In this paper, we introduce the concepts of Pythagorean fuzzy valued neutrosophic set (PFVNS) and Pythagorean fuzzy valued neutrosophic (PFVNV) constructed by considering Pythagorean fuzzy values (PFVs) instead of numbers for the degrees of the truth, the indeterminacy and the falsity, which is a new extension of intuitionistic fuzzy valued neutrosophic set (IFVNS). By means of PFVNSs, the degrees of the truth, the indeterminacy and the falsity can be given in Pythagorean fuzzy environment and more sensitive evaluations are made by (...) a decision maker in decision making problems compared to IFVNSs. In other words, such sets enable a decision maker to evaluate the degrees of the truth, the indeterminacy and the falsity as PFVs to model the uncertainty in the evaluations. (shrink)

Göçmenlerin farklı kimliklere sahip olmaları ötekileştirilme deneyimlerini arttırmaktadır. Başka bir deyişle; göçmenlerin farklı kültürel, etnik ya da dini kimliklere ilişkin olarak ötekileştirilmeleri daha olasıdır. Bu önermenin sonucu olarak ötekileştirme, onunla mücadeleyi merkeze alan politikalar tarafından “aşılması olası” ve yapaylığı ima eden bir olgu olarak ele alınmaktadır. Bu çalışma; “öteki”nin varlığını kimliğin oluşumu açısından kaçınılmaz görerek ötekileştirmeyi “olumsuz bir doğal” yapan unsurun sosyal bilişsel bir süreç olan “stereotipleştirme” üzerinden okunması ve çözümün burada aranması gerektiği savını, Henri Tajfel ve John Turner’ın Sosyal (...) Kimlik Teorisini temel alarak günümüzde “öteki” sıfatının atfedildiği göçmenler bağlamında ele almaktadır. İnsanların tarih boyunca doğal, sosyal, politik ve ekonomik sebeplerle başvurduğu göç eyleminin günümüzde yoğun kitlesel hareketliliğe dönüşmesi göçmen kimliğinin görünürlüğünü arttırmış ve bu kimliği küresel ölçekte ötekileştirmenin nesnesi tayin etmiştir. Ötekileştirmenin psikolojik ve politik bileşenlerinin etraflıca tetkiki, söz konusu fenomenin toplumsal çıktılarının ayrıştırıcı etkisini bertaraf edebilmek için bir başlangıç noktasıdır. Bu gaye ile çalışmada ötekileştirme pratiğine farklı bir zaviyeden yaklaşılmış, ötekileştirmeyi toplumsal yaşam açısından olumsuz sonuçlara eviren bilişsel sürecin tespitleri göçmenler üzerinden değerlendirilmiştir. İlgili alanlarda teorik ve ampirik kaynakların taranması neticesinde edinilen bulgularla çalışma, sosyal psikolojik unsurların politik uygulamalara dâhil edilmesine dair yöntemlere ulaşma çabası ve toplumsal bütünlüğün tesis/muhafaza edilmesi için sunduğu politik psikolojik çözümler ile literatüre eklenmeyi hedeflemektedir. (shrink)

"Bu araştırmada Meraga Rasathanesi'nin kurucusu Nasîrüddin Tûsî'nin öğrencisi, meşhur alim, matematikçi, astronom ve İşrâkî filozof Kutbüddîn-i Şîrâzî'nin hayatı, eserleri, öğrencileri ile XIII. Yüzyılın son çeyreğinde İlhanlı nüfuzu altında bulunan Selçuklu Türkiye'sindeki faaliyetleri incelenmiştir. Şîrâzî, Sivas'ta kadılık ve Gök Medrese'de müderrislik yapmış, daha sonra İslamı kabul eden ilk İlhanlı hükümdarı Ahmed Tekudar tarafından elçi olarak Memluk sultanı Kalavun'a gönderilmiştir. Siyasi görevleri bununla sınırlı olmayan Şirazî, Argun Han tarafından Yakın-Doğu haritasını çizmekle vazifelendirilmiş, o da bu görevi başarıyla ifa ederek İlhanlı Devletinde önemli (...) bir konuma yükselmiştir. Ancak Şirazî bu siyasî görevleriyle pek anılmamaktadır. Nitekim onun ilim adamı sıfatı daha önde olmuş, siyaseti bazı nedenlerle tercih etmiştir. Şirazî Anadolu'da aklî ilimler sahasında dersler vererek Meraga matematik ve astronomi ekolunun buraya taşınmasını sağlamıştır. Daha sonra Tebriz'e giderek yetiştirmiş olduğu öğrenciler ve telif ettiği eserleriyle Anadolu, İran ve Türkistan coğrafyasında ilmî ve fikrî bir birliktelik oluşturmuştur. Daha sonra Semerkant matematik astronomi okulu mensuplarının Osmanlı ülkesine göçmeleriyle, Şirazî'nin astronomi ve matematik sahasındaki eserleri Osmanlı medreselerinde ders kitabı olarak okutulmuştur."--Back cover. (shrink)

Âlemin zaman içinde vücûda gelip gelmediğine dair tartışma düşünce tarihinde kadim bir geçmişe sahiptir. Platon öncesi döneme kadar izleri sürülen söz konusu tartışma İslâm düşünce tarihinde de önemli bir yer işgal eder. Kelam ile felsefe ekolleri arasında cereyan eden münazaralarda kelamcılar, âlemin yokluğu üzerinde bir zaman geçtikten sonra yaratıldığını ileri sürerken filozoflar ise Allah’ın âlemden zamansal olarak değil zatî bir öncelikle mukaddem olduğunu savunurlar. Klasik dönem sonrası devam eden tartışmalarda probleme dair yeni çözümler ortaya konulmuştur. Bu makale klasik dönem sonrası (...) İslam felsefesinin önemli simalarından biri olan Molla Sadrâ’nın hudûs anlayışını konu almaktadır. Kendinden önceki hudûs yaklaşımlarını değerlendiren Molla Sadrâ, hareket-i cevherî teorisi bağlamında probleme yeni bir yorum getirir. Hareket ve zamanı, seyyal varlığın birer boyutu olarak gören Sadrâ’ya göre hareketin bizzat kendisi anlamına gelen yaratmanın olmadığı mevhum bir zamanın varlığı söz konusu olamaz. Bu anlamda âlem, öncesinde yokluk olan muayyen bir zaman diliminde yaratıldığı anlamda hâdis değil, yaratmanın zaman mecrasında gerçekleştiği anlamda hâdistir. Metafiziğin en girift meselelerinden biri olan bu problem hakkında Molla Sadrâ’nın yorumu kelamcılar ile filozoflar arasında kısırdöngüye dönüşen tartışmalarda bir uzlaştırma ve inkişaf sadedinde görülebilir. (shrink)

Ikhwan-i Safa is known as a group of thinkers who wrote treatises in the style of the first scientific encyclopedia in the history of Islamic thought. Ikhwan-i Safa, which emerged in the vicinity of Basra at a time when religious and political conflicts were intense, aims to clean the religion, which they believe has moved away from its essence with false information and false thoughts, with philosophy. For this purpose, the Ikhwan's views on science and wisdom, who use all kinds (...) of religious, philosophical and scientific knowledge with an eclectic approach, are important in understanding the scientific understanding of the classical age of Islamic thought. Ikhwan-i Safa, who states that they are the heirs of every thought they find true, regardless of its source, advises its members not to be hostile to any of the sciences, not to turn their backs on any of the books, and not to be attached to any of the sects with bigotry. In this study, the approaches of İhvân-ı Safâ to the science of logic will be discussed within their understanding of science based on this broad acquis. According to Ikhwan-i Safa, who defines logic as the measure of philosophy and the instrument of the philosopher, since philosophy is the highest of human endeavours after Prophethood, logic, which is the measure of philosophy, must also be the highest of measures and instruments. In the study, it will be emphasized how the Ikhwan approached the science of logic in his treatises in the context of concept, proposition and syllogism, which are the main subjects of classical logic, and whether they made a unique contribution to this science. (shrink)

Ikhwan-i Safa is known as a group of thinkers who wrote treatises in the style of the first scientific encyclopedia in the history of Islamic thought. Ikhwan-i Safa, which emerged in the vicinity of Basra at a time when religious and political conflicts were intense, aims to clean the religion, which they believe has moved away from its essence with false information and false thoughts, with philosophy. For this purpose, the Ikhwan's views on science and wisdom, who use all kinds (...) of religious, philosophical and scientific knowledge with an eclectic approach, are important in understanding the scientific understanding of the classical age of Islamic thought. Ikhwan-i Safa, who states that they are the heirs of every thought they find true, regardless of its source, advises its members not to be hostile to any of the sciences, not to turn their backs on any of the books, and not to be attached to any of the sects with bigotry. In this study, the approaches of İhvân-ı Safâ to the science of logic will be discussed within their understanding of science based on this broad acquis. According to Ikhwan-i Safa, who defines logic as the measure of philosophy and the instrument of the philosopher, since philosophy is the highest of human endeavours after Prophethood, logic, which is the measure of philosophy, must also be the highest of measures and instruments. In the study, it will be emphasized how the Ikhwan approached the science of logic in his treatises in the context of concept, proposition and syllogism, which are the main subjects of classical logic, and whether they made a unique contribution to this science. (shrink)

This paper presents a cross‐cultural comparison of Protestant work ethic characteristics of practising Protestant British and practising Muslim Turkish managers using Mirels and Garrett’s Protestant work ethic scale. Max Weber’s Protestant work ethic thesis is used as the conceptual framework in this study. The nature of the Protestant work ethic thesis and its relationship with organisation culture is discussed. Multivariate and univariate analysis of variance were used to analyse the data. The results suggest that there is a significant difference between (...) practising Muslim Turkish managers and practising Protestant British managers: the Turkish group showed relatively higher Protestant work ethic scores than their Protestant counterparts. Possible reasons for the difference between British and Turkish groups are advanced in the light of Turkish economic, social and political developments. It is argued that representative Islamic sources also support the results of this research by pointing to the important role of a work ethic in Islam. (shrink)

It has long been suspected that attentional processes differ between olfaction and the other senses. Here, we test whether voluntary dishabituation, seen, for example, when we re-attend to the ticking of a clock, can occur in olfaction. Participants were seated in an odorized room, where at various intervals they had to evaluate what they could smell. An experimental group had one nostril open and the other closed, except during the evaluations, so that the closed side was subject to centrally driven (...) habituation, but not peripheral adaptation. A control group had both nostrils closed except during evaluations. Following exposure, the experimental group could not report the room's odor in either the centrally habituated nostril or the nostril that remained open, while the control group could. This effect could result from a number of causes, including olfaction's unique neuroanatomy, functional constraints imposed by detecting volatile chemicals, and as a consequence of limited cortical resources, with implications for the functional value of consciousness. (shrink)

Miracles are extraordinary events that occur in the hands of those who claim to be prophets and which cannot be repeated by others. By these miracles, the prophets prove to society that the truths they convey are of divine origin. The miracles bestowed upon prophets vary according to the scope of the message they deliver and the interests and relevance of the societies with which they deal. Accordingly, Islamic scholars have classified miracles into three groups. The miraculous events that appeal (...) to people’s senses and lead them to the truths they convey by captivating their astonishment are called emotional miracles. Such miracles are events that occur without cause by overcoming the laws of nature, which are in the realm of causes, through the direct intervention of Allāh. On the other hand, spiritual miracles are truths that arouse the interlocutor’s interest in moral conduct and rational conclusions rather than in his sensory perceptions. Since these truths are attained through contemplation, they are not confined to a particular time and place, as in the case of emotional miracles. Some Kalām scholars have also considered the Prophets’ revelational knowledge about events that have occurred in the past or will occur in the future as miracles. They have studied these events that a person could not bear in the past or could not predict for the future under the title of "The news miracle" Among these three types of miracles, scholars have considered spiritual miracles superior to the others both in terms of the breadth of their influence and their continuity. That Prophet Muhammad (PBUH) is the last of the prophets, and that the teachings he received through revelation remain valid until the Day of Judgment necessitates that some of the miracles bestowed upon him must be of a quality that attracts the attention of all people. For this reason, Islamic scholars have placed the permanent miracle of Prophet Muhammad in the category of spiritual miracles. Scholars agree that his greatest miracle that has astonished all humankind is the Qurʾān. The clearest proof of this are the verses in the Qurʾān that challenge the opponents to bring a similar one. Allāh commands the disbelievers first to bring a similitude of the Qurʾān (al-Isrāʾ 17:88), then the equivalent of ten surahs (Hūd 11:13), and finally any surah of the Qurʾān (al-Baqara 2:23). Thus, the deniers are made aware of their inability to meet this challenge under gradually mitigating circumstances. Although scholars agree on the Qurʾānic miracle’s reality, they have expressed different views on its nature and essence. Thus, some scholars have argued that the miracle of the Qurʾān does not arise from some properties special to it but from the direct intervention of Allāh in human who have the ability to bring something like it. Most Islamic scholars, on the other hand, pointed out that the Qurʾān has aspects that exceed human powers in various fields, and they explained the inability to reply in the same vein to the Qurʾān due to its uniquenesses. Accordingly, some scholars have argued that miracles are perceptible, but it is never possible to define them. Other scholars, however, viewed miracles as an identifiable phenomenon and stated that the Qurʾān is an unusual and unique book in terms of verses. In this article, the questions Why was the Quran sent down as a miraculous Kalam with an attribute not found in other divine books and in what way did the Qurʾān make people weak to have a similar of it? were scrutinized, thus, some fundamental questions regarding the nature and character of iʿdjāz al-Qurʾān are elucidated. Since the topic deals with history and literature, scanning sources and data analysis were mainly used as methods in the research. The results can be summerized as follows: Although the Prophet was supported by both emotional and mental miracles in proving the Prophetic case, his greatest miracle is the Quran. The miracle of the Qurʾān is different from the other miracles, based on both the challenging verses and the Prophet's explanations of the miracles. The reason for this difference lies in the fact that the miracle of the Qurʾān is based on reason, unlike the other miracles which are emotional. Most Islamic scholars who deal with the miracle of the Qurʾān emphasize the issues of rhetoric, verse, style, and content. At this point, they emphasized that the Qurʾān has a unique expression and content that cannot be surpassed. (shrink)

This paper compares attitudes towards achievement and power orientation as between Turkish, British and Irish managers and discusses the issue from a business ethics point of view. The concept of achievement and power orientation and its impacts on business ethics is discussed. This research is part of a larger cross‐cultural study that examines leadership styles and managerial attitudes in Britain, Turkey and Ireland. Intensive structured interviews were conducted for data gathering process. Results revealed that Irish and Turkish managers show a (...) higher achievement orientation level than their British counterparts. On one hand this situation may give some advantages to Turkish and Irish managers in developing leadership qualities, on the other hand, it can also lead to some difficulties in ethical business practices. Therefore, corporate social responsibility becomes a more important issue to be pursued in Turkey and Ireland. British and Irish managers, however, showed a higher power orientation level than Turkish managers. The low level of power orientation of Turkish managers can be explained by cultural and historical conditions that still affect modern Turkish society. Previous cross‐cultural studies support the results of this paper. (shrink)

This article explores micro- and macro-level variables that influence the incidence of bribery payouts by firms. A rich data set with information from 55 countries was utilized to achieve this objective. Results of logit regression models indicate that there are a number of micro- and macro-level factors that significantly affect the incidence of bribery payouts. This suggests that it is not only the characteristics of a firm but also the environment of doing business that affect the firm's bribery decision. The (...) results of this study provides information that may help firms develop strategies to reduce corruption in their respective industries and thereby improve their image of corporate social responsibility. The analysis also points to possible policy directions that governments could undertake in order to reduce the incidence of bribery in their country. (shrink)

Quine’s “Epistemology Naturalized” is the locus classicus of naturalism in epistemology. Many traditional epistemologists criticized the naturalization of epistemology specifically targeting this article. The critics argue that Quine abolishes the normativity of epistemology. For he proposes epistemology as a chapter of psychology. Laudan, like Quine, believes that epistemology should be naturalized. However, he criticizes Quine’s project of naturalization for similar reasons as Quine’s critics. Instead, he proposes a new project that he calls “normative naturalism”. In this work, I will first (...) argue against the critics of Quine and then argue that both Quine’s and Laudan’s naturalized epistemologies are hypothetically normative. -/- Quine’ın “Epistemology Naturalized” başlıklı makalesi epistemolojide doğallaştırma düşüncesinin klasik yapıtıdır. Pek çok geleneksel bilgi kuramcısı özellikle bu makaleyi hedef alarak epistemolojinin doğallaştırılmasını eleştirmiştir. Eleştirilerin odağında Quine’ın, psikolojinin bir alt bölümü haline getirerek, epistemolojinin normatifliğini ortadan kaldırdığı savı yer almaktadır. Laudan epistemolojide doğallaştırmanın gerekli olduğunu savunmasına karşın Quine’a yöneltilen bu eleştiriye katılmakta ve “normatif doğalcılık” adını verdiği yeni bir epistemolojik yaklaşım önermektedir. Bu çalışmada Quine’a yöneltilen eleştirinin yersiz ve Quine’ın doğallaştırılmış epistemolojisinin Laudan’ın normatif doğalcılığı gibi hipotetik normatif olduğunu tartışacağım. (shrink)

This paper compares attitudes towards achievement and power orientation as between Turkish, British and Irish managers and discusses the issue from a business ethics point of view. The concept of achievement and power orientation and its impacts on business ethics is discussed. This research is part of a larger cross‐cultural study that examines leadership styles and managerial attitudes in Britain, Turkey and Ireland. Intensive structured interviews were conducted for data gathering process. Results revealed that Irish and Turkish managers show a (...) higher achievement orientation level than their British counterparts. On one hand this situation may give some advantages to Turkish and Irish managers in developing leadership qualities, on the other hand, it can also lead to some difficulties in ethical business practices. Therefore, corporate social responsibility becomes a more important issue to be pursued in Turkey and Ireland. British and Irish managers, however, showed a higher power orientation level than Turkish managers. The low level of power orientation of Turkish managers can be explained by cultural and historical conditions that still affect modern Turkish society. Previous cross‐cultural studies support the results of this paper. (shrink)

Income distribution continues to be a major problem of the countries. Turkey is one of the countries that are in the high Gini Coefficient if we compare it with the EU members. It is known that Turkey has applied various economic policies to solve this problem. In order to ensure social justice the application of redistribution policies is the first solution that comes in mind. However, its implementation option is limited due to its negative effect on economic growth. The most (...) effective option to ensure social justice is to give importance to the education sector without compromising on the economic growth. In this study we will discuss, firstly, income distribution movements over the years and analyze its impact on the political economy. Especially in the time period of 1977-2014, the effects of an increase in the economic growth due to an increase in the number of primary, secondary and university graduates will be investigated by using the ARDL boundary test approach. The obtained finding of the long term relationship of these variables and the contribution of their relationship on the estimated result of an increase in the education index caused by a decrease in the Gini Coefficient that is shown in the form of improvement effects of income distribution. According to the findings in the literature the investments made for education in Turkey have made a significant contribution to the improvement of income distribution. Lastly, in order to increase the influence of education on economy some policy recommendations have been discussed in the study. (shrink)

Triage protocols can exclude older patients for the sake of effectiveness and this may be defended as the older have already had their fair share of life, which can mean fair amounts or complete lives. Nevertheless, if life is considered as a narrative, mentioning amounts might be nonsensical. Narratives have a quality of unity; so, life events are fragments whose meanings are dependent on the meaning of the whole. Thus, time units do not represent a reliable measure of the content (...) of life. In addition, people's experience is different from the external flow of time, making its significance relative. Moreover, to compare the completeness of lives qualitatively, it is necessary to have a common cultural understanding, which is improbable to agree on in a modern society. Therefore, basic assumptions of the accounts that refer to fair shares of lives are mistaken, and these accounts do not support age-based rationing. (shrink)

Ortaçağ İslam Dünyasında yöneten ve yönetilenler arasındaki bağı âlimler sağlamaktaydı. Sultan ve emirin halka adaletle muamele etmesini, Kuran-ı Kerim ve Sünnet-i Şerife göre yaşamasını ve toplumsal hayatı düzenlemesine yardımcı olurdu. Zaman içerisinde yöneticilerde görülen kusurların ortaya konulmasına yönelik çözüm önerileri sunan âlimler, eserler kaleme almaya başlamış ve bu eserlere siyasetname ve nasihatname denilmeye başlanmıştır. Bu eserlerden bazıları gayet hacimli olup sultana arz edilmekteydiler. Bazısı ise risale şeklinde ve daha kısa yazılarak toplumun huzurunu bozan veya toplumda çok acil çözülmesi gereken unsurları (...) ihtiva etmekteydi. Selçukluların XI. Yüzyıldan itibaren İslam Dünyasına geniş bir hâkimiyet sahası oluşturmaları üzerine siyasetname telifi artmıştı. XIII. Yüzyıl hadis âlimlerinden Ziyâeddin el-Makdîsî’nin yaşadığı Eyyubiler Dönemine kadar bu eser yazım türü yaygınlık kazanmıştır. El-Makdisî, Dimaşk Eyyubî meliki el-Melikü’l-Eşref Musâ’nın düşkün bir hayat sürmesi üzerine özellikle toplumda bozulmalar meydana gelmesi ve devlet yönetiminde zaafa düşülmesi gibi sebeplerle bir nasihatname yazmış ve halkın üzerindeki olumsuz etkileri azaltmayı gaye edinmiştir. Nasihatname sultanın konumuna uygun, yumuşak bir dille ve nazik bir üslupla kaleme alınmış olup eserde ayet ve sahih hadislere yer verilmiştir. (shrink)

Araştırmada lise öğrencilerinin geleneksel ve kültürel din algılarını belirlemek için uygun bir ölçek geliştirilmesi amaçlanmaktadır. Çalışma AFA için 324 ve DFA için 320 olmak üzere toplam 644 lise öğrencisiyle yürütülmüştür. Verileri toplamak için geleneksel ve kültürel din algısı ölçek formu (GEKDÖ) ile kişisel bilgi anketi kullanılmıştır. Uzman görüşleri ve pilot uygulama sonuçlarına göre AFA öncesi 35 maddeden oluşan bir ölçek formuna ulaşılmış ve uygulanmıştır. AFA sonrası 20 maddeden oluşan ölçek formu elde edilmiştir. DFA sonucu 4 madde ölçekten çıkarılarak 16 maddeli (...) son yapıya ulaşılmıştır. GEKDÖ, üç boyut (Kaynak ve Belirleyicilik Boyutu, Rehberlik ve Eğitim Boyutu ve Kültürel Boyut) ve 16 maddeden oluşmaktadır. Ölçeğin toplam varyansı %58,13 olarak bulunmuştur. Ölçeğin KMO değeri,938; Barlett test değeri, 4212,113’tür. Güvenirlik çalışmaları sonucunda Cronbach Alpha güvenirlik katsayısı,931; ikiye ayırma güvenirlik analiz değeri,833 ve boyutların ayırt edicilik düzeylerini belirlemek için %27’lik alt-üst grup puanları arasında yapılan t-test sonuçları sırasıyla t(88) = –43,51 –38,90 – 36,47 –30,94 p<,01 olarak tespit edilerek anlamlı bir farklılık olduğu görülmüştür. DFA sonuçları temel ölçüt olan model uyum indekslerini oldukça iyi düzeyde karşıladığı için oluşturulan yapının istatistiksel ve kuramsal açılardan da uygun olduğu değerlendirilmektedir. Sonuç olarak lise öğrencilerine yönelik geliştirilen 16 maddelik GEKDÖ’nün geçerli ve güvenilir olduğu belirlenmiştir. (shrink)

Khalīfa b. Khayyāt(d. 240/854-855) was an historian- muḥaddith in the ʿAbbāsid’s period. There are references in sources to his competence in history and lineage rather than Ḥadīth. Two works of him have survived. The first one is al-Ṭabaḳāt which is about study of men and the second one is al-Taʾrīkhwhich chronologically narratesthe events in the history of Islam until 232 AH. The latter is the most significant work to be applied for the historiography of ibnKhayyāt. In this article, Khalīfa b. (...) Khayyāt’s methodology in historiography is examined. In this study, the early period of Islamic histography is handled and the subject is discussed comparatively. The main characteristics of his historiography are his adoption of a chronological style that facilitates the follow-up of the book, his knowledge for the lineage of those who died in wars and the details about the wars. Also, among the charactersitics are his application of isnād to his history book as a muḥaddith, his knowledge for the previous resources via his teachers who belong to the schools of al-Madīna and ʿIrāḳ and when required, his usage of ayah, ḥadīth and poems. These issues are dealed in the artcile with examples. Besides, a study in the West about Khalīfa b. Khayyātasserts that he was a follower of Umayyad dynasty and so this affected his historiography. In this article, this assertion is tackled by analyzing the whole book and it concludes that it is not valid because of some narrations against this assertion.SummaryKhalīfa b. Khayyāt (d. 240 / 854-55), who grew up in Basra, one of the most important centers of scholarship of the time and the meeting point of scholars, and he continued his scholarly works in this city. Since his grandfather and father are engaged in the field of Ḥadīth, Khalīfa b. Khayyāt started his scholarly adventure at an early age and he took his first education in the field of Ḥadīth.Scholars, in the early periods, continued their studies in the fields of sciences related to each other. Khalīfa b. Khayyāt’s studies are also in this kind. Although there are references in sources to his accumulation of Ḥadīth, Khalīfa b. Khayyāt ’s main area of ​​expertise is history and nasab/genealogy. The fact that his works and references to him in later sources are largely related to historical events, knowledge of the nasab/genealogy, and wafayāt (death dates of Ḥadīth scholars and narrators) reveals his considerable knowledge on these issues. Khalīfa b. Khayyāt lived in the period of ʿAbbāsid caliphs al-Maʾmūn (813-833) and al-Muʿtaṣim (833-842). This period is important because of the fact that the al-Mihna incident took place and the pressure on the Ḥadīth scholars increased. Although Khalīfa b. Khayyāt is not one of the direct opponents of Muʿtazila, his participation in a debate against them provides clues about the place where he stands. The scholarly atmosphere of Basra, enabled Khalīfa b. Khayyāt to benefit from a wide range of teacher-student network. In addition to his professors from whom he benefitted in the field of Ḥadīth, he had the opportunity to obtain the knowledge and understanding of the history of that time through his teachers who are important historians of the period in his field. Two works related to Khalīfa b. Khayyāt whose reliability is confirmed by djarh wa l tadil scholars reached to our time. One of the oldest Ṭabaḳāt works in the history of Islam is al-Ṭabaḳāt; the other one is the book, al-Taʾrīkh, which provides a new method for Islamic historiography.This study deals with the principles of the method of historiography, which can be put forward through Khalīfa b. Khayyāt 's al-Taʾrīkh. al-Taʾrīkhis important in terms of being the first example of chronological writing type in Islamic historiography and has not been subject to any independent study to date. There are two ongoing M.A. thesis about Khalīfa b. Khayyāt, however, no study has been identified that directly deals with its methodology of history. On the other hand, based on some riwāyats/narrations in al-Taʾrīkh, there is a work that claims that Khalīfa b. Khayyāt had sympathy towards Umayyads. The study named “Khalīfa b. Khayyāt’s History on the Umayyad Dynasty (660-750), prepared by Carl Wurtzel as his PhD. Dissertation, examined the life of Khalīfa, partly the historiography and the religious-political narrations in the work. On the case of Muʿāwiya’s (d. 60/680) request of the allegiance to Yazīd (d. 64/683), Wurtzel compared an event that took place between the envoy of Ibn al-Zubayr (d. 73/692) and Muʿāwiya with al-Balādhurī’s (d. 279/892-93) narrative and concluded that Khalīfa was an Umayyad sympathizer. However, Khalīfa b. Khayyāt’s exclusion of an event such as al-Mihna which was against the ʿAbbāsid and changed the course of history in his book, shouldn’t be considered as a symptom of sympathy; It would be more appropriate to accept it as a feature of history writing.At the top of Khalīfa b. Khayyāt's principles of historiography, adopting chronological method comes first. Accordingly, Khalīfa b. Khayyāt, gives a brief history about the siyar of the Prophet Muhammad at the introduction of the book. Then, by beginning from the first hijri year, he gives the important events, wars and deaths by the years. Sometimes, he refers to the people assigned by the caliphs of the period by referring to the Amîrs (Administrators) of the Hajj. He gives lists of those who died on both sides of the wars. The importance of mentioning the tribes of the deceased shows his competence in the knowledge of nasab. One of the highlights of his historiography is that he sometimes does not touch upon some of the events and situations that are considered to be turning points in Islamic history; and sometimes he does not go down into detail but just gives relevant narratives. For example, he doesn’t mention any narrations about the selection of the Caliph which perhaps the most fundamental point of separation between Ahl al-Sunnah and Shīʿa in the history of Islam.Although he gave detailed information about The Battle of The Camel (36/656) and Ṣiffīn cases (37/657), it is not possible to determine his views on this subject. In addition, he never mentioned the al-Mihna incident, which deeply influenced society and the scholarly environment during the ʿAbbāsid period. Isnād is also holds an important place in the methodology of history of Khalīfa who was a muḥaddith at the same time. In many of the narrations he used the words haddathanā and ahbaranā.In our study, the siyar section of al-Taʾrīkhwas examined in order to determine the sources of the Khalīfa’s historiography and has been seen that the works of Ibn Isḥāḳ (d. 151/768) and Ibn Hishām (d. 218/833) were the main sources of this chapter. Considering Khalīfa b. Khayyāt’s emphasize to isnād and his reach to Ibn Isḥāḳ 's work through the mediation of Bekr b. Suleiman, it can be said that he was dominant in historiography on the sources before him. Khalīfa b. Khayyāt rarely refers to Qur’anic verses and hadiths when describing events. He referred to the verses in only two places and hadiths in only five places. One of them, and perhaps the most remarkable one in the book is the Ḥadīth of the Prophet Muḥammad: “I am the guardian of whom; ‘Alī is his guardian” This narration is used in the letter of Caliph Mahdī (d. 169/785) of the ʿAbbāsid to khārijī (outer) Abd al-Salām b. Hishām who rebelled. The study is based on the principles outlined above. At the end of the study it is also considered that Khalīfa b. Khayyāt ’s works should be the subject of graduate studies which should be prepared with deep readings. (shrink)

Olfactory rivalry can occur when a binary mixture is sniffed repeatedly, with one percept dominating then the other. Experiment 1 demonstrated olfactory rivalry using several new techniques. Experiments 2 and 3 examined whether participants can notice rivalry. Participants received trials composed of odor pairs: either a mixture followed by the same mixture; or a pure odor followed by the same pure odor. On some trials participants judged whether the two stimuli were the same or different, to see if they could (...) detect rivalry. On other trials participants judged the quality of each odor, allowing us to determine whether rivalry occurred. We found evidence for rivalry when we compared reports of odor quality for one stimulus and then the other, but no evidence that participants could detect this change. These findings are consistent with the idea that people can experience olfactory illusions, but may not know they have occurred. (shrink)

This article explores micro- and macro-level variables that influence the incidence of bribery payouts by firms. A rich data set with information from 55 countries was utilized to achieve this objective. Results of logit regression models indicate that there are a number of micro- and macro-level factors that significantly affect the incidence of bribery payouts. This suggests that it is not only the characteristics of a firm but also the environment of doing business that affect the firm's bribery decision. The (...) results of this study provides information that may help firms develop strategies to reduce corruption in their respective industries and thereby improve their image of corporate social responsibility. The analysis also points to possible policy directions that governments could undertake in order to reduce the incidence of bribery in their country. (shrink)