685 research outputs found

    An Ontological Approach to the Innate Cognition in Human Being Emphasizing the Principles of Transcendental Wisdom

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    Human, who is the symbol of the Divine Names and has displayed a glorious resemblance to his Creator from among the creatures, alongside the wisdom, has taken his glory from an innate nature based on the divine nature. This gift, which has been expanded in both the cognitive aspect and the tendencies of human beings, has made his essence insightful, which is also the source of his innate desires. After dividing the innate perceptions into the knowledge by presence and the knowledge by acquisition, the innate perceptions of the knowledge by presence is the immediate reception of information that has been intertwined with human nature. Explaining the features such as the existence of the innate cognitions by presence, its skepticism, and also the examination of how the union is between the knowing to innate cognition and its known among the ontological coordinates of this knowledge in man. Undoubtedly the incomparable precisions of the transcendental wisdom among the philosophical schools has been the only reason the author has discussed the subject of this study from the same perspective

    Distributed static series compensator in 11kV networks

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    PhD ThesisSeries compensation techniques can be very effective when applied in an electrical network to increase the power transfer capacity of existing power lines. Distributed Static Series Compensation (DSSC) is a power electronics based series compensation scheme in which a DSSC device comprises of a single-phase H-bridge voltage source converter, a dc link capacitor and a low pass filter suspended from the power line via a single turn transformer. The application of DSSC in the 11kV distribution network is investigated in this thesis. This is followed by a study of existing control strategies employed in DSSC and Static Synchronies Series Compensation (SSSC) schemes. Most of these controllers are based on dq transformation methods in which balanced conditions are assumed and zero sequence currents are assumed to be negligible. While this might be a reasonable assumption at transmission level voltages, but it can be argued that in the presence of unbalanced loads and currents (a common feature of lower voltage distribution networks) these strategies can be inaccurate, leading to the wrong amount of compensation being injected. In addition some of the studied controllers are based on the 90° phase shift of line current. Practically, the injection angle must be slightly different in order to compensate the internal losses of the DSSC. The need for the diversion from the 90° can change over the time and this can threaten the stability of the system. A new single-phase control strategy based on the instantaneous power exchange between the DSSC devices and each of the three phase conductors is proposed in this thesis to address this issue. The new control method does not employ a dq transformation and is immune from the probable errors resulting from the presence of unbalanced network conditions. In the same time the injection angle is not fixed and it is adjusted by the controller. The operation of DSSC can be categorized in two modes and transfer function of system is obtained based on these two modes. The transfer function is used in the design of controller. This is followed by analyzing immunity of the designed controller against change of system parameters. The proposed scheme is simulated (using PSCAD software) to examine the operation of the new control method and the resulting impact on the 11kV distribution feeder, including the ability to divert power from one line to another and the ability to improve network voltage profiles. Performance of DSSC using the proposed controller is compared with performance of DSSC when the traditional controllers are employed

    On Strong Small Loop Transfer Spaces Relative to Subgroups of Fundamental Groups

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    Let HH be a subgroup of the fundamental group π1(X,x0)\pi_{1}(X,x_{0}). By extending the concept of strong SLT space to a relative version with respect to HH, strong HH-SLT space, first, we investigate the existence of a covering map for strong HH-SLT spaces. Moreover, we show that a semicovering map is a covering map in the presence of strong HH-SLT property. Second, we present conditions under which the whisker topology agrees with the lasso topology on X~H\widetilde{X}_{H}. Also, we study the relationship between open subsets of π1wh(X,x0)\pi_{1}^{wh}(X,x_{0}) and π1l(X,x0)\pi_{1}^{l}(X,x_{0}). Finally, we give some examples to justify the definition and study of strong HH-SLT spaces.Comment: 16 page

    Assessment of Urban Greenhouse Gas Emission Inventory in Montréal

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    Assessment of Urban Greenhouse Gas Emission Inventory in Montréal Shadnoush Pashaei Farahani There is an increasing concern about global warming resulting from greenhouse gas (GHG) emissions. GHGs can be produced from a wide range of anthropogenic activities at different spatial and temporal scales. Since most of the world population lives in cities, emission from urban areas is an important source of GHGs. The city is a complicated system consisting of various components and processes. Efforts have been made to mitigate urban GHG emissions. However, there is a lack of available methods for effective assessment of such emissions. Many urban sources and factors which can influence the emissions are still unknown. In the present study, the contributing factors in an urban area were identified and the GHG emission from municipal activities was assessed. A model for the assessment of urban GHG emissions was developed. Based on the collected data, a case study was conducted to evaluate urban GHG emissions in Montreal. The comprehensive assessment included the emissions from transportation (i.e. public, personal), electricity consumption, natural gas, heating oil, waste disposal, and wastewater treatment as well as the carbon sequestered by green space. This study provided a new approach for the comprehensive evaluation of urban GHG emissions. The results can help better understand the emission process, identify the major emission sources and develop the appropriate strategies for emission reduction

    Reflections on the Theory of the Contraction and Expansion of Religious Knowledge

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    The principle of the relationship between religious and non-religious knowledge is not hidden from anyone and it is obvious that without the help of sciences such as literature, logic, principles of jurisprudence, principles of understanding hadith and rijal, etc., a correct understanding of religion can not be achieved. Found. However, some consider this interaction to be maximal and refer to it as the theory of Contraction and Expansion of Sharia. This idea, which from the designer's point of view is delivered to the three pillars of description, explanation and recommendation, can be detailed into ten pillars with a little reflection. The author of this study, who has critiqued this theory with a descriptive analytical method, considered problems such as self-inclusion, sophistry, doubt in the existence of the essence of religion, lack of distinction between certain and doubtful knowledge, etc. as the most important is shortcomings of this theory

    Decisional Balance Inventory (DBI) adolescent form for smoking : psychometric properties of the Persian version

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    Abstract Background One effective model for studying cigarette smoking cessation is the transtheoretical model (TTM). In order to assess to what degree interventions can make variations in individuals’ behavior, several questionnaires have been developed based on the TTM. This study aims to describe the development of the Persian version of the Decisional Balance Inventory (DBI) for smoking cessation in Iran and to evaluate its psychometric properties. Design and methods The forward-backward technique was used to translate the DBI from English into Persian. After linguistic validation and a pilot test among 30 male smoking young adults, a cross-sectional study was performed, and psychometric properties of the Persian version of the DBI were assessed. Using a convenience sampling method, 120 male smokers between 16 and 24 years of age were recruited from three factories in Nowshahr, Iran. In order to assess the reliability of the DBI, internal consistency and test–retest methods were performed. Additionally, face and content validity were assessed, and the construct validity of the DBI was calculated by performing both exploratory and confirmatory factor analysis. Data were analyzed using SPSS and AMOS. Results The mean age of the sample (n = 120) was 20.19 (SD = 2.13) years. The mean scores for the content validity index (CVI) and the content validity ratio (CVR) were .94 and .89, respectively. The results of exploratory factor analysis (EFA) showed a three-factor solution for the DBI that accounted for 55.4% of observed variance. The results achieved from the confirmatory factor analysis (CFA) displayed that the data fit the model: the relative chi-square (×2/df) = 1.733 (p < .001) and the root mean square error of approximation (RMSEA) = .07 (90% CI = .05–.105). All comparative indices of the model including GFI, AGFI, CFI, NNFI, and NFI were more than .80 (.87, .83, .91, .89, and .81, respectively). The Cronbach’s alpha ranged from .78 to .83, indicating an acceptable reliability. Furthermore, the intraclass correlation coefficient (ICC) ranged from .72 to .89, confirming a satisfactory result. Conclusions The results from the present study indicate that the Persian version of the DBI has good psychometric properties and is suitable to measure smoking behaviors among Iranian adolescent and young adult smokers. Consequently, the instrument could be used in planning cigarette smoking cessation interventions among Iranian adolescents and young adults

    Exploring breast cancer preventive lifestyle and social support of Iranian women : a study protocol for a mixed-methods approach

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    Abstract Background It is widely accepted that a healthy lifestyle may decrease the probability of developing cancer. This study aimed to describe a study protocol that makes it possible to explore preventive health lifestyles of Iranian women and their received social support for the purpose of developing cultural strategies to increase breast cancer prevention. Methods A mixed-methods study will be accomplished in two sequential parts. First, a cross-sectional study will be conducted in which 2,250 Iranian women are recruited by using a random multistage cluster sampling of 20 health care centers. Structured face-to-face interviews will be conducted to obtain information on the participants’ health lifestyle and perceived social support. Data will be analyzed using both multivariate regression and structural equation modeling techniques. Then, a qualitative study will be conducted among employed women using a purposive sampling design. Data will be collected by means of focus groups and semi-structured interviews and will be analyzed using a conventional content analysis approach. The results of the quantitative and qualitative study will be used to develop breast cancer preventive strategies. Discussion Researchers need to acquire knowledge regarding the lifestyle and perceived social support of Iranian women that will foster culturally competent approaches to promote healthy lifestyles to develop breast cancer preventive strategies. Examining breast cancer preventive lifestyles provides valuable information for designing applicable intervention programs for improving women’s health
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