According to conventional wisdom, rapidly growing stocks of scrap tires on the U.S.–Mexico border pose a variety of health and environmental risks. This article assesses these risks in Paso del Norte, the border’s second-largest metropolis comprised principally of Ciudad Juárez, Chihuahua, and El Paso, Texas. We find that air pollution from tire pile fires poses the greatest threat. Scrap tires...

We examine the strategic interplay between a buyer’s design decision and the ensuing competition between suppliers in a three-tier closed-loop supply chain setting with significant recycling considerations. The nature of the engineering design decision in our research entails choice of integral versus modular design that has direct implications for the input raw material waste and ensuing compe...

Most research in economic manufacturing/order quantity management assumes that all products are of perfect quality and are produced at a constant production rate. One result of this assumption is that the number of units produced in a given period is constant, which is not the case in real life. Most production systems produce items which are of perfect quality along with some that are of imper...

Session 1948-49 I.T is customary on the occasion of his inauguration for your President to give you an address, and a wide variety of subjects has been chosen in previous years. Sometimes the speaker discussed some facets of his professional work, and at other times the address reflected his interest in matters not strictly medical, as in last year's memorable dissertation. It was chance which ...

The success of the electronics industry over the last decade in developing the mass consumer market for computers, cellphones and other personal electronic equipment has been phenomenal. Society must now finds ways of safely and economically recovering the materials that are embedded in these products. This will require significant investment by governments, industry and individuals, in technol...

In this study, the reduction of Cr(VI) by use of scrap iron, a cheap and locally available industrial waste, was investigated in continuous system. The greater scrap iron efficiency observed for the first two sections of the column filling indicate that most of the reduction process was carried out in the bottom half of the column filling. This was ascribed to a constant decrease of Cr(VI) conc...

Uncertainty theory has got quite attention after it was pioneered by Baoding Liu in 2007. Uncertainty is the newest area among the concepts to express imprecise quantities which can be expressed by the ambiguity of human language. Such an unpredictable value can be neither accurately described by probability theory nor fuzzy logic. In inventory models, costs are very prominent part of the syste...

CCC-r chart extended approach of CCC charts, is a technique applied when nonconforming items are rarely observed. However, it is usually assumed that the inspection process is perfect in the implementation control charts imperfect inspections may have a significant impact on the performance of the control chart and setting the control limits. This paper first investigates the ...

Usually it is assumed that all items in a lot are of good quality, but in reality this assumption may not always be pertinent. Thus, the inspection of lots becomes essential in almost all organizations. Moreover, its role becomes more vital when the items are deteriorating in nature. Owing to this fact, this paper investigates the impact of initial inspection on retailer’s pricing and ordering ...