scholarly journals Physical and economic impacts of studded tyre use on pavement structures in cold climates

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Osama A Abaza ◽  
Mahmoud Arafat ◽  
Muhammad Saif Uddin
Keyword(s):  
Life Cycle Cost ◽  
Economic Impacts ◽  
Cost Effective ◽  
Cold Regions ◽  
Wear Rates ◽  
The Public ◽  
Average Wear ◽  
Pavement Structures ◽  
The Impact

ABSTRACT In cold regions like Alaska of USA, Canada and the northern parts of Europe, using studded tyres is common among the public when driving in icy and snowy conditions. However, studded tyres cause extensive wear to asphalt pavement, reducing pavement life. This study addresses the physical and economic impacts of winter studded tyres on the roadway system to better inform decision makers as they develop alternative solutions and future polices. The approach is applied in a case study from a sample of Alaska statewide road segments. Surveys were employed to examine the extent of the use of studded tyres and cost-effective alternatives. A pavement life-cycle cost review was established considering several variables to discover a realistic cost of roadway resurfacing and rehabilitation. Wear rates due to studded tyres and rut rates due to wheel loads were found for different highway classes. The results indicate higher average wear rates due to studded passenger vehicles on freeways than average rut rates due to heavy wheel loads. The results also indicate lower average wear rates on arterial and collector roads. The estimates show that studded tyre use reduced asphalt surface life by about 7 years on the selected freeway sample in the case study, which is about 47% loss in pavement life based on the initial design life of 15 years. Other road classes experienced lower reductions in service life. Finally, cost analysis was provided to reflect the impact of studded tyres on the state's budget. Countermeasures were suggested, which in turn may help other cold regions develop strategies on the use of new winter tyre technology.

scholarly journals Defining and Quantifying Intermittency in the Power Sector

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3366
Author(s):  
Daniel Suchet ◽  
Adrien Jeantet ◽  
Thomas Elghozi ◽  
Zacharie Jehl
Keyword(s):  
Power Source ◽  
Production Data ◽  
Power Sector ◽  
Predictive Capacity ◽  
The Public ◽  
Current State ◽  
Definition Of ◽  
Quantitative Definition ◽  
The Impact

The lack of a systematic definition of intermittency in the power sector blurs the use of this term in the public debate: the same power source can be described as stable or intermittent, depending on the standpoint of the authors. This work tackles a quantitative definition of intermittency adapted to the power sector, linked to the nature of the source, and not to the current state of the energy mix or the production predictive capacity. A quantitative indicator is devised, discussed and graphically depicted. A case study is illustrated by the analysis of the 2018 production data in France and then developed further to evaluate the impact of two methods often considered to reduce intermittency: aggregation and complementarity between wind and solar productions.

scholarly journals Analisis Perubahan Persepsi Jamaah Dakwah Ustadz Evie Effendi Di Kota Bandung

2019 ◽  
Vol 19 (1) ◽  
pp. 51-62
Author(s):  
Nadhillah Kusindriani ◽  
Martha Tri Lestari
Keyword(s):  
Qualitative Approach ◽  
Case Study Method ◽  
Public Figure ◽  
The Public ◽  
The Impact ◽  
Research Show

Ustadz Evie Effendi was a public figure who is known by the public as a modern ustadz that use the Sundanese language when do Da’wah. The perceptions given by the society particularly of ustadz Evie Effendi Da'wah pilgrims are positive until ultimately ustadz Evie exposed "misinterpretation" case in August 2018 when he misinterpreted a verse in the Sura in the Quran. The occurrence of a case of "misinterpretation" had a significant impact for ustadz Evie Effendi, one of them is a lot of pilgrims from ustadz Evie Effendi in Bandung which is no longer a loyal following lectures activities conducted by him. The existence of the impact that occurs from the "misinterpretation" case encourages researchers to see how the changes in perception that occurred in ustadz Evie Effendi Da'wah worshipers in Bandung. This study used a qualitative approach through the case study method uses the concept of Yin (2015). The results of this research show that changes in perception that occurred in Ustadz Evie Effendi Da'wah worshipers in Bandung is different for adult ages (40 – 50 years) and adolescents (20 years) as well as temporary caused culture society Indonesia which is permissive.Ustadz Evie Effendi merupakan seorang publik figur yang dikenal oleh masyarakat sebagai ustadz kekinian yang menggunakan bahasa Sunda ketika ceramah. Persepsi yang diberikan masyarakat khususnya jamaah dakwah ustadz Evie Effendi positif sampai pada akhirnya ustadz Evie terkena kasus “salah tafsir” pada bulan Agustus 2018 ketika ia salah menfasirkan ayat dalam suatu surat di Al-Quran. Terjadinya kasus “salah tafsir” memberikan dampak yang cukup besar bagi ustadz Evie Effendi salah satunya adalah banyak dari jamaah dakwah ustadz Evie Effendi di Kota Bandung yang tidak lagi setia mengikuti kegiatan ceramah yang dilakukan ustadz Evie Effendi. Adanya dampak yang terjadi dari kasus “salah tafsir” mendorong peneliti untuk melihat bagaimana perubahan persepsi yang terjadi pada jamaah dakwah ustadz Evie Effendi di Kota Bandung. Penelitian ini menggunakan pendekatan kualitatif melalui metode studi kasus menggunakan konsep Yin (2015). Hasil penelitian ini menunjukkan bahwa perubahan persepsi yang terjadi pada jamaah dakwah ustadz Evie Effendi di Kota Bandung berbeda untuk kalangan usia dewasa (40 – 50 tahun) dan remaja (20 tahun) serta bersifat sementara yang disebabkan kultur masyarakat Indonesia yang permisif.

scholarly journals The Value of Ecological Plantings in Public Gardens

2009 ◽  
pp. 43-59
Author(s):  
Chris Flynn
Keyword(s):  
Vegetation Type ◽  
Educational Benefits ◽  
Public Gardens ◽  
The Public ◽  
South Wales ◽  
Potential Applications ◽  
Royal Botanic Gardens ◽  
Ecological Planting ◽  
The Impact

This paper has been developed from a third year dissertation written as part of the Diploma in Horticulture course at the Royal Botanic Gardens, Kew. It serves as an overview of the subject of ecological planting and its potential applications within public gardens. It also outlines some scientific benefits regarding ecological studies, the impact that this type of planting may have on horticulture (both in gardens and the nursery trade), and the educational benefits for the public and school groups. The case study below looks at the viability of representing a section of Snow Gum Grassy Woodland (a vegetation type found in New South Wales, Australia) outside in Coates Wood, Wakehurst Place, UK.

The Impact of Cutbacks From a Major State Financial Crisis on Organizational Trust

2021 ◽  
pp. 027507402110530
Author(s):  
Marco Tulio Zanini ◽  
Carmen Migueles ◽  
Juliana Carvalho
Keyword(s):  
Financial Crisis ◽  
Organizational Trust ◽  
Longitudinal Case Study ◽  
Public Servants ◽  
Negative Behaviors ◽  
The Public ◽  
Negative Effect ◽  
The Impact

Previous research has shown that cutbacks in public spending often impact the range and quality of the public services delivered, leading to negative behaviors on the part of public servants. This article examines how sudden cutbacks caused by a major state financial crisis have an impact on interpersonal trust within a special police unit. We present the results of a longitudinal case study using a combination of qualitative methods. The lack of foreseeability and reliability caused by drastic changes resulting from cutbacks has a negative effect on members’ trust in their capacity to perform.

Additional Opinions and Judicial Diversity at the International Court of Justice

2020 ◽  
pp. 246-262 ◽  
Author(s):  
Hemi Mistry
Keyword(s):  
Gender Diversity ◽  
Personal Characteristics ◽  
International Court Of Justice ◽  
The Public ◽  
Court Of Justice ◽  
International Court ◽  
The Public Sphere ◽  
The Individual ◽  
The Impact

Additional opinions—that is, dissenting opinions, separate opinions, and declarations—are, by definition, the primary institutional mechanism through which judges can express their individual views on a particular decision, as distinct from the judgment or decision proclaimed on behalf of the institution. Therefore, within the public sphere they are the principal institutional manifestation of the individual—and thus the individuality—of the judge. Consequently, for those who seek to understand the impact of certain personal characteristics upon how a judge discharges their professional functions and, in turn, the wider institutional and systemic implications of the participation of individuals bearing those characteristics, the study of additional opinions would seem a useful analytical enterprise. Using gender diversity at the International Court of Justice as a case study, the purpose of this chapter is twofold: first, to explain the relationship between diversity and additional opinions, and second, to explore the methodological potential, and challenges, that the study of additional opinions entails.

scholarly journals Citizen as Sensors' Commitment in Urban Public Action

2019 ◽  
Vol 8 (4) ◽  
pp. 42-59 ◽  
Author(s):  
Gwendoline l'Her ◽  
Myriam Servières ◽  
Daniel Siret
Keyword(s):  
Air Quality ◽  
Citizen Science ◽  
Urban Air Quality ◽  
Urban Air ◽  
The Public ◽  
Public Action ◽  
Quality Issue ◽  
Data Analyses ◽  
The Impact

Based on a case study in Rennes, the article presents how a group of urban public actors re-uses methods and technology from citizen sciences to raise the urban air quality issue in the public debate. The project gives a group of inhabitants the opportunity to follow air quality training and proceed PM2.5µm measurements. The authors question the impact of the ongoing hybridisation between citizen science and urban public action on participants' commitment. The authors present how the use of PM2.5-sensors during 11 weeks led to a disengagement phenomenon, even if the authors observe a strong participation to workshops. These results come from an interdisciplinary methodology using observations, interviews, and data analyses.

scholarly journals Uncertainty estimation in railway track life-cycle cost: a case study from Swedish National Rail Administration

2008 ◽  
Vol 223 (3) ◽  
pp. 285-293 ◽  
Author(s):  
A P Patra ◽  
P Söderholm ◽  
U Kumar
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Cost Effective ◽  
Railway Track ◽  
Statistical Characteristics ◽  
Maintenance Cost ◽  
Cost Models ◽  
Effective Decision ◽  
Effective Decision Support

Life-cycle cost (LCC) is used as a cost-effective decision support for maintenance of railway track infrastructure. However, a fair degree of uncertainty associated with the estimation of LCC is due to the statistical characteristics of reliability and maintainability parameters. This paper presents a methodology for estimation of uncertainty linked with LCC, by a combination of design of experiment and Monte Carlo simulation. The proposed methodology is illustrated by a case study of Banverket (Swedish National Rail Administration). The paper also includes developed maintenance cost models for track.

scholarly journals THE IMPACT OF PRODUCT LIFE CYCLE TECHNIQUE IN REDUCING COSTS AND ACHIEVING SUSTAINABLE DEVELOPMENT GOALS, A CASE STUDY IN THE RUSTAN STEEL STRUCTURE PRODUCTION COMPANY IN ERBIL

2021 ◽  
Vol 03 (07) ◽  
pp. 314-328
Author(s):  
Ghazi Abdulazeez SULAIMAN BAG ◽  
Rafiq Faraj MAHMOOD
Keyword(s):  
Corporate Governance ◽  
Life Cycle ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Steel Structures ◽  
Product Life ◽  
Technical Requirements ◽  
The Cost ◽  
The Impact

This research was - case study in Rstin company for the steel structures in Erbil- addressed the cost technique of product life cycle, as discussed the kinds, relevance and the stages of the life cycle of the product, also it referred to the corporate governance of discussing its inception the concept and importance of the principles, objectives, and mechanisms was addressed to the technical aspects of the overlap between the cost of the product life cycle corporate governance and show the appropriate techniques used in each stage of the life cycle of the product and how it achieved by a reduction of costs. The result of this study indicates that the integration between the product life cycle cost and corporate governance works on reduce costs through the various stages of product life cycle. It also concluded that this integration increases the company ability to compete in market which leads to rise in its market share and eventually lead to maximize the profit which has been achieved through the optimal use of a company available resources. It also found that the techniques of life cycle cost of the product cannot be applied without support of the company directors, throughout the technical requirements of the application. Corporate governance ensures directors of the company to utilize firm resources which makes the company to achieve several stakeholders' objectives.

scholarly journals Model analysis and simulation on impacts of COVID-19 pandemic on the economy: a case study of Thailand’s GDP and its lock down measures

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Virus Infection ◽  
Difference Equations ◽  
Local Economy ◽  
Financial Impact ◽  
Linear Difference Equations ◽  
The Public ◽  
Growth Product ◽  
Global And Local ◽  
The Impact

COVID-19 could affect the global and local economy mainly by directly affecting production, by creation of disruption in supply chains and markets, as well as through its financial impact on firms and markets and organizations. However, the extent to which the impact is felt depends a great deal on the how governments and the public react to the disease. Here, a model is proposed to investigate the effect of the spread of corona virus infection and the consequent measures taken in response to its spread to lessen its impacts on the society and the economy. The interaction between the number of infected individuals and the variations in the national Growth Product, GDP, is modeled by a system of impulsive non-linear difference equations with delays. We are specifically interested in how different lock down measures effect business recovery as reflected by the national GDP. The model is analyzed to obtain valuable insights as to the factors that could yield different successes in the pandemic control and business recovery in various scenarios. Based on data of newly infected cases and cumulative cases weekly in Thailand, the model is simulated in a variety of scenarios to illustrate how different strategies and lockdown measures may give rise to different recovery rates.

scholarly journals The Impact Of Corruption On Economic Development: Case Study Romania

10.26458/1613 ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 33
Author(s):  
Luminita Ionescu ◽  
Florentin Caloian
Keyword(s):  
Economic Development ◽  
Financial Management ◽  
Cyber Attacks ◽  
Management Reform ◽  
The Public ◽  
Fiscal Transparency ◽  
Public Financial Management ◽  
The Impact ◽  
Geopolitical Risks

In the last decade, Romania implemented a strong legislation and a comprehensive program of public financial management reform in order to improve the national fiscal transparency and to reduce corruption.Corruption is a growing phenomenon all over the world, affecting economic development and aggravated by the legacy of the global economic crisis. The global risks are different from the past due to notably cyber attacks, new economic realities and geopolitical risks. Most of the time, corruption is associated with financial crime, fraud and bribery. Corruption is a major factor of reducing economic development and the governments must increase of macroeconomic and fiscal forecasts in order to facilitate access to the public funds.       

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