An Arrangement Design Framework for Ships and Offshore Plants Based on Expert System and Optimization Technique

2016 ◽  
Author(s):  
Ki-Su Kim ◽  
Myung-Il Roh ◽  
Sung-Kyoon Kim
Keyword(s):  
Expert System ◽  
Optimization Technique ◽  
Design Framework ◽  
Design Rules ◽  
The Past ◽  
Past Data ◽  
Systematic Structure ◽  
Data Missing ◽  
Ocean Environment ◽  
Offshore Plants

The arrangement design of ships and offshore plants is normally being made based on data of the past design and experts’ experiences. When performing the arrangement design, experts refer the past data and add additional requirements to the data for a new design based on their experiences. During this task, delay in design can occur due to the data missing or the absence of experts. In addition, most of ships and offshore plants are operated in the ocean environment so that spaces that can be filled with components for them are restricted. In this sense, there is a need to accumulate data regarding the past design, experts’ experiences, and design rules as a systematic structure. And a demand for optimization technique for the arrangement deign of ships and offshore plants are increasing. For this, an arrangement design framework for ships and offshore plants based on expert system and optimization technique is proposed in this study. And the proposed framework is applied to a problem with regard to the arrangement design of a small size submarine, and an FPSO topside. The results shows that the proposed framework can be used as a new tool for the arrangement design of ships and offshore plants.

scholarly journals Transfer of Knowhow and Experiences from Commercial Logistics into Humanitarian Logistics to Improve Rescue Missions in Disaster Areas

2018 ◽  
Vol 8 (3) ◽  
pp. 63
Author(s):  
Firas Rifai
Keyword(s):  
Information Technologies ◽  
Humanitarian Logistics ◽  
Management Information ◽  
Rescue Mission ◽  
Know How ◽  
The Past ◽  
Humanitarian Organizations ◽  
Past Data ◽  
Near Future ◽  
Insight Into

Reports on the news about nature or man-made catastrophes are not uncommon. We hear constantly that a human catastrophe has taken place somewhere in the world. In those cases where the infrastructure could possibly be destroyed, it becomes clear that a rescue mission is difficult to achieve. We need special rescue teams, who despite the difficult rescue mission, save lives and reduce suffering.The special organizations involved in catastrophes are called humanitarian organizations. In addition, the specific skills and abilities that these organizations have should be mainly in logistics.In this paper, the author goes into more details about humanitarian logistics and shows its importance in disaster areas. Unfortunately, these humanitarian organizations have many weaknesses and challenges. As a result, these organizations are not well developed, despite their importance. In contrast, the commercial logistics companies, which are well developed, have much strength in management, information technologies, etc.This research defines humanitarian logistics and describes its weaknesses and limitations. Furthermore, it deals with the specifics of humanitarian organizations. The special features of these organizations are their rescue missions, especially in destroyed infrastructure areas. This research demonstrates the various similarities between commercial and humanitarian logistics and points to the potential of knowledge and experience transfer from commercial logistics to humanitarian logistics.This research compares humanitarian logistics with commercial logistics. In doing so, the author tries to gain a deeper insight into the potential of transferring know-how and experience from retail logistics to humanitarian logistics in order to strengthen humanitarian logistics.The research of logistics is a very dynamic world in which humanitarian logistics is becoming increasingly important both in research and in practice. In particular, the demands on logistics in general and on humanitarian logistics, in particular, will increase significantly in the near future because it is estimated that the number and impact of both natural and human disasters is increasing (Kumar et al., 2012).Murphy (2015) analyzed the past data of catastrophes and derived a forecast for the future frequency of disasters and their impact: “Because of the increasing frequency (and severity) of disasters over the past 50 years, humanitarian logistics is likely to be an important topic into the foreseeable future”.

scholarly journals Does the Forty Year’s Success Myth of the Korea Shipbuilding Industry Come to an End?

2017 ◽  
Vol 3 (2) ◽  
pp. 151
Author(s):  
Hong-Yul Jeong
Keyword(s):  
Financial Crisis ◽  
National Economy ◽  
Global Financial Crisis ◽  
Ripple Effect ◽  
Shipbuilding Industry ◽  
The Past ◽  
The Global Financial Crisis ◽  
Key Industries ◽  
Offshore Plants ◽  
Future Plans

<p><em>Shipbuilding industry, having a great ripple effect on national economy, has been fostered by some countries as the national key industries. Korea also has supported shipbuilding industry as one of the industries politically fostered by the state. Accordingly, the shipbuilding industry of Korea has started to developed since 1970’s, reaching the world’s top position in 2000</em><em>’</em><em>s with reference to all the relevant indices.</em></p><p><em>However, after the global financial crisis in 2008, the shipbuilding industries of Korea focused on offshore plants, resulting in huge deficit and being outranked by China.</em></p><p><em>In this article, the past growing procedure of Korea’s shipbuilding industry was briefly reviewed, and the future plans for regaining the past glories as the shipbuilding power were sought.</em><em></em></p>

scholarly journals Vestige of The Ancient Estuarine of Cisaar Valley, Sumedang as One of the Pleistocene Fossil Bearing Site in West Jawa

2019 ◽  
Vol 8 (2) ◽  
pp. 65-80
Author(s):  
Unggul Prasetyo Wibowo ◽  
Anton Ferdianto ◽  
Nurul Laili ◽  
Dida Yurnaldi ◽  
Ruli Setiawan
Keyword(s):  
Depositional Environment ◽  
Sedimentary Rocks ◽  
Estuarine Environment ◽  
Shallow Marine ◽  
East Part ◽  
The Past ◽  
Braided Channel ◽  
Freshwater Mollusk ◽  
Past Data

Cisaar Valley is located on the east part of Sumedang Regency, West Jawa Province. It’s close to the boundary of Sumedang-Majalengka Regency. In this location the sandy and clay dominated sedimentary rocks are well exposed along the outcrops in the Cisaar Valley. These sedimentary rocks is inferred from Pliocene-Pleistocene deposits from Kaliwangu and Citalang Formation. Foraminifera microfossil that commonly used for interpretation of depositional environment is rarely found, whereas freshwater mollusk and vertebrate fossils often found in the sediment rocks of this area.  This condition raises a question, what is the environment of this valley in the past? Data obtained from measured stratigraphic sections along Cisaar river and its tributary rivers in Cibengkung and Cirendang hamlets, Jembarwangi village. There are at least three depositional paleoenvironments which from old to young are: shallow marine, estuarine and fluviatil braided channel depositional paleoenvironment.  Characteristics of the lower, middle and upper of the estuarine environment were found in this Cisaar Valley as the evidences of the oceanic regression processes was happened in the past in this area. 

Dynamics in Knowledge

2012 ◽  
pp. 1595-1612 ◽  
Author(s):  
Shigeki Sugiyama
Keyword(s):  
Artificial Intelligence ◽  
Expert System ◽  
Problem Solving ◽  
Small Area ◽  
Social Study ◽  
Engineering Science ◽  
The Past ◽  
Intelligent Software ◽  
System Method ◽  
Modern Engineering

Since the idea of “artificial intelligence with knowledge” had been introduced, so many thoughts, theories, and ideas in various fields of engineering, science, geology, social study, economics, and management methods have been proposed. Those things have been started as an extension of modern engineering control theories and practices. Firstly, expert system by using IF-Then rules came up to at a production spot in manufacturing, and then agent system method by using intelligent software programs for design, planning, scheduling, production, and management in manufacturing. And then after, the idea of “Knowledge” burst into the artificial intelligence field as a real aid for getting any purpose to be accomplished by having augmented the past key knowledge in terms of management (controlling). However, those augmented knowledge methods used to have usages only in a limited small area. In addition to this, lots of works have to be done before making the systems work for a target problem solving. And what is worse, lots of parts of systems have to be customized for a new application. This chapter introduces a new direction and a method in “Knowledge” by inaugurating the brand new idea of “Dynamics in Knowledge,” which will behave more flexibly and intelligently in real usages.

scholarly journals On the Computation of Accurate Earth Rotation by the Classical Astronomical Method

1979 ◽  
Vol 82 ◽  
pp. 109-114
Author(s):  
Martine Feissel
Keyword(s):  
Earth Rotation ◽  
Practical Knowledge ◽  
Universal Time ◽  
New Techniques ◽  
Astronomical Observations ◽  
The Past ◽  
Past Data

Improved series of Universal Time and latitude measurements back to 1962 have been provided to the BIH by several observatories recently. New techniques are currently or will soon provide Earth rotation data that are independent from the classical astronomical observations. In the meantime, the BIH has acquired experience on possible methods for achieving better accuracy. These reasons make it worthwhile to apply our present practical knowledge to the past data. The method which will be used for computing Earth rotation data from the updated BIH files is presented.

scholarly journals The Constitutionality of §89a IIa of the German Criminal Code and the Concept of a Serious Violent Offense Endangering the State: The German Federal Court of Justice Decision of April 6, 2017—3 StR 326/16

2020 ◽  
Vol 21 (4) ◽  
pp. 775-786
Author(s):  
Anne-Sophie Zaunseder ◽  
Michelle Heblik
Keyword(s):  
Federal Court ◽  
Criminal Code ◽  
Legal Issues ◽  
The Past ◽  
Violent Offense ◽  
Court Of Justice ◽  
Short Summary ◽  
Basic Law ◽  
Federal Court Of Justice ◽  
Systematic Structure

AbstractThis Article discusses the constitutionality of the recently implemented § 89a IIa of the German Criminal Code (Strafgesetzbuch—StGB) on the basis of the case 3 StR 326/16 decided by the Federal Court of Justice (BGH) on April 6, 2017. First, this Article introduces § 89a IIa of the StGB with a short summary of the events leading to the present anti-terrorist legislation in Germany and the development of the legislation over the past few decades. Second, the facts of the BGH’s case will be outlined, and an overview of the systematic structure of § 89a I, II No. 1, IIa StGB will be provided. Within this framework, the constitutionality of § 89a IIa StGB will be discussed, focusing on the prerequisite of appropriateness, with special attention paid to the requirement of reasonability and the prerequisite of legal certainty pursuant to Article 103(II) Basic Law (Grundgesetz—GG). Finally, § 89a I, II No. 1, IIa StGB will be applied to the BGH’s case after discussing the contentious legal issues regarding these doctrines. This Article concludes by discussing the BGH’s decision, which deems § 89a IIa StGB to be constitutional.

Knowledge-acquisition tools with explicit problem-solving models

1993 ◽  
Vol 8 (1) ◽  
pp. 5-25 ◽  
Author(s):  
William Birmingham ◽  
Georg Klinker
Keyword(s):  
Expert System ◽  
Problem Solving ◽  
Expert Systems ◽  
Knowledge Acquisition ◽  
Knowledge Base ◽  
Code Generation ◽  
System Development ◽  
Generalization Error ◽  
Domain Experts ◽  
The Past

AbstractIn the past decade, expert systems have been applied to a wide variety of application tasks. A central problem of expert system development and maintenance is the demand placed on knowledge engineers and domain experts. A commonly proposed solution is knowledge-acquisition tools. This paper reviews a class of knowledge-acquisition tools that presuppose the problem-solving method, as well as the structure of the knowledge base. These explicit problem-solving models are exploited by the tools during knowledge-acquisition, knowledge generalization, error checking and code generation.

Development for the Optimization Technique of the Coiling Tension in Degreasing Unit

2011 ◽  
Vol 84-85 ◽  
pp. 342-346
Author(s):  
Zhen Hua Bai ◽  
Qing Tian Zhou ◽  
Xiao Dong Shi ◽  
Hong Xin Si ◽  
Gao He ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Optimization Technique ◽  
Constraint Condition ◽  
Fully Integrated ◽  
Quadratic Curve ◽  
The Past ◽  
Tabular Method ◽  
First Time ◽  
Coiling Tension ◽  
Improve Production Efficiency

As to the production of degreasing unit, fully integrated with the equipment and technological features of the line, the approach for the setting of coiling tension was changed, which was mainly tabular method in the past. Under the new idea, the degreasing process was closely integrated with the bell-type annealing for the first time. Then, to minimize the severity of stick breaks was set as the objective function, and no loose coil and no heart-shaped coil is took as the constraint condition. On these bases, a new comprehensive optimization model for the setting of coiling tension in degreasing unit was put forward. The relation between coiling tension and coil radius was obtained, which was a quadratic curve. This simple and practical technology can make the distribution of internal stress of coil more reasonable, and reduce the incidence of stick breaks, loose coil and heart-shaped coil defects effectively and improve production efficiency, quality and the metal yield.

Tip-Fillet Interference in Cylindrical Gears

2003 ◽  
Author(s):  
Jan Willem Polder ◽  
Hans Broekhuisen
Keyword(s):  
Gear Pair ◽  
Design Rules ◽  
Modern Design ◽  
Geometrical Condition ◽  
Free Distance ◽  
Cylindrical Gears ◽  
The Past ◽  
Arbitrary Position

The occurrence of severe tip-fillet interference which could not be explained by existing formulas, and the tendency of modern design rules to go up to the geometrical limits, were reasons to develop three new views. The old geometrical condition proved to be incorrect. It required the usable flank to exceed the active flank, which guarantied only a correct mating on the line of action. However, while the involute flanks are mating regularly in an arbitrary position, then outside the line of action the tip of the pinion may penetrate the fillet of the mating gear. The possible tip-fillet interference is not restricted to one single position, but takes up a certain part of the path of action. The deduction of a completely new geometrical condition was based on a positive free distance between tip and fillet in each position. Secondly, a condition based exclusively on nominal dimensions did not suffice. The neglect of inaccuracies and deformations was as irresponsible as neglecting functional backlash in any conventional gear pair. Emphatically, the geometrical condition has to answer the same influences. Therefore, a new algorithm includes a relation with maximal backlash. Thirdly, by introducing a quality dependent backlash function in a geometrical condition, there will be more necessity to standardize a clear backlash-related tolerance system than in the past was required for the minimal functional backlash.

Sign in / Sign up

Export Citation Format

Share Document