín
Keyword(s):  
Dielectric Material ◽  
Low Cost ◽  
Good Alternative ◽  
The Other ◽  
Clock Signal ◽  
Aging Effects ◽  
Absolute Position ◽  
De Bruijn Sequence ◽  
3D Printed ◽  
The Absolute

In this paper, 3D-printed electromagnetic (or microwave) encoders with synchronous reading based on permittivity contrast, and devoted to the measurement of displacements and velocities, are reported for the first time. The considered encoders are based on two chains of linearly shaped apertures made on a 3D-printed high-permittivity dielectric material. One such aperture chain contains the identification (ID) code, whereas the other chain provides the clock signal. Synchronous reading is necessary in order to determine the absolute position if the velocity between the encoder and the sensitive part of the reader is not constant. Such absolute position can be determined as long as the whole encoder is encoded with the so-called de Bruijn sequence. For encoder reading, a splitter/combiner structure with each branch loaded with a series gap and a slot resonator (each one tuned to a different frequency) is considered. Such a structure is able to detect the presence of the apertures when the encoder is displaced, at short distance, over the slots. Thus, by injecting two harmonic signals, conveniently tuned, at the input port of the splitter/combiner structure, two amplitude modulated (AM) signals are generated by tag motion at the output port of the sensitive part of the reader. One of the AM envelope functions provides the absolute position, whereas the other one provides the clock signal and the velocity of the encoder. These synchronous 3D-printed all-dielectric encoders based on permittivity contrast are a good alternative to microwave encoders based on metallic inclusions in those applications where low cost as well as major robustness against mechanical wearing and aging effects are the main concerns.

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