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Now showing items 2968-2987 of 5732

Jammer signal effectiveness against a conical-scan missile seeker

Author: Malatji, Tsholofelo M Date: Sep 2017 Infrared (IR) guided missiles remain a threat to both military and civilian aircraft, and as such, the development of effective countermeasures against this threat remains vital. A simulation has been developed to assess the effectiveness of ... Read more
Japanese-South African collaboration to mitigate seismic risks in deep gold mines

Author: Ogasawara, H ; Durrheim, RJ ; Nakatani, M ; Yabe, Y ; Milev, A ; Cichowicz, A ; Kawakata, H ; Moriya, H ; JST-JICA SA research group Date: Sep 2009 Mining-induced seismicity poses a hazard to workers in deep South African mines, while natural earthquakes pose a hazard to people living in Japan and other regions of the world that are close to plate boundaries. Researchers introduce a ... Read more
Joint Command and Control (JC2) capability development utilising a Modelling and Simulation Framework

Author: Ramadeen, P ; Uys, D ; Duvenhage, A Date: 01 Sep 2010 The command, control and information warfare competency of Defence, Peace, Safety and Security (DPSS), an operating unit of the CSIR is using systems modelling and simulation in its Joint Command and Control (JC2) research. JC2 encompasses ... Read more
Joint queue-perturbed and weakly-coupled power control for wireless backbone networks

Author: Olwal, TO ; Djouani, K ; Kogeda, OP ; Van Wyk, BJ Date: Sep 2012 Wireless Backbone Networks (WBNs) equipped with Multi-Radio Multi-Channel (MRMC) configurations do experience power control problems such as inter-channel and co-channel interference, high energy consumption at the multiple queues and unscalable ... Read more
Jonkershoek research catchments: history and impacts on commercial forestry in South Africa.

Author: Chapman, A Date: Sep 2007 By the 1850s, European settlers were over-exploiting of South Africa’s indigenous forest resources for timber. As a result of rising concerns, authorities began a programme of afforestation (usually a grassland or fynbos conversion) using ... Read more
Journal of Information Warfare

Author: Mtsweni, Jabu S Date: Mar 2022 Cybersecurity has evolved over the years, and today cyberattacks instigated by cyber-criminals, nation states, or insider threat actors are part of regular headline news. In South Africa and around the world, the number of cyberattacks or ... Read more
The journey of the CSIR L.I.F.E. CPAP ventilator

Author: Bosscha, Peter A Date: Nov 2022 The development, manufacturing and deployment of a South African engineered Continuous Positive Airway Pressure Ventilator is described. The CSIR L.I.F.E. (Lung Inspiratory Flow Enabler) Ventilator was developed during the COVID Pandemic in ... Read more
The Journey: Women in Physics in South Africa

Author: Gledhill, Irvy MA ; Diale, M ; Tibane, MM ; Maphanga, RR ; Thaoge, ML Date: Aug 2014 The progress from 2005 to now is evident. The journey has been a slow uphill with numbers increasing in the country. Different universities have graduated a woman in physics PhD while there are women professors in different institutions. ... Read more
The journey: Women in physics in South Africa

Author: Diale, M ; Maphang, RR ; Tibane, MM ; Thaoge, ML ; Gledhil, I Date: Aug 2014 The progress from 2005 to now is evident. The journey has been a slow uphill with numbers increasing in the country. Government structures have recognized the importance of women in science that the Department of Science and Technology (DST) ... Read more
JSON Schema for Attribute-based Access Control for Network Resource Security

Author: Linklater, G ; Smith, C ; Connan, J ; Herbert, A ; Irwin, Barry VW Date: Sep 2017 Attribute-based Access Control (ABAC) is an access control model where authorization for an action on a resource is determined by evaluating attributes of the subject, resource (object) and environment. The attributes are evaluated against ... Read more
Juggling copyright and open access in the 21st century: a South African case study

Author: Muswelanto, S ; Van Deventer, Martha J ; Van der Merwe, Adèle Date: Jul 2009 With the establishment of an Institutional Repository (IR) one of the first questions the organisation should ask is: ‘How could we promote Open Access (OA) and still adhere to the restrictions of copyright? The Council for Scientific and ... Read more
Keeping it simple in a data-sparse environment: The case of donor breastmilk demand and supply in South Africa

Author: Viljoen, NM ; Celik, M ; Cao, W ; Swann, J ; Ergun, O Date: Sep 2012 Donor breastmilk could potentially save thousands of neonatal lives and save millions of Rands in treatment costs annually. A facility location-allocation model will be used to develop a strategic national network expansion plan based on an ... Read more
Kent mixture model for classification of remote sensing data on spherical manifolds

Author: Lunga, D ; Ersoy, O Date: Oct 2011 Modern remote sensing imaging sensor technology provides detailed spectral and spatial information that enables precise analysis of land cover usage. From a research point of view, traditional widely used statistical models are often limited ... Read more
Kernel bandwidth estimation for non-parametric density estimation: a comparative study

Author: Van der Walt, CM ; Barnard, E Date: Dec 2013 We investigate the performance of conventional bandwidth estimators for non-parametric kernel density estimation on a number of representative pattern-recognition tasks, to gain a better understanding of the behaviour of these estimators in ... Read more
Key challenges facing water resource management in South Africa

Author: Ashton, P ; Hardwick, D Date: Nov 2008 The paper discusses geographic reality; water availability and water security as well as the challenges and opportunities facing water resource managers and the importance of good governance Read more
Key considerations in infrared simulations of the missile-aircraft engagement

Author: Willers, MS ; Willers, Cornelius J Date: Sep 2012 This paper briefly analyses the broader framework of requirements for an imaging simulation system, in the 0.4 to 14 µm spectral bands. An existing imaging simulation system, OSSIM, is used to evaluate the identified key requirements for ... Read more
A key distribution scheme using elliptic curve cryptography in wireless sensor networks

Author: Louw, J ; Niezen, G ; Ramotsoela, TD ; Abu-Mahfouz, Adnan MI Date: Dec 2016 Wireless sensor networks (WSNs) have become increasingly popular in many applications across a broad range of fields. Securing WSNs poses unique challenges mainly due to their resource constraints. Traditional public key cryptography (PKC) ... Read more
Key performance indicators for project success on innovative building technology projects

Author: Mphahlele, Cathy Date: Dec 2015 The South African government, through the Presidential Infrastructure Coordinating Commission has resolved to deliver social infrastructure such as schools, early childhood centers, clinics and student accommodation using Innovative Building ... Read more
Key principles for adapting South African settlement patterns to climate change

Author: Van Wyk, Llewellyn V Date: Jun 2017 The aim of the paper is to identify key principles for adapting SA settlement patterns to climate change. Section 1 reviews the range of climate-related impacts likely to affect SA settlements using climate change models and scenarios as a ... Read more
Kinematics and dynamics modelling of a mecanum wheeled mobile platform

Author: Tlale, NS ; De Villiers, M Date: Dec 2008 Omni-directional mobile platforms have the ability to move instantaneously in any direction from any configuration. As such, it is important to have a mathematical model of the platform, especially if the platform is to be used as an autonomous ... Read more

Now showing items 2968-2987 of 5732

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