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《乐观者的女儿》中的女性关怀伦理解读
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作者 李英姿 《长春工程学院学报(社会科学版)》 2015年第3期96-98 103,共4页
分析指出,女性关怀伦理学建立在女性主义基础之上,并随着女性主义的进步而不断发展、完善。从女性关怀伦理学的视角,从伦理关照下的贝基和缺乏关怀伦理的法伊两个角度,探讨造成两位女性不同命运的缘由,从而指出关怀伦理秩序是建立和谐... 分析指出,女性关怀伦理学建立在女性主义基础之上,并随着女性主义的进步而不断发展、完善。从女性关怀伦理学的视角,从伦理关照下的贝基和缺乏关怀伦理的法伊两个角度,探讨造成两位女性不同命运的缘由,从而指出关怀伦理秩序是建立和谐社会的根本。 展开更多
关键词 《乐观者的女儿》 贝基 法伊 女性关怀伦理
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Plant Regeneration of Ziziphus spina-christi by in vivo and in vitro Methods
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作者 M.H.ASSAREH H.SARDABI F.SABBAGHZADEH 《Pedosphere》 SCIE CAS CSCD 2005年第2期238-245,共8页
Christ's thorn (Ziziphus spina-christi L. Desf.) is ecologically and economically important in Iran. Since it is a cross-pollinated plant with a wide range of genetic variability, an investigation was carried out ... Christ's thorn (Ziziphus spina-christi L. Desf.) is ecologically and economically important in Iran. Since it is a cross-pollinated plant with a wide range of genetic variability, an investigation was carried out to determine the best method for mass and clonal propagation. Three vegetative methods were examined, including 1) cutting, where shoots with a 22-25 cm length and three shoot diameters were treated with two culture media; 2) layering, where air layering and trench layering treatments consisted of three growth regulators at three levels of concentration; and 3) tissue culture with nodal segments bearing axillary buds that were removed from shoots of mature trees at different seasons. Several experiments were carried out to determine the best disinfectant chemical, the best culture method, the best season, the appropriate explant characteristics and media type. Rooting was successful only on the sandy beds for cuttings with more than (S.O mm diameter. For the trench layering method, only one specimen in one replicate rooted a very small root, while for the air layering method, only seedlings with growth regulator treatments rooted successfully. The best season for explant harvesting was determined as mid summer, and among the disinfecting treatments, Ca(OCI)2 at a concentration of 0 5 g kg-1 for 20 minutes was the best. There were no significant differences for shoot weight and length with a Murashige and Skoog (MS) medium with and without a hormone. 展开更多
关键词 in vitro in vivo propagation vegetative Ziziphus spina-christi
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Synthesis of N,N-diethyl dodecyl amine and its flotation properties on bauxite
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作者 曹学锋 张丽敏 +2 位作者 胡岳华 刘长淼 欧阳魁 《Journal of Central South University of Technology》 EI 2008年第2期188-192,共5页
N, N-diethyl dodecyl amine(DEN12) was synthesized from dodecyl amine, formic acid and acetic aldehyde. The collecting property of DENI2 on diaspore, kaolinite and illite was investigated by flotation test and infrar... N, N-diethyl dodecyl amine(DEN12) was synthesized from dodecyl amine, formic acid and acetic aldehyde. The collecting property of DENI2 on diaspore, kaolinite and illite was investigated by flotation test and infrared spectrum. The results show that in the presence of 2.0× 10^-4 mol/L DEN12, the recoveries of kaolinite and illite are all higher than 78% and the recovery of diaspore is 50% in the pH range of 5.5-6.0. The mass ratio of A1203 to SiO2 in concentrate obtained from separation artificial mixture is higher than 10, suggesting that DEN12 can be used as a collector to separate the aluminosilicates from diaspore in bauxite ores at the pulp pH below 8. The measurements of the infrared spectrum approve that the action between aluminosilicates and tertiary amine collector is strong electrostatic adsorption and that of diaspore is weak electrostatic adsorption. 展开更多
关键词 reverse flotation electrostatic adsorption infrared spectrum kaolinite ILLITE DIASPORE N N-diethyl-N-dodecyl amine(DENI2)
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Heavy metals in sediments and their bioaccumulation in Phragmites australis in the Anzali wetland of Iran
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作者 Marjan ESMAEILZADEH Abdolreza KARBASSI Faramarz MOATTAR 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2016年第4期810-820,共11页
Accumulation of metals in both sediments and Phragmites australis organs was studied. Samples were collected from seven stations located in Anzali wetland, Iran. The samples were analyzed by inductively coupled plasma... Accumulation of metals in both sediments and Phragmites australis organs was studied. Samples were collected from seven stations located in Anzali wetland, Iran. The samples were analyzed by inductively coupled plasma mass spectrometry(ICP-MS). The results showed that concentration of the studied metals(except As and Cd) were higher in sediments than in P.australis organs. Metal accumulation was found to be signifi cantly(P <0.05) higher in roots than in above-ground organs of P.australis. The bioaccumulation factor(BAF) and the transfer factor(TF) also verifi ed the highest rate of metal accumulation in roots and their reduced mobility from roots to the above-ground organs. Pearson correlation coeffi cient showed signifi cant relationships between metal concentrations in sediments and those in plant organs. It should be pointed out that sediment and plant samples exhibited higher metal concentrations in eastern and central parts than in western and southern parts of the wetland. The mean concentrations of all studied elements(except for Fe, V and Al) were higher in these sediment samples than in the Earth's crust and shale. High accumulation of metals in P. australis organs(roots and shoots) is indicative of their high bioavailability in sediments of the wetland. The correlation between metal concentrations in sediments and in P. australis indicates that plant organs are good bioindicators of metal pollution in sediments of Anzali wetland. 展开更多
关键词 transfer factor bioaccumulation factor aquatic plant phytotoxic level trace elements
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Age Estimation of Qash Qooly Valley in Dokan Vicinity, North Iraq Using Exposure Age Determination Method
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作者 Varoujan K. Sissakian Nadhir Al-Ansari Sven Knutsson 《Journal of Civil Engineering and Architecture》 2015年第1期90-103,共14页
Qash Qooly valley runs parallel to Pera Magroon, Sara and Surdash anticlines, almost in SE-NW trend, and merges with the Lesser Zab River 9 km southeast to Dokan town. Before its development, it was a large basin with... Qash Qooly valley runs parallel to Pera Magroon, Sara and Surdash anticlines, almost in SE-NW trend, and merges with the Lesser Zab River 9 km southeast to Dokan town. Before its development, it was a large basin with width ranges between 2-3 km, which was filled during Pleistocene or may be Late Pliocene by different types of sediments. The presence of the calcrete on the top indicates a wet period that has lasted for a long time as indicated from the thickness of the calcrete and alluvial fan sediments. The age of Qash Qooly valley was estimated using the exposure age determination method. The type of the sediments, their thicknesses, and erosion intensity and sediments' dens dissection by rills were the main features used. This study concluded that the age of the basin is Pliocene--Late Pleistocene, whereas the valley started to be developed during uppermost Late Pleistocene and is still active in shifting its course. 展开更多
关键词 PLEISTOCENE alluvial fans PIEDMONT CALCRETE active erosion.
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A New Host for Meloidogyne incognita (Kofoid & White 1919) Chitwood, 1949 (Nemata: Tylenchida) in Turkey: Potato
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作者 F. D. Erdogus H. C. Akgul S. Bayram 《Journal of Agricultural Science and Technology(A)》 2011年第1X期100-105,共6页
Potato is the main material of nutrition comes after the wheat and, is subjected to attacks of different plant parasitic nematodes which cause serious damages in our country. Especially, root-knot nematodes cause seri... Potato is the main material of nutrition comes after the wheat and, is subjected to attacks of different plant parasitic nematodes which cause serious damages in our country. Especially, root-knot nematodes cause serious crop losses on them. Due to usage oflnfested seeds, parasitic nematodes are increasing from year to year. In our country, so far, many infested hosts of Meloidogyne incognita (Kofoid &White, 1919) Chitwood, 1949 were detected but there is no report on investigation on potato. During this study, adult females of root-knot nematodes were obtained via extracting gals of 133 tuber samples, collected potatoes fields in the Marmara region especially Balikesir, Bilecik, Bursa, Canakkale, Edirne, Istanbul, Kirklareli, Kocaeli, Sakarya and Tekirdag provinces during 2007-2008. During identification the species, second stage larvae were taken into consideration as well as genital preparations of adult females. For the identification classical methods were used together with molecular methods. As result, M. incognita was detected, only species detected among the Meloidogyne genus upon the 10 provinces investigated in Edirne province, Bosna village. This is the first report of the infestation of this species potato and also in Marmara Region. 展开更多
关键词 NEMATODE Meloidogyne spp TYLENCHIDA POTATO the marmara region
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Fundamentalism: Militancy or Militarism?
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作者 Hongie Godlove Ngwochu 《Sociology Study》 2013年第11期815-824,共10页
The foundational and survival principles of all religions are shrouded in rituals, narratives, origin-stories, cultic practices, casuistries, taboos, mythical figures and institutions of authority. However, through ou... The foundational and survival principles of all religions are shrouded in rituals, narratives, origin-stories, cultic practices, casuistries, taboos, mythical figures and institutions of authority. However, through out history, religions have been threatened by politico-military and religious aggressions from other peoples, by heterodoxies, alternative origin-stories, practices and beliefs. These threats became unprecedented with the advent of Modernity. Faced with these destabilizing agents, they resorted to citing textual authorities, strengthening their institutions, giving leaders more powers, precisely defining belief commitments, punishing heretics and using violence against heterodoxies. Consequently, in their obsessive quest for preserving the sanctity of their faiths against modern threats, religions or section of a religion adopted both revival and resistant measures. Fundamentalism thus developed within these contexts. This paper intends to reveal that religious militancy and militarism are ramifications of Fundamentalism. It argues that Modernity's destabilizing agents to religions and religions' passionate desire for self-protective steps, militant or militaristic, yield to the phenomenon of Fundamentalism. Secondary sources were used to assemble the data while analytical and comparative approaches with empirical emphases on Christianity and Islam were used to weave the findings with the finality that militant or militaristic, Fundamentalism is religions' obsessive response to Modernity, 展开更多
关键词 RELIGION Modernity FUNDAMENTALISM MILITANCY MILITARISM
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Legal Framework of Shari'ah Corporations in Malaysia: Special Reference to Waqf Corporation
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作者 Zuhairah ArifAbd Ghadas Hartinie binti Abd Aziz 《Journal of Modern Accounting and Auditing》 2017年第3期121-127,共7页
In Malaysia, the Islamic commercial institutions were established under respective legislations which contain express term on their status as a body corporate. Examples of these institutions are Islamic banks, zakah i... In Malaysia, the Islamic commercial institutions were established under respective legislations which contain express term on their status as a body corporate. Examples of these institutions are Islamic banks, zakah institutions, Pilgrimage Board and Islamic insurance (takaful) companies. In 1998, Johor Corporation (JCorp) initiated a corporate waqf entity known as Waqaf An-Nur Corporation Berhad (WANCorp). In 2011, Majlis Agama Islam Wilayah Persekutuan (MAIWP) collaborated with Tabung Haji to develop a Class AWaqf building leased to Bank Islam Malaysia Berhad (BIMB). The developments in waqf involving corporate entities are worth to be analyzed in order to create a new framework of waqf practice. This paper deliberated the attributes of corporations under the Malaysian law and compares them with the principles of Islamic law (Shari'ah). For the purpose of discussion, this paper refers to WANCorp and Awqaf Holdings as examples ofwaqf corporations in Malaysia. 展开更多
关键词 body corporate waqf corporation COMPANY
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Spatial Variability of Soil Organic Carbon in Different Hillslope Positions in Toshan Area, Golestan Province, Iran: Geostatistical Approaches 被引量:2
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作者 Abolfazl BAMERI Farhad KHORMALI +1 位作者 Farshad KIANI Amir Ahmad DEHGHANI 《Journal of Mountain Science》 SCIE CSCD 2015年第6期1422-1433,共12页
Accessibility to organic carbon(OC) budget is required for sustainable agricultural development and ecosystem preservation and restoration. Using geostatistical models to describe and demonstrate the spatial variabili... Accessibility to organic carbon(OC) budget is required for sustainable agricultural development and ecosystem preservation and restoration. Using geostatistical models to describe and demonstrate the spatial variability of soil organic carbon(SOC) will lead to a greater understanding of this dynamics. The aim of this paper is to present the relationships between the spatial variability of SOC and the topographic features by using geostatistical methods on a loess mountain-slope in Toshan region, Golestan Province, northern Iran. Hence, 234 soil samples were collected in a regular grid that covered different parts of the slope. The results showed that such factors as silt, clay, saturated moisture content, mean weighted diameter(MWD) and bulk density were all correlated to the OC content in different slope positions, and the spatial variability of SOC more to slope positions and elevations. The coefficient of variation(CV) indicated that the variability of SOC was moderate in different slope positions and for the mountain-slope as a whole. However, the higher variability of SOC(CV = 45.6%) was shown in the back-slope positions. Also, the ordinary cokriging method for clay as covariant gave better results in evaluating SOC for the whole slope with the RMSE value 0.2552 in comparison with the kriging and the inverse distance weighted(IDW) methods. The interpolation map of OC for the slope under investigation showed lowering SOC concentrations versus increasing elevation and slope gradient. The spatial correlation ratio was different between various slope positions and related to the topographic texture. 展开更多
关键词 Geostatistics Loess Soil organic carbon(SOC) Slope position Spatial heterogeneity Topography
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Landfill Siting Using GIS and AHP (Analytical Hierarchy Process): A Case Study AI-Qasim Qadhaa, Babylon, Iraq 被引量:1
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作者 Ali Jalil Chabuk Nadhir A1-Ansari +2 位作者 Hussain Musa Hussain Sven Knutsson Roland Pusch 《Journal of Civil Engineering and Architecture》 2016年第5期530-543,共14页
The selection of a landfill site is considered as a complicated task because this process is based on many factors and restrictions. For Al-Qasim Qadhaa, which is situated in the southern part of the Babylon Governora... The selection of a landfill site is considered as a complicated task because this process is based on many factors and restrictions. For Al-Qasim Qadhaa, which is situated in the southern part of the Babylon Governorate, Iraq, there is no landfill site in that area that conforms to the scientific criteria for selecting sites for landfill. For this reason, 15 criteria were adopted in this study (groundwater depth, rivers, soil types, agriculture lands use, land use, elevation, slope, gas pipelines, oil pipelines, power lines, roads, railways, urban centers, villages and archaeological sites) using GIS (geographic information system), which has a large ability to manage input data. In addition, the AHP (analytical hierarchy process) method was used to derive the relative weightings for each criterion using pair-wise comparison. To obtain the suitability index for candidate landfill sites, a weighted linear combination method was used. After combining these methods, two suitable candidate landfill sites, with areas of 2.766 km2 and 2.055 km2, respectively, were found to satisfy the scientific and environmental requirements. The area of these sites can accommodate solid waste from 2020 until 2030 based on the required area, which was 0.702 km2. 展开更多
关键词 LANDFILL AI-Qasim Qadhaa AHP (analytical hierarchy process) GIS WLC (weighted linear combination).
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The Origin of the Different Waves of Iranian Migration in France
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作者 Nader Vahabi 《Cultural and Religious Studies》 2016年第8期469-487,共19页
From the knowledge exile of the 19th century, the profile changed towards the political refugee in 1908. French was then recognized as the official language in administration. Iranian migration later took on another d... From the knowledge exile of the 19th century, the profile changed towards the political refugee in 1908. French was then recognized as the official language in administration. Iranian migration later took on another dimension after the 1953 Coup, a politicization that reached a peak with the arrival in Paris of Khomeini on August 2, 1978. In spite of this migratory tradition, about 4,000 persons before the revolution, the majority being from the political and financial elite, these migratory flows amplified in the middle of the 1980s, in such a way that at the end of December 2014, there were 31,000 Iranians in France. This new phase which included four waves, from a sociological point of view, can be called the diasporaisation of Iranian migration. The socio-economic profile goes from the urban elite: lawyers, officials, journalists, teachers, doctors, nurses, magistrates, military officials, company directors, political exiles, etc., to artisans such as shopkeepers, garage owners, building contractors.., and finally from the skilled labourer, on through to unskilled workers in building, restauration or removals, 展开更多
关键词 Iranian diaspora migratory flows four waves of migration socio-economic profile
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Legal Status of Biobanks in the Contexts of Privacy Perception of Islamic Law
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作者 Nurten Zeliha Sahin 《Cultural and Religious Studies》 2016年第4期229-237,共9页
Development of Biotechnology has brought a feasibility of the scientific analysis on this biological data and the processing of personal data content within human biological materials. In this sense, it has been recog... Development of Biotechnology has brought a feasibility of the scientific analysis on this biological data and the processing of personal data content within human biological materials. In this sense, it has been recognized as the main principle to protect the privacy of biological data belonging to individual since it can determine genetic makeup of an individual processing of personal data in the biological materials of human origin. Speaking of this context, Islam accepts human as the most dignified creation. This dignity given to human makes biological materials of human origin and human private. Privacy brings immunity. The responsibility to protect the human body has been given to mankind in order not to lose this dignity. This responsibility is not bounded by human's own body. It must protect the body privacy of next generation which is the heir of genetic heritage. This study will focus on the reflection of the privacy perception of the Islamic law towards body on the legality of human biological materials usage for research purposes. 展开更多
关键词 PRIVACY RESPONSIBILITY Maslahah Fitrah CREATION DIGNITY
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Spatial downscaling of climate variables using three statistical methods in Central Iran
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作者 Zahra JABERALANSAR Mostafa TARKESH Mehdi BASSIRI 《Journal of Mountain Science》 SCIE CSCD 2018年第3期606-617,共12页
Spatial downscaling methods are widely used for the production of bioclimatic variables(e.g. temperature and precipitation) in studies related to species ecological niche and drainage basin management and planning. Th... Spatial downscaling methods are widely used for the production of bioclimatic variables(e.g. temperature and precipitation) in studies related to species ecological niche and drainage basin management and planning. This study applied three different statistical methods, i.e. the moving window regression(MWR), nonparametric multiplicative regression(NPMR), and generalized linear model(GLM), to downscale the annual mean temperature(Bio1) and annual precipitation(Bio12) in central Iran from coarse scale(1 km × 1 km) to fine scale(250 m ×250 m). Elevation, aspect, distance from sea and normalized difference vegetation index(NDVI) were used as covariates to create downscaled bioclimatic variables. Model assessment was performed by comparing model outcomes with observational data from weather stations. Coefficients of determination(R2), bias, and root-mean-square error(RMSE) were used to evaluate models and covariates. The elevation could effectively justify the changes in bioclimatic factors related to temperature and precipitation. Allthree models could downscale the mean annual temperature data with similar R2, RMSE, and bias values. The MWR had the best performance and highest accuracy in downscaling annual precipitation(R2=0.70; RMSE=123.44). In general, the two nonparametric models, i.e. MWR and NPMR, can be reliably used for the downscaling of bioclimatic variables which have wide applications in species distribution modeling. 展开更多
关键词 Statistical models Climatic data ELEVATION Spatial resolution Temperature PRECIPITATION
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The Use of Male Legal Representatives by Ottoman Women in Their Interactions With the Islamic Courts, 1550-1650
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作者 Pinar Kayaalp 《History Research》 2013年第5期317-320,共4页
This study accentuates the differences in the ways in which Ottoman women, Muslim and non-Muslim, used the Islamic courts. In some regions Ottoman women went to the courts on their own while in others they relied on m... This study accentuates the differences in the ways in which Ottoman women, Muslim and non-Muslim, used the Islamic courts. In some regions Ottoman women went to the courts on their own while in others they relied on male representatives to enter into transactions or litigate on their behalf. Studies treating Islamic court records as uniform in shape and content have offered conflicting conclusions about the status of women in Ottoman society. This study demonstrates that a number of geographic and temporal variations affected women's access the courts, significantly affecting their legal status in the period of 1550-1650. 展开更多
关键词 ottoman empire islamic courts women in ottoman society
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Retakaful From Syariah Perspective: A Comparative Study
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作者 Setiyawan Gunardi Nurdeng Deuraseh +1 位作者 Hailani Muji Tahir Sanep Ahmad 《Chinese Business Review》 2013年第9期616-624,共9页
Retakaful is an arrangement to risk of retention limit funding takaful. Similarly, risk arrangements are operated by reinsurance to insurance funding. But, how is the retakaful legal status in Islamic law and the diff... Retakaful is an arrangement to risk of retention limit funding takaful. Similarly, risk arrangements are operated by reinsurance to insurance funding. But, how is the retakaful legal status in Islamic law and the differences between reinsurance. The objective of this study is to identify the status of the retakaful in Islamic law and identify the differences between reinsurance. The study to found that retakaful is prescribed and an alternative to reinsurance, as well as a method of financial protection against the various risks of the takaful industry in excess of the retention limit, which may occur at any time in accordance with the principles of Sharia. Also in this method of risk arrangements, It is found that there are very significant differences in risk between retakaful and conventional reinsurance. 展开更多
关键词 retakaful RISK retention limits REINSURANCE
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Vision and Imagination in the Renaissance Theatre
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作者 Carlo Fanelli 《Journal of Literature and Art Studies》 2016年第2期147-165,共19页
To see what lacks representation on stage is a fully creative act that the spectator performs thanks to his or her imagination, as (s)he is called to retrieve via memory what is objectively absent from the scene. Th... To see what lacks representation on stage is a fully creative act that the spectator performs thanks to his or her imagination, as (s)he is called to retrieve via memory what is objectively absent from the scene. The Renaissance audience accomplished such a creative act by making use of rhetoric and figurative arts. However, it is pre-eminently words that trigger and support the imagination, as Shakespeare's drama best exemplifies. Both in the Elizabethan drama and in the Italian Renaissance theatre, with its perspectival vision, the spectator's creative act takes place in an ideal space where the stage space turns into the locus of stereoscopic vision. Consequently, the creation and consumption of the vision originates first and foremost in drama (comedy and tragedy). The psychological, aesthetic, and anthropological mechanisms at the heart of vision, and the fruition of the images deriving from words, can be found as operating within the dramatic text, from the point of view of both the playwright and of the spectator/listener, in a direct relationship of cause and effect. Religious and especially Jesuitical drama, whose theatrical experience aims at discovering a correspondence between words and images, testifies to the visual power of the theatre. 展开更多
关键词 IMAGINATION VISION THEATRE RENAISSANCE perspective scenery .
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Casimir Effect of Massive Scalar Field with Hybrid Boundary Condition in(1+1)-Dimensional Spacetime
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作者 HE Xiao-Kai LIU Wen-Biao QIU Wei-Gang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第5期845-848,共4页
The Casimir energy of massive scalar field with hybrid (Diriehlet-Neumann) boundary condition is calculated. In order to regularize the model, the typical methods named as mode summation method and Green's function... The Casimir energy of massive scalar field with hybrid (Diriehlet-Neumann) boundary condition is calculated. In order to regularize the model, the typical methods named as mode summation method and Green's function method are used respectively. It is found that the regularized zero-point energy density depends on the scalar field's mass. When the field is massless, the result is consistent with previous literatures. 展开更多
关键词 Casimir effect boundary condition massive scalar field REGULARIZATION
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Ranking Landfill Sites in Najaf Governorate, Iraq Using AHP and Fuzzy TOPSIS Methods
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作者 Mohammad A. Al-Anbari Muhannad Y. Thameer +1 位作者 Nadhir AI-Ansari Sven Knutsson 《Journal of Civil Engineering and Architecture》 2016年第7期815-821,共7页
In Najaf Govemorate, Iraq, there are five landfill sites. This study aims to rank these sites based on their criteria which are site capacity, land elevation and land price. AHP (analytic hierarchy process) method w... In Najaf Govemorate, Iraq, there are five landfill sites. This study aims to rank these sites based on their criteria which are site capacity, land elevation and land price. AHP (analytic hierarchy process) method was used to weight the criteria and the technique for order preference by similarity to ideal solution. Fuzzy TOPSIS (technique for order of preference by similarity to ideal solution) method was used to rank these sites from best to worst. Based on AHP method, the site capacity criterion was the most important than land price and land elevation. 展开更多
关键词 Najaf Govemorate Iraq AHP TOPSIS.
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Comparison of Economic Life of Tractors in Iran Using Condition Monitoring (CM) and Breakdown Maintenance (BM) Methods
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作者 Ahmad Mohammadi Morteza Almassi +2 位作者 Alireza Masoudi Saeed Minaei Hamid Mashhadi Meighani 《Journal of Agricultural Science and Technology(A)》 2012年第1期90-96,共7页
Repair and maintenance costs are the most important factors affecting decision making about substituting agricultural machineries. This decision is made based on the economic life (time) of machineries. In this rese... Repair and maintenance costs are the most important factors affecting decision making about substituting agricultural machineries. This decision is made based on the economic life (time) of machineries. In this research, condition monitoring of MF285 and MF399 tractors was performed using engine oil analysis to find the optimum life time of tractor substitution in comparison with the breakdown maintenance method in Iran. All recorded information about fixed and variable costs were selected as data base and analyzed. Data were divided (classified) based on period of annual working time. Using power regression analysis led to find mathematical models for the optimum time life definition. Cumulative working time (X) was selected as independent and cumulative costs based on definite percent of initial price (Y) was considered as dependent variable and a power law equation was found to express the costs of both MF399 and MF285 tractors as a function of working time. Results showed that in CM method, average of economic life was 13 and 11 years for MF399 and MF285, respectively. It was also found that in BM method, economic life wasl0 and 8.5 years for MF399 and MF285, respectively. 展开更多
关键词 Condition monitoring breakdown maintenance oil analysis useful life TRACTOR
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Fuzzy TOPSIS method to primary crusher selection for Golegohar Iron Mine(Iran) 被引量:6
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作者 Mohammad Javad Rahimdel Mohammad Karamoozian 《Journal of Central South University》 SCIE EI CAS 2014年第11期4352-4359,共8页
Selection of the crusher required a great deal of design regarding to the mine planning. Selection of suitable primary crusher from all of available primary crushers is a multi-criterion decision making(MCDM) problem.... Selection of the crusher required a great deal of design regarding to the mine planning. Selection of suitable primary crusher from all of available primary crushers is a multi-criterion decision making(MCDM) problem. The present work explores the use of technique for order performance by similarity to ideal solution(TOPSIS) with fuzzy set theory to select best primary crusher for Golegohar Iron Mine in Iran. Gyratory, double toggle jaw, single toggle jaw, high speed roll crusher, low speed sizer, impact crusher, hammer mill and feeder breaker crushers have been considered as alternatives. Also, the capacity, feed size, product size, rock compressive strength, abrasion index and application of primary crusher for mobile plants were considered as criteria for solution of this MCDM problem. To determine the order of the alternatives, closeness coefficient is defined by calculating the distances to the fuzzy positive ideal solution(FPIS) and fuzzy negative ideal solution(FNIS). Results of our work based on fuzzy TOPSIS method show that the gyratory is the best primary crusher for the studied mine. 展开更多
关键词 primary crusher multi-criterion decision making(MCDM) technique for order performance by similarity to ideal solution fuzzy set theory Golegohar Iron Mine gyratory crusher
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