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Among IP traceback techniques, deterministic packet marking (DPM) can locate the ingress border routers of destination domains with sound effectiveness and robustness. Yet DPM is inefficient to trace to attack origins of remote domains. A novel mechanism, across-domain deterministic packet marking (ADDPM), for IP traceback is proposed. It uses the 30-bit(More)
Cell‑based therapy is a potential alternative to liver transplantation. The goal of the present study was to examine the in vivo and in vitro hepatic differentiation potential of adipose tissue‑derived mesenchymal stem cells (AT‑MSCs) and to explore its therapeutic use. AT‑MSCs were isolated and cultured with hepatic differentiation medium. Bioactivity(More)
The analysis of human behavior is the basis of understanding many social phenomena. Based on a large database of taxi billing system, this paper provides an analysis of human mobility data in an urban area of using taxi services in Shanghai. By studying the spatial temporal data of taxi services, it shows that the distribution of running time interval is(More)