bluuebunny/crossref_metadata_2025 huggingface dataset:
Integrated waste management in the review of technology and environmental law aspects
Authors: Irianto I K , Arygunartha G Y
Published: March 2020

Bali Province has an area of 5, 636.66 km^2 or 0.29 percent of the total Indonesian archipelago, which is administratively divided into 8 regencies, 1 city, 55 sub-districts, 701 villages/kelurahan, 1430 Desa Pakraman, and 3945 Banjar/Adat. The area of each regency/city is as follows: Buleleng 1, 365.88 km^2, Jembrana 841.80 km^2, Tabanan 839.33 km^2, Badung 418.52 km^2, Denpasar 127.78 km^2, Gianyar 368.00 km^2, Klungkung 315 km^2, Bangli 520.81 km^2, Karangasem 39.54 km^2. Concerned by environmental quality standards and environmental damage criteria, the results show about 2163.6 m^3 per day of waste generation located in the city of Denpasar which is the center of the city in Bali. Waste that is not transported on average in all cities in Bali per day reaches 593 m^3. This is due to the limited land and infrastructure of transportation and equipment of landfill, as well as labor and work methods applied. The waste management model used and integrated with the optimization of cooperation between districts and cities is expected to be an alternative solution to the waste problem in Bali.
Star-delta starting of induction motor stages visualisation using Arduino and LabVIEW
Authors: D Saputra I G N A , Suryawan I K , Sugirianta I B K
Published: March 2020

This paper presents a lab module in learning of star-delta starting induction motor using Arduino and LabVIEW. Current, voltage and speed sensors using current transformer, voltage transformer and photo coupler respectively are implemented in this module and connected to Arduino. LabVIEW then processes those inputs from Arduino via USB for making visualisation of speed, current, and voltage for both stage at star and delta connections. The speed is used to set the timer in proper value at 75 – 80 percent of the full load speed of the motor. This module has been tested using a standard instrument and the results show that the error values of voltage was 0.39 percent.
Consumer power prediction based on neural network for electricity theft detection
Authors: Tjahjono A , Raziqurrahman S , Wardhani R N
Published: March 2020

Currently the state electricity enterprise, known as PLN, monitors the active power of customers by recording meters every month and is still prone to electricity theft because of location of the electricity measuring devices placed in each customer’s home. In this paper, we propose an electric theft detection device with an ARM microcontroller, placed centrally on the side of distribution transformer panel to measure active power in each customer and total active power in distribution transformer. The total active power of all customers is used to predict total active power in distribution transformer by the neural network method. By comparing the active power measured in distribution transformer with prediction of the active power from the neural network method and comparing the total active power of all customers with the total active power in the distribution transformer, devices that have been made are capable of detecting electrical theft if there is percentage of error between predicted value of active power on IED Master and active power measured on IED Master above 1 percent, and also the percentage of errors between the total active power from 2 pieces of IED Slave and active power measured in IED Masters above 1 percent.
Comparative study on the physical characteristics of goat milk pasteurization through serial and circulation systems of ultraviolet method
Authors: Hariono B , Wijaya R , Anwar S
Published: March 2020

This research was intended to evaluate the physical characteristics of pasteurized goat milk by serial and circulation systems of ultraviolet (UV) rays. The parameters measured covered viscosity, specific heat, conductivity, pH, water content, freezing point and specific gravity. The UV reactor system consisted of a reactor housing made of ST 316 material equipped with 10W UV lamp, UV-C 253.7 nm and a quartz tube with 1.80 J per square cm or 2314.83 J per liter as a dose per reactor for the serial system and 1.56 J per square cm as a dose for circulation system. The results of the serial system showed that the physical characteristics were not significantly different from the control at 0.5 percent, whilst the circulation system with flow rate of 10 cc per second and dose of 1.56 J per square cm showed that the treatment of two, four and six circulations on viscosity treatment had different effect from the control (P less than 0.01), whereas other treatments did not differ from the control (P more than 0.05).
Energy study of edamame freezing process at PT Mitratani Dua Tujuh Jember
Authors: Hariono B , Djamila S , Bahariawan A , Wijaya R , Pambudi S
Published: March 2020

Knowledge of the cooling load of products that will be stored frozen in cold storage needs to be known. The purpose of this research was to analyse the cooling load in cold storage, calculate the freezing time of the product, calculate the amount of heat in the vapor compression cycle and the coefficient of performance (COP). PT. Mitratani Dua Tujuh is a company engaged in the processing of frozen fast food and edamame as one of the leading frozen products in this company. The maximum capacity of cold storage used was 190 tons with an air speed of 0.9 m/s and used two compressors with R-404A refrigerant type. The results of the analysis found that the freezing time per package on the product was 5.28 hours. Cold storage cooler load of 55, 432 kW or equivalent to 15.75 tons of refrigeration. The amount of heat in the compression cycle consisted of compression, condensation, expansion and evaporation were 6, 45 kW, 34, 17 kW, 17, 18 kW and 27, 72 kW, and the coefficient of performance (COP) was 1, 237.
Similarity detection design using Winnowing Algorithm as an effort to apply green computing
Authors: Pratomo A , Irawan A , Risa M
Published: March 2020

The website is a media that is currently widely used as a tool to provide services and information. In this study, the application of a Winnowing Algorithm to detect the similarity of proposal documents through the website as an effort to apply green computing on campus. With the development of similarity detection is expected to use paper, computer resources will be reduced. Some test scenarios are carried out by changing the values of the gram and window parameters to obtain optimal values. This optimal value will be applied to the application to be built. The results of the implementation of the Winnowing Algorithm on the proposal management information system in the form of a plagiarism checking feature that is part of the system. The plagiarism checking feature will be able to produce output in the form of a percentage of the plagiarism rate that will be used as a recommendation for the department as an effort to apply green computing.
A virtual reality game of Khalid Ibn Al-Walid short story in first person perspective
Authors: Hakkun R Y , Fathoni K , Nurhadi H T
Published: March 2020

Islam is a religion that is adhered to by 24.1 percent of the world’s population in 2015. The accelerated and extensive spread of Islam is inseparable from the efforts of former world Islamic figures. Islamic history designates a hero who was famous for his courage and intelligence, Khalid ibn Al-Walid. He was a fellow of the Prophet, who was very skilled in the military field. The history of his dispute writes in many history books, studies, and documentaries. This study proposes a game using virtual reality device as an alternative mechanism for the introduction to Khalid ibn Al-Walid. A brief history of the characters arranged in an ordered narrative story, then prepared in the form of a first-person shooter game. Interaction in the game uses a virtual reality device to simulate the operation and action of the character. After playing, 37 checklist point about the character stories gave to 10 players. The average success of exact answers is 71.35 percent.
Machine learning approach for detection of fileless cryptocurrency mining malware
Authors: Handaya W B T , Yusoff M N , Jantan A
Published: March 2020

Cybercrime is the highest threat to every private company and government agency in the world. Using synergistic threats to attack provides many success alternatives that lead to the same goal, which is to take over the network and carry out illegal mining activities using CPU resources from the victim’s computer. One of the main motives for the success of this criminal business is its relatively low cost and high return of investment. Using the infection chain method in carrying out cryptocurrency mining malware attacks with fileless techniques involves loading malicious code into system memory. Monero (XMR) is by far the highest popular cryptocurrency among threat actor installing mining malware because it comes with full anonymity and resistance to an application-specific circuit mining (ASIC). This work proposes a better method for classifying conventional malware and cryptocurrency mining malware. On the other hand, grouping specific of suitable features extracted from the sources of EMBER dataset shown as malware and need to categorize as a cryptocurrency mining malware. The proposed approach is defining a better algorithm for enhancing accuracy and efficiency for cryptocurrency mining malware detection.
The comparative analysis on the accuracy of k-NN, Naive Bayes, and Decision Tree Algorithms in predicting crimes and criminal actions in Sleman Regency
Authors: Wibowo A H , Oesman T I
Published: March 2020

Crime is an action which is considered as a violation of law and can harm others. Nowadays, crimes has increased with erratic patterns. Therefore, crime prevention is necessary since it will occur based on the historical data. Data mining is a technique that can be used to predict crimes that will occur. According to the previous researches, data mining techniques have several methods that can be used to predict crimes by utilizing the data of crimes that have occurred. Hence, it is necessary to conduct a comparative analysis of classification algorithms in order to obtain accurate prediction results based on the crime data in Sleman regency. The classification algorithms analyzed in this study were k-NN, Naive Bayes, and Decision Tree. Based on the three algorithms, the accuracy of k-NN with k = 5 was 57.88 percent, with k = 10 was 59.49 percent, with k = 15 is 59.38 percent, with k = 20 was 60.18 percent, and with k = 25 was 61.57 percent. Meanwhile, for the Naive Bayes algorithm, the accuracy reached 65.59 percent, and the Decision Tree algorithm reached 60.23 percent. In conclusion, the algorithm with the highest accuracy was owned by Naive Bayes.
Therapy scheduling system using genetic algorithm for Batam autism service centre
Authors: Kirana M C , Sari F , Lestari S
Published: March 2020

Autism is a neurological disorder that causes the sufferer difficult to communicate. Autism Service Centre was established to provide better education for Autism in the order they can adapt to an environment around them, even in formal or informal education. Autism Service Centre has a variety of daily activities, one of them is providing therapy to students. The therapy consists of speech, occupational, and physiotherapy. In carrying out the therapy, Batam Autism Service Centre found difficulties when processing student data and determining therapy schedules. Therefore, a therapy scheduling system is made using genetic algorithms for utilizing this algorithm to create dynamic schedule. Initiate from creating chromosome until mutation to get the new chromosome. These chromosomes will be experienced the same process until obtain the best chromosome on the next generation. This method can display the schedule by using data of therapeutic, therapist, room, time, and student appropriately to be solution in determining therapy schedules.
CAD modelling of fire safe valve body by reverse engineering
Authors: Koeshardono F , Rahmaditia R , Cahyadi D
Published: March 2020

The government of Indonesia has a regulation called local content to push the manufacturing industries in order to increase their competitiveness. In order to reach that goal, technology transfer has been done, but it is a long way to go and impractical. So, one way to go is by the understanding of the product that has to be made. Reverse engineering is a specific technique to use because of its practicality. As the name implied, reverse engineering is the inverse of engineering design because the starting point is the product itself instead of the idea. In this paper, the product used as a case is the body of the fire-safe valve. The final goal of the reverse of the body part of the valve is the idea behind it or called the design intent. However, it is going to be a long process, and as the first step that will be presented in this paper, the goal is to get its CAD model of the fire-safe valve body.
A brief comparative thermodynamics review of domestic air conditioning system with or without installed heat recovery
Authors: Sunu P W , Anakottapary D S , Suirya I W , Puspa Indra I B , Rahtika I P G S , Putra D M R S , Yusa I G S G , Wijayantara I M
Published: March 2020

With the increase of mean all season temperature in many cities and demand of hot water for domestic used, high energy consumption of cooling system and electricity are rising continually and rapidly. Thus, the conservation of energy in domestic application more and more important to minimize resources consuming. Following that, room thermal stratification, amount of heat rejected by condenser and recovered by heat recovery is an effective means of saving energy. In this paper, a model of domestic air conditioning system equipped by heat recovery unit was conducted to get the thermodynamics performance, cooling capacity, work of compressor, amount of heat recovered are taken as a case study to evaluate the energy saving and conservation effect. The result from time series data indicate installed the heat recovery unit in domestic air conditioning give benefit to thermodynamics aspect of refrigeration system about 46.1-53.8 percent so it has great potential for energy conservation. Then system that made use of waste heat to produce hot water to serve the building needed was proposed and the heat recovery also has economic viability. Therefore, using the heat recovery system in domestic air conditioning can improve the energy efficiency and realize the energy saving.
Preliminary investigation of performance and temperature distribution of thermoelectric cooler box with and without internal fan
Authors: Midiani L P I , Subagia I W A , Suastawa I W , Sapteka A A N G , Winarta A
Published: March 2020

Thermoelectric cooler is one type of refrigeration system that is environmentally friendly because it does not use refrigerants which have potential damaging the ozone layer. In this study, an experimental performance of thermoelectric refrigerator using fan and without fan is presented. The result shows that the cold side temperature decreases from 25.5 degree C to -5 degree C for 37 watt (with fan) and 25.5 degree C to -7.5 degree C for 37-watt without fan. Using 43-watt power supply, the cold side decreases from 25 degree C to -5 degree C for fan usage, and from 26 degree C to -7.5 degree C in 60 minute and 75 minutes, respectively. Using fan for cold sink inside the cabin will distribute the cabin temperature of cool box evenly and also increase the capability of heat transfer performance of cooler box of thermoelectric. Maximum average COP is 0.103 and achieved by 37-watt power supply with cold sink fan.
The effect of fluid flow variation on clove dryer machine with control of air temperature and relative humidity
Authors: Wiryanta I K E H , Adiaksa I M A
Published: March 2020

In this study, the heat effectiveness and energy efficiency of the clove drying machine with control of temperature and relative air humidity were analysed. The data were carried out experimentally on a clove dryer machine that has 3 racks with staggered arrangement by varying the speed of the air flow into the drying chamber. The hot air produced from a heater and blown to the drying chamber used a fan with 3 various speed rate (1.9 m/s, 2.3 m/s, 2.8 m/s). The heat distribution on each rack was observed and analysed and compared with the energy requirements of the machine. The result showed that the heat flow on the rack evenly distributed. The fluid flow variation has the important effect. The heat will more effective with the lower air flow speed, which the higher heat transfer (q) to the clove from the heater depend on the air flow speed with the higher value 72.78 watt at the lowest positions rack with hot air speed 2.8 m/s. The energy efficiency of the machine was about 37 percent, with the highest value 39.27 percent at the air speed 2.3 m/s.
Preliminary design and test of a water spray solar panel cleaning system
Authors: Sugiartha N , Ardana I G N , Sugina I M , Widiantara I B G , Suparta I N , Adi I K
Published: March 2020

Solar panels are susceptible to dust accumulation on their surface for long term operation. Scheduled cleaning work is thus important to maintain the efficiency and reliability of the solar panel for producing electricity. The paper presents a preliminary design of the cleaning mechanism for the solar panel surface using a semiautomatic wiper control system. A DC motor is utilized to power the wiper. The amount of water is sprayed over the solar panel surface, while the wiper is moving back and forth. The manual switch buttons are used to control the rotation direction of the DC motor. The experimental tests are conducted to obtain the solar panel performance, namely output voltage, output current, output power, and panel efficiency under clean and dusty conditions. The comparison of both conditions has been made to determine the cleaning effectiveness of the proposed prototype. The test results show that the wiper swept repetition of 10, 20, and 30 times delivers 57.0 percent, 79.1 percent, and 86.7 percent of the performance of the initial clean surface condition, respectively.
Study of a flexible ankle prosthetic through the stump skin temperature
Authors: Herdiman L , Susmartini S , Priadythama I
Published: March 2020

The purpose of this study was to determine the effect on the ankle flexible prosthetic foot to the convenience of walking based on the parameters of temperature change on the surface of the skin stump on a transtibial amputee. This study using a crossover design, in which the amputee wears below knee prosthetic foot two different periods. The results of the skin surface temperature measurement when the amputee stump before running between the exoskeletal prosthetic foot without ankle and endoskeletal with flexible ankle show that p less than 0.05, which means there is no significant difference prior to the tests. Measurement of skin temperature when stump amputation after walking shows that p is more than 0.05, which means there is no significant difference after testing. Furthermore, the test walking on amputees before and after walking shows p less than 0.05, which means there are significant differences significantly to the decline in temperature on the surface of the skin stump. Concluded the use of flexible ankle on endoskeletal prosthetic foot lowers the temperature of the skin surface after walking as far as 80 meters at 0.97 percent. The decrease in skin temperature stump showed comfort in wear below knee prosthetic foot.
Influence of body weight and prosthetic flexible ankle on walking balance parameters in transtibial amputee gait
Authors: Herdiman L , Susmartini S , Priadythama I
Published: March 2020

The walking balance of transtibial person has been widely documented in many literature. However, the effect of walking balance of transtibial amputee between body weight and a prosthetic foot is not widely known. This study was used for gait analysis to measure the walking equilibrium parameters amputated from 14 people with transtibial. To reduce variability among subjects at the time of testing, we carried out washing out for all subjects for 2 days. Data generated that all subjects walked in one direction straight to measure the walking balance and kinetic parameters. Design experiment with a crossover design, subjects with amputations walked for a distance of 80 meters, estimated time of 6 minutes and speeds about 1.20 to 0.15 m per sec, during the gait phase. The movement of the ankle in the plantar flexion position is reduced because in the final phase, the standing ankle becomes flexible. Correlation analysis shows that the effect of walking balance when wearing a prosthetic foot is measured during 1 gait cycle. The results depend on the design of prosthetic foot and how to walk.
Cushion seat design on manual wheelchair for people with paralysis using value engineering method to improve activity comfort: A preliminary study
Authors: Wicaksono Y A , Herdiman L , Susmartini S
Published: March 2020

Many people with paralysis feel discomfortness in their activities on wheelchair. Assistive device which can increase comforness is cushion seat wheelchair, but cushion seat with special specification for people with paralysis has high prices. This research is a preliminary study to design alternative cushion seat which comfortable and affordable price for manual wheelchair using value engineering method. There are three criteria and eight subcriteria were raised which were processed by Analytical Hierarchy Process (AHP). Three subcriteria were selected for the priority of requirement design, there is user’s maneuver support as selected subcriteria 1 weighing 0.64221, lumbal protection as selected subcriteria 2 weighing 0.72054 and suitability of cushion seat material to maintain the gluteal temperature as selected criteria 3 weighing 0.83333. Based on selected subcriteria, three alternatives designs were raised which were processed with AHP. Selected alternative is cushion seat with backrest, foam and gel modification which were measured based on selected subcriteria that selected subcriteria 1 weighing 0.70536, selected subcriteria 2 weighing 0.68032, selected subcriteria 3 weighing 0.74084.
Realtime health monitoring system design for children with cerebral palsy using internet of things
Authors: Fadhlillah R , Susmartini S , Herdiman L
Published: March 2020

The realtime health monitoring system is a typical application of wearable computing in the medical field. However, existing technology does not consider to design monitoring system for supervision for people with cerebral palsy. The advances in internet innovation have made possible techniques for the conveyance of healthcare. The objective of this research was to design and develop innovative technological solutions to offer a more proactive and reliable medical care environment. The short-term and primary goal was to construct IoT4CP. We also describe an experimental model designed for checking the health condition of the children with cerebral palsy based on IoT architecture. The framework depends on sensor shield associated with a cloud platform that gathers the data from the sensors. The sensors measure various parameters, such as a heart rate and muscle contraction which are transmitted via microcontroller by a gateway to a cloud storage platform by google firebase. This research presents the first realtime analyses to be activated within this framework and can send data smoothly with total average 1.77 seconds.
Design of work facilities for transtibial people in sewing machine stations using TRIZ Method
Authors: Mahardi H , Herdiman L , Susmartini S
Published: March 2020

A person with physical disability is someone who cannot carry out an activity caused by a physical condition or a biological system. Data from SAKERNAS states that the rate of disability in 2017 reached 16.81% with a total disabled workforce of 11, 224, 673. BBRSPDF Prof. Dr. Soeharso Surakarta is the implementing unit for empowering persons with physical disabilities, where empowerment developed is sewing skills. The empowerment of sewing machines in the garment industry is generally designed to be able to be run for physically normal workers, this is different if a person has a transtibial disability. The operation of a sewing machine that previously used the sole of the sewing machine was changed to the use of the knee. This problem can be overcome by making special work facilities. The design of work facilities for persons with transitional disabilities needs to be adjusted between needs and abilities through a participatory approach. The design of the sewing machine pedal motor also contradicts technical problems, due to differences in the use of limb functions. This problem can be solved using the TRIZ method to obtain a design that fits the user’s needs.
Analysis of wind speed effect on voltage in wind power plant performance
Authors: Parti I K , Mudiana I N , Rasmini N W
Published: March 2020

Utilization of new renewable energy has received special attention from the Indonesian government today because new renewable energy has several benefits from fossil energy, including environmentally friendly, non-polluting, abundant and will not run out throughout the ages. The growth of energy consumption is an average of 6.5 percent year, not yet balanced with sufficient energy supply, energy prices are increasingly expensive, energy subsidies are getting bigger, energy use is still wasteful. One way to overcome the problem of electricity is wind energy. Wind energy is a very abundant source of energy and there is no end of the year. At wind speeds of 1.5 to 3.0 m/sec, the voltage produced by wind power plants is linearly increased from 1.8 to 4.2 volts AC, from speed 3.0 to 4.0 m/sec, the voltage generated is in range from 5.0 to 6.5 volts AC. The DC voltage characteristic is equal to wind speed function. At wind speeds of 1.5 to 2.5 m/s, the voltage generated by wind power plants is linearly increased from 6.0 to 10 DC volts, from speeds of 2.5 to 4.0 m/sec the resulting voltage is stable 11 to 12 volts DC.
Displacement and curvature ductility in mid-rise reinforced concrete buildings
Authors: Santoso Kahfi Ridho , Hidayat Irpan , Suangga Made
Published: March 2020

When an earthquake occurs, ductility will maintain strength and stiffness in the structure so that the building structure still works even though it is on the verge of collapse. To get a description of the structural behavior starting from the structure in linear elastic, the first yielding of the structural elements until the structure collapse due to earthquake load, it can be done with non-linear static analysis namely pushover analysis. In this study, the geometry of mid-rise reinforced concrete structure consists of four storey buildings. The dimensions of the column structure 400x400 mm and beam structure 250x500 mm, where the dimensions of the beams and columns are the same from the 1st floor to the 4th floor. To find out the behavior that affects the ductility value in mid-rise reinforced concrete structures, a variation material used in this study are the spacing of stirrup, ratio of longitudinal reinforcement, ratio of compressive and tensile longitudinal reinforcement, and compressive strength of concrete. Structural geometry modeling, structural loads, and modeling of material variations used the program SAP 2000. From the output of this program, an analysis of the value of curvature ductility and displacement ductility was performed. The result of this study are the higher the value of compressive strength of concrete and the ratio of longitudinal reinforcement in beam structure will increase the value of ductility. The smaller the value of the spacing of stirrup and the ratio of longitudinal reinforcement in column structure will increase the value of ductility.
Analyzing the stability level of organic waste by the static respiration index and dynamic respiration index
Authors: Zulaichatin Rizky Maulida , Kristanto G A
Published: March 2020

Stability is a parameter that reveals the extent of decomposition of biodegradable organic matter. Various methods are employed to measure the stability level of organic materials, including the static respiration index (SRI) and dynamic respiration index (DRI). In this study, the characteristics and stability of food waste, garden waste, municipal organic waste, fruit waste, tofu factory waste, and cow dung samples used in the study were identified and analyzed on the basis of the water content, volatile solids, C/N ratio, lignin content, and SRI and DRI values. In addition, an appropriate method for the further processing of unstable organic waste samples was determined. Organic waste samples were collected from nine places. Results revealed that the tofu factory waste samples exhibit the highest SRI and DRI values of 13.3995 mgO2g−1OM−1h−1 and 148.3747 mgO2g−1OM−1h−1 respectively. The composting results for tofu factory waste samples and cow dung with coconut shells as the bulking agent for 14 days revealed that the highest percentage of SRI decrease for tofu factory waste was 99.94% on the 3rd day of composting. On the other hand, the highest percentage of SRI decrease for the cow dung samples is 99.17% on the 7th day of composting.
Standard operational procedures development for government building’s care and maintenance work of structure component to improve work effectiveness and efficiency using risk-based approach
Authors: Pratama Febrian Hera , Latief Yusuf , Machfudiyanto Rossy A
Published: March 2020

The collapse of the structural component of a building can cause physical and material losses, both to the building management and the building’s occupants. This can happen due to the absence of a standard operating procedure that is appropriate to the government’s regulation regarding the maintenance and care for structural components. In the current condition, the government’s building as the center of public services does not have a proper standard operating procedure regarding the maintenance and care for structural components. The aim of this research is to develop a procedure regarding the maintenance and care of a building’s structure based on risk. Risk in this context is defined as the risk that influences the duration of each work activity. The methods used in this research are archive analysis, survey, and case study. The result of this research is a standard operating procedure for maintenance works and care for structural components of a building based on risk. This can be utilized to increase the efficiency and effectiveness of the work process.
The impact of port traffic activities on noise level at Jakarta international container terminal I (JICT I) port of Tanjung Priok, North Jakarta
Authors: Tinimbang Fahd Ligar , Yulinawati Hernani , Kusumadewi Riana Ayu
Published: March 2020

One of the largest and busiest ports in Indonesia that handles more than 30% of Indonesia’s non-oil and gas commodities is located in Tanjung Priok. The purpose of this research is to analyze the noise level and compare it with the noise level standard by Ministry of Environmental regulations No. 48/11/1996 and analyze the noise levels from traffic activities in JICT I. The primary noise level data of Leq (Equivalent Noise Level) on sampling points number 9 at JICT I area was taken using the Sound Level Meter. Secondary data includes the schedule and type of incoming ships, as well as the JICT I Tanjung Priok Port layout. Sampling data was taken during 24 hours activities, which on daytime for 16 hours (06.00-22.00 WIB) and night time for 8 hours (22.00-06.00 WIB). The results showed a high level of noise almost occurred at all points, especially at night and the peak appeared on Saturdays which was with a noise range of 83-85 dB (A). The main noise source is caused by truck and container loading and unloading activities. Therefore, the conclusion is the noise level caused by JICT I Tanjung Priok activites has exceeded the noise level standard by Ministry of Environmental regulation No. 48/11/1996 and by Jakarta Governor’s Regulation No. 551/2001 which was 70 dB(A). The vehicle speed restriction and replacement of crane engine from diesel to electric has been implemented. However, it still have not been able to reduce the impact of the noise. An alternative that can be applied is to use a sound barrier or the construction of Onshore Power Supply (OPS).
The effect of hydrated lime addition in improving the moisture resistance of hot mix asphalt (HMA)
Authors: Nataadmadja Adelia Dwidarma , Prahara Eduardi , Setyandito Oki
Published: March 2020

It is desirable to have pavement surfaces that last until its designed life. Ravelling, rutting, and potholes are one the pavement failures that are commonly found and those failures are related to the intrusion of moisture onto the asphaltic mixture. This research aims to study the usage of hydrated lime as an additive to improve the moisture susceptibility of the asphaltic mixture. There were two different natural aggregates used in this research project and the prepared specimens were tested by Marshall, Cantabro Loss, and Indirect Tensile Strength tests. From the research results, it was found that hydrated lime was effective in not only improving the moisture susceptibility of the asphaltic mixture, but also increasing the stability and making the asphalt specimens denser. It was also found that it is critical to choose the suitable aggregate to be used in the asphaltic mixture as it can significantly affect the quality of the asphalt specimens.
Effect of increasing urease enzim concentration on shear strength properties sand clay biocementation
Authors: A’la Himamul , Rahayu Wiwik , Lisdiyanti Puspita
Published: March 2020

Environmentally friendly soil improvement materials have been developed over the past decade. Utilization of biotechnology in biocementation for engineering geotechnical materials has been proven to increase the shear strength of soils. This biocementation method uses the urease enzyme mixed with a solution of urea and calcium chloride. The purpose of this study was to determine the effect of increasing the concentration of the urease enzyme in sand soil stabilized with biocementation and clay addition. This research will be compared with previous studies with a ratio of 1:4. Mixing is done manually and tested using direct shear and permeability testing. Curing time for the biocementation process is carried out for two and four weeks. The result of this test is the increase in shear strength of soil due to the addition of clay and the biocementation process of the urease enzyme.
Study on the accessibility of water sources to meet the water needs of rural communities in semi-arid regions of Indonesia
Authors: Messakh Jakobis Johanis , Punuf Defritus Aldrin
Published: March 2020

There are a large number of people in the world who live without an adequate supply of clean water, and spend hours to get clean water. For this reason, access to water and water sources is one of the main keys to meeting the needs of the community’s clean water, specifically rural communities in the semi-arid regions of Indonesia. This study aims to analyze the extent to which access to clean water sources affects the patterns of water use and fulfillment of rural communities. The method used is a survey completed with a questionnaire and observation. The object of the research was the rural water user community in TTS Regency, East Nusa Tenggara Province with a total of 87 families, and water sources in the study area. Samples were divided into three areas which were categorized as dry, normal and wet. based on the analysis of rainfall data at 14 rain stations. The results showed an average water use level of 49 Lpcd (SD = 25) and the distance to the water source as far as 521 m (SD = 1100). There is a negative correlation between the distance of the water source and the amount of clean water used. Water availability factors affect water usage more than long distances but can be reached. This study also found that the use of clean water by the community is adaptive to the availability of water according to environmental conditions. This study recommends the importance of handling clean water issues according to the characteristics of each different region.
Modelling progressive failure of steel moment frames exposed to localised fire
Authors: Suwondo Riza , Cunningham Lee , Gillie Martin
Published: March 2020

This paper presents modelling of the progressive failure of steel moment frames subjected to localised fire. A finite element approach using the software ABAQUS has been developed to analyse the structure. An explicit-dynamic solution was adopted to solve the non-convergence problems caused by element buckling. A series of validation analyses were carried out to ensure that the results were within an acceptable level of accuracy. The analysis results are shown to match well with the previous experimental data and analysis. This modelling approach allows detailed insights to be obtained into the structural robustness of such frames in fire situations.
Analysis of car speed reduction due to concrete speed bumps on local roads in Surakarta city
Authors: Handayani Dewi , Purnomoasri RA Dinasty , Syafi’i  , Mahmudah AMH
Published: March 2020

Increasing the volume of cars passing through local roads in residential areas and the various dimensions of concrete speed bumps made by citizens for safety, makes it important to conduct research on the correlation of car speed and the variables that influence the presence of speed bumps. The variables used are speed variables, dimensions of concrete speed bumps and road shoulder width. The speed variable used is the speed of the car before crossing the speed bumps with the help of an artificial line on the video or vehicle recording results. From the analysis of car speed before passing concrete speed bumps, it was found that speed bumps can reduce speeds by 80.17%. The car speed reduction model is Y2 = 12,762-0181 X2 + 0.114X3. Y2 = speed at a distance of 16 meters before speed bumps, X2 has wide speed bumps (cm) and X3 is the average width of the shoulder (m), and R2 is 0.970. This model applies to the condition of the dimensions of the width of the speed bumps 32.6 - 57 cm and the shoulder width of the road 30 – 100 cm.
Water-energy nexus development for sustainable water management in Indonesia
Authors: Wijayanti Yureana , Anda Martin , Safitri Lisma , Tarmadja Samsuri , Juliastuti  , Setyandito Oki
Published: March 2020

This paper is a review of the development of simulation model for water-energy nexus in achieving sustainable water management in Indonesia. It is important to understand complex interconnection of water and energy to create strategy since Indonesia is facing the decrease of resources and increase of demand. A system dynamic simulation model is a reliable tool to simulate the relationship between water and energy. This study objective is to develop a conceptual model that can determine the amount of demand, supply, or import of water and energy. The method used is a Vensim (Ventana Simulation Environment) program. This conceptual water-energy nexus framework could further being tested to calculate the balance of water and energy element and creating sustainable resource management plans.
Performance evaluation of outrigger location on the seismic load distribution of high-rise building structure
Authors: Aryo  , Suangga Made
Published: March 2020

Various structural systems have been developed to be able to accept the lateral force of the earthquake with an optimum and economical. One of these structural systems is the outrigger system. Outrigger is one of the structural stiffening systems that can be used on building structures, especially in high-rise buildings. Structural systems such as outriggers are used for earthquake-resistant buildings, so the performance of building structures can be increased by producing minimum displacement. This research will design the building as high as 40 and 50 floors, with the calculation of earthquake based on Indonesia Earthquake Design Code SNI 1726-2012. This study will be compared the calculation of seismic loads in the building structure with and without using outrigger, so that it can be seen the difference in the seismic loads and the performance of the structure. From this research, it is found that the outrigger system can reduce the seismic loads in the structure, and also is able to reduce the lateral displacement of the structure. The inter-story lateral displacement of 50 storey and 40 storey structure can be reduce up to 2.06% and 7.84% with one outrigger and 3.76% and 12, 49% with two outrigger.
Urban planning Jakarta settlement area based on earthquake mitigation: socio-cultural ecology study
Authors: Wijaksono Sigit , Sasmoko  , Indrianti Yasinta
Published: March 2020

Jakarta has the potential to be rocked by a large and proven earthquake, based on the historical record of the city of Jakarta. There are three occurrences of a devastating earthquake that once rocked Jakarta which damaged several houses and tall buildings and permanently stone walls. Conceptual and implementation readiness is needed when a major earthquake occurs, especially in terms of inspections of building structure capabilities, public education, and contingency plans that are in accordance with the conditions of the people of Jakarta. This research aims to build a conceptual framework for the readiness of Jakarta society through various approaches. The conceptual framework will be the theoretical basis of earthquake disaster profiling and disaster mitigation-based spatial planning. The study was conducted on exploratory research as part of the Neuroresearch research method. The results of the study were in the form of theoretical constructs of the study of socio-cultural ecology to realize the spatial layout of Jakarta residential areas based on earthquake mitigation.
Architectural design assessment of Javan leopard rehabilitation facility regarding the occurrence of stereotypical pacing
Authors: Maulana Rheza , Gawi Jamal M. , Utomo Suyud Warno
Published: March 2020

The Javan leopard is an apex predator with a key role in maintaining the stability of the ecosystem, in which it’s population are declining due to habitat loss, illegal wildlife trade, and human-animal conflict. Although efforts in rescuing Javan leopards are actively made, not all rescued Javan leopards can be released back to the wild. Some must go through rehabilitation process in captivity, due to physical injuries. One issue regarding leopards in captivity is the risk of them developing stereotypical pacing, a repetitive stereotypic behaviour due to stress in confinement as one of the sign of zoochosis. Zoochosis itself is a mental illness in animals. Zoochosis will definitely interfere with the success of rehabilitation process. Therefore, cases of zoochosis such as in zoos must not occur in rehabilitation facilities. A further understanding of animal’s needs and behaviour is needed and must be implemented in the design of the enclosure. Not only to prevent zoochosis, but also to improve and promote the natural behaviour of the Javan leopard. This study aims to analyse how the design of an enclosure correlates to Javan leopard’s behaviour. Through methods of observation and evaluation of rescued Javan leopards at a rescue center in Sukabumi, by studying the overall facility design and the behaviour of the leopards. Results shows that the rescue center enclosure provide more natural environment with live foliage, sunlight, minimal noise disturbance, hiding spots, and able to simulate hunting behaviour during feeding time. The leopards housed shows no significant sign of zoochosis.
Healing garden implementation in rehabilitation centre at Jakarta as a concept of eco-architecture design
Authors: Mariana Yosica , Wijaya Yulianto
Published: March 2020

This paper presents a study of the implementation of ways to create landscapes that can provide healing effects created from the existence of the landscape itself. The background of this study is nowadays architectural development does not support ecology, people start to build something that will benefit in the market and ignore the importance of the state of the organic environment for the overall environment and landscapes only play a role in natural beauty. So, promoting and applying the elements of the garden and plants as a part of healing garden becomes an important issue and it must be borne in mind when designing landscapes in order to support eco architecture awareness. This paper provides essential benefit for humankind through healing garden. Precisely, the results of this paper indicate specific elements on plants’ nature variety of place within the mentioned garden.
Therapeutic garden setting in post stroke rehabilitation building
Authors: Rieuwpassa B F , Bobby Saragih J F , Soebiyan Vivien
Published: March 2020

Stroke is a condition that is caused by vessels in the brain part hampered by blood clots. The brain tissue cannot function so the impact on a person is impaired physical and cognitive impairment. Post-stroke patient is advised to undergo therapy 1x24 hours after the patient is declared eligible for therapy. In this case, the organization of the therapy room can affect the quality of a rehabilitation building. The room becomes a supporting element to facilitate therapy activities. It was analyzed based on standards to achieve the room requirements to facilitate therapeutic activities needed by patients. To meet the needs of rehabilitation, the therapies that are recommended to undergo the rehabilitation process are occupational therapy, physiotherapy, speech and visual, and hydrotherapy. The result in this study showed, to supporting physical therapy, post-stroke patients also need therapy to support cognitive function, by applying Therapeutic garden elements, it is expected to have influence in order to achieve maximum patient recovery process.
The implementation of biophilic design in co-working space design as a concept of healthy sustainable architecture
Authors: Suharjanto G , Taufik C , Mariana Y , Suryawinata BA
Published: March 2020

Humans have tendency to relate to nature. This is a human trait inherited from generation to generation. Where we can feel happy, interested or amazed by the beauty of nature. The rapid development and technological advances make our relationship with nature farther away. As a result, we become indifferent to the environment around us, the degeneration of ecosystems, and cause mental disorders and stress. Stress and stress disorders are problems that are often experienced by office workers in big cities like Jakarta. There are 60.8% of office workers experiencing depression and stress. One factor causing stress is the work environment, which is a dense urban area. Therefore, rebuilding our relationship with nature becomes more important in the field of conservation. The concept of biophilic design is a design approach based on biophilia aspects which aims to produce coworking spaces that can reduce stress and provide mental and physical healing to its users.