نتایج جستجو برای: j40 e24 j21 واژگان کلیدی

تعداد نتایج: 50336  

2008
Harald Uhlig

Article history: Received 14 August 2007 Revised 8 July 2008 Available online 23 August 2008 JEL classification: J61 J64 E24 P23 R11 O33

2015

We show that frictions in labor and capital markets can be a source of competitive advantage for a¢ liates of corporate groups over standalone …rms in environments where bene…ts from internal markets’‡exibility are high. We argue that the advantage of ‡exibility in changing labor inputs is related to how di¢ cult it is to change capital inputs. We predict that if substituting labor with capital...

یکی از مباحث جدید در علوم قرآنی،زبان‌شناسی تخصصی قرآن است که امروزه‌ شاخه‌ای مهم از اسلوب‌های فهم قرآن شمرده می‌شود.یکی از شعبه‌های زبان‌شناسی نیز معنی‌شناسی است که در آن به بررسی واژگان کلیدی قرآن می‌پردازند،منظور از واژگان‌ کلیدی آن دسته از مفرداتی هستند که اگر با روشی میدانی ارزیابی معنایی شوند می‌توانند در تفسیر آیه و وجوه معنایی آن نقش بالایی داشته باشند.در این مقاله با توجه به شاخهء معناش...

چکیده: در زمینه تربیت، روش های گوناگونی وجود دارد. یکی از مداخلات تربیتی غیر مستقیم، «تغافل» است که تا کنون کمتر معیارهایی برای تعیین شرایط مناسب و حدود و ثغور به کار گیری آن ارائه شده و در دسترس مربیان قرار گرفته است. هدف از انجام این پژوهش، شناسایی مبانی انسان شناختی و اصول تربیتی زیربنایی «روش تغافل»، بررسی شرایط، حدود و ثغور و موارد کاربرد یا ممنوعیت کاربرد روش تربیتی تغافل است. روش پژوهش،‌...

Journal: :Applied economic perspectives and policy 2021

Abstract We estimate the impact of involuntary unemployment following employer shutdowns during COVID-19 pandemic on American households' past-week food expenditures, free receipt, and sufficiency, as well confidence about next month's adequacy Over April to June 2020, compared with households containing employed respondents, respondents who lost their jobs due coronavirus-induced firm closures...

2001
J. W. Winters

Enclosed is WCAP-1 5614, "AP1000 Seismic and Structural Design Activities." The report outlines our proposed approach to use design acceptance criteria in the areas of seismic analyses, structural design, and piping design for an AP1000 Design Certification application. We request your review of this report as part of phase 2 of the AP1 000 pre-certification review. Please direct questions on t...

2009
Denise L. Fleck

This paper presents inductive theoretical work inspired by the empirical study of the high-tech rivals General Electric and Westinghouse. Comparative historical analysis suggests that each firm’s responses to five organizational challenges have affected their chances of enjoying long-term success. In addition, the theoretical work advances two polar ideal types of organizational success and fai...

2008
S. Barnow Arthur S. Goldberger

This paper examines the possibilities of carrying out unbiased evaluations for compensatory education programs when group selection is not random and/or when pretests are unavailable. Four models are presented which demonstrate that bias can be avoided if particular selection procedures are used. The models are then considered for their usefulness in evaluating Head Start by using the data coll...

1989
Mark S. Fox

Manufacturing research is broadly concerned with tasks performed throughout the product manufacturing life cycle: Decision making at each stage requires creativity, the ability to deal with complexity and coordination with other activities in the cycle. As such, manufacturing represents a fertile domain in which to apply Artificial Intelligence. The potential of AI for solving manufacturing pro...

2005
A. Bharadwaj D. H. Archer E. S. Rubin

In this paper, we develop two computational models for the electrical performance of the tubular solid oxide fuel cell designed by Siemens Westinghouse Corporation. The first model makes simplifying assumptions for activation and concentration polarizations and obtains an analytical solution. In the second procedure, we allow the polarizations to vary with the current density and solve the equa...

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