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A Study on the Development of Touchless Mouse by Object Tracking through Webcam

International Journal of Internet and Distributed Systems 2023年第1期5卷 1-17页

作者： Mohammad Alauddin Shamim Ahmed rokshana akter Md. Amanat Ullah Md. Abdul Mannan Department of Computer Science & Engineering Uttara University Dhaka Bangladesh Department of Mathematics Uttara University Dhaka Bangladesh

In this paper, we study the continuous growth of computer technology and the increasing importance of human-computer interaction. Interactive touch-less is now an undergoing developing technology in real life. Touchless technology introduces a new way of interacting with computers by object tracking method. Nowadays most mobile devices are using touchscreen technology. However, this technology is still not cheap enough to be used in desktop systems. Designing a touchless device such as a mouse or keyboard using a webcam and computer vision techniques can be an alternative way of touch screen technology. Recent trends in technology aim to build highly interactive and easy-to-use applications as a replacement for conventional devices. Such a device is touchless mouse. Its development is completed on the MATLAB platform. The overall objective is to apply image processing techniques from video to track the movement of color which is captured by a webcam and that is converted into mouse movements and operations to control the system. The sub-system which is implemented here would allow a person to control his/her mouse without any input other than the marker movements. We use three fingers (with color) as three color markers (red, green, blue) for completing the activities of a mouse. My first goal was to successfully track the marker color and the second goal was to track the marker position from the acquired image frame for performing the mouse operations. The webcam is used to capture the information on the marker and trigger the associated actions. I use ***. Robot file for performing the mouse operations using the acquired data from the image frame.

关键词： MATLAB GUI RGB DIP Matrix

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New insight into the mechanism of DNA polymerase I revealed by single-molecule FRET studies of Klenow fragment

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Chinese Physics B 2022年第8期31卷 705-708页

作者： rokshana Parvin Qi Jia Jianbing Ma Chunhua Xu Ying Lu Fangfu Ye Ming Li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

We use single-molecule FRET and newly-developed D-loop techniques to investigate strand displacement activity of Klenow fragment(exo-)of DNA polymerase I in DNA sequences rich in guanine and cytosine(GC)*** find that there exist in the FRET traces numerous ascending jumps,which are induced by the backsliding of Klenow fragment on DNA *** measurements show that the probability of backsliding is closely related to the GC-richness and d NTP concentration:increasing the GC-richness leads to an increase in the backsliding probability,and increasing the d NTP concentration however leads to a decrease in the backsliding *** results provide a new insight into the mechanism of DNA polymerase I.

关键词： smFRET Klenow fragment GC-richness strand displacement

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Relationship of Circulating High-Density Lipoprotein Cholesterol and Anemia

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Journal of Life Sciences 2013年第5期7卷 459-463页

作者： Md. Aminul Haque Khan rokshana Rabeya Muhammad Saiedullah Rukhsana Parvin Sohel Ahmed Md. Rezwanur Rahman Department of Biochemistry Enam Medical College Dhaka 1340 Bangladesh Biochemistry Laboratory Enam Medical College Hospital Dhaka 1340 Bangladesh Department of Applied Laboratory Sciences Bangladesh University of Health Sciences Dhaka 1216 Bangladesh Department of Medicine Enam Medical College & Hospital Dhaka 1340 Bangladesh Department of Biochemistry & Molecular Biology Jahangirnagar University Dhaka 1342 Bangladesh Department of Biochemistry Delta Medical College Dhaka 1216 Bangladesh

Circulating level of low HDLC （high-density lipoprotein cholesterol） represents a common critical risk factor for IHD （ischemic heart disease） and may further aggravate the condition in anemic subjects, as the presence of anemia itself is a threat to cardiovascular consequences. To investigate the relationship of circulating HDLC with anemia, first we determined the levels of total hemoglobin （Hb） in a total of 301 subjects （male, n = 158; female, n = 143） randomly, and then examined the circulating levels of HDLC in fasting condition. Age of the study subjects was 47.9 ~ 16.6 （mean ＋ SD） years. Both the male and female subjects were divided into three groups according to their levels of Hb. The relationship of circulating levels of HDLC with the levels of total Hb was statistically analyzed. In case of the male subjects, we found that the levels of HDLC differed significantly among the three groups with different levels of Hb （P = 0.0233） and decrease in the levels of HDLC correlated significantly with the gradual decrease of total Hb level （r = 0.2504; P = 0.0015）. In female subjects, we observed a similar trend of difference among the three groups （P = 0.0685）. However, decrease in the levels of HDLC correlated significantly with the gradual decrease of Hb level （r = 0,2199; P = 0.0083）. Altogether, this study demonstrates that decrease in the circulating HDLC is related to the gradual decrease of Hb level. This study also indicates that circulating level of HDLC may be influenced by the level of total Hb and reveals the cardiovascular risks in anemia as well.

关键词： High density lipoprotein cholesterol hemoglobin anemia.

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