Parameter estimation of distributed hydrological model using polynomial chaos...Putika Ashfar Khoiri
The document is a study report that outlines the contents and methodology for a master's thesis on using polynomial chaos expansion (PCE) to optimize parameters in a distributed hydrological model (DHM) and improve simulation accuracy. It describes:
1) The 5 chapters that will be included in the thesis, covering the introduction, study area, DHM parameter optimization methodology using PCE, results, and conclusion.
2) The methodology which will construct a parameter estimation system using PCE for the DHM and evaluate its applicability in the Ibo River watershed. Sensitivity analysis and PCE will be used to optimize parameters and improve model reproducibility.
3) An example of sensitivity analysis results for DHM parameters at different
The Yumesaki Immersed Tunnel is a 2,138m tunnel located in Osaka, Japan that connects the artificial islands of Yumeshima and Sakaishima. It was constructed between 2000-2009 using immersed tunneling techniques to shorten construction timelines. Special technologies like flexible joints and key element construction were required to account for the young and soft ground conditions and potential for large subsidence over time. Careful monitoring and measurement of ground movements and structural forces was also necessary during construction of this important project to strengthen Osaka port infrastructure.
The document provides education and work experience details for Putika Ashfar Khoiri, including degrees earned from universities in Indonesia and a current master's program focused on flood modeling and uncertainty analysis at Osaka University. It also lists Khoiri's research interests and current thesis project simulating a past flood event in Surabaya City through assessing uncertainties in hydraulic modeling and flood mapping. Additional sections give information on Khoiri's laboratory life at Osaka University along with activities like site visits, lectures, student meetings, volunteer work and enjoying life in Osaka.
Evaluation of international program of maritime and urban engineering fkPutika Ashfar Khoiri
This document summarizes an international program in maritime and urban engineering at Osaka University from the perspective of a master's student. Some key points:
1) The program is conducted in English, allowing international students to study in Japan despite potential language barriers. It also increases global collaboration.
2) Studying at Osaka University offers affordable tuition and many scholarship opportunities. The university and city of Osaka provide a safe environment to learn.
3) The program encourages interaction between international students through lab seminars and site visits, helping students gain broader perspectives on their research topics.
4) The student suggests increasing support for international students to complete their research and developing an alumni network after graduation.
Parameter estimation of distributed hydrological model using polynomial chaos...Putika Ashfar Khoiri
The document is a study report that outlines the contents and methodology for a master's thesis on using polynomial chaos expansion (PCE) to optimize parameters in a distributed hydrological model (DHM) and improve simulation accuracy. It describes:
1) The 5 chapters that will be included in the thesis, covering the introduction, study area, DHM parameter optimization methodology using PCE, results, and conclusion.
2) The methodology which will construct a parameter estimation system using PCE for the DHM and evaluate its applicability in the Ibo River watershed. Sensitivity analysis and PCE will be used to optimize parameters and improve model reproducibility.
3) An example of sensitivity analysis results for DHM parameters at different
The Yumesaki Immersed Tunnel is a 2,138m tunnel located in Osaka, Japan that connects the artificial islands of Yumeshima and Sakaishima. It was constructed between 2000-2009 using immersed tunneling techniques to shorten construction timelines. Special technologies like flexible joints and key element construction were required to account for the young and soft ground conditions and potential for large subsidence over time. Careful monitoring and measurement of ground movements and structural forces was also necessary during construction of this important project to strengthen Osaka port infrastructure.
The document provides education and work experience details for Putika Ashfar Khoiri, including degrees earned from universities in Indonesia and a current master's program focused on flood modeling and uncertainty analysis at Osaka University. It also lists Khoiri's research interests and current thesis project simulating a past flood event in Surabaya City through assessing uncertainties in hydraulic modeling and flood mapping. Additional sections give information on Khoiri's laboratory life at Osaka University along with activities like site visits, lectures, student meetings, volunteer work and enjoying life in Osaka.
Evaluation of international program of maritime and urban engineering fkPutika Ashfar Khoiri
This document summarizes an international program in maritime and urban engineering at Osaka University from the perspective of a master's student. Some key points:
1) The program is conducted in English, allowing international students to study in Japan despite potential language barriers. It also increases global collaboration.
2) Studying at Osaka University offers affordable tuition and many scholarship opportunities. The university and city of Osaka provide a safe environment to learn.
3) The program encourages interaction between international students through lab seminars and site visits, helping students gain broader perspectives on their research topics.
4) The student suggests increasing support for international students to complete their research and developing an alumni network after graduation.
This document provides instructions for searching observation data from a Japanese government website. It lists station names that can be clicked to access water elevation and discharge data on a monthly, annual, or hourly basis.
Improving Distributed Hydrologocal Model Simulation Accuracy Using Polynomial...Putika Ashfar Khoiri
1) The document discusses applying the Polynomial Chaos Expansion (PCE) method to optimize parameters in distributed hydrological models and improve simulation accuracy.
2) PCE involves approximating a model output as a polynomial function of uncertain input parameters. It can efficiently estimate model outputs across the parameter space.
3) The author plans to use PCE to optimize soil-related parameters like layer thickness and hydraulic conductivity in a distributed hydrological model of the Ibo River catchment. Determining the optimal polynomial order for the model is a key future task.
1. The document summarizes a study report on simulating past flood events in Surabaya City to derive probabilistic flood maps. It outlines flood modeling done for 3 events using hydrological and hydraulic models.
2. Key results presented include flood inundation maps, discharge and velocity outputs from the hydrological model, and evaluation of routing results comparing simulated and observed downstream hydrographs.
3. Next steps discussed are rating curve estimation, evaluating model parameters like roughness coefficients, and developing probabilistic flood maps and estimating damage.
This study report summarizes a flood simulation analysis conducted for Surabaya City using the Nays2D flood model. The objectives were to simulate past flood events to identify flood routing, inundation areas, and flooded velocity magnitudes. The analysis used a 2D flood model with topographic data, roughness coefficients, and observed discharge data as boundary conditions. The initial results showed limitations in representing flood routing along rivers. Adjusting the river data and roughness coefficients improved routing but larger domains may be needed. Future tasks include validating results against additional data and tributaries to reduce biases.
This document discusses various technologies for improving vehicle safety. It outlines technologies for active safety that help prevent accidents, such as collision warning systems, visible enhancement technologies, adaptive cruise control, anti-lock braking systems, and lane assistance. It also discusses pre-collision systems that help mitigate damage during accidents, such as collision mitigation braking. Passive safety technologies aimed at reducing injury during accidents are also outlined, including crumple zones, airbags, and head restraints. Evaluation methods for testing these technologies include crash tests using dummies to assess injury risk and pedestrian protection performance tests.
Senri New Town was constructed in Osaka, Japan beginning in 1958 to address a housing shortage after World War II. It is located 15 km north of Osaka City on former agricultural land. The town was designed based on the neighborhood unit theory, with district centers located near train stations providing shops, services, and parks accessible by foot. Infrastructure like rail lines connect the new town to Osaka City. Pedestrian walkways and a variety of public green spaces were incorporated throughout Senri New Town's residential neighborhoods.
The problem of application based transportation in indonesiaPutika Ashfar Khoiri
The document provides an overview of public transportation modes in Indonesia, including motorcycle buses, passenger cars, rickshaws, and special systems like TransJakarta BRT and KRL commuter rail. It then discusses the development of app-based transportation services from Gojek, Grab and Uber, noting their advantages of convenience and lower prices through driver fees and market expansion goals. However, it also outlines problems these services pose through disrupting regulations and established operators, as well as safety issues since private vehicles used for rides lack commercial licensing and inspections.
1) The Brantas River Basin provides water for irrigation of 907,000 hectares of land, industries using 159 cubic meters per year, and domestic use of 288 cubic meters per year in East Java, Indonesia.
2) The river faces issues of floods and droughts annually due to lack of infrastructure, as well as land use changes, sedimentation, and poor maintenance of existing structures.
3) Beginning in the 1940s, several master plans were developed with Japanese and World Bank assistance to implement flood controls, irrigation, and hydropower projects. The current plan emphasizes integrated watershed management.
This document provides details about a proposed ocean thermal energy conversion (OTEC) project in Halmahera, Indonesia. It includes tables showing the current power needs in Maluku and North Maluku provinces, assumptions for calculating the electrical potential of a 100 megawatt OTEC plant, and variables used to estimate the payback period. The proposed land-based OTEC system in Halmahera could generate 93.1 gigawatt hours annually and have a payback period estimated through calculations accounting for factors like inflation, income, expenses, and discount rate.
Unsteady Flow Model For Past Flood Events Estimation in SurabayaPutika Ashfar Khoiri
1) A one-dimensional unsteady flow model was developed for the Surabaya River and its tributaries to simulate past flood events in Surabaya City, Indonesia.
2) The model was calibrated using hydrological data including rainfall, discharge hydrographs, and water level recordings.
3) Preliminary results show the model can simulate changes in water surface elevations over time within the river channels, but has limitations in representing actual inundated areas.
Integrated design and performance target of conceptual architecture designPutika Ashfar Khoiri
This document summarizes the key aspects of an integrated design process for architectural and spatial design projects. It discusses establishing performance targets, conducting site inventory and analysis, developing conceptual diagrams, managing budgets, creating construction documents, and observing construction. The integrated process aims to involve interdisciplinary teams throughout all phases of a project to collectively research, analyze, communicate, and explore design solutions considering physical, biological, and cultural site impacts.
The importance of Public Transportation System in Indonesia for Reducing Traf...Putika Ashfar Khoiri
1) Traffic congestion in Indonesian cities like Jakarta is a major problem due to the high number of private vehicles, especially motorcycles. 2) The government has tried to address this by improving public transportation infrastructure like bus systems, but ridership remains low due to outdated equipment and poor service quality compared to private vehicles. 3) Key recommendations are improving public transportation quality and convenience, promoting remote work, limiting older vehicles on main roads, and establishing car-free zones to incentivize greater public transportation use and reduce traffic.
Regulations and Policy Analysis of Brantas River Basin(Introduction)Putika Ashfar Khoiri
The document provides information on regulations and policy analysis of the Brantas River Basin in Indonesia. It summarizes key details about the river basin including its length of 320km, drainage area of 11,800 square km covering 9 regencies and 5 municipalities with a population of 15.5 million people. It also outlines average rainfall, water potential, and involvement of various Indonesian and international institutions in research and management of the river basin.
The document discusses the chimera grid method for computational fluid dynamics simulations of complex geometries. It has two main elements: (1) decomposition of the computational domain into sub-domains that are each gridded independently, and (2) communication of solution data between sub-domains through interpolation. Overlapping grids allow each sub-domain to be gridded with structured grids while handling interfaces through hole and outer boundaries. The chimera grid method makes it possible to model problems with complex geometries using easier-to-generate body-fitted grids. It has been used successfully for simulations of configurations like the integrated space shuttle.
Energy Saving Building in Ritsumeikan University Osaka Ibaraki CampusPutika Ashfar Khoiri
Ritsumeikan University in Ibaraki, Osaka has implemented several green energy technologies and design features to reduce CO2 emissions and energy consumption on campus. The main building generates electricity also used by two other buildings. Passive solar designs keep buildings naturally lit and heated. A points-based system encourages students to travel off-campus, and the university's facilities can support the community in emergencies.
The document discusses the use of thermal energy storage (TES) systems in buildings in Japan. Specifically, it examines two buildings in Nakanoshima that utilize different TES technologies: the Nakanoshima 2 Osaka Festival Tower uses water TES, while the Head Office of Kansai Electric Power Company uses ice TES. Both systems use water from nearby rivers as a heat source for cooling and heating, without the need for cooling towers. The ice TES system helps reduce energy consumption for air conditioning by making and storing ice overnight when energy demand is lower.
Aij standard for structural design of reinforced concrete boxed shaped wall s...Putika Ashfar Khoiri
This document provides an overview and summary of the AIJ Standard for Structural Design of Reinforced Concrete Boxed-Shaped Wall Structures published by the Architectural Institute of Japan. The summary includes:
1) Reinforced concrete box-shaped wall structures are a common structural system used for residential apartment buildings in Japan, consisting of load-bearing walls, wall beams, slabs, and foundations.
2) The standard was developed based on experimental testing and the excellent seismic performance of these structures. No significant damage was observed in buildings meeting this standard even during major earthquakes.
3) The standard provides specifications for wall arrangement, thickness, reinforcement, and other structural details to ensure adequate strength and prevention of
1) The document summarizes key aspects of Indonesian building code regulations (SNI) regarding earthquake-resistant design methods.
2) It covers general requirements, building structure design, performance factors, and the effects of earthquakes on building components.
3) Building risk categories are defined based on potential lives lost, with associated significance factors used to determine design earthquake loads.
This document discusses earthquakes in Indonesia and provides several case studies. It begins with background on plate tectonics in Indonesia and how the interaction of plates results in frequent earthquakes. Several major historical earthquakes are described, including the 2004 Sumatra earthquake and tsunami. Case studies of the 2014 Molucca Sea and 2012 Northern Sumatra earthquakes analyze fault mechanisms, slip distributions, and seismic wave modeling. The document concludes with discussions of seismic hazard maps and building code considerations in Indonesia given the earthquake risks.
This document provides instructions for searching observation data from a Japanese government website. It lists station names that can be clicked to access water elevation and discharge data on a monthly, annual, or hourly basis.
Improving Distributed Hydrologocal Model Simulation Accuracy Using Polynomial...Putika Ashfar Khoiri
1) The document discusses applying the Polynomial Chaos Expansion (PCE) method to optimize parameters in distributed hydrological models and improve simulation accuracy.
2) PCE involves approximating a model output as a polynomial function of uncertain input parameters. It can efficiently estimate model outputs across the parameter space.
3) The author plans to use PCE to optimize soil-related parameters like layer thickness and hydraulic conductivity in a distributed hydrological model of the Ibo River catchment. Determining the optimal polynomial order for the model is a key future task.
1. The document summarizes a study report on simulating past flood events in Surabaya City to derive probabilistic flood maps. It outlines flood modeling done for 3 events using hydrological and hydraulic models.
2. Key results presented include flood inundation maps, discharge and velocity outputs from the hydrological model, and evaluation of routing results comparing simulated and observed downstream hydrographs.
3. Next steps discussed are rating curve estimation, evaluating model parameters like roughness coefficients, and developing probabilistic flood maps and estimating damage.
This study report summarizes a flood simulation analysis conducted for Surabaya City using the Nays2D flood model. The objectives were to simulate past flood events to identify flood routing, inundation areas, and flooded velocity magnitudes. The analysis used a 2D flood model with topographic data, roughness coefficients, and observed discharge data as boundary conditions. The initial results showed limitations in representing flood routing along rivers. Adjusting the river data and roughness coefficients improved routing but larger domains may be needed. Future tasks include validating results against additional data and tributaries to reduce biases.
This document discusses various technologies for improving vehicle safety. It outlines technologies for active safety that help prevent accidents, such as collision warning systems, visible enhancement technologies, adaptive cruise control, anti-lock braking systems, and lane assistance. It also discusses pre-collision systems that help mitigate damage during accidents, such as collision mitigation braking. Passive safety technologies aimed at reducing injury during accidents are also outlined, including crumple zones, airbags, and head restraints. Evaluation methods for testing these technologies include crash tests using dummies to assess injury risk and pedestrian protection performance tests.
Senri New Town was constructed in Osaka, Japan beginning in 1958 to address a housing shortage after World War II. It is located 15 km north of Osaka City on former agricultural land. The town was designed based on the neighborhood unit theory, with district centers located near train stations providing shops, services, and parks accessible by foot. Infrastructure like rail lines connect the new town to Osaka City. Pedestrian walkways and a variety of public green spaces were incorporated throughout Senri New Town's residential neighborhoods.
The problem of application based transportation in indonesiaPutika Ashfar Khoiri
The document provides an overview of public transportation modes in Indonesia, including motorcycle buses, passenger cars, rickshaws, and special systems like TransJakarta BRT and KRL commuter rail. It then discusses the development of app-based transportation services from Gojek, Grab and Uber, noting their advantages of convenience and lower prices through driver fees and market expansion goals. However, it also outlines problems these services pose through disrupting regulations and established operators, as well as safety issues since private vehicles used for rides lack commercial licensing and inspections.
1) The Brantas River Basin provides water for irrigation of 907,000 hectares of land, industries using 159 cubic meters per year, and domestic use of 288 cubic meters per year in East Java, Indonesia.
2) The river faces issues of floods and droughts annually due to lack of infrastructure, as well as land use changes, sedimentation, and poor maintenance of existing structures.
3) Beginning in the 1940s, several master plans were developed with Japanese and World Bank assistance to implement flood controls, irrigation, and hydropower projects. The current plan emphasizes integrated watershed management.
This document provides details about a proposed ocean thermal energy conversion (OTEC) project in Halmahera, Indonesia. It includes tables showing the current power needs in Maluku and North Maluku provinces, assumptions for calculating the electrical potential of a 100 megawatt OTEC plant, and variables used to estimate the payback period. The proposed land-based OTEC system in Halmahera could generate 93.1 gigawatt hours annually and have a payback period estimated through calculations accounting for factors like inflation, income, expenses, and discount rate.
Unsteady Flow Model For Past Flood Events Estimation in SurabayaPutika Ashfar Khoiri
1) A one-dimensional unsteady flow model was developed for the Surabaya River and its tributaries to simulate past flood events in Surabaya City, Indonesia.
2) The model was calibrated using hydrological data including rainfall, discharge hydrographs, and water level recordings.
3) Preliminary results show the model can simulate changes in water surface elevations over time within the river channels, but has limitations in representing actual inundated areas.
Integrated design and performance target of conceptual architecture designPutika Ashfar Khoiri
This document summarizes the key aspects of an integrated design process for architectural and spatial design projects. It discusses establishing performance targets, conducting site inventory and analysis, developing conceptual diagrams, managing budgets, creating construction documents, and observing construction. The integrated process aims to involve interdisciplinary teams throughout all phases of a project to collectively research, analyze, communicate, and explore design solutions considering physical, biological, and cultural site impacts.
The importance of Public Transportation System in Indonesia for Reducing Traf...Putika Ashfar Khoiri
1) Traffic congestion in Indonesian cities like Jakarta is a major problem due to the high number of private vehicles, especially motorcycles. 2) The government has tried to address this by improving public transportation infrastructure like bus systems, but ridership remains low due to outdated equipment and poor service quality compared to private vehicles. 3) Key recommendations are improving public transportation quality and convenience, promoting remote work, limiting older vehicles on main roads, and establishing car-free zones to incentivize greater public transportation use and reduce traffic.
Regulations and Policy Analysis of Brantas River Basin(Introduction)Putika Ashfar Khoiri
The document provides information on regulations and policy analysis of the Brantas River Basin in Indonesia. It summarizes key details about the river basin including its length of 320km, drainage area of 11,800 square km covering 9 regencies and 5 municipalities with a population of 15.5 million people. It also outlines average rainfall, water potential, and involvement of various Indonesian and international institutions in research and management of the river basin.
The document discusses the chimera grid method for computational fluid dynamics simulations of complex geometries. It has two main elements: (1) decomposition of the computational domain into sub-domains that are each gridded independently, and (2) communication of solution data between sub-domains through interpolation. Overlapping grids allow each sub-domain to be gridded with structured grids while handling interfaces through hole and outer boundaries. The chimera grid method makes it possible to model problems with complex geometries using easier-to-generate body-fitted grids. It has been used successfully for simulations of configurations like the integrated space shuttle.
Energy Saving Building in Ritsumeikan University Osaka Ibaraki CampusPutika Ashfar Khoiri
Ritsumeikan University in Ibaraki, Osaka has implemented several green energy technologies and design features to reduce CO2 emissions and energy consumption on campus. The main building generates electricity also used by two other buildings. Passive solar designs keep buildings naturally lit and heated. A points-based system encourages students to travel off-campus, and the university's facilities can support the community in emergencies.
The document discusses the use of thermal energy storage (TES) systems in buildings in Japan. Specifically, it examines two buildings in Nakanoshima that utilize different TES technologies: the Nakanoshima 2 Osaka Festival Tower uses water TES, while the Head Office of Kansai Electric Power Company uses ice TES. Both systems use water from nearby rivers as a heat source for cooling and heating, without the need for cooling towers. The ice TES system helps reduce energy consumption for air conditioning by making and storing ice overnight when energy demand is lower.
Aij standard for structural design of reinforced concrete boxed shaped wall s...Putika Ashfar Khoiri
This document provides an overview and summary of the AIJ Standard for Structural Design of Reinforced Concrete Boxed-Shaped Wall Structures published by the Architectural Institute of Japan. The summary includes:
1) Reinforced concrete box-shaped wall structures are a common structural system used for residential apartment buildings in Japan, consisting of load-bearing walls, wall beams, slabs, and foundations.
2) The standard was developed based on experimental testing and the excellent seismic performance of these structures. No significant damage was observed in buildings meeting this standard even during major earthquakes.
3) The standard provides specifications for wall arrangement, thickness, reinforcement, and other structural details to ensure adequate strength and prevention of
1) The document summarizes key aspects of Indonesian building code regulations (SNI) regarding earthquake-resistant design methods.
2) It covers general requirements, building structure design, performance factors, and the effects of earthquakes on building components.
3) Building risk categories are defined based on potential lives lost, with associated significance factors used to determine design earthquake loads.
This document discusses earthquakes in Indonesia and provides several case studies. It begins with background on plate tectonics in Indonesia and how the interaction of plates results in frequent earthquakes. Several major historical earthquakes are described, including the 2004 Sumatra earthquake and tsunami. Case studies of the 2014 Molucca Sea and 2012 Northern Sumatra earthquakes analyze fault mechanisms, slip distributions, and seismic wave modeling. The document concludes with discussions of seismic hazard maps and building code considerations in Indonesia given the earthquake risks.