Sunday, January 26, 2020

Impact of Just in Time in Manufacturing

Impact of Just in Time in Manufacturing CHAPTER I INTRODUCTION Introduction to the Problem Statement of the Problem: It had been proved from time and again the positive impact of Just in Time in manufacturing. No models or methodologies have been developed to relate how predictive maintenance can have a significant effect on the performance of JIT in manufacturing and its supply chains. In early 1950s Toyota devised their manufacturing system called Toyota production system which streamlines the entire process of manufacturing in an organized way through continuous information sharing between supplier and customer to achieve just- in- time production. Just-in-time is one of the major pillars of Toyota production system. Implementation of lean principles gave way for various strategic advantages in manufacturing. (Lathin, 2001) stated that using lean principles, a traditional mass producer could expect a reduction of 90% in inventory, cost in quality, lead time and 50% increase in labor productivity. (Nystuen, 2002) stated that one could see a reduction of 90% in travel time, 82% in inventory and 11% in product lead time. After the success of Toyota production system,  Ã‚   although this production system revolutionized the entire process of manufacturing in Japan, it did not reflect the west. This is due to many reasons such as traditionally minded management (Gup ta and Jain, 2013), lack of machine capability, high inventory, fluctuating markets (Golhar, Stamm, and Smith, 1990), high product variety (Cusumano, 1994) and lack of communication between processes. One of the biggest key suspects understands machine capability. This can be achieved by filling the gap between machine capability information and production planning. To achieve this system, there are 2 key elements; Real- time machine data and data processing. P.ODonovan, K. Leahy, K. Bruton and D.T.J. OSullivan (2015) presented a concept called smart manufacturing where manufacturing data can be used create positive impact on the manufacturing operations The first industrial revolution began in early 1800s through mechanical production using steam and water. Since then, there has been two other industrial revolutions through assembly line production for mass production, increase quality, reduce cost and manufacturing time; and using technology and IT systems. Currently the manufacturing industry is in the midst of data driven revolution transforming traditional manufacturing facilities into smart manufacturing facilities (Peter ODonovan, Kevin Leahy, Ken Bruton and Dominic T. J. OSullivan, 2015). Many industry Pundits today believe; we are currently undergoing fourth industrial revolution through internet technology in manufacturing. Machine reliability has always played an important role for manufacturing. Over time machines have become smarter and are capable of collecting their performance as feedback. It has always been a challenge to fix the machines during downtime and machines technicians are also required to keep themselves updated on latest technologies. (Jay Lee, Hung-An Kao, Shanhu Yang, 2014) suggested that machines could be connected together in a cyber-workspace where, machine data could be collected and later analyzed using predictive tools for machine predictability. Connecting the machines through cyberspace enables managers to monitor every machines performance remotely without visiting every machine during the day. Significance of the Research Research Questions and Objectives Implementation of predictive maintenance has been a buzzword for some time in Internet of Things (IoT) neighborhood. In the recent years, many companies have been implementing predictive maintenance activities it to their advantage in order to achieve machine failure free environment. There has been a lot of case studies published in the recent times on implementation of predictive maintenance activities with results closer to machine failure free operation. Most of research in predictive maintenance in recent times have focused on different methodologies and algorithms implemented in data mining, classification and prediction in order to achieve failure free operation. In the course of literature review it was found that, there has been a lack of research in studying the effect of implementation of predictive maintenance activities throughout manufacturing supply chains. This research study is conducted to answer some of the questions in an industry environment such as (1) What was effect in product flow by implementing predictive maintenance activities? (2) How were the supply chains impacted by the implementation of predictive maintenance activity (3) Was there any effect on the performance of Just-in-time manufacturing? (4) If so, what factors were affected and by how much? (5) Can a model estimate the effect on the performance of Just-in-time in manufacturing before the implementation of predictive maintenance activity? This research study is conducted to answer these questions by collecting and mining data from current manufacturing setup and its supply chains, applying new methods to analyze it and use traditional regression models to predict the performance change in Just-in-time in manufacturing.   The objectives in this research includes The development of a methodology for measuring performance variance in Just-in-time for an industry environment and throughout its supply chains by implementing Predictive maintenance activity. The identification of Just-in-time performance measurement factors that would have significant effect in predicting the performance before implementation of predictive maintenance activity The creation, verification and validation of a model that could estimate the performance variance in Just-in-time for future implementations throughout the supply chain CHAPTER II Literature review Overview JIT in Manufacturing Machine Maintenance All actions appropriate for retaining an item/part/equipment in, or restoring it to, a given condition is known as maintenance (Dhillion, 2002). Each year US manufacturing industry spends about $300 billion on plan maintenance and operations. It is also estimated that approximately 80% of the industry budget goes towards correcting chronic failures of machines, systems and peoples (Latino, 1999). There are 2 types of machine maintenance and are classified as follows. Planned maintenance is generally classified as preventive (PM) and corrective maintenance, while breakdown maintenance is considered as unplanned. Preventive maintenance can be further subdivided into fixed maintenance and predictive maintenance. (Mansor, Ohsato, Sulaiman, 2012). Unplanned Downtime The unscheduled maintenance or repair to return items/equipment to a defined state and carried out because maintenance persons or users perceived deficiencies or failures is known as corrective maintenance (Dhillion, 2002). Planned Downtime There are many definitions to preventive maintenance. All actions carried out on a planned, periodic, and specific schedule to keep an item/equipment in stated working condition through the process of checking and reconditioning is known as preventive maintenance (Dhillion, 2002). In the recent years, PM has been one of the most sought techniques in industries across different areas. One of the main objectives of PM is to keep the machine in running condition through standard inspection methods and correction methods at early deficiency stages. Performing PM activities has some of the advantages such as increasing equipment availability, reduction of overtime, reduction in inventory, improve safety, improve quality, reduces time and cost (Levitt, 1997). Some of the disadvantages of PM are it increases initial cost, damaging equipment, reduces life of parts and using more number of newer parts (Patton, 1983). Fixed maintenance Predictive maintenance Similar to preventive maintenance, predictive maintenance have several definitions. To some workers, predictive maintenance is monitoring the vibration of rotating machinery in an attempt to detect incipient problems and to prevent catastrophic failure or it is monitoring the infrared image of electrical switchgear, motors or other electrical equipment to detect developing problem (Mobley, 2002). According to Dhillion (2002), predictive maintenance is a method of using modern measurement and signal processing methods to accurately diagnose item/ equipment condition during operation. It would not be wrong to say, Predictive maintenance is a complement of preventive maintenance which uses various testing and measuring methods to monitor the equipment status and predict the machine failures. According to Mobley (2002), there are five nondestructive techniques used for predictive maintenance management: vibration monitoring, process parameter monitoring, thermography, tribology, and visual inspection. Predictive maintenance not just limited to manufacturing sectors used various other industry such as water and wastewater utility solutions (Severn Trent Services), Transportation railway (Finnish railway VR Group), Power grids (Israel Electric corporation), Oil and gas industry, wind power (Roland Berger Strategy Consultants, 2014), Airline industry (IBM, 2014), Biotech industry (Cypress Envirosystems, 2008) and many more. Some of the case studies related to manufacturing would be discussed in later part of this report. Case Studies KALYPSO: Predictive analytics and Improved Product design with machine learning Daimler: Automotive manufacturer increases productivity for cylinder-head production by 25 percent IBM Asset Analytics for Manufacturing Equipment in Automotive Israel Electric Corporation moves towards smarter maintenance Fluke Corporation: White Paper: Thermography Roland Berger: Oil and gas Reducing breakdowns and increasing production of highly critical assets Roland Berger: Wind Power Reducing maintenance costs and improving uptime in a challenging operational environment ABB Group: Predictive Maintenance for Heavy Industry Data collection, Data mining and Predictive maintenance methodologies Data Collection Sensor data Historical data Data mining Techniques Signal Processing and Feature Extraction Principle Component Analysis (PCA) based fault detection Predictive Maintenance methodologies Health Assessment Self-organizing map (SOM) Performance Prediction Health Diagnosis Self-organizing map (SOM) References Latino, C.J., Hidden Treasure: Eliminating Chronic Failures Can Cut Maintenance Costs up to 60%, Report, Reliability Center, Hopewell, Virginia, 1999 M.A. Mansor, A. Ohsato and S. Sulaiman, KNOWLEDGE MANAGEMENT FOR MAINTENANCE ACTIVITIES IN THE MANUFACTURING SECTOR, International Journal of Automotive and Mechanical Engineering, SSN: 2229-8649 (Print); ISSN: 2180-1606 (Online); Volume 5, pp. 612-621, January-June 2012 Levitt, J., Managing preventive maintenance, Maintenance technology, February 1997, 20-30. Mobley, R Keith, An Introduction to predictive maintenance, 2002, 2nd ed, ISBN 0-7506-7531-4

Saturday, January 18, 2020

The Hunters: Moonsong Chapter Five

The sun was way too bright. Bonnie shielded her eyes with one hand and glanced anxiously around as she walked across the quad toward the bookstore. It had taken her a long time to fal asleep after getting back to their room the night before. What if some crazy person was stalking the campus? It's broad daylight, she told herself. There are people everywhere. I have nothing to be afraid of. But bad things could happen during the day, too. Girls got lured into cars by horrible men, or hit over the head and taken to dark places. Monsters didn't just lurk in the night. After al , she knew several vampires who strol ed around during the day al the time. Damon and Stefan didn't scare her, not anymore, but there were other daytime monsters. I just want to feel safe for once, she thought wistful y. She was coming up on the area the police had been searching the night before, stil blocked off with yel ow tape. Students were standing nearby in groups of two or three, talking in low voices. Bonnie spied a reddish-brown stain across the path that she thought might be blood, and she walked faster as she passed it. There was a rustling in the bushes. Bonnie sped up even more, picturing a wild-eyed attacker hiding in the undergrowth, and glanced around nervously. No one was looking in her direction. Would they help her if she screamed? She risked another look back at the bush – should she just take off running? – and stopped, embarrassed by the furious thumping of her heart. A cute little squirrel hopped hesitantly from under the branches. It sniffed the air, then dashed across the path and up a tree behind the police tape. â€Å"Honestly, Bonnie McCul ough, you're a moron,† Bonnie muttered to herself. A guy passing her in the other direction overheard her and snickered, making Bonnie blush furiously. By the time she got to the bookstore, she'd gotten her blushing under control. Having the typical redhead's complexion was a pain – everything she felt was broadcast by the flush or paleness of her skin. With any luck, though, she'd be able to handle a simple trip to buy books without humiliating herself. Bonnie had started getting acquainted with the bookstore when she'd had her shopping spree yesterday, but she hadn't real y investigated the book side of the store. Today, though, she had the book list for the classes she'd registered for, and she needed to stock up for some serious studying. She'd never been a huge fan of school, but maybe col ege would be different. With a resolute squaring of her shoulders, she turned determinedly away from the shiny stuff and toward the textbooks. The book lists were awful y long, though. She found the fat Intro to Psychology textbook with a sense of satisfaction: this would definitely give her the terminology to diagnose her friends. The freshman English seminar she was assigned to covered a slew of novels, so she wandered through the fiction section, pul ing The Red and the Black, Oliver Twist, and The Age of Innocence off the shelves as she passed. She rounded a corner in search of the rest of the Ws, intent on adding To the Lighthouse to her growing stack of books, and froze. Zander. Beautiful, beautiful Zander was draped graceful y next to a bookshelf, his white-blond head bent over a book. He hadn't seen her yet, so Bonnie immediately ducked back into the previous aisle. She leaned against the wal , breathing hard. She could feel her cheeks heating up again, that awful tel tale blush. Careful y, she peeked back around the corner. He hadn't noticed her; he was stil reading intently. He was wearing a gray T-shirt today, and his soft-looking hair curled a bit at the nape of his neck. His face looked sort of sad with those gorgeous blue eyes hidden beneath his long lashes and no sign of that fabulous smile. There were dark shadows under his eyes. Bonnie's first instinct was to sneak away. She could wait and find the Virginia Woolf book tomorrow; it wasn't like she was going to read it today. She real y didn't want Zander to think she was stalking him. It would be better if he saw her somewhere, when she wasn't paying attention. If he approached her, she'd know he was interested. After al , maybe he wasn't interested in Bonnie. He'd been kind of flirtatious when he'd run into her, but he'd nearly knocked her down. What if he was just being friendly? What if he didn't even remember Bonnie? Nope, better to take off this time and wait til she was better prepared. She wasn't even wearing eyeliner, for heaven's sake. Making up her mind, Bonnie turned firmly away. But, on the other hand†¦ Bonnie hesitated. There'd been a connection between them, hadn't there? She'd felt something when her eyes met his. And he'd smiled at her like he was real y seeing her, past the fluff and fluster. And what about the resolution she'd made the day before, walking to her dorm from this very same bookstore? If she was going to become a terrific, confident, stepping-out-of-the-shadows kind of person, she couldn't run away every time she saw a boy she liked. Bonnie had always admired the way that Elena managed to get what she wanted. Elena just went after it and nothing got in her way. When Stefan had first come to Fel ‘s Church, he hadn't wanted anything to do with Elena, certainly not to fal into her arms and start some kind of amazing eternal romance. But Elena hadn't cared. She was going to have Stefan, even if it kil ed her. And, Well, it had kil ed her, hadn't it? Bonnie shivered. Bonnie shook her head a little. The point was, if you wanted to find love, you couldn't be afraid of trying, could you? She stuck her chin determinedly into the air. At least she wasn't blushing anymore. Her cheeks were so cold, she was probably as white as a snowwoman, but she definitely wasn't blushing. So that was something. Before she could change her mind again, she walked quickly around the corner back into the aisle where Zander stood reading. â€Å"Hi!† she said, her voice squeaking a tiny bit. â€Å"Zander!† He looked up, and that amazing, beautiful smile spread across his face. â€Å"Bonnie!† he said enthusiastical y. â€Å"Hey, I'm real y glad to see you. I was thinking about you earlier.† â€Å"You were?† Bonnie asked, and immediately wanted to kick herself at how overly enthusiastic she sounded. â€Å"Yeah,† he said softly. â€Å"I was.† His sky-blue eyes held hers. â€Å"I was wishing I'd gotten your phone number.† â€Å"You were?† Bonnie asked again, and this time didn't even worry about how she sounded. â€Å"Sure,† he said. He scuffed his feet against the carpet, like he was a little nervous, and a warmth blossomed inside Bonnie. He was nervous talking to her! â€Å"I was thinking,† Zander went on, â€Å"maybe we could do something sometime. I mean, if you wanted to.† â€Å"Oh,† Bonnie said. â€Å"I mean, yes! I would want to. If you did.† Zander smiled again, and it was as if their little corner of the fiction section was lit up with a glowing light. Bonnie had to keep herself from staggering backward, he was so gorgeous. â€Å"How about this weekend?† Zander asked, and Bonnie, feeling suddenly as light and buoyant as though she could float up into the air, smiled back. Meredith stepped her left foot behind her and raised her right heel, moving into a back stance as she brought her hands up sharply, fists together, in a blocking move. Then she slid her foot sideways into a front stance and punched forward with the fist of her left hand. She loved running through a taekwondo form. Each movement was choreographed, and the only thing to do was to practice over and over until the whole form flowed in a model of precision, grace, and control. Taekwondo forms were perfectible, and Meredith enjoyed perfection. The most glorious thing about them was that once she knew her forms so Wellthat they were as natural as breathing, she could be ready for anything. In a fight, she would be able to sense what her opponent's next move would be and counter with a block or a kick or a punch without even thinking. She turned swiftly, blocked high with her right hand and low with her left. It was the preparation, Meredith knew. If she was so prepared that her body could sense what move she needed to make without her brain having to get involved, then she would be able to truly protect herself and everyone else around her. A few weeks ago, when she and her friends had been under attack from the phantom and she'd sprained her ankle, only Stefan had been left with Power enough to defend Fel ‘s Church. Stefan, a vampire. Meredith's lips tightened as she automatical y kicked forward with her right foot, slid into a tiger stance, and blocked with her left hand. She liked Stefan, and she trusted him, she real y did, but stil †¦ She could picture generation upon generation of Sulezes rol ing over in their graves, cursing her, if they knew that she had left herself and her friends so vulnerable, with only a vampire between themselves and danger. Vampires were the enemy. Not Stefan, of course. She knew, despite al her training, that she could put her faith in Stefan. Damon, on the other hand†¦ However useful Damon had been in a couple of battles, however reasonably pleasant and, frankly, out-of-character he had behaved for the last few weeks, Meredith couldn't bring herself to trust him. But if she trained hard, if she perfected herself as a warrior, Meredith wouldn't have to. She moved into a right front stance and, sharp and clean, punched forward with her right hand. â€Å"Nice punch,† said a voice behind her. Meredith turned to see a short-haired African American girl leaning against the door of the practice room, watching her. â€Å"Thanks,† said Meredith, surprised. The girl strol ed into the room. â€Å"What are you,† she asked, â€Å"a black belt?† â€Å"Yes,† Meredith said, and couldn't help adding proudly, â€Å"in taekwondo and karate.† â€Å"Hmm,† the girl said, her eyes sparkling. â€Å"I do taekwondo and aikido myself. My name's Samantha. I've been looking for a sparring partner. Interested?† Despite the casualness of her tone, Samantha was bouncing eagerly on the bal s of her feet, a mischievous smile flickering at the corners of her mouth, and Meredith's eyes narrowed. â€Å"Sure,† she said, her attitude light. â€Å"Show me what you've got.† Samantha's smile broadened. She kicked off her shoes and stepped onto the practice mat next to Meredith. They faced off, assessing each other. She was a head shorter than Meredith, thin, but wiry and sleekly muscled, and she moved as graceful y as a cat. The anticipation in the girl's eyes betrayed Samantha's belief that Meredith would be easy to beat. She was thinking that Meredith was one of those trainees who was al form and technique with no real fighting instinct. Meredith knew that kind of fighter Well, had met them often enough in competitions. If that was what Samantha thought of Meredith, she was in for a surprise. â€Å"Ready?† Samantha asked. At Meredith's nod, she immediately launched a punch while bringing the opposite-side foot around in an attempt to sweep Meredith off her feet. Meredith reacted instinctively, blocking the blow, dodging the foot, then sweeping a kick of her own, which Samantha avoided, grinning with simple pleasure. They exchanged a few more blows and kicks, and, against her wil , Meredith was impressed. This girl was fast, faster than most of the fighters Meredith had faced before, even at the black-belt level, and much stronger than she looked. She was too cocky, though, an aggressive fighter instead of a defensive one; the way she'd hurried to strike the first blow showed that. Meredith could use that cockiness against her. Samantha shifted her weight, and Meredith slid in below her defenses, giving a fast spin heel kick that hit Samantha firmly on the upper thigh. She staggered a bit, and Meredith moved out of range quickly. Samantha's face changed immediately. She was getting angry now, Meredith could tel , and that, too, was a weakness. She was frowning, her lips tight, while Meredith kept her own face purposeful y blank. Samantha's fists and feet were moving quickly, but she lost some accuracy as she sped up. Meredith pretended to fal back under the assault, feinting to keep her opponent off-balance, al owing herself to be backed toward a corner while stil blocking Samantha's blows. When she was almost cornered, she jammed her arm against Samantha's fist, stopping her before she could ful y extend her blow, and swept a foot under hers. Samantha tripped, caught by Meredith's low kick, and fel heavily to the mat. She lay there and just stared up at Meredith for a moment, face stunned, while Meredith hovered over her, suddenly uncertain. Had she hurt Samantha? Was the girl going to be angry and storm off? Then Samantha's face blossomed into a wide, glowing smile. â€Å"That was awesome!† she said. â€Å"Can you show me that move?†

Friday, January 10, 2020

Top Student Exchange Essay Samples Tips!

Top Student Exchange Essay Samples Tips! Student Exchange Essay Samples Secrets That No One Else Knows About Don't neglect to discuss the way your participation in a student exchange program would bring both communities together. Please be aware, only 1 application per student is going to be accepted. Some teachers believe that international student exchange would be helpful for all teenage school students. Advantages and disadvantages of international student they think that international student exchange would be beneficial for all teenage school students. You don't need to return to school to prepare for the GED test. GED Online permits you to prepare for the GED test by employing online classes and practice tests. Practice tests are the best method to receive ready. Many folks use to the web to discover things to read that we use in different ways later. You may rather not come home. Other than that, the students have the accessibility to the world wide web for 24 hours per day as wifi is available all over the school compound. Thus, it's extremely important to look after the phone carefully. If you would like to figure out how to compose an excellent persuasive essay, you're looking in the proper place! Possessing a well written introduction is crucial to a thriving essay. A shy person won't ever create a very good persuasive essay. Which is the reason why we here give you some persuasive essay samples that could assist you with your own. Sample persuasive essays can also offer inspiration on topics to write on in addition to serve as examples about how to compose your essay. A persuasive essay has to be able to grab the interest of the folks reading it easily. The greatest persuasive short essays often concentrate on controversial problems. Persuasive writing can be hard, particularly when you're made to face with a close-minded audience. Don't forget that any argumentative essay sample you'll discover on the internet will require a full rewriting in order to prevent plagiarism. Begin with general subjects that you are conversant with then narrow down to a particular topic. Possessing excellent research abilities and selecting a superb topic is critical. Then you're interested in figuring out how to compose persuasive paper. After you settle on the subject and pick the position on which you will base your essay, the remainder of the job can then begin. Today's lesson might be a bit dull, but it's crucial for future work. Possessing a study program is one significant facet which helps in an exceptional organization along with creating a feeling of accountability. An excellent writer must know more about the significance of superior hook. There isn't any doubt your student exchange essay may be very good indicator of your personality, so make every attempt to communicate your enthusiasm for studying abroad and enable the student exchange program officials learn about your special qualities. In such a scenario, a student is needed to choose a proper topic to write about. Characteristics of Student Exchange Essay Samples Your persuasive argument is going to be made stronger if you're able to demonstrate that you're passionate ab out this issue and have a strong opinion one way or the other. The simplest approach to figure out the kind of an essay is to realize the writer's point of view. Your persuasive essay will have many paragraphs. A self introduction essay is in the majority of cases written utilizing the very first person perspective. In your introduction paragraph, it is sufficient to introduce the topic and supply meaningful background details. The remainder of the paragraph should argue the major point. Such a paragraph might incorporate a concise overview of the ideas to be discussed in body of the paper along with other information related to your paper's argument. Each body paragraph should concentrate on a single argument, called the most important point. At times it's far better come across other recently returned students, or even people who've been back for decades. Trust that you'll have friends. Though your year abroad was probably of wonderful value to you, you might not have had the identical emotional attachment to people which other students describe. Though people believe education is a correct and will make society, generally, a better place for everybody, others feel there's no authentic way to provide a free college education as colleges would still must be funded (likely through tax dol lars).

Wednesday, January 1, 2020

The Dream Sequence From The Big Lebowski - 1432 Words

The Gutterballs dream sequence from The Big Lebowski incorporates images that stem from experiences earlier in the movie: each image is a memory from The Dude s real life. The dream strips the dream-thoughts of their high intensity and transfers them to these images that, due to overdetermination, have intensity values higher than what they originally were: a transference and displacement of physical intensities occurs†¦ and it is as a result that the difference between the text of the dream-content and that of the dream-thoughts comes about (Freud 820). The dream, through the process of condensation, compresses all meaning from the unconscious mind into the images shown (Freud 819) and links them together in an attempt to convey the dream-wish that lies at the centre of the dream-thoughts. By unravelling the dream-thoughts, the viewer is able to recognize that Maude represents women in Gutterballs and The Dude s desire for comfortableness with the reality of female genitalia, b ut remains inaccessible due the fear of castration that comes with the confrontation of a woman s lack of a phallus. Thus, The Dude requires the fetishizing of bowling in order to access Maude and her symbolic meaning. The manifest content of the dream, the physical images of the dream, are highly overdetermined from an original source: multiple determination must be of importance in choosing what particular elements shall enter a dream (Freud 820). Each image seen in the dream can be tracedShow MoreRelatedThe Big Lebowski3723 Words   |  15 PagesMike Preston Lisa Hemminger Art is Film 26 February 2010 â€Å"All the Dude ever wanted was his rug back† To the casual viewer The Big Lebowski, a 1998 film written by film maker brothers Ethan and Joel Coen and directed by Joel, would appear to be a comedy rip off of the 1940’s Los Angeles detective film The Big Sleep by Howard Hawks. It features a hippie dropout from the seventies named â€Å"the Dude† (Jeff Bridges) who gets caught up with his bowler buddies Walter (John Goodman) and Donny (Steve Buscemi)