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29,734 Article Results

A Comprehensive Survey on Comparisons across Contextual Pre-filtering, Contextual Post-filtering and Contextual Modelling Approaches

10.12928/telkomnika.v15i4.6875
Khalid; University of Malaya Bayero University, Malaysia Haruna , Maizatul; University of Malaya, Malaysia Akmar Ismail , Damiasih; Sekolah Tinggi Pariwisata Ambarrukmo, Indonesia Damiasih , Haruna; Federal College of Education (Technical) Gombe, Nigeria Chiroma , Tutut; Politeknik Negeri Malang Sekolah Tinggi Pariwisata Ambarrukmo Universitas Teknologi Yogyakarta, Indonesia Herawan
Recently, there has been growing interest in recommender systems (RS) and particularly in context-aware RS. Methods for generating context-aware recommendations are classified into pre-filtering, post-filtering and contextual modelling approaches. In this paper, we present the several novel approaches of the different variant of each of these three contextualization paradigms and present a complete survey on the state-of-the-art comparisons across them. We then identify the significant challenges that require being addressed by the current RS researchers, which will help academicians and practitioners in comparing these three approaches to select the best alternative according to their strategies.
Volume: 15
Issue: 4
Page: 1865-1874
Publish at: 2017-12-01

Combining Parameters of Fuel and Greenhouse Gas Costs as Single Objective Function for Optimization of Power Flow

10.12928/telkomnika.v15i4.5769
Ignatius; Universitas Sepuluh November Surabaya, Indonesia Riyadi Mardiyanto , Hermagasantos; Bandung State of Polytechnic, Indonesia Zein , Adi; Sepuluh November Institute of Technology, Indonesia Soeprijanto
The Kyoto Protocol is a protocol that highlights on greenhouse gases that have been adopted by many countries. Based on this protocol, power plants that produce emissions are encouraged to pay compensation. Conventionally, optimization of fuel mix in the electric power system components has not involved emission charges on the electricity system. This paper proposes a single objective function of amathematical model for the calculation of power flow optimization involving greenhouse gas emissions costs to the fuel cost function. The single objective function derived using the mathematical model approach with linear heat rate function, in order to get the relationship between the fuel cost function with GHG emission. Namely, the function of energy costs as a combination of fuel costs and GHG emission costs can be shown as a quadratic function.
Volume: 15
Issue: 4
Page: 1585-1600
Publish at: 2017-12-01

Modeling Ontology and Semantic Network of Regulations in Customs and Excise

10.12928/telkomnika.v15i4.6590
Eva Maulina; Bogor Agricultural University (IPB), Indonesia Aritonang , Kudang Boro; Bogor Agricultural University (IPB), Indonesia Seminar , Sri; Bogor Agricultural University (IPB), Indonesia Wahjuni , Onno Widodo; Surya University, Indonesia Purbo
Regulations in customs and Excise have an important function in regulating legally every policy and decision making. Thus, the type of rules are made varies according to the hierarchy of the regulator. This regulation is also changing, following policy developments that occured in the higgest government. then, what if this organization has not been able to manage its regulatory archiving? even regulatory changes can not be tracked? So, we need a well-organized system that can accomodate all of the rules and the associated changes and connectedness with other type of regulations. This system will help us to provide convenience to users to search, manage and track the history of changes as well as the relationship between the rules used by the organization. This paper propose the design of an ontology-based semantic network using a graph database that use neo4j 2.3.1 as a solution. In the application that uses the sample data, we found 13 types of nodes that contains 242 child nodes and 22 type of relation that contain 548 relation that connect all the node within 3305ms.
Volume: 15
Issue: 4
Page: 1929-1937
Publish at: 2017-12-01

Generating a Lighting System by Using Pico Hydro System

10.12928/telkomnika.v15i4.7235
G.; University of Technology and Innovation (APU), Malaysia Subhashini , Devindran; University of Technology and Innovation (APU), Malaysia Munandy , Raed; University of Technology and Innovation (APU), Malaysia Abdulla
The main aim of this research is to design and develop LED based lighting system by using Pico hydro power. The proposed system is to use renewable energy to generate power in remote areas. The system is designed in a small scale which capable of lighting up a LED and sustain power when turbine stop to rotate. Reaction turbine is selected to be the suitable model for this Pico Hydro System (PHS). The performance of the system is tested by changing the materials for the blades and determines the suitable number of blades for the system to perform at maximum efficiency. Additional features, such as displaying generated voltage and flow rate has been implemented. It is observed that, the system could generate maximum voltage of 5.46V at the head height of 65 cm with flow rate of 5.51 L/Min. A total of 4.62 watt of net electrical power generated from this PHS, the value is obtained by using theoretical calculation. Finally, the system proves to be efficient in terms of generated voltage and cost, as compared to the journals which is reviewed in the literature. The scale of the design has to be remodified to be implemented in river areas. 
Volume: 15
Issue: 4
Page: 1565-1573
Publish at: 2017-12-01

Canny Junk System based on IOT

10.11591/ijeecs.v8.i3.pp639-641
D. Wilfred Shiju
Waste organization is one of the fundamental issue that the world goes up against free of the case of made or making country. The key issue in the waste organization is that the junk canister at open spots stretches out beyond time some time as of late the start of the accompanying cleaning process. It is this way prompts distinctive dangers, for instance, horrendous aroma and disagreeableness to that place which may be the principle driver for spread of various afflictions. To avoid all such hazardous circumstance and keep up open cleanliness also, prosperity this work is mounted on a splendid decline structure. The guideline subject of the work is to develop a sagacious astute deny prepared structure for a real junk organization .This paper proposes a smart prepared structure for junk space by giving an alert banner to the common web server for minute cleaning of dustbin with honest to goodness check based on level of waste filling. This technique is bolstered by the ultrasonic sensor which is interfaced with Arduino UNO to check the level of waste filled in the dustbin and sends the alert to the common web server once if waste is filled. 
Volume: 8
Issue: 3
Page: 639-641
Publish at: 2017-12-01

Overdriven Characteristics of Silica Switching Devices

10.12928/telkomnika.v15i4.6457
Ary; University al Azhar Indonesia, Indonesia Syahriar , Nabil Rayhan; Bandung Institute of Technology, Indonesia Syahriar , Jusman Syafiie; University al Azhar Indonesia, Indonesia Djamal
We have built and characterized silica on silicon switching devices fabricated by using the electron beam irradiation. It is based on Mach-Zehnder structure fabricated on silica on silicon layers where the upper cladding used the MgF2 layers to bury the core. The switching speed of 2.0 s has been achieved. To further increase the switching speed we have used larger voltage to the Ti heating electrode to increase the thermo optics effects on silica structures. The higher driving voltage have been used that falls to zero exactly as the first extinction is reached, therefore three fold increase in modulation speed is achieved.
Volume: 15
Issue: 4
Page: 1682-1688
Publish at: 2017-12-01

Driver Drowsiness Detection System Using Sensors

10.11591/ijict.v6i3.pp139-145
Kusuma Kumari B.M , Sampada Sethi , Ramakanth Kumar P , Nishant Kumar , Atulit Shankar
A low-cost and simple distributed sensors model that is particularly suitable for measuring eye blink of the driver, accident and hand position on a steering wheel. These sensors can be used in automotive active safety systems that aim at detecting driver’s fatigue, a major issue to prevent road accidents. The key point of this approach is to design a prototype of sensor units, so that it can serve as platform for integrating different kinds of sensors into the steering wheel. Since the sensors are attached to the steering wheel, therefore they can’t be detached by the driver. It will also detect dangerous stylish driving which may lead to fatal accidents. The major drawback is that the eye blink sensors frame worn by the driver can be removed causing the sensor non-operational. The outcome is that the vibrator attached to eye blink sensor’s frame vibrates if the driver shuts his eyes for approximately 3 seconds and also the LCD displays the respective warning message. The wheel is slowed or stopped depending on the condition. This is accompanied by the vehicle’s owner being notified through the GSM module, so the owner can retrieve the driver’s location, photograph and a list of nearby police stations through an android mobile application. Therefore, driver can be alerted during drowsiness and the owner can be notified simultaneously.
Volume: 6
Issue: 3
Page: 139-145
Publish at: 2017-12-01

Performance Analysis of Data Traffic Offload Scheme on Long Term Evolution and IEEE 802.11AH

10.12928/telkomnika.v15i4.6033
Made Adi Paramartha; Telkom University, Indonesia Putra , Doan; Telkom University, Indonesia Perdana , Ridha Muldina; Telkom University, Indonesia Negara
One of new mobile technology is being developed by 3GPP is Long-Term Evolution (LTE). LTE usually used by user because provide high data rate. Many traffic sending over LTE, makes several users didn’t get good Quality of Service (QoS). Traffic diversion is needed to increasing QoS value. It can be done with offloading data method from LTE to Wi-Fi network. This paper using 802.11ah standard to evaluate Wi-Fi network. IEEE 802.11ah have 1000 meters coverage area and efficiency energy mechanism, which is proposed for M2M in 5G techonology. Some research has proven that traffic diversion with offloading can increasing network performance. The contribution of this paper is to evaluate the impact of traffic offload between LTE and IEEE 802.11ah standard. This paper propose two scenarios using increment number of user and increment mobility speed of user to evaluate throughput and delay value before and after the offload process. The simulation will simulate using Network Simulator-3. We can conclude that network performance after offloading is better for every scenario. For increment number of user scenario, throughput value increasing 29.08%, and delay decreasing 8.12%. Scenario with increment mobility speed of user obtain throughput value increasing 37,57%, and delay value decreasing 27.228%.
Volume: 15
Issue: 4
Page: 1659-1665
Publish at: 2017-12-01

Having Children with Mental Retardation

10.11591/ijphs.v6i4.10779
Sri Endriyani , Yunike Yunike
Mental Retardation is a condition in which the intelegency function is under average, which began during the developmental period. Children with mentally retarded have limited mental function, communication skills, ability to maintain themselves and social skills. These conditions impact the mothes’s they responsible to train children’s ability to be independent. The purpose of this study is to explore the mothers’ experience having children with mental retardation at Special School for mentally retarded (SLB) of Karya Ibu Palembang, Indonesia. This is a qualitative research with fenomenology approach from five partisipants with indept interview. Five themes were get including can’t accept reality, burden, the social stigma,need support from relatives, worry about the future, and admitting God’s will. The Adaptation behaviors found in this study are the acceptance of children’s condition, and loving the children thoroughly.
Volume: 6
Issue: 4
Page: 331-336
Publish at: 2017-12-01

Underwater Image Enhancement Using Histogram Method

10.11591/ijeecs.v8.i3.pp687-689
J. Brindha , V. Vijayakumar
The underwater images not only offer aninteresting sight, but also have a challenge to monitor marinespecies and underwater activities. Taking a beautiful underwater image requires extraordinary equipment and technique. Usually,there are distorted colors on the image caused by poor light andwater quality. So it requires an image enhancement process to geta proper photo to display. This research offers an improvedmethod of auto levels to produce stunning photos. This methoduses the color balancing based on the distribution of each channelR, G and B based on its histogram. The balancing of colors willreproduce colors more attractive compared with other methodsof auto level.
Volume: 8
Issue: 3
Page: 687-689
Publish at: 2017-12-01

Mental Health Service in Ghana: A Review of the Case

10.11591/ijphs.v6i4.8474
Samuel Adu-Gyamfi
Mental health care in Ghana has been fraught with several challenges leading to stagnant growth in mental health service delivery and in some cases a severe depreciation in the nature of care. The Government of Ghana pays little or no attention to mental health care in the country, a situation that has led to poor service delivery in the three major psychiatric hospitals in Ghana. The implementation of the Ghana Mental Act of 2012 has also been faced with major challenges with no significant progress being made. This studytherefore sought to review and document the development of mental health care services in Ghana. Specifically, the study examined the various legislations on mental health that have been enacted  in Ghana since 1900; investigated the implementation of the current Mental Health Act of Ghana; found out whether the Ghanaian government has prioritise mental health services in the country and assessed the challenges and problems that confronted mental health services in Ghana since 1900.The study concludes that, since 1888 efforts have been made by various governments to legislate the provision of mental services in Ghana. However, these legislations have not always protected the rights and interest of the mentally ill.
Volume: 6
Issue: 4
Page: 299-313
Publish at: 2017-12-01

Direction-Finding Scheme For Multi Base Position Classification

10.11591/ijeecs.v8.i3.pp695-697
Karpagavalli S , V. Balamurugan
In GPS denied conditions Unpretentious course structures that work especially with an excessive number of philosophies required after a colossal test that in the imaginative work gathering. The paper proposed an idea to overcome a occurring due to GPS denied condition in view of 3D inertial course system. The system would track the location for further improvement of an officer continuously in a multi-floor building of a particular area. In the midst of an urban fight situation an operation of lobbyist or putting out flames is really essential. The considerable number of fighters would be known about the area and development among themselves and to the military troop outside the building.  This framework is valuable to lead the group appropriately in urban to protect the harmed individuals and it will demonstrate the change of overview.
Volume: 8
Issue: 3
Page: 695-697
Publish at: 2017-12-01

Knowledge, Attitude and Practice of Iranian Women towards Breast Cancer Screening Methods

10.11591/ijphs.v6i4.10782
Bahar Morshed Behbahani
Female breast cancer is the second leading cause of death due to cancer and the second leading cause of cancer deaths in women after lung cancer. This study aimed to investigate the knowledge, attitude and practice of women about breast cancer’s screening methods in order to offer more appropriate training programs if necessary. A cross-sectional study was carried out with a population comprised of women who had referred to public health centers in Sanandaj in 2008. The results of this study do provide some understanding on the topic and suggest that although the majority of Iranian women seem to be quite knowledgeable about breast cancer and screening methods. They need more education on breast cancer, SBE and other methods of early detection. We recommend the establishment of an institutional framework and policy guidelines that will enhance adequate and urgent information dissemination about breast cancer and screening methods to all women in Iran. Since women’s beliefs and behaviors may impact young women, designing training courses for this group seems to be essential.
Volume: 6
Issue: 4
Page: 351-355
Publish at: 2017-12-01

Sustainability Capacity of HIV/AIDS Programmes in Yogyakarta, Indonesia

10.11591/ijphs.v6i4.8763
Perigrinus Sebong , Dwi Handono Sulistio , Yodi Mahendradhata
The Indonesian government established the prevalence target of HIV <0.50% in 2019 to control the spreading of HIV through the National Medium Term Development Plan. To ensure the sustainability of this development plan, a study of the strategic capacity of HIV/AIDS programmes is needed to provide an overview so that the program can be sustained over time. This study aimed to explore the sustainability capacity of HIV/AIDS programmes in Yogyakarta. This was a descriptive study utilizing a qualitative approach. The study involved 42 participants as key informants selected by a purposive sampling technique, and the data were examined using content analysis. By setting priorities of the local government supported by the Provincial Health Office and with the coordination of the Yogyakarta Province AIDS Commission, the programs are able to maintain sustainable HIV and AIDS programmes in Yogyakarta. Funding capacity, evaluation, programme adaptation and communication have not been optimal to ensure the sustainability. Stability of funding is the main obstacle to achieving the sustainability of HIV and AIDS programs. However, with good planning, partnership structure and sufficient organizational capacity, this approach can ensure the HIV and AIDS programmes will continue with the targets set by the Yogyakarta Provincial Health Office. The government in Yogyakarta needs to increase funding capacity, and improve communication to ensure sustainability. The strategy should include adaptation and evaluation of programs through strengthening private sector financing, formulating a communication plan and improving the capacity to respond to change.
Volume: 6
Issue: 4
Page: 314-323
Publish at: 2017-12-01

Neural KDE Based Behaviour Model for Detecting Intrusions in Network Environment

10.11591/ijai.v6.i4.pp166-173
V. Brindha Devi , K.L. Shunmuganathan
Network intrusion is one of the growing concern throughout the globe about the information stealing and data exfiltration. In recent years this was coupled with the data exfiltration and infiltration through the internal threats. Various security encounters have been taken in order to reduce the intrusion and to prevent intrusion, since the stats reveals that every 4 seconds, at least one intrusion is detected in the detection engines. An external software mechanism is required in order to detect the network intrusions. Based on the above stated problem, here we proposed a new hybrid behaviour model based on Neural KDE and correlation method to detect intrusions. The proposed work is splitted into two phases. Initial phase is setup with the Neural KDE as the learning phase and the basic network parameters are profiled for each hosts, here the neural KDE is generated based on the input and learned parameters of the network. Next phase is the detection phase, here the Neural KDE is computed for the identified parameters and the learned KDE feature value is correlated with the present KDE values and correlated values are calculated using cross correlation method. Experimental results show that the proposed model is robust in detecting the intrusions over the network.
Volume: 6
Issue: 4
Page: 166-173
Publish at: 2017-12-01
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