Ibn al-Qāṣṣ (d. 335/946), one of the representatives of the Shāfiʿī school of law in the 4th/10th century, compiled a short treatise of extraordinary nature: Fawāʾid Ḥadīth Abī ʿUmeyr. In this work, he deduces sixty different wajhs (verdicts, comments) from a ḥadīth reporting the Prophet’s interest and affection to a child known as Abū ʿUmayr and his family during a visit he paid after Abū ʿUmayr’s birdie died by jokingly telling him in rhyme, “yā Abā ʿUmayr, mā faʿala al-nughayr” (O (...) Abū ʿUmayr, what happened to the nughayr?) This study deals with the primary goal of the composition of the Fawāʾid, its content, and structural qualities as well as the author’s approach in deducing verdicts. As one of the aṣḥāb al-wujūh, the author’s legal/madhhab notion and the literalist and external perspective he developed regarding the interpretation of texts, seems to have directly affected his deductive reasoning and determined his approach. This concise work not only sheds light over certain aspects of the relationship between ḥadīth and fiqh at the time of Ibn al-Qāṣṣ, but also exemplifies to what extent methodological tendencies and personal factors might affect the process of deriving verdicts from ḥadīth and could push the limits in that regard. Summary: Ibn al-Qāṣṣ (d. 335/946), one of the representatives of the Shāfiʿī school of law in the 4th/10th century, compiled a short treatise of extraordinary nature: Fawāʾid Ḥadīth Abī ʿUmeyr. In this work, he deduces sixty different wajhs (verdicts, comments) from a ḥadīth reporting the Prophet’s interest and affection to a child known as Abū ʿUmayr and his family during a visit he paid after Abū ʿUmayr’s birdie died by jokingly telling him in rhyme, “yā Abā ʿUmayr, mā faʿala al-nughayr” (O Abū ʿUmayr, what happened to the nughayr?) The report of Abū ʿUmayr, which is in the focus of the work, is, in essence, reflects a singular and special aspect of the close relationship between the Prophet and Anas b. Malik’s family. Nevertheless, it is surprising that many ḥadīth scholars from the early times, not only Ibn al-Qāṣṣ, have chosen this ḥadīth as an example in which they can demonstrate their skill in the field of fiqh al- ḥadīth. Fawāʾid seems to be a work in which the juridical point of view centered and resembles the classical fiqh commentaries in a sense. In the work, different variants of the Abū ʿUmayr report were brought together and evaluated within the framework of the text and textual possibilities as possible. The author also analyzed some words in the narrative text for being a base for a verdict, referred to Qurʾānic verses, prophetic ḥadīths, reports, and legal opinions, tried to solve the disputes and the conflicts among legal evidences in various ways, and stated occasionally his personal opinions. Fawāʾid reflects the author’s rich accumulation of legal knowledge, while at the same time gives an idea about his knowledge of ḥadīth and his approach to the ḥadīth. Considering what the author did and wanted to do, it is understood that he deals with ḥadīth as well as fiqh, and he has a certain level of relationship not only with fuqahāʾ (muslim jurisprudents), but also with ḥadīth scholars. Ibn al-Qāṣṣ’s interest in fiqh and ḥadīth must have lead him to take initiative to eliminate the tension between the ahl al-ḥadīth of Shāfiʿī school of law who focused on transmitting ḥadīths and the fuqahāʾ of Shāfiʿī school of law who care about the fiqh perspective, in that period of time. It can also be said that he tried to establish a reconciliation between the ahl al-ḥadīth (the traditionists) and the ahl al-raʾy (the rationalists) and bring the parties together in the middle way. The work seems to have been written as a result of such considerations. As Ibn al-Qāṣṣ was considered as one of the aṣḥāb al-wujūh, that is, as a jurist who was bound of a madhhab Imām for legal reasoning, he seems to have followed the methodology of Shāfiʿī school of law for deriving legal solutions from the sources. Legal notion of the author and his literalist and textualist perspective with regards to the interpretation of texts, seems to have directly affected his way of reasoning from the ḥadīth and determined his approach. This approach, as mentioned in many contemporary studies, is not sufficient and appropriate for the evaluation of ḥadīth texts, which were transmitted by meaning, not word-by-word, and shaped by the transmitter’s dispositions. It is also difficult to say that Ibn al-Qāṣṣ sufficiently considered the physical, historical, social, and cultural context surrounding the text as well as other extra-textual elements, which complete the meaning. This situation implies that some of the wajhs recorded in the work are the author’s attempt to find a base and evidence for his ideas, which he already had, rather than deductions drawn from the ḥadīth. It makes the scientific quality and accuracy of his efforts controversial. The verdicts presented in the work, as wajh and fāʾida are predominantly jurisprudential and compatible with the opinions of the Shāfiʿī School of law, however, there are also controversial ones, and the author pointed to them without revealing his own tendency. It does not seem that these wajhs in the work are systematically ranked. In this vein, similar wajhs are sometimes in succession, sometimes scattered, and some wajhs are repetitive. The degree of accuracy, clarity and quality of some wajhs also seem arguable. Zayn al-Dīn al-ʿIrāqī (d. 806/1404), who made a general evaluation of these wajhs, said that: “Some of the (meanings of the) wajhs in the work are apparent, some of them are hidden and some are strained.” The work’s editor drew attention in the footnotes to the wajhs, which might be subject to objection. The early ḥadīth scholars, who reported this ḥadīth in their compilations, deduced six or seven judgments from the ḥadīth under the headings (bāb) specified for this ḥadīth. This appears quite modest in comparison to the treatise of Ibn al-Qāṣṣ. The given ḥadīth has also taken its place in the fiqh literature, and it has been questioned in the context of the issue of Madīna’s being of ḥarām region (holy land) and hunting ban in this region. In conclusion, Ibn al-Qāṣṣ’s treatise of Fawāʾid Ḥadīth Abī ʿUmayr, is a short but worthy example of the ḥadīth literature in terms of its purpose and interesting content. This work can be considered as a study that exemplifies how the purpose of writing can be determinative on the structure of a work, and in particular to what extent methodological tendencies and personal factors might affect the process of deriving verdicts from ḥadīth and could push the limits in that regard. The author’s universe of meaning, which focused on the apparent meaning and to draw as many judgments as possible from the text, should be related to his personal intention and purpose as well as to the fiqh perspective of his time. Due to the textual approach and the method for drawing inferences, which are observed in the work, the tool-purpose relationship between the text and the judgment sometimes remains obscure and sometimes becomes unimportant. In some respects, this work is a striking example of the consequences of ignoring the context and historical reality surrounding texts for specific purposes. (shrink)

While Darwin pictured organismal evolution as “descent with modification” more than 150 years ago, a detailed reconstruction of the basic evolutionary transitions at the molecular level is only emerging now. In particular, the evolution of today's protein structures and their concurrent functions has remained largely mysterious, as the destruction of these structures by mutation seems far easier than their construction. While the accumulation of genomic and structural data has indicated that proteins are related via common ancestors, naturally occurring protein structures (...) are often considered to be evolutionarily robust, thus leaving open the question of how protein structures can be remodelled while selective pressure forces them to function. New information on the proteome, however, increasingly explains the nature of local and global conformational diversity in protein evolution, which allows the acquisition of novel functions via molecular transition forms containing ancestral and novel structures in dynamic equilibrium. Such structural plasticity may permit the evolution of new protein folds and help account for both the origins of new biological functions and the nature of molecular defects. BioEssays 29:1095–1104, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

This article, in the example of the subject of shukr (gratitude), proposes a ‘perspective’ for the instructor who determines the processes of bringing a subject into the learning environment. This perspective is related to the encounter with the knowledge of the subject to be taught. It points to the approach of the instructor to the information he/she will refer to about the subject he/she will teach while preparing in the mental plan. The content of the subject, the objectives, the methods, (...) techniques, and resources to be used to present the subject, and how the output will be measured and evaluated are largely determined by this perspective. In a way, the proposed perspective involves monitoring the change and transformation of life and the contextualization of religious knowledge by paying attention to the methodological functioning. Thus, the way the subject of gratitude presented in the Qur’an and hadith narrations aims to provide the teacher with a ‘perspective’ on what kind of content to prepare. This is a suggestion for the instructor to reveal that while managing the process of religiously understanding/interpreting life as it flows by, the instructor should not ignore the ways in which knowledge appears in the Qur’an and hadith narrations. For example, the first meaning of the word shukr (gratitude) in the Qur’an is “faith in Allah.” However, traditionally, shukr (gratitude) is not taught within the subject area of faith. In this context, the article follows the suggestion that referring to the method and source of the knowledge to be taught can provide the instructor with a holistic and in-depth ‘perspective.’. (shrink)

Hopfield neural network is considered as an artificial model derived from the brain structures and it is an important model that admits an adequate performance in neurocomputing. In this article, we solve a dynamical model of 3D HNNs via Atangana–Baleanu fractional derivatives. To find the numerical solution of the considered dynamical model, the well-known Predictor-Corrector method is used. A number of cases are taken by using two different sets of values of the activation gradient of the neurons as well as (...) six different initial conditions. The given results have been perfectly established using the different fractional-order values on the given derivative operator. The objective of this research is to investigate the dynamics of the proposed HNN model at various values of fractional orders. Nonlocal characteristic of the AB derivative contains the memory in the system which is the main motivation behind the proposal of this research. (shrink)

In Husserl’s philosophy of time, the relationship between primary impressions, retention, protention and remembrance is very important. In this article, we will first try to show what primary impressions, retention, and protention are. Then we will focus on the distinction between retention and reminiscence.

Cảm xúc là yếu tố cơ bản thúc đẩy con người đưa ra quyết định và xử lý thông tin. Sợ hãi là một trong những cảm xúc phổ biến nhất ảnh hưởng đến hành vi của nhà đầu tư cá nhân trên thị trường chứng khoán. Mặc dù nhiều nghiên cứu đã được thực hiện để khám phá tác động của nỗi sợ hãi đối với hiệu quả đầu tư và hành vi giao dịch của nhà đầu tư cá (...) nhân, nhưng vẫn còn rất ít thông tin về các yếu tố ảnh hưởng đến nỗi sợ hãi của nhà đầu tư cá nhân trong thời kỳ thị trường sụt giảm (hoặc những giai đoạn cực kỳ biến động). Vì thế, nghiên cứu này được thực hiện để tìm hiểu liệu các nguồn thông tin ảnh hưởng đến quyết định đầu tư của nhà đầu tư có ảnh hưởng đến sự sợ hãi của họ khi khủng hoảng xảy ra hay không. Nghiên cứu đã sử dụng phương pháp phân tích Bayesian Mindsponge Framework (BMF) trên bộ dữ liệu từ 1526 nhà đầu tư Trung Quốc và Việt Nam. Kết quả nghiên cứu chỉ ra rằng các nhà đầu tư tiếp cận các loại thông tin khác nhau khi đưa ra quyết định đầu tư sẽ ảnh hưởng đến tần suất phản ứng sợ hãi khác nhau. Cụ thể, các nhà đầu tư tham khảo thông tin từ chuyên gia hoặc tự phân tích khi đưa ra quyết định đầu tư ít bị đóng băng (biểu hiện của tâm lý sợ hãi) hơn trong thời kỳ thị trường sụt giảm. Ngược lại, những người đưa ra quyết định đầu tư dựa trên thông tin từ người quen hay bạn bè và trực giác sẽ bị đóng băng thường xuyên hơn. Kết quả nghiên cứu này giúp gợi ý nhà đầu tư cá nhân nên trang bị cho mình các kiến thức về tài chính cũng như tham khảo các ý kiến chuyên gia trên thị trường, hoặc những nguồn thông tin đáng tin cậy, khi đưa ra quyết định đầu tư. Bên cạnh đó, cơ quan quản lý thị trường cần có hoạt động phổ cập kiến thức về thị trường chứng khoán, hạn chế ảnh hưởng của các kênh thông tin không chính thống, và khuyến khích nhà đầu tư ít kinh nghiệm mua chứng chỉ quỹ của các quỹ đầu tư. (shrink)

Central limit theorem for the functional of jump Markov process. Nguyễn Văn Hữu, Vương Quân Hoàng và Trần Minh Ngọc. Báo cáo: Hội nghị toàn quốc lần thứ III “Xác suất - Thống kê: Nghiên cứu, ứng dụng và giảng dạy” (tr. 34). Ba Vì, Hà Tây, ngày 12-14 tháng 05 năm 2005. Viện Toán học / Trường Đại học Khoa học tự nhiên / Đại học Quốc gia Hà Nội.