Sequence Mining and Pattern Analysis in Drilling Reports with Deep Natural Language Processing

Drilling activities in the oil and gas industry have been reported over decades for thousands of wells on a daily basis, yet the analysis of this text at large-scale for information retrieval, sequence mining, and pattern analysis is very challenging. Drilling reports contain interpretations written by drillers from noting measurements in downhole sensors and surface equipment, and can be used for operation optimization and accident mitigation. In this initial work, a methodology is proposed for automatic classification of sentences written in drilling reports into three relevant labels (EVENT, SYMPTOM and ACTION) for hundreds of wells in an actual field. Some of the main challenges in the text corpus were overcome, which include the high frequency of technical symbols, mistyping/abbreviation of technical terms, and the presence of incomplete sentences in the drilling reports. We obtain state-of-the-art classification accuracy within this technical language and illustrate advanced queries enabled by the tool.Comment: 7 pages, 14 figures, technical repor

An Explicit Method for the Split Feasibility Problem with Self-Adaptive Step Sizes

An explicit iterative method with self-adaptive step-sizes for solving the split feasibility problem is presented. Strong convergence theorem is provided

Asymmetric synthesis involving silicon

Several different types of optically active, synthetically useful, silylated diols (17 pairs) have been prepared by asymmetric dihydroxylation of the corresponding allyl and vinylsilanes using Sharpless catalysts. Chiral analysis of these silyl diols was carried out by 1H NMR methods in the presence of Eu(hfc)3. Enantiomeric purity of some of these silyl diols is greater than 90% e.e. Synthetically more useful, optically active trimethylsilylepoxides, trimethylsilyl amino alcohols and aziridines have been isolated by a multi-stage chirality transfer from their precursor diol involving no racemization. The main routes for these chirality transfers were via silylated cyclic sulphite or sulphate intermediates and via silylated cyclic ortho esters and halohydrin derivatives. The reactions of these silylated species can be very regioselective, such as the ring opening of epoxysilanes by azide ion, leading exclusively to a single regioisomer. Similarly, the deoxygenation of vicinal silyl diols has been observed without loss of the silyl group. Chiral analysis of trimethylsilyl amino alcohols and aziridines (with enantiomeric excesses of up to 95%) have been carried out by 13C NMR methods in the presence of Eu(hfc)3. Asymmetric epoxidation of allyl and vinylsilanes without polar groups have been investigated using manganese (III) salen complexes as a catalyst. A number of axial ligands of the salen complexes has been studied and some of these axial ligands were very effective to influence the reactivity of the catalyst, cis / trans ratio of the silyl epoxides and enantioselectivity of the epoxidation. Several different types of allyl and vinylsilanes have been epoxidized enantiomerically using this catalytic method. Enantiomeric excesses of epoxides were determined by Chiradex G-PN column. Some of these silyl epoxides had e. e. of greater than 95%

Jan Nordby Gretlund, ed., Still in Print: The Southern Novel Today.

A collection of eighteen essays addressing novels written by southern writers between 1997 and 2009, this volume aims to inform readers about contemporary novels that deserve to be kept in print. The essays have been written by both American and European scholars and each essay focuses on one novel and includes a brief biographical sketch of the author and an extensive bibliography for those who want to read more fiction by this author. The contemporary southern writers included in the collec..

The secret language of destiny: stress imprinting and transgenerational origins of disease

Epigenetic regulation modulates gene expression without altering the DNA sequence to facilitate rapid adjustments to dynamically changing environmental conditions. The formation of an epigenetic memory allows passing on this information to subsequent generations. Here we propose that epigenetic memories formed by adverse environmental conditions and stress represent a critical determinant of health and disease in the F3 generation and beyond. Transgenerational programming of epigenetic regulation may represent a key to understand adult-onset complex disease pathogenesis and cumulative effects of life span and familial disease etiology. Ultimately, the mechanisms of generating an epigenetic memory may become of potentially promising diagnostic and therapeutic relevance due to their reversible nature. Exploring the role of environmental factors, such as stress, in causing variations in epigenetic profiles may lead to new avenues of personalized, preventive medicine based on epigenetic signatures and interventions

A Comparative Study Between the Dark Triad of Personality and the Big Five

The “Dark Triad”, a constellation of three conceptually distinct but showing close correlates socially aversive personality variables, consisting of three triad members: Machiavellianism, narcissism and subclinical psychopathy, is an important research achievement in the area of the dark side of personality. This paper is to compare the rapidly expanding Dark Triad of personality and the popular Big Five Model, analyzing the complementarity in the theoretical field and the relationship between organizational behavior and personality trait in the empirical field. Future research should strengthen the research of the dark side of personality like Dark Triad, explore the role of situational variables and focus on negative and positive effects of personality traits

Innovation and Optimization of Physical Education Senior High School Examination Based on Digital Transformation: Path, Mechanism and Practice

With the rapid development of digital technology, physical education is ushering in an unprecedented digital transformation. In the physical education high school examination, digital transformation can not only improve the efficiency and accuracy of the examination, but also provide a more fair and just evaluation environment for students. From the perspective of digital transformation, this paper discusses the path, mechanism and practice of innovation and optimization in the evaluation of middle school physical education examination. It aims to provide theoretical and practical support for digital transformation in physical education assessment, and promote the effective integration of modern technology and physical education

The Effects of Transformational Leadership on Employee’s Pro-social Rule Breaking

The construct of pro-social rule breaking occupies an important, but largely neglected position within exi-sting frameworks of organizational deviance Pro-social rule breaking (PSRB) is a form of constructive de-viance characterized by volitional rule breaking in the interest of the organization or its stakeholders.Usi-ng survey data collected from 252 employees in different organizations in China,the researchers empirically examines the relationship between transformational leadership and employee’s pro-social rule breaking and the mediating role of job autonomy. Results indicate that transformational leadership is positively rel-ated to pro-social rule breaking,job autonomy fully mediates the relationships between transformational le-adership and employee’s pro-social rule breaking. Theoretical and practical implications are discussed. A set of future research directions are offered

III/V-on-Si MQW lasers by using a novel photonic integration method of regrowth on a bonding template.

Silicon photonics is becoming a mainstream data-transmission solution for next-generation data centers, high-performance computers, and many emerging applications. The inefficiency of light emission in silicon still requires the integration of a III/V laser chip or optical gain materials onto a silicon substrate. A number of integration approaches, including flip-chip bonding, molecule or polymer wafer bonding, and monolithic III/V epitaxy, have been extensively explored in the past decade. Here, we demonstrate a novel photonic integration method of epitaxial regrowth of III/V on a III/V-on-SOI bonding template to realize heterogeneous lasers on silicon. This method decouples the correlated root causes, i.e., lattice, thermal, and domain mismatches, which are all responsible for a large number of detrimental dislocations in the heteroepitaxy process. The grown multi-quantum well vertical p-i-n diode laser structure shows a significantly low dislocation density of 9.5 × 104 cm-2, two orders of magnitude lower than the state-of-the-art conventional monolithic growth on Si. This low dislocation density would eliminate defect-induced laser lifetime concerns for practical applications. The fabricated lasers show room-temperature pulsed and continuous-wave lasing at 1.31 μm, with a minimal threshold current density of 813 A/cm2. This generic concept can be applied to other material systems to provide higher integration density, more functionalities and lower total cost for photonics as well as microelectronics, MEMS, and many other applications