1,067 research outputs found
Extremum seeking control of battery powered vapor compression systems for vehicles
No full textThis thesis investigates the real-time energy optimization of battery powered vapor compression systems (VCS) for vehicles. Battery powered VCS are critical for maintaining passenger comfort in engine-off situations, and are especially important to long-haul truck drivers who sleep inside their vehicle overnight. However, one drawback of battery powered vehicle VCS is their short lifespan which may not provide cooling through the whole night while the vehicle engine is turned off. One reason for short system lifespan is suboptimal input selection; the combination of inputs to the VCS often yields a power consumption higher than necessary to generate the required vehicle cooling. This thesis proposes the use of extremum seeking control (ESC), a class of real-time model-free optimization algorithms, to determine the optimal combination of system inputs that minimizes the VCS power consumption while meeting given objectives. In order to determine algorithm efficacy, we implemented three different ESC algorithms (perturbation-ESC, least squares-ESC and recursive least squares-ESC) on a simulated and physical integrated VCS (the VCS in conjunction with the battery pack and vehicle cabin). Simulation and experimental results demonstrate significant increases in energy efficiency and battery life through the use of these algorithms, with least squares-ESC and recursive least squares-ESC being the most effective of the three.Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-09-27 without embargo termsThe student, Sunny Sharma, accepted the attached license on 2018-05-31 at 15:33.The student, Sunny Sharma, submitted this Thesis for approval on 2018-05-31 at 15:57.This Thesis was approved for publication on 2018-06-05 at 10:37.DSpace SAF Submission Ingestion Package generated from Vireo submission #12601 on 2018-09-27 at 10:44:20Made available in DSpace on 2018-09-27T16:17:21Z (GMT). No. of bitstreams: 3
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Previous issue date: 2018-06-0
A Remote Area Power Supply (RAPS) Training Facility utilising SMA Sunny Island Inverter technology and National Instruments measurement package
No full textRAPS systems can sometimes be a cheaper alternative for supplying power than connection to a distant utility. Most assuredly it is a cleaner method of producing electricity than coal or gas constituents, provided the diesel generator is used minimally. A modern RAPS system will generally have several sources of generation, typically they might be; solar, wind and a diesel/petrol generator coupled with a battery to store excess power. The RAPS 2 system at Murdoch University was selected for an overhaul early in 2010. The system was redesigned to include new inverter technology from SMA. The new system relies on 3 separate inverters to convert the sources directly into grid quality electricity, as opposed to some traditional RAPS systems that would have most of its elements feed a DC bus that connected to a single inverter. This novel way of setting up a mini grid finds its niche in situations when the terrain or meteorological conditions make it impractical to have generation equipment all localised and a DC bus would have higher associated cable losses.
For such a system to be of educational benefit to tertiary students, the variables within the system must be able to be monitored. To this end an advanced measurement system has been designed and procured so that every measurable point in the upgraded system is available for display.
The measurement system was designed using National Instruments compact DAQ (data acquisition) hardware, one of the first of its type to be introduced to the university. The compact DAQ unit has been coupled with isolation equipment supplied by Dataforth, which already has an existing prevalence throughout the engineering department. The subsequent measurement program monitors 31 system variables at a high sampling rate to provide real time information on the state of the system. The measurement program also monitors relevant meteorological aspects such as the solar irradiance and local wind speed.
This report documents and details the steps taken to set up a new and novel RAPS system. Discussed are the approaches taken throughout the semester to project manage and facilitate progress. A detailed description is also given of the measurement and protection system that has been designed to allow students and the general public to get a good grasp on the performance of the system
Q&A on Sunny Singh’s short story A Cup Full of Jasmine Oil
No full textWith its rich semantic texture and evocative imagery Sunny Singh’s short story A Cup Full of Jasmine Oil invites various readings. The story tells how a young girl is both attracted and confused when her grandmother’s neighbor, who lives in a lesbian relationship, massages her skull and oils her curly hair. When the grandmother at one point forbids the oiling sessions, the girl suddenly becomes aware of hidden meanings and intuitions associated with this practice. The essay juxtaposes a reading of the story from a more conventional western perspective with an interpretation from the point of the Indian system of aesthetics based on rasa. From this double perspective, it discusses various stylistic and thematic aspects of the story. Diverging interpretations are presented of the role of the characters, the functionality of their characterization, and the use of description and suggestion to evoke the semantic framework of the story. The juxtaposition of two readings was prompted by a discussion with the author during a conference panel on rebellion in modern Indian literature and film. To prevent the impression of imposing a “scholarly” reading on a more “intuitive” reading, the essay continues the dialogue with the author and invites her to react to the reading and discuss the notion of an “Indian” aesthetic model, its relevance for her writing, and current critical approaches to modern Indian fiction. In her response, Sunny Singh explains how the theme of the story was prompted by her perception of the sharing of knowledge of sexuality and intimacy in a tightly-knit Indian social context. The discussion with the author extends beyond the specific story, and she presents her views on how her scholarly knowledge of modern Indian culture stimulates her in her creative work. Thereby, it aptly frames the exploration of a reading of A Cup Full of Jasmine Oil from the perspective of Indian literary aesthetics
Sunny: Arizona State University's Chatbot for Students
No full textabstract: Next year, Arizona State University is launching a chatbot that will place their knowledge and services right into the palms of their students’ hands. Currently named Sunny, this virtual assistant will be able to answer questions regarding all aspects of college life, from orientation to housing, financial aid, schedules, intramurals, and more. Over the last semester, I have met with members of the Sunny development team to discuss their design and implementation plans. With their information plus a bit of outside research, I was able to combine several frameworks and technologies to build a prototype for Sunny. Prototypes allow developers to evaluate their designs early on, giving them ample time to make any necessary adjustments. I am confident that the Sunny development team will be able to learn from my basic implementation, from its triumphs and failures, to create the best possible chatbot for the students attending Arizona State University
Team ACK at SemEval-2025 Task 2: Beyond Word-for-Word Machine Translation for English-Korean Pairs
No full textPayroll accounting at "Sunny terrace" Ltd
No full textDiplomdarba tēma ir “Darba samaksas aprēķināšanas un uzskaites kārtība SIA “Sunny terrace””.
Darba mērķis ir izpētīt darba samaksas teorētisko pusi un tās organizāciju SIA “Sunny terrace”, lai izstrādātu ieteikumus darba samaksas sistēmas pilnveidošanai uzņēmumā.
Diplomdarbs sastāv no trīs nodaļām, no kurām pirmajā tiek sniegts tēmas teorētiskās puses apskats, otrajā – uzņēmuma un tā organizatoriskās struktūras apraksts, bet trešajā nodaļā aprakstīta darba samaksas organizācija uzņēmumā.
Darba nobeigumā iekļauti autores secinājumi un priekšlikumi.
Diplomdarbs izstrādāts, pamatojoties uz LR likumdošanu, LR MK noteikumiem, ekonomisko literatūru un autores novērojumiem.
Darba apjoms ir 66 lapas, tajā iekļauti 3 attēli, 14 tabulas. Darbam ir 5 pielikumi. Izstrādē izmantoti 36 literatūras avoti.
Atslēgvārdi: darba samaksa, uzskaite, alga.The main theme of the diploma thesis is Payroll accounting at Sunny terrace Ltd.
The aim of diploma paper is to explore theoretical aspects of payroll accounting and its organization at Sunny terrace Ltd to explore recommendations for improving the system of salaries, wages in the company.
The diploma paper consists of three chapters, in the first chapter there’s given themes theoretical overview, the second one – description of the company and its organizational structure, in the third chapter author describes payroll accounting at the company.
At the summary of the paper there are conclusions and recommendations included.
Diploma thesis is based on the Republic of Latvia law, the Cabinet regulations, the economic literature and the author's observations.
The amount of the paper is 66 pages; there are 3 figures and 14 tables. The diploma thesis has 5 attachments. In the diploma paper development author used 36 literature sources.
Key words: payroll, records, salary, wages
Love Grows
No full textAuthor: Sunny Harris | Illustrator: Sarah Crutchfield | Designer: Areana Rodriguez | Editor: Annete LoeraA caterpillar going through changes asks her mother a series of questions about life, love, and growing up. Her mother answers with bedtime stories like anecdotes that deal with race, gender, and sexuality both as personal identity and within the scope of relationships. The anecdotal responses feature a cast of flora and fauna, including cats, owls, and flowers, depicted through watercolor-like digital illustrations
Promoting Wellbeing with Sunny, a Chatbot that Facilitates Positive Messages within Social Groups
No full text© 2020 Owner/Author. A Facebook Messenger chatbot, Sunny, was designed and deployed to promote positive social connections and enhance psychological wellbeing. A 10-day study was conducted with three pre-existing social groups of four members each in control (n=12) and experimental groups (n=12). Both groups completed initial assessments and daily reports, and the experimental groups interacted with Sunny. Exit interviews indicated three key themes: 1) Sunny prompted self-reflection, boosting participants' senses of self-worth and the depth of their relationships, 2) using Sunny encouraged participants to send heartfelt messages they would not have shared otherwise, 3) participants enjoyed accessing positive messages "on-demand". Experimental groups showed an average increase in psychological wellbeing of 1.73 (std = 6.08), compared to 0.5 (std = 5.94) in control. Our results suggest that an AI-based chatbot like Sunny could provide preventative care, promoting strong social connections and psychological wellbeing
Tuning the ribosome: The influence of rRNA modification on eukaryotic ribosome biogenesis and function
No full textSURFACE MODIFICATION OF CORNEAL CONTACT-LENS WITH PHOSPHORYL CHOLINE BY GLOW-DISCHARGE
No full textPolymers like poly(methylmethacrylate) (PMMA) and poly(2-hydroxyethylmethacrylate) (PHEMA) are widely used in the development of hard and soft contact lenses. Cell adhesion and deposition of chemicals such as calcium, lipoproteins and mucin on the lens surface cause visual acuity which is the main problem in extended uses of contact occular lenses. In order to minimise the cell adhesion and other type of depositions, a method of surface modification of lens involving the use of phosphoryl choline, a phospholipid and the glow discharge technique has been described. The power variation of the lenses after modification has been checked using Topcon lensometer. The possible power changes of the modified samples due to the exposure to the normal light in the laboratory, darkness, ultraviolet (U.V.) light or saline have been investigated by taking the visible and ultra violet spectra using Beckman spectrophotometer. Surface energy variations after modifications of the samples have been checked by sessile drop water contact angle measurements. Glow discharge treatment increases the hydrophilicity of the samples. It seems, the modifications do not affect the power of hard contact lens significantly. It is also observed that the exposure of samples to the normal light in the laboratory, darkness, U.V. light or saline make no significant change in the visible and ultraviolet spectra of the samples before and after modification
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