scholarly journals Security aspects at airports and the willingness of passengers to travel abroad during a pandemic of the COVID-19 virus

2021 ◽  
Vol 6 (2) ◽  
pp. 11-23
Author(s):  
Milan Krivokuća ◽  
Vladimir Tomašević ◽  
Jelena Rajković
Keyword(s):  
Human Mobility ◽  
Air Traffic ◽  
Global Level ◽  
Short Term ◽  
Effective Measure ◽  
Passenger Traffic ◽  
Foreign Countries ◽  
Precautionary Measures ◽  
Travel Abroad ◽  
Restrictive Measures

The outbreak of COVID-19 coronavirus and appropriate precautions measures to limit its spread have clear impacts on human mobility globally. This has caused a reduction in the domestic and international volume of air passenger traffic and the readiness of passengers to decide to travel to foreign countries. Due to the global coronavirus crisis, most countries have introduced restrictive measures to limit the pandemic and limit the number of victims. Among the restrictive measures is the suspension of air traffic as an effective measure in reducing mobility at the global level in the short term, which results in a high socio-economic imbalance in both the long and short term. This paper deals with the examination of knowledge and application of precautionary measures at airports, safety and readiness of passengers to travel and their travel experiences.

scholarly journals Renewable Energy Deployment and COVID-19 Measures for Sustainable Development

2021 ◽  
Vol 13 (8) ◽  
pp. 4418
Author(s):  
Miraj Ahmed Bhuiyan ◽  
Jaehyung An ◽  
Alexey Mikhaylov ◽  
Nikita Moiseev ◽  
Mir Sayed Shah Danish
Keyword(s):  
Renewable Energy ◽  
Short Term Memory ◽  
External Environment ◽  
Energy Markets ◽  
Energy Market ◽  
Short Term ◽  
The United Kingdom ◽  
Long Short Term Memory ◽  
Restrictive Measures ◽  
The Impact

The main goal of this study is to evaluate the impact of restrictive measures introduced in connection with COVID-19 on consumption in renewable energy markets. The study will be based on the hypothesis that similar changes in human behavior can be expected in the future with the further spread of COVID-19 and/or the introduction of additional quarantine measures around the world. The analysis also yielded additional results. The strongest reductions in energy generation occurred in countries with a high percentage (more than 80%) of urban population (Brazil, USA, the United Kingdom and Germany). This study uses two models created with the Keras Long Short-Term Memory (Keras LSTM) Model, and 76 and 10 parameters are involved. This article suggests that various restrictive strategies reduced the sustainable demand for renewable energy and led to a drop in economic growth, slowing the growth of COVID-19 infections in 2020. It is unknown to what extent the observed slowdown in the spread from March 2020 to September 2020 due to the policy’s impact and not the interaction between the virus and the external environment. All renewable energy producers decreased the volume of renewable energy market supply in 2020 (except China).

scholarly journals Living With Bipolar Disorder in the Time of Covid-19: Biorhythms During the Severe Lockdown in Cagliari, Italy, and the Moderate Lockdown in Tunis, Tunisia

2021 ◽  
Vol 12 ◽  
Author(s):  
Mauro Giovanni Carta ◽  
Uta Ouali ◽  
Alessandra Perra ◽  
Azza Ben Cheikh Ahmed ◽  
Laura Boe ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Depressive Symptoms ◽  
Rating Scale ◽  
Biological Rhythms ◽  
Short Term ◽  
Female Age ◽  
Future Studies ◽  
Restrictive Measures ◽  
Depressive Episodes ◽  
Hamilton Rating Scale

Background: Restrictions during Covid-19 pandemic lockdown, in which rhythms of life have been compromised, can influence the course of bipolar disorder (BD). This study follows patients with bipolar disorder living in two geographically close cities (Cagliari and Tunis), but with different lockdown conditions: less severe in Tunis.Methods: Two cohorts were evaluated during lockdown (April 2020, t0) and 2 months later with lockdown lifted for a month (t1). Individuals were: over 18 years old without gender exclusion, BD I or II, in care for at least 1 year, received a clinical interview in the month before the start of the lockdown, stable clinically before the lockdown. The assessment was conducted by telephone by a psychiatrist or psychologist with good knowledge of patients. Diagnoses were made according to DSM-5 criteria. Depressive symptoms were collected through the Hamilton Rating Scale for Depression; cut-off 14 indicative of depressive episode. Circadian rhythms were measured using the BRIAN scale.Results: Forty individuals in Cagliari (70%female, age 48.57 ± 11.64) and 30 in Tunis (53.3% Female, age 41.8 ± 13.22) were recruited. In Cagliari at t0 45% had depressive episodes against none in Tunis, a similar difference appeared at t1. At t0 and t1 the Cagliari sample had more dysfunctional scores in the overall BRIAN scale and in the areas of sleep, activities and social rhythms; no differences were found in nutrition, both samples had predominantly nocturnal rhythm. In Cagliari at t0 and t1, the depressive sub-group showed more dysfunctional scores in the BRIAN areas sleep, activity, and nutrition. However, the differences in biological rhythms resulted, through ANCOVA analysis, independent of the co-presence of depressive symptoms.Discussion: A rigid lockdown could expose people with BD to depressive relapse through dysregulation of biological rhythms. The return to more functional rhythms did not appear 1 month after lockdown. The rekindling of the pandemic and the restoration of new restrictive measures will prevent, at least in the short term, the beneficial effect of a return to normality of the two cohorts.This was a limited exploratory study; future studies with larger samples and longer observational time are needed to verify the hypothesis.

scholarly journals Court Practice Analysis in Cases of Doping in Sport

2019 ◽  
pp. 93-101
Author(s):  
M. V. Degtyarev
Keyword(s):  
State Regulation ◽  
Legal Definition ◽  
Current State ◽  
Foreign Countries ◽  
New Challenges ◽  
Definition Of ◽  
Sports Doping ◽  
Restrictive Measures ◽  
Improve State ◽  
Court Practice

The paper is devoted to the study of the possibilities of developing conceptual approaches to create a legal definition of the concept of “sports-doping drug”. Foreign court practice is examined in order to identify legal positions that suggest ways to improve the definition of the concept of «sports doping». The author explains that in the field of preventing and eliminating the illegal use of doping in sport, the administrative potential of the current state regulation is exhaustive in the framework of the modern paradigm, it has limitations to improve the efficiency of administrative and restrictive measures. The paper describes a set of regulatory and empirical materials developed by the author to develop a theoretical framework for a homologated (for new challenges and requirements) legal definition of the term “sports doping agents”. The author gives a legal definition of this concept. The legislation of 33 foreign countries became the regulatory basis of the study. The court practice of 16 foreign countries became the empirical basis of the study. Based on the aforementioned regulatory and empirical foundations, using the methods indicated at the beginning of the paper, the author has developed an author’s conceptual and in-depth legal definition of the term “sports doping agents”, which can significantly improve state regulation in this field.

scholarly journals Impact of human mobility on the periodicities and mechanisms underlying measles dynamics

2015 ◽  
Vol 12 (104) ◽  
pp. 20141317 ◽  
Author(s):  
Ramona Marguta ◽  
Andrea Parisi
Keyword(s):  
Population Size ◽  
Parallel Computation ◽  
Human Mobility ◽  
Local Population ◽  
Sir Model ◽  
Global Level ◽  
Radiation Model ◽  
Stochastic Fluctuations ◽  
Measles Outbreaks ◽  
Disease Free

Three main mechanisms determining the dynamics of measles have been described in the literature: invasion in disease-free lands leading to import-dependent outbreaks, switching between annual and biennial attractors driven by seasonality, and amplification of stochastic fluctuations close to the endemic equilibrium. Here, we study the importance of the three mechanisms using a detailed geographical description of human mobility. We perform individual-based simulations of an SIR model using a gridded description of human settlements on top of which we implement human mobility according to the radiation model. Parallel computation permits detailed simulations of large areas. Focusing our research on the British Isles, we show that human mobility has an impact on the periodicity of measles outbreaks. Depending on the level of mobility, we observe at the global level multi-annual, annual or biennial cycles. The periodicity observed globally, however, differs from the local epidemic cycles: different locations show different mechanisms at work depending on both population size and mobility. As a result, the periodicities observed locally depend on the interplay between the local population size and human mobility.

Letters to the Editor

PEDIATRICS ◽  
1963 ◽  
Vol 32 (5) ◽  
pp. 938-939
Author(s):  
GEORGE M. WHEATLEY
Keyword(s):  
Child Health ◽  
Practical Problem ◽  
Short Term ◽  
Letters To The Editor ◽  
South Vietnam ◽  
Foreign Countries ◽  
International Child

Dr. Siebenthal's letter points up an important practical problem of which our Committee on International Child Health has been much aware ever since we began to function. There is a need for pediatricians to help in many foreign countries and in a variety of conditions including short-term assignments. The organization sponsoring short-term medical assignments with which I am most familiar is MEDICO. They have been quite successful in enlisting orthopods and gynecologists for one-month assignments, notably in Jordan and South Vietnam.

Meaningful Language and Cultural Experiences for Future Teachers in Puerto Rico

2016 ◽  
pp. 160-176
Author(s):  
Judith Cruzado-Guerrero ◽  
Gilda Martinez-Alba
Keyword(s):  
Puerto Rico ◽  
Study Abroad ◽  
Implementation Strategies ◽  
Lessons Learned ◽  
Teacher Preparation Program ◽  
Short Term ◽  
Short Term Study ◽  
Puerto Rican Culture ◽  
Travel Abroad ◽  
Study Abroad Program

The authors describe a faculty led study abroad program implemented in Puerto Rico. The short-term study abroad model highlights both design and implementation strategies for travel abroad. This chapter also focuses on the unique cultural and linguistic experiences in Puerto Rico which were planned for college students in an early childhood education teacher preparation program. The chapter addresses the strategies used to facilitate learning about Puerto Rican culture and languages, methods to support students learning dual languages and strategies for working with families, communities, and other professionals. The chapter concludes with lessons learned from this experience and emphasizes both issues and recommendations for faculty who are developing future short-term travel experiences.

scholarly journals Identifying Foreign Tourists’ Nationality from Mobility Traces via LSTM Neural Network and Location Embeddings

2019 ◽  
Vol 9 (14) ◽  
pp. 2861 ◽  
Author(s):  
Alessandro Crivellari ◽  
Euro Beinat
Keyword(s):  
Neural Network ◽  
Motion Tracking ◽  
Large Scale ◽  
Short Term Memory ◽  
Human Mobility ◽  
User Profiling ◽  
Personalized Recommendation ◽  
Mobility Patterns ◽  
Trajectory Data ◽  
Short Term

The interest in human mobility analysis has increased with the rapid growth of positioning technology and motion tracking, leading to a variety of studies based on trajectory recordings. Mapping the routes that people commonly perform was revealed to be very useful for location-based service applications, where individual mobility behaviors can potentially disclose meaningful information about each customer and be fruitfully used for personalized recommendation systems. This paper tackles a novel trajectory labeling problem related to the context of user profiling in “smart” tourism, inferring the nationality of individual users on the basis of their motion trajectories. In particular, we use large-scale motion traces of short-term foreign visitors as a way of detecting the nationality of individuals. This task is not trivial, relying on the hypothesis that foreign tourists of different nationalities may not only visit different locations, but also move in a different way between the same locations. The problem is defined as a multinomial classification with a few tens of classes (nationalities) and sparse location-based trajectory data. We hereby propose a machine learning-based methodology, consisting of a long short-term memory (LSTM) neural network trained on vector representations of locations, in order to capture the underlying semantics of user mobility patterns. Experiments conducted on a real-world big dataset demonstrate that our method achieves considerably higher performances than baseline and traditional approaches.

The Regulation of Air Traffic

1927 ◽  
Vol 31 (197) ◽  
pp. 411-419
Author(s):  
Cresswell Turner
Keyword(s):  
Present State ◽  
Horizontal Plane ◽  
Air Traffic ◽  
Civil Aviation ◽  
Passenger Traffic ◽  
State Of Affairs

Valuable lives and thousands of pounds worth of equipment are lost in collisions each year.The graphs of civil aviation traffic show that an accident in May of 1922 was followed in June by a drop in the average monthly passenger traffic of 325 passengers. A more serious accident in May, 1923, was followed by a drop in traffic during May and June of 750 passengers.There is thus every incentive to minimise the risk of collision as far as possible, if only from an economical standpoint, as apart from the humanitarian.Under the existing regulations there is danger of collision not only from all points of the compass in a horizontal plane—and, even at sea, with rules based on a thousand years’ experience, collisions are all too frequent—but from every conceivable direction of which the pilot is the unfortunate centre.Rule of the Air No. 29 is perhaps the best exposition of the present state of affairs in air navigation.

scholarly journals The Air Traffic Control Problem

1960 ◽  
Vol 13 (4) ◽  
pp. 470-472
Author(s):  
A. W. Southall ◽  
T. F. Peppitt
Keyword(s):  
Control Problem ◽  
Traffic Control ◽  
Air Traffic Control ◽  
Air Traffic ◽  
Short Term ◽  
Constant Power ◽  
Ground Speed ◽  
Traffic Pattern ◽  
Air Speed

On page 240 of the April Journal, Wing Commander Dickie pointed out that in traffic control as we know it today, it is ground-speed and not air-speed that really matters. As he says, it is not possible for the pilot to maintain a constant ground-speed and it is for this reason that I suggest the concept whereby individual aircraft maintain constant power which, in the short term, must give constant air-speed. Slight changes in power will maintain a planned traffic pattern on any one route at any one height. Individual speeds will of course be different, and overtaking will have to be arranged by divergencies of track or height.

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