左小青 旅行与生活有关

采访的前天夜里,左小青刚从台湾回到北京,身上的阳光及海水的气息似乎还未散去。“兰屿是全台湾最美的地方。我回来后一直告诉身边的朋友一定要去兰屿看看。兰屿是一个让人无所事事的地方,观光客很少,能完全让我放轻松．什么也不做才是真正的度假。旅行的时候,我喜欢过过当地人的生活,比如穿着背心、拖鞋和短裤到兰屿的小村庄最市井的小店喝咖啡吃早餐。”     

Minimum-Cost Distances in Spatial Analysis

An axiomatic approach to distance is developed which focuses on those behavioral concepts of distance related to movement in space. In particular, spatial movement by behaving units is postulated to involve a choice from among some set of abstract trips in space, and implicitly, to involve the minimization of some relevant notion of trip costs. In this context, the relevant behavioral notion of distance in space is taken to be the minimum-cost distance generated by this choice process. These trip-cost concepts extend the classical notions of paths, path lengths, and shortest paths in metric spaces. Hence many of the analytical results of the paper involve extensions of classical shortest-path distance properties to minimum-cost distances. In addition to these extensions, a characterization theorem is given which specifies the possible functional relationships between trip costs and their associated path lengths. These relationships include most functional forms which are commonly employed in the literature.     

Travel

加拿大你来代言 “加拿大,你来代言”明星代言人全国选拨活动于日前正式启动。登录加拿大旅游局官方网站www．keepexploring．cn提交报名资料,和自己的旅伴一起用视频短片或图片展现自己,就有可能搭乘加拿大航空公司商务舱免费体验加拿大独一无二的行程,并可获得3万元人民币的旅行基金,还能成为旅游电视节目的出镜明星。     

Travel,migration, exile: Garibaldi's global fame

In this article, it is argued that Garibaldi's global fame owes much to his own experiences as a migrant and exile in the Americas. Overseas, Garibaldi not only acquired several practical and political skills, he also built up an important network of friends and supporters and became a hybrid figure able to adapt his image to diverse political settings. At the same time, Garibaldi relied on the trope of exile, developed by people like Ugo Foscolo, to define his opposition to, first, Italy's Restoration governments and, after Italian unification, the new moderate liberal regime. The article also looks at Garibaldi's life on Caprera and it is further argued that here Garibaldi combined elements of his previous experiences to fashion a role for himself as a ‘foreigner in Italy’. Garibaldi was a symbol of many worlds as well as a hero of two and it is precisely this hybrid nature of his appeal that can explain his global popularity.     

Shortest-Path Distances: An Axiomatic Approach

An axiomatic approach to distance is developed which focuses on those concepts of distance related to movement in space. The most fundamental types of such distances generally involve some notion of shortest paths between points, where the relevant concept of path length can be any additive attribute of paths (such as physical miles, hours spent in traveling, or gallons of fuel consumed). In particular, the shortest-path distance between any two points in space is here taken to be the greatest lower bound on all path lengths between these points. This notion of shortest-path distance is shown to be formally equivalent to a quasimetric, i.e., a distance which satisfies only the classical triangularity axiom for metrics. The main analysis of the paper focuses on the question of whether or not such shortest-path distances can actually be realized, i.e., on whether there exist shortest paths in space. The central result is to establish a general set of conditions under which such shortest paths always exist. In addition, a condition for the uniqueness of these paths is also established.     

Shortest Distances in a Modified Transportation Network

Taking as the starting point an undirected source network and a set of possible new links that can be used to extend the source network, a method is proposed to determine, by simple inspection of a matrix tableau, all shortest distances in any extended network, without using a shortest path algorithm. In consequence, this method may be a useful tool for analyzing and judging network extensions. In particular, computation time can be saved in many complex network optimization methods that use shortest path algorithms. The computer experiments show that the method is feasible even when an extended network may differ from the source network by several dozens of branches.     

旅途开心果

<正>头等舱不到洛杉矶一个金发碧眼的女人上了飞机,在头等舱坐下。空姐过来检票,告诉她:您的机票是普通舱的,不能坐在这里。女人说:我是白种人,是美女,我要坐头等舱去洛杉矶。空姐无可奈何,只好报告组长。组长对美女解释说:很抱歉!您买的不是头等舱     

悠游自在轻旅行

<正>Down by the riverside I laid my burdens down,Now I'm traveling light,My spirit lifted high,I found my freedom now,And I'm traveling light。(走在河滩上,我卸下了负重,现在我轻装前行。我的精神在升腾,我终于找到了自由。我轻装前行。)——《Traveling Light》JoelHanson&Sara Groves     

旅途开心果

<正>旅客空姐的爆笑对答1.旅客问:"小姐啊,客舱里有苍蝇啊,他们怎么做飞机都不买机票哦?!"答:"他们是加机组的!"2.乘务员:"您好,请问喝点什么?"     

旅途开心果

<正>风景最美某人非常喜欢爬山。一次,他去瑞士度假,请了一个当地人作向导一起去爬一座高山。在他们通过一处险要的地方时,向导对他说:"小心点,先生,这里挺危险的,很容易掉下去。不过,如果你掉下去时,别忘了向右看,那儿的风景最美。"     

旅途开心果

<正>拍照一位女士站在希腊一处古迹的倒地石柱前拍纪念照。"千万别把汽车拍进去",她大声说,"不然我丈夫一定会说是我把柱子给撞倒的。"