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Journal articles on the topic 'Vnf modeling'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Marchetto, Guido, Riccardo Sisto, Matteo Virgilio, and Jaloliddin Yusupov. "A VNF modeling approach for verification purposes." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 4 (2019): 2627. http://dx.doi.org/10.11591/ijece.v9i4.pp2627-2636.

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<span lang="EN-US">Network Function Virtualization (NFV) architectures are emerging to increase networks flexibility. However, this renewed scenario poses new challenges, because virtualized networks, need to be carefully verified before being actually deployed in production environments in order to preserve network coherency (e.g., absence of forwarding loops, preservation of security on network traffic, etc.). Nowadays, model checking tools, SAT solvers, and Theorem Provers are available for formal verification of such properties in virtualized networks. Unfortunately, most of those ve

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Guido, Marchetto, Sisto Riccardo, Sisto Riccardo, and Yusupov Jalolliddin. "A VNF modeling approach for verification purposes." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 4 (2019): 2627–36. https://doi.org/10.11591/ijece.v9i4.pp2627-2636.

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Network Function Virtualization (NFV) architectures are emerging to increase networks flexibility. However, this renewed scenario poses new challenges, because virtualized networks, need to be carefully verified before being actually deployed in production environments in order to preserve network coherency (e.g., absence of forwarding loops, preservation of security on network traffic, etc.). Nowadays, model checking tools, SAT solvers, and Theorem Provers are available for formal verification of such properties in virtualized networks. Unfortunately, most of those verification tools accept i

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3

Vladislavić, Đani, Darko Huljenić, and Julije Ožegović. "Virtual Network Resource Optimization Model for Network Function Virtualization." Wireless Communications and Mobile Computing 2021 (August 17, 2021): 1–21. http://dx.doi.org/10.1155/2021/9928210.

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Network function virtualization (NFV) is a concept aimed at achieving telecom grade cloud ecosystem for new-generation networks focusing on capital and operational expenditure (CAPEX and OPEX) savings. This study introduces empirical throughput prediction model for the virtual network function (VNF) and network function virtualization infrastructure (NFVI) architectures based on Linux kernel. The model arises from the methodology for performance evaluation and modeling based on execution area (EA) distribution by CPU core pinning. EA is defined as a software execution unit that can run isolate

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Zeng, Zhihao, Zixiang Xia, Xiaoning Zhang, and Yexiao He. "SFC Design and VNF Placement Based on Traffic Volume Scaling and VNF Dependency in 5G Networks." Computer Modeling in Engineering & Sciences 134, no. 3 (2023): 1791–814. http://dx.doi.org/10.32604/cmes.2022.021648.

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Rafiq, Adeel, Asif Mehmood, Talha Ahmed Khan, Khizar Abbas, Muhammad Afaq, and Wang-Cheol Song. "Intent-Based End-to-End Network Service Orchestration System for Multi-Platforms." Sustainability 12, no. 7 (2020): 2782. http://dx.doi.org/10.3390/su12072782.

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On-demand service is the main feature of the 5G network, and Network Function Virtualization (NFV) provides it by virtualizing the existing 5G network infrastructure. NFV crafts various virtual networks on a shared physical network, but one of the core challenges in future 5G networks is to automate the modeling of Virtualized Network Functions (VNFs) and end-to-end Network Service (NS) orchestration with less human interaction. Traditionally, the descriptor of VNF and NS is created manually, which requires expert-level skills. This manual approach has a big threat of human error, which can be

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Ye, Qiang, Weihua Zhuang, Xu Li, and Jaya Rao. "End-to-End Delay Modeling for Embedded VNF Chains in 5G Core Networks." IEEE Internet of Things Journal 6, no. 1 (2019): 692–704. http://dx.doi.org/10.1109/jiot.2018.2853708.

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Mario, Baldi, and Sapio Amedeo. "Network Function Modeling and Performance Estimation." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3021–37. https://doi.org/10.11591/ijece.v8i5.pp3021-3037.

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This work introduces a methodology for the modelization of network functions focused on the identification of recurring execution patterns as basic building blocks and aimed at providing a platform independent representation. By mapping each modeling building block on specific hardware, the performance of the network function can be estimated in terms of maximum throughput that the network function can achieve on the specific execution platform. The approach is such that once the basic modeling building blocks have been mapped, the estimate can be computed automatically for any modeled network

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Elvidge, Christopher D., Mikhail Zhizhin, Feng Chi Hsu, Tamara Sparks, and Tilottama Ghosh. "Subpixel Analysis of Primary and Secondary Infrared Emitters with Nighttime VIIRS Data." Fire 4, no. 4 (2021): 83. http://dx.doi.org/10.3390/fire4040083.

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Biomass burning is a coupled exothermic/endothermic system that transfers carbon in several forms to the atmosphere, ultimately leaving mineral ash. The exothermic phases include flaming and smoldering, which produce the heat that drives the endothermic processes. The endothermic components include pre-heating and pyrolysis, which produce the fuel consumed by flaming and smoldering. These components can be broadly distinguished from each other based on temperature. For several years, we have researched the subpixel analysis of two temperature phases present in fire pixels detected in nighttime

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Baldi, Mario, and Amedeo Sapio. "Network Function Modeling and Performance Estimation." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3021. http://dx.doi.org/10.11591/ijece.v8i5.pp3021-3037.

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<p>This work introduces a methodology for the modelization of network functions focused on the identification of recurring execution patterns as basic building blocks and aimed at providing a platform independent representation. By mapping each modeling building block on specific hardware, the performance of the network function can be estimated in termsof maximum throughput that the network function can achieve on the specific execution platform. The approach is such that once the basic modeling building blocks have been mapped, the estimate can be computed automatically for any modeled

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10

Zhu, Haochen, Bo Hu, and Fengrui Yang. "Removal of Sulfadiazine by Polyamide Nanofiltration Membranes: Measurement, Modeling, and Mechanisms." Membranes 11, no. 2 (2021): 104. http://dx.doi.org/10.3390/membranes11020104.

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In this study, a complete steric, electrostatic, and dielectric mass transfer model is applied to investigate the separation mechanism of typical antibiotic sulfadiazine by NF90, NF270, VNF-8040 and TMN20H-400 nanofiltration membranes. FTIR and XPS analysis clearly indicate that the membranes we used possess skin layers containing both amine and carboxylic acid groups that can be distributed in an inhomogeneous fashion, leading to a bipolar fixed charge distribution. We compare the theoretical and experimental rejection rate of the sulfadiazine as a function of the pressure difference across t

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11

Wei, Yifei, Yuning Jia, Jun Li, and Xiaojun Wang. "RESEARCH ON 5G NETWORK RESOURCE ORCHESTRATION ALGORITHM BASED ON NETWORK VIRTUALIZATION TECHNOLOGY." Latin American Applied Research - An international journal 52, no. 4 (2022): 347–52. http://dx.doi.org/10.52292/j.laar.2022.970.

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With the advancement of wireless network technology to the next generation, network function virtualization (NFV) brings the advantages of centralized scheduling of virtual wireless resources and the ability to orchestrate virtual network functions. This makes it possible to dynamically deploy and manage service function chains (SFCs) in virtualized wireless networks according to changes in network load. Through the network function virtualization technology, the DU/CU separation architecture under 5G-NG-RAN is considered. Aiming at the resource orchestration problem of the 5G access network v

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Elagin, Vasily S., Alexander V. Bogachev, and Ilya A. Belozertsev. "Modeling the estimation of end-to-end packet latency for a chain of NFV nodes in 5G networks." T-Comm 16, no. 3 (2022): 23–30. http://dx.doi.org/10.36724/2072-8735-2022-16-3-23-30.

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It is expected that future communication networks will provide configurable delay-sensitive types of services (for example, streaming video, machine interaction). To support a variety of applications and use cases of servers providing various functions, you can use network function virtualization (NFV), which will be able to provide flexible implementation and placement of configuration of the necessary network functions. This article analyzes the end-to-end packet latency (E2E) for multiple traffic flows passing through the chain of embedded virtual network functions (VNF) in fifth-generation

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13

Asgarian, Mina, Ghasem Mirjalily, and Zhi-Quan Luo. "Trade-Off Between Efficiency and Complexity in Multi-Stage Embedding of Multicast VNF Service Chains." IEEE Communications Letters 26, no. 2 (2022): 429–33. http://dx.doi.org/10.1109/lcomm.2021.3132134.

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14

Dang-Quang, Nhat-Minh, and Myungsik Yoo. "Optimized placement of symmetrical service function chain in network function virtualization." Computer Science and Information Systems, no. 00 (2022): 6. http://dx.doi.org/10.2298/csis210920006d.

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Network function virtualization (NFV) is one of the key technology enablers for actualizing 5G networks. With NFV, virtual network functions (VNFs) are linked together as a service function chain (SFC), which provides network functionality for the customer on demand. However, how to efficiently find a suitable placement for VNFs regarding the given objectives is an extremely difficult issue. The existing approaches assume that the SFC has a simple and asymmetrical pattern that is unsuitable to modeling a real system. We address this limitation by studying a VNF placement optimization problem w

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Tam, Prohim, Sa Math, and Seokhoon Kim. "Priority-Aware Resource Management for Adaptive Service Function Chaining in Real-Time Intelligent IoT Services." Electronics 11, no. 19 (2022): 2976. http://dx.doi.org/10.3390/electronics11192976.

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The growth of the Internet of Things (IoT) in various mission-critical applications generates service heterogeneity with different priority labels. A set of virtual network function (VNF) orders represents service function chaining (SFC) for a particular service to robustly execute in a network function virtualization (NFV)-enabled environment. In IoT networks, the configuration of adaptive SFC has emerged to ensure optimality and elasticity of resource expenditure. In this paper, priority-aware resource management for adaptive SFC is provided by modeling the configuration of real-time IoT ser

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16

Van Rossem, Steven, Wouter Tavernier, Didier Colle, Mario Pickavet, and Piet Demeester. "VNF Performance modelling: From stand-alone to chained topologies." Computer Networks 181 (November 2020): 107428. http://dx.doi.org/10.1016/j.comnet.2020.107428.

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17

Kaikkonen, P., S. P. Sharma, and S. Mittal. "3D modeling and inversion of VLF and VLF-R electromagnetic data." GEOPHYSICS 77, no. 4 (2012): WB219—WB231. http://dx.doi.org/10.1190/geo2011-0360.1.

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Three-dimensional linearized nonlinear electromagnetic inversion is developed for revealing the subsurface conductivity structure using isolated very low frequency (VLF) and VLF-resistivity anomalies due to conductors that may be arbitrarily directed towards the measuring profiles and the VLF transmitter. We described the 3D model using a set of variables in terms of geometric and physical parameters. These model parameters were then optimized (parametric inversion) to obtain their best estimates to fit the observations. Two VLF transmitters, i.e., the [Formula: see text], [Formula: see text]

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18

Darsono, Muhammad, Ahmad Ruri Wijaya, and Rommy Hartono. "Modeling and Simulation of Dual-band Yagi Antennas for Voice Communication on Microsatellite." JURNAL INFOTEL 11, no. 3 (2019): 68–72. http://dx.doi.org/10.20895/infotel.v11i3.435.

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The design of the dual-band Yagi antenna was developed to support voice communication through voice repeaters on microsatellites in the UHF-VHV frequency from ground stations. The Yagi antenna is a type of half lambda dipole antenna that makes it easy to obtain direction and increase gain. The antenna is designed using the method of moment through a simulation with the CST microwave studio software application. The design used as an antenna element material is a type of copper pipe cylinder. The results of the Yagi antenna design in the VHF frequency consist of one driven element, one reflecto

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19

Poikonen, Ari, and Ilkka Suppala. "On modeling airborne very low‐frequency measurements." GEOPHYSICS 54, no. 12 (1989): 1596–606. http://dx.doi.org/10.1190/1.1442627.

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Numerical models employed in ground VLF modeling use a normally incident (homogeneous) plane wave as a primary field. We show that these models are not directly applicable to modeling the impedance and wavetilt in the air, quantities needed in the interpretation of airborne VLF resistivity measurements. Instead, the primary field must be replaced by an inhomogeneous plane wave incident on the ground at an angle close to 90 degrees in order to provide the correct behavior of the apparent resistivities in the air. VLF magnetic polarization parameters, however, can be modeled in the air using the

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20

Mitsis, Georgios D., Rong Zhang, Benjamin D. Levine, and Vasilis Z. Marmarelis. "Cerebral hemodynamics during orthostatic stress assessed by nonlinear modeling." Journal of Applied Physiology 101, no. 1 (2006): 354–66. http://dx.doi.org/10.1152/japplphysiol.00548.2005.

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The effects of orthostatic stress, induced by lower body negative pressure (LBNP), on cerebral hemodynamics were examined in a nonlinear context. Spontaneous fluctuations of beat-to-beat mean arterial blood pressure (MABP) in the finger, mean cerebral blood flow velocity (MCBFV) in the middle cerebral artery, as well as breath-by-breath end-tidal CO2 concentration (PetCO2) were measured continuously in 10 healthy subjects under resting conditions and during graded LBNP to presyncope. A two-input nonlinear Laguerre-Volterra network model was employed to study the dynamic effects of MABP and Pet

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21

Hien, Dinh Sy. "Development of Quantum Simulator for Emerging Nanoelectronics Devices." ISRN Nanotechnology 2012 (August 28, 2012): 1–10. http://dx.doi.org/10.5402/2012/617214.

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We have developed NEMO-VN2, a new quantum device modeling tool that simulates a wide variety of quantum devices including the resonant tunneling diode, the single electron transistor, the molecular field effect transistor, the carbon nanotube field effect transistor, and the spin field effect transistor. In this work the nonequilibrium Green’s function is used to perform a comprehensive study of the emerging nanoelectronics devices. The program has been written by using graphic user interface of Matlab. NEMO-VN2 uses Matlab to solve Schrodinger equation to get current-voltage characteristics o

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22

Ramesh Babu, V., Subhash Ram, and N. Sundararajan. "Modeling and inversion of magnetic and VLF-EM data with an application to basement fractures: A case study from Raigarh, India." GEOPHYSICS 72, no. 5 (2007): B133—B140. http://dx.doi.org/10.1190/1.2759921.

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We present modeling of magnetic and very low frequency electromagnetic (VLF-EM) data to map the spatial distribution of basement fractures where uranium is reported in Sambalpur granitoids in the Raigarh district, Chhattisgarh, India. Radioactivity in the basement fractures is attributed to brannerite, [Formula: see text] complex, and uranium adsorbed on ferruginous matter. The amplitude of the 3D analytical signal of the observed magnetic data indicates the trend of fracture zones. Further, the application of Euler 3D deconvolution to magnetic data provides the spatial locations and depth of

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23

Roy, Jean. "On: “Effect of temporal and spatial variations of the primary signal on VLF total‐field surveys” by M. A. Vallee, M. Chouteau, and G. J. Palacky (January 1992 GEOPHYSICS, p. 97‐105)." GEOPHYSICS 58, no. 5 (1993): 756. http://dx.doi.org/10.1190/1.1443461.

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Vallee et al. (1992) remark on the sensitivity of airborne ratio measuring VLF instruments to platform attitude stability. The authors also remind the users of VLF total field amplitude data, as produced by instruments such as the Herz TOTEM, of two problems associated with this type of data: spatial and temporal fluctuations of the VLF primary field. They recommend the use of a dense network of VLF monitoring stations and numerical modeling of field propagation to cope with these problems. These two recommendations are briefly discussed here and one alternative recommendation is made.

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Beamish, David. "Three-dimensional modelling of VLF data." Journal of Applied Geophysics 39, no. 2 (1998): 63–76. http://dx.doi.org/10.1016/s0926-9851(98)00012-3.

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25

Palit, S., T. Basak, S. K. Mondal, S. Pal, and S. K. Chakrabarti. "Modeling of the Very Low Frequency (VLF) radio wave signal profile due to solar flares using the GEANT4 Monte Carlo simulation coupled with ionospheric chemistry." Atmospheric Chemistry and Physics Discussions 13, no. 3 (2013): 6007–33. http://dx.doi.org/10.5194/acpd-13-6007-2013.

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Abstract. X-ray photons emitted during solar flares cause ionization in the lower ionosphere (~ 60 to 100 km) in excess of what is expected from a quiet sun. Very Low Frequency (VLF) radio wave signals reflected from the D region are affected by this excess ionization. In this paper, we reproduce the deviation in VLF signal strength during solar flares by numerical modeling. We use GEANT4 Monte Carlo simulation code to compute the rate of ionization due to a M-class and a X-class flare. The output of the simulation is then used in a simplified ionospheric chemistry model to calculate the time

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Palit, S., T. Basak, S. K. Mondal, S. Pal, and S. K. Chakrabarti. "Modeling of very low frequency (VLF) radio wave signal profile due to solar flares using the GEANT4 Monte Carlo simulation coupled with ionospheric chemistry." Atmospheric Chemistry and Physics 13, no. 18 (2013): 9159–68. http://dx.doi.org/10.5194/acp-13-9159-2013.

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Abstract. X-ray photons emitted during solar flares cause ionization in the lower ionosphere (~60 to 100 km) in excess of what is expected to occur due to a quiet sun. Very low frequency (VLF) radio wave signals reflected from the D-region of the ionosphere are affected by this excess ionization. In this paper, we reproduce the deviation in VLF signal strength during solar flares by numerical modeling. We use GEANT4 Monte Carlo simulation code to compute the rate of ionization due to a M-class flare and a X-class flare. The output of the simulation is then used in a simplified ionospheric chem

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27

Singh, S. B., K. Patel, R. P. Patel, A. K. Singh, and R. P. Singh. "Modeling of VHF scintillation observed at low latitude." Journal of Physics: Conference Series 208 (February 1, 2010): 012065. http://dx.doi.org/10.1088/1742-6596/208/1/012065.

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28

Zoghzoghy, F. G., M. B. Cohen, R. K. Said, N. G. Lehtinen, and U. S. Inan. "Shipborne LF-VLF oceanic lightning observations and modeling." Journal of Geophysical Research: Atmospheres 120, no. 20 (2015): 10,890–10,902. http://dx.doi.org/10.1002/2015jd023226.

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29

Bronk, Krzysztof, Patryk Koncicki, Adam Lipka, Rafał Niski, and Błażej Wereszko. "Radio Channel Modelling for VHF System Operating in the Offshore Wind Farms Propagation Environment." Sensors 23, no. 17 (2023): 7593. http://dx.doi.org/10.3390/s23177593.

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This article discusses several aspects related to the modeling of the radio channel in the wind farm propagation environment. The first part of the article is filled with the analysis of the ITU-R BT.1893-1 model, which—as will be shown—is also applicable to systems operating in the VHF and UHF bands. The conducted measurement campaign makes it possible to model a radio channel for VHF operating systems in the wind farm propagation environment. Thanks to the obtained results, the authors propose the VHF radio channel model for that environment. Using the software implementation of this model,

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30

Liu, Jicheng, Curtis E. Woodcock, Rae A. Melloh, Robert E. Davis, Ceretha McKenzie, and Thomas H. Painter. "Modeling the View Angle Dependence of Gap Fractions in Forest Canopies: Implications for Mapping Fractional Snow Cover Using Optical Remote Sensing." Journal of Hydrometeorology 9, no. 5 (2008): 1005–19. http://dx.doi.org/10.1175/2008jhm866.1.

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Abstract Forest canopies influence the proportion of the land surface that is visible from above, or the viewable gap fraction (VGF). The VGF limits the amount of information available in satellite data about the land surface, such as snow cover in forests. Efforts to recover fractional snow cover from the spectral mixture analysis model Moderate Resolution Imaging Spectroradiometer (MODIS) snow-covered area and grain size (MODSCAG) indicate the importance of view angle effects in forested landscapes. The VGF can be estimated using both hemispherical photos and forest canopy models. For a set

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31

Agrawal, Vijay K. "Modelling of the Antibacterial Activity of Some Benzimidazole Derivatives." Advances in Clinical Toxicology 8, no. 3 (2023): 1–9. http://dx.doi.org/10.23880/act-16000276.

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In this study, an attempt has been made to obtain the most significant QSAR model for modeling the logMIC activity of the benzimidazole derivatives as synthesized and reported by Seydal. For this purpose, some topological descriptors have been calculated using mol files created through Chemsketch software. The Dragon software has been used for the calculation of a pool of descriptors. Then stepwise regression analysis was done which resulted in statistically significant models. A twoparametric model has been found to be the best with R2 equal to 0.9487. The R2cv for the model comes out to be 0

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32

Røge, Rasmus E., Kristoffer H. Madsen, Mikkel N. Schmidt, and Morten Mørup. "Infinite von Mises–Fisher Mixture Modeling of Whole Brain fMRI Data." Neural Computation 29, no. 10 (2017): 2712–41. http://dx.doi.org/10.1162/neco_a_01000.

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Cluster analysis of functional magnetic resonance imaging (fMRI) data is often performed using gaussian mixture models, but when the time series are standardized such that the data reside on a hypersphere, this modeling assumption is questionable. The consequences of ignoring the underlying spherical manifold are rarely analyzed, in part due to the computational challenges imposed by directional statistics. In this letter, we discuss a Bayesian von Mises–Fisher (vMF) mixture model for data on the unit hypersphere and present an efficient inference procedure based on collapsed Markov chain Mont

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Lenshin, A. V., V. N. Tikhomirov, E. V. Shatalov, M. P. Savchenko, and N. M. Tikhomirov. "FREQUENCY SYNTHESIZERS MODERNIZATION OF VHF RADIO COMMUNICATION." T-Comm 16, no. 9 (2022): 20–27. http://dx.doi.org/10.36724/2072-8735-2022-16-9-20-27.

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Trends and prospects for the development of modern systems and complexes of radio communication, features of the use of frequency synthesizers based on the pulse-phase-locked loop in modern radio communications are analyzed. The results of the MF modernization on an integrated circuit HMC704 for transceivers of VHF radio stations are presented. The modeling of the upgraded midrange main units was carried out in the TI PLLatinumSim program. The LPF elements values and power spectral density of the output MF signal phase noise on LMX2594 IC are calculated. Due to the possibility of using a high

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Stanley, Bradford J., Elana S. Ehrlich, Leslie Short, et al. "Structural Insight into the Human Immunodeficiency Virus Vif SOCS Box and Its Role in Human E3 Ubiquitin Ligase Assembly." Journal of Virology 82, no. 17 (2008): 8656–63. http://dx.doi.org/10.1128/jvi.00767-08.

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ABSTRACT Human immunodeficiency virus (HIV) virion infectivity factor (Vif) causes the proteasome-mediated destruction of human antiviral protein APOBEC3G by tethering it to a cellular E3 ubiquitin ligase composed of ElonginB, ElonginC, Cullin5, and Rbx2. It has been proposed that HIV Vif hijacks the E3 ligase through two regions within its C-terminal domain: a BC box region that interacts with ElonginC and a novel zinc finger motif that interacts with Cullin5. We have determined the crystal structure of the HIV Vif BC box in complex with human ElonginB and ElonginC. This complex presents dire

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MAHTO, Prabhat R., and Anil C. MAHATO. "Dynamic Modelling and Analysis of a new Design Variable Inertia Flywheel for Diesel Engine using Bond Graph Technique." Mechanics 30, no. 6 (2024): 514–22. https://doi.org/10.5755/j02.mech.35855.

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The work proposed a new methodology to obtain variable inertia that reduces the speed fluctuations of the diesel engine during sudden load variations in terms of a variable inertia flywheel (VIF). In the proposed VIF, the inertia variation technique is based on the slider mass movement supported by the springs. The sliders of the VIF travel outward or inward according to the speed increase or decrease of the diesel engine, and hence, it produces variable inertia. It helps to reduce sudden speed fluctuations by adjusting the inertia before adjusting the fuel supply to the diesel engine. A dynam

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Dwinanda, Aldi Rivaldi, Bambang Setia Nugroho, and Aloysius Adya Pramudita. "Modeling of Cavities Detection in The Tree Stemsection Using Radar Vector Network Analyzer (VNA) Elaborating Radon Transform." Journal of Measurements, Electronics, Communications, and Systems 9, no. 1 (2022): 29. http://dx.doi.org/10.25124/jmecs.v9i1.5370.

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Trees are one of the most useful plants for life on earth. However, trees can be harmful due to cavities in the stem sections. Rapid detection is needed to prevent several losses that may arise due to fallen trees. This research identified a hollow and non-hollow tree stem section of flamboyant tree with a sub-surface detection radar system. The sub surface detection radar system was modeled using a Vector Network Analyzer (VNA) connected to a Vivaldi antenna. VNA emitted electromagnetic waves to the tree stem section and subsequently propagated and penetrated hollow tree stem section. The pro

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Guli, Guli, Heri Sapari Kahpi, Cecep Warman, and Fathurrohman Fathurrohman. "Peran Karakteristik Kepemimpinan dan Budaya Organisasi dalam Peningkatan Kinerja Karyawan di Mediasi oleh Variabel Motivasi." JIIP - Jurnal Ilmiah Ilmu Pendidikan 4, no. 4 (2021): 237–47. http://dx.doi.org/10.54371/jiip.v4i4.262.

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Tujuan dari penelitian ini untuk mengujiperan motivasi dalam memediasi pengaruh karakteristik pemimpin dan budaya organisasi terhadap kinerja karyawan dengan menggunakan Structural Equation Modeling. Sampel yang diambil adalah 100 karyawan dengan menggunakan purposive sampling didasarkan pada judgment sampling. Hasil penelitian menunjukkan bahwa hasil efek tidak langsung karakteristik pemimpin terhadap kinerja melalui motivasi artinya positif dan signifikan signifikan. Budaya organisasi terhadap kinerja melalui motivasi berarti signifikan. Pengaruh total (total effect) karakteristik pemimpin t

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Koner, S., Sumit, R. Shukla, S. K. Majumder, and S. Satapathy. "FEM modelling of magnetoelectric coupling in (2-2)LSMO/ P(VDF-TrFE) polymer composite." IOP Conference Series: Materials Science and Engineering 1248, no. 1 (2022): 012079. http://dx.doi.org/10.1088/1757-899x/1248/1/012079.

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Abstract Strain mediated magnetoelectric (ME) coupling effect has been investigated in bilayer structure of LSMO/P (VDF-TrFE) nanocomposite in the transverse ME mode. In the transverse mode, Finite Element Method (FEM) based small signal analysis has been performed by the COMSOL Multiphysics 6.0 software. La0.7Sr0.3MnO3(LSMO)/P (VDF-TrFE) nanocomposite (2-2) has been prepared by gluing LSMO pellet with P(VDF-TrFE) polymer film. This bilayer structure shows multiferroic property at room temperature. Simulated FEM modelverifies the magneto-strictive property of LSMO layer and explained the exper

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Gui, Chengcheng, Xuguang Chen, Khadija Sheikh, et al. "Radiomic modeling to predict risk of vertebral compression fracture after stereotactic body radiation therapy for spinal metastases." Journal of Neurosurgery: Spine 36, no. 2 (2022): 294–302. http://dx.doi.org/10.3171/2021.3.spine201534.

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OBJECTIVE In the treatment of spinal metastases with stereotactic body radiation therapy (SBRT), vertebral compression fracture (VCF) is a common and potentially morbid complication. Better methods to identify patients at high risk of radiation-induced VCF are needed to evaluate prophylactic measures. Radiomic features from pretreatment imaging may be employed to more accurately predict VCF. The objective of this study was to develop and evaluate a machine learning model based on clinical characteristics and radiomic features from pretreatment imaging to predict the risk of VCF after SBRT for

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You, Jun, Xian-rong Wan, Zi-ping Gong, Feng Cheng, and Heng-yu Ke. "Echo Modeling and Detection Performance of Wideband VHF Radar." Journal of Electronics & Information Technology 35, no. 12 (2014): 2795–801. http://dx.doi.org/10.3724/sp.j.1146.2013.00369.

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Rodger, Craig J., and David Nunn. "VLF scattering from red sprites: Application of numerical modeling." Radio Science 34, no. 4 (1999): 923–32. http://dx.doi.org/10.1029/1999rs900040.

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Rodger, Craig J., Mark A. Clilverd, and Neil R. Thomson. "Modeling of subionospheric VLF signal perturbations associated with earthquakes." Radio Science 34, no. 5 (1999): 1177–85. http://dx.doi.org/10.1029/1999rs900061.

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Lehtinen, Nikolai G., and Umran S. Inan. "Full-wave modeling of transionospheric propagation of VLF waves." Geophysical Research Letters 36, no. 3 (2009): n/a. http://dx.doi.org/10.1029/2008gl036535.

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Aloulou, Wala, Hajer Aloulou, Afef Attia, Sudip Chakraborty, and Raja Ben Amar. "Treatment of Tuna Cooking Juice via Ceramic Ultrafiltration Membrane: Optimization Using Response Surface Methodology." Membranes 12, no. 8 (2022): 813. http://dx.doi.org/10.3390/membranes12080813.

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In the present work, optimized ultrafiltration conditions, using a ceramic multi tubular titania membrane (150 KDa), were investigated for the treatment of tuna cooking juice, for water reuse in the industrial process. The interactive effects of the volume concentrating factor (VCF) (1.03–4.25), feed temperature (T) (20–60 °C), and applied transmembrane pressure (ΔP) (2–5 bar) on protein removal (R protein) and permeate flux (J) were determined. A Box–Behnken experimental design (BBD) with the response surface methodology (RSM) was used for statistical analysis, modeling, and optimization of t

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Zuckerman, Neil, and Noam Lior. "Impingement Heat Transfer: Correlations and Numerical Modeling." Journal of Heat Transfer 127, no. 5 (2005): 544–52. http://dx.doi.org/10.1115/1.1861921.

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Uses of impinging jet devices for heat transfer are described, with a focus on cooling applications within turbine systems. Numerical simulation techniques and results are described, and the relative strengths and drawbacks of the k-ε,k-ω, Reynolds stress model, algebraic stress models, shear stress transport, and v2f turbulence models for impinging jet flow and heat transfer are compared. Select model equations are provided as well as quantitative assessments of model errors and judgments of model suitability.

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Nakashima, Masaaki, Hirotaka Ode, Takashi Kawamura, et al. "Structural Insights into HIV-1 Vif-APOBEC3F Interaction." Journal of Virology 90, no. 2 (2015): 1034–47. http://dx.doi.org/10.1128/jvi.02369-15.

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ABSTRACTThe HIV-1 Vif protein inactivates the cellular antiviral cytidine deaminase APOBEC3F (A3F) in virus-infected cells by specifically targeting it for proteasomal degradation. Several studies identified Vif sequence motifs involved in A3F interaction, whereas a Vif-binding A3F interface was proposed based on our analysis of highly similar APOBEC3C (A3C). However, the structural mechanism of specific Vif-A3F recognition is still poorly understood. Here we report structural features of interaction interfaces for both HIV-1 Vif and A3F molecules. Alanine-scanning analysis of Vif revealed tha

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Gai, Yanxin, Sizhu Duan, Shiqi Wang та ін. "Design of Vif-Derived Peptide Inhibitors with Anti-HIV-1 Activity by Interrupting Vif-CBFβ Interaction". Viruses 16, № 4 (2024): 490. http://dx.doi.org/10.3390/v16040490.

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One of the major functions of the accessory protein Vif of human immunodeficiency virus type 1 (HIV-1) is to induce the degradation of APOBEC3 (A3) family proteins by recruiting a Cullin5-ElonginB/C-CBFβ E3 ubiquitin ligase complex to facilitate viral replication. Therefore, the interactions between Vif and the E3 complex proteins are promising targets for the development of novel anti-HIV-1 drugs. Here, peptides are designed for the Vif-CBFβ interaction based on the sequences of Vif mutants with higher affinity for CBFβ screened by a yeast surface display platform. We identified two peptides,

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Slingsby, P. L. "Modelling tropospheric ducting effects on VHF/UHF propagation." IEEE Transactions on Broadcasting 37, no. 2 (1991): 25–34. http://dx.doi.org/10.1109/11.86959.

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Kim, Hoyoung, and Vijay Harid. "Numerical Modeling of Nondestructive Testing of Various Conductive Objects inside Metal Enclosures Using ELF/VLF Magnetic Fields." Applied Sciences 11, no. 8 (2021): 3665. http://dx.doi.org/10.3390/app11083665.

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Nondestructive evaluation of various conductive objects through metal enclosures is investigated by using ELF/VLF magnetic induction fields in detailed simulations. ELF/VLF magnetic fields (<30 kHz) have a unique ability to penetrate highly conductive or permeable shields. Using a magnetic dipole source antenna, objects hidden inside a metal enclosure are imaged via examining distortions to the field outside the enclosure. The field distortion is parametrically studied by varying the size, conductivity, and permeability of the hidden objects. Furthermore, the importance of the conductivity

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Pan, Yuyan, Jifu Guo, and Yanyan Chen. "Calibration of Dynamic Volume-Delay Functions: A Rolling Horizon-Based Parsimonious Modeling Perspective." Transportation Research Record: Journal of the Transportation Research Board 2676, no. 2 (2021): 606–20. http://dx.doi.org/10.1177/03611981211044727.

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Volume-delay functions (VDF) are the critical building block in static traffic assignment and general demand-supply analysis. This paper aims to provide a rolling horizon-based modeling framework to establish and further calibrate dynamic VDF (DVDF) for a corridor. The development and application of classic VDF in recent traffic planning studies are first reviewed. Analytical formulas based on a rolling horizon framework are then developed to redefine critical elements in the Bureau of Public Roads (BPR) function to capture the time-dependent volume–delay relationship. Time-dependent average d

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