Wyniki wyszukiwania - BazTech

1

Prediction of a newbuilding proce of the bulk carriers based on gross tonnage gt and main engine power

Cepowska Ż., Cepowski T.

Management Systems in Production Engineering

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2017

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nr 1 (25)

42--45

EN

The paper presents mathematical relationships that allow us to forecast the newbuilding price of new bulk carriers, based on data concerning vessels built in 2005-2015. The presented approximations allow us to estimate the price based on a gross tonnage capacity and a main engine power The approximations were developed using linear regression and the theory of artificial neural networks. The presented relations have practical application for estimation of bulk carrier newbuilding price needed in preliminary parametric design of the ship. It follows from the above that the use of artificial neural networks to predict the price of a bulk carrier brings more accurate solutions than linear regression.

PL

W publikacji przedstawiono matematyczne zależności pozwalające na prognozowanie ceny budowy masowców budowanych w latach 2005-2015. Przedstawione aproksymacje pozwalają na oszacowanie ceny w oparciu o pojemność rejestrową GT i moc napędu. Aproksymacje zostały opracowane przy wykorzystaniu regresji liniowej i teorii sztucznych sieci neuronowych. Przedstawione zależności mają praktyczne zastosowanie do szacowania ceny budowy masowca dla potrzeb wstępnego parametrycznego projektowania statku. Z badań wynika, że zastosowanie sztucznych sieci neuronowych do prognozowania ceny masowca przynosi dokładniejsze rozwiązania niż wykorzystanie regresji liniowej.

2

Seakeeping software for the analysis of a ship’s seaworthiness

Cepowska Ż., Cepowski T.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

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2015

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nr 42 (114)

95--100

EN

The article presents the Seakeeping research software, developed for the computation of a ship’s motions in regular and irregular waves on the basis of the following ship parameters: length between perpendiculars, beam, draught, block coefficient and transverse initial metacentric height. The software implements approximating functions of amplitude-phase characteristics of rolling, heaving, and pitching, developed by the author by means of artificial neural networks. The software determines transfer functions for the phenomena accompanying the rolling motion, such as slamming, green water, propeller surfacing, vertical acceleration forward and on the bridge. The article discusses possible uses of the software in scientific research, ship design and operation, and for educational purposes.

3

The “Fast Stability” computer program used for training in maritime schools

Cepowska Ż., Cepowski T.

Zeszyty Naukowe / Akademia Morska w Szczecinie

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2014

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nr 39 (111)

47--52

EN

This paper presents computer software “FastStability”. The software has been developed for all kind of vessels and calculates stability with many additional options. The “Fast Stability” program is used in Post- Secondary Maritime School in Szczecin in education purpose.

4

The computer software “Egzamin” for the assessment of education in the maritime schools

Cepowska Ż., Cepowski T.

Zeszyty Naukowe / Akademia Morska w Szczecinie

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2013

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nr 35 (107)

11--14

EN

This paper presents innovative software “Egzamin” for examination used in Post-Secondary Maritime School in Szczecin. Presented software, unlike other similar programs, allows the assessment of student skills based on the task as a test of closed and open. The software is based on a databases working in the computer local network. The software is allowed to backup all exams including student’s personal data, evaluation of all responses and time taken to solve each task. The software can also be used in e-learning.