Results 21 to 30 of about 57,161 (165)

Parameter estimation and wobbling behavior reproduction in lean-operable bicycle simulator

open access: yesNihon Kikai Gakkai ronbunshu
Bicycles are regarded as one of the major risk factors for vehicles. In particular, the behavior prediction of bicycle would be a critical issue for design of autonomous driving system.
Ryo WAKISAKA   +4 more
doaj   +1 more source

Bicycle patrols: an underutilized resource [PDF]

open access: yes, 2008
Foundational research on police use of bicycles for patrol. A participant/observation research design was used. A five-city, 32-shift study on the output of police bicycle patrols was conducted. Same and similar ride-alongs were conducted with bicycle
Menton, Chris
core   +2 more sources

Generating varied narrative probability exercises [PDF]

open access: yes, 2011
This paper presents Genpex, a system for automatic generation of narrative probability exercises. Generation of exercises in Genpex is done in two steps. First, the system creates a specification of a solvable probability problem, based on input from the
Akker, Rieks op den   +3 more
core   +1 more source

Sulfur‐Directed Construction of Vinyl Cyclopropanes from 1,3‐Dienes

open access: yesAngewandte Chemie International Edition, EarlyView.
Sulfur takes control. A pending thioether acts as a molecular compass, directing carbene addition to the 1,3‐diene scaffold with exceptional regio‑ and diastereocontrol to forge sulfur‐substituted vinyl cyclopropanes (S‐VCPs) — molecular architectures inaccessible via conventional cyclopropanation strategies.
Anna Keimer   +6 more
wiley   +1 more source

Elliptic Fourier analysis as a tool for the taxonomic identification of isolated theropod pedal phalanges

open access: yesThe Anatomical Record, EarlyView.
Abstract Studies of Upper Cretaceous deposits in North America have provided invaluable insights into the continental ecosystems of this time. Theropod (Saurischia, Dinosauria) pedal phalanges are commonplace in these deposits but can be difficult to identify at a finer taxonomic resolution.
Trystan M. Warnock‐Juteau   +2 more
wiley   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

open access: yesChemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve   +4 more
wiley   +1 more source

Sustainable Synthesis of 4,7‐Dihydro‐4,7‐ethano‐2H‐isoindoles—Key Building Blocks to Benzoporphyrins

open access: yesChemistry – A European Journal, EarlyView.
A facile and sustainable route to isoindole derivatives—key benzoporphyrin precursors—brings high‐ and low‐symmetry benzoporphyrins closer to practical application. ABSTRACT Benzoporphyrins, π extended porphyrin analogues, exhibit remarkable potential for optoelectronic and theragnostic applications, yet have remained largely confined to fundamental ...
Lampros Pascal Gazetas   +5 more
wiley   +1 more source

Alkali‐Metal Base Catalyzed Electrocyclization of Isoprene Derivatives

open access: yesChemistry – A European Journal, EarlyView.
Simple and abundant alkali‐metal base catalysis in combination with Lewis basic polyamines enables the electrocyclization of isoprene‐derived trienes to cycloheptadienes under neat conditions. Mechanistic insight supported by DFT guides a scalable route to seven‐membered carbocycles which, after reduction, give saturated cycloalkanes relevant as ...
Mikaël Le Roch   +3 more
wiley   +1 more source

Design and evaluation of a standalone electric vehicles charging station for a university campus in Argentina

open access: yesInternational Journal of Renewable Energy Development
The increasing popularity of electric vehicles in recent years has led to a growing demand for charging stations. In this context, universities are an ideal setting for their installation, as they have a large number of students, professors, and staff ...
Juan Pablo Cecchini   +4 more
doaj   +1 more source

Encouraging Sustainable Urban Access: An Exploratory Student Approach to Design of Product Service Systems [PDF]

open access: yes, 2013
Urban access is a key trans-disciplinary design axiom looking to ensure that every member of the society can reach those locations and resources one needs for a sustainable standard of living and productivity.
Karjalainen, Toni-Matti   +2 more
core  

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