Development of a Multifactor Regression Model of Ship Maneuvering Forces Based on Optimized Captive-Model Tests

2006 ◽  
Vol 50 (04) ◽  
pp. 311-333 ◽  
Author(s):  
S. Sutulo ◽  
C. Guedes Soares

The paper provides the results of model tests planned with an optimized experimental design method. Captive-model tests have been carried out according to such a design on a computerized planar-motion carriage with a model of a fast catamaran with five varying factors (drift angle, rate-of-yaw amplitude, sinkage, trim and heel angles) and with all six force/moment components measured at each run. The measured values were used after preprocessing for construction of polynomial regression models for all force components acting upon the catamaran's hulls. It is demonstrated that the optimized experimental design method allows rather complicated mathematical models for maneuvering hydrodynamics forces to be obtained from captive model tests at a reasonable level of effort.

2005 ◽  
Vol 42 (1) ◽  
pp. 90-98
Author(s):  
Hiroko Miyaji ◽  
Hirofumi Sakurai ◽  
Masayuki Kikawada ◽  
Katsuhiko Yamaguchi ◽  
Akihiro Kimura ◽  
...  

2014 ◽  
Vol 18 (5) ◽  
pp. 1714-1715
Author(s):  
Li-Li Wu ◽  
Ting-Ting Cheng ◽  
Chuan Xu ◽  
Ting Chen

The parameters of the dual slot die in an industrial melt blowing equipment are designed optimally using the orthogonal experimental design method. The air flow fields of different die parameters are simulated. Effects of the die parameters are analyzed using variance analysis. The results show that the inset distance and slot width have significant effects on the air flow field while effect of the slot angle is unremarkable.


2020 ◽  
Vol 3 (1) ◽  
pp. 48
Author(s):  
Muharidinsyah Muharidinsyah

Textbook is important for student as main media in learning Arabic and significant to teacher for teaching besides suitable method in order to achieve necessary result, is the textbooks, however, must be fit students’ level of capability and nahwu al-wadhih is one of effective textbooks for any students’ level since it offers practical study which goes along with istinbathiyah method. Thus the writer is interested in conduct research that concerns on application of nahwu al-wadhihin Darul Hikmah boarding school, and decided to entitle this research as “effectiveness in using nahwu al-wadhih and istinbathiyah method to improve students’ understanding in Arabic grammar”. The aim of this study is to reveal the effectiveness of using nahwu al-wadhih and istinbathiyah method in Darul Hikmah boarding school and to disclose students’ responses toward Arabic grammar using nahwu al-wadhih and istinbathiyah method in DarulHikmah boarding school. This research uses a quasi-experimental design method. Research instruments for this research are interview along with pre-test and post-test. Result of study indicates that using nahwu al-wadhih and istinbathiyah method is effective to improve students’ understanding in learning Arabic grammar in DarulHikmah and students’ responses in learning Arabic grammar using nahwu al-wadhih and istinbathiyah method in Darul Hikmah are enthusiastic and excited.


Sign in / Sign up

Export Citation Format

Share Document