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Forecasting of the Unemployment Rate in Turkey: Comparison of the Machine Learning Models
Get PDFUnemployment is the most important problem that countries need to solve in their economic development plans. The uncontrolled growth and unpredictability of unemployment are some of the biggest obstacles to economic development. Considering the benefits of technology to human life, the use of artificial intelligence is extremely important for a stable economic policy. This study aims to use machine learning methods to forecast unemployment rates in Turkey on a monthly basis. For this purpose, two different models are created. In the first model, monthly unemployment data obtained from TURKSTAT for the period between 2005 and 2023 are trained with Artificial Neural Networks (ANN) and Support Vector Machine (SVM) algorithms. The second model, which includes additional economic parameters such as inflation, exchange rate, and labor force data, is modeled with the XGBoost algorithm in addition to ANN and SVM models. The forecasting performance of both models is evaluated using various performance metrics such as Mean Absolute Error (MAE), Root Mean Square Error (RMSE), and Mean Absolute Percentage Error (MAPE). The findings of the study show how successful artificial intelligence methods are in forecasting economic developments and that these methods can be used in macroeconomic studies. They also highlight the effects of economic parameters such as exchange rates, inflation, and labor force on unemployment and reveal the potential of these methods to support economic decisions. As a result, this study shows that modeling and forecasting different parameter values during periods of economic uncertainty are possible with artificial intelligence technology
The significance of women’s cooperatives in promoting the sustainability of local gastronomic products: The case of Bor women’s agricultural development cooperative
Get PDFWomen’s cooperatives are organizations that support women in taking an active role in production and economic structure. Local products, on the other hand, are important tourist attraction elements that express the cultural structure specific to a destination. Women’s cooperatives make it possible to use local gastronomic products as sustainable and touristic attractions. It is important to include women in planning within the framework of tourism in order to provide economic returns by using the female workforce effectively and efficiently. In this regard, it is aimed at determining the awareness and views of the Bor women’s cooperative operating in the province of Niğde on the production and marketing of gastronomic products. Secondary data was used as the research method, and the survey technique, one of the quantitative research methods, was applied in the study. As a consequence of the research, it was concluded that the women working in the cooperative supported the production and marketing of local gastronomic products within the context of tourism, and some recommendations have been presented accordingly. © 2024 by author(s). Environment and Social Psychology is published by Asia Pacific Academy of Science Pte. Ltd
The effectiveness of an individual and family self-management theory-based education program given for adolescents with epilepsy and parents: Randomized controlled trial
Get PDFBackground: This study focused on an online education program based on Individual and Family Self-Management Theory. Purpose: The study investigated whether the education program affected adolescents' attitudes toward epilepsy, seizure self-efficacy, quality of life, and their parents' perceived nurse-support levels. Methods: The study is a single-blind, randomized, controlled trial. The study was conducted in the pediatric neurology outpatient clinic of a medical hospital between January 2021 and April 2022 in Konya. The sample consisted of adolescents with epilepsy (n = 36) and their parents (n = 36). The intervention group attended the education program in three main sessions, two weeks apart. The control group received routine education. Data were collected using a Child Demographics Form (CDF), a Parent Demographics Form (PDF), the Child Attitude Toward Illness Scale (CATIS), the Self-Efficacy Scale for Children with Epilepsy (SSES-C), the Pediatric Quality of Life Inventory (PedsQL), and the Nurse Parents Support Tool (NPST). The data were analyzed using descriptive statistics, Pearson's chi-square test, Fisher's Exact test, independent samples t-test, Mann-Whitney U test, Mixed design ANOVA analysis, Cohen's d, and 95 % confidence interval. This study adhered to CONSORT research guidelines. Results: The intervention group adolescents had a significantly higher mean of all scale scores than the control group adolescents. The intervention group parents had a significantly higher mean NPST score than the control group parents. Conclusion: Healthcare professionals should organize theory-based online education programs for adolescents and their parents at regular intervals for the self-management of epilepsy in special situations, such as pandemics, where face-to-face education is impossible. Practice implications: The study revealed that, unlike existing cues that highlight the effectiveness of face-to-face education, online interventions will strengthen epilepsy self-management of children with epilepsy and their parents. In extreme situations where face-to-face education has to be postponed for a long time and in routine education interventions, it is recommended to plan and implement online education so that children with chronic diseases can maintain their self-management. (c) 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies
Sleep quality, coping, and related depression: A cross-sectional study of Turkish nurses
Get PDFBackgroundThe sleep quality of nurses affects both their health and standard of nursing care. Working conditions, depression, and coping potential can also lead to sleep problems.IntroductionSleep plays a crucial role in overall health at every stage of life. The purpose of this study is to determine the effect of sleep quality, depression, and coping mechanisms on the performance of nurses, whose sleep quality is strongly affected due to shift-based work.MethodsThe sample of this descriptive correlational study consisted of 133 healthcare workers. Data were collected using the Personal Information Form, Beck Depression Inventory (BDI), Coping Response Inventory (CRI), Pittsburgh Sleep Quality Index (PSQI), and Epworth Sleepiness Scale (ESS) and evaluated using the t test, Mann-Whitney U test, one-way ANOVA, Enter method, and linear regression.FindingsOne in three nurses reported having poor-quality sleep, and one in two nurses said they felt sleepy during the day. With declining sleep quality, the nurses' ability to cope with stress diminished, and their degree of depression increased.DiscussionThe nurses' financial situation and level of depression were key factors that influenced their quality of sleep and capacity to handle stress. To improve nurses' sleep, the shift pattern needs to change.ConclusionTo increase the quantity of sleep and enhance mental health, changes should be made to the shift schedules of nurses to allow for appropriate rest and reduce daytime sleepiness.Implications for nursing practice and policiesImproved working conditions for nurses and updated nursing standards are required to improve nurses health and wellbeng
Early and late adverse clinical outcomes of severe carbon monoxide intoxication: A cross-sectional retrospective study
Get PDFBackground Carbon monoxide (CO) results from incomplete combustion of carbon-based materials, causing symptoms such as headaches, dizziness, nausea, chest pain, confusion, and, in severe cases, unconsciousness. Normobaric oxygen therapy (NBOT) is the standard therapy, whereas hyperbaric oxygen therapy (HBOT) is recommended in severe cases of organ damage. This study examined the early and late adverse outcomes in patients with severe CO poisoning.Materials and methods This study analyzed severe cases of CO poisoning among patients admitted to the emergency department between January 2020 and May 2022. The demographic, clinical, and laboratory data of symptomatic individuals and those requiring HBOT were examined. The study recorded early outcomes, such as intubation and in-hospital mortality, and late outcomes, such as delayed neurological sequelae and 1-year mortality. Chi-square tests, Spearman's rho correlation tests, and logistic regression analyses were performed to identify factors affecting these outcomes.Results Patients who received HBOT showed a significant difference in delayed neurological sequelae (DNS) compared to those who received NBOT (p = 0.037). Significant differences were observed in the need for intubation, in-hospital mortality, and 1-year mortality between patients based on COHb levels, but no significant differences were found in DNS. The 1-year mortality probability was significantly influenced by COHb level (odds ratio = 1.159, 95% CI [1.056-1.273]). Patients receiving NBOT had a higher odds ratio for DNS risk than those receiving HBOT (odds ratio = 8.464, 95% [1.755-40.817], p = 0.008).Conclusion The study showed no differences in intubation, in-hospital mortality, and 1-year mortality rates between the HBOT and NBOT groups. However, significant differences in DNS suggest that treatment modalities have different effects on neurological outcomes. High COHb levels are associated with an increased risk of intubation, and mortality underscores the significance of monitoring COHb levels in clinical evaluations
Investigation of the types of feedback preferred by secondary school students in mathematics course and their opinions
Get PDFEğitim Bilimleri Enstitüsü, Matematik ve Fen Bilimleri Eğitimi Ana Bilim Dalı, Matematik Eğitimi Bilim DalıBu araştırmanın amacı ortaokul 5, 6, 7 ve 8. sınıf öğrencilerinin matematik dersinde tercih ettikleri geribildirim türlerini ve geribildirime ilişkin görüşlerini belirlemektir. Bu amaç doğrultusunda bu çalışmada nitel araştırma yöntemlerinden fenomenoloji tekniği kullanılmıştır. Araştırmanın örneklemini 2022-2023 eğitim öğretim yılında Aksaray ilinde bir devlet okulunda öğrenim gören 20 ortaokul öğrencisi oluşturmaktadır. Örneklem, amaçlı örnekleme yöntemlerinden ölçüt örnekleme yöntemi kullanılarak belirlenmiştir. Araştırmada veri toplamak için araştırmacı tarafından geliştirilen görüşme formları kullanılmıştır. Görüşme formları oluşturulurken birinci ve ikinci alt problem için Brookhard'ın (2008), dördüncü alt problem için Tunstall ve Gipps'in (1996) geribildirim sınıflaması temel alınmıştır. Üçüncü alt problem için King ve arkadaşlarının (2009) geliştirmiş olduğu Geribildirimin Özellikleri Ölçeği'nde yer alan maddelerden yararlanılmıştır. Görüşme formlarıyla elde edilen veriler betimsel ve içerik analiz yöntemleri ile analiz edilerek çözümlenmiştir. Araştırma bulgularına göre katılımcı öğrenciler zamanında verilen uygulamalı ve bireysel geribildirimleri tercih etmektedirler. Öğrenciler geribildirimin miktarı bakımından hedefe yönelik ve geniş kapsamlı geribildirimleri tercih etmektedirler. Öğrenciler yargılayan geribildirimler yerine betimsel, yanlışı düzeltme fırsatı sunan, pozitif geribildirimlerin yanında anlaşılır basit ve olumlu ifadeler içeren geribildirimleri tercih etmektedirler. Öğrenciler öğretmenlerinden aldıkları geribildirimleri dikkate aldıklarını bu geribildirimlerin başarılarına olumlu yönde katkı sağladığını, olumlu geribildirimlerin kendilerini motive ettiğini olumsuz geribildirimlerin motivasyonlarını düşürdüğünü düşünmektedir. Diğer yandan öğrenciler geribildirimlerin zaman kaybına neden olmadığını aksine yol gösterdiğini belirtmişlerdir. Öğrenciler pozitif değerlendirmeci geribildirim türlerinden onaylama (sözel olmayan sembol) ve ödüllendirme (not, çikolata, başarının geniş kitleler tarafından takdir edilmesi) geribildirimlerini tercih etmektedirler. Ayrıca betimleyici geribildirim türlerinden başarıyla ilgili açıklama ve gelişme yolunu oluşturma geribildirimlerini yararlı bulmaktadırlar. Cezalandırma ve onaylamama geribildirimlerini ise tercih etmemektedirler. Anahtar Kelimeler: Matematik öğretimi, Geribildirim, Geribildirim türleri, Geribildirim tercihleriThe purpose of this research is to determine the types of feedback that 5th, 6th, 7th and 8th grade secondary school students prefer in mathematics lessons and their opinions about feedback. For this purpose, the phenomenology technique, one of the qualitative research methods, was used in this study. The sample of the research consists of 20 secondary school students studying at a public school in Aksaray in the 2022-2023 academic year. The sample was determined using the criterion sampling method, one of the purposeful sampling methods. Interview forms developed by the researcher were used to collect data in the study. While creating the interview forms, Brookhard (2008)'s feedback classification was taken as basis for the first and second sub-problems, and Tunstall and Gipps (1996)'s feedback classification was taken as basis for the fourth sub-problem. For the third sub-problem, King et al. The items in the Characteristics of Feedback Scale developed by (2009) were used. The data obtained through interview forms were analyzed using descriptive and content analysis methods. According to research findings, participating students prefer practical and individual feedback given on time. In terms of the amount of feedback, students prefer targeted and comprehensive feedback. Instead of judgmental feedback, students prefer feedback that is descriptive, provides the opportunity to correct mistakes, and contains understandable, simple and positive expressions as well as positive feedback. Participants think that they take into account the feedback they receive from their teachers, that this feedback contributes positively to their success, that positive feedback motivates them, and that negative feedback reduces their motivation. On the other hand, they stated that feedback does not cause loss of time, on the contrary, it provides guidance. Among the positive evaluative feedback types, students prefer approval (non-verbal symbol) and reward (grades, chocolates, widespread recognition of success) feedback. They also find descriptive feedback types useful, such as explaining success and creating a path for improvement. They do not prefer feedback of punishment and disapproval. Keywords: Teaching mathematics, Feedback, Feedback teyps, Feedback prefer
Edible Lepidoptera as human foods - a comprehensive review
Get PDFAs the global population continues to grow, traditional protein sources like meat and fish are becoming increasingly unsustainable due to their environmental impact. Edible insects, on the other hand, are highly nutritious, require minimal resources to produce, and emit significantly fewer greenhouse gases than traditional livestock. Lepidoptera, one of the most diverse insect orders, contains some popular edible species that have been consumed traditionally for centuries across the globe. Based on this review, about 24 families with a total of about 350 edible lepidopteran species were recorded. They are often praised for their excellent nutritional value, such as having high protein and healthy fat content. Edible lepidopterans also contain minerals, essential amino acids, and vitamins, making them a nutritious addition to a balanced diet. They also contain bioactive compounds which have various nutraceutical and pharmaceutical properties. Furthermore, some edible lepidopterans can be farmed and require minimal space and resources. However, there are significant challenges associated with their use as food. One of the primary challenges is the lack of regulations governing their production and distribution, which creates uncertainty for consumers and businesses alike. Consumer acceptance is also a significant barrier to the widespread adoption of insects as food. To overcome these challenges, there is a need for clear regulations that ensure the safety and quality of insect-based products. Furthermore, it is important to raise awareness about the nutritional and environmental benefits of edible insects as sustainable food for the future to promote their acceptance among consumers.Nobelium Joining Gdansk Tech Research Community [DEC 33/2022/IDUB/l.1, 036236]; School of Engineering and Science [0020209I13]; FEMSA-Biotechnology Center at Tecnologico de Monterrey [0020209I13]Financial support from Nobelium Joining Gdansk Tech Research Community (contract number DEC 33/2022/IDUB/l.1; NOBELIUM nr 036236) is gratefully acknowledged. R. Castro-Munoz also acknowledges the School of Engineering and Science and the FEMSA-Biotechnology Center at Tecnologico de Monterrey for their support through the Bioprocess (0020209I13) Focus Group
Transmission of grapevine Roditis leaf discolouration-associated virus by the vine mealybug, Planococcus ficus (Signoret) in Turkey
Get PDFGrapevine Roditis leaf discolouration-associated virus (GRLDaV) is from Badnavirus decoloratiovitis species, which is a member of the genus Badnavirus, associated with Roditis leaf discolouration disease. Although mealybug transmission of GRLDaV by Planococcus ficus has been demonstrated elsewhere, its role in the transmission has not been shown in different grapevine varieties, isolates, acquisition periods (AP) and inoculation periods (IP). Individiual P. ficus was collected from a vineyard in Adana, Turkey and used for insect culture establishment for the transmission studies. Virus transmission experiments to the Vitis vinifera cv. Yalova Incisi via P. ficus was carried out using a local GRLDaV isolate by applying AP-IP for 24 , 48 h or 72 h. The virus was transmitted by P. ficus in all AP-IP trials (100%, 60%, and 20% of recipient vines infected after 24 , 48 h, and 72 h, respectively). GRLDaV was first detected in the recipient grapevines four weeks after transmission. The results showed that P. ficus transmitted GRLDaV in a semipersistent manner. All the virus infected vines in the experiment showed initial leaf symptoms of yellow vein banding and/or discolouration, followed by yellow and/or reddish discolouration of the leaves in late summer, as observed in GRLDaV-infected vines in the field.Scientific Research Projects Coordination Unit of Nigde Omer Halisdemir University. University [TGT-2020/5-BAGEP]This work was supported by Scientific Research Projects Coordination Unit of Nigde Omer Halisdemir University. University [Grant Number Project Number: TGT-2020/5-BAGEP]
Maden galerilerinde farklı kaya kütle sınıflama sistemleri ile durabilite analizi uygulaması: Yahyalı/Kayseri Pb-Zn ocağı örneği
Get PDFBu çalışma Yahyalı/Kayseri bölgesinde kurulu bulunan bir yer altı Kurşun-Çinko (Pb-Zn) ocağının ana nakliyat galerisinde gerçekleştirilen Kaya Kütlesi Karakterizasyonu ile ilgili saha ve laboratuvar çalışmalarını kapsamaktadır. Kaya malzemesi ve kaya kütlesi üzerinde yapılan detaylı çalışmalarla Kaya Kütle Puanlaması (RMR), Kaya Kütle Kalitesi (Q) ve Jeolojik Dayanım İndeksi (GSI) sistemleri ilgili tüm parametreler hesaplanarak duraylılık analizi yapılmıştır. Sonuçlar kireçtaşı formasyonu içerisinde açılan ana galerinin mevcut kesiti dikkate alındığında gerek duyulan bölümlerde lokal tahkimat uygulaması yapılması koşuluyla genel olarak tahkimatsız uzun yıllar ayakta kalabileceğini göstermiştir. Ancak madenlerin dinamik yapılar olduğu ve üretimle birlikte sürekli değişim geçirdikleri unutulmamalıdır. Kaya kütle koşulları, denetimsiz patlatma gibi mühendislik hataları ile değişebilecektir. Kullanılan kaya kütle sınıflama sistemleri ile her ne kadar bu sonuca varılmış olsa da, ani kaya kütle kalitesi değişimlerinin olabileceği lokasyonlarda (özellikle cevher zonları, fay zonu, erime boşluğu) ve tehlike arz eden yerlerde tahkimat uygulamasına mutlaka devam edilmelidir ve sürekli olarak denetlenmelidir
Calibrating the combined hardening rule parameters for burr-free forging simulation of the torque rod joint
Get PDFJoints used in the automotive industry are widely manufactured by forging. A cold upsetting process can provide burr-free forging which reduces economic loss by preventing material waste. In this study, finite element simulations for the upsetting of a torque rod joint made of 41Cr4 steel are performed. The novelty of the present study lies in the fact that the upsetting performance is investigated through simulation having hardening model in order to replace the existing forging process. The performance of hardening models is studied for an accurate simulation and optimum parameters are determined. A combination of the bilinear isotropic hardening rule and Chaboche's nonlinear kinematic hardening rule is employed with the associated flow rule and Hill48 yield criterion to set up a plasticity model of the upsetting process for the first time. The parameters of the bilinear isotropic hardening rule are determined from monotonic tensile tests. The Chaboche's parameters are determined by using hysteresis loops obtained from strain-controlled low-cycle fatigue tests. The parameters of both rules are combined. Furthermore, they are calibrated using inverse analysis based on the optimization method. Genetic algorithm is used for optimization. The experimental diameter and height measurements of the joint are compared with those obtained from the optimized model. The results show that the application of the combined hardening rule provides better prediction performance of the upset dimensions with minimum dimensional tolerance. The calibrated parameters are presented for the upsetting process. The calibrated parameters of the combined hardening model for the upsetting are YS = 446.64 MPa, TM = 3363.05 MPa, C-1 = 452.31 MPa, gamma(1) = 55.165, C-2 = 212.13 MPa, gamma(2) = 12.24, C-3 = 194.191 MPa, gamma(3) = 10.00 where YS, TM, C-1,C- gamma 1,C- C-2,C- gamma 2,C- C-3,C- gamma 3 are hardening models' parameters. Absolute percent true error (APE) is 0.19%. The parameters are YS = 1.93 MPa, TM = 6.98 MPa, C-1 = 580.79 MPa, gamma(1) = 1.08, C-2 = 597.23 MPa, gamma(2) = 0.98, C-3 = 565.05 MPa, gamma(3) = 2.87 in the case of cyclic load. APE is 1.66%. Also upsetting force requirement and material flow path are presented. The forging process can be replaced by the burr-free upsetting process with necessary changes in the die and press bench design. This replacement will save the 128-gr material per each one of the torque rod joint part.Ditas Dogan Yedek Parca Imalat ve Teknik A.S.This work was supported by Ditas Dogan Yedek Parca Imalat ve Teknik A.S. We would like to thank them for their support. We would like to thank Dr. Mehmet Seyhan, Karadeniz Technical University for providing the opportunity to use Ansys (R) software for simulations for educational purposes. We are very grateful to the reviewers for their valuable comments, which have been utilized to improve the quality of the paper