88 research outputs found
Author Correction: Hydrogel mechanical properties in altered gravity (npj Microgravity, (2024), 10, 1, (83), 10.1038/s41526-024-00388-2)
No full textIn this article the affiliation, “Department of Aerospace Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, UAE” for the author “Yarjan Abdul Samad” was inadvertently omitted. The original article has been corrected
Performance Evaluation of LTE Physical Layer Using SC-FDMA & OFDMA
No full textSince past few decades different types of cellular networks were launched and went successful on the radio links such as WiMAX, that became very popular because of its high data rate (70Mbps) and support for providing wireless internet services over 50km distance. The UMTS Long Term Evolution (LTE) is an emerging technology in the evolution of 3G cellular services. LTE runs on an evolution of the existing UMTS infrastructure already used by over 80 percent of mobile subscribers globally. We have very limited resources in cellular technologies and it is important to utilize them with high efficiency. Single Carrier Frequency Division Multiple Access (SC-FDMA) & Orthogonal Division Multiple Access (OFDMA) are major part of LTE. OFDMA was well utilized for achieving high spectral efficiency in communication system. SC-FDMA is introduced recently and it became handy candidate for uplink multiple access scheme in LTE system that is a project of Third Generation Partnership Project (3GPP). The Multiple Access Scheme in Advanced Mobile radio system has to meet the challenging requirements for example high throughput, good robustness, efficient Bit Error Rate (BER), high spectral efficiency, low delays, low computational complexity, low Peak to Average Power Ratio (PAPR), low error probability etc. Error probability is playing vital role in channel estimation and there are many ways to do channel estimation, like Wiener Channel Estimation, Bayesian Demodulation etc. In our thesis, we investigate the performance of SC-FDMA and OFDMA of LTE physical layer by considering different modulation schemes (BPSK, QPSK, 16QAM and 64QAM) on the basis of PAPR, BER, power spectral density (PSD) and error probability by simulating the model of SC-FDMA & OFDMA. We use Additive White Gaussian Noise (AWGN) channel and introduce frequency selective (multipath) fading in the channel by using Rayleigh Fading model to evaluate the performance in presence of noise and fading. A set of conclusions is derived from our results describing the effect of higher order modulation schemes on BER and error probability for both OFDMA and SC-FDMA. The power spectral densities of both the multiple access techniques (OFDMA and SC-FDMA) are calculated and result shows that the OFDMA has high power spectral density. The considered modulation schemes also have a significant impact on the PAPR of both OFDMA and SC-FDMA such that the higher order modulations increase PAPR in SC-FDMA and decrease PAPR in OFDMA. However, the overall value of PAPR is minimum in SC-FDMA for all modulation schemes. The PSD calculation results also support the remarks given on PAPR.Author 01: Abdul Samad Shaikh, Phone # 0046-760915236 Author 02 : Khatri Chandan Kumar, Phone # 0046-76264974
sj-docx-1-smo-10.1177_20503121231206932 – Supplemental material for Unfolding the reality of the smoking paradox in a South Asian cohort of patients presenting with ST-elevation acute coronary syndrome undergoing primary percutaneous coronary intervention
No full textSupplemental material, sj-docx-1-smo-10.1177_20503121231206932 for Unfolding the reality of the smoking paradox in a South Asian cohort of patients presenting with ST-elevation acute coronary syndrome undergoing primary percutaneous coronary intervention by Rajesh Kumar, Abdul Hakeem Shaikh, Rameez Ahmed, Maria Noor Siddiqui, Kubbra Rahooja, Kalsoom Chachar, Muhammad Qasim Khan, Maryam Samad, Abiha Urooj, Ali Bin Naseer, Jawaid Akbar Sial, Tahir Saghir, Sohail Khan and Nadeem Qamar in SAGE Open Medicine</p
The line-of-balance programme on repetitive works: case study / Shaharuddin Abdul Samad
No full textAs if repetitive works might be construction of a housing project in manufacturing of computer components' products and such that has identical unit, one powerful technique had being developed. This technique is known as line-of-balance method and can applied in various fields with repetitive works such been mentioned above. To fulfil the requirement for the degree of Bachelor in Engineering with Hons (Civil), thus the author will only emphasise on the construction industries. Undoubted, in construction industries , there are many repetitive works involve such as residential housing project construction of prestressed beam, delivery of materials from plant to the site, construction of high rise building et cetera. Living in technology of information era now, everything is just on our fingers' tip, thanks to the computer and its software that available anywhere. In making the repetitive works done with more efficiently, effectively and reduce time cost, a computer programme has been developed based on the Line-of-Balance Method. The programme is developed interactively, as the user will feel conveniently to use it The user is then being asked to open two files to restore all the data. Eventually, the output will then can be used for analysing, controlling and lastly can make comparison between the developed programme and progress of the project on the site
THE ISSUE OF TAFARRUD AND NAKARAH BETWEEN TRADITIONISTS AND HISTORIANS (ANALYTICAL STUDY)
No full textIf someone from narrators (رُوَاة) transmits a narrative which is not transmitted but only by him, it is called tafarrud(تفرد). Here is a huge argument on the issue of acceptance of this kind of narrarive between early traditionists (المحدثين المتقدمين) and Muslim historians. The early traditionists consider it unacceptable at all unless the narrator is one of most reliable and authentic one; otherwise they have no option to accept it. In contrary, the historians accept this kind of all narratives until there is a narrative which is not supported by internal and external evidences.The early traditionists see it apparently impossible for the narrator to be unique and unparalleled with a narrative, and usually it is uncommon, that is why if there is a number of tafarrud, they call for him (يروي مناكير) or (له أو عنده مناكير). But when the number of tafarrud increases they call for him (منكر الحديث). This is all about early traditionists, but the late comers consider it additions (زيادة الثقة) and accept it if the narrator is authentic and there is no contradiction between his narrative and other valid narratives.The historians look at these additions beneficial and helpful to understand and analyze the historical events, their reasons to occur and finally their aftereffects and consequences. They value these additions unless there is something which is refused by internal textual criticism or external historic circumstantial evidences.In this paper, I have tried to highlight this aspect and both points of view to reach to a conclusion
Autoriti hadith dalam kitab Tasawuf tulisan Jawi: satu kajian terhadap kitab hidayah Al-Salikin'
No full textThe study aims to analyze the quality of Hadith in the books of neo-sufism, especially the Malay version. Syeikh 'Abdul Samad al-Falimbani's Hidayah al-Salikin which is deeply influenced by the tasawwuf of al-Ghazali is analyzed thoroughly in terms of its history including of the author himself, approach, content as well as its language. From the analysis,the quality of the Hadiths in the book are established
Fieldwork measurement of indoor environmental quality (IEQ) in Malaysian platinum-rated green office buildings
No full textImpact of Lean Thinking and Practices on Architectural/System Architectures Level Innovation in Swedish Manufacturing Industry
No full textThis thesis analyzes and argues how implementing lean principles and tools affect an organization’s architectural innovation. Introducing new product architectures and modifying existing architectures is often difficult for companies. Architectural innovation requires extensive company resources for experimentations and new learning. Applying lean principles and tools in an innovative organization often make difficulties since innovation focus on active exploration for new solutions within a constantly changing environment (high risks). Whereas, lean focus on eliminating all kind of waste in the system (low risks). Little is known about how lean principles and tools might affect architectural innovation in organizations. Therefore, this research explores the relationship between lean and architectural innovation in manufacturing industries. The data sample use for this study is Swedish manufacturing companies in seventeen different industry types. The types of industries consist on system level product type such as electrical or/and mechanical integrated products. Results suggest that in lean principles and tools, standardization, value stream and human resource management (HRM) have significantly positive effect on organization’s architectural innovation capability. Whereas, lean design for manufacturability (DFM) has no significant effect on an organization’s architectural innovation capability. This study’s findings suggest companies that have not implemented lean thinking and practices yet can adopt lean concepts not only for efficiently utilizing the resources but for improving the architectural innovation also. Furthermore, lean companies should increase their focus on customer involvement in product development as well as in cross-functional training of employees and on job training programs to improve the architectural innovation. Findings suggest that those companies that have strategic focus on architectural innovation can adopt lean concepts and procedures from manufacturing and production departments in order to dramatically increase the architectural innovation
Measuring Stock Market Predictability With Implications of Financial Ratios: An Empirical Investigation of Pakistan Stock Market
No full textMeans of escape provisions and evacuation simulation of public building in Malaysia and Singapore
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