شماره ركورد :
1140609
عنوان مقاله :
شناسايي مخاطرات انساني تأثيرگذار بر آسيب پذيري شهر اردبيل با استفاده از روش حداقل مربعات جزئي (PLS)
عنوان به زبان ديگر :
The Identification of Human Hazards Effective in the City of Ardabil’s Vulnerability by Using Partial Squares Least (PLS)
پديد آورندگان :
پاشازاده، اصغر دانشگاه محقق اردبيلي، اردبيل , يزداني، محمد حسن دانشگاه محقق اردبيلي، اردبيل , محمدي، عليرضا دانشگاه محقق اردبيلي، اردبيل
تعداد صفحه :
14
از صفحه :
183
تا صفحه :
196
كليدواژه :
مخاطرات انساني , آسيب پذيري , معادلات ساختاري , مدل حداقل مجذورات جزئي , شهر اردبيل
چكيده فارسي :
امروزه شهرها به ­طورگسترده در معرض انواع مختلفي از مخاطرات انساني قرارگرفته ­اند كه سبب آسيب ­پذيري آن­ها شده است، از اين ­رو و در راستاي تاب­ آور نمودن شهرها لازم است مخاطرات آنها شناسايي گردد و براي كاهش خطرات و پيش­گيري از وقوع آنها برنامه ­ريزي شود. شهر اردبيل هم از اين امر مستثني نيست و داراي مخاطرات انساني گوناگوني است. لذا هدف اين مقاله شناسايي مهمترين مخاطرات انساني تاثيرگذار بر آسيب ­پذيري شهر اردبيل است. روش تحقيق در مطالعه حاضر به لحاظ هدف كاربردي و به لحاظ ماهيت توصيفي- تحليلي مي­ باشد و روش جمع­ آوري داده ­ها و اطلاعات نيز اسنادي و ميداني (با استفاده از مصاحبه و پرسش­نامه) است. جامعه آماري اين تحقيق كارشناسان و اساتيد مربوطه هستند، كه از 200 نفر به روش هدفمند، پرسش­نامه تكميل شده است. به منظور تحليل داده­ ها، آزمون فرضيه­ ها و ارائه مدل، از روش حداقل مربعات جزئي در نرم افزار smart- pls استفاده شده است. يافته­ هاي تحقيق نشان مي­دهد كه تمامي 11متغير تحقيق (مخاطرات انساني) آسيب­ پذيري شهراردبيل را 0/781 تبيين مي­ كنند. بيشترين ضريب مسير (تأثيرگذاري) به ترتيب براي متغيرهاي مخاطرات اقتصادي، بيماري­ها و تصادفات خياباني به دست آمده است. همچنين يافته ­ها نشان مي­ دهند كه تمامي مخاطرات انساني مورد بررسي در اين پژوهش (جز آتش­ سوزي) بر آسيب ­پذيري شهر اردبيل تاثير مثبت معناداري دارند. در نتيجه اين پژوهش براي مديران و برنامه ­ريزان شهري اين حقيقت را روشن مي­ سازد كه آنها بايد برنامه ­هايي براي پيشگيري اين قبيل مخاطرات داشته باشند تا زمينه براي تاب ­آوري شهر مهيا گردد.
چكيده لاتين :
Introduction Nowadays, cities have been widely exposed to the various types of the human hazards and this instability has resulted in their vulnerability. Therefore, in order to make cities resilient, it is necessary to identify these hazards and plan to reduce them and prevent their occurrence. The city of Ardebil is not an exception in this regard and it has been exposed to a variety of these human hazards. At first glance, it is assumed that Ardabil encounters many hazards resulted from the high divorce rate, environmental issues and different types of pollution, unemployment, street accidents, crime rate, cancer, located near the border and the possibility of security issues, the possibility of tribal ethnic tensions between the citizens of the provincial capital with other citizens. With regard to these issues, the purpose of this study is to identify the most important human hazards which are deciding factors in Ardabil's vulnerability. This identification can provide urban managers with the basis on which they can make policy to make the city more resilient. Considering the variables and the purpose, this study hypothesized that: There is a significant relationship between human hazards and the vulnerability of the city. Methodology This study is an applied and experimental one in terms of its purpose. In addition, considering the combination of both qualitative and quantitative methods, it is mixed-method and exploratory in nature. The required data was collected through documentary and field methods (through both interviews and questionnaires). At first, the primary risks were identified by interviewing the city’s 10 experts (qualitative part). Then, with taking into account the identified hazards, the relevant questionnaire was designed and used (quantitative part). The participants of this study were the experts with related fields and the professors. According to the rules of research models and the experts available in the city, 200 participants completed the questionnaire purposefully. The data was analyzed by applying parametric statistical methods. Moreover, in order to analyze the data and to test the hypotheses and the conceptual model, the variance-based structural equation was used (by using partial least squares). To test the validity of the used model, the normality and chi-square tests or Bartlett's sphericity were used. The assumption of the normality of the data was tested by Kolmogorov-Smirnov test. Confirmatory Factor Analysis, Cronbach's alpha test and combined ratio were also applied to estimate the reliability. Furthermore, in order to measure the convergent & discriminate validity, average variance extracted and Chen test were used, respectively. Also, the hypotheses (and the path's Coefficient Alpha and t-statistic) was tested by PLS and boot Astarp algorithms. In this regard, we used Excel, SPSS and smart- pls software. Results and Discussion The results of the Kolmogorov-Smirnov test indicate that the data are normally distributed and the use of parametric statistical methods is acceptable. Moreover, according to Chi-square and Bartlett's test results, there is an acceptable linear relationship between the variables. The average variance extracted for the convergent validity and Chen test for discriminate validity show that variables has high level of validity. Also, the results of the Confirmatory Factor Analysis, Cronbach's alpha test, and combined ratio report that there are acceptable reliability between the variables in the present study. Finally, all of 11 variables (human hazards) account for the city of Ardabil’s vulnerability (0/781). The high values of t-statistic and path’s coefficient Alpha are related to economic risk factors, diseases and street accidents, respectively. In contrast, fire and pollution achieve the lowest values of t-statistic and path's coefficient Alpha. In addition, the results indicate that all of the human hazards discussed in this study (except fire) have significant positive effects on Ardabil’s vulnerability. Finally, the results report that the economic issues, diseases, street accidents, crime, management issues, divorce, flooding streets, cultural issues, issues of nutrition, and pollution are the main human hazards of Ardabil. Conclusion With regard to research findings and due to the fact that the city is an organization in itself and the urban hazards are linked together, it can be concluded that the unemployment can lead to nutritional problems and even to diseases and management problems. The management problems can result in crime, accidents, flooding streets, and street accidents (caused by the poor urbanism). The crime increases divorce rate and vice versa. Finally, the crime and divorce are derived from cultural issues. Therefore, it can be concluded that mentioned hazards can cause the city vulnerability. Especially, unemployment, the problem of cancer, and the management problems are real concerns in Ardebil. Therefore, his study makes it clear for managers that they can not only reduce the vulnerability of the city, but also they can make the city resilient by identification and planning of the human hazards and the variables explained them.
سال انتشار :
1399
عنوان نشريه :
مطالعات برنامه ريزي سكونتگاه هاي انساني
فايل PDF :
8110935
لينک به اين مدرک :
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