scholarly journals Macro Scale Modelling of Wind Plants in Long Term Planning Studies - A Sri Lankan Case Study

2013 ◽  
Vol 46 (1) ◽  
pp. 11
Author(s):  
Anuradha Mudannayake ◽  
Rohan Lucas ◽  
Tilak Siyambalapitiya
Keyword(s):  
Sri Lankan ◽  
Macro Scale ◽  
Scale Modelling

scholarly journals Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants: a case study from a subarctic tundra heath

2016 ◽  
Vol 13 (24) ◽  
pp. 6651-6667 ◽  
Author(s):  
Jing Tang ◽  
Guy Schurgers ◽  
Hanna Valolahti ◽  
Patrick Faubert ◽  
Päivi Tiiva ◽  
...  
Keyword(s):  
Response Curve ◽  
Large Scale ◽  
Ecosystem Model ◽  
The Arctic ◽  
Short Term ◽  
Response Curves ◽  
Arctic Plants ◽  
Scale Modelling

Abstract. The Arctic is warming at twice the global average speed, and the warming-induced increases in biogenic volatile organic compounds (BVOCs) emissions from Arctic plants are expected to be drastic. The current global models' estimations of minimal BVOC emissions from the Arctic are based on very few observations and have been challenged increasingly by field data. This study applied a dynamic ecosystem model, LPJ-GUESS, as a platform to investigate short-term and long-term BVOC emission responses to Arctic climate warming. Field observations in a subarctic tundra heath with long-term (13-year) warming treatments were extensively used for parameterizing and evaluating BVOC-related processes (photosynthesis, emission responses to temperature and vegetation composition). We propose an adjusted temperature (T) response curve for Arctic plants with much stronger T sensitivity than the commonly used algorithms for large-scale modelling. The simulated emission responses to 2 °C warming between the adjusted and original T response curves were evaluated against the observed warming responses (WRs) at short-term scales. Moreover, the model responses to warming by 4 and 8 °C were also investigated as a sensitivity test. The model showed reasonable agreement to the observed vegetation CO2 fluxes in the main growing season as well as day-to-day variability of isoprene and monoterpene emissions. The observed relatively high WRs were better captured by the adjusted T response curve than by the common one. During 1999–2012, the modelled annual mean isoprene and monoterpene emissions were 20 and 8 mg C m−2 yr−1, with an increase by 55 and 57 % for 2 °C summertime warming, respectively. Warming by 4 and 8 °C for the same period further elevated isoprene emission for all years, but the impacts on monoterpene emissions levelled off during the last few years. At hour-day scale, the WRs seem to be strongly impacted by canopy air T, while at the day–year scale, the WRs are a combined effect of plant functional type (PFT) dynamics and instantaneous BVOC responses to warming. The identified challenges in estimating Arctic BVOC emissions are (1) correct leaf T estimation, (2) PFT parameterization accounting for plant emission features as well as physiological responses to warming, and (3) representation of long-term vegetation changes in the past and the future.

scholarly journals Modelling of Mini Hydro Plants in Long Term Planning Studies - A Sri Lankan case study

2013 ◽  
Vol 46 (1) ◽  
pp. 1
Author(s):  
Anuradha Mudannayake ◽  
Rohan Lucas ◽  
Tilak Siyambalapitiya
Keyword(s):  
Sri Lankan

scholarly journals A Case Study of Combined Drainage Consolidation-Preloading Methods for a Highway Subgrade on Peat Soils

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Yue Gui ◽  
Shengjun Liu ◽  
Xiaqiang Qin ◽  
Jianfei Wang
Keyword(s):  
Ground Improvement ◽  
Sri Lankan ◽  
Peat Soils ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains ◽  
Consolidation Coefficient ◽  
Gravel Pile ◽  
Insight Into

A highway project of up to 100 km/h is currently being constructed between Colombo and Katunayake International Airport across a Sri Lankan muskeg area. At this site, peat deposit was initially 0.8∼15.3 m thick and was underlain by sand, clay, or gneiss. The ground improvement methods adopted in the project were combined drainage consolidation-preloading methods, pipe pile foundation, and geogrids. This paper provides a detailed insight into the implementation of combined drainage consolidation-preloading methods used in the project, including sand pile, gravel pile, and plastic drainage plate as the prefabricated vertical drains. Periodical field-level observations were taken during the ten years, including the construction and postconstruction periods. The results show that peat soils’ consolidation coefficient has been increased several times to tens of times due to ground improvement. After removing the temporary surcharge, the highway embankments did not heave and was followed by long-term settlements totaling 1.3∼7.4 cm over the following seven years of observations. Analysis of the settlement records shows that combined drainage consolidation-preloading methods have helped accelerate drainage consolidation and reduce postconstruction settlement.

scholarly journals Case Study on Sustainability Projects of Sri Lankan Top-notch Apparel Company

2021 ◽  
Vol 04 (07) ◽  
Author(s):  
M.B.B.U. Mandawala ◽  
Keyword(s):  
Positive Impact ◽  
Sri Lankan ◽  
Development Environment ◽  
New Employees ◽  
Employee Recruitment ◽  
Health Community ◽  
Corporate Social ◽  
A Company

This case study is mainly focused on observing the Corporate Social Responsibility (CSR) of a top-notch apparel company in Sri Lanka. With this case study authors are expecting to study the willingness and capability of a business to engage in CSR projects and to observe the behaviour of such CSR projects in a selected company. At present, CSR is indeed one of the most debated and discussed topic. Therefore, the purpose of this project is to find out whether the CSR projects undertaken by a company would help to safeguard consumer’s preferences and reduced the poverty of the consumer. This study has discouraged authors to recognize that CSR has a positive impact on consumers’ behaviour. In many cases, these projects have enabled the company to recruit new employees to the business, thus reduced employee recruitment cost. The selected group’s principal CSR efforts are driven by the central corporate theme of water and are planned and executed by the “Bindu” Foundation established by the Group for the purpose. These efforts represent a long-term commitment to increasing the availability of water and the provision of safe drinking water to those most in need. Mainly, their CSR projects are based on categories such as; Education, Health, Community Live-hood Development, Environment, Arts and Culture. The company embrace following CSR projects under these categories. Ran Daru Thilina, Model Village, Blood Drive, P.A.C.E program, Care for Their Own project, and Rasadiya Mangallaya. Through these projects, this apparel leader aims to alleviate the poverty of the society, uplift the lifestyles of the employees and consumers, minimize the harm caused by the business, protect the environment and enhance their business reputation.

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.

Sign in / Sign up

Export Citation Format

Share Document