Global systems mobile telecommunications (GSM) as an instrument for sustainable livelihood of urban elderly
نویسندگان
چکیده
منابع مشابه
Global system for mobile communications (GSM)
This paper describes the early history of GSM, who founded it, and why it was founded. Some services of GSM will be described like SMS, and the emergency call service. The network layout of GSM, and the layers of the protocol will also be described. Introduction GSM was conceived in the early 1980’s by the study group: Groupe Spécial Mobile. GSM had some ambitious goals, some were met, and some...
متن کاملnano-rods zno as an efficient catalyst for the synthesis of chromene phosphonates, direct amidation and formylation of amines
چکیده ندارد.
Future Mobile Telecommunications Systems
In this paper, we review 2nd and 3rd generation wireless telephony systems, both in terms of technology and service concepts. We point out some of the technical and service issues that may a ect the functionality and performance from the user point of view. In particular, we focus on one technical and one service concept important for long term success of 3rd generation systems: transmit divers...
متن کاملSustainable Urban Systems
This special issue demonstrates how practical solutions to the development of sustainable cities can be achieved through studying urban metabolism, urban ecology, city carbon and water footprints, the dynamics of city growth, and the interdependency between social actors, institutions, and biophysical system flows. than half the world’s people and about 80% of those in developed nations live in...
متن کاملUrban traffic-related determinants of health questionnaire (UTDHQ): an instrument developed for health impact assessments
Background :Traffic and transport is a substantial part of a range of economic, social and environmental factors distinguished to have impact on human health. This paper is a report on a preliminary section of a Health Impact Assessment (HIA) on urban traffic and transport initiatives, being conducted in Sanandaj, Iran. In this preliminary study, the psychometric properties of Urban Traffic r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Global Journal of Social Sciences
سال: 2007
ISSN: 1596-6216
DOI: 10.4314/gjss.v5i2.22809