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Perceptions and adaptation strategies of the community against flood risk at the estuary riverbank of Bone River, Gorontalo Province

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IOP Conference Series: Earth and Environmental Science 2019年第1期235卷

作者： S Maryati S Eraku M Kasim Geography Education Study Program Department of Earth Science and Engineering Faculty of Mathematics and Natural Sciences Universitas Negeri Gorontalo 96128 Indonesia Engineering Geology Study Program Department of Earth Science and Engineering Faculty of Mathematics and Natural Sciences Universitas Negeri Gorontalo 96128 Indonesia

Indonesia is a country prone to natural disasters that are influenced by natural factors and human factors. Natural disasters that commonly occur in Indonesia are floods, sea tides, landslides, earthquakes, volcanic eruptions, hurricanes, and drought. Among these disasters, floods are the most frequent natural disasters in various parts of Indonesia. During 2015 there was 1732 incidence of disasters in Indonesia, 92.67% of the disasters are landslides, tornado, and flood (Indonesian National Disaster Management Agency – BNPB, (2016). Refer to BNPB (2018), during 2017, 979 incidences of flood disaster occurred in Indonesia where 2.518.578 people were affected by the flood disaster. Considering that flood is a common disaster in Indonesia, people should have flood preparedness. This research was conducted at the estuary of Bone River Gorontalo Province. The Bone River is one of the longest rivers in Gorontalo Province that cross Bone Bolango Regency and Gorontalo City. There are many communities are living in river estuaries that belong to densely populated areas, so this research is very important to understand perception and adaptation strategy of society to flood disaster. This research was conducted by distributing questionnaires to the community and analyzed quantitatively. The results show that most respondents know that they live in flood-prone areas, floods can cause various impacts, and floods can be prevented and minimized. The research result is expected to be useful in the decision-making process for decreasing flood disaster risk at the estuary of Bone River Gorontalo Province.

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Mechanistic Modeling and Multiscale Applications for Precision Medicine: Theory and Practice

Network and Systems Medicine

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Network and Systems Medicine 2020年第1期3卷 36-56页

作者： Stalidzans, Egils Zanin, Massimiliano Tieri, Paolo Castiglione, Filippo Polster, Annikka Scheiner, Stefan Pahle, Jürgen Stres, Blaž List, Markus Baumbach, Jan Lautizi, Manuela Van Steen, Kristel Schmidt, Harald H.H.W. Computational Systems Biology Group University of Latvia Riga Latvia Latvian Biomedical Reasearch and Study Centre Riga Latvia Centro de Tecnología Biomédica Universidad Politécnica de Madrid Pozuelo de Alarcón Spain CNR National Research Council IAC Institute for Applied Computing Rome Italy Oslo Norway Institute for Mechanics of Materials and Structures Vienna University of Technology Vienna Austria BioQuant Heidelberg University Heidelberg Germany Department of Animal Science University of Ljubljana Ljubljana Slovenia Faculty of Civil and Geodetic Engineering University of Ljubljana Ljubljana Slovenia Department of Automation Biocybernetics and Robotics Jozef Stefan Institute Ljubljana Slovenia Big Data in BioMedicine Research Group Chair of Experimental Bioinformatics TUM School of Weihenstephan Technical University of Munich Freising Germany Chair of Experimental Bioinformatics TUM School of Weihenstephan Technical University of Munich Freising Germany Computational Systems Medicine Research Group Chair of Experimental Bioinformatics TUM School of Weihenstephan Technical University of Munich Freising Germany BIO-Systems Genetics GIGA-R University of Liège Liège Belgium BIO3 - Systems Medicine Department of Human Genetics KU Leuven Leuven Belgium Department of Pharmacology and Personalised Medicine Faculty of Health Medicine and Life Science Maastricht University Maastricht Netherlands

Drug research, therapy development, and other areas of pharmacology and medicine can benefit from simulations and optimization of mathematical models that contain a mathematical description of interactions between systems elements at the cellular, tissue, organ, body, and population level. This approach is the foundation of systems medicine and precision medicine. Here, simulated experiments are performed with computers (in silico) first, and they are then replicated through lab experiments (in vivo or in vitro) or clinical studies. In turn, these experiments and studies can be used to validate or improve the models. This iterative loop of dry and wet lab work is successful when biomedical researchers tightly collaborate with data scientists and modelers. From an educational point of view, the interdisciplinary research in systems biology can be sustained most effectively when specialists have been trained to have both a strong background in the disciplines of biology or modeling and strong communication skills, which make them able to communicate with other specialists. This overview addresses possible interdisciplinary communication gaps. Focusing our attention on biomedical researchers, we describe the reasons for using modeling and ways to collaborate with modelers, including their needs for specific biological expertise and data. This review includes an introduction to the principles of several widely used mechanistic modeling methods, focusing on their areas of applicability as well as their limitations. A potential complementary role of machine-learning methods in the development of mechanistic models is also discussed. The descriptions of the methods also include links to corresponding modeling software tools as well as practical examples of their application. Finally, we also explicitly address different aspects of multiscale modeling approaches that allow a more complete and holistic perspective of the human body. © Egils Stalidzans et al. 2020 Published b

关键词： Iterative methods

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Determining duration of performance-based contracts based on fair payoff for the government and contractors

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IOP Conference Series: Materials Science and engineering 2019年第1期615卷

作者： H T Tjendani W Oetomo IPA Wiguna N Anwar Civil Engineering Postgraduate Program Faculty of Engineering Universitas 17 Agustus 1945 Surabaya Indonesia Civil Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia

Conventional contracts are one of the road maintenance contracts based on the number of jobs measured and paid at an agreed level for different work items or referred to as unit price contracts. Meanwhile, performance-based road maintenance determines the minimum conditions of roads, bridges, and traffic assets that must be fulfilled by contractors. National road maintenance in several developed countries has successfully used integrated contracts, performance-based contracts. This is followed by the developing countries that previously had problems with the quality of national roads in which they were unable to provide the desired level of service. This performance contract prioritizes products and it is up to the contractor how to achieve this. Therefore, the choice of design, application of technology, innovation, process, and management are all determined by the contractors. This allocates higher risks to contractors compared to traditional contracts. But at the same time, it opens opportunities to increase margins where increasing the efficiency and effectiveness of design, process, technology, and management can reduce costs to achieve established standard performance. This study uses simulations to obtain the duration of fair and optimal contracts for the government and contractor. Duration 5-7 years is determined a duration that can provide benefits for both parties.

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3D model of Krakatau volcano subsurface structure based on gravity data

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Journal of Physics: Conference Series 2019年第1期1242卷

作者： D V Oemaiya D Santoso Geophysical Engineering Study Program Faculty of Mining and Petroleum Engineering Institute of Technology Bandung Applied and Exploration Geophysics Research Group Faculty of Mining and Petroleum Engineering Institute Technology Bandung

Krakatau is one of the volcano in Indonesia which has the destructive paroxysmal eruption. Eruption on 1883 was estimated had VEI of 6. The eruption was recorded as one among some most violent volcanic eruption event in the world. Gravity method is one of the geophysical methods that could delineate the subsurface structure base on density variation. Therefore, the objectives of this research are to reconstruct the 3D subsurface structure of the Krakatau volcano especially the approximate location and dimension of the magma chamber. The subsurface model of Krakatau was done by 3D modelling using residual anomaly map. In order to develop the status of magma chamber model, the available information on the geological map of Krakatau and surrounding area was used. Besides that, some information relative to the volcano such as the information derived from earthquake wave attenuation were utilized. The result of the study shows that position its volcano magma chamber is not directly vertical or oblique under the volcano crater and it has multiple chambers which trending northwest-southeast.

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Managing laundry wastewater

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IOP Conference Series: Earth and Environmental Science 2019年第1期248卷

作者： N L Watiniasih I G H Purnama G Padmanabha I M Merdana I N G Antara Study Program of Biological Sciences Faculty of Mathematics and Natural Sciences Udayana University Laboratory of Integrated Material Engineering and Environmental Technology Udayana University Study Program of Public Health Faculty of Medicine Udayana University Faculty of Veterinary Science Udayana University Mechanical Engineering Study Program Faculty of Engineering Udayana University Jl. Raya Kampus UNUD Kampus Bukit Jimbaran Jimbaran Bali 80361 - Indonesia

Laundry services are emerging in every corner of Bali, particularly at suburban area, from cities to villages. These services help the community to ease their burden. However, the burden for the environment is increase. The wastewater from the laundries should be controlled, which should be handled natural ways. One way of reducing the dangerous chemical from the laundry wastewater can be done by Vertical-Sub-surface Flow Constructed Wetland system, using volcanic rocks as substrate of plant grow and the plant as filters. This study aimed to investigate the effectiveness of volcanic rock and Canna plants as a filter for the laundry wastewater. The volcanic rock as substrate for the plant grows was place in layers in a drum and the laundry wastewater was flowed. The parameter of wastewater laundry, such as TDS, BOD, COD and total phosphate were measured before and after treatment. The treatment was run for 6 weeks. The result shows that this system is effective that overall can reduce the parameter measured for 53.86%.

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Determination of retention basin and infiltration well zone for groundwater recharge using GIS-based approach: Case study: Bantaeng regency, South Sulawesi, Indonesia

Determination of retention basin and infiltration well zone ...

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2017 International Symposium on Geoinformatics, ISyG 2017

作者： Devianto, Luhur Akbar Suwarman, Rusmawan Rohman, Asep Iqbal, Rofiq Environmental Engineering Study Program Faculty of Agriculture Technology Brawijaya University Malang Indonesia Meteorology and Hydrogeology Department Faculty of Earth Science and Technology Bandung Institute of Technology Bandung Indonesia Bandung Education and Training Center for Geology Bandung Indonesia Environmental Engineering Study Program Faculty of Civil and Environmental Engineering Bandung Institute of Technology Bandung Indonesia

ISBN: (纸本)9781538616833

Currently, the biggest challenges of the Indonesian Government in water sector is the availability and quality of clean water. The causes of water vulnerability are land use change, rapid population growth, climate change, as well as residential and agricultural activities. In this study, GIS was utilized as tool for determining for retention basin and infiltration well zone as groundwater and surface water conservation. Several criteria were adapted from references such as SNI 03-2453-2002 and Maryland Storm water Design Manual. Several Thematic maps were developed which are slope between 8-30%;clay soil type;open space landuse as paddy field, moor, garden, etc. for developing retention basin zone. While infiltration well zone were needed thematic maps with water table elevation more than 3 m with rock permeability > 2 cm/hr that located outside of hazard zone as well as free of potential pollution as the criteria. Retention basin and infiltration well for aquifer recharge were studied in Bantaeng Regency using GIS tool. Several criteria were set up which allowed building six thematic map and resulting recommendation of retention basin zone as well as infiltration well zone. The results of retention basin zone potentially can be built in Uluere (12.99 km2), Eremerasa (14.19 km2), Sinoa (14.33 km2), and Tompobulu (18.22 km2) districts. While the infiltration well zone are within Eremerasa (20.22 km2) Tompobulu (40.68 km2) and Uluere (45.65 km2) districts. © 2017 IEEE.

关键词： Geographic information systems

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Design of Hexapod Robot Movement Based on Arduino Mega 2560

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Journal of Physics: Conference Series 2019年第1期1165卷

作者： K U Ariawan G S Santyadiputra I W Sutaya Electronics Engineering Study Program Technical and Vocational Faculty Universitas Pendidikan Ganesha Informatics Engineering Education Departement Technical and Vocational Faculty Universitas Pendidikan Ganesha

This study aims to design the movement of the hexapod robot so that it can move straight forward, turn 90 degrees forward, and move forward 180 degrees by applying the tripod gait method to produce a maximum movement pattern. The robot control system uses Arduino Mega 2560 to control the motion of 18 servo motors through the I2C interface servo motor driver - PCA9685. In straight forward motion testing, an average velocity of 6 cm/s was obtained, 90 degree forward motion testing obtained an average speed of 18 degrees/s, while the 180 degree rotational forward motion test also obtained an average speed of 18 degrees/s.

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Removal of mercury (II) from water using magnetic nanoparticles coated with amino organic ligands and yam peel biomass

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Environmental Nanotechnology, Monitoring and Management 2018年 10卷 486-493页

作者： Marimón-Bolívar, Wilfredo Tejeda-Benítez, Lesly Herrera, Adriana P. Research Group DSGAA Research Center of Science and Agro Environmental Resources – CENIGAA Colombia Chemical Engineering Program Universidad de Cartagena Piedra de Bolívar Campus Consulado Avenue street 30 #48-152 Office Cartagena D307 Colombia Pontificia Universidad Javeriana Faculty of Engineering Geophysical Institute Laboratory of Nanotechnology and Nanoscience Colombia Department of Civil Engineering Universidad Católica de Colombia Colombia

It was studied the adsorption of mercury from aqueous systems using magnetic nanoparticles (MNP) functionalized with different organic ligands, such as aminopropyl silane (MNP-APS), peptone (MNP-P), and yam peel biomass (MNP-YP). FTIR spectroscopy was used to determine the presence of chemical groups in all magnetic samples, such as amino radicals (NH₂ ^-), carboxyl (-COOH), and hydroxyl (OH^-), which can contribute to the adsorption of Hg⁺² ions in an aqueous solution. According to the SEM microscope, MNP-APS and MNP-P samples showed a particle size of about 45 and 70 nm, respectively. Additionally this technique allowed the visualization of these nanoparticles in the yam peel biomass. Saturation magnetization Ms was recorded with vibrating sample magnetometer equipment, from which was calculated an Ms of 66.30 emu/g for MNP-APS sample, 66.4 emu/g for MNP-P, and 26.6 emu/g for MNP-YP. Mercury adsorption was evaluated as a function of the pH. From these measurements, it was observed an increase of mercury adsorption as increasing the pH of the aqueous media, obtaining an adsorption of 94% for MNP-APS sample (pH 7.0), 87% for MNP-P (pH 7.0), and 75% for MNP-YP (pH 8.0). The adsorption kinetics showed an equilibrium time of 5 h, with adsorption capacities greater than 80% adsorption for all magnetic samples. Elovich model showed the best fit to the experimental values, while adsorption isotherms were well described with the Temkin isotherm equation, suggesting that only one active site present in the magnetic samples can be involved in the adsorption of mercury ions. © 2018 Elsevier B.V.

关键词： Amino propyl silane Functional ligands Magnetic nanoparticles Peptone Yam peel

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Driving-factors identification of land-cover change in west java using binary logistic regression based on geospatial data

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IOP Conference Series: Earth and Environmental Science 2020年第1期500卷

作者： Udjianna Sekteria Pasaribu Riantini Virtriana Albertus Deliar Irawan Sumarto Faculty of Mathematics and Natural Sciences Mathematics Study Program Institute of Technology Bandung (ITB) 10 Ganesha Street 40132 Bandung Indonesia Faculty of Earth Sciences and Technology Geodesy and Geomatics Engineering Institute of Technology Bandung (ITB) 10 Ganesha Street 40132 Bandung Indonesia

The Land is a fundamental factor in production activity. Accordingly, it is closely related to economic growth—which supports the living needs of human beings. In many cases, human activities related to land use are often uncontrollable, impacting many negative effects on the environment, both locally and globally. More broadly, these activities will lead to some changes in land cover and some other physical features such as climate. In order to understand the phenomenon of land cover changes, we approach them through modelling. To detect any changes in land cover in a region, it is necessary to identify the driving factors causing land-cover change. The relation between driving factors and response variables can be evaluated by using regression analysis techniques. In this case, land cover change is a dichotomous phenomenon, i.e., binary. Binary Logistic Regression (BLR) model is one of the regression analyses which can be used to describe the nature of dichotomy. From the results of this study, the driving factors causing land-cover change in West Java were found, those are: the distances to the central business districts in some certain areas such as Bandung City, Bekasi Regency, Bekasi City, Bogor Regency, Karawang Regency, and Sukabumi Regency; the distance to the the capital of the province; the distance to the main roads; the population numbers; and some physical features of the land such as slope, curvature, and height. This predictive model had an accuracy level of 49,79%, which equals to 1.827.217,44 ha area.

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Single cell protein production by a local Aspergillus niger in solid state fermentation using rice straw pulp as carbon source: effects of fermentation variables

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IOP Conference Series: Materials Science and engineering 2019年第1期543卷

作者： S D Said M Zaki T M Asnawi E Novita Chemical Engineering Department Faculty of Engineering Syiah Kuala University Darussalam Banda Aceh Indonesia Chemical Engineering Graduate Study Program Faculty of Engineering Syiah Kuala University Darussalam Banda Aceh Indonesia

In this study, solid-state fermentation was carried out to produce single cell protein by local Aspergillus niger. Rice straw pulp produced from the pretreatment by liquid hot water at temperature 121 °C for 60 minutes of cooking time was used as carbon source. The effects of nitrogen sources, initial medium pH, C/N ratios of substrates and fermentation time on SCP production were evaluated in these experiments. The single cell protein was measured as crude protein content in the fermentation product by the Kjeldahl analysis method. The maximum crude protein of 18.9 % (w/w) contained in the fermentation product occurred at the fermentation condition with C/N ratio 30:1, the initial medium pH 4, temperature 30 °C, moisture content 75 % and relative humidity 95 %.

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