scholarly journals Accuracy Performance Of E-Loran Receivers Under Cross-Rate Interference Conditions

2012 ◽  
Vol 19 (1) ◽  
pp. 133-148 ◽  
Author(s):  
Jan Šafář ◽  
Paul Williams ◽  
František Vejražka
Keyword(s):  
Signal Processing ◽  
Service Providers ◽  
Substantial Reduction ◽  
Residual Effect ◽  
Cost Effective ◽  
Business Case ◽  
Unified Framework ◽  
Negative Effects ◽  
The Impact ◽  
Accuracy Performance

Abstract According to a recent Business Case produced by the General Lighthouse Authorities of the United Kingdom and Ireland (GLAs), e-Loran is the only system that, when combined with GNSS, can achieve cost effective resilient Positioning, Navigation and Timing (PNT) by 2018 for maritime e-Navigation. The GLAs currently operate a trial e-Loran service from Harwich, UK and are working towards establishing e-Loran Initial Operational Capability (IOC) in the seven busiest UK ports and port approaches by mid-2013. A future extension of e-Loran coverage to the entire GLA service area will require the installation of additional transmitting stations. When planning the installation of e-Loran transmitters service providers will need a good understanding of the effects of the new signals on the system’s performance. Since all e-Loran stations share the same frequency band and the e-Loran signals propagate over vast distances, special attention needs to be paid to the issue of intra-system interference. This is also referred to as Cross-Rate Interference (CRI) and is inherent to the way e-Loran operates. In this paper we examine the impact of CRI on the position accuracy performance of e-Loran receivers. First, a signal processing model for a typical e-Loran receiver is developed. This could provide the e-Loran community with a unified framework for receiver performance evaluation. Numerical and, where possible, analytical results obtained from the model are then presented, describing the achievable accuracy performance under different interference conditions. The theoretical results are also compared to those obtained from measurements made on a commercially available receiver driven by a signal simulator. Our analysis shows that modern e-Loran signal processing algorithms can achieve a substantial reduction of the negative effects of CRI. However, there is still an appreciable residual effect, which should be taken into account when designing future e-Loran networks and determining their coverage and performance

Review of the impact Covid-19 has on the Psychosocial factors affecting Well-Being

2021 ◽  
pp. 3404-3408
Author(s):  
Sheila Menon FBSCH ◽  
Vidya Bhagat
Keyword(s):  
Psychosocial Factors ◽  
Health Workers ◽  
Public Awareness ◽  
Cost Effective ◽  
Well Being ◽  
Security Measures ◽  
Post Traumatic Stress ◽  
Negative Effects ◽  
Factors Affecting ◽  
The Impact

The COVID-19 pandemic has had a significant impact on the psychosocial factors that effect people globally. Particularly affected are children, students and health workers and the common symptoms identified are stress, anxiety disorders, depression and post-traumatic stress disorder. In addition, the various security measures implemented to ensure public safety have adversely affected relationships between people. This study directs public awareness to the value of psychotherapeutic support. Tele-therapy can be offered easily to people both at home or in the workplace, providing both cost effective and time sensitive solutions during times of crisis. The current review article provides an overview of the importance of maintaining psychological well-being during a pandemic and the identifies the role that empathetic communication has on wellbeing. The literature review was completed using electronic databases such as PubMed, Medline, and Scopus databases using the keywords covid-19, affected groups, affected relationships, psychology and its technological interventions, negative effects of pandemic so on.

scholarly journals Sexual Assault: Women's Voices on the Health Impacts of Not Being Believed by Police

2020 ◽  
Author(s):  
Karen McQueen ◽  
Jodie Murphy-Oikonen ◽  
Ainsley Miller ◽  
Lori Chambers
Keyword(s):  
Sexual Assault ◽  
Public Discourse ◽  
Service Providers ◽  
Cumulative Effect ◽  
Well Being ◽  
Health Impacts ◽  
Negative Effects ◽  
Women's Voices ◽  
Loss Of Self ◽  
The Impact

Abstract Background. Sexual assault is a prevalent crime against women with known negative effects on health. Recent media attention has identified that many sexual assault reports are not believed by police, and therefore coded as “unfounded”. This is consistent with public discourse of inaccurate rape myths that indicate that some women lie about sexual assault. Whereas he actual rate of false reporting is low. Negative reporting experiences of sexual assault have been associated with re-victimization and trauma among survivors. However, little is known about the impact that being sexually assaulted and not believed by police has on a survivor’s health and well-being. Thus, the purpose of this qualitative study was to explore women’s experiences of not being believed by police after sexual assault and their perceived impact on health. Results. Thematic analysis revealed three salient themes: 1) Broken Expectations, 2) Loss of Self, and 3) Cumulative Effect. Within the theme of Broken Expectations, two subthemes emerged including Loss of Trust and Re-victimization.Conclusion. The findings highlighted that not being believed by police resulted in additional mental and social burdens beyond that of the sexual assault. Many survivors felt re-victimized at a time when they needed support, leading to maladaptive coping mechanisms. Having a better understanding of the negative health impacts is important for police, health, and social service providers who may be able to positively influence reporting experience and overall health effects.

scholarly journals Use of Hydrogen in Off-Grid Locations, a Techno-Economic Assessment

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3141 ◽  
Author(s):  
Lorién Gracia ◽  
Pedro Casero ◽  
Cyril Bourasseau ◽  
Alexandre Chabert
Keyword(s):  
Hydrogen Production ◽  
Ghg Emissions ◽  
Water Electrolysis ◽  
Economic Assessment ◽  
Business Case ◽  
Diesel Generator ◽  
Negative Effects ◽  
Levelized Cost Of Electricity ◽  
Grid Solution ◽  
The Impact

Diesel generators are currently used as an off-grid solution for backup power, but this causes CO2 and GHG emissions, noise emissions, and the negative effects of the volatile diesel market influencing operating costs. Green hydrogen production, by means of water electrolysis, has been proposed as a feasible solution to fill the gaps between demand and production, the main handicaps of using exclusively renewable energy in isolated applications. This manuscript presents a business case of an off-grid hydrogen production by electrolysis applied to the electrification of isolated sites. This study is part of the European Ely4off project (n° 700359). Under certain techno-economic hypothesis, four different system configurations supplied exclusively by photovoltaic are compared to find the optimal Levelized Cost of Electricity (LCoE): photovoltaic-batteries, photovoltaic-hydrogen-batteries, photovoltaic-diesel generator, and diesel generator; the influence of the location and the impact of different consumptions profiles is explored. Several simulations developed through specific modeling software are carried out and discussed. The main finding is that diesel-based systems still allow lower costs than any other solution, although hydrogen-based solutions can compete with other technologies under certain conditions.

scholarly journals Improving the Use of Healthcare Resources in Canadian Hospitals: The Impact of a Reintegration Unit in Expanding Acute Care Capacity and Resource Use in Sunnybrook Health Sciences Centre

2020 ◽  
Author(s):  
Ivy Cheng ◽  
G. Ross Baker ◽  
Debra Carew ◽  
Stacy Landau ◽  
Debra Walko ◽  
...  
Keyword(s):  
Service Providers ◽  
Patient Flow ◽  
Business Case ◽  
Level Of Care ◽  
Term Care ◽  
Healthcare Budget ◽  
Hospital Capacity ◽  
Alternate Level Of Care ◽  
Care Capacity ◽  
The Impact

Abstract Background: Alternate level of care (ALC) patients are those who reside in acute hospital beds but can be managed in non-hospital settings. They contribute to high occupancy levels in Canadian hospitals. Between 2017-18, Ontario spent 1.1 billion dollars on hospitalized patients waiting for alternate level of care (ALC) beds. To improve value for care, Ontario Ministry of Health (MOHLTC) invested into reintegration units which are designed to transfer ALC patients out of hospital and transition them back into the community or long-term care (LTC). Given today’s healthcare budget pressures, it is unclear if reactivation units are feasible. In 2018, the MOHLTC funded a reintegration unit, Pine Villa with an operational partner, Sunnybrook Hospital and community service providers (SPRINT Senior Care, LOFT) in Toronto, Ontario. The objective was to determine averted costs for ALC-patients and impact on Sunnybrook patient flow-through if ALC-patient Pine Villa transfers occurred on the day of ALC readiness. Methods: Retrospective, observational analysis of Sunnybrook ALC-patients discharged to Pine Villa between January 9, 2018 to February 4, 2019. From the healthcare payer’s perspective (MOHTLC), cost analysis was modelled for ALC patients designated for 1) LTC and 2) home with supports. Avoided costs at time of ALC readiness were determined by case-costing. Averted hospital ALC days were established. Results: If ALC patients were transferred to Pine Villa at time of ALC readiness for LTC, the healthcare system could have averted 5.4 million dollars from Sunnybrook. If the patients were transferred for home, 2.3 million dollars could have been averted. Both models increased acute Sunnybrook Hospital capacity by 34 beds. Conclusion: There is a business case supporting reintegration units if ALC-patients are discharged from the hospital on the day of ALC-readiness.

scholarly journals The impact of the gender composition of company boards on firm performance

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Teodora-Maria Soare ◽  
Céline Detilleux ◽  
Nick Deschacht
Keyword(s):  
Firm Performance ◽  
Organizational Performance ◽  
Policy Reform ◽  
Causal Effect ◽  
Business Case ◽  
Gender Composition ◽  
Negative Effects ◽  
Content Type ◽  
Gender Quota ◽  
The Impact

PurposeThe authors estimate the effect of the gender composition of company boards on firm performance by exploiting variation in the percentage of women after the implementation of a 2011 Belgian policy reform, which introduced a gender quota for listed companies.Design/methodology/approachThe authors analyze the evolution of firm performance between companies that were subjected to the quota law and compare it with the performance of similar firms that were not subjected to the law. This difference-in-difference (DiD) approach allows the authors to avoid the potential bias resulting from unobserved firm characteristics.FindingsThe authors find that the quota policy resulted in the replacement of about one male director by a female one in the average firm between 2010 and 2017. However, this increase in diversity appears to have negatively affected some firm performance indicators. The authors find statistically significant negative effects for 10 out of the 23 financial indicators included in this study, while the other 13 indicators showed no significant effect.Originality/valueThe originality of this research lies in both the methodology and the findings. The policy reform that the authors study can be regarded as a natural experiment so that the DiD method provides estimates of the causal effect of the gender composition of company boards on firm performance. To the best of the authors’ knowledge, this is the first study that presents causal evidence of negative effects of gender quota on organizational performance. These results cast doubts on the business case argument for gender quota and show that results from correlational studies are likely to be biased upward.

User Perceptions of the Usefulness of E-Mail and Instant Messaging

2011 ◽  
pp. 321-329
Author(s):  
Philip Houle ◽  
Troy Strader ◽  
Sridhar Ramaswami
Keyword(s):  
Public Policy ◽  
Service Providers ◽  
Instant Messaging ◽  
Perceived Usefulness ◽  
Negative Effects ◽  
Policy Makers ◽  
User Perceptions ◽  
Expected Result ◽  
The Impact ◽  
E Mail

This chapter describes research that explores the impact of unsolicited traffic on the perceived usefulness of electronic message technologies. Two technologies were explored: e-mail and instant messaging. The hypothesis is that unsolicited message traffic would have negative effects on the perceived usefulness of the technologies. However, the findings did not support this expected result. Users of the technologies appear to cope with the unsolicited traffic in a variety of ways. The implications of results are discussed from the perspective of managers, researchers, marketers, service providers, and public policy makers.

scholarly journals Towards Effective Control of P2P Traffic Aggregates in Network Infrastructures

2015 ◽  
Vol 11 (1) ◽  
pp. 37 ◽  
Author(s):  
Pedro Sousa
Keyword(s):  
Traffic Engineering ◽  
Service Providers ◽  
Cost Effective ◽  
Effective Control ◽  
Single Server ◽  
Internet Service ◽  
P2p Systems ◽  
Network Links ◽  
P2p Applications ◽  
The Impact

Nowadays, many P2P applications proliferate in the Internet. The attractiveness of many of these systems relies on the collaborative approach used to exchange large resources without the dependence and associated constraints of centralized approaches where a single server is responsible to handle all the requests from the clients. As consequence, some P2P systems are also interesting and cost-effective approaches to be adopted by content providers and other Internet players. However, there areseveral coexistence problems between P2P applications and Internet Service Providers (ISPs) due to the unforeseeable behavior of P2P traffic aggregates in ISP infrastructures.In this context, this work proposes a collaborative P2P/ISPsystem able to underpin the development of novel Traffic Engineering (TE) mechanisms contributing for a better coexistence between P2P applications and ISPs. Using the devised system, two TE methods are described being able to estimate and control the impact of P2P traffic aggregates on the ISP network links. One of the TE methods allows that ISP administrators are able to foresee the expected impact that a given P2P swarm will have in the underlying network infrastructure. The other TE method enables the definition of ISP friendly P2P topologies, where specific network links are protected from P2P traffic. As result, the proposed system and associated mechanisms will contributefor improved ISP resource management tasks and to foster the deployment of innovative ISP-friendly systems.

The More Control, the Better?

2014 ◽  
Vol 26 (2) ◽  
pp. 81-91 ◽  
Author(s):  
Jeeyun Oh ◽  
Mun-Young Chung ◽  
Sangyong Han
Keyword(s):  
Mixed Design ◽  
Negative Effects ◽  
Story Structure ◽  
Content Type ◽  
High User ◽  
User Control ◽  
Rigorous Research ◽  
Control Versus ◽  
The Media ◽  
The Impact

Despite of the popularity of interactive movie trailers, rigorous research on one of the most apparent features of these interfaces – the level of user control – has been scarce. This study explored the effects of user control on users’ immersion and enjoyment of the movie trailers, moderated by the content type. We conducted a 2 (high user control versus low user control) × 2 (drama film trailer versus documentary film trailer) mixed-design factorial experiment. The results showed that the level of user control over movie trailer interfaces decreased users’ immersion when the trailer had an element of traditional story structure, such as a drama film trailer. Participants in the high user control condition answered that they were less fascinated with, absorbed in, focused on, mentally involved with, and emotionally affected by the movie trailer than participants in the low user control condition only with the drama movie trailer. The negative effects of user control on the level of immersion for the drama trailer translated into users’ enjoyment. The impact of user control over interfaces on immersion and enjoyment varies depending on the nature of the media content, which suggests a possible trade-off between the level of user control and entertainment outcomes.

Monetary policy and the effect of the transfer of oil prices to inflation

2020 ◽  
pp. 41-50
Author(s):  
Ph. S. Kartaev ◽  
I. D. Medvedev
Keyword(s):  
Monetary Policy ◽  
Inflation Targeting ◽  
Dynamic Models ◽  
Oil Prices ◽  
Oil Price ◽  
Oil Price Shocks ◽  
Negative Effects ◽  
Price Shocks ◽  
Policy Regime ◽  
The Impact

The paper examines the impact of oil price shocks on inflation, as well as the impact of the choice of the monetary policy regime on the strength of this influence. We used dynamic models on panel data for the countries of the world for the period from 2000 to 2017. It is shown that mainly the impact of changes in oil prices on inflation is carried out through the channel of exchange rate. The paper demonstrates the influence of the transition to inflation targeting on the nature of the relationship between oil price shocks and inflation. This effect is asymmetrical: during periods of rising oil prices, inflation targeting reduces the effect of the transfer of oil prices, limiting negative effects of shock. During periods of decline in oil prices, this monetary policy regime, in contrast, contributes to a stronger transfer, helping to reduce inflation.

Retrospective analysis of the resilience of Russian regions as socio-economic systems

2019 ◽  
pp. 46-64 ◽  
Author(s):  
Vladimir V. Klimanov ◽  
Sofiya М. Kazakova ◽  
Anna A. Mikhaylova
Keyword(s):  
Panel Data ◽  
Economic Systems ◽  
Financial Indicators ◽  
Russian Regions ◽  
Integral Index ◽  
Negative Effects ◽  
Economic Resilience ◽  
Correlation Dependence ◽  
The Impact ◽  
The Relationship

The article examines the impact of various socio-economic and financial indicators on the resilience of Russian regions. For each region, the integral index of resilience is calculated, and its correlation dependence with the selected indicators is revealed. The study confirms the relationship between fiscal resilience and socio-economic resilience of the regions. The analysis of panel data for 75 regions from 2007 to 2016 shows that there are significant differences in the dynamics of indicators in different periods. In particular, the degree of exposure to the negative effects of the crises of 2008—2009 and 2014—2015 in non-resilient regions is higher than in resilient ones.

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