Log in

Relevant bibliographies by topics / Mersi / Journal articles

To see the other types of publications on this topic, follow the link: Mersi.

Journal articles on the topic 'Mersi'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Mersi.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Liu, Hai Lei, Li Sheng Xu, Ji Lie Ding, Ba Sang, and Xiao Bo Deng. "An Atmospheric Correction Method for Medium Resolution Spectral Imager Thermal IR Soundings." Key Engineering Materials 500 (January 2012): 397–402. http://dx.doi.org/10.4028/www.scientific.net/kem.500.397.

Full text

Abstract:

Based on the thermal radiative transfer equation (RTE), a new atmospheric correction method named Single Band Water Vapor Dependent (SBWVD) method is developed for land surface temperature (LST) retrieval for the FY-3A Medium Resolution Spectral Imager (MERSI) with only one thermal infrared (TIR) channel. Assuming that the surface emissivity is known, water vapor content (WVC) is the only one parameter for input to the SBWVD algorithm to retrieve LST from MERSI TIR observations. FY-3A MERSI Level 2 water vapor product is employed to evaluate the performance of the proposed method, and a 2-D data interpolation procedure is applied in order to match the MERSI L1B data in spatial resolution. Some tests, including numerical simulation for MERSI sensor and the synchronous measurements of MERSI and the radiosondes for the radiative calibration of the FY-3A tests in Qinghai Lake, have been carried out for the proposed algorithm, respectively. The results show that the difference between the retrieved LST and the in-situ measurements is less than 0.6 K for most situations. The comparison with the MODIS LST products (V5) shows that the root mean square error (RMSE) is under 0.72 K. Thus, our proposed new algorithm is applicable for the atmospheric correction and LST retrieval using MERSI TIR channel observations.

APA, Harvard, Vancouver, ISO, and other styles

2

Frieyadie, Frieyadie, Nurajijah Nurajijah, Fachri Amsury, Daning Nur Sulistyowati, and Siti Fauziah. "Workshop Pemanfaatan Market Place Dalam Menunjang Pemasaran Produk Pada Komunitas Mersi Fans Club Dimasa Pandemik Covid-19." Jurnal AbdiMas Nusa Mandiri 2, no. 2 (2020): 43–48. http://dx.doi.org/10.33480/abdimas.v2i2.1923.

Full text

Abstract:

PT Radio Swara Mersidiona atau yang lebih dikenal dengan nama Radio MeRsi yang dipercaya dalam dunia penyiaran, selalu memberikan kepuasan bagi pendengar. Sejak tahun 1971 radio mersi tetap konsisten dalam musik yang disugukan yaitu dangdut sehingga memiliki banyak penggemar setia sehingga terbentuklah komunitas yang bernama Mersi Fans Club (MFC). Permasalahan yang dihadapi oleh komunitas Mersi Fans Club (MFC) diantaranya para anggota Komunitas Mersi Fans Club l belum terlalu memahami bagaimana Pemanfaatan Market Place Dalam Menunjang Pemasaran Produk. Belum dapat mengimplementasikan pemasaran produk mereka pada Market Place. Juga dimasa pademik Covid-19 ini, kegiatan tatap muka juga menjadi kendala melanggar protokol kesehatan. Sebagai solusi kegiatan pengabdian masyarakat ini dengan mengadakan kegiatan Workshop secara daring dengan menggunakan fasilitas Zoom meeting. Hasil dari kegiatan ini, diharapkan dapat memahami dengan terus menurus dicoba dan mempraktekan yang sudah didapatkan, sekaligus dengan membuka komunkasi dengan WA Group.

APA, Harvard, Vancouver, ISO, and other styles

3

Kurniawan, Irfan Septia, Nur Hilal, and Tri Cahyono. "STUDI PENGELOLAAN SAMPAH PADA KELOMPOK SWADAYA MASYARAKAT “ADIPATI MERSI” KABUPATEN BANYUMAS." Buletin Keslingmas 38, no. 4 (2019): 316–27. http://dx.doi.org/10.31983/keslingmas.v38i4.5496.

Full text

Abstract:

Masalah sampah di Indonesia merupakan masalah yang rumit karena kurangnya pengertian masyarakat terhadap akibat-akibat yang dapat ditimbulkan oleh sampah. Faktor yang menyebabkan permasalahan sampah di Indonesia semakin rumit adalah meningkatnya taraf hidup masyarakat yang tidak disertai dengan keselarasan pengetahuan tentang persampahan dan juga partisipasi masyarakat yang kurang untuk memelihara kebersihan dan membuang sampah pada tempatnya .Metode yang digunakan peneliti yaitu observasi dan pengukuran. Penelitian ini menggunakan metode observasi dan wawancara dimana penulis ingin mendapatkan informasi mengenai pengelolaan sampah p ada Kelompok Swadaya Masyarakat (KSM) Adipati Mersi di Kelurahan Mersi Kecamatan Purwokerto Timur Kabupaten Banyumas.Hasil penelitian diperoleh bahwa pengelolaan sampah di KSM Adipati Mersi Kelurahan Mersi pada variabel penimbulan sampah skor 56 %, variabel pewadahan mendapat skor 84%, pengumpulan sampah mendapat skor 57,1%, pengangkutansampah dengan skor total 100%, pengolahan dan pemanfaatan sampah dengan skor 100%, dan variabel pembuangan akhir sampah mendapat skor 85,7%.Kesimpulan dan saran yang dapat penulis berikan tentang studi pengelolaan sampah di KSM Adipati Kelurahan Mersi Purwokerto Timur Kabupaten Banyumas tahun 2018 mendapat kriteria baik. Saran kepada KSM Adipati Kelurahan Mersi adalah hendaknya sarana dan prasarana serta penerapan peraturan tentang pengelolaan sampah yang tegas sangat diperlukan.

APA, Harvard, Vancouver, ISO, and other styles

4

Xiang, Daxiang, Liangming Liu, Qiao Wang, Na Yang, and Tao Han. "Evaluation of Data Quality and Drought Monitoring Capability of FY-3A MERSI Data." Advances in Artificial Intelligence 2010 (February 23, 2010): 1–10. http://dx.doi.org/10.1155/2010/124816.

Full text

Abstract:

FY-3A is the second Chinese Polar Orbital Meteorological Satellite with global, three-dimensional, quantitative, and multispectral capabilities. Its missions include monitoring global disasters and environment changes. This study describes some basic parameters and major technical indicators of the FY-3A and evaluates data quality and drought monitoring capability of the Medium-Resolution Imager (MERSI) onboard the FY-3A. Data obtained with the MERSI was compared with that of the MODerate-resolution Imaging Spectroradiometer (MODIS), imaged at the same time period and geographic zone. In addition, the Temperature/Vegetation Drought Index (TVDI), a highly accurate and stable monitoring model, was used to monitor drought condition with MERSI and MODIS sensors. It is found in the study that the relative accuracy of data, obtained with these two devices, was consistent with the acceptable overall accuracy of 93.8. Furthermore, spatial resolution of MERSI is superior as compared to that of MODIS. Therefore, FY-3A MERSI can serve a reliable and new data source for drought monitoring.

APA, Harvard, Vancouver, ISO, and other styles

5

Wang, Dongdong, Shunlin Liang, Tao He, Yunfeng Cao, and Bo Jiang. "Surface Shortwave Net Radiation Estimation from FengYun-3 MERSI Data." Remote Sensing 7, no. 5 (2015): 6224–39. http://dx.doi.org/10.3390/rs70506224.

Full text

Abstract:

The Medium-Resolution Spectral Imager (MERSI) is one of the major payloads of China’s second-generation polar-orbiting meteorological satellite, FengYun-3 (FY-3), and it is similar to the Moderate-Resolution Imaging Spectroradiometer (MODIS). The MERSI data are suitable for mapping terrestrial, atmospheric and oceanographic variables at continental to global scales. This study presents a direct-estimation method to retrieve surface shortwave net radiation (SSNR) data from MERSI top-of-atmosphere (TOA) reflectance and cloud mask products. This study is the first attempt to use the MERSI to retrieve SSNR data. Several critical issues concerning remote sensing of SSNR were investigated, including scale effects in validating SSNR data, impacts of the MERSI calibration update on the estimation of SSNR and the dependency of the retrieval accuracy of SSNR data on view geometry. We also incorporated data from twin MODIS sensors to assess how time and the number of satellite overpasses affect the retrieval of SSNR data. Validation against one-year data over seven Surface Radiation Budget Network (SURFRAD) stations showed that the presented algorithm estimated daily SSNR at the original resolution of the MERSI with a root mean square error (RMSE) of 41.9 W/m2 and a bias of −1.6 W/m2. Aggregated to a spatial resolution of 161 km, the RMSE of MERSI retrievals can be reduced by approximately 10 W/m2. Combined with MODIS data, the RMSE of daily SSNR estimation can be further reduced to 22.2 W/m2. Compared with that of daily SSNR, estimation of monthly SSNR is less affected by the number of satellite overpasses per day. The RMSE of monthly SSNR from a single MERSI sensor is as small as 13.5 W/m2.

APA, Harvard, Vancouver, ISO, and other styles

6

Wang, Han, Kebiao Mao, Fengyun Mu, et al. "A Split Window Algorithm for Retrieving Land Surface Temperature from FY-3D MERSI-2 Data." Remote Sensing 11, no. 18 (2019): 2083. http://dx.doi.org/10.3390/rs11182083.

Full text

Abstract:

The thermal infrared (TIR) data from the Medium Resolution Spectral Imager II (MERSI-2) on the Chinese meteorological satellite FY-3D have high spatiotemporal resolution. Although the MERSI-2 land surface temperature (LST) products have good application prospects, there are some deviations in the TIR band radiance from MERSI-2. To accurately retrieve LSTs from MERSI-2, a method based on a cross-calibration model and split window (SW) algorithm is proposed. The method is divided into two parts: cross-calibration and LST retrieval. First, the MODTRAN program is used to simulate the radiation transfer process to obtain MERSI-2 and Moderate Resolution Imaging Spectroradiometer (MODIS) simulation data, establish a cross-calibration model, and then calculate the actual brightness temperature (BT) of the MERSI-2 image. Second, according to the characteristics of the near-infrared (NIR) bands, the atmospheric water vapor content (WVC) is retrieved, and the atmospheric transmittance is calculated. The land surface emissivity is estimated by the NDVI-based threshold method, which ensures that both parameters (transmittance and emissivity) can be acquired simultaneously. The validation shows the following: 1) The average accuracy of our algorithm is 0.42 K when using simulation data; 2) the relative error of our algorithm is 1.37 K when compared with the MODIS LST product (MYD11A1); 3) when compared with ground-measured data, the accuracy of our algorithm is 1.23 K. Sensitivity analysis shows that the SW algorithm is not sensitive to the two main parameters (WVC and emissivity), which also proves that the estimation of LST from MERSI-2 data is feasible. In general, our algorithm exhibits good accuracy and applicability, but it still requires further improvement.

APA, Harvard, Vancouver, ISO, and other styles

7

Zhao, Dexin, Lin Zhu, Hongfu Sun, Jun Li, and Weishi Wang. "Fengyun-3D/MERSI-II Cloud Thermodynamic Phase Determination Using a Machine-Learning Approach." Remote Sensing 13, no. 12 (2021): 2251. http://dx.doi.org/10.3390/rs13122251.

Full text

Abstract:

Global cloud thermodynamic phase (CP) is normally derived from polar-orbiting satellite imaging data with high spatial resolution. However, constraining conditions and empirical thresholds used in the MODIS (Moderate Resolution Imaging Spectroradiometer) CP algorithm are closely associated with spectral properties of the MODIS infrared (IR) spectral bands, with obvious deviations and incompatibility induced when the algorithm is applied to data from other similar space-based sensors. To reduce the algorithm dependence on spectral properties and empirical thresholds for CP retrieval, a machine learning (ML)-based methodology was developed for retrieving CP data from China’s new-generation polar-orbiting satellite, FY-3D/MERSI-II (Fengyun-3D/Moderate Resolution Spectral Imager-II). Five machine learning algorithms were used, namely, k-nearest-neighbor (KNN), support vector machine (SVM), random forest (RF), Stacking and gradient boosting decision tree (GBDT). The RF algorithm gave the best performance. One year of EOS (Earth Observation System) MODIS CP products (July 2018 to June 2019) were used as reference labels to train the relationship between MODIS CP (MYD06 IR) and six IR bands of MERSI-II. CALIOP (Cloud-Aerosol Lidar with Orthogonal Polarization), MODIS, and FY-3D/MERSI-II CP products were used together for cross-validation. Results indicate strong spatial consistency between ML-based MERSI-II and MODIS CP products. The hit rate (HR) of random forest (RF) CP product could reach 0.85 compared with MYD06 IR CP products. In addition, when compared with the operational FY-3D/MERSI CP product, the RF-based CP product had higher HRs. Using the CALIOP cloud product as an independent reference, the liquid-phase accuracy of the RF CP product was higher than that of operational FY-3D/MERSI-II and MYD06 IR CP products. This study aimed to establish a robust algorithm for deriving FY-3D/MERSI-II CP climate data record (CDR) for research and applications.

APA, Harvard, Vancouver, ISO, and other styles

8

Wang, Zhongting, Ruru Deng, Pengfei Ma, et al. "250-m Aerosol Retrieval from FY-3 Satellite in Guangzhou." Remote Sensing 13, no. 5 (2021): 920. http://dx.doi.org/10.3390/rs13050920.

Full text

Abstract:

Aerosol distribution with fine spatial resolution is crucial for atmospheric environmental management. This paper proposes an improved algorithm of aerosol retrieval from 250-m Medium Resolution Spectral Image (MERSI) data of Chinese FY-3 satellites. A mixing model of soil and vegetation was used to calculate the parameters of the algorithm from moderate-resolution imaging spectroradiometer (MODIS) reflectance products in 500-m resolution. The mixing model was used to determine surface reflectance in blue band, and the 250-m aerosol optical depth (AOD) was retrieved through removing surface contributions from MERSI data over Guangzhou. The algorithm was used to monitor two pollution episodes in Guangzhou in 2015, and the results displayed an AOD spatial distribution with 250-m resolution. Compared with the yearly average of MODIS aerosol products in 2015, the 250-m resolution AOD derived from the MERSI data exhibited great potential for identifying air pollution sources. Daily AODs derived from MERSI data were compared with ground results from CE318 measurements. The results revealed a correlation coefficient between the AODs from MERSI and those from the ground measurements of approximately 0.85, and approximately 68% results were within expected error range of ±(0.05 + 15%τ).

APA, Harvard, Vancouver, ISO, and other styles

9

Xie, Yanqing, Zhengqiang Li, Weizhen Hou, et al. "Validation of FY-3D MERSI-2 Precipitable Water Vapor (PWV) Datasets Using Ground-Based PWV Data from AERONET." Remote Sensing 13, no. 16 (2021): 3246. http://dx.doi.org/10.3390/rs13163246.

Full text

Abstract:

The medium resolution spectral imager-2 (MERSI-2) is one of the most important sensors onboard China’s latest polar-orbiting meteorological satellite, Fengyun-3D (FY-3D). The National Satellite Meteorological Center of China Meteorological Administration has developed four precipitable water vapor (PWV) datasets using five near-infrared bands of MERSI-2, including the P905 dataset, P936 dataset, P940 dataset and the fusion dataset of the above three datasets. For the convenience of users, we comprehensively evaluate the quality of these PWV datasets with the ground-based PWV data derived from Aerosol Robotic Network. The validation results show that the P905, P936 and fused PWV datasets have relatively large systematic errors (−0.10, −0.11 and −0.07 g/cm2), whereas the systematic error of the P940 dataset (−0.02 g/cm2) is very small. According to the overall accuracy of these four PWV datasets by our assessments, they can be ranked in descending order as P940 dataset, fused dataset, P936 dataset and P905 dataset. The root mean square error (RMSE), relative error (RE) and percentage of retrieval results with error within ±(0.05+0.10∗PWVAERONET) (PER10) of the P940 PWV dataset are 0.24 g/cm2, 0.10 and 76.36%, respectively. The RMSE, RE and PER10 of the P905 PWV dataset are 0.38 g/cm2, 0.15 and 57.72%, respectively. In order to obtain a clearer understanding of the accuracy of these four MERSI-2 PWV datasets, we compare the accuracy of these four MERSI-2 PWV datasets with that of the widely used MODIS PWV dataset and AIRS PWV dataset. The results of the comparison show that the accuracy of the MODIS PWV dataset is not as good as that of all four MERSI-2 PWV datasets, due to the serious overestimation of the MODIS PWV dataset (0.40 g/cm2), and the accuracy of the AIRS PWV dataset is worse than that of the P940 and fused MERSI-2 PWV datasets. In addition, we analyze the error distribution of the four PWV datasets in different locations, seasons and water vapor content. Finally, the reason why the fused PWV dataset is not the one with the highest accuracy among the four PWV datasets is discussed.

APA, Harvard, Vancouver, ISO, and other styles

10

Wu, Jinwen, Longyu Sun, Yushu Zhang, Ruipeng Ji, Wenying Yu, and Rui Feng. "Study on Remote Sensing Inversion of Atmospheric Water Vapor Content Based on FY3B/MERSI Data." E3S Web of Conferences 257 (2021): 03068. http://dx.doi.org/10.1051/e3sconf/202125703068.

Full text

Abstract:

Atmospheric water vapor plays a vital role in global climate change. It not only affects local weather and climate but also influences the global water cycle and energy balance. Therefore, an accurate understanding of the atmospheric water vapor content and its changes are of great importance for forecasting climate, understanding global climate change, and studying the greenhouse effect. In this paper, the inversion of atmospheric water vapor content was conducted by FY3B/MERSI data, and verification was made by comparing with the sounding data, ground water vapor pressure data, and AQUA/MODIS water vapor content data. The results show that FY3B/MERSI atmospheric water vapor content has a significant positive correlation with the sounding water vapor content, ground water vapor pressure data, and AQUA/MODIS water vapor content data. Among them, the correlation with the sounding water vapor content is the most significant. An inversion correction model of MERSI atmospheric water vapor content can be established to improve the inversion accuracy.

APA, Harvard, Vancouver, ISO, and other styles

11

Wu, Ronghua, Peng Zhang, Na Xu, et al. "FY-3D MERSI On-Orbit Radiometric Calibration from the Lunar View." Sensors 20, no. 17 (2020): 4690. http://dx.doi.org/10.3390/s20174690.

Full text

Abstract:

Limited by the on-orbital calibration capability, scaling the measured radiance in accuracy and stability is challenging for the Earth observation satellites in the reflective solar bands (RSBs). Although the lunar calibration is a well-developed technique in the RSBs, limited work has been done for Chinese Earth observation satellites. To improve the on-orbital calibration performance, the advanced MEdium Resolution Spectral Imager (MERSI II), which is the primary payload of the fourth satellite of the Fengyun 3 Series (FY-3D), expands the space view angle of the imager in order to capture better lunar images. In this study, we propose an absolute radiometric calibration method based on the FY-3D/MERSI lunar observation data. A lunar irradiance model named ROLO/GIRO has been used together with the necessary data procedures, including dark current count estimation, single pixel irradiance calculation, and full disk lunar irradiance calculation. The calibration coefficients obtained by the lunar calibration are compared with the pre-launch laboratory calibration. The results show that the deviations between the two calibration procedures are in a reasonable range in general. However, a relatively high non-linear response was found in the low energy incidence for some detectors, which leads to the large deviation in the corresponding bands. This study explored an ideal and independent method to validate MERSI on-orbit radiometric performance. The lunar calibration practiced for MERSI also gave a valuable example that can be recommended to the other Chinese Earth observation satellites.

APA, Harvard, Vancouver, ISO, and other styles

12

Gong, Shaoqi, Daniel F. T. Hagan, and Cunjie Zhang. "Analysis on Precipitable Water Vapor over the Tibetan Plateau Using FengYun-3A Medium Resolution Spectral Imager Products." Journal of Sensors 2019 (November 28, 2019): 1–12. http://dx.doi.org/10.1155/2019/6078591.

Full text

Abstract:

The Tibetan Plateau is the largest and highest plateau in the world, and its complex terrain affects the distribution of precipitable water vapor (PWV) in the atmosphere, which plays an important role in the weather and climate of East Asia. In this paper, the characteristics of PWV over the Tibetan Plateau are studied using the FengYun-3A Medium Resolution Spectral Imager (MERSI) water vapor products, which are retrieved from the MERSI raw images of Chinese second-generation polar orbit meteorological satellite. Firstly, the accuracy of the MERSI 5-minute water vapor product is validated using three referenced water vapor data from TERRA/MODIS, ground-based GPS, and AERONET sun photometer over the Tibetan Plateau. Then, the spatial distribution and seasonal variation of PWV over the plateau are analyzed, and the effects of topographic factors on PWV are discussed. The results indicate that the MERSI 5-minute water vapor product has a good accuracy over the Tibetan Plateau, which the mean absolute error of MERSI water vapor product is in the range of 28.91%-37.54%, the mean absolute error range between 1.87 and 2.76 millimeter (mm), and the mean bias is between -1.14 and 0.64 mm comparing three referenced data. The PWV content appears as a typical spatial pattern over the Tibetan Plateau where there is a decrease from east to west of the Tibetan Plateau with increasing elevation, with the highest values over the south of Tibet. A second pattern also appears over the eastern part of the Tibetan Plateau, where the PWV content in the Qaidam Basin and the south of Tarim Basin are also considerably high. The seasonal variation of PWV content over the Tibetan Plateau presents to be highest in summer, followed by autumn and spring, and lowest in winter. The PWV content changes periodically during the year, which fits with a quadratic polynomial over monthly scales. The topographical factors of the Tibetan Plateau were found to affect the water vapor, where the altitude and latitude are negatively correlated with water vapor, while the slope and longitude show a positive correlation with water vapor; however, the aspect does not appear to have any significant influence on water vapor.

APA, Harvard, Vancouver, ISO, and other styles

13

Chen, Yepei, Kaimin Sun, Wenzhuo Li, Xiuqing Hu, Pengfei Li, and Ting Bai. "Vicarious Calibration of FengYun-3D MERSI-II at Railroad Valley Playa Site: A Case for Sensors with Large View Angles." Remote Sensing 13, no. 7 (2021): 1347. http://dx.doi.org/10.3390/rs13071347.

Full text

Abstract:

Vicarious calibration, as one on-orbit calibration method, is a supplement to onboard calibration of sensors. The application of vicarious calibration, however, is greatly limited due to the time- and effort-consuming field measurements of atmosphere and surface. Fortunately, the Radiometric Calibration Network (RadCalNet) provides automated in situ data at multiple sites, thus increasing the opportunities to achieve ongoing ground-reference calibration of in-orbit instruments. The MEdium Resolution Spectrum Imager-II (MERSI-II) onboard FengYun-3D (FY) has the temporal, spectral, spatial, and radiometric capacity for image capture at a level on par with other sensors used worldwide, such as the Moderate Resolution Imaging Spectroradiometer (MODIS). Its on-orbit radiometric performance, however, is assessed in a limited manner. In this study, the reflectance-based vicarious calibration method was employed to calibrate the MERSI-II sensor using ground measurements from RadCalNet at the Railroad Valley Playa site. The calibration of the MERSI-II sensor with large view angles presents difficulties due to the uncertainties introduced by surface bidirectional reflectance distribution function (BRDF) effects. Thus, we performed BRDF correction to harmonize the sensor and ground measurements to consistent observation geometries, before the in-situ measurements were taken as inputs for the 6SV radiative transfer model to predict at-sensor radiance. The calibration results were comprehensively validated with ground data and MODIS benchmark datasets. The results show that accounting for BRDF correction could improve the accuracy of vicarious calibration and ensure inter-consistency between different sensors. An analysis of the vicarious calibration of FY-3D MERSI-II yielded uncertainties of <5% for solar reflective bands, which meets the radiometric accuracy requirements typical for land-monitoring space missions. The proposed approach is also applicable to the calibration of other large footprint sensors.

APA, Harvard, Vancouver, ISO, and other styles

14

Abbasi, Bilawal, Zhihao Qin, Wenhui Du, et al. "An Algorithm to Retrieve Total Precipitable Water Vapor in the Atmosphere from FengYun 3D Medium Resolution Spectral Imager 2 (FY-3D MERSI-2) Data." Remote Sensing 12, no. 21 (2020): 3469. http://dx.doi.org/10.3390/rs12213469.

Full text

Abstract:

The atmosphere has substantial effects on optical remote sensing imagery of the Earth’s surface from space. These effects come through the functioning of atmospheric particles on the radiometric transfer from the Earth’s surface through the atmosphere to the sensor in space. Precipitable water vapor (PWV), CO2, ozone, and aerosol in the atmosphere are very important among the particles through their functioning. This study presented an algorithm to retrieve total PWV from the Chinese second-generation polar-orbiting meteorological satellite FengYun 3D Medium Resolution Spectral Imager 2 (FY-3D MERSI-2) data, which have three near-infrared (NIR) water vapor absorbing channels, i.e., channel 16, 17, and 18. The algorithm was improved from the radiance ratio technique initially developed for Moderate-Resolution Imaging Spectroradiometer (MODIS) data. MODTRAN 5 was used to simulate the process of radiant transfer from the ground surfaces to the sensor at various atmospheric conditions for estimation of the coefficients of ratio technique, which was achieved through statistical regression analysis between the simulated radiance and transmittance values for FY-3D MERSI-2 NIR channels. The algorithm was then constructed as a linear combination of the three-water vapor absorbing channels of FY-3D MERSI-2. Measurements from two ground-based reference datasets were used to validate the algorithm: the sun photometer measurements of Aerosol Robotic Network (AERONET) and the microwave radiometer measurements of Energy’s Atmospheric Radiation Measurement Program (ARMP). The validation results showed that the algorithm performs very well when compared with the ground-based reference datasets. The estimated PWV values come with root mean square error (RMSE) of 0.28 g/cm2 for the ARMP and 0.26 g/cm2 for the AERONET datasets, with bias of 0.072 g/cm2 and 0.096 g/cm2 for the two reference datasets, respectively. The accuracy of the proposed algorithm revealed a better consistency with ground-based reference datasets. Thus, the proposed algorithm could be used as an alternative to retrieve PWV from FY-3D MERSI-2 data for various remote sensing applications such as agricultural monitoring, climate change, hydrologic cycle, and so on at various regional and global scales.

APA, Harvard, Vancouver, ISO, and other styles

15

Chen, Shengli, Xiaobing Zheng, Xin Li, Wei Wei, Shenda Du, and Fuxiang Guo. "Vicarious Radiometric Calibration of Ocean Color Bands for FY-3D/MERSI-II at Lake Qinghai, China." Sensors 21, no. 1 (2020): 139. http://dx.doi.org/10.3390/s21010139.

Full text

Abstract:

To calibrate the low signal response of the ocean color (OC) bands and test the stability of the Fengyun-3D (FY-3D)/Medium Resolution Spectral Imager II (MERSI-II), an absolute radiometric calibration field test of FY-3D/MERSI-II at the Lake Qinghai Radiometric Calibration Site (RCS) was carried out in August 2018. The lake surface and atmospheric parameters were mainly measured by advanced observation instruments, and the MODerate spectral resolution atmospheric TRANsmittance algorithm and computer model (MODTRAN4.0) was used to simulate the multiple scattering radiance value at the altitude of the sensor. The results showed that the relative deviations between bands 9 and 12 are within 5.0%, while the relative deviations of bands 8, and 13 are 17.1%, and 12.0%, respectively. The precision of the calibration method was verified by calibrating the Aqua/Moderate-resolution Imaging Spectroradiometer (MODIS) and National Polar-orbiting Partnership (NPP)/Visible Infrared Imaging Radiometer (VIIRS), and the deviation of the calibration results was evaluated with the results of the Dunhuang RCS calibration and lunar calibration. The results showed that the relative deviations of NPP/VIIRS were within 7.0%, and the relative deviations of Aqua/MODIS were within 4.1% from 400 nm to 600 nm. The comparisons of three on-orbit calibration methods indicated that band 8 exhibited a large attenuation after launch and the calibration results had good consistency at the other bands except for band 13. The uncertainty value of the whole calibration system was approximately 6.3%, and the uncertainty brought by the field surface measurement reached 5.4%, which might be the main reason for the relatively large deviation of band 13. This study verifies the feasibility of the vicarious calibration method at the Lake Qinghai RCS and provides the basis and reference for the subsequent on-orbit calibration of FY-3D/MERSI-II.

APA, Harvard, Vancouver, ISO, and other styles

16

Sun, Ling, Xiuqing Hu, Maohua Guo, and Na Xu. "Multisite Calibration Tracking for FY-3A MERSI Solar Bands." IEEE Transactions on Geoscience and Remote Sensing 50, no. 12 (2012): 4929–42. http://dx.doi.org/10.1109/tgrs.2012.2215613.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Ling Sun, Xiuqing Hu, Na Xu, Jingjing Liu, Lijun Zhang, and Zhiguo Rong. "Postlaunch Calibration of FengYun-3B MERSI Reflective Solar Bands." IEEE Transactions on Geoscience and Remote Sensing 51, no. 3 (2013): 1383–92. http://dx.doi.org/10.1109/tgrs.2012.2217345.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Castiblanco, Claudia, Halea Meese, and C. Stephen Foster. "Treatment of pediatric uveitis with adalimumab: the MERSI experience." Journal of American Association for Pediatric Ophthalmology and Strabismus 20, no. 2 (2016): 145–47. http://dx.doi.org/10.1016/j.jaapos.2015.12.006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Gong, Shaoqi, Daniel Fiifi Hagan, Jing Lu, and Guojie Wang. "Validation on MERSI/FY-3A precipitable water vapor product." Advances in Space Research 61, no. 1 (2018): 413–25. http://dx.doi.org/10.1016/j.asr.2017.10.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Widyanto, Arif. "APPLICATION OF LARVITRAP AND OVITRAP TO CONTROL Aedes sp. IN DHF ENDEMIC AREAS." Buletin Keslingmas 39, no. 4 (2020): 210–13. http://dx.doi.org/10.31983/keslingmas.v39i4.6589.

Full text

Abstract:

Alternative mosquito vector control at this time that is cheap, practical and relatively safe to the environment is needed by developing countries such as Indonesia.One of the methods of controlling Aedes sp without insecticides is the use of larvae traps (larvitrap). The working principle of larvitrap is that the eggs trapped in the tool The incidence rate (IR) of Dengue Hemorrhagic Fever per 100.000 population in Central Java in the last five years is as follows: 2011 amounted to 15,27 in 2012 amounted to 19,29 in 2013 amounted to 45,52 in 2014 amounted to 32,95 and years 2015 amounted to 34,87. Since 2010 DHF has spread to all districts / cities in Central Java. Larvitrap and ovitrap are tools that can be used as traps for Aedes sp. Both of these tools can be used with additional attractants which can serve to attract the attention of Aedes sp. in order to lay eggs on the tool. Larvae that hatch from eggs in the larvitrap eventually cannot become adults and will die. Mosquito eggs trapped in the ovitrap can be destroyed so that they do not develop into adult mosquitoes. The research objective was to determine the effectiveness of using larvitrap and ovitrap as a control tool for Aedes sp (DHF vector).The research method used is experimental research. The research location is in the Banyumas Regency area. Larvitrap made of plastic jars and pralon was painted black and modified using gauze on the top. Ovitrap from plastic cups was painted black and given an ovistrip. Larvitrap and ovitrap were placed in DHF endemic areas. After the larvitrap and ovitrap are taken, the number of trapped Aedes sp and the larvitrap / ovitrap index is calculated. Furthermore, analyzed the effectiveness of using larvitrap and ovitrap as a means of controlling mosquitoes Aedes sp.The results showed that the larvitrap index in the larvitrap installation in Pandak Village was 60%, while in Mersi Village it was 56,7%. The ovitrap index in the ovitrap installation in Pandak Village was 36,7%, while in Mersi Village it was 33,3%. The number of larvae trapped in the larvitrap installation in Pandak Village were 832 larvae, while in Mersi Village there were 985 larvae. The number of eggs trapped in the ovitrap installation in Pandak Village were 518 eggs, while in Mersi Village there were 811 eggs.The conclusion of this research is that larvitrap is more effective to control Aedes sp than ovitrap. The community is advised to use larvitrap as a tool to control the Aedes sp (DHF vector.

APA, Harvard, Vancouver, ISO, and other styles

21

WU Rong-hua, 吴荣华, 张. 鹏. ZHANG Peng, 郑小兵 ZHENG Xiao-bing, et al. "Data collection and irradiance conversion of lunar obsevation for MERSI." Optics and Precision Engineering 27, no. 8 (2019): 1819–27. http://dx.doi.org/10.3788/ope.20192708.1819.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Sun, Ling, Maohua Guo, Jianhua Zhu, Xiuqing Hu, and Qingjun Song. "FY-3A/MERSI, ocean color algorithm, products and demonstrative applications." Acta Oceanologica Sinica 32, no. 5 (2013): 75–81. http://dx.doi.org/10.1007/s13131-013-0316-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Han, Xiuzhen, Feng Wang, and Yang Han. "Fengyun-3D MERSI True Color Imagery Developed for Environmental Applications." Journal of Meteorological Research 33, no. 5 (2019): 914–24. http://dx.doi.org/10.1007/s13351-019-9028-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Zhang, Feng, Mingwei Zhu, Jiangnan Li, et al. "Alternate Mapping Correlated k-Distribution Method for Infrared Radiative Transfer Forward Simulation." Remote Sensing 11, no. 9 (2019): 994. http://dx.doi.org/10.3390/rs11090994.

Full text

Abstract:

The alternate mapping correlated k-distribution (AMCKD) method is studied and applied to satellite simulations. To evaluate the accuracy of AMCKD, the simulated brightness temperatures at the top of the atmosphere are compared with line-by-line radiative transfer model (LBLRTM) or the observed data which are from Advanced Himawari Imager (AHI) on board the Himawari-8, as well as Medium Resolution Spectral Imager (MERSI) on board the Fengyun-3D. The result of AMCKD is also compared with the algorithm of Radiative Transfer for the Television Observation Satellite Operational Vertical Sounder (RTTOV). Under the standard atmospheric profiles, the absolute errors of AMCKD in all longwave channels of AHI and MERSI are bounded by 0.44K compared to the benchmark results of LBLRTM, which are more accurate than those of RTTOV. In the most cases, the error of AMCKD is smaller than the NEDT at ST, while the error of RTTOV is larger than the instrument noise equivalent temperature (NEDT) at scene temperature (ST). Under real atmospheric profile conditions, the errors of AMCKD increase, because the input data from ERA-Interim reanalysis dataause bias in the satellite remote sensing results. In the most considered cases, the accuracy of AMCKD is higher than RTTOV, while the efficiency of AMCKD is slightly slower than RTTOV.

APA, Harvard, Vancouver, ISO, and other styles

25

Yan, Lin, Yonghong Hu, Yong Zhang, et al. "Radiometric Calibration Evaluation for FY3D MERSI-II Thermal Infrared Channels at Lake Qinghai." Remote Sensing 13, no. 3 (2021): 466. http://dx.doi.org/10.3390/rs13030466.

Full text

Abstract:

The absolute radiometric accuracy of the Fengyun 3D advanced Medium Resolution Spectral Imager (FY3D MERSI-II) thermal infrared bands was evaluated using the collected field measurements and atmospheric transfer simulations during 16–22 August 2019 at Lake Qinghai. A thermal infrared radiometer equipped on an unmanned surface vehicle was used to continuously collect the water temperature. Atmospheric conditions, surface emissivity, and aerosol optical depth measured near the field experiment site were adopted by the atmospheric transfer code to calculate the parameters about the influence of atmosphere on long-wave radiation, including the path radiance and the transmittance propagated from land surface to the satellite. The radiometric calibration accuracy analysis suggests that the differences between the simulated brightness temperature and satellite-based brightness temperature are −0.346 K and −0.722 K for channel 24 on 18 and 20 August, respectively, while it reaches −0.460 K and −1.036 K for channel 25 on 18 and 20 August, respectively. The vicarious calibration coefficients were found to be in good agreement with the internal onboard calibration coefficient in channel 24 and 25 of the FY3D MERSI-II according to the validation analysis in selected regions. The thermal infrared bands of the FY3D have a good in-orbit operational status according to our vicarious calibration experiments.

APA, Harvard, Vancouver, ISO, and other styles

26

Sari, Arvita Kumala, Devi Octaviana, and Siwi Pramatama Mars Wijayanti. "PERBEDAAN EFEKTIFITAS PENGGUNAAN ATRAKTAN LARUTAN FERMENTASI GULA-RAGI DAN AIR RENDAMAN CABAI MERAH (Capsicum Annum) TERHADAP JUMLAH TELUR Aedes Sp. YANG TERPERANGKAP." Kesmas Indonesia 9, no. 02 (2017): 60. http://dx.doi.org/10.20884/1.ki.2017.9.02.542.

Full text

Abstract:

Oviposition trap (Ovitrap) is one of the Aedes sp mosquito controlling method without insectide. The purpose of this study was to determine the effectiveness of the use of attractant solution of yeast- sugar and water soaking red chilii to the number of trapped eggs of Aedes sp. Type of this research was experimental study. The subject of this research were all the eggs were trapped on ovitrap, while the research unit was a group of houses, building / construction in the research area which consisted of 15 houses. The study was conducted in kelurahan Mersi,Mersi District of Purwokerto. This research applies 3 treatment, so that the object consists of 15 houses with the total number of installed ovitrap 45 indoors and 45 outdoors. Total number of eggs of Aedes sp which trapped in ovitrap were 1021 grain. Number of trapped eggs in control (water wells), water of soaking red chili attractant and solution of yeast-sugart attractant were 929 grains (91%), 60 grains (5,9%) and 32 grains (3.1%) respectively. Number of eggs which trappped in ovitrap outdoor were 639 grains (62.6%) while in ovitrap indoor wwere 382 grains (37.4%). There was significant difference in the number of eggs that trapped in each type of attractant, however there was no significant difference in the number of eggs that are trapped on the basis of location.

APA, Harvard, Vancouver, ISO, and other styles

27

Sement, François M., Takuma Suematsu, Liye Zhang, et al. "Transcription initiation defines kinetoplast RNA boundaries." Proceedings of the National Academy of Sciences 115, no. 44 (2018): E10323—E10332. http://dx.doi.org/10.1073/pnas.1808981115.

Full text

Abstract:

Mitochondrial genomes are often transcribed into polycistronic RNAs punctuated by tRNAs whose excision defines mature RNA boundaries. Although kinetoplast DNA lacks tRNA genes, it is commonly held that in Trypanosoma brucei the monophosphorylated 5′ ends of functional molecules typify precursor partitioning by an unknown endonuclease. On the contrary, we demonstrate that individual mRNAs and rRNAs are independently synthesized as 3′-extended precursors. The transcription-defined 5′ terminus is converted into a monophosphorylated state by the pyrophosphohydrolase complex, termed the “PPsome.” Composed of the MERS1 NUDIX enzyme, the MERS2 pentatricopeptide repeat RNA-binding subunit, and MERS3 polypeptide, the PPsome binds to specific sequences near mRNA 5′ termini. Most guide RNAs lack PPsome-recognition sites and remain triphosphorylated. The RNA-editing substrate-binding complex stimulates MERS1 pyrophosphohydrolase activity and enables an interaction between the PPsome and the polyadenylation machinery. We provide evidence that both 5′ pyrophosphate removal and 3′ adenylation are essential for mRNA stabilization. Furthermore, we uncover a mechanism by which antisense RNA-controlled 3′–5′ exonucleolytic trimming defines the mRNA 3′ end before adenylation. We conclude that mitochondrial mRNAs and rRNAs are transcribed and processed as insulated units irrespective of their genomic location.

APA, Harvard, Vancouver, ISO, and other styles

28

Yin, Xiao Hui, Peng Dong Gao, Chu Qiu, and Yong Quan Lu. "Parallel Processing and Performance Optimization of Meteorological Satellite Mass-Data Program." Applied Mechanics and Materials 263-266 (December 2012): 192–97. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.192.

Full text

Abstract:

We implemented parallel processing of polar-orbiting meteorological satellite MERSI data aerosol retrieval program. The parallel implementation was based on Linux cluster architecture. The master-slave parallel programming mode on MPI parallel environment was applied. Performance optimizations are made in load balance, communication overhead, storage and system I/O according to the specific environment. In addition, parallel speed-up ratio and efficiency were analyzed to evaluate the experiment results. Experimental results demonstrate that the parallel techniques and the performance optimization methods proposed here can significantly improve the efficiency of satellite mass-data processing program.

APA, Harvard, Vancouver, ISO, and other styles

29

Shan, Tianchan, Changlin Wang, Fang Chen, et al. "A Burned Area Mapping Algorithm for Chinese FengYun-3 MERSI Satellite Data." Remote Sensing 9, no. 7 (2017): 736. http://dx.doi.org/10.3390/rs9070736.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

WANG Ling, 王玲, 胡秀清 HU Xiu-qing, and 陈林 CHEN Lin. "FY-3C/MERSI caliration for solar band using multi-reflectance stable targets." Optics and Precision Engineering 23, no. 7 (2015): 1911–20. http://dx.doi.org/10.3788/ope.20152307.1911.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Liu, Q. S., Y. H. Tang, L. Qin, H. S. Dai, Q. C. Zhao, and Y. Yang. "On-board radiometric calibration for thermal emission band of FY-3C/MERSI." International Journal of Remote Sensing 40, no. 1 (2017): 1–14. http://dx.doi.org/10.1080/01431161.2017.1339929.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Min, Min, Guangzhen Cao, Na Xu, et al. "On-Orbit Spatial Quality Evaluation and Image Restoration of FengYun-3C/MERSI." IEEE Transactions on Geoscience and Remote Sensing 54, no. 12 (2016): 6847–58. http://dx.doi.org/10.1109/tgrs.2016.2569038.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Zhou, Y., J. Du, Y. Zhang, C. Gong, and Y. Hu. "PARAMETER ESTIMATION AND MOTION TRACKING OF PACK ICE FROM FY-3/MERSI IMAGES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2020 (August 21, 2020): 925–32. http://dx.doi.org/10.5194/isprs-archives-xliii-b3-2020-925-2020.

Full text

Abstract:

Abstract. A method to estimate the shape parameters and track the motion velocity of pack ice is presented. The method consists of sea ice recognition, pack ice extraction, parameters estimation and motion tracking. We try to estimate the shape parameters and track the motion velocity from FY-3/MERSI images of Fram strait, which were covered by cloud less than 30%. It found that the pack ice concentration significantly decreases faster than sea ice concentration. The two parameters indicate the distribution difference between sea ices and pack ices. The change of the perimeter and mean clamp diameter are obvious owing to they were sensitive to the edge of the pack ices. But the small change of roundness, convexity and width-height ratio indicate the shape similarity of pack ices in various size. More than 80% of the pack ices in the study region are tracked successfully by the proposed method. The resulting motion vectors in the overlapping zones are found to match well with the polar daily grid sea ice motion vectors provided by the National Snow and Ice Data Centre. The method can provide the actual motion vector of pack ices to improve the distribution and details of the grid-to-grid motion vectors.

APA, Harvard, Vancouver, ISO, and other styles

34

Fan Axin, 樊阿馨, 徐娜 Xu Na, 许廷发 Xu Tingfa, et al. "Identification and Normalization of Image Gain of FY-3A MERSI Shortwave Infrared Bands." Acta Optica Sinica 38, no. 11 (2018): 1111001. http://dx.doi.org/10.3788/aos201838.1111001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Gao, Peng, Yichao Zheng, Jingjing Ai, and Li Fang. "Error analysis of on-orbit thermal emission band radiometric calibration for FY3C/MERSI." Journal of the Optical Society of America B 37, no. 9 (2020): 2755. http://dx.doi.org/10.1364/josab.389690.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Yin, Gaofei, Jing Li, Qinhuo Liu, Bo Zhong, and Ainong Li. "Improving LAI spatio-temporal continuity using a combination of MODIS and MERSI data." Remote Sensing Letters 7, no. 8 (2016): 771–80. http://dx.doi.org/10.1080/2150704x.2016.1182657.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Xu, Na, Xinhua Niu, Xiuqing Hu, et al. "Prelaunch Calibration and Radiometric Performance of the Advanced MERSI II on FengYun-3D." IEEE Transactions on Geoscience and Remote Sensing 56, no. 8 (2018): 4866–75. http://dx.doi.org/10.1109/tgrs.2018.2841827.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Xiao Da, 肖达, 徐娜 Xu Na, 胡秀清 Hu Xiuqing, et al. "On-Orbit Detection and Correction of Crosstalk Effect of FY-3D MERSI-II Signals." Acta Optica Sinica 40, no. 10 (2020): 1011001. http://dx.doi.org/10.3788/aos202040.1011001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Awaludin, Sidik, and Iwan Purnawan. "The Impact of Humor Therapy to Reduce Headache Due to Hypertension in Mersi Purwokerto." Jurnal Keperawatan Soedirman 13, no. 1 (2018): 15. http://dx.doi.org/10.20884/1.jks.2018.13.1.765.

Full text

Abstract:

<p>Hypertension can lead to the heart disease, kidney, and stroke if the blood pressure is not controlled. Various complementary therapies are developed to reduce pain due to high blood pressure. Humor therapy can cause a relaxation response and reduce a headache. The purpose of this research was to identify the impact of humor therapy to reduce headache caused by hypertension. This research used a quasi-experimental design of pre and post control group design. The number of samples was 40 people with primary hypertension in Mersi village Purwokerto. The sampling technique used was purposive sampling. Numeric rating scale was applied to measure the pain scale. The difference of pain scale before and after the intervention was tested using Mann Whitney test. Statistical analysis result showed that humor therapy has a significant impact to reduce headache due to hypertension (p value = 0.000). Humor therapy is able to reduce headache due to hypertension significantly.</p>.

APA, Harvard, Vancouver, ISO, and other styles

40

Novitasari, Dwi, and Ikit Netra Wirakhmi. "PENURUNAN NYERI KEPALA PADA LANSIA DENGAN HIPERTENSI MENGGUNAKAN RELAKSASI AUTOGENIK DI KELURAHAN MERSI PURWOKERTO." MEDIA ILMU KESEHATAN 7, no. 2 (2019): 104–13. http://dx.doi.org/10.30989/mik.v7i2.229.

Full text

Abstract:

Background: Headache in the occipital region is the most common symptom of hypertension, caused by enhanchement intra-cranial pressure and vasoconstriction resulting in decreased perfusion of cerebral tissue. This causes insomnia, decreased concentration and decreased ability of daily living activity. Autogenic relaxation causes vasodilation and a calm emotional response that increases the response of the parasympathetic system. This modulation stimulus can decrease perception of headache. Objective: The aims of this study was to find out how the reduction of headache on hypertension before and after autogenic relaxation. Methods: The design of this research was pre experimental with one group pretest-postest design approach. The sample are 38 patients with hypertension who complained of headache in Mersi Purwokerto. Selection has been using purposive sampling. Measurement of head pain using visual analog scale. Data analysis using Wilcoxon test. Results: The mean headache before the autogenic relaxation technique was 5.24, and the mean headache after autogenic relaxation technique was 3.47, including the range of moderate pain. There was a significant difference between headache before and after the autogenic relaxation technique with p value: 0,000. Conclusion: Autogenic relaxation can be used by the elderly with hypertension to reduce headache. Keywords: Autogenic relaxation, headache, hypertension.

APA, Harvard, Vancouver, ISO, and other styles

41

Novitasari, Dwi, and Ikit Netra Wirakhmi. "PENURUNAN NYERI KEPALA PADA LANSIA DENGAN HIPERTENSI MENGGUNAKAN RELAKSASI AUTOGENIK DI KELURAHAN MERSI PURWOKERTO." Media Ilmu Kesehatan 7, no. 2 (2018): 104–13. http://dx.doi.org/10.30989/mik.v7i2.278.

Full text

Abstract:

Background: Headache in the occipital region is the most common symptom of hypertension, caused by enhanchement intra-cranial pressure and vasoconstriction resulting in decreased perfusion of cerebral tissue. This causes insomnia, decreased concentration and decreased ability of daily living activity. Autogenic relaxation causes vasodilation and a calm emotional response that increases the response of the parasympathetic system. This modulation stimulus can decrease perception of headache. Objective: The aims of this study was to find out how the reduction of headache on hypertension before and after autogenic relaxation. Methods: The design of this research was pre experimental with one group pretest-postest design approach. The sample are 38 patients with hypertension who complained of headache in Mersi Purwokerto. Selection has been using purposive sampling. Measurement of head pain using visual analog scale. Data analysis using Wilcoxon test. Results: The mean headache before the autogenic relaxation technique was 5.24, and the mean headache after autogenic relaxation technique was 3.47, including the range of moderate pain. There was a significant difference between headache before and after the autogenic relaxation technique with p value: 0,000. Conclusion: Autogenic relaxation can be used by the elderly with hypertension to reduce headache.

APA, Harvard, Vancouver, ISO, and other styles

42

NIU Xin-hua, 钮新华, 周巨广 ZHOU Ju-guang, 陈帅帅 CHEN Shuai-shuai, 王向华 WANG Xiang-hua, 丁雷 DING Lei, and 胡秀清 HU Xiu-qing. "Simulation and suppression of solar on-orbit pollution of FY-3/MERSI onboard blackbody." Optics and Precision Engineering 23, no. 7 (2015): 1822–28. http://dx.doi.org/10.3788/ope.20152307.1822.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Feng, R., P. S. Chen, J. W. Wu, W. Y. Yu, R. P. Ji, and Y. S. Zhang. "Extraction and analysis of spectral characteristics of lakes in northeast China based on MERSI." IOP Conference Series: Earth and Environmental Science 69 (June 2017): 012024. http://dx.doi.org/10.1088/1755-1315/69/1/012024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

吴, 传赏. "Research on Method of “Abnormal Stripe Problem” of Vegetation Index Product of FY3A MERSI." Geographical Science Research 05, no. 02 (2016): 64–74. http://dx.doi.org/10.12677/gser.2016.52008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Zhu, Lin, Jing M. Chen, Shihao Tang, Guicai Li, and Zhaodi Guo. "Inter-Comparison and Validation of the FY-3A/MERSI LAI Product Over Mainland China." IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 7, no. 2 (2014): 458–68. http://dx.doi.org/10.1109/jstars.2013.2280466.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Zhang Jingwei, 张靖玮, та 丘仲锋 Qiu Zhongfeng. "针对海洋水域的FY-3D MERSI II数据质量评估". Acta Optica Sinica 41, № 12 (2021): 1201002. http://dx.doi.org/10.3788/aos202141.1201002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

MIN Min, 闵敏, 白玉 BAI Yu, 胡秀清 HU Xiu-qing, and 郭建平 GUO Jian-ping. "Evaluation and comparison of modulation transfer function for FY-3B/C MERSI on early orbit." Optics and Precision Engineering 23, no. 7 (2015): 1838–44. http://dx.doi.org/10.3788/ope.20152307.1838.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Gong, Shaoqi, Daniel F. T. Hagan, Xinyi Wu, and Guojie Wang. "Spatio-temporal analysis of precipitable water vapour over northwest china utilizing MERSI/FY-3A products." International Journal of Remote Sensing 39, no. 10 (2018): 3094–110. http://dx.doi.org/10.1080/01431161.2018.1437298.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Zhang, X. R., L. Zhu, H. F. Sun, and S. S. Chu. "Validation and inter-comparison of the FY-3B/MERSI LAI product with GLOBMAP and MYD15A2H." International Journal of Remote Sensing 41, no. 23 (2020): 9256–82. http://dx.doi.org/10.1080/01431161.2020.1804089.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Hou, Weimin, Jia Su, Wenbo Xu, and Xinyi Li. "Inversion of the Fraction of Absorbed Photosynthetically Active Radiation (FPAR) from FY-3C MERSI Data." Remote Sensing 12, no. 1 (2019): 67. http://dx.doi.org/10.3390/rs12010067.

Full text

Abstract:

An accurate inversion of the fraction of absorbed photosynthetically active radiation (FPAR) based on remote sensing data is particularly important for understanding global climate change. At present, there are relatively few studies focusing on the inversion of FPAR using Chinese autonomous satellites. This work intends to investigate the inversion of the FPAR obtained from the FengYun-3C (FY-3C) data of domestic satellites by using the PROSAIL model and the look-up table (LUT) algorithm for different vegetation types from various places in China. After analyzing the applicability of existing models using FY-3C data and MOD09GA data, an inversion strategy for FY-3C data is implemented. This strategy is applied to areas with various types of vegetation, such as grasslands, croplands, shrubs, broadleaf forests, and needleleaf forests, and produces FPAR products, which are cross-validated against the FPAR products from the Moderate Resolution Imaging Spectro Radiometer (MODIS), Geoland Version 1 (GEOV1), and Global Land Surface Satellite (GLASS). Accordingly, the results show that the FPAR retrieved from the FY-3C data has good spatial and temporal consistency and correlation with the three FPAR products. However, this technique does not favor all types of vegetation equally; the FY-FPAR is relatively more suitable for the inversion of grasslands and croplands during the lush period than for others. Therefore, the inversion strategy provides the potential to generate large-area and long-term sequence FPAR products from FY-3C data.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!