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Search Results: 1 - 10 of 9848 matches for " Irfan Ahmed "
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Fairness Aware Group Proportional Frequency Domain Resource Allocation in L-SC-FDMA Based Uplink  [PDF]
Irfan Ahmed, Amr Mohamed
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2011, DOI: 10.4236/ijcns.2011.48060
Abstract: This paper presents virtual clusters based proportional fairness and resource allocation scheme for Localized Single Carrier Frequency Division Multiple Access (L-SC-FDMA). L-SC-FDMA has been selected as the uplink transmission scheme in 3GPP Long Term Evolution (LTE) due to its low Peak to Average Power Ratio (PAPR) over OFDMA in general and high rate-sum capacity over Interleaved SC-FDMA in particular. Virtual cluster-based proportional fairness (VCPF) scheduler exploits the link adaptation information available at MAC layer to form virtual clusters. The distributed proportional fairness scheduler ensures a minimum throughput for all users in the coverage area by assigning contiguous RBs, proportional to the throughput and the number of users in a particular cluster or group. Simulations have been performed using practical scenario of uniformly distributed users in Rayleigh faded coverage area and design formulas have been devised for network planning to get the best possible fairness with promising level of quality of service (QoS).
Academic Diversity and Assessment Process for CS Program Accreditation  [PDF]
Arif Bhatti, Irfan Ahmed
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.68080
Abstract: Underdeveloped countries have realized that the investment and the improvement in higher education are very important for the progress. This is evident in the number of new universities and institutes of higher learning are established in the last 20 - 30 years. In these universities, administrative processes are well established but academic processes are not. Accreditation bodies such as ABET do not dictate any specific assessment process but want each candidate program to have an assessment process that is reliable and can find out weak points in the program to continuously improve. This paper describes a successful assessment process adopted at College of Computers and Information Technology, Taif University.
The Integrated Model Using Agile Practices to CBR  [PDF]
Fizza Khalid, Irfan Ahmed
Journal of Software Engineering and Applications (JSEA) , 2017, DOI: 10.4236/jsea.2017.105024
Abstract: Agile development methodology works as a bridge, creating a composite control that changes the way of software development tasks. In this study, we have introduced a framework, integrated with artificial intelligence (AI) techniques, agile software development and its practice. The skilled developer is useful for implementing the method according to the reaction of the evaluation framework. The idea of agile and CBR procedure used to improve the current model. This model provides a comprehensive guide to the use of Agile development practices to be integrated with CBR for software development. Agile development methods used by CBR and RBR provide a more efficient and accurate working scenario. Case based reasoning is just the domain limited number of cases, while rules based reasoning is the technique of the generic and specific rules of the issue. Experts give feedback about the framework and they are satisfied with the functioning of the framework. The framework and its results were evaluated by the domain experts and case studies.
Knowledge Driven Paper Recommendation Using Heterogeneous Network Embedding Method  [PDF]
Irfan Ahmed, Zubair Ahmed Kalhoro
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.612016
Abstract: We search a variety of things over the Internet in our daily lives, and numerous search engines are available to get us more relevant results. With the rapid technological advancement, the internet has become a major source of obtaining information. Further, the advent of the Web2.0 era has led to an increased interaction between the user and the website. It has become challenging to provide information to users as per their interests. Because of copyright restrictions, most of existing research studies are confronting the lack of availability of the content of candidates recommending articles. The content of such articles is not always available freely and hence leads to inadequate recommendation results. Moreover, various research studies base recommendation on user profiles. Therefore, their recommendation needs a significant number of registered users in the system. In recent years, research work proves that Knowledge graphs have yielded better in generating quality recommendation results and alleviating sparsity and cold start issues. Network embedding techniques try to learn high quality feature vectors automatically from network structures, enabling vector-based measurers of node relatedness. Keeping the strength of Network embedding techniques, the proposed citation-based recommendation approach makes use of heterogeneous network embedding in generating recommendation results. The novelty of this paper is in exploiting the performance of a network embedding approach i.e., matapath2vec to generate paper recommendations. Unlike existing approaches, the proposed method has the capability of learning low-dimensional latent representation of nodes (i.e., research papers) in a network. We apply metapath2vec on a knowledge network built by the ACL Anthology Network (all about NLP) and use the node relatedness to generate item (research article) recommendations.
Introductory Editorial (Medical Equipment Insights)
Irfan Ahmed
Medical Equipment Insights , 2012,
Exploiting Geometric Advantages of Cooperative Communications for Energy Efficient Wireless Sensor Networks  [PDF]
Irfan AHMED, Mugen PENG, Wenbo WANG
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2008, DOI: 10.4236/ijcns.2008.11008
Abstract: Energy efficiency and enhanced backbone capacity is obtained by exploiting the geometric orientation of cooperative nodes in wireless sensor network. The cooperative communication in wireless sensor networks (WSN) gives us leverage to get the inherent advantages of its random node’s locations and the direction of the data flow. Depending on the channel conditions and the transmission distance, the number of cooperative nodes is selected, that participate in an energy efficient transmission/reception. Simulation results show that increasing the cooperative receive diversity, decreases the energy consumption per bit in cooperative communications. It has also been shown that the network backbone capacity can be increased by controlled displacement of antennas at base station at the expense of energy per bit.
A Unified Comparison of CDMA EVDO Key Performance Parameters in Multi-vendor Environment
Rabnawaz Anwar,Irfan Ahmed
International Journal of Distributed and Parallel Systems , 2012,
Abstract: With the standardization of CDMA2000-1x, EVDO, and its subsequent release/revisions (0, A, B, and C) each telecom vendor continues to develop their equipment as well as network management software for supporting EVDO services and defines EVDO performance parameters separately. This leads to sort of redundancy and perplexity in multivendor network environments in which network optimization engineer has to deal with all these performance parameters to optimize the system performance. There is need tounify these different EVDO performance parameters defined by different vendors to overcome this redundancy and confusion. To complete this objective we first has identified different EVDO key performance indicators defined by different vendors through their software i.e. element management systems (EMS). After identification of these KPIs we then take one most important KPI i.e., the Session Setup Success Rate (SSSR) and analyses its constituent counters and find out differences through dailystatistic reports, standard definitions formula and message flow diagrams defined by each vendor. Thenwe proposed a new KPI, HSN Ratio (Harmonic mean of session setup success and session negotiation success Ratios) to get a complete picture of end-to-end session setup success rate. Finally we have collected 15 days hourly statistic report of SSSR and session negotiation success rate defined by eachvendor through their EMS’s and applied minimum mean square error method to unify the proposed HSN ratio. As a result of this process we have figure out differences between multivendor KPIs and minimizes these differences to unify them. Similarly this whole process could be repeated to unify other EVDO KPIs.
The Professional Medical Journal , 2004,
Abstract: Objectives: To find out the occurrence and frequency ofvariant anastomotic vessels at varying levels in Pakistani cadavers. Design: Twenty well preservedand freshly embalmed cadavers were dissected for the present study. Place and Duration of Study:The study was conducted during year 1995 – 1997 in the department of Anatomy, K.E. MedicalCollege, Lahore. Methods: After cutting the ribs, anastomotic vessels between intercostal arteries weredissected free with the help of magnifying glass. The diameter of each arcade like anastomotic vessel wasnoted with the help of vernier caliper. Results: Arch like communications were found betweenneibouring inter- costal arteries V – VIII in ten and between intercostal arteries IV – X in six cadavers.In four cadavers, no anastomosis was found between intercostal arteries. The arch like anastomoseswere found lying on the surface of the vertebral bodies on the right side and away from aorta onthe left side. Conclusion: The results are comparable with the studies conducted previously with theexception of absence of such anastomotic vessels in four cadavers in the present study. It may be due toracial variation. So the arcades are the rule rather than variant is strengthened and confirmed.
Irfan Ahmed Mughal
The Professional Medical Journal , 2000,
Abstract: The adrenals are closely applied to the upper pole of each kidney. In mammals, the adrenal gland containstwo functionally different types of endocrine tissues i.e. cortex and medulla, which have distinctly differentembryological origin. OBJECTIVE: To observe the age related changes in the rat adrenal gland of the albinorat during postnatal period. SETTING: Ablino rats used were obtained from Animal House of BMSI, JPMC,Karachi. Thirty litter mates of 2,4,6,8 and 10 days of age (postnatal) were used by dividing into five groups.Right adrenal were dissected free, fixed and then stained with 1% toluidine blue solution to study under lightmicroscope. RESULTS AND CONCLUSION: The adrenals which were developed at birth, now organizedmore on 10 day of postnatal life. In all the cortical zones, predominance of dark cells over light cells was thobserved. The intracellular lipid content increased significantly during 1 week of postnatal life.
Irfan Ahmed Mugha
The Professional Medical Journal , 2001,
Abstract: Sustentaculum tali is a projection at the apex of the longitudinal arch and thus occupies a key positionin the subtalar joint. The articular facets of the sustentaculum tali have a variety of configurations.OBJECTIVES To study the variations of articular facets of the sustentaculum tali of the calcanium.MATERIAL & METHODS Total two hundred human calcanei were studied with naked eyeobtained from the Anatomy department of the Punjab Medical College, Faisalabad and K.E. MedicalCollege, Lahore. RESULTS Type I – 78.5% calcanei with long continuous facets. Type II – 13.5% calcaneiwith two facets and Type III – 8% calcanei with medial facets only. CONCLUSION The variations in thefacets are due to different regions and races and may predispose people to subtalar joint instability.
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