Results 81 to 90 of about 154,045 (307)

Of Hearths and Houses [PDF]

open access: yes, 1996
During the 1993 East Texas Archeological Field School conducted at the Tyson site (41SY92) in western Shelby County, the junior author had an opportunity to participate in the excavation of a Caddoan hearth.
Middlebrook, Ryan, Middlebrook, Tom
core   +1 more source

Planarization and fabrication of bridges across deep groves or holes in silicon using a dry film photoresist followed by an etch back [PDF]

open access: yes, 1994
A technique is presented that provides planarization after a very deep etching step in silicon. This offers the possibility for not only resist spinning and layer patterning but also for realization of bridges and cantilevers across deep grooves or holes.
Berenschot, J.W.   +2 more
core   +3 more sources

Efficient Process Development for Laser Powder Bed Fusion of a Soft‐Magnetic Metallic Glass Composite

open access: yesAdvanced Engineering Materials, EarlyView.
Iron‐based metallic glass alloys exhibit excellent soft‐magnetic properties, and unprecedented geometrical freedom in the design of soft‐magnetic metallic glass components is made possible by additive manufacturing. An efficient workflow for developing parameters for laser‐based powder bed fusion of a Fe‐based metallic glass alloy is presented along ...
Julia Löfstrand   +7 more
wiley   +1 more source

Evaluation of Information Security of Deep Foundation Pit Reinforcement Scheme

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract The purpose of deep foundation pit support is to protect the safety of the underground structure and the surrounding environment. This article introduces the reinforcement measures of the deep foundation pit supporting structure in combination with a deep foundation pit on the Huzhou-Hangzhou line; from the material and ...
Xiaoling He, Chunjie Xu, Fang Guo
openaire   +1 more source

Rethinking the Discount Factor in Reinforcement Learning: A Decision Theoretic Approach

open access: yes, 2019
Reinforcement learning (RL) agents have traditionally been tasked with maximizing the value function of a Markov decision process (MDP), either in continuous settings, with fixed discount factor $\gamma < 1$, or in episodic settings, with $\gamma = 1 ...
Pitis, Silviu
core   +1 more source

Progress on Polynomial Identity Testing - II [PDF]

open access: yes, 2014
We survey the area of algebraic complexity theory; with the focus being on the problem of polynomial identity testing (PIT). We discuss the key ideas that have gone into the results of the last few years.Comment: 17 pages, 1 figure ...
Saxena, Nitin
core   +2 more sources

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert   +7 more
wiley   +1 more source

Stress and Deformation Analysis of Green Prefabricated Slope Surface Protection Structure for Deep and Large Foundation Pit

open access: yesChengshi guidao jiaotong yanjiu
Objective Excavation of deep and big foundation pit destroys the equilibrium state of the original stress field in the soil, leading to ground deformation.
ZHONG Lichao   +6 more
doaj   +1 more source

Rheocasting versus Die Casting: An Insight into the Low‐Cycle Fatigue Behavior of AlSi7Mg0.6

open access: yesAdvanced Engineering Materials, EarlyView.
The study compares rheocast lightweight components with high‐pressure die cast materials regarding microstructure and fatigue behavior. Rheocast process offers higher efficiency due to lower casting temperatures. Despite some microstructural differences, both processes show similar strengths (yield strength 125 MPa, tensile strength 240 MPa).
Julia Richter   +4 more
wiley   +1 more source

Interaction Analysis of the Synchronous Excavations of Deep Foundation Pit and Adjacent Underground Channel

open access: yesBuildings
Based on FLAC3D finite element analysis and field measurements, this paper studies the synchronous excavation of the deep foundation pit and the adjacent underground channel in the 17th section of the Beijing Metro Line 10 Phase II project.
Hai Zhong   +4 more
doaj   +1 more source

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