Journal of Engineering and Scientific Research (JESR)
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Tsunami Modelling Araound Lombok, Indonesia
Get PDFLombok earthquake in 2018, raised many failure of facilities that impact to human life. The earthquake was unique, started with mainshock that did not predict by scientist with hypocenter located in Flores Fault in the north of Lombok Island. In 1992, tsunami recorded in Lombok with the hypocenter also in Flores Fault. Based on the information, earthquake in Flores Fault can trigger tsunami. Beside Flores Fault, subduction zone in the south of Lombok is also can be earthquake source and it is not impossible can trigger the tsunami. The purpose of this research is to modeled the tsunami both it come from earthquake in Flores Fault and the subduction zone with magnitude 7.8. Numerical method is used to modelled it and the result is the height and velocity of tsunami is 11 m and 720 km/hours for Flores Fault and 9 m and 450 km/hour for subduction Zone
Distributed Control with Web-based 3D Visualization using Kinematics Analysis for IoRT
Get PDFThe use of graphical user interface in web platform has been increasing in the recent decades. The concept of Internet of Robotic Things (IoRT) integrates heterogenous intelligent devices into a distributed architecture of platforms. This research is conducted to deliver proof of concept of distributed control of 2 DOF robot manipulator with web-based 3D visualization. The 3D modeling was developed using Three.js and the WebGL library. Synchronization was made using WebSocket communication on TCP network layer. This protocol allowed 3D mesh data broadcasted from web interface to manipulator with average response 7.86 ms. Moreover, using Denavit-Hartenberg convention, kinematic model facilitates the convention of end-effector position data into angular form and vice versa. The error percentage at a joint 1 is 4% and joint 2 of 2.96%. The error occurs because of the characteristic of inverse function called singularity in which the application value in each joint has the input values of and respectively to get the end-effector position on the 2 DoF Manipulator Robot
Web-Gis Application Of Agricultural And Food Crop Management
Get PDFThis paper discusses web-based applications in the agricultural and food crops sectors in North Aceh district, Aceh Province, Indonesia. The agricultural and food crops sector is a mainstay sector of the people of North Aceh and local governments to move the economy and income of the local community. There are several superior agricultural products and food crops including rice, corn, sweet potatoes, green beans, long beans, cassava and potatoes. The North Aceh Government does not have sufficient applications to manage agricultural sector products. The research objective is to realize the independence of local food in order to support the national food security program. The mechanism used to design and make agricultural and food crop web applications starts from application design, application construction/coding, application testing and implementation system. After testing the web application by doing black box testing-white box and GUI testing to find out the side of the application display, application behavior and application durability. The results showed the application accuracy, stability and durability of the application reached 97.4%. The application web-based of agriculture and food crop management has been running as it should for mapping/GIS of superior agricultural commodities and GIS potential locations of agriculture and food crops in North Aceh.
Keywords: Applicaton, GUI, Black Box Testing, GI
Superior Supercapacitors based on Biowaste Materials
Get PDFCarbon nano spheres derived from Allium cepa were synthesized at different temperatures in a one-step pyrolysis process for supercapacitor electrodes. Obtained carbon nano spheres were analyzed using SEM, FTIR, BET and XRD. The nano materials were fabricated into conducting electrodes for cyclic voltammetry, constant current charge-discharge and electrochemical impedance spectroscopy studies. All the studies were done in 3.0 M KOH electrolyte. Specific capacitance from charge discharge experiments were found to be 132.03 F/g and 149.49 F/g for nano materials synthesized at 500ºC and 600ºC respectively. Obtained values suggest a way forward in producing a green electrode for commercial applications
Base Flow Index of Way Seputih River at Buyut Udik
Get PDFOne of river flow components considered in watershed management is baseflow, the main contributor to the river flow during dry season. Ratio between baseflow to total flow is called Base Flow Index (BFI). In fact, BFI can be used as an indicator how good the catchment hydrology is. The purpose of this study is to analyze BFI of Way Seputih river at Buyut Udik Hydrometry Station. The method includes Recursive Digital Filter (RDF) method, which utilizes constant recession of hydrographs in displaying the ratio of baseflow from continuous discharge during periods when there is no direct runoff. Daily discharge data from Way Seputih river at Buyut Udik recorded from 1973 to 2006 is used. The result shows that yearly BFI values range from 0.142 to 0.487 and there is a decrease trend of yearly BFI over time. This result is confirmed by yearly average discharges which tend to decrease over time. These are affected by land cover degradation in Way Seputih catchment and this should be a concern for authorities to improve land and water conservation in Way Seputih catchment so that river flow could be maintained throughout the yea
Addressing Semantic Interoperability, Privacy and Security Concerns in Electronic Health Records
Get PDFThe use of Electronic Health Records (EHR) in healthcare has the potential of reducing medical errors, minimizing healthcare cost and significantly improving the healthcare service quality. However, there is a barrier in healthcare data and information exchange between various healthcare systems due to the lack of interoperability. Also, with the implementation of EHR system, there are security and privacy concerns in the storage and transferring data entities. The healthcare interoperability problem remains an issue of further research and this paper proposes a semantic interoperability framework for solving this problem by allowing healthcare stakeholders and organizations (doctors, clinics, hospitals)using various healthcare standards to exchange data and its semantics, which can be understood by both machines and humans. Moreover, the proposed framework takes into consideration the security aspects in the semantic interoperability framework by utilizing data encryption and other technologies to secure the communication for the EHR information while ensuring real time data availability.
Keywords:. Semantic interoperability; Interoperability standards; Electronic Health records(EHR); Artifical Intelligence Techniques. Natural Language Processing (NLP), Word2Vec, skip gram, CBO
Simulation and Modeling Time Response of Double Carrier Avalanche Photodiodes
Get PDFAvalanche photodiodes (APDs) is a particularly sensitive semiconductor device that employs the photoelectric effect to convert light into electricity. APDs can be used in some typical applications, i.e. imaging, optical fiber communications, range finding, laser scanners and laser microscopy. In APDs, avalanche multiplication occurred due to impact ionization when the devices operating at high electric fields. Unfortunately, avalanche multiplication decreases the time response of APDs. The time response of an APD can be characterized by its current response which is represented by the mean current as a function of time. This paper discusses a method to estimate the time response of double-carrier multiplication avalanche photodiodes (APDs). The model, called The Random Path Length (RPL), generates random path length for a carrier to impact ionize and takes account of dead space distance into the calculation. Dead space distance is the minimum distance to travel by a carrier to gain the adequate energy to start first ionization. The RPL is applied into an ideal structure which is assumed has a dimensionless multiplication length, w = 1.0, with electrons and holes moving in constant speeds, ve = vh = v, for various dead spaces distances, d*. In this research, a computer code is generated to compute the mean impulse response, i(t), and the standard deviation, s(t), of APDs all as a function of time
Monitoring for Photovoltaic in Outer Island
Get PDFPhotovoltaic is a renewable energy source that can optimally be used on outer islands and areas that are difficult to reach by the main electrical system network. With good solar energy intensity on a daily, it adds to the advantages of using photovoltaics. In this regard, it is necessary to make a prototype for monitoring the photovoltaic output parameters to measure photovoltaic performance. The parameters that will be monitored on 50 Wp photovoltaic used in this research are voltage using a voltage sensor, current using an ACS712 sensor, and the real power generated. The monitoring results are stored in a database and monitored in realtime based on the website's setting. So that this prototype can be used in several outer islands in Bangka Belitung, which is geographically an archipelag
The Improvement of Paclitaxel Cytotoxicity using Nanocellulose based Nature Resources
Get PDFPaclitaxel is one of the cancer drugs that often used. These drug kills cancer cells by inhibiting mitotic cycle. The efficiency of paclitaxel is increased by the use of nanomaterials as a carrier of paclitaxel. Nanomaterials can enhance encapsulation efficiency, improve the drug release to the target cell following nanomaterial degradation, and improve local accumulation of drug in the cellthrough endocytosis receptor. Nanomaterial that often used forencapsulation of paclitaxel is a polymer derived from natural resources such as cellulose. The advantages of cellulose as a carrier of paclitaxel are nontoxic, biodegradable, and very abundant from various sources. One of the potential sources of cellulose for drug delivery system is cassava baggase
The Potentials of Improving Mineral Source Additional Values in Lampung Province – A Prelimanary Study
Get PDFoai:ojs2.jesr.eng.unila.ac.id:article/2An initial research on non-metal mineral potential was conducted for stones in Lampung Province. Surveys were conducted to some districts/towns in Lampung to take sample materials. Non-metal mineral chemical composition content analysis of stones was conducted with X-RF method. Lampung had mineral potentials of feldspar, zeolite, kaolin, and basalt of 400,500,000 m3; 18,945,000 m3; 9,750,000 m3; 419,071,833 m3 respectively. These mineral source potentials were distributed in eight districts in Lampung. Processing was required to improve additional values for these mineral sources, including crushing, grinding, classifying, and concentration process. Concentration improvements were required for feldspar and kaolin minerals. Wet high intensity magnetic separator process followed by froth flotation process became solutions to reduce high oxide iron content. Feldspar and kaolin could be used for such industries of ceramic, glass, paper, and refractory. Meanwhile, the zeolite mineral from Lampung could be used for agriculture, plantation, and fishery. Basalt stone would have additional values when this was processed into cast basalt, fiber, and ceramic composite