bluuebunny/crossref_metadata_2025 huggingface dataset:
Rapid fabrication of gelatin-based scaffolds with prevascularized channels for organ regeneration
Authors: Hu Qingxi , Tang Haihu , Yao Yuan , Liu Suihong , Zhang Haiguang , Ramalingam Murugan
Published: March 2021

One of the biggest hindrances in tissue engineering in recent decades has been the complexity of the prevascularized channels of the engineered scaffold, which was still lower than that of human tissues. Another relative difficulty was the lack of precision molding capability, which restricted the clinical applications of the huge engineered scaffold. In this study, a promising approach was proposed to prepare hydrogel scaffold with prevascularized channels by liquid bath printing, in which chitosan/β-sodium glycerophosphate served as the ink hydrogel, and gelation/nanoscale bacterial cellulose acted as the supporting hydrogel. Here, the ink hydrogel was printed by a versatile nozzle and embedded in the supporting hydrogel. The ink hydrogel transformed into liquid effluent at low temperature after the cross-linking of gelatin by microbial transglutaminase (mTG). No residual template was seen on the channel surface after template removal. This preparation had a high degree of freedom in the geometry of the channel, which was demonstrated by making various prevascularized channels including circular, branched, and tree-shaped networks. The molding accuracy of the channel was assessed by studying the roundness of the cross section of the molded hollow channel, and the effect of the mechanical properties by adding bacterial cellulose to the supporting hydrogel was analyzed. Human umbilical vein endothelial cells were injected into the aforementioned channels which formed a confluent and homogeneous distribution on the surface of the channels. Altogether, these results showed that this approach can construct hydrogel scaffolds with complex and accurate molding prevascularized channels, and hs great potential to resolve the urgent vascularization issue of bulk tissue-engineering scaffold.
Reduction in human activity can enhance the urban heat island: insights from the COVID-19 lockdown
Authors: Chakraborty TC , Sarangi Chandan , Lee Xuhui
Published: March 2021

The COVID-19 lockdowns drastically reduced human activity, emulating a controlled experiment on human–land–atmosphere coupling. Here, using a fusion of satellite and reanalysis products, we examine this coupling through changes in the surface energy budget during the lockdown (1 April to 15 May 2020) in the Indo-Gangetic Basin, one of the world’s most populated and polluted regions. During the lockdown, the reduction (>10%) in columnar air pollution compared to a five year baseline, expected to increase incoming solar radiation, was counteracted by a ∼30% enhancement in cloud cover, causing little change in available energy at the surface. More importantly, the delay in winter crop harvesting during the lockdown increased surface vegetation cover, causing almost half the regional cooling via evapotranspiration. Since this cooling was higher for rural areas, the daytime surface urban heat island (SUHI) intensity increased (by 0.20–0.41 K) during a period of reduced human activity. Our study provides strong observational evidence of the influence of agricultural activity on rural climate in this region and its indirect impact on the SUHI intensity.
A long-term intelligent operation and management model of cascade hydropower stations based on chance constrained programming under multi-market coupling
Authors: Lu Jia , Li Gang , Cheng Chuntian , Liu Benxi
Published: March 2021

Under the medium- and long-term electric markets, cascaded hydropower stations face a series of practical challenges due to the uncertainty of inflow and market price. For long-term dispatch scheduling, the allocation of power generation in multimarkets is critical, including clean energy priority consumption market, inter provincial market and intra provincial market in order to maximize the operator’s expected revenue and reduce the market operation risks. Based on the hydro-dominant electricity market structure and settlement rules, we propose a long-term optimal operation method for cascade hydropower stations considering the uncertainty of multiple variables. First, a seasonal autoregressive integrated moving average model is used to handle the time-varying and seasonal characteristics of inflow series by using a copula connect function to fit the joint distribution of the monthly inflow, the clearing price of the intra provincial market and the delivery volume of the inter provincial market. Then, uncertain chance-constrained programming is established. Finally, a developed particle swarm optimization algorithm embedded in a Monte Carlo simulation is solved for hydropower operation policies, and the maximum revenue, resource allocation and scheduling strategy are obtained under the corresponding risk tolerance. Taking the actual data of cascaded hydropower stations in Yunnan Province, China, as an example, a simulation analysis is carried out. The results show that the proposed method can reasonably describe the uncertainty and correlation between the variables, realizing the optimal allocation of resources among multimarkets, and provide references for the long-term optimal operation of cascade hydropower stations in a multimarket environment. The results also show that the decision strategies should be determined considering the decision-maker’s risk preference.
Potentials of continuous Markov processes and random perturbations
Authors: Yang Ying-Jen , Cheng Yu-Chen
Published: March 2021

With a scalar potential and a bivector potential, the vector field associated with the drift of a diffusion is decomposed into a generalized gradient field, a field perpendicular to the gradient, and a divergence-free field. We give such decomposition a probabilistic interpretation by introducing cycle velocity from a bivectorial formalism of nonequilibrium thermodynamics. New understandings on the mean rates of thermodynamic quantities are presented. Deterministic dynamical system is further proven to admit a generalized gradient form with the emerged potential as the Lyapunov function by the method of random perturbations.
An overview of depositional environment between the mountains of southern java and the fold mountain of north java
Authors: Negara L P , Lestari D , Kurnianto F A , Ikhsan F A , Apriyanto B , Nurdin E A
Published: March 2021

This study aims to analyze the landform of South Java mountainous and folded mountains in northern Java based on the depositional environment context. The method used in this study is a survey. The research locations for the mountains of southern Java include Kebumen, Gunungkidul , and Wonosari regions. The research location in the northern mountains of Java includes the regions of Sragen and Grobogan. The results showed a difference in depositional environment between the two landforms. The southern Java mountains are formed in continental depositional environments, while the northern Java mountains are formed in the transition depositional environment and shallow marine depositional environment.
Mapping geomorphological environments of bendo watershed ijen mountain, banyuwangi east of java
Authors: Bachri S , Sumarmi  , Irawan L Y , Fathoni M N
Published: March 2021

Geomorphology is a comprehensive landscape study that reviews a space from the aspects of morphology, chronology, arrangements and processes. Accompanied by observation and field validation, the rapid development of remote sensing technology greatly helped the geomorphological mapping process. This research is aimed at geomorphological mapping of the Bendo Watershed area which can then be used as a basis for various spatial studies. The hybrid approach and on screen image interpretation (OSII) method on DEM data, optical satellites, and lithology units was carried out to obtain morphological, morphochronological and morphoarrangement information, while morphoprocess information was obtained through field observations. Sixteen units of landforms have been successfully mapped consisting of the origin of volcanic and fluvial processes with upstream morphological characteristics in the form of slopes of the Ijen Complex and downstream in the form of fluvial plains. Overall surface material is a product of volcanoes in the upstream area with a process of erosion and dominant landslides. Mapped landform units can be a unit of analysis and basic information for regional planning studies, land evaluation, and disaster.
Ecological value of soil organic matter (mandala customary forests with awiq-awiq management)
Authors: Mutia T , Sumarmi  , Bachri S , Subhani A
Published: March 2021

The current ecological value has become a global trend that can be used as a reference in conservation. Soil is one of the parameters of the ecological value that stores organic matter (SOM) consists of organic elements C, N, P, and K contributing to the biogeochemical cycle. The purpose of this study is to determine the ecological value of soil organic matter in Mandala customary forests that is managed by using awiq-awiq. Data on soil organic matter content was carried out in the customary forests of Mandala, Bayan, West Nusa Tenggara, Indonesia. Soil samples taken at five points based on the height of 310-350 masl. Measurements were carried out directly and indirectly, using soil physical and chemical laboratory tests. Lab test results were then analysed using a cost-based approach to determine their ecological value. The results showed ecological values based on C, N, P and K (SOM) content of land contributed around 5609.74 USD / ha or 78,990,748, 9 IDR / ha and 5830.82 USD / ha or 82,103,776.4 IDR / ha. This value is an award given to Mandala customary forests in protecting SOM to maintain a biogeochemical cycle in forest ecosystems. However, it’s protection requires sustainable forest management.
Travel time efficiency for students to school in bandung regency
Authors: Badriyah O , Ruhimat M , Setiawan I
Published: March 2021

School selection is currently one of the considerations for parents and students in the use of time. Moreover, the determination of the current school associated with the zoning system organized both from elementary to high school that allows school to consider 80% of students who come from the nearby location. Essentially in determining the school is able to streamline, time and mileage for students, but the factors in efficiency was influenced by many things and was out of school by location determination.The purpose of this study was to determine the existence of SMP current location to the efficiency of travel time to get to school students. The research was conducted in Bandung regency, West Java Province. The population consists of the population in this region is the school and the student population. Samples region, using random sampling and selected 31 schools. As for determining the sample of respondents using stratified sampling technique with this type of sampling disproposional. The method used is descriptive quantitative. Collecting data using a questionnaire. The results showed that the overall time taken students can said to be efficient because the data shows that the travel time spent by students to go to school fairly evenly.
Development of Municipal Settlement with The Application of The Ecovillage Concept
Authors: Wibawa W
Published: March 2021

Slum settlement is one of the problems that can arise in a city / district. The village of Bojongsoang, Bandung Regency, is one of the regions facing the problem of slum growth. The factors that caused the slum of settlements in Bojongsoang Village were due to excessive activity, which caused the residential environment to be unhealthy and uncomfortable to live in. With this problem the community took the initiative to conduct the ecovillage program as a solution to overcome the problem. The formulation of the problem used is “How to apply the concept of ecovillage in Bandung Regency?". The ecovillage concept is a settlement arrangement concept that uses sustainable principles by prioritizing environmental aspects and integrating social, economic and cultural dimensions. To improve the quality of slums into a growing settlement. The research method, which is used is a qualitative research method with a literature study approach, comparative study, and object observation. The analysis in this study was carried out by comparing the results of object observations with literature studies. The results achieved in this study prove that to regulate slum areas can be done by means of rejuvenation of settlements, so that it is expected to produce sustainable and ecological settlements.
Impact of infrastructure development jalur jalan lintas selatan (jjls) in Yogyakarta to change in land price
Authors: Edy H , Baiquni M , Triatmodjo B
Published: March 2021

The Southern Trans-Java Route (Jalur Jalan Lintas Selatan – JJLS) infrastructure development is a national program that goes through five provinces in the island of Java, namely the provinces of East Java, Central Java, Yogyakarta Special Region, West Java, and Banten. In Yogyakarta, the Southern Trans-Java Route (JJLS) cuts across three regencies, which are Gunungkidul Regency, Bantul Regency, and Kulonprogo Regency. This research selected locations in Jetis Village, Saptosari District, Gunungkidul Regency, Gadingsari Village, Sanden District, Bantul Regency, and Sindutan Village, Temon District, Kulonprogro Regency for its study. The aims of this research are to analyze price changes that occur. The research method employed in this study is the qualitative descriptive analysis method. The villages set as study locations were determined by purposive method and data collection was conducted through in-depth interviews with informants who understand the issues relevant to the research objectives. Based on the acquired study results, the highest change in land price took place in Sindutan Village. A significant increase in land price occurred.
Waste collecting point as the school of the waste management system
Authors: Ridha M , Rohmat D , Kastolani W
Published: March 2021

Waste collecting point is a communal waste management system with systematic sorting of waste at the source recommended by the Banda Aceh City Government to be applied to schools, namely the State Middle School 1 in Banda Aceh City. This study aims to determine the implementation of waste collecting points in an effort to overcome the problem of waste in schools. The method used in this study is the study of interviews, observations, research results, technical guidelines, journals, books, and government documents by analyzing data in a qualitative descriptive manner. The waste collecting point system is expected to be a system that will continue to be tested and developed through expert validation and limited testing. This system is useful for providing recommendations to schools in efforts to manage waste. Based on the results of the study that the implementation of waste collecting points as a waste management system has been running effectively but there are still several problems, namely the allocation of funds for the provision of facilities and infrastructure, garbage transport schedules, transportation officer errors, and lack of socialization by the city government.
Socio-economics and environmental impact of supit urang landfills capacity
Authors: Deffinika I , Rifdah Ananda B , Khairunnisa BA
Published: March 2021

This research aims to identify Supit Urang landfill’s impact towards Socioeconomic of the surrounding resident. Primary data collected by making a sample framework was determined by limiting the area within a radius of 1 Km from landfills. The number of samples in this research is 30 respondents, stratified in a range of 200 m. The Result shows that Supit Urang Landfill’s existence brings some environmental degradation, such as air, water pollution, excess of methane and avalanche. 37% of the study population experienced ARI as a former adaptation towards landfills existences, while 63% of them did not seek treatment. Clean water for consumption and sanitation of the surrounding population comes from wells. The presence of waste also produces methane that can be used as a household fuel.
Waste management at the UPI campus and campus citizen behaviour towards the management of zero waste
Authors: Setiawan I , Rohmat D
Published: March 2021

Campus should be the ideal model for the community in environmental management, especially in waste management and the behavior of campus residents. This role needs to be assessed in order to be able to achieve the zero-waste target. This study aims to review the conditions of waste and waste management on the UPI campus and the behavior of the campus residents as a study material towards UPI’s zero waste campus. The research method uses a survey method. Data collection techniques using observation, questionnaires and interviews. The results showed that waste management at UPI has not led to zero waste-oriented waste management. Availability of human facilities and resources still needs to be improved because the volume of waste exceeds the available facilities. The results also showed the behavior of UPI campus residents who were already quite good in disposing of garbages.
Feasibility study of microbial organic waste processing business in Sukasari district, Bandung city
Authors: Kastolani W , Darsiharjo  , Setiawan I , Supriatna U
Published: March 2021

Modern waste management systems must be carried out comprehensively and provide economic benefits. Many business opportunities for processing inorganic waste have been carried out such as recycling paper and plastic, while conventional organic waste is made into organic fertilizer / compost. The demand for organic fertilizer / compost is increasing along with the development of organic agriculture. This research was conducted to analyze the business opportunities of microbial organic waste which is a breakthrough in making compost fertilizer. The location of the study was conducted in Sukasari District Bandung City with the method used was descriptive method with SWOT analysis. SWOT analysis is used to analyze strengths, weaknesses, opportunities and obstacles in processing organic waste so that direction or recommendations are obtained. The stages are by analyzing IFE (Internal Factor Evaluation) and EFE (External Factor Evaluation) and strategy analysis using the SWOT matrix. Based on the results of the IFE calculation get a score of 3.25 and the EFE score gets 3.10. Strategy analysis based on the SWOT matrix includes the importance of increasing the quality and quantity of production, recruitment of workers, addition of land area and marketing using information technology.
Geography teachers perception toward spatial thinking teaching and learning
Authors: Dewi R P , Hermawan R , Fajariyah R A A
Published: March 2021

Spatial thinking can be thought through geography however to teach spatial thinking, geography teachers need appropriate knowledge and perception. The aim of this research was to know geography teacher perception about teaching spatial thinking through geography that viewed by gender. The geography teacher was a senior high school teacher with the consideration that spatial thinking has a deep connection with Geographic Information System (GIS) where GIS is given as geography subject materials to senior high school students. The data collection use a questionnaire to find out geography teachers perception about spatial thinking. The filled questionnaire then scored and analyzed using descriptive quantitative. The result showed that there was no significant correlation between gender and disposition to spatial thinking teaching and learning.
The effect of TPACK framework on inquiry process: a study of geographic subject
Authors: Yani A , Ruhimat M , Mulyadi A
Published: March 2021

The inquiry process constitutes one of the essential process in the learning process. Learners gain knowledge through the inquiry process to build knowledge of the information received. Teachers remains searching for the most effective learning strategy, so that students are motivated for the inquiry process. This study discusses the use the Technological Pedagogical Content Knowledge (TPACK) in the Geography learning process in high schools. The method is a quasi-experiment in the Geography learning process which was designed based on the TPACK framework to determine its effect on the inquiry process of students. The result shows that Geography learning process using TPACK framework affects the inquiry process as seen by the quality of questions raised by students. Based on the result, it can be concluded that student-involved learning process provides many opportunities for students to conduct inquiry process.
Develop Critical Spatial Thinking by Utilizing Local Landscapes: Geography Field Laboratory Studies
Authors: As’ari R , Maryani E , Rohmat D , Nandi
Published: March 2021

Geographical skills that need to be shared by each geographic are three categories, including map skills, field skills, and satellite image interpretation skills. To achieve field skills competency, a location is needed to be used as material for practicum studies for each subject. The Geography Education Field Laboratory can be studied in depth based on an analysis of the level of learning needs. The basis of the lab location requirements as a laboratory is seen from the laboratory function as an area to carry out careful and accurate testing and measurement of the phenomenon under study. Local landscape can be used as a field laboratory to improve critical spatial thinking skills. The study was carried out through the identification of local landscapes by delineating the area through the utilization of satellite imagery and identifying potential from each area that was chosen descriptively. Location characteristics to be used as locations for geography learning resources can describe geographical concepts, local landscapes, and regional phenomena.
Knowledge and participation of geography teachers toward flood disaster risk reduction in sampang indonesia
Authors: Putra A K , Sumarmi  , Irawan L Y , Deffinika I , Fahmi A , Tanjung A
Published: March 2021

Floods occur in Sampang Indonesia every year, due to overflowing Kemuning rivers and rising sea levels during spring tide. The morphological conditions which are hills in the middle and syncline valleys in the south with trellis flow patterns with weak and resistant bedrock exacerbate Sampang conditions. This condition increases the threat of urban flooding and rob flooding. One of strategic effort is to know the characteristics and reduce the threat of flooding through Geography subjects in school. Geography teachers as responsible people, act as facilitators and informers who provide knowledge and shape students psychology about flood disasters. Knowledge and participation of geography teachers are very important in flood disaster risk reduction because the teachers are a source of knowledge that is trusted by students. This is a survey research with univariate and multivariate analysis using a quantitative descriptive approach (single frequency and crosstab). The researcher also used inferential analysis in the form of chi-squared to see the relationship of the variables of knowledge and teachers participation in Sampang District. The results of the study indicate that there is a relationship between teachers knowledge and participation in flood disaster risk reduction presented in the learning process. The analysis results show the probability value or Asymp Sig 0.034. so that the knowledge of the geography teachers is very influential.
The influence of teachers pedagogic competence on cognitive loads of students in the geography learning process
Authors: Bahari R , Rohmat D , Nandi
Published: March 2021

Abstrak

This research is a case study about the effect of students’ cognitive load in the process of learning geography in the city of Bandung. The purpose of this study is (1) how the pedagogical competence of geography teachers in the city of Bandung, (2) the cognitive load of students, and (3) know the extent of the influence of teacher pedagogical competence on the cognitive load of students in the learning process of geography. This study uses a survey method, with a quantitative approach. The sample in this research were 8 high schools in Bandung. The results showed the pedagogical competence of geography teachers included in the competent category, even though the cognitive load of students in the learning process of geography included in the low category and the pedagogical competence of teachers gave influence on the cognitive load of students by 74%. The conclusion is a good teacher’s pedagogical competence can reduce students’ cognitive load and cognitive load is formed due to the influence of the learning methods and strategies provided by the teacher.
Geographical inquiry skills on implementation of participants at geography in high school at bandung city
Authors: Irawan R A , Maryani E , Ruhimat M
Published: March 2021

Geography learning aims at interacting, interpreting and analyzing spatial and environmental patterns carried out by various learning models and methods, this is also inseparable from a geography teacher who acts as a facilitator in the classroom. While geography learning is not just allowing children to search for themselves material knowledge of geography, but each student must able to collaborating learning both individually and in groups. This study uses descriptive quantitative survey methods. The samples in this study were geography teachers in public high schools in Bandung, totaling 21 schools and 35 teachers. The implementation of the geographical inquiry conducted by 35 teachers is 76.57%, the which means that in phases and systematically the teacher has Carried out the steps listed in the geographical inquiry indicator. A geographical inquiry has an influence on geography skills in educators, especially high school students. The influence can be in the form of implementation by the teacher so that students have the skills to make-geographic questions, think critically and realistically, and manage geographic information.
Outdoor learning method as an effort to improve the spatial thinking skills of students of geography teachers candidate in university of pgri palembang
Authors: Asiyah S , Rosita L , Utomo B
Published: March 2021

This study aims to analyze the application of the Outdoor Learning Method in improving the spatial thinking skills of Geography Education students at the Palembang PGRI University on location and condition indicators. The research method used was Classroom Action Research. The subjects in this study were 27 students of geography education. The results of the analysis of research data indicate that the Outdoor Learning Method can improve students’ spatial thinking skills at the concept of location which consists of two aspects, namely conditions and connections. This can be seen from the percentage of spatial thinking ability test results in the first cycle that got above 76 as many as 59.26% or 16 students. Whereas in the second cycle, the students got above 76 were 74.07% or 20 students. As a result, there was a significant increase from cycle I and cycle II of 14.81%. Thus, it can be concluded that the environment outside the classroom is a substantial source of learning and is a very important source of learning, especially to improve spatial thinking skills.
Development of Interactive Multimedia for Earthquake Disaster Preparedness in Elementary School
Authors: Mardani A , Suryani N , Ahmad N
Published: March 2021

This research study aimed at produce interactive multimedia as a learning medium for earthquake disaster mitigation in the face of earthquake disaster in a more interesting and fun way. The development process was examined according to the Analysis, Design, Develop, Implement, Evaluate (ADDIE). This produce interactive multimedia has a video about the simulation of earthquake and earthquake mitigation video of 3 stages that is before, during and after earthquake. In expected can be providing basic safety information and improve preparedness against earthquake disasters for elementary school student.
Gender perspective: the spatial thinking of secondary education students
Authors: Mulyadi A , Yani A
Published: March 2021

Spatial thinking is defined as an inseparable aspect of geographical skills, the ability to make decisions from a set of choices of environmental conditions related to the needs of life. It is assumed that gender has a relationship with the geographical way of thinking of a person. Male and female have different perspectives on each decision making to assess and choose space both on the scale of rooms and on the surface of the earth. This study aims to determine the differences in spatial thinking based on gender in junior high school and senior high school students. The method used is descriptive. The data were collected through testing technique. The result shows that the correlation coefficient between gender and spatial thinking is not significant, but in some or certain cases there seems to be a slight difference. Men are more likely to think pragmatically about various situations that will occur in a narrow space and time, while women are more anticipatory in broader dimensions of time and space, such as time differences in various cities, season changes, and predictions of space threatened by natural disasters.
The comparison of the attitude of caring to the environment among the student of adiwiyata school and non adiwiyata school
Authors: Furda M , Sudiyanto  , Yusup Y
Published: March 2021

The Adiwiyata program is a program for realizing the school cares and cultured environment. Carried out based on the principle of educational, participatory, and sustainable. Interest Adiwiyata program to increase the capacity of the school to realize Adiwiyata school or schools concerned and cultured environment. The problem Adiwiyata school program do not necessarily have an attitude of care for the environment. Based on the description, the purpose of this study was to analyze the caring attitude of students to the school environment. The method used in this study are descriptive qualitative. The results of the study show that 1). In adiwiyata schools students’ environmental care attitude is 72%, 2). Non adiwiyata school students have 70% environmental care attitude. The difference in the attitude of caring for the students in adiwiyata and non adiwiyata schools is not much different.
Indexing environmental sustainability literacy knowledge among malaysian youth: confirmatory factor analysis approach (cfa)
Authors: Norkhaidi S B , Mahat H , Hashim M , Saleh Y , Nayan N
Published: March 2021

An index is one of the approaches to measuring behaviour and is commonly used in economics and social sciences. Therefore, this study aimed to investigate the key factors for indexing environmental sustainability literacy knowledge among Malaysian youth using exploratory and confirmatory analyses. Respondents consisted of 100 Malaysian youth who were selected using a simple random sampling technique. A questionnaire using a Likert scale was used to get the responses. The results show that study items achieved acceptable reliability with Cronbach Alpha values for each variable greater than .70 and meet the test of normality. Then, the data obtained were processed through an exploratory factor analysis (EFA) to observe the factor structure of environmental sustainability literacy knowledge. Next, a confirmatory factor analysis (CFA) was also conducted to validate the accumulated variables. In conclusion, the findings from both analyses have identified and validated the four key factors in Malaysian youth environmental sustainability literacy knowledge, namely lithosphere, hydrosphere, atmosphere, and biosphere. The findings also indicate that a fit indices value is in compliance with the terms set forth. Therefore, the four factors set out should be emphasized in the construction of instruments for indexing environmental sustainability literacy knowledge among Malaysian youth.
Learning of disaster mitigation through problem based learning method in senior high school
Authors: Azis I S , Sugandi D , Setiawan I
Published: March 2021

In Indonesia, disaster education in schools is now very necessary because of Indonesia’s geographical location which is in the ring of fire. However, learning activities in the classroom appear to be passive because the teacher’s role tends to be most dominant while the role of students is limited. Learning will be more effective when students are more directly involved than just passively accepting material from the teacher. The purpose of this study was to determine the application of Disaster Mitigation Learning Through Problem Based Learning Methods in High Schools. The method in this research is the study of literature. Problem Based Learning (PBL) is a method characterized by utilizing problems that occur in the real world to train students to think critically and skillfully in solving problems. Disaster mitigation that prioritizes phenomena around students will provide comprehensive knowledge. Therefore, material content that prioritizes phenomena will be suitable if taught using problem-based learning methods because students are expected to be problem solvers related to disasters.
Soil properties under four different land uses in relation to soil erosion and conservation in Wanagama
Authors: Kusumandari A , Purwanto R , Widayanti W T
Published: March 2021

Although the parent material of the study area is the same at all land uses, but when the plantation is different will result the different processes and development. In Wanagama where it was used to be highly degraded land, then it was rehabilitated. This research aimed to analyze the soil properties under Gliricidea, teak, crops and grass plantation. Also, aimed to relate the soil properties with soil erosion. Soil samples were taken from the field randomly at the four land use types with 3 replications, in addition for the grass land the soil samples were taken from the 3 location. Then, they were brought to the laboratory to analyze. This research shows that: the soil organic content varies from 2.61 to 9.78%; the permeability were classified as slow to very rapid; the bulk density and bulk particle density are also varies, that are 0.50 – 1.15 and 1.86 – 2, 20 respectively. Soil porosity ranges from 46.75 to 76.97 % which is considered as moderate to high. The soil texture are mostly clay with the clay content varies from 32.79 to 61.85%. The soil erodibility is considered as low to moderate with the K factor of 0.07 to 0.26. Soil properties has a very close relationship with the process inside the soil, especially related to the psychological processes or other process including erosion process.
Determination of slope susceptibility in hydrothermally altered rocks region with a case study in wonotirto district, blitar regency, east java province, indonesia
Authors: Idrus A , Masti S D , Azizi R R
Published: March 2021

The significance of slope susceptibility study in hydrothermally altered area is to determine which area that geological landslide hazard is potentially occurred. This study is aimed to develop a geological hazard map based on overlaying of slope data and types of hydrothermal alteration, with the case study in Wonotirto district, Blitar regency, East Java province. Wonotirto district lies on a high topographic terrain covered up by hydrothermally altered volcanic rocks. To achieve these aims, this study was performed a suite of research methods, which are conducted through four work stages including geological mapping and slope observation, sampling, laboratory analysis and data interpretation. Slope data measurement is based on DEM data and verified in the field. Laboratory analyses consist of petrography, XRD (X-Ray Diffraction) and geomechanical properties analysis for the representative samples. The hydrothermal alteration occurred in study area consists of 4 (four) alteration types i.e. silicification, advanced argillic, argillic and propylitic alteration. Overlaying of slope data, geomechanical properties of rocks and the provided alteration map by using ArcGIS software leads the determination of slope susceptibility of the area. The area covered by extensive argillic-altered rocks shows highest slope susceptibility. On the map, the high slope susceptibility places on the northernmost sector of the study area. Meanwhile, the moderate slope susceptibility area occupies the central part of the map and the southernmost part has the lower slope susceptibility. Argillic altered rocks contain abundant clay minerals such as smectite and illite. Smectite, particularly, is a clay mineral type which has high swelling potential index. The abundantly presence of the clay minerals in the altered rocks may trigger the formation of geological landslide failure/hazard in the region.
Community capacity in dealing with drought in gesi district, sragen regency
Authors: Prayogo G , Ahmad  , Nurhadi
Published: March 2021

This study aims to determine community capacity in terms of livelihood assets owned by families. Livelihood assets consist of human capital, natural capital, social capital, environmental capital and physical capital. This research was conducted in Gesi Village, Sragen Regency which consists of seven villages, namely Pilangsari, Tanggan, Slendro, Poleng, Blangu, Gesi, and Srawung villages. The data obtained were analyzed quantitatively and qualitatively by giving a score of 1 to 4 assuming the greater the score the greater the effect of an asset. To facilitate calculation and interpretation, the scoring results are converted on a scale from 0 to 10 then visualized in the pentagonal diagram of the asset. The results are the human capital in Gesi District is still low, sufficiently in natural capital, sufficiently in financial capital, sufficiently in physical capital and have a good social capital.
Analysis of embassy areas of disaster and disaster mitigation efforts in pesawaran lampung district
Authors: Nugraheni I L , Suhendro  , Suyatna A
Published: March 2021

A landslide disaster was a hydro meteorological disaster that occurred in Pesawaran District, Lampung Province. The purpose of this study was to analyze the level of vulnerability of landslides in Pesawaran District. The method used is descriptive method using the variable (parameter) Grade slope, rainfall, geology and land use. The analysis was done by overlaying using ARCGIS from 4 variables which then obtained land units and land units then weighed to get the level of landslide vulnerability with three class. The results showed that areas with low vulnerability were 13,963 ha (4.89%), moderate vulnerability was 175,297 ha (61.39%) and high vulnerability areas were 96,286 ha (33.72%). The dominant variable causing landslides is rainfall, slope and land use. Landslide mitigation that can be done is by providing information to the people living in Pesawaran District about which areas are high, medium, and low in the danger of landslides. Increasing public awareness about the dangers of landslides in their area, preparedness faces landslides with regard to conditions when high intensity rain falls, for people who live in steep slopes and are very steep, be careful and always alert to the danger of landslides. Increased public awareness to use dryland agricultural land to be used in accordance with its designation, do not plant crops that can actually cause a greater risk.
The analysis of landslide preparedness on senior high school students in karanganyar regency, central java
Authors: Ramadhan U K , Sarwono  , Muryani C
Published: March 2021

Preparedness is a part of the disaster management process. It is closely related to the risks emerged by disasters. Landslide is a routine disaster which always occurs every year in Karanganyar. The research is set to determine the preparedness of landslide of Senior High School students in Karanganyar. It is descriptive qualitative research using survey method in collecting data. The results reveal that the percentage of students who have good preparedness in facing landslide is still very low. It can be seen from the percentage, 25.5% of students are less ready and 21.8% of them are even not ready. Conversely, 3% of students are very ready and 18.8 of them are ready, while 30.8% of other students are almost ready. This case shows that the capacity of Senior High School students in Karangnyar is still very low in facing landslide which occurs almost every year in Karanganyar.
Vulnerability of society on earthquake disasters in kayangan north lombok
Authors: Wulan M H , Nurhadi  , Muryani C
Published: March 2021

The earthquake caused severe damage in North Lombok Regency. The impact of the earthquake was that there were many casualties and most of the residents’ houses suffered minor to severe damage and caused damage to public facilities available. Kayangan Subdistrict is one of five sub-districts located in North Lombok Regency and has the worst damage. This study aims to analyze the level of vulnerability of the community in Kayangan Subdistrict. The technique of collecting data is by observing, documenting, and interviewing relevant offices and stakeholders in Kayangan Subdistrict. Data analysis using qualitative descriptive. The results of this study show that the categories of household vulnerability in Kayangan Subdistrict can be divided into three groups, namely, among others: (1) Prosperous Groups, (2) Middle Groups, and (3) Poor Groups. Whereas when viewed from vulnerable age groups in Kayangan Subdistrict, the productive age group is more vulnerable when compared to the unproductive age group and the unproductive age group. The productive age group includes women and men aged between 15-64 years. In addition, if viewed from the socio-economic aspects this is very closely related to vulnerability analysis. When viewed from the socio-economic capital of the population in Kayangan Subdistrict, it has very good social and economic capital in meeting its needs after an earthquake. This greatly helps the community in fulfilling its life so that it can reduce socio-economic vulnerability in society. In addition, the role of the government in providing assistance in the form of earthquake resistant housing options also greatly helped the community in the recovery period following the earthquake.
Multi-ethnic communities adaptation to flooding in the north samarinda sub-district, samarinda city, east kalimantan province, indonesia
Authors: Anwar Y , Setyasih I , Ningrum M V R
Published: March 2021

Samarinda as the capital city of East Kalimantan is a city that has a fairly rapid growth and also a place for migrants which has caused the city to be inhabited by various ethnic groups. Samarinda City is a city that always floods every year. One area of Samarinda City which often floods is the North Samarinda Sub-district. This paper tries to explore how the adaptation of multi-ethnic immigrant communities to floods. Data collection techniques used the Rapid Rural Appraisal (RRA) method and interviews. The results showed that the overall adaptation carried out by the community in North Samarinda Subdistrict was to raise the floor of the house, build a house on stilts, and make dikes. The shape of the house on stilts is a form of adaptation of the Bugis and Banjar tribes while the Javanese, Madurese and Mandar tribes only raise the floor of the house and make dikes. Based on the knowledge of local wisdom or the customs given from the ancestors, none of the respondents possessed one, which was caused by the absence of flood experience in the original place or because of the influence of modernization.
Analysis of community resilience for the situation of earthquake disasters in gangga
Authors: Apriyatno  , Muryani C , Yusup Y , Nurhadi
Published: March 2021

Lombok earthquake in 2018 impacted on the material and affected the psychological victims of disaster. Therefore, it is needed efforts the community is able to survive, rise, and adjust to difficult conditions. Gangga District is one of the districts in the North Lombok Regency which was affected by the earthquake. This study aims to determine the level of community resilience in dealing with earthquake disasters. The research method used a descriptive qualitative. Data collection techniques by field observation, questionnaires, documentation, and interviews with the community. The analysis technique in this study is Connor-Davidson Resilience Scale (CD-RISC) which consists of 25 questions by distributing questionnaires. The results showed that the level of community resilience in Gangga subdistrict falls into three categories, namely the high resilience category in Gondang and Sambik Bangkol villages, the middle resilience category in Bentek and Genggelang villages, and the low resilience category in Rempek village. Given that the Gangga District is an earthquake-prone area, this research can be used as a reference to reduce the risk of the effects an earthquake. In addition, it is expected that the government, families and the community can increase resilience so that the community can live better in earthquake-prone areas.
Land and forest fire disaster management through the arboretum gambut and community empowerment of masyarakat peduli api (mpa) csr program pt pertamina (persero) ru ii sungai pakning
Authors: Purwanto W , Hidayat R , D Marcelino H , Widhagdha M F
Published: March 2021

This paper describes the efforts to resolve the smoke disaster caused by forest and peatland fires in Riau Province by PT. Pertamina RU II Sungai Pakning CSR program. This paper is an empirical study carried out in Bukit Batu District, Bengkalis Regency, Riau Province, Indonesia during the period 2017-2019. The findings presented in this paper include the mitigation of smoke disasters carried out by various parties including private institutions, one of which is CSR of PT Pertamina (Persero) RU II Sungai Pakning which develops Forest and Land Fire Mitigation programs based on Community Empowerment of Masyarakat Peduli Api (MPA) and makes Arboretum Gambut as environmental education program for the community. The research method is qualitative research. The result is with the PT Pertamina RU II Sungai Pakning CSR program in Bukit Batu district area didn’t have a land and forest fire in that period.
The concept of forest natural resources conservation on traditional dayak mualang community
Authors: Seli Y M , Rindarjono M G , Karyanto P
Published: March 2021

The current study aims to investigate: 1) the extent to which the community relies on forest natural resources, 2) community knowledge of the potential of natural forest resources 3) the concept of forest natural resources conservation for traditional Mualang Dayak community. This research is a qualitative research with descriptive approach. Sampling was done using the purposive sampling technique. Data collection techniques used are interviews and questionnaires with descriptive data analysis techniques. The results showed that: 1) the dependence of Dayak Mualang community on forest natural resources to meet their daily needs such as rice, water, animal protein, vegetables, and wood as a building material. 2) knowledge of the potential of forest natural resources owned by the community regarding the availability of forests for daily needs, forest products, the best seasons of the forest, and the best locations in the forest. 3) The concept of conservation of traditional dayak mualang community by applying the ethno-conservation concept, by using customary law as a rule in forest management, customary forests, and prohibited places in the forest.