bluuebunny/crossref_metadata_2025 huggingface dataset:
Spatiotemporal monitoring of rice crops in the covid-19 pandemic period for local food security using sentinel 2b imagery case ctudy: tasikmalaya city
Authors: Ridwana R , Al Kautsar A , Saleh F , Himayah S , Arrasyid R , Pamungkas T D
Published: November 2022

Rice crops (Oryza sativa L) is a very important food crop in Indonesia. According to data from the FAO (Food and Agriculture Organization), in 2015 Indonesia was in third place after India and China as rice producing countries in the world with a total production of 75.6 million tons. The depletion of land due to land conversion (conversion) is one of the factors causing the downturn in the agricultural sector in Indonesia today. The narrowing of rice fields does not have an impact on decreasing rice production but also at the stage of Indonesian society whose livelihoods are farmers. Data and information on the development of rice plants are very important as a database for the formulation of sustainable food crop agricultural policies mandated in the Law of the Republic of Indonesia Number 41 of 2009. In addition, the covid-19 pandemic which is now sweeping the world, requires the government to adopt large-scale social rights policies. It also needs to be assessed whether it has an effect on agricultural production. The use of remote sensing technology is an effective and efficient alternative for spatial and temporal estimation and monitoring in obtaining information on land cover for rice plants. Through multispectral image classification using guided classification (supervised classification), with the maximum possible possibility (maximum likelihood), it is known that local food security in Tasikmalaya City during the COVID-19 pandemic is still guaranteed. This is with the current population of not less than 808,506 people, while the land cover area for rice crops consecutively from 2017 - 2020 are 454 ha; 606, 94 ha; 463, 23 ha; and 673.8 ha. So it can be denied that large-scale rebels have no effect on the productivity of agricultural land in Tasikamalaya City.
Influences of farmer group institution on agricultural land use change in ciwidey agropolitan area, bandung regency, west java
Authors: Fikri G I , Setiadi H , Restuti R C , Indratmoko S
Published: November 2022

In the cycle of human development, as technology advances, human will progress to the more efficient economy. Thus, primary economic activities like agriculture would slowly reduce in number and shifted into secondary and tertiary activities. The Ciwidey Agropolitan Area is a region which currently being developed as an agriculture-focused economy which also undergoes an agricultural tourism development as its complement and new form of secondary and tertiary economic activities. The region had long serving agricultural activity and agricultural institutions with a form of farmer groups with various horticulture products since 1979. While the land use change here occurs from various conditions, the institutions which had a strong relation to land could affect the land use activities. Looking at its role both as an agropolitan center and agrotourism destination, it is interesting to understand how the farmer groups system in the region, tightly related to the land and how it might affect the agricultural land use. The research aims to understand how farmer groups affect agricultural land uses. By using a spatial-qualitative approach which rely on verbatim data, the study concluded that the farming group had a tendency to produce a resistance activities against land use change. As more effective systems and rules implemented in a farming group, its agricultural land vulnerability would also be lower. Thus, the agricultural land vulnerability pattern follows the condition and effectivity of related area’s farmer group.
Coastal communities mobility pattern around mangrove ecotourism sukakerta village, cilamaya wetan, karawang regency
Authors: Sakina N C , Handayani T , Susiloningtyas D
Published: November 2022

Sukakerta Village is a coastal area located in the north of Karawang Regency. Its location on the coast makes people dependent on coastal natural resources for their lives. In this village there is a new mangrove ecotourism that has the potential to be utilized by the surrounding coastal communities. Coastal communities in this study are divided into two age groups, namely the younger generation and the older generation. This research will describe the mobility of coastal communities in carrying out daily activities that are divided into these two generations. The mobility includes the activities and the time used. The method used in this study is a qualitative method. Data was collected by conducting interviews with coastal communities around ecotourism. The results of this study indicate the mobility of diverse coastal communities but still related to the coast one of them is by utilizing the mangrove ecotourism. The younger generation has a wider space for mobility, while the older generation has a narrower space for mobility. Therefore, the conclusion of this study is that mobility is influenced by the age and ability of the individual itself.
Political contestation of public space on local community
Authors: Rahmadani D , Setiadi H , Nurlambang T
Published: November 2022

Contestation of public space is now used as further option due to the lack of land availability caused by the increasing demand for space. The presence of a public space provides various benefits for social, economic and political lives in society. Politics in this study is about power in the micro-scale formed by local actors. The space is used by local actors who have certain interest which cause a conflict of space or contestation for the existence of social identity. Banjir Kanal Timur (BKT) is one of the public space that is contested by several actors such as government, street vendor and ruler figures. The purpose of this research is to see how local actors use results from space contestation for their interests’, especially in maintaining social identity from existence, extending their territory, and exploiting available resources. This is a qualitative research which use field observations, in-depth interview, and description analysis. The results show that political space in Banjir Kanal Timur not only marked from the activities and matters but also communication. This condition gives birth to negotiation, space formation, and deals in it. Banjir Kanal Timur divided into several zones that have their rulers. These zones are marked by signs such as installing banners, pegging with community flags, and also establishing posts and large meeting place in the area
Seafood of java sea: gebang mekar tourism village as a case study for culinary destination in coastal area of cirebon west java
Authors: Pratiwi I I , Fitriyani E , Suwandi A
Published: November 2022

The vast Indonesian sea provides abundant marine resources such as seafood. In addition to it, Indonesia also has an enormous coastline that can be utilized for tourism activities. Java sea in north Java Island has become a source of fishermen in Indonesia since 15 centuries, Gebang Mekar Village located in Cirebon, the northern part of Java Island has been stated by the local government to become a pioneered tourist destination for marine tour cultural activities and also for its culinary delicacy especially for seafood dishes. This study aims to analyze the potency of Gebang Mekar and its relations with Cirebon culture, and also having foodscape analysis finding how local the component of ingredients in its recipe. This study finds that Gebang Mekar has many kinds of seafood, especially for crabs, shrimps, squids, and seashells. And it suits with Cirebon local seafood recipe that has more than 16 seafood recipes. We trace the ingredient from the local recipe and analyze the foodscape and finds that most of the ingredients come from the local Cirebon and neighboring regions inside West Java. Only one ingredient (garlic) that to fulfill the quantity needs, should be imported from China. To support Gebang Mekar as a seafood culinary tourism destination there still plenty of tasks to do, such as local people empowerment by giving them some workshops in seafood restaurant management.
Internalization of green moral community of kuta village ciamis regency
Authors: Nugraha D M , Praja W N , Azis A , Gumelar A , Hyangsewu P
Published: November 2022

Global warming occurs resulting in environmental damage, such as floods, forest fires, landslides, and droughts. Global warming can be reduced by public awareness of the efforts to safeguard and preserve the environment. This research aims to study and analyze the internalization efforts of green moral that is done by Village Kuta Ciamis District in order to preserve the environment. Kuta Village people have been awarded the National level Kalpataru Award in 2002 with the surrender of awards delivered directly by the president in Bali. Approach in research conducted using qualitative approach and case study method by conducting an in-depth interview on the informant. The result of this research is the community of Kuta Village Ciamis Regency has internalization activities of green moral through the implementation of the traditional ceremony Nyuguh. The conclusion of this research is internalizing green moral community of Kuta Village Ciamis through the implementation of traditional ceremony Nyuguh has an ethics in the efforts of environmental preservation based on the value of divinity, social value and cultural value. Society and the environment must coexist to create a harmonious world condition.
Pemali as defense ecovillage values in kampung kasepuhan babakan lama
Authors: Rozak R W A , Kembara M D , Parhan M , Budiyanti N , Hadian V A , Islamy M R F
Published: November 2022

The exploitation of the environment occurs because there is an economic value that is generated for the benefit of humans. A damaged environment can cause a lot of harm to humans in the future. The research objective was to analyze and synthesize the concept ofpemaliin Kampung Kasepuhan Babakan Lama with the ecovillage values that were maintained in the village. Then analyze the environmental conservation model scheme applied in Kampung Kasepuhan Babakan Lama. A descriptive qualitative approach is used in research using interview instruments. The interview resulted in the findings that environmental conservation efforts carried out in Kampung Kasepuhan Babakan Lama are in accordance with ecovillage values. Environmental preservation is closely monitored by every community who lives in the village and implanted the concept of using the environment wisely through the concept ofpemali. Pemaliis applied in the socio-cultural, environmental, economic, architectural, and spiritual aspects. This is identical to ecovillage values. Thus, society and nature can coexist in harmony. This is what is starting to disappear in the current paradigm of environmental use, namely that only humans benefit without paying attention to environmental sustainability.
Indigenous knowledge values of bahuma as a preservation of the national culture of indonesia
Authors: Hastuti K P , Arisanty D , Rahman A M , Angriani P
Published: November 2022

Preservation of culture in the life of modern society today is something that deserves the attention of all parties, especially the local culture that contains the noble values of the Indonesian nation. The effect of globalization if it is not balanced with the readiness of the people is feared it will create a borderless world. The limited readiness of the community in the regions to face the era of globalization makes the lack of preventive measures that can be taken to prevent borderless world shocks. One effort to deal with the negative impact of globalization is to use indigenous knowledge values as a force. This study aims to explore and identify indigenous knowledge values of bahuma that’s owned by the Banjar Tribe farmers as an effort to preserve culture to face the negative effects of globalization. This research uses a qualitative method with ethnographic approach. The subjects in this study were the Banjar tribe farmers. Data analysis was performed using the Miles & Huberman interactive analysis model. The results showed the values of local wisdom bahuma Banjar Tribe include: religious, kerja keras (hard work), patang menyerah (never giving up), tanggung jawab (responsibility), peduli terhadap lingkungan (caring for the environment), gotong royong (mutual cooperation), tidak menyakiti (not hurting), kebersamaan (togetherness), berbagi (sharing), sabar (patience), ikhlas (sincerity), kekeluargaan (kinship), and adaptation value.
Factor analysis and consensus contributing to undergraduate students’ ecoliteracy on disaster risk reduction
Authors: Rahma A , Mardiatno D , Hizbaron D R
Published: November 2022

Ecoliteracy implies a holistic understanding of the relationship between environment and disaster. Strengthening ecoliteracy in educational institutions is the first step in building disaster-aware communities. This pilot study aims to explore the perspective of students’ ecoliteracy on disaster mitigation while examining the set of Q statements as research instruments. This study applies the Q methodology since it has components that can measure the diversity of human subjectivity. Fourteen undergraduate students at the Faculty of Geography, Universitas Gadjah Mada, were selected as participants. The results construct five factors and two consensus statements with a cumulative variance percentage of 68%. These factors are (1) knowledge (ecology and environmental problems), cognitive, and behavior factors; (2) knowledge (environmental and social-political problems), cognitive, and behavior factors; (3) affect and knowledge factors; (4) affect, cognitive and knowledge factors; and (5) knowledge factor. The consensus consists of two statements in agreement. As this study is still in a pilot stage, research only focuses on interpreting qualitative analysis results. The procedure for quantitative data is not presented in this paper.
The Kadu Lexicon local wisdom of geographic’s toponymic at Pandeglang Regency, Banten Province
Authors: Afidah N N , Kosasih A , Damayanti W , Hamidah S , Nugraha R H , Rizkyanfi M W , Fuadin A
Published: November 2022

Kadu lexicon is a form of language phenomenon as a product of cultural development that is unique. The lexicon of kadu is found of geographic’s toponymic at Pandeglang Regency, Banten. The development of toponymy at Pandeglang can never be separated from various aspects or various geographic phenomena that are present behind the name of the place, because the naming of the place is based on the experience and considerations of the community as cultural actors. This study aims to describe: (a) the use of kadu lexicon in geographic’s toponymic with socio-cultural conditions at Pandeglang Regency. Analytical description becomes the method in this study with written data sources and oral data sources. From the results of the study found toponyms at Pandeglang Regency using kadu lexicon, which is 47. Of all the toponyms there are 12 categorizations based on words that follow kadu lexicon and 4 groups of elements forming geographic toponymic words at Pandeglang Regency.
Disaster mitigation through comic moral dilemmas for elementary school students
Authors: Warlim  , Fitria R , Hakam K A , Nurbayani S , Supriatna A
Published: November 2022

The number of casualties in the series of earthquakes so far shows that disaster mitigation is still in the weak category. Earthquake and tsunami experts from a number of countries appealed to Indonesia to learn from the recurring disasters that claimed thousands of lives. Given that Indonesia is prone to disasters, early disaster awareness education is needed to minimize the impact of disasters. Disaster management through disaster education and mitigation aimed at reducing disaster risk must become the main stream of development. The formal education sector is considered to be the most effective in dealing with the impact of disasters. One alternative to disaster awareness early education is to disseminate disaster mitigation. Overall, this research was conducted through a research and development method which was carried out in several stages, namely the exploration, formulation and examination stages and involved five elementary schools in West Java. The results showed that understanding of disaster mitigation through comics in elementary education students is one of the solutions that need to be done in Indonesia to create a disaster-resilient generation and with comics the students’ understanding of disaster preparedness is getting better. Awareness of disaster mitigation education from an early age is a very positive effort to instill a spirit of preparedness and concern for potential disasters and efforts to overcome them for the younger generation of a nation to sustain a better future.
The role of disaster knowledge in the preparedness of students in West Bandung Regency
Authors: Fauziyah A R S , Sugandi D , Ruhimat M
Published: November 2022

Landslides in West Bandung Regency have an increasing incidence every year. One of the causes of landslides is the relatively high rainfall which facilitates weathering of rocks and soil. To anticipate and minimize the impacts that occur, the transformation of knowledge about disasters is a sufficient preventive step to increase community preparedness in facing disasters. The purpose of this study was to identify students’ knowledge about disaster preparedness. The method used in this research is a survey with a quantitative approach. Data were obtained from 192 students through tests and questionnaires. The results of this study indicate that there is a positive and significant influence on the ability of knowledge at levels C2 (understanding), C3 (implementing), and C4 (analyzing) on landslide disaster preparedness, while knowledge levels C1 (remembering), C5 (evaluating), and C6 (creating) there is no significant effect on landslide disaster preparedness. The recommendation in this study is that there needs to be an increase in developing instruments for learning outcomes that are more proportional at each level of knowledge, not only limited to knowledge at C1 and C2 levels, especially in disaster mitigation materials to improve preparedness for landslides.
Ecological criteria for sustainability in global, national, and local scales: a review of the literature and case study in the indonesian palm oil sector
Authors: Astari A J , Somantri L , Bratanegara A S , Ihsan H M , Aliyan S A
Published: November 2022

Current sustainability assessment methods are mostly disseminated at global or national scales. However, the sustainability criteria often fail to capture many ecological characteristics that are important to the local population. This article aims to understand the importance of ecological criteria for sustainability by reviewing the literature on issues related to the implementation of ecological criteria on global, national, and local scales. This study uses qualitative content analysis by examining secondary data searches such as journal articles and research reports regarding the topics. We use NVIVO software for theme coding. We also use a case study in the oil palm plantation in Belitung Island and the Indonesian palm oil sector to see how global and national ecological criteria for sustainable palm oil were designed and whether it is adaptable to the local context. This study reveals three main themes namely the function of ecological criteria and indicators, the adaptation of global and regional criteria, and the importance of local characteristics and value. We concluded that although global and national criteria for sustainable palm oil have been established, the characteristics of local biodiversity and social value and its prioritization are needed to ensure sustainability reached the lowest scale.
Challenges and opportunities of biodiversity park as a togong-tanga indigenous peoples conservation area in banggai kepulauan, central Sulawesi
Authors: Fathurrahman A , Supriatna
Published: November 2022

Biodiversity Park has a function as a research and biodiversity. Protected areas become a conservation strategy area. This research aims to look at the opportunities and challenges of a biodiversity park as a conservation area with a spatial, descriptive and SWOT analysis that includes physical and social factors. Land use spatial variables uses land use, slope, and function of forest area. Social factors focus on the local ecology of indigenous peoples and also Non-Timber Forest Products (NTFP) at the park. On the physical factor, some points of the park are of attractive natural beauty such as beautiful cliffs. In terms of social factors, local ecological knowledge of indigenous peoples can be said to be quite good. The indigenous peoples at all points already have good knowledge about the diversity of flora and fauna in their area. The challenge of the biodiversity park as a conservation area is that the general public in the whole village does not understand how to protect the environment. In a focus group discussion at the point of Mangais village, that the community is more concerned with wages that can be obtained in the short term.
Tea smallholder livelihood development in cijulang village
Authors: Andini E R D , Sumadio W
Published: November 2022

Sustainability Livelihoods Approach is an approach used to measure households’ attempts to sustain their livelihoods. One of the livelihoods currently facing problems is that of tea smallholders. Tea plantations managed individually by farmers are phenomena to be found in several districts in West Java, one of which is the District of Sukabumi. As tea plantation holders the farmers also have several other livelihoods. This research aims to determine the pattern of development of livelihoods of the tea smallholders’ household by asset. The weighting of each asset the SLA is carried out based on the geography of the research location. Data collection is conducted through in-depth interviews with pre-determined informants. As households whose livelihoods come from primary economic activities, natural asset ownership is highly important. Households with high natural asset are always followed by high financial asset ownership. Meanwhile, high physical asset is followed by advantageous human asset. This enables farmers to develop various economic activities in the village in order to sustain their tea plantation production. However, tea smallholders with low natural asset face difficulties in diversifying economic activities in the village. Based on these facts, the conclusion of this research shows that the sustainability of tea plantation highly relies on ownership of natural assets in the form of the size of the plantation area.
The efficiency of semarang – pekalongan toll road in goods transportation
Authors: Pugara A , Pradana B , Puspasari D A
Published: November 2022

Trans Java toll road belongs to a strategic development program of the Indonesian Government. Towards toll roads, the time of travel can be shorted, hence the transportation cost becomes lower. Semarang – Pekalongan Toll road is part of the trans java program. It connects Semarang City and Pekalongan City. Semarang is identified as the trading city. In this city, many of product be promoted in the national or regional area. In the other side, Pekalongan is known as the centre of Batik. The connectivity between them aims to promote Batik to the large market. However, the travel cost by toll road is higher than by Pantura Road. By that fact, the toll road could be less efficient compare to Pantura road. Thus, this research wants to ensure the efficiency of Semarang – Pekalongan toll road. The research is conducted by deductive – rationalistic approach. The analytical method is statistic descriptives. Based on the analysis, the toll road is inefficient on goods movement in mid-distance (up to 100 km). The average cost of goods movement in the mid-distance in Pantura Road is 70 % lower compared to the toll road. Refer to that fact, the toll road pricing should be evaluated to improve efficiency.
Emission and co2 sequestration from land use and land cover change according to spatial planning in banyuasin regency, province of south sumatra
Authors: Firyadi
Published: November 2022

The aim of this study was to determine the carbon balance, emission, and CO2 sequestration due to land use and land cover change in Banyuasin Regency from 2004-2014. The methods applied in this study included determination of carbon balance using the matrix of land use change and land cover change, calculation of carbon for each carbon pool by allometric and destructive sampling method, calculation of organic C through the method of Walkley and Black, and method of stock difference for analyzing carbon stock change, CO2 emission and sequestration. Result of this study showed that carbon balance in Banyuasin Regency from 2004-2014 was negative with carbon loss of 22.033.277 tons and average annual carbon loss of 2.203.327 ton. Moreover, CO2 sequestration, emission, and net emission reached 29.298.966 tons, 118.044.141 tons, and 88.745.175 tons, respectively. Average net emission of CO2 from carbon pool of above-ground, necromass, litter, and below-ground was 7 tons ha-1 year-1, while CO2 emission from organic C in soil was 0,61 ton ha-1 year-1. It is expected that changes in peat swamp forest, secondary mangrove forest, primary mangrove forest, and secondary peat swamp forest majorly contributed to CO2 emission in Banyuasin Regency.
Analysis of NO2 pollutan gas emissions distributions in Bandung City
Authors: Prasetya A A , Nasrullah N , Sulistyantara B
Published: November 2022

NO2 pollution in urban area is mostly derived from emissions of vehicles, industries, households, and others. Those emissions continue to increase with the growth of pollutant sources, followed by population growth. In this category of an urban area like Bandung city, one of the most populated cities based on BPS [1], there are 2,5 million people, which excludes the commuters yet. NO2 pollutant is hazardous if it continues to be ignored because it can cause respiratory disorders until death. Facing these impacts, we need to establish adequate green open spaces that match those emissions. This reseach aims to calculated emission of NO2 pollutant in bandung using the zongan formula. There is 288.152 unit of vehicles that passes through the study area, 33 types of industries, and 284.978 households that support the amount of growth NO2 pollution with length area of Bandung city are 4738.90 Ha. According to the data shows that pollutions from housing have a big impact followed by transportation. There are LPG from housing that totalled NO2 emissions pollutant 675.255,371 g/gj and transportation all totalled 172.814,52 gr/ day.
Transport Management in Rural Areas to Improve Road Safety User
Authors: Praja S W , Pratama M R B
Published: November 2022

The Palembang-Jambi National road is located in the Musi Banyuasin Regency. The road section has a primary arterial function with a design speed of 60 km/hour. The Palembang-Jambi National road is a Sumatran highway that connects islands between provinces in Sumatra and Java. With such conditions, traffic problems arise in the form of traffic accidents. Therefore, to overcome these traffic problems, an analysis is needed to overcome these problems.

The analytical method used in this research the macro analysis and microanalysis. Macro analysis was carried out to determine the general characteristics of accidents, and the tendency of traffic accidents to occur on the Palembang-Jambi KM 212 road section. Macro analysis used simple numerical analysis, namely analysis of the time of the accident, analysis based on the month of occurrence, analysis of accident victims, and analysis of the type of accident. The microanalysis consists of several analyzes consisting analysis based on accident chronology data, analysis of factors causing accidents, analysis of instantaneous speed, and analysis of stopping visibility. After doing this analysis, it can be concluded that the factors that cause accidents that often occur at KM 212 Palembang - Jambi National Road are infrastructure factors and human factors. The infrastructure factor is the main factor in the accidents that occur. So that this research is needed to overcome these problems such as additions, replacements, and maintenance of road equipment facilities to technical requirements.

With this handling, it is to reduce the fatalities of crash severity and reduce the number of a traffiaccidentsnt on KM 212 the Palembang-Jambi National Road, Musi Banyuasin District.
Impact of COVID-19 pandemic on university students' use of campus green space and recommendations for post-epidemic green space management
Authors: Wang H , Manningtyas RT , Luo S , Danniswari D , Furuya K
Published: November 2022

The impact of COVID-19 on university students’ utilization of campus’ green spaces and its need in the post-epidemic era was studied in this research. Data were collected from Chinese and Japanese university students using an online questionnaire. The findings show that COVID-19 induced campus lockdown affected students’ motivation to go to school, reduced the time spent on campus, and reduced school frequency. The lockdown encouraged students to explore the green spaces despite their inability to enter the campus. Arguably, COVID-19 has significantly influenced usage pattern of campus’ green spaces. In the post-pandemic era, students generally prefer integrated campus green spaces with wider areas. According to the one-way ANOVA, larger green spaces that can accommodate a lot of people are considered controversial by students coming from various countries and grades. This is because these may attract crowds, increasing the risk of infection. These findings have practical implications for administrators and designers of campus green spaces. Furthermore, the findings of this study could be used to improve campus green spaces in the post-pandemic era, resulting in a more appropriate campus environment for students.
Sustainable Urban Agroecopark Development Plan for Optimizing Local Community Welfare and Preserving Traditional Agriculture Land at Padang Panjang City West Sumatera Province
Authors: Nurisyah Siti , Jamaludin Abdul , Syahadat Ray March
Published: November 2022

Nature hilly area at Padang Panjang at West Sumatera Province is proposed to be sustainable agroecopark (SAEP) with dairy cow as main object. This urban recreation park is a healthy and educative outdoor space which is needed for accomodating new normal life type due to Covid 19 pandemic Study carried out on 3.2 Ha open space land at the city edge to create a conceptual park plan which could accommodate family leisure activity, increase local people welfare, and protect local landscape. Data and method of analysis used are descriptive analysis for site condition; RRA and CVM analysis for community acceptability. Published materials, site mapping and observation, survey and FGD were method of data collecting. Only 21% relatively flat area will developed as park actvities and facilities areas, and the rest hilly part will be preserved. Local community support SAEP development due to its positive impacts, and negative tourism impacts will be minimized by introducing sustainable park management model. Problems of job opportunity, forage supply and traditional agricultural land preservation will be solved with management of agriculture system of surrounding area. SAEP will be developed as interactive educational park in form of integrated farming within local nature and culture.
Evaluating the Accessibility of Networks in Earthquake Memorial Facilities for the Great East Japan Earthquake
Authors: Nishisaka R , Yazawa Y , Furuya K
Published: November 2022

In areas affected by the 2011 Great East Japan Earthquake, many museums and stone monuments were established to communicate the insights obtained from the disaster. As of April 2021, more than 200 facilities have been registered as “earthquake memorial facilities” by the government. However, most of these facilities are operated without guidance from the public. A comprehensive visitor plan is required to link each facility, and to effectively share disaster lessons. Accordingly, this study analyzed visitor access to earthquake memorial facilities, and clarified the geographical network connecting these establishments. It evaluated the accessibility of transportation for visitors, and considered ways of enhancing this network. To these ends, we created a list of earthquake memorial facilities that were constructed in the affected Tohoku region; we mapped these facilities using a geographic information system. A facility’s ease of access, as measured by the time taken to gain access, was analyzed on the basis of the distance between facilities, with transportation considered. The results were used to propose a network for an earthquake memorial facility. We also discussed the possibility of providing tours on the facility’s network, and discussed their relationships with transportation bases and other networks. For future use, we proposed a method for improving accessibility to each facility in the network.
“How we understand our place”: A Study of Japanese University student's Place Attachment and Desire to live to Rural Areas
Authors: Mao Yingming , He Lei , Furuya Katsunori
Published: November 2022

Japan is facing increasingly severe challenges in rural areas, such as an aging and declining population and a lack of successors and young people. The Ministry of Agriculture, Forestry, and Fisheries (MAFF) of Japan has emphasized that it is important to explain to younger generations the region's appeal for rural development. The purpose of this study was to understand how young Japanese university students' perceptions of rural areas, as well as what factors, influence their attachment to rural areas and willingness to reside there. 71 students from Chiba University in Japan were selected for the survey. Students were asked to tell their experiences in rural areas, and the traditional Place Attachment Scale was used to analyze. In addition, semantic analysis was used to analyze the results of the free description. As a result, we found that students' birthplace, visiting experience, degree of interaction with residents, willingness to migrate, and level of satisfaction with their visit affected their place attachment. Students are generally more satisfied with rural areas, but less willing to move. This research provides the following suggestions for improving young people's sense of responsibility and inheritance in rural areas,1) University can set up relevant courses on rural history, culture, and environment to improve students' knowledge and awareness of rural areas, and learn more about the environment and culture of rural areas. 2) In the Information Age, students should actively be encouraged to go to rural areas to engage in more nature.
The Design of Rajabasa Pocket Park based on Lampung Cultural Motifs
Authors: Franjaya E E , Sitompul R A , Satria W D
Published: November 2022

Bandar Lampung is the capital city of Lampung Province that faced massive development in this decade. Commercial and industrial buildings, settlements, and other infrastructures were rapidly developed. It is reasonable, because there are toll road development and some national strategic projects in Lampung Province, especially near Bandar Lampung. But, those development is not fully in line with the supporting infrastructure development like parks. Whereas the amount of green open spaces, especially parks, is still far from sufficient. It is important to take advantage of the remaining space to be a park, pocket park exactly. This study aims to create a design of a pocket park in a small area in Rajabasa-Bandar Lampung. We apply Lampung Cultural Motifs as a concept of design to make a unique pocket park that possibly becomes one of the destinations for visitors when they come to Bandar Lampung. It could be one of the objects of tourist attraction. A qualitative-descriptive method along with a landscape design technique was used in this study. The result of this study is 3D visualization designs of Rajabasa Pocket Park which apply some motifs of tapis, siger, and traditional script. The motif of tapis is applied on sidewall and floor while the pepadun siger and traditional script are applied as a landmark of the pocket park.
Place-Based Approach to Landscape Planning for Conservation of the Baduy Dalam Cultural Landscape
Authors: Septini Khairani Rizki , Pramukanto Qodarian
Published: November 2022

The Baduy tribe is one of the Sundanese indigenous groups who still adhere to the customs of their ancestors, their life is dedicated to fulfilling the mandate of their ancestors in maintaining the balance and harmony of the universe. Development activities, locally and global climate change pose a threat to traditional tribes, such as the Baduy as well. These issues need to be solved through a study conducted by identifying various problems and threats to the Baduy Dalam and providing solutions in the form of a landscape plan. Landscape planning was developed through a place-based approach, in this approach a place is a unit of analysis containing the unique characteristics and local values that shape it. This research was carried out through the stages of preparation, inventory, analysis, synthesis, to create a landscape plan. Place units were analyzed through bioregional analysis by classifying landscapes hierarchically into three bioregional units, namely bioregion units, landscape units, and place units. The results of the classification and bioregional analysis of the Baduy Dalam landscape can be classified into 103 place units. Evaluation was carried out on each site unit based on threats and problems for each unit. The main issues found in the Baduy Dalam landscape is the limited availability of agricultural land resources (huma) which are used on a rotational basis, which has implications for decreasing land fertility. On the other hand, the population growth rate is quite high which requires increased demand for agricultural production land. The solution to these problems is realized in the form of a landscape plan which was developed based on the concept of spatial division by balancing the utilization area of land for productive use (huma, jami, reuma) in order to be able to meet the demands of the population for agricultural production land. Landscape plan was implemented in spatial plans (zoning), circulation plans, and vegetation plans.
Extending the degree of polarization concept to higher-order and orbital angular momentum Poincaré spheres
Authors: Marco David , Sánchez-López María Del Mar , Hernández-García Carlos , Moreno Ignacio
Published: November 2022

In this work, the density matrix formalism that describes any standard polarization state (fully or partially polarized) is applied to describe vector beams and spatial modes with orbital angular momentum (OAM). Within this framework, we provide a comprehensive description of the mapping between the corresponding Poincaré spheres (PSs); namely: the polarization PS, the higher-order PS (HOPS) and the orbital angular momentum PS (OAMPS). Whereas previous works focus on states located on the surface of these spheres, here we study vector and scalar modes lying inside the corresponding PS. We show that they can be obtained as the incoherent superposition of two orthogonal vector (or scalar) modes lying on the corresponding sphere surface. The degree of polarization (DoP) of a classical polarization state is thus extended to vector beams and OAM modes. Experimental results validate the theoretical physical interpretation, where we used a q-plate to map any state in the polarization PS onto the HOPS, and a linear polarizer to finally project onto the OAMPS. Three input states to such q-plate-polarizer system are considered: totally unpolarized, partially polarized, and fully polarized light. For that purpose, we design a new polarization state generator, based on two geometric phase gratings and a randomly polarized laser, which generates partially polarized light in an efficient and controlled way. We believe that the extension of the DoP concept to vector and OAM beams introduces a degree of freedom to describe spatially polarization and phase variant light beams.
Composite wave-absorbing structure combining thin plasma and metasurface
Authors: HAO Zhian , LI Jianfei , XU Bin , YAO Jingfeng , YUAN Chengxun , WANG Ying , ZHOU Zhongxiang , WANG Xiaoou
Published: November 2022

In order to solve the thickness dependence of plasma absorption of electromagnetic waves and further reduce the backward radar scattering cross section (RCS) of the target, we designed a novel composite structure of a metasurface and plasma. A metasurface with three absorption peaks is designed by means of an equivalent circuit based on an electromagnetic resonance type metamaterial absorber. The reflection and absorption of the composite structure are numerically and experimentally verified. The finite integration method was used to simulate a composite structure of finite size to obtain the RCS. The experimental measurements of electromagnetic wave reflection were conducted by a vector network analyzer (Keysight N5234A) and horn antennas, etc. The research showed that the absorption capacity of this composite structure was substantially improved compared to either the plasma or the metasurface, and it is more convenient for application due to its low plasma thickness requirement and easy fabrication.
Experimental study of a neutralizer-free gridded ion thruster using radio-frequency self-bias effect
Authors: YANG Zhi , GUO Honghui , BAI Jinwei , LI Yang , CAO Yong , ZHU Yu
Published: November 2022

An experimental study on the quasi-neutral beam extracted by a neutralizer-free gridded ion thruster prototype was presented. The prototype was designed using an inductively coupled plasma source terminated by a double-grid accelerator. The beam characteristics were compared when the accelerator was radio-frequency (RF) biased and direct-current (DC) biased. An RF power supply was applied to the screen grid via a blocking capacitor for the RF acceleration, and a DC power supply was directly connected to the screen grid for the DC acceleration. Argon was used as the propellant gas. Furthermore, the characteristics of the plasma beam, such as the floating potential, the spatial distribution of ion flux, and the ion energy distribution function (IEDF) were measured by a four-grid retarding field energy analyzer. The floating potential results showed that the beam space charge is compensated in the case of RF acceleration without a neutralizer, which is similar to the case of classical DC acceleration with a neutralizer. The ion flux of RF acceleration is 1.17 times higher than that of DC acceleration under the same DC component voltage between the double-grid. Moreover, there are significant differences in the beam IEDFs for RF and DC acceleration. The IEDF of RF acceleration has a widened and multi-peaked profile, and the main peak moves toward the high-energy region with increasing the DC self-bias voltage. In addition, by comparing the IEDFs with RF acceleration frequencies of 3.9 and 7.8 MHz, it is found that the IEDF has a more centered main peak and a narrower energy spread at a higher frequency.
Extreme ultraviolet spectral characteristic analysis of highly charged ions in laser-produced Cu plasmas
Authors: LI Maijuan , SU Maogen , LI Haoyang , MIN Qi , CAO Shiquan , SUN Duixiong , ZHANG Denghong , DONG Chenzhong
Published: November 2022

This paper reports the results of spectral measurements and a theoretical analysis of the temporal and spatial evolution of laser-produced Cu plasma in vacuum in the range of 8–14 nm. The time dependence of the extreme ultraviolet band spectrum at different positions near the target surface was obtained and found to be dominated by three broad-band features. The 3p and 3d excitations of Cu5+–Cu9+ ions were calculated using the Hartree–Fock theory with configuration interactions. The characteristics of the spectral line distribution for the 3p–nd and 3d–nf transition arrays were analyzed. Based on the steady-state collisional radiation model and the normalized Boltzmann distribution, the complex spectral structure in the band of 13–14 nm is accurately explained through consistency comparisons and benchmarking between the experimental and theoretical simulation spectra, demonstrating that the structure mainly stems from the overlapping contribution of the 3d–4f and 3p–3d transition arrays for the Cu5+–Cu9+ ions. These results may help in studying the radiation characteristics of isoelectronic series highly-charged ions involving the 3d excitation process.
Isotropic random spin weighted functions on 𝑆² vs isotropic random fields on 𝑆³
Authors: Stecconi Michele
Published: November 2022

We show that an isotropic random field on

S
U
(
2
)

SU(2)

is not necessarily isotropic as a random field on

S
3

S^3

, although the two spaces can be identified. The ambiguity is due to the fact that the notion of isotropy on a group and on a sphere are different, the latter being much stronger. We show that any isotropic random field on

S
3

S^3

is necessarily a superposition of uncorrelated random harmonic homogeneous polynomials, such that the one of degree

d
d

is necessarily a superposition of uncorrelated random spin weighted functions of every possible spin weight in the range

{

−

d
2

,
…
,

d
2

}

\bigl \{-\frac {d}{2},\dots ,\frac {d}{2}\bigr \}

, each of which is isotropic in the sense of

S
U
(
2
)

SU(2)

. Moreover, for a random field of fixed degree, each spin weight appears with the same magnitude, in a sense to be specified.

In addition we will give an overview of the theory of spin weighted functions and Wigner

D
D

-matrices, with the purpose of gathering together many different points of view and adding ours. As a byproduct of this survey we will prove some new properties of the Wigner matrices and a formula relating the operators

ð

ð
¯

\eth \overline {\eth }

and the horizontal Laplacian of the Hopf fibration

S
3

→

S
2

S^3\to S^2

, in the sense of [Bérard Bergery and Bourguignon, Illinois J. Math. 26 (1982), no. 2, 181–200.]
An addendum to “Mild solutions to semilinear stochastic partial differential equations with locally monotone coefficients”
Authors: Tappe Stefan
Published: November 2022

In this addendum we provide an existence and uniqueness result for mild solutions to semilinear stochastic partial differential equations driven by Wiener processes and Poisson random measures in the framework of the semigroup approach with locally monotone coefficients, where the semigroup is allowed to be pseudo-contractive. This improves an earlier paper of the author, where the equation was only driven by Wiener processes, and where the semigroup was only allowed to be a semigroup of contractions.