Basic equations of motion and ablation of a single non-fragmenting body through the atmosphere were solved with ablation and shape-density coefficients as general functions of time. This solution was applied to 22 photographically recorded meteoroids with very precise data available, such meteoroids which did not yield solutions by using the gross-fragmentation model. Extremely high values of t...

In this paper, we describe the design and development of an interactive virtual environment whose objective is to help undergraduate students learn and review the concept and practices of differential leveling. The virtual environment includes realistic terrains and leveling instruments that look, operate, and produce results comparable to the physical ones. It will be integrated in surveying c...

The following paper will describe a methodology for automatically detecting and diagnosing rolling element bearing wear. The techniques involved have been proven in over 15 years of use in a huge variety of environments, machine types and applications. The techniques involved in diagnosing bearing wear will be described in detail and supported by a set of example graphs and an annotated diagnos...

Codeposition of two molecular species [copper phtalocyanine (CuPc, donor) and perfluoropentacene (PFP, acceptor)] on noble metal (111) surfaces leads to the self-assembly of an ordered mixed layer with a maximized donor-acceptor contact area. The main driving force behind this arrangement is assumed to be the intermolecular C-H ⋯ F hydrogen-bond interactions. Such interactions would be maximize...

Despite the numerous benefits of formal mentorship for all faculty, it remains underutilized within academy. Specifically, this lack critical support leaves historically marginalized groups, particularly women, underrepresented minorities, as well part-time, intermittent, adjunct, or non-tenure track to struggle with navigating challenging climate higher education. To counter these inherent pow...

This paper explains an implementation model for a new method for Production Leveling designed for batch production system. The main structure of this model is grounded on three constructs: traditional framework for Operations Planning, Lean Manufacturing concepts for Production Leveling and case study guidelines. By combining the first and second construct, a framework for Production Leveling h...

In this paper a new method based on fuzzy theory is developed to solve the Project Resource Leveling Problem in fuzzy environment. Resource Leveling Problem attempts to minimize the resource usage fluctuations in project plan. Assuming that the duration of activities and resource requirements are fuzzy, in this method we compute several project characteristics such as earliest times, latest tim...

The project scheduling and resource allocation problems have been studied using different optimization methods. The resource leveling problem was proposed to reduce the resource fluctuation and was always studied independently resource constraint problem. For example, resource-constrained project scheduling problem (RCPSP) was proposed to optimize scheduling under resource constraints. This res...

to determinine the timeliness cost of machine operation, farm-level data were collected from random sample of 227 sugar beet farms located in the three major districts of fars province of iran: eghlid, marvdasht and fasa in 2006.  the results showed that timeliness cost of tillage practices (plough and land leveling), applying fertilizers before planting and timeliness in seed planting per ever...