Results 241 to 250 of about 31,731,292 (314)

Three-dimensional cooperative guidance law to control impact time and angle with fixed-time convergence

Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering, 2022
This article proposes a new terminal cooperative guidance law to control both impact time and impact angle in three-dimensional engagement. The presented guidance law employs on and normal line-of-sight accelerations to control the impact time and angle ...
Hong-Xia Li, Huijie Li, Yuan-li Cai
semanticscholar   +1 more source

‘Pressed for Time’ – the Differential Impacts of a ‘Time Squeeze’

The Sociological Review, 2005
The ‘time squeeze’ is a phrase often used to describe contemporary concerns about a shortage of time and an acceleration of the pace of daily life. This paper reviews analysis of the Health and Lifestyle Survey (HALS), 1985 and 1992, and draws upon in-depth semi-structured interviews conducted with twenty British suburban households, in order to shed ...
Southerton, Dale, Tomlinson, Mark
openaire   +2 more sources

On the perception of time: experiential impact

IEEE Transactions on Systems, Man, and Cybernetics - Part A: Systems and Humans, 2002
"I don't believe it: another year has flown by-it seems that time is going by at an ever-faster rate." This often-expressed perception of time, actually the speed of time, is both qualitatively and quantitatively explored herein. While the speed of time is clearly invariant (at least on earth and at speeds that are orders of magnitude below the speed ...
James M. Tien, James P. Burnes
openaire   +1 more source

Field-of-View Constrained Impact Time Guidance Against Stationary Targets

IEEE Transactions on Aerospace and Electronic Systems, 2021
This article proposes a guidance strategy that enables the interceptor to control its impact time against stationary targets, while also meeting the field-of-view (FOV) constraints of the on-board seeker.
Dwaipayan Mukherjee, S. R. Kumar
semanticscholar   +1 more source

Rethinking time: ubichronic time and its impact on work

European Journal of Information Systems, 2021
Modern technology is ubiquitous i.e., “always there” – available to us when we want it and engaging us even when we don’t actively seek it.
Ivaturi, Koteswara, Chua, Cecil
openaire   +2 more sources

Impact time constrained integrated guidance and control design

, 2021
This paper proposes integrated guidance and control design to intercept a target, which may execute various motions, at a pre-specified time of interception.
Abhinav Sinha, S. R. Kumar, Dwaipayan Mukherjee   +2 more
semanticscholar   +1 more source

Three-Dimensional Nonsingular Impact Time Guidance With Limited Field-of-View

IEEE Transactions on Control Systems Technology, 2021
This article proposes barrier Lyapunov function-based guidance strategies to achieve target interception, by a seeker-equipped interceptor having a limited field-of-view (FOV), at a prespecified impact time. A novel approach to respect the FOV constraint,
S. R. Kumar, Dwaipayan Mukherjee
semanticscholar   +1 more source

Neuronavigation – Impact on Operating Time

Stereotactic and Functional Neurosurgery, 1998
It is uncertain whether the use of imaggguided surgery has an influence on operating time. We prospectively studied the time requirements which have to be invested for using image-guided surgery and performed a comparison of operating room times from 125 matched pairs of image-guided and conventional operations.
O, Alberti, N L, Dorward, N D, Kitchen, D G, Thomas   +3 more
openaire   +2 more sources

The impact of time on the session problem

Proceedings of the eleventh annual ACM symposium on Principles of distributed computing - PODC '92, 1992
The session problem is an abstraction of synchronization problems in distributed systems. It has been used as a test-case to demonstrate the differences in the time needed to solve problems in various timing models, for both shared memory (SM) systems [2] and message-passing (MP) systems [4].
Injong Rhee, Jennifer L. Welch
openaire   +1 more source

Three-dimensional suboptimal nonlinear impact time guidance against non-maneuvering target

, 2021
In this paper, a nonlinear suboptimal three-dimensional guidance strategy based on a finite-time state-dependent Riccati equation technique is proposed to achieve interception of a non-maneuvering target at a desired impact time.
Rohit V. Nanavati, S. R. Kumar, Arnab Maity   +2 more
semanticscholar   +1 more source