Mahmut Kayar, Suleyman Ilker Mistik and Deniz Inan
– The purpose of this paper is to investigate the factors effecting ultrasonic seam tensile properties.
Abstract
Purpose
The purpose of this paper is to investigate the factors effecting ultrasonic seam tensile properties.
Design/methodology/approach
In this study, 100 percent polypropylene and 100 percent polyester spunbond and meltblown nonwoven fabrics were sewn by using ultrasonic sewing machine with different rollers which have two, three and four rows. Seam tensile properties of the sewn nonwoven fabrics were investigated. Four-Level Nested Anova Design was applied to the data by using Minitab 15 software program.
Findings
Higher seam strength values were obtained by using four rows roller, PP fiber, spunbond fabric and 50 g/m2 fabric area density for all nonwoven fabrics. Statistical significance was found between fabric area density, roller rows and seam tensile strength properties and between fabric type, roller rows and seam elongation at break values.
Originality/value
When the authors look at the studies related to ultrasonic sewing, several researchers studied on welding parameters of ultrasonic sewing but very limited studies were performed on assembling of nonwoven fabrics with ultrasonic sewing. Therefore effect of production methods of nonwoven fabrics on the properties of ultrasonic sewing such as seam strength and elongation at break should be investigated.
Details
Keywords
Despite the quantity of collaborations, the vocational network of the housing production in Ankara during its first five years (1923–1928) remains dispersed. The aim of this study…
Abstract
Purpose
Despite the quantity of collaborations, the vocational network of the housing production in Ankara during its first five years (1923–1928) remains dispersed. The aim of this study is to identify all the actors of housing production and their collaborations which shaped Ankara's urban development as the new capital city.
Design/methodology/approach
The study engages with the literature and archival documents to identify the actors of the housing production, i.e. architects, master-builders, public institutions, private companies, contractors and entrepreneurs, and their resultant vocational network in the housing production in Ankara during 1923–1928.
Findings
Due to different agendas, such as speculation, financial interests or patriotism, the construction industry in Ankara had become an arena where many paths intersected, forming an intertwined vocational network. The profession of contractor became popular, and local architects, engineers and even individuals of various other professions began to work as mediators for foreign companies and public institutions, which required support especially in large-scale projects.
Originality/value
The dispersed information revealed that the actors of the housing production remained mostly anonymous, or only the famous architects were commemorated; however, others could be found within the lines of the established literature on Ankara and/or in archival documents. This research not only focuses on “salient” actors but also highlights the “silent” actors of the housing production and prepares charts to clarify the vocational network in Ankara during its first five years to contribute to the future studies on Ankara and its housing.
Details
Keywords
Today’s organizations try to keep their employees loyalty but employees may still feel unsatisfied and adopt negative attitudes. Cynicism, as a negative attitude of employees…
Abstract
Purpose
Today’s organizations try to keep their employees loyalty but employees may still feel unsatisfied and adopt negative attitudes. Cynicism, as a negative attitude of employees toward their organization, leads to unwanted outputs such as lower performance or lower loyalties that can appear in every kind of sector. Accordingly, the purpose of this paper is to determine the effects of personality traits on organizational cynicism in the education sector.
Design/methodology/approach
This study used the survey method to collect data and survey forms were distributed to teachers from various private schools in Istanbul, Turkey. With the e-mail survey method, the authors received 254 healthy survey forms from teachers. For personality traits, the five-factor model of personality traits that was developed by McCrae and Costa (1987) was preferred and the organizational cynicism model was evaluated with three basic dimensions as based on Brandes’s (1997) model.
Findings
Based on data from 254 teachers of various private schools in Istanbul, interrelationships amongst personality traits and organizational cynicism were tested. On the basis of the partial least-squares method, the authors found that agreeableness had a negative effect on cognitive cynicism and affective cynicism, conscientiousness had a negative effect on cognitive cynicism and affective cynicism, neuroticism had a negative effect on cognitive cynicism and behavior cynicism, and openness to experience had a positive effect on cognitive cynicism and affective cynicism. Thus, it can be said that personality traits of teachers had a significant effect on organizational cynicism as a result of this study.
Research limitations/implications
This study used two main scales: the scale of McCrae and Costa (1987) for personality traits and the scale of Brandes (1997) for organizational cynicism. The authors adapted both the scales for Turkish culture and the education sector that the results can be considered valid for only this study.
Originality/value
This study shows a significant effect of personality traits on cynicism in the education sector and thus can be considered to be useful for future studies.
Details
Keywords
Mustafa Dallı and Asena Soyluk
The aim of this study is to question the relationship between architectural ethical codes and faults in earthquakes. Earthquakes have devastating effects on all societies in…
Abstract
Purpose
The aim of this study is to question the relationship between architectural ethical codes and faults in earthquakes. Earthquakes have devastating effects on all societies in history and today. And the relationship and importance of the architect and building, one of the most important roles of these destructive effects, is once again revealed in every earthquake. Although there are some restrictions or warnings for architects and the architectural profession to reduce this destructive effect in many regulations and ethical codes, it is possible to see the defects caused by architectural design and the destruction caused by these defects in every new earthquake.
Design/methodology/approach
In this study, the most destructive earthquakes in Turkey in the past 20 years (Bingöl, Van, Elazig and Izmir) and the 1999 Marmara earthquake, which was the most destructive earthquake in Turkey’s recent history, and the damages occurred in these earthquakes and their causes were examined. Although the scope of the study is “destructive earthquakes that have occurred in the past 20 years in Turkey”, the Marmara Earthquake, which occurred in 1999, when the destructive effect of the earthquake was seen the most and architectural design errors were intense, was also included in the scope of the study. And to have a more comprehensive understanding of how these defects are examined in terms of ethical codes and to make a more comprehensive comparison, ethical codes from different countries in the world have been researched and a review has been made on topics such as public welfare, human rights and raising the standard of the profession.
Findings
This study concludes by reviewing the key factors learned from the examined ethical codes of different countries. Finding ethical codes of different countries was challenging to gain approval. In addition, the study ends with recommendations in terms of questioning the regulations and education curriculum relations on a country basis.
Originality/value
This study, which targets architect candidates who carry out the profession of architecture and continue their architectural education, evaluates the architectural design flaws seen in earthquakes through ethical codes and forms a basis for further studies.