202 research outputs found
Hydraulic simulations to evaluate and predict design and operation of the Chashma Right Bank Canal
No full textIrrigation systems / Irrigation canals / Flow control / Velocity / Canal regulation techniques / Hydraulics / Simulation models / Design / Operations / Crop-based irrigation / Distributary canals / Water delivery / Policy / Protective irrigation / Water allocation / Water requirements / Sedimentation / Water distribution / Equity / Water conveyance / Pakistan / Chashma Right Bank Canal
Image based dental impression tray selection from maxillary arches using multifeature with ensemble classifier / Muhammad Asif Hasan
No full textDental impression tray is frequently used in dentistry to record patient’s oral structure for clinical oral diagnosis and treatment planning. Manual procedure of taking impressions is costly, time-consuming, and additionally, no research has been done to select dental impression tray from dental arch images using computer vision in real-life scenarios. In this spirit, an intelligent model is proposed based on computer vision and machine learning to select appropriate dental impression trays from maxillary arch images. A dataset of 52 patients’ maxillary arch images that matches one from 4 sizes of Kurten’s impression tray have been acquired. Various sets features such as, colors, textures, and shapes of the images were extracted to better characterize the maxillary arch images. Considering the importance of the features in describing the maxillary arch object and to improve the classification performance, a method based on multi-feature with ensemble classifier is proposed. Besides, the performance of a deep-learning based
multilayer perceptron neural network is also investigated. The proposed multi-feature with ensemble classifier attained 92.31% precision, 91.75% recall, 91.75% accuracy, respectively, on the dataset. This clearly establishes the feasibility of this study. An illustration of a real-life application of the proposed model is also provided
Lightweight Key Management Scheme Using Fuzzy Extractor for Wireless Mobile Sensor Network
No full textThe mature design of wireless mobile sensor network makes it to be
used in vast verities of applications including from home used to the security surveillance. All such types of applications based on wireless mobile sensor network are generally using real time data, most of them are interested in real time communication directly from cluster head of cluster instead of a base station in cluster network. This would be possible if an external user allows to directly access real time data from the cluster head in cluster wireless mobile sensor network instead of accessing data from base station. But this leads to a serious security breach and degrades the performance of any security protocol available in this domain. Most existing schemes for authentication and cluster key management for external users, exchange a number of messages between cluster head and base station to allow external to access real time data from the base station instead of cluster head. This increase communication cost and delay in such real time access information. To handle this critical issue in cluster wireless mobile sensor network, we propose a lightweight authentication and key management scheme using a fuzzy extractor. In this scheme, any external user can access data directly from the cluster head of any cluster without the involvement of the base station. The proposed scheme only
uses the one-way hash functions and bitwise XOR operations, apart from the fuzzy extractor method for the user biometric verification at the login phase. The presented scheme supports scalability for an increasing number of nodes using polynomials. The proposed scheme increases the life-time of the network by decreasing the key pool size
Micro-Supercapacitors for Self-Powered Biosensors
No full textAlthough batteries are a highly popular energy source in biosensors, batteries can
be an economic limitation for low-cost sensing applications and pose significant
challenges in miniaturization, biocompatibility, and disposal. To surmount such
issues, “self-powered sensors” gain the spotlight thanks to their energy harvesting from the environment through embedded miniaturized systems. In this
review, the recent developments in self-powered devices are summarized with a
specific focus on the integration of supercapacitors with sensors and biosensors.
The working principles of microsupercapacitors, fabrication methods, their
integration with biosensors, and their ultimate applications (i.e., biomedical
monitoring and analytical biomarker detection) are described. Different energy
harvesting systems are summarized and their integration with self-powered
sensors or biosensors is highlighted. The limitations and challenges of the
existing approaches and the future of supercapacitor-integrated sensing systems
are also critically discussed
STUDY FORMS OF FEMINISM IN SHORT STORY COLLECTION PARODIA BY ISTIFARI HASAN
No full textThe focus of this research actually lies on the descriptive qualitative research model with a socialfeminist approach. By using the object collection of Parodia short stories written by Istifari Hasan, researcherstried to show the forms of feminism contained therein. From sources that have been collected in parallel,researchers found that there are feminism forms contained in a collection of Parodia short stories by IstifariHasan that are full of social values in real community life in socializing, especially for women. In this case,researchers also aim to cultivate the analysis of short stories in the area of Indonesian literature. With theshort story analysis that carries the theme of feminism, it is hoped that readers or literary connoisseurs can getcloser to understanding the meaning or message of the author. After the researcher found a form of feminismin a collection of Parodia short stories written by Istifari Hasan, the researcher tried to look back at the realitythat occurred in the life of the surrounding community which was not much different from the eventscontained in literary works, especially short stories which are indeed often the object of social criticism forwriters.Fokus pada penelitian ini sebenarnya terletak pada model penelitian deskriptif kualitatif denganpendekatan sosialfeminis. Dengan menggunakan obyek kumpulan cerpen Parodia karya Istifari Hasan,peneliti berusaha menunjukkan bentuk-bentuk feminism yang terkandung didalamnya. Dari sumber yangtelah dikumpulkan secara paralel, peneliti menemukan bahwasannya terdapat bentuk-bentuk feminismyang terkandung dalam kumpulan cerpen Parodia karya Istifari Hasan yang sarat akan nilai-nilai sosialdalam kehidupan masyarakat nyata dalam bersosialisasi, terutama bagi kaum perempuan. Dalam hal ini,peneliti juga bertujuan untuk membudayakan analisis karya cerpen diranah kesustraan Indonesia. Denganadanya analisis cerpen yang yang mengangkat tema feminism, diharapakan pembaca ataupun penikmatsastra dapat lebih dekat dalam memahami makna atau pesan penulis. Setelah peneliti menemukan bentukfeminism dalam kumpulan cerpen Parodia karya Istifari Hasan peneliti mencoba melihat kembali realitasyang terjadi pada kehidupan masyarakat sekitar yang tidak jauh berbeda dengan kejadian yang terdapat didalam karya sastra, terutama cerpen yang memang sering menjadi obyek kritik sosial bagi penulis
اردو افسانہ: نئے تناظر کی تلاش میں
No full textThis article presents a brief review of the last one hundred years of the Urdu short story. Tracing the evolving trends during this period, the writer focuses on the various aspects of the contemporary Urdu short story and specifically discusses the contributions of Intezār Husain, Qurat-al Ain Haider, Abdullāh Husain, Enver Sajjād, Khalida Husain, Asad Muhammad Khān, Hasan Manzar, Naiyer Masūd, Iqbal Majīd and Zakia Mashhadī
The Study on Awareness of Empowering Minds: The Role of Psycho-Education in Mental Health
No full textMental health disorders pose a significant public health challenge in Pakistan, with high prevalence rates and adverse impacts on individual well-being and societal functioning. This abstract highlights key findings from available research on mental disorders and mental health prevention in Pakistan, drawing upon relevant studies to inform future interventions and policy initiatives. Studies have identified common mental health disorders such as depression, anxiety, and post-traumatic stress disorder (PTSD) among the population, with intimate partner violence emerging as a significant risk factor for psychological distress. Psychological distress is also associated with physical morbidity, highlighting the interconnectedness of mental and physical health outcomes. Preventive interventions, including awareness campaigns, community-based programs, and access to mental health services, are essential to address the burden of mental illness and reduce stigma. These initiatives aim to promote early detection, increase help-seeking behavior, and provide timely support to needy individuals. However, further research and collaborative efforts are necessary to develop culturally appropriate interventions that address the unique challenges faced by individuals and communities in Pakistan and improve overall mental health outcomes
Thermal Turbulence in Variable Property Channel Flows: DNS and RANS
No full textOver the past decades, engineers have focused on a common goal - to reduce emissions by making industrial processes more efficient and by utilizing renewable energy sources. One possibility to reach this goal can be achieved by employing processes with non-ideal fluids, such as fluids at supercritical conditions in refrigeration, heat pump cycles and power cycles. Most of the flows in industry are turbulent and hence the need to study turbulence in non-ideal fluids arose. Turbulence in non-ideal fluids is extremely challenging since there are many complex effects at play. One such effect is caused by variations in properties, which also occurs in compressible flows, flows with high concentration gradients, or flows in heat exchangers.This thesis presents a review of the existing theory on semi-local scaling for variable property flows with the aim to take it one step further and apply it to turbulent heat flux modeling. Two types of variable property cases are analysed in this thesis; (1) low-Mach number flows with uniform pseudo-heating sources, (2) high-Mach number flows with non-uniform viscous heating. For the former, a Direct Numerical Simulation (DNS) data-base, already available at TU Delft, has been post-processed with the main goal to investigate if the semi-local theory can also be applied to thermal turbulence and its modeling. For the latter, additional DNS simulations of high-Mach number channel flows have been performed to investigate how the viscous heating and its correlations can be accounted for in the semi-local scaling framework.Using a 2-equation heat flux model, we find that modeling thermal turbulence in semi-local scales considerably improves the results for low-Mach number flows. However, for high-Mach number flows, additional unknown (closure) terms arise due to fluctuations in the viscous heating source. A model for the source term in the enthalpy variance equation is successfully proposed. In addition, the DNS study of two high-Mach number flows with constant semi-local Reynolds number profiles shed light on the importance of a newly defined parameter (modified Eckert number) and also unveils one of the most important conditions in which semi-local theory can be compromised, e.g. extreme density gradients.Mechanical Engineering | Energy and Process Technolog
An unusual presentation of left ventricular pseudoaneurysm following CABG in a 55 year old female
No full textGenetic Analysis and Combining Ability Studies for Yield Related Characters in Rapeseed
No full textCombining ability analysis has a key position in rapeseed breeding. To estimate the combining ability effects for yield controlling traits in rapeseed, three testers and five lines were crossed using line × tester design in randomized complete block design with three replications. Mean sum of squares of analysis of variances for genotypes were significant for all of the traits; indicating the presence of significant genetic variation. All the interactions between lines and testers exhibited significant results of mean sum of squares for combining ability. Line ‘Duncled’ was found good general combiner for decreased Plant height (PH:-2.0), Days taken to 50% flowering (DF: -15.8) and Days taken to maturity (DM:-3.4) while tester ‘Punjab Sarson” for increased Number of seed/siliqua (SS: 2.2), Number of siliquae/plant (SP: 2.2) and decreased DF (-3.0) traits. Significant general and specific combining ability effects were observed. The best hybrid combination on the basis of specific combining ability effects was “Durre-NIFA × ZN-M-6” for Seed yield/plant (SY: 2.7), DF (-6.1) and DM (-3.5). PH (-0.2), Siliqua length (SL: -0.1), SS (-0.03) and SY (0.2) showed non-additive genetic effects. The half of the characters revealed additive and remaining half showed non-additive genetic effects. The present study unveiled the importance of both type of genetic effects demanding the application of integrated breeding approaches for exploiting the variability. ‘Punjab Sarson × ZN-M-6’ exposed maximum SS (30) and SP (837). Maximum SY (75.9g) and minimum DF (64) were showed by ‘Legend × Duncled’. The present research delivers valuable information of genotypes for promoting yield by means of improving yield related characters
- …
