Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(22)
- Kulakaç, Nurşen(13)
- Tonkaz, Duygu Erkal(9)
- Tonkaz, Mehmet(9)
- Baltaci, Cemalettin(8)
- Vural, Selvi(8)
- Yılmaz, Coşkun(7)
- Bayrakdaroglu, Serdar(6)
- Günen, Mehmet Akif(6)
- Karimullah, Suud Sarim(6)
- Türkkan, Tuğba(6)
- Şimşek, Ahmet Bahadır(6)
- Akyürek, Suat(5)
- Anaç, Halil(5)
- Avcı, İbrahim(5)
- Beder, Murat(5)
- Doğan, Melike Demir(5)
- Emirza, Elif Güzide(5)
- Gönan, Yavuz(5)
- Merddan, Kurtuluş(5)
- Tonkaz, Gokhan(5)
- Zaman, Tolga(5)
- Akar, Zeynep(4)
- Akdemir, Enes(4)
- Akçay, Serhatcan Berk(4)
- Altan, Aytaç(4)
- Anıl, Berna(4)
- Aydin, Aydanur(4)
- Bingol, Ozkan(4)
- Bozkurt, Ferhat(4)
- Ceylan, Halil Ibrahim(4)
- Dogan, Ramazan Ozgur(4)
- Doğan, Hasan(4)
- Gedikli, Eyup(4)
- Günay, Hamdi Furkan(4)
- Kaygusuz, Abdullah(4)
- Kayhan, Recep Fatih(4)
- Kenek, Gökhan(4)
- Kurt, Kemal(4)
- Köse, Aslı(4)
Yayınlar
- MakaleAçık Erişim2024Scopus SJRQ1Deep eutectic solvent as plasticizing agent for the zein based films
Yilmaz, Mustafa Tahsin; Kul, Ebubekir; Saricaoglu, Furkan Turker; Odabas, Halil Ibrahim; Taylan, Osman; Dertli, Enes
This study explores, the impacts of incorporating of deep eutectic solvent (DES) as plasticizer on the characteristics of zein films. Investigation focused on examining the mechanical, thermal, surface, and microstructural properties of zein films that were plasticized using DES. The findings of the study revealed that by adding DES to zein films, there was an observed improvement in transparency. Additionally, it was observed that up to a 20% addition of DES led to a reduction in water vapor permeability (WVP). However, beyond this level, the WVP increased as the surface hydrophobicity decreased. The films that were plasticized with DES showed higher tensile and burst strength values than control. However, there was a decrease in the elongation at break and burst distance, except for the film containing 30% DES. The addition of DES as plasticizer resulted in smoother surface morphology compared to the control, and all films revealed homogeneous and non-porous surface and cross-section microstructure. The films plasticized with DES displayed three different thermal degradation temperatures resulting in higher thermal stability. The FT-IR spectrum of films showed similar backbone structure including Amide I, II and III bands. However, 5% DES plasticized film showed different secondary structural peaks of Amide I band due to lower α-helix and higher β-sheet and random coil content. The findings of this investigation indicate that the employment of DES as plasticizer in biodegradable polymer films can yield enhanced mechanical and barrier characteristics compared to conventional plasticizers, thus demonstrating its potential for effective use.
AtıfScopus56WoS50OpenAlex55
İncele - Kitap BölümüAçık Erişim2024Integrating sustainability into HR practices using the best worst method
Şimşek, Tugçe; Şimşek, Ahmet Bahadir
This chapter delves into the intricate task of integrating sustainability principles into human resources practices using analytical methods as a guiding framework. It unveils the potential for harmonizing various sustainability aspects within HR, moving beyond theory to provide a practical roadmap. Analytical techniques enable decision makers to navigate between conflicting interests and chart a path towards common understanding and workable strategies. By a hypothetical case study, this chapter illustrates how analytical tools illuminate the way forward, promoting alignment with ethical, environmental, and social responsibility goals. This journey underscores the pivotal role of analytical methods in resolving conflicts among decision-makers, facilitating consensus-building to make ethical HR decisions. This chapter signifies the transformative potential of integrating sustainability into HR, propelling organizations toward a future where HR practices are not only functional but also ethically grounded, ensuring the welfare of employees, the community, and the planet.
AtıfScopus1İncele - MakaleAçık Erişim2024Scopus SJRQ3The relationship between body image and sexual satisfaction in women who have undergone hysterectomy
Gökçe, Elmas; Karakaş, Sevda
SUMMARY OBJECTIVE: This study aims to examine the relationship between body image and the level of sexual satisfaction in women who have undergone a hysterectomy. METHODS: This descriptive study utilized a relational screening model. Conducted between June 2023 and March 2024, the study included a total of 300 sexually active women who had undergone a hysterectomy 6 months prior. Data were collected using a personal information form, the Golombok-Rust Sexual Satisfaction Scale, and the Body Image Scale through face-to-face interviews lasting approximately 20–30 min. RESULTS: The average age of the participating women was 44.4±10.55 years. Of the participants, 96.7% were married and 42.4% had entered menopause. The average score on the Body Image Scale was 81.2±3.8, and the average score on the Golombok-Rust Sexual Satisfaction Scale was 33.0±15.1. A positive significant relationship was found between body image and sexual satisfaction (p<0.05). There was also a statistically significant positive relationship between the total scores on the Body Image Scale and the Golombok-Rust Sexual Satisfaction Scale with age and frequency of sexual intercourse (p=0.049, p<0.001, p<0.001, p=0.047, and p=0.014). It was determined that as the age and frequency of sexual intercourse increased, the levels of body image and sexual satisfaction also increased. CONCLUSION: Our study found that women’s self-image is negatively affected, and their level of sexual satisfaction decreases following a hysterectomy.
AtıfScopus2WoS2OpenAlex2
İncele - MakaleAçık Erişim2024Scopus SJRQ2Effects of Swedish Massage at Different Times of the Day on Dynamic and Static Balance in Taekwondo Athletes
Bayrakdaroğlu, Serdar; Eken, Özgür; Bayer, Ramazan; Yagin, Fatma Hilal; Kızılet, Tuba; Kayhan, Recep Fatih; Ardigò, Luca Paolo
The purpose of this study is to investigate the impact of different durations of Swedish massage on the static and dynamic balance at different times of the day in taekwondo athletes. Twelve taekwondo athletes who had been practicing on a regular basis for more than 5 years participated in this study. Taekwondo athletes completed static and dynamic balance tests either after a no-massage protocol (NMP), a five-minute massage protocol (5MMP), a ten-minute massage protocol (10MMP), or a fifteen-minute massage protocol (15MMP) two times a day in the morning (08:00–12:00) and in the evening (16:00–20:00), on non-consecutive days. The findings of this study suggest that the duration of the massage has a discernible impact on dynamic balance, particularly with regard to the right foot. Taekwondo athletes who received a 10MMP or 15MMP displayed significantly improved dynamic balance compared to those in the NMP. Importantly, these improvements were independent of the time of day when the massages were administered. It underscores the potential benefits of incorporating short-duration Swedish massages into taekwondo athletes’ pre-competition routines to enhance dynamic balance. These findings highlight the potential benefits of incorporating short-duration Swedish massages into taekwondo athletes’ pre-competition routines to enhance dynamic balance, a critical component of their performance, regardless of the time of day.
AtıfScopus6WoS4OpenAlex7İncele - MakaleAçık Erişim2024Scopus SJRQ3Effect of Soil-Structure Interaction on Story Acceleration Response of a High-Rise Building
Araz, O.; Ozturk, K.F.; Cakir, T.
In this paper, the effect of soil–structure interaction (SSI) on the story acceleration response of a high-rise building due to different earthquakes is investigated. To determine the dynamic response of a 40-story building considering SSI, six different foundation soil conditions and ten different earthquake records are considered. The results show that the SSI effect on the story acceleration response of the high-rise building resting on relatively soft soil types is of critical importance.
AtıfScopus13WoS10OpenAlex12İncele - MakaleYalnız künye2024Scopus SJRQ2Innovative Polygonal Trend Analysis (IPTA) in detecting the seasonal trend behavior of statistically downscaled precipitation for the Eastern Black Sea Basin of Turkey
Nacar, Sinan; Şan, Murat; Kankal, Murat; Okkan, Umut
This study compares projected and past seasonal precipitation trends in the Eastern Black Sea Basin, Turkey. Historical data from twelve stations representing the basin during 1981–2010 was used, while statistically downscaled data from two representative concentration pathway scenarios (RCP4.5 and RCP8.5) outputs of the GFDL-ESM2M general circulation model were utilized for 2021–2050. To determine the seasonal trend behaviors of precipitation variables and transitions between consecutive months, the Innovative Polygon Trend Analysis (IPTA) was implemented. Furthermore, the star concept was employed to illustrate the changing sizes between consecutive periods. Both scenarios showed considerable summer and autumn declines at almost all locations, with low seasonal precipitation variability. These scenarios indicated January to be the important month for trend shift, except for Rize, Pazar, and Hopa stations. The formation of several polygons, polygons intersecting, and polygons not forming on the global regression line show that the hydro-climatic cycle might be chaotic.
AtıfScopus12WoS12OpenAlex16İncele - MakaleAçık Erişim2024Scopus SJRQ3The potential toxic element contents of Berriasian–Aptian carbonate rocks: distribution of elements in dolomite and limestone and possible sources (Gümüşhane/NE Türkiye)
Eker, Çiğdem Saydam; Arı, Uğur Volkan
The aim of this study is to determine the potential toxic element (PTE) content linked to the geochemical features of Berriasian–Aptian carbonate rocks commonly outcropping in Gümüşhane, along with the degree of pollution and possible sources of these toxic elements, and to compare dolomite with limestone in terms of toxic metal abundance. In the field, dolomite and limestone samples were collected by measuring stratigraphic sections around Yuvacık, Ünlüpınar, Çukutbaşı, Bağlarbaşı, Mescitli and Gülaçar (Gümüşhane). The samples were analyzed using inductively coupled plasma mass spectroscopy (ICP-MS). The mean values for Mo, Cu, Pb, Zn, Ni, As, and Co were 3.1, 23.8, 7.1, 14.5, 13.5, 30.9, and 8 mg/kg in Yuvacık; 6, 2.3, 1.1, 3.5, 8.1, 12.3 and 2.5 mg/kg in Ünlüpınar; 17.9, 1.8, 1.5, 8.6, 7.9, 13.9 and 1.7 mg/kg in Çukutbaşı; 3.7, 6.5, 31.7, 82.7, 9.5, 32.0 and 1.9 mg/kg in Bağlarbaşı; 0.7, 0.7, 7.1, 21.3, 2.6, 11.8 and 0.7 mg/kg in Mescitli; and 1.2, 1.1, 2.4, 5.2, 1.3, 4.0 and 0.2 mg/kg in Gülaçar, respectively. According to geochemical pollution parameters [geo-accumulation (Igeo), pollution index (Pi), and pollution load index (Pln)], the rocks were generally significantly polluted by Mo and As, without notable pollution by the other elements. Limestone samples from the Yuvacık, Ünlüpınar, and Çukutbaşı areas were more polluted in terms of Mo and As compared to dolomites. This pollution in Yuvacık and Ünlüpınar was identified to have geogenic sources (Pb–Zn–Cu mineralization) and in Çukutbaşı was identified to have lithogenic sources. Dolomites from the Bağlarbaşı area were more polluted in terms of As and less polluted in terms of Mo compared to limestones. In the Mescitli location, both dolomites and limestones were occasionally polluted in terms of As, while limestones were polluted in terms of Mo. In these two areas, the sources of As and Mo are geogenic (Pb–Zn mineralization), In Gülaçar, dolomites were more polluted in terms of Mo and less polluted in terms of As compared to limestones. In this locality, As and Mo are thought to have a geogenic source (Pb–Zn–Cu mineralization).
AtıfScopus6WoS6OpenAlex4İncele - MakaleAçık Erişim2024ON LOCAL GOVERNMENTS OMBUDSMAN IN TURKEY: A COMPARATIVE ANALYSIS WITH THE LOCAL GOVERNMENTS OMBUDSMAN IN UK AND ITALY; [SOBRE O OMBUDSMAN DOS GOVERNOS LOCAIS NA TURQUIA: UMA ANÁLISE COMPARATIVA COM O OMBUDSMAN DOS GOVERNOS LOCAIS NO REINO UNIDO E NA ITÁLIA]; [SOBRE EL OMBUDSMAN DE LOS GOBIERNOS LOCALES EN TURQUÍA: UN ANÁLISIS COMPARATIVO CON EL OMBUDSMAN DE LOS GOBIERNOS LOCALES EN EL REINO UNIDO E ITALIA]
Doğan, Kadir Caner; Parlak, Bekir
Objective: The Ombudsman is essentially an independent, national-level institution that operates in response to complaints from citizens in order to steer public administrations away from bad administrative practices and behavior. However, it is impossible for an ombudsman with such a broad mandate at the national level to deal with all administrative complaints within the state. Therefore, in order to get more efficiency from the national Ombudsman, it has been divided into different sub-types. Theoretical Framework: One of these is the Ombudsman for local governmentrs, which deals only with complaints from local administrations. Although there is a national ombudsman in Turkey, there is no ombudsman specialized in local governments. Method: This study aims to make some suggestions for the Ombudsman for local governments envisaged to be established in Turkey in the future by analyzing the local governments ombudsman offices in the UK and Italy in terms of their structural-institutional and functional aspects. In this context, the study, with a comparative approach, provides suggestions for the basic aspects, qualities and characteristics of the Turkish local government ombudsman and, thus, for its structural-institutional and functional aspects. The method of the research is literature review. Results and Discussion: According to the results of this research; Establishing an ombudsman for local governments in Turkey by law, cooperating with other ombudsmen in the vicinity, examining and correcting the mismanagement and bad behavior of local governments upon public demand, ensuring easy and cheap access, fulfilling their duties, and quickly and systematically addressing the faults of local governments. Warning, making suggestions, preparing reports and then reporting the situation to local decision-making boards and the public will be effective in providing public services more effectively and efficiently and strengthening local democracy. Originality/value: In the study, original suggestions are made for local government ombudsman in Turkey, based on the examples of UK and Italy.
AtıfScopus1İncele - MakaleAçık Erişim2024Scopus SJRQ2A new study on the Newell-Whitehead-Segel equation with Caputo-Fabrizio fractional derivative
Alkan, Aslı; Anaç, Halil
In this research, we propose a new numerical method that combines with the Caputo-Fabrizio Elzaki transform and the q-homotopy analysis transform method. This work aims to analyze the Caputo-Fabrizio fractional Newell-Whitehead-Segel (NWS) equation utilizing the Caputo-Fabrizio q-Elzaki homotopy analysis transform method. The Newell-Whitehead-Segel equation is a partial differential equation employed for modeling the dynamics of reaction-diffusion systems, specifically in the realm of pattern generation in biological and chemical systems. A convergence analysis of the proposed method was performed. Two-dimensional and three-dimensional graphs of the solutions have been drawn with the Maple software. It is seen that the resulting proposed method is more powerful and effective than the Aboodh transform homotopy perturbation method and conformable Laplace decomposition method in the results.
AtıfScopus5WoS3OpenAlex10İncele - Derleme MakaleAçık Erişim2024Scopus SJRQ3The Effect of Acupressure on Fatigue in Cancer Patients: A Meta-analysis Study
Doğan, Melike Demir
Objectives: This meta-analysis study was conducted to determine how acupressure affects fatigue in cancer patients. Materials and Methods: Randomised controlled clinical trials were conducted using the keywords ‘acupressure and fatigue’ on Google Scholar, PubMed, and ISI Web of Sciences databases. Cochran’s Q test statistics and I2 test statistics were used to test the presence of heterogeneity. The random-effect meta-analysis model was used according to the results of the test for heterogeneity. Hedge’s g test statistics were used to determine the joint effect between acupressure and control groups in the meta-analysis study. Results: In this meta-analysis study, 409 patients from the acupressure group and 403 patients from the control group were included. When calculating the average standardised difference value of the acupressure versus the control group, it was determined that acupressure decreased the fatigue score in a statistically significant way. Conclusion: Acupressure is an effective approach to alleviate cancer-related fatigue.
AtıfScopus5WoS5OpenAlex5İncele - MakaleAçık Erişim2024Scopus SJRQ2Potential geographic distribution and habitat utilization of Lacerta viridis (Squamata: Lacertidae) in northern Türkiye
Şahin, Mehmet Kürşat; Kurnaz, Muammer
The genus Lacerta, particularly the green lizard (Lacerta viridis), is a significant lizard group in the Western Palearctic. This study aims to predict its geographic range in Northern Türkiye and identify key habitat types based on the CORINE Land Cover classification. Occurrence records, gathered from published sources and on-site investigations, were analyzed using a 30 arc-second resolution layer and bioclimatic parameters from WorldClim v.2.1. The distribution was modeled in kuenm, and habitat use was assessed with generalized linear models. Results show that the green lizard’s occurrence is strongly influenced by precipitation dynamics and it prefers areas with little to no shade. These findings highlight the importance of precipitation in determining the species’ distribution and suggest further research on local dynamics for effective conservation.
AtıfScopus2WoS1OpenAlex2İncele - MakaleYalnız künye2024Scopus SJRQ4Vinegar production from different cherry laurel fruits and investigation of some of their physicochemical properties; [Essigherstellung aus verschiedenen Kirschlorbeerfrüchten und Untersuchung einiger ihrer physikochemischen Eigenschaften]
Baltaci, Cemalettin; Yilmaz, Kubra; Ozturk, Seyda; Karpuz, Omer
In this study, seven types of traditional cherry laurel fruit vinegars (CLFV) belonging to three different species were produced. Vinegars, including those produced during the study and supplied from the market, were analyzed for total acidity, volatile acidity and non-volatile acidity, pH, ash, oxidation number, iodine number, ester, mineral substan-ce, alcohol, total solids, and total sugar-free solids. Analyses and the ranges of the results that were found in vinegar samples were as: Acidity percentage (as acetic acid) 1.68–4.13 %, volatile acidity (as acetic acid) 5.70–18.27 g/L, non-volatile acidity (as tartaric acid) 3.31–36.10 g/L, alcohol percentage 0.01–0.48, pH 2.24–3.57, total sugar 6.54–283.56 g/L, total solids 22.01–486.56 g/L, total sugar-free solids 14.11–217.73 g/L, ash 0.22–3.84 g/L, ester 16.80–61.14, oxidation number 389.60–394.05 and iodine number 35.20–386.88. For the color analysis, the values were found to be between 10.91 and 25.79 for L*, 5.15 and 15.08 for a*, between –4.83 and 8.72 for b*, between 3.54 and 16.83 for E*. Based on their physicochemical properties, the vinegars numbered N4, N5, N6, N8, and N9 are considered suitable for vinegar production compared to the samples numbered N7 and N10. The raw material contents of N7 and N10 vinegars differ from the others and inhibit the development of acidity. Additionally, it has been determined that the physicochemical properties of N4, N5, N6, N8, and N9 vinegar samples are superior to those of apple and grape vinegars. According to the study re-sult, cherry laurel fruits (CLF) are suitable for natural vinegar production under optimum conditions, and further field studies should be carried out to apply these findings at the industrial level.
AtıfScopus5WoS5İncele - Derleme MakaleAçık Erişim2024Scopus SJRQ3Effect of Different Stabilizers and Rebaudioside A (Reb A) Sweetener on Quality Characteristics of Low-Calorie Orange Marmalade
Öztürk, Şeyda; Baltacı, Cemalettin
Low-calorie orange marmalade was produced using sugar and reb A (0.08%) or reb A-sugar free recipes with pectin (1%) and agar agar (AA) (1%) stabilizers. The physical, chemical, and sensory properties of the marmalades were evaluated. AA stabilizers increased the viscosity of the marmalades compared to pectin, but they did not affect samples with reb A. Low-calorie samples had higher L* and b* values and lower a* values than sugar-containing samples. Total sugar content in reb A samples was 8.30 to 9.28 g/100 g, and it was lower in agar samples produced in parallel with pectin. The hydroxymethyl furfural (HMF) value was lower in sugar-free recipes (3.03 to 3.62) than in sugar-containing samples. Pectin-reb A samples had favorable taste, while AA-reb A samples favored consistency among reb A-containing samples.
AtıfScopus2WoS1OpenAlex3İncele - MakaleAçık Erişim2024Scopus SJRQ1Effect of White-Portland cement containing micro and nano silica on the mechanical and freeze-thaw properties of self compacting mortars
Etli, Serkan; Yılmaz, Tekin; Hansu, Osman
This study concentrated to investigate the influences of white-Portland cement (W-PC) containing silica fume (SF: micro-silica (µSi) and nano-silica (nSi)) as replacement (2–4 wt%) on mechanical (strength and durability), physical and microstructural behaviors of self-compacting mortars (SCMs) fabricated at 0.48–0.63 w/b ratios. In keeping with these purposes, besides of carrying out the workability (mini-slump flow: M−SF and V-funnel: V-F) experiments of SCMs, the mechanical and microstructural tests implemented were: unconfined compressive strength (UCS), flexural strength (FS), freeze–thaw (F-T) and scanning electron microscope (SEM) analysis. The outcomes displayed that, in comparison with the control, replacing W-PC by SF (particularly nSi) enhanced the UCS and FS, resisted against F-T durability by lowering the strength losses in UCS and FS. The ameliorated microstructure resulting in a reduction in the number and/or a narrowing in the size of micro-cracks and pores contributed to generate a more compact and consolidated SCM structure for the improving of strength and durability due of pore-filling effect and superior pozzolanic characteristics of µSi and especially nSi, this in turn reduced the permeability of SCM, which has a significant effect on the strength and durability behaviors of the SCM.
AtıfScopus16WoS16OpenAlex19İncele - MakaleYalnız künye2024Scopus SJRQ1Caprock integrity at Çanakkale-Tuzla hydrothermal system inferred from magnetotelluric modeling using particle swarm optimization
Büyük, Ersin; Karaman, Abdullah
The impermeable caprock within a geothermal system serves the purpose of effectively sealing the reservoir, resulting in an elevation of both pressure and temperature. This sealing mechanism plays a crucial role in the long-term preservation of the system while also contributing to its overall sustainability. Caprock failure subsequent to seismic activity near a geothermal site can lead to the permeation of the caprock structure, resulting in diminished sealing capabilities and a decline in the reservoir temperature. In addition, this process alters the geochemical composition of the water by creating a hydrothermal mixture zone that disrupts the resistivity structure of the caprock, which is typically characterized by low resistivity values due to its substantial clay content and mineral alteration. This study focuses on investigating the integrity of the caprock at the Çanakkale-Tuzla geothermal field in Turkey, where water temperature and conductivity were reported to have decreased after a moderate-magnitude earthquake and subsequent aftershocks. For this purpose, we have performed magnetotelluric (MT) measurements, a method known for its sensitivity to geochemical reactions. These measurements are conducted along two parallel profiles that encompassed a total of 32 stations. The particle swarm optimization (PSO) technique is used to overcome the subtle difficulties associated with conventional inversion methods in modeling the MT data of complex formations. This is the first study that overcomes the difficulties emanating from the caprock failure by modeling MT data using PSO. Our modeling approach produces resistivity images that we interpreted as the signature of the failed caprock following the earthquake at the study site. Our results appear to confirm the documented geochemical changes, or hydrothermal mixture zone around the caprock structure.
AtıfScopus5WoS6OpenAlex2İncele - MakaleYalnız künye2024Scopus SJRQ3Adsorption of Azocarmine G dye on H2SO4-modified acacia sawdust
Duran, Celal; Ozeken, Sengul Tugba; Camoglu, Aslihan Yilmaz; Ozdes, Duygu
Presence of hazardous dyes in water cause considerable risks to the human health and environment due to their potential toxicity and ecological disruptions. Therefore, in the present research, to suggest an alternative method for the retention of toxic Azocarmine G (ACG) dye from aqueous media, natural and H2SO4-modified acacia sawdust were performed for the first time as low-cost and efficient adsorbents. Based on batch experiments, it was determined that the best conditions for the developed dye retention process were an initial pH of 2.0 and an equilibrium time of 240 min. Analysis of the data using both pseudo-first order and pseudo-second order kinetic models showed that the retention of ACG onto the adsorbents predominantly occurred through chemical adsorption. Langmuir, Freundlich, and Dubinin-Radushkevich isotherm models were employed to provide insights into the interaction between the adsorbate and adsorbent and the mechanism of the adsorption process. Maximum monolayer adsorption capacities of natural and H2SO4-modified acacia sawdust were determined as 28.01 and 64.90 mg g-1, respectively by Langmuir isotherm model. Results of the study clearly indicated that the modification of acacia sawdust with H2SO4 leads to a substantial increase in the adsorption performance of anionic dyes.
- MakaleAçık Erişim2024Scopus SJRQ4A driver perspective-based investigation for lane line visibility of pavements on drivers’ lane utilization behaviors
Aydın, Metin Mutlu; Orhan, Eda
There have been significant advances in vehicle safety and road construction in all over the world and driver misbehaviours are still shown as one of the most important reasons of traffic accidents. When the current traffic accidents are examined, the negative effect of lane line quality and level of visibility related on the accidents comes to the forefront in underdeveloped and developing countries. In this study, the effect of lane line visibility level on drivers' lane utilization was investigated in detail. For this aim, a total of 17 different points in Türkiye were selected and the lateral positions of the vehicles on the road surface at these points were determined with the help of the screen scaling technique. In order to determine the level of lane line quality for an expert group and driver perspective, a face-to-face survey was conducted. From the analysis results, the lane line quality was determined low in urban and intercity roads, and the average maximum evaluation score was determined as 4.7 and the lowest score was determined as 1.42 where the best line quality was 5. This result showed that the level of lane line quality had significant differences at different points. Although, it was observed that the lateral position distributions in the examined points fit the normal distribution, the distribution of both the right/left wheels and their gravity center skewed to the right or left and deviated from the ideal conditions on road surfaces. It showed that the vehicles do not center the lanes exactly, but usually move close to the right or left edge of the lane. This situation also clearly revealed that the lane utilization disciplines of drivers are quite weak with the effect of the low lane line quality on road surfaces.
- MakaleYalnız künye2024Scopus SJRQ1Investigation of dynamic responses of three-sided underpass culvert under near-fault and far-fault ground motions considering soil-structure interaction
Ozturk, Kasif Furkan
Three-sided underpass culverts are structural systems used to provide passing vehicle or pedestrian. It is of great importance that such infrastructure systems remain useable, especially after disasters such as earthquakes that can cause great destruction, in order to ensure that infrastructure services can be maintained continuously. In this context, the aim of this study is to investigate using finite element method (FEM) the dynamic responses of three-sided underpass culvert system under near-fault ground motions with velocity pulse and far-fault ground motions. For this aim, the modal analysis of the soil-underpass culvert interaction system has been realized using proposed soil-structure interaction (SSI) model. The frequencies of the interaction system obtained from the finite element model developed using proposed approaches have been verified comparing with the results obtained from the literature and the site periods. After showing that the modes of the interaction system can be obtained with the help of the proposed numerical model, the full transient dynamic analyses have been performed in the time history using five near-fault and far-fault records, considering four different soil systems. The comparisons shows that the variations of the soil systems and the ground motion type can significantly affect the top peak relative displacements and the dynamic stresses of the three-sided underpass culvert.
AtıfScopus16WoS13OpenAlex15İncele - MakaleAçık Erişim2024Scopus SJRQ1Integrated deep learning and ensemble learning model for deep feature-based wheat disease detection
Catal Reis, Hatice; Turk, Veysel
Early detection of plant diseases is critical to prevent disease spread and assist farmers. Thanks to their high discrimination ability, Convolutional Neural Network (CNN)-based architectures can offer practical solutions in identifying different plant diseases. This study proposes a combined method to classify wheat plant diseases using the Integrated Deep Learning Framework (IDLF) and ensemble learning (EL) model. The proposed method uses pre-trained deep neural networks (ImageNet -based model (w/pre-training)). In addition, in the classification process, the performance of hybrid methods consisting of 13 deep learning architectures (DLA) trained from scratch, pre-trained DLA, deep, and-machine learning models were analyzed. Moreover, the use of hypercolumn, contrast stretching, and “Contrast Limited Adaptive Histogram Equalization (CLAHE)” techniques are used to improve the image quality of the dataset. It is aimed to obtain a strong classification performance by combining these methods. In the experimental process, in the study using the original dataset, the RegNetY080 model trained from scratch had an accuracy value of 97.64%; in the study with the optimized dataset with CLAHE, an accuracy value of 98.33%; in the study performed with the CLAHE-improved dataset and transfer learning method, an accuracy value of 99.58% was obtained. An accuracy of 99.58% was achieved in the proposed hybrid study with the pre-trained RegNetY080 model and Random Forest (RF). The proposed method using IDLF and EL model provided 99.72% accuracy. When the proposed method was applied to the Wheat Leaf Dataset and Wheat Leaf Disease dataset, 97.56% accuracy was obtained for the Wheat Leaf Dataset and 99.43% for Wheat Leaf Disease. The results of this study can be helpful to experts and farmers in the detection of plant diseases.
AtıfScopus49WoS33OpenAlex41İncele - MakaleYalnız künye2024Scopus SJRQ2An efficient Hartley–Ross type estimators of nonsensitive and sensitive variables using robust regression methods in sample surveys
Zaman, Tolga; Shazad, Usman; Yadav, Vinay Kumar
In sample surveys, the problem of outliers is one of the most frequent and widest, whose solution is required to be obtained using statistical techniques. To overcome this problem, various robust regression methods are being developed such as LTS, LMS, LAD, Huber-M, Hample-M, Tukey-M and Huber-MM methods. This article presents the modified Hartley–Ross type ratio estimators to estimate the population mean in sample surveys. The proposed design is taken into account under the two suppositions one is that the study variable is a non-sensitive variable, which means that measurements on it do not embarrass participants in personal interviews and other is the sensitive variable, which means that measurement errors are introduced as a result of a few dishonest responses. The use of scrambling response models helps to reduce these measurement errors to some extent. The proposed estimator is found to be more efficient than the existing classical estimators. A Numerical illustration was performed on a real data set in R-Program Software to support of our findings.
AtıfScopus15WoS17OpenAlex16İncele