Journal articles: 'Orchestrator'

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Ciancia, Vincenzo, Jose Martin, Fabio Martinelli, Ilaria Matteucci, Marinella Petrocchi, and Ernesto Pimentel. "Automated Synthesis and Ranking of Secure BPMN Orchestrators." International Journal of Secure Software Engineering 5, no. 2 (April 2014): 44–64. http://dx.doi.org/10.4018/ijsse.2014040103.

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The authors describe a formal methodology for the automatic synthesis of a secure orchestrator for a set of BPMN processes. The synthesized orchestrator is able to guarantee that all the processes that are started reach their end, and the resulting orchestrator process is secure, that is, it does not allow the disclosure of certain secret messages. The authors present an implementation of a forth and back translation from BPMN to Crypto-CCS, that permits them to exploit the previously existing PaMoChSA tool to synthesize BPMN orchestrators. Furthermore, they study the problem of ranking orchestrators based on quantitative valuations of a process, the temporal evolution of such valuations, and their security, as a function of the knowledge of the attacker.

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Direito, Rafael, Daniel Gomes, João Alegria, Daniel Corujo, and Diogo Gomes. "NetOr: A Microservice Oriented Inter-Domain Vertical Service Orchestrator for 5G Networks." Journal of Internet Services and Applications 14, no. 1 (September 12, 2023): 136–50. http://dx.doi.org/10.5753/jisa.2023.3207.

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Most modern 5G Vertical Service Orchestrators present various limitations. Among these, one may high-light (i) the employment of monolithic architectures, (ii) the lack of standardized APIs and methodologies, (iii) the minimum support for inter-domain scenarios, and (iv) the impossibility of performing run-time operations over Vertical Services. To achieve a fully-fledged Vertical Service Orchestrator, these problems must be solved. This is the focus of the work presented in this article. Our work presents a new 5G Vertical Service orchestration system named NetOr, which tackles all the listed limitations and can support complex and intricate use cases. NetOr was implemented according to a microservice architecture. Thus, it has increased flexibility, scalability, and maintainability. Moreover, NetOr inherited most advantages of the modern Vertical Service Orchestrators and, therefore, can be considered an improvement of said orchestrators. Furthermore, this work also presents a Proof-of-Concept solution to achieve inter-domain communication through the orchestration of an End-To-End Network Slice that establishes several VPN tunnels between the domains encompassed by the Network Slice.

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Eramo, Vincenzo, Francesco Lavacca, Tiziana Catena, Marco Polverini, and Antonio Cianfrani. "Effectiveness of Segment Routing Technology in Reducing the Bandwidth and Cloud Resources Provisioning Times in Network Function Virtualization Architectures." Future Internet 11, no. 3 (March 12, 2019): 71. http://dx.doi.org/10.3390/fi11030071.

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Network Function Virtualization is a new technology allowing for a elastic cloud and bandwidth resource allocation. The technology requires an orchestrator whose role is the service and resource orchestration. It receives service requests, each one characterized by a Service Function Chain, which is a set of service functions to be executed according to a given order. It implements an algorithm for deciding where both to allocate the cloud and bandwidth resources and to route the SFCs. In a traditional orchestration algorithm, the orchestrator has a detailed knowledge of the cloud and network infrastructures and that can lead to high computational complexity of the SFC Routing and Cloud and Bandwidth resource Allocation (SRCBA) algorithm. In this paper, we propose and evaluate the effectiveness of a scalable orchestration architecture inherited by the one proposed within the European Telecommunications Standards Institute (ETSI) and based on the functional separation of an NFV orchestrator in Resource Orchestrator (RO) and Network Service Orchestrator (NSO). Each cloud domain is equipped with an RO whose task is to provide a simple and abstract representation of the cloud infrastructure. These representations are notified of the NSO that can apply a simplified and less complex SRCBA algorithm. In addition, we show how the segment routing technology can help to simplify the SFC routing by means of an effective addressing of the service functions. The scalable orchestration solution has been investigated and compared to the one of a traditional orchestrator in some network scenarios and varying the number of cloud domains. We have verified that the execution time of the SRCBA algorithm can be drastically reduced without degrading the performance in terms of cloud and bandwidth resource costs.

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Tembhurne, Omprakash, Sonali Milmile, Ganesh R. Pathak, Atul O. Thakare, and Abhijeet Thakare. "An Orchestrator." International Journal of Open Source Software and Processes 13, no. 1 (January 1, 2022): 1–17. http://dx.doi.org/10.4018/ijossp.308792.

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A development of an orchestrator that manages multiusers and shared resources is extremely useful for automaton of jobs on the multiple machines. Many companies such as UiPath, Blue Prism, Automation Anywhere, etc. have their own orchestrator, but their orchestration services have some drawbacks (i.e., huge cost of yearly subscription, lack of user defined flexibility in architecture, and third-party security issues). The manuscript contains the design and analysis of orchestrator using open-source programming language and cloud platform (i.e., Python and OpenStack). The main focus of this paper is design and development of the orchestrator with shared resources and distribute environment management system that help to manage the multiuser, multi-machine environment in an efficient way. The overall examination delights that design and development of inhouse orchestrator application using open-source assets is not only useful in terms of colossal expense slicing, but also the development of free and flexible robotic process automation applications.

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Sim, Dong-Hi, Jongyoon Shin, and Min Hyung Kim. "Software-Defined Networking Orchestration for Interoperable Key Management of Quantum Key Distribution Networks." Entropy 25, no. 6 (June 15, 2023): 943. http://dx.doi.org/10.3390/e25060943.

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This paper demonstrates the use of software-defined networking (SDN) orchestration to integrate regionally separated networks in which different network parts use incompatible key management systems (KMSs) managed by different SDN controllers to ensure end-to-end QKD service provisioning to deliver the QKD keys between geographically different QKD networks. The study focuses on scenarios in which different parts of the network are managed separately by different SDN controllers, requiring an SDN orchestrator to coordinate and manage these controllers. In practical network deployments, operators often utilize multiple vendors for their network equipment. This practice also enables the expansion of the QKD network’s coverage by interconnecting various QKD networks equipped with devices from different vendors. However, as coordinating different parts of the QKD network is a complex task, this paper proposes the implementation of an SDN orchestrator which acts as a central entity to manage multiple SDN controllers, ensuring end-to-end QKD service provisioning to address this challenge. For instance, when there are multiple border nodes to interconnect different networks, the SDN orchestrator calculates the path in advance for the end-to-end delivery of keys between initiating and target applications belonging to different networks. This path selection requires the SDN orchestrator to gather information from each SDN controller managing the respective parts of the QKD network. This work shows the practical implementation of SDN orchestration for interoperable KMS in commercial QKD networks in South Korea. By employing an SDN orchestrator, it becomes possible to coordinate multiple SDN controllers and ensure the efficient and secure delivery of QKD keys between different QKD networks with varying vendor equipment.

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Spataru, Adrian. "Decentralized and Fault Tolerant Cloud Service Orchestration." Scalable Computing: Practice and Experience 21, no. 4 (December 20, 2020): 709–25. http://dx.doi.org/10.12694/scpe.v21i4.1838.

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This paper proposes a decentralized framework for the orchestration of Cloud Services using heterogeneous resources residing in the homes of private individuals or small-scale clusters. The framework makes use of Ethereum Smart Contracts to provide a decentralized mechanism for discovering the different interfaces exposed by Cloud Components. The paper introduces a novel concept of Component Administration Networks, which are peer-to-peer networks that monitor and ensure the availability of the software components. The concept applied for the Orchestration process to ensure that the deployment of an Application continues in the presence of Orchestrator component failure. Checkpoints are used to address the continuity of the Management components, in general, and of the Orchestrator, in particular. In our proposal, checkpoint metadata is stored in a Smart Contract to assess the execution time of a Service to reimburse the participants that ensure its execution.

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Mr. K. Ravi Kumar, Yarlagadda Ravitreyini Chowdary, Madharam Naresh, Srimanthula Shivachary, and Swarna Neeraj. "Project Orchestrator." international journal of engineering technology and management sciences 8, no. 3 (2024): 175–81. http://dx.doi.org/10.46647/ijetms.2024.v08i03.021.

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The ever-increasing growth and complexity of software-intensive systems over the past 20 years and the ensuing rise in geographically distributed projects are trends that are here to stay. Solving the distributed project management problem by automating it is a top priority, one that relies not simply on the intelligent application of technology, but also on coordinated, complementary efforts focused on people and processes. These systems must evolve to support increased decision velocity and cohesiveness in today’s increasingly distributed world. The unique features of a software product line organization challenge the conventional definition of project management. Among those features are different project types, each of which adds value in a different way. A Project Management Office System (PMOS) is designed to help project office personnel manage project and resource information. The system, built using Oracle Application Express (APEX) and hosted on Oracle Cloud, shall allow input of new project and new resource details, and manipulation of project/resource information. It will facilitate the allocation of resources to projects and the transfer of resources across projects. The system will also manage training requirements, training schedules, and training closure functions.

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Abbott, Kenneth W., Philipp Genschel, Duncan Snidal, and Bernhard Zangl. "Two Logics of Indirect Governance: Delegation and Orchestration." British Journal of Political Science 46, no. 4 (July 21, 2015): 719–29. http://dx.doi.org/10.1017/s0007123414000593.

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This article introduces the concept of orchestration as the mobilization of an intermediary by an orchestrator on a voluntary basis in pursuit of a joint governance goal. Orchestrator-Intermediary theory then provides a model of indirect governance that supplements delegation models premised on principal-agent theory. Under both theories, governors enhance their governance capacity by drawing on the capabilities of third parties. Whereas delegation is premised on hard ‘contractual’ control over the agent, however, orchestration relies on the soft control of like-minded intermediaries through material and ideational support. The two models overlap, and governors mix them in practice, but distinguishing between them analytically can broaden and deepen analysis of indirect forms of governance. This article discusses the circumstances under which each model provides a better fit for real-world problems, as well as the key limitations of each model. Among other things, orchestration is relatively more likely in democratic than authoritarian systems, when governors have limited direct capacities of their own and when veto players are more numerous. Orchestration is not always more desirable than delegation, but it provides an important alternative in some circumstances. Multiple examples from both domestic and international settings are used to illustrate this claim. The article closes with key considerations regarding the effectiveness and legitimacy of orchestration.

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Pisarić, Milan, Vladimir Dimitrieski, Marko Vještica, Goran Krajoski, and Mirna Kapetina. "Towards a Flexible Smart Factory with a Dynamic Resource Orchestration." Applied Sciences 11, no. 17 (August 28, 2021): 7956. http://dx.doi.org/10.3390/app11177956.

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Amid the current industrial revolution, a total disruption of the existing production lines may seem to be the easiest approach, as the potential possibilities seem limitless when starting from the ground up. On the business side, an adaptation of existing production lines is always a preferred option. In support of adaptation as opposed to disruption, this paper presents a new approach of using production process orchestration in a smart factory, discussed in an industrial case-study example. A proposed smart factory has the Orchestrator component in its core, responsible for complete semantical orchestration of production processes on one hand, and various factory resources on the other hand, in order to produce the desired product. The Orchestrator is a complex, modular, highly scalable, and pluggable software product responsible for automatised planning, scheduling, and execution of the complete production process. According to their offered capabilities, non-smart and smart resources—machines, robots, humans—are simultaneously and dynamically assigned to execute their dedicated production steps.

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Lingens, Bernhard, Maximilian Böger, and Oliver Gassmann. "Even a Small Conductor Can Lead a Large Orchestra: How Startups Orchestrate Ecosystems." California Management Review 63, no. 3 (April 9, 2021): 118–43. http://dx.doi.org/10.1177/00081256211005497.

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Contrary to existing literature, startups can be successful orchestrators of ecosystems. Based on nine qualitative case studies, this article introduces four archetypes that shed light on how a startup can fulfill the tasks of an orchestrator and overcome challenges. The findings identify dimensions of standardization/customization and sources of value creation as defining the role of ecosystem orchestrators and demonstrate the consequences for small and medium-sized enterprises (SMEs), corporates, investors, and accelerators involved in such ecosystems.

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Amarjeet Singh, Et al. "Microservices Container Security Orchestration Framework within Kubernetes and Docker for Business-Critical Applications within Digital Transformation." International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 3 (March 31, 2023): 332–36. http://dx.doi.org/10.17762/ijritcc.v11i3.9863.

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Container virtualization technology facilitates the creation of microservices-based systems through continuous integration. Container-based apps can be deployed more easily when they use orchestration systems like Kubernetes, which has become the de facto standard. It can be difficult to create effective and precise orchestration systems, nevertheless. The scheduler, a crucial orchestrator task that allocates physical resources to containers, is the subject of this article. Scheduling strategies are developed using several Quality-of-Service metrics. The CI in CI/CD stands for continuous integration. Continuous integration drives the automation in the development and delivery of the code and developers frequently apply code changes. It’s an automated process that allows multiple developers to contribute software components to the same project without integration conflicts. CI also triggers the process of testing the applications automatically upon code commit into the repository. Container virtualization technology facilitates the creation of microservices-based systems through continuous integration. Container-based apps can be deployed more easily when they use orchestration systems like Kubernetes, which has become the de facto standard. It can be difficult to create effective and precise orchestration systems, nevertheless. The scheduler, a crucial orchestrator task that allocates physical resources to containers, is the subject of this article. Scheduling strategies are developed using several Quality of Service metrics.

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Haas, Hanns-Stephan. "Sozialpolitik: Orchestrator gesucht." Sozialwirtschaft 24, no. 1 (2014): 26–27. http://dx.doi.org/10.5771/1613-0707-2014-1-26.

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Dessaigne, Elsa, and Catherine Pardo. "The network orchestrator as steward: Strengthening norms as an orchestration practice." Industrial Marketing Management 91 (November 2020): 223–33. http://dx.doi.org/10.1016/j.indmarman.2020.09.007.

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Liutkevičius, Agnius, Nerijus Morkevičius, Algimantas Venčkauskas, and Jevgenijus Toldinas. "Distributed Agent-Based Orchestrator Model for Fog Computing." Sensors 22, no. 15 (August 7, 2022): 5894. http://dx.doi.org/10.3390/s22155894.

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Fog computing is an extension of cloud computing that provides computing services closer to user end-devices at the network edge. One of the challenging topics in fog networks is the placement of tasks on fog nodes to obtain the best performance and resource usage. The process of mapping tasks for resource-constrained devices is known as the service or fog application placement problem (SPP, FAPP). The highly dynamic fog infrastructures with mobile user end-devices and constantly changing fog nodes resources (e.g., battery life, security level) require distributed/decentralized service placement (orchestration) algorithms to ensure better resilience, scalability, and optimal real-time performance. However, recently proposed service placement algorithms rarely support user end-device mobility, constantly changing the resource availability of fog nodes and the ability to recover from fog node failures at the same time. In this article, we propose a distributed agent-based orchestrator model capable of flexible service provisioning in a dynamic fog computing environment by considering the constraints on the central processing unit (CPU), memory, battery level, and security level of fog nodes. Distributing the decision-making to multiple orchestrator fog nodes instead of relying on the mapping of a single central entity helps to spread the load and increase scalability and, most importantly, resilience. The prototype system based on the proposed orchestrator model was implemented and tested with real hardware. The results show that the proposed model is efficient in terms of response latency and computational overhead, which are minimal compared to the placement algorithm itself. The research confirms that the proposed orchestrator approach is suitable for various fog network applications when scalability, mobility, and fault tolerance must be guaranteed.

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Elloumi Zitouna, Imene. "Learning-based Orchestrator for Intelligent Software-defined Networking Controllers." International Journal of Software Engineering & Applications 11, no. 6 (November 30, 2020): 17–30. http://dx.doi.org/10.5121/ijsea.2020.11602.

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This paper presents an overview of our learning-based orchestrator for intelligent Open vSwitch that we present this using Machine Learning in Software-Defined Networking technology. The first task consists of extracting relevant information from the Data flow generated from a SDN and using them to learn, to predict and to accurately identify the optimal destination OVS using Reinforcement Learning and QLearning Algorithm. The second task consists to select this using our hybrid orchestrator the optimal Intelligent SDN controllers with Supervised Learning. Therefore, we propose as a solution using Intelligent Software-Defined Networking controllers (SDN) frameworks, OpenFlow deployments and a new intelligent hybrid Orchestration for multi SDN controllers. After that, we feeded these feature to a Convolutional Neural Network model to separate the classes that we’re working on. The result was very promising the model achieved an accuracy of 72.7% on a database of 16 classes. In any case, this paper sheds light to researchers looking for the trade-offs between SDN performance and IA customization.

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Agrawal, Shweta, and Raj Kamal. "Computational Orchestrator: A Super Class for Matrix, Robotics and Control System Orchestration." International Journal of Computer Applications 117, no. 10 (May 20, 2015): 12–19. http://dx.doi.org/10.5120/20588-2923.

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Yakimova, V. A., and D. A. Vinokurov. "IT-COMPANIES AS ORCHESTRATORS OF ENTREPRENEURIAL ECOSYSTEMS." Intellect. Innovations. Investments, no. 5 (2024): 39–50. http://dx.doi.org/10.25198/2077-7175-2024-5-39.

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The article is devoted to the problem of strategic management of business systems in which the functions of an orchestrator are performed by an enterprise in the ICT sector. The purpose of the study is to identify types of strategies for organizing entrepreneurial ecosystems and describe their features in the context of the development of the digital economy. During the research process, a selection of 100 IT companies that were leaders in terms of revenue for 2021–2023 was studied. and their growth. Cluster analysis methods were used to test ecosystem criteria in relation to the ICT sector, typology methods and the construction of descriptive models. Statistical analysis showed that despite the reduction in the number of enterprises, in modern conditions there has been a tendency to increase the share of enterprises in the ICT sector in the economy. During the study of a sample of IT companies – industry leaders, 5 clusters were formed, the most typical characteristics of which were used to identify distinctive features. It was found that 56% of the studied sample of IT enterprises become orchestrators for entrepreneurial ecosystems, which corresponds to clusters 1–4. As a result of the similarity analysis, it was determined that in practice the strategy of acceleration, partnership, integration and customer-oriented strategy is used. For each type of orchestrator strategy, models have been generated and key features have been identified. A customer-centric orchestrator strategy is the most preferable for rapid growth and scale-up. The results obtained have important practical significance for organizing ecosystems with the leading role of the IT company orchestrator and choosing the most effective strategy. In further research, it is necessary to identify specific management actions and tools that are applicable for each type. In continuation, it is necessary to assess the productivity of ecosystems, taking into account the types of strategies and highlighting their competitive advantages.

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Lazarev, Nikita, and Oleg Borisenko. "Requirements and architecture design for cloud PaaS orchestrator." Proceedings of the Institute for System Programming of the RAS 34, no. 4 (2022): 211–28. http://dx.doi.org/10.15514/ispras-2022-34(4)-15.

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Cloud technologies provide abilities for simple and reliable scaling of resources, due to which they have become widespread. The task of managing distributed services in a cloud environment is especially relevant today. Special programs are used for that purpose named “orchestrators” which implement the functions of lifecycle management for applications. However, the existing solutions have many limitations and are not applicable in the general case. Also there is no single standard or protocol for interaction with such tools which requires adaptation of programs for each particular case. The main objectives of this paper are to identify the requirements for a platform-level cloud computing (PaaS) orchestrator, as well as to propose flexible architecture patterns for such tools.

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Williams, Ruth. "Actin, the great orchestrator." Journal of Cell Biology 178, no. 2 (July 2, 2007): 182. http://dx.doi.org/10.1083/jcb.1782rr2.

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Więcek, Dariusz, Igor Michalski, Krzysztof Rzeźniczak, and Dariusz Wypiór. "Multi-RAT Orchestration Method for Heterogeneous Wireless Networks." Applied Sciences 11, no. 18 (September 7, 2021): 8281. http://dx.doi.org/10.3390/app11188281.

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Currently, energy efficiency (EE) of wireless communication is essential where many wireless networks with different Radio Access Technologies (RATs) coexist together. The RATs can be effectively selected and managed on a higher level to achieve maximum EE and save energy, e.g., save batteries. The approach to wireless traffic steering in mobile networks with a proof-of-concept solution is presented in this paper, owing to the developed high-level multi-RAT (multi-Radio Access Technology) heterogonous network orchestration approach. Based on the high-level network orchestrator, which traces network indicators, it is possible to decrease the user mobile terminal energy consumption, keeping traffic speed at an adequate level. The solution discussed was implemented in an experimental testbed with Software Defined Radio transmission systems. Downlink and uplink data links were toggled among different RATs according to the decisions that were taken by the end-to-end multi-RAT orchestrator based on the received proper network traffic-related indicators. The authors focused on finding an adequate algorithm that allowed for reduced power usage in the user terminal and made the attempt to verify how to reach the power reduction without introducing RAT-specific rules. The results showed that the proposed orchestration EE reduction was observed (from 11% to 42% for two different scenarios) in relation to the single LTE network deployment. The orchestration compared to the Wi-Fi network does not provide EE gain (−7% and 0%, respectively), but allows the user to achieve a higher data rate (23% and 39% gain, respectively), thus keeping the energy efficiency at almost the same level.

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Fernandez, Vidal, and Valera. "Enabling the Orchestration of IoT Slices through Edge and Cloud Microservice Platforms." Sensors 19, no. 13 (July 5, 2019): 2980. http://dx.doi.org/10.3390/s19132980.

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This article addresses one of the main challenges related to the practical deployment of Internet of Things (IoT) solutions: the coordinated operation of entities at different infrastructures to support the automated orchestration of end-to-end Internet of Things services. This idea is referred to as “Internet of Things slicing” and is based on the network slicing concept already defined for the Fifth Generation (5G) of mobile networks. In this context, we present the architectural design of a slice orchestrator addressing the aforementioned challenge, based on well-known standard technologies and protocols. The proposed solution is able to integrate existing technologies, like cloud computing, with other more recent technologies like edge computing and network slicing. In addition, a functional prototype of the proposed orchestrator has been implemented, using open-source software and microservice platforms. As a first step to prove the practical feasibility of our solution, the implementation of the orchestrator considers cloud and edge domains. The validation results obtained from the prototype prove the feasibility of the solution from a functional perspective, verifying its capacity to deploy Internet of Things related functions even on resource constrained platforms. This approach enables new application models where these Internet of Things related functions can be onboarded on small unmanned aerial vehicles, offering a flexible and cost-effective solution to deploy these functions at the network edge. In addition, this proposal can also be used on commercial cloud platforms, like the Google Compute Engine, showing that it can take advantage of the benefits of edge and cloud computing respectively.

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Toigo, Taisson, Douglas Wegner, Silvio B. da Silva, and Felipe de Mattos Zarpelon. "Capabilities and skills to orchestrate innovation networks." Innovation & Management Review 18, no. 2 (June 7, 2021): 129–44. http://dx.doi.org/10.1108/inmr-10-2019-0126.

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Purpose This study aims to present a theoretical analysis on the capabilities (at the organizational) and skills (at the individual level) of the hub organization (orchestrator) in an innovation network. Design/methodology/approach The authors conducted literature reviews on the orchestration of innovation networks; and networking capabilities. Findings This study presents a theoretical model and a research agenda. Originality/value In interorganizational relations, a central actor can stand out the role of intentionally creating, extracting and distributing value in the network, generating gains for all members. Literature recognizes this set of intentional and deliberate actions as the “orchestration” of resources in the network. Despite the increasing interest regarding the theme, the phases and specific capabilities for orchestration still lack further investigation.

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Blasi, Francesco, and Peter Carmeliet. "uPAR: a versatile signalling orchestrator." Nature Reviews Molecular Cell Biology 3, no. 12 (December 2002): 932–43. http://dx.doi.org/10.1038/nrm977.

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Balbiani, Philippe, Fahima Cheikh, and Guillaume Feuillade. "Controller/Orchestrator Synthesis via Filtration." Electronic Notes in Theoretical Computer Science 262 (May 2010): 33–48. http://dx.doi.org/10.1016/j.entcs.2010.04.004.

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Munk, Rasmus, David Marchant, and Brian Vinter. "Cloud enabling educational platforms with corc." CTE Workshop Proceedings 8 (March 19, 2021): 438–57. http://dx.doi.org/10.55056/cte.299.

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In this paper, it is shown how teaching platforms at educational institutions can utilize cloud platforms to scale a particular service, or gain access to compute instances with accelerator capability such as GPUs. Specifically at the University of Copenhagen (UCPH), it is demonstrated how the internal JupyterHub service, named Data Analysis Gateway (DAG), could utilize compute resources in the Oracle Cloud Infrastructure (OCI). This is achieved by utilizing the introduced Cloud Orchestrator (corc) framework, in conjunction with the novel JupyterHub spawner named MultipleSpawner. Through this combination, we are able to dynamically orchestrate, authenticate, configure, and access interactive Jupyter Notebooks in the OCI with user defined hardware capabilities. These capabilities include settings such as the minimum amount of CPU cores, memory and GPUs the particular orchestrated resources must have. This enables teachers and students at educational institutions such as UCPH to gain easy access to the required capabilities for a particular course. In addition, we lay out how this groundwork, will enable us to establish a Grid of Clouds between multiple trusted institutions. This enables the exchange of surplus computational resources that could be employed across their organisational boundaries.

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De Giacomo, Giuseppe, Riccardo De Masellis, and Fabio Patrizi. "Composition of Partially Observable Services Exporting their Behaviour." Proceedings of the International Conference on Automated Planning and Scheduling 19 (October 16, 2009): 90–97. http://dx.doi.org/10.1609/icaps.v19i1.13360.

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In this paper we look at the problem of composing services that export their behavior in terms of a transition system, characterizing the choices of actions given to a client at each point in time. The composition consists of synthesizing an orchestrator that coordinates the available services so as to mimic the desired target service asked by the client. Specifically, in this paper we study the "conformant form" of the problem, where available services are partially controllable and partially observable, and hence, the orchestrator has to make its decisions exploiting the observations made so far only. We give a sound and complete procedure to synthesize the orchestrator in such case, and characterize the computational complexity of the problem. The procedure is based on working with belief (or knowledge) states, a standard technique to tackle conformant planning. Moreover we show that, although in general unavoidable, the powerset construction at the base of the belief state approach can be delegated to the symbolic manipulations of the game-structure model checking tool (TLV), which can be used to efficiently implement the orchestrator synthesis procedure.

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Hofmann Trevisan, Adriana, Camila Gonçalves Castro, Leonardo Augusto de Vasconcelos Gomes, and Janaina Mascarenhas. "CIRCULAR ECOSYSTEM STRUCTURE AND ORCHESTRATION: OUTLINING ACTIONS TO INNOVATE, INTEGRATE, AND INVEST." Proceedings of the Design Society 3 (June 19, 2023): 897–906. http://dx.doi.org/10.1017/pds.2023.90.

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AbstractCircular ecosystem is a growing research field that is gaining attention due to representing a more robust alignment structure than a single firm. However, prior research lacks empirical evidence on how circular ecosystems are structured and how orchestrators coordinate a set of actors towards a coherent circular value proposition. By studying nine organizations related to the carton packaging recycling ecosystem, we reveal the complexity of recovering and co-creating value in a systemic network with actors competing and collaborating simultaneously. Based on that, we propose a framework for orchestrating circular ecosystems. Our results indicate that orchestrators should integrate strategic actors, invest in infrastructure, and innovate in product design. We also discuss ecosystem resilience during and after the covid 19 pandemic, showing how the orchestrator was fundamental to the sustainability of the ecosystem. Overall, this paper contributes to increasing the understanding of inter-organizational relationships towards the circularity of resources.

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Palumbo, Carla, and Marzia Ferretti. "The Osteocyte: From “Prisoner” to “Orchestrator”." Journal of Functional Morphology and Kinesiology 6, no. 1 (March 17, 2021): 28. http://dx.doi.org/10.3390/jfmk6010028.

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Osteocytes are the most abundant bone cells, entrapped inside the mineralized bone matrix. They derive from osteoblasts through a complex series of morpho-functional modifications; such modifications not only concern the cell shape (from prismatic to dendritic) and location (along the vascular bone surfaces or enclosed inside the lacuno-canalicular cavities, respectively) but also their role in bone processes (secretion/mineralization of preosseous matrix and/or regulation of bone remodeling). Osteocytes are connected with each other by means of different types of junctions, among which the gap junctions enable osteocytes inside the matrix to act in a neuronal-like manner, as a functional syncytium together with the cells placed on the vascular bone surfaces (osteoblasts or bone lining cells), the stromal cells and the endothelial cells, i.e., the bone basic cellular system (BBCS). Within the BBCS, osteocytes can communicate in two ways: by means of volume transmission and wiring transmission, depending on the type of signals (metabolic or mechanical, respectively) received and/or to be forwarded. The capability of osteocytes in maintaining skeletal and mineral homeostasis is due to the fact that it acts as a mechano-sensor, able to transduce mechanical strains into biological signals and to trigger/modulate the bone remodeling, also because of the relevant role of sclerostin secreted by osteocytes, thus regulating different bone cell signaling pathways. The authors want to emphasize that the present review is centered on the morphological aspects of the osteocytes that clearly explain their functional implications and their role as bone orchestrators.

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Pyle, Marcus R. "Nina Simone as Poet and Orchestrator." Journal of Popular Music Studies 33, no. 2 (June 1, 2021): 130–47. http://dx.doi.org/10.1525/jpms.2021.33.2.130.

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How do you fashion an identity in a society that, at every turn, tries to snuff you out? In this article, I address Nina Simone's praxis of renaming and reinvention to demonstrate strategies of resistance. To this point, I analyze the musico-poetic setting of Nina Simone’s songs “Images” (1964) and “Four Women” (1965) to argue that her artistic musical choices sonically orchestrate varying issues of Black female subjectivity, identity, and self-making. In Simone’s songs, she refuses to discount the materiality of the Black body; instead, she envelops the Black body with signifiance and significance. The sonic bearers of semantic content become extensions of the Self—transmutable and heterodox. The compositional and poetic subtleties in these songs claim that the gaze of the Other can potentiate exteriority and freedom—what I term the “exo(p)tic.”

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Bakar Adni, Abu, Aloysius Evan Kristian, Iqbal Asyraf Lufty, and Tedy Tedy. "Faktor-Faktor yang Mempengaruhi Repurchase Intention dengan Variabel Mediasi Customer Satisfaction pada Network Orchestrator x." Indonesian Business Review 4, no. 1 (June 28, 2021): 1–23. http://dx.doi.org/10.21632/ibr.4.1.1-23.

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Perkembangan peer-to-peer lodging dimulai dengan kehadiran Airbnb pada tahun 2008 yang tersambung di 192 negara dan telah melayani 60 juta pelancong di seluruh dunia. Kehadiran Airbnb telah memunculkan beberapa model bisnis yang serupa yaitu network orchestrator. Di Indonesia muncul network orchestrator x pada tahun 2015 dengan model bisnis yang mirip hotel tetapi aset berupa gedung dan isinya dimiliki oleh partner/orang ketiga. Network orchestrator x menyediakan sistem aplikasi yang terintegrasi dengan smartphone. Dalam penelitian ini kuesioner disebarkan kepada 401 responden dan jumlah yang dapat digunakan sebanyak 226 kuesioner. Penelitian ini dilakukan dengan menambah dua variabel terhadap model penelitian yang sudah ada yaitu variabel tangible dan intangible, berdasarkan hasil penelitian. Faktor yang secara signifikan mempengaruhi customer satisfaction adalah product performance risk, room and bathroom size, staff’s helpfulness, accuracy of service, personal attention, dan customer satisfaction juga mempengaruhi secara signifikan terhadap repurchase intention.

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Papadakis-Vlachopapadopoulos, Konstantinos, Ioannis Dimolitsas, Dimitrios Dechouniotis, Eirini Eleni Tsiropoulou, Ioanna Roussaki, and Symeon Papavassiliou. "On Blockchain-Based Cross-Service Communication and Resource Orchestration on Edge Clouds." Informatics 8, no. 1 (February 26, 2021): 13. http://dx.doi.org/10.3390/informatics8010013.

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With the advent of 5G verticals and the Internet of Things paradigm, Edge Computing has emerged as the most dominant service delivery architecture, placing augmented computing resources in the proximity of end users. The resource orchestration of edge clouds relies on the concept of network slicing, which provides logically isolated computing and network resources. However, though there is significant progress on the automation of the resource orchestration within a single cloud or edge cloud datacenter, the orchestration of multi-domain infrastructure or multi-administrative domain is still an open challenge. Towards exploiting the network service marketplace at its full capacity, while being aligned with ETSI Network Function Virtualization architecture, this article proposes a novel Blockchain-based service orchestrator that leverages the automation capabilities of smart contracts to establish cross-service communication between network slices of different tenants. In particular, we introduce a multi-tier architecture of a Blockchain-based network marketplace, and design the lifecycle of the cross-service orchestration. For the evaluation of the proposed approach, we set up cross-service communication in an edge cloud and we demonstrate that the orchestration overhead is less than other cross-service solutions.

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Tedy, Tedy Tedy, Abu Bakar Adni, Aloysius Evan Kristian, Iqbal Asyarf Lufty, and Muhammad Faried Romdolni. "Faktor-Faktor yang Memengaruhi Repurchase Intention pada Network Orchestrator X." Jurnal Manajemen 17, no. 1 (October 30, 2020): 39–56. http://dx.doi.org/10.25170/jm.v17i1.1334.

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Abstract The development of peer-to-peer lodging begins with the presence of Airbnb in 2008 which is connected in 192 countries and served 60 million travelers worldwide. The presence of Airbnb has led to several similar business models, namely the network orchestrator. In Indonesia, network orchestrator x appeared in 2015 with a business model similar to a hotel, but assets in the form of buildings and their contents are owned by partners/third people. Network orchestrator x provides an application system integrated with a smartphone. In this study the questionnaire was distributed to 401 respondents and the number that could be used was 226 questionnaires. This research was conducted by adding two variables to the existing research model which is tangible and intangible variables. Based on the research, factors that significantly affect customer satisfaction are product performance risk, room and bathroom size, staff's helpfulness, accuracy of service, personal attention, and customer satisfaction also significantly influence repurchase intention.

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Karlingannavar, Rakshata, and Dr Nagaraj Bhat. "Orchestration of Micro services Using Conductor." Journal of University of Shanghai for Science and Technology 23, no. 06 (June 4, 2021): 250–55. http://dx.doi.org/10.51201/jusst/21/05254.

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The Microservices architectural design is widely used today which helps one to build an application as a set of services that can be developed and deployed independently. Each service is independent and gives a set of functions or features that can be individually serviced. In spite of the fact that microservices design has been advanced as the fix just for all cutting-edge application development ailments and is viewed as the replacement for API first application advancement, its execution needs undeniably more idea and practicality. In order for these independent services to work together towards a common goal, we need something that will stitch them together because they cannot work in complete isolation and need to share data and interact with one another. There are two ways to do this – microservice choreography and microservice orchestration. This paper tries to explain the difference between choreography and orchestration of microservices, and why the latter is better. We will then discuss the orchestration of microservices using an open-sourced microservices orchestrator – Conductor.

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Peng, Shuping, Jose Oscar Fajardo, Pouria Sayyad Khodashenas, Begoña Blanco, Fidel Liberal, Cristina Ruiz, Charles Turyagyenda, Mick Wilson, and Sunil Vadgama. "QoE-Oriented Mobile Edge Service Management Leveraging SDN and NFV." Mobile Information Systems 2017 (2017): 1–14. http://dx.doi.org/10.1155/2017/3961689.

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5G envisages a “hyperconnected society” where trillions of diverse entities could communicate with each other anywhere and at any time, some of which will demand extremely challenging performance requirements such as submillisecond low latency. Mobile Edge Computing (MEC) concept where application computing resources are deployed at the edge of the mobile network in proximity of an end user is a promising solution to improve quality of online experience. To make MEC more flexible and cost-effective Network Functions Virtualisation (NFV) and Software-Defined Networking (SDN) technologies are widely adopted. It leads to significant CAPEX and OPEX reduction with the help of a joint radio-cloud management and orchestration logic. In this paper we discuss and develop a reference architecture for the orchestration and management of the MEC ecosystem. Along with the lifecycle management flows of MEC services, indicating the interactions among the functional modules inside the Orchestrator and with external elements, QoS management with a focus on the channel state information technique is presented.

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Toldi, Balázs Ádám, and Imre Kocsis. "Blockchain-Based, Confidentiality-Preserving Orchestration of Collaborative Workflows." Infocommunications journal 15, no. 3 (2023): 72–81. http://dx.doi.org/10.36244/icj.2023.3.8.

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Business process collaboration between independent parties is challenging when participants do not completely trust each other. Tracking actions and enforcing the activity authorizations of participants via blockchain-hosted smart contracts is an emerging solution to this lack of trust, with most state-of-the-art approaches generating the orchestrating smart contract logic from Business Process Model and Notation (BPMN) models. However, compared to centralized business process orchestration services, smart contract state typically leaks potentially sensitive information about the state of the collaboration, limiting the applicability of decentralized process orchestration. This paper presents a novel, collaboration confidentiality-preserving approach where the process orchestrator smart contract only stores encrypted and hashed process states and validates participant actions against a BPMN model using zero-knowledge proofs. We cover a subset of BPMN, which is sufficient from the practical point of view, support messagepassing between participants, and provide an open-source, endto-end prototype implementation that automatically generates the key software artifacts.

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Gyurjyan, Vardan, and Sebastian Mancilla. "Heterogeneous data-processing optimization with CLARA’s adaptive workflow orchestrator." EPJ Web of Conferences 245 (2020): 05020. http://dx.doi.org/10.1051/epjconf/202024505020.

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The hardware landscape used in HEP and NP is changing from homogeneous multi-core systems towards heterogeneous systems with many different computing units, each with their own characteristics. To achieve maximum performance with data processing, the main challenge is to place the right computing on the right hardware. In this paper, we discuss CLAS12 charge particle tracking workflow orchestration that allows us to utilize both CPU and GPU to improve the performance. The tracking application algorithm was decomposed into micro-services that are deployed on CPU and GPU processing units, where the best features of both are intelligently combined to achieve maximum performance. In this heterogeneous environment, CLARA aims to match the requirements of each micro-service to the strength of a CPU or a GPU architecture. A predefined execution of a micro-service on a CPU or a GPU may not be the most optimal solution due to the streaming data-quantum size and the data-quantum transfer latency between CPU and GPU. So, the CLARA workflow orchestrator is designed to dynamically assign micro-service execution to a CPU or a GPU, based on the online benchmark results analyzed for a period of real-time data-processing.

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Hsiao, Chiu-Han, Yean-Fu Wen, Frank Yeong-Sung Lin, Yu-Fang Chen, Yennun Huang, Yang-Che Su, and Ya-Syuan Wu. "An Optimization-Based Orchestrator for Resource Access and Operation Management in Sliced 5G Core Networks." Sensors 22, no. 1 (December 24, 2021): 100. http://dx.doi.org/10.3390/s22010100.

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Network slicing is a promising technology that network operators can deploy the services by slices with heterogeneous quality of service (QoS) requirements. However, an orchestrator for network operation with efficient slice resource provisioning algorithms is essential. This work stands on Internet service provider (ISP) to design an orchestrator analyzing the critical influencing factors, namely access control, scheduling, and resource migration, to systematically evolve a sustainable network. The scalability and flexibility of resources are jointly considered. The resource management problem is formulated as a mixed-integer programming (MIP) problem. A solution approach based on Lagrangian relaxation (LR) is proposed for the orchestrator to make decisions to satisfy the high QoS applications. It can investigate the resources required for access control within a cost-efficient resource pool and consider allocating or migrating resources efficiently in each network slice. For high system utilization, the proposed mechanisms are modeled in a pay-as-you-go manner. Furthermore, the experiment results show that the proposed strategies perform the near-optimal system revenue to meet the QoS requirement by making decisions.

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Malone, Lorna A., Matthew S. Proctor, Andrew Hitchcock, C. Neil Hunter, and Matthew P. Johnson. "Cytochrome b6f – Orchestrator of photosynthetic electron transfer." Biochimica et Biophysica Acta (BBA) - Bioenergetics 1862, no. 5 (May 2021): 148380. http://dx.doi.org/10.1016/j.bbabio.2021.148380.

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Domínguez-Calvo, Andrés, Pierre Gönczy, Andrew J. Holland, and Fernando R. Balestra. "TRIM37: a critical orchestrator of centrosome function." Cell Cycle 20, no. 23 (October 21, 2021): 2443–51. http://dx.doi.org/10.1080/15384101.2021.1988289.

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Félétou, Michel, Ralf Köhler, and Paul M. Vanhoutte. "Nitric oxide: Orchestrator of endothelium-dependent responses." Annals of Medicine 44, no. 7 (September 7, 2011): 694–716. http://dx.doi.org/10.3109/07853890.2011.585658.

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Roy, Soumen, and Giorgio Trinchieri. "Microbiota: a key orchestrator of cancer therapy." Nature Reviews Cancer 17, no. 5 (March 17, 2017): 271–85. http://dx.doi.org/10.1038/nrc.2017.13.

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Hariharan, Nirmala, and Mark A. Sussman. "Pin1: A molecular orchestrator in the heart." Trends in Cardiovascular Medicine 24, no. 6 (August 2014): 256–62. http://dx.doi.org/10.1016/j.tcm.2014.05.010.

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Sebrechts, Merlijn, Gregory Van Seghbroeck, Tim Wauters, Bruno Volckaert, and Filip De Turck. "Orchestrator conversation: Distributed management of cloud applications." International Journal of Network Management 28, no. 6 (July 10, 2018): e2036. http://dx.doi.org/10.1002/nem.2036.

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Kovalenko, V. V., and M. M. Bukasov. "Scheduling Methods and Models for Kubernetes Orchestrator." Visnyk of Vinnytsia Politechnical Institute 175, no. 4 (2024): 86–94. http://dx.doi.org/10.31649/1997-9266-2024-175-4-86-94.

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Maree, Johannes P., and Marius Bagle. "A Building Automation and Control micro-service architecture using Physics Inspired Neural Networks." E3S Web of Conferences 362 (2022): 13001. http://dx.doi.org/10.1051/e3sconf/202236213001.

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In this work, we present a micro-service architecture which defines a Digital Twin (DT) framework for adaptive building automation and control. The DT framework primarily involves the orchestration of several containerized micro-services, promoting the scalability and deployability of the proposed framework within the industrial context. In the proposed framework, containerized microservices facilitate: (i) model-based control strategies; (ii) data-driven learning; (iii) data management; (iv) the inclusion of an internal High-Fidelity Simulator (HFS) to enable bootstrapped learning; and (v) a User Interface/User Experience (UI/UE) micro-service orchestrator. To validate the usefulness of the proposed framework, we implement a Physics Inspired Neural Network (PINN) to adapt the model-based control strategies for plant-model uncertainty and utilize bootstrap sampling against an internal HFS.

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Kumar, Maneesh, Madeleine Pullman, Tatiana Bouzdine-Chameeva, and Vasco Sanchez Rodrigues. "The role of the hub-firm in developing innovation capabilities: considering the French wine industry cluster from a resource orchestration lens." International Journal of Operations & Production Management 42, no. 4 (March 8, 2022): 526–51. http://dx.doi.org/10.1108/ijopm-08-2021-0519.

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PurposeThis paper explores how hub-firms in a regional industrial cluster orchestrate resources to enhance the innovation capabilities of member firms and how this role changes as innovation projects develop. The work advances our understanding of how innovation-oriented clusters can drive the collaboration process, support the development of member capabilities and achieve desired outcomes.Design/methodology/approachThe research utilises exploratory case studies within an innovation cluster, where a hub-firm brings together different players for specific innovation projects. Using resource orchestration theory, the paper analyses six project cases to reveal the shifting roles and activities related to structuring, bundling and leveraging different resources for innovation capabilities particularly associated with improved quality and reputation for the firms and region.FindingsThe study reveals the important role played by the cluster hub-firm in structuring, bundling and leveraging resources to create and fund project teams. After project formation, a team member takes the role of an orchestrator to bundle further and then leverage the resources to achieve desired outcomes for the team and the region.Research limitations/implicationsThis work focuses on a wine industry but has implications for the success orchestration of other regional industrial clusters. Also, the lack of hub-firm interaction during the project process provides an opportunity to consider mechanisms for better guidance of the project team.Practical implicationsThere are implications for practitioners for participating in and further improving the collaborative innovative process.Social implicationsPolicymakers can benefit from the study as the required practices for stimulating innovation capabilities and economic development in a region are discussed.Originality/valueThis research enhances understanding of the hub-firm's role in a regional cluster not only in orchestrating resources to create collaborative innovation projects but how the role shifts over time.

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Kuricova, Katarina, Anna Pleskacova, Lukas Pacal, and Katerina Kankova. "1,25-Dihydroxyvitamin D increases the gene expression of enzymes protecting from glucolipotoxicity in peripheral blood mononuclear cells and human primary endothelial cells." Food & Function 7, no. 6 (2016): 2537–43. http://dx.doi.org/10.1039/c5fo01560j.

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Wang, Mu, Nurullah Karakoc, Lorenzo Ferrari, Prateek Shantharama, Akhilesh S. Thyagaturu, Martin Reisslein, and Anna Scaglione. "A Multi-Layer Multi-Timescale Network Utility Maximization Framework for the SDN-Based LayBack Architecture Enabling Wireless Backhaul Resource Sharing." Electronics 8, no. 9 (August 26, 2019): 937. http://dx.doi.org/10.3390/electronics8090937.

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With the emergence of small cell networks and fifth-generation (5G) wireless networks, the backhaul becomes increasingly complex. This study addresses the problem of how a central SDN orchestrator can flexibly share the total backhaul capacity of the various wireless operators among their gateways and radio nodes (e.g., LTE enhanced Node Bs or Wi-Fi access points). In order to address this backhaul resource allocation problem, we introduce a novel backhaul optimization methodology in the context of the recently proposed LayBack SDN backhaul architecture. In particular, we explore the decomposition of the central optimization problem into a layered dual decomposition model that matches the architectural layers of the LayBack backhaul architecture. In order to promote scalability and responsiveness, we employ different timescales, i.e., fast timescales at the radio nodes and slower timescales in the higher LayBack layers that are closer to the central SDN orchestrator. We numerically evaluate the scalable layered optimization for a specific case of the LayBack backhaul architecture with four layers, namely a radio node (eNB) layer, a gateway layer, an operator layer, and central coordination in an SDN orchestrator layer. The coordinated sharing of the total backhaul capacity among multiple operators lowers the queue lengths compared to the conventional backhaul without sharing among operators.

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Schröder, Désirée, Caroline Kiselev, Sina Rohner, Tobias Kautz, and Peter Rohner. "Entwicklung, Einsatz und Wirkung des Digital Transformation Orchestrator." Controlling 34, no. 1 (2022): 59–64. http://dx.doi.org/10.15358/0935-0381-2022-1-59.

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Die Digitale Transformation ist komplex und eine große Herausforderung für Organisationen. Der Einsatz digitaler Technologien erlaubt neue, durchgängigere, kundenorientiertere Leistungen, fordert aber gleichzeitig unterschiedlichste, teils massive interne Veränderungen. Dabei fehlt oft die Übersicht darüber, worüber Klarheit geschaffen und was gemacht werden sollte. Um Abhilfe zu schaffen, wurde der Digital Transformation Orchestrator entwickelt.

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Vinet, Hughes. "Sample Orchestrator : gestion par le contenu d’échantillons sonores." Traitement du signal 28, no. 3-4 (August 28, 2011): 417–68. http://dx.doi.org/10.3166/ts.28.417-468.

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Journal articles on the topic 'Orchestrator'

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