Author:Vos, P; Wepener, V; Cyrus, DPDate:Jan 2002The purpose of the study was to verify the ability of the South African Scoring System version 4 (SASS4), to assess the health of aquatic ecosystems. The macro invertebrate community attributes of the Mhlathuze River (KwaZulu-Natal, South ...Read more
Author:Ama, Monday O; Kumar, Neeraj; Adams, FV; Sinha Ray, SuprakasDate:Sep 2018Herein, we prepared hexagonal MoO3 (h-MoO3) nanorods by homogenous co-precipitation and utilized them to fabricate a composite h-MoO3-exfoliated graphite (EG) electrode. The above composite was characterized by scanning electron microscopy, ...Read more
Author:Mwila, Martin KDate:Aug 2014Wireless technologies have been rapidly spreading all around the world and have become embedded in most of our modern technologies. Mobility, portability, low cost, and the ease of network installation are the key features that have recently ...Read more
Author:Mwila, MK; Djouani, K; Kurien, ADate:Dec 2014Localisation is one of the most important applications for wireless sensor networks since the locations of the sensor nodes are critical to both network operations and most application level tasks. Numerous techniques for localisation of ...Read more
Author:Sypu, VS; Kear, NH; Bhaumik, M; Raju, Kumar; Maity, ArjunDate:Mar 2021A hybrid nanostructure comprising NiFe2O4 nanorods and 2-naphthalene sulfonic acid (2-NSA) doped polyaniline nanotubes (NiFe2O4@PANI/NSA) has been explored as an efficient catalyst for the reduction of nitroaromatics in the aqueous medium. ...Read more
Author:Kobo, Hlabishi I; Abu-Mahfouz, Adnan MI; Hancke, Gerhard PDate:Jun 2019Software-defined wireless sensor networking (SDWSN) is a new wireless networking paradigm formed by applying software-defined networking to wireless sensor networks. Fragmentation-based distributed control system offers an efficient way of ...Read more
Author:Kleynhans, NT; Barnard, EDate:Oct 2014Automatic speech recognition (ASR) technology has matured over the past few decades and has made significant impacts in a variety of fields, from assistive technologies to commercial products. However, ASR system development is a resource ...Read more
Author:Abu-Mahfouz, Adnan MI; Hancke, GPDate:May 2013Determining the location of nodes is a key part of wireless sensor networks (WSNs). Many WSN applications require knowledge of nodes’ locations to perform their functions successfully. Several localisation algorithms rely on using all or most ...Read more
Author:Strauss, Hencharl J; Koen, W; Bollig, C; Esser, MJD; Preussler, D; Nyangaza, K; Jacobs, CobusDate:Jun 2009In this paper, researchers have demonstrated that a Ho:YLF oscillator and amplifier system can be designed in a compact setup where the pump power from an unpolarized fibre laser utilized efficiently. The system produced more than 20 mJ energy ...Read more
Author:Davel, MH; Barnard, EDate:Oct 2004Bootstrapping techniques have significant potential for the efficient generation of linguistic resources such as electronic pronunciation dictionaries. The authors describe a system and an approach to bootstrapping for the development of such ...Read more
Author:Davel, MH; Barnard, EDate:Oct 2004The authors focus on factors related to the underlying rule-extraction algorithms, and demonstrate variants of the Dynamically Expanding Context algorithm, which are beneficial for this application. They show that continuous updating of the ...Read more
Author:McDonald, Andre M; Van Wyk, MADate:Sep 2018A novel random signal generator design that accommodates the specification of both the sample probability distribution as well as the signal bandwidth is presented in this paper. The generator achieves a high degree of computational efficiency ...Read more
Author:Davel, MH; Van Heerden, C; Kleynhans, N; Barnard, EDate:Aug 2011Spoken recordings that have been transcribed for human reading (e.g. as captions for audiovisual material, or to provide alternative modes of access to recordings) are widely available in many languages. Such recordings and transcriptions ...Read more
Author:Koen, W; Jacobs, Cobus; Collett, O; Esser, MJDDate:Oct 2013A thulium fiber laser pumped Ho:YLF laser delivering 45.1 W in a near diffraction limited beam when pumped with 84.7 W is demonstrated. The optical-to-optical efficiency of 53 % compares favorably with similar Ho:YAG lasers.Read more
Author:Koen, W; Jacobs, Cobus; Collett, ODate:Jul 2013Laser sources emitting in the 2 micron region is of particular interest for applications in medicine, remote sensing (LIDAR) and directed infra-red countermeasures. In addition, they are also desirable pump sources for efficient optical ...Read more
Author:Oldach, KH; Morgenstern, A; Rother, S; Girgi, M; O'Kennedy, Maretha M; Lorz, HDate:Jul 2001The authors report an in vitro culture system that provides reliable, highly efficient regeneration from immature embryos of pearl millet [Pennisetum glaucum (L.) R. Br.] and sorghum [Sorghum bicolor (L.) Moench]. Immature embryos were isolated ...Read more
Author:Rasheed, J; Wardak, AB; Abu-Mahfouz, Adnan MI; Umer, T; Yesiltepe, M; Waziry, SDate:Oct 2022Granting smart device consumers with information, simply and quickly, is what drives quick response (QR) codes and mobile marketing to go hand in hand. It boosts marketing campaigns and objectives and allows one to approach, engage, influence, ...Read more
Author:Abu-Mahfouz, Adnan MI; Hancke, GPDate:2009Elliptic curve cryptosystems like others public key encryption schemes, require computing a square roots modulo a prime number. The arithmetic operations in elliptic curve schemes over Optimal Extension Fields (OEF) can be efficiently computed ...Read more