Hasil untuk "Economic geography of the oceans (General)"

J. Hansen, M. Sato, L. Simons et al.

Improved knowledge of glacial-to-interglacial global temperature change yields Charney (fast-feedback) equilibrium climate sensitivity 1.2 ± 0.3°C (2σ) per W/m2, which is 4.8°C ± 1.2°C for doubled CO2. Consistent analysis of temperature over the full Cenozoic era—including ‘slow’ feedbacks by ice sheets and trace gases—supports this sensitivity and implies that CO2 was 300–350 ppm in the Pliocene and about 450 ppm at transition to a nearly ice-free planet, exposing unrealistic lethargy of ice sheet models. Equilibrium global warming for today’s GHG amount is 10°C, which is reduced to 8°C by today’s human-made aerosols. Equilibrium warming is not ‘committed’ warming; rapid phaseout of GHG emissions would prevent most equilibrium warming from occurring. However, decline of aerosol emissions since 2010 should increase the 1970–2010 global warming rate of 0.18°C per decade to a post-2010 rate of at least 0.27°C per decade. Thus, under the present geopolitical approach to GHG emissions, global warming will exceed 1.5°C in the 2020s and 2°C before 2050. Impacts on people and nature will accelerate as global warming increases hydrologic (weather) extremes. The enormity of consequences demands a return to Holocene-level global temperature. Required actions include: (1) a global increasing price on GHG emissions accompanied by development of abundant, affordable, dispatchable clean energy, (2) East-West cooperation in a way that accommodates developing world needs, and (3) intervention with Earth’s radiation imbalance to phase down today’s massive human-made ‘geo-transformation’ of Earth’s climate. Current political crises present an opportunity for reset, especially if young people can grasp their situation.

Urszula Malinowska, Katarzyna Halicka, George Lăzăroiu et al.

The purpose of the article is to provide insights into the current state of sustainability efforts within Polish higher education. It systematically assesses how Polish universities are integrating SDGs into their strategy frameworks, providing a critical understanding of their progress in aligning with global sustainability objectives. A systematic university documents review was based on web research of internet pages of all 103 Polish public academic universities. The analysis addresses the adopted implementation methodology, including time frames, monitoring, target indicators, areas of university activity and Sustainable Development Goals of "Transforming our World: The 2030 Agenda for Sustainable Development" covered by planned actions and methods of evaluating progress. The article also discusses the importance and benefits of implementing the concept of sustainable development at Polish universities. The findings can guide university administrators in refining their strategies to better align with global sustainability trends, ensuring that their institutions remain competitive and relevant.

Vidya Venkatesan, Aomawa L. Shields, Russell Deitrick et al.

Eccentric planets may spend a significant portion of their orbits at large distances from their host stars, where low temperatures can cause atmospheric CO2 to condense out onto the surface, similar to the polar ice caps on Mars. The radiative effects on the climates of these planets throughout their orbits would depend on the wavelength-dependent albedo of surface CO2 ice that may accumulate at or near apoastron and vary according to the spectral energy distribution of the host star. To explore these possible effects, we incorporated a CO2 ice-albedo parameterization into a one-dimensional energy balance climate model. With the inclusion of this parameterization, our simulations demonstrated that F-dwarf planets require 29% more orbit-averaged flux to thaw out of global water ice cover compared with simulations that solely use a traditional pure water ice-albedo parameterization. When no eccentricity is assumed, and host stars are varied, F-dwarf planets with higher bond albedos relative to their M-dwarf planet counterparts require 30% more orbit-averaged flux to exit a water snowball state. Additionally, the intense heat experienced at periastron aids eccentric planets in exiting a snowball state with a smaller increase in instellation compared with planets on circular orbits; this enables eccentric planets to exhibit warmer conditions along a broad range of instellation. This study emphasizes the significance of incorporating an albedo parameterization for the formation of CO2 ice into climate models to accurately assess the habitability of eccentric planets, as we show that, even at moderate eccentricities, planets with Earth-like atmospheres can reach surface temperatures cold enough for the condensation of CO2 onto their surfaces, as can planets receiving low amounts of instellation on circular orbits.

Anna Agnieszka Brzozowska, Justyna Łukomska-Szarek, Stanisław Brzezinski et al.

The article addresses the challenge of municipal waste management in Poland, which is a problem at the local level. Various aspects of municipal waste management are pointed out. Addresses the role of national and regional policies in the context of municipal waste management and the importance of implementing effective strategies and programmes that reflect local circumstances. The main objective of the study is to evaluate municipal waste management in the municipal management process. In order to implement it, a survey, a SWOT/TOWS analysis and an assessment of the relationship between the elements of the waste management system and the factors influencing the municipal management process were carried out. The district of Częstochowa was chosen for the study because of its largest area and, as well as the municipality of Częstochowa, which is the second most populous city with district rights in the Silesian Voivodship.

Vladimir Skavysh, Sofia Priazhkina, Diego Guala et al.

Computational methods both open the frontiers of economic analysis and serve as a bottleneck in what can be achieved. We are the first to study whether Quantum Monte Carlo (QMC) algorithm can improve the runtime of economic applications and challenges in doing so. We provide a detailed introduction to quantum computing and especially the QMC algorithm. Then, we illustrate how to formulate and encode into quantum circuits (a) a bank stress testing model with credit shocks and fire sales, (b) a neoclassical investment model solved with deep learning, and (c) a realistic macro model solved with deep neural networks. We discuss potential computational gains of QMC versus classical computing systems and present a few innovations in benchmarking QMC.

Y. Shuisky, G. V. Vykhovanetz, A. B. Murkalov

Problems Statement and Purpose. The article defines the intensification of the development of anthropogenic geomorphology as one of the important areas of geographical science in Ukraine. Until now, there is practically no geomorphological classification of anthropogenic relief forms in the coastal zone of the seas and on the coasts in fundamental works. This significantly inhibits the further development of this scientific direction and adversely affects practical factors. Review and analysis of the history of research on the development of anthropogenic geomorphology showed the beginning of the occurrence of anthropogenic relief many centuries ago. But this was addressed by only a few geographers and representatives of the authorities. Only with the advent of machine production and the progress of modern coastal development, geomorphologists recognized a separate morpholithogenesis. Even today, foreign authors generally pay little attention to geomorphological issues of the study of anthropogenic relief on oceanic and sea coasts. Data and Methods. Mainly own experience of geomorphological studies in different European countries was used. Additional material is borrowed from publications of domestic and foreign authors supplemented with illustrations. Synthesis, classification, comparative and geographic as well as cartographic methods are used. Actual illustrative and graphic materials are included. Results. The first attempt to classify the anthropogenic relief on the sea coasts of the non-tidal seas of Europe (Mediterranean, Black, Azov) in several groups is outlined according to purposes: a) port; b) navigational; c) coast guard; d) recreational; e) extractive; f) residential. We also allow the presence of coastal and marine anthropogenic relief forms of other purposes in different regions of the sea coast. Separate geomorphological taxa are distinguished within elementary forms. It was found that within individual groups and types, they are divided into longitudinal and transverse, active and passive, large and small, vertical and horizontal, surface, underwater and complex, purposeful and accompanying, according to the material from which they are built, with natural relief and without him, ancient and modern. Some few taxa and elementary forms can be included in two or three complex forms and assignment groups, which leads to violations of the logical principles of classification construction. But such are the features of not only coastal and marine but also other classifications of anthropogenic relief. The given classification has a generally important theoretical and practical significance in geomorphology: it will contribute to further development of the general theory of anthropogenic geomorphology; will provide a characteristic of various anthropogenic forms necessary during the design and economic development of coasts; will be included in the educational program for the geographic disciplines “Geomorphology” and “Coastal science”, which will relieve geographer students of a false understanding of anthropogenic relief in the system of the coastal and marine environment.

Economics and Environment

Aleksander Kiryluk, Joanna Kostecka

Rural areas are included in the concept of sustainable development, and they are characterised by a great variety of flora, fauna, and habitats; apart from the function of food production, they can fulfil numerous functions related to the protection and shaping of the environment. The paper characterises the impact of agriculture on the natural environment. Selected parameters of agricultural plant production were described for the European Union, the Netherlands, and Poland. Factors significant in the context of the United Nations Decade of Ecosystem Restoration (2021-2030) were indicated. The features of agriculture in Hajnówka county (where over 50% of the area is under protection) were selected as a reference point for the expected results, treating it as a model of an organisation for the harmonious development of agriculture in the 21st century. The study highlights the importance of biodiversity in rural areas for building a sustainable human welfare strategy. The use of ecosystem services will be permanent when the elements of the Decade of Ecosystem Restoration are widely disseminated and rooted in the civic consciousness of the inhabitants of Poland and similar spaces in Europe. This decade must be advertised as widely as possible for this to happen, writing about it in various contexts.

Jerzy Śleszyński

 This paper aims to highlight the absolute competitiveness between positive and normative economics. The article presents this controversy as a pretext to analyse a specific field of operation of ecological economics. The normative approach in the ecological economics is needed in the complex age of increasing deficits and confronting threats to biological and social sustainability. Reliable data from biology, physics, chemistry and medicine inform us what is dangerous. They also suggest directions of changes and their necessary scale. The normative approach, based on the guidelines from the basic natural sciences, allows for the creation of economic theories and models and then derives specific, quantitative premises for actions taken in the economy. The thesis of this article boils down to the statement that the effective involvement of ecological economics in the theoretical and practical solving of sustainable development problems is possible only through the use of the normative approach.

Oleg V. Pavlov, Jason M. Sardell

This chapter develops a feedback economic model that explains the rise of the Sicilian mafia in the 19th century. Grounded in economic theory, the model incorporates causal relationships between the mafia activities, predation, law enforcement, and the profitability of local businesses. Using computational experiments with the model, we explore how different factors and feedback effects impact the mafia activity levels. The model explains important historical observations such as the emergence of the mafia in wealthier regions and its absence in the poorer districts despite the greater levels of banditry.

Monu Yadav, Laxminarayan Das

This paper explores the features of cyclonic disturbances (CDs) in the North Indian Ocean (NIO) by utilizing data from 1990 to 2022. It investigates the occurrence rate of these disturbances and their effects on human and economic losses throughout the mentioned period. The analysis demonstrates a rising trend in the occurrence of CDs in the NIO. While there has been a slight decline in CD-related fatalities since 2015, but there has been a considerable increase in economic losses. These findings can be attributed to enhanced government initiatives in disaster prevention and mitigation in recent years, as well as rapid economic growth in regions prone to CDs. The study sheds light on the significance of addressing the impact of CDs on both human lives and economic stability in the NIO region.

Yerko Torres-Nova

Roughly speaking, the problem of geography asks for the existence of varieties of general type after we fix some invariants. In dimension $1$, where we fix the genus, the geography question is trivial, but already in dimension $2$, it becomes a hard problem in general. In higher dimensions, this problem is essentially wide open. In this paper, we focus on geography in dimension $3$. We generalize the techniques which compare the geography of surfaces with the geography of arrangements of curves via asymptotic constructions. In dimension $2$ this involves resolutions of cyclic quotient singularities and a certain asymptotic behavior of the associated Dedekind sums and continued fractions. We discuss the general situation with emphasis on dimension $3$, analyzing the singularities and various resolutions that show up, and proving results about the asymptotic behavior of the invariants we fix.

Matteo Straccamore, Vittorio Loreto, Pietro Gravino

Cities and metropolitan areas are major drivers of creativity and innovation in all possible sectors: scientific, technological, social, artistic, etc. The critical concentration and proximity of diverse mindsets and opportunities, supported by efficient infrastructures, enable new technologies and ideas to emerge, thrive, and trigger further innovation. Though this pattern seems well established, geography's role in the emergence and diffusion of new technologies still needs to be clarified. An additional important question concerns the identification of the innovation pathways of metropolitan areas. Here, we explore the factors that influence the spread of technology among metropolitan areas worldwide and how geography and political borders impact this process. Our evidence suggests that political geography has been highly important for the diffusion of innovation till around two decades ago, slowly declining afterwards in favour of a more global innovation ecosystem. Further, the visualisation of the evolution of countries and metropolitan areas in a 2d space of competitiveness and diversification reveals the existence of two main innovation pathways, discriminating between different strategies towards progress. Our work provides insights for policymakers seeking to promote economic growth and technological advancement through tailored investments in prioritarian innovation areas.

Meng Li, Wen Yuan, Wu Yuan et al.

Seyyed Ali Zeytoon Nejad Moosavian

Macroeconomics essentially discusses macroeconomic phenomena from the perspectives of various schools of economic thought, each of which takes different views on how macroeconomic agents make decisions and how the corresponding markets operate. Therefore, developing a clear, comprehensive understanding of how and in what ways these schools of economic thought differ is a key and a prerequisite for economics students to prosper academically and professionally in the discipline. This becomes even more crucial as economics students pursue their studies toward higher levels of education and graduate school, during which students are expected to attain higher levels of Bloom's taxonomy, including analysis, synthesis, evaluation, and creation. Teaching the distinctions and similarities of the two major schools of economic thought has never been an easy task to undertake in the classroom. Although the reason for such a hardship can be multi-fold, one reason has undoubtedly been students' lack of a holistic view on how the two mainstream economic schools of thought differ. There is strong evidence that students make smoother transition to higher levels of education after building up such groundwork, on which they can build further later on (e.g. Didia and Hasnat, 1998; Marcal and Roberts, 2001; Islam, et al., 2008; Green, et al., 2009; White, 2016). The paper starts with a visual spectrum of various schools of economic thought, and then narrows down the scope to the classical and Keynesian schools, i.e. the backbone of modern macroeconomics. Afterwards, a holistic table contrasts the two schools in terms of 50 aspects. Not only does this table help economics students enhance their comprehension, retention, and critical-thinking capability, it also benefits macroeconomic instructors to ...

A. Tedde, C. Grelet, P. Ho et al.

Simple Summary Dry matter intake, related to the number of nutrients available to an animal to meet its production and health needs, is crucial for the economic, environmental, and welfare management of dairy herds. Because the equipment required to weigh the ingested food at an individual level is not broadly available, we propose some new ways to approach the actual dry matter consumed by a dairy cow for a given day. To do so, we used regression models using parity (number of lactations), week of lactation, milk yield, milk mid-infrared spectrum, and prediction of bodyweight, fat, protein, lactose, and fatty acids content in milk. We chose these elements to predict individual dry matter intake because they are either easily accessible or routinely provided by regional dairy organizations (often called “dairy herd improvement” associations). We succeeded in producing a model whose dry matter intake predictions were moderately related to the actual values. Abstract We predicted dry matter intake of dairy cows using parity, week of lactation, milk yield, milk mid-infrared (MIR) spectrum, and MIR-based predictions of bodyweight, fat, protein, lactose, and fatty acids content in milk. The dataset comprised 10,711 samples of 534 dairy cows with a geographical diversity (Australia, Canada, Denmark, and Ireland). We set up partial least square (PLS) regressions with different constructs and a one-hidden-layer artificial neural network (ANN) using the highest contribution variables. In the ANN, we replaced the spectra with their projections to the 25 first PLS factors explaining 99% of the spectral variability to reduce the model complexity. Cow-independent 10 × 10-fold cross-validation (CV) achieved the best performance with root mean square errors (RMSECV) of 3.27 ± 0.08 kg for the PLS regression and 3.25 ± 0.13 kg for ANN. Although the available data were significantly different, we also performed a country-independent validation (CIV) to measure the models’ performance fairly. We found RMSECIV varying from 3.73 to 6.03 kg for PLS and 3.69 to 5.08 kg for ANN. Ultimately, based on the country-independent validation, we discussed the developed models’ performance with those achieved by the National Research Council’s equation.

Jasmine Sika Dewita

Global political, economic, and social dynamics in this modern era have shifted the interests of every nation from defense power acquirement to domination of resources. One of the richest of resources area is Indo-Pacific. There is still no international statute about the region’s territorial borders, but some powerful states compose their own version of the borders scheme, based on their own national interests. As general geographical consensus, the area ranges from Pacific Ocean, Indian Ocean, and the land areas within. The geopolitically strategic region contains plenteous potential to empower Blue Economy and shipping industry, but also appeals various maritime security issues like piracy, smuggling and illegal fishing. Indonesia as one of the Founding Fathers of ASEAN and located at the strategic point of international trade route, has lots of potential to be major player in Indo-Pacific. Indonesia needs to enhance its political role while defending Indo-Pacific security through defense diplomacy. This research is conducted using qualitative method, with literature resources from various books, international articles, government and news website. The result of this research explains about Indonesia participation on defense diplomacy in Indo-Pacific, including the activities, opportunities and challenges within, and Indonesia’s national interest in the defense diplomacy.Bahasa Indonesia Abstract: Dinamika politik, ekonomi, dan sosial global di era modern ini telah menggeser kepentingan setiap bangsa terhadap kekuatan pertahanan menjadi penguasaan sumber daya alam. Salah satu daerah yang kaya akan sumber daya adalah Indo-Pasifik. Masih belum ada undang-undang internasional tentang perbatasan teritorial kawasan, tetapi beberapa negara kuat yang menyusun skema perbatasan versi mereka sendiri, berdasarkan kepentingan nasional mereka sendiri. Sebagai konsensus geografis umum, wilayahnya berkisar dari Samudra Pasifik, Samudra Hindia, dan wilayah daratan di dalamnya. Kawasan yang secara geopolitik strategis ini memiliki potensi besar untuk pemberdayaan Ekonomi Biru atau industri perkapalan dan juga menarik berbagai masalah keamanan maritim seperti pembajakan, penyelundupan, dan penangkapan ikan ilegal. Indonesia sebagai salah satu Founding Fathers ASEAN dan terletak di titik strategis jalur perdagangan internasional, memiliki banyak potensi untuk menjadi pemain utama di Indo-Pasifik. Indonesia perlu meningkatkan peran politiknya sekaligus mempertahankan keamanan Indo-Pasifik melalui diplomasi pertahanan. Penelitian ini dilakukan dengan metode kualitatif, dengan sumber literatur dari berbagai buku, artikel internasional, pemerintah dan situs berita. Hasil penelitian ini menjelaskan tentang partisipasi Indonesia dalam diplomasi pertahanan di Indo-Pasifik, termasuk kegiatan, peluang dan tantangan di dalamnya, serta kepentingan nasional Indonesia dalam diplomasi pertahanan.

Oliver Richters

The analogies between economics and classical mechanics can be extended from constrained optimization to constrained dynamics by formalizing economic (constraint) forces and economic power in analogy to physical (constraint) forces in Lagrangian mechanics. In the differential-algebraic equation framework of General Constrained Dynamics (GCD), households, firms, banks, and the government employ forces to change economic variables according to their desire and their power to assert their interest. These ex-ante forces are completed by constraint forces from unanticipated system constraints to yield the ex-post dynamics. The flexible out-of-equilibrium model can combine Keynesian concepts such as the balance sheet approach and slow adaptation of prices and quantities with bounded rationality (gradient climbing) and interacting agents discussed in behavioral economics and agent-based models. The framework integrates some elements of different schools of thought and overcomes some restrictions inherent to optimization approaches, such as the assumption of markets operating in or close to equilibrium. Depending on the parameter choice for power relations and adaptation speeds, the model nevertheless can converge to a neoclassical equilibrium, and reacts to an austerity shock in a neoclassical or post-Keynesian way.

Anton Bondarev, Frank C. Krysiak

Most explanations of economic growth are based on knowledge spillovers, where the development of some technologies facilitates the enhancement of others. Empirical studies show that these spillovers can have a heterogeneous and rather complex structure. But, so far, little attention has been paid to the consequences of different structures of such cross-technology interactions: Is economic development more easily fostered by homogenous or heterogeneous interactions, by uni- or bidirectional spillovers? Using a detailed description of an r&d sector with cross-technology interactions embedded in a simple growth model, we analyse how the structure of spillovers influences growth prospects and growth patterns. We show that some type of interactions (e.g., one-way interactions) cannot induce exponential growth, whereas other structures can. Furthermore, depending on the structure of interactions, all or only some technologies will contribute to growth in the long run. Finally, some spillover structures can lead to complex growth patterns, such as technology transitions, where, over time, different technology clusters are the main engine of growth.

Fatemeh Kaveh-Yazdy, Sajjad Zarifzadeh

Economic Policy Uncertainty (EPU) is a critical indicator in economic studies, while it can be used to forecast a recession. Under higher levels of uncertainty, firms' owners cut their investment, which leads to a longer post-recession recovery. EPU index is computed by counting news articles containing pre-defined keywords related to policy-making and economy and convey uncertainty. Unfortunately, this method is sensitive to the original keyword set, its richness, and the news coverage. Thus, reproducing its results for different countries is challenging. In this paper, we propose an unsupervised text mining method that uses word-embedding representation space to select relevant keywords. This method is not strictly sensitive to the semantic similarity threshold applied to the word embedding vectors and does not require a pre-defined dictionary. Our experiments using a massive repository of Persian news show that the EPU series computed by the proposed method precisely follows major events affecting Iran's economy and is compatible with the World Uncertainty Index (WUI) of Iran.