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28,188 Article Results

Layout Optimization of Microsatellite Components Using Genetic Algorithm

10.12928/telkomnika.v15i1.3872
Mohammad; LAPAN Mukhayadi , Irman; Bogor Agricultural University (IPB) Hermadi , Soewarto; Pakuan University, Bogor. Hardhienata
The placement of satellite components usually belongs to non-deterministic polynomial-time hard (NP-hard) problems that in terms of computational complexity is very difficult to solve. This problem is normally known as layout optimization problem (LOP). In this study the layout of microsatellite components has to meet the requirements set by mission payloads, launcher and spacecraft attitude control. The novel scheme is to find the various possibilities of optimal layout using genetic algorithms combined with order-based positioning technique (OPT). Each component has a given index and then placed in a container based on specific order of placements in accordance with a bottom-left (BL) algorithm that is already established. The placement order is generated by the genetic algorithm which explore various possibilities to obtain a sequence that brings the best solution.
Volume: 15
Issue: 1
Page: 341-350
Publish at: 2017-03-01

A Mamdani Fuzzy Model to Choose Eligible Student Entry

10.12928/telkomnika.v15i1.4893
Agus; University of Computer Indonesian (UNIKOM) Nursikuwagus , Agis; Bandung Institute of Technology Baswara
This paper presented about study that have been created a new student choosing system by using fuzzy mamdani inference systems method. Fuzzy mamdani is used because it has characteristics such as human perceptions on choosing of students with some specified criteria. The choosing studens who want entry to the school have been difficult if it is manually process. With the fuzzy mamdani, the process can be possible completed execute and can be reduced the time of choose. To accomplish the process, the fuzzy variable is created by the national final exam scores, report grade, general competency test, physical test, interview and psychological test. Based on testing 270 data, the fuzzy mamdani has been reached 75.63% accuracy.
Volume: 15
Issue: 1
Page: 365-372
Publish at: 2017-03-01

Topology Design of Extended Torus and Ring for Low Latency Network-on-Chip Architecture

10.12928/telkomnika.v15i2.6134
Ng; University Malaysia Perlis Yen Phing , M. N.; University Malaysia Perlis Mohd Warip , Phaklen; University Malaysia Perlis Ehkan , F. W.; University Malaysia Perlis Zulkefli , R.; University Malaysia Perlis Badlishah Ahmad
In essence, Network-on-Chip (NoC) also known as on-chip interconnection network has been proposed as a design solution to System-on-Chip (SoC). The routing algorithm, topology and switching technique are significant because of the most influential effect on the overall performance of Network-on-Chip (NoC). Designing of large scale topology alongside the support of deadlock free, low latency, high throughput and low power consumption is notably challenging in particular with expanding network size. This paper proposed an 8x8 XX-Torus and 64 nodes XX-Ring topology schemes for Network-on-Chip to minimize the latency by decrease the node diameter from the source node to destination node. Correspondingly, we compare in differences on the performance of mesh, full-mesh, torus and ring topologies with XX-Torus and XX-Ring topologies in term of latency. Results show that XX-Ring outperforms the conventional topologies in term of latency. XX-Ring decreases the average latency by 106.28%, 14.80%, 6.7 1%, 1.73%, 442.24% over the mesh, fully-mesh, torus, XX-torus, and Ring topologies.
Volume: 15
Issue: 2
Page: 869-876
Publish at: 2017-03-01

An Adaptive Controller for Photovoltaic Emulator using Artificial Neural Network

10.11591/ijeecs.v5.i3.pp556-563
Razman Ayop , Chee Wei Tan
The photovoltaic (PV) emulator is a nonlinear power supply that features the similar characteristic of the PV module. However, the nonlinear characteristic of the PV module causes instability of the PV emulator output. The conventional solution is to operate the PV emulator in the overdamped condition which results in a poor dynamic performance. This drawback is solved by manipulating the proportional and integral gains of the proportional-integral (PI) controller. In this paper, the artificial neural network is used in the adaptive PI controller to maintain a stable and fast dynamic response of the PV emulator. This has been simulated with varied output resistance and irradiance. By comparing the proposed control strategy with the conventional method during start-up response of the photovoltaic emulator, the dynamic performance of the output current has shown an improvement of up to 80 % faster than the conventional method.
Volume: 5
Issue: 3
Page: 556-563
Publish at: 2017-03-01

Prevention of Nosocomial Infection through Application of Housekeeping

10.11591/ijphs.v6i1.6538
Qomariyatus Sholihah , Aprizal Satria Hanafi
The hospital has a high risk of nosocomial infection. Nosocomial infection can infect patients in hospital and can inhibit the patient's recovery, even worsen a patient. The purpose of this study was to determine the relationship of the application of housekeeping with the total number of germs floor as prevention nosocomial infection in the treatment room Roses in Ulin Hospital Banjarmasin, Indonesia. The study design was observational analytic. The study population was all Roses class treatment rooms. The samples were taken from the floor germs 4 point class treatment rooms in hospitals Rose Ulin. Sampling was conducted in the first week and the second week in November 2015. Paired t-test results showed no relationship between the applications of housekeeping with the total number of germs floor with a p-value 0.015.This study found there was decreasing the total number of germ on the floor in all rooms. It is hoped that the hospital to continue to pay attention to the condition of the hospital, especially in terms of hygiene in order to avoid transmission of germs or nosocomial infections due to bacteria originating from the floor.
Volume: 6
Issue: 1
Page: 91-95
Publish at: 2017-03-01

Ethnicity, Obesity, and Type 2 Diabetes of Adults in Urban Populations of Central America

10.11591/ijphs.v6i1.6529
William G Wuenstel , James A. Johnson , James Humphries , Cheryl Samuel
The purpose of this meta-analysis was to examine the impact of ethnicity and obesity as it relates to Type-2 Diabetes (T2D) in specific Central American countries. A meta-analysis was conducted to determine the association of ethnicity, obesity, and T2D.  Four studies that qualified for inclusion were identified by searching MEDLINE and PubMed databases. The studies on the association of ethnicity and T2D had a combined population resulted in 265,858 study participants.  Two studies on the association of obesity and T2D had 197,899 participants. An analysis of the data was conducted utilizing the relative risk ration, odds ratio, and forest plots. The comparison of the relative risk of T2D across ethnic categories by studies range for Blacks was 1.59 to 2.74, Asians was 1.43 to 2.08, and Hispanics .92 to 2.91. The ethnic difference in the prevalence of diabetes was almost two-fold higher in all ethnic groups than among the Caucasians with a significance level of 95%. A comparison of relative risk of T2D across weight categories was significantly higher among those with a diagnosed of diabetes in all reported areas. The odds ratio was very close to the risk ratio in both ethnicity and obesity to the development of T2D.The meta-analysis findings documented that an association does exist between ethnicity and obesity to the development of type 2 diabetes.
Volume: 6
Issue: 1
Page: 27-32
Publish at: 2017-03-01

The Effect of Rekattidiri Ovitrap towards Aedes aegypti Larval Density

10.11591/ijphs.v6i1.6536
Malik Saepudin , Soeharyo Hadisaputro , Ari Suwondo , Suhartono Suhartono
Dengue Hemorrhagic Fever (DHF) is a health problem in Indonesia. The entire region of Indonesia at risk of contracting dengue disease. The study aims to prove the effect of modifications ovitrap rekattidiri on the density of larvae (HI: House Index, CI: Container Index and BI: Breteu Index) as well as comparing the differences between the mean larvae trapped between ovitrap Rekattidiri with standard ovitrap. Using a quasi experimental design, time series experimental design with Control group. Population subjects were Aedes aegypti at the endemic sites in Pontianak, West Borneo. The results showed larval density index in the intervention area decreased each ie HI from 26% to 3%, CI of 6.95% to 2.19 %, and BI from 29% to 13%. The number of larvae trapped in ovitrap rekattidiri ie 70% (12,770 larvae) more than the standard ovitrap in the control and intervention, namely: 17% (3,057 larvae) and 13% (2,334 larvae). It is concluded that there are significant modifications Rekattidiri ovitrap against larval density index (HI p-value: 0.025, CI p-value: 0.052, BI value of p: 0.04) and there are differences between the mean larvae trapped in ovitrap Rekattidiri and standard ovitrap with p value: 0.001.
Volume: 6
Issue: 1
Page: 78-84
Publish at: 2017-03-01

Opinion of Healthcare Professionals in the Usage of Social Media for Patient Care in Majmaah, Saudi Arabia

10.11591/ijphs.v6i1.6527
Syed Meraj Ahmed , Faisal Alhumaidi Alruways , Thamer Fahad Alsallum , Meshal Munahi Almutairi , Abdullah Saif Al-Subhi , Ahmed Abdulaziz Ababdulkarim
Use of social media for patient care is the new frontier in the healthcare indus-try. Sharing of information between the clinicians and their patients is now so much easier. In slowly gaining a foothold worldwide it needs a healthy push to make it universally accepta-ble. Study the knowledge, attitude, and practices of healthcare providers on the usage of social media in their clinical practice.A baseline cross–sectional study was conducted among 200 healthcare professionals from March 2015 to September 2015 on their knowledge, attitude, and practices in the use of social media for patient care in Majmaah, Saudi Arabia. A close ended self – administered validated questionnaire was used to gather data which was analyzed by using the SPSS ver. 21.0 software. 55.3% participants used social media for both professional and personal reasons. Some (25.3%) specified using it for patient care while a significant majority (52.9%) opined that it can be successfully used for patient interaction. Nearly 55% agreed that social media should not be banned due to its benefits as an efficient tool for patient communication. Social media use for pa-tient doctor interaction should be encouraged to improve patient care through effective communication.
Volume: 6
Issue: 1
Page: 13-20
Publish at: 2017-03-01

New Method of Optimal Design of Electrical Rotating Machines

10.11591/ijeecs.v5.i3.pp479-487
Flur Ismagilov , Vyacheslav Vavilov , Valentina Ayguzina , Vladimir Bekuzin
The article presents a new method of the optimal design of the electrical rotating machine based on genetic algorithm. The mathematical description of the proposed algorithm is developed, and the optimal design of the high-speed electrical rotating machine by proposed method is performed. A new method for optimal design allows obtaining a new electrical rotating machine which mass is lower than mass of the initial electrical rotating machine by two times; the value of the rotor active length is lower by 2.37 times and the current density is higher by 1.7 times in comparison with the initial electrical rotating machine. The losses are increased by only 25 percent (power, rotation frequency and materials of both electrical rotating machine are the same).
Volume: 5
Issue: 3
Page: 479-487
Publish at: 2017-03-01

Mammography Image Segmentation: Chan-Vese Active Contour and Localised Active Contour Approach

10.11591/ijeecs.v5.i3.pp577-583
Mahfuzah Mustafa , Hana Najwa Omar Rashid , Nor Rul Hasma Abdullah , Rosdiyana Samad , Dwi Pebrianti
Breast cancer is one of the most common diseases diagnosed among female cancer patients. Early detection of breast cancer is needed to reduce the risk of fatality of this disease as no cure has been found yet for this illness. This research is conducted to improve the Gradient Vector Flow (GVF) Snake Active Contour segmentation technique in mammography segmentation. Segmentation of the mammogram image is done to segment lesions existence using Chan-Vese Active Contour and Localized Active Contour. Besides that, the effectiveness of these both methods are then compared and chosen to be the best method. Digital Database of Screening Mammograms (DDSM) is used for the purpose of screening. First, the images undergo pre-processing process using the Gaussian Low Pass Filter to remove unwanted noise. After that, contrast enhancement applied to the images. Segmentation of mammograms is then conducted by using Chan-Vese Active Contour and Localized Active Contour method. The result shows that Chan-Vese technique outperforms Localized Active Contour with 90% accuracy.
Volume: 5
Issue: 3
Page: 577-583
Publish at: 2017-03-01

Human Resource Practices in Public Healthcare Sector: A Perceptual Study among Healthcare Professionals

10.11591/ijphs.v6i1.6532
Sumathi G N
The study is aimed to identify various human resource practices in the public healthcare sector and to measure the level of human resource practices. The study adopts the perceptual view of healthcare professionals such as medical officers and staff nurses working in Primary Health Centres of Tamilnadu. A survey using a questionnaire is used to collect data from healthcare professionals. The results indicated that human resource practices such as job autonomy and job security are perceived to be useful and necessary, while training and performance management system are found to provide necessary inputs for carrying job duties and practices such as career growth opportunities and compensation need the attention of the officials of Health and Family Welfare department of Tamilnadu Government for enhancing the utility of these practices.
Volume: 6
Issue: 1
Page: 51-56
Publish at: 2017-03-01

Analysis of Transistor Open Fault Diagnosis for Shunt Active Power Filters

10.11591/ijeecs.v5.i3.pp521-529
Benyettou Loutfi , T. Benslimane
In this paper a transistor open-circuit fault diagnosis problem in two-level voltage inverter controlled shunt active power filter drives was discussed. Taking into consideration requirements of the contemporary monitoring drive systems original transistor fault diagnostic technique were proposed. Presented results were obtained by designed in PSIM software simulation model.
Volume: 5
Issue: 3
Page: 521-529
Publish at: 2017-03-01

Supplementation of Vitamin A and D in the Medication of Lung Tuberculosis

10.11591/ijphs.v6i1.6537
Rita Dian Pratiwi , Dibyo Pramono , Iswanto Iswanto , Junaedi Junaedi
At District of Wonosobo, Indonesia incidence rate of lung tuberculosis(TB) is increasing over years. In 2011 sputum conversion rate had reached 83.8%. Incidence rate of lung TB is still relatively high. This is influenced by many factors, one of which is the process of transmission. Potential of transmission may still occur until end of intensive medication (2 months). Vitamin A and D as immunoprotection can be used as supplements that can accelerate sputum conversion. To find out effect of vitamin A and D supplementation in accelerating sputum conversion of lung TB patients during intensive phase. The study was true experimental (double blinded randomized controlled trial). Subject of the study consisted of two groups; one comprised as many as 30 positive acid fast bacillus lung TB patients supplemented with vitamin A at dosage of 1 x 5000 IU/day and vitamin D at dosage of 1 x 400 IU/day whereas another group was placebo during intensive phase. There was effect of vitamin A and D supplementation to acceleration of sputum conversion with score of p 0.003; HR 2.45. Sputum conversion acceleration occurred in the experiment group during the second week with vitamin A and D supplementation as much as 86%. Vitamin A and D supplementation could accelerate the incidence of sputum conversion as much as 2.45 times greater than placebo group; thus vitamin A and D could be used as complementary supplements in the medication of lung TB medication during intensive phase.
Volume: 6
Issue: 1
Page: 85-90
Publish at: 2017-03-01

Knowledge about Obstetric Danger Signs and Associated Factors among Antenatal Care Attendants

10.11591/ijphs.v6i1.6528
Mulugeta Shegaze
Knowledge of mothers about obstetric danger sign is the basic influencing factor for utilization of skilled maternal and neonatal cares which reduce maternal and new born mortality and morbidity. Therefore this study intended to assess knowledge about obstetric danger sign and identify associated factors among antenatal care attendants. Institutional based cross- sectional study was conducted from April to June 2015 among 358 randomly selected antenatal care attendants. Epi Info version 7 and SPSS version 20 software were used for data entry and analysis respectively. Logistic regression was run to look for the association between dependent and explanatory variables; and using variables which have p-value ≤ 0.25 binary logistic regression was fitted. Association presented in Odds ratio with 95% confidence interval and significance determined at P-value less than 0.05. Most of the respondents able to name some of the accepted danger signs. Two hundred eight (58%), 182(51%) and, 161(45%) of mother were knowledgeable for obstetric danger sign which could occur during pregnancy, at child birth and post-partum period respectively. The most mentioned dander signs were bleeding, retained placenta and prolonged labor. The factors that associated with Knowledge of obstetric danger signs were urban residence (AOR=2.6; 95% CI: 1.8, 4.2), being literate (AOR=2.54; 95% CI: 1.14, 5.76), multiparity (AOR 1.5; 95% CI: 1.14, 2.3) and being informed (AOR=3; 95% CI: 1.6, 6.4). The study showed that attendant’s knowledge was low. This could be averted through strategies designed to address women’s through health extension workers and health professionals.
Volume: 6
Issue: 1
Page: 21-26
Publish at: 2017-03-01

Interference and Electromagnetic Compatibility Challenges in 5G Wireless Network Deployments

10.11591/ijeecs.v5.i3.pp612-621
Idrissa Abubakar , Jafri Din , Manhal Alhilali , Hong Yin Lam
5G wireless network technology is going operate within the environment of other electrical, electronic and electromagnetic devices, components and systems, with capability of high speed data connectivity acting as network transceiver stations with Massive MIMO for Internet of Things (IoT). Considering the level of interoperability, electromagnetic Interference and electromagnetic compatibility to avoid electromagnetic pulse effects (EMP) which is capable of not only causing network malfunctions but total devices and equipments failure in mission critical operations, like hospital MRI scan machines, security profiling and data handling or even personal healthcare devices like heart pacemaker. Electromagnetic energy coupling in PCB due to: radiation, reflection and Crosstalk generates reliability challenges affecting Signal Integrity between traces of multilayer boards stalks, power bus and packaging creating Electromagnetic interference (EMI) in PCB leading false clock response to system failure. Above were considered very essential when deploying 5G wireless network facility as presented in this paper. 
Volume: 5
Issue: 3
Page: 612-621
Publish at: 2017-03-01
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