bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on initial alignment method of vehicle-mounted SINS based on reverse navigation
Authors: Yang Chen , Cai Yuanwen , Xin Chaojun , Shi Meiling
Published: March 2021

In order to improve the alignment accuracy and speed of vehicle-mounted SINS, an initial alignment scheme of “inertial solidification alignment + Kalman filter fine alignment based on reverse navigation” is proposed in this paper. Firstly, an inertial solidification alignment algorithm is derived, the initial alignment problem is transformed into Wahba problem, and the optimal attitude matrix at the initial moment is obtained by singular value decomposition algorithm. The inertial solidification alignment algorithm is more concise and intuitive than the traditional alignment algorithm of geocentric inertial coordinate system. Then, we analyzed the effectiveness of rotation modulation technology to improve alignment accuracy theoretically and proved it by simulation. And it is pointed out that the application platform space is limited and the system cost is increased when using this technology. Furthermore, in order to overcome the shortcomings of using rotation modulation technology, a Kalman filter algorithm based on reverse navigation is derived. By reusing the data stored during the inertial solidification alignment, the alignment time is extended equivalently, the initial attitude error is reduced and the attitude calculation accuracy after forward navigation is improved, higher precision alignment is realized. Finally, the effectiveness of the initial alignment scheme is verified by simulation.
Rotary Inertial Navigation Active Disturbance Rejection Controller Based on Adaptive Genetic Algorithm
Authors: He Jinyang , Zhuo Chao
Published: March 2021

The high-precision control of the rotary servo is an important way to improve the navigation accuracy of the inertial navigation system. This paper proposes a parameter tuning method of active disturbance rejection controller based on adaptive genetic algorithm. Specifically, in order to ensure that the genetic algorithm has strong capability of global search and convergence performance, it adjusts the mutation probability and crossover probability of the genetic algorithm according to the individual fitness. Compared with traditional PID controller, the simulation results show that the optimized active disturbance rejection controller (ADRC) has fast response speed, no oscillation and no static error. And finally it realizes faster and high-precision control on rotary inertial navigation.
Research on Inter Frame Motion Optimization of Visual SLAM
Authors: Wang Yibo , Liang Weishan
Published: March 2021

The key of visual SLAM is VO (front end) algorithm. Aiming at the problems of complex calculation and low robustness of feature point method widely used in VO, an algorithm for solving camera motion parameters based on chicken swarm optimization algorithm is proposed. Based on the camera pinhole model, the relationship between the two-dimensional image coordinates of adjacent frames and the camera motion parameters is deduced. The optimization function based on Hausdorff distance target is established, and the chicken swarm algorithm is defined combined with visual slam. The fitness function of the algorithm is designed. Based on the checkerboard calibration method, the algorithm is verified by experiments.
Positioning and Ranging Process of RSSI Algorithm Based on ZigBee Technology
Authors: Li Yijie
Published: March 2021

Communication and positioning systems in wireless network are merging and promoting each other. Using wireless communication and parameter measurement to determine the location of mobile nodes, node location information can be used to support location services and optimize network management, improve the location service quality and network performance. In various wireless networks, the location algorithm, location technology and location system to obtain the location information of mobile nodes quickly, accurately and in real time have become the current research hotspot. Based on ZigBee technology, RSSI algorithm is used to complete the positioning and ranging from anchor point to label point, and the positioning and ranging method is applied to practical engineering.
Research and Simulation of Network Control System Smith Estimating PSD Control
Authors: Wang Rongbin , Duan Rui
Published: March 2021

Aiming at the universal problem of time-delay in the Network Control System (NCS) based on the better control of Smith predictive compensation to deal with time delay and the ability of single neuron adaptive PSD algorithm does not need identification process parameters, this paper proposes an intelligent Smith-PSD control based on single neuron adaptive PSD control algorithm and Smith predictive compensation algorithm. The simulation results show that the new controller has a strong robustness and self adaptive, has desirable static and dynamic performance, and its performance is better than that of the regular single neuron PID control or single neuron Smith-PID control.
Design of Three-stage Cascaded Two-Stage Millar Compensated OTA for Wearable ECG Sensor Technologies
Authors: Jianhai WEI
Published: March 2021

The use of wearable sensors to monitor vital signs is an alternative to conventional medical systems in hospitals. Patients with wearable sensors can move freely while under continuous monitoring that can stably receive ECG signals, thereby improve the quality of patient care. In this work, a wearable ECG sensor is proposed. The sensor uses a Three-stage Cascaded Operational Transconductance Amplifier (OTA) as an instrument to amplify the ECG signal. The amplifier uses a Two-stage Millar Compensated amplifier integrated with N-Metal-Oxide-Semiconductor and positive-channel-Metal-Oxide-Semiconductor. The simulation results get a CMRR of 66.84 and 3.967μVrms noise and 0.039μW power and 0.981 Noise Efficiency Factor. Compared with the conventional ECG monitoring system, the entire design is smaller in size, and has low power consumption and low noise. It is observed that one can receive ECG signals stably at all times during the experiment. Also, the collected ECG signal is comparable to the ECG signal obtained using conventional adhesive electrodes.
Software Design of Motor Controller Test System for New Energy Vehicles
Authors: Chen Lei , Mei Lei , Xie Chao , Liao Qi Xin
Published: March 2021

In order to read and write the motor controller parameters, download the motor controller program and make the upper computer interface display the running state of the new energy vehicle drive system. This paper designs a serial communication host computer software using Modbus communication protocol and Ymodem communication protocol. The CAN bus interface is provided by the motor controller. The PC is connected to the CAN bus interface of the controller through USB to realize the communication hardware connection between the upper computer and the lower computer. MFC development framework and C + + programming language are used to complete the development of the upper computer software in Visual Studio 2015. Through the analysis of CAN Bus Analyzer and motor test bench, it shows that the upper computer software runs stably and can correctly read the motor controller parameters and send data to it. The design meets the expected requirements.
Research on Spacecraft Strain Measurement System and Impact Sensing Technology Based on Fiber Grating Sensors and All Fiber Optic Sensing
Authors: Luo Yuxiang , Zhang Qingzhi , Zhang Jiande , Feng Daqiang , Wu Panfeng , Zhang Yongwei , Lv Hongbin , Yang Ning , Wang Dingding , Zhan Hao , Cheng Lin
Published: March 2021

In the process of flight for in-orbit spacecraft, debris and particles in space will collide with the spacecraft at a high speed. These collision will produce strain, pit or perforation on the surface of the spacecraft cabin, forming damage accumulation. Therefore, it is necessary to monitor the strain and impact position of the spacecraft cabin in real time, which will provide a basis for ensuring the reliability and safety of the spacecraft. In this paper, the achievement of strain and vibration information during the process of impact is designed in two ways: touched style and untouched style. The design of touched style needs to meet the requirements of large capacity/ultra-high speed monitoring. The design of untouched style needs to meet the acquisition of high frequency vibration signal in the impact process.
Application of Coanda Effect in Water Jet Propulsion Devices
Authors: Chen Shoutian , Cheng Xuan , Zhang Yan , Ouyang Wu
Published: March 2021

In order to improve the problem of low efficiency of water jet propulsion devices at low speeds, a special multi-ring structure of water jet propeller nozzle is designed based on the Coanda effect. On the basis of the credibility of numerical calculation methods, the hydraulic performance of the special structure is analyzed by using the method of computational fluid dynamics. The results show that the designed structure can effectively improve the problem of low efficiency of water jet propellers at low speeds, which is of great significance to better the performance of water jet propellers.
From lab-to-road: real-world fuel consumption and CO2 emissions of plug-in hybrid electric vehicles
Authors: Plötz Patrick , Moll Cornelius , Bieker Georg , Mock Peter
Published: March 2021

Plug-in hybrid electric vehicles (PHEVs) combine an electric motor with an internal combustion engine and can reduce greenhouse gas emissions from transport if mainly driven on electricity. The environmental benefit of PHEVs strongly depends on usage and charging behaviour. However, there is limited evidence on how much PHEVs actually drive on electricity and how much conventional fuel they use in real-world operation. Here, we provide the first systematic empirical analysis of real-world usage and fuel consumption (FC) of approximately 100 000 vehicles in China, Europe, and North America. We find that real-world mean CO2 emissions of PHEVs are between 50 and 300 g CO2 km−1 depending on all-electric range, user group and country. For private vehicles, real-world CO2 emissions are two to four times higher than test cycle values. The high CO2 emissions and FC mainly result from low charging frequency, i.e. less than once per driving day. Our results demonstrate the importance of real-world vehicle emission measurements and indicate the need to adjust current PHEV policies, i.e. official emission values need to better reflect realistic electric driving shares and incentives need to put more emphasis on frequent charging.
Spatial analysis of coliform bacteria contained in phreatic water in colomadu sub-district karanganyar
Authors: Wisnu I , Muryani dan Ahmad C
Published: March 2021

The objective of this study is to determine (1) the distance of septic tank with phreatic well at Colomadu Sub District; (2) the distribution of colifrom bacteria in phreatic well at Colomadu Sub District; (3) the correlation of septic tank and phreatic well to the content of coliform bacteria The population in this study was all villages in Colomadu Sub District The Sample was using simple random sampling Data collection was carried out by using field measurement for the flow of phreatic water data and septic tank distance with wells and laboratory tests for coliform bacteria content data on phreatic water The analysis used spatial analisis and descriptive quantitative with statistical test was a correlation test The result (1) the distance of septic tank with phreatic well the 11 samples are more than 11 meters 10 samples at 9 – 11 meters 22 samples at 6 – 8 and 27 samples below 5 meters (2) coliform contains in phreatic wells the 25 samples are more than clean water quality standard and 45 samples under clean water quality standard (3) there is negatife relationship of linear correlation (r = -0 27) between the content of septic tank distance with coliform bacteria in phreatic wells
Characteristics of kalisirah karst subterranean stream subdistrict of buayan, kebumen, central java with tracing test
Authors: Triadi W S , Jauhari A , Paripurno E T , Kusumayudha S B
Published: March 2021

The Karst Landscape Region (KRL) Gombong is an area that has developed subterranean stream and provides abundant water resources, one of which is the Kalisirah Springs in Sikayu Village, Buayan District, Kebumen. The Kalisirah spring supports thousands of surrounding communities, especially for domestic needs, fisheries and agriculture. The karst area is an area that is sensitive to change so it is necessary to know the character of a developing subterranean stream system, so that groundwater resources can be maintained in terms of quality and quantity.

The method used is a tracing test with a qualitative and quantitative approach to obtain detailed information about the characteristics of the karst aquifer flow.

Release of trace substances is carried out in Goa Pucung and the fluorometer is placed in the Kalisirah Springs. Release on September 23, 2018 at 9.57 p.m and September 24, 2018 at 3.25 p.m. Fluorometer records an increase in fluorescent concentration. Connection of Goa Pucung-Kalisirah through 2 karst windows (Kalijeblosan and Kaliwinong) that are visible in plain view. The concentration of released tracer substances can be recovered 26.18% in the Kalisirah springs, with discharge recovery reaching 4493%, which indicates a divergence and convergence of the Kalisirah subterranean stream aquifer system. Flow volume from the subterranean stream system of Goa Pucung-Kalisirah reached 23,403,064.49 liters with an average residence time of 24.11 hours. The cross-sectional area is 12.19 m2 and the diameter of the Flow-Channel reaches 3.94 m, and with hydraulic depth from the Flow-Channel 3.09 meters.
Level of population mobility in wonogiri regency
Authors: Hardati P , Rahayu H N
Published: March 2021

The diversity of phenomena on earth led to differences in the characteristics of each region, while the needs of the population are very diverse. These conditions lead to interactions between regions that support population mobility. The focus of this research is permanent population movement or referred to as permanent mobility. Researchers assume that the population is an important component of population mobility that affects the distribution and use of space so that control is needed for regional development planning. This research aimed to analyze the level of permanent in, out and net mobility in Wonogiri. The type of research is quantitative descriptive research. The population in this research that resident of Wonogiri Regency who performs permanently mobility. Research variables used ie the number of in mobility and out mobility. The results showed that the level of permanent mobility entered Wonogiri at 8,56 and permanent mobility levels out at 10,55 as well as the level of net permanent mobility Wonogiri -1.98. The result is known that the out population of Wonogiri more than the in population in Wonogiri. The condition indicates that the thrust of Wonogiri higher than the attractiveness of the area.
The externalities value of mangrove forest conversion into fishponds in the coastal area of wulan delta in demak regency
Authors: Rudi F S , Harini R
Published: March 2021

The high dynamic development in Wulan Delta coincides with the mangrove forest conversion into fishponds. The purpose of this research was to determine the externalities value of mangrove forest conversion into fishponds in Wulan Delta in Demak Regency. This research used a quantitative descriptive method. The data were collected through surveys using questionnaires and an interpretation of fishpond and mangrove forest use through Sentinel 2A on 2016 and 2018. The targets in this research were residents of Menco Hamlet and fishpond owners in Wulan Delta. The data were processed by calculating the economic value of the direct and indirect uses of mangrove forests as negative externalities, and fishpond production as positive externalities. The analysis was carried out in a descriptive-quantitative way by comparing the negative externalities value and the positive externalities value of mangrove forests conversion into fishponds. The results of this research show that the conversion of mangrove forests into fishponds indicates negative externalities. The negative externalities are indicated by fishpond productivity which is not able to surpass the mangrove forest use, even in terms of direct value only.
Practicum based learning in the material “understanding the basics of mapping” in geography subject high school
Authors: Maulidian M O R , Abdi A W , Hasmunir
Published: March 2021

This article explains the experience in implementing practicum-based learning, especially in making maps, in geography Subject Grade X High School in Banda Aceh. It provides an overview of the application of practicum-based learning on map (cartography), which can be referred to by high school geography teachers, especially in Chapter 3.2. “Understanding the basics of mapping, remote sensing, and geographic information systems (GIS)”. This was a literature review that is following the experience of the application of practicum-based learning that we have done in subject schools. The application of practicum-based learning based on maps was done by general practicum based; Grouping, Preparing Materials, Understanding Step Activity, Working Project, and Sharing/Confirm Result. The learning was six themes: (1) copying map data into new maps manually, (2) lettering and completing map attributes, (3) manually counting area on the map, (4) Zoom in and out of the map, (5) Make a Map of the Globe, and (6) Overlays the Map Manually. Copying maps and lettering maps makes students understand about the data and attributes of general maps and understand the elements on the map. Students learn to make grid boxes and calculate the area with map scale make them do basic for calculating the area with pixels digitally. Making maps of a globe directly teaches them the principle of drawing the earth into a flat. Overlapping maps makes students understand the basics of map functions and determine information on it.
Community learning centre in improving disasters awareness through environmental education
Authors: Akbar Z
Published: March 2021

The Community Learning Center is a non-formal education program that aims to expand the reach of education in the community by involving community participation. Environmental education is one of the materials given to students in this centre. This can be an opportunity to increase community disaster awareness especially in relation to floods disaster that often occur in the area. The purpose of this paper is to find out: (1) Strategies to increase the role of community learning centre in improving disaster awareness through environmental education, (2) Environmental education that can be utilized in increasing disaster awareness in community learning centre in East Jakarta, (3) Factors supporting and inhibiting strategies for improving disaster awareness through environmental education at community learning centre.
Evaluation of environmental based geography instructional model in high school
Authors: Prihadi S
Published: March 2021

The environment has a role in human life. Learning in schools should introduce students to environmental awareness. The goal is for students to keep the environment sustainable. In research on the geography instructional model has the purpose of conducting a test of product one to one evaluation, small group evaluation, and field triall evaluation. The evaluation product model was conducted in high school in Surakarta. The result of a product test is that the environment-based geography instructional model is effective for creating a fun learning. During the test the product can be concluded that students are highly motivated when invited to study geography by discussing environmental issues.
Effect of learning project model-based learning on GIS spatial thinking skills students
Authors: Romadlon R W , Yusuf Y , Sarwono
Published: March 2021

Developing students in geographic information technologies is the main reason for describing things like models and approaches, which is based on classroom learning and focus on theories of teaching and learning technical. This research used quasi experimental True Experimental Design model with pretest-posttest control group design and 45 students of 12th grades of MAS AL ISLAM in academic year 2018/2019 as the population. Purposive sampling with initial data values First Final Assessment were used based on 12th grades Social 1 as the control class and Social 2 as the experimental class. In the control class, GIS learning is applied conventionally while the experimental class is applied Learning Project Based Learning Model-GIS. The data method were analyzed by SPSS 16 software through observation, documentation, and testing STAT (pretest and posttest) with quantitative data analysis techniques. The results showed that the Project Based Learning Model Learning-GIS affecting spatial thinking abilities 12th grades Social 1 students by tests Independent Samples T-test posttest score STAT students who demonstrate the significant value of 0.02 (<0.05). This is consistent with the study of theory about project-based learning model in GIS material as a model approach that is effective to increase the spatial analysis techniques.
The environmental care level of junior high school students in surakarta
Authors: Arjani A , Santoso S , Muryani C
Published: March 2021

Adiwiyata School is a place that facilitate the students to elevate their awareness dealing with the importance of taking care of the environment. The purpose of this research is to find out the implementation of Adiwiyata School and the students’ environmental care attitude on Adiwiyata State Junior High Schools (SJHS / SMPN) in Surakarta. The technique of the sample collecting employs Stratified Technique random sampling to determine the sample which is being examined, random sampling for teacher sample and staff also sampling quota for the students. The techniques of collecting data are field observation, questionnaire, interview, and documentation. The result of the research shows that the implementation of Adiwiyata School at SJHS 1, 7 and 11 in Surakarta is categorized as excellent. The students’ environmental care towards Adiwiyata School, which is seen from the result of the calculation, shows that the mean percentage is categorized as excellent.
A possible opak fault segment that caused the 2006 mw 6.3 yogyakarta earthquake and its future implication
Authors: Pratama C , Widjajanti N , Parseno  , Pinasti A , Ummi R F , Lestari D , Sunantyo T A , Heliani L S , Ulinnuha H
Published: March 2021

On May 26th, 2006, the Mw 6.3 earthquake devastated the Yogyakarta region in a shallow strike-slip mechanism. Previous studies suggest the 2006 Yogyakarta earthquake aligned with the Opak river fault. However, several studies reported the aftershock distribution occurred along the eastward side of the Opak river fault strike. Those discrepancies may indicate two possibilities. First, the Opak river fault has an eastward dipping fault. Second, there are unidentified fault lines rather than Opak river fault. In this study, we investigated the fault segment that was responsible for the 2006 earthquake. We estimated the fault length based on seismic moment release assuming rigidity, fault depth, and coseismic displacement are 30 GPa, 12.5 Km, and 1 m, respectively. Therefore, we investigated the two possible scenarios using multi-years and recent Global Navigation Satellite System (GNSS) network developed by the Department of Geodetic Engineering, Universitas Gadjah Mada. The GNSS observation suggests the 2006 Yogyakarta earthquake occurred on the unidentified fault rather than has an eastward dipping fault. The estimated fault length is only 9.2 Km segment. Hence, the present study implies that other fault segments might not have released the accumulated stress and may become large earthquakes in the future.
Disaster concepts and mitigation based on the students of the language and arts faculty, universitas negeri semarang
Authors: Irawati R P , Siminto  , Supriatnaningsih R
Published: March 2021

Disaster mitigation, in accordance with the Republic of Indonesia Law Number 24 of 2007 article 47, is carried out to reduce disaster risk for communities in disaster-prone areas, which can be in the form of education, counseling and training, conventional or modern. The formulation of the issues to be discussed in this article is the concept of disaster and disaster mitigation according to the students from Faculty of Language and Arts of Universitas Negeri Semarang. The research subjects were Universitas Negeri Semarang’s students, especially the students from the Faculty of Language and Arts. Data collection of this study were interviews and questionnaires. The data analysis technique of this study used qualitative descriptive techniques. 56% of students think that natural disasters are more dangerous than social disasters and non-natural disasters, because natural disasters cause huge losses, both soul and property. 70% of students think that the residence and campus environment are safe from the dangers of natural disasters, because natural disasters have never occurred and are not in disaster-prone areas. 65% of students think that disaster mitigation has not been implemented and the community does not yet know the procedures for rescuing themselves during a disaster.
Vegetative conservation for landslide mitigation in bungaya sub-district, gowa regency, south sulawesi province
Authors: Mufidawati H , Damayanti A , Supriatna
Published: March 2021

Landslides disaster that occurred in Indonesia has caused environmental damage and claimed many lives. Bungaya has a high risk of landslide threat and includes areas affected by severe landslides, so landslide mitigation needs to do. Landslide mitigation is an effort to reduce the risk of landslides, which can be applied by doing soil conservation. This study aims to find out the spatial pattern of vegetative conservation to prevent landslides in Bungaya. Slope morphology and slope gradient variables used to determine the potential area of landslide, obtained from BIG in 2018 and processed by the SMORPH Method. Data of vegetative conservation variables obtained by observation and interview. Analysis that used is an overlay technique on landslide potential areas, land use, and location of landslides. The highest potential of the landslide, clustered in the southern part of Bungaya, and moderate to low potential is randomly scattered. The highest potential is in Rannaloe and the lowest in Bissoloro. In Bungaya, several types of soil conservation techniques have been carried out using the vegetative method, namely crop rotation of paddies and secondary crops. Besides, agroforestry techniques are also carried out, namely yard garden and talun-garden by planting annual crops and seasonal crops.
The Readiness of villages in Surakarta City Toward The Disaster Resilient Village
Authors: Muryani C , Koesuma S , Yusup Y
Published: March 2021

This study aims to assess the readiness of villages in the Surakarta city to be developed into disaster resilient villages. The research location was 14 villages which are prone to floods in Surakarta city. The research subjects were the government and the community, the research sample was taken purposively, each village was taken 2 government officials and 3 community leaders. Data collection using disaster resilient village preparedness questionnaire made by BNPB consists of 6 indicators which are described in 60 questions. The results showed that in Surakarta there were 2 intermediate disaster resilient villages, 4 primary disaster resilient villages and the remaining 8 villages were included in the non-resilient category. In general it can be said that the disaster resilient of villages of Surakarta city was still low.
Fostering disaster preparedness school as an effort to build disaster preparedness
Authors: Ikramullah A M , Maryani E , Setiawan I
Published: March 2021

Indonesia is a disaster-prone area, because it is important to create preparedness in the school community. One of the comprehensive effort to strengthen disaster preparedness through disaster preparedness school fostering. This study aims to find out the implementation of disaster preparedness school fostering at school’s communities. The method used was a survey of twelve schools in Banda Aceh City, with respondents consisting of education personnels, teachers, and students. The results showed that (1) disaster preparedness school fostering programme categorized less implemented (2) the level of preparedness in disaster preparedness school community categorized as high preparedness. (3) factors that influence the implementation of disaster preparedness school fostering (a) school commitment and (b) support from the government. The fostering activity that has not been done properly i.e exercises simulating disaster, workshop/seminar disaster at school. In addition to fostering in disaster preparedness schools, preparedness participates by the experience of individuals in dealing with disasters.
The preparedness of schools in dealing tsunami disaster threat in pacitan coastal bay, pacitan regency
Authors: Nawangsari D , Nurhadi  , Sarwono
Published: March 2021

Schools are responsible for ensuring the safety of students if a natural disaster occurs during school hours. Besides, schools can implement disaster management towards the natural hazard in the form of effective preparedness so that the school’s resilience to disasters has been successfully improved. This study was aimed to determine the level of preparedness of students, teachers, and schools in dealing with the tsunami in Pacitan Bay, Pacitan Regency. The data collection method was done by filling out questionnaires and interviewing respondents participated by 165 students and 39 teachers conducted in 11 schools in the Pacitan regency using a purposive sampling technique. The data analysis method was descriptive qualitative. The results showed that there were differences between schools especially in the matter of preparedness. School preparedness is influenced by knowledge, emergency planning, resource mobilization, early warning systems and school policies and the geographical location of the school. However, the level of school preparedness in Pacitan Bay which plays an important role is school policy. School policies in Pacitan District 36% are included in the low category, so there is a need for an increase in disaster preparedness policies in schools.
Disaster-vulnerable community perception related to pre-earthquake natural phenomena in west sumatera as part of disaster preparedness
Authors: Fadilah M , Maryani E , Permanasari A , Riandi R
Published: March 2021

This article aims to describe the perception of disaster-vulnerable community-related natural phenomena before the occurrence of earthquakes. This research applies the survey methods and purposive sampling. A total of 229 respondents from earthquake-prone districts respond to questionnaires and interviews. The data are analysis quantitatively (percentages). The finding informs that many people are well acquainted with earthquake characteristics, threats and risks of earthquake impacts in West Sumatra based on scientific knowledge. Amongst the four regions of the community, the Padang Pariaman people experience nature and animal anomaly before the earthquake. The two unusual phenomena which are recognized are the rising temperature and the appearance of a vertical tornado-like cloud, beside nervousness of a dog, cat, cow, and bird. However, the community has not employed this perception based knowledge as a recommendation to act in quake preparedness. Beliefs in religious have much-driven people in responding to the threat of hazard. It can be concluded that even though the community perceives natural changes before the shock, but these phenomena have not become part of disaster preparedness yet. It is being a challenge for further research to build an earthquake preparedness approach which considers scientific knowledge, local knowledge and values, and trust to the Gods’ provisions
Community adaptive capacity using social media at the aftermath of tropical cyclone cempaka, indonesia
Authors: Widyanarko U , Hizbaron D R
Published: March 2021

Tropical Cyclone Cempaka is one of the tropical cyclones hit the southern Coast of Java Island, Indonesia. The occurrence triggered flood and landslide which impacted to disrupted community livelihood. There were damages upon paddy fields, settlements, and many other public facilities such as roads and bridges at the aftermath of Tropical Cyclone Cempaka. This research aims to evaluate how community adaptive capacity towards Tropical Cyclone using social media. The main idea to use social media is to expand response coverage towards Tropical Cyclone. The community is understood not only as person or accumulative people who live in specified administrative unit, it could also those who had interest towards particular administrative unit. The research method employed spatial temporal approach to identify distribution of Twitter data responded towards the event. The research intends to collect data with series of relevant hashtags, and to observe data into several categories. The preliminary research reveals that there are significant changes in most frequent keywords during the disaster event. The most frequent tweet during emergency situation is the general information about the events. Afterwards, tweets characteristics shifts during rehab-recons phase into words relevant to raise supports and spirits. The spatial distribution of tweets originated from cities, and megacities, such as Jakarta, Surabaya and many others. Relevant to the idea, community adaptive capacity towards Tropical Cyclone Cempaka was not merely conducted by local community, it also involved variedly to the national to regional community using social media.
Study on community capacity of south lampung in dealing with disaster
Authors: Eridiana W , Nandi
Published: March 2021

The high potential of disasters coupled with the increasing number of people who are vulnerable and the inability to deal with disasters causes the risk of disaster is still relatively high. To reduce disaster risk, disaster management actions need basic information including the level of disaster risk and the ability of the community to deal with disasters. This study aims to: (1) identify public knowledge related to earthquake and tsunami disasters, (2) identify disaster emergency response, and (3) analyze community capacity in dealing with disasters that occur in the South Lampung region. The method used to achieve these objectives is explorative-survey, with a geographic approach that is the territorial approach. The population in this study were all regions in South Lampung (Kalianda Regency and Kota Agung and Rajabasa). The observation sample was determined by using purposive sampling technique in each region. Data collection is done by observation, interview, literature study, and documentation using percentage analysis. The results showed that in general the people of South Lampung have the capacity to deal with disasters in terms of knowledge aspects of disaster and emergency response when a disaster occurs.
Land value analysis in the suburban of Bandung and agricultural land availability impact
Authors: Somantri L , Ridwana R , Himayah S
Published: March 2021

Suburban of Bandung City is an expansion area of the city development activities. The magnitude of the development of the city of Bandung is inseparable from the problem of limited area and land prices, so that development to meet these needs extends to suburban areas. This causes a change in the area of agricultural land in the suburban of Bandung. Analysis the value of land on the edge of the city of Bandung is useful to determine the condition of the land and its impact on the availability of agricultural land. The place of research was conducted in the suburban of Bandung which included Lembang, Cimeyan, Cilengkrang, Margaasih, Margahayu, Bojongsoang, Dayeuhkolot, North Cimahi, South Cimahi Districts, Parongpong and Cileunyi. The research aims: 1) analyzing the value of land in the suburban of Bandung, 2) analyzing the impact of land values on the availability of agricultural land in the suburban of Bandung. Based on the method of this type of research is descriptive research that describes the results of interviews about the value of land and its impact on the availability of farmland. The resulting analysis in the form of the availability of agricultural land in the suburban of Bandung is decreasing due to the low value of agricultural land.
Economic valuation of coal mine reclamation kandih, sawahlunto regency, west sumatera
Authors: Yuniantari R , Harini R
Published: March 2021

Reclamation of post coal mining area in Kandih, Sawahlunto Regency needs to be conducted with concern for environmental sustainability and local economic growth. This study was aimed at determining the economic valuation use and non-use of the reclamation of the post coal mining area in Kandih with the approach of willingness to pay (WTP). The research was conducted in the concession land area of post coal mining in Kandih, West Sumatera. Primary data were collected by dialog tourism, the mining company, and regional government office. The study sample consisted of tourists, community and business actors. Data analysis methods used include Travel Cost Method, Contingent Value Method with Willingness to pay approach. The assessment of WTP used open-end questionnaire. The results show that the value of Reclamation of post coal mining area in Kandih, Sawahlunto Regency identified four variables consisting of the economic value of tourism activity, the economic value of the products and services and economic value of conservation, economic value of satisfaction to tourist area. Valuation of economic value of use and non-use of of the reclamation of the post coal mining area in Kandih, Sawahlunto Regency is Rp 6.911.318.865,00,-.
Analysis of the status of rice and vegetable farming sustainability in gembong watershed karanganyar regency on 2019
Authors: Noviani R , Setiawati S
Published: March 2021

Sustainable agriculture is an effort carried out to meet current needs and not interfere with future fulfillment This research was conducted in the Gembong Watershed in Karanganyar Regency The purpose of this reseach is to determine the sustainability status and key factors for the sustainability of rice and vegetable farming in the Gembong watershed The method used is MDS (Multidimentional Scalling) with Rapid Appraisal of Rice Farming (RAP-FARM) from three dimensions namely ecology economics and socio-culture To determine key factors using leverage analysis with perspective analysis The results show that rice and vegetable farming in the Gembong watershed uses RAP-FARM which is 48 44 in the sustainability index including less sustainable the results of leverage analysis show that the 15 attributes there are 3 sensitive attributes that affect the sustainability of farming The perspective analysis shows that there are 3 main factors that influence the sustainability of rice and vegetable farming: (1) rainfall (2) changes in agricultural APBD and (3) absorption of agricultural labor Efforts to improve the sustainability of rice and vegetable farming in the Gembong watershed are by improving these 3 sensitive attributes
Agriculture developement based on regional potency in kulonprogro regency
Authors: Rozaki Z , Wijaya O , Wardana C K
Published: March 2021

Agriculture sector has important role in the economic stabilization from micro to macro level, it has quite strong role in the bottom level of peoples’ economic especially in the rural or marginal area. Indonesian agriculture is still dominated by food production such as rice, maize, cassava, peanut and soybean. These commodities can be consumed by farmers or can be sold, this reason make these are popular to be planted. This research aims to determine the programs to develop agriculture in Regency Kulonprogo, Yogyakarta. Cluster analysis was used to determine the development program based on potential commodity each area. Potential commodity was analyzed with location quotient analysis (LQ). Results show that paddy wetland, paddy dryland and peanut have average above one, it means these commodities have potency to be developed. Maize, cassava and soybean in average does not show LQ above one, but in some subdistricts show above one. 12 subdistricts were grouped by their similarity in to three clusters. Cluster 1 has similarity in rice wetland, non-agriculture land, agriculture shop, bank, cooperation, high school, higher school and farmers group. Cluster 2 has similarity in rice wetland, uneducated people, and non-farmers occupation. And cluster 3 has similarity in rice dryland, market, farmers’ occupation and basic school. Based on the LQ and cluster, the programs for developing agriculture are increasing human resource quality, organization and facilities.
Identification and evaluation of level crossing for train accident mitigation using geographic information system application
Authors: Nandi  , Ismail A
Published: March 2021

The condition of most of the railways in Indonesia, especially in southern West Java, intersects the highway. Increased train traveling and public transportation on these level crossings potentially risks accidents to occur between trains and public transportation. To prevent this accident and secure railroad travel, it is necessary to identify and evaluate the existence of the level crossings. This study aims to gather information, so that it becomes a database on the southern cross of West Java. The identity of the plot is in the form of: number of gatekeepers and KM, gatekeeper coordinates, intersection status, road status, alignment condition, road completeness (signs and markers), and gate type and road emplacement conditions. The method used in this study was a survey method. Data were analyzed using spatial analysis with the application of Geographic Information Systems. Based on the result, the number of level crossings in southern West Java consists of the Bandung – Tasikmalaya and Tasikmalaya – Maos tracks. The number of survey point locations is 563 points. With the availability of databases and track information on the southern cross of West Java, the data can be used for the purposes of railroad accident transportation mitigation in the form of a road map with a detailed and accurate identity.
Urban tree analysis using unmanned aerial vehicle (uav) images and object-based classification (case study: university of indonesia campus)
Authors: Wicaksono A , Hernina R
Published: March 2021

This paper aims to analyze the urban trees located in University of Indonesia campus using UAV image and Object-based Image Analysis (OBIA). Herein, DJI Phantom 4 Pro was flown at 90 meter height to take image above the study area with spatial resolution of 2.4 cm/pixel. The image from UAV then processed using Agisoft Photoscan and underwent geometric correction. The image containing red, green and blue (RGB) bands then segmented with multi-resolution algorithm. Four Vegetation Indices (VIs) namely Normalized Green-red Difference Index (NGRDI), Visible Atmospherically Resistant Index (VARI), Visible-band Difference Vegetation Index (VDVI) and Red-Green Ratio Index (RGRI) were used to develop rule sets for land use land cover (LULC) classification. Vegetation class was separated from LULC image to be further analysed with ArcGIS using information from ground truth observation. Final product is urban tree map containing tree names and LULC classes.
Split-windows algorithm (swa) methods using fractional vegetation cover (fvc) on landsat 8 oli/tirs
Authors: Nugraha A S A , Atmaja D M
Published: March 2021

Landsat 8 OLI/TIRS has the ability to generate Land Surface Temperature (LST) with band 10 (10,60 - 11,19 µm) and 11 (11,50 - 12,51 µm). That condition has led to the development of methods for Landsat 8 in LST processing. The SWA has various methods of extracting LST, one using FVC. This research aims to establish the level of accuracy of using FVC methods on SWA methods to ground temperature. LST method is a combination of NDVI and water vapor derived from MODIS Terra. SWA-FVC processing shows a difference between data processing with field conditions. A difference indicated is 2°K (two-degree Kelvin) for urban areas with checks is the road and rooftop. Furthermore, 1°K (one degree Kelvin) for vegetation with middle covered until the high cover of the canopy. SWA-FVC methods have a focus on vegetation index with a similar value of emissivity and can’t to reflect the actual condition of various land-use in the field. LST extraction with SWA-FVC methods proved vegetation index can’t optimum to using for emissivity values for detection LST in the field.
Mobile gis app for guiding geopark at unesco global geopark ciletuh palabuhanratu, indonesia
Authors: Darsiharjo  , Arrasyid R , Urfan F , Ruhimat M , Setiawan I , Logayah D S
Published: March 2021

This study aims to produce a mobile GIS application as a spatial data-based information media for the geopark area at UNESCO Global Geopark Ciletuh Palabuhanratu in a more exciting and informative way. The development process is by Analysis, Design, Development, Implementation, Evaluation (ADDIE). This application offers navigation, interpretive information, digital maps, offers guide route selection for users, geopark areas, geographical diversity, biodiversity, cultural diversity, tourist destinations, and tourist itineraries. In testing using a drawn questionnaire, the system conclusions made by users are asked to be interested in the application.
The order in the social system based on the kinship relationship and the hamlet’s founder of ethnic besemah south sumatera
Authors: Purnama D H
Published: March 2021

This paper aims to analyze the social order of Besemah Ethnic based on the kinship relationship with the hamlet’s founder in South Sumatra. These relations affect the status and role of individuals in the social system and the arrangement of settlement patterns. The research method used is the design of qualitative verificative. The approach used is the cultural interpretation and Levi-Strauss structuralism. The results of the study show that there is two social classifications system of Besemah ethnic, that is jeme mestautin (native people) and jeme datangan (comer), that differentiated by the consanguineal relation with the hamlet’s founder. This system has implications to the status and role that individuals must play in the kinship system and a broader system social organization, including their rights and obligations by the prevailing values and norms. This system also affects the orientation of the house layout and arrangement of settlement patterns. The house of hamlet’s founder becomes the centre of the direction of other dwellings, thus forming a unity of local life based on genealogical ties. This study shows too that the living traditions of Besemah ethnic always maintain harmony between the social environment and the natural environment.