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28,451 Article Results

Design and Implementation of Efficient Analysis and Synthesis QMF Bank for Multicarrier Cognitive Radio Communication.

10.12928/telkomnika.v15i2.4746
Ankur Singh; Panjab University Chandigarh Kang , Renu; Panjab University Chandigarh Vij
The present section deals with a new type of technique for designing an efficient two channel Quadrature Mirror Filter Bank with constant phase in frequency. For achieving the Perfect Reconstruction Condition in Filter bank, an attempt has been made to design the low pass prototype filter with its impulse response and frequency response in three regions namely pass band, stop band and transition band region. With the error in terms of Reconstruction and the attenuation in the stop band as seen in the prototype filter response, one can evaluate the performance of the introduced filter with the help of filter coefficients generated in the design examples that affects the quality of filter bank design under the constraints of Near Perfect Reconstruction Conditions.
Volume: 15
Issue: 2
Page: 636-645
Publish at: 2017-06-01

The Application of Scanning Electron Microscope and Melt Flow Index for Orange Peel in Laser Sintering Process

10.11591/ijeecs.v6.i3.pp615-622
Wan Ahmad Yusoff
In manufacturing, many products need to undergo increasing customisation, and a shortening of the manufacturing cycle time. This makes the time needed to produce prototypes one of the most important contributors to product development cycles. Rapid Prototyping (RP) offers the user the ability to optimise part design in order to meet customer requirements with few manufacturing restrictions. One of the most common RP processes is Laser Sintering (LS). A problem with LS is that sometimes the surface of the parts produced displays a texture similar to that of the skin of an orange (the so-called “orange peel” texture). This problem must be addressed before the technology can gain wider acceptance. The main aim of this research is to develop a methodology of controlling the input material properties that will ensure consistent and good quality of the fabricated parts. From the experiment, it was found that PA12 powder with high melt flow rate, low melting temperature, low glass transition temperature and low degree of crystallization temperature could improve the sintering process to produce a good Laser Sintering (LS) parts with lower shrinkage rate. The powder which has higher melt viscosity and lower melting heat becomes liquid more easily and therefore flows better during the sintering process due to a shorter chain molecular structure. The results of experimental work indicate that the melt viscosity, and part surface finish are correlated.
Volume: 6
Issue: 3
Page: 615-622
Publish at: 2017-06-01

Spotlight on Neuroimmunology: Illustrations from Neurodegenerative Diseases

10.11591/ijphs.v6i2.6645
Abdelaziz Ghanemi , Besma Boubertakh
The immune system plays key roles in the defense of the organism. However, the effects of the immune system are not limited to the immune functions and have impacts beyond the anti-pathogenes role. Indeed, neuroimmunology is a representative field of how the immune system affects non-immune biological and physio-pathological functions. Herein, we have selected a number of neurodegenerative diseases as illustrative examples to put a spotlight on this important field. Importantly, clarifying the links and interactions between the immune system and the nervous system represents key elements for the understanding neurodegenerative diseases since it will lead to new theories about the pathogenesis and the mechanisms underlying the related processes and thus, provide us with new data and novel tools to both describe the related pathways and develop new therapeutic approaches as well as diagnostic approaches and research methodologies based on such new discoveries.
Volume: 6
Issue: 2
Page: 146-150
Publish at: 2017-06-01

Improving Disaster Risk Reduction Preparedness and Resilience Approaches in Emergency Response Interventions in African Countries

10.11591/ijphs.v6i2.6031
Ernest Tambo
Increasing globalization, increasing intense urbanization and climate changes have been linked to communities’ hazards and disasters vulnerabilities reported across Africa. Less data and information are documented on national to community disaster risk workforce readiness and resilience capacity in emergency humanitarian crises interventions. The lack of coherent and integrated disaster risk analysis and preparedness, response and recovery programs implementation is a major challenged in the region for decades. This paper highlights natural and man-made emergency hazards and disasters nature and exposure, potential approaches in Africa context. Our findings showed that man-made disasters events were the most documented, uneven in their nature, pattern and trend of occurrence and exposure consequences over time. Emerging and re-emerging outbreaks (Cholera, Polio, HIV, Ebola, Influenza, Rift Valley fever and Meningitis) were the most common, followed by conflicts and hunger, floods and land-sliding disproportionately spread across Africa. We also documented differential inadequacies in effective community risk assessment to emergency management, weak community disaster risk knowledge and attitudes to poorly integrated mitigation and recovery strategies. Leveraging on digital and social media network platforms advances coupled with existing fire, emergency facilities and proven effective hazard/disaster response lessons learnt and experiences are resources in strengthening laboratory capacity and laboratory networks, scaling up proactive displaced people/refugee security and safety standards support and best practice. Strengthening the national Sendai Framework for Disaster Risk Reduction (SDRRF) stewardship and investment (2015-2030) implementation is crucial in improving evidence-based, robust, and effective disaster risk reduction (DRR) community-based programs, in ensuring emergency public health readiness and resilient response capacities and ownership strategies in Africa.
Volume: 6
Issue: 2
Page: 183-191
Publish at: 2017-06-01

Hippocampal Brain Derived Neurothropic Factor Levels in Response to Anaerobic Physical Exercises

10.11591/ijphs.v6i2.6643
Mohammad Zulkarnain , Rostika Flora , Juliastuti Juliastuti , Anita Apriany , Dewi Pujiana , Septi Andrianti
Anaerobic physical exercise does not only improve body fitness, but it also increases cognitive functions. The increase of cognitive functions is mediated by the increase of Brain Derived Neurothropic Factor (BDNF) level. Several studies revealed that anaerobic physical exercise can increase the BDNF level inhippocampal tissues. However, it is still questionable whether or notthe frequency of exercise influences the production of BDNF inhippocampal tissues. This study was to find out the BDNF mean level inhippocampal tissue of Wistarrats which were treated with anaerobic physical exercises conducted in different frequencies.This study used post test only control groupdesign. The research subject was 28 rats of Rattusnorvegicus strain wistar divided into 4 groups; 1 control group and 3 treatment groups (one-time, three-time, and five times a week treatment). The anaerobic physical exercise used animal treadmill running in the speed of 35m/min for 20 minutes at four-minute intervals. The mean levels of BDNF were increased in all treatment groups compared with control group (151.588 vs 57.059). The highest mean level of hippocampal tissue BDNF was found in the treatment group of three times a week (177.701). There was a significant difference in BDNF mean levels of Wistar rat brain tissues among the treatment groups.
Volume: 6
Issue: 2
Page: 134-139
Publish at: 2017-06-01

An Inventive and Innovative Alternate for Legacy Chain Pulling System through Internet of Things

10.11591/ijeecs.v6.i3.pp688-694
Budaraju Sri Datta , Rama Ganapathy , Sini Raj P , Shriram K Vasudevan , Abhishek SN
Indian Railways made a move in replacing the chain pulling system with the new mobile based communication system where the loco pilot’s mobile phone number shall be shared with all the passengers through a message. Despite the efforts taken to remove the chains from the train, there is a great probability of misuse through the mobile phone number provided. We aim to build a more efficient and secure solution based on the Internet of Things, which is a buzz word in the market. Our proposed system provides an alarm fixed at specific locations in the compartments of a train. In case of emergency, the passenger has to press the alarms’ button, which captures the scene using a built-in digital camera. The system also alarms the Loco-Pilot, Travelling Ticket Examiner, as well as the compartment so as to provide immediate possible help through the fellow co-passengers. The pilot slows down the train to an optimum speed whilst the travelling ticket examiner checks and confirms the pilot whether he has to stop the train. The entire system can be controlled through an authenticated mobile application provided to the ticket examiner. The pictures captured by the camera and other crucial details are uploaded to a cloud-based real-time database. Thus, saving time and taxpayers’ money as well as helping the railways to perform analytics and come up with feasible solutions to the problems of the passengers. The system has the potential to deal with the most prevailing cargo theft like that of coal, by alerting the staff without having to stop the train, making the convicts’ escapes impossible. This also definitely avoids the improper pulling of chains and thereby not causing any hassle to the passengers as well as diminishes the economic loss to the government by reducing the time delay.
Volume: 6
Issue: 3
Page: 688-694
Publish at: 2017-06-01

Sugar Sweetened Beverages Consumption among University Students of Bangladesh

10.11591/ijphs.v6i2.6635
Munmun Shabnam Bipasha , Tahsin Sharmila Raisa , Shatabdi Goon
Drinking large amounts of sugary beverages can increase the risk of gaining weight and developing Type 2 diabetes, heart disease, and other metabolic diseases. This study examined the preference, prevalence and pattern of sugar sweetened beverages consumption among university students of Bangladesh. A cross-sectional study was carried out from February to April, 2017 among students attending in a private university of Bangladesh. One hundred fifty undergraduates responded (83.4% male, 15.9% female) in this study. Most students (95.4%) reported sugared beverage intake and 53.6% reported more than two days in a week intake. Male students were more likely than female students to report regular sugary beverages intake (85.4% vs. 14.5%). The main reasons for fast food consumption were: good taste and refreshing (80.1%), cost effective (6.6%), easy accessibility (2.6%), increased convenience (8.6%), peer influence (1.3%). Good taste and price were the most important factors in choosing beverages. Coca-Cola (49%), Fanta (25.8%), Sprite(9.9%) and Slice(14.6%) has been reported as mostly consumed beverages among students. Most students (54.5%) reported sugary beverages purchase from neighborhood convenient stores. 94.5% students said that if they would provide with healthful beverages within their food environment, they would prefer drinking healthful beverages (lemon water, non-sugary beverages) instead of sugar beverages. Self-reported sugar-sweetened beverage consumption among undergraduates is substantial and likely contributes considerable non-nutritive calories, which may contribute to weight gain. Specific health education programs, dietary guidelines and effective public awareness campaigns could be initiated to address the unhealthy drinking pattern of university students and improve their health.
Volume: 6
Issue: 2
Page: 157-163
Publish at: 2017-06-01

Motivation as Mediator between Family Support to the Readiness of Pregnant Woman in Exclusive Breastfeeding

10.11591/ijphs.v6i2.7638
Sri Mulyani , A. A. Subiyanto , Sapja Anantanyu , Supriyadi Heri Respati , Budiyanti Wiboworini
The success of the implementation of exclusive breastfeeding in the community is depend on the readiness of pregnant mothers in exclusive breastfeeding. This readiness is influenced by several factors including motivation and support exclusive breastfeeding by family. This study aimed to examine the empirical model that shows the motivational role as mediators of the relationship between family support of readiness pregnant mothers in exclusive breastfeeding. Cross-sectional study performed on pregnant women in Surakarta. A sample of 150 respondents mother in her first time pregnancy. The closed questionnaire of Likert scale developed to measure three variables of the study. Path analysis procedure used to test the hypothesis of motivational role as mediator relations between two other variables. The results showed that all three variables had a significant relation (p <0.001). The relationship between family support to readiness pregnant women after entering motivation as covariates remained significant but decreased significantly path coefficient (β = 0.365; p <0.001 becomes β = 0.260; p = 0.001). Thus the motivation become a mediator relationship with the family support of readiness pregnant mothers in exclusive breastfeeding.
Volume: 6
Issue: 2
Page: 197-202
Publish at: 2017-06-01

Modelling and Efficiency-Analysis of Wireless Power Transfer using Magnetic Resonance Coupling

10.11591/ijeecs.v6.i3.pp563-571
Masood Rehman , Zuhairi Baharudin , Perumal Nallagownden , Badar ul Islam
Wireless power transfer (WPT) system has got significant attention in recent years due to its applications in consumer electronics, medical implants and electric vehicles etc. WPT is a promising choice in situations, where the physical connectors can be unreliable and susceptible to failure. The efficiency of WPT system decreasing rapidly with increasing air-gap. Many circuit topologies have been employed to enhance the efficiency of the WPT system. This paper presents the modelling and performance analysis of resonant wireless power transfer (RWPT) system using series-parallel-mixed topology. The power transfer efficiency analysis of the model is investigated via circuit theory. S-parameters have been used for measuring power transfer efficiency. Transient analysis is performed to realize the behavior of voltage and current waveforms using advanced design system (ADS) software. The proposed model is tested with two amplitudes i.e. 100 V peak-to-peak and 110 V peak-to-peak at the same frequency of 365.1 kHz. The overall result shows that the series-parallel-mixed topology model has higher efficiency at low coupling factor (K) for both voltage amplitudes.
Volume: 6
Issue: 3
Page: 563-571
Publish at: 2017-06-01

Impact of Dysmenorrhea and Health-seeking Behavior among Female Adolescents

10.11591/ijphs.v6i2.6644
Erni Gustina , Sitti Nur Djannah
Dysmenorrhea is one of common health problems to occur during menstrual period and influences women life quality. The aim of the study is to know the effect of dysmenorrhea and health-seeking behavior to teenage girl. This study belongs to observation analytic using cross sectional design. The sample is girls, which is as many as 188, at the age of 15 to 19. The data are taken through questionnaire containing several questions, such as age of the respondents, age of menarche, effect dysmenorrhea, attitude on dysmenorrhea, and health-seeking behavior. Bivariate analysis is used Chi Square test. The Prevalence of dysmenorrhea is 68.8%. The effect of dysmenorrhea to girls include the absence from school (9.6%), sleep disorders (25%), decreased appetite (25.5%), inability to do exercise (19.7%), and daily activity disruptions (9.6%). There was relationship between the attitude on dysmenorrhea and health-seeking behavior of female adolescents (p=0.029). Adolescents with positive attitude about menstrual problems will develop good health-seeking behavior during menstrual period compared to those who have negative attitude. The needs to design reproduction health program as well as updating the information to create girls awareness on their health management during dysmenorrhea are necessary.
Volume: 6
Issue: 2
Page: 140-145
Publish at: 2017-06-01

Comparative Study of Extension Mode Method in Reducing Border Distortion Effect for Transient Voltage Disturbance

10.11591/ijeecs.v6.i3.pp628-637
Saidatul Habsah Asman , Ahmad Farid Abidin
Wavelet transform is an essential method for preprocessing and analyzing non-stationary signal of power quality disturbances. Recently, power quality disturbances cause various effect which reduce the accuracy of the signal such as border distortion. This paper is presenting the comparative study on extension mode scheme to reduce border distortion effect in Discrete Wavelet Transform. The three different method namely zero padding, smooth padding of order 1 and symmetrization mode have been carried to observe their capability on reducing border distortion effectively. The implementation of these modes has been carried out in Matlab Software version R2014a. The analysis is considering the decomposition coefficient at level 4 with mother wavelet type Daubechies. With the aid of soft- threshold function, the noise and unwanted signal is effectively removed to recover the original signal. The comparative study provides the best mode to reduce border distortion effect with the presence of transient voltage is smooth padding of order 1.
Volume: 6
Issue: 3
Page: 628-637
Publish at: 2017-06-01

Neural Network Controller for Power Electronics Circuits

10.11591/ijai.v6.i2.pp49-55
K.J. Rathi , M. S. Ali
Artificial Intelligence (AI) techniques, particularly the neural networks, are recently having significant impact on power electronics. This paper explores the perspective of neural network applications in the intelligent control for power electronics circuits. The Neural Network Controller (NNC) is designed to track the output voltage and to improve the performance of power electronics circuits. The controller is designed and simulated using MATLAB-SIMULINK
Volume: 6
Issue: 2
Page: 49-55
Publish at: 2017-06-01

Cigarette Smoking Habits among University Students: Prevalence and Associated Factors

10.11591/ijphs.v6i2.6640
Junaid Jamshed , Muhammad Mushtaq Khan , Zahid Latif
Smoking is the main cause of morbidity and mortality in the world and is estimated to kill 5 million people each year worldwide. If current patterns of tobacco consumption continue, smoking will kill more than 8 million people each year globally by the year 2030, with 80% of these deaths in the developing countries. This study aimed to determine the prevalence and associated factors of cigarette smoking among male university students in Muzaffarabad, Pakistan. A descriptive cross-sectional study was conducted among 542 male students at University of Azad Jammu & Kashmir in Muzaffarabad from July to December 2015. The socio-demographic characteristics and cigarette smoking behavior of the students were measured by using a standardized pre-tested self-administrated validated questionnaire in English. The overall prevalence of cigarette smoking among students was found to be 49.4%. The mean age of starting cigarette smoking was 19.2 2.73 years. Age, marital status and education were found significantly associted with cigarette smoking behavior (p-value<0.05). The most common reason for cigarette smoking was stress alleviation (35.0%) followed by peer pressure (24.5%). As cigarette smoking is considerably higher among students. There is a need to develop effective tobacco control measures among university students in Muzaffarabad.
Volume: 6
Issue: 2
Page: 109-115
Publish at: 2017-06-01

Early Weaning Risk Factors for Acute Respiratory Infections

10.11591/ijphs.v6i2.6641
Eni Folendra Rosa , Gunardi Pome , D. Harsanto
Acute respiratory infections (ARIs) still a health problem in the world resulting in high mortality and morbidity. Every year 13 million children under five died, 95% of deaths occur in developing countries and 4.5 million deaths due to respiratory infection. Takes effort and hard work to reduce mortality of children under five are caused by ARIs. ARIs episodes in children under five in the world generally between 3-8 times every year. Breast milk is a natural nutrient that contain IgA (SIgA), IgE, IgM,  IgG, lactoferin, lysozyme, vitamin A, C and E. SIgA generated broncho mammary and α2--microglobulin substances that protect against syncytial virus and inhibit and lowering the risk of infection with Haemophilus influenzae contained in the mouth and nose. Babies who are not breastfed full or partial ARIs at greater risk due to lack of intake of protective substances in the breast milk. The incidence of acute respiratory diseases are at highest order resulting morbidity and mortality of children in the district OKU in 2014 amounted to 52.2% and increased by 53% in 2015. Unmatched case control study with a quantitative approach, the study subjects children aged 6-24 months. Data analysis using Stata program consists of univariable, bivariable and multivariable logistic regression with 95% CI. Significant relationship with ARIs early weaning (OR = 2.72  95% CI = 1.08 - 6.83). The average episode of ARIs was 2.8 times every year. Early weaning increase risk of ARIs in children 6-24 months.
Volume: 6
Issue: 2
Page: 116-123
Publish at: 2017-06-01

The Establishment of Child Health Cadre as Prevention for Foodborne Disease at Primary Schools

10.11591/ijphs.v6i2.6646
Fariani Syahrul , Chatarina U. W. , Arief Hargono
Personal health, including health on school-age children comes from food intake. But often, these foods can cause health problems, such as foodborne diseases. A quasi-experimental study was conducted to monitor the Clean and Healthy Lifestyle (CHL) of children at school through the establishment and evaluation of child health cadres. Phases of activities are the selection of child health cadres (10 children), training and determination of the child that will be monitored (40 children), preliminary assessment on the monitored CHL, two-month monitoring and final assessment. Monitored CHL are the CHL associated with foodborne diseases such as clean nails, snacks habit, habit of bringing lunch, and hand-washing habit in schools. Descriptive analysis showed that there were differences between the CHL school children before and after the monitoring conducted by child health cadres, however the results of the Chi-Square Test indicated that only the habit of bringing lunch that yield a significant change  (p=0.01). Evaluation of the routine activity showed that the average cadre activity on monitoring is 75.7% and the average of completeness monitoring books is 91.9%. The activities of child health cadres can be applied on an ongoing basis with the school health program activities that have been established in schools.
Volume: 6
Issue: 2
Page: 151-156
Publish at: 2017-06-01
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