scholarly journals The Tefroid Deposits on an Active Stratovolkano Bezymianny (Kamchatka)

2021 ◽  
Vol 1 (3) ◽  
Author(s):  
PK Skuf’in
Keyword(s):  
Explosive Eruptions ◽  
Mountain Range ◽  
Clastic Material ◽  
Short Term ◽  
Fine Grained ◽  
Sedimentary Deposits ◽  
The World ◽  
Volcanic Processes ◽  
Fine Grained Material ◽  
Freely Moving

The article highlights the results of a study of volcanic processes on the large active stratovolcano Bezymyanny, located on the Eastern mountain range of Kamchatka, in the Klyuchevskoy group of Holocene volcanoes. It is one of the most active volcanoes in the world, characterized by continuous short-term explosive eruptions with powerful outbursts of ash material, accompanied by lava flows and the formation of extrusions. Among Russian and foreign volcanologists, this volcano became world famous on March 30, 1956, when a catastrophic eruption occurred, which in geological literature was called a "directed explosion" or "an eruption of the Bezymyanny type." In addition to volcanic structures, peculiar volcanic-sedimentary deposits of the volcano were also investigated, represented by the so-called tefroids, which are the product of the movement and washing of volcanic-clastic material of eruptions. Modern volcanological expeditions in Kamchatka and the Kuril Islands have made it possible to prove not only the synchronicity of the forming tefroid accumulations with volcanism, but also the extensive distribution of these rocks, which often prevail over volcanoterrigenous sediments. In all the modern volcanic regions studied in detail, a wide development of tefroid formations has been established. By age, tefroids develop from the early Precambrian to the present day. On the slopes of the volcano and in the area of development of dry streams, there is a constant movement of fine-grained material to the foot of the volcano. These freely moving material in the process of movement are sorted by size, roundness and form well-sustained thick tefroid layers. The volcano stands half submerged in these geologically instantaneously deposited tefroid strata.

The Long-term Use of Short-term Debt around the World

2019 ◽  
Author(s):  
Lifang Chen ◽  
Yong Li ◽  
Yizhong Wang ◽  
Bohui Zhang
Keyword(s):  
Short Term ◽  
The World

Comprehensive Effects of Short-Term Rental Platforms Across Hotel Types in U.S. and International Destinations

2021 ◽  
pp. 193896552110335
Author(s):  
John W. O’Neill ◽  
Jihwan Yeon
Keyword(s):  
Service Providers ◽  
Comprehensive Analysis ◽  
Competitive Market ◽  
Substitution Effects ◽  
Short Term ◽  
Hotel Performance ◽  
The World ◽  
Different Types ◽  
Location Type ◽  
The Impact

In recent years, short-term rental platforms in the lodging sector, including Airbnb, VRBO, and HomeAway, have received extensive attention and emerged as potentially alternative suppliers of services traditionally provided by established commercial accommodation providers, that is, hotels. Short-term rentals have dramatically increased the available supply of rooms for visitors to multiple international destinations, potentially siphoning demand away from hotels to short-term rental businesses. In a competitive market, an increase in supply with constant demand would negatively influence incumbent service providers. In this article, we examine the substitution effects of short-term rental supply on hotel performance in different cities around the world. Specifically, we comprehensively investigate the substitution effects of short-term rental supply on hotel performance based on hotel class, location type, and region. Furthermore, we segment the short-term rental supply based on its types of accommodations, that is, shared rooms, private rooms, and entire homes, and both examine and quantify the differential effects of these types of short-term rentals on different types of hotels. This study offers a comprehensive analysis regarding the impact of multiple short-term rental platforms on hotel performance and offers both conceptual and practical insights regarding the nature and extent of the effects that were identified.

scholarly journals Potential Impacts of Future Climate Change Scenarios on Ground Subsidence

Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 219 ◽  
Author(s):  
Antonio-Juan Collados-Lara ◽  
David Pulido-Velazquez ◽  
Rosa María Mateos ◽  
Pablo Ezquerro
Keyword(s):  
Climate Change ◽  
Land Subsidence ◽  
Ground Subsidence ◽  
Lower Percentage ◽  
Future Climate Change ◽  
Climate Change Scenarios ◽  
Fine Grained ◽  
Fine Grained Material ◽  
The Impact

In this work, we developed a new method to assess the impact of climate change (CC) scenarios on land subsidence related to groundwater level depletion in detrital aquifers. The main goal of this work was to propose a parsimonious approach that could be applied for any case study. We also evaluated the methodology in a case study, the Vega de Granada aquifer (southern Spain). Historical subsidence rates were estimated using remote sensing techniques (differential interferometric synthetic aperture radar, DInSAR). Local CC scenarios were generated by applying a bias correction approach. An equifeasible ensemble of the generated projections from different climatic models was also proposed. A simple water balance approach was applied to assess CC impacts on lumped global drawdowns due to future potential rainfall recharge and pumping. CC impacts were propagated to drawdowns within piezometers by applying the global delta change observed with the lumped assessment. Regression models were employed to estimate the impacts of these drawdowns in terms of land subsidence, as well as to analyze the influence of the fine-grained material in the aquifer. The results showed that a more linear behavior was observed for the cases with lower percentage of fine-grained material. The mean increase of the maximum subsidence rates in the considered wells for the future horizon (2016–2045) and the Representative Concentration Pathway (RCP) scenario 8.5 was 54%. The main advantage of the proposed method is its applicability in cases with limited information. It is also appropriate for the study of wide areas to identify potential hot spots where more exhaustive analyses should be performed. The method will allow sustainable adaptation strategies in vulnerable areas during drought-critical periods to be assessed.

Man and Nature in China

1967 ◽  
Vol 1 (4) ◽  
pp. 313-333 ◽  
Author(s):  
Rhoads Murphey
Keyword(s):  
Public Good ◽  
New Order ◽  
Short Term ◽  
Contemporary China ◽  
The Past ◽  
The World ◽  
Man And Nature ◽  
Individual Actions ◽  
Communist Past ◽  
Chinese View

After nearly two decades of revolutionary rule in China, the break with the past which Communist direction has seemed to represent is increasingly being seen in a wider perspective. Few scholars would attempt to argue that the Communists have not brought a genuine revolution or that their ascendancy is merely the equivalent of a new dynasty. But as the character of the new order has become clearer with time and as an analysis both more detailed and less concerned with short-term matters has become possible, many scholars have been as much impressed by continuities with the pre-Communist past as by discontinuities. To take perhaps the clearest example, the current Chinese view of their relation to the rest of the world appears to represent little change from the traditional Sinocentric image. Ideological absolutism is also not new to China with Mao Tse-tung, nor is the conception of individual subsevience to public good, the unquestioned rightness of close social limits on individual actions. And contemporary China retains, for all its professed egalitarianism, a strongly elitist and hierarchial pattern.

scholarly journals Planting Systems for Modern Olive Growing: Strengths and Weaknesses

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 494
Author(s):  
Riccardo Lo Bianco ◽  
Primo Proietti ◽  
Luca Regni ◽  
Tiziano Caruso
Keyword(s):  
Large Scale ◽  
New Technologies ◽  
Production Costs ◽  
Biotic And Abiotic Stress ◽  
Short Term ◽  
Mediterranean Countries ◽  
Social Concerns ◽  
The World ◽  
Fruit Growing ◽  
Cultivar Diversity

The objective of fully mechanizing olive harvesting has been pursued since the 1970s to cope with labor shortages and increasing production costs. Only in the last twenty years, after adopting super-intensive planting systems and developing appropriate straddle machines, a solution seems to have been found. The spread of super-intensive plantings, however, raises serious environmental and social concerns, mainly because of the small number of cultivars that are currently used (basically 2), compared to over 100 cultivars today cultivated on a large scale across the world. Olive growing, indeed, insists on over 11 million hectares. Despite its being located mostly in the Mediterranean countries, the numerous olive growing districts are characterized by deep differences in climate and soil and in the frequency and nature of environmental stress. To date, the olive has coped with biotic and abiotic stress thanks to the great cultivar diversity. Pending that new technologies supporting plant breeding will provide a wider number of cultivars suitable for super-intensive systems, in the short term, new growing models must be developed. New olive orchards will need to exploit cultivars currently present in various olive-growing areas and favor increasing productions that are environmentally, socially, and economically sustainable. As in fruit growing, we should focus on “pedestrian olive orchards”, based on trees with small canopies and whose top can be easily reached by people from the ground and by machines (from the side of the top) that can carry out, in a targeted way, pesticide treatments, pruning and harvesting.

scholarly journals From hierarchies to markets and partially back again in electricity: responding to decarbonization and security of supply goals

2021 ◽  
pp. 1-17
Author(s):  
Paul L. Joskow
Keyword(s):  
Market Integration ◽  
Investment Incentives ◽  
Wholesale Market ◽  
Security Of Supply ◽  
Short Term ◽  
Institutional Adaptation ◽  
The World ◽  
New Challenges ◽  
And Storage

Abstract Electric power sectors around the world have changed dramatically in the last 25 years as a result of sector liberalization policies. Many electricity sectors are now pursuing deep decarbonization goals which will entail replacing dispatchable fossil generation primarily with intermittent renewable generation (wind and solar) over the next 20–30 years. This transition creates new challenges for both short-term wholesale market design and investment incentives consistent with achieving both decarbonization commitments and security of supply criteria. Thinking broadly about the options for institutional change from a Williamsonian perspective – thinking like Williamson – provides a useful framework for examining institutional adaptation. Hybrid markets that combine ‘competition for the market’ that relies on competitive procurement for long-term purchased power agreements with wind, solar, and storage developers, ideally in a technology neutral fashion, and ‘competition in the market’ that relies on short-term markets designed to produce efficient and reliable operations of intermittent generation and storage, is identified as a promising direction for institutional adaptation. Many auction, contract, and market integration issues remain to be resolved.

Globalization of Economy: qualis es et quo vadis?

2011 ◽  
pp. 16-24
Author(s):  
V. Pan'kov
Keyword(s):  
World Economy ◽  
Historical Perspective ◽  
Transnational Corporations ◽  
Main Subject ◽  
Short Term ◽  
Positive Effects ◽  
Current State ◽  
The World ◽  
Quo Vadis ◽  
State Of Affairs

In a long historical perspective, the globalization of the economy is, no doubt, the future of the mankind. However, we should not overlook the contradiction that has dramatically intensified as a result of the 2008-2009 recession. This is the contradiction between globalization as an objective process with mostly positive effects and its model that is being implemented today (namely, the policy of globalization). Furthermore, we can propose a number of important arguments in favor of a statement that at the current state of affairs the globalization has exhausted itself. Nobody can exclude a short-term braking down of the globalization progress nor even a U-turn, albeit temporary, to a de-globalization. Under unfavorable circumstances such a reverse movement can cover the entire period up to 2020. The author states that transnational corporations are the main subject of the world economy which will the most actively oppose such a development.

FG-LiquID

2021 ◽  
Vol 5 (3) ◽  
pp. 1-27
Author(s):  
Yumeng Liang ◽  
Anfu Zhou ◽  
Huanhuan Zhang ◽  
Xinzhe Wen ◽  
Huadong Ma
Keyword(s):  
Alcohol Concentration ◽  
Coarse Grained ◽  
Robust Identification ◽  
Fine Grained ◽  
Fresh Milk ◽  
Average Accuracy ◽  
Coarse Grained Material ◽  
Potential Applications ◽  
Fine Grained Material ◽  
The Difference

Contact-less liquid identification via wireless sensing has diverse potential applications in our daily life, such as identifying alcohol content in liquids, distinguishing spoiled and fresh milk, and even detecting water contamination. Recent works have verified the feasibility of utilizing mmWave radar to perform coarse-grained material identification, e.g., discriminating liquid and carpet. However, they do not fully exploit the sensing limits of mmWave in terms of fine-grained material classification. In this paper, we propose FG-LiquID, an accurate and robust system for fine-grained liquid identification. To achieve the desired fine granularity, FG-LiquID first focuses on the small but informative region of the mmWave spectrum, so as to extract the most discriminative features of liquids. Then we design a novel neural network, which uncovers and leverages the hidden signal patterns across multiple antennas on mmWave sensors. In this way, FG-LiquID learns to calibrate signals and finally eliminate the adverse effect of location interference caused by minor displacement/rotation of the liquid container, which ensures robust identification towards daily usage scenarios. Extensive experimental results using a custom-build prototype demonstrate that FG-LiquID can accurately distinguish 30 different liquids with an average accuracy of 97%, under 5 different scenarios. More importantly, it can discriminate quite similar liquids, such as liquors with the difference of only 1% alcohol concentration by volume.

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