Bu çal??mada, ?stanbul ve Çanakkale Bo?azlar?ndan geçen gemilerin tiplerine y?llara göre da??l?mlar?, k?lavuz alan oranlar?, kazalar geçi? için bekleme süreleri incelenmi?tir. Elde edilen bulgular, 2006-2020 y?llar? aras?nda gemi say?lar?n?n tedrici olarak azald???n? göstermektedir. Gemi aksine, her iki bo?azdan da toplam tonajlar? artm??t?r. Gerek gerekse Bo?az?’ndan 2010 y?l?ndan sonra 200 m’...

On a multi-lane roadway, systematic lane-changes can seriously disrupt traffic flow and cause capacity reductions. Therefore it is important to understand the characteristics of lanechanging traffic flow. In our previous study, a new variable, lane-changing intensity, was theoretically derived by doubling the contribution to the total density of a lane-changing vehicle during its lane-changing ...

Abstract: This paper studies the asymptotic behavior of the steady-state waiting time, W∞, of the M/G/1 queue with subexponenential processing times for different combinations of traffic intensities and overflow levels. In particular, we provide insights into the regions of large deviations where the so-called heavy traffic approximation and heavy tail asymptotic hold. For queues whose service ...

BACKGROUND The introduction of large-scale out-of-hours GP cooperatives has led to questions about increased distances between the GP cooperatives and the homes of patients and the increasing waiting times for home visits in urgent cases. We studied the relationship between the patient's waiting time for a home visit and the distance to the GP cooperative. Further, we investigated if other fact...

T exact distribution of the nth customer’s sojourn time in an M/M/s queue with k customers initially present is derived. Algorithms for computing the covariance between sojourn times for an M/M/1 queue with k customers present at time 0 are also developed. Maple computer code is developed for practical application of transient queue analysis for many system measures of performance without regar...

OBJECTIVE To evaluate the association of different indices of traffic-related air pollution (self-report of traffic intensity, distance from busy roads from geographical information system (GIS), area-based emissions of particulate matter (PM), and estimated concentrations of nitrogen dioxide (NO(2)) from a land-use regression model) with respiratory health in adults. METHODS A sample of 9488...

— A method for protecting an Internet server against a bandwidth-consuming DDoS attack is proposed and analyzed. Incoming traffic is monitored continuously and " dangerous " traffic intensity rises are detected. Such an event activates a traffic filtering rule which pushes down the incoming aggregate traffic to an acceptable level by discarding excess packets according to the measured relative ...