15 research outputs found
Simulation and bit error rate performance of code division multiple access / Muhammad Azwan Ibrahim
No full textCode Division Multiple Access (CDMA) is different than those traditional ways in that it does not allocate frequency or time in user slots but gives the right to use both to all users simultaneously. To do this, a technique known as Spread Spectrum is implemented. The subject of this paper is on data detection and Bit Error Rate (BER) performance of CDMA. The backbone of the project is the CDMA simulation built by using Matlab Simulmk. In this paper, simulation and comparison on the effect of noise and the multipath propagation to the quality of signals in the Direct Sequence Code Division Multiple Access (DS-CDMA) system for both simple non-rake receiver without any special error correction coding mechanism compared with the performance of Rake Receiver
Legalizing software for measuring instruments: a proposed plan for malaysian case study
No full textSoftware has become one of the most critical parts of a measuring instrument. Despite the sophistication and
complexity of measuring instruments, legal metrology framework on software remains poor. Several legal cases
related to the manipulation and modification of software used in measuring instruments have been discovered in
ASEAN countries, particularly in Malaysia. A survey has been conducted and findings show that most ASEAN
countries have yet to implement and enforce legal metrology control on the software in their metrological system.
This paper discusses an approach to legalizing software for measuring instruments in the Malaysian context
Correlations between microstructure, nitrogen concentration and micro hardness of nitrided Ferritic Stainless Steel
No full textGas Nitriding of Ferritic Stainless steels AISI 430 was carried out at 600 , for various period of nitriding process which were for 2 hours, 8 hours and 24 hours. The effect of nitriding process period in term of microstructure, overall micro hardness, cross section hardness and nitrogen diffusion rate were investigated. The microstructures of samples were carried out using both Optical Microscope (OM) and Scanning Electron Microscope (SEM). The phase changes and Nitride precipitation formation were observed with respect to period of nitriding. Aside Microstructure, Energy Dispersive Spectroscopy (EDS) was conducted on the samples to investigate the nitrogen concentration inside the material. Vickers Hardness test have been carried out to investigate the effect of phase changes and it correlation toward the hardness of the materials.Unnitrided ferritic stainess steel having bigger size of grain boundaries were compared to nitride ferritic stainless steels and this is due to heat treatment during manufacturing process and concentration of nitrogen inside the steel
A certification criteria for software of measuring instruments based on Malaysian environment
No full textParty makers enterprise / Mohd Shaiful Zahari Sallehudin ... [et al.]
No full textReason for Choice of Business:
• To establish and operate party events for the people who are living in
Shah Alam area.
• To provide with the friendliest services with affordable prices of services
Knowledge management strategic context in technological trajectories of firm influences their innovation strategy: Looking at Malaysian multinational firm
No full textThe paper study on the knowledge management strategic context in technological trajectories of firm influences their innovation strategy. Thus, to make use of technology as a competitive weapon; managers must manage it as a part of the business system. Failure to develop and integrate technology strategy and business is a major contributing factor in the decline of a firm's competitiveness In a turbulent and rapidly changing environment, every organization faces the challenge of how to best manage its knowledge assets to generate value for the market place and obtain competitive advantage Such advantage derives from
special capabilities that are rare, valuable, nonsubstitutable, and costly to imitate. Historically, the
focus was on capabilities involving tangible assets;
now, knowledge is widely recognized as the source for
competitive advantage, with the tangible assets representing the physical manifestation of but a fraction of this knowledge As companies scramble to develop strategies for more proactively and strategically managing their knowledge, the field of knowledge management (KM) receives increasing attention from trade organizations and academic journals. From this study it was found that to improve the chances of conclusively demonstrating value to the K-Economy, a new KM implementation in an innovation organization should address issues such as organization's goals and strategies, access tacit knowledge, provide search tools, promote creativity, capture new learning and build a supportive culture,insufficient communication, failure to integrate knowledge, lack of time to learn, lack of training a senses there was little personal benefit in knowledge management
Formalizing Attack Tree on Security Object for MySANi in Legal Metrology
No full textIllegal software manipulation is one of the biggest issues in software security. This includes the legally relevant software which are now crucial modules in weight and measuring instruments such as weighbridges. Despite the advancement and complexity of weight and measuring instruments, the inspection methodology is weak and lacks of innovation. The conventional inspection method is merely based on the observation printed certificate of the software. This paper introduces Malaysia Software-Assisted Non-Automatic Weighing Instrument (NAWI) Inspection (MySANI), a method used to enhance the software inspection scheme in legal metrology. MySANI introduces security objects in order to assist and enhance the inspection process. The security evaluation is based on the best practices in IT in metrology, where the attack model on relevant assets of the security objects is simulated for the Attack Probability Tree. The attack tree is verified by integrating formal notation and comparison with finite state transition system domain to verify the correctness properties of the tree design before the model can be further used in a risk analysis procedure within the Attack Probability Tree framework. Results show that the designed attack tree is consistent with the designed simulation
