OALib Journal期刊

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匹配条件: “TIMOTEI RAD” ,找到相关结果约520条。
Mapa político del mundo: entidades no representadas o representadas inadecuadamente
Cinq Continents , 2012,
Abstract: World political map: territories unrepresented or inadequately represented. The political map of the world is probably the most common source of information regarding the reality of the political geography of our planet. The message of this information is created and transmitted by cartographers. They have the responsibility to realize an exact, complete and up-to-date message and also to communicate it properly (by graphic representation). The article points the political entities that should appear on the political map of the world: independent states, quasi-states, de jure states, de facto states, free associated states, federacies, dependent territories and international territories and discusses issues related to the use of appropriate symbols for their graphic representation. The paper is an appeal to make a proper political map of the world. The theoretical approach is attached by the author’s practical effort: 5 maps including 6 of the de facto states and one de jure state.
Single Beam Z-Scan Measurement of Nonlinear Refractive Index of Crude Oils  [PDF]
Adeleh Granmayeh Rad
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.55038

Nonlinear properties of two different crude oils from west-south Iran reservoirs have been investigated using the single beam Z-scan technique. The nonlinear refractive indices of the samples were measured by use of diode laser in the CW regime and at the wavelength 660 nm. The experiment results showed that the samples have large and negative refractive index nonlinear refraction coefficient. These results showed that the crude oil has significant nonlinear properties and it could be a candidate for photonic and nonlinear optical devices and also this information can be used in petroleum science and oceanology and etc.

The Relationship between Self-Esteem and Paragraph Writing of Iranian EFL Learners  [PDF]
Mansoor Fahim, Somaye Khojaste Rad
Psychology (PSYCH) , 2012, DOI: 10.4236/psych.2012.31004
Abstract: The present study is an attempt to understand the relationship between self-esteem and paragraph writing of Iranian EFL learners. The study was conducted on both Iranian male and female senior EFL learners studying at Tonekabon and Lahijan Azad Universities. To start the project, first of all, the researcher ran the TOEFL test among 80 students. Then, the Self-esteem Coopersmith inventory was given to the same subjects, after that the researcher asked them to write three different kinds of paragraphs in three forms namely; descriptive, comparison/contrast and cause/effect. However, the last two stages were administered in one session by one week interval. Needless to say, the researcher was available in the class in order to eliminate probable misunderstanding while the subjects were completing all three above-mentioned stages. Finally, in order to come up with the result, the correlation related to the four questions was mea- sured by Pearson-product moment formula, thus, the results of the calculation of correlation coefficient showed a correlation between variables of each question. Based on the above-mentioned results the null hypotheses of this study were all rejected. Meanwhile, the consistency of the raters was calculated by α- Chronbach index showing a high reliability among all raters.
Microbiostratigraphy of the Sediments of Talezang Formation in Ghalebi Section (Southwest Lorestan, Iran)  [PDF]
Mostafa Yousefi Rad, Hamideh Noroozpour
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.56038
Abstract: In the present paper, Talezang Formation, located in southwest of Khoramabad, is studied. Ghalebi section (200 m thickness) contains gray limestones with cherty nodules and sandy limestone isoclinally overlies Amiran Formation (gray shale and limestone). It is underlain concordantly and discontinuously by Kashkan Formation. 160 samples are surveyed (examined) from the section; 28 genera and 4 species of benthonic foraminifera and 6 genera and 2 species of algae are identified. Due to similarity between identified benthonic foraminifera and Miscellanea-Kathina Assemblage Zone, the age of Talezang Formation can be assumed late Paleocene (Thanetian).
A Review on Fossil Findings of Central Iran’s Permo-Triassic Deposits  [PDF]
Hamideh Noroozpour, Mostafa Yousefi Rad
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.56035
Abstract: In this research, a review was done on Permo-Triassic deposits in Central Iran including Abadeh, Hambast, and Elika formations. Following an overview about the circumstances of Central Iran Basin during Permotriassic time interval, the respective formations are introduced, and then, history of paleontology studies on these deposits will be depicted. Through analysis and comparison of previous studies, the following ages were estimated for the aforementioned formations: Early Dzhulfian for Abadeh Formation, Late Dzhulfian-Dorashamian for Hambast Formation, and Early Triassic (Scythian) for Elika Formation. Also, Permotriassic boundary in Central Iran is continuous, bearing the proposed sedimentation and fossil content. It is noteworthy that due to volcanic events at the boundary of these deposits in Central Iran, one might infer that occurrence of the aforementioned activities has been among the major causes of the respective extinction.
Intermediaries in Market Economy – Classification and Objectives
Letitia Rad
Theoretical and Applied Economics , 2006,
Abstract: Many categories of middlemen can act in a distribution channel. We consider that the efficiency of a distribution channel is strongly connected with the number, kind and even identity of the middlemen that form it. The pattern analysis of the middlemen who acts in the distribution channel implies there classification and organization according to certain criteria. The utility of middlemen use in partial or entire developing of distribution activity of a company derives from the functions that fulfills, as well as the diverse activities that it achieves.
Lifetime Optimization via Network Sectoring in Cooperative Wireless Sensor Networks  [PDF]
Hadi Jamali Rad, Bahman Abolhassani, Mohammad Abdizadeh
Wireless Sensor Network (WSN) , 2010, DOI: 10.4236/wsn.2010.212108
Abstract: Employing cooperative communication in multihop wireless sensor networks provides the network with significant energy efficiency. However, the lifetime of such a network is directly dependant upon the lifetime of each of its individual sections (or clusters). Ignoring the fact that those sections close to sink have to forward more data (their own data plus the data received from the previous sections) and hence die sooner with considering equal section sizes, leads to a sub-optimal lifetime. In this paper, we optimize the section sizes of a multihop cooperative WSN so that it maximizes the network lifetime. Simulation results demonstrate a significant lifetime enhancement for the proposed optimal sectoring.
A Genetic Programming-PCA Hybrid Face Recognition Algorithm  [PDF]
Behzad Bozorgtabar, Gholam Ali Rezai Rad
Journal of Signal and Information Processing (JSIP) , 2011, DOI: 10.4236/jsip.2011.23022
Abstract: Increasing demand for a fast and reliable face recognition technology has obliged researchers to try and examine different pattern recognition schemes. But until now, Genetic Programming (GP), acclaimed pattern recognition, data mining and relation discovery methodology, has been neglected in face recognition literature. This paper tries to apply GP to face recognition. First Principal Component Analysis (PCA) is used to extract features, and then GP is used to classify image groups. To further improve the results, a leveraging method is also utilized. It is shown that although GP might not be efficient in its isolated form, a leveraged GP can offer results comparable to other Face recognition solutions.
Porphyry Copper Mineral Prospectivity Mapping Using Interval Valued Fuzzy Sets Topsis Method in Central Iran  [PDF]
Ali Reza Jafari Rad, W. Busch
Journal of Geographic Information System (JGIS) , 2011, DOI: 10.4236/jgis.2011.34028
Abstract: Geospatial Information System (GIS) provide tools to quantitatively analysis and combination of datasets from geological, geophysical, remote sensing and geochemical surveys for decision-making processes. Excellent coverage of well-documented and good quality data enables testing of variable exploration modeling in an efficient way. The study area of this research is the most important part of Cu (Mo) porphyry—type mineralization belt in Iran. There are some well-known porphyry copper deposits in this region like Sarcheshmeh and Meiduk mines, but certainly there are same grounds to search for new porphyry deposits. The risks of developing mineral resources need to be known as accurately as possible, with regarding to all features those are effective in mineralization. These features can be recognized respect to Critical Genetic Factors (CGF’s) using Critical Recognition Criteria (CRC) for each type of mineralization. CGF’s can be employed for designing a Conceptual Genetic Model (CGM). Evidence maps create on the basis of CGM and then integrate together for production of Mineral Prospectivity Map (MPM). This map categorizes the areas based on their exploration importance. There are several techniques for creation of MPM. Interval Valued Fuzzy Sets (IVFSs) TOPSIS method was applied in this research. This method as a knowledge-driven method, allocate appropriate weights to layers on the basis of the effective membership, non membership, and non-certainty. The fundamental concept of TOPSIS is that the chosen alternatives should have the shortest distance from the positive ideal points (A*) and the farthest distance from negative ideal points (A-).
A Workflow-Based Failure Recovery in Web Services Composition  [PDF]
Omid Bushehrian, Salman Zare, Navid Keihani Rad
Journal of Software Engineering and Applications (JSEA) , 2012, DOI: 10.4236/jsea.2012.52014
Abstract: In previous researches in the field of supporting reliability and fault tolerance in web service composition, only low level programming constructs such as exception handling (for example in WSBPEL) were considered. However we believe that the reliability and fault tolerance for composite services must be handled at a higher level of abstraction, i.e. at the workflow level. Therefore a language and technology independent method for fault-tolerant composition of web services is needed. To do this, a fault tolerant workflow is built in which the execution order of the services is determined such that upon a service failure a recovery process with the lowest cost is started. The cost of a service failure includes the cost of failed service and the total costs of roll-baking the previously executed services which are dependent on the failed service. In this article a FSP language is applied to formally specify the workflow.

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