Results 111 to 120 of about 271,704 (310)
Assessment of the accident rate coefficient at pedestrian railway crossings
Transport TechnologiesThe object of the study is pedestrian railway crossings, which are specially designed pedestrian paths across railway tracks intended to ensure the safe passage of pedestrians over railway infrastructure, including areas outside of official level ...
Julia Lesiv, Vitalii Kovalchuk
doaj +1 more source
Level crossing in a two-photon Jaynes Cummings model * [PDF]
, 2012 In this paper, the energy spectrum of the two-photon Jaynes-Cummings model (TPJCM) is calculated exactly in the non-rotating wave approximation (non-RWA), and we study the level-crossing problem by means of fidelity.
Cong Ren Xue-Zao +3 more
core
Molecular Oncology, EarlyView.Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson +9 more
wiley +1 more source
Level-Crossing Characteristics of an Actively Managed Buffer
Journal of Sensor and Actuator NetworksIn this paper, we examine a buffer with active management that rejects packets basing on the buffer occupancy. Specifically, we derive several metrics characterizing how effectively the algorithm can prevent the queue of packets from becoming too long ...
Andrzej Chydzinski
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Molecular Oncology, EarlyView.Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen +11 more
wiley +1 more source
Research on the city tram collision at a level crossing
Advances in Mechanical Engineering, 2018 The collision simulation between a city tram and a car at a level crossing is carried out based on the multi-body dynamics. Compared with the finite element method, this method has an obvious advantage of fast computation speed, so that it is convenient ...
Hechao Zhou +3 more
doaj +1 more source
Instantaneous Frequency Estimation Using Level-Crossing Information [PDF]
, 2003 In this paper, we discuss the problem of instantaneous frequency (IF) estimation of phase signals using their level-crossing (LC) instant information.
Chandrasekhar, S, Sreenivas, TV
core
Molecular Oncology, EarlyView.Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau +36 more
wiley +1 more source
Experimental tests of vehicle body accelerations at selected road and rail crossings
MATEC Web of Conferences, 2019 Vehicles moving across the railway are exposed to the dynamic reaction of unevenness of surface on those level crossing. This significantly influences on the increase of the acceleration as well as forces values transferred to the body of the car.
Waluś Konrad J. +3 more
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Molecular Oncology, EarlyView.Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang +12 more
wiley +1 more source