This thesis deals with the strength analysis of girders handling 186 t. The main objective of this thesis is to perform strength control using the Finite Element Method. NX I-DEAS software was used to perform all the necessary calculations. Possible design changes for undersized components are also presented.

The subject of this thesis is a design of an aluminium scrap handling device. This device works in a roofed-over hall and it is stationary. Introduction to this thesis brings the usual machines used for handling of metal waste as alternatives to this device, and the reasons why these do not fulfil the customer’s demands. The work contains kinematics lay-out and force analysis. The shape and dimensions of the design derive from these chapters. The following part deals with the description of the major parts including the hydraulic system which provides all the working movements of the device. The conclusion comprises of the retroactive check of the device’s tipping load, calculation of the rollover resistance, stress analysis of the boom and the stick. The work includes the general assembly drawing and subassembly drawings of the boom and the stick.

The main objective of this work is to design and calculation of handling means for transporting the Bell helicopter between landing area and the storage place. The first part is a literature search with a general overview of producers who are preoccupied with producing the same or similar equipment. Below is an analysis of the applicable mechanisms for handling the helicopter in terms of structure and a summary of some manufacturers. In the second part the design, calculations, technical and design documentation.

Background: Healthcare workers are ranked among one of the top occupations for musculoskeletal disorder (MSD) injuries that affect the muscles, the bones, the nervous system and due to repetitive motion tasks (Centers for Disease Control and Prevention, 2017). Numerous high-risk patient handling tasks such as lifting, transferring, ambulating and repositioning of patients cause injuries that can be prevented when evidence-based solutions are used for safe patient handling and mobility (SPHM) tasks. Purpose: The purpose of this quality improvement project was to evaluate the knowledge and attitudes of orthopedic nurses regarding the use of SPHM algorithms as the standard of care when transferring patients. Theoretical Framework. Lewin’s Theory of Change Methods. A quasi-experimental pretest-post-test design was utilized in this evidenced-based practice project. Results. Descriptive statistics that evaluated pre and post questionnaires of the orthopedic nurses noted nurses displayed behavioral and attitudinal intent to use the SPHM algorithms as the standard of care to improve patient outcomes by decreasing falls. Although the behavioral beliefs and attitudes reflected acknowledgement of SPHM skills and knowledge, nursing did not improve in their documentation of SPH fall risk as two separate tools were required on each patient. Conclusions: SPHM evidenced-based standards do guide staff to critically examine how to safely transfer and mobilize a patient. Patient fall rates did decrease during educational sessions, prompting the need for on-going education of all staff on the unit that transfers patients. The findings from this quality project may encourage future practice approaches to use of the safe patient handling (SPH) fall risk assessment tool for all patients to prevent patient falls.

Master of Science

The models used by model predictive controllers (MPCs) to predict future outcomes are usually unconstrained forms like impulse or step responses and discrete state space models. Certain MPC algorithms allow constraints to be imposed on the inputs or outputs of a system; but they may be infeasible as they are not checked for consistency via the process model. Consistent constraint handling methods - which account for their interdependence and disambiguate the language used to specify constraints – would therefore be an attractive aid when using any MPC package. A rigorous and systematic approach to constraint management has been developed, building on the work of Vinson (2000), Lima (2007) and Georgakis et al. (2003) in interpreting constraint interactions. The method supports linear steady-state system models, and provides routines to obtain the following information: <ul> <li> effects of constraint changes on the corresponding input and output constraints, </li><li> feasibility checks for constraints, </li><li> specification of constraint-set size and</li><li> optimal fitting of constraints within the desirable input and output space.</li></ul> Mathematical rigour and unambiguous language for identifying constraint types were key design criteria. The outputs of the program provide guidance when handling constraints, as opposed to rules of thumb and experience, and promote understanding of the system and its constraints. The metrics presented are not specific to any commercial MPC and can be implemented in the user interfaces of such MPCs. The method was applied to laboratory-scale test rigs to illustrate the information obtained. / Dissertation (MEng)--University of Pretoria, 2011. / Chemical Engineering / unrestricted

BACKGROUND: Healthcare workers are among the most injured workers in the United States. This is due to the high rate of patient handling. The low back is the most injured in this population. This study observed biomechanical factors and how these factors affect low back and ground reaction forces. This study further investigated pain and its relationship to low back force, multifidus cross-sectional area, and multifidus activation in healthcare workers. METHODS: The 45 participants included 10 healthy subjects in the preliminary study and 35 active healthcare workers in the main study. Subjects filled out the VAS to determine current pain level. Ultrasound images of the multifidus muscles were taken. The participants were fitted with reflective markers and surface EMG sensors. A series of patient transfers at various bed heights using three different transfer devices was undertaken. The transfer devices included a Cotton sheet, a Skil-Care™ Transfer Sling, and an AirPal® device. RESULTS: There was a downward trend in resultant low back force when comparing lower bed heights to higher. Therefore, the highest bed position was determined to be optimal. There were significant differences in low back force between self-chosen and optimal bed heights among healthcare workers. There was no significant difference between peak low back or ground reaction forces between pain and nonpain groups. There was a significant difference in multifidus cross-sectional area between these groups at S1, a trend toward significance at L5, and no difference at L4. There was a trend toward significance when comparing multifidus activation between these groups as recorded by surface EMG. CONCLUSIONS: Healthcare workers should choose higher bed heights and appropriate equipment to reduce low back force and those who have smaller multifidus have more pain.

This thesis report will show the process and result of the bachelor thesis “Next generation of handles for stackers and powered pallet trucks,” done in collaboration with Toyota Material Handling Manufacturing Sweden.  This project aims to develop ergonomic and intuitive solutions where the focus lies on the interaction between the driver and the truck, how the different functions are controlled, and the needs of the future truck driver. The project follows the principle of the design process with an analysis phase, a creative phase, and a presentation phase. In the analysis phase, the product’s positive and negative parts have been analyzed through user testing, interviews, and driving tests; these tests have laid the foundation for the final concept. During the creative phase, brainstorming and discussion rounds were executed with supervisors and colleagues at TMHMS, resulting in a concept proposal. The concept was then brought to life with a clay model, a first 3D print, and finally, a finished 3D-printed model. The new concept forms new ways to interact with the truck, making the truck driver’s day easier and exploring new ways to use the handle.

Under de drygt 20 år som passerat sedan sexköpslagen infördes i Sverige har både samhället och sexualbrottslagstiftningen genomgått stora förändringar. Det gamla begreppet sexuellt umgänge har ersatts med det vidare begreppet sexuell handling och internet möjliggör idag köp av s.k. livepornografi där köpare betalar säljare för att utföra specifika sexuella handlingar på sig själva som köpare kan följa i realtid. Gränsen mellan vad som är pornografi och vad som faktiskt kan utgöra ett sexköp håller på att suddas ut. Samtidigt som de senaste årens rättsutveckling har förändrat synen på begreppet sexuell handling på det viset att sådana handlingar numera kan genomföras över nätet tycks den rådande uppfattningen vara att sexköp förutsätter fysisk kontakt. Syftet med uppsatsen har varit att utreda om sexköpsbrottet kan begås på nätet. Utredningen har bestått dels av att undersöka hur rekvisitet sexuell förbindelse i sexköpsparagrafen ska förstås och dels att undersöka om sexualbrott överhuvudtaget kan begås mot vuxna människor på nätet. I syfte att utröna sexköpsparagrafens rätta mening, i förenlighet med legalitetsprincipen, har utredningen utgått från lagstiftning, förarbeten, praxis och doktrin. Resultatet som presenteras i uppsatsen är att rekvisitet sexuell förbindelse avser samlag eller sexuell handling enligt nuvarande begreppsbildning och att sexualbrott mot vuxna kan begås över nätet. Sexköpsbrottet bör således vara tillämpligt online.

The aim for this thesis is to design a software library responsible for preventing, detecting, handling and logging faults caused by radiation in a representable flight computer system based on the Cobham Gaisler GR740 quad-core LEON4FT processor chip. The LEON processor family is commonly used in space applications and it is based on the open SPARC instruction set and has been extended with fault tolerant features to cope with both on-chip radiation effects as well as upsets in external memory. The new GR740 device introduces a new computer architecture with multiple buses as compared to previous chips, Level-2 cache and a memory scrubber accelerating fault mitigation in external SDRAM memories. As the processor system design keeps getting more complex it also requires software to handle more hardware and new events, including central handling and logging routines of faults. The report describes the analysis performed to identify sources of faults and proposed suitable mitigation techniques, the established software requirements and how they are translated into a software architecture, then implemented and finally demonstrated on hardware. Along with this, it is shown how the developed demonstrator application software library can be integrated into the RTEMS real-time operating system commonly used in European space missions. The results are based on the demonstrator execution, and the results show that the software is functionally working and validates that the performance of the scrubber matches the derived scrubbing timings. After the project is completed, the software library design will be evaluated for use in Cobham Gaisler’s payload computer platform for the GOMX-5 mission. Radiation upsets will be emulated by injecting faults while running the developed API on demonstrator applications. Furthermore, implementation of software into NASA cFS/cFE will be analysed.