Results 81 to 90 of about 258,537 (280)

METHODS AND MODELS TO RESEARCH THE VIRTUAL MANUFACTURES ORIENTED ON THE ISSUE OF HIGH-TECH PRODUCTS

open access: yesАвіаційно-космічна техніка та технологія, 2017
The problem to create the virtual manufacturing system (VMS) for the manufacture of high-tech products (aeronautics, automotive, instrumentation, etc.) is stated and solved.
Олег Евгеньевич Федорович   +2 more
doaj   +1 more source

Enumerating Segmented Patterns in Compositions and Encoding by Restricted Permutations

open access: yes, 2005
A composition of a nonnegative integer (n) is a sequence of positive integers whose sum is (n). A composition is palindromic if it is unchanged when its terms are read in reverse order.
Kitaev, Sergey   +2 more
core   +3 more sources

Acetylene terminated aspartimides and resins therefrom [PDF]

open access: yes, 1989
Acetylene terminated aspartimides are prepared using two methods. In the first, an amino-substituted aromatic acetylene is reacted with an aromatic bismaleimide in a solvent of glacial acetic acid and/or m-cresol.
Connell, John W.   +2 more
core   +1 more source

Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser

open access: yesAdvanced Science, EarlyView.
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu   +9 more
wiley   +1 more source

Transforming Grain‐Boundary Brittle Precipitates to Ductility Pathways in Complex Concentrated Alloy

open access: yesAdvanced Science, EarlyView.
By engineering graded BCC/L12 interfaces, brittle precipitates in a complex concentrated alloy enable sequential deformation, realizing gigapascal strength with >20% elongation to solve the strength‐ductility trade‐off. ABSTRACT Conventional wisdom holds that hard grain‐boundary (GB) precipitates embrittle structural alloys by acting as crack ...
Zhixin Li   +14 more
wiley   +1 more source

On the Composition and Neutrix Composition of the Delta Function with the Hyperbolic Tangent and Its Inverse Functions

open access: yesJournal of Applied Mathematics, 2011
Let F be a distribution in D' and let f be a locally summable function. The composition F(f(x)) of F and f is said to exist and be equal to the distribution h(x) if the limit of the sequence {Fn(f(x))} is equal to h(x), where Fn(x)=F(x)*δn(x) for n=1,2,…
Brian Fisher, Adem Kılıçman
doaj   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

THE INTEGER VECTOR OF OPTIMIZATION PROBLEM OF DETERMINING THE OPTIMAL COMPOSITION OF PASSENGER TRAINS

open access: yesNauka ta progres transportu, 2008
An algorithm for determination of integer solution of the task of vector optimization for convex functions is offered.
O. O. Bosov, H. M. Kodola
doaj  

Multi‐Scale Mapping of Gene Expression from Whole‐slide Images for Identifying Phenotype‐Associated Subpopulations

open access: yesAdvanced Science, EarlyView.
BiSCALE: A pathology‐driven deep learning framework for multi‐scale gene expression prediction from whole‐slide images. It accurately infers bulk and near‐cellular spot‐level expression, links predictions to clinical phenotypes, identifies disease‐associated niches, and enables applications in risk stratification and cell‐identity annotation, providing
Hailong Zheng   +8 more
wiley   +1 more source

FRACTIONAL WINDINGS HARMONIC ANALYSIS

open access: yesElectrical engineering & Electromechanics, 2013
Investigation results for multiphase windings of a united variety that includes windings with fractional and integer number of slots per pole and phase are given.
W.G. Degtev
doaj  

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