Journal of Science and Application Technology (JSAT - Institut Teknologi Sumatera)
Not a member yet
656 research outputs found
Sort by
The Implementation of Multilevel Colour Thresholding on a Prototype Coffee Machine
No full textThe development of computer vision has expanded widely as there is a vast number of its applications in various aspects of daily life. One of its implementations is integrating the image processing technique on a prototype coffee machine based on the speech recognition system. This study aims to detect the requested coffee colour spoken by users which are black, middle and light. The sensor used in this research is a digital PC camera and the applied method is Multilevel Colour Thresholding. Of all experiments conducted, the image processing technique can work perfectly as the camera is able to identify the requested colour of the coffee solution. Furthermore, the system might be developed by improving the multilevel colour thresholding technique as well as advancing the hardware design in order to establish more robust coffee machine based on the requested colour
Aplikasi Sistem Informasi Geografis untuk Kajian Perencanaan Rehabilitasi Hutan Mangrove di Kecamatan Punduh Pedada, Lampung
Get PDFMangrove forests are one of the coastal ecosystems that are under pressure due to antrophogenic activities, including land conversions to fishponds or aquaculture. On the other hand, the needs for seafood products from these aquaculture activities tend to increase annually. These situations become paradoxes that are often encountered within aquaculture management in Indonesia. Punduh Pidada Subdistrict is one of the areas in Pesawaran Regency, Lampung, that severely suffered from mangrove forest conversion into fishponds. The purposes of this study were to identify the trends in mangrove cover changes over 30 years and to design a mangrove rehabilitation plan in Punduh Pidada Subdistrict. This study used a time-series data of Landsat satellite imagery over 30 years, from 1989 to 2019. The results showed a significant decrease in the mangrove cover areas over 30 years at 83.34 Ha with an average mangrove cover losses at 30.5%. Three zones that are suitable for mangrove rehabilitation plan was then choosen based on the levels of mangrove loss areas, namely first priority rehabilitation plan covering zone 1 (1.7 Ha) and zone 2 (1.5 ha) and the second priority rehabilitation plan covering zone 3 (7.5 Ha). With a planting distance of 1 x 2 meter, the total of seeds needed for the rehabilitation planning are 8,500 seeds for zone 1, 7,500 seeds for zone 2, and 27,500 seeds for zone 3
Identifikasi Keberadaan Intrusi Air Laut pada Kawasan Pemukiman di Sekitar Pesisir Pantai Daerah Desa Sukajaya Lempasing Kecamatan Teluk Pandan
Get PDFSukajaya Lempasing is one of the villages located in Teluk Pandan District, Pesawaran Regency, Lampung Province. Sukajaya Lempasing Village was chosen as a place for research because of its position on the east coast which is directly adjacent to Lampung Bay, of which its groundwater is suspected to be contaminated by seawater, causing the water to be brackish. Field observation, data collection, as well as lithology and air control are needed to see the geological and hydrogeological conditions of this area. Based on the physical and chemical parameters, the well of Hamlet 7 has groundwater and there is no indication of sea water intrusion because the area is very close to hills which may become a catchment area so that groundwater flows out to sea with high pressure. Based on the salinity, TDS, and conductivity values ​​obtained, the well that experienced seawater intrusion was the AJR3 well because it is located closest to the coastline and is supported by an alluvial sediment aquifer that has moderate to high aquifer productivity. The quality of water based on physical parameter data from wells in Hamlet 1, Hamlet 7 and sample AJR4 Hamlet 3 is classified as clean and suitable for daily use. The lithology in the form of alluvial deposits allows seawater intrusion, especially in areas close to the shoreline such as the AJR3 well
Desain Turbin Angin Horisontal untuk Area Kecepatan Angin Rendah dengan Airfoil S826
Get PDFThis research aims to determine performance of turbine rotor performance with a single rotor blade model with a diameter of 0.6 m that has been developed by NORCOWE, while for turbine rotor blades used is the NREL S826 airfoil series. The wind turbines are operated at wind speed intervals of 1-5 m / s. This parameter will also present data in the form of the optimal point of wind turbine rotation and rotor rotation speed. The pitch angles used are 25 °, 30 °, and 35 °. The pitch angle that affects the value of the ideal rotational speed with the highest optimization for the horizontal airfoil turbine S826 is 30 ° with a wind speed of 5 m / s and a rotation of 570 RPM. This is because the greater the pitch angle of the installation, the easier it will be to experience speed trimming but is vulnerable to too large an angle of attack that causes a stall
Characteristics And Mineral Content of Lampung Tengah Ironsands
Get PDFCharacteristics and Mineral Content of Lampung Tengah Ironsands. This study is carried out to investigate the characteristics and mineral content of ironsands from Bekri, Lampung Tengah Regency by using precipitation method. The research was conducted in Physics Laboratory of Institut Teknologi Sumatera from June to September 2018. Mineral content of sand is analayzed with X-Ray Diffractometer. The extraction was varied in temperature and stirring time. The temperature is varied in 80oC, 120oC, dan 160oC and yields different size; 33.76 nm, 11.84 nm and 11.14 nm. Meanwhile, the extraction is varied for 2 hours, 4 hours and 6 hours stirring and yields particle with 43.12 nm, 11.14 nm and 11.32 size. Mineral content of ironsands in Lampung Tengah are dominated by Ilmenite and Potassium Chloride
Possibility and Effects of Recycling Vinyl-Banner Waste into Fired-Clay Bricks for Home Industry in Lampung
Get PDFBricks are regarded as important material in building constructions. Basically, brick is processed by mixing clay and water then burnt under high temperature for a certain duration. Previous study in Indonesia shows that mixing local clay with additional materials could improve its characteristic, especially in terms of water absorption potentiality. Lampung has home industries which run brick making business traditionally. Moreover, this year Indonesian government has been organizing regional elections which attract campaigners to produce more vinyl banners as advertising media. As the event has already passed, vinyl banners eventually become environmental issue since they are not yet well managed. The aim of this study is to investigate the possibility and effect of red bricks mixtures along with vinyl banner waste. Fired-clay bricks dimensions including length, width, and height are 19 cm, 9.5 cm, and 5 cm respectively. Measurement has done by employing water absorption tests. Waste-added bricks absorb more water than the conventional one, about 11% higher. However, rice-husk-ash-added bricks perform similar to the normal bricks, it has slow rate of water absorption. Absorption rate of waste-added bricks also fast and exceed the conventional and RHA-added bricks. Modified red bricks surfaces are uneven, they show cracks and rough edges
Multipurpose cadastre for campus room appraisal
Get PDFThe use of fundamental components of multipurpose cadastre which can be used as basic information and backbone for government policy with geographical information system as a tool are applied in this research method to appraisecampus room. The process to appraise of the facilities in a room begins with collecting facilities data which related to attribute data and defining room boundary which related to spatial data. Room appraisal are analysed by firstly calculate room valuebasedon facilities and activity hours.The method to calculate room value is comparison of quantity and functionality of facilities in every room. Thorough analysis is conducted to separate room value data containing human errors. The determination of which category (high, medium, low) every room fit in is based on distribution of value of every room value which is free of human errors. Room appraisal using this research method will lead to optimize every campus room especially low category room. This approach is also effective way to record number of rooms and facilities of campus comprehensively.
Keywords: Multipurpose cadastre, Appraisal, Geographic Information Syste
The Influence of variation the blade distance against the cocofibers and cocopeat percentage of the coconut fruit from Jambi Area
Get PDFThe influence of variationthe blade distance against the coco fiber and coco peat percentage of the coconut fruit from Jambi area has been done. The study aims to know the percentage of cocofiber and cocopeat produced based on the influence of variation the blade distance of decomposition machine starting from 5 cm, 10 cm and 15 cm. Each round speed will operate for 2 minutes with 500 grams of raw material and use 10 decomposing blades. The results show that (1) distance of blade provides an influence on the value of the cocofiber and cocopeat produced (2) on the distance between the blade 5 cm obtained cocofiber as much as 30% and 62% of cocopeat raw materials. On the distance between the blade 10 cm obtained as much as 34% and cocofiber cocopeat 58% of raw materials, on the distance between the blade 15 cm obtained as many as 32% and cocofiber cocopeat 60% of the raw material (3) maximum of cocopeat cocofiber results on 10 cm distance between the blade
Study of management and development of Observatorium Astronomi ITERA Lampung (OAIL) area: Part I
Get PDFInstitut Teknologi Sumatera (ITERA) and Institut Teknologi Bandung (ITB) also Government of Lampung Province have launched the ITERA Astronomical Observatory or known with Observatorium Astronomi ITERA Lampung (OAIL). On 20th November 2016, the coordinates of the observatory were determined 05o 27’ 71†S and 105o 09’ 39†E with height of 1030 above sea level. Development of OAIL area will be the center of education in science field especially in Atmospheric and Planetary Sciences. OAIL also will become the center of ecotourism in Lampung Province which can become a tourist attraction for the people in Lampung even outside Lampung. Therefore, it is necessary that management and development be directed so that the main function of the observatory is not disturbed. In this research will do assessment about OAIL area by distribute questionnaire to some related agencies to evaluate whether OAIL area can be a specific area or not. From 50 respondents, there are 35 respondents say that OAIL area is appropriate as a specific area and 15 respondents say vice verca
Bedrock Investigation using Resistivity Method as an effort to Provide Subsurface Data at ITERA Campus
Get PDFThis is a study of the application of resistivity method to provide the subsurface data for building/ foundation construction. The subsurface data which provided is resistivity data laterally and vertically and able to be used to investigate the depth and thickness of bedrock. 35 points of 1D resistivity data had been collected in ITERA campus that covered ± 150 Ha. It concentrates at northern to middle part of ITERA campus. Schlumberger configuration was employed with minimum and maximum AB/2 was 2 and 150 meter respectively and 3 varied MN. Iso-resistivity maps show high apparent resistivity value was distributed laterally and vertically. High apparent resistivity value is indicated as a representative of bedrock. The high apparent resistivity zone (resistive zone) was shown in Iso-resistivity map AB/2 2.5 and consistently up to AB/2 15 with the range of high apparent resistivity value is 80.2 up to 210.8 ohmmeter. The resistive zone was distributed laterally in Northeast to West part of study area where the depth and thickness of bedrock in west part is shallower and thicker than others