669 research outputs found
LML-Learning Meta-Learning Dataset_update version
No full textThe LML dataset presented in this paper contains both categorical and continuous data for 7 meta-learning parameters: age, gender, degree of illusion of competence, sleep duration, chronotype, experience of imposter phenomenon and multiple intelligence. Convenience sampling and simple random sampling method are used to structure the volunteered anonymous online survey data collection project for LML dataset creation. Survey questionnaires are set to explore adult learners' (age over 18) meta-learning parameters. The responses from the 54 survey questionnaires contains raw data from 1021 current university students from 11 universities of Bangladesh.
Mean and standard deviation for the participant's baseline attributes are given for scale parameters, and frequency and percentage are calculated for categorical parameters. Academic curriculum, courses as well as professional training materials can be reviewed and re-designed with focusing on the diversity of learners. How the designed courses will be learned by learners along with how they will be taught is a significant point for education in any discipline. As the survey questionnaires are set for adult learners and only current university students have participated in this survey, this dataset is appropriate for study andragogy and heutagogy but pedagogy.
Ethics statements Ethical approval (Involvement of Human Subjects) were obtained from the Biosafety, Biosecurity and Ethical Clearance Committee, Jahangirnagar University (reference no. is BBEC,JU/M 2022/01 (18)). The dataset presented in this article is open for public access. It is mandatory to follow the correct citation guidelines when using this LML dataset.
Credit author statement Sonia Corraya: Conceptualization, Methodology, Data curation, Visualization, Writing – original draft; Professor Shamim Al Mamun: Supervision; Professor M. Shamim Kaiser: Supervision.
This dataset belongs to Authors, Institute of Information Technology, Jahangirnagar University, savar, Dhaka-1342, Bangladesh
Market research in fast food restaurant sector
No full textThis is a research based thesis which focuses on market research in fast food restaurants. The main purpose of this research is to understand customer’s expectations in terms of services, menu items, and related ethical aspects. Another objective of this thesis is to evaluate the challenges for a startup restaurant based on market analysis of existing fast food market in capital region of Finland.
The detailed study of different market research methods was performed to develop the market research methodology suitable for the fast food restaurant business. After thoroughly studying different market research methods, the research was divided into two levels: micro and macro. The micro level market research focused on the factors which can be controlled by the entrepreneur, while the macro level market research focused on the factors which cannot be controlled by the entrepreneur.
For micro level market research, qualitative research approach was used to understand the factors which can help to attract the customers in fast food business. The non-participant observation method was employed to rate and record customer satisfaction for this purpose. This observation was performed in international fast food chain located in capital region of Finland. For macro level market research, quantitative and qualitative research approaches were used to understand the challenges for a startup restaurant. The PESTEL and Porter’s Five Forces analysis tools were used in this case.
Market research results are quite encouraging for restaurant business in Finland during the past few years. The analysis of these results confirms that opening a fast food restaurant in the capital of Finland has good chance of success. The author recommends to include hamburgers in the menu and allow the customers to see the preparation process and customize the ingredients according personal choices
An Additively Manufactured 3D Antenna-in-Package with Quasi-Isotropic Radiation for Marine Animals Monitoring System
No full textA low-cost and additively manufactured 3D Antenna-in-Package (AiP) with quasi-isotropic radiation is proposed for a marine animals monitoring system. The antenna is based on a meandered dipole folded as a split ring resonator (SRR) structure, which can generate simultaneously a pair of orthogonal electric and magnetic dipoles, thus providing a quasi-isotropic radiation pattern. The antenna (integrated with a balun) has been inkjet-printed on a 3D-printed buoyant cone structure, which acts also as the system package to house the electronics and the battery. The antenna designed at 2.4 GHz is electrically small, with a ka = 0.49, and has a bandwidth of 70 MHz (2.9%). The measured gain deviation of the antenna (maximum to minimum) is near 3 dB in bandwidth, thus qualifying it as a quasi-isotropic antenna. Field tests of the antenna in the active state (integrated with the electronics) confirm a reliable communication range of 240 m in any direction in the azimuthal plane.This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research(OSR) under Award No. Sensor Innovation Initiative OSR-2015-Sensors-2707. Hanguang Liao, QingLe Zhang, Yen-Hung Kuo, Nidhi Mishra and Atif Shamim are with the Department of Electrical Engineering, King Abdullah University of Science and Technology(KAUST), Thuwal 23955-6900, Saudi Arabia (e-mail: [email protected], [email protected])
RETRACTION: Optimization of conditions for the biological treatment of textile dyes using isolated soil bacteria
No full textThe article titled “Optimization of conditions for the biological treatment of textile dyes using isolated soil bacteria” ([version 1; referees: peer review discontinued]. F1000Research 2018, 7:351 https://doi.org/10.12688/f1000research.13757.1) by Shafkat Shamim Rahman and colleagues, has been retracted by F1000Research on grounds of misconduct by the first author. Following publication of the article, the editorial team at F1000Research were notified by Romana Siddique, from BRAC University, that the data presented in this paper significantly overlaps with the data in her recently published article : Siddique and Alif; ARRB, 22(5): 1-12, 2018; Article no.ARRB.38637; https://doi.org/10.9734/ARRB/2018/38637. In response to our queries to the authors, the second and last author listed on this article, Fahim Ahmed Alif and M. Mahboob Hossain, have stated that they were not aware of the submission of this article to F1000Research, and did not agree to be authors. We have evidence which confirms their statement. After further investigation by the F1000Research team, and a separate investigation by BRAC University, it has become clear that Shafkat Shamim Rahman was not involved with the research presented in this paper, and that the decision to submit and publish the article was taken independently by him, and not his listed co-authors. BRAC University has confirmed that Shafkat Shamim Rahman is not currently based at their institution.</ns4:p
Miniaturized, low power, wireless transmitter and receiver with on-chip antenna, and wireless coupling of on-chip and off-chip antenna
No full textA miniaturized, low power RF transmitter with a dual mode active on-chip antenna/inductor is disclosed in which antenna also serves as the oscillator inductor. Also disclosed is a miniaturized low power RF receiver with an on-chip antenna; and a RF transmitter system wherein an on-chip antenna is wirelessly coupled to an off chip patch antenna are disclosed. Advantageously, the TX chip is housed in a low loss, e.g. Low Temperature Co-fired Ceramic (LTCC) package with a patch antenna to provide a System-on-Package implementation comprising electromagnetic coupling between a RF TX chip comprising an integrated on-chip antenna and a package antenna. The on-chip antenna feeds the LTCC patch antenna through aperture coupling, thus negating the need for RF buffer amplifiers, matching elements, baluns, bond wires and package transmission lines, and significantly increases the gain and range of the module with respect to the on-chip antenna alone, without deterioration of the circuit performance and power consumption. Exemplary embodiments are disclosed which may be fabricated using standard CMOS technology, for operation in the 5 GHz U-NII band for applications such as miniaturized, low cost, low power wireless devices and sensor systems.Granted Paten
NRSC 2020 Tutorial
No full textWith the advent of wearable sensors and internet of things (IoT), there is a new focus on electronics which can be bent so that they can be worn or mounted on non-planar objects. Due to large volume (billions of devices), there is a requirement that the cost is extremely low, to the extent that they become disposable. The flexible and low-cost aspects can be addressed through additive manufacturing technologies such as inkjet, screen and 3D printing. This talk introduces additive manufacturing as an emerging technique to realize low cost, flexible, wearable antennas and sensors for IoT applications. The ability to print electronics on unconventional mediums such as plastics, papers, and textiles has opened up a plethora of new applications. In this talk, various innovative antenna and sensor designs will be shown that have been realized through additive manufacturing. A multilayer process will be presented where dielectrics are also printed in addition to the metallic parts, thus demonstrating fully printed components. Many new functional inks and their use in tunable and reconfigurable RF components will be shown. In the end, many system level examples will be shown, primarily for wireless sensing applications. The promising results of these designs indicate that the day when electronics can be printed like newspapers and magazines through roll-to-roll and reelto-reel printing is not far away
Pemphigus vulgaris in oral cavity: A case report
No full textPemphigus vulgaris is an autoimmune disease that produces intraepithelial blisters in the skin and the oral mucosa. The
oral mucosa is often the first site to be affected by the disease. Initial lesions could appear in the oral cavity in the form
of vesicles, bullae and ulcers. Dentists have a major role in the recognition and diagnosis of this disease. A case of oral
pemphigus vulgaris is presented with special emphasis on diagnostic modalities.Corresponding Author:
Dr. Shamim Thorakkal, Department of Oral Pathology & Microbiology, Government Dental College, Calicut-673008, India.
Email: [email protected]
Representations of South African Indian women in Farida Karodia's Daughters of the twilight and Shamim Sarif's The world unseen.
No full textThesis (M.A.)-University of Natal, Durban, 2003.In this article I examine the representations of South African Indian women in Farida
Karodia's Daughters of the Twilight and Shamim Sarif's the world unseen. My contention
is that each author chooses a different mode of representation and that certain features
of these representations suggest both the different relationship each author has with
South Africa and the differences in the times of production of the novels. Thus while both
novels are set in the 1950s, Karodia, whose site of enunciation is the 'interregnum' in the
1980s, imagines the agency of her women quite differently from Sarif, who writes from a
'post-anti-apartheid' site of enunciation in the late 1990s. I analyse and compare the
relationships between characters (men and women; women and women) and look at the
cultural and political significance of mixed-race figures, concentrating on uncovering the
mechanisms of power and their effects. I read these against a politico-historical context
of the setting and that of the times and places of production
Design and Characterization of 28 THz Rectenna for Infrared Energy Harvesting
No full textThe increasing energy demands of the world’s population and the quickly diminishing fossil fuel reserves together suggest the urgent need to secure long-lasting alternative and renewable energy resources. Infrared (IR) energy harvesting from waste heat can be a promising contribution for sustainable energy. In this talk, we will present a THz antenna integrated with rectifier (rectenna) for harvesting IR energy. The implementation of rectennas for energy harvesting at IR frequencies has remained an elusive research area due to the limitations of nano-scale fabrication and the inability to implement rectifiers that could handle electromagnetic (EM) radiation oscillating a trillion times per second. We will present the design of a resonant bowtie nanoantenna that has been optimized to produce highly enhanced localized fields at the bow tip. The phenomena of plasmon oscillation and hot spot creation at the feed point of the nano-antenna as a result of incident IR energy have been studied through EM simulations and Electron Energy Loss Spectroscopy (EELS). For the rectifier to function at THz frequencies, Metal-Insulator-Metal (MIM) diode has been realized because of its fast response time. To benefit from the field enhancement in the nano-gap, the diode is realized between the overlapped antenna’s arms using a 0.7 nm copper oxide. The thin film diode offers low zero bias resistance of 500 Ω, thus improving the impedance matching with the antenna. In addition, the rectenna prototype demonstrates high zero bias responsivity (4 A/W), which is critical in producing DC current directly from THz signals without the application of an external electric source, particularly for energy harvesting applications. Finally, a new concept of geometric diode will be presented which can also work for THz frequencies
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