There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

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Electronic Transport In Mesoscopic Systems

Time-Frequency Analysis.

Antenna Theory And Design

The nephrotic syndrome

Strain- and crystal orientation-dependent optical properties of GaSb-based mid-infrared quantum well lasers are numerically studied by solving one-dimension Schrodinger equation. The simulation results demonstrate that there is a strong correlation of peak emission wavelength and optical gain with crystal orientation and strain.

http://ieeexplore.ieee.org/iel5/5361200/5376978/05377076.pdf

Strain and crystal orientation-dependent optical properties of mid-infrared Gasb-based quantum well laser

Here a comparative study is presented on the performances of 3D dual-material triple-gate (DMTG) and single-material triple-gate (SMTG) III-V semiconductors-on-nothing (III-VON) MOSFETs. Different figures of merits of the devices such as surface potential, electric field, threshold voltage, threshold voltage roll-off, subthreshold swing (SS), and drain induced barrier lowering (DIBL) are investigated solving 3D Poisson's equation. The step-like behavior in the surface potential at the gate-metal interface facilitates to decouple the source and channel regions from the drain region for DMTG device structure. Physical parameters (gate length ratio L 1 : L 2 , width w, and thickness, z) dependent performance of both devices are also studied. Moreover, three gates with two different gate materials offer better gate control, reduced DIBL, and a threshold voltage roll-off of the device. So, DMTG structure shows better immunity against different short channel effects (SCEs) compared to SMTG structure and could be a suitable candidate for high-speed logic applications.

Comparative Study on the Performance of 3D DMTG and SMTG III-VON MOSFETs

Genetic gain is a crucial parameter to check the breeding program’s success and help optimize future breeding strategies for enhanced genetic gains. In this work, IRRI’s historical data from the Philippines and Bangladesh of the salinity breeding program was used to estimate the genetic gains and identify the best lines based on higher breeding values for yield as a future genetic resource. Two-stage mixed-model approach accounting for experimental design factors and pedigrees was adopted to obtain the breeding values for yield and estimate genetic trends under the salinity conditions. A positive genetic trend of 0.1% per annum with a yield advantage of 1.52 kg/ha for the Philippines and 0.31% per annum with a yield advantage of 14.02 kg/ha for Bangladesh datasets was observed. For the released varieties, genetic gain was 0.12% per annum with a yield advantage of 2.2 kg/ha/year and 0.14% per annum with a yield advantage of 5.9 kg/ha/year, respectively. Further, based on higher breeding values for grain yield, a core set of the top 145 genotypes with higher breeding values of >2400 kg/ha in the Philippines and >3500 kg/ha in Bangladesh with a selection accuracy >0.4 were selected for formulating the elite breeding panel as a future breeding resource. Conclusively, higher genetic gains are pivotal in IRRI’s rice salinity breeding program, which requires a holistic breeding approach with a major paradigm shift in breeding strategies to enhance genetic gains. Key Message Estimating genetic gains and formulating a future salinity elite breeding panel for rice pave the way for developing better high-yielding salinity tolerant lines with enhanced genetic gains.

/pdf/genetic-gains-in-irris-rice-salinity-breeding-and-elite-2zs4tbns.pdf

Genetic Gains in IRRI’s Rice Salinity Breeding and Elite Panel Development as a Future Breeding Resource

Chipshape-dependent bit error rate (BER) performance of direct sequence optical code division multiple access is analytically studied in fiber optic communication with cascaded in-line optical amplifiers in presence of group velocity dispersion In our analysis, supper-Gaussian, and Hyperbolic-Secant shaped optical orthogonal codes are employed as address sequence Avalanche photodiode is used in an optical correlator receiver for optoelectronic conversion The BER performance is determined as a function of received signal power, number of simultaneous users, and fiber length on account of receiver, optical amplifier, and multiuser access interference noises The numerical results show that the BER performance of the system is highly dependent on the chipshape The power penalty suffered by the system is evaluated at BER of 10−9 It is found that the proposed system suffered minimum penalty when Hyperbolic-Secant shaped chip used instead of supper-Gaussian shaped chip

Impact of chipshape on the performance of DS-OCDMA in dispersive fiber medium

One of the most important measures that developed countries need along with economic success is the provision of contemporary health services for the elderly. Inadequate care for the elderly can put them in danger of falls with serious injury or even death. When an older person falls due to illness, immediate lack of care may lead to death. In this paper, a wearable smart phone sensor fall event detection system is introduced. The proposed system utilizes real-time raw sensory accelerometer, gyroscope and gravity data collected from the AndroSensor App and is then processed and applied to a machine learning classifier. The smart phone is positioned at the waistline to yield the most accurate fall detection results. The system is trained and can detect common activities, like sleeping, walking, sitting, jogging, and events, such as falling in any direction. An full accuracy is almost accomplished using Support Vector Machine classifier in comparison with other classifiers as addressed by other previous research works. Nevertheless, the system requires more validation with elderly people under the supervision of caregivers in a controlled environment. 

Md. Rafiqul Islam

Papers

Strain and crystal orientation-dependent optical properties of mid-infrared Gasb-based quantum well laser

Comparative Study on the Performance of 3D DMTG and SMTG III-VON MOSFETs

Genetic Gains in IRRI’s Rice Salinity Breeding and Elite Panel Development as a Future Breeding Resource

Impact of chipshape on the performance of DS-OCDMA in dispersive fiber medium

Wearable Smart Phone Sensor Fall Detection System