scholarly journals The impact of multiple concurrent factors on the length of the ultrasound pulmonary vertical artifacts as illustrated through the experimental and numerical analysis of simple models

2021 ◽  
Vol 150 (3) ◽  
pp. 2106-2115
Author(s):  
Marcello Demi
Keyword(s):  
Numerical Analysis ◽  
The Impact ◽  
Simple Models

MODELING THE IMPACT OF PARTIAL INFORMATION SHARING IN A THREE-ECHELON SUPPLY CHAIN

2013 ◽  
Vol 30 (05) ◽  
pp. 1350020 ◽  
Author(s):  
ZHUPING LIU ◽  
QIUHONG ZHAO ◽  
SHOUYANG WANG ◽  
JIANMING SHI
Keyword(s):  
Supply Chain ◽  
Numerical Analysis ◽  
Information Sharing ◽  
Partial Information ◽  
Autoregressive Coefficient ◽  
The Impact

This paper investigates the impact of partial information sharing in a three-echelon supply chain. Partial information sharing means that information sharing occurs only between the distributor and the retailer, but not between the distributor and the manufacturer. This paper contributes to the literature by summarizing the circumstances in which information sharing between the retailer and the distributor benefits the manufacturer. In addition, our study points out that such information sharing does not always bring benefits to the manufacturer and that in some cases the information sharing may harm the manufacturer. We explain the reasons why this can happen and give managerial intuition for our results. Using numerical analysis, we illustrate the impact of partial information sharing on the agents in the supply chain with the change of the autoregressive coefficient in the demand process.

scholarly journals Numerical Analysis of the Impact on Dissolved Oxygen by the Breakwater in Ofunato Bay

2014 ◽  
Vol 70 (2) ◽  
pp. I_421-I_425
Author(s):  
Ken FURUDOI ◽  
Shigeki SAKAI ◽  
Kazuo MURAKAMI ◽  
Yoshiyuki NAKAMURA ◽  
Ikuo ABE ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Dissolved Oxygen ◽  
The Impact

scholarly journals On the Impact of HOT Lane Tolling Strategies on Total Traffic Level

2012 ◽  
Vol 48 (3) ◽  
Author(s):  
Soheil Sibdari ◽  
Mansoureh Jeihani
Keyword(s):  
Numerical Analysis ◽  
Dynamic Pricing ◽  
User Equilibrium ◽  
Pricing Strategies ◽  
Peak Period ◽  
Dynamic Strategy ◽  
Traffic Level ◽  
The Right ◽  
The Impact ◽  
High Occupancy Toll

This paper shows how tolling (or pricing) strategies can be used to control the congestion levels of both untolled and high occupancy toll (HOT) lanes. Using a user-equilibrium method, the paper calculates the number of travelers on each route during the peak period and provides a numerical analysis that determines the distribution of travelers for different tolling strategies. It shows that with the right tolling strategy some travelers who initially plan to use the untolled lane during the peak period will change both their routes (i.e., select the HOT lane) and departure times (i.e., depart earlier or later). Using this result, the paper compares static and dynamic pricing strategies and shows that with a dynamic strategy a larger profit can be earned and congestion reduced in the untolled lane.

Numerical analysis of the impact of variable porosity on trailing-edge noise

2018 ◽  
Vol 167 ◽  
pp. 66-81 ◽  
Author(s):  
Seong Ryong Koh ◽  
Beckett Zhou ◽  
Matthias Meinke ◽  
Nicolas Gauger ◽  
Wolfgang Schröder
Keyword(s):  
Numerical Analysis ◽  
Trailing Edge ◽  
Trailing Edge Noise ◽  
Variable Porosity ◽  
The Impact

scholarly journals Impact of an Antiresonant Oxide Island on the Lasing of Lateral Modes in VCSELs

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2195
Author(s):  
Marta Więckowska ◽  
Robert P. Sarzała ◽  
Rafał Ledzion ◽  
Maciej Dems
Keyword(s):  
Numerical Analysis ◽  
Current Crowding ◽  
Crowding Effect ◽  
Factors Influencing ◽  
Mode Selectivity ◽  
Lateral Mode ◽  
Mode Discrimination ◽  
Lateral Modes ◽  
The Impact ◽  
Side Mode

Use of antiresonant structures is a proven, efficient method of improving lateral mode selectivity in VCSELs. In this paper, we analyze the impact of a low-refractive antiresonant oxide island buried in a top VCSEL mirror on the lasing conditions of lateral modes of different orders. By performing comprehensive thermal, electrical, and optical numerical analysis of the VCSEL device, we show the impact of the size and location of the oxide island on the current-crowding effect and compute threshold currents for various lateral modes. If the island is placed close to the cavity, the threshold shows strong oscillations, which for moderate island distances can be tuned to increase the side mode discrimination. We are therefore able to pinpoint the most important factors influencing mode discrimination and to identify oxide island parameters capable of providing single-lateral-mode emission.

scholarly journals Lossless WDM PON Photonic Integrated Receivers Including SOAs

2019 ◽  
Vol 9 (12) ◽  
pp. 2457 ◽  
Author(s):  
Goki ◽  
Imran ◽  
Porzi ◽  
Toccafondo ◽  
Fresi ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Wavelength Division Multiplexing ◽  
Flip Chip ◽  
Optical Network ◽  
Silicon On Insulator ◽  
Passive Optical Network ◽  
Case Scenario ◽  
Worst Case ◽  
The Impact ◽  
Wdm Transmission

The role of a semiconductor optical amplifier (SOA) for amplifying downstream traffic at optical network terminals (ONT) within a silicon-photonics integrated receiver in a high capacity passive optical network (PON) is investigated. The nearly traveling wave SOA effects are evaluated by considering fabrication and link loss constraints through numerical analysis and experimental validation. The impact of hybrid integration of a SOA chip on a silicon on insulator (SOI) photonic chip using the flip chip bonding technique on SOA design is evaluated through numerical analysis of a multi section cavity model. The performance of the proposed ONT receiver design employing twin parallel SOAs is evaluated experimentally on a 32 × 25 Gb/s OOK WDM transmission system considering cross gain modulation (XGM) and amplified spontaneous emission (ASE) constraints. The XGM impact is evaluated through 32 channel wavelength division multiplexing (WDM) transmission and a likely PON worst case scenario of high channel power difference (~10 dB) between adjacent channels. The impact of ASE is evaluated through the worst-case polarization condition, i.e., when all of the signal is coupled to only one. Successful transmission was achieved in both worst-case conditions with limited impact on performance. SOA results indicate that a maximum residual facet reflectivity of 4 × 10−4 for the chip-bonded device can lead to a power penalty below 2 dB in a polarization-diversity twin SOAs receiver.

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