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因为人类贪心又孤独。渴望有种东西,可以战胜血缘的羁绊,肤色的偏见,民族的差异,财富的沟壑,礼教的拘束。渴望有一个人,即使知道你愚蠢、轻佻、头脑空虚,势利、庸俗,是个二流货色,但还是爱你。渴望对方爱你所爱,想你所想,不求回报,为你煞费苦心,为你喜怒哀乐。渴望他懂你的灵魂,渴望他理解你存在的意义,渴望他到你的世界来看看,渴望他为你带来一盏灯,让你暖一暖。渴望他承担你的寄托,成为你情感上的支柱。你对他也如此。之前不知道在哪里看到过一句话:人类的孤独像是一种与生俱来的残疾。没有人能真正解救你的孤独,但有个人陪着,总归会好受一点儿。就像瞎子和瘸子,在这世上互相搀扶着向前走。因此千千万万被幻想冲昏头脑的“你”和“我”,以为爱情可以战胜俗世里那些根深蒂固的期待。事实证明,大部分的“爱情”只是将生活中所有的荒诞,痛苦,龃龉拆开了一纤一毫摆给人们看,警告人们“爱情”是不存在的,或者转瞬即逝的,不堪一击的。但人类的贪婪又有点可爱。面对爱情,天生就像个赌徒。谁知道这种像六合彩一样的东西不会发生在自己的头上呢。赌一把也好,就一把。反正过把瘾之后都得死。

New York time is three hours ahead of California time, but California time isn’t slowing down.

Someone graduated at 22, but waited five years to find a good job!

Someone became a CEO at 25, then he died at the age of 50.

There are also people who become CEOs as late as 50 years old, then live to be 90 years old.

Someone is still single, there are also people who are married.

Obama retired at 55, Trump didn’t become president until he was 70.

Everyone in the world has their own development time zone.

Some people around you seem to walk ahead of you, there are also people who appear to be walking behind you.

But in fact, everyone has their own pace in their own time zone.

Don’t be jealous or laugh at them.

They’re all in their own time zone, and so are you!

Life is about waiting for the right moment to act.

So, take it easy.

You are not behind.

You are not ahead.

In your own time zone that fate has arranged for you, everything is on time.

39岁IT行业北漂大叔失业一周后拿到了年50万的offer. 就在一周多之前,公司和我协商解除合同,给了我补偿金,于是我下岗了[打脸]。从下岗的第一天起我就开始了疯狂的投简历,主要通过boss直聘和猎聘,看着差不多就投,就在昨天我经过了4轮面试终于拿下了一家外企年50万的offer[灵光一闪].总结这次找工作,我的经验如下:1.样样通不如精专一样,就我自己而言,工作这么多年一直在一个领域,所以对于类似的职位是很有把握拿下的,事情也的确如此。2.英语绝对是你应该平时多练练的,很多人羡慕在外企工作,没有996而且wlb,但外企对于英语都有要求,所以你平时就得多练,不然根本来不及。3.工作的同时需要给自己准备plan b,也就是副业,不然说不定哪天就被裁员了,马上就没有了收入,我最近也要开始准备plan b了[偷笑]以上就是我的总结,但还有一点我不得不说就是这次运气也的确是好,不然按今年北京这个就业形势,想找份不降薪的工作还是挺难的,而我这次运气的确有点儿爆棚了[灵光一闪]………大家加油

基本概念

红黑树是一种自平衡的二叉搜索树,它在插入和删除操作时会通过一系列的旋转和颜色调整来保持树的平衡,从而保证了在最坏情况下的查找、插入和删除操作的时间复杂度都是 O(log n),其中 n 是树中节点的数量。

红黑树的性质

  • 根属性 根节点必须是黑色
  • 红属性 红节点孩子必须是黑色
  • 黑属性 任何一个结点到叶子结点包含黑色结点数相同(黑高度)
  • 红黑树高度至多为:2lg(n+1)

黑高度:一个结点到它的叶子结点(不含)经过的黑色结点数

红黑树通过旋转操作来维护平衡,主要有左旋和右旋两种操作,它们通过重新排列节点来保持或恢复树的性质。插入和删除操作可能会导致颜色违规或者黑高度违规,因此在执行这些操作后,红黑树需要通过颜色调整和旋转来恢复平衡。

总之,红黑树的平衡性质和性能保证使它在需要频繁进行插入、删除和查找操作的数据结构中表现出色,比如在各种编程语言的标准库中广泛使用,例如C++的std::map和std::set,以及Java的TreeMap和TreeSet。

红黑树(Red-Black Tree)和AVL树(Adelson-Velsky and Landis Tree)都是自平衡二叉搜索树,用于在动态数据集上进行高效的插入、删除和搜索操作。它们之间有一些相似之处,但也存在一些关键的区别。

  • 平衡性:
    • 红黑树:红黑树保证了一种弱平衡,即树的高度最多是2倍的对数级别。这使得红黑树在插入和删除操作时具有更高的灵活性,但可能导致一些操作稍微不如AVL树高效。
    • AVL树:AVL树是一种严格的平衡树,保证任何节点的左子树和右子树的高度差(平衡因子)不超过1。这确保了AVL树在平衡方面表现更好,但在插入和删除操作时可能需要更多的旋转来维持平衡。
  • 插入和删除操作的性能:
    • 红黑树:由于红黑树的平衡性要求相对较弱,插入和删除操作通常需要更少的旋转操作,因此在这些操作上性能可能比AVL树更好。
    • AVL树:AVL树的严格平衡性可能导致插入和删除操作需要更频繁的旋转操作,因此在这些操作上可能比红黑树略逊一筹。
  • 适用场景:
    • 红黑树:适用于在插入和删除操作较频繁、搜索操作相对较少的场景,例如在数据库索引中。
    • AVL树:适用于搜索操作频繁、插入和删除操作相对较少的场景,以及对于对树的平衡性要求较高的场景。

The success of Changsha’s city branding strategy can be observed through specific case studies. For instance, the development of the Changsha International Finance Square (IFS) showcases how effective city branding can attract international luxury brands, boosting the city’s reputation as a shopping destination. The IFS has become an iconic symbol of Changsha’s modernity and economic vibrancy. Similarly, the annual Orange Isle Music Festival demonstrates how city branding can leverage cultural assets to attract tourists and foster a sense of community among residents.

To further enhance the effectiveness of city branding practices, several suggestions can be considered. First, it is essential to align the branding strategy with Changsha’s unique strengths and aspirations, emphasizing its cultural heritage, technological advancements, and quality of life. Second, engaging and involving residents as brand ambassadors can foster a sense of ownership and ensure authenticity in the city’s brand representation. Third, collaboration between the local government, businesses, and community organizations is crucial for effective city branding, as it enables the development of a shared vision and coordinated efforts. Lastly, continuous evaluation and monitoring of the branding strategy’s impact on tourism, investment, and resident satisfaction will help identify areas for improvement and adaptation.

City branding has become a crucial tool in promoting cities, attracting tourists and investors, and improving urban governance. This essay analyzes the city branding strategy employed in Changsha and explores its impact on city branding and urban governance. By drawing from academic and professional literature, as well as specific case studies, the essay also provides suggestions to enhance the effectiveness of city branding practices.

Changsha has successfully utilized its city branding strategy to position itself as a dynamic and innovative metropolis. The city’s branding focuses on showcasing its rich cultural heritage, technological advancements, and welcoming environment. The “Changsha: A City of Stars” campaign highlights the city’s achievements in science, education, and entertainment, emphasizing its status as a hub of talent and creativity. Changsha’s city branding aims to create a strong sense of pride and identity among residents while attracting visitors and businesses.

Changsha’s city branding strategy has significantly improved the city’s image, making it a prominent destination for tourism and investment. The branding efforts have successfully positioned Changsha as a city of cultural significance, featuring historical landmarks such as the Yuelu Academy and Orange Isle. Additionally, Changsha’s reputation as a technological center, with the presence of companies like DJI and Zoomlion, has attracted attention from the global business community. The city’s branding has played a crucial role in raising awareness about Changsha’s unique offerings and differentiating it from other cities in China.

The city branding strategy has also positively influenced urban governance in Changsha. The increased visibility and recognition of the city have led to a surge in tourism, resulting in economic growth and job creation. The revenue generated from tourism has been reinvested in urban development projects, improving infrastructure, public spaces, and transportation systems. Furthermore, Changsha’s brand image as an innovative city has attracted investments in research and development, fostering technological advancements and urban transformation.

The success of Changsha’s city branding strategy can be observed through specific case studies. For instance, the development of the Changsha International Finance Square (IFS) showcases how effective city branding can attract international luxury brands, boosting the city’s reputation as a shopping destination. The IFS has become an iconic symbol of Changsha’s modernity and economic vibrancy. Similarly, the annual Orange Isle Music Festival demonstrates how city branding can leverage cultural assets to attract tourists and foster a sense of community among residents.

To further enhance the effectiveness of city branding practices, several suggestions can be considered. First, it is essential to align the branding strategy with Changsha’s unique strengths and aspirations, emphasizing its cultural heritage, technological advancements, and quality of life. Second, engaging and involving residents as brand ambassadors can foster a sense of ownership and ensure authenticity in the city’s brand representation. Third, collaboration between the local government, businesses, and community organizations is crucial for effective city branding, as it enables the development of a shared vision and coordinated efforts. Lastly, continuous evaluation and monitoring of the branding strategy’s impact on tourism, investment, and resident satisfaction will help identify areas for improvement and adaptation.

Changsha’s city branding strategy has successfully transformed the city’s image, attracting tourists, businesses, and investment. By showcasing its cultural heritage, technological advancements, and welcoming environment, Changsha has positioned itself as a city of stars and innovation. The branding efforts have contributed to economic growth, urban development, and a sense of pride among residents. To further enhance the effectiveness of city branding practices, it is crucial to align the strategy with the city’s unique strengths, engage residents as brand ambassadors, foster collaboration, and continuously evaluate and adapt the branding approach. Changsha’s success serves as an inspiring case study for other cities aiming to enhance their brand image and urban governance.

  1. Anholt, S. (2007). Competitive identity: The new brand management for nations, cities, and regions. Palgrave Macmillan.
  2. Braun, E., & Zenker, S. (2010). Towards an understanding of city branding as an urban phenomenon: Lessons from Hamburg. Marketing Theory, 10(4), 427-442.

欢迎使用 iOS 版 MWeb

MWeb 是专业的 Markdown 写作、记笔记、静态博客生成软件,目前已支持 Mac,iPad 和 iPhone。MWeb 所使用的 Markdown 语法为 Github Flavored Markdown,简称 GFM,这是一种最为广泛使用的 Markdown 语法之一。如果你不知道什么是 Markdown,建议看一下附带的 [Markdown 语法官方说明](Markdown Syntax.md) 文档。GFM 除了支持官方的语法外,还扩展了不少语法。

iOS 版 MWeb 的主要界面和功能

mweb-ios-3

如上图为 iOS 版 MWeb 的主要界面和功能。需要说明的是,iOS 版本 MWeb 目前仅支持查看、编辑、新增 MWeb for Mac 文档库的文档,管理分类、删除等等都不支持。

GFM 语法简介和 MWeb 所支持的扩展语法

回车转为换行

官方的语法规定结尾加 2 个以上空格加换行才会转成换行,也就是 <br /> 标签。MWeb 中有个选项可以直接把换行转成 <br />,不用加上 2 个以上空格,这个选项默认是开启的。如果要关闭,请在设置页面关闭。

任务列表(Task lists)

Markdown 语法:

1
2
- [ ] 任务一 未做任务 `- + 空格 + [ ]`
- [x] 任务二 已做任务 `- + 空格 + [x]`

效果如下:

  • 任务一 未做任务 - + 空格 + [ ]
  • 任务二 已做任务 - + 空格 + [x]

图片大小及对齐

官方和 GFM 都不支持图片大小控制及对齐设置,MWeb 引入的特别的语法来设置图片宽度和居左、居右、居中。如:![图片说明-w450](pic.jpg) 这样表示设置图片宽度为 450。其中 -w450 为设置语法,生成 HTML 时会自动移除。w 表示设置宽度,居左为:-l400,居右为 -r400,居中为 -c400,比如设置一图片宽度为 500 并居中:![-c500](pic.jpg)。 可以看出,MWeb 引入的语法的特点是兼容原来的语法和仅支持设置宽度。

多行或者一段代码

Markdown 语法:

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function fancyAlert(arg) {
if(arg) {
$.facebox({div:'#foo'})
}

}

效果如下:

1
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function fancyAlert(arg) {
if(arg) {
$.facebox({div:'#foo'})
}

}

这个语法目前在 MWeb 中使用,必须前后空一行,才会正确解析。我觉得,在写 Markdown 文档过程中,运用空行很有必要,基本上,块级元素(标题、列表、引用、代码块、表格、段落等),都建议前后空一行。

表格

Markdown 语法:

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第一格表头 | 第二格表头
--------- | -------------
内容单元格 第一列第一格 | 内容单元格第二列第一格
内容单元格 第一列第二格 多加文字 | 内容单元格第二列第二格

效果如下:

第一格表头 第二格表头
内容单元格 第一列第一格 内容单元格第二列第一格
内容单元格 第一列第二格 多加文字 内容单元格第二列第二格

删除线

Markdown 语法:

加删除线像这样用: ~~删除这些~~

效果如下:

加删除线像这样用: 删除这些

LaTeX

Markdown 语法:

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块级公式:
$$ x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} $$

\\[ \frac{1}{\Bigl(\sqrt{\phi \sqrt{5}}-\phi\Bigr) e^{\frac25 \pi}} =
1+\frac{e^{-2\pi}} {1+\frac{e^{-4\pi}} {1+\frac{e^{-6\pi}}
{1+\frac{e^{-8\pi}} {1+\ldots} } } } \\]

行内公式: $\Gamma(n) = (n-1)!\quad\forall n\in\mathbb N$

效果如下(在设置页面中启用 LaTeX 才会看到效果,默认为启用):

块级公式:
$$ x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} $$

\[ \frac{1}{\Bigl(\sqrt{\phi \sqrt{5}}-\phi\Bigr) e^{\frac25 \pi}} =
1+\frac{e^{-2\pi}} {1+\frac{e^{-4\pi}} {1+\frac{e^{-6\pi}}
{1+\frac{e^{-8\pi}} {1+\ldots} } } } \]

行内公式: $\Gamma(n) = (n-1)!\quad\forall n\in\mathbb N$

脚注(Footnote)

Markdown 语法:

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这是一个脚注:[^sample_footnote]

效果如下:

这是一个脚注:^sample_footnote

注释和阅读更多

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