bluuebunny/crossref_metadata_2025 huggingface dataset:
Geotourism Of Banyuputih Catchment Area, Mount Ijen, East Java, Indonesia
Authors: Wirakusumah Achmad Djumarma , Murdohardono Dodid , Rosiani Diyah
Published: November 2019

Mt. Ijen, especially along the Banyupait/Banyuputih Catchment Area is located within part of 3 regencies in East Java Province which are Bondowoso, Situbondo, and Banyuwangi regencies. Geological Study at Mt. Ijen Complex was conducted to get better understand concerning Characteristics of Geology and geomorphology of Ijen Volcano Complex which compose of highly atractive places to be geotourism purposes. According to the geological study, Ijen Geotourism can be divided into three parts. Firstly, natural views inventory within the Ijen Caldera, along the Banyupait/Banyuputih Catchment Area which are closely related with geological processes; secondly, Man-made geotourism sites at Banyuputih River on the north flank of Ijen Volcano; and thirdly, Planned Buildings that can be made in the future such as a small museum and geosites in opend field including infrastructures that consist of media-tools explaining about the Ijen Volcano and a lot of geological processes related with the all natural views at around Ijen Volcano. On the other hand, the water of the Ijen crater-lake is extremely acid (pH<1). The water of the crater-lake infiltrates into the only one river called Banyupait / Banyuputih River flowing towards the north to reach the north-coast of Java at Asembagus Sub-district, where the pH at this area is still 3-4 after mixing between the acid water and normal water coming from springs within the Banyupait / Banyuputih Catchment Area. A recommended segregation of normal water from the acid water is the best alternative to produce normal water along the Banyuputih River which flows through Asembagus Village. This effort will change the Asembagus citizen to be having much better wellfare. This effort will also support the Ijen Complex to be a good Geotourism, even to lift up the Mt. Ijen Complex to be an International Geopark.
Risk Analysis of Sinabung Volcano Eruption in Karo, North Sumatera, Indonesia
Authors: Prayoga Aldo , Wita Luciana Maorine , Vernon Pinandhito
Published: November 2019

Indonesia is set between 3 colliding active plates, i.e. Eurasia, Indo-Australia, and Pacific Plates. The collision of those plates give rise to many volcanoes in Indonesia, some of them are active, including Sinabung volcano. Sinabung Volcano is an A type volcano with its summit reaching 2460 masl. Sinabung Volcano has been active again since 2010, and its activity has been increasing since then until its latest eruption on 19 February 2018. Its volcanic activities, including its eruption is a threat to local residents in Karo Regency, which live around the volcano. The danger of the eruption includes volcanic ash, hot ash, pyroclastic flow, lahar flow, lava flow, poisonous gas, and ejected molten rock fragments. The purpose of this research is to analyze the threat index of each sub-districts in Karo region where Sinabung volcano is located, in case it erupts someday. The method for this research is secondary data analysis which includes Administrative Map, Disaster Prone Zone Map, Land Use Map, and Population Data. Risk Analysis Table is then produced from the compilation of the data, which shows the threat index of each sub-district. The Risk Analysis Table serves a guide to develop local disaster mitigation and to educate the local residents, providing a more directed and more prepared mitigation and evacuation. Sustainable Development Goals 11, especially in indicator 11.B, strongly implies that sustainable cities & communities require disaster risk reduction strategies. Based on the analysis, several sub-districts, i.e. Payung, Tiganderket, Simpang Empat, and Naman Teran are categorized as regions with high threat index.
Hydrochemical Study in Determining Characteristic Of Fluid And Geothermal Reservoir In Sanggabuana Mountain Area And Its Surrounding, Citeureup, Bogor, West Java
Authors: Millayanti Anis , Perdana Wahyu , Supriadi Wildani , Haryanto Agus Didit , Hutabarat Johanes
Published: November 2019

The research location is administratively included into the sub-district of Citeureup, Bogor, West Java. Geographically, it’s located at coordinates BT 106°54’36”-107°00’00” 6°35’46”-6°40’74” LS. This study aims to determine the temperature of the reservoir of subsurface, the determination of fluid type and the origin of hot water on the surface manifestation and the process of formation under the surface. The method used is descriptive method and chemical analysis including geothermometer and geoindicators based on geothermal fluid geothermal chemistry data. Water chemistry analysis based on geoindicators showed that type of hot water of study area was dominated by sulfate water with relatively high proportion of sulfate (SO4) to concentration of Cl and HCO3 as the outflow area identifier in condition of relative Na-K-Mg proportion and relative K-Na and Mg-Ca concentration diagram at the position is not equal (immature water) and the area is outflow geothermal system. Mg is very dominating with concentration. The high concentration of Mg in calculations and plotting results on immature water indicates that in the formation of surface water geothermal manifestation comes from reservoirs that have been mixed with meteoric water and reaction / interaction with the rocks it passes. Temperature of subsurface manifestations based on geothermometers Na-K-Ca in the study area of approximately 50.617 to 92.6279°C which is belong to low temperature geothermal system.
Understanding Mechanics of Fold-Thrust-Belt through Sandbox Modelling
Authors: Sapiie Benyamin , Hadiana Meli , Furqan Terry A.
Published: November 2019

One of major challenge and complex issue in structural geology is understanding the mechanism of Fold-Thrust-Belt (FTB). Numerous authors have been worked to solve these particular subjects in the past. However, most of them are concentrated in describing internal deformation and their tectonic evolution. FTB deformation is very complex due to their natural geological parameters which control their geometries and styles. Although, in natural example often difficult to analyse this parameter using outcrops or seismic reflection data due to the poor image quality as a results of complex deformation styles particularly in the form of tight folds and steep faults. Therefore, in evaluation FTB need to generate special approach which focus in integrating result of palinspastic reconstructions trough balancing cross-sections and sandbox modelling. This paper will present results from series experiment using analogue sandbox modelling for ramification mechanics of FTB and their associated structures. The main focus of the experiment is evaluating main geological parameters in controlling geometry and fault styles of several different tectonic setting. The results of the study show the importance roles of preexisting structures or basement configuration in controlling end results of FTB deformation styles. Others geological parameter such as variation lithology governed by facies and package thickness are considered as mechanical stratigraphy which play key roles in strain distributions. In addition, their initial slope is among the important parameter which clearly influenced in the final results of deformation. Among all, basement configuration is one of the parameters seems to have major impact in fault styles such as thin-skinned versus thick-skinned FTB. Understanding these initial parameters conditions are very important in order to have the best modelling results representing natural examples. The result of this study was validated using 2D seismic data from Eastern Indonesia which consider as the main frontier exploration hydrocarbon in FTB setting.
The Existence of Tin Placer Relation With Tin Belt In Kundur Waters Area Riau archipelago Province
Authors: Setiady D , Syafri I , Aryanto N C D
Published: November 2019

Placer mineral is mineral deposits that have channels transportation as particles of grains mineral in the river and on the ocean floor. The most common and plentiful placer mineral are rutile, tin, magnetite, ilmenite, zircon and many gems. The existence of ancient rivers flooded after the end of the ice age, of the ancient river many deposited heavy minerals from rocks around the island of Sumatra and Kalimantan. The existence of an ancient channel formed at the Holocene is thought to be a valley that has the potential as mineral deposits to be transported and deposited in the same time with the sediments that fill the valleys. Tin Gravel is one of the heavy minerals in Sunda shelf deposited above the ancient valleys of granite rock The type of granite in Sunda shelf is granite I type (east belt) and S type (middle belt). The granite belt (tin belt) is related to the heavy mineral associations found in the study area, whether derived from granite I type or granite S Type is still a subject of debate among researchers. The granite type classification is based on opaque minerals. The magnetite series comprises of: magnetite, ilmenite, hematite and pyrite, while the ilmenite series consists of: cassiterite, ilmenite, and graphite. Granite in Indonesia islands containing tin mineral included in the middle belt (type S), and east belt (type I). Occurred on a Carbon, Perm and also Triass age. Granites are distributed almost along the coastal to offshore of Kundur Island. Tin (SnO2), or tin include oxide group, brownish, prismatic. Tin deposited is associated with acid igneous rock formed on pegmatites accumulation. In Study area tin founded in 16 samples of seabed surface sediments with the largest content of 0.04124% and the smallest 44 of 0.0006%. The purpose of this study is to know the existence of placer tin content in marine sediments in Kundur waters, its relation with tin belt (granite type), whereas the purpose of the study is to know the source of tin placer.
Structure System and It Controls to Mineralization of Primary Tin Deposit, Airdibi Area, Jebus Subdistrict, West Bangka, Bangka and Belitung
Authors: Prihutama Faiz Akbar , Syarifuddin Muhammad , Ryandhika Angger Imas Asshidiqie Faric , Widya Yogatama Suprapto Angga , Aviandono Reza
Published: November 2019

Bangka Island is one of the most potential areas with abundant mineral resource in indonesia. The main commodities in the exploration of metal mineral deposits on Bangka Island are tin. Tin deposits located on Bangka Island are formed from acid magma produced of collision. The research location is in Airdibi area, Jebus subdistrict, West Bangka regency, Bangka and Belitung province. The objective of this research is to know the characteristics of primary tin deposit by observing the geological aspect, and the distribution of alteration and mineralization. Research method are used is surface geological mapping. Analyzes performed to process surface geological data are petrographic analysis, mineral graphic analysis, ASD analysis (Analitycal Spectral Devices), and XRF (X-Ray Fluorescence) analysis. Stratigraphy of this research areas from the old to the young, namely the Complex Pemali Uni, the Tanjunggenting Sandstone Unit, the Fine Grain Granite Klabat Unit and Alluvial Deposit. Assemblages Minerals alteration at the study sites results from an ASD analysis showing the minerals resulting from a hydrothermal process consisting of six zone there are Tourmaline + Muscovite + Chlorite + Illite + Smectite, Silica + Tourmaline, Illite + Smectite + Chlorite + Tourmaline, Illite + Smectite + Tourmaline, Muskovite + Quartz + Illite + Smectite + Halloysite, Kaolinite + Illite + Smectite. From the XRF analysis showing the various grade of tin on the vein. The geologic structure that developed in the research area is highly controlling the primary tin mineralization process. Veins with a relatively NW-SE direction which is an extension faults product has a higher level than a sheeted veins with a Relatively NE - SW direction which is a compression faults product. Based on field data and the results of laboratory analysis, deposit type greisen deposits in the vein phase.
Integrated of Static and Dynamic Modeling Workflow for Belimbing Oil Field Development of Talangakar Sandstone Reservoir, South Sumatra Basin
Authors: Gadi Karolina Bala , Stephani Grace , Wicaksono Ricky , Muslim Abdurahman F. , Wismoyo Yoga
Published: November 2019

The Belimbing Field S layer is a layer of the Upper Talangakar Formation (TRM) with a transition precipitation environment deposited in the syn-rift phase with the upper Oligocene lifetime up to the lower Miocene productively producing oil. This is a sandstone layer that contributes the largest production current with 645 bopd production (96% watercut) of OOIP 107 MMBBL. Water injection at Bel-10 wells and Bel-11 wells was first performed in October 1997 with an injection rate of 762 bwipd. The water injection is performed peripherally from the north flank of the star fruit structure (Central Belimbing block) with the initial goal of pressure maintenance even though the water is injected into the oil zone in the S layer. There is a significant increase in pressure and oil gain in the monitor wells in the injection area. With the last RF of 30% indicates that this layer still has a lot of potential to be developed by waterflood method. The BEL-19 injection in the Eastern Block from 2005 to 2015 was detected by success with increased pressure and increased production at BEL-12, BEL-14 and BEL-27 wells. As an effort to increase production, field development studies were conducted for GnG study and dynamic modelling. Limitations on the number of core data (SCAL and RCA) become obstacles in G & G and Reservoir modeling, so in determining rock typing used core data from the nearest field (LimauNiru) is L5A-240 well. In this method also performed synthetic data processing curve relative permeability and capillary pressure by evaluating production data. The distribution of artificial intellegent (AI) and wavefom is required to know the distribution of Facies and reservoir properties so as to get a more detailed description and heterogeneity of the reservoir. From the data above, we obtain rock typing to distribute reservoir property in 3D static and dynamic model. Through the initialization process, history matching and forecast is then processed the best scenario, the waterflood pattern in the form of inverted five spots and primary infill to optimize the recovery of oil recovery.
Quartenary Sediment Facies Distribution in Meandering River Environment: Study Case at The Kampar River, Rumbio Area and Surroundings, Riau Province
Authors: Revanda Muhammad , Yuskar Yuniarti , Eka Putra Dewandra Bagus , Sari Dilla Permata
Published: November 2019

Study area is located on the Kampar river in the district Rumbio and surrounding areas, located on the upstream side which is about 100 kilometres from the source of the sediment that Bukit Barisan mountain, Kampar river has a length of 413.5 km, the average width of 143 m and a depth average 7.7 m. This river is a river with meanders type carrying supplies suspended sediment and bed - load (mixed load) together with a low energy. This study aims to investigate the characteristics of sedimentary facies sediment quarter and deployment. The method used is a field survey to obtain core data rocks (1-3 meters) by 8 points wells, and cross sections measured(trenching) which is a layer of sediment that have been exposed (1-8 meters), then performed the sieve analysis to determine the grain size and sedimentary facies analysis and continued with sedimentary facies distribution map-making quarters in the study area. The facies sediment formed that Channel with the characteristic blocky to fining up succession have dominant deployment is the southernmost area of research with a thickness of 200 – 320 cm. Deployment sediment sand bar with characteristic coarsening up succession is in the northeast and southeast regions of study area with a thickness of 125 - 145 cm Next oblique accretion with upward fining characteristics that are in the north-eastern part of the area of research with a thickness of 40 cm. As well as having overbank sediment that contains a lot of organic material such as roots, stems, and foliage, with its spread is in the west and southwest area of research with a thickness of 100-160 cm. meandering river system leads to changes in sedimentary facies laterally intensive.
Crystal size distribution (CSD) of plagioclase phenocryst-microphenocryst and the calculation of crystal resident times in the continuous central eruption sequences of Mount Lasem, Central Java, Indonesia
Authors: Nugroho R P , Disando T , Kurniawan I A , Abdurrachman M
Published: November 2019

Mount Lasem is an extinct volcano in Central Java. Based on field work, five continuous central lava eruption sequences were identified. The rocks sampled from those lava units were classified as andesite which exhibit sign of magma mixing based on textural features from optical microscopy observation. With consideration of the importance of plagioclase in magma cooling reconstruction, a quantitative approach using crystal size distribution (CSD) of plagioclase phenocryst (long axis >=0.5 mm) and microphenocryst (long axis 0.1 – <0.5 mm) from five lava units was conducted. This method, which has never been applied to the eruption products of this volcano, revealed variation of magma resident time during the continuous central eruption phase of Mount Lasem. By using G=10-10 mm/s (growth rate) for plagioclase phenocryst and microphenocryst, residence times of the magma for both populations were predicted at 63 – 120 years and 8 – 18 years respectively. This results show that there are different time and mechanism constrains in the crystallization of the two populations prior to eruption events.
Geochemical Approach to Reveal The Genetic Occurrence of Gibbsite, Relative to The Parent Rock Type in Lateritic Bauxites
Authors: Nugraheni R D , Sunjaya D
Published: November 2019

Situating in a tropical climate, will be favourable for Indonesia and Malaysia to have an intensive weathering and a concentration of lateritic bauxite. The study area takes place in Kuantan, Pahang State, Malaysia and Landak area, West Kalimantan, Indonesia. The study area has different type of parent rock, topography and drainage condition, which will also cause the different characteristics of alumina minerals in bauxite. One of the common form of alumina minerals is known as Gibbsite [Al(OH)3]. The objective of this research is to investigate the genesis of gibbsite from two different parent rocks. Samples were taken and collected from pitting, analyzed for Al2O3, Fe2O3, SiO2 and TiO2 using XRF and XRD examination. The parent rock of bauxite in Kuantan is basalt, meanwhile, in Landak, ranges from granodiorite to andesite. Petrography and XRD analyses of Kuantan bauxite shows predominant gibbsite, with minor amount of geothite, hematite, kaolinite, illite, quartz and feldspar, while in Landak, mineralogically consists of variant amount of gibbsite, goethite, hematite, kaolinite, illite and quartz. In Kuantan, the amount of Al2O3 varies from 23.6% - 51.01%, nearly similar than that in Landak that varies from 31.35% - 55.03%. Gibbsite in Kuantan is assumed as a transformation of Ca-rich plagioclase and Ferromagnesian- silicate minerals, on the other hand, gibbsite in Landak was produced from direct weathering of primary Al- silicate minerals (Na- plagioclase and K-feldspar). From study, it can be inferred that gibbsite formed from a layer of silicates and will concentrated in finer clay as a weathering product. Moreover, the different types of parent rock will produce different types and amount of alumina minerals. The study will be beneficial to predict the existence of potential alumina minerals in lateritic bauxite.
Analysis Rock Mass Rating (RMR) Elevation Inlet Diversion Tunel Luewikeris
Authors: Rahman Den Habib Ibnu , Rachman Sofyan
Published: November 2019

Leuwikeris Dam Project located in Handapherang Village, Cijeungjing District, Ciamis Regency, West Java Province is one of the dam projects built on volcanic sediment rocks including in the Old Volcanoes Formation. Limit Equilibrium Method (LEM), is a method used to find the Rock Mass Rating (RMR) value in each elevation on the slope of the Dodge Tunnel Inlet. Based on the analysis, the result of its RMR value at the elevation of 130 meters has rock mass class is II (Good), elevation of 140 meters has rock mass class is II (Good), elevation of 145 meters has rock mass class is III (Medium rock), and elevation 157 meters have a class of rock mass is III (Medium rocks).
Risk Analysis of Slope Stability Open Mine With Probability Method PT. Timah (Persero) TBK Batubesi Area, Damar, East Belitung
Authors: Paramesywara Teguh Samudera , Setiawan Budhi
Published: November 2019

The stability of mining slopes, especially on tin minerals, has different criteria than other minerals. The safety factor that becomes the reference value of the stable slope of the mine can also reflect the movement of the land (Lubis, 2012 in Wijayanti, 2015). In processing these FK values often do not take into account that all parameters have equal oppurtunity to represent those parameters (Azizi, 2012). The probability method is a way of anlyzing the risk of mining slopes by including several parameters including wet density, dry density, cohesi and friction angle. The research aims to get FK and PK values that are stable and efficient to be mined because the smaller than the slope is opened, the smaller the tin mineral recovery and the higher the stability of the slope and vice versa. To get the value of FK and PK need to do slope analysis with limit equilibrium method and probability method then modeled with Slide V.6.0 software and calculation with Excel program. Data processing is from 4 drill points found that GT_01 with value FK > 1,3 indicating that the slope safe and movement of soil can occur and get value PK 0,5 – 0,6 %. For GT_02, GT_03 and GT_04 obtained unsafe slope results so optimization is necessary.
Identification Of Sinter Silica Evolutionary Manifestation As A Bicarbonate Travertine Based On Isotope 18O And 2H Review Of Local Meteoric Water Line Curves As Determinant Of Outflow Fluid Reservoir In Cisolok-Cisukarame Geothermal System
Authors: Gleamen Tubagus , Lutfi Ahmad , Didit Agus , Giffari Farhan Rijal
Published: November 2019

Cisolok geothermal system located in Cisolok district, Sukabumi regency has undergone an evolution. One of the indication is the transformation of its surface manifestation from Silica sinter to Bicarbonate travertine. The existence of this travertine indicates the presence of bicarbonate spring and reservoir systems temperatures below 150°C, which are the hallmark of two-phase liquid dominated geothermal systems. Analysis of stable isotopes (18O and 2H) is used to identify the reservoir water’s source affecting the evolution of Cisolok’s surface manifestations. The stable isotopes are then compared with the global and local meteoric water line. The contents of isotope 18O and 2H, after being compared with the global and local meteoric water line, gives a visual data that’s adjacent and in line with the local meteoric line. This indicates that the hot water from Cisukarame manifestation originates from local meteoric water, which is the result of evaporation and precipitation from the local water. The evolution of the geothermal system in this area is indicated by the increase of isotope 18O content in water and a decrease of the same isotope among the rocks. Indication of the temperature reduction in this area, which is estimated to have happened over a period of 10,000-50,000 years, involves a diagenesis reaction and an amorphous silica hydrolysis that caused the increase of 18O and dD levels in the water. With two-phase liquid dominated geothermal systems, there’ll be many outflows that bring diverse manifestations. The results of the data analysis show that the evolution of the Cisolok geothermal system occurs due to the contact between reservoir fluid and limestone lithology at a depth of 350-600 meters which causes the Cl water content in the system to transform into HCO3 water content and alter the surface manifestations of silica sinter containing amorphous silica into a travertine containing bicarbonate.
Application of microwave remote sensing polarimetric synthetic aperture radar for the new geological map of peatland distribution, humidity and its sample properties in Regency of Siak, Riau Province, Indonesia
Authors: Kausarian Husnul , Sumantyo Josaphat Tetuko Sri , Takahashi Ayaka , Widodo Joko , Izumi Yuta
Published: November 2019

Siak Regency is one of the areas in Indonesia that has peat areas. Events of forest fires occurring in Indonesia caused by the dryness of peatland attracted the attention of many parties to pay attention to this land as a serious matter. From this study, we found variations in soil moisture conditions around 11 - 50%, associated with soil content, the limiting pH parameter in peatland is about 3 to 4. With the approach of remote sensing microwave technology and field validation measurements by counting humidity, sample properties, it is known that the character of the peatland as well as produce the latest geological map for the distribution of peat and the region contained within the Regency of Siak.
Hydrogeology And Hydrochemistry Of Shallow Groundwater And Surface Water And Potential Water Pollution In Gadung District, Buol, Central Sulawesi
Authors: Yanti Zikri , Putra Doni Prakasa Eka , Hendrayana Heru
Published: November 2019

Inhabitants of Gadung District depend on Labuton River and shallow groundwater as their water resources. But issue of river pollution caused by gold mining activities operated for decades around upstream area of Labuton River becomes challenge for their water demands. In the other hand, shallow groundwater from dug wells has low resistance for contaminants from urban activities around downstream area. This study aims to analyze characteristics of hydrochemistry and to identify pollution cases in research area. In order to recognize flow path of shallow groundwater water table in research area have been measured.EC, pH, and TDS from water samples (13 samples from Labuton River and 16 samples from groundwater) has been measured. Na+, K+, Ca2+, Mg2+, F-, Cl-, NO3
-, SO4
2-concentrations of the samples measured using Ion Chromatograph. HCO3
-concentrations of the samples measured using Alkalinity Checker. Hydrochemistry Labuton River which is dominantly associated with Dolokapa Formation is controlled by rock weathering process. It is indicated by TDS 50 - 200 mg/L and total cationic charge 428,7 - 2973,8 μeq/L. Labuton River and shallow groundwater in research area has hydrofacies Mg+HCO3 type generally, but Mg+SO4 type is shown along ± 5.2 km of water flow of Labuton River from mining area to the downstream zone which is categorized as MIW (Mining Influenced Water). MIW in Labuton River has high concentration of SO4
2- (9.27 to 35.12 - 36.03 mg/L), high TDS value (100 to 140 - 160 mg/L), and low pH (6.3 to 5.4 - 5.6) from its original water. Labuton River water is polluted by contaminant from mining activity along ± 2.8 km water flow indicated by pH 5.4 - 5.6. Groundwater in some part of study area is polluted by urban contaminant indicated by concentration NO3
-> 3 mg/L (3.33 - 19.43 mg/L).
Ecotourism Potential of Batu Gelap Cave, Kutai Kartanegara, East Kalimantan
Authors: Sasmito Koeshadi , Wahyudi Agus , Sutan Syamsidar , Alam Fajar
Published: November 2019

Batu Gelapcave located in Suka Maju Village, Tenggarong Seberang District, Kutai Kartanegara Regency. Batu Gelap Cave is geologically included in Pulau Balang Formation, which is deposited in the transition environment or Back Barrier. Deformation that occurs in the Middle-Miocene of the geological structure of folding and faulting. Geomorphology of the study area can be divided into four kinds of (1) Landform are mountainshomocline ororigin (S1), (2) Hilly landforms homocline (S2), (3) Landforms swamp(F1) and, (4) Alluvial landforms (F2). The height of the area between 25 - 125 mdpl, slope 20-40%. The lithology in the area are fossiliferous limestones, packstone - grainstone, crystalline carbonate, and packstone with clay inserts. There are stalactites, stalagmites, and underground rivers with various conditions in the cave. In some parts of Batu Gelap Cave area, there is a historical relic site that has historical past. A good understanding of the geological and historical potential of Batu Gelap Cave area makes this area has a unique appeal in the development of tourism-based area.
Development of Community-Based Ecotourism in Ngargoyoso District, Karanganyar Regency, Central Java Province
Authors: Muryani Chatarina , Santosa Sigit , Prihadi Singgih
Published: November 2019

This research was aimed to (1) identify tourism objects in Ngargoyoso District, Karanganyar Regency and (2) analyse tourism readiness in Ngargoyoso District to be developed into community-based ecotourism. Data was collected through observingthe environmental conditions, determining tourism objects locations through GPS, and interviewing managers, communities and tourists. The development of Community Based Ecosystem readiness evaluation follows CBE which was developed by WTO and INDECON with regard to four aspects namely socio-economic, socio-cultural, environmental and management aspects. The results showed that: (1) in Ngargoyoso Sub district there were 19 tourism objects, consists of 2 cultural tourism objects, 5 original natural objects and 12 artificial natural objects; (2) The results of the CBE readiness evaluation of Ngargoyoso Sub district were, 5 tourism objects were in very good categories, 12 objects were in good category, one tourismobjectwas in medium category and one tourist objectwas in very bad category.
Implementation of Fuzzy Mamdani Logic Method for Student Drop Out Status Analytics
Authors: Irfan Mohamad , Alam Cecep Nurul , Tresna Dea
Published: November 2019

One of The Contribution of Information Technology in the World of Education at University is the System of Executive. the Information that needed by the Executive Department is an Information Student Data that supposed to be drop out. all this time the Process to determine the Student Faculty of Science and Technology Status as Drop out at Sunan Gunung Djati (SGD) States Islamic University Bandung, had not to apply the Automatic Sysytem, based on this case, therefore we need a Solution to handle it, by Develop the Executive Information System. The Method that we need for Developing this System is by using the Fuzzy Mamdani Logic Method, there are 4 Steps to bring the Output of this Method 1.) Creating a Fuzzy set, 2.) Application of Function Implication 3.) Composition Law, 4.) Defuzzification. Based on this research, we will make a comparison between Manual Calculation and System Calculation, with the Accuracy 100%. The final result of this Method can be referenced for System Executive to Analyze the Student that should be given a Warning or Drop Out.
Technology Application In Education And Learning Process
Authors: Sudarsana I Ketut , Nakayanti Ayu Ratih , Sapta Andy , Haimah  , Satria Erwinsyah , Saddhono Kundharu , Achmad Daengs GS , Putut Endrayana , Helda Trisna , Mursalin M.
Published: November 2019

Talking about education, firstly, education is a conscious effort in realizing the learning process in order to make students actively develop their potential to be able to have noble character, intelligence and personality that are good for themselves and society. Along with the development in the world of education that continues to change rapidly or develop rapidly which can change the mindset of educators, from being rigid to modern. That is very influential to education. The main purpose of education is to produce or make someone to have quality, knowledge and character, so that he has a broad view to get the desired ideals and to be able to adapt in environment. Education provides motivation to be a good person in all aspects of life. Education itself is a very important thing in human life. Therefore all citizens have right to get good quality of education. In education the role of a teacher is very important. A teacher is an educator, a teacher and an example for his students. Teaching is a very complicated matter, not as easy as we imagine when teacher is teaching, he must know each character of the students. In addition the teacher must also prepare designs before conducting the teaching and learning process. The teacher must think of ways that are used to increase students’ interest in learning and improve the quality of teaching. With the rapid development of technology, teachers must be able to use these technological developments in the teaching and learning process in the classroom. So that there will be no lag in that development. In the teaching and learning process the teacher only uses the monotonous lecture method that will reduce students’ interest in learning because students may feel bored or think it is not interesting for them. Therefore the teacher is able to apply the technology in learning. It is usually known as Educational Technology. Educational Technology is a medium that is used as a tool in education or the learning process to be more effective, and can be easily observed by students. The purpose of this Educational Technology is as a media to solve problems in learning that can improve learning performance. So that it can increase learning interest for students. Educational technology also help teachers in making media used in the learning process, so that students can attract the desire to learn. By Educational Technology, teachers can create media that enable them to apply the material presented with images on the internet. The material can be presented through videos or stories on YouTube. It is the same as making a TTS column from this technology the teacher can make questions through this TTS. So there is a touch of games in learning. This can increase students’ desire to learn. In addition, this can also make students more active and critical in learning activities.
The Implementation of The E-Learning Concept In Education
Authors: Sudarsana I Ketut , Armaeni Ketut Wira Adi , Sudrajat Dadang , Abdullah Dahlan , Satria Erwinsyah , Saddhono Kundharu , Samsiarni  , Setyawasih Rianti , Meldra Delia , Ekalestari Susi
Published: November 2019

Application of web technology (Web-Based Education) can help learning process for an educational process can be called e-learning (electronic learning). The technology offered is speed and unlimited place and time to access information. Teaching and learning activities can be done easily by students anytime and anywhere. The boundaries of space, distance and time are no longer complex problems to be solved. The way to learn through the web is that there is access to information sources via the internet. The development of e-learning is three possibilities in the development of an internet-based learning system, namely the web course, web centric course, and a web enhanced course. Learning or e-learning is also inseparable from various advantages and disadvantages. However behind it all, learning through e-learning is very supportive in the current learning process.
The Effectiveness of Learning Media Developed With the Kahoot Application on the Subject of Management Information System
Authors: Suja’i Muhammad Imam , Rukun Kasman , Ridwan  , Hayadi B.Herawan , Yanto Budi , Permatasari Ririt Dwi Putri
Published: November 2019

From the lecture conditions of management information systems, it was found that the learning media used were less attractive and less interactive. Learning is centered on the teacher through a blackboard or presentation. Students become less motivated and tend to be bored in class. The development of learning media is carried out by the 4D method, namely Define, Design, Develop and Disseminate. Kahoot is a game-based interactive learning platform that can be used as educational technology in schools. Kahoot is an appropriate platform for developing learning media for management information systems courses. After developing learning media using kahoot, researchers found that learning activities in the classroom became more interesting and interactive and motivated students to learn. To determine the effectiveness of the use of instructional media, effectiveness tests are carried out. Based on the pre-test, it was found that 28 students obtained an average score of 64.29. Then after the learning media implementation test was carried out, a post-test assessment was conducted and an average score of 79.82 was obtained. There is an increase in scores after using learning media. So, it can be concluded that the learning media developed is effective in improving learning out-comes.
Development of Digital Information Management Learning Media Based on Adobe Flash in Grade X of Digital Simulation Subject
Authors: Sabtu  , Rukun Kasman , Sukardi  , Putri Permatasari Ririt Dwi , Hayadi B.Herawan
Published: November 2019

This study aims to produce learning media in the form of interactive multimedia that is valid, practical and effective for basic competencies in managing digital information on digital information management subjects. This research is motivated by low learning outcomes and conventional learning on basic competencies in the application and management of digital information in the Department of Software Engineering at Ibnu Sina Vocational School in Batam. The type of this research is development research using the IDI (Instructional Development Insttitude) model. This model was developed in three stages, namely difine, develop and evaluate to see whether Interactive Multimedia is valid, practical and effective, this study conducted a one-to-one / individual evaluation expert, large group evaluation and field testing by looking at learning activities and learning outcomes of students. The results of this study indicate that Interactive Multimedia in the design / media aspect was 91.67% with very valid categories, 91.11% digital content / material management aspects with very valid categories, teacher practices were 92.08% with practical categories, practicalities of students are 91% with very practical categories. Interactive Multimedia effectively improves student learning outcomes is 81.25% (24) gets a value of ⩾ KKM and 18.17% (4) students have not reached KKM.
Application of Data Mining Prediction of Electricity Deviation Flow Using Metode Backpropogation at PLN Binjai Area
Authors: Pardede A M H , Andrayani Febi Wahyu , Nurdin  , Abdullah Dahlan , Erliana Cut Ita , Dana Raditya Danar , Dikananda Arif Rinaldi , Fasya Firmanda , Rahaningsih Nining , Andriani Meri , Subekti Purwo , Elisa Erlin , Sohibun  , Noor Hasan Siregar Muhammad , Ponidi  , Winarno Edy , Ketut Sudarsana I
Published: November 2019

PLN is the only state-owned electricity company that provides and regulates electricity to the public. However, in the provision of electricity to every community, there are many frauds or irregularities in utilization of electricity by irresponsible parties was found by PLN. Electricity deviation caused by irresponsible parties, like the theft of electricity can have a tremendous impact due to loss of electrical energy. Electricity Deviation, using Electricity Deviation data for 3 years, from 2012 to 2014. Sales data processed by the network, in the form of amount of Kwh deviation per month. The data needed in the process of analysis of this Neural Network is pure database results by taking the input variable in the form of Amount of Kwh Deviation and Amount of Kwh Deviation for the next Month for the following year as output. Electricity for 3 years is processed into Matlab using GUI facilities, to produce information on the predicted results of the Kwh Deviation in November 2014 to March, May, June, August, November, December 2015 experiencing has increase in Kwh, while in April July, September, and Okrober 2015 decreased.
Prototype of Learning Applications for Modern Cryptographic Techniques Using RC4 Algorithms to Support Computer Security Courses
Authors: Iqbal Muhammad , Nazar Nasrul , Erliana Cut Ita , Irwansyah Defi , Kurniasih Nuning , Susilo Edi , Iskandar Akbar , Suryani Rini , Supriyono  , Sudarmaji  , Permana Erwin Putera , Erwinsyah Alfian , Sujinah  , Haimah  , Sudarsana I Ketut
Published: November 2019

The security of information in this global era is increasingly becoming a vital need in various aspects of life. An information will have a higher value when it comes to aspects of business decisions. This study presents a learning application to explain how to secure data using cryptographic techniques. This study aims to design a prototype learning application of cryptographic techniques using algorithm RC4 method. Based on the results of data analysis and after completing the design of RC4 algorithm cryptographic learning software, the authors found this software shows every step and stages of the processes (data input process (Plaintext or Ciphertext string), Key padding process (U), formation process in S-Box table, the Key-Flow formation process (K-keystream), encryption process and decryption process) contained in RC4 algorithm cryptography, so it can help understanding or learning work procedures of algorithms in the cryptographic method. Microsoft Visual Basic 2008 is an IDE (Integrated Development Environment) application that is used to create and develop software. In this application there were various features that facilitate programming such as compilation, debugging, project settings, designing and editing visual interfaces, and so on.
Body Height Detection System Using Russel & Rao Method
Authors: Abdullah Dahlan , Erliana Cut Ita , Irwansyah Defi , Rahayu Sri , Khairani Nurul , Moelyaningrum Anita Dewi , Vebrianto Rian , Wiliani Ninuk , Maifizar Arfriani , Mukarromah Nur , Satria Erwinsyah , Jefri Riny , Sudarsana I Ketut
Published: November 2019

Height body detection is an interesting thing to study, because of height is often using in various fields. Measurement height with a manual tool, it is very easy to use. Retrieval of objects using a webcam camera then measured with the Russel & Rao method. This system was built using Borland Delphi 07 programming language. His research method was obtained from literature studies of various books and articles which consisted of several stages, like the grayscale stage, and russel & rao. And at the time of height detection, this system will doing well if around the object that will be taken into account there are no other objects, such as the meter will move to another thing. So to simplify the measurement, you must choose the right place. Russell & Rao’s performance has a true detection percentage of 65%. Based on 8 sample tests that have been carried out, only 3 have been detected correctly.
Improvement Suggestion Performance of Blowing Machine Line 4 with Total Productive Maintenance (TPM) Method at PT. Coca-Cola Amatil Indonesia Medan Unit
Authors: Irwansyah Defi , Fahlevi Harahap M Reza , Erliana Cut Ita , Siregar Nurintan Asyiah , Afrianto Jamil , Nurmawati  , Irawan Dwi , Setyawasih Rianti , Herfianti Meiffa , Nengsih Mimi Kurnia , Rahaningsih Nining , Kurniawati Renny , Ponidi  , Sudarsana I Ketut
Published: November 2019

Maintenance is an activity to maintain facilities or equipment of the factory and make repairs or adjustments to the necessary replacement to satisfactory condition of production operations in accordance with what is planned. Companies often experience damage to the Blowing machine so that interconnected machines cannot be operated. The purpose of this study was to improve the performance of Blowing line 4 engines with the Total Productive Maintenance (TPM) method at PT. Coca-Cola Amatil Indonesia Medan Unit, also to determine the level of Blowing machine performance based on the analysis of overall equipment effectiveness (OEE) at PT. Coca-Cola Amatil Indonesia Medan Unit. The method used in this study is the overall equipment effectiveness (OEE) method to measure Ishikawa’s treatments and diagrams to compare and propose low engine performance. The results of data processing shows machine maintenance has not comply the OEE standards in July 81.48%, August 81.48%, September 78.07%, October 81.22%, November 78.08%, and those that fill the standards in June amount to 86.48%, with losses that most affect the effectiveness of equipment in line 4 blowroom machine is Equipment Failure Losses of 11.42% based on the results of the study, the proposed improvement in engine performance is to provide training to employees, and increase operator awareness. against engine damage, thus the production process will run smoothly.
HFLTS-TOPSIS With Pseudo-distance in Determining The Best Lecturers
Authors: Abdullah Dahlan , Hartono H , Saddhono Kundharu , Kurniasih Nuning , Iskandar Akbar , Rianita Dian , Purwarno  , Setyawasih Rianti , Satria Erwinsyah , Nuryanto Tato , Herawati Lilik , Sujinah  , Sudarsana I Ketut
Published: November 2019

Decision making is sometimes faced with a situation where assessment is given in the form of linguistic variables, which have a certain range of values so that decision making cannot be given in the form of numerical values. One approach commonly used is Hesitant Fuzzy Linguistic Term Sets (HFLTS) which is a multi-criteria and multi-alternative decision making method. In TOPSIS which has the concept of distance measurement, basically the chosen one is the best alternative is an alternative that has the closest distance to a positive solution and the farthest distance with a negative solution. The incorporation of HFLTS-TOPSIS has the advantage that decision making can be done in the form of variable linguistics and also a situation where there are benefit criteria and cost criteria. This study will use the HFLTS-TOPSIS approach that has been modified in the distance calculation section so that distance calculation is based on the difference of preference degree between the two HFLTS. The results of research conducted by a number of researchers show that using pseudo-distance will provide advantages compared to the standard HLFTS-TOPSIS. Pseudo-distance HFLTS-TOPSIS will be applied in the selection of the best lecturers. The criteria used in this study are: Student Satisfaction, Research, Number of late, and number of complaints from students.
Sms Encryption Application Using 3Des (Triple Data Encryption Standard) Algorithm Based on Android
Authors: Nurdin  , Abdullah Dahlan , Fatimah Widia , Ratnadewi R , Kurniasih Nuning , Rianita Dian , Riasti Berliana Kusuma , Sofian Edi , Karnadi Very , Liantoni Febri , Kurnia Dian Ade , Cahyanto Triawan Adi , Rahman Arief Aulia , Sudarsana I Ketut
Published: November 2019

Security is an important aspect in communicating using information technology. SMS is a service provided by mobile phones to communicate by sending short messages quickly and cheaply. Short message delivery is done by SMS network, so the messages are not sent directly to the destination mobile phone. Therefore the messages that are sending by the SMS service need to be protected, so the security of the messages sent to the SMS network remains protected by its confidentiality. In this study the software will be built to improve the security of messages on SMS communication. The software that is built serves to encrypt messages that will be sent and decrypt messages with entered through the SMS service. Software built using the 3DES (Triple Data Encryption Standard) algorithm. The 3DES algorithm is a flow algorithm (block cipher) which belongs to the type of symmetry key cryptography system. The implementation of the 3DES algorithm on software that is built using the Java-based programming language Java. So only software that uses the Android operating system can use this encryption and decryption application.