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Koleksiyondaki öğeler
- MakaleYalnız künye2020Scopus SJRQ2Disaster Risk Perception of University Students
Mızrak, Sefa; Aslan, Ramazan
Stakeholders responsible for disaster management need to understand students' disaster risk perception in order to increase community resilience. The aim of this study was to develop a scale to determine disaster risk perception of university students on campus and to investigate the disaster risk perception of the students of Gümüşhane University in Turkey. The data of the study were collected from 617 students and analyzed by means of SPSS and AMOS programs. Descriptive statistics, factor analysis, Mann–Whitney U test, Kruskal–Wallis H test, and structural equation model were applied. Consequently, a valid and reliable scale consisting of four factors (exposure, anxiety, effect, and uncontrollable) was obtained. According to the students, rockfall was most likely to occur on campus. Gender and type of school had a significant effect on disaster risk perception, while disaster experience, disaster education, disaster volunteer, and class level did not have a significant effect on disaster risk perception. Students with chronic illness had significantly higher perceptions of the uncontrollable. The structural equation model showed that exposure, effect, and uncontrollable were significant and positive predictors of anxiety.
AtıfScopus40WoS30OpenAlex57
İncele - MakaleAçık Erişim2021On fourth order accuracy stable difference scheme for a multi-point overdetermined elliptic problem; [Көпнүктелi қайтаанықталған эллипстiк есеп үшiн төртiншi реттi дәлдiктi тұрақтылық айырымдық схемасы туралы]; [Об устойчивой разностной схеме четвертого порядка точности для многоточечной переопределенной эллиптической задачи]
Ashyralyyev, C.; Akyuz, G.
In this paper fourth order of accuracy difference scheme for approximate solution of a multi-point elliptic overdetermined problem in a Hilbert space is proposed. The existence and uniqueness of the solution of the difference scheme are obtained by using the functional operator approach. Stability, almost coercive stability, and coercive stability estimates for the solution of difference scheme are established. These theoretical results can be applied to construct a stable highly accurate difference scheme for approximate solution of multipoint overdetermined boundary value problem for multidimensional elliptic partial differential equations.
AtıfOpenAlex5İncele - MakaleAçık Erişim2022Scopus SJRQ4Evaluation of Lower Extremity Muscles Shortness, Flexibility, and Hypermobility in Adults with Asymptomatic Sacroiliac Joint Dysfunction
Narin, Ayşe Neriman; Yazgan Dağli, Beyza; Vural Cömert, Aysun; Bahar, Betül; Özturan, Kutay Engin
Objective: (a) To investigate the presence of sacroiliac joint dysfunction in asymptomatic individuals and (b) to compare lower limb muscle shortness, flexibility of hamstring and erector spinae muscles, and hypermobility between subjects with and without asymptomatic sacroiliac joint dysfunction. Material and Methods: A total of 54 healthy young adults subjects were included in the study. The subjects were assessed with the sacroiliac joint diagnostic procedure. The seated flexion test, the standing flexion test, the Gillet test, and bilateral bony landmark examination were performed by an expert investigator. According to the positivity of at least 3 of these tests, the subjects were divided into 2 groups, the asymptomatic sacroiliac joint dysfunction group and the control group. The shortness of tensor fasciae latae and iliopsoas muscles was evaluated with the modified Ober test and the modified Thomas test. The straight leg raise test and fingertip-to-floor test were carried out for hamstring and erector spinae muscles flexibility, while hypermobility was assessed according to the Beighton criteria. Results: The asymptomatic sacroiliac joint dysfunction was diagnosed in 38% of healthy adults. There was no statistical difference in the shortness of tensor fasciae latae and iliopsoas muscles between the asymptomatic sacroiliac joint dysfunction group and the control group (P > 0.05). Similarly, there was no difference between the groups in terms of the hamstring and erector spinae muscles flexibility, and the Beighton scores (P > 0.05). Conclusion: This study emphasized that asymptomatic sacroiliac joint dysfunction might be seen in healthy young adults without the difference in shortness and flexibility in the lower extremity and hypermobility.
- MakaleYalnız künye2021Scopus SJRQ2Effects of GSM 1800 band radiation on composition, structure and bioactivity of exopolysaccharides produced by yoghurt starter cultures
Karatas, Seyda Merve; Ekici, Lutfiye; Develi, Ibrahim; Dertli, Enes; Sagdic, Osman
In this study, the effects of GSM 1800 band radiation on composition, structure and bioactivity of exopolysaccharides (EPSs) produced by Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus were determined. For this, GSM 1800 band radiation was applied to both cultures and characteristics of EPSs extracted from the control groups (K) and the radiation stressed groups (R) were determined. An alteration in the chemical composition of the EPSs was observed and EPS production levels and molecular weights of the EPSs increased following the GSM 1800 band radiation application. Alterations in the functional groups, thermal and morphological characteristics of EPSs following the GSM 1800 band radiation application were confirmed by FTIR, TGA and SEM analysis, respectively. Importantly no alterations in the antioxidant and antibacterial activity of the EPSs were observed following the radiation application. These results suggested the effects of the GSM radiation on final characteristics of EPSs from yogurt starter cultures.
AtıfScopus8WoS5
İncele - MakaleYalnız künye2021Scopus SJRQ2Effects of the addition of rose hip on various nutritional and quality properties of ice cream
Ürkek, Bayram
In this study, the effects of rose hip (Rosa L.) on the physical, chemical and sensory characteristics, antioxidant activity and mineral contents of ice cream were investigated. Four different proportions (0, 5%, 10% and 15%) of rose hip were used in ice cream production. The sample containing 15% rose hip had the highest antioxidant activity (DPPH and total phenolic content, 28.71 mg sample mg-1 DPPH and 1555 mg GAE g-1 extract, respectively) and vitamin C (246.50 mg 100 g-1) among all ice cream samples. The L* and White Index values of the samples decreased significantly with the increment of rose hip concentration while the a* and b* values increased. The calcium, magnesium, sulfur, potassium, manganese, iron and zinc values increased with the addition of rose hip. Sensory results showed that the ice cream sample containing 15% rose hip had lower score than the control sample in terms of color, appearance, gumming structure, flavor and general acceptability.
AtıfScopus6WoS3İncele - MakaleAçık Erişim2020AN EXTENDED ANALYSIS OF THE MODELS TO ESTIMATE PHOTOVOLTAIC MODULE TEMPERATURE
Ozden, Talat; Tolgay, Doga; Yakut, M. Samet; Akinoglu, Bulent G.
To estimate the performance of the photovoltaic power systems is the key issue in their techno-economic feasibility analysis. Performances, on the other hand, strongly depends on the module temperatures of the photovoltaic systems. In this study, we evaluated the performance of ten different module temperature estimation models using the measured outdoor data of five different modules. The modules are installed at the rooftop of a building located at Central Anatolia where the climate is cold and semi-arid. The results showed that the models having smaller number of parameters perform better than the others. We concluded that such analysis should be carried out at different ambient conditions so that the best performing models for the site can be obtained. Another outcome of the study is that the seasonal evaluation of the performance of the models should be carried out.
AtıfScopus6OpenAlex6TR Dizin1
İncele - MakaleAçık Erişim2021Scopus SJRQ4Modal control of cantilever beam using a gyrostabilizer
Çuvalci, Olkan; Ünker, Faruk; Baturalp, Turgut Batuhan; Gülbulak, Utku; Ertas, Atila
In this paper, an experimental model of a horizontal cantilever beam with a rotating/oscillating attached to the shaker for harmonic excitation at the one end and a gyrostabilizer at the other end is built to verify the equations of the Lagrangian model. The primary focus of the study was to investigate the parameters of excitation amplitude, natural frequency, rotating mass (disk mass), and disk speed of gyro that would minimize the amplitude of the beam to identify these effects. Numerical and experimental results indicate that the angular momentum of the gyrostabilizer is the most effective parameter in the reduction of beam displacement.
AtıfScopus5WoS3İncele - MakaleAçık Erişim2021Scopus SJRQ2Burnout levels and sleep quality of COVID-19 heroes
Aydin Sayilan, Aylin; Kulakaç, Nurşen; Uzun, Sevda
Purpose: This study was carried out to determine the burnout levels and sleep quality of nurses in the coronavirus disease-2019 process. Design and Methods: The population of this descriptive and cross-sectional study consisted of all nurses working in hospitals in Turkey. Findings: Nurses' mean scores were compared by gender. The emotional burnout and personal achievement scores of male nurses were higher than those of female nurses. Single nurses had significantly higher emotional exhaustion and depersonalization scores than married individuals. Nurses mostly experienced emotional exhaustion, and burnout levels increased in line with insomnia. Implications for Nursing Practice: Nurses struggling on the frontline during the pandemic were determined to be at risk of insomnia and burnout.
AtıfScopus66WoS62OpenAlex97İncele - MakaleYalnız künye2021Scopus SJRQ1Towards a circular economy: Investigating the critical success factors for a blockchain-based solar photovoltaic energy ecosystem in Turkey
Erol, Ismail; Peker, Iskender; Ar, Ilker Murat; Turan, İsmet; Searcy, Cory
Novel business models can be implemented through digital platforms to enable better circular economy (CE) performance in the renewable energy industry. For example, blockchain can assist in developing innovative business models throughout the solar photovoltaic energy ecosystem (SPVEE) to improve CE. Ranked fifth in total installed photovoltaic (PV) capacity, Turkey, as a developing country, should take the necessary steps and make progress towards achieving CE in the SPVEE. The solar PV industry requires further innovation to address the negative environmental impact of existing linear business models. To ensure favorable results, identifying and evaluating critical success factors (CSFs) are necessary. However, no study has investigated CSFs for SPVEE or any other renewable energy source to achieve a blockchain-based infrastructure towards increased CE performance. Therefore, the goal of this study is to identify and examine the CSFs to improve the performance of a blockchain-based SPVEE towards CE in Turkey. To this end, first, the CSFs for blockchain-based SPVEE were identified through both a literature review and the Nominal Group Technique (NGT). Then, Intuitionistic Fuzzy (IF)-DEMATEL was used to explore their interrelationships based on the expert data. Finally, IF-DELPHI was employed to validate the results. Our findings suggested that effective government incentive programs and regulations are significant for blockchain-based SPVEE towards CE in Turkey. The findings of this study assist macro and micro decision-making in the potential implementation of blockchain in Turkish SPVEE to improve CE. They are also invaluable for other countries and can be used as a reference point.
AtıfScopus60WoS51OpenAlex58İncele - MakaleAçık Erişim2020Scopus SJRQ3Assessment of acid mine drainage formation using geochemical and static tests in mutki (Bitlis, se Turkey) mineralization area
Gücer, Mehmet Ali; Alemdağ, Selçuk; Akaryali, Enver
In this study, geochemical analyses, as well as short-term contact leaching and acid-base accounting tests, were carried out to determine the occurrence of acid mine drainage (AMD) by static tests in the ore stockpile areas at the Mutki Cu-Fe-Cr deposit (Bitlis, SE Turkey). According to the short-term contact leaching tests, the high enrichment in trace element concentrations in ore-bearing samples, especially in potentially toxic metals such as Cr, Cu, Mn, and Zn, were directly related to sulphide and oxide mineralizations. The pH (3.27–4.05) values of water samples, together with the classification of the intracontinental water resources, indicated that the water quality is the fourth class. Leaching tests, paste pH (3.42–4.46) and sulphide-sulphur (3.9–13.4 wt%) values also suggested that there was AMD production potential in the mineralization area. The AMD production potential was supported by the high mobility of several elements, such as Fe, Mg, Cr, As, Cu, S, and Zn. In ore samples, net neutralization potential (NNP) and net potential ratio (NPR) values were less than –20 kg CaCO3 /t and 1, respectively. The basalts forming the basement rock of the stockpile area were characterized by permeable to slightly permeable properties that potentially increase the contamination risk of the groundwater due to seepage in the stockpile area. In order to prevent seepage in the stock area, geomembrane (synthetic waterproofing covers) should be laid at the base to ensure impermeability. The improvements planned in the stock area were modeled by the finite element method and seepage discharges at a depth of 5 m were determined as 1.34 × 10–17m3/s. Thanks to these planned applications, surface and groundwater pollution can be efficiently prevented.
AtıfScopus6WoS3OpenAlex8TR Dizin4İncele - Kitap BölümüYalnız künye2021XIV: Is chivalric love the true love?
Yalçin, Elif Güvendi; Üçele, Hatice Gönül
Romances dates back to the creation of stories. In English history, the romance genre has evolved from the middle aged chivalric romances in between 14th and 15th centuries, to Elizabethan romances in the 16th century, to Gothic romances in the 18th century and the romances of the 19th century. Anthony Giddens's theory of "The Transformation of Intimacy" proposes that romantic love which he sees as the outcome of modernization of Western societies emerges in the late 18th century onwards and is linked with romance as a literature genre. Giddens starts with the appearance of romantic love which is a paragon that is extensively distributed in the 19th century, when marriage starts to get rid of the monetary and kinship ties which have the utmost importance in pre modern societies. In this concept, love which is inconsistent with intimacy and sexuality in pre modern societies is transformed into a confluent love in modern societies with the appearance of more independent and emancipated individuals. The aim of this study is to demonstrate the idea of courtly love within the concepts of gender, sexuality, marriage and rape. Therefore, this paper examines the classic work of Sir Walter Scott's Ivanhoe (1820). Ivanhoe (1820) is accepted as the classics of both English language- literature and Scottish literature. Although Ivanhoe is not accepted as 'non serious' popular romance novel, it employs the traditional development of the romance story line, which can be summarized as the struggle between good and evil represented in the main male figure and villains, the dangerous journey of the chief character, his specific battle and journey through ritual death as well as his saving the unprotected lady and wedding at the end. The story is set in medieval times and the issue of medievalism is inseparable from the characters' appreciation of love. At that time, there is no place for bodily desires and passion. Thus, the identities of female and male, love- marriage relationships, and the issue of rape reflect the early 19th century ideals which promote the values of chivalry.
- MakaleYalnız künye2021Scopus SJRQ3Specification of Some Superconductivity Parameters by Adding Lutetium to the YBCO (358) Ceramic Superconductor
Başoğlu, M.; Düzgün, I.; Öztürk, A.
Superconducting specimens of Y3-xLuxBa5Cu8O18+δ (where x = 0, 0.2, 0.4, 0.5) ceramic were fabricated via the solid-state route (SSR). The structural and superconducting features of the specimens were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Measurements and calculations were carried out for electrical resistance (R-T) and DC magnetization (M-H). The onset critical transition temperature (Tconset) of the specimens dropped to lower temperatures with the addition of lutetium (Lu). The estimated critical current density (Jc) values of the specimens, depending on the magnetic field, were extracted from the DC magnetization data. The changes in average grain size and bulk critical current density were examined. Improvement was observed in the bulk critical current density with increasing levels of Lu/Y substitution.
AtıfScopus10WoS10OpenAlex10İncele - MakaleAçık Erişim2022Scopus SJRQ2Investigation of biodegradability of doped composite oxide coated AZ91 alloy in blood plasma; [Katkili oksit kaplamasi büyütülen AZ91 alaşiminin kan plazmasi içerisindeki biyoçözünürlüǧünün incelenmesi]
Şüküroǧlu, Ebru Emine; Çelik, Ayşenur
Magnesium alloys; It is widely used in metallic biomaterials with its low toxic effect and biodegradability. Although these alloys help the formation of new tissues in the body, they provide great advantages over other metallic biomaterials due to their ability to dissolve from the body after the area of use has healed. However, due to their low corrosion resistance, they cause it to dissolve in the body before the treatment process is completed. This is the major disadvantage that limits the use of magnesium alloys. Various surface modification methods are applied to magnesium alloys in order to eliminate this disadvantage. Micro Arc Oxidation (MAO) method, which can provide a coating resistant to wear and corrosion, is one of the surface modification methods applied to improve the surface properties of magnesium alloys. In this study; Composite oxide coatings with Ag nanoparticle and Hydroxyapatite were grown by MAO method. Morphological properties of the coatings were determined by Scanning electron microscope and X-Ray Diffraction instruments. The antibacterial properties of Ag nanoparticle and HA doped composite oxide layer which were grown by MAO method and the biodegradability of the coated/uncoated materials in the blood plasma were investigated. As a result of the experiments, the development of bacterial activity in the sample coated by MAO was prevented by adding Ag nanoparticle and Hydroxyapatite to the electrolite solution. In addition, the biodegradation rate has been reduced by surface treatment on AZ91 Mg Alloy. As a result of the soaking test in blood plasma, it was determined that AZ91 Mg alloy protects itself against dissolution with a rate of approximately 89%.
AtıfScopus2WoS2OpenAlex2TR Dizin2İncele - MakaleYalnız künye2020Scopus SJRQ3PUC program: The pulse pile up correction for x-ray and gamma ray spectrometry
Karabıdak, S.M.; Kaya, S.
Pile up and dead time are two important corrections in the analysis of X-ray and gamma ray spectra. The most important of these is pile up correction because these peaks do not really exist in the spectra; they only seem to exist. For this reason, these peaks affect both the qualitative and quantitative accuracy of the analysis. In addition, the pile up pulses forming the pile up peaks increase the background count in the spectrum. Companies that produce X-ray or gamma ray detector systems design pile up reject circuits and integrate them into detector systems to prevent these pulses. These circuits have time limitations because they are made up of electronic devices. For this reason, the pile up problem cannot be solved completely in these circuits. Therefore, mathematical models based on a statistical approach are needed. Such a model was developed in this study. A computer program based on this model was developed. This developed program has been applied to X-ray and gamma ray spectra. It has been shown that this model provides about 2% correction in the main peak regions and significantly reduces background counts.
AtıfScopus3WoS2OpenAlex3İncele - MakaleYalnız künye2020Scopus SJRQ2Medium scale earthflow susceptibility modelling by remote sensing and geographical information systems based multivariate statistics approach: an example from Northeastern Turkey
Dağ, Serhat; Akgün, Aykut; Kaya, Ayberk; Alemdağ, Selçuk; Bostancı, Hasan Tahsin
The aim of the present study was to produce an earthflow susceptibility map for the city center and environs of the province of Rize located at the Northeastern part of Turkey. The study area is the rainiest region of Turkey, and due to the triggering effect of precipitation earthflows are frequently observed in and around the study area. Besides this point, weathered rock units and steep topography accompany with precipitation for the occurrence of earthflow cases. Considering this point, an earthflow susceptibility mapping was inferred to be a necessity for the area. Parameters, such as lithology, slope gradient, slope aspect, topographical wetness index (TWI), stream power index (SPI), slope curvature, and sediment capacity index (LS) were considered to be earthflow conditioning parameters. A multi-temporal earthflow inventory map for a period of 4 years (2011–2015) was initially generated by way of remote sensing approach and field surveys. Earthflow susceptibility map was produced using the logistic regression method after which the produced susceptibility map was validated. The mapped earthflows were separated into two groups prior to modelling and validation. The first group was for training and the second group was for validation steps. The accuracy of the model was measured by fitting them to a validation set of mapped earthflows. Area under curvature (AUC) approach was applied for validation purposes. The prediction capability of the earthflow susceptibility map produced can be regarded as acceptable in accordance with the AUC values of 0.62 for the logistic regression model. Based on these results, the obtained earthflow susceptibility map can be used to mitigate hazards related to landslides and to aid in land-use planning for the Rize city center.
AtıfScopus26WoS23OpenAlex31İncele - MakaleYalnız künye2021Scopus SJRQ4Acute effects of reverse kinesio taping on anaerobic performance in healthy subjects: A pilot study
Doğan, Erol; Erail, Serhat; Mayda, Muhammet Hakan; Yılmaz, Coşkun; Karaduman, Emre; Yılmaz, Ali Kerim; Bayram, Levent; Keskin, Deniz Özge Yüceloğlu; Ermiş, Egemen
Study Objectives: This study aimed to determine whether the Kinesio tape (KT) application through reverse taping on the quadriceps (Q) and hamstring (H) muscles have any effect on anaerobic power (AP). Methods: Sixteen healthy males were included in the study voluntarily. Muscle facilitation and muscle inhibition techniques were performed on the Q and H muscles of both the right and left sides by applying KT in the reverse direction, and AP parameters were measured using a Wingate ergometer. In trial 1 (Baseline), KT was not applied to the participants. In trial 2 (KT), the muscle facilitation technique was applied on the vastus medialis muscle in the Q of both legs, and the muscle inhibition technique was applied on the biceps femoris and semimembranosus muscles in the H, and AP performances of the participants were taken. The SPSS 22.0 software was used for statistical analysis. Paired sample t-test was used to analyze the differences between trials. Results: KT gave higher values than Baseline with regards to peak power, relative peak power, average power, and relative average power (p < 0.05). In addition, as a result of the KT application, there were minor improvements in minimum power, relative minimum peak power, power drop, and peak power %. However, these differences were not statistically significant (p > 0.05). Conclusions: It was observed that KT applied in the reverse direction on the Q and H muscle groups had a positive effect on AP. It was considered that this effect associated with the reverse KT application stemmed from the different tensions that decreased the neuronal threshold, which in turn ensured faster and easier stimulation of motor units and increased the muscle reflex, leading to a positive effect on AP.
AtıfScopus1WoS1İncele - MakaleAçık Erişim2021Scopus SJRQ4Performance evaluation of beekeeping farms: A case study from Gümüşhane, Turkey
Dogan, Nilgun; Adanacioglu, Hakan
The main purpose of this study is to determine the economic performance of the beekeeping farms. For this purpose, a survey was done in Kelkit County, in northeastern Turkey. The performances of the beekeeping farms were evaluated by cost, profitability and efficiency analysis. The cost of a unit of honey was US$3.16 and the average price paid to the beekeepers was US$6.78. The absolute and relative profits were calculated as US$3.62 and US$2.14, respectively. The efficiency of the beekeeping farms was measured using Data Envelopment Analysis. The results of output- and input-oriented constant return-to-scale (CRS) analysis indicated an average efficiency value of 59.34%. The output- and input-oriented variable return-to-scale (VRS) analysis showed average efficiencies of 75.42% and 78.95%, respectively. The efficiency of the beekeeping farms and the beekeeping experience were positively correlated. Both the output- and input-oriented VRS analysis showed that a significant part of the beekeeping farms would approach full effectiveness with a potential improvement of at least 10% both in gross production value, number of hives and variable costs. Improvement suggestions for outputs and inputs are directed towards reduction of all variables except gross production value. Copyright 2021 Zoological Society of Pakistan.
AtıfScopus5WoS4OpenAlex7İncele - MakaleYalnız künye2020Scopus SJRQ1A study on the variations of recent seismicity in and around the Central Anatolian region of Turkey
Öztürk, S.
Variations of the recent seismicity in and around the Central Anatolian region of Turkey were evaluated based on the seismic b-value, standard normal deviate Z-value, GENAS modelling, annual probabilities and return periods of the earthquakes. The catalog includes 16,702 earthquakes between 1974 and 2019 with magnitudes from 1.0 to 6.3. Time distribution of b-value shows that there is a tendency to decrease after the year of 2002 and b-value decreased from 1.58 ± 0.03 to 1.25 ± 0.05 at the beginning of 2019. Annual probabilities for magnitude ranges of 3.0–4.0 have the values between 3 and 30. Return periods for magnitude levels of 5.0–5.5 have the values from 5 to 20 years, and a value of 80 years for magnitude level of 6.0. The GENAS results show the significant temporal variations in the number of earthquakes smaller and larger than specific magnitude intervals by supplying the beginning periods of increases and decreases in the earthquake activity rate. Remarkable reductions in region-time distribution of b-value at the beginning of 2019 were detected in the regions covering Niğde fault and its vicinity along the south, west, northwest and southwest directions, among the Mut Fault Zone, Karsantı-Karaisalı Fault Zone and Karataş-Osmaniye Fault Zone, in and around Sürgü fault and along its northwest direction, between Sürgü fault and East Anatolian Fault Zone. Significant seismic quiescence areas in Z-value distribution include the northwest ends of the Tuzgölü Fault Zone and study area including Akpınar fault, the northeast of Salanda fault, between Salanda fault and the Central Anatolian Fault Zone, the northeast parts of the Central Anatolian Fault Zone, the west of Malatya fault, between Sürgü fault and the East Anatolian Fault Zone, the southeast end of the Tuzgölü Fault Zone, Karsantı-Karaisalı Fault Zone and its vicinity, the southwest of Tuzgölü. Thus, these anomaly areas observed in the Central Anatolian region and its vicinity at the beginning of 2019 may be one of the most likely zones for the next strong/large earthquake occurrences.
AtıfScopus27WoS21OpenAlex24İncele - MakaleAçık Erişim2020Political will, political skill, network resources and personal reputation: A serial two-mediator model
Demirbağ, Orkun; Demir, Hale Cide; Yozgat, Uğur
Purpose: Although social capital and positive reputation in organizations are essential for career success, there is a limited perspective in the literature on the political characteristics (motivation and ability) that enable one to acquire and develop the two elements. This study seeks to investigate the sequential role of political skill and network resources as serial mediators of the political will-personal reputation relationship. Methodology: In total, what provided data for the study were 457 sales executives from 13 different sectors in the cities of İstanbul, Kocaeli, and Bursa, which is an economically leading region of western Turkey. Executives rated their political will, political skill network resources, and personal reputation. Based on the complementary theories of political influence, social network, and signaling, we analyzed the relationships between constructs with structural equation modeling. Findings: Political skill mediated the relationship between political will and network resources, network resources mediated the relationship between political skill and personal reputation, while political skill and network resources sequentially mediated the relationship between political will and personal reputation. Implications: The data were collected from a single source. Practical Implications: Political will, political skill training, and social networks may help individuals manage their personal reputation at work, thus benefiting their careers. Originality/Value: This is one of the first studies to sequentially investigate how individuals' characteristics (motivation and ability) develop their social network and personal reputation at work. Moreover, theories of political influence, social capital, and signaling were jointly used for the first time ever.
AtıfScopus4WoS4OpenAlex6İncele - BildiriYalnız künye2020Duplicated Audio Segment Detection with Local Binary Pattern
Kucukugurlu, Busranur; Ustubioglu, Beste; Ulutas, Guzin
Due to the advantages of convenience, and difficulty of detection, copy-move forgery is one of the most common audio forgery forms. It is significant to decide whether there is a duplicated segment in the audio. In order to detect copy-move forgery, a new method is proposed in this paper. In the proposed algorithm, first the audio is segmented into syllables using a pitch tracking method. Second, each syllable analyzed with a 1-D local binary pattern operator. This operator calculates the histogram of each syllable. Mean square error is used to compute the similarities of histograms. The syllables which have similar histograms are detected as forged audio segments. Compared to another 1-D local binary pattern method, the proposed method has better detection results for copy-move forgery. Our experiments show that the proposed algorithm is feasible and effective, and robust against many common postprocessing operations such as noise addition, filtering, and compression.
AtıfScopus11WoS8OpenAlex9İncele
