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Jamil,M. Rha,Eui-Shik 한국자원식물학회 2004 Plant Resources Vol.7 No.3
This study was carried out to investigate seed germination and seedling of cabbage and sugar beet in four treatments of salinity including 0 (control), 0.5, 1.0 and 1.5% NaCl. The results showed that different treatments of salinity had considerable effects on the germination and root and shoot length of cabbage and sugar beet. Percent of germination in both species showed significant decrease with increasing salinity up to 1.5% NaCl. This decrease was more evident in cabbage when compared to sugar beet. The required time for germination increased with high levels of salinity. The seedling growth of both species were inhibited by all salinity levels. Particularly at 1.0 and 1.5% NaCl, no measurable length was observed in cabbage and sugar beet. At 0.5% NaCl root growth of both plant species was more affected as compared to shoot growth by salinity.
Jamil Muhammad,J.T. Rhee 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.2
We used the frequency-dependent response of an ITO/Alq3(60 nm)/Al device at two different bias voltages to perform an equivalent-circuit analysis of organic light-emitting diodes. The complex impedance Z of the device was measured in the frequency range of 40 Hz 1 MHz. A Cole-Cole plot showed that there were two dielectric relaxations at a bias below the turn-on voltage and one relaxation at a bias above the turn-on voltage. We were able to interpret the frequency-dependent response in terms of the equivalent-circuit model of a contact resistance Rs in series with a parallel combination of a resistance Rp and a capacitance Cp. We obtained a contact resistance Rs of around 90 , mainly from the ITO anode.
Administrative Development and Reform in the Arab World
Jamil E. Jreisat 연세대학교(미래캠퍼스) 빈곤문제국제개발연구원 2009 地域發展硏究 Vol.18 No.2
Despite significant steps on the path of reform, public administration in the Arab world continues to face considerable obstacles. This study attempts to (1) describe major historical influences that gave current Arab administrative systems some of their key attributes; (2) define certain critical impediments of contemporary Arab bureaucracies that reduce the effectiveness of their performance (3) recognize contextual developments that require expansion and adaptation of current administrative knowledge, skills, and behavior; and, (4) suggest vital components of integrated strategies for future improvements of public management performance.
A 10-year overview of chronic orofacial pain in patients at an oral medicine center in Iran
Jamile Bigom Taheri,Fahimeh Anbari,Sahba Khosousi Sani,Seyed Mohammad Mirmoezi,Hamid Reza Khalighi 대한치과마취과학회 2022 Journal of Dental Anesthesia and Pain Medicine Vol.22 No.4
Background: Orofacial pain is defined as pain felt in the soft or hard tissues of the head, face, mouth, and neck. Chronic orofacial pain is often challenging to diagnose and difficult to treat. Due to the lack of available information about the prevalence and clinical form of orofacial pain, this study aimed to evaluate the characteristics of chronic orofacial pain in patients presenting at the Department of Oral Medicine of Shahid Beheshti Dental School between 2012 and 2022. Methods: In this retrospective study, we evaluated the files of 121 patients at the Department of Oral and Maxillofacial Diseases of Shahid Beheshti Dental School, which were completed during 2012–2022. We extracted the required information from these files. Results: In total, 121 files were included in the study (30 male, 91 female). The mean age of the patients was 43.68 ± 16.79 years. The most common diagnosis in patients with chronic orofacial pain was temporomandibular disorders (TMD) (55.3%). Among pain-related factors, psychological factors showed the highest frequency (30.5%). Opening and closing (43.8%) had the highest frequency among factors that increased pain, and the rest (6.6%) had the highest frequency among the factors that reduced pain. Most patients experienced unilateral pain over the masseter area. Most patients reported their pain intensity to be greater than 7 in the verbal analog scale (VAS). The most common symptom associated with pain was joint noise (37.1%). Conclusion: A ten-year retrospective evaluation of patient files showed that more than half of the patients with chronic orofacial pain had TMD.
Jamil Jannati,Amin Yazdaninejadi,Daryush Nazarpour 한국전기전자재료학회 2016 Transactions on Electrical and Electronic Material Vol.17 No.6
The current study is dedicated to design a novel coordinated controller to effectively increase power system rotorangle stability. In doing so, the coordinated design of an AVR (automatic voltage regulator), PSS2B, and TCSC (thyristorcontrolled series capacitor)-based POD (power oscillation damping) controller is proposed. Although the recentlyemployed coordination between a CPSS (conventional power system stabilizer) and a TCSC-based POD controller hasbeen shown to improve power system damping characteristics, neglecting the negative impact of existing high-gainAVR on the damping torque by considering its parameters as given values, may reduce the effectiveness of a CPSSPODcontroller. Thus, using a technologically viable stabilizer such as PSS2B rather than the CPSS in a coordinatedscheme with an AVR and POD controller can constitute a well-established design with a structure that as a highpotential to significantly improve the rotor angle stability. The design procedure is formulated as an optimizationproblem in which the ITSE (integral of time multiplied squared error) performance index as an objective function isminimized by employing an IPSO (improved particle swarm optimization) algorithm to tune adjustable parameters. The robustness of the coordinated designs is guaranteed by concurrently considering some operating conditionsin the optimization process. To evaluate the performance of the proposed controllers, eigenvalue analysis and timedomain simulations were performed for different operating points and perturbations simulated on 2A4M (two-areafour-machine) power systems in MATLAB/Simulink. The results reveal that surpassing improvement in damping ofoscillations is achieved in comparison with the CPSS-TCSC coordination.
Jeans-Alfvén instability in quantum dusty magnetoplasmas
Jamil, M.,Rasheed, A.,Amir, M.,Abbas, G.,Jung, Young-Dae Cambridge University Press 2017 Journal of plasma physics Vol.83 No.-
<P>The Jeans instability is examined in quantum dusty magnetoplasmas due to low-frequency magnetosonic perturbations. The fluid model consisting of the momentum balance equation for quantum plasmas, Poisson’s equation for the gravitational potential and Maxwell’s equations for electromagnetic magnetosonic perturbations is solved. The numerical analysis elaborates the significant contribution of magnetic field, electron number density and variable dust mass to the Jeans instability.</P>
Jamil Jannati,Amin Yazdaninejadi,Vahid Talavat 한국전기전자재료학회 2017 Transactions on Electrical and Electronic Material Vol.18 No.2
The increased diversity of different types of energy sources requires moving towards smart distribution networks. This paper proposes a probabilistic DG (distributed generation) units planning model to determine technologytype, capacity and location of DG units while simultaneously allocating ESS (energy storage systems) based on predeterminedcapacities. This problem is studied in a wind integrated power system considering loads, prices and windpower generation uncertainties. A suitable method for DG unit planning will reduce costs and improve reliabilityconcerns. Objective function is a cost function that minimizes DG investment and operational cost, purchased energycosts from upstream networks, the defined cost to reliability index, energy losses and the investment and degradationcosts of ESS. Electrical load is a time variable and the model simulates a typical radial network successfully. Theproposed model was solved using the DICOPT solver under GAMS optimization software.
Quarriable Knowledge Creation Framework from Unstructured Scientific Documents
Jamil Hussain,Muhammad Afzal,Maqbool Hussain,Sungyoung Lee 한국차세대컴퓨팅학회 2021 한국차세대컴퓨팅학회 학술대회 Vol.2021 No.11
Knowledge graphs (KGs) play a pivotal role in modern applications such as decision-making systems, question answering systems, and searching and retrieval systems. However, the automatic construction of a knowledge graph from unstructured text is a challenging task. Moreover, traditional dictionary-, rule-based and supervised machine learning approaches are not reasonably practical due to their dependency on human-expert annotated resources. It is especially true when a knowledge graph is generated from domain-specific information, updated frequently, such as COVID-19 related information resources. This paper uses a pre-trained embedding model (BERT) to create word vectors from COVID-19 research articles. The proposed model is employed at two levels: entity extraction from the text and querying the knowledge stored in KG.