Results 171 to 180 of about 2,027,320 (311)

Left-truncated discrete lifespans: The AFiD enterprise panel [PDF]

arXiv
Our model for the lifespan of an enterprise is the geometric distribution. We do not formulate a model for enterprise foundation, but assume that foundations and lifespans are independent. We aim to fit the model to information about foundation and closure of German enterprises in the AFiD panel.
arxiv  

Social Enterprise: A Portrait of the Field [PDF]

, 2010
The Social Enterprise Alliance recently partnered with Community Wealth Ventures and Duke University's Center for the Advancement of Social Entrepreneurship to assess the state of social enterprise in the nonprofit sector in the United States and Canada.

core  

Tunable Preparation of β‐Substituted Alkenoate Esters via Radical Alkenylation of C(sp3)–H Bonds with Allenoates

Advanced Synthesis &Catalysis, EarlyView.
Abstract A photocatalytic strategy for the radical alkenylation of aliphatic C(sp3)–H bonds with 2,3‐allenoate esters is described. The protocol takes place upon irradiation of the reaction mixture in the presence of the decatungstate anion, which triggers C−H cleavage in the chosen aliphatic substrates.
Alexandra Jorea, Roberto Chessa, Davide Ravelli   +2 more
wiley   +1 more source

American Business Enterprise. A Study in Industrial Organisation. [PDF]

, 1908
A. W. Fl., Douglas Knoop
openalex   +1 more source

Accurate and Efficient Behavioral Modeling of GaN HEMTs Using An Optimized Light Gradient Boosting Machine

Advanced Theory and Simulations, EarlyView.
Machine Learning (ML) and optimization have permeated almost every aspect of engineering applications. Recent years have seen great traction toward ML‐based GaN HEMT modelling. However, ML‐based GaN HEMT models are mostly developed using variants of Artificial Neural Network (ANN).
Saddam Husain, Mohammad Hashmi, Fadhel M. Ghannouchi   +2 more
wiley   +1 more source

Has Anti-corruption Efforts lowered Enterprises Innovation Efficiency? -An Empirical Analysis from China [PDF]

arXiv
This study adopts the fixed effects panel model and provincial panel data on anticorruption and the innovation efficiency of high-level technology and new technology enterprises in China from 2005 to 2014, to estimate the effects of the anticorruption movement on the innovation efficiency of enterprises at different corruption levels.
arxiv  

Mechanochemistry: Fundamental Principles and Applications

Advanced Science, EarlyView.
In this review, the physicochemical principles of mechanochemistry are first clarified. Based on this foundation, the research basis and cutting‐edge scientific achievements in four areas are introduced: solid‐state organic chemistry, polymers, interface science, and biomechanochemistry.
Liang Dong, Luofei Li, Huiyan Chen, Yi Cao, Hai Lei   +4 more
wiley   +1 more source

EXPERIMENTAL DETERMINATION OF THE HYDROGEN CONCENTRATION IN THE BATTERY BOXES OF THE PASSENGER CARS

Nauka ta progres transportu, 2010
In the work the experimental determination of the hydrogen concentration in accumulator boxes of the coach in a charging mode of nickel-cadmium batteries in operating conditions (stop and operation) is presented.
G. S. Ighnatov , V. R. Raspopin, , S. D. Sychev, S. V. Shmakov , P. A. Khozja, A. A. Sulim, A. A. Melnyk   +6 more
doaj   +2 more sources

THE ROLE OF THE DIFFUSION DEOXIDATION IN ACID PROCESS

Литьë и металлургия, 2004
The processes of diffusion deoxidation of the metal the electric furnaces with acid fettling in the production of the component parts for rolling stock are considered.
M. S. Shramko, A. V. Malyj, V. I. Minakova, A. D. Leshchenko, O. A. Djachenko   +4 more
doaj  

The Voyages and Colonising Enterprises of Sir Humphrey Gilbert [PDF]

, 1942
Wesley Frank Craven
openalex   +1 more source