128 research outputs found
Redefining Khabar Al-Ahad Based on Rashid Rida’s Rational Approach in Al-Manar
No full textThis paper discusses the Rida controversy with hadith scholars. The controversy stems from Rida’s a priori to the traditions that are popular and well-known among hadith scholars, especially the category of khabar al-ahad hadith. The root of their problem lies in Rida’s rational critique of the categories and implications of khabar al-ahad. He considers dilalah (connotation) of khabar al-ahad to be nothing more than just zanni al-dilalah (presumption and uncertainty). The implication is that hadith in this category cannot be used as a basis for belief because belief is based on qat’i al-dilalah (certainty of proposition). The research method used was descriptive-analytic method. This method was combined with a historical-philosophical approach. Therefore, analyzing and describing Rida’s thoughts as a whole is the main work in this article. The next step was to combine the analytical-philosophical approach to the roadmap from the genuine part of Rida’s line of thought. This activity is expected to help the author in finding answers on how Rida rationalizes khabar al-ahad and its implications. Finally, this article finds the conclusions, including: a) Rida’s efforts in rationalizing khabar al-ahad are based on the views of the mutakallimūn (theologians), manat}iqah (logic experts) and falasifah (philosophers), b) Rida has been trapped in his own over a priori thinking on khabar al-ahad, c) Rashid Rida’s rationalization of khabar al-ahad actually leads to ambiguity and uncertainty
Non-finitely generated bigraded local cohomology modules
No full textsummary:Let be a field, and let denote a standard bigraded polynomial ring over . Consider , a finitely generated bigraded -module, and set . Assume that there exists such that . We demonstrate that is not finitely generated. Furthermore, we explore a more general version of this result
An interview with Ali M. Ahad
No full textAli Mumin Ahad is a Somali scholar with multifaceted interests and a personal life story that brought him from Somalia to Italy, and now to Australia. Ali obtained his undergraduate degree in Economics at the Somali National University, and then moved to Italy where he earned his master’s degree in agribusiness at Università Cattolica del Sacro Cuore, in Milan. His doctorate was awarded by La Trobe University in Australia, while he now holds a position as Honorary Research Fellow at Melbourne University, Faculty of Arts. In his works, Ali focuses on Somali history, including colonialism, on literature, and on questions of migration and integration. He is the author of the book “Somali Oral Poetry and the Failed She-Camel Nation State: A Critical Discourse Analysis of the Deelley Poetry Debate (1979-1980)”, published in 2015. Ali is also an eminent voice of Italian post-colonial studies: his “I peccati storici del colonialismo” is a must-read for those interested in understanding the legacy of Italian colonialism in Somalia. Marco Zoppi has conducted this interview for WardheerNews.com, and wishes to thank Ali M. Ahad for his kind availability
Investigation of compression behavior of PE/EVA foam injection molded parts
No full textThe main objective of the presented work is to evaluate the compression behavior of a polymeric foam blend by using a robust framework for the testing sequence of foaming injection molded parts, with the aim of establishing a standard testing cycle for the evaluation of new matrix material. The research purpose is to assess parameters influencing compression behavior and give useful suggestions for the implementation of a finite element analysis. The polymeric blend consisted of a mixture of low density polyethylenes (LDPEs), a high- density polyethylene (HDPE), an ethylenevinyl acetate (EVA) and an azodicarbonamide (ADC). The thermal, rheological and compression properties of the blend are fully described, as well as the injection molding process for two specimen types
Laser welding of polypropylene using two different sources
No full textIn this paper, laser weldability of neutral polypropylene has been investigated using fibre and carbon dioxide lasers. A design of experiment (DoE) was conducted in order to establish the influence of the main working parameters on the welding strength of the two types of laser. The welded samples were characterized by carrying out visual and microscopic inspection for the welding morphology and cross-section, and by distinguishing the tensile strength. The resulting weld quality was investigated by means of optical microscopy at weld cross-sections. The tensile strength of butt-welded materials was measured and compared to that of a corresponding bulk material
Development of a numerical methodology for flowforming process simulation of complex geometry tubes
No full textPublisher Copyright: © 2017 Author(s).Nowadays, the incremental flowforming process is widely explored because of the usage of complex tubular products is increasing due to the light-weighting trend and the use of expensive materials. The enhanced mechanical properties of finished parts combined with the process efficiency in terms of raw material and energy consumption are the key factors for its competitiveness and sustainability, which is consistent with EU industry policy. As a promising technology, additional steps for extending the existing flowforming limits in the production of tubular products are required. The objective of the present research is to further expand the current state of the art regarding limitations on tube thickness and diameter, exploring the feasibility to flowform complex geometries as tubes of elevated thickness of up to 60 mm. In this study, the analysis of the backward flowforming process of 7075 aluminum tubular preform is carried out to define the optimum process parameters, machine requirements and tooling geometry as demonstration case. Numerical simulation studies on flowforming of thin walled tubular components have been considered to increase the knowledge of the technology. The calculation of the rotational movement of the mesh preform, the high ratio thickness/length and the thermomechanical condition increase significantly the computation time of the numerical simulation model. This means that efficient and reliable tools able to predict the forming loads and the quality of flowformed thick tubes are not available. This paper aims to overcome this situation by developing a simulation methodology based on FEM simulation code including new strategies. Material characterization has also been performed through tensile test to able to design the process. Finally, to check the reliability of the model, flowforming tests at industrial environment have been developed.Peer reviewe
On the structure of sequentially Cohen-Macaulay bigraded modules
No full textsummary:Let be a field and be the standard bigraded polynomial ring over . In this paper, we explicitly describe the structure of finitely generated bigraded ``sequentially Cohen-Macaulay'' -modules with respect to . Next, we give a characterization of sequentially Cohen-Macaulay modules with respect to in terms of local cohomology modules. Cohen-Macaulay modules that are sequentially Cohen-Macaulay with respect to are considered
Tameness of local cohomology of monomial ideals with respect to monomial prime ideals
No full textAbstractIn this paper we consider the local cohomology of monomial ideals with respect to monomial prime ideals and show that all these local cohomology modules are tame
Relative Cohen–Macaulayness of bigraded modules
No full textAbstractIn this paper we study the local cohomology of finitely generated bigraded modules over a standard bigraded polynomial ring which have only one nonvanishing local cohomology with respect to one of the irrelevant bigraded ideals
Maximal depth property of finitely generated modules
No full text Let [Formula: see text] be a Noetherian local ring and [Formula: see text] a finitely generated [Formula: see text]-module. We say [Formula: see text] has maximal depth if there is an associated prime [Formula: see text] of [Formula: see text] such that depth [Formula: see text]. In this paper, we study finitely generated modules with maximal depth. It is shown that the maximal depth property is preserved under some important module operations. Generalized Cohen–Macaulay modules with maximal depth are classified. Finally, the attached primes of [Formula: see text] are considered for [Formula: see text]. </jats:p
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