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1 |
Head tremor in cervical dystonia: Quantifying severity with computer vision
لرزش سر در دیستونی دهانه رحم: کمی کردن شدت با دید کامپیوتری-2022 Background: Head tremor (HT) is a common feature of cervical dystonia (CD), usually quantified by subjective
observation. Technological developments offer alternatives for measuring HT severity that are objective and
amenable to automation.
Objectives: Our objectives were to develop CMOR (Computational Motor Objective Rater; a computer vision-
based software system) to quantify oscillatory and directional aspects of HT from video recordings during a
clinical examination and to test its convergent validity with clinical rating scales.
Methods: For 93 participants with isolated CD and HT enrolled by the Dystonia Coalition, we analyzed video
recordings from an examination segment in which participants were instructed to let their head drift to its most
comfortable dystonic position. We evaluated peak power, frequency, and directional dominance, and used
Spearman’s correlation to measure the agreement between CMOR and clinical ratings.
Results: Power averaged 0.90 (SD 1.80) deg2/Hz, and peak frequency 1.95 (SD 0.94) Hz. The dominant HT axis
was pitch (antero/retrocollis) for 50%, roll (laterocollis) for 6%, and yaw (torticollis) for 44% of participants.
One-sided t-tests showed substantial contributions from the secondary (t = 18.17, p < 0.0001) and tertiary (t =
12.89, p < 0.0001) HT axes. CMOR’s HT severity measure positively correlated with the HT item on the Toronto
Western Spasmodic Torticollis Rating Scale-2 (Spearman’s rho = 0.54, p < 0.001).
Conclusions: We demonstrate a new objective method to measure HT severity that requires only conventional
video recordings, quantifies the complexities of HT in CD, and exhibits convergent validity with clinical severity
ratings. keywords: لرزش سر | ویدیو | بینایی کامپیوتر | درجه بندی شدت | TWSTRS | Head tremor | Video | Computer vision | Severity rating | TWSTRS |
مقاله انگلیسی |
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Accounts of NGO performance as calculative spaces: Wild Animals, wildlife restoration and strategic agency
حساب های عملکرد سازمان های غیر دولتی به عنوان فضاهای محاسباتی: حیوانات وحشی، ترمیم حیات وحش و آژانس استراتژیک-2021 Whereas corporations typically share a common primary objective of generating profits for their
owners, non-governmental organisations (NGOs) principally pursue a panoply of various social
and/or ecological objectives. Accordingly, an NGO’s performance in pursuit of its objectives can
rarely be accounted for in straightforwardly comparable quantitative terms. How then can an
NGO instead construct qualitative accounts of its performance that show how it makes a differ-
ence in pursuit of its objectives? This paper examines qualitative accounts of performance against
an objective to restore wildlife, which are included in the annual reports of a large conservation
NGO. These accounts are conceptualised as being calculative spaces, configured by framing work
being done within these accounts. Analysis of this framing work finds that these accounts identify
a performance object (i.e. specific wild animal populations), establish relations that seemingly
affect this performance object (i.e. threats to wild animal populations and actions to conserve
these populations), and attribute the NGO with agency to make a difference to this performance
object (i.e. as a strategic actor directing and co-ordinating wildlife restoration). Thus, this paper
demonstrates that seeing quantitative and qualitative accounts of organisational performance in
the same conceptual terms creates conditions of possibility for developing a fuller understanding
of an organisation’s calculations of its own capacity to act upon society. keywords: سازمان غیر دولتی | مسئوليت | کادر بندی | محاسبات | گفتمان | حفاظت | NGO | Accountability | Framing | Calculation | Discourse | Conservation |
مقاله انگلیسی |
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Corporate accounting information disclosure based on FPGA and neural network
افشای اطلاعات حسابداری شرکت بر اساس FPGA و شبکه عصبی-2021 Corporate accounting information is a measure of the company’s accounting and external reporting systems. It is
routinely disclosed, which is quantitative data on its financial position and performance audit. The corporate
accounting information system contains confidential information that needs to be secured. The consequences of
unauthorized access are data loss from identity theft issues. To solve the problem, encrypt and decrypt the
sensitive corporate accounting information and product the data using the proposed algorithm Neural Network
(NN) and Field Programmable Gate Array (FPGA) is used to classify the corporate accounting information
authorized person and unauthorized person. When one authorized user accesses the corporate account infor-
mation, it generates the secret critical process. The proposed algorithm unauthorized person cannot access the
information is not allowed for stealing. Encryption is the process of converting to something as random and
meaningless as direct text data. Decryption is the process of restoring the ciphertext plaintext. keywords: اطلاعات حسابداری شرکت | شبکه عصبی (NN) | fpga | فرد مجاز | شخص غیر مجاز | رمزگذاری | رمزگشایی | Corporate accounting information | Neural network (NN) | FPGA | Authorized person | Unauthorized person | Encryption | Decryption |
مقاله انگلیسی |
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Comparison of tree-ring and eddy-covariance derived annual ecosystem production estimates for jack pine and trembling aspen forests in Saskatchewan, Canada
مقایسه برآورد سالانه تولید اکوسیستم حلقه درختی و گردابی گردابی برای جنگل های کاج و لرزان در ساسکاچوان کانادا-2021 Reliable projections of future carbon (C) dynamics are essential to resource management decision making under a changing climate. Additional corroborative data may reduce uncertainty in C flux estimates. Here we use a tree- ring based hybrid biometric modelling approach to estimate annual ecosystem production at jack pine (Pinus banksiana) and aspen (Populus tremuloides and Populus balsamifera) plots co-located with eddy-covariance installations in the boreal forest of Saskatchewan, Canada for a 28 year (1985 to 2012) period. Correspondence between tree-ring and eddy-covariance derived estimates was better for jack pine (14-year overlap, 1999 to 2012) than aspen (16-year overlap, 1997 to 2012), and better for some C fluxes than others. In particular, tree- ring estimates of annual and cumulative net ecosystem production were larger than eddy-covariance derived estimates for the overlapping period. Allometric equations, belowground production, and biomass turnover could neither be confirmed nor ruled out as causes of discrepancy, but a lower stand density and higher carbon use efficiency would together reduce observed differences for aspen. Tree-ring based estimates of biomass increment or net primary production showed good temporal correspondences with both current and previous year eddy-covariance analogues, and net and gross primary production. Similar comparisons for net ecosystem production and heterotrophic respiration had mixed results. This study improves on previous work by comparing independent estimates of the same fluxes quantities and demonstrates the value of tree-ring data for evaluating C flux estimates. Keywords: CBM-CFS3 | Climate change | Greenhouse Gas | Heterotrophic respiration | Net ecosystem production | Net primary production |
مقاله انگلیسی |
5 |
The relation between non-GAAP earnings and accounting restatements: Evidence after regulation G
رابطه بین درآمد غیر GAAP و بازپرداخت حسابداری: شواهد پس از مقررات G-2021 Scholarly findings on whether disclosure of Non-GAAP earnings is informative or opportunistic are inconsistent.
Since the 2003 implementation of Regulation G, investors can view managements process of adjusting from
GAAP earnings to Non-GAAP earnings. This study investigates the information content of Non-GAAP earnings in
the context of restatements. The hypotheses of this study are based on the following two propositions. First, the
IN formativeness of Non-GAAP earnings is determined by the nature of items excluded from GAAP earnings to
derive Non-GAAP earnings (either nonrecurring special items or recurring exclusions). Second, restatements can
be used to distinguish between informative and opportunistic Non-GAAP earnings disclosures. My results show
that firms with restatements, especially fraud or core earnings restatements, exhibit greater relative use of Non-
GAAP earnings disclosures that adjust GAAP earnings for positive other exclusions (recurring expenses). By
contrast, disclosures of Non-GAAP earnings derived by excluding nonrecurring expenses (special items) from
GAAP earnings are not associated with restatements.
keywords: درآمد غیرقانونی | تسهیلات حسابداری | مدیریت تعهدات | مدیریت فعالیت های واقعی | Non-GAAP earnings | Accounting restatements | Accruals management | Real activities management |
مقاله انگلیسی |
6 |
Improving students’ satisfaction and learning performance using flipped classroom
بهبود رضایت و عملکرد یادگیری دانش آموزان با استفاده از کلاس واگردی-2020 Flipped learning have emerged in the last decade to make students’ learning more active and to enhance learning performance and students’ motivation and engagement. These new approaches have been applied to different subjects at different educational levels. Specifically, in higher education most studies have focused on STEM subjects (see Lundin et al., 2018). In this paper, we present an experience about flipped classroom in two courses related to business management in a Spanish university. Results show that students are very satisfied with the experience and with the summative-formative assessment that has been used. In addition, students consider that their learning process has been better with this new methodology. Certainly, academic results have been improved with flipping courses, compared with traditional lectures. However, this type of methodology implies several challenges for both professors and students (some of them demonstrate resistance) and some limitations must also be considered. Keywords: Flipped classroom | Student satisfaction | Learning performance | Formative assessment | Higher education |
مقاله انگلیسی |
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توسعه معیاری برای بازاریابی کارآفرینانه: آشکارسازی چارچوب درونی آن و پیش بینی عملکرد
سال انتشار: 2020 - تعداد صفحات فایل pdf انگلیسی: 11 - تعداد صفحات فایل doc فارسی: 34 بازاریابی کارآفرینانه (EM) یک مفهوم بازاریابی برای شرکت هایی در نظر گرفته می شود که تلاش می کنند برنامه های بازاریابی کارآفرینانه، بازار محور و همچنین مشتری مدار را ایجاد کنند، که این برنامه ها در شرایط محدودیت های منابع بخوبی عمل کنند. با این وجود، حتی پس از گذشت سه دهه از پیدایش آن، محققان همچنان بر اعتبارسنجی ابعاد منحصربفرد مفهوم EM (چارچوب خارجی آن) تمرکز می کنند، اما نمی پرسند که نقطه مشترک این ابعاد چیست(چارچوب داخلی آن). این مقاله با استفاده از 1156 شرکت نمونه، یک معیار معتبر ایجاد می کند و تاثیر آن بر عملکرد شرکت را تحلیل می کند. نتایج نشان می دهند که EM شامل سه بعد بهم پیوسته می باشد: 1) تغییر محور، 2) خود گردان سازی، و 3) ریسک پذیر است که تاثیر مثبتی بر عملکرد شرکت دارند
واژگان کلیدی: بازاریابی کارآفرینانه | ایجاد معیار | جهت گیری کارآفرینانه | جهت گیری مشتری | بهره برداری از منابع | بازار محور
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مقاله ترجمه شده |
8 |
Study on the motion law of aerosols produced by human respiration under the action of thermal plume of different intensities
مطالعه در مورد قانون حرکات ذرات معلق در هوا که توسط تنفس انسان تحت اثر ستون های حرارتی با شدت های مختلف تولید می شود-2020 Predicting influence of human thermal plume on the diffusion of respiration-produced particles is an important
issue for improving indoor air quality through eliminating infectious microbes efficiently. In this study, the Large
Eddy Simulation was utilized to predict the effects of thermal plume of different intensities on particle diffusion.
Three postures of the human body model and three room temperatures were considered. The results show that
the convective heat transfer coefficient on the surface of the human body varies greatly with different postures.
The coefficient is the largest when the model is in sitting posture, leading to the greatest heat transfer rate.
Meanwhile, the thermal plume generated by bending the thigh increases the size of the facial thermal plume in
horizon direction. The increase of the difference between indoor temperature and skin temperature causes an
increase of the convective heat transfer of the manikin, leading to stronger airflow in front of the face. The
thicker and faster the human thermal plume is, the more difficult it is penetrated by aerosols produced by nasal
breathing, finally resulting in most particles distributed within 0.2m thick under the roof. Keywords: Thermal plume | Large eddy simulation| Aerosol | Nasal breathing | Computational fluid dynamics |
مقاله انگلیسی |
9 |
Creditors holdup, releveraging and the setting of private appropriation in a control contract between shareholders
توقیف طلبکاران، جذب مجدد و تنظیم تخصیص خصوصی در یک قرارداد کنترلی بین سهامداران-2020 Debt is analyzed in relation to the conflict between three parties, a controlling shareholder, outside
investors and creditors. We follow Jensen and Meckling’s (1976) and Myers’ (1977) intuitions that leverage may result in excess value appropriation by creditors while at the same time acting to discipline
private benefits appropriation. Creditors’ holdup refers to the appropriation by the incumbent debtholders of a large part of the additional value created by an incentivized controlling shareholder. This paper
introduces a negotiation framework between controlling and outside shareholders in which releveraging
and private benefits are decided while the process of value creation initiates a transfer of value to the
creditors. The admissible contracts of control involve a minimum jump in leverage. This result gives a
theoretical foundation for the leveraged recap decisions observed in the market and one-off variations
of the capital structure. Keywords: Creditors’ holdup | Private benefits | Controlling shareholder | Debt leverage | Releveraging | Corporate governance |
مقاله انگلیسی |
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Isolating residents including wandering residents in care and group homes: Medical ethics and English law in the context of Covid-19
منزوی کردن ساکنان از جمله ساکنان سرگردان در خانه های مراقبتی و گروهی: اخلاق پزشکی و قانون انگلیس در زمینه کووید-19-2020 This article investigates the lawfulness of isolating residents of care and group homes during the COVID-19 pandemic. Many residents are mobile, and their freedom to move is a central ethical tenet and human right. It is not however an absolute right and trade-offs between autonomy, liberty and health need to be made since COVID-19 is highly infectious and poses serious risks of critical illness and death. People living in care and group homes may be particularly vulnerable because recommended hygiene practices are difficult for them and many residents are elderly, and/or have co-morbidities. In some circumstances, the trade-offs can be made easily with the agreement of the resident and for short periods of time. However challenging cases arise, in particular for residents and occupants with dementia who‘wander’, meaning they have a strong need to walk, sometimes due to agitation, as may also be the case for some people with developmental disability (e.g. autism),or as a consequence of mental illness.This article addresses three central questions: (1) in what circumstances is it lawful to isolate residents of social care homes to prevent transmission of COVID-19, in particular where the resident has a strong compulsion to walk and will not, or cannot, remain still and isolated? (2) what types of strategies are lawful to curtail walking and achieve isolation and social distancing? (3) is law reform required to ensure any action to restrict freedoms is lawful and not excessive? These questions emerged during the first wave of the COVID-19 pandemic and are still relevant. Although focussed on COVID-19, the results are also relevant to other future outbreaks of infectious diseases in care and group homes. Likewise, while we concentrate on the law in England and Wales, the analysis and implications have international significance. |
مقاله انگلیسی |