Abdul Rahman | Universitas Mulawarman (original) (raw)
Papers by Abdul Rahman
2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
This paper derives a simulation based comparison for UWBOFDM with different multipath channel mod... more This paper derives a simulation based comparison for UWBOFDM with different multipath channel models. Several multipath channel models such as (AWGN, Rayleigh and Rician) has been simulated and compared with a proposed hybrid combination of Rayleigh, Rician and AWGN to observe a realistic multipath faded environment. These cases are based on no fading and flat Rayleigh-fading, multiple-diversity reception Rayleigh-fading, and
Journal of Geology, 1993
... Rogers and Greenberg (1981) used the ratio of the most lithophilic major element (K) and the ... more ... Rogers and Greenberg (1981) used the ratio of the most lithophilic major element (K) and the most mafic component (Mg) vs. Si02 plot to distinguish the calc-alkaline rocks from alkaline granite suite. Tournal of Geology 415 Page 4. ABDUL RAHMAN AND SYED M. ZAINUDDIN ...
Asia Pacific Family Medicine, 2015
Background: Hypertension is one of the world's most common health conditions and is a leading ris... more Background: Hypertension is one of the world's most common health conditions and is a leading risk factor for mortality. Although blood pressure can be modified, there is a large proportion of patients whose blood pressure remains uncontrolled. The aim of this study, termed Edvantage 360°, was to gain a deeper understanding of hypertension management in Asia from the perspective of patients and doctors, and to propose strategies to improve blood pressure control. Methods: Conducted in Hong Kong, Indonesia, Malaysia, the Philippines, South Korea, Taiwan, and Thailand, Edvantage 360°was a mixed-methods observational study that used both qualitative and quantitative elements: qualitative interviews and focus groups with patients (N = 110), quantitative interviews with patients (N = 709), and qualitative interviews with doctors (N = 85).
Palm oil fuel ash (POFA) is a by-product from palm oil mill. It is found that this ash contains p... more Palm oil fuel ash (POFA) is a by-product from palm oil mill. It is found that this ash contains pozzolanic which possess cementitious properties that enable it to replace cement. This leads to this research to study the possibility of POFA to replace Ordinary Portland Cement (OPC) in stabilizing peat soil. POFA which were collected from Bukit Kerayong was dried
2014 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2014
2011 IEEE 11th International Conference on Data Mining Workshops, 2011
Understanding how nodes interconnect in large graphs is an important problem in many fields. We w... more Understanding how nodes interconnect in large graphs is an important problem in many fields. We wish to find connecting nodes between two nodes or two groups of source nodes. In order to find these connecting nodes in huge graphs, we have devised a highly parallelized variant of a k-shortest path algorithm that levies the power of the Hadoop distributed computing
2013 International Conference on Electronics, Computer and Computation (ICECCO), 2013
ABSTRACT The current state-of-the-art speech emotion recognition approaches focus on discrete emo... more ABSTRACT The current state-of-the-art speech emotion recognition approaches focus on discrete emotion classification to suit the users' need. However, in more practical perspective, emotion is deemed complex to be individually segregated and it is a continuous process that will change dynamically over time. Subsequently, no researcher can really claim of being able to find the threshold discriminating one emotion to another. In this paper, an alternative approach of Valence-Arousal is introduced based on the psychologists' understanding that emotion can be represented in two emotion primitives of Valence and Arousal. Empirical results show potential of the proposed approach, which achieved reasonable accuracy with better speech emotion understanding and analysis.
2011 IEEE Symposium on Industrial Electronics and Applications, 2011
Autism is often diagnosed during preschool or toddled age. This diagnosis often depends on behavi... more Autism is often diagnosed during preschool or toddled age. This diagnosis often depends on behavioral test. It is known that individuals with autism have abnormal brain signals different from typical persons yet this difference in signals is slight that it is often difficult to distinguish from the normal. However, Electroencephalogram (EEG) signals have a lot of information which reflect the
Reputation, Stability and Risks, 2013
Computer Applications in Industry and Engineering, 2010
There has been a growing concern about the impact of economic policies on agriculture, especially... more There has been a growing concern about the impact of economic policies on agriculture, especially among developing countries. This is primarily because these policies - including pricing, taxation and trade policies - directly and indirectly affect the profitability and level of prosperity in the agriculture sector. It is with this in mind that the Kiel Institute of World Economics has
There has been a growing concern about the impact of economic policies on agriculture, especially... more There has been a growing concern about the impact of economic policies on agriculture, especially among developing countries. This is primarily because these policies - including pricing, taxation and trade policies - directly and indirectly affect the profitability and level of properity in the agriculture sector. It is with this in mind that the Kiel Institute of World Economics has
The Developing Economies, 2007
The Developing Economies, XXXII-1 (March 1994) CREDIT, TECHNOLOGY, AND PADDY FARM PRODUCTION: A C... more The Developing Economies, XXXII-1 (March 1994) CREDIT, TECHNOLOGY, AND PADDY FARM PRODUCTION: A CASE STUDY OF TANJONG KARANG AND BERANANG, MALAYSIA DEVENDRÁ Prasad Yadav ABDUL AZIZ Abdul Rahman I. INTRODUCTION The paddy and rice sector ...
Measurement, 2011
Experimental Modal Analysis (EMA) and Operational Modal Analysis (OMA) are two widely used techni... more Experimental Modal Analysis (EMA) and Operational Modal Analysis (OMA) are two widely used techniques in the identification of modal parameters. EMA is synonymous with a laboratory environment requiring complete system shutdown while OMA is implemented in a real environment where the ambient forces cannot be isolated. A new method, namely Impact-Synchronous Modal Analysis (ISMA) utilising the modal extraction techniques commonly used in EMA but performed in the presence of the ambient forces, is proposed. Transfer functions, from where the modal parameters are extracted, are obtained from Fourier transform of cross and auto correlation functions. These functions are estimated quantities and their outcomes are dependable on the averaging techniques used. The coherence functions are commonly used to measure the acceptability of the estimations. Impact-Synchronous Time Averaging is compared against Spectral Averaging while performing Modal Analysis in a situation containing ambient and operating forces. Results showed that while the transfer functions obtained from both the averaging techniques were of similar quality, the Impact-Synchronous Time Averaging indicated better coherence than the Spectral Averaging.
Journal of the Economic and Social History of the Orient, 1991
Following the Ottoman conquest of Egypt in 1517, both Sultan Selim I and Sultan Sulayman al-Qanun... more Following the Ottoman conquest of Egypt in 1517, both Sultan Selim I and Sultan Sulayman al-Qanuni made attempts to organize the administration of this newly acquired territory. Modern scholarship has generally concentrated on the central administration created by ...
Journal of Lightwave Technology, 2000
In all-optical packet switching, packets may arrive at an optical switch in an uncoordinated fash... more In all-optical packet switching, packets may arrive at an optical switch in an uncoordinated fashion. When contention occurs, fiber delay lines (FDLs) are needed to delay (buffer) the packets that have lost in the contention to some future timeslots for the desired output ports. There have been several optical-buffered switch architectures and FDL assignment algorithms proposed in the literature. However, most of them either have high implementation complexity or fail to schedule in advance departure time for the delayed packets. In this paper, we study the packet scheduling algorithms for the single-stage shared-FDL optical packet switch. We propose three new FDL assignment algorithms, namely sequential FDL assignment (SEFA), multi-cell FDL assignment (MUFA), and parallel iterative FDL assignment (PIFA) algorithms for the switch. Our algorithms can make FDL and output-port reservation so as to schedule departure time for packets. Owing to FDL and/or output-port conflicts, the packets that fail to be scheduled are discarded before entering the switch so that they do not occupy any FDL resources. We show by simulation that with these algorithms, the optical-buffered switch can achieve a loss rate of ~10 −7 even at the load of 0.9. These algorithms are extended to the three-stage Clos-network optical packet switches in our companion paper.
Journal of Food Science, 1972
Journal of Food Science, 1971
Page 1. ABDUL R. RAHYAN, W. 1. HENNING ond DE WESTCOTT Food Loborcrtory, US Army Nrrtick Loborrrt... more Page 1. ABDUL R. RAHYAN, W. 1. HENNING ond DE WESTCOTT Food Loborcrtory, US Army Nrrtick Loborrrtories, Notick, Moss. HISTOLOGICAL AND PHYSICAL CHANGES IN CARROTS AS AFFECTED BY BLANCHING, COOKING ...
Journal of Food Science, 1972
2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
This paper derives a simulation based comparison for UWBOFDM with different multipath channel mod... more This paper derives a simulation based comparison for UWBOFDM with different multipath channel models. Several multipath channel models such as (AWGN, Rayleigh and Rician) has been simulated and compared with a proposed hybrid combination of Rayleigh, Rician and AWGN to observe a realistic multipath faded environment. These cases are based on no fading and flat Rayleigh-fading, multiple-diversity reception Rayleigh-fading, and
Journal of Geology, 1993
... Rogers and Greenberg (1981) used the ratio of the most lithophilic major element (K) and the ... more ... Rogers and Greenberg (1981) used the ratio of the most lithophilic major element (K) and the most mafic component (Mg) vs. Si02 plot to distinguish the calc-alkaline rocks from alkaline granite suite. Tournal of Geology 415 Page 4. ABDUL RAHMAN AND SYED M. ZAINUDDIN ...
Asia Pacific Family Medicine, 2015
Background: Hypertension is one of the world's most common health conditions and is a leading ris... more Background: Hypertension is one of the world's most common health conditions and is a leading risk factor for mortality. Although blood pressure can be modified, there is a large proportion of patients whose blood pressure remains uncontrolled. The aim of this study, termed Edvantage 360°, was to gain a deeper understanding of hypertension management in Asia from the perspective of patients and doctors, and to propose strategies to improve blood pressure control. Methods: Conducted in Hong Kong, Indonesia, Malaysia, the Philippines, South Korea, Taiwan, and Thailand, Edvantage 360°was a mixed-methods observational study that used both qualitative and quantitative elements: qualitative interviews and focus groups with patients (N = 110), quantitative interviews with patients (N = 709), and qualitative interviews with doctors (N = 85).
Palm oil fuel ash (POFA) is a by-product from palm oil mill. It is found that this ash contains p... more Palm oil fuel ash (POFA) is a by-product from palm oil mill. It is found that this ash contains pozzolanic which possess cementitious properties that enable it to replace cement. This leads to this research to study the possibility of POFA to replace Ordinary Portland Cement (OPC) in stabilizing peat soil. POFA which were collected from Bukit Kerayong was dried
2014 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2014
2011 IEEE 11th International Conference on Data Mining Workshops, 2011
Understanding how nodes interconnect in large graphs is an important problem in many fields. We w... more Understanding how nodes interconnect in large graphs is an important problem in many fields. We wish to find connecting nodes between two nodes or two groups of source nodes. In order to find these connecting nodes in huge graphs, we have devised a highly parallelized variant of a k-shortest path algorithm that levies the power of the Hadoop distributed computing
2013 International Conference on Electronics, Computer and Computation (ICECCO), 2013
ABSTRACT The current state-of-the-art speech emotion recognition approaches focus on discrete emo... more ABSTRACT The current state-of-the-art speech emotion recognition approaches focus on discrete emotion classification to suit the users' need. However, in more practical perspective, emotion is deemed complex to be individually segregated and it is a continuous process that will change dynamically over time. Subsequently, no researcher can really claim of being able to find the threshold discriminating one emotion to another. In this paper, an alternative approach of Valence-Arousal is introduced based on the psychologists' understanding that emotion can be represented in two emotion primitives of Valence and Arousal. Empirical results show potential of the proposed approach, which achieved reasonable accuracy with better speech emotion understanding and analysis.
2011 IEEE Symposium on Industrial Electronics and Applications, 2011
Autism is often diagnosed during preschool or toddled age. This diagnosis often depends on behavi... more Autism is often diagnosed during preschool or toddled age. This diagnosis often depends on behavioral test. It is known that individuals with autism have abnormal brain signals different from typical persons yet this difference in signals is slight that it is often difficult to distinguish from the normal. However, Electroencephalogram (EEG) signals have a lot of information which reflect the
Reputation, Stability and Risks, 2013
Computer Applications in Industry and Engineering, 2010
There has been a growing concern about the impact of economic policies on agriculture, especially... more There has been a growing concern about the impact of economic policies on agriculture, especially among developing countries. This is primarily because these policies - including pricing, taxation and trade policies - directly and indirectly affect the profitability and level of prosperity in the agriculture sector. It is with this in mind that the Kiel Institute of World Economics has
There has been a growing concern about the impact of economic policies on agriculture, especially... more There has been a growing concern about the impact of economic policies on agriculture, especially among developing countries. This is primarily because these policies - including pricing, taxation and trade policies - directly and indirectly affect the profitability and level of properity in the agriculture sector. It is with this in mind that the Kiel Institute of World Economics has
The Developing Economies, 2007
The Developing Economies, XXXII-1 (March 1994) CREDIT, TECHNOLOGY, AND PADDY FARM PRODUCTION: A C... more The Developing Economies, XXXII-1 (March 1994) CREDIT, TECHNOLOGY, AND PADDY FARM PRODUCTION: A CASE STUDY OF TANJONG KARANG AND BERANANG, MALAYSIA DEVENDRÁ Prasad Yadav ABDUL AZIZ Abdul Rahman I. INTRODUCTION The paddy and rice sector ...
Measurement, 2011
Experimental Modal Analysis (EMA) and Operational Modal Analysis (OMA) are two widely used techni... more Experimental Modal Analysis (EMA) and Operational Modal Analysis (OMA) are two widely used techniques in the identification of modal parameters. EMA is synonymous with a laboratory environment requiring complete system shutdown while OMA is implemented in a real environment where the ambient forces cannot be isolated. A new method, namely Impact-Synchronous Modal Analysis (ISMA) utilising the modal extraction techniques commonly used in EMA but performed in the presence of the ambient forces, is proposed. Transfer functions, from where the modal parameters are extracted, are obtained from Fourier transform of cross and auto correlation functions. These functions are estimated quantities and their outcomes are dependable on the averaging techniques used. The coherence functions are commonly used to measure the acceptability of the estimations. Impact-Synchronous Time Averaging is compared against Spectral Averaging while performing Modal Analysis in a situation containing ambient and operating forces. Results showed that while the transfer functions obtained from both the averaging techniques were of similar quality, the Impact-Synchronous Time Averaging indicated better coherence than the Spectral Averaging.
Journal of the Economic and Social History of the Orient, 1991
Following the Ottoman conquest of Egypt in 1517, both Sultan Selim I and Sultan Sulayman al-Qanun... more Following the Ottoman conquest of Egypt in 1517, both Sultan Selim I and Sultan Sulayman al-Qanuni made attempts to organize the administration of this newly acquired territory. Modern scholarship has generally concentrated on the central administration created by ...
Journal of Lightwave Technology, 2000
In all-optical packet switching, packets may arrive at an optical switch in an uncoordinated fash... more In all-optical packet switching, packets may arrive at an optical switch in an uncoordinated fashion. When contention occurs, fiber delay lines (FDLs) are needed to delay (buffer) the packets that have lost in the contention to some future timeslots for the desired output ports. There have been several optical-buffered switch architectures and FDL assignment algorithms proposed in the literature. However, most of them either have high implementation complexity or fail to schedule in advance departure time for the delayed packets. In this paper, we study the packet scheduling algorithms for the single-stage shared-FDL optical packet switch. We propose three new FDL assignment algorithms, namely sequential FDL assignment (SEFA), multi-cell FDL assignment (MUFA), and parallel iterative FDL assignment (PIFA) algorithms for the switch. Our algorithms can make FDL and output-port reservation so as to schedule departure time for packets. Owing to FDL and/or output-port conflicts, the packets that fail to be scheduled are discarded before entering the switch so that they do not occupy any FDL resources. We show by simulation that with these algorithms, the optical-buffered switch can achieve a loss rate of ~10 −7 even at the load of 0.9. These algorithms are extended to the three-stage Clos-network optical packet switches in our companion paper.
Journal of Food Science, 1972
Journal of Food Science, 1971
Page 1. ABDUL R. RAHYAN, W. 1. HENNING ond DE WESTCOTT Food Loborcrtory, US Army Nrrtick Loborrrt... more Page 1. ABDUL R. RAHYAN, W. 1. HENNING ond DE WESTCOTT Food Loborcrtory, US Army Nrrtick Loborrrtories, Notick, Moss. HISTOLOGICAL AND PHYSICAL CHANGES IN CARROTS AS AFFECTED BY BLANCHING, COOKING ...
Journal of Food Science, 1972