This paper aims to examine factors affecting subscribers’ intention towards using 3G mobile service. Cross sectional data were collected from 100 respondents through a survey. Data were then analyzed by means of multiple regression analysis. The findings verified the research hypotheses, and confirmed that Perceived Usefulness, Perceived Ease of Use and Attitude are jointly responsible in deter...

Treatment of 10-bromoanthralin (1) with several thiophenols (2) gave the corresponding 10-arylthioanthralins (3) in high yields. Oxidation of thioanthralins (3a-c) and (3k-m) using an excess of m-chloroperbenzoic acid gave the corresponding sulfones (4a-c) and (4k-m) in good yields. Oxidation of thioanthralins (3d-f) gave a mixture of the corresponding sulfones (4d-f) and anthralin-10,10'-d...

The purpose of this paper is to investigate the accuracy of PESQ and 3SQM in predicting voice quality over live 3G networks. We set up an Asterisk-based testbed to measure voice quality over 3G mobile networks. 192 experiments with speech samples from the ITU-T database were recorded via 3G mobile phones and the results of the objective measurements were analyzed. We further selected 30 samples...

A year ago, everyone was talking about the great opportunities for 3G, and accessing the Internet from one's mobile terminal. Today 3-G network has grown up. Mobile-commerce (m-commerce) systems have been developed at a significant rate in recent years. M-commerce can be viewed as a subset of e-commerce and refers to transaction with monetary value that is conducted via a mobile network. 3-G ba...

Wireless telecommunications started as an offshoot of wireline telephony and with the absence of global standards resulted in regional standardization. Two major mobile telecommunication standards have dominated the global wireless market, namely, TDMA/CDMA developed by TIA in North America and GSM developed by ETSI in Europe. As we move toward 3 generation wireless, there is a need to develop ...

Wireless telecommunications started as an offshoot of wireline telephony and with the absence of global standards resulted in regional standardization. Two major mobile telecommunication standards have dominated the global wireless market, namely, TDMA/CDMA developed by TIA in North America and GSM developed by ETSI in Europe. As we move toward 3 generation wireless, there is a need to develop ...

Wistar rats were successively reared in cold at 5 degrees C from 1969 to 1984. The historical changes observed in these rats were reported. The cold-adapted rats reared in cold for 8 to 11 successive generations (C8-11G) were examined on their cold tolerance and non-shivering thermogenesis. C8-11G rats showed greater nonshivering thermogenesis than that of the warm-adapted control group (W), an...

The anti-Trypanosoma cruzi activity of 5-nitro-2-furfuriliden derivatives as well as the cytotoxicity of these compounds on J774 macrophages cell line and FN1 human fibroblast cells were investigated in this study. The most active compounds of series I and II were 4-butyl-[N'-(5-nitrofuran-2-yl) methylene] benzidrazide (3g; IC50=1.05μM±0.07) and 3-acetyl-5-(4-butylphenyl)-2-(5-nitrofuran-2-yl)-...