the purpose of this research is to study the effects of board of director structure on financing constraints for the companies listed on tehran stock exchange (tse). for this purpose, indigenised kaplan and zingales (kz) index  has been used as a proxy for financing constraints. the population consists of 56 companies of tse spanning 2007-2013 and the multivariate logistic regression is used. t...

As circuit parametric variations aggravate in advanced technology, yield emerges as an important figure-of-merit in circuit design. Based on a 130nm technology, the yield-energy-delay tradeoffs in low-power circuit optimization are investigated. Using a log-normal statistical model, Monte-Carlo analyses are performed on typical circuit examples, including an inverter chain, NAND gate, and 4-bit...

Tri-level optimization problems are optimization problems with three nested hierarchical structures, where in most cases conflicting objectives are set at each level of hierarchy. Such problems are common in management, engineering designs and in decision making situations in general, and are known to be strongly NP-hard. Existing solution methods lack universality in solving these types of pro...

Many studies have analyzed the impact of climate change on crop productivity, but comparing the performance of water management systems has rarely been explored. Because water supply and crop demand in agro-systems may be affected by global climate change in shaping the spatial patterns of agricultural production, we should evaluate how and where irrigation practices are effective in mitigating...

Within a GB{like framework movement out of an object seems to be a valid concept for the description of natural languages whereas movement out of subjects and adjuncts is almost impossible. In a framework in which the notion object is determined conng-urationally, this condition on movement restricts the class of licensed structures. We will argue that this condition restricts as well the class...

Formation of isoprene nitrates (INs) is an important free radical chain termination step ending production of ozone and possibly affecting formation of secondary organic aerosol. Isoprene nitrates also represent a potentially large, unmeasured contribution to OH reactivity and are a major pathway for the removal of nitrogen oxides from the atmosphere. Current assessments indicate that formation...

Title of Thesis: Clustering with Propagated Constraints Eric Robert Eaton, Master of Science, 2005 Thesis directed by: Dr. Marie desJardins, Assistant Professor Department of Computer Science and Electrical Engineering Background knowledge in the form of constraints can dramatically improve the quality of generated clustering models. In constrained clustering, these constraints typically specif...

Circuit partitioning is a very extensively studied problem. Our proposed methodology easily extends to multiple constraints that are very dominant in the design of large scale VLSI Systems. In this paper we formulate the problem as a nonlinear program (NLP). The NLP is solved for the objective of minimum cutset size under the constraints of pins, area, and timing. We have tested the unified fra...

Algorithms for learning the conditional proba­ bilities of Bayesian networks with hidden vari­ ables typically operate within a high-dimensional search space and yield only locally optimal so­ lutions. One way of limiting the search space and avoiding local optima is to impose quali­ tative constraints that are based on background knowledge concerning the domain. We present a method for integra...