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Journal articles on the topic 'Irregular Design'

Author: Grafiati

Published: 10 March 2023

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1

Schlueter, Arno, and Tobias Bonwetsch. "Design Rationalization of Irregular Cellular Structures." International Journal of Architectural Computing 6, no. 2 (June 2008): 197–211. http://dx.doi.org/10.1260/147807708785850104.

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2

Reck, Brian, and J. P. Morgan. "Optimal design in irregular BIBD settings." Journal of Statistical Planning and Inference 129, no. 1-2 (February 2005): 59–84. http://dx.doi.org/10.1016/j.jspi.2004.06.039.

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3

Al-Ansari, Mohammed Salem, and Muhammad Shekaib Afzal. "Simplified Irregular Beam Analysis and Design." Civil Engineering Journal 5, no. 7 (July 21, 2019): 1577–89. http://dx.doi.org/10.28991/cej-2019-03091354.

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This paper presents simple method to estimate the strength design of reinforced concrete beam sections based on structural safety and reliability. Irregular beam shaped sections are commonly used nowadays in the construction industry. This study reveals the simplified method to analyze and design the different irregular shaped beam sections. In this study, the selected irregular beam shaped sections are divided mainly into three groups, beams with straight edges, beams with sloped edges and circular beams. Each group contains the most commonly used beam shaped sections in that category. Six beams sections (B-1 to B-6) are selected for group-1 whereas five beam sections (B-7 to B-11) and a circular beam section (B-12) are chosen for group 2 and 3 respectively. Flexural beam formulas for three groups of reinforced concrete beams are derived based on section geometry and ACI building code of design. This study also analyzed numerical examples for some of the sections in each group category using the proposed simplified method to determine the strength design of the irregular beams. The results obtained using simplified method for all of the three groups are compared with the finite element software (SAP v2000). The percentage difference of simplified method with the finite element software ranges within 5% to 10%. This makes the simplified method for irregular shaped beam sections quite promising.

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Al-Ansari, Mohammed Salem, and Muhammad Shekaib Afzal. "Structural analysis and design of irregular shaped reinforced concrete slabs using a simplified design method." Journal of Structural Engineering & Applied Mechanics 3, no. 4 (December 31, 2020): 276–88. http://dx.doi.org/10.31462/jseam.2020.04276288.

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This paper presents a simplified method to analyze and design the irregular reinforced concrete slabs based on structural safety and economy. The triangular, trapezoidal, and curved slab sections are selected in this study to be analyzed and designed using a simplified design method approach (SDM) as these sections are the most common type of irregular slab sections used in the construction industry. Flexural design formulas for triangular and curved slabs are derived based on the theoretical principles of plate and yield line theories and ACI building code of design constraints. Numerical examples are presented in this study to illustrate the method capability of designing the most commonly used irregular slabs sections. The complete design of four triangular slabs (TS-1 to TS-4) and four curved slabs (CS-1 to CS-4) is provided in this study. Besides, the required equivalent (triangular and rectangular) shaped sections are provided to deal with irregular trapezoidal slab section. The selected irregular slab sections (triangular and curved slab sections) are also analyzed and designed using the computer software (SAFE) and the results obtained are compared with the numerical solutions. The percentage difference of the simplified method with the finite element software (SAFE) ranges from 4% to 12%. The results obtained for all the selected irregular shaped slab sections indicates that the SDM is a good and quick approach to design irregular (triangular and curved) slab sections.

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5

Dhanuskar, Dr J. R., and Yogesh M. Jadhav. "Analysis and Design of an Irregular Steel Marine Structure." International Journal for Research in Applied Science and Engineering Technology 11, no. 2 (February 28, 2023): 520–25. http://dx.doi.org/10.22214/ijraset.2023.49054.

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Abstract: Due to requirement of unique architectural appearance of building, the regularity in plan, mass and stiffness may get disturbed and may lead to development of torsion in the structure. The two most significant aspects of new structures are form and function, which are growing more sophisticated as elements of equally sophisticated "systems" that we live in. Both the shape and the structural system must be sound in order for the construction to be both aesthetically pleasing and functionally successful. Nowadays, it is usual to see structures that are irregularly shaped or sculptural in nature. The irregular shape building differs from regular building in terms of shape, structure, reliability, economy and aesthetic appearance. The study focuses on design and load analysis of an irregular steel structure which is in the shape of a ship. The design and analysis is performed in STAAD PRO software.

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6

Clifton-Everest, Robert, Trevor L. McDonell, Manuel M. T. Chakravarty, and Gabriele Keller. "Streaming irregular arrays." ACM SIGPLAN Notices 52, no. 10 (October 31, 2017): 174–85. http://dx.doi.org/10.1145/3156695.3122971.

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7

Visvizi, Anna, Colette Mazzucelli, and Miltiadis Lytras. "Irregular migratory flows." Journal of Science and Technology Policy Management 8, no. 2 (July 3, 2017): 227–42. http://dx.doi.org/10.1108/jstpm-05-2017-0020.

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Purpose The purpose of this study is to navigate the challenges irregular migratory flows generate for cities and urban systems. The migration and refugee crises that challenged Europe in 2015-2016 revealed that the developed world cities and urban areas are largely unprepared to address challenges that irregular migratory flows generate. This paper queries the smart and resilient cities’ debates, respectively, to highlight that migration-related challenges and opportunities have not been explicitly addressed in those deliberations. This creates a disconnect between what these debates promise and what cities/urban systems increasingly need to address on a daily basis. Subsequently, a way of bridging that disconnect is proposed and its policy-making implications discussed. Design/methodology/approach To suggest ways of navigating irregular migration-inflicted challenges cities/urban areas face, a nexus between the smart cities and resilient cities’ debates is established. By placing advanced sophisticated information and communication technologies (ICTs) at the heart of the analysis, a novel dynamic ICTs’ enabled integrated framework for resilient urban systems is developed. The framework’s dynamics is defined by two hierarchically interconnected levers, i.e. that of ICTs and that of policy-design and policy-making. Drawing from qualitative analysis and process tracing, the cross-section of policy design and policy-making geared towards the most efficient and ethically sensitive use of sophisticated ICTs is queried. Subsequently, options available to cities/urban systems are discussed. Findings The ICTs’ enabled integrated framework for resilient urban systems integrates the effectiveness of migrants and refugees’ policy design and policy-making in human-centred thinking, planning and policy-design for resilient urban systems. It places resilient approaches in the spotlight of research and policy-making, naming them the most effective methods for promoting a humanistic smart cities and resilient urban systems vision. It highlights critical junctions that urban systems’ stakeholders must consider if the promise of emerging sophisticated ICTs is to be employed effectively for the entire society, including its most vulnerable members. Research limitations/implications First, when designing ICTs’ enabled integrated resilient urban systems, the key stakeholders involved in the policy-design and policy-making process, including local, national and regional authorities, must employ a holistic view to the urban systems seen through the lens of hard and soft concerns as well as considerations expressed by the receiving and incoming populations. Second, the third-sector representatives, including non-governmental organizations (NGOs) and other actors, need to be seen as peers in integrated humanistic networks, thereby contributing critical, unbiased knowledge flows to infrastructures, which promote fair and inclusive participation of migrants and refugees in local economies. Practical implications The ICTs’ enabled integrated framework for resilient urban systems promotes a humanistic smart cities’ and resilient urban systems’ vision. It suggests how to design and implement policies apt to meet the needs of both receiving and incoming populations along value chains specific to smart and resilient cities. It promotes emerging sophisticated ICTs as the subtle, yet key, enabler of data ecosystems and customized services capable of responding to critical societal needs of the receiving and the incoming populations. In addition, the framework suggests options, alternatives and strategies for urban systems’ stakeholders, including the authorities, businesses, NGOs, inhabitants and ICTs’ providers and vendors. Originality/value The value added of this paper is three-fold. At the conceptual level, by bringing together the smart cities and resilient cities debates, and incorporating sophisticated ICTs in the analysis, it makes a case for their usefulness for cities/urban areas in light of challenges these cities/urban areas confront each day. At the empirical level, this analysis maps the key challenges that cities and their stakeholders face in context of migratory flows and highlights their dual nature. At the policy-making level, this study makes a case for a sound set of policies and actions that boost effective use of ICTs beyond the smart technology hype.

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8

Son, Phan Le. "Irregular microphone array design for broadband beamforming." Signal Processing 193 (April 2022): 108431. http://dx.doi.org/10.1016/j.sigpro.2021.108431.

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9

Roumy, A., S. Guemghar, G. Caire, and S. Verdu. "Design Methods for Irregular Repeat–Accumulate Codes." IEEE Transactions on Information Theory 50, no. 8 (August 2004): 1711–27. http://dx.doi.org/10.1109/tit.2004.831778.

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10

Antoniadis, Anestis, and Dinh Tuan Pham. "Wavelet regression for random or irregular design." Computational Statistics & Data Analysis 28, no. 4 (October 1998): 353–69. http://dx.doi.org/10.1016/s0167-9473(98)90145-1.

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11

Morgan, J. P., and Brian Reck. "E-optimal design in irregular BIBD settings." Journal of Statistical Planning and Inference 137, no. 5 (May 2007): 1658–68. http://dx.doi.org/10.1016/j.jspi.2006.09.015.

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12

Balogun, Philip R., Ian D. Marsland, Ramy H. Gohary, and Halim Yanikomeroglu. "Polar Code Design for Irregular Multidimensional Constellations." IEEE Access 5 (2017): 21941–53. http://dx.doi.org/10.1109/access.2017.2763614.

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13

Tewari, Prabhat, S. Kaushik, T. M. Rao, and M. Aurora. "Unusual vaporizer design may encourage irregular practices." Journal of Anesthesia 10, no. 2 (June 1996): 153–54. http://dx.doi.org/10.1007/bf02483355.

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14

Lee, Seung-Min, Seung-Hoon Park, Yong-Sung Jang, and Eui-Jong Kim. "Proposition of Design Capacity of Borehole Heat Exchangers for Use in the Schematic-Design Stage." Energies 14, no. 4 (February 4, 2021): 822. http://dx.doi.org/10.3390/en14040822.

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This study proposes a simple ground heat exchanger design capacity that is applicable in the schematic-design stage for several configurations used for borehole heat exchangers (BHEs). Three configurations—single, compact, and irregular types—were selected, and the heat transfer rate per unit BHE was calculated considering heat interference. In a case study with a typical configuration and general range of ground thermal conductivity, the BHE heat transfer rate of the compact configuration decreased owing to heat interference as the number of BHEs increased. However, with respect to the irregular configuration, the heat transfer rate increased as the same number increased. This was attributed to the relatively large increment rate of the distance between the boreholes in the irregular configurations, making the heat recovery factor more dominant than the heat interference. The results show that the average heat transfer rate values per BHE applicable to each configuration type in the schematic-design stage were 12.1 kW for the single configuration, 5.8 kW for the compact type, and 10.3 kW for the irregular configuration. However, owing to the large range of results for each case study, the error needs to be reduced by maximally utilizing the information available at the schematic-design stage.

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15

AKIYAMA, HIROSHI. "EARTHQUAKE RESISTANT DESIGN METHOD FOR IRREGULAR STEEL FRAMES." Journal of Structural and Construction Engineering (Transactions of AIJ) 366 (1986): 67–75. http://dx.doi.org/10.3130/aijsx.366.0_67.

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16

Yue, Guosen, Xiaodong Wang, and Mohammad Madihian. "Design of Rate-Compatible Irregular Repeat Accumulate Codes." IEEE Transactions on Communications 55, no. 6 (June 2007): 1153–63. http://dx.doi.org/10.1109/tcomm.2007.898834.

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17

Kbaier Ben Ismail, D., S. Kerouédan, and C. Douillard. "Design of suitable permutations for irregular turbo codes." Electronics Letters 47, no. 13 (June 23, 2011): 748–49. http://dx.doi.org/10.1049/el.2011.0990.

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18

Garrity, Michael P. "Raytracing irregular volume data." ACM SIGGRAPH Computer Graphics 24, no. 5 (November 1990): 35–40. http://dx.doi.org/10.1145/99308.99316.

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19

Yelick, Katherine A. "Programming models for irregular applications." ACM SIGPLAN Notices 28, no. 1 (January 1993): 28–31. http://dx.doi.org/10.1145/156668.156680.

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20

Scholz, Bernhard, and Erik Eckstein. "Register allocation for irregular architectures." ACM SIGPLAN Notices 37, no. 7 (July 17, 2002): 139–48. http://dx.doi.org/10.1145/566225.513854.

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21

Sun, Ning, Yong Zhang, and Jin Wang. "Design of Automatic Measuring Instrument of Irregular Objects’ Centroid." Advanced Materials Research 102-104 (March 2010): 316–20. http://dx.doi.org/10.4028/www.scientific.net/amr.102-104.316.

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By utilizing the parallel axis theorem of moment of inertia and the graphic geometric transformation theory as well as the method of rotating and moving axis, the calculation formula of irregular objects’ centroid was derived. And on the basis of a single axis air bearing table which was used for measuring the moment of inertia of objects around a fixed axis, the complete instrument of measuring the irregular objects’ centroid was designed. The objects’ centroid and moment of inertia could be measured synchronously. Through the analysis of the influence on measuring accuracy caused by measuring factors’ errors, the method of improving the measuring accuracy of instrument was derived. The measuring instrument meets the requirement of measuring the irregular objects’ centroid precisely.

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22

Yu, Jingjing, Qi Xi, Runlei Li, Hui Tian, and Yaxi Xie. "Stochastic allocation strategy for irregular arrays based on geometric feature control." International Journal of Distributed Sensor Networks 16, no. 5 (May 2020): 155014772092177. http://dx.doi.org/10.1177/1550147720921775.

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Irregularities in microphone distribution enrich the diversity of spatial differences to decorrelate interferences from the beamforming target. However, the large degrees of freedom of irregular placements make it difficult to analyse and optimize array performance. This article proposes fast and feasible optimal irregular array design methods with improved beamforming performance for human speech. Important geometric features are extracted to be used as the input vector of the neural network structure to determine the optimal irregular arrangements of sensors. In addition, a hyperbola design method is proposed to directly cluster microphones in the hyperbola areas to produce rich differential distance entropies and yield significant signal-to-noise ratio improvements. These methods can be easily applied to guide non-computer-aided optimal irregular array designs for human speech in acoustic scenes such as immersive cocktail party environments.

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23

Ryu, Cheong-Ro, and Toru Sawaragi. "A NEW DESIGN METHOD OF RUBBLE MOUND STRUCTURES." Coastal Engineering Proceedings 1, no. 20 (January 29, 1986): 161. http://dx.doi.org/10.9753/icce.v20.161.

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A new design method of rubble mound structures with stability and wave control consideration is proposed, by which the reduction of wave reflection and run-up and increase in rubble stability are assured under the given wave conditions. Wave control and stability increasing functions due to change of the slope shape of rubble mound structures are discussed on the basis of the experimental results for regular and irregular waves. The new design formula developed here considered the allowable percentage of damage and the wave grouping effects on rubble stability using a new assumption of the mean run-sum as an index of the irregular wave force. The run-sum is defined as the energy sum of a run satisfying a critical wave condition and the mean run-sum is the mean of run-sum for a irregular wave train.

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24

Iijima, Kazuhiro, Masahiko Fujikubo, Hiroki Hotta, and Kento Nakamura. "Design irregular wave train for nonlinear response by FORM." Journal of the Japan Society of Naval Architects and Ocean Engineers 19 (2014): 101–10. http://dx.doi.org/10.2534/jjasnaoe.19.101.

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25

Fukasawa, Toichi. "Maximum Response Estimation by means of Design Irregular Wave." Journal of the Japan Society of Naval Architects and Ocean Engineers 2 (2005): 123–29. http://dx.doi.org/10.2534/jjasnaoe.2.123.

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26

Fukasawa, Toichi, Yuji Kanehira, and Satoshi Miyazaki. "Maximum Response Estimation by means of Design Irregular Wave." Journal of the Japan Society of Naval Architects and Ocean Engineers 4 (2006): 221–27. http://dx.doi.org/10.2534/jjasnaoe.4.221.

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27

Li, Er-bao, Jing Lei, and Fu-bing Xu. "Design and Optimization of Degree Distributions of Irregular LDPC." Journal of Electronics & Information Technology 30, no. 11 (April 20, 2011): 2788–91. http://dx.doi.org/10.3724/sp.j.1146.2007.00799.

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28

Yadav, Abhishek, Shobhit Bhardwaj, Zenia Karam, and Madhuri Kumari. "Analytical Design of Irregular Buildings founded on soft soil." IOP Conference Series: Materials Science and Engineering 1197, no. 1 (November 1, 2021): 012015. http://dx.doi.org/10.1088/1757-899x/1197/1/012015.

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Abstract In modern day, due to the need of unique architectural appearance or aesthetics of building, irregularities in mass, stiffness and symmetry may get disturbed, making the whole structure vulnerable to certain damages either minor or major. Some of the functional considerations of these structures are use of ground floor as car parking in residential buildings, use of basement as car parking in malls, etc. Seismic range is one the most important factors to be considered to analyze any irregular structure. In this study, the design of different G+6 structures having vertical regularity was done. These irregular structure models were compared with a regular G+6 structure having similar properties as other structures. For the designing and analysis of these structures, use of StaadPro software was done. It is one of the most used software, whenever it comes to the digital analysis of any structure. Different types of Vertical irregularities like mass irregularity, Vertical Setback Irregularity, Stiffness Irregularity (Discontinuous Column, Middle weak storey and Bottom Weak Storey) were considered for the analysis. The Seismic Zone for the structure is considered to be Delhi (Seismic Zone IV) with a Seismic Factor of 0.24. All the model structures were compared for the parameters of their Storey Drift and Storey Displacement. For irregular buildings though, certain damages/fatigue may be observed in some structures but the structures will not fail and will be serviceable for a long time with proper care. It was observed that the structures with stiffness irregularity showed the most increase in storey displacement and storey drift values.

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29

Kim, Dong Young, and Thomas Siegmund. "Mechanics and design of topologically interlocked irregular quadrilateral tessellations." Materials & Design 212 (December 2021): 110155. http://dx.doi.org/10.1016/j.matdes.2021.110155.

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30

Georgakis, C. T., and D. K. MacKenzie. "Comparison of seismic design methods for irregular RC bridges." Proceedings of the Institution of Civil Engineers - Structures and Buildings 152, no. 2 (May 2002): 167–73. http://dx.doi.org/10.1680/stbu.2002.152.2.167.

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31

Xu, Jianshe, Cheng Fang, Wei Wang, and Guangming Chen. "Structural design of irregular curved lattice shells in China." Proceedings of the Institution of Civil Engineers - Civil Engineering 172, no. 5 (May 2019): 37–47. http://dx.doi.org/10.1680/jcien.18.00034.

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32

HOOPER, JA, and A. PHILIASTIDES. "DESIGN OF A FLEXIBLE RAFT FOUNDATION OF IRREGULAR SHAPE." Proceedings of the Institution of Civil Engineers 80, no. 4 (August 1986): 1013–38. http://dx.doi.org/10.1680/iicep.1986.637.

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33

Das, Satrajit, and James M. Nau. "Seismic Design Aspects of Vertically Irregular Reinforced Concrete Buildings." Earthquake Spectra 19, no. 3 (August 2003): 455–77. http://dx.doi.org/10.1193/1.1595650.

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Seismic building codes such as the Uniform Building Code (UBC) do not allow the equivalent lateral force (ELF) procedure to be used for structures with vertical irregularities. The purpose of this study is to investigate the definition of irregular structures for different vertical irregularities: stiffness, strength, mass, and that due to the presence of nonstructural masonry infills. An ensemble of 78 buildings with various interstory stiffness, strength, and mass ratios is considered for a detailed parametric study. The lateral force-resisting systems (LFRS) considered are special moment-resisting frames (SMRF). These LFRS are designed based on the forces obtained from the ELF procedure. The results from linear and nonlinear dynamic analyses of these engineered buildings exhibit that most structures considered in this study performed well when subjected to the design earthquake. Hence, the restrictions on the applicability of the equivalent lateral force procedure are unnecessarily conservative for certain types of vertical irregularities considered.

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34

Lee, Xia Sheng, Chung Pui Yan, and Zi Siang See. "Irregular Shaped Building Design Optimization with Building Information Modelling." MATEC Web of Conferences 66 (2016): 00027. http://dx.doi.org/10.1051/matecconf/20166600027.

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35

Zakharov, A. V. "Design of resonators from sections of irregular transmission lines." Journal of Communications Technology and Electronics 61, no. 11 (November 2016): 1294–304. http://dx.doi.org/10.1134/s1064226916110127.

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36

Song, Guo-Hua, Shi-Kai Jing, Fang-Lei Zhao, Ye-Dong Wang, Hao Xing, and Jing-Tao Zhou. "Design Optimization of Irregular Cellular Structure for Additive Manufacturing." Chinese Journal of Mechanical Engineering 30, no. 5 (July 27, 2017): 1184–92. http://dx.doi.org/10.1007/s10033-017-0168-3.

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37

Adeli, Hojjat, and Nabil S. Mabrouk. "Optimum plastic design of unbraced frames of irregular configuration." International Journal of Solids and Structures 22, no. 10 (1986): 1117–28. http://dx.doi.org/10.1016/0020-7683(86)90021-1.

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38

H., Raad, and Saif Nadhim. "Design of Novel Wideband CPW Irregular Pentagonal Patch Antenna." International Journal of Computer Applications 139, no. 4 (April 15, 2016): 31–37. http://dx.doi.org/10.5120/ijca2016909149.

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39

Popiński, Waldemar. "Least squares orthogonal polynomial regression estimation for irregular design." Communications in Statistics - Theory and Methods 49, no. 3 (December 31, 2018): 631–47. http://dx.doi.org/10.1080/03610926.2018.1549244.

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40

Morton, J. "The design of masonry compression members of irregular planform." Construction and Building Materials 5, no. 4 (December 1991): 170–76. http://dx.doi.org/10.1016/0950-0618(91)90045-m.

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41

Goren, Mor, and Ram Zamir. "Diversity Image Coding Using Irregular Interpolation." IEEE Transactions on Image Processing 30 (2021): 5665–77. http://dx.doi.org/10.1109/tip.2021.3087404.

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42

Baghsorkhi, Sara S., Nalini Vasudevan, and Youfeng Wu. "FlexVec: auto-vectorization for irregular loops." ACM SIGPLAN Notices 51, no. 6 (August 2016): 697–710. http://dx.doi.org/10.1145/2980983.2908111.

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43

Nguyen, Donald, and Keshav Pingali. "Synthesizing concurrent schedulers for irregular algorithms." ACM SIGPLAN Notices 46, no. 3 (March 17, 2011): 333–44. http://dx.doi.org/10.1145/1961296.1950404.

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44

Lin, Yuan, and David Padua. "Compiler analysis of irregular memory accesses." ACM SIGPLAN Notices 35, no. 5 (May 2000): 157–68. http://dx.doi.org/10.1145/358438.349322.

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45

Gao, Qiong Yao, and Hao Wei Kuang. "Structural Design of Gymnasium of Diannan Green Hotel." Applied Mechanics and Materials 584-586 (July 2014): 1885–88. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.1885.

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Gymnasium of Greenlake View Hotel, including all kinds of complicated function, is the key seismic precautionary category building. The structure is characteristic of over-length, irregular plane and irregular elevation. Reinforced concrete frame form is adopted according to plane form and use function. The weak areas have been found by analysis, comparison and review of calculation based on multiple structural analysis programs. Finally, we can guarantee the security of structure in two ways: one is strengthening the weak areas by adopting some measures; the other is executing strictly all indicators of standards.

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46

Zhao, Haiyuan, Yafeng Han, Chen Pan, Ding Yang, Haotian Wang, Tingyu Wang, Xinyun Zeng, and Penglei Su. "Design and Mechanical Properties Verification of Gradient Voronoi Scaffold for Bone Tissue Engineering." Micromachines 12, no. 6 (June 5, 2021): 664. http://dx.doi.org/10.3390/mi12060664.

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In order to obtain scaffold that can meet the therapeutic effect, researchers have carried out research on irregular porous structures. However, there are deficiencies in the design method of accurately controlling the apparent elastic modulus of the structure at present. Natural bone has a gradient porous structure. However, there are few studies on the mechanical property advantages of gradient bionic bone scaffold. In this paper, an improved method based on Voronoi-tessellation is proposed. The method can get controllable gradient scaffolds to fit the modulus of natural bone, and accurately control the apparent elastic modulus of porous structure, which is conducive to improving the stress shielding. To verify the designed structure can be fabricated by additive manufacturing, several designed models are obtained by SLM and EBM. Through finite element analysis (FEA), it is verified that the irregular porous structure based on Voronoi-tessellation is more stable than the traditional regular porous structure of the same structure volume, the same pore number and the same material. Furthermore, it is verified that the gradient irregular structure has a better stability than the non-gradient structure. An experiment is conducted successfully to verify the stability performance got by FEA. In addition, a dynamic impact FEA is also performed to simulate impact resistance. The result shows that the impact resistance of the regular porous structure, the irregular porous structure and the gradient irregular porous structure becomes better in turn. The mechanical property verification provides a theoretical basis for the structural design of gradient irregular porous bone tissue engineering scaffolds.

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47

Erdinest, Nir, Ortal Palatchi Sabag, Naomi London, and Abraham Solomon. "Quadrant Asymmetric Design Contact Lens for Visual Rehabilitation after Eye Trauma." Case Reports in Ophthalmology 12, no. 2 (May 6, 2021): 330–36. http://dx.doi.org/10.1159/000512505.

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The purpose of this case report is to demonstrate the efficacy of an asymmetric peripheral design scleral contact lens in a case of highly irregular corneal-scleral pattern due to trauma. A 63-year-old patient was involved in a jeep accident which caused a partial-thickness penetrating injury to the peripheral cornea of his left eye. The subsequent corneal irregularity extended beyond the limbus into the sclera which made it difficult to stabilize a contact lens. A quadrant specific peripheral curve (quadrant asymmetric periphery) scleral contact lens successfully resulted in improved comfort and visual acuity. This is the first known published case to use this lens design to correct a post-trauma irregular cornea-scleral relationship. Quadrant asymmetric periphery scleral contact lenses can be effective in cases of severe irregular corneal-scleral patterns.

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48

Li, Fang. "Design of Measurement System of the Center of Gravity." Advanced Materials Research 706-708 (June 2013): 733–36. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.733.

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Abstract:

It is very difficult to confirm the position of the center of gravity irregular object.This paper introduces a new system,which can be used in measuring and adjusting of the center of gravity.The irregular object was put on the support parts,then the center of gravity was given.When the actual position was compared with the ideal position,the difference was given. Until actual position and ideal position were coincided,the machining was continuing. Matlab was programmed in this measure system. It will be applied widely in the future.

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Zhang, Yu-jie, Shu-xi Gong, Wen-tao Wang, and Jin Ling. "Optimization Design of Conformal Array on an Irregular Curved Surface." Journal of Electronics & Information Technology 32, no. 9 (December 2, 2010): 2226–30. http://dx.doi.org/10.3724/sp.j.1146.2009.01212.

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50

Deng, Hong Yu, and Bai Tao Sun. "Torsional Design Method of Bottom Frame Structure with Irregular Plane." Applied Mechanics and Materials 716-717 (December 2014): 460–64. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.460.

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Abstract:

For the study of irregular plane adverse impacts on the bottom frame structure seismic performance, in this paper, a serious damaged bottom frame structure in Wenchuan earthquake is taken as the research object,and a comparative calculation model is designed and elasto-plastic time-history analysis is carried out on the use of ABAQUS finite element software. The calculation results show that: the stiffness center of floor with irregular plane does not coincide with the center of mass, this eccentricity will produce torsional response under horizontal earthquake action. Bottom frame shear layer has strong stiffness at the center, around the lack of lateral load resisting member will cause interlayer torsional rigidity insufficient, further increasing the torsional response of structures, aggravated the damage. The lateral stiffness ratio under the same conditions,the design method of the contrast model is more reasonable, and has lighter damage under the the same intensity grade, improve the seismic capability of the structure, and provides the ideas of design method of this kind of structure.

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