scholarly journals Further evidence of long-term thermospheric density change using a new method of satellite ballistic coefficient estimation

2011 ◽  
Vol 116 (A2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Arrun Saunders ◽  
Hugh Lewis ◽  
Graham Swinerd
Keyword(s):  
Density Change ◽  
New Method ◽  
Ballistic Coefficient ◽  
Coefficient Estimation

scholarly journals Novel robust time series analysis for long-term and short-term prediction

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hiroshi Okamura ◽  
Yutaka Osada ◽  
Shota Nishijima ◽  
Shinto Eguchi
Keyword(s):  
Robust Regression ◽  
Simulated Data ◽  
New Method ◽  
Short Term ◽  
Least Absolute Deviations ◽  
Term Prediction ◽  
Regression Approach ◽  
Short Term Prediction ◽  
Long Term Prediction

AbstractNonlinear phenomena are universal in ecology. However, their inference and prediction are generally difficult because of autocorrelation and outliers. A traditional least squares method for parameter estimation is capable of improving short-term prediction by estimating autocorrelation, whereas it has weakness to outliers and consequently worse long-term prediction. In contrast, a traditional robust regression approach, such as the least absolute deviations method, alleviates the influence of outliers and has potentially better long-term prediction, whereas it makes accurately estimating autocorrelation difficult and possibly leads to worse short-term prediction. We propose a new robust regression approach that estimates autocorrelation accurately and reduces the influence of outliers. We then compare the new method with the conventional least squares and least absolute deviations methods by using simulated data and real ecological data. Simulations and analysis of real data demonstrate that the new method generally has better long-term and short-term prediction ability for nonlinear estimation problems using spawner–recruitment data. The new method provides nearly unbiased autocorrelation even for highly contaminated simulated data with extreme outliers, whereas other methods fail to estimate autocorrelation accurately.

Exceedance Degree‐Hours: A new method for assessing long‐term thermal conditions

Indoor Air ◽  
2021 ◽  
Author(s):  
Shide Salimi ◽  
Esteban Estrella Guillén ◽  
Holly Samuelson
Keyword(s):  
Thermal Conditions ◽  
New Method

A new method for dynamically estimating long-term seepage failure frequency for high concrete faced rockfill dams

2020 ◽  
Vol 79 (10) ◽  
Author(s):  
Gang Deng ◽  
Kui Cao ◽  
Rui Chen ◽  
Yanfeng Wen ◽  
Yinqi Zhang ◽  
...  
Keyword(s):  
New Method ◽  
Seepage Failure ◽  
Failure Frequency

scholarly journals Estimating leukemia-free survival after allografting for chronic myeloid leukemia: a new method that takes into account patients who relapse and are restored to complete remission

Blood ◽  
2000 ◽  
Vol 96 (1) ◽  
pp. 86-90 ◽  
Author(s):  
Charles Craddock ◽  
Richard M. Szydlo ◽  
John P. Klein ◽  
Francesco Dazzi ◽  
Eduardo Olavarria ◽  
...  
Keyword(s):  
Stem Cell ◽  
Chronic Myeloid Leukemia ◽  
Complete Remission ◽  
Myeloid Leukemia ◽  
Chronic Phase ◽  
New Method ◽  
Free Survival ◽  
Number Of Patients ◽  
Unrelated Donors

Abstract A significant number of patients who relapse after allogeneic stem cell transplantation (SCT) for chronic myeloid leukemia (CML) will achieve sustained remissions after treatment with interferon-, second transplants, or donor lymphocyte infusions (DLI) from the original stem cell donor. Because leukemia-free survival (LFS) is at present defined as survival without evidence of relapse at any time posttransplant, patients who relapse but are then restored to complete remission are treated as failures when estimating LFS. We have established a new category of LFS, termed current LFS (CLFS), which we define as survival without evidence of leukemia at the time of most recent assessment. To gauge the contribution of treatment for relapse to the efficacy of allogeneic SCT in the management of CML in chronic phase, we compared conventional LFS and CLFS in 189 consecutive patients who underwent SCT over a 7-year period with a minimum follow-up of 3 years. Patients with sibling donors (n = 111) received cyclosporine and methotrexate as prophylaxis for graft versus host disease; patients with unrelated donors (n = 78) also received Campath-1G or 1H as intravenous T-cell depletion. The 5-year LFS defined conventionally was 36% (CI: 29% to 43%) versus a 5-year CLFS of 49% (CI: 36% to 62%). This new method of defining LFS confirms the view that appropriate “salvage” therapy, principally DLI, makes a major contribution to the capacity of allogeneic SCT to produce long-term LFS in patients who receive SCT for CML and emphasizes the importance of redefining LFS to take account of successful treatment of relapse.

Non-vascularized toe phalanx transfer for correction of severe clinodactyly of the thumb in Rubinstein–Taybi syndrome

2020 ◽  
Vol 45 (7) ◽  
pp. 715-721
Author(s):  
Marie Le Mapihan ◽  
Alina Badina ◽  
Stéphanie Pannier ◽  
Arielle Salon ◽  
Chrisophe Glorion ◽  
...  
Keyword(s):  
New Method ◽  
New Technique ◽  
Level Of Evidence ◽  
Before And After ◽  
Long Term Follow Up ◽  
Osteotomy Technique ◽  
Toe Transfer ◽  
Delta Phalanx

In Rubinstein–Taybi syndrome, patients may have a particularly severe clinodactyly of the thumb. We evaluated a new method for correction of these severe clinodactylies using non-vascularized toe phalanx transfer as a replacement for the abnormal delta phalanx. Results of the new technique are presented, together with those of an osteotomy technique. We retrospectively recorded the angle of the clinodactyly before and after surgery and at long-term follow-up of 11 osteotomies and five transfers in nine patients from 1990 to 2017. The pre-operative angle of clinodactyli was similar between the two groups with a mean of 59°. After surgery, the correction was equivalent (7° and 11°). At the last follow-up (7 and 18 years), the relapse of clinodactyly was 17° for osteotomies and 1° for phalanx transfers. We noticed growth of the transferred phalanx, resulting in an excellent thumb length. We conclude that non-vascularized toe transfer can be an effective correction of severe clinodactyly and may be more stable than osteotomy in the long-term. Level of evidence: IV

A New Method for Long-Term Intravenous Alimentation in Unrestrained Rats

1984 ◽  
Vol 8 (5) ◽  
pp. 581-584 ◽  
Author(s):  
Vasken Abrahamian ◽  
Igor Huk ◽  
Mitchel V. Kaminski
Keyword(s):  
New Method ◽  
Intravenous Alimentation
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