Groundwater Lowering for Construction of the Kilsby Tunnel – Geological and Geotechnical Interpretation

2021 ◽  
pp. 1-14
Author(s):  
Martin Preene ◽  
Mike Chrimes
Keyword(s):  
Groundwater Flow ◽  
Theoretical Understanding ◽  
Stress Theory ◽  
Glacial Origin ◽  
Buried Channel ◽  
Geological Information ◽  
Ground Conditions ◽  
Glacial Processes ◽  
The Impact ◽  
Groundwater Lowering

The Kilsby Tunnel, constructed in the 1830s, faced severe problems when a section of the tunnel, almost 400 m long, encountered unstable ‘quicksand’ conditions. The engineer for the project, Robert Stephenson, developed an extensive groundwater lowering scheme, unique for the time, using steam engines pumping from multiple shafts, to overcome the quicksand. Modern geological information indicates most of the tunnel was in Middle Lias bedrock, but the ‘quicksand’ section passed through a buried channel of water-bearing sand of glacial origin. In the early 19th century the impact of glacial processes on British geology was not widely accepted and, based on contemporary geological knowledge, Stephenson’s problems appear to be genuine unforeseen ground conditions, not predicted by his experienced advisers. It seems just random chance that trial borings missed the buried channel of sand. The work at Kilsby was two decades before Darcy’s law established the theoretical understanding for groundwater flow, and 90 years before Terzaghi’s effective stress theory described how reducing pore water pressures changed ‘quicksand’ into a stable and workable material. Despite the lack of existing theories, Stephenson used careful observations and interpretation of groundwater flow in the ‘quicksand’ to navigate the tunnel project to a successful conclusion.

Influence of social networks on business processes’ development

2020 ◽  
Vol 19 (12) ◽  
pp. 2225-2252
Author(s):  
E.V. Popov ◽  
V.L. Simonova ◽  
O.V. Komarova ◽  
S.S. Kaigorodova
Keyword(s):  
Social Networks ◽  
Social Media ◽  
Business Models ◽  
Business Processes ◽  
Digital Economy ◽  
Theoretical Understanding ◽  
Sales Channels ◽  
A Value ◽  
The Impact

Subject. The emergence of new ways of interaction between sellers and buyers, the formation of new sales channels and product promotion based on the use of digital economy tools is at the heart of improving the business processes. Social networks became a tool for development; their rapid growth necessitates theoretical understanding and identification of potential application in enterprise's business process digitalization. Objectives. We explore the role of social media in the digitalization of business processes, systematize the impact of social networks on business processes of enterprises in the digital economy. Methods. The theoretical and methodological analysis of social networks as a tool for digitalization of company's business processes rests on the content analysis of domestic and foreign scientific studies, comparison, generalization and systematization. Results. We highlight the key effects of the impact of social networks on the business processes of the company; show that the digitalization of business processes should be considered in the context of a value-based approach, aimed at creating a value through the algorithmization of company operations. We determine that social networks are one of the most important tools for digitalization of company's business processes, as they have a high organizational and management potential. We also systematize the effects of social media on company's business processes. Conclusions. We present theoretical provisions of the impact of social networks on business processes of enterprises, which will enable to model and organize ideas about the development of digital ecosystems and the formation of business models.

Toxic Political Leadership and the Problems of Professionals in Free State Municipalities

2019 ◽  
Vol 48 (1) ◽  
Author(s):  
David Matheakuena Mohale
Keyword(s):  
Good Governance ◽  
Political Leadership ◽  
Primary Source ◽  
Free State ◽  
Audit Report ◽  
Theoretical Understanding ◽  
Number Of Factors ◽  
Auditor General ◽  
Appointed Officials ◽  
The Impact

The 2016–17 Audit Report by the Auditor General points to the deterioration in audit results of South African municipalities. This deterioration confirms the perennial dysfunctionality of municipalities, at least from the governance perspective. Corporate governance is a function of leadership. Municipal councils are, therefore, responsible for the overall performance of municipalities they lead. Sound regulatory framework, good plans, clear strategies, policies, and systems are inadequate if not supported by highly gifted and ethical leadership. The Auditor General’s Audit Report suggests that local government struggles the most in the area of ethics. The Principal-Agent Theory argues that appointed officials are more likely to subvert the interests of an organisation. However, this article argues that the primary source of problems in municipalities is a combination of ineptitude and unethical political leadership taking root. This conclusion is based on the empirical comparative cases of eight municipalities in the Free State Province.  The conduct of councillors makes it difficult to attract and retain professionals in municipalities, resulting in notable deficiencies in the delivery of services. Essentially, councillors are the root cause for governance failure in municipalities arising from a number of factors. Findings in this study contribute towards the understanding of the impact of leadership in the failure of municipalities to meet good governance and developmental objectives. Further, they deepen the theoretical understanding of the political-administrative interface.

THE LANDSCAPE INVESTIGATIONS AS NECESSARY PART OF BIOLOGICAL STUDY IN THE COASTAL ZONE TO THE QUESTION OF THE IMPACT OF CLIMATE CHANGE ON THE ECOLOGICAL STATE OF ARTIFICAL

2017 ◽  
Author(s):  
Artem Lapenkov ◽  
Artem Lapenkov ◽  
Yury Zuyev ◽  
Yury Zuyev ◽  
Nadezhda Zuyeva ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Benthic Communities ◽  
Great Depth ◽  
Research Strategy ◽  
Biological Study ◽  
Lake Ladoga ◽  
Coastal Zones ◽  
Investigation Methods ◽  
Ground Conditions ◽  
The Impact

Coastal zones have great diversity of resources. The shallow water zones contain the most of plant and benthic communities. A description of relief and type of ground is needed for the rigorous monitoring of biota and environmental condition of coastal zone. Generally, on the basis of these data the investigation methods of the coastal zone are selected. The shallows research strategy has been developed by us for northern part of the Lake Ladoga. If the coastal areas are characterized by great depth and flat topography, then sonar’s can be used to describe them and samples of ground can be taken by bottom grabs. In the Lake Ladoga these methods don’t operate correctly by reason of the compound bottom relief and the fact that a sizeable part of the bottom is occupied by hard ground. Therefore, our investigations base on the diving transect method of Golikov and Skarlato (1965). A diver moves along transects. He registers the depth, length to coastline, water temperature, relief and ground, edificators and records video. In the laboratory all these data are decoded and used for mapping of bays. Studies of plant communities have been performed and strategy for research of benthic communities in complex relief and hard ground conditions has been developed based on the descriptions of shallow waters. Description of the Malay Nikonovskia Bay bottom has given an opportunity to estimate changes in the bottom of the bay under the influence of the trout farm.

PODC 2020 Review

2021 ◽  
Vol 51 (4) ◽  
pp. 75-81
Author(s):  
Ahad Mirza Baig ◽  
Alkida Balliu ◽  
Peter Davies ◽  
Michal Dory
Keyword(s):  
Machine Learning ◽  
Distributed Computing ◽  
Keynote Speaker ◽  
Lively Discussion ◽  
Theoretical Understanding ◽  
New Directions ◽  
New Ideas ◽  
New Challenges ◽  
The Impact ◽  
Distributed Machine Learning

Rachid Guerraoui was the rst keynote speaker, and he got things o to a great start by discussing the broad relevance of the research done in our community relative to both industry and academia. He rst argued that, in some sense, the fact that distributed computing is so pervasive nowadays could end up sti ing progress in our community by inducing people to work on marginal problems, and becoming isolated. His rst suggestion was to try to understand and incorporate new ideas coming from applied elds into our research, and argued that this has been historically very successful. He illustrated this point via the distributed payment problem, which appears in the context of blockchains, in particular Bitcoin, but then turned out to be very theoretically interesting; furthermore, the theoretical understanding of the problem inspired new practical protocols. He then went further to discuss new directions in distributed computing, such as the COVID tracing problem, and new challenges in Byzantine-resilient distributed machine learning. Another source of innovation Rachid suggested was hardware innovations, which he illustrated with work studying the impact of RDMA-based primitives on fundamental problems in distributed computing. The talk concluded with a very lively discussion.

scholarly journals Collaborative Learning in Makerspaces: A Grounded Theory of the Role of Collaborative Learning in Makerspaces

SAGE Open ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 215824402110207
Author(s):  
Kolja Oswald ◽  
Xiaokang Zhao
Keyword(s):  
Grounded Theory ◽  
Collaborative Learning ◽  
Venture Creation ◽  
Theoretical Understanding ◽  
Innovative Environment ◽  
Open Coding ◽  
Axial Coding ◽  
The Impact ◽  
Emergent Theory

Makerspaces are a relatively new phenomenon that seem to create an innovative environment for individuals to work on projects and learn about technology. This article presents a grounded theory study, which investigates the impact that makerspaces have on innovation. Strauss and Corbin’s grounded theory methodology is used to research this exploratory topic. The data sample consists of 16 interviews of members of a makerspace in Shanghai, China. Data analysis was conducted abiding by Strauss and Corbin’s coding framework, entailing open coding, axial coding, and selective coding as well as coding tools, such as the coding paradigm and the conditional matrix. Collaborative learning was identified as the core phenomenon of this research, and The Collaborative Learning and its Outcomes Theory was created. The emergent theory contributes to the understanding of how makerspaces impact outcomes, such as innovation and venture creation, as well as explain how collaborative learning in conjunction with other modes of learning can facilitate learning at various complexities. As such, this study’s contributions are in developing the theoretical understanding of makerspaces as well as collaborative learning. It offers managerial and pedagogical implications that can help create learning environments where collaborative learning is fostered.

To be more philanthropic when joining the government-controlled business association? Evidence from Chinese private firms

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Youliang Yan ◽  
Xixiong Xu
Keyword(s):  
Communist Party ◽  
Corporate Philanthropy ◽  
Emerging Market ◽  
Private Firms ◽  
Theoretical Understanding ◽  
Business World ◽  
Content Type ◽  
Business Association ◽  
The Government ◽  
The Impact

Purpose The purpose of this paper is to investigate whether and how affiliation with the government-controlled business association, namely, China Federation of Industry and Commerce (CFIC), affects corporate philanthropy in an emerging market. Design/methodology/approach Through an analysis of survey data gathered from Chinese private firms, this paper conducts multiple regressions to examine the impact of the CFIC membership on corporate philanthropy. Findings Empirical results show that the CFIC membership of private entrepreneurs is significantly positively associated with corporate philanthropy. Moreover, this study finds that the provincial marketization level and the firm Communist Party branch attenuate the positive association between CFIC membership and corporate philanthropy, indicating that the effect of CFIC on corporate philanthropy is more pronounced in regions with lower marketization level and firms without Communist Party branch. The findings are robust to various alternate measures of corporate philanthropy and remain valid after controlling for potential endogeneity. Practical implications Firms will be more active in corporate philanthropy to respond to the government’s governance appeal when they join the CFIC. This highlights the implications of political connections and in particular on the value of government-controlled business associations in the Chinese business world. Originality/value This study extends the literature on the determinants of corporate philanthropy and deepens the theoretical understanding of the governance role of business association with Chinese characteristics.

Positive and proactive leadership: disentangling the relationships between stress, resilience, leadership style and leader satisfaction/well-being

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Charlotte D. Shelton ◽  
Sascha D. Hein ◽  
Kelly A. Phipps
Keyword(s):  
Leadership Style ◽  
Time Management ◽  
Leadership Behaviors ◽  
Well Being ◽  
Process Skills ◽  
Work Process ◽  
Theoretical Understanding ◽  
Content Type ◽  
Positive Leadership ◽  
The Impact

Purpose This study aims to analyze the relationships between leader resilience, leadership style, stress and life satisfaction. It reflects an emerging theoretical framework that positions resilience as a capacity that can be developed vs a response mechanism driven by innate traits. Design/methodology/approach To test three research hypotheses, online survey data were collected from 101 E.M.B.A. alumni of a US-based university using a cross-sectional, correlational research design. The results were analyzed using multiple linear regression. The authors assessed resilience, leadership style, stress and satisfaction/well-being using standardized inventories. Findings The results support previous research that has identified a significant relationship between resilience and positive leadership. Unique to this study, however, is the finding that work process behaviors (e.g. time management, cooperation, receptiveness) rather than traits (e.g. optimism, self-esteem, locus of control) are the resilience factors most associated with a positive leadership style. Work process skills significantly interacted with stress level to moderate leadership style. Additionally, a positive leadership style moderated the impact of stressful life events on leader satisfaction/well-being. Research limitations/implications Key limitations are sample size and the risk of common method variance. Though numerous procedural steps were taken to control for these issues, future research with a larger and more diverse sample is needed. Practical implications Organizational stress is pervasive, and resilience is increasingly recognized as a foundational leadership skill. This study provides empirical data documenting positive relationships between resilience, constructive leadership and leader satisfaction/well-being. This research also identifies work process behaviors (e.g. time management, cooperation and receptiveness) as the primary resiliency factors associated with sustaining positive leadership behaviors in times of stress. These results support previous research findings that have positioned resiliency as a capacity that can be developed, providing further support for investing in resiliency training for leaders. Originality/value This research contributes to the literature by analyzing resilience more comprehensively than previous studies. It extends the theoretical understanding of resilience beyond traits using an 160-item inventory that assesses four discrete domains of resilience. The results provide support for the importance of developing process skills in leaders to increase resiliency; thus, increasing the probability, they will model constructive leadership behaviors in times of significant stress.

Male Youth Activities and Metropolitan Context

1998 ◽  
Vol 30 (3) ◽  
pp. 385-399 ◽  
Author(s):  
S R Holloway
Keyword(s):  
Black Male ◽  
Metropolitan Areas ◽  
White Male ◽  
The United States ◽  
Theoretical Understanding ◽  
Trade Off ◽  
Black And White ◽  
Trade Offs ◽  
Activity Choices ◽  
The Impact

The research reported here examines the impact of metropolitan location on the activity choices of a sample of black and white male youths living in large metropolitan areas in the United States in 1980. The results of the analysis confirm that similar youths living in different metropolitan areas will make different activity choices. Furthermore, black male youths are found to be substantially more sensitive to metropolitan context than white male youths. The analysis also suggests that black and white disadvantaged youths respond differently to metropolitan context in terms of the trade-offs between activities. Disadvantaged black male youths are highly unlikely to be employed in all metropolitan areas and tend to trade-off staying in school with idleness, whereas disadvantaged white male youths tend to trade-off employment with idleness, depending on the metropolitan area they live in. This research confirms the importance of incorporating geographic context into our theoretical understanding of male youths' behavior. We must also, however, continue to address the implications of race as it shapes the context-dependent labor-market experiences of male youths.

Three stages of entrepreneurial orientation: the founder’s role

2019 ◽  
Vol 26 (2) ◽  
pp. 285-306 ◽  
Author(s):  
Torbjörn Ljungkvist ◽  
Börje Boers ◽  
Joachim Samuelsson
Keyword(s):  
Entrepreneurial Orientation ◽  
Single Case ◽  
Annual Reports ◽  
Structured Interviews ◽  
Theoretical Understanding ◽  
Content Type ◽  
Five Dimensions ◽  
The Impact ◽  
Over Time

Purpose The purpose of this paper is to understand the development of the five dimensions of entrepreneurial orientation (EO) over time by taking a founder’s perspective. Design/methodology/approach The paper draws on an in-depth single-case study. It combines semi-structured interviews in the company with archival data, such as annual reports, press clips and interviews in business magazines. Findings The results indicate that the EO dimensions change from being personalized and directly solution-oriented to being intangible value-creation-oriented. Originality/value By suggesting ownership-based EO configurations, this study contributes insights into how different ownership forms propel EO. These configurations – that is, personal, administrative based and intangible focused – show the impact of the EO dimensions and provide a systematic and theoretical understanding of EO change over time.

scholarly journals Comparative Transcriptomic Signature of the Simulated Microgravity Response in Caenorhabditis elegans

2019 ◽  
Author(s):  
İrem Çelen ◽  
Aroshan Jayasinghe ◽  
Jung H. Doh ◽  
Chandran R. Sabanayagam
Keyword(s):  
Caenorhabditis Elegans ◽  
Simulated Microgravity ◽  
Space Station ◽  
Integrative Approach ◽  
Biological Processes ◽  
Rna Seq ◽  
Transcriptomic Response ◽  
Transcriptomic Signature ◽  
Ground Conditions ◽  
The Impact

AbstractBackgroundGiven the growing interest in human exploration of space, it is crucial to identify the effect of space conditions on biological processes. The International Space Station (ISS) greatly helps researchers determine these effects. However, the impact of the ISS-introduced potential confounders (e.g., the combination of radiation and microgravity exposures) on the biological processes are often neglected, and separate investigations are needed to uncover the impact of individual conditions.ResultsHere, we analyze the transcriptomic response of Caenorhabditis elegans to simulated microgravity and observe the maintained transcriptomic response after return to ground conditions for four, eight, and twelve days. Through the integration of our data with those in NASA GeneLab, we identify the gravitome, which we define as microgravity-responsive transcriptomic signatures. We show that 75% of the simulated microgravity-induced changes on gene expression persist after return to ground conditions for four days while most of these changes are reverted after twelve days return to ground conditions. Our results from integrative RNA-seq and mass spectrometry analyses suggest that simulated microgravity affects longevity regulating insulin/IGF-1 and sphingolipid signaling pathways.ConclusionsOur results address the sole impact of simulated microgravity on transcriptome by controlling for the other space-introduced conditions and utilizing RNA-seq. Using an integrative approach, we identify a conserved transcriptomic signature to microgravity and its sustained impact after return to the ground. Moreover, we present the effect of simulated microgravity on distinct ceramide profiles. Overall, this work can provide insights into the sole effect of microgravity on biological systems.

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