Grid Workflows with Encompassed Business Relationship

Author(s):  
Dimosthenis Kyriazis ◽  
Andreas Menychtas ◽  
Theodora Varvarigou

This chapter focuses on presenting and describing an approach that allows the mapping of workflow processes to Grid provided services by not only taking into account the quality of service (QoS) parameters of the Grid services but also the potential business relationships of the service providers that may affect the aforementioned QoS parameters. This approach is an integral part of the QoS provisioning, since this is the only way to estimate, calculate, and conclude to the mapping of workflows and the selection of the available service types and instances in order to deliver an overall quality of service across a federation of providers. The added value of this approach lays on the fact that business relationships of the service providers are also taken into account during the mapping process.

2012 ◽  
pp. 1332-1348
Author(s):  
Dimosthenis Kyriazis ◽  
Andreas Menychtas ◽  
Theodora Varvarigou

This chapter focuses on presenting and describing an approach that allows the mapping of workflow processes to Grid provided services by not only taking into account the quality of service (QoS) parameters of the Grid services but also the potential business relationships of the service providers that may affect the aforementioned QoS parameters. This approach is an integral part of the QoS provisioning, since this is the only way to estimate, calculate, and conclude to the mapping of workflows and the selection of the available service types and instances in order to deliver an overall quality of service across a federation of providers. The added value of this approach lays on the fact that business relationships of the service providers are also taken into account during the mapping process.


2013 ◽  
Vol 4 (1) ◽  
pp. 29-42 ◽  
Author(s):  
Thu-Huong Truong ◽  
Nguyen Huu Thanh ◽  
Nguyen Tai Hung

To let the service system react quickly on customers’ perception or user experience while using the service, mapping functions between Quality of Experience (QoE) and Quality of Service (QoS) are strongly required in purpose of building up an intelligent QoE control system upon adjusting QoS parameters. This article studies the changing behavior of QoE with respect to changes of QoS parameters in the context of video streaming service in an IP Multimedia Subsystem-based IP Television network (IMS-based IPTV network). The article is, in fact, an extended version of the paper published by the same authors (Thu-Huong Truong, 2012). In (Thu-Huong Truong, 2012), the authors studied QoE in both terms of Mean Opinion Scores and VQM as functions of each single QoS parameter such as: loss, jitter, and delay. In this extended content, the correlation between QoE and multiple QoS parameters will be introduced. The QoE-QoS correlation could be a significant first step to build a smart QoE monitoring and control mechanism as an added value to promote the IMS-based IPTV network.


2011 ◽  
Vol 60 (2) ◽  
Author(s):  
Hubertus Gersdorf

AbstractIn principle, all data on the Internet have so far been transmitted on the basis of best-effort, i.e. equally and without change, regardless of content, service, application, origin or destination. Quality of Service (QoS) has not been excluded, but has instead generally been limited to the access network of the Internet Service Provider (access-ISP) (IPTV, VoIP etc.). Now, the ISPs plan to offer such a QoS on the Internet as well by means of various prioritised transport groups. These QoS transport groups are not supposed to displace, but rather to complement the best effort area (QoS and best effort). Hereby the ISP first expect to participate more in the added value of the Internet. Secondly, the problems caused by the bottleneck for timecritical services and other forms of QoS (IPTV, VoIP, gaming etc.) are to be eliminated. Thirdly, various transport groups and various groups of products (IPTV, VOD, interactive services such as gaming etc.) characterised by specific technical features of performance and features of quality are to be composed and marketed by the ISP to the content provider, to the service provider and to the consumer. In order to guarantee such QoS on the Internet, the ISP have to agree on cross-network technical standards for QoS.Both the European Commission and the German legislator, being competent for transposing the EU directives on telecommunications into national law, take a careful approach to the issue of network neutrality. For the case that ISP limit the access or the use of services the directives provide for transparency rules aimed at guaranteeing the comsumer’s freedom of choice. Beyond that, minimum requirements for the quality of service can be set in order to prevent impairment of services and hindrance or slowdown of data traffic in the nets. Hereby consumers are protected comprehensively. As it stands more regulation is not necessary. The risk of discrimination coming from vertical integration can be addressed by means of sector-specific regulatory law (cf. § 42 German Telecommunications Act - TKG) and by means of general competition law (cf. §§ 19, 20 Act Against Restraints of Competition - GWB, Article 102 Treaty on the Functioning of the European Union - AEUV). The composition of the various QoS transport groups and marketing to the content provider, to the service provider and to the consumer do not as such give rise to a need for regulation. In fact, the formation of (cross-network) QoS transport groups constitutes a pre-condition for consumers booking such QoS on the Internet. However, all content providers and service providers seeking access to QoS transport groups must have such access according to non-discriminatory terms. Such non-discriminatory access can be adequately guaranteed by sector-specific regulatory law and general competition law. At present, subject to the condition of there being a robust and dynamically developing best effort area in addition to QoS transport groups, more regulation is not necessary. However, it cannot be predicted whether the different QoS transport groups will emerge or not. Regulation „at random“ is as pointless as „symbolic regulation“.


Quality of Service refers to the evaluation of the overall performance of a service, such as a telephony or computer network particularly the performance seen by the users of the network. QoS is mostly observed from the subscriber’s side. This includes aspects such as the mobile signal strength available to users and other call avaibility measurements. QoS is normally calculated during signal transmission called KPIs that is connected to the subscriber’s happiness whilst using mobile services. QoS parameters are monitored through RF analysis by Drive Test. Some of these QoS parameters related to call and data are discussed in this paper. These parameters directly or indirectly represents the quality of service provided by the network operators in context of Nepal. This analysis of parameters has helped us identify problems like call performance, slow servicing, least ease of use in a service test area for different service providers in the country.


2021 ◽  
pp. 2516600X2199720
Author(s):  
Adimuthu Ramasamy ◽  
Kamalakanta Muduli ◽  
Aezeden Mohamed ◽  
Jitendra Narayan Biswal ◽  
John Pumwa

Taxi services have evolved with the growth of information communication services and have become an essential infrastructure in a city’s transport landscape. In today’s era, mobility has become a vital need for people as they contemplate how to accomplish specific tasks, which require travel, time, and distance. Taxi services have filled this void by allowing people to commute to the last mile and meet their daily requirements. Failure of cab service operators to offer affordable and reliable taxi service would result in inferior taxi services that lead to dissatisfaction among customers. The key objective of this research was to determine important factors, namely, socioeconomic and service attribute factors that influence people’s choice based on satisfaction levels in selecting a particular taxi service like Ola and Uber in Bhubaneswar city. The study found that socioeconomic and service attribute factors were important in determining the choice of taxi service. Furthermore, it also revealed that people were more sensitive to the reliability of taxi service and cost in comparison to the quality of service and driver’s behavior. The study results would help cab service providers in customizing their services to attract more customers and increase their market share.


2021 ◽  
Vol 7 (4) ◽  
pp. 212
Author(s):  
Katarzyna Turoń ◽  
Andrzej Kubik

The market for shared mobility services is growing very quickly. New types of vehicles have been introduced, and the offer of available services and functionalities has expanded, the purpose of which is to improve the quality of service. Despite all the improvements, it is still not possible to speak of achieving full availability of systems that meet the needs of users. This is due to the reluctant involvement of operators of shared mobility systems in joining Mobility as a Service platforms based on the idea of open innovation. The aim of the article is to analyze the factors influencing the limitations in the development of open innovations in the form of Mobility as a Service (MaaS) services. The authors focus on identifying the challenges and concerns faced by shared mobility service providers. The article supports the development of the concept of open innovation in shared mobility services. It also contains practical recommendations for the development of MaaS systems. The results of the developed research can be used by operators of shared mobility services, transport authorities, or IT service providers providing MaaS services to strengthen cooperation and integration using the language of mutual benefit.


Author(s):  
Alexander Olave ◽  
Luis Felipe Valencia ◽  
Juan Carlos Cuéllar

Resumen Voz sobre IP, VoIP, es uno de los servicios con mayor desarrollo bajo plataformas inalámbricas; actualmente se ha iniciado su implementación como alternativa frente a la PSTN (red pública conmutada). El interés por VoIP radica en su relación costo-beneficio, ya que las organizaciones pueden utilizar la misma plataforma de su red de datos para transmitir voz. Por lo anterior, es importante que la organización tenga claro que, para garantizar el buen funcionamiento del servicio de VoIP, es decir para ofrecer QoS, se debe realizar la medición de parámetros que afectan la calidad del servicio como lo son: el retardo, la variación del retardo, el ancho de banda y la pérdida de paquetes. Este artículo analiza y valida los parámetros de QoS necesarios para garantizar el buen funcionamiento del servicio de VoIP sobre la red inalámbrica del campus de la Universidad Icesi. Se realizan pruebas en diferentes escenarios para mostrar que no solo factores como el retardo, y su variación, influyen en la calidad de servicio, sino que también la intensidad de la señal que recibe el cliente desde los puntos de acceso.Palabras Clave: Voz sobre IP, Calidad de servicio, Pérdida de paquetes, Retardo, Variación del Retardo, Intensidad de Señal. Abstract VoIP is one of the services that has been developing over under this type of wireless platforms and today has begun to implement as an alternative to the PSTN (Public Switched Telephone Network). The interest in VoIP is its cost-benefit ratio, and that organizations can use the same platform for their data network to transmit voice. Therefore it is important that the organization is clear that to ensure the smooth operation of the VoIP service, ie provide QoS, you must perform the measurement of parameters that affect the quality of service such as: delay, jitter, bandwidth, packet loss. In this paper we analyze and validate the QoS parameters needed to ensure the smooth operation of VoIP over wireless network on the Icesi University campus. We performed a series of tests in different scenarios to show that not only factors such as delay and jitter influencing the quality of service, but also the client signal strength received from of the AP (Access Point).Keywords: Voice over IP, Quality of service, Packet Loss, Delay, Delay variation, signal intensity.


Author(s):  
Aulia Desy Aulia Nur Utomo

Abstract In the use of internet networks that are general in nature need to implement an appropriate network configuration to maximize the use of internet connections provided by service providers. This is important for the optimal use of internet services and in accordance with utilities that are basically general and shared can be achieved. Per Connection Classifier is a load balancing method for distributing traffic loads to more than one network connection point in a balanced way, so that traffic can run optimally. This research focuses on network configuration methods to maximize internet usage for all users. Quality of Service is used to see the performance of network traffic which is indicated by the value of the parameter delay, throughput, and packet loss. Based on the results of testing and research that have been carried out before and after using load balancing per connection clasifier, the delay value is decreased from 180.26 ms to 148.36 ms and throughput increased from 1.76% to 2.03%, then packet loss decreased from 25.37% to 18.59% according to the TIPHON standard. Keywords: Quality of Service, Per Connection Classification, load balancing, delay, throughput, packet loss


2013 ◽  
Vol 11 (8) ◽  
pp. 345
Author(s):  
Ofer Barkai

This research project, which was implemented in an organization whose primary function is providing service (Telecommunication company), studies the scope of the correlation between the quality of service from the customers point of view (customer survey) and the organization (Telecommunication company systems). The research is important both for economic and scientific reasons. It involves many organizational control units which require significant monetary investments. From a scientific point of view, the research is important because it can shed light on the asymmetrical point of view existing between customers and organizations. Organizations that are service providers place high importance on the quality of service and their image as perceived by their customers. Quality of service is measured through internal control processes and from there is passed on to the staff who are directly involved in customer service. In this study, we focus on a large organization which implements control processes and then provides service to customers. Therefore, the activities of this organization are judged first and foremost on the basis of the service quality provided. The existing internal control processes of the organization, which measure the standard of service provided on the basis of organizational benchmarks are separate from those that measure customer satisfaction. In this project, we analyze the correlation between the outlook of the customer and the results of internal control processes.


WSN stands for Wireless Sensor Network it is an prefect models of the IoT or Internet of Things that gives checking administrations to catastrophic events, for example, volcanoes ejection and seismic tremor which can influence the life of person. All things considered, the QoS or Quality-of-Service it is a significant problem of the basic application so that it is adequate as well as heartiness is guaranteed. Other than this without a doubt administrations and commitments in checking frameworks, WSN's restricted assets can seriously corrupt the Quality-of-Service in the application of Internet of Things. There will be a decrease in the Quality-of-Service because of the blockage in the wireless service network in the application. For these situtations proficient utilization for the rare assets might be critical for guaranteeing consistent tramission of the information. Decreasing pace in the retransmission of the parcel that occurs due to the blockage diminishes sensor hubs power utilization. PDNC also known as Packet Discarding based Node Clustering that is a specific bundle disposing of technique is presented in this research paper. Every hubs conveyed will be bunched to a few gatherings that focuses on the zone and at once selection of a group head will be done. Parcel disposing of procedure will at that point be conveyed at every hub to diminish the quantity of bundles adding to blockage. Reenactment examination utilizing NS-2 demonstrates that the proposed method can lessen blockage along these lines improve the general execution.


Sign in / Sign up

Export Citation Format

Share Document