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Field: Astronomy

Finite-Time Output Feedback Tracking Control for Autonomous Underwater Vehicles

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Shihua Li, Xiangyu Wang, Lijun Zhang

Journal: IEEE Journal of Oceanic EngineeringYear: 2014
Citations: 157

<?Pub Dtl=""?> In this paper, the finite-time output feedback trajectory tracking control problem for autonomous underwater vehicles (AUVs) is investigated. The vehicle model is constructed in six degrees of freedom and the vehicle attitude is represented by quaternions to avoid representation singu...

Physical SciencesEngineeringControl and Systems Engineering
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FTIR spectrum analysis to predict the crystalline and amorphous phases of hydroxyapatite: a comparison of vibrational motion to reflection

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Md. Sahadat Hossain, Samina Ahmed

Journal: RSC AdvancesYear: 2023Citations: 153

wavenumbers when the sintering temperature was equal to or exceeded 700 °C. The conventional X-ray diffraction (XRD) technique was also employed to explore the crystalline and amorphous phases of synthesized hydroxyapatites.

Physical SciencesEngineeringBiomedical EngineeringOpen Access
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A Quiet Violence: View from a Bangladesh Village

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Betsy Hartmann, James K. Boyce

Journal: Medical Entomology and ZoologyYear: 1984Citations: 141

Acknowledgements Introduction 1. The Making of a Village 2. Behind Bamboo Walls 3. The Classes 4. Who Works? Who Eats? 5. Interventions

Social SciencesPolitical Science and International RelationsBangladesh Politics, Society, and Development
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Do side-effects reduce compliance to iron supplementation? A study of daily- and weekly-dose regimens in pregnancy.

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S.M. Ziauddin Hyder, Lars Åke Persson, Rajiv Chowdhury, Eva‐Charlotte Ekström

Journal: PubMedYear: 2002Citations: 140

Side-effects of iron supplementation lead to poor compliance. A weekly-dose schedule of iron supplementation rather than a daily-dose regimen has been suggested to produce fewer side-effects, thereby achieving a higher compliance. This study compared side-effects of iron supplementation and their im...

Health SciencesMedicineHematologyOpen Access
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Recent sediment flux to the Ganges-Brahmaputra-Meghna delta system

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Munsur Rahman, Maruf Dustegir, Rezaul Karim, Anisul Haque et al.

Journal: The Science of The Total EnvironmentYear: 2018Citations: 134

The physical sustainability of deltaic environments is very much dependent on the volume of water and sediment coming from upstream and the way these fluxes recirculate within the delta system. Based on several past studies, the combined mean annual sediment load of the Ganges-Brahmaputra-Meghna (GB...

Physical SciencesEarth and Planetary SciencesEarth-Surface Processes
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The 1.28 GHz MeerKAT Galactic Center Mosaic

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Ian Heywood, I. Rammala, F. Camilo, W. D. Cotton et al.

Journal: The Astrophysical JournalYear: 2022Citations: 132

Abstract The inner ∼200 pc region of the Galaxy contains a 4 million M ⊙ supermassive black hole (SMBH), significant quantities of molecular gas, and star formation and cosmic-ray energy densities that are roughly two orders of magnitude higher than the corresponding levels in the Galactic disk. At ...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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A review of primary technologies of thin-film solar cells

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Erteza Tawsif Efaz, M. M. Rhaman, Safayat-Al Imam, Khandaker Lubaba Bashar et al.

Journal: Engineering Research ExpressYear: 2021Citations: 132

Abstract Thin-film solar cells are preferable for their cost-effective nature, least use of material, and an optimistic trend in the rise of efficiency. This paper presents a holistic review regarding 3 major types of thin-film solar cells including cadmium telluride (CdTe), copper indium gallium se...

Physical SciencesEngineeringElectrical and Electronic EngineeringOpen Access
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A Quiet Violence: View from a Bangladesh Village.

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Akbar S. Ahmed, Betsy Hartmann, James K. Boyce

Journal: ManYear: 1984Citations: 130
Social SciencesPolitical Science and International RelationsBangladesh Politics, Society, and Development
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Energy-Efficient UAV Relaying Communications to Serve Ground Nodes

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Shakil Ahmed, Mostafa Zaman Chowdhury, Yeong Min Jang

Journal: IEEE Communications LettersYear: 2020Citations: 127

This letter studies the energy-efficient unmanned aerial vehicle (UAV) communications to support ground nodes (GNs). The system considers the UAV working as a relay while there is a base station (BS) on the ground. We analyze the UAV energy consumption model to design the energy-efficient UAV trajec...

Physical SciencesEngineeringAerospace EngineeringOpen Access
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CHANG-ES. IV. RADIO CONTINUUM EMISSION OF 35 EDGE-ON GALAXIES OBSERVED WITH THE KARL G. JANSKY VERY LARGE ARRAY IN D CONFIGURATION—DATA RELEASE 1

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Theresa Wiegert, Judith Irwin, A. Miskolczi, Philip Schmidt et al.

Journal: The Astronomical JournalYear: 2015Citations: 127

Author: Wiegert, T. et al.; Genre: Journal Article; Issued: 2015-09; Keywords: galaxies: magnetic fields, galaxies: star formation, ISM: magnetic fields, radio continuum: galaxies; Title: CHANG-ES. IV. Radio Continuum Emission of 35 Edge-on Galaxies Observed with the Karl G. Jansky Very Large Array ...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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Arduino and GSM based smart energy meter for advanced metering and billing system

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Md Masudur Rahman, Noor-E-Jannat, Mohd. Ohidul Islam, Md. Serazus Salakin

Year: 2015Citations: 122

Every management system is trying to make automatic, portable and remote control. This work presents a novel smart energy meter for an automatic and superior metering and billing system. The integration of the Arduino and GSM Short Message Service (SMS) provide the meter reading system with some aut...

Physical SciencesEngineeringElectrical and Electronic Engineering
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JADES Data Release 3: NIRSpec/Microshutter Assembly Spectroscopy for 4000 Galaxies in the GOODS Fields

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Francesco D’Eugenio, Alex J. Cameron, Jan Scholtz, Stefano Carniani et al.

Journal: The Astrophysical Journal Supplement SeriesYear: 2025Citations: 118

Abstract We present the third data release of the JWST Advanced Deep Extragalactic Survey (JADES), providing both imaging and spectroscopy in the two GOODS fields. Spectroscopy consists of medium-depth and deep NIRSpec/microshutter assembly spectra of 4000 targets, covering the spectral range 0.6–5....

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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The JWST UNCOVER Treasury Survey: Ultradeep NIRSpec and NIRCam Observations before the Epoch of Reionization

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Rachel Bezanson, Ivo Labbé, Katherine E. Whitaker, Joel Leja et al.

Journal: The Astrophysical JournalYear: 2024Citations: 118

Abstract In this paper we describe the survey design for the Ultradeep NIRSpec and NIRCam Observations before the Epoch of Reionization (UNCOVER) Cycle 1 JWST Treasury program, which executed its early imaging component in 2022 November. The UNCOVER survey includes ultradeep (∼29–30AB) imaging of ∼4...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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Mother and Son Suicide Pact Due to COVID-19-Related Online Learning Issues in Bangladesh: An Unusual Case Report

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Mohammed A. Mamun, Rubaiya Matin Chandrima, Mark D. Griffiths

Journal: International Journal of Mental Health and AddictionYear: 2020Citations: 118

On 11 June 2020, a private university student (aged 22 years) and his mother (aged 47 years) from Bogra, Bangladesh, committed suicide together by ingesting poisonous gas tablets in a forest close to where they both lived (The Daily Campus 2020). The day before the suicides, the student’s father ins...

Social SciencesPsychologyClinical PsychologyOpen Access
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THE JAMES CLERK MAXWELL TELESCOPE NEARBY GALAXIES LEGACY SURVEY. I. STAR-FORMING MOLECULAR GAS IN VIRGO CLUSTER SPIRAL GALAXIES

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C. D. Wilson, B. E. Warren, F. P. Israel, S. Serjeant et al.

Journal: The Astrophysical JournalYear: 2009Citations: 113

We present large-area maps of the CO &lt;i&gt;J&lt;/i&gt; = 3-2 emission obtained at the James Clerk Maxwell Telescope for four spiral galaxies in the Virgo Cluster. We combine these data with published CO &lt;i&gt;J&lt;/i&gt; = 1-0, 24 μm, and Hα images to measure the CO line ratios, molecular gas ...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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