Investigating the Relationship between Different Dimensions of Social Problem Solving and Problem-Focused Coping Styles

This study investigates the relationship between Different dimensions of social problem solving (Avoidance problem style, rational problem style, impulsive problem style, positive problem orientation, negative problem orientation) and problem-focused coping styles for educational stress in female and male master day students at state universities of Tehran. According to the correlation coefficients of problem-focused coping style at the error level of 5% in both female and male students, it is found that there is a significant relationship between the problem-focused coping style for stress and rational problem solving style in both male and female students and this relationship is stronger in male students. Furthermore, there is a significant relationship between the problem-focused coping style for stress and Positive Problem Solving Orientation in both male and female students and this relationship is stronger in male students. The results of this study indicate that the problem-focused style is the dominant approach among the students in coping with stress, thus the use of effective coping styles, which include the problem-focused coping style, helps the individual to overcome the stressful source and its symptoms

A Hybrid Method with RDTM for Solving the Biological Population Model

In this paper, we establish an analytical solution to the non-linear biological population model using a hybrid method that combines a reduced differential transform method with a resummation method based on Yang transform and a Padé approximant. The proposed method significantly improves the approximate solution series and broadens the convergence field, It is also dependent on a few straightforward steps, and does not depend on a perturbation parameter or produce secular terms. Three examples are given to test the effectiveness, accuracy, and performance of the suggested method. The results and graph demonstrate that the suggested method is successful and more accurate than other methods. In addition, PYRDTM is a useful tool with great potential for solving nonlinear BPM. Keywords: Biological population model, Yang transform, RDTM, Padé approximation, accuracy. DOI: 10.7176/MTM/12-2-01 Publication date:September 30th 2022

Highly sensitive fiber-optic temperature sensor based on tapered no-core fiber for biomedical and biomechanical applications

A low-cost, easy to fabricate real-time temperature sensation device built on an In-Line Mach–Zehnder interferometer basis was manufactured by fusing a segment of no-core fiber amongst two fibers of single-mode. Two different structures, tapered no-core fiber, and untapered no-core fiber both retaining acrylate polymer coating were investigated. The 3 cm length tapered no-core fiber sensor showed the highest sensitivities of ∼ −1.943 nm ◦C−1 and ∼ −1.954 nm ◦C−1 for two different dips respectively. The sensor exhibited high linearity with a very good resolution of 0.0102 ◦C. making the most of the high coefficient of thermal expansion, thermo-optic properties of the acrylate polymer, and the tapering effect, the sensor could be utilized in many temperatures observing applications like biochemical labs, biomechanical studies, and bio-sensing analyses

Chemical Antibacterial Agents Used to Disinfect Cultivation Tools against the Crown Gall Disease of Stone Fruits

Several chemicals were tested and evaluated as antibacterial agents against the Palestinian isolate of Agrobacterium tumefaciens, the causal agent of the crown gall disease. Based on the disk diffusion method on nutrient agar, formaldehyde appeared to be the strongest followed by sulfuric acid, hydrochloric acid, sodium hydroxide, Hypex and Dettol. On the other hand, those chemicals revealed 90-100% inhibition against the bacterial cell contaminating common pins.  The other chemicals showed either an intermediate or weak bacterial inhibition of the bacterium on agar nutrient media. Keywords: Agrobacterium tumefaciens, Crown gall, Antibacterial disinfectants, Palestin

Classroom acoustic measurements and audiological screening of year 1 school children

Bunyi bising dikaitkan dengan kemerosotan kualiti hidup dengan mengganggu percakapan, mempercepatkan dan meningkatkan perkembangan sikap sosial negatif seperti meragam dan neurosis, dan juga gangguan penumpuan dan seterusnya prestasi dan produktiviti. Dalam kelas, persepsi bunyi dikaburi oleh ambien bunyi bising dan gema(reveberation). Gema berlebihan dan ambien bunyi bising mempunyai kesan negatif yang jelas terhadap persepsi percakapan melalui bunyi yang dicemar (smearing) atau penopengan (masking). Walaupun kehilangan pendengaran adalah perkara biasa dan ketidakupayaan yang biasa berlaku yang mengganggu prestasi pembelajaran kanak-kanak yang bersekolah dalam negara membangun, kanak-kanak dalam era persekolahan jarang disaring pendengaran mereka sewaktu pemeriksaan klinikal rutin, dan pihak berkuasa bidang kesihatan tidak menumpukan sepenuh perhatian terhadap penilaian audiometrik terutamanya di sekolah rendah. Noise is connected to a deteriorating quality of life, by interfering with speech, by accelerating and escalating the development of negative social behaviors such as irritability and neurosis, as well as interferes with attention and consequently performance and productivity. In classrooms the sound perception is obscured by ambient noise and reverberation. Excessive reverberation and ambient noise have a marked negative effect on speech perception by smearing or masking sound. While hearing loss is a common and considerable disability that harms educational performance of school children in developing countries unfortunately, school-aged children are rarely screened for hearing loss during routine clinical examination, and health authorities pay little attention to audiometric evaluation particularly in primary schools

New Cryptanalysis and Modelling for Wireless Networking

High data rates and interoperability of vender devices have made WiMAX a prime desire for use worldwide. WiMAX is based on the IEEE 802.16 standard. IEEE 802.16a, b, c & d versions were updated within three years of the first launch of WiMAX. However, during those early years reports were published that highlighted the security weaknesses of the standard. These weaknesses prompted the IEEE to issue a new version, 802.16e to tackle the security issues. Despite this security enhancement, WiMAX remains vulnerable. This research project looks at the vulnerability of WiMAX 802.16e Subscriber Station/Mobile Station authentication at the initial entry and proposes approaches to the prevention of Denial of Service (DoS) attacks at this point in order to secure the Media Access Control (MAC) layer from such threats. A new protocol has been designed and developed to provide confidentiality, authentication and integrity to WiMAX users. This new protocol is integrated with Z algorithm (an algorithm described later in this paper) to provide: Confidentiality of management messages Message Authentication code ID to provide for message integrity and user authentication. A simulation package was also required, to prove that a linear load of DoS attack would disable or exhaust the capacity of the base station of a WiMAX network, as well as providing other simulation functions. The freely available simulation tool NIST (NIST IPSec (Internet Protocol Security) and IKE (Internet Key Exchange) Simulation) is oriented towards fixed network communications (NIIST, 2003). There are no other relevant simulation tools; hence the purpose of this research project is to develop a new tool to simulate WiMAX security vulnerabilities and test the new protocol

Evaluation of micronucleus frequency by acridine orange fluorescent staining in bucccal epithelial cells of oral submucosus fibrosis (OSMF) patients

Oral submucosus fibrosis (OSMF) is a collagen-related disorder seen in habitual betel quids and smokers. This is a high risk precancerous condition in which the connective tissue fibers of the lamina propria and deeper parts of the mucosa becomes stiff with restricted mouth opening. Patients with severe cases have symptoms like difficulties in chewing, swallowing and speaking. In the present study 25 individuals were gutkha chewers and 25 were OSMF patients (chewing gutkha along with smoking) and 25 individuals were taken as controls. A significant increase in the frequency of micronuclei was observed in OSMF patients (34.4 ±1.79) as compared to gutkha chewers (14.4± 0.73) and controls (4.36± 0.27). The number of micronucleated cells in OSMF, gutkha chewers and control groups were 19.84± 0.69, 12.6 ± 0.51 and 4.20 ±0.27, respectively and are significantly different at p< 0.05. Acridine orange is used due its fluorescence nature and easier visibility of the micronucleus present in the buccal epithelial cells. It is concluded that chewing gutkha along with smoking is more dangerous for human health as it hastens the incidence of OSMF.Keywords: Oral submucosus fibrosis; Gutkha; Smoking; MicronucleusThe Egyptian Journal of Medical Human Genetics (2013) 14, 189–19