Top Research Papers on Mergers and Acquisitions

Hospital acquisition by another hospital or hospital system was associated with modestly worse patient experiences and no significant changes in readmission or mortality rates, and effects on process measures of quality were inconclusive.

This study examines the relationship between economic policy uncertainty and mergers and acquisitions (M&As) in China. Using all listed Chinese companies on the Shanghai and Shenzhen Stock Exchanges as well as 4188 ​M&A deals from the period of 2001–2018, we show that Chinese firms are more likely to make acquisitions during periods of high economic policy uncertainty, which contradicts the behavior of US firms. We further show that state-owned enterprises (SOEs) are less likely than non-SOEs to make acquisitions during periods of high economic policy uncertainty. SOEs are less likely ...

In recent years, heavy pollution enterprises often adopt green merger and acquisition (GMA) strategy to obtain green technology and resources, so as to realize the transformation and upgrading of pollution industry. Can GMA increase the environmental protection investment (EPI) and promote the green development of enterprises? The important marginal contribution of this paper is to explore the impact of GMA on EPI of heavy pollution listed companies, and compare the impact of different types of GMA on EPI. In this paper, PSM-DID method and nonlinear DID method are used for empirical analysis. ...

"Dr. Donald DePamphilis explains the real world of mergers, acquisitions, and restructuring based on his academic knowledge and personal experiences. Having taught in both the U.S. and Asia, Professor DePamphilis uses his extensive experience to provide eighty world-wide case studies spanning all industries to show how deals are done rather than just the theory behind them. The accompanying CD is unique in that it enables the user to download and customize sophisticated, transaction-tested, M&A software and other real-world content." "Mergers, Acquisitions, and Other Restructuring Activiti...

The integration of Environmental, Social, and Governance (ESG) considerations in corporate mergers and acquisitions (M&A) has gained significant traction as companies recognize the strategic value of sustainability in dealmaking. This paper explores how ESG factors can be incorporated into M&A strategies to drive value creation, meet regulatory requirements, and enhance corporate reputation. Leveraging improved data and tracking methods, the study highlights the increasing importance of ESG in M&A, presenting a comprehensive analysis of environmental, social, and governance factors...

Abstract This study explores the effect of environmental, social, and governance (ESG) performance on market value and performance in the context of mergers and acquisitions. We examine whether acquisition of targets with better ESG performance can help acquirers to increase their own ESG performance and whether the market values the increased ESG performance positively. Moreover, we explore whether the acquisition of targets with better ESG performance affects the market value of acquirers. For this study, we utilize a sample of 100 European mergers and acquisitions between 2003 and 2017, for...

In the past decade, synthetic chemists have discovered the outstanding generality and potential of visible-light-driven photoredox catalysis, which converts visible light into chemical energy, realizing numerous transformations of small molecules. The current state-of-the-art strategy in photoredox catalysis, combining photoredox and transition-metal catalysis, has received considerable attention in organometallic chemistry. In parallel with the rapid development of nickel/photoredox and copper/photoredox catalysis, cobalt/photoredox catalysis has emerged as a distinct new option in this area....

Abstract Binary neutron star mergers observations are a unique way to constrain fundamental physics and astrophysics at the extreme. The interpretation of gravitational-wave events and their electromagnetic counterparts crucially relies on general-relativistic models of the merger remnants. Quantitative models can be obtained only by means of numerical relativity simulations in $$3+1$$ 3 + 1 dimensions including detailed input physics for the nuclear matter, electromagnetic and weak interactions. This review summarizes the current understanding of merger remnants focusing on some of the aspect...

ABSTRACT Accretion discs around supermassive black holes are promising sites for stellar mass black hole mergers detectable with LIGO. Here we present the results of Monte Carlo simulations of black hole mergers within 1-d AGN disc models. For the spin distribution in the disc bulk, key findings are: (1) The distribution of χeff is naturally centred around $\tilde{\chi }_{\rm eff} \approx 0.0$, (2) the width of the χeff distribution is narrow for low natal spins. For the mass distribution in the disc bulk, key findings are: (3) mass ratios $\tilde{q} \sim 0.5\!-\!0.7$, (4) the maximum merger m...

Mergers of binaries consisting of two neutron stars, or a black hole and a\nneutron star, offer a unique opportunity to study a range of physical and\nastrophysical processes using two different and almost orthogonal probes -\ngravitational waves (GW) and electromagnetic (EM) emission. The GW signal\nprobes the binary and the physical processes that take place during the last\nstages of the merger, while the EM emission provides clues to the material that\nis thrown out following the merger. The accurate localization, which only the\nEM emission can provide, also indicates the astrophysical se...

This paper argues that incumbent firms may acquire innovative targets solely to discontinue the target’s innovation projects and preempt future competition. We call such acquisitions “killer acquisitions.” We develop a model illustrating this phenomenon. Using pharmaceutical industry data, we show that acquired drug projects are less likely to be developed when they overlap with the acquirer’s existing product portfolio, especially when the acquirer’s market power is large because of weak competition or distant patent expiration. Conservative estimates indicate that 5.3%–7.4% of acquisitions i...

The recently discovered gravitational wave sources GW190521 and GW190814 have shown evidence of BH mergers with masses and spins outside of the range expected from isolated stellar evolution. These merging objects could have undergone previous mergers. Such hierarchical mergers are predicted to be frequent in active galactic nuclei (AGNs) disks, where binaries form and evolve efficiently by dynamical interactions and gaseous dissipation. Here we compare the properties of these observed events to the theoretical models of mergers in AGN disks, which are obtained by performing one-dimensional N-...

In this article, we assess the genealogical validity of West‑Coastal Bantu (WCB) as a major subclade of the Bantu family by means of the Comparative Method. Based on a comparative dataset of 66 different cognate series, we demonstrate that languages previously classified as WCB according to lexicon‑based quantitative methods share at least one common phonological innovation: the phonemic merger of the Proto‑Bantu velar stops *g and *k due to the devoicing of *g when not preceded by a nasal. We show that the velar merger is a unique phonological innovation distinguishing WCB from other Bantu ph...

Abstract The recently discovered gravitational wave sources GW190521 and GW190814 have shown evidence of BH mergers with masses and spins outside of the range expected from isolated stellar evolution. These merging objects could have undergone previous mergers. Such hierarchical mergers are predicted to be frequent in active galactic nuclei (AGNs) disks, where binaries form and evolve efficiently by dynamical interactions and gaseous dissipation. Here we compare the properties of these observed events to the theoretical models of mergers in AGN disks, which are obtained by performing one-dimen...

With the first observation of a binary neutron star merger through gravitational waves and light, GW170817, compact binary mergers have now taken the center stage in nuclear astrophysics. They are thought to be one of the main astrophysical sites of production of r-process elements, and merger observations have become a fundamental tool to constrain the properties of matter. Here, we review our current understanding of the dynamics of neutron star mergers in general and of GW170817 in particular. We discuss the physical processes governing the inspiral, merger, and postmerger evolution, and we...

This Review details and contextualizes the advancements in molecule construction brought forth by metallaphotocatalysis and identifies novel activation modes entirely complementary to traditional catalytic platforms.

Natural sign languages of deaf communities are acquired on the same time scale as that of spoken languages if children have access to fluent signers providing input from birth. Infants are sensitive to linguistic information provided visually, and early milestones show many parallels. The modality may affect various areas of language acquisition; such effects include the form of signs (sign phonology), the potential advantage presented by visual iconicity, and the use of spatial locations to represent referents, locations, and movement events. Unfortunately, the vast majority of deaf children ...

Dynamics of Skill Acquisition, Second Edition, provides an analysis of the processes underlying human skill acquisition. As the first text to outline the multidisciplinary ecological dynamics framework for understanding movement behavior, this heavily updated edition stays on the cutting edge, with principles of nonlinear pedagogy and methodologies from the constraints-led approach. Students and practitioners across a variety of professions—including coaches, physical educators, trainers, and rehabilitation specialists—will appreciate the applied focus of this second edition. Movement models t...

Now in a fifth edition, this bestselling introductory textbook remains the cornerstone volume for the study of second language acquisition (SLA). Its chapters have been fully updated, and reorganized where appropriate, to provide a comprehensive yet accessible overview of the field and its related disciplines. In order to reflect current developments, new sections and expanded discussions have been added. The fifth edition of Second Language Acquisition retains the features that students found useful in previous editions. This edition provides pedagogical tools that encourage students to refle...

Abstract The astrophysical origin of gravitational wave transients is a timely open question in the wake of discoveries by the Laser Interferometer Gravitational-Wave Observatory (LIGO)/Virgo. In active galactic nuclei (AGNs), binaries form and evolve efficiently by interaction with a dense population of stars and the gaseous AGN disk. Previous studies have shown that stellar-mass black hole (BH) mergers in such environments can explain the merger rate and the number of suspected hierarchical mergers observed by LIGO/Virgo. The binary eccentricity distribution can provide further information t...

There is some weak evidence that the black hole merger named GW190521 had a non-zero eccentricity 1,2 . In addition, the masses of the component black holes exceeded the limit predicted by stellar evolution 3 . The large masses can be explained by successive mergers 4,5 , which may be efficient in gas disks surrounding active galactic nuclei, but it is difficult to maintain an eccentric orbit all the way to the merger, as basic physics would argue for circularization 6 . Here we show that active galactic nuclei disk environments can lead to an excess of eccentric mergers, if the interactions b...

It is shown that LIGO/Virgo design sensitivity has the potential to reach the PBH mass range of $10^{-2}-10^3 M_\odot$ and the constraint from the merger rate of perturbed binaries is stronger if PBHs are initially spatially clustered.

Tremendous progress has been made on molecular aspects of plant phosphorus (P) nutrition, often without heeding information provided by soil scientists, ecophysiologists, and crop physiologists. This review suggests ways to integrate information from different disciplines. When soil P availability is very low, P-mobilizing strategies are more effective than mycorrhizal strategies. Soil parameters largely determine how much P roots can acquire from P-impoverished soil, and kinetic properties of P transporters are less important. Changes in the expression of P transporters avoid P toxicity. Plan...

An overview of the factors limiting phosphorus acquisition by plants is given and various pathways and strategies plants have evolved at the level of development, metabolism and signal transduction to adapt to phosphorus deficiency are highlighted.

The present review discusses the stages of this process in chronological order and addresses the main outstanding questions that limit the understanding of the acquisition and establishment of a healthy microbiome at an individual level.

Abstract Several lines of evidence suggest that the Milky Way underwent a major merger at z ∼ 2 with the Gaia-Sausage-Enceladus (GSE) galaxy. Here we use H3 Survey data to argue that GSE entered the Galaxy on a retrograde orbit based on a population of highly retrograde stars with chemistry similar to the largely radial GSE debris. We present the first tailored N -body simulations of the merger. From a grid of ≈500 simulations we find that a GSE with M ⋆ = 5 × 10 8 M ⊙ , M DM = 2 × 10 11 M ⊙ best matches the H3 data. This simulation shows that the retrograde stars are stripped from GSE’s outer...

Abstract In dense stellar environments, the merger products of binary black hole mergers may undergo additional mergers. These hierarchical mergers are naturally expected to have higher masses than the first generation of black holes made from stars. The components of hierarchical mergers are expected to have significant characteristic spins, imprinted by the orbital angular momentum of the previous mergers. However, since the population properties of first-generation black holes are uncertain, it is difficult to know if any given merger is first-generation or hierarchical. We use observations...

The enabling transformations, synthetic applications, and mechanistic studies are presented alongside advantages as well as future directions to address the challenges of metal-catalyzed electrosynthesis.

A novel signature of the occurrence of a "delayed PT" - a PT that develops only some time after the merger and produces a metastable object with a quark-matter core, i.e., a hypermassive hybrid star.

There is irresistible observational evidence that binary systems of compact objects with at least one neutron star are progenitors of short gamma-ray bursts, as well as a production site for r -process elements, at least when some matter is ejected by the merger and an accretion disk is formed. Here, the recent observations of gravitational waves in conjunction with electromagnetic counterparts fuel the need for models predicting the outcome of a given merger and the properties of the associated matter outflows as a function of the initial parameters of the binary. In this manuscript, we provi...

The origin of black hole mergers discovered by the LIGO1 and Virgo2 gravitational-wave observatories is currently unknown. GW1905213,4 is the heaviest black hole merger detected so far. Its observed high mass and possible spin-induced orbital precession could arise from the binary having formed following a close encounter. An observational signature of close encounters is eccentric binary orbit5–7; however, this feature is currently difficult to identify due to the lack of suitable gravitational waveforms. No eccentric merger has been previously found8. Here we report 611 numerical relativity ...

Abstract The Liberal International Order (LIO) is currently being undermined not only by states such as Russia but also by voters in the West. We argue that both veins of discontent are driven by resentment toward the LIO's status hierarchy, rather than simply by economic grievances. Approaching discontent historically and sociologically, we show that there are two strains of recognition struggles against the LIO: one in the core of the West, driven by populist politicians and their voters, and one on the semiperiphery, fueled by competitively authoritarian governments and their supporters. At...

Abstract The mergers of binary compact objects such as neutron stars and black holes are of central interest to several areas of astrophysics, including as the progenitors of gamma-ray bursts (GRBs) 1 , sources of high-frequency gravitational waves (GWs) 2 and likely production sites for heavy-element nucleosynthesis by means of rapid neutron capture (the r -process) 3 . Here we present observations of the exceptionally bright GRB 230307A. We show that GRB 230307A belongs to the class of long-duration GRBs associated with compact object mergers 4–6 and contains a kilonova similar to AT2017gfo,...

The current article examines the importance of inspiration in second or foreign language acquisition. Motivation is a critical element in the success or failure of any mission. I would like to describe motivation in this article, explain the various forms of motivation, review previous research on the significance of motivation in learning languages, discuss the position of motivation, and finally state the important factors of motivation. According to the study of literature, inspiration is critical when it comes to learning English as a foreign or second language.

Abstract We present the third open gravitational-wave catalog (3-OGC) of compact-binary coalescences, based on the analysis of the public LIGO and Virgo data from 2015 through 2019 (O1, O2, O3a). Our updated catalog includes a population of 57 observations, including 4 binary black hole mergers that had not been previously reported. This consists of 55 binary black hole mergers and the 2 binary neutron star mergers, GW170817 and GW190425. We find no additional significant binary neutron star or neutron star–black hole merger events. The most confident new detection is the binary black hole mer...

Abstract We present the fourth Open Gravitational-wave Catalog (4-OGC) of binary neutron star (BNS), binary black hole (BBH), and neutron star–black hole (NSBH) mergers. The catalog includes observations from 2015 to 2020 covering the first through third observing runs (O1, O2, O3a, and O3b) of Advanced LIGO and Advanced Virgo. The updated catalog includes seven BBH mergers that were not previously reported with high significance during O3b for a total of 94 observations: 90 BBHs, 2 NSBHs, and 2 BNSs. The most confident new detection, GW200318_191337, has component masses 49.1 − 12.0 + 16.4 M ...

By dissecting complex signaling interactions between microbes within the root microbiome, a greater understanding of microbe-enhanced plant nutrition under specific biotic and abiotic stresses will be possible.

We identify analysts’ information acquisition patterns by linking EDGAR (Electronic Data Gathering, Analysis, and Retrieval) server activity to analysts’ brokerage houses. Analysts rely on EDGAR in 24% of their estimate updates with an average of eight filings viewed. We document that analysts’ attention to public information is driven by the demand for information and the analysts’ incentives and career concerns. We find that information acquisition via EDGAR is associated with a significant reduction in analysts’ forecasting error relative to their peers. This relationship is likewise presen...

A basic introduction to advanced targeting methods for people starting to work in this field is provided and their intrinsic strengths and weaknesses and compatibility with specific experimental setups are highlighted.

There is a large scope for improvement in the design hardware that can efficiently capture EMG signals and the accuracy with which the EMG signal is decoded has already crossed 99%, and with improvements in deep learning technology.