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16 results on '"Garba, Abba"'

1. BlockVoke – Fast, Blockchain-Based Certificate Revocation for PKIs and the Web of Trust

Author

Garba, Abba, Bochem, Arne, Leiding, Benjamin, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Susilo, Willy, editor, Deng, Robert H., editor, Guo, Fuchun, editor, Li, Yannan, editor, and Intan, Rolly, editor

Published
2020
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8. Psychosocial perception of the effects of harmattan dust on the environment and health of building occupants in Maiduguri, Nigeria

Author

Garba Abba Habib, Alhaji Kasir Lawan, Alhaji Modu Bukar, Mala Ali Modu, Mohammed Alhaji Mohammed, Audu Alhaji Usman, and Kyari Bulama

Subjects
010504 meteorology & atmospheric sciences, Indoor air, Harmattan, Dust particles, Human Factors and Ergonomics, Building and Construction, 010501 environmental sciences, 01 natural sciences, Geography, Environmental health, Architecture, Dust control, Psychosocial, 0105 earth and related environmental sciences
Abstract

PurposeThe purpose of this paper is to investigate the psychosocial perception of harmattan dust on building openings, health and housekeeping to determine the influence of the dust on building occupants.Design/methodology/approachPopulation-representative survey data were collected from Maiduguri, Northeastern Nigeria, through physical administration of questionnaires by assessing several variables. Statistical package SPSS 16.0 was used for the data analysis, which is mainly descriptive analysis in frequencies, percentages and means together with a repeated Pearson’s chi-square analysis to identify the relationship between the factors and the significance testing.FindingsThe results show that majority (94.3%) experienced dust problem in harmattan season, and a larger part (76.6%) confirmed that the dust penetrates through doors and windows. Higher percentage (91.2%) noticed that the dust particles on their floor/furniture surfaces, and on an average, people clean their houses three times daily in harmattan season. Majority (80.5%) of the respondents smell dust in the harmattan season, and greater part (77.9%) experienced health challenges in this season, of which 12.8% confirmed harmattan dust aggravates their asthma, 13.6% confirmed it causes headache, 3.1% confirmed it exacerbated pneumonia, 58.5% confirmed it causes coughing, 3.5% confirmed catarrh, 2.3% confirmed nasal/respiratory congestion, sneezing and bronchitis and 6.2% experienced eye problems. Moreover, the results indicate that number/types of openings in a building are significantly associated with factors including smelling dust in the harmattan season and health problem experienced because of dust indoors. The number of times people clean their homes/workplaces is significantly related to important variables such as experiencing dust problem in harmattan season and number/type of openings in a building. The results further established that the health problem experienced by people is significantly related to important variables including dust problem experienced in the harmattan season and type of openings in a room.Originality/valueHarmattan dust is a serious challenge to health and well-being of building occupants in the study area. The built environment professionals need to optimize building openings for effective dust control indoors.

Published
2020

11. A digital rights management system based on a scalable blockchain

Author

Garba, Abba, Dwivedi, Ashutosh Dhar, Kamal, Mohsin, Srivastava, Gautam, Tariq, Muhammad, Hasan, M. Anwar, Chen, Zhong, Garba, Abba, Dwivedi, Ashutosh Dhar, Kamal, Mohsin, Srivastava, Gautam, Tariq, Muhammad, Hasan, M. Anwar, and Chen, Zhong

Abstract

Even though the Internet promotes data sharing and transparency, however it does not protect digital content. In today’s digital world, it has become a difficult task to release a DRM (Digital Rights Management) system that can be considered well-protected. Digital content that becomes easily available in open-source environments will in time be worthless to the creator. There may only be a one-time payment to creators upon initial upload to a given platform after which time the rights of the intellectual property are shifted to the platform itself. However, due to the online availability of content, anyone can download content and make copies. The value of digital content slowly decreases, because the value of content can usually be determined through the difficulty of it’s accessibility. There is no way to track the leakage or copyright for the spread of digital material. In this paper, a distributed media transaction framework for DRM is proposed, which is based on the digital watermarking and a scalable blockchain model. In this paper, our focus is on improving the classic blockchain systems to make it suitable for a DRM model. The DRM model in this paper allows only authorized users to use online content and provide original multimedia content. While the digital watermarking is used to reclaim the copyright ownership of offline contents in the event when the contents are leaked.

Published
2020

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