- document
-
Zhan, Shuguang (author), Xie, Jiemin (author), Wong, S. C. (author), Zhu, Y. (author), Corman, Francesco (author)External and internal factors can cause disturbances or disruptions in daily train operations, leading to deviations from official timetables and passenger delays. As a result, efficient train timetable rescheduling (TTR) methods are necessary to restore disrupted train services. Although TTR has been a popular research topic in recent years,...journal article 2024
- document
-
Steens, Jurre A. (author), Zhu, Y. (author), Taylor, David W. (author), Bravo, Jack P.K. (author), Prinsen, Stijn H.P. (author), Schoen, Cor D. (author), Keijser, Bart J.F. (author), Ossendrijver, Michel (author), Brouns, S.J.J. (author)Characteristic properties of type III CRISPR-Cas systems include recognition of target RNA and the subsequent induction of a multifaceted immune response. This involves sequence-specific cleavage of the target RNA and production of cyclic oligoadenylate (cOA) molecules. Here we report that an exposed seed region at the 3′ end of the crRNA is...journal article 2021
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author)Unexpected disruptions occur in the railways on a daily basis, which are typically handled manually by experienced traffic controllers with the support of predefined contingency plans. When several disruptions occur simultaneously, it is rather hard for traffic controllers to make rescheduling decisions, because (1) the predefined contingency...journal article 2021
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author)Unexpected disruptions occur frequently in the railways, during which many train services cannot run as scheduled. This paper deals with timetable rescheduling during such disruptions, particularly in the case where all tracks between two stations are blocked for hours. In practice, a disruption may become shorter or longer than predicted. To...journal article 2020
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author)During railway disruptions, most passengers may not be able to find preferred alternative train services due to the current way of handling disruptions that does not take passenger responses into account. To offer better alternatives to passengers, this paper proposes a novel passenger-oriented timetable rescheduling model, which integrates...journal article 2020
- document
-
Zhu, Y. (author), Wang, H. (author), Goverde, R.M.P. (author)Real-time railway traffic management is important for the daily operations of railway systems. It predicts and resolves operational conflicts caused by events like excessive passenger boardings/alightings. Traditional optimization methods for this problem are restricted by the size of the problem instances. Therefore, this paper proposes a...conference paper 2020
- document
-
Zhu, Y. (author)Railway systems are vulnerable to unexpected disruptions, which usually result in track blockages for a few hours. In practice, disruptions are handled manually and the resulting impact to passengers is rarely considered. To enable disruption management more efficiently, operator-friendly and passenger-friendly, this thesis develops mathematical...doctoral thesis 2019
- document
-
Zhu, Y. (author)Experience prediction is one key component in today’s multimedia delivery. Knowing user’s viewing experience allows online video service providers (e.g., Netflix, YouTube) to create value for their customers by providing personalized content and service. However, individual experience prediction is a challenging problem since viewing experience ...doctoral thesis 2019
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author)Unexpected disruptions occur frequently in railway systems, during which many train services cannot run as scheduled. This paper deals with timetable rescheduling during such disruptions, particularly in the case where all tracks between two stations are blocked for a few hours. In practice, the disruption length is uncertain, and a disruption...conference paper 2019
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author)Passenger assignment models for major disruptions that require trains to be<br/>cancelled/short-turned in railway systems are rarely considered in literature, although these models could make a significant contribution to passenger-oriented disruption timetable design/rescheduling. This paper proposes a dynamic passenger assignment model, where...journal article 2019
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author), Quaglietta, E. (author)Unexpected disruptions occur in the railways on a daily basis, which are<br/>typically handled manually by experienced trac controllers with the support of<br/>predened contingency plans. When several disruptions occur simultaneously, it is<br/>rather hard for trac controllers to make trac management decisions, because 1)<br/>the predened...conference paper 2018
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author)The issue of disruptions in railway systems attracts a growing attention due to its severity to the society. Mitigation strategies are proposed from different perspectives to reduce the system vulnerability resulting by disruptions. However, due to financial limitations, it is not realistic to realize all strategies in the real world. Thus, it...conference paper 2017
- document
-
Zhu, Y. (author), Goverde, R.M.P. (author)Passenger-oriented rescheduling problems receive increasing attention. However, the passenger assignment models used for evaluating the rescheduling solutions are usually simplified by many assumptions. To estimate passenger inconvenience more accurately, this paper establishes a dynamic passenger assignment model during disruptions, in which...conference paper 2017
- document
-
Zhu, Y. (author), Peng, M. (author), Shi, Z. (author), Zhang, L. (author)The 2008 Mw 7.9 Wenchuan earthquake triggered at least 257 landslide dams, most of which formed in series along rivers. The failure of an upstream dam could cause the failure of dams downstream one after another. The cascade dam breaching may result in sharp increase of flood and more serious damage downstream. This paper aims to analyze the...conference paper 2015
- document
-
Cisotto, L. (author), Zhu, Y. (author), Pereira, S.F. (author), Urbach, H.P. (author)Finding a fast and precise method to measure the side-wall angle of periodic (or non-periodic) structures is still a very challenging problem in lithographic applications. For this reason, over the years, many techniques have been proposed to circumvent this limitation, with the final goal to give the most precise geometrical description of...conference paper 2015
- document
-
Zhu, Y. (author), Heynderickx, I.E.J.R. (author), Hanjalic, A. (author), Redi, J.A. (author)Recently, a lot of effort has been devoted to estimating the Quality of Visual Experience (QoVE) in order to optimize video delivery to the user. For many decades, existing objective metrics mainly focused on estimating the perceived quality of a video, i.e., the extent to which artifacts due to e.g. compression disrupt the appearance of the...conference paper 2015
- document
-
Zhu, Y. (author), Heynderickx, I. (author), Redi, J.A. (author)In the past decades, a lot of effort has been invested in predicting the users’ Quality of Visual Experience (QoVE) in order to optimize online video delivery. So far, the objective approaches to measure QoVE have been mainly based on an estimation of the visibility of artifacts generated by signal impairments at the moment of delivery and on a...conference paper 2014
- document
-
Zhu, Y. (author), Visser, P.J. (author), Vrijling, J.K. (author), Wang, G.Q. (author)Breaching of embankments has recently drawn more and more attention due to its importance in the development of early warning systems for embankment failures, in the evacuation plans of people at risk, in the design method of embankments based on a risk-approach, etc. The erosion process observed during embankment breaching tests in the...journal article 2011
- document
-
Wagner, K.E. (author), Morosan, E. (author), Hor, Y.S. (author), Tao, J. (author), Zhu, Y. (author), Sanders, T. (author), McQueen, T.M. (author), Zandbergen, H.W. (author), Williams, A.J. (author), West, D.V. (author), Cava, R.J. (author)We report the characterization of layered 2H-type CuxTaS2 for 0?x?0.12. The charge density wave (CDW), at 70 K for TaS2, is destabilized with Cu doping. The sub-1 K superconducting transition in undoped 2H-TaS2 jumps quickly to 2.5 K at low x, increases to 4.5 K at the optimal composition Cu0.04TaS2, and then decreases at higher x. The...journal article 2008
- document
-
Zhu, Y. (author)Numerous flood disasters occur every year worldwide, mostly resulting from failure of dikes, some with catastrophic outcomes. Examples are the dike failures along the Yangtze River in China in 1931 due to heavy rainstorms and those in the Netherlands in 1953 due to a storm surge at the North Sea. Both floods induced many deaths and enormous...doctoral thesis 2006