Multiple-antenna-aided OFDM employing genetic-algorithm-assisted minimum bit error rate multiuser detection

The family of minimum bit error rate (MBER) multiuser detectors (MUD) is capable of outperforming the classic minimum mean-squared error (MMSE) MUD in terms of the achievable bit-error rate (BER) owing to directly minimizing the BER cost function. In this paper,wewill invoke genetic algorithms (GAs) for finding the optimum weight vectors of the MBER MUD in the context of multiple-antenna-aided multiuser orthogonal frequency division multiplexing (OFDM) .We will also show that the MBER MUD is capable of supporting more users than the number of receiver antennas available, while outperforming the MMSE MUD

Curvature estimates for submanifolds in warped products

We give estimates on the intrinsic and the extrinsic curvature of manifolds that are isometrically immersed as cylindrically bounded submanifolds of warped products. We also address extensions of the results in the case of submanifolds of the total space of a Riemannian submersion.Comment: 21 page

Role of chondroitin sulfate proteoglycans (CSPGs) in synaptic plasticity and neurotransmission in mammalian spinal cord.

Chronic unilateral hemisection (HX) of the adult rat spinal cord diminishes conduction through intact fibers in the ventrolateral funiculus (VLF) contralateral to HX. Intraspinal injections of Chondroitinase-ABC, known to digest chondroitin sulfate proteoglycans (CSPGs) in the vicinity of injury, prevented this decline of axonal conduction. This was associated with improved locomotor function. We further injected three purified CSPGs into the lateral column of the uninjured cord at T10: NG2 and neurocan, which increase in the vicinity of a spinal injury, and aggrecan, which decreases. Intraspinal injection of NG2 acutely depressed axonal conduction through the injection region in a dose dependent manner. Similar injections of saline, aggrecan, or neurocan had no significant effect. These results identify a novel acute action of CSPGs on axonal conduction in spinal cord, and suggest that antagonism of proteoglycans reverses or prevents the decline of axonal conduction, in addition to stimulating axonal growth

Digitizing radiology films using flat-bed scanner and produce a multimedia digital teaching file in musculoskeletal radiology

Digital images have been long established in radiology department. Despite this, most radiology teaching films has been film-based. The drawback of this conventional system is that it consumed space, only one user can use at any one time and expensive. Analogue radiology films were digitized using flatbed scanner with transparency adaptor and digital camera. Digital-based teaching files using personal computer (PC) should be encouraged as this will reduce space for storing, can be distributed without much cost, inexpensive, many users can use at the same time and others can use even though at different place using the internet. The teaching file was prepared using HyperText Mark-up Language (HTML) as this can be used using any web browser. It is now available in University Sains Malaysia, Kelantan Campus Branch (USMKCK) intranet

A Suggested Model for Studying Technopreneurial Intention in Malaysia

Technology entrepreneurship or technopreneurship is a future trend in the era of industrial revolution 4.0 (IR 4.0). Technopreneurship requires innovative, young and information-communication technology (ICT) savvy individuals. Many countries around the world, including Malaysia, has put in a lot of efforts to develop entrepreneurial skills among youngsters especially the students. However, developing competitive young technopreneurs remains challenging in Malaysia. For instance, Malaysians scored low in several entrepreneurial behaviors and attitudes identified by Global Entrepreneurial Monitor (GEM). Furthermore, not many Malaysians have started new businesses and the country recorded a low and declining early-stage entrepreneurship rate. Moreover, university students were not showing great interest in becoming entrepeneurs during thier tertiary eduation. The future of IR 4.0 is unpredictable and full of challenges. Thus, the unattended issue of developing young and competitive technopreneurs will affect the ways Malaysians confront the unknown future. In the entrepreneurship literature, technological capability aspects and psychological aspects such as entrepreneurial orientaion (EO) and entrepreneurial intention are under-researched. Therefore, based on Bandura’s self-efficacy theory and individual EO (IEO) concept, this study proposes a model to explain the direct and indirect influence of ICT self-efficacy and IEO on technopreneurial intention. The potential contribution of this study is two-fold. Literally, it develops a new model for investigating technopreneurial intention. Practically, it provides insights on the implementation of policies in developing competitive entrepreneurial graduates, creating technology innovative individuals and transforming Malaysia into a knowledge economy. It also identifies the types of ICT capabilities that are crucial in developing innovative and entrepreneurial human capital. Additionally, it helps to strengthen and increase the particiaption of youngsters in the economy through technology entrepreneurial activities.     Keywords: entrepreneurial intention, model, students, technolog