scholarly journals An Adaptive Bitrate Switching Algorithm for Speech Applications in Context of WebRTC

2021 ◽  
Vol 17 (4) ◽  
pp. 1-21
Author(s):  
Mohannad Alahmadi ◽  
Peter Pocta ◽  
Hugh Melvin
Keyword(s):  
Real Time ◽  
Data Exchange ◽  
Quality Of Experience ◽  
End User ◽  
High Quality ◽  
Content Type ◽  
Switching Algorithm ◽  
Wide Range ◽  
The Impact

Web Real-Time Communication (WebRTC) combines a set of standards and technologies to enable high-quality audio, video, and auxiliary data exchange in web browsers and mobile applications. It enables peer-to-peer multimedia sessions over IP networks without the need for additional plugins. The Opus codec, which is deployed as the default audio codec for speech and music streaming in WebRTC, supports a wide range of bitrates. This range of bitrates covers narrowband, wideband, and super-wideband up to fullband bandwidths. Users of IP-based telephony always demand high-quality audio. In addition to users’ expectation, their emotional state, content type, and many other psychological factors; network quality of service; and distortions introduced at the end terminals could determine their quality of experience. To measure the quality experienced by the end user for voice transmission service, the E-model standardized in the ITU-T Rec. G.107 (a narrowband version), ITU-T Rec. G.107.1 (a wideband version), and the most recent ITU-T Rec. G.107.2 extension for the super-wideband E-model can be used. In this work, we present a quality of experience model built on the E-model to measure the impact of coding and packet loss to assess the quality perceived by the end user in WebRTC speech applications. Based on the computed Mean Opinion Score, a real-time adaptive codec parameter switching mechanism is used to switch to the most optimum codec bitrate under the present network conditions. We present the evaluation results to show the effectiveness of the proposed approach when compared with the default codec configuration in WebRTC.

Do high-quality standards ensure higher accounting quality? A study in India

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Manish Bansal ◽  
Ashish Garg
Keyword(s):  
Value Relevance ◽  
Accounting Standards ◽  
Quality Standards ◽  
Discretionary Accruals ◽  
Accounting Quality ◽  
High Quality ◽  
Content Type ◽  
Earnings Smoothing ◽  
The Impact

Purpose The study aims to investigate the impact of International Financial Reporting Standards (IFRS)-converged standards (Indian Accounting Standards (INAS)) on the accounting quality of Indian firms. The phased manner approach of implementing INAS provides us a unique setting to investigate the issue in India. Design/methodology/approach The study used difference-in-difference (DiD) methodology, where the accounting quality is compared between test firms and benchmark firms during the pre-and post-INAS adoption period. Accounting quality is operationalized through four different constructs, namely, earnings smoothing, discretionary accruals, earnings timeliness and value relevance of earnings. Findings The findings deduced from the empirical results demonstrate that accounting quality has been significantly reduced after the adoption of INAS. In particular, results show that the degree of earnings smoothing, and the magnitude of discretionary accruals have been increased among test firms in the post-adoption year. Besides, findings provide evidence that timely recognition of losses and value relevance of earnings has been reduced for test firms relative to benchmark firms after the adoption of INAS. Practical implications The results suggest that the mere adoption of high-quality standards does not ensure higher accounting quality in countries with a weaker enforcement mechanism. Hence, stringent enforcement mechanisms are needed to ensure full compliance with accounting standards. This study serves as a case study for other emerging countries that are in the process of IFRS convergence and make them aware of the unintended consequences of IFRS adoption. Originality/value Indian authorities implemented INAS in a phased manner that provides a unique setting to use DiD methodology. DiD helps to control the impact of concurrent economic shocks, while examining the impact of the particular regulatory shock. Besides, this is the first attempt to investigate the impact of INAS on the accounting quality of Indian firms.

scholarly journals A real-time test of food hazard awareness

2015 ◽  
Vol 117 (8) ◽  
pp. 2112-2128 ◽  
Author(s):  
Caroline Millman ◽  
Dan Rigby ◽  
Davey Jones ◽  
Gareth Edwards-Jones
Keyword(s):  
Food Safety ◽  
Real Time ◽  
Hazard Identification ◽  
Training Experience ◽  
Content Type ◽  
Survey Tool ◽  
Safety Awareness ◽  
Wide Range ◽  
The Impact ◽  
Hazard Awareness

Purpose – Food poisoning attributable to the home generates a large disease burden, yet is an unregulated and largely unobserved domain. Investigating food safety awareness and routine practices is fraught with difficulties. The purpose of this paper is to develop and apply a new survey tool to elicit awareness of food hazards. Data generated by the approach are analysed to investigate the impact of oberservable heterogeneity on food safety awareness. Design/methodology/approach – The authors develop a novel Watch-and-Click survey tool to assess the level of awareness of a set of hazardous food safety behaviours in the domestic kitchen. Participants respond to video footage stimulus, in which food hazards occur, via mouse clicks/screen taps. This real-time response data is analysed via estimation of count and logit models to investigate how hazard identification patterns vary over observable characteristics. Findings – User feedback regarding the Watch-and-Click tool approach is extremely positive. Substantive results include significantly higher hazard awareness among the under 60s. People who thought they knew more than the average person did indeed score higher but people with food safety training/experience did not. Vegetarians were less likely to identify four of the five cross-contamination hazards they observed. Originality/value – A new and engaging survey tool to elicit hazard awareness with real-time scores and feedback is developed, with high levels of user engagement and stakeholder interest. The approach may be applied to elicit hazard awareness in a wide range of contexts including education, training and research.

Banking services for SMEs' internationalization: evaluating customer satisfaction

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Vincenzo Formisano ◽  
Andrea Moretta Tartaglione ◽  
Maria Fedele ◽  
Ylenia Cavacece
Keyword(s):  
Customer Satisfaction ◽  
Point Of View ◽  
Kano Model ◽  
Banking Services ◽  
Content Type ◽  
Wide Range ◽  
International Activities ◽  
The Impact ◽  
The Relationship

PurposeThe purpose of this paper is to analyse the quality of banking services provided in support of small- and medium-sized enterprises' (SMEs) internationalization from the customers' perspective.Design/methodology/approachCustomer satisfaction of 50 Italian SMEs with the banking services provided for international activities has been evaluated by adopting the Kano model's continuous and discrete analyses.FindingsResults show which banking services provided for business internationalization are necessary to satisfy customers' expectations, which services customers like having and dislike not having and which services are unexpected by customers creating a high increase in satisfaction when provided.Research limitations/implicationsThis work shows the value of the Kano model in evaluating the non-linear relationship between customer satisfaction and quality of banking services for the international activities of companies. The main limitation of this work is the limited geographical context of the investigation.Practical implicationsThis research suggests banks to transform their role in the relationship with SMEs from mere financiers to active partners committed to their growth abroad by offering a wide range of services not just financial, but also counselling and care professional, thus achieving mutual benefits.Originality/valuePrevious works on banking services and business internationalization are focussed on the transaction costs, information asymmetries and the impact of online banking. This work advances available knowledge by analysing the customer's point of view, evaluating the satisfaction of SMEs which, although more dependent on banks for their expansion abroad than large listed companies, are mostly ignored by literature.

The impact of tuberous sclerosis complex – a parent’s perspective

2016 ◽  
Vol 2 (2) ◽  
pp. 70-75
Author(s):  
Helen Willacy
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Professional Service ◽  
Content Type ◽  
Her Family ◽  
Accessible Information ◽  
Wide Range ◽  
The Impact

Purpose – The purpose of this paper is to describe the impact of having a child with tuberous sclerosis complex (TSC). Design/methodology/approach – The author explains the process her family has been through on their TSC journey. Findings – Several themes emerge from the author’s story: a lack of awareness about relatively common conditions such as epilepsy; a dearth of accessible information provided to families; delays in identification/assessment and a lack of follow up on parents’ concerns; the wide range in the quality of advice provided from one professional/service to another; the extent to which parents have to advocate for their children and the importance of social support. Originality/value – Few journal articles explore the impact of complex health conditions on families from their perspective and in their own words. This thought provoking viewpoint piece provides a powerful insight into the reality of having a child with TSC.

scholarly journals Mitigation of the Effects of Network Outage on Video QoE Using a Sender Buffer

Electronics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1209
Author(s):  
Tahir Nawaz Minhas ◽  
Markus Fiedler
Keyword(s):  
Quality Of Experience ◽  
Video Quality ◽  
Multimedia Applications ◽  
Mobile Internet ◽  
Live Streaming ◽  
End User ◽  
Analytical Relations ◽  
User Ratings ◽  
The Impact

With the growth of multimedia applications and the mobile Internet, quality sense and quality expectation of the end-user are rising rapidly. A small notable distortion in the multimedia applications may degrade the degree of delight of the user, who is very considerate of the video Quality of Experience (QoE). During live streaming, a network outage may result in video freezes and video jumps. To dampen the impact of a network outage on the video QoE, we propose the use of a well-sized sender buffer. We present the concept, derive key analytical relations, and perform a set of subjective tests. Based on those, we report a significant enhancement of user ratings due to the proposed sender buffer in the presence of network outages.

scholarly journals Does PAPI monitoring improve local governance? Evidence from a natural experiment in Vietnam

2017 ◽  
Vol 16 (1) ◽  
pp. 85-106 ◽  
Author(s):  
Long Giang ◽  
Cuong Nguyen ◽  
Anh Tran
Keyword(s):  
Natural Experiment ◽  
Public Services ◽  
Local Governance ◽  
Local Authorities ◽  
Content Type ◽  
Wide Range ◽  
Local Decision ◽  
Quality Of Governance ◽  
The Impact

Purpose The purpose of this study is to examine the effect of monitoring local authorities on the quality of governance and public services reported by citizens in Vietnam, using the Vietnam Governance and Public Administration Performance Index (PAPI) surveys. Design/methodology/approach PAPI randomly selected 200 locations in 93 districts of 30 provinces to conduct its survey in 2010, and subsequently rolled out the survey nationally in 2011 and 2012. Using 2011 and 2012 survey data, the authors compare the quality of governance and public services reported in provinces and districts that were covered in the 2011 PAPI survey with those that were not surveyed in 2010. Theories suggest that local authorities may improve their behavior if they have been surveyed and are, thus, aware that they are being monitored, leading to higher quality governance. Findings In this paper, the authors find that governance quality reported in later years by citizens in the surveyed provinces and districts of the 2010 PAPI survey was significantly higher than the quality reported by citizens in locations that were not surveyed in 2010. Monitoring appears to improve a wide range of governance aspects, including local participation in village decisions, transparency of local decision-making, accountability, administrative procedures and public service delivery. Originality/value The main innovation of this study is to use a randomized survey on governance as a natural experiment to measure the impact of monitoring on the quality of governance and public services, as reported by citizens.

Characterizing peer-judged answer quality on academic Q&A sites

2018 ◽  
Vol 70 (3) ◽  
pp. 269-287 ◽  
Author(s):  
Lei Li ◽  
Daqing He ◽  
Chengzhi Zhang ◽  
Li Geng ◽  
Ke Zhang
Keyword(s):  
Design Methodology ◽  
Specific Information ◽  
High Quality ◽  
Content Type ◽  
Social Question ◽  
History Of Art ◽  
History Of ◽  
Answer Quality ◽  
The Impact

Purpose Academic social (question and answer) Q&A sites are now utilised by millions of scholars and researchers for seeking and sharing discipline-specific information. However, little is known about the factors that can affect their votes on the quality of an answer, nor how the discipline might influence these factors. The paper aims to discuss this issue. Design/methodology/approach Using 1,021 answers collected over three disciplines (library and information services, history of art, and astrophysics) in ResearchGate, statistical analysis is performed to identify the characteristics of high-quality academic answers, and comparisons were made across the three disciplines. In particular, two major categories of characteristics of the answer provider and answer content were extracted and examined. Findings The results reveal that high-quality answers on academic social Q&A sites tend to possess two characteristics: first, they are provided by scholars with higher academic reputations (e.g. more followers, etc.); and second, they provide objective information (e.g. longer answer with fewer subjective opinions). However, the impact of these factors varies across disciplines, e.g., objectivity is more favourable in physics than in other disciplines. Originality/value The study is envisioned to help academic Q&A sites to select and recommend high-quality answers across different disciplines, especially in a cold-start scenario where the answer has not received enough judgements from peers.

scholarly journals How Different Fermentation Type Affects Volatile Composition of Plum Jerkums

2021 ◽  
Vol 11 (10) ◽  
pp. 4658
Author(s):  
Magdalena Januszek ◽  
Paweł Satora
Keyword(s):  
Volatile Compounds ◽  
Current Paper ◽  
Higher Alcohols ◽  
High Quality ◽  
Volatile Composition ◽  
Spontaneous Fermentation ◽  
Fermentation Efficiency ◽  
Yeast Strains ◽  
The Impact

Quality of plum jerkum is significantly associated to the profile of volatile compounds. Therefore, we decided to assess the impact of various fermentation types on selected properties of plum jerkums, especially compounds which contribute to the aroma of the finished product. We used the following yeast strains: S. cerevisiae S1, H. uvarum H2, and Ethanol RED (S. cerevisiae). Moreover, we considered spontaneous fermentation. S. cerevisiae and H. uvarum strains were isolated during the fermentation of Čačanska Lepotica or Węgierka Dąbrowicka (plum cultivars), respectively. As for fermentation type, spontaneous fermentation of H. uvarum H2 provided the best results. It could be associated to the fact that plum juices fermented with H. uvarum H2 presented the highest concentration of terpenoids, esters, or some higher alcohols. In the current paper, application of indigenous strains of yeasts resulted in the required oenological characteristics, e.g., highest fermentation efficiency and concentration of ethanol was determined in juices fermented with Ethanol RED (S. cerevisiae) and also with S. cerevisiae S1. Our results suggested that indigenous strains of yeasts present in plums demonstrate great potential for the production of plum jerkums of high quality.

UBAR

2021 ◽  
Vol 20 (3) ◽  
pp. 1-25
Author(s):  
Elham Shamsa ◽  
Alma Pröbstl ◽  
Nima TaheriNejad ◽  
Anil Kanduri ◽  
Samarjit Chakraborty ◽  
...  
Keyword(s):  
Resource Management ◽  
Quality Of Experience ◽  
State Of The Art ◽  
State Of Charge ◽  
User Preference ◽  
Management Approach ◽  
High Quality ◽  
Trade Off ◽  
Run Time

Smartphone users require high Battery Cycle Life (BCL) and high Quality of Experience (QoE) during their usage. These two objectives can be conflicting based on the user preference at run-time. Finding the best trade-off between QoE and BCL requires an intelligent resource management approach that considers and learns user preference at run-time. Current approaches focus on one of these two objectives and neglect the other, limiting their efficiency in meeting users’ needs. In this article, we present UBAR, User- and Battery-aware Resource management, which considers dynamic workload, user preference, and user plug-in/out pattern at run-time to provide a suitable trade-off between BCL and QoE. UBAR personalizes this trade-off by learning the user’s habits and using that to satisfy QoE, while considering battery temperature and State of Charge (SOC) pattern to maximize BCL. The evaluation results show that UBAR achieves 10% to 40% improvement compared to the existing state-of-the-art approaches.

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