Research on Information Extraction in Pipe-Routing Layout Space for Complex Products

2012 ◽  
Vol 155-156 ◽  
pp. 250-254
Author(s):  
Xiao Lan Bai ◽  
Yu Zhang
Keyword(s):  
Information Extraction ◽  
Free Space ◽  
Extraction Method ◽  
Spatial Information ◽  
The State ◽  
Complex Products ◽  
Pipe Routing ◽  
Aero Engines ◽  
Flow Of Information

The extraction of information in the layout space is a basis and key to realize automatic pipe-routing layout for complex products such as aero-engines. This paper proposes the filling-surrounding spatial information extraction method. The layout space was first divided into several regions according to the location of accessories, which resulted in the parallel extraction of information in the layout space. Then by means of the filling idea, accessories in each region were filled one by one. After accessories’ rough containing boxes were determined, each accessory and free space was represented with discrete points by using grids to divide the rough containing box. Finally, the outside-in surrounding scanning was used for the rough containing box to identify the state of spatial points. In addition, the flow of information extraction and the storage mode of the extracted information were given. The case study illustrates its feasibility and effectiveness.

Engineering Rules-Based Orthogonal and Variable-Steps Pipe Routing Algorithm for Aero-Engines

2012 ◽  
Vol 442 ◽  
pp. 104-108
Author(s):  
Xiao Lan Bai ◽  
Yu Zhang
Keyword(s):  
Routing Algorithm ◽  
Specific Flow ◽  
Memory Space ◽  
Fast Search ◽  
3D Space ◽  
Cylindrical Coordinate ◽  
Pipe Routing ◽  
Search Speed ◽  
Aero Engines

Pipe routing is to design the routes for pipes in 3D space, meeting various constraints and engineering rules. This paper proposes the engineering rules-based orthogonal and variable-steps pipe routing algorithm. Firstly, the cylindrical coordinate system was adopted to describe the layout space and obstacles. In view of two endpoints of the pipe and obstacles in between, the local searching space was built. Then, the searching algorithm was given according to engineering rules, which was involved with the orthogonal searching directions and their order, the searching variable-steps. Moreover, the specific flow of this algorithm was described. The algorithm requires less memory space and has a fast search speed. The case study shows it is feasible and effective.

scholarly journals Auditing the State: Everyday Forms of Institutional Resistance in the Mexican Freedom of Information Process

2020 ◽  
Author(s):  
Guillén Torres
Keyword(s):  
Recent Trend ◽  
The State ◽  
Freedom Of Information ◽  
Information Control ◽  
Information Process ◽  
Liberal Democracies ◽  
Flow Of Information ◽  
Scholarly Attention

Governmental transparency through Freedom of Information (FOI) Laws has become a standard in modern liberal democracies. However, a recent trend documented by practitioners and academics alike consists of governments stating in paper their support for transparency, but in practice implementing various kinds of strategies to limit the flow of information towards engaged citizens, increasing secrecy and opaqueness. While scholarly attention has mostly been set on the motivations and effects of secrecy within institutions, the consequences experienced by politically engaged citizens have received less interest. In this paper I focus on how information activists experience and make sense of instances of information control during the performance of the FOI process, through a case study set in Mexico. I suggest that the constant denials, delays and obstructions activists face during the process of requesting information can be productively analyzed through the concept of Everyday Forms of Resistance.

Research on the Automatic and Optimized Pipe Routing Layout for Aero-Engines Based on Improved Artificial Fish Swarm Algorithm

2013 ◽  
Vol 437 ◽  
pp. 275-280 ◽  
Author(s):  
Yu Zhang ◽  
Xiao Lan Bai
Keyword(s):  
Rapid Development ◽  
Local Optimum ◽  
Artificial Fish Swarm Algorithm ◽  
Pipe Routing ◽  
Aero Engine ◽  
Artificial Fish Swarm ◽  
Swarm Algorithm ◽  
Aero Engines ◽  
The Mathematical Model

With the rapid development of aerospace industries, how to realize the automatic and optimized pipe-routing layout for the aero-engine has become a hot issue to be urgently solved. For the issue, a novel automatic and optimized pipe-routing layout method based on the improved artificial fish swarm algorithm was put forward in this paper. First, the mathematical model of the pipe-routing layout problem was established. Then, in view of the deficiencies of the artificial fish swarm algorithm,chaos mutation was used to carry out easy and rapid searching as well as robust escape from the local optimum,and gradient setting was used to raise the convergence speed and the solving accuracy.Further, the improved artificial fish swarm algorithm was applied to the pipe-routing layout for the aero-engine. At the end, the effectiveness and feasibility of the proposed method was proved by a case study.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

Varied Responses to Human-Induced Seismicity in the City of Azle, Texas

2019 ◽  
Vol 3 (1) ◽  
pp. 1-8
Author(s):  
Sarmistha R. Majumdar
Keyword(s):  
State Government ◽  
Induced Seismicity ◽  
Oil And Gas ◽  
The United States ◽  
The State ◽  
Prior History ◽  
Small Community ◽  
Regulatory Policies ◽  
The Status

Fracking has helped to usher in an era of energy abundance in the United States. This advanced drilling procedure has helped the nation to attain the status of the largest producer of crude oil and natural gas in the world, but some of its negative externalities, such as human-induced seismicity, can no longer be ignored. The occurrence of earthquakes in communities located at proximity to disposal wells with no prior history of seismicity has shocked residents and have caused damages to properties. It has evoked individuals’ resentment against the practice of injection of fracking’s wastewater under pressure into underground disposal wells. Though the oil and gas companies have denied the existence of a link between such a practice and earthquakes and the local and state governments have delayed their responses to the unforeseen seismic events, the issue has gained in prominence among researchers, affected community residents, and the media. This case study has offered a glimpse into the varied responses of stakeholders to human-induced seismicity in a small city in the state of Texas. It is evident from this case study that although individuals’ complaints and protests from a small community may not be successful in bringing about statewide changes in regulatory policies on disposal of fracking’s wastewater, they can add to the public pressure on the state government to do something to address the problem in a state that supports fracking.

Islamic and Jewish Religious Feminists Tackle Islamic and Jewish Oral Law: Maintenance and Rebellion of Wives

2017 ◽  
Vol 11 (1) ◽  
pp. 35-63
Author(s):  
Ruth Roded
Keyword(s):  
State Policy ◽  
Political System ◽  
Daily Life ◽  
The State ◽  
The Political ◽  
Jewish Law ◽  
Modern Times ◽  
Parallel Case ◽  
First Time

Beginning in the early 1970s, Jewish and Muslim feminists, tackled “oral law”—Mishna and Talmud, in Judaism, and the parallel Hadith and Fiqh in Islam, and several analogous methodologies were devised. A parallel case study of maintenance and rebellion of wives —mezonoteha, moredet al ba?ala; nafaqa al-mar?a and nush?z—in classical Jewish and Islamic oral law demonstrates similarities in content and discourse. Differences between the two, however, were found in the application of oral law to daily life, as reflected in “responsa”—piskei halacha and fatwas. In modern times, as the state became more involved in regulating maintenance and disobedience, and Jewish law was backed for the first time in history by a state, state policy and implementation were influenced by the political system and socioeconomic circumstances of the country. Despite their similar origin in oral law, maintenance and rebellion have divergent relevance to modern Jews and Muslims.

The application of E-commerce among small medium enterprises : a case study in Kelantan

2007 ◽  
Vol 4 (2) ◽  
pp. 45
Author(s):  
Norudin Mansor ◽  
Che Ismail Long ◽  
Ahmad Ismail Mohd. Annuar
Keyword(s):  
Competitive Advantage ◽  
General Assumption ◽  
The State ◽  
Business Community ◽  
Research Project ◽  
Business Decision ◽  
Small Medium Enterprises ◽  
Medium Enterprises

The research project was conducted to investigate the understanding of E-commerce Application among the SMEs in the state of Kelantan. Focusing on the population of registered members of Dewan Perniagaan Melayu Malaysia, Kelantan, a total of302 respondents were selected to participate in our study. Moving in line with the general assumption of world business community it is agreed that e-commerce application is highly relevant for the survival and meeting the challenges of borderless economy. At the same time, the process of acquiring knowledge and understanding the environment, coping with changes, and speeding up the business decision, able to further enhance the competitive advantage of the SMEs. Using the established model, our investigation focused on 5 identifiable variables to demonstrate its usefulness towards motivating SMEs to adopt e-commerce. Our analysis indicated that all the selected variables were significant towards enhancing the application of e-commerce and thus maintaining competitive advantage in the industry.

Analysis of geodetic and legal documentation in the process of expropriation for roads. Krakow case study

2013 ◽  
Vol 62 (1) ◽  
pp. 67-84
Author(s):  
Anna Trembecka
Keyword(s):  
Local Government ◽  
Legal Status ◽  
The State ◽  
Property Value ◽  
Real Property ◽  
Construction Design ◽  
Special Rules ◽  
The City

Abstract Amendment to the Act on special rules of preparation and implementation of investment in public roads resulted in an accelerated mode of acquisition of land for the development of roads. The decision to authorize the execution of road investment issued on its basis has several effects, i.e. determines the location of a road, approves surveying division, approves construction design and also results in acquisition of a real property by virtue of law by the State Treasury or local government unit, among others. The conducted study revealed that over 3 years, in this mode, the city of Krakow has acquired 31 hectares of land intended for the implementation of road investments. Compensation is determined in separate proceedings based on an appraisal study estimating property value, often at a distant time after the loss of land by the owner. One reason for the lengthy compensation proceedings is challenging the proposed amount of compensation, unregulated legal status of the property as well as imprecise legislation. It is important to properly develop geodetic and legal documentation which accompanies the application for issuance of the decision and is also used in compensation proceedings.

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