bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of water availability of the Singkoyo River for the irrigation needs in the Banggai Regency, Indonesian
Authors: Lipu S , Vargorio R , Retno O D
Published: December 2021

Indonesia relies on its food security by expanding the area and productivity of agricultural land. This condition requires water to irrigate existing rice fields, such as in the Singkoyo area. This study aims to determine the study area’s surface water availability (Q80), irrigation needs, and water balance. Some methods are applied, such as Penman-Monteith for the evapotranspiration calculation, and the FJ Mock method for the dependable flow and water need based on the annual cropping plan. The result shows that the Singkoyo River, with a catchment area of 408.55 km2, has an average flow rate for Q80 is 6.24 m3sec-1, whereas the most significant discharge occurs in July 15.48 m3sec-1 and the smallest occurs in November at 2.86 m3sec-1. On the other hand, applying the worst scenario with three times of planting per year with rice, the need for three irrigation areas vary according to the NFR during the plantation phase from 7.20 m3sec-1 at the 3rd planting season in October, and the lowest is 2.0 m3sec-1 at the 2nd planting season in February. The water balance is mostly surplus from December to August, but then deficit during September to November by -1.34 m3 sec-1 on average.
Study on the Performance of the Hydraulics System Planning of Swampy Irrigation Area of Dadahup, Kapuas District, Central Kalimantan Province
Authors: Arif M I , Legono D , Luknanto D
Published: December 2021

Swampy Irrigation Area (DIR) Technical Implementation Unit (UPT) Dadahup is a swampy irrigation area that needs serious handling of flood control. This flood is resulting in crop failure in several blocks. Furthermore, the malfunctioning of the main gates in controlling the entry and exit of water resulted in a long-standing inundation for the land. This paper presents the hydraulic system of the irrigation network of DIR UPT Dadahup by reviewing secondary data and documentation of field observations. Based on these parameters, the authors simulate the main primary channel using HEC-RAS to perform hydraulic analysis. The flow simulation results show that water entering the land inundated the three canal segments. One has the highest embankment elevation of 1,778 m, with the highest tide on the channel section of 2.25 m. Other results showed that water entering the land also inundated one channel section. The highest embankment elevation was 1,233 m, with the highest tide on the channel section being 1.4 m. From these results, the overflow of water was then eliminated by the heightening of the embankment.
The hydrodynamics condition of water operating area for flight test site selection of N219 Amphibious aircraft
Authors: Khoirunnisa H , Wibowo M , Hendriyono W , Wardani K S
Published: December 2021

This research aims to assess the hydrodynamics condition of the water area for site selection of that purpose. The bathymetry data of Karimunjawa Island were obtained from the 1986 Pushidrosal bathymetric map. Furthermore, wind direction, wind speed, wave height and direction, and tidal data around the waters of Karimunjawa Island were input in hydrodynamic and spectral modelling using MIKE 21 HD-SW. West monsoon and east monsoon were applied in this model. The validation result between hydrodynamic modelling and Tidal Model Driver (TMD) data is 98.89%. The surface elevation around the domain has a range of 0.072 - 0.5 m. The average water depth at the seaplane dock plan is about 2.5 m from MSL. The hydrodynamic modeling results show that the surface elevation value at the seaplane dock plan location shows that the sea level is between -0.467 to 0.473 m (in both west and east season). The current velocity at the planned seaplane dock site in both the west and east monsoons is relatively slow (<0.185 m/s). The dominant wave direction is southeastward in the east and west monsoons. The dominant Hs is about 0.23 – 0.6 m in both seasons. At the planned water operating area, the average of Hs is 0.23 m - 0.36 m. Generally, this location fulfills the criteria of site selection for the flight test location of N219A.
Comparisons of distributed and lumped rainfall-runoff model for soil moisture estimation
Authors: Hapsari R I , Syarifuddin M , Putri R I , Novianto D
Published: December 2021

Soil moisture is an important parameter in landslides because of increased pore pressure and decreased shear strength. This research aims to derive soil moisture indicators from two hydrological models: the physically-based distributed hydrological model and the lumped model. Rainfall-Runoff-Inundation (RRI) Model is used to simulate the hydrological response of catchments to the rainfall-induced landslide in a distributed manner. Tank Model as a lumped hydrological model is also used in this study to simulate the dynamic of soil moisture. The study area is the upper Brantas River Basin, prone to landslides due to heavy rainfall and steep slope. Calibration of the model is conducted by tuning the model according to the river discharge data. The simulation indicates that acceptable performance is confirmed. Tank Model can provide the dynamic of the soil moisture. However, by using this approach, the spatial variation of the soil moisture cannot be presented. Regarding the quantitative amount of soil water content, RRI Model could make a reasonable simulation though the temporal variation is not adequately reproduced. Validation of this method with satellite soil moisture as well as ground measurement is also presented. The challenges of using these approaches to develop landslide hazard assessment are discussed.
Handling of The Environmental Drainage System In Jembrana District, Bali Province
Authors: Nuraga K , Prasetyorini L
Published: December 2021

The rapid growth of the urban population should be followed by the provision of basic infrastructure and facilities inadequate residential areas. One of them is the facilities and infrastructure for the environmental drainage system in residential areas to be free from standing water, especially during the rainy season. In Jembrana Regency, especially in Negara city and its surroundings, there are fourteen inundation points spread over 3 (three) districts. Drainage treatment is carried out by ranking priority scales based on inundation parameters. The parameters are inundation of height, length, frequency, and also the loss parameters due to inundation of economic facilities, public facilities, transportation facilities, housing, and casualties. With limited funds available, detailed planning is carried out on three inundation points with the highest priority score. The analysis shows that three inundation points receive priority for handling, namely Baler Bale Agung village’s environmental drainage system, Dauh Waru village, and environmental drainage Loloan Timur village. The drainage construction system uses an open channel with a U-ditch type and a box culvert with freecast concrete’s quality value of K-350.
Study of climate change effect on water balance in upper Citarum Watershed, the Krueng Cunda Watershed, and the Woske Watershed, Indonesia
Authors: Chalid A , Mulyadi A
Published: December 2021

The community feels the changes in water availability due to climate change will directly impact water availability, especially water availability in rivers, reservoirs and other water reservoirs. The purpose of this analysis is to determine changes in the rainy season shift, changes in mainstay discharge, and the effect of climate change on water balance. The results show a shift in the rainy season and a significant decrease in rainfall during the last ten years. In the Upper Citarum watershed (UCW), there is a change in the maximum and minimum mainstay discharge in the three watersheds. Climate change significantly affects the water balance in a watershed. Meanwhile, in the Krueng Cunda watershed (KCW) and the Woske watersheds (WW), there was a decrease in the value of the water balance, which was the same as the UCW. However, still able to meet the water needs of the population. There was a decrease in the value of the water balance, which was the same as the UCW, but still able to meet the population’s water needs.
Assessment of spatial changes of LULC dynamics, using multi temporal landsat data (case study: Lesti Sub Watershed, Malang Regency, Indonesia)
Authors: Darmawan A A , Suhardjono  , Bisri M , Suhartanto E
Published: December 2021

The research background is to present certain important observations about land change as one of the basis for decision making for water resources management in the sub-urban environment, taking into account field data and classification of satellite imagery to understand natural spatial change patterns. The Lesti sub-watershed, an area upstream of the Brantas River related to multi-functional activities, continues to develop in terms of infrastructure management, especially the river water discharge that enters the Sengguruh Reservoir which causes increased pressure on water and human needs for housing. The method is utilizing Landsat satellite imagery for the last 20 years is used to obtain an analysis of land use/land cover (called: LULC) changes to see the rate of change over the last 20 years. The land use classes used are agricultural land, surface vegetation, built-up areas, open land, and water bodies. Landsat satellite imagery data are classified and used to obtain LULC analysis in the area, to estimate and understand the rate of change over the last 20 years. The results showed that for 20 years, vegetation and open land experienced a considerable decline, while the value of built-up land increased from 0.79% to 13.26%.
Dam break analysis using 1D geometry at Jatigede Dam, Sumedang
Authors: Purnama N , Jayadi R , Istiarto
Published: December 2021

Dam breaks can result in flash floods which have enormous destructive power. This destructive force becomes even more significant when the dam break occurs in a dam with a large capacity. An example is the Jatigede Dam, which has a capacity of 1,060 million m3. To determine the flash flood characteristics and potential impact of the collapse of the Jatigede Dam, an analysis of the dam break was carried out using HEC-RAS software. The dam break scenario uses a Probable Maximum Flood (PMF) inflow with the partial opening of two spillway gates in the middle, which causes the dam overtopping. The Froehlich and Von Thun, and Gillette regression methods were used to defining the breach parameters. Based on the dam break analysis, the simulated flash flood of the Von Thun-Gillette method resulted in a higher velocity and lower water surface elevation than the Froehlich method. The difference in the velocity, dimension of the breach shape, water surface elevation, and discharge is caused by the breaching shape and breach formation time.
Dam Break Analysis of Salomekko Dam Using Zhong Xing HY21
Authors: Ayu M , Juwono P T , Asmaranto R , Milleanisa K E
Published: December 2021

Every Dam must have an emergency plan document in which there is a dam collapse analysis. Based on previous research, it is stated that dam collapse often occurs due to runoff and piping. In this case, the Dam that will be studied is Salomekko Dam, located in Bone Regency. Salomekko Dam is located in the Salomekko Hamlet of Ulu Balang Village, Salomekko Subdistrict, Bone Regency, South Sulawesi Province, which provides water for agricultural irrigation. Analysis of the collapse of the Salomekko Dam was carried out due to overtopping and piping. The stillness of the air overflows through the top of the Dam. At the same time, the piping is caused by seepage in the dam body, which carries the dam material gradually. Analysis of the Salomekko Dam collapse using the Zhong Xing HY21 application can produce maps of flood inundation distribution, flood outflow hydrographs, and flood times. Based on these results, it can also have a hazardous impact to define boundaries of disaster-affected areas.
Preliminary Study on Hand-cast Lightweight Concrete Block using Raw Rice Husk as Aggregate
Authors: Winarno S
Published: December 2021

Raw rice husk is an abundantly available waste material in Indonesia as one of rice producing countries. Due to rice husk is light in weight and convex in shape, this paper presents a preliminary application of raw rice husk as natural aggregate in order to make lightweight concrete blocks. Concrete specimens contained Portland Cement, filler, and raw rice husk, in which the mix proportion was in volumetric ratio, i.e 1.25 cement and 2.75 filler constantly, whereas dosage of rice husk varied from 8.5 to 10. The production of the concrete block was by mixing the ingredients together and then the mixture was casted and compacted on moulds by hand manually. Series laboratory experiments were accomplished to analyse the compressive strength and density. For this, four groups of mixes were prepared. The results have shown that the higher proportion of rice husk is the lower its compressive strength and the lighter its density. At proportion of 1,25 cement: 2,75 fillers: 8,5 raw rice husks, the compressive strength is 26.64 kg/cm2 and this satisfies the minimum standard (25 kg/cm2). Unfortunately, the density is 1,536.73 kg/m3 and it is higher than the maximum standard of 1,400 kg/m3. Thus, it is important to research further by making and testing some improved specimens with more cement, more rice husk, and less filler to fulfil strength and density.
Resilience Thinking Approach to Protect Marine Biodiversity in Small Islands: A Case of Gili Trawangan, Indonesia
Authors: Bakti LAA , Marjono  , Ciptadi G , Putra F
Published: December 2021

This paper examines the resilience thinking approach to protect marine biodiversity in small islands with the case of Gili Trawangan, Indonesia, which is part of a marine protected area. The rapid development of the world’s tourism industry, the monetary crisis in 1997, national reforms in 1998, global warming, and the irresponsibility of local governments to enforce formal rules on marine resources, have had a tremendous impact on marine biodiversity on small islands like Gili Trawangan. This study uses a qualitative method, including stakeholder interviews, participant observation, stakeholder mapping, and local document collection. The collaborative effort that was built by local residents with foreign businesspersons, academics, non-governmental organizations, and the village government of Gili Indah, started in 2001 was intended to protect the marine ecosystem on Gili Trawangan from destructive fishing practices, to prevent the further degradation of marine biodiversity on the islands. Results of this study found several collaborative work initiatives in Gili Trawangan to meet the challenges, e.g., the institutionalization of customary law called “Awig-Awig” to regulate coral reef activities, enforcement of regulations on marine biodiversity such as coral reefs, strengthening institutional capacity, and restoring the degraded coral reefs ecosystem.
Changes in CO2 Emissions in Online Student Learning Activities Due to the COVID-19 Pandemic in Indonesia and Japan
Authors: Salamena D P J , Cong Y , Lin F , Ardisa F , Novella U , Kurosawa T , Sako M , Ohtani Y , Fujiyama I
Published: December 2021

The Covid-19 pandemic is impacting entire countries. One of them is having an impact on CO2 emissions in Indonesia and Japan. The research project is focused on the use of transportation and electricity by Japanese Literature students of BINUS and Wakayama University Japan students before and during the pandemic. Concepts and methodologies, looking at the situation before and during a pandemic, using quantitative methods and approaches based on carbon footprint analysis. This study provides results showing that the use of electronics and transportation which has CO2 emissions is drastically reduced both in Indonesia and in Japan. However, Japan has higher CO2 emissions when compared to Indonesia which is influenced by certain factors, such as transportation mileage.
Assessing the Potential of Solar PV Installation based on Urban Land Cover Analysis
Authors: Zakiah A , Aditya R B
Published: December 2021

This paper presents a technical assessment of solar photovoltaic (PV) installation potential in urban areas based on its urban land cover type, using a case study of Indonesian cities including Yogyakarta, Kupang and Tomohon. The assessment was performed using a free online application to assess the urban land cover types, i-Tree Canopy. This application can be used to identify and distinguish urban land cover types such as building rooftop, vegetation, grass, soil, road and water, which then can be used to assess the suitable area for Solar PV installation. Additionally, solar photovoltaic power output data from Global Solar Atlas is used to calculate potential energy production from PV installations in each city. The result shows that in an urbanised city such as Yogyakarta, the most suitable PV installation is in building rooftops. Meanwhile, Kupang and Tomohon have higher potential for ground-mounted PV installation in bare ground or grass. The approach and result of this study could be used for planners and policymakers to determine city-scale solar PV installation planning to maximise solar energy production. It can also be used to calculate the solar energy estimation using free online applications, which is easy to use and more accessible for stakeholders.
Study on the Contribution of Normalization to Reducing Flood Risk in the Ciliwung River, Tebet District, Jakarta
Authors: Yatsrib M , Harman A N , Taufik S R , Kesuma T N A , Saputra D , Kusuma M S B , Farid M , Kuntoro A A
Published: December 2021

Jakarta is the capital city of the State of Indonesia and fast economy and population growth rate. With these, urbanization continues to increase every year. In this study, we analyse the effect of river normalization on reducing flood risk on the MT. Haryono - Manggarai section based on the Hec-RAS hydraulic model. Boundary Condition applied in upstream river is flow hydrograph with a peak discharge of 561.48 m3/s. In the upstream part, a rating curve is applied from the water level measurement data for the Manggarai Sluice Gate. While in the middle, the lateral flow from the urban drainage channels is inserted. The simulation results show that normalizing the channel can increase the drainage capacity as implied by the decrease in the flood water level. However, downstream there is backwater due to the lack of capacity of the Manggarai floodgate.
A Comparison Review of Kevin Lynch’s Urban Theory with the Chinese Cosmography of Feng Shui in the Heritage Area, Case Study: Pasar Baru, Jakarta
Authors: Meliana S , Rombe O SC , Henry L , Fajarwati A AS , Rachmayanti I
Published: December 2021

Jakarta is facing the reality of becoming one of the megacities in the world. As a megacity, Jakarta will continue to face critical problems, including environmental issues that occur not only in Jakarta but also in the surrounding areas. The research area is Pasar Baru, the oldest shopping area in Central Jakarta established in 1820. Naturally, this area should have a high historical value for the development of the City of Jakarta. This study explored the “shopping arcade” corridor from Kevin Lynch’s urban theory of “The Image of The City” to strengthen the implementation of re-planning the Pasar Baru in the future. This study aims to find how the view of The Image of The City can support the idea of re-planning the Pasar Baru from a tangible point of view, physically visible, and an intangible point of view through the spiritual approach of Feng Shui cosmography. The research uses qualitative methods supported by collecting data in literature reviews, surveys and analyzing them. The study found that the concept given by Kevin Lynch can help decision-makers of a city to be more responsible in making policies in designing a sustainable city to carry out conservation actions, not only political goals.
Liveable Muslim Settlements: A Systematic Literature Review to Understand Current Factors and Challenges
Authors: Yuli N G , Firmansyah R , Haningsih S
Published: December 2021

Liveable settlement refers to living environment. In the context of Muslim settlements, while people situated in homogenic culture and religious traditions, there was quite confuse how to improve them in better qualities of physical conditions despite the density in their own settlements. This paper tries to find any current factors and challenges of liveable Muslim settlements. Muslim settlements indicated where research did and liveable factors and challenges analysis from literature data stated about the experiences of liveability aspects. The systematic literature review used by analysis 19 paper in last ten years from ScienceDirect online databases from 2010 until 2021. Descriptive analysis did by grouped the key words from all papers, indicated theme of research and conclude it to factors and challenges of research topic. Literature data indicated physical, non-physical, and socio-culture factors as important factors to make settlement will liveable. Challenges from design and planning phases until implementing phase can confirm the fulfil of ideal indicators of liveable Muslim settlements.
Management of Village Treasury Land Based on Bamboo Agroforestry
Authors: Fauziyah E , Widyaningsih T S , Kuswantoro D P , Sanudin
Published: December 2021

Village land is widely used for agricultural cultivation activities. However, if it is not managed properly, it can turn into critical land that eventually needs to be rehabilitated to function optimally. The agroforestry approach to land restoration is becoming increasingly popular. This study aims to determine the management of village treasury lands and the application of bamboo agroforestry in managing village treasury lands. The research was conducted in November 2015 and February 2021. The methods used were interviews, Focus Group Discussions (FGD), observations and surveys of farmers’ land. The data obtained were processed and analyzed descriptively. The results showed that the management of the village treasury land was given to tenants with a rental system, where farmers who worked on farmers’ land were required to pay rent to the village government. The pattern of village land use is dominated by monoculture agriculture with seasonal crops such as corn, peanuts, red potatoes, and coffee. To optimize the land management of the village treasury, it also carried out activities through various programs such as reforestation, planting fruit and timber, but did not achieve success. The development of bamboo agroforestry is an alternative for managing village treasury land while still accommodating economic and ecological interests.
Catchment Area of Park-and-Ride and Kiss-and-Ride nearby Citayam and Bojonggede Railway Station
Authors: Bassayev M H , Sumadio W
Published: December 2021

Rail-based transportation, namely trains, has an important role for communities in sub-urban areas. By using the train, communities no longer need to use their vehicles. They can change modes with two choice of ways to get to the station, park their personal vehicle or by using shuttle transportation. The concepts of the two-ways is a form of implementation of park-and-ride and kiss-and-ride. This study aims to identify the reasons why KRL users choose park-and-ride or kiss-and-ride facilities and the user spatial patterns of these facilities. The analysis uses the E2-SFCA (Enhanced 2-Step Floating Catchment Area) method by calculating the distance and ratio of station users and then produces an accessibility value. The results of the analysis that have been carried out indicate that the majority of park-and-ride users are spread out in zone 2 and kiss-and-ride users are spread out in zone 1. The catchment area from both stations are predominantly from areas with local road network characteristics. This road network has a high density but limited vehicle speed. The cost and origin of the distance from the place of residence affect the difference in the catchment area of the KRL station.
Practical Applications of Sustainability Science in Landscape Planning Preliminary Stage of Bunaken-Tangkoko-Minahasa Biosphere Reserve
Authors: Saroinsong F B , Hernández-Salinas A , Purwanto Y
Published: December 2021

Sustainability Science (SS) is important in resource management, however not always well translated into actions. This research aims to find and implement practical applications of SS in the preliminary stage of landscape planning in Bunaken-Tangkoko-Minahasa Biosphere Reserve (BTMBR). The researchers put both perception and role of all local parties from the problem definition stage in landscape planning into account. The primary data was collected by using questionnaires. The secondary data includes literature review of SS in landscape planning, BTMBR’s characteristics, regulations and organizations. The researchers analyse landscape firstly by its 3-in-1-components namely space, environment, and human an later as unity. All parties consider watershed management as the entry point to sustainable and resilient landscape planning in this research case. The upstream part is perceived playing an important role, and because it is located in BTMBR core zone, this can be useful in future landscape management programs. The slope degree, which relates to watershed parts, is an important factor therefore landscape planning should consider different demand according to it. The Tondano Lake, as an important water element in BTMBR, do not have any conservation status. The researchers propose efforts to improve regulation and program including all local parties integration and involvement.
Inclusive Development Approach to Urban Water Services in Jakarta
Authors: Purba D E , Arrania N , Syamila M , Pranaya D , Kusumawardhani D E
Published: December 2021

The lack of a reliable piped water network in Jakarta causes the ongoing exploitation of groundwater. Thus, the government should provide inclusive clean water for all residents. This study aims to review the literature on the inclusive development approach on water services across urban contexts to provide recommendations for the local government. Since the inclusive development approach to water and sanitation is relatively new, the study employs a narrative review method to learn best practices from several cities across the globe. Studies showed that other cities faced a similar problem in providing piped water systems, leading to the reliance on groundwater sources. Some recommendations can be drawn from the study. First, the local government should increase water supply by piped water networks to low-income families in poor neighbourhoods. Second, subsidizing the poor should also be included in the system. Third, strict rules and regulations on groundwater use should also be applied to all to save water and the environment. Fourth, the collaboration between citizens and the government by encouraging community participation in decision making can empower citizens, especially women, to increase their knowledge on water use and their right to have clean water.
Agroecology-based Alipbata Program in Pantai Bahagia Village
Authors: Fauzan R S , Samputra P L
Published: December 2021

The environmental damage that occurred in Pantai Bahagia Village, Muara Gembong Sub-district, impacted the lives of the local community. So that the damage does not continue to occur, there must be a change in the system through Agroecology. This study aims to analyze the process of the Alipbata program activities and analyze the economic, social, and ecological impacts of the Alipbata program for the community in Pantai Bahagia Village. The research method uses a qualitative case study type. Interviews, documentation, and participant observation are used as data collection instruments. Alipbata applies agroecology using social capital with a Collaborative Learning strategy with Group Awareness Tools. The tourism awareness group is in charge of promoting and running ecotourism, whereas the farmer group is in charge of producing mangrove seedlings to be planted and sold. The impact on the social aspect is the formation of tourism awareness groups and farmer groups who become actors and influencers for the local community. From the economic aspect, farmer groups earn income from mangrove ecosystem commodities (tree seeds and various types of fish), whereas from the ecological aspect, restoration has returned the mangrove ecosystem to its original condition.
Application of Watershed Carrying Capacity and Sustainability Index (Case Study: Cimahi Sub-Watershed)
Authors: Hikmat R R , Marselina M
Published: December 2021

Activities carried out in Cimahi City are quite diverse so that can affect the decline in environmental quality, one of which is the sub-watershed. This condition explains that a study on the application of watershed carrying capacity and sustainabiliy index needs to be carried out to provide a comprehensive picture of the environmental conditions. The index is developed based on the study of carrying capacity and sustainability. The two studies are combined to complement the indicators that do not exist in each study. In general, the two studies consist of three main components, namely land, water resources, and social, economic, and institutional. The results of the study are then analyzed using the DPSIR framework. The analysis show that the sub-watershed is classified as poor performance. The final value obtained from the watershed sustainability study is 11,11. There are 13 out of 26 indicators that have poor performance. All indicators with these performances are priority actions. This research can be used by the government to create a management strategy for the Cimahi sub-watershed.
Conservations Javan Hawk Eagle (Nisaetus bartelsi) in Gunung Picis Ponorogo Nature Reserve
Authors: Yuliamalia L , Sunarto  , Utami T
Published: December 2021

The Javan Hawk Eagle (Nisaetus bartelsi) is a bird prey species (raptor) at the top of the food chain cycle that only exists in Java’s Island. Population the Javan Hawk Eagle is endangered due to illegal trade, poaching, and land narrowing. The purpose of this study is to know the population of the Javan Hawk Eagle in Gunung Picis Ponorogo Nature Reserve. The identification method used is by using the suitable method and direct observation. The study results explained that in the area, the Javan Hawk Eagle was found following food supplies in nature, so that area was very suitable for the breeding process of endemic birds in Java’s Island. In 2016, one young Javan Hawk-Eagle was released in this area. In 2017 and 2018, a young Javan Hawk-Eagle and 1 adult Javan Hawk-Eagle were found. Then at the end of 2019, they released one adult Javan Hawk-Eagle at location A, so there have been four adult Javan Hawk-Eagle. Observations lasted until 2020 in that area with the same result as in 2019. Observations made in that conservation area in February - March 2020 show that the Javan Hawk-Eagle conservation continues to increase, marked by the presence of young individuals.
Effects of Mangrove Plant Extraction on Adhesion Strength in Coating of Epoxy
Authors: Pratikno H , Titah H S , Aisyah D M
Published: December 2021

Steel is an alloy of ferrous metal with a maximum carbon content of 2%. This material is widely used for jetty building structures at rivers, estuary, and coastal areas. Corrosion of steel can occur due to several factors, such as the steel material itself and the surrounding environmental factors. One of the corrosion is biocorrosion that occurs due to the presence of biofouling. This study aims to determine the effect of adding extraction of mangrove (Avicennia marina) as an antifouling compound mixed in epoxy paint through adhesion strength parameter. Then the alloy was applied as a coating on the ASTM A36 steel specimen. The variation of coating composition were 100% of epoxy paint, 90%:10% (epoxy paint and extraction of Avicennia marina), 80% : 20% and 70% : 30%. The results showed that the adhesion strength occurred in 100% of epoxy paint (10.15 ± 0.64 Mpa). The adhesion strength was 8.86 ± 0.21 Mpa, 8.50 ± 0.03 Mpa, and 8.19 ± 0.07 Mpa at ratio of composition coating 90%: 10%, 80%: 20%, and 70%: 30%, respectively. In conclusion, the more mangrove extraction was added, the smaller the adhesion strength.
Innovative Energy-Saving Technology Management Model in the Company Sustainable Development System
Authors: Hilorme T , Horbach L
Published: December 2021

The development of innovative activity conditions an increase in the level of awareness of the enterprise employees about organizational goals, strategic and tactical development plans, industry trends, and the problem of engineering and management nature. The study’s purpose consists of substantiating the theoretical-methodological principles and developing practical recommendations for creating a company energysaving innovation activity management model. The methodological platform of the study is the set theory for building a model for determining the effectiveness of the management system of innovation activities of the enterprise. As a result, a model for monitoring parameters characterizing the effectiveness of enterprise innovation activity management system is proposed. In conclusion, the developed analytical-process model allows managers to quickly assess the current state of the enterprise innovation activity management system and reasonably make regulatory decisions concerning its improvement.
Reclaiming the Right to Play in the Child-Friendly City to Achieve SDG 11: The Case of Depok City
Authors: Salsabila S , Adianto J
Published: December 2021

The purpose of this research is to analyze the process of expanding commoning that happens when children produce playgrounds in the streets. The responsibility imposed by the award received by Depok with the title of the child-friendly city is questioned in this research. We use the theory of expanding commoning by Stavrides to analyze the continuity of production of children’s playgrounds in the street. The research method used is a qualitative method by conducting a discourse on the theory of common space and correlating the theory of expanding commoning with the theory of lived space. We conducted field observations in two different streets to make a comparison about which street’s characteristics produce continuous lived space. Our study shows that access for children to use other people’s resources, to control the programming of space, and to reach out to the social space easily are the factor that makes expanding commoning continue to happen. This research is expected to be able to broaden the knowledge about the concept of child-friendly settlements.
Smart Communities and Community Empowerment for Environmental Sustainability
Authors: Herdiansyah H , Januari A D
Published: December 2021

The development of urban systems towards smart cities encourages the existence of smart communities as well. Smart communities are influenced by social developments in the community, which is dynamic and influenced by society and individuals’ social level. Therefore, this study aims to analyze the use of social capital in building a smart society. This article uses the qualitative method analysis which is a literature study of 18 documents. Based on the literature study, the use of social capital in the community can encourage community empowerment activities because trust and a cooperative attitudes are built among residents. This will affect the habits and activities of individuals in society, such as the development process of protecting the environment. Increasing empowerment activities will help accelerate the process of developing a smart community. Therefore, social capital is essential in the development of smart communities and smart cities.
Adaptation Strategy of Urban Communities in Facing Environmental Problems Due to Climate Change
Authors: Wijaya A , Luthfi A
Published: December 2021

Cities have a high vulnerability to climate change. Rising sea levels that cause tidal flooding frequently happen in coastal cities, damaging the environment. People lost their houses and occupation, making them powerless. This research aims to identify the adaptation strategy used by urban communities in coastal cities to survive environmental problems due to climate change. This research is located in Tambak Lorok in Semarang City and Bedono in Demak Regency. Qualitative research was employed to gain an in-depth understanding of the adaptation strategy of urban coastal communities. Data were collected by interviews, observation, and literature study. The results show that environmental problems that occurred because of climate change are one complication of serious problems, but it is worsened by construction projects as a part of urban development. The two communities have similar but different strategies for survival in that situation. While the people of Tambak Lorok in Semarang City do not have any other better option than accepting the relocation, the people of Bedono in Demak Regency rely on mangroves to protect their settlements. This result concludes that although urban coastal communities have their adaptation strategies, they need long-term solutions from local governments and other parties to live without worry.
Customary Forest Utilization: The Determinants of Indigenous (Adat) Community’s Economic Welfare
Authors: Hidayat D C , Surati  , Sylviani  , Sakuntaladewi N , Ariawan K , Ekawati S
Published: December 2021

Customary forest utilization to improve the indigenous (adat) community welfare must be in line with local wisdom and preserving ecological function, even though they are no longer part of the state forest. In term of sustainable customary forest management, knowledge related to customary forest utilization and community welfare is getting significant to be study object. The paper aims to identify and analyse the determinants of indigenous community’s income. It was conducted in indigenous community of Kasepuhan Karang, Banten in 2018. Data collection was taken by purposive sampling, processed by ordinal logistic correlation and descriptive analysis. The results show the indigenous community has high level of dependence on the forest through on and off farm. From the respondents, the average income from forest use is below the regional minimum wage. While from the partial test results, it is concluded the land owned area and the livelihood type have a significant positive effect on the income level. Therefore, land distribution should be well managed due to conservation issue and livelihoods diversification to increase income level. Nonetheless, formal education level undetermined on income level. Informal education, capacity building of the community regarding to sustainable customary forest management needs to be organized.
Enhancing electrical properties of carbon nanotubes thin films by silicon incorporation
Authors: Faruque Ahmed Sk , Khan Mohibul , Mukherjee Nillohit
Published: December 2021

Silicon incorporated carbon nanotube (Si-CNTs) thin films was prepared by radio frequency plasma enhanced chemical vapor deposition technique. Tetraethyl orthosilicate solution was used for incorporation of silicon in CNTs thin films. Energy dispersive X-ray analysis shows that the silicon atomic percentage was varied from 0 % to 6.1 %. The chemical binding energies of carbon and silicon were analyzed from X-ray photoelectron spectroscopy data. The various peaks at ~531 eV, ~ 285 eV, ~155 eV and ~104 eV was observed in the XPS spectra due to the oxygen, carbon and silicon respectively. Surface morphologies of Si-CNTs thin films have been analyzed by field emission scanning electron microscopy, which revels that the length of the silicon incorporated carbon nanotubes ~500 nm and corresponding diameter ~80 nm. The room temperature electrical conductivity was increased whereas the activation energy was decreased with the increase of atomic percentage of silicon in Si-CNTs thin films. The room temperature electrical conductivity was increased from 4.3 × 103 to 7.1 × 104 S cm−1 as the silicon atomic percentage in Si-CNTs thin films increases from 0 to 6.1 % respectively.
Talking Hawking
Authors: wozbot1982  , MichaelJamesFa2
Published: December 2021

Some Twitter comments in response to the review of the book Hawking Hawking: the Selling of a Scientific Celebrity by Charles Seife.
Magnetization process of the S = 1/2 Heisenberg antiferromagnet on the floret pentagonal lattice
Authors: Furuchi Rito , Nakano Hiroki , Todoroki Norikazu , Sakai Toru
Published: December 2021

We study the S = 1/2 Heisenberg antiferromagnet on the floret pentagonal lattice by numerical diagonalization method. This system shows various behaviours that are different from that of the Cairo-pentagonal-lattice antiferromagnet. The ground-state energy without magnetic field and the magnetization process of this system are reported. Magnetization plateaux appear at one-ninth height of the saturation magnetization, at one-third height, and at seven-ninth height. The magnetization plateaux at one-third and seven-ninth heights come from interactions linking the sixfold-coordinated spin sites. A magnetization jump appears from the plateau at one-ninth height to the plateau at one-third height. Another magnetization jump is observed between the heights corresponding to the one-third and seven-ninth plateaux; however the jump is away from the two plateaux, namely, the jump is not accompanied with any magnetization plateaux. The jump is a peculiar phenomenon that has not been reported.
Unconventional non-Fermi liquid properties of two-channel Anderson impurities system
Authors: Tsuruta Atsushi , Miyake Kazumasa
Published: December 2021

A theory for treating the unconventional non-Fermi liquid temperature dependence of physical quantities, such as the resistivity, in the Pr-based two-channel Anderson impurities system is developed. It is shown that their temperature dependences are essentially the same as those in the pure lattice system except for the case of extremely low concentration of Pr ions that is difficult to realize by the controlled experiments. This result is consistent with recent observations in diluted Pr-1-2-20 system Y1−x
Pr
x
Ir2Zn20 (x = 0.024, 0.044, 0.085, and 0.44) reported in Yamane et al (2018) Phys. Rev. Lett.
121, 077206, and is quite different from that in the case of single-channel Anderson impurities system in which the crossover between behaviors of the local Fermi liquid and heavy Fermi liquid occurs at around moderate concentration of impurities as observed in Ce-based heavy fermion system La1−x
Ce
x
Cu6.
Higher-order synchronization on the sphere
Authors: Lohe M A
Published: December 2021

We construct a system of N interacting particles on the unit sphere

S

d
−
1

in d-dimensional space, which has d-body interactions only. The equations have a gradient formulation derived from a rotationally-invariant potential of a determinantal form summed over all nodes, with antisymmetric coefficients. For d = 3, for example, all trajectories lie on the two-sphere and the potential is constructed from the triple scalar product summed over all oriented two-simplices. We investigate the cases d = 3, 4, 5 in detail, and find that the system synchronizes from generic initial values for both positive and negative coupling coefficients, to a static final configuration in which the particles lie equally spaced on

S

d
−
1

. Completely synchronized configurations also exist, but are unstable under the d-body interactions. We compare the relative effect of two-body and d-body forces by adding the well-studied two-body interactions to the potential, and find that higher-order interactions enhance the synchronization of the system, specifically, synchronization to a final configuration consisting of equally spaced particles occurs for all d-body and two-body coupling constants of any sign, unless the attractive two-body forces are sufficiently strong relative to the d-body forces. In this case the system completely synchronizes as the two-body coupling constant increases through a positive critical value, with either a continuous transition for d = 3, or discontinuously for d = 5. Synchronization also occurs if the nodes have distributed natural frequencies of oscillation, provided that the frequencies are not too large in amplitude, even in the presence of repulsive two-body interactions which by themselves would result in asynchronous behaviour.
Multimodal deep learning for biomedical data fusion: a review
Authors: Stahlschmidt Sören Richard , Ulfenborg Benjamin , Synnergren Jane
Published: December 2021

Biomedical data are becoming increasingly multimodal and thereby capture the underlying complex relationships among biological processes. Deep learning (DL)-based data fusion strategies are a popular approach for modeling these nonlinear relationships. Therefore, we review the current state-of-the-art of such methods and propose a detailed taxonomy that facilitates more informed choices of fusion strategies for biomedical applications, as well as research on novel methods. By doing so, we find that deep fusion strategies often outperform unimodal and shallow approaches. Additionally, the proposed subcategories of fusion strategies show different advantages and drawbacks. The review of current methods has shown that, especially for intermediate fusion strategies, joint representation learning is the preferred approach as it effectively models the complex interactions of different levels of biological organization. Finally, we note that gradual fusion, based on prior biological knowledge or on search strategies, is a promising future research path. Similarly, utilizing transfer learning might overcome sample size limitations of multimodal data sets. As these data sets become increasingly available, multimodal DL approaches present the opportunity to train holistic models that can learn the complex regulatory dynamics behind health and disease.
Folding the unfoldable: using AlphaFold to explore spurious proteins
Authors: Monzon Vivian , Haft Daniel H , Bateman Alex
Published: December 2021

Motivation

The release of AlphaFold 2.0 has revolutionized our ability to determine protein structures from sequences. This tool also inadvertently opens up many unanticipated opportunities. In this article, we investigate the AntiFam resource, which contains 250 protein sequence families that we believe to be spurious protein translations. We would not expect proteins belonging to these families to fold into well-ordered globular structures. To test this hypothesis, we have attempted to computationally determine the structure of a representative sequence from all AntiFam 6.0 families.

Results

Although the large majority of families showed no evidence of globular structure, we have identified one example for which a globular structure is predicted. Proteins in this AntiFam entry indeed seem likely to be bona fide proteins, based on additional considerations, and thus AlphaFold provides a useful quality control for the AntiFam database. Conversely, known spurious proteins offer useful set of quality controls for AlphaFold. We have identified a trend that the mean structure prediction confidence score pLDDT is higher for shorter sequences. Of the 131 AntiFam representative sequences <100 amino acids in length, AlphaFold predicts a mean pLDDT of 80 or greater for six of them. Thus, particular care should be taken when applying AlphaFold to short protein sequences.

Availability and implementation

The AlphaFold predictions for representative sequences can be found at the following URL: https://drive.google.com/drive/folders/1u9OocRIAabGQn56GljoG1JTDAxjkY1ro.

Supplementary information

Supplementary data are available at Bioinformatics Advances online.