Welcome to the fifteenth Jubilee International Symposium on Autonomous Decentralized Systems (ISADS).As Lifetime Honorary Chair, I would like to thank you for coming to ISADS 2023. ISADS was founded in 1993 atKawasaki, Japan.Since then, ISADSs have been held world-wide every two years except in 2021 due to pandemic.They were successful in their high quality and broad international participation from academia, government and industry.At the first ISADS, the concept of autonomous decentralized systems (ADS) was well recognized.During the last 30 years, fields of ADS have been substantially advanced to provide solutions for control, communication, computing, service systems and further to organization and finance management, such as FinTech along with rapid development of other related technologies and management.ISADS 2023 reflects not only such maturity but also innovation in ADS concept, technology and application as well as further integration with other heterogeneous fields.Now, structures of Society, Value, Business and Technology have been unpredictably and rapidly transformed under climate change, pandemic and economic turmoil.ADS, which behaves as a living system comprised of largely autonomous and decentralized subsystems, has been successfully contributing to fulfill adaptive, reliable and expandable properties under changing and transforming environment as consistent concept.The continuous growth of ISADS in size and diversity is reflected by the sponsoring society, the Computer Society of the Institute of Electrical and Electric Engineers (IEEE) together with the cooperating societies including the International Federation for Information Processing (IFIP), the International Federation of Automatic Control (IFAC), the Institute of Electronics, Information and Communication Engineers (IEICE), Japan and Object Management Group (OMG), as well as the strong supporting organization of Universidad Panamericana, Mexico.I hope that you will find the program stimulating and that you will take the opportunity to meet with your colleagues from around the world to engage in social as well as technical discussions.In addition, technical sessions and workshops on the hot topics of technologies and their advanced applications are jointly arranged.The success of the symposium depends on the dedication and contributions of many volunteers, committee members, authors, reviewers, speakers, workshop chairs, session chairs and supporting personnel, and the strong organizations.I would like to thank Honorary Chairs, Bojan Cukic and General Chair, Carlos Perez for their direction.

Recently, due to the deceleration of the markets in developed economies, the growing demand for infrastructure development in emerging countries has become more important in the global economy. Conventionally, developed countries have improved their infrastructure from government's and supplier's viewpoints. However, this approach has not always been the best when working in emerging countries. In this study, we propose an innovative approach inspired by the concept of social innovation, centered around the social viewpoint. It consists of a system for the successful implementation and sustainable development of new infrastructure projects in emerging countries. We focus on an ongoing railway project in Vietnam by looking at the applicability of this concept there. Finally, the concept is evaluated through rounds of discussion with experts from the government, academia and industry. It was concluded that the project is perceived to have great potential for the region, and it is regarded with high esteem by all stakeholders.

In the control of operation of the machinery and equipment of vehicles human error by operator makes accidents and disasters. In information technology system, there are also some accidents to system failure and data lost by the human error by operator. It is one of big issue for assurance system. To avoid human error by operator, emotion sense evaluation by Ontology rule is proposed. We configure this approach on Autonomous Decentralized Multi-Layered Cache system (ADMLC). We selected Galvanic Skin Response (GSR) value as the factor of human emotion for each operator. We try to sense operator unstable emotion by GSR value then request other operator to check whether his command order is true or not. We evaluated GSR value of nine operators by a week. Each operator has different GSR value and it is depending on person and environment. The analyzing method, Ontology rule is utilized in this proposal. Its rule engine always records the GSR value for ontology rule engine. The dynamic value of GSR shows operator's emotion in real time. Ontology rule engine decision makes the result of GSR value using the historical data. The result of emotion sense accuracy shows more than 90 % by evaluation. By the Ontology emotion sense rule engine on ADMLC system, it shows as one of possibility of method to avoid the system failure or data lost by the human error.

Web services and cloud computing paradigms have opened up many new vistas. The data intensive cloud applications usually require huge amounts of data to input and output from secondary storage systems. The outstanding progress in area of network communications has enabled high speed networks and therefore, communication latency bottleneck in cloud and other web applications has been shifted to node/storage level. Moreover, existing cloud solutions focused mainly on the efficient utilization of computing resources through virtualization and issues of storage bottleneck did not receive much attention. Moreover, virtualization based implementation ensures equal priority to all hosted applications, thus, real time applications in cloud environment can't meet their requirements. To meet the demand of overall low latency in cloud and other web services; and particularly to reduce I/O bottleneck at storage level, novel idea of autonomous L3 cache technology is proposed. Autonomous L3 cache technology utilizes local memory space as dedicated block device cache for certain specific application, thus prioritizing it over rest of hosted ones. Evaluation shows performance improvement of 5-8 times in terms of timeliness in given setup.

Most of the indoor wireless sensor networks need timely information from sensors during normal and specially emergency situation. Generally a sensor network is designed with sufficient capacity to meet the requirement in normal situation. The design consideration also includes the emergency situation to support up to certain level of emergency. But the emergency situation is unpredictable and difficult to predict the level of the emergency. On the other hand in emergency situation timely information is more important for the system. Moreover extra messages are necessary to transmit from sink node to emergency areas during the emergency situation to control the emergency fault. This article discusses about the timely message transmission in an indoor wireless sensor networks during normal operation and emergency situation. In this paper we adopt a Heterogeneous Sensor Network (HSN) model for the system. We propose a new technology to achieve the timeliness in message transmission in the network. The propose technology uses local coordination to switch connected sensors to control the congestion of the network for timeliness. The simulation results show that the proposed technology effectively solves the timeliness problem.

Under dynamic and heterogenous environment, the need for adaptability and rapid response time to information service systems has become increasingly important. To cope with the continuously changing conditions of service provision and utilization, faded information field (FIF) has been proposed. In the case of a mono-service request, the system is designed to improve users' access time and preserve load balancing through the information structure. However, with interdependent requests of multi-service increasing, adaptability, reliability and timeliness have to be assured by the system. In this paper, the relationship between the timeliness and the reliability of correlated services allocation and access is clarified. Based on these factors, the autonomous network-based information services integration technology to provide one-stop service for users' multi-service requests is proposed. We proved the effectiveness of the proposed technology through the simulation and the results show that the integrated service can reduce the total users access time compared with the conventional systems.

Emerging rich interactive Web services require timeliness and high availability. These applications are usually characterized as high I/O intensive service model such as ecommerce services, medical sciences including healthcare and digital imaging. [1,3]. These applications require continuous operation, non-stop service system and timeliness to achieve high assurance to meet Service Level Agreement (SLA). SLA is the explicit requirement of the Quality of Service (QoS), such as reliability and timeliness. SLA requirement in the emerging applications on the Internet needs Autonomous Decentralized System (ADS) [8] characteristics [2,4].

Recently, the amount of construction about railway signalling system is steadily increasing to improve the transport services for the customer. But at present, efficiency of signal construction is very low. Because the period for the construction is limited to very short time at mid-night, flexibility of the signalling system is low from its system architecture and so on. To solve these problems, we are now grappling with the innovation of the railway signalling system. In this paper, safety-related autonomous decentralised technology is proposed. And as its practical application, the network signalling system is described.

Wireless Sensor Network(WSN) is widely used in Emergency Management System(EMS) to assure high safety. Real-timely transmitting emergency information in dynamically changing environment should be assured in mission critical district. Conventional methods based on static situations and centralized approaches can not satisfy this requirement. In this paper, to assure real-time property, autonomous community construction technology is proposed to set special area called community which includes a special passage composed of several routers for emergency information's transmission and routers around this passage in one hop range. Emergency information's transmission is protected by routers around this passage from interference of other sensing information's transmission in and outside community. Moreover, autonomous community reconstruction technology is proposed to guarantee real-time property at failure conditions. In this technology, community members autonomously cooperate and coordinate with each other to setup a bypass in community for transmitting emergency information if fault happens. Evaluation results indicate effectiveness of proposed technology.

Community Context-attribute-centric Collaborative Information Environment (CCCIE) enables provision of services to users with same interests, by employing time awareness and demand-oriented perspective to transform one to one (1-1), one dimensional location based service paradigm to one to many (1-N), n-dimensional situation-aware community services. Unlike conventional Location Based Services (LBS) which involve selection of most suitable service either by manipulating location context at centralized server, or context-aware selection among all discovered services at service-consumer logic (at end node), the circumspect design of Autonomous Decentralized Community System (ADCS)framework empowers the transparent access of right service to right users at right place and right time, in highly dynamic ubiquitous environment by collaborative decentralized processing of various surrounding contexts like traffic and weather conditions, topographic features of towns and service validity time etc.

Wireless sensor networks represent relatively new data collection paradigm that is used for most of the indoor and outdoor data collecting environments. In an indoor factory monitoring environment production lines modification or expansion are necessary over time based on user and system requirements. For any kinds of modification in the production lines sensors addition and/or relocation are necessary. These sensors addition and/or relocation sometime increase the sensor density in some areas of the network. The high density areas of the network suffer congestion and affect the online expansion of the network. As a result, in a dynamic changing environment the online expansion is a challenging problem for the network. This paper proposes an architecture for an indoor factory environment and a technology which is called as coordination technology to achieve online expansion of the network. We show with simulation that the proposed architecture and the technology can effectively achieve the online expansion for an indoor factory system.

In Video-on-Demand (VoD) services, the playback continuity is one of the most crucial factors for end-user to judge service quality. It is even more significant than the actual video image quality since new generation VoD users commonly have heterogeneous requirements on service according to their context. Moreover, managing dynamic situations in VoD service is always a challenge, especially in the unpredictable user preferences and network conditions. In this paper, i) Autonomous Decentralized VoD System (ADVODS) has been proposed to satisfy different service quality demands of users and, ii) the Autonomous Node Allocation Technology (ANAT) is proposed for assuring service continuity. With the help of autonomous nodes and mobile agents, ANAT can applies different backup policies to users with different Service Level Agreements (SLA), and dynamically update the backup schema to adapt the changing situations such as various service time or congestion events. Drawing on the evaluation results this paper shows that proposed system architecture has a better performance on streaming service provision and continuity.

The challenge in resource utilization under dynamic environment is how to utilize appropriate resources to the right users at the right time and the right location. In conventional system, centralized management system is applied but it tends to congest when user requests increase or resources rapidly move. Therefore, this paper proposes Autonomous Coordination Technology (ACT) through community organization for resource utilization. In ACT, a node which has surplus resources autonomously constructs community with a surplus-level based size and distributes resources to members which are deficient in resources. ACT consists of autonomous coordination within community and among communities. According to community organization, online property and flexibility can be satisfied. However, it is difficult to achieve service provision timeliness and resource allocation operatability in the mean time. Thus, ACT includes successive transportation method, and autonomous resource allocation which dynamic decision is made by a tradeoff between timeliness and operatability. As a result, the service assurance in terms of timeliness and operatability can be assured. The effectiveness of proposed technology is affirmed through the simulation of taxi dispatching application in terms of response time and standard deviation versus user rates.

In most of the indoor factory monitoring system sensor relocations and reorganizations are necessary with reorganization of production lines and/or starting of new production lines. These relocations and/or additions sometime make congestion in some area of the network and difficult to achieve online expansion. As a result, in the dynamic changing environment the online expansion is a challenging problem for the indoor factory sensor network. A two-tier autonomous decentralized architecture has been proposed for the environment. The first layer consists of sensors and the second layer consists of routers. In the architecture routers make community (a group of nodes mutually cooperate for a common goal is a community) that shares information to achieve a specific goal. A resource deficit router makes a community which we call as request based community to utilize some resources of resource available routers. To utilize the resources the community members share information. After sharing information a resource deficit router switches load to resource available router by connecting and disconnecting sensors. The goal of this paper is to introduce the request based community construction technology in wireless sensor network that shares information by the routers of the community to achieve high expandability. We show the effectiveness of our proposed technology using simulation.

In the dynamic and heterogeneous environment, the quality of user experiences (QoE) is considered to be a more appropriate parameter for judging the video on demand (VoD) service quality compared to quality of service (QoS) since users have different requirements on service quality according to their places, time and devices. To achieve QoE, service providers are expected to offer a new system architecture which can satisfy different levels of demands. In addition, for users the service continuity becomes one of the most serious effect factors. However, it is difficult for conventional systems to meet heterogeneous requirements from service providers and users simultaneously. This paper introduces an autonomous demand-oriented streaming system sustained by mobile agents for information service provision and utilisation. Under the proposed architecture, autonomous fault detection and recovery technologies are proposed to assure service continuity. The effectiveness of the proposed technology is proved by the simulation.

Wireless sensor networks represent a new data collection paradigm in which expandability plays an important role. In a practical monitoring environment, for example, food factory monitoring system, sensor relocations and reorganizations are necessary with reorganization of production lines and starting of new production lines. These relocations sometime make congestion in some area of the network. In this dynamic changing environment online expansion is a challenging problem for resource constraint network. This paper proposes a two-tier autonomous decentralized community architecture for wireless sensor network to solve the problem. The first layer consists of sensors and second layer consists of routers. In the architecture routers make community (a group of nodes mutually cooperate for a common goal is a community). The goal of this paper is to introduce the concept of sharing information among routers of the community to decrease sensor connection time for the network especially for the dynamic changing environment. Results show that our proposed technologies can reduce sensor connection time to achieve online expansion.