Sultan Ucuk and Gulay Yildirim
The aim of this study was to determine the effect of coronavirus disease 2019 (COVID-19) prevention methods training given by distance learning technique on the state anxiety…
Abstract
Purpose
The aim of this study was to determine the effect of coronavirus disease 2019 (COVID-19) prevention methods training given by distance learning technique on the state anxiety level of the workers of a company serving in the communication sector.
Design/methodology/approach
The sample of this experimental and cross-sectional study consisted of 52 people working in the communication sector. Data were collected using a questionnaire and the state anxiety inventory. Data were analyzed using descriptive statistics, t-test, variance analysis, Kruskal–Wallis, Mann–Whitney U and Tukey’s test.
Findings
While the state anxiety scores of the workers working in the communication sector were 47.94 ± 4.90 before the training, they were found to be 43.98 ± 5.20 after the training.
Research limitations/implications
As in every study, this study has some limitations. Although a homogeneous sample is tried to be formed since it only covers this group, it should be considered that there is a limitation in terms of generalizability. In addition, the fact that the knowledge score is not measured and the relationship between the knowledge score and the anxiety score is not evaluated should be considered as a limitation. Finally, it is also a limitation that the questionnaire form, which includes measurement tools, is applied online. It is thought that measuring errors can be minimized if questionnaires are applied face to face.
Practical implications
The results of the study showed that the training given to the workers in the communication sector contributed positively to the reduction of anxiety levels. It is important to provide training and support to those with high anxiety levels. After providing effective protection for nurses/midwives under pandemic conditions and preventing their uncertainties, they can contribute to the reduction of anxiety levels by providing training to individuals who serve the society. It is recommended to plan health trainings for the anxiety of other sector workers serving the society and to focus on these groups. Thus, the effective protection of individuals and their service quality will increase and their anxiety may decrease.
Originality/value
Informative support from nurses/midwives can make it easier to control anxiety arising from the COVID-19 pandemic. The results are important in order to draw attention to the anxiety of other sector workers serving the society and the importance of informative roles of nurses. In order to reduce the anxiety levels of workers in different sectors, it is recommended to conduct more supportive training activities and to draw attention to the workers serving the society.
Ugur Kilic and Gulay Unal
The purpose of this study is to detect and reconstruct a fault in pitot probe and static ports, which are components of the air data system in commercial aircrafts, without false…
Abstract
Purpose
The purpose of this study is to detect and reconstruct a fault in pitot probe and static ports, which are components of the air data system in commercial aircrafts, without false alarm and no need for pitot-static measurements. In this way, flight crew will be prevented from flying according to incorrect data and aircraft accidents that may occur will be prevented.
Design/methodology/approach
Real flight data collected from a local airline was used to design the relevant system. Correlation analysis was performed to select the data related to the airspeed and altitude. Fault detection and reconstruction were carried out by using adaptive neural fuzzy inference system and artificial neural networks, which are machine learning methods. MATLAB software was used for all the calculations.
Findings
No false alarm was detected when the fault test following the fault modeling was carried out at 0–2 s range by filtering the residual signal. When the fault was detected, fault reconstruction process was initiated so that system output could be achieved according to estimated sensor data.
Practical implications
The presented alternative analytical redundant airspeed and altitude calculation scheme could be used when the pitot-static system contains any fault condition.
Originality/value
Instead of using the methods based on hardware redundancy, the authors designed a new system within the scope of this study. Fault situations that may occur in pitot probes and static ports are modeled and different fault scenarios that can be encountered in all flight phases have been examined.
Details
Keywords
Tuna Uysaler, Pelin Altay and Gülay Özcan
Laser fading, commonly used in the denim industry, is a computer-controlled, dry, ecological finishing method whereas conventional methods include high water, energy and time…
Abstract
Purpose
Laser fading, commonly used in the denim industry, is a computer-controlled, dry, ecological finishing method whereas conventional methods include high water, energy and time consumption. Resolution and pixel time are crucial parameters of laser source influencing the effect of laser treatment. The purpose of this study is to determine the optimum laser parameters of CO2 laser followed by enzyme washing and to compare the tensile strength and color values of laser-treated denim fabric with that of conventional enzyme-faded.
Design/methodology/approach
Two different indigo-dyed, sulfur bottom-indigo-dyed and only indigo-dyed organic cotton denim fabrics with different unit weights, were lasetreated with different laser parameters and then subjected to 10 min enzyme washing. Tensile strength, abrasion resistance, and change in fabric unit weight were tested. CIE (L*a*b*, ΔE*, h°, C*) color values, color strength (K/S), yellowness and whiteness indexes were measured to identify the color differences. Color fastness tests including washing, rubbing, light, water and perspiration fastness were investigated.
Findings
Most effective laser fading in terms of good mechanical properties and color values was obtained at 40 dpi resolution and 300 µs pixel time.
Originality/value
Conventional enzyme fading of denim fabrics is a wet process and requires a long process time of 40–45 min and high temperatures, leading to high energy and water consumption. Laser fading, on the other hand, is a dry and ecological method, but causes a decrease in mechanical properties of the fabric, and an increase in yellowness. In this study, unlike the similar studies in the literature, denim fading was carried out by a combination of laser treatment followed by only 10 min enzyme washing in order to eliminate or minimize the drawbacks of the denim fading, such as high energy and water consumption for enzyme fading and decrease in mechanical properties of the fabric and increase in yellowness for laser fading. This method was applied to two different dyed denim fabrics, sulfur (bottom) and indigo (top) and laser process conditions were optimized to achieve the desired fading effects compared to conventional enzyme fading.
Details
Keywords
Tuna Uysaler, Pelin Altay and Gülay Özcan
In the denim industry, enzyme washing and its combination with stone washing are generally used to get the desired worn-out look. However, these conventional methods include high…
Abstract
Purpose
In the denim industry, enzyme washing and its combination with stone washing are generally used to get the desired worn-out look. However, these conventional methods include high water, energy and time consumption. Nowadays, laser fading, which is a computer-controlled, dry, ecological finishing method, is preferred in the denim fading process. The purpose of this study is to observe the effects of chemical pretreatment applications on laser-faded denim fabric in terms of color and mechanical properties. To eliminate the enzyme washing process in denim fading and to minimize the disadvantages of laser fading, such as decreased mechanical properties and increased fabric yellowness, various chemical pretreatment applications were applied to the denim fabric before laser fading, followed by simple rinsing instead of enzyme washing.
Design/methodology/approach
Two different indigo-dyed, organic cotton denim fabrics with different unit weights were exposed to pretreatment processes and then laser treatment, followed by simple rinsing. Polysilicic acid, boric acid, borax and bicarbonate were used for pretreatment processes, and laser treatment was carried out under optimized laser parameters (40 dpi resolution and 300 µs pixel time). Tensile strength was tested, and color values (CIE L*, a*, b*, ΔE*, C* and h), color yield (K/S), yellowness and whiteness indexes were measured to identify the color differences.
Findings
Before laser fading, 30 g/L and 40 g/L polysilicic acid pretreatments for sulfur-indigo-dyed fabric and a mixture of 10 g/L boric acid and 10 g/L borax pretreatments for the fabric only indigo-dyed were recommended for the laser fading with sufficient mechanical properties and good color values.
Originality/value
With the chemical pretreatments defined in this study, it was possible to reduce yellowness and maintain the mechanical properties after laser fading, thus minimizing the disadvantages of laser treatment and also eliminating enzyme washing.
Details
Keywords
Durmus Çagri Yildirim, Seyfettin Erdogan, Seda Yildirim and Hamit Can
The purpose of this study is to investigate the effect of the Trans-Anatolian Natural Gas Pipeline Project (TANAP) on industrial production in Turkey. The TANAP is a project which…
Abstract
Purpose
The purpose of this study is to investigate the effect of the Trans-Anatolian Natural Gas Pipeline Project (TANAP) on industrial production in Turkey. The TANAP is a project which ensures the security of the country’s natural gas supply and encourages a decrease in energy prices. So, this study investigates TANAP’s efforts to decrease gas prices, as well as the effects of gas prices on industrial production.
Design/methodology/approach
The data include gas prices and industrial production index series. Gas prices are approached for industrial users (nonresidential) in Turkey and industrial production index series have been discussed for whole industries. The Johansen cointegration method has been used to analyze the data, spanning the period from 2005M01 to 2015M11.
Findings
Results indicate that the decrease in the energy prices has a positive effect on the industrial production index, which is accepted as a basic sign of economic growth. Accordingly, it has been proved that gas priced had a significant effect on industrial production in Turkish economy during the respective periods.
Research limitations/implications
This study has supported the argument that TANAP helps to decrease gas prices in Turkey. It can be said that a decrease in gas price is expected to have positive effect on industrial production in the long-term.
Originality/value
The present study shows that projects such as TANAP can help gas importing countries like Turkey to decrease gas prices and increase industrial production. In this context, this study supports projects that decreasing gas prices for energy importing countries in the long term.