scholarly journals Presence of water on exomoons orbiting free-floating planets: a case study

2021 ◽  
pp. 1-12
Author(s):  
Patricio Javier Ávila ◽  
Tommaso Grassi ◽  
Stefano Bovino ◽  
Andrea Chiavassa ◽  
Barbara Ercolano ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Liquid Water ◽  
Galactic Centre ◽  
Orbital Parameters ◽  
Potential Development ◽  
Primordial Life ◽  
Thermal Stability Of ◽  
Final Amount

Abstract A free-floating planet (FFP) is a planetary-mass object that orbits around a non-stellar massive object (e.g. a brown dwarf) or around the Galactic Centre. The presence of exomoons orbiting FFPs has been theoretically predicted by several models. Under specific conditions, these moons are able to retain an atmosphere capable of ensuring the long-term thermal stability of liquid water on their surface. We model this environment with a one-dimensional radiative-convective code coupled to a gas-phase chemical network including cosmic rays and ion-neutral reactions. We find that, under specific conditions and assuming stable orbital parameters over time, liquid water can be formed on the surface of the exomoon. The final amount of water for an Earth-mass exomoon is smaller than the amount of water in Earth oceans, but enough to host the potential development of primordial life. The chemical equilibrium time-scale is controlled by cosmic rays, the main ionization driver in our model of the exomoon atmosphere.

scholarly journals Context Mapping for Integrated Urban Development in Nepal: A Case Study of Aathbiskot Municipality, Rukum

2018 ◽  
Vol 1 (2) ◽  
pp. 150-168
Author(s):  
Mahendra Sapkota
Keyword(s):  
Swot Analysis ◽  
Research Question ◽  
Development Opportunity ◽  
Potential Development ◽  
The Social ◽  
Epistemological Position ◽  
Integrated Urban Planning ◽  
Future Growth

The world is undergoing the largest wave of urban growth in history, particularly since 1950s that accelerated further after 2000s. However, Nepal is experiencing a new political system of federalism, it is yet to be equipped with appropriate Acts and policies to foster the spirit of development and constitution at large. In this context, the present study sets a research question as of how a context mapping can be done before integrated urban planning of the municipalities. Methodologically, the study was conducted in Aathbiskot municipality of Rukum district. Involving both qualitative and qualitative techniques under the social constructivist epistemological position, the study was conducted on the basis of participatory approach through analytical methods, including SWOT analysis, Trend analysis, Ward analysis and Linkage analysis. The findings show that as an aspiring city, Aathbiskot Municipality has diverse prospects and sectors of development that would drive its future growth but identifying some lead sectors and potential development opportunity of the municipality based on its own strength and individuality would what make municipality grow better and prosper. The study strongly claims inferences for the homogeneity in the long-term vision setting, however, maintaining through heterogeneity in the specific plans and strategies for the different wards of the municipality.

Caregivers' Perceptions of Speech-Language Pathologist Talk About Child Language and Literacy Disorders

2020 ◽  
Vol 29 (4) ◽  
pp. 2049-2067
Author(s):  
Karmen L. Porter ◽  
Janna B. Oetting ◽  
Loretta Pecchioni
Keyword(s):  
Language And Literacy ◽  
Collective Case Study ◽  
Study Approach ◽  
School Aged Children ◽  
Speech Language Pathologist ◽  
Therapy Goals ◽  
Semistructured Interviews ◽  
Types Of Information

Purpose This study examined caregiver perceptions of their child's language and literacy disorder as influenced by communications with their speech-language pathologist. Method The participants were 12 caregivers of 10 school-aged children with language and literacy disorders. Employing qualitative methods, a collective case study approach was utilized in which the caregiver(s) of each child represented one case. The data came from semistructured interviews, codes emerged directly from the caregivers' responses during the interviews, and multiple coding passes using ATLAS.ti software were made until themes were evident. These themes were then further validated by conducting clinical file reviews and follow-up interviews with the caregivers. Results Caregivers' comments focused on the types of information received or not received, as well as the clarity of the information. This included information regarding their child's diagnosis, the long-term consequences of their child's disorder, and the connection between language and reading. Although caregivers were adept at describing their child's difficulties and therapy goals/objectives, their comments indicated that they struggled to understand their child's disorder in a way that was meaningful to them and their child. Conclusions The findings showed the value caregivers place on receiving clear and timely diagnostic information, as well as the complexity associated with caregivers' understanding of language and literacy disorders. The findings are discussed in terms of changes that could be made in clinical practice to better support children with language and literacy disorders and their families.

Interrelationships between municipal spatial policy strategy and airport operation and development. Lodz Airport case study

2018 ◽  
Vol 59 (1) ◽  
pp. 65-79
Author(s):  
Katarzyna Nikorowicz-Zatorska
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Cultural Development ◽  
The Other ◽  
Local Authorities ◽  
Spatial Management ◽  
The One ◽  
Surrounding Areas

Abstract The present paper focuses on spatial management regulations in order to carry out investment in the field of airport facilities. The construction, upgrades, and maintenance of airports falls within the area of responsibility of local authorities. This task poses a great challenge in terms of organisation and finances. On the one hand, an active airport is a municipal landmark and drives local economic, social and cultural development, and on the other, the scale of investment often exceeds the capabilities of local authorities. The immediate environment of the airport determines its final use and prosperity. The objective of the paper is to review legislation that affects airports and the surrounding communities. The process of urban planning in Lodz and surrounding areas will be presented as a background to the problem of land use management in the vicinity of the airport. This paper seeks to address the following questions: if and how airports have affected urban planning in Lodz, does the land use around the airport prevent the development of Lodz Airport, and how has the situation changed over the time? It can be assumed that as a result of lack of experience, land resources and size of investments on one hand and legislative dissonance and peculiar practices on the other, aviation infrastructure in Lodz is designed to meet temporary needs and is characterised by achieving short-term goals. Cyclical problems are solved in an intermittent manner and involve all the municipal resources, so there’s little left to secure long-term investments.

Investigation of a New Approach to Predict Water Quality Extremes with a Case Study of Chemical Determinands in Stream Water

1991 ◽  
Vol 24 (6) ◽  
pp. 25-33
Author(s):  
A. J. Jakeman ◽  
P. G. Whitehead ◽  
A. Robson ◽  
J. A. Taylor ◽  
J. Bai
Keyword(s):  
Water Quality ◽  
Stream Water ◽  
Probability Distributions ◽  
Management Strategies ◽  
Hybrid Modelling ◽  
Trend Model ◽  
Environmental Extremes ◽  
Modelling Approach

The paper illustrates analysis of the assumptions of the statistical component of a hybrid modelling approach for predicting environmental extremes. This shows how to assess the applicability of the approach to water quality problems. The analysis involves data on stream acidity from the Birkenes catchment in Norway. The modelling approach is hybrid in that it uses: (1) a deterministic or process-based description to simulate (non-stationary) long term trend values of environmental variables, and (2) probability distributions which are superimposed on the trend values to characterise the frequency of shorter term concentrations. This permits assessment of management strategies and of sensitivity to climate variables by adjusting the values of major forcing variables in the trend model. Knowledge of the variability about the trend is provided by: (a) identification of an appropriate parametric form of the probability density function (pdf) of the environmental attribute (e.g. stream acidity variables) whose extremes are of interest, and (b) estimation of pdf parameters using the output of the trend model.

A Profile of Wine Tourism Entrepreneurs: Study in Portugal

2019 ◽  
Vol 6 (1) ◽  
pp. 25-39
Author(s):  
Adriana Backx Noronha Viana ◽  
Luísa Cagica Carvalho ◽  
Inna Sousa Paiva
Keyword(s):  
Qualitative Data ◽  
Qualitative Case Study ◽  
Innovation Capability ◽  
Critical Perspective ◽  
Case Study Methodology ◽  
Wine Tourism ◽  
Learning Capacity ◽  
Study Methodology

Background: Wine tourism is one of the tourism components adopted as part of Portugal’s strategy due to its eminence as a wine producer. Such strategy has received great prominence in recent years and aims to promote regional development from an economic, social, cultural and environmental perspective. The aim of this study was to understand the entrepreneur profile in this sector. Methods: The study uses a qualitative, case study methodology with data analysis and triangulation. In this study, a literature review of scientific studies was carried out on the scientific knowledge in the area of study from a critical perspective and an interview was conducted where qualitative data were collected. Results and Discussion: The entrepreneurs have shown the following characteristics: initiative, innovation capability, optimism, creativity, creative energy, tenacity, selfconfidence, capability for long term involvement with the project, and learning capacity. Conclusion: The study shows that most entrepreneurs state that they have established partnerships with other companies, particularly with restaurants, catering businesses, hotel units, tourism companies and companies that organize tours. This is one of the factors of economic importance recognized by another study which enables increased prominence of the company and widens the value of wine tourism.

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