Master of Agribusiness / Department of Agricultural Economics / Brian C. Briggeman / Grain Elevators have towered the plains of Southwest Kansas for over the last half of a century. Many of these large white concrete structures were built during the 1950s using a slip form concrete design. While new grain storage has been built over time, many of the original slip form structures remain a large part of the farm cooperatives storage capacity. Grain production has continued to increase and put greater demand on storage facilities and handling capabilities. Thus, there is a need for cooperatives to meet the future demands of farmers by replacing or updating grain storage assets. The objective of this project is to provide a comparative analysis of grain storage options that a cooperative, primarily the Garden City Co-op, Inc. (GCC), could utilize in making a decision to update or replace grain storage assets. The project examines three different options for grain storage including concrete, steel, and bunker storage. The project will also examine extending the life of an original slip form elevator by installing a gunite bin liner. To determine which option that provides the most economic benefit to GCC and its members, Net Present Value and the Internal Rate of Return are estimated for each grain storage option. GCC historical grain handling margins and grain storage costs were derived from historical averages and bids from projects GCC has undertaken in the past five years, respectively. The model assumes receipts as a percentage of storage to accurately represent bushels handled by a facility. Grain storage is highly variable in initial cost and the operational needs will change in every circumstance. The results indicate that a large volume of grain is needed before economic profits will be realized.

I try to create a discussion about barrier-free of Faculty of Fine arts VUT Brno. Then i made a symbolic elevator and collection to rebuild a buildings of FaVU. My target is change a attitude of school leaders, employer and students of FaVU, to make a barrier-free school.

This degree project is the final part of the bachelor in mechanical engineering at Linnaeus University in Växjö. The project has been accomplished at ALT Hiss AB in Alvesta. The company manufactures hydraulic elevators, less traction elevators and escalators. The purpose of this thesis has been to design a tool that plumbs the elevator shaft. The thesis has been completed with literature studies, interviews and data collections. The final concept sketch and idea drawing is presenting the result.

Thesis (M.B.A.)--University of Hong Kong, 1992.

The aim of this diploma thesis is making a degradation analysis of guide track for car body elevator and creating a new design of storage drive according to acquired knowledge. In the first part of this thesis is written research dealing with the issue of lifting equipment. Afrer this part follows load calculation with consideration of dynamic effects. Based of this calculation are created four different variants of the new travel lift with the use of various types of rollers (metal and plastic) moving through different types of rails (elevator and square profil). For most appropriate selected variant are created two differend designs of the new travel lift. Design variants are described in detail and check by finite element method, giving rise to the final selection of variants. For the selected variant is produced complete drawings.

In this thesis, we investigated if reinforcement learning could be applied on elevator systems to improve performance. The performance was evaluated by the average squared waiting time for the passengers, and the buildings considered were apartment buildings. The problem of scheduling elevator cars is an NP-hard problem, and no optimal solution is known. Therefore, an approach where the system learns a strategy instead of using a heuristic, should be the easiest way to get near an optimal solution. A learning system was constructed, where the system was trained to use the best scheduling algorithm out of five in a given situation, based on the prevailing traffic. The purpose of this approach was to reduce the training time that was required in order to get good performance and to lower the complexity of the system. A simulator was then developed, in which the different algorithms were implemented and tested in four different scenarios, where the size of the building and the number of elevator cars varied. The results generated by the simulator showed that reinforcement learning is a great strategy to use in buildings with 16 floors and three or four elevator cars. However, reinforcement learning did not increase the performance in buildings with 10 floors and two to three elevator cars. A possible reason for this is that the variation in performance between the different scheduling algorithms was too small in these scenarios. / I denna rapport har vi undersökt huruvida reinforcement learning är användbart för att öka prestandan för hissystem i lägenhetshus. Prestandan bedömdes efter de genomsnittliga kvadrerade väntetiderna för resenärerna. Schemaläggningsproblemet för hissar är NP-svårt och ingen optimal lösning är känd. Att lösa problemet med hjälp av ett system som lär sig hur det ska agera, bör således vara en enklare strategi för att komma nära den optimala lösningen än att använda sig av en heuristik. Ett självlärande system konstruerades, där systemet tränades att använda den bäst lämpade schemaläggningsalgoritmen med avseende på rådande trafikförhållanden. Det fanns totalt fem olika algoritmer att välja bland. Anledningen till att detta gjordes i stället för att systemet skulle lära sig en komplett strategi, var för att sänka träningstiden som krävdes för att åstadkomma bra resultat och för att minska komplexiteten. En simulator utvecklades sedan, där de olika algoritmerna implementerades och testades på fyra olika scenarion, där storleken på byggnaden och antalet hissar varierade. Resultaten som genererades visade att reinforcement learning fungerar utmärkt på byggnader med 16 våningar och tre eller fyra hissar. På byggnader med tio våningar och två till tre hissar är det dock inte lika användbart och där bör i stället enklare algoritmer användas. En möjlig förklaring till detta är att prestandaskillnaderna mellan algoritmerna var för små under dessa scenarion.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

The elevator is a common vertical transportation in our life. The elevator door system includes a door driven system, a door coupling, a door safety, and two door locks. The purpose of this work is to develop a systematic methodology for the design of the elevator door system. First, basic characteristics of the elevator door system are deduced, and all possible variants of function structures are synthesized by functional analysis method. Next, a system of kinematic notation is used to generate the principle solutions of each function in the function structure. Finally, all design concept variant can be created by using morphological chart method. Several design concept can be created for new elevator door system.

Thesis (M.B.A.)--University of Hong Kong, 1983.

No description available.