Results 121 to 130 of about 2,080,475 (297)

GPatch: Patching Graph Neural Networks for Cold-Start Recommendations

, 2022
Cold start is an essential and persistent problem in recommender systems. State-of-the-art solutions rely on training hybrid models for both cold-start and existing users/items, based on the auxiliary information. Such a hybrid model would compromise the
Huang, Xiao, Chen, Hao, Huang, Feiran, Wang, Zefan, Xu, Yue   +4 more
core  

An Integrated Oxygen‐Supplying Device and Predictive Multiphysics Model for Extended Ambient Transport of Insulin‐Producing Cells

Advanced Functional Materials, EarlyView.
Cell therapies typically rely on cold‐chain logistics and cryopreservation, limiting access and compromising cell quality. Here, a dual‐chamber device separates an oxygen‐supplying chamber from a hyaluronic acid cargo chamber, sustaining oxygen delivery for over 70 h and enabling ambient‐temperature shipment.
Daniel A. Domingo‐Lopez, Ruth Tarpey, Benjamin Brennan, Bryan D. Boyle, Amir M. Alsharabasy, Abhik Mallick, Gabriella Bellavia, Abhay Pandit, Garry P. Duffy, Ruth E. Levey   +9 more
wiley   +1 more source

Optimization of Linear Loading Strategy for Fuel Cell Initiation Based on Gaussian Process Regression Model

Electrochemistry
This paper developed a one-dimensional multiphase model to analyze the cold start behavior of fuel cell, focusing on the effects of various parameters such as loading rates, maximum loading current densities, and coolant flow rates.
Jianbin SU, Shaofang LIN, Yuanxing SHEN, Lei SHI, Chenxi QIU   +4 more
doaj   +1 more source

A Holistic Platform Approach for Developing Robust Pulmonary mRNA Delivery: Integrating Novel Phenolic Acid‐Derived Ionizable Lipids and Device Engineering

Advanced Functional Materials, EarlyView.
An integrated pulmonary mRNA delivery platform combining novel biodegradable syringic acid‐derived ionizable lipids, design‐of‐experiments formulation optimization, and vibrating‐mesh nebulizer engineering enabled stable aerosolization and efficient lung delivery.
Neha Kaushal, Younan Ma, Asad Khanmohammed, Dipen Parande, Hanming Zhang, Saket Dolare, Juliet Chen, Apiwat Wangweerawong, Saswata Karmakar, Hongfeng Deng, Frank Koppenhagen, Shraddha Sharma, Eric Reyes, Sherry He, Lianne Boeglin, Caroline Woo, Azadeh Paksa, Ayed Allawzi, Anusha Dias, Gregory Troiano, Shrirang Karve, Frank DeRosa   +21 more
wiley   +1 more source

Experimental investigation on unassisted cold start of the proton exchange membrane fuel cell stack for polar coastal stations at −40 °C

Case Studies in Thermal Engineering
Hydrogen-fueled proton exchange membrane fuel cells (PEMFC) show promise for polar clean energy systems, but extremely low ambient temperatures (down to −40 °C) pose severe challenges for cold start.
Jin Wang, Zirong Yang, Guobin Zhang, Yinke Dou, Guangyu Zuo, Liwei Kou, Yu Zhang, Xinxin Wei   +7 more
doaj   +1 more source

XTRUDE: A Process‐Informed Framework for High‐Fidelity Analysis of Hydrogel Extrusion

Advanced Functional Materials, EarlyView.
Extrusion performance emerges from the interplay between material properties and processing conditions. XTRUDE (eXTrusion Rheology for Understanding and Defining Extrudability) recreates the extrusion environment with in situ pressure and temperature sensing, enabling characteristic pressure signatures to quantify extrusion‐specific phenomena and ...
Farhad Sanaei, Pascal Bertsch, Juliette Lafosse, Sander C. G. Leeuwenburgh, Mani Diba   +4 more
wiley   +1 more source

Overcoming the cold-start challenge in recommender systems: A novel two-stage framework

Open Computer Science
Cold-start recommendation helps personalize user experiences and improve the relevance of the recommendation system. Despite its importance, cold-start solutions are difficult to develop because new users and items lack interaction data, making user ...
Matam Vinay Kumar, Reddy Nooka Madhusudhana   +1 more
doaj   +1 more source

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

Advanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri, Asif Abdullah Khan, Md Fahim Al Fattah, Mahmoud Almadhoun, Shamaila Shahzadi, Aixi Pan, Md Soyaeb Hasan, Henry Wu, Arash Aghigh, Bhawna Bhawna, François Légaré, Vivek Maheshwari, Dayan Ban   +12 more
wiley   +1 more source

-30°C cold start optimization of PEMFC based on a data-driven surrogate model and multi-objective optimization algorithm

Digital Chemical Engineering
Cold start is a critical operating scenario for the proton exchange membrane fuel cell (PEMFC), particularly in the field of transportation. Under sub-freezing temperatures, the water inside the cell will freeze and obstruct gas flow paths as well as ...
Fan Zhang, Xiyuan Zhang, Bowen Wang, Haipeng Zhai, Kangcheng Wu, Zixuan Wang, Zhiming Bao, Wanli Tian, Weikang Duan, Bingfeng Zu, Zhengwei Gong, Kui Jiao   +11 more
doaj   +1 more source

Soot particle morphology and nanostructure with oxygenated fuels: A comparative study into cold-start and hot-start operation

, 2021
Soot particle morphology and nanostructure with oxygenated fuels: A comparative study into cold-start and hot-start ...
M Jafari (9889064), Svetlana Stevanovic (13096656), Y Guo (82682), E Pickering (13522675), Z Ristovski (9885230), R Brown (7931747), P Verma (11279850), Ali Zare (13059828), CG Osuagwu (15788231)   +8 more
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