scholarly journals A Platform for Alkene Carbofunctionalization with Diverse Nucleophiles

2021 ◽  
Author(s):  
Travis Buchanan ◽  
Samuel Gockel ◽  
Alexander Veatch ◽  
Ya-Nong Wang ◽  
Kami Hull
Keyword(s):  
General System ◽  
Carbon Nucleophiles ◽  
Oxocarbenium Ion

A general system achieving three-component intermolecular carbofunctionalization of alkenes is presented. A range of substituted alkenes are functionalized with α-bromo carbonyl electrophiles and nitrogen, oxygen, and carbon nucleophiles. Mechanistic findings support the intermediacy of a cyclic oxocarbenium ion.

scholarly journals A Platform for Alkene Carbofunctionalization with Diverse Nucleophiles

2021 ◽  
Author(s):  
Travis Buchanan ◽  
Samuel Gockel ◽  
Alexander Veatch ◽  
Ya-Nong Wang ◽  
Kami Hull
Keyword(s):  
General System ◽  
Carbon Nucleophiles ◽  
Oxocarbenium Ion

A general system achieving three-component intermolecular carbofunctionalization of alkenes is presented. A range of substituted alkenes are functionalized with α-bromo carbonyl electrophiles and nitrogen, oxygen, and carbon nucleophiles. Mechanistic findings support the intermediacy of a cyclic oxocarbenium ion.

Synthesis of Allenyl Ketones by the Palladium-Catalyzed Carbonylation of 2-Alkynyl Carbonates in the Presence of Soft Carbon Nucleophiles

Synlett ◽  
1991 ◽  
Vol 1991 (09) ◽  
pp. 697-698 ◽  
Author(s):  
Tadakatsu Mandai ◽  
Hiroaki Kunitomi ◽  
Kiyoto Higashi ◽  
Mikio Kawada ◽  
Jiro Tsuji
Keyword(s):  
Carbon Nucleophiles ◽  
Palladium Catalyzed ◽  
Soft Carbon

Improving XGBoost with Imagination Sampling

2020 ◽  
Vol 2 (1) ◽  
pp. 3-6
Author(s):  
Eric Holloway
Keyword(s):  
Machine Learning ◽  
General System ◽  
Learning Models ◽  
Starting Point ◽  
Machine Learning Models

Imagination Sampling is the usage of a person as an oracle for generating or improving machine learning models. Previous work demonstrated a general system for using Imagination Sampling for obtaining multibox models. Here, the possibility of importing such models as the starting point for further automatic enhancement is explored.

Importance of the Intersection of Library and Information Sciences with Systems Theory

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Hannah Lee
Keyword(s):  
System Theory ◽  
General System ◽  
General System Theory ◽  
Von Bertalanffy ◽  
Meta Level ◽  
Professional Field ◽  
The Subject ◽  
Critical Insight ◽  
Insight Into ◽  
Information Sciences

This paper is the attempt to show how system theory could provide critical insight into the transdisciplinary field of library and information sciences (LIS). It begins with a discussion on the categorization of library and information sciences as an academic and professional field (or rather, the lack of evidence on the subject) and what is exactly meant by system theory, drawing upon the general system theory established by Ludwig von Bertalanffy. The main conversation of this paper focuses on the inadequacies of current meta-level discussions of LIS and the benefits of general system theory (particularly when considering the exponential rapidity in which information travels) with LIS.

Nickel-Catalyzed Regioselective Hydroalkylation of 1,3-Dienes with Hydrazones

2019 ◽  
Author(s):  
Leiyang Lv ◽  
Dianhu Zhu ◽  
Zihang Qiu ◽  
Jianbin Li ◽  
Chao-Jun Li
Keyword(s):  
Catalytic Method ◽  
Unsaturated Hydrocarbons ◽  
Carbon Nucleophiles ◽  
Aryl Aldehydes ◽  
Aldehydes And Ketones ◽  
Sterically Hindered

Hydroalkylation of unsaturated hydrocarbons with unstablized carbon nucleophiles is difficult and remains a major challenge. The disclosed examples so far mainly focused on the involvement of heteroatom and/or stabilized carbon nucleophiles as efficient reaction partners. Reported here is an unprecedented regioselective nickel-catalyzed hydroalkylation of 1,3-dienes with hydrazones, generated in situ from abundant aryl aldehydes and ketones and acted as both the sources of unstabilized carbanions and hydride. With this strategy, both terminal and sterically hindered internal dienes are hydroalkylated efficiently in a highly selective manner, thus providing a novel and reliable catalytic method to construct challenging C(sp3)-C(sp3) bonds.

Private letters of Siberian exiles about the ‘Turukhansk revolt’: 1908–1912

2018 ◽  
pp. 508-521
Author(s):  
Dmitrii A. Baksht ◽  
Keyword(s):  
20Th Century ◽  
Police Department ◽  
General System ◽  
Climatic Conditions ◽  
Russian Revolution ◽  
Early 20Th Century ◽  
Historical Sources ◽  
Revolutionary Movement ◽  
State Management ◽  
Management Institutions

The article studies the Turukhansk region as a territory with distinct climatic conditions and, consequently, with distinctive state management institutions and does so in the context of modernization processes of late 19th – early 20th century. This part of the Yenisei gubernia having become a region of mass exile after the First Russian Revolution of 1905–1907, its integration into a general system of management slowed down. Private letters of exiles are an important historical source, they reveal many aspects of the daily life of the persons under supervising in the inter-revolutionary period. The ‘Turukhansk revolt’ in the winter of 1908/09 revealed not only the ineffectiveness of exile as a penal measure, but also severel major problems of the region: archaic and scanty management institutions, lack of transport communication with southern uezds of the gubernia, underpopulation, and also gubernia and metropolitan officials’ ignorance of local affairs. The agencies of the Police Department of the Ministry of Internal Affairs expanded the practice of perlustration as involvement in the revolutionary movement grew. Siberian exiles had their correspondence routinely inspected, and yet in most cases they were inexperienced enough not to encrypt their messages. Surviving perlustration materials offer an ambivalent picture of the ‘Turukhansk revolt’: there were both approval and condemnation of the participants’ actions. The documents tell a tale of extreme cruelty of the punitive detachments even towards those who were not involved in the resistance. The subject of the Siberian exile of the early 20th century has research potential. There is virtually no scholarship on the exiles’ self-reflection concerning the ‘common violence’ of both anti-governmental groups and state punitive agencies. Diversification in political/party or social/class affiliation is not enough. The new materials have revealed a significant gap between several ‘streams’ of exiles: those banished to Siberia in midst of the First Russian Revolution differed from those exiled in 1910s. The article concludes that, having departed from the previous approach to studying the exile, ego-sources cease to be of lesser importance than other types of historical sources. Their subjectivity becomes an advantage for a high-quality text analysis.

Model of correlation between anticipatory consistency and intuitiveness in the development of neuroses

2020 ◽  
pp. 31-36
Author(s):  
Alexander Granitsa
Keyword(s):  
Significant Role ◽  
Defense Mechanisms ◽  
Somatoform Disorders ◽  
General System ◽  
Healthy People ◽  
Coping With Stress ◽  
Psychological Defense ◽  
Cluster Analyses ◽  
Neurotic Disorders

The aim of the study was to form the model of correlation between intuitiveness and anticipatory consistency in case of neurotic and somatoform disorders. The study included 197 patients with neurotic and somatoform disorders and 66 healthy people. We found a lower level of intuitiveness and anticipatory consistency in patients with neurotic disorders than in healthy people. Correlation and cluster analyses have shown that anticipatory inconsistency and a reduced intuitiveness play a significant role in the mechanisms of neurosis development. Intuitiveness in neurotic and somatoform disorders is the link between anticipatory consistency and psychological defense mechanisms in the general system of coping with stress.

Advanced Vehicle Parking System using PLC and SCADA

2019 ◽  
Vol 8 (6S2) ◽  
pp. 467-470
Keyword(s):  
Open Space ◽  
Organization Structure ◽  
General System ◽  
General Control ◽  
Control Center ◽  
Unit Process ◽  
Basic Goal ◽  
Parking Lot ◽  
Access Information ◽  
The Right

This work is to perceive the open space in the halting reach using PLC and SCADA. The rule target is to recognize the unfilled space and demonstrating the driver to a particular opening. This paper tries to layout and execute an electronic stopping region organization structure. Robotized Parking Lot Management System is a totally utilitarian and painstakingly controlled parking structure organization system that is executed with the usage and compromise of different electronic equipment and littler scale figuring. The layout incorporates assorted stages, from the rule unit; process is passed on to different subunits to achieve the target of full motorization. A moving toward auto will pass on (through the driver) remotely with the essential unit associated with the Parking Office Gate. The essential unit will check the transmitted access information and will pass control after affirmation to the gateway framework drivers, this in this way drives the right entryway control (either exit or segment unit). The system currently screens the development of the driver some time later, and for entry, as the driver moves a destined eparation into the workplace ,the system turns back the entryway segment (for finish of entryway) and passes control to the space part and organization unit. The objective of this later unit is to manage the parking spaces available in the package by watching the development of the automobiles inside, allocating the spaces in a precise manner, watching consistence what's more, prompt the general control center (watched out for) of the space(s) open. It has a show interface for talking with the customers of the workplace. There is in like manner a control center that is watched out for by work power and screens the activities inside the parking structure. It is educated regarding any development, space(s) open and moreover the general system can be shut down or changed on from the control center. The basic goal of this errand is to achieve full motorization and it will find snappy use in tremendous workplaces with different access restrictions, government properties, and school grounds to sectionalize educator's auto stop and understudy's auto stop, etc.

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