305,194 research outputs found
GOCI - II User Requirements
No full textAfter the successful launch and operation of Geostationary Ocean Color Imager(GOCI-I), necessityof succession of GOCI mission, ocean environment monitoring with ocean color, is highly increasinginto international ocean color remote sensing users as well as domestic users in Korea. GOCI, the world’s first ocean color observation satellite in geostationary orbit, was launched on June 2010. As a successor of GOCI-I mission, development of GOCI-II is planned to be started in 2012 andlaunched in 2018. The mission and user requirements of GOCI-II are defined by Korea Ocean Research& Development Institute (KORDI) and international GOCI PI(Principal Investigator)s. GOCI-II will beable to monitor the nearly full Earth disk area centered at 128.2˚E, and to acquire the local area(current GOCI coverage area or user definable area) image with 250m spatial resolution. It is two time better resolution than GOCI. These enhanced features will enable the monitoring and research of long-term ocean environment change with better image quality. The GSD requirement of GOCI- II with 250m×250m at the center of local area was not able to be realized at the development period of GOCI, although many ocean color remote sensing users had continuously requested 250m GSD requirement. Additional 4 spectral bands and a dedicated panchromatic band for nighttime oservation will be added to improve the accuracy of data ping users as well as domestic users in Korea. GOCI, the world’s first ocean color observation satellite in geostationary orbit, was launched on June 2010. As a successor of GOCI-I mission, development of GOCI-II is planned to be started in 2012 andlaunched in 2018. The mission and user requirements of GOCI-II are defined by Korea Ocean Research& Development Institute (KORDI) and international GOCI PI(Principal Investigator)s. GOCI-II will beable to monitor the nearly full Earth disk area centered at 128.2˚E, and to acquire the local area(c1
The diminishment of civil and political rights during the Covid-19 pandemic. A 'paved road' for speculative schemes on city public realm. Case study Tirana.
No full textThere is a direct discoverable linkage, between the diminishing of civic and political rights, and the dilatation destruction of the public realm by city rebuilding and redevelopment. On March 2020, with the Covid-19 outbreak aligned with the pandemic restrictions that entered in power, organized forms of protest and any civic actions were prohibited by law. During this period of time the city increased its density by developing hundreds of new construction sites, most of which at the outlay of public realm. Public space, in absence of citizen’s presence turned into a ‘facility’ for the construction industry, while the city resembles to a giant construction site. Decision-making on city planning by public institutions is accompanied with lack of transparency, by impinging also the right to information. This paper aims to expose the connection between arbitrary decision-making on the city and the violation of the right to information and the right to spaces of representations
Evaluation of antifungal activity of origanum vulgare and rosmarinus officinalis essential oil before and after inclusion in β-cyclodextrine
No full textObjective: The aim of this study is to evaluate and compare the antifungal activity of essential oil of Origanum vulgare and Rosmarinus officinalis collected in north region of Albania, and how is it modified by microencapsulation with β-cyclodextrin (β-CD). Methods: Chemical composition of both isolated essential oils was determined by gas chromatography/mass spectrometry. The disc diffusion method was used to screen the antifungal activities of essential oils, before and after microencapsulation, against following dermatophytes: M. gypseum, M. canis, A. cajetani, T. violaceum, T. mentagrophytes, E. floccosum,T. rubrum, T. tonsurans and phytopatogens B. cinerea and P. oryzae. Results: The major identified compounds for Rosmarinus officinalis and Origanum vulgare essential oils, by GC/MS analyses, were respectively: 1, 8cineol, camphor, verbenone, borneol and carvacrol, thymol for O. vulgare essential oil. Maximum antifungal activity of essential oil of O. vulgare was observed against T. tonsurans, T. violaceum, T. floccosum,T. mentagrophytes. Meanwhile the essential oil of R. officinalis exhibits a moderate antifungal activity against T. violaceum. The essential oils demonstrated higher inhibition zones after microencapsulation in β-cylcodextrine. Conclusion: From the results obtained we can conclude as follows: 1. Antifungal activity of Origanum vulgare essential oil is higher compare to the antifungal activity of Rosmarinus officinalis ones due to high content of carvacrol in Origanum vulgare essential oil. 2. Microencapsulation does not change the antifungal activity of both essential oils; this should consent to achieve the optimal antifungal activity with minimum side effects of essential oil, and improved stability upon storage due to benefits of microencapsulation in β-cyclodextrine. Moreover, after encapsulation improved activity were observed
GOCI-II ON-ORBIT CALIBRATION PLAN: LESSONS FROM GOCI
No full textAfter the successful launch and operation of Geostationary Ocean Color Imager (GOCI), the first pathfinder of ocean color remote sensing in geostationary orbit from 2010, is in nominal operation phase around six years since its launch in June 2010. Regarding the scheduled lifetime of 7.7 years, successive mission of GOCI with the new generation of instrument design is highly requested by the international ocean color remote sensing users as well as domestic users in Korea.Development project of GOCI-II has been started in 2012 and currently, the launch is planned in 2019. The mission and user requirements of GOCI-II are defined by Korea Institute of Ocean Science and Technology (KIOST) and international GOCI PI (Principal Investigators). As a second generation of FR (Filter Radiometer) type ocean color imager in geostationary orbit, GOCI-II, will be able to monitor the nearly full Earth disk area at the same orbital location of GOCI (128.2˚E longitude in geostationary orbit), and to acquire the local area(observation region can be freely definable by user) image with 250m GSD and 12 spectral bands from visible to NIR (370~885nm) and one additional panchromatic band (402~885nm). It means 4 times more number of pixels and 50% more spectral bands than GOCI (250m spatial resolution at nadir. These enhanced features will be enable to enhance the monitoring and research capability to the level of climate data recordne 2010. Regarding the scheduled lifetime of 7.7 years, successive mission of GOCI with the new generation of instrument design is highly requested by the international ocean color remote sensing users as well as domestic users in Korea.Development project of GOCI-II has been started in 2012 and currently, the launch is planned in 2019. The mission and user requirements of GOCI-II are defined by Korea Institute of Ocean Science and Technology (KIOST) and international GOCI PI (Principal Investigators). As a second generation of FR (Filter Radiometer) type ocean color imager in geostationary orbit, GOCI-II, will be able to monitor the nearly full Earth disk area at the same orbital location of GOCI (128.2˚E longitude in geostationary orbit), and to acquire the local area(observation region can be freely definable by user) image with 250m GSD and 12 spectral bands from visible to NIR (370~885nm) and one additional panchromatic band (402~885nm). It means 4 times more number of pixels and 50% more spectral bands than GOCI (250m spatial resolution at nadir. These enhanced features will be enable to enhance the monitoring and research capability to the level of climate data record1
GOCI Overall Status
No full textGOCI(Geostationary Ocean Color Imager), one of three main payloads of COMS(Communication, Ocean and Meteorological Satellite), is the worlds first ocean color observation imager in geostationary orbit. It was successfully launched at Kourou Space Center in French Guiana by Ariane 5 ECA Launch Vehicle in 26 June 2010(UTC). In order to detect, monitor and predict the short-term biophysical phenomena, GOCI has six visible bands with band center 412nm, 443nm, 490nm, 555nm, 660nm and 680nm, and two near-infrared bands with band center 745nm and 865nm for the purpose of atmospheric correction. Pixel Sampling Resolution of GOCI is about 500m at the center of the GOCI coverage area. The size of GOCI coverage area is the 2,500km×2,500km square, and the location of the coverage center is at 36˚N and 130˚E. GOCI coverage area is composed of 16(4x4) slot images. Because GOCI equips 2D CMOS with 1413 x 1430 effective pixel array, GOCI IFOV corresponds to the FOV of GOCI slot area. GOCI also has been developed to observe the GOCI coverage area by every hour and planned to observe and transmit 8 GOCI coverage area images per day. The mission life time of the GOCI is about 7 years after In-Orbit Test(IOT).GOCI user requirements was derived from Korea Ocean Research & Development Institute(KORDI), and GOCI was co-developed by Korea Aerospace Research Institute(KARI) and EADS Astrium in France followed by the KORDIs user requirementsAt this moment, GOCI is under the In-Orbit Test operation. GOCI functional test to verify the operability of GOCI was successfully accomplished, and GOCI radiometric and geometric tests are on-going. In parallel, operation test and verification of GOCI ground processing system equipped in KOSC are on-going without any major issue. In this paper, we present the overall status of GOCI including preliminary results of GOCI In-Orbit Test.1
FIVE-YEAR OPERATION OF GOCI IN-ORBIT RADIOMETRIC CALIBRATION
No full textThe world’s first ocean color remote sensing mission in geostationary orbit, GOCI (Geostationary Ocean Color Imager) aboard on COMS (Communication, Ocean and Meteorological Satellite), is in the status of successful operation over five years since its launch in June 2010. For the practical development in terms of budget and schedule, GOCI implements 2D CMOS FPA (Focal Plane Array) with 2 million pixels (1413 x 1430), which enables image staring capture method with 700km x 700km IFOV (Instantaneous Field of View) and 500m GSD (Ground Sampling Distance) over the center of the coverage area (130˚E, 36˚N), and it corresponds to about 380m GSD over the nadir. GOCI can observe Korea, Japan, and east coast region of China with 4 x 4 slot image acquisitions. One slot image of GOCI is equivalent to IFOV, and size of coverage area with 4 x 4 slot images is 2,500km x 2,500km including overlapped area among adjoined slot images. GOCI equips 8 spectral bands from visible to NIR (402nm ~885nm). In visible wavelength region from 402nm to 685nm, 6 spectral bands are implemented on GOCI with the bandwidth of 20nm (for B1 ~B5) or 10nm (for B6, central wavelength at 680nm). Two spectral bands located in NIR wavelength region with band center at 745nm and 865nm are mainly used for the atmospheric correction.Solar calibration, the method to use Sun as calibration light source, is in-orbit calibration method of GOCI. On-board rs since its launch in June 2010. For the practical development in terms of budget and schedule, GOCI implements 2D CMOS FPA (Focal Plane Array) with 2 million pixels (1413 x 1430), which enables image staring capture method with 700km x 700km IFOV (Instantaneous Field of View) and 500m GSD (Ground Sampling Distance) over the center of the coverage area (130˚E, 36˚N), and it corresponds to about 380m GSD over the nadir. GOCI can observe Korea, Japan, and east coast region of China with 4 x 4 slot image acquisitions. One slot image of GOCI is equivalent to IFOV, and size of coverage area with 4 x 4 slot images is 2,500km x 2,500km including overlapped area among adjoined slot images. GOCI equips 8 spectral bands from visible to NIR (402nm ~885nm). In visible wavelength region from 402nm to 685nm, 6 spectral bands are implemented on GOCI with the bandwidth of 20nm (for B1 ~B5) or 10nm (for B6, central wavelength at 680nm). Two spectral bands located in NIR wavelength region with band center at 745nm and 865nm are mainly used for the atmospheric correction.Solar calibration, the method to use Sun as calibration light source, is in-orbit calibration method of GOCI. On-board1
GOCI in-orbit radiometric calibration status after four-year operation
No full textThe first spaceborne imager for ocean color remote sensing in Geostationary
Earth Orbit (GEO), GOCI (Geostationary Ocean Color Imager)/COMS
(Communication, Ocean and Meteorological Satellite), is successfully
operated over the four years since its launch in June 2010. In order to fulfill
the ocean color monitoring mission in geostationary orbit, GOCI implements
2D CMOS FPA (Focal Plane Array) with 2 million pixels, which enables
staring capture method with 700km x 700km IFOV (Instantaneous Field
of View) and 500m GSD (Ground Sampling Distance) over the center of
the coverage area (130˚E, 36˚N) which corresponds to 380m GSD over the
nadir. GOCI can observe Korea, Japan, and coastal region of China with 4 x
4 slot image acquisitions. One slot image of GOCI is equivalent to IFOV, and
size of coverage area with 4 x 4 slot images is 2,500km x 2,500km including
overlap area among adjacent slot images. GOCI equips 8 spectral bands.
In visible wavelength region from 402nm to 685nm, 6 spectral bands are
implemented on GOCI with the bandwidth of 20nm (for B1 ~B5) or 10nm
(for B6, central wavelength at 680nm). Two spectral bands located in NIR
wavelength region with band center at 745nm and 865nm are mainly used
for the atmospheric correction.
In-orbit calibration method of GOCI is solar calibration using onboard Solar
Diffuser (SD) and Diffuser Aging Monitoring Device (DAMD) equipped in
the Shutter Wheel since its launch in June 2010. In order to fulfill
the ocean color monitoring mission in geostationary orbit, GOCI implements
2D CMOS FPA (Focal Plane Array) with 2 million pixels, which enables
staring capture method with 700km x 700km IFOV (Instantaneous Field
of View) and 500m GSD (Ground Sampling Distance) over the center of
the coverage area (130˚E, 36˚N) which corresponds to 380m GSD over the
nadir. GOCI can observe Korea, Japan, and coastal region of China with 4 x
4 slot image acquisitions. One slot image of GOCI is equivalent to IFOV, and
size of coverage area with 4 x 4 slot images is 2,500km x 2,500km including
overlap area among adjacent slot images. GOCI equips 8 spectral bands.
In visible wavelength region from 402nm to 685nm, 6 spectral bands are
implemented on GOCI with the bandwidth of 20nm (for B1 ~B5) or 10nm
(for B6, central wavelength at 680nm). Two spectral bands located in NIR
wavelength region with band center at 745nm and 865nm are mainly used
for the atmospheric correction.
In-orbit calibration method of GOCI is solar calibration using onboard Solar
Diffuser (SD) and Diffuser Aging Monitoring Device (DAMD) equipped in
the Shutter Wheel1
GOCI Level-2 Processing Improvements and Cloud Motion Analysis
No full textThe Ocean Biology Processing Group has been working with the Korean Institute of Ocean Science and Technology (KIOST) to process geosynchronous ocean color data from the GOCI (Geostationary Ocean Color Instrument) aboard the COMS (Communications, Ocean and Meteorological Satellite). The level-2 processing program, l2gen has GOCI processing as an option. Improvements made to that processing are discussed here as well as a discussion about cloud motion effects
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Development of the next geostationary ocean color imager, GOCI-II
No full textImager (GOCI), the first pathfinder of ocean color remote sensing in
geostationary orbit from 2010, necessity of succession of GOCI mission after
the expected lifetime by 2018, is gradually increasing into the international
ocean color remote sensing users as well as domestic users in Korea.
As a successor of GOCI, development of GOCI-II has been started in 2012
with a planned launch in 2018. The mission and user requirements of
GOCI-II are defined by Korea Institute of Ocean Science and Technology
(KIOST) and international GOCI PI (Principal Investigators). GOCI-II will
be able to monitor the nearly full Earth disk area on 128.2˚E longitude in
geostationary orbit, and to acquire the local area(observation region can be
freely definable by user) image with 250m spatial resolution at nadir with 12
spectral bands from visible to NIR (370~885nm). These enhanced features
will enable the monitoring and research of long-term ocean environment
change with better image quality. Additional 4 spectral bands are added to
improve the accuracy of data products such as chlorophyll concentration,
total suspended sediments, dissolved organic matters, enhancement
of atmospheric correction, and to have a novel capability such as PFT
(Phytoplankton Functional Type) which enables to discriminate harmful
algae bloom. Newly implemented panchromatic band with 402~885nm
bandwidth is expected to enable star imaging for themote sensing users as well as domestic users in Korea.
As a successor of GOCI, development of GOCI-II has been started in 2012
with a planned launch in 2018. The mission and user requirements of
GOCI-II are defined by Korea Institute of Ocean Science and Technology
(KIOST) and international GOCI PI (Principal Investigators). GOCI-II will
be able to monitor the nearly full Earth disk area on 128.2˚E longitude in
geostationary orbit, and to acquire the local area(observation region can be
freely definable by user) image with 250m spatial resolution at nadir with 12
spectral bands from visible to NIR (370~885nm). These enhanced features
will enable the monitoring and research of long-term ocean environment
change with better image quality. Additional 4 spectral bands are added to
improve the accuracy of data products such as chlorophyll concentration,
total suspended sediments, dissolved organic matters, enhancement
of atmospheric correction, and to have a novel capability such as PFT
(Phytoplankton Functional Type) which enables to discriminate harmful
algae bloom. Newly implemented panchromatic band with 402~885nm
bandwidth is expected to enable star imaging for th1
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