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29,922 Article Results

Intelligent cluster connectionist recommender system using implicit graph friendship algorithm for social networks

10.11591/ijai.v9.i3.pp497-506
Arnold Adimabua Ojugo , Debby Oghenevwede Otakore
Implicit clusters are formed as a result of the many interactions between users and their contacts. Online social platforms today provide special link-types that allows effective communication. Thus, many users can hardly categorize their contacts into groups such as “family”, “friends” etc. However, such contact clusters are easily represented via implicit graphs. This has arisen the need to analyze users’ implicit social graph and enable the automatic add/delete of contacts from/to a group via a suggestion algorithm – making the group creation process dynamic (instead of static, where users are manually added or removed). The study implements the friend suggest algorithm, which analyzes a user’s implicit social graph to create custom contact group using an interaction-based metric to estimate a user’s affinity to his contacts and groups. The algorithm starts with a small seed set of contacts – already categorized by a user as friends/groups; And, then suggest other contacts to be added to a group. The result inherent demonstrates the importance of both the implicit group relationships and the interaction-based affinity in suggesting friends.
Volume: 9
Issue: 3
Page: 497-506
Publish at: 2020-09-01

Machine learning-based technique for big data sentiments extraction

10.11591/ijai.v9.i3.pp473-479
Noraini Seman , Nurul Atiqah Razmi
A huge amount of data is generated every minute for social networking and content sharing via Social media sites that can be in a form of structured, unstructured or semi-structured data.  One of the largest used social media sites is Twitter, where each and every day millions of data generated in the form of unstructured tweets. Tweets or opinions of the people can be used to extract sentiments of the people. Sentiment analysis is beneficial for organizations to improve their products and make required changes on demand to increase their profit. In this paper, three machine learning algorithms Support Vector Machine (SVM), Decision Trees (DT), and Naive Bayes (NB) for classifying sentiments of twitters data. The purpose of this research is to compare the outcomes of these algorithms to identify best machine learning method which gives most accurate and efficient results for classifying twitter data. Our experimental result shows that same preprocessing methods on a different dataset affect similarly the classifiers performance. After analyzing the results it is observed that SVM provides 64.96%, 71.26% and 91.25% precision which is better than other two algorithms. Also, overall Recall and F-measure rate of SVM is greater than NB and DT for three datasets. However, it is important to further study current available preprocessing techniques that help us to improve results of various classifiers.
Volume: 9
Issue: 3
Page: 473-479
Publish at: 2020-09-01

Complementary treatment to reduce blood sugar levels of type 2 diabetes mellitus patients

10.11591/ijphs.v9i3.20434
Jujuk Proboningsih , Anita Joeliantina , Aida Novitasari , Dewi Purnamawati
Diabetes mellitus is a chronic disease that requires long-term management. There is a tendency in type 2 diabetes mellitus patients to use herbs as a complement to medical treatment. The purpose of this study was to analyze the use of herbs as a complement to medical treatment in reducing blood sugar levels of T2DM patients. This type of research is quasi-experimental, with 40 research subjects divided into 4 groups. Determination of research subjects by purposive sampling in accordance with established inclusion criteria. Data analysis using paired T test. The majority of respondents was women (77.5%) and had no genetic history (75%). The duration of type 2 diabetes mellitus  majority was >5 years 72.5%). Data on random blood sugar levels before (p=0.098) and after (p=0.113) intervention were normally distributed and homogeneous p>0.05 (0.839). The treatment group (groups 2, 3, and 4) showed a significant decrease in random blood sugar levels as the control group (1) with a significance value <0.05. Giving herbs has a tendency to reduce random blood sugar levels when used as a complement to medical treatment. Bitter melon shows the effect of decreasing random blood sugar levels greater than the provision of bay leaves and cinnamon.
Volume: 9
Issue: 3
Page: 267-271
Publish at: 2020-09-01

Stress and fear in women living with cancer: An argumentation towards the adaptation theory

10.11591/ijphs.v9i3.20413
Ni Putu Wulan Purnama Sari
Extended life expectancy in cancer nowadays has implication on longer exposures toward cancer-related stressors. Based on the adaptation theory, the longer the stressor exposures then the more the stress tolerance expected. This study aimed to compare and analyze the differences of stress and fear in cervical and breast cancer survivors (CCS and BCS) between cases and survivorship stages, impacting on anxiety, depression, and perceived life normality (PLN). This cross-sectional study involved 47 CCS and 58 BCS (n=105). Self-developed instrument was used in data collection (r=-0.256-0.935; Chronbach’s Alpha=0.908). Various statistical tests were used in data analysis (α<0.05). Stress due to cancer diagnosis and treatments were significantly different between cases (p=0.005 and p=0.003 in CCS and BCS respectively), impacting significant differences on anxiety, depression, and PLN between cases (p=0.025, p=0.000, and p=0.000 respectively). In both cases, stress due to cancer diagnosis and treatments, anxiety, depression, and PLN were not significantly different between survivorship stages (all p>0.05). Fear towards cancer recurrence, metastasis, additional cancer, and diagnostic test were not significantly different between cases and survivorship stages (all p>0.05). These findings argue the adaptation theory because the adaptation process was proved to be limitless in CCS and BCS; therefore it can’t be seen as a product.
Volume: 9
Issue: 3
Page: 272-280
Publish at: 2020-09-01

Fault analysis in power system using power systems computer aided design

10.11591/ijaas.v9.i3.pp171-179
Fortune Chukwuebuka Amanze , Amanze Destiny Josiah
This work presents a fault analysis simulation model of an IEEE 30 bus system in a distribution network. This work annalysed the effect of fault current and fault voltage in a distribution system. A circuit breaker was introduced into the system to neutralize the effect of the fault. The system was run on a PSCAD software and results were obtained. The system was monitored based on the start time and the end time of the fault and how well the circuit breaker reacts with those times. Fault occurred from 0.100 to 0.300 seconds before it was removed. At the time fault was not applied (i.e. from 0.00 to 0.100 and from 0.300 to 0.72), the circuit breaker was close and became open when fault was applied so as to cut off current flow through the line.The result obtained gave the disruption caused by the fault and the quick response of the circuit breaker in neutralizing it. Results gotten are based on when the circuit breaker is close and no fault is applied and when the circuit breaker is open due to fault. From this work, it was obtained that circuit breakers are very essential in system protection and reliability.
Volume: 9
Issue: 3
Page: 171-179
Publish at: 2020-09-01

Stock portfolio hedging with financial options

10.11591/ijeecs.v19.i3.pp1436-1443
Juan Andrés Jaramillo-Restrepo , Miguel Jiménez-Gómez , Natalia Acevedo-Prins
The financial market currently offers derivative products whose characteristics allow investors to reduce the negative impact of natural market fluctuations on the value of their assets. Hedging with financial options is one of the possible strategies that an investor can implement in order to reduce the exposure or risk of their investments. This paper aims to assess the real impact of financial options as a hedging instrument on an investment portfolio made up of variable income assets of the Colombian market. The results show that for options with an upward trend, call options allow future losses to be hedged; on the other hand, for bearish trends, coverage is made with put options.
Volume: 19
Issue: 3
Page: 1436-1443
Publish at: 2020-09-01

Multimedia improves knowledge and choice of contraception among pregnant women

10.11591/ijphs.v9i3.20472
Eka Nur Rahayu , C. Asri Budiningsih , B.M. Wara Kushartati
The quantitative research employed quasi-experimental research with one pretest-posttest group was done to examine the knowledge of pregnant women about family planning and the choosing of contraception. The sample of this study was 41 pregnant women recruited by incidental sampling techniques. Questionnaires for pregnant women provide maternal identity, questions for knowledge about family planning, and the choice of contraception chosen. Data analysis used Wilcoxon test. Multimedia improves the knowledge and choice of contraception among pregnant women.
Volume: 9
Issue: 3
Page: 192-198
Publish at: 2020-09-01

Health workforce malldistribution: Lesson from central Lampung Regency in Indonesia

10.11591/ijphs.v9i3.20424
Simon Sumanjoyo Hutagalung , Dedy Hermawan , Devi Aulia
The purpose of this study is to explain: (1) Distribution of health workers in basic health services in Central Lampung, and (2). Factors that influence the process of procurement and distribution of health workers in primary health care in Central Lampung. Research conducted with this descriptive qualitative method involved health stakeholders in 34 health centers and 17 hospitals in the region. The results of this study include: (a). Analysis of the Distribution of Health Workers by Region, it is known that the pattern of distribution is not balanced and there are some districts that do not have several types of health workers. (b). Analysis of power distribution based on health workplaces is known that the majority of health workers are in health centers, even midwives and nurses are mostly in health centers and some types of health workers are not yet available in health centers. Also known factors that influence the process of procurement and distribution of health workers in primary health care include structural and environmental factors.
Volume: 9
Issue: 3
Page: 224-234
Publish at: 2020-09-01

A chaos-based medical image encryption method

10.11591/ijeecs.v19.i3.pp1316-1324
Xuehong Wang , Chunling Tu
The information in the e-health system involves the patient’s privacy which is extremely sensitive. For instance, these information record social security numbers and detailed medical history.  When the breach happens, there are illegal, or disclosure behaviors taken to privacy that should be compromised security. In this paper, the medical digital images are protected by the proposed chaos-based encryption method in the process of transmission and utilization. Then the authentication is granted to patients and telemedicine staffs by the decryption method proposed. The Qi 3-D four wing chaotic system is employed in this method. The proposed method promises the keys with higher complexity and unpredictability than traditional cryptography methods by introducing the chaotic dynamics in the new cryptography. Digital medical images are used to validate the proposed method under the brute and the differential attacks. The pixels of the image are scrambled completely based on cat map and the sub-blocks of the image are diffused in the way that the original image is changed into a chaotic image robust to all kinds of attacks. The experiments show that the proposed method has higher performance and higher computation for decryption.
Volume: 19
Issue: 3
Page: 1316-1324
Publish at: 2020-09-01

The resilience among suicide attempt survivor

10.11591/ijphs.v9i3.20382
Fatwa Tentama , Tri Wahyuni Sukesi , Surahma Asti Mulasari , Sulistyawati Sulistyawati
Suicide incidents in Gunungkidul, Indonesia have increased from year by year. This phenomenon is of great importance to study to find a proper solution. Based on the data it has been found that people who have committed suicide but have been saved (survived). To date, they have managed to survive and carry out their daily activities well. The majority of suicide attempts are caused by unpleasant experiences in the past. The purpose of this study was to assess the resilience of suicide survivors who can be used to motivate people who intend or who survived suicide to get back up. This research used a qualitative approach with a phenomenological method. The location of this research was in Gunungkidul Regency. The subjects of this study were four people who were obtained by using purposive sampling technique. Several in-depth interviews were carried out to collect the data from the respondent.  The results show that the factors supporting the resilience of survivors to suicide were the ability to control emotions and impulses, self-efficacy and optimism, the ability to analyze the causes of problems, empathy, and the ability to achieve what was desired.
Volume: 9
Issue: 3
Page: 235-244
Publish at: 2020-09-01

Intelligent reputation system for safety messages in VANET

10.11591/ijai.v9.i3.pp439-447
Ghassan Samara
Nowadays Vehicle Ad - hoc Nets (VANET) applications have become very important in our lives because VANET provides drivers with safety messages, warnings, and instructions to ensure drivers have a safe and enjoyable journey. VANET Security is one of the hottest topics in computer networks research, Falsifying VANET system information violates VANET safety objectives and may lead to hazardous situations and loss of life. In this paper, an Intelligent Reputation System (IRS) aims to identify attacking vehicles will be proposed; the proposed system will rely on opinion generation, trust value collection, traffic analysis, position based, data collection, and intelligent decision making by utilizing the multi-parameter Greedy Best First algorithm. The results of this research will enhance VANET's safety level and will facilitate the identification of misbehaving vehicles and their messages. The results of the proposed system have also proven to be superior to other reputational systems.
Volume: 9
Issue: 3
Page: 439-447
Publish at: 2020-09-01

Contamination rate of commonly consumed fresh vegetables and fruits with parasites of medically importance in Wolkite and Butajira Towns of Gurage Zone, Southern Ethiopia

10.11591/ijphs.v9i3.20395
Fitsum Bekele , Teha Shumbej , Andamlak Dendir , Dereje Mesfin , Absra Solomon
Intestinal parasitic infections are among the most common on causes  of disease in humans, responsible for considerable morbidity and mortality. Commonly consumed raw vegetables and fruits are among the ways through which humans become infected with parasites of medical importance. A prospective cross-sectional study with an aim of describing the parasite contamination rate of raw fresh vegetables and fruits sold at the central open-aired market of Butajira and Wolkite towns, in southern Ethiopia was conducted on a total of 270 fresh vegetable and fruits samples. Standardized parasitological techniques were employed to detect diagnostic stages of parasites.98 out of the 270 (36.3%) samples were found positive for intestinal parasites. Remarkably, twenty eight out of the forty five cabbage samples analyzed, 62.2%, were found to be contaminated with parasites of medical importance, registering the highest level of contamination. On the contrary Avocado was found to be the least contaminated produce with contamination rate of 17.7% (8/45). Significant association was observed between the kind of vegetables analyzed and existence of parasites (p=0.002). This study identified high rate of contamination in commonly consumed vegetables and fruits. The authors believe that the role fruits and vegetables paly in the transmission of intestinal parasitic infections to humans is un questionable. Substantial attention is needed from all relevant bodies to tackle this problem.
Volume: 9
Issue: 3
Page: 211-215
Publish at: 2020-09-01

Clinical pharmacoepidemiology of antibiotics usage in intensive care unit of cancer special hospital

10.11591/ijphs.v9i3.20447
Akrom Akrom , Rafiastiana Capritasari
The pattern of antibiotics use in cancer patients in the intensive care unit (ICU) of dharma is cancer special hospital (DCSH) has not been identified. The purpose of this study is to determine the pattern of antibiotics use in cancer patients treated in the ICU of DCSH from 2012-2014. This study was observational with a cross-sectional design. The data collection is done retrospectively. The inclusion criteria to recruit the subjects, i.e. Adult patients who had nosocomial infections in the ICU; Patients with medical records in the ICU who received antibiotics in the 2012-2014 periods. Patients originating from inpatients (wards); Patients with medical records were read. The exclusion criteria were postoperative patients and Patients with incomplete medical records. We collected data from medical records of cancer patients who had been admitted to the ICU in 2012-2014, medication administration records, sample submission, and laboratory records. There are 202 cancer patients including in the study. Leukemia and breast cancer were the most cancer’s diagnosis in the Subject. More than two hundred cancer patients were receiving antibiotic therapy, with more than 50% of them were diagnosed with pneumonia, followed by central infection (>20%) and urinary tract infection (>10%). The antibiotic most frequently used was meropenem, with 33.8%. The three most commonly used antibiotics from 2012 to 2014 were meropenem, levofloxacin, and ceftriaxone.
Volume: 9
Issue: 3
Page: 169-175
Publish at: 2020-09-01

The knowledge of dentists for preventive influence of the caries process

10.11591/ijphs.v9i3.20478
Dobrinka Mitkova Damyanova , Valentina Velikova
The line of knowledge runs from the general social, legal, financial and managerial framework. It is necessary to present the object of professional activity, the peculiarities of professional work and the methods for its optimization. Subjects of the survey were 100 dentists who perform treatment of deciduous teeth from the city of Varna, Bulgaria. The individual addressed anonymous survey was fulfilled during educational, clinical and organization meetings at the Faculty of Dental Medicine-Varna and on the territory of the city of Varna. The interviewed dentists encounter difficulties with the diagnosis of the initial dental caries in primary dentition. The dentists included in the survey rely mainly on their theoretical and practical experience and routine clinical methods for non-invasive treatment of the initial dental caries. Work experience and the specialty do not have a significant impact on the awareness of dentists about the new criteria related to the diagnosis and prevention of dental caries in the primary dentition. The age, work experience and specialty of dentists are factors for their awareness of the new approaches to treatment of children, as doctors up to 30 years of age, with a recognized specialty and work experience up to five years are more informed.
Volume: 9
Issue: 3
Page: 176-183
Publish at: 2020-09-01

Development of a portable electronic device for the detection and indication of fireworks and firecrackers for security personnel

10.11591/ijeecs.v19.i3.pp1194-1203
Aaron Don Munsayac Africa , Stephanie Claire Alberto , Travis Evan Tan
The use of fireworks and firecrackers to celebrate festivities is a very common activity in the Philippines. But due to the lack of strict control and regulation, there are unwanted risks of accidents from occurring due to the poor handling and storage conditions of these devices. Proper monitoring is important to reduce any unnecessary risks imposed on human life and property. While existing storage monitoring devices exist, the developed prototype is designed to contain sensors that are more suited in monitoring the ideal conditions of where the fireworks are stored. Monitoring the climate conditions on these devices may seem trivial at first, but such climate change can involve a rapid rise in temperature that can accidentally ignite the fireworks and deal with catastrophic damage. Another concern is the rise of humidity that may alter that chemical characteristics of the gunpowder stored in the fireworks.  Such changes may not have any noticeable effects until it arrives in the consumer, that may experience an unwanted and unintended change in the performance of the fireworks leading to accidents. Therefore, it is important for this device to properly monitor the surrounding area then indicate various forms of alarms as a method of redundancy.
Volume: 19
Issue: 3
Page: 1194-1203
Publish at: 2020-09-01
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