We used participatory design methodology to engage independently living older adults with depression and co-occurring physical illness in the design of assistive robots for their homes. Our aim was to work toward a design that can extend the amount of time they can live independently and increase their quality of life. Clinicians were also invited to contribute their ideas, as they are important advocates for using assistive technology in a clinical capacity. In this paper, we outline our strategies for engaging older adults as co-designers, noting what succeeded and what failed in our participatory design approach. We also discuss the viability of replication studies in participatory design and the need to engage other stakeholders besides older adults, such as clinicians, to provide practical robot applications.

Abstract This video demonstrates microsurgical resection of spinal cord hemangioblastoma. Hemangioblastomas are rare, benign, highly vascularized tumors classified as grade I according to World Health Organization classification systems. About 3% of all intramedullary tumors are hemangioblastomas.1,2 Spinal cord hemangioblastomas are either sporadic3,4 or manifestations of von Hippel-Lindau (VHL) disease in 20% to 45% of patients.5,6  A 30-year-old male presented with sudden onset urinary incontinence. Magnetic resonance imaging showed contrast enhancing intramedullary tumor with adjacent cyst in T11, and syringomyelia extending to C1. Surgical resection followed rules that apply to resection of arteriovascular malformations: coagulation of arterial feeders precedes the coagulation of the draining vein, which is preserved until the end of surgery.2,4,5,7,8  First, posterior midline myelotomy was performed and the tumor cyst was drained in order to develop a dissection plane. Following this, we continuously separated dorsal nerve roots from the tumor nodule using microsurgical technique. The key step in tumor resection is devascularization of the tumor, achievable in 2 ways.2,7,9-13 The circumferential detachment of the normal pia from the tumor pia is crucial in developing a plane of dissection. The coagulation and division of arterial feeders while preserving the drainage vein further devascularizes the tumor. Once the tumor mural nodule was detached from the spinal cord, the drainage vein was coagulated last and the tumor was removed. The patient fully recovered from his incontinence and was neurologically intact. Screening for VHL disease was negative.  Written consent was obtained directly from the patient.

According to estimates from 2010, the Canton of Sarajevo has about 465,000 inhabitants. City logistics centers are normally formed in all cities with more than 300,000 inhabitants. City logistics centers based on traffic and favorable locations on the periphery of cities or in the metropolitan area and connect the input and output streams, coordinate the flow of goods in the supply and the transportation of the urban area. This paper presents the possibility of building a city logistics center at the site of the city of Sarajevo, which we received on the basis of the method of assessment of credits offered three alternative sites. After choosing a location to build a city logistic center on the basis of mathematical methods, we calculated the effects of the electric vehicles in terms of driving energy consumption, economic viability and environmental protection between city logistics center Rajlovac-central zone of the city of Sarajevo. The paper will show the comparison of the efficiency of an electric car with respect to classical internal combustion vehicles and an analysis of the influence of classic diesel, petrol and electric motors on the environment for the planned relationship of the city of the logistics center Rajlovac - the central zone of the city of Sarajevo.

Corrosion reaction is a consequence of metal’s reaction with the environment. Reactions like this are causing huge construction maintenance costs. The most common type of corrosion is electrochemical corrosion, which includes stray current corrosion – it is electrochemical corrosion that occurs mostly on railway structures in urban areas. DC (direct current) transit system operators are using rails as current returning path from the vehicle to the substation. When proper drainage of the track isn’t assured, surrounding media in which rails are embedded becomes an electrolyte which leads to stray current leakage and development of corrosion. At the part where stray current is entering to the rail, rail in under cathodic protection. This is cathodic zone of rail. Corrosion occurs on parts where current is leaking from the rail, in anodic zone where deterioration of material under stray current corrosion effect can be notice. Different type of measures for reducing stray current leakage at the source are used among operators. At that way anodic reaction of metal (rails) with the electrolyte (media in which rails are embedded) can be stopped.