Empirical methods based on band ratios to infer chlorophyll-a concentration by satellite do not perform well over the optically complex waters of the St. Lawrence Estuary and Gulf. Using a dataset of 93 match-ups, we explore an alternative method relying on empirical orthogonal functions (EOF) to develop an algorithm that relates the satellite-derived remote sensing reflectances to in situ chlo...

Empirical orthogonal function (EOF) analysis has been widely used in meteorology and oceanography to extract dominant modes of behavior in scalar and vector datasets. For analysis of two-dimensional vector fields, such as surface winds or currents, use of the complex EOF method has become widespread. In the present paper, this method is compared with a real-vector EOF method that apparently has...

Using satellite-based wind and sea surface temperature (SST) observations, linear trend and interannual variability of wind stress, turbulent heat flux (Q) and wind stress curl are addressed for the Indian Ocean sector of the Southern Ocean (ISO, 0 ̊E 155 ̊E) for the period 2000-2009. The analysis reveals that spatial mean of Q varies between 70 and 73 Wm−2 in the austral summer and winter, respe...

Migration times or apparent mobilities can never be used for the identification of ionic species in capillary zone electrophoresis if an electroosmotic flow (EOF) is present, because the velocity of this flow varies considerably with the “state” of the capillary. From the migration times of the EOF and the ionic species, the effective mobilities can be calculated. These effective mobilities are...

Abstract Background The aim of this study was to investigate the safety and clinical usefulness early oral feeding (EOF) after rectosigmoid resection with anastomosis for treatment primary ovarian cancer. Methods We performed a retrospective review all consecutive patients who had undergone ovarian, tubal, or peritoneal cancer between April 2012 March 2019 in single institution. Patient-related...

Precipitation time series exhibit complex fluctuations and statistical changes. Existing research stops short of a simple feasible model for precipitation forecasting. In this article, the authors investigate forecast variations in South Korea from 1973 to 2021 using cyclostationary empirical orthogonal function (CSEOF) regression methods. First, (EOF) CSEOF analyses are used examine periodic c...

In this paper, a new method for the determination of missing values in temporal databases is presented. This new method is based on two projection methods: a nonlinear one (Self-Organized Maps) and a linear one (Empirical Orthogonal Functions). The global methodology that is presented combines the advantages of both methods to get accurate candidates for missing values. An application of the de...

It is unknown whether peginterferon (PEG-IFN) add-on to entecavir (ETV) leads to more HBsAg decline compared to PEG-IFN monotherapy or combination therapy, and whether ETV therapy may prevent HBsAg increase after PEG-IFN cessation. We performed a post hoc analysis of 396 HBeAg-positive patients treated for 72 weeks with ETV + 24 weeks PEG-IFN add-on from week 24 to 48 (add-on, n = 85), 72 weeks...

Tropical storms simulated by a nine-member ensemble of GCM integrations forced by observed SSTs have been tracked by an objective procedure for the period 1980–88. Statistics on tropical storm frequency, intensity, and first location have been produced. Statistical tools such as the chi-square and the Kolmogorov–Smirnov test indicate that there is significant potential predictability of interan...