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Access to information, and communications technologies has become crucial to a sustainable agenda of economic development, and poverty reduction, and yet access remains concentrated in a few regions and population groups, with the contours of this new \" digital divide \" closely following, and supplementing existing income, and economic divides. However, technological innovations, economic pressures, and regulatory reforms, are making access to information, and communications technologies more affordable, and, providing opportunities to close the digital divide. This discussion paper outlines a number of policy, and regulatory measures, including incentives to attract investors to high cost, or challenging areas, that can be used under different scenarios, to close the digital divide. While Bank Group experience shows an increasing number of projects with specific universal access components, this paper proposes alternatives for Bank Group support for universal access policies, through an appropriate mix of technical assistance, and investments.

Over the past ten years, private-sector-led growth has revolutionized access to telecommunications. Every region of the developing world benefitted in terms of investment and rollout. This revolution would have been impossible without government reform and oversight. Advanced information and communication infrastructure (ICI) are increasingly important to doing business in a globalizing world. Governments, enterprises, civil society, workers, and poor populations in the developing countries need more affordable access. This report proposes strategies that governments can carry out to attract private investment and ensure the continued evolution and spread of information and communication infrastructure. These strategies encompass more than sector policy alone, for investment decisions are based on a wide range of factors including, for example, the roles played by financial sector development and the broader investment environment. The strategies also include potential public sector investments that can catalyze ICI rollout in subsectors where the private sector is not prepared to intervene on its own.

In many parts of the world, knowledge is being put to work to accelerate and deepen the development process, promoting innovation and helping to generate wealth and jobs. This book discusses advanced development strategies that take into account education, information and communication technology, infrastructure, innovation, and the prerequisite economic and institutional regimes.

With some 6 billion mobile subscriptions in use worldwide, around three-quarters of the world's inhabitants now have access to a mobile phone. Mobiles are arguably the most ubiquitous modern technology: in some developing countries, more people have access to a mobile phone than to a bank account, electricity, or even clean water. Mobile communications now offer major opportunities to advance human development from providing basic access to education or health information to making cash payments to stimulating citizen involvement in democratic processes. The developing world is 'more mobile' than the developed world. In the developed world, mobile communications have added value to legacy communication systems and have supplemented and expanded existing information flows. However, the developing world is following a different, 'mobile first' development trajectory. Many mobile innovations such as multi-SIM card phones, low-value recharges, and mobile payments have originated in poorer countries and are spreading from there. New mobile applications that are designed locally and rooted in the realities of the developing world will be much better suited to addressing development challenges than applications transplanted from elsewhere. In particular, locally developed applications can address developing-country concerns such as digital literacy and affordability. This 2012 edition of the World Bank's information and communications for development report analyzes the growth and evolution of mobile telephony, and the rise of data-based services delivered to handheld devices, including apps. The report explores the consequences for development of the emerging 'app economy.' It summarizes current thinking and seeks to inform the debate on the use of mobile phones for development. This report looks at key ecosystem-based applications in agriculture, health, financial services, employment, and government, with chapters devoted to each. Avec environ six millions d’abonnements actifs dans le monde, ce sont trois quarts des habitants du globe qui ont désormais accès au téléphone mobile. Les téléphones mobiles constituent sans doute la technologie moderne la plus répandue : dans certains pays en développement l’on compte un nombre plus élevé de personnes ayant accès à un téléphone portable qu’à un compte bancaire, à l’électricité ou même à l’eau potable. Les systèmes de communications mobiles présentent des possibilités énormes de faire avancer le développement humain, à commencer par l’élargissement de l’accès à l’éducation de base ou aux informations sanitaires, en passant par les paiements en espèces et l’incitation du citoyen à s’engager dans les processus démocratiques. Les applications mobiles donnent de l’autonomie à leurs utilisateurs et contribuent à améliorer leur qualité de vie et leurs moyens d’existence tout en renforçant l’ensemble de l’économie. Le rapport montre que les applications mobiles permettent non seulement d’autonomiser les individus, mais aussi d’avoir des répercussions positives sur la croissance, l’entrepreneuriat et la productivité à l’échelle de l’économie toute entière. L’édition 2012 du rapport Information et communications au service du développement analyse la croissance et l’évolution de la téléphonie mobile et la montée en puissance des services basés sur les données acheminés vers les appareils portatifs, notamment les applications. Le rapport examine les conséquences de l’économie émergente des applications sur le développement. Il fait la synthèse de la réflexion actuelle et tente d’enrichir le débat sur l’utilisation du téléphone mobile au service du développement. Il passe en revue des applications clés du secteur dans les domaines de l’agriculture, la santé, les services financiers, l’emploi et l’administration publique ; des chapitres entiers sont consacrés à chacun de ces domaines. Ce n’est plus le téléphone lui-même qui retient l’attention, mais plutôt la manière dont il est utilisé, ainsi que le contenu et les applications auxquels le téléphone mobile permet d’accéder.

The study documents, and reviews the Chilean experience in rural telecommunications, by focusing on the principles, practical organization, basic design, and outstanding issues for extension of a more advanced form of approach to communication, and access to information. It examines in depth the results, and success factors of the Telecommunications Development Fund, established in 1994, a success largely due to the extensive reliance on market forces to determine, and allocate subsidies, to minimal regulatory intervention, and relatively simple processing. The design of the Fund proved robust, and remains the leading example of a cost-effective solution to reduce access gaps in basic communication in emerging economies. However, questions remain on the sustainability of services for the long run, on how to support the small, but still excluded rural population, and on potential, further needs in urban areas.

SummaryTelephone call intervention did not improve alendronate persistence in Fracture Liaison Service (FLS) patients in this study. A bone turnover marker cut-off point for alendronate persistence is proposed for individual FLS patients.IntroductionFLS aims to prevent subsequent fractures, which should include improving patients’ persistence with prescribed oral bisphosphonates. We studied the influence of telephone calls and the predictive value of changes in bone turnover markers (BTMs) for evaluating persistence with alendronate.MethodsPostmenopausal women with a recent fracture and osteoporosis who started alendronate were randomized to receive three phone calls (PC) (after 1, 4, and 12 months) or no phone calls (no PC). s-CTX and P1NP were measured at baseline and after 3, 6, 9, and 12 months. As a reference group, 30 postmenopausal osteopenic patients with a recent fracture were analyzed as well. Persistence was assessed using the Dutch National Switch Point Pharmacies-GPs database and cross-referenced with PC, no PC, and BTM changes. Cut-off values of BTMs were calculated based on least significant change (LSC) and also on underrunning median values of the untreated osteopenic postmenopausal reference group with a recent fracture.ResultsOut of 119 patients, 93 (78%) completed 12 months follow-up (45 PC and 48 no PC). Mean age was 69 years. Persistence was similar in PC and no PC participants. The cut-off value > 29% (< 415 ng/L) as LSC of s-CTX and > 36% (< 53.1 μg/L) as LSC of P1NP was determined optimally showing alendronate persistence after 1 year (being 93 and 88%, respectively).ConclusionsIn this context, telephone calls did not improve persistence. In around 90% of patients, 1-year alendronate persistence was confirmed by achieving LSC of s-CTX and of P1NP at 12 months.

Despite the importance of predicting evacuation mobility dynamics after large scale disasters for effective first response and disaster relief, our general understanding of evacuation behavior remains limited because of the lack of empirical evidence on the evacuation movement of individuals across multiple disaster instances. Here we investigate the GPS trajectories of a total of more than 1 million anonymized mobile phone users whose positions were tracked for a period of 2 months before and after four of the major earthquakes that occurred in Japan. Through a cross comparative analysis between the four disaster instances, we find that in contrast to the assumed complexity of evacuation decision making mechanisms in crisis situations, an individual's evacuation probability is strongly dependent on the seismic intensity that they experience. In fact, we show that the evacuation probabilities in all earthquakes collapse into a similar pattern, with a critical threshold at around seismic intensity 5.5. This indicates that despite the diversity in the earthquakes profiles and urban characteristics, evacuation behavior is similarly dependent on seismic intensity. Moreover, we found that probability density functions of the distances that individuals evacuate are not dependent on seismic intensities that individuals experience. These insights from empirical analysis on evacuation from multiple earthquake instances using large scale mobility data contributes to a deeper understanding of how people react to earthquakes, and can potentially assist decision makers to simulate and predict the number of evacuees in urban areas with little computational time and cost. This can be achieved by utilizing only the information on population density distribution and seismic intensity distribution, which can be observed instantaneously after the shock.

Estimating and mapping population distributions dynamically at a city-wide spatial scale, including those covering suburban areas, has profound, practical, applications such as urban and transportation planning, public safety warning, disaster impact assessment and epidemiological modelling, which benefits governments, merchants and citizens. More recently, call detail record (CDR) of mobile phone data has been used to estimate human population distributions. However, there is a key challenge that the accuracy of such a method is difficult to validate because there is no ground truth data for the dynamic population density distribution in time scales such as hourly. In this study, we present a simple and accurate method to generate more finely grained temporal-spatial population density distributions based upon CDR data. We designed an experiment to test our method based upon the use of a deep convolutional generative adversarial network (DCGAN). In this experiment, the highest spatial resolution of every grid cell is 125125 square metre, while the temporal resolution can vary from minutes to hours with varying accuracy. To demonstrate our method, we present an application of how to map the estimated population density distribution dynamically for CDR big data from Beijing, choosing a half hour as the temporal resolution. Finally, in order to cross-check previous studies that claim the population distribution at nighttime (from 8 p.m. to 8 a.m. on the next day) mapped by Beijing census data are similar to the ground truth data, we estimated the baseline distribution, first, based upon records in CDRs. Second, we estimate a baseline distribution based upon Global Navigation Satellite System (GNSS) data. The results also show the Root Mean Square Error (RMSE) is about 5000 while the two baseline distributions mentioned above have an RMSE of over 13,500. Our estimation method provides a fast and simple process to map people’s actual density distributions at a more finely grained, i.e., hourly, temporal resolution.

During the past few decades, technologies such as remote sensing, geographical information systems, and global positioning systems have transformed the way the distribution of human population is studied and modeled in space and time. However, the mapping of populations remains constrained by the logistics of censuses and surveys. Consequently, spatially detailed changes across scales of days, weeks, or months, or even year to year, are difficult to assess and limit the application of human population maps in situations in which timely information is required, such as disasters, conflicts, or epidemics. Mobile phones (MPs) now have an extremely high penetration rate across the globe, and analyzing the spatiotemporal distribution of MP calls geolocated to the tower level may overcome many limitations of census-based approaches, provided that the use of MP data is properly assessed and calibrated. Using datasets of more than 1 billion MP call records from Portugal and France, we show how spatially and temporarily explicit estimations of population densities can be produced at national scales, and how these estimates compare with outputs produced using alternative human population mapping methods. We also demonstrate how maps of human population changes can be produced over multiple timescales while preserving the anonymity of MP users. With similar data being collected every day by MP network providers across the world, the prospect of being able to map contemporary and changing human population distributions over relatively short intervals exists, paving the way for new applications and a near real-time understanding of patterns and processes in human geography.

HighlightsA core–sheath structured phase change nanocomposite (PCN) with aligned and overlapping interconnected BNNS networks were successfully fabricated.The PCN has an ultrahigh in-plane thermal conductivity (28.3 W m−1 K−1), excellent flexibility and high phase change enthalpy (101 J g−1).The PCN exhibits intensively potential applications in the thermal management of 5G base stations and thermoelectric generators.Thermal management has become a crucial problem for high-power-density equipment and devices. Phase change materials (PCMs) have great prospects in thermal management applications because of their large capacity of heat storage and isothermal behavior during phase transition. However, low intrinsic thermal conductivity, ease of leakage, and lack of flexibility severely limit their applications. Solving one of these problems often comes at the expense of other performance of the PCMs. In this work, we report core–sheath structured phase change nanocomposites (PCNs) with an aligned and interconnected boron nitride nanosheet network by combining coaxial electrospinning, electrostatic spraying, and hot-pressing. The advanced PCN films exhibit an ultrahigh thermal conductivity of 28.3 W m−1 K−1 at a low BNNS loading (i.e., 32 wt%), which thereby endows the PCNs with high enthalpy (> 101 J g−1), outstanding ductility (> 40%) and improved fire retardancy. Therefore, our core–sheath strategies successfully balance the trade-off between thermal conductivity, flexibility, and phase change enthalpy of PCMs. Further, the PCNs provide powerful cooling solutions on 5G base station chips and thermoelectric generators, displaying promising thermal management applications on high-power-density equipment and thermoelectric conversion devices.