bluuebunny/crossref_metadata_2025 huggingface dataset:
Pathways toward Sustainable Architecture: Green Architecture and Circular Built Environment
Authors: Aliamin Y
Published: August 2021

This paper examines the extent to which green architecture (GA) and circular built environment (CBE) methodologies and practices contribute to and operationalize sustainable architecture within the context of the UN Sustainable Development Goals. Drawing from mainly recent literature on various approaches, interpretations and definitions of GA and CBE, this article identifies key themes, sub-themes and aspects and their respective relationships to the social, environmental and economic dimensions of sustainability. Impressions of GA and CBE on a triangular “canvas” of sustainability provide a visualization of not only similarities and differences between the two pathways, but also gaps toward sustainability. Finally, the findings suggest that a more integrated, balanced approach is necessary to accelerate the greening of architecture in a quest for sustainable livelihood, fairness, and viability, for all.
A study of user’s preferences of public library in Jakarta, Indonesia
Authors: Lestari A N , Nurdiani N , Katarina W
Published: August 2021

This paper represents the study of public library to accommodate the user’s activity in library. The study is aimed to investigate the standards of public library and how to accommodate user’s activity by providing the space based on user needs. This study was done with descriptive method. The result showed the most thing users do in public library that useful for designing a children’s library and public library base on user’s needs and their preferences.
The application of modular architecture on apartment buildings
Authors: Nurdiani N , Katarina W , Putra R R
Published: August 2021

Housing crisis become one of the world problems, where many people cannot afford a decent shelter. This problem is mostly experienced by young people, where young people have a middle-level income, so they feel it difficult to get suitable housing for them and their needs. Research using descriptive methods with literature study approach. The study is aimed to provide affordable housing for young people with developing financial condition. The aspect to be considered is about how the application and method of modular architecture can provide affordable housing for young people in the form of vertical housing or apartment. This study will discuss about a comparison between modular and conventional construction and the impact of applying modular architecture to apartments to produce affordable apartment units. The results of this study discuss about how the influence of modular architecture to provide an affordable apartment.
Hybrid ventilation systems on different climate
Authors: Soebiyan V
Published: August 2021

The building sector has an important factor in contributing to CO2 emission causes of global warming. The previous study showed that Heating, Ventilation and Air conditioning (HVAC) is the most dominant factor in building energy use. Reducing the heating or cooling load of buildings is the key for energy efficient building. The principle of hybrid ventilation is combining two different ventilation systems to reach thermal comfort, IAQ and reduce energy consumption. This paper review a hybrid ventilation (HV) system that applied on different location that refer to different climates. This paper conducted through literature review and brief discussion on system applied, the result and the background climate. The result show, based on the climate, there’s a different hybrid ventilation system applied due to their effectiveness. In this study, in the temperate climates the HV can save energy up to 60-70%, hot arid 50% and warm humid 28%.
Skylight study for Santa Market in South Jakarta
Authors: Bonaparte B V , Prawata A G , Wizaka W
Published: August 2021

This paper presents the study of using skylight as a way of giving access to daylight in a public market. Daylighting in this type of building is mainly important in order to achieve visual comfort while also minimalizing the glare effect. The Indonesian’s Ministry of Health also stated that every public market has to achieve the minimum 100 lux of luminance. The particular study is aimed to investigate the most optimum skylight strategy to create adequate daylighting inside the building. This aspect is necessary since the application of skylight will directly affect the luminance below it. The steps of study are as follows: (1) to study the optimum daylight illuminance for public market, (2) to study the skylight system applicated in Indonesia, and (3) to study the ratio of skylight openings to floor dimensions
Solar Radiation Study of Office Building Shapes at a Bussiness District in South Jakarta
Authors: Setiawan D. , Azmi M A
Published: August 2021

Setiabudi area is a business district located in South Jakarta and is one of the business and office centers in Jakarta. With the development of the economy in Jakarta, the need for office buildings has increased. Electricity usage in the building sector reached 41% and is the biggest sector in consuming energy. The cause of excessive use of electricity is the use of AC. This is influenced by the level of solar radiation to the building. With the increasing solar radiation, building’s OTTV became out of standard. According to Governor Regulation No. 38/2012 OTTV for buildings may not exceed 45 watts / m2. This Electricity usage can be minimized by reducing solar radiation to the building, thus reducing the power usage of AC usage. This paper presents the study of different building shapes. The study is aimed to investigate the impact of building shapes to reduce solar radiation. The steps of study is as follows: (1) analyzing the site, (2) Making the alternatives of building shape (3) Solar radiation simulation.
A Study of Vertical Landscape Application for Apartment in Jakarta
Authors: Az-Zahroh S , Mila Ardiani Y
Published: August 2021

Jakarta as the capital city of the country is the center of business administrative with high population and density and keeps growing. This resulted in the limited amount of land available for housing. One solution is to builds an apartment which is a vertical residential building that can accommodate many heads of households. In addition to limited land for residentials, there is also less land for green open space. Greening can be entered in apartments vertically with the application of vertical landscape. Vertical landscape is applied by utilizing vertical spaces in the apartment, can reduce ambient air temperature, reduce the heat of sunlight, absorb dust and pollution, and increase the aesthetic value. Therefore, the design of the apartment with the application of vertical landscape is needed to produce a vertical residential building with a comfortable and ideal environment to live in.
Project Evaluation and Review Technique (PERT) Analysis in the renovation project of the Church of St. John the Evangelist, Jakarta
Authors: Mariana Yosica , Wijaksono Sigit
Published: August 2021

The renovation of the St. Yohanes Evangelist Church project located on 197, Melawai Street Kebayoran Baru, Jakarta with a building area about 1480.9 m2 was chosen as a research object because the Church Construction Committee wanted to accelerate the renovation project from 2 years 5 months targeted to 1 year 5 months. This is because the Church of St. John the Evangelist as a place of worship can be immediately used again. The PERT method can be used to manage projects more efficiently and effectively; to be able to know the possibility of accelerating the duration of the project carried out on activities in the critical path and the shortening of the duration of each work on each alternative is equalized. In this study, the critical path compression step of the network using Microsoft Project and the results of the Project Evaluation and Review Technique (PERT) method, obtained a probability of 99.88%, so the renovation project of Saint John Evangelist Church can be an accelerated project to 1 year 5 months.
Landscape Transformation: Exploring Operations in The Traditional Practice of Brickmaking
Authors: Suryantini R , Atmodiwirjo P , Yatmol YA , Harahap MMY
Published: August 2021

This paper investigates the landscape transformation driven by the traditional brick making practice, arguing that brickmaking is a dialectical interaction between the landscape and the particular operations conducted by craftsmen across landscapes. Yet the discussion of the traditional practice of brickmaking itself has not been significantly valued as an important operation that drives the process of landscape transformation. The study investigates two brickmaking workshops in Central Java, Ambarawa and Brebes, that utilise the in-situ material for the brickmaking practice. Through visual documentation and interviews during field observations, it is revealed that various operations involved in the traditional brickmaking practice are utilised by the natural opportunities within the context, not only for sourcing raw material but also other activities in brickmaking. The findings also suggest that such operations demonstrate the understanding of landscape as a resource and place of transformation, reflected through its spatial and temporal arrangements. This paper arguably expands the discussion of brickmaking not only as an ecological architecture material production but as the basis of understanding dynamic occupation of a context.
Therapuetic Community (TC) as Drug Rehabiliation Center Design Principles
Authors: Abubakar F A S M , Suryawinata B A , Djimantoro M I
Published: August 2021

Drugs are something that has been fought for for a long time and rehabilitation is one way to save victims from drug dependence. Therapy and rehabilitation methods using the Therapeutic Community approach are inseparable from the therapeutic communication carried out by addiction counselors which functions to create a comfortable atmosphere for residents who are drug addicts. This study aims to determine the community therapeutic variables at the rehabilitation center that are often used by patients: bedroom, common room and dining room at the drug rehabilitation center. This research method uses a comparative method by identifying the application of the therapeutic community principles in case studies. The buildings being compared include The Chiang Mai Cabin, the Lido BNN Drug Rehabilitation and Therapy Unit, the FAN Campus, West Java, and the Regional Mental Hospital, Bangka Belitung. The results showed that each room has a quality standard that must be met in order to increase the level of patient comfort at the Drug Rehabilitation Center. These results can help architects in designing drug rehabilitation centers with a therapeutic community approach.
A Portrait of Residential Soundscape in Several Indonesian Cities
Authors: Djimantoro M I , Sakina B
Published: August 2021

The residential environment is expected to be a comfortable and safe place for the family. But often, the condition of the environment is not in line with these expectations, especially from the acoustic environment, which will affect the comfort of the occupants. The increasing comfort in residential will lead to more sustainability of the city. Thus, this paper aims to examine the existing acoustic environment in urban housing by using a soundscape approach. The soundscape is an approach to investigate the human perception of the acoustic environment in context. The research method by using a quantitative method through an online questionnaire to record the human perceptions of the sound environment in several cities in Indonesia. The result of this study is a portrait of the sound environment and the level of comfort in the city. This research can be used as input for urban designers, developers, and policymakers to improve the acoustic environment in residential areas to improve the quality of the acoustic environment.
Perceived Affective Improvement Strategies for Residential Area: The Case Study of Jakarta
Authors: Djimantoro M I , Sakina B
Published: August 2021

Expectations for residential conditions are often not in line with existing real conditions. This causes stress on the residents of the residence which will have an impact on their health. This study aims to formulate a quality improvement strategy in residential areas from the soundscape approach. The soundscape is an approach that examines the relationship between humans, sound sources, and perceptions of the environment. This research methodology is quantitative by using an online questionnaire. The research results reveal dimensional differences between real and expected conditions. Based on this, a strategy is formulated that can be used to improve the quality of the residential environment. The recommendations of this research can be used by architects, urban designers, and policymakers at the sub-district and regional levels to improve the quality of the residential environment from a soundscape perspective.
The Comparison of Soundscape between Urban Residential and Gated-Residential in Indonesia
Authors: Sakina B , Djimantoro M I
Published: August 2021

Soundscape approach is one of an assessment tools for identifying acoustic environment and has an important part in shaping cities’ sustainability. In residentials, the good quality of the acoustics was expected to meet the residents expectation, in order to have a comfortable place to inhabit. But the existing condition often is contradictive with these expectations. In Indonesia there are some types of residentials with different characteristics, two of them are urban residential and gated-residential. The aim of this study was to compare soundscape between the two types of residential in Indonesia by identifying the sound sources. The most favourite and less-favourite sound sources also will be analysed. The research method used a qualitative method through an online questionnaire to identify the sound sources that perceived by respondents who lived in urban and gated-residentials in several cities in Indonesia. The result of this study shown the importance of context in shaping soundscape, especially in residentials. Different context with different acoustic environment resulting different sound sources which perceived by human in order to assess their comfort dimension in their residents.
Neighborhood and Occupant Interaction Space
Authors: Hajaty E R , Sihombing A , Ellisa E
Published: August 2021

Often occupants gather and interact in the space that is not specifically designated as a gathering space as if the area has formed a public space as a place to gather and interact. This qualitative research aims to determine how occupants form interaction spaces in a residential environment and the type of interaction space formed. The results showed that each individual has an idea to decide how they get together and interact with fellow occupants. The forming of the interaction space occurs gradually and unplanned. The types of interaction spaces are moving space, impermanent space, unexpected space, and unbounded space, which causes temporary changes in the area. The results of this study will be used for further research and can become the basis for designing sustainable housing and human social environments.
New Traditional Market based on Waste Management using 3R method (Study Case : Warung Buncit Jakarta)
Authors: Noegroho N , Tedja M , Primadi R S
Published: August 2021

Traditional Market in big cities is facing challenges from the entrants of modern markets. Uncomfortable building conditions make the traditional market gradually abandoned by the community. Therefore, renovation is needed by many markets including a market in Warung Buncit Jakarta. Generally, a traditional market faces a major problem related to how to manage its waste. Busy market activities every day produce a lot of waste, if waste is not managed properly, then it becomes one of the factors that can damage the environment. This paper discusses the Warung Buncit market renovation design that involves how to manage waste from the beginning of planning phases. The existence of animal traders is the starting point how waste is managed. The purpose of waste is recycled is to changed it as animal feed. The problem arises is where the location of the waste process area in this market, where its land is small and how the design based on analysis of its space programming. By placing the waste treatment area inside the building, the new market design is expected to be a model of how traditional markets in Jakarta are renovated based on waste management.
Redevelopment Bus Terminal based on Sustainable Transportation, Study Case : Kampung Melayu Terminal in Jakarta
Authors: Noegroho N , Tedja M , Delonix AJ
Published: August 2021

This research shows a study related to sustainable economic aspects in a bus terminal. This research is also based on the background of the increasing interest of the people of Jakarta related to the use of public transportation. This continues to the need for government anticipation related to the design that can accommodate the needs of the use of public transportation by the community. Seeing that, arises the problem of facilities and management on the terminal site in general. Departing from that problem, there needs to be a fundamental answer, namely the existence of investment from cooperation between the government and the private sector related to the development of terminal sustainability. Therefore, this research will discuss the feasibility study of investing in the terminal in order to get the highest profit to be able to support the quality of the terminal. This is also supported by government discourse related to cooperation programs with the private sector related to and terminal development. This research was conducted with interviews, observations, and quantitative calculation analysis related to terminal development investment.

After analyzing the sustainable economic aspects, it will be concluded that the variables that form the basis and benchmarks in the terminal design later.
Application of Green Design based on Smart Living on Redesign Office of Notary in Malang, East Java
Authors: Avida C , Primadani T I W , Kurniawati H , Chrysilia S , Agustina I A
Published: August 2021

In the hustle of economic activity in modern urban lifestyle, require employees to work indoor from morning until evening. It could rise the stress level and affecting their work performance. This study aims to determine the basic aspects for redesigning a notary office interior with the green design concept and smart living features that support confidentiality and professionalism. This research methods used in this redesign are data collection, data analysis, synthesis phase, and design development. After conducting all stages of research, it is concluded that green-design with smart living concept planned for a notary office could bring a positive effect such as reduces global warming and employee’s stress level, this type of design can also stimulate visitors to apply the same concept in their residences.
A study on the quality of natural ventilation in Jakarta traditional market
Authors: Setiawan D , Shafira K
Published: August 2021

This study aims to determine the components of natural ventilation needed in traditional markets that have been built in Jakarta. This is an important matter to be processed regarding natural ventilation in the influence of the thermal comfort of market users when doing activities. This study uses quantitative methods to analyze the precedents of traditional markets that have been built in Jakarta. Natural ventilation components that pay attention to building shape, building orientation, size and location of inlets and outlets, vegetation, and average wind speed as a form of optimizing natural ventilation in traditional markets. The steps of this research are as follows: (1) conducting a numerical assessment of each precedent with natural ventilation components as a measure of the quality of traditional markets, (2) conducting a building mass study by simulating it to Autodesk Flow Design software (3) providing design recommendations to improve natural ventilation quality in traditional markets.
A study of natural ventilation for traditional market at Sumur Batu, Central Jakarta
Authors: Shafira K , Setiawan D
Published: August 2021

The purpose of this research is to study the application of the concept of natural ventilation in traditional market buildings in Jakarta to improve thermal comfort that can affect the convenience of traditional market users. SumurBatu Market was chosen as the object of research because it is one of the traditional markets that does not appropriate the natural ventilation standards. The results to be achieved are natural ventilation components that pay attention to the building form, building orientation, inlet and outlet sizes and locations, and vegetation as a form of optimizing natural ventilation in the market that can improve the convenience of traditional market users. The step of study are as follows: (1) to study the wind patterns on the site, (2) to study the building forms and openings locations to reach the optimum outcome of natural ventilation, (3) to study the result of simulation from several alternative design that have been made according to natural ventilation standards. The results of the analysis will be applied to the site as a form of redesign of Sumur Batu market.
A study of Playscape approach for Eco-School at South Jakarta
Authors: Setiawan D , Fabriansyah RR
Published: August 2021

The purpose of this research is to study whether the application of the playscape approach concept for natural schools in Jakarta can be integrated with ecoschool. This is done by determining the quality of the form of playing with natural components that already exist in nature schools and is fully related to the components of the playscape approach. The object of the case study chosen were two eco-schools that were active in the South Jakarta area. The results obtained are in the form of an assessment of the components of the playscape approach in the play area in both schools. With the following study steps: (1) study of building mass and outdoor play spaces in school areas, (2) study of playscape components in school play area.
The application of exterior sun shading on an office building in Kuningan Jakarta Selatan
Authors: Alaydrus FE , Wizaka W , Prawata A G
Published: August 2021

The golden triangle area marked Jakarta city as a business center. Many people interested in land and buildings in this area with one of the reasons by having a strategic location, with no exception for office spaces and buildings. Kuningan, South Jakarta is a Central Business District, which in fact is filled with skyscrapers which mostly uses reflective materials for it’s skin, makes the radiation reflected and increases the temperature in the air and also inside the building. One of few strategies that is effective to prevent heat from radiation is to use exterior sun shading. The method used in this paper is quantitative approach from the simulation results using software to obtain the solar radiation values to determine the ideal sun shading types to be used in the East and West side of the building. The result of this research is the eggcrate and horizontal louvers are the ideal types of exterior sun shading to be used in the East and West side of the building in Kuningan, South Jakarta.
Space and Cultural Behaviour : Deconstruction of Stage ideas in Batak Tribal Traditional Houses
Authors: Bobby Saragih JF
Published: August 2021

In Batak tribal community the idea of dwelling permanently is influenced by labour, social, culture and religion. Territorial behaviour can be seen clearly patterned from the Batak community dwelling, each settlement unit, calls it Huta, attended by clan. Previous researchers believed that the presence of a stage in some traditional houses was more due to symbolic meanings or cosmological ideas. A traditional Batak Toba house represents cosmological ideas of their inhabitants. The space for animals in the substructure symbolizes the underworld. The living area that is raised on stilts is the people’s place that represents the middle world. (Hanan, et all 2015). The behaviour of the Batak culture seems to be the main reason for the presence of the stage in traditional Batak house. Research with an ethnographic approach shows that phenomena to meet socio-cultural needs must be adopted in the spatial arrangement of dwellings. In traditional Batak House, the stage in the house is a strategy to fulfil socio-cultural behaviour in community life. In the Batak culture, a clan is representative of a power, self-esteem is important. The presence of a stage where the buffalo is placed is provided in every house design. The idea of stage in the traditional Batak traditional house is a production space.
Development of Tourist Village with the Implementation of Experiential Landscape in Pari Island
Authors: Leonady W M , Mariana Y , Himmayani V
Published: August 2021

Tourist Village is defined as integration between attractions, accommodation, and supporting facilities presented in a community life structure that integrates with applicable procedures and traditions. The purpose of the design of the Tourist Village is to make Pari Island play an economic generator that will help increase the rate of economic growth in Kepulauan Seribu. Moreover, the design of the Tourist Village also applies Experiential Landscape theory which aims to develop the potentials in Pari Island. The theory of Experiential Landscape covers aspects of the Center, Direction, Transition, and Area that will influence the design concept of the spatial zone of Tourist Village. The result showed that Tourist Village would be divided into several zones. Those zones are public, semi-public, private and service zones
OTTV based shading devices optimization for multi-storey building in tropical Jakarta
Authors: Irvandi M , Soebiyan V , Tomasowa R
Published: August 2021

Energy conservation efforts are being carried out by countries in the world as a result of energy crisis. The efforts are carried out in various aspects including in an office building that tends to use a large amount of energy. Based on regulations from the Jakarta Green Building, the OTTV standard for the city of Jakarta is 45 W/m2. To achieve the ideal OTTV value, efforts are needed on building to meet the standards which is applying shading devices. This method of study uses quantitative methods by simulating OTTV on the building envelope using the OTTV Calculator from the Jakarta Green Building. The simulation produces an ideal and effective shading device design in reducing the value of OTTV in buildings.
The Prospect of Implementing Circular Economy of Solid Waste in Small Islands: A Case Study of Karimunjawa Islands District, Central Java-Indonesia
Authors: Argo Teti A , Rachmawati Yulida
Published: August 2021

Circular Economy (CE) is increasingly used waste management concept especially in transition nations to transforms linear into a circular concept of waste production. CE sees waste as secondary raw material for re-production. Globally, CE has been studied and practiced in recent years. However, there are still few studies related to small islands. The characteristics of solid waste in small islands differ from the one on the Main Island, such as how solid wastes generated and the typology of solid waste. Karimunjawa Islands District is one of the small islands in Indonesia that has begun to experience environmental problems because of the excessive amount of solid waste. This study aims to identify the implementation of CE in small islands. This study was conducted by literature study, questionnaire, observation, interview with local stakeholders, and forum group discussion. The result revealed that there are leaks in macroeconomic aspects from manufacturing activities to consumption activities as well as market failures from consumption activities to waste disposal. It is indicated that waste management in small islands can be sustainable and independent after closing loops/leaks by procuring technology, setting clear regulations related to solid waste management, performing effective waste transportation, and holding house-to-house socialization regarding sustainable behavior.
Integrating Multi-Hazard Risk Analysis into Spatial Planning for Small Island: Study Case of Sangihe Island
Authors: Hadianti Atrida , Ulinnuha Hilmiyati , Heliani Leni Sophia , Sarwadi Ahmad , Kurniawan Adhy , Budisetiawan Juswono , Suhubawa Latif , Suryanto Wiwit , Pratama Cecep , Mutaqin Bachtiar Wahyu , Nayati Widya , Bayumurti Yosi , Ilahi Ridho , Widjonarko Senoaji Y
Published: August 2021

Small island regions are facing disaster risks due to their exposure to various hazards, e.g. floods, landslide, and earthquake. In order to achieve long-term disaster resilience, one of the significant strategies is applying spatial planning based on disaster risk reduction. Methods for multi-hazard risk assessment and risk analysis have been broadly discussed, nevertheless, its implementation in spatial planning is inadequate. In this study, we conducted a multi-hazard risk mapping of Sangihe Island and reviewed its spatial plan. It is identified that disaster risk analysis hardly meets its standard in consequence of insufficient secondary data availability. Also, the spatial plan merely utilizes hazard maps for consideration, not yet as risk analysis, resulting in allocating vital elements in high-risk areas. Hence, secondary data support is necessary for accordance with the needs of standardized risk analysis and is updated regularly. Furthermore, integration of risk analysis into spatial planning is required to determine the direction of development, which not only reduces exposure to hazards but emphasizes more towards the capacity building to reduce vulnerability.
Study of The Quality and Status of Water Quality on Reservoir Water Management Efforts Using a Dynamic System Approach (Case Study: Bozem Morokrembangan)
Authors: Karnaningroem Nieke , Paitaha Emelya Eka Safitri
Published: August 2021

Morokrembangan bozem is one of the largest bozem in Surabaya with an area of ± 78.69 Ha which is designated as a flood controller in the city of Surabaya. However, the condition of Morokrembangan bozem experienced a decrease in water quality due to the inclusion of pollutant loads originating from waste discharges carried by the drainage channels entering Bozem Morokrembangan. The research can be useful for Surabaya Government to return the function of Morokrembangan bozem. The results showed that the water quality status of Morokrembangan bozem was moderately polluted with the highest pollution load coming from Kali Purwodadi with COD concentration of 28,283 mg / L, BOD5 7,491 mg / L, Ammonia 6,18 mg / L, and Total Phosphate concentration of 6.18 mg / L. The total pollution load that enters the Bozem comes from settlements averaging 99.87 Tons/year and industry averages 0.0028 Ton/year with a total waste load based on sub-dynamic simulation models an average of 26,923 Tons/year. Management efforts can be carried out using an optimistic scenario by building a communal WWTP in the Krembangan District that does not yet have a WWTP and implementing a 3R program to reduce solid waste (garbage), make efforts to manage environmentally friendly land, and increasing community participation.
The selection of aquaculture site based on chlorophyll-a concentration at Sidoasri Bay, Sendang Biru, Malang regency, East Java
Authors: Armono Haryo Dwito , Djuang Anastasia Amelia Ananda , Zikra Muhammad
Published: August 2021

Currently, offshore fish farms are using floating net cages or offshore aquaculture is one alternative to support the fisheries sector in Indonesia. Several requirement parameters must be met before the installation of floating cages for the sustainability of the fish culture. One of which is the distribution of chlorophyll-a in the waters. In this paper, Landsat 8 satellite imagery was collected to evaluate the chlorophyll-a concentration in the waters of Sidoasri Bay, Sendang Biru, Malang regency, East Java. The concentration of chlorophyll-a will be used as indicators to select a suitable location for offshore aquaculture. Based on the satellite image observations indicated that at Sidoasri Bay, there are two locations appropriate for floating cages. The location is generally suitable for floating cages installments with an average score of 2.26 on a scale of 3.
Conceptualising Governance Approach on Stakeholders Participation and Collaboration in George Town Festival, Penang, Malaysia
Authors: Ng Patricia S.K. , Rahman Suraiyati
Published: August 2021

Governance is defined as the reflexive self-organization carried out with multi-discipline processes and regulatory mechanisms that help in promoting the development of numerous policies and issues area including tourism planning. The primary concern is lack of focus on understanding the participation process and collaboration among key stakeholders in the context of special event projects especially in tourism event management. The article attempts to examine the participation and collaboration processes in conducting George Town Festival. A qualitative method which includes an in-depth interview with key stakeholders was adopted in the case study and thematic analysis was conducted. The findings revealed that process of participation and collaboration in George Town Festival event had contributed to innovative channels of communication, openness public participation, selection of most committed and proactive performers.
Phytoplankton in Lake Mainit, Philippines
Authors: Senados Teresita P. , Gomez Bernard C. , Ratunil Virgilio B. , Dela Peña Jayson D. , Gamboa Gregorio Z. , Borja Emmylou A. , Adlaon Mauricio S. , Odtojan Medielyn M.
Published: August 2021

The study determined the composition, abundance, and distribution of phytoplankton in Lake Mainit. Plankton samples were collected in eight sampling stations four times in 2018. A total of 26 phytoplankton taxa in four groups – Bacillariophyceae/Myxophyceae, Chlorophyceae, Cyanophyceae and Euglenophyceae were identified. Aulacoseira was ranked as the most abundant taxa, followed by Zygnema, Fragilaria, Trichodesmium, and Ulothrix. ANOVA revealed no significant (P < 0.05) difference in the number of phytoplankton between the eight stations during the first sampling. In the second sampling, Bunga showed a significantly (P < 0.05) lower number of phytoplankton than the other stations. The third sampling also showed no significant (P < 0.05) difference in the number of phytoplankton between stations. During the fourth sampling, Tagbuyawan had by far (P < 0.05) the highest number of phytoplankton. Species diversity (H’) of phytoplankton was stable at Magticao, Jaliobong, Dinarawan, Kalinawan, and Bunga. The dominance of some species (Aulacoseira, Fragilaria, and Zygnema) affected the diversity and distribution of plankton. Spectrophotometric readings recorded an average Chl-a of 0.75 µg/L. The lake was still considered oligotrophic. Remediation measures and further studies on the lake towards the primary variation of plankton are recommended. Management efforts should be strengthened to support the sustainability of life in the lake.
Degradation of enrofloxacin by photocatalysis using titanium dioxide nanomaterials
Authors: Tien Nguyen Thi Cam , Huyen Trinh Thi Bich , Thuy Nguyen Thi , Thanh Dang Van , Thanh Nguyen Trung , Huy Nguyen Nhat
Published: August 2021

This work evaluates the ability to degrade Enrofloxacin (ENR) in synthetic high concentration wastewater by the photocatalytic method using pure TiO2nanomaterials. The material properties, including morphology, crystalline structure, UV-Vis absorption, and surface acidity-basicity, were also characterized. The treatment efficiency of 50 mgENR/L reached over 80% after 2 h of UVA irradiation, at pH 6 and 1 gP25/L. The antibacterial level of ENR after treatment was checked byBacillus subtilisactivity. After treatment, the activity of ENR residue was no longer sufficient to cause inhibition of the bacteria while the degraded product was not toxic to it. The research results show that the photocatalysis material has a good ability to degrade ENR as well as other antibiotic residues in the water environment.
Development of Natural Coagulant for Turbidity Removal Created from Marine Product Solid Waste
Authors: Siswoyo Eko , Tanjung Dian Suryani , Jauhari Hamidil Jalaly M
Published: August 2021

The presence of scallop shells, one of the marine products, increases the problem of solid waste disposal. This material is disposed to landfill without proper use, making it necessary to develop natural coagulant made from scallop shells. This research aimed to investigate the ability of scallop shells as a natural coagulant to remove turbidity. The scallop shell was used to produce chitosan, then adopted as a natural coagulant compared to a commercial product. Water turbidity, river water, and batik wastewater were examined using different coagulant doses, solution pH, and turbidity concentration. Based on data from this study, scallop shell-based chitosan has a high ability to reduce turbidity concentration in water. To remove artificial turbidity in water (14 NTU), the optimum coagulant dose was 150 mg/L and solution pH was 6. The ability of natural coagulants to remove river water turbidity (81 NTU) and batik was 72% and 87% respectively. The performance of commercial coagulant to remove artificial turbidity, river water, and batik wastewater was similar to the natural coagulant, making this novel natural coagulant a promising coagulant for water and wastewater treatment in the near future. Furthermore, massive production of natural coagulant can also solve the problem of scallop shell solid waste generation.
Marine debris monitoring in the coastal area of the District of Banyuwangi, Indonesia: Characterization of the debris type and composition
Authors: Nurhayati E. , Tangahu B.V. , Mahardini I.R. , Berlianto M. , Yuliawati A.A.
Published: August 2021

This study was aimed to monitor and collect the data on marine debris in the coastal area of the District of Banyuwangi, Indonesia. The survey was conducted in two periods, i.e., July and October of 2020 in Cemara Beach and Syariah Beach. The coastal marine debris sampling was done in accordance with the guideline published by Indonesian Ministry of Environment and Forestry. In terms of number of debris/m2, the result shows that plastic was the dominant coastal marine debris. The density of macro plastic and meso plastic debris in July 2020 are 1.96 – 5.44 debris/m2 and 0.28 – 0.80 debris/m2, respectively; while in October 2020, the density of macro plastic and meso plastic debris are 1.24 – 3.24 debris/m2 and 0.56 – 2.24 number of debris/m2, respectively. The information on the characteristics of marine debris could assist the authority in formulating the proper strategy to overcome the problem as well as support the government in planning a good sustainable coastal management.
Case study: gas engine heat pump (GEHP) as a water heater applied in bathroom
Authors: Zhang Mingxiao , Ma Zhenxi , Cai Liang
Published: August 2021

This paper investigates the suitability of sewage source gas engine heat pump (SSGEHP) as a retrofit application for a public shower facility. The system performance is evaluated by primary energy ratio (PER) based on a practical example. The performance analysis indicates that the PER of SSGEHP varied in the range of 1.4 to 1.9, showing good potential in primary energy saving (as high as 69%) and emissions reduction compared to gas boiler system. It only needs 1.6 years to recover the initial investment by using the SSGEHP water heating system to reform existing the gas boiler. Therefore, the SSGEHP may be a promising retrofit scheme for the existing gas boilers.
Analysis of Energy Consumption Level and Influencing Factors of Highway Service Area
Authors: Shi-yong Zhao , Xian Rong , Li-chao Jiao , Jun-lin Hao
Published: August 2021

Highway service area has the characteristics of large passenger flow, complex system equipment, diversified operation management, centralized energy use and complex influence mechanism, which results in the difference of energy consumption between service area and conventional public buildings, but the existing facilities and operation management mode of service area have not reached the optimal state, so it still has high energy-saving potential. Based on the analysis of the principal component analysis, the influencing factors of energy consumption of highway service area are analyzed, the main influencing factors of energy consumption of highway service area are selected, and the close relationship between the annual total energy consumption of highway service area and the influencing factors such as building scale, traffic flow and human flow is determined. Finally, by means of multiple regression analysis, the low-impact factors are further eliminated, and the functional relationship between the total energy consumption and the influencing factors is determined and verified, which is helpful to provide the basis for the service area to adopt the corresponding energy-saving measures.
Study on the mechanism and treatment measures of tunnel mud outburst induced by water leakage of pipelines
Authors: Xiaoteng Liang , Zhangru Shi
Published: August 2021

In order to study the mechanism and treatment measures of urban pipeline leakage inducing mud outburst in tunnels, basing on the case of tunnel mud outburst accidents, this paper analyze the mechanism of urban pipeline leakage inducing mud outburst in tunnels, and propose reasonable surrounding rock reinforcement technology and auxiliary construction method. The results show that the synergistic effect of clay properties and pipeline leakage has the most significant impact on this tunnel mud outburst, while the impact of support measures and auxiliary construction methods on this tunnel mud outburst is manifested by lack of human vigilance.Based on the analysis of the mechanism of urban underground pipeline leakage inducing mud bursting in the tunnel, comprehensive treatment measures inside and outside the tunnel are adopted to effectively reduce the moisture content of the surrounding rock of the tunnel, improve the mechanical characteristics of the surrounding rock of the tunnel, and effectively guarantee the tunnel’s subsequent excavation.
Research on Reinforced Concrete Beam-Steel Tube Concrete Column Node
Authors: Yang Xiaohong , Xie Yongping , Zhang Li , Guo Jianming
Published: August 2021

The steel pipe concrete column has been applied in construction projects. The prefabricated assembly era has also been quiet, but there is little research on steel pipe concrete columns and pre-concrete beam nodes. This paper summarizes the articles on concrete-filled steel tubular column and beam joint, and puts forward a kind of concrete-filled steel tubular column and precast beam joint strengthened by U-shaped plate and stud. The joint has clear force transmission, convenient site construction and saves materials, which provides reference for the joint form of reinforced concrete beam and concrete-filled steel tubular column.
Experimental Study on Base Piles Bearing Capacity of Qilu Yellow River Bridge
Authors: Dong Pingsheng , Wang Xiang , Wang Hu
Published: August 2021

Qilu Yellow River Bridge is located in Jinan City, Shandong Province. The main bridge adopts bored pile foundation with high design bearing capacity. In order to ensure that the bearing capacity of single pile meets the requirements and ensure the safety of the bridge, the double load boxes O-cell test pile method is used to test the bearing capacity of pile before and after grouting. According to the soil layer property around pile, the double load boxes can be loaded optionally and solve the problems in the tradition pile test. The bearing capacity of each pile section is determined. The bearing capacity of pile before grouting is 75255kN, the bearing capacity of pile after grouting is 89100 kN.
Study on maintenance time based on deterioration prediction model of main girder
Authors: Xiaoguang Wu , Miaomiao Fang , Saidong Wei , Jiaxin Liu , Fan Sun
Published: August 2021

With the increasing number of bridges in Shanxi Province, the difficulty and complexity of bridge maintenance and management tasks have increased significantly. In this paper, based on the existing prediction model, combined with the characteristics of local heavy traffic and large temperature difference environment, the prediction model of concrete carbonation, girder cracking, prestress loss and concrete shrinkage and creep is established. According to the linear law of deterioration curve, the best maintenance time of girder suitable for local characteristics is determined, which can provide guidance for later maintenance management of bridge.
Exploring the causes and repair measures of early cracks in prefabricated bridges
Authors: Suqin Han
Published: August 2021

The study aims to explore the causes of early cracks in prefabricated bridges and propose repair measures. The stude designs a test first. Analysis of the mix proportion and uneven shrinkage of concrete shows that, in concrete, the ratio of air content to water-binder is a quadratic parabola, the fly ash and water binder ratio have a linear relationship, and slurry collection ratio and the water-binder ratio is inversely proportional. The test results suggest that the cracks of bridges are caused by the decrease of relative humidity in concrete. Afterward, some corresponding repair measures are put forward to safeguard the prefabricated bridges.
Quantitative analysis of diaphragm plate caused by pedestal void of assembled box girder
Authors: Wu Xiaoguang , Liu Jiaxin , Fang Miaomaio , Sun Fan , Yan Feng
Published: August 2021

In this paper, ANSYS finite element software is used to study the influence of pedestal void on the diaphragm force of prestressed prefabricated box girder bridge. Three different working conditions of no support void, side span support void and middle span support void were simulated respectively, and then the principal tensile stress and vertical deflection of each diaphragm key point were studied under different working conditions. The results show that the support void has almost no effect on the main tensile stress and vertical deformation of the diaphragm in the mid-span, but has a significant effect on the diaphragm at the end of the beam. The influence of the middle span support void on the main tensile stress of the diaphragm is larger than the opposite span support void. The effect of side-span bearing void on the vertical deflection of diaphragm is greater than that of mid-span bearing void. The void of the support will lead to the uneven force of the whole structure and finally affect the stability of the whole structure.
Stability Analysis of Prefabricated Steel Structure Building Based on Pushover Method
Authors: Chen Jihuan , Yang Zhiwei , Xu Shuang
Published: August 2021

Prefabricated steel structure building is a kind of structural system which is widely used in recent years. It is very necessary to study the stability of it by Pushover method. Through the investigation of a building under construction in Hebei Province, China, the finite element analysis software SAP2000 is used to establish numerical simulation models of four kinds of staggered truss steel structure, so as to calculate its static pushover performance. It includes base shear-peak displacement curves, performance points and plastic hinge development. The main conclusions are as follows: the terminal shear and displacement of the hybrid staggered truss structure are obviously better than that of the Vierendeel staggered truss structure in the process of pushover. The base shear of the structure can be greatly increased and the overall deformation of the frame can be reduced when the side spans is set up. Until the end of the pushover, there is no plastic hinge on the column, which meets the seismic design requirements of “strong column and weak beam”, indicating that the prefabricated steel structure staggered truss system has good seismic performance.