28 research outputs found
Human resource management in sports club "DCH STUDIJA" and it's improvement opportunities.
No full textBakalaura darba temats ir „Cilvēkresursu vadība sporta klubā "DCH Studija" un tās pilnveidošanas iespējas".
Darba mērķis ir izanalizēt esošo uzņēmuma cilvēkresursu vadīšanas sistēmu un dot priekšlikumus sistēmas pilnveidošanai un darba organizācijas uzlabošanai.
Bakalaura darba temats ir „Cilvēkresursu vadība sporta klubā "DCH Studija" un tās pilnveidošanas iespējas".
Darba mērķis ir izanalizēt esošo uzņēmuma cilvēkresursu vadīšanas sistēmu un dot priekšlikumus sistēmas pilnveidošanai un darba organizācijas uzlabošanai.
Darbs sastāv no trijām nodaļām. Pirmajā nodaļā tiek analizēta personālvadības teorija, ievērojot cilvēku emocinālo tipu noteikšanu. Otrajā nodaļā tiek raksturota uzņēmuma pastāvošā organizatoriskā struktūra, pētīta personāla vadīšana un noteikti uzņēmuma darbinieku emocionālie tipi. Trešajā nodaļā autors piedāvā priekšlikumus sporta kluba "DCH Studija" vadīšanas sistēmas pilnveidošanai, ievērojot pētījuma rezultātus.Bachelor thesis topic is "Human Resource Management in sports club "DCH Studija" and it's improvement opportunities."
The aim is to analyze the company's human resources management system and make proposals for improvement of the system and to improve the organization.
The thesis consists of three chapters. The first chapter analyzes the theory of human resource management in meeting people emotional type setting. The second chapter describes the undertakings' organizational structure, personnel management investigated and determined employees emotional types. In the third chapter the author offers suggestions for the club "DCH Studija" management improvement of the system under study.
The thesis is laid out on 59 pages, it has 4 illustrations, 5 tables, 2 attachments.
Keywords - emotional types , emotional needs , human resource management, sports club
Increased Pinch Force of Body Powered Prosthetic Hand with Pneumatic Force Servo
No full textIn the Netherlands, there are around 3750 patients suffering from an upper limb deficiency. Many different prosthetic hands have been designed to give these people the function of their hand back. Of the people who own such a prosthetic hand, about forty percent does not wear their hand and about half of the wearers does not use all of the functionalities the hand offers. The main reasons for this is that the hands have too much weight, are too complex to control and offer no feedback. The goal of this study is to create a low-weight prosthetic hand that is easy to control and provides feedback to the user. Therefore, this study presents a Force Demand Valve (FDV) that can be used with the Delft Cylinder Hand (DCH). This FDV increases the pinch force to operation force ratio by more than 200% with the use of pressurized CO2. This mechanism does not change the size or the weight of the hand itself, because it is attached near the elbow. Also, both the closing speed and the feedback to the user have not noticeably changed with the use of the FDV, compared to the DCH being used without FDV. The main disadvantage of the mechanism, is that the gas consumption is high. This consumption, however, can be decreased by making the FDV smaller, by increasing the activation force of the FDV and by providing a threshold in which the FDV will not exhaust gas when constant forces are applied for a longer period. Concluding from a user experiment, the mechanism designed in this study will make the DCH available for daily use to a wider range of people compared to the DCH without FDV.Biomedical Engineering | BioMechatronic
Molecular motion in pyridazinium/crown ether supramolecular cation salts of a nickel dithiolene complex
No full textSupramolecular cations formed by monoprotonated pyridazinium cations and cis-anti-cis-dicyclohexano[18]-crown-6 (DCH[18]-crown-6) or dibenzo[18]-crown-6 (DB[18]-crown-6) were introduced into [Ni(dmit)2]- salts (where dmit^[2-] = 2-thione-1,3-dithiole-4,5-dithiolate). X-ray crystal structure analysis of (pyridazinium+)(DCH[18]-crown-6)[Ni(dmit)2]- (1) revealed a chair-type conformation of the DCH[18]-crown-6 moiety. A V-shaped conformation of the DB[18]-crown-6 moiety was observed in (pyridazinium+)(DB[18]-crown-6)2[Ni(dmit)2]-(H2O)2 (2). Nitrogen atoms in the pyridazinium cations interacted with the oxygen atoms of the DCH[18]-crown-6 and DB[18]-crown-6 through N-H+～O hydrogen bonds, forming 1 : 1 and 1 : 2 supramolecular structures, respectively. Sufficient space for molecular motions of the pyridazinium cations, namely flip-flop and in-plane rotations, exists in salt 1. Disorder in nitrogen atoms was observed by X-ray analysis, indicating dynamic motion of the pyridazinium cation, namely flip-flop motion and in-plane motion. A potential energy calculation further supported the possibility of dynamic motion of cations in the crystal. By contrast, the flip-flop motion of the pyridazinium group in salt 2 is restricted by the two nearest-neighbouring DB[18]-crown-6 molecules. Weak antiferromagnetic intermolecular interactions between the [Ni(dmit)2]- anions in the two-dimensional layers of salt 1 were observed, resulting in alternating antiferromagnetic Heisenberg chain-type magnetic susceptibility. Quasi-one-dimensional intermolecular interactions between the [Ni(dmit)2]- anions were observed in salt 2, whose magnetic behaviour followed the Bonner-Fisher model
Oral feeding of minocycline attenuates glial activation and reductions of tau and drebrin in response to systemically injected cytokines
No full textpublished_or_final_versio
Impairment of decision making associated with disruption of phase-locking in the anterior cingulate cortex in viscerally hypersensitive rats
No full textCytokines: how important are they in mediating sickness?
No full textSickness refers to a set of coordinated physiological and behavioral changes in response to systemic inflammation. It is characterized by fever, malaise, social withdrawal, fatigue, and anorexia. While these responses collectively represent a protective mechanism against infection and injury, increasing lines of evidence indicate that over-exaggerated or persistent sickness can damage the brain, and could possibly raise the risk to developing delirium. Therefore, a clear understanding in sickness will be beneficial. It has long been believed that sickness results from increased systemic cytokines occurring during systemic inflammation. However, in recent years more and more conflicting data have suggested that development of sickness following peripheral immune challenge could be independent of cytokines. Hence, it is confusing as to whether cytokines really do act as primary mediators of sickness, or if they are secondary to alternative inducing factor(s). In this review, we will (1) introduce the relationships between systemic inflammation, cytokines, sickness, and delirium, and (2) attempt to interpret the recent controversies.postprin
Sickness: From the focus on cytokines, prostaglandins, and complement factors to the perspectives of neurons
No full textSystemic inflammation leads to a variety of physiological (e.g. fever) and behavioral (e.g. anorexia, immobility, social withdrawal, depressed mood, disturbed sleep) responses that are collectively known as sickness. While these phenomena have been studied for the past few decades, the neurobiological mechanisms by which sickness occurs remain unclear. In this review, we first revisit how the body senses and responds to infections and injuries by eliciting systemic inflammation. Next, we focus on how peripheral inflammatory molecules such as cytokines, prostaglandins, and activated complement factors communicate with the brain to trigger neuroinflammation and sickness. Since depression also involves inflammation, we further elaborate on the interrelationship between sickness and depression. Finally, we discuss how immune activation can modulate neurons in the brain, and suggest future perspectives to help unravel how changes in neuronal functions relate to sickness responses
Design of a Hybrid Hydraulic Actuation Mechanism for the Delft Cylinder Hand Prosthesis
No full textThe development of the Delft Cylinder Hand (DCH) demonstrated the design of a lightweight and functional hydraulic body-powered (BP) hand prostheses. The low friction losses of the hydraulics make it an attractive alternative to a classical mechanic transmission using rigid linkages and Bowden cables. There are benefits and trade-offs associated with BP and myoelectric prostheses. For example, improved sensory feedback is a benefit of BP prostheses. In this paper we set out to design a hybrid hydraulic actuation system for the body-powered DCH by extending the BP system with electro-hydraulic assistance, attempting to combine benefits of both BP and electrically actuated prostheses. We designed the hydraulic circuit, using a miniature external gear pump driven by a brushless DC (BLDC) motor in combination with solenoid valves to control the hydraulic flow. Furthermore, we designed a custom circuit board with a microcontroller, connected to pressure sensors and tactile sensors on the fingertips, to control the valves and the pump by a PD controller. Finally, we designed a 3D printed forearm structure, supporting the components, that connects to the hand through a wrist mechanism, allowing a pronation angle of 90°. We developed the hybrid prototype and verified its functioning by conducting several experiments. The prototype required an activation force of 53.5 N and 280 N mm of work done, at the input cylinder, to achieve a pinch force of 15 N, which is an improvement compared to commercial BP prostheses. Furthermore, the prototype was able to exert a pinch force of 22.5 N at an activation force of 100 N, at limited motor power, which is not as high as some commercial BP prostheses. Finally, the closing time of the prototype is 233 ms for a full close and 165 ms for the fingers to touch the thumb. The mass of the full prosthesis system is 901 g, including the battery pack, and could be reduced to an estimated 650 g. Future steps include optimization and miniaturization of hydraulic and electronic components, and mechanical structure of the prototype, reducing its mass to an acceptable level. Finally, extensive user testing is required to further validate the design direction.Mechanical Engineering | BioMechanical Desig
Integrating color and spatial features for content-based video retrieval
No full textIn this paper, we present a novel scheme for content-based video retrieval by exploring the spatio-temporal information A shot with significant content changes can be segmented into several subshots that are of coherent content and shot similarity measure for video retrieval can be computed from the similarity between corresponding subshots To characterize the temporal content variations in one shot, we developed two descriptors Dominant Color Histograms (DCH) and Spatial Structure Histograms (SSH) By fusing temporal information into color content, DCH for a "group of frames"(GoF) are trying to capture the dominant colors with long durations, which would be the colors of the focused objects or background SSH is a set of features extracted from color-blob maps to describe spatial information for one individual frame Experimental results on real-world sports video prove that our proposed approach achieve the best performance on the average recall (AR) and average normalized modified retrieval rank (ANMRR) for video shot retrievalsComputer Science, Software EngineeringComputer Science, Theory & MethodsEngineering, Electrical & ElectronicCPCI-S(ISTP)
