Universiti Teknikal Malaysia Melaka: UTeM Open Journal System
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Analysis of Crosstalk Noise for 2π RC Model considering Interconnect Parameters in Deep Submicron VLSI Circuit
Get PDFAs the technology enters into deep sub-micron region, signal integrity is becoming a very crucial parameter. In order to deal with the challenges associated with signal integrity problem, such as, crosstalk noise and delay, estimation and minimizing techniques should be addressed with great importance. Along with this, the peak noise amplitude and noise width values in the sensitive node must be verified and confirmed that they are below the certain threshold levels. Hence, for a particular range of frequency, an accurate and efficient crosstalk noise estimation model is necessary to confirm the signal integrity. Therefore, this work aims to analyse the crosstalk noise between two interconnect lines using 2π RC model, and considering its physical parameters, such as the parasitic capacitance, resistance and inductance and interconnect parameters, specifically the spacing between two interconnects, length, width, thickness, height from substrate in deep sub-micron VLSI circuit. In this paper, analytical expressions for peak noise amplitude and noise width in 2π model with RC interconnects for unit step input were derived, and then it was simulated in MATLAB and HSPICE software platform. The MATLAB based results represent that 2π model possesses less errors, and showed better performance compared to some other popular models by adjusting the interconnecting parameters for any certain range of operating frequency. The HSPICE simulation justifies the accuracy of the approach with full satisfaction
Does Work Stress Harm Job Performance? A Survey Study among Young Urban Professional Group (YUPPIES)
Get PDFThe main aim of this comparative study is to determine the influence of work stress towards job performance. A quantitative survey of 200 Malaysian young urban professional groups (YUPPIES) has been conducted. The main analysis first reveals that there is no relationship between extrinsic effort and job performance (r = 0.147, p = 0.145) for female YUPPIES and also for male YUPPIES (r = 0.038, p = 0.707). Second, there is significant and positive relationship between extrinsic reward and job performance for both female (r = 0.550, p = 0.000) and male (r = 0.399, p = 0.000) YUPPIES. Finally, there is no relationship between overcommitment and job performance (r = 0.117, p = 0.248) for female YUPPIES. However, there is significant and positive relationship between overcommitment and job performance (r = 0.423, p = 0.000) for male YUPPIES. Based on the findings, two interesting results have been discovered. First, extrinsic reward does not negatively affect performance for both gender and second, overcommitment does not negatively affect performance for female YUPPIES. Therefore, in this case, work stress has been discovered to give positive influence on job performance. These works illustrate and provide some views in organizational management and human capital development from Malaysian working environment
THE IMPACT OF INDIVIDUAL LEARNING STYLE ON ATTITUDE TOWARDS TELEVISION AS ADVERTISING MEDIA.
Get PDFMarketing communication through various media has always been important for marketers to build customer relationship. Every individual has their own manner of learning style. Since individuals display significant difference in learning style, marketers should investigate the segmentation of consumers by learning style to improve the effectiveness of marketing communication. VARK learning style model is applied in this study because this model focus on sensory and perceptual processes which are widely utilized in implementing and usage of advertising media. Television being the frequently used advertising media is involved in this research illustrating how consumers in Melaka show their attitudes towards television as advertising media with regards to learning modalities in VARK model. Result is tested if the learning modalities impact the attitude, findings indicate Visual modality has the greatest positive influence on attitude towards television as advertising media, followed by Auditory modality. In contrast, Kinesthetic modality has the greatest negative influence on attitude towards television as advertising media, followed by Read/Write modality. The findings also indicate the four modalities in VARK model has significance on the attitude towards television as advertising media. Results of analysis also show that dominant learning modality exist in this research study
Dehydration Characteristics of Taro Root (Colocasia Esculenta) Slices using a Refractance WindowTM Dryer
Get PDFThis report presents the dehydration characteristics of Taro (Colocasia esculenta) root slices dried at 65, 75, 85 and 95oC in a fabricated laboratory scale Refractance WindowTM dryer; the Taro root slices were 3.0, 4.5 and 6.0 mm thick. Moisture content and water activity variation data were taken during the drying operation for the process conditions selected. For the process conditions studied, the times required to dehydrate the moisture content to 0.11 g-water/g-solid varied between 55 to 260 minutes. For a given slice thickness, the drying times to reach the 0.11 g-water/g-solid moisture content decreased as the drying temperature increased. Also, for a given drying temperature, the drying times required to reach the 0.11 g-water/g-solid moisture content increased with slice thickness. The effective moisture diffusivity varied from 8.14 x 10-08 to 9.53 x10-07 m2/s for the process conditions studied. While moisture diffusivity data on the Refractance WindowTM dryer, was not found in the literature, the moisture diffusivity values estimated, were within the range observed for other equipment. The moisture diffusivity parameters determined in this study, are important because they are useful in the design, modelling, and optimisation of such dryers
A Study To Analyze Impact Of Whatsapp On Emotional Health Society
No full textwith an enormous growth in the number of users for social media, it becomes important to understand its impact on the society. This paper is a small step in this direction by analyzing the impact of social media on the emotional health of its users. The paper in particular focuses on the impact of WhatsApp usage. In the study authors have focused their research on 98 users. In this survey authors found that WhatsApp has a significant impact on the humans these days. Some findings during this study are alarming and needs to be controlled. It is noticed during the survey that WhatsApp has greatly influenced the life style of its users and therefore its usage should be monitored and controlled to avoid any adverse affect on emotional health of its users.
Low Complexity Security Algorithm for CPS / IoT Networks
Get PDFDue to its noisy nature, wireless channel plays a dominant role in deciding the performance of data communication between the smart objects in the cyberphysical systems (CPS) or the internet of things (IoT). Open and heterogeneous nature of these networks makes them susceptible to vulnerable attacks. So, to keep up the confidentiality and integrity of the transmitted data against the adversaries, it should be secured before transmission. However, issues such as power efficiency, low computational complexity need to be considered when designing security algorithms for CPS/IoT networks. Traditional encryption algorithms, such as Advanced Encryption Standard (AES), International Data Encryption Algorithm (IDEA) can be used for security purpose, but they do not satisfy power and complexity criteria as per CPS/IOT networks requirements. Moreover, they exhibit poor bit error ratio (BER) performance in a noisy wireless channel. This paper presents a modified security algorithm, AES-P, with X-OR mapping on AES to make them suitable for CPS/IoT applications. Simulation and analysis of the proposed algorithm showed that its power consumption and complexity are reduced as compared to traditional AES. It also performed better in the wireless channel, while maintaining the required security level satisfied by Avalanche effect
THE DEVELOPMENT OF QUALITY OF LIFE INSTRUMENT
Get PDF The purpose of this research is to develop an instrument to measure the quality of life based on constructs or factors proposed within academic and non-academic institutions. Two different institutions were selected in the study which are Kolej Poly-Tech MARA Alor Setar (KPTM) and Muda Agriculture Development Authority (MADA). Literature review has been done and a conclusion on the key components (construct) of quality of life instrument are general health and functional status, socio-economic status, life satisfaction and self-esteem. Content validity is done with expert validation to improve the items that has been develop. Face validity is achieved by focus group in two different institutions to gain the feedback and opinion regarding the questionnaire. For pilot test, questionnaires were distributed to 50 respondents for each institution respectively. Then, the pilot test results were used to conduct reliability test – Cronbach’s Alpha Coefficient and Exploratory Factor Analysis. The finding show that the reliability testing has achieved a satisfactory level by using EDA in depth understanding is obtained and cross checked with Cronbach’s Alpha and EFA value. Concerning to the current findings in academic and nonacademic area, the 4 constructs of Quality of Life would be maintained without the changing or reducing the total factors that emerge from the analysis. Keywords: quality of life, content validity, face validity, factor analysi
Integrated Management System: The Converging of Key Quality Standards into Single Standard
Get PDFThis paper discussed the Integrated Management System (IMS) that combined the quality (ISO 9001), environment (ISO 14001) and occupational health and safety (OHSAS 18001) management system. In order to investigate the component that can be integrated with IMS, the research focuses on identifying two parts, 1) Converged component and 2) Diverged component. A series of the interview was conducted through in-depth interviews with 5 experts in this field, while data collected were analyzed qualitatively. As a conclusion, this research identified the component in IMS that can be applied for better quality management in terms of cost, time and resources towards sustainability practices in the organization.
Rain Attenuation Factor in the Earth-Space Links of Tropical Regions
Get PDFRain attenuation is an important factor to be considered in the Earth-space communication link budget, especially for regions that receive heavy rainfall, e.g. tropical regions. Inaccurate estimation of rain attenuation may result in broken or intermittent Earth-space links. The estimation of rain attenuation depends on many other factors. One of the important ones is the height from sea level within which raindrops is assumed present, i.e. rain height. International Telecommunications Union (ITU) recommends the ITU-R P.839-4 (09-2013) method for predicting rain height, and the ITU-R P.618-13 (12-2017) method for determining rain attenuation. Recently, some works claimed inaccuracy of these methods in the tropical regions, and proposed some modified methods. This paper aims to clarify the doubts. We determine the possible causes of inaccuracy, and then assess the impact of inaccurate estimation of rain height onto rain attenuation. As compared to the modified methods, we found that the rain height values calculated from ITU-R P.839-4 make more sense. It is likely that incorrectly represented formulas were used in some related works. Moreover, rain attenuation values obtained from ITU-R P.618-13 are resilient to the changes in rain heights. As a result, we advocate the use of the ITU-R P.839-4 and ITUR P.618-13 methods in the tropical regions
FUNDAMENTAL STUDY ON MODIFICATION PROCESS OF DESIGN PLAN FOR COMPUTER-AIDED PRODUCT DESIGN CONSIDERING WAYS OF USAGE
Get PDFGlobalization in industry has increased the number of troubles caused by using products in unexpected ways. It is important to avoid such troubles in advance by performing product design considering various ways of usage. To achieve this, it is necessary to predict various ways of usage, to detect troubles which may occur by using the product in those ways and to modify the current design plan so that those troubles are avoided. A set of methods are developed based on Petri net modeling of design plan for computer support of the former two processes. The last process basically depends on creativity and knowledge of designers. However, if there are patterns of modification, it would be possible to help designers to modify design plans with computers by exploiting those patterns. This research aims at finding patterns of modification from cases of modification of design plan in actual design. Definition of pattern of modification was discussed and given as a combination of the reason, the objective and the way of modification. 200 patterns were then obtained by classification of each of the three items. It was found that many cases of modification in actual design fit 9 of the 200 patterns. It is possible that those 9 patterns can be exploited for computer support of modification process