Yasin Mohammed - Academia.edu (original) (raw)
Papers by Yasin Mohammed
Journal of Engineering and Sustainable Development, 2020
Wireless Sensor Networks (WSNs) consist of wirelessly sensor nodes that set with radio interface ... more Wireless Sensor Networks (WSNs) consist of wirelessly sensor nodes that set with radio interface which they communicated via it with one another to form a network. Sensor nodes enable environment monitoring and data processing. The advance in both wireless sensor and data processing technologies gives environmental management systems the ability to monitor real-time remote location. Developments in sensor's technologies like embedded systems, distributed processing, Micro Electro Mechanical Systems (MEMS), wireless communications, and wireless sensor applications have contributed the transformation in WSNs recently. WSNs have improved work performance and they have been used in many fields especially for survey and monitoring in environmental monitoring systems (EMSs). This paper aims to introduce a brief overview of wireless sensor networks (WSNs) that are used in the applications of environmental monitoring systems (EMSs).
Bulletin of animal health and production in Africa, 2017
2018 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2018
Fragment-type structures are potential for acquiring high isolation for a compact MIMO (multiple-... more Fragment-type structures are potential for acquiring high isolation for a compact MIMO (multiple-input and multiple-output) system. A novel boundary-based median filtering operator is proposed to increase the number of optimized candidates. For example., fragment-type isolation structures of a compact MIMO PIFAs (planar inverted-F antennas) system operating at 2.345GHz-2.36GHz and having a center-to-center interval of 15mm are designed. Comparison results show that more alternative designs could be found at the expense of searching speed, and both better front-back-ratio and wider impedance bandwidth are observed.
ARPN journal of engineering and applied sciences, 2016
Signal detection is important in sonar and underwater digital communication. Optimum signal detec... more Signal detection is important in sonar and underwater digital communication. Optimum signal detection in underwater acoustic noise (UWAN) can be achieved with the knowledge of noise statistics. The assumption of Gaussian noise allows the use of linear correlation (LC) detectors. However, the non-Gaussian nature of UWAN results in the poor performance of such detectors. This study presents an empirical model of the characteristics of UWAN in the shallow waters of an acoustic underwater channel. Four detectors for the detection of known signals in UWAN are compared: locally optimal (LO) detector, sign correlation (SC) detector, LC detector, and the proposed Gaussian noise injection detector (GNID). The performance of the detectors is evaluated according to the detection probability ( ) and receiver operating characteristic curves. Given a probability of false alarm �) rate of 0.01 and of 90 percent, the energy-tonoise ratios of the LO detector, SC detector, GIND, and LC detector are 8...
Fırat Üniversitesi Sosyal Bilimler Dergisi, 2016
Demokratik siyasal sistemlerde seçimin önemli olduğu bilinen bir gerçektir. Ancak demokratik siya... more Demokratik siyasal sistemlerde seçimin önemli olduğu bilinen bir gerçektir. Ancak demokratik siyasal sistemler için dünya genelinde en iyi olarak kabul edilebilecek bir seçim sistemi yoktur. Bu yüzden farklı ülkelerde birbirinden farklı seçim sistemleri kullanılmakta, kimileri özellikle Afrika ülkeleri, sadece kendi sömürgeci ülkelerindeki seçim sistemini benimsemişken kimileri de özenli bir kamusal tartışma sonucunda kendi seçim sistemlerini oluşturmuşlardır. Diğer Afrika ülkelerinden farklı olarak, Etiyopya bağımsız bir devlet olup, Hile-sellassie rejiminin (1930-1974) bazı göstermelik seçimlerinin dışında demokratik modern seçim türlerinin herhangi birinden tarihsel deneyim yaşamadan, 1994/5'te kabul edilen anayasa ile çoğunlukçu siyasal sistem ve özellikle çoğunluk esasına dayanan seçim sistemini kabul etmiştir. Bu çalışma bölünmüş toplumlarda özellikle Etiyopya üzerinde çoğunluk esasına dayanan seçim sisteminin zorluklarını değerlendirmekte ve temsil sorununu ele alarak, "Aktarılabilir Tek Oy" seçim sistemini Etiyopya için alternatif olabilecek bir seçim sistemi olarak önermektedir.
As the result of continuous development and the emergence of new technologies in the field of inf... more As the result of continuous development and the emergence of new technologies in the field of information systems, the issues of data integration has introduced a lot of concern for the past decades. Using heterogeneous systems and applications to support variety of processes has become the current trend in the adoption of information technology by organizations. From a business point of view, most of the organizational business processes are interrelated in some way. As such, the systems which have been implemented by organizations to perform various and multiple operations, should be able to interact and exchange data seamlessly to maximise productivities. One of the most used approach in conducting data integration is through building a data center. The purpose of a data centre is to allow data exchange among different types of applications. The purpose of this paper is to conduct a systematic literature review, in order to compare different structures and technologies used by data centers, such as the structures and technologies for data integration access, distributed realtime union view, multi-agent's social, and service oriented architecture. The paper also reveals how the multilayer software architecture could increase the flexibility of a software and facilitate the integration post-processes for organizations.
British Poultry Science, 2012
1. The objective was to evaluate the occurrence of cultivable components of the Bacteroides fragi... more 1. The objective was to evaluate the occurrence of cultivable components of the Bacteroides fragilis group in faeces of broiler chickens and their antimicrobial susceptibility patterns. 2. Faecal samples of 36 × 45-d-old Cobb broilers of both sexes from 15 different flocks on one farm were diluted 10-fold and plated on to Bacteroides-bile-esculin agar for colony count and isolation. Identification was by molecular methods and antimicrobial susceptibility in the agar dilution assay. 3. A total of 236 isolates was recovered from a mean population of 3·32 × 10(7 )colony-forming units/g of faeces. B. fragilis was shown to be the predominant Bacteroides species (45·3%), followed by B. distasonis (35·6%), B. vulgatus (8·9%), B. ovatus (2·5%) and B. stercoris (1·3%). 4. Among 204 bacterial isolates tested, high resistance to ampicillin (98·5%), norfloxacin (95·1%) and tetracycline (88·2%) were observed. High (89·7%) multi-drug resistance was observed to 3-7 of the tested drugs. 5. Components of the B. fragilis group were sub-dominant in broiler faecal microbiota, with a different species pattern compared with human and high antimicrobial multi-drug resistance.
A cross-sectional study was conducted from November 2016 to April 2017 to estimate the prevalence... more A cross-sectional study was conducted from November 2016 to April 2017 to estimate the prevalence of lung worm infection in small ruminants in selected kebele and surrounding village of Eteya in Arsi zone Oromia region, Ethiopia to determine prevalence, risk factors and identifying species of lungworm in small ruminants. Simple random sampling technique was followed to select sampling frame. Fecal samples from sheep and goats of all age groups and both sexes were examined by modified Baermann technique for the extraction of larvae (L1). Fecal examination was conducted in 400 (87 goat and 313 sheep. The overall prevalence of 43% was found by fecal examination. Dictyocaulus filarial, Protostrongylus rufescens, Muellerius capillaris and mixed parasitism were identified by faecal examination with total prevalence of 14.8%, 3.3%, 16.3% and 8.8%, respectively. The higher prevalence was observed in female (46%) than male (35.1%). In female (OR =1.908, CI= 1.093 3.331) had higher odds of in...
Journal of Immunology Research
Cutaneous leishmaniasis (CL) is a major public health problem worldwide and spreads to human via ... more Cutaneous leishmaniasis (CL) is a major public health problem worldwide and spreads to human via the bite of sand flies during blood meal. Following its inoculation, the promastigotes are immediately taken up by phagocytic cells and these leishmania-infected host cells produce proinflammatory cytokines that activate other immune cells and these infected host cells produce more cytokines and reactive nitrogen and oxygen species for efficient control of leishmania infection. Many experimental studies showed that resistance to infection with leishmania paraites is associated with the production of proinflammatory cytokines and activation of CD4+ Th1 response. On the other hand, vulnerability to this parasitic infection is correlated to production of T helper 2 cytokines that facilitate persistence of parasites and disease progression. In addition, some studies have also indicated that CD8+ T cells play a vital role in immune defense through cytokine production and their cytotoxic activ...
Journal of Engineering and Sustainable Development, 2020
Wireless Sensor Networks (WSNs) consist of wirelessly sensor nodes that set with radio interface ... more Wireless Sensor Networks (WSNs) consist of wirelessly sensor nodes that set with radio interface which they communicated via it with one another to form a network. Sensor nodes enable environment monitoring and data processing. The advance in both wireless sensor and data processing technologies gives environmental management systems the ability to monitor real-time remote location. Developments in sensor's technologies like embedded systems, distributed processing, Micro Electro Mechanical Systems (MEMS), wireless communications, and wireless sensor applications have contributed the transformation in WSNs recently. WSNs have improved work performance and they have been used in many fields especially for survey and monitoring in environmental monitoring systems (EMSs). This paper aims to introduce a brief overview of wireless sensor networks (WSNs) that are used in the applications of environmental monitoring systems (EMSs).
Bulletin of animal health and production in Africa, 2017
2018 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2018
Fragment-type structures are potential for acquiring high isolation for a compact MIMO (multiple-... more Fragment-type structures are potential for acquiring high isolation for a compact MIMO (multiple-input and multiple-output) system. A novel boundary-based median filtering operator is proposed to increase the number of optimized candidates. For example., fragment-type isolation structures of a compact MIMO PIFAs (planar inverted-F antennas) system operating at 2.345GHz-2.36GHz and having a center-to-center interval of 15mm are designed. Comparison results show that more alternative designs could be found at the expense of searching speed, and both better front-back-ratio and wider impedance bandwidth are observed.
ARPN journal of engineering and applied sciences, 2016
Signal detection is important in sonar and underwater digital communication. Optimum signal detec... more Signal detection is important in sonar and underwater digital communication. Optimum signal detection in underwater acoustic noise (UWAN) can be achieved with the knowledge of noise statistics. The assumption of Gaussian noise allows the use of linear correlation (LC) detectors. However, the non-Gaussian nature of UWAN results in the poor performance of such detectors. This study presents an empirical model of the characteristics of UWAN in the shallow waters of an acoustic underwater channel. Four detectors for the detection of known signals in UWAN are compared: locally optimal (LO) detector, sign correlation (SC) detector, LC detector, and the proposed Gaussian noise injection detector (GNID). The performance of the detectors is evaluated according to the detection probability ( ) and receiver operating characteristic curves. Given a probability of false alarm �) rate of 0.01 and of 90 percent, the energy-tonoise ratios of the LO detector, SC detector, GIND, and LC detector are 8...
Fırat Üniversitesi Sosyal Bilimler Dergisi, 2016
Demokratik siyasal sistemlerde seçimin önemli olduğu bilinen bir gerçektir. Ancak demokratik siya... more Demokratik siyasal sistemlerde seçimin önemli olduğu bilinen bir gerçektir. Ancak demokratik siyasal sistemler için dünya genelinde en iyi olarak kabul edilebilecek bir seçim sistemi yoktur. Bu yüzden farklı ülkelerde birbirinden farklı seçim sistemleri kullanılmakta, kimileri özellikle Afrika ülkeleri, sadece kendi sömürgeci ülkelerindeki seçim sistemini benimsemişken kimileri de özenli bir kamusal tartışma sonucunda kendi seçim sistemlerini oluşturmuşlardır. Diğer Afrika ülkelerinden farklı olarak, Etiyopya bağımsız bir devlet olup, Hile-sellassie rejiminin (1930-1974) bazı göstermelik seçimlerinin dışında demokratik modern seçim türlerinin herhangi birinden tarihsel deneyim yaşamadan, 1994/5'te kabul edilen anayasa ile çoğunlukçu siyasal sistem ve özellikle çoğunluk esasına dayanan seçim sistemini kabul etmiştir. Bu çalışma bölünmüş toplumlarda özellikle Etiyopya üzerinde çoğunluk esasına dayanan seçim sisteminin zorluklarını değerlendirmekte ve temsil sorununu ele alarak, "Aktarılabilir Tek Oy" seçim sistemini Etiyopya için alternatif olabilecek bir seçim sistemi olarak önermektedir.
As the result of continuous development and the emergence of new technologies in the field of inf... more As the result of continuous development and the emergence of new technologies in the field of information systems, the issues of data integration has introduced a lot of concern for the past decades. Using heterogeneous systems and applications to support variety of processes has become the current trend in the adoption of information technology by organizations. From a business point of view, most of the organizational business processes are interrelated in some way. As such, the systems which have been implemented by organizations to perform various and multiple operations, should be able to interact and exchange data seamlessly to maximise productivities. One of the most used approach in conducting data integration is through building a data center. The purpose of a data centre is to allow data exchange among different types of applications. The purpose of this paper is to conduct a systematic literature review, in order to compare different structures and technologies used by data centers, such as the structures and technologies for data integration access, distributed realtime union view, multi-agent's social, and service oriented architecture. The paper also reveals how the multilayer software architecture could increase the flexibility of a software and facilitate the integration post-processes for organizations.
British Poultry Science, 2012
1. The objective was to evaluate the occurrence of cultivable components of the Bacteroides fragi... more 1. The objective was to evaluate the occurrence of cultivable components of the Bacteroides fragilis group in faeces of broiler chickens and their antimicrobial susceptibility patterns. 2. Faecal samples of 36 × 45-d-old Cobb broilers of both sexes from 15 different flocks on one farm were diluted 10-fold and plated on to Bacteroides-bile-esculin agar for colony count and isolation. Identification was by molecular methods and antimicrobial susceptibility in the agar dilution assay. 3. A total of 236 isolates was recovered from a mean population of 3·32 × 10(7 )colony-forming units/g of faeces. B. fragilis was shown to be the predominant Bacteroides species (45·3%), followed by B. distasonis (35·6%), B. vulgatus (8·9%), B. ovatus (2·5%) and B. stercoris (1·3%). 4. Among 204 bacterial isolates tested, high resistance to ampicillin (98·5%), norfloxacin (95·1%) and tetracycline (88·2%) were observed. High (89·7%) multi-drug resistance was observed to 3-7 of the tested drugs. 5. Components of the B. fragilis group were sub-dominant in broiler faecal microbiota, with a different species pattern compared with human and high antimicrobial multi-drug resistance.
A cross-sectional study was conducted from November 2016 to April 2017 to estimate the prevalence... more A cross-sectional study was conducted from November 2016 to April 2017 to estimate the prevalence of lung worm infection in small ruminants in selected kebele and surrounding village of Eteya in Arsi zone Oromia region, Ethiopia to determine prevalence, risk factors and identifying species of lungworm in small ruminants. Simple random sampling technique was followed to select sampling frame. Fecal samples from sheep and goats of all age groups and both sexes were examined by modified Baermann technique for the extraction of larvae (L1). Fecal examination was conducted in 400 (87 goat and 313 sheep. The overall prevalence of 43% was found by fecal examination. Dictyocaulus filarial, Protostrongylus rufescens, Muellerius capillaris and mixed parasitism were identified by faecal examination with total prevalence of 14.8%, 3.3%, 16.3% and 8.8%, respectively. The higher prevalence was observed in female (46%) than male (35.1%). In female (OR =1.908, CI= 1.093 3.331) had higher odds of in...
Journal of Immunology Research
Cutaneous leishmaniasis (CL) is a major public health problem worldwide and spreads to human via ... more Cutaneous leishmaniasis (CL) is a major public health problem worldwide and spreads to human via the bite of sand flies during blood meal. Following its inoculation, the promastigotes are immediately taken up by phagocytic cells and these leishmania-infected host cells produce proinflammatory cytokines that activate other immune cells and these infected host cells produce more cytokines and reactive nitrogen and oxygen species for efficient control of leishmania infection. Many experimental studies showed that resistance to infection with leishmania paraites is associated with the production of proinflammatory cytokines and activation of CD4+ Th1 response. On the other hand, vulnerability to this parasitic infection is correlated to production of T helper 2 cytokines that facilitate persistence of parasites and disease progression. In addition, some studies have also indicated that CD8+ T cells play a vital role in immune defense through cytokine production and their cytotoxic activ...