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نتیجه جستجو - اقتصادی

تعداد مقالات یافته شده: 583
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1 بازاریابی جاذبه ای دیجیتال: اندازه گیری عملکرد اقتصادی تجارت الکترونیکی خواروبار در اروپا و آمریکا
سال انتشار: 2021 - تعداد صفحات فایل pdf انگلیسی: 13 - تعداد صفحات فایل doc فارسی: 30
این تحقیق به بررسی رابطه هزینه-نتیجه اقدامات بازاریابی جاذبه ای مورد استفاده تجارت الکترونیکی خواروبار می پردازد. این تحلیل بر اساس به کارگیری مدل درفمن و استینر (1954) برای بودجه تبلیغات بهینه است که مولفین آن را با بازاریابی دیجیتال تطبیق می دهند و با تحلیل آماری تجاری تایید میکنند. با توجه به 29 شرکت عمده در شش کشور در افق زمانی شش سال، تحلیل ترکیبی تکنیک های بهینه سازی موتور جستجو و بازاریابی موتور جستجو هدف جذب کارکنان به صفحات وب شرکت ها را دنبال می کند. نتایج تایید می کند که تجارت الکترونیکی بازاریابی جاذبه ای دیجیتال را بهینه سازی می کند. تفاوت ها بسته به نوع فرمت و سطح کشور فرق دارند.
واژگان کلیدی: بازاریابی جاذبه ای | بازاریابی دیجیتال | تجارت الکترونیک | خرده فروشی | عملکرد اقتصادی | بهینه سازی سرمایه گذاری بازاریابی.
مقاله ترجمه شده
2 Knowledge Diffusion and economic Growth based on Fourier’s law
انتشار دانش و رشد اقتصادی براساس قانون فوریه-2020
Learning is the basic thing for a person’s growth, whenever in school or on the work. Also the economic growth of a country depends its technology and science. The knowledge diffusion in a firm dynamic system is important. Some former models have been given by Fernando E. Alvarez, Francisco J. Buera and Robert E. Lucas, Jr’s paper: “Models of Idea Flows” (Alvarez et al., 2008). Our model based on the earlier work but extend the definition of spread direction based on Fourier’s law, in which case can also explain the asymptotic equilibrium state. Solving the partial differential equation helps us to learn the solution well. A simulation is given using finite difference method to sketch the curve moving, also comparing with the realistic economic curves and they are fit. It can well explain the economic stable in the closed system of a single country and a “huge” change under some special outside “source” power.
Keywords: Knowledge diffusion | Economic growth | Fourier’s law | Finite difference method | Partial differential equation
مقاله انگلیسی
3 The effects of Chile’s 2005 traffic law reform and in-country socioeconomic differences on road traffic deaths among children aged 0-14 years: A 12-year interrupted time series analysis
اثرات اصلاح قانون راهنمایی و رانندگی در سال 2005 شیلی و اختلافات اقتصادی و اجتماعی درون کشور در مورد مرگ و میر در جاده های کودکان در سن 0-14 سال: تجزیه و تحلیل قطع 12 ساله سری های زمانی -2020
Objectives: This study assessed the effect of Chile’s 2005 traffic law reform (TLR) on the rates of road traffic deaths (RTD) in children aged 0–14 years, adjusting for socioeconomic differences among the regions of the country. Methods: Free-access sources of official and national information provided the data for every year of the study period (2002–2013) and for each of the country’s 13 upper administrative divisions with respect to RTD in child pedestrians and RTD in child passengers (dependent variables), and the following control variables: the number of road traffic tickets processed, investment in road infrastructure, poverty, income inequality, insufficient education, unemployment, population aged 0–14 years, and prevalence of alcohol consumption in the general population. Interrupted time series analyses (level and slope change impact model), using generalized estimating equation methods, were conducted to assess the impact of the TLR (independent variable) on the dependents variables. Results: There was a significant interaction between time and Chile’s 2005 TLR for a reduction in child pedestrians (incidence rate ratio [IRR] 0.87, 95% confidence interval [CI] 0.79-0.96) and passengers RTD (IRR for interaction 0.80, 95% CI 0.67-0.96) trends. In addition, in child pedestrians, RTD rates were affected by poverty (IRR 1.04, 95% CI 1.02–1.05), income inequality (IRR 1.02, 95% CI 1.00–1.04), and unemployment (IRR 0.94, 95% CI 0.90-0.98), whereas in the case of child passengers, poverty (IRR 1.05, 95% CI 1.01–1.08) and income inequality (IRR 0.93, 95% CI 0.91-0.95) were significant. Conclusions: Large-scale legislative actions can be effective road safety measures if they are aimed at promoting behavioral change in developing countries, improving the safety of children on the road. Additionally, regional socioeconomic differences are associated with higher RTD rates in this population, making this an argument in favor of road safety policies that consider these inequalities. The number of road traffic tickets processed and the investment in road infrastructure were not significant.
Keywords: Safety management | Child | Traffic accidents | Mortality | Socioeconomic factors
مقاله انگلیسی
4 Board of director attributes and CSR engagement in emerging economy firms: Evidence from across Asia
ویژگی های هیئت مدیره و مشارکت CSR در بنگاه های اقتصادی در حال ظهور: شواهدی از سراسر آسیا-2020
This study investigates the relationship between the board of director attributes and corporate social responsibility (CSR) engagement across a sample of Asian emerging economy firms. We find a statistically positive relationship between CSR engagement and several directors’ attributes including their political influence, international experience, business expertise, other director- ships held and independence from management. These empirical results indicate that while corporate governance recommendations designed for developed economy firms are relevant for emerging economy firms, additional director attributes are also important in encouraging CSR engagement in emerging economy firms given the divergent institutional and resource de- pendency issues they face.
Keywords: Corporate social responsibility | Board of director attributes | Corporate governance | Emerging economy firms
مقاله انگلیسی
5 Mobile phone network data reveal nationwide economic value of coastal tourism under climate change
ارزش اقتصادی داده های شبکه تلفن همراه در سراسر جهان از گردشگری ساحلی در اثر تغییر آب و هوا-2020
The technology-driven application of big data is expected to assist policymaking towards sustainable development; however, the relevant literature has not addressed human welfare under climate change, which limits the understanding of climate change impacts on human societies. We present the first application of unique mobile phone network data to evaluate the current nation-wide human welfare of coastal tourism at Japanese beaches and project the value change using the four climate change scenarios. The results show that the projected national economic value loss rates are more significant than the projected national physical beach loss rates. Our findings demonstrate regional differences in recreational values: most southern beaches with larger current values would disappear, while the current small values of the northern beaches would remain. These changes imply that the ranks of the beaches, based on economic values, would enable policymakers to discuss management priorities under climate change.
Keywords: Adaptation | Beach recreation | Big data | Climate change | Coastal tourism | Ecosystem services | Travel cost method | Sea level rise
مقاله انگلیسی
6 Techno-economic evaluation of PV based institutional smart microgrid under energy pricing dynamics
ارزیابی فنی و اقتصادی میکروگرید هوشمند نهادی مبتنی بر PV تحت پویایی قیمت گذاری انرژی-2020
The solar photovoltaic (PV) system with battery energy storage have a lot of potential to provide reliable and cost-effective electricity and to contribute in micro-grid operation. However, the operational performance of such type of micro-grid system depends on many factors (e.g. techno-economic sizing, energy management among the sources, market energy prices dynamics, energy dispatch strategies, etc.). In this paper, a typical Indian institutional energy system has considered for techno-economic performance evaluation for operating as a smart micro-grid under market energy pricing dynamics. The institutional energy system has integrated PV, battery storage and DG for operating as a smart microgrid. An operational energy dispatch strategy for micro-grid has proposed and evaluated for maximizing the local energy resources utilization with contemplation of peak demand and grid outage conditions under market energy pricing dynamics. With techno-economic sizing of PV, battery and DG of considered system; the peak demand has reduced by 10%, DG contribution by 92% and annual energy savings by 45% compare to operation of base system. With proposed energy management strategy, the annual battery energy throughput has increased from 0.4% to 10%, and the DG’s contribution has decreased from 7% to 5% with 10% reduction in levelized cost of energy (CoE) compare to case with techno-economic sizing of PV, battery and DG for considered system. With inclusion of electrical energy pricing dynamics scenario, it has observed that the CoE has increased by 89% with change in time-of-use (ToU) tariff from 100% to 200% and considering energy-selling price to the grid at 100%. However, 8% reduction in the CoE has observed, when the energy-selling price to grid has increased from 100% to 200% at ToU of 100%. The results from this work are going to be useful for developing electrical tariff policies for promoting the PV based institutional micro-grid system under market energy pricing dynamics.
Keywords: Smart micro-grid | Market energy pricing dynamics | Techno-economics | Solar photovoltaic | Energy management strategy
مقاله انگلیسی
7 Enhancement the economical and environmental aspects of plus-zero energy buildings integrated with INVELOX turbines
تقویت جنبه های اقتصادی و زیست محیطی ساخت انرژی بالای صفر که با توربینهای بادی INVELOX یکپارچه شده اند-2020
A multi-objective energy management strategy for a plus-zero energy building during a year, incorporating renewable resources, air to water heat pump, micro-CHP, ventilation, energy storage systems and thermal-cooling-electrical loads have been proposed in this paper. In this strategy, a novel technology of wind turbine that has been known as INVELOX has been investigated and collaborated in ZEB planning to reach efficient plus-ZEB at lower cost and pollution. As well the building can sell and buy power to/from the upstream network. The total cost and pollution of the building have been considered as objective functions. Also, the effect of objective function priority on the planning of the building has considered. To make the results more realistic the wind speed and solar radiation of Kermanshah city in Iran have been used. The presented problem has modeled as a mixed-integer linear programming and the Epsilon constraint method and fuzzy satisfying approach have been used to solve and obtain the best solution. The final results show reducing the total cost and pollution by about 34.6% and 51.2% in cost priority, also 28.7% and 54.7% in pollution priority respectively, also increment in surplus power to sell to the grid and getting closer to reach plus-ZEB concept.
Keywords: Building energy management | Fuzzy satisfying | INVELOX wind turbine | Multi-objective optimization | Plus-zero energy building | Sustainable building
مقاله انگلیسی
8 زنجیره های تأمین پایدار - تأثیر فناوری های تحول دیجیتال بر ابعاد اجتماعی و زیست محیطی
سال انتشار: 2020 - تعداد صفحات فایل pdf انگلیسی: 7 - تعداد صفحات فایل doc فارسی: 9
در این تحقیق، یافته هایی در ارتباط با چشم انداز اجرای فناوری های تحول دیجیتال (DTT) به منظور دستیابی به فرآیندهای پایدار در تدارکات و مدیریت زنجیره تامین شرکت های تولیدی ارائه شده است.DTT می تواند از نظر بهره وری انرژی ، کاهش فواصل انتقال و توزیع و بهینه سازی منابع تدارکات بهبود یابد. این تحقیق براساس مطالعات موردی کیفی در میان تولیدکنندگان انجام شده است. به دلیل اینکه تحقیقات فعلی اغلب بر بعد اقتصادی متمرکز است، تأکید ویژه ای بر پایداری اجتماعی و محیطی شده است. نتایج نشان می دهد که استقرار DTT در تدارکات و مدیریت زنجیره تأمین به طور متوسط تأثیر مثبتی بر بعد پایداری زیست محیطی و اجتماعی دارد.
کلمات کلیدی: تحول دیجیتال | مدیریت زنجیره تامین | تدارکات | فناوری ها | پایداری
مقاله ترجمه شده
9 مروری سیستماتیک بر مدیریت منابع انسانی سبز : پیامدهایی برای پایداری اجتماعی
سال انتشار: 2020 - تعداد صفحات فایل pdf انگلیسی: 65 - تعداد صفحات فایل doc فارسی: 55
این مقاله پیشرفتهای فعلی و شکافهای تحقیقاتی را در زمینه ادبیات مدیریت منابع انسانی سبز را مورد بررسی قرار میدهد و همچنین به بررسی شیوه های سبز در اینده و در مواجه با امور اجتماعی و الزامات پایداری یک سازمان میپردازد. با در نظر گرفتن افزایش اگاهی در مورد مفهوم سبز بودن و پایداری، یک بررسی سیستماتیک در زمینه ادبیات بصورت خاص انجام شده است که در آن از پایگاه داده های اسکوپوسScopus / و گوگل اسکالر/ Google Scholar استفاده شده است که منجر به انجام مجموعه ایی از 174 مطالعه در بین سالهای 1995 تا 2019 شد. در این مطالعه از نرم افزار NVivo Plus نسخه 12 برای پردازش کمی و همچنین تجزیه و تحلیل کیفی داده ها استفاده شد. کدگذاری محتوا و تجزیه و تحلیل خوشه ای انجام شد، که نتایج آن سه خوشه مجزا بنامهای شیوه های مدیریت منابع انسانی سبز، رفتار سبز کارکنان در محل کار و ثبات سازمانی را به نمایش گذاشتند. تجزیه و تحلیل دستی بیشتر نشان داد پایداری اجتماعی بعنوان یکی از حداقل حوزه های فراتر از ارکان اقتصادی و زیست محیطی پایداری است. از اینرو، نویسندگان بصورت مفهومی یک مدل نظری ارایه دادند که نشان دهنده نقش میانجی گری رفتار سبز کارکنان در محل کار در ارتباط با شیوه های مدیریت منابع انسانی سبز و ثبات اجتماع سازمانهایی است که از رویکرد نظریه داده بنیاد استفاده میکنند. این مطالعه اخرین تحقیقات مرتبط به تحقیقات مدیریت منابع انسانی سبز را بمنظور ثبات اجتماعی پیش بینی نشده را در زمینه ثبات اجتماعی مورد بررسی قرار میدهد، که تا کنون مورد ارزیابی قرار گرفته اند. بر اساس محتوای کدگذاری، خوشه بندی، و تجزیه و حلیل های بیشتر، گزاره ها ، مسیرها و پیامدهایی نیز برای آینده در نظر گرفته شده اند.
واژگان کلیدی: شیوه های مدیریت منابع انسانی سبز | رفتار سبز کارکنان در محل کار | ثبات سازمانی | مدیریت منابع انسانی پایدار | ثبات اجتماعی | تجزیه و تحلیل محتوا.
مقاله ترجمه شده
10 Economic feasibility valuing of deep mineral resources based on risk analysis: Songtao manganese ore - China case study
ارزیابی امکان سنجی اقتصادی منابع معدنی عمیق بر اساس ریسک تجزیه و تحلیل: سنگ معدن منگنز Songtao - مطالعه موردی چین-2020
The exploitation of deep mineral resources is an inevitable choice under economic development and resource shortage. Assessing the economic feasibility of deep mineral resource exploit projects is a prerequisite for resource industry development. Mining industry have some problems influence its economic feasibility, including long mining period, high infrastructure investment and lack flexibility, and have risks of geology instability and economic reserve degrade. On the other hand, with the increase of the buried depth of mineral resources, some problems have intensified the uncertainty of the profit of deep resource utilization project, such as high stress, high lithology, high temperature environment, and increase of upgrading cost. Net Present Value (NPV) and Internal Rate of Return (IRR) are traditional economic evaluation means which difficult to identify and assess risks precisely. Decoupled Net Present Value (DNPV) provides an efficiency tool to separate the time value and risk cost which is helpful to finds the real value of projects. A manganese mining project which is located Guizhou province, China is analyzed, paper choices several mainly risks of influence expected revenue to analysis project feasibility based on the DNPV technology, which includes the thickness of ore body, ore grade, market price, operation cost and nature disaster. The cost of potential environmental risk (carbon emission cost) also is analyzed. Paper constructs a risk management framework by risk identify, assess and classification, and analyzes the corresponding measures to reduce risk costs. The mainly risk cost of study case from market price shock and unexpected ore grade decline, which accounting for 80% of the total risk cost. In the process of deep mineral resources exploit, effective cost control measures can reduce the risk cost to a certain extent, including improving productivity, reducing unit cost of ore, improving mine sustainability and exploration accuracy. Green mineral construction is a feasible direction of deep resource utilization. For improve the accuracy of economic feasibility evaluation of deep mineral resources utilization, further improvement is needed in the selection and construction of different risk assessment model.
Keywords: Deep mining | Risk value assess | DNPV | Risk management | Songtao manganese
مقاله انگلیسی
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