Research on innovative reinforcement of prestressed T-beam bridge

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kexin Zhang ◽  
Qi Tianyu ◽  
Li Dachao ◽  
Xue Xingwei ◽  
Fayue Wu ◽  
...  
Keyword(s):  
Construction Process ◽  
Loading Test ◽  
Content Type ◽  
Structural Capacity ◽  
Truck Loading ◽  
The Status ◽  
And Performance ◽  
Reinforcement Model ◽  
Beam Bridge ◽  
T Beam

PurposeIn order to understand the status of the bridge reinforcement process, the construction process monitoring of the reinforced bridge is carried out. The T-beam bridge was tested using the truck loading test. The displacements and concrete strains of the bridge at mid-span were measured during the test.Design/methodology/approachThis paper describes an innovative technique, external prestressing, used to strengthen a 36-year-old prestressed T-beam bridge. This paper introduces the construction process of the prestressed reinforcement method, and makes a theoretical analysis of the reinforced bridge through the establishment of the reinforcement model.FindingsThis study showed that the structural capacity and performance of the bridge were enhanced with externally prestressed steel strand strengthening.Originality/valueThe innovative reinforcement method of prestressed T-shaped bridge is put forward, which has guiding significance for similar bridge reinforcement and maintenance.

An expectation-performance gap between money laundering reporting officers and their directors – evidence from Germany

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lars Haffke
Keyword(s):  
Money Laundering ◽  
Dyadic Relationship ◽  
Performance Gap ◽  
Content Type ◽  
Electronic Survey ◽  
The Status ◽  
Liability Risk ◽  
And Performance ◽  
Communication Needs ◽  
Practical Implications

Purpose Money Laundering Reporting Officers (MLROs) carry out day-to-day anti-money laundering (AML) tasks while directors ultimately remain responsible for AML compliance. Therefore, directors’ expectations of what their MLROs do should ideally coincide with what their actual tasks to minimise liability risk. This paper aims to test for gaps between MLROs and their directors in terms of knowledge, expectations and performance of AML tasks. Likewise, it is researched whether MLROs and directors communicate well with regard to MLROs’ tasks. Design/methodology/approach This paper first develops a model for analysing the dyadic relationship between MLROs and their directors, based on the audit expectation-performance gap. Second, a paired electronic survey of MLROs and directors of German companies was conducted in autumn 2020, testing for participants’ knowledge, expectations and performance of possible AML tasks (n = 136 pairs). Findings While there is no knowledge or performance gap among MLROs and directors, expectations among them are partially unreasonable and their communication needs to be improved. Additionally, this study suggests that MLROs of German non-financial businesses are less knowledgeable, perform AML duties more poorly, and communicate less effectively with their directors. Practical implications Training of MLROs and communication with their directors need to be improved. Especially in the non-financial sector, action is urgently required. Originality/value This paper reports the results of the first paired survey of MLROs and their directors, offering unique insights into their relationship and the status of private AML efforts.

Stress Monitoring for the Whole Construction Process of Simply Supported to Continuous T-Beam Bridge

2011 ◽  
Vol 71-78 ◽  
pp. 3954-3957
Author(s):  
Wu Yang ◽  
Wen Juan Yao ◽  
Xiao Yu Liu
Keyword(s):  
Theoretical Calculations ◽  
Continuous System ◽  
Stress Change ◽  
Construction Process ◽  
Stress Monitoring ◽  
Simply Supported ◽  
Stress Changes ◽  
Negative Moment ◽  
Beam Bridge ◽  
T Beam

In order to research on the stress change and influencing factor of whole construction process of simply supported to Continuous system T-beam bridge, combined with Guizhou Bai-long bridge, the stress change is carried out the real time inspection in each construction stage, and the finite element model is established to analyse Stress changes in whole construction process. The monitoring value is ​​more consistent with the theoretical value in each stage , monitoring dates and theoretical calculations showed that pre-stressed is the main factor of stress changes in construction process.Pre-stressed tension in negative moment region has obvious influence on the stress of middle span, the stress of top and bottom plates in wet joints will be equivalent after tendons tension in negative moment Region.

scholarly journals Institutional shareholder activism in Nigeria

2016 ◽  
Vol 16 (4) ◽  
pp. 680-692 ◽  
Author(s):  
Chinyere Uche ◽  
Emmanuel Adegbite ◽  
Michael John Jones
Keyword(s):  
Financial Institutions ◽  
Qualitative Interviews ◽  
Institutional Arrangement ◽  
Shareholder Activism ◽  
Sub Saharan Africa ◽  
Content Type ◽  
Governance Practices ◽  
The Status ◽  
Sub Saharan ◽  
And Performance

Purpose The purpose of this paper is to investigate institutional shareholder activism in Nigeria. It addresses the paucity of empirical research on institutional shareholder activism in sub-Saharan Africa. Design/methodology/approach This study uses agency theory to understand the institutional shareholder approach to shareholder activism in Nigeria. The data are collected through qualitative interviews with expert representatives from financial institutions. Findings The findings indicate evidence of low-level shareholder activism in Nigeria. The study provides empirical insight into the reasons why institutional shareholders might adopt an active or passive approach to shareholder activism. The findings suggest the pension structure involving two types of pension institutions affects the ability to engage in shareholder activism. Research limitations/implications The research study advances our understanding of the status quo of institutional shareholder activism in an African context such as Nigeria. Practical implications The paper makes a practical contribution by highlighting that regulators need to consider how the financial market conditions and characteristics affect effective promotion of better governance practices and performance through shareholder activism. Originality/value This study draws attention to the implication for shareholder activism of complexities associated with an institutional arrangement where two types of financial institutions are expected to operate and manage the private pension funds in a country.

After all these years, what has happened to the international prevalence of NPM-inspired managerial practices?

2019 ◽  
Vol 32 (4) ◽  
pp. 403-417 ◽  
Author(s):  
Naomi Aoki
Keyword(s):  
Goal Orientation ◽  
Public Management ◽  
New Public Management ◽  
Liberal Democracies ◽  
Content Type ◽  
Managerial Practices ◽  
New Public ◽  
The Status ◽  
International Data ◽  
And Performance

Purpose According to a widely accepted narrative, managerial reforms associated with new public management (NPM) originated in wealthy market economies and liberal democracies and were then promoted globally. However, scientific and systematic cross-national evidence of NPM practices has remained limited in scope, and debates over their survival and prevalence remain unsettled. The purpose of this paper is to narrow this empirical gap. Design/methodology/approach Using international data from public education in approximately 65 economies in 2012, this study systematically investigated the prevalence of managerial practices, namely, the managerial responsibilities of school principals, goal orientation in school management, and performance-based human resource management (HRM). It also tested correlations between the status of these practices and political and economic conditions across economies. Findings As of 2012, the top users of NPM practices were geographically spread across the world in regions that included Southeast Asia, Eastern Europe, the Middle East, and North Africa. Economies exhibited dissimilarities in their deployment of managerial practices. Performance-based HRM tended to be used more extensively in less accountable and less wealthy economies. Originality/value By focusing on actual practices, this study offers an empirically valid, critical analysis of the global prevalence of NPM. The findings clarify some observers’ current understandings of NPM. They deliver a powerful message that debates on global reform waves can benefit greatly from empirical evidence drawn from world regions beyond one’s parochial focus.

Study on the effect of load level and carriageway slab thickness on fatigue performance of concrete T-girder bridges

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zizheng Liu ◽  
Tianlai Yu ◽  
Linlin Zhang
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Fatigue Damage ◽  
Load Level ◽  
Fatigue Performance ◽  
Fatigue Load ◽  
Content Type ◽  
Load Tests ◽  
Beam Bridge ◽  
T Beam

PurposeThe effects of fatigue load level and plate thickness on the fatigue performance of reinforced concrete T-beam bridges.Design/methodology/approachFatigue load tests were performed based on the fatigue damage theory of reinforced concrete, combined with finite element model analysis. The other conditions are controlled separately, and the fatigue performance of the T-beam bridge carriageway slab under different fatigue load levels and different plate thicknesses is studied.FindingsThe fatigue process of the carriageway slab of a reinforced concrete T-beam bridge is divided into three stages: fatigue damage generation, fatigue damage development and fatigue failure. Under certain other conditions, as the fatigue load level increases, the fatigue damage of the carriageway slab accelerates; as the thickness of the carriageway slab increases, the fatigue resistance of the carriageway slab improves.Research limitations/implicationsTests and simulations have been carried out, but have not been applied to actual engineering for the time being.Practical implicationsIncreasing the thickness of the carriageway slab in actual engineering is conducive to improving the fatigue performance of the bridge, and heavy-duty traffic has a greater impact on the durability of the bridge.Social implicationsIt has certain reference value for bridge design, inspection and subsequent maintenance and reinforcement.Originality/valueThe originality of this article lies in designing and carrying out static and cyclic load tests separately, while introducing material damage models based on a large number of references and combining finite element analysis to consider the impact of a specific factor on fatigue performance. The test and analysis results can provide reference for bridge design and inspection.

Nigeria's police protests point to wider frustrations

2020 ◽  
Keyword(s):  
Status Quo ◽  
Police Chief ◽  
Content Type ◽  
Political Issues ◽  
Protest Movement ◽  
The North ◽  
The Status ◽  
And Performance

Significance Nigeria's police are the most tangible face of daily misgovernance for its citizens. Yet the recent ‘#EndSARS’ protest movement that has gained global attention is not closely tied to existing organisations and embodies wider youth frustrations with the status quo. Impacts Recent climbdowns by Buhari's government reflect its fear of a wider undermining of its authority on economic, social and political issues. Protests are unlikely to gain the same traction in the north, given stronger support for tactical policing units amid widespread insecurity. Calls for the police chief to resign may prove a distraction from reforms needed to push real improvement in accountability and performance.

Experimental study on blast damage of RC T-beam bridge

Sensor Review ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sheng Peng ◽  
Lu-jun Cai ◽  
Tian-hua Jiang ◽  
Xu Kai
Keyword(s):  
Damage Evaluation ◽  
Concrete Material ◽  
Content Type ◽  
Blast Damage ◽  
Damage Repair ◽  
Expansion Stage ◽  
Technical Specifications ◽  
Beam Bridge ◽  
Bridge Models ◽  
T Beam

Purpose The purpose of this paper is to investigate the explosive performance and explosion damage mechanism of T-beam bridge structure. Design/methodology/approach On the basis of the existing specification, two T-beam bridge models were designed and fabricated. Test specimens of different explosive dosage and different blast height were carried out. The mechanical process, failure mode, blast damage model, damage identification mechanism and blast evolution law and quantitative evaluation were taken into account. Findings The results revealed that the web plate fracture failure is the key to the unstable failure of the whole T-beam bridge. The explosion failure phenomenon and blast damage evaluation criterion of RC T-beam bridge was divided into five stages: the original cracks stage of concrete material (D = 0 ∼ 0.1), the fractures initiation stage of concrete material (D = 0.1 ∼ 0.3), the stable expansion stage of cracks in concrete material (D = 0.3 ∼ 0.55), the unstable expansion stage of cracks in concrete material (D = 0.55 ∼ 0.8), the explosion fracture of steel bars and the overall instability and damage of the bridge (D = 0.8 ∼ 1.0), which can also be described as basically intact, slight damage, moderate damage, severe damage and collapsed. Social implications The research result will provide basis for the antiknock evaluation and damage repair technical specifications of the RC T-beam bridge. Originality/value The research results of damage evaluation serve as a basis for damage repair and reinforcement of bridge structures after explosion.

Pathways ahead for New Zealand hill country farming

2016 ◽  
Vol 78 ◽  
pp. 73-82 ◽  
Author(s):  
F.G. Scrimgeour
Keyword(s):  
New Zealand ◽  
Rural Communities ◽  
New Technologies ◽  
Service Providers ◽  
Farming Systems ◽  
Hill Country ◽  
The Status ◽  
And Performance ◽  
Hill Farming ◽  
The Hill

This paper provides a stocktake of the status of hill country farming in New Zealand and addresses the challenges which will determine its future state and performance. It arises out of the Hill Country Symposium, held in Rotorua, New Zealand, 12-13 April 2016. This paper surveys people, policy, business and change, farming systems for hill country, soil nutrients and the environment, plants for hill country, animals, animal feeding and productivity, and strategies for achieving sustainable outcomes in the hill country. This paper concludes by identifying approaches to: support current and future hill country farmers and service providers, to effectively and efficiently deal with change; link hill farming businesses to effective value chains and new markets to achieve sufficient and stable profitability; reward farmers for the careful management of natural resources on their farm; ensure that new technologies which improve the efficient use of input resources are developed; and strategies to achieve vibrant rural communities which strengthen hill country farming businesses and their service providers. Keywords: farming systems, hill country, people, policy, productivity, profitability, sustainability

Study on Common Ground Testing Platform Technology for Telemetry Core Equipment

2012 ◽  
Vol 220-223 ◽  
pp. 1472-1475
Author(s):  
Qiu Lin Tan ◽  
Xiang Dong Pei ◽  
Si Min Zhu ◽  
Ji Jun Xiong
Keyword(s):  
Data Exchange ◽  
Common Ground ◽  
Digital Signal ◽  
Test System ◽  
Automatic Test System ◽  
Module Design ◽  
The Status ◽  
Output Module ◽  
And Performance ◽  
Hardware Circuit

On the basis of automatic test system of the status in domestic and foreign, by analysis of the various functions and performance of the integrated test system, a design of the integrated test system is proposed, FPGA as the core logic controller of the hardware circuit. The system of the hardware design include: digital signal source output modules, analog output module and PCM codec module. Design of hardware circuit are mainly described. In addition, a detailed analysis of some key technologies in the design process was given. Overall, its data exchange with host computer is through the PCI card, data link and bandwidth can be expanded in accordance with the actual needs. The entire system designed in the modular principle, which has a strong scalability.

scholarly journals An unlikely partnership? New Zealand–South Korea bilateral cooperation and Antarctic order

Polar Record ◽  
2021 ◽  
Vol 57 ◽  
Author(s):  
Patrick Flamm
Keyword(s):  
New Zealand ◽  
South Korea ◽  
World Politics ◽  
Global Power ◽  
Political Interests ◽  
Vested Interests ◽  
The Status ◽  
Bilateral Cooperation ◽  
And Performance ◽  
The Cold War

Abstract While the Antarctic Treaty System intended to keep Antarctica an area of international cooperation and science free from militarisation and international conflict, the region has not been completely shielded from global power transitions, such as decolonisation and the end of the Cold War. Presently, emerging countries from Asia are increasingly willing to invest in polar infrastructure and science on the back of their growing influence in world politics. South Korea has also invested heavily in its Antarctic infrastructure and capabilities recently and has been identified as an actor with economic and political interests that are potentially challenging for the existing Antarctic order. This article first assesses the extent and performance of the growing bilateral cooperation between South Korea and one of its closest partners, New Zealand, a country with strong vested interests in the status quo order. How did the cooperation develop between these two actors with ostensibly diverging interests? This article finds that what may have been a friction–laden relationship, actually developed into a win-win partnership for both countries. The article then moves on to offer an explanation for how this productive relationship was made possible by utilising a mutual socialisation approach that explores socio-structural processes around status accommodation.

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