Individual Differences within and across Feedback Suppression Hearing Aids

2008 ◽  
Vol 19 (10) ◽  
pp. 748-757 ◽  
Author(s):  
Todd Ricketts ◽  
Earl Johnson ◽  
Jeremy Federman
Keyword(s):  
Individual Differences ◽  
Hearing Aids ◽  
Descriptive Study ◽  
Measurement Methods ◽  
Single Individual ◽  
Considerable Variability ◽  
Individual Subject ◽  
Feedback Suppression ◽  
Improved Methods ◽  
Made In

Background: New and improved methods of feedback suppression are routinely introduced in hearing aids; however, comparisons of additional gain before feedback (AGBF) values across instruments are complicated by potential variability across subjects and measurement methods. Purpose: To examine the variability in AGBF values across individual listeners and an acoustic manikin. Research Design: A descriptive study of the reliability and variability of the AGBF measured within six commercially available feedback suppression (FS) algorithms using probe microphone techniques. Study Sample: Sixteen participants and an acoustic manikin. Results: The range of AGBF across the six FS algorithms was 0 to 15 dB, consistent with other recent studies. However, measures made in the participants ears and on the acoustic manikin within the same instrument suggest that across instrument comparisons of AGBF measured using acoustic manikin techniques may be misleading, especially when differences between hearing aids are small (i.e., less than 6 dB). Individual subject results also revealed considerable variability within the same FS algorithms. The range of AGBF values was as small as 7 dB and as large as 16 dB depending on the specific FS algorithm, suggesting that some models are much more robust than others. Conclusions: These results suggest caution when selecting FS algorithms clinically since different models can demonstrate similar AGBF when averaging across ears, but result in quite different AGBF values in a single individual ear.

An Update on Improved Flange Design Methods

2007 ◽  
Author(s):  
Warren Brown
Keyword(s):  
Design Method ◽  
Design Methods ◽  
Project Development ◽  
Design Improvement ◽  
Panel Session ◽  
Improved Methods ◽  
Made In

This paper details further progress made in the PVRC project “Development of Improved Flange Design Method for the ASME VIII, Div.2 Rewrite Project” presented during the panel session on flange design at the 2006 PVP conference in Vancouver. The major areas of flange design improvement indicated by that project are examined and the suggested solutions for implementing the improved methods into the Code are discussed. Further analysis on aspects such as gasket creep and the use of leakage-based design has been conducted. Shortcomings in the proposed ASME flange design method (ASME BFJ) and current CEN flange design methods (EN-1591) are highlighted and methods for resolution of these issues are suggested.

scholarly journals Correlation between Campanacci’s radiological classification of giant cell tumor of bone and expression of Cyclin D1 and PCNA

2017 ◽  
Vol 7 (1) ◽  
pp. 47
Author(s):  
Eréndira G. Estrada-Villaseñor ◽  
Hidalgo Bravo Alberto ◽  
C. Bandala ◽  
P. De la Garza-Montano ◽  
Reyes Medina Naxieli ◽  
...  
Keyword(s):  
Cyclin D1 ◽  
Giant Cell Tumor ◽  
Giant Cell ◽  
Descriptive Study ◽  
Cell Tumor ◽  
Giant Cell Tumors ◽  
Radiological Classification ◽  
Tumors Of Bone ◽  
Made In

Giant cell tumor of bone is considered by his behavior a benign but aggressive neoplasm. The objective of our study was to determine if there is a correlation between the Campanacci’s radiological classification of giant cell tumors of bone and the expression by immunohistochemistry of Cyclin D1 and proliferation cell nuclear antibody (PCNA). A retrospective and descriptive study was made. In total, there were 27 cases. All cases showed Cyclin D1 and PCNA positivity. Rho Spearman for Campanacci and Cyclin D1 expression was 0.06 and for Campanacci and PCNA was 0.418. We conclude that there is a positive correlation between PCNA expression in giant cell tumors of Bone and the Campanacci’s radiological classification II and III, butCyclin D1 expression was no related with radiologic features.

scholarly journals PRETERM LABOUR

2010 ◽  
Vol 17 (01) ◽  
pp. 84-90
Author(s):  
FARZANA LATIF ◽  
BUSHRA BANO ◽  
UZMA HUSSAIN
Keyword(s):  
Glyceryl Trinitrate ◽  
Uterine Contraction ◽  
Preterm Labour ◽  
Descriptive Study ◽  
Transdermal Patch ◽  
Uterine Contractions ◽  
Non Invasive ◽  
The Mean ◽  
Study Setting ◽  
Made In

Objective: To compare the efficacy of Glyecryl trinitrate patch for prolonging gestation for more than 48 hours, 7 days or upto 37 weeks of gestation with Salbutamol in preterm labour. Study Design: Compartive descriptive study. Setting: Fatima Memorial HospitalLahore. Period: Dec 2003 to Jan 2005. Patients & Methods: The study was carried out on 60 pregnant patients admitted in hospital with thesymptoms and signs of preterm labour. The results were statistically analyzed using SPSS version 8.0. Results: Two groups (TransdermalGlyceryl Trinitrate group and Salbutamol) comprising 30 patients each were made. In Glyceryl Trinitrate group, transdermal patch was appliedand in Salbutamol group,. Intravenous infusion titrated according to frequency, duration and intensity of uterine contractions. All the patientsin each group were evaluated for prolongation of gestation for 48 hours till 37th week of gestation. The mean prolongation of pregnancy was26 days in GTN group and 32 days in Salbutamol group. The decrease in frequency of uterine contractions by 67.51 ± 7.74% in first 48 hoursof applying transdermal Glyceryl Trinitrate patch and by 80.14 ± 8.43 % in Salbutamol group which was statistically significant. Conclusion:Trinitrate appears to be a safe, well tolerated and non-invasive but less effectives method of suppressing uterine contraction in preterm labouras compared to Salbutamol.

scholarly journals THE HOSPITAL EPIDEMIOLOGICAL SURVEILLANCE NETWORK AS NA INSRUMENT FOR THE STRENGTHENING OF COMPULSORY DISEASE AND CONSEQUENTIAL NOTIFICATION, PERNAMBUCO 2018

2021 ◽  
pp. 12
Author(s):  
◽  
Keyword(s):  
Decision Making ◽  
Information System ◽  
Descriptive Study ◽  
Health Surveillance ◽  
Data Sources ◽  
Epidemiological Surveillance ◽  
Surveillance Network ◽  
Study Type ◽  
Compulsory Notification ◽  
Made In

Objetive: Describe the contribution of the State Hospital Epidemiological Surveillance Network of Pernambuco (VEH/PE) for the registration of cases of diseases and conditions of immediate compulsory notification, in Pernambuco, 2018. Methods: Descriptive study, type of experience report, of surveillance of 31 hospitals of the VEH / PE Network, in 2018. The data sources were from the Notifiable Diseases Information System and the data referring to DNCI were from FormSus, available on the Center’s Platform Strategic Health Surveillance Information. The proportions of notifications for Compulsory Notification Disease from the VEH/PE Network were calculated in relation to the total number of notifications made at Sinan. Results: Among the DNC notifications registered by Sinan (Net, Online and Web influenza, 30,1% came from the 31 hospitals of the VEH/PE Network. When analyzed, by information system, the Network was responsible for 28,4% of the records made in Sinan Net by 2.687 reporting units, in Sinan Online, 25,9% in relation to 1.247 reporting units and for Sinan Web Influenza the contribution was 82,3% in relation to the 69 reporting units. Immediate compulsory notification diseases/conditions communicated to CIEVS, 50,2% of the communications came from the Network As for the opportunity for immediate notification of diseases and conditions, 90,7% were communicated in due time by the VEH/PE Network. Conclusion: It is important to strengthen the Network aiming at surveillance, disease/disease control and operationalization of information systems, in order to support the manager in decision making.

Introduction to Psychophysiology of Human Personality

2017 ◽  
pp. 1-26
Keyword(s):  
Individual Differences ◽  
Psychological Functioning ◽  
Historical Data ◽  
Measurement Methods ◽  
Personality Psychology ◽  
Human Personality ◽  
Biological Basis ◽  
Research Questions ◽  
Personality Theories ◽  
Psychological Concepts

The analysis of historical data has shown that there have been numerous attempts in exploring and understanding individual differences in human personality. Many of them have been using the arousal construct seemed as the most dominant one. Since then, personality psychology has revealed many personality theories and measurement methods as a theoretical and methodological frame in understanding human personality. Besides that, the same researchers and many others have tried to explain human personality and its various psychological concepts using different psychophysiological methods. Therefore, contemporary psychophysiology of personality includes all research on the biological basis of personality underlying trait-like differences in psychological functioning. This section will provide a detailed overview of the psychophysiology of human personality along with the most intriguing research questions.

scholarly journals Individual differences in human voice pitch are preserved from speech to screams, roars and pain cries

2020 ◽  
Vol 7 (2) ◽  
pp. 191642 ◽  
Author(s):  
Katarzyna Pisanski ◽  
Jordan Raine ◽  
David Reby
Keyword(s):  
Individual Differences ◽  
Considerable Variability ◽  
Voice Pitch ◽  
Men And Women ◽  
Human Voice ◽  
Social Traits ◽  
Nonverbal Vocalizations ◽  
Acoustic Analyses ◽  
Socially Relevant

Fundamental frequency ( F 0, perceived as voice pitch) predicts sex and age, hormonal status, mating success and a range of social traits, and thus functions as an important biosocial marker in modal speech. Yet, the role of F 0 in human nonverbal vocalizations remains unclear, and given considerable variability in F 0 across call types, it is not known whether F 0 cues to vocalizer attributes are shared across speech and nonverbal vocalizations. Here, using a corpus of vocal sounds from 51 men and women, we examined whether individual differences in F 0 are retained across neutral speech, valenced speech and nonverbal vocalizations (screams, roars and pain cries). Acoustic analyses revealed substantial variability in F 0 across vocal types, with mean F 0 increasing as much as 10-fold in screams compared to speech in the same individual. Despite these extreme pitch differences, sexual dimorphism was preserved within call types and, critically, inter-individual differences in F 0 correlated across vocal types ( r = 0.36–0.80) with stronger relationships between vocal types of the same valence (e.g. 38% of the variance in roar F 0 was predicted by aggressive speech F 0). Our results indicate that biologically and socially relevant indexical cues in the human voice are preserved in simulated valenced speech and vocalizations, including vocalizations characterized by extreme F 0 modulation, suggesting that voice pitch may function as a reliable individual and biosocial marker across disparate communication contexts.

Lifting the veil: the circumstances that caused Alfred Wegener's death on the Greenland icecap, 1930

Polar Record ◽  
2000 ◽  
Vol 36 (197) ◽  
pp. 139-154 ◽  
Author(s):  
Cornelia Lüdecke
Keyword(s):  
Weather Conditions ◽  
Single Individual ◽  
Geographical Society ◽  
Memorial Address ◽  
German Science ◽  
The Veil ◽  
A Chain ◽  
Bad Weather ◽  
Shed Light ◽  
Made In

AbstractWhen the Geographical Society of Berlin officially welcomed Alfred Wegener's expedition back from Greenland in 1931, a memorial address was made in honour of the expedition leader who died on the Greenland icecap in 1930. This address included a report that shed light on the difficulties that had confronted the expediton. Wegener was remembered as a researcher who provided an example of ‘a magnificent conception of his duty as leader’ and who risked his life to rescue his comrades. Wegener's death was blamed on a chain of unfortunate accidents, especially bad weather conditions. Using material that was hidden in the archives, this paper examines several additional aspects of the story, such as the influence of the Notgemeinschaft der Deutschen Wissenschaft (Emergency Society for German Science), which financed the expedition; the erroneous judgements of the expedition leader as well as some expedition members; and the lack of radio transmission. The conclusion is that no single individual can be blamed for Wegener's death, despite the fact that one expedition member, Johannes Georgi, was made the scapegoat.

Locus of Control as a Personality and Situational Variable

1968 ◽  
Vol 27 (1) ◽  
pp. 135-141 ◽  
Author(s):  
Roy Mc Donald ◽  
Vincent J. Tempone ◽  
William L. Simmons
Keyword(s):  
Individual Differences ◽  
Locus Of Control ◽  
Experimental Manipulation ◽  
Experimental Task ◽  
Personality Variable ◽  
Skilled Performance ◽  
Situational Variable ◽  
Main Effect ◽  
The Relationship ◽  
Made In

Previous studies of the personality variable, locus of control (LC), have focused on the relationship between LC and chance versus skilled performance. This study examined the interaction between LC and an experimental task which elicited in Ss differential levels of control as a subjectively felt state. The experimental task consisted in driving an automobile simulator in such a way that S felt he had maximum or little control over the number of errors he made in his driving performance on subsequent trials. S's performance on the simulator and his own evaluation of that performance were studied in relation to the amount of control experienced and individual differences in LC assessed by a forced-choice questionnaire. Although experimental manipulation of control had significant effects on performance, there was no significant interaction with this main effect and individual differences in LC.

Sign in / Sign up

Export Citation Format

Share Document