scholarly journals Dynamic vibration testing of fasteners: fastener self-loosening theory, vibration testing practical applications, comparison of the international standards and recommendations on how to set-up a meaningful testing protocol

2018 ◽  
Vol 106 (3) ◽  
pp. 307 ◽  
Author(s):  
Franck Pichoff ◽  
Matthieu Kummel ◽  
Morten Schiff
Keyword(s):  
Real Life ◽  
International Standards ◽  
National Standard ◽  
Vibration Testing ◽  
Practical Applications ◽  
Testing Strategies ◽  
Testing Protocol ◽  
The Usa ◽  
Set Up ◽  
Standardised Testing

Vibration can be desirable, such as when it is used to make music. More often, however, vibration is undesirable. It can introduce stress into mechanical systems and create fatigue that decreases service life. It can also loosen fasteners. Following a discussion on the root causes of the self-loosening of fasteners, two practical examples illustrate the benefits and possible applications of vibration testing of fasteners, according to either standardised testing protocols or customised testing strategies simulating real-life conditions of the assembled parts. The requirements and protocols of the international standard ISO 16130, the USA national aerospace standard NASM 1312-7, the German national standard DIN 25201-4 B and its predecessor DIN 65151 are compared, with insights on their most suitable applications. Finally, the article describes a lean methodology to design a meaningful testing protocol.

scholarly journals Trends in educational mobility: How does China compare to Europe and the United States?

2019 ◽  
Vol 5 (2) ◽  
pp. 214-240
Author(s):  
Rob J Gruijters ◽  
Tak Wing Chan ◽  
John Ermisch
Keyword(s):  
Educational Opportunity ◽  
The United States ◽  
International Standards ◽  
Educational Mobility ◽  
The Us ◽  
The Usa ◽  
Economic Boom ◽  
The Uk ◽  
Large Decline ◽  
Inequality Of Educational Opportunity

Despite an impressive rise in school enrolment rates over the past few decades, there are concerns about growing inequality of educational opportunity in China. In this article, we examine the level and trend of educational mobility in China, and compare them to the situation in Germany, the Netherlands, the UK and the USA. Educational mobility is defined as the association between parents’ and children’s educational attainment. We show that China’s economic boom has been accompanied by a large decline in relative educational mobility chances, as measured by odds ratios. To elaborate, relative rates of educational mobility in China were, by international standards, quite high for those who grew up under state socialism. For the most recent cohorts, however, educational mobility rates have dropped to levels that are comparable to those of European countries, although they are still higher than the US level.

Born Digital? Digitization and the Birth of the Moroccan National Archives

2020 ◽  
Vol 47 ◽  
pp. 195-218
Author(s):  
Nora El Qadim
Keyword(s):  
Public Policy ◽  
Good Governance ◽  
International Standards ◽  
Archival Institution ◽  
National Archives ◽  
The Creation ◽  
Set Up

Abstract:This article examines the digitization policy of Archives du Maroc (AdM), Morocco’s national archival institution, which was set up in 2011 and opened in 2013. Given its recent creation, the AdM lead us to question the particularity of digitization in archiving policies when included from the start rather than retroactively. Through an analysis of the creation and development of AdM as a public policy connected to national efforts at transparency and “good governance,” I argue that digitization has served as a way of performing modernity through technology and international standards, thus reinforcing the legitimacy of a nascent institution.

Discussion on Determination of Non-Methane Hydrocarbons

2014 ◽  
Vol 1073-1076 ◽  
pp. 562-566
Author(s):  
Zhe Min Li
Keyword(s):  
International Standards ◽  
National Standards ◽  
National Standard ◽  
Measure Methods

This paper summarized the measure methods which include both Chinese national standards and international standards of how to determine the concentration of Non-methane Hydrocarbons (NMHC).Some problems and suggestions were discussed in this paper to improve the level of the measure methods and prompt the establishment of relative Chinese national standard.

Real-world clinical outcomes study of sequential novel antihormonal therapy (NAH) or radium-223 (Ra-223) treatment of metastatic castration-resistant prostate cancer (mCRPC) that progressed after first-line NAH.

2021 ◽  
Vol 39 (6_suppl) ◽  
pp. 48-48
Author(s):  
Oliver A. Sartor ◽  
Daniel J. George ◽  
Bertrand Tombal ◽  
Celestia S. Higano ◽  
Cora N. Sternberg ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Real Life ◽  
Patient Characteristics ◽  
Castration Resistant Prostate Cancer ◽  
First Line ◽  
Highly Active ◽  
Radium 223 ◽  
Alpha Emitter ◽  
Antihormonal Therapy ◽  
The Usa

48 Background: We assessed real-life clinical outcomes in patients with mCRPC treated in the USA who received sequential first-line (1L)/second-line (2L) NAH (abiraterone/enzalutamide or enzalutamide/abiraterone) or switched to a different mechanism of action (alpha-emitter Ra-223) after progression on 1L NAH. Methods: This was a retrospective study (PHENIX, NCT03896984) of the Flatiron electronic health record database in patients with mCRPC that progressed on 1L NAH and started 2L monotherapy with Ra-223 (n=120) or NAH (n=226) between Jan 2013 and Dec 2018. Patient characteristics, overall survival (OS) from 2L start, and symptomatic skeletal events (SSEs) were analyzed descriptively. Results: The two cohorts were generally similar at 2L start, including similar rates of bone-health agent (BHA) use, but the Ra-223 cohort had a higher incidence of bone-only metastases, shorter duration of 1L NAH, and higher rate of prior SSEs than the 2L NAH cohort (Table). Median treatment duration was 5.6 mo (median 4.5 doses) for Ra-223 and 4.7 mo for 2L NAH. Median OS from 2L start was 10.8 mo for Ra-223 and 11.2 mo for 2L NAH, with 49% and 39%, respectively, receiving subsequent therapy. Among those who received subsequent therapy, the proportion who received subsequent taxane was lower in the Ra-223 cohort (47%) than in the 2L NAH cohort (76%). SSEs were observed after 2L start in 32 patients (27%) on Ra-223 and 49 (22%) on 2L NAH. Conclusions: OS from start of 2L mCRPC treatment was similar for patients who received Ra-223 or alternative NAH in 2L. Slightly more patients received subsequent therapy in the Ra-223 cohort than in the 2L NAH cohort. Patients who received subsequent therapy were more likely to receive chemotherapy in the 2L NAH cohort, which is unsurprising as 2L NAH after 1L NAH is not highly active. Although the prior SSE rate before 2L start was higher in the Ra-223 cohort than in the 2L NAH cohort, and the two cohorts had similar rates of BHA use at 2L start, the rate of SSEs after 2L start was similar in both cohorts. Clinical trial information: NCT03896984. [Table: see text]

scholarly journals The use of real life contexts in the CTA: Some unintended consequences

Pythagoras ◽  
2009 ◽  
Vol 0 (69) ◽  
Author(s):  
Sarah Bansilal
Keyword(s):  
South Africa ◽  
Real Life ◽  
Unintended Consequences ◽  
Assessment Programme ◽  
Assessment Tasks ◽  
The Usa ◽  
The Common ◽  
The Uk ◽  
Assessment Activities

The Common Tasks for Assessment (CTA) was a new assessment programme that was introduced in 2002 in South Africa for all Grade 9 learners. The purpose of this paper is to articulate some concerns around the use of contextualised assessment activities in the CTA. The study reported here was carried out in 2003. Data for the study was generated from lesson observations and interviews with the participant teachers and groups of learners. It is argued that although the intentions behind the design of the CTA are well meaning and noble, there are in fact some learners who may be unintentionally disadvantaged by the design of the CTA which uses an extended context as a source for all the assessment tasks. In this paper two unintended consequences of using ‘real life’ contexts are identified and the implications of these are discussed, by linking the observations to research carried out in the UK and the USA.

scholarly journals Cohort profile : Bandim Health Project’s (BHP) rural Health and Demographic Surveillance System (HDSS)—a nationally representative HDSS in Guinea-Bissau

BMJ Open ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. e028775 ◽  
Author(s):  
Sanne Marie Thysen ◽  
Manuel Fernandes ◽  
Christine Stabell Benn ◽  
Peter Aaby ◽  
Ane Bærent Fisker
Keyword(s):  
Rural Health ◽  
Surveillance System ◽  
Real Life ◽  
Demographic Surveillance System ◽  
Health Interventions ◽  
Bed Nets ◽  
Guinea Bissau ◽  
Women And Children ◽  
Nationally Representative ◽  
Set Up

PurposeBandim Health Project (BHP) monitors health and survival of women and children in a nationally representative rural Health and Demographic Surveillance System (HDSS) in Guinea-Bissau. The HDSS was set up in 1989–1990 to collect data on health interventions and child mortality.ParticipantsThe HDSS covers 182 randomly selected clusters across the whole country. The cohort is open, and women and children enter the cohort, when they move into the selected clusters, and leave the cohort, when they move out or die, or when children reach 5 years of age. Data are collected through biannual or more frequent household visits. At all village visits, information on pregnancies, vital status, vaccination status, arm circumference, use of bed nets and other basic information is collected for women and children. Today, more than 25 000 women and 23 000 children below the age of 5 years are under surveillance.Findings to dateResearch from the BHP has given rise to the hypothesis that vaccines, in addition to their targeted effects, have important non-specific effects altering the susceptibility to other infections. Initially, it was observed that mortality among children vaccinated with the live BCG or measles vaccines was much lower than the mortality among unvaccinated children, a difference, which could not be explained by prevention of tuberculosis and measles infections. In contrast, mortality tended to be higher for children who had received the non-live Diphtheria-Tetanus-Pertussis vaccine compared with children who had not received this vaccine. Since the effect differed for the different vaccines, no bias explained the contrasting findings.Future plansNew health interventions are introduced with little assessment of real-life effects. Through the HDSS, we can describe both the implementation of interventions (eg, the vaccination programme) and their effects. Furthermore, the intensive follow-up allows the implementation of randomised trials testing potential better vaccination programmes.

scholarly journals A International standards and rules for interaction between public authori-ties during the Covid-19 pandemic

2021 ◽  
Vol 7 (Extra-D) ◽  
pp. 480-490
Author(s):  
Tatyana Viktorovna Gololobova ◽  
Salavat Khamitovich Sarmanaev ◽  
Sergey Zenin ◽  
Aleksey Yuryevich Shirokov ◽  
Georgiy Nikolaevich Suvorov
Keyword(s):  
International Standards ◽  
World Health ◽  
Federal State ◽  
Public Authorities ◽  
The Core ◽  
Special Scientific ◽  
Legal Model ◽  
The Usa ◽  
Health Organization ◽  
Rules And Standards

The study aims at identifying the core rules and standards for forming a legal model of inter-action between levels of public authority in a federal state during a pandemic. The authors have considered documents that regulate the process of interaction between public authorities during the coronavirus pandemic, as well as the doctrinal sources of law in Belgium, Germany, Canada, the USA, Switzerland, and Australia. In addition, they have analyzed the acts of the World Health Organization adopted during the COVID-19 epidemic and containing recom-mendations on the interaction of public authorities during a pandemic. The research methods were as follows: general philosophical, general and special scientific (structural-legal, compara-tive-legal, and formal-legal The authors have concluded that it is possible to introduce separate rules and standards for such interaction of public authorities during the period of a pandemic into the Russian legal system.

Feature Subspace Estimation for Resolving Dimensionality Mismatch in Practical Color-Based Face Recognition Systems

2016 ◽  
Vol 30 (04) ◽  
pp. 1656004 ◽  
Author(s):  
Jae Young Choi
Keyword(s):  
Face Recognition ◽  
Color Image ◽  
Recognition Performance ◽  
Real Life ◽  
Practical Applications ◽  
Novel Approach ◽  
Feature Subspace ◽  
New Feature ◽  
Different Color ◽  
Input Level

Recently, considerable research efforts have been devoted to effective utilization of facial color information for improved recognition performance. Of all color-based face recognition (FR) methods, the most widely used approach is a color FR method using input-level fusion. In this method, augmented input vectors of the color images are first generated by concatenating different color components (including both luminance and chrominance information) by column order at the input level and feature subspace is then trained with a set of augmented input vectors. However, in practical applications, a testing image could be captured as a grayscale image, rather than as a color image, mainly caused by different, heterogeneous image acquisition environment. A grayscale testing image causes so-called dimensionality mismatch between the trained feature subspace and testing input vector. Disparity in dimensionality negatively impacts the reliable FR performance and even imposes a significant restriction on carrying out FR operations in practical color FR systems. To resolve the dimensionality mismatch, we propose a novel approach to estimate new feature subspace, suitable for recognizing a grayscale testing image. In particular, new feature subspace is estimated from a given feature subspace created using color training images. The effectiveness of proposed solution has been successfully tested on four public face databases (DBs) such as CMU, FERET, XM2VTSDB, and ORL DBs. Extensive and comparative experiments showed that the proposed solution works well for resolving dimensionality mismatch of importance in real-life color FR systems.

Ten years of Journal of Accounting in Emerging Economies: a review and bibliometric analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Khakan Najaf ◽  
Osama Atayah ◽  
Susela Devi
Keyword(s):  
Content Analysis ◽  
Financial Reporting ◽  
Emerging Economies ◽  
Audit Quality ◽  
Earnings Quality ◽  
International Standards ◽  
Annual Growth Rate ◽  
Accounting Disclosure ◽  
Content Type ◽  
The Usa

PurposeThe Journal of Accounting in Emerging Economies (JAEE), established in 2011, aims to publish research on contemporary accounting issues in emerging economies. This study used the bibliometric and scientometric approaches to provide deeper insights into the journal performance, prominent topics, author's contributions and citation structure. Content analysis was conducted to provide insights on the major themes addressed in JAEE.Design/methodology/approachThis study analyses data from the Scopus database, Google Scholar and Journal website. The total number of documents analysed are 190. This study employs VOSviewer and RStudio to conduct the analysis which is categorised into four major parts: General performance indicators, citation structure, network analysis and content analysis.FindingsSince JAEE commenced publication in 2011 and indexed in the Scopus in 2018, it achieved a 14.47% annual growth rate in document publication. It is encouraging to note that 88.4% of published documents were cited. In terms of total publication, the top contributing country is Malaysia; the USA is the primary contributor in citations. Five key themes emerged from the content analysis namely, international standards and earnings quality; audit quality and IFRS practices in emerging economies; corporate governance; financial reporting and earnings management; corruption and accounting disclosure; and ownership structure and firm performance.Originality/valueThis study offers a comprehensive assessment to the journal stakeholders about the past and current journal performance besides future trends and perspectives. Additionally, JAEE readers can gain insight into the nature of academic contributions in JAEE from 299 authors of 273 affiliated institutions in 67 countries.

3D Printing Applications in STEM Education

2018 ◽  
pp. 2626-2640
Author(s):  
Norman Gwangwava ◽  
Catherine Hlahla
Keyword(s):  
3D Printing ◽  
Real Life ◽  
Printing Technology ◽  
Web Based ◽  
Practical Applications ◽  
3D Printing Technology ◽  
Lecture Room ◽  
Storage Products ◽  
Educational Toys ◽  
Learning Institutions

Using 3D printing technology in learning institutions brings an industrial experience to learners as well as an exposure to the same cutting-edge technologies encountered in real life careers. The chapter explores 3D printing technology at kindergarten (preschool), in the lecture room (BEng programme), and ready-to-use 3D printed products. In educational toy applications, the effect of poor product designs that do not meet the children's dimensional and safety requirements can lead to injuries, development of musculoskeletal disorders and health problems, some of which may be experienced by the children when they grow up. In order to address the problem of poor design, measurements of anthropometric dimensions from male and female children, aging from 6 to 7 years old were taken and concepts for educational toys were then generated. Other practical applications of the 3D printing technology explored in the chapter are lecture room demonstrations, prototyping of design projects and a web-based mass-customization of office mini-storage products.

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