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Nadeem AKHTAR(Nadeem AKHTAR ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2
The purpose of this study is to examine the relationship between POS, JR, and Innovation, and to explore the role of job psychological empowerment as a mediator in this relationship. A structured questionnaire was distributed to 25 companies in the petrochemical industry. PLS-SEM 4 was used to analyze the data of 100 valid responses. These findings suggest that employee empowerment (EMPOW) fully mediates the relationship between job resourcefulness (JR) and Innovation (INNOV). The total effect of JR on INNOV is also significant, with a beta coefficient of 0.234 and a t-value of 3.375. However, when the mediating influence of EMPOW is taken into account, the effect of JR on INNOV is no longer significant, with a beta coefficient of 0.100 and a t-value of 1.610. This suggests that EMPOW plays a key role in the relationship between JR and INNOV and that JR may not have a direct impact on Innovation. The study informs the development of interventions or strategies for promoting Innovation in organizations by identifying key factors that facilitate or inhibit the innovation process. The study further contributes to the development of new theories or models on the relationship between perceived organizational support, job resourcefulness, psychological empowerment, and Innovation.
Nadeem FATIMA(Nadeem FATIMA ),Abdul Rahman SHAIK(Abdul Rahman SHAIK ) 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.9
The current study examines the nexus between the capital structure (debt-equity) and firm value (Tobin’s Q) by including profitability (alternatively Return on Assets (ROA) and Return on Equity (ROE)) as a moderator in the companies of Saudi Arabia. The study sample consists of 102 companies listed on Tadawul (the Saudi Arabian stock exchange) from different sectors of Saudi Arabia during the period 2013 to 2020. The study estimates pooled regression, panel regression with fixed and random effects, and dynamic panel regression models to report the results. The study results report that there is a negative and significant association between capital structure and firm value in model 1, while in models 2 and 3 there is a more negative and significant impact between the two study variables compared to model 1 after the inclusion of interaction variable, i.e. profitability in terms of ROA and ROE. The comparative result shows that the companies of Saudi Arabia hold more debt in their capital structure mix, hence evidencing a decrease in the firm value. The reported results also show that models 2 and 3 are better in explaining the impact of capital structure on firm value due to the interaction of profitability compared to model 1.
Muhammad Nadeem,Maham Navida,Kashif Ameer,Aqsa Iqbal,Faiqa Malik,Muhammad Ather Nadeem,Hira Fatima,Aftab Ahmed,Ahmad Din 한국식품저장유통학회 2022 한국식품저장유통학회지 Vol.29 No.4
Watermelon (Citrullus lanatus) is commonly consumed by humans and widely available around the world. It has impressive nutritional properties, a rich phytochemical profile, and various claimed medicinal and health benefits. The major carotenoids in watermelon include lycopene, β-carotene, phytofluene, phytoene, lutein, and neurosporene. Lycopene (approximately 6,888 μg/152 g) is the major bioactive component in the fruit and it reportedly promotes several therapeutic effects, such as anti-cancer and anti-inflammatory activities etc. in humans and animals. Watermelon is also a good source of the amino acid citrulline, which is involved in production of arginine. Pre- and postharvest factors, including fruit sampling area, application of fertilizer, climatic factors, and genetic variability, are known to affect its bioactive compounds and nutrient concentrations. This review summarizes our current understanding of the watermelon phytochemical profile and the factors affecting its bioactivities and therapeutic effects.
Axisymmetric Stagnation Flow of a Micropolar Nanofluid in a Moving Cylinder
Nadeem, S.,Rehman, Abdul,Vajravelu, K.,Lee, Jinho,Lee, Changhoon Hindawi Limited 2012 Mathematical problems in engineering Vol.2012 No.-
<P>An analysis is carried out for axisymmetric stagnation flow of a micropolar nanofluid in a moving cylinder with finite radius. The coupled nonlinear partial differential equations of the problem are simplified with the help of similarity transformations and the resulting coupled nonlinear differential equations are solved analytically by homotopy analysis method (HAM). The features of the flow phenomena, inertia, heat transfer, and nanoparticles are analyzed and discussed.</P>
Annihilating Conditions of Generalized Skew Derivations on Lie Ideals
Nadeem Ur Rehman,Sajad Ahmad Pary,Junaid Nisar 경북대학교 자연과학대학 수학과 2023 Kyungpook mathematical journal Vol.63 No.3
Let A be a prime ring of char(A)̸= 2, L a non-central Lie ideal of A, F a generalized skew derivation of A and p ∈ A, a nonzero fixed element. If pF(η)η ∈ C for any η ∈ L , then A satisfies S4.
Performance Study of Defected Ground Structure Patch Antenna with Etched psi (ψ) Shaped Stubs
Nadeem, Iram,Choi, Dong-You The Korea Institute of Information and Commucation 2018 Journal of information and communication convergen Vol.16 No.4
In this article, a novel design of patch antenna with wide band characteristics is presented. The proposed antenna is having electrical dimensions of $0.14{\lambda}{\times}0.11{\lambda}$ (at lower initial frequency) and footprints of $150mm^2$. Structural parameters optimization shows 3.1-23.5 GHz frequency range for a (reflection coefficient) $S_{11}{\leq}-10dB$ and simulated gain 6.8 dB is obtained. An equivalent circuit model is proposed to get an insight view of antenna. Advanced Systems Design (ADS) simulation results are obtain which confirm the validity of proposed model. Degenerated foster canonical form has been used to explain the reactance and capacitive behavior idea of simulated proposed antenna's input impedance later on an equivalent circuit model and smith chart is also suggested. HFSS and CST have been used to analyze antenna behavior. The proposed antenna can be further used for microwave image detection applications.
Nadeem Qaiser,Naeem Iqbal,Amir Hussain,Naeem Qaiser 대한전기학회 2007 International Journal of Control, Automation, and Vol.5 No.5
This paper proposes a simpler solution to the stabilization problem of a special class of nonlinear underactuated mechanical systems which includes widely studied benchmark systems like Inertia Wheel Pendulum, TORA and Acrobot. Complex internal dynamics and lack of exact feedback linearizibility of these systems makes design of control law a challenging task. Stabilization of these systems has been achieved using Energy Shaping and damping injection and Backstepping technique. Former results in hybrid or switching architectures that make stability analysis complicated whereas use of backstepping some times requires closed form explicit solutions of highly nonlinear equations resulting from partial feedback linearization. It also exhibits the phenomenon of explosions of terms resulting in a highly complicated control law. Exploiting recently introduced Dynamic Surface Control technique and using control Lyapunov function method, a novel nonlinear controller design is presented as a solution to these problems. The stability of the closed loop system is analyzed by exploiting its two-time scale nature and applying concepts from Singular Perturbation Theory. The design procedure is shown to be simpler and more intuitive than existing designs. Design has been applied to important benchmark systems belonging to the class demonstrating controller design simplicity. Advantages over conventional Energy Shaping and Backstepping controllers are analyzed theoretically and performance is verified using numerical simulations.
Nadeem Raza,김기현,Henry Agbe,Suresh Kumar Kailasa,Jan E. Szulejko,Richard J. C. Brown 한국대기환경학회 2017 Asian Journal of Atmospheric Environment (AJAE) Vol.11 No.4
Indoor air pollutants can cause severe health problems, specifically in terms of toxicological impacts on human. Every day, a complex mixture of many air pollutants is emitted from various sources and subject to atmospheric processes that can create varied classes of pollutants such as carboxylic acids, aldehydes, ketones, peroxyacetyl nitrate, and hydrocarbons. To adhere to indoor air quality standards, a number of techniques such as photocatalytic oxidation of various volatile organic compounds (VOCs) have been employed. Among these techniques, titania (TiO2) based photocatalytic reactions have proven to be the best benchmark standard approach in the field of environmental applications. Over the last 45 years, TiO2-based photocatalytic reactions have been explored for the degradation of various pollutants. This review discusses the indoor air quality profile, types of indoor pollutants, available indoor air cleaning approaches, and performance of TiO2- based catalysts. Finally, we have presented the perspectives on the progress of TiO2 induced photocatalysis for the purification of indoor air.
Concentric Core Fiber Design for Optical Fiber Communication
Nadeem, Iram,Choi, Dong-You The Korea Institute of Information and Commucation 2016 Journal of information and communication convergen Vol.14 No.3
Because of rapid technological advancements, increased data rate support has become the key criterion for future communication medium selection. Multimode optical fibers and multicore optical fibers are well matched to high data rate throughput requirements because of their tendency to support multiple modes through one core at a time, which results in higher data rates. Using the numerical mode solver OptiFiber, we have designed a concentric core fiber by investigating certain design parameters, namely core diameter (µm), wavelength (nm), and refractive index profile, and as a result, the number of channels, material losses, bending losses, polarization mode dispersion, and the effective nonlinear refractive index have been determined. Space division multiplexing is a promising future technology that uses few-mode fibers in parallel to form a multicore fiber. The experimental tests are conducted using the standard second window wavelength of 1,550 nm and simulated results are presented.