Besides the business enterprises in Bandundu province that use small-scale logging permits (PCAs) illegally, there is a national artisanal sector composed of individual chainsaw millers who supply the domestic market and certain neighbouring countries. This sector is still essentially informal. Our year-long monitoring of markets and transiting points for chainsaw timber brought out the substantial development of this activity over the last 15 years. At present more than a million cubic meters of chainsaw timber are produced in DRC every year, of which 85% is to meet the national demand. The production in Roundwood Equivalents of chainsaw timber – estimated at 3.4 million cubic metres per annum – is 13 times higher than the total formal production of wood products in DRC. The domestic markets of Kinshasa and eastern DRC generate sales of over 100 millions US dollars per year and yield profits estimated at 25 million dollars. The local populations benefit most from chainsaw milling and receive close to 50 million US dollars per year. As for job creation, the rural and urban artisanal timber production sectors combined offered at least 25 000 direct jobs in the country.
This book provides an in-depth guide to femtocell technologies In this book, the authors provide a comprehensive and organized explanation of the femtocell concepts, architecture, air interface technologies, and challenging issues arising from the deployment of femtocells, such as interference, mobility management and self-organization. The book details a system level simulation based methodology addressing the key concerns of femtocell deployment such as interference between femto and macrocells, and the performance of both femto and macrocell layers. In addition, key research topics in interference modeling and mitigation, mobility management and Self-Organizing Network (SON) are highlighted. The authors also introduce HNB/HeNB standardization in 3GPP.. Furthermore, access methods (closed, open and hybrid), applications, timing synchronization, health issues, business models and security are discussed. The authors also provide a comparison between femtocells and other indoor coverage techniques such as picocells, repeaters, distributed antenna systems and radio over fiber. Lastly, both CDMA and OFDMA based femtocells are covered. Key Features: Provides a comprehensive reference on femtocells and related topics Offers the latest research results on femtocells based on simulation and measurements Gives an overview of indoor coverage techniques such as picocells, repeaters, distributed antenna systems, radio over fiber and femtocells Includes chapters on femtocell access network architecture, air interface technologies (GSM, UMTS, HSPA, WiMAX and LTE), femtocell simulation, interference analysis and mitigation in femto/macrocell networks, mobility management in femto/macrocell networks, femtocell self-organization and other key challenges such as timing synchronization and security faced by femtocell deployment Points to over 240 references from 3GPP, The Femto Forum, journals and conference proceedings This book will be an invaluable guide for RF engineers from operators, R&D engineers from femtocells hardware manufacturers, employees from regulatory bodies, radio network planners, academics and researchers from universities and research organizations. Students undertaking wireless communications courses will also find this book insightful.
Bien sûr que je voulais faire du cinéma. Je n’entendais pas rester stagiaire. J’avais un plan. J’allais inopinément apparaître dans la nudité de mon être exceptionnel. J’allais me faire repérer. Ainsi, quand la cinéaste arriverait, je me lèverais, elle tournerait la tête vers moi, marquerait un temps d’arrêt (stupeur oblige), je ferais semblant de ne rien noter, exagérant mon naturel, elle me regarderait comme on contemple un phénomène, m’imaginerait instantanément dans son cadre et, sans plus de détour, me proposerait un rôle.
This will help us customize your experience to showcase the most relevant content to your age group
Please select from below
Login
Not registered?
Sign up
Already registered?
Success – Your message will goes here
We'd love to hear from you!
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.