bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of waste management in tourism area of Luar Batang Village, outside area of the Historic Old Jakarta Kota, Penjaringan District, North Jakarta
Authors: Abbas I F , Purwaningrum P , Indrawati D
Published: April 2021

Penjaringan Subdistrict is included in the tourism area of the Historic Old Jakarta Kota outside area which is a community based historical cultural tourism center with an area of ±19 Ha, consisting of 7 cultural heritage buildings. One of the cultural heritage buildings in the tourist area outside the walls of the old city is the area outside the stem area. In this tourist area there is a historic worship building in the form of a mosque. Increased tourist visits can cause problems on regional scale waste management caused by waste from tourist activities. This study aims to evaluate the existing conditions of Waste Management in Tourism Area of Luar Batang Village Outside area of the Historic Old Jakarta Kota and waste management facilities starting from source to landfill. This research was conducted through the measurement of waste generation and composition based on SNI 19-3964-1994 as a method of taking and measuring samples of urban waste generation and composition. The results of this study indicate that the generated waste is 28.5 kg/day or around 0.216 m3/day. The composition of waste in the tourist area of Luar Batang Village, Outside Area of the Historic Old Jakarta Kota shows that the biggest physical component of waste is organic with an average daily percentage of 83.30%, plastic waste of 4.05% (PET), 3.37% PP waste, and 6.40% for LDPE, as well as Styrofoam waste of 2.46%, in addition to the waste cans the trash with a percentage of 1.55% and cardboard waste of 1.43%.
The effect of mixing speed and contact time on dye removal using Cassava Peel adsorbents
Authors: Aulia S D , Wijayanti A , Hadisoebroto R
Published: April 2021

The screen printing home industry generates wastewater causing dangerous environmental pollution since it has heavy metal contents. Cassava peel is one material that can be activated and used as an adsorbent to treat the wastewater. This study aims to analyze the effect of mixing speed on dye adsorption using cassava peel waste in a batch reactor and mixed by the jar test device. In the process of making adsorbents, cassava peel was dried and carbonized in a furnace into a powder, and then it was activated using H2SO4 solution. Wastewater was contacted with the 10 gr of adsorbent then mixed in variation speed of 50, 100, 150, 200, 250 rpm and variation contact time of 30, 60, 90,120, 150 minutes. The maximum removal of 96.78% was observed in the mixing speed of 100 rpm over the 60 minute contact time. It could be concluded that organic waste such as cassava peel is a great adsorbent and resolves color pollution in the environment.
The effect of mixing speed and contact time on the process of dye adsorption using corncobs adsorbent
Authors: Pramesti K A , Kusumadewi R A , Hadisoebroto R
Published: April 2021

The home screen printing industry generally discharges wastewater directly into drainage without being processed first. By utilizing corncobs waste will reduce the amount of waste in the environment. The purpose of this study is to find out the optimum removal efficiency using corncobs in the removal of dyes. The manufacture of adsorbents using corncobs was dried and carbonized using a kiln to become charcoal powder. After the carbonization process, activated it using H2SO4. The dye adsorption process was carried out with variations in speed of 50, 75, 100, 125, and 150 rpm, variations in contact time of 0, 30, 45, 60, 90, and 120 minutes. From the results of this study it was found that the optimum conditions with a dye removal efficiency of 99.98% were obtained when the mixing speed was 100 rpm, contact time was 60 minutes, and the adsorbent dose was 10 g / L. From these results it can be said that the corncobs adsorbent is effective in removing the screen printing wastewater dye.
Characterization of ecotourism destinations in Toba Lake area with the Tourism Area Life Cycle (TALC) method and sustainability analysis
Authors: Manalu L , Manik Y
Published: April 2021

Lake Toba is one of national strategic tourism destinations which is projected to become one of the economic contributing sectors. To make the strategic programs for the sustainability of its development, detailed mapping of its characteristics is needed. This study aims to map the position of 4 destinations in Lake Toba namely Soda Water Natural Pool, Aek Nauli Forest, Tao Silalahi and Sampuran Efrata Waterfall which present the types of ecotourism and its geographical distribution. Mapping was made in the Tourism Area Life Cycle model. Criteria in mapping include attractions, facilities and services, accessibility, image of tourism object and costs or prices. Measurement of criteria is done by conducting a survey of 120 respondents representing four kinds of stakeholders are private owner, Department of Tourism, research institution and local community. The result of this study is presented that the destination of Soda Water Natural Pool is in the exploration stage, Aek Nauli Forest is in the involvement stage and Tao Silalahi and Sampuran Efrata Waterfall are in the stagnation stage. The position in tourism life cycle will be the basis in making development strategies of ecotourism in Lake Toba Area.
Analytic hierarchy process for zonation review of Sembilang National Park, Banyuasin Regency, South Sumatera Province, Indonesia
Authors: Ratmoko I A , Budianta D , Ridho R , Wildayana E , Idrus Z , Nuryamsasni N
Published: April 2021

Sembilang National Park is one of the largest wetland conservation areas in Indonesia. As a conservation area with the main ecosystem in the form of approximately 91.679 hectares mangrove ecosystem in 2003. Sembilang National Park is managed based on a zoning system that is utilized for research, science, education, supporting cultivation and tourism. At present, the zoning of Sembilang National Park consists of core zones, jungle zones, utilization zones, traditional zones, rehabilitation zones and special zones. The predetermined zones need to be evaluated because the damage to the national park is continuing, so that the primary mangrove forest area in Sembilang National Park has shrunk from 83.447 hectares in 2009 to be 70.263 hectares in 2017. The Purpose of this study is to determine the zoning of Sembilang National Park by using the analytical Hierarchy process (AHP) method. The results showed that the main criteria in determining national park zones based on ecological aspects were the presence of peat domes, typical of soil and land cover conditions. While the right social indicators are access to conservation areas and the existence of settlements.
Optimaizing nozzle position on an evaporator of absorbtion system cooling machine
Authors: Sepfitrah S , Zaiyar Z , Machdalena M
Published: April 2021

This study examines the refrigerant jet spraying system that has been mounted on the absorption system cooling machine and is optimized using a CFD (Computer Fluid Dynamic). The study was conducted on an absorption system cooling machine that had been built using an arbsorber system in the form of a LiBr-H2O solution. As an efrigerant, water circulated in the tube bundle is used. Refrigran spray patterns greatly affect the performance of the cooling machine. The more evenly distributed refrigran beam in the space between the tube bundle lattice, the more effective the process of water cooling in the tube. The adjustment of the position of the nozzles and the evaporator grille is very influential in this refrigeration cycle. From the results of the initial conditions simulation of the placement of the nozzles with the arrangement of the tube bundle that there is fluid flow in the space between the lattice is not spread evenly. After being modified using the CFD software, an effective formation of tube bundle arrangement, evaporator lattice, and nozzle position is expected so that the refrigeration cycle is expected to go well.
Linkages between Solo-Selo-Borobudur as the Jawa Tengah Provincial tourism strategic area
Authors: Pinanigas A J , Fatimah E , Ramadhani A
Published: April 2021

Provincial Strategic Areas (PSA) are areas prioritized in spatial planning because of their significantly influence on economy, socio-culture, or environment perspectives. Solo-Selo-Borobudur is designed as one of Central Java PSAs. This PSA is expected to become a tourism corridor area and the sub areas within the PSA are expected to be equally developed and integrated as a single entity. In fact, there is a significant difference in the number of tourists visiting the three areas, which indicates an imbalance in the level of development. This study aims to examine the level of development of each sub-area and to identify the level of linkages between them in terms of their activities. The scoring method was used to identify the level of development in terms of attraction, accessibility, amenities and ancillary services (4A) aspects. A questionnaire survey was also conducted to explore tourism behaviour in order to identify linkages between the three tourism areas. The data obtained is analyzed by using spatial descriptive method. The result of this study shows the level of development of Solo and Borobudur tourism sub-areas can be classified high level, while Selo is still low (undeveloped). The study also found that the linkage between Solo - Borobudur tourism activities was stronger than between Solo - Selo and Selo - Borobudur. As the PSA, the linkage between the three tourism areas is still low. The findings are expected to be related to differences in the level of development between the three areas.
Effect of distance of housing to airport on noise disturbances level (case: housing around Soekarno-Hatta International Airport)
Authors: Wigatiningrum R , Wiranegara H W , Luru M N
Published: April 2021

This study aims to identify the effect of distance of housing to the airport on the level of noise disturbance. The airport is an area of land or water with certain boundaries that used as a place to landing and take-off. As a vital and dynamic object, the airport’s surrounding has to accommodate its future developments and keep secure by keeping away from residential areas. And vice versa, for the convenience of its residents, these housings need to be regulated at a minimum distance from the airport. Its residents will be affected by noise due to aircraft traffic activity. Noise is unwanted sound at a certain level and time causing interference. Soekarno-Hatta International Airport was chosen considering the high intensity of aircraft traffic with large aircraft dimensions and high noise interference. Dimensions of noise disorders studied include physical disorders, communication disorders, sleep disorders, disruption of activity, and emotional disorders. This research is quantitative using a survey-questionnaire method. The number of samples was determined using the Lemeshow formula of 96 respondents. The results show that the effect of distance on the noise disturbance level for all the dimensions mentioned above is significant. This result emphasizes the need for a minimum distance limitation between housing and the airport.
Locational choice strategy: How FDI’s choice of Indonesia as an investment location towards competitiveness advantage
Authors: Wartaman A S , Kusumadewi D , Ramadhani A , Andajani R D
Published: April 2021

Globalization causes the world to appear flat without borders. Currently, business actors have the freedom to choose investment locations that can increase vantage for the company. This paper aimed to bring insight into Foreign Direct Investment (FDI)’s decision in relocating to Indonesia and the impact towards the company’s performance. The research approaches are: 1) imitating referenced companies, and 2) supply chain as variables in the selection of investment destination. This study was done in quantitative method. The population of this study was FDI companies in Jababeka Industrial Area. Partial Least Squares-Structural Equation Modelling (PLS-SEM) was chosen in statistical data processing stage. This study concluded that (i) FDI is likely to ignore imitating approach in choosing Indonesia as investment location (ii) Supply chain becomes the main consideration of FDI in choosing Indonesia as investment destination, (iii) agglomeration of similar FDI is likely to benefit organizational competitiveness and (iv) FDI that choose Indonesia as investment destination using supply chain approach gains an advantage of higher organizational competitiveness.
Activity characteristics of street vendor in royal market area, Serang City
Authors: Riani R D , Situmorang R , Supriatna Y
Published: April 2021

The purpose of this study is to examine the characteristics of street vendors, as the basis of directions for arranging street vendors in Royal Market area, Serang City. The problems often encountered by street vendors is unclear rules and law enforcement. Its also found in the Royal Market Area, as the center of a shopping district in the Serang City. The location and number of market visitors is an attraction for street vendors to do their business. Street vendors run their activities by utilizing public access to suffice the needs of life and also has a potential to providing a job opportunities. Even, if the space used for street vendors can be arranged properly, it can increase the Regional Original Revenue of Serang City. This study used a quantitative approach with survey methods, and supported by statistical-descriptive analysis techniques. The results of this study indicate that the characteristics of street vendors are dominated by street vendors who use a physical means such as the covered carts that street vendors use trade are, in theory, permanent and usually sell food and drinks, however in the Royal Market Area covered carts are used by street vendors to sell textile goods and accessories.
Place attachment in supporting the preservation of religious historical built environment
Authors: Wahyudie P , Antariksa A , Wulandari L D , Santosa H
Published: April 2021

The place attachment theory is a scientific part of the relationship between human behavior and built environment study. The built environment study explains the existence of a building and its landscape. The place attachment theory has been used in studying the relationship between human behavior with a religious and historic environment during its development. However, nowadays, this research rarely conducted and often carried out partially. As a consequence, the result analysis is only partially. This study proposed a holistically place attachment to provide a broader discourse in examining the relationship between human behavior and the built environment holistically. Moreover, place attachment theory will be used to preserve the historical religious built environment. In addition, the literature review from the previous studies and discussion methods are essential to support the research. The result shows that there is an opportunity to conduct a study of place attachment theory in supporting the preservation of the historical religious built environment. Thus, the holistic result can be obtained using the place attachment theory, which is the combination of place identity, place dependence, place affect, and place social bonding.
Analysis of soil subgrade bearing capacity for clay using laboratory testing data
Authors: Putri L D , Hakam A , Thamrin R , Yossyafra Y
Published: April 2021

Road construction failures are often caused by unsupported subgrade classification. The purpose of this study was to determine the bearing capacity of subgrade on clay using test data in the laboratory. The contribution of this study can later be a recommendation in the use of subgrade types of clay and alternative uses. One of the properties of land strength associated with roads in the California Bearing Ratio (CBR). The method used is soil physical testing and CBR testing. The soil sample used was undisturbed soil in the subgrade in Minas District, Siak Regency, Riau Province. The result showed that the clay studied was non-organic Sandy Lean Clay CL) with low plasticity based on the USCS classification table. 2.681 specific gravity, water content 29,94%, liquid limit 33.64%, plastic limit 23,67% and plasticity index 9.97%. Soaked CBR test results obtained 4.21% and included in the medium classification. The use of this type of clay soil for subgrade with the bearing capacity of CBR classification needs to be pursued with alternative improvements and soil reinforcement that can increase the CBR value to a minimum of 6%.
The mechanical behavior of mortar cement mixing with palm sugar due to exposed to heat (high temperature)
Authors: Sari N P , Olivia M , Djauhari Z
Published: April 2021

Mortars will suffer damage if exposed to high temperatures. The selection of palm sugar as an added material for building purposes resistant to high temperatures is the aim of this research. This study provides an overview of the effect of high temperatures on mortar behavior. Preparation of specimens using cube mortar with length of 5 cm and carried out treatment at room temperature for 28 days. Mortar will be furnaceat 250°C, 500°C, 750°C for 3 hours. In normal mortar, hair cracks seen at 500°C has seen this fine cracking indicates the mortar has been damaged. For heating temperatures of 750°C the crack size appears larger and deeper, the color of the mortar turns whiter and brighter, mortar has suffered severe damage. Mortars containing palm sugar 0.1%, 0.3% and 0.5% of the weight of cement did not experience cracking at 75°C, but only visible increase in pore size. The pore size is enlarged due to the gas pressure coming out of the cement matrix due to heating. Mortar with additional palm sugar still has a compressive strength of 50% at high temperatures 750°C.
The effect of adding silica fume for lightweight concrete brick in terms of strength criteria
Authors: Jusi U , Maizir H , Fadil A
Published: April 2021

Technological developments in the property sector at this time, especially on the walls are lightweight bricks. To find out the extent of the behavior of the characteristics of lightweight bricks, a study of compressive strength and absorption was carried out using materials such as cement, sand, foam agents and silica fume. Research with the addition of silica fume of 5%, 10% and 15% of the weight of cement at the age of 7 days, 14 days and 28 days based on the standard technology planning module of mortar foam material for road construction. Comparison of light brick free compressive strength from normal light brick to lightweight brick with optimum free compressive strength, namely in light brick the addition of silica fume 5%. The results of free compressive strength at the age of 7 days with the addition of silica fume 5% increased by 41% from normal lightweight brick free compressive strength. At the age of 14 days the compressive strength of light-free bricks with the addition of silica fume 5% increased by 57% from normal light bricks and at 28 days increased 41%. The lowest absorption occurs on the use of silica fume 5% with a value of 36%.
Research studies on composition of porous concrete on the sidewalk
Authors: Megasari S W , Yanti G , Zainuri Z
Published: April 2021

In infrastructure development, technology is needed that is powerful, effective, efficient in implementation time, efficient, and environmentally friendly. Porous concrete has a cavity that can flow water directly into the ground so that it can overcome the problem of water absorption. Porous concrete can be utilized in the pavement with light traffic loads such as the sidewalk. However, because porous concrete only consists of a mixture of cement, water, and coarse aggregate, porous concrete has a low compressive strength. The research is needed on the composition of porous concrete to be used on the sidewalk. Research using the ACI-522R-10 method with a variation of the ratio of cement and coarse aggregate is 1: 3, 1: 4, 1: 5, 1: 6 and cement water factor 0,30. The test results obtained the highest average compressive strength value of 16.027 MPa with an increase of 45.30% compared with no additives, as well as being in the classification of concrete brick of C quality which is suitable for the sidewalk. The results showed that an increase in the average compressive strength value along with a reduction in the amount of coarse aggregate was obtained both under conditions and with the addition of additives.
Schematic of monotonic shear test for hollow circle elements no stirrups
Authors: Dewi S H , Thamrin R , Zaidir Z , Haris S
Published: April 2021

The shear behavior of reinforced concrete beams with circular cross-sections is different from beams with rectangular cross-sections. Most shear formulations designed for circular parts are based on rectangular sections. This study aims to obtain a scheme for testing the hollow circle elements without stirrups by simple structural analysis. There were two layouts analyzed before an experiments. Layout A is an element with one hole in the middle, and B is an element with two holes at the end of the element. This study was by trial and error structural analyzed. The elements had set up with two vertical loading points and two placement points with different positions. The result is the distance between loading and placement with an equal moment. The shear force in layout B is greater than the shear force in layout A.
The effect of tire ash to the compressive strength of concrete
Authors: Harmiyati H , Dewi S H , Junaid J
Published: April 2021

The purpose of this study was to determine the effect of the addition of tire ash as a partial replacement of cement for concrete slumps. This study has experimented with cylindrical specimens with a diameter of 150 mm and a mixture length of 300 mm. It was planned to establish a cement water factor of 0.49 with the concrete compressive strength 25 MPa and a reduction plan of 60-180 mm, the percentage of tire ash substitution from the weight of cement 2.5%, 5%, 7.5%, and 10%, the cement used in this study was PCC type I cement from PT. Semen Padang. The results of the use of tire ash as a substitution showed that the greater the addition of tire ash, the greater the value of the slump obtained, meaning that the concrete produced is thinner so that it can facilitate the processing and compaction process. The use of tire ash cannot influence the increase or the same as of the concrete compressive strength and cannot be used as a substitute or reduction in the use of cement with the type I composite cement produced by PT. Semen Padang. Further research is needed on the content of the physical and chemical properties of tire ash.
The potential of polymer for enhanced oil recovery process on oil refinery: A literature research
Authors: Setiati R , Malinda M T , Sabrina J
Published: April 2021

The objective of this research is to obtain evidence that polymer can be utilized as injection fluid in Enhanced Oil Recovery process. Polymer is one of chemical compounds in Chemical Enhanced Oil Recovery (CEOR). The method utilized in this research is reference collection regarding Enhanced Oil Recovery which further observed and reviewed, especially the ones connected with polymer utilization as injection fluid. Polymer injection is a method conducted after primary and secondary recoveries processes. The clearest and most significant mechanism of polymer application is to improve sweep efficiency by decreasing thickness level and improving water injection profile. Polymer injection is a tertiary recovery step, conducted after oil can no longer be produced although the capacity only reaches 60%. This means that there is still 40% of total capacity yet to be produced. This polymer injection is commonly utilized to obtain remaining oil reserve because of its relatively simple application, low cost, and able to produce a relatively large volume of oil reserve.
The effect of applying waste cooking oil to the pore value of pavement
Authors: Alfian S , Muthia A
Published: April 2021

In this study, additive of waste cooking oil waste in the Asphalt Concrete-Wearing Course (AC-WC) mixture emphasizes the pore content of the asphalt mixture. In this study the application of waste cooking oil waste by 1%, 2%, 3%, 4%, and 5% of the optimum asphalt content. Judging from the mixed pore content in this study, it was found that by adding 1% the pore value was 4.61%; an additional 2% obtained a pore digit value of 4.64%; an additional 3% obtained a pore number value of 5.22%; at the addition of 4%, the pore value is 11.10%; and the addition of 5% obtained a pore number value of 11.47%. This indicates that the greater the level of addition of waste cooking oil waste, the higher the pore value obtained so that the mixture is less impervious to water and air so that the mixture will be more easily absorbed by water and oxidized. Thus resulting in accelerating the aging of the asphalt.
Synthesis method of chitin become chitosan polymer from shrimp shells for enhanced oil recovery
Authors: Setiati R , Siregar S , Wahyuningrum D , Rinanti A
Published: April 2021

The purpose of this study was to examine the benefits and procedures for making chitosan polymer from chitin found in shrimp shells. This initial research aims to synthesize chitosan membrane from chitosan powder and its characteristics. Chitin is the main organic material found in groups of crustaceans, insects, fungi, molluscs and arthropods animals. Crab, shrimp and lobster shells have long been known as sources of chitin production as their chitin content is quite high. Chitin is the second most abundant natural biopolymer after cellulose. This non-toxic natural biopolymer is produced commercially from shrimp and crab shell waste. Chitosan powder is prepared from shrimp shells through deproteination, demineralization and deacetylation processes. Chitosan is characterized by conducting tests of water content, ash content, nitrogen content, viscosity, degree of deacetylation, analysis of functional groups by IR spectroscopy and crystallinity by X-ray diffraction. Chitosan characterization is seen from physical appearance, functional group analysis and crystallinity. The potential application of chitosan, as a deacetylated chitin derivative is multidimensional in nature, such as in food and nutrition, biotechnology, materials science, medicine and pharmacy, agriculture and environmental protection. Chitin isolation from shrimp shells and its synthesis into chitosan, makes shrimp shells more beneficial for other fields. One of the applications of chitin is as chitosan polymer, which is used as an injection fluid in the field of Enhanced Oil Recovery.
Development of tsunami inundation map for the coast of Palu City
Authors: Purnama M R , Adityawan M B , Farid M , Chrysanti A , Rayadi B T , Suryadi Y
Published: April 2021

The 2018 Sulawesi Earthquake and Tsunami severely damaged the coast of Palu City, Indonesia. The city did not have adequate mitigation system for a tsunami. A tsunami inundation map is required. This study based on modelling four scenarios of possible earthquake-induced tsunami. The earthquakes were identified based on data from PUSGEN. The generated tsunami wave is simulated using Delft3D and Delft Dashboard. The wave propagation is modeled using nesting method. This method couples different grid sizes. Nesting process helps to ensure the model efficiency and accuracy. The results provide the maximum inundation map along the Palu City Coast. These results can be used by decision maker to develop the coastal zone management of Palu City. Furthermore, they can be utilized to propose a disaster risk management plan.
Comparison of Taylor Galerkin and FTCS models for dam-break simulation
Authors: Hafiyyan Q , Adityawan M B , Harlan D , Natakusumah D K , Magdalena I
Published: April 2021

The aim of this paper is to compare the ability of two numerical models to simulate two-dimensional dam-break flows. Dam-break modelling is important in reducing the high-risk of dam failure by determining the water flow movement and its effect on buildings downstream. In this study, the Taylor Galerkin and Forward Time Central Space method is presented to simulate 2-D dam-break flow. The Hansen filter is applied to both methods to reduce numerical instability oscillations in the model. The filters were used for each time step at each computing point. The model is verified by comparing the result simulation with numerical results from previous studies. The result show that Taylor Galerkin numerical scheme with Hansen filter is successful to simulate the problem of 2-D dam-break. Also, the Taylor Galerkin model has better results than the FTCS model. Studies like this are needed for mitigation efforts in the event of dam failure.
Impact of transportation on urban compactness index in South Tangerang City, Indonesia
Authors: Aulia P L , Taki H M , Wartaman A S
Published: April 2021

This study aims to identify the impact of transportation on the urban compactness index in South Tangerang. The urban form of a compact city was influenced by transportation. The implement of a compact city is necessary to measure the impact of transportation as a variable of this paper itself. This paper uses quantitative statistical methods to identify the effect of transportation on the urban compactness index. The variables used include Urban Compactness index, road networks, public transportation routes, public transport services, and public transportation accessibility. The results of this research indicate that, first, there is a positive influence on the arterial road density and the distance from the farthest houses to the bus stop, and second, the ratio of the length of public transport routes has a negative effect on the Urban Compactness index were the proportion of routes in areas which not served by public transport networks will make the areas not compact. The conclusion is the linkages between regions from a transportation system connected to the road network indicate that travel distances tend to be shorter in a compact city, so the three factors could be a reference to optimizing development in the application of Compact City in South Tangerang City.
Optimal location for online motorcycle taxi shelter at Bekasi Train Station
Authors: Pangestu R R , Taki H M , Situmorang R , Supriyatna Y
Published: April 2021

In some locations such as in this study are stations, online motorcycle taxi requires a shelter or a special location to conduct their activities, such as drop off and also pick up to maintain regular traffic so as not to cause congestion and create orderliness in transportation activities. In this study, the optimal shelter location at Bekasi Train Station will be searched using the weighting method, that is using rank sum weight, where respondents will be given preference questions with a scale of 1 to 5 on each particular indicator where the number of ratings will get preference ranking of each indicator which can be calculated its weight by a formula and gives a score to each indicator with a value of 1 to 3 which is assessed from the physical condition of each indicator in this study. Where in this study in finding the optimal location five indicators will be used namely Distance, Landmark, Comfort, Safety, and Orderliness. In searching for the weighting of the correspondents on the preference questionnaire are users and drivers of online motorcycle taxi. From the assessment, it can be seen that the most optimal location to pass the drop off is to be in Indomart Juanda with the highest weighting preference at the drop off is the landmark and then the distance from the station, and the most optimal location for ordering an online motorcycle taxi is located Indomart Juanda with the most weight preference in motorcycle taxi booking online is the landmark and the safety.
COVID 19 in gated community at Jakarta, Indonesia
Authors: Seanders O , Maroofi H
Published: April 2021

This study aims to evaluate how far the principles of Gated Community can break the chain of the spread of the COVID19 virus. In 2020, the world was widely shocked by Coronavirus (COVID19), which started in Wuhan, spread throughout the globe without exception to Indonesia. As one of the busiest cities in Indonesia, Jakarta becomes one of the gateways for COVID19 in Indonesia. The outbreak of COVID19, made the Jakarta City Government implement a quarantine system policy, which has an impact on the daily lives of Jakarta’s inhabitants. This situation causes the inhabitants’ community only to be able to move around in their neighborhood. The access restrictions for outsiders of residence arose so that some settlements in Jakarta imposed a gated community system. The research method used is a qualitative method, which is carried out with literature and observation studies. The data used comes from several regulations issued by the government regarding the COVID19 pandemic and phenomena in the field. The research location is the Kelapa Gading. This region is a residential area with a majority of the gated community, in the area of the gated community housing can prevent or even break the COVID19 chain in the study area.
Stakehoder’s involvement in the successful development of ecovillage Cibodas, Bandung - Indonesia
Authors: Melati I , Yuslim S , Indrawati E
Published: April 2021

The success of sustainable development, especially in rural areas, is strongly influenced by the involvement of stakeholders from the early stages (planning). Several studies in Europe show that stakeholder participation can be relied on in further management by facilitating the fulfillment of stakeholder expectations or needs. The acceleration of rural development by the government in Cibodas Village, Bandung towards an Eco-village requires stakeholder involvement. The purpose of this research is to provide a reference on the expectations/expectations of the facilities and infrastructure needed by stakeholders and the involvement of stakeholders for efforts to improve the village economy through Eco-village development. Location of research, in the area of “Rukun Warga” (RW) 12. This research uses qualitative observational and descriptive methods. Then quantified on a Likert scale. The data collection instrument used a questionnaire through purposive sampling. The results showed that stakeholder expectations were very high, as seen from the number of responses that demanded infrastructure improvements related to the development of an Eco-village in RW 12. These findings could become the basis for the design and development framework of the Eco-village in RW 12, Cibodas Village, Bandung.
Analysis of indoor and outdoor particulate (PM2.5) at a women and children’s hospital in West Jakarta
Authors: Yulinawati H , Khairani T , Siami L
Published: April 2021

Air quality monitoring is very important to provide public information about the impacts of air pollution on health, especially in health centers. Particulate less than 2.5 micrometer (PM2.5) is the main parameter of air pollution. This research aims to measure indoor and outdoor PM2.5 at a women and children’s hospital in West Jakarta. The method for collecting data of PM2.5 was with a low-cost sensor (LCS), which also collected temperature and humidity data. The LCS was collocated with two ambient air quality monitoring stations (AQMS) as the references. Field measurements at hospital were conducted for three months. The data are statistically analyzed with the openair model. The results show that LCS and AQMS followed a similar trend. Outdoor PM2.5 concentration is always higher than indoor. Peak hourly outdoor concentrations usually occur around midnight (24:00–03:00). The indoor peak concentrations are between 06:00–12:00. The indoor PM2.5 tend to be stable, while the outdoor varies throughout the day. The ratio of PM2.5 concentration (24-hour) indoor to outdoor is 0.8. In conclusion, the relation between indoor and outdoor air pollution is still not comprehensive due to temperature and humidity factors. All indoor and outdoor PM2.5 are above WHO Air Quality Guideline.
Risk analysis of hearing loss among the employees in ceramics sanitary industry
Authors: Sintorini M M , Wibowo F A , Suswantoro E , Sinaga E
Published: April 2021

Industrial sector has a high risk of work accidents. So, it is necessary to apply occupational health and safety management to monitor the work process. The aims of this study are to evaluate and analyze the risk of noise exposure in the production process at sanitary industries. The study was conducted in the sanitary ceramics industry which produces sanitary equipment, in the production area and other sanitary equipment. The method used was cross sectional design study, there was seven samplings location and 98 respondents to determine the perceptions of health risks. The results obtained that the highest noise is 101.9 dB (A) in the forging section, 92.6 dB (A) in the casting section, 91.7 dB (A) in polishing belt section, and 89.6 dB (A) in polishing section buff. According to The Government No. 13/2011 the noise quality standard for the industry at 80 dB (A). The highest risk of noise exposure is to complaints of headaches (OR = 2.44), high blood pressure (OR = 1.24), fatigue (OR = 2.21), hearing loss (OR = 1.99). Suggestions that can be given are the need for training and outreach to workers about the risks associated with specific work on 8 hours work noise exposure to avoid work accidents.
Evaluation on the sanitation facilities in the Gegerkalong Traditional Market, Bandung, Indonesia
Authors: Mulyatna L , Wahyuni S , Wilantri R N , Yustiani Y M
Published: April 2021

Big cities in Indonesia still have many traditional markets whose activities and transactions are carried out directly person to person. The Gegerkalong Market is a traditional market with high activity due to the dense surrounding population. Traditional market activities require the availability of sanitation facilities to support commercial and domestic activities for sellers, buyers and visitors. This study aims to evaluate the sanitation facilities in the Gegerkalong Market, Bandung, Indonesia. The method used in this study is direct observation and data collection through questionnaires. The observation results were checked and analyzed with the reference requirements contained in the Decree of the Republic of Indonesia Minister of Health No. 519/Menkes/SK/VI/2008. While respondent data is processed using a Likert scale to obtain the level of satisfaction of respondents with sanitation facilities. Sanitation facilities observed included the provision of clean water, waste management, sewerage and drainage conditions, sales stall conditions, toilets and hand washing facilities. Based on the evaluation conducted, it was found that the condition of the Gegerkalong Market sanitation facilities was categorized in the unfavourable state. Nevertheless, respondents were satisfied with the existing facilities because they were already familiar with the existing conditions.
Knowledge-attitude-practice method analysis as a guide for Kasomalang Kulon Village waste bank planning
Authors: Pradiko H , Wahyuni S , Ganiy W A
Published: April 2021

Waste management is a systematic, comprehensive and sustainable activity that includes the reduction and handling of waste. Waste bank is one of the strategies to implement 3R in waste management at the community level. The Hamlet 01 of Kasomalang Kulon Village has not yet a proper procedure to treat and manage the solid waste. The objective of this research is to analysis the readiness of the community to operate the waste bank. The sampling method used is Non Probability Sampling with Purposive sampling technique. The condition of the community’s readiness for waste management is obtained by the KAP (Knowledge, Attitude, Practice) method. KAP results are showing that the level of community knowledge is high with positive attitudes, and practices are also high. This indicates that the community is ready to manage household waste, including operating a waste bank.
Evaluation of solid waste management operational techniques in Kebonsari Urban Village, Citangkil sub-district, Cilegon City
Authors: Hasianetara S , Indrawati D , Purwaningrum P
Published: April 2021

The increase of population is equal to the increase of solid waste generation. Domestic solid waste generation that is not managed properly will cause problems. Solid waste management in Kebonsari Urban Village, Citangkil Sub-District, Cilegon City still uses the old paradigm (collect-transport-dispose) and low service level. This study aims to evaluate solid waste management activities from storage, collection, and transportation to the final disposal. This study used the method of field observation to analysis current service coverage and compare operational technical conditions in Kebonsari Urban Village with SNI 19-2454-2002 of Operational Techniques of Municipal Solid Waste Management. Data analysis was performed by calculating based on SNI 3242-2008 Residential Solid Waste Management. The results showed that only 41% of the population of Kebonsari Urban Village were served, this was due to the fact that there were still many people who did not put garbage in their bin and solid waste operational techniques in Kebonsari Urban Village were still not entirely applying SNI 19-2454-2002 one of them is shown by the low participation of the community in solid waste management. The average of solid waste generation in Kebonsari Urban Village are 0.71 l/person/day or 0.12 kg/person/day and the solid waste composition are 60.2% organic and 39.8 inorganic.
The importance of Helminth Eggs assessment in Indonesia for water reuse and disease prevention
Authors: Firdayati M , Muntalif B S , Fathuna I S , Sabhrina H M
Published: April 2021

Water as vital needs to our life must be fulfilled. Increasing population tends to water scarcity causes by the high demand and limited source. Water reuse is one of the solutions to face the challenge. Helminth eggs is one of the parameters for water reuse recommended by WHO. Previous studies have shown that there are helminth eggs presence in irrigation water and wastewater system in Indonesia, thus the possibility of disease by helminth eggs presence. This study was conducted to give an advice about the importance of helminth eggs assessment in Indonesia for better water reuse and prevent disease like soil-transmitted helminthiases. To detect the presence of helminth eggs in water, adaptations from several existing methods is required. Indonesia needs an exact method to determine the presence of helminth eggs. Government, institutions, and society have to collaborate to prevent the existence of helminth eggs for the water reuse purpose in the future. This can lead to increase quality of health and environment aspects.
Potential of rainwater harvesting in Cimahi, West Java, Indonesia
Authors: Pirngadi B H , Karlina A D , Syarifudin D
Published: April 2021

Drinking water services in Cimahi City are only 18.6% of the population, lower than the average of West Java Province and the National figure of 80.82%. Population density 15,281 population/km2 on the other hand the problem of lack of raw water sources, heavily polluted rivers, 47% of well water is not feasible as a source of drinking water causing a lack of drinking water services for its residents. This problem needs to get a solution, can efforts to use rainwater in Cimahi City be carried out? This study aims to identify water supply systems, the potential, and problems of drinking water supply through rainwater harvesting. The method used is descriptive through analysis of drinking water supply systems through rainwater harvesting including analysis of average drinking water demand, analysis of the potential and problems of drinking water supply, and identification of technical aspects of directives through rainwater harvesting in Cimahi City. The results obtained in this study are that the City of Cimahi has the potential to use a water harvesting system as an alternative for community drinking water supplies. From a technical point of view, Cimahi City can use a combination of individual and communal systems.
Study of water usage fluctuation in apartment for university student residences
Authors: Safitri A D , Tazkiaturrizki T , Hadisoebroto R
Published: April 2021

Water usage is inseparable from the water quality, its accessibility and rapid urban development followed by an increase in facilities and infrastructure. This study aims to determine how the use of clean water in apartment buildings based on its designation is for students in university area. This observation was carried out by comparing secondary data on 24 hours/7 days fluctuations in water usage from six apartments. Observation results showed that peak hours on weekdays averagely occur between 06:00 - 08:00 am in the morning and 06:00 -08:00 pm at night, while the amount of water used per day on weekdays was higher than on weekends. The percentage water usage at peak hour for the six apartments, on weekdays and weekends were 7.24 - 7.24; 7.54 - 8.04; 9.01 - 8.53; 7.56 - 7.6; 8.53 - 8.63; 9.48 - 8.69 respectively. Due to their similar percentage, it could be concluded that those apartments have the same type of activity. These results could be used in designing of water reservoirs in typical apartments of university student residences.
Study on fluctuation of water usage in office areas apartments
Authors: Yovanny Y , Tazkiaturrizki T , Hadisoebroto R
Published: April 2021

This study aims to examine the use of clean water in apartments by observing secondary data from nine apartments for 24 hours in 7 days. The results show that in the areas of Jakarta and Surabaya, on weekdays there is a significant increase in water use, namely in the morning at 06.00-08.00 am with a fluctuation range of 7.17%-10.99% and 8.21%-8.34%. Meanwhile, at night at 04.00-08.00 pm with a fluctuation range of 6.2%-12.23% and 7.11%-7.21%. And on weekends there is also a significant increase in water use, namely in the morning at 06:00-08:00 am with a fluctuation range of 6.4%-10.22% and 6.7%-7.27%. Meanwhile, at night 05:00-09:00 pm with a fluctuation range of 6.9%-9.07% and 7.28%-7.35%. It can be concluded that the activities in the apartment vary due to the difference in the percentage of water use. The result data can be used to design water reservoirs in apartments with residential characteristics in office areas.
Turbidity reduction by household scale electrocoagulation device
Authors: Afiatun E , Pradiko H , Puspita R
Published: April 2021

Pollutant parameter that often exceed the standard is turbidity, then the turbidity parameter was the main concern in this research. The electrocoagulation method is an alternative for treating water without using chemicals. This study aims to reduce the turbidity and develop previous research on electrocoagulation methods into a pilot scale with a flow rate of 0.01 L/sec. The flow rate 0.01 L/sec illustrates the water requirements for one household. In this study the electrocoagulation method was tested by the variation of electrode plates 1, 2 and 3 pairs with 3, 5, 7 and 10 Volts to treat artificial sample water with an initial turbidity of 100 NTU made from sample of raw water from Cikapundung River as one of main drinking water sources in Bandung. The optimal conditions obtained in the preliminary study were retested with turbidity variations of 25, 50, 100, 200, 300 and 400 NTU. The optimal condition of the electrocoagulation process is obtained in the variation of 2 pairs of plates with a voltage of 7 Volts and current density 23.53 A/m2. The variation can treat raw water with an initial turbidity up to 400 NTU until it reaches a quality standard with a final turbidity of 3.40 NTU and the percentage of removal is 99.15%.