262 research outputs found
“Assistance is from you, if you do good deeds” (Devoted to the creative work of Habibullah Kerem (1848 – 1913))
No full textThe article deals with the work of one of little-known authors of the Crimean Tatar literature of the late 19th century and early 20th Habibullah Kerem. Based on manuscripts, kept today in the archives of St.Petersburg, as well as rare sources related to the events of the time, the article describes a brief biography in comparative terms analyzing the poetic legacy of the author
Finite-State Predictive Current Control of a Simplified Three-Level Neutral-Point Clamped Inverter
No full textThis thesis is submitted to the Department of Electrical and Electronic Engineering, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Electrical and Electronic Engineering, November 2019.Cataloged from PDF Version of Thesis.Includes bibliographical references (pages 66-72).Multilevel inverter is one of the most important parts in renewable energy based power generating section as well as in motor drive applications. The quality of an inverter system depends on current total harmonic distortion (THD), switching loss, fault tolerant ability, dynamic responses, voltage stress, common mode voltage etc. Multilevel inverter yields low current THD, less voltage stress across the semiconductor switches and low switching frequency and thus less switching loss. However, using more number of semiconductor devices and neutral point voltage variation are the common problems for a neutral point clamped inverter. This is why different topologies of multilevel inverter are available in the literature in order to solve the aforementioned problems. The control scheme of a multilevel inverter also plays an important role to guarantee system’s performance. Recently, model predictive control (MPC) draws much attention to the researchers for its intuitive features and easy handling of nonlinearities of a system. The controller uses system model to predict the future behavior of the system over a prediction horizon. The control objectives are met by minimizing a predefined cost function that represents the expected behavior of the system. The objective of the proposed research work is to control the output load current of a three level simplified NPC (3L-SNPC) inverter topology using MPC. The simplified NPC inverter is considered, because less number of semiconductor devices used in the topology, even though further investigation is required on different factors such as voltage stress, common mode voltage, losses and switching frequency. MPC is used as controller because it can handle the dc link capacitors voltages balancing problem in a very intuitive way. Moreover, the average switching frequency reduction and over current protection can be easily implemented. Simulation results show that the proposed 3L-SNPC yields similar current THD, transient and steady state responses, voltage stress on the switches at the load side and over current protection capability as the conventional diode clamped based NPC inverter system. The two dc-link capacitor voltages are balanced properly with a neutral point voltage variation of close to zero. However, in comparison with the conventional NPC inverter, the proposed system is 15.25% computationally expensive which yields long execution time and thus less sampling frequency. In this study, two simplified MPC strategies are proposed for the 3L-SNPC inverter system in order to reduce the computational burden: single voltage vector prediction based MPC and selective voltage vector prediction based MPC. Both simplified strategies yield similar performance as the conventional MPC. The required execution times for the simplified MPC strategies are tested on hardware dSPACE 1104 platform. It is found that the single voltage vector prediction based MPC and the selective voltage vector prediction based MPC are computationally efficient by 8.28% and 62.9%, respectively, in comparison with the conventional MPC strategy. However, the average switching frequency and the overall loss in the proposed 3L-SNPC inverter are higher by 83.33% and 46.3%, respectively, than the conventional NPC inverter for a specified load current.Md. TariquzzamanMaster of Science in Electrical and Electronic Engineerin
Data Set for Using an Internal Body Residue Approach to Assess Acute Pesticide Toxicity in Juvenile Chinook Salmon (Oncorhynchus tshawytscha)
No full textThis spreadsheet is a compilation of the data sets corresponding to the following manuscript: Using an internal body residue approach to assess acute pesticide toxicity in juvenile Chinook salmon (Oncorhynchus tshawytscha), Kara E. Huff Hartz, Katie J. Knaub, Md. Habibullah-Al-Mamun, Richard E. Connon, Greg W. Whitledge, Amélie Segarra, Michael J. Lydy published in Environmental Pollution, 2024, 1 April 2024,12336
Contemporary Islamic gardens and cultural identity: Three case studies from North America and Europe
No full textThis dissertation explores the development of Islamic gardens as a global phenomenon in the contemporary world. I argue that Islamic gardens are not restricted to particular locations, cultures, or environments; instead, they can be adapted in different parts of the world, including in places that are not primarily Muslim. To demonstrate this expansion, three contemporary Islamic gardens located in Europe and North America are examined through site observation, interviews, and a review of primary and secondary sources. These cases are the Mughal Garden in Bradford, UK; the Bakewell Ottoman Garden in St. Louis, US; and the Aga Khan Park in Toronto, Canada. In particular, the case studies are intended to demonstrate the role of the designers and patrons in constructing the identity of Islamic gardens in North America and Europe.
An in-depth examination of the case studies shows the effect of globalization, tourism, and the flow of people in the creation of Islamic parks and gardens in the Western context. In forming this identity, the designers deliberately connected their design, both physically and conceptually, to the past by using various interpretation techniques. However, the transposition of the Islamic garden to a global context has required certain negotiations with local cultural, geographical, and climatic conditions to produce a meaningful experience and prevent cultural alienation. These adaptations reveal the flexibility of Islamic gardens as forms and concepts.
Most previous literature on Islamic gardens has focused on the pre-modern period, with limited attention devoted to the nineteenth century or beyond. However, this dissertation extends this historical framework of Islamic gardens to the contemporary period and its defined Islamic geographical boundaries into a global context, while also addressing critical questions about their meaning and identity up to the twenty-first century.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-05-01The student, Amir Habibullah, accepted the attached license on 2020-05-03 at 22:51.The student, Amir Habibullah, submitted this Dissertation for approval on 2020-05-03 at 23:11.This Dissertation was approved for publication on 2020-05-04 at 13:24.DSpace SAF Submission Ingestion Package generated from Vireo submission #15181 on 2020-08-25 at 17:42:40Made available in DSpace on 2020-08-27T00:50:17Z (GMT). No. of bitstreams: 7
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Data set for bifenthrin sublethal toxicity in Juvenile Chinook Salmon (Oncorhynchus tshawytscha)
No full textThis spreadsheet is a compilation of the data sets corresponding to the following manuscripts: 1) Sub-lethal exposures to bifenthrin impact stress responses and behavior of juvenile Chinook Salmon; L. Cominassi, A. Segarra, A. Chandler, M. Habibullah-Al-Mamun, K. Knaub, K.E. Huff Hartz, F. Mauduit, N. Fangue, G.W. Whitledge, M.J. Lydy, R.E. Connon; 2025, Environmental Toxicology and Chemistry, 44(4) 973-983; 2) Development of a Response Spectrum Model for Bifenthrin in Juvenile Chinook Salmon (Oncorhynchus tshawytscha); K. Knaub, Md. H. Al-Mamun, K. E. Huff Hartz, Gregory Whitledge, L. Cominassi, A. Chandler, M. Arkles, J. Reeve, A. Segarra, R. E. Connon, M. J. Lydy,2025, Environmental Pollution, 372, 12607
Simplified Finite-State Predictive Torque Control Strategies for Induction Motor Drives
No full textThis thesis develops a simplified finite-state predictive torque control (FS-PTC) algorithm based on selected prediction vectors (SPVs). This reduces the number of voltage vectors required to be predicted and the objectives to be controlled. The sign of torque or stator flux deviation and the position of stator flux are used to select the prediction vectors. The proposed SPVs strategy also assists reducing the average switching frequency for a two-level voltage source inverter fed induction motor (IM) drive. As a result, the cost function is simplified, as the frequency term is not required. The proposed SPVs based FS-PTC is also applied to a three-level neutral-point clamped inverter driven IM drive. Using the SPVs strategy reduces the computational burden for the proposed three-level inverter fed drive without affecting the system performance. However, an appropriate weighting factor is required for torque and flux errors in the cost function. This leads to the development of a second simplified FS-PTC which does not require complex torque calculations in the prediction loop and hence tuning effort on the weighting factor. A new reference stator flux vector calculator (RSFVC) with an inner proportional-integral torque regulator is employed to convert the torque and flux amplitude references into an equivalent stator flux reference vector. This stator flux reference is used in the cost function for the flux error calculation. The required processing power for the RSFVC-based FS-PTC is further reduced by combining it with the SPVs strategy. Finally, a speed-sensorless simplified FS-PTC of IM supplied from a 3L-NPC inverter is proposed. The sensorless simplified FS-PTC yields improved torque, flux and speed responses, especially at low-speed. The proposed simplified FS-PTC strategies in terms of computational efficiency, cost function design, torque and flux responses, robustness and average switching frequency are validated through experimental results
Topological Tropology of V.S. Naipaul’s Islamic Travelogues and Daniel Pipes’ Islamic History: Ahistorical Historicism
No full textNobel laureate V. S. Naipaul’s (1932-2018) first Islamic travelogue Among the Believers: An Islamic Journey (1981) contains his experience of a visit from August 1979 to February 1980 to the four non-Arab Muslim-majority countries – Iran, Pakistan, Malaysia, and Indonesia. Similarly, his last Islamic travelogue Beyond Belief: Islamic Excursions among the Converted Peoples (1998) has a description of another visit to the same countries for five-month in 1995. Concurrently, Daniel Pipes (1949-), an American historian, published his doctoral dissertation, Slave Soldiers and Islam: The Genesis of a Military System (1981), which represents Islamic culture as the first instigator of military slavery in the world. Then, he wrote an analysis of modern Islamic history In the Path of God: Islam and Political Power (1983), which historicizes Islam as a politically failed force all over the world. These travelogues and history are generically different. But a common topological relationality can be mapped in the anecdotes of Naipaul’s travelogues and the historiography of Pipes’ history, as they use identical tropological configurations to historicize Islamic cultures. This similar tropological historiography, this article argues, is covertly an offshoot of the contemporary spatiotemporal context in which they were produced. The context was networked by certain ideological implications, ethnocentrism, and some cultural misapprehensions regarding Islamic/Muslim culture, making the historicism of both Naipaul and Pipes seem ahistorical
EFFECTS OF PHOSPHORUS AND ZINC ON THE GROWTH, YIELD AND YIELD CONTRIBUTING CHARACTERS OF MUNGBEAN (BARI Mung-6)
No full textSubmitted to the Department of Soil Science,
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree
of
MASTER OF SCIENCE (M.S.)
IN
SOIL SCIENCE
Semester: July-December 2012A field experiment was conducted at the Sher-e-Bangla Agricultural University Farm, Dhaka
1207, during the khari I' season of 2012 to study the" Effects of Phosphorus and Zinc on the
growth, yield and yield contributing characters of Mungbean (BAR! Mung-6)". The
experimental soil was loam in texture having pF! 5.71 and organic carbon content was 0.68%.
Four levels of phosphorus (0, 15, 20 and 25 kg P ha") and three levels of zinc (0, 1.5 and 3.0
kg Zn ha") were used in the study. Levels of these two nutrient elements made 12 treatment
combinations. The experiment was carried out in Randomized complete block design
(RCBD) with three replications. The results revealed that seed and stover yield of mungbean
increased with increasing levels of phosphorus and zinc up to certain level. Inease of P the
maximum significant seed yield (1.5 t hi') and stover yield (2.47 t ha") were obtained with
(25 kg P ha") and the minimum significant seed yield (1.11 t ha
1
) and stover
yield (2.06 t ha)
were obtained with the treatment P
0
(0 kg P ha"). Incase of Zn the
the treatment
p3
maximum significant seed yield (1.45 t ha") and stover yield (2.42 t ha") were obtained with
the treatment Zn
2
(3 kg Zn ha") and the mhimuni significant seed yield (1.27 t ha") and
stover yield (2.21 t ha") were obtained with the treatment Zn0 (0 kg Zn ha"'). The maximum
significant plant height (52.05 cm). number of branch plant" (2.87), seed yield (1.68 t ha"),
yield contributing factors like number of pods plant" (20.86), number of seeds pod" (12.65)
and weight of 1000-seeds (45.11 g) were obtained with the treatment combination P
2Zn 2 (20
kg P ha
-1
± 3 kg Zn ha"). On the other hand minimum seed and stover yields were obtained
with P0Zn9
(No P and No Zn) treatment combination. The N, P. K and S concentration of
(20 kg P ha" + 3 kg Zn ha")
treatment combination and again decreased with increasing phosphorus more than 20 kg P
mungbean plant increased significantly from control to P2Zn
2
S status of
postharvest soil significantly
PERSEPSI SISWA SMP 3 BATUSANGKAR TERHADAP FILM PENGKHIANATAN G-30S/PKI
No full textThis study aims to determine the students' perception of SMP 3 Batusangkar on the film betrayal of G30S/PKI. The type of research that the author uses is descriptive qualitative research. The data collection technique that the author uses is through observation, documentation and interviews. The betrayal of G30S/PKI is a documentary type of film. The film G30S/PKI is very good for the general public to watch, because this film tells the history of Indonesia during the coup carried out by the PKI. But this film contains many violent scenes. Second: The value of the struggle in the G30S/PKI film is very meaningful and worthy of our example. In this film, we can see the struggle in overcoming the betrayal of the G30S/PKI. We as the younger generation must also know the history of Indonesia and there are many positive things that we should emulate from Indonesian heroes
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