Pub Date : 2019-03-30DOI: 10.30516/BILGESCI.487621
Merve Karaabat Varol, I. Ugur, S. G. Erçelebi
Mining investments are high-risky investments due to mineral deposit uncertainties. Therefore, before any investment decision is given, an economic assessment should be performed and several risk situations must be taken into consideration. In this study, it was examined whether or not an investment made in a copper mine in Siirt, Turkey is economical by using Sensitivity Analysis and Monte Carlo Simulation. The aim of this study is to construct cash flows for this copper mine with an average grade of 2.35% Cu and 39.821.000 tons reserve throughout 25 years for two different situations. In the first case, it was assumed that the total investment amount will be covered by 100% equity, while in the second case the total investment amount was assumed to be 30% equity and 70% bank loan. In the Sensitivity Analysis, mineral processing and operating costs, the average grades and ore concentrate sale prices were evaluated over optimistic and pessimistic forecasts. Changes in the net present value and internal rate of return were examined without risk. Monte Carlo Simulation was run by using computer software program @Risk 6.0 and applied to investment criteria for this copper mine field. The analysis of the output modelling situations where decisions were made under uncertainty gave reliable results by quantifying the degree of risk for this mining project. Consequently, if the investment was provided with 100% equity, NPV was 136.369.150,7 $ and IRR was 32% with a discount rate of 15%, probably as likely to harm the project was about 0,018. If the investment was provided with 30% equity, NPV was 111.742.245,4 $, IRR was 28% with a discount rate of 15%, probably as likely to harm the project was about 0,05. In accordance with the results, the investment can be said to be a profitable project in both assumptions.
{"title":"INVESTMENT RISK EVALUATION OF SIIRT MADENKÖY COPPER MINE IN TURKEY","authors":"Merve Karaabat Varol, I. Ugur, S. G. Erçelebi","doi":"10.30516/BILGESCI.487621","DOIUrl":"https://doi.org/10.30516/BILGESCI.487621","url":null,"abstract":"Mining investments are high-risky investments due to mineral deposit uncertainties. Therefore, before any investment decision is given, an economic assessment should be performed and several risk situations must be taken into consideration. In this study, it was examined whether or not an investment made in a copper mine in Siirt, Turkey is economical by using Sensitivity Analysis and Monte Carlo Simulation. The aim of this study is to construct cash flows for this copper mine with an average grade of 2.35% Cu and 39.821.000 tons reserve throughout 25 years for two different situations. In the first case, it was assumed that the total investment amount will be covered by 100% equity, while in the second case the total investment amount was assumed to be 30% equity and 70% bank loan. In the Sensitivity Analysis, mineral processing and operating costs, the average grades and ore concentrate sale prices were evaluated over optimistic and pessimistic forecasts. Changes in the net present value and internal rate of return were examined without risk. Monte Carlo Simulation was run by using computer software program @Risk 6.0 and applied to investment criteria for this copper mine field. The analysis of the output modelling situations where decisions were made under uncertainty gave reliable results by quantifying the degree of risk for this mining project. Consequently, if the investment was provided with 100% equity, NPV was 136.369.150,7 $ and IRR was 32% with a discount rate of 15%, probably as likely to harm the project was about 0,018. If the investment was provided with 30% equity, NPV was 111.742.245,4 $, IRR was 28% with a discount rate of 15%, probably as likely to harm the project was about 0,05. In accordance with the results, the investment can be said to be a profitable project in both assumptions.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131021654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this research was to evaluate the relations among selective information processing about role models (SIP), motivation to lead (MTL), fear of leadership (FOL), role model evaluation and regulatory focus. It is obvious that the appropriate leadership are essential for safety at sea. In literature review, innotivation in academic and health domains by positive and negative role models depending on regulatory focus was investigated. This research study targets leader and leader candidate seafarers and uses randomsampling methods. Data were collected from 200 students of ITU Maritime Faculty and 40 master (leader) seafarers working in the Shipping companies. Data were gathered online through Qualtrics. 6 different types of questionnaires were applied. SIP, a hypothetical role model text describing the event of the leading seafarer was presented. Role model evaluation, participants were asked to rate how happyunhappy, successful-unsuccessful they thought the leader was and how positive-negative the leadership experience of the role model was and how much they aspired to be like this role model. MTL has three subscales: affective, noncalculative, social-normative. Regulatory focus is composed of two subscales assessing prevention and promotion focus. FOL has 16 items that comprised of a list of possible negative consequences of leadership. Finally, 7 demographic questions were asked and scales compared according to demographics. relationships between factors were assessed by correlation analysis Bivariate correlation analysis was used to determine relations between scales and multiple linear regression analysis was used to determine the factors affected the MTL and FOL. Backward variable selection used to determine the significant parameters. It is seen that, MTL is affecting promotion focus and FOL. FOL is affecting prevention focus and MTL.
{"title":"Leadership in Maritime: Assessing the effect of Leadership Motivation and Fear","authors":"Leyla Tavacioglu, Umut Taç, Özge Eski, Neslihan Gökmen, Burak Uzun, Ufukcan Tirgil","doi":"10.30516/BILGESCI.489067","DOIUrl":"https://doi.org/10.30516/BILGESCI.489067","url":null,"abstract":"The aim of this research was to evaluate the relations among selective information processing about role models (SIP), motivation to lead (MTL), fear of leadership (FOL), role model evaluation and regulatory focus. It is obvious that the appropriate leadership are essential for safety at sea. In literature review, innotivation in academic and health domains by positive and negative role models depending on regulatory focus was investigated. This research study targets leader and leader candidate seafarers and uses randomsampling methods. Data were collected from 200 students of ITU Maritime Faculty and 40 master (leader) seafarers working in the Shipping companies. Data were gathered online through Qualtrics. 6 different types of questionnaires were applied. SIP, a hypothetical role model text describing the event of the leading seafarer was presented. Role model evaluation, participants were asked to rate how happyunhappy, successful-unsuccessful they thought the leader was and how positive-negative the leadership experience of the role model was and how much they aspired to be like this role model. MTL has three subscales: affective, noncalculative, social-normative. Regulatory focus is composed of two subscales assessing prevention and promotion focus. FOL has 16 items that comprised of a list of possible negative consequences of leadership. Finally, 7 demographic questions were asked and scales compared according to demographics. relationships between factors were assessed by correlation analysis Bivariate correlation analysis was used to determine relations between scales and multiple linear regression analysis was used to determine the factors affected the MTL and FOL. Backward variable selection used to determine the significant parameters. It is seen that, MTL is affecting promotion focus and FOL. FOL is affecting prevention focus and MTL.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"1 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128395066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-31DOI: 10.30516/BILGESCI.490775
T. Bakır, Reyhan Arabacıoğlu, F. Kandemirli, İ. Şener
In this study, peroxidation of olive oil, corn oil, sunflower oil, walnut oil, argan oil, rosehip oil emulsions was carried out in the presence of copper (II) ion at 37 ° C and pH 7 in a ventilated incubation environment. Primer products (hydroperoxides) were monitored by Fe (III) SCN method and secondary products (malondialdehyde) were analyzed by TBARS analytical methods. In addition, GC-MS analysis were performed on the oils studied to identify compounds that behave as free radical scavengers or hydrogen donors. Before preparation of the oil emulsions in water, iodine index determinations of the degrees of unsaturation in the oils were made and found to be 86.28, 128.12, 140.22, 164.97, 97.29 and 183.58 gI 2 / 100g for olive oil, corn oil, sunflower oil, walnut oil, argan oil and rosehip oil respectively. The rate constants were calculated kwalnut oil > kargan oil > krosehip oil > ksunflower oil > kcorn oil > kolive oil for FeSCN method and krosehip oil > kwalnut oil > kargan oil > kolive oil > ksunflower oil > kcorn oil for TBARS method, respectively. As a result, pseudo first order kinetics of hydroperoxides and aldehydes were observed in copper-catalyzed oil emulsions at 37 ° C and pH 7, and the absorbance values obtained as a function of the incubation period gave sigmoidal curves. This study showed that the oxidation rates of fats are closely related to the conjugated fatty acids. It was thought that the kinetic data obtained could be used to accurately calculate the shelf life of oils used as food components.
本研究对橄榄油、玉米油、葵花籽油、核桃油、摩洛哥坚果油、玫瑰果油乳状液在铜(II)离子存在下，在37℃、pH 7的通风培养环境下进行了过氧化。引物(氢过氧化物)采用Fe (III) SCN法监测，二次产物(丙二醛)采用TBARS法分析。此外，对所研究的油进行了GC-MS分析，以确定作为自由基清除剂或供氢剂的化合物。在制备油乳剂前，对橄榄油、玉米油、葵花籽油、核桃油、摩洛哥坚果油和玫瑰果油的不饱和度进行了碘指数测定，分别为86.28、128.12、140.22、164.97、97.29和183.58 gI 2 / 100g。FeSCN法计算的速率常数分别为:核桃油>核桃油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油>黑果油。结果表明，在37℃和pH为7的条件下，铜催化油乳中氢过氧化物和醛类物质的准一级动力学得到了吸光度值随孵育时间的函数曲线。研究表明，脂肪的氧化速率与共轭脂肪酸密切相关。本文认为，所获得的动力学数据可用于准确计算食品原料油的保质期。
{"title":"Investigation of peroxidation kinetics in oil-in-water emulsions induced by Cu(II)","authors":"T. Bakır, Reyhan Arabacıoğlu, F. Kandemirli, İ. Şener","doi":"10.30516/BILGESCI.490775","DOIUrl":"https://doi.org/10.30516/BILGESCI.490775","url":null,"abstract":"In this study, peroxidation of olive oil, corn oil, sunflower oil, walnut oil, argan oil, rosehip oil emulsions was carried out in the presence of copper (II) ion at 37 ° C and pH 7 in a ventilated incubation environment. Primer products (hydroperoxides) were monitored by Fe (III) SCN method and secondary products (malondialdehyde) were analyzed by TBARS analytical methods. In addition, GC-MS analysis were performed on the oils studied to identify compounds that behave as free radical scavengers or hydrogen donors. Before preparation of the oil emulsions in water, iodine index determinations of the degrees of unsaturation in the oils were made and found to be 86.28, 128.12, 140.22, 164.97, 97.29 and 183.58 gI 2 / 100g for olive oil, corn oil, sunflower oil, walnut oil, argan oil and rosehip oil respectively. The rate constants were calculated kwalnut oil > kargan oil > krosehip oil > ksunflower oil > kcorn oil > kolive oil for FeSCN method and krosehip oil > kwalnut oil > kargan oil > kolive oil > ksunflower oil > kcorn oil for TBARS method, respectively. As a result, pseudo first order kinetics of hydroperoxides and aldehydes were observed in copper-catalyzed oil emulsions at 37 ° C and pH 7, and the absorbance values obtained as a function of the incubation period gave sigmoidal curves. This study showed that the oxidation rates of fats are closely related to the conjugated fatty acids. It was thought that the kinetic data obtained could be used to accurately calculate the shelf life of oils used as food components.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124346978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the maritime industry, a person of lower class or rank is exposed to mobbing, which can easily be observed. In Turkey, instead of expressing mobbing in a specific word as "bullying in the workplace", replaced it as "emotional harassment", "psychological violence at work", "intimidation". The aim of the study is to determine the factors that affect the mobbing. Survey participants are 178 volunteers, almost all of the maritime university faculties and several private companies participated the survey. Data were collected in May 2018 in Turkey. Mobbing Scale (Leymann's LIPT-The Leymann Ivertory of Psychological For Social Sciences) was used. Mobbing scale has 5 factors: relationship, threat and harassment, business and career-related obstacles, private life, commitment to work. Statistical analysis were applied in SPSS (Statistical Package for Social Sciences v24). According to demographics, relationships between factors were assessed by correlation analysis. Multiple linear regression analysis was used to determine the factors affected the mobbing. 5 regression models were set up for each 5 factors. Bivariate correlations with Spearman’s rho coefficients between all factors are utilized. According to regression results, it is seen that variables affected mobbing significantly. Demographics are effective in determining mobbing. Theoretical and practical implications of the findings are discussed.
在航运业中，较低等级或级别的人容易受到围攻，这很容易观察到。在土耳其，用“情绪骚扰”、“工作中的心理暴力”、“恐吓”来代替“职场欺凌”，而不是用一个特定的词来表达“暴徒”。这项研究的目的是确定影响围捕的因素。调查参与者是178名志愿者，几乎所有的海事大学院系和几家私营公司参与了调查。数据于2018年5月在土耳其收集。使用了Mobbing量表(Leymann's LIPT-The Leymann Ivertory of Psychological For Social Sciences)。Mobbing量表有5个因素:关系、威胁和骚扰、商业和职业相关障碍、私人生活、工作承诺。采用SPSS (Statistical Package for Social Sciences v24)软件进行统计分析。根据人口统计学，通过相关分析评估各因素之间的关系。采用多元线性回归分析确定影响人群聚集的因素。对每5个因素分别建立5个回归模型。利用所有因素之间的Spearman系数的双变量相关性。从回归结果可以看出，变量对mobbing的影响是显著的。人口统计数据是决定人群聚集的有效因素。讨论了研究结果的理论和实践意义。
{"title":"A Research As Mobbing Examination in Maritime Sector","authors":"Leyla Tavacioglu, Neslihan Gökmen, Özge Eski, Vedat Sarı, Aslı Ceren Yılmaz","doi":"10.30516/BILGESCI.489095","DOIUrl":"https://doi.org/10.30516/BILGESCI.489095","url":null,"abstract":"In the maritime industry, a person of lower class or rank is exposed to mobbing, which can easily be observed. In Turkey, instead of expressing mobbing in a specific word as \"bullying in the workplace\", replaced it as \"emotional harassment\", \"psychological violence at work\", \"intimidation\". The aim of the study is to determine the factors that affect the mobbing. Survey participants are 178 volunteers, almost all of the maritime university faculties and several private companies participated the survey. Data were collected in May 2018 in Turkey. Mobbing Scale (Leymann's LIPT-The Leymann Ivertory of Psychological For Social Sciences) was used. Mobbing scale has 5 factors: relationship, threat and harassment, business and career-related obstacles, private life, commitment to work. Statistical analysis were applied in SPSS (Statistical Package for Social Sciences v24). According to demographics, relationships between factors were assessed by correlation analysis. Multiple linear regression analysis was used to determine the factors affected the mobbing. 5 regression models were set up for each 5 factors. Bivariate correlations with Spearman’s rho coefficients between all factors are utilized. According to regression results, it is seen that variables affected mobbing significantly. Demographics are effective in determining mobbing. Theoretical and practical implications of the findings are discussed.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"82 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113967426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-31DOI: 10.30516/BILGESCI.487078
Mukadder Iğdi-Şen
{"title":"The Faintest and Closest Clusters in CFHTLS W4","authors":"Mukadder Iğdi-Şen","doi":"10.30516/BILGESCI.487078","DOIUrl":"https://doi.org/10.30516/BILGESCI.487078","url":null,"abstract":"","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"1991 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125512251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-31DOI: 10.30516/BILGESCI.490925
A. Atasoy, E. Saka
There are more than ten MAX phase systems and more than fifty MAX phases. This work is focused to produce Ti 3 SiC 2 MAX phase using Si, C, TiC powders. On the DTA curve of the mixture showed two exothermic peaks at temperature 970 and 1250 ˚C which were related with the formation of the MAX structure on the carbide layer. TiSi, SiC, TiC and Ti 3 SiC 2 phases were detected in the sintered samples at temperature above 1300 ˚C for 3 h sintering time. At higher temperature and longer reaction time, SiC decomposes depending on the holding and reaction temperature. The silicon to titanium carbide and carbon ratios should be in stoichiometric but the silicon content of the starting composition requires more than 20% excess.
{"title":"Ti3SiC2 MAX Phase From TiC-Si-Ti Mixture","authors":"A. Atasoy, E. Saka","doi":"10.30516/BILGESCI.490925","DOIUrl":"https://doi.org/10.30516/BILGESCI.490925","url":null,"abstract":"There are more than ten MAX phase systems and more than fifty MAX phases. This work is focused to produce Ti 3 SiC 2 MAX phase using Si, C, TiC powders. On the DTA curve of the mixture showed two exothermic peaks at temperature 970 and 1250 ˚C which were related with the formation of the MAX structure on the carbide layer. TiSi, SiC, TiC and Ti 3 SiC 2 phases were detected in the sintered samples at temperature above 1300 ˚C for 3 h sintering time. At higher temperature and longer reaction time, SiC decomposes depending on the holding and reaction temperature. The silicon to titanium carbide and carbon ratios should be in stoichiometric but the silicon content of the starting composition requires more than 20% excess.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"26 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132433565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-31DOI: 10.30516/BILGESCI.491148
Hayati Mamur, Ayberk Aktaş, Sergen Kuzey
Muzik aletlerinden cikan seslerin her birinin kendine ozgu frekanslari ve nota degerleri vardir. Bu notalarin bilinmesi uzman kulagi icin cok kolay iken, muzikle ugrasmamis bir kisi icin bunlarin belirlenmesi hemen hemen mumkun degildir. Bir muzik aletinden cikan seslerin frekanslari ve nota degerleri bilinir ve bunlar dijital bir ortama aktarilabilirse, diger aletlerle kiyaslamasi rahatlikla yapilabilecektir. Bu frekans degerleri kullanilarak da degisik muzik parcalarinin bilgisayar ortaminda yapilmasi kolaylasacaktir. Bunun icin bu calismada, bir muzik aleti olan gitardan cikan nota degerlerinin belirlenmesi ve bunlarin frekanslarinin saptanmasi icin MATLAB tabanli bir yazilim gelistirilmistir. Bu yazilim sayesinde ilk olarak muzik aletinin sesi MATLAB ortamina kaydedilmistir. Daha sonra da bu sesler islenerek frekanslari belirlenmis ve bunlarin hangi notayi temsil ettigi cikarimi yapilmistir. Bunlar MATLAB grafik kullanici arayuzu (GUI) yardimiyla da ekranda gorsellestirilerek kullaniciya sunulmustur. Saptanan degerlerin dogrulamasi muzik notalarini taniyici baska bir yazilim ile gerceklestirilmistir. Abstract: The sounds of musical instruments each have their own frequencies and note values. While it is easy for the expert's ear to know these notes, it is almost impossible to identify them for a person who is not involved in music. The frequencies and note values of these sounds coming from a musical instrument are known and if they can be transferred to a digital environment, they can be compared with other instruments. Using these frequency values, it will be easier to make different music pieces in computer environment. In this study, MATLAB based software has been developed to determine the musical values of notes and to determine their frequencies. Thanks to this software, the sound of the instrument was first recorded in MATLAB. Then, these sounds were processed and their frequencies were determined and which notes were represented. These are visualized on the screen with the help of the MATLAB graphical user interface (GUI) and presented to the user. Verification of the detected values was carried out by different software that recognizes the musical notes.
{"title":"Müzik Notalarının MATLAB Yazılımıyla Belirlenmesi","authors":"Hayati Mamur, Ayberk Aktaş, Sergen Kuzey","doi":"10.30516/BILGESCI.491148","DOIUrl":"https://doi.org/10.30516/BILGESCI.491148","url":null,"abstract":"Muzik aletlerinden cikan seslerin her birinin kendine ozgu frekanslari ve nota degerleri vardir. Bu notalarin bilinmesi uzman kulagi icin cok kolay iken, muzikle ugrasmamis bir kisi icin bunlarin belirlenmesi hemen hemen mumkun degildir. Bir muzik aletinden cikan seslerin frekanslari ve nota degerleri bilinir ve bunlar dijital bir ortama aktarilabilirse, diger aletlerle kiyaslamasi rahatlikla yapilabilecektir. Bu frekans degerleri kullanilarak da degisik muzik parcalarinin bilgisayar ortaminda yapilmasi kolaylasacaktir. Bunun icin bu calismada, bir muzik aleti olan gitardan cikan nota degerlerinin belirlenmesi ve bunlarin frekanslarinin saptanmasi icin MATLAB tabanli bir yazilim gelistirilmistir. Bu yazilim sayesinde ilk olarak muzik aletinin sesi MATLAB ortamina kaydedilmistir. Daha sonra da bu sesler islenerek frekanslari belirlenmis ve bunlarin hangi notayi temsil ettigi cikarimi yapilmistir. Bunlar MATLAB grafik kullanici arayuzu (GUI) yardimiyla da ekranda gorsellestirilerek kullaniciya sunulmustur. Saptanan degerlerin dogrulamasi muzik notalarini taniyici baska bir yazilim ile gerceklestirilmistir. Abstract: The sounds of musical instruments each have their own frequencies and note values. While it is easy for the expert's ear to know these notes, it is almost impossible to identify them for a person who is not involved in music. The frequencies and note values of these sounds coming from a musical instrument are known and if they can be transferred to a digital environment, they can be compared with other instruments. Using these frequency values, it will be easier to make different music pieces in computer environment. In this study, MATLAB based software has been developed to determine the musical values of notes and to determine their frequencies. Thanks to this software, the sound of the instrument was first recorded in MATLAB. Then, these sounds were processed and their frequencies were determined and which notes were represented. These are visualized on the screen with the help of the MATLAB graphical user interface (GUI) and presented to the user. Verification of the detected values was carried out by different software that recognizes the musical notes.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123619085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-31DOI: 10.30516/BILGESCI.476442
H. Mindivan, O. Özkan
The main objective of this work has been the deposition of Nickel (Ni)–Graphene nanoplatelets (GNPs) composite coatings onto Ti-6Al-4V alloy plates via a pulse electrodeposition technique from a Watt’s type bath. The characterization of the coatings was done by structural surveys, hardness measurements and wear tests. In this current work, XRD and SEM analysis demonstrated the better grained and compact property of the Ni-GNPs deposits. The surface roughness of the composite coatings was significantly decreased with the addition of GNPs. Furthermore, the incorporation of GNPs into the Ni matrix improved both hardness and wear behaviour of the composite coating compared to the pure Ni coating.
{"title":"An Electrodeposition Method of Nickel–Graphene Composite Coatings on Ti–6Al–4V alloy","authors":"H. Mindivan, O. Özkan","doi":"10.30516/BILGESCI.476442","DOIUrl":"https://doi.org/10.30516/BILGESCI.476442","url":null,"abstract":"The main objective of this work has been the deposition of Nickel (Ni)–Graphene nanoplatelets (GNPs) composite coatings onto Ti-6Al-4V alloy plates via a pulse electrodeposition technique from a Watt’s type bath. The characterization of the coatings was done by structural surveys, hardness measurements and wear tests. In this current work, XRD and SEM analysis demonstrated the better grained and compact property of the Ni-GNPs deposits. The surface roughness of the composite coatings was significantly decreased with the addition of GNPs. Furthermore, the incorporation of GNPs into the Ni matrix improved both hardness and wear behaviour of the composite coating compared to the pure Ni coating.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124523666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-31DOI: 10.30516/BILGESCI.487263
İbrahim Tavuç, Mete Mısırlıoğlu, Aliye Sepken Kaptanoğlu, Nejat Çelik
Toprak solucanlari, topragin fiziksel, kimyasal ve biyolojik ozellikleri uzerindeki olumlu etkilerinden dolayi ekosistem muhendisleri olarak tanimlanmaktadir. Dunya genelinde bu canlilara olan ilgi ve yapilan calismalarin sayisi giderek artmakta iken, ulkemizde bu canlilarin ekolojileri hakkinda yeterince calisma yapilmamistir. Bu calisma Turkmen daginda farkli mescerelerde farkli toprak solucani turlerinin durumunu belirlemek ve mescereler arasindaki tur zenginligi farki olup olmadigini tespit etmek amaciyla bir on arastirma olarak gerceklestirilmistir. Toprak solucanlari Eskisehir ve Kutahya sinirlari icerisinde bulunan Turkmen Daginda 5 farkli mescerede (Karacam, Kayin, Saricam, Mera, Karacam+Saricam) 30x30x20 cm boyutlarinda alanlardan toplandi. Solucanlarin toplanmasinda ticari hardal metodu ile kazma ve elle ayiklama metodu birlestirilerek kullanilmistir. Cikartilan solucanlar icerisinde %70 etil alkol bulunan plastik kaplar icerisine konulmus ve laboratuvar ortamina getirilmistir. Laboratuvar ortaminda stereo mikroskop yardimi ile turleri ve birey sayilari belirlenmistir. Elde edilen veriler ile her bir mescerenin toprak solucani bakimindan tur zenginligi hesaplanmistir. Calisma sonucunda toplam 4 cinse ait (Aporrectodea, Dendrobaena, Lumbricus, Octolasion) 10 tur ve 74 birey bulunmustur. En fazla turun cayirlik, en az turun ise karacam mesceresinde oldugu tespit edilmistir. Her bir ornek alanin bolluk degeri hesaplandiginda en fazla bireyin saricam+karacam, en az bireyin ise karacam mesceresinde oldugu belirlenmistir. Iki metodun birlestirilerek kullanilmasinin oldukca zaman aldigi gorulmustur. Ancak verimlilik bakimindan degerlendirildiginde ticari hardal metodunun etkili olmadigi, kazma-elle ayirma metodunun oldukca etkili ve hizli bir metot oldugu sonucuna varilmistir.
{"title":"Türkmen Dağı’nda Farklı Meşcerelerde Yayılış Gösteren Toprak Solucanları (Clitellata, Megadrili) Hakkında Bir Ön Araştırma","authors":"İbrahim Tavuç, Mete Mısırlıoğlu, Aliye Sepken Kaptanoğlu, Nejat Çelik","doi":"10.30516/BILGESCI.487263","DOIUrl":"https://doi.org/10.30516/BILGESCI.487263","url":null,"abstract":"Toprak solucanlari, topragin fiziksel, kimyasal ve biyolojik ozellikleri uzerindeki olumlu etkilerinden dolayi ekosistem muhendisleri olarak tanimlanmaktadir. Dunya genelinde bu canlilara olan ilgi ve yapilan calismalarin sayisi giderek artmakta iken, ulkemizde bu canlilarin ekolojileri hakkinda yeterince calisma yapilmamistir. Bu calisma Turkmen daginda farkli mescerelerde farkli toprak solucani turlerinin durumunu belirlemek ve mescereler arasindaki tur zenginligi farki olup olmadigini tespit etmek amaciyla bir on arastirma olarak gerceklestirilmistir. Toprak solucanlari Eskisehir ve Kutahya sinirlari icerisinde bulunan Turkmen Daginda 5 farkli mescerede (Karacam, Kayin, Saricam, Mera, Karacam+Saricam) 30x30x20 cm boyutlarinda alanlardan toplandi. Solucanlarin toplanmasinda ticari hardal metodu ile kazma ve elle ayiklama metodu birlestirilerek kullanilmistir. Cikartilan solucanlar icerisinde %70 etil alkol bulunan plastik kaplar icerisine konulmus ve laboratuvar ortamina getirilmistir. Laboratuvar ortaminda stereo mikroskop yardimi ile turleri ve birey sayilari belirlenmistir. Elde edilen veriler ile her bir mescerenin toprak solucani bakimindan tur zenginligi hesaplanmistir. Calisma sonucunda toplam 4 cinse ait (Aporrectodea, Dendrobaena, Lumbricus, Octolasion) 10 tur ve 74 birey bulunmustur. En fazla turun cayirlik, en az turun ise karacam mesceresinde oldugu tespit edilmistir. Her bir ornek alanin bolluk degeri hesaplandiginda en fazla bireyin saricam+karacam, en az bireyin ise karacam mesceresinde oldugu belirlenmistir. Iki metodun birlestirilerek kullanilmasinin oldukca zaman aldigi gorulmustur. Ancak verimlilik bakimindan degerlendirildiginde ticari hardal metodunun etkili olmadigi, kazma-elle ayirma metodunun oldukca etkili ve hizli bir metot oldugu sonucuna varilmistir.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125249002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-31DOI: 10.30516/BILGESCI.488174
F. Alatürk, A. Gökkuş, H. Baytekin, A. O. Parlak, S. Birer
Abstract: This study has been conducted in order to determine the variations in digestibility and energy values of hay depending on the application of Hungarian vetch-cereal crop mixtures at different ratios. The research has been carried out in Canakkale in 2009–2011. The study has been designed according to randomized complete block design, and the plots were arranged as single and mixed (3:1, 2:2, 1:3 Hungarian vetch: cereal) crop sowing systems by using three replications with sowing Hungarian vetch mixing with barley, wheat, oats and triticale. Raw cellulose (RC), digestible dry matter (DDM), total digestible nutrients (TDDM), metabolic energy (ME), net energy (NEL) and relative feed value (RFV) like characteristics have been examined in this research. As the result of this research, the ratios of hay raw cellulose (RC) were not significantly important in accordance to different forms of sowing, while the values of DDM, TDDM, ME, NEL and RFV in hay were found higher in mixed sowing system than that of single sowing of cereal crops. In the study, it has been concluded that for being able to produce hay containing high nutrient value in the mixtures of Hungarian vetch with cereals then the mixture of wheat with Hungarian vetch with the ratio of 3: 1 would be suitable to sow.
{"title":"Effect of Different Ratios of Hungarian Vetch with Cereal Crop Mixtures on Hay Nutrient Value","authors":"F. Alatürk, A. Gökkuş, H. Baytekin, A. O. Parlak, S. Birer","doi":"10.30516/BILGESCI.488174","DOIUrl":"https://doi.org/10.30516/BILGESCI.488174","url":null,"abstract":"Abstract: This study has been conducted in order to determine the variations in digestibility and energy values of hay depending on the application of Hungarian vetch-cereal crop mixtures at different ratios. The research has been carried out in Canakkale in 2009–2011. The study has been designed according to randomized complete block design, and the plots were arranged as single and mixed (3:1, 2:2, 1:3 Hungarian vetch: cereal) crop sowing systems by using three replications with sowing Hungarian vetch mixing with barley, wheat, oats and triticale. Raw cellulose (RC), digestible dry matter (DDM), total digestible nutrients (TDDM), metabolic energy (ME), net energy (NEL) and relative feed value (RFV) like characteristics have been examined in this research. As the result of this research, the ratios of hay raw cellulose (RC) were not significantly important in accordance to different forms of sowing, while the values of DDM, TDDM, ME, NEL and RFV in hay were found higher in mixed sowing system than that of single sowing of cereal crops. In the study, it has been concluded that for being able to produce hay containing high nutrient value in the mixtures of Hungarian vetch with cereals then the mixture of wheat with Hungarian vetch with the ratio of 3: 1 would be suitable to sow.","PeriodicalId":133012,"journal":{"name":"Bilge International Journal of Science and Technology Research","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114616413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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