A 6.5-year continuous record of sea surface salinity and seawater isotopic composition at Harbour of Ishigaki Island,southwest Japan

We produced continuous records of sea surface salinity and isotopic composition from 1998 to 2004 at Ishigaki Island, southwest Japan, and found clear seasonal variations in salinity and oxygen isotopic composition and increasing trends of them after 1999. These increasing trends could be principally due to the decreasing difference between local precipitation (P) and evaporation (E), as a result of the reduction of horizontal vapour transport from adjacent oceans. When samples collected in heavy rainfall events were excluded, the average Δδ¹⁸O/Δ salinity slope was obtained as 0.31, 0.35 in summer and 0.28 in winter. Estimated E/P ratios based on the isotopic box model are in good agreement with the ratios of independently estimated E to observed P.     

图像领域日本专利检索资源简介

图像领域日本专利申请较为活跃,对于日本专利文献的有效检索有利于企业了解图像领域技术发展,以及更具针对性的进行专利布局.介绍了常用的日本专利检索资源;日本特许厅网站和PATENTICS网站.使用本文的方法能够实现对日本专利文献的有效检索,从而有利于图像企业的技术进步和专利发展.     

基于耳机key的手机银行数字证书应用研究

提出了一种基于耳机key的手机银行数字证书方案.首先对手机银行数字证书在应用和科研领域的现状进行了总结,接着说明了手机耳机key的技术原理和优势,最后给出了基于手机耳机key的手机银行中数字证书的应用方案.与传统方法相比,本文的方案具备非常好的安全性和便捷性.     

科学拓展活动在日本的体制化

＂科学拓展活动＂是高等院校、科研院所以及科学学会、科学基金会之类公共团体开展旨在提高公众的科学意识、增进公众与科学家之间的相互理解的科学传播活动的总称。科研人员有必要围绕自己所开展的研究平等地面向公众开展双向科学传播活动,也即开展科学拓展活动,这是由科学家的社会责任所决定的。科学拓展活动20世纪末21世纪初才开始在英美兴起,各国重视科学家与公众的对话交流主要是因为科学发展离不开公众的支持,科学决策需要公众参与。尽管日本大力倡导开展科学拓展活动的时间稍晚于英国和美国,但是不到十年科学拓展活动就在日本实现了体制化,尽管如此,但是真要把科学拓展活动抓好,尚有许多问题需要解决。     

Bayesian Logistic Betting Strategy Against Probability Forecasting

We propose a betting strategy based on Bayesian logistic regression modeling for the probability forecasting game in the framework of game-theoretic probability by Shafer and Vovk [1 Shafer , G. , and Vovk , V. 2001 . Probability and Finance: It's Only a Game! Wiley .[Crossref] , [Google Scholar]]. We prove some results concerning the strong law of large numbers in the probability forecasting game with side information based on our strategy. We also apply our strategy for assessing the quality of probability forecasting by the Japan Meteorological Agency. We find that our strategy beats the agency by exploiting its tendency of avoiding clear-cut forecasts.     

Nonparametric Approach to Analysis of Space-Time Data on Earthquake Occurrences

Abstract

As an alternative to traditional, parametric approaches, we suggest nonparametric methods for analyzing spatial and temporal data on earthquake occurrences. Nonparametric techniques are particularly adaptive to anomalous behavior in the data and provide a new way of accessing a variety of different types of information about the way in which both intensity and magnitude of events evolve in time. They can be employed to estimate the spatial trajectory of event clusters as a function of time, and to define quiescent and active periods. The latter application suggests new approaches to forecasting high magnitude events. Our methods are founded on multivariate techniques for curve and surface estimation, particularly in contexts where curves or surfaces are unbounded at points or along lines.     

ICP-MS测定自来水中的金属元素

利用电感耦合等离子体质谱仪的高灵敏度、高准确性和多元素同时分析的特点,可以快速精确地测定自来水中的微量金属元素含量。由于自来水样品中的有害金属元素含量比较低,需要高灵敏度的分析方法,所以与其他元素分析技术相比ICP-MS优势明显,在自来水样品分析中已经得到了广泛的应用。本文用电感耦合等离子体质谱法(ICP-MS)和原子吸收分光光度法(AAS)测定自来水中的金属元素,并对中国与日本自来水进行了取样分析和比较。     

中日高校培养科学传播人才课程设置的比较研究

本文以"为什么传播"、"传播什么"和"怎样传播"为分析框架,尝试了中日高校科学传播人才培养目标和课程设置的比较研究。与日本相比,我国的科学传播教育表现为培养目标聚焦不足;在"如何传播"上没有形成一套课程体系;大多数院校的课程设置虽然集中在理论层面,但对"为什么传播"和"传播什么"的问题并没有系统、深入的课程体系来对应。这些问题的背后是教育界、科技界、媒体以及政府相关部门对科学传播的认识不足以及科学传播领域的研究不足。     

美国物理化学家朗缪尔在中日2国讲学概况

欧文·朗缪尔是1932年诺贝尔化学奖得主。1934年,朗缪尔受邀前往日本和中国北平学术演讲,与我国物理学家、化学家进行座谈。他的精彩演讲给我国学者留下了深刻的印象。依据朗缪尔文集等文献和当时报刊的报道,力图重现朗缪尔中日讲学之盛况。     

郑和督师十万从桃花渡出使日本说探讨——评程万军《鲜为人知的“郑和下东洋”》

文章对《鲜为人知的“郑和下东洋”》一文中的部分论述提出了质疑, 通过查证明确阐述了朱元璋、朱棣父子对日本交往的过程以及关于海禁的政策, 并从多个角度分析得出“郑和督师十万东渡出使日本论”是有违史实的结论, 以供广大学者参考。