Results 141 to 150 of about 3,714 (283)

Why theory matters for causal inference? Rethinking endogeneity in entrepreneurship research

open access: yesStrategic Entrepreneurship Journal, EarlyView.
Abstract Endogeneity in entrepreneurship research is often treated as a statistical complication addressable through advanced econometric tools. This commentary argues that such an approach overlooks a deeper issue: endogeneity is conceptual before it is statistical.
Daniel Tzabbar
wiley   +1 more source

Stakeholder synergies in acquisitions

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Acquisitions can create synergies by combining an acquirer's and a target's pre‐existing relationships with nonmarket stakeholders. We introduce the “reset effect” as a novel mechanism that occurs when a firm with cooperative stakeholder relationships combines with a firm that has conflictual relationships, prompting the ...
Kate Odziemkowska   +2 more
wiley   +1 more source

Design and Performance of a 500 V Pulse Amplifier for the Chopper of the CERN Superonducting H$^-$ LINAC (SPL)

open access: yes, 2002
The Superconducting H- Linac under study at CERN requires a high performance 3 MeV chopper. The pulse amplifier driving the chopper structure has to provide 500 V on 50 W, with rise and fall times below 2 ns at a repetition rate as high as 45 MHz.
Paoluzzi, Μ, Paoluzzi, M
core  

Laser‐Direct Printed 2D Material‐Based Heterostructure for the Fabrication of Electronic Devices

open access: yesSmall, EarlyView.
The Digital Laser‐Induced Forward Transfer (LIFT) approach is employed to pattern and stack 2D materials with micrometer‐scale precision. PdSe2 and MoSe2 are assembled into vertical p–n junctions, with graphene serving as a transparent electrode. The resulting laser‐transferred heterostructures exhibit high material quality and stable rectifying ...
Ilias Cheliotis   +12 more
wiley   +1 more source

Study of chopper stabilization in single ended amplifiers

open access: yes, 2019
Chopper stabilization is one of the prominent techniques used to overcome low-frequency noise and DC offset errors in CMOS amplifiers. This thesis presents a detailed analysis of this approach.
Malhotra, Chetna
core  

Is Reading an Upstream Predictor of Science and Mathematics Achievements in PISA? A Bayesian Network Analysis for Policy Educational Interventions on Socio‐Economic Dispersion and Gender Gaps

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT This study investigates the structural relationships among reading, science and mathematics performance, socio‐economic dispersion (SES_Variance) and gender gaps using cross‐country PISA 2022 data. The primary objective is to assess whether reading functions as an upstream determinant of academic achievement and to evaluate the causal roles of
Simona‐Vasilica Oprea, Adela Bâra
wiley   +1 more source

The Circuit Design of the Receiving Part of the Portable Electroencephalogram System

open access: yesمهندسی مخابرات جنوب
In recent years, many electroencephalogram (EEG) devices have become portable and wireless. Given the requirements for mobility, EEG instruments need to be smaller, lighter, and power-efficient with reduced noise and offset.
Marzieh Moradi, Mosoud Dousti
doaj  

Ppb-level formaldehyde sensor utilizing a compact 3D-printed differential photoacoustic cell and a 320 nm UV laser. [PDF]

open access: yesPhotoacoustics
Yang X   +10 more
europepmc   +1 more source

Fatigue Strength in Additive Toolmaking: A Study of Metal Binder Jetting and Electron Beam Melting for Processing Carbide‐Rich Cold‐Work Tool Steels

open access: yessteel research international, EarlyView.
Focusing on the critical tap hole region of the blast furnace, this work examines binder characteristics, prepares tap hole clay with different formulations, and evaluates their physical properties. The findings confirm the advantages of composite binders and offer a new binder option for tap hole clay.
Frederik Tegeder   +7 more
wiley   +1 more source

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