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A New Image Watermarking Scheme Using Genetic Algorithm and Residual Numbers with Discrete Wavelet Transform

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Journal of Information Security 2023年第4期14卷 422-436页

作者： Peter Awonnatemi Agbedemnab Mohammed Akolgo Moses Apambila Agebure Department of Information Systems and technology School of Computing and Information Sciences C.K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of computer Science School of Computing and Information Sciences C.K. Tedam University of Technology and Applied Sciences Navrongo Ghana

Transmission of data over the internet has become a critical issue as a result of the advancement in technology, since it is possible for pirates to steal the intellectual property of content owners. This paper presents a new digital watermarking scheme that combines some operators of the Genetic Algorithm (GA) and the Residue Number (RN) System (RNS) to perform encryption on an image, which is embedded into a cover image for the purposes of watermarking. Thus, an image watermarking scheme uses an encrypted image. The secret image is embedded in decomposed frames of the cover image achieved by applying a three-level Discrete Wavelet Transform (DWT). This is to ensure that the secret information is not exposed even when there is a successful attack on the cover information. content creators can prove ownership of the multimedia content by unveiling the secret information in a court of law. The proposed scheme was tested with sample data using MATLAB2022 and the results of the simulation show a great deal of imperceptibility and robustness as compared to similar existing schemes.

关键词： Discrete Wavelet Transform (DWT) Digital Watermarking Encryption Genetic Algorithm (GA) Residue Number System (RNS) GARN

Deciphering Water Oxidation catalysts:The Dominant Role of Surface chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： Li An Jianyi Li Yuanmiao Sun Jiamin Zhu Justin Zhu Yeow Seow Hong Zhang Nan Zhang Pinxian Xi * Zhichuan JXu chun‑Hua Yan State key Laboratory of applied Organic chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State key Laboratory of Baiyunobo Rare Earth Resource Researches and comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

Potential Risks to the Environment as a Result of Pesticide Handling in the Nanumba-North Municipality, Ghana

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Journal of Agricultural chemistry and Environment 2023年第2期12卷 65-83页

作者： Fusheini Yakubu kenneth B. Pelig-Ba Samson A. Abagale Lateef Adebayo Oseni Department of chemistry and Biochemistry C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana

The present study deduced the potential risks to the environment as a result of pesticide handling in the Nanumba-North Municipality of the Northern Region of Ghana. cluster sampling was used to select 30 communities from Nanumba-North Municipality. Simple random sampling and purposive sampling were used respectively to select 7 households from each community and one farmer from each household, giving a sample size of 210 farmers. The instrument used for the study was a questionnaire of respondents. The quantitative data obtained were analyzed using frequencies and percentages. The study concluded that 11 types of pesticides are commonly used by the farmers on their fields, with atrazine (22%) being the most commonly used pesticide which is an herbicide, and deltamethrin (1%) was the least used pesticide which is an insecticide. The study, therefore, recommends that appropriate authorities in the area should inculcate means to enlighten farmers on the best way of pesticide utilization that can beef up the ambition of sustainable agricultural production and desirable environmental conditions.

关键词： Pesticide Risk Nanumba-North Municipality Environment

Pseudoscalar meson and baryon octet interaction with strangeness zero in the unitary coupled-channel approximation

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chinese Physics c 2019年第6期43卷 107-114页

作者： Bao-Xi Sun Si-Yu Zhao Xiang-Yu Wang college of applied sciences Beijing University of Technology

The interaction of the pseudoscalar meson and the baryon octet is investigated by solving the Bethe-Salpeter equation in the unitary coupled-channel approximation. In addition to the Weinberg-Tomozawa term, the contribution of the s-and u-channel potentials in the-wave approximation are taken into account. In the sector of isospin I=1/2 and strangeness S =0, a pole is detected in a reasonable region of the complex energy plane of ■ in the center-of-mass frame by analyzing the behavior of the scattering amplitude, which is higher than the ηN threshold and lies on the third Riemann sheet. Thus, it can be regarded as a resonance state and might correspond to the N(1535) particle of the Particle Data Group(PDG) review. The coupling constants of this resonance state to the πN,ηN,kΛ and kΣ channels are calculated, and it is found that this resonance state couples strongly to the hidden strange channels. Apparently, the hidden strange channels play an important role in the generation of resonance states with strangeness zero. The interaction of the pseudoscalar meson and the baryon octet is repulsive in the sector of isospin I = 3/2 and strangeness S = 0, so that no resonance state can be generated dynamically.

关键词： chiral Lagrangian pion-nucleon interaction Bethe-Salpeter equation

New Approaches to the Prognosis and Diagnosis of Breast cancer Using Fuzzy Expert Systems

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Journal of computer and communications 2024年第5期12卷 151-169页

作者： Elias Ayinbila Apasiya Abdul-Mumin Salifu Peter Awon-Natemi Agbedemnab Department of computer Science School of Computing and Information Sciences C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana

Breast cancer remains a significant global health challenge, necessitating effective early detection and prognosis to enhance patient outcomes. current diagnostic methods, including mammography and MRI, suffer from limitations such as uncertainty and imprecise data, leading to late-stage diagnoses. To address this, various expert systems have been developed, but many rely on type-1 fuzzy logic and lack mobile-based applications for data collection and feedback to healthcare practitioners. This research investigates the development of an Enhanced Mobile-based Fuzzy Expert system (EMFES) for breast cancer pre-growth prognosis. The study explores the use of type-2 fuzzy logic to enhance accuracy and model uncertainty effectively. Additionally, it evaluates the advantages of employing the python programming language over java for implementation and considers specific risk factors for data collection. The research aims to dynamically generate fuzzy rules, adapting to evolving breast cancer research and patient data. key research questions focus on the comparative effectiveness of type-2 fuzzy logic, the handling of uncertainty and imprecise data, the integration of mobile-based features, the choice of programming language, and the creation of dynamic fuzzy rules. Furthermore, the study examines the differences between the Mamdani Inference System and the Sugeno Fuzzy Inference method and explores challenges and opportunities in deploying the EMFES on mobile devices. The research identifies a critical gap in existing breast cancer diagnostic systems, emphasizing the need for a comprehensive, mobile-enabled, and adaptable solution by developing an EMFES that leverages Type-2 fuzzy logic, the Sugeno Inference Algorithm, Python Programming, and dynamic fuzzy rule generation. This study seeks to enhance early breast cancer detection and ultimately reduce breast cancer-related mortality.

关键词： EMFES Breast cancer Type-2 Fl Soft computing Membership Functions Fuzzy Set Fuzzy Rules Risk Factors.

Using Residual Estimators to Detect Outliers and Potential controlling Observations in Structural Equation Modelling: QQ Plot Approach

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Open Journal of Statistics 2020年第5期10卷 905-914页

作者： A. R. Abdul-Aziz Albert Luguterah Bashiru I. I. Saeed Department of Mathematics & Statistics Kumasi Technical University (KsTU) Kumasi Ghana Department of Statistics Faculty of Mathematical Sciences C.K. Tedam University of Technology and Applied Sciences (CKT-UTAS) Navrongo Ghana Department of Statistical sciences Tamale Technical University (TaTU) Tamale Ghana

The structural equation model (SEM) concept is generally influenced by the presence of outliers and controlling variables. To a very large extent, this could have consequential effects on the parameters and the model fitness. Though previous researches have studied outliers and controlling observations from various perspectives including the use of box plots, normal probability plots, among others, the use of uniform horizontal QQ plot is yet to be explored. This study is, therefore, aimed at applying uniform QQ plots to identifying outliers and possible controlling observations in SEM. The results showed that all the three methods of estimators manifest the ability to identify outliers and possible controlling observations in SEM. It was noted that the Anderson-Rubin estimator of QQ plot showed a more efficient or visual display of spotting outliers and possible controlling observations as compared to the other methods of estimators. Therefore, this paper provides an efficient way identifying outliers as it fragments the data set.

关键词： Outliers controlling Observations Estimators QQ Plots Structural Equation Modelling

Synergistic Interactions of Soil and Vegetation in Agroforestry Systems in Mitigating climate change in Upper East Region, Ghana

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American Journal of climate change 2024年第2期13卷 140-162页

作者： Joshua A. Adombire Abdul-Wahab M. Imoro Eunice Essel Nang B. Douti Department of Environmental Science C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of Forestry and Forest Resources Management University for Development Studies Tamale Ghana Department of crop Science and Biotechnology C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana

climate change has been a global pandemic with its adverse impacts affecting environments and livelihoods. This has been largely attributed to anthropogenic activities which generate large amounts of Green House Gases (GHGs), notably carbon dioxide (cO2), methane (cH4), and nitrous oxide (N2O) among others. In the Upper East of Ghana, climate change manifests in erratic rainfalls, drought, high temperatures, high wind speeds, high intensity rainfall, windstorms, flooding, declining vegetation cover, perennial devastating bushfires etc. Practices such as burning farm residues, use of dung as fuel for cooking, excessive application of nitrogenous fertilizers, and deforestation that are prevalent in the region exacerbate the situation. Although, efforts made by governmental and none-governmental organizations to mitigate climate change through afforestation, agroforestry and promotion of less fuelwood consuming cook stoves, land management practices antagonize these efforts as more cO2 is generated than the carrying capacity of vegetation in the region. Research findings have established the role of trees and soil in carbon sequestration in mitigating climate. However, there is limited knowledge on how the vegetation and soil in agroforestry interplay in mitigation climate change. It is against this background that this review seeks to investigate how vegetation and soil in an agroforestry interact synergistically to sequester carbon and contribute to mitigating climate change in Upper East region of Ghana. In this review, it was discovered soil stored more carbon than vegetation in an agroforestry system and is much effective in mitigating climate change. It was found out that in order to make soil and vegetation in an agroforestry system interact synergistically to effectively mitigate climate change, climate Smart Agriculture practice which integrates trees, and perennials crops effectively mitigates climate. The review concluded that tillage practices that ensure r

关键词： climate change carbon Sequestration Agroforestry Photosynthesis Nutrient Mining Synergistic

Effects of Maternal Death on children Living in the Sagnarigu Municipality

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Open Journal of Obstetrics and Gynecology 2024年第3期14卷 334-347页

作者： David Z. kolbila Abdul-Razak Doat David S. Nigarim Wilfred kwose Sylvanus kampo Department of Obstetrics and Gynecology School of Medicine University for Development Studies Tamale Ghana Department of Nursing School of Nursing and Midwifery C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of Anaesthesia and Intensive care School of Medicine and Dentistry C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana

Introduction: The greatest effect of maternal mortality is renowned in children aged 2 - 5 months whose mothers had died. children whose mothers died due to maternal complications were likely to record a higher mortality in infancy compared to children of surviving mothers. Motherless children mostly suffer a lot due to lack of day-to-day care, isolation, lack of motivation as well as economic cost associated with mother’s death. Thus, the purpose of this study was to ascertain the lives of children whose mothers passed away during childbirth at the Sagnarigu Municipality. Methods: This quantitative cross-sectional study was carried out at the Sagnarigu Municipal. The study recruited 297 respondents. To assess the effects of maternal death on the lives of children, families that experienced maternal death were assessed. The number of pregnancies experienced by the deceased woman, pregnancy-related complaints experienced, determinants of maternal death, number of children alive, and their standard of living were assessed with the aid of a structured questionnaire. Results: The data showed that negligence, illiteracy, poor road access, poverty, ignorance, delays in recognizing the problem, delays in making appropriate decisions, delays in the health facility, delays in giving the appropriate treatments, and traditional beliefs were some of the factors that led to maternal death in the Sagnarigu Municipality. conclusion: The study concluded that determinants of maternal death in the Sagnarigu Municipal included the following;negligence, illiteracy, poverty, and delays in recognizing the problem. The study findings also demonstrated that the effects of maternal death on children are diverse and cut across different areas of a child’s life including livelihood sustenance, healthcare, education, and emotional and psychological development.

关键词： Maternal Death Effects Orphans children Pregnancy childbirth

Preliminary Investigation of Formulated Herbal Ointment Demonstrates Amelioration of Excision Wound in Experimental Rabbit Model compared with Silver Sulfadiazine

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Journal of Biosciences and Medicines 2022年第12期10卷 32-41页

作者： Martin Ntiamoah Donkor Richard Mosobil Abdul Wadudu Yakubu kutub Shaibu Addai-Mensah Donkor Department of Biochemistry and Forensic sciences School of Chemical and Biochemical Sciences C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of applied chemistry School of Chemical and Biochemical Sciences C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of chemistry Faculty of Physical Science University for Development Studies Tamale Ghana Department of Pharmaceutics School of Pharmacy and Pharmaceutical Sciences University for Development Studies Tamale Ghana

In light of the use of Lannea barteri in the management of diverse illnesses and treatment of wounds in traditional medicine, the current study was conducted to assess the wound-healing efficacy of crude aqueous extract of the stem bark of Lannea barteri and its shea butter formulated ointment using an excision wound model in the rabbit. The herbal ointment (5%, w/w) exhibited a significant wound healing activity, showing 99.9% ± 0.3% wound contraction at the end of the experiment (24th day). There was no significant difference (p > 0.05) between the 5% (w/w) herbal ointment compared with Silver Sulphadiazine cream (positive control), which showed a 97.8% ± 1.0% rate of excision wound contraction on day 24. compared with the negative control group (administered with only shea butter), the wound healing activity of the ointment was significant (p Lannea barteri for the treatment of wounds and demonstrates that shea butter usage as a base in formulating an herbal ointment might aid in topical application for wound repair and regeneration, as well as the potential for enhanced wound healing.

关键词： Excision Wound Model Wound Healing Lannea barteri Shea Butter Formulation