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| 1 | Low-temperature sintered(Na_(1/2)Bi_(1/2))TiO_(3)-based incipient piezoceramics for co-fired multilayer actuator application显示文摘Low-temperature sintered(Na_(1/2)Bi_(1/2))_(0.935)Ba_(0.065)Ti_(0.975)(Fe_(1/2)Nb_(1/2))_(0.025)O_(3)(NBT-BT-0.025FN)lead-free incipient piezoceramics were investigated using high-purity Li_(2)CO_(3) as sintering aids.With the ≤0.5 wt%Li_(2)CO_(3) addition,the introduced Li^(+) cations precede to enter the A-sites of the perovskite lattice to compensate for the A-site deficiencies.Once the addition exceeds 0.5 wt%,the excess Lit cations will occupy B-sites and give rise to the generation of oxygen vacancies,which accelerate the mass transport and thus lower the sintering temperature effectively from 1100℃ down to 925℃.It was also found that a small amount of Lit addition has little effect on the phase structure and electromechanical properties of the system,but overweight seriously disturbs these characteristics because of the large lattice distortion.The sintered NBT-BT-0.025FN incipient piezoceramics with 1.25 wt%Li_(2)CO_(3) addition at 925℃ provides a large strain of 0.33% and a corresponding large signal piezoelectric coefficient d_(33)^(*) of 550 pm/V at 60 kV/cm,indicating this system is a very promising candidate for lead-free co-fired multilayer actuator application. | Pengyuan Fan Yangyang Zhang Shan-Tao Zhang Bing Xie Yiwei Zhu Mohsin Ali Marwat Weigang Ma Kai Liu Liang Shu Haibo Zhang | 2019 | Journal of Materiomics2019，5，3： | 3 |
| 2 | Comparison of plas- ma viscosity and fibrinogen concentration in hypertensive and normotensive diabetics显示文摘 | KHAN TM MARWAT MA REHMAN H | 2005 | J Ayub Med Coll Abbottabad2005，17，4： | 1 |
| 3 | Weed management:A case study from North-West Pakistan 显示文摘 | Marwat K B Hashim S All H | 2010 | Pakistan Journal of Botany2010，，： | 1 |
| 4 | Pattems of ocular trauma显示文摘 | Babar T F Khan M T Marwat M Z | 2007 | J Coil Physicians Surg Pak2007，17，3： | 1 |
| 5 | Miscibility between PS and PSAN Affected by Solvent and Temperature of the System显示文摘The influence of solvent on the miscibility of polystyrene(PS) and poly(styrene-co-acrylonitrile)(PSAN) blends has been investigated viscometrically. The miscibility of different PS/PSAN blend(30/70, 50/50 and 70/30) compositions in acetone and benzene at 20, 30, and 40 °C was investigated on the basis of the sign of Chee(ΔB and ), and Sun's(α) criteria. The values of these parameters were evaluated from the analyses of reduced viscosity data of binary(solvent/polymer) and ternary(solvent/polymer1/polymer2) polymer systems. These investigations indicated partial miscibility for both the blend systems. However, PS/PSAN/acetone blend system showed somewhat higher partial miscibility than the PS/PSAN/Benzene blend system highlighting the impact of solvent over the polymer-polymer interactions and hence their miscibility. The results obtained through viscometry were also corroborated by the refractive index and density results for the blends under study. The effect of temperature on miscibility in both the cases was almost negligible. | Zafarullah Khan Marwat Musa Kaleem Baloch | 2014 | Chinese Journal of Polymer Science2014，32，11： | 1 |
| 6 | Thrombocytopenia as an Indicator of Malaria in Adult Population显示文摘 | Shiraz Jamal Khan Yasir Abbass Mumtaz Ali Marwat Neena Valecha | 2012 | Malaria Research and Treatment2012，，： | 1 |
| 7 | High energy storage performance for dielectric film capacitors by designing 1D SrTiO_(3)@SiO_(2) nanofillers显示文摘The development of advanced dielectric film materials with high energy storage performance is of critical significance for pulsed power capacitor applications.Nevertheless,the low discharged energy density(Ue)of current dielectric film material restricts their further application.In this work,core-shell structured SrTiO_(3)@SiO_(2) nanowires(ST@SiO_(2) NWs)fillers are fabricated based on interface engineering for high Ue.The optimized SiO2 insulating layer could effectively confine the mobility of space charge carriers in the interfacial zone between ST NWs and thick SiO2 insulating layer,thus reducing the interfacial polarization between the interface of nanofillers/polymer,which could be used to optimize the electric field strength and electric displacement of the corresponding nanocomposite.As a result,this nanocomposite film simultaneously exhibits enhanced maximum applied electric field(Emax)and(Dmax-Pr)values,thus releasing an ultrahigh discharged energy density of 14.7 J/cm^(3) at 390 MV/m,which is 99%higher than that of the conventional ST/P(VDF-CTFE)(without SiO2 coating)nanocomposite,and it is almost 2.5 times that of pure P(VDF-CTFE).This work demonstrates the superiority of the core-shell structured paraelectric nanowire in enhancing the energy storage performance of dielectric film capacitors,which is expected to guide the design of advanced energy-storage nanocomposites. | Bing Xie Ling Zhang Mohsin Ali Marwat Yiwei Zhu Weigang Ma Pengyuan Fan Haibo Zhang | 2018 | Journal of Advanced Dielectrics2018，8，6： | 0 |
| 8 | Text Augmentation-Based Model for Emotion Recognition Using Transformers显示文摘Emotion Recognition in Conversations(ERC)is fundamental in creating emotionally intelligentmachines.Graph-BasedNetwork(GBN)models have gained popularity in detecting conversational contexts for ERC tasks.However,their limited ability to collect and acquire contextual information hinders their effectiveness.We propose a Text Augmentation-based computational model for recognizing emotions using transformers(TA-MERT)to address this.The proposed model uses the Multimodal Emotion Lines Dataset(MELD),which ensures a balanced representation for recognizing human emotions.Themodel used text augmentation techniques to producemore training data,improving the proposed model’s accuracy.Transformer encoders train the deep neural network(DNN)model,especially Bidirectional Encoder(BE)representations that capture both forward and backward contextual information.This integration improves the accuracy and robustness of the proposed model.Furthermore,we present a method for balancing the training dataset by creating enhanced samples from the original dataset.By balancing the dataset across all emotion categories,we can lessen the adverse effects of data imbalance on the accuracy of the proposed model.Experimental results on the MELD dataset show that TA-MERT outperforms earlier methods,achieving a weighted F1 score of 62.60%and an accuracy of 64.36%.Overall,the proposed TA-MERT model solves the GBN models’weaknesses in obtaining contextual data for ERC.TA-MERT model recognizes human emotions more accurately by employing text augmentation and transformer-based encoding.The balanced dataset and the additional training samples also enhance its resilience.These findings highlight the significance of transformer-based approaches for special emotion recognition in conversations. | Fida Mohammad Mukhtaj Khan Safdar Nawaz Khan Marwat Naveed Jan Neelam Gohar Muhammad Bilal Amal Al-Rasheed | 2023 | Computers, Materials & Continua2023，76，9： | 0 |
| 9 | Reconfigurable Compact Wideband Circularly Polarised Dielectric Resonator Antenna for Wireless Applications显示文摘In this work,a novel compact wideband reconfigurable circularly polarised(CP)dielectric resonator antenna(DRA)is presented.The L-shaped Dielectric resonator antenna is excited by an inverted question mark shaped feed.This arrangement of feed-line helps to generate two orthogonal modes inside the DR,which makes the design circularly polarised.A thin micro-strip line placed on the defected ground plane not only helps to generate a wideband response but also assist in the positioning of the two diode switches.These switches located at the left and right of the micro-strip line helps in performing two switching operations.The novel compact design offers the reconfigurability between 2.9–3.8 GHz which can be used for different important wireless applications.For the switching operation I,the achieved impedance bandwidth is 24%while axial ratio bandwidth(ARBW)is 42%.For this switching state,the design has 100%CP performance.Similarly,the switching operation II achieves 60%impedance bandwidth and 58.88%ARBW with 76.36%CP performance.The proposed design has a maximum measured gain of 3.4 dBi and 93%radiation efficiency.The proposed design is novel in terms of compactness and performance parameters.The prototype is fabricated for the performance analysis which shows that the simulated and measured results are in close agreement. | Shahid Khan Xin Cheng Ren Haider Ali Camel Tanougast Abdul Rauf Safdar Nawaz Khan Marwat Muhammad Rizwan Anjum | 2021 | Computers, Materials & Continua2021，，8： | 0 |
| 10 | Cyber Secure Framework for Smart Containers Based on Novel Hybrid DTLS Protocol显示文摘The Internet of Things (IoTs) is apace growing, billions of IoT devicesare connected to the Internet which communicate and exchange data among eachother. Applications of IoT can be found in many fields of engineering and sciencessuch as healthcare, traffic, agriculture, oil and gas industries, and logistics. Inlogistics, the products which are to be transported may be sensitive and perishable, and require controlled environment. Most of the commercially availablelogistic containers are not integrated with IoT devices to provide controlled environment parameters inside the container and to transmit data to a remote server.This necessitates the need for designing and fabricating IoT based smart containers. Due to constrained nature of IoT devices, these are prone to different cybersecurity attacks such as Denial of Service (DoS), Man in Middle (MITM) andReplay. Therefore, designing efficient cyber security framework are required forsmart container. The Datagram Transport Layer Security (DTLS) Protocol hasemerged as the de facto standard for securing communication in IoT devices.However, it is unable to minimize cyber security attacks such as Denial of Serviceand Distributed Denial of Service (DDoS) during the handshake process. Themain contribution of this paper is to design a cyber secure framework by implementing novel hybrid DTLS protocol in smart container which can efficientlyminimize the effects of cyber attacks during handshake process. The performanceof our proposed framework is evaluated in terms of energy efficiency, handshaketime, throughput and packet delivery ratio. Moreover, the proposed framework istested in IoT based smart containers. The proposed framework decreases handshake time more than 9% and saves 11% of energy efficiency for transmissionin compare of the standard DTLS, while increases packet delivery ratio andthroughput by 83% and 87% respectively. | Waseem Ullah Khan Safdar Nawaz Khan Marwat Salman Ahmed | 2022 | Computer Systems Science & Engineering2022，43，12： | 0 |
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