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Permanent URI for this collectionhttps://hdl.handle.net/20.500.12573/1338

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Combustion synthesis and photoluminescence properties of CaAl2O4 : Eu2+, Y3+ based long lasting nanophosphors
(KOREAN ASSOC CRYSTAL GROWTH, INCSUNGDONG POST OFFICE, P O BOX 27, SEOUL 133-600, SOUTH KOREA, 2014) Halefoglu, Yusuf Ziya; Serindağ, Osman; AGÜ; Serindağ, Osman
Phosphorescent materials are known as long lasting materials including lanthanide atom doped nano particles which recently have found wide application field. Phosphorescent, classically, is the materials which have light emission in visible region of electromagnetic spectrum on removal of excitation effect such as radiation, electron beam, electrical field, temperature etc. A novel red long lasting phosphor CaAl2O4 : Eu2+, Y3+ nano phosphors have been prepared using a combustion method. The crystallization, particle sizes and luminescence properties of the samples have been investigated systematically by using powder X-ray diffraction, scanning electron microscopy, luminescence spectrophotometer and FT-IR.
Comparison of Photocatalytic and Adsorption Properties of ZnS@ZnO, CdS@ZnO, and PbS@ZnO Nanocomposites to Select the Best Material for the Bifunctional Removal of Methylene Blue
(AMER CHEMICAL SOC, 2025) Bayram, Umit; Ozer, Cigdem; Yilmaz, Erkan; 0000-0001-8760-8024; 0000-0001-8962-3199; AGÜ; Bayram, Umit
In this study, photocatalytic- and adsorption-based removal processes were conducted, which are frequently preferred in wastewater treatment due to their ease of control and high removal efficiency. An innovative method aimed at wastewater treatment was developed by combining the advantages of these two distinct approaches within the same material. The study synthesized ZnO, ZnS, CdS, PbS, and their composite structures (ZnS@ZnO, CdS@ZnO, and PbS@ZnO) using a hydrothermal synthesis method. Characterization of the samples was performed through field emission-scanning electron microscopy (FE-SEM), FE-SEM-energy dispersive X-ray (FE-SEM-EDX), X-ray diffraction (XRD), Raman spectroscopy, and Fourier-transform infrared spectroscopy (FTIR) measurement. Additionally, the optical properties of all samples (absorption spectra and band gap) were investigated by using absorbance measurements obtained from ultraviolet (UV)-visible absorption spectroscopy. Although ZnO nanoparticles are among the materials with high photocatalytic properties (exhibiting a photodegradation efficiency of 95.8% in a short duration of 90 min), their adsorption properties are low. Therefore, with the aim of enhancing both the low adsorption values and the photocatalytic properties of pure metal sulfides (ZnS, CdS, PbS), nanocomposites ZnS@ZnO, CdS@ZnO, and PbS@ZnO with different morphologies were synthesized, and their photocatalytic and adsorption-based removal performances on methylene blue (MB) dye were investigated. FE-SEM images indicated that ZnS nanoparticles exhibit a spherical morphology, CdS nanoparticles have a flower-like morphology, and PbS nanoparticles display a dendritic-like structure. The results obtained from experimental studies demonstrated that the highest efficiency in both photocatalytic- and adsorption-based removal was achieved with the ZnS@ZnO nanocomposite. The degradation rates of MB were found to be 95.3, 90.5, and 89.4% for the heterojunction composites ZnS@ZnO, CdS@ZnO, and PbS@ZnO, respectively, over a time range of 0-480 min. The optimal amount of photocatalyst that could effectively degrade MB was determined to be 100 mg, and the reusability studies revealed that the ability of the ZnS@ZnO semiconductor heterojunction photocatalyst to decompose MB into simpler molecules was limited after the fourth cycle. The adsorption-based removal rates were 96.0, 30.5, and 19.4% for the heterojunction composites ZnS@ZnO, CdS@ZnO, and PbS@ZnO, respectively. Finally, parameters influencing the adsorption-based removal of MB, such as pH, mass, and contact time, were examined, indicating that the adsorption capacity of ZnS@ZnO remained unchanged after reaching a value of 40 mgg-1.
Course of unborn baby's heart by wireless baby tracking system
(IEEE Computer Society, 2013) Özbilen, Metin Mete; Yigit, Enes; Isiker, Hakan; Kaplanoglu, Mustafa; AGÜ; Özbilen, Metin Mete
The most important problem for pregnant and gynecologist is tracking of unborn baby. An important part of infant deaths occur in the last months of pregnancy. For this reason, by using an external fetal monitor non-stress test (NST) measurements are done for gathering information about the baby's condition. This method is a procedure that requires specialist from a medical center. The proposed study aims wirelessly transmission of NST measurement results to the specialist or health center. Thus, in case of any particular problems by giving notice to the patient, it is intended to provide her being shipped to the nearest medical facility.
Directional Solidification of Al-Si-Ti Irregular Ternary Eutectic Alloy and Thermophysical Properties
(SPRINGER, 2022) Bayram, Umit; 0000-0001-8760-8024; AGÜ; Bayram, Ümit
Directional solidification of Al–11.75 wt pct Si–2.15 wt pct Ti irregular eutectic alloy which has an 843.83 K melting point, was done with different growth rates (V = 8.51 to 2065.18 µm s−1) at a temperature gradient (G) of 8.36 K mm−1 using Bridgman-type directional solidification apparatus (BTDSA). Scanning electron microscopy (SEM)—Energy dispersive X-ray (EDX) and X-ray diffraction (XRD) were used to characterize all phases forming the alloy. The average values of interflake spacing (λT) were measured from transverse sections of the directionally solidified samples with standard techniques. The dependency of λT was experimentally obtained using linear regression analysis for low, high, and all growth rates. It was observed that the λT values tended to decrease with increasing V values; therefore, the interflake structures came closer. The fusion enthalpy (ΔHf) and specific heat difference between solid and liquid (ΔCp) for the Al–Si–Ti eutectic alloy were found as 376.12 J g−1and 0.659 J g−1 K−1, respectively, by the differential scanning calorimetry (DSC). All results obtained in the present work were compared with the eutectic theory and the Al-based similar experimental results in the literature.
The effect of seed sludge type on aerobic granulation via anoxic-aerobic operation
(TAYLOR & FRANCIS LTD2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND, 2014) Erşan, Yusuf Çağatay; Erguder, Tuba Hande; 0000-0003-4128-0195; 0000-0003-4128-0195; AGÜ; Erguder, Tuba Hande
The effects of two seed sludge types, namely conventional activated sludge (CAS) and membrane bioreactor sludge (MBS), on aerobic granulation were investigated. The treatment performances of the reactors were monitored during and after the granulation. Operational period of 37 days was described in three phases; Phase 1 corresponds to Days 1-10, Phase 2 (overloading conditions) to Days 11-27 and Phase 3 (recovery) to Days 28-37. Aerobic granules of 0.56 +/- 0.23 to 2.48 +/- 1.28mm were successfully developed from both MBS and CAS. First granules appeared on Day 9 in both reactors, indicating that there was no difference between two seed sludge types in terms of the time period for granulation initiation. The results revealed that the granules developed from MBS performed better than CAS in terms of settleability, stability, biomass retention, adaptation, protection of granular structure at high loading rates (0.86 gN/L d and 3.92 gCOD/Ld) and low COD/TAN ratio (5). Granules of MBS were also found to be capable of providing better protection for nitrifiers at toxic free-ammonia concentrations (38-46 mg/L NH3-N), thus showing better treatment recovery than those of CAS.
Examining Tongue Movement Intentions in EEG-Based BCI with Machine and Deep Learning: An Approach for Dysphagia Rehabilitation
(Sciendo, 2024) Aslan, Sevgi Gökçe; Yılmaz, Bülent; 0000-0001-9425-1916; AGÜ; Aslan, Sevgi Gökçe
Dysphagia, a common swallowing disorder particularly prevalent among older adults and often associated with neurological conditions, significantly affects individuals' quality of life by negatively impacting their eating habits, physical health, and social interactions. This study investigates the potential of brain-computer interface (BCI) technologies in dysphagia rehabilitation, focusing specifically on motor imagery paradigms based on EEG signals and integration with machine learning and deep learning methods for tongue movement. Traditional machine learning classifiers, such as K-Nearest Neighbors (KNN), Support Vector Machine (SVM), Decision Tree, Naive Bayes, Random Forest, AdaBoost, Bagging, and Kernel were employed in discrimination of rest and imagination phases of EEG signals obtained from 30 healthy subjects. Scalogram images obtained using continuous wavelet transform of EEG signals corresponding to the rest and imagination phases of the experiment were used as the input images to the CNN architecture. As a result, KNN (79.4%) and SVM (63.4%) exhibited lower accuracy rates compared to ensemble methods like AdaBoost, Bagging, and Random Forest, all achieving high accuracy rates of 99.8%. These ensemble techniques proved to be highly effective in handling complex EEG datasets, particularly in distinguishing between rest and imagination phases. Furthermore, the deep learning approach, utilizing CNN and Continuous Wavelet Transform (CWT), achieved an accuracy of 83%, highlighting its potential in analyzing motor imagery data. Overall, this study demonstrates the promising role of BCI technologies and advanced machine learning techniques, especially ensemble and deep learning methods, in improving outcomes for dysphagia rehabilitation.
Exploring transdisciplinary interaction in higher education: urbanism through informal learning environment
(EMERALD GROUP PUBLISHING LTD, 2025) Kesim, Berk; Bengu, Elif; 0000-0001-8772-4084; 0000-0001-9817-7207; AGÜ; Bengu, Elif
PurposeThis study aims to explore interdisciplinary and transdisciplinary interactions around sustainability, focusing on the United Nations sustainable development goals (SDGs). By using the city as an informal learning space, it presents a case study to raise SDG awareness, promote interdisciplinarity, foster critical thinking and empower students.Design/methodology/approachUsing qualitative content analysis, this study explores students' interdisciplinary engagements. The research centers on student-created Logbooks, combining field data for analysis via open coding.FindingsThe informal setting facilitates transdisciplinary interaction and enriches interdisciplinary skills while retaining individuals' disciplinary tendencies.Research limitations/implicationsFactors like local geographical conditions and participant numbers could lead to minor variations in future course applications. Although initial problem topics and discussions are confined to local urban geography, they might diversify during implementation.Practical implicationsThe Logbook serves as a guide for local urban issues and embodies interdisciplinary outcomes. It can be enhanced with maps and problem zoning.Social implicationsDemonstrates effective SDG integration into higher education.Originality/valueThis study spotlights interdisciplinary learning within an unconventional context - urbanism - bridging student gaps. Supported by a paradigm shift from sustainability to unsustainability, it underscores the significance of critical engagement with SDGs.
Historicisizing World System Theory: Sugar and Coffee in Caribbean and in Chiapas
(Gaziantep Üniv. Sosyal Bilimler Enst., 2018) Balkılıç, Özgür; 0000-0001-6929-2548; AGÜ; Balkılıç, Özgür
The world system theory has been developed during the 1960s and 1970s in order to explain the economic, political and cultural relationship between developed, developing and underdeveloped countries. The main assumption of this theory is that economic and political dynamics which have progressed from the late 16th century towards contemporary ages resulted in unequal and dependent relations between these countries. Consequently, while an advanced economy and consolidated democratic-political institutions emerged in the developed countries, the developing and underdeveloped countries whose natural resources and economic assets are being exploited by the core countries are subjected to a backward economy and politically unstable systems. However, the world system theory has not gone unchallenged; on the contrary, a considerable amount of social scientists accused it of being overwhelmingly functionalist. The main weaknesses of this theory are that it ignores the local Dynamics and it, related with the first point, reduces the lower classes to the passive recipients of historical transformations. In order to fulfill these gaps in the theory, several scholars, in an attempt to explain the expansion of capitalism in non-Western regions, focus on the local dynamics of commodity chains and labor processes in these localities. Following this criticism, this paper argues that the historical development of sugar and coffee production, both of which are the most important commodities of the world trade from the early 16th century cannot be explained ignoring the local dynamics and that the local aspect of labor strategies which are designed to keep the potential producers in the land and production process must be analyzed as an important factor in the historical development of the production of these two commodities. In doing so, the article will analyze the development of labor processes and strategies in sugar and coffee production in Caribbean in the 16th and 17th centuries and Mexico-Chiapas in the 19th century, respectively.
Impact of sustainable energy, fossil fuels and green finance on ecosystem: Evidence from China
(ELSEVIER, 2024) Wang, ZuoTeng; Zeng, Sheng; Khan, Zohan; AGÜ; Khan, Zohan
The adoption of sustainable energy has increased as a substitute for petroleum derivatives due to growing concerns about environmental degradation caused by pollution and non-renewable energy sources. This study aims to investigate the impact of sustainable energy, green finance, and fossil fuels on the ecology of China. Instead of using traditional intermediaries like CO2 and EF, we employed the ecosystem habitat index to evaluate the conservation of terrestrial ecosystems. This index measures the extent of habitat destruction, deterioration, and fragmentation. The research demonstrated that implementing ecological power and green finance in China has enhanced the country's ability to safeguard and enhance its ecosystem in the short and long term. Furthermore, the findings suggest that using non-renewable energy sources in China has heightened the risk to biodiversity and the ecosystem. The analysis indicates that prioritizing green funding and renewable energy sources is crucial for policymakers, legislators, and investors to safeguard and enhance ecosystem diversity.
Investigation of corrosion inhibition effect of 3-[(2-hydroxy-benzylidene)-amino]-2-thioxo-thiazolidin-4-one on corrosion of mild steel in the acidic medium
(ELSEVIER, 2013) Döner, Ali; Şahin, Ece Altunbaş; Kardaş, Gülfeza; Serindaĝ, Osman; AGÜ; Serindaĝ, Osman
The corrosion behavior of mild steel (MS) in 0.5M H2SO4 was studied using 3-[(2-hydroxy-benzylidene)-amino]-2-thioxo-thiazolidin-4-one (HBTT) as inhibitor using the conventional potentiodynamic polarization studies, linear polarization studies (LPR), electrochemical impedance spectroscopy studies (EIS). SEM was utilized for surface characterization. The results showed that HBTT posses excellent inhibition effect towards MS corrosion. The inhibitor molecules were first adsorbed on the MS surface and blocking the reaction sites available for acid attack. Adsorption of inhibitor was found to obey Langmuir isotherm and was more chemical than physical.
A mathematical model with piecewise constant arguments of colorectal cancer with chemo-immunotherapy
(PERGAMON-ELSEVIER SCIENCE LTD, 2023) Bozkurt, Fatma; Yousef, Ali; Bilgil, Halis; Baleanu, Dumitru; AGÜ; Yousef, Ali
We propose a new mathematical model with piecewise constant arguments of a system of ODEs to investigate the growth of colorectal cancer and its response to chemo-immunotherapy. Our main target in this paper is to analyze and represent the I.S.'s (immune system) efficiency during the chemotherapeutic process. Therefore, we proved and illustrated the necessity of IL-2 that supports the immune system, especially in early-detected cases of tumor density. Thus, the constructed model has been divided into sub-systems: the cell populations, the effects of the medications doxorubicin, and IL-2 concentration.Firstly, we analyze the stability of the equilibrium points (disease-free and co-existing) using the RouthHurwitz criteria. In addition, our study has shown that the system undergoes period-doubling, stationary and Neimark-Sacker bifurcations based on specific conditions. In the end, we illustrate some simulations to assist the theory of the manuscript.
New proofs of Fejer's and discrete Hermite-Hadamard inequalities with applications
(Ankara Üniv. Fen Fakültesi, 2023) Sekin, Çağla; Tamar, Mehmet Emin; Aliyev, İlham A.; 0000-0001-8933-8769; AGÜ; Tamar, Mehmet Emin
New proofs of the classical Fejer inequality and discrete HermiteHadamard inequality (HH) are presented and several applications are given, including (HH)-type inequalities for the functions, whose derivatives have inflection points. Morever, some estimates from below and above for the first moments of functions f : [a, b] → R about the midpoint c = (a+b)/2 are obtained and the reverse Hardy inequality for convex functions f : (0, ∞) → (0, ∞) is established
Overcoming the Obstacles of Peace Education through Wellbeing Practices
(Adıyaman Üniversitesi, 2021) Bengü, Elif; Bilgin, Gülistan Gursel; 0000-0001-9817-7207; AGÜ; Bengü, Elif
A growing body of literature reports structural, cultural, social, and political barriers making it challenging and stressful to integrate peace education in teacher education and in-service teacher education programs. To support peace educators in achieving what they stand for, this study proposes integrating wellbeing practices and approaches into the curricula. Drawing from the fields of peace education, educational leadership and policy studies and higher education, this study examines wellbeing as a potentially promising scholarly field to support peace education scholarship. For happiness and life satisfaction, wellbeing links a person's physical, mental, emotional and social health factors not just to internal factors such as optimism, resilience and self-esteem but also external factors such as income, satisfaction at work and social networks. In order to explore the ways wellbeing can contribute to peace education, we first expand on peace education as a controversial and challenging practice especially for practitioners in the field. Next, we discuss wellbeing practices as they relate to educational settings. Finally, we discuss that peace educators can be supported by wellbeing practices to overcome the degrading and demotivating effects of their practices.
Raising Awareness of Sustainable Development Goals in Higher Education Institutions
(TURKISH EDUCATIONAL ADMIN RESEARCH & DEVELOPMENT ASSOC, 2024) Suklun, Harika; Bengu, Elif; 0000-0003-1016-268X; 0000-0001-9817-7207; AGÜ; Bengu, Elif
Higher education institutions play a crucial role in advancing sustainable development goals. They bear the responsibility of informing and encouraging all stakeholders, including faculty members, students, and industry partners, to collaborate towards achieving these goals. While many universities are integrating Sustainable Development Goals into their operations and educational programs, there is an increasing need to establish collaborative platforms with private sectors and nongovernmental organizations to further champion this agenda. Educating the future workforce is a key responsibility of these institutions, and they should actively raise students' awareness of these goals, enabling them to develop competencies related to sustainability. This study aims to explore how higher education institutions can effectively raise awareness of sustainable development goals. In addition, the research contributes to the literature by presenting a curriculum designed in a Turkish higher education institution to foster awareness of sustainable development goals. The findings hold the potential to significantly enrich existing literature on awarenessraising practices and the promotion of sustainability strategies, extending beyond higher education institutions to organizations at large.
Staging of the liver fibrosis from CT images using texture features
(2012) Kayaalti, Ömer; Aksebzeci, Bekir Hakan; Karahan, Ibrahim Ö.; Deniz, Kemal; Öztürk, Menmet; Yilmaz, Bülent; Kara, Sadik; Asyali, Musa Hakan; 0000-0003-2954-1217; 0000-0001-7476-8141; AGÜ; Aksebzeci, Bekir Hakan; Yilmaz, Bülent; Asyali, Musa Hakan
Even though liver biopsy is critical for evaluating chronic hepatitis and fibrosis, it is an invasive, costly, and difficult to standardize approach. The developments in medical image processing and artificial intelligence methods have advanced the potential of using computer-aided diagnosis techniques in the classification of liver tissues. The aim of this study was to develop a non-invasive, cost-effective, and fast approach to specify fibrosis stage using the texture properties of computed tomography images of liver. Gray level co-occurrence matrix, discrete wavelet transform, and discrete Fourier transform were the image analysis tools in the feature extraction phase. Following dimension reduction of the texture features support vector machines and k-nearest neighbor methods were used in the classification phase of this study. Our results showed that our approach is feasible in fibrosis staging especially in pairwise stage comparisons with success rate of approximately 90%.
T.C. SAĞLIK BAKANLIĞI’NIN MOBİL SAĞLIK UYGULAMALARININ BİLİNİRLİĞİNE YÖNELİK BİR ARAŞTIRMA
(Süleyman Demirel Üniversitesi, 2022) Çizmeci, Bülent; Yayla, Elif Nisa; 0000-0002-4343-0954; 0000-0002-7722-6003; AGÜ; Çizmeci, Bülent
When today's mobile healthcare market is examined, applications developed for every age and need can be found. Within the scope of the study, it is aimed to evaluate the awareness, purpose and frequency of m-Health applications developed by the Ministry of Health of the Republic of Turkey, which keeps up with change and development. Among people who use mobile devices and reside in Turkey, 1,078 participants are reached with easy sampling method. The questionnaires used as data collection tools are carried out online on 18-31 January 2021 and only those that can be used are included in the study and analyzed with the SPSS Program. The Cronbach's Alpha Value of the study is determined as 0.757. It is observed that 28.8% of the participants use the applications at least once a month, 60.8% of them are aware of their use via the internet, 93% use them via mobile phones, and 97.6% recommend them to their acquaintances. Considering the awareness and use of the applications, it is found that the rates of applications other than e-Nabız, MHRS, Hayat Eve Sığar and City Hospitals mobile applications are lower. Considering the popularity and usage rates of m-health tools, it is recommended to conduct new researches on health literacy in order to determine the needs, development and promotion activities of these tools, to identify usage problems and to use them effectively. Considering the results of the study, it is thought that it will make significant contributions to the literature in terms of theoretical, practical and administrative development of the applications as the first comprehensive study conducted for m-Health tools.
Triple Sampling Inference Procedures for the Mean of the Normal Distribution When the Population Coefficient of Variation Is Known
(MDPI, 2023) Alhajraf, Ali; Yousef, Ali; Hamdy, Hosny; 0000-0002-8824-5947; AGÜ; Yousef, Ali
This paper discusses the triple sampling inference procedures for the mean of a symmetric distribution-the normal distribution when the coefficient of variation is known. We use the Searls' estimator as an initial estimate for the unknown population mean rather than the classical sample mean. In statistics literature, the normal distribution under investigation underlines almost all the natural phenomena with applications in many fields. First, we discuss the minimum risk point estimation problem under a squared error loss function with linear sampling cost. We obtained all asymptotic results that enhanced finding the second-order asymptotic risk and regret. Second, we construct a fixed-width confidence interval for the mean that satisfies at least a predetermined nominal value and find the second-order asymptotic coverage probability. Both estimation problems are performed under a unified optimal framework. The theoretical results reveal that the performance of the triple sampling procedure depends on the numerical value of the coefficient of variation-the smaller the coefficient of variation, the better the performance of the procedure.
Vision-Based Autonomous Aerial Refueling
(American Institute of Aeronautics and Astronautics Inc, AIAA, 2022) Erkin, Tevfik; Abdo, Omer; Sanli, Yilmaz; Celik, Harun; Isci, Hasan; AGÜ; Sanli, Yilmaz
Aerial refueling tasks are very challenging due to the high risk of aircraft close proximity. Currently, within the drogue-probe method, the receiver aircraft pilot manages the refueling task in accordance with the tanker aircraft pilot. Therefore, autonomous aerial refueling is still an unaccomplished task for aircrafts. In this paper, a fully automated aerial refueling procedure based on digital visual inspection is proposed. A nonlinear dynamic model of receiver aircraft is derived to track the motion of drogue. In order to control the receiver aircraft affected by tanker aircraft vortex during approach, and ensure the receiver aircraft to automatically track and dock the tanker aircraft, an autopilot system that considers visual sensing of drogue motion is designed. The receiver aircraft is controlled by the autopilot system via translational motion of tanker aircraft projected by a camera mounted on the receiver aircraft. Thanks to this vision-based controllers, the need of tanker aircraft positioning is denied since camera projection has the capability of perception of three-dimensional direction of tanker aircraft. In order to test the autopilots include vision-based controllers and algorithms, the vision-based autonomous aerial refueling is operated under presence of turbulence and vortex. Finally, the simulation results demonstrate that the proposed guidance-navigation-control system achieve aerial refueling autonomously, and make it feasible and realizable for aircrafts.
Within our walls: White-collar crime in Greek academia
(Taylor and Francis, 2015) Georgoulas, Stratos; Voulvouli, Aimilia; AGÜ; Voulvouli, Aimilia
The study of white-collar crime remains a central concern for criminologists around the world and research concentrates on its nature, prevalence, causes and responses. However, most books on white-collar crime tend to focus on Anglo-American examples, which is surprising given the amount of rich data and research taking place in mainland Europe. This new handbook seeks to reset the balance and, for the first time, presents an overview of state-of-the-art research on white-collar crime in Europe. Adding to the existing Anglo-American body of knowledge, the Handbook will discuss specific European topics and typical European features of white-collar crime. The Routledge Handbook of White-Collar and Corporate Crime in Europe consists of more than thirty chapters on topics ranging from the Icelandic Banking Crisis, to the origins of the study of white collar crime, to contemporary topics, such as white-collar crime in countries post-transition from communist regimes; the illegal e-waste trade and white-collar crime in professional football. Furthermore, the book contains extensive case study analyses of landmark European cases of white-collar crime. The editors have gathered together the leading voices in the field and a final section offers commentaries on white-collar crime in Europe from eminent criminologists David Friedrichs and Hazel Croall. This Handbook will thus serve as a work of reference for all scholars and students engaged in the study of corporate and white-collar crime and will also set out directions for new research in the future.

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