49 Pub Date : 2023-06-30 DOI: 10.56714/bjrs.49.1.4

Ahmed M. Zaidan, Zainab T. Alabdullah, Uhood J. Al-Hamdani

引用次数: 0

Human Exposure Assessment of Tris (1-chloro-2-propyl) phosphate (TCIPP) via Dermal Contact with Car Dust 人体通过皮肤接触汽车粉尘对三氯二丙基磷酸(TCIPP)的暴露评估

49 Pub Date : 2023-06-30 DOI: 10.56714/bjrs.49.1.10

Banan B. Hashim, L. S. Al-Omran

{"title":"Human Exposure Assessment of Tris (1-chloro-2-propyl) phosphate (TCIPP) via Dermal Contact with Car Dust","authors":"Banan B. Hashim, L. S. Al-Omran","doi":"10.56714/bjrs.49.1.10","DOIUrl":"https://doi.org/10.56714/bjrs.49.1.10","url":null,"abstract":"Tris (1-chloro-2-propyl) phosphate (TCIPP) synthesis halogenated organophosphate compound that is widely used as flame retardants and plasticizer. The toxicity of TCIPP has led to concern about human exposure. Dermal absorption via indoor dust (particularly cars) represents one of the major human exposure pathways. The present study reports on the investigation of the levels of TCIPP in car dust samples from Basrah Iraq. The samples were collected from 24 private cars in different years of manufacture and countries. After the extraction and purification, samples were analysed by GC-EI/MS. Concentrations of TCIPP in dust samples were between 784 and 29478 ng/g with mean and median concentrations of 5162, 2696 ng/g respectively. Based on the manufactured country, Korean cars were the lowest levels of TCIPP comparing with Chinses,Japanese and the USA manufacture cars. Estimations daily intake via dermal absorptions showed that taxi drivers are more exposed to those of the two age groups (adults and toddlers), with an average of 0.124, 0.493 and 0.842 (ng/kg bw/day) for adults, toddlers and taxi drivers respectively. Those results were several orders of magnitude lower than the corresponding reference dose (RfD values).","PeriodicalId":127734,"journal":{"name":"49","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126669077","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}

引用次数: 0

Role Based Access Control Using Biometric the in Educational System 基于角色的生物识别访问控制在教育系统中的应用

49 Pub Date : 2023-06-30 DOI: 10.56714/bjrs.49.1.8

M. K. Kabier, A. Yassin, Z. Abduljabbar, Songfeng Lu

{"title":"Role Based Access Control Using Biometric the in Educational System","authors":"M. K. Kabier, A. Yassin, Z. Abduljabbar, Songfeng Lu","doi":"10.56714/bjrs.49.1.8","DOIUrl":"https://doi.org/10.56714/bjrs.49.1.8","url":null,"abstract":"The purpose of a secure e-learning system based on cloud computing is to allow instructors and students to access their accounts at any time and from anywhere. These types of systems work to ensure that their users (instructors and students) are truly enrolled in the school or institute to prevent unauthorized users from accessing the resources and components of the system. Furthermore, the traditional authentication techniques used in the majority of educational systems suffer from several issues, such as cyber security attacks and weak management of resources. So, some students could be eager to take advantage of such a system's flaw in an effort to cheat. User authentication and end-user monitoring are more difficult in this situation. Multifactor adaptive authentication techniques are used to implement a system with simultaneous authentication. The proposed scheme system offers an effective, affordable, and human intervention-adaptive authentication and monitoring solution for e-learning environments. Additionally, our work can resist cyber security and contains some good metrics like mutual authentication, user anomalies, and others. In this paper, the proposed scheme system uses a two-factor authentication system based on Asymmetric Scalar Product Preserving Encryption (APSE) and fingerprint biometrics for managing and generating a user's account in a secure way. Our work also achieves a good balance between performance and security complexity compared to the state-of-the-art. So, we achieve good results for 1.69 ms for computation and 1280 bits for communication.","PeriodicalId":127734,"journal":{"name":"49","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129533782","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}

引用次数: 0

Decomposition matrices and Brauer trees of spin characters for S_25 , p=17 S_25, p=17的自旋字符分解矩阵和Brauer树

49 Pub Date : 2023-06-30 DOI: 10.56714/bjrs.49.1.13

Marwa M. Jawad

引用次数: 0

Spin Characters' Decomposition Matrix, S24 modulo, p=7 自旋字符分解矩阵，S24模，p=7

49 Pub Date : 2023-06-30 DOI: 10.56714/bjrs.49.1.7

Ahmed H. Jassim, Saeed A. Taban

引用次数: 0

Investigate the electrical structure, optical character- characteristics, and phonon transport of the rock-salt (RS) CrTe monolayer using first-principles methods 利用第一性原理方法研究岩盐(RS) CrTe单层的电学结构、光学特性和声子输运

49 Pub Date : 2023-06-30 DOI: 10.56714/bjrs.49.1.6

Ali A. Nasser, Jabbar M. AL-Zyadi

{"title":"Investigate the electrical structure, optical character- characteristics, and phonon transport of the rock-salt (RS) CrTe monolayer using first-principles methods","authors":"Ali A. Nasser, Jabbar M. AL-Zyadi","doi":"10.56714/bjrs.49.1.6","DOIUrl":"https://doi.org/10.56714/bjrs.49.1.6","url":null,"abstract":"Density functional theory (DFT)-based first-principles computations are utilized to examine the phonon Boltzmann transport as well as the structural, electrical, and optical characteristics of the (RS) CrTe monolayer. The results demonstrated that the half-metal property is present in the (RS) CrTe monolayer. Whereas in the case of spin-up, the property of metal was achieved because the energy bands cut the level of Fermi, in the case of spin-down, because an energy gap emerged on both sides of the Fermi EF level, the semiconductor was produced. That is, there is a gap between the conduction band and the valence band, and the absolute magnitude of the sum of both gaps indicates to the (RS) CrTe monolayer total energy gap which has a value of 0.902 eV. The magnetic moment per cell unit of an (RS) CrTe monolayer is equivalent to 4μB. The (RS) CrTe monolayer has a strong polarization with a spin equal to 100% at the Fermi level due to the half-mineral. Our findings demonstrate the wide absorption spectrum of the (RS) CrTe monolayer, spanning visible light to the ultraviolet region, as well as its decreased convergent phonon scattering rate. These results could lead to more theoretical and experimental research on the CrTe monolayer's electrical structure, optical properties, and ability to conduct heat.","PeriodicalId":127734,"journal":{"name":"49","volume":"378 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132842273","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}

引用次数: 0

Feature Selection Using a Hybrid Approach Depends on Filter and Wrapper Methods for Accurate Breast Cancer Diagnosis 使用混合方法的特征选择依赖于准确的乳腺癌诊断的过滤器和包装方法

49 Pub Date : 2023-06-01 DOI: 10.56714/bjrs.49.1.5

Mohammed S. Hashim, Ali A. Yassin

引用次数: 0

Sexual education of secondary school students: problems and ways of solution 中学生性教育:问题与解决途径

49 Pub Date : 2021-12-30 DOI: 10.26565/2074-8167-2021-49-06

Y. Shvedova, K. Zhuravel, K. Statsenko, A. Khamalyan

{"title":"Sexual education of secondary school students: problems and ways of solution","authors":"Y. Shvedova, K. Zhuravel, K. Statsenko, A. Khamalyan","doi":"10.26565/2074-8167-2021-49-06","DOIUrl":"https://doi.org/10.26565/2074-8167-2021-49-06","url":null,"abstract":"The need for all-round personality development actualizes the need for sex education among secondary school students, and annoying statistics confirm its urgency. The article analyzes the state of the organization of the process of sexual education of secondary school students, and also identifies ways to solve this problem. It was revealed that, in spite of theoretical developments, the practical embodiment of sex education among secondary school students is in its infancy, is carried out sporadically (it is part of individual disciplines, is carried out during class hours). An analysis of scientific sources, empirical studies and the results of the survey conducted established a contradiction between the need of secondary school student youth for comprehensive and targeted sex education and the unwillingness to carry it out by educational institutions for a number of reasons. The article substantiates the need for sex education for secondary school students, suggests the possible content of the discipline and outlines the functions that it performs, emphasizing that the basis of the subject is based not only on understanding sexuality and establishing gender identity, but also in the ability to defend one's own boundaries, to solve the problem of violence; in the understanding that you need to respect other people and reckon with their thoughts and attitudes; as well as in the adaptation of the child to society according to his age and development.","PeriodicalId":127734,"journal":{"name":"49","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126853336","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}

引用次数: 0

Immersion in a foreign environment as an effective way of development of communicative competence in the process of learning foreign languages 在外语学习过程中，沉浸在外国环境中是培养交际能力的有效途径

49 Pub Date : 2021-12-30 DOI: 10.26565/2074-8167-2021-49-05

О. Nalyvaiko, L. Nuralieva, L. Syvolotska

{"title":"Immersion in a foreign environment as an effective way of development of communicative competence in the process of learning foreign languages","authors":"О. Nalyvaiko, L. Nuralieva, L. Syvolotska","doi":"10.26565/2074-8167-2021-49-05","DOIUrl":"https://doi.org/10.26565/2074-8167-2021-49-05","url":null,"abstract":"The article considers the characteristics and analysis of the influence of a foreign language environment on a person in the process of learning foreign languages. The relevance of this research is connected to the fact that in recent years immersion in a foreign language environment has become increasingly popular all over the world due to the development of information and communication technologies. The article highlighted such concepts as \"immersion in a foreign language environment\", \"sociocultural approach\", \"psychological aspects\", \"sociocultural adaptation\", \"language barrier\", and also considered the effectiveness of immersion in a foreign language environment as a way of developing communicative competence. This article highlights the results of interviewing participants who at different time intervals and under different circumstances were in a foreign language environment and they had to answer ten questions regarding their experience, inner experiences and psychological difficulties that they encountered being in a foreign language environment. The respondents shared their impressions and expressed their view on the effectiveness of immersion in a foreign language environment as a way of developing communicative competence. Based on the results of the interviewing, the authors of the research highlighted important points that should be paid attention to and analyzed in detail.","PeriodicalId":127734,"journal":{"name":"49","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128661940","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}

引用次数: 0

The concept of distributed leadership in education: diversity and evolution of approaches 教育中分布式领导的概念:方法的多样性和演变

49 Pub Date : 2021-12-30 DOI: 10.26565/2074-8167-2021-49-07

V. Mandragelia

{"title":"The concept of distributed leadership in education: diversity and evolution of approaches","authors":"V. Mandragelia","doi":"10.26565/2074-8167-2021-49-07","DOIUrl":"https://doi.org/10.26565/2074-8167-2021-49-07","url":null,"abstract":"The purpose of the article is to analyze the theoretical and practical aspects, methodological approaches associated with the concept of distributed leadership (DL). This notion is very complex, contradictory, and there are many opinions regarding its essence, content, and genesis in the history of science, key components. Recent integrated educational innovations, the dynamic development of digital technologies, and the constraints associated with the pandemic call for a stronger teamwork of faculty and students and a rethinking of the overall concept of leadership. Leadership roles are many and varied, from facilitation, collaboration and influence, as well as carrying other aspects such as power and prestige. It should be added that the concept of \"distributed leadership\" is closely related to related concepts, such as “shared leadership” (SL), “collective leadership”, “collaborative leadership”, “co-leadership”, “emergent leadership”, ”dispersed’ leadership” and so on. Distributed leadership has many different aspects that are difficult to clearly define, but the vast majority of experts agree that This is the transfer of attention from the specifics of leadership styles, which are determined by the qualitative psychological and behavioral characteristics of formal and informal leaders, to a broader and systemic context, a distinctive feature of which is teamwork and collective creativity. The article analyzes different approaches to distributed leadership and emphasizes the need for its practical application in the field of education. DL has a huge impact on the qualitative improvement of the organizational culture of the team, the development of optimal solutions to complex problems, contributes to the preparation of proactive, creative individuals. This is very important in the field of education in a pandemic, when the role of digital technologies and the creativity of teachers is significantly increasing. It should also be emphasized that there is a close link between DL and the effectiveness of teachers.","PeriodicalId":127734,"journal":{"name":"49","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122087765","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}

引用次数: 0

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