Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Bulut, Hasan(53)
- Baskonus, Haci Mehmet(52)
- Alataş, Mevlüt(39)
- Gul, Muhammet(39)
- Serdar, Osman(38)
- Güler, Ömer(37)
- Akkurt, Nevzat(31)
- Benzer, Fulya(30)
- Sulaiman, Tukur Abdulkadir(29)
- Yucesan, Melih(29)
- Zengin, Gokhan(29)
- Kocabaş, Mehmet(28)
- Topal, Murat(26)
- Batan, Nevzat(25)
- Kök, Mediha(25)
- Ezer, Tülay(24)
- Paksoy, Mehmet Yavuz(24)
- Yildirim, Ozal(23)
- Tekin, H.O.(22)
- Utku, Anıl(22)
- ALMisned, Ghada(21)
- Ince, Muharrem(21)
- Öbek, Erdal(21)
- Erten, Fusun(20)
- Aslan, Naim(19)
- Celik, Erkan(19)
- Yildirim, Numan(19)
- Cakilcioglu, Ugur(18)
- Dal, Murat(18)
- Dal, Nursel Alp(18)
- Sahin, Kazim(18)
- Özkaynak, Fatih(18)
- Aslan, Alper(17)
- Erata, Hüseyin(17)
- Orhan, Cemal(17)
- Ergen, Burhan(16)
- Tanyol, Mehtap(16)
- Demir, Yakup(15)
- Etli, Serkan(15)
- Işık, Erdem(15)
Yayınlar
- MakaleAçık Erişim2021Dynamic Connectedness between Sector Indices: Evidence from Borsa Istanbul
Ekinci, Ramazan; Gençyürek, Ahmet Galip
The aim of the study is to analyze the shock and volatility spillover between BIST Finance, Industry, Technology, Tourism, Transportation, Food, and Retail-Trade sectors. In this direction, daily data obtained between January 5, 2010, and December 4, 2020, were analyzed using a new method named TVP-VAR Diebold Yilmaz Spillover Index developed by Antonakakis et al. (2019). Our results indicate that the industrial and financial sectors are in the leading position in terms of the shock and volatility spillover, while other sectors generally are in the lagging position.
AtıfWoS4OpenAlex6TR Dizin3
İncele - MakaleAçık Erişim2021Scopus SJRQ1The effect of the platelet-rich plasma and ozone therapy on tendon-to-bone healing in the rabbit rotator cuff repair model
Gurger, Murat; Once, Gokhan; Yilmaz, Erhan; Demir, Sukru; Calik, Ilknur; Say, Yakup; Kavakli, Ahmet; Key, Sefa; Gurbuz, Mustafa Umit; Bingollu, Onur
BackgroundThe aim of this study is to histologically and biomechanically investigate the effects of local PRP and ozone therapy (O2O3) on tendon-to-bone healing in a rabbit model of the supraspinatus tendon tear.MethodsFour groups were formed to have seven rabbits in each group: repair, R; repair + PRP, RP; repair + ozone, RO; and repair + PRP + ozone, RPO. The supraspinatus tendon was detached by sharp dissection from the footprint and an acute tear pattern was created. Thereafter, tendon repair was performed with the transosseous technique. In the RP group, PRP, and in the RPO group, PRP + O2O3 mixture was injected to the tendon repair site. In the RO group, O2O3 gas mixture was injected into subacromial space three times a week for a total of 4 weeks. The study was ended at postoperative 6th week.ResultsWhen compared with the R group, a statistically significant increase was observed in the biomechanical strength of the RP and RPO groups. The highest increase in biomechanical strength was detected in the RPO group. The histology of the RO and RPO groups showed better collagen fiber continuity and orientation than the R and RP groups.ConclusionsThe results obtained from this study show that the ozonized PRP can be used as biological support to increase tendon-to-bone healing. However, these results need to be supported by clinical studies.
AtıfWoS29OpenAlex35
İncele - MakaleAçık Erişim2021Biomechanical Comparison of Three Treatments for Medial Malleolar Fractures
Yurul, Gokhan; Demri, Sukru; Gürger, Murat; Key, Sefa; Say, Yakup; Senel, Ahmet
Amaç: İskelet sistemine ait tüm kırıklar içerisinde %10 gibi bir oranla nispeten sık görülen ayak bileği kırıkları kalça kırıklarından sonra alt ekstremitenin en sık görülen ikinci kırık türüdür. Bu çalışmada, medial malleolün transvers kırıklarında medial malleol plağı, hazır gergi bandı, malleol vidası yöntemlerinin biyomekanik olarak karşılaştırılması amaçlanmıştır. Yöntemler: Kasaptan, insan tüketimi için kesilmiş, yumuşak dokularından arındırılmış 42 adet inek tibiası temin edildi. Çalışma kapsamına alınan kemiklerin medial malleollerine kesici motor yardımıyla transvers kırıklar oluşturuldu ve her biri 14 kemikten oluşan 3 gruba ayrıldı. Bu 3 gruptaki oluşturulmuş olan medial malleol kırıkları hazır gergi bandı, malleol vidası, medial malleol plağı kullanılarak usulüne uygun tespit edildi. Örnekler laboratuvarda çekme kuvveti ve transvers kuvvet uygulayan test cihazında hazırlanmış aparatlar yardımıyla biyomekanik analize tabi tutuldu. Alınan veriler kuvvetdeplasman eğrilerine dönüştürülerek yorumlandı. Bulgular: Çekme kuvvetinde medial malleol plağı yöntemi, 2 mm deplasman kuvveti ve katastrofik hasar kuvveti açısından diğer yöntemlere göre daha yüksek kuvvetlere dayanırken, dayanıklılık açısından hazır gergi bandı yöntemiyle arasında fark bulunamamıştır. Medial malleol plağı yönteminin çekme kuvvetinde malleol vidası yöntemine göre daha dayanıklı olduğu görülmüştür. Tranvers kuvvet uygulanan gruplarda 2 mm deplasman kuvvetinde medial malleol plağı yöntemi, hazır gergi bandı ve malleol vidası yöntemlerine göre daha yüksek kuvvetlere dayanabilmiştir. Transvers kuvvetlerde medial malleol plağı yöntemi, hazır gergi bandı ve malleol vidası yöntemlerine göre daha dayanıklı bulunmuştur. Sonuç: Medial malleol plağı medial malleolün transvers kırıklarında uygulanabilecek bir yöntem olup bu yöntemin olası dezavantajları için yapılacak başka çalışmalara ihtiyaç olduğunu düşünmekteyiz.
- MakaleAçık Erişim2021Scopus SJRQ1From subduction to strike slip-related volcanism: insights from Sr, Nd, and Pb isotopes and geochronology of lavas from Sivas-Malatya region, Central Eastern Anatolia
Di Giuseppe, Paolo; Agostini, Samuele; Di Vincenzo, Gianfranco; Manetti, Piero; Savasçin, Mehmet Yilmaz; Conticelli, Sandro
AtıfOpenAlex16İncele - MakaleAçık Erişim2021Synthesis and Characterization of Silver Nanoparticles and Coating with Chitosan
Ates, Mehmet; Yilmaz, Ersen; Kar, Bulent; Durukan, Ilknur Kars
Recent advancements in nanotechnology have garnered increasing attention due to the improvements in producing and utilizing particles whose sizes are extremely small. There is particular interest in metal nanoparticles due to their distinctive properties. Silver nanoparticles (Ag-NPs) have been of particular interest owing to their unique electrical, optical and physicochemical properties as well as their biomedical applications. Ag-NPs are the fastest growing class of nanoscale materials because of their antibacterial activities. They are now considered to be the next generation antimicrobials. Today, owing to their disinfectant properties, Ag-NPs are extensively used in numerous consumer products, including disinfecting medical devices and home appliances, paints, optical devices, plastics, textiles, soaps and laundry detergents, cosmetics, health-care products, as well as in food packing and food products as preservative and anti-caking agents. Despite their widespread usage, the products containing Ag-NP additives are a serious environmental and human health concern because of their toxicity. Studies on cell and bacterial cultures have shown that Ag-NPs are toxic; and the toxic effects are mainly due to the dissolved Ag ions when Ag-NPs degrade in water. In this study, considering the criteria outlined above, the purpose of the study and Ag-NPs were chemically synthesized in the laboratory environment and modified as chitosan coating. UV-Vis spectroscopy, transmission electron microscopy, scanning electron microscopy, X-ray crystallography and zeta potential analysis were used to characterize the silver nanoparticles.
AtıfWoS3OpenAlex4TR Dizin3İncele - BildiriAçık Erişim2021Control of automatic fire extinguishing operation for 5 forest areas with SCADA
Ustundag, Aybike; Gencer, Cetin
The number of forest fires has increased significantly in recent years. Interventions to forest fires from air and land are very difficult and dangerous. In addition, since these interventions are time-consuming, forest fire can spread to a much wider area. In this study, an automatic fire extinguishing system was designed using SCADA for 5 forest regions up to 5 hectares. In the event of a fire in the system, the smoke sensor in the fire area becomes active and the IP camera image in this area is displayed on the screen. The pressurized water flushing tap, which automatically rotates 360 degrees, works in the area. If desired, automatic operation can be canceled and manually adjusted water flushing tap can be operated. The system gives a warning when the tank water drops below 1 ton. The aim of this study is to automatically intervene early in any fire that may occur in the forest and to control the fire before it spreads.
AtıfScopus1OpenAlex1
İncele - MakaleAçık Erişim2021Scopus SJRQ2New national and regional bryophyte records, 67
Ellis, L.T.; Alataş, M.; Álvaro Alba, W.R.; Charry Giraldo, A.M.; Amatov, V.; Batan, N.; Becerra Infante, D.A.; Burghardt, M.; Czernyadjeva, I.V.; Yu. Kuzmina, E.
AtıfScopus19OpenAlex19İncele - Derleme MakaleAçık Erişim2021Scopus SJRQ2Hospital location selection: A systematic literature review on methodologies and applications
Gul, Muhammet; Guneri, Ali Fuat
The increased focus of people on the quality of health care in recent years has led hospital owners to develop strategies and policies to improve medical services through the establishment of new hospitals. For hospitals to be competitive, the hospital's location and proximity to potential patients are considered crucial factors in establishing new hospitals. In this context, evaluating and selecting the most suitable hospital location to establish a new hospital from the multicriteria decision-making (MCDM) perspective is a priority for the entrepreneurs or government to gain a competitive advantage. Therefore, this study aims to present a systematic literature review of the hospital location selection problem considering the applied methods and application areas. The preferred reporting items for systematic review and meta-analysis statement (PRISMA) are used as a reference framework. Initially, known electronic databases (Web of science, IEEEXplore, Scopus, Science direct, and Google Scholar) were searched up to the early 2021. A number of 47 articles are selected and analyzed under this systematic framework based on inclusion-exclusion points. State-of-the-art developments in adopting MCDM methods and their fuzzy extensions are summarized. All the articles have been examined in a systematic taxonomy to find answers to six research questions (trend, country of origin, outlet journal, MCDM methods used, MCDM environment and criteria type, and decision criteria used). Results show that (1) AHP and GISbased MCDM models are the most contributing approaches to the solution of this problem, (2) location selection criteria are mostly cost, demand, environment, population, government, competition in the market, and distance to some important places, (3) the fuzzy structure is also preferred in addition to the MCDM structure depending on the crisp data type, and (4) the location selection criteria are mostly considered subjective. We pay attention to promising directions that can dominate future research in this field from a methodological or applicability perspective. This study shows the current views and opportunities for researchers and practitioners and acts as a guide to encourage more creative studies in this field.
AtıfScopus58WoS43OpenAlex71İncele - MakaleAçık Erişim2021Scopus SJRQ2The comparisons of fatty acid composition in some anaerobic gut fungi neocallimastix, orpinomyces, piromyces, and caecomyces
Kar, Bülent; Özköse, Emin; Ekinci, Mehmet Sait
The objective of this study were to identify the fatty acid composition for decanoic (C10:0), tridecanoic (C13:0), myristic (C14:0), pentadecanoic (C15:0), palmitic (C16:0), stearic (C18:0), oleic (C18:1n9c), linoleic (C18:2n6c), arachidic (C20:0), arachidonic (C20:4n6), heneicosanoic (C21:0), erucic (C22:1n9) and Cis-4,7,10,13,16,19-docosahexaenoic (C22:6n3) acids by Neocallimastix, Orpinomyces, Caecomyces and Piromyces species of rumen fungus during in vitro culture. Fatty acid (FA) profile of anaerobic fungi comprises carbon chains of length ranging from 10 to 22 were analyzed as methyl esters. Analysis of fatty acids was performed using Gas Chromatography-Mass Spectrophotometer (GC-MS). FA measures are presented as proportions of relative amounts (% total fatty acid). The highest amounts of fatty acids for all samples were found as myristic (C14:0) acid. The tridecanoic (C13:0) acid represented the second abundant FA in the fungi in all experimental groups. Stearic acid (C18:0) was the third major fatty acid for isolates investigated in the current study. In addition, another fatty acid was palmitic (C16:0) acid with relative amount representing >20% of total FA in all samples. Pentadecanoic (C15:0) acid could not be found in any other samples except Orpinomyces sp. (GMLF5). It is concluded that biohydrogenation of fatty acid composition by anaerobic gut fungi are very variable.
AtıfScopus5WoS3OpenAlex5İncele - MakaleAçık Erişim2021First Clinical Placement: Nursing Students’ Views
Korkmaz, Fatos; Tarakcioglu Celik, Gul Hatice; Kucukkelepce, Gulhan Erkus; Arslan, Sevda; Gul, Senay
Objective: Analyzing students’ experiences about clinical practice will help instructors prepare learning settings where students can have more positive experiences. The purpose of this article is to identify nursing students’ views regarding their clinical placement. Method: This descriptive study was conducted with fresher’s in a nursing department of university during spring term of the 2014-2015 academic year in Ankara/Turkey. The data was collected with the question forms prepared by the researchers after the final exam of the “Fundamentals of Nursing Course”. 253 students were provided questionnaires to answer, which were collected after completion. Results: Students mean age was 20.2; 85.4% of them were female and 40.3% of them choose this department for employment opportunities. Students evaluated professional competence and presence of nurses, as “Good” and “Very Good” (with 80% to 90%) and, communication between nurse and patient as “Moderate” and “Bad” (with 60%). Prejudices regarding clinical practice (with 38.7%), fear of making mistake (with 55.3%), prejudices toward clinical setting (with 58.5%), and grade anxiety (with 29.2%) were stated as factors that affect clinical learning negatively. Conclusion: Students’ learning was affected by healthcare professions especially nurses, they worked with, instructors as well as some factors stem from themselves (fear of making a mistake, grade anxiety).
AtıfScopus1WoS1İncele - MakaleAçık Erişim2021Scopus SJRQ2Pollen morphology of eight endemic Inula L. (Asteraceae) species in Turkey
Karlıoğlu Kılıç, Nurgül; Yılmaz Dağdeviren, Rüya; Paksoy, Mehmet Yavuz; Tuncalı Yaman, Tutku
The pollen morphology of eight endemic species of the genus Inula L. (Asteraceae)–I. helenium subsp. orgyalis (Boiss.) Grierson, I. helenium subsp. vanensis Grierson, I. macrocephala Boiss. & Kotschy ex Boiss., I. discoidea Boiss., I. sarana Boiss., I. fragilis Boiss. & Hausskn., I. anatolica Boiss. and I. sechmenii Hartvig & Strid–distributed in Turkey was studied with light microscopy and scanning electron microscopy. We found that the pollen of these Inula taxa are prolate-spheroidal in shape (except in Inula discoidea), with the polar axis ranging from 19.18 to 33.14 µm and the equatorial diameter ranging from 18.54 to 32.92 µm. The pollen grains are tricolporate and their ornamentation is echinate. The exine thickness ranges from 0.87 to 2.07 µm. As this study demonstrates, results of Principal Component Analysis are revealed that some of the pollen characters, such as spine length and width, are significant morphological characters for taxonomic discrimination of the eight endemic Inula taxa. According to cluster analysis, two main groups of examined taxa are constituted.
AtıfScopus9WoS9OpenAlex10İncele - MakaleAçık Erişim2021Scopus SJRQ4Regulation of cell signaling pathways by Wogonin in different cancers: Mechanistic review
Butt, Ghazala; Ozbey, Ulku; Malik, Durrshahwar; Attar, Rukset; Youssef, Lara; Farooqi, Ammad Ahmad
Natural products have historically been invaluable as a premium source of therapeutic agents. Recent advancements in genomics and structural biology have portrayed a high-resolution landscape of the diversity of proteins targeted by pharmacologically active products from natural sources. Natural product research has generated valuable wealth of information and cutting-edge research-works have leveraged our conceptual knowledge altogether to a new level. Wogonin (5,7-dihydroxy-8-methoxyflavone) is an O-methylated flavone and has attracted noteworthy appreciation because of its ability to pharmacologically target plethora of cell signaling pathways in different cancers. In this mini-review, we have gathered scattered pieces of available scientific evidence to summarize how wogonin pharmaceutically targeted Wnt/β-catenin, JAK/STAT, VEGF/VEGFR and TRAIL-driven apoptotic pathways in wide variety of cancers. We have also critically analyzed how wogonin prevented carcinogenesis and metastasis in tumor-bearing mice. Although researchers have uncovered pleiotropic role of wogonin in the regulation of different oncogenic signaling cascades but there are visible knowledge gaps in our understanding related to regulation of non-coding RNAs by wogonin. Future studies must converge on the unraveling of additional drug targets for wogonin to achieve a fuller and realistic understanding of the chemopreventive properties of wogonin.
AtıfScopus5WoS6İncele - MakaleAçık Erişim2021Scopus SJRQ3Lutein/zeaxanthin isomers regulate neurotrophic factors and synaptic plasticity in trained rats
Orhan, Cemal; Erten, Füsun; Er, Beşir; Tuzcu, Mehmet; Şahin, Nurhan; Durmaz Kurşun, Öznur Ece; Juturu, Vijaya; Şahin, Kazim
Background/aim: This study was conducted to elucidate the effects of lutein/zeaxanthin isomers (L/Zi) on lipid metabolism, oxidative stress, NF-κB/Nrf2 pathways, and synaptic plasticity proteins in trained rats. Materials and methods: Wistar rats were distributed into four groups: 1) control, 2) L/Zi: rats received L/Zi at the dose of 100 mg/kg by oral gavage, 3) exercise, 4) exercise+L/Zi: rats exercised and received L/Zi (100 mg/kg) by oral gavage. The duration of the study was eight weeks. Results: Exercise combined with L/Zi reduced lipid peroxidation and improved antioxidant enzyme activities of muscle and cerebral cortex in rats (p < 0.001). In the Exercise + L/Zi group, muscle and cerebral cortex Nrf2 and HO-1 levels increased, while NF-κB levels decreased (p <0.001). Also, L/Zi improved BDNF, synapsin I, SYP, and GAP-43 levels of the cerebral cortex of trained rats (p < 0.001). The highest levels of BDNF, synapsin SYP, and GAP-43 in the cerebral cortex were determined in the Exercise+L/Zi group. Conclusion: These results suggested that exercise combined with L/Zi supplementation might be effective to reduce neurodegeneration via improving neurotrophic factors and synaptic proteins, and oxidative capacity in the cerebral cortex.
AtıfScopus15WoS13OpenAlex14İncele - MakaleAçık Erişim2021Scopus SJRQ3Optimization of Meristem Culture to Obtain Virus-Free Clonal Basic Material of Grape Cultivars; [Virüsten Ari Klonal Üzüm Çeşitlerine Ait Baz Materyal Eldesinde Mersitem Kültürünün Optimizasyonu]
Karaca Sanyürek, Nesrin; Çakir, Atilla; Söylemezoğlu, Gökhan
The main purpose of this study was to obtain a clone free from viruses and virus-like diseases to rapidly reproduce these clones. Meristems were extracted and cultured for the production of the base material for the Kalecik Karası number 4 and 23-2 clones. After the explants formed shoots, the effects of 12 dissimilar auxin (IBA) and cytokine (2İP and BAP) concentrations on the growth of the root and plant were investigated. In the meristem stage clones showed a 60 % and 80 % viability rate. In the rooting stage, it was determined that shoot formation and leaf numbers were higher in the Kalecik Karası clone number 23-2 and the 1.0 mg. L-1 IBA+0.5 mg. L-1 BAP/2 IP concentration showed the highest shoot formation and leaf number value. The highest callus levels were determined as 0.43 cm for clone number 4 and 0.72 cm for clone number 23-2. M S (Murashige & Skoog) with 2mg. L-1 IBA showed the highest rooting value. The longest root values were 3.47 cm with 1mg. L-1 IBA for clone number 4, and 3.90 cm with 0.5mg L-1 IBA for clone number 23-2.
AtıfScopus3OpenAlex2TR Dizin2İncele - MakaleAçık Erişim2021Scopus SJRQ3Determination of fatty acids in Allium tuncelianum (Tunceli garlic) by gas chromatography with flame ionization detection (GC–FID)
Ugur, Yilmaz; Karaaslan-Ayhan, Nagihan; Icen, M. Sina; Bicim, Tulin; Erdogan, Selim; Yaman, Mehmet
Garlic has an important place in daily nutrition. It is consumed by people because of its antimicrobial, antibacterial, and antioxidant properties, and it is also known to be good for many diseases. Along with these properties of garlic, its fatty acid content is also important. The goal of this study is to determine the fatty acids in Allium tuncelianum (Tunceli garlic), which grows naturally in Tunceli, Turkey, by gas chromatography with flame ionization detection (GC–FID). Fifteen of 37 fatty acids studied were detected in Allium tuncelianum, and the primary fatty acids in the sample extracts were determined to be the polyunsaturated fatty acid (PUFA) linoleic acid (C18:2n6c, 41.595%) and the monounsaturated fatty acid (MUFA) oleic acid (C18:1n9c, 33.302%). Small quantities of saturated fatty acids (SAFAs) were also present, including palmitic acid (C16:0, 11.739%), henoicosanoic acid (C21:0, 6.946%), and stearic acid (C18:0, 2.362%).
AtıfScopus12WoS8OpenAlex11İncele - MakaleAçık Erişim2021Scopus SJRQ3Determination of anthocyanins and anthocyanidins in the wild grape (Vitis sylvestris Gmelin) by high-performance liquid chromatography-diode array detection (HPLC-DAD)
Karaaslan-Ayhan, Nagihan; Yaman, Mehmet
The determination of anthocyanins and anthocyanidins in wild grapes (Vitis sylvestris Gmelin) from Tunceli-Turkey are reported together with the influence of the extraction conditions on the results. Representative sets of anthocyanins (delphinidin-3-o-glucoside, cyanidin-3-o-glucoside, pelargonidin-3-o-glucoside, malvidin-3-o-glucoside) and anthocyanidins (delphinidin, cyanidin, pelargonidin, malvidin) were simultaneously determined by high performance liquid chromatography with diode array detection (HPLC-DAD). The extraction conditions including the solvent type, extraction time and liquid:solid ratio (v:w) were optimized. The anthocyanin and anthocyanidin contents changed significantly depending on the extraction conditions. Malvidin-3-o-glucoside was identified to be the primary compound.
AtıfScopus10WoS8OpenAlex11İncele - MakaleAçık Erişim2021Scopus SJRQ3Survival of Shiga Toxin-Producing Escherichia coli (STEC) Serogroups During Production and Storage of Yogurt
Celik1, G.; Dikici, A.; Koluman, A.
In this study, the survival of Escherichia coli O157:H7 and non-O157 STEC serogroups of O26, O111, O103, and O145 were investigated during production and storage of yogurt. For this purpose, pathogens were individually inoculated into milk after pasteurization along with the starter culture (approximately 7.00±1.00 log10 cfu/g). After incubation at 44oC (about 180 min), yogurt samples were capped and stored at 4oC for 20 days. Pathogens were enumerated at 0, 5, 10, 15, and 20th days of storage. Lactic acid content (%) and pH of the samples were also screened. Moreover, mesophilic Lactococcus spp. and mesophilic Lactobacillus spp. were enumerated during production of yogurt.After incubation, the number of E. coli O157, O26, O103, O145, O111were 6.76±0.45, 6.64±0.53, 7.12±0.43, 6.00±1.39, 5.89±1.37 log10 cfu/g, respectively. A significant decrease was determined in all groups during the storage of yogurt samples at 4oC (p<0.05). It was detected on the 20th day of storage that the number of E. coli O157:H7 and non-O157 STEC serogroups of O103 and O145 were under the detection limit. However, STEC O26 and O111 were viable around 1.51±0.98 and 1.18±0.62 log10 cfu/g respectively. Results of the study showed that Escherichia coli O157:H7 and non-O157 STEC serogroups might pose a potential health risk during production and storage of yogurt.
AtıfScopus4OpenAlex5İncele - MakaleAçık Erişim2021Scopus SJRQ2Metaheuristic Approaches Integrated with ANN in Forecasting Daily Emergency Department Visits
Pekel, Engin; Gul, Muhammet; Celik, Erkan; Yousefi, Samuel
The overall service quality level of Emergency Departments (EDs) can be improved by accurate forecasting of patient visits. Accordingly, this study aims to evaluate the use of three metaheuristic approaches integrated with Artificial Neural Network (ANN) in forecasting daily ED visits. To do this, five performance measures are used for evaluating the accuracy of the proposed approaches, including Bayesian ANN, Genetic Algorithm-based ANN (GA-ANN), and Particle Swarm Optimization algorithm-based ANN (PSO-ANN). The outputs of this study show that the PSO-ANN model provides the most dominant performance in both the training and testing process. The lowest error is obtained with a mean absolute percentage error (MAPE) of 6.3%, Mean Absolute Error (MAE) of 42.797, Mean Squared Error (MSE) of 2499.340, Root Mean Square Error (RMSE) of 49.933, and R-squared (R2) of 0.824 on the training dataset. The lowest error with an MAPE of 6.0%, MAE of 40.888, MSE of 2839.998, RMSE of 53.292, and R2 of 0.791 is also obtained on the testing process.
AtıfScopus7WoS5OpenAlex7İncele - MakaleAçık Erişim2021Scopus SJRQ2The effect of nurses' compassion on burnout: A cross-sectional study
Kaplan Serin, Emine; Özdemir, Ahmet; Işik, Kevser
Purpose: This study was carried out to determine the effect of nurses' compassion on burnout. Design and Methods: This cross-sectional descriptive study was conducted with 177 nurses. An introductory information form, the compassion scale and the Maslach burnout inventory were used as the data collection tools. Frequency, percentage, t test, analysis of variance, Kruskal-Wallis, correlation, and regression were used in the analysis of the data. Findings: The majority of the participants were determined to be female, married and university graduates. It was determined that there was a significant negative relationship between the nurses' sense of compassion and burnout levels, and burnout decreased as compassion increased. Practical Implication: Burnout and compassion fatigue may lead to inadequate care for the patient. This situation will negatively influence nurses' care quality.
AtıfScopus13WoS10OpenAlex14İncele - MakaleAçık Erişim2021Scopus SJRQ2The usage of Ohmic heating in milk evaporation and evaluation of electrical conductivity and performance analysis
Ariç Sürme, Seda; Sabancı, Serdal
Ohmic heating is based on the principle of heating by passing an alternating current through the product between two electrodes and is an increasingly current electrical heating technique in food applications. The main purpose of the present study is to evaporate milk (cow's milk) from 7.85 kg-water/kg-dry matter (DM) content to approximately 3 kg-water/kg-DM content under atmospheric conditions in different voltage gradients and to examine the electrical conductivity (EC) value during the evaporation process. Also, performance evaluation was determined and compared with the traditional method. It was determined that the total process time in the Ohmic heating assisted evaporation (OHAE) process was 31–92.5 min, while in the traditional evaporation process, the total process time was 41.10 ± 2.1 min. The EC value was 0.43–1.89, 0.44–1.89, and 0.44–1.92 S/m for 7, 9, and 11 V/cm, respectively. In the OHAE process, it was determined that as the voltage gradient increased, the energy and exergy efficiency increased. The lowest energy and exergy efficiency values were obtained in the traditional method. In general, OHAE can be applied to milk, and it was a highly efficient process. Practical applications: Ohmic heating is one of the current electrical heating techniques studied in many areas by researchers. In this study, the change in electrical conductivity and performance values during the milk evaporation process was examined and compared with the traditional method. The OHAE process was more efficient than the traditional method in terms of both energy and exergy efficiency. It is thought that this evaluation will contribute as a data source for both industry and pilot-scale designs. Besides, it will contribute data to the literature with the exergy analysis that is limited in the Ohmic heating process. As a result, a concentrated milk sample with high yield and approximately 3 kg water/kg DM content was obtained.
AtıfScopus21WoS16OpenAlex20İncele