General Trends and New Perspectives on Landslide Mapping and Assessment Methods

Author(s):  
Murat Ercanoglu ◽  
Harun Sonmez

Landslides and their consequences are of great importance throughout the world and they constitute an important responsibility on the damages and fatalities among the natural or man-made hazards. Landslide mapping and assessment studies have become a very important issue for the geoscientists and the decision makers to prevent from the consequences of the landslides, particularly in the last decades. In addition to the increase in population and poor economic conditions, unconsciously built settlements, located in the landslide-prone areas, were the most influencing factors on these losses and damages sourced from the landslides. This section particularly focuses on the landslide mapping and assessment methods considering the chronological development of these methods. In addition, this section also summarizes the landslide inventory, susceptibility, hazard and risk concepts, considering the scientific landslide literature. Furthermore, past-actual trends and new perspectives on these issues were also compiled to show the readers how this subject emerged and evolved progressively.

Author(s):  
Murat Ercanoglu ◽  
Harun Sonmez

Landslides and their consequences are of great importance throughout the world and they constitute an important responsibility on the damages and fatalities among the natural or man-made hazards. Landslide mapping and assessment studies have become a very important issue for the geoscientists and the decision makers to prevent from the consequences of the landslides, particularly in the last decades. In addition to the increase in population and poor economic conditions, unconsciously built settlements, located in the landslide-prone areas, were the most influencing factors on these losses and damages sourced from the landslides. This section particularly focuses on the landslide mapping and assessment methods considering the chronological development of these methods. In addition, this section also summarizes the landslide inventory, susceptibility, hazard and risk concepts, considering the scientific landslide literature. Furthermore, past-actual trends and new perspectives on these issues were also compiled to show the readers how this subject emerged and evolved progressively.


Author(s):  
Kristian Svennevig ◽  
Gregor Lützenburg ◽  
Marie K. Keiding ◽  
Stig Asbjørn Schack Pedersen

The process of coastal erosion is well known to the public and decision-makers in Denmark; however, there is little awareness of the risks posed by larger landslides. Only a few scientific studies investigate landslides in Denmark, and as a result, the country is underrepresented in international landslide inventories. Here, we present a systematically produced preliminary landslide inventory based on digital elevation models and high-resolution orthophotos. So far, the preliminary inventory documents 3026 morphological expressions of landslides close to the coast and inland, showing that landslides are more widespread in Denmark than previously recognised. A number of these landslides are near buildings and infrastructure. This paper therefore highlights the potential for geohazardous landslides to occur in Denmark on a national scale and discusses some of the implications. Two of the major questions arising from this study are (1) how to approach potential geohazards in a country with no framework or precedence for landslide hazard and risk management and (2) how landslides and associated risk in Denmark will evolve under a changing climate.


2009 ◽  
pp. 4-25 ◽  
Author(s):  
B. Zamaraev ◽  
A. Kiyutsevskaya ◽  
A. Nazarova ◽  
E. Sukhanov

The article analyzes the current economic conditions in Russia. Succession, distribution and the transmission mechanism of the world financial and economic crisis to the Russian economy are considered in this article as well as the changes in the banking system, share and housing markets. Production, consumption and investment on the boundary of 2008-2009 are described. The conclusion about the basic change of conditions of national economy development is presented.


Author(s):  
В.Н. СУРОВЦЕВ ◽  
Е.Н. ПАЮРОВА

Проанализированы проблемы на рынке молока и молочных продуктов России в условиях глобального экономического кризиса: перепроизводство молока в основных странах-экспортерах, снижение закупочных цен на сырое молоко, снижение цен на биржевые товары в мире и России в 2020 году, тренд на уменьшение спроса на молочные продукты на мировом рынке в среднесрочном периоде, снижение общего спроса на молочные продукты на внутрироссийском рынке при падении реальных доходов населения, изменение структуры потребления. Проведена оценка новых возможностей и угроз для развития отрасли: со стороны потребителей — рост цен на продовольствие, снижение доходов; с позиции производителей молока — снижение закупочных цен, рост требований к сырью для производства продукции с увеличенными сроками годности, дефицит рабочей силы, вероятное сокращение господдержки в результате снижения цен на углеводороды, попытки регулирования цен; со стороны перерабатывающих предприятий — сокращение спроса, снижение цен на готовую продукцию вслед за мировыми ценами. Обоснованы приоритеты инвестирования в молочном скотоводстве и основные формы совершенствования государственной поддержки отрасли, обеспечивающие эффективную адаптацию производителей молока к новым экономическим условиям, повышение устойчивости отрасли при усилении макроэкономических рисков. The article analyzes the problems in the Russian milk and dairy products market in the context of the global economic crisis: overproduction of milk in the main exporting countries, lower purchase prices for raw milk, lower prices for commodities in the world and in Russia in 2020, trend to reduce demand for dairy products on the world market in medium term, a decrease in total demand for dairy products in the Russian market with a decrease in the purchasing power of the population, a change in the structure of consumption. An assessment of new opportunities and threats to the development of the industry was carried out: on the part of consumers — rising food prices, lower incomes; from the perspective of dairy producers — reduction in purchase prices, increased requirements for raw materials for the production of products with extended periods, labor shortages, the likely reduction in state support as a result of lower prices for hydrocarbons, attempts to regulate prices; on the part of processing enterprises — reduction of demand, reduction of prices for finished goods following world prices. The investment priorities in dairy cattle breeding and the main forms of improving state support for the industry, ensuring the effective adaptation of milk producers to new economic conditions, increasing the sustainability of the industry with increasing macroeconomic risks, are substantiated.


Mathematics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1385
Author(s):  
Irais Mora-Ochomogo ◽  
Marco Serrato ◽  
Jaime Mora-Vargas ◽  
Raha Akhavan-Tabatabaei

Natural disasters represent a latent threat for every country in the world. Due to climate change and other factors, statistics show that they continue to be on the rise. This situation presents a challenge for the communities and the humanitarian organizations to be better prepared and react faster to natural disasters. In some countries, in-kind donations represent a high percentage of the supply for the operations, which presents additional challenges. This research proposes a Markov Decision Process (MDP) model to resemble operations in collection centers, where in-kind donations are received, sorted, packed, and sent to the affected areas. The decision addressed is when to send a shipment considering the uncertainty of the donations’ supply and the demand, as well as the logistics costs and the penalty of unsatisfied demand. As a result of the MDP a Monotone Optimal Non-Decreasing Policy (MONDP) is proposed, which provides valuable insights for decision-makers within this field. Moreover, the necessary conditions to prove the existence of such MONDP are presented.


2021 ◽  
Vol 54 (1) ◽  
pp. 233-244
Author(s):  
Taha Radwan

Abstract The spread of the COVID-19 started in Wuhan on December 31, 2019, and a powerful outbreak of the disease occurred there. According to the latest data, more than 165 million cases of COVID-19 infection have been detected in the world (last update May 19, 2021). In this paper, we propose a statistical study of COVID-19 pandemic in Egypt. This study will help us to understand and study the evolution of this pandemic. Moreover, documenting of accurate data and taken policies in Egypt can help other countries to deal with this epidemic, and it will also be useful in the event that other similar viruses emerge in the future. We will apply a widely used model in order to predict the number of COVID-19 cases in the coming period, which is the autoregressive integrated moving average (ARIMA) model. This model depicts the present behaviour of variables through linear relationship with their past values. The expected results will enable us to provide appropriate advice to decision-makers in Egypt on how to deal with this epidemic.


2015 ◽  
Vol 15 (9) ◽  
pp. 2111-2126 ◽  
Author(s):  
M. Santangelo ◽  
I. Marchesini ◽  
F. Bucci ◽  
M. Cardinali ◽  
F. Fiorucci ◽  
...  

Abstract. Landslide inventory maps (LIMs) show where landslides have occurred in an area, and provide information useful to different types of landslide studies, including susceptibility and hazard modelling and validation, risk assessment, erosion analyses, and to evaluate relationships between landslides and geological settings. Despite recent technological advancements, visual interpretation of aerial photographs (API) remains the most common method to prepare LIMs. In this work, we present a new semi-automatic procedure that makes use of GIS technology for the digitization of landslide data obtained through API. To test the procedure, and to compare it to a consolidated landslide mapping method, we prepared two LIMs starting from the same set of landslide API data, which were digitized (a) manually adopting a consolidated visual transfer method, and (b) adopting our new semi-automatic procedure. Results indicate that the new semi-automatic procedure (a) increases the interpreter's overall efficiency by a factor of 2, (b) reduces significantly the subjectivity introduced by the visual (manual) transfer of the landslide information to the digital database, resulting in more accurate LIMs. With the new procedure, the landslide positional error decreases with increasing landslide size, following a power-law. We expect that our work will help adopt standards for transferring landslide information from the aerial photographs to a digital landslide map, contributing to the production of accurate landslide maps.


2020 ◽  
pp. 1-3
Author(s):  
Jaime Cuauhtémoc Negrete ◽  

In Mexico, agriculture is increasingly less profitable, due to this situation its contribution to the country’s economy decreases day by day, which has encouraged the import of food, thus causing poverty and migration, food dependency and other undesirable situations for the healthy development of society in general, not only the rural population but also the urban population is affected, so all the technologies that can change this scenario are sought and explored, one of them being Nanotechnology, despite the benefits of nanotechnology, as is always the case, it is not applied in agriculture as most of the most widely used technologies in the world today, such as mechatronics, and other modern technologies such as neural networks, Artificial vision, and internet of things , this is also happening with nanotechnology, De la Revision made only some Authors have done the rest of the research only publishing revisions of research done abroad, so it is proposed that decision makers support researchers who really do work on this discipline that is so promising at present for the good of our agriculture , this being the objective of this work will review what has been done in this field in this regard in the nation


2018 ◽  
Vol 1 (2) ◽  
pp. 15-25

It is expected that the price index numbers which are universally used as the scientific tool of measures of price changes all over the world must reflect the real and true position of prices in economy every time since they are the only arithmetic source of measuring the price fluctuations and economic fluctuations thereby. But unfortunately, they do not seem to fulfill these expectations fully especially in India. Many times it has happened that price index numbers have failed in reflecting real economic conditions through price changes. So, this research is attempt to study all the different price indices model and try to find out the effective way out.


2018 ◽  
Vol 7 (2) ◽  
pp. 113-119
Author(s):  
Radheshyam H. Gajghat ◽  
Chandrahas C. Handa

In the previous research, it was proved that there were so many factors like students’ personal characteristics, family background, learning habits, previous academic background, college environment etc. which influence directly or indirectly the performance of college students in their university examination. The number of such factors has been identified by studying the previous work carried out by different researchers in different geographical areas and boundaries of the world. In many researches, when the opinions of the students and teaching faculties has been taken for similar factors to know the importance of these factors, the significant differences was found in their opinion for some factors. This paper investigates and compares the faculties’ assumptions with the students’ perceptions for various influencing factors. The comparison is done on the basis of their ranking of mean values of the factors allocated by students and faculties independently as per the importance of factors and one way ANOVA is used to check the significance of differences in their opinion. The result shows that there are similarities in the opinions of both, faculties and students, for most of the factors. But for some factors the significant differences in their opinion is also observed. The result of this research can be used for enhancing the performance of students by improving the influencing factors rank-wise. Top ranked factors may be given higher priority. Also this study will provide a platform for continuing the debate on the importance of various influencing factors for engineering students.


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