This document provides 4 links to Flickr images demonstrating different photo effects: Cross Process, Posterize, Focal Zoom, and 1960's. Each link is labeled with the name of the effect and leads to an example image on Flickr showcasing how that effect can alter the look of a photo.
Les alumnes de llatí de quart d'ESO, Gemma Àlamos, Judith Batet i Paula Utrilla ens presenten l'episodi mitològic del rapte de la donzella Prosèrpina, filla de la deessa Ceres. Segons els antics la formació de les estacions de l'any estava relacionada amb aquest fet. Anem a veure què hi va passar...
El documento describe la composición y características del agua de mar. Consiste principalmente en sales disueltas como cloruro sódico, con pequeñas cantidades de otros elementos. El agua de mar es ligeramente alcalina, con un pH entre 7.5 y 8.4. Contiene gases disueltos como nitrógeno, oxígeno y dióxido de carbono. El documento también describe el relieve oceánico, incluyendo la plataforma continental, el talud continental, las dorsales oceánicas y las fosas oceánicas, así como
Las olas son formadas por los vientos que barren la superficie de las aguas. Su altura depende de la velocidad, persistencia y dirección del viento. Una vez formadas, las olas se desplazan lentamente disipando su energía a través de la fricción con el aire y la interacción con el fondo marino o la costa. Las mareas son provocadas por la atracción gravitatoria de la Luna y el Sol sobre las aguas, siendo mayor cuando están alineados, lo que causa la pleamar, y menor cuando forman áng
Breanna Stagemyer is a hard-working student who enjoys working with children of all ages and encouraging healthy habits. She is open-minded to new opportunities, able to set and maintain goals to succeed, and can prioritize needs over wants. Breanna can be contacted at breanna.stagemyer@gmail.com and is seeking new opportunities to make a difference in people's lives.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
This document provides 4 links to Flickr images demonstrating different photo effects: Cross Process, Posterize, Focal Zoom, and 1960's. Each link is labeled with the name of the effect and leads to an example image on Flickr showcasing how that effect can alter the look of a photo.
Les alumnes de llatí de quart d'ESO, Gemma Àlamos, Judith Batet i Paula Utrilla ens presenten l'episodi mitològic del rapte de la donzella Prosèrpina, filla de la deessa Ceres. Segons els antics la formació de les estacions de l'any estava relacionada amb aquest fet. Anem a veure què hi va passar...
El documento describe la composición y características del agua de mar. Consiste principalmente en sales disueltas como cloruro sódico, con pequeñas cantidades de otros elementos. El agua de mar es ligeramente alcalina, con un pH entre 7.5 y 8.4. Contiene gases disueltos como nitrógeno, oxígeno y dióxido de carbono. El documento también describe el relieve oceánico, incluyendo la plataforma continental, el talud continental, las dorsales oceánicas y las fosas oceánicas, así como
Las olas son formadas por los vientos que barren la superficie de las aguas. Su altura depende de la velocidad, persistencia y dirección del viento. Una vez formadas, las olas se desplazan lentamente disipando su energía a través de la fricción con el aire y la interacción con el fondo marino o la costa. Las mareas son provocadas por la atracción gravitatoria de la Luna y el Sol sobre las aguas, siendo mayor cuando están alineados, lo que causa la pleamar, y menor cuando forman áng
Breanna Stagemyer is a hard-working student who enjoys working with children of all ages and encouraging healthy habits. She is open-minded to new opportunities, able to set and maintain goals to succeed, and can prioritize needs over wants. Breanna can be contacted at breanna.stagemyer@gmail.com and is seeking new opportunities to make a difference in people's lives.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
A China é o país mais populoso do mundo, com mais de 1,4 bilhão de pessoas. Sua população é maior do que a da União Europeia e dos Estados Unidos juntos. A densidade populacional da China é de cerca de 150 pessoas por quilômetro quadrado em média.
La Unión Europea ha acordado un embargo petrolero contra Rusia en respuesta a la invasión de Ucrania. El embargo forma parte de un sexto paquete de sanciones y privará a Rusia de miles de millones de euros en ingresos. Sin embargo, Hungría, Eslovaquia y la República Checa recibirán exenciones temporales debido a su dependencia del petróleo ruso.
El documento presenta descripciones de varios paisajes de ríos españoles, incluyendo el Río Andarax, Río Sil, Río Oria y Río Guadiana. Para cada río, describe la fotografía, el relieve, el clima, la vegetación, la localización geográfica y las posibles consecuencias como recursos hídricos o riesgo de inundaciones. También incluye descripciones del Parque Nacional de Monfragüe y paisajes de Almería, la llanura castellana, la Sierra Nevada y diferentes tipos de
Dehydration from diarrhea, vomiting, and cramps was common as people would eat old food and drink contaminated water. People faced health issues from eating spoiled food and drinking unsafe water since sanitation was not as advanced. Proper food storage, water treatment, and hygiene could have prevented some of the dehydration and illnesses mentioned in the passage.
1. Global energy demand is projected to increase by over 30% by 2035, with fossil fuels continuing to dominate the energy mix.
2. Transitioning to a more sustainable energy future will require major policy and technological changes to accelerate energy efficiency gains and the deployment of renewable energy.
3. International cooperation will be crucial to the development and sharing of innovative solutions to transition global energy systems to a more sustainable path.
This document lists various graphic design services provided including website design, logo design, label design, web banner design, CD design, poster design, advertisement design, flyer design, shirt design, and illustration for promotional items like stickers. The designer created graphics for websites, logos, labels, banners, CDs, posters, ads, flyers, shirts and other promotional materials for a company called Wild Honey.
The document discusses common architectural choices for building large analytic systems to handle emerging hardware, software, and data volume needs. It outlines storage and processing principles like using a massively parallel processing (MPP) cluster architecture with distributed data storage by value rather than chunks, column-oriented storage, immutable write-once storage, and processing techniques that trade CPU for I/O bandwidth and bring processing to the data. The document also introduces Vertica's community edition.
eBay processes extremely large amounts of data daily, including over 50 terabytes of new data with over 100,000 data elements. Their analytics platform processes over 100 petabytes of data per day with over 5,000 business users. eBay uses several data platforms including SQL, Hadoop, and Singularity to analyze both structured and unstructured data in real-time and handle millions of queries per day. Singularity is used to process semi-structured data more efficiently through functions like normalize_list and xpath that can extract and aggregate metrics from complex event data.
This document discusses LinkedIn's data infrastructure. It describes how LinkedIn handles large volumes of user data across online, nearline and offline systems. Key systems discussed include Kafka for messaging, Databus for change data capture, Voldemort for online key-value storage, and Espresso for indexed, timeline-consistent distributed storage. Espresso provides a rich data model and APIs for applications to access user data.
This document summarizes Facebook's real-time analytics systems. It describes Data Freeway, which uses a scalable data streaming framework to collect log data with low latency. It also describes Puma, which performs reliable stream aggregation and storage by sharding computations in memory and checkpointing to HBase. Future work may include open sourcing components and adding scheduler support.
The document discusses the YouTube Data Warehouse (YTDW), which consolidates YouTube data including videos, playbacks, and logs. It is very large, with petabytes of uncompressed data and trillion row tables. Key technologies used include Sawzall, Tenzing, Dremel, and ABI. Sawzall is used for ETL, Tenzing for SQL queries and ETL, and Dremel for reporting queries. Dremel has low latency but less power than Sawzall and Tenzing. The ABI tool is used for reporting and dashboards. Future work includes improving Dremel and replacing Tenzing with Dremel.
The document discusses the internals and architecture of the Nginx web server. It covers Nginx's event-driven and non-blocking architecture, its use of memory pools and data structures like radix trees, how it processes HTTP requests through different phases, and how modules and extensions can be developed for Nginx. The document also provides an overview of Nginx's configuration, caching, and load balancing capabilities.
8. /catalog/cd/title | catalog/cd/artist
选择所有 title 以及 artist 元素
//title | //artist
选择所有 title 以及 artist 以及 price 元素
//title | //artist | //price
选择属性
在 XPath 中,除了选择元素以外,也可以选择属性。属性都是以@开头。例如选择文件中所有叫做 country 的属性。
//@country
选择所有含有 country 这个属性的 cd 元素:
//cd[@country]
以下语法选择出含有属性的所有 cd 元素
//cd[@*]
以下语法选择出 country 属性值为 UK 的 cd 元
//cd[@country='UK']
9. Selenium 私房菜系列3 -- Selenium API 参考手
3
册【ZZ
ZZ
ZZ】
大家在编写测试案例想查阅 Selenium API 说明时,可以查阅本文,否则请跳过!
(注:这里 API 版本比较老,新版本的 Selenium 的 API 在这里不一定能找到。)
Selenium API 说明文档(转载自:http://wiki.javascud.org/display/springs/SeleniumRefrence)
Commands (命令)
)
� Action
对当前状态进行操作
失败时,停止测试
� Assertion
校验是否有产生正确的值
� Element Locators
指定 HTML 中的某元素
� Patterns
用于模式匹配
1. Element Locators (元素定位器)
)
* id=id
id locator 指定 HTML 中的唯一 id 的元素
* name=name
name locator 指定 HTML 中相同 name 的元素中的第一个元素
* identifier=id
identifier locator 首先查找 HTML 是否存在该 id 的元素, 若不存在,查找第一个该 name 的元素
* dom=javascriptExpression
dom locator 用 JavaScript 表达式来定位 HTML 中的元素,注意必须要以"document"开头
例如:
dom=document.forms['myForm'].myDropdown
dom=document.images[56]
* xpath=xpathExpression
xpath locator 用 XPath 表达式来定位 HTML 中的元素,必须注意要以"//"开头
例如:
xpath=//img[@alt='The image alt text']
xpath=//table[@id='table1']//tr[4]/td[2]
* link=textPattern
29. (1).测试案例(Testcase)通过 Client Lib 的接口向 Selenium Server 发送 Http 请求,要求和 Selenium Server 建立连接。
为什么要通过发送 Http 请求控制 Selenium Server 而不采用其他方式呢?从上文可以看出,Selenium Server 是一个独立
的中间服务器 (确切地说是代理服务器) 它可以架设在其他机器上!
, 所以测试案例通过发送 HTTP 请求去控制 Selenium
Server 是很正常的。
(2).Selenium Server 的 Launcher 启动浏览器,把 Selenium Core 加载入浏览器页面当中,并把浏览器的代理设置为
Selenium Server 的 Http Proxy。
(3).测试案例通过 Client Lib 的接口向 Selenium Server 发送 Http 请求,Selenium Server 对请求进行解析,然后通过 Http
Proxy 发送 JS 命令通知 Selenium Core 执行操作浏览器的动作。
(4).Selenium Core 接收到指令后,执行操作。
(5).浏览器收到新的页面请求信息(因为在(4)中,Selenium Core 的操作可能引发新的页面请求),于是发送 Http 请 求 ,
请求新的 Web 页面。
30. 由于 Selenium Server 在启动浏览器时做了手脚,所以 Selenium Server 会接收到所有由它启动的浏览器发送的请求。
(6).Selenium Server 接收到浏览器的发送的 Http 请求后,自己重组 Http 请求,获取对应的 Web 页面。
(7).Selenium Server 的 Http Proxy 把接收的 Web 页面返回给浏览器。
为什么 Selenium RC 中的 Selenium Server 需要以这种代理服务器的形式存在呢?下一篇继续介绍: >