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In this paper, the quality of service (QoS) metrics and user demand model are established in high altitude platforms (HAPs) broadband communication network. A methodology of mobile base station placement is proposed with QoS and user demand guarantee for the first time. Besides, the HAPs placement optimization framework is established by optimizing the(More)
Acetoin (AC) is a volatile platform compound with various potential industrial applications. AC contains two stereoisomeric forms: (3S)-AC and (3R)-AC. Optically pure AC is important potential intermediate and widely used as a precursor to synthesize novel optically materials. In this study, chiral (3R)-AC production from meso-2,3-butanediol (meso-2,3-BD)(More)
Distributed satellite cluster network can provide a flexible space scenario with guaranteed quality of service (QoS) by making different kinds of satellites to accomplish missions collaboratively. In such a multi-satellite heterogeneous system, reasonable power control scheme can effectively improve the system performance. This paper analyzes the(More)
In this paper, an investigation into the topology structure design and performance analysis the distributed satellite cluster network (DSCN) in space information networks (SINs) at geosynchronous orbit (GEO) is presented. Use of concepts of domains, strong/weak link, hubs, small world, and degree realizability by employing Network Science Theory is examined(More)
The high altitude platform (HAP) is an important communication platform for cloud storage in the next generation internet. The Multiple-input multiple-output (MIMO) techniques provide the significant diversity and multiplexing gain, which can improve the network performance effectively. In this paper, a virtual MIMO model is proposed by networking the(More)
Pituitary tumor is an intracranial tumor; because of the development of neuroimaging technology in recent years, morbidity is likely to increase. Evidence showed impaired cognitive ability of patients with pituitary adenoma. There is evidence that neurobehavioral disorders are common in pituitary adenoma patients. This disorder is because of the cognitive(More)
Multibeam satellite communication systems (MSC-Ss) have been applied to provide efficiently power and bandwidth utilization for broadband service by employing frequency reuse. However, bandwidth for each beam is divied by frequency reuse which is used to mitigate the adjacent beam interference. Recently researchers resorted precoding as a novel interference(More)