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29,939 Article Results

Amazigh-Sys: Intelligent system for recognition of amazigh words

10.11591/ijai.v10.i2.pp482-489
Rachid Ammari , Lahbib Zenkouar
Amazigh-sys is an intelligent morphological analysis system for Amazigh language based on xerox’s finite-state transducer (XFST). Our system can process simultaneously five lexical units. This paper begins with the development of Amazigh lexicon (AMAlex) for attested nouns, verbs, pronouns, prepositions, and adverbs and the characteristics relating to each lemma. A set of rules are added to define the inflectional behavior and morphosyntactic links of each entry as well as the relationship between the different lexical units. The use of finite-state technology ensures the bidirectionality of our system (analysis and generation). Amazigh-sys is the first general morphological analysis system for Amazigh based on xerox finite state able to process and recognize all lexical units and ensures a high recognition rate of input words. This contribution facilitates the implementation of other applications related to the automatic processing of the Amazigh language.
Volume: 10
Issue: 2
Page: 482-489
Publish at: 2021-06-01

Fire-fighting UAV with shooting mechanism of fire extinguishing ball for smart city

10.11591/ijeecs.v22.i3.pp1320-1326
Nastaran Reza Nazar Zadeh , Ameralden H. Abdulwakil , Mike Joshua R. Amar , Bernadette Durante , Christian Vincent Nico Reblando Santos
With the growth of technology and massive city development, firefighting services have become more challenging to cope with a smart-city concept. One of the challenges that firefighters are facing is reaching the top floors of high-raised buildings. Firefighters need heavy and oversized pieces of equipment to reach top floors, which they sometimes fail to deliver on time due to big cities' traffic. The proposed solution to this global problem is using firefighting unmanned aerial vehicle (UAV) to reach the top floors fast and efficiently; It can also provide a better vision for the firefighting team and slow down the spread of fire using fire extinguishing ball. In this paper, a noble design for a Firefighting UAV with shooting and dropping mechanism of fire extinguishing ball has been developed and successfully tested. A Camera with night vision has been integrated into the UAV to provide a helpful aid for firefighters. The UAV has a controller with a 2.4 GHz radio frequency (RF) signal and video surveillance to regulate the UAV's movement. The controller is also for activating the shooting and dropping mechanism. The researchers examined the behavior of the drone in terms of its stability and functionality.
Volume: 22
Issue: 3
Page: 1320-1326
Publish at: 2021-06-01

Healthy family index assessment through community-based health information system approach

10.11591/ijphs.v10i2.20751
Rico Kurniawan , Ryza Jazid Baharuddin Nur , Sayekti Yuliyanti , Dion Zein Nuridzin , Neng Tine Kartinah
The healthy Indonesia program with a family approach (PIS-PK) has not been implemented optimally. There are several obstacles and challenges in this program’s implementation, e.g., human resources. A community-based health information system (CBHIS) is a strategic approach to obtain data and information at the population level by directly involving cadres and the community. A project with the CBHIS approach was implemented in Kasemen Village, Serang, Banten Province, Indonesia to support the PIS-PK program. The study aimed to determine the population’s health status according to the healthy family index through the CBHIS approach. The data of healthy family indicators in the village were collected by cadres using a mHealth application. Overall, 1316 households consisting of 5312 residents were registered. The analysis results of the healthy family index showed that most families in the Kasemen subdistrict were pre-healthy (64.2%), almost one third were unhealthy (27.8%) and only a small proportion were healthy (8%). Assessing the healthy family index through the CBHIS approach can support decision-making at the community level, thereby determining the magnitude of family health problems and providing appropriate interventions to improve community health status. Well-trained cadres equipped with better electronic data collection tools may be an alternative to community-based data collection.
Volume: 10
Issue: 2
Page: 394-400
Publish at: 2021-06-01

Automated tumor segmentation in MR brain image using fuzzy c-means clustering and seeded region methodology

10.11591/ijai.v10.i2.pp284-290
Mustafa Zuhaer Nayef AL-Dabagh
Automated segmentation of a tumor is still a considerably exciting research topic in the medical imaging processing field, and it plays a considerable role in forming a right diagnosis, to aid effective medical treatment. In this work, a fully automated system for segmentation of the brain tumor in MRI images is introduced. The suggested system consists of three parts: Initially, the image is pre-processed to enhance contrast, eliminate noise, and strip the skull from the image using filtering and morphological operations. Secondly, segmentation of the image happens using two techniques, fuzzy c-means clustering (FCM) and with the application of a seeded region growing algorithm (SGR). Thirdly, this method proposes a post-processing step to smooth segmentation region edges using morphological operations. The testing of the proposed system involved 233 patients, which included 287 MRI images. A comparison of the results ensued, with the manual verification of the traces performed by doctors, which ultimately proved an average Dice Coefficient of 90.13% and an average Jaccard Coefficient of 82.60% also, by comparison with traditional segmentation techniques such as FCM method. The segmentation results and quantitative data analysis demonstrates the effectiveness of the suggested system.
Volume: 10
Issue: 2
Page: 284-290
Publish at: 2021-06-01

Community mobility reports predict the national spread of COVID-19 in Indonesia in the new normal era

10.11591/ijphs.v10i2.20635
Muhammad Syahrul Ramadhan , Rizma Adlia Syakurah
Indonesia government encouraging to new normal life with obeys the health protocol. In Malaysia, the new normal had a significant impact on mobility trends. This study aimed to analyze the community mobility trend (including six categories) and coronavirus disease (COVID-19) daily cases in Indonesia in new normal era. An observational analytic using cross-sectional design. The community mobility data, include mobility trends for six different location categories, were obtained from Google COVID-19 Community Mobility Reports from May 15-July 14, 2020. The Indonesian’s COVID-19 daily cases data were taken from (http://covid19.go.id//) from May 15-July 17, 2020. Time-lag correlation to analyzed community mobility of each location category and COVID-19 daily cases in Indonesia using Pearson Correlation with significance ≤0.05. Recreation, parks, and transit stations have positively strong to very strong, while the residential has negatively strong, and the grocery and pharmacy and workplaces were positively weak to moderate correlations. The community mobility was significantly correlated with the COVID-19 transmission in Indonesia during new normal era, especially in transit stations, retail and recreation. Indonesia government is expected to improve their effort to manage the COVID-19 transmission and consider new policy to curb the COVID-19 transmission.
Volume: 10
Issue: 2
Page: 380-386
Publish at: 2021-06-01

Investigating communicative barriers on construction industry productivity in Malaysia: An overview

10.11591/ijere.v10i2.21163
Khairul Firdaus Ne'Matullah , Lim Seong Pek , Siti Aisyah Roslan
The evolution of technology has changed the way how human communicate in the current time. With the advancement of technology, instructions and messages could be delivered in a split second. Even though life is made easy with technology, some information and details should be delivered face-to-face in order to avoid communication breakdown. This study was carried out to determine the language needs by foreign workers working at construction sectors in Malaysia. The study created an overview on how communication affects productivity in completing tasks on time. The results from this study lead to a development of language modules for foreign workers training. An online survey was carried out through social media on construction site supervisors around Malaysia in getting their feedback related to the origin of their co-workers and the importance of English language as medium of instruction for task fulfilment. Results indicated that language barriers had affected productivity in the sector of construction in Malaysia. Besides, results also noted that cross-cultural differences had put foreign workers at risk and caused wastage to time and manpower.
Volume: 10
Issue: 2
Page: 476-482
Publish at: 2021-06-01

Voltage profile improvement of weak grid with solar PV integration

10.12928/telkomnika.v19i3.17736
Sandeep; National Institute of Technology Andhra Pradesh Vuddanti , Varun N.; Central University of Karnataka John , Surender Reddy; Woosong University Salkuti
The objective of this paper is to improve the voltage profile of the grid in pertinence to grid due to power injection from distributed solar photovoltaic (PV) arrays. Weak grids are modeled as worldwide adaptation of net metering, transactive energy systems, and the possibility of further deterioration of power quality with higher grid penetration. In this paper, a solar PV integrated weak distribution grid modelled as the PV arrays being frequently connected in rural areas, due to various reasons like cheap real estate and lack of accessibility. In this paper, three case studies of PV generation are simulated, i.e., scheduled solar PV generation less than load requirement, PV generation equal to load requirement, and PV generation more than load requirement, by considering the daily solar irradiation and load demand profiles of a residential area under study.
Volume: 19
Issue: 3
Page: 968-976
Publish at: 2021-06-01

High-resolution rotor-position detection for green vehicle drives at halt condition with statistical view

10.12928/telkomnika.v19i3.18794
Mazen M. A.; University of Al-Qadisiyah Al Ibraheemi , Fatih J.; Cardiff University Anayi , Zainb Hassan; University of Al-Qadisiyah Radhy , Hayder; Islamic University Al Ibraheemi
Considerations around environmental pollution and green energy usage have led to environmentally-friendly machines being used in many industrial applications. Permanent magnet (PM) machines are the best solution to substitute the pollutant diesel-powered machines. In such machines, rotor position detection is crucial for safe startup operating. Meanwhile, encoderless controllers have become more reliable, over the years, in supporting the operation of PM machines. The key point, presented by this paper, is to introduce an improved positioning model to detect the rotor-position of interior permanent magnet synchronous machine at halt condition. To verify this objective, only two short duration pulses were injected into the stator windings. Then, the corresponding terminal voltage and current responses were measured and employed to create two memory address lines. Thereby, the memory cells, which contain the rotor position information, could be accessed. This detection model makes a significant improvement in rotor positioning detection of high resolution (1 degree) which represents lower value than most verified results in literature. The model was simulated and tested in a MATLAB/Simulink environment and shows an approximate accuracy 95%. Additionally, the statistical analysis was also employed to support the work outcomes.
Volume: 19
Issue: 3
Page: 983-990
Publish at: 2021-06-01

Assessment of precautionary measures against COVID-19 in Indonesian workplaces

10.11591/ijphs.v10i2.20663
Muhammad Ricky Pratama , Agung Supriyadi , Nurhalina Sari
As the coronavirus disease 19 (COVID-19) pandemic spread across Indonesia, the precautionary measures have been taken by nearly all stakeholders, including industries and employers. The purpose of this study is to assess the measures took against COVID-19 pandemic in the workplaces across the country. This research involved participants from 103 different companies using a questionnaire adapted from Better Work Indonesia (BWI), occupational safety and health association (OSHA) and centers for disease control and prevention (CDC) COVID-19 guidelines. The data analysis conducted with descriptive statistics that resulted with the following key findings. Indonesian companies have taken precautionary measures against COVID-19 at their workplace. Most aspects of COVID-19 preventive measures: policy and procedure, operational aspect, health and safety, and external activities have been observed by the vast majority of the subjects. This study found that among 30 COVID-19 programs, the emergency exercise at work was the only one that had not been conducted by more than half of respondents. As the number of active cases still growing at the time this study conducted, all precautionary measures against COVID-19 shall be carried out with consistency by the company management).
Volume: 10
Issue: 2
Page: 281-288
Publish at: 2021-06-01

Relative share, frequency and correlation of restorations in both dental dentitions in childhood

10.11591/ijphs.v10i2.20716
Dobrinka Mitkova Damyanova , Radosveta Andreeva-Borisova
This research aimed to analyze of the relative share, frequency and correlation of restorations in both dental dentitions in childhood. The decayed, missing, and filled permanent teeth (DMFT) index is one of the most commonly used indices in epidemiologic surveys of dental caries. It quantifies dental health status based on the number of carious, missing and filled teeth. A total of 602 schoolchildren in Varna, aged 3-18 years were selected for this study. The children have a determined high caries risk DMFT index >1. The patients are divided into 16 groups according to age limit. The research takes place in the Faculty of Dental Medicine, Medical University of Varna, in the time period 2016-2018. This study is retrospective, based on medical data of the participants. Pearson's correlation and simple linear regression were used to estimate the correlation between restorations, DMF (T+t) and age. The average value of determining the level of caries of the examined groups of children is DMF (T+t) =5.46±3.95 (range 0-20). With the correlation analysis we proved a direct dependence of the ratio. The number of preventive fillings with photopolymers and composites increased with increasing age of the studied children (r=0.725; p<0.001). Their high distribution among the studied patients was established by determining the average frequency of carious lesions. The correlation analysis determined that with increasing age of the patients the number and frequency of composite restorations and sealants in the control groups increased.
Volume: 10
Issue: 2
Page: 241-248
Publish at: 2021-06-01

Heat and temperature metacognition awareness inventory: A confirmatory factor analysis

10.11591/ijere.v10i2.20917
Moh. Irma Sukarelawan , Dwi Sulisworo , Jumadi Jumadi , Heru Kuswanto , Siti Anisatur Rofiqah
This cross-sectional study aimed to validate students' metacognition awareness inventory in Heat and Temperature material. A total of 167 public senior high school students in Yogyakarta, Indonesia were selected through convenience sampling technique. The heat and temperature metacognition awareness inventory (HeTMAI) inventory consists of six factors, namely: 1) Knowledge of cognition; 2) Planning; 3) Monitoring; 4) Evaluation; 5) Debugging; and 6) Information management. HeTMAI used a 5-point Likert scale. The data was analyzed using the confirmatory factor analysis (CFA) method through the Maximum Likelihood approach. All statistics were found to meet acceptance values. The four GOF indices (χ2/df=2.36, CFI=0.97, TLI=0.97, and SRMR=0.06) have supported the fit of the six-factor HeTMAI model. Standardized factor loading (SFL), construct reliability (CR), average variance extracted (AVE) and discriminant values provide evidence that HeTMAI has sufficient convergent and discriminant validity. Cronbach's alpha value of 0.96 indicated HeTMAI has very adequate evidence of reliability.
Volume: 10
Issue: 2
Page: 389-395
Publish at: 2021-06-01

Chirplet signal design by FPGA

10.11591/ijece.v11i3.pp2120-2127
Mohammed Jawad Al-Dujaili , Aws Majeed Al-Awadi
The ever-expanding growth of the electronics and communications industries present new challenges for researchers. One of these challenges is the generation of the required bandwidth signal over a specific time frame that is used in a variety of contexts, particularly radar systems. To improve the range resolution in the radar along with better SNR, it is necessary to reduce the signal bandwidth and increase the peak power. There are some restrictions for narrowband signals like power limitation, pulse shaping, and the production of unwanted harmonics. So as a solution pulse compression techniques are suggested. Pulse compression is a process that modulating the transmitted pulse to achieve a wideband signal and then at the receiver, the received signal correlates with the transmitted pulse to achieve narrowband representations of data. Chirp is the most common signal used in pulse compression. The chirp signal is produced using linear frequency modulation. In this study, we attempted to add an amplitude modulation to the chirp signal and evaluate its performance by implementation on FPGA. The outcome signal is called chirplet and simulation will show that it enhance target detection and image quality in imaging radars like SAR.
Volume: 11
Issue: 3
Page: 2120-2127
Publish at: 2021-06-01

Enhanced the accuracy of idle time in cognitive radio network

10.12928/telkomnika.v19i3.18770
M. H.; Universiti Teknikal Malaysia Melaka (UTeM) Mohamad , A.; Universiti Putra Malaysia Sali , R.; Universiti Kebangsaan Malaysia Bangi Nordin
This paper addresses the essential part of modelling primary user (PU) activity pattern in the time domain, which involved choosing the best distribution fit to represent idle and busy time. The accurate PU activity model plays a vital role in developing high-performance cognitive radio (CR) network. This work formulates the PU activity model by using the empirical data measured from wireless local area network (WLAN) testbed. The detected idle time analysed in this work in two different scenarios, then a statistical approach performed to find the best fits. The finding shows the generalised Pareto (GP) distribution as the best fit with DKS=0.266 compared to other distribution fits.
Volume: 19
Issue: 3
Page: 730-737
Publish at: 2021-06-01

Formative assessment in the translation classroom: Closing a feedback loop

10.11591/ijere.v10i2.21274
Sofiya Nikolaeva , Tetiana Korol
Feedback as the key component of formative assessment was studied extensively in the context of the acquisition of the foreign language productive skills by different categories of learners. Similarly, this paper aimed at the investigation of the optimal design of the feedback loop in teaching translation to undergraduate students. A mixed-methods research involved 40 sophomores of Poltava University of Economics and Trade and was conducted during 2018–2019 academic year. It examined the efficacy of four feedback response types from both quantitative and qualitative perspectives. Sample Group 1 had to study the received teacher feedback arbitrarily and consider it, while working on their further translations. Sample Group 2 was required to prepare a written free-form self-reflection report on the teacher feedback. Sample Group 3 was supposed to resubmit their corrected translations to the teacher. Finally, Sample Group 4 had to accompany their self-reflection reports with the corrected translations. The obtained data showed statistically significant difference between the acquired levels of the translation skills by the students of the four sample groups. The highest results were achieved due to the combination of self-reflection reports and translation correction. The questionnaire on the students’ attitude to these practices proved the received statistical data.
Volume: 10
Issue: 2
Page: 738-746
Publish at: 2021-06-01

Relationship of knowledge and attitude with food handling practices: A systematic review

10.11591/ijphs.v10i2.20665
Kholis Ernawati , Qatrunnada Nadhifah , Anis Muslikha , Muhammad Hidayat , Tri Edhi Budhi Soesilo , Fathul Jannah , Dini Widianti , Yusnita Yusnita
Foodborne disease is still a public health problem in several countries. Food handler's knowledge, attitude, and practice (KAP) are factors that are risk factors for foodborne disease incidence. The research objective was to assess the level of knowledge, attitudes, and behavior of food handlers in maintaining food hygiene using a systematic review approach. The research method used is the preferred reporting items for systematic review and meta-analyses (PRISMA) protocol approach. The article search process was accessed on PLOS ONE, Pro-Quest, and Google Scholar. A descriptive analysis was carried out on each research variable. The results obtained eight papers (100% sociodemography, 100% knowledge, 62.5% attitude, and 87.5% behavior). The mean of significant articles on sociodemographic variables was 18.5%, experience 59.38%, attitudes 13.33%, and 23.81%. There are 37.5% of the articles showed significant relationship between knowledge and attitude with food handling practice.
Volume: 10
Issue: 2
Page: 336-347
Publish at: 2021-06-01
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