bluuebunny/crossref_metadata_2025 huggingface dataset:
Corn oil phase change material (PCM) in frozen food cooling machine to improve energy efficiency
Authors: Arsana M E , Temaja I W , Widiantara I B G , Sukadana I B P
Published: March 2020

Freezer cooler (CF) is one of the cooling equipment for the storage needs of frozen food at low temperatures. CF is an indispensable tool for storing food and drinks to be durable. So, it is safe for consumption. Ice cream products, for example, are susceptible to temperature variations and are easily damaged during storage. Temperature fluctuations can cause dramatic adverse effects on the quality of frozen food, ice re-crystallization temperature in ice cream, and this can create substantial economic losses, and degrade the quality of frozen food. Maintaining a stable temperature in frozen food storage is very important. Current CF cooling technology consumes large amounts of electricity. It is essential to develop research on CF cooling engines that are energy efficient and environmentally friendly. Current technology makes it possible to add PCM to the walls of the cooling machine. During the phase change process, the temperature remains constant, and a large amount of energy can be stored or released. Refrigeration technology testing with PCM integrated on the evaporator has been carried out in this study and can reduce energy consumption by 4 percentage, increase COP by 6 percentage.
Online vibration monitoring system for rotating machinery based on 3-axis MEMS accelerometer
Authors: Aswin F , Dwisaputra I , Afriansyah R
Published: March 2020

This article discusses the design of a rotating machine vibration monitoring system in real time by utilizing a 3-axis accelerometer MEMS sensor. The system consists of 2 main parts, namely, vibration data acquisition system and data analyse system with the principle of wireless data communication. The results of vibration measurements from each three MEMS accelerometer sensors will be forwarded by the Arduino Nano microcontroller to the data collection device, the Arduino Uno microcontroller. Also, the machine rotating speed data acquired by the TCRT5000 speed sensor will be forwarded by the Arduino Pro Mini microcontroller to the same collection device. Data that has been recorded by the collection device is then transmitted to the computer through wireless communication using the Node-MCU device. The Lab View software is used as a machine vibration data display that has previously been processed by the computer in accordance with parameters desired by the user. Testing stability of data transmission with a certain length of time and communication distance is carried out to ensure the measurement results are in accordance with the real-time vibration conditions. Test results show an average delay time of below 200ms for the farthest distance from the wireless device signal range.
Analysis of pepper plant creepers technology using banana tree fiber composites
Authors: Yuliyanto  , Zulfitriyanto
Published: March 2020

Planting of pepper trees is now much reduced because there is no such thing as pepper wood. In this study using kepok banana fiber (paradisiaca forma typical) because it is a resource that can be renewed and cultivated. This study uses the RSM method and aims to determine the ability of banana tree fiber as a support for pepper plants against tensile strength and inpack strength at the beginning of manufacture and 3 month, Examining the effect of pepper growth on the composite banana tree uphold and knowing the effect of its upholding surface against the attached pepper root. Tensile test results at 0 months averaged 33.926 MPa while the following 6 months there was a decrease of an average of 31.22 MPa. Means tensile strength will decrease as the age of the composite increases. Impact test results at 0 months an average of 65.4824 kJ per square m, the next 6 months there was an average decrease of 65.2824 kJ per square m. It means that the impact strength does not decrease significantly as the age of the composite increases.
Design and additive manufacturing of wrist therapy devices for people with muscle disorders
Authors: Effendi I , Susmartini S , Herdiman L
Published: March 2020

In this modern era, Indonesia is faced with MEA (ASEAN Economic Community). According to data from the Indonesian Ministry of Health as many as 95 degree of medical devices in Indonesia are still imported products. Health problems also occur in many industries. Muscle injuries in the wrist are ranked 3 with 14.3 percent of workers who have suffered muscle injuries. One of the rehabilitation activities that can be done is physiotherapy. Physical therapy devices are widely available, but wrist therapy devices are still expensive and difficult to obtain in Indonesia. Therefore, it is necessary to develop a device, so that can be produced domestically at low prices. One technique that can support the developing of rehabilitation device is additive manufacturing. This technique has been widely applied in rehabilitation sector, for example to create finger orthosis and adaptive aid tools used by therapies. It is very suitable for rehabilitation sector, because it can create tools that accurately follow a patient’s unique anatomy. This study produces a device that can move patient’s wrist flexion and extension, with maximum range of motion 70 degree from normal position. The whole design produces a weight of 0.8 kg which can be categorized as portable.
Redesign paediatric walker for children with spastic cerebral palsy using TRIZ Method
Authors: Lestari N T , Susmartini S , Herdiman L
Published: March 2020

Cerebral palsy is a type of disability, which is related with movement and posture. Statistical data shows the number of CP in Indonesia from 2010 contributed 0.09 percent of children 24-59 months. Types of CP that are commonly found are Diplegic Cerebral Palsy (DCP) and Hemiplegic Cerebral Palsy (HCP). Percentage of DCP about 30 to 40 percent and HCP about 20 to 30 percent. The physical condition of a DCP has weak hip, so there is no strength to lift the body and physical condition of an HCP has one spastic hand down and swings to exhortation. Rehabilitation for them must be continuing to maximize the walking ability and increase physical mobility. Walker used to improve children’s walking. Nowadays, walker is still too heavy, walker dimensions have not considered the size of anthropometry’s children, and walkers have not accommodated users. Therefore, a walker was designed based on concept of DCP and HCP using TRIZ method. The aim is choosing design that accommodate the needs of children for supporting rehabilitation. The results of products dimension are maximum height 107.3 cm, minimum height 60.0 cm, length of walker 71.7 cm, length of handgrip 10.4 cm, and diameter of hands pad 3.3 cm.
Electric wheelchair with forward-reverse control using electromyography (EMG) control of arm muscle
Authors: Rakasena E P G , Herdiman L
Published: March 2020

Muscle dystrophy can occur in the body’s organs of human movements such as the legs, thighs, upper arms, palms and fingers of humans so that the sufferer cannot use limbs. Electric wheelchair is not effective for people with muscle dystrophy disabilities, because users have limitations such as defect of the hands. Given these circumstances, this research proposes an electric wheelchair with controlled by electromyography (EMG) which is placed on the arm muscles. This Electric wheelchair use 2-channel electrodes for sampling muscle signal. This research was conducted in Balai Besar Rehabilitasi Sosial Penyandang Disabilitas Fisik (BBRSPDF) Surakarta, Indonesia. The results of the first grip strength testing are less than 35.8 kgf that indicates weakness of the hand grip. The same thing in the second treatment is a weakness in the handle because of n less than 35.8 kgf. The result of robustness test, spherical movement is not robust with a value 0.756 and. 0.000. The result of cylindrical movement is fully robust with a value 0.001 and 0.000. The result of lateral movement is fully robust with a value 0.000 and 0.000. The result of tip movement is fully robust with a value 0.000 and 0.029. The result of hook movement is not robust with a value 0.109 and 0.000.
The effect of two-step solution heat treatment on the impact properties of Hadfield austenitic manganese steel
Authors: Bandanadjaja B , Hidayat E
Published: March 2020

Hadfield austenitic manganese steel is made of iron with 1.0–1.4 percentage Carbon and 10–14 percentage Manganese. Hadfield steel was processed to solution heat treatment to eliminate the carbide (Fe, Mn)3C. This study aims to make a smaller grain size of Hadfield steel at once with solution heat treatment. It was expected to improve toughness of Hadfield steel. Solution heat treatment was carried out in stages by implementing pre-isothermal heating at a lower temperature with two variations at 600 degree C and 700 degree C before undergoing high austenitization heating. Pre-isothermal heat at above 450 degree C was promoting pearlite growth. Pearlite growth starting from austenite grain boundary then reformed new grain, which has a smaller size than prior austenite. Second, stage of austenitization heating then was performed at 980 degree C to transform new small grain pearlite to austenite. An agitated water quench was used to ensure a faster cooling rate to achieve 100 percentage austenite structure. Results demonstrate that sample that underwent a stepped heat treatment process at 600 degree C followed by austenitization at 980 degree C produced finer (smaller) austenite grains. That sample had the highest impact value of 329.1 J/Cm2 in comparison to other specimens.
Structural analysis of single girder overhead crane using SS400 and ST52-3 steel plate
Authors: Asmara I P S , Hamzah F , Susanti L F
Published: March 2020

This paper is aimed to review the structure of single girder overhead crane using finite element analysis (FEA) technique. The strength and stiffness of existing single girder overhead crane with the capacity of 10 tons SWL and a span of 14 meters are calculated. The existing structure using SS400 steel plates is evaluated and compared with a new design using ST52-3. The stress and deformation of the existing structure are analyzed using Ansys software and a new design is proposed. Further, the effect of girder weight reduction to the decreasing of power required by the long-traveling motor is identified. The analysis shows the reduction of structure mass on the new design is 0.8 tons and the decrease in required traveling power is 1 kW. The maximum stresses of the existing and the new structure are 25 percent and 23 percent of the yield strength of the SS400 and ST52-3. The percentages of the maximum deformation to the allowable deflection limit are 43 percent and 58 percent, respectively.
Wind turbine simulator using wind speed dataset on microgrid system
Authors: Tjahjono A , Anggriawan D O , Meydisari S D
Published: March 2020

Currently the wind power plant simulation system has been developed by various methods as an effort to optimize energy derived from wind power. This paper proposes a wind power simulator using wind speed datasets to produce electrical energy. The wind turbine simulator consists of a generator driven by an induction motor where the speed of the induction motor is controlled using a variable speed drive. To generate electrical energy based on the dataset used a PC that is connected to a variable speed drive through modbus communication assisted by a computer programming language as the user interface. Furthermore, the output from the wind power simulator is connected to the grid tie inverter to be integrated in the microgrid system. The performance test results of the simulator show that the characteristics of the wind power simulator are in accordance with the characteristics of the actual wind power plant and the power generated by the wind power simulator is 50.6 watts, equivalent to wind speeds of 5.1 m/s.
Application of user-defined unilluminated PV simulator on a microgrid
Authors: Tjahjono A , Ullah A , Wahjono E
Published: March 2020

To get a renewable energy source where the characteristics of the source can be easily adjusted according to user requirements is one of the keys to success when testing a microgrid system. This research proposes an unilluminated PV method with temperature and irradiance parameters that can be set using a programmable power supply that is remotely regulated from a PC. The energy generated from the unilluminated PV simulator is connected to a grid tie inverter to be integrated in a microgrid. The simulator performance test produces a maximum power of 102.87 VA when using PV 120 WP with an irradiance setting of 1000 W/m2.
The impact of earthquake on clean water demand and supply at North Lombok regency, Indonesia
Authors: Hidayat Ari Ramadhan , Triatmadja Radianta , Supraba Intan
Published: March 2020

An earthquake of magnitude 6.4 Mw hit Lombok, Indonesia in July 2018, followed by another 6.9 Mw earthquake magnitude in less than a month in August 2018. The earthquake caused fatalities and damage to infrastructures, including the facilities of clean water. The main objective of this study is to know the impact of the earthquake towards clean water facilities damage, and to analyse clean water demand and supply after earthquakes in North Lombok Regency. Another purpose is to propose disaster mitigation to be implemented in the other disaster prone regions of Indonesia. The primary data were collected through field survey and questionnaire samples of 110 respondents. Secondary data regarding the damage of clean water network were collected from the Regional Water Company (PDAM) of North Lombok. The results of this study show that many clean water facilities were damaged due to earthquake. The amount of clean water demand in Lombok Island after the earthquake was decreased by 19.03%. The number of wells users after the earthquake increased from 22.73% to 57.27%. The potential groundwater for clean water in the Lombok Island is more than sufficient to fulfil the requirement of clean water during disaster. However, further studies are required to realize such idea.
Vacuum preloading, an alternative soft ground improvement technique for a sustainable development
Authors: Gouw Tjie-Liong , Gunawan A
Published: March 2020

Preloading with soil surcharging in combination with prefabricated vertical drain is one of the common methods used in improving high compressibility and low shear strength of soft soils, particularly in improving very soft to soft clay. One of the main issues of this technique is it requires a high volume of backfill material to apply the surcharging, hence, whenever the availability of the backfill material is scarce or remote, it becomes expensive. In such a case, vacuum preloading becomes one of the best options to be applied in alleviating the high compressibility and low shear strength of the soft clay layers. This vacuum technique also helps to create a sustainable environment as it omits the needs of a high volume of backfill material. Therefore, no hills cutting or ground excavation is required. This paper presents the difference between surcharging and vacuum preloading methods, the working principle, and installation of vacuum preloading. Case histories in improving the soft soils of in low land areas, a large residential located on high ground about 700m from sea level, and a highway construction projects are presented. The case histories revealed that proper application of vacuum preloading could effectively improve soft clays, be in a low land area or high ground area. The depth improved can reach as deep as 25m.
Geofoam: a potential for Indonesia’s soil problem
Authors: Gunawan Anthony
Published: March 2020

One major issue in construction is settlement. Building any structure above compressible soils without proper consideration can lead to considerable damage and maintenance cost. Geofoam is a type of light-fill material in the lightest category. Since the 1970s, geofoam has been used worldwide to address settlement problems. Unfortunately, geofoam has not received much attention in Indonesia, mainly due to its cost compared to traditional fill. This paper covers the application of geofoam for road construction based on real soil conditions in Indonesia. From the analysis conducted, the use of geofoam reduces the compacted fill required by 40%. This saves not only construction time, but also carbon footprint of the road design. When the reduction of time by using geofoam is considered, geofoam becomes a feasible solution economically as well as environmentally.
Data annotation system for intelligent energy conservator in smart building
Authors: Pardamean Bens , Cenggoro Tjeng Wawan , Chandra Bloomest Jansen , Rahutomo Reza
Published: March 2020

The concept of smart building includes the optimization of energy usage in a building. One of the possible solutions for this is to adaptively adjust appliances utilization according to activity level in the building. Thus, an intelligent activity estimation system needs to be developed. However, massive annotated dataset is necessary to train the system. Therefore, we propose a system that enables rapid data annotation to collect the massive dataset. With the proposed system, an image can be annotated within 4.8 seconds in average.
Activity and risk identification in audit process on integrated management system to increase performance efficiency of construction services organization in Indonesia
Authors: Dewi Afifah , Latief Yusuf , Sagita Leni
Published: March 2020

The audit process of integrated management system is combining efforts to ensure or compare whether the work results is compatible with the criteria that have previously determined. Likewise, the benefit of audit process of integrated management system is means to achieve continuous improvement. Integrated management system itself is a combination of two or more management systems that make it easier for organizations to achieve their objectives. Specifically, in this research is talk about combine the quality management system, environmental management system and occupational health & safety management system. The purpose of this study is to identify the activities, objectives and risks in the audit process if the management system is integrated (quality, environment, and occupational health & safety). Also, to know whether that activities, objectives and risks affect the increased efficiency of the performance of construction services organizations in Indonesia. After identified all of them, the next step is to find out the dominant risks that may can happen in the audit process of integrated management system. And then, the final step is to find out how to manage those dominant risks. This study uses the respondent’s survey strategy to identify activities, objectives, and risks and uses a case study strategy to find out the dominant risk management strategies. The results of this study in the form of activities, objectives, and risks in the integrated management audit process and find out whether the activities, objectives and risks affect the increase in the efficiency of the performance of construction services organizations in Indonesia and how to manage these dominant risks.
The effect of mixing speed to adsorption heavy metal Cu2+ and color using kepok banana peel waste
Authors: Delaroza Rivania , Wijayanti Asih , Kusumadewi Riana Ayu , Hadisoebroto Rositayanti
Published: March 2020

Home industry of screen printing generally disposes wastewater directly into drainage without being processed first. Wastewater from screen printing industry has a high metal content exceeding the quality standards of Minister of Environment Regulation no. 5 of 2014 concerning Waste Water Quality Standards which are being problem for the environment. This study aims to analyze the effect of mixing speed on adsorption of heavy metal Cu2+ (Copper) using adsorbents from the utilization of kepok banana peel waste in batch reactors and mixed using the jartest tool. In the process of making the adsorbent, the kepok banana peel was dried for 2 days and carbonized by using furnace at 400°C for 2 hours to become powder. After the carbonization process, the size was uniformed into 100 mesh and activated using H2SO4 with an immersion process for 24 hours. The adsorbent powder was then used as much as 10 grams in 250 mL of screen printing wastewater with variations in mixing speed (rpm): 100,150,200 and variations in contact time (minutes): 30,60,90. The result showed that the optimum mixing speed is 100 rpm with a time of 60 minutes. The initial concentration of heavy metals Cu2+ of 3.52 mg/L and after the adsorption process it becomes 0.0716 mg/L, that meet the quality standards of 0.8 mg/L.
Identification of institutional safety factors affecting safety culture in construction sector in Indonesia
Authors: Machfudiyanto Rossy Armyn , Latief Yusuf , Sagita Leni , Suraji Akhmad
Published: March 2020

The construction sector in Indonesia is faced with the fact that the high number of work accidents. The number of work accidents in Indonesia is among the highest in the ASEAN region. efforts that have been carried out so far in the form of making and updating legislation, technical standards, supervision, guidance, counseling and outreach to increase awareness of company leaders and workers in general about the benefits of Occupational Health and Safety (OHS) implementation, are not complete if the coordination of each stakeholder institution (stakeholders) are not implemented properly so that everything runs individually according to their respective interests. The purpose of this study is to identify current OHS institutional conditions in the construction sector. The methodology used is content and construct validation, survey respondents were processed using the Relative Important Index Analysis. the results of this study explain that the realization of a culture of occupational safety and health in Indonesia (0,968) Understanding of occupational safety and health is embedded from an early age to higher education (0,914) Inadequate OHSE HR Competencies (0,856) and Ministry of labor (0,919) as the most dominant indicator in shaping the institutional system in the construction sector in Indonesia
The effect of cumulative damage factor value on existing runway life service
Authors: Prahara Eduardi , Rachma Hanna Annisa
Published: March 2020

Safety and convenience are the most important thing in running of an airport, the runway condition must always be considered especially in maintenance to prevent and repair the damage. In this analysis an evaluation of the conditions of the existing runway pavement of an airport in Indonesia is conducted by analyzing the pavement service life condition with the Cumulative Damage Factor (CDF) value. Considering data confidentiality, the airport will be called just by the sample airport. Furthermore, CDF will be calculated and graphed using the FAARFIELD program. The results show that the CDF value of the existing pavement of the sample airport is 10.42, with the largest CDF contribution from the B737-800 aircraft of 4.40 and A320 of 3.32. Concluding there is a correlation where if a surface layer is added, there will be a decrease in the value of CDF where an extension of the life of the pavement will occur.
Seismic performance of reinforced concrete structures with pushover analysis
Authors: Pierre Andrew John , Hidayat Irpan
Published: March 2020

A building that looks strong enough might possibly collapse due to the earthquake load. Earthquake resistant design is generally based on an analysis of elastic structures that are given a load factor to simulate ultimate conditions. When an earthquake occurs, the collapse behavior of a building structure is inelastic. Evaluations that can estimate the inelastic condition of buildings during an earthquake are analyzed using pushover analysis. Pushover analysis is the nonlinear static load of the structural collapse behavior of an earthquake, while the performance point is the magnitude of the maximum displacement of the structure during a earthquake. The inelastic structure analysis and evaluation method used computer application SAP 2000. Evaluation results of structural performance levels according to Applied Technology Council 40 (ATC-40) on the X and Y direction structure, the maximum total drift and total inelastic drift maximum values in the X and Y directions included in the Immediate Occupancy (IO) level category (maximum drift value of a building structure 0.00047 < 0.005).
Seismic assessment of RC building designed by local practice
Authors: Suwondo Riza , Alama Sohaib
Published: March 2020

Current research works and observations have shown that the parts of the Kingdom of Saudi Arabia are considered as low to moderate seismic zone. However, most of the residential buildings were designed for gravity loading only and lack of detailed to resist the seismic load. This research focused on the seismic evaluation of an existing typical residential building that was assumed to be located in different regions (Makkah, Jeddah, Gizan and Haql). This was accomplished by conducting a pushover analysis to simulate the nonlinear behaviour of the building. The analysis results in the failure mechanism of the building so that the weak elements can be monitored. These results help engineers to take any action for rehabilitation and strengthening work.
Efficiency measurement of transjakarta corridors towards people activities using DEA method (study case: corridor 1 and corridor 2)
Authors: Suhendra Andryan , Prahara Eduardi , Arumsari Putri , Wulandari Titut , Juliastuti
Published: March 2020

Increasing population every year in DKI Jakarta cause higher mobility. Transjakarta is the solution of the problem in this metropolitan city. This study aims to measurements of the efficiency Transjakarta corridors based on the level efficiency in each bus station by applying the Data Envelopment Analysis method CCR model and to make recommendation for future improvement. DEA was used because it allowed multiple input and multiple output. In this study the ridership of public transportation is considered as direct output characteristic of efficiency and four indicators are selected as input. From the result, corridor 4 has higher efficiency than corridor 1 and 2 by using the output orientation, all corridors have to improve the performance for increasing the ridership
Factors affecting junior high school students’ bike to school in Surakarta
Authors: Handayani Dewi , Hartono Widi , Bagaskara Alfin Wirawan
Published: March 2020

Cycling to school is a Surakarta City government program to reduce the use of motorbikes by students. The development of facilities for cyclists by the City of Surakarta is still limited to certain areas. On the other hand, the traffic conditions when going to school and coming home from school are problems and considerations for students to cycle to school. This paper will examine the factors that influence junior high school students to cycle to school in Surakarta using the ANP (Analytic Network Process) method. There are four main factors and 16 sub-factors of each of the main factors used in this paper. The main factors are behaviour, physical condition, social conditions, and environmental conditions. The results of the study that the environmental conditions are the greatest factor students cycling to school. When reviewed as a whole, these factors are calculated simultaneously, and found the five most influential factors. The five factors are bike ownership, health, parent’s salary, gender and no cycling friends.
Comparison analysis on vehicle operating cost (VOC) and passengers perception between transjakarta bus type of zhongtong LCK6180GC and scania K3201A (case study: transjakarta corridor 9)
Authors: Prasetyadi R , Prahara E , Suhendra A
Published: March 2020

The purpose of this research is to analyze comparison of vehicles operating costs (VOC) between the bus type of Zhongtong LCK6180GC and bus type Scania K3201A corridor 9, and also to know the level of satisfaction passengers using these two types of bus. The method used in this research including calculation of vehicles operating costs, Likert method, and distribution frequency. The results in summary is VOC of the type of Zhongtong LCK6180GC is smaller than Scania K3201A. Passengers’ satisfaction of Zhongtong LCK6180GC is lower then Scania K3201A but Zhongtong LCK6180GC gives more benefits for PT. Transportation Jakarta compare to Scania K3201A
Spatial plan based on disaster mitigation in the city of Mukomuko, Bengkulu
Authors: Noegroho Noegi
Published: March 2020

Many cities in Indonesia are located in area that is actually not safe from the threat of natural disasters, one of them is the city of Mukomuko in Bengkulu province. How should a settlement area be built in vulnerable city to natural disasters especially an earthquake and tsunami. This study is intended to provide an overview of what factors are considered in development based on disaster mitigation, one of which is through its spatial planning which categorizes zone in the study area. Research begins by understanding the location, character of the disaster that threat the location, mapping and finally producing prioritize spatial plans which response to natural hazard and definetely integrated with the spatial plan in the hierarchy above. The main objective is clearly creating a sustainable settlement area for the community.
Thermal comfort mapping on Pasar Gedhe Hardjonegoro to obtain passive cooling strategy in warm humid tropics
Authors: Soebiyan V
Published: March 2020

Sustainability energy in tropical climates based on passive cooling refers to a thin and slender shape building as the design strategy to obtain comfortable conditions inside the building. Therefore, thermal comfort problem would arise on a wide building with overcrowded people such as market building like Pasar Gedhe Hardjonegoro. The aim of this study is to examine the factors that influence the thermal comfort of a wide span building using passive cooling design. The tenants as the subject of this research are the main indicator in which the thermal comfort study of a building could be determined. The result of field studies indicates that there is a relation between the user’s thermal comfort with the different location in the building. Study showed that thermal comfort is influenced by the function of circulation.
An exercise on a sustainable design aspiration with the situated FBS ontology of designing
Authors: Tomasowa Riva
Published: March 2020

The paper elaborates John Gero and Udo Kannengiesser’s model of designing (situated FBS), which illustrates the process of cognition in designing. In the series of their papers, several examples are built to explain each stage that occurs. This paper contributes to providing another exemplary, explaining the process of cognition in situated FBS. The dry run analysis is used to explore all the stages that occur in the development, with case examples in designing sustainable architecture. The discussion maps an instance of developing ideas with sustainable aspects that include eight processes from situated FBS. This map focuses on the continuity of the processes and their translation. The continuity of existing operations requires several bridging methods, most of which are formed by constructive memories. In order to increase awareness of sustainable design, basic knowledge, design vocabularies, and design success stories that are collected into constructive memory play a significant role in achieving design requirements.
Perforated metal made from recycled material in the application of building façade
Authors: Suharjanto G , Salim K A , Mariana Y , Wijaksono S
Published: March 2020

Building material can be acquired effortlessly nowadays, but it still has limit and eventually the resources we have will run out. Building material decomposed in various time, some of it even take hundreds of years. This paper focus on the recycling metal waste material in form of perforated metal that used as building facade element. As we know that sustainable architecture not a simple design, and because of the lack of information until no interest in trying to execute the sustainable concept. Building material in metal form can be recycled and reused more easily thanks to the advanced technology invented. Perforated metal that can be designed in various ways and size can be used as building facade that enhance not only building performance but also the aesthetic aspect which emerged from the building.
A study on crime prevention through environmental design concept application in a private house in Yogyakarta, Indonesia
Authors: Sakina Bunga
Published: March 2020

Crime Prevention through Environmental Design or CPTED has become popular topic in architecture. Through this concept, proper design and use of the built environment and the surroundings can be realized in order to achieve social sustainability. This paper try to see the awareness of architect in creating a secure and safe built environment by examining a private house in Yogyakarta based on the application of CPTED design strategies. Result of the study revealed that Vignette as the architectural firm has awareness on designing a secure and safe environment by applying CPTED design strategies such as access control, surveillance, territorial reinforcement/territoriality, and maintenance.
Play on the street: children’s strategy to fulfill play needs
Authors: Bobby Saragih JF
Published: March 2020

The UN predictions noted, it is estimated that half of the children who live in cities, are increasingly losing their playgrounds. Similarly, the city in Indonesia. This is reflected in the many children who play in places that were not proper playground. Most children play in places that are not supposed to eg: roads, sidewalk, railway. Children choice to play in places that are not supposed, is the last option for children, this is the impact of the policy which often ignores the availability of playgrounds that are friendly for children. This research carried out in Tangerang, as one protester city of Jakarta by using qualitative research methods. The reason of children playing on the street : Internal factors, physical condition of open space; External factors, reluctance of children to play in open space because of the competition between the users of children by adults; phisical accesibility, easily accessible, since the users are children, the safety factor in reaching the playground is an important factor; visual accesibility can be reached easily by their parents or can be monitored by parents.
Creative sustainability initiative for Jakarta’s urban spaces
Authors: Prawata Albertus Galih
Published: March 2020

This paper will discuss the creative initiative made by designer, architect, and contractor under the JKT Play movement and community towards the urban spaces in Jakarta. Their initiative is intended to encourage creative activities, and playful experience for the citizens, and as an alternative material to support sustainable architecture concept. The discussion will be based on the project’s collaboration by designer, contractor, multinational company, food and beverages industry to create playful objects which can be used and explored by the communities. The initiative is based on the concern of the consumer waste, especially plastic cup, paper, and plastic bottle. The project has opened opportunities for creative industries, and designers to rethink and to approach the design methods and design exploration towards plastic wastes. It also can be a tool as an urban fabric or installation that can help creating colourful atmosphere for the city of Jakarta.
Integrated area based on highest and best use in Puri Indah West Jakarta
Authors: Tedja Michael , Buana C
Published: March 2020

The land price and demand in Puri Indah is very high. Therefore this study will advise to the future of development on the site to obtain the maximum value of land and building, which count The Highest and The Best Use of the site. The methods done by approach costs, where to analysis first market, a unit of which deportment in the area and how the odds, competitors. To tread in analysis potential on tread, training of tread. Analysis were based on aspects highest and best use but coupled with analysis architecture. The purpose of this research is to know what product will be built and how design in tread, and then functions in the area applied in the design overall with taking into account various aspects an architectural.
Townhouse with the Application of Hydroponics in Lebak Bulus
Authors: Keumala A R , Ardiani Y M
Published: March 2020

This townhouse design aims to create the pattern of hydroponic application to the townhouse units and its supporting facilities through a sustainable urban neighbourhood approach that focuses on urban green space. The research applies thephenomenological approach, and data analysis was conducted based on David Rudlin’s theory (1999) that includes analysis of urban texture aspect, circulation analysis and analysis of greening. To deepen the analysis, both on residential systems and hydroponic systems, the research is also equipped with insights gained from comparative studies and literature studies.
Diaminoethane-crosslinked polyetherimide nanofiltration membrane for textile wastewater dye removal
Authors: Mangindaan Dave , Kasih Tota Pirdo
Published: March 2020

In this work, diaminoethane (DAE) is applied to improve the properties of polyetherimide (PEI) nanofiltration (NF) membranes via crosslinking process with the core objective of removal of textile dye from wastewater. The membranes were fabricated by phase inversion thin film casting technique, from PEI/acetone/NMP (n-methyl pyrollidone) dope solution, crosslinked with DAE 2.5 % v/v in methanol. The novelty of this study is that DAE has never been utilized to crosslink PEI NF membrane for removal of dye from textile wastewater. In this study, the parameters of composition of polyetherimide dope solution having acetone as non-solvent content are investigated to obtain a potential membrane for clarifying wastewater, which is one of major problems in Indonesia. A model dye was utilized, namely Reactive Red 120 (RR120) as a synthetic wastewater. It is found that the rejection of dye is increased along with the acetone content, and also by the crosslinking duration. The crosslinking between PEI and DAE is analyzed from the physical and chemical aspects, by using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), respectively. A good performance in nanofiltration of RR120 synthetic dye wastewater is demonstrated with 92-98% dye rejection, which is quite reasonable compared to previous researches. This PEI-DAE NF is therefore promising not just for sustainable waste management, but also for the innovation and development in the ecology and environment of Indonesia.
Musculoskeletal disorders and posture analysis of ethylene dichloride (EDC) production operator
Authors: Setiadi Karyawan , Muhtadi  , Zuraida Rida
Published: March 2020

The production process of Ethylene Dichloride (EDC) in most companies has been integrated with technological advances, but the role of the human as an operator is still vital. In this study, the operator’s work posture analysis, as well as an evaluation of three main production activities at the petrochemical company in Qatar, were conducted. The main objective is to assess the risks carried out by panel & field operators. This assessment is important to maintain the operator’s productivity within the industrial system context. A Nordic questionnaire was applied to collect information on Musculoskeletal Disorders (MSDs) symptoms from 34 operators, while Rapid Upper Limb Assessment (RULA) and Rapid Entire Body Assessment (REBA) was utilized to analyze risks of work postures. How operators perceived their workload was also evaluated using NASA-TLX. About 79% of operators suffered from shoulder pain, 70% suffered a waist disorder as a symptom of MSDs, and it can cause disrupted productivity in the long run. The operators’ posture during performing their tasks was identified as a high level of risk and requires immediate action based on RULA and REBA scores. To reduce MSDs symptoms and posture risk scores, a portable platform and handle wheel chain was proposed. Based on NASA-TLX result the operators perceived that workload as somewhat high to high with score 49-60 on average (scale 1-100). Addition outsourced personnel was suggested to decrease the workload level in a certain operation.
Design an innovative waste recycling trash bin based on the requirements from customers (Binusian) in Bina Nusantara University
Authors: Herawan Safarudin Gazali , Bagaskara Anjas
Published: March 2020

The problem regarding waste recycling is still difficult to do, especially in an environment where the level of public awareness is still less concerned with the importance of cleanliness. At Bina Nusantara University there are organic and nonorganic trash bins, but the function is still not optimal due to the unfavorable interest of Binusian to use it or to carry out recycling activities. The survey was conducted using a questionnaire to 114 Binusian respondents qualitatively to get responses from 14 attributes related to recycling care and the design of the trash. The response from these 14 attributes will be the customer voice that is processed using Quality Function Deployment (QFD) to determine technical priorities that can be used to meet customer requirements. From the planning matrix, the factors that must be improved are the availability of organic and nonorganic waste bins, as well as improvements to the design of existing trash bins at Bina Nusantara University. Implementation of technical requirements in the form of rewards for recycling activities carried out especially for plastic waste, making redesigns for unique and innovative bins with 70% stainless steel and 30% fiberglass, and making a system that is integrated with accounts for rewarding is expected to be able meets 14 customer requirement attributes.
Partial least squares structural equation modelling approach: how e-service quality affects customer satisfaction and behaviour intention of e-money
Authors: Ariyanti Fransisca Dini , Joseph Anastasia Alowisius
Published: March 2020

The purpose of this study is to find out how E-service quality (E-SQ) affects customer satisfaction (CS) and behaviour intention (BI) in electronic money. The research method used is Partial Least Square-Structural Equation Modelling, PLS-SEM to determine the relationship between E-SQ to CS, E-SQ to BI, CS to BI and the relationship of E-SQ to BI with CS as a mediating variable. In processing data, it is known that E-SQ significantly affects CS with a value of 81.1%. Non-significant E-SQ affects BI with a value of 0.056, where E-SQ significantly affects BI with CS variable as a mediating variable with a value of 0.599. Based on the calculation results, it is found that CS directly affects BI users of electronic money ABC with a value of 0.669. This shows that the higher the E-SQ given, the higher the level of customer satisfaction will also have an impact on BI users of electronic money X-cash.
Germination enhancement of green bell pepper (Capsicum annuum L) by using non thermal argon plasma
Authors: Kasih Tota Pirdo , Purwondho Rudy , Danil Daliansyah , Radjagukguk Reinhart , Bagaskara Anjas
Published: March 2020

An attempt to enhance the germination of green bell pepper has been tried by using dry processing non thermal (cold) argon plasma treatment. As an emerging non thermal technology, cold plasma could be used to give a pretreatment to a thermal-sensitive material, such as pretreatment to seeds of bell pepper prior to be planted in soil to understand the effect of this dry process during the germination period. In this experiment, the used argon plasma was generated by flowing argon gas with the rate of 2 L/min through a positively charged of stainless pipe at a distance of 15 mm from aluminum plate electrode. With an applied voltage of 9.8 kV (peak-to-peak) electrical energy from a high voltage AC power supply, argon plasma irradiation was employed to the bell pepper seeds for a predetermined period of time as pretreatment to the seeds during pre-planting. It was found that the temperature of the plasma never exceeded 35°C during the plasma irradiation to assure that no thermal damage occurred to the seeds. It was also confirmed from this study that by giving non thermal plasma treatment for 30 minutes to the seeds may enhance the germination of the bell pepper plants up to 90% in stem length and almost 2.5 times in root length compared to the pepper without treatment.
Comparison of Simulated Annealing, Nearest Neighbour, and Tabu Search Methods to Solve Vehicle Routing Problems
Authors: Wicaksono Purnawan Adi , Puspitasari Diana , Ariyandanu Sigit , Hidayanti Rizka
Published: March 2020

The high cost of logistics is often caused by the determination of distribution routes, vehicle selection, and vehicle scheduling which is often referred to as Vehicle Routing Problem (VRP). VRP can be interpreted as determining the route with minimal costs to deliver goods from a depot to several different customers with different requests. PT Polar Ice Crystal Semarang is a company producing crystal ice that distributes crystal ice in the Semarang area. PT Polar Ice Crystal Semarang does not have a structured and systematic method in determining distribution routes so the company cannot calculate or know how effective the route travelled by the fleet. So far, the determination of distribution routes is left entirely to the driver of the fleet without any route instructions from the company. Therefore we need a method that can determine the distribution route so that the route passed can be effective in terms of cost and time of distribution. In this research, the determination of the optimal distribution route uses three different methods, namely the Simulated Annealing Algorithm, Tabu Search, and Nearest Neighbour. Then the best method is chosen that can produce the optimal route for the company. Based on the calculation results, it can be seen that the optimal route is obtained using the simulated annealing algorithm with estimated travel costs incurred in the amount of Rp. 293,000.17, with a distance of 88.66 km and a travel time of 9 hours 56 minutes using one large vehicle.
Measurement of perception and implementation of sustainable supply chain management at PT Tetra Pak Indonesia
Authors: Kristina Helena J , Christiani Agustina , Jobiliong Eric , Therio Letycia , Andreanto Reza
Published: March 2020

Sustainable supply chain management (SSCM) is a form of proactive action taken by the company and its supply chain to remain competitive by introducing products and production processes that are environmentally friendly and socially responsible.PT Tetra Pak Indonesia as a company engaged in the processing and packaging for food and beverages, is committed to reduce the environmental impact of all operations and prioritize environmental aspects for each product and solution offered. Although there have been many sustainability efforts undertaken by PT Tetra Pak Indonesia, the perspective and implementation of its sustainable supply chain management has never been measured. This research was conducted to measure the perception and implementation of sustainable supply chain management (SSCM) activities of PT.Tetra Pak Indonesia, in order to add information about the development of sustainable supply chain management practices in Indonesia. Data were collected in two ways: in depth interviews and questionnaires. Based on the result of interview and questionnaire, PT.Tetra Pak Indonesia gets an actual implementation index value of SSCM activities of 0.88, and has an overall perception index value of 0.85. This indicates that PT. Tetra Pak Indonesia is a company that has a perception towards sustainability and has actually implemented SSCM activities.