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Improved tabledng behavior of paracetamol in the presence of polyvinylpyrrolidone additive: Effect of mixing conditions

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Particuology 2019年第2期17卷 9-18页

作者： Ayuk Agbor Rose waseem Kaialy School of Pharmacy Faculty of Science and Engineering University of Wolverhampton Wolverhampton WV1 1LY UK

Monoclinic paracetamol (PA) is notorious as a poorly compactible model drug. Polyvinylpyrrolidone (PVP) is a polymer that can act as an effective binder to improve the mechanical properties of PA. It is surprising however that the role of mixing conditions on the physicochemical and mechanical properties of PA-PVP mixtures has not been reported previously. The results of this work showed that PA-PVP mixtures containing 5%(w/w) PVP prepared using high energy mixing conditions had considerably smaller particle size distributions and higher cohesivities than mixtures prepared using low energy mixing conditions. Solid-state analysis did not detect any change in the monoclinic crystalline form of PA after mixing with PVP. The following rank order of tabletability for PA-PVP mixtures was obtained according to the mixing condition: low shear-medium shear< dry high shear< wet high shear< high-speed homogenization. A higher level of hydrogen bonding was detected in the mixtures prepared via high energy mixing conditions than in those prepared using low energy mixing conditions. Mixing is therefore a critical process that needs to be optimized during the preparation of in teractive mixtures for tableting.

关键词： Direct compression Interactive mixtures Hydrogen bonding Mechanical properties Physicochemical properties Tableting

Natural resource scarcity,fossil fuel energy consumption,and total greenhouse gas emissions in top emitting countries

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Geoscience Frontiers 2024年第2期15卷 85-99页

作者： Jiannan Wang waseem Azam College of Economics and Management South China Agricultural UniversityGuangzhouChina Groupe Ecole de Commerce de Lyon LyonFrance Institute Supérieur de l’Environnement-ISE LYON France

Natural resource scarcity,fossil fuel energy consumption,and total greenhouse gas emissions are critical issues that require immediate *** the global population steadily increasing and economies expanding,the demand for natural resources,particularly fossil fuels,has experienced an unprecedented *** surge in consumption is directly linked to the alarming rise in greenhouse gas *** study examines the nexus between agricultural nitrous oxide emissions and natural resource scarcity,taking into account the dynamics of agriculture,forestry,fishing value addition,fossil fuels,and total greenhouse gas emissions in top-emitting countries between 1971 and *** resource scarcity positively correlates with agriculture,forestry,fishing,fossil fuel energy consumption,and total greenhouse gas *** is a decrease in natural resource scarcity in countries that emit agricultural nitrous oxide,forestry,fishing emissions,fossil fuel energy consumption,and greenhouse gas ***-makers may promote sustainable development,mitigate climate change,and ensure the longterm viability of agricultural systems by addressing the dynamics of agriculture,forestry,and fishing value addition in top-emitting *** strategic policy interventions,supported by technology transfer,capacity building,and market-based instruments,the agricultural,forestry,and fishing sector can achieve a more sustainable future while addressing the challenges of natural resource scarcity.

关键词： Resource scarcity Non-renewable energy CO_(2)emissions Top-emitting countries

Estimation of Cloud Node Acquisition

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Tsinghua Science and Technology 2014年第1期19卷 1-12页

作者： waseem Ahmed Yongwei Wu Department of Computer Science and Technology Tsinghua National Laboratory for Information Science and Technology (TNLIST) Tsinghua University Research Institute of Tsinghua University in Shenzhen

Over the past decade, there has been a paradigm shift leading consumers and enterprises to the adoption of cloud computing services. Even though most cases are still in the early stages of transition, there has been a steady increase in the implementation of the pay-as-you-go or pay-as-you-grow models offered by cloud providers. Whether applied as an extension of virtual infrastructure, software, or platform as a service, many users are still challenged by the estimation of adequate resource allocation and the wide variations in pricing. Customers require a simple method of predicting future demand in terms of the number of nodes to be allocated in the cloud environment. In this paper, we review and discuss existing methodologies for estimating the demand for cloud nodes and their corresponding pricing policies. Based on our review, we propose a novel approach using the Hidden Markov Model to estimate the acquisition of cloud nodes.

关键词： cloud computing resource allocation hidden states probability distribution

TRUSED:A Trust-Based Security Evaluation Scheme for A Distributed Control System

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Computers, Materials & Continua 2023年第2期74卷 4381-4398页

作者： Saqib Ali Raja waseem Anwar Sultan Qaboos University Muscat123Sultanate of OMAN Arab Open University Muscat130Sultanate of OMAN

Distributed control systems(DCS)have revolutionized the communication process and attracted more interest due to their pervasive computing nature(cyber/physical),their monitoring capabilities and the benefits they ***,due to distributed communication,flexible network topologies and lack of central control,the traditional security strategies are inadequate formeeting the unique characteristics ***,malicious and untrustworthy nodes pose a significant threat during the formation of a DCS ***-based secure systems not only monitor and track the behavior of the nodes but also enhance the security by identifying and isolating the malicious node,which reduces the risk and increases network *** this research,we offer TRUSED,a trust-based security evaluation scheme that both,directly and indirectly,estimates each node’s level of trustworthiness,incorporating the cumulative trust *** addition,simulation results show that the proposed technique can effectively identify malicious nodes,determine their node’s trustworthiness rating,and improve the packet delivery ratio.

关键词： Malicious network lifetime risk management security trust untrustworthy

A probabilistic model of quantum states for classical data security

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Frontiers of physics 2023年第5期18卷 281-292页

作者： Muhammad waseem Hafiz Seong Oun Hwang Department of IT Convergence Engineering Gachon UniversitySeongnam 13120South Korea Department of Computer Engineering Gachon UniversitySeongnam 13120South Korea

The phenomenal progress of quantum information theory over the last decade has substantially broadened the potential to simulate the superposition of states for exponential speedup of quantum algorithms over their classical ***,the conventional and modern cryptographic standards(encryption and authentication)are susceptible to Shor’s and Grover’s algorithms on quantum *** significant improvement in technology permits consummate levels of data protection by encoding classical data into small quantum states that can only be utilized once by leveraging the capabilities of quantum-assisted classical *** the frequent data breaches and increasingly stringent privacy legislation,we introduce a hybrid quantum-classical model to transform classical data into unclonable states,and we experimentally demonstrate perfect state transfer to exemplify the classical *** alleviate implementation complexity,we propose an arbitrary quantum signature scheme that does not require the establishment of entangled states to authenticate users in order to transmit and receive arbitrated states to retrieve classical *** consequences of the probabilistic model indicate that the quantum-assisted classical framework substantially enhances the performance and security of digital data,and paves the way toward real-world applications.

关键词： information security quantum-classical cryptography quantum information processing quantum spin states spin-1/2 algebra user authentication

Smartphone-based Driving Behavior Detection

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Smartphone-based Driving Behavior Detection

作者： Zulfiqar Ali bhutto 北京邮电大学

学位级别：硕士

随着科技的发展,APP的日益普及,司机对获取驾驶行为信息的需求也逐渐增大。驾驶本论文的主要目标是通过将GPS,传感器植入与Wi-Fi直连的智能手机改善交通和车辆的行为。为了进一步扩展论文所提出的怎么改变驾驶观念和改善良好驾驶行为的...

随着科技的发展,APP的日益普及,司机对获取驾驶行为信息的需求也逐渐增大。驾驶本论文的主要目标是通过将GPS,传感器植入与Wi-Fi直连的智能手机改善交通和车辆的行为。为了进一步扩展论文所提出的怎么改变驾驶观念和改善良好驾驶行为的问题,本文通过扫描车辆信息,提取车辆准确的速度、制动、转弯等紧急情况的数据:即集成统一的多模式功能。因为目前司机往往无法掌握这种准确性,进而忽略了驾驶的行为,从中导致了错误的发生。APP的发展和进步给司机们提供了获得最优信息,避免信息不透明,特别是了解他们的驾驶中的犹豫行为的途径,从而改善了他们的驾驶行为。因为他们会知道他们的驾驶状态,所以他们在路上行驶的顺利、安全,避免出现更多的意外问题.APP的功能具有用户友好性,在测试阶段,它通过放置在两个车辆里的智能手机进行Wi-Fi直连,不使用手机的移动数据。并且APP还与GPS和传感器(如加速度计和陀螺仪)相互连接,当两辆车都在路上时,智能手机APP将通过Wi-Fi Direct建立连接启动,并进行对其他车辆跟踪,其中包括速度。其中紧急情况发生,控制,正常或紧急制动和转弯记录都将自动生成并显示,进而准确表明不好的或危险的驾驶行为。APP出现的主要作用是促使司机获得信息并不断更新,它将带来新的驾驶意义,通过适应各自驾驶车辆的良好的驾驶行为,帮助司机成为一个明智的人,同时也将提升道路安全性。

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Study for obtaining the exact solutions for the propagation of pulses in optical fibers

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Communications in Theoretical Physics 2024年第10期76卷 12-23页

作者： Arzu Akbulut waseem Razzaq Filiz Tascan Department of Mathematics Faculty of Arts and ScienceBursa Uludağ UniversityBursaTürkiye Math Center House no 87 Rahmanyia ColonyVehariPakistan Department of Mathematics and Computer Sciences Faculty of Arts and ScienceEskisehir Osmangazi UniversityEskisehirTürkiye

In this study, the exact solutions for the propagation of pulses in optical fibers are *** values are given in the model used, and two nonlinear differential equations are *** equations are reduced to ordinary differential equations with the help of wave transformations. Then, the obtained differential equations are solved by two different methods,namely the modified simplest equation and the modified Kudryashov procedures. The solutions are given by hyperbolic, trigonometric and rational functions and the results are useful for optics,engineering and other related areas. Finally three-dimensional, contour and two-dimensional shapes are given for some solutions. These figures are important for understanding the motion of the wave. The given methods are applied to the equations for the first time. To the best of the authors' knowledge, these results are new and have not been obtained in the literature. The results are useful for applied mathematics, physics and other related areas.

关键词： traveling wave transformation exact solutions the modified simplest equation procedure

Flow-injection Determination of Cysteine,N-Acetyl Cysteine and Glutathione in Pharmaceuticals via Potassium Ferricyanide-Fe(Ⅲ) Spectrophotometric System

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Chemical Research in Chinese Universities 2010年第6期26卷 893-898页

作者： waseem Amir YAQOOB Mohammad NABI Abdul Department of Chemistry COMSATS Institute of Information Technology Department of Chemistry University of Balochistan

A simple flow injection spectrophotometric method is reported for the determination of cysteine,N-acetyl cysteine and glutathione based on the reduction of Fe（Ⅲ）/ferricyanide,the in situ reduced ions are reacted with unreduced portion of ferricyanide/Fe（Ⅲ） to form soluble Prussian blue,which is monitored at 735 *** calibration graphs are linear in the concentration ranges of（1―100）×10-6 mol/L for cysteine and N-acetyl cysteine,and（1―50）×10-6 mol/L for *** relative standard deviations of 1.8%,2.5% and 1.9% were found for eleven replicate analyses of 5×10-6 mol/L cysteine,N-acetyl cysteine and *** limits of detection（3σ blank） at 5×10-7 mol/L for cysteine,and 3×10-7 mol/L for N-acetyl cysteine and glutathione were *** proposed method allowed 60 injections/*** effects of common substances present in pharmaceuticals and human physiological fluids were *** method was applied to determining cysteine in pharmaceutical formulations with the recoveries in a range of 97% to 106% and the results obtained are agreed well with labeled values.

关键词： Flow injection Spectrophotometry Cysteine Prussian blue Fe(Ⅲ) Ferricyanide Pharmaceutical

Speech Spoofing Detection in Voice Based Biometric System

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Speech Spoofing Detection in Voice Based Biometric System

作者： Moazzam Ali bhutto 华南理工大学

学位级别：硕士

Tracking multiple passwords,PINs,memorable dates,and other authentication details requires remote access to one of the less attractive challenges of *** voice-based verification as a biometric technology for both children and adults can be a good alternative to old memory-based *** voice for authentication may be useful in many application domains,including security,protection,education,communication-based services,and Webbased ***,voice-based biometrics applications are subject to different types of spoofing *** easiest and affordable subversion for a voice spoofing attack is a replay *** a pre-recorded speech sample,replay attack offers a real risk for automatic speaker verification *** countermeasures have been developed *** efforts focus on finding more distinctive features and many new features have been *** types of features namely Mel Frequency Cepstral Coefficients（MFCC）,Linear Frequency Cepstral Coefficients（LFCCs）,inverted Mel Frequency Cepstral coefficients（IMFCCs）,Constant Q Cepstral Coefficients（CQCCs）,and bottleneck feature were analyzed with the public data sets ASV spoof 2017 and BTAS *** experimental results show that MFCCs and bottleneck features give similar *** of them significantly outperform others（including recently proposed CQCCs）.However,the number of filters and Cepstral bins are essential to the success of *** we used recurrent neural networks for automatic replay spoofing attack detection,we focused on recurrent neural networks with better recurrent units that involve gating mechanism,such as a Long Short Term Memory（LSTM）unit and Gated Recurrent Unit（GRU）.Our results shows that neural networks performed better then GMM on ASV Spoof 2017 and on BTAS 2016 we got best results of GRU models.

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