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????非洲的城市化進(jìn)程為成千上萬(wàn)人帶來(lái)了巨大的希望,，前提是基礎(chǔ)設(shè)施能保持建設(shè)力度。而技術(shù)手段則大有希望提高非洲基礎(chǔ)設(shè)施建設(shè)進(jìn)程的速度和效率,。

????非洲大陸的人口多達(dá)9.55億人,，是僅次于亞洲的世界第二大人口密集大陸。與其他各大洲的居民相比,，他們正在經(jīng)歷速度更快的城市化進(jìn)程,。盡管超過(guò)半數(shù)的非洲人仍然生活在貧困線以下，但按照德克薩斯大學(xué)（University of Texas）教授,，也是《非洲崛起》（Africa Rising）一書(shū)的作者維賈伊?馬哈揚(yáng)的估測(cè),，約有35%的非洲人已邁入中產(chǎn)階級(jí)。

????今天,，非洲大陸上人口逾百萬(wàn)的城市已經(jīng)有37座,。約有41%的非洲人居住在城市里，而據(jù)為聯(lián)合國(guó)（the United Nations）所做的一份報(bào)告預(yù)測(cè),，到2020年,，將有超過(guò)半數(shù)的非洲人在城市安家。這些人之所以遷往城市,，是因?yàn)樗麄兿Ｍ@得比在鄉(xiāng)村和農(nóng)場(chǎng)更高的安全感和更好的發(fā)展機(jī)會(huì),。但是他們往往發(fā)現(xiàn)，城市并沒(méi)有做好準(zhǔn)備來(lái)滿足他們的基本需求,，比如潔凈的飲水和烹煮食物的燃料,。

????建設(shè)基礎(chǔ)設(shè)施,，保證新進(jìn)入城市的居民安居樂(lè)業(yè)并能創(chuàng)造更大價(jià)值，已經(jīng)成為這些城市和國(guó)家領(lǐng)導(dǎo)人的重大責(zé)任,。

????雖然多數(shù)非洲城市的基礎(chǔ)設(shè)施十分匱乏,，但正因?yàn)槿绱耍才c私營(yíng)部門(mén)的領(lǐng)袖們才有機(jī)會(huì)建設(shè)新型的供水系統(tǒng),、電網(wǎng)和交通控制系統(tǒng),。與世界發(fā)達(dá)地區(qū)老化的基礎(chǔ)設(shè)施相比，這些系統(tǒng)會(huì)更高效,，也更節(jié)能。電子傳感器和控制器等技術(shù)可對(duì)電力進(jìn)行可變定價(jià),，對(duì)用水消耗量進(jìn)行精確計(jì)量,。與美國(guó)適應(yīng)汽車需求的大規(guī)模道路和停車場(chǎng)系統(tǒng)相比，智能交通系統(tǒng)將更好地管理非洲的交通,。

????目前,，非洲已經(jīng)在一個(gè)關(guān)鍵的基礎(chǔ)設(shè)施領(lǐng)域取得了快速發(fā)展，這就是通訊業(yè),。

????代表全球通訊業(yè)利益的全球移動(dòng)通信系統(tǒng)協(xié)會(huì)（Groupe Speciale Mobile Association (GSMA)稱,，各家無(wú)線通訊公司將在未來(lái)5年內(nèi)在撒哈拉以南非洲地區(qū)投資500億美元。一項(xiàng)由GSMA和德勤公司（Deloitte）聯(lián)合開(kāi)展的研究估測(cè),，在發(fā)展中國(guó)家,，移動(dòng)通訊滲透率每增加10%，其國(guó)內(nèi)生產(chǎn)總值（GDP）年增長(zhǎng)率就可提高1.2%,。移動(dòng)通訊滲透率是指擁有移動(dòng)通信覆蓋并直接聯(lián)接到移動(dòng)通訊系統(tǒng)的人數(shù),。

????在非洲向城市生活和現(xiàn)代經(jīng)濟(jì)體系轉(zhuǎn)型的過(guò)程中，無(wú)線通訊革命正在迎來(lái)發(fā)展的轉(zhuǎn)折點(diǎn),。在各種技術(shù)中,，無(wú)線通訊技術(shù)能夠跳過(guò)建設(shè)大量基礎(chǔ)設(shè)施的階段，從而確保獲得最快的投資回報(bào),，同時(shí)帶來(lái)提高生產(chǎn)力的最快捷途徑,。蜂窩網(wǎng)絡(luò)和最終的無(wú)線寬帶無(wú)需昂貴的物理聯(lián)接就可確保通訊、信息,、教育和金融實(shí)現(xiàn)互聯(lián),。

????The urbanization of Africa offers great hope for hundreds of millions of people -- if the infrastructure can keep up. And technology holds huge promise to make building that infrastructure faster and more efficient.

????The 955 million people in Africa -- the world's second most populous continent after Asia -- are urbanizing more rapidly than residents of any other region. While more than half Africa's population lives below the poverty line, an estimated 35% have entered the middle class according to University of Texas Professor Vijay Mahajan, author of the book, Africa Rising.

????Today there are 37 cities on the African continent with more than one million people. An estimated 41% of the people in Africa live in cities and, by 2020 more than half will, according to estimates done for the United Nations. Those people are moving to the continent's cities because they expect more security and better opportunities than they have in rural villages and farms. But often they find that cities aren't prepared to provide basic needs like clean water and fuel for cooking.

????Establishing an infrastructure that will allow newly arrived settlers to thrive and become more productive is a key responsibility for the leaders of those cities and nations.

????While infrastructure in most African cities is adversely inadequate, public and private sector leaders have an opportunity to build basic water systems, electricity grids and traffic control systems that will be much more efficient and less energy intensive than the aged infrastructure in developed parts of the world. Technology such as electronic sensors and controls would permit variable pricing for power and finely-tuned measures of water consumption. Smart transit systems could manage traffic far more efficiently than the massive road and parking-lot systems required by vehicles in the U.S., for example.

????And Africa is already moving rapidly in one key infrastructure area: communications.

????Groupe Speciale Mobile Association (GSMA) -- which represents the interests of the global communication industry -- says wireless companies will invest $50 billion in sub-Saharan Africa over the next five years. A GSMA and Deloitte study estimates that an increase of 10% in mobile penetration -- the number of people who have mobile coverage and are directly connected to the mobile system -- can increase the annual GDP growth rate up to 1.2% in a developing country.

????The wireless communications revolution is coming at a turning point in Africa's transition to urban life and a modern economic system. By bypassing the need to build extensive physical infrastructure, wireless telecommunications promise the fastest payback and quickest route to improved productivity of any technology. Cellular networks and eventually wireless broadband promise communications, information, education and finance connectivity that bypass costly physical connections.