scholarly journals Environmental extreme events detection: A survey

10.29007/jkzt ◽  
2019 ◽  
Author(s):  
Rakesh Matta ◽  
Rui Wu ◽  
Shanyue Guan
Keyword(s):  
Outlier Detection ◽  
Extreme Events ◽  
Driving Forces ◽  
Environmental Extremes ◽  
Problem Formulations ◽  
High Precipitation ◽  
Events Detection ◽  
Future Work ◽  
The Given ◽  
Environmental Extreme

The application of statistics in extreme events detection is quite diverse and leads to diverse formulations, which needs to be designed for the specific problem. Each formula needs to be tailored specifically to work with the available data in the given situation. This diversity is one of the driving forces of this survey towards identifying the most common mixture of components utilized in the analysis of environmental outlier detection. Indeed for some arbitrary applications, it may not always be possible to use off-the-shelf models due to the wide variations in problem formulations. In this paper, we summarize the statistical methods involved in the detection of environmental extremes such as wind ramps, high precipitation and extreme temperatures. Then we organize the discussion along different outlier detection types, present various outlier definitions, and briefly introduce the corresponding techniques. Environmental extreme events detection challenges and possible future work are also discussed.

scholarly journals Socio-environmental extremes: rethinking extraordinary events as outcomes of interacting biophysical and social systems

2019 ◽  
Author(s):  
Jennifer Balch ◽  
Virginia Iglesias ◽  
Anna Braswell ◽  
Matthew Rossi ◽  
Maxwell B Joseph ◽  
...  
Keyword(s):  
Extreme Events ◽  
Social Impact ◽  
Heat Waves ◽  
Social Systems ◽  
The United States ◽  
Future Research ◽  
High Exposure ◽  
Mitigation And Adaptation ◽  
Environmental Extremes ◽  
Analytical Approaches

Extreme droughts, heat waves, fires, hurricanes, floods, and landslides cause the largest losses in the United States, and globally, from natural hazards linked to weather and climate. There is evidence that the frequency of such extremes is increasing, particularly for heat waves, large fires, and intense precipitation, making better understanding of the probability and consequences of these events imperative. Further, these events are not isolated, but rather interact with each other, and with social and ecological vulnerability, to amplify impacts. Less is known about the nature and strength of these interactions. Natural and social science subfields frame extreme events with different definitions and analytical approaches, and most analyses neglect interactions and the subsequent novel extremes that can arise. Here we propose a framework for socio-environmental extremes, defined as extraordinary events that emerge from interactions among biophysical and social phenomena and have some degree of social impact. We review how different fields approach extremes as interacting phenomena and propose a synthetic framework for conceptualizing and defining extremes from both an environmental and social perspective. This approach recognizes multiple drivers and responses that yield extreme events and extreme outcomes, and reconciles the gap between understanding extremes as biophysical processes and their social underpinnings and impacts. We conclude with a future research agenda that adds clarity and direction to understanding the extreme events that matter to society. This agenda will help to identify where, when, and why communities may have high exposure and vulnerability to socio- environmental extremes—informing future mitigation and adaptation strategies.

scholarly journals An underactuated drift-free left-invariant control system on the Lie group ISO(3,1)

2019 ◽  
Vol 29 ◽  
pp. 01006
Author(s):  
Camelia Pop ◽  
Ioana Iosif
Keyword(s):  
Optimal Control ◽  
Lie Group ◽  
Sufficient Conditions ◽  
Fixed Time ◽  
Equilibrium States ◽  
Control Pair ◽  
The Maximum Principle ◽  
Invariant Control ◽  
Future Work ◽  
The Given

The purpose of our paper is to study a class of left-invariant, drift-free optimal control problem on the Lie group ISO(3,1). The left-invariant, drift-free optimal control problems involves finding a trajectory-control pair on ISO(3,1), which minimize a cost function and satisfies the given dynamical constrains and boundary conditions in a fixed time. The problem is lifted to the cotangent bundle T*G using the optimal Hamiltonian on G*, where the maximum principle yields the optimal control. We use energy methods (Arnold’s method, in this case) to give sufficient conditions fornonlinear stability of the equilibrium states. Around this equilibrium states we might be able to find the periodical orbits using Moser's theorem, as future work. For the some unstable equilibrium states, a quadratic control is considered in order to stabilize the dynamics.

scholarly journals A Case Study in Slovak Translators’ Training: English Loanwords

2021 ◽  
Vol 18 (3) ◽  
pp. 520-531
Author(s):  
Katarina Welnitzova ◽  
Eva Malá ◽  
Martina Pavlíková ◽  
Beáta Ďuračková
Keyword(s):  
Translation Studies ◽  
General Knowledge ◽  
Research Findings ◽  
Knowledge And Practice ◽  
Future Work ◽  
The Given ◽  
Slovak Language ◽  
Insight Into

The topic of English loanwords is discussed in various fields like, e.g. in linguistics or translatology. Translators are responsible for choosing adequate words in their translations so they often decide for the forms which seem to be the most appropriate for the given context. Education of future translators is highly challenging and demanding as students need to get general knowledge and practice for their future work. This study deals with the use of English loanwords and their different forms in Slovak journalistic texts. It presents the views of Slovak linguists on foreign words coming into the Slovak language, and shows how English loanwords are perceived by students of translation studies (N = 39) and professional translators (N = 21). These specific groups of language users tend to use loanwords when looking for adequate solutions in the process of translation, regarding different aspects of translation. Students and translators tend to use assimilated forms of English loanwords instead of their original forms and when considering the appropriate form of a loanword, they primarily take into account the reader and the comprehensibility of the text. The research findings show there is not a universal insight into the topic in the groups of students and translators so education in this area is inevitable.

scholarly journals Contextual Outlier Interpretation

2018 ◽  
Author(s):  
Ninghao Liu ◽  
Donghwa Shin ◽  
Xia Hu
Keyword(s):  
Outlier Detection ◽  
Experimental Results ◽  
The Given

While outlier detection has been intensively studied in many applications, interpretation is becoming increasingly important to help people trust and evaluate the developed detection models through providing intrinsic reasons why the given outliers are identified. It is a nontrivial task for interpreting the abnormality of outliers due to the distinct characteristics of different detection models, complicated structures of data in certain applications, and imbalanced distribution of outliers and normal instances. In addition, contexts where outliers locate, as well as the relation between outliers and the contexts, are usually overlooked in existing interpretation frameworks. To tackle the issues, in this paper, we propose a Contextual Outlier INterpretation (COIN) framework to explain the abnormality of outliers spotted by detectors. The interpretability of an outlier is achieved through three aspects, i.e., outlierness score, attributes that contribute to the abnormality, and contextual description of its neighborhoods. Experimental results on various types of datasets demonstrate the flexibility and effectiveness of the proposed framework.

scholarly journals Development of foreign language professional skills of chemistry specialty students

2020 ◽  
Vol 99 (3) ◽  
pp. 47-53
Author(s):  
U Kopzhasarova ◽  
◽  
D Sagatkarim ◽  
A Shaimerdenova ◽  
N Stanchiu ◽  
...  
Keyword(s):  
Foreign Language ◽  
Teaching And Learning ◽  
Communicative Skills ◽  
International Labor ◽  
Literary Sources ◽  
Language Classes ◽  
Language Communication ◽  
Independent Work ◽  
Future Work ◽  
The Given

The article focuses on the problem of the development of foreign language professional knowledge and skills of chemistry specialty students, which is acquiring special attention in the framework of growing role of foreign language communication in the professional work of modern specialists at the international labor market. The analysis of scientific literary sources on the problem under research has been carried out; in the framework of which specific features of foreign language teaching and learning process and also peculiarities of future work of chemistry specialty students have been revealed. Essential ways of the development and improvement of the foreign language communicative skills of future specialists in the chemical field, including methods and techniques used at professional foreign language classes with some practical examples have been considered. For improvement of independent work abilities and foreign-language professional communicative skills of students the authors suggest active methods and technologies aimed at problem setting and solving such as debates, discussions, business games, projects and case-study. In authors’ opinion one of the effective methods of teaching and learning a professional foreign language is CLIL technology, its advantages and some difficulties in application have been also analyzed in the given research paper.

scholarly journals SPOSOBY KSZTAŁCENIA NAUCZYCIELI JĘZYKÓW SPECJALISTYCZNYCH: OD RZECZYWISTOŚCI EDUKACYJNEJ DO ROZWIĄZAŃ SYSTEMOWYCH

Neofilolog ◽  
2019 ◽  
pp. 221-235
Author(s):  
Elżbieta Gajewska ◽  
Magdalena Sowa
Keyword(s):  
Learning Needs ◽  
Educational Context ◽  
Specific Character ◽  
Target Groups ◽  
Language For Specific Purposes ◽  
Educational Situation ◽  
Specialist Knowledge ◽  
Amount Of Knowledge ◽  
Future Work ◽  
The Given

The job of the teacher of Language for Specific Purposes (LSP) requires the ability to teach learners of diverse profiles. Diversity of target groups in training entails diversity of language and learning needs. This paper aims to answer the question: how should LSP teachers be educated so that they can fulfil these needs and expectations? It is suggested that this can be done by preparing and implementing a suitable teaching pro-gramme which takes into account the specific character of different edu-cational contexts. The reflections presented here are based on analysis of the Polish educational situation in LSP training. On the basis of these ob-servations, several practice-oriented proposals will be formulated, which could be implemented in the process of language teacher training. Con-sideration is given, among other issues, to the pedagogical instruction that future LSP teachers need (which depends on the educational context of their future work), the scope of specialist knowledge in the given field that they will find indispensable, and the amount of knowledge of discourse and genre analysis with which they have to be equipped.

EVALUATING CONSTRUCTION DEFECT MOBILE APPLICATION USING THINK ALOUD

2018 ◽  
Vol 3 (2) ◽  
pp. 162
Author(s):  
Zan Azma Nasruddin ◽  
Azleen Markom ◽  
Maslina Abdul Aziz ◽  
Pa'ezah Hamzah
Keyword(s):  
Mobile Application ◽  
Usability Evaluation ◽  
Mobile App ◽  
Think Aloud ◽  
Evaluation Technique ◽  
Defect Inspection ◽  
Design Improvement ◽  
Usability Problems ◽  
Future Work ◽  
The Given

Construction Defect mobile application (app) is used by Ministry of Defense's Construction Defect Inspection Team to help the team in recording construction defect. However, the mobile app has never been evaluated formally to identify any usability problems. The objectives of this study are to identify usability problems of Construction Defect mobile app using think aloud and to recommend design improvement of Construction Defect mobile app based on the identified usability problems. The think aloud study involved 15 participants. During the evaluation, every participant carried out the given tasks and gave his impressions as he went along the tasks. Three usability problems were identified. Some recommendations have been proposed to improve the design of Construction Defect mobile app. As for the future work, the study may be conducted using different usability evaluation technique.

Water resources management in central northern Namibia using empirically grounded modelling

2012 ◽  
Vol 2 (2) ◽  
pp. 112-123 ◽  
Author(s):  
M. Zimmermann
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Large Scale ◽  
Driving Forces ◽  
Saline Groundwater ◽  
Water Supply Management ◽  
External Water ◽  
High Precipitation ◽  
System Variables

In this paper, a new methodology for the analysis and assessment of water supply regimes is presented. The problems of water supply management in developing countries are multidimensional and interdependent. Conventional methods, which only deal with separated and isolated issues, are not appropriate to deal with these problems. The method presented here, however, can comprehend the whole system. Therefore, using this method, conclusions for the management of adapted institutional and technological transformations can be drawn. In this study, relevant system variables of a problem context are identified, and their interdependencies are assessed and interpreted. This is done by using a method of qualitative interview analysis (grounded theory) and a cybernetic modelling approach (sensitivity analysis). In doing so, it is possible to identify outstanding variables which are essential to understand the system. These variables reveal the weakest links, driving forces, systemic stabilisers and the sustainability indicators of the system. The case study area is the Cuvelai-Etosha-Basin in central northern Namibia where a large-scale water supply system has been established. The water supply in the region is determined by the dependence on external water resources, high precipitation variability, absence of perennial rivers, saline groundwater, population growth and urbanisation.

Logistics for City and Regional Planning

2018 ◽  
pp. 768-790
Author(s):  
Hermann Knoflacher
Keyword(s):  
Land Use ◽  
City Planning ◽  
Driving Forces ◽  
Physical Structure ◽  
The Other ◽  
Economy Of Scale ◽  
City And Regional Planning ◽  
Planning Methods ◽  
The Given ◽  
The City

Logistics in transport considers the physical structure of a city as given and tries to optimize the performance of companies or the transportation system within the given conditions. On the other side, companies choose their location under the given conditions and the expected changes and influence the structure of the city and its economy in a continuous way. City and transport planning methods have not considered these effects in their work so far and are therefore influenced by the driving forces of the economy of scale and demand oriented traffic growth. The introduction of principles of logistics into the early stages of land use and city planning would change the “given conditions” and open the path for a more sustainable development, with more pressure for innovation and fairness in the market.

Logistics for City and Regional Planning

2017 ◽  
pp. 317-339
Author(s):  
Hermann Knoflacher
Keyword(s):  
Land Use ◽  
City Planning ◽  
Driving Forces ◽  
Physical Structure ◽  
The Other ◽  
Economy Of Scale ◽  
City And Regional Planning ◽  
Planning Methods ◽  
The Given ◽  
The City

Logistics in transport considers the physical structure of a city as given and tries to optimize the performance of companies or the transportation system within the given conditions. On the other side, companies choose their location under the given conditions and the expected changes and influence the structure of the city and its economy in a continuous way. City and transport planning methods have not considered these effects in their work so far and are therefore influenced by the driving forces of the economy of scale and demand oriented traffic growth. The introduction of principles of logistics into the early stages of land use and city planning would change the “given conditions” and open the path for a more sustainable development, with more pressure for innovation and fairness in the market.

Sign in / Sign up

Export Citation Format

Share Document