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Benchmarking the Robustness of Cellular Up-Links in Automatic Weather Station Networks

Communications and Network 2018年第3期10卷 78-92页

作者： Emmanuel A. Kondela amos Nungu Joseph W. Matiko Julianne S. Otim Bjorn Pehrson School of Computing and Information Technology Makerere University Kampala Uganda Department of Computer Studies Dar es Salaam Institute of Technology Dar es Salaam Tanzania Telecommunication Systems Lab Royal Institute of Technology Kampala Sweden

We present a problem for benchmarking the robustness of cellular up-links, in an automatic weather station (AWS) testbed. Based on the problem, we conduct a small-scale measurement study of robustness, where the AWS is equipped with four (4) cellular modems for weather data delivery. The effectiveness of up-links is challenging because of overlapping spatial-temporal factors such as the presence of good reflectors that lead to multi-path effects, interference, network load or other reasons. We argue that, there is a strong need for independent assessments of their robustness, to perform end-to-end network measurement. However, it is yet difficult to go from a particular measurement to an assessment of the entire network. We extensively measure the variability of Radio Signal Strength (RSSI) as link metric on the cellular modems. The RSSI is one of the important link metrics that can determine the robustness of received RF signals, and explore how they differed from one another at a particular location and instant time. We also apply the statistical analysis that quantifies the level of stability by considering the robustness, referring short-term variation, and determines good up-link in comparison to weak one. The results show that the robustness of cellular up-links exists for an unpredictable period of time and lower than one could hope. More than 50% of up-links are intermittent. Therefore, we plan to extend our work by exploring RSSI thresholds, to develop a classification scheme supporting a decision whether a link is either intermittent or not. This will help in normalizing the level of stability, to design the RSSI estimation metric for the robust routing protocol in weather data networks.

关键词： Cellular Links Robustness Automatic Weather Station Terrestrial Wireless Links Intermittent Links

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Surgical Management of a Giant Hydrocele of the Vagina in Adult

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Surgical Science 2020年第9期11卷 274-280页

作者： Anzoua Kouakou Ibrahim Kouakou Kouame Bernadin Traore Mamadou Gnangoran Koffi Marcelin Leh Bi Kalou Ismael N’Dri Ahou Bernadette Ekra amos Kouakou amos Bamba Inza Avion Kouassi Patrick Assohoun Krahibouet Toussaint Lebeau Roger Diane Bamourou General and Digestive Surgery Department Bouaké Hospital and University Center Bouaké C&ocirc te d’Ivoire General and Digestive Surgery Department Yopougon Hospital and University Center Yopougon C&ocirc te d’Ivoire

Introduction: Vaginal hydrocele is an amber-colored, sterile collection found between the parietal and visceral testis. It is said to be giant when it is larger than the patient’s skull or when it contains more than two liters of liquid. Objective: To report our method and the result of the surgical treatment. Observation: The authors reported an observation of a 50-year-old patient who consulted for a painless large left bursa. Clinical and paraclinical investigations, in particular scrotal ultrasound, have made it possible to diagnose a giant hydrocele of the vagina. The patient had surgical treatment which consisted of resecting of the vagina with hemostatic suture of the resected vaginal slice. The post-operation effects were not complicated. After a six-month setup, we did not notice any recurrence. Conclusion: Resection of the vagina with hemostatic suture of the resected vaginal slice in case of giant hydrocele could certainly give good results.

关键词： Giant Hydrocele Surgical Treatment

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Compromises in Vehicle Suspension Design

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Journal of Mechanics Engineering and Automation 2012年第7期2卷 441-445页

作者： Emmanuel I. Bello Isaac T. Ogedengbe amos Osasona Adebisi O. Akinola Department of Mechanical Engineering The Federal University of Technology Akure Nigeria

When designing vehicle suspension systems, compromises are usually made when setting the range of values for spring stiffness and damping constant. Suspension parameters are set depending on the operational requirements of the market. Passenger car for example, would require high quality damping while off road vehicle requires high spring stiffness setting. A quarter vehicle suspension model has been used to study the suspension transmissibility in handling and ride at various frequency ratios. The results obtained show that as the frequency ratio increases, transmissibility for handling reduces with increasing suspension stiffness and increases as the damping constant is increased. On the other hand, transmissibility for ride deteriorate as the spring constant is increased but approaches the ideal as the damping constant is increased. The dynamic magnification of the sprung masses reduces while that of the unsprung masses improves as the frequency ratio is increased.

关键词： Sprung masses unsprung masses ride handling transmissibility spring stiffness damping constant frequency ratio.

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Phytochemical screening and GC-MS determination of bioactive constituents from methanol leaf extract of Senna occidentalis

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Journal of Coastal Life Medicine 2015年第12期 992-995页

作者： Aisha Mohammad Ibrahim Bashir Lawal Ndababru amos Tsado Abubakar Awwal Yusuf Adisa Mohammed Jimoh Department of Biochemistry Tropical Disease Research UnitFederal University of TechnologyPMB 65MinnaNigeria Department of Basic and Applied Sciences Niger State PolythechnicZungeruNigeria Department of Biochemistry Ibrahim Badamasi Babangida UniversityPMB 11LapaiNiger StateNigeria Department of Chemistry Ibrahim Badamasi Babangida UniversityPMB 11LapaiNiger StateNigeria

Objective:To identify the active ingredients presented in methanol extract of Senna occidentalis(***).Methods:Dried powdered leaves of *** were extracted with methanol by Soxhlet extraction and the extract was subjected to preliminary phytochemical screening by using standard procedure and *** chromatography-mass spectrometer(GC-MS)analysis was performed by comprising a GC-MS(model:QP2010 Plus Shimadzu,Japan)comprising an AOC-20i auto-sampler and gas-chromatograph interfaced to a mass ***:The phytochemical study revealed the presence of tannins,alkaloids,glycoside,flavonoids,steroids,saponins,anthraquinones and phlobatannins while cardiac glycoside was not ***-MS chromatogram showed nine peaks.A total of 31 compounds were identified when the mass spectra of the constituents was compared with the National Institute Standard and Technology *** first compounds identified with less retention time(15.929 s)were n-hexadecanoic acid,octadecanoic acid and pentadecanoic acid while decanoic acid,decyl ester,ether,octadecyl vinyl,oleic acid,hexyl ester,stearic acid,octadecyl ester and decyl fluoride took the longest retention time(20.600 s)for ***:The presence of these compounds in the plant extract may at least be responsible for one of the pharmacological properties of *** and thus could be of considerable interest to the development of new drugs.

关键词： Phytochemicals GC-MS Senna occidentalis Bioactive constituent Methanol extract

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Exploring the Nexus between Climate Hazards and Conflict in Lamu County: Implications for Community Adaptation Action Plans

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Journal of Environmental Protection 2023年第12期14卷 984-1005页

作者： Misiani Zachary Simeon Mwadiga Mohamed Abubakar Hindada Boneya Onyango Linet amos Okello Mohamed Rashid Dirie Monica Orero International Center for Humanitarian Affairs Kenya Red Cross Society Nairobi Kenya Kenya Forestry Research Institute Nairobi Kenya County Government of Lamu Lamu Kenya Kenya Red Cross Training Institute Nairobi Kenya

This paper investigated the complex relationship between climate change and security in Lamu County, with focus on community perceptions, vulnerabilities, and adaptation strategies. The study utilized a participatory approach involving Focus Group Discussions (FGDs) and Key Informant Interviews (KIIs) to gather insights from diverse community members. Results revealed a growing recognition of climate change as a significant factor amplifying security risks, including resource-based conflicts, food and water insecurity, pest and disease outbreaks, and rising sea levels. The analysis of historical climate data indicated shifts in rainfall patterns and rising temperatures, exacerbating these hazards. Furthermore, it underscores the need to mainstream climate change actions across various sectors for sustainable development and human security. Lamu County in Kenya faces a myriad of security challenges stemming from climate change, with the community perceiving droughts, pests, diseases, and conflicts as prominent hazards. These climatic impacts have led to crop failures, livestock losses, water scarcity, property damage, displacement, and instability. Local adaptation strategies have shown varying degrees of effectiveness, highlighting the need for community-specific and sustainable solutions. The study identified local adaptation strategies and emphasized the importance of early warning systems, informed decision-making, and mainstreaming climate change actions across sectors to enhance human security and sustainable development. However, it also acknowledges limitations in community participation and suggests future research avenues to ensure the inclusion of marginalized voices in such studies.

关键词： Kenya Climate Changes and Adaptation Pollution Climate Hazards Conflict Security Temperature Rainfall Sea Level Lamu County

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15项园艺实用技术

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云南农业 2007年第10期 17-18页

作者：谢俊华 amos Aderwa 中尼南南合作驻尼日利亚Adamawa州技术员尼方合作人员

1、提高土壤蓄水、保水能力的技术途径①整治农田和改进土壤耕作技术。通过农田坡改梯、平整土地、深耕深松、耙耱中耕、等高耕作等田间耕作管理措施，减少地表径流，增加水分入渗，多蓄纳自然降水，减少蒸发损失。

关键词：实用技术园艺土壤耕作技术耕作管理措施土壤蓄水保水能力平整土地深耕深松

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Effects of Plantain (<i>Musa species</i>) as Shade on the Growth Performance of Cocoa Seedlings in the Nursery at Ibadan, Southwest, Nigeria

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Natural Science 2014年第6期6卷 447-453页

作者： Famaye amos Olatunde Iremiren Gerald Oaikhena Akanbi Olorunfemi Sunday Ojo Ayegbonyin Kayode Olufemi Adejobi Kayode Babatunde Cocoa Research Institute of Nigeria Ibadan Nigeria

Nursery experiment was carried out at Ibadan, Nigeria between May 2004 and October 2005 to evaluate the use of plantain as a permanent cocoa nursery shade crop. Ibadan is located between latitude 07?10'N and longitude 03?52'E and lies at an altitude of about 122 metres above the sea level. The treatments consisted of six shade regimes provided by plantain spaced at 1.0, 1.5, 2.0, 2.5 and, 3.1 m apart, the control had no shade at all (open planted cocoa). Each treatment had one hundred cocoa seedlings planted in polythene bag filled with topsoil and laid out in a randomized complete block design (RCBD) in three replications. Data on vegetative growth of cocoa seedlings were taken on monthly basis, while plantain height, girth, number of leaves, bunch weight, number of fingers and market value of each treatment were evaluated. Light intensity under each of the treatment was taken using light meter. Result showed that cocoa seedlings under plantain shade planted at 1.0 m and 1.5 m apart were higher in height relative to control and other treatments considered, shade regimes provided by spacing at 3.1 × 3.1 m and 2.5 m × 2.5 m apart on the other hand produced higher values for stem diameter and leaf area respectively compared to other treatments, the least values were recorded under 1.0 m × 1.0 m apart. Seedlings under 2.5 m and 3.1 m spacing were significantly (p > 0.05) higher for these parameters than other treatments. Higher incidence of weed was also recorded from the control. Plantain bunch obtained from 2.5 m and 3.1 m apart was higher than other treatments in terms of weight, number of fingers and market value, while the control (no plantain shade) did not give any economic returns. Hence, plantain planted at spacing of 2.5 m or 3.1 m apart could be recommended to the cocoa farmers in Nigeria as nursery shade instead of conventional method of using bamboo and palm fronds yearly without any additional economic return.

关键词： Musa Species Evaluation Plantain Cocoa Nursery

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BACILLUS WELCHII INFECTION IN CASES OF ABORTION

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中华医学杂志(英文版) 1933年第9期47卷 877-887页

作者： amos WONG DOROTHY HUIE WONG Department of Obstetrics and Gynecology and Department of Bacteriology and Immunology Peiping Union Medical CollegePeiping.

From both clinical and bacteriological points of view cases ofabortions complicated with B welchii infection as seen in the PeipingUnion Medical College Hospital are *** all the patients of the gynecological and obstetricalservice harbour *** in their gastro-intestinal tract although thedegree of toxicity varies in different patients as well as in the samepatient at different *** vaginal swabs taken for culture from cases of 54 normal deli-very were positive for *** in only two cases or 3,7 per *** was not considered to be a normal inhabitant of the vaginabut a faecal *** perineal catgut sutures were removed for culture from 21unselected normal delivery cases at various periods during their firstten days in the hospital after delivery,and 10 were positive for *** degree of toxicity of the cultures corresponded well withthe toxicity of the cultures obtained from stool specimens of the *** 15 or 50 per cent of the last consecutive 30 cases of abortioncoming into the hospital we found *** in the genital tract.8 of17 swabs from vagina,4 of 10 swabs from cervix,1 of 7 swabs fromuterine cavity and 9 of 13 specimens from placental tissue were *** degree of toxicity agreed at large with the toxicity of thestrains isolated from the rectal *** the cases of abortion infected with *** do notnecessarily manifest alarming clinical *** mild cases,thereis no fever,increase of pulse rate,local tenderness or increase of *** severe cases the symptoms were often overshadowed byseptic conditions produced by other pyogenic organisms such asstreptococcus or *** symptoms,such as fishyodor,dark coloured discharge;gas bubbles,subcutaneous emphysemawere rarely *** such symptoms are present,the patient as arule wilt die in spite of all forms of *** for treatment in mild cases no special therapy is *** ra

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Floristic Diversity in Forest Management Units: Implications for Biodiversity Conservation in FMU 09-025

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Open Journal of Forestry 2024年第3期14卷 327-345页

作者： Agbor James Ayamba amos Fang Zeh Kamah Pascal Bumtu Ndjounguep Juscar Mfonden Poumie Mounir Nkenfack Achey Djike Department of Forestry and Wildlife University of Buea Buea Cameroon Ajemalebu Self Help Kumba South West Region Cameroon Department of Geography University of Buea Buea Cameroon School of Mining University of Ngaoundere Ngaoundere Cameroon Department of Forestry and Wildlife University of Dschang Dschang Cameroon Institute for Agricultural Research for Development (IRAD) Yaounde Cameroon

The assessment of floristic composition and diversity is very important in forest management units. This study sets out to determine the species diversity and implications for biodiversity conservation in FMU 09-025 of the Campo Ma’an National park, South Region of Cameroon. Due to human activities in the area, the study site was divided into two Blocks (A and B). The transect method was employed in data collection. A total 14 long transects were established parallel to each other in blocks at a distance of 3 km apart, 8 transects in Block A and 6 Transects in Block. In each transect, plots of 20 × 500 m were established at intervals of 500 m. Within each plot, all individual trees ≥ 10 cm were identified, measured, and recorded. The DBH of all trees were measured at 1.3 using the DBH meter tape. The height of trees was measured through estimation (average estimates of all field researchers). Results revealed a total of eight thousand one hundred and twenty four (8124) individual plants with DBH ≥ 10 cm in the entire study area. From this number, 5113 tree stems ≥ 10 cm were identified and measured in Block A. This belongs to 216 species in 47 families. In block B a total of and 5011 stems were identified and measured. This belongs to 239 species in 47 families. Fabaceae, Annonaceae, Euphorbiaceae and Rubiaceae were found to be the most dominant plant families in the study site. Erythrophleum ivorense, Lophira alata, Dialium bipindense, Musanga cecropioides, Alstonia boonei, Pterocarpus soyauxii, Guibourtia ehie, Staudtia kamerunensis, Desbordesia glaucescens, Sacoglottis gabonensis were found to be the most dominant plant species. 41 species are of conservation concern according to the IUCN global Red List 2023 and IUCN local status. These species are considered species with high-priority for conservation. We have 6 endangered species, 11 near Threatened species, and 25 vulnerable species. There was no significant difference in species diversity in the two Blocks.

关键词： Composition Floral Diversity FMU Conservation Concern

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PREGNANCY IN A DOUBLE UTERUS

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中华医学杂志(英文版) 1933年第1期47卷 61-65+118-121页

作者： amos I.H.WONG Department of Obstetrics and Gynecology Peiping Union Medical CollegePeiping.

With the increase of knowledge in obstetrics and gynecology andespecially owing to the introduction of hysterosalpingography,con-genital anomalies of the uterus such as rudimentary,infantile,unicor-nuate,bicornuate,double or septate,and bifid uterus,are more andmore often *** one studies the process of how the uterus isformed,one often wonders why there are more normal than *** of deformity undoubtedly have their influence on theproportion of these cases which are sterile,or abort,or carry to

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