scholarly journals Dependence of Dowel Joint Strength on Welding Temperature in Rotary Welding

2021 ◽  
Vol 72 (2) ◽  
pp. 169-178
Author(s):  
Ivica Župčić ◽  
Ivan Žulj ◽  
Ivica Grbac ◽  
Kristijan Radmanović
Keyword(s):  
Joint Strength ◽  
Rotation Frequency ◽  
Precise Determination ◽  
Future Research ◽  
Transfer Model ◽  
Weld Penetration ◽  
Welding Temperature ◽  
Dowel Joint ◽  
The Impact

The system for measuring the welding temperature with measuring probes has been developed for the requirements of this but also of future research (at the Faculty of Forestry and Wood Technology, University of Zagreb). The research is based on determining the welding temperature and its impact on the joint strength or the embedded force of the dowel. Based on research results, the impact of the dowel rotation frequency and temperature on the joint strength has been determined. The measured welding temperature increased as the rotation frequency increased (the rotation frequencies of 865 min-1 and 1520 min-1 were used in the research). The maximum welding temperature in pine samples welded at the rotation frequency of 1520 min-1 amounts to 217 °C, while in samples welded at the rotation frequency of 865 min-1 it amounts to 179 °C (weld penetration of 20 mm). The maximum welding temperature in beech samples welded at the rotation frequency of 865 min-1 amounts to 181 °C, and 213 °C at the rotation frequency of 1520 min-1 (weld penetration of 20 mm). The impact of the wood type on the welding temperature has not been proven. In order to avoid difficulties encountered in contact measurement of the welding temperature, a heat transfer model was developed for a more precise determination of the welding temperature.

Innovations in human resources management: impact on economic growth

2021 ◽  
Vol 5 (3) ◽  
pp. 53-65
Author(s):  
Monika Danova ◽  
Ivana Kravcakova Vozarova ◽  
Elena Sira
Keyword(s):  
Economic Growth ◽  
Human Capital ◽  
Economic Performance ◽  
Human Resources Management ◽  
Precise Determination ◽  
P Value ◽  
Strong Impact ◽  
Literary Sources ◽  
The Impact

In recent years, human capital has become increasingly emphasized as a factor of economic growth. Managing human capital could stimulate the whole economy to better performance in competitiveness. Although these indicators include several variables, there is no precise determination of which indicator mostly affects the country's economic growth. This paper summarizes the knowledge and approaches of several authors in the field of economic growth, knowledge economy, competitiveness, innovations and individual elements affecting these areas. It outlines the findings and provides some insight into the impact of individual factors on economic growth across recent studies. The main goal is to obtain information about the impact of education, its support, and its influence on economic performance on the example of empirical data documenting the qualitative parameters of the workforce. The use of selected indicators indicated their impact on the change in economic performance. The partial objective is to identify an indicator or set of indicators that could express the impact of human capital on economic growth. The study involved research methods such as analyzes, statistical methods such as correlation and p-value, and prediction for the next period based on past developments. The research object is the V4 countries – the Czech Republic, Slovakia, Hungary, and Poland. The findings pointed to the strong impact of the analyzed factors on economic growth. Besides, they showed which of the known ways to increase the efficiency of the labor factor were actually or little used in the sample countries. Undoubtedly, there is also an indicative and interesting comparison within a group or with other economies at a comparable economic and social development level. Finally, improvements to the current situation were proposed. The systematization of literary sources and approaches to economic growth helps identify possible proposals for improving competitiveness in the future, using innovative approaches.

Police crackdowns in Mexico City

2019 ◽  
Vol 42 (5) ◽  
pp. 798-813
Author(s):  
Ricardo Massa ◽  
Gustavo Fondevila
Keyword(s):  
Mexico City ◽  
Precise Determination ◽  
Crime Rates ◽  
Garch Models ◽  
Content Type ◽  
Sustained Reduction ◽  
Police Crackdown ◽  
The Impact ◽  
Static Nature

Purpose The purpose of this paper is to analyze the design and implementation of the police crackdown strategy employed in Mexico City and to discuss its limitations toward a medium-to-long-term reduction of crime rates for six types of robberies. Design/methodology/approach The present work employs generalized autoregressive conditional heteroscedasticity (GARCH) models to estimate the effect of police operations on the volatility of the rates of six types of robberies in Mexico City, as well as their persistence over time. Findings Results suggest that the concentration of policing in certain high-criminality spaces reduces crime rates in the immediate term; however, its permanence is contingent on policing design and behavioral characteristics of the targeted crime. Specifically, the Mexico City police crackdown strategy seems to be better suited for combating crimes of a “non-static” nature than those of a “static” nature. Research limitations/implications Due to the nature of the data used for this research, the performed analysis does not enable a precise determination of whether the crime rates respond to temporal or spatial displacement. Practical implications Considering the obtained results, a re-design of Mexico City’s police crackdown strategy is suggested for the sustained reduction of the number of reported cases of robberies of a static nature. Originality/value Despite their importance, few studies have measured the impact of police crackdowns on city-level crime rates and whether their effect is temporary or permanent. The present study proposes the use of GARCH models in order to integrate the study of this phenomenon into criminal time series models.

The Role of Gender and Gender Dynamics in Same-Sex Divorce and Dissolution

2018 ◽  
pp. 353-382
Author(s):  
Suzanne A. Kim ◽  
Edward Stein
Keyword(s):  
Future Research ◽  
Relationship Dissolution ◽  
Legal Institution ◽  
Same Sex ◽  
Gender Dynamics ◽  
Same Sex Couples ◽  
And Gender ◽  
The Impact

This chapter identifies ways researchers, policymakers, therapists, lawyers, and couples should attend to the role of gender and gender dynamics facing same-sex couples upon divorce or relationship dissolution. When same-sex couples marry, gender roles associated with a particular vision of different-sex couples—in reference to which the legal institution of marriage developed historically—may be projected onto same-sex couples both socially and by judges adjudicating their relationship dissolutions, often in a manner conflicting with couples’ intentions and practices. Thus, couples consisting of two men and couples consisting of two women may be differentially affected. Gender and gender dynamics are likely to affect the bases for dissolution (e.g., whether one of the spouses committed adultery or whether there is a basis for annulment); the financial aspects of dissolution; and determination of child custody. The chapter suggests directions for future research regarding the impact of gender on the dissolution of same-sex relationships.

scholarly journals The perceived impact of COVID-19 pandemic on healthcare cost in Bangladesh

2021 ◽  
Vol 6 (2) ◽  
pp. 172-185
Author(s):  
Hasibul Islam ◽  
Fatema Johora ◽  
Asma Abbasy ◽  
Masud Rana ◽  
Niyungeko Antoine
Keyword(s):  
Regression Analysis ◽  
Future Research ◽  
Protective Equipment ◽  
Healthcare Facilities ◽  
Independent Variables ◽  
Goods And Services ◽  
R Programming ◽  
Healthcare Expenses ◽  
The Impact

The study showed the effect of the COVID-19 pandemic on healthcare expenses including the price of medicines, protective equipment, medical devices, healthcare facilities, and food. A self-administered questionnaire was used as the data collection tool and 400 people from different Bangladesh divisions (Dhaka, Chittagong, Barisal, Khulna, Mymensingh, Rajshahi, and Sylhet) participated in this study. Multiple regression analysis was used to estimate the impact of independent variables on dependent variables. R programming environment was used to perform the statistical analysis. Cronbach’s alpha was used for determination of reliability and found acceptable internal consistency. The price of protective equipment (POPE), the price of a healthcare facilities (POHCF), the consequences of rising prices (CRP), and COVID-19 were independent variables. COVID-19 (CRP) was a dependent variable that measured COVID-19’s impact (IC). The results of the regression analysis indicated a positive and significant impact of POPE, POHCF, and CRP on IC. However, the variance explained was still low (54.4%). Bangladesh should control the prices of all goods and services because of their influence on the impact of COVID-19. Future research should be conducted to discover other variables that affect the impact of COVID-19.

scholarly journals Determination of FODMAP contents of common wheat and rye breads and the effects of processing on the final contents

2020 ◽  
Author(s):  
Marcus Schmidt ◽  
Elisabeth Sciurba
Keyword(s):  
Wheat Flour ◽  
High Performance ◽  
Anion Exchange Chromatography ◽  
Processing Parameters ◽  
Exchange Chromatography ◽  
Future Research ◽  
Processing Parameter ◽  
Irritable Bowel ◽  
The Impact

Abstract The benefits of a diet, low in fermentable oligo-, di- and monosaccharides and polyols (FODMAP) for patients suffering from irritable bowel syndrome (IBS) has been well established. Thus, the exact knowledge of the amount and composition of FODMAPs in foods is of vital importance for these patients. This study investigated the possibilities of FODMAP reduction by adjusting the processing parameters, which are feasible in practise, while still producing marketable breads. Therefore, the impact of prolonged proofing and the addition of sourdough on the FODMAPs in the final products was evaluated. High performance anion exchange chromatography was used for qualitative and quantitative analysis. A prolonged proofing time resulted in reduction of the fructan content and in consequence of the total FODMAPs. In contrast, the addition of sourdough only altered the FODMAP composition, by reducing the fructan content but increasing the mannitol content. While all the breads produced from refined wheat flour meet the low-FODMAP criteria, the breads from rye and whole meal wheat flour have to be considered as high-FODMAP, regardless of the processing conditions investigated. Breads produced from rye flour exceeded the limits for fructans and mannitol, while whole meal wheat breads were found to exceed the threshold for excess fructose. Overall, the production of low-FODMAP rye breads was identified as the biggest challenge for future research, since it could not be achieved using conventional processing parameter.

scholarly journals Addressing the Challenge of Guiding Our Students on how to Deal with Fake News

10.28945/4341 ◽  
2019 ◽  
Keyword(s):  
Communication Theory ◽  
Influential Factors ◽  
Future Research ◽  
Fake News ◽  
Methodology Development ◽  
Qualitative And Quantitative ◽  
Gender Culture ◽  
The Face ◽  
The Impact

Aim/Purpose: In the face of the onslaught of fake news, we aim to address the challenge of how we, as academics, can guide our students to be able to critically assess and evaluate information. Background Fake news has assumed alarming proportions and is a challenge to academia, organizations, causes and governments. How can our students be prepared to deal with this challenge? Methodology: Development of guidelines based on a literature review of multiple literatures. Contribution A set of guidelines is presented, which can be used by academics and students in their determination of which is valid and truthful information and which is fake. Findings: A set of guidelines in which the core aspects of information and fake news communication as discussed. They are: fake news; social media; and the receiver’s motivation; expectations; attitudes, biases, predispositions and brand loyalty; media engagement; and reference groups. Recommendations for Practitioners: The guidelines will help students deal with the phenomenon of fake news. Recommendations for Researchers: This research shows how communication theory can be used to address fake news. It also demonstrates a multi-disciplinary approach. Impact on Society: Greater caution and discernment regarding information will be instilled into the minds of our students as future leaders of our economies and society. Future Research: Qualitative and quantitative expansion and testing of the validity of the find-ings; further testing of the impact of age, gender, culture and discipline studied on the influential factors proposed.

Exploring the Perceptions of Self-Determination of Individuals With Intellectual Disability

2011 ◽  
Vol 49 (2) ◽  
pp. 86-102 ◽  
Author(s):  
Karrie A Shogren ◽  
Ricky Broussard
Keyword(s):  
Intellectual Disability ◽  
Personal Development ◽  
Systems Change ◽  
Self Determination ◽  
Future Research ◽  
Environmental Characteristics ◽  
Research And Practice ◽  
The Future ◽  
The Impact

Abstract Interviews were conducted with 17 individuals who had intellectual disability to expand our understanding of the impact of self-determination in their life. Themes emerging from the interviews were grouped into three categories: meaning of self-determination, learning about self-determination, and dreams for the future. Participants described self-determination as being able to make choices and be in control of one's life and setting as well as being able to work toward goals and engage in advocacy. Participants discussed the importance of supports for expressing self-determination and identified environmental characteristics that promoted and inhibited self-determination. Overall, their perceptions confirm the importance of promoting personal development of skills and attitudes associated with self-determination and systems change to create environmental opportunities for self-determination and causal agency. Implications for future research and practice are discussed.

scholarly journals Determination of aerosol properties from satellite observations of the Ring effect

2010 ◽  
Vol 3 (4) ◽  
pp. 3535-3599 ◽  
Author(s):  
T. Wagner ◽  
S. Beirle ◽  
T. Deutschmann ◽  
M. P. de Vries
Keyword(s):  
Radiative Transfer ◽  
Optical Depth ◽  
Satellite Observations ◽  
Transfer Model ◽  
Layer Height ◽  
Polarisation Sensitivity ◽  
The Impact ◽  
Aerosol Properties ◽  
Ring Effect

Abstract. In this study we explore the potential of satellite observations of the Ring effect (at various wavelengths) for the retrieval of atmospheric aerosol properties. Compared to clouds, aerosols have a rather weak influence on the Ring effect, thus the requirements on the accuracy of the measurements and the radiative transfer simulations are high. In this study, we show that for moderate and high aerosol optical depth (AOD), Ring effect observations are sensitive enough to yield information not only on the AOD, but also on the absorbing properties of aerosols and the aerosol layer height. The latter two quantities are especially important for the determination of the radiative effects of aerosols. Our investigations are based on observations by the satellite instrument SCIAMACHY on ENVISAT (2004–2008) and on model simulations using the Monte-Carlo radiative transfer model McArtim. In addition to the Ring effect we investigate the impact of aerosols on the absorptions of the oxygen molecule (O2) and dimer (O4) as well as the radiance. In general good consistency between measured and simulated quantities is found. In some cases also systematic differences occurred, which are probably mainly related to the strong polarisation sensitivity of the SCIAMACHY instrument. Our study indicates that Ring effect observations have important advantages for aerosol retrievals: in contrast to O2 and O4 absorptions they are only weakly affected by the surface albedo; they can be analysed with high accuracy in various wavelength ranges; and depending on the wavelength range, they show different sensitivities on aerosol properties like single scattering albedo, optical depth or layer height. The results of this study are of particular interest for future satellite instruments with reduced polarisation sensitivity and smaller ground pixels, capable of measuring the Ring effect with higher accuracy.

Self-Compassion and Quality of Life in Adults Who Stutter

2020 ◽  
Vol 29 (4) ◽  
pp. 2097-2108
Author(s):  
Robyn L. Croft ◽  
Courtney T. Byrd
Keyword(s):  
Quality Of Life ◽  
Social Connectedness ◽  
The Self ◽  
Future Research ◽  
Self Compassion ◽  
Adults Who Stutter ◽  
And Gender ◽  
Relationship Of ◽  
The Impact

Purpose The purpose of this study was to identify levels of self-compassion in adults who do and do not stutter and to determine whether self-compassion predicts the impact of stuttering on quality of life in adults who stutter. Method Participants included 140 adults who do and do not stutter matched for age and gender. All participants completed the Self-Compassion Scale. Adults who stutter also completed the Overall Assessment of the Speaker's Experience of Stuttering. Data were analyzed for self-compassion differences between and within adults who do and do not stutter and to predict self-compassion on quality of life in adults who stutter. Results Adults who do and do not stutter exhibited no significant differences in total self-compassion, regardless of participant gender. A simple linear regression of the total self-compassion score and total Overall Assessment of the Speaker's Experience of Stuttering score showed a significant, negative linear relationship of self-compassion predicting the impact of stuttering on quality of life. Conclusions Data suggest that higher levels of self-kindness, mindfulness, and social connectedness (i.e., self-compassion) are related to reduced negative reactions to stuttering, an increased participation in daily communication situations, and an improved overall quality of life. Future research should replicate current findings and identify moderators of the self-compassion–quality of life relationship.

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