bluuebunny/crossref_metadata_2025 huggingface dataset:
Potential groundwater recharge zone in the groundwater basin of Majalengka Regency
Authors: Nasution A H , Kusratmoko E , Rustanto A
Published: September 2020

Water is an important natural resource in supporting the lives of all living things. The increasing population in Majalengka District adding a large amount of water usage. The extraction of groundwater that has been carried out over time has also increased, thus, a study is needed to reveal groundwater recharge zone so that we can predict the groundwater reserves in a certain area. Therefore, a study entitled Potential Groundwater Recharge Zone in CAT Majalengka needs to be conducted because CAT is a location where rainwater falls and can also be used as data to estimate the groundwater reserves in a certain area. The method used in this study was SMCE (Spatial Multi-Criteria Evaluation) by using a quality point system on each variable used. The variables used in this study were lithology, rainfall, slope, altitude, land use, soil texture, and flow density. The results of this study showed that the potential groundwater recharge zones in CAT Majalengka were dominated by high and very high classifications. High and very high classification potential dominated at an altitude of 500-1000 meter above sea level.
Changes in the west Delta of Ci Manuk in 2002 - 2018
Authors: Pamungkas F D , Saraswati R
Published: September 2020

Ci Manuk Flow Area is one of the river basins in Java Island. The Ci Manuk Delta changed from 1963 to 2002. Changes that occurred in the Ci Manuk delta were moved by extensive accretion. The reason for choosing Ci Manuk Delta is because the Ci Manuk flow has a high sedimentation rate compared to other flow areas, besides that, Sumedang Regency has built a dam to hold the sediment flow and repair floods. How this is done as a problem and research can be done to determine the delta-forming factors and changes in the delta region that occurred temporally from 2002 to 2018 after the dam was built. The method used in this research is spatial analysis and quantitative descriptive analysis. Spatial analysis is used to describe the spatial change in the temporary area and quantitative descriptive analysis is used to explain the results of the calculation of changes in delta area. The results of this study are the dynamics of delta changes that occur in the west are dominated by the addition of delta (accretion) with an area of 522.3 ha and undergo a change in shape from cuspate to birdfoot. The factors that support the addition of the area comes from internal factors, namely the high value of sediment and the low external factors originating from the marin.
Loss levels regarding flood affected areas in the upper Citarum Watershed
Authors: Fernandos  , Tambunan M P , Marko K
Published: September 2020

The Upper Citarum Watershed is an area that replaces the annual flood. The annual flooding experienced by the Upper Citarum watershed is influenced by several factors, such as changes in land use. From these annual flood events, there will be a level of loss experienced by communities affected by floods. Floods that occur in the Upper Citarum watershed can be seen from the results of the visual model of the upstream Citarum watershed, so that the information can be obtained on the areas affected by flooding and large floods from each affected areas. The purpose of this study is to determine losses due to flooding obtained from flood risk level data, which is the result of an overlay of the level of flood hazard and flood vulnerability. The level of flood hazard can be obtained from the processing of the digitized flood model and field survey. While the rate of flood returns is obtained from the processing of land use data which is the economic value of each land use. This research resulted in a level of flood risk which is dominated by a moderate level of flood risk of 44.15%, then the high-risk level is 42.25%, and the low flood risk level is 13.6%. The extent of the flood risk level is then converted to the economic value of each land use, to get the value of the loss rate. Determination the level of loss, in addition to taking into account the level of the parameters of flood risk, the extent of each region level of risk also influences the determination of the level of flood losses in the Upper Citarum Watershed. This research is carried out as an effort to develop disaster mitigation in the annual flood prone area tobe used as a reference in the development planning process.
Water quality in Ci Lutung Watershed (Case study: Ci Jurey Sub-Watershed and Ci Deres Sub-Watershed)
Authors: Nabila S , Kusratmoko E , Marko K
Published: September 2020

Natural waters such as rivers are environmental components that need to be considered especially regarding the quality of river water. River water quality can decrease because landuse change as a form of increasing human activity. The purpose of this study is to assess the river water quality of the Ci Lutung Watershed, specifically the Ci Jurey-Sub-Watershed and Ci Deres Sub-Watershed. To assess the quality of the water, a water sample is taken directly from the specified river body. The water quality parameters tested consisted of TDS, pH, conductivity, and turbidity as physical parameters, and nitrate, phosphate, sulfate and chloride as chemical parameters. This water quality assessment is carried out using the STORET method, which is comparing the results of parameter tests with Class III Water Quality Standards as determined by Indonesian Government Regulation No. 82/2001. This research also identified the relationship between landuse and lithology as a watershed characteristic with the river water quality. To be concluded, the water quality of the Jurey River and the Deres River is categorized as light polluted according to the STORET calculation. Also, the water quality in both rivers are spatially influenced by each watershed’s characteristic. TDS value is calculated high because its lithology –age of oligocene Tertiary rocks, and nitrate value is calculated high because it is influenced by agricultural activities.
Spatial-temporal analysis of changes in land-cover and land surface temperature (LST) within Universiti Putra Malaysia campus area
Authors: Shidiq I P A , Ismail M H , Supriatna S , Wibowo A
Published: September 2020

The urban forest is one of the typical vegetation-covered space in an urban area. The existence and development of the urban forest commonly found within the university campus site. The ecological and environmental characteristics in a university campus site usually resemble and similar to the urban area. The physical environment of the campus area is gradually changing due to development and improvement purposes, and it is impacting the land-cover on the surface. Changing the physical element of the surface will affect the absorption of the sun radiation, and further, it is changing the dynamic of the micro-climatic condition or temperature within the surrounding area. The primary focus of the research is to observe the impact of land-cover change on the land surface temperature (LST) within the campus area. Universiti Putra Malaysia is one of the largest campuses located in the urban area of Serdang district, state of Selangor. The dynamic changes in this site observed through multi-temporal Landsat 8 OLI-TIRS level 1 imageries. Datasets from 2013 to 2015 were collected to employ spatial-temporal analysis on land-cover changes, as well as the LST algorithm to monitor the surface temperature. The result shows that there was an increasing surface temperature during 2013-2015, the maximum LST in September 2015 was found at 32.17 °C, it is higher than the maximum LST in September 2013 (28.84 °C). The result shows that there was an increasing surface temperature during 2013-2015, which corresponds with the inclining built-up area. The research concluded that changes in land-cover would affect the spatial-temporal land surface temperature at University Putra Malaysia.
Study of atmosphere dynamics in the event of very heavy rain causing flood in Supadio International Airport Pontianak using WRF-ARW Model and Himawari-8 Satellite Imagery (Case study: November 11, 2017)
Authors: Ayasha N , Ryan M , Fadlan A
Published: September 2020

On November 11, 2017, extreme weather in the form of very heavy rain has occurred in Pontianak. Based on surface observations data from Supadio Meteorological Station, the amount of rainfall reached 187.4 mm / day and caused flooding in several areas in Pontianak. As a result, a number of flights were cancelled on November 12, 2017 due to flooding in the airport runway. This study aims to examine the causes of very heavy rain using the WRF-ARW model and the results of Himawari-8 satellite images which are processed using Python Programming. Based on the output of the WRF-ARW model with the resolution 3 km, it shows some weather parameters that have potential for bad weather in Pontianak, namely the existence of shear line in West Kalimantan and the eddy circulation in this region which can trigger convective cloud accumulation in Pontianak, the wet RH in the 850-500 mb layer ranges from 70-90%, the CAPE ranges from 1000-2000 J/kg, and the air pressure decreases between 03.00 UTC until 06.00 UTC with a 1.7 mb tendency. In addition, the results of the Himawari-8 Satellite Image show that the cloud peak temperature is very low at -75.8°C at 08.33 UTC. Therefore, based on the WRF-ARW and Himawari-8 Satellite results, those support the occurrence of very heavy rain in Pontianak.
Exploring the relationship of solid waste height and land surface temperature in municipality landfill site using Unmanned Aerial Vehicle (UAV) images
Authors: Hernina R , Rokhmatuloh  , Setyawan B A
Published: September 2020

Increasing solid waste volume from human activities makes solid waste stockpiles grows higher in municipal landfill site. This phenomenon has potential risk especially in form of increasing land surface temperature (LST) when compared to surrounding environment. However, detailed survey of LST in solid waste piles using conventional tools might be time-consuming. Therefore, this study offers alternative of elevation and LST measurement in waste piles using combined images from unmanned aerial vehicle (UAV) and Landsat 8. Herein, DJI Phantom 4 Pro was flown in a waste stockpile located in Cipayung landfill site, Depok Municipality, Indonesia. Digital Surface Model (DSM) was acquired from UAV images processing. LST prediction is processed from Landsat 8 thermal infrared sensors (TIRS) band 10. Resampling technique was employed to match spatial resolution between DSM and LST. Both solid waste elevation and LST were paired statistically using Pearson correlation coefficient to observe linear relationship between them. Results show that waste elevation and LST have positive correlation.
Estimation of soil erosion by USLE model using GIS technique (A case study of upper Citarum Watershed)
Authors: Khairunnisa F , Tambunan M P , Marko K
Published: September 2020

Citarum Watershed is categorized as a critical watershed due to erosion and environmental damage. Erosion is a continuing long-term problem because of its impact to the economic use and environment. The purpose of this study is to determine the distribution of annual soil erosion by USLE model using Geographic Information System (GIS). The four major input parameters affecting to soil erosion are rainfall erosivity factor (R), length slope factor (LS), soil erodibility factor (K), and land use factor (CP). The result showed that the average annual soil erosion was 122,76 ton/ha/year. The erosion hazard categorized into four classes which are low, moderate, high and very high. The low level of erosion is <15 ton/ha/year has about 2,47% area of low level and located in the north of Upper Citarum Watershed. The moderate level of erosion is 15 - 60 ton/ha/year has about 11,13% area of moderate level and located in the north, east, southeast and south of Upper Citarum Watershed. The high level of erosion is 61 - 180 ton/ha/year has about 78,53% of high level which dominates Upper Citarum Watershed. The very high level of erosion is >180 ton/ha/year has about 7,87% of very high level and located in south and southwest of Upper Citarum Watershed. The result can be used as a consideration for soil erosion prevention measures by local people and government to reduce soil loss.
Spatial modeling of landscape and land cover pattern in Semarang City
Authors: Sugiyo K , Supriatna S , Risnarto  , Afdhalia F
Published: September 2020

Semarang City is one of the largest cities in Indonesia. Tidal flooding, flash floods, sea water intrusion at the coast and landslide at the hills, are the issues the city currently dealt with as a side effect of land conversion. This study aims to analyze the landscape and land cover pattern of Semarang City in 1996, 2003, 2016 by using the landscape indices and generate spatial models of the landscape and land cover pattern of Semarang City. Landsat images from 1996, 2003 and 2016 and eight landscape indices (PD, PLAND, LPI, LSI, MNN, IJI, SHDI, and SHEI) were used to analyze landscape/land cover pattern and its change. Binary Logistic Regression and geography information system were used to build a mathematical and spatial modelling of landscape/land cover change using driving factors such as altitude, slope, land subsidence, population density, land ownership, land price, street density, drainage density, and distance from city center. Landscape indices shows that the highest land utilization (higher PD, LSI, MNN, IJI, SHDI, SHEI and lower LPI) mostly occurred at altitude 25-100 MASL (meters above sea level) in 1996 and 2003; in 2016, it occurred at altitude 100-500 MASL. In the period of 1996-2003, land fragmentation with high mixing and diversity occurred at altitude 25-100 MASL, while in the period 2003-2016, it occurred at altitude 100-500 MASL. Spatial modeling of landscape/land cover in Semarang City is best applied at altitude 100-500 MASL. The probability of landscape/land cover change is high when located at the high and flat areas, relatively high river and road density, highest population density, and lowest land price.
Identification of misconceptions in geography using the three-tier diagnostic test
Authors: Desfandi M , Abdi A W , Gadeng A N , Sofia I
Published: September 2020

Misconceptions can occur in all subjects, including in geography. Three-tier diagnostic test is an instrument that cannot only be used to determine the level of understanding of concepts, but also can identify misconceptions in geography on earth dynamics subject matter by using three-tier diagnostic test. The study uses a quantitative approach, with data analysis technique, with data analysis technique use descriptive statistic. The study was conducted in Madrasah Aliyah Negeri Model (Islamic Senior High School) Banda Aceh with the subject of study were 70 students of Social Sciences Class. Data collection is done through three-tier diagnostic test that has been tested for validity and reliability. The results showed that 30.5% of students did not understand the concept, 26.5% of students have misconception, and 5% of students give wrong answer. Based on study finding, it is suggested to the teacher to be able to prepare well the learning particularly on earth dynamics subject matter, such as by implementing learning methods that are suitable with characteristics of learning subject and by using learning media so that students’ understanding of concepts increases.
Forest management in Malaysia: The strategies undertaken towards achieving Sustainable Development Goals
Authors: Moktshim N
Published: September 2020

The forests of Malaysia have been systematically managed with the establishment of the Forestry Department in 1901, whereby ecologically and environmentally sound forest conservation and management practices have been developed to ensure forest renewal and sustained yield. The evolution of forest management studies was documented with the chronological of attempts by Malaysia toward achieving the aim to become a developed country. Forest resources development is one of the terms used in forest development planning and forest development resource. Similarly, it always involves the effects and impact toward the surroundings, especially regarding human life. The objective of this studies is to identify forest management strategies undertaken by Malaysia. This research come out with the two questions namely what are the strategies of forest management efforts in Malaysia? and what are the trends of forest policy in Malaysia? Economic development is more stressed on the circle of life. Malaysia’s development progression shows clear evidences that the country had positioned itself toward achieving and realising to become a developed and industrialised nation by the year 2020. However, the last decade or so showed that Malaysia continues to be threatened by increasing diversities, frequencies, and intensities of forest degradation, and their threat on human quality of life issues. The strategies for forest and implementation have been gradually implemented at the national level, and lately at the regional and global scales. Forestry Department in Malaysia also involved in REDD+ strategies to determine the level and extent of national level mitigation actions to be taken, ensures at least 50% of national land mass is forested and intact, ensures water supply for both domestic and industrial use, ensures soil fertility for crop production and for community adaptation to climate change. The results were also clear in showing the forest degradation issues trend changes through time. The approach of forest management efforts is parallel with forest degradation issues for each phase of development.
The earthquake hazard level of Makassar
Authors: Ramadhan B R , Damayanti A , Dimyati M
Published: September 2020

An earthquake is a natural disaster that is often found in Indonesia because its geological area is a meeting between three large tectonic plates. Earthquakes have a high level of danger due to unpredictable events. In the Sulawesi region, especially Makassar, in 2017, there was an earthquake measuring 3 SR-6 SR, with a shallow epicenter. Epicenter distance calculation is used to determine the value of peak ground acceleration (PGA), which can then affect the intensity value in the hypocenter. This study aims to analyze the level of earthquake hazard using the PGA value as the basis for the initial reference of earthquake disaster mitigation. Variables used include rock type (geology), slope and the value of peak ground acceleration (PGA). Data on rock types were obtained from the Makassar City BPBD, and slope variables were processed from the SRTM DEM. Next, an overlay analysis was conducted to determine the level of earthquake hazard using a GIS application. The results showed that Makassar City had a majority of 94% of its area has a low level of earthquake hazard, while 6% of the area that had an earthquake hazard level was quite high in the east of Makassar. The frequency of earthquakes that were felt to be influential by the community (scale III MMI) was only two times in the last three decades (1996 and 2018).
Social vulnerability to earthquake hazard at Pringsewu District, Lampung Province
Authors: Lestari D A , Sakti B
Published: September 2020

Earthquakes are still a major issue in Indonesia, one of the earthquake-prone areas is Lampung Province. There are many sources of earthquakes in Lampung, due to the influenced by the Indo Australian Plate against the Eurasian Plate, Semangko Fault, and Tarahan Fault. Tarahan Fault that passes through Pringsewu district and Bandar Lampung City is an active fault where the west side of the fault force moves to the northeast. Judging from the occurrence of the earthquake so far, it should be taken into account the possibility that there is a large buildup of energy in the Lampung area, one of them in Pringsewu. One of the efforts in earthquake disaster mitigation is to know the level of vulnerability, in this study based on its social aspects. This social vulnerability can be known through social vulnerability analysis or Social Vulnerability Index (SOVI). This analysis uses a comparative matrix that gives a broad picture of social vulnerability relative to earthquake hazards. The results showed that the regions with very high social vulnerability were in Gading Rejo Subdistrict while the low social vulnerability was in Ambarawa, Banyumas and Adiluwih Subdistricts.
Earthquake hazard model with AVS30 in Sukabumi, West Java Province
Authors: Amri M R , Nurlambang T , Supriyatna  , Anggrahita H
Published: September 2020

The potential surface shocks due to the earthquake in Sukabumi is quite high. The purpose of this study is to provide an overview of the potential distribution of earthquake hazards on the earth’s surface. The methodology used for the potential earthquake hazard is the Peak Ground Acceleration (PGA) approach which is corrected by AVS30 analysis. The final results of the study can provide an overview of the potential of earthquake surface shocks grouped into three categories, namely low, medium, and high hazards. The variables used in this study were four types, namely: subsurface earthquake potential, slope shape, slope texture, and slope gradient. The study results of the potential for earthquake shocks can provide information on the potential hazards of earthquakes on the largest land surface in the Sukabumi City area and around the Cimandiri fault.
Application GIS (Geographic Information System) for multi-hazard mapping in Cisolok Village, Indonesia
Authors: Ristya Y , Supriatna  , Afdhalia F
Published: September 2020

Flood, landslide, and Tsunami was a disaster that has highest casualties in Indonesia. Based on BNPB’s data on 2019 flood, landslide, and tsunami cause more than 1000 people died or gone. Cisolok Village is one of many areas in Indonesia that has a potential hazard of that three disasters. Cisolok Village has flat and mountainous land-form from zero until more than 25%. slope gradient. There are two rivers that stream on Cisolok Village’s west and east side. Moreover, Cisolok Village has a beach with cliff type. That’s physical characteristic of Cisolok Village can cause the settlement become a prone area. This research is aim to do multi hazard mapping and also to know distribution of flood, landslide, and tsunami hazard and prone areas in Cisolok village. Variable of hazard in this research are slope, distance from river, landform, and altitude. While the prone’s variable is location of settlement in Cisolok Village. Overlay Method was used to create hazard map and prone map. Spatial analysis was implemented to describe the distribution of flood, landslide, and tsunami hazard and prone areas in Cisolok village. The result show that there are areas with high flood, landslide, and tsunami hazard potential in Cisolok Village. High and very high landslide hazard potential area has the largest area (26.6 Ha) than the others. While, Tsunami prone area with high class has the largest areas (8.10 Ha) than the others. Southeast side of Cisolok Village is the prone area with high class in flood, landslide, and tsunami hazard.
Study of total suspended solid concentration based on Doxaran algorithm using Landsat 8 image in coastal water between Bodri River estuary up to east flood canal Semarang City
Authors: Sanjoto T B , Elwafa A H , Tjahjono H , Sidiq W A B N
Published: September 2020

The water quality in the northern coastal waters estuary of Central Java has been polluted at a moderate to severe level. Water quality monitoring efforts for evaluating the condition of dissolved sedimentation can be done through total suspended solid methods by analising the remote sensing imagery. Total suspended solid (TSS) is measured by suspended material (diameter> 1 µm) which retained in the millopore filter with a 0.45 µm pore diameter. The purpose of this research is to assess the distribution of TSS concentrations in the research location. This study was conducted using Landsat 8 image data on August 9th, 2018. TSS concentration values were obtained through linear regression tests Doxaran algorithm which is the most suitable algorithm with the field condition. The results showed that: 1) The appropriate empirical algorithm for mapping TSS concentrations is the Doxaran algorithm with the TSS equation = 1.0248x - 10.503, 2) Distribution of TSS with the range >75 mg/l mostly concentrated in center and west of the study area, while the concentration with range <75 mg/l is concentrated in the east, and 3) Distribution of TSS is affected by the movement of currents driven by the wind towards the west and southwest and partly collected in the western part of the study area.
Estimating mangrove biomass using drone in Karimunjawa Islands
Authors: Salim H L , Adi N S , Kepel T L , Ati R N A
Published: September 2020

Research on mangrove forest biomass using drones was conducted in Karimun Jawa Islands in August 2018. Karimunjawa Islands is a conservation area under the management authority of the Ministry of Environment and Forestry (KLHK). However potential environmental stress due to increasing numbers of tourists and aquaculture activityis concerned to degrade mangrove ecosystem in the area. The method used in this study includes aerial photography work using drones and field data collection of forest ecosystems. Aerial photography work consists of stages of preparation, aerial photography and aerial photo processing in the form of photos mosaicking and DSM generating. The mangrove field data obtained were tree diameter (DBH), tree height and mangrove genus. To find out the mangrove biomass, the equation Saenger & Snedaker (1993) is used. The results show that the number of branches of mangrove trees are 853 branches with heights varying between 1 to 15.5 meters and an average height of 4.4 meter. The estimated mangrove biomass in the study site is 82,154 tons/hectare. This study successfully demonstrated that by using relatively low operational cost consumer-grade drone and can help map the characteristics of mangrove vegetation. However, drone technology still has some limitations, including the need to use GPS Geodetic for accurate positioning. Using this supporting technology, it is expected that the position and height of the tree can be measured more accurately.
Distribution patterns of redox potential in intertidal zone of Blanakan coast and their implication on the coastal ecosystem
Authors: Takarina N D
Published: September 2020

The intertidal zone of Blanakan Coast has an area of approximately 15 ha. The Blanakan Coast itself is important fishing ground. Correspondingly, a study to assess the water quality in the coastal ecosystem is important. One of important water quality parameters is reduction and oxidation (redox/Eh) potential since it can indicate the anoxia condition. Nevertheless, the detailed spatial variation of Eh is poorly understood, especially in intertidal zone where anoxia may be a significant environmental constraint for marine organism. The Eh data were recorded from 7 sampling points in intertidal zone. Based on the result, the mean value of Eh is ranging from -20.0 to -50.67 mV. The poorest intertidal zone was found in the sampling point closed to the river mouth with mean value of Eh is -50.67 mV. Another poor intertidal zone was found in the eastern part of intertidal zone closed to the coast with mean value is -46.16 mV. The better condition of intertidal zone was found in the northern and western part of intertidal zone with mean value is -25.16 mV. The study also found that value of Eh is significantly correlated with the value of dissolved oxygen (DO). The DO is high when the value of Eh is high and the DO is low when the value of Eh is low. For example, the -50.67 mV redox potential significantly reduced the DO in the intertidal zone as low as 1.56 mg/l. Thereby, this Eh can cause anoxia condition in ecosystem of intertidal zone especially near river mouth and east side.
Study of coastline changes and land use change in marine protected area (Case study: Derawan Island, East Kalimantan Province)
Authors: Purbani D , Ramdhan M , Salim H L , Daulat A , Dwiyanti D , Winarso G , Syahputri S
Published: September 2020

Derawan Island is an island with an area of 45 ha, it categorized as a small island and part of Derawan Islands archipelago located in East Kalimantan province. It designated as a conservation area by the decision of Berau District Head No. 516 of 2013 concerning the Reservation of Coastal Conservation Areas and Small Islands. Derawan Island, also known as the National Tourism Destination (DPN) based on its coral reefs diversity that considered adjacent to the Coral Triangle Initiative (CTI). The increase of Tourist visits to Derawan Islands since 2000, which affected land cover changes in Derawan Island coast such as for lodging, jetty and other infrastructure. Changes in land cover together with natural coastal processes causing abrasion in the west, and east sides, while accretion in the southeast side of the island. Land cover change especially built-up area from 2003 to 2018 is 6.25% per year. Observations and analyzes using DSAS (Digital Coastline Analysis System) conducted in 2003, 2011 and 2018 illustrates coastline change which shown by abrasion an accretion along Derawan Island. Abrasion trends increased from 2003, 2011 and 2018 with the highest abrasion rate up to 12.4 m / year, which occurred on the west side, while the highest accretion rate was 2.46 m / year on the southeast side. Based on several considerations and conditions, it is highly recommended that the coastal border for utilization in the islands is around 15 m.
Eco-contagious: bringing urban riverscape into sustainable urban landscape
Authors: Khrisrachmansyah R , Nurfatimah C , Rachma A , Utami A S , Prihabsari A K
Published: September 2020

Nowadays, many cities develop their facilities, technologies, architectural, or even “starscape”. Rarely had urban area consider their ecological perspective into design practice mainly in tropical developing countries. In developing countries, river condition today has been deteriorating; thus, it will impact to the ecological continuity fragmentation. Bogor itself has the oldest Botanical Garden in Indonesia. It has richness in biodiversity, both plantations and animals. Nevertheless, there is a Ciliwung River break through the middle of the area, along the way to the Capital City of Indonesia, Jakarta. This study aims to find a new model of urban riverscape principles in a setting of urban area. The analysis had been done in this study, including river sinuosity calculation, corridor connectivity calculation using geographic information system (GIS) through list cost path analysis, and also finalized with designing the public and private open space as strategies to bloom the ecological aspect across the region.
Typology of socio-economic characteristics of municipalities and regencies in West Java Province
Authors: Yuwono J , Jatayu A , Aisharya I Y
Published: September 2020

For years, the Province of West Java has been facing several development challenges, such as poverty, malnutrition, low access to education, etc. It is assumed that the characteristics are patterned. The aim of this paper to present the typology of socio-economic characteristic of municipalities and regencies in West Java Province. By combining cluster and spatial cluster analysis, we figured out that the three cluster of areas represented the domination of examined regional development variables. Spatial cluster analysis employs the spatially weighted variables to form a homogenous cluster of each region in West Java. The first cluster can be classified as peri-urban area (area surrounding urban region) with average-sized population, unemployment, and malnutrition size. The second cluster can be classified as rural area with small population, unemployment, and malnutrition size. The third cluster can be classified as urban area with high-sized population, unemployment, and malnutrition size. We concluded that well-developed municipalities and regencies are concentrated in the western part of West Java, a particular area that is has a close proximity to the capital city of Indonesia.
Investigating the response of students with disabilities to earthquakes: Preliminary results
Authors: Sianturi R S , Pamungkas A , Elisiyah I , Ferrajuanie A , Putri R I , Yusuf M
Published: September 2020

This research aims to investigate the responses of students with disabilities to earthquakes. To achieve the goal, this study investigated the perception of evacuation plans for earthquakes among students with visual impairments (n=32, junior and senior high schools) and their teachers (n=12) using in-depth interviews. The questions asked to the respondents encompassed the knowledge and experience of earthquakes, safe school buildings and designs, evacuation plans, and assistance during emergencies. An evacuation simulation for earthquakes was also performed to understand the ability of students to protect and evacuate themselves from earthquakes. Testimonials were also noted from students and teachers after the simulation to understand interventions needed to improve the students’ response in facing earthquakes. The interviews and simulation processes were recorded using voice and video cameras, respectively. A qualitative content analysis was used to scrutinize the responses obtained from the interviews and evacuation simulation for earthquakes. The results of interviews showed that the majority of SWDs show poor (n=22) responses to earthquakes. Only a small number of students show moderate (n=4) and good (n=1 people) responses to earthquakes. The interviews revealed aspects need improvements, including the knowledge about earthquakes, reaction time to earthquakes, self-protection and evacuation procedures, safety of school buildings, and design of school building to support swift evacuation. Furthermore, the simulation for earthquakes exposed that the students are vulnerable to earthquake disasters. In addition to the lack of ability to protect and evacuate themselves during earthquakes, the students are not prepared mentally to face earthquakes. Capacity building through regular evacuation simulation for earthquakes, knowledge improvements in earthquakes, and self-protection training is likely to reduce the risk of being adversely affected by earthquakes.
Public relation knowledge about disaster management in the emergency response phase as an effort for disaster risk reduction
Authors: Mahful R , Rosidah A , Algifari A
Published: September 2020

According to Sutopo, Head of the BNPD Data, Information and Public Relations Centre, the earthquake disaster that occurred in Palu, there were 1,948 fatalities, 843 missing, and it is estimated that many victims were buried in the estimated figures until they reached thousands (BCC Indonesia, 2018). The losses suffered are also estimated to be very large. Preparedness is one part of the disaster management process and in the current developing concept of disaster, the importance of preparedness is one of the important elements of proactive disaster risk reduction before a disaster occurs. (LIPI-UNESCO, 2006). The object of this research is the people of Palu who live in Temporary Resettlement in several locations, namely Petobo, Balaroa, Silae, Lero, and Kampung Baru. This study uses economic modelling methods to determine the relationship between variables and as many as 150 people are sampled in the collection of data needed. The variables of this study are age, education, occupation, and aspects contained in the disaster risk reduction index (Carreno et al., 2004). The conclusion is that age is very influential on emergency response planning and implementation of warning systems as well as community preparedness and training, on the other hand education and employment have no effect at all in the DRR index. Therefore, there needs to be an evaluation from both the local and central government, the community, and academics to think about ways to reduce disaster risk by increasing public knowledge of disasters
Identification of slum typologies based on priority infrastructure (Case studies Jember District)
Authors: Farizkha I A , Listyawati R N , Alfiah R , Koesoemawati D J
Published: September 2020

Slums are one of the urban problems that occur in almost all regions in Indonesia. As one of the pillars of sustainable development, and to deal with problems related to slums, every City / Regency based on Government Regulation are required to prepare RP3KP documents as a master plan for regional settlements. Jember is one of the areas in Besuki Raya that already has housing and settlement planning products but is still in the RP4D format. Based on these conditions, Jember is categorized as a district that does not have a settlement area planning instrument that meets the standards. In fact, there are 37 villages classified as slums with an area of 47.2 ha, uninhabitable houses reaching 3,940 units in slums in Jember Regency (Kotaku,2017). The results of the study is useful as a basic reference in the formulation of residential area planning policy in Jember Regency. With the typology and formulation of priority infrastructure needs analysis in slum areas, a general description of the condition of the characteristics of slums in Jember Regency can be described. The results show that physically, the infrastructure to be aware of are road infrastructure, building conditions, waste management and fire danger
Planning for compact eco-cities: a spatial planning to prioritise green infrastructure development to mitigate urban heat island in Surabaya
Authors: Syafitri R A W D , Susetyo C , Setiawan R P
Published: September 2020

The phenomenon of Urban Heat Island (UHI) will be exacerbated in the coming years by rising surface temperatures due to urban growth. Implementation of urban green infrastructure (UGI) such as green roof, green wall, parks, road trees can help reduce temperatures in urban areas, including reducing pollution. Currently, there is no information available for land managers to determine the right strategy for UGI implementation based on a spatial approach. So that a framework is arranged to determine UGI priorities and elections in creating a compact eco-city. The framework is supported by a review of scientific literature related to UHI phenomenon in Surabaya, UGI and urban heat island mitigation in comparative descriptive and gap analysis. UGI implementation priorities are allocated based on observing the location of urban heat island using Landsat 8 OIL TIRS, behavioral Exposure and spatial land-use patterns are taking a result in Kali Rungkut sub-district, East Surabaya.
Land change prediction in Bondowoso Regency using Automata Markov method
Authors: Firmansyah M , Koesoemawati D J , Dewi R A P K
Published: September 2020

This study examines changes in agricultural land in Bondowoso district using Cellular Automata Markov technique. The research method uses Bondowoso Regency Satellite Image data input in 2000, 2010, and 2019. In this study several analysis processes were carried out, such as land change factors, land conversion sequences, conversion dynamics index, intensity index of conversion of agricultural land. The results of the analysis in this study are maps of land use changes in the year predicted using the validation test. The process of making maps of predicted land changes include several variables such as slope, population density, distance from arterial roads, distance from collector roads, distance from the district capital, distance from the subdistrict capital, distance from campus, distance from attractions, distance from markets, spatial pattern policy and regional integration into the provincial spatial plan. From these results obtained the dynamics of changes in agricultural land in Bondowoso district.
Institutional assesment through climate and disaster resilience initiative in Surabaya
Authors: Kurniawati U F , Susetyo C , Setyasa P T
Published: September 2020

Climate change is inevitable and adaptation is a must. Surabaya as an urban area that contributes to the phenomenon of global warming. The challenges of the City of Surabaya in managing the impacts of climate change need to be further considered. On 21-22 February 2018, the City Government of Surabaya joined the Climate Change Adaptation Workshop. In managing the impacts of climate change, it is necessary to synchronize national, regional and local government policies and create SOPs for climate change adaptation actions. In addition, another priority is spatial planning that takes into account climate change in the context of development. Responding to the suggestions expected from the workshop, this research focuses on assessing risks due to climate change involving institutional aspects. This institutional aspect was taken with the intention of providing recommendations to managers and decision makers in making processes and designing policy analyzes to reduce and adapt to climate change. The results showed that there were six Surabaya City Organizations that were considered to have significant influence and interest in the field of climate change. In addition, historical disaster data on climate change has been derived, which states that disasters in Surabaya include floods, whirlwinds (extreme weather), drought, and forest and land fires. Based on the Likert scale scoring calculation results, it is known that the Surabaya City Organizations resilience a with the CDRI concept is 4.47. This figure indicates that the resilience level of the City of Surabaya is seen from the institutional aspect is relatively high and needs to be maintained.
A brief introduction to LENSOLVER as linear programming application
Authors: Pratomoatmojo N A
Published: September 2020

Linear programming technique is a model that can be used to solve the problem of allocating resources with limited conditions. This technique is often used to solve problems in several good fields. Linear Programming is a deterministic tool in which all model parameters are assumed to be known with certainty. In addition, the use of linear programs can be used to make decisions from various alternative objectives in the form of activities or strategies, where there are constraint functions considered. In this paper introduces LENSOLVER, as an application of linear programming application. In this early stage of development, LENSOLVER is developed based on the PuLP framework. PuLP is a library for the Python programming language that allows users to create mathematical programs for problem-solving optimization and decision making by means of calculating variables using mathematical expressions. However, this first development of LENSOLVER has a limitation of not supporting non-linear optimization. Considering the ease and reliability LENSOLVER was developed to reach non-programming users who want to implement various linear programming techniques in several cases in operations research.
Numerical simulation of double deck pavement for long-span cable-stayed bridge
Authors: Guo Kun , Liang Junwei , Han Xin , Pu Guangning
Published: September 2020

The double-deck pavement of the long-span cable-stayed bridge was set as the research object, by setting the load position, load condition and reference point on the bridge deck, the parametric analysis of the elastic modulus, thickness and temperature of the pavement material was performed. Then Pavement structure parameters suitable for the bridge were get. The finite element software was used to simulate the pavement effect of the No. 1 bridge of Haidong Avenue under the actual load, which provided reasonable optimization measures for the construction method of large-span steel bridge deck pavement in high and cold areas.
System Design and Characteristic Analysis of Follow-up Hydraulic Muffler Based on Gear-Screw Transmission
Authors: Chang-ji Shan , Jun Yuan , Hang Jiang , Yi-duo Bian , Yan Cai , De-lan Wu , Yin Zhao , Xing-wei Pan
Published: September 2020

In order to improve the attenuation frequency range of traditional static two-stage H-type hydraulic muffler, a two-stage follow-up hydraulic muffler driven by gear-screw is designed based on PLC. The Muffler can change its structure parameters according to the rotational speed of the hydraulic pump, and attenuate the two pulsation frequencies of the hydraulic pump. Considering the structural parameters and gear transmission of the muffler, the static and dynamic characteristics of the muffler are analyzed systematically, and the stability of the muffler is verified by the case simulation test. The results show that the two-stage follow-up hydraulic muffler based on PLC can attenuate the two pressure pulsation frequencies at the same time, and the operation is stable and the response speed is fast. The two-stage follow-up hydraulic muffler has practical significance and value to provides a way for engineering hydraulic system noise reduction.
Humidity Comparative Study of New Maintenance Method in Airport Pavement Concrete of China
Authors: Ma D X , Liu Y , Lai Y , Wang P , Zhang W , Li Bo
Published: September 2020

Through comparing actual projects this paper presents and discusses the effects of curing film and geotextile on humidity of airport pavement concrete during maintaining process. The results show that, compared with the maintenance of geotextile, the curing film can ensure sufficient humidity, and it has very significant uniformity and continuity.
Evaluation of regional sustainable development based on ecological footprint model — take Luzhou city as an example
Authors: Huan Luo , Fang Wang
Published: September 2020

To clearly understand the ecological status and future sustainable development of Luzhou City, based on the ecological footprint model, this paper quantitatively studies the sustainability of Luzhou city’s development in 2006-2016, and forecasts the sustainable status of Luzhou City in 2017-2026 by using the grey system prediction model. The results showed that Luzhou city was in the state of ecological deficit from 2006 to 2016, but showed a decreasing trend year by year. Luzhou city’s ecological economy is in a weak and unsustainable state, and the structure and function of the ecological economic system are being optimized and adjusted. Therefore, to realize the sustainable development of Luzhou ecological economy, it is necessary to adjust the industrial structure, reduce energy consumption and promote the sustainable development of the region.
Ecological security of economic belt from the symbiosis perspective--a case study of the Yangtze river economic belt
Authors: Wu Yanxia , Wang Yajuan , Wang Yanlong
Published: September 2020

As an advanced stage of the urbanization process and the main force driving the high-quality development of China’s economy, the economic belt has caused the emergence of ecological security problems in the economic belt while its economic growth. In this paper, the Yangtze River Economic Belt, a national strategic layout area, is used as an empirical research. Based on the symbiosis theory, the Lotka-Volterra model for ecological security measurement of symbiotic development is constructed, and according to the actual conditions of 11 provinces and cities in the Yangtze River Economic belt, comprehensive evaluation of the ecological security of its are conducted. The research results show that: (1) From 2008 to 2017, the overall ecological carrying capacity of the Yangtze River Economic Belt was low, and the regional ecological conditions have improved but not obvious; (2) Through the reverse decoupling of indicators, it was found that the resources along the Yangtze River were over-exploitation, the serious pollution of industries and agriculture, and the base of pollutant emissions is large; (3) To improve the resources and ecological environment of the Yangtze River Economic Belt, it is necessary to strengthen source prevention, comprehensively promote pollution remediation, repair damaged ecology, and promote green sustainability development.