Multiprocessor task scheduling in multistage hyrid flowshops: a genetic algorithm approach

This paper considers multiprocessor task scheduling in a multistage hybrid flow-shop environment. The objective is to minimize the make-span, that is, the completion time of all the tasks in the last stage. This problem is of practical interest in the textile and process industries. A genetic algorithm (GA) is developed to solve the problem. The GA is tested against a lower bound from the literature as well as against heuristic rules on a test bed comprising 400 problems with up to 100 jobs, 10 stages, and with up to five processors on each stage. For small problems, solutions found by the GA are compared to optimal solutions, which are obtained by total enumeration. For larger problems, optimum solutions are estimated by a statistical prediction technique. Computational results show that the GA is both effective and efficient for the current problem. Test problems are provided in a web site at www.benchmark.ibu.edu.tr/mpt-h; fsp

Cerebellar infarction in childhood: Delayed-onset complication of mild head trauma

Objective Cerebellar ischemic infarction is a rare complication of minor head trauma. Vertebral artery dissection, vasospasm or systemic hypo perfusion can cause infarct. However, underlying causes of the ischemic infarct cannot be explained in nearly half of cases. The accurate diagnosis is essential to ensure appropriate treatment. Here we report a five yr old boy patient of cerebellar infraction after minor head trauma, admitted to emergency serves of Bulent Ecevit University, Turkey in 2013. We aimed to remind minor head trauma that causes cerebellar infarction during childhood, and to review the important points of the diagnosis, which should be keep in mind. © 2016, Iranian Child Neurology Society. All rights reserved

The 2017-2018 Seasons at Çadir Höyük on the North Central Plateau

The Çadır Höyük mound is located in Yozgat Province, approximately 16 km from the city of Sorgun. Work commenced at the site in 1993 with an intensive surface survey, followed by excavation beginning in 1994. The deep sounding (excavated from 1994-2001) demonstrated that occupation stretches back to at least 5200 cal. BC; excavations on the mound summit indicate that occupation continued until a final abandonment perhaps in the 13th century CE. No gap in occupation of the mound over some six thousand years has been detected. The findings presented here derived from our work in three main periods represented at the site: the Late Chalcolithic exposure (ca. 3800-3500 BCE) located on the lower southern slope, the second and first millennium BCE, excavated in several areas of the site (the western slope work is presented here), and the Byzantine occupation, ca. 6th-13th centuries BCE on the mound summit, including mention of possible Roman architecture discovered in the 2018 season. The 2017 season provided some major discoveries, including three important child burials in the Late Chalcolithic area, a new gate and entryway into the Byzantine summit area, and a possible chapel. The 2018 season was devoted to further exploring these and other discoveries made in previous seasons in an attempt to solve major questions in preparation for a planned study season in 2019. By the close of the 2018 season we had achieved many of our goals; our work and interpretations are presented herein

The 2017-2018 Seasons at Çadır Höyük on the North Central Plateau

The Çadır Höyük mound is located in Yozgat Province, approximately 16 km from the city of Sorgun. Work commenced at the site in 1993 with an intensive surface survey, followed by excavation beginning in 1994. The deep sounding (excavated from 1994-2001) demonstrated that occupation stretches back to at least 5200 cal. BC; excavations on the mound summit indicate that occupation continued until a final abandonment perhaps in the 13th century CE. No gap in occupation of the mound over some six thousand years has been detected. The findings presented here derived from our work in three main periods represented at the site: the Late Chalcolithic exposure (ca. 3800-3500 BCE) located on the lower southern slope, the second and first millennium BCE, excavated in several areas of the site (the western slope work is presented here), and the Byzantine occupation, ca. 6th-13th centuries BCE on the mound summit, including mention of possible Roman architecture discovered in the 2018 season. The 2017 season provided some major discoveries, including three important child burials in the Late Chalcolithic area, a new gate and entryway into the Byzantine summit area, and a possible chapel. The 2018 season was devoted to further exploring these and other discoveries made in previous seasons in an attempt to solve major questions in preparation for a planned study season in 2019. By the close of the 2018 season we had achieved many of our goals; our work and interpretations are presented herein