Results 11 to 20 of about 5,017,200 (165)

Cognition and Cooperation in Interfered Multiple Access Channels

Entropy, 2017
In this work, we investigate a three-user cognitive communication network where a primary two-user multiple access channel suffers interference from a secondary point-to-point channel, sharing the same medium. While the point-to-point channel transmitter—
Jonathan Shimonovich, Anelia Somekh-Baruch, Shlomo Shamai (Shitz)   +2 more
doaj   +1 more source

Calculation of bend-scale sediment balance in meandering rivers of Yellow River source based on UAV aerial survey

Shui kexue jinzhan, 2020
Erosion-deposition changes of meandering channels are a dynamic equilibrium process in the long-term time scale. The part of sediment load transport is roughly equal the difference between bank erosion in concave bank and point bar deposition in convex ...
Zhiwei LI, Tao TANG
doaj   +1 more source

THE STUDY OF THE RESERVOIR INTER-ARCHITECTURE STRUCTURE AND REMAINING OIL IN THE EASTERN PART OF SABEI II DISTRICT

Rudarsko-geološko-naftni Zbornik, 2019
In the Daqing oilfield, Heilongjiang Province, China, in the eastern part of the Sabei II District is a fi ne potential-tapping demonstration area with a long development time and complex history of well conditions.
Huabin Wei, Huanlai Zhu, Hengshuang Li, Shangming Shi, Senlin Gan, Zhiwei Zhai   +5 more
doaj   +1 more source

Driving mechanism of Sanyiqiao point bar and shoal evolution in fluctuation segment of tidal current limit in lower reaches of Yangtze River

Shui kexue jinzhan, 2020
A strong correlation exists between the evolution of the point bar and shoal in the fluctuation segment of the tidal current limit in the lower reaches of the Yangtze River, with simultaneous influences from the hydrodynamic force of runoff and tidal ...
Yunping YANG, Jinhai ZHENG, Mingjin ZHANG, Jianjun WANG, Lingling ZHU   +4 more
doaj   +1 more source

Geometric and Geostatistical Modeling of Point Bars

, 2023
AbstractPoint bar reservoir geology is frequently encountered in oil and gas developments worldwide. Furthermore, point bar geology is encountered in many sites being considered for large scale CO2 injection for sequestration. A comprehensive modeling method that adequately preserves point bar internal architecture and its associated heterogeneities is
Ismael Dawuda, Sanjay Srinivasan
openaire   +1 more source

Reservoir Architecture in Tide-Dominated Estuary: A Case Study of McMurray Formation Oil Sand Reservoir in the Athabasca Block, Canada

Frontiers in Earth Science, 2022
This paper presents a detailed description of the sedimentary characteristics and architecture model of the tidal-dominated estuary reservoir in the Lower Cretaceous McMurray formation.
Weixue Zhang, Weixue Zhang, Jixin Huang, Wenjie Feng, Wenjie Feng, Lixin Wang, Lixin Wang, Haojie Shang, Haojie Shang, Yanshu Yin, Yanshu Yin   +10 more
doaj   +1 more source

The Advantages of Using Sequential Stochastic Simulations when Mapping Small-Scale Heterogeneities of the Groundwater Level

Journal of Environmental Geography, 2013
In the environmental risk assessment of oil fields, a detailed knowledge of the heterogeneity of groundwater surfaces is absolutely indispensable. Based on theoretical considerations, in order to analyse small-scale heterogeneities, we decided that the ...
Mucsi László, Geiger János, Malvic Tomislav   +2 more
doaj   +1 more source

The method of identification of abandoned channel by dense well pattern and its application in A Oilfield [PDF]

E3S Web of Conferences
The existence of abandoned channel represents the end of the evolution history of single river channel. Taking the C layer in B area, A oilfield as an example, synthesizing the logging response characteristics, plane distribution pattern and the relative
Wang Xiaolei
doaj   +1 more source

Modified bar bending method of thoracoscopic nuss procedure on pectus excavatum: a retrospective single-center study

BMC Pediatrics, 2023
Background Pectus excavatum (PE) is the most common disease of chest wall deformity, with an incidence of 1 in 300—400 births. Nuss procedure has proved to be the best surgical treatment method and has been widely used after clinical use for 30 years. We
Jichang Han, Yaru Mou, Dongming Wang, Qiongqian Xu, Jian Wang   +4 more
doaj   +1 more source

Solution-region-based synthesis approach for selecting optimal four-bar linkages with the Ball–Burmester point [PDF]

Mechanical Sciences, 2019
In this paper, we present a solution-region-based synthesis approach for selecting optimal four-bar linkages with a Ball–Burmester point. We discuss both general and special cases of the Burmester point that coincide with the Ball point at the pole of ...
L. Yin, L. Huang, J. Huang, L. Tian, L. Tian, F. Li, F. Li   +6 more
doaj   +1 more source