Yunus Torun | Cumhuriyet University (original) (raw)

Papers by Yunus Torun

Materials Science in Semiconductor Processing

Journal of Mechanics in Medicine and Biology, 2022

The patellofemoral joint is one of the parts of the knee extension mechanism that plays a role in... more The patellofemoral joint is one of the parts of the knee extension mechanism that plays a role in the stability of the knee by enlarging the force arm of the quadriceps muscle and changing the direction of the muscle strength. For the entire knee joint to perform its task painlessly and functionally, the positions and strength of the muscles, the strength of the ligaments, and their reaction to movement must be compatible. The Insall–Salvati (Ins-Sal) index is useful for showing changes in patellar height produced by repositioning the tibial plateau, in other words, showing changes in patellar tendon length. Patella height is an important value to be taken into account in knee prosthesis surgery, tibial osteotomy, and anterior cruciate ligament reconstruction. The morphometric relationship between the reference measurements of the distal femur and proximal tibia and the position of the patella will be useful in determining the natural anatomy. In this study, we aimed to determine th...

Advances in Environmental Engineering and Green Technologies, 2022

Biomass energy is an essential and sustainable type of energy for today and the future because it... more Biomass energy is an essential and sustainable type of energy for today and the future because it is produced from renewable sources and is environmentally friendly compared to fossil-based energy. Biomass energy is the only renewable energy source that creates social and economic impact together. It creates added value, provides employment, and creates new tax opportunities in many fields from agriculture to industry, from the transportation sector to the banking insurance sector. While other renewable energy sources cannot be stored, the energy obtained from biomass can be stored. In this aspect, energy production from biomass stands out from other renewable energy sources. One of the crucial handicaps in evaluating biomass as an energy source is the collection of biomass. Biomass is produced in different amounts in different village centers, while country roads are suitable for trucks of different sizes. In this chapter, the multi-capacity vehicle routing problem is modeled for b...

Türk Doğa ve Fen Dergisi, 2022

Orthopedic drills are currently used for various operations in surgical fields such as orthopedic... more Orthopedic drills are currently used for various operations in surgical fields such as orthopedics, ear, nose, and throat surgery. The path that orthopedic drills travel through the tissue is controlled manually by surgeons, and manual control leads to the risk of damaging areas such as nerves and tissues. In our study, an innovative approach is presented against existing drill designs and breakthrough detection problems. In the proposed model, the change in the load torque and the change in friction force caused by the tissue change in the drilling path are considered as a disturbance effect, and a disturbance observer has been developed that allows these disturbances to be observed. Observation of the disturbance effects allows the perception of the hardness of tissue change during drilling since it gives the change of load torque changes and friction coefficient, which cannot be measured under normal operation. The performance of the proposed approach has been proven by simulation study.

2018 3rd International Conference on Computer Science and Engineering (UBMK), 2018

Bone drilling operation is widely used method in surgery. This operation must be done with hight ... more Bone drilling operation is widely used method in surgery. This operation must be done with hight care. In the case of failur some demage might be happened. In this paper a new technich is presented. By this method 1,5 mm precision is optained.

2018 Electric Electronics, Computer Science, Biomedical Engineerings' Meeting (EBBT), 2018

Breakthrough detection of robotic drilling process for orthopedic surgery is proposed. Features a... more Breakthrough detection of robotic drilling process for orthopedic surgery is proposed. Features are extracted from Power Spectral Density (PSD) with Welch methods from acoustic emission signal during the drilling operation. According to the power spectrum, Band-Pass Infinitive Impulse Filter is performed to efficient frequency band selection. Most meaningful features which have been derived as median frequency and mean frequency are selected to create a projected feature. A simple breakthrough algorithm, which compares the current value of the projected feature with an adaptive threshold, is developed.

In medical drills, battery drills are highly preferred due to their comfort. Battery discharge du... more In medical drills, battery drills are highly preferred due to their comfort. Battery discharge during operation is a very important problem. For this reason, it is important to use the control method to minimize the energy consumption and to keep the drill speed in the desired range. In order to design an efficient control in any system, the system model and system parameters must be known. In this study, parameter estimation of a direct current geared motor used in medical drills was carried out by using system input/output signals. Nonlinear Least Squares method was used to estimate parameters then Genetic Algorithm optimization used to improve the model estimation performance. It was observed that the data obtained from the physical system and the model behaviors were similar in an acceptable range. Modeling improvement has been proven based on the criteria of Mean Square Error, Root Mean Square Error, Sum Square Error and Root Sum Square Error.

It is of high importance for autonomous robots that no collision occurs during operation and the ... more It is of high importance for autonomous robots that no collision occurs during operation and the target position is reached by using the softest and shortest route. While using the defined route, maximum efficiency is achieved by minimizing energy consumption. Thus, route calculation and optimization are one of the most important criteria’s when it comes to continuous improvement. In this study a hybrid of heuristic and classic route planning approaches have been used to combine their advantages while minimizing the disadvantages of each method. Initially the optimum route for a defined starting and destination point was determined by using Rapidlyexploring Random Tree-RRT method of the classic approach and artificial bee colony-ABC method of the heuristic approach separately. Afterwards a hybrid approach was used and compared by using the Robotic System Toolbox of MATLAB. The results of the study show that energy consumption of a two wheeled mobile robot is higher when using either...

Classification in natural stone industry have a great importance for enterprises. There are reins... more Classification in natural stone industry have a great importance for enterprises. There are reinstatement cases arising from the fact that ordered granite parties are not the same as the agreed sample parties at the beginning, which causes significant economic losses for the companies. There is a greater need to classify tiles using computer-aided image processing methods for the development of quality control processes that have become increasingly important due to the rapidly increasing competition and globalization in the natural stone industry. In this type of automatic systems, the attributes that give information about color and surface are extracted from the images of natural stone tiles with image processing techniques and then the data set obtained by using these attributes are classified by various artificial intelligence and data mining techniques. In this study, a classification was made on a dataset consisting of 996 pictures of natural stone tiles from six categories o...

The first excited 2+ energy states of nuclei give many substantial information related to the nuc... more The first excited 2+ energy states of nuclei give many substantial information related to the nuclear structure. Including these levels, all excited states of nuclei are shown regularities in spin, parity and energy. In the even-even nuclei, the first excited state is generally 2+ and the energy values of them increase as the closed shells are approached. The excited levels in nuclei can be investigated by using theoretical nuclear models such nuclear shell model. In the present study for the first time, we have used artificial neural networks for the determination of the energies of first 2+ states in the even-even nuclei in nuclidic chart as a function of Z, N and A numbers. We have used adopted literature values for the estimations. According to the results, the method is convenient for this goal and one can confidently use the method for the determination of first 2+ state energy values whose experimental values do not exist in the literature.

The fusion-barrier distribution is very sensitive to the structure of the colliding nuclei such a... more The fusion-barrier distribution is very sensitive to the structure of the colliding nuclei such as nuclear quadrupole and hexadecapole deformation parameters and their signs. If the nuclei that enter the fusion reaction are deformed, the barrier problem becomes complicated. Therefore the deformation parameters are taken into account in the calculations. In this study, Neuro-Fuzzy approach, ANFIS, method has been used for the estimation of ground-state quadrupole ( e 2 ) and hexadecapole ( e 4 ) deformation parameters for the nuclei. According to the results, the method is suitable for this task and one can confidently use it to obtain the data that is not available in the literature.

Bu calismada, geri besleme sinyalleri olarak bir resolver sensorun cikis sinyalleri kullanilarak ... more Bu calismada, geri besleme sinyalleri olarak bir resolver sensorun cikis sinyalleri kullanilarak bir motor pozisyon kontrolu sunulmustur. Resolver sensoru, motor rotor acisinin konum verisini elde etmek icin kullanilir. SMSM (sabit miknatisli senkron motor)'un enerji verimliligi motor pozisyon hatalarindan etkilenir. Cunku motor pozisyonu hatalari enerji kaybina neden olur. Artan pozisyon dogrulugu ayni zamanda enerji verimliligini de arttirir. Resolver sensoru yuksek cozunurluge sahiptir, ancak bu dogruluk optimize edilebilir. RDK (resolver dijital konverter) icerisinde bir gozlemci yontemi kullanilabilir. Ozellikle, Luenberg durum gozlemcisi kararli halde daha iyi parametreler uretir. SMSMlerde referans hizda nominal yuk altinda Luenberg durum ozlemcisi tabanli RDK tasarimi klasik RDK ile karsilastirilmistir. Ilk olarak, SMSM'nin matematiksel modeli kararli durumda aciklanmistir. Ek olarak, resolver ve RDK teorik olarak aciklanmistir. Boylece, hata degerleri PMSM icin bulu...

2019 27th Signal Processing and Communications Applications Conference (SIU)

In marble sector, marble quality varies depending on vessel pattern and color. These patterns and... more In marble sector, marble quality varies depending on vessel pattern and color. These patterns and colors are the most important factors affecting the quality and possible class of marble. The marble tiles in the marble palette ordered by the marble palette and the difference between the pattern and quality of the product causes the return of the product. Therefore, many firms suffer economic damage. In order to prevent this damage, it has become an important issue to automatically process the classification process with image processing and deep learning methods. In this study, it is aimed to make classification by adding new data to pre-trained network by AlexNet model. Fimar Marble Mine Co. Inc. operating in Sivas. In 3 different classes, 600 marble samples were trained by AlexNet model and Local Binary Pattern method and the pattern information was obtained. Local Binary Pattern method was used to classify the characteristic by creating color and pattern.

Superlattices and Microstructures

2018 International Conference on Artificial Intelligence and Data Processing (IDAP)

Cyprus Journal of Medical Sciences

Cumhuriyet Science Journal

Cumhuriyet Science Journal

Materials Science in Semiconductor Processing

Journal of Mechanics in Medicine and Biology, 2022

The patellofemoral joint is one of the parts of the knee extension mechanism that plays a role in... more The patellofemoral joint is one of the parts of the knee extension mechanism that plays a role in the stability of the knee by enlarging the force arm of the quadriceps muscle and changing the direction of the muscle strength. For the entire knee joint to perform its task painlessly and functionally, the positions and strength of the muscles, the strength of the ligaments, and their reaction to movement must be compatible. The Insall–Salvati (Ins-Sal) index is useful for showing changes in patellar height produced by repositioning the tibial plateau, in other words, showing changes in patellar tendon length. Patella height is an important value to be taken into account in knee prosthesis surgery, tibial osteotomy, and anterior cruciate ligament reconstruction. The morphometric relationship between the reference measurements of the distal femur and proximal tibia and the position of the patella will be useful in determining the natural anatomy. In this study, we aimed to determine th...

Advances in Environmental Engineering and Green Technologies, 2022

Biomass energy is an essential and sustainable type of energy for today and the future because it... more Biomass energy is an essential and sustainable type of energy for today and the future because it is produced from renewable sources and is environmentally friendly compared to fossil-based energy. Biomass energy is the only renewable energy source that creates social and economic impact together. It creates added value, provides employment, and creates new tax opportunities in many fields from agriculture to industry, from the transportation sector to the banking insurance sector. While other renewable energy sources cannot be stored, the energy obtained from biomass can be stored. In this aspect, energy production from biomass stands out from other renewable energy sources. One of the crucial handicaps in evaluating biomass as an energy source is the collection of biomass. Biomass is produced in different amounts in different village centers, while country roads are suitable for trucks of different sizes. In this chapter, the multi-capacity vehicle routing problem is modeled for b...

Türk Doğa ve Fen Dergisi, 2022

Orthopedic drills are currently used for various operations in surgical fields such as orthopedic... more Orthopedic drills are currently used for various operations in surgical fields such as orthopedics, ear, nose, and throat surgery. The path that orthopedic drills travel through the tissue is controlled manually by surgeons, and manual control leads to the risk of damaging areas such as nerves and tissues. In our study, an innovative approach is presented against existing drill designs and breakthrough detection problems. In the proposed model, the change in the load torque and the change in friction force caused by the tissue change in the drilling path are considered as a disturbance effect, and a disturbance observer has been developed that allows these disturbances to be observed. Observation of the disturbance effects allows the perception of the hardness of tissue change during drilling since it gives the change of load torque changes and friction coefficient, which cannot be measured under normal operation. The performance of the proposed approach has been proven by simulation study.

2018 3rd International Conference on Computer Science and Engineering (UBMK), 2018

Bone drilling operation is widely used method in surgery. This operation must be done with hight ... more Bone drilling operation is widely used method in surgery. This operation must be done with hight care. In the case of failur some demage might be happened. In this paper a new technich is presented. By this method 1,5 mm precision is optained.

2018 Electric Electronics, Computer Science, Biomedical Engineerings' Meeting (EBBT), 2018

Breakthrough detection of robotic drilling process for orthopedic surgery is proposed. Features a... more Breakthrough detection of robotic drilling process for orthopedic surgery is proposed. Features are extracted from Power Spectral Density (PSD) with Welch methods from acoustic emission signal during the drilling operation. According to the power spectrum, Band-Pass Infinitive Impulse Filter is performed to efficient frequency band selection. Most meaningful features which have been derived as median frequency and mean frequency are selected to create a projected feature. A simple breakthrough algorithm, which compares the current value of the projected feature with an adaptive threshold, is developed.

In medical drills, battery drills are highly preferred due to their comfort. Battery discharge du... more In medical drills, battery drills are highly preferred due to their comfort. Battery discharge during operation is a very important problem. For this reason, it is important to use the control method to minimize the energy consumption and to keep the drill speed in the desired range. In order to design an efficient control in any system, the system model and system parameters must be known. In this study, parameter estimation of a direct current geared motor used in medical drills was carried out by using system input/output signals. Nonlinear Least Squares method was used to estimate parameters then Genetic Algorithm optimization used to improve the model estimation performance. It was observed that the data obtained from the physical system and the model behaviors were similar in an acceptable range. Modeling improvement has been proven based on the criteria of Mean Square Error, Root Mean Square Error, Sum Square Error and Root Sum Square Error.

It is of high importance for autonomous robots that no collision occurs during operation and the ... more It is of high importance for autonomous robots that no collision occurs during operation and the target position is reached by using the softest and shortest route. While using the defined route, maximum efficiency is achieved by minimizing energy consumption. Thus, route calculation and optimization are one of the most important criteria’s when it comes to continuous improvement. In this study a hybrid of heuristic and classic route planning approaches have been used to combine their advantages while minimizing the disadvantages of each method. Initially the optimum route for a defined starting and destination point was determined by using Rapidlyexploring Random Tree-RRT method of the classic approach and artificial bee colony-ABC method of the heuristic approach separately. Afterwards a hybrid approach was used and compared by using the Robotic System Toolbox of MATLAB. The results of the study show that energy consumption of a two wheeled mobile robot is higher when using either...

Classification in natural stone industry have a great importance for enterprises. There are reins... more Classification in natural stone industry have a great importance for enterprises. There are reinstatement cases arising from the fact that ordered granite parties are not the same as the agreed sample parties at the beginning, which causes significant economic losses for the companies. There is a greater need to classify tiles using computer-aided image processing methods for the development of quality control processes that have become increasingly important due to the rapidly increasing competition and globalization in the natural stone industry. In this type of automatic systems, the attributes that give information about color and surface are extracted from the images of natural stone tiles with image processing techniques and then the data set obtained by using these attributes are classified by various artificial intelligence and data mining techniques. In this study, a classification was made on a dataset consisting of 996 pictures of natural stone tiles from six categories o...

The first excited 2+ energy states of nuclei give many substantial information related to the nuc... more The first excited 2+ energy states of nuclei give many substantial information related to the nuclear structure. Including these levels, all excited states of nuclei are shown regularities in spin, parity and energy. In the even-even nuclei, the first excited state is generally 2+ and the energy values of them increase as the closed shells are approached. The excited levels in nuclei can be investigated by using theoretical nuclear models such nuclear shell model. In the present study for the first time, we have used artificial neural networks for the determination of the energies of first 2+ states in the even-even nuclei in nuclidic chart as a function of Z, N and A numbers. We have used adopted literature values for the estimations. According to the results, the method is convenient for this goal and one can confidently use the method for the determination of first 2+ state energy values whose experimental values do not exist in the literature.

The fusion-barrier distribution is very sensitive to the structure of the colliding nuclei such a... more The fusion-barrier distribution is very sensitive to the structure of the colliding nuclei such as nuclear quadrupole and hexadecapole deformation parameters and their signs. If the nuclei that enter the fusion reaction are deformed, the barrier problem becomes complicated. Therefore the deformation parameters are taken into account in the calculations. In this study, Neuro-Fuzzy approach, ANFIS, method has been used for the estimation of ground-state quadrupole ( e 2 ) and hexadecapole ( e 4 ) deformation parameters for the nuclei. According to the results, the method is suitable for this task and one can confidently use it to obtain the data that is not available in the literature.

Bu calismada, geri besleme sinyalleri olarak bir resolver sensorun cikis sinyalleri kullanilarak ... more Bu calismada, geri besleme sinyalleri olarak bir resolver sensorun cikis sinyalleri kullanilarak bir motor pozisyon kontrolu sunulmustur. Resolver sensoru, motor rotor acisinin konum verisini elde etmek icin kullanilir. SMSM (sabit miknatisli senkron motor)'un enerji verimliligi motor pozisyon hatalarindan etkilenir. Cunku motor pozisyonu hatalari enerji kaybina neden olur. Artan pozisyon dogrulugu ayni zamanda enerji verimliligini de arttirir. Resolver sensoru yuksek cozunurluge sahiptir, ancak bu dogruluk optimize edilebilir. RDK (resolver dijital konverter) icerisinde bir gozlemci yontemi kullanilabilir. Ozellikle, Luenberg durum gozlemcisi kararli halde daha iyi parametreler uretir. SMSMlerde referans hizda nominal yuk altinda Luenberg durum ozlemcisi tabanli RDK tasarimi klasik RDK ile karsilastirilmistir. Ilk olarak, SMSM'nin matematiksel modeli kararli durumda aciklanmistir. Ek olarak, resolver ve RDK teorik olarak aciklanmistir. Boylece, hata degerleri PMSM icin bulu...

2019 27th Signal Processing and Communications Applications Conference (SIU)

In marble sector, marble quality varies depending on vessel pattern and color. These patterns and... more In marble sector, marble quality varies depending on vessel pattern and color. These patterns and colors are the most important factors affecting the quality and possible class of marble. The marble tiles in the marble palette ordered by the marble palette and the difference between the pattern and quality of the product causes the return of the product. Therefore, many firms suffer economic damage. In order to prevent this damage, it has become an important issue to automatically process the classification process with image processing and deep learning methods. In this study, it is aimed to make classification by adding new data to pre-trained network by AlexNet model. Fimar Marble Mine Co. Inc. operating in Sivas. In 3 different classes, 600 marble samples were trained by AlexNet model and Local Binary Pattern method and the pattern information was obtained. Local Binary Pattern method was used to classify the characteristic by creating color and pattern.

Superlattices and Microstructures

2018 International Conference on Artificial Intelligence and Data Processing (IDAP)

Cyprus Journal of Medical Sciences

Cumhuriyet Science Journal

Cumhuriyet Science Journal