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Combination of Top-down and Bottom-up DEA models using PCA: A Two-Stage Network DEA with Shared Input and Undesirable Output for Evaluation of the Road Transport Sector
Socio-Economic Planning Sciences. 2023. Vol. 89. Article 101706.
This paper presents a network data envelopment analysis (NDEA) model to assess road transport sector by considering energy and non-energy inputs, shared input, and desirable and undesirable outputs. The sector is considered as a two-stage framework where in stage 1, energy-environmental efficiency is calculated and in stage 2, technical efficiency is estimated. There are two general approaches for evaluation of the network structures using NDEA models: bottom-up and top-down. In the bottom-up approach of this study, a goal programming NDEA (GP-NDEA) model is proposed to calculate the efficiency of the two stages at the same time and then overall efficiency is obtained using the results of the two stages. In the top-down approach, both non-radial SBM-NDEA and RAM-NDEA models are applied to calculate the overall efficiency and then the efficiencies of stage 1 and stage 2 are estimated using the results of the overall efficiency. Three different models GP-NDEA, SBM-NDEA, and RAM-NDEA lead to different results and to obtain the final efficiencies and ranks, principal component analysis (PCA) method is applied. The efficiency generated by different bottom-up and top-down approaches are considered as indicators in PCA, and the final scores for both stages are calculated using PCA. To illustrate the capability of the proposed approach, an actual dataset of road transport sector in provinces of Iran is gathered and the results of the different models are analyzed.
Cham: Springer, 2026.
In this ambitious two-volume open access collection of essays, a diverse group of scholars worldwide reflects on the past, present and future of the (comparative) regionalism research program. Volume I provides building blocks for regionalism studies in the coming years by indicating what a pluralistic theoretical and methodological toolbox to study regions could look like, ...
Added: July 15, 2026
Karpova N. S., Союзное государство 2026 Т. 232 № 6, июнь С. 87–89
The article examines the peculiarities of the formation of Belarusian enterprises, the factors of their competitiveness, high export potential, and the culture of marketing work. The author raises the question of ways to strengthen integration processes within the Union State by understanding the competitive advantages of its participants, creating conditions for the growth of mutual ...
Added: July 14, 2026
Economies 2026 Vol. 14 No. 07 P. 277
The increasingly rapid process of de-dollarization in the context of growing geopolitical fragmentation has significantly altered the monetary dynamics of the global economy, thereby posing important questions about economic resilience and sustainable development in the emerging world. This research investigates de-dollarization-related macro-financial conditions and their association with economic resilience in the BRICS+ countries during the ...
Added: July 14, 2026
Абрамова И. О., Аду Я. Н., Анише Т. Э. et al., Институт Африки РАН, 2025.
Данная монография посвящена анализу концепции суверенитета африканских государств как в теоретическом, так и практическом ключе. Рассматриваются экономический, ментальный, языковой и культурный, информационный и образовательный аспекты африканского суверенитета. Исследуется роль региональных интеграционных группировок, а также внешних акторов в контексте суверенизации Африки. Особое внимание уделяется роли РФ в укре- плении суверенитета стран континента.
Монография формирует целостное представление по ...
Added: July 13, 2026
Grebnev L., Вопросы философии 2026 № 7 С. 5–15
In the coming millennium, the transformation of our world has become a matter
of global concern. The first attempts to move in this direction were unsuccessful.
The globalization of economic activity is being replaced by the formation of relatively
autonomous macroregions. But it would be a mistake to assume on this
basis that joint dominion over the entire planet ...
Added: July 11, 2026
Родичев А. И., Zinyakov Y., Вестник Московского университета. Серия 6: Экономика 2026 Т. 61 № 2 С. 340–357
This paper analyzes discrepancies between direct and mirror data in Russia's foreign trade statistics over the period of 2003-2024. Special attention is given to assessing the impact of sanction policies on the level of statistical discrepancies, which reflect trade costs, manipulations in customs and tax reporting, as well as structural changes in logistics and the ...
Added: July 10, 2026
Kuzminov Y., Kruchinskaia E., Вопросы экономики 2026 № 7 С. 5–23
The year 2026 marks the 250th anniversary of Adam Smith’s “An inquiry into the nature and causes of the wealth of nations”, the work that had laid the foundations of economic science. The three factors of production Smith implicitly introduced — labor, land, and capital — no longer operate in their pure form: the digital ...
Added: July 9, 2026
Sizova A., Барнаул: Алтайский государственный педагогический университет, 2026.
В сборник включены научные статьи, посвященные различным аспектам социально-экономической и культурной истории Сибири в контексте внутренней и внешней политики России. Сборник посвящен 70-летию со дня рождения известного ученого, педагога, просветителя и общественного деятеля, доктора исторических наук, профессора Александра Владимировича Старцева (1956–2019).
Сборник предназначен для специалистов в области отечественного исторического сибиреведения, а также всех, кто интересуется историей ...
Added: July 8, 2026
Besstremyannaya G., Кузнецова Ю., Прикладная эконометрика 2026 Т. 82 С. 26–46
This paper studies the technical efficiency of Russian retail companies in 2019 to 2023 using stochastic frontier analysis (SFA) with the Battese and Coelli (1995) model. A translogarithmic production function is employed for estimations. The dependent variable is company revenue, and the production factors are the average number of employees, fixed assets, and assets less ...
Added: July 8, 2026
Dormidontova Y., Central European Business Review 2026 Vol. 15 No. 2 P. 69–90
This study examines the individual factors of artificial intelligence (AI) implementation by small and medium-sized enterprise (SME) owners, based on a survey of 499 respondents in Russia. Drawing on Innovation Diffusion Theory, the Technology Acceptance Model (TAM), and stakeholder-oriented sustainability approach, the analysis shows that SME owners who already use AI for private purposes are ...
Added: July 7, 2026
Kozlov N., Semenova M., Journal of Corporate Finance Research 2026 Vol. 20 No. 2 P. 108–135
This paper introduces a novel approach to identifying and operationalizing political connections of banks. We manually code 2,598 bankers who owned or worked in 115 Russian banks between 2015 and 2021 to classify political connections and uncover their institutional patterns through cluster analysis. We propose a set of variables that capture the origins, relevance, and ...
Added: July 6, 2026
Grebnev L., Вопросы философии 2025 № 6 С. 105–116
The relevance of the topic is related to the fact that after the complete abandonment of real values in the 1970s of the main means of international settlements - the US dollar – there is a growing feeling that money increasingly represents an illusory reality. The article begins with an analysis of the illusions associated ...
Added: July 6, 2026
Volkova N., Кочетков Н. В., Чикер В. А., Психологическая наука и образование 2026 Т. 31 № 3 С. 35–49
Context and relevance. Artificial intelligence is a technology with the potential to fundamentally transform all spheres of human life. Its rapid integration into everyday reality intensifies research dedicated to the psychology of using neural networks. However, the development of empirical research in the Russian scientific field is limited by the lack of validated psychodiagnostic tools that ...
Added: July 5, 2026
Alekseeva O., Nazarova V., AlterEconomics (ранее - Журнал экономической теории) 2026 Т. 23 № 2 С. 329–354
IPO underpricing remains one of the most persistent anomalies in capital markets and is particularly pronounced in emerging markets, where information asymmetry and valuation uncertainty are especially high. This article examines the relationship between board gender composition and the level of IPO underpricing among Chinese companies. The study aims to assess whether a higher share ...
Added: July 4, 2026
Ershova N. V., Журнал институциональных исследований 2026 Т. 18 № 2 С. 82–97
This article, based on a survey data from 1,860 Russian manufacturing enterprises, analyzes the
scale of enterprise participation in science-industry collaboration (SIC), defines the characteristics of
enterprises that are more actively involved in SIC, and identifies regional institutional factors that
contribute to increased enterprise participation in SIC using correlation analysis. It is shown that
Russian manufacturing firms are very ...
Added: July 3, 2026
Podrugina A., Романова В. А., Пространственная экономика 2026 Т. 22 № 2 С. 56–85
Исследование посвящено анализу институциональных усилий развивающихся стран по дедолларизации и укреплению роли национальных валют. На основе систематизации теоретических подходов к интернационализации валют авторы разрабатывают новый аналитический инструмент – Индекс институционального развития финансового рынка в национальных валютах. Методология индекса охватывает четыре ключевых направления политики: использование валюты в международных расчетах, создание валютных своп-линий между центральными банками, развитие ...
Added: July 3, 2026
Anikeev K., AlterEconomics (ранее - Журнал экономической теории) 2026 Т. 23 № 2 С. 410–428
This study empirically tests the deposit channel hypothesis, which holds that increases in deposit markups cause liquidity outflows from the banking sector and a contraction in credit supply. The central question is whether deposit substitution effects, whereby depositors shift funds to other financial instruments during monetary tightening, are reflected in banks’ balance sheets and aggregate ...
Added: July 2, 2026
Yaroslav I. Kuzminov, Alexey S. Koshel, Ekaterina V. Kruchinskaia et al., BRICS Law Journal 2026 Vol. 13 No. 2 P. 5–36
Today’s economy is undergoing a fundamental institutional shift in which digital ecosystems have emerged not only as a key driver of development but also as a critical condition for market access for billions of users. Despite the rapid global proliferation of these phenomena, the evolution of legal regulation—from e-commerce and data protection to antitrust oversight ...
Added: July 2, 2026
Cham: Springer Publishing Company, 2026.
The four-volume set LNCS 16483-16486 constitutes the refereed conference proceedings of the 48th European Conference on Information Retrieval, ECIR 2026, held in Delft, The Netherlands, during March 29–April 2, 2026.
The 46 full papers and 37 short papers presented together with 10 findings papers, 9 reproducibility papers, 17 resource papers, 11 workshop papers, 7 tutorial papers, ...
Added: June 18, 2026
Minnigulova A., Dragoy O., Arutiunian V., European Child and Adolescent Psychiatry 2026
Communication deficits in Autism Spectrum Disorder (ASD) involve impairments in both verbal and nonverbal domains, potentially associated with altered brain network connectivity related to language, attention, and social cognition systems. This study investigated functional connectivity patterns among the Default Mode Network (DMN), Salience Network (SN), Dorsal Attention Network (DAN), and Language Network (LN) in male children ...
Added: June 18, 2026
Ключников И. К., Saakyan T. V., Финансовый журнал 2025 Т. 17 № 1 С. 74–91
Subject. Rationality and efficiency of budgeting state subsidies to business entities. Objectives. To develop a science-based system for assessing the rationality and effectiveness of the process of state subsidization of business entities. Results. The interrelation of rationality and efficiency of the process of budgeting subsidies to business entities is substantiated. Determination of the logic of ...
Added: June 1, 2026
Orlando G., Bufalo M., Nazarova V., Population Health Metrics 2025 Vol. 23 Article 71
The COVID-19 pandemic has disproportionately impacted vulnerable populations, such as low-income households, exacerbating existing health and economic challenges. In Cuba, the crisis exposed the effects of long-standing economic difficulties, worsened by sanctions, but the country’s robust public health system and independent vaccine development enabled an effective response. This study addresses the gap in understanding how ...
Added: February 3, 2026
Strimovskaya A., Китцман Х., Рюмкина К. А., Контроллинг 2024 № 3(93) С. 60–70
В статье дано обоснование значимости оценки эффективности транспортно-логистической деятельности на примере компании-экспортера жидких энергоресурсов России с учетом организации продаж, логистики, инновационной деятельности, а также достижения целей и задач устойчивого развития. Подробно рассмотрены ключевые особенности оценки эффективности, отмечены «узкие» места и возможные способы их оптимизации. Предложенный перечень показателей эффективности логистических операций, характерных для экспорта жидких энергоресурсов, ...
Added: January 16, 2026
A. S. Baybar, M. Yu. Puzachenko, R. B. Sandlersky, Geography and Natural Resources 2025 Vol. 46 No. S1 P. S15–S22
This article presents a methodology for landscape mapping based on the integration of long-term series of multispectral data and morphometric characteristics of the relief for various hierarchical levels. Using the example of the Central Forest Reserve and its adjacent territory, where both indigenous and anthropogenically modified geosystems are combined, it is shown that the identification ...
Added: January 14, 2026