論文 - 神武　直彦

Comparison of profit-based multi-objective approaches for feature selection in credit scoring

Simumba N., Okami S., Kodaka A., Kohtake N.

Algorithms （Algorithms）  14 （ 9 ）  2021年09月

　概要を見る

Feature selection is crucial to the credit-scoring process, allowing for the removal of irrel-evant variables with low predictive power. Conventional credit-scoring techniques treat this as a separate process wherein features are selected based on improving a single statistical measure, such as accuracy; however, recent research has focused on meaningful business parameters such as profit. More than one factor may be important to the selection process, making multi-objective optimization methods a necessity. However, the comparative performance of multi-objective methods has been known to vary depending on the test problem and specific implementation. This research employed a recent hybrid non-dominated sorting binary Grasshopper Optimization Algorithm and compared its performance on multi-objective feature selection for credit scoring to that of two pop-ular benchmark algorithms in this space. Further comparison is made to determine the impact of changing the profit-maximizing base classifiers on algorithm performance. Experiments demon-strate that, of the base classifiers used, the neural network classifier improved the profit-based measure and minimized the mean number of features in the population the most. Additionally, the NSBGOA algorithm gave relatively smaller hypervolumes and increased computational time across all base classifiers, while giving the highest mean objective values for the solutions. It is clear that the base classifier has a significant impact on the results of multi-objective optimization. Therefore, careful consideration should be made of the base classifier to use in the scenarios.

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Influential factors on aerosol change during covid-19 in ayutthaya, thailand

Kodaka A., Leelawat N., Onda Y., Tang J., Laosunthara A., Saengtabtim K., Sochoeiya P., Kohtake N.

Engineering Journal （Engineering Journal）  25 （ 8 ） 187 - 196 2021年08月

ISSN  01258281

　概要を見る

Various interventions were made by the Thai government to prevent the COVID-19 spread by controlling socioeconomic activities, but the effectiveness of these interventions and other factors have not yet been fully clarified. Thus, this study aims to provide further scientific evidence on those potential factors which affect the socioeconomic activities changes during the pandemic, by using spatial analysis on atmospheric composition. By taking Phra Nakhon Si Ayutthaya Province, Thailand as the case area. Results of the government's COVID-19 measures and statuses of industries were compared with changes in aerosols, including PM 2.5 which was analyzed by Google Earth Engine with nine open datasets including meteorological and hydrological factors. The analysis revealed that the aerosol index in ueban area of the province decreased at 28.03% in 2020 compared in 2019. Besides, PM 2.5 drastically decreased from March 2020, even without the influence of wind speed which as the highest causal relationship, and kept low level compared with previous years. The reason of the tendency would be explained that other than government interventions including national-level state of the emergency decree, reduction of factories’ activities at Rojana Industrial Park and reduction of the number of tourists had significant influence to reduce the mean value of PM 2.5.

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Spatiotemporal integration of mobile, satellite, and public geospatial data for enhanced credit scoring

Simumba N., Okami S., Kodaka A., Kohtake N.

Symmetry （Symmetry）  13 （ 4 ）  2021年04月

　概要を見る

Credit scoring of financially excluded persons is challenging for financial institutions because of a lack of financial data and long physical distances, which hamper data collection. The remote collection of alternative data has the potential to overcome these challenges, enabling credit access for such individuals. Whereas alternative data sources such as mobile phones have been investigated by previous researchers, this research proposes the integration of mobile-phone, satellite, and public geospatial data to improve credit evaluations where financial data are lacking. An approach to integrating these disparate data sources involving both spatial and temporal analysis methods such as spatial aggregation was employed, resulting in various data combinations. The resulting data sets were used to train classifiers of varying complexity, from logistic regression to ensemble learning. Comparisons were based on various performance metrics, including accuracy and the area under the receiver operating-characteristic curve. The combination of all three data sources performed significantly better than mobile-phone data, with the mean classifier accuracy and F1 score improving by 18% and 0.149, respectively. It is shown how these improvements can translate to cost savings for financial institutions through a reduction in misclassification errors. Alternative data combined in this manner could enhance credit provision to financially excluded persons while managing associated risks, leading to greater financial inclusion.

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Government COVID-19 Responses and Subsequent Influences on NO<inf>2</inf>Variation in Ayutthaya, Thailand

Kodaka A., Leelawat N., Tang J., Onda Y., Kohtake N.

2021 2nd International Symposium on Instrumentation, Control, Artificial Intelligence, and Robotics, ICA-SYMP 2021 （2021 2nd International Symposium on Instrumentation, Control, Artificial Intelligence, and Robotics, ICA-SYMP 2021）  2021年01月

ISSN  9781728187600

　概要を見る

The control of economic activities by governments for the purpose of minimizing COVID-19 spread influenced atmospheric conditions. Satellite-based technology is promising to monitor these changes and even non-specialists in geospatial analysis can use it through cloud-based open platforms. This study aims to give scientific interpretation on the causes of the atmospheric changes based on these governmental controls on human activity. The nitrogen dioxide (NO2) levels were monitored in Ayutthaya Province in Thailand in an urban area including industrial zones during January 1 to April 30, 2020. An analysis was conducted with Google Earth Engine by using four datasets including NO2 data from Sentinel-5P. The mean value of NO2 density in 2020 decreased 12.5% compared with that in 2019. The closure of industrial facilities by the government seemed to be a key cause of the phenomena. The decline was statistically tested and resulted in a significant difference between the two periods. As the new daily cases decreased to single digits, the difference became non-significant from May 1, 2020. Single timeseries analysis on NO2 density change enabled visualization of the brief impact of responses and policies made by the government and subsequent economic activities; however, further atmospheric and industrial activity data are required for further assessment.

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Developmental Experiences Related to Retirement from Sport: Insights from Japan

Oulevey M., Hirata D., Lavallee D., Kohtake N.

Journal of Loss and Trauma （Journal of Loss and Trauma）  26 （ 6 ） 576 - 595 2021年

ISSN  15325024

　概要を見る

Psychological support systems for retiring elite athletes can assist them in making career transitions out of sport. The purpose of this study is to further advance research in this area, with a specific focus the developmental experiences related to the sport career transition process in Japan. One retired Olympic medalist was analyzed with a life story analysis method. The findings highlight the psychological difficulties experienced by retiring athletes and the system requirements to help them make an optimal transition.

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Design of entry detection method for top-bounded spaces using GPS SNR and spatial characteristics for seamless positioning in logistics facilities

Tabata K., Nakajima M., Kohtake N.

Sensors (Switzerland) （Sensors (Switzerland)）  20 （ 23 ） 1 - 17 2020年12月

ISSN  14248220

　概要を見る

With the widespread use of indoor positioning technology, various services based on this technology are beginning to be offered to consumers and industrial applications. In the case of logistics facilities, in addition to indoor and outdoor spaces, there are top-bounded spaces (TBSs): elongated areas that are covered with roofs or eaves on the upper parts of buildings. The sides of such spaces are open, and workers and forklifts work in these areas. Only a few studies have been conducted on positioning methods for this unusual environment, and the way by which Signal-to-Noise Ratio (SNR) of Global Positioning System (GPS) changes with the stay in TBSs is unclear. Therefore, we conducted preliminary experiments and confirmed that TBS dwellings are difficult to stably detect with existing methods due to the combination of satellites with variable and unchanged SNRs. In this study, we designed a simple processing flow for selecting satellites with high probabilities of changing SNRs by using the spatial characteristics of TBSs as parameters (height, depth, and side opening orientation). We propose a method to detect the stay in TBSs using the SNR change rates of the selected satellites. As a result of evaluation experiments with three TBSs, we successfully detected the stay in TBSs with about 30% higher probability than those of an existing method.

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Design of multiple spatial context detection method considering elongated top-bounded spaces based on gps signal-to-noise ratio and fuzzy inference

Tabata K., Nakajima M., Kohtake N.

ISPRS International Journal of Geo-Information （ISPRS International Journal of Geo-Information）  9 （ 12 ）  2020年12月

　概要を見る

Numerous studies have been conducted on indoor and outdoor seamless positioning and indoor–outdoor detection methods. However, the classification of real space into two types, outdoor space and indoor space, is difficult. One type of space that is difficult to classify is top-bounded space, which can be observed in commercial facilities, logistics facilities, and street-facing sidewalks. In this study, we designed a method for detecting stays in three spatial contexts: Outdoor, top-bounded space, and indoor. This method considers elongated top-bounded spaces covered with a roof and open on one of the sides. Specifically, we selected Global Positioning System (GPS) satellites for stay detection based on the simple extraction of the spatial characteristics of a top-bounded space and designed a decision flow using fuzzy inference based on the signal-to-noise ratio (SNR) of the selected GPS satellites. Moreover, we conducted an evaluation experiment to verify the effectiveness of the proposed method and confirmed that it could correctly detect the stay in three spatial contexts, outdoor, top-bounded space, and indoor, with a high probability of 93.1%.

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A Dependent Activities Elicitation Method for Designing Area Business Continuity Management

Kodaka A., Ono T., Watanabe K., Leelawat N., Chintanapakdee C., Tang J., Ino E., Kohtake N.

ISSE 2020 - 6th IEEE International Symposium on Systems Engineering, Proceedings （ISSE 2020 - 6th IEEE International Symposium on Systems Engineering, Proceedings）  2020年10月

ISSN  9781728186023

　概要を見る

Area Business Continuity Management integrates both private and public sectors under the concept of Public-Private Partnership against common risks including natural disasters while previous research mainly focused within private sectors or critical infrastructures. Its issue is that the broader range of heterogeneous stakeholders gets involved the more complex and ambiguous their connectivity becomes. Although, a bottom up approach has been proposed that identifies interdependency of stakeholders by aggregating their dependent activities on business continuities, a practical method has not been proposed yet. This research therefore designed a tangible method which enables to elicit dependencies of individual stakeholder by extending ideas of Business Impact Analysis and Risk Assessment. The proposed method was verified through a workshop conducted in an educational program of disaster risk management. It was observed that the method enables to identify not only external dependent activities with necessary management resources for business continuity but also timings of those occurrence in chronological order that would help finding interdependency among stakeholders for formulating Area-BCM.

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User stories-based requirement elicitation for data visualization to support decision making in water resource management at Bago River Basin

Kodaka A., Kawasaki A., Shirai N., Acierto R.A., Zin W.W., Kohtake N.

Journal of Disaster Research （Journal of Disaster Research）  15 （ 3 ） 312 - 323 2020年

ISSN  18812473

　概要を見る

Understanding of system requirements that satisfy end users’ needs is fundamental of system development, yet challenging when end users are unable to address their needs explicitly. Although a number of scholars have been designing and applying requirement elicita-tion techniques, there is a research gap in Spatial Decision Support System (SDSS) with Web-based Geo-graphical Information System (Web-GIS) in water resource management for disaster risk reduction. The gap addresses especially design elicitation techniques and their performances 1) to understand data types used for decision making, 2) set timing for sharing the data to accomplish end users’ tasks, and 3) com-pile the data to be represented so as to facilitate end users’ decision making. This study therefore designed a requirement elicitation technique by advancing User Story Mapping (USM) and validated through a workshop using mock-up system interface with potential end users who are in charge of water resource management in Myanmar’s Bago River Basin. Through the research it could be validated that the user stories-based approach enabled end users to decompose their operation activities into tasks. It also allowed them to link to necessary data with visual image for facilitating their task accomplishments and decision making for water resource management. It was revealed that the benefits of using the designed approach are not only just to summarize necessary data and information for end users’ decision making but also to encourage them to proactively consider data utilization into their oper-ations. For further development of the requirement elicitation to understand end users needs, insights and recommendations for the proposed technique designing and conducting of the workshop were obtained.

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Rapid BLE Beacon Localization with Range-Only EKF-SLAM Using Beacon Interval Constraint

Sato A., Nakajima M., Kohtake N.

2019 International Conference on Indoor Positioning and Indoor Navigation, IPIN 2019 （2019 International Conference on Indoor Positioning and Indoor Navigation, IPIN 2019）  2019年09月

ISSN  9781728117881

　概要を見る

The installation process of numerous Bluetooth Low Energy (BLE) beacons in the indoor positioning environment usually requires the manual measurement of the beacon's physical coordinates which tends to be a labor-intensive process. In this work, we aim to create a BLE beacon map by obtaining their coordinates from in situ Received Signal Strength (RSS) observations on a smartphone in a short period of time. This paper proposes a method of automatic localization for twin BLE beacons based on Range-Only Simultaneous Localization and Mapping (RO-SLAM) approach and multi-hypothesis Extended Kalman Filter (EKF), on the condition that only the relative distance of twin beacons is known. In this method, a person holding a smartphone collects RSS of BLE beacons by walking around with no requirement of predefined trajectory. Normally, the lack of angular information on the sensor involves the difficulty of finding a good initial value of the state vector in the EKF, that requires substantial time to evolve the estimation enough. In our proposed method, tracking the multiple hypotheses which represent the probability distribution of possible locations of the BLE beacon and smartphone makes the results obtainable in a brief RSS survey. The hypotheses generation process employs the interval information of twin BLE beacons to reduce the number of hypotheses and consequently the computational load. The experimental evaluation using commercial off-the-shelf devices show that the proposed method offers a significant improvement in the time required to evolve the location estimation, while the use of twin BLE beacons can suppress the total number of hypotheses.

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Applicability of Civil and Defense Dual Use to Space Situational Awareness System in Japan

Otani Y., Kohtake N.

Space Policy （Space Policy）  47   140 - 147 2019年02月

ISSN  02659646

　概要を見る

This article deals with the possibilities and challenges of Japan's dual-use space situational awareness (SSA) systems. Japan is unique in a way that military use of outer space was completely prohibited for almost 40 years until the Basic Space Act (2008) became effective. The change in its space policy was decided because of the rapidly worsening security environment in East Asia, accompanied by preeminent threats to the safety, stability and sustainable use of outer space that constitutes a prerequisite for the safety and welfare of any country. This has led Japan to begin developing a full-scale SSA operation. However, Japan's long-standing non-military practice forces it to design and develop its SSA systems in a different manner than other advanced spacefaring nations. Given such conditions/restrictions, this article first identifies a Japanese means of constructing full-scale dual-use SSA systems, particularly taking into account the functions and capabilities of the Japan Aerospace Exploration Agency (JAXA), the significance of the Japan-U.S. Alliance and a series of recent governmental decisions. The merits and challenges of Japan's whole-of-government construction of the dual-use SSA will then be explored; this involves difficult processes to coordinate different defense and civil mission requirements. The conclusion envisions a balance between the Japan Air Self Defense Force's superior air defense capability and JAXA's accumulated technical capabilities, which together would enable full-fledged defense space utilization starting with the SSA.

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Non-parametric Prediction Interval Estimate for Uncertainty Quantification of the Prediction of Road Pavement Deterioration

Okuda T., Suzuki K., Kohtake N.

IEEE Conference on Intelligent Transportation Systems, Proceedings, ITSC （IEEE Conference on Intelligent Transportation Systems, Proceedings, ITSC）  2018-November   824 - 830 2018年12月

ISSN  9781728103235

　概要を見る

Road pavements need to be efficiently maintained under budget constraints. A pavement management system supports a road administrator's decision making based on the prediction of pavement deterioration. However, the prediction of pavement deterioration is complicated and uncertain because there are many unobservable variables, and the highly accurate prediction of deterioration is difficult. For pavement administrators to use such predictions in decision making, it is necessary to quantify the reliability of prediction. This paper proposes a prediction interval estimation method by applying the bootstrap method with a reduced computational cost to the deterioration prediction model using a neural network. The proposed method is applied to the rutting depth prediction in the inspection history of road pavement surface, and the estimation accuracy of the prediction interval is verified. In the prediction model, because the inspection history is time-series data, a recurrent neural network model that extends neural networks to time series prediction is used. Verification shows that not only is the computational cost reduced but also the accuracy of the prediction interval is higher than that of the conventional method.

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Alternative scoring factors using non-financial data for credit decisions in agricultural microfinance

Simumba N., Okami S., Kodaka A., Kohtake N.

4th IEEE International Symposium on Systems Engineering, ISSE 2018 - Proceedings （4th IEEE International Symposium on Systems Engineering, ISSE 2018 - Proceedings）  2018年11月

ISSN  9781538644461

　概要を見る

Financial exclusion has a major socio-economic impact on the poor and unbanked. Financially excluded smallholder farmers face challenges accessing credit facilities to fund their farming activities because they lack the financial history data required to create credit scores for credit risk evaluations. Non-financial data sources such as mobile applications have been proposed for the development of credit scoring models. However, context-specific alternative scoring factors which are independent of financial history information, must be developed for credit decision systems that use nonfinancial data. This research proposes an approach to developing alternative scoring factors based on stakeholder's requirements. An example of implementation of the proposed method is given using data collected from farmers in rural Cambodia through surveys and a mobile application. Alternative scoring factors are developed based on stakeholder's requirements and collected data. Multiple logistic regression and support vector machine models are trained and tested on this data to evaluate the selected factors. Models are compared by area under the receiver operating characteristics curve values and accuracy. Additional considerations are made to determine the most suitable model in this context. This stakeholder requirements-based approach can be used to design credit decision systems using nonfinancial data for financially excluded persons and facilitate greater financial inclusion.

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Managing health information system-of-systems by engineering systems multiple-domain modeling approach considering spatiotemporal dynamics

Okami S., Kohtake N.

4th IEEE International Symposium on Systems Engineering, ISSE 2018 - Proceedings （4th IEEE International Symposium on Systems Engineering, ISSE 2018 - Proceedings）  2018年11月

ISSN  9781538644461

　概要を見る

Despite the substantial efforts of various stakeholders, numerous people do not have sufficient access to healthcare services. Though the reliability and timeliness of the health information collected in the healthcare system play critical roles in realizing appropriate healthcare resource allocation, the quality of the health information continues to be of concern. Because the health information system is a system-of-systems that transforms over time in response to the changing environment and needs of the stakeholders, it is important to understand the conditions of transitioning it continuously to improve the data quality. This study examined the continuous management of the health information system-of-systems by the engineering systems multiple-domain modeling approach. The engineering systems multiple-domain matrix framework was applied to model the Cambodian malaria surveillance system. By including the spatiotemporal dynamics of the environmental attributes in the model along with the architectural and process transformation, the transitions of the relative weights of the constituent systems were scored at each interval of time. These scores could be used to optimize the healthcare resource allocation continuously, whereas the considered architectural, process, and environmental changes could contribute to the sustained healthcare access by people.

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Data communication for efficient water resource management among multiple stakeholders: A case study in the bago river Basin, Myanmar

Shirai N., Bhagabati S., Kodaka A., Kohtake N., Kawasaki A., Acierto R., Zin W.

Journal of Disaster Research （Journal of Disaster Research）  13 （ 1 ） 70 - 79 2018年02月

ISSN  18812473

　概要を見る

Cross-sectional communication for data sharing among multiple stakeholders involved in disaster responses is one of the fundamental non-structural measures that directly influence the performance of disaster risk reduction. Taking the event of the 2008 Cyclone Nargis as the watershed experience, Myanmar has been developing a nationwide disaster risk reduction scheme. Transition from the past structure of a vertically divided administration to cross-sectional interaction is underway, making use of lessons learned from past disaster events, yet many challenges remain in communications among stakeholders. To address the issue, this research proposes a communication scheme for data sharing among multiple stakeholders to complement the current scheme for better decision making of the stakeholders during both normal times and emergencies. The proposed scheme is evaluated by the stakeholders, and it is shown that the benefits would include not only the strengthening of the current scheme for decision making but also a contribution to the design of long-term plans in areas such as agriculture, irrigation, and disaster preparedness. This research anticipates further development of the scheme by employing more concrete needs of the stakeholders by reiterating contextual inquiries as well as by physically modeling a database taking case scenarios into account for its design.

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Process Optimization Method for the Simplification of Developing Indoor-Outdoor Seamless Positioning Environment

神武 直彦

31st International Symposium on Space Technology and Science (ISTS) 2018年

研究論文（学術雑誌）, 共著

Transitional complexity of health information system of systems: Managing by the engineering systems multiple-domain modeling approach

神武 直彦

IEEE Systems Journal （IEEE Systems Journal）  13 （ 1 ） 952 - 963 2018年

研究論文（学術雑誌）, 共著,  ISSN  19328184

　概要を見る

A health information system is a system of systems that serves as a foundation of health information used for the evidence-based decision making of public health actions. Since practical solutions for addressing system transformation and its effect on system management have not been extensively discussed, this study examines an approach to model and analyze the transforming health information system of systems. The process and architecture in the case of the Cambodian malaria surveillance system were modeled using the engineering system multiple-domain matrix modeling framework. By using the attributes of the process, architecture, and the risk associated with the environment within the model, relative weights of the constituent systems were scored at each interval of time. The simulated confidence intervals of the absolute difference in the scores indicated that this approach yields the transformation of the system under investigation. By comparing the calculated scores with the results of the simulation test employing an agent-based modeling method, further insights into the process, the limitations, and advantages of the scoring approach were discussed. This approach provides the first step in analyzing the transitional conditions of constituent systems as well as the entire health information system, whereby informed decision making for optimizing continuous system management is facilitated.

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Modeling and Analysis of Health-Information System of Systems for Managing Transitional Complexity Using Engineering Systems Multiple-Domain Matrix

神武 直彦

S. Okami, N. Kohtake, Proc. Annual IEEE International Systems Conference, Apr. 2017, pp. 688-695.    688 - 695 2017年05月

研究論文（学術雑誌）

健康な働き手の維持・増加を促すためのシステム・ダイナミックスによるスマートヘルス普及促進戦略支援モデルの設計と評価

神武 直彦

日本経営数学会誌 2017年03月

研究論文（研究会，シンポジウム資料等）, 共著

Spatiotemporal modeling for fine-scalemaps of regional malaria endemicity and　its implications for transitionalcomplexities in a routine surveillance　network in western　Cambodia.

神武 直彦

Frontiers in Public Health (in revision) 2017年

研究論文（研究会，シンポジウム資料等）, 共著

舗装維持管理効率化のためのニューラルネットワークモデルによる路面性状値予測手法の提案と定量的評価(仮)

神武 直彦

土木学会(通常号)　土木情報学(予定) 2017年

研究論文（研究会，シンポジウム資料等）, 共著

実際の将来予測精度を考慮した舗装劣化予測モデルの精度評価手法の提案と検証(仮)

神武 直彦

土木学会(特集号)　舗装工学(予定) 2017年

研究論文（研究会，シンポジウム資料等）

Designing the International Framework for Active Debris Removal Operations

神武 直彦

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN Vol. 14(2016) 30th　International Space Technology and Science 2016年12月

研究論文（研究会，シンポジウム資料等）, 共著

リカレントニューラルネットワークモデルによる路面性状値予測の検討

神武 直彦

公益財団法人　土木学会　土木情報学委員会　2016年度土木情報学シンポジウム講演集 Vol. 41 2016年09月

研究論文（研究会，シンポジウム資料等）, 共著

Fine-Scale Mapping by Spatial Risk　Distribution Modeling for Regional Malaria Endemicity and Its Implications under the　Low-to-Moderate Transmission Setting in　Western Cambodia

神武 直彦

Okami S, Kohtake N (2016) PLoS ONE 11(7): e0158737. 2016年07月

研究論文（研究会，シンポジウム資料等）, 共著

舗装維持管理効率化のためのニューラルネットを用いた路面性状値予測の検討

神武 直彦

情報処理学会　第78回全国大会講演論文集 講演番号7C-04 2016年03月

研究論文（学術雑誌）, 共著

Application of satellite navigation system for emergency warning and alerting

神武 直彦

Computers, Environment and Urban Systems 2016年

研究論文（研究会，シンポジウム資料等）

The Design of Selective Hybrid　Positioning by Utilizing Accuracy Information for Indoor-Outdoor Seamless Positioning and Verification in Tokyo Station

神武 直彦

Indoor Positioning and Indoor Navigation (IPIN), 2015 International Conference on. IEEE, 2015. 2015年11月

研究論文（学術雑誌）, 共著

Designing the GIS predicting regional malaria endemicity in Cambodia.

神武 直彦

Proceedings of Esri Health and Human Services Conference, 2015 (Atlanta, GA) 2015年09月

研究論文（学術雑誌）, 共著

SYSTEM ENGINEERING ANALYSIS ON THE ACTIVE DEBRIS REMOVAL (ADR) ARCHITECTURE

神武 直彦

Journal of Harmonized Research in Engineering 3(1), 2015, 28-36 2015年01月

研究論文（研究会，シンポジウム資料等）, 共著

Multilateral investigation for developing a flood disaster management system in the Bago River basin

神武 直彦

Multilateral investigation for developing a flood disaster management system in the Bago River basin 2015年

研究論文（学術雑誌）, 共著

デブリ除去研究の現状

神武 直彦

宇宙科学技術連合講演会講演集 2014年11月

研究論文（研究会，シンポジウム資料等）

posal of Space Debris Indeminification Fund

神武 直彦

2014 IEEE 17th International Conference on Intelligent Transporation System (ITSC) 2014年10月

研究論文（学術雑誌）, 共著

Systems Engineering Education through Students’ CanSat Project Interacting with Young Professional Engineers

神武 直彦

Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 12, No. ists29, 2014, pp. Tt_11-Tt_17. 2014年09月

研究論文（研究会，シンポジウム資料等）, 共著

Proceedings of the 13th Participatory Design Conference on Short Papers, Industry Cases, Workshop Descriptions, Doctoral Consortium papers, and Keynote abstracts - PDC '14

神武 直彦

Serviceology 2015/01 (ICServ2014), (Yokohama, Japan) 2014年09月

研究論文（学術雑誌）, 共著

Participatory design process to solve social issues in local community

神武 直彦

Proceedings of the 13th Participatory Design Conference on Short Papers, Industry Cases, Workshop Descriptions, Doctoral Consortium papers, and Keynote abstracts - PDC '14 2014年07月

研究論文（学術雑誌）, 共著

A-19-9 視覚障がい者を対象とした非常時における屋内測位技術を利用した救援システムの提案(A-19.福祉情報工学,一般セッション)

神武 直彦

電子情報通信学会総合大会講演論文集 2014年03月

研究論文（研究会，シンポジウム資料等）, 共著

BI-7 知的環境の実現に向けたビッグデータ利活用(BI-7.知的環境の実現に向けたビッグデータ利活用,依頼シンポジウム,ソサイエティ企画)

神武 直彦

電子情報通信学会総合大会講演論文集 2014年03月

研究論文（研究会，シンポジウム資料等）, 共著

6.　 D-9-33 商業施設の価値向上のための人の属性と行動履歴を活用したスペースデザインシステムの設計と評価(D-9.ライフインテリジェンスとオフィス情報システム,一般セッション)

神武 直彦

電子情報通信学会総合大会講演論文集 2014年03月

研究論文（研究会，シンポジウム資料等）, 共著

ソーシャル・キャピタルと節電行動の相関に関するスマートフォンを用いた実証―二子玉川駅周辺地域での節電プロジェクトを中心に―

神武 直彦

デジタルプラクティス 2014年

研究論文（研究会，シンポジウム資料等）, 共著

Investigating the surrogate worth trade-off method to facilitate technology selection for new systems

神武 直彦

Topics in Safety, Risk, Reliability and Quality 2014年

研究論文（研究会，シンポジウム資料等）, 共著

Optimal policy design for disaster-hit area of Japan: Bottom-up systems analysis of special zone for reconstruction by the ISDM

神武 直彦

Topics in Safety, Risk, Reliability and Quality 2014年

研究論文（研究会，シンポジウム資料等）

測位・情報社会基盤プラットフォーム(高機能自動販売機)のグローバル展開構想

神武 直彦

宇宙科学技術連合講演会講演集/日本航空宇宙学会 2013年10月

研究論文（研究会，シンポジウム資料等）, 共著

Education of Mission Conception and SE Methodology through Simulated-Satellite Design Contest for Students

神武 直彦

No. TS-03-4, presented at Asia-Pacific Council on Systems Engineering Conference (APCOSEC) 2013, Kanagawa, Japan, Sept. 8-11, 2013. 2013年09月

研究論文（学術雑誌）

Dual-Use System Design for Air Launch System

神武 直彦

APCOSE 2013 2013年08月

研究論文（学術雑誌）

Systems Engineering Education through Students’ CanSat Project Interacting with Young Professional Engineers

神武 直彦

2013-t-04, presented at the 29th International Symposium on Space Technology and Science (ISTS), Nagoya, Aichi, Japan, June 2013. 2013年06月

研究論文（学術雑誌）, 共著

Dual-Use System Architecture for Space Systems

神武 直彦

The 29th International Symposium on Space Technology and Science, 2013-s-97-t 2013年06月

研究論文（学術雑誌）, 共著

視覚障碍者の屋内歩行支援を目的とした音声ナビゲーションシステムの提案と実証実験による検証

神武 直彦

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Societ 2013年05月

研究論文（研究会，シンポジウム資料等）

Dual Vee Modelを用いた大規模複雑システム事故の根本原因解析

神武 直彦

安全工学 = Journal of Japan Society for Safety Engineering/安全工学会 2013年04月

研究論文（研究会，シンポジウム資料等）, 共著

A-14-3 災害発生時の遠隔会議におけるファシリテータの有効性評価(A-14.ヒューマンコミュニケーション基礎)

神武 直彦

電子情報通信学会総合大会講演論文集/一般社団法人電子情報通信学会 2013年03月

研究論文（研究会，シンポジウム資料等）

Dual-Use System Architecture for a Space Situational Awareness System in Japan

神武 直彦

2013 IEEE Aerospace Conference 2013年03月

研究論文（学術雑誌）, 単著

遠隔会議での円滑なコミュニケーションに与えるファシリデータの影響の評価(『場のデザイン』及びコミュニケーション一般)

神武 直彦

電子情報通信学会技術研究報告. HCS, ヒューマンコミュニケーション基礎/一般社団法人電子情報通信学会 2013年02月

研究論文（研究会，シンポジウム資料等）

Validation of Indoor Navigation System for Visually Impaired People

神武 直彦

IEEJ Transactions on Electronics, Information and Systems/The Institute of Electrical Engineers of Japan 2013年

研究論文（学術雑誌）

System design management and Synthesiology

神武 直彦

Synthesiology English edition/National Institute of Advanced Industrial Science and Technology 2013年

研究論文（学術雑誌）, 共著

Lessons Learned in Systems Engineering Education for Students' CanSat Projects

神武 直彦

UN/Japan Nano-Satellite Symposium, Nagoya, Japan, 2012年10月

研究論文（学術雑誌）, 共著

衛星測位技術の利用と普及 : 準天頂衛星を利用したリアルタイム防災システムと屋内測位方式IMESの紹介

神武 直彦

航空と宇宙 : 日本航空宇宙工業会会報 2012年04月

研究論文（学術雑誌）, 単著

屋内外シームレス測位の実現に向けたGPS/IMES測位統合システムの設計

神武 直彦

第74回全国大会講演論文集 2012年03月

研究論文（学術雑誌）, 共著

準天頂衛星を用いた防災情報配信システムの設計と有効性検証に関する研究

神武 直彦

第74回全国大会講演論文集 2012年03月

研究論文（学術雑誌）, 共著

ラグジュアリーホテルにおけるホスピタリティ価値の研究 : システムズ・アプローチによる一考察

神武 直彦

Hospitality : 日本ホスピタリティ・マネジメント学会誌 2012年03月

研究論文（研究会，シンポジウム資料等）, 共著

IMESおよびDeadReckoning技術を用いた室内シームレス測位基盤の設計

神武 直彦

第74回全国大会講演論文集 2012年03月

研究論文（学術雑誌）, 共著

小規模ソフトウェア開発プロジェクトに対するアセスメントモデルISO/IEC29110の適用実証

神武 直彦

第74回全国大会講演論文集 2012年03月

研究論文（学術雑誌）, 共著

位置情報サービスプラットフォームおよび検証ツールの設計

神武 直彦

第74回全国大会講演論文集 2012年03月

研究論文（学術雑誌）, 共著

高品質なプロジェクトマネジメントを実現するトレーサビリティ・マトリックスの構築 : プロセス中心から情報中心のプロジェクトマネジメントへの変革に向けた基礎理論の提案

神武 直彦

Synthesiology／産業技術総合研究所 2012年02月

研究論文（研究会，シンポジウム資料等）

Construction of a traceability matrix for high quality project management

神武 直彦

Synthesiology/National Institute of Advanced Industrial Science and Technology 2012年

研究論文（研究会，シンポジウム資料等）, 共著

Construction of a traceability matrix for high quality project management

神武 直彦

Synthesiology English edition （National Institute of Advanced Industrial Science and Technology）  2012年

Construction of a traceability matrix for high quality project management

神武 直彦

Synthesiology （National Institute of Advanced Industrial Science and Technology）  2012年

研究論文（学術雑誌）, 共著

IMCM : 各階平面図を利用した屋内地図データ簡易作成手法　　　　　　　　　　 (特集論文 アウトドア・コンピューティング)

神武 直彦

ヒューマンインタフェース学会論文誌 The transactions of Human Interface Society 2012年

研究論文（研究会，シンポジウム資料等）

VSEセンター:小規模組織におけるシステム開発のプロセス改善

神武 直彦

SEC journal （INFORMATION-TECHNOLOGY PROMOTION AGENCY,JAPAN）  2011年

研究論文（学術雑誌）, 共著

Strategic Framework of Open Source Intelligence for Competitive Analysis

神武 直彦

INTELLIGENCE MANAGEMENT （The Japan Society of Competitive Intelligence）  2011年

研究論文（学術雑誌）, 共著

Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services

神武 直彦

Geo-Spatial Information Science 2011年

研究論文（学術雑誌）, 共著

Cansat開発におけるシステムズ・エンジニアリングの実践～全国7大学におけるPBL型教育プログラムの実践～

山田皓司，須藤雄哉，土岐周平，梯友哉，坂本啓，神武 直彦，白坂成功

第54回宇宙科学連合講演会 No.3E06 2010年11月

研究論文（研究会，シンポジウム資料等）, 共著

LBS Manager: A Framework for Providing and Analyzing Location-Based Services

神武 直彦

Internet of Things 2010 Conference 2010年11月

研究論文（研究会，シンポジウム資料等）, 共著

Cansat開発におけるシステムズ・エンジニアリングの適用～PBL型教育プログラムの構築～

神武 直彦，坂本啓，白坂成功，山田皓司，須藤雄哉，土岐周平，梯友哉

第54回宇宙科学連合講演会 No.3E05 2010年11月

研究論文（研究会，シンポジウム資料等）, 共著

Scenario-based Amorphous Design Framework for a Location-based Services Technology

神武 直彦

Workshop on Tool-Support for Mobile and Pervasive Application Development, 12th Internatoinal Conference on Human-Computer Interaction with Mobile Devices and Services (Mobile HCI 2010) 2010年09月

研究論文（研究会，シンポジウム資料等）, 共著

Graduate Program in Multi-Disciplinary System Design and Management

神武 直彦

20th INCOSE International Symposium 2010年07月

研究論文（研究会，シンポジウム資料等）, 共著

Flexible Technical System Design for Indoor and Outdoor Seamless Positioning System with GPS Technology

神武 直彦

10th Global Conference on Flexible Systems Management 2010年07月

研究論文（研究会，シンポジウム資料等）, 共著

Flexible Business System Design for Indoor and Outdoor Seamless Positioning System with GPS Technology

神武 直彦

10th Global Conference on Flexible Systems Management 2010年07月

研究論文（研究会，シンポジウム資料等）, 共著

“Flexible Action Management on Realtime Disaster Response”,

神武 直彦

10th Global Conference on Flexible Systems Management 2010年07月

研究論文（研究会，シンポジウム資料等）, 共著

Educational Curriculum for Multi-Disciplinary System Design and Management

神武 直彦

54th Annual Meeting of the International Society for the Systems Society 2010年07月

研究論文（研究会，シンポジウム資料等）, 共著

リアルタイム防災における3D空間情報活用

楠田哲也，神武 直彦，小木哲朗

第12回テレイマージョン技術研究会，日本バーチャルリアリティ学会研究報告 Vol.15 （ No.CS-2 ） pp.77-86 2010年06月

研究論文（研究会，シンポジウム資料等）, 共著

学問分野を超えた「システムデザイン・マネジメント学」の大学院教育

神武 直彦前野隆司，西村秀和，狼嘉彰，

構成学論文誌 Vo.3 （ No.2 ）  2010年05月

研究論文（研究会，シンポジウム資料等）, 共著

Transforming Seamless Positioning Technology into a Business using a Systems Design Approach—Scenario-based Amorphous Design

神武 直彦

IEEE-International Systems Conference 2010年04月

研究論文（研究会，シンポジウム資料等）, 共著

Chameleon Phone：屋内外での位置情 報や環境情報に応じて機能を変化させるGPS携帯システム

小川晃平，牧野泰才，湊宣明，神武 直彦

情報処理学会インタラクション2010 2010年03月

研究論文（研究会，シンポジウム資料等）, 共著

衛星測位地上補完システムIMESについて

石井真，小暮聡，神武 直彦

測位航法学会GPS/GNSSシンポジウム2009 2009年12月

研究論文（研究会，シンポジウム資料等）, 共著

不具合履歴に基づくソフトウェアIV&V 活動の定量的見える化手法

神武 直彦柗本真佑，上野秀剛，門田暁人，松本健一，片平真史，宮本祐子，氏原頌悟，吉川茂雄

電子情報通信学会論文誌 （電子情報通信学会）  Vol.J92-D 2009年12月

研究論文（研究会，シンポジウム資料等）, 共著

モデル検査を用いて組込みシステムにおけるソフトウェアとハードウェアの協調動作に関する要求仕様の不整合を検出する手法

加藤淳，神武 直彦，春山真一郎，狼嘉彰

情報処理学会 組込みシステムシンポジウム2009 2009年10月

研究論文（研究会，シンポジウム資料等）, 共著

Viewpoint-based Test Analysis For On-board Dependable Flight Software

神武 直彦

3rd IEEE International Conference On Space Mission Challenges For Information Technology    pp 77-82 2009年07月

研究論文（研究会，シンポジウム資料等）, 共著

Model-base Independent Verification and Validation for Dependable Flight Software

神武 直彦

IEEE Aerospace Conference 2009年

研究論文（研究会，シンポジウム資料等）, 共著

宇宙機搭載ソフトウェアの高信頼化を目的とした第三者評価活動の成果と今後の課題

氏原頌悟，神武 直彦，片平真史

日本ソフトウェア科学会 第5回システム検証の科学技術シンポジウム(SSV 2008) 2008年11月

研究論文（研究会，シンポジウム資料等）, 共著

Cost Effective Iv&V Planning Activity Derived from Experiences on Jaxa's Spacecraft Projects

神武 直彦

ESA Workshop on Avionics Data, Control and Software Systems (ADCSS) 2008年10月

研究論文（研究会，シンポジウム資料等）, 共著

Software Independent Verification and Validation for Spacecraft at JAXA

神武 直彦

IEEE Aerospace Conference 2008年03月

研究論文（研究会，シンポジウム資料等）, 共著

System-level Design Approach for Spacecraft On-board Digital Equipments

神武 直彦

Asia-Pacific Conference on Systems Engineering (APCOSE2008) 2008年

研究論文（研究会，シンポジウム資料等）, 単著

宇宙機ソフトウェアに対するＩＶ＆Ｖとその適用事例

加藤淳，神武 直彦，片平真史

情報処理学会 組込みシステムシンポジウム2007 2007年10月

研究論文（研究会，シンポジウム資料等）, 共著

Self-organizable panel for assembling DIY ubiquitous computing

神武 直彦

Personal and Ubiquitous Computing Journal, Springer-Verlag London Volume 11 （ Issue 7 ） pp 591-606 2007年10月

研究論文（研究会，シンポジウム資料等）, 共著

宇宙機クリティカルソフトウェア開発・検証技術

神武 直彦，片平真史

日本計算工学会講演会 2007年05月

研究論文（研究会，シンポジウム資料等）, 共著

• 加藤淳，星野伸行，片平真史，石濱直樹，宮本祐子，神武直彦，“クリティカルソフトウェアに対するIV&V：Independent Verification and Validation

神武 直彦

情報処理学会 ソフトウェア工学研究会，IPSJ SIG Notes 2007(33)    pp.81-87 2007年03月

研究論文（研究会，シンポジウム資料等）, 共著

ユビキタス環境構築のためのブロック型情報機器連携技法

神武 直彦，大澤亮，米澤拓郎，高汐一紀，徳田英幸

情報処理学会論文誌 （情報処理学会）  Vol.48 （ No.3 ） 1405-1416 2007年03月

研究論文（研究会，シンポジウム資料等）, 共著

顔の移動軌跡に基づくサービス制御機構

駒木亮伯，岩井将行，神武 直彦，高汐一紀，徳田英幸

情報処理学会 ユビキタスコンピューティングシステム研究会，2006(14)    pp.103-108 2006年02月

研究論文（研究会，シンポジウム資料等）, 共著

Face-Connect:顔の動きに基づいたサービス推薦・選択手法

駒木亮伯，岩井 将行，神武 直彦，高汐 一紀，徳田 英幸

日本ソフトウェア科学会 インタラクティブシステムとソフトウェアに関するワークショップ(WISS2005 2005年12月

研究論文（研究会，シンポジウム資料等）, 共著