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Elsevier Science
Resources policy

Elsevier Science

0301-4207

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    Valuable geoheritage resources: Potential versus exploitation

    Yashalova N.N.Ruban D.A.Mikhailenko A.V.
    11页
    查看更多>>摘要：? 2022 Elsevier LtdGeoheritage is an important geological resource, which can provide with various socio-economical benefits. Although much attention has been paid to its potential use, the actual patterns of this resource exploitation are yet to be fully understood. Mountainous Adygeya, a geologically-rich area of the Western Caucasus, is used for testing semi-quantitative, scoring-based approaches for documenting these patterns. It is established that the exploitation of the rich geoheritage resources of the study area remains limited, although the localities with the higher value tend to experience stronger exploitation. It appears that the geoheritage resources can be strongly heterogeneous in regard to their value and exploitation intensity. Presently, the anthropogenic pressure from this exploitation is chiefly low or moderate, but it may accelerate in the future. Development of special policy is necessary to make the geoheritage resource exploitation sustainable, and objectives, instruments, and functions of this policy are proposed.
      原文链接:
    • NSTL
    • Elsevier

    Oil price and economic performance: Additional evidence from advanced economies

    Adeosun O.A.Tabash M.I.Anagreh S.
    14页
    查看更多>>摘要：? 2022 Elsevier LtdThis study reexamines the causal relationship between oil price and economic performance (proxy by GDP returns) in seven selected advanced economies: Australia, Canada, China, the US, the UK, Japan, and Germany. We employ the homoscedastic and heteroscedastic-consistent versions of the Shi et al. (2020) bootstrap time-varying Granger causality to detect and date stamp causal changes in the relationship between oil price and GDP returns of the sample countries. Findings indicate bidirectional causality between oil price and economic performance for at least one month across all sample countries within notable global events such as the global financial crisis and the COVID-19 pandemic. The study also detects and date stamps long periods of causality running from the economic performances of Canada, China, the US, Japan, and Germany to oil prices using GDP returns as a predictor. The results indicate the weight and significance of the predictive power of the GDP growth of these economies in shaping the cyclical fluctuation of oil prices extending through pre and post COVID-19 epidemic. The findings inform some policy implications.
      原文链接:
    • NSTL
    • Elsevier

    Impact of financial instability on international crude oil volatility: New sight from a regime-switching framework

    Hong Y.Wang L.Liang C.Umar M....
    11页
    查看更多>>摘要：? 2022 Elsevier LtdIn this paper, we investigate the dynamic impact of financial stress on crude oil volatility by employing a time-varying transition probabilities Markov regime-switching GARCH model (TVTP-MS-GARCH). Different from the existing work, we mainly consider the possible nonlinearity and regime changes among crude oil volatility and financial stress. First, the in-sample results strongly support the existence of the potential regime switches among the two financial fundamentals. Second, compared with the symmetric TVTP-MS-GARCH model, the model based on an asymmetric framework shows a better predictive performance in the out-of-sample findings. It implies that the dynamic impact of financial stress on crude oil exhibits an asymmetric feature. Finally, our findings are robust to several alternative checks, including other lags of financial stress and estimated window size. Thus, it is necessary to focus on the dynamic changes of financial stress for accurately predicting crude oil volatility.
      原文链接:
    • NSTL
    • Elsevier

    Minero-petrographic characterization of stone materials used for the roman amphitheater of Eporedia (Ivrea, To): A scientific-dissemination proposal in the Cultural Heritage

    Storta E.Borghi A.Perotti L.Palomba M....
    16页
    查看更多>>摘要：? 2022 Elsevier LtdIvrea, the ancient Eporedia founded around 100–101 B.C. by the Romans, is a town where stone has always been the most widely used building material, characterizing the architectural identity of the city. In particular, an ancient Roman amphitheater built in stone materials is still preserved. A minero-petrographic study was carried out to identify the different stone materials and their provenance areas used in the masonry of the amphitheater. The origin of rock samples resulted essentially from local or nearby geological units, except for the Bardiglio marble (from Aosta Valley) recognized and found in the portions located towards the center of the arena. Among the local materials, the most used stones were gabbronorites and diorites of the Ivrea Verbano Mafic Complex, which crops out in the city of Ivrea itself. Other rocks used were granites and meta-granophyres from the Canavese Zone; diorites, gabbronorites and websterites from the Ivrea Verbano mafic Complex; acid granulites from the II Dioritic-Kinzigitic Zone; micaschists from the Eclogitic Micaschist Complex of the Sesia Zone; calcschists from the Piemonte Zone; orthogneiss from Dent Blanche klippen; Bardiglio Marble from the External Piemonte Zone. The walls of the amphitheater therefore represents an open air petrographic collection, representative of the Alpine orogeny. For this reason, a multimedia study of this monument, was carried out with the purpose of creating a GIS-Based geo-archaeological tour to increase the value of the heritage stone outcropping in the territory of Ivrea and the lower Aosta Valley.
      原文链接:
    • NSTL
    • Elsevier

    Natural resources endowment: What more does West Africa need in order to grow?

    Oluwaseyi Musibau H.Yanotti M.Olawale Shittu W.
    11页
    查看更多>>摘要：? 2022 Elsevier LtdNotwithstanding a huge deposit of natural resources in West Africa, the region has consistently recorded unimpressive economic performances, thus prompting an important question: what other things, besides resources endowment, does the region need in order to grow? In an attempt to look into this, we examine the roles of FDI, globalisation, and economic-governance alongside that of natural resources endowment on the growth of the West African economy. Using the panel ARDL technique on the West African data covering 1996–2016, we confirm that the impact of natural resources endowment on economic growth is significant and positive. Also, FDI exerts a positive effect on economic growth, while the coefficient of globalisation is mixed. Finally, we find that government effectiveness stimulates the growth of the region; it, however, reduces the positive effect of natural resources endowment while regulatory quality enhances the positive effect of natural resources endowment on economic growth. Given these findings, the governments of West African countries are enjoined to further promote the economic institutions of the states – entrench public and civil services efficiency, promote the formulation and strict implementation of regulations and sound policies – in order to promote both domestic and foreign (private) investments. Also, the governments of the West African states should key-in to the globalisation agenda by enhancing the competitiveness of local markets in order to compete meritoriously with foreign firms.
      原文链接:
    • NSTL
    • Elsevier

    A fast method to develop an optimal operational sublevel stope design

    Morales N.Mancilla D.Miranda R.Vallejos J....
    15页
    查看更多>>摘要：? 2022 Elsevier LtdDesigning a sublevel stoping mine is a challenging task that requires determining the best layout in terms of economic value while respecting geomechanical constraints that limit the stopes' shape. Because of its relevance and challenging aspects, many authors have proposed methods to approximate or compute optimal stope designs or to provide raw designs that can be used as a guideline. This paper follows previous approaches by approximating the shape of the stopes using the block model as support and working in two stages: first, an enumeration algorithm generates all valid stopes, and second, an optimization model selects the set of stopes with maximum value. However, our approach adds several improvements. Firstly, we ensure that the stopes generated in the first stage are profitable and geotechnically stable. Secondly, the mathematical model of the second stage incorporates the organization of stopes into drifts and levels, which yields a more operational layout. Thirdly, the approach is suitable for algorithmic and theoretical contributions: We propose a fast heuristic algorithm for the general case of the model but also show that in some cases, the optimization problem reduces to finding the shortest path in an ad-hoc graph; thus, its optimum can be computed efficiently. Fourthly, we test our approach on 4 block models involving 84,000 to over 3 million blocks, or about 53,000 to 13.5 million valid stopes, respectively. The resulting optimal layouts are not only operationally feasible, but optimal solutions can be found in less than 1 h using freely available linear programming solvers or in less than a second using a shortest-path algorithm when it applies. Finally, we performed sensibility analyses to assess the variability of the value and geometric location of optimal stopes showing that the solutions are robust and that even with perturbations of 20% in the economic values of the stopes, the value and tonnage of the optimal solutions do not change more than 0.4% and that in most cases, 95% of the extracted blocks remain the same.
      原文链接:
    • NSTL
    • Elsevier

    Sand ecologies, livelihoods and governance in Asia: A systematic scoping review

    Marschke M.Rousseau J.-F.
    11页
    查看更多>>摘要：? 2022 The AuthorsSand, gravel, and crushed rock – known as construction aggregates – are in high demand in the Asian region. Such demand is driven by high rates of urbanization, infrastructure development, and dam building: an unprecedented amount of sand is being extracted from the region's river, delta and estuary areas, only to be transported for infill or construction purposes elsewhere. This systematic scoping review examines the state of knowledge in the peer review literature on sand ecologies, livelihoods, and governance in Asia. We find that the literature mainly focuses on the ecological implications of sand mining, namely biotic and abiotic components: sand mining is linked with many forms of ecological degradation, although partial ecosystemic recovery may be possible when sand mining stops. In contrast, the limited analysis on livelihoods suggests that violence, work-related injuries, and precarious jobs are common for those working in the sand industry, with sand mining producing different types of work depending on the level of mechanization. We conclude by noting several gaps in the literature, including the narrow geographical focus (mainly India and China), the lack of attention to the intersection between sand mining and other anthropogenic disturbances, and the need to establish transparent sand governance processes within this region.
      原文链接:
    • NSTL
    • Elsevier

    Investigating economic growth and natural resource dependence: An asymmetric approach in developed and developing economies

    Yu Z.Ponce K.Khan S.A.R.Ponce P....
    13页
    查看更多>>摘要：? 2022 Elsevier LtdEconomic growth is one of the primary macroeconomic aggregates that governments seek to achieve due to the positive externalities it generates in a nation. Natural resources are one of those factors that can be seen as a blessing or a curse in determining economic growth. Nowadays, it has been shown that countries can base their economic growth on factors other than capital formation and the intensive use of the labour force. Therefore, this research aims to examine the causal link between economic growth and capital formation, the labour force, renewable energy and renewable energy, the technological innovation at a global level and in groups of countries classified according to their level of income, developed and developing countries. Next, second-generation econometric techniques have been used that control the cross-sectional dependence among the countries examined. Then, the long-term coefficients are examined using the Method of Moments Quantile Regression (MMQR). The results find that the regressor variables are positively associated with economic growth, showing heterogeneity in the various quantiles examined. In addition, there is variation in results when examining economic growth by groups of countries, which shows the intensive use of factors. The results obtained reveal several policy implications aimed at sustainable growth in the era of post-COVI-19.
      原文链接:
    • NSTL
    • Elsevier

    Volatility in mineral resource pricing causes ecological footprints: A cloud on the horizon

    Yang X.Anser M.K.Yusop Z.Abbas S....
    17页
    查看更多>>摘要：? 2022 Elsevier LtdMineral resource extraction and depletion dominate the resource conservation agenda, previously controlled by socioeconomic and environmental factors in various economic contexts. South Africa's economy is a resource-rich country that is primarily confronted with significant resource capital management challenges, which reduces its ability to use its endowed natural resources in exportable commodities. Using time-series data from 1975 to 2019, the study assessed key critical components that account for the ‘resource damage function,' including ecological footprints, industrialization, resource rents, and trade openness. The variables were chosen using Hotelling's principle, which states that resource prices are critical in determining whether to overextend natural resources or wait for higher prices in the future. As a result, resource rents are employed as resource prices. At the same time, ecological footprints, industrial value-added, and trade openness are used as biocapacity deficit factors, responsible consumption and production, and trade policies consistent with resource management theory. The findings indicate that mineral resource rents, ecological footprints, and trade openness are the most important predictors of the resource damage function, which exhausts mineral resources in the short and long term. On the other side, long-term economic development backed by sustainable production aids in advancing the resource conservation agenda. The elasticity estimates show that a 1% rise in mineral rents, ecological footprint, and trade openness leads to 1.089 percent, 0.725 percent, and 1.418 percent exhaustion of mineral resources. The estimations of causation verified the unidirectional link between ecological footprint and mineral resource depletion and resource rents. On the other hand, industrialization increases resource revenue and per capita income, and mineral rents and trade openness increases per capita income and ecological footprints. The incentive-based resource regulations are imperative to reduce ecological footprints and resource depletion.
      原文链接:
    • NSTL
    • Elsevier

    The relationship among oil prices volatility, inflation rate, and sustainable economic growth: Evidence from top oil importer and exporter countries

    Liu Y.Sharma P.Jain V.Shukla A....
    7页
    查看更多>>摘要：? 2022This study examines the relationship among oil price volatility, inflation rate, and economic growth among oil importers and exporters countries. Oil prices play a significant role in the energy markets and boost the economic growth of the overall economy. This study uses various diverse panel data assessors, including fixed impacts, bias-corrected least squares dummy factors (LSDVC), generalized methods of moments (GMM), feasible generalized least squares (FGLS), and random coefficients (RC) to investigate nexus among oil price volatility, inflation rate and economic growth in top importers and exporters countries. This study examines thirty years from 1990 to 2019. The primary findings indicate that oil price volatility has a negative and measurable huge effect on the financial development and economic growth of oil importer and exporter countries. Moreover, oil exporter countries are affected by oil cost vulnerability, notably such as, Norway and Canada.
      原文链接:
    • NSTL
    • Elsevier