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Journal articles on the topic 'Capacity spectrum-based methods'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Chopra, Anil K., and Rakesh K. Goel. "Capacity-Demand-Diagram Methods Based on Inelastic Design Spectrum." Earthquake Spectra 15, no. 4 (1999): 637–56. http://dx.doi.org/10.1193/1.1586065.

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An improved capacity-demand-diagram method that uses the well-known constant-ductility design spectrum for the demand diagram is developed and illustrated by examples. This method estimates the deformation of inelastic SDF systems consistent with the selected inelastic design spectrum, while retaining the attraction of graphical implementation of the ATC-40 Nonlinear Static Procedure. One version of the improved method is graphically similar to ATC-40 Procedure A whereas the second version is graphically similar to ATC-40 Procedure B. However, the improved procedures differ from ATC-40 procedu

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2

Wan, Hai Tao, and Lin Yang. "Method of Performance-Based Design." Applied Mechanics and Materials 438-439 (October 2013): 1603–6. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.1603.

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In order to overcome some deficiency of design, American earthquake engineering and structural engineering experts have profound conclusion after the previous earthquakes, improved bearing capacity design method, put forward the theory of performance-based design. Methods of performance-based design mainly include displacement coefficient method; direct displacement based design method, capacity spectrum method and improved capacity spectrum method. Through the understanding of the main methods, enable us to better understand performance-based design, so as to improve the design of civil engin

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3

Lantada, Nieves, Luis G. Pujades, and Alex H. Barbat. "Vulnerability index and capacity spectrum based methods for urban seismic risk evaluation. A comparison." Natural Hazards 51, no. 3 (2008): 501–24. http://dx.doi.org/10.1007/s11069-007-9212-4.

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Priestley, M. J. N. "Does capacity design do the job?" Bulletin of the New Zealand Society for Earthquake Engineering 36, no. 4 (2003): 276–92. http://dx.doi.org/10.5459/bnzsee.36.4.276-292.

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Current provisions in the New Zealand Loadings code for dynamic amplification of moment and shear force in cantilever wall buildings are critically examined. Based on time-history analyses of six wall structures, from two- to twenty-storeys, it is found that higher mode effects are inadequately represented by either the equivalent lateral force or modal response spectrum design methods. The time-history results indicate that dynamic amplification is dependent on both initial period, and expected displacement ductility level. Two different methods for consideration of higher mode effects

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Zhang, Jing, Duixian Gao, and Zhiwei Chen. "The Equivalent Damping Ration in Capacity Spectrum Method." Advanced Materials Research 163-167 (December 2010): 4290–94. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.4290.

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Study the calculation method of equivalent damping ratio in Capacity Spectrum Method. Analyzing the feature of several methods for the calculation of equivalent damping ratio in the world, from the numeral example, the numeral results of several calculation methods of equivalent damping ratio are compared to the results of time course method. The follow conclusions are reached: Secant stiffness method overestimate the value of equivalent damping ratio for steel structure, therefore, underestimate the supreme seismic reaction. The level of underestimate is interrelate to yield still coefficient

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Zhou, Dao Chuan, Guo Rong Chen, and Li Ying Nie. "Displacement-Based Design for RC Bridge Columns Based on Chinese Code." Advanced Materials Research 243-249 (May 2011): 3808–19. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3808.

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A comprehensive study of displacement-based design for reinforced concrete bridge columns is conducted. Section analysis software UC-Fyber is used to analyze the bending moment and curvature performance of columns’ sections, based on this, a new calculation method of target displacement of RC bridge columns is educed. Elastic displacement response spectrum, inelastic displacement response spectrum and inelastic demand spectrum are educed from acceleration spectra of Chinese Code JTG/T B02-01-2008; three simplified methods for displacement demand determination are developed. Example of the disp

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Yang, Min, and Ming Yan Jiang. "Hybrid Spectrum Access and Power Allocation Based on Improved Hopfield Neural Networks." Advanced Materials Research 588-589 (November 2012): 1490–94. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.1490.

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This paper aims to solve the optimization power allocation problem based on cognitive radio network system. We propose a Hybrid Spectrum Access (HSA) method which considers the total transmit power constraint, the peak power constraint and the primary users’ tolerance. In order to solve this combinational optimization problem and achieve the global optimal solution, we derived a Simulated Annealing-Hopfield neural networks (SA-HNN). The simulation results of the optimized ergodic capacity shows that the proposed optimization problem can be solved more efficiently and better by SA-HNN than HNN

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8

Li, Shanshan, Ping Xiang, Biao Wei, Lu Yan, and Ye Xia. "A Nonlinear Static Procedure for the Seismic Design of Symmetrical Irregular Bridges." Shock and Vibration 2020 (September 26, 2020): 1–16. http://dx.doi.org/10.1155/2020/8899705.

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Displacement-based seismic design methods support the performance-based seismic design philosophy known to be the most advanced seismic design theory. This paper explores one common type of irregular-continuous bridges and studies the prediction of their elastoplastic displacement demand, based on a new nonlinear static procedure. This benefits to achieve the operation of displacement-based seismic design. Three irregular-continuous bridges are analyzed to advance the equivalent SDOF system, build the capacity spectrum and the inelastic spectrum, and generate the new nonlinear static analysis.

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Schoo, Adrian M., Rosalie A. Boyce, Lee Ridoutt, and Teresa Santos. "Workload capacity measures for estimating allied health staffing requirements." Australian Health Review 32, no. 3 (2008): 548. http://dx.doi.org/10.1071/ah080548.

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Workforce planning methodologies for the allied health professions are acknowledged as rudimentary despite the increasing importance of these professions to health care across the spectrum of health services settings. The objectives of this study were to (i) identify workload capacity measures and methods for profiling allied health workforce requirements from a systematic review of the international literature; (ii) explore the use of these methods in planning workforce requirements; (iii) identify barriers to applying such methods; and (iv) recommend further action. Future approaches to work

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Wang, Li Yong, Xiao Li Xu, and Guo Xin Wu. "Grey Modeling Method of Wear Prediction for Reciprocating Machinery Based on Spectrum Analysis." Applied Mechanics and Materials 120 (October 2011): 582–86. http://dx.doi.org/10.4028/www.scientific.net/amm.120.582.

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Oil spectrum analysis technology is an important method to research wear of mechanism without unpacking, based on the characteristics of limited amount of oil analysis samples and randomness of sample data changes to apply gray theory to prediction of wearing capacity of reciprocating engine. When gray modeling, if sample data does not meet smoothness conditions, firstly parametric process is carried out for the data in order to weaken randomness of the original random sequence, then equal interval process for initial data sequence is conducted and sequence of gray values is determined accordi

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11

Dikmese, Sener, Sudharsan Srinivasan, Musbah Shaat, Faouzi Bader, and Markku Renfors. "Spectrum sensing and resource allocation for multicarrier cognitive radio systems under interference and power constraints." EURASIP Journal on Advances in Signal Processing 2014, no. 68 (2014): 1687–6180. https://doi.org/10.5281/zenodo.58002.

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Multicarrier waveforms have been commonly recognized as strong candidates for cognitive radio. In this paper, we study the dynamics of spectrum sensing and spectrum allocation functions in cognitive radio context using very practical signal models for the primary users (PUs), including the effects of power amplifier nonlinearities. We start by sensing the spectrum with energy detection-based wideband multichannel spectrum sensing algorithm and continue by investigating optimal resource allocation methods. Along the way, we examine the effects of spectral regrowth due to the inevitable power am

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Yao, Changhua, Qihui Wu, and Linfang Zhou. "Traffic Based Optimization of Spectrum Sensing in Cognitive Radio Networks." Mathematical Problems in Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/349350.

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We propose a more practical spectrum sensing optimization problem in cognitive radio networks (CRN), by considering the data traffic of second user (SU). Compared with most existing work, we do not assume that SU always has packets to transmit; instead, we use the actual data transmitted per second rather than the channel capacity as the achievable throughput, to reformulate the Sensing-Throughput Tradeoff problem. We mathematically analyze the problem of optimal sensing time to maximize the achievable throughput, based on the data traffic of SU. Our model is more general because the tradition

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Kümmerle, Michael, Siegfried Scherer, and Herbert Seiler. "Rapid and Reliable Identification of Food-Borne Yeasts by Fourier-Transform Infrared Spectroscopy." Applied and Environmental Microbiology 64, no. 6 (1998): 2207–14. http://dx.doi.org/10.1128/aem.64.6.2207-2214.1998.

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ABSTRACT Computer-based Fourier-transform infrared spectroscopy (FT-IR) was used to identify food-borne, predominantly fermentative yeasts. Dried yeast suspensions provided the films suitable for FT-IR measurement. Informative windows in the spectrum were selected and combined to achieve optimal results. A reference spectrum library was assembled, based on 332 defined yeast strains from international yeast collections and our own isolates. All strains were identified with conventional methods using physiological and morphological characteristics. In order to assess identification quality, anot

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14

Rajalakshmi and P.Sumathy. "Spectrum Allocation in Cognitive Radio - Simplified Swarm Optimization Based Method." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 1636–41. https://doi.org/10.35940/ijeat.C5439.029320.

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Communication through wireless mode is accelerated its expansion in broad manner that make a way to communicate with different type of computing devices to interact each other. As the number of users continues to increase, there is a constant demand for the usability of radio spectrum, which is a limited resource.Therefore a maximum utilization of spectrum is necessary at any moment. Moreover it is desired to share the capacity of the bandwidth between the user’s application on the basis of different channel utilization without compromising efficiency and fairness. Because cognitive syst

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Nicholas, David B., Lonnie Zwaigenbaum, Jennifer Zwicker, et al. "Evaluation of employment-support services for adults with autism spectrum disorder." Autism 22, no. 6 (2017): 693–702. http://dx.doi.org/10.1177/1362361317702507.

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The employment rate among persons with autism spectrum disorder has been noted as unacceptably low. Employment-support services are increasingly linked to the potential for favorable job outcomes, yet little is known about employment-support practices and the outcome of these interventions. This mixed-methods study examined employment-support resources for persons with autism spectrum disorder. An online survey was completed by 137 senior clinicians or administrators in employment-support programs in Canada. Additionally, 122 follow-up interviews were conducted with individuals with autism spe

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Mutescu, Partemie-Marian, Valentin Popa, and Alexandru Lavric. "LoRa Communications Spectrum Sensing Based on Artificial Intelligence: IoT Sensing." Sensors 25, no. 9 (2025): 2748. https://doi.org/10.3390/s25092748.

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The backbone of the Internet of Things ecosystem relies heavily on wireless sensor networks and low-power wide area network technologies, such as LoRa modulation, to provide the long-range, energy-efficient communications essential for applications as diverse as smart homes, healthcare, agriculture, smart grids, and transportation. With the number of IoT devices expected to reach approximately 41 billion by 2034, managing radio spectrum resources becomes a critical issue. However, as these devices are deployed at an increasing rate, the limited spectral resources will result in increased inter

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17

Ferraioli, Massimiliano, Alberto M. Avossa, Angelo Lavino, and Alberto Mandara. "Accuracy of Advanced Methods for Nonlinear Static Analysis of Steel Moment-Resisting Frames." Open Construction and Building Technology Journal 8, no. 1 (2014): 310–23. http://dx.doi.org/10.2174/1874836801408010310.

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The reliability of advanced nonlinear static procedures to estimate deformation demands of steel momentresisting frames under seismic loads is investigated. The advantages of refined adaptive and multimodal pushover procedures over conventional methods based on invariant lateral load patterns are evaluated. In particular, their computational attractiveness and capability of providing satisfactory predictions of seismic demands in comparison with those obtained by conventional force-based methods are examined. The results obtained by the static advanced methods, used in the form of different va

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18

Grave de Peralta Menendez, Rolando, Quentin Noirhomme, Febo Cincotti, Donatella Mattia, Fabio Aloise, and Sara González Andino. "Modern Electrophysiological Methods for Brain-Computer Interfaces." Computational Intelligence and Neuroscience 2007 (2007): 1–8. http://dx.doi.org/10.1155/2007/56986.

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Modern electrophysiological studies in animals show that the spectrum of neural oscillations encoding relevant information is broader than previously thought and that many diverse areas are engaged for very simple tasks. However, EEG-based brain-computer interfaces (BCI) still employ as control modality relatively slow brain rhythms or features derived from preselected frequencies and scalp locations. Here, we describe the strategy and the algorithms we have developed for the analysis of electrophysiological data and demonstrate their capacity to lead to faster accurate decisions based on line

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19

Contiguglia, Carlotta Pia, Angelo Pelle, Bruno Briseghella, and Camillo Nuti. "IMPA versus Cloud Analysis and IDA: Different Methods to Evaluate Structural Seismic Fragility." Applied Sciences 12, no. 7 (2022): 3687. http://dx.doi.org/10.3390/app12073687.

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Well-known methods for seismic performance assessment, such as incremental dynamic analysis (IDA), multi-stripes analysis (MSA) and the cloud method, involve nonlinear response time-history analyses to characterize the relationship between the chosen damage measure versus intensity measure. Over the past two decades, many authors have proposed simplified procedures or nonlinear static approaches to develop fragility. In these procedures, the capacity of the system is evaluated by nonlinear static procedures (i.e., the capacity spectrum method (CSM), the N2 method, modal pushover analysis (MPA)

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20

Evdokimov, V. B., A. A. Artamonov, E. V. Plotnikov, and N. A. Konstantinova. "RESOURCE-EFFICIENT METHODS FOR PREDICTING AND SELECTING HEAT-RESISTANT ALLOYS." Resource-Efficient Technologies, no. 2 (July 11, 2019): 17–28. http://dx.doi.org/10.18799/24056537/2019/2/233.

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The power plant resource efficiency is largely dependent on heat-resistant alloys and is limited by the standard turbine operating temperature, which is slightly greater than 1000°C. These temperature limits are dependent on the characteristics of the heat-resistant alloys used in power plants. The current research aimed to discover new heat-resistant alloys using computer-based models to simulate the various properties of such materials. The first-principle methods were initially used in this study. These methods can determine the most important properties of alloys with a high degree of accu

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21

Evdokimov, V. B., A. A. Artamonov, E. V. Plotnikov, and N. A. Konstantinova. "RESOURCE-EFFICIENT METHODS FOR PREDICTING AND SELECTING HEAT-RESISTANT ALLOYS." Resource-Efficient Technologies, no. 2 (July 11, 2019): 17–28. http://dx.doi.org/10.18799/24056529/2019/2/233.

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The power plant resource efficiency is largely dependent on heat-resistant alloys and is limited by the standard turbine operating temperature, which is slightly greater than 1000°C. These temperature limits are dependent on the characteristics of the heat-resistant alloys used in power plants. The current research aimed to discover new heat-resistant alloys using computer-based models to simulate the various properties of such materials. The first-principle methods were initially used in this study. These methods can determine the most important properties of alloys with a high degree of accu

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22

Zou, Zhong Quan, Li Ping Zhou, and Guo Jing He. "Seismic Analysis of Continuous Rigid Frame Bridge with Energy-Based Modal Pushover Method." Advanced Materials Research 163-167 (December 2010): 3939–42. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3939.

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Energy-based modal pushover analysis method has been proved to be an appropriate approach to perform seismic analysis for structures whose high mode effect is not negligible. It directly establishes the capacity spectrum based on energy increments, which corrects the deficiency of conventional modal pushover method that the capacity curve would not be unique or even be retorted while the base shear-top displacement curve is established with respect to different reference nodes of the structure. In this paper, a continuous rigid frame bridge with tall piers in seismic zone is analyzed with EMPA

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23

Swathi, S., Katta Venkataramana, and C. Rajasekaran. "Evaluation of Performance Point of Structure Using Capacity Spectrum Method." Applied Mechanics and Materials 877 (February 2018): 299–304. http://dx.doi.org/10.4028/www.scientific.net/amm.877.299.

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Performance-based seismic design (PBSD) is an approach, in which the design aim is to deliver a structure capable of meeting certain predictable performance objectives under different levels of earthquake motions. In order to ensure the desirable performance of buildings or structures, the structural parameters such as strength, stiffness and ductility or deformability should be reasonably proportioned. Conventional methods of seismic design have the objectives to provide life safety (strength and ductility) and damage control (serviceability drift limits). However, little information is avail

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Arvind, S., Pradeep Balasubramani, D. Hemanand, et al. "Utilizing deep learning and optimization methods to enhance the security of large datasets in cloud computing environments." MATEC Web of Conferences 392 (2024): 01143. http://dx.doi.org/10.1051/matecconf/202439201143.

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Many firms are outsourcing their information and computational needs because of the fast advancement of modern computing technology. Cloud-based computing systems must provide safeguards, including privacy, accessibility, and integrity, making a highly reliable platform crucial. Monitoring malware behavior throughout the whole characteristic spectrum significantly enhances security tactics compared to old methods. This research offers a novel method to improve the capacity of Cloud service suppliers to analyze users' behaviors. This research used a Particle Swarm Optimization-based Deep Learni

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Yang, Won Seok, Eun Saem Yang, Hwa J. Kim, and Dae K. Kim. "Estimation of Spectrum Requirements for Mobile Networks With Self-Similar Traffic, Handover, and Frequency Reuse." Mobile Information Systems 6, no. 4 (2010): 281–91. http://dx.doi.org/10.1155/2010/129295.

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This paper considers self-similarity in data traffic, handover, and frequency reuse to estimate the spectrum requirements of mobile networks. An approximate average cell capacity subject to a delay requirement and self-similar traffic is presented. It is shown that handover traffic can be an additional load. Spectrum requirements are calculated based on carrier demand instead of spectral efficiency, as at least one carrier is necessary to transmit even 1 bit. The cell-split operation is considered under frequency reuse of one. Estimation methods are presented using cell traffic in two cases. F

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Li, Jingxian, and Bin-Jie Hu. "Quantized Cooperative Spectrum Sensing in Bandwidth-Constrained Cognitive V2X Based on Deep Learning." Electronics 10, no. 11 (2021): 1315. http://dx.doi.org/10.3390/electronics10111315.

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The output of the network in a deep learning (DL) based single-user signal detector, which is a normalized 2 × 1 class score vector, needs to be transmitted to the fusion center (FC) by occupying a large amount of the communication channel (CCH) bandwidth in the cooperative spectrum sensing (CSS). Obviously, in cognitive radio for vehicle to everything (CR-V2X), it is particularly important to propose a method that makes full use of the bandwidth-constrained CCH to obtain the optimal detection performance. In this paper, we firstly propose a novel single-user spectrum sensing method based on m

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Abdykadyrov, Askar, Mukhit Abdullayev, Ainur Kuttybayeva, et al. "Development and evaluation of radio frequency management approaches for stratospheric communication systems." Eastern-European Journal of Enterprise Technologies 3, no. 5 (135) (2025): 17–29. https://doi.org/10.15587/1729-4061.2025.331607.

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The object of the study is the methods of radio frequency resource management in stratospheric communication systems based on high altitude platform stations (HAPS). The problem addressed is the limited radio frequency spectrum, frequency overlap with fifth- and sixth-generation (5G/6G) networks, and the high probability of interference, which complicate efficient spectrum utilization and coordination. The obtained results indicate that within the frequency bands recommended by the International Telecommunication Union (ITU) — 21.4–22.0 GHz, 24.25–27.5 GHz, 47.2–47.5 GHz, and 47.9–48.2 GHz — t

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28

Wulansar, Laela, Dewi Septaningsih, Tsania Purnomo, et al. "Antioxidant Capacity, Phytochemical Profile, and Clustering of Pomegranate (<i>Punica granatum</i> L.) Peel Extracts Using Different Solvent Extraction." Journal of Tropical Life Science 11, no. 3 (2021): 375–82. http://dx.doi.org/10.11594/jtls.11.03.14.

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Pomegranate has valuable nutritional content and contains various bioactive compounds, one found in the fruit's peel. The utilization of these bioactive compounds could be used as herbal medicines and supplements, such as antioxidants. This study aimed to determine the antioxidant capacity, phytochemical profile, and pomegranate peel extract grouping using different extracting solvents. The three extracting solvents used were water, 70% ethanol, and ethanol p.a. Antioxidant capacity of the three extracts was measured using the DPPH and CUPRAC methods. We also determined the total phenolic and

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Ertanto, Boby Culius, Iman Satyarno, and Bambang Suhendro. "PERFORMANCE BASED DESIGN BANGUNAN GEDUNG UNTUK LEVEL KINERJA OPERASIONAL." INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur 13, no. 2 (2017): 189–204. http://dx.doi.org/10.21831/inersia.v13i2.17182.

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ABSTRACT Indonesia is an area with high earthquake risk, where earthquake-resistant design is required, in critical category IV buildings such as hospitals and educational buildings must be designed to remain operation during and after the earthquake design, without significant damage. owners have the ability to establish and know the performance levels of structures designed with performance-based design methods that impact on development costs, repair costs and reduce casualties due to earthquakes. there are two performance based design methods namely pushover and nonlinear history of time (

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Anielak, Anna M., Renata Świderska-Dąbrowska, Dominika Łomińska-Płatek, Tomasz Dąbrowski, and Krzysztof Piaskowski. "Methods for Obtaining Humus Substances: Advantages and Disadvantages." Applied Sciences 15, no. 5 (2025): 2463. https://doi.org/10.3390/app15052463.

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The paper reviews the patent descriptions of methods for obtaining humic substances and the procedures used in their industrial production. Selected humus substances, obtained using three different methods, were also examined. In the first one, humic substances were obtained due to the hydrolytic-oxidative decomposition of lignosulfonate. The second one consists of alkaline extraction from brown coal. According to the third, humus substances were extracted from digested sewage sludge. In the obtained humus substances, molecular composition, inorganic impurities, IR spectrum, gravimetric analys

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Юдин, Алексей, Aleksey Yudin, Евгений Елисеичев, Evgeniy Eliseichev, Виктор Юдин, and Viktor Yudin. "ALTERNATING VOLTAGE CONTROL SYSTEM WITH SPECTRAL STRUCTURE CONTROL." Bulletin of Bryansk state technical university 2019, no. 4 (2019): 68–75. http://dx.doi.org/10.30987/article_5cb58f51d8b1e2.80454148.

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The purpose of the work is development of the algorithm for the operation of a system to control alter-nating voltage ensuring minimum changes of a voltage spectral structure. It is necessary for precision electro-technologies such as growing monocrystals in which high frequency constituents in spectrum result in the uneven release of induced power into a melt.  The investigation methods are based on a com-puter simulation of alternating voltage control processes, for the analysis of a spectral structure there is used discrete Fourier transformation. The mathematical support developed fo

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Simonov-Emelyanov, I. D., and K. I. Kharlamova. "Technological classification of dispersed fillers by size and design of polymer composites with different types of structures." Plasticheskie massy, no. 9-10 (November 28, 2022): 3–6. http://dx.doi.org/10.35164/0554-2901-2022-9-10-3-6.

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The paper presents data on the determination of oil capacity and oligomer capacity of dispersed fillers based on silica with different particle sizes (from 50 nm to 250 microns). It is shown that using the oil absorption and oligomeric capacity data, it is possible to carry out a complete technological classification of dispersed particles by size and use it to create disperse filled polymer composite materials (DFPCM) with a given composition, type and structure parameters, as well as a set of operational properties. The values of the maximum disperse filler content (parameter φm) in DFPCM fo

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Tian, Run, Lin Ma, Zhe Wang, and Xuezhi Tan. "Cognitive Interference Alignment Schemes for IoT Oriented Heterogeneous Two-Tier Networks." Sensors 18, no. 8 (2018): 2548. http://dx.doi.org/10.3390/s18082548.

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This paper considers interference management and capacity improvement for Internet of Things (IoT) oriented two-tier networks by exploiting cognition between network tiers with interference alignment (IA). More specifically, we target our efforts on the next generation two-tier networks, where a tier of femtocell serving multiple IoT devices shares the licensed spectrum with a tier of pre-existing macrocell via a cognitive radio. Aiming to manage the cross-tier interference caused by cognitive spectrum sharing as well as ensure an optimal capacity of the femtocell, two novel self-organizing co

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Mahmoud, Serraye, and Amri Salima. "Developed approach to determine the seismic vulnerability of reinforced concrete structures." MATEC Web of Conferences 149 (2018): 02078. http://dx.doi.org/10.1051/matecconf/201814902078.

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Several evaluation methods of the seismic vulnerability have been developed around the world. Which are very use ful from humanitarian and socioeconomic point of view. Generally these methods use knowledge obtained from previous earthquakes and they are basing on seismic intensity scales and on buildings direct observation. But the macroseismic intensity expresses the consequences of the seism, and not its physical characteristics of the structures. Contrary to this type of methods, an approach based on a nonlinear analysis (Push-Over method) is proposed in this work. It consists in modeling t

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Lindner, Marco, Konrad Vanselow, Sandra Gelbrich, and Lothar Kroll. "Fibre-reinforced polymer stirrup for reinforcing concrete structures." Technologies for Lightweight Structures (TLS) 3, no. 1 (2020): 17–24. http://dx.doi.org/10.21935/tls.v3i1.117.

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Fibre-plastic composites offer an interesting alternative to concrete reinforcement. In order to expandthe application spectrum of reinforcing elements in fibre composite construction, a new steel-free bracingsystem with reduced radii of curvature was developed. An improvement in load carrying capacity couldbe proven in extensive investigations based on international testing methods and verified by practicaltests. With the help of newly reinforced precast concrete elements from the area of waterways and trafficroutes, a high potential for lightweight construction and resource efficiency can be

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Uribe, Raul, Siamak Sattar, Matthew S. Speicher, and Luis Ibarra. "Effect of Common U.S. Ground Motion Selection Methods on the Structural Response of Steel Moment Frame Buildings." Earthquake Spectra 35, no. 4 (2019): 1611–35. http://dx.doi.org/10.1193/122917eqs268m.

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This study quantifies the impact of two common ground motion (GM) selection methods, included in U.S. standards, on the seismic performance evaluation of steel special moment frames. The methods investigated are a “traditional” approach, herein referred to as the target maximum considered earthquake (TMCE) method, and a newer approach known as the conditional mean spectrum (CMS) method. The TMCE method selects GMs using the risk-based maximum considered earthquake (MCER) spectrum as the target spectrum, while the CMS method uses the CMS that anchors the MCER at multiple conditioning periods. T

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Hu, Xiuyan, Zhipeng Zhao, Ruifu Zhang, Zhaohui Lu, Ming Guo, and Liang Guo. "Capacity Spectrum-Based Retrofitting Method and Quick Design for Viscously Damped Structures by Utilizing the Concept of Uniform Damping Ratio." Buildings 13, no. 7 (2023): 1812. http://dx.doi.org/10.3390/buildings13071812.

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Viscous dampers have proven to be effective in enhancing the seismic performance of existing structures. Despite this, there is still a need for rapid and simplified design methods and formulae for viscous dampers that can take into account the elastic–plastic performance of structures. This study introduces a retrofit design method for existing structures using viscous dampers, based on the concept of uniform damping ratio (UDR), with the aim of fully utilizing each damper. The UDR concept assumes that each damper in the structure provides the same UDR when subjected to seismic excitations of

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SHAMA, AYMAN A. "ROCKING OF LARGE BRIDGE CAISSONS DUE TO SEISMIC EXCITATION." Journal of Earthquake and Tsunami 01, no. 04 (2007): 329–45. http://dx.doi.org/10.1142/s1793431107000201.

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Caisson foundations are massive structures that respond to seismic loads in a primarily rocking mode. This paper presents a case study on an existing bridge caisson where the capacity spectrum approach was used to evaluate the performance for a specific seismic event. The deformation capacity curve was evaluated from nonlinear static pushover of a three dimensional finite element model of the caisson embedded in the surrounding soil. The model included interface elements to capture gapping, sliding, and rocking of the caisson during the analysis. The nonlinear behavior of the soil was represen

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Sheelavant, Kumaresh, and R. Sumathi. "Correlative Dynamic Mapping based Optimization (CDMO) for Optimal Allocation in Cognitive Radio Sensor Network." Revista Gestão Inovação e Tecnologias 11, no. 4 (2021): 3955–73. http://dx.doi.org/10.47059/revistageintec.v11i4.2421.

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The data communication in the sensor networking system with cognitive radio sensor network increases the speed of packet transmission by the optimal spectrum allocation among available channel. For a large size of network architecture, the routing system needs to manage the packet transmission in an efficient routing path with optimal allocation of channel to the sensor nodes. In these optimal network allocation and routing system, the methods need to be modeled based on the parameters of channel capacity and other routing properties. In this paper, a novel optimization algorithm was proposed

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Frank, Simone, Nisha Datta, Alicia Bilheimer, et al. "219 Engagement as a Spectrum: Co-Developing and Implementing a Training Series to Enhance Researcher Capacity for Engaging Community and Patient Partners." Journal of Clinical and Translational Science 8, s1 (2024): 67. http://dx.doi.org/10.1017/cts.2024.206.

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OBJECTIVES/GOALS: Community-based participatory research is a “gold standard” methodology, yet many researchers lack the experience or resources to implement this approach. To make engagement more accessible, we developed and implemented a 3-part training series highlighting engagement as a spectrum with many options to meaningfully engage partners. METHODS/STUDY POPULATION: Staff at UNC-Chapel Hill’s CTSA and Cancer Center collaborated with patient and community partners to co-develop training content, structure, and delivery. Sessions were free and open to the public and covered key componen

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Hassan, Mohamed S., Mahmoud H. Ismail, Mohamed El Tarhuni, and Fatema Aseeri. "On the Enabling of Efficient Coexistence of LTE With WiFi." International Journal of Interdisciplinary Telecommunications and Networking 12, no. 3 (2020): 44–56. http://dx.doi.org/10.4018/ijitn.2020070104.

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The recently proposed extension of the LTE operation to the unlicensed spectrum, known as LTE-Unlicensed (LTE-U), is not only expected to alleviate the congestion in the licensed band but is expected to result in an increase in the network capacity, as well. Unfortunately, such extension is challenged by a coexistence problem with wireless technologies operating in the unlicensed spectrum, especially Wi-Fi. Therefore, this article employs time series forecasting methods to enable efficient LTE coexistence with Wi-Fi. This is done by enabling the LTE-U Home eNodeB (HeNB) to avoid collisions wit

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Volkov, Boris B., and Veronica Hoyo. "460 Adaptive Capacity and Preparedness of CTSAs: The Environmental Scan Approach and Findings." Journal of Clinical and Translational Science 6, s1 (2022): 91–92. http://dx.doi.org/10.1017/cts.2022.270.

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OBJECTIVES/GOALS: Illuminate processes and findings of the Environmental Scan of Adaptive Capacity and Preparedness of CTSAs done by the CTSA Working Group. Share challenges, strategies, and lessons learned for CTSAs to build Capacity to address clinical and translational barriers while responding to emergencies. METHODS/STUDY POPULATION: An Environmental Scan approach for searching, collecting, analyzing and using information from diverse sources regarding CTSA hubs experiences during emergency as related to research implementation, translation, support, adaptation, and preparedness: - Triang

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Li, Zhong, and Hao Shao. "Finder-MCTS: A Cognitive Spectrum Allocation Based on Traveling State Priority and Scenario Simulation in IoV." Wireless Communications and Mobile Computing 2021 (November 8, 2021): 1–18. http://dx.doi.org/10.1155/2021/2270505.

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With the increasing number of intelligent connected vehicles, the problem of scarcity of communication resources has become increasingly obvious. It is a practical issue with important significance to explore a real-time and reliable dynamic spectrum allocation scheme for the vehicle users, while improving the utilization of the available spectrum. However, previous studies have problems such as local optimum, complex parameter setting, learning speed, and poor convergence. Thus, in this paper, we propose a cognitive spectrum allocation method based on traveling state priority and scenario sim

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Moskalov, Vitalii. "Effects of various xenogenic mesenchymal stem cell secretome fractions on the regenerative capacity of the liver in vitro." Bionatura 8, no. 3 (2023): 1–10. http://dx.doi.org/10.21931/rb/2023.08.03.90.

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Liver diseases cause many deaths worldwide and wreak havoc on the economy. The main hepatoprotectors are plant substances and peptides. Regenerative medicine based on mesenchymal stem cells (MSCs) can offer a new set of biologically active substances for liver regeneration, which are part of their secretome. The work applied the methods of cell isolation and cultivation, ultrafiltration for fractionation of secretome components, and organotypic culture model. The study’s results indicate an increase in the regenerative capacity of the liver under the impact of the components of the MSC secreto

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Melati, Felicia, Ratna Indriyanti, and Arlette Suzy Setiawan. "Effectiveness of Applied Behavior Analysis (ABA) with regard to tooth brushing in autistic children." Dental Journal (Majalah Kedokteran Gigi) 52, no. 3 (2019): 117. http://dx.doi.org/10.20473/j.djmkg.v52.i3.p117-121.

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Background: Children demonstrating autistic spectrum disorders tend to be uncooperative when receiving dental treatment. Actions as simple as brushing the teeth with a prophylactic brush can constitute complex processes for children with such conditions. Applied behavior analysis (ABA) can train children in new positive behavior and it is, therefore, anticipated that an ABA-based approach iscapable of influencing the behavior of individuals with autistic spectrum disorder. Purpose: This study aimed to assess the effectiveness of the ABA-based approach for autistic children during dental brushi

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Machalska, Ewa, Grzegorz Zajac, Monika Halat, Aleksandra J. Wierzba, Dorota Gryko, and Malgorzata Baranska. "Resonance Raman Optical Activity Spectroscopy in Probing Structural Changes Invisible to Circular Dichroism Spectroscopy: A Study on Truncated Vitamin B12 Derivatives." Molecules 25, no. 19 (2020): 4386. http://dx.doi.org/10.3390/molecules25194386.

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This work demonstrates resonance Raman optical activity (RROA) spectra of three truncated vitamin B12 derivatives modified within the nucleotide loop. Since truncated cobalamins possess sufficiently high rotational strength in the range of ROA excitation (532 nm), it was possible to record their spectra in the resonance condition. They showed several distinct spectral features allowing for the distinguishing of studied compounds, in contrast to other methods, i.e., UV-Vis absorption, electronic circular dichroism, and resonance Raman spectroscopy. The improved capacity of the RROA method is ba

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Gu, Guobin, Xin Sun, Benxiao Lou, et al. "A Study of Mixed Non-Motorized Traffic Flow Characteristics and Capacity Based on Multi-Source Video Data." Sensors 24, no. 21 (2024): 7045. http://dx.doi.org/10.3390/s24217045.

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Mixed non-motorized traffic is largely unaffected by motor vehicle congestion, offering high accessibility and convenience, and thus serving as a primary mode of “last-mile” transportation in urban areas. To advance stochastic capacity estimation methods and provide reliable assessments of non-motorized roadway capacity, this study proposes a stochastic capacity estimation model based on power spectral analysis. The model treats discrete traffic flow data as a time-series signal and employs a stochastic signal parameter model to fit stochastic traffic flow patterns. Initially, UAVs and video c

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Xiao, Juanjuan, Yufeng Xiao, Xinmin Ge, and Tianqi Zhou. "A Technique to Determine the Breakthrough Pressure of Shale Gas Reservoir by Low-Field Nuclear Magnetic Resonance." Energies 15, no. 19 (2022): 7223. http://dx.doi.org/10.3390/en15197223.

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The porous and low-permeability characteristics of a shale gas reservoir determine its high gas storage efficiency, which is manifested in the extremely high breakthrough pressure of shale. Therefore, the accurate calculation of breakthrough pressure is of great significance to the study of shale gas preservation conditions. Based on a systematic analysis of a low-field NMR experiment on marine shales of the Longmaxi Formation in the Sichuan Basin, a shale gas breakthrough pressure determination technique different from conventional methods is proposed. The conventional methods have low calcul

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Dou, Jian, Xuan Liu, Shuang Qie, Jiayi Li, and Chaoliang Wang. "Spectrum Allocation and User Scheduling Based on Combinatorial Multi-Armed Bandit for 5G Massive MIMO." Sensors 23, no. 17 (2023): 7512. http://dx.doi.org/10.3390/s23177512.

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As a key 5G technology, massive multiple-input multiple-output (MIMO) can effectively improve system capacity and reduce latency. This paper proposes a user scheduling and spectrum allocation method based on combinatorial multi-armed bandit (CMAB) for a massive MIMO system. Compared with traditional methods, the proposed CMAB-based method can avoid channel estimation for all users, significantly reduce pilot overhead, and improve spectral efficiency. Specifically, the proposed method is a two-stage method; in the first stage, we transform the user scheduling problem into a CMAB problem, with e

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Morfoulaki, Maria, Glykeria Myrovali, and Maria Chatziathanasiou. "Exploiting Marketing Methods for Increasing Participation and Engagement in Sustainable Mobility Planning." Sustainability 14, no. 8 (2022): 4820. http://dx.doi.org/10.3390/su14084820.

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Experience has shown that when a target group that benefits from or is affected by an intervention is included in the planning procedure from the beginning, underlying success factors are revealed and respected. Coming to sustainable mobility planning, an ideal participatory scheme (optimal synthesis of different perspectives) accompanying the sustainable mobility planning cycle would add to the interventions’ success. The current paper, based on the knowledge acquired within the e-smartec Interreg EUROPE project, is inspired by the wide spectrum of marketing techniques from the business secto

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