فیلترها/جستجو در نتایج    

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متن کامل


نویسندگان: 

حیدری ج. | منتصری م.

اطلاعات دوره: 
  • سال: 

    0
  • دوره: 

    -
  • شماره: 

    2
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    443
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 443

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اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    12
  • شماره: 

    47
  • صفحات: 

    7-32
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    183
  • دانلود: 

    39
چکیده: 

Nowadays, the fundamental role of having a purpose for life in physical and mental health has been confirmed. According to victor frankl, presence of a purpose in life gives life a meaning and increases resilience against pains and traumas. The importance of the purpose in life construct reveals the need for a reliable and valid tool to measure it. Crumbaugh and Maholick's purpose in life questionnaire is the first and one of the most applied tools for the assessment of life's purposefulness. The aim of this research is to determine the Factor structure of purpose in life questionnaire. The questionnaire was administered on 206 students who were selected through random stratified sampling at Ferdowsi University of Mashhad. Exploratory Factor analysis showed that there are two Factors "comprehension" and "purpose" and this finding were confirmed by confirmatory Factor analysis. Altogether results of this research showed Factor validity of the purpose in life questionnaire with a two Factor pattern

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بازدید 183

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نویسندگان: 

جان قربانی محسن

اطلاعات دوره: 
  • سال: 

    0
  • دوره: 

    29
  • شماره: 

    2
  • صفحات: 

    117-121
تعامل: 
  • استنادات: 

    3
  • بازدید: 

    1150
  • دانلود: 

    381
چکیده: 

"عامل اثرگذار" واژه ای آشنا برای اغلب جامعه علمی و پزشکی است، ولی با وجود استفاده گسترده و اغلب وسواسی، معدودی بطور کامل معنی یا کاربردهای آن در واقع مجادله های راجع به آن را درک می کنند. در این مقاله نحوه اندازه گیری و استخراج این شاخص موثر و برخی مسایل مربوط به آن (بویژه سو استفاده از آن به عنوان سنجشی از شایستگی نویسنده) بررسی می شود.

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بازدید 1150

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نویسندگان: 

NIAZI MOHSEN | Mazrouie Esmaiel | Nouri Zahra

اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    13
  • شماره: 

    1
  • صفحات: 

    141-166
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    188
  • دانلود: 

    15
چکیده: 

Environment and its conservation is one of the present issues in risky modern life. Although, the present world has been improving during last years, it hasn’t been able to solve environmental problems and it has caused its deterioration. Littering in jungle, seashore, public places and passages is one of the significant environmental issues in society of Iran. The Purpose of the present study is investigation of the reasons of littering formation by the approach of Causal Layered Analyses (CLA) and planning scenario. The present study analyzed the layers forming the present social issue and searched the origin of it. In order to accomplish this study, 15 experts in environment and society were interviewed by Qualitative and exploring method and applying deep interview technique. Then, after exploiting the contents and content analysis of interviews, their opinions presented in 4 forms as litany, systematic, discourse analysis and metaphor. By applying the present discourses, the gap between state-people and people-people were recognized as important variables and were applied in presenting scenario. Finally 4 scenarios presented in a diagram which can help strategists and officials of the society.

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بازدید 188

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نویسندگان: 

Baghernejhad Elnaz

اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    11
  • شماره: 

    2
  • صفحات: 

    29-60
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    178
  • دانلود: 

    29
چکیده: 

ABSTRACT Despite a wide range of components and criteria affecting travel Behavior presented through empirical research, the results of these studies are inconclusive, which could be due to the difference between these components and criteria in the study areas. Therefore, this research presented a method to determine which Factors in different physical developments affect travel Behavior due to the differences in various physical developments. The required information was collected through 271 questionnaires at the level of three neighborhoods of Monirieh, Koye Bimeh, and Koye Golestan in Tehran, Iran, as the old, conventional, and new neighborhoods, respectively. ANOVA test was exerted to analyze the significant difference between different development patterns in three neighborhoods. Dunnett's T3 was applied to determine which neighborhood caused the difference between groups. Also, the Factors affecting travel Behavior were obtained based on exploratory Factor analysis indicators. Finally, by comparing the results of the ANOVA test and regression analysis, it was discovered that Factors such as car ownership, dependence and pro-liking for private cars, density and access to educational centers and parks, access to medical and service centers, and variety and density of retail stores had been introduced as the Factors affecting travel Behavior due to the differences in development patterns. However, proximity to the public transportation station, accessibility preferences in choosing a residence, dependence, and pro-liking for other than a private car, having a license, number of children under five years old, and age have influenced travel Behavior regardless of the variation between neighborhoods. Extended Abstract Introduction Finding Factors affecting travel Behavior has been one of the main concerns of transportation planners. However, in the last two decades, the importance of the influence of the features of the built environment, including land use, along with demographic-economic characteristics, travel Behavior, and attitudes of people, has been raised by urban planners. Studies seek to find Factors affecting travel Behavior, especially land use characteristics. Despite presenting a wide range of components and criteria affecting travel Behavior, the results of the studies are inconclusive, which could be due to the difference between these components and criteria in the study areas. Therefore, this research presented a method to determine which Factors in different physical developments affect travel Behavior due to the differences in various physical developments. In order to do this, it must first be determined whether the study areas/different development patterns have a significant difference in terms of travel Behavior or not. In case of a positive answer to the previous question, the following question is which study areas caused this difference. The next question arises: -Which physical and non-physical characteristics affect travel Behavior due to distinctions between different development patterns?   Methodology The present research method is analytical and experimental based on quantitative methods. This research chose the frequency of travel by private car, public transportation, and walking as the travel Behavior. According to the research's purpose, indicators and criteria affecting travel Behavior were extracted after reviewing the theoretical and experimental literature. Then, the required information was collected through 271 questionnaires at the level of three neighborhoods of Monirieh, Koye Bimeh, and Koye Golestan as the old, conventional, and new neighborhoods, respectively. The questionnaire was compiled as a Likert scale in five parts of travel information, demographic-economic characteristics, perceptual characteristics of land use, travel habits, and access preferences of people in choosing their residence. ANOVA test was used to analyze the significant difference between different groups of a characteristic (here, different development patterns or the three case studies). Dunnett T3 was exerted to determine which neighborhood caused the difference between groups. Also, the Factors affecting travel Behavior were obtained based on exploratory Factor analysis indicators. Finally, by comparing the results of the ANOVA test and regression analysis, it was discovered which Factors affecting travel Behavior were due to the differences in study areas and which Factors affect travel Behavior regardless of development patterns.   Results and discussion This research aims to identify the Factors affecting travel Behavior due to the differences in development patterns. In this regard, the findings in line with the first research question show that the frequency of three modes of travel, by private car, transportation, and pedestrian, differ significantly in the three neighborhoods. Furthermore, ANOVA test results depict that there is a significant difference between these three neighborhoods in terms of Factors affecting travel Behavior, such as perceptually environmental characteristics of the neighborhood, dependence and pro-liking for personal cars, variety and density of retail stores, density and access to educational units and parks, access to medical and service centers, and car ownership. Finally, by comparing the results of the ANOVA test with the regression analysis assessing the relationship between physical and non-physical Factors (the same indicators in the same study areas) with travel Behavior, the Factors affecting travel Behavior owing to different development patterns were identified. Factors such as car ownership, dependence and pro-liking for private cars, density and access to educational units and parks, access to medical and service centers, and variety and density of retail stores have been introduced as the Factors affecting travel Behavior due to the differences in development patterns. However, proximity to the public transportation station, accessibility preferences in choosing a place of residence, dependence, and pro-liking for other than a private car, having a certificate, number of children under five years old, and age have influenced on travel Behavior regardless of the variation between neighborhoods (different physical development patterns).   Conclusion In In order to discover the Factors affecting travel Behavior due to the differences in patterns of physical development, this research has provided a more detailed analysis of the Factors affecting travel Behavior. It has achieved more accurate components than previous studies in this regard. Detailed analysis of studies related to travel Behavior and finding the main components affecting it, considering the extent of variables and data, can pave the way for professionals in transportation planning and urban planning, in addition to providing detailed methods and criteria in the related literature.   Funding There is no funding support.   Authors’ Contribution Authors contributed equally to the conceptualization and writing of the article. All of the authors approved thecontent of the manuscript and agreed on all aspects of the work declaration of competing interest none.   Conflict of Interest Authors declared no conflict of interest.   Acknowledgments  We are grateful to all the scientific consultants of this paper.

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نویسندگان: 

نشریه: 

Communications

اطلاعات دوره: 
  • سال: 

    0
  • دوره: 

    46
  • شماره: 

    4
  • صفحات: 

    516-539
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    143
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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بازدید 143

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همکاران: 

محمدحسین-حمیدی

کارفرما: 

جهاد دانشگاهی

اطلاعات : 
  • تاریخ پایان: 

    دی 1386
تعامل: 
  • بازدید: 

    292
کلیدواژه: 
چکیده: 

احراز هویت دوگانه به روز ترین روش تامین امنیت دسترسی به منابع شبکه می باشد. این روش در عین سادگی و کم هزینه بودن، امنیت دسترسی به منابع رایانه ای را تا حد قابل توجهی افزایش می دهد. این طرح راهکاری را ارائه خواهد داد که با بهره گیری از مزایای احراز هویت دوگانه روشی مقرون به صرفه جهت پیاده سازی انبوه این نوع از احراز هویت در سطح کشور ارائه خواهد کرد. از آنجایی که بیش از90 درصد از سیستم های احراز هویت در داخل و حتی خارج از کشور بر مبنای کلمات عبور ثابت، قابل استفاده مجدد و قابل حدس مورد استفاده قرار می گیرند که این مساله خود بزرگترین مشکل امنیتی در مورد آنها تلقی می شود. به دیگر سخن، با افزایش امنیت تمامی بخش های جانبی مرتبط با فرآیند احراز هویت نیز نمی توان این ضعف ذاتی سیستم های سنتی را نادیده انگاشت. در این پروژه مطالعات اولیه روی روش های احراز هویت دوگانه انجام و یکی از این روش ها به صورت نرم افزاری پیاده سازی گردید.

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بازدید 292

نویسندگان: 

GHODRATI AMIRI G. | AMIRABADI M.

اطلاعات دوره: 
  • سال: 

    2004
  • دوره: 

    15
  • شماره: 

    2
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    289
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

Moment resisting frame system and concentric braced frame system are two systems that are used widely in earthquake resistant buildings. But none of them can respond stiffness and ductility demands simultaneously caused by severe earthquakes. In this study, seismic Behavior of knee braced frame system (as a suggested solution to remove this problem), has been investigated. In this system at least one end of braced element, instead of connection to intersection point of beam-column, is connected to inclined knee element that is located between beam and column. Braced element supplies the stiffness of system, whiles the ductility under severe lateral loads, and is secured by flexural yielding of knee element. The knee element acts as a ductile fuse and prevents buckling of braced element. In this research, the Behavior of knee braced system with different sizes under El Centro earthquake by non-linear Drain-2DX software was examined. This study is done for frames with 5, 10, 15 and 20 stories. Finally, the effect of building height on the Behavior Factor is investigated.

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اطلاعات دوره: 
  • سال: 

    1386
  • دوره: 

    23
  • شماره: 

    1-40 (ویژه مهندسی عمران)
  • صفحات: 

    35-42
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    2467
  • دانلود: 

    562
کلیدواژه: 
چکیده: 

در این نوشتار بعد از نگاهی گذرا به اهمیت ضریب رفتار و کاربرد آن در سازه ها، محتوای این ضریب و عوامل موثر بر مقدار آن مورد بررسی قرار گرفته است. همچنین نحوه محاسبه این ضریب توسط یکی از روش های متداول، یعنی روش ارایه شده توسط فریمن مورد بررسی قرار گرفته است. سپس پارامترهای مورد استفاده در این تحقیق برای محاسبه ضریب رفتار ارایه شده و ضرایب رفتار قاب های دوبعدی مهاربندی شده هم محور فولادی، به دو صورت ضربدری و L شکل، با در نظر گرفتن درصد گیرداری تیر به ستون و پای ستون، و نیز درصد سخت شدگی کرنش به صورت نسبی از مدول یانگ محاسبه شده است؛ و در نهایت مقادیر بدست آمده مورد بحث و بررسی قرار گرفته است.

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اطلاعات دوره: 
  • سال: 

    1397
  • دوره: 

    9
  • شماره: 

    31
  • صفحات: 

    175-190
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1116
  • دانلود: 

    441
چکیده: 

مقدمه: پژوهش حاضر با هدف بررسی ویژگی های روان سنجی و ساختار عاملی نسخه فارسی مقیاس پنج عاملی رفتار تکانشی انجام شد. روش کار: تعداد 352 نفر به شیوه نمونه گیری در دسترس از بین جمعیت عمومی 60-18 شهر تهران انتخاب و با استفاده از مقیاس پنج عاملی رفتار تکانشی، مقیاس دشواری در تنظیم هیجان و پرسشنامه های محقق ساخته در زمینه مصرف مواد و رفتار جنسی پرخطر مورد ارزیابی قرار گرفتند. داده ها بر مبنای آزمون آلفای کرونباخ، آزمون های همبستگی، تحلیل واریانس چند متغیره و تحلیل عاملی اکتشافی و با استفاده از نسخه 22 نرم افزار spss مورد تحلیل قرار گرفت. یافته ها: پایایی همسانی درونی مقیاس رفتار تکانشی در دامنه ای بین 74/0 تا 90/0 قرار داشت. نتایج حاصل از تحلیل عاملی اکتشافی نشان دهنده تأیید ساختار عاملی مقیاس اصلی با تعداد کمتری از عامل ها بود. روایی ملاکی مقیاس تکانشگری با بررسی همبستگی بین نمرات ابعاد تکانشگری و مقیاس دشواری در کنترل تکانه حاکی از همبستگی مثبت معنادار بین دشواری در کنترل تکانه و فوریت مثبت (01/0>P، 62/0=r)، فوریت منفی (01/0>P، 61/0=r)، فقدان تأمل (01/0>P، 36/0=r)، فقدان پشتکار (01/0>P، 31/0=r) و هیجان خواهی (05/0>P، 13/0=r) بود. همچنین، نمرات ابعاد این مقیاس قادر بودند بین افرادی با مصرف مواد (01/0>P، 17/11=F) و افراد دارای رفتار جنسی پرخطر (01/0>P، 80/18=F) و افراد عادی تمایز قائل شوند. نتیجه گیری: نسخه فارسی مقیاس پنج عاملی رفتار تکانشی از روایی و پایایی قابل قبولی برخوردار است و می تواند جهت پیش بینی انواع مختلفی از رفتارهای پرخطر، از جمله مصرف مواد و رفتار جنسی پرخطر، مورد استفاده قرار گیرد.

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