https://jurnal.unai.edu/index.php/jiscse <p>SCIENCE &amp; ENGINEERING</p> Universitas Advent Indonesia en-US Journal of International Scholars Conference - SCIENCE & ENGINEERING 2408-3291 https://jurnal.unai.edu/index.php/jiscse/article/view/310 This research aims to assess and compare the performance of six machine-learning algorithms for text classification namely decision rules, decision tree, k-nearest neighbor (k-NN), naïve Bayes, regression, and Support Vector Machine (SVM). These six algorithms are compared using multi-class text document. The comparison was done in terms of their effectiveness, the ability of classifiers to classify the document in the right category. Precision, recall, F-measure, and accuracy are the four effectiveness measurements that were applied. The result shows that decision rule’s performance was the worst. SVM, decision tree, regression, and naïve Bayes have high effectiveness value. SVM can classify text quite well in average of 3.42 seconds to build each classifier model. Decision tree and regression can classify text with higher accuracy values rather than SVM, but slower in building the model. Among the six algorithms Naïve Bayes classifiers has the highest effectiveness value, while the model development time is the shortest as well. The average model building time is 0.03 second. Debby Erce Sondakh Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/337 Molecular docking is a comprehensive method to predict noncovalent binding of small molecules (ligand) of elucidated active compounds to final receptor. The binding show possibility of metabolism of ligand related to physiology and action of isolated chemical to the receptor. Docking of three ligand, i.e. cyclomulberrin, cyclomorusin, and engeletin with NF-kβ (which act as receptor/protein target), has been done to study its binding ability for description of biochemical activity interactions. The active compounds were isolated from the leave of Artocarpus altilis (known as breadfruit), and the structures are readily download from National Center for Biotechnology Information (NCBI) Pubchem. NF-kβ is the receptor responsible for the regulation and immune response. The research is using PyRx and AutoDock Vina method control software. The result showed that each ligand has binding affinity to NF-kβ receptor, with the highest score for Engeletin (-8,96 kcal/mol), followed by followed by cyclomorusin (7,59 kcal/mol) and cyclomulberrin (-7,00 kcal/mol). We conclude, that these three ligand could be proposed as candidate for further research in the inflammation field. Marvel Reuben Suwitono Abraham Charis Lizki Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/338 The rapid development of technology brings great influence to the world of information at this time. Communications, information management becomes easier to do. Use of the website has been much enjoyed by all people, and the organization is one of the means to interact or obtain information easily. This convenience is required by educational institutions, which certainly can’t be separated in the management of data and information. Alumni role is crucial to the development of an educational institution. Value and quality of an educational institution is reflected through the alumni. Empowerment good alumni, alumni association which both indirectly enhance the good image of the alma mater of the general public. Similarly, the involvement of alumni in exchanging information among alumni, also at an educational institution such as a university to be one important factor for the development of the university. Adventist University of Indonesia need an information system to assist the tracking of alumni and alumni data management to be information that is needed. The purpose of this study there were 4: 1) Simplify tracking of alumni by providing web-based information systems. 2) Assist the management of data into the information needed. 3) Provide a system that can be used to distribute information such as upcoming events, job opportunities, and create an online vote to simplify the alumni in decision making in the organization. 4) Helping alumni who are away from campus to get a diploma and transcripts legalized easier. The methodology that is used in writing is the SLDC method (System Development Life Cycle). This application is expected to help the alumni and the university for tracking alumni, alumni data management, and also in the presentation and get information. Raymond Maulany Claudia Lucie Agatha Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/339 Lead (Pb) is a toxic heavy metal that is ubiquitous in our environment. Exposure to Pb is a threat not only to humans and other organisms but to the entire environment as well. This study assessed the Pb-bioaccumulation and bioconcentration abilities of eight plant species in Pb-contaminated sites. Atomic Absorption Spectroscopy (AAS) results indicated that higher Pb concentrations were determined in the root tissues of plants compared with the shoot tissues. Species with high amount of Pb in root tissues were Mimosa pudica (1495.45 ppm), Centrosema pufescens (1149.1 ppm), Eleusine indica (916.65 ppm), Panicum antidotale R.(756.35 ppm), Cyperus rotundus (534.4 ppm), Cynodon dactylon (516.35) and Dichantium sericeum (397.55 ppm). More so, C. dactylon accumulated the highest shoot Pb (8.05 ppm), followed by M. pudica (4.4 ppm), D. sericeum (4.3 ppm), C. pufescens (2.15 ppm), P. antidotale (2.15 ppm), E. indica (3.3 ppm) and R. communis (1.95 ppm). Among these species, C. pufescens had the highest bioconcentration factor (BCF) and thus, can efficiently bioconcentrate Pb. These results revealed the ability of these eight species to bioaccumulate Pb in their tissues. Finally, plant species that can efficiently concentrate Pb from the soil into the root and shoot tissues are the promising species for phytoremediation of Pbcontaminated sites. Litton Halder Leilanie D. Arce Orlex B. Yllano Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/340 The study determined the increase of income and the other benefits of the Organic Gardening Program (OGP) initiated by the Community Extension Services Center (CESC) of the Adventist University of the Philippines (AUP). Monitoring form and interviews were used to collect the data from 15 families who were purposively selected among the 44 participants of OGP at Barangay Hoyo, the partner community of AUP in Silang, Cavite. The results show that the average weekly income of the participants from OGP was PhP170 or about PhP680 per month as reflected in the monitoring forms given to the participants at the onset of the five-month program. The highest weekly income from the OGP was PhP600 per week which is around PhP2,400. This family has also the highest gross monthly income and has only five family members. Five families got the lowest weekly income from OGP, PhP50 per week. From the interview data, the participants reported that OGP increased their income thus it has improved their economic status and it became a source of fresh and healthy food thus it alleviates food scarcity and malnutrition. The other benefits the participants obtained from organic gardening program included the following themes: stress relief and source of joy, improved social relations through giving, and health benefits. Thus, OGP positively impacted the economic, health, and social status of the participating families in the community of Hoyo. It is recommended that more families should be encouraged to join in OGP and more varieties of seeds should be provided by the municipality of Silang in cooperation with the Department of Agriculture to alleviate food scarcity, poverty, and malnutrition. Rolyn Cadalig Eunice Carpizo Eunice Aclan Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/341 Mainly believed that IT Spending has influenced business performance. This research will validate about the contribution of information technology capital expenditures (IT CapEx) which focused on information technology equipment assets towards PT Indosat Tbk. revenue. By measuring IT CapEx and company’s overall revenue, found that there is less significant correlation between the two variables. It give us the direction for the forecasting that is through linear regression equation. Jay Idoan Sihotang Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/342 The Purpose of this research is to identify and measure the degree of effectiveness information system implementation at UniversitasKlabat, Airmadidi. The research was through several stages as follows: define research background and research objectives, collect the literatures to guide the research process, choose and form the model to measure the degree of effectiveness in information system, the suit research sample, and perform the data collection and analyzing the findings. The survey was conducted to sampling user of information system at UniversitasKlabat, the number of respondents was 80 persons divided by 71% lecturer and 29 % staff.Using the simple regression and multiple regression the research found that there are indication of 52.8% five dependent variables, namely: reliability, responsiveness, assurance, empathy, and tangible significant influence to the effectiveness of UniversitasKlabat information system (SIU). Furthermore, research was found that two variables, responsiveness and tangible has most significant influence with number 44.6% and 35.2% at the SIU compared with reliability, assurance, and empathy. Thus, it can be concluded that is the two variables has the greatest influence in determining effectiveness of SIU. Jein Margaret Rewah Steven Lolong Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/343 Unmanned Aerial Vehicle (UAV) or also called drone, is a technology that combines information about a particular location with a state-level high cruising. UAVs has many benefits in its use: in terms of defense and security can be used for Aerial Surveillance, mapping or entertainment. This research aims to develop a system called First Person View (FPV). FPV is the ability to obtain images that come directly from the camera. In this case mounted on the UAV body. Thus users can easily take Figures in the required area. FPV system development based on the Model DJI Phantom 2. It is reconstructed using the Component Based Development Model. Component-based development models is associated with object-oriented technology. This method is based on a system that has incorporated a number of existing components or systems COTS (Commercial off the shelf). Which can be obtained by buying or parts already made internally. FPV system is using wireless transmitter 5.8 GHz as a video transmitter mounted on UAV body. As a receiver using the built-in receiver that is already installed on the FPV monitor, to display the image. Oktoverano H. Lengkong Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/344 Nitrate compound are prodrugs and required degradation to nitrite and furthermore bioactivated to nitric oxide (NO), an active beneficial form for physiological purpose e.g. on angina pectoris. Through the use of nitrate donor per oral, it was alleged that Escherichia coli, normal bacterial in the gut, decompose and reduce nitrate concentration and shows itself as chemoorganoheterotrophs organism. This research aim to investigate the role of nitrate donor compounds i.e.isosorbide dinitrate (ISDN) and natrium nitrate (NaNO3) on E.coli, in terms of concentration of nitrite as catabolism product and bacteria numbers. Six groups of nitrate donors varies in concentration (100, 500 and 1000 ppm) is dissolved in 3000 ppm glucose solution. After incubated for 24 hours Griess method is applied for measurement of nitrite concentration. Using spectrofotometric bacterial counting method, then bacteria number is obtained. The results showed that increasing nitrate concentration does not influence the growth or bacteria numbe of E. coli, but correlate with amount of nitrite formed. Marvel Reube Suwitono Michael Tambunan Joshua H.L. Tobing Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/346 Dental plaque among patients with orthodontic appliances is common. However, plaque removal using an ordinary toothbrush is challenging. This study therefore, aimed at evaluating the effectiveness of three different types of orthodontic toothbrushes in removing dental plaque in orthodontic patients. Thirty patients, 27 females and 3 males, were randomly assigned to three groups: Group A, B and C with corresponding toothbrushes assigned to each group. Group A was assigned Toothbrush A (V-shaped bristles), Group B, Toothbursh B (Vtrim bristles), and Group C, Toothbrush C (W-shaped bristles). These were used three times for 2 weeks. Bass method was used for brushing. Silness and Loe plaque index was used to score the plaque index for the three trials. The results were analyzed using One-way ANOVA and Tukey's Post Hoc test. All three orthodontic brushes tested were independently effective in removing plaque as manifested by decrease in mean plaque index scores. Comparing the three toothbrushes with specific designs, results showed that there were no statistical differences between the three toothbrushes when it comes to its ability to remove plaque Although post hoc analysis favors Toothbrush A as superior over Toothbrushes B and C, it was not statistically significant. Yasmin Buenaventura Clara Lumban Tobing Magda Georgetta R. Resontoc Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/347 Filariasis is a disease caused by filarial worms which are transmitted by mosquito vectors. Filariasis may cause thickening of blood vessels and swollen lymph nodes. Almost all cases of filariasis are not detected until complications occur. Early detection can be done through the examination of peripheral blood regularly. The most commonly found Filariasis cases in Indonesia are caused by a Brugia malayi . Based on the report of 2009, the highest number of filariasis cases were in the provinces of Aceh, East Nusa Tenggara, and Papua, and the lowest were found in the provinces of Bali, Maluku and North Sulawesi. Microfilariae rate indicates the prevalence of filariasis in that area. The highest numbers of microfilariae in Indonesia were found in West Papua, Gorontalo and Papua provinces. Filariasis is a major disadvantage in terms of economic, labor productivity and it can cause lifelong disability. One of the efforts made in the global filariasis elimination program is the mass administration of prevention drug in which the WHO set a minimum target of 85%. In Indonesia, for the year 2005 - 2009 is still at the level of 28 to 59.48 % . The Ministry of Health has planned a program to eliminate filariasis starting in 2014 and continue to have the acceleration program filariasis elimination untill 2020. Mettison Markus Silitonga Doli Situmeang Copyright (c) 2016-01-01 2016-01-01 1 4 https://jurnal.unai.edu/index.php/jiscse/article/view/349 Web service technology is a technology that allows devices with different platforms can communicate with each other using JSON format (Java Script Object Notation). This technology can be applied to various fields, one of them in the academic field. Students sometimes do not know about what topics will be discussed at the next meeting, and also sometimes they do not know whether there are tasks or exam given by their lecturer. The purpose of this study was to implement PHP JSON Web services technology in android devices so that students can find out in detail about what will be discussed at each meeting and learning, and also be able to know what the task given by the lecturers and when the test will be conducted. This study was prepared by the method of prototyping. This research has been done and has resulted in an application that has been tested. Applications are made to assist students in obtaining detailed information about what to do at each meeting and learning, and also provide benefits for faculty where they can assign tasks to students online. Stenly Richard Pungus Dion Michael Pratama Erick Copyright (c) 2016-01-01 2016-01-01 1 4