scholarly journals Scalability Optimization of Seamless Positioning Service

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Juraj Machaj ◽  
Peter Brida ◽  
Jozef Benikovsky

Recently positioning services are getting more attention not only within research community but also from service providers. From the service providers point of view positioning service that will be able to work seamlessly in all environments, for example, indoor, dense urban, and rural, has a huge potential to open new markets. However, such system does not only need to provide accurate position estimates but have to be scalable and resistant to fake positioning requests. In the previous works we have proposed a modular system, which is able to provide seamless positioning in various environments. The system automatically selects optimal positioning module based on available radio signals. The system currently consists of three positioning modules—GPS, GSM based positioning, and Wi-Fi based positioning. In this paper we will propose algorithm which will reduce time needed for position estimation and thus allow higher scalability of the modular system and thus allow providing positioning services to higher amount of users. Such improvement is extremely important, for real world application where large number of users will require position estimates, since positioning error is affected by response time of the positioning server.

Author(s):  
Ramesh Raghavan

This chapter presents an overview of how D&I research can be evaluated from an economic point of view. Dissemination and implementation imposes costs upon knowledge purveyors, provider organizations, public health organizations, and payers (including governments). However, whether these added costs will result in improved service delivery and, perhaps more importantly, client outcomes and improvements in population health remain as open questions. If emerging studies reveal that defined implementation strategies are more cost effective than “usual” implementation, then policymakers and service providers will need to resource these added costs of implementation in order to assure the success and sustainability of high-quality health services over the long term.


Work ◽  
2021 ◽  
Vol 68 (s1) ◽  
pp. S239-S243 ◽  
Author(s):  
G. Torkashvand ◽  
L. Stephane ◽  
P. Vink

BACKGROUND: Cabin research is mostly based on passenger reports. However, it is also important to consider the perceptions of flight attendants as onboard service providers, since they can convey a complementary view shedding light on important aspects related to passenger experience. OBJECTIVE: This study seeks to analyze flight-attendants’ perception regarding passengers’ inflight activities and experience. METHODS: Twenty-eight flight attendants were interviewed on more than twenty-three inflight activities that were extracted from a brainstorming session. A survey was designed based on these activities and was distributed to flight attendants. RESULTS: Overall, flight attendants perceived the activities ‘resting/relaxing’, ‘sleeping’ and ‘using the restroom’ for comfort as the most important activities to passengers, while activities ‘talking to neighbors’ and ‘thinking and observing’ were the least important ones. Interesting was the fact that flight attendants scored satisfaction of some activities higher then passengers. CONCLUSIONS: Flight attendants had a similar idea on importance of activities of passengers, but they valued some activities as more satisfactory.


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.


Author(s):  
Indira Ananth ◽  
Dananjayan Madhava Priya

On November 8, 2016, Government of India declared demonetization of all Rs. 500/- and Rs.1000/- currency notes towards a cashless society and create a digital India. The point of sale (PoS) and prepaid instruments are the most popular systems currently installed by merchants and service providers for receiving payments from customers. The primary focus of the study is to understand the adaptability, affordability, acceptability, and sustainability of the payments system as seen from the point of view of small merchants. A total of 221 responses were collected in Chennai. Results show that cash remains the most preferred mode for business. It is required for the working capital, payment of employee remuneration, wages, and others. With regards to the use of payment systems such as POS and prepaid instruments, awareness needs to be created of the benefits in having non-cash transactions. Improving credit worthiness and eligibility to receive loans from banks is one such benefit which would convince the merchants. However, too many systems could confuse the merchants and customers.


Author(s):  
Ana André ◽  
Fernanda Sampaio

Information Systems (IS) Outsourcing has emerged as a strategic option to be considered and has been increasingly adopted by managers. However, many contracts still fail during their initial years, meaning that Outsourcing has also been subject to strong criticism. There are advantages to Outsourcing but also significant risks associated to it, and the assessment of both is therefore of great relevance for informed decision-making. The objective of this chapter is to determine to what extent a common view about risks and benefits associated to IS Outsourcing is shared by the Portuguese market players: Service Providers, Clients and Opinion Makers. In order to accomplish this, an on-line Delphi study was conducted, combined with the Q-sort technique, which allowed to obtain the perspective of each player on the risks and benefits IS Outsourcing. Comparing these perspectives it was possible to understand that the market players don’t share the same point of view.


Author(s):  
Ryota Egashira ◽  
Akihiro Enomoto ◽  
Tatsuya Suda

In Service-Oriented Computing, service providers publish their services by deploying service components which implement those services into a network. Since such services are distributed around the network, Service-Oriented Computing requires the functionality to discover the services that meet certain criteria specified by an end user. In order to overcome the scalability issue that the current centralized discovery mechanism inherently has, distributed discovery mechanisms that the P2P research community has developed may be promising alternatives. This chapter outlines existing distributed mechanisms and proposes a novel discovery mechanism that utilizes end users’ preferences. The proposed mechanism allows end users to return their feedback that describes the degree of the preference for discovered services. The returned preference information is stored at nodes and utilized to decide where to forward subsequent queries. The extensive simulation demonstrates that the proposed mechanism meets key requirements such as selectivity, efficiency and adaptability.


2017 ◽  
Vol 9 (1) ◽  
pp. 35-56 ◽  
Author(s):  
Pierre-Yves Léo ◽  
Vikrant Janawade ◽  
Jean Philippe

This research focuses on the customers' perception of loyalty programme offered by networked service providers such as airline alliances. The authors call such services meta-services. Their main hypothesis is that after experiencing meta-services delivered by meta-service providers, consumers synthesise a part of their perceptions in terms of the perceived benefits of the loyalty programme. This assessment will influence the perceived value, satisfaction, and at last behavioural intentions. The authors' point of view is to highlight the determinants of this assessment, including the quality of the proposed services and rewards. A quantitative survey was conducted in an airline alliance context. A structural equation model is tested in order to verify if the hypotheses are acceptable. It also shows how passengers build their global evaluation of a frequent flyer program and how far it influences their future behaviour towards the alliance members.


2018 ◽  
Vol 246 ◽  
pp. 03024
Author(s):  
Pengfei Wang ◽  
Weidong Li ◽  
Xinping Wang ◽  
Xianwu Chu

A train positioning method based on GPS and digital rail line matching is proposed. Firstly, the digital track line is generated based on the fitting and interpolation algorithm of train track line. And then the GPS data are corrected by the track line positioning correction method, and the more accurate position estimation of the train is obtained. Finally, the data track line is simulated and analyzed with some measured data from Harbin to Qigihar track line. The analysis results show that cubic spline curve is better than cubic B-spline curve on the establishment of digital track map.


Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 585 ◽  
Author(s):  
Jaroslav Frnda ◽  
Jan Nedoma ◽  
Jan Vanus ◽  
Radek Martinek

The internet protocol television service (IPTV) has become a key product for internet service providers (ISP), offering several benefits to both ISP and end-users. Because packet networks based on internet protocol have not been prepared for time-sensitive services, such as voice or video, packet networks have had to adopt several mechanisms to secure minimal transmission standards in the form of data stream prioritization. There are two commonly used approaches for video quality assessment. The first approach needs an original source for comparison (full-reference objective metrics), and the second one requires observers for subjective evaluation of video quality. Both approaches are impractical in real-time transmission because it is difficult to transform an objective score into a subjective quality perception, and on the other hand, subjective tests are not able to be performed immediately. Since many countries worldwide put IPTV on the same level as other broadcasting systems (e.g., terrestrial, cable, or satellite), IPTV services are subject to regulation by the national regulation authority. This results in the need to prepare service qualitative criteria and monitoring tools capable of measuring end-user satisfaction levels. Our proposed model combines the principles of both assessment approaches, which results in an effective monitoring solution. Therefore, the main contribution of the created system is to offer a monitoring tool able to analyze the features extracted from the video sequence and transmission system and promptly translate their impact into a subjective point of view.


Sign in / Sign up

Export Citation Format

Share Document