Temporal significant wave height estimation from wind speed by perceptron Kalman filtering

The significant wave heights and periods are conventionally forecasted from the wind information on the basis of the wind-wave relationship. However, the error may become large due to many uncertainties in the wind generation prediction and wind-wave relationship. This is also confirmed by the authors, where the correlation (r) between measured wind speeds and significant wave heights is found to be 0.595 (r 2 = 0.3541). The authors have rightly mentioned the restrictive uses of regression method, especially for predicting wind generated waves. The authors have established the two layered Perceptron based on Kalman Interestingly the PKF model is a two layered network (input and output) without hidden layer. Also it is a fact that numerical or physical models have restrictions by certain assumptions and conditions, whereas artificial neural network (ANN) ha

Prediction of electric consumption using multiple linear regression methods

In the new global and local scenario, the advent of intelligent distribution networks, or Smart Grids, allows the collection of data about the operational state of the electric network in real time. Based on this data availability, the consumption prediction becomes feasible and convenient in the short term, from a few hours to a week (temporary variables). The research proposes that the method used to present the temporary variables for a system to predict electrical consumption affects the results. To verify this hypothesis, different methods for representing these variables are considered, applied to the problem of predicting daily values of electricity consumption in the city of Bogota, Colombia

Türkiye’de bulunan yoğun bakımlarda sabun, kağıt havlu ve alkol bazlı el dezenfektanı yeterli mi?: Phokai çalışması sonuçları

Introduction: Hand hygiene is one of the most effective infection control measures to prevent the spread of healthcare-associated infections (HCAI). Water, soap, paper towel and hand disinfectant must be available and adequate in terms of effective hand hygiene. The adequacy of hand hygiene products or keeping water-soap and paper towel is still a problem for many developing countries like Turkey. In this multicenter study, we analyzed the adequacy in number and availability of hand hygiene products.Materials and Methods: This study was performed in all intensive care units (ICUs) of 41 hospitals (27 tertiary-care educational, 10 state and four private hospitals) from 22 cities located in seven geographical regions of Turkey. We analyzed water, soap, paper towel and alcohol-based hand disinfectant adequacy on four different days, two of which were in summer during the vacation time (August, 27th and 31st 2016) and two in autumn (October, 12th and 15th 2016).Results: The total number of ICUs and intensive care beds in 41 participating centers were 214 and 2357, respectively. Overall, there was no soap in 3-11% of sinks and no paper towel in 10-18% of sinks while there was no alcohol-based hand disinfectant in 1-4.7% of hand disinfectant units on the observation days. When we compared the number of sinks with soap and/or paper towel on weekdays vs. weekends, there was no significant difference in summer. However, on autumn weekdays, the number of sinks with soap and paper towel was significantly lower on weekend days (p<0.0001, p<0.0001) while the number of hand disinfectant units with alcohol-based disinfectant was significantly higher (p<0.0001).Conclusion: There should be adequate and accessible hand hygiene materials for effective hand hygiene. In this study, we found that soap and paper towels were inadequate on the observation days in 3-11% and 10-18% of units, respectively. Attention should be paid on soap and paper towel supply at weekends as well

Comparison of Tc-99m MIBI and TI-201 uptake in musculoskeletal lesions

The aim of this study was to make a comparison between the uptake of Tc-99m MIBI and Tl-201 in evaluation of musculoskeletal lesions, Fourteen cases were studied, Each study consisted of a Tl-201 study followed by a Tc-99m MIBI scan, In addition, a whole-body bone scan was performed in each patient to visualize bone metastases, Tl-201 and Tc-99m MIBI uptakes were evaluated by visual assessment and by using lesion-to-background (L/B) ratio, The authors found increased Tl-201 uptake with a mean L/B ratio of 2.81 and less Tc-99m MIBI uptake with a mean L/B ratio of 2.18 in malignant lesions, Both agents showed lower uptake with mean L/B ratios of 1,6 and 1.2 in benign lesions, but there was no statistical difference between the uptakes of either Tl-201 or Tc-99m MIBI in those with malignant and those with benign lesions, In addition, false-positive imaging was observed with both Tl-201 and Tc-99m MIBI. The results demonstrated that Tl-201 and Tc-99m MIBI accumulations in musculoskeletal lesions are not specific for malignancy

Maternal age effects of aspidotus nerii bouche bouche (hemiptera: Diaspididae) on potato

Aspidiotus nerii Bouché (Hemiptera: Diaspididae) is an excellent host for rearing biological control agents for the control of scale insects. In this study, we investigated the maternal effect on the reproduction and development of A. nerii crawlers transfeffed to separate clean potato tubers at the Pt, 15th and 3O days. After the crawlers settled, each potato was divided into 4 cm2 cells surface area surrounded by 'stickem special' to prevent their escape. When all crawlers in the cell became adults, one female and all the males were left in the cells, and the rest of the females were removed. Experiments were done at 25°C, 16:8 hours and 65% relative humidity in a climate chamber. Cells were observed daily and crawlers were removed after counting. Variance analysis and Tukey's multiple range tests were applied for statistical analysis. Life table parameters were also calculated. Intrinsic rate of increase (rm), net reproductive rate (R0), and mean generation time (T0) were 0.073, 0.072 and 0.034 females/female/day, 83.42, 27.95 and 5.47 females/female, 60.56, 46.11 and 49.56 days, respectively. The total crawler numbers were the itt, 15th and 3O days age females were 208.57, 81.32 and 20.07 crawlers, respectively. These results clearly show that age does have a significant effect on crawler of females A. nerii

MATERNAL AGE EFFECTS OF ASPIDIOTUS NERII BOUCHE BOUCHE (HEMIPTERA:

Aspidiotus nerii Bouche (Hemiptera: Diaspididae) is an excellent host for rearing biological control agents for the control of scale insects. In this study, we investigated the maternal effect on the reproduction and development of A. nerii crawlers transferred to separate clean potato tubers at the 1st, 15th and 30th days. After the crawlers settled, each potato was divided into 4 cm(2) cells surface area surrounded by 'stickem special' to prevent their escape. When all crawlers in the cell became adults, one female and all the males were left in the cells, and the rest of the females were removed. Experiments were done at 25 degrees C, 16:8 hours and 65% relative humidity in a climate chamber. Cells were observed daily and crawlers were removed after counting. Variance analysis and Tukey's multiple range tests were applied for statistical analysis. Life table parameters were also calculated. Intrinsic rate of increase (r(m)), net reproductive rate (R-o), and mean generation time (T-o) were 0.073, 0.072 and 0.034 females/female/day, 83.42, 27.95 and 5.47 females/female, 60.56, 46.11 and 49.56 days, respectively. The total crawler numbers were the 1st, 15th and 30th days age females were 208.57, 81.32 and 20.07 crawlers, respectively. These results clearly show that age does have a significant effect on crawler of females A. nerii

MATERNAL AGE EFFECTS OF ASPIDIOTUS NERII BOUCHE BOUCHE (HEMIPTERA:

Aspidiotus nerii Bouche (Hemiptera: Diaspididae) is an excellent host for rearing biological control agents for the control of scale insects. In this study, we investigated the maternal effect on the reproduction and development of A. nerii crawlers transferred to separate clean potato tubers at the 1st, 15th and 30th days. After the crawlers settled, each potato was divided into 4 cm(2) cells surface area surrounded by 'stickem special' to prevent their escape. When all crawlers in the cell became adults, one female and all the males were left in the cells, and the rest of the females were removed. Experiments were done at 25 degrees C, 16:8 hours and 65% relative humidity in a climate chamber. Cells were observed daily and crawlers were removed after counting. Variance analysis and Tukey's multiple range tests were applied for statistical analysis. Life table parameters were also calculated. Intrinsic rate of increase (r(m)), net reproductive rate (R-o), and mean generation time (T-o) were 0.073, 0.072 and 0.034 females/female/day, 83.42, 27.95 and 5.47 females/female, 60.56, 46.11 and 49.56 days, respectively. The total crawler numbers were the 1st, 15th and 30th days age females were 208.57, 81.32 and 20.07 crawlers, respectively. These results clearly show that age does have a significant effect on crawler of females A. nerii