the environment of mobile radio propagation 71

... modelling of the radio propagation channel are amongst themost important and fundamental The propagation channel is the principalcontributor to many of the problems and limitations that beset mobile radiosystems ... writing of the Publisher, with the exception of any material supplied speci®cally for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the publication. ... original theme and not beconstrained by considerations of one type of system, important though it may be.The really major change, however, is the addition of two new chapters at the end of the book...

Ngày tải lên: 28/10/2013, 11:15

... know the re¯ection coecient 2.3.1 The re¯ection coecient of the Earth The amplitude and phase of the ground-re¯ected wave depends on the re¯ection coecient of the Earth at the point of re¯ection ... within line-of-sight of each other, above the surface of the Earth.We will consider two cases, ®rstly propagation over a spherical re¯ecting surface and secondly when the distance between the antennas ... [3]: D ' 1 ‡r 2d1d2 e…h0T‡ h0R† …2:20† The value of D can be of the order of 0.5, so the e€ect of the ground-re¯ected wave is considerably reduced 2.3.3 Propagation over a plane re¯ecting surface...

Ngày tải lên: 07/11/2013, 03:15

... near the level of noise – Interference can take place • To reduce the interference of noise – Boost the strength of the signal – Use of filters when receiving the signal • Attenuation – A loss of ... Understanding Radio Frequency Communications Objectives • List the components of a radio system • Describe how different factors affect the design of a radio system • Explain the radio frequency ... Strength • Strength of the signal in a radio system – Must be sufficient for the signal to reach its destination • With enough amplitude to be picked up by the antenna • And for the information to...

Ngày tải lên: 13/09/2012, 10:52

... 2The Environment ofSchizophrenia There is now a body of evidence suggesting that the occurrence andcourse of schizophrenia are affected by a variety of environmental factors The Environment of ... changes in the size of different parts of thebrain, especially in the temporal lobes The fluid-filled spaces (theventricles) in the interior of the temporal lobes are often enlargedand the temporal ... people with the illness is due to inheritance rather than environment The children ofpeople with schizophrenia have the same increased prevalence ofthe illness whether they are raised by their biological...

Ngày tải lên: 14/03/2014, 22:20

... usefulness of mobile banking services has a positive impact on the use of the services H3: Perceived of ease of use of mobile banking services has a positive impact to the use of the services ... services in Hanoi And then identify the major factors affecting the use of the services of customer in the studied area; (iii) to suggest the main recommendations of the policy for the mobile banking ... basis of the theory of consumer behavior generally and Theory of Technology Acceptance Model (TAM) in particular; (ii) providing the research model of consumer's behavior in the use of mobile...

Ngày tải lên: 20/08/2014, 22:08

... Trang 1A thesis presented to the faculty of the Center for International Studies of Ohio University Trang 2This thesis titled The Social-cultural and Economic Implications of the Presence of Mobile ... benefit from mobile phone adoption The purpose of the study is to better understand the social-cultural and economic phenomena that occur in the OMW families as the result of the presence of mobile ... At the national level, Sukamdi et al (2004) points out that from 1983 to 1999 the growth of remittances was greater than the growth of the number of migrants, showing the positive outcome of the...

Ngày tải lên: 14/05/2015, 10:07

... With the emergence and fast growing of smart mobile phones and mobile application business, the piracy of these new fashioned digital good follows The piracy phenomenon of these new types of digital ... until the launch of Apple‟s App Store1that the mobile application business started to catch the eyes of the public Since the App Store‟s opening on July 10, 2008, there also emerged many other ... also increase the price if they think their applications are attractive enough and the rise of price will not harm the revenue agei,t is the days from the official release date of application...

Ngày tải lên: 13/10/2015, 15:55

... (when mobile-density will be around 45) During the year 2015-16, there will be 71 mobile phones for 100 people in the country Analysis show that the no of mobile phones will exceed the no of people ... level of 120 mobile phones per 100 inhabitants: ) ( 1639 0 4 16 Trang 15Rate of growth of mobile-densityThe analysis reveals that the inflection point (the maximum growth rate point) of the curve ... study, the growth of the mobile phone and mobile-density in India has been analyzed using S-shaped growth curve models The result shows that the Gompertz model adequately describes the path of mobile...

Ngày tải lên: 05/12/2016, 17:04

... increase the security of mobile authentication without compromising memorability orusability These proof-of-concept schemes demonstrate the concept of Multi-DimensionalAuthentication, a method of using ... skipped over the invention of the mouse, the gradual improvement ofthe high resolution color display, and the general advancement of computing power Fromthe user’s perspective, authentication ... by the day Thefirst, and often only, defense against attackers who get physical access to the device isthe lock screen: the authentication task required to gain access to the device To datemobile...

Ngày tải lên: 02/04/2018, 10:02

... technology as of March 2012 As you can see from the data, the use of mobile banking correlates with age, income, and education USE OF MOBILE BANKING IS CORRELATED BY AGE Trang 20The Power of Mobile ... realm Trang 29The Power and Potential of Mobile Bankingof personal fi nancial services Mobile is the future Tablet sales in the last three years have outstripped the sales of PCs Cost of network ... populations of customers Who are those new customers, and where do they live? In the United States, most of Europe, and parts of the Middle East,they are the millennials, the generation of digital...

Ngày tải lên: 10/10/2019, 16:02

... industry and the uptake of mobile apps in Dubai The study is quite relevant particularly in the context of the Year of Innovation (2015) in UAE The Year of Innovation has certainly paved the way for ... Study of the Use of Mobile Apps and its Implications for Internal Business Processes in Healthcare Organizations in Dubai Submitted in partial fulfilment of the requirement of the degree of Masters ... aware of the vast number of patient-facing mobile apps that help inform the public about certain diseases and track their health conditions, this paper aims to explore the utilization of mobile...

Ngày tải lên: 06/12/2019, 11:25

... declare, the dissertation entitled “The Feasibility of Mobile Telework / Virtual Office: A Study of 3PL firms in India” is submitted in partial fulfilment of the requirements for the award of the ... presents the background and the definition of research problem, the necessity of the study and the interest to research this particular topic It lays out clearly the aim of the study, the objectives ... there exist several point of view of virtualisation of an organisation and one of them is the level of abstraction (reality – abstraction) the first level of virtualisation being a creation of...

Ngày tải lên: 09/01/2020, 18:01

... industry and the uptake of mobile apps in Dubai The study is quite relevant particularly in the context of the Year of Innovation (2015) in UAE The Year of Innovation has certainly paved the way for ... Study of the Use of Mobile Apps and its Implications for Internal Business Processes in Healthcare Organizations in Dubai Submitted in partial fulfilment of the requirement of the degree of Masters ... aware of the vast number of patient-facing mobile apps that help inform the public about certain diseases and track their health conditions, this paper aims to explore the utilization of mobile...

Ngày tải lên: 09/01/2020, 18:45

... declare, the dissertation entitled “The Feasibility of Mobile Telework / Virtual Office: A Study of 3PL firms in India” is submitted in partial fulfilment of the requirements for the award of the ... presents the background and the definition of research problem, the necessity of the study and the interest to research this particular topic It lays out clearly the aim of the study, the objectives ... there exist several point of view of virtualisation of an organisation and one of them is the level of abstraction (reality – abstraction) the first level of virtualisation being a creation of...

Ngày tải lên: 15/01/2020, 19:26

... declare, the dissertation entitled “The Feasibility of Mobile Telework / Virtual Office: A Study of 3PL firms in India” is submitted in partial fulfilment of the requirements for the award of the ... presents the background and the definition of research problem, the necessity of the study and the interest to research this particular topic It lays out clearly the aim of the study, the objectives ... there exist several point of view of virtualisation of an organisation and one of them is the level of abstraction (reality – abstraction) the first level of virtualisation being a creation of...

Ngày tải lên: 26/04/2020, 22:14

... Compared to the topic of author Le Thi Hong Van refers to the work of customer care in the field of software, the thesis of author Le Van Tu refers to the care of customers in the field of telecommunications, ... level of preparation, according to the relationship between the observer and the observed, according to the purpose of grasping the nature of the observed object, according to the purpose of treatment ... map Thereby showing the growth of the telecommunications industry in Vietnam Especially when there are quite a lot of competitors, the research on the quality of services provided to customers of...

Ngày tải lên: 06/09/2020, 18:34

... Rationale for the study 1 2 Aims of the study 2 3 Research questions 3 4 Scope of the study 3 5 Significance of the study 3 6 The structure of the thesis 4 CHAPTER 2: LITERATURE REVIEW AND THEORETICAL ... inspirational factors urging the researcher to conduct the study 2 Aims of the study This research aims at: (1) reporting in details the process and result of the use of the mobile application called ... of the previous studies relating mobile assisted language learning and the application of mobile applications to teaching and learning English Furthermore, the results of several studies on the...

Ngày tải lên: 09/04/2021, 16:13

... Rationale for the study 1 2 Aims of the study 2 3 Research questions 3 4 Scope of the study 3 5 Significance of the study 3 6 The structure of the thesis 4 CHAPTER 2: LITERATURE REVIEW AND THEORETICAL ... inspirational factors urging the researcher to conduct the study 2 Aims of the study This research aims at: (1) reporting in details the process and result of the use of the mobile application called ... of the previous studies relating mobile assisted language learning and the application of mobile applications to teaching and learning English Furthermore, the results of several studies on the...

Ngày tải lên: 13/04/2021, 12:09

... declare, the dissertation entitled “The Feasibility of Mobile Telework / Virtual Office: A Study of 3PL firms in India” is submitted in partial fulfilment of the requirements for the award of the ... objectives and the hypothesis to be tested 15 1.3 Approaches 3 to the dissertation 17 1.4 The organisation of the research 18 1.5 The scope and limitations of the research ... added more relevance to the findings The sample populationdoes not justify the representation of the entire 3pl service provider firms The study Trang 11The Feasibility of Mobile Telework/Virtual...

Ngày tải lên: 04/05/2021, 19:27

... Rationale for the study 1 2 Aims of the study 2 3 Research questions 3 4 Scope of the study 3 5 Significance of the study 3 6 The structure of the thesis 4 CHAPTER 2: LITERATURE REVIEW AND THEORETICAL ... inspirational factors urging the researcher to conduct the study 2 Aims of the study This research aims at: (1) reporting in details the process and result of the use of the mobile application called ... of the previous studies relating mobile assisted language learning and the application of mobile applications to teaching and learning English Furthermore, the results of several studies on the...

Ngày tải lên: 16/07/2021, 17:15