Development of Automatic Marking Generation System for Plate Forming by Line Heating

1996 ◽  
Vol 12 (04) ◽  
pp. 247-253
Author(s):  
Joo-Sung Lee

An algorithm is introduced which can generate the marking data for steel plate forming by line heating. A relatively simple mechanical model is adopted which can implicitly represent the complex physical phenomena of line heating. The general concept of the proposed algorithm is described and is applied to three types of surface models to show its validity and applicability. It is found that the proposed marking generation algorithm gives reasonable results of marking data where the estimated surface shows a nice agreement with the given surface. It can be said, therefore, that the proposed algorithm may be one of the feasible ways toward automation of plate forming by line heating. This paper ends with a brief discussion of the results and reference to the more general applicability of the present marking generation algorithm.

2011 ◽  
Vol 421 ◽  
pp. 250-253
Author(s):  
Hu Zhu ◽  
Xiao Guang Yang

To lay the foundation of the automation for line heating forming, a method for heating path generation and simulation for ship plate steel base on STL mode was proposed in this paper. The line heating path was generated by slicing the STL model of the steel plate using a series of planes, and the models of the heating equipment of ship plate steel were build, and the heating process of ship plate steel can be simulated by inputting the models of the heating equipment into the simulation system that was built by using VC++ and OpenGL. The case study shows that the method can primely solve the inconvenient of manual heating and the whole heating process can be observed by the simulation so that the heating process can be made a reasonable monitoring, and the heating path generation and simulation software are runs stably and reliably.


Author(s):  
Yutong Wang ◽  
Jiyuan Zheng ◽  
Qijiong Liu ◽  
Zhou Zhao ◽  
Jun Xiao ◽  
...  

Automatic question generation according to an answer within the given passage is useful for many applications, such as question answering system, dialogue system, etc. Current neural-based methods mostly take two steps which extract several important sentences based on the candidate answer through manual rules or supervised neural networks and then use an encoder-decoder framework to generate questions about these sentences. These approaches still acquire two steps and neglect the semantic relations between the answer and the context of the whole passage which is sometimes necessary for answering the question. To address this problem, we propose the Weakly Supervision Enhanced Generative Network (WeGen) which automatically discovers relevant features of the passage given the answer span in a weakly supervised manner to improve the quality of generated questions. More specifically, we devise a discriminator, Relation Guider, to capture the relations between the passage and the associated answer and then the Multi-Interaction mechanism is deployed to transfer the knowledge dynamically for our question generation system. Experiments show the effectiveness of our method in both automatic evaluations and human evaluations.


2021 ◽  
Author(s):  
◽  
Ariana Pia

<p>This research questions whether considering Māori concepts of architecture and space within the design of New Zealand prisons can help in the rehabilitation process of inmates of Māori descent.   First, the general concept of prison architecture will be researched. The panopticon as a general diagram as well as specific case studies will frame an understanding of the characteristics of prison architecture in the western sphere. A specific attention to interior architecture will be established.  Second, the link between cultural experience and rehabilitation will be distinguished primarily through analysis of Māori Focus Units.  Third, the notions of Māori perception and understanding of architectural space will be explored in a general context. More particularly, characteristics of interior architecture will be researched.  Fourth, a site will be selected to reflect the contentious issues of incarceration of the Māori population. Matiu/Somes Island, located in the Wellington harbour, is a reflection of historical Māori culture and lifestyles that form a base of beliefs and mythology that modern Māori can identify with. The island itself is a provocation due to its history of incarceration.  This thesis is of interior architecture; hence the design will be developed within the constraints of a given architectural envelope. While this is an assumed position, the interior architecture will challenge the given envelope and its contextual site. As a consequence, further interventions into the landscape and the architecture will be developed to sustain the interior architecture here developed.  It is anticipated that this research will therefore support the idea that interior architecture of New Zealand prisons must be developed as an integral part of a holistic spatial intervention in view of supporting the rehabilitation process of Māori inmates.</p>


2021 ◽  
Author(s):  
◽  
Ariana Pia

<p>This research questions whether considering Māori concepts of architecture and space within the design of New Zealand prisons can help in the rehabilitation process of inmates of Māori descent.   First, the general concept of prison architecture will be researched. The panopticon as a general diagram as well as specific case studies will frame an understanding of the characteristics of prison architecture in the western sphere. A specific attention to interior architecture will be established.  Second, the link between cultural experience and rehabilitation will be distinguished primarily through analysis of Māori Focus Units.  Third, the notions of Māori perception and understanding of architectural space will be explored in a general context. More particularly, characteristics of interior architecture will be researched.  Fourth, a site will be selected to reflect the contentious issues of incarceration of the Māori population. Matiu/Somes Island, located in the Wellington harbour, is a reflection of historical Māori culture and lifestyles that form a base of beliefs and mythology that modern Māori can identify with. The island itself is a provocation due to its history of incarceration.  This thesis is of interior architecture; hence the design will be developed within the constraints of a given architectural envelope. While this is an assumed position, the interior architecture will challenge the given envelope and its contextual site. As a consequence, further interventions into the landscape and the architecture will be developed to sustain the interior architecture here developed.  It is anticipated that this research will therefore support the idea that interior architecture of New Zealand prisons must be developed as an integral part of a holistic spatial intervention in view of supporting the rehabilitation process of Māori inmates.</p>


2012 ◽  
Vol 544 ◽  
pp. 268-273
Author(s):  
Lei Yang ◽  
Liang Gao

Line heating is the main method for forming compound curved shells of hull. The accuracy of final deformation and the productivity depend on the experience of the workers. To predict the plate deformation, the explicit mathematical model for deformation and the main influencing factors by FEA and GEP is established in this paper. The main influencing factors in line heating process were analyzed firstly. Then, 16 group deformation results of steel plate under the five main influencing factors were obtained by FEA. At last, the explicit mathematical model for deformation and the main influencing factors was established.


Materia Japan ◽  
2009 ◽  
Vol 48 (1) ◽  
pp. 26-28
Author(s):  
Keiji Ueda ◽  
Shinichi Suzuki ◽  
Shinji Mitao ◽  
Takayuki Ito ◽  
Teruhisa Kinugawa

Author(s):  
Sevil M. Radjabova ◽  

Article deals with the changes of the meanings of the post nominal adjectives in the process of transformation in the modern English language. On the basis of the linguoculturological approach and the method of linguistic analysis, the characteristic features of the change in the meanings of post-nominative adjectives in the English language have been revealed. In the English language the adjectives can perform the function of predicative. For the semantics of the adjectives which have the predicative function, these adjectives are characterized by inner qualitative diversity. Mainly, qualitative adjectives refer to classical predication and denote the feature of the object directly. Such adjectives have more features of predication. The predicative sign of the adjective, the presence of a connotation of subjective assessment determines its semantics and use. There are differences between the constructions used in the predicate function in phrases that perform the function of the subject and in the altered form of word phrases related attributively and predicatively. The predicative relation is the immunest form of syntactic connection and in predicative connectives the structural restriction in comparison with attributive constructions is extremely limited. Adjectives as predicative words do not have denotation and reference, they have no denoter, there is a signification. Basing on their indicative characteristics, it is possible to present all the possible semantic features. For the English language it is characteristic the use of the attribute before the defined word. The development from a special sign of thought to a general concept is characteristic for the whole structure of the English language; it is even possible to observe it in word formation. In most cases, taking into account the use of the adjective in the function of an attribute, the terms like postpositional (post nominal) and prepositional (prenominal) adjectives are used. The reasons for the change in the position of adjectives should be sought not always in the nature of the adjective, but in the degree to which it determines its referent. The semes that make up the meaning of the word are at different levels and are more or less stable. In adjectives, the nuclear seme, or subseme, is always found next to the differential seme. In other words, the adjective cannot be combined with nouns in all semantic groups. When an adjective is combined with a noun, a background is formed that allows or prevents the actualization of a particular seme. This causes the activation of a specific seme associated with the semantics of the given name in combination with the given name. Such semes are reflected in the join semantics. The opposite can also be said. The adjective itself chooses the noun for word formation. After all, the same adjective behaves differently in relation to transformation into different attributive complexes. In our opinion, adjectives act as an important restrictive informative element at the content level.


2011 ◽  
Vol 214 ◽  
pp. 472-476
Author(s):  
Jian Xin Zhang ◽  
Ai Hua Gao

Influence of the off line heating treatment parameter on the microstructure of a high strength steel plate was studied system previously. However, the information about the effect of on-line heating treatment process on ultra-high steel plate, especially on the plate with a tensile strength 980MPa or above, is limited due to the lack of effective method to simulation for the on-line heating treatment process. A method, which is preformed with a thermo-mechanical simulator, simulation the parameter of on-line heating treatment on the microstructure evolution a high strength ULCB steel plate after the accelerated cooling. By means of observation the original microstructure and microstructure morphologies varied with the parameter of the on-line heating treatment process, the present results demonstrate the microstructure characterizations before and after heating treatment process, while also the distribution of M(C, N) particles on lath boundaries or lath interior and the volume fraction and the average size of M/A island.


1990 ◽  
Vol 22 (12) ◽  
pp. 309-317 ◽  
Author(s):  
J. E. Alleman ◽  
E. H. Bryan ◽  
T. A. Stumm ◽  
W. W. Marlow ◽  
R. C. Hocevar

This paper will examine the general concept of using sludge during brick manufacture, and will specifically address the fate of metals contained within the employed sludge relative to the vitrification process. Overall, it appears that most metals will be trapped within sludge-adulterated brick, both during firing and weathering. This behavior appears related to a silicate-based physico-chemical containment mechanism. Volatilization of metal during firing was observed in the case of selenium, and in this instance only for specimens spiked with elevated metals levels (i.e. 1000 ppm Se). Simulated weathering in pH=2.5 and pH=5.0 acetic acid resulted in nominal leachate losses beyond the U.S. EPA extraction procedure limits for arsenic, selenium, and cadmium. Here again, though, these marginally elevated losses were only observed for those bricksspiked with extremely high metals levels (i.e. 1000 ppm, or higher). Overall, the research findings presented by this paper suggest that standard municipal sludges laden with “normal” metal levels could be satisfactorily incorporated within a brick manufacturing process with little concern regarding metal release. As for hazardous metal-laden sludges, brick manufacture may comprise a similarly acceptable sludge management option; however, this latter strategy would likely warrant additional site-specific investigation prior to implementation (i.e. relative to the given metal species, concentrations, metal release characteristics, etc).


2003 ◽  
Vol 125 (4) ◽  
pp. 794-800 ◽  
Author(s):  
Jong Gye Shin ◽  
Jong Hun Woo

Line heating (LH) is a method of forming curved thick plates. Residual deformation of a steel plate is obtained by applying heat to the plate. Heat transfer analysis between a torch and the steel plate is essential to control the residual deformation of the steel plate in LH. This paper presents an analysis of the heat transfer during LH. The mechanism of combustion flame from a torch is simplified as an impinging gas jet. A turbulent thermal fluid flow analysis is employed to determine the temperature field. Results of numerical and experimental approaches are compared to verify the proposed analysis procedure. The parametric analysis shows that the nozzle diameter and the tip clearance are the important factors of the heat flux induced by the flame.


Sign in / Sign up

Export Citation Format

Share Document