bluuebunny/crossref_metadata_2025 huggingface dataset:
Prediction of dynamic response of semi-submersible floating offshore wind turbines by a novel hydrodynamic coefficient model
Authors: Liu Yuliang , Ishihara Takeshi
Published: October 2019

A novel hydrodynamic coefficients model is proposed for the components of floating offshore wind turbine (FOWT). First, the formulas for evaluation of the added mass and drag coefficient for the components of FOWT are proposed to consider the interaction effects between columns as well as the frequency and amplitude dependencies. The global matrices of hydrodynamic coefficients are then evaluated by the proposed formulas and validated by the experimental data from the forced oscillation test. The predicted dynamic response of FOWT is also validated by the water tank test. Finally, the improvement of dynamic behaviour of the platform by the skirts is investigated. The decrease of amplitude and the increase of natural period for the heave motion of the platform with skirts are successfully simulated by the proposed model.
The need for dynamic inflow models for vertical axis wind turbines
Authors: Tavernier D. De , Ferreira C.
Published: October 2019

This paper investigates the need for dynamic inflow models for vertical axis wind turbines (VAWTs). The approach is two-fold. First, dynamic inflow is realised by dynamic thrust on an actuator disk in OpenFOAM. The induction phase shift and amplitude showed a significant dependency on the streamwise location. Second, a reference turbine in surging motion is studied using an actuator line OpenFOAM model as reference and an actuator cylinder model (with and without dynamic inflow model). The Larsen and Madsen dynamic inflow model is able to capture the overall behaviour in dynamic inflow conditions, however, it may be improved in the most upwind and downwind location. This study indicates that the modelling of VAWTs in dynamic inflow conditions may be enhanced by improving the dynamic inflow models.
Uncertainties in offshore wind turbulence intensity
Authors: Caires S. , Schouten J.-J. , Lønseth L. , Neshaug V. , Pathirana I. , Storas O.
Published: October 2019

In the development, design and operation of wind farms the knowledge of wind turbulence intensity is of paramount importance, particularly at hub height. Given that measurements are rare, turbulence intensities are often determined using simplified formulations. These formulations only account for a dependence on wind speed and include a neutral stability assumption. There are, therefore, large uncertainties associated with the results of such formulations. In order to quantify these uncertainties we determine the dependence of turbulence intensity at different heights on the surface wind velocity, wave conditions and vertical temperature gradients from offshore LiDAR wind observations in the North Sea. The turbulence intensity is shown to depend strongly on the atmospheric stability and less strongly on the sea surface roughness. The lower turbulence intensity values are observed under stable atmospheric conditions. The dependence of the turbulence intensity on the surface roughness is higher at the lower levels, with the significant wave height being the sea surface roughness parameters with the stronger correlation with the turbulence intensity.
Hierarchy and complexity in control of large offshore wind power plant clusters
Authors: Kavimandan A , Das K , Hansen A D , Cutululis N A
Published: October 2019

The scope of this paper is to review the hierarchical control architectures for offshore wind power plants (OWPPs) described in the state-of-art literature. A typical WPP control architecture consist of three levels: local wind turbine control level, WPP control level and control of group of WPPs. With more and more OWPPs development in close proximity and integration with the grid, future trends are favourable for large OWPP cluster formations, resulting in the growing need to better outline and interpret the WPP control strategies and propose means to establish coordination between the WPPs within large OWPP clusters. Coordination is essential for large WPP clusters to ensure the variable and stochastic wind power production does not adversely impact the overall grid stability and fulfil the requirement at PCC with optimised operation. Additionally, the paper also highlights the complexities associated with the hierarchical and coordinated control of large OWPPs and recommends ways to address them.
Effect of Wake Meandering on Aeroelastic Response of a Wind Turbine Placed in a Park
Authors: Panjwani B , Kvittem M , Eliassen L , Ormberg H , Godvik M
Published: October 2019

A wind turbine operating inside a wind farm is subjected to increased turbulence intensity and reduced wind speeds resulting in increased fatigue loadings and reduced power production. Furthermore, meandering of the wakes results in increased dynamic loading of the wind turbine. In the present study, a standalone dynamic wake meandering (DWM) model has been developed and implemented in commercial code SIMA. The standalone DIWA model does not require a direct coupling with aeroelastic code, hence it is computationally fast. Although the standalone tool is a good alternative for power and thrust prediction, it does not have the capability to predict the turbine aeroelastic loads. The new DWM program is referred as “Disturbed Inflow Wind Analyzer” (DIWA). Benchmarking studies of DIWA with the literature data are presented and discussed. Overall the DIWA compares well with the literature data and the discrepancies between DIWA and the literature data are discussed. The present studies show that the wake deficit profiles are very sensitive to the eddy viscosity parameters. Finally, the turbulence boxes generated using DIWA have been used for understanding the aeroelastic behaviour of NREL 5MW turbine and one of the wind turbines from the Lillgrund wind park. The estimated power production using both aeroelastic coupled with DIWA turbulence boxes and standalone DIWA (without aeroelastic) are in good agreement with the literature data. The trends of fatigue loads are predicted well, with a few exceptions.
Recommended key performance indicators for operational management of wind turbines
Authors: Pfaffel S , Faulstich S , Sheng S
Published: October 2019

Operational managers of wind turbines usually monitor a big fleet of turbines and thus need highly condensed information to identify underperforming turbines and to prioritize their work. Key performance indicators (KPIs) are a solid and frequently used tool for this purpose. However, the KPIs used in the wind industry are not unified to date, which makes comparison in the industry difficult. Further, comprehensive standards on a set of KPIs for the wind industry are missing. This article identifies and recommends KPIs and provides detailed definitions to make KPIs comparable and to enable benchmarking. The starting point of this work is an industry survey with 28 participants intended to identify commonly used KPIs, collect various possible definitions, and prioritize them. Out of a total of 50 KPIs, we discuss in a next step 33 selected KPIs on performance, maintenance, and reliability in detail and recommend definitions, most of which are based on international standards. As a result, operators can easily use these recommendations to base their system of KPIs. By using this unified set of KPIs, operators can be well-prepared to conduct industrywide comparisons and benchmarks. The survey and this article will also serve as a basis for committee work of the FGW e.V. to develop a corresponding technical guideline.
On the effects of environmental conditions on wind turbine performance: an offshore case study
Authors: Gonzalez E , Valldecabres L , Seyr H , Melero J J
Published: October 2019

Monitoring wind turbine (WT) performance offers a means of identifying abnormal operation, but only if natural disturbances of the operating regime change can be excluded. WT performance monitoring usually relies on the analysis of operational power curves, generally based on data from the supervision control and data acquisition system. However, these curves do not reflect the source of variability, negatively affecting the capabilities for detecting WT abnormal performance. This work aims at understanding and quantifying changes in WT performance variability due to different environmental conditions during normal and wake-free operating conditions, based on an offshore case study. The magnitude of performance fluctuations is highly influenced by environmental conditions, being higher during high turbulence intensity and low wind shear conditions. The Taylor law, with small time windows, is suitable to describe them for low-mid winds in the absence of dedicated wind measurements, often not permanently available offshore, and could potentially result in more effective performance monitoring solutions. Nevertheless, the heteroskedastic nature of the power deviations negatively affects fitting possibilities. The results support the importance of using low data aggregation periods to understand the dynamics of WT performance.
Analysis Lean Construction Application to Reduce Material Waste at Bridge Construction Project
Authors: Sebastian A E
Published: October 2019

This abstract discusses the amount of concrete and steel waste that are produced at the manufacturing stage in Precast Plant as well as examines the processes that cause the generation of waste. This abstract also discusses the implementation of Lean Construction concept in bridge construction projects and the influence of this concept on waste minimization in the construction processes. The study was qualitative research using study case method and also through unstructured interviews to seek information according to the approach used in this research that is Last Planner System. This result of this research proves lean construction contribution to reduce waste.
Spatial analysis for the selection of landfill in Jepara Regency
Authors: Nugroho A , Suharyanto  , Sudarno
Published: October 2019

There are three landfills in Jepara Regency, which are Bandengan, Gemulung, and Krasak. Bandengan uses a controlled landfill system and is estimated to be full in the next 1.68 years. The Gemulung and Krasak still use an open dumping landfill, and they were closed in 2013 complying the Law No. 18 of 2008. Due to the prolonging problems, it is necessary to plan a new landfill with sufficient capacity. The landfill should have sufficient capacity and meet the standard environmental requirements. The objective of this study is to examine the appropriate zones for landfill in Jepara Regency in line with the standards of SNI 19-3241-1994 and literature review. SNI uses two stages of analysis, the regional level stage, which is determining the regions considered to be feasible, i.e. inappropriate zones and stage of elimination, choosing the best site from the location that emerges from the regional stage. The analysis was conducted using the multi spatial criteria with the aid of Geographic Information Systems (GIS). From this spatial analysis, the same scoring technique was then performed which produced a map of recommendations for the various locations. The results showed that there were six feasible zones for the landfill site covering 129.53 ha or 0.13% of the total area of Jepara Regency. The Keling District was chosen as the best location for landfill among the six feasible zones.
The Role of Renewable Energy to Reduce Climate Change: Perspective of Policy Content and Context
Authors: Respitawulan A , Rahayu A Y S
Published: October 2019

Energy needs have increased each year along with economic growth and increasing population number. Indonesia still relies on fossil fuels as an energy source that dominates the national energy mix. Fossil energy has an impact on greenhouse gas emissions that threatens climate change. The role of the government through energy diversification policies has not provided maximum contribution to fulfil energy needs. This study aims to analyze the policy of developing renewable energy in reducing greenhouse gas emissions based on content and context policy, using qualitative method to explain and describe implementation of the renewable energy policy. Data were derived from primary and secondary sources which are conducted in the period of October – December 2018. The result shows that there were several factors from the content and context of policy that have a significant correlation in the renewable energy policy implementation. The political environment has a role in the implementation of policy content related to the benefits that will be perceived by the community. Other policies that influence renewable energy consumption like fuel and electricity subsidy and allocation of resources are needed to implement the policy.
Performance Evaluation and Crack Repair in Building Infrastructure
Authors: Dermawan A S , Dewi S M , Wisnumurti  , Wibowo A
Published: October 2019

The implementation of building infrastructure development to improve people’s lives is important. The use of reinforced concrete structures has increased very rapidly. But many buildings are failed and are not safe because of overloading, changes in function and configuration of buildings, poor maintenance, and natural disasters. Many methods developed to reduce the damage caused by earthquakes so that the development of methods to strengthen and repair building structures is needed to anticipate damage to buildings. This study focuses on beam-column joint cracks with simple building characteristics, column size 20/20 and beam 15/20 (monolithic) with concrete quality fc’= 21 MPa, so it is necessary to evaluate and repair beam-column joint cracks in buildings because of overload. The method used was experimental and testing in a laboratory with a single static load and Ultrasonic Pulse Velocity (UPV) test to determine the density after repair. Test specimens are SK (control-specimens) and SK-repairing. The results showed that the beam-column joint performance before and after repairs had relatively the same flexural strength of 1,669 kg and 1,686 kg, while the stiffness was lower at 14.48%. The velocity after repair average is 3,327.5 m/s (medium-category). The elasticity average modulus of the test is 20.43 GPa.
Toward Inclusive Development Through Smart Economy in Malang Regency
Authors: Yudono A , Satria Dias , Erlando Angga
Published: October 2019

The concept of smart economy is used as an innovation in the economic field based on industry 4.0 and uses a different network system. Bakici et al. (2013) said smart economy includes several points of discussion including the formation of innovation clusters, mutual cooperation between companies, research institutions, and citizens whose role is to develop and promote innovation through the concept of smart economy [1]. Furthermore, the concept of smart economy is used as a form of sustainable economy, by using several definitions and / or other terms such as “Green Economy” and “Green Industry”.They are used to describe effective economics in a more modern way. UNEP defines the Green Economy as an economy that can produce “improved human welfare and social justice, and can significantly reduce the risk of environmental and ecological damage” [2]. The industry’s revolutionary 4.0 Era, which has become a major issue throughout the world, has encouraged Malang Regency to play an active role in regional management using a citizen centric approach. These dimensions are divided into two fundamental considerations, namely the process of innovation, and the ability of competitiveness that is useful for improving the regional economy better and smarter. Based on the issue of economic challenges that occur in Malang Regency, smart economy as a part of smart city element is the focus that will be developed. It consists of 3 (three) important fields including: enterprise and innovation, productivity, then local and interconnectedness.
Analysis of Kendal Ferry Terminal Performance
Authors: Adistirani  , Riyanto B , Setiadji B H
Published: October 2019

Kendal Ferry Terminal which has been operating since 2016 grows continuously in line with public information. As a unit of Tanjung Emas Port, Semarang, based on Masterplan of Tanjung Emas Port, the initial plan was intended as a terminal for “sharing” function. This function urged Kendal Transportation Agency to measure its existing performance to continue improving its performance. This research applied descriptive-quantitative methods that emphasized observation by examining natural conditions, systematically described as a fact in quantitative form. It was started by analyzing the existing demand and supply which increased about 55% in the second year of operation, followed by predicting the passengers’ trend for ten years to reach the assumption of 30% Semarang-Kumai passengers distracted to Kendal-Kumai route, even though it was only departure. Finally, the research analyzed the existing facilities and performance, where the result showed that 65% from indicators stated that the performance is inadequate. The recommendations to improve the performance and to prepare receiving a “sharing” function are provided by increasing ship schedules and supply such as the depth of port pool, adding facilities such as passenger lounge, and realizing connectivity of transportation modes with Kedungsepur BRT lines.
Flood Inundation Assessment under Climate Change Scenarios in Kuantan River Basin, Malaysia
Authors: Winarta B , Juwono P T , Dermawan V , Ali M I , Ramli N I
Published: October 2019

The changing of climate pattern will increase the magnitude and frequency of excessive precipitation events which may trigger the possibility of river flooding with more severe and with higher risks. The objective of this current study is to assess and determine the flood inundation at the midstream to downstream part of Kuantan River Basin without and with consideration on Climate Change Factor (CCF). This coefficient is obtained from a technical guide on future design rainstorm with Climate Change Factor (CCF) by National Hydraulic Research Institute of Malaysia (NAHRIM). Next, design storm used in this study is a 24-hour storm duration and 100 years Annual Recurrence Interval (ARI). The finding of this study shows that climate change brings a significant impact on flood inundation depth and also in area. This result will be useful for city and or state government in term of formulating of appropriate strategies in order to minimize the negative impacts of flooding in Kuantan River Basin.
Effectiveness and Efficiency as a Tool of Measurement of Waste Bank’s Performance
Authors: Meidiana C , Pamungkas Y A , Sari K E
Published: October 2019

The objectives of the study are to measure the efficiency and effectiveness of waste bank as an informal institution in waste reduction. The research was conducted in five waste banks located in Batu District, Batu City. Survey concerning waste bank performance was conducted for about 5 months. The questionnaires were distributed during the survey for effectiveness assessment, while in-depth interview was conducted on waste bank staffs for attaining waste bank characteristics. Overall Equipment Effectiveness (OEE) and Elasticity index were used to measure the waste banks’ effectiveness and efficiency respectively. The waste bank performance was determined by these two parameters. The results showed that all waste banks have low effectiveness indicated by the value of OEE lower than 60%. Meanwhile, the elasticity index varied among the waste banks from 0.57 to 2.74 representing low or high efficiency. Thus, the waste banks’ performance in Batu District was either low or moderate depending on the combination of the two above parameters.
Land Development Recommendation of Bunguran Island as One of the National Border Areas Based on Level of Land Suitability and Land Capability
Authors: Shofarini D I , Arruzzi R K , Firdauz B E N
Published: October 2019

According to PP no 26 of 2008 concerning National Spatial Planning documents, Bunguran Island as national border areas must be monitored and regulated as the front yard of Indonesia. This study used analytical method based on matching between land suitability criteria and land quality data that considered the most severe factors. Data were being analyzed by the criteria of land capability using the classification by The Ministry of Public Works Regulation (20/PRT/M/2007). The results obtained the form of land capability classes in Bunguran Island, which in turn resulted in land capability as the reference in determining land use directives. The direction of land capability was analyzed based on the results of land capability compared to the land use conditions that can be used as a basis for recommendations or directives for land use in Bunguran Island. The parameters used in the classification of land capabilities are slope, drainage conditions, soil permeability, soil type, texture of soil depth, and erosion data. The descriptive analysis process by data parameters were carried out according to the classification of land capabilities. The result of this research was used to compose spatial pattern planning of Bunguran Island based on the land suitability and land capability.
Green Open Space, Towards A Child-Friendly City (A Case Study in Lembah Gurame Park, Depok City, Jakarta Greater Area, Indonesia)
Authors: Yuniastuti E , Hasibuan H S
Published: October 2019

Green Open Space (GOS) is essential to provide a critical ecosystem service that reduces the social stress levels of a community living in densely-populated urban areas. Children, as part of an urban community, are often most affected by the lack of green space. Government seeks to fulfill these rights through its Child-Friendly City (CFC) program. This study aimed to analyze whether the existing GOS had meet the criteria of child-friendly GOS. This research was conducted in Lembah Gurame Park, as one of the urban GOS in Depok City as a part of Jakarta Greater Area. This study employed spatial analysis using GIS and conducted interviews to the visitors to find out the needs of the children on GOS. This study observed the design and management of the Lembah Gurame Park in accordance to the principal of Child-Friendly GOS including landscape, facility and utility, park furniture, flora and fauna, as well as human activities in the Lembah Gurame Park. This study found that the design and management of the GOS is below the optimum for child-friendly GOS. Many facilities and utilities are dangerous for children and very limited activities can be involved by children.
Optimization of Logung Reservoir Performance
Authors: Jamil F F S , Darsono S , Suharyanto
Published: October 2019

Logung Reservoir is located in the Logung River and Gajah River. The upstream is in the Muria Mountains. The main dam of Logung Reservoir is in Tanjungrejo Village, Jekulo Sub-District, Kudus Regency, Central Java. The main purpose of Logung Reservoir in addition to being a flood control infrastructure is to meet the water needs of Logung Irrigation Area of 2.805 Ha and to fulfill the raw water of 200 liters/second for the people of Jekulo and Dawe Districts. This research is intended to obtain the most optimal operation pattern of the reservoir through a reservoir release formula using the Implicitly Stochastic Dynamic Programming method through a more effective and more reliable release policy. The reservoir release formula was then simulated to meet the needs during the 25 year operating period. From the results of optimization and simulation modelling, it showed that the reliability level of reservoirs in meeting irrigation and raw water needs is 80,33%, reservoir resilience is 52,54% and reservoir vulnerability throughout the simulation period is 52,51 million m3.
Development of Road Network Traffic Model in Bandung City
Authors: Pakpahan H M , Adriant I
Published: October 2019

The city of Bandung is a city with a higher number of movements; thus, it allows congestion on certain road segments. Constructing and widening new roads do not become the only solutions, but also by improving the traffic management on these roads. With the study area in some segments of Wastu Kencana Street, Cihampelas, Pajajaran, Pasir Kaliki, Kebon Kawung, and Cicendo, some of which have frequent congestion. Several alternatives have been assessed to implement traffic management policies. The solution alternatives are do nothing and do something. Do nothing alternative means the existing road conditions at the time of the study. Do something alternative consists of three traffic management scenarios: Alternative 1, changing traffic direction but not changing the existing one-way system; Alternative 2, applying a combination of one-way systems with two-way systems; and alternative 3, applying a condition of traffic management using two-way system in all roads. Whereas to evaluate network performance, the cost parameters of the trip, the average Volume Capacity Ratio (V/C), and the average speed are employed. The best policy alternative is Alternative 1 where the V/C value is 0.72, average speed of 27.57 km/hour, and cost of travel of IDR 9,370.87 million/hour.
Expansive Clay Soil Stabilization Using White Soil Material and Sulfuric Acid Solution (H2SO4) For Subgrade in Godong Area - Grobogan District
Authors: Suwantara I K , Wardani S P R , Priastiwi Y A
Published: October 2019

Expansive clay is classified as an unstable soil. Soil stabilization of expansive clay can be achieved by means of replacement, chemical, and physical methods. This research studies the stabilization of expansive clay using chemical methods, by combining white soil from NTT with H2SO4. This study was conducted to determine the effect of adding white soil and H2SO4 to soil physical and mechanical properties and to improve expansive clay. The method used physical and mechanical testing, namely: property test, CBR, UCS, and Oedometer with variations in composition with an addition of 3%, 4%, and 5% white soil from the weight of expansive clay and 5% H2SO4 from OMC water content at 0, 7, 14, and 28 days of aging, then compared to untreated expansive clay. The results showed that physically stabilized clay became inactive, although its plasticity and expansion rate decreased. Mechanically, there was an increase in the compressive and shear strength of 43.82%, and unsoaked CBR density of 83.25% and soaked CBR of 7.4%, which is directly proportional to the aged soil. Swell potential and swell pressure decreased by 90.71% and 65.71% respectively. The optimum composition is the composition with an addition of 3% white soil and 5% H2SO4 at 28 days of aging.
ICT-Based Innovation in the Smart City Masterplan and Its Relation to Regional Planning
Authors: Rachmawati R
Published: October 2019

Masterplan is one of the planning models implemented in Indonesia, including the smart city masterplan. In contrast to the characteristics of the masterplan in general that focuses on products on the physical/spatial the design of smart city masterplan, it is more oriented to strategic planning as an effort to achieve smart city goals. To support this, the smart city masterplan is dominated by ICT-based programs. This paper describes the kinds of smart innovations and its relation with regional planning. The study area consists of two districts which are included in the 100 smart city movements in Indonesia in 2018, namely Blora Regency and Kendal Regency. Commonly smart cities are emphasized in city, but this paper discusses its implementation in regency.
Planning for Urban Green Area and Its Importance for Sustainability: The Case of Jakarta
Authors: Setiowati R , Hasibuan H S , Koestoer R H , Harmain R
Published: October 2019

Population growth and rapid development in Jakarta have caused a reduction in the amount of Green Open Space (GOS) in urban areas. Based on data in 2017, the public GOS managed by the Forestry Agency is only 4.65% and the private GOS can not be counted until now. Although the target of public GOS achievement is 20%, but the green plan is only 7,514.08 ha. The aim of this study is to analyze the extent and distribution of GOS and compare it with green plan. This study used the method of Geographic Information Systems to determine the extent and distribution by comparing the GOS area in year 2011 and 2018. The next step is reviewing the green plan zone according to Jakarta Spatial Planning 2030. Based on the results of this study, it can be concluded that the area of GOS in 2011 was 3,816.34 ha (5.84%) and it decreased in 2018 to 3,473.94 ha (5.31%). The distribution of GOS spreads in 5 administrative cities, with the largest area being in the East Jakarta. The result of the comparison of GOS in 2018 with the green plan shows that there is a lack of green areas of 4,040.13 ha.
Natural Lighting System to Provide Visual Comfort in Library Reading Room at Universitas Budi Luhur, Jakarta
Authors: Kurniasih S , Saputra O
Published: October 2019

The general purpose of natural lighting is to produce quality of light that is efficient and minimizes direct glare, and excess light level ratios. The natural light that enters through a window can come from several sources, namely direct sunlight, clear sky, clouds or reflections of the lower surface and surrounding buildings. The light from each source varies not only from the amount and heat it carries, but also on other qualities, such as colour, spread, and savings. Light is the most important part of human life, to get the right lighting in a space, the right lighting system is needed according to people needs so that visual comfort can be achieved. The library is an important means to support teaching and learning activities and in supporting the implementation of the Three Principles of Higher Education and, the library should be the centre of attention, especially in its lighting system. This study applies a quantitative analysis method with a descriptive approach where the measurement of natural lighting levels and calculation of the dimensions of shading devices are carried out as part of the research stage. The independent variables in this study are the use of shading devices, while the dependent variables observed are natural lighting levels and natural lighting factors. The results of this study are natural lighting systems in the form of design solutions that allow it to apply in the 3rd-floor library reading room at Budi Luhur University.
Sustainable Coastal Protection in Pasuruan City : Jetty Structure in Rejoso Estuary
Authors: Rakhmawati A L
Published: October 2019

Rejoso Estuary has an unstable river mouth and threatens the existence of residents in the surrounding area. The rainy season, marked with high water discharge and river water overflows, affects flood in residential areas located around the coast. It happens due to sediment deposits formed closes the flow of the river to the sea. This study aims to find out an alternative, by processing data such as location maps, wind speed data, tidal data, current velocity, and sediment transport. From the calculation results, the researcher obtained the amount of longshore sediment transport amounting to 205837.7 m3 / year with the rate of perpendicular sediment transport of the coast which was 677915.27 m3 / year. The jetty is planned as the main alternative in this study to concentrate the flow of river water on a predetermined path to the sea, and to anticipate sedimentation due to sediment transport along the coast. The jetty was planned to be installed on the left and right of the estuary with a depth of 1.2 meters and length 25 meters. In this study, the jetty was considered quite effective to protect the estuary from the backwater effect and sedimentation which could cause flooding in the city area.
Transborder Movements of Borderland People in Indonesia – Papua New Guinea (Case Study: Iwur District, Pegunungan Bintang Regency)
Authors: Subagiyo A , Adam U S , Wicaksono A D
Published: October 2019

The border area between Indonesia and Papua New Guinea (PNG) is mostly defined based on geographic coordinates without considering cultural boundaries, which has resulted in high intensity of interaction and trans-border movements in the area. Trans-border movements in the border area of Indonesia and PNG, specifically in Pegunungan Bintang Regency border area, are classified as illegal movements. This is due to lack of border area facilities to accommodate these movements. There are varieties of purposes of trans-border movements in this area, which are classified into 4 categories. They are economic purposes, cultural purposes, social purposes, and political purposes. Circular or temporary movement is a trans-border movement category based on the maximum of 6 months of stay in the destination country. There are three factors that influence the borderlanders on conducting trans-border movements, namely individual characteristics factors, social-economy factors, and cultural factors. The movements are mostly conducted for economic purposes in addition to the influence of individual characteristics factors.
Architectural Concept for Homestay in Rural Area-A Case Study of Homestay Design in Sumbersari Village - Malang
Authors: Sufianto H , Baskara M , Sugiarto B , Citraningrum A , Adhitama M S
Published: October 2019

Sumbersari, a village with wonderful natural views has the potential for ecotourism development in Malang City. As a part of UB Forest area, Sumbersari will be completed with homestay among its existing residential area. This study aims to develop a design guideline of homestay construction. The guideline is essential to ensure buildings and environment will be developed neatly and designed appropriately. A Number of data were collected through site observation and interviews with the local community. Data were examined to seek appropriate components in the guidelines acceptable by residents. This study proposed the size, rooms, layout, typical materials, structural system and typical furnishings for homestay.
Waste Bank System as a Tool to Increase Regional Income and to Manage the Environment
Authors: Widyaningsih N L
Published: October 2019

The increasing number of people in Indonesia and modern economic activities create mobile lifestyle. The demand for goods creates more supply into the market and it needs more economic resources. Production and consumption create waste and pollution. The waste from the household causes tremendous negative impacts on the social, economic, and environmental aspects of life. To solve the unmanaged waste, people build a waste bank where people can collect and give their waste to the waste bank in which it is a unique independent system. Based on the qualitative research at the Central Waste Bank at Makassar City (2019) which has almost one thousand waste bank units and the previous research at Pulo Kambing Waste Bank in East Jakarta (2018) which is already advanced level organization, there are two main goals that it can be seen through the waste bank system. The Central Waste Bank at Makassar City has a top-down approach based on the regional waste management policy. Pulo Kambing Waste Bank in East Jakarta has a bottom-up approach to build their organization capacity. The two main goals that can be achieved through the waste bank system are to increase household income and to manage the environment, focusing on the 3R concept (reduce, reuse, and recycle).
Accelerating Economic Development through Technopark: The staging of National Science-Technopark Formation Process in Indonesia
Authors: Maninggar N
Published: October 2019

Technopark has become a widely cited term when discussing about innovation and technology. The world economy concept has been shifting from traditional based economy to knowledge based economy. This concept fosters an understanding of technopark, functioned as a seedbed of innovation to gain regional development, which is later popularly implemented. There are phases in technopark development in achieving its entire function. In the developing countries, technopark is assumed to be still in its infant phase. Indonesia is one of the developing countries that have declared the policy of technopark establishment in its national mid-term development plan document of 2015-2919. However, a number of national governmental agencies has already taking the role of technopark, even before the policy was issued. The objective of this paper is to explain the technopark stage level in Indonesia as well as to evaluate the assumption on technopark stage in developing country. The method used is case study on two Indonesian national technoparks which will be assessed through two characteristics that forms a technopark, such as physical and functional dimension. The result indicates that the assumption is not entirely correct. Indonesia’s national technopark, despite in its early phase organizationally, has already shifted from its early phase towards development phase functionally.
The Influence of Social Capital and Water Infrastructure on The Level of Happiness Index in Rural Area
Authors: Alfiah R , Listyawati R N , Koesoemawati D J
Published: October 2019

Nowadays, access to drinking water services in Indonesia is below the SDG’s target where 100% of the people must have access to clean water, but based on data from the Ministry of Public Works and Public Housing (2018), there are only 72 percent of Indonesians having access to piped water through The Indonesian Water Supply Company (PDAM) and only 7,474 villages (out of 72,944 villages) have access to piped clean water. To overcome the limited access to drinking water in rural areas, communities are supported to establish community-based drinking water organizations (HIPPAM) to manage local water supply services. Increasing access to adequate drinking water is expected to influence the level of population welfare measured in the happiness index. Sumbermujur Village is one of the villages that can manage water by establishing HIPPAM. From the SNA calculation, it can be seen that the value of social capital in Sumbermujur village are classified as good. The ties formed from the HIPPAM community are very strong. Based on community characteristics and values on the 10 happiness index variables, it was found that all hamlets in Sumbermujur Village belong to the “happy” group. The social relations variable in the happiness index has a similar characteristic with environmental conditions and family harmony.
Spatial Model of Coastal Community Vulnerability of Puger District to Tsunami Disaster Hazard
Authors: Hariyani S , Susilo A , Kurniawan E B , Shoimah F
Published: October 2019

Puger coastal region is prone to tsunami and earthquake disasters. Puger District lies in the coastal zone which is directly adjacent to the Indian Ocean. Village areas included in the Coastal District of Puger are villages of Puger Kulon, Puger Wetan, Mojomulyo, and Mojosari. The potential for tsunami disaster on Puger Beach can affect the safety of the coastal communities of Puger. The location of community settlements is close to the beach, with relatively poor understanding of the danger of tsunami. Moreover, the negligence of an established disaster mitigation plans for tsunamis in Puger coastal region causes high vulnerability in case of tsunami; hence, casualties and property loss can affect the economy of the surrounding community. Based on these conditions, the study aims to assess the level of social, economic, physical and environmental vulnerabilities modelled spatially to determine the level of vulnerability of the community with the aid of Arc GIS 10.2 software. The analysis method employs scoring analysis and spatial analysis. The research output is a spatial model in the form of a community vulnerability map to the threat of a tsunami disaster.
Spatial and Temporal Patterns of the Decreasing Rice Field in Sidorejo Sub-district, Salatiga City, Central Java Province, Indonesia
Authors: Damayanti A , Setiadi A , Febrianti A , Setyawan B A , Angelika P , Setiadi R P
Published: October 2019

The agricultural land conversion and all its utilization happens as time goes by. This conversion commonly happens in Indonesia, including in Sidorejo District, Salatiga City. Sidorejo is one of the potential areas of agriculture, especially for agriculture area in Central Java. The agriculture area in Sidorejo has decreased by 3.12 km2 in the past 10 years (2007 - 2017). The purpose of this research is to map changes of rice field area in spatial and temporal manner. The research variables include topography, river network, farmer education level, farmers’ income, and population. This study utilizes primary data obtained from interviews and questionnaires, while the secondary data is obtained from Centre of Statistical Bureau, Geospatial Information Bureau, and USGS DEM. The analytical method used in this study is overlay and transects in a systematically random sample. The results indicated that rice fields area changes in the western and eastern parts of Sidorejo for 10 years (2007-2017) which were generally triggered by population. Rice field area changing in west correlates with topography, river networks, education levels and low farmer incomes. Meanwhile, rice field area changing in east correlates with the level of education and high income of farmers.
Space Utilization and Transformable Architecture of Peri-Urban Co-Living Concept in Rancaekek, Bandung
Authors: Saputra A N , Lineker D G , Hibaturrahim H E , Nilla D K , Sobandi R , Ekomadyo AS
Published: October 2019

Peri-urban issues are generated by the problem of uncontrolled increase of settlement land-use that converts and decreases the agriculture and water absorption land-use. Development improvement is needed to support food protection and environment sustainability from urbanization pressure.Co-living Rancaekek in Bandung’s peri-urban area is a concept which aims to improve the effectiveness of land use by providing multifunctional living space and household food production through hybrid infrastructure. This residence consists of five families living together in a modular housing unit with an area of 21 m2. Each unit supports families with different responsibilities: farming; food processing; capacity building; building and infrastructure management; and special units for external researchers. The analysis in this paper provides evidence that each responsibility requires specific spatial planning and multifunctional furniture that can support various activities, tools, and processes to enable adaptation in limited space. The solution to space utilization is determined through the proposed movement of furniture based on a review of transformable architecture, namely flexibility and functionality of the space being utilized, to maximize functions in a minimum size space. This research requires deeper research and/or experiments on materials, community acceptance, and a more in-depth review of furniture design in accordance with the concept of transformable architecture.
Literature Review on Spatial Order of Ancient Javanese Cultural Landscape: It May Contains Spatial Continuum Idea
Authors: Maulidi C , Rukmi W I
Published: October 2019

Popular paradigm defines urban area as a Growth-Pole which has been expected to give trickle-down effect and spread welfare to its hinterlands and rural areas. In fact, urban growth tends to generate resource exploitations from its hinterland to comply urban necessity. Those, sharpen the dichotomy between urban and rural welfare and generate Desakota phenomenon. New paradigm sought as an alternative strategy seeks balance in the role of rural-urban linkages. This study aimed to bring out a model of spatial order that had existed in ancient Javanese civilization which followed a philosophy of maintaining the balance between human and nature in utilizing environment. Qualitative research was conducted through content exploration on ancient Javanese civilization references. Those contents were cross-diachronic to unravel the connection between politic and economic situation when that spatial order model had existed. Wenua (village) was located in a configuration that followed four geographic directions: at north, south east, west, and one in the middle of the fourth villages. Market was held rotationally among five villages through rotation Pekan Mechanism. This rotation system gave each village opportunity to become central pole for the economic activity in the region. Therefore, economic vitality was able to spread equitably over the villages.
The Influence of Physical Quality on Service Scale and Frequency of Visits in “Alun-Alun Malang” City Square Park
Authors: Kurniawan E B , Purnamasari W D , Setyono D A , Astrini W
Published: October 2019

Malang City is one of the cities with rapid physical growth, but the availability of green open space (RTH) is inadequate. The construction of RTH as a solution to fulfill 20% of public RTH raises new problems of: the occurrence of inequality in the use of city parks. There are city parks that are not functioned optimally, judging from the intensity (number and frequency). Based on these conditions, the study aims to assess the performance, service scale and frequency of visits in Alun-Alun Malang Park, Klojen District, Malang City. The method of analysis utilizes park quality analysis, park service scale analysis, frequency of park visits analysis, and multiple linear regression analysis. Based on the results of the regression test, it is apparent that there is an influence between the park service scale and the services quality of Alun-Alun Malang Park, including amenities (X1), easy access (X4), and facilities completeness (X5). Based on the regression analysis using the successive intervals method, it is obvious that variables which significantly influence the frequency of parks visits, are amenities (X1), security and safety (X2), parks identity (X3), easy access (X4), facilities completeness (X5), park beautiness (X6), activity diversity (X7), user diversity (X8).
Defining Gap between Housing Land Value and the Facilities Provision in Urban Housing Development by Private Developers in Malang City, Indonesia
Authors: Wijaya I N S
Published: October 2019

One of Indonesian government strategy in fulfilling the national housing target is by improving private developer’s roles in housing provision. Due to the provision of housing facilities, obligated by Indonesian government for every private developer since 1987, the practical implementation shows opposite circumstances for the private residential area. This research aims at describing conflict between the fulfilment of urban housing facilities and the housing land price in Malang City. Hence, comparison between the existed land prices to the availability of facilities is conducted to identify the gap. Since the price-contour is resulted by the land price mapping, this paper compares between the price and the existed facilities in order to show the practical gaps between the prices and the facilities. Finally, this research indicates: 1). The residential areas with unfulfilled facilities are located at the urban area with high prices, 2) Theefficiency of housing prices becomes the main motivation of the developers in building the facilities, without much consideration on environmental quality of the residential areas.