Results 61 to 70 of about 22,809,596 (368)

Spatially Resolved Multiomics Reveals Metabolic Remodeling and Autophagy Activation in Adamantinomatous Craniopharyngiomas

open access: yesAdvanced Science, EarlyView.
Multiomics integration analysis reveals the “cystic fluid–tumor cell” metabolic coupling that mediates active choline/ethanolamine uptake of tumor cells from cystic fluid and PC/PE synthesis pathways reprogramming that mediating autophagy pathway activation within ACP. ABSTRACT Adamantinomatous craniopharyngioma (ACP), a benign yet highly recurrent and
Dongting Chen   +9 more
wiley   +1 more source

Specific cost ratio in a port modelling by M/Ek/1 queue [PDF]

open access: yesFME Transactions, 2018
The notion of specific cost ratio involves different type of costs of a ship and a port modeled as a queueing system. Using the known general formula for the specific cost ratio of arbitrary port queueing system (denoted as R), here we derive the related
Dragović Branislav   +3 more
doaj  

A Spoonful of Math Helps the Medicine Go Down: An Illustration of How Healthcare can Benefit from Mathematical Modeling and Analysis

open access: yesBMC Medical Research Methodology, 2010
Objectives A recent joint report from the Institute of Medicine and the National Academy of Engineering, highlights the benefits of--indeed, the need for--mathematical analysis of healthcare delivery.
Ziya Serhan   +2 more
doaj   +1 more source

Analysis of Discrete-Time Queues with Branching Arrivals

open access: yesMathematics, 2023
We consider a discrete-time single server queueing system, where arrivals stem from a multi-type Galton–Watson branching process with migration. This branching-type arrival process exhibits intricate correlation, and the performance of the corresponding ...
Dieter Fiems, Koen De Turck
doaj   +1 more source

An M/M/2 Queueing System with Heterogeneous Servers Including One with Working Vacation

open access: yes, 2012
This paper analyzes an queueing system with two heterogeneous servers, one of which is always available but the other goes on vacation in the absence of customers waiting for service.
A. Krishnamoorthy, C. Sreenivasan
semanticscholar   +1 more source

Analog Signal Summation for Reinforcement Learning via Simultaneous Light–Voltage Modulation in a Synaptic Device

open access: yesAdvanced Science, EarlyView.
To overcome limitations of conventional AI hardware, a light‐voltage dual‐modulating synaptic (LVDS) transistor using an IGZO/InAs quantum dot hybrid structure is proposed. LVDS transistor enables analog summation for Dueling Deep Q‐Networks by independently modulating memory via optical and electrical stimuli.
Dong Gue Roe   +10 more
wiley   +1 more source

A Discrete-Time Geo/G/1 Retrial Queue with J Vacations and Two Types of Breakdowns

open access: yesJournal of Applied Mathematics, 2013
This paper is concerned with a discrete-time Geo/G/1 retrial queueing model with J vacations and two types of breakdowns. If the orbit is empty, the server takes at most J vacations repeatedly until at least one customer appears in the orbit upon ...
Feng Zhang, Zhifeng Zhu
doaj   +1 more source

Towards a System Theoretic Approach to Wireless Network Capacity in Finite Time and Space [PDF]

open access: yes, 2013
In asymptotic regimes, both in time and space (network size), the derivation of network capacity results is grossly simplified by brushing aside queueing behavior in non-Jackson networks.
Ciucu, Florin   +4 more
core   +2 more sources

FINITE TWO LAYERED QUEUEING SYSTEMS [PDF]

open access: yesProbability in the Engineering and Informational Sciences, 2016
We study layered queueing systems comprised two interlacing finite M/M/• type queues, where users of each layer are the servers of the other layer. Examples can be found in file sharing programs, SETI@home project, etc. Let Li denote the number of users in layer i, i=1, 2. We consider the following operating modes: (i) All users present in layer i join
Perel, Efrat, Yechiali, Uri
openaire   +1 more source

Interface Engineering Suppresses Self‐Annealing in Electroplated Nanograined Copper for Low‐Temperature Copper‐to‐Copper Bonding

open access: yesAdvanced Science, EarlyView.
A (111)‐oriented nanotwinned copper substrate stabilizes the deposited nanograined copper and prevents self‐annealing by restricting grain boundary motion at the interface and promoting the formation of stacking faults within the nanograined copper. Its preserved nanostructure maintains bonding capability even after 30 days of storage, resulting in ...
Gangqiang Peng   +17 more
wiley   +1 more source

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