1,350 research outputs found
Stochastic Nonparametric Envelopment of Data: Combining Virtues of SFA and DEA in a Unified Framework
No full textThe literature of productive efficiency analysis is divided into two main branches: the parametric Stochastic Frontier Analysis (SFA) and nonparametric Data Envelopment Analysis (DEA). This paper attempts to combine the virtues of both approaches in a unified framework. We follow the SFA literature and introduce a stochastic component decomposed into idiosyncratic error and technical inefficiency components imposing the standard SFA assumptions. In contrast to the SFA, we do not make any prior assumptions about the functional form of the deterministic production function. In this respect, we follow the nonparametric route of DEA that only imposes free disposability, convexity, and some specification of returns to scale. From the postulated class of production functions, the proposed method identifies the production function with the best empirical fit to the data. The resulting function will always take a piece-wise linear form analogous to the DEA frontiers. We discuss the practical implementation of the method and illustrate its potential by means empirical examples.Productivity Analysis,
The Portrayal of Family and Self-reflexivity in Luigi Pirandello’s Six Characters in Search of an Author
No full textLuigi Pirandello’s play, Six Characters in Search of an Author (1921, Sei personaggi in cerca d’autore)
portrays numerous significant and functional characteristics of metatheatre, a concept coined by Lionel
Abel. By drawing on such metatheatrical features and the play within a play technique, Pirandello’s play
presents six characters that are in search of an author. This study will, therefore, explain the concept
of metatheatre and present a critical analysis of the play, Six Characters as a self-reflexive play. In this
critical engagement with the text through specific references from the play and relevant secondary sources,
important themes in the play such as reality and illusion, life, art, and the representation of the family in the
play will be analysed. This analysis will ultimately demonstrate that Pirandello presents six characters that
are self-conscious of their position as dramatic characters that manage to act out their roles, which actually
reveal the family relationships between the characters
METAFORA DALAM KUMPULAN PUISI KERTAS BASAH KARYA DEA ANUGRAH
No full textThis study aims to describe the forms of figurative language used in Dea Anugrah's Wet Paper poetry. This research uses descriptive analysis method. Data collection uses the technique of observing and noting. Before conducting the research, the first step is reading a collection of Wet Paper poems by Dea Anugrah to find out the style of metaphorical language contained in the poem, then the second step is to record the results of the language style contained in the metaphorical language style in Dea Anugrah's Wet Paper poetry, and after that describe or analyze the meaning. the appropriate metaphorical language style in the Wet Paper poem by Dea Anugrah. The results of the analysis of the research on metaphorical figurative language in the poetry of Kertas Wet by Dea Anugrah are 20 styles of metaphorical language from 13 collections of Kertas Wet poems by Dea Anugrah. This study aims to describe the forms of figurative language used in Dea Anugrah's Wet Paper poetry. This research uses descriptive analysis method. Data collection uses the technique of observing and noting. Before conducting the research, the first step is reading a collection of Wet Paper poems by Dea Anugrah to find out the style of metaphorical language contained in the poem, then the second step is to record the results of the language style contained in the metaphorical language style in Dea Anugrah's Wet Paper poetry, and after that describe or analyze the meaning. the appropriate metaphorical language style in the Wet Paper poem by Dea Anugrah. The results of the analysis of the research on metaphorical figurative language in the poetry of Kertas Wet by Dea Anugrah are 20 styles of metaphorical language from 13 collections of Kertas Wet poems by Dea Anugrah
Double bootstrap confidence intervals in the two-stage DEA approach
No full textContextual factors usually assume an important role in determining firms' productive efficiencies. Nevertheless, identifying them in a regression framework might be complicated. The problem arises from the efficiencies being correlated with each other when estimated by Data Envelopment Analysis, rendering standard inference methods invalid. Simar and Wilson (2007) suggest the use of bootstrap algorithms that allow for valid statistical inference in this context. This article extends their work by proposing a double bootstrap algorithm for obtaining confidence intervals with improved coverage probabilities. Moreover, acknowledging the computational burden associated with iterated bootstrap procedures, we provide an algorithm based on deterministic stopping rules, which is less computationally demanding. Monte Carlo evidence shows considerable improvement in the coverage probabilities after iterating the bootstrap procedure. The results also suggest that percentile confidence intervals perform better than their basic counterpart.Peer reviewe
ANALISIS EFISIENSI BANK UMUM SYARIAH (BUS) DI INDONESIA DENGAN MENGGUNAKAN METODE DATA ENVELOPMENT ANALYSIS (DEA) PERIODE 2017-2019
No full textABSTRAK
Perkembangan Bank Umum Syariah di Indonesia yang semakin bertambah akan memungkinkan semakin bertambah pula permasalahan yang dihadapi. Inti dari permasalahan tersebut terletak pada sistem operasional dan struktur perbankan yang efisien, karena baik buruknya perbankan dilihat dari kebijakan operasionalnya yang efisien. Tujuan dari penelitian ini yaitu untuk mengetahui efisiensi Bank Umum Syariah (BUS) di Indonesia dengan menggunakan metode Data Envelopment Analysis (DEA) periode 2017-2019.
Penelitian ini menggunakan metode deskriptif dengan pendekatan kuantitatif. Populasi yang digunakan dalam penelitian ini adalah 14 bank umum syariah di Indonesia. Sample yang digunakan adalah Bank Aceh Syariah, Bank Muamalat Indonesia, Bank Victoria Syariah, Bank Panin Dubai Syariah, Bank Syariah Bukopin, BCA Syariah dan BTPN Syariah. Metode penelitian yang digunakan yaitu Data Envelopment Analysis (DEA).
Suatu bank umum syariah dikatakan efisien jika memiliki nilai efisiensi 1 dan semakin tidak efisien jika mendekati 0. Hasil analisis dengan menggunakan Data Envelopment Analysis (DEA) menunjukkan bahwa hanya ada dua bank yang efisien selama periode 2017-2019, yaitu Bank Victoria Syariah dan Bank Syariah Bukopin. Sedangkan lima bank lainnya belum sepenuhnya efisien. Rata-rata nilai efisiensi bank-bank sampel selama periode penelitian yaitu tidak efisien.
Kata Kunci: Bank Umum Syariah, Efisiensi, Data Envelopment Analysis (DEA
THE STRUGGLE OF CANADIAN WOMEN IN ANNE OF GREEN GABLES BY LUCY MAUD MONTGOMERY
No full textThis study discusses the image of Canadian women in one of Lucy Maud Montgomery's works entitled Anne of Green Gables. This study aims to describe the life or condition of women in the 20th century in Canada. In analyzing this work, the writer uses the theory of feminism by Lois Tyson, the image of women by A.W. Ali, and the mimetic approach by M.H. Abrams. The author also uses qualitative methods and a
literature review in this research method. The study results show that female characters in Canada in the 20th century were transitional women. Then there is also a reflection on
how women's struggle in the novel against gender inequality in Canada
New Models for Data Envelopment Analysis. Measuring Efficiency Outwith the VRS Frontier
No full textSome models are presented in this paper which extend the concept of measuring superefficiency to the useful case of variable returns-to-scales (VRS), thus enabling the ranking of efficient as well as inefficient units. Two models, namely the Universal Radial Model and the Universal Additive Model, are presented that also have strong invariance properties (units and translation invariance). For both of these models a method for normalising the efficiency scores on a (0-1+) scale is presented. These models have been implemented in a software package and applied to the ranking of units in an industrial context.Data envelopment analysis (DEA), Superefficiency, Universal models
Measuring the relative efficiency of banks using DEA method
No full textData Envelopment Analysis (DEA) is one of the most popular methods used for measuring the relative efficiency of similar units by considering various input/output parameters. This paper implements DEA models to estimate the relative efficiency of selected banks in the United States. The proposed study uses two inputs, total assets and number of employees, and one output, net revenue for measuring the relative efficiency of selected banks. The relative efficiencies of different banks are analyzed. The preliminary results indicate that Santander Bank is the most efficient banks operating in the United States followed by SunTrust Bank and HSBC. Other banks preserve lower efficiency compared with these three banks.Peer reviewedFinal article published.Data envelopment analysis (DEA)EfficiencyBank industr
Stochastic DEA
No full textInternational audienceData Envelopment Analysis (DEA) was introduced as a linear programming model by Charnes et al. (Eur J Oper Res 2:429\textendash444, 1978) and Banker et al. (Manag Sci 30:1078\textendash1092, 1984) as a nonparametric model to estimate frontier production and technical efficiency using linear programming. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG
Basic analytical capabilities of the CCR-DEA model
No full textThe article describes some analytical applications of the basic DEA model – CCR model proposed by Charnes, Cooper and Rhodes [2]. The author presents elementary DEA profiles, terminology, ideas and some traditional ways of determining the optimal technology for inefficient objects and benchmarking and estimating the type and size of returns to scale. The evaluation of input excess and output shortage is also described. In this context, the author suggests an economic interpretation of the optimal solution of the CCR model as a task that consists of creating virtual technology of a given set of objects. The author also presents how to determine the structure of a target and optimal technology and indicates the way of using simplex reports in sensitivity analysis of the solution to the CCR model. All these reflections are illustrated by a real-life DEA problem that concerns bank efficiency.CCR-DEA, interpretation of CCR model, Optimal technology structure
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