Yayınlar
Koleksiyondaki öğeler
- MakaleYalnız künye2024Scopus SJRQ1Effect of Lavender Oil on Preoperative Anxiety: Systematic Review and Meta-analysis
Kulakaç, Nurşen; Sayılan, Aylin Aydın
Purpose: Surgical interventions are known to induce anxiety in patients due to the associated risks and potential complications. Various methods are employed to alleviate preoperative anxiety. This study aimed to investigate the impact of lavender oil application on the anxiety levels of patients scheduled for surgical procedures. Design: Systematic review and meta-analysis. Methods: Studies were accessed using the keywords “preoperative and lavender oil and stress” in Turkish and English between July 1 and 30, 2022, through PubMed (including MEDLINE), Cochrane, EBSCOhost, Web of Science, YÖK National Thesis Center, and Google Scholar. The standardized mean difference was calculated using random-effects models, and the Cochrane Collaboration tool was used to assess the risk of bias in each study. The study was prepared according to the Preferred Reporting Items for Systematic Reviews and Meta-analysis checklist. Findings: Twenty studies were included in the analysis. The anxiety level of the experimental group to which lavender oil was applied before the surgical intervention was significantly lower than that of the control group (standardized mean difference:−5.40; 95% CI: −8.76 to −2.04). Conclusion: Preoperative lavender oil application was found to be an effective method for relieving patients’ anxiety. Lavender oil is thought to be a potential standalone treatment for preoperative anxiety.
AtıfScopus6WoS5OpenAlex7
İncele - MakaleAçık Erişim2024Scopus SJRQ1Analysis of a discrete time fractional-order Vallis system
ŞİŞMAN, Şeyma; MERDAN, Mehmet
Vallis system is a model describing nonlinear interactions of the atmosphere and temperature fluctuations with a strong influence in the equatorial part of the Pacific Ocean. As the model approaches the fractional order from the integer order, numerical simulations for different situations arise. To see the behavior of the simulations, several cases involving integer analysis with different non-integer values of the Vallis systems were applied. In this work, a fractional mathematical model is constructed using the Caputo derivative. The local asymptotic stability of the equilibrium points of the fractional-order model is obtained from the fundamental production number. The chaotic behavior of this system is studied using the Caputo derivative and Lyapunov stability theory. Hopf bifurcation is used to vary the oscillation of the system in steady and unsteady states. In order to perform these numerical simulations, we apply Grünwald–Letnikov tactics with Binomial coefficients to obtain the effects on the non-integer fractional degree and discrete time vallis system and plot the phase diagrams and phase portraits with the help of MATLAB and MAPLE packages.
AtıfScopus2WoS2OpenAlex2İncele - MakaleAçık Erişim2023Scopus SJRQ3Energy, exergy analysis and optimization of insulation thickness on buildings in a low-temperature district heating system
Terhan, Meryem; Abak, Sena Saliha
In the study, energy and exergy analysis of the buildings on a campus in Turkey are conducted by using actual operating data and taking measurements in the district heating system as a case study. The energy and exergy demands, losses that stem from all buildings are calculated according to average daily outdoor temperature data. Due to the high heat losses in the buildings, determining the optimal insulation thickness for the exterior wall should be investigated. Therefore, optimal insulation thicknesses, energy savings, fuel consumptions and payback periods of the insulation material on the exterior wall of the building are examined by using Life Cycle Assessment and P1–P2 method for natural gas. Optimal insulation thicknesses are calculated for different insulation materials such as XPS, glass wool, rock wool and EPS for the climatic regions (HDD=800–4250°C days). According to average exergy losses from the building components per unit area, the average total exergy loss is calculated as 2.39×10-2 kW/m2.year and 1.42×10-3 kW/m2 (5.92%) of this loss stems from the exterior walls, 1.93×10-3 kW/m2 (8.07%) from the floors, 7.37×10-4 kW/m2 (3.08%) from the roofs, 1.58×10-2 kW/m2 (65.99%) from the windows and doors, 4.04×10-3 kW/m2 (16.92%) from the ventilation with infiltration. Energy requirement values of the building are found between 2.68–25.70 kWh/m3 towards from the warmest to the coldest climatic region for the uninsulated wall. In the un-insulated state, fuel consumption varies between 1.93-18.48 m3/m2 from the warmest to the coldest region. The optimal insulation thickness values of the building’s exterior wall are calculated as between 2.3–10.0 cm according to different climatic regions. In-state of exterior wall insulation of 3 cm, fuel consumption decreases by 46.63%–53.46% compared to different insulation materials and climatic regions compared to the un-insulated state
AtıfScopus4WoS4OpenAlex6TR Dizin1
İncele - MakaleAçık Erişim2023Detection of buried objects with different material properties by ground penetrating radar (GPR) method; [Farklı malzeme özelliklerine sahip gömülü nesnelerin yer radarı (GPR) yöntemiyle tespit edilmesi]
Sari, Mahmut
GPR which permits the capture of high-resolution subterranean data, has developed into a key geophysical technique for determining the depth, geometry, boundaries, and volumes of buried shallow objects. In this study, the detectability of the location, size, and physical property parameters of buried objects with the ground radar method was reveal ed by creating a laboratory environment in real field conditions. For this purpose, a realistic laboratory environment with a depth and length of 5 m was created on the filled soil material at the test site, and buried objects with different material properties were placed. In addition, by adding sand material to the middle part of the soil fill material in the test area, its situation in different layers was tried to be examined. GPR data were collected on the models using the RAMAC CU II system and a 500 MHz center frequency shield antenna. After processing the data, reflected/scattered electromagnetic (EM) wave fields on the radargram of a profile perpendicular to the buried objects were examined. In this way, the positions, sizes, physical properties (types) of buried objects along with their depths and their situations in different layer environments have been revealed. According to the results, the peak width of hyperbolas and the sizes of buried objects were determined on the processed radargrams. The types of buried objects and their situations in different layer environments are clearly revealed. The scattered wave field amplitudes of the plastic pipe (A and C regions) from the reflection coefficients are substantially lower than the scattered wave field amplitudes of the iron pipe (B region) from the buried objects. It is thought that the strong reflections extending from the C region to the deep on the radar are caused by the lead blocks in the plastic pipe.
- Derleme MakaleAçık Erişim2024Scopus SJRQ3Taxation as a Policy Instrument For Social and Economic Effects of Gambling
Günay, Hamdi Furkan
The personal and social benefits and harms of gambling, which has been more accessible, diversified, and widespread thanks to global internet use, sometimes find their place in country agendas. Due to its characteristics, the gambling sector requires effective management through public policies. In this direction, governments determine sectoral policies in two ways: by choosing to ban gambling activities completely or by regulating the sector by legalizing certain types. In this context, taxes stand out as one of the policy tools adopted by many countries. This research aimed to evaluate the success of taxes–as a public policy tool–in controlling the social and economic effects of the gambling industry. Through a systematic review, the role and success of taxation against the social and economic influences of gambling have been evaluated in light of literature research and application examples. The present study revealed that taxes, as a policy tool, are insufficient and may lead to undesirable results in combating gambling, which has limited-positive contributions to the country's economies but harms society by creating severe addictions and other irreversible social costs.
AtıfScopus8OpenAlex8İncele - MakaleYalnız künye2023Scopus SJRQ1The Sr, Nd, Pb and Hf isotopes and crystallization conditions of the middle Eocene Daǧdibi Pluton in the eastern Sakarya Zone, Turkey
Sipahi, Ferkan; Gücer, Mehmet Ali; Dokuz, Abdurrahman; Yi, Keewook; Kaygusuz, Abdullah; Akaryall, Enver; Saydam Eker, Çiǧdem; Doruk, Cüneyt
Magmatic activity in the Sakarya Zone, an important segment of the Alpine orogenic belt, continues intermittently from the middle Carboniferous to Miocene. In this study, we provide geochronological and geochemical data from the Daǧdibi Pluton in the eastern Sakarya Zone to present some inferences on the source region and petrogenesis of the middle Eocene magmatism. U-Pb zircon geochronology from two granodiorite samples gives middle Eocene ages of 44.75 ± 0.92 and 45.01 ± 0.59 Ma. The pluton is mainly composed of K-feldspar, plagioclase, quartz, Mg-hornblende/actinolite, Fe-Ti oxides and small amounts of biotite, and secondary chlorite and epidote. Parental magma of the intrusive rocks has a high-K calc-alkaline affinity with metaluminous character. The oxygen fugacity values vary between -18 and -17. The rocks show slightly radiogenic 87Sr/86Sr(i) (0.704845-0.705726) ratios and μNdi values between -0.96 and +0.52. Pb-Pb isotope ratios are typical for those of the lower continental crust. μHf(i) values of the zircons range from 0.14 to 10.26. The geochemical and isotopic features of the pluton point to a parental magma derived from a depleted mantle that was metasomatized by fluids during previous subduction events. The volumetric abundances of the rock types are decreased as the silica content increase, implying that the fractional crystallization is the most important process during the formation of the present compositional range of the pluton. Amphibole, plagioclase and Fe-Ti oxides are the fractionated phases while K-feldspar is largely accumulated. In the light of the data presented above, slab breakoff is regarded as the geodynamic process responsible for the formation of the Daǧdibi Pluton in the middle Eocene.
AtıfScopus9WoS7OpenAlex10İncele - MakaleAçık Erişim2023Scopus SJRQ4Multiple parameter analysis for assessing and forecasting earthquake hazards in the Lake Van region, Turkey
Öztürk, Serkan; Alkan, Hamdi
A detailed spatial-temporal analysis of the seismic activity in and around the Lake Van region was performed using several seismotectonic parameters such as b-value, Z-value, relative intensity (RI), pattern informatics (PI), and Coulomb stress changes. Correlations between these parameters were analyzed to esti-mate and forecast potential seismic hazards in the Lake Van region. Particular attention was paid to the parts of the study region that exhibited smaller b-values, higher Z-values, and high-stress changes at the beginning of 2022 and to the locations of earthquake hotspots determined from the composite earthquake forecast map for 2022–2032, i.e., Muradiye, Çaldıran, Özalp, Erçek, Van city center and Gevaş covering the faults of Çaldıran, Yeniköşk, Erciş, Malazgirt and the fault zones of Saray and Van. To provide more accurate interpretations regarding potential earthquake occurrences in the near future, the seismotectonic parameters analyzed in the scope of this study were compared with the corresponding seismological, geological, geodetical, and geochemical variables reported in the literature. This comparison showed that, firstly, our results are consistent with those reported in previous studies, and, secondly, all these variables should be interpreted in combination to correctly assess strong earthquake hazards. Furthermore, this type of multiple-parameter analysis may be important for the description of seismic, tectonic, and structural characteristics of the nature of the crust. Our findings show that almost all seismotectonic parameters indicative of anomaly regions, i.e., lower b-values, higher Z-values, high-stress distribution, and hotspots, were recorded in the same parts of the study region. Thus, the anomaly regions detected at the beginning of 2019 and between 2022 and 2032 may be considered to be potential zones of future great earthquakes. To summarize, the correlations among these variables may provide accurate information for assessing and forecasting earthquake hazards in this region.
AtıfScopus11WoS9İncele - MakaleAçık Erişim2023Scopus SJRQ3The Effect of Organic Hawthorn (Crataegus tanacetifolia) Fruit Vinegar Supplement on Growth Performance, Carcass Characteristics and Some Serum Parameters in Broiler Chickens Subjected to Cyclic Heat Stress
Kaya, H.
Background: This study, it was aimed to determine the effects of adding organic hawthorn (Crataegus tanacetifolia) fruit vinegar (HFV) in different doses to the drinking water of broiler chickens reared under cyclic heat stress (CHS) on performance, carcass characteristics and some serum parameters. Methods: In the study, 300 one-day-old broiler chickens (Ross 308), after a 1-week acclimation period, were tested in two different (24 and 35◦C) ambient temperatures and three different HFV levels (0, 2 and 4 ml/L) according to the 2×3 factorial experimental design. Chicks were randomly distributed to 6 experimental groups with 5 replications, with 10 animals in each replication. The addition of organic HFV to the drinking water of broiler chickens subjected to CHS didn’t affect growth performance, carcass characteristics and visceral weight (P>0.05). Addition of HFV increased serum FFA level, decreased serum MDA, HDL and TAG levels (p<0.05) and did not affect other serum parameters (P>0.05) in CHS-treated groups. Result: As a result, it was concluded that the addition of HFV to the drinking water of broiler chickens exposed to cyclic heat stress did not have any negative effect on growth performance, carcass characteristics and visceral weights, but it could be beneficial in preventing lipid peroxidation.
AtıfScopus4WoS3OpenAlex3İncele - MakaleYalnız künye2024Scopus SJRQ2Reliability generalization meta-analysis of the food neophobia scale: Turkish sample
Polat, Eray; Çalişkan, Serkan
Purpose: The Food Neophobia Scale developed by Pliner and Hobden (1992) has been widely utilized globally and in Turkey for many years to measure people's fear of new foods. This study aims to determine the mean value by conducting a reliability generalization meta-analysis for the reported reliability coefficients of individual studies in Turkey's tourism field, which employed Pliner and Hobden's scale to investigate food neophobia. Additionally, this study explores variations in the mean value among subgroups. Methods: A reliability generalization meta-analysis based on a random-effects model was conducted to examine the heterogeneity of reliability coefficients in the study, along with heterogeneity analyses and moderator analyses. Results: Based on the analysis of 48 independent samples (N= 23306), the transformed mean Cronbach's alpha value was estimated to be .827 (95% CI [.796-.853]) and found to be significant. The Q-test and I2 values reveal significant heterogeneity between alpha coefficients, indicating a notable variation in the measurement reliability across samples. Moderator analyses using analog to the ANOVA and meta-regression analyses showed that reliability coefficients differed according to the variables of publication type, sample type, and proportion of women in the sample. Implications: The results offer valuable insight for researchers seeking to select appropriate scales for investigating food neophobia.
AtıfScopus1İncele - MakaleYalnız künye2023Scopus SJRQ1Increased heat tolerance and transcriptome analysis of Salmonella enterica Enteritidis PT 30 heat-shocked at 42 ℃
Qiu, Yan; Ozturk, Samet; Cui, Xinyao; Qin, Wen; Wu, Qingping; Liu, Shuxiang
In this study, we compared the heat tolerance parameter (D65℃) values of Salmonella enterica serovar Enteritidis PT 30 (S. Enteritidis ) heat adapted at different degrees (at 42 ℃ for 20–180 min) and cultivated using two methods. The treated group with the highest D65℃ value (LP-42 ℃-60 min) and the untreated groups (Control-TSB and Control-TSA) were subjected to transcriptome analysis. Heat-adaptation increased the D65℃ values of S. Enteritidis by 24.5–60.8%. The D65℃ values of the LP-42 ℃-60 min group (1.85 ± 0.13 min, 7.7% higher) was comparable to that of the Control-TSA. A total of 483 up- and 443 downregulated genes of S. enteritidis were identified in the LP-42 ℃-60 min group (log2fold change > 1, adjusted p-value < 0.05). Among these genes, 5 co-expressed and 15 differentially expressed genes in the LP-42 ℃-60 min and Control-TSA grops possibly contributed to the high D65℃ values of S. Enteritidis. The Rpo regulon was involved in the heat adaptation of S. Enteritidis, as evidenced by the significant upregulation of rpoS, rpoN, and rpoE. KEGG enrichment pathways, such as biosynthesis of secondary metabolites, tricarboxylic acid, and ribosomes were identified and mapped to reveal the molecular mechanisms of S. enteritidis during heat adaptation. This study quantified the enhanced heat tolerance of S. Enteritidis heat adapted at different degrees of heat-adaptation. The results of this study may serve as a basis for elucidating the molecular mechanisms underlying the enhanced heat tolerance at the transcriptome level.
AtıfScopus9WoS9OpenAlex10İncele - MakaleAçık Erişim2023Scopus SJRQ2On the solution of random linear difference equations with Laplace transform method
Şişman, Şeyma; Merdan, Mehmet
In this study, Laplace transformation, which is very important for solutions to initial value problems, is examined. To solve the initial value problem of a discrete-time equation, Laplace implements the conversion method. Here, Laplace transformation is used to obtain an approach to the solutions of random difference equations formed by randomizing components of deterministic difference equations. For random behavior of linear difference equations under random effects, uniform, geometric, binomial, Poisson, and Bernouilli distributions are used, and approximate expected value, variance, standard deviation, and confidence interval of equations obtained by Laplace transformation are calculated. The results were obtained through the Maple package program.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2023Scopus SJRQ2Adsorptive removal of Cr(VI) and Cu(II) ions from aqueous solutions by a natural moss
Ozeken, Sengul Tugba; Ozdes, Duygu; Duran, Celal
The aim of the present research is to develop a new, fast, and easily applicable adsorption method for the removal of hazardous Cr(VI) and Cu(II) ions from the polluted industrial wastewater by using Racomitrium ericoides (Brid.) Brid. (REB), a type of moss. Although there are studies in the literature in which different moss species were used for the removal of heavy metals (HMs), REB was used for the first time in this study. Adsorption experiments were carried out through a batch system. The impact of significant experimental parameters showed that the optimum values of initial pH were 2.0 for Cr(VI) retention and 5.0 for Cu(II), and 360 min was selected as the optimum contact time for both HMs. An artificial neural network (ANN) model was applied to create a predictive model for the uptake efficiency of HMs. Adsorption kinetics of Cr(VI) and Cu(II) ions followed the pseudo-second order model. The maximum adsorption capacities of REB identified through the Langmuir model were 41.2 mg g-1 for Cr(VI) and 22.7 mg g-1 for Cu(II) ions. The results of the study demonstrated that REB can be utilized as an abundant, low-cost, and effective adsorbent in removal of HMs from aqueous solutions.
AtıfScopus14WoS11İncele - Kitap BölümüYalnız künye2024Conceptual Framework and Problem Visibility: Conceptual Explanations for the Economics of Climate Change
Vural, Selvi
In the realm of economics, conceptual explanations serve as the foundation for understanding the complexities of market dynamics, resource allocation, and socio- economic phenomena. These explanations elucidate the theoretical frameworks that underpin economic models, guiding policymakers, analysts, and individuals in comprehending the intricate interplay of factors shaping economic outcomes. Conceptual explanations delve into fundamental concepts such as supply and demand, elasticity, production functions, utility theory, and market structures, offering insights into how these principles interact to influence economic behavior and outcomes. By providing a conceptual roadmap, these explanations facilitate informed decision- making, foster critical thinking, and contribute to the advancement of economic theory and practice.
- Kitap BölümüAçık Erişim2024Evaluation of the Computerized Accounting Information System (CAIS) in Smart Healthcare Systems: Examples of Turkey
Selimoğlu, Seval Kardeş; Altunel, Mehtap; Yeşilçelebi, Gül
The health sector has a significant impact on human life. Digital technologies such as blockchain, artificial intelligence, big data, machine learning, and the Internet of Things have had an impact on many economies and professions. One of them is the field of accounting and the accounting profession. Since the existence of an effective accounting system is important to the success of organizations, accounting practices come to the fore at this point. Technology benefits are listed in many areas in the health sector, such as sharing insurance claims between parties with blockchain technology, machine learning and data analysis for data privacy, data mining, and detection of fraud. This study, besides explaining the concept of medical accounting in the health sector, aims to discuss the technological developments and benefits in the field of accounting in the health sector within the framework of cost accounting, management accounting, and fraud prevention.
- MakaleAçık Erişim2023Scopus SJRQ2Geographic information system approach in evaluating the geotechnical properties of soils: A case study of Oymaağaç in Kayseri; [Zeminlerin geoteknik özelliklerinin değerlendirilmesinde coğrafi bilgi sistemi yaklaşımı: Kayseri Oymaağaç örneği]
Acar, Mehmet Cemal; Kaya, Dilek
Kayseri, the ninth biggest city in Turkey, the regions opened to the ongoing construction of residential areas are expanding rapidly parallel to population growth. Soil improvement works are carried out in areas with the poor bearing capacity of foundations and in regions that are not suitable for safe construction. This event causes severe economic losses in urban development. This study proposes a (Geographic Information System) GIS-based approach to comprehensively understand the research area's underground conditions, predetermine the zones opened for construction by considering the parameters affecting the foundation of the buildings, and create an informative geotechnical model with visualization technology. For an exemplary application, a database was created with ArcGIS in the Kayseri Oymaağaç location, and geological and geotechnical data were combined. The soil properties of this one million five hundred thousand square meter area opened for new settlement were analyzed in a GIS environment. The variation of SPT-N values measured in 60 boreholes in the field with depth, soil types, groundwater levels, and Vs data were used to combine the data, and related maps were drawn. Then, maps of the liquefaction of the soil in a possible earthquake and visual maps showing the bearing capacity of the foundations were created. This study will offer the best and most reliable land-use scenarios and in situ soil properties to decision-makers such as engineers, government agencies and disaster management. It will contribute to making accurate and fast decisions in urban planning. In addition, it will also be able to use as a tool for risk management in emergencies.
AtıfScopus2WoS2OpenAlex2TR Dizin2İncele - MakaleYalnız künye2023Scopus SJRQ4ON SOLUTION OF BG-VOLTERRA INTEGRAL EQUATIONS
Güngör, N.
In this study, we center upon obtaining the solution of linear bigeometric Volterra integral equations of the second kind in the sense of bigeometric calculus. The method of successive substitutions and resolvent kernel method are applied for solving the linear bigeometric Volterra integral equations of the second kind by using the concept of bigeometric integral. The necessary conditions for the bigeometric continuity and the uniqueness of the solution of linear bigeometric Volterra integral equations of the second kind are given in these methods. Finally, some numerical examples are presented to explain the procedure of the method of successive substitutions and resolvent kernel method
- MakaleAçık Erişim2024Scopus SJRQ2Social Work Graduates as Youth Not in Education, Employment, or Training (NEET) in Türkiye: An Intersectional Analysis
Afyonoğlu, Meliha Funda; Yiğit, Rabia Ruveyda; Mısırlı, Gökçe Nur; Bilgin, Özkan
This research investigates the experiences of social work graduates as youth who are not in employment, education, or training (NEET) by employing an intersectional perspective. In-depth interviews were conducted with 21 social work graduates who are unemployed for at least a year. The findings encompass three key themes: being NEET, the reasons for being NEET, and solutions proposed by social work graduates as NEET. The findings evaluate the shared experiences among participants while endeavoring to elucidate how these experiences diverge concerning various social categories. From an intersectional perspective, the results expose disparities in the NEET experience, considering factors such as gender, marital status, being a parent, class, social capital, geographical location, and societal perceptions. The research is expected to contribute to the body of knowledge concerning educated NEETs and the unique strength of it lies in the absence of previous investigations pertaining to NEETs as social work graduates. It is advised that individual and structural factors should be considered in analyzing the experience of being NEET and that micro, meso, and macro social work interventions should be developed in terms of these factors. Furthermore, future research endeavors can focus on evaluating the efficacy of interventions and conducting comprehensive mixed-method studies.
AtıfScopus8WoS7OpenAlex10İncele - MakaleYayıncıda açık erişim2022Scopus SJRQ2Analyzing and Predicting Spatiotemporal Urban Sprawl in Eskişehir Using Remote Sensing Data
Küçük Matcı, Dilek; Çömert, Resul; Avdan, Uğur
Urban areas of major cities in developing countries are expanding rapidly due to rapid population growth and industrialization. Determining the reasons for rapid urbanization and the amount of urban area that will be needed in the future is important for the planned growth of these cities. In this study, the LU/LC change of Eskisehir city center that has a rapid rate of urbanization and industrialization in Turkey between 1984 and 2020 was determined. Then, the area needed for urban and industrial areas in 2030 was investigated using the Cullullar Automata–Markov Chain (CA–MC) hybrid model simulation. Each year's LU/LC map was produced with over 80% kappa accuracies performing the pixel-based Random Forest (RF) algorithm for change analysis. In the change analysis made between 1984 and 2020, it was determined that there was a change of 117% in the urban area and 977% in the industrial area. The prediction was made for the validation of the CA–MC model from the period 2000–2010 to 2020. When compared with the 2020 LU/LC map, the model success was obtained as 0.84, 0.87, and 0.87 in the Kstandard, Klocation, and Kno Kappa metrics, respectively. By using the 2010–2020 periods in the estimation of 2030, it has been observed that the urban and industrial area will increase by 22.95%; therefore, there will be decreases in agriculture and other natural areas as in previous years.
AtıfScopus4WoS4OpenAlex5İncele - MakaleAçık Erişim2023Scopus SJRQ1Predicting and Mapping Dominant Height of Oriental Beech Stands Using Environmental Variables in Sinop, Northern Turkey
Yener, Ismet; Guvendi, Engin
The dominant height of forest stands (SDH) is an essential indicator of site productivity in operational forest management. It refers to the capacity of a particular site to support stand growth. Sites with taller dominant trees are typically more productive and may be more suitable for certain management practices. The present study investigated the relationship between the dominant height of oriental beech stands and numerous environmental variables, including physiographic, climatic, and edaphic attributes. We developed models and generated maps of SDH using multilinear regression (MLR) and regression tree (RT) techniques based on environmental variables. With this aim, the total height, diameter at breast height, and age of sample trees were measured on 222 sample plots. Additionally, topsoil samples (0–20 cm) were collected from each plot to analyze the physical and chemical soil properties. The statistical results showed that latitude, elevation, mean annual maximum temperature, and several soil attributes (i.e., bulk density, field capacity, organic carbon, and pH) were significantly correlated with the SDH. The RT model outperformed the MLR model, explaining 57% of the variation in the SDH with an RMSE of 2.37 m. The maps generated by both models clearly indicated an increasing trend in the SDH from north to south, suggesting that elevation above sea level is a driving factor shaping forest canopy height. The assessments, models, and maps provided by this study can be used by forest planners and land managers, as there is no reliable data on site productivity in the studied region.
AtıfScopus1İncele - MakaleYalnız künye2023Scopus SJRQ1Behaviors of a group of university students during an earthquake drill and their compliance with the emergency disaster plan: An action research
Parlak, Lütfiye; Kaya, Nahsan; Duru, Pınar; Örsal, Özlem
Approximately 60% of the casualties due to disasters occur due to earthquakes. This study aimed to discover and develop the strengths and weaknesses of a group of university students during a possible earthquake, their behavior towards evacuation and assembly areas, and their adaptation to the emergency disaster plan. The research was carried out between May–June 2022 as “liberating/developing/critical action research,” a subtype of action research, one of the qualitative research methods. Thirty-five students participated in the first drill, and 31 participated in the second. The study data were collected through “observations” made with the installed cameras and “focus group interviews” with the students through semi-structured interview forms. An average of 3.25 behaviors expected to be observed were displayed as expected by the students during the first drill. The average of the behaviors displayed during the second drill increased to 5.18. As a result of the synthesis of the qualitative data obtained from the focus group interviews, it was seen that two main themes were formed: “Drill management” and “Disaster experience.” The main theme of drill management was “Drill moment,” “Evacuation moment,” and “Drill experience” analytical themes. In contrast, the main theme of disaster experience was “Disaster cycle,” “Disaster perception,” “Disaster awareness,” and “Earthquake experience.” After the second drill, it was evaluated that the problems identified in the first were eliminated. The students' adaptation to the emergency disaster plan increased by re-applying to the observation and focus group interviews.
AtıfScopus8WoS6OpenAlex9İncele
