International Journal of Innovative Science and Modern Engineering最新文献

{"title":"The Influence of Procurement Systems on Construction Projects in Rwanda","authors":"Musoni Nicolas, Abednego Gwaya, Wanyona Githae","doi":"10.35940/ijisme.e1200.036520","DOIUrl":"https://doi.org/10.35940/ijisme.e1200.036520","url":null,"abstract":"The Rwandan construction industry contributes up to 7.4% of the total GDP of 2010, yet its performance within the economy has been, and continues to be, very poor due to cost overruns resulting to abandonment of of projects. system procurement is still dominant in the Rwandan construction sector and this may likely continue to be the trend. Delay in project execution is a major problem in the Rwandan construction industry. This occurs both in small and large projects. Virtually, all the projects executed over the years in Rwanda were faced with problem of delay in delivery. The primary objective of the study is to analyze the influence of procurement systems on construction projects. Specific objectives are; to identify the extent to which various procurement systems commonly used by project managers in Kigali for construction projects, to examine when The traditional design-bid-build influence of procurement systems encountered employing various procurement systems for construction projects, to assess the merits and demerits of the various procurement systems on construction cost, develop a framework of procurement factors influencing delays. For the research design and methodology, the research will be carried out in Energy Development Corporation Limited as one of the institutions highly involved in the procurement and execution of construction works in Rwanda. The descriptive and explanatory approaches were done during the research and qualitative and quantitative methods were considered as well. About the sample size and target population, the researcher considers 21 as target population and census technique was used. Data analysis used spread sheets, SPSS and other statistic graphs and tables. The data The type of validity used by the researcher for this study was the content validity. For the reliability of the data collection instrument, Test- retest reliability was used. It is a measure of reliability obtained by administering the same test twice over a period of time to a group of individuals. The findings guided the researcher after analyzing data, to systems collection instruments were questionnaires. observe the influence of procurement on construction projects in Rwanda.","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128226371","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}

{"title":"Feature Descriptors Applied to Slag Characterization on Casting Process","authors":"J. Romero-González, A. Herrera-Navarro, Hugo Jiménez-Hernández","doi":"10.35940/ijisme.d1193.016420","DOIUrl":"https://doi.org/10.35940/ijisme.d1193.016420","url":null,"abstract":"Vision systems are increasingly entering the field of metallurgy, carrying out operations where a human operator is not possible due to the process conditions. The purpose of these systems is the monitoring and control of the process to improve the quality and manufacturing of the products. Nevertheless, the amount of slag, the presence of gases and high temperatures are the main problems that make this task difficult. In this proposal the characterization of the slag is treated, through the analysis of the light changes with the functions of Fourier and Gabor, which allow to identify or locate the location of the slag in the material, so that, in future works the slag It can be segmented, measured or used to detect the level of the metal in the refractory. In addition, results obtained when evaluating sensitivity and precision curves are presented, with which the information recovered by the algorithms is evaluated.","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114916501","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}

{"title":"Real Time IoT Application for Classification of Crop Diseases using Machine Learning in Cloud Environment","authors":"Tanilal Bhavsingh Thakur, Amit Mittal","doi":"10.35940/ijitee.d1186.016420","DOIUrl":"https://doi.org/10.35940/ijitee.d1186.016420","url":null,"abstract":"India is an agricultural country. A total of 61.5% of the people cultivate in India. Due to lack of agricultural land and change of weather, many types of diseases occur on crops and insects are born. Therefore, the production of crops is coming down. To reduce this problem, Internet of Things technology will prove to be an important role. In this system, a sensor network will be created on agricultural land using Raspberry Pi 3 model. The images of the crops will be taken by sensor cameras and these images will be sent to the cloud server via Raspberry Pi 3 model. In this proposed methodology, various image processing techniques willbe apply on acquired images for classification of crop diseases using k-means clustering algorithm with unsupervised machine learning. This paper will also shows the method of image processing technique such as image acquisition, image pre-processing, image segmentation and feature extraction for classification of crop diseases. In bad natural environment, the farmers can produce quality crops and people will get healthy food by this proposed methodology and make more profit. In real time treatment of crop diseases, farmer will increase quantity of their crops","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134113027","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}

{"title":"Fog Computing: Terminologies, Architecture and Challenges","authors":"Harsimratpal Singh, Chetan Marwaha","doi":"10.35940/ijitee.c1162.116319","DOIUrl":"https://doi.org/10.35940/ijitee.c1162.116319","url":null,"abstract":"Internet of things (IOT) made the world connected to each other through Internet. These gadgets are important to store data, to exchange data and to collect data from other sources. These devices are not perfectly capable to cooperate with data centers directly based on some parameters such as latency, resource availability, load balancing, scheduling and security. Fog computing (FC) paradigm is introduced to overcome the problems of these parameters. As it cooperate with centralized data centers. This paper presents a survey on Fog computing terminology. Here, the term fog computing has been discussed. Further its architecture, its challenges are highlighted. An overview of further research work related to dynamic job scheduling has been discussed.","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133677681","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}

{"title":"Silicon Carbide MESFET High Frequency Oscillator for Microwave Applications","authors":"B. Reddy","doi":"10.35940/ijisme.a1141.096219","DOIUrl":"https://doi.org/10.35940/ijisme.a1141.096219","url":null,"abstract":"The Gouriet oscillator is mainly dealing with 4H-SiC metal semiconductor field effect transistor is fabricated with HPSI substrate and passive integrated elements are based on design for demand of the required function of frequency 1GHz. This high frequency or temperature oscillator is operated from 30 to 200˚C, the gain of the delivered power of 21.8dbm at the frequency of 1GHz and the temperature of 200˚C. The oscillator transistor output response is at 200˚C, the improved percentage is 15%. This output response of the difference in between the frequency around the vary of temperature is less than 0.5%.","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131309795","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}

{"title":"Investigation on Construction Solid Wastes Management within Building Sites Environment in Kigali City","authors":"F. Habineza, J. Nsengiyumva, D. A. Gwaya, Prof. Stephen Diang’a","doi":"10.35940/ijisme.a1135.086119","DOIUrl":"https://doi.org/10.35940/ijisme.a1135.086119","url":null,"abstract":"The largest volume of construction work in the country is mainly concentrated in this city and improper demolition of construction waste cause improper handling to construction sites. The general objective of the study will investigate on the construction solid and demolition waste management in Kigali City. A cross sectional survey among the construction companies was conducted from 60 contractors by purposive sampling. The research targeted all construction practitioners in various active sites of Kigali city. Sources of data for this study were obtained through questionnaires, interviews and site surveys. Descriptive statistics will be applied to analyze quantitative and qualitative data through SPSS 16 and STATA 13.0 computer package. Analysis of Variance was used to test the relationship between Methods of CSWM and its types of demolished waste by level of satisfaction. The key findings showed that the most construction solid waste identified on construction sites were woods; scrap metals; cement; bricks and trees respectively and the construction companies suggested that those wastes are available on their construction sites and they should be demolished properly. The second category of CSWM identified were insulation; nails; plaster; rocks; dirt and asbestos respectively according to their means and standard deviation. Furthermore, for thermal treatment, the study findings concluded that there is open burning and the respondents were fairly on the adopted methods for waste treatment. Secondary there are incineration and Pyrolysis which are used to treatment waste from construction sites and all respondents were not satisfied on their application to treat waste. Lastly the study findings concluded that there are gasification and is not usually used as the heads of sites were very unsatisfied. The cost associated with SWM for practitioners and it is ranged from 6,000,000Frws-9,000,000Frws used cost of Vegetation/ top soil (site clearance), cost of reinforced concrete, cost of Scrap metals, cost of rocks and municipal waste respectively to clean the construction environment.The next category of cost was valued in ranged of waste costing above 3,000,000Frws-6,000,000Frws and those were the cost of bricks/ tiles demolition, cost of wooden materials and other non inert waste demolition, cost of debris of pipes demolition, cost of sewage demolition and cost of chemical waste (waste oil, lubricants, paints& solvents) demolition from the construction sites respectively. The revenues associated on CSWM ranged from 6,000,000Frws -9,000,000Frws for Vegetation/ top soil (site clearance), Reinforced concrete, Scrap metals, Wooden materials and other non inert waste and Municipal waste management that may generate high level of incomes; and from 3,000,000Frws-6,000,000Frws for Rocks, Sewage and Chemical waste (waste oil, lubricants, paints& solvents) waste","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131223317","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}

{"title":"Design of slit loaded Planar and Curved Patch Antenna","authors":"Sumanta Kumar Kundu *, P. Singhal","doi":"10.35940/ijisme.a1139.086119","DOIUrl":"https://doi.org/10.35940/ijisme.a1139.086119","url":null,"abstract":"Slit loaded circularly polarized patch antenna embedded on planar structure and curvature structure were investigated. The curvature effect on slit loaded patch antenna determines the limiting value of radius of curvature to obtain circular polarization. At a certain radius of curvature (ROC) around 131.3 mm, circular polarization have been obtained with axial ratio band width around 15 MHz and return loss bandwidth around 56 MHz compared with 17 MHz and 65 MHz as that of planar structure. The beam width responsible for coverage of planar patch are 104 and 107 degree with respect to 84 degree and 124 degree of curved patch at phi = 0 and 90 degree respectively.","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115799214","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}

{"title":"Application of Value Management in Conception of Construction Projects in Rwanda","authors":"Dick Rwamuhinda, D. A. Gwaya, Dr. Githae Wanyona","doi":"10.35940/ijisme.c1155.106319","DOIUrl":"https://doi.org/10.35940/ijisme.c1155.106319","url":null,"abstract":"Value Management (VM) and Value Engineering (VE) are techniques concerned with defining, maximizing and achieving “value for money”. It should be noted that VM is not about reducing the cost but about adding value and where necessary the cost can be added to achieve value. Despite its proven significance in securing maximum output from limited resources, this approach is not a common practice in Rwanda’s construction Industry. This study therefore defines VM and describes all the processes and techniques involved in it. The merits and demerits of VM process in construction projects are discussed in details and relevance of its uses is discussed and recommended in consideration of the scope and complexity of the projects as well as the risks involved. While the benefits of a value management review are often perceived in terms of improved quality and reduced cost, this report discusses the exercise as a functional mechanism to measure value, taking into account monetary and non-monetary benefits and thus demonstrating value for money. While the author has not been able to obtain relevant literature on VM practice in Rwanda, It can be deduced from the review of the related literature that most of the evaluation techniques conducted for construction projects in developing world have mostly relied on evaluation of project performance in terms of cost, quality, delivery and progress. Since project evaluation is carried out after the work has been undertaken, the output of the analysis will just give the client an indication or a good understanding of the project performance. Such evaluations only reveal the competence or incompetence of the project participants instead of providing value for money which is addressed by VM practice which is an ex-ante analysis that takes into consideration of all value parameters. The study used a quantitative survey method of research to obtain responses from professional practitioners in construction industry in Rwanda. The sample size of 115 were selected from members of professional practitioners in the construction industry out of which 106 members were responsive. Finally, it is concluded that VM approach is not used in construction industry in Rwanda and recommended that VM practice be adopted in construction industry in Rwanda as a mandatory requirement for conception of all construction projects with a budget of $20M and above.","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123492875","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}

{"title":"Finite Element Method Analysis Applied to Different Foundations Structures Systems","authors":"Dr. Eng. Guillaume Hervé poh’sie*, Eng. Linda Kevine Guiameugne Guabiapsie, Eng. Gabrielle Laure Djeukoua Nathou, Eng. Giuseppe Cardillo, Prof. Carmelo Majorana","doi":"10.35940/ijisme.c1289.087321","DOIUrl":"https://doi.org/10.35940/ijisme.c1289.087321","url":null,"abstract":"In the conventional static analysis of building frames, the base is idealised on rigid supports and the building is subdivided into three parts namely, the superstructure, the foundation and the ground soil, before design. In real life situations, the soil underneath the building undergoes deformations which may alter the performance of the structure. In this paper, it is studied the effect of soil type and foundation type on the response of a building frame system with both fixed base and flexible base. The Winkler model of soil-structure interaction is adopted to study the influence of soil flexibility and foundation rigidity on a 4 storey RC building with a regular plan resting on three types of soils namely, the light peat marshy ground, wet clay and medium gravel with fine sand. Three types of foundations are considered in the study: isolated footings, tied foundation and the raft (with and without overhangs) foundations. Winkler model is developed using springs by Finite Element Method in SAP2000. The settlement, the bending moment, the shear force and the axial force are the parameters placed forth for the comparative study. Results obtained reveal an increase in the response of the structure with respect to the soil flexibility and foundation rigidity.","PeriodicalId":356562,"journal":{"name":"International Journal of Innovative Science and Modern Engineering","volume":"302 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134221121","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}