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Book ; Online: Hyperspectral Imaging and Applications

Chang, Chein-I / Song, Meiping / Zhang, Junping / Wu, Chao-Cheng

2022

Keywords	Technology: general issues ; History of engineering & technology ; biodiversity ; peatland ; vegetation type ; classification ; hyperspectral ; in situ measurements ; hyperspectral image (HSI) ; multiscale union regions adaptive sparse representation (MURASR) ; multiscale spatial information ; imaging spectroscopy ; airborne laser scanning ; minimum noise fraction ; class imbalance ; Africa ; agroforestry ; tree species ; hyperspectral unmixing ; endmember extraction ; band selection ; spectral variability ; prototype space ; ensemble learning ; rotation forest ; semi-supervised local discriminant analysis ; optical spectral region ; thermal infrared spectral region ; mineral mapping ; data integration ; HyMap ; AHS ; raw material ; remote sensing ; nonnegative matrix factorization ; data-guided constraints ; sparseness ; evenness ; hashing ensemble ; hierarchical feature ; hyperspectral classification ; band expansion process (BEP) ; constrained energy minimization (CEM) ; correlation band expansion process (CBEP) ; iterative CEM (ICEM) ; nonlinear band expansion (NBE) ; Otsu's method ; sparse unmixing ; local abundance ; nuclear norm ; hyperspectral detection ; target detection ; sprout detection ; constrained energy minimization ; iterative algorithm ; adaptive window ; hyperspectral imagery ; recursive anomaly detection ; local summation RX detector (LS-RXD) ; sliding window ; band selection (BS) ; band subset selection (BSS) ; hyperspectral image classification ; linearly constrained minimum variance (LCMV) ; successive LCMV-BSS (SC LCMV-BSS) ; sequential LCMV-BSS (SQ LCMV-BSS) ; vicarious calibration ; reflectance-based method ; irradiance-based method ; Dunhuang site ; 90° yaw imaging ; terrestrial hyperspectral imaging ; vineyard ; water stress ; machine learning ; tree-based ensemble ; progressive sample processing (PSP) ; real-time processing ; image fusion ; hyperspectral image ; panchromatic image ; structure tensor ; image enhancement ; weighted fusion ; spectral mixture analysis ; fire severity ; AVIRIS ; deep belief networks ; deep learning ; texture feature enhancement ; band grouping ; hyperspectral compression ; lossy compression ; on-board compression ; orthogonal projections ; Gram-Schmidt orthogonalization ; parallel processing ; anomaly detection ; sparse coding ; KSVD ; hyperspectral images (HSIs) ; SVM ; composite kernel ; algebraic multigrid methods ; hyperspectral pansharpening ; panchromatic ; intrinsic image decomposition ; weighted least squares filter ; spectral-spatial classification ; label propagation ; superpixel ; semi-supervised learning ; rolling guidance filtering (RGF) ; graph ; deep pipelined background statistics ; high-level synthesis ; data fusion ; data unmixing ; hyperspectral imaging
Language	0\|e
Size	1 electronic resource (632 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Publishing place	Basel
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT021613101
ISBN	9783039215232 ; 303921523X
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Patterns of Signal Intensity in CISS MRI of the Inner Ear and Eye.

Mair, Antonia / Song, Christopher I / Büki, Bela / Ward, Bryan K

Tomography (Ann Arbor, Mich.)

2024 Volume 10, Issue 2, Page(s) 203–214

Abstract: Background: Constructive interference in steady state (CISS) is a gradient echo magnetic resonance imaging (MRI) pulse sequence that provides excellent contrast between cerebrospinal fluid and adjacent structures but is prone to banding artifacts due to ...

Abstract	Background: Constructive interference in steady state (CISS) is a gradient echo magnetic resonance imaging (MRI) pulse sequence that provides excellent contrast between cerebrospinal fluid and adjacent structures but is prone to banding artifacts due to magnetic field inhomogeneities. We aimed to characterize artifacts in the inner ear and eye. Methods: In 30 patients (60 ears/eyes) undergoing CISS sequence MRI, nine low-signal intensity regions were identified in the inner ear and compared to temporal bone histopathology. The number and angle of bands across the eye were examined. Results: In the cochlea, all ears had regions of low signal corresponding to anatomy (modiolus (all), spiral lamina ( Conclusion: Low signal regions in the inner ear on CISS sequences are common and have consistent patterns; most in the inner ear represent anatomy, appearing blurred due to partial volume averaging. Banding artifacts in the eye are more variable.
MeSH term(s)	Humans ; Ear, Inner/anatomy & histology ; Ear, Inner/pathology ; Cochlea/diagnostic imaging ; Magnetic Resonance Imaging/methods
Language	English
Publishing date	2024-01-29
Publishing country	Switzerland
Document type	Journal Article
ISSN	2379-139X
ISSN (online)	2379-139X
DOI	10.3390/tomography10020016
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Advances in Hyperspectral Data Exploitation

Chang, Chein-I / Song, Meiping / Yu, Chunyan / Wang, Yulei / Yu, Haoyang / Li, Jiaojiao / Wang, Lin / Li, Hsiao-Chi / Li, Xiaorun

2022

Keywords	Technology: general issues ; History of engineering & technology ; hyperspectral image few-shot classification ; deep learning ; meta-learning ; relation network ; convolutional neural network ; constrained-target optimal index factor band selection (CTOIFBS) ; hyperspectral image ; underwater spectral imaging system ; underwater hyperspectral target detection ; band selection (BS) ; constrained energy minimization (CEM) ; lightweight convolutional neural networks ; hyperspectral imagery classification ; transfer learning ; air temperature ; spatial measurement ; FTIR ; MWIR ; carbon dioxide absorption ; target detection ; coffee beans ; insect damage ; hyperspectral imaging ; band selection ; visualization ; color formation models ; multispectral image ; image fusion ; joint tensor decomposition ; anomaly detection ; constrained sparse representation ; hyperspectral imagery ; moving target detection ; spatio-temporal processing ; hyperspectral remote sensing ; image classification ; constraint representation ; superpixel segmentation ; multiscale decision fusion ; plug-and-play ; denoising ; nonlinear unmixing ; spectral reconstruction ; residual augmented attentional u-shape network ; spatial augmented attention ; channel augmented attention ; boundary-aware constraint ; atmospheric transmittance ; temperature ; emissivity ; separation ; midwave infrared ; hyperspectral images ; hyperspectral image super-resolution ; data fusion ; spectral-spatial residual network ; self-supervised training ; hyperspectral ; vegetation ; generative adversarial network ; data augmentation ; classification ; rice leaf blast ; hyperspectral imaging data ; deep convolutional neural networks ; fused features ; evolutionary computation ; heuristic algorithms ; machine learning ; unmanned aerial vehicles (UAVs) ; vegetation mapping ; upland swamps ; mine environment ; rice ; rice leaf folder ; hyperspectral image classification ; change detection ; self-supervised learning ; attention mechanism ; multi-source image fusion ; SFIM ; least square estimation ; spatial filter ; hyperspectral imaging (HSI) ; hyperspectral target detection ; hyperspectral reconstruction ; hyperspectral unmixing
Language	English
Size	1 electronic resource (434 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Publishing place	Basel
Document type	Book ; Online
Note	English
HBZ-ID	HT030375357
ISBN	9783036557960 ; 3036557962
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article: Research on vertical spatial characteristic of satellite infrared hyperspectral atmospheric sounding data

Song, Ci / Yin, Qiu

Frontiers of earth science. 2022 June, v. 16, no. 2

2022

Abstract: Spatial characteristic is an important indicator of remote sensor performance, and space-borne infrared hyperspectral sounder is the frontier of atmospheric vertical sounding technology. In this paper, the formation mechanism of the vertical spatial ... ...

Abstract	Spatial characteristic is an important indicator of remote sensor performance, and space-borne infrared hyperspectral sounder is the frontier of atmospheric vertical sounding technology. In this paper, the formation mechanism of the vertical spatial characteristics involved in the space-borne infrared hyperspectral sounding data are analyzed in detail, which shows that the vertical spatial characteristics of sounding data depends not only on the spectral channels and their waveband coverage, but also the specific atmospheric parameter and its specific variation interested. The indicators of vertical spatial characteristics are defined and their mathematical models are established based on the mechanism analyses. These models are applied to the vertical spatial characteristic evaluation of atmospheric temperature sounding for FY-4A GIIRS, which is the first space-borne infrared hyperspectral atmospheric sounder in geostationary orbit. It is concluded that FY-4A GIIRS can sound the vertical temperature distribution in whole troposphere and lower stratosphere with height < 35 km. This study can provide basic information to support the improvement of infrared hyperspectral sounder and the trace of vertical spatial characteristics of atmospheric inversion products.
Keywords	air temperature ; remote sensing ; satellites ; stratosphere ; troposphere
Language	English
Dates of publication	2022-06
Size	p. 265-276.
Publishing place	Higher Education Press
Document type	Article
ZDB-ID	2606749-3
ISSN	2095-0209 ; 2095-0195
ISSN (online)	2095-0209
ISSN	2095-0195
DOI	10.1007/s11707-020-0841-1
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Concentrations and distributions of fluorotelomer alcohols and perfluoroalkane sulfonamido substances in the atmosphere in the Pearl River Delta, China.

Shen, Peng / Song, Xiaocong / Li, Nankun / Zhao, Ci

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering

2023 Volume 58, Issue 3, Page(s) 183–190

Abstract: Per and polyfluoroalkyl substances (PFASs) have attracted major global concerns because some of them are environmentally persistent, bioaccumulative, and toxic. Perfluoroalkyl acids (PFAAs) have been well-characterized in water, soil, and sediment; ... ...

Abstract	Per and polyfluoroalkyl substances (PFASs) have attracted major global concerns because some of them are environmentally persistent, bioaccumulative, and toxic. Perfluoroalkyl acids (PFAAs) have been well-characterized in water, soil, and sediment; however, fluorotelomer alcohols and perfluoroalkane sulfonamido substances have been overlooked. In this study, concentrations of three fluorotelomer alcohols and four perfluoroalkane sulfonamido substances were determined in the air at nine locations representing urban, rural-urban transect, and urban areas in the Pearl River Delta region, China to investigate their seasonal and spatial distributions and potential sources. At least two of the targeted PFASs were detected in all air samples in the Pearl River Delta region, with concentrations ranging from 371 pg/sampler to 18700 pg/sampler. Fluorotelomer alcohols were dominant compounds (contributing 46% to the ∑
MeSH term(s)	Water Pollutants, Chemical/analysis ; Environmental Monitoring ; Fluorocarbons/analysis ; China ; Seasons
Chemical Substances	fluorotelomer alcohols ; Water Pollutants, Chemical ; Fluorocarbons
Language	English
Publishing date	2023-02-17
Publishing country	England
Document type	Journal Article
ZDB-ID	196584-0
ISSN	1532-4117 ; 0360-1226 ; 1077-1204 ; 1093-4529
ISSN (online)	1532-4117
ISSN	0360-1226 ; 1077-1204 ; 1093-4529
DOI	10.1080/10934529.2023.2174332
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Article ; Online: Concentrations and distributions of fluorotelomer alcohols and perfluoroalkane sulfonamido substances in the atmosphere in the Pearl River Delta, China

Shen, Peng / Song, Xiaocong / Li, Nankun / Zhao, Ci

Journal of Environmental Science and Health, Part A. 2023 Feb. 23, v. 58, no. 3 p.183-190

2023

Abstract	Per and polyfluoroalkyl substances (PFASs) have attracted major global concerns because some of them are environmentally persistent, bioaccumulative, and toxic. Perfluoroalkyl acids (PFAAs) have been well-characterized in water, soil, and sediment; however, fluorotelomer alcohols and perfluoroalkane sulfonamido substances have been overlooked. In this study, concentrations of three fluorotelomer alcohols and four perfluoroalkane sulfonamido substances were determined in the air at nine locations representing urban, rural-urban transect, and urban areas in the Pearl River Delta region, China to investigate their seasonal and spatial distributions and potential sources. At least two of the targeted PFASs were detected in all air samples in the Pearl River Delta region, with concentrations ranging from 371 pg/sampler to 18700 pg/sampler. Fluorotelomer alcohols were dominant compounds (contributing 46% to the ∑₇PFAS concentration on average) in the atmosphere in the Pearl River Delta region. The total concentrations of the seven targeted PFASs were significantly higher in summer than in other seasons in urban areas. PFAS concentrations were positively related to the population density in the Pearl River Delta region. Local diffusive emission and long range transport could be sources of the seven PFASs in the air in the Pearl River Delta region.
Keywords	air ; environmental science ; perfluorocarbons ; population density ; river deltas ; rivers ; sediments ; soil ; summer ; toxicity ; China ; PFASs in the air ; potential sources ; and seasonal variation
Language	English
Dates of publication	2023-0223
Size	p. 183-190.
Publishing place	Taylor & Francis
Document type	Article ; Online
ZDB-ID	196584-0
ISSN	1532-4117 ; 0360-1226 ; 1077-1204 ; 1093-4529
ISSN (online)	1532-4117
ISSN	0360-1226 ; 1077-1204 ; 1093-4529
DOI	10.1080/10934529.2023.2174332
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Remimazolam to prevent hemodynamic instability during catheter ablation under general anesthesia: a randomized controlled trial.

Yim, Subin / Choi, Chang Ik / Park, Insun / Koo, Bon Wook / Oh, Ah Young / Song, In-Ae

Canadian journal of anaesthesia = Journal canadien d'anesthesie

2024

Abstract: ... than the desflurane group (29/49, 59%; relative risk [RR], 0.5; 95% confidence interval [CI], 0.31 to 0.83; P = 0.004 ... than desflurane was (23/47, 49% vs 43/49, 88%; RR, 0.56; 95% CI, 0.41 to 0.76; P < 0.001). No between-group ...

Title translation	Le remimazolam pour prévenir l’instabilité hémodynamique lors de l’ablation par cathéter sous anesthésie générale : une étude randomisée contrôlée.
Abstract	Purpose: Maintaining hemodynamic stability during cardiac ablation under general anesthesia is challenging. Remimazolam, a novel ultrashort-acting benzodiazepine, is characterized by maintaining comparatively stable blood pressure and does not influence the cardiac conduction system, which renders it a reasonable choice for general anesthesia for cardiac ablation. We aimed to evaluate whether remimazolam is associated with a decreased incidence of intraoperative hypotension compared with desflurane. Methods: In this single-centre, parallel-group, prospective, single-blind, randomized clinical trial, we randomized patients (1:1) into a remimazolam group (remimazolam-based total intravenous anesthesia) or desflurane group (propofol-induced and desflurane-maintained inhalational anesthesia) during cardiac ablation procedures for arrhythmia. The primary outcome was the incidence of intraoperative hypotensive events, defined as mean arterial pressure of < 60 mm Hg at any period. Results: Overall, we enrolled 96 patients between 2 August 2022 and 19 May 2023 (47 and 49 patients in the remimazolam and desflurane groups, respectively). The remimazolam group showed a significantly lower incidence of hypotensive events (14/47, 30%) than the desflurane group (29/49, 59%; relative risk [RR], 0.5; 95% confidence interval [CI], 0.31 to 0.83; P = 0.004). Remimazolam was associated with a lower requirement for bolus or continuous vasopressor infusion than desflurane was (23/47, 49% vs 43/49, 88%; RR, 0.56; 95% CI, 0.41 to 0.76; P < 0.001). No between-group differences existed in the incidence of perioperative complications such as nausea, vomiting, oxygen desaturation, delayed emergence, or pain. Conclusions: Remimazolam was a viable option for general anesthesia for cardiac ablation. Remimazolam-based total intravenous anesthesia was associated with significantly fewer hypotensive events and vasopressor requirements than desflurane-based inhalational anesthesia was, without significantly more complications. Study registration: ClinicalTrials.gov (NCT05486377); first submitted 1 August 2022.
Language	English
Publishing date	2024-04-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	91002-8
ISSN	1496-8975 ; 0832-610X
ISSN (online)	1496-8975
ISSN	0832-610X
DOI	10.1007/s12630-024-02735-z
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Article ; Online: Spatiotemporal Impact on Vegetation by Tunnel Discharging in the Jinping II Hydropower Station

Ci Song / Runqiu Huang / Xiaolu Tang

Frontiers in Earth Science, Vol

Evidence From the NDVI and GPP Monitoring Dataset of 2001–2019

2022 Volume 10

Abstract: An impact on vegetation by tunnel discharging has been a critical point for underground constructions around the world. The Jinping II hydropower station in China possesses the world’s largest karst diversion tunnel group and discharged massive ... ...

Abstract	An impact on vegetation by tunnel discharging has been a critical point for underground constructions around the world. The Jinping II hydropower station in China possesses the world’s largest karst diversion tunnel group and discharged massive groundwater during the construction period. This study assessed the effects on vegetation in the karst and non-karst areas at different stages before construction (2001–2003, BC), during construction (2004–2014, DC), and after construction (2015–2019, AC) based on the Normalized Difference Vegetation Index (NDVI) and the gross primary productivity (GPP) dataset of the moderate resolution-imaging spectroradiometer (MODIS). The regional median results of the NDVI and GPP showed that the whole vegetation was little changed by massive tunnel drainage throughout BC, DC, and AC. The NDVI and GPP were locally decreased in the first 3 years, and then recovered to the original level within next several years. Notably, the NDVI and GPP of the karst area (20 and 50% in the total area) were decreased more significantly than those of the non-karst area (8 and 20% in the total area). The factors controlling vegetation change are the development of karst and fractures, which are the conduits of groundwater flow. Therefore, massive groundwater discharge is the primary influence leading to the vegetation deterioration in the Jinping II hydropower station. The research would provide a vital reference for vegetation protection of large-scale underground construction in the world.
Keywords	groundwater discharging ; karst ; fracture ; vegetation ; spatiotemporal impact ; Jinping II hydropower station ; Science ; Q
Subject code	910
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Comparison of Healthcare Encounters and Drug Persistence in Patients With Pulmonary Arterial Hypertension Receiving Oral Selexipag, Inhaled Iloprost, or Parenteral Treprostinil

Ci Song / Peter Kunovszki / Amélie Beaudet

Journal of Health Economics and Outcomes Research (2022)

A Retrospective Database Analysis

2022

Abstract: ... rate ratio [95% CI], 0.40 [0.22, 0.75], and 0.26 ... ...

Abstract	Background: Agents targeting the prostacyclin (PGI~2~) pathway are important in managing pulmonary arterial hypertension (PAH). No head-to-head clinical trials have compared outcomes between the 3 different PGI~2~-pathway drugs most commonly available in countries with advanced healthcare: oral selexipag, inhaled iloprost, and parenteral (subcutaneous or intravenous) treprostinil. Objectives: To conduct retrospective database analyses to describe characteristics of patients with PAH initiating therapy with these agents and compare the rate and risk of healthcare facility encounters and drug persistence. Methods: Data were obtained from the Optum™ Clinformatics® Data Mart and Truven™ Health Analytics® MarketScan® Commercial Claims and Encounters databases from July 1, 2008, to September 30, 2020 (Optum™), or October 31, 2020 (Truven™). Patients were categorized into index-drug cohorts based on first pharmacy claims for selexipag, inhaled iloprost, or parenteral treprostinil. Eligible patients were ≥18 years of age with ≥1 ICD-9-CM or ICD-10-CM diagnosis code indicating pulmonary hypertension and no diagnosis code suggesting Group 3–5 pulmonary hypertension. Rates of hospitalization (inpatient admissions), emergency room visits, or outpatient visits per person-year were calculated. Drug persistence was measured as time to discontinuation of index drug. Multivariable analyses were performed to compare outcomes with selexipag vs inhaled iloprost and parenteral treprostinil, adjusting for baseline characteristics using inverse probability of treatment weighting. Results: Overall, 583 patients were included in the Optum™ sample and 482 in the Truven™ sample. Mean (SD) age was 61.7 (14.5) and 49.3 (11.3) years, respectively; 74.4% and 75.7% of patients, respectively, were women. In the pooled samples, after adjustment for baseline characteristics, selexipag had a lower risk than inhaled iloprost or parenteral treprostinil for hospitalization (relative rate ratio [95% CI], 0.40 [0.22, 0.75], and 0.26 ...
Keywords	Computer applications to medicine. Medical informatics ; R858-859.7
Subject code	610
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	Columbia Data Analytics, LLC
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Comparison of Healthcare Encounters and Drug Persistence in Patients With Pulmonary Arterial Hypertension Receiving Oral Selexipag, Inhaled Iloprost, or Parenteral Treprostinil

Ci Song / Peter Kunovszki / Amélie Beaudet

Journal of Health Economics and Outcomes Research (2022)

A Retrospective Database Analysis

2022

Abstract: ... rate ratio [95% CI], 0.40 [0.22, 0.75], and 0.26 ... ...

Abstract	Background: Agents targeting the prostacyclin (PGI~2~) pathway are important in managing pulmonary arterial hypertension (PAH). No head-to-head clinical trials have compared outcomes between the 3 different PGI~2~-pathway drugs most commonly available in countries with advanced healthcare: oral selexipag, inhaled iloprost, and parenteral (subcutaneous or intravenous) treprostinil. Objectives: To conduct retrospective database analyses to describe characteristics of patients with PAH initiating therapy with these agents and compare the rate and risk of healthcare facility encounters and drug persistence. Methods: Data were obtained from the Optum™ Clinformatics® Data Mart and Truven™ Health Analytics® MarketScan® Commercial Claims and Encounters databases from July 1, 2008, to September 30, 2020 (Optum™), or October 31, 2020 (Truven™). Patients were categorized into index-drug cohorts based on first pharmacy claims for selexipag, inhaled iloprost, or parenteral treprostinil. Eligible patients were ≥18 years of age with ≥1 ICD-9-CM or ICD-10-CM diagnosis code indicating pulmonary hypertension and no diagnosis code suggesting Group 3–5 pulmonary hypertension. Rates of hospitalization (inpatient admissions), emergency room visits, or outpatient visits per person-year were calculated. Drug persistence was measured as time to discontinuation of index drug. Multivariable analyses were performed to compare outcomes with selexipag vs inhaled iloprost and parenteral treprostinil, adjusting for baseline characteristics using inverse probability of treatment weighting. Results: Overall, 583 patients were included in the Optum™ sample and 482 in the Truven™ sample. Mean (SD) age was 61.7 (14.5) and 49.3 (11.3) years, respectively; 74.4% and 75.7% of patients, respectively, were women. In the pooled samples, after adjustment for baseline characteristics, selexipag had a lower risk than inhaled iloprost or parenteral treprostinil for hospitalization (relative rate ratio [95% CI], 0.40 [0.22, 0.75], and 0.26 ...
Keywords	Computer applications to medicine. Medical informatics ; R858-859.7
Subject code	610
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	Columbia Data Analytics, LLC
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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