The continuous improvement of new energy penetration reduces the inertia system, which leads to frequency deviation and rate change (RoCoF) being easily exceeded. To improve stability sending-end power systems with large-scale renewable access via ultra-high voltage direct current (UHVDC), coordinated control for UHVDC participating in system regulation (FR) including primary FR inertial respon...

Hedgehog (Hh) is a secreted signaling protein that regulates the development of many organ systems. It can travel from its site of synthesis, a process that involves covalent attachment of cholesterol to its carboxyl terminus, proteins with putative sterol sensing domains in both sending and receiving cells, and glycosaminoglycans. Understanding how the movement of Hh is controlled and propelle...

Network bandwidth denial of service (DoS) attacks seek to consume the available bandwidth or router resources at or near a target host or network, such that legitimate traffic cannot reach its destination. The primary means for achieving this goal by sending large traffic volumes (packet floods) that do not respect congestion control signals, such as that in the Transmission Control Protocol (T...

Quantum cryptography offers new methods of secure communication. Unlike traditional classical cryptography, which employs various mathematical techniques to restrict eavesdroppers from learning the contents of encrypted messages, quantum cryptography is focused on the physics of information. The process of sending and storing information is always carried out by physical means, for example phot...

I am grateful to the editors of Mathematics of Computation for sending me Professor Zhang Zhenxiang’s remarks on my paper [1], and am indebted to him for pointing out some inaccuracies. • Page 1032, line 18: Replace “from (4′) if follows” by “(4′) follows from”. • Page 1032, line 24: Replace “(4′)” by “(4′′)”. • Page 1034, Table 1: In the row labelled “n7”, shift the data in the last column to ...

Common video transmission system includes the following work like video collection and encoding of sending end, network transmission and reception, decoding and analysis of receiving end. This paper mainly focuses on elaborating and concluding principles and related techniques involved in video transmission system, such as rate control, transmission control mechanism, video retrieval, intellige...

In 2006 the UK based charity ‘Health Improvement Project Zanzibar’ (HIPZ) was established to try and combat this. An agreement was reached with the Ministry of Health that gave HIPZ direct control over the rural hospital at Makunduchi for 10 years. The model centres on sending volunteer doctors out for 6 month sabbaticals where they live and work alongside local staff, immerse themselves in the...