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| 1 | Comparison of two remote sensing models for estimating evapotranspiration: algorithm evaluation and application in seasonally arid ecosystems in South Africa显示文摘Remote sensing tools are becoming increasingly important for providing spatial information on water use by different ecosystems. Despite significant advances in remote sensing based evapotranspiration(ET) models in recent years, important information gaps still exist on the accuracy of the models particularly in arid and semi-arid environments. In this study, we evaluated the Penman-Monteith based MOD16 and the modified Priestley-Taylor(PT-JPL) models at the daily time step against three measured ET datasets. We used data from two summer and one winter rainfall sites in South Africa. One site was dominated by native broad leaf and the other by fine leafed deciduous savanna tree species and C4 grasses. The third site was in the winter rainfall Cape region and had shrubby fynbos vegetation. Actual ET was measured using open-path eddy covariance systems at the summer rainfall sites while a surface energy balance system utilizing the large aperture boundary layer scintillometer was used in the Cape. Model performance varied between sites and between years with the worst estimates(R2<0.50 and RMSE>0.80 mm/d) observed during years with prolonged mid-summer dry spells in the summer rainfall areas. Sensitivity tests on MOD16 showed that the leaf area index, surface conductance and radiation budget parameters had the largest effect on simulated ET. MOD16 ET predictions were improved by:(1) reformulating the emissivity expressions in the net radiation equation;(2) incorporating representative surface conductance values;and(3) including a soil moisture stress function in the transpiration sub-model. Implementing these changes increased the accuracy of MOD16 daily ET predictions at all sites. However, similar adjustments to the PT-JPL model yielded minimal improvements. We conclude that the MOD16 ET model has the potential to accurately predict water use in arid environments provided soil water stress and accurate biome-specific parameters are incorporated. | Sebinasi DZIKITI Nebo Z JOVANOVIC Richard DH BUGAN Abel RAMOELO Nobuhle P MAJOZI Alecia NICKLESS Moses A CHO David C LE MAITRE Zanele NTSHIDI Harrison H PIENAAR | 2019 | Journal of Arid Land2019，11，4： | 4 |
| 2 | Accurate and generalizable quantitative scoring of liver steatosis from ultrasound images via scalable deep learning显示文摘BACKGROUND Hepatic steatosis is a major cause of chronic liver disease.Two-dimensional(2D)ultrasound is the most widely used non-invasive tool for screening and monitoring,but associated diagnoses are highly subjective.AIM To develop a scalable deep learning(DL)algorithm for quantitative scoring of liver steatosis from 2D ultrasound images.METHODS Using multi-view ultrasound data from 3310 patients,19513 studies,and 228075 images from a retrospective cohort of patients received elastography,we trained a DL algorithm to diagnose steatosis stages(healthy,mild,moderate,or severe)from clinical ultrasound diagnoses.Performance was validated on two multiscanner unblinded and blinded(initially to DL developer)histology-proven cohorts(147 and 112 patients)with histopathology fatty cell percentage diagnoses and a subset with FibroScan diagnoses.We also quantified reliability across scanners and viewpoints.Results were evaluated using Bland-Altman and receiver operating characteristic(ROC)analysis.RESULTS The DL algorithm demonstrated repeatable measurements with a moderate number of images(three for each viewpoint)and high agreement across three premium ultrasound scanners.High diagnostic performance was observed across all viewpoints:Areas under the curve of the ROC to classify mild,moderate,and severe steatosis grades were 0.85,0.91,and 0.93,respectively.The DL algorithm outperformed or performed at least comparably to FibroScan control attenuation parameter(CAP)with statistically significant improvements for all levels on the unblinded histology-proven cohort and for“=severe”steatosis on the blinded histology-proven cohort.CONCLUSION The DL algorithm provides a reliable quantitative steatosis assessment across view and scanners on two multi-scanner cohorts.Diagnostic performance was high with comparable or better performance than the CAP. | Bowen Li Dar-In Tai Ke Yan Yi-Cheng Chen Cheng-Jen Chen Shiu-Feng Huang Tse-Hwa Hsu Wan-Ting Yu Jing Xiao Lu Le Adam P Harrison | 2022 | World Journal of Gastroenterology2022，28，22： | 2 |
| 3 | Prognostic significance of immunohistochemical micrometastasis in node negative gastric cancer patients显示文摘 | Choe JK Goldstein M | 2000 | J Surg Oncol2000，73，3： | 1 |
| 4 | The impact of splenectomy on outcomes after resection of pancreatic adenocarcinoma显示文摘 | Schwarz RE Harrison LE Conlon KC | 1999 | J Am Coil Surg1999，188，5： | 1 |
| 5 | Growth hormone,alone and in combination with insulin,increases whole body and skeletal muscle protein kinetics in cancer patients after surgery显示文摘 | Berman RS Harrison LE Pearlstone DB | 1999 | Ann Surg1999，229，1： | 1 |
| 6 | Prognostic significance of immunohistochemical micrometastases in node-negative gastric cancer patients 显示文摘 | Harrison LE Choe JK Goldstein M | 2000 | J Surg Oncol2000，73，3： | 1 |
| 7 | Locoregional recur- rences are frequent after radiofrequency ablation for hepatocellular carcinoma显示文摘 | Harrison LE Koneru B Baramipour P | 2003 | Journal of the American College of Surgeons2003，197，5： | 1 |
| 8 | Portal vein involvement in pancreatic cancer: a sign of unresectability 显示文摘 | Harrison LE Brennan MF | 1997 | Adv Surg1997，31，： | 1 |
| 9 | Prognostic significance of immunohistochemical micrometastases in node negative gastric cancer patients显示文摘 | Harrison LE Choe Jk Goldstein M | 2004 | J Surg Oncol 20042004，73，3： | 1 |
| 10 | Early postoperative enteral nutrition improves peripheral protein kinetics in uppergastrointestinal cancer patients undergoing complete resection:A randomized trial显示文摘 | Harrison LE Hochwald SN Heslin MJ | 1997 | JPEN1997，21，4： | 1 |
| 11 | Growth hormone, alone and in combination with insulin, increases whole body and skeletal muscle protein kinetics in cancer patients after surgery 显示文摘 | Berman RS Harrison LE Pearlstone DB | 1999 | Ann Surg1999，229，1： | 1 |
| 12 | Growth hormone, alone and in combination with insulin, increases whole body and skeletal muscle protein kinetics in cancer patients after surgery显示文摘 | Harrison LE Pearlstone DB | 1999 | Ann Surg1999，229，1： | 1 |
| 13 | 1927-nm fractional thulium fiber laser for the treatment of nonfacial photodamage: a pilot study 显示文摘 | Polder KD Harrison A Eubanks LE | 2011 | Dermatol Surg2011，37，3： | 1 |
| 14 | Ecosystem dynamics based on plankton functional types for global biogeochemistry models 显示文摘 | Le Qu6rfi C Harrison S P Prentice I C | 2005 | Global Change Biology2005，11，： | 1 |
| 15 | Prognostic significance of immunohistochemical micrometastasis in node negative gastric cancer patients 显示文摘 | Choe JK Goldstein M | 2000 | J Surg Oncol2000，73，3： | 1 |
| 16 | The impact ofsplenectomy on outcomes after resection of pancreatic adenocar-cinoma显示文摘 | Schwarz RE Harrison LE Conlon KC | 1999 | J Am Coll Surg1999，188，5： | 1 |
| 17 | Effect of human growth hormone on human pancreatic carcimona growth protein and cell cycle kinetics显示文摘 | Harrison LE Dlumberg D Berman R | 1996 | J Surg Res1996，61，2： | 1 |
| 18 | Early postoperative en- teral feeding improves whole body protein kinetics in upper gastroint- esinal cancer patients显示文摘 | Hochwald SN Harrison LE Heslin M J | 1997 | Am J Surg1997，174，3： | 1 |
| 19 | Prognostic significance of immunohistochemical micmmetastases in node negative gastric cancer patients 显示文摘 | Harrison LE Choe JK Go ldstein M | 2000 | J Surg Oncol2000，73，3： | 1 |
| 20 | Pheny1 butyrate-induced apoptosis is associated with inactivation of NF-κB in HT-29 colon cancer cell显示文摘 | Feinmain R Clarke KO Harrison LE | 2002 | Cancer Chemo the pharmacol2002，49，： | 1 |
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