42 research outputs found

    Study of Locating Fire Stations using Linear Assignment Method : Case Study Maku City

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    Today excess density of population in city and it is increasing growth in bulk is led to demand and attention to urban development Demand for urban development is one of the most important issues against human in future Therefore to solve this problem and obstacles safety system of city should be developed along this to cover whole city The most important problem about the services of fire stations is the inappropriate distribution of stations and restricted function area of present stations So qualities and quantities distribution of stations is investigated scientifically and professionally Using traditional methods planning fire stations for services mean wasting papers and time but today using GIS serves as a tool to create proper and effective databas

    Application of the Analytic Hierarchy Process (AHP) for Prioritize of Concrete Pavement

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    The analytic hierarchy process AHP is a structured technique for dealing with complex decisions that was developed by Thomas L Saaty in the 1980 year It provides a comprehensive and rational framework for structuring a decision problem for representing and quantifying its elements for relating those elements to overall goals and for evaluating alternative solutions The base of this model is comparing variables by pair wise by Matrix relationship In this way pair wise of the effective variables on the concrete Pavement were considered and based on relative weights the output was exten

    Zoning Zarand-Saveh watershed for artificial recharge of underground aquifers using ELECTRE method and Linear Assignment with GIS technique

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    In previous decades decision making in water management problems and selection of better option among suggested options to solve a watershed problems was only done based on economical criteria - profit in relation to cost- and on changing social and environmental criteria in to the economical criterion However today using Multi criteria decision making it is not necessary to use financial equivalent of social and environmental criteria to select the best option In fact various qualitative and quantitative criteria can be used to prioritize and select the best options for water resources management The purpose of this study is ranking the water resources potential in Zarand-Saveh watershed by two methods ELECTRE method and Linear Assignment ELECTRE method is one of the Multi criteria decision making which can compound the quantitative and qualitative criteria weight each criterion based on its importance and help decision makers to select the best option at the same time Electrical method is one of the available methods in compensatory methods In this method all options are analyzed and evaluated by non-ranked comparisons Whole stages of this method are based on coordinated and uncoordinated sets and thus it is called coordination analysi

    Selection of most appropriate area to establish soil damp for the purpose of sustainable development of water resources using TOPSIS and ELECTRE methods ( A case study: Zarand-Saveh watershed)

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    Nowadays shortage and decrease in fresh water is approximately under increased all over the world Based on the statistics published by FAO Food and Agriculture organization need for fresh water has almost become double per 21 years while useful water resources have been reduced by half in relation to 30 years ago It seems that useful water resources will become one fourth up to 2025 than useful water resources in 1960 Meanwhile danger of various pollutions for water resources frequently increased the value and importance of them Due to mentioned cases if water resources aren t managed in better way the life of human being will be threatened by the shortage of water Thus it is necessary to acquire the exact and up to date information about the condition of water resources and prediction of their situation in future in order to achieve optimum management for water resource

    From Classmates to Soulmates: Diary of an Educational Reincarnation in Critical Reflection-based Iranian EFL Classroom

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    The study narrated here is the diary of a community whose participants attended the class while they were going through critical reflection process, the process in which everyone experienced the same pathway of learning English. This Ethnographic project highlighted the life of five EFL Learners who were from the same ethnic background in Homa Town in Tehran. This was realized through observation and participation in learners’ activities while the researchers were interviewing individuals on several occasions. In this paper the authors animate the steps they followed as every one of the learners developed as a whole instead of just academically. This happened when they were all treated as unique, important people whose spiritual growth, and self-knowledge in life were evolved

    The Role of Rhetorical Science in Exegesis of the Qur’an (A Case Study of Metonymy and Allusion in At-Tibyan by Sheikh Tusi and al-Kashshaf by Zamakhshari)

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    Metonymy is one of the most significant artistic figures of speech in every language which represents the speaker’s skillful and effective discourse. The holy Qur’an as a miracle scripture appropriate for the linguistic requirements of the audience has made use of metonymy figures of speech. Given the importance of Qur’anic metonymy figures and the role of commentators’ rhetorical views on understanding this holy book, it seems necessary to conduct a research in this regard. Comparing two major and valid exegetic books in the Muslim world –At-Tibyan and Kashshaf-, the present study attempts to analyze the effect of rhetorical views of Sheikh Tusi and Zamakhshari on Qur’anic metonymy and allusion and their style in expressing them as well as their effect on the exegesis of Qur’anic verses. The results of this study which is conducted through descriptive analysis revealed that Sheikh Tusi and Zamakhshari have paid attention to the difference between metonymy and allusion, various figures of metonymy, necessity of metonymy, and the role of context in discovering allusive meanings. In some case, Zamakhshari has been under the influence of Sheikh Tusi; however, his discussions are more comprehensive on the exegesis of verses related to divine features in which literal meaning has no place, as well as on arguments related to the purpose of using metonymy and allusion

    Partial Replacement of Limestone and Silica Powder as a Substitution of Cement in Lightweight Aggregate Concrete

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    With increasing trends towards the broader usage of concrete and warning depletion of natural resources of aggregates, it seems reasonable to find mineral additives or binding materials of different types as ingredient of concrete.  Accordingly, wide usage of light weight concrete lies on some main structural applications as reduction of total dead, seismic loads, environmental pollution, and labour cost. This paper tries to investigate the properties of light weight blended concrete containing lime stone powder (LP), micro-silica (MS), pumice, and leca in various proportioning rateing as a partial replacements of cement. Utilization of these additives on the compressive strength, tensile strength, water absorption coefficient, acid resistance, and impact resistance examined experimentally in various curing conditions at the ages of 7 and 28 days to evaluate the combined effect of micro-silica and lime stone incorporation on strength and durability properties of light weight concrete, along with introduction of optimum replacements. For this purpose, 10 lime-stone based concrete mixtures were prepared with proportions from 0 to 20%, and constant values of 10% micro-silica and w/c ratio. From the results, it was indicated that addition of lime stone powder in concrete reduces short-term properties as well as the compressive strength. Optimum levels of powder replacements can serve as sustainable and durable concrete, also environmental and economic benefits

    Experimental Evaluation of Eco-friendly Light Weight Concrete with Optimal Level of Rice Husk Ash Replacement

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    Concrete is a versatile and cost-effective building material whose properties are influenced by age, curing condition, and installation. A number of studies deduced that there should be an association of benefits encouraged the use of partial replacements of cement seems to improve strength and durability properties of concrete. This paper presents a framework for feasibility assessment and determination of optimum percentage of rice husk ash (RHA) replacement. Five mix plans with RHA replacing ratio of 0-20% and constant micro- silica value by 10% were prepared. Tests results indicated that compressive strength increased by 20% with an increase in RHA up to 15%. The similar trend was observed in mix designs made of cement replaced by RHA up to 20% in water absorption coefficient measurement. Higher chloride ion penetration was observed in mix designs containing 25% RHA compared to that of conventional concrete. Mixes developed a slightly higher impact resistance than the control mix

    A Qualitative Investigation of Language Learners’ Epistemological Beliefs: Core Dimensions and Development in Focus

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    Language Learners’ epistemological beliefs (LLEBs), as their conceptions about the nature of L2 knowledge and L2 knowing, are among the determinants of the route and the outcome of language learning; however, research into their dimensional and developmental nature is at the premium. This qualitative study was designed to (a) unravel the dimensions of LLEBs, and (b) delineate data-driven dimension-specific developmental patterns. Following “maximum variation” sampling, data obtained in 30 one-to-one semi-structured oral interviews were subjected to directed qualitative content analysis to detect utterances related to L2 knowledge and knowing conceptions. Seventeen themes each reflecting beliefs about one of epistemological beliefs’ core dimensions (i.e., knowledge certainty: N=4; simplicity: N=4; source: N=5; and justification: N=4) were extracted, and inter-coder agreement ensured. In the second phase, data obtained in three separate focus-group interviews from another 18-member sample selected via “critical case sampling” were analyzed to sketch differential dimension-related beliefs, if any, and sketch possible developmental paths. The results showed clear distinctions across the three sub-samples in terms of all the 17 LLEBs’ themes extracted in phase 1, roughly reflecting Baxter Magolda’s (1992) four-point epistemological development continuum from “absolute knowing” through “transitional knowing” and “independent knowing” to “contextual knowing.” The findings indicate the dimensionality and developmental nature of LLEBs, and the alignment of LLEBs with research on domain-general epistemology
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