Using Mobile Data Collectors to Enhance Energy Efficiency a nd Reliability in Delay Tolerant Wireless Sensor Networks

Yasmine-Derdour, Yasmine-Derdour,Bouabdellah-Kechar, Bouabdellah-Kechar,Faycal-Khelfi, Mohammed Korea Information Processing Society 2016 Journal of information processing systems Vol.12 No.2

A primary task in wireless sensor networks (WSNs) is data collection. The main objective of this task is to collect sensor readings from sensor fields at predetermined sinks using routing protocols without conducting network processing at intermediate nodes, which have been proved as being inefficient in many research studies using a static sink. The major drawback is that sensor nodes near a data sink are prone to dissipate more energy power than those far away due to their role as relay nodes. Recently, novel WSN architectures based on mobile sinks and mobile relay nodes, which are able to move inside the region of a deployed WSN, which has been developed in most research works related to mobile WSN mainly exploit mobility to reduce and balance energy consumption to enhance communication reliability among sensor nodes. Our main purpose in this paper is to propose a solution to the problem of deploying mobile data collectors for alleviating the high traffic load and resulting bottleneck in a sink's vicinity, which are caused by static approaches. For this reason, several WSNs based on mobile elements have been proposed. We studied two key issues in WSN mobility: the impact of the mobile element (sink or relay nodes) and the impact of the mobility model on WSN based on its performance expressed in terms of energy efficiency and reliability. We conducted an extensive set of simulation experiments. The results obtained reveal that the collection approach based on relay nodes and the mobility model based on stochastic perform better.

Basic Study of Mechanical Properties of Artificial Nano Composite Fiber Using Atomic Force Microscopy

R. Yasmin(Rubiya Yasmin),H. M. Seo(서현민),H. K. Kweon(권현규),C. Y. Park(박창용) 한국기계가공학회 2019 한국기계가공학회 춘추계학술대회 논문집 Vol.2019 No.4

Content Based Image Retrieval Using Combined Features of Shape, Color and Relevance Feedback

( Yasmin Mussarat ),( Sharif Muhammad ),( Mohsin Sajjad ),( Irum Isma ) 한국인터넷정보학회 2013 KSII Transactions on Internet and Information Syst Vol.7 No.12

Content based image retrieval is increasingly gaining popularity among image repository systems as images are a big source of digital communication and information sharing. Identification of image content is done through feature extraction which is the key operation for a successful content based image retrieval system. In this paper content based image retrieval system has been developed by adopting a strategy of combining multiple features of shape, color and relevance feedback. Shape is served as a primary operation to identify images whereas color and relevance feedback have been used as supporting features to make the system more efficient and accurate. Shape features are estimated through second derivative, least square polynomial and shapes coding methods. Color is estimated through max-min mean of neighborhood intensities. A new technique has been introduced for relevance feedback without bothering the user.

Benefits of the concomitant use of radiofrequency microneedling and a 1,927 nm fractional thulium laser for treating aging skin and acne scars in Algeria: a retrospective chart review

Yasmine Meliania Rahali 대한의학레이저학회 2023 MEDICAL LASERS Vol.12 No.3

Background: Skin aging is a naturally occurring process. However, patients are often unhappy with the age-related changes in skin appearance such as wrinkles, pigmentation, and laxity. Radiofrequency microneedling and the 1927 thulium laser have both been independently explored extensively for these conditions. However, while the combined use of the two is believed to be both safe and efficacious, the efficacy of the combination remains largely unexplored in clinical trials.Methods: A series of 22 patient cases was reviewed. All patients were treated with a radiofrequency microneedling device followed immediately by a full-face 1927 thulium laser treatment. Treatment cycles were performed every 2 to 3 months and the relevant clinical parameters, side effects, and patient responses were evaluated after each cycle. Patients were asked to return up to 3 months following their final treatment to collect end-of-treatment photographs, which were reviewed as part of this evaluation.Results: All patients reported that they were either satisfied or very satisfied with the treatment. The physician reviews were similar, with a mean satisfaction score of 3.5 out of 4. Blinded evaluators correctly identified the posttreatment image 88.8% of the time. No adverse events other than the expected erythema, edema, and pinpoint bleeding following the radiofrequency microneedle treatment were reported by the patients. Clinically significant improvement was seen in the overall appearance of the tissue, and skin tightening and overall brightening of the treated areas was noted in most patients.Conclusion: Combined use of a radiofrequency microneedling device with a 1927 thulium laser is not only safe but extremely efficacious in the treatment of age-related skin changes. Patients presented with significant clinical benefits in three treatment cycles with minimal impact on their daily activities.

A noble silver nanoflower on nitrogen doped carbon nanotube for enhanced oxygen reduction reaction

Yasmin, Sabina,Shamsuddin Ahmed, Mohammad,Jeon, Seungwon Elsevier 2017 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Vol.42 No.2

<P><B>Abstract</B></P> <P>An electrodeposition-approach for the synthesis of silver nanoflowers (AgNFs) on nitrogen doped carbon nanotubes (NCNTs) for the oxygen reduction reaction (ORR) in alkaline media has been developed. The as prepared material (NCNTs-AgNFs) has been characterized by various instrumental methods. The morphological analysis shows the unique rose-like AgNFs are placed onto the NCNTs with better dispersion. The higher population of AgNFs has also been observed onto NCNTs coated glassy carbon (GC) rather than bare GC plate. The X-ray photoelectron spectroscopy shows chemical reduction and N-doping has done successfully with the restoring sp<SUP>2</SUP> domain in carbon network. The electrocatalytic activities have been verified using cyclic voltammetry (CV) and hydrodynamic voltammetry techniques in 0.1 M KOH electrolyte. The resulting catalyst system, NCNT-AgNFs, surpasses the performance of Pt/C, in terms of a kinetic current density, better fuel selectivity and durability. It is also noteworthy that the NCNT-AgNFs exhibits a four-electron reduction pathway for ORR with lowering H<SUB>2</SUB>O<SUB>2</SUB> yield. The admirable performance of NCNT-AgNFs catalyst along with higher durability holds great potential for application in various fuel cells as cathode catalyst.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Nonprecious metal silver has been used as cathode catalyst instead of Pt in fuel cell. </LI> <LI> Rose like silver nanoflowers have been synthesized on nitrogen doped CNT. </LI> <LI> Around four electron-transfer and less H<SUB>2</SUB>O<SUB>2</SUB> can be obtained by using this catalyst. </LI> <LI> This catalyst shows better anodic fuel tolerance. </LI> <LI> Long term stable than the commercial Pt/C. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Ethics in an Inter-Connected World

( Yasmin Merali ) 한국윤리경영학회(구-한국기업윤리학회) 2004 企業倫理硏究 Vol.8 No.-

Effects of a Low-Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyol Diet on Symptoms of Functional Abdominal Pain in Pediatric Patients

Yasmine Gamal Abdou El Gendy,Mohammad Ashraf Abdel Wahed,Mostafa Hussein Hassan Ragab,Yosra Mohamed Mohsen Awad 대한소아소화기영양학회 2022 Pediatric gastroenterology, hepatology & nutrition Vol.25 No.6

Purpose: Recently, great interest has been focused on dietary fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAPs) for the treatment of functional abdominal pain (FAP). Several meta-analyses, including those on the adult population, have been published, potentiating its role. However, pediatric studies are scarce. We aimed to evaluate the effect of a low-FODMAP diet on the severity of FAP in children. Methods: This clinical trial included 50 patients aged 3–18 years with irritable bowel syndrome and FAP that were not otherwise specified. The patients were instructed to receive a low FODMAP diet guided by a dietitian. The primary outcome was the percentage of responders after 2 months of dietary intervention compared with baseline. Other outcomes included changes in stool consistency and quality of life (QoL) scores using the KIDSCREEN-10 questionnaire, and weight-for-age z-scores. Results: After the dietary intervention, 74% of patients showed more than 30% lower pain intensity, as examined using the Wong-Baker Faces pain rating scale. Their QoL significantly improved, and patients have gained weight. Conclusion: A low FODMAP diet can improve pain intensity and QoL among children with functional abdominal pain, with no detrimental effects on body weight.

Weighted Erlang and Lomax Distributions: Their Properties and Applications to Water Quality Inspection

Yasmin, Talat,Aslam, Muhammad,Hussain, Jaffer,Jun, Chi-Hyuck Korean Institute of Industrial Engineers 2017 Industrial Engineeering & Management Systems Vol.16 No.3

Two new families of weighted Erlang and Lomax probability distributions are developed. Various properties including the moments and the bias in the estimated mean of a weighted distribution are derived. As applications of these distributions, time truncated acceptance sampling plans are designed to obtain the minimum sample size and the acceptance number for un-weighted and weighted distributions, where various pre-assigned producer's and consumer's risks, various ratios of true mean to the specified mean life, and various test termination time multipliers are considered. A real data set is analyzed to illustrate the proposed time-truncated sampling plan.

Biosensors and their Applications in Food Safety: A Review

Yasmin, Jannat,Ahmed, Mohammed Raju,Cho, Byoung-Kwan Korean Society for Agricultural Machinery 2016 바이오시스템공학 Vol.41 No.3

Background: Foodborne pathogens are a growing concern with respect to human illnesses and death. There is an increasing demand for improvements in global food safety. However, it is a challenge to detect and identify these harmful organisms in a rapid, responsive, suitable, and effective way. Results: Rapid developments in biosensor designs have contributed to the detection of foodborne pathogens and other microorganisms. Biosensors can automate this process and have the potential to enable fast analyses that are cost and time-effective. Various biosensor techniques are available that can identify foodborne pathogens and other health hazards. Conclusions: In this review, biosensor technology is briefly discussed, followed by a summary of foodborne pathogen detection using various transduction systems that exhibit specificity for particular foodborne pathogens. In addition, the recent application of biosensor technology to detect pesticides and heavy metals is briefly addressed.

How Do Technical Barriers to Trade Affect Exports? Evidence from Egyptian Firm-Level Data

Yasmine Kamal,Chahir Zaki 세종대학교 경제통합연구소 2018 Journal of Economic Integration Vol.33 No.4

The paper examines the impact of Technical Barriers to Trade on firms’ exports in Egypt over the period 2005~2011. Firm-level data for Egypt are combined with the WTO’s TBT-specific trade concerns database. Employing a variant of a gravity model with highdimensional fixed effects, the impact of Technical Barriers to Trade on firms’ intensive and extensive margins, and exit and entry probabilities is estimated, as well as impacts on product and market diversification. Regressions examine the heterogeneous effect of Technical Barriers to Trade by firm size. Results indicate an insignificant effect of Technical Barriers to Trade on firms’ intensive margin. On the other hand, the extensive margin and entry probability are negatively affected by Technical Barriers to Trade, whereas exit probability is positively affected. Accordingly, Technical Barriers to Trade mainly induce an increase in the fixed costs of exporting. Importantly, smaller firms are more adversely affected by Technical Barriers to Trade in their export participation and entry and exit decisions. The effect of Technical Barriers to Trade on firms’ product diversification is found to be sector-dependent:positive for agricultural sectors and mixed for non-agricultural ones. Finally, firms generally tend to increase their market diversification in response to Technical Barriers to Trade. This is especially true for large firms within their set of African and Asian destination markets. By contrast, there are lower prospects of firm diversification into less stringent destinations within the European region.