The growth of aviation traffic volume and the attempts to increase operational capacity by reducing aircraft spacing make aviation safety an urgent research issue in the aviation community. Simultaneous runway occupancy of landing aircraft is a precursor of a runway collision, and it is an effective of measure of runway landing safety. This paper presents an analytical method to evaluate the pr...

Differences in latency to the air from the same rat when stressed and unstressed were comparable to differences found when one rat was stressed and another unstressed. This observation would also suggest that the discriminable odor did not derive from a chronic stress state, but arose immediately from a given stressing. Neither can the discrimination be reasonably attributed to greater familiar...

Due to the air traffic growth tendencies around the world, capacity problems have been emerging among different elements within the system, but perhaps one of the most visible and expensive is the air traffic congestion. Therefore, innovative methodologies to tackle it have been developing. Special attention has been centering at the terminal maneuvering area which is perhaps one of the most co...

guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. in this study automatic landing control systems are introduced and an optimal landing control system is designed. the control system performance criteria are based on minimum control effort. the designed system is simulated for a tr...

Managing operations of the aircraft approach process and analyzing runway landing capacity, utilization and related risks require detailed insight into the stochastic characteristics of the process. These characteristics can be represented by probability distributions. The focus of this study is analyzing landings on a runway operating independent of other runways making it as a single runway. ...

Guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. In this study automatic landing control systems are introduced and an optimal landing control system is designed. The control system performance criteria are based on minimum control effort. The designed system is simulated for a tr...

The airline industry has been changed significantly after the September 11 of 2001, while delay and congestion at airport have been consistently a problem to passengers, airlines and airports since the last decade of the 20 century. Most of previous methods to reduce airport delay and congestion mainly focus on airport capacity expansion through building new runways, which incurs billions of do...

CONTEXT Rapid deceleration during sporting activities, such as landing from a jump, has been identified as a common mechanism of acute knee injury. Research into the role of potential sex differences in hip abductor function with lower extremity kinematics when landing from a jump is limited. OBJECTIVE To evaluate sex differences in hip abductor function in relation to lower extremity landing...

purpose: this study aimed to examine the differences in the co-activation of the rectus femoris (rf) and biceps femoris (bf) using the co-contraction index (ci) in aquatic and land environments during a drop-landing task in active and non-active females. methods: in this casual-comparison study, 10 active and 10 non-active females volunteered to participate. the ci was calculated from recorded ...

abstract introduction: identifying factors which cause the high incidence of acl is of great importance .the anterior shear forces are the primary mechanism of load sustained on the acl. during exercise, the activity of muscles and position of lower limbs may increase or decrease the anterior shear force. the purpose of this study is to investigate the relationship between the activity level of...