Role of numerical modelling in the current practice of tunnel and cavern design for hydroelectric projects

2000 ◽  
Vol 63 (2) ◽  
pp. 65-75 ◽  
Author(s):  
Trish Wielandt ◽  
Jenny Strong

This article describes a literature review that examined the topic of the postdischarge compliance of individuals with prescribed adaptive equipment. Assisting individuals to accomplish tasks relevant to their activities of daily living and thereby achieve functional independence is central to the role of occupational therapy. The prescription of adaptive equipment is a frequently used intervention. The rationale for prescribing adaptive equipment is that it maximises a client's functional potential, allows for independence in activities of daily living and fosters confidence as a result of being able to accomplish such tasks. All studies that surveyed compliance with prescribed adaptive equipment between 1963 and 1996 were reviewed. The factors that reportedly affect compliance by individuals can be considered under five discrete categories: medical-related, client-related, equipment-related, assessment-related and training-related. On the basis of the findings of this literature review, recommendations are made for further research, specifically investigating methods that therapists could incorporate into current practice to address the problem of non-compliance with prescribed adaptive equipment.


2019 ◽  
Vol 23 (04) ◽  
pp. 1950031
Author(s):  
SIW M. FOSSTENLØKKEN

This paper explores the role of plans, as objects, in the formation of new innovation practice in organisations. A vocabulary for analysis is developed from innovation object theory. First, findings from an ethnographic study in a hospital organisation show that a plan serves several functions depending on its activation for use: a checklist of past practice (tertiary object), an opener for debates over current practice (secondary object) and a trigger for future practice development (primary object). Second, a framework is offered that shows how a plan supports different functionalities (evaluating, debating, further exploring) in a temporal dynamics of practice formation. Third, thus, plans play a significant role not only in planning activities, but also as connectors that shape and patch together pieces of past, present and future into what actually become new organisational practice. Finally, implications for innovation theory and management are drawn from these novel contributions.


2019 ◽  
Vol 2 (02) ◽  
Author(s):  
Eko Sumadi

This paper begins the discussion by examining the genealogy of al-Ghazali's thinking, then discussing ideas about his education, to attract its relevance to the current practice of moral education. There are several important points that are the result of this discussion; First, that al-Ghazali's intellectual journey in the search of truth is a very dynamic intellectual dialectic, although in the end, he overrides the ability of reason in seeking the ultimate truth, he has really optimized the role of reason by placing it in a very special position. Second, for al-Ghazali that the estuary of all educational activities is to get closer to Allah. Thus, among the reasons that made al-Ghazali identified as a conservative goalkeeper. Third, however many criticisms of al-Ghazali's concept of education, many of his ideas are still relevant today, especially in matters of character building and moral education.


2018 ◽  
Vol 36 (6) ◽  
pp. 1495-1505 ◽  
Author(s):  
Yury M. Timofeyev ◽  
Sergei P. Smyshlyaev ◽  
Yana A. Virolainen ◽  
Alexander S. Garkusha ◽  
Alexander V. Polyakov ◽  
...  

Abstract. Episodes of extremely low ozone columns were observed over the territory of Russia in the Arctic winter of 2015/2016 and the beginning of spring 2016. We compare total ozone columns (TOCs) from different remote sensing techniques (satellite and ground-based observations) with results of numerical modelling over the territory of the Urals and Siberia for this period. We demonstrate that the provided monitoring systems (including the new Russian Infrared Fourier Spectrometer IKFS-2) and modern three-dimensional atmospheric models can capture the observed TOC anomalies. However, the results of observations and modelling show differences of up to 20 %–30 % in TOC measurements. Analysis of the role of chemical and dynamical processes demonstrates that the observed short-term TOC variability is not a result of local photochemical loss initiated by heterogeneous halogen activation on particles of polar stratospheric clouds that formed under low temperatures in the mid-winter.


2018 ◽  
Vol 18 (19) ◽  
pp. 14393-14416 ◽  
Author(s):  
Melville E. Nicholls ◽  
Roger A. Pielke Sr. ◽  
Donavan Wheeler ◽  
Gustavo Carrio ◽  
Warren P. Smith

Abstract. Mid-tropospheric mesoscale convective vortices have been often observed to precede tropical cyclogenesis. Moreover, recent cloud-resolving numerical modelling studies that are initialized with a weak cyclonic mid-tropospheric vortex sometimes show a considerable intensification of the mid-level circulation prior to the development of the strong cyclonic surface winds that characterize tropical cyclogenesis. The objective of this two-part study is to determine the processes that lead to the development of a prominent mid-level vortex during a simulation of the transformation of a tropical disturbance into a tropical depression, in particular the role of diabatic heating and cooling. For simplicity simulations are initialized from a quiescent environment. In this first part, results of the numerical simulation are described and the response to stratiform components of the diabatic forcing is investigated. In the second part, the contribution of diabatic heating in convective cells to the development of the mid-level vortex is examined. Results show that after a period of intense convective activity, merging of anvils from numerous cells creates an expansive stratiform ice region in the upper troposphere, and at its base a mid-level inflow starts to develop. Subsequently conservation of angular momentum leads to strengthening of the mid-level circulation. A 12 h period of mid-level vortex intensification is examined during which the mid-level tangential winds become stronger than those at the surface. The main method employed to determine the role of diabatic forcing in causing the mid-level inflow is to diagnose it from the full physics simulation and then impose it in a simulation with hydrometeors removed and the microphysics scheme turned off. Removal of hydrometeors is achieved primarily through artificially increasing their fall speeds 3 h prior to the 12 h period. This results in a state that is in approximate gradient wind balance, with only a weak secondary circulation. Then, estimates of various components of the diabatic forcing are imposed as source terms in the thermodynamic equation in order to examine the circulations that they independently induce. Sublimation cooling at the base of the stratiform ice region is shown to be the main factor responsible for causing the strong mid-level vortex to develop, with smaller contributions from stratiform heating aloft and low-level melting and evaporation. This contrasts with the findings of previous studies of mid-latitude vortices that indicate sublimation plays a relatively minor role. An unanticipated result is that the central cool region that develops near the melting level is to a large degree due to compensating adiabatic ascent in response to descent driven by diabatic cooling adjacent to the central region, rather than in situ diabatic cooling. The mid-level inflow estimated from stratiform processes is notably weaker than for the full physics simulation, suggesting a moderate contribution from diabatic forcing in convective cells.


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