Planck-Benzinger Thermal Work Function: Definition of Temperature-Invariant Enthalpy in Biological Systems

1994 ◽  
Vol 98 (27) ◽  
pp. 6851-6861 ◽  
Author(s):  
Paul W. Chun
Keyword(s):  
Work Function ◽  
Biological Systems ◽  
Thermal Work ◽  
Function Definition ◽  
Definition Of

scholarly journals Two definitions of presenteeism: sickness presenteeism and impaired work function

2020 ◽  
Vol 70 (2) ◽  
pp. 95-100 ◽  
Author(s):  
T Ishimaru ◽  
Y Mine ◽  
Y Fujino
Keyword(s):  
Work Function ◽  
Secondary Data ◽  
Strong Relationship ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Employee Survey ◽  
Sickness Presenteeism ◽  
Construction Company ◽  
Sleeping Problems ◽  
Definition Of

Abstract Background Two major definitions exist for presenteeism: sickness presenteeism and impaired work function. The evidence for comparing previous studies on presenteeism is insufficient because of the different definitions of presenteeism used. Aims To assess the relationship between the two major definitions of presenteeism. Methods This cross-sectional study analysed secondary data on 5334 respondents to an employee survey administered in a construction company in Japan. Impaired work function was measured using the Work Functioning Impairment Scale (WFun). Multiple logistic regression was performed. Results A strong linear association was observed between the number of days of sickness presenteeism and impaired work function (all P < 0.001). In contrast, the number of days of sickness absence was only partially positively associated with impaired work function. All choices for most frequent health problem were positively associated with impaired work function, beginning with mental problems (adjusted odds ratio [OR] = 20.45, 95% confidence interval [CI]: 14.94–28.01), followed by malaise (adjusted OR = 11.91, 95% CI: 9.08–15.62) and sleeping problems (adjusted OR = 8.62, 95% CI: 6.57–11.33). Conclusions A strong relationship was observed between the two major definitions of presenteeism, even after adjusting for a variety of chronic health conditions. Although a consensus on the definition of presenteeism is yet to be reached, this study provides insight on comparing existing studies on presenteeism.

scholarly journals Modelowanie układów sterowania z użyciem pochodnych ułamkowych

2020 ◽  
pp. 33-50
Author(s):  
Grzegorz Dec ◽  
Keyword(s):  
Experimental Data ◽  
System Theory ◽  
Control System ◽  
Fractional Order ◽  
Fractional Derivatives ◽  
System Control ◽  
Current State ◽  
Function Definition ◽  
Definition Of ◽  
State Of Art

In the paper is presented review of some approaches corelated with subject of using fractional derivatives in control system theory. Popular algorithms used in the industry are presented, along with relating designing methodology. Using of fractional derivatives calculations is relatively new concept, but constantly getting increasing interest. Deliberation in recent years indicate that many scientific problems like thermodynamic or biology problems can be well considered and modeled by fractional order derivatives. On the market there is available tools that support a processes of identification and regulators designing, based on experimental data. One of such tools are toolbox CRONE for MATLAB, which contains three modules: mathematical, identifying, system control designing. That toolbox allows implementation of CRONE regulators with different level of complexity. Other tool is FOMCON, which also is a toolbox for MATLAB and it is based on already existed toolbox FOTF. FOMCON allows to identifying of control system and PIλDµ regulator designing. This article is aiming to present current state of art, discussion about existing tools and concepts correlated with fractional order derivatives and their usage in control system theory, like: gamma function, definition of fractional derivative, Laplace transform and basics of control system theory.

Power Series.Orthogonal Operational Expansions

2020 ◽  
Author(s):  
Pablo Enrique Aballe Vazquez
Keyword(s):  
Hilbert Space ◽  
Taylor Series ◽  
Laplace Transforms ◽  
Unique Function ◽  
Differential Transformation ◽  
Improper Integral ◽  
Analytical Functions ◽  
Positive Semiaxis ◽  
Function Definition ◽  
Definition Of

Formulation of the classic Taylor series as an orthogonal concept based on identifying the expansions coefficients as differential transformation applied to a unique function; definition of operational orthogonality by analogy with the Hilbert space and identification of the nth derivative at a point based on the improper integral on the positive semiaxis ; deduction of inversion integrals for Laplace transforms for analytical functions

scholarly journals A Gauge model for analysis of biological systems

2015 ◽  
Author(s):  
Imadol V. Jeff-Eke
Keyword(s):  
Functional Response ◽  
Biological Systems ◽  
Biological Model ◽  
Gauge Model ◽  
Functional Responses ◽  
Failure State ◽  
Initial Work ◽  
Hypothetical Mechanism ◽  
Definition Of ◽  
Descriptive Framework

For this initial work, we shall focus on introducing a biological model for utilization mainly as a descriptive framework on which future analyses will be based. The model includes a definition of biological systems and introduces a concept of failure; in addition to a hypothetical mechanism by which failure occurs. We then define a functional response as a means of preventing attainment of failure state. We also define such functional responses as properties of the system, in addition to interactions between these systemic properties. We discuss determinants of the rate of- and measures of systemic failure. We conclude with two assumptions on the principal significance of systemic phenomena.

Reorienting business education through the lens of Ernest Boyer

2020 ◽  
Vol 35 (1) ◽  
pp. 45-59
Author(s):  
K. Doreen MacAulay ◽  
Mark J. Mellon ◽  
Walter R. Nord
Keyword(s):  
Higher Education ◽  
Business Education ◽  
Business Schools ◽  
Focal Point ◽  
American Business ◽  
Unified Framework ◽  
Current Form ◽  
Content Type ◽  
Function Definition ◽  
Definition Of

PurposeThis article assesses the ability of Boyer's (1990) four-function definition of scholarship to address critiques of business schools. Boyer's definition of scholarship is presented as the foundation for a paradigmatic shift in higher education in business.Design/methodology/approachThe authors developed this conceptual paper by considering information from three sources: 1) Ernest Boyer's Scholarship Reconsidered: Priorities of the Professoriate, 2) articles by four well-known pundits of business education as well as critiques appearing in the Academy of Management Learning and Education Journal and 3) articles in which Boyer's work was the focal point of the article found by searching Google Scholar, two well-known education journals, a prominent database of education articles and the International Handbook of Higher Education (Forest and Altbach, 2007).FindingsA four-function framework based on Boyer's definition of scholarship is proposed to help improve the operations of business schools. The authors also forward ideological and practical implications related to each of Boyer's four functions.Originality/valueFor several decades now, a number of highly respected business scholars have criticized American business education in its current form. These criticisms, although plentiful, have not fueled the magnitude of change needed to have a significant, sustainable impact on business education. The authors suggest that this lack of change is due, in part, to institutional practices and to the absence of a unified framework for how higher education in business should be executed. The authors argue that Boyer's four-function definition of scholarship could provide such a framework.

scholarly journals Parasitic Events in Envelope Analysis

10.14311/282 ◽  
2001 ◽  
Vol 41 (6) ◽  
Author(s):  
J. Doubek ◽  
M. Kreidl
Keyword(s):  
Fourier Series ◽  
Numerical Calculation ◽  
Fault Location ◽  
Spectral Lines ◽  
Convolution Integral ◽  
Envelope Analysis ◽  
Synthetic Signal ◽  
Function Definition ◽  
Definition Of

Envelope analysis allows fast fault location of individual gearboxes and parts of bearings by repetition frequency determination of the mechanical catch of an amplitude-modulated signal. Systematic faults arise when using envelope analysis on a signal with strong changes. The source of these events is the range of function definition of used in convolution integral definition. This integral is used for Hilbert image calculation of analyzed signal. Overshoots (almost similar to Gibbs events on a synthetic signal using the Fourier series) are result from these faults. Overshoots are caused by parasitic spectral lines in the frequency domain, which can produce faulty diagnostic analysis.This paper describes systematic arising during faults rising by signal numerical calculation using envelope analysis with Hilbert transform. It goes on to offer a mathematical analysis of these systematic faults.

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