Skip to content
Free planNo credit card requiredStart writing
AI for Research home
AI for Research home
Dashboard
Sign inGet started

Search 250 million research papers

Read the abstract, see who wrote it and who cites it, and get the citation in APA, MLA, Chicago or Harvard.

About 10,000 papers for “Envelopment”

Platform envelopment

Thomas R. Eisenmann, Geoffrey Parker, Marshall Van Alstyne · Strategic Management Journal · 2011

Abstract Due to network effects and switching costs in platform markets, entrants generally must offer revolutionary functionality to win substantial market share. We explore a second entry path that does not rely upon Schumpeterian innovation: platform envelopment. Through envelopment, a provider in one platform market can enter another platform market, and combine its own functionality with that of the target in a multi‐platform bundle that leverages shared user relationships. Envelopers capture market share by foreclosing an incumbent's access to users; in doing so, they harness the network effects that previously had protected the incumbent. We present a typology of envelopment attacks based on whether platform pairs are complements, weak substitutes, or functionally unrelated and we analyze conditions under which these attack types are likely to succeed. Copyright © 2011 John Wiley & Sons, Ltd.

Cited by 715

Conceptual Envelopment

David Kilcullen · Oxford University Press eBooks · 2020

Abstract This chapter discusses China’s evolution and adaptation since the Cold War, surveys the evolution of Chinese forces, offers case studies of the Sino-Vietnamese War and the South China Sea, introduces and analyzes the concept of conceptual envelopment as it relates to China, discusses the transformative effect of China’s emergence as a global oceanic and maritime power, and explores the concept of unrestricted warfare and China’s Three Warfares doctrine. It argues that, in the quarter century since 1993, China has learned by watching the West struggle in the post-Cold War era, and has taken advantage of Western preoccupation with terrorism since 2001. The 1991 Gulf War, the 1996 Third Taiwan Strait Crisis, and the 1999 bombing of the Chinese Embassy in Belgrade prompted strategists in Beijing to shift from a peacetime, concept-led adaptation process to a wartime, reactive approach that treats the United States as a “pacing threat.”

Cited by 0

Envelopment Analysis

Amir Ashkan Nasiripour, Abbas Toloie-ashlaghy, Seyed Jamaleddin Ta et al. · 2013

Background: Universities of Medical Science and Health Services (UMSHSs) are among the main organizations in Iran’s health-care section. Improving their efficiency in financial resource management through creating an appropri-ate coordination between consumption and resources is strategically vital. Investigating the financial performance as well as ranking the Iranian UMSHSs is the research objective. Methods: The study is of descriptive and applied type. The study population includes the UMSHSs of Iran (n=42) among which 24 UMSHSs are selected. DEA is used with the aim to model and assess the financial performance in-cluding 4 inputs and 3 outputs. Also, linear regression is applied to determine the effectiveness of the applied indices as well as the level of the financial performance. Data are obtained from the Budgeting Center in the Ministry of Health and Medical Education, during 2010 mainly through forms designed based on the available balance sheets. Results: The average score of financial performance assessment for UMSHSs based on the DEA of input-oriented

Cited by 0

Listener Envelopment

Marion, Bruno · The Sydney eScholarship Repository (The University of Sydney) · 2014

Architecture & Allied Arts

Cited by 0

Data envelopment analysis

Ana Patricia García Amado, Manuela Gonzalez Hurtado · Universidad Industrial de Santander · 2011

Análisis Envolvente de Datos Eficiencia Supereficiencia RESUMEN Con el fin de hacer un seguimiento en el desempeño de las Instituciones de Educación Superior (IES), entidades como el Ministerio de Educación Nacional (MEN) y el Sistema de Universidades Estatales (SUE) han desarrollado los Indicadores de Gestión que permiten monitorear el funcionamiento de las universidades y el manejo de sus recursos. Para cuantificar tal desempeño, en términos de eficiencia, este trabajo propone como herramienta de medición el Análisis Envolvente de Datos (AED), una eficaz técnica de optimización que mide y compara la eficiencia de unidades organizacionales, en este caso universidades, con respecto a otras de la misma línea de producción. Este trabajo tuvo como fin evaluar la eficiencia de las universidades públicas de Colombia en el año 2009, así mismo, evaluar la eficiencia de cada una de ellas respecto a sí misma y respecto al grupo al cual pertenecen, clasificadas de acuerdo a su capacidad, en el período 2003-2009. Para lo anterior se tomó como insumos los indicadores del índice de capacidad y como productos los de investigación y formación y se aplicó los modelos CCR y Supereficiencia orientado a los productos, es decir, se evaluó la eficiencia en términos de producción. Si bien la eficiencia en formación se puede considerar que ha sido alta y estable durante los años considerados, presenta una ligera tendencia de disminución en los dos últimos años. Contrariamente, la eficiencia en investigación muestra una tendencia creciente en los últimos años, fruto del empeño que las universidades han puesto en este aspecto en estos años bajo la influencia, entre otros aspectos, del proceso de evaluación de la gestión de las universidades que el SUE y el MEN han venido realizando desde 2003.

Cited by 0Open access

Data Envelopment Analysis

Jean‐Marc Huguenin · 2013

This contribution introduces Data Envelopment Analysis (DEA), a performance measurement technique. DEA helps decision makers for the following reasons: (1) By calculating an efficiency score, it indicates if a firm is efficient or has capacity for improvement; (2) By setting target values for input and output, it calculates how much input must be decreased or output increased in order to become efficient; (3) By identifying the nature of returns to scale, it indicates if a firm has to decrease or increase its scale (or size) in order to minimise the average total cost; (4) By identifying a set of benchmarks, it specifies which other firms' processes need to be analysed in order to improve its own practices. This contribution presents the essentials about DEA, alongside a case study to intuitively understand its application. It also introduces Win4DEAP, a software package that conducts efficiency analysis based on DEA methodology. The methodical background of DEA is presented for more demanding readers. Finally, four advanced topics of DEA are treated: adjustment to the environment, preferences, sensitivity analysis and time series data.

Cited by 8

Data Envelopment Analysis:

Cecilio Mar Molinero, David Woracker · OR Insight · 1996

Data Envelopment Analysis (DEA) is a Linear Programming based technique for the analysis of efficiency of organisations with multiple inputs and outputs. DEA may not achieve its full potential due to the mathematical language in which most papers and books have been written. In this article the authors explain in a non-mathematical way the principles on which DEA is based. Concepts, definitions and methodology issues are explored by means of a hypothetical example involving prison establishments.

Cited by 15

Data Envelopment Analysis

Pereira, José Veiga · Instituto Politécnico do Porto · 2017

A avaliação das organizações e a deterntinação da performance obtida pelo exercício da gestão, tem sido uma preocupação constante de gestores e accionistas, embora com objectivos diversos. Nos dias de hoje, a questão coloca-se com maior acuidade quer pela competitividade acrescida quer pela dimensão e complexidade actual das empresas. Pretendemos com este trabalho fazer uma descrição da metodologia DEA - Data Envelopment Analysis - nas suas formulações iniciais mais simples. A metodologia do DEA, pretende obter uma medida única e simples de avaliação da eficiência, combinando um conjunto de outputs e de inputs relativos às diferentes unidades homogéneas que se pretendem avaliar. O método DEA é um método não paramétrico que pelas suas características é particularmente adequado à avaliação de unidades homogéneas não necessariamente lucrativas. Concluímos, em geral, que são úteis e constituem um avanço importante, as informações obtidas através do DEA mas que outros métodos, designadamente rácios e análises de regressão, podem dar um contributo importante para complementar aquela análise.

Cited by 0Open access

Data Envelopment Analysis

Farhad Hosseinzadeh Lotfı, Tofigh Allahviranloo, Morteza Shafiee et al. · Studies in big data · 2023

Cited by 8

Data envelopment analysis

Rowena Jacobs, Peter Smith, Andrew Street · Cambridge University Press eBooks · 2006

Data envelopment analysis (DEA) has become the dominant approach to efficiency measurement in health care and in many other sectors of the economy (Hollingsworth 2003). While the parametric approach is guided by economic theory, DEA is a data-driven approach. The location (and the shape) of the efficiency frontier is determined by the data, using the simple notion that an organisation that employs less input than another to produce the same amount of output can be considered more efficient. Those observations with the highest ratios of output to input are considered efficient, and the efficiency frontier is constructed by joining these observations up in the input-output space. The frontier thus comprises a series of linear segments connecting one efficient observation to another. The construction of the frontier is based on ‘best observed practice’ and is therefore only an approximation to the true, unobserved efficiency frontier.

Cited by 19

Data Envelopment Analysis.

K. W. Wöber · CABI Publishing eBooks · 2002

This chapter assesses the suitability of data envelopment analysis (DEA) for the selection of comparison partners in benchmarking studies within the hotel industry. The analysis is based on the Austrian Hotel and Restaurant Panel (AHRP) database. Several extensions that have been proposed to address severe shortcomings of the basic DEA model are discussed in detail. The chapter concludes by highlighting the strengths and weaknesses of the DEA approach.

Cited by 13

Data Envelopment Analysis

José Veiga Pereira · Review of Business and Legal Sciences · 2017

A avaliação das organizações e a deterntinação da performance obtida pelo exercício da gestão, tem sido uma preocupação constante de gestores e accionistas, embora com objectivos diversos. Nos dias de hoje, a questão coloca-se com maior acuidade quer pela competitividade acrescida quer pela dimensão e complexidade actual das empresas. Pretendemos com este trabalho fazer uma descrição da metodologia DEA - Data Envelopment Analysis - nas suas formulações iniciais mais simples. A metodologia do DEA, pretende obter uma medida única e simples de avaliação da eficiência, combinando um conjunto de outputs e de inputs relativos às diferentes unidades homogéneas que se pretendem avaliar.O método DEA é um método não paramétrico que pelas suas características é particularmente adequado à avaliação de unidades homogéneas não necessariamente lucrativas.Concluímos, em geral, que são úteis e constituem um avanço importante, as informações obtidas através do DEA mas que outros métodos, designadamente rácios e análises de regressão, podem dar um contributo importante para complementar aquela análise.

Cited by 7Open access