scholarly journals Problem of selection of suitable geosynthetics for the strengthening of subgrade in road construction, selection of assessment criteria

2021 ◽  
Vol 20 (2) ◽  
pp. 93-101
Author(s):  
Elżbieta Szafranko

2017 ◽  
Vol 7 (1.2) ◽  
pp. 239 ◽  
Author(s):  
B. Suresh Kumar ◽  
Deepshikha Bharghava ◽  
Arpan Kumar Kar ◽  
Chinwe Peace Igiri

Due to the immense growth of Internet usage, the point of convergence has moved from physical to the web. The size of the web is increasing at a very fast pace to cater to the fast-evolving needs of the businesses, governments, and societies. However, selecting or identifying the best website is challenging. The practical issue to solve the problem comprises two parts. The first part is to identify the assessment criteria for appraising websites. Second is to evaluate the websites in the context of these assessment criteria and screen them to address a specific need. However, this objective is extremely complex and computationally extremely expensive. This research proposes an approach to identify websites from the Internet. The proposed integrated approach uses the Henry Garrett ranking method and cuckoo search algorithm for ranking and selection of websites for planning digital marketing campaigns.


Author(s):  
Randy B. Foltz ◽  
Mark Truebe

Selection of suitable locally available materials to build strong and durable roads with aggregate surfaces is desired to minimize road construction and maintenance costs and to minimize the detrimental effects of sedimentation. Eighteen aggregates were selected from local sources in Idaho, Oregon, South Dakota, and Washington State. Aggregate was placed in shallow metal frames and compacted to simulate a forest road. The levels of runoff and sediment from a highintensity, long-duration simulated rainstorm were measured. The material tests selected for use in the study included ones that define the basic characteristics of the aggregate, along with a number of tests intended to predict susceptibility to erosion. Each of the tests was statistically evaluated to identify those that best predicted the perceived aggregate quality. The two best indicators of aggregate quality were the results of the sand equivalent test and the P20 portion of the Oregon air degradation test. The best indicator of either runoff or sediment production was the fraction passing the 0.6-mm sieve. Acceptable aggregates, both those of good quality and those of marginal quality, exhibited a 2-order-of-magnitude range in both runoff and sediment production.


2019 ◽  
Vol 1 (1) ◽  
pp. 55-63
Author(s):  
Erozeki Sialagan ◽  
Rahmat Widia Sembiring ◽  
S Suhada

This study aims to assist relevant parties in making selections in the selection of olympic students at the Elementary School Level in Gunung Maligas District. The method used is the AHP method. Source of research data obtained by observing and interviewing the school. The research data samples were four elementary schools in Gunung Maligas sub-district, among others: 1) SDN 096780 Kampung tape, 2) SDN 097806 Kabupaten Simalungun, 3) SDN 091263 Karang Sari and 4) SDN 098145 Karang Sari. The assessment criteria used as a basis for assessments include: Olympic Experience, Intelligence, Academic Ability (Science Report Score or Mathematics) and Olympic Capabilities. The results of the study showed that alternative 4 with a value of 0.356 (first rank) was recommended by Olympic student participants.


1914 ◽  
Vol 77 (1) ◽  
pp. 1123-1154
Author(s):  
P. E. Green ◽  
E. H. Thomes ◽  
S. Whinery ◽  
W. W. Crosby ◽  
Mark Brooke ◽  
...  

2012 ◽  
Vol 58 (4) ◽  
pp. 463-476 ◽  
Author(s):  
A. Lesniak ◽  
E. Plebankiewicz ◽  
K. Zima

AbstractOne of the contract awarding systems in public sector in Poland is the Design & Build system. In this system, a client concludes a contract agreement with only one company, a contractor, in order to carry out both design and construction of works. While deciding on this form of delivery of a public project, the client is obliged to conduct a single proceeding aiming to select the contractor. In this paper, public works contracts awarded in the D&B system in Poland are analysed, whilst attention was put on the contracting modes and assessment criteria. The results are assessed against the experience of other countries and recommended methods for selection of the Design and Build contractor.


Author(s):  
Igor Ilge

Problem. Effective use of motor graders is impossible without the use of automatic control systems, especially in modern conditions of large volumes of road construction. However, among the large number of samples of such systems, which differ in various parameters, it is impossible to make an appropriate choice without a scientifically sound approach, taking into account the set of their characteristics. It was found that these systems are characterized by a large set of parameters, with the values of some of them unknown, and the reliability of the values of many parameters is questionable, i.e. the choice must take place in conditions of fuzzy information. The methods of choosing alternatives in conditions of uncertainty described in the literature, in particular when choosing technical systems based on Analytic Hierarchy Process and fuzzy set theory, are analyzed and the latter is taken to develop a method of choosing a motor grader ACS. The goal of the work is to increase the efficiency of motor graders in road construction due to the appropriate choice of ACS. The methodology of constructing the method is the theory of fuzzy sets. The economic, technical-operational and ergonomic groups of criteria for choosing a motor grader ACS are determined and substantiated. The construction of the method was performed to select the ACS in the 3D class. As the alternatives, the systems which are the leaders of this segment were chosen. The above criteria are a set of criteria. The solution to the problem of choice is an alternative that best meets the requirements of the whole set of criteria. The results of the work are the development of a method of fuzzy multicriterion analysis for the selection of a motor grader ACS in the class of 3D systems. Originality lies in constructing the method of choosing a motor grader ACS in conditions of fuzzy information on the basis of reasonable criteria. The practical value is the fact that the use of the developed method will allow to make a scientifically sound choice of the ACS of a motor grader taking into account the whole set of criteria.


2019 ◽  
pp. 27-40
Author(s):  
Anutra Wannaviroj ◽  
Thavivongse Sriburi

This paper describes the selection of assessment criteria to assess agricultural water management schemes for on-farm ponds to support sustainable rain-fed agriculture, guided by the New Theory of His Majesty King Bhumibol Adulyadej. The candidate set of criteria was obtained from several international and national sources related to sustainable rain-fed agriculture and the New Theory. The criteria were reviewed and modified by the expert team based on the goals of the New Theory in order to define an initial site-specific set of criteria that conform with the context of socio-topographical conditions of Thailand. The team screened,assessed, and prioritized the criteria using three multiple criteria decision-making (MCDM) techniques- ranking, rating and pairwise comparisons- in order to attain the final locality set of the assessment criteria. The process resulted in selection of a set of three criteria, with 15 sub-criteria. This final locality set of criteria was used to conduct a sustainability assessment of agricultural water management schemes of on-farm ponds. Criterion 1 (The pursuit of self-reliant agriculture based on limited agricultural land and water resources) was given the highest weighting, followed by Criterion 3 (The pursuit of sustainable rain-fed agriculture) and Criterion 2 (Self-sufficiency of household daily consumption and income generation). At the sub-criterion level, sub-criterion 1.1 (Land use efficiency) and sub-criterion 1.5 (Water use efficiency) of Criterion 1; sub-criterion 2.1 (Food self-sufficiency) of Criterion 2; and sub-criterion 3.1 (Mixed farming) of Criterion 3 were given the highest weightings. Further research is needed to examine the applicability and reliability of the assessment criteria in field situations.


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