Academic literature on the topic 'Dynamic layout'

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Journal articles on the topic "Dynamic layout"

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Adeyeri, Michael Kanisuru, and Sesan Peter Ayodeji. "Comparative analysis of static and dynamic facility layouts design using the modeling of plantain flour as case study." Production Engineering Archives 28, no. 1 (February 12, 2022): 12–20. http://dx.doi.org/10.30657/pea.2022.28.02.

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Abstract Profit optimization at the expense of minimal resource utilization for product development has been the major focus of prospective investors. In an attempt to realize this goal, the present research consideration is tailored towards investigating the effect of introducing dynamic facility layout design. Therefore, this research study uses an existing designed plantain flour processing plant that consists of a washing machine, grating machine, dryer, milling machine and sieving machine. Modeling techniques incorporated with software development were employed on the existing static plant layout to optimize production time and cost of each of the processing units along with the layout. Also, dynamic constraints were introduced into the layouts while mathematical models were formulated to visualize how the output and production process would be. With these models, software for the optimization of static and dynamic layouts was developed. The comparative study was carried out based on the processing time, the number of machines needed for each layout type, the cost of operation and machine procurement cost for both static and dynamic layouts. The constraints introduced ensured that the system improved within the cost limit based on the current market situation and prevented unnecessary enlargement in the plant facility size while minimizing material congestion in the system. The distinction between static and dynamic layout configurations was further established by comparing the results from the layout configurations for a set of throughput masses ranging from 50 kg to 250 kg. Results showed that the cost of operation drops drastically by 69.6 % under dynamic layout configuration.
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CHEN, GARY YU-HSIN, and JU-CHIEH LO. "DYNAMIC FACILITY LAYOUT WITH MULTI-OBJECTIVES." Asia-Pacific Journal of Operational Research 31, no. 04 (August 2014): 1450027. http://dx.doi.org/10.1142/s0217595914500274.

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A problem in multi-objective dynamic facility layout is achieving distance- and adjacency-based objectives for arranging facility layouts across multiple time periods. As a non-deterministic polynomial time-hard problem, it resembles the quadratic assignment problem (QAP), which can be solved through meta-heuristics such as ant colony optimization (ACO). This study investigates three multi-objective approaches coupled with ACO to solve this problem. As the experimental design, we apply the proposed methods to solve the dynamic facility layout problem (DFLP), multi-objective facility layout problem, and multi-objective DFLP based on data sets from the literature to test the quality of the solution. The results show that the proposed methods are effective for solving the problem.
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Munavalli, Jyoti R., Shyam Vasudeva Rao, Aravind Srinivasan, and Frits Van Merode. "Dynamic Layout Design Optimization to Improve Patient Flow in Outpatient Clinics Using Genetic Algorithms." Algorithms 15, no. 3 (March 6, 2022): 85. http://dx.doi.org/10.3390/a15030085.

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Evolutionary algorithms, such as genetic algorithms have been used in various optimization problems. In this paper, we propose to apply this algorithm to obtain the layout design/redesign in order to improve the patient flow in an outpatient clinic. Layout designs are planned considering long-term requirements whereas the layout keeps modifying as per short-term demands. Over a period of time, the layout often does not remain efficient. Therefore, there is a need for such a model that helps in decision making on layout redesigns, and it must also optimize workflow by incorporating the flow constraints. In this study, we propose to minimize the waiting times by obtaining optimal and sub-optimal layout designs. A genetic algorithm is implemented to redesign the layouts based on the changing dynamics of patient demand, clinical pathways and services offered. The workflow is simulated with current layout and optimized layouts, and the results in terms of waiting time and cycle time are compared. The study shows that when layout design or redesign incorporate the workflow and pathways along with associated constraints, improves waiting time and cycle time of patients in the outpatient clinic. The distance between the departments/locations is translated to travelling time and overall travel distance/time is minimized by rearranging the allocations of departments to the location through genetic algorithms.
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Mohan, T. V. Krishna, and V. Madhusudanan Pillai. "Detailed Dynamic Layout Planning: An Adaptive Layout Approach." IFAC Proceedings Volumes 46, no. 9 (2013): 2027–32. http://dx.doi.org/10.3182/20130619-3-ru-3018.00556.

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Tommelein, I. D., and P. P. Zouein. "Interactive Dynamic Layout Planning." Journal of Construction Engineering and Management 119, no. 2 (June 1993): 266–87. http://dx.doi.org/10.1061/(asce)0733-9364(1993)119:2(266).

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Madhusudanan Pillai, V., Irappa Basappa Hunagund, and Krishna K. Krishnan. "Design of robust layout for Dynamic Plant Layout Problems." Computers & Industrial Engineering 61, no. 3 (October 2011): 813–23. http://dx.doi.org/10.1016/j.cie.2011.05.014.

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Noll, Matias, Cláudia Tarragô Candotti, Bruna Nichele da Rosa, Juliana Adami Sedrez, Adriane Vieira, and Jefferson Fagundes Loss. "Layout for Assessing Dynamic Posture." Pediatric Physical Therapy 28, no. 4 (2016): 435–44. http://dx.doi.org/10.1097/pep.0000000000000292.

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Hunagund, Irappa Basappa, V. Madhusudanan Pillai, and Ujjani Nagegowda Kempaiah. "Design of robust layout for unequal area dynamic facility layout problems with flexible bays structure." Journal of Facilities Management 18, no. 4 (August 24, 2020): 361–92. http://dx.doi.org/10.1108/jfm-04-2020-0028.

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Purpose The purpose of this paper is to develop a mathematical model for the design of robust layout for unequal area-dynamic facility layout problem with flexible bay structure (UA-DFLP with FBS) and test the suitability of generated robust layout in a dynamic environment. Design/methodology/approach This research adopts formulation of a mathematical model for generating a single layout for unequal area facility layout problems with flexible bay structure under dynamic environment. The formulated model for the robust layout formation is solved by developing a simulated annealing algorithm. The proposed robust approach model for UA-DFLP with FBS is validated by conducting numerical experiments on standard UA-DFLPs reported in the literature. The suitability of the generated robust layout in a dynamic environment is tested with total penalty cost criteria. Findings The proposed model has given a better solution for some UA-DFLPs with FBS in comparison with the adaptive approach’s solution reported in the literature. The total penalty cost is within the specified limit given in the literature, for most of the layouts generated for UA-DFLPs with FBS. In the proposed model, there is no rearrangement of facilities in various periods of planning horizon and thus no disruptions in operations. Research limitations/implications The present work has limitations that when the area and aspect ratio of the facilities are required to change from one period to another, then it is not possible to make application of the robust approach-based formulation to the dynamic environment facility layout problems. Practical implications Rearrangement of facilities in adaptive approach disrupts the operations whereas in the proposed approach no disruption of production. The FBS approach is more suitable for layout planning where proper aisle structure is required. The solution of the proposed approach helps to create a proper aisle structure in the detailed layout plan. Thus, easy interaction of the material handling equipment, men and materials is possible. Originality/value This paper proposes a mathematical formulation for the design of robust layout for UA-FLPs with FBS in a dynamic environment and an efficient simulated annealing algorithm as its solution procedure. The proposed robust approach generates a single layout for the entire planning horizon. This approach is more useful for facilities which are difficult/sensitive to relocate in various periods of the planning horizon.
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Archambault, Daniel, and Helen C. Purchase. "On the effective visualisation of dynamic attribute cascades." Information Visualization 15, no. 1 (April 6, 2015): 51–63. http://dx.doi.org/10.1177/1473871615576758.

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Cascades appear in many applications, including biological graphs and social media analysis. In a cascade, a dynamic attribute propagates through a graph, following its edges. We present the results of a formal user study that tests the effectiveness of different types of cascade visualisations on node-link diagrams for the task of judging cascade spread. Overall, we found that a small multiples presentation was significantly faster than animation with no significant difference in terms of error rate. Participants generally preferred animation over small multiples and a hierarchical layout to a force-directed layout. Considering each presentation method separately, when comparing force-directed layouts to hierarchical layouts, hierarchical layouts were found to be significantly faster for both presentation methods and significantly more accurate for animation. Representing the history of the cascade had no significant effect. Thus, for our task, this experiment supports the use of a small multiples interface with hierarchically drawn graphs for the visualisation of cascades. This work is important because without these empirical results, designers of dynamic multivariate visualisations (in many applications) would base their design decisions on intuition with little empirical support as to whether these decisions enhance usability.
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Elmalich, Dvir, and Oded Rabinovitch. "Fiber Orientation Effect in the Dynamic Buckling of Debonded Regions in Laterally Loaded FRP Strengthened Walls." Key Engineering Materials 624 (September 2014): 470–77. http://dx.doi.org/10.4028/www.scientific.net/kem.624.470.

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This paper studies the effect of lamination and fiber orientation on the geometrically nonlinear dynamic response of debonded regions in walls strengthened with FRP. The paper adopts an analytical/numerical approach and uses a specially tailored finite element formulation for the layered structure. By means of this analytical/numerical tool, two strengthening layouts for a wall segment subjected to a dynamic shear loading are compared. In the first layout, the fibers are oriented along the width and height of the segment and in the second one, they are oriented along its diagonals. The analysis reveals that the two layouts are involved with significantly different critical points and significantly different dynamic post-buckling behaviors. Specifically, it shows that the diagonal layout, which better serves the shear loading scenario, is involved with a much smaller critical displacement and a dynamic post-buckling behavior that is governed by the stiffer compressed and tensed diagonals.
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Dissertations / Theses on the topic "Dynamic layout"

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Crawford, Carl Jonathan. "Dynamic multilevel graph layout and visualisation." Thesis, University of Greenwich, 2016. http://gala.gre.ac.uk/18104/.

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This thesis addresses the issue of efficient dynamic graph drawing for large scale connected graphs with around 10,000 vertices. It contains three main contributions. Firstly, an efficient method for approximating the n-body calculations used in Force Directed Placement (FDP) is described, exploiting use of a multilevel scheme to approximate distance between groups of vertices much like the Barnes Hut Octree. The method suggests better representation of the graphs underlying relationships. In experiments this algorithm, referred to as Multilevel Global Force (MGF), reduces running time by an average of 40% compared to the popular Barnes Hut Octree approximation method. Secondly, optimisation methods used in static graph drawing (such as multilevel and approximation schemes) are adapted for use in dynamic graph drawing, simultaneously improving the quality of layouts produced and reducing the complexity such that large graphs with thousands of vertices can be drawn in interactive time. Thirdly, several techniques are introduced for incorporating graph changes into the dynamic graph drawing to differing extents, allowing the viewer to decide whether the ongoing layout should preserve the original layout or prioritise the graph changes. The works are combined to form an efficient multilevel dynamic graph drawing algorithm.
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Kanya, Denise L. "Preprocessing rules for the dynamic layout problem." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1177533808.

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Nayak, Chandan N. "Solutions to dynamic facility layout problems: Development of Dynamic From Between Chart (DFBC) and its applications to continuous layout modeling." Diss., Wichita State University, 2007. http://hdl.handle.net/10057/1493.

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Manufacturing facility layout is determined by minimizing the Material Handling (MH) cost associated with the manufacturing of products. A manufacturing facility operates in a dynamic environment where the production rates and product mix are continuously changing. In addition, the introduction of new products/machines and removal of existing products/machines render the existing layout completely unreliable to yield improved productivity. Hence, it is often necessary to analyze the current layout and redesign the layout in accordance with the constantly changes in demand. Existing methods for the analysis of redesign uses multiple, static, and tabular from-to charts. These charts assume and exhibit the timely demand as a discrete invariable quantity. A new tool, “Dynamic From Between Chart (DFBC)” that allows easier visualization of the changes in product rates and mix is introduced and developed in this research. DFBC models the production rate changes using a continuous function. The development process of the new tool, the formulation of the cost function and its application to the solution of Dynamic Facility Layout Problems (DFLP) for multiple time periods is presented with the use of a case study. The solution methodology uses a tradeoff analysis between increased MH cost and the rearrangement cost for the transition from existing layout to a new layout. To further authenticate and strengthen the developed methodology, real world case studies are considered and evaluated. Importance of any department flow over the other departments (crossover) occurs only if there is variation in the flow volumes between relative departments. In previous research, the redesign is carried out at the end of specific time period in a given time horizon. In most instances, the need for redesign or change in flow occurs somewhere during the period and identifying such crossover points will assist to yield better savings. In addition, the exact time at which the layout should be modified can be determined. For large size problems, the number of crossover points sited in DFBC will be large and evaluating each of these points to identify the point of change in layout will be tedious and time consuming. Thus, along with the methodology to identify the crossover points a concept of Upper bound and Lower bound (UB–LB) to discover the set of redesign points which may warrant a change in layout has been developed. Further analysis is necessary to detect the point(s) that initiate the change. Limiting the solution space facilitates the evaluation of large size problems by reducing and simplifying the computation. Multiple case studies are considered and evaluated to indicate the applicability of the concept. It is also evident in current manufacturing paradigms that the introduction of new products/machines and removal of existing products/machines in-between the time horizon induces huge flow variations between departments. Previous research on DFLP does not deal with models which adopt such scenarios. In this research the application of DFBC to analyze the impact of introduction of new products/machines and removal of existing products/machines in between the time horizon is considered. The ability of the DFBC to address such scenarios is evaluated using a case study. Finally, the possible extensions of this research are listed along with the conclusions on the proposed approach.
Thesis (Ph.D.)--Wichita State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering
"December 2007."
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Nayak, Chandan N. Krishnan Krishna. "Solutions to dynamic facility layout problems: Development of Dynamic From Between Chart (DFBC) and its applications to continuous layout modeling /." Diss., A link to full text of this thesis in SOAR, 2007. http://hdl.handle.net/10057/1493.

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Huang, Xiaodi, and xhuang@turing une edu au. "Filtering, clustering and dynamic layout for graph visualization." Swinburne University of Technology, 2004. http://adt.lib.swin.edu.au./public/adt-VSWT20050428.111554.

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Graph visualization plays an increasingly important role in software engineering and information systems. Examples include UML, E-R diagrams, database structures, visual programming, web visualization, network protocols, molecular structures, genome diagrams, and social structures. Many classical algorithms for graph visualization have already been developed over the past decades. However, these algorithms face difficulties in practice, such as the overlapping nodes, large graph layout, and dynamic graph layout. In order to solve these problems, this research aims to systematically address both algorithmic and approach issues related to a novel framework that describes the process of graph visualization applications. At the same time, all the proposed algorithms and approaches can be applied to other situations as well. First of all, a framework for graph visualization is described, along with a generic approach to the graphical representation of a relational information source. As the important parts of this framework, two main approaches, Filtering and Clustering, are then particularly investigated to deal with large graph layouts effectively. In order to filter 'noise' or less important nodes in a given graph, two new methods are proposed to compute importance scores of nodes called NodeRank, and then to control the appearances of nodes in a layout by ranking them. Two novel algorithms for clustering graphs, KNN and SKM, are developed to reduce visual complexity. Identifying seed nodes as initial members of clusters, both algorithms make use of either the k-nearest neighbour search or a novel node similarity matrix to seek groups of nodes with most affinities or similarities among them. Such groups of relatively highly connected nodes are then replaced with abstract nodes to form a coarse graph with reduced dimensions. An approach called MMD to the layout of clustered graphs is provided using a multiple-window�multiple-level display. As for the dynamic graph layout, a new approach to removing overlapping nodes called Force-Transfer algorithm is developed to greatly improve the classical Force- Scan algorithm. Demonstrating the performance of the proposed algorithms and approaches, the framework has been implemented in a prototype called PGD. A number of experiments as well as a case study have been carried out.
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Trivedi, Nihar. "An approach to display layout of dynamic windows." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 1997. https://ro.ecu.edu.au/theses/884.

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The development of windows based user interface has introduced a new dimension to the field of human computer interaction. Now a user is able to perform multiple tasks at a time, often switching from one task to another. However windows environment also imposes the burden of manual windows management on the user. Several studies have suggested that manual window management is an unproductive chore often resulting in clutter and confusion on the display screen. Therefore we need a automatic windows layout generator to free the user to perform other useful tasks. This thesis introduces SPORDAC {Shadow Propagation for Overlap Removal and Display Area Compaction) algorithm. This algorithm aims to remove overlap from the display layout and encapsulate the layout in the finite display area. The SPORDAC prototype integrates the SPORDAC algorithm with simulated annealing to optimise the display area usage. The usefulness and applicability of the SPORDAC approach are illustrated with the implementation of a prototype, samples of generated layouts and analysis of the collected data
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Liu, Wen-Hsing. "Tabu search heuristics for the dynamic facility layout problem." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=3973.

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Thesis (M.S.)--West Virginia University, 2005.
Title from document title page. Document formatted into pages; contains vii, 88 p. : ill. Includes abstract. Includes bibliographical references (p. 83-88).
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Kuppusamy, Saravanan. "Simulated annealing heuristics for the dynamic facility layout problem." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2138.

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Thesis (M.S.)--West Virginia University, 2001.
Title from document title page. Document formatted into pages; contains x, 133 p. : ill. Includes abstract. Includes bibliographical references (p. 88-94).
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Shang, Jin. "Ant colony heuristics for the dynamic facility layout problem." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2579.

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Thesis (M.S.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains vii, 76 p. : ill. Includes abstract. Includes bibliographical references (p. 72-76).
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Jariwala, Anish. "Efficient branch and bound algorithm for the dynamic layout problem." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1179426531.

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Books on the topic "Dynamic layout"

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Kröner, Alexander. Adaptive layout of dynamic Web pages. Berlin: Akademische Verlagsgesellschaft Aka, 2001.

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Kröner, Alexander. Adaptive layout of dynamic Web pages. Berlin: Akademische Verlagsgesellschaft Aka, 2001.

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Khosrowshahi, S. R. Hatami. A non-deterministic approach to dynamic layout planning of flexible manufacturing systems. [s.l.]: typescript, 1991.

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Kemp, Jana M. Building community in buildings: The design and culture of dynamic workplaces. Westport, Conn: Praeger, 2007.

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Webster, Tony. Dynamics of desktop publishing design: For users of Pagemaker 3.0. Redwood City, Calif: M&T Pub, 1989.

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Webster, Tony. Dynamics of desktop publishing design. Redwood City, Ca: M&T Pub., 1989.

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Vallejo Maldonado, Pablo Ramon, and Nikolay Chaynov. Kinematics and dynamics of automobile piston engines. ru: INFRA-M Academic Publishing LLC., 2019. http://dx.doi.org/10.12737/989072.

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The fundamentals of kinematics and dynamics of transport piston internal combustion engines made using different layout schemes are presented. Along with the traditional in-line, V-shaped, including oppositional, arrangement of cylinders, schemes with "staggered" arrangement of cylinders in the block at the displaced connecting rod necks of the crankshaft of the engine are considered. The kinematics of the coaxial crank mechanism is considered in detail. The questions of dynamics with reduction of calculated dependences of forces, moments, a choice of a rational order of work of cylinders in relation to the considered kinematic schemes are in detail stated. Considerable attention is paid to the unevenness of the crankshaft rotation speed and engine balancing. The loads on the main and connecting rod bearings of the crankshaft, the knowledge of which is necessary in determining the bearing capacity of bearing units, are also considered. Meets the requirements of the Federal state educational standards of higher education of the last generation. For students of higher educational institutions studying in the direction of training 23.03.03 "Operation of transport and technological machines and complexes" and related areas.
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Ticket to Ride: The Essential Guide to the World's Greatest Roller Coasters and Thrill Rides. New York, New York, USA: Chartwell Books, 2019.

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Kroner, A. Adaptive Layout of Dynamic Web Pages. Ios Pr Inc, 2001.

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Office Design Sourcebook: Solutions for Dynamic Workspaces (Interior Design and Architecture). Rockport Publishers, 2003.

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Book chapters on the topic "Dynamic layout"

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Ayesh, Aladdin. "Background and Layout." In Essential Dynamic HTML fast, 66–73. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0363-9_9.

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Li, Xinyu, Yanyi Zhang, Ivan Marsic, and Randall S. Burd. "Privacy Preserving Dynamic Room Layout Mapping." In Lecture Notes in Computer Science, 61–70. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-33618-3_7.

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Brandes, Ulrik, Daniel Fleischer, and Thomas Puppe. "Dynamic Spectral Layout of Small Worlds." In Graph Drawing, 25–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11618058_3.

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Gad, Heba Kh, Mostafa H. Ali, Aya Eldesouky, Alshimaa Abdullatif, Mos Serry, Hosny Ossama, and Yasmeen A. S. Essawy. "Irregular Dynamic Site Layout Optimization Model." In Lecture Notes in Civil Engineering, 391–402. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34593-7_25.

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Brandes, Ulrik, and Dorothea Wagner. "A bayesian paradigm for dynamic graph layout." In Graph Drawing, 236–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/3-540-63938-1_66.

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Yang, Debin, Bingxian Liu, Kehui Wang, Kun Gui, Kewei Chen, and Fangyan Dong. "Research on Slide-Stainer Layout Dynamic Optimization." In Lecture Notes in Electrical Engineering, 1027–36. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2730-2_95.

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Li, Lianghao, Bo Li, Huihui Liang, and Weiwei Zhu. "The Heuristic Methods of Dynamic Facility Layout Problem." In Advances in Intelligent Systems and Computing, 269–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37832-4_25.

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Hartmann, Knut, Kamran Ali, and Thomas Strothotte. "Floating Labels: Applying Dynamic Potential Fields for Label Layout." In Smart Graphics, 101–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24678-7_10.

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Nahas, Nabil, and Mustapha Nourelfath. "Iterated Great Deluge for the Dynamic Facility Layout Problem." In Operations Research/Computer Science Interfaces Series, 57–92. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23350-5_3.

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Singh, Surya Prakash. "An Approximate Algorithm for Solving Dynamic Facility Layout Problem." In Information and Communication Technologies, 504–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15766-0_84.

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Conference papers on the topic "Dynamic layout"

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Chang, David, Thu Nguyen, and Niko Takayesu. "Scrambler: dynamic layout adaptation." In SPLASH '16: Conference on Systems, Programming, Languages, and Applications: Software for Humanity. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2984043.2998549.

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Salimpour, Saeideh, and Ahmed Azab. "A Dynamic Programming Approach to Solve the Facility Layout Problem for Reconfigurable Manufacturing." In ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-60408.

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Abstract Preparing manufacturing systems to deal with disruptions caused by unexpected factors such as COVID-19 is critical to remain in today’s competitive market. Reconfigurable manufacturing systems (RMS) which are characterized by being rapid and cost-effective in response to market changes, are a good alternative to cope with such unexpected events. From the layout point of view, in an RMS, the layout of facilities needs to be changeable and able to be redesigned easily. Dynamic facility layout problem (DFLP) is a good approach to develop layouts that are capable to be changed and redesigned. Dynamic programming (DP) has been known as one of the effective methods to deal with DFLP. To optimize DFLP by DP, the set of possible layouts for every single period which is called the state-space is given to DP and the best multi-period layout is found. Since the number of possible layouts increases rapidly with the increase in the number of facilities, considering all these layouts encounters two major difficulties, memory requirements and computer time requirements. This paper proposes a method that has two main phases. In the first phase, the set of layouts to be considered in each period are determined using a heuristic approach. These layouts are the states in the DP approach where the periods constituted the decomposition stages. The recursive formulation of DP is solved in the second phase using a hybridized metaheuristic approach. The proposed approach restricts the DP to a good subset of the state-space. A genetic algorithm is applied to search for the best subset of layouts where each chromosome represents one subset of layouts. This subset is given to DP to be solved and the result is considered as the fitness of the chromosome. By the evolution of the chromosomes, the best subset of layouts that leads to the best multi-period layout plan is found. The proposed approach is evaluated against DP benchmarks in the literature. Computational results show that the proposed approach is able to provide more efficient solutions, especially for large-sized problems.
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Holder, Ophir, and Israel Ben-Shaul. "Dynamic layout of distributed applications." In the third international workshop. New York, New York, USA: ACM Press, 1998. http://dx.doi.org/10.1145/288408.288428.

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Chraibi, Abdelahad, Said Kharraja, Ibrahim H. Osman, and Omar Elbeqqali. "Optimization of dynamic operating theatre facility layout." In 2015 International Conference on Industrial Engineering and Systems Management (IESM). IEEE, 2015. http://dx.doi.org/10.1109/iesm.2015.7380169.

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Tang, Houjun, Suren Byna, Steve Harenberg, Xiaocheng Zou, Wenzhao Zhang, Kesheng Wu, Bin Dong, et al. "Usage Pattern-Driven Dynamic Data Layout Reorganization." In 2016 16th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid). IEEE, 2016. http://dx.doi.org/10.1109/ccgrid.2016.15.

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Holder, Ophir, Israel Ben-Shaul, and Hovav Gazit. "Dynamic layout of distributed applications in FarGo." In the 21st international conference. New York, New York, USA: ACM Press, 1999. http://dx.doi.org/10.1145/302405.302462.

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Chen, Gary, and Jamie Rogers. "Managing dynamic facility layout with multiple objectives." In Technology. IEEE, 2009. http://dx.doi.org/10.1109/picmet.2009.5262013.

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Agarwal, M., M. Mehra, R. Pawar, and D. Shah. "Secure authentication using dynamic virtual keyboard layout." In the International Conference & Workshop. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/1980022.1980087.

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Ripon, Kazi Shah Nawaz, Kyrre Glette, Mats Hovin, and Jim Torresen. "Dynamic facility layout problem with hybrid genetic algorithm." In 2010 IEEE 9th International Conference on Cybernetic Intelligent Systems (CIS). IEEE, 2010. http://dx.doi.org/10.1109/ukricis.2010.5898091.

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Cheng, Haibin, Eren Manavoglu, Ying Cui, Ruofei Zhang, and Jianchang Mao. "Dynamic ad layout revenue optimization for display advertising." In the Sixth International Workshop. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2351356.2351365.

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Reports on the topic "Dynamic layout"

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Floyd, Jason, and Daniel Madrzykowski. Analysis of a Near Miss in a Garden Apartment Fire – Georgia 2022. UL's Fire Safety Research Institute, October 2022. http://dx.doi.org/10.54206/102376/rsfd6862.

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On February 9, 2022, Cobb County Fire and Emergency Services responded to a fire in a ground floor unit in a garden apartment building. At arrival, the fire was a post-flashover fire in a bedroom. Initial fire control was attempted by an interior fire attack team which was unable to quickly locate the fire. Exterior suppression through the bedroom window was started prior to discovery of the fire by the interior team. Shortly after fire discovery by the internal team, a mayday was called. Four firefighters from the interior fire attack team received first and second degree burns. This report analyzes photographic, video, and written documentation from the incident to evaluate the timeline of the incident and to assess the fire conditions present. Computer modeling using the Fire Dynamics Simulator (FDS) was performed to provide further insight into the fire conditions and the impact of decisions and actions on the fire ground. Additionally, data from a full scale fire test of a similar fire in a similar structure was used to provide additional insight. Four FDS simulations were performed in support of the analysis. These included a simulation of the event as it unfolded and three simulations looking at the impact of alternate tactics which included: initial exterior attack prior to entry, the use of a smoke curtain to protect the building exit path, and interior only attack. FDS simulations provided insight on the heat present in the apartment during the fire and the impact of the interior and exterior suppression on conditions inside the apartment. Full scale test data of a similar fire showed similar behavior to the FDS predictions and gives credence to the FDS results. Results of the analysis suggest that injuries resulted from the length of time the interior attack team was present inside the apartment before actions were taken to reduce the severity of the fire. Six contributing factors were identified including size-up, communication and accountability, delayed exterior attack, lack of entry hall protection, the apartment layout and construction, thermal imager use, and mayday procedures and training. The last contributing factor was a positive contribution that helped avoid more serious injuries. Based on the contributing factors, five recommendations were made that include improved size-up, exterior fire control to prevent exterior spread, protection of exit pathways, basing fire ground tactics on known information, and recognizing when a change in tactics is needed.
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Sprague, Joshua, David Kushner, James Grunden, Jamie McClain, Benjamin Grime, and Cullen Molitor. Channel Islands National Park Kelp Forest Monitoring Program: Annual report 2014. National Park Service, August 2022. http://dx.doi.org/10.36967/2293855.

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Channel Islands National Park (CHIS) has conducted long-term ecological monitoring of the kelp forests around San Miguel, Santa Rosa, Santa Cruz, Anacapa and Santa Barbara Islands since 1982. The original permanent transects were established at 16 sites between 1981 and 1986 with the first sampling beginning in 1982, this being the 33rd year of monitoring. An additional site, Miracle Mile, was established at San Miguel Island in 2001 by a commercial fisherman with assistance from the park. Miracle Mile was partially monitored from 2002 to 2004, and then fully monitored (using all KFM protocols) since 2005. In 2005, 16 additional permanent sites were established to collect baseline data from inside and adjacent to four marine reserves that were established in 2003. Sampling results from all 33 sites mentioned above are included in this report. Funding for the Kelp Forest Monitoring Program (KFM) in 2014 was provided by the National Park Service (NPS). The 2014 monitoring efforts utilized 49 days of vessel time to conduct 1,040 dives for a total of 1,059 hours of bottom time. Population dynamics of a select list of 71 “indicator species” (consisting of taxa or categories of algae, fish, and invertebrates) were measured at the 33 permanent sites. In addition, population dynamics were measured for all additional species of fish observed at the sites during the roving diver fish count. Survey techniques follow the CHIS Kelp Forest Monitoring Protocol Handbook (Davis et al. 1997) and an update to the sampling protocol handbook currently being developed (Kushner and Sprague, in progress). The techniques utilize SCUBA and surface-supplied-air to conduct the following monitoring protocols: 1 m2 quadrats, 5 m2 quadrats, band transects, random point contacts, fish transects, roving diver fish counts, video transects, size frequency measurements, and artificial recruitment modules. Hourly temperature data were collected using remote temperature loggers at 32 sites, the exception being Miracle Mile where there is no temperature logger installed. This annual report contains a brief description of each site including any notable observations or anomalies, a summary of methods used, and monitoring results for 2014. All the data collected during 2014 can be found in the appendices and in an Excel workbook on the NPS Integrated Resource Management Applications (IRMA) portal. In the 2013 annual report (Sprague et al. 2020) several changes were made to the appendices. Previously, annual report density and percent cover data tables only included the current year’s data. Now, density and percent cover data are presented in graphical format and include all years of available monitoring data. Roving diver fish count (RDFC), fish size frequency, natural habitat size frequency, and Artificial Recruitment Module (ARM) size frequency data are now stored on IRMA at https://irma.nps.gov/DataStore/Reference/Profile/2259651. The temperature data graphs in Appendix L include the same graphs that were used in past reports, but include additional violin plot sections that compare monthly means from the current year to past years. In addition to the changes listed above, the layout of the discussion section was reordered by species instead of by site. The status of kelp forests differed among the five park islands. This is a result of a combination of factors including but not limited to, oceanography, biogeography and associated differences in species abundance and composition, as well as sport and commercial fishing pressure. All 33 permanent sites were established in areas that had or were historically known to have had kelp forests in the past. In 2014, 15 of the 33 sites monitored were characterized as developing kelp forest, kelp forest or mature kelp forest. In addition, three sites were in a state of transition. Two sites were part kelp forest and part dominated by Strongylocentrotus purpuratus...
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STUDY ON STATIC AND DYNAMIC EXPERIMENT OF SPATIAL CABLE-TRUSS STRUCTURE WITHOUT INNER RING CABLES BASED ON GRID-JUMPED LAYOUT OF STRUTS. The Hong Kong Institute of Steel Construction, December 2022. http://dx.doi.org/10.18057/ijasc.2022.18.4.6.

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Cable-truss tensile structures are one of the most imperative types of spatial structures, and a spatial cable-truss structure without inner ring cables (SCSWIRC) is a new type of cable-truss tensile structure. Although SCSWIRC has a strong anti-collapse capacity, its construction forming is difficult. Based on the concept of grid-jumped layout for struts, the experimental model with a span of 6 m is designed, and then three grid-jumped layout schemes are proposed to simplify structure system. The static and dynamic properties of experimental and finite element models are systematically studied. The results show that experimental values agree with simulation values. The errors of the static experiment are in the range of 6%~11.53% and the errors of the dynamic experiment are in the range of 5%~8%. The grid-jumped layout has negligible effects on the internal forces of cables. However, it has excellent effects on the internal forces of struts and nodal displacements at the grid-jumped layout, so the mechanical property of struts needs to be rechecked after grid-jumped layout. The mechanical property of the optimal grid-jumped layout scheme does not change compared with original scheme. The optimal grid-jumped layout scheme not only simplifies SCSWIRC, but also reduces the amount of steel. The study can promote the application of SCSWIRC in practical engineering.
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STUDY ON FORCE MECHANISM OF CABLE-TRUSS FRAME AND JUMPED LAYOUT OF ANNULAR CROSSED CABLE-TRUSS STRUCTURE. The Hong Kong Institute of Steel Construction, September 2021. http://dx.doi.org/10.18057/ijasc.2021.17.3.3.

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A new type of cable-strut tension structure named Annular Crossed Cable-truss Structure(ACCTS) comprises a series of planar cable-truss frames crossed each other. To investigate the force mechanism of ACCTS, a cable-truss frame model with 2-bar and 6-cable has been developed, and its initial stiffness formula has been derived as well. The model is further simplified to make it is upper and lower vector heights equal, and then the initial stiffness formula and the critical slack load formula are further deduced. Based on ANSYS software and cable-truss frame with a span of 60m, the influences of the number of struts and position of jumped layout on the cable-truss frame are studied. According to the former 60m span cable-truss frame's research results, the jumped layout of ACCTS with a span of 100m is studied. The static and dynamic performances of two schemes, the optimal jumped layout scheme and the original scheme, are systematically studied. It is shown that the number of struts would be about 6~8 for the planar cable-truss frame and the optimal order of jumped layout is strut 6-7→strut 4-5→strut 2-3. The optimal order of jumped layout of ACCTS agrees with that of the cable-truss frame, verifying the feasibility of conclusions. In the condition of no variation in the original structure's static and dynamic performance, the optimal scheme of the jumped layout will lower the steel consumption and enhance the buckling loads. Moreover, it also simplifies structure for easy construction.
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OPTIMIZATION OF STIFFNESS AND DAMPING COEFFICIENTS OF CONNECTION DAMPERS TO REDUCE THE DYNAMIC RESPONSE OF TRANSMISSION LINE STEEL TOWERS SUBJECTED TO WIND ACTION. The Hong Kong Institute of Steel Construction, September 2023. http://dx.doi.org/10.18057/ijasc.2023.19.3.6.

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Tall and slender latticed steel towers, such as power transmission line towers, are very susceptible to vibrations imposed mainly by wind action. Thus, changing the design layout or making use of vibration control devices is often necessary to reduce vibration amplitudes and avoid the collapse of the structure. In this work, an alternative to the conventional types of commercial dampers is the use of elements in the connections of the structure, such as rubber rings working like connection dampers, so they can dissipate the energy of the system reducing the dynamic response of the tower. Thus, this work proposes a methodology for the optimization of stiffness and damping coefficients of connection dampers in structures of latticed steel towers of Transmission Lines (TL) that are subjected to the dynamic effects of wind. An illustrative example is presented. First, the structure is evaluated considering perfectly rigid connections; then the stiffness and damping coefficient of the connections are optimized in order to minimize the vibration amplitudes of the tower. Finally, the natural frequencies, damping ratios and maximum horizontal displacements are compared for situations of perfectly rigid and semi-rigid connections. The results show that the optimization process results in a structure with a fundamental frequency of vibration similar to that of the original tower, however a significant reduction in the horizontal displacements can be observed, since an increase in damping occurs, thus proving the capacity of the proposed methodology.
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