Heavy-tailed distributions in fatal traffic accidents: role of human activities

Human activities can play a crucial role in the statistical properties of observables in many complex systems such as social, technological and economic systems. We demonstrate this by looking into the heavy-tailed distributions of observables in fatal plane and car accidents. Their origin is examined and can be understood as stochastic processes that are related to human activities. Simple mathematical models are proposed to illustrate such processes and compared with empirical results obtained from existing databanks.Comment: 10 pages, 5 figure

护士执行抗肿瘤化疗药物的防护现状及防护措施

To reduce the occupational hazard of chemotherapy in different kinds of cancer patients to clinical nurses. Through a lot of researches chemotherapy drug protection in recent years, the harmfulness of chemotherapy drugs on nurses are analyzed based on the current domestic protection status of chemotherapy drugs. The correct chemotherapy protective measures are put forward. Conclusion: The nurses must master the risk factors, protection status and protective measures of the occupational hazards of chemotherapy drugs, so as to enhance their protective skills and improve their self-protection ability. 为了降低各类肿瘤患者化疗对临床护士的职业危害。通过大量检索近几年有关于化疗药物防护的文献，分析了化疗药物对护士的危害性，针对目前国内对化疗药物的防护现状，提出如何正确使用化疗防护措施。总结护士必须掌握化疗药物职业危害的危险因素、防护现状及防护措施，从而增强防护技能，提高自我保护能力