A thinking framework in the form of an actionable kernel.

Proton and fluorine magnetic resonance spectra have been observed in 12 liquid polysubstituted ethanes over temperature ranges of 250° to 450°K. In each these compounds, reorientations about the C–C bond are fast enough yield high resolution NMR which averages three rotational isomers. The change proportions isomers with is large for CHCl2CHCl2, CHCl2CHF2, CF2ClCFCl2, CHCl2CHFCl, CF2BrCFBrCl, also CFCl2CHCl2 〈JHF〉 has reported, permit a least-squares type analysis averaged shifts 〈v〉...

Certain properties of crystalline polymers can be associated with the presence local defects, e.g., deviations short segments chain from predominant conformation allied crystal structure. General methods are developed by which such defects may simulated computer techniques. The application these to polyethylene system gives detailed information concerning: stable defect structures, low-energy conversion paths between structures (molecular motions), interactions in assemblies, and...

Everyone who develops software knows that it is a complex and risky business, its participants are always on the lookout for new ideas will lead to better software. Fortunately, engineering still young growing profession sees innovations improvements in best practices every year. Just look, example, at benefits lean agile thinking have brought software-development teams.

The absorption of infrared radiation by methanol vapor in the region 3200 to 3800 cm-1 has been studied at 305° and 335°K as a function density. results best correlate with model that is composed monomer, dimer, tetramer, little or no trimer present. heat dissociation dimer found be approximately 3 kcal/mole, tetramer 17 kcal/mole. greater stability compared consistent cyclic structure for tetramer.

Nowadays, huge amounts of data have been captured along with the day-to-day operation assets including railway systems. Hence, we come to era big data. The utilization technologies for asset condition information management is becoming indispensable improving decision making. vital such as precursor collected on failure modes and knowledge that may be available analysis hidden within large extent There are tools incorporated techniques multiple regression machine learning facilitated by...

The proton-proton coupling constant, AHH′, in H–C–C′–H′ groups is known to depend upon the dihedral angle, φ. Previous valence-bond calculations by Karplus have given result that AHH′≅A0cos2φ+B.This relation used estimate effects average constant of torsional vibrations and reorientations about C–C′ bond. For substituted ethanes, it found produce a modest temperature dependence, opposite sign for trans gauche coupling. However, molecules which potential function, V(φ), has threefold...

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This paper shows how Scrum project management practice can be described using Essence kernel and language which has recently been adopted as an official Object Management Group standard for creating enacting software engineering methods. Practical benefits of a common foundation defining practices are demonstrated. These practical include the ability to compare practices, assess potential gaps, make needed improvements, assemble select into coherent method benefit team. In addition, by...

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The collection of reliable and high-quality data is seen as a prerequisite for effective efficient rail infrastructure rolling stock asset management to meet the requirements owners service providers. In this paper, importance recovering missing information in railway highlighted, advanced models algorithms that have been applied missed are analyzed discussed. Through making comparisons among these algorithms, procedure proposed guide selecting appropriate based on different scenarios. Using...

The first page of this article is displayed as the abstract.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew Rotational States for ParaffinsR. L. McCullough and P. E. McMahonCite this: J. Phys. Chem. 1965, 69, 5, 1747–1749Publication Date (Print):May 1, 1965Publication History Published online1 May 2002Published inissue 1 1965https://pubs.acs.org/doi/10.1021/j100889a506https://doi.org/10.1021/j100889a506research-articleACS PublicationsRequest reuse permissionsArticle Views16Altmetric-Citations11LEARN ABOUT THESE METRICSArticle Views are the...