Pub Date : 2022-01-01DOI: 10.24271/psr.2022.335494.1126
Ari A. Yatem
Supernova remnants (SNRs) are remarkable astronomical objects which are a diffuse, an expanding nebula of gas that is a direct result of a star's explosive death, resulting in a supernova explosion. SNRs play a vital role in the scattering of tough elements which are made in the supernova explosion into the interstellar medium and provide much amount of energy that heats the ISM, as well as its responsible for enormous differences in physical process and properties. In the present work, we study the physical properties, performance, and behavior of dynamical growth of several types (SNR Ia and II) specifically after an explosion of a supernova, and explore how the density of the interstellar environment affects the physical properties and eternity of each SNRs. To achieve such goals, we have utilized the method known as Counting Pixels Method, which has been applied to the SNRs images as well as a new pattern that has been suggested to calculate some of the physical properties such as the expansion velocity and the radius of the chosen remnants, which are based on the age of SNRs and the density of the surrounding medium. The outcomes of the study have depicted that each chosen SNRs type Ia and II likewise in performance and behavior after a long period of explosion Nevertheless, they are displaced either upwards or downwards based on the interstellar density. However, we noted that SNRs are exploded in the lower density environment and expanded without restriction to make a regular shape. We have concluded that further study is required particularly on the physical properties of SNRs when inserted into the radiative phase.
{"title":"STUDYING THE PHYSICAL PROPERTIES OF TYPE IA AND II SUPERNOVA REMNANTS","authors":"Ari A. Yatem","doi":"10.24271/psr.2022.335494.1126","DOIUrl":"https://doi.org/10.24271/psr.2022.335494.1126","url":null,"abstract":"Supernova remnants (SNRs) are remarkable astronomical objects which are a diffuse, an expanding nebula of gas that is a direct result of a star's explosive death, resulting in a supernova explosion. SNRs play a vital role in the scattering of tough elements which are made in the supernova explosion into the interstellar medium and provide much amount of energy that heats the ISM, as well as its responsible for enormous differences in physical process and properties. In the present work, we study the physical properties, performance, and behavior of dynamical growth of several types (SNR Ia and II) specifically after an explosion of a supernova, and explore how the density of the interstellar environment affects the physical properties and eternity of each SNRs. To achieve such goals, we have utilized the method known as Counting Pixels Method, which has been applied to the SNRs images as well as a new pattern that has been suggested to calculate some of the physical properties such as the expansion velocity and the radius of the chosen remnants, which are based on the age of SNRs and the density of the surrounding medium. The outcomes of the study have depicted that each chosen SNRs type Ia and II likewise in performance and behavior after a long period of explosion Nevertheless, they are displaced either upwards or downwards based on the interstellar density. However, we noted that SNRs are exploded in the lower density environment and expanded without restriction to make a regular shape. We have concluded that further study is required particularly on the physical properties of SNRs when inserted into the radiative phase.","PeriodicalId":33835,"journal":{"name":"Passer Journal","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68882520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.24271/psr.2022.318987.1111
R. A. Johni, K. R. Tariq, Roshen Tariq Ahmadhamdi, D. Forsyth
This paper presents a theoretical study of various types of fiber optic sensing systems used for seismic monitoring integrating a series of fiber optic Bragg gratings (FBGs) into the sensor carrier. The interference network contains groups of interfering subnets, and each subnet contains multiple interference networks. Each interferometer in the subband is implemented with a specific pair of fiber Bragg gratings and the sensing length of the fiber is placed between each pair of fiber Bragg gratings. Each fiber Bragg grating pair has a similar characteristic wavelength modified from the characteristic wavelength of all other fiber Bragg grating pairs in the subband. The subarrays are interconnected to minimize crosstalk of common wavelengths between the sensors throughout the interferometer array. Our work is focused on investigating the selection of the best wavelength for use in the system. This study was performed using state-of-the-art simulation techniques for strain and temperature changes in FBG sensor arrays. The cumulative results obtained will help designers achieve optimized performance of similar fiber optic hydrophones in the future. The wavelength range of 1300 nm has been shown to provide the best performance for this type of fiber optic hydrophone system.
{"title":"Investigation into Fiber Optic Seismic Sensor incorporating Fiber Bragg Grating Array","authors":"R. A. Johni, K. R. Tariq, Roshen Tariq Ahmadhamdi, D. Forsyth","doi":"10.24271/psr.2022.318987.1111","DOIUrl":"https://doi.org/10.24271/psr.2022.318987.1111","url":null,"abstract":"This paper presents a theoretical study of various types of fiber optic sensing systems used for seismic monitoring integrating a series of fiber optic Bragg gratings (FBGs) into the sensor carrier. The interference network contains groups of interfering subnets, and each subnet contains multiple interference networks. Each interferometer in the subband is implemented with a specific pair of fiber Bragg gratings and the sensing length of the fiber is placed between each pair of fiber Bragg gratings. Each fiber Bragg grating pair has a similar characteristic wavelength modified from the characteristic wavelength of all other fiber Bragg grating pairs in the subband. The subarrays are interconnected to minimize crosstalk of common wavelengths between the sensors throughout the interferometer array. Our work is focused on investigating the selection of the best wavelength for use in the system. This study was performed using state-of-the-art simulation techniques for strain and temperature changes in FBG sensor arrays. The cumulative results obtained will help designers achieve optimized performance of similar fiber optic hydrophones in the future. The wavelength range of 1300 nm has been shown to provide the best performance for this type of fiber optic hydrophone system.","PeriodicalId":33835,"journal":{"name":"Passer Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68882336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zana Azeez Kakarash, S. H. Karim, Nawroz Fadhel Ahmed, Govar Abubakr Omar
Wireless sensor networks (WSNs) have found great appeal and popularity among researchers, especially in the field of monitoring and surveillance tasks. However, it has become a challenging issue due to the need to balance different optimization criteria such as power consumption, packet loss rate, and network lifetime, and coverage. The novelty of this research discusses the applications, structures, challenges, and issues we face in designing WSNs. And proposed new Topology control mechanisms it will focus more on building a reliable and energy efficient network topology step by step through defining available amount of energy for each node within its cluster, sorting all within header, and selecting an active one (more power header) for signal routing. While sensor cover topology demonstrates network monitoring capability, connection topology should remain as a requirement for the successful delivery of information including queries, data collected, and control messages. How to build an optimized coating topology while remaining efficient and low-cost connection is not well understood and needs further research. Power control and power management are two different types of topology controllers. Also in our study, we examine network lifetime, compared to other schemas time of death of the first node and the last node, and found that network lifetime was increased. Finally, a topology control method for extending network lifetime is presented.
{"title":"New Topology Control base on Ant Colony Algorithm in Optimization of Wireless Sensor Network","authors":"Zana Azeez Kakarash, S. H. Karim, Nawroz Fadhel Ahmed, Govar Abubakr Omar","doi":"10.24271/PSR.22","DOIUrl":"https://doi.org/10.24271/PSR.22","url":null,"abstract":"Wireless sensor networks (WSNs) have found great appeal and popularity among researchers, especially in the field of monitoring and surveillance tasks. However, it has become a challenging issue due to the need to balance different optimization criteria such as power consumption, packet loss rate, and network lifetime, and coverage. The novelty of this research discusses the applications, structures, challenges, and issues we face in designing WSNs. And proposed new Topology control mechanisms it will focus more on building a reliable and energy efficient network topology step by step through defining available amount of energy for each node within its cluster, sorting all within header, and selecting an active one (more power header) for signal routing. While sensor cover topology demonstrates network monitoring capability, connection topology should remain as a requirement for the successful delivery of information including queries, data collected, and control messages. How to build an optimized coating topology while remaining efficient and low-cost connection is not well understood and needs further research. Power control and power management are two different types of topology controllers. Also in our study, we examine network lifetime, compared to other schemas time of death of the first node and the last node, and found that network lifetime was increased. Finally, a topology control method for extending network lifetime is presented.","PeriodicalId":33835,"journal":{"name":"Passer Journal","volume":"48 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2021-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87940173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Climate change has a historical impact at universal and local levels over the past era. Climate change is one of the greatest challenge issues in the globe for meteorological research. Air temperature estimation, in particular, has been measured as a significant feature in weather impression studies on industrial sectors, environmental, ecological, and agricultural. Accurately predicting air temperature guides to measure lifestyle, perform a key character for the government, industries, and public in development activities. In this paper, we investigate the use of various data mining approaches such as Support Vector Machine (SVM), Decision tree (DT), and Naïve Bayes for air temperature prediction within Sulaymaniyah City in Kurdistan, IRAQ. The metrological data is collected from the local Weather Forecast Department in the city within the range 2013 to 2018 inclusive. A dataset for the metrological data was developed and used to train the data mining algorithms. The proposed data mining algorithms were tested on the dataset to predict the air temperature and the performance of these algorithms were compared using standard performance metrics. Support vector machine has accomplished promising performance among using algorithms
{"title":"Air Temperature Prediction Using Different Datamining Approaches In Sulaymaniyah City In Iraq","authors":"Yosra Mohammed, Sherko Murad, Brzu Tahir","doi":"10.24271/PSR.21","DOIUrl":"https://doi.org/10.24271/PSR.21","url":null,"abstract":"Climate change has a historical impact at universal and local levels over the past era. Climate change is one of the greatest challenge issues in the globe for meteorological research. Air temperature estimation, in particular, has been measured as a significant feature in weather impression studies on industrial sectors, environmental, ecological, and agricultural. Accurately predicting air temperature guides to measure lifestyle, perform a key character for the government, industries, and public in development activities. In this paper, we investigate the use of various data mining approaches such as Support Vector Machine (SVM), Decision tree (DT), and Naïve Bayes for air temperature prediction within Sulaymaniyah City in Kurdistan, IRAQ. The metrological data is collected from the local Weather Forecast Department in the city within the range 2013 to 2018 inclusive. A dataset for the metrological data was developed and used to train the data mining algorithms. The proposed data mining algorithms were tested on the dataset to predict the air temperature and the performance of these algorithms were compared using standard performance metrics. Support vector machine has accomplished promising performance among using algorithms","PeriodicalId":33835,"journal":{"name":"Passer Journal","volume":"50 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2021-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90974326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Antibiotic-resistant bacteria are among the major healthcare problem worldwide and Acinetobacter baumannii is a leading threat among them. In this study, the combined effects of different antibiotics with silver nanoparticles (AgNPs) were assessed against the growth of a clinical isolate of A. baumannii. The bacterial strain was isolated from a hospitalized burned patient in Sulaimanyah- Iraq. Identification of the isolated bacterium was done based on the partial sequence of the 16S rRNA gene and phylogenetic analysis. The growth of the bacterium was totally inhibited by AgNPs at the concentration of (0.2 mg/ml). AgNPs treatment showed a partial synergistic effect with azithromycin (Fractional Inhibitory Concentration Index (FICI) = 0.6) and an additive effect with kanamycin (FICI = 1.67). Not a significant difference in the antimicrobial activities of either ampicillin or tetracycline was observed when they used alone or in combination with AgNPs. Overall, this study may provide a promising future use of azithromycin with AgNPs to treat A. baumannii superficial infections; however, a combination of kanamycin with AgNPs together should be avoided.
{"title":"Antimicrobial Activity of Silver Nanoparticles with Antibiotics Against Clinically Isolated Acinetobacter baumannii","authors":"Pyman M. Mohamedsalih, D. Sabir","doi":"10.24271/psr.11","DOIUrl":"https://doi.org/10.24271/psr.11","url":null,"abstract":"Antibiotic-resistant bacteria are among the major healthcare problem worldwide and Acinetobacter baumannii is a leading threat among them. In this study, the combined effects of different antibiotics with silver nanoparticles (AgNPs) were assessed against the growth of a clinical isolate of A. baumannii. The bacterial strain was isolated from a hospitalized burned patient in Sulaimanyah- Iraq. Identification of the isolated bacterium was done based on the partial sequence of the 16S rRNA gene and phylogenetic analysis. The growth of the bacterium was totally inhibited by AgNPs at the concentration of (0.2 mg/ml). AgNPs treatment showed a partial synergistic effect with azithromycin (Fractional Inhibitory Concentration Index (FICI) = 0.6) and an additive effect with kanamycin (FICI = 1.67). Not a significant difference in the antimicrobial activities of either ampicillin or tetracycline was observed when they used alone or in combination with AgNPs. Overall, this study may provide a promising future use of azithromycin with AgNPs to treat A. baumannii superficial infections; however, a combination of kanamycin with AgNPs together should be avoided.","PeriodicalId":33835,"journal":{"name":"Passer Journal","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82712626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：