جستجوی مقالات مرتبط با کلیدواژه « conceptual modeling » در نشریات گروه « کشاورزی »

Ever-increasing of population, global warming, and other natural disasters such as droughts and floods have led to a significant decline in health and ecosystem services. It further improves the necessity of planning and providing management measures for the tendency of watersheds towards optimal health, providing sustainable services, and avoiding critical conditions. However, due to the different conditions of the watersheds resulting from the prevailing conditions and their different resilience levels against the pressures, the elasticity of the watersheds to tend towards a relatively stable state is different. It accordingly is necessary to know the elasticity of watersheds to prioritize actions aimed at increasing the watershed health and ecosystem services. However, it was determined by reviewing the studies, until now, the conceptualization and modeling of the watersheds elasticity range in terms of watershed health and cultural, regulatory, provisioning, and supportive services have not been addressed yet. Therefore, in the present study, the management approach of the watershed elasticity domain and its importance and benefits in integrated watershed management are presented. Based on this, a framework for estimating the elasticity of watershed can be determined and a suitable model for explaining appropriate management practices to achieve sustainable development can be provided to local, regional, and national managers.

Watershed management projects are designed and implemented to protect primary resources (i.e., water, soil, and vegetation) and sustain production by maintaining soil fertility and agricultural sustainability, so understanding the problems of the watershed is an undeniable necessity for future planning and implementation of natural resources management. Effective management of the country's natural resources and control of their degradation based on explanation and adoption of a coherent structure and framework to properly identify watershed problems and determine the appropriate strategy to determine the implementation of measures as an emerging approach to watershed management is essential. Therefore, in the present study, a model approach of combining pressure-state-response and strategic planning approaches in comprehensive management and problem-oriented watershed management was used.

In this study, the PSR conceptual model was used to identify the problem of the Mikhsaz watershed. Appropriate criteria for identifying problems were evaluated in four categories of climatic factors: hydrology, human and. In this regard, the indicators and criteria affecting the river basin were summarized after examining the autocorrelation and alignment between the criteria. Due to the different sources of information, all data were standardized for criteria with positive and negative effects on the health of the region, respectively. The main problems in different parts of the watershed were identified based on the value of each of the factors affecting the class. Qualitative and quantitative strategic analysis has also been used to determine the optimal strategy. In the next stage, the analysis of internal and external factors, after identifying strengths, weaknesses, opportunities and threats, internal and external tables were created and analyzed. Finally, Quantitative Strategic Planning (QSPM) analysis was prepared. Finally, strategies for managing the Makhsaz watershed were presented.

The results showed that the main problem of the Mikhsaz watershed is related to the limitation of soil depth, which is exacerbated by changes land-use and increased specific erosion and, increases flood damage. Therefore, with with should be omitted the intervention of human factors, especially land-use change has led to problems. Among the considered criteria, soil depth, land use changes, and special erosion, respectively, had the worst situation with scores of 0.40, 0.51, and 0.53, respectively, which caused disturbances in the performance of the watershed. Focusing on the main and determining problems is of special importance. ST is also a good strategy. Achieving maximum utilization of internal strengths and advantages to deal with and minimize external threats and damage. Also, the result of quantitative strategic planning analysis showed that the should be added first should be omitted priority is given to the strategy of reducing resource degradation and then strategies to reduce temporary and permanent migration, increase household income and strengthen soil and water conservation programs with attractiveness scores of 1.58 and 52.5, respectively. 1, 1.51, and 1.50 are the next priorities. Therefore, with the existing opportunities and strengths, the weaknesses and threats in the study watershed can be overcome.

The present study was conducted to identify the problems of the should be added watershed in western Mazandaran using the conceptual model of pressure-state-response (PSR) and determine the optimal strategy for problem management using SWOT analysis. The results showed that the main problems of the Mikhsaz watershed include limited soil depth, land-use changes, and special erosion. Also, the result of quantitative strategic planning analysis showed that first first should be omitted priority is given to the strategy of reducing resource degradation. The results of the study indicate the need for executive measures commensurate with the type and importance of each of the factors affecting the study indicators in the river basin. Therefore, the strategy of using the potential advantages of environmental opportunities should be used to compensate for the weaknesses in the watershed.

Nowadays, natural disasters and human interventions are the main causes of problems at the watershed scale, hence, the management of such challenges is considered as one of the major problems. However, the present approaches for the management of the watershed resource do not appropriately handle the current issues. So that the scope and type of environmental issues are ever increasing and stand beyond the ecosystem tolerance. As communities strive for recover from disasters and move forward, resilient watersheds facilitate better management of natural systems against future hazards. Towards this, the resilience assessment approach has been proposed as a novel approach using existing potentials and pertinent definitions, indicators, and measurement patterns to strengthen multidimensional systems such as watersheds. Since the application of resilience analysis approach in dynamic and complex, it has not been conceptualized and reported until now in watershed systems. Accordingly, the present endeavor is an attempt to conceptualize the resilience of watersheds in order to provide a useful perspective for understanding management decisions and changes related to natural resources in the context of comprehensive watershed management.

This research was conducted with the aim of qualitative explanation of a conceptual model for academic brand development in higher agriculture education, case of Gorgan University of Agricultural Sciences and Natural Resources. This qualitative research was done by the descriptive phenomenological method. Data collection was conducted using semi-structured deep interview. Through theoretical sampling, 20 respondents were selected from the university community. The qualitative thematic content analysis was carried out to analyze the data. The findings of this research resulted in identifying and defining 116 indicators . The four-layer indicator set consists of 14 components. The first layer is the brand image of the university (brand equity); six components include brand awareness (5 indicators), brand association (6 indicators), brand superiority (5 indicators), brand emotional response or brand effect (6 indicators), brand identification (6 indicators), and brand resonance, including brand communication, loyalty, and support (with 9 indicators). The second layer, entitled University Experience, consists of three categories or components including relational-social Experience (8 indicators), personal development experience (9 indicators), and emotional experience (3 indicators). The third layer, or perceived service quality of the university, includes three components of educational quality (10 indicators), quality of life (8 indicators), and the quality of human and social relationships in the university or academic community (14 indicators) and the effects and outcomes of the university or the social presence of the university (14 indicators). The fourth layer, the perception of the quality of the host community of the university (place brand), is described with 10 indicators.

According to the evidence, the conventional quantitative reductionist research methodology was failed in explaining complex and intertwined issues of enterprise development. In this situation, the system approach to holistic research in the field of entrepreneurship and enterprise is needed. The purpose of this study is to introduce a systems approach in enterprise and entrepreneurship researches, with an emphasis on Soft System Methodology and its foundations, including participatory action research and conceptual modeling. SSM is a methodology that allows support and structure the thinking and intervention on the complex enterprise problems. Indeed, the advantages of this methodology are that makes easier to structure problematic complex situations of enterprise and steers the researcher or system analyzer to obtain and share a realistic and holistic perception of internal and external environment of the enterprise. The SSM applies participatory action research as kind of Cooperative or collaborative inquiry for integrated collective learning, innovation and change in enterprise environment. In the SSM process, conceptual models were used in order to help people recognize, understand and simulate the enterprise subjects which the model represents. For this purpose, an innovative methodology was introduced for the conceptual modeling in the seven stages based on semantic analysis. As alternative, evolutionary systems - integration of critical systems inquiry with SSM- could be considered as a methodology which is applicable to the exploration of open complex social systems of enterprise with the capacity to evolve over time.