CHARACTERISTICS OF WAITING LINE MODELS – THE INDICATORS OF THE CUSTOMER FLOW MANAGEMENT SYSTEMS EFFICIENCY

This paper is dedicated to the presentation of the single-channel waiting line systemswith Poisson arrivals and exponential service times.They represent stages of customer flowmanagement processes. Waiting systems are stochastic mathematical models and they represent thedescribing base of the waiting phenomena, service processes, prioritization, etc. Mathematicalmodels of queuing theory present interest in modeling, designing and analysing of nowadaysinformation networks. Increasing trend of their development and emergence of new networktechnologies, impose new requirements regarding the development of new mathematicals waitingmodels. In this paper we merely present the single-channel waiting line model, with example on afast-food restaurant.customer flow, queuing theory, waiting system, waiting line, efficiency

Existence of solutions for a certain differential inclusion of third order

The existence of solutions of a boundary value problem for a third order differential inclusion is investigated. New results are obtained by using suitable fixed point theorems when the right hand side has convex or non convex values

DETERMINATION OF USERS SATISFACTION LEVEL REGARDING THE QUALITY OF E-SERVICES PROVIDED BY “BOGDAN-VODA†UNIVERSITY

The results of researches present in the specialized literature emphasize thatthe evaluation of both e-services and traditional services is based on the customers’individual experiences.This paper presents a study conducted for evaluating the e-services provided by BogdanVoda University from an attitudinal perspective, based on 5 indicators of the servicesquality dimensions (tangibles, reliability, responsiveness, assurance and empathy).The study was performed to establish the quality of the e-services provided by theuniversity and whether these services influence the university image. Two basic, but wellstructured questionnaires were used in conducting this study: the first reflects thesubjects’ expectations and the second conveys their perceptions. Assuming that the mostmotivated evaluators of the quality of the e-services provided by the university are itsown students, it has been chosen a sample of 70 Bogdan Voda University juniors.The indicators interpretation is made according to their values: 0 meaning thesatisfactory level of the e-services and dimensions quality, the positive values indicatinga higher than expected service quality while the negative values translate into lower thanexpected service quality.quality, e-services, expectations, perceptions, users, dimensions, indicators.

On a fractional integro-differential inclusion

We study a Cauchy problem for a fractional integro-differential inclusion of order $\alpha \in (1,2]$ involving a nonconvex set-valued map. Arcwise connectedness of the solution set is provided. Also we prove that the set of selections corresponding to the solutions of the problem considered is a retract of the space of integrable functions on a given interval

On the existence of solutions for a higher order differential inclusion without convexity

We prove a Filippov type existence theorem for solutions of a higher order differential inclusion in Banach spaces with nonconvex valued right hand side by applying the contraction principle in the space of the derivatives of solutions instead of the space of solutions

From Passive to Active in the Design of External Radiotherapy Database at Oncology Institute

Implementation during 1997 of a computer network at Oncology Institute “Prof. Dr. Ion Chiricuţă" from Cluj-Napoca (OICN) opens the era of patient electronic file where the presented database is included. The database developed before 2000, used till December 2006 in all reports of OICN has collected data from primary documents as radiotherapy files. Present level of the computer network permits to change the sense of data from computer to primary document. Now the primary document is built firstly electronically inside the computer, and secondly, after validation is printed as a known document. The paper discusses the issues concerning safety, functionality and access derived

Efficient error control in 3D mesh coding

Our recently proposed wavelet-based L-infinite-constrained coding approach for meshes ensures that the maximum error between the vertex positions in the original and decoded meshes is guaranteed to be lower than a given upper bound. Instantiations of both L-2 and L-infinite coding approaches are demonstrated for MESHGRID, which is a scalable 3D object encoding system, part of MPEG-4 AFX. In this survey paper, we compare the novel L-infinite distortion estimator against the L-2 distortion estimator which is typically employed in 3D mesh coding systems. In addition, we show that, under certain conditions, the L-infinite estimator can be exploited to approximate the Hausdorff distance in real-time implementation

Controlling In-Vehicle Systems with a Commercial EEG Headset: Performance and Cognitive Load

Humans have dreamed for centuries to control their surroundings solely by the power of their minds. These aspirations have been captured by multiple science fiction creations, such as the Neuromancer novel by William Gibson or the Brainstorm cinematic movie, to name just a few. Nowadays, these dreams are slowly becoming reality due to a variety of brain-computer interfaces (BCI) that detect neural activation patterns and support the control of devices by brain signals. An important field in which BCIs are being successfully integrated is the interaction with vehicular systems. In this paper, we evaluate the performance of BCIs, more specifically a commercial electroencephalographic (EEG) headset in combination with vehicle dashboard systems, and highlight the advantages and limitations of this approach. Further, we investigate the cognitive load that drivers experience when interacting with secondary in-vehicle devices via touch controls or a BCI headset. As in-vehicle systems are increasingly versatile and complex, it becomes vital to capture the level of distraction and errors that controlling these secondary systems might introduce to the primary driving process. Our results suggest that the control with the EEG headset introduces less distraction to the driver, probably as it allows the eyes of the driver to remain focused on the road. Still, the control of the vehicle dashboard by EEG is efficient only for a limited number of functions, after which increasing the number of in-vehicle controls amplifies the detection of false commands