Hai-Ning Liu

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In theoretical computer science, and, in particular, in automata and formal language theory, questions arise concerning words and sets of words in free monoids. Results and techniques from the study of the combinatorial algebra of the free monoid have provided an “algebraic” basis for dealing with many of these questions. In recent years there has been(More)
BACKGROUND The transmission of hemorrhagic fever with renal syndrome (HFRS) is influenced by environmental determinants. This study aimed to explore the association between atmospheric moisture variability and the transmission of hemorrhagic fever with renal syndrome (HFRS) for the period of 1991-2010 in Changsha, China. METHODS AND FINDINGS Wavelet(More)
BACKGROUND China has the highest incidence of hemorrhagic fever with renal syndrome (HFRS) worldwide. Reported cases account for 90% of the total number of global cases. By 2010, approximately 1.4 million HFRS cases had been reported in China. This study aimed to explore the effect of the rodent reservoir, and natural and socioeconomic variables, on the(More)
BACKGROUND Hemorrhagic fever with renal syndrome (HFRS), a rodent-borne infectious disease, is one of the most serious public health threats in China. Increasing our understanding of the spatial and temporal patterns of HFRS infections could guide local prevention and control strategies. METHODOLOGY/PRINCIPAL FINDINGS We employed statistical models to(More)
Recently, several problems of concurrency control in data base systems and in parallel computation have been modelled by considering properties of strings and the algebra of string-rewriting [6]. In this framework, the ‘alphabet’ represents a set of functions, and concatenation of symbols over the alphabet resulting in strings represents the composition of(More)
BACKGROUND The transmission of hemorrhagic fever with renal syndrome (HFRS) is influenced by population dynamics of its main host, rodents. It is therefore important to better understand rodents' characteristic in epidemic areas. METHODOLOGY/PRINCIPAL FINDINGS We examined the potential impact of food available and climatic variability on HFRS rodent host(More)