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European Online Journal of Natural and Social Sciences
   Journal TOC RSS feeds Export to Zotero [13 followers]  Follow    
  This is an Open Access Journal Open Access journal
     ISSN (Print) 1805-3602
     Published by European Online Journal of Natural and Social Sciences Homepage  [1 journal]
  • A Survey on Supply Side of Mines: a Case Study of Iran

    • Authors: Farshad Sameni Keivani, Zeinab Khalili Sourkouhi
      Abstract: The mining sector is one of the most important factors in so many countries like Iran to achieve sustainable development. Due to importance of this sector in Iran, this paper investigates the supply side of mines in Iran. Hence, the main objective of this study is to investigate the supply side of mining in Iran. In order to get this aim, first, the annual time series data are collected from the website of Central Bank and Statistics Center of Iran. This paper determines the elasticity of the production factors of labor and capital for mining sector in Iran covering data 1988 to 2010. The Cobb-Douglas function is used to estimate mining sector production function which involves the OLS method using the EVIEWS8 and SPSS software. According to the results of this study during the years of the study the coefficients of the natural logarithm of the real capital and the natural logarithm of the labor in Iran are 1.621488 and 2.962340, respectively and these coefficients are statistically significant at the 5% confidence level. Indeed, these coefficients show the amount of elasticity of production factors for the mining sector in Iran. Hence, if the capital in the mining sector increases one percentage then the production in this sector increases 1.621488 and while the labor in this sector increases one percentage, then the production in this sector increases 2.962340 percent.
      PubDate: 2014-09-07
      Issue No: Vol. 3 (2014)
       
  • Fast-Growing Innovative Companies: Regularities, Trends and Main Features
           of the Market’s Behaviour

    • Authors: Nikolay Kuznetsov
      Abstract: In this article, the phenomenon of fast-growth of innovative companies is explored. The results of analysis of 200 companies IT-industry for ten years (from 2002 to 2011) are shown. It is concluded that in the real economic conditions the trends of the company's growth should be considered only in conjunction with the relevant market dynamics analysis. A new interpretation of the concept "business-gazelle" is based on classification of companies by the ratio of the growth rates and the extent of innovativeness of their activities is suggested. The real growth cases of innovative enterprise are considered. A scientific basis is given to the principle of maintaining the rate of fast economic growth of business due to permanent innovative development.
      PubDate: 2014-09-07
      Issue No: Vol. 3 (2014)
       
  • Role of Cognitive and Emotional Factors on Educational Achievement among
           High School Students in Physics

    • Authors: Shahram Vahedi, Manije Yari
      Abstract: The purpose of this study was to investigate effects of cognitive and emotional factors on physics achievement of high school students in Tabriz City. Using multistage sampling, 400 students were selected. Epistemological beliefs (EBAPS) scale, physic anxiety rating scale and questionnaire of attitudes towards physics were employed to gathering needed data in the study. Data were analyzed by Pearson's correlation test, and stepwise regression using SPSS. The results showed a significant and positive relationship between epistemological beliefs, attitude towards physics, prior knowledge of chemistry and mathematic with physics achievement. Also, a significant and negative relationship between physics anxiety and physics achievement was found.  
      PubDate: 2014-09-05
      Issue No: Vol. 3 (2014)
       
  • A Study on the Effect of Temperature in Synthesis and Magnetic Properties
           of W-Type Hexaferrites Barium Nanocomposites with Radar Wave Absorbing
           Properties

    • Authors: Hamed Abbasi, Mohammad Pasandideh
      Abstract: Absorption and attenuation of electromagnetic waves spread in air by radar or other equipments is considered as a main problem in military and industrial issues. With increasing development of radars and the raise of detection to solve the issue of camouflage, various methods have been offered including active removal, inactive removal, and absorbing materials and shaping deviate waves. To prepare absorbing materials used in aerospace industry, selecting a wide range of magnetic materials, conducting flow components and dielectric materials applied as matrix are regarded as deterministic factors. The present study attempts to investigate the effect of temperature in synthesis and magnetic properties of w-type hexaferrites barium Nano composites with radar wave absorbing properties. For this purpose, some salts such as cobalt, iron, and barium are employed to produce w-type hexaferrites barium Nano powder (Ba (CoxZn1+x)2 Fe16O27) using sol-gel auto-combustion via microwave. Compared to the other methods, the applied method has the advantages of more affordability, shorter synthesis time, pure specimen, lack of pollution, homogenized final phase, and lack of the need to high temperatures. The produced Nano powders are then analyzed through X-ray diffraction (XRD) in different temperatures revealing a close phase to W-type. A scanning electron microscope (SEM) is also used to determine the particles` size at Nano scale. Moreover, the vibrating magnetometer device is applied in order to depict the hysteresis loop of produced powders so that the rings are longer at the temperatures of 800 ° C and 950 ° C indicating higher magnetic saturation property.
      PubDate: 2014-09-05
      Issue No: Vol. 3 (2014)
       
  • Credit Ranking of Bank Customers (An Integrated Model of RFM, FAHP and
           K-means)

    • Authors: Roohollah Mohammadi, Bijan Bidabad, Tahereh Nourasteh, Mahshid Sherafati
      Abstract: In this paper, with the aim to rank customers in terms of credit, three patterns namely Hsieh (RFM), FAHP, and K-means were integrated. The main effective factors on ranking customers including transactions, repayment and RFM (Recency, Frequency and Monetary) variables were defined. For classifying the legal customers of Export Development Bank of Iran in terms of credit, 5 variables were extracted from the bank’s database and normalized accordingly. The weight of each variable was calculated through interviewing bank experts using FAHP. Using the values of the variables and K-means algorithm, the optimal clusters of customers were determined. Finally, bank customers were ranked in 5 credit clusters and the value of each cluster was estimated. According to the findings, recency, repayment behavior, transaction, frequency, and monetary variables had maximum effects on customers’ ranks, respectively. Therefore, 54% of the customers fell in the third cluster (with cluster value of 0.95) and the fifth cluster (with cluster value of 0.76) composed of good and very good customers. Credit risk of the two clusters (especially the third one) was at least. 32% of the customers positioned in the second cluster (with cluster value of 0.59) including the average customers in terms of credit. 14% of the customers fell in the fourth and first clusters with cluster values of 0.42 and 0.26 including highest risky customers.
      PubDate: 2014-09-03
      Issue No: Vol. 3 (2014)
       
  • Art of Architecture and Design for Urban Art Spaces: Case Study of Tehran

    • Authors: Ehsan Tavasoli, Qasem Matlabi, Solmaz Tatari
      Abstract: Urban art center has been designed aiming at memorable and statuary architecture creation which is considered as a place for artistic, cultural and social interactions for public. This kind of construction attempts to satisfy its addressees’ esthetic feelings to attract their attention to the art thereby provide public and artist interactive empathy as well as spiritual relaxation and fill intellectual gaps. Reinforcement of esthetic concept - these days necessity of our architecture - results in a well prepared environment for art growth and reinforcement within all social classes. Results from theoretical basics indicate that in spite of abundant resources around art there are weaknesses and deficiencies within its significance and necessity of scientific recognition and search for esthetic criteria.
      PubDate: 2014-08-30
      Issue No: Vol. 3 (2014)
       
  • The Movement of EFL learning Approaches toward Identity Constructs: A
           Gradual Development or a Social Turn

    • Authors: Mahnaz MostafaeiAlaei, Mohammad Reza Ghamari
      Abstract: This article aimed to examine the theoretical assumptions underlying the tendencies of current studies toward identity constructs. Attempt was made to see whether or not the identity studies in language teaching have come into existence because of a major movement called social turn. To do so, a study on the relationship between EFL learning and the construction of national identity among Iranian university students residing in Tehran was conducted. Anattempt was also made to examine if any associations exist between students' major of study and national identity. The findings are expected to help educators gain insight into the influential role of social factors including national identity in learning a foreign language and the other way around. To compare the learners' performances on a national identity questionnaire, correlation analyses, independent samples t-tests, and a one-way ANOVA were run. The results indicated some differences in the measures of national identity between beginners and more advanced learners. Moreover, participants performed differently on national identity as far as their study majors were concerned. The results of the present study have implications for education professionals especially materials developers.
      PubDate: 2014-08-30
      Issue No: Vol. 3 (2014)
       
  • Prevalence of Learning Disability in Primary School Students in Kerman
           City

    • Authors: Mahin Eslami, Ali Akbar Haghdoost, Nikseresht Afsaneh, Rafee Shahrbabaki Hamideh
      Abstract: The present study examined the prevalence of learning disabilities in primary school students in Kerman city. Respondents of the present study comprised of 793 primary students who were identified by cluster sampling technique. Instruments for students’ data collection included intelligent, mathematic, reading and writing tests and questionnaire. Results of the present study indicated that frequency of learning disabilities in Kerman primary school was 40.74% and there was a significant difference between boys and girls. Math disability was 13.9 percent, reading disability was 36.9 percent, and writing disability was 4.5 percent. There was a significant different in math disability among boys and girls. Also there was a significant different in writing and reading disability among boys and girls.
      PubDate: 2014-08-22
      Issue No: Vol. 3 (2014)
       
  • Studying the Effect of Mechanized Systems (Official Automation) on
           Managers Decision Making Quality: Case Study

    • Authors: Farhad Nejadirani, Leila Mosafer Yadegari, Reza Rasouli, Hadi Nasirzadeh
      Abstract: Decision making is among the major managerial tasks in an organization. In fact, it is making proper decisions that lead the organization toward predetermined objectives. Present study is conducted aiming at examining the effect of official (official automation) systems on increasing Eastern Azerbaijan Social Services Organization mangers' decision making quality. Regarding the objective, essence of the subject of this enquiry, and methodology, it is an applied research. Statistical community of the study comprised 70 individuals including all managers and deputies of the organization. Statistical sample equaled statistical community; instrument of the study is questioner the last part of it is conducted using SPSS and alpha test. The study is conducted based on 1 main hypothesis and 5 hypothesis questions statistically confirmed after statistical data analysis of all research hypotheses. Results from descriptive statistics are higher than an average level (research mean scores) for hypothesis testing. Considering the mean from hypothesis testing; the extent of employing official mechanized systems (official automation) effect on increasing Eastern Azerbaijan Social Services Organization mangers decision making quality is respectively: timeliness, validity, cost-effectiveness, speed, and accuracy of Eastern Azerbaijan Social Services Organization mangers decision making.
      PubDate: 2014-08-20
      Issue No: Vol. 3 (2014)
       
  • The Effect of Firm Size and Growth Opportunity on Accounting Discretion
           and its Relationship with Future Stock Return (Management Opportunism
           Test)

    • Authors: Jomadoordi Gorganli, Hamidreza Vakilifard
      Abstract: Accounting flexibility has raised concern about management opportunism among owners. Accounting discretion, as an information system controlled by directors, intensifies opportunism and agency problem. Regarding the firm situation, however, directors are likely to employ accounting discretion so that its consequences are compatible with shareholders’ interests, or at least do not oppose them. Firm size and growth opportunity are of great importance for its management, depending on the way it uses accounting discretion. The present study aims to offer a model indicating the relationship between firm size and growth opportunity and accounting discretion, and its effect on stock return as a distinctive characteristic of firm performance and consequently, test the management opportunism. This research employs an applied and correlational method. The results respectively point to a positively and negatively significant relationship between firm size and firm’s growth opportunity, and accounting discretion while the relationship between accounting discretion resulting from recent variables and stock return does not point to the opportunism of the directors. In general, the results indicated that there is no significant difference between predicted accounting discretion and projected future stock returns which indicates that there is a mismanagement in creating opportunities among the firms under study.
      PubDate: 2014-08-20
      Issue No: Vol. 3 (2014)
       
  • Evaluating the Influential Factors on Virtual Social Network’s Users
           in Viral Marketing

    • Authors: Amir Shiekhahmadi, Mohammad Ali Nematbakhsh, Kayvan Zarei
      Abstract: These days, by attending to the ever-increasing development of social networks and fast development of the virtual relationship with millions of massage interaction possibility in a second by these powerful beds, social networks analyses have been attended by analyzers and experts in different areas, especially in business and marketing fields. Companies and producers, because of marketing development in this part, and service presenters through the world believe that goods advertisement is vital in sailing success and presenting the services and company's profitability. Naturally, the last, past and traditional methods are not suitable. so, the online social networks transfer their advertisements to the customers in different parts of the world with low cost and fast spreading. Therefore, knowing the effective nodes in fast and low-cost spreading and effective recommendations for companies changed to a great challenge by attending to the giant structure of these networks. In this article, the factors, which are over the effective advertisement and services, have been extracted and the needed data have been gathered from Facebook virtual network users (437samples). The gathered data were analyzed in before stages by SPSS software. The stability of the questioners was verified by Cronbach's Alfa coefficient, and finally the suitable results and approaches were presented about recognizing the effective factors in social networks and their impacts scale on social network users which can be effective in viruses marketing area for increasing the business companies' advertisement spreading for reducing the costs of advertisement and comprehension of the advertisement.
      PubDate: 2014-08-19
      Issue No: Vol. 3 (2014)
       
  • Survey of Barriers to Rural Women Economic Empowerment in Iran

    • Authors: Vakil Heidari Sarban, Mohammad Hassanzadeh
      Abstract: Women play an indispensable role in farming and in improving the quality of life in rural areas. Also rural women play a key role in agricultural sector production by working with full passion in production of crops right from the soil preparation till post harvest and food security activities in developing countries. In addition, for reaching development and progress goals of developing countries such as Iran, considering women rural ability promotion are vital. Also, the important role of women rural empowerment in promoting more agricultural productivity and development in rural areas is now widely recognized. The purpose of this study was identifying barriers to rural women economic empowerment. A descriptive–correlation survey approach was used in this study. The population consisted of women living in rural areas of Ardabil County. The questionnaire and interview were used for data collection in this study. The researcher developed the survey instrument. Validity of the instrument was established using a panel of experts. Reliability of the instrument for various questions varied from 0.83 to 0.86. Results showed that the most important barriers to rural women economic empowerment are: less skill of women, lack of men confidence to women, Sexuality, much busy to work at home, lack of employment opportunity to rural women, lack support of government from women entrepreneurship, lack of ability of talking in public. By factor analysis, factors for barriers to rural women economic empowerment were reduced to four main factors, named as individual-psychological, economic participation, infrastructure and social-institutional.
      PubDate: 2014-08-15
      Issue No: Vol. 3 (2014)
       
  • Effects of Violent Movies on Drawing Symbols in Seven to Eleven Years Old
           Boys

    • Authors: Mina Haghighat, Seyed Mosa Tabatabaee, moazedian Amene, Mahboobeh Sabetimani
      Abstract: The aim of this study is to investigate the effect of violence watching on aggression expression in drawing symbols (paintings) of school children. The study population consisted of 50 male students of elementary schools in the city of Semnan (Miaad School) selected by multistage cluster sampling and then devised to two groups that each consisted of 25 participants, ( experimental and control ) groups. First, the experimental group watched violent movie scenes (full of fight) and then a drawing test was taken from them (free topic painting). After that, the control group that didn't watch movies takes drawing test. Both paintings were examined using paint analysis. Three variables of angled and bold lines and tricolor (green, red and black) are the sign of arousal and anger expression in children's drawings. Results: After analyzing and comparing the painting of both group, the results of statistical analysis showed symbols of anger in the experimental group was significantly higher than the painting of the control group. Conclusion: Watching violent films affects the drawing symbols of children.
      PubDate: 2014-08-15
      Issue No: Vol. 3 (2014)
       
  • Infallibility (Poka-Yoke) Fundamentals for Improving Production Processes,
           Case Study: An Automotive Parts Manufacturing Company

    • Authors: Mohammad Mahdi Parhizgar, Samad Khabbaz, Khorshid Foroghinia, Esmaeil Bakhshi Maleki
      Abstract: In production processes, quality is defined in terms of defects and sigma level wastes. In order to achieve zero level wastes, it is required that production processes’ sigma levels be increased through improvements in the processes. Utilizing Infallibility Strategy (Poka-Yoke) increases the sigma level of production processes and thus leads the process towards producing parts without fault and with zero defects. In the present study, the researcher has implemented the Infallibility Strategy (Poka-Yoke) in an automotive parts manufacturing company. In order to achieve the objectives of the study, the researcher, using a map, first determined the areas in which defects occurred in the production process, then the significance of defects with regard to their frequency of occurrence and their scope were determined, and the proper anti-error system was chosen. Given the number of defects and the annual production capacity, the PPM and the manufacturing process sigma level were calculated. Obtained results demonstrated the significant increase in the manufacturing process sigma level, which in turn implied the successful implementation of the Infallibility Strategy (Poka-Yoke) in the studied company.
      PubDate: 2014-08-12
      Issue No: Vol. 3 (2014)
       
  • Judith Butler’s Gender and Identity Trouble in David Mamet’s
           Glengarry Glen Ross and Oleanna

    • Authors: Fatemeh Amini, Fatemeh Azizmohammadi
      Abstract: Judith Butler as a rhetoric, comparative, and poststructuralist professor exhibits a far-reaching influence in a number of fields. Butler also is one of the following of ‘Gender Studied’ and her notion of gender as a cultural choice is useful for representing subject-formation and self-construction. Her outstanding books consist of “Gender Trouble” (1990) and “Bodies that Matter” (1993), are argued in drives literary theories such as “feminist theory” and “Gender studies”. Butler’ first book examined the contact of Hegel’s work on twentieth-century French philosophers. The following books drag extensively from psychoanalytic, feminist and poststructuralist theories. Judith Butler tries to focus on the terms performative acts and gender constitution in order to argue that “gender identity is a performative accomplishment compelled by social sanction and taboo (Butler, 1988, p. 520). She further believes that gender is something that is not a corporeal “social fiction” but is continuously reproducing, changing and moving. In Butler’s view, gender is only an “essential” part of a body’s identity that is presented in the world, so that a body constituted essential core identity through a set of preexisting characteristics that have been imposed on that body. Queer theory is another work of Butler’s notion that is in relation to Michel Foucault's History of Sexuality. By queer theory, Butler has emphasized on Differences that is in terminology and methods are based on performance and Foucault's reliance on formulations such as "power-knowledge" and "the deployment of alliance."
      PubDate: 2014-07-28
      Issue No: Vol. 3 (2014)
       
  • Study on the Relationship between Love Attitudes and Marital Satisfaction
           Among Married Women

    • Authors: Parastou Taghavi Dinani, mohammadreza zarbakhsh, Eshagh Samkhaniyan, Mahsa Hamidi, Farzaneh Arkiyan
      Abstract: The purpose of this research was to study the relation between love attitudes with marital satisfaction in women of Tehran. The statistical sample was 150 of married women among 22 regions of Tehran who were selected by Multi-stage cluster sampling. Parakash Marital Satisfaction (1985) and Love Attitude Scale–short form (LAS-SF) (1986) were used to collect data. Pearson correlation and multivariable regression used to analysis data. The result showed that there was a significant and positive relationship between Eros, Storge, Pragma, Agape of love attitudes with marital satisfaction, while Ludus had a negative and significant relationship with marital satisfaction. Stepwise Regression analyses showed that Eros, Pragma, Ludus and Storge of love attitudes were able to predict marital satisfaction.
      PubDate: 2014-07-28
      Issue No: Vol. 3 (2014)
       
  • Study of Reliability & Validity of Communicative Responses to Jealousy
           in Ahwaz City Women

    • Authors: Rashin Sabri Nazarzadeh, Parvin Ehteshamzadeh, Ali khaleghkhah
      Abstract: The Purpose of this study is to verify reliability &validation of communicative responses to jealousy & relationship among sexual satisfaction, couples intimacy and communicative responses to jealousy in Ahwaz city’s women. Sample of this research was participated 527 couples selected with clustering sampling method. Research tool was communicative responses to jealousy, Enrich short form of sexual satisfaction & couple’s intimacy scale. Confirmatory factor analysis, Pearson correlation coefficient & regression are used for analysis of research data. Results showed that A & B form of communicative responses to jealousy had appropriate validity (A form: RSMEA= 0.1, GFI= 0.99, AGFI=0/98 &²/df= 1.39; B form: RSMEA= 0.15, GFI= 0.94, AGFI=0/87 &²/df= 1.28).
      PubDate: 2014-07-27
      Issue No: Vol. 3 (2014)
       
  • Investigation of Pistachio Micro-Propagation (Proliferation) (Pistacia
           Vera L.)

    • Authors: Mansour Kalantar, O Jadidi
      Abstract: Tissue culture and micro-propagation is a branch of applied sciences in plant biotechnology which is of critical significance these days. This has played a great role in increasing different species of tree, shrub, herbaceous, etc. It merits some advantages such as ease of propagation, maintenance of genetic stability, lack of time limitation and place. In this research, pistachio rootstock (Pistacia vera L.) micro propagation has been selected due to its prevalence in Iran, the heavy cost of propagation through mating, the spread of common diseases of propagation by the current propagation methods and specially the market's demand for asexual propagation. In this study, some media cultures including knop, ½ knop, Ms, ½ Ms, Dkw, ½ Dkw were investigated in factorial statistical design with two hormones called BAP in four levels (0.5, 1, 1.5, 2) mg/l and NAA in Tri levels (0,0.1,0.2) mg/l and by Tri repetition. Results showed that most suitable treatment for explant (shoot tip) sterilization of samples is using %96 ethanol and %15 vaitex and washing with water, which then was cultured for proliferation. Also, the results showed DKW media is more suitable relative to others media and high dose of BAP (2 mg/l) and low dose of NAA (0 mg/l) in proliferation is suitable.
      PubDate: 2014-07-26
      Issue No: Vol. 3 (2014)
       
  • Comparing the Effect of Quality of life, Psychological Stressors and
           Coping Strategies in Kidney Patients and Normal People

    • Authors: Mina Ghadiri nofarast, Hamidreza Aghamohammadiyan Sherbaf, Abdolali Yaghoubi
      Abstract: The current research has been conducted with the aim of comparing the effect of quality of life, stressors and coping strategies in kidney patients and healthy people. The current research methodology is correlative. The population includes all of the kidney patients visiting Montaserieh hospital in Mashad during spring 2013 in a time span of one moth. 50 kidney patients and 50 healthy individuals were randomly chosen as the sample. The tools used in this research were questionnaires of psychological stressors, quality of life and coping strategies. The achieved data were analyzed by the use of analysis of covariance ANCOVA (a multivariate analysis of covariance). Results showed that kidney patients have less quality of life and more amounts of stress than the healthy individuals. On the other hand, the patients take more use of emotion-focused coping strategies. Since the current study is a casual-comparative study it could be alleged that variables of psychological stressors, coping strategies and quality of life had a casual role in formation of kidney disease.
      PubDate: 2014-07-26
      Issue No: Vol. 3 (2014)
       
  • On the Relationship between Stock Returns and Trading Volume: A Case Study

    • Authors: Amir Mansour Tehranchian, Masoud Behravesh, Saleh Hadinia
      Abstract: This article focuses on the experiment about the causality relationship between the stock returns and the trading volume of the member companies at Tehran Stock Market. Accordingly, the seasonal data from these companies within the years 1996 to 2009 are used to estimate the vector error correction model. The results obtained from the Philips–Perron Unit Root Test demonstrated that the above mentioned variables are integrated of the order one and thus there is a long run equilibrium relationship between them. The estimation from the error correction model proved that there is a positive and bidirectional relationship between these variables. However the stock returns has a stronger effect on the trading volume. Therefore, through a psychological analysis, the "Mass Behavior" hypothesis in the said stock market is not approved. Moreover, the estimation of the error correction coefficient indicated that balancing the said variables towards the long run equilibrium volumes, is slow.
      PubDate: 2014-07-26
      Issue No: Vol. 3 (2014)
       
 
 
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