bluuebunny/crossref_metadata_2025 huggingface dataset:
Environmental Vulnerability on Tsunami Hazard, Cisolok Village, Sukabumi
Authors: Husna Amila , . Supriatna , Putut Ash Shiddiq Iqbal , Dwi Mandini Manesa Masita , Ristya Yoana
Published: December 2019

Indonesia is one of the countries located in a series of volcanoes or commonly called the ring of fire. This situation later became vulnerable to disaster events in Indonesia. Tsunami is one of the most vulnerable disasters in Indonesia, with the shape of this country with many volcanoes surrounded, one of which is Cisolok Village. This study aims to analyze tsunami hazard areas and analyze environmental vulnerability to tsunami hazards in Cisolok Village. In the tsunami hazard, this paper use the map that has been issued by InaRisk BNPB, for environmental vulnerability three factors are seen, namely land cover, geomorphology and geology. The method used is spatial analysis and descriptive analysis. As a result, the tsunami hazard map shows Inarisk using inundation heights up to 10 meters with three classifications namely low, medium and high. The environmental vulnerability to tsunami map is divided into three classes where 25.67% low vulnerability, 30,69% medium vulnerability dan 43.14% high vulnerability.
Analysis of the Threat of Floods in Kendal Regency Using Fuzzy Analytic Hierarchy Process and the Geo Hazard Map Methodology Catalog
Authors: S Firdaus Hana , L Nugraha Arief , Sukmono Abdi , R Valdika Rahmat
Published: December 2019

Based on BPBD (2018), Kendal Regency in 2017 have occurred 154 hazards, that are 30 floods, 19 landslides, 18 fire hazards, 20 stormwind, 13 marine accidents, and 54 other hazards. Most of the Kendal Regency area is dominated by floods hazard. Disaster management can be followed up with the initial stage in mapping of hazard threats. The methods that used in mapping of hazard threats are varied depending on the hazard parameters used. In this study, using two methods to analyze the threat of floods using Fuzzy Analytic Hierarchy Process and The Geo Hazard Map Methodology Catalog. Analytic Hierarchy Process (AHP) is a decision support method to determine priority of hierarchy with the main input based on experts. Fuzzy Analytic Hierarchy Process is an Analytic Hierarchy Process (AHP) method, that developed with fuzzy logic theory, especially triangular fuzzy which is expected to minimize uncertainty so that the results wpuld be more accurate. The results in this study can be used as input for the authorities to undertake preventive hazards management.
Integration PS-InSAR and MODIS PWV Data to Monitor Land Subsidence in Semarang City 2015–2018
Authors: Azeriansyah Reyhan , . Harintaka
Published: December 2019

Land Subsidence is a slow on set disaster that can be found in coastal areas such as Semarang City. The cause is changing natural conditions and human activities. The observation method that is often done for this phenomenon is GNSS observation. The GNSS observations do not cover the entire area are the disadvantages of this method. Solution that can be used is to use a multi-temporal Interferometric Synthetic Aperture Radar (InSAR) method called Persistent Scatterer Interferometric Synthetic Aperture Radar (PS-InSAR). In its application, PS-InSAR has a problem in the form of tropospheric errors that cause signal interference on SAR sensors when making acquisitions that contained in every Synthetic Aperture Radar (SAR) image. MODIS with the NIR band provide Precipitable Water Vapor (PWV) to estimate water vapor levels in the atmosphere. This component can be used in the PS-InSAR in order to eliminate the tropospheric effect on each image so that errors can be minimized and optimize the work of the PS-InSAR method. Based on the value of PS-InSAR before and after tropospheric correction, it is known that the area of Semarang City experienced a rate of land subsidence and the rate of uplift. Land subsidence rate occurs along the northern region, northeast to the east of Semarang City. Uplift rate only occurs in the southeast region due to dumping excavation activities for development and Banjir Kanal Barat due to the river revitalization process. Overall, Semarang City has experienced a land subsidence from 0 to 6.753 cm/year.
Development of Parameter Transformation of Indonesian Geospatial Reference System 2013
Authors: Syetiawan Agung , Ramdani Dadan , Nur Safii Ayu , Ardhitasari Yustisi , Gaol Lumban , Annuriah Isnaini
Published: December 2019

DGN95 is a static geospatial reference system, in which the change in the value of coordinates towards time as a result of tectonic plate movement and deformation of the earth’s crust, is not considered. Changes in the value of coordinates towards time need to be considered in defining a geospatial reference system for the territory of Indonesia. This is because the territory of Indonesia is located between several tectonic plates which are very dynamic and active. This area of IndoneFor this reason, SRGI2013 was born, a national coordinate system that was consistent and compatible with the global coordinate system. SRGI considers changes in coordinates based on time functions. Problems arise when the coordinates of the old pillar still use the DGN95 datum reference system. Many published maps or geodetic control network use the old coordinate system, then the mapping user has difficulty getting the conversion of coordinates change aforesaid. The purpose of this study is to produce coordinate transformation parameters to change the coordinates of the old datum (DGN95) into coordinates in the SRGI2013 datum. The results of the transformation parameters resulted are used to change coordinates that are still in the old datum. In addition to making it easier for users to transform coordinates. The coordinate transformation method used uses the 3-dimensional coordinate transformation of the Bursa-Wolf model (7 parameters) and the Affinity model (10 parameters).
Land Subsidence monitoring 2016 - 2018 analysis using GNSS CORS UDIP and DinSAR in Semarang
Authors: Yuwono BD , Awaluddin M , . Najib
Published: December 2019

Land Subsidence is phenomena likey common and occurred due to natural cause, loading, and geological setting. In the coastal area land subsidence became worse, cause influence by sea-level rise, The impact land subsidence can lead to wider expansion (flooding area called rob), damage or cracking construction/building and large of maintenance cost. Semarang is the capital city in Central Jawa have experienced in land subsidence in several decades. The north of Semarang was reported a higher rate of land subsidence compared with the south. It was believed that the land subsidence areas were affected by young alluvium, ground extraction and a load of the building. To anticipate, land subsidence should be monitored and detected in an early stage. The most effective way of monitoring land subsidence using GPS, DInSAR to evaluate the characteristic of land subsidence. The GPS observation was conducted in 2016 – 2018 using CORS UDIP as a base station and Sentinel Data was conducted to analyzed the subsidence rate in Semarang. The result showed land subsidence rate in several areas was distributed both spatially and temporally.
Determination of Vertical Deflection Based on Terestrial Gravity Disturbance Data (A Case Study in Semarang City)
Authors: Sabri L M , Sudarsono Bambang , Dwi Indriana Rina
Published: December 2019

Vertical deflection can be determined by geometrical and physical measurement. In geometrical way, vertical deflection is obtained by comparing astronomical coordinate and geodetical coordinate. In physical way, vertical deflection can be computed from gravity measurement. In the past, vertical deflection was computed from gravity anomaly data. Gravity anomaly data measurement is difficult because it need reduction of gravity from surface of the earth to the geoid using orthometric height from spirit level measurement. In modern era, gravity anomaly data may be replaced by gravity disturbance data whose only required gravity and GNSS (Global Navigation Satellite System) measurement. This research aims to determine vertical deflection in Semarang City from terrestrial gravity disturbance data. The gravity data were measured in March of 2016. Formula of Vening Meinesz that usually used for vertical deflection was replaced by new formula that generated from derivation of function of Hotine. Applying gravity disturbance gave vertical deflection of east-west component that were vary from -1.2” to 12.2” while north-south component were vary from -4.2” to 4.2”. Comparing vertical deflection as computed from terrestrial data to as computed from EGM2008 coefficients showed conformity in shape and values. It was concluded that derivation of function of Hotine could be applied for vertical deflection determination from gravity disturbance.
The Triangulation Reduction Analysis of Acute Triangle
Authors: Janu Amarrohman Fauzi , Sabri L M , Awaluddin Moehammad , Darmo Yuwono Bambang
Published: December 2019

Positioning on the surface of the earth using the triangulation method can be done in two ways, namely terrestrial method for example by measuring the angle and distance using the total station tool and extraterrestrial methods for example by using satellite-based positioning technology. Extraterrestrial positioning method using the global navigation satellite system combined with terrestrial methods by measuring angles and distances using the total station tool is one alternative to positioning well. In this study position determination will only be calculated using two intermediate calculation plane, on the ellipsoid projection and in the plane projection. Of course, in a process of measuring position for the same point but using different methods it will produce different levels of accuracy. From the results of the comparison in determining the definitive coordinate value generated by the count on the ellipsoid projection with the Gauss-Helmert method, the definitive value that is closer to the reference value measured by static measurements methods rather than definitive coordinates produced through calculations in the plane projection.
Ecotourism Site Suitability Using GIS and AHP: A Case Study of Ngargoyoso District in Karanganyar Regency
Authors: Adigana Martein , Sih Setyono Jawoto
Published: December 2019

The purpose of the Karanganyar Regency Regional Tourism Development Master Plan (RIPP) is to implement Sustainable Tourism Development (STD). Of the many concepts that are appropriate for achieving this goal, the concept of ecotourism is one of them. The growth of tourism activities in the Ngargoyoso district has accelerated. Local governments need to have instruments to help achieve STD goals in their areas. Studies related to the selection of suitable areas using GIS (Geographic Information Systems) and AHP (Analytical Hierarchy Process) based on ecotourism activities have been widely studied and applied in various regions of the world. This study aims to identify areas suitable for ecotourism as a basis for decision making for regional tourism development. The research approach is carried out by assessing expert opinion on the basis for determining policy using the AHP method. Then integrated with GIS techniques to be able to present the results of the assessment in the form of a map of the suitability of the location for ecotourism. The suitability classes in this study are divided into S1 (Very Suitable), S2 (Fairly Sufficient), S3 (Slightly Suited), and N (Not Sufficient) for the suitability of general ecotourism and S1 (Very Sufficient), S2 (Partially Sufficient) and N (Not suitable) for special ecotourism suitability. Also, this study conducted a clustering of special ecotourism (locally), namely Hiking, Tubing, and Camping. Cluster analysis is used to get a complete picture of the condition of the region to support making preliminary policy appropriately and quickly.
Spatio-Temporal Visualization of Peatlands Changes
Authors: Kristi Agustina Lea , Aditya Trias
Published: December 2019

Increased deforestation and draining of peatlands with the started of the drainage occurs quickly makes the availability of peatlands as carbon storage is even more alarming. The presence of peat land conversion greatly affect the hydrological balance of the ecosystem. The conversion of peatland have the massive effect with the increase of drainage constructions for land cultivation needs. This makes the neighborhood unity peat hydrology (KHG) which is wet into dry so prone to burning and experiencing land subsidence. Information of peatland degradation is presented in the spatio - temporal visualization using Space Time Cube (STC). The usability in order to determine the extent of the spatio - temporal visualization can be used by users to obtaining information peatland degradation in terms of effectiveness, efficiency and satisfaction for users. Drainage density built on KHG getting bigger every year with the index of medium density classification. Increasing the number of long-drainage occurs at 119.4934 km per year from 2000 to 2008 and 148.6954 km per year from 2008 to 2012. Based on observations in 12 years has increased the number of distribution Hotspot significantly in February. In May and September the spread of hotspots increased by the average number of hotspots at 15 points per month. The drainage development’s and distribution of hotspot has dominant occurs at the HTI in the KHG Peatland degradation is presented in Visualization spatio-temporal, which visualization is very effective, fairly efficient, and give satisfaction to the users in displaying information peatland degradation in time series.
Development of Village Information System Based on UAV Image and Geographic Information System (Case Study: Katonsari Village of Demak Regency)
Authors: Sudarsono Bambang , Sabri L.M.
Published: December 2019

To display comprehensive information, the Village Information System (VIS) does not only display statistical data. VIS that can manipulate data and spatial information is not yet popular. Generally spatial data in the form of maps are only used complementary data rather than arranged in the form of spatial databases. The Village Information System that was built for Katonsari Village of Demak Regency of Central Java Province as a case study area. Spatial data for the system are based on aerial photogrammetry of Unmanned Aerial Vehicle (UAV). Non spatial data are based on sub-district administration book and random sampling survey. Based on the mapping with the UAV, the remaining rice field are only around 50 %, while the remainder is used for residential and factory settlement. The UAV also provides information the land and building tax data made by government is no longer in line with that current conditions. Based on the results of these studies it was concluded that UAVs was efficient, fast and accurate spatial data sources for Village Information System. VIS can provide village potentials in the form of GIS more efficiently and easy to access.
Adaptation and Coastal Management in Disaster Areas (Study in the Coast of Depok Beach, Yogyakarta)
Authors: Utami Westi
Published: December 2019

The coast of the southern coast of Yogyakarta is an area that has a tsunami hazard, tidal waves and abrasion. This study aims to find out how adaptation and land use in the coastal areas of Depok Beach, Special Region of Yogyakarta. The research method is carried out qualitatively, data obtained from image interpretation and field observation. The research was conducted through spatial analysis and presented descriptively. The results of the study show that the pattern of community adaptation is demonstrated through use and utilization by considering aspects of the disaster. The results of the study show that land use on the coast of Depok Beach is in the form of business premises, land for reforestation and land for sand dune preservation. Optimizing coastal management and utilization managed independently by the community is able to increase economic value, create jobs so that people’s welfare increases. The role of the government in regulating the direction of coastal land use and public awareness is able to keep coastal ecosystems sustainable. Mentoring by the government, capital assistance and various trainings for community businesses and cooperatives on Depok coast are able to increase the capacity of communities to manage and utilize coastal areas in a sustainable manner.
Satellite Derived Bathymetry on Shallow Reef Platform: A Preliminary Result from Semak Daun, Seribu Islands, Java Sea, Indonesia
Authors: Meliala L , Wibowo W A , Amalia Jessica
Published: December 2019

Derivation of the bathymetric model from satellite imaging for non-navigable coastal waters has been developed. It is the purpose of this presented paper to assess the depth accuracy of the bathymetric model derived from such optical satellite imagery. The study domain is situated in the Semak Daun reef platform, Java Sea, Indonesia. The area represents shallow sub- and inter-tidal water with various benthic covers. Satellite imagery used here is retrieved from the European Space Agency Sentinel-2 satellite observation system. Two methods in deriving bathymetry from optical imagery are used. The first one is the empirical band ratio transform algorithm and the second one is the analytical approach. Coefficients involved in both models are obtained from means of calibration against sounding data from a single-beam echo-sounding survey. About 9% of sounding data are used for the calibration, while the rests are used to validate the resulting bathymetric models. It is found that both methods can successfully be applied at depth of up to 10 m. The root mean square errors indicated by both models are comparable. Accuracy measures in the order of 1.9 m are obtained with a coefficient of determination of 0.7. The results presented here confirm the applicability of satellite-derived bathymetry for mapping shallow seabed complying to the category zone of confidence C as of the International Hydrographic Organization standard. It should be bear in mind that such an assessment is typical for the environmental condition considered in this study.
Impact Analysis of Tropical Cyclone Cempaka-Dahlia on Wave Heights in Indonesian Waters from Numerical Model and Altimetry Satellite
Authors: Windupranata Wiwin , A.D.S. Nusantara Candida , D. Wijaya Dudy , Prijatna Kosasih
Published: December 2019

Indonesia is located side by side with the Pacific Ocean and the Indian Ocean where there are often tropical cyclones in these two oceans. As was the case some time ago in the Indian Ocean a tropical cyclone of Cempaka and Dahlia occurred which had a significant impact on Indonesian areas. Another impact felt is the disruption of economic activity in the area of tourism, ports, and power plants. Numerical modeling is carried out to simulate the phenomena of Cempaka and Dahlia tropical cyclones to determine the impacts caused especially in Lampung to Lombok areas. Numerical modeling is done using SWAN version 41.20. SWAN was chosen because it has good modeling calculations in coastal areas and is very suitable for wave analysis in coastal areas. The results of the modeling are verified by the significant wave height correlation coefficient from altimetry satellites that cross the tropical cyclones of Cempaka and Dahlia. The results showed a significant increase in wave height in the study area with an increase of up to 1028.31% at the observation point in Pelabuhan Ratu, West Java Province.
Spatial Dynamics Model of Land Availability and Level of Income and Education in Parangtritis Coastal Village, Bantul Regency
Authors: Aulia Arti , . Supriatna , Dwi Mandini Manessa Masita , Ristya Yoanna
Published: December 2019

Parangtritis coastal village is located on the southern coast of Bantul Regency that popular with tourism and capture fisheries activities. The advantages of the tourism and capture fisheries sector make Parangtritis Village seen as a field to earn a living and causes healing in population or people income of Parangtritis Village. This situation can affect the need for space and land, which can have an impact on decreasing the carrying capacity of the environment so that predictions are needed on land availability using a model of spatial dynamics. This study aims to build a model of spatial dynamics for land availability and analyze the relationship among these models with the education level and income of Parangtritis Village. The methods that used in this study is a spatial dynamics modeling method which using population data for 2008-2018 and Google Earth imagery in 2008, 2013, and 2018, and interview with grid area used for the level of education and income. The development of the built area observed through a spatial dynamics model of the relationship between population growth and land availability in the period 2008-2100. The model prediction shows that the developed land has developed from the appropriate area to meet the regional capacity that is not appropriate in 2039. The analysis results showed that the fastest growth of the built-up area was in areas with high levels of education and high-income levels.
Cadastral Surveys with Non-metric Camera Using Uav: A Feasibility Study
Authors: A. Rokhmana Catur , E. Tjahjadi Martinus , D. Agustina Fransisca
Published: December 2019

Orthophoto maps are believed by mapping communities as a favorable media to generate land parcel boundaries for cadaster survey related projects. However, since burgeoning off-the-shelf cameras mounted on the unmanned aerial vehicle (UAV) are commonly utilized for photographing such boundaries, unreliable and unstable intrinsic parameters of these non-metric cameras impede good quality orthophoto productions. This paper presents an alternative method to measure the boundaries reliably without an existence of the orthophoto. A degraded quality of the orthophoto can be circumvented by our newly proposed method so called direct visual referencing. This method comprises two stages. The first step is to perform on the fly camera calibration to minimize instabilities of the intrinsic components of the non-metric camera. Modifying common and widely known flying paths for aerial photogrammetry mission is enabling a block variant self-calibrating bundle adjustments to proceed. The second step is a digitation process. Carefully selected Premark or prominent features along the boundaries are digitized on arbitrary selected images. These features are then matched to the similar ones onto all available images by performing multi photo geometrically constraint least squares image matching. Final results are 3D coordinates from the multi photos triangulation process. These boundaries coordinates are compared against the GPS-RTK measurements on the field. Deviations of these types of coordinates are around 1 cm. It is obvious that this method meets the precision requirement of the GPS-RTK measurements. Therefore we firmly believed that conducting UAV’s cadastral surveys using direct visual referencing is very promising in the near future.
Potential Use of UAV-Based Mapping System to Accelerate the Production of Parcel Boundary Map in Indonesia
Authors: A. Rokhmana Catur , A. Gumeidhidta Imung , E. Tjahjadi Martinus
Published: December 2019

Recently, the Ministry of Agrarian Affairs announces a decree to accelerate a completion of the registration of land parcels of cadaster maps up to a scale of 1:1000. It is known that the use of Unmanned Aerial Vehicle based mapping system (UAV-Map) can produce orthophoto image with spatial resolution less than 10 cm, but it is not yet known whether UAV-Map implementation is able to identify boundary of land parcel in any condition. Therefore, this paper would analyze the planimetric accuracy that is conformed to the regulation of State Minister of Agrarian Affairs/Head of National Land Agency No.3, 1997 both for urban and rural areas. Two testing areas are established which located on urban area and rural area respectively. Flight missions are conducted using a fixed-wing aircraft equipped with a consumer grade camera and a navigational grade GPS-INS system. Orthophoto maps are produced by using Agisoft Photoscan software. Digitizing of parcel boundaries are followed both on an existing map and on the orthophoto maps. Deviations in areas are expressed in terms of the RMSE figures. Planimetric accuracies as indicated by the RMSE value are of 0,044 m for urban areas and 0,122 m for rural area. It is showed that all discrepancies of the parcels area are still below the recommended threshold values of the regulation. It is can be concluded that the orthophoto maps obtained by using a low cost UAV-Map system can be used to identify land parcels boundaries and to determine the parcel area.
Prediction Model of Land Cover Changes using the Cellular Automata – Markov Chain Affected by the BOCIMI Toll Road in Sukabumi Regency
Authors: Audina Irawan Inne , Supriatna S , Manessa MDM , Ristya Y
Published: December 2019

The development of a city is a manifestation of regional development. The impact of the development of a city is the occurrence of land cover changes and increase of the settlement areas. In 2002-2018 the vegetation land cover experienced a drastic decline and experienced land conversion into the settlement areas so that the area of settlement land cover increased. This study aims to analyze the spatial patterns of settlement land cover changes that are affected by the existence of BOCIMI Toll road in the Sukabumi Regency, West Java using the Cellular Automata - Markov Chain (CA-MC) method, and modeling for 2032 based on the driving factor (driving factor) applied to the model. CAMC is a simple model of a spatially distributed process in a Geographic Information System (GIS). Five variables used as driving factors, elevation, slope, distance from the river, distance from the road, distance from the toll gates and distance from the toll road. The results of the model show that there are some changes in land cover and an increase of the settlement area that is affected by the physical and infrastructure factors in Sukabumi Regency, it can be seen that the kappa value is 0.8352 or 83.52%. Further, it is necessary to analyze the Sukabumi Regency model and the Regional Spatial Plan (RTRW) to see the growth and direction of the settlement area in Sukabumi Regency.
Land Use Change Detection and Urban Sprawl Monitoring in Metropolitan Area of Jakarta (Jabodetabek) from 2001 to 2015
Authors: Fata Robbany Ismail , Gharghi Arash , Traub Karl-Peter
Published: December 2019

Being 13th largest city in the world makes Jakarta as a fascinating city in South East Asia. Its surrounding regions are included in a particular metropolitan area called “Jabodetabek”. Population growth in this metropolitan area about 10 million only in 15 years from 2000 to 2015. Consequently, loss of vegetation and agricultural land, less water resources, increasing demand for housing and transportation infrastructure as the effect of this ever-growing population take place. This phenomenon can be detected using Landsat satellites images. The settlement or urban area in Jabodetabek shows a huge increase in percentage from 2001 to 2015, so much that the urban area is the dominant land cover and reaches up to 61 percent of Jabodetabek in year 2015. Moreover settlement density in Jabodetabek (ring zones 25 to 45 km from central city) shows an increase of more than 20% urban areas in year 2015. Furthermore, the result of compactness reveals that this urban expansion in Jabodetabek was spread out from 2001 to 2008 and became more compacted by 2015.
Variables Affecting ZNT Implementation in Communities Semarang City
Authors: Wardina Galuh , Rudiarto Iwan
Published: December 2019

The Land and Building Tax Imposition Base (NJOP) is used to determine the basis for Land and Building Taxes. But in reality, NJOP sometimes does not match fair market values. By land valuation experts, a method was formed which approached real land prices, namely the Land Value Zone (ZNT). ZNT in its application and development raises diverse responses. For that, we need to study variables affecting the implementation of ZNT in the community. Therefore, the city of Semarang is considered suitable for case studies on the implementation of ZNT because it is the center of economic activity in Central Java Province. This research is expected to provide benefits regarding the implementation of ZNT as a method to determine the amount of NJOP. The level of acceptance of ZNT implementation in society is measured by 10 variables. The data in this study were obtained using a questionnaire sampling to community. Questionnaire results are then analyzed so as to help further explain statistical results that have been obtained. Facts on the ground show that the people of Semarang City feel the ease and accuracy as well as the fair transparency of market prices for land in ZNT. The analysis results that have been found, there are 3 variables that most influence, namely politics, communication with the parties concerned, and socialization of ZNT. Those improvements are needed on the internal and external factors of the ZNT method and coordination, communication and cooperation between the government and the community.
Object Oriented Land Use Change Modelling Of Residential Areas (Case Study : Banyumanik Sub-District, Semarang City)
Authors: Suprayogi Andri , Subiyanto Sawitri
Published: December 2019

Land Use change marked by the shift of land usage to another. Banyumanik Sub-district is an administrative areas in southern part of Semarang City with higher elevation compared to City Center. The increase of tidal flood caused changes the land use of Banyumanik to residential. In this study we try to model the land use change of Banyumanik using Land Use and Land Cover Changes (LULCC) Packages in R. Using land use of 2011, 2013, and 2016 as input, elevation, slope, and distance to road as parameters, and population data for growth analysis. This study consists of firstly, study area extraction from input and rasterization. Secondly change probability model creation and comparation of population changes to residential changes, Lastly, obtaining actual change and the probability models in the form of maps and charts that describes the land use change in the future as probability model. The land use change to residential does not cope the population growth, and resulting a higher population density. We also found a temporal pattern of residential occurance over residential probability, where occurance slightly decreases as the probability rises, but jumps for the highest probability. Between 2011 and 2013, from area of 0.126km2to 0.165km2. And between 2013 to 2016, it also shift from 0.177km2 to 0.286km2. It can be concluded that a general increment also took place to the existing pattern.
The Impact of Visit Frequency on Kreo Cave Tourism Development
Authors: Bashit N , Subiyanto S , Prasetyo Y , Sukmono A , Br Sitepu S A
Published: December 2019

Kreo Cave is one of the tourist destinations in Semarang City in the form of nature reserve tours. Kreo Cave provides opportunities for the community to improve economic, social and cultural welfare. The existence of Kreo Cave and its tourism development has a very positive potential for various parties such as the government, the community, tourists so that Kreo Cave has the value of tourism potential that can support the development of Semarang City. Visitors to Kreo Cave experience an increase every year so that it can be said that tourism objects have developed. Therefore, this study conducts an economic assessment of the area of Kreo Cave which has undergone development. Based on these, the frequency of tourist visits can be analyzed to determine the direction of development of attractions. Tourism development can be seen using the Travel Cost Method (TCM) and Contingent Valuation Method (CVM) to determine the WTP (Willingness to Pay) value to see the development of Total Economic Value (TEV) tourism from Kreo Cave. This research produce total economic value (TEV) from the Kreo Cave of Rp. 463,392,708,190, - in 2015, Rp. 373,242,613,540, - in 2016 and Rp. 552,610,924,100 in 2017. These results indicate an increase in the value of TEV in Kreo Cave between 2015 and 2017.
Evaluation of GPS-RTK and Total Station for Topographic Survey and Strategic Decision in Private Companies
Authors: Idris Mohammad
Published: December 2019

An accurate and efficient survey system is needed for survey based private companies to survive in the business and engineering world. Accuracies of GPS-RTK (Global Positioning System-Real Time Kinematic) system and TS (Total Station) were investigated in a topographic survey. The hypothesis proposed was that GPS-RTK system could be an alternative survey for moderate accuracy projects. 5.90 ha salt ponds area became a sample for the research. Full detailed measurement was conducted by both instruments to build a contour map. Time expenditure was recorded to identify each method of effectiveness. Maximum offset of elevation was 0.054 m (polygon) and 0.098 m (detail). The survey results demonstrated that even though GPS-RTK system was not only practical and efficient (time saving reached 30% verses TS and 33% more efficient in human resources) but also yielded acceptable accurate topographic maps for moderate accuracy engineering purposes, GPS-RTK system cannot be conducted for every terrain feature.
Geometric Accuracy Assessments of Orthophoto Production from UAV Aerial Images
Authors: S Sai Silvester , Tjahjadi Martinus E , A Rokhmana Catur
Published: December 2019

Orthophoto mosaic is assembled from aerial perspective images through a process called orthorectification, which eliminate photographic tilts and terrain relief effects. These orthorectified images have been resampled from the original ones that may have been prepared from a DTM which does not accurately model the surface. Meanwhile, some proprietary software such as Agisoft utilizes spatially dense 3D point clouds that are generated from a so called Structure from Motion technique to generate the orthophoto. The software provides a black-box method to regard these clouds as DSM, and it utilizes this surface model to project pixels from the original images. This paper investigates geometric accuracy of the produced orthophoto mosaic according to the American Society of Photogrammetry and Remote Sensing (ASPRS) standards. To minimize scale differences among images, a 35mm fixed-lens camera is mounted on a fixed-wing UAV platform. Flight missions are carried out at around 250m flying height controlled by a navigational grade sensor on board to provide spatial resolution of about 27mm. A number of orthophoto mosaics are produced by varying numbers of GCPs, flight paths configuration and terrain relief differences. The geometric accuracies are assessed through a provision of ICPs on each test field area. Coordinates deviations between the ICP and the corresponding orthophotos are framed into a RMSE figures. Within a 95% confidence level, it is revealed that a suitable orthophoto map scale is up to around 1:500. It is recommended that a cross flight configuration to achieve better results.
Assessing Stability Performance of Non-Metric Camera’s Lens Distortion Model during UAV Flight Missions
Authors: E Tjahjadi Martinus , D Agustina Fransisca , A Rokhmana Catur
Published: December 2019

The process and definition of camera calibration have change greatly over recent years. Aerial metric cameras calibration, for which laboratory and field calibration procedures were a separate process, was performed before and independent of any actual mapping data collection using precise calibration fixtures with an assumption that the camera parameters determined would remain valid for a significant period. In contrast, non-metric cameras are characterized by unstable intrinsic parameters over the times and they are vulnerable to the engine and other vibrations during flight data acquisitions. Moreover, there is no standard calibration procedures exist for these cameras. But, since non-metric camera self-calibration augments the concept of calibration as a part of the measurement process, it can determine the camera intrinsic parameters at the time of the data acquisition as long as highly-convergent geometry and the use of multiple exposures are employed. Therefore, this paper investigates variations of the lens distortion components with object distance within the photographic field by using the self-calibration method. The use of redundant flight paths and tilted camera is also incorporated to ascertain the stability of the principal distance and the principal points during the flight mission. During the experiments, a series of flight mission is conducted to photograph test field areas from over a relatively flat area to highly mountainous one. It is revealed that the radial, decentering, and affinity distortion parameters are more stable than that of the principal distance and principal points against vibrations.
Comparison of Destriping Methods of GRACE Satellite for Total Water Storage Calculation in Peatland Borneo Island
Authors: Fauzi Rendra , Sophia Heliani Leni
Published: December 2019

GRACE satellites frequently used to calculate total water storage in terrestrial areas, including peatland. Total water storage (TWS) needed to monitor Peatland fires risk. However, processing methods need to be considered carefully. This study intends to find out the best destriping method for estimating total water storage. This study compared data from the CSR model with a maximum degree of 96, from 2002 to 2017, located in Borneo Island. The destriping method compared namely Chen P3M6, Chen P5M8, Chambers 2007, Chambers 2012, Duan, and Swenson. This study used GRAMAT toolbox developed [1]. Results shows of the 6 methods that compared, 3 unique values are produced. Chen P5M8 and Swenson method produced the same value. Chambers 2007, Chambers 2012, and Duan method also produced the same value. Only Chen P3M6 produce different results without similarities. The correlation matrix between methods shows value close to 1, means there is no significant difference between methods. This study concluded that the type of destriping method for TWS calculation in peatland aren’t significantly affecting the result.
Integration of Leaf Water Content Index (LWCI) and Enhanced Vegetation Index (EVI) for Stress Detection of Rice Plant Using Landsat 8 Satellitte Imagery
Authors: Sukmono Abdi , Laila Nugraha Arief , Sugistu Firdaus Hana
Published: December 2019

Rice is the main staple food for Indonesian society. Almost 95% of Indonesians consume rice. Along with the increasing population in Indonesia, the level of rice consumption each year has increased. But on the other hand, the amount of paddy fields has decreased due to the development of settlements and industry. Consequently, the business of fulfilling rice consumption needs should prioritize agricultural intensification method. This agricultural intensification program requires good supporting data. One of the supporting data required is a plant health condition that can be represented in data on rice stress levels. Monitoring the stress level of rice plants can be done using remote sensing methods based on satellite imagery. One of them is Landsat-8 satellite imagery with certain algorithm. In this research, a modification algorithm of Rice Paddy Stress Index (RPSI) was obtained by integrating Leaf Water Canopy Index (LWCI) and Enhanced Vegetation Index (EVI). LWCI is used as a representation of water content in vegetation and EVI is used as a representation of the greenish level of plants associated with chlorophyll content. Plants that experience a decrease in health will decrease the content of chlorophyll and water. The results of this study indicate that in 2015 planting season 2 in Kendal Regency there are 1696.26 ha of rice fields indicated experiencing stress and 3493.85 Ha of rice fields have a potential stress. The result of validation test shows that RPSI algorithm method has 75% accuracy for determining rice stress level.
Analysis of Road Network Growth Patterns As Supporting System of Industrial Park Accessibility
Authors: Prasetyo Yudo , Bashit Nurhadi , Nur Krisnha Dicky
Published: December 2019

Development growth around the industrial area has increased from year to year to meet the ideal industry criteria ranging from environmental, economic, physical and other aspects. Physical development affects accessibility so that it accelerates production and distribution by increasing the road network. Road network monitoring needs to be carried out to see its effect on the accessibility of industrial park. Therefore, this study analyzes the growth pattern of the road network as a support system for industrial area accessibility. This research was carried out in the Kendal Industrial Park in Kaliwungu, South Kaliwungu, and Brangsong Regencies. The research method uses the Remote Sensing method and Geographic Information System (GIS). Satellite imagery was digitalized on Worldview-2 (0.5 Meter) and SPOT-7 (1.5 Meter) satellite images with multitemporal 2010 and 2019. The digitization results were calculated on the total length of roads from 2010 to 2019. Road growth patterns were analyzed using spatial statistical analysis shown by Ellipse’s Standard Deviation. The growth of road net growth in Kendal Industrial Park from 2010 to 2019 is 45,645.392 meters or 45.645 kilometers. Road growth in the 3 sub-districts in the study area is heading north where in the north there is the Kendal Industrial Park which has a lot of road construction to support access to the Kendal Industrial Park or to other areas that are more effective and efficient.
Analysis of Total Plate Count, Yeast and Mould Count, Salmonella sp, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Shigella spp. on Traditional Medicines
Authors: Gilang Pratama Anas , Elenora Kristanty Ruth , Maximus Tulandi Silvester
Published: December 2019

Anas Gilang Pratama, “Analysis of Total Plate Count, Yeast, and Mould Count, Salmonella spp., Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Shigella spp. on Traditional Medicines” under the guidance of Silvester Maximus Tulandi, S.Farm., M.Sc., and Ruth Elenora Kristanty, M.Farm., Apt., 2019. Traditional medicines can be contaminated by bacteria starting from the raw material process, during production, and at the time of storage. The analysis of total plate count, yeast, and mould count on traditional medicines was done at the Microbiology Laboratory of National Agency of Drug and Food Control in Jakarta by using five types of bacteria. This work was based on microbiological test parameters on traditional medicines through several stages: homogenization, enrichment, isolation, and biochemical tests. Based on the results, the samples fulfilled the requirements on Analysis of Total Plate Count, Yeast, and Mould Count, Salmonella sp, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Shigella spp. according to the Regulation of the Head of the National Agency of Drug and Food Control No.12/2014.
The Effectiveness of Nutrition Education about Local Specific Food-based Balanced Nutrition Recommendation on Dietary Intake Level and Anemia Status in Female Adolescents at the Hidayatullah Arrohmah Islamic Boarding School Malang
Authors: Mustafa Annasari , Rizky Maulidiana Annisa
Published: December 2019

Background: Anemia is the biggest nutritional problem in Indonesian adolescents. One of the main risk factors is poor diet. Nutrition education as an intervention method has been shown to significantly improve healthy lifestyle and academic achievement in school-aged children. Objective: To analyze the effectiveness of nutrition education about local specific food-based balanced nutrition recommendation on the knowledge, dietary intake level, and anemia status of female adolescents. Methods: This study was a quasi-experimental research with pre- and post-test design. Eighty-three female students of the Hidayatullah Arrohmah Islamic Boarding School Malang were included as study participants. The nutrition education in the form of class counseling on balanced nutrition guidelines and healthy snacks was given for five consecutive months. Dietary consumption, knowledge, and hemoglobin level were measured before and after the intervention. Data analysis was done using paired t-test and Wilcoxon signed-rank test with p<0.05 considered as significant. Results: There was a significant difference of the protein (p=0.029) and Fe (p=0.021) intake level before and after the intervention, however, this result was not found in the vitamin C and folic acid intake. The nutritional knowledge as well as the hemoglobin level were increased significantly (p=0.001, p=0.04, respectively). Conclusions: Nutrition education about local specific food-based balanced nutrition recommendation is very effective to increase knowledge, dietary intake (protein and iron), and hemoglobin levels in female adolescents.
The Effectiveness of Educative, Supportive, and Administrative Cycle (ESA-C) Clinical Supervision Model in Improving the Performance of Public Hospital Nurses
Authors: Setiawan Asep , Anna Keliat Budi , Rustina Yeni , Prasetyo Sabarinah
Published: December 2019

Consistent supervision affects nurse performance, but in its implementation in nursing care in Indonesia, supervision tends to be more monitoring in nature and lacking the efforts of educating, motivating, training, and directing. The clinical supervision model of Educative, Supportive, and Administrative Cycle (ESA-C) is made to increase the positive value of supervision. The model is synthesized from Kadushin’s and Proctor’ supervision models integrated with Peplau’s interpersonal relationship theory and Watson’s carative factors. The research aims to test the effectiveness of ESA-C clinical supervision model in improving nurse performance using the quasi-experimental design of two group pre-post-tests. Two hospitals were randomly selected from the five public hospitals as the research location. The sample consisted of 90 nurses and 270 patients, taken randomly and purposively, respectively. The results indicate that the ESA-C clinical supervision model was able to significantly improve the nurses’ performance (p-value < 0.05) in the dimensions of task performance: technical skills improved by 2%, patient education 9%, emotional support to patients 14%; and contextual performance: assistance to patients and families improved by 21%. It is recommended that the model be used in nursing care, especially in hospitals, in an attempt of improving nurse performance in providing nursing care to patients.