Detecting short-term gravitational waves from post-merger hyper-massive neutron stars with a kilohertz detector

Gravitational waves emanating from binary neutron star inspirals,alongside electromagnetic transients resulting from the aftermath of the GW170817 merger,have been successfully detected.However,the intricate post-merger dynamics that bridge these two sets of observables remain enigmatic.This includes if,and when,the post-merger remnant star collapses to a black hole,and what are the necessary conditions to power a short gamma-ray burst,and other observed electromagnetic counterparts.Our focus is on the detection of gravitational wave(GW)emissions from hyper-massive neutron stars(NSs)formed through binary neutron star(BNS)mergers.Utilizing several kilohertz GW detectors,we simulate BNS mergers within the detection limits of LIGO-Virgo-KARGA O4.Our objective is to ascertain the fraction of simulated sources that may emit detectable post-merger GW signals.For kilohertz detectors equipped with a new cavity design,we estimate that approximately 1.1%-32%of sources would emit a detectable post-merger GW signal.This fraction is contingent on the mass converted into gravitational wave energy,ranging from 0.01M_(sun)to 0.1M_(sun).Furthermore,by evaluating other well-regarded proposed kilohertz GW detectors,we anticipate that the fraction can increase to as much as 2.1%-61%under optimal performance conditions.

Risk Assessment and Control in Medical Investment,Merger,and Acquisition

The risk assessment and control of medical investment,merger,and acquisition are crucial topics within the medical industry,encompassing various aspects of investment,merger,and acquisition within this sector.The process primarily targets the unique nature and associated risks of the medical industry,focusing on effective risk management and control strategies to facilitate the smooth progression of investment,merger,and acquisition activities.

Merger and Acquisition, the Next Day in the Hellenic Banking System, Evidence From the Greek Financial Crisis Period

The aim of this study is to examine if the merger of banks improves the profitability of banks before and after the completion of the merger,in the Hellenic Banking System.For this reason,data were collected one year before the merger took place and then for the following years.The consequences of merging banks using different financial indicators,such as the capital ratio index,the foreign-to-equity index and the loan burden numerator,were also investigated.The effectiveness of interpreting the improvement of the bank’s financial image before and after the merger,for the years 2007-2016,years,before and after the Greek Financial Crisis,in the mergers carried out in the Hellenic Banking System was examined.

面向多院合并场景的信息系统重构实践

目的通过信息系统一体化融合建设,助推3家公立医院进行合并后的业务、管理融合。方法统筹设计信息系统及网络架构,建设一体化核心业务系统,并通过集成平台实现核心业务系统和其他异构系统的数据交互,建设集成融合的临床、运营和科研数据中心,加强数据应用。结果实现了业务层面应用模块基本统一、数据互联互通,为集团统一决策、统一管理提供有效的数据支撑。结论以信息化融合为目的,统筹设计信息系统,推动跨院区业务协同,实现医疗、信息资源共享,为集团临床业务整合、资产管理统一、科研持续发展打下了坚实的基础。

中小银行兼并重组与地方债务风险

中小银行兼并重组不仅是一种财务行为,还包含地方政府意志,是否有利于缓解地方债务风险值得关注。本文将2009—2021年566家中小银行微观数据与省级宏观债务数据进行匹配,运用系统GMM估计方法研究表明,中小银行兼并重组缓解了地方债务风险,但兼并重组累计次数与地方债务风险呈U形关系。在地区大型银行占比较高、信贷扩张较慢、高风险银行集聚、房地产依赖度较低、金融监管投入较高的地区,中小银行兼并重组对债务风险有更明显的缓解作用。其机制在于,兼并重组降低了地区银行业风险,减小了地方政府对银行的控制程度,从而缓解了地方债务风险。本文对理解中小银行兼并重组在推进地方财政治理中的作用有着启示意义。

A Cloud-resolving Study on the Role of Cumulus Merger in MCS with Heavy Precipitation

The cumulus merging processes in generating the mesoscale convective system （MCS） on 23 August 2001 in the Beijing region are studied by using a cloud-resolving mesoscale model of MM5. The results suggest that the merger processes occurred among isolated convective cells formed in high mountain region during southerly moving process play critical role in forming MCS and severe precipitating weather events such as hailfall, heavy rain, downburst and high-frequency lightning in the region. The formation of the MCS experiences multi-scale merging processes from single-cell scale merging to cloud cluster-scale merging, and high core merging. The merger process can apparently alter cloud dynamical and microphysical properties through enhancing both low- and middle-level forcing. Also, lightning flash rates are enhanced by the production of more intense and deeper convective cells by the merger process, especially by which, the more graupel-like ice particles are formed in clouds. The explosive convective development and the late peak lightning flash rate can be found during merging process.

Atypical Occlusion Process Caused by the Merger of a Sea-breeze Front and Gust Front

An atypical occlusion process that occurred in North China on 14 July 2011 is studied based on both observations and a real-data Weather Research and Forecasting （WRF） model simulation. The results show that this atypical occlusion process was significantly different from the traditional, synoptic-scale occlusion process that occurs within extratropical cyclones. It was caused by the merger of two cold-type mesoscale fronts. One of the fronts developed from the gust front of convective storms, while the other was a sea-breeze front. As the two fronts moved towards each other, the warm air between them was squeezed and separated from the surface. An atypical occluded front was formed when the two fronts merged, with the warm air forced aloft. This kind of occlusion is termed a ＂merger＂ process, different from the well-known ＂catch-up＂ and ＂wrap-up＂ processes. Moreover, local convection was found to be enhanced during the merger process, with severe convective weather produced in the merger area.

ANOTHER NEW METHOD FOR SUPPORTING ENTERPRISE IN THE FORMULATION OF ITS MERGER STRATEGIES

This paper discusses the key factors about industrial attractiveness and enterprise strength which influence the formulation of enterprise merger strategies. A new method for supporting an enterprise to analyze and evaluate its merger strategies is developed when the enterprise is making the decision of its merger strategies the method can be used to provide scientific support.

A Critical Study of Mergers and Acquisitions

This article presents and analyses the theories with respect to mergers and acquisitions, and list why companies or firms need to be reorganised. Different types of mergers occur under different situations. Mergers between companies which have same products or services called horizontal mergers; mergers between companies which have buyer-seller relationship called vertical mergers; and companies which have different business fields always use conglomerate mergers. The main motive of companies or firms choosing merger or acquisition is synergy.

Mergers and Acquisitions: An Efficiency Evaluation

This article sheds light on how synergies arise through mergers and acquisitions (M&A). Enterprises go through the process of Mergers and Acquisitions (M&A) with the goal of improving performance, increasing efficiency and obtaining business synergy. Prior literature suggests that synergies could arise due to taxes, market power or efficiency improvements. This study evaluates the efficiency of M&A in Brazil among publicly-traded companies. We used models with multiple objectives from Goal Programming and Data Envelopment Analysis (GPDEA), employing accounting indicators as input and output variables, and thus evaluated the emergence of synergy gains. These models allow us to analyze and classify the M&A according to the efficiency obtained in such processes. Some of the M&A cases analyzed were mistakenly considered efficient when used traditional models. And, as expected, the GPDEA was proved to be superior to classical models;however it was noticed that few of the cases investigated were proved to be effective. We presented a new application for multi-objective approach that can be used to assess mergers and acquisitions. The dualapplication of GPDEA provided a greater understanding of efficiency generation in synergy creation by means of M&A.

Modeling the factors that influence knowledge transfer in mergers and acquisitions

This paper constructs a model on the factors that influence knowledge transfer in mergers and acquisitions(M&A) and validates it via questionnaire surveys. Using 125valid collected questionnaires, multiple linear regression analysis and hierarchical regression analysis showed that five out of the ten factors had a positive effect on knowledge transfer effect. The ranking of factor importance, from high to low, was knowledge explicitness, relationship quality, learning intent, advanced transfer activities, and learning capability, which is fairly consistent with positive factors observed in other interorganizational knowledge transfer researches. Our results also showed that one of the control variables(size of acquired firm) had neither a direct or indirect effect on knowledge transfer in M&A. Additionally, our research found that knowledge distance and degree of M&A integration had a positive influence on knowledge transfer effect at the early stage after M&A, but had a negative influence at the late stage. Based on this research, several suggestions for knowledge transfer in M&A are proposed.

ANALYSING METHOD FOR THE FORMULATING PROCESS OF ENTERPRISE MERGER AND ACQUISITION STRAGEGIES BASED PETRI NET

For the first time, this paper introduces Petri net theory to the domain of enterprise strategy management, puts forword a new way by using Petri net to analyse and describe the formulating process of enterprise merger and acquisition strategies, provides a clear and simple tool for supporting the management bureau of enterprise to make its merger and acquisition strategies.

ON ADVANTAGE-COMPLEMENTARY MERGER:INCENTIVES AND RESULTS

This paper studied the change of the firm’s profit and social welfare after merger in the case of oligopoly and inhomogeneous products. By the hypothesis of an uncooperative perfect information static game model, the characteristics of market and products needed for the firm to improve its profit through merger were discussed under Cournot oligopoly model and Bertrand oligopoly model. To raise the firm’s profit can be well described as the incentive of advantage complementary merger. The change of social welfare influenced by the merger was also discussed. From the view of maximizing global social welfare, some advice was also given to regulate this type of merger.

Financial Boundaries Condition Analyzing Model for Non-equity Corporate Merger and Acquisition Decisions

The financial boundaries of negotiation for the acquirer and acquiree of a non-equity corporate Merger & Acquisition (hereafter M&A) is defined. A new analyzing model to determine financial boundary for thc M&A decision is developed. The negotiation range of transaction price and condition for the acquirer and acquiree by quantitative analyzing is put forward.

A global analysis searching for neutrinos associated with black hole merger gravitational wave events

Several neutrino observatories have searched for coincident neutrino signals associated with gravitational waves induced by the merging of two black holes. No statistically significant neutrino signal in excess of the background level was observed. These experiments use different neutrino detection technologies and are sensitive to various neutrino types. A combined analysis was performed on the KamLAND, Super-Kamiokande and Borexino experimental data with a frequentist statistical approach to achieve a global picture of the associated neutrino fluence. Both monochromatic and Fermi-Dirac neutrino spectra were assumed in the calculation. The final results are consistent with null neutrino signals associated with the process of a binary black hole merger. The derived 90% confidence level upper limits on the fluence and luminosity of various neutrino types are presented for neutrino energy less than110 MeV.

A NEW METHOD FOR SUPPORTING ENTERPRISE IN THE FORMULATION OF ITS MERGER STRATEGICS

This paper discusses the influences of experience effect and market growth rate on the formulation of enterprise merger strategies; develops a new model for technically analysing and evaluating enterprise merger strategies by combining the progromming tool in market share theory-experience curve; and the key factor reflecting external enviornment-market growth rate, to provide scientific support when an enterprise decides to make its merger strategies.

Re-Discussion on the Financial Boundaries for Corporate Merger and Acquisition Decisions

This paper discusses the acquiring methods of corporatemerger and acquisition,defines the financial boundariesof negotiation for both an acquirer and an acquiree,de-velops a new analyzing model to determine the financialboundary for the M&A decision.The paper also putsforward the negotiation range of transferring price andcondition for the acquirer and acquiree by quantitativeanalysis.In the end,the peper points out that it is prof-itable for both of the acquirer and acquiree to implementacquisition in the range of financial boundaries.

“一带一路”倡议下企业海外并购宏观风险预警实证研究——以某化工企业为例

在“一带一路”倡议背景下,以中国某化工企业为例,分析并购过程中存在的政治、经济和整合等风险,提出建立企业海外并购宏观风险预警指标体系和多级模糊评价企业海外并购风险预警模型。结果表明:企业海外并购宏观风险预警指标效度均高于0.95;预警模型显示化工企业海外并购计划宏观风险中的政治风险和法律风险均为正常状态,整合和经济风险均为亚风险状态,可有效预警企业海外并购宏观风险。

Enhancing mergers and acquisition quality,accelerating technological innovation and achieving the second leap of China's steel industry

Over the past 10 years, China＇s steel industry has made a substantial development in terms of scale, and has finally become a steel giant in the world. In the upcoming 10 years, fundamental changes will be made with the economic growth in China. Against this background, China＇ s steel industry will shift from a rapid development to a slow but sound development. In order to fulfill the second leap of China＇s steel industry, based on its current developing status and characteristics, and from the perspective of both national and corporate development, mergers and acquisition are both effective ways to raise the quality of the existing stock of asset in the steel industry, while technological innovation is the solid foundation for its second leap.

Selection of Mergers and Acquisitions by Foreign Capital in Open Economies

By a linear Cournot model, the factors associated with the integration of two firms are discussed in terms of their effects on the private surplus and the social welfare in economies with varying extent of openness. Meanwhile, the trade policy of the host government is taken into account. It is concluded that the more open the economy and the more intense the competition, the less profitable the integration; the most important determinant to the changes of the domestic social welfare is the industry strength of the host country. The host authority can enhance the domestic social welfare in two ways： to adjust the trade policy and to only approve the socially desirable cross-border mergers and acquisitions.