scholarly journals FEATURES OF THE WORK OF INDUSTRIAL FENCES IN THE CONDITIONS OF THE FAR NORTH AND ANALYSIS OF TECHNOLOGIES FOR STRENGTHENING EXISTING

2021 ◽  
Vol 3 ◽  
pp. 84-88
Author(s):  
Alexander Grigoriev ◽  
Alexander Rytvin ◽  
Boris Melkov ◽  
Nadezhda Dmitrieva ◽  
Elena Strelnikova
Keyword(s):  
Computational Model ◽  
Far North ◽  
Actual Impact ◽  
The Impact

The paper focuses on the work of steel industrial fences in the conditions of the Far North, based on the results of the actual impact of snow masses. A computational model is developed for estimating the resulting stresses in the structure. Methods for assessing the impact of snow masses are proposed. The technologies of strengthening the existing fences are analyzed.

scholarly journals Design of a computational model for multi-body contact of deformable bodies in the flowing fluid

2018 ◽  
Vol 157 ◽  
pp. 02012 ◽  
Author(s):  
Marián Handrik ◽  
Milan Vaško
Keyword(s):  
Computational Model ◽  
Time Intervals ◽  
Flowing Fluid ◽  
Body Contact ◽  
Impact Area ◽  
Deformable Bodies ◽  
Multi Body ◽  
The Impact ◽  
Design And Testing

The article deals with the design and testing of a computational model for multi-body contact of deformable bodies in the flowing fluid. The computational model will be designed to allow easy modify the impact area of deformable bodies and their shape. The computational model must allow the application of an endless cycle of bodies impact with the possibility of restarting and calculating the following time intervals for collision of bodies.

scholarly journals Celestial Aspects of Hittite Religion, Part 2: Cosmic Symbolism at Yazilikaya

2021 ◽  
Author(s):  
Eberhard Zangger ◽  
E.C. Krupp ◽  
Serkan Demirel ◽  
Rita Gautschy
Keyword(s):  
Bronze Age ◽  
Central Anatolia ◽  
Astronomical Observation ◽  
Main Chamber ◽  
Far North ◽  
The World ◽  
The Impact ◽  
Symbolic Image ◽  
The Bronze Age ◽  
Central Panel

Evidence of systematic astronomical observation and the impact of celestial knowledge on culture is plentiful in the Bronze Age societies of Egypt, Mesopotamia and Europe. An interest in astral phenomena is also reflected in Hittite documents, architecture and art. The rock-cut reliefs of 64 deities in the main chamber of Yazilikaya, a Hittite rock sanctuary associated with Hattusa, the Hittite capital in central Anatolia, can be broken into groups marking days, synodic months and solar years. Here, we suggest that the sanctuary in its entirety represents a symbolic image of the cosmos, including its static levels (earth, sky, underworld) and the cyclical processes of renewal and rebirth (day/night, lunar phases, summer/winter). Static levels and celestial cyclicities are emphasised throughout the sanctuary – every single relief relates to this system. We interpret the central panel with the supreme deities, at the far north end of Chamber A, as a reference to the northern stars, the circumpolar realm and the world axis. Chamber B seems to symbolise the netherworld.

scholarly journals The Impact of Agile Transformations on Organizational Performance: A Survey of Teams, Programs and Portfolios

2021 ◽  
pp. 86-102
Author(s):  
Christoph Johann Stettina ◽  
Victor van Els ◽  
Job Croonenberg ◽  
Joost Visser
Keyword(s):  
Organizational Performance ◽  
Employee Satisfaction ◽  
International Survey ◽  
Organizational Benefits ◽  
Actual Impact ◽  
The Impact ◽  
Larger Sample ◽  
Insight Into

AbstractWhile many organizations embark on agile transformations, they can lack insight into the actual impact of these transformations across organizational layers. In this paper, we collect new and study existing evidence on the impact of agile transformations on organizational performance across teams, programs and portfolios. We conducted an international survey collecting the perceptions of agile coaches, transformation leads and other relevant roles, and we correlated levels of agile maturity to the perceptions on dimensions of organizational performance. Based on 134 responses from 29 countries across 16 industries, (1) we consolidated understanding of the benefits of agile transformations based on prior evidence and our data from a more diverse and larger sample, (2) we identified the dimensions impacted by agile transformations as being productivity, responsiveness, quality, workflow health and employee satisfaction & engagement and (3) we traced specific benefits on those dimensions to individual organizational layers of teams, programs and portfolios, showing the magnitude of impact of each dimension per layer. Overall, we can conclude that agile transformations have a variety of strong organizational benefits. This aggregated evidence allows reflection on transformation trends, but also enables organizations to optimize their agile transformation efforts.

scholarly journals Numerical Parametric Study of Paravalvular Leak Following a Transcatheter Aortic Valve Deployment Into a Patient-Specific Aortic Root

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Wenbin Mao ◽  
Qian Wang ◽  
Susheel Kodali ◽  
Wei Sun
Keyword(s):  
Aortic Valve ◽  
Computational Model ◽  
Aortic Root ◽  
Paravalvular Leak ◽  
Patient Specific ◽  
Fe Method ◽  
Transcatheter Aortic Valve ◽  
Operative Planning ◽  
The Difference ◽  
The Impact

Paravalvular leak (PVL) is a relatively frequent complication after transcatheter aortic valve replacement (TAVR) with increased mortality. Currently, there is no effective method to pre-operatively predict and prevent PVL. In this study, we developed a computational model to predict the severity of PVL after TAVR. Nonlinear finite element (FE) method was used to simulate a self-expandable CoreValve deployment into a patient-specific aortic root, specified with human material properties of aortic tissues. Subsequently, computational fluid dynamics (CFD) simulations were performed using the post-TAVR geometries from the FE simulation, and a parametric investigation of the impact of the transcatheter aortic valve (TAV) skirt shape, TAV orientation, and deployment height on PVL was conducted. The predicted PVL was in good agreement with the echocardiography data. Due to the scallop shape of CoreValve skirt, the difference of PVL due to TAV orientation can be as large as 40%. Although the stent thickness is small compared to the aortic annulus size, we found that inappropriate modeling of it can lead to an underestimation of PVL up to 10 ml/beat. Moreover, the deployment height could significantly alter the extent and the distribution of regurgitant jets, which results in a change of leaking volume up to 70%. Further investigation in a large cohort of patients is warranted to verify the accuracy of our model. This study demonstrated that a rigorously developed patient-specific computational model can provide useful insights into underlying mechanisms causing PVL and potentially assist in pre-operative planning for TAVR to minimize PVL.

A Mechanistic Motor-Clutch Model That Explains Cell Shape Dynamics to Cyclic Stretch

2022 ◽  
Author(s):  
Benjamin W. Scandling ◽  
Jia Gou ◽  
Jessica Thomas ◽  
Jacqueline Xuan ◽  
Chuan Xue ◽  
...  
Keyword(s):  
Computational Model ◽  
Computational Models ◽  
The Body ◽  
Cyclic Stretch ◽  
Substrate Stiffness ◽  
Cell Alignment ◽  
Cellular Mechanisms ◽  
Actin Bundles ◽  
The Impact

Many cells in the body experience cyclic mechanical loading, which can impact cellular processes and morphology. In vitro studies often report that cells reorient in response to cyclic stretch of their substrate. To explore cellular mechanisms involved in this reorientation, a computational model was developed by utilizing the previous computational models of the actin-myosin-integrin motor-clutch system developed by others. The computational model predicts that under most conditions, actin bundles align perpendicular to the direction of applied cyclic stretch, but under specific conditions, such as low substrate stiffness, actin bundles align parallel to the direction of stretch. The model also predicts that stretch frequency impacts the rate of reorientation, and that proper myosin function is critical in the reorientation response. These computational predictions are consistent with reports from the literature and new experimental results presented here. The model suggests that the impact of different stretching conditions (stretch type, amplitude, frequency, substrate stiffness, etc.) on the direction of cell alignment can largely be understood by considering their impact on cell-substrate detachment events, specifically whether detachment occurs during stretching or relaxing of the substrate.

Thermal Design of Pipelines – A Challenge for Flow Assurance in the Arctic

2021 ◽  
Author(s):  
Veerendhar Ponagandla ◽  
Liangjian Liu ◽  
Duane DeGeer
Keyword(s):  
Heat Loss ◽  
Optimal Solution ◽  
Thermal Design ◽  
The Arctic ◽  
Flow Assurance ◽  
Mackenzie Delta ◽  
Far North ◽  
Hypothetical Scenario ◽  
Surface Ice ◽  
The Impact

Abstract Increasing demand for energy is driving the need to explore the deeper oceans and the far north. While higher temperature, pressure and longer tie-backs are challenges going deep, highly sensitive environment is an issue exploring far north. The discovery of large reserves in the far north has brought the challenges of exploration, production, and transportation in the cold regions like Prudhoe Bay, the Mackenzie Delta, and the Arctic Islands into focus. To transport hydrocarbons to market, pipelines used in the Arctic have unique challenges and stringent design conditions that must be met to ensure reliable operations in such remote and sensitive environments. To avoid flow assurance risks, the adage “the hotter the better” is in stark contrast to the sensitive nature of the Arctic environment to temperature changes, and where “the colder the better” is more appropriate. Permafrost, and its potential disturbance, is the most important factor to be considered for pipeline thermal design. High temperatures can disturb the in-situ state of the permafrost, causing settlement and instability in the permafrost zone. Also, high pipeline temperatures demand deep trenches to avoid melting the surface ice, challenging installation and increasing CAPEX. Designing the pipeline to maintain high internal fluid temperatures to reduce flow assurance risks and lower pipeline outer temperatures to minimize the impact on the environment is the best solution. To maintain high fluid temperatures and reduce heat loss to the environment, the conventional idea of a high value insulation like pipe-in-pipe with a vacuum annulus to avoid heat loss to the sensitive Arctic surroundings may seem to be a good solution, but it may not be the optimal solution. This paper discusses a hypothetical scenario (based on field cases) of a multiphase pipeline design and highlights the associated flow assurance/operational risks.

The Impact of Daikyo as a Foreign Investor on the Cairns — Far North Queensland Regional Economy

1998 ◽  
Vol 30 (1) ◽  
pp. 161-179 ◽  
Author(s):  
R J Stimson ◽  
O H Jenkins ◽  
B H Roberts ◽  
M T Daly
Keyword(s):  
Foreign Investment ◽  
Regional Economy ◽  
Foreign Investor ◽  
Regional Economies ◽  
Output Analysis ◽  
Input Output Analysis ◽  
Far North ◽  
Regional Production ◽  
Industry Sectors ◽  
The Impact

Foreign investment has played a major role in the development of tourism in the Cairns-Far North Queensland region of Australia, one of the nation's most internationalised regional economies. As the owner of a significant number of hotels and tourism operations, the Daikyo Corporation from Japan is the major foreign player, contributing substantially to employment and regional production. In this paper we use input-output analysis to estimate the contribution of Daikyo to the regional economy, which is shown to be positive and considerably greater in its export-to-import ratio effects, than is the case for the total industry sectors.

Dynamic Performance of Hydraulic Buffers of Unequal Rating in Series

1981 ◽  
Vol 23 (5) ◽  
pp. 221-224
Author(s):  
M. J. O'Carroll
Keyword(s):  
Dynamic Performance ◽  
Work Load ◽  
High Peak ◽  
Actual Impact ◽  
In Series ◽  
Design Value ◽  
The Impact ◽  
Impact Mass

Standard hydraulic buffers are designed to produce a nearly uniform force so that the work load is equitably shared over the whole stroke. Such designs depend upon the impact mass to be presented to the buffer. If the actual impact mass is greater than the design value then the resulting force has a high peak at closure of the buffer. Occasionally impact conditions have two buffers of different mass-rating in series. This paper shows that such combinations behave like a single uniform-force buffer until one of them closes. The safe impact mass of the combination is established.

scholarly journals Remote mental health clients prefer face-to-face consultations to telehealth during and after the COVID-19 pandemic

2021 ◽  
pp. 103985622110435
Author(s):  
Andrew James Amos ◽  
Jocelyn Middleton ◽  
Fergus W. Gardiner
Keyword(s):  
Mental Health ◽  
Health Care ◽  
Mental Health Services ◽  
Health Services ◽  
Mental Health Care ◽  
Indigenous Australians ◽  
Face To Face ◽  
Far North ◽  
Mental Health Clients ◽  
The Impact

Objective: To guide the efficient and effective provision of mental health services to clients in Central West and Far North Queensland, we surveyed preferences for face-to-face or in-person contact. Methods: A clinician-designed survey of contact preferences was offered to 248 clients of mental health services in Far North and Central West Queensland in mid-2020. With the onset of COVID-19, the survey was modified to measure the impact of the pandemic. Results: Just over half of the services’ clients participated in the survey (50.4%), of whom more were female (63.2%). Of the participants, 46.3% in Far North and 8.6% in Central West Queensland identified as Indigenous. Strong resistance to telehealth before the pandemic across groups (76%) was moderated during COVID-19 (42.4%), an effect that appeared likely to continue past the pandemic for Central West clients (34.5%). Far North clients indicated their telehealth reluctance would return after the pandemic (77.6%). Conclusions: Our results suggest that remote Australians strongly prefer in-person mental health care to telehealth. Although the COVID-19 pandemic increased acceptance of telehealth across regions while social distancing continued, there was evidence that Indigenous Australians were more likely to prefer in-person contact after the pandemic.

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