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design algorithms for contemporary pattern-based building envelopes

AIN SHAMS ENGINEERING JOURNAL 2024年第5期15卷

作者： Saeid, Anfal Y. Al-kazzaz, Dhuha A. Univ Mosul Dept Architecture Engn Mosul Iraq

Pattern -based building envelope is a modern style of contemporary facades. Architects may rely on imitating known practices without knowing the processes involved in their design. Therefore, this paper seeks to identify the algorithmic steps implemented in the derivation of contemporary fa & ccedil;ade. The design algorithms of patternbased building envelopes are classified into generative algorithms of the basic pattern and elements, and transformation algorithms. An experimentation method was applied using Grasshopper for Rhino to simulate the formation of nine contemporary pattern -based envelopes. The finding reveals that several approaches are implemented such as elements are extruded from the basic pattern or separated from it. The envelope pattern may result from repeting the elements, or the envelope pattern may be devoid of elements. Modification techniques can manipulate the basic pattern, the elements, or both patterns and elements. They act on the patterns and elements simultaneously in the same way, or separately using different ways.

关键词： Pattern Building envelope Fa & ccedil ade design algorithms Digital design

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Systematic Behavioral design algorithms

Systematic Behavioral Design Algorithms

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2023 Congress in Computer Science, Computer Engineering, and Applied Computing, CSCE 2023

作者： Simmonds, Devon M. University of North Carolina Wilmington WilmingtonNC United States

ISBN: (纸本)9798350327595

algorithms to support systematic software design are needed to enable practitioners to mechanize and coherently manage the engineering of quality software. In practice, design is both an art and a science, and this dichotomy has led some to under-focus on the science and engineering side of software development. In our previous research, we presented a design algorithm for structural design focused on UML use case and requirements class diagrams. In this paper we shift focus to systematic behavioral design algorithms illustrated by UML state and activity diagrams. We present the systematic behavioral design algorithms, their application to a specific case study, as well as contingent results, implications, and lessons learned. © 2023 IEEE.

关键词： design algorithms low-code model driven engineering software design software engineering

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Advancements and challenges in the design and implementation of tensegrity networks of zero mean curvature

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MECCANICA 2025年第3期60卷 709-721页

作者： Liapi, Katherine A. Papantoniou, Andreana Univ Patras Dept Architecture Univ Campus Patras 26504 Greece

The research on tensegrity structure for architectural applications, has been intricately tied to the advancement of both lightweight conventional and temporary structures. The morphological exploration of tensegrity structures is expected to significantly contribute to their application in the fields of building design and construction. This paper is focused on novel configurations of double layer tensegrity networks the two layers of which are minimal surfaces. These minimal surface tensegrity structures that can be defined as zero mean curvature tensegrity networks, constitute a novel category that presents significant advantages in their practical application. The investigation of the geometric properties of these networks/structures has resulted in a set of algorithms that address distinct configurations of tensegrity structures the two layers of which are of helical, catenoid or enneper shape. These algorithms were applied and tested in the process of designing and constructing tensegrity structures with the aforementioned characteristics. For the implementation of the algorithms, a method that permits the construction of double layer tensegrity structures from the assembly of collapsible tensegrity units was employed. Case studies of space enclosure or space covering zero mean curvature tensegrity networks that utilize all developed algorithms and processes, and the way spatial constraints and constructability challenges were addressed, are presented and discussed in the paper. The realization of these structures has substantiated the validity of the algorithms, and the challenges encountered provide valuable insights for refining both the design algorithms and the methods employed in construction and assembly.

关键词： Tensegrity structures Minimal surfaces Surfaces of zero mean curvature Enneper Helicoid Catenoid design algorithms Tensegrity construction

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Digital Engineering in Diffractive Optics for Precision Laser Processing

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PHOTONICS 2025年第4期12卷 306-306页

作者： Murzin, Serguei P. TU Wien Karlspl 13 A-1040 Vienna Austria Samara Natl Res Univ Moskovskoe Shosse 34 Samara 443086 Russia

This article focuses on the application of digital engineering in diffractive optics for precision laser material processing. It examines methods for the development of diffractive optical elements (DOEs) and adaptive management approaches that enhance the accuracy and efficiency of laser processing. Key achievements are highlighted in numerical modeling, machine learning applications, and geometry optimization of optical systems, along with the integration of dynamic DOEs with laser systems for adaptive beam control. The discussion includes the development of complex diffractive structures with improved characteristics and new optimization approaches. Special attention is given to the application of DOEs in micro- and nanostructuring, additive manufacturing technologies, and their integration into high-performance laser systems. Additionally, challenges related to the thermal stability of materials and the complexity of adaptive DOE control are explored, as well as the role of artificial intelligence in enhancing laser processing efficiency.

关键词： diffractive optical elements laser material processing digital engineering design algorithms numerical modeling beam shaping adaptive control energy redistribution spatial light modulators system integration

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design Considerations for an Underactuated Robotic Finger Mechanism

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Chinese Journal of Mechanical Engineering 2009年第4期22卷 475-488页

作者： YAO Shuangji CECCARELLI Marco ZHAN Qiang CARBONE Giuseppe LU Zhen School of Automation Science and Electrical Engineering Beijing University of Aeronautics and Astronautics Beijing 100191 China Laboratory of Robotics and Mechatronics （LARM） University of Cassino Cassino （Fr）.Italy Robotics Institute Beijing University of Aeronautics and Astronautics Beijing 100191 China

A design approach is presented in this paper for underactuation in robotic finger mechanisms. The characters of underactuated finger mechanisms are introduced as based on linkage and spring systems. The feature of self-adaptive enveloping grasp by underactuated finger mechanisms is discussed with feasible in grasping unknown objects. The design problem of robotic fingers is analyzed by looking at many aspects for an optimal functionality. design problems and requirements for underactuated mechanisms are formulated as related to human-like robotic fingers. In particular, characteristics of finger mechanisms are analyzed and optimality criteria are summarized with the aim to formulate a general design algorithm. A general multi-objective optimization design approach is applied as based on a suitable optimization problem by using suitable expressions of optimality criteria. An example is illustrated as an improvement of finger mechanism in Laboratory of Robotics and Mechatronics （LARM） Hand. Results of design outputs and grasp simulations are reported with the aim to show the practical feasibility of the proposed concepts and computations.

关键词： robotic fingers underactuated mechanisms design algorithms optimality criteria .

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LOW-SENSITIVITY OBSERVER-COMPENSATOR design FOR TWO-DIMENSIONAL DIGITAL-SYSTEMS

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IEE PROCEEDINGS-D CONTROL THEORY AND APPLICATIONS 1982年第5期129卷 193-200页

作者： STAVROULAKIS, P PARASKEVOPOULOS, PN UNIV THRACE SCH ENGNXANTHIGREECE

The problem considered in the paper refers to the general area of developing design and computational algorithms for analysing low-sensitivity time-invariant multivariable two-dimensional systems using output feedback. It is seen that the matrix-minimum principle can be used to study two-dimensional digital systems with incomplete state information for the implementation of a low-sensitivity feedback law. The results show that an observer can be used in addition to the output vector to estimate the state of the system, which in turn is used for implementing the feedback law.

关键词： output vector Simulation, modelling and identification design algorithms multidimensional systems state estimation Multivariable control systems Distributed parameter control systems observer-compensator design matrix-minimum principle minimum principle feedback multivariable systems discrete systems output feedback Discrete control systems compensation computational algorithms low-sensitivity feedback law two-dimensional digital systems Control system analysis and synthesis methods low-sensitivity time-invariant multivariable two-dimensional systems

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Analysis and design of a modular underactuated mechanism for robotic fingers

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PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE 2012年第C1期226卷 242-256页

作者： Yao, S. Ceccarelli, M. Zhan, Q. Carbone, G. Lu, Z. Univ Cassino LARM Lab Robot & Mechatron I-03043 Cassino Fr Italy Beihang Univ Sch Automat Sci & Elect Engn Beijing Peoples R China Beihang Univ Inst Robot Beijing Peoples R China

This paper presents an analysis of the design problems and requirements for underactuated mechanisms for robotic fingers. The case of performing a grasping task is considered and a solution is proposed that consists of a series of linked underactuated mechanisms. Optimality criteria are analysed with the aim of formulating a general design algorithm based on a suitable optimization problem. An example of a four-phalanx modular finger is used to highlight the practical feasibility of the proposed modular design concepts and procedures.

关键词： robotic fingers modular design underactuated mechanisms design algorithms optimality criteria

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Transceiver design for multiple-input multiple-output full-duplex amplify-and-forward relay communication systems

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IET COMMUNICATIONS 2019年第1期13卷 66-73页

作者： Shao, Yunlong Dai, Yongyu Gulliver, Thomas Aaron Dong, Xiaodai Univ Victoria Dept Elect & Comp Engn POB 1700 STN CSC Victoria BC V8W 2Y2 Canada

This study examines the linear source and relay precoder and destination combiner design for multiple-input multiple-output full-duplex (FD) relay communication systems. The effect of the residual interference due to the imperfect loop interference cancellation is considered in the design. Two design algorithms are proposed to minimise the mean squared error of the received signal at the destination. The first is a tri-step alternating iterative algorithm while the second is a bi-step iterative algorithm, which has lower complexity and performance comparable to that of the first algorithm. The convergence of these algorithms is evaluated. Results are presented, which show that the proposed FD relay system can provide approximately double the achievable rate of the corresponding half-duplex system if the residual interference is not high.

关键词： MIMO communication amplify and forward communication relay networks (telecommunication) interference suppression radio transceivers radiofrequency interference iterative methods precoding transceivers transceiver design full-duplex amplify- relay communication systems -forward relay communication systems linear source relay precoder residual interference imperfect loop interference cancellation design algorithms mean squared error received signal tri-step alternating bi-step iterative algorithm lower complexity FD relay system corresponding half-duplex

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A parametric approach to the bioclimatic design of large scale projects: The case of a student housing complex

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AUTOMATION IN CONSTRUCTION 2012年第Mar.期22卷 24-35页

作者： Chronis, Angelos Liapi, Katherine A. Sibetheros, Ioannis Univ Patras GR-26110 Patras Greece UCL London WC1E 6BT England TEI Athens Athens Greece

Advanced parametric processes enable the exploration of a wide range of design intentions and the generation of alternative project configurations. A novel parametric approach that integrates climatic and site data into a dynamic model of a large building project, to support architectural decisions in early design stages, is presented. Bioclimatic considerations that involve solar radiation analysis and computational fluid dynamic (CFD)-based wind flow simulations have been integrated into the parametric model, in order to explore the interaction of the geometry of the proposed buildings with the solar exposure and the prevailing winds in the area throughout the year. A new student housing complex on the campus of the University of Patras, Greece, was used as a test-bed for experimentation with the developed design algorithms that link local climatic data with the site topography and the basic geometric features of the buildings on the site. The parametric process and the design algorithms were particularly useful in the early design stage, during which various arrangements of the buildings on the site were studied, in order to optimize their environmental performance. (C) 2011 Elsevier B.V. All rights reserved.

关键词： Parametric design Bioclimatic design design algorithms Sun control Wind analysis CFD in building design

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An overview of design of experiments

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STATISTICAL PAPERS 1996年第1期37卷 1-32页

作者： Draper, NR Pukelsheim, F UNIV WISCONSIN DEPT STAT MADISON WI 53706 USA UNIV AUGSBURG INST MATH D-86135 AUGSBURG GERMANY

An overview of the design of statistical experiments is presented, with special emphasis on response surface designs, block designs, neighbor designs. Applications are mentioned for industrial quality improvement, agr... 详细信息

关键词： response surface designs mixtures experiment designs block designs neighbor designs designs for industrial quality improvement designs for agricultural experiments and biometry design optimality design algorithms

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