How Subject and Experimenter Variables Influence Estimates of Hearing Protector Attenuation Using Ansi-Standardized Testing Procedures

Author(s):  
Mark G. Mears ◽  
John G. Casali ◽  
John R. Franks

Hearing threshold levels (HTLs) were determined using audiometrically-normal subjects with and without earplugs for two hearing protection device (HPD) laboratory fitting protocols. The experimenter-fit (EF) protocol intended to estimate the optimum attenuation of an HPD. EF involved a high level of experimenter participation and a low level of subject participation—the experimenter optimally fit earplugs to the subject. The subject-fit (SF) protocol, on the other hand, intended to estimate the more typical attenuation achievable in the real-world by well-run hearing conservation programs (HCPs), therefore, inexperienced-in-HPD-use subjects fit one of two types of earplugs on themselves using only the manufacturer's on-package instructions and without experimenter assistance. The objective was to compare the attenuation performance of the two HPD fitting protocols which varied in subject and experimenter testing participation and involvement. As expected, significantly greater attenuation resulted under EF than SF. Comparisons of the SF data to real-world studies demonstrated that SF slightly overestimated real-world attenuation, but not by nearly as much as EF. Therefore, SF better estimated the level of noise protection likely to be afforded to actual HPD users. The factors of subject gender and number of trial repetitions per subject were studied as well but did not significantly affect HPD attenuation. The results supported the work currently underway by ANSI Working Group S12/WG11 to develop a new ANSI standard to be used for obtaining attenuation data for labeling purposes which recommends the SF procedure.

1997 ◽  
Vol 21 (3) ◽  
pp. 168-174 ◽  
Author(s):  
A. Cortés ◽  
E. Viosca ◽  
J. V. Hoyos ◽  
J. Prat ◽  
J. Sánchez-Lacuesta

The great diversity of prosthetic mechanisms available nowadays leads to the question of which type of artificial foot would be the most advisable for a particular person. To answer correctly, it is necessary to establish, in an objective way, the performance of each type of prosthetic mechanism. This knowledge is obtained by means of the study of the subject-prosthesis interaction, both in static and dynamic conditions. This paper, based on the analysis of 8 transtibial (TT) amputees, presents a quantitative method for the study of human gait which allows the determination of the influence of four different prosthetic ankle-foot mechanisms (SACH, Single-axis, Greissinger and Dynamic) on gait. To do this, 1341 gait trials at different cadences were analysed (383 with normal subjects and 958 with amputees, using the four prosthetic feet under study). From all the variables available for study only those which offered interpretable clinical information were chosen for analysis. A total of 18 variables (kinetic, kinematic and time-related) were selected. A covariance analysis (ANOVA) of these variables was made, which showed that the factors influencing TT amputee gait were, in order of importance, cadence and leg studied (sound or prosthetic), inter-individual variability and, finally, the prosthetic mechanism used. When looking at the performance during gait of the 4 prosthetic mechanisms studied it can be observed that there are similarities in the kinetic study between SACH and Dynamic feet on one hand and Single-axis and Greissinger feet on the other. These results seem to support the classification criteria of articulated and non-articulated prosthetic mechanisms.


Author(s):  
Gayane Poghosyan

Nowadays it is a necessity to include the competence to the target component of education content.An individual and socially significant activity of real-world objects should be interconnected with the other target components of content and based on experience as a social requirement/Khutorskoy A.V, 2013. Civic competence is represented as: the unity of civil competence of the subject (Zimnyaya I.A.,2006), the unity of readiness and abilities, which allows the active, effective and responsible control of the rights and duties of a member of a democratic society, applying the knowledge and skills and civic qualities.The issue of development of civil competence was always faced teachers almost in all countries and was considered only as a pedagogical activity, and not as the educational problem.For the formation of civic competence, it is necessary first of all to form the abilities of both students and teachers who can make decisions in different living conditions - in different training situations (self-education) they can make decisions, identify problems and give solutions, as well as purposeful and responsible actions, at the same time developing creative and critical thinking.


Author(s):  
Nadiia Kichenok

The article is devoted to the problems connected with the physiology of tennis players' movements. The main aim of the article was to determine the key factors which directly influence on movements and actions of tennis players during training process and participation in professional tournaments. Methods of the research: the analysis of scientific and methodical sources and observations. Object of the research: the educational and training process of tennis players aimed at improvement of movements. Results. The human strength is the ability to overcome the external resistance or to resist it due to the power of muscles. Each of the factors studied plays an important role in the training of athletes. The physiology of movement of tennis players consists of many components such as strength, agility, speed, ability to maintain balance, accuracy of movement in space, flexibility and endurance. Each of the mentioned elements plays not a small role and requires a special training. The urgency of the subject of the analysis of physiology of tennis players' movements consists in the increase of popularity of this kind of sport on the territory of Ukraine. As of 2021, more than 50 representatives of the country are included in the WTA and ATP ratings. It directly indicates a high level of preparation of domestic sportsmen. Conclusions. The physiology of a tennis player's movement consists of many factors (strength, agility, speed, ability to keep balance, accuracy of movement in space, flexibility and endurance), each of which plays an important role to reach the goals. Most of them are related to each other and create certain combinations. However, having one property does not guarantee the other, creates obstacles. However, they can be solved through constant training. Studying in detail the physiology of an athlete's movement is necessary in order to understand what characteristics may arise. More detailed researches, connected with physiology of movements, will help to correct correctly the preparatory process in future not only for the future professionals, but also for the present representatives of the Ukrainian national tennis team.


Author(s):  
Giulio Caldarelli

With the advent of smart contracts, the benefits of decentralization offered by distributed ledger technologies could be implemented in sectors other than cryptocurrencies, such as Healthcare, Supply Chain, and Finance. Smart contracts, however, need oracles to fetch data from the real world, which, on the other hand, do not offer the same characteristics of decentralization as blockchain. Despite their importance, research on oracles is still in its infancy, and academic contribution on the subject is scarce and sporadic. With a bibliometric analysis, this study aims to shed light on the institutions and authors that are actively contributing to the oracle literature with the aim of promoting progress and cooperation. The study shows that although there is still a lack of collaboration worldwide, there are authors and institutions working in similar directions. On the other hand, it can be observed that most of the areas of research are poorly addressed while others are even uncovered.


LOGOS ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 1-34
Author(s):  
Leo Agung Srie Gunawan

The true religious feeling is rooted in adoration. The taste of adoration is derived from the experience of God which indeed shake one’s soul. On one side, the experience of God leads to the recognition of God as the Great Creator of the universe. In this case, God is experienced as the everything. On the other side, it causes that human being encounters the self-recognition as a helpless creature. One feels as a nothingness of creature here. The feeling of adoration, therefore, has a religious structure in human soul that has a direction to God. As the structure of soul, the adoration is likely to be subjective which means that the subject experiences God (the world of ideas) and at the same time, it is objective that God is experienced by the subject (the real world). The object of the experience of adoration is, particularly, transcendent. Finally, the sense of adoration is needed to revive the living of faith for the believers.


Author(s):  
S.R. Allegra

The respective roles of the ribo somes, endoplasmic reticulum, Golgi apparatus and perhaps nucleus in the synthesis and maturation of melanosomes is still the subject of some controversy. While the early melanosomes (premelanosomes) have been frequently demonstrated to originate as Golgi vesicles, it is undeniable that these structures can be formed in cells in which Golgi system is not found. This report was prompted by the findings in an essentially amelanotic human cellular blue nevus (melanocytoma) of two distinct lines of melanocytes one of which was devoid of any trace of Golgi apparatus while the other had normal complement of this organelle.


1983 ◽  
Vol 50 (02) ◽  
pp. 563-566 ◽  
Author(s):  
P Hellstern ◽  
K Schilz ◽  
G von Blohn ◽  
E Wenzel

SummaryAn assay for rapid factor XIII activity measurement has been developed based on the determination of the ammonium released during fibrin stabilization. Factor XIII was activated by thrombin and calcium. Ammonium was measured by an ammonium-sensitive electrode. It was demonstrated that the assay procedure yields accurate and precise results and that factor XIII-catalyzed fibrin stabilization can be measured kinetically. The amount of ammonium released during the first 90 min of fibrin stabilization was found to be 7.8 ± 0.5 moles per mole fibrinogen, which is in agreement with the findings of other authors. In 15 normal subjects and in 15 patients suffering from diseases with suspected factor XIII deficiency there was a satisfactory correlation between the results obtained by the “ammonium-release-method”, Bohn’s method, and the immunological assay (r1 = 0.65; r2= 0.70; p<0.01). In 3 of 5 patients with paraproteinemias the values of factor XIII activity determined by the ammonium-release method were markedly lower than those estimated by the other methods. It could be shown that inhibitor mechanisms were responsible for these discrepancies.


1970 ◽  
Vol 1 (2) ◽  
pp. 34-36
Author(s):  
Mehedi Imam

In Bangladesh, demand for judicial independence in practice has been a much debated issue and the demand is fulfilled but expectation of people is not only limited to have an independent judiciary but to have an impartial system and cadre of people, which will administer justice rationally being free from fear or force. The independence of judiciary and the impartial judicial practice are related concepts, one cannot sustain without the other and here existence as well as the need of practicing impartiality is well recognized. But the art of practicing impartiality does not develop overnight as it’s related to development of one’s attitude. It takes a considerable time resulting from understanding, appreciating and acknowledging the moral values, ethics and professional responsibility. The judiciary includes Judges, Advocates mostly who are expected to demonstrate a high level of moral values and impartiality towards people seeking justice and ‘rule of law’. This is true that bench officers and clerks are also part of the process to ensure rule of law with same level of participation by the law enforcing agencies such as police. However the paper includes only those who either join judiciary as Judge/Magistrate or Advocate to explore level and extent of ethical knowledge they receive being key role players of the system. DOI: http://dx.doi.org/10.3329/bioethics.v1i2.9628 Bangladesh Journal of Bioethics 2010; 1(2): 34-36


2018 ◽  
Vol 2 (5) ◽  
pp. 789
Author(s):  
Maria Yulianti

The background of this study was the low student learning outcomes of PPKn, from 28 students who achievedthe completeness criteria at least only 11 students (39.29%). The low student learning outcomes are caused bythe high level of individuality between students so that the achievement of competence among studentsexperiences a very distant difference. Based on this, the researchers made improvements to student learningoutcomes through the application of STAD cooperative learning models. This research is a classroom actionresearch, with the subject of class VII of SMP Negeri 3 Teluk Kuantan. The data used in this study is PPKnlearning outcomes data. The results stated that after applying the STAD type cooperative learning model studentlearning outcomes had increased in the initial data the number of students who completed were 11 students, incycle I had an increase with the number of 18 students, and in cycle II the number of students who completedcontinued to increase by the number 22 student.


1966 ◽  
Vol 53 (4) ◽  
pp. 673-680 ◽  
Author(s):  
Torsten Deckert ◽  
Kai R. Jorgensen

ABSTRACT The purpose of this study was to investigate whether a difference could be demonstrated between crystalline insulin extracted from normal human pancreas, and crystalline insulin extracted from bovine and porcine pancreas. Using Hales & Randle's (1963) immunoassay no immunological differences could be demonstrated between human and pig insulin. On the other hand, a significant difference was found, between pig and ox insulin. An attempt was also made to determine whether an immunological difference could be demonstrated between crystalline pig insulin and crystalline human insulin from non diabetic subjects on the one hand and endogenous, circulating insulin from normal subjects, obese subjects and diabetic subjects on the other. No such difference was found. From these experiments it is concluded that endogenous insulin in normal, obese and diabetic human sera is immunologically identical with human, crystalline insulin from non diabetic subjects and crystalline pig insulin.


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