2,344,790 research outputs found
Sustainable Manufacturing through Digital Multi-Material 3D Printing
No full textThe utilisation of three-dimensional (3D) printing has become a well-established method for fabricating structural components across various materials such as polymers, metals and ceramics. Within this domain, multi-material 3D printing emerges as a pivotal advancement, offering prospects for rapid manufacturing, customised design, and structural innovation. Particularly, the incorporation of recycled materials into multi-material printing holds promise for promoting sustainability and recyclability in manufacturing processes. By leveraging multi-material printing techniques and incorporating recycled materials, this study aims to advance the sustainability agenda within manufacturing practices while concurrently exploring avenues to enhance material performance for practical engineering applications. This study focuses on the multi-material printing of pure polylactic acid (PLA) alongside recycled polylactic acid (rPLA), employing fused deposition modelling (FDM) as a cost-effective 3D printing technique. The research aims to identify the optimal composition for achieving desired material properties by exploring different percentages and layer placements of recycled material in combination with pure PLA. Detailed analysis of the mechanical properties of these 3D printed components was conducted, with the experimental results further validated through analysis of variance. The results of this study emphasis the mechanical advantages associated with the utilisation of multi-material 3D printing techniques. Moreover, the incorporation of both PLA and rPLA materials highlights the potential sustainability benefits inherent in these approaches
Stirellus kumratensis Naveed & Zhang
No full textStirellus kumratensis Naveed & Zhang (Fig. 1) Stirellus kumratensis Naveed & Zhang, 2020: 481. Measurement. Male: 3.57–3.60mm. Material examined. 1♂, Pakistan, Khyber Pakhtunkhwa, Kumrat Valley, 2359m, July 2016, coll. Hassan Nav- eed (holotype). Pakistan, Khyber Pakhtunkhwa, Naran City, 2409m, July 2016, coll. Hassan Naveed. 3♂♂, Paki- stan, Khyber Pakhtunkhwa, Kumrat Valley, 2359m, August 2018, coll. Hassan Naveed (paratype). Remarks. This species resembles Stirellus laetus (Melichar) but can readily be differentiated in having the crown with pair of longitudinal orange stripes along the mesal margins of eyes, male pygofer with macrosetae, style apophysis small and aedeagus with a spine-like apex.Published as part of Shah, Bismillah, Naveed, Hassan & Duan, Yani, 2020, Taxonomic review of the leafhopper genus Stirellus Osborn & Ball (Hemiptera Cicadellidae: Deltocephalinae: Stenometopiini) from Pakistan with description of a new species, pp. 189-202 in Zootaxa 4763 (2) on page 191, DOI: 10.11646/zootaxa.4763.2.3, http://zenodo.org/record/375820
Stirellus neoconvexus Naveed & Zhang
No full textStirellus neoconvexus Naveed & Zhang (Fig. 3) Stirellus neoconvexus Naveed & Zhang, 2020: 481. Measurement. Male: 3.50–3.70mm. Material examined. 1♂, Pakistan, Punjab, Murree Hills, 2291m, 2016, coll. Hassan Naveed (holotype). 1♂, Pakistan, Azad Jammu and Kashmir, Rawalakot City, 1638m, July 2017, coll. Hassan Naveed (paratype). 2♂♂, Pakistan, Khyber Pakhtunkhwa, Kumrat Valley, 2359m, August 2018, coll. Hassan Naveed (paratype). Remarks. This species resembles Stirellus convexus Thomson but differs in having the male pygofer side with macrosetae dorsally, in the style shape and in having the aedeagal shaft with a slight dorsal expansion. This species is also close to Stirellus multipunctatus Duan, Webb & Zhang but can be easily distinguished by the orange-red or brownish red stripes on the head interrupted medially, and by the pygofer and aedeagus shape.Published as part of Shah, Bismillah, Naveed, Hassan & Duan, Yani, 2020, Taxonomic review of the leafhopper genus Stirellus Osborn & Ball (Hemiptera Cicadellidae: Deltocephalinae: Stenometopiini) from Pakistan with description of a new species, pp. 189-202 in Zootaxa 4763 (2) on page 191, DOI: 10.11646/zootaxa.4763.2.3, http://zenodo.org/record/375820
Pioneers of Library Movement in Pakistan
No full textThe paper aims to describe in brief the contribution of seven leaders of Pakistan librarianship, viz. K.B. Khalifa M. Asadullah, Prof. Dr. Abdul Moid, Dr. Abdus Subuh Qasimi, Muhammad Shafi, Fazal Elahi, Khawaja Nur Elahi and S. V. Hussain. The early library developments are given for better understanding of the role of these leaders
Soractellus lalianensis Naveed & Zhang 2018, sp. nov.
No full textSoractellus lalianensis sp. nov. (Figs. 1A–I, 2A–C) Measurement. Length. Male: 1.5–1.9mm; female: 1.9–2.5mm. Colouration and Morphology. Colour yellowish brown to ochraceous (Fig. 1A). Vertex and pronotum with brownish hue. Scutellum with lateral margins yellowish white reaching slightly beyond scutellar suture. Head slightly wider and longer than pronotum. Vertex slightly shorter than breadth between eyes (Fig. 1A). Forewing brachypterous, about1.7x as long as broad (Fig. 1A, C, E). Legs dark brown (Fig. 1C). Genitalia. Pygofer considerably longer than wide, with numerous stout setae (Fig. 2A). Valve triangular (Fig. 2B). Connective loop-shaped, without stem (Fig. 2B). Style elongate, with preapical lobe moderately developed, apophysis long and thumb-like (Fig. 2B). Aedeagal shaft elongate, forked at apex, with branches more than one third length of aedeagus, gradually attenuating in lateral view, gonopore at base (Fig. 2B, C). Female seventh sternum tumid medially on posterior margin (Fig. 1D). Type material: Holotype: ♂, PAKISTAN, Lalian City, 21 May 2016, Coll. Hassan Naveed. Paratypes: 7♂, 5♀ same data as holotype; 12♂, 9♀, Mianwali City, 18 July 2017, Coll. Hassan Naveed. Remarks. This species is similar to Soractellus jianfengensis but can be distinguished from the latter by the following characteristics: forewings brachypterous, aedeagal shaft with apical branches nearly 1/4 of total length, style apophysis straight and stout, and female seventh sternum tumid medially on posterior margin. Etymology. The species epithet is derived from the type locality: Lalian, Pakistan.Published as part of Naveed, Hassan & Zhang, Yalin, 2018, Revision of the leafhopper genus Soractellus Evans (Cicadellidae: Deltocephalinae) with description of a new species from Pakistan, pp. 595-599 in Zootaxa 4429 (3) on page 596, DOI: 10.11646/zootaxa.4429.3.12, http://zenodo.org/record/128501
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Personal narrative of Muhammad Awaiz
No full textRecording of a personal narrative by Muhammad Awaiz (a 31-year old male) in which the speaker talks about the economic hardships he endured as a student up until high school. He then moved to a far off big city in search of a job. There, he acquired a government job which helped him improve his financial situation. In this light, he reiterates his resolve to provide his children better education and better opportunities
Secure and practical computation on encrypted data
No full textThis Dissertation was approved for publication on 2016-04-21 at 13:02.Because of the importance of computing on data with privacy protections, the cryptographic community has developed both theoretical and practical solutions to compute on encrypted data. On the one hand, theoretical schemes, such as fully homomorphic encryption and functional encryption, are secure but extremely inefficient. On the other hand, practical schemes, such as property-preserving encryption, gain efficiency by accepting significant reductions in security. In this thesis, we first study the security of popular property-preserving encryption schemes that are being used by companies such as Microsoft and Google. We show that such schemes are unacceptably insecure for key target applications such as electronic medical records. Second, we propose new models to compute on encrypted data and develop efficient constructions and systems. We propose a new cryptographic primitive called Blind Storage and show how it can be used to realize symmetric searchable encryption, which is much more secure than property-preserving encryption. Finally, we propose a new cryptographic model called Controlled Functional Encryption and develop two efficient schemes in this model.Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-07-07 without embargo termsThe student, Muhammad Naveed, accepted the attached license on 2016-04-21 at 10:11.The student, Muhammad Naveed, submitted this Dissertation for approval on 2016-04-21 at 10:19.DSpace SAF Submission Ingestion Package generated from Vireo submission #9400 on 2016-07-07 at 13:32:11Made available in DSpace on 2016-07-07T19:54:32Z (GMT). No. of bitstreams: 3
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Personal narrative of Muhammad Awaiz
No full textRecording of a personal narrative by Muhammad Awaiz (a 31-year old male) in which the speaker talks about the economic hardships he endured as a student up until high school. He then moved to a far off big city in search of a job. There, he acquired a government job which helped him improve his financial situation. In this light, he reiterates his resolve to provide his children better education and better opportunities
Gurawa longispina Naveed & Zhang 2018, sp. nov.
No full textGurawa longispina sp. nov. Figs. 1A–D, 3A–F, 5A Length. Male: 3.1–3.3mm; female: 3.6mm. Pale ochraceous in general coloration. Vertex with indistinct median brown stripe with converging brown arms near anterior margin, lateral margin with fuscous spots. Pronotum with 3–4 dark brown lateral spots on each side (Fig. 1A). Scutellum pale with median ridge pale ochraceous, lateral ends with or without dark brown longitudinal stripe. Face with or without dark brown mottling, antenna with brown elongated spot at base (Fig. 1C). Vertex 1.5x wider than median length, medially 1.5x longer than median length of pronotum. Crown constricted laterally and divided into anterior and posterior small lobes near ocelli, pronotum 2.6x wider than long; hind femoral macrosetae 2+0. Forewing nearly 3x longer than wide. Male genitalia. Pygofer with posterior margin broadly rounded, lobe-like, ventral margin concave (Fig. 3A). Valve triangular, nearly 2.4x as broad as median length (Fig. 3B). Subgenital plates with inner margin as long as broad at base (Fig. 3B). Style with preapical lobe long, apophysis nearly 2x longer than preapical lobe with obvious tooth on ventral margin near basal half (Figs. 3B, 5A). Connective with stem as long as arms (Fig. 3F). Aedeagal shaft slightly narrowed towards apex with parallel margins, serrations absent, lateroapical spines long, slender, curved anteromesad (Figs. 3C–F), gonopore subapical on dorsal surface. Female. Seventh sternum nearly 1.3x as wide at base as long, posterior half slightly narrowed towards distal margin, posterior margin with pair of large, irregularly rounded lateral lobes separated by narrow concavity with short median angulate projection (Fig. 1D). Type material: Holotype: ♂, Pakistan, Abbottabad City, 1256m, 4 August 2016, Coll. Hassan Naveed. Paratypes: 1♀, same data as holotype; Azad Jammu & Kashmir: Rawalakot, 2♂, 1638m, 11 August 2017, Coll. Hassan Naveed; Azad Jammu & Kashmir: Toli Pir, 1♂, 1♀, 2682m, 12 August 2017, Coll. Hassan Naveed. Remarks. This new species is similar to G. constricta in external appearance but has a much shallower constriction of the lateral margins of the crown. This species belongs to the group with the crown constricted, that includes G. ceylonica and G. constricta. These species have very similar structure of the aedeagus, with a pair of long apical spines and a short lobe between them. The new species has unusually long apical processes of the aedeagus compared to the remaining species. Etymology. The epithet longispina refers to the apical spine-like processes of the aedeagus.Published as part of Naveed, Hassan & Zhang, Yalin, 2018, Revision of the leafhopper genus Gurawa (Cicadellidae: Deltocephalinae: Chiasmini) from Pakistan with description of a new species, pp. 481-488 in Zootaxa 4450 (4) on pages 486-487, DOI: 10.11646/zootaxa.4450.4.6, http://zenodo.org/record/144497
A critical analysis of Christian responses to Islamic claims about the work of the Prophet Muhammad, ‘the Messenger of God’.
No full textThe aims of this study are to analyse critically the different Christian responses to the Islamic understanding of the work of Muhammad. Chapter one consists a short introduction leading to an appraisal of Muhammad which incorporates historical, hagiographal and Quranic source material, and in the light of relevant Christian and Muslim scholarship. The second chapter presents a summary critical analysis of Muhammad in Christian theological perspective, from 661 A.D. to modern times. Chapter three presents a critique of Christian responses to the Muslim allegations that the text of the Bible has been infected with corruption; and that Muhammad's advent and status are foretold in the unadulterated' scriptures, and in the Gospel of Barnabas. Chapter four examines the theological significance of the work of Muhammad for Christians. Thus, Jesus and Muhammad are critically assessed and contrasted in order to ascertain the importance, for Christians, of the Muslim claims in respect of Muhammad as ’the messenger of God’. Chapter five provides a critical evaluation of the various Christian responses to Muhammad. It is argued that many of the said responses have been entangled in myths and misperceptions which have severely distorted the true account of Muhammad's work. Consequently, many Christians have failed to appreciate the divine legitimacy of Muhammad's call to prophethood. Further, it is argued that Christians should accept that Muhammad is a genuine prophet, and the messenger of God. However, Muhammad's use of the power-structure in order to maintain Islam is in sharp contrast to Jesus’ decision to face the consequences of his ministry passively through faith in God. Accordingly, orthodox Christian belief in the passion, death and resurrection of Jesus provides another dimension to prophethood, where the messenger and the message become one, an identification which finds no parallel in Islam, and which, in the nature of the case, cannot find a parallel
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