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1

21 CFR 870.4220 - Cardiopulmonary bypass heart-lung machine console.  

Code of Federal Regulations, 2013 CFR

...Cardiopulmonary bypass heart-lung machine console. 870.4220 Section 870...Cardiopulmonary bypass heart-lung machine console. (a) Identification. A cardiopulmonary bypass heart-lung machine console is a device that...

2013-04-01

2

21 CFR 870.4220 - Cardiopulmonary bypass heart-lung machine console.  

Code of Federal Regulations, 2010 CFR

...false Cardiopulmonary bypass heart-lung machine console. 870.4220 Section...4220 Cardiopulmonary bypass heart-lung machine console. (a) Identification. A cardiopulmonary bypass heart-lung machine console is a device...

2010-04-01

3

21 CFR 870.4220 - Cardiopulmonary bypass heart-lung machine console.  

Code of Federal Regulations, 2010 CFR

...false Cardiopulmonary bypass heart-lung machine console. 870.4220 Section...4220 Cardiopulmonary bypass heart-lung machine console. (a) Identification. A cardiopulmonary bypass heart-lung machine console is a device...

2009-04-01

4

A disposable heart-lung machine. Results of animal testing.  

PubMed

A small wave propagation pump (WPP) was incorporated into oxygenators to create a disposable heart-lung machine. The WPP provides undirectional micropulsatile laminar flow of 8 L/min against 800 mmHg. The smaller WPP can generate 4 L/min against 400 mmHg (cardioplegia), or reversed, and can create up to 150 mmHg negative pressure for suction. Power needs were 110 volts and 0.5 amps or 24 volts DC and 1.5 amps. The WPP is self priming (20 cc) and de-aired in less than 3 min. Seven dogs (average weight, 36 kg) were supported for 3 hrs. Flows could accurately be adjusted from 0.005 to 8 L/min. Flow through the oxygenator and perfusion circuit averaged 3.1 L/min (2.0 to 4 L/min). Serial analysis of blood samples showed minimal hemolysis and no significant change in hematocrit, hemoglobin, white blood count, red blood count, or platelet count (p > 0.01). The inexpensive WPP oxygenator combination function as a disposable heart-lung machine. PMID:8268529

Phillips, S J; Thornton, K; Barker, L; Zeff, R H; Balentine, B

5

Development of a miniaturized heart-lung machine for neonates with congenital heart defect.  

PubMed

Predominantly, standard adult heart lung machines are used for pediatric cardiac surgery, only with individually downsized components. Downsizing is limited, e.g., by the required gas exchange surface. To diminish complications, we developed a new miniaturized heart lung machine (MiniHLM) for neonates, with significantly reduced priming volume and blood contact surface by integration of all major system components in one single device. In particular, a rotary blood pump is centrically integrated into the oxygenator and the cardiotomy reservoir with integrated heat exchanger is directly connected. Thus, tubing is only necessary between patient and MiniHLM. A total priming volume of 102 ml could be achieved for the entire extracorporeal circuit (including arterial/venous line), in contrast to the currently smallest device on the market with 213 ml. In first animal experiments with female New Zealand rabbits, the MiniHLM guaranteed both a sufficient gas exchange and an adequate blood flow; 12 rabbits could successfully be weaned off after 1 hour of aortic clamp time. The first in vitro and in vivo tests confirm the concept of the MiniHLM. Its low priming volume and blood contact surface may significantly reduce complications during heart surgery in neonates. PMID:18812743

Arens, Jutta; Schnöring, Heike; Reisch, Fabian; Vázquez-Jiménez, Jaime F; Schmitz-Rode, Thomas; Steinseifer, Ulrich

6

Comparative assessment of coagulation changes induced by two different types of heart-lung machine.  

PubMed

The cardiopulmonary bypass (CPB) used in heart surgery has a deleterious effect on hemostasis. The aim of our study was to assess by means of standard laboratory and point-of-care methods changes induced by CPB in coagulation parameters, particularly in platelet function, and to determine whether these changes differ depending on the type of heart-lung machine (HLM) used: minimal extracorporeal circulation system (MECC) and standard HLM. The study enrolled 88 patients scheduled for coronary artery bypass surgery performed on pump. Forty-four interventions were performed with MECC and 44 with standard HLM. Blood was sampled preoperatively, after 30 min on CPB, after weaning from CPB, and 24 h postoperatively. Coagulation and platelet function were assessed using multiple electrode aggregometry (MEA), rotation thromboelastometry, as well as standard laboratory tests. Rotation thromboelastometry and standard laboratory reflected significantly impaired hemostasis after weaning from CPB but no significant differences between the two groups at different time points. Aggregation decreased significantly in both groups as early as 30 min after the institution of CPB (P < 0.05, Mann-Whitney U-test) and recovered within the first 24 h postoperatively, without reaching the preoperative level. Intraoperatively, aggregometry values reflected a significantly more severe reduction of platelet function in standard HLM group than in the MECC group (P < 0.01, ProcMixed test). Our findings suggest that MEA and thromboelastometry reflect impairment of coagulation in cardiac surgery performed on different types of HLM and that platelet function is less affected by MECC than by standard HLM. PMID:19839992

Rahe-Meyer, Niels; Solomon, Cristina; Tokuno, Marie-Louise; Winterhalter, Michael; Shrestha, Malakh; Hahn, Andreas; Tanaka, Kenichi

2009-10-16

7

National Heart, Lung, and Blood Institute  

MedlinePLUS

... Program provides global leadership for research, training, and education programs to promote research in the areas of HIV-related heart, lung, and blood diseases, as well as blood-based therapies. Learn more 1 2 3 4 Health ...

8

National Heart, Lung, and Blood Institute  

NSDL National Science Digital Library

The National Heart, Lung, and Blood Institute has crafted this excellent collection of materials for health care professionals. The materials are divided into a dozen sections, including Lung Information, Sleep Information, Interactive Tools and Resources, and Continuing Education Opportunities. The Interactive Tools and Resources area is a gem, as it includes applications for mobile devices such as a menu planner, a Body Mass Index (BMI) calculator, and an asthma mortality map. The Clinical Practice Guidelines area features reports crafted at professional development conferences that deal with cholesterol, obesity, and asthma. Additionally, the Continuing Education Opportunities area features guides to cultural competency and information about upcoming conferences and seminars.

9

78 FR 63483 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...Institutes of Health National Heart, Lung, and Blood Institute; Notice of Closed Meetings Pursuant...Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel; Atlas...Review/DERA, National Heart, Lung, and Blood Institute, 6701 Rockledge Drive,...

2013-10-24

10

76 FR 71580 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...National Institutes of Health National Heart, Lung, and Blood Institute; Notice of Closed...Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis...Scientific Review/DERA, National Heart, Lung, and Blood Institute, 6701...

2011-11-18

11

77 FR 1703 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...National Institutes of Health National Heart, Lung, and Blood Institute; Notice of Closed...Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis...Scientific Review/DERA, National Heart, Lung, and Blood Institute, 6701...

2012-01-11

12

75 FR 71450 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...National Institutes of Health National Heart, Lung, and Blood Institute; Notice of Closed...Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis...Scientific Review/DERA, National Heart, Lung, and Blood Institute, 6701...

2010-11-23

13

78 FR 11657 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...National Heart, Lung, and Blood Institute; Notice of Closed...National Heart, Lung, and Blood Institute Special Emphasis Panel; Allogeneic Transplant Recipient Research Resource...National Heart, Lung, and Blood Institute, 6701...

2013-02-19

14

[Chronic renal failure after heart, lung, liver, or intestine transplantation].  

PubMed

Acute and especially chronic renal failure (CRF) are relatively common and important risk factor for morbidity and mortality in patients after heart, lung, liver or intestine transplantation. Numerous factors contribute to the development of CRF in this group of patients, like treatment with calcineurin inhibitors and other nephrotoxic drugs in the perioperative period, hemodynamical changes during and after the surgery, preexistent renal disease, hypertension, diabetes mellitus, dyslipidemia and anemia. Pretransplant evaluation of renal function is mandatory to predict which patients have increased risk for development of CRF. In the posttransplantation course it is necessary to timely diagnose and treat renal failure, while patients with insufficient renal function have 4.55-fold increased risk of death compared to patients with normal renal function. Special problem is diagnostic approach to patients with suspected chronic renal disease who are candidates for transplantation of other parenhimatose organs. Diagnostic value of serum creatinine and estimation of renal function based on its value is very limited. Gold diagnostic standard is radioisotope estimation of glomerular filtration, but this method is not widely available. It seems that this problem may be solved with the use of cystatin C, but this approach needs to be validated in large studies. Numerous different immunosuppressive drugs available on the market enable individualization of immunosuppression. Different drugs combinations may have less nephrotoxic potential, but one must be careful because of the possible risk of organ rejection with the change of immunosuppression. Use of angiotensin convertase enzyme inhibitors and/or angiotensin receptor blockers, statins with drugs for control of hyperglycemia, may prevent or postpone development of CRF. Although technical advances of contemporary hemodialysis machines and peritoneal dialysis equipment enable well tolerated dialysis even in critically ill patients, renal transplantation remains the method of choice for treatment of patients with transplanted parenhimatous organ that developed CRF. PMID:18578334

Kes, Petar; Basi?-Juki?, Nikolina; Juri?, Ivana

2008-01-01

15

78 FR 57866 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...Committee: National Heart, Lung, and Blood...Myeloid Dysplasia Diseases. Date: October...Committee: National Heart, Lung, and Blood...Myeloid Dysplasia Diseases. Date: October...Research; 93.837, Heart and Vascular Diseases Research;...

2013-09-20

16

Caesarean section in patients with heart-lung transplants: a report of three cases and review  

Microsoft Academic Search

There are increasing numbers of combined heart-lung transplants being carried out in young people for end-stage pulmonary disease. There have-to-date been few reports of pregnancy in heart-lung transplant recipients. We report on the successful outcome of three pregnancies involving two patients following heart-lung transplantation. The importance of an interdisciplinary approach to the care of such patients throughout pregnancy is clear.

C. D. Rigg; V. E. Bythell; M. R. Bryson; J. Halshaw; J. M. Davidson

2000-01-01

17

Cardiorespiratory Function and Pathological Findings in Heart-Lung Block Reimplanted after Hypothermic Preservation  

Microsoft Academic Search

A good result from the heart-lung transplantation depends on the quality of the preservation of cardiopulmonary transplants. To determine the functional and pathological status of the heart-lung block after preservation for several hours, we performed 10 heterologous heart-lung transplantations in Beagle dogs (weight 13.5 kg) under extracorporeal circulation. Weight and length compatibility between donor and receiver was ensured. Measurements of

C. Saunier; J. P. Gille; J. P. Villemot; F. Schrijen; M. Clavey; T. Hubert; C. Glace; B. Foliguet

1988-01-01

18

Aortic valve replacement for late infective endocarditis after heart-lung transplantation.  

PubMed

Infective endocarditis is a rare but life-threatening complication of heart and heart-lung transplantation. We describe a 32-year-old woman who developed aortic valvular endocarditis following heart-lung transplantation. Enterococcus was the infective organism. The patient's condition was successfully managed using prolonged intravenous antibiotic therapy and aortic valve replacement. PMID:16387164

Sayeed, R; Drain, A J; Sivasothy, P S; Large, S R; Wallwork, J

2005-12-01

19

75 FR 34461 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel, Effectiveness Research on Smoking Cessation in Hospitalized Patients. Date: June 22-23, 2010. Time: 6 p.m. to 5 p.m. Agenda: To review and...

2010-06-17

20

77 FR 73037 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...amended. The grant applications and...associated with the grant applications...Emphasis Panel Short-term Heart, Lung and Blood Training. Date: January...review and evaluate grant applications...L. Constant, Ph.D.,...

2012-12-07

21

77 FR 54922 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel; Program Project Grant in Hypoxia and Sleep Medicine. Date: September 28, 2012. Time: 8 a.m. to 12 p.m. Agenda: To review and evaluate grant...

2012-09-06

22

78 FR 45933 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...Heart, Lung, and Blood Institute Special Emphasis Panel Cardiovascular Research Resource. Date: August 22, 2013. Time: 2:30...Domestic Assistance Program Nos. 93.233, National Center for Sleep Disorders Research; 93.837, Heart and Vascular...

2013-07-30

23

77 FR 28612 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...of personal privacy. Name of Committee National Heart, Lung, and Blood Institute Special Emphasis Panel; Early Cystic Fibrosis in Humans. Date: June 5, 2012. Time: 8:00 AM to 5:00 PM. Agenda: To review and evaluate grant...

2012-05-15

24

78 FR 60299 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel, NHLBI Program Project for Atherosclerosis. Date: October 29, 2013. Time: 8:00 a.m. to 1:00 p.m. Agenda: To review and evaluate grant...

2013-10-01

25

The Role of School Health Education in Preventing Heart, Lung, and Blood Diseases.  

ERIC Educational Resources Information Center

|This article reviews the scope and dynamics of heart, lung, and blood diseases and explains the need for research on primary prevention programs for children. Suggestions for school health education programs that contribute to disease prevention are delineated. (Author/DF)|

Kolbe, Lloyd J.; Newman, Ian M.

1984-01-01

26

76 FR 27068 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...unwarranted invasion of personal privacy. Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel, SBIR Contract Review. Date: June 2, 2011. Time: 1 p.m. to 4 p.m. Agenda: To review and evaluate contract proposals....

2011-05-10

27

77 FR 59939 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...unwarranted invasion of personal privacy. Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel; SBIR Phase IIB Bridge Awards. Date: October 24, 2012. Time: 8:00 a.m. to 5:00 p.m. Agenda: To review and...

2012-10-01

28

78 FR 10185 - National Heart, Lung, and Blood Institute; Notice of Closed Meeting  

Federal Register 2010, 2011, 2012, 2013

...unwarranted invasion of personal privacy. Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel; SBIR Topic 72: New Methods to Detect and Assess Myocardial Fibrosis. Date: March 6, 2013. Time: 12:30 p.m. to 4:30...

2013-02-13

29

76 FR 78285 - National Heart, Lung, and Blood Institute; Notice of Closed Meetings  

Federal Register 2010, 2011, 2012, 2013

...unwarranted invasion of personal privacy. Name of Committee: National Heart, Lung, and Blood Institute Special Emphasis Panel,SBIR Topic 56 Blood Donor Screening Test for Babesia. Date: January 9, 2012. Time: 11 a.m. to 12 p.m. Agenda: To...

2011-12-16

30

Prospective Psychological Evaluation of Pediatric Heart and Heart-Lung Recipients  

Microsoft Academic Search

Objective To study psychological adjustment in children and adolescents before undergoing heart or heart-lung transplantation and to reevaluate them at 6, 12, and 24 months after surgery. Methods Previously validated measures of behavior and depression were administered to children, their parents, and teachers. Parents also completed a measure of distress. Results Before transplantation, participants and parents obtained significantly higher scores

Jo Wray; Rosemary Radley-Smith

2007-01-01

31

The cough response to ultrasonically nebulized distilled water in heart-lung transplantation patients  

SciTech Connect

As a result of clinical heart-lung transplantation, the lungs are denervated below the level of the tracheal anastomosis. It has been questioned whether afferent vagal reinnervation occurs after surgery. Here we report the cough frequency, during inhalation of ultrasonically nebulized distilled water, of 15 heart-lung transplant patients studied 6 wk to 36 months after surgery. They were compared with 15 normal subjects of a similar age and sex. The distribution of the aerosol was studied in five normal subjects using /sup 99m/technetium diethylene triamine pentaacetate (/sup 99m/Tc-DTPA) in saline. In seven patients, the sensitivity of the laryngeal mucosa to instilled distilled water (0.2 ml) was tested at the time of fiberoptic bronchoscopy by recording the cough response. Ten percent of the aerosol was deposited onto the larynx and trachea, 56% on the central airways, and 34% in the periphery of the lung. The cough response to the aerosol was strikingly diminished in the patients compared with normal subjects (p less than 0.001), but all seven patients coughed when distilled water was instilled onto the larynx. As expected, the laryngeal mucosa of heart-lung transplant patients remains sensitive to distilled water. However, the diminished coughing when the distilled water is distributed by aerosol to the central airways supports the view that vagal afferent nerves do not reinnervate the lungs after heart-lung transplantation, up to 36 months after surgery.

Higenbottam, T.; Jackson, M.; Woolman, P.; Lowry, R.; Wallwork, J.

1989-07-01

32

[8.5 year-follow-up of combined heart-lung transplantation in a patient].  

PubMed

To summarize the case of combined heart-lung transplantation for a patient who survived for 8.5 years. On September 20, 2003, at Second Xiangya Hospital of Central South University, homologous heartlung transplantation was performed on a male patient who was diagnosed with cardiopulmonary failure secondary to congenital ventricular septal defect with severe pulmonary hypertension. Heart-lung allograft was preserved with 1500 mL modified St.Thomas solution and 3000 mL modified LPD solution. Postoperative immunosuppressive therapies included: methylprednisolone and human anti-lymphocyte globulin protein in the induction period; and combination of ciclosporin A, CellCept and prednisolone in the stable period. In 2007, the treatment was changed to CellCept mg, twice a day+FK506 4 mg, twice a day. The patient lived 8.5 years of normal life with cardiac function of NYHA I-II. Echocardiogram showed left ventricular ejection fraction of 61% to 74%. Heart-lung transplantation proved reliable therapy modality for terminal cardiopulmonary failure. Excellent donor organ preservation and proper perioperative treatment are key factors for long-term survival after heart-lung transplantation. PMID:23456080

Shang, Baopeng; Hu, Jianguo; Zhou, Xinmin; Zhang, Wei; Liao, Xiaobo; Li, Jianming

2013-02-01

33

Computational models for the study of heart-lung interactions in mammals  

PubMed Central

[The operation and regulation of the lungs and the heart are closely related. This is evident when examining the anatomy within the thorax cavity, in the brainstem and in the aortic and carotid arteries where chemoreceptors and baroreceptors, which provide feedback affecting the regulation of both organs, are concentrated. This is also evident in phenomena such as respiratory sinus arrhythmia where the heart rate increases during inspiration and decreases during expiration, in other types of synchronization between the heart and the lungs known as cardioventilatory coupling and in the association between heart failure and sleep apnea where breathing is interrupted periodically by periods of no-breathing. The full implication and physiological significance of the cardio-respiratory coupling under normal, pathological or extreme physiological conditions are still unknown and are subject to ongoing investigation both experimentally and theoretically using mathematical models. This paper reviews mathematical models that take heart-lung interactions into account. The main ideas behind low dimensional, phenomenological models for the study of the heart-lung synchronization and sleep apnea are described first. Higher dimensions, physiology-based models are described next. These models can vary widely in detail and scope and are characterized by the way the heart-lung interaction is taken into account: via gas exchange, via the central nervous system, via the mechanical interactions and via time delays. The paper emphasizes the need for the integration of the different sources of heart-lung coupling as well as the different mathematical approaches.

Ben-Tal, Alona

2011-01-01

34

National Heart, Lung, and Blood Institute Report of the Task Force on Research in Epidemiology and Prevention of Cardiovascular Diseases.  

National Technical Information Service (NTIS)

The National Heart, Lung, and Blood Institute (NHLBI) convened a Task Force on Research in Epidemiology and Prevention of Cardiovascular Diseases (CVDs). It developed specific recommendations for research in CVD epidemiology and CVD prevention, as well as...

1994-01-01

35

76 FR 49775 - Food and Drug Administration/National Heart, Lung, and Blood Institute/National Science...  

Federal Register 2010, 2011, 2012, 2013

...and Drug Administration/National Heart, Lung, and Blood Institute/National Science Foundation Public Workshop on Computer...Institutes of Health and the National Science Foundation (NSF). The purpose of...

2011-08-11

36

75 FR 18849 - Food and Drug Administration/National Heart Lung and Blood Institute/National Science Foundation...  

Federal Register 2010, 2011, 2012, 2013

...and Drug Administration/National Heart Lung and Blood Institute/National Science Foundation Workshop on Computer Methods...Institutes of Health and the National Science Foundation. The purpose of the...

2010-04-13

37

Super liquid-repellent gas membranes for carbon dioxide capture and heart-lung machines  

PubMed Central

In a gas membrane, gas is transferred between a liquid and a gas through a microporous membrane. The main challenge is to achieve a high gas transfer while preventing wetting and clogging. With respect to the oxygenation of blood, haemocompatibility is also required. Here we coat macroporous meshes with a superamphiphobic—or liquid repellent—layer to meet this challenge. The superamphiphobic layer consists of a fractal-like network of fluorinated silicon oxide nanospheres; gas trapped between the nanospheres keeps the liquid from contacting the wall of the membrane. We demonstrate the capabilities of the membrane by capturing carbon dioxide gas into a basic aqueous solution and in addition use it to oxygenate blood. Usually, blood tends to clog membranes because of the abundance of blood cells, platelets, proteins and lipids. We show that human blood stored in a superamphiphobic well for 24?h can be poured off without leaving cells or adsorbed protein behind.

Paven, Maxime; Papadopoulos, Periklis; Schottler, Susanne; Deng, Xu; Mailander, Volker; Vollmer, Doris; Butt, Hans-Jurgen

2013-01-01

38

Super liquid-repellent gas membranes for carbon dioxide capture and heart-lung machines.  

PubMed

In a gas membrane, gas is transferred between a liquid and a gas through a microporous membrane. The main challenge is to achieve a high gas transfer while preventing wetting and clogging. With respect to the oxygenation of blood, haemocompatibility is also required. Here we coat macroporous meshes with a superamphiphobic-or liquid repellent-layer to meet this challenge. The superamphiphobic layer consists of a fractal-like network of fluorinated silicon oxide nanospheres; gas trapped between the nanospheres keeps the liquid from contacting the wall of the membrane. We demonstrate the capabilities of the membrane by capturing carbon dioxide gas into a basic aqueous solution and in addition use it to oxygenate blood. Usually, blood tends to clog membranes because of the abundance of blood cells, platelets, proteins and lipids. We show that human blood stored in a superamphiphobic well for 24?h can be poured off without leaving cells or adsorbed protein behind. PMID:24065073

Paven, Maxime; Papadopoulos, Periklis; Schöttler, Susanne; Deng, Xu; Mailänder, Volker; Vollmer, Doris; Butt, Hans-Jürgen

2013-09-25

39

Recommendations of the National Heart, Lung, and Blood Institute Nanotechnology Working Group.  

PubMed

Recent rapid advances in nanotechnology and nanoscience offer a wealth of new opportunities for diagnosis and therapy of cardiovascular, pulmonary, and hematologic diseases and sleep disorders. To review the challenges and opportunities offered by these nascent fields, the National Heart, Lung, and Blood Institute convened a Working Group on Nanotechnology. Working Group participants discussed the various aspects of nanotechnology and its applications to heart, lung, blood, and sleep (HLBS) diseases. This report summarizes their discussions according to scientific opportunities, perceived needs and barriers, specific disease examples, and recommendations on facilitating research in the field. An overarching recommendation of the Working Group was to focus on translational applications of nanotechnology to solve clinical problems. The Working Group recommended the creation of multidisciplinary research centers capable of developing applications of nanotechnology and nanoscience to HLBS research and medicine. Centers would also disseminate technology, materials, and resources and train new investigators. Individual investigators outside these centers should be encouraged to conduct research on the application of nanotechnology to biological and clinical problems. Pilot programs and developmental research are needed to attract new investigators and to stimulate creative, high-impact research. Finally, encouragement of small businesses to develop nanotechnology-based approaches to clinical problems was considered important. PMID:14656908

Buxton, Denis B; Lee, Stephen C; Wickline, Samuel A; Ferrari, Mauro

2003-12-01

40

Elucidating nature's solutions to heart, lung, and blood diseases and sleep disorders.  

PubMed

Evolution has provided a number of animal species with extraordinary phenotypes. Several of these phenotypes allow species to survive and thrive in environmental conditions that mimic disease states in humans. The study of evolved mechanisms responsible for these phenotypes may provide insights into the basis of human disease and guide the design of new therapeutic approaches. Examples include species that tolerate acute or chronic hypoxemia like deep-diving mammals and high-altitude inhabitants, as well as those that hibernate and interrupt their development when exposed to adverse environments. The evolved traits exhibited by these animal species involve modifications of common biological pathways that affect metabolic regulation, organ function, antioxidant defenses, and oxygen transport. In 2006, the National Heart, Lung, and Blood Institute released a funding opportunity announcement to support studies that were designed to elucidate the natural molecular and cellular mechanisms of adaptation in species that tolerate extreme environmental conditions. The rationale for this funding opportunity is detailed in this article, and the specific evolved mechanisms examined in the supported research are described. Also highlighted are past medical advances achieved through the study of animal species that have evolved extraordinary phenotypes as well as the expectations for new understanding of nature's solutions to heart, lung, blood, and sleep disorders through future research in this area. PMID:22461362

Carey, Hannah V; Martin, Sandra L; Horwitz, Barbara A; Yan, Lin; Bailey, Shannon M; Podrabsky, Jason; Storz, Jay F; Ortiz, Rudy M; Wong, Renee P; Lathrop, David A

2012-03-30

41

Elucidating Nature's Solutions to Heart, Lung, and Blood Diseases and Sleep Disorders  

PubMed Central

Evolution has provided a number of animal species with extraordinary phenotypes. Several of these phenotypes allow species to survive and thrive in environmental conditions that mimic disease states in humans. The study of evolved mechanisms that responsible for these phenotypes may provide insights into the basis of human disease and guide the design of new therapeutic approaches. Examples include species that tolerate acute or chronic hypoxemia like deep-diving mammals and high-altitude inhabitants, as well as those that hibernate and interrupt their development when exposed to adverse environments. The evolved traits exhibited by these animal species involve modifications of common biological pathways that affect metabolic regulation, organ function, antioxidant defenses, and oxygen transport. In 2006, the National Heart, Lung, and Blood Institute (NHLBI) released a funding opportunity announcement to support studies that were designed to elucidate the natural molecular and cellular mechanisms of adaptation in species that tolerate extreme environmental conditions. The rationale for this funding opportunity is detailed in this Special Article, and the specific evolved mechanisms examined in the supported research are described. Also highlighted are past medical advances achieved through the study of animal species that have evolved extraordinary phenotypes as well as the expectations for new understanding of nature’s solutions to heart, lung, blood, and sleep disorders through future research in this area.

Carey, Hannah V.; Martin, Sandra L.; Horwitz, Barbara A.; Yan, Lin; Bailey, Shannon M.; Podrabsky, Jason; Storz, Jay F.; Ortiz, Rudy M.; Wong, Renee P.; Lathrop, David A.

2012-01-01

42

Text Categorization of Heart, Lung, and Blood Studies in the Database of Genotypes and Phenotypes (dbGaP) Utilizing n-grams and Metadata Features  

PubMed Central

The database of Genotypes and Phenotypes (dbGaP) allows researchers to understand phenotypic contribution to genetic conditions, generate new hypotheses, confirm previous study results, and identify control populations. However, effective use of the database is hindered by suboptimal study retrieval. Our objective is to evaluate text classification techniques to improve study retrieval in the context of the dbGaP database. We utilized standard machine learning algorithms (naive Bayes, support vector machines, and the C4.5 decision tree) trained on dbGaP study text and incorporated n-gram features and study metadata to identify heart, lung, and blood studies. We used the ?2 feature selection algorithm to identify features that contributed most to classification performance and experimented with dbGaP associated PubMed papers as a proxy for topicality. Classifier performance was favorable in comparison to keyword-based search results. It was determined that text categorization is a useful complement to document retrieval techniques in the dbGaP.

Ross, Mindy K.; Lin, Ko-Wei; Truong, Karen; Kumar, Abhishek; Conway, Mike

2013-01-01

43

Text Categorization of Heart, Lung, and Blood Studies in the Database of Genotypes and Phenotypes (dbGaP) Utilizing n-grams and Metadata Features.  

PubMed

The database of Genotypes and Phenotypes (dbGaP) allows researchers to understand phenotypic contribution to genetic conditions, generate new hypotheses, confirm previous study results, and identify control populations. However, effective use of the database is hindered by suboptimal study retrieval. Our objective is to evaluate text classification techniques to improve study retrieval in the context of the dbGaP database. We utilized standard machine learning algorithms (naive Bayes, support vector machines, and the C4.5 decision tree) trained on dbGaP study text and incorporated n-gram features and study metadata to identify heart, lung, and blood studies. We used the ?(2) feature selection algorithm to identify features that contributed most to classification performance and experimented with dbGaP associated PubMed papers as a proxy for topicality. Classifier performance was favorable in comparison to keyword-based search results. It was determined that text categorization is a useful complement to document retrieval techniques in the dbGaP. PMID:23926434

Ross, Mindy K; Lin, Ko-Wei; Truong, Karen; Kumar, Abhishek; Conway, Mike

2013-07-22

44

RAD in stable lung and heart\\/lung transplant recipients: safety, tolerability, pharmacokinetics, and impact of cystic fibrosis  

Microsoft Academic Search

BackgroundRAD is a novel macrolide with potent immunosuppressive and antiproliferative activities. This study characterizes the safety, tolerability, and pharmacokinetics of two different single oral doses of RAD in stable lung and heart\\/lung transplant recipients with and without cystic fibrosis (CF).

Ramona L Doyle; Marshall I Hertz; Jordan M Dunitz; J. E Loyd; Arlene A Stecenko; Robert L Wong; Kimberly A Chappell; Tim Brazelton; John M Kovarik; Silke Appeldingemanse; Lin Dou; Harold T Smith; David Tudor; Randall E Morris

2001-01-01

45

Assessment and treatment of depression in patients with cardiovascular disease: National heart, lung, and blood institute working group report  

Microsoft Academic Search

Objective: The National Heart, Lung, and Blood Institute convened an interdisciplinary working group of experts to develop recommendations for the assessment and treatment of depression in patients with coronary heart disease (CHD). Method: Consensus of experts. Results: Our current recommendations are that the Beck Depression Inventory-I be employed for epidemiological studies of depression and CHD, that the Patient Health Questionnaire

Karina W. Davidson; David J. Kupfer; J. Thomas Bigger; Robert M. Califf; Robert M. Carney; James C. Coyne; Susan M. Czajkowski; Ellen Frank; Nancy Frasure-Smith; Kenneth E. Freedland; Erika S. Froelicher; Alexander H. Glassman; Wayne J. Katon; Peter G. Kaufmann; Ronald C. Kessler; Helena C. Kraemer; K. Ranga R. Krishnan; François Lespérance; Nina Rieckmann; David S. Sheps; Jerry M. Suls

2006-01-01

46

Quantitative imaging of dynamic structure and function of the heart, lungs and circulation by computerized reconstruction and subtraction techniques  

Microsoft Academic Search

Conventional radiographic imaging techniques are not adequate for determination of the true, dynamic changes in shape and dimensions of the intact working heart, lungs and circulation which are required for accurate quantitative determination of the structure and function of these organ systems. This paper describes a computerized method for obtaining images of the dynamic spatial distribution of x-ray attenuation throughout

Richard A. Robb; Erik L. Ritman; James F. Greenleaf; Ralph E. Sturm; Gabor T. Herman; Peter A. Chevalier; Hsun K. Liu; Earl H. Wood

1976-01-01

47

Effect of Blood Ph and CO2 Tension on the Performance of the Heart-Lung Preparation.  

National Technical Information Service (NTIS)

When the performance of heart-lung preparations was evaluated by the relationship between stroke work and left atrial pressure, a change of the CO2 content of the inspired air from zero to 10 per cent caused a progressive decrease in performance. The use ...

N. S. Nejad E. Ogden

1967-01-01

48

Recommendations of the National Heart, Lung, and Blood Institute working group on cerebrovascular biology and disease.  

PubMed

The National Heart, Lung, and Blood Institute (NHLBI) convened a conference call working group, consisting of experts in stroke and cerebrovascular biology on January 28, 2005. The purpose of this working group was to develop a prioritized set of recommendations for NHLBI to establish a focused and comprehensive set of research activities in cerebrovascular biology and disease. Three thematic areas of research emerged: (1) molecular and cellular neurobiology of cerebral blood vessels, focusing on genomics and proteomics, neurovascular signaling and cerebrovascular embryogenesis, development and plasticity; (2) resource development, involving the development of new methodological approaches for normal and altered function of the neurovascular unit, collaborative research, and training in cerebrovascular pathobiology; and (3) cerebrovascular diseases and translational approaches, addressing vascular mechanisms of disease, the role of risk factors, importance of biomarkers with the ultimate goal of developing new treatments. PMID:16627792

Iadecola, Costantino; Goldman, Stephen S; Harder, David R; Heistad, Donald D; Katusic, Zvonimir S; Moskowitz, Michael A; Simard, J Marc; Sloan, Michael A; Traystman, Richard J; Velletri, Paul A

2006-04-20

49

Recommendations of the National Heart, Lung, and Blood Institute Working Group on Cerebrovascular Biology and Disease  

PubMed Central

The National Heart, Lung, and Blood Institute (NHLBI) convened a conference call working group, consisting of experts in stroke and cerebrovascular biology on January 28, 2005. The purpose of this working group was to develop a prioritized set of recommendations for NHLBI to establish a focused and comprehensive set of research activities in cerebrovascular biology and disease. Three thematic areas of research emerged: (1) molecular and cellular neurobiology of cerebral blood vessels, focusing on genomics and proteomics, neurovascular signaling and cerebrovascular embryogenesis, development and plasticity; (2) resource development, involving the development of new methodological approaches for normal and altered function of the neurovascular unit, collaborative research, and training in cerebrovascular pathobiology; and (3) cerebrovascular diseases and translational approaches, addressing vascular mechanisms of disease, the role of risk factors, importance of biomarkers with the ultimate goal of developing new treatments.

Iadecola, Costantino; Goldman, Stephen S.; Harder, David R.; Heistad, Donald D.; Katusic, Zvonimir S.; Moskowitz, Michael A.; Simard, J. Marc; Sloan, Michael A.; Traystman, Richard J.; Velletri, Paul A.

2009-01-01

50

A Genome-Wide Scan of Pulmonary Function Measures in the National Heart, Lung, and Blood Institute Family Heart Study  

Microsoft Academic Search

Spirometric measures of pulmonary function exhibited high herita- clinically used to characterize lung function. Several studies bility in the National Heart, Lung, and Blood Institute Family Heart have shown evidence for substantial heritability of pulmonary Study. A genome scan of FEV1, FVC, and the ratio of FEV1\\/FVC was function levels as measured by spirometry (5-7). Segregation performed to identify chromosomal

Jemma B. Wilk; Anita L. DeStefano; Donna K. Arnett; Stephen S. Rich; Luc Djousse; Robert O. Crapo; Mark F. Leppert; Michael A. Province; L. Adrienne Cupples; Daniel J. Gottlieb; Richard H. Myers

51

Dietary Linolenic Acid and Fasting Glucose and Insulin: The National Heart, Lung, and Blood Institute Family Heart Study  

Microsoft Academic Search

Objective: To assess whether dietary linolenic acid is associated with fasting insulin and glucose.Research Methods and Procedures: In a cross-sectional design, we studied 3993 non-diabetic participants of the National Heart, Lung, and Blood Institute Family Heart Study 25 to 93 years of age. Linolenic acid was assessed through a food frequency questionnaire, and laboratory data were obtained after at least

Luc Djoussé; Steven C. Hunt; Weihong Tang; John H. Eckfeldt; Michael A. Province; R. Curtis Ellison

2006-01-01

52

NHLBI workshop report: endothelial cell phenotypes in heart, lung, and blood diseases.  

PubMed

Endothelium critically regulates systemic and pulmonary vascular function, playing a central role in hemostasis, inflammation, vasoregulation, angiogenesis, and vascular growth. Indeed, the endothelium integrates signals originating in the circulation with those in the vessel wall to coordinate vascular function. This highly metabolic role differs significantly from the historic view of endothelium, in which it was considered to be merely an inert barrier. New lines of evidence may further change our understanding of endothelium, in regard to both its origin and function. Embryological studies suggest that the endothelium arises from different sites, including angiogenesis of endothelium from macrovascular segments and vasculogenesis of endothelium from microcirculatory segments. These findings suggest an inherent phenotypic distinction between endothelial populations based on their developmental origin. Similarly, diverse environmental cues influence endothelial cell phenotype, critical to not only normal function but also the function of a diseased vessel. Consequently, an improved understanding of site-specific endothelial cell function is essential, particularly with consideration to environmental stimuli present both in the healthy vessel and in development of vasculopathic disease states. The need to examine endothelial cell phenotypes in the context of vascular function served as the basis for a recent workshop sponsored by the National Heart, Lung, and Blood Institute (NHLBI). This report is a synopsis of pertinent topics that were discussed, and future goals and research opportunities identified by the participants of the workshop are presented. PMID:11600404

Stevens, T; Rosenberg, R; Aird, W; Quertermous, T; Johnson, F L; Garcia, J G; Hebbel, R P; Tuder, R M; Garfinkel, S

2001-11-01

53

Physiogenomic resources for rat models of heart, lung and blood disorders.  

PubMed

Cardiovascular disorders are influenced by genetic and environmental factors. The TIGR rodent expression web-based resource (TREX) contains over 2,200 microarray hybridizations, involving over 800 animals from 18 different rat strains. These strains comprise genetically diverse parental animals and a panel of chromosomal substitution strains derived by introgressing individual chromosomes from normotensive Brown Norway (BN/NHsdMcwi) rats into the background of Dahl salt sensitive (SS/JrHsdMcwi) rats. The profiles document gene-expression changes in both genders, four tissues (heart, lung, liver, kidney) and two environmental conditions (normoxia, hypoxia). This translates into almost 400 high-quality direct comparisons (not including replicates) and over 100,000 pairwise comparisons. As each individual chromosomal substitution strain represents on average less than a 5% change from the parental genome, consomic strains provide a useful mechanism to dissect complex traits and identify causative genes. We performed a variety of data-mining manipulations on the profiles and used complementary physiological data from the PhysGen resource to demonstrate how TREX can be used by the cardiovascular community for hypothesis generation. PMID:16415889

Malek, Renae L; Wang, Hong-ying; Kwitek, Anne E; Greene, Andrew S; Bhagabati, Nirmal; Borchardt, Gretta; Cahill, Lisa; Currier, Tracey; Frank, Bryan; Fu, Xianping; Hasinoff, Michael; Howe, Eleanor; Letwin, Noah; Luu, Truong V; Saeed, Alexander; Sajadi, Hedieh; Salzberg, Steven L; Sultana, Razvan; Thiagarajan, Mathangi; Tsai, Jennifer; Veratti, Kathleen; White, Joseph; Quackenbush, John; Jacob, Howard J; Lee, Norman H

2006-01-15

54

Coronary flow in heart-lung preparation affected by cardiopulmonary nerves and arterial PCO2.  

PubMed

Studies on coronary vasodilator drugs utilizing heart-lung preparations (HLP) have been disturbed by a spontaneous gradual increase in coronary blood flow. With the purpose of finding out what would cause the gradual increase, the time course of coronary sinus blood flow (CSBF) was investigated in 20 dog HLPs under four experimental conditions, according to whether cardiopulmonary nerves (CPN) were severed or not and whether CO2 content in the inspiratory gas was high (95% O2-5% CO2) or low (50% O2-50% room air). The gradual increase in CSBF was observed, accompanied by a significant increase in 6-ketoprostaglandin F1 alpha in the arterial blood, only when CPN were intact and, simultaneously, inspiratory CO2 was high. Nevertheless, the hemodynamic parameters, except CSBF, were almost similar under four conditions. These results suggested that CSBF in HLP could be affected via a synthesis and/or a release of prostaglandin I2 by the interaction of CPN and arterial PCO2. PMID:3933367

Kainuma, M; Ichimura, I; Shigei, T; Ishikawa, N

1985-11-01

55

Prostacyclin (epoprostenol) and heart-lung transplantation as treatments for severe pulmonary hypertension.  

PubMed Central

OBJECTIVE--To determine whether epoprostenol (prostacyclin, PGI2) or heart-lung transplantation (HLT), or both improves survival of patients with severe pulmonary hypertension. DESIGN--This was a prospective study where the effects of epoprostenol were compared with conventional treatment. Also, the benefits of epoprostenol and HLT were assessed by comparing survival in this group with that of 120 patients at the Mayo Clinic before HLT and epoprostenol treatment became available. PATIENTS AND INTERVENTIONS--Forty four patients were studied; 25 received continuous epoprostenol over a four year period (mean (SD) cardiac index 1.8 (0.4) 1 min-1 m-2 and mean (SD) pulmonary artery pressure (PAP) 70 (16) mm Hg) and 19 did not (cardiac index 2.1 (0.6) 1 min-1 m-2 and PAP 64 (13) mm Hg). Ten patients underwent HLT: seven had received epoprostenol, and three had not. RESULTS--The therapeutic intervention with epoprostenol, or HLT, or both improved survival compared with the Mayo clinic patients (p = 0.05). Most of the benefit was conferred by epoprostenol, which prolonged survival twofold from a median time of eight to 17 months and doubled the changes of successful HLT. The improved survival with epoprostenol was not related to its immediate capacity to cause pulmonary vasodilation. Those patients who had limited acute pulmonary vasodilation when treated with epoprostenol showed the greatest improvement in survival. CONCLUSIONS--These preliminary results indicate that those pulmonary hypertensive patients with the poorest chance of survival can be helped by epoprostenol and by HLT.

Higenbottam, T W; Spiegelhalter, D; Scott, J P; Fuster, V; Dinh-Xuan, A T; Caine, N; Wallwork, J

1993-01-01

56

A meta-analysis of genome-wide linkage scans for hypertension:The National Heart, Lung and BloodInstitute Family Blood Pressure Program  

Microsoft Academic Search

BackgroundFour multicenter Networks (GenNet, GENOA, HyperGEN, SAPPHIRe) form the National Heart, Lung and Blood Institute Family Blood Pressure Program (FBPP), to search for hypertension\\/blood pressure (BP) genes. The networks used different family designs and targeted multiple ethnic groups, using standardized protocols and definitions. Linkage genome scans were done on samples within each network (N = 6245 relatives).

Michael A. Province; Sharon L. R. Kardia; Koustubh Ranade; Dabeeru C. Rao; Bonnie A. Thiel; Richard S. Cooper; Neil Risch; Stephen T. Turner; David R. Cox; Steven C. Hunt; Alan B. Weder; Eric Boerwinkle

2003-01-01

57

Cardiovascular epidemiology in a changing world--challenges to investigators and the National Heart, Lung, and Blood Institute.  

PubMed

Over the past 60 years, revolutionary discoveries made by epidemiologists have contributed to marked declines in cardiovascular disease morbidity and mortality. Now, in an era of increasingly constrained resources, researchers in cardiovascular epidemiology face a number of challenges that call for novel, paradigm-shifting approaches. In this paper, the authors pose to the community 4 critical questions: 1) How can we avoid wasting resources on studies that provide little incremental knowledge? 2) How can we assure that we direct our resources as economically as possible towards innovative science? 3) How can we be nimble, responding quickly to new opportunities? 4) How can we identify prospectively the most meritorious research questions? Senior program staff at the National Heart, Lung, and Blood Institute invite the epidemiology community to join them in an ongoing Web-based blog conversation so that together we might develop novel approaches that will facilitate the next generation of high-impact discoveries. PMID:22415032

Sorlie, Paul D; Bild, Diane E; Lauer, Michael S

2012-03-12

58

Influence of red blood cells on lung function in an ex vivo rat heart-lung model.  

PubMed

Crystalloid perfusates commonly are utilized for lung preservation in extracorporeal small animal lung models. However, the function of these grafts is limited. In a new ex-vivo rat heart-lung model the role of red blood cells added to the crystalloid perfusate was investigated. Heart-lung blocks were rapidly excised (n = 9, each group) and the blocks were connected to the extracorporeal perfusion circuit using Krebs-Henseleit solution (KH) or KH with washed bovine red blood cells (hematocrit 38%) (KHRBC). The lungs were ventilated with room air. The coronary system was perfused via the aortic root with oxygenated perfusate. The lungs were perfused via the right ventricle with deoxygenated perfusate (PO2 15 mm Hg). Venoarterial improvement of oxygenation, pulmonary vascular resistance (PVR), and peak inspiratory pressure (PIP) were continuously monitored for 50 min. At the end of the experiment the wet/dry (W/D) ratio was determined using the mediastinal lung lobe while the remaining lung was used for light microscopic (LM) evaluation. After 30 min of perfusion, lung function was significantly better in the KHRBC group (PVR (KH): 752 +/- 193 dyn*sec*cm-5; (KHRBC): 279 +/- 48 dyn*sec*cm-5; PIP (KH): 31 +/- 3.2 mm Hg; (KHRBC): 25.8 +/- 1.9 mm Hg). In addition, lungs perfused with KHRBC showed significantly less edema than those perfused with KH only (W/D ratio (KH): 7.8 +/- 1.2; (KHRBC) 5.1 +/- 0.6; LM (KH): 3.5 +/- 0.9; (KHRBC): 2.3 +/- 0.8). The use of red blood cells in KH perfusate improved functional and structural integrity.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7643600

Fukuse, T; Albes, J M; Takahashi, Y; Brandes, H; Hausen, B; Schäfers, H J

1995-09-01

59

Development of a reflected optical fiber system for measuring oxygen saturation in an integrated artificial heart-lung system.  

PubMed

The purpose of this study was to develop a blood oxygen saturation (OS) monitoring system for use with an integrated artificial heart-lung system (IAHLS). The OS monitoring system consists of two paired optical fiber probes (OFPs) and a measurement system. To investigate the effect of the OFP configuration and incident light wavelength on the relationship between OS and the reflectance ratio for wavelengths of 810 and 645 nm, we performed theoretical analyses of the relationship between OS and R810/R645 using a diffusion equation. The prototype OFP located on the blood outlet port of our IAHLS housing was evaluated using an in vitro test. An OS range of 65-100% was adjusted to supply oxygen and nitrogen gas to the IAHLS. The blood flow rate was maintained at 3 L/min by the rotational speed of an impeller in the IAHLS. The OS-corrected blood from the IAHLS was measured using a commercial gas analyzer. The correlation coefficients (r(2)) between the theoretical ratio of R810/R645 and OS, and between measured OS and the reflectance ratio of R810/R645 were 0.97 and 0.78, respectively. In conclusion, we confirmed that the development of this oximetry system is applicable for IAHLS. PMID:18201289

Yasuda, Toshitaka; Saito, Tomohiko; Kihara, Tatsuya; Takatani, Setsuo; Funakubo, Akio

2008-01-15

60

Severe Asthma in Children: Insights from the National Heart, Lung, and Blood Institute's Severe Asthma Research Program  

PubMed Central

Severe asthma in children is a complicated disorder characterized by ongoing symptoms and persistent airway inflammation despite treatment with high doses of inhaled and oral corticosteroids. Although knowledge of asthma and its associated mechanisms has increased substantially over the past decade, significant gaps remain about the determinants of severe asthma in children and the progression of the disorder across the lifespan. This review highlights recent insights into severe asthma in children derived from the National Heart, Lung, and Blood Institute's Severe Asthma Research Program (SARP), with an emphasis on age-specific findings and differences from severe asthma in adults. While the existence of a true severe asthma phenotype in children is subject to some debate, given the results of SARP and other investigators, we conclude that there is indeed a subgroup of children with severe asthma who have extreme morbidity and differentiating clinical features that are identifiable very early in life. However, unlike adults with severe asthma, children with severe asthma are more likely to fall in a more narrow cluster that is characterized by marked atopy and reversible airflow obstruction. While SARP has advanced knowledge of severe asthma in children, considerable gaps remain for which additional studies are needed.

Fitzpatrick, Anne M.

2010-01-01

61

Chocolate Consumption is Inversely Associated with Prevalent Coronary Heart Disease: The National Heart, Lung, and Blood Institute Family Heart Study  

PubMed Central

Background and Aims Epidemiologic studies have suggested beneficial effects of flavonoids on cardiovascular disease. Cocoa and particularly dark chocolate are rich in flavonoids and recent studies have demonstrated blood pressure lowering effects of dark chocolate. However, limited data are available on the association of chocolate consumption and the risk of coronary heart disease (CHD). We sought to examine the association between chocolate consumption and prevalent CHD. Methods We studied in a cross-sectional design 4,970 participants aged 25 to 93 years who participated in the National Heart, Lung, and Blood Institute (NHLBI) Family Heart Study. Chocolate intake was assessed through a semi-quantitative food frequency questionnaire. We used generalized estimating equations to estimate adjusted odds ratios. Results Compared to subjects who did not report any chocolate intake, odds ratios (95% CI) for CHD were 1.01 (0.76-1.37), 0.74 (0.56-0.98), and 0.43 (0.28-0.67) for subjects consuming 1-3 times/month, 1-4 times/week, and 5+ times/week, respectively (p for trend <0.0001) adjusting for age, sex, family CHD risk group, energy intake, education, non-chocolate candy intake, linolenic acid intake, smoking, alcohol intake, exercise, and fruit and vegetables. Consumption of non-chocolate candy was associated with a 49% higher prevalence of CHD comparing 5+/week vs. 0/week [OR=1.49 (0.96-2.32)]. Conclusions These data suggest that consumption of chocolate is inversely related with prevalent CHD in a general population.

Djousse, Luc; Hopkins, Paul N.; North, Kari E.; Pankow, James S.; Arnett, Donna K.; Ellison, R. Curtis

2010-01-01

62

Racial Differences in the Sums of Skinfolds and Percentage of Body Fat Estimated from Impedance in Black and White Girls, 9 to 19 Years of Age: The National Heart, Lung, and Blood Institute Growth and Health Study  

Microsoft Academic Search

Objectives: This National Heart, Lung, and Blood Institute Growth and Health Study report assesses racial differences in fat patterning in black and white girls ages 9 to 19 years, comparing the sum of triceps and subscapular skinfolds (SSFs) and percentage of body fat (%BF) from impedance as two indices of adiposity. It is hypothesized that racial differences in fat patterning

John A. Morrison; Bruce A. Barton; Eva Obarzanek; Patricia B. Crawford; Shumei S. Guo; George B. Schreiber

2001-01-01

63

Pantoea agglomerans pneumonia in a heart-lung transplant recipient: case report and a review of an emerging pathogen in immunocompromised hosts.  

PubMed

Pantoea agglomerans is a gram-negative rod that is frequently found on the exterior of many plants, fruits, vegetables, and in soil, and it is used as a biopesticide in the agriculture industry. Recent reports have implicated P. agglomerans in systemic infections of immunocompromised hosts and neonates, as well as more localized infections in healthy hosts. P. agglomerans as a cause of hospital-acquired pneumonia has not been well characterized. We report a case of P. agglomerans pneumonia in a heart-lung transplant recipient following transplantation. The organism was susceptible to multiple antimicrobial agents and treated successfully with ertapenem. We review the patient's course and the relevant literature, and discuss implications for the future. PMID:21504526

Shubov, A; Jagannathan, P; Chin-Hong, P V

2011-04-19

64

Design progress of the ultracompact integrated heart lung assist device--part 1: effect of vaned diffusers on gas-transfer performances.  

PubMed

The integrated heart lung assist device (IHLAD) has been developed to overcome the problems of currently available extracorporeal membrane oxygenation devices. The integrated structure of a centrifugal blood pump and cylindrical bundle of polyolefin hollow-fibers has allowed a remarkably compact size for the device. This study deals with the design change of the IHLAD that added to the vaned diffuser between the impeller of the centrifugal pump and the hollow-fiber bundle with a view to enhancing the gas-transfer performance. Ex vivo gas-transfer performance tests were carried out, as well as hydrodynamic characteristics and hemolysis test using fresh goat blood. The oxygen transfer rate was generally improved, and the carbon dioxide removal rate was slightly improved. Intolerable amount of hemolysis (index of hemolysis= 0.177) was caused by the IHLAD, which must be resolved by improving the design in the future. PMID:14616534

Tsukiya, Tomonori; Tatsumi, Eisuke; Nishinaka, Tomohiro; Katagiri, Nobumasa; Takewa, Yoshiaki; Ohnishi, Hiroyuki; Oshikawa, Mitsuo; Shioya, Kyoko; Mizuno, Toshihide; Taenaka, Yoshiyuki; Takano, Hisateru; Kitamura, Soichiro

2003-10-01

65

Ethical and practical guidelines for reporting genetic research results to study participants: updated guidelines from a National Heart, Lung, and Blood Institute working group.  

PubMed

In January 2009, the National Heart, Lung, and Blood Institute convened a 28-member multidisciplinary Working Group to update the recommendations of a 2004 National Heart, Lung, and Blood Institute Working Group focused on Guidelines to the Return of Genetic Research Results. Changes in the genetic and societal landscape over the intervening 5 years raise multiple questions and challenges. The group noted the complex issues arising from the fact that technological and bioinformatic progress has made it possible to obtain considerable information on individuals that would not have been possible a decade ago. Although unable to reach consensus on a number of issues, the working group produced 5 recommendations. The working group offers 2 recommendations addressing the criteria necessary to determine when genetic results should and may be returned to study participants, respectively. In addition, it suggests that a time limit be established to limit the duration of obligation of investigators to return genetic research results. The group recommends the creation of a central body, or bodies, to provide guidance on when genetic research results are associated with sufficient risk and have established clinical utility to justify their return to study participants. The final recommendation urges investigators to engage the broader community when dealing with identifiable communities to advise them on the return of aggregate and individual research results. Creation of an entity charged to provide guidance to institutional review boards, investigators, research institutions, and research sponsors would provide rigorous review of available data, promote standardization of study policies regarding return of genetic research results, and enable investigators and study participants to clarify and share expectations for the handling of this increasingly valuable information with appropriate respect for the rights and needs of participants. PMID:21156933

Fabsitz, Richard R; McGuire, Amy; Sharp, Richard R; Puggal, Mona; Beskow, Laura M; Biesecker, Leslie G; Bookman, Ebony; Burke, Wylie; Burchard, Esteban Gonzalez; Church, George; Clayton, Ellen Wright; Eckfeldt, John H; Fernandez, Conrad V; Fisher, Rebecca; Fullerton, Stephanie M; Gabriel, Stacey; Gachupin, Francine; James, Cynthia; Jarvik, Gail P; Kittles, Rick; Leib, Jennifer R; O'Donnell, Christopher; O'Rourke, P Pearl; Rodriguez, Laura Lyman; Schully, Sheri D; Shuldiner, Alan R; Sze, Rebecca K F; Thakuria, Joseph V; Wolf, Susan M; Burke, Gregory L

2010-12-01

66

Simple Machines  

NSDL National Science Digital Library

This activity is designed to learn about simple machines and to have fun doing so! First, use this website to learn backround information on the basics of simple machines. Try the quiz! Simple Machines Learning Site Next, play a game that tests your ability to identify simple machines.... Edheads: Simple Machines Finally, view this video to see how students your age used applied simple machines to do a cool task... Building Simple Machines: A Glass of Milk, Please ...

Awol

2006-11-15

67

Heart Surgery Overview  

MedlinePLUS

... medicine made heart surgery possible: The heart-lung machine, which takes over the work of the heart. ... causing brain damage. What is a heart-lung machine? Perfusion technologists operate the heart-lung machine during ...

68

Introspective Machine.  

National Technical Information Service (NTIS)

An introspective machine, capable of passing judgment on its own deductive performances, is modelled and analyzed. First, the class of ideal machines which is provided with unlimited resources is studied. Since ideal introspective machines are usually unf...

G. A. W. Vreeswijk

1989-01-01

69

Machine Shop Grinding Machines.  

ERIC Educational Resources Information Center

|This curriculum manual is one in a series of machine shop curriculum manuals intended for use in full-time secondary and postsecondary classes, as well as part-time adult classes. The curriculum can also be adapted to open-entry, open-exit programs. Its purpose is to equip students with basic knowledge and skills that will enable them to enter…

Dunn, James

70

Machine Shop Grinding Machines.  

ERIC Educational Resources Information Center

This curriculum manual is one in a series of machine shop curriculum manuals intended for use in full-time secondary and postsecondary classes, as well as part-time adult classes. The curriculum can also be adapted to open-entry, open-exit programs. Its purpose is to equip students with basic knowledge and skills that will enable them to enter the…

Dunn, James

71

Machine Learning  

Microsoft Academic Search

Machine learning is a very active sub-field of artificial intelligence concerned with the development of computational models\\u000a of learning. Machine learning is inspired by the work in several disciplines: cognitive sciences, computer science, statistics,\\u000a computational complexity, information theory, control theory, philosophy, and biology. Simply speaking, machine learning is\\u000a learning by machine. From a computational point of view, machine learning refers

Xin Yao; Yong Liu

72

Simple Machines  

NSDL National Science Digital Library

At this website, EdHeads, a nonprofit, offers five interactive, animated modules to educate second- through sixth-graders about simple machines. By identifying the many machines located throughout a house, students can learn about fulcrums, wheel and axles, levers, pulleys, inclined planes, and much more. The website is equipped with simple animations to help children understand how the machines work. After students have a handle on simple machines, they can begin to see how they work together to create compound machines. The website also provides a brief glossary summarizing nine types of simple machines. This site is also reviewed in the February 18, 2005_NSDL Physical Sciences Report_.

73

von Willebrand disease (VWD): evidence-based diagnosis and management guidelines, the National Heart, Lung, and Blood Institute (NHLBI) Expert Panel report (USA).  

PubMed

von Willebrand disease (VWD) is a commonly encountered inherited bleeding disorder affecting both males and females, causing mucous membrane and skin bleeding symptoms, and bleeding with surgical or other haemostatic challenges. VWD may be disproportionately symptomatic in women of child-bearing age. It may also occur less frequently as an acquired disorder (acquired von Willebrand syndrome). VWD is caused by deficiency or dysfunction of von Willebrand factor (VWF), a plasma protein that mediates platelet haemostatic function and stabilizes blood coagulation factor VIII. The pathophysiology, classification, diagnosis and management of VWD are relatively complex, but understanding them is important for proper diagnosis and management of patients with VWD. These evidence-based guidelines for diagnosis and management of VWD from the National Heart, Lung, and Blood Institute (NHLBI) Expert Panel (USA) review relevant publications, summarize current understanding of VWD pathophysiology and classification, and present consensus diagnostic and management recommendations based on analysis of the literature and expert opinion. They also suggest an approach for clinical and laboratory evaluation of individuals with bleeding symptoms, history of bleeding or conditions associated with increased bleeding risk. This document summarizes needs for further research in VWF, VWD and bleeding disorders, including clinical research to obtain more objective information about bleeding symptoms, advancements in diagnostic and therapeutic tools, and enhancement in the education and training of clinicians and scientists in bleeding and thrombotic disorders. The NHLBI Web site (http://www.nhlbi.nih.gov/guidelines/vwd) has a more detailed document, a synopsis of these recommendations, and patient education information. PMID:18315614

Nichols, W L; Hultin, M B; James, A H; Manco-Johnson, M J; Montgomery, R R; Ortel, T L; Rick, M E; Sadler, J E; Weinstein, M; Yawn, B P

2008-03-01

74

SIMPLE MACHINES  

NSDL National Science Digital Library

You will be learning about several types of simple machines. Have fun!! Review the first website (which is right here!! Simple machines) . It has information about simple machines. DON\\"T click until you read all directions!!! Prepare to discuss each type in class. You will need to take some basic notes about each machine, using a bubble-map format. Don\\'t forget ...

Machose, Mrs.

2007-03-10

75

State Machines  

Microsoft Academic Search

We are surrounded by real-world state machines: ballpoint pen retractor mechanisms, vending machines, washing-machine controllers, digital watches. They are a trivial but underused technology that can simplify how we implement programs that must track how they got to their current state before handling a new event. However, many programmers feel that state machines are only useful when they're developing communication

Dave Thomas; Andy Hunt

2002-01-01

76

Kid Machine  

NSDL National Science Digital Library

This activity is on page 3 (continued on page 2) of the pdf, part of the Simple Machines Discovery Box. In this fun activity, learners "create" a complex machine by simulating the parts in action. Learners move their bodies and make sounds as if they are individual parts of a moving machine. Then learners discover what happens when part of a machine is broken and problem solve ways to fix it.

Omsi

2004-01-01

77

Simple Machines  

NSDL National Science Digital Library

This is an online activity about simple machines. Learners will try their hand at putting these amazing devices to work. They will use several simple machines to help "build" a tree house. This is an excellent activity to demonstrate how science - in particular, simple machines - are at work in our every day lives.

Cosi

2000-01-01

78

Electrostatic Machines  

NSDL National Science Digital Library

This website from Antonio Carlos M. De Queiroz, an associate professor at the Federal University of Rio de Janeiro, illustrates a number of different electrostatic machines. The site includes details and images of machines built by the professor as well as many other historical machines of this type. Some information is also available in Portugese.

De Queiroz, Antonio C.

2011-07-13

79

Graphical analysis of drug effects in the dog heart-lung preparation--with particular reference to the pulmonary circulation and effects of norepinephrine and 5-hydroxytryptamine.  

PubMed

Our new method for the graphical analysis of drug effects in the dog heart-lung preparation was extended to pulmonary circulation. The equilibrium points, at which the cardiac output (CO) curve and venous return (VR) curve cross each other in the right atrial pressure (RAP)-CO and left atrial pressure (LAP)-CO relations, were directly recorded on two X-Y recorders. The VR curves were obtained by inducing cardiac fibrillation and simultaneously occluding the pulmonary arterial trunk. The competence test, which was utilized previously for recording the CO curve in the RAP-CO relation (Ishikawa et al., 1978), was confirmed to be a good procedure for the CO curve in the LAP-CO relation. During the competence test, the mean pulmonary pressure (Pmp) which is the intercept of the pulmonary VR curve on the LAP axis in the LAP-CO relation was changed as much as the change in the systemic reservoir blood level, with little change in the slope of the pulmonary VR curve. When the reservoir blood level was 100 mm above the superior vena cava and the aortic pressure was 70 mmHg (control), the Pmp value was 136 +/- 7 mmH2O (n = 24). The slope of the pulmonary VR curve was not so different from that of the systemic VR curve in RAP-CO relation. Raising aortic pressure to 100 mmHg caused a shift of the equilibrium point to the right and slightly downwards, increased the Pmp value by 42.9 +/- 9.9 mmH2O (delta Pmp) and decreased the reservoir blood volume by 26.2 +/- 6.4 ml (delta V). The ratio delta V/delta Pmp was 0.66 +/- 0.11 ml/mmH2O. The continuous infusion of norepinephrine 4 micrograms/min caused a shift of the equilibrium point to the left and upwards, decreased the Pmp value by 67.1 +/- 19.1 mmH2O and increased the reservoir blood volume by 35.3 +/- 7.2 ml. The ratio delta V/delta Pmp was 0.56 +/- 0.16 ml/mmH2O. The continuous infusion of 5-hydroxytryptamine at the rate of 60 micrograms/min caused a shift of the equilibrium point almost vertically and downwards, increased Pmp value by 34.8 +/- 3.2 mmH2O and decreased the reservoir blood volume by 45.8 +/- 10.1 ml. The ratio delta V/delta Pmp was 0.88 +/- 0.10 ml/mmH2O. PMID:6632379

Ishikawa, N; Taki, K; Hojo, Y; Hagino, Y; Shigei, T

1983-08-01

80

Kicking Machine  

NSDL National Science Digital Library

In this design challenge activity, learners build a machine that kicks a Ping-Pong ball into a cup lying on its side 12 inches away. Learners use a pendulum, a rubber band, or a combination of the two to do this and test the accuracy of their machines by shooting a Ping-Pong ball into a cup. Educators can use this activity to demonstrate simple machines and kinetic/potential energy. This activity can be followed up with "Extreme Kicking Machine" which adds an even greater challenge into the mix.

Wgbh

2010-01-01

81

Machine intelligence  

Microsoft Academic Search

Under certain conditions, we appear willing to see and interact with computing machines as though they exhibited intelligence, at least an intelligence of sorts. Using exam- ples from AI and robotics research, as well as a selection of relevant art installations and anthropological fieldwork, this paper reflects on some of our interactions with the kinds of machines we seem ready

Alex S. Taylor

2009-01-01

82

Woodworking Machines.  

National Technical Information Service (NTIS)

Woodworking machines are made to do a wide variety of jobs. For any one job there are usually a number of makes, sizes, and styles of machines from which to choose. They are not standardized. Only a brief classification and outline of specifications for f...

1964-01-01

83

Excavating machines  

SciTech Connect

The excavating machine has a cutter carrying boom carried by a boom support member which can be swung about an axis extending in the direction of the roadway. The machine includes a cutter unit and a stay unit each of which is releasably anchorable in the roadway and each of which can be advanced relative to the other unit.

Plummer, D.

1980-10-21

84

Machine Learning.  

ERIC Educational Resources Information Center

|As scientists seek to develop machines that can "learn," that is, solve problems by imitating the human brain, a gold mine of information on the processes of human learning is being discovered, expert systems are being improved, and human-machine interactions are being enhanced. (SK)|

Kirrane, Diane E.

1990-01-01

85

Calculating machines  

NSDL National Science Digital Library

This website created by Erez Kaplan "deals mainly with the mechanical calculating machines from a collector's point of view." Included here is an historical review of calculating machines, along with Kaplan's attempt to classify the machines, a collection of old advertisements for the machines, and a brief history of calculating. The latest feature is a Java applet that lets you operate an 1885 Felt adding machine to give you a sense of the way it was used. The photos and descriptions provide insight on other gadgets such as the Pocket Cash Registers used by "the sophisticated man or woman of 1900 who had everything." The Reference section provides some resources for further reading, including numerous other personal calculator collectors sites and museums.

86

Scribbling Machines  

NSDL National Science Digital Library

In this activity, learners explore electronics and motion by making a Scribbling Machine, a motorized contraption that moves in unusual ways and leaves a mark to trace its path. Itâs made from simple materials and is based on the idea of motion created by an offset motor. Try using harvested motors and switches from discarded toys and electronics to make your Scribbling Machine - this not only keeps costs down, but is a playful and inventive way to explore how everyday objects work. To take the activity further, you can also incorporate PicoCrickets to make your Scribbling Machine more intelligent and to explore computers.

Exploratorium

2013-01-30

87

Math Machines  

NSDL National Science Digital Library

The mission of the Math Machines organization is to "improve the quality of mathematical education, enhance the transfer of mathematical thinking into other classes, and increase students' ability to apply rigorous mathematics outside the classroom." Their website supports a National Science Foundation ATE grant-supported project designed to improve teaching in the areas of Mathematics, Science, and Technology at the high school and college levels. This improved learning results from using math, science, and technology principles to build and control various machines such as pointers and robots or "math machines", which are simple devices that provide an immediate, physical, dynamic expression to abstract mathematical equations. The website provides information links on Educational Theory, Classroom Activities, Project Workshops, Calculators & Programs, and Machine Construction Instructions for Building: Closed Circuits, Servo Motors, Controllers, Robot Boards and more. There is also contact information, an FAQ section, as well as upcoming events.

2010-05-18

88

Pipetting Machine.  

National Technical Information Service (NTIS)

The pipetting machine is for use in a laboratory of physiology for the handling of serums. The apparatus includes a syringe and a valve portion constituting a variable stroke positive displacement pump and components for selecting a predetermined stroke t...

C. R. Mencken

1965-01-01

89

Simple Machines  

NSDL National Science Digital Library

This series of three interactive, multimedia activities introduce and demonstrate the properties of six simple machines. Specifically, the lessons show how levers, pulleys, inclined planes, screws, wheels and axles, and wedges can reduce the amount of work done by humans. After learning about the characteristics of each classification, users can try to find the simple machines that make up a lawn mower. By inspecting the mower from different angles, several simple machines are revealed and must be identified. The final activity lets users test their knowledge of the mechanics of simple machines. Following a builder through each stage of constructing a tree house, users can apply equations to determine the mechanical advantage supplied by using the tools.

90

Logistics Machining Data.  

National Technical Information Service (NTIS)

Contents: Machining operations; tool geometry; cutting fluids; electrical, chemical, special mechanical and optical machining processes; supplemental machining data and information; economics in machining; instructions in machining; surface finish; numeri...

1966-01-01

91

Culture Machine  

NSDL National Science Digital Library

Culture Machine is a new, refereed, electronic journal encompassing cultural studies and cultural theory. The international editorial board of the interactive journal aims to "generat[e] research in culture and theory" by promoting and publishing "the most provocative of new work." The theme of the inaugural issue is Taking Risks with the Future. Content includes articles such as Life After Death of the Text by Johan Fornas, Cultural Studies in the Clouds: Mourning for Detail by Tadeusz Slawek, and The Future States of Politics by Kenneth Surin. Culture Machine is hosted by the University of Teesside, England.

92

Leonardo's Machines  

NSDL National Science Digital Library

This Science NetLinks lesson will highlight some of Leonardo da Vinci's futuristic inventions, introducing the elements of machines. Through the use of student interactives, this lesson provides an interesting context in which students can begin to develop their ideas about the uniqueness of humans in the natural world.

Science Netlinks;

2003-03-05

93

Function Machine  

NSDL National Science Digital Library

This Java applet allows learners to explore simple linear functions. Students determine the algebraic form of a linear equation by entering inputs into the machine and by looking for patterns in the outputs. The function rules available are: integers from -10 to 10 are either added to, subtracted from, or multiplied by the input x to yield the output y.

2011-01-01

94

Mining machine  

Microsoft Academic Search

A mining machine is disclosed in which a cutting drum undercuts a vein of coal and side relief cutters make vertical kerfs in the vein upwardly from the undercut. A chisel plate is forced into the coal vein and breaks loose the material above the undercut and between the side relief cuts. The coal falls into conveyors and is loaded

Mendola

1981-01-01

95

Decoding Machine  

NSDL National Science Digital Library

In this math lesson, learners explore variables and their uses. Learners pretend to be FBI agents and make a TOP SECRET tool that enables them to decode and find the values of hidden messages and words. Learners make their simple "decoding machines" out of paper and tape.

Lessonplans, Utah

2012-10-22

96

Laugh Machine  

Microsoft Academic Search

The Laugh Machine project aims at endowing virtual agents with the capability to laugh naturally, at the right moment and with the correct intensity, when interacting with human participants. In this report we present the technical development and evaluation of such an agent in one specific scenario: watching TV along with a participant. The agent must be able to react

Jrme Urbain; Radoslaw Niewiadomski; Jennifer Hofmann; Emeline Bantegnie; Tobias Baur; Nadia Berthouze; Hseyin Cakmak; Richard Thomas Cruz; Stphane Dupont; Matthieu Geist; Harry Griffin; Florian Lingenfelser; Maurizio Mancini; Miguel Miranda; Gary McKeown; Sathish Pammi; Olivier Pietquin; Bilal Piot; Tracey Platt; Willibald Ruch; Abhishek Sharma; Gualtiero Volpe; Johannes Wagner

2012-01-01

97

Wacky Machines  

ERIC Educational Resources Information Center

Collectors everywhere know that local antique shops and flea markets are treasure troves just waiting to be plundered. Science teachers might take a hint from these hobbyists, for the next community yard sale might be a repository of old, quirky items that are just the things to get students thinking about simple machines. By introducing some…

Fendrich, Jean

2002-01-01

98

Addition Machines.  

National Technical Information Service (NTIS)

An addition machine is a computing device with a finite number of registers, limited to the following six types of operations: input to register x; copy register y to register x; add register y to register x; subtract register y from register x; compare r...

R. W. Floyd D. E. Knuth

1989-01-01

99

Drilling Machines: Vocational Machine Shop.  

ERIC Educational Resources Information Center

|The lessons and supportive information in this field tested instructional block provide a guide for teachers in developing a machine shop course of study in drilling. The document is comprised of operation sheets, information sheets, and transparency masters for 23 lessons. Each lesson plan includes a performance objective, material and tools,…

Thomas, John C.

100

Simple Machines  

NSDL National Science Digital Library

The goals for this introduction activity to Simple Machines are.: - Generate scientific questions about the world based on observation - Design and conduct scientific investigations - Use tools and equipment appropriate to scientific investigations - Use sources of information in support of scientific investigation - Write and follow procedures in the form of step-by-step instructions, formulas, flow diagram, and sketches - Show how common themes of science, mathematics, and technology apply in real-world contexts - Recognize the contributions made in science by cultures and individuals of diverse backgrounds - Design strategies for moving objects by application of forces, including the use of simple machines MERC Online Reviewer Comments: Good computer activities for under-represented students who want to pursue manufacturing education. Distance Learning is a plus.

Wakild, Terri

2009-11-30

101

Charging machine  

DOEpatents

A charging machine for loading fuel slugs into the process tubes of a nuclear reactor includes a tubular housing connected to the process tube, a charging trough connected to the other end of the tubular housing, a device for loading the charging trough with a group of fuel slugs, means for equalizing the coolant pressure in the charging trough with the pressure in the process tubes, means for pushing the group of fuel slugs into the process tube and a latch and a seal engaging the last object in the group of fuel slugs to prevent the fuel slugs from being ejected from the process tube when the pusher is removed and to prevent pressure liquid from entering the charging machine.

Medlin, John B. (Newark, DE)

1976-05-25

102

Voting machine  

US Patent & Trademark Office Database

A compact, versatile voting machine is disclosed having adaptability for use with various vote registering devices such as tally counters and punch card apparatus. The voting machine includes a selector mechanism having a series of parallel columns housing voter operated key slides. A vertical interlock mechanism includes ball housing blocks which are alternately disposed between the key slides and house displaceable interlock balls in a tool line. The cam blocks are adjustable to limit the effective length of the tool line to establish groupings of candidates from which a single selection can be made. A magazine at the top of each column is adjustable to permit multiple selections from a grouping. Actuation of a key cams the interlock balls into the tool line, and when a predetermined number of voter selections have been made no additional keys can be actuated as they are blocked by the tool line. A row of adjacent horizontal keys can also be interlocked to established selection groups as typically found on a general election ballot. A bar is moveable to horizontally interlock adjacent columns by introducing locking pins into a position to be cammed by actuation of a key. A drive mechanism associated with each column permits the voter to vote straight party and clears the machine to ready it for another voter. The drive mechanism includes cam controlled clutches that operate four-bar linkage elements to depress or return the key slides. A judge controlled mechanism locks the machine between voters. For various voting requirements, judge operated cam arrangements are cooperable with the horizontal locking pins and the four-bar linkage to selectively lock out partial or entire columns or rows of key slides. The key slides are provided with a voter viewable button that registers a visible, luminescent X when a key is voted.

O'Neal; Cothburn M. (Dallas, TX); Mayo; Alfred M. (Richardson, TX); Childs, deceased; George William (LATE OF DTX, TX)

1976-01-27

103

Induction machine  

SciTech Connect

A polyphase rotary induction machine for use as a motor or generator utilizes, a single rotor assembly having two series connected sets of rotor windings, a first stator winding disposed around the first rotor winding and means for controlling the current induced in one set of the rotor windings compared to the current induced in the other set of the rotor windings. The rotor windings may be wound rotor windings or squirrel cage windings.

Owen, W.H.

1980-10-14

104

Induction machine  

DOEpatents

A polyphase rotary induction machine for use as a motor or generator utilizing a single rotor assembly having two series connected sets of rotor windings, a first stator winding disposed around the first rotor winding and means for controlling the current induced in one set of the rotor windings compared to the current induced in the other set of the rotor windings. The rotor windings may be wound rotor windings or squirrel cage windings.

Owen, Whitney H. (Ogden, UT)

1980-01-01

105

Machine vision  

SciTech Connect

To keep up with the speeds of modern production lines, most machine vision applications require very powerful computers (often parallel-processing machines), which process millions of points of data in real time. The human brain performs approximately 100 billion logical floating-point operations each second. That is 400 times the speed of a Cray-1 supercomputer. The right software must be developed for parallel-processing computers. The NSF has awarded Rensselaer Polytechnic Institute (Troy, N.Y.) a $2 million grant for parallel- and image-processing software research. Over the last 15 years, Rensselaer has been conducting image-processing research, including work with high-definition TV (HDTV) and image coding and understanding. A similar NSF grant has been awarded to Michigan State University (East Lansing, Mich.) Neural networks are supposed to emulate human learning patterns. These networks and their hardware implementations (neurocomputers) show a great deal of promise for machine vision systems because they allow the systems to understand the use sensory data input more effectively. Neurocomputers excel at pattern-recognition tasks when input data are fuzzy or the vision algorithm is not optimal and is difficult to ascertain.

Horn, D.

1989-06-01

106

Machine Design  

NSDL National Science Digital Library

This website, the homepage of Machine Design.com, contains resources on a variety of information for engineers and technicians related to devices, components, design applications, products, and systems in the manufacturing technology sector. The site also features a CAD library, eBooks, audiovisual aids, webinars, whitepapers and a reference center. Some of the resources require a free login. The page offers an RSS feed to keep users up to date on new resources. A free login may be required to access some of these items.

2009-11-09

107

Learning about Simple Machines  

NSDL National Science Digital Library

This activity is designed to learn about simple machines and to have fun doing so! First, use this website to learn backround information on the basics of simple machines. Try the quiz! Simple Machines Learning Site Next, play a game that tests your ability to identify simple machines.... Edheads: Simple Machines Finally, view this video to see how students your age used applied simple machines to do a cool task... Building Simple Machines: A Glass of Milk, Please ...

Keller, Mrs.

2010-01-17

108

Multifunctional machine tool  

Microsoft Academic Search

The functions of metal cutting machine tools have been increasing to meet the demands of high productivity and high accuracy in machining complicated and difficult parts on one machine. This paper presents a comprehensive survey of multi-functional machine tools used for metal cutting, and their kinematic configurations, control and programming technologies. Design principles and assessment of multi-functional machine tools are

T. Moriwaki

2008-01-01

109

Inherited arrhythmias: a National Heart, Lung, and Blood Institute and Office of Rare Diseases workshop consensus report about the diagnosis, phenotyping, molecular mechanisms, and therapeutic approaches for primary cardiomyopathies of gene mutations affecting ion channel function.  

PubMed

The National Heart, Lung, and Blood Institute and Office of Rare Diseases at the National Institutes of Health organized a workshop (September 14 to 15, 2006, in Bethesda, Md) to advise on new research directions needed for improved identification and treatment of rare inherited arrhythmias. These included the following: (1) Na+ channelopathies; (2) arrhythmias due to K+ channel mutations; and (3) arrhythmias due to other inherited arrhythmogenic mechanisms. Another major goal was to provide recommendations to support, enable, or facilitate research to improve future diagnosis and management of inherited arrhythmias. Classifications of electric heart diseases have proved to be exceedingly complex and in many respects contradictory. A new contemporary and rigorous classification of arrhythmogenic cardiomyopathies is proposed. This consensus report provides an important framework and overview to this increasingly heterogeneous group of primary cardiac membrane channel diseases. Of particular note, the present classification scheme recognizes the rapid evolution of molecular biology and novel therapeutic approaches in cardiology, as well as the introduction of many recently described diseases, and is unique in that it incorporates ion channelopathies as a primary cardiomyopathy in consensus with a recent American Heart Association Scientific Statement. PMID:17998470

Lehnart, Stephan E; Ackerman, Michael J; Benson, D Woodrow; Brugada, Ramon; Clancy, Colleen E; Donahue, J Kevin; George, Alfred L; Grant, Augustus O; Groft, Stephen C; January, Craig T; Lathrop, David A; Lederer, W Jonathan; Makielski, Jonathan C; Mohler, Peter J; Moss, Arthur; Nerbonne, Jeanne M; Olson, Timothy M; Przywara, Dennis A; Towbin, Jeffrey A; Wang, Lan-Hsiang; Marks, Andrew R

2007-11-13

110

Reviving the vascular surgeon-scientist: an interim assessment of the jointly sponsored Lifeline Foundation/National Heart, Lung, and Blood Institute William J. von Liebig Mentored Clinical Scientist Development (K08) Program.  

PubMed

The Lifeline Foundation/National Heart, Lung, and Blood Institute William J. von Liebig Mentored Clinical Scientist Development (K08) Award program was established as a unique partnership to support vascular surgeon-scientists. Between 1999 and 2005, 39 applications were submitted, and the overall funding rate was 49% (14 von Liebig K08s and 5 additional NHLBI K08s). Vascular surgeon K08 recipients (median age, 38 years) had held faculty appointments for 2.5 +/- 0.4 years, with 2.6 +/- 0.2 years of previous research experience and 28.4 +/- 6.2 publications. These individuals subsequently authored 5.1 +/- 0.8 peer-reviewed publications per recipient per year, of which 35% were research and 65% were clinical. Six of seven holding the K08 over 3 years had received academic promotion, and all five completing the 5-year award had achieved independent investigator status with National Institutes of Health support. The von Liebig K08 program has therefore been an effective vehicle to stimulate research career development in the field of vascular surgery. PMID:17544018

Thompson, Robert W; Schucker, Beth; Kent, K Craig; Clowes, Alexander W; Kraiss, Larry W; Mannick, John A; Yao, James S T

2007-06-01

111

Mining machine  

SciTech Connect

A mining machine is disclosed comprising a mobile base and a cutting head assembly at a forward end of the mobile base having a cutter drum rotatable about an output shaft disposed along the longitudinal axis of the cutter drum. A drive system for the cutting head assembly comprises at least one motor for driving at least one toothed motor pinion and a generally cylindrical combination gear having generally circular end surfaces. A bevel or face gear is formed in at least one of the end surfaces, having teeth adapted to mate with and be driven by the toothed motor pinion. The combination gear has a worm gear formed in the outside cylindrical surface, which is disposed in driving engagement with the teeth of an output gear integrally and coaxially connected to the output shaft of the cutter drum.

Becker, H.R.

1984-12-04

112

Simple Machines - Mechanical Advantage  

NSDL National Science Digital Library

This video uses working simple machines to demonstrate how to calculate mechanical advantage. Suitable for any school program involving simple machines. Demonstrates pulley systems including a chain block.

2007-01-01

113

Parallel machines scheduling with machine shutdowns  

Microsoft Academic Search

We study the nonpreemptive parallel machines scheduling problem where some of the machines are planned to be shutdown. We apply LPT algorithm to the problem and analyze its performance. Our analysis shows that the makespan of the LPT schedule is bounded by twice the optimum makespan if no more than half of the machines are allowed to be shutdown simultaneously.

H.-C. Hwang; S. Y. Chang

1998-01-01

114

DC Machine  

NSDL National Science Digital Library

The effect of the commutator is to produce a fixed spatial distribution of current directions in the armature conductors (shown as blue & green circles) independent of shaft rotation. The field created by these currents (armature reaction) is vertically directed along the quadrature axis. The field established by the excitation of the stator poles is directed along the horizontal direct axis. This package presents computer models of electric machines based on the space vector formulation leading to the assessment of the dynamic performance of open- and closed-loopac and dc drive systems. The Simulink/Matlab implementation is adopted because of its inherent integration of vectorized system representations in block diagram form, of numerical analysis methods, of graphical portrayal of time evolutions of signals combined with the simple realization of the functionality of controllers and power electronic excitations. The development of Simulink models of drive assemblies is a relatively simple task consisting of combining input-output block representation of the various components making up the system; these blocks can readily be reused (utilizing standard copy-and-paste techniques) to modify the system components or the configuration of the system. This approach provides a powerful design tool because of the ease of observing the effects of parameters modifications and of differing system configurations and control strategies.

Riaz, Mahmoud

2012-08-29

115

Flotation machine  

SciTech Connect

A flotation machine is described for beneficiating minerals comprising: a vertical cylindrical chamber for circulating a flotation pulp; a downwardly tapered bottom connected to said vertical cylindrical chamber; feed pipe means for feeding the flotation pulp carrying mineral particles of fine fraction, particles of the useful ingredient of the fine fraction being capable of floating up from the volume of said aerated pulp; discharge pipe means connected to the tapered bottom near its lowest point for discharging gangue; an annular trough for collecting froth concentrate at the top of said chamber; a group of frustoconical shells each having bases of different diameters and a tapered surface secured axially in said chamber and spaced equidistantly from one another height wise of said chamber; aerator means for aerating the flotation pulp secured to the walls of said chamber and communicating therewith to provide aerated water into said chamber; means for feeding mineral particles of coarse fraction, particles of the useful ingredient of the coarse fraction being capable of floating in the froth layer of the flotation pulp, in the form of a hydrocyclone having a cylindrical casing positioned axially over said chamber and a downwardly tapering outlet directed downwardly to feed the coarse particles to said chamber; feed pipe means for feeding the flotation pulp carrying mineral particles of coarse fraction positioned tangentially at said cylindrical casing of the hydrocyclone; and evacuation means for evacuating the liquid phase of the flotation pulp positioned tangentially at said casing of the hydrocyclone over said feed pipe means and connected to said feed pipe means for feeding the flotation pulp carrying mineral particles of the fine fraction.

Zlobin, M.N.; Permyakov, G.P.; Nemarov, A.A.; Metsik, V.M.; Medetsky, J.V.; Taraban, N.T.

1993-08-10

116

Machine Shop Lathes.  

ERIC Educational Resources Information Center

This guide, the second in a series of five machine shop curriculum manuals, was designed for use in machine shop courses in Oklahoma. The purpose of the manual is to equip students with basic knowledge and skills that will enable them to enter the machine trade at the machine-operator level. The curriculum is designed so that it can be used in…

Dunn, James

117

Accelerating machines: a review  

Microsoft Academic Search

This paper presents an overview of accelerating machines. We begin by exploring the history of the accelerating machine model and the potential power that it provides. We look at a number of computations that could be performed with an accelerating machine, and review various possible implementation methods that have been proposed. Finally, we expose the limitations of accelerating machines and

Robert Fraser; Selim G. Akl

2008-01-01

118

Extreme Kicking Machine  

NSDL National Science Digital Library

In this design challenge activity follow up to "Kicking Machine", learners add a hands-free feature to their Kicking Machine. Learners modify their kicking machine to have it either release the pendulum or rubber band while standing three feet away or have it automatically feed balls into the kicking machine, one after another. They must figure out how to integrate the new feature into the existing structure and use the design process to make sure the modified kicking machine works properly. Educators can use this activity to demonstrate simple machines and kinetic/potential energy.

Wgbh

2010-01-01

119

Minimization of Machining Allowance in Electrochemical Machining  

Microsoft Academic Search

Electrochemical machining (ECM) provides one of the best alternatives for producing complex shapes in advanced materials used in aircraft and aerospace industries. However, the reduction of sludge and memory errors continue to be major challenges for industries in addressing waste generation and accuracy improvement. This study focuses on minimizing the material to be removed by predicting minimum machining allowance and

K. P. Rajurkar; D. Zhu; B. Wei

1998-01-01

120

Semantical Machine Understanding.  

National Technical Information Service (NTIS)

Semantical Machine Understanding is the foundation for automatic sense and decision making of multinational, multicultural, and coalition applications. We show an innovative semantical machine understanding system that can be installed on each node of a n...

C. Kotak C. C. Zhou Y. Zhao

2008-01-01

121

Nontraditional Machining of Beryllium.  

National Technical Information Service (NTIS)

The report deals with electrichemical machining (ECM), chemical milling, and electric-discharge machining (EDM). The general characteristics of these processes and their applications to the processing of beryllium parts are presented and covered in detail...

J. A. Gurklis

1972-01-01

122

Bibliography on Machine Foundations.  

National Technical Information Service (NTIS)

Contents: Design criteria; Theoretical solutions for the response of machine foundations to vibration; Determination of dynamic soil parameters; Design of machine foundations; Control of vibration; Abstracts and references. (Portions of this document are ...

P. J. Moore

1978-01-01

123

Electrolytic Machining Development.  

National Technical Information Service (NTIS)

An investigation of electrolytic or electrochemical machining - a metal removal method is described and the advantages over other machining methods are reported. Special emphasis was given to: investigating effects of process variables, including electrol...

J. Bayer M. A. Cummings A. U. Jollis

1964-01-01

124

Association between the Severity of Angiographic Coronary Artery Disease and Paraoxonase Gene Polymorphisms in the National Heart, Lung, and Blood Institute-Sponsored Women's Ischemia Syndrome Evaluation (WISE) Study  

PubMed Central

Paraoxonase (PON), a high-density lipoprotein–associated enzyme, is believed to protect against low-density lipoprotein oxidation and thus affects the risk of coronary artery disease (CAD). Three polymorphisms in the PON1 (Leu55Met and Gln192Arg) and PON2 (Ser311Cys) genes have been shown to be associated with the risk of CAD in several European or European-derived populations. In the present study, we examined the associations between these three markers and the severity of CAD as determined by the number of diseased coronary artery vessels in 711 subjects (589 whites and 122 blacks) from the Women’s Ischemia Syndrome Evaluation (WISE) study. WISE is a National Heart, Lung, and Blood Institute–sponsored multicenter study designed to address issues related to ischemic-heart-disease recognition and diagnosis in women. Subjects were classified as having normal/minimal CAD (<20% stenosis), mild CAD (20%–49% stenosis), and significant CAD (?50% stenosis). The women who had ?50% stenosis were further classified into groups with one-, two-, or three-vessel disease if any of the three coronary arteries had diameter stenosis ?50%. No significant association was found between the PON polymorphisms and stenosis severity in either white or black women. However, among white women, when data were stratified by the number of diseased vessels, the frequency of the PON1 codon 192 Arg/Arg genotype was significantly higher in the group with three-vessel disease than in the other groups (those with one-vessel and two-vessel disease) combined (17.02% vs. 4.58%; P=.0066). Similarly, the frequency of the PON2 codon 311 Cys/Cys genotype was significantly higher in the group with three-vessel disease than in the other groups combined (15.22% vs. 4.61%; P=.018). The adjusted odds ratios for the development of three-vessel disease were 2.80 (95% confidence interval 1.06–7.37; P=.038) for PON1 codon 192 Arg/Arg and 3.68 (95% confidence interval 1.26–10.68; P=.017) for PON2 codon 311 Cys/Cys. Our data indicate that the severity of CAD, in terms of the number of diseased vessels, may be affected by common genetic variation in the PON gene cluster, on chromosome 7.

Chen, Qi; Reis, Steven E.; Kammerer, Candace M.; McNamara, Dennis M.; Holubkov, Richard; Sharaf, Barry L.; Sopko, George; Pauly, Daniel F.; Merz, C. Noel Bairey; Kamboh, M. Ilyas

2003-01-01

125

The Advantage of Machines  

NSDL National Science Digital Library

In this lesson, students learn about work as defined by physical science and see that work is made easier through the use of simple machines. Already encountering simple machines everyday, students will be learn about their widespread uses in improving everyday life. This lesson serves as the starting point for the Simple Machines Unit.

Integrated Teaching And Learning Program

126

Find the Simple Machines  

NSDL National Science Digital Library

This is a web activity about simple machines. Learners will explore a lawn mower and identify six different simple machines which work together to help make our lives easier. This is an excellent activity for exploring how simple machines, and science in general, apply to learners' everyday lives.

Cosi

2000-01-01

127

A COBOL Machine  

Microsoft Academic Search

This paper describes a research project undertaken by CII. This project is sponsored by the “Comité de Recherches en Informatique” contract No CRI 72-11. In this study, we have to define a COBOL Machine and a Compilation Machine and to implement them on a medium-scale microprogrammed computer. The expected results are : performance evaluation of these machines, code compaction, COBOL

R. J. Chevance

1974-01-01

128

Apprentice Machine Theory Outline.  

ERIC Educational Resources Information Center

|This volume contains outlines for 16 courses in machine theory that are designed for machine tool apprentices. Addressed in the individual course outlines are the following topics: basic concepts; lathes; milling machines; drills, saws, and shapers; heat treatment and metallurgy; grinders; quality control; hydraulics and pneumatics;…

Connecticut State Dept. of Education, Hartford. Div. of Vocational-Technical Schools.

129

Continuous mining machine  

SciTech Connect

This patent describes a continuous mining machine for excavating a longitudinal shaft or tunnel underneath the surface of the earth, the mining machine. It comprises: transport means for moving the machine over a floor of the shaft or tunnel that is being excavated; a working platform having forward and trailing ends.

Kiefer, H.E.

1992-02-11

130

Edheads: The Compound Machine  

NSDL National Science Digital Library

This resource is a collection of interactive animations designed to help kids learn how forces and simple machines can work together to create the compound machine. Child-centered animated activities enhance understanding of how compound machines function and how they are differentiated from simple machines. The animations require the Flash plug-in (there is a link for this on the page). Additionally the site includes a glossary of important terms, lesson plans, a teacher's guide and information from people who professionally work with compound machines. This page is part of a larger collection of animated education resources for the elementary level.

2007-09-18

131

Machine tool locator  

DOEpatents

Machine tools can be accurately measured and positioned on manufacturing machines within very small tolerances by use of an autocollimator on a 3-axis mount on a manufacturing machine and positioned so as to focus on a reference tooling ball or a machine tool, a digital camera connected to the viewing end of the autocollimator, and a marker and measure generator for receiving digital images from the camera, then displaying or measuring distances between the projection reticle and the reference reticle on the monitoring screen, and relating the distances to the actual position of the autocollimator relative to the reference tooling ball. The images and measurements are used to set the position of the machine tool and to measure the size and shape of the machine tool tip, and examine cutting edge wear. patent

Hanlon, John A. (Los Alamos, NM); Gill, Timothy J. (Stanley, NM)

2001-01-01

132

Edheads: Simple Machines  

NSDL National Science Digital Library

This interactive Flash activity invites kids to learn about simple and compound machines by investigating common household objects found in the kitchen and tool shed. The animated activities help them understand how the machines work and how to differentiate the various types of simple machine. Additionally the site provides a glossary of important terms, lesson plans and a teacher's guide. This page is part of a larger collection of game-like animations developed to teach children about science.

2007-08-16

133

OPTICAM machine design  

Microsoft Academic Search

Rank Pneumo has worked with the Center of Optics Manufacturing to design a multiple-axis flexible machining center for spherical lens fabrication. The OPTICAM\\/SM prototype machine has been developed in cooperation with the Center's Manufacturing Advisory Board. The SM will generate, fine grind, pre-polish, and center a spherical lens surface in one setup sequence. Unique features of the design incorporate machine

Jyrki T. Liedes

1992-01-01

134

The Vienna Abstract Machine  

Microsoft Academic Search

The Vienna Abstract Machine (VAM) is a Prolog machine developed at the TU Wien. In contrast to the standard implementation technique (Warren Abstract Machine - WAM), an inference in VAM is performed by unifying the goal and head immediately, instead of bypassing arguments through a register interface. We present two implemen- tations for VAM: VAM2P and VAM1P. VAM2P is well

Andreas Krall; Ulrich Neumerkel

1990-01-01

135

Machining: An Introduction  

NSDL National Science Digital Library

Basic machining processes are introduced on this site that is devoted to engineering fundamentals. Descriptions and illustrations of drilling, turning, grinding, and other common processes are provided for people with little to no prior machining knowledge. A waterjet is a non-traditional machining technology that uses high pressure streams of water with abrasive additives rather than solid cutting instruments to slice through metal and other materials.

2008-04-23

136

Prediction of Machine Tool Condition Using Support Vector Machine  

Microsoft Academic Search

Condition monitoring and predicting of CNC machine tools are investigated in this paper. Considering the CNC machine tools are often small numbers of samples, a condition predicting method for CNC machine tools based on support vector machines (SVMs) is proposed, then one-step and multi-step condition prediction models are constructed. The support vector machines prediction models are used to predict the

Peigong Wang; Qingfeng Meng; Jian Zhao; Junjie Li; Xiufeng Wang

2011-01-01

137

Design of precision desktop machine tools for meso-machining  

Microsoft Academic Search

The paper describes the classification of non-lithography based meso-manufacturing. Desktop machine tools and standard machine tools are the current manufacturing equipment for such machining scale, however desktop machines are the most economic and should achieve better accuracies. Various inherent problems and challenges in the development of highly precise desktop machine tools are discussed in this paper. A design strategy is

A. Khalid; S. Mekid

138

Debugging the virtual machine  

SciTech Connect

A computer program is really nothing more than a virtual machine built to perform a task. The program`s source code expresses abstract constructs using low level language features. When a virtual machine breaks, it can be very difficult to debug because typical debuggers provide only low level machine implementation in formation to the software engineer. We believe that the debugging task can be simplified by introducing aspects of the abstract design into the source code. We introduce OODIE, an object-oriented language extension that allows programmers to specify a virtual debugging environment which includes the design and abstract data types of the virtual machine.

Miller, P.; Pizzi, R.

1994-09-02

139

Laser beam machining method, laser beam machining apparatus, and laser beam machining product  

US Patent & Trademark Office Database

It is an object to provide a laser beam machining method which can easily cut a machining target. The laser beam machining method irradiates laser light while positioning a focus point at the inside of a machining target to thereby form a treated area based on multiphoton absorption along a planned cutting line of the machining target inside the machining target and also form a minute cavity at a predetermined position corresponding to the treated area in the machining target.

Fukumitsu; Kenshi (Hamamatsu, JP)

2009-10-20

140

Drum cutter mining machine  

SciTech Connect

A drum cutter mining machine includes a machine frame with a winch having a drive wheel to engage a rack or chain which extends along the path of travel by the mining machine to propel the machine along a mine face. The mining machine is made up of discrete units which include a machine body and machine housings joined to opposite sides of the machine body. The winch is either coupled through a drive train with a feed drive motor or coupled to the drive motor for cutter drums. The machine housings each support a pivot shaft coupled by an arm to a drum cutter. One of these housings includes a removable end cover and a recess adapted to receive a support housing for a spur gear system used to transmit torque from a feed drive motor to a reduction gear system which is, in turn, coupled to the drive wheel of the winch. In one embodiment, a removable end cover on the machine housing provides access to the feed drive motor. The feed drive motor is arranged so that the rotational axis of its drive output shaft extends transversely to the stow side of the machine frame. In another embodiment, the reduction gear system is arranged at one side of the pivot shaft for the cutter drum while the drive motor therefor is arranged at the other side of the pivot shaft and coupled thereto through the spur gear system. In a further embodiment, the reduction gear system is disposed between the feed motor and the pivot shaft.

Oberste-beulmann, K.; Schupphaus, H.

1980-02-19

141

Diamond machine tool face lapping machine  

DOEpatents

An apparatus for shaping, sharpening and polishing diamond-tipped single-point machine tools. The isolation of a rotating grinding wheel from its driving apparatus using an air bearing and causing the tool to be shaped, polished or sharpened to be moved across the surface of the grinding wheel so that it does not remain at one radius for more than a single rotation of the grinding wheel has been found to readily result in machine tools of a quality which can only be obtained by the most tedious and costly processing procedures, and previously unattainable by simple lapping techniques.

Yetter, H.H.

1985-05-06

142

Hybrid machining of Inconel 718  

Microsoft Academic Search

A new approach for machining of Inconel 718 is presented in this paper. It combines traditional turning with cryogenically enhanced machining and plasma enhanced machining. Cryogenically enhanced machining is used to reduce the temperatures in the cutting tool, and thus reduces temperature-dependent tool wear to prolong tool life, whereas plasma enhanced machining is used to increase the temperatures in the

Z. Y Wang; K. P Rajurkar; J Fan; S Lei; Y. C Shin; G Petrescu

2003-01-01

143

Combining programs and state machines  

Microsoft Academic Search

State machines consume and process actions complementary to programs issuing actions. State machines maintain a state and reply with a boolean response to each action in their interface. As state machines offer a service to programs, their interface is also called a service interface. State machines can be combined with several natural operators, thus giving rise to a state machine

Jan A. Bergstra; Alban Ponse

2002-01-01

144

BRITISH MOLDING MACHINE, PBQ AUTOMATIC COPE AND DRAG MOLDING MACHINE ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

BRITISH MOLDING MACHINE, PBQ AUTOMATIC COPE AND DRAG MOLDING MACHINE MAKES BOTH MOLD HALVES INDIVIDUALLY WHICH ARE LATER ROTATED, ASSEMBLED, AND LOWERED TO POURING CONVEYORS BY ASSISTING MACHINES. - Southern Ductile Casting Company, Casting, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

145

14. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

14. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to north (90mm lens). - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

146

High-Speed Machining of Materials with Low Machinability.  

National Technical Information Service (NTIS)

Materials with low machinability are often characterized by the difficulty of machining them by almost any cutting method. However, nowadays there are some advanced cutting methods and cutting tool materials available to make their machining possible. Cla...

J. Paro I. Nieminen V. Kauppinen

1995-01-01

147

Machine vision metal inspection  

NASA Astrophysics Data System (ADS)

A new procedure is presented to introduce machine vision into a rolling mill environment for real-time on-line metal bar and rod inspection for flaw detection and characterization. Results are presented relating machine vision metal flaw signatures to flaw type and characteristics.

Morris, John W.; Notarangelo, Joseph

1994-03-01

148

Biological Molecular Machines  

NASA Astrophysics Data System (ADS)

Like small molecules taking part in usual chemical reactions, biological molecular machines perform their functions owing to thermal fluctuations and the only difference consists in more complex and specially organized internal dynamics. It is this dynamics that determines processes of free energy transduction in molecular machines. The case of the actomyosin motor is considered in some detail.

Kurzy?ski, Micha?

2007-11-01

149

Relational Temporal Machines  

Microsoft Academic Search

The paper introduces and investigates relational temporal machine (RTM) as a general abstract model for generic temporal querying. The RTM devices subsume most temporal query languages that have emerged in the literature. A first contribution of the paper is to provide two simplified forms for our machines, namely extended one- tape RTMS and one-tape RTMS. Another contribution is to establish

Nicole Bidoit; Francois Hantry

2007-01-01

150

Why Machine Ethics?  

Microsoft Academic Search

Machine ethics isn't merely science fiction; it's a topic that requires serious consideration, given the rapid emergence of increasingly complex autonomous software agents and robots. Machine ethics is an emerging field that seeks to implement moral decision-making faculties in computers and robots. We already have semiautonomous robots and software agents that violate ethical standards as a matter of course. In

Colin Allen; Wendell Wallach; Iva Smit

2006-01-01

151

The Chemical Abstract Machine  

Microsoft Academic Search

We introduce a new kind of abstract machine based on the chemical metaphor used in the ? language of Banâtre & al. States of a machine are chemical solutions where floating molecules can interact according to reaction rules. Solutions can be stratified by encapsulating subsolutions within membranes that force reactions to occur locally. We illustrate the use of this model

Gérard Berry; Gérard Boudol

1990-01-01

152

Simple Machine Junk Cars  

ERIC Educational Resources Information Center

|During the month of May, the author's eighth-grade physical science students study the six simple machines through hands-on activities, reading assignments, videos, and notes. At the end of the month, they can easily identify the six types of simple machine: inclined plane, wheel and axle, pulley, screw, wedge, and lever. To conclude this unit,…

Herald, Christine

2010-01-01

153

Wave Machine Model  

NSDL National Science Digital Library

The Wave Machine model simulates the wave machine produced by John Shive at Bell Laboratories and made famous by the PSSC Simple Waves film. The machine consists of horizontal bars welded to a torsion rod that is perpendicular to the bars. The simulation allows the user to change the lengths of the bars, thereby simulating the effect of a wave propagating in a non-uniform medium. The simulation allows various pulse shapes to be sent down the machine by selecting a function for the twist of the first rod or by dragging the first rod. For example, applying a Gaussian twist produces a Gaussian traveling pulse but the width of this pulse depends on the wave speed. The far end of the wave machine can be free or clamped and this changes the nature of the reflected wave. The Wave Machine model is a supplemental simulation for the article "Standing Waves in a Nonuniform Medium" by Paul Gluck in The Physics Teacher 49(2), 76-77 (2011) and has been approved by the authors and The Physics Teacher editor. The Wave Machine model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_mech_osc_chains_WaveMachine.jar file will run the program if Java is installed.

Christian, Wolfgang

2010-11-07

154

Support vector machines  

Microsoft Academic Search

My first exposure to Support Vector Machines came this spring when heard Sue Dumais present impressive results on text categorization using this analysis technique. This issue's collection of essays should help familiarize our readers with this interesting new racehorse in the Machine Learning stable. Bernhard Scholkopf, in an introductory overview, points out that a particular advantage of SVMs over other

M. A. Hearst; S. T. Dumais; E. Osman; J. Platt; B. Scholkopf

1998-01-01

155

Stirling machine operating experience  

SciTech Connect

Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that stirling machines are capable of reliable and lengthy operating lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and are not expected to operate for lengthy periods of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered. The record in this paper is not complete, due to the reluctance of some organizations to release operational data and because several organizations were not contacted. The authors intend to repeat this assessment in three years, hoping for even greater participation.

Ross, B. [Stirling Technology Co., Richland, WA (United States); Dudenhoefer, J.E. [Lewis Research Center, Cleveland, OH (United States)

1994-09-01

156

Imagining machines with imagination  

Microsoft Academic Search

The author reviews and comments upon George Morton's predictive paper “Machines with Imagination”. He argues that Morton's paper demonstrates a significant insight into the progress of machine intelligence, particularly because that progress was hardly accomplished in a linear progression of systematic advances. Indeed, the forecasts laid down in Morton's paper have become pertinent only after a series of relative failures

DAVID B. FOGEL

2000-01-01

157

Walking machines for space  

NASA Astrophysics Data System (ADS)

A study of a new walking machine model differing from existing walking machines both in geometry and control is presented. The main criteria used in the model are not technical principles as used in existing walking machines, but rather biological principles found in insects, the living prototypes of walking machines. The goal of this method is to obtain a harmonic gait which is very robust against disturbances and therefore is suitable to be used on uneven ground found on planets. The geometry, the kinematics and the kinetics of the walking machine model is introduced and the control is explained. Experimental results of this concept tested on a single laboratory leg are shown to prove the robustness of the controller.

Eltze, J.; Weidemann, H.-J.; Pfeiffer, F.

1993-01-01

158

Cooperating reduction machines  

SciTech Connect

This paper presents a concept and a system architecture for the concurrent execution of program expressions of a concrete reduction language based on lamda-expressions. If formulated appropriately, these expressions are well-suited for concurrent execution, following a demand-driven model of computation. In particular, recursive program expressions with nonlinear expansion may, at run time, recursively be partitioned into a hierarchy of independent subexpressions which can be reduced by a corresponding hierarchy of virtual reduction machines. This hierarchy unfolds and collapses dynamically, with virtual machines recursively assuming the role of masters that create and eventually terminate, or synchronize with, slaves. The paper also proposes a nonhierarchically organized system of reduction machines, each featuring a stack architecture, that effectively supports the allocation of virtual machines to the real machines of the system in compliance with their hierarchical order of creation and termination. 25 references.

Kluge, W.E.

1983-11-01

159

Dictionary machine (for VLSI)  

SciTech Connect

The authors present the design of a dictionary machine that is suitable for VLSI implementation, and discusses how to realize this implementation efficiently. The machine supports the operations of search, insert, delete, and extractment on an arbitrary ordered set. Each of these operations takes time o(logn), where n is the number of entries present when the operation is performed. Moreover, arbitrary sequences of these instructions can be pipelined through the machine at a constant rate (i.e. independent of n and the capacity of the machine). The time o(logn) is an improvement over previous VLSI designs of dictionary machines which require time o(log n) per operation, where n is the maximum number of keys that can be stored. 10 references.

Ottmann, T.A.; Rosenberg, A.L.; Stockmeyer, L.J.

1982-09-01

160

From Reduction Machines To Narrowing Machines  

Microsoft Academic Search

Narrowing, the evaluation mechanism of functional logic languages, can be seen as a generalizationof reduction, the evaluation mechanism of purely functional languages. The unidirectionalpattern matching, which is used for parameter passing in functional languages, is simplyreplaced by the bidirectional unification known from logic programming languages. We showin this paper, how to extend a reduction machine, that has been designed for

Rita Loogen; RWTH Aachen

1991-01-01

161

Diamond Turning Machine Design Overview.  

National Technical Information Service (NTIS)

Ultraprecision, single-point diamond tool machining is a rapidly developing technology that is able to provide cost-effective optical reflectors. These diamond-turning machines utilize conventional machine-tool-design concepts. However, additional attenti...

W. E. Barkman P. J. Steger

1978-01-01

162

Machine Learning and Radiology  

PubMed Central

In this paper, we give a short introduction to machine learning and survey its applications in radiology. We focused on six categories of applications in radiology: medical image segmentation, registration, computer aided detection and diagnosis, brain function or activity analysis and neurological disease diagnosis from fMR images, content-based image retrieval systems for CT or MRI images, and text analysis of radiology reports using natural language processing (NLP) and natural language understanding (NLU). This survey shows that machine learning plays a key role in many radiology applications. Machine learning identifies complex patterns automatically and helps radiologists make intelligent decisions on radiology data such as conventional radiographs, CT, MRI, and PET images and radiology reports. In many applications, the performance of machine learning-based automatic detection and diagnosis systems has shown to be comparable to that of a well-trained and experienced radiologist. Technology development in machine learning and radiology will benefit from each other in the long run. Key contributions and common characteristics of machine learning techniques in radiology are discussed. We also discuss the problem of translating machine learning applications to the radiology clinical setting, including advantages and potential barriers.

Wang, Shijun; Summers, Ronald M.

2012-01-01

163

Engineering: Simple Machines  

NSDL National Science Digital Library

Simple machines are devices with few or no moving parts that make work easier. Students are introduced to the six types of simple machines â the wedge, wheel and axle, lever, inclined plane, screw, and pulley â in the context of the construction of a pyramid, gaining high-level insights into tools that have been used since ancient times and are still in use today. In two hands-on activities, students begin their own pyramid design by performing materials calculations, and evaluating and selecting a construction site. The six simple machines are examined in more depth in subsequent lessons in this unit.

Integrated Teaching And Learning Program

164

OPTICAM machine design  

NASA Astrophysics Data System (ADS)

Rank Pneumo has worked with the Center of Optics Manufacturing to design a multiple-axis flexible machining center for spherical lens fabrication. The OPTICAM/SM prototype machine has been developed in cooperation with the Center's Manufacturing Advisory Board. The SM will generate, fine grind, pre-polish, and center a spherical lens surface in one setup sequence. Unique features of the design incorporate machine resident metrology to provide RQM (Real-time Quality Management) and closed-loop feedback control that corrects for lens thickness, diameter, and centering error. SPC (Statistical Process Control) software can compensate for process drift and QA data collection is provided without additional labor.

Liedes, Jyrki T.

1992-01-01

165

Mark Making Machines  

NSDL National Science Digital Library

In this activity, learners create a Mark Making Machine, a motorized writing tool that seems to walk about using an off-balanced DC motor, marker, and other materials. The rotational vibrations cause the machine to move and make marks. Mark Making Machines can take multiple forms and be made out of a variety of recycled materials. After an initial investment, materials can be re-used almost indefinitely. This activity guide contains suggested materials, building instructions, and other resources. A great activity for a wide age range.

Houston, Children'S M.

2009-01-01

166

Virtual Turing Machine 2  

NSDL National Science Digital Library

A Turing machine is theoretical computer consisting of a finite set of internal states, a finite alphabet that includes a blank symbol, and a finite set of instructions. It has a physical head and a physical infinitely long tape, which is divided into cells. The cell values consist of the alphabet. The tape has a finite number of non-blank cells. The head can read and write to the cells and move the tape one cell to the left and one cell to the right. The Virtual Turing Machine lets you input tape values and an instruction set to see the output of a turing machine.

Ming, Paul R.

167

16. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

16. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to south (90mm lens). Note the large segmental-arched doorway to move locomotives in and out of Machine Shop. - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

168

Machine Tools (Selected Articles).  

National Technical Information Service (NTIS)

Partial Contents: The Primary Duties of Our Country's Machinery Industry in the Area of Production Engineering during the Seventh Five Period, The Research Status and Trend in our Country's Machine Tools Technology - An Overview of Papers Presented by the...

1986-01-01

169

Machines That Teach.  

National Technical Information Service (NTIS)

The article deals with programmed teaching and application of technical media - informing, controlling, and informing-controlling facilities. The topics include the experimental work being done in Poland on prototypes of teaching machines, and application...

J. Sniecinski

1971-01-01

170

Machining High Purity Alumina.  

National Technical Information Service (NTIS)

The report contains a general discussion of the purposes of the demonstration to machine high purity polycrystalline alumina by prior treatment with HF. It then goes into the investigations of samples of three known manufacturers of high purity polycrysta...

P. A. Marshall J. M. Infield

1964-01-01

171

Machine Tool Evaluation.  

National Technical Information Service (NTIS)

Continued improvement in numerical control (NC) units and the mechanical components used in the construction of today's machine tools, necessitate the use of more precise instrumentation to calibrate and determine the capabilities of these systems. It is ...

B. E. Lunsford

1976-01-01

172

Sealing intersecting vane machines  

DOEpatents

The invention provides a toroidal intersecting vane machine incorporating intersecting rotors to form primary and secondary chambers whose porting configurations minimize friction and maximize efficiency. Specifically, it is an object of the invention to provide a toroidal intersecting vane machine that greatly reduces the frictional losses through intersecting surfaces without the need for external gearing by modifying the width of one or both tracks at the point of intermeshing. The inventions described herein relate to these improvements.

Martin, Jedd N. (Providence, RI); Chomyszak, Stephen M. (Attleboro, MA)

2007-06-05

173

The Lisp Machine manual  

Microsoft Academic Search

This 471-page, softcover manual describes the programming language and software environment of the Lisp Machine developed at M.I.T.'s Artificial Intelligence Laboratory over the past 8 years. The Lisp Machine is the result of a successful experiment in computer science: a distributed computing system consisting of a network of powerful 32-bit personal computers, implemented with custom hardware and software as complete,

Daniel Weinreb; David Moon

1981-01-01

174

Reactive Turing Machines  

Microsoft Academic Search

\\u000a We propose reactive Turing machines (RTMs), extending classical Turing machines with a process-theoretical notion of interaction.\\u000a We show that every effective transition system is simulated modulo branching bisimilarity by an RTM, and that every computable\\u000a transition system with a bounded branching degree is simulated modulo divergence-preserving branching bisimilarity. We conclude\\u000a from these results that the parallel composition of (communicating) RTMs

Jos C. M. Baeten; Bas Luttik; Paul van Tilburg; O. Owe; M. Steffen; J. A. Telle

2011-01-01

175

Design a Flying Machine  

NSDL National Science Digital Library

The purpose of this activity is for the students to draw a design for their own flying machine. They will apply their knowledge of aircraft design and the forces acting on them. The students will start with a brainstorming activity where they come up with creative uses for every day objects. They will then use their creativity and knowledge of airplanes to design their own flying machine.

Integrated Teaching And Learning Program

176

Metalworking and machining fluids  

DOEpatents

Improved boron-based metal working and machining fluids. Boric acid and boron-based additives that, when mixed with certain carrier fluids, such as water, cellulose and/or cellulose derivatives, polyhydric alcohol, polyalkylene glycol, polyvinyl alcohol, starch, dextrin, in solid and/or solvated forms result in improved metalworking and machining of metallic work pieces. Fluids manufactured with boric acid or boron-based additives effectively reduce friction, prevent galling and severe wear problems on cutting and forming tools.

Erdemir, Ali (Naperville, IL); Sykora, Frank (Caledon, ON, CA); Dorbeck, Mark (Brighton, MI)

2010-10-12

177

Vending machine accountability system  

US Patent & Trademark Office Database

An accountability system for a vending machine system having means for vending products and means for determining credit, the accountability system comprising a portable electronic data file module which is removable from the system, and means for collecting transaction data from the vending machine system and recording it in the portable electronic data file module. A module interlock and a power monitor are provided to ensure that accurate information is stored in the module.

1981-06-09

178

Ensembles of learning machines  

Microsoft Academic Search

Ensembles of learning machines constitute one of the main current directions in machine learning research, and have been applied\\u000a to a wide range of real problems. Despite of the absence of an unified theory on ensembles, there are many theoretical reasons\\u000a for combining multiple learners, and an empirical evidence of the effectiveness of this approach. In this paper we present

Giorgio Valentini; Francesco Masulli

2002-01-01

179

Driven Wave Machine Model  

NSDL National Science Digital Library

The Driven Wave Machine model simulates a wave machine driven by a sinusoidal oscillator. The machine consists of horizontal bars welded to a torsion rod that is perpendicular to the bars. The simulation allows the user to change the number of bars, the drive frequency, and the boundary conditions. The simulation also allows the user to change the lengths of the bars, thereby simulating the effect of a wave propagating in a non-uniform medium. The Driven Wave Machine model is a supplemental simulation for the article "Standing Waves in a Nonuniform Medium" by Paul Gluck in The Physics Teacher 49(2), 76-77 (2011) and has been approved by the authors and The Physics Teacher editor. The Driven Wave Machine model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_mech_osc_chains_DrivenWaveMachine.jar file will run the program if Java is installed.

Christian, Wolfgang

2010-11-09

180

Machining of fiber reinforced composites  

NASA Astrophysics Data System (ADS)

Factors involved in machining of fiber-reinforced composites are reviewed. Consideration is given to properties of composites reinforced with boron filaments, glass fibers, aramid fibers, carbon fibers, and silicon carbide fibers and to polymer (organic) matrix composites, metal matrix composites, and ceramic matrix composites, as well as to the processes used in conventional machining of boron-titanium composites and of composites reinforced by each of these fibers. Particular attention is given to the methods of nonconventional machining, such as laser machining, water jet cutting, electrical discharge machining, and ultrasonic assisted machining. Also discussed are safety precautions which must be taken during machining of fiber-containing composites.

Komanduri, Ranga; Zhang, Bi; Vissa, Chandra M.

181

Extreme ultraviolet lithography machine  

DOEpatents

An extreme ultraviolet lithography (EUVL) machine or system for producing integrated circuit (IC) components, such as transistors, formed on a substrate. The EUVL machine utilizes a laser plasma point source directed via an optical arrangement onto a mask or reticle which is reflected by a multiple mirror system onto the substrate or target. The EUVL machine operates in the 10-14 nm wavelength soft x-ray photon. Basically the EUV machine includes an evacuated source chamber, an evacuated main or project chamber interconnected by a transport tube arrangement, wherein a laser beam is directed into a plasma generator which produces an illumination beam which is directed by optics from the source chamber through the connecting tube, into the projection chamber, and onto the reticle or mask, from which a patterned beam is reflected by optics in a projection optics (PO) box mounted in the main or projection chamber onto the substrate. In one embodiment of a EUVL machine, nine optical components are utilized, with four of the optical components located in the PO box. The main or projection chamber includes vibration isolators for the PO box and a vibration isolator mounting for the substrate, with the main or projection chamber being mounted on a support structure and being isolated.

Tichenor, Daniel A. (Castro Valley, CA); Kubiak, Glenn D. (Livermore, CA); Haney, Steven J. (Tracy, CA); Sweeney, Donald W. (San Ramon, CA)

2000-01-01

182

Swinging Atwood's Machine Model  

NSDL National Science Digital Library

The Swinging Atwood's Machine Model is an extension of the traditional Atwood's machine where one hanging mass is allowed to swing like a pendulum. One assumes that all motions for the swinging mass are possible including positions above the second peg which requires that the string remains rigid at all times. Unlike the traditional Atwood's machine, orbits or cycles are possible. In other words, for certain conditions, the motion of the Atwood's machine can continue indefinitely. In changing the ratio of the two masses and the initial angle of displacement, the trajectory of the swinging mass changes. The object of this simulation is to model that system and allow the user a large amount of control over initial conditions so that they may fully explore the system. The Swinging Atwood's Machine Model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_comp_phys_swinging_atwoods.jar file will run the program if Java is installed.

Ruckle, Leah

2011-06-15

183

Micro-machined resonator  

DOEpatents

A micro-machined resonator, typically quartz, with upper and lower micro-machinable support members, or covers, having etched wells which may be lined with conductive electrode material, between the support members is a quartz resonator having an energy trapping quartz mesa capacitively coupled to the electrode through a diaphragm; the quartz resonator is supported by either micro-machined cantilever springs or by thin layers extending over the surfaces of the support. If the diaphragm is rigid, clock applications are available, and if the diaphragm is resilient, then transducer applications can be achieved. Either the thin support layers or the conductive electrode material can be integral with the diaphragm. In any event, the covers are bonded to form a hermetic seal and the interior volume may be filled with a gas or may be evacuated. In addition, one or both of the covers may include oscillator and interface circuitry for the resonator.

Godshall, N.A.; Koehler, D.R.; Liang, A.Y.; Smith, B.K.

1993-03-30

184

New photolithography stepping machine  

SciTech Connect

A joint development project to design a new photolithography steeping machine capable of 150 nanometer overlay accuracy was completed by Ultratech Stepper and the Lawrence Livermore National Laboratory. The principal result of the project is a next-generation product that will strengthen the US position in step-and-repeat photolithography. The significant challenges addressed and solved in the project are the subject of this report. Design methods and new devices that have broader application to precision machine design are presented in greater detail while project specific information serves primarily as background and motivation.

Hale, L.; Klingmann, J. [Lawrence Livermore National Lab., CA (United States); Markle, D. [Ultratech Stepper Inc. (United States)

1995-03-08

185

BRASS FOUNDRY MACHINE ROOM USED TO MACHINE CAST BRONZE PIECES ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

BRASS FOUNDRY MACHINE ROOM USED TO MACHINE CAST BRONZE PIECES FOR VALVES AND PREPARE BRONZE VALVE BODIES FOR ASSEMBLY. - Stockham Pipe & Fittings Company, Brass Foundry, 4000 Tenth Avenue North, Birmingham, Jefferson County, AL

186

Double Function Machine  

NSDL National Science Digital Library

This Flash applet allows the user to explore the concept of a function using an input-output machine with two operations and options to set and hide or reveal all operations and numbers. A notepad is available for recording inputs and outputs, and a loop function takes the current output as the next input.

Bunker, Dan

2010-01-01

187

Introduction to Exploring Machines  

ERIC Educational Resources Information Center

|Young children are fascinated by how things "work." They are at a stage of development where they want to experiment with the many ways to use an object or take things apart and put them back together. In the process of exploring tools and machines, children use the scientific method and problem-solving skills. They observe how things work,…

Early Childhood Today, 2006

2006-01-01

188

The Variable Machine  

NSDL National Science Digital Library

This math lesson provides an introduction to the use of variables, and develops learners' algebraic thinking. Learners create "variable machines" out of paper to discover the "value" of words like their first and last names. Learners explore which words have even or odd values and which words have the largest value. This lesson guide includes questions for learners, extensions, and reflection questions.

Mathematics, National C.

2008-01-01

189

The Connection Machine  

Microsoft Academic Search

This book describes what history may judge to be the second stage in the evolution of digital computers. Up to now, all computers have had basically the same architecture: one or a few large memory banks. Challenging that conception, the Connection Machine links together thousands or millions of extremely small processors and memories. From each moment to the next, the

W. Daniel Hillis

1985-01-01

190

Working with Simple Machines  

ERIC Educational Resources Information Center

|A set of examples is provided that illustrate the use of work as applied to simple machines. The ramp, pulley, lever and hydraulic press are common experiences in the life of a student, and their theoretical analysis therefore makes the abstract concept of work more real. The mechanical advantage of each of these systems is also discussed so that…

Norbury, John W.

2006-01-01

191

Continuous mining machine  

Microsoft Academic Search

A continuous mining machine is described comprising an elongated conveyor assembly for continuously conveying coal cut from a coal seam rearwardly away from the face of the coal seam being cut. The conveyor assembly has a frame structure associated therewith, power driven cutting and conveying means disposed forwardly with respect to the frame structure for cutting coal from the coal

A. G. Jr. Wilcox; R. D. Plumley

1986-01-01

192

Laser machining of explosives  

DOEpatents

The invention consists of a method for machining (cutting, drilling, sculpting) of explosives (e.g., TNT, TATB, PETN, RDX, etc.). By using pulses of a duration in the range of 5 femtoseconds to 50 picoseconds, extremely precise and rapid machining can be achieved with essentially no heat or shock affected zone. In this method, material is removed by a nonthermal mechanism. A combination of multiphoton and collisional ionization creates a critical density plasma in a time scale much shorter than electron kinetic energy is transferred to the lattice. The resulting plasma is far from thermal equilibrium. The material is in essence converted from its initial solid-state directly into a fully ionized plasma on a time scale too short for thermal equilibrium to be established with the lattice. As a result, there is negligible heat conduction beyond the region removed resulting in negligible thermal stress or shock to the material beyond a few microns from the laser machined surface. Hydrodynamic expansion of the plasma eliminates the need for any ancillary techniques to remove material and produces extremely high quality machined surfaces. There is no detonation or deflagration of the explosive in the process and the material which is removed is rendered inert.

Perry, Michael D. (Livermore, CA); Stuart, Brent C. (Fremont, CA); Banks, Paul S. (Livermore, CA); Myers, Booth R. (Livermore, CA); Sefcik, Joseph A. (Tracy, CA)

2000-01-01

193

Fatigue Testing Machine.  

National Technical Information Service (NTIS)

A clamp is provided for use in conjunction with a structural bending-type fatigue testing machine. It applies cyclic bending to the member and at the same time allows expansion of the member relative to the clamp due to the heat generated in the specimen ...

V. E. Sullivan R. L. Waterman

1965-01-01

194

Imbalance rotating machine balancing  

Microsoft Academic Search

Imbalance analysis is essential in the rotating machine. However, some problems still remain in the aspects of computational efficiency and accuracy. In the present paper, a new method was proposed for estimating the mass imbalance of a rotating shaft by using the vibration signals. This is a new method for the detection of a mass imbalance and its phase position.

Hua Su; Han-Soo Choi; Kil T. Chong

2005-01-01

195

The Engima Cipher Machine  

Microsoft Academic Search

There can be little doubt that the German “Enigma” was the best and safest mechanical cipher machine available in any country at the outbreak of the Second World War. Its general use by all three services of the German armed forces presented the Allies with a very serious impediment to their efforts to read the German military message traffic and

Tony Wilson

2012-01-01

196

Making molecular machines work  

Microsoft Academic Search

In this review we chart recent advances in what is at once an old and very new field of endeavour — the achievement of control of motion at the molecular level including solid-state and surface-mounted rotors, and its natural progression to the development of synthetic molecular machines. Besides a discussion of design principles used to control linear and rotary motion

Wesley R. Browne; Ben L. Feringa

2006-01-01

197

8. VIEW OF THE MACHINE SHOP. BY 1966, THE MACHINE ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

8. VIEW OF THE MACHINE SHOP. BY 1966, THE MACHINE SHOP HANDLED PRIMARILY STAINLESS STEEL COMPONENTS, WHICH WERE SENT TO THE MACHINE SHOP TO BE FORMED INTO THEIR FINAL SHAPES. (7/24/70) - Rocky Flats Plant, General Manufacturing, Support, Records-Central Computing, Southern portion of Plant, Golden, Jefferson County, CO

198

Tool allocation and machining conditions optimization for CNC machines  

Microsoft Academic Search

In the literature, there exist many variations of machining economics problem in terms of modelling approaches and solution methodologies. However most of the existing studies focus on the single machining operation which is seldom in practice. On the other hand, tool management approaches at the system level fail to relate the tooling issues to the machining conditions, and ignore the

M. Selim Akturk; Selcuk Avci

1996-01-01

199

Machining Characteristics of Polycrystalline Silicon by Wire Electrical Discharge Machining  

Microsoft Academic Search

This study examines the use of wire electrical discharge machining (WEDM) in machining polycrystalline silicon with resistivity of 2–3 ?cm. The effects of different WEDM parameters on cutting speed, machining groove width, and surface roughness are explored. Experimental results indicate that open voltage is the critical parameter in breaking the insulation of polycrystalline silicon, and that pulse-on time has the

Po-Huai Yu; Hsiang-Kuo Lee; Yang-Xin Lin; Shi-Jie Qin; Biing-Hwa Yan; Fuang-Yuan Huang

2011-01-01

200

Control of synchronous reluctance machines  

Microsoft Academic Search

A comprehensive approach to the control of inverter-fed synchronous reluctance machines is developed, based on the machine's ideal model. From the theory, a control simulation is designed. Simulation results are presented

R. E. Betzt

1991-01-01

201

Enhanced Machine Controller Architecture Overview.  

National Technical Information Service (NTIS)

The National Institute of Standards and Technology (NIST) Enhanced Machine Controller program has defined an architecture for controllers, with an emphasis on machine tools. The architecture defines a set of components and their interfaces. The objective ...

F. M. Proctor J. Michaloski

1993-01-01

202

Move it! With Simple Machines  

NSDL National Science Digital Library

In this Science NetLinks lesson, students will start by discussing a couple of the simple machines and what the purpose of them might be. Then, after reading a short page on each simple machine, they will discuss how the simple machines function. They will explore this briefly in a hands-on fashion and lead into the discussion and realization that these tools are the base for almost any machine or more complex tool that we use.

Science Netlinks;

2003-01-21

203

Dynamic characterization of machining systems  

Microsoft Academic Search

In the working space model of machining, an experimental procedure is implemented to determine the elastic behaviour of the\\u000a machining system. In this paper, a dynamic characterization and vibration analysis has long been used for the detection and\\u000a identification of the machine tool condition. The natural frequencies of the lathe machining system are required (Ernault\\u000a HN400—France) according to three different

Miron Zapciu; Jean-Yves K’nevez; Alain Gérard; Olivier Cahuc; Claudiu Florinel Bisu

204

Linear-motion electrical machines  

Microsoft Academic Search

A survey of linear-motion electrical machines is presented. Although various types of dc and ac linear machines are briefly mentioned, linear induction motors are the main concern of the paper and they are discussed in considerable detail. Based on topological considerations, a classification of these machines is presented and their development through the last 70 years is reviewed. A brief

E. R. Laithwaite; S. A. Nasar

1970-01-01

205

The Cooling of Electric Machines  

Microsoft Academic Search

The elevation in temperature of the windings of any electric machine due to the internal heat losses is usually the dominating factor in limiting the rating of the machine. This limitation found in the heating, is primarily due to the effects of high temperatures on the various types of insulation used in such machines. The American Institute of Electrical Engineers

George E. Luke

1923-01-01

206

Cowl arrangements for mining machines  

SciTech Connect

A roll of wire mesh is supported on the rear of a cut mineral loading cowl of a rock or mineral winning machine. As the machine traverses along a path cut by the machine the wire mesh is paid out to retain or contain the roof material.

Bell, R.L.; Garner, J.B.; Salmon, D.

1980-10-21

207

LASER ENHANCED ELECTROCHEMICAL MACHINING PROCESS  

Microsoft Academic Search

An experimental apparatus was designed and built for the hybrid process of laser enhanced electrochemical machining (ECM). Comparison experiments had been done between solely ECM and laser enhanced ECM. The machining performance of hybrid process was investigated and compared with solely ECM. The principle of the hybrid process was exposed by analyzing the microstructure of machining surface. The results show

Yaxin Tang

2002-01-01

208

On communicating with semantic machines  

Microsoft Academic Search

Semantics is the essence of human communication. It concerns the manufacture and use of symbols as representations to exchange meanings. Information technology is faced with the problem of using intelligent machines as intermediaries for interpersonal communication. The problem of designing such semantic machines has been intractable because brains and machines work on very different principles. A solution to the problem

Walter J Freeman

209

Comparison of Machine Learning Algorithms for Classification of the Sentences in Three Clinical Practice Guidelines  

PubMed Central

Objectives Clinical Practice Guidelines (CPGs) are an effective tool for minimizing the gap between a physician's clinical decision and medical evidence and for modeling the systematic and standardized pathway used to provide better medical treatment to patients. Methods In this study, sentences within the clinical guidelines are categorized according to a classification system. We used three clinical guidelines that incorporated knowledge from medical experts in the field of family medicine. These were the seventh report of the Joint National Committee (JNC7) on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure from the National Heart, Lung, and Blood Institute; the third report of the National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults from the same institution; and the Standards of Medical Care in Diabetes 2010 report from the American Diabetes Association. Three annotators each tagged 346 sentences hand-chosen from these three clinical guidelines. The three annotators then carried out cross-validations of the tagged corpus. We also used various machine learning-based classifiers for sentence classification. Results We conducted experiments using real-valued features and token units, as well as a Boolean feature. The results showed that the combination of maximum entropy-based learning and information gain-based feature extraction gave the best classification performance (over 98% f-measure) in four sentence categories. Conclusions This result confirmed the contribution of the feature reduction algorithm and optimal technique for very sparse feature spaces, such as the sentence classification problem in the clinical guideline document.

Song, Mi Hwa; Lee, Young Ho

2013-01-01

210

Association installs condom machine.  

PubMed

On the occasion of World Population Day (11 July), India installed its first condom vending machine. The machine was inaugurated by Mr. Eruch Lala, an official of the Family Planning Association of India, as part of the association's campaign to help the country curb its rapid population growth rate and stem the spread of AIDS (acquired immune deficiency syndrome). Each condom, called sangam ("union" in English) costs Rupees 2 (about 6.5 US cents). The machine is located at a textile mill in Bombay. The Association said it would install at least 60 such machines in Bombay over the coming months. "A psychological advantage of the machine is that the user need not personally meet the dispenser and can collect a condom without any embarrassment," Mr. Lala said. "The machine is expected to promote efforts at curbing population growth and prevent the spread of AIDS," he said. In a separate report, AIDS has been found to be racing through India just eight years after the first case was detected. Prostitutes, drug addicts and untested blood supplies are the conduits. More than half of the prostitutes in cities such as Bombay have HIV (human immunodeficiency virus), which causes AIDS. The truck drivers and itinerant workers they serve carry it to their own villages, according to the report by Mr. Thomas Wagner writing for the Associated Press. There are 43 million cases of sexually transmitted diseases reported each year in the country, according to the report. The HIV virus has been reported in all 25 states of India. Although the AIDS pandemic came to India later than most large countries, the National AIDS Control Organization estimates there are 1.62 million cases in the population, up 60% from 1993, according to the report. "AIDS is no longer just a problem of high-risk groups; it has spread to every area of India," Dr. P.R. Das Gupta of the national AIDS agency said in an interview. "So many people are migrating from their villages in search of jobs that this epidemic is spreading very fast." PMID:12288039

1994-08-01

211

Optics for machine vision  

NASA Astrophysics Data System (ADS)

Current developments in manufacturing technologies have caused a demand for automated inspection and assembly tools. A key requirement regarding such tools is related to machine vision. The term 'machine vision', as used in this discussion, includes any automated acquisition of information via optical sensors. The primary information to be sought with vision systems is spatial information. The normal detection scheme provides all but one of the generally desired variables. The variable not provided is the longitudinal position variable. Information regarding this variable is called 'range information'. The present investigation is mainly concerned with the means of acquiring the range variable. Attention is given to geometric range measurement techniques, time-of-flight range measurement techniques, interferometric techniques, and diffraction range measurement techniques.

Strand, T. C.

1984-01-01

212

The Variable Machine  

NSDL National Science Digital Library

This lesson from Illuminations provides an introduction to the use of variables, and develops students' algebraic thinking. Students create variable machines to discover the value of words by assigning each letter of the alphabet a unique number value. Learning objectives, a materials list, a pdf file of the student worksheet, an instructional plan, questions for the students, assessment options, extensions, and teacher reflections are provided.

2008-01-01

213

Regularized Extreme Learning Machine  

Microsoft Academic Search

Extreme learning machine proposed by Huang G-B has attracted many attentions for its extremely fast training speed and good generalization performance. But it still can be considered as empirical risk minimization theme and tends to generate over-fitting model. Additionally, since ELM doesn't considering heteroskedasticity in real applications, its performance will be affected seriously when outliers exist in the dataset. In

Wanyu Deng; Qinghua Zheng; Lin Chen

2009-01-01

214

Can machines be conscious?  

Microsoft Academic Search

Would you sell your soul on eBay? Right now, of course, you can't. But in some quarters it is taken for granted that within a generation, human beings-including you, if you can hang on for another 30 years or so-will have an alternative to death: being a ghost in a machine. You'll be able to upload your mind-your thoughts, memories,

Christof Koch; Giulio Tononi

2008-01-01

215

Development of reconfigurable machines  

Microsoft Academic Search

This paper summarizes our survey on the development of reconfigurable machines (RMs). The goals of this survey were to (i)\\u000a clarify the needs and drivers to develop the RMs, (ii) define the academic and practical issues involved in the development\\u000a of RMs, (iii) learn the state of the art of the R&D on design methodologies of the RMs, and (iv)

Z. M. Bi; Sherman Y. T. Lang; M. Verner; P. Orban

2008-01-01

216

Simple Machine Science Centers  

NSDL National Science Digital Library

One solution to the common challenge of teaching physical science for teachers who are not confident with the subject matter or comfortable with the material is inquiry based science centers. Science centers can engage students; accommodate different learning styles and individual interests; help students become independent and confident learners; and encourage social skills among students. One third-grade teacher worked with students as they completed activities at learning centers during a week-long unit on simple machines.

Chessin, Debby

2007-02-01

217

CNC electrical discharge machining centers  

SciTech Connect

Computer numerical control (CNC) electrical discharge machining (EDM) centers were investigated to evaluate the application and cost effectiveness of establishing this capability at Allied-Signal Inc., Kansas City Division (KCD). In line with this investigation, metal samples were designed, prepared, and machined on an existing 15-year-old EDM machine and on two current technology CNC EDM machining centers at outside vendors. The results were recorded and evaluated. The study revealed that CNC EDM centers are a capability that should be established at KCD. From the information gained, a machine specification was written and a shop was purchased and installed in the Engineering Shop. The older machine was exchanged for a new model. Additional machines were installed in the Tool Design and Fabrication and Precision Microfinishing departments. The Engineering Shop machine will be principally used for the following purposes: producing deep cavities in small corner radii, machining simulated casting models, machining difficult-to-machine materials, and polishing difficult-to-hand polish mold cavities. 2 refs., 18 figs., 3 tabs.

Jaggars, S.R.

1991-10-01

218

Electromechanical Battery, Electrical Machines Mass Functions Analysis  

NASA Astrophysics Data System (ADS)

In this paper different types of electrical machines in electromechanical battery, were described. The most known manufactured battery data is composed. Three types of machines: synchronous machine with salient poles and electromagnetic excitation, with permanent magnets on rotor and reluctance synchronous machine were analyzed. For all types of machines, mass is function of general geometrical size of magnetic system and machines electrical power.

Podgornovs, Andrejs; Sipovics, Anton

2011-01-01

219

BASIC CONDITIONS OF PROPER PART SURFACE GENERATING WHILE MACHINING ON CONVENTIONAL MACHINE TOOL  

Microsoft Academic Search

Machining of the part surface on the conventional machine tool sometimes presents geometrical problems that are not envisioned in classical geometry of surfaces. This paper presents definition and illustration of the basic conditions of proper part surface generating while machining on conventional machine tool, i.e. on turning machine tool, on milling machine tool, on machine tool for gear manufacturing operations

Stepan P. Radzevich

1999-01-01

220

15. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

15. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to northeast (90mm lens). The arched cutouts in the bottom chords of the roof trusses were necessary to provide clearance for the smokestacks of steam locomotives, and also mark the location of the former inspection pit in the floor (now filled in and covered by a new concrete floor). - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

221

A high speed machining algorithm for CNC machine tools  

Microsoft Academic Search

This paper introduces a high speed machining algorithm based on a look-ahead interpolation technique for the machining of 3D surface obtained by a CAD\\/CAM system. Generally, specification of CNC system for high speed machining requires an additional hardware and it burdens end users with additional cost. The purpose of this research is to develop the low cost CNC controller having

Guk-Chan Han; Dong-II Kim; Hyo-Gyu Kim; Kibeohn Nam; Byeong-Kap Choi; Sung-Kwun Kim

1999-01-01

222

Support vector machine in machine condition monitoring and fault diagnosis  

NASA Astrophysics Data System (ADS)

Recently, the issue of machine condition monitoring and fault diagnosis as a part of maintenance system became global due to the potential advantages to be gained from reduced maintenance costs, improved productivity and increased machine availability. This paper presents a survey of machine condition monitoring and fault diagnosis using support vector machine (SVM). It attempts to summarize and review the recent research and developments of SVM in machine condition monitoring and diagnosis. Numerous methods have been developed based on intelligent systems such as artificial neural network, fuzzy expert system, condition-based reasoning, random forest, etc. However, the use of SVM for machine condition monitoring and fault diagnosis is still rare. SVM has excellent performance in generalization so it can produce high accuracy in classification for machine condition monitoring and diagnosis. Until 2006, the use of SVM in machine condition monitoring and fault diagnosis is tending to develop towards expertise orientation and problem-oriented domain. Finally, the ability to continually change and obtain a novel idea for machine condition monitoring and fault diagnosis using SVM will be future works.

Widodo, Achmad; Yang, Bo-Suk

2007-08-01

223

Shaft drilling machine  

SciTech Connect

A shaft drilling machine has a circularly moving drilling head. The drilling head is angularly oriented with respect to the longitudinal axis of the shaft sought to be drilled. Loosened material is transported from the lower portion of the shaft by pickup means, moving with the drilling head, and taken to the upper portion of the angularly oriented bottom of the shaft, whereupon the loosened material or borings slide, by gravity, to a centrally located vertical conveyor mechanism for final removal of the material or borings from the shaft.

Hennecke, J.; Horst, H.; Podellek, H.

1984-11-20

224

Linear Function Machine  

NSDL National Science Digital Library

In this activity, students plug values into a function to see what the output is for that function. Then based on that information, they have to guess the coefficient and constant for a linear function. This activity allows students to explore linear functions and what input values are useful to figuring out the linear function performed by the function machine. This activity includes supplemental materials, including background information about the topics covered, a description of how to use the application, and exploration questions for use with the java applet.

2010-01-01

225

CENTRIFUGAL CASTING MACHINE  

DOEpatents

A device is described that is specifically designed to cast uraniumn fuel rods in a vacuunn, in order to obtain flawless, nonoxidized castings which subsequently require a maximum of machining or wastage of the expensive processed material. A chamber surrounded with heating elements is connected to the molds, and the entire apparatus is housed in an airtight container. A charge of uranium is placed in the chamber, heated, then is allowed to flow into the molds While being rotated. Water circulating through passages in the molds chills the casting to form a fine grained fuel rod in nearly finished form.

Shuck, A.B.

1958-04-01

226

Ski repairing machine  

US Patent & Trademark Office Database

An apparatus for grinding the base of an alpine ski, comprising a frame, a reciprocating carriage mounted on the frame and being adapted to receive a ski, a base grinding tool mounted to the frame for engagement with the base of the ski, the movement of the carriage causing engagement between the grinding tool and the ski base in successive grinding strokes. The machine also comprises a pressure control device in operative relation to the grinding tool for maintaining the grinding pressure on the base generally constant during a grinding stroke.

Mario; Petrin (LaSalle, Quebec, CA); Blaise; Petrin (Montreal, Quebec, CA)

1989-11-21

227

The Intimate Machine  

NSDL National Science Digital Library

This episode of the PBS television show Scientific American Frontiers, entitled "The Intimate Machine," aired on October 22, 2002. The show is divided into four segments. Interactive, animated computer characters created at the MIT Media Lab are the focus of the first part. The second shows a virtual dog that, just like a real pet, can be trained. Advanced monitoring devices that recognize human emotions are examined in the third segment, while the final part demonstrates a furry robot that emulates human emotions. In addition to being able to view the hour-long episode in streaming video on this site, users can also browse certain Web features.

2002-01-01

228

MAN-MACHINE VOICE COMMUNICATION  

Microsoft Academic Search

Speech is our most natural way of communicating. Effective integration of speech into man-machine communication depends on the nature of the user interface and application. This is the justification for grouping together the topics of voice-enabled interactivity and speech engineering together in this chapter. A man-machine interface can be defined as the mediator between users and machines. It is a

Andrzej Drygajlo

229

Intelligible machine learning with malibu  

Microsoft Academic Search

malibu is an open-source machine learning work-bench developed in C\\/C++ for high-performance real-world applications, namely bioinformatics and medical informatics. It leverages third-party machine learning implementations for more robust bug free software. This workbench handles several well-studied supervised machine learning problems including classification, regression, importance-weighted classification and multiple-instance learning. The malibu interface was designed to create reproducible experiments ideally run in

Robert E. Langlois; Hui Lu

2008-01-01

230

Ultraprecision machining of nitrocarburized steels  

NASA Astrophysics Data System (ADS)

Ultra precision machining processes generate surfaces in optical quality and with sub-micron form accuracies. These specifications can be realised by applying single crystal diamond tools with nanometric edge sharpness. Typical workpiece materials are non-ferrous metals which can be machined without significant tool wear. But for optical mould making these materials have disadvantages regarding tool life in injection moulding of plastics. Alternatively diamond cutting of thermo-chemically treated steel is a new way to machine hardened steel moulds. This paper presents results from the machining of two thermo-chemically treated steel alloys. Analyzing and evaluating the machining results regarding surface integrity will lead to recommendations for the ultra precision machining of nitrocarburized steels. The influence of the thermo-chemically generated compound layer composition on surface quality and tool wear has been investigated. Therefore, diamond turning experiments have been carried out on a five axes ultra precision lathe in different depth beneath the surface. Here, both steels can be machined in optical surface quality with a surface roughness Sa < 10 nm, but the achievable surface quality strongly depends on the depth beneath the surface in which the machining takes place. The results show that with increasing depth beneath the surface the roughness values increase as well. Therefore, diamond machining at the edge between compound layer and diffusion layer has to be avoided to gain the best possible surface quality.

Osmer, J.; Gläbe, R.; Riemer, O.; Brinksmeier, E.

2010-05-01

231

Internet Archive Wayback Machine  

NSDL National Science Digital Library

The Internet Archive is the "parent" site for two sites previously reviewed in the Scout Report, Election 2000 (see the July 13, 2001 Scout Report) and September11.archive.org (see the October 19, 2001 Scout Report). The Archive has been cataloging Webpages since its inception in 1996, and for their fifth anniversary has opened the archive to the public by launching their "Wayback Machine." To operate the "Machine," users type a URL into the search box, which will call up dated, archived pages of the site. The Internet Archive holds ten billion Webpages, making it the largest known database. Since announcing public access to the overall database, the site has experienced a great deal of traffic. They are in the process of adding servers, but users should be warned that, in the meantime, access may be tricky. The Internet Archive is a nonprofit, which has received funding from a number of sources including the Library of Congress and the National Science Foundation.

2001-01-01

232

Interaction with Machine Improvisation  

NASA Astrophysics Data System (ADS)

We describe two multi-agent architectures for an improvisation oriented musician-machine interaction systems that learn in real time from human performers. The improvisation kernel is based on sequence modeling and statistical learning. We present two frameworks of interaction with this kernel. In the first, the stylistic interaction is guided by a human operator in front of an interactive computer environment. In the second framework, the stylistic interaction is delegated to machine intelligence and therefore, knowledge propagation and decision are taken care of by the computer alone. The first framework involves a hybrid architecture using two popular composition/performance environments, Max and OpenMusic, that are put to work and communicate together, each one handling the process at a different time/memory scale. The second framework shares the same representational schemes with the first but uses an Active Learning architecture based on collaborative, competitive and memory-based learning to handle stylistic interactions. Both systems are capable of processing real-time audio/video as well as MIDI. After discussing the general cognitive background of improvisation practices, the statistical modelling tools and the concurrent agent architecture are presented. Then, an Active Learning scheme is described and considered in terms of using different improvisation regimes for improvisation planning. Finally, we provide more details about the different system implementations and describe several performances with the system.

Assayag, Gerard; Bloch, George; Cont, Arshia; Dubnov, Shlomo

233

Shape regression machine.  

PubMed

We present a machine learning approach called shape regression machine (SRM) to segmenting in real time an anatomic structure that manifests a deformable shape in a medical image. Traditional shape segmentation methods rely on various assumptions. For instance, the deformable model assumes that edge defines the shape; the Mumford-Shah variational method assumes that the regions inside/outside the (closed) contour are homogenous in intensity; and the active appearance model assumes that shape/appearance variations are linear. In addition, they all need a good initialization. In contrast, SRM poses no such restrictions. It is a two-stage approach that leverages (a) the underlying medical context that defines the anatomic structure and (b) an annotated database that exemplifies the shape and appearance variations of the anatomy. In the first stage, it solves the initialization problem as object detection and derives a regression solution that needs just one scan in principle. In the second stage, it learns a nonlinear regressor that predicts the nonrigid shape from image appearance. We also propose a boosting regression approach that supports real time segmentation. We demonstrate the effectiveness of SRM using experiments on segmenting the left ventricle endocardium from an echocardiogram of an apical four chamber view. PMID:17633685

Zhou, Shaohua Kevin; Comaniciu, Dorin

2007-01-01

234

Zeeman Catastrophe Machine Model  

NSDL National Science Digital Library

The Zeeman Catastrophe Machine Model shows the rotational motion of wheel that is free to rotate but is connected to two elastics, one which is free to move in the xy-plane, and one that is set a fixed distance d away. The model initiates in a steady state where there is no rotational velocity and the magnitude of the tensions in the two elastics are equal. The user can drag the blue point to change the torque on the wheel, or they can enter values in the input fields on the top panel. The user can also change the angle theta, the coefficient of dampening, the spring constant, the moment of inertia. The Zeeman Catastrophe Machine Model was developed as a final project in a sophomore-level Computational Physics course (Phy 200) using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the jar file will run the program if Java is installed. You can modify this simulation if you have EJS installed by right-clicking within the map and selecting "Open Ejs Model" from the pop-up menu item.

Glasmann, Andreu

2012-06-26

235

Linked-state machines  

SciTech Connect

Procedures for the analysis and design of linked state machines are developed in this report. These procedures are for the study of the finite state nondeterministic, and possibly concurrent, processes that arise in models of communication protocols, digital hardware, and computer programs. Linked state machines (LSMs) are currently used for description (for example, specification) of protocols and hardware but are not widely used for analysis and design. This study develops tools for analysis and design by formulating mathematical descriptions of LSMs, developing methods for generating different representations of LSMs, and developing a method of reduction that allows the behavior of a selected part of an LSM to be modeled. The relationship between LSMs and Petri nets is also studied. In addition, conditions that allow the synthesis of speed independent LSMs are stated and proved. The procedures developed for the analysis and design of LSMs are mostly algorithmic and can be applied to the (hand) analysis of (some) systems with several hundred states. These procedures also will serve as a basis for computer-aided analysis and design of LSMs.

Knudsen, H.K.

1983-07-01

236

A correlation between machining parameters and machinability in EDM  

Microsoft Academic Search

These investigations were carried out to determine possible correlations between the EDM machining parameters (pulse on, current) and the machineability components (stock removal, electrode wear, overcut, surface finish and surface integrity). The surface integrity of the component depends on its conformity to tolerance, its surface finish and the metallurgical subsurface characteristics. The present work indicates a correlation between the overcut

S. K. BHATTACHARYYA; M. K. EL-MENSHAWY; S. GARBER; J. WALLBANK

1981-01-01

237

Technology of machine tools. Volume 5. Machine tool accuracy  

Microsoft Academic Search

The Machine Tool Task Force (MTTF) was formed to characterize the state of the art of machine tool technology and to identify promising future directions of this technology. This volume is one of a five-volume series that presents the MTTF findings; reports on various areas of the technology were contributed by experts in those areas.

Hocken

1980-01-01

238

Standardized Curriculum for Machine Tool Operation/Machine Shop.  

ERIC Educational Resources Information Center

|Standardized vocational education course titles and core contents for two courses in Mississippi are provided: machine tool operation/machine shop I and II. The first course contains the following units: (1) orientation; (2) shop safety; (3) shop math; (4) measuring tools and instruments; (5) hand and bench tools; (6) blueprint reading; (7)…

Mississippi State Dept. of Education, Jackson. Office of Vocational, Technical and Adult Education.

239

Positioning cloud computing in machine to machine business models  

Microsoft Academic Search

The concept and implementation of cloud computing have attracted more and more attention from industry and research community. In this paper, we explore how the industry moves beyond the buzzword of cloud computing and put it into the actual business benefits. Machine to machine (M2M) is selected as the field of implementation as it is hailed as the next big

Arkav Juliandri; Meis Musida; Supriyadi

2012-01-01

240

Standardized Curriculum for Machine Tool Operation/Machine Shop.  

ERIC Educational Resources Information Center

Standardized vocational education course titles and core contents for two courses in Mississippi are provided: machine tool operation/machine shop I and II. The first course contains the following units: (1) orientation; (2) shop safety; (3) shop math; (4) measuring tools and instruments; (5) hand and bench tools; (6) blueprint reading; (7)…

Mississippi State Dept. of Education, Jackson. Office of Vocational, Technical and Adult Education.

241

Machining of uranium and uranium alloys  

SciTech Connect

Uranium and uranium alloys can be readily machined by conventional methods in the standard machine shop when proper safety and operating techniques are used. Material properties that affect machining processes and recommended machining parameters are discussed. Safety procedures and precautions necessary in machining uranium and uranium alloys are also covered. 30 figures.

Morris, T.O.

1981-12-14

242

Shortwall mining machine  

SciTech Connect

The invention provides a shortwall mining machine comprising an assembly, which preferably is articulated and has a protective canopy. The assembly is arranged parallel to a shortwall mineral face, and a cutter is hauled along a guide on the assembly to cut the face. As the face is cut the assembly is moved towards the face by use of rams connected between the assembly and stay units located in roadways adjacent the face. The cutter may be a scraper bucket or a plough, and is hauled across the face by either one motor in one of the roadways, or by two motors, one located in each roadway. The cutter may be steered by use of jacks on the assembly located in the roadways.

MacRae, R.L.

1980-04-08

243

Mineral mining machines  

SciTech Connect

A mineral mining machine incorporates a guideway defining runs for a cutter chain which carries cutter picks. The guideway is movable as a whole and is formed with runs for the chain. The runs of the guideway are of generally l-shaped cross section, although the invention is not so limited, and have relatively outer and relatively inner supporting guide surfaces for the cutter chain. The relatively inner guide surface is positioned to the rear of the drive member, E.G. A sprocket, for the chain, I.E. Behind the center line of the chain in the cutting direction. The guide surfaces are continuous around the whole of the guideway thus providing continuous support for the chain during the whole of its movement around the guideway.

Higgs, R.H.; Nicholls, J.T.; Oven, T.

1980-06-24

244

Quantum adiabatic machine learning  

NASA Astrophysics Data System (ADS)

We develop an approach to machine learning and anomaly detection via quantum adiabatic evolution. This approach consists of two quantum phases, with some amount of classical preprocessing to set up the quantum problems. In the training phase we identify an optimal set of weak classifiers, to form a single strong classifier. In the testing phase we adiabatically evolve one or more strong classifiers on a superposition of inputs in order to find certain anomalous elements in the classification space. Both the training and testing phases are executed via quantum adiabatic evolution. All quantum processing is strictly limited to two-qubit interactions so as to ensure physical feasibility. We apply and illustrate this approach in detail to the problem of software verification and validation, with a specific example of the learning phase applied to a problem of interest in flight control systems. Beyond this example, the algorithm can be used to attack a broad class of anomaly detection problems.

Pudenz, Kristen L.; Lidar, Daniel A.

2013-05-01

245

Machine assisted histogram classification  

NASA Astrophysics Data System (ADS)

LHCb is one of the four major experiments under completion at the Large Hadron Collider (LHC). Monitoring the quality of the acquired data is important, because it allows the verification of the detector performance. Anomalies, such as missing values or unexpected distributions can be indicators of a malfunctioning detector, resulting in poor data quality. Spotting faulty or ageing components can be either done visually using instruments, such as the LHCb Histogram Presenter, or with the help of automated tools. In order to assist detector experts in handling the vast monitoring information resulting from the sheer size of the detector, we propose a graph based clustering tool combined with machine learning algorithm and demonstrate its use by processing histograms representing 2D hitmaps events. We prove the concept by detecting ion feedback events in the LHCb experiment's RICH subdetector.

Benyó, B.; Gaspar, C.; Somogyi, P.

2010-04-01

246

Imbalance rotating machine balancing  

NASA Astrophysics Data System (ADS)

Imbalance analysis is essential in the rotating machine. However, some problems still remain in the aspects of computational efficiency and accuracy. In the present paper, a new method was proposed for estimating the mass imbalance of a rotating shaft by using the vibration signals. This is a new method for the detection of a mass imbalance and its phase position. Based on the signal processing with FFT, an estimator was designed to detect the mass of imbalance. And an improved Lissajous diagram was also introduced with statistical analysis, which make it possible to compute the phase position of the mass imbalance efficiently and arranged at a certain location of the shaft. The proposed method was demonstrated and validated through several test examples.

Su, Hua; Choi, Han-Soo; Chong, Kil T.

2005-12-01

247

Agents for absorption machines  

US Patent & Trademark Office Database

The present invention proposes adding an alkaline solution or a mixture of two or more alkaline solutions to the agent system of absorption machines operating with ammonia or methylamine as the agent and water as the solvent. This addition of an alkaline solution or an alkaline solution mixture has a number of advantageous effects. These are, i.a. 1. The dissolving respectively expelling heat of the agent is reduced, raising the output figure. 2. The agent vapor generated is very pure. A dephlegmator is obviated. 3. The alkaline solution makes steel surfaces inert when sealed from air and in a high vaccum, thereby obviating corrosion inhibitors. 4. The viscosity of the solvent is reduced, decreasing pump operation.

1998-03-10

248

Machine Accounting. An Instructor's Guide.  

ERIC Educational Resources Information Center

|Designed to prepare students to operate the types of accounting machines used in many medium-sized businesses, this instructor's guide presents a full-year high school course in machine accounting covering 120 hours of instruction. An introduction for the instructor suggests how to adapt the guide to present a 60-hour module which would be…

Gould, E. Noah, Ed.

249

The Reactances of Synchronous Machines  

Microsoft Academic Search

Until somewhat recently, synchronous machine theory has been satisfied with a relatively few characteristic constants, or reactances, in terms of which the behavior of machines has been calculated. Present theory, however, requires many more coefficients. There are now generally recognized two values each of leakage, synchronous, and transient reactance which correspond to the two symmetrical axes of magnetization of the

R. H. Park; B. L. Robertson

1928-01-01

250

Control of synchronous reluctance machines  

Microsoft Academic Search

This work develops a comprehensive approach to the control of inverter-fed synchronous reluctance machines (SYNCREL), based on the machine's ideal model. From the theory a control simulation is designed. Simulation and experimental results are presented. The effects of saturation and iron losses are briefly considered

R. E. Betz; R. Lagerquist; M. Jovanovic; T. J. E. Miller; R. H. Middleton

1993-01-01

251

Providing Machine Tractable Dictionary Tools  

Microsoft Academic Search

Machine readable dictionaries (mrds) contain knowledge about language and the world essential for tasks in natural language processing (nlp). However, this knowledge, collected and recorded by lexicographers for human readers, is not presented in a manner for mrds to be used directly for NLP tasks. What is badly needed are machine tractable dictionaries (mtds): mrds transformed into a format usable

Yorick Wilks; Dan Fass; Cheng-ming Guo; James E. McDonald; Tony Plate; Brian M. Slator

252

Machine Shop: Scope and Sequence.  

ERIC Educational Resources Information Center

Intended for use by all machine shop instructors in the Metropolitan Nashville Public Schools, this guide provides a sequential listing of course content and scope. A course description provides a brief overview of the content of the courses offered in the machine shop program. General course objectives are then listed. Outlines of the course…

Nashville - Davidson County Metropolitan Public Schools, TN.

253

Cleaning of Free Machining Brass  

SciTech Connect

We have investigated four brightening treatments proposed by two cleaning vendors for cleaning free machining brass. The experimental results showed that none of the proposed brightening treatments passed the swipe test. Thus, we maintain the recommendation of not using the brightening process in the cleaning of free machining brass for NIF application.

Shen, T

2005-12-29

254

Recycling TATB PBX. [Machining scrap  

Microsoft Academic Search

The feasibility of recycling IHE has been successfully demonstrated on a large scale by processing over 750 kg of machining scrap. The content of machine cuttings in the recycled PBX lots was 50, 75, and 100%. Physical strengths were generally above normal and tensile strains were 0.29% or better.

A. G. Osborn; T. L. Stallings; H. D. Johnson

1978-01-01

255

Dry machinability of aluminum alloys  

Microsoft Academic Search

Adverse effects of the use of cutting fluids and environmental concerns with regard to cutting fluid disposability is compelling industry to adopt Dry or near Dry Machining, with the aim of eliminating or significantly reducing the use of metal working fluids. Pending EPA regulations on metal cutting, dry machining is becoming a hot topic of research and investigation both in

I. Shareef; M. Natarajan; O. O. Ajayi

2005-01-01

256

The Machine Scoring of Writing  

ERIC Educational Resources Information Center

|This article provides an introduction to the kind of computer software that is used to score student writing in some high stakes testing programs, and that is being promoted as a teaching and learning tool to schools. It sketches the state of play with machines for the scoring of writing, and describes how these machines work and what they do.…

McCurry, Doug

2010-01-01

257

Future Directions for Machine Learning  

Microsoft Academic Search

Summary In this paper we discuss possible future directions of research for soft computing in the context of artificial intelligence machine learning. Fundamental issues are presented with basic ideas emphasised rather than detailed accounts of algorithms and procedures. The use of fuzzy sets for machine learning, computer intelligence and creativity are discussed in relation to the central problems of creating

J. F. Baldwin

258

Privacy: A Machine Learning View  

Microsoft Academic Search

The problem of disseminating a data set for machine learning while controlling the disclosure of data source identity is described using a commuting diagram of functions. This formalization is used to present and analyze an optimization problem balancing privacy and data utility requirements. The analysis points to the application of a generalization mechanism for maintaining privacy in view of machine

Staal A. Vinterbo

2004-01-01

259

Diagnostics of Mobile Work Machines.  

National Technical Information Service (NTIS)

In this research note, we take a look at the field of mobile work machine diagnostics. The perspective by the authors is limited by the research project (KODIE) behind this research. However, we have tried to provide generic guidelines for machine builder...

I. Aho J. Alanen J. Peltola K. Haataja O. Laurila

2006-01-01

260

OPEN ARCHITECTURES FOR MACHINE CONTROL  

Microsoft Academic Search

A major impediment to improving the performance and functionality of machine tools is the limited access that users or third parties have to the internals of the machine controller. This limit has suppressed the emergence of a community of third-party vendors who could provide a wide range of applications at competitive prices. The result is that users are often faced

Frederick M. Proctor; Brad Damazo; Charles Yang; Simon Frechette

261

Metal Cutting Machines in Malaya.  

National Technical Information Service (NTIS)

In general the items likely to be in greatest demand in Malaysia are general purpose metal cutting machines likely to be used in small general purpose workshops. The machines should be robust and any sub assembles which are difficult to repair should be e...

1965-01-01

262

Lens Centering and Beveling Machine.  

National Technical Information Service (NTIS)

The machine operates continuously to recieve a series of blank lenses and functions automatically to center each lens and pass it through grinding stations. The machine includes a number of spindle pairs each including a lower spindle fixed to an index ta...

W. E. Soong R. E. Miller J. Des Jardins L. H. Sharper

1964-01-01

263

Machine Learning for Intelligent Systems  

Microsoft Academic Search

Recent research in machine learning has focused on su- pervised induction for simple classification and rein- forcement learning for simple reactive behaviors. In the process, the field has become disconnected from AI's original goal of creating complete intelligent agents. In this paper, I review recent work on machine learning for planning, language, vision, and other topics that runs counter to

Pat Langley

1997-01-01

264

Boltzmann Machines and their Applications  

Microsoft Academic Search

In this paper we present a formal model of the Boltzmann machine and a discussion of two different applications of the model, viz. (i) solving combinatorial optimization problems and (ii) carrying out learning tasks. Numerical results of computer simulations are presented to demonstrate the characteristic features of the Boltzmann machine.

Emile H. L. Aarts; Jan H. M. Korst

1987-01-01

265

CRYOGENIC MACHINING OF KEVLAR COMPOSITES  

Microsoft Academic Search

Previous attempts to machine Kevlar aramid fibre reinforced plastics (KFRP) with conventional cutting tools have proven to be extremely difficult. This has somewhat restricted the material's usage, often negating the advantages of its high strength to weight ratio and fatigue tolerance. The present paper describes a novel technique of machining KFRP under cryogenic conditions with remarkable results compared to those

D. Bhattacharyya; M. N. Allen; S. J. Mander

1993-01-01

266

The machinability of inconel 718  

Microsoft Academic Search

Inconel 718, a high strength, thermal resistant Nickel-based alloy, is mainly used in the aircraft industries. Due to the extreme toughness and work hardening characteristics of the alloy, the problem of machining Inconel 718 is one of ever-increasing magnitude, This paper discusses the effect of cutting conditions on the machinability of Inconel 718. Flank wear of the inserts, workpiece surface

M. Rahman; W. K. H. Seah; T. T. Teo

1997-01-01

267

Man and Machines: Three Criticisms.  

ERIC Educational Resources Information Center

|As machines have become a more common part of daily life through the passage of time, the idea that the line separating man and machine is slowly fading has become more popular as well. This paper examines three critics of change through their most famous works. One of the most popular views of Mary Shelley's "Frankenstein" is that it is a…

Schneider, Edward F.

268

Providing machine tractable dictionary tools  

Microsoft Academic Search

Machine readable dictionaries (Mrds) contain knowledge about language and the world essential for tasks in natural language processing (Nlp). However, this knowledge, collected and recorded by lexicographers for human readers, is not presented in a manner for Mrds to be used directly for Nlp tasks. What is badly needed are machine tractable dictionaries (Mtds): Mrds transformed into a format usable

Yorick Wilks; Dan Fass; Cheng-ming Guo; James E. Mcdonald; Tony Plate; Brian M. Slator

1990-01-01

269

Machinability of Stellite 6 hardfacing  

NASA Astrophysics Data System (ADS)

This paper reports some experimental findings concerning the machinability at high cutting speed of nickel-base weld-deposited hardfacings for the manufacture of hot tooling. The forging work involves extreme impacts, forces, stresses and temperatures. Thus, mould dies must be extremely resistant. The aim of the project is to create a rapid prototyping process answering to forging conditions integrating a Stellite 6 hardfacing deposed PTA process. This study talks about the dry machining of the hardfacing, using a two tips machining tool and a high speed milling machine equipped by a power consumption recorder Wattpilote. The aim is to show the machinability of the hardfacing, measuring the power and the tip wear by optical microscope and white light interferometer, using different strategies and cutting conditions.

Benghersallah, M.; Boulanouar, L.; Le Coz, G.; Devillez, A.; Dudzinski, D.

2010-06-01

270

A hybrid machining simulator based on predictive machining theory and neural network modelling  

Microsoft Academic Search

A machining simulation system based on a hybrid machining model integrating the predictive machining theory developed by Oxley and neural network models for predicting machining characteristic factors is presented in this paper. The model consists of two components, an analytical component and a neural network component. The analytical component uses Oxley's predictive machining theory, from which the essential machining characteristics

X. P Li; K Iynkaran; A. Y. C Nee

1999-01-01

271

A study on the machining-parameters optimization of wire electrical discharge machining  

Microsoft Academic Search

A suitable selection of machining parameters for the wire electrical discharge machining (WEDM) process relies heavily on the operators' technologies and experience because of their numerous and diverse range. Machining-parameters tables provided by the machine-tool builder can not meet the operators' requirements, since for an arbitrary desired roughness of the machining surface, they do not provide the optimal machining conditions.

Y. S. Liao; J. T. Huang; H. C. Su

1997-01-01

272

Boltzmann Machine: A Survey and Generalization  

National Technical Information Service (NTIS)

A tutorial is presented describing a general machine learning theory which spawns a class of energy minimizing machines useful in model identification, optimization, and associative memory. Special realizations of the theory include the Boltzmann machine ...

M. D. Eggers

1988-01-01

273

New, Varying-Capacitance, Electrical Machine,  

National Technical Information Service (NTIS)

The research demonstrated that introduction of dielectric material into the working gap of a varying capacitance, rotating machine, in combination with a novel arrangement of machine elements, increased the power of the machine by an order of magnitude. U...

S. F. Philp

1983-01-01

274

Research in Information Science & Technology: Machine Vision.  

National Technical Information Service (NTIS)

Machine Vision is fast becoming a key technology, and advances in machine vision are occurring along several fronts. This report outlines the progress being made at Columbia University in developing new machine vision algorithms and applications, and the ...

P. Allen J. Kender S. Nayar T. Boult

1998-01-01

275

29 CFR 1917.151 - Machine guarding.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machine guarding. 1917.151 Section 1917...Operations and Equipment § 1917.151 Machine guarding. (a) Definition...b) General. (1) Danger zones on machines and equipment used by employees...

2013-07-01

276

Literature Survey on Direct Energy Machining.  

National Technical Information Service (NTIS)

The mechanism of various direct energy machining processes is presented. Machine requirements are discussed. Direct energy machining processes, at the present state of the art, are a breakthrough to the solution of shaping of materials which cannot be mac...

C. R. Hyland

1964-01-01

277

48 CFR 908.7103 - Office machines.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Office machines. 908.7103 Section 908.7103 Federal...Acquisition of Special Items 908.7103 Office machines. Acquisitions of office machines by DOE offices and its authorized...

2011-10-01

278

48 CFR 908.7103 - Office machines.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Office machines. 908.7103 Section 908.7103 Federal...Acquisition of Special Items 908.7103 Office machines. Acquisitions of office machines by DOE offices and its authorized...

2012-10-01

279

Machine Process Capability Information Through Six Sigma.  

National Technical Information Service (NTIS)

A project investigating details concerning machine process capability information and its accessibility has been conducted. The thesis of the project proposed designing a part (denoted as a machine capability workpiece) based on the major machining featur...

M. F. Lackner

1998-01-01

280

Remotely Operated Subsea Machine Tool System.  

National Technical Information Service (NTIS)

Statoil and SINTEF, Norway, have jointly developed a concept for a remotely operated subsea machine tool system for deepwater precision machining and inspection. The system is designed for water depths to 400 meters. The machine tool system is operated th...

R. E. Husebye H. P. Jenssen D. Velund

1990-01-01

281

Diamond Turning on Advanced Machine Tool Prototypes.  

National Technical Information Service (NTIS)

Specular-quality metal mirrors are being machined for use in laser optical systems. The fabrication process incorporates special quality diamond tools and specially constructed turning machines. The machines are controlled by advanced control techniques a...

J. B. Arnold P. J. Steger

1975-01-01

282

Machine Vision Online: Tips for Successfully Applying Machine Vision  

NSDL National Science Digital Library

This Web site provides many articles and educational resources related to machine vision. Most of the materials come from companies with significant experience with the topic, including Ford Motor Company, Adept Technology, and many others. Visitors to the site can read about the basics of machine vision and learn how to successfully implement and design a system. Inexperienced people should start with the Strategies for New Users section, which contains a glossary of terms and a couple brief introductions. The Technical Papers section has information on the various components of a machine vision system, and Applications by Industry has case studies of several different operations.

283

Cryogenic machining of Kevlar composites  

NASA Astrophysics Data System (ADS)

Previous attempts to machine Kevlar aramid fibre reinforced plastics (KFRP) with coventional cutting tools have proven to be extremely difficult. This has somewhat restricted the material's usage, often negating the advantages of its high strength-to-weight ratio and fatigue tolerance. The present paper describes a novel technique of machining KFRP under cryogenic conditions with remarkable results compared to those obtained at ambient temperatures. The investigation carried out with turning operation shows dramatic improvement of the tool performance and surface quality. The effects of various machining parameters such as workpiece temperature, cutting speed, and tool geometry on the machinability of KFRP are presented and analyzed. It appears that care is necessary to judge the tool life as the typical tool wear growth and surface finish or cutting force may produce contradictory results. It is also suggested that, for KFRP, surface finish of the machined workpiece is a very good criterion to determine the tool life. To aid the understanding of the machining mechanics, a microscopic investigation of the cutting zone while actually machining a testpiece at ambient and cryogenic temperatures is also reported.

Bhattacharyya, D.; Allen, M. N.; Mander, S. J.

284

Machine vision for digital microfluidics  

NASA Astrophysics Data System (ADS)

Machine vision is widely used in an industrial environment today. It can perform various tasks, such as inspecting and controlling production processes, that may require humanlike intelligence. The importance of imaging technology for biological research or medical diagnosis is greater than ever. For example, fluorescent reporter imaging enables scientists to study the dynamics of gene networks with high spatial and temporal resolution. Such high-throughput imaging is increasingly demanding the use of machine vision for real-time analysis and control. Digital microfluidics is a relatively new technology with expectations of becoming a true lab-on-a-chip platform. Utilizing digital microfluidics, only small amounts of biological samples are required and the experimental procedures can be automatically controlled. There is a strong need for the development of a digital microfluidics system integrated with machine vision for innovative biological research today. In this paper, we show how machine vision can be applied to digital microfluidics by demonstrating two applications: machine vision-based measurement of the kinetics of biomolecular interactions and machine vision-based droplet motion control. It is expected that digital microfluidics-based machine vision system will add intelligence and automation to high-throughput biological imaging in the future.

Shin, Yong-Jun; Lee, Jeong-Bong

2010-01-01

285

HUMAN MACHINE COOPERATIVE TELEROBOTICS  

SciTech Connect

The remediation and deactivation and decommissioning (D&D) of nuclear waste storage tanks using telerobotics is one of the most challenging tasks faced in environmental cleanup. Since a number of tanks have reached the end of their design life and some of them have leaks, the unstructured, uncertain and radioactive environment makes the work inefficient and expensive. However, the execution time of teleoperation consumes ten to hundred times that of direct contact with an associated loss in quality. Thus, a considerable effort has been expended to improve the quality and efficiency of telerobotics by incorporating into teleoperation and robotic control functions such as planning, trajectory generation, vision, and 3-D modeling. One example is the Robot Task Space Analyzer (RTSA), which has been developed at the Robotics and Electromechanical Systems Laboratory (REMSL) at the University of Tennessee in support of the D&D robotic work at the Oak Ridge National Laboratory and the National Energy Technology Laboratory. This system builds 3-D models of the area of interest in task space through automatic image processing and/or human interactive manual modeling. The RTSA generates a task plan file, which describes the execution of a task including manipulator and tooling motions. The high level controller of the manipulator interprets the task plan file and executes the task automatically. Thus, if the environment is not highly unstructured, a tooling task, which interacts with environment, will be executed in the autonomous mode. Therefore, the RTSA not only increases the system efficiency, but also improves the system reliability because the operator will act as backstop for safe operation after the 3-D models and task plan files are generated. However, unstructured conditions of environment and tasks necessitate that the telerobot operates in the teleoperation mode for successful execution of task. The inefficiency in the teleoperation mode led to the research described as Human Machine Cooperative Telerobotics (HMCTR). The HMCTR combines the telerobot with robotic control techniques to improve the system efficiency and reliability in teleoperation mode. In this topical report, the control strategy, configuration and experimental results of Human Machines Cooperative Telerobotics (HMCTR), which modifies and limits the commands of human operator to follow the predefined constraints in the teleoperation mode, is described. The current implementation is a laboratory-scale system that will be incorporated into an engineering-scale system at the Oak Ridge National Laboratory in the future.

William R. Hamel; Spivey Douglass; Sewoong Kim; Pamela Murray; Yang Shou; Sriram Sridharan; Ge Zhang; Scott Thayer; Rajiv V. Dubey

2003-06-30

286

Boltzmann Machine for the Organization of Intelligent Machines.  

National Technical Information Service (NTIS)

In the present technological society, there is a major need to build machines that would execute intelligent tasks operating in uncertain environments with minimum interaction with a human operator. Although some designers have built smart robots, utilizi...

M. C. Moed G. N. Saridis

1989-01-01

287

Upgrading the capabilities of existing machine tools for precision machining  

SciTech Connect

A number of two-axis turning machines at the Oak Ridge Y-12 Plant have undergone upgrading as a means of meeting the needs for parts with tolerances that were more restrictive than the capability of the basic machine. The level of upgrading has ranged from changing a single machine characteristic to doing a complete overhaul of the slides, drives, spindle, and control system. The features available for the up-grading process include: tool setters, air bearing spindles and slides, pressurized oil bearing slides, electric dc torque motor drives, linear motor slide drives, eddy current spindle drives, laser feedback, vibration-isolation machine platforms, and computer numerical control (CNC) systems. Actual case histories are presented which show the levels of performance achieved with the various modifications. A discussion of the advantages and disadvantages of the various options is included.

Barkman, W.E.

1982-05-01

288

Slide system for machine tools  

DOEpatents

The present invention relates to a machine tool which permits the machining of nonaxisymmetric surfaces on a workpiece while rotating the workpiece about a central axis of rotation. The machine tool comprises a conventional two-slide system (X-Y) with one of these slides being provided with a relatively short travel high-speed auxiliary slide which carries the material-removing tool. The auxiliary slide is synchronized with the spindle speed and the position of the other two slides and provides a high-speed reciprocating motion required for the displacement of the cutting tool for generating a nonaxisymmetric surface at a selected location on the workpiece.

Douglass, S.S.; Green, W.L.

1980-06-12

289

Slide system for machine tools  

DOEpatents

The present invention relates to a machine tool which permits the machining of nonaxisymmetric surfaces on a workpiece while rotating the workpiece about a central axis of rotation. The machine tool comprises a conventional two-slide system (X-Y) with one of these slides being provided with a relatively short travel high-speed auxiliary slide which carries the material-removing tool. The auxiliary slide is synchronized with the spindle speed and the position of the other two slides and provides a high-speed reciprocating motion required for the displacement of the cutting tool for generating a nonaxisymmetric surface at a selected location on the workpiece.

Douglass, Spivey S. (Oak Ridge, TN); Green, Walter L. (Knoxville, TN)

1982-01-01

290

On Parallelism in Turing Machines  

Microsoft Academic Search

A model of parallel computation based on a generalization of nondeterminism in Turing machines is introduced. Complexity classes \\/\\/T(n)-TIME, \\/\\/L(n)-SPACE, \\/\\/LOGSPACE, \\/\\/PTIME, etc. are defined for these machines in a way analogous to T(n)-TIME, L(n)-SPACE, LOGSPACE, PTIME, etc. for deterministic machines. It is shown that, given appropriate honesty conditions, L(n)-SPACE ? \\/\\/L(n)2-TIME T(n)-TIME ? \\/\\/log T(n)-SPACE \\/\\/L(n)-SPACE ? exp L(n)-TIME

Dexter Kozen

1976-01-01

291

Upgrading a production machine tool for precision machining  

NASA Astrophysics Data System (ADS)

Precision machining technology is applied to an existing machine tool. A two axis, T-base lathe was retrofitted with air-bearing slides and spindle, laser interferometer feedback, electric drives, a vibration isolation base, and a computer numerical control system. The resulting contouring capability for a spherical part improved from 4 micron to 1.27 micron while the surface finish capability improved from approximately 0.23 microns to 0.1 microns peak to valley.

Barkman, W. E.; Woodard, L. M.

1981-12-01

292

Semismooth support vector machines.  

SciTech Connect

The linear support vector machine can be posed as a quadratic program in a variety of ways. In this paper, we look at a formulation using the two-norm for the misclassification error that leads to a positive definite quadratic program with a single equality constraint when the Wolfe dual is taken. The quadratic term is a small rank update to a positive definite matrix. We reformulate the optimality conditions as a semismooth system of equations using the Fischer-Burmeister function and apply a damped Newton method to solve the resulting problem. The algorithm is shown to converge from any starting point with a Q-quadratic rate of convergence. At each iteration, we use the Sherman-Morrison-Woodbury update formula to solve a single linear system of equations. Significant computational savings are realized as the inactive variables are identified and exploited during the solution process. Results for a 60 million variable problem are presented, demonstrating the effectiveness of the proposed method on a personal computer.

Ferris, M. C.; Munson, T. S.; Mathematics and Computer Science; Univ. of Wisconsin

2004-09-01

293

Solid waste comminution machine  

SciTech Connect

A solid waste comminution machine is described of the type having two sets of interleaving wheels, including a lower set and an upper set of wheel members. Each set includes a pair of shafts on which the wheel members are mounted, the pairs of shafts mounted on upright, mutually facing, movable arms. The improvement consists of: the upper set of wheel members having ripping and shearing tools attached to the circumferential periphery of the wheel members, the pair of shafts associated with the upper set of wheel members mounted on the movable arms, the lower set of wheel members mounted on a pair of fixed, parallel shafts, the shafts supported at one end of the arms with the lower set of wheel members interleaving in a material shearing relation. The shafts form a fixed pivot axis for the arms, the arms having fixed lengths with inward and outward ends, the outward ends extending beyond the shafts associated with the upper set of wheels thereby forming leverage regions, and hydraulic piston means having fixed ends and free ends, the free ends connected to the leverage regions for bringing the arms toward each other to a point at which the upper set of wheels mesh with sufficient force to enable ripping of material between the upper set of wheels.

Barclay, R.L.

1986-08-26

294

Video time encoding machines.  

PubMed

We investigate architectures for time encoding and time decoding of visual stimuli such as natural and synthetic video streams (movies, animation). The architecture for time encoding is akin to models of the early visual system. It consists of a bank of filters in cascade with single-input multi-output neural circuits. Neuron firing is based on either a threshold-and-fire or an integrate-and-fire spiking mechanism with feedback. We show that analog information is represented by the neural circuits as projections on a set of band-limited functions determined by the spike sequence. Under Nyquist-type and frame conditions, the encoded signal can be recovered from these projections with arbitrary precision. For the video time encoding machine architecture, we demonstrate that band-limited video streams of finite energy can be faithfully recovered from the spike trains and provide a stable algorithm for perfect recovery. The key condition for recovery calls for the number of neurons in the population to be above a threshold value. PMID:21296708

Lazar, Aurel A; Pnevmatikakis, Eftychios A

2011-02-04

295

Fatigue test machine  

NASA Astrophysics Data System (ADS)

This invention relates to an apparatus for testing materials under combined static and dynamic loads. Materials used in rotating components of, for example, jet engines are subjected to unusually severe environmental conditions during their operational lifetimes. Components such as disks and blades are subjected to high temperature excursions, high levels of 'steady' stress from centrifugal loads (low cycle stress), as well as high levels of high frequency 'dynamic' stress from resonant vibration response (high cycle stress). The thermal-mechanical cycling of the component material can lead to initiation and propagation of cracks at voids, defects or scratches. The crack initiation and propagation characteristics of materials used in jet engine components vary widely, according to whether the material is more or less ductile, and depend on temperature, low cycle stress, high cycle stress, frequency, dwell time, local atmospheric conditions and many other parameters. This abstract discloses fatigue testing machine for testing materials under combined static and dynamic loads. The mach ine comprises a right circular ring, a pair of specimen clamps adapted for slidably fitting into diametrically opposed openings in the ring, a support cradle for the ring and a shaker. The clamps comprises means for applying a static load to a specimen clamped therebetween.

Jones, D. I. G.

1985-12-01

296

Video Time Encoding Machines  

PubMed Central

We investigate architectures for time encoding and time decoding of visual stimuli such as natural and synthetic video streams (movies, animation). The architecture for time encoding is akin to models of the early visual system. It consists of a bank of filters in cascade with single-input multi-output neural circuits. Neuron firing is based on either a threshold-and-fire or an integrate-and-fire spiking mechanism with feedback. We show that analog information is represented by the neural circuits as projections on a set of band-limited functions determined by the spike sequence. Under Nyquist-type and frame conditions, the encoded signal can be recovered from these projections with arbitrary precision. For the video time encoding machine architecture, we demonstrate that band-limited video streams of finite energy can be faithfully recovered from the spike trains and provide a stable algorithm for perfect recovery. The key condition for recovery calls for the number of neurons in the population to be above a threshold value.

Lazar, Aurel A.; Pnevmatikakis, Eftychios A.

2013-01-01

297

From human-machine interaction to human-machine cooperation.  

PubMed

Since the 1960s, the rapid growth of information systems has led to the wide development of research on human-computer interaction (HCI) that aims at the designing of human-computer interfaces presenting ergonomic properties, such as friendliness, usability, transparency, etc. Various work situations have been covered--clerical work, computer programming, design, etc. However, they were mainly static in the sense that the user fully controls the computer. More recently, public and private organizations have engaged themselves in the enterprise of managing more and more complex and coupled systems by the means of automation. Modern machines not only process information, but also act on dynamic situations as humans have done in the past, managing stock exchange, industrial plants, aircraft, etc. These dynamic situations are not fully controlled and are affected by uncertain factors. Hence, degrees of freedom must be maintained to allow the humans and the machine to adapt to unforeseen contingencies. A human-machine cooperation (HMC) approach is necessary to address the new stakes introduced by this trend. This paper describes the possible improvement of HCI by HMC, the need for a new conception of function allocation between humans and machines, and the main problems encountered within the new forms of human-machine relationship. It proposes a conceptual framework to study HMC from a cognitive point of view in highly dynamic situations like aircraft piloting or air-traffic control, and concludes on the design of 'cooperative' machines. PMID:10929820

Hoc, J M

2000-07-01

298

Z Machine at Sandia Labs  

ScienceCinema

Sandia Labs' Z machine is the largest laboratory source of x-rays in the world. For the few nanoseconds of a Z Machine test, its electrical output equals the output of 50x the electrical generating stations of all the power plants on earth. The Z Machine complex encompasses an area roughly the size of a major college basketball arena. Originally created to validate nuclear weapons models, the Z Machine is also considered a "dark horse" in the race for viable fusion energy production. After the famous "arcs and sparks" photo of Z (a photo no longer possible after its refurbishment), this is a fast-motion video of workers completing Z's recent refurbishment.

299

A compact molecular beam machine  

SciTech Connect

We have developed a compact, low cost, modular, crossed molecular beam machine. The new apparatus utilizes several technological advancements in molecular beams valves, ion detection, and vacuum pumping to reduce the size, cost, and complexity of a molecular beam apparatus. We apply these simplifications to construct a linear molecular beam machine as well as a crossed-atomic and molecular beam machine. The new apparatus measures almost 50 cm in length, with a total laboratory footprint less than 0.25 m{sup 2} for the crossed-atomic and molecular beam machine. We demonstrate the performance of the apparatus by measuring the rotational temperature of nitric oxide from three common molecular beam valves and by observing collisional energy transfer in nitric oxide from a collision with argon.

Jansen, Paul [Vrije Universiteit, 1081 HV Amsterdam (Netherlands); Chandler, David W.; Strecker, Kevin E. [Sandia National Laboratories, Livermore, California 94551 (United States)

2009-08-15

300

Lasers in Machine Tool Controls.  

National Technical Information Service (NTIS)

A system is described for measuring those parameters which determine the dynamic characteristics of a numerically controlled machine; and, a system to correct for those errors. Both systems utilize a laser interferometer as the measurement transducer. The...

R. R. Burleson

1979-01-01

301

Dual coil power strapping machine  

US Patent & Trademark Office Database

An improved power strapping machine comprising a strapping device and a soft touch package compression device. The strapping device includes plurality of coils for supplying strapping to a guide apparatus. A chute apparatus for routing strapping around an article or package to be strapped is connected to the guide apparatus. The machine includes sensors and a control circuit adapted to operate the machine continuously without the need to stop production, since when one coil is out of strapping or a misfeed occurs, the machine will automatically load another coil of strapping and continue strapping packages. The soft touch package compression device uses pneumatic-drive chain drive systems for moving soft belts up and down. The soft belts compress the package so that the strapping device can place a tight strap around the package.

1994-08-02

302

Topic in Depth - Precision Machining  

NSDL National Science Digital Library

As technology advances and devices become smaller and more complex, the need for precision manufacturing processes is becoming increasingly important. A number of innovative techniques for precision machining have been developed to enable the construction and operation of such contrivances.

2010-09-06

303

Improving Accuracy of Machining Centers.  

National Technical Information Service (NTIS)

The effect of internal heat sources, primarily electric motors and spindle bearings, on the distortion and errors of the structure (frame) of a 3-axis machining center was investigated. Three methods were employed: analytical-numerical analysis using fini...

M. M. Barash R. Venugopal S. K. Lee

1989-01-01

304

Machines in art and chemistry  

Microsoft Academic Search

The present paper is intended to expose an example of similarity between chemistry and art not based on shape or appearance,\\u000a but rather on the common origins of the concepts involved. Specifically, the subject of this text is about machines and machinery\\u000a and makes a parallel between the construction of multi-machines in art and chemistry.

Jacques Vicens

2008-01-01

305

Extreme learning machines: a survey  

Microsoft Academic Search

Computational intelligence techniques have been used in wide applications. Out of numerous computational intelligence techniques,\\u000a neural networks and support vector machines (SVMs) have been playing the dominant roles. However, it is known that both neural\\u000a networks and SVMs face some challenging issues such as: (1) slow learning speed, (2) trivial human intervene, and\\/or (3) poor\\u000a computational scalability. Extreme learning machine

Guang-Bin HuangDian; Dian Hui Wang; Yuan Lan

2011-01-01

306

On relativizing auxiliary pushdown machines  

Microsoft Academic Search

We consider relativizing the constructions of Cook in [4] characterizing space-bounded auxiliary pushdown automata in terms of timebounded computers. LetS(n) = logn be a measurable space bound. LetDTA[NTA] be the class of setsS such that there exists a machineM such thatM with oracleA recognizes the setS andM is a deterministic [nondeterministic] oracle Turing machine acceptor that runs in time 2cS(n)

Dana Angluin

1979-01-01

307

A Universal Reversible Turing Machine  

Microsoft Academic Search

A reversible Turing machines is a computing model with a “backward deterministic” property, which is closely related to physical\\u000a reversibility. In this paper, we study the problem of finding a small universal reversible Turing machine (URTM). As a result,\\u000a we obtained a 17-state 5-symbol URTM in the quintuple form that can simulate any cyclic tag system.

Kenichi Morita; Yoshikazu Yamaguchi

2007-01-01

308

Synthetic organisms and living machines  

Microsoft Academic Search

The difference between a non-living machine such as a vacuum cleaner and a living organism as a lion seems to be obvious.\\u000a The two types of entities differ in their material consistence, their origin, their development and their purpose. This apparently\\u000a clear-cut borderline has previously been challenged by fictitious ideas of “artificial organism” and “living machines” as\\u000a well as by

Anna Deplazes; Markus Huppenbauer

2009-01-01

309

Toward human-machine cooperation  

Microsoft Academic Search

In human-machine systems, human activities are mainly oriented toward decision-making, encompassing monitoring and fault detection,\\u000a fault anticipation, diagnosis and prognosis, and fault prevention and recovery. The objectives of this decision-making are\\u000a related to human-machine system performance (production quantity and quality) as well as to overall system safety. In this\\u000a context, human operators often play a double role: one negative in

Patrick Millot

2007-01-01

310

Model-based machine learning  

PubMed Central

Several decades of research in the field of machine learning have resulted in a multitude of different algorithms for solving a broad range of problems. To tackle a new application, a researcher typically tries to map their problem onto one of these existing methods, often influenced by their familiarity with specific algorithms and by the availability of corresponding software implementations. In this study, we describe an alternative methodology for applying machine learning, in which a bespoke solution is formulated for each new application. The solution is expressed through a compact modelling language, and the corresponding custom machine learning code is then generated automatically. This model-based approach offers several major advantages, including the opportunity to create highly tailored models for specific scenarios, as well as rapid prototyping and comparison of a range of alternative models. Furthermore, newcomers to the field of machine learning do not have to learn about the huge range of traditional methods, but instead can focus their attention on understanding a single modelling environment. In this study, we show how probabilistic graphical models, coupled with efficient inference algorithms, provide a very flexible foundation for model-based machine learning, and we outline a large-scale commercial application of this framework involving tens of millions of users. We also describe the concept of probabilistic programming as a powerful software environment for model-based machine learning, and we discuss a specific probabilistic programming language called Infer.NET, which has been widely used in practical applications.

Bishop, Christopher M.

2013-01-01

311

Electrode Wear Process in Electrical Discharge Machinings  

Microsoft Academic Search

This paper deals with a synthetic consideration of electrode wear phenomena in electrical discharge machining. Time dependance of an electrode shape was observed through on-the-machine measurement. While the electrode wears at the edge portion in the beginning of machining, it grows at the flat portion in the longitudinal direction. In the stationary state of machining, the wear rate of an

Naotake Mohri; Masayuki Suzuki; Masanori Furuya; Nagao Saito; Akira Kobayashi

1995-01-01

312

Web Mining: Machine Learning for Web Applications.  

ERIC Educational Resources Information Center

Presents an overview of machine learning research and reviews methods used for evaluating machine learning systems. Ways that machine-learning algorithms were used in traditional information retrieval systems in the "pre-Web" era are described, and the field of Web mining and how machine learning has been used in different Web mining applications…

Chen, Hsinchun; Chau, Michael

2004-01-01

313

Iron loss calculation for synchronous reluctance machines  

Microsoft Academic Search

A numerical method for electric machine iron loss calculation is presented in this paper. The method is suitable for any synchronous and most DC machines, especially if the current waveforms are known a priori. This technique will be principally useful for high-speed machines and in particular for the synchronous reluctance machine, where the iron losses are often an important issue.

F. Leonardi; T. Matsuo; T.A. Lipo

1996-01-01

314

Web Mining: Machine Learning for Web Applications.  

ERIC Educational Resources Information Center

|Presents an overview of machine learning research and reviews methods used for evaluating machine learning systems. Ways that machine-learning algorithms were used in traditional information retrieval systems in the "pre-Web" era are described, and the field of Web mining and how machine learning has been used in different Web mining applications…

Chen, Hsinchun; Chau, Michael

2004-01-01

315

Error compensation in machine tools — a review  

Microsoft Academic Search

Accuracy of machined components is one of the most critical considerations for any manufacturer. Many key factors like cutting tools and machining conditions, resolution of the machine tool, the type of workpiece etc., play an important role. However, once these are decided upon, the consistent performance of the machine tool depends upon its ability to accurately position the tool tip

R Ramesh; M. A Mannan; A. N Poo

2000-01-01

316

Experimental study of machining system: dynamic characterization  

Microsoft Academic Search

In the workspace model of machining an experimental procedure is implemented to determine the elastic behaviour of the machining system. In an other work we have proposed a static characterization of the machining system. In this paper a dynamic characterization and vibration analysis have long been used for the detection and identification of machine tool condition. The natural frequencies of

Miron Zapciu; Olivier Cahuc; Claudiu-Florinel Bisu; Alain Gérard; Jean-Yves K'Nevez

2009-01-01

317

15 CFR 700.31 - Metalworking machines.  

Code of Federal Regulations, 2010 CFR

...machines (c) A metalworking machine producer is not required...total quantity of any size of machine in excess of 60 percent of...production of that size of machine for that month, or any...to a set-aside or the lead time, if delivery can be made...

2010-01-01

318

Hearts, Lungs, and Children: A Physiologist Returns To Kindergarten.  

ERIC Educational Resources Information Center

Details the experiences of a physiologist introducing kindergartners to the basics of cardiorespiratory physiology including pulmonary ventilation and circulatory transport of oxygen. Describes the demonstration and how it enables children to participate in scientific inquiry. Contains 17 references. (DDR)

Curran-Everett, Douglas

1995-01-01

319

A new breed of electric machines - basic analysis and applications of dual mechanical port electric machines  

Microsoft Academic Search

Conceptually, mechanical port of an electric machine can be doubled and the concept of dual-mechanical-port (DMP) will then give birth to a new breed of electric machines. In this paper, the various possible structures of DMP electric machine are discussed. Basic modeling and analysis issues related to the DMP electric machine are presented. An exemplary design of DMP machine is

Longya Xu

2005-01-01

320

Data Mining of Conditions for Machine Tools Based on Machining Information  

Microsoft Academic Search

With the increasing enhancement of product accuracy and reducing machining costs in the recent years, demands for functions which can predict machining conditions in advance for CAM systems, and controllers of machine tools (otherwise called CNC (Computerized Numerical Control) systems) are growing stronger and stronger. In actual machining, it is difficult to predict machining load from the performance of workpieces,

Masataka SAITO; Yoshikazu KOBAYASHI; Kenji SHIRAI

321

From Interpreter to Compiler and Virtual Machine  

Microsoft Academic Search

We show how to derive a compiler and a virtual machine from a com- positional interpreter. We rst illustrate the derivation with two eval- uation functions and two normalization functions. We obtain Krivine's machine, Felleisen et al.'s CEK machine, and a generalization of these machines performing strong normalization, which is new. We observe that several existing compilers and virtual machines|e.g.,

Mads Sig Ager; Dariusz Biernacki; Olivier Danvy; Jan Midtgaard

322

Coordinate-measuring machine capability  

NASA Astrophysics Data System (ADS)

Three-axis measuring machines have complex geometric and displacement errors. Many machine users are unaware of these systematic errors and think only in terms of the three-scale or displacement errors which may be significantly smaller in magnitude than the geometric errors. A method of estimating the columetric uncertainty of five coordinate measuring machines (CMMs) was established and the measurement uncertainty is reported for a 20 by 18 by 12 in. work zone. The Latin Square Three Dimensional Ball Plate (LS3DBP) and the Space Master Ball Plate (SMBP) were the volumetric standards selected for the evaluation. Data from each ball plate were transformed into new coordinates and compared to previous calibration or reference data. The deviation between measured and referenced values was recorded. These data were used to determine a quantitative estimate of the CMMs measurement capability in X, Y, and Z space by using the Analysis of Variance Technique (AOV).

Russell, R. J.

1983-11-01

323

Simple Machines in the Community  

NSDL National Science Digital Library

The community can be a powerful context and mini-laboratory for cultivating students' common understandings of science and mathematics. On the island of Panay in the Philippines, the community was the starting place for a group of fifth- and sixth-grade students to explore simple machines in their daily lives. What students learned in the process became the basis for developing the set of culturally relevant lessons on simple machines described in this article. Each of the examples that follow features a simple machine found in the community, an explanation of how it works, a guiding-inquiry question, and a follow-up activity designed to foster students' exploration of this question.

Laroder, Aris; Tippens, Deborah; Meliza (Melai) Emaz; Bryan, Robert; Fox, Ryan

2008-03-01

324

Rotary piston type fluid machine  

SciTech Connect

A rotary piston type fluid machine comprises one or more rotary piston type fluid machine units, each comprising a doughnut type ring-shaped cylinder with an annular slit being provided in the wall at the inward periphery lying in a plane containing the annular central line of the cylinder, a rotor rotatively supported by the cylinder with the peripheral portion being shiftably received within the slit, one or more rotary pistons secured to the peripheral surface of the rotor and adapted to be shifted within the cylinder, and one or more gate valves mounted to the cylinder so as to cross the cylinder and adapted to periodically protrude into the cylinder in synchronization with the movement of the rotary pistons. The rotary piston type fluid machine unit can be utilized as a compressor, an internal combustion engine, a pump, etc. by using it singly, or as a number of the units in combination.

Kagamiyama, R.

1984-05-29

325

National Geographic Society Map Machine  

NSDL National Science Digital Library

For those interested in map information, National Geographic's Map Machine is an effective place to start. Map Machine's Atlas allows users to click on a world map or on continent or country menus to retrieve country maps, with concise information and flags. There are also selected area maps available, created from weather satellite data, as well as political and physical maps and a Macromedia Shockwave enhanced world map that allows users to view a world map interactively. The quality of the maps is the quality of the site.

1996-01-01

326

Cooling system for rotating machine  

DOEpatents

An electrical machine comprising a rotor is presented. The electrical machine includes the rotor disposed on a rotatable shaft and defining a plurality of radial protrusions extending from the shaft up to a periphery of the rotor. The radial protrusions having cavities define a fluid path. A stationary shaft is disposed concentrically within the rotatable shaft wherein an annular space is formed between the stationary and rotatable shaft. A plurality of magnetic segments is disposed on the radial protrusions and the fluid path from within the stationary shaft into the annular space and extending through the cavities within the radial protrusions.

Gerstler, William Dwight (Niskayuna, NY); El-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Lokhandwalla, Murtuza (Clifton Park, NY); Alexander, James Pellegrino (Ballston Lake, NY); Quirion, Owen Scott (Clifton Park, NY); Palafox, Pepe (Schenectady, NY); Shen, Xiaochun (Schenectady, NY); Salasoo, Lembit (Schenectady, NY)

2011-08-09

327

Orientation to Machine Shop. Safety, Machine Identification, Metal Identification.  

ERIC Educational Resources Information Center

|These instructional materials provide an orientation to the machine shop for use at the postsecondary level. The first of three sections discusses four important areas of safety: (1) personal safety; (2) safety procedures; (3) safe work practices; and (4) fire prevention. The second section identifies and describes the general purposes of 12…

Engelbrecht, Nancy; And Others

328

Rube Goldberg and the Meaning of Machines  

NSDL National Science Digital Library

Simple and compound machines are designed to make work easier. When we encounter a machine that does not fit this understanding, the so-called machine seems absurd. Through the cartoons of Rube Goldberg, students are engaged in critical thinking about the way his inventions make simple tasks even harder to complete. As the final lesson in the simple machines unit, the study of Rube Goldberg machines can help students evaluate the importance and usefulness of the many machines in the world around them.

Integrated Teaching And Learning Program

329

The Perfect Science Machine  

NASA Astrophysics Data System (ADS)

ESO celebrates 10 years since First Light of the VLT Today marks the 10th anniversary since First Light with ESO's Very Large Telescope (VLT), the most advanced optical telescope in the world. Since then, the VLT has evolved into a unique suite of four 8.2-m Unit Telescopes (UTs) equipped with no fewer than 13 state-of-the-art instruments, and four 1.8-m moveable Auxiliary Telescopes (ATs). The telescopes can work individually, and they can also be linked together in groups of two or three to form a giant 'interferometer' (VLTI), allowing astronomers to see details corresponding to those from a much larger telescope. Green Flash at Paranal ESO PR Photo 16a/08 The VLT 10th anniversary poster "The Very Large Telescope array is a flagship facility for astronomy, a perfect science machine of which Europe can be very proud," says Tim de Zeeuw, ESO's Director General. "We have built the most advanced ground-based optical observatory in the world, thanks to the combination of a long-term adequately-funded instrument and technology development plan with an approach where most of the instruments were built in collaboration with institutions in the member states, with in-kind contributions in labour compensated by guaranteed observing time." Sitting atop the 2600m high Paranal Mountain in the Chilean Atacama Desert, the VLT's design, suite of instruments, and operating principles set the standard for ground-based astronomy. It provides the European scientific community with a telescope array with collecting power significantly greater than any other facilities available at present, offering imaging and spectroscopy capabilities at visible and infrared wavelengths. Blue Flash at Paranal ESO PR Photo 16b/08 A Universe of Discoveries The first scientifically useful images, marking the official 'First Light' of the VLT, were obtained on the night of 25 to 26 May 1998, with a test camera attached to "Antu", Unit Telescope number 1. They were officially presented to the press on the 27 May, exactly ten years ago. Since then, all four Unit Telescopes and four Auxiliary Telescopes went into routine operations and the number of instruments has continued to grow, to fill all the possible positions in the telescopes where instruments can be attached. In 2007, about 500 peer-reviewed papers using data collected with VLT and VLTI instruments at Paranal were published in scientific journals. Since the start of science operations, in April 1999, the VLT has led to the publication of more than 2200 refereed papers, an average of about one paper published every single working day. "The combination of high operational efficiency, system reliability and uptime for scientific observations results in very high scientific productivity," says Andreas Kaufer, director of the La Silla Paranal Observatory. The VLT and VLTI have contributed to all areas of astronomy, including the nature of dark matter and dark energy; the extreme physics of gamma-ray bursts and supernovae; the formation, structure and evolution of galaxies; the properties of exoplanets, Solar System objects, star clusters and stellar populations, the interstellar and intergalactic medium, and of super-massive black holes in galactic nuclei, in particular the one in the Galactic Centre; and the formation of stars and planets. The stunning scientific success of the VLT has attracted new member states to ESO. In the past decade Portugal joined (in 2001, after a ten-year associate status), followed by the United Kingdom (2002), Finland (2004), Spain (2006) and the Czech Republic (2007). Austria also announced its intent to join later this year. Another measure of success is the number of observing proposals made every year for the use of the VLT, which is now above the 1900 mark. On average, the amount of time requested to use the VLT is 6 times higher than what is available. The VLT will continue to increase in power over the next decade. The first of the second-generation VLT instruments, X-Shooter, will come online this year, with KMOS, SPHERE and MUS

2008-05-01

330

Magnet arrays for synchronous machines  

Microsoft Academic Search

The authors demonstrate that the Halbach array is highly applicable for magnetic excitation in synchronous machines. To this end, they present the geometry of Halbach arrays in Cartesian, polar, and cylindrical coordinates. They also present the design of a Cartesian linear motor which has been optimized for use in conjunction with a class of high-precision magnetic suspension stages for photolithography.

David L. Trumper; Mark E. Williams; Tiep H. Nguyen

1993-01-01

331

Synchronous Binarization for Machine Translation  

Microsoft Academic Search

Systems based on synchronous grammars and tree transducers promise to improve the quality of statistical machine transla- tion output, but are often very computa- tionally intensive. The complexity is ex- ponential in the size of individual gram- mar rules due to arbitrary re-orderings be- tween the two languages, and rules ex- tracted from parallel corpora can be quite large. We

Hao Zhang; Liang Huang; Daniel Gildea; Kevin Knight

2006-01-01

332

Hookup Security for Synchronous Machines  

Microsoft Academic Search

The author further delineates and improves the evidence that nondeducibility on strategies is a respectable candidate for a definition of security against information compromise, at least for the class of systems that can be modeled as synchronized state machines. First, the author confirms the thesis of J.T. Wittbold and D.M. Johnson (1990) that nondeducibility on strategies is stronger than the

Jonathan K. Millen

1990-01-01

333

Structural biology of cellular machines  

Microsoft Academic Search

Multi-component macromolecular machines contribute to all essential biological processes, from cell motility and signal transduction to information storage and processing. Structural analysis of assemblies at atomic resolution is emerging as the field of structural cell biology. Several recent studies, including those focused on the ribosome, the acrosomal bundle and bacterial flagella, have demonstrated the ability of a hybrid approach that

Wah Chiu; Matthew L. Baker; Steven C. Almo

2006-01-01

334

Machine Tool Operation, Course Description.  

ERIC Educational Resources Information Center

Prepared by an instructor and curriculum specialists, this course of study was designed to meet the individual needs of the dropout and/or hard-core unemployed youth by providing them skill training, related information, and supportive services knowledge in machine tool operation. The achievement level of each student is determined at entry, and…

Denny, Walter E.; Anderson, Floyd L.

335

Electrical Discharge Machining in Gas  

Microsoft Academic Search

In this paper, we show that electrical discharge machining (EDM) can be achieved in gas. With the help of a high-pressure gas flow supplied through a thin-walled pipe electrode, the molten workpiece material can be removed and flushed out of the working gap without being reattached to the electrode surfaces. The greatest advantage of this technique is that the tool

Masanori Kunieda; Masahiro Yoshida; Norio Taniguchi

1997-01-01

336

Machining of aerospace titanium alloys  

Microsoft Academic Search

The performance of PCBN (AMBORITE*) and PCD (SYNDITE) has been compared with that of coated tungsten carbide tool currently being used to machine titanium aerospace alloy. Tests confirm that SYNDITE gives a better surface finish, longer tool life and more manageable swarf than other tools. In addition, the “quick-stop” technique establishes that, for all three cutting tools, a layer is

Farhad Nabhani

2001-01-01

337

Time Machine at the Lhc  

Microsoft Academic Search

Recently, black hole and brane production at CERN's Large Hadron Collider (LHC) has been widely discussed. We suggest that there is a possibility to test causality at the LHC. We argue that if the scale of quantum gravity is of the order of few TeVs, proton-proton collisions at the LHC could lead to the formation of time machines (spacetime regions

I. Ya. Aref'eva; I. V. Volovich

2008-01-01

338

Oil-shale mining machine  

Microsoft Academic Search

A mining machine is described comprising a frame, a plurality of superposed horizontally disposed and forwardly divergent spiral digging members at the forward end of the frame. The members have passages for receiving and discharging a heating medium, means for rotating the members, and means for communicating the passages with a heating medium.

Findlater

1950-01-01

339

Machinability of Stellite 6 hardfacing  

Microsoft Academic Search

This paper reports some experimental findings concerning the machinability at high cutting speed of nickel-base weld-deposited hardfacings for the manufacture of hot tooling. The forging work involves extreme impacts, forces, stresses and temperatures. Thus, mould dies must be extremely resistant. The aim of the project is to create a rapid prototyping process answering to forging conditions integrating a Stellite 6

M. Benghersallah; L. Boulanouar; G. Le Coz; A. Devillez; D. Dudzinski

2010-01-01

340

Single Machine Tardiness Sequencing Heuristics  

Microsoft Academic Search

This paper presents a collection of heuristics for the single machine total (weighted) tardiness problem. The methods considered range from simple quick and dirty heuristics to more sophisticated algorithms exploiting problem structure. These heuristics are compared to interchange and simulated annealing methods on a large set of test problems. For the total tardiness problem a heuristic based on decomposition performs

C. N. POTTS; L. N. VAN WASSENHOVE

1991-01-01

341

Simple Machines in the Community  

ERIC Educational Resources Information Center

|The community can be a powerful context and mini-laboratory for cultivating students' common understandings of science and mathematics. On the island of Panay in the Philippines, the community was the starting place for a group of fifth- and sixth-grade students to explore simple machines in their daily lives. What students learned in the process…

Bryan, Robert; Laroder, Aris; Tippins, Deborah; Emaz, Meliza; Fox, Ryan

2008-01-01

342

Atwood Machine in Fluid Model  

NSDL National Science Digital Library

The Atwood Machine in a Fluid model shows two masses connected by strings and pulleys immersed in a water tank. Each mass is acted on by gravitational, buoyant, and drag forces. Users can change density of the left and right mass using input fields and can drag either mass to change the initial conditions. Note that the floor of the tank produces a normal force that limits the motion.   If the water is removed the tank, the model behaves like a traditional Atwood machine. Adding water changes the dynamics in many ways. Because the buoyant force varies as the mass is submerged, the system oscillates anharmonically about an equilibrium point that depends on the mass densities. The Atwood Machine in Fluid model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_mech_fluid_AtwoodMachineInFluid.jar file will run the program if Java is installed.

Christian, Wolfgang; Goncalves, Jose J.

2010-10-14

343

Leviathan Teaching Machine: Sixth Briefing.  

National Technical Information Service (NTIS)

The teaching machine is used, as part of the experimental design, to indoctrinate subjects for Leviathan experiments. It is the sixth in a series of briefings--the other five, as well as a set of charts, have been published as: TM-1923/001/00 - AD-446807,...

B. K. Rome S. C. Rome

1967-01-01

344

Far Travelers: The Exploring Machines.  

ERIC Educational Resources Information Center

The National Aeronautics and Space Administration (NASA) program of lunar and planetary exploration produced a flood of scientific information about the moon, planets and the environment of interplanetary space. This book is an account of the people, machines, and the events of this scientific enterprise. It is a story of organizations,…

Nicks, Oran W.

345

Machine Casting of Ferrous Alloys.  

National Technical Information Service (NTIS)

This report covers the research for the period of the eighteenth to the thirthieth month of a four-year program. During this period the 'Continuous Rheocaster' has been greatly improved and a machine casting system using semi-solid alloys 'Thixocasting' h...

M. C. Flemings R. Mehrabian J. R. Melcher R. G. Riek K. P. Young

1975-01-01

346

Fuzzy assessment of machine flexibility  

Microsoft Academic Search

Manufacturing flexibility is a difficult and multifaceted concept that because of its inherent complexity and fuzziness is amenable to an artificial intelligence treatment. Fuzzy logic offers a suitable framework for measuring flexibility in its various aspects. This paper deals with the measurement of machine flexibility. When data are precise, this is done via a simple analytical formula. But if such

Nikos C. Tsourveloudis; Yannis A. Phillis

1998-01-01

347

ULTRA: A Multilingual Machine Translator  

Microsoft Academic Search

ULTRA (Universal Language TRAnslator) is a mul- tilingual, interlingual machine translation system currently under development at the Computing Re- search Laboratory at New Mexico State University. It translates between five languages (Chinese, En- glish, German, Japanese, Spanish) with vocabular- ies in each language based on approximately 10,000 word senses. The major design criteria are that the system be robust and

David Farwell; Yorick Wilks

1990-01-01

348

Teaching Machines to Think Fuzzy  

ERIC Educational Resources Information Center

|Fuzzy logic programs for computers make them more human. Computers can then think through messy situations and make smart decisions. It makes computers able to control things the way people do. Fuzzy logic has been used to control subway trains, elevators, washing machines, microwave ovens, and cars. Pretty much all the human has to do is push…

Technology Teacher, 2004

2004-01-01

349

Machine translation of natural languages  

Microsoft Academic Search

The field of machine translation has recently entered a new, third period in its evolution. In its early period, for roughly fifteen years from 1950 MT was an expanding field of study in which both research and development efforts were undertaken. It is well-known and well documented (Bar Hillel, 1960; ALPAC, 1966) that this early MT paradigm could not and

Sergei Nirenburg

1985-01-01

350

Machine translation over fifty years  

Microsoft Academic Search

The history of machine translation is described from its beginnings in the 1940s to the present day. In the earliest years, efforts were concentrated either on developing immediately useful systems, however crude in their translation quality, or on fundamental research for high quality translation systems. After the ALPAC report in 1966, which virtually ended MT research in the US for

W. John Hutchins

2001-01-01

351

Feedback Controlled Laser Machining System.  

National Technical Information Service (NTIS)

A system for machining a workpiece to desired finished workpiece specifications. The system comprises a system for producing a laser beam; a system for positioning the workpiece relative to the laser beam; a system for measuring the topography of the work...

J. Furmanski M. Shirk

2005-01-01

352

Ozone production from photocopying machines  

Microsoft Academic Search

Ten photocopying machines of different makes and models were tested for ozone emissions. All but one produced detectable amounts. Concentrations at operator's breathing zone varied from <4 to 300?µg\\/m, which corresponded to emission rates of <1 to 54?µg\\/copy. Servicing reduced emissions to <1–4?µg\\/copy, but preservicing levels were reattained after several weeks of operation.

M. D. SELWAY; R. J. ALLEN; R. A. WADDEN

1980-01-01

353

Near dry electrical discharge machining  

Microsoft Academic Search

This study investigates the near dry electrical discharge machining (EDM) process. Near dry EDM uses liquid–gas mixture as the two phase dielectric fluid and has the benefit to tailor the concentration of liquid and properties of dielectric medium to meet desired performance targets. A dispenser for minimum quantity lubrication (MQL) is utilized to supply a minute amount of liquid droplets

C. C. Kao; Jia Tao; Albert J. Shih

2007-01-01

354

Simple Machines in the Community  

ERIC Educational Resources Information Center

The community can be a powerful context and mini-laboratory for cultivating students' common understandings of science and mathematics. On the island of Panay in the Philippines, the community was the starting place for a group of fifth- and sixth-grade students to explore simple machines in their daily lives. What students learned in the process…

Bryan, Robert; Laroder, Aris; Tippins, Deborah; Emaz, Meliza; Fox, Ryan

2008-01-01

355

Machine Shop. Student Learning Guide.  

ERIC Educational Resources Information Center

|This student learning guide contains eight modules for completing a course in machine shop. It is designed especially for use in Palm Beach County, Florida. Each module covers one task, and consists of a purpose, performance objective, enabling objectives, learning activities and resources, information sheets, student self-check with answer key,…

Palm Beach County Board of Public Instruction, West Palm Beach, FL.

356

Precision Machining Technology. Curriculum Guide.  

ERIC Educational Resources Information Center

|This curriculum guide was developed from a Technical Committee Report prepared with the assistance of industry personnel and containing a Task List which is the basis of the guide. It presents competency-based program standards for courses in precision machining technology and is part of the Idaho Vocational Curriculum Guide Project, a…

Idaho State Dept. of Education, Boise. Div. of Vocational Education.

357

Confldence Estimation for Machine Translation  

Microsoft Academic Search

We present a detailed study of confldence esti- mation for machine translation. Various meth- odsfordeterminingwhetherMToutputiscor- rect are investigated, for both whole sentences andwords. Sincethenotionofcorrectnessisnot intuitively clear in this context, difierent ways of deflning it are proposed. We present results ondatafromtheNIST2003Chinese-to-English MT evaluation.

John Blatz; Erin Fitzgerald; George Foster; Simona Gandrabur; Alex Kulesza; Alberto Sanchis; Nicola Ue-ng; RWTH Aachen

2003-01-01

358

Precision Machining Technology. Curriculum Guide.  

ERIC Educational Resources Information Center

This curriculum guide was developed from a Technical Committee Report prepared with the assistance of industry personnel and containing a Task List which is the basis of the guide. It presents competency-based program standards for courses in precision machining technology and is part of the Idaho Vocational Curriculum Guide Project, a cooperative…

Idaho State Dept. of Education, Boise. Div. of Vocational Education.

359

Machine Shop. Student Learning Guide.  

ERIC Educational Resources Information Center

This student learning guide contains eight modules for completing a course in machine shop. It is designed especially for use in Palm Beach County, Florida. Each module covers one task, and consists of a purpose, performance objective, enabling objectives, learning activities and resources, information sheets, student self-check with answer key,…

Palm Beach County Board of Public Instruction, West Palm Beach, FL.

360

Machine Learning for Information Management.  

National Technical Information Service (NTIS)

This paper discusses machine learning in the context of information management. The core idea is that of a compiler system that can hold a conversation with a user in English about his specific domain of interest, subsequently retrieve and display informa...

G. G. Hendrix N. Haas

1981-01-01

361

Practical Stability of a Reluctance Synchronous Machine.  

National Technical Information Service (NTIS)

The ideal reluctance synchronous machine with dual rotor windings is modeled mathematically and simulated on a digital computer. In addition, it is demonstrated that practical stability of the machine exists when the Liapunov theorem requirements have bee...

W. U. Borger

1975-01-01

362

Advanced reconfigurable machine for flexible fabrication  

NASA Astrophysics Data System (ADS)

In a recently awarded ARPA program to advance the state of the art of parallel actuated next-generation machine tools, a vertically integrated team led by Martin Marietta is applying recent advanced in electroceramic smart materials and advanced composites to achieve leapfrog advanced in precision, flexibility, and speed of machine tools. Specific approached to achieve these advanced include active vibration cancellation, improved control technology, and design optimization using advanced structural and dynamic models. In this program, the team will integrate large high-force actuators, composites, and active vibration control with the Ingersoll Milling Machine Company's innovative Octahedral Hexapod machine to develop to Advanced Reconfiguration Machine for Flexible Fabrication. The enhanced Octahedral Hexapod machine will provide new levels of machining flexibility while still retaining precision and low cost. This technology will have widespread impact on the flexible fabrication of materials--especially those that are tough to machine traditionally--in several industries, e.g., aerospace, defense, aircraft, and automotive.

Cooke, Arthur V.; Shankar, Natarajan; Jones, Lorianne; Ewaldz, Dave; Haynes, Leonard S.; Martinez, David R.; Wada, Ben K.; Zweben, Carl

1995-05-01

363

Classification and Enumeration of Autonomous Sequential Machines.  

National Technical Information Service (NTIS)

A study is reported of the structure of the state transition graphs of autonomous sequential machines. (An autonomous sequential machine can be viewed as an isolated, discrete information processing system). The structural properties of the graphs are for...

H. F. Ryan

1967-01-01

364

PACRAT: A Machine Brain. Part 1.  

National Technical Information Service (NTIS)

A computer program to simulate and exercise a mammalian brain has been written. We describe the section that builds the brain. Artificial Intelligence, Nonliving Intelligence, Machine Intelligence, Thinking Machine, Intelligence.

R. Scanlon M. Johnson

1992-01-01

365

49 CFR 236.772 - Machine, interlocking.  

Code of Federal Regulations, 2012 CFR

...Transportation 4 2012-10-01 2012-10-01 false Machine, interlocking. 236.772 Section 236.772 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.772 Machine, interlocking. An assemblage of manually operated...

2012-10-01

366

49 CFR 236.771 - Machine, control.  

Code of Federal Regulations, 2012 CFR

...Transportation 4 2012-10-01 2012-10-01 false Machine, control. 236.771 Section 236.771 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.771 Machine, control. An assemblage of manually operated devices...

2012-10-01

367

Active Research Topics in Human Machine Interfaces.  

National Technical Information Service (NTIS)

This paper identifies active research topics concerning human machine interfaces for intelligent machine systems. The paper was compiled by performing a series of literature searches and organizing the information according to the author's interest in bet...

M. J. McDonald

2000-01-01

368

49 CFR 236.771 - Machine, control.  

Code of Federal Regulations, 2011 CFR

...Transportation 4 2011-10-01 2011-10-01 false Machine, control. 236.771 Section 236.771 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.771 Machine, control. An assemblage of manually operated devices...

2011-10-01

369

49 CFR 236.772 - Machine, interlocking.  

Code of Federal Regulations, 2011 CFR

...Transportation 4 2011-10-01 2011-10-01 false Machine, interlocking. 236.772 Section 236.772 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.772 Machine, interlocking. An assemblage of manually operated...

2011-10-01

370

15 CFR 700.31 - Metalworking machines.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Metalworking machines. 700.31 Section 700.31 Commerce and...and Critical Items § 700.31 Metalworking machines. (a) âMetalworking machinesâ include power driven, manual or...

2013-01-01

371

Calculating Kinetics of a Student Designed Machine  

NSDL National Science Digital Library

This activity is a project-based inquiry where students design and create a machine to complete a task. Then students will be asked to calculate velocities, kinetic energy and potential energies of various parts of their machine.

372

Discovering Machine-Specific Code Improvements.  

National Technical Information Service (NTIS)

A compiler construction tool has been designed and built that automates much of the case analysis necessary to exploit special purpose instructions on a target machine. Given a suitable description of the target machine, the analysis identifies instructio...

S. L. Graham

1985-01-01

373

Advancement in electrochemical micro-machining  

Microsoft Academic Search

Electrochemical micro-machining (EMM) appears to be very promising as a future micro-machining technique, since in many areas of applications it offers several advantages, which include higher machining rate, better precision and control, and a wide range of materials that can be machined. In this paper, a review is presented on current research, development and industrial practice in micro-ECM. This paper

B. Bhattacharyya; J. Munda; M. Malapati

2004-01-01

374

Study on the dry electrical discharge machining  

Microsoft Academic Search

The dry electrical discharge machining is considered by the researchers as an environment friendly machining process and different\\u000a specific aspects of this machining method are presented in the specialty literature. To obtain holes by electrical discharge\\u000a machining, tubular rotating electrodes tools could be used. The paper presents a relatively simple device proposed to be used\\u000a for applying the dry electrical

Irina Be?liu; Hans-Peter Schulze; Margareta Cotea??; Dumitru Amarandei

2010-01-01

375

Specimen coordinate automated measuring machine/fiducial automated measuring machine  

DOEpatents

The Specimen coordinate Automated Measuring Machine (SCAMM) and the Fiducial Automated Measuring Machine (FAMM) is a computer controlled metrology system capable of measuring length, width, and thickness, and of locating fiducial marks. SCAMM and FAMM have many similarities in their designs, and they can be converted from one to the other without taking them out of the hot cell. Both have means for: supporting a plurality of samples and a standard; controlling the movement of the samples in the +/- X and Y directions; determining the coordinates of the sample; compensating for temperature effects; and verifying the accuracy of the measurements and repeating as necessary. SCAMM and FAMM are designed to be used in hot cells.

Hedglen, Robert E. (Bethel Park, PA); Jacket, Howard S. (Pittsburgh, PA); Schwartz, Allan I. (Turtle Creek, PA)

1991-01-01

376

Bookkeeping Machines, Business Education: 7718.04.  

ERIC Educational Resources Information Center

|Postings, accounts receivable and payable, and payroll entries made while using a bookkeeping machine make up the course content described in this pamphlet. The course seeks to prepare students to operate accounting machines as a prerequisite to the operation of more complex machines and adult, on-the-job training. Course guidelines, objectives,…

McShane, Jane

377

A Comparison of Different Machine Transliteration Models  

Microsoft Academic Search

Machine transliteration is a method for automatically converting words in one lan- guage into phonetically equivalent ones in another language. Machine transliteration plays an important role in natural language applications such as information retrieval and ma- chine translation, especially for handling proper nouns and technical terms. Four machine transliteration models { grapheme-based transliteration model, phoneme-based translitera- tion model, hybrid transliteration

Oh Jong-hoon; Key-sun Choi; Hitoshi Isahara

2006-01-01

378

Approximation Algorithms for Scheduling Unrelated Parallel Machines  

Microsoft Academic Search

We consider the following scheduling problem. There are m parallel machines and n independent jobs. Each job is to be assigned to one of the machines. The processing of job j on machine i requires time pij. The objective is to find a schedule that minimizes the makespan. Our main result is a polynomial algorithm which constructs a schedule that

Jan Karel Lenstra; David B. Shmoys; Éva Tardos

1987-01-01

379

Unrelated parallel machine scheduling with job splitting  

Microsoft Academic Search

Scheduling jobs on unrelated parallel machines is an activity that is very much a part of industrial scheduling. We report a methodology for minimizing the total weighted tardiness of all jobs intended to be processed on unrelated parallel machines in the presence of dynamic job releases and dynamic machine availability. More importantly, the mixed (binary) integer linear programming model formulated

RASARATNAM LOGENDRAN; FENNY SUBUR

2004-01-01

380

Online scheduling on semi-related machines  

Microsoft Academic Search

Article history: We study the problem of minimizing the makespan on related machines in the following setting: jobs arrive over time, and the machines may become available or unavailable. In either case, advance warning is given, i.e., the next point of time where a job is released or a machine changes state is revealed a little time ahead. We present

Ulrich M. Schwarz

2008-01-01

381

Artificial Intelligence, Machine Learning, and Music Understanding  

Microsoft Academic Search

Artificial Intelligence and Machine Learning are enabling many advances in the area of music. Three computer music problems are described in which Machine Learning promises to solve problems and advance the state of the art. These are: computer accompaniment, music understanding in interactive compositions, and music synthesis. Machine Learning plays an important role in dealing with poorly defined problems where

Roger B. Dannenberg

382

Project Plan for Vertical Lift Machine  

Microsoft Academic Search

This document describes the Project Plan for the development and manufacture of a Vertical Lift Machine. It is assumed by this project plan that the Vertical Lift Machine will be developed, designed, manufactured, and tested by a qualified vendor. LLNL will retain review and approval authority for each step given in this project plan. The Vertical Lift Machine is a

Ellsworth

2002-01-01

383

PRE-MACHINING CNC CONTOUR VALIDATION  

Microsoft Academic Search

The current procedure followed to manufacture a new part by CNC machining is to write the part program, machine a test part and measure the test part for conformance to the required dimensions and tolerances. If the test part dimensions are not correct, the part program is modified and the process repeated until a successful part is machined. In many

Tony Schmitz; John Ziegert

384

Machining of aluminium based metal matrix composites  

Microsoft Academic Search

Although metal matrix composites (MMCs) are generally regarded as extremely difficult to machine, it is also acknowledged that their machining behaviour is not fully understood. The work reviewed here confirms this widely held view but also suggests that the machinability of these materials can be improved by appropriate selection of the reinforcing phase, its volume fraction, size, and morphology as

S. Barnes; I. R. Pashby

1995-01-01

385

Machine scheduling with resource dependent processing times  

Microsoft Academic Search

We consider several parallel machine scheduling settings with the objective to min- imize the schedule makespan. The most general of these settings is unrelated parallel machine scheduling. We assume that, in addition to its machine dependence, the processing time of any job is dependent on the usage of a scarce renewable resource. A given amount of that resource, e.g. workers,

Alexander Grigoriev; Maxim Sviridenko; Marc Uetz

2007-01-01

386

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Vending machines. 5.5 Section 5.5 Commerce...OPERATION OF VENDING STANDS § 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2010-01-01

387

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2010 CFR

...2009-01-01 2009-01-01 false Vending machines. 5.5 Section 5.5 Commerce...OPERATION OF VENDING STANDS § 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2009-01-01

388

Magnetic properties in double star induction machine  

Microsoft Academic Search

Multiphase machines are getting increasingly common in electric traction. The prediction of the losses in multiphase machine is a fundamental step for the optimization of its design. The present paper deals with an experimental study of the behavior of the losses observed in double star induction machines (DSIM). We suggest a study of the losses through the measurements of the

H. Hammache; D. Moussaoui; K. Marouani; T. Hamdouche

2008-01-01

389

The Honeywell Modular Microprogram Machine: M 3  

Microsoft Academic Search

M3 is intended for research into unconventional special purpose stored program elements of computer systems (for example, a distributed computer Bus Interface Unit). The principal requirements for such a machine are flexibility and modularity. M3 consists of an application independent Kernel Machine to which application-dependent Functional Modules are attached. The Kernel Machine is vertically microprogrammed; it includes highly capable microinstruction

E. Douglas Jensen; Richard Y. Kain

1977-01-01

390

49 CFR 173.174 - Refrigerating machines.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Refrigerating machines. 173.174 Section 173.174 Transportation...Class 1 and Class 7 § 173.174 Refrigerating machines. A refrigerating machine assembled for shipment and containing 7 kg...

2012-10-01

391

Method and apparatus for monitoring machine performance  

DOEpatents

Machine operating conditions can be monitored by analyzing, in either the time or frequency domain, the spectral components of the motor current. Changes in the electric background noise, induced by mechanical variations in the machine, are correlated to changes in the operating parameters of the machine.

Smith, Stephen F. (Loudon, TN); Castleberry, Kimberly N. (Harriman, TN)

1996-01-01

392

7 CFR 58.429 - Washing machine.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Washing machine. 58.429 Section 58.429 Agriculture...Equipment and Utensils § 58.429 Washing machine. When used, the washing machine for cheese cloths and bandages shall be...

2013-01-01

393

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Vending machines. 5.5 Section 5.5 Commerce and...OPERATION OF VENDING STANDS § 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2012-01-01

394

49 CFR 173.174 - Refrigerating machines.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Refrigerating machines. 173.174 Section 173.174 Transportation...Class 1 and Class 7 § 173.174 Refrigerating machines. A refrigerating machine assembled for shipment and containing 7 kg...

2011-10-01

395

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Vending machines. 5.5 Section 5.5 Commerce and...OPERATION OF VENDING STANDS § 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2013-01-01

396

20 CFR 368.3 - Vending machines.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2012-04-01 true Vending machines. 368.3 Section 368.3 Employees...CIGARETTE SALES TO MINORS § 368.3 Vending machines. The sale of tobacco products in vending machines is prohibited in or around Federal...

2013-04-01

397

Design Your Own Rube Goldberg Machine  

NSDL National Science Digital Library

Engineer and cartoonist Rube Goldberg is famous for his crazy machines that accomplish everyday tasks in overly complicated ways. Learners use their understanding of simple machines to design and build their own Rube Goldberg machines that perform simple tasks in no less than ten steps. Then, learners build prototypes of their designs. Resource contains investigating questions to assess understanding and extend learning.

University, Tufts

2005-01-01

398

Design Your Own Rube Goldberg Machine  

NSDL National Science Digital Library

Engineer and cartoonist Rube Goldberg is famous for his crazy machines that accomplish everyday tasks in overly complicated ways. Students use their new understanding of types of simple machines to design and build their own Rube Goldberg machines that perform simple tasks in no less than 10 steps.

Center For Engineering Educational Outreach

399

Debugging Fortran on a shared memory machine  

SciTech Connect

Debugging on a parallel processor is more difficult than debugging on a serial machine because errors in a parallel program may introduce nondeterminism. The approach to parallel debugging presented here attempts to reduce the problem of debugging on a parallel machine to that of debugging on a serial machine by automatically detecting nondeterminism. 20 refs., 6 figs.

Allen, T.R.; Padua, D.A.

1987-01-01

400

Torque-Energy Relations in Induction Machines  

Microsoft Academic Search

The laws of electromagnetic energy flow, through space and over wires, and of energy storage in magnetic and electric fields, are applied to an induction machine. This leads to a visualization of the machine as an array of magnetized air spaces in which intense and turbulent energy concentrations exist. The copper and iron structures of the machine that are apparent

P. L. Alger; W. R. Oney

1954-01-01

401

Elevated Temperature Machining of High Strength Alloys.  

National Technical Information Service (NTIS)

Hot-machining tests in turning, boring, and milling were conducted on AISI 4340, AISI 4150, and on manganese steel workpieces to improve the shaping of both conventional and difficult-to-machine alloys. The workpieces were heated during the machining oper...

A. O. Schmidt

1974-01-01

402

Improved machinability of nitriding steel (SACM 645)  

Microsoft Academic Search

Nitriding steel (SACM 645) is a base material which has a high resistivity of wear and high fatigue strength. However the machinability is very low, because the hardness of this steel is relatively high. To improve the machinability of SACM 645, molybdenum and vanadium are added during making this steel. Two kinds of improved machinability steel (Mo 1.3, 2.1%, V

Masatoshi Hirao; Toru Fuse; Keiichi Shirase; Takeshi Yasui; Tetsuo Shiraga; Nobuyuki Ishikawa

1996-01-01

403

JBK-75 stainless steel machinability study  

Microsoft Academic Search

The study on forgings characterized machinability of the material by varying cutting speeds and feedrates utilizing four tools for the roughing operation and four tools for the semi-finish operation. Tools tested were obtained from four manufacturers. Twelve parts were machined utilizing an experimental design to determine all possible interactions between cutting speeds and feedrates. To evaluate the machinability of the

A. P. McManigle; A. W. Simonis

1993-01-01

404

The complex behavior of simple machines  

Microsoft Academic Search

This paper interprets work on understanding the actions of Turing machines operating on an initially blank tape. While this is impossible for arbitrary machines, complete characterizations of behavior are possible if the number of states is sufficiently constrained. The approach combines normalization to drastically reduce the number of machines considered, human-generated classification schemes, and computer-generated proofs of behavior. This approach

Rona Machlin; Quentin F. Stout

1990-01-01

405

HAPTICS-AUGMENTED SIMPLE MACHINES EDUCATIONAL TOOLS  

Microsoft Academic Search

This article describes a unique project using commercial haptic interfaces to augment the teaching of simple machines in elementary school. Haptic interfaces provide the sense of touch and force to the human from a virtual model on the computer. Since force is central to the teaching of simple machines, we believe that the use of haptics in virtual simple machines

Robert L. Williams; Meng-Yun Chen; Jeffrey M. Seaton

406

Live digital forensics in a virtual machine  

Microsoft Academic Search

Traditional computer forensics is performed towards physical machines, using a set of forensic tools to acquire disk images and memory dumps. But it is much more different to deal with virtual machines. Live forensics is used to acquire volatile data and improve efficiency, but how to perform live forensics on a subject system with virtual machines hosted in? This paper

Lei Zhang; Dong Zhang; Lianhai Wang

2010-01-01

407

Selected problems of abrasive hybrid machining  

Microsoft Academic Search

Advanced manufacturing processes are increasingly hybridized with other conventional and nontraditional machining processes to create entirely new techniques with superior manufacturing and control capabilities. The study reported in this paper explores some of the fundamental processes, which occur during abrasive electrochemical machining (AECM, AECG, ECH) and abrasive electrical discharge machining (AEDM, AEDG).

Jerzy Kozak; Kazimierz E Oczo?

2001-01-01

408

Magnetic field-assisted electrochemical discharge machining  

Microsoft Academic Search

Electrochemical discharge machining (ECDM) is an effective unconventional method for micromachining in non-conducting materials, such as glass, quartz and some ceramics. However, since the spark discharge performance becomes unpredictable as the machining depth increases, it is hard to achieve precision geometry and efficient machining rate in ECDM drilling. One of the main factors for this is the lack of sufficient

Chih-Ping Cheng; Kun-Ling Wu; Chao-Chuang Mai; Yu-Shan Hsu; Biing-Hwa Yan

2010-01-01

409

Electrochemical machining under orbital motion conditions  

Microsoft Academic Search

The range of practical applications of electrochemical machining (ECM) is limited by relatively low machining accuracy, specially in cases of complicated shapes. One of the major problems is the generation of spikes which delay the accuracy of the process. The problem is strongly exaggerated if the tool includes multi-electrolyte holes. Moreover, additional machining processes will be needed to remove the

M. S. Hewidy; S. J. Ebeid; K. P. Rajurkar; M. F. El-Safti

2001-01-01

410

Electrical discharge machining for sharpening diamond disks  

Microsoft Academic Search

Electrical discharge machines have undergone rapid improvements in capability, economical operation, speed and flexibility. In fact, electrical discharge machining (EDM) is now the fourth most popular machining process, selling more than all other processes except milling, turning and grinding. Ninety percent of EDM applications in the world are used to produce molds, stamping dies, extrusion dies, forging dies, tool fixtures

Jesus Doval-Gandoy; Ramón Pasandin; Bernardo Fernandez

2004-01-01

411

Smart control system for machine tools  

Microsoft Academic Search

298 1 Precision is the most important characteristic of most technological machines and, in particular, metalcutting machines. Insufficient manufacturing precision in powerful and high-speed metal-cutting machines disrupts their normal functioning and hence leads to accelerated wear and failure as a result of the additional dynamic loads and variation. This accounts for the continuous increase in the requirements on manufacturing precision.

A. K. Tugengol’d; E. A. Luk’yanov; E. A. Remizov; D. A. Nosenkov

2009-01-01

412

ANALYSIS OF THE INTERFERENCE SYNCHRONOUS MACHINE  

Microsoft Academic Search

Interference synchronous machines operate at different speeds of the fundamental air gap field and of the rotor, because the fundamental permeance wave is produced by interference of open stator and rotor slots the numbers of which being slightly different. In the literature different names are used for this remarkable electrical machine (“Synchronous inductor motor”, “Vernier reluctance motor”). Interference synchronous machines

E. ANDRESEN

1978-01-01

413

Permanent Magnet Machine Design Practice and Optimization  

Microsoft Academic Search

The complexity of the permanent magnet (PM) machine structure makes the optimal design of the PM machine always a difficult task. The multiple objectives of an optimal design make most classic optimization algorithms inapplicable, due to the nonlinearity and some discontinous variables. In this paper, two interior permanent magnet (IPM) machine design practices with modular stator structure and conventional stator

Wen Ouyang; Damir Zarko; T.A. Lipo

2006-01-01

414

???????????????????????????????????????????? Design and Development of Shrimp Straightening Machine  

Microsoft Academic Search

A semi automatic shrimp straightening machine controlled by a programmable logic controller (PLC) was designed and developed. The machine consisted of three main parts, a shrimp conveyor, a shrimp pressing straightening part and the controller. The machine had three operation steps. In the first step, a pneumatic cylinder retreated at the stroke of 5 cm to move the conveyor with

Prakarn Paemunkong

415

Application of Fractal in Machine Downtime Control  

Microsoft Academic Search

Unexpected machine failures directly impact machine availability, which leads to phantom capacity, high maintenance cost, and risks to factory profitability and competitiveness. The collateral damage far exceeds the original downtime itself. This paper proposes a fractal based method for machine downtime trend analysis and performance control. AR (Auto Regression) model is applied for data pre-process, rescaled range (R\\/S) analysis and

Xuanxuan Li; Bo Li; Limei Xu; Sean Li

2007-01-01

416

Electrical Discharge Machining (EDM) Characteristics Associated with Electrical Discharge Energy on Machining of Cemented Tungsten Carbide  

Microsoft Academic Search

In this investigation, cemented tungsten carbides graded K10 and P10 were machined by electrical discharge machining (EDM) using an electrolytic copper electrode. The machining parameters of EDM were varied to explore the effects of electrical discharge energy on the machining characteristics, such as material removal rate (MRR), electrode wear rate (EWR), and surface roughness. Moreover, the effects of the electrical

Yan-Cherng Lin; Yuan-Feng Chen; Ching-Tien Lin; Hsinn-Jyh Tzeng

2008-01-01

417

Machining piezoelectric (PZT) ceramics using an electrochemical spark machining (ECSM) process  

Microsoft Academic Search

Machining of advanced engineering materials such as composites and ceramics is important but it is very difficult and uneconomical to do so by conventional methods of machining. A need for new techniques for machining these advanced engineering materials cannot be over-emphasized. In this study, the authors have attempted to explore the feasibility of using an electrochemical spark machining (ECSM) process

Y. P. Singh; Vijay K. Jain; Prashant Kumar; D. C. Agrawal

1996-01-01

418

An Control Method to Man-machine Systems with Brain Machine Interface  

Microsoft Academic Search

In this paper, a new control method to man machine systems with BMI (brain machine interface) is discussed. The man machine systems to support the paralyzed patients is especially targeted. Then, the following assumptions are put on the man-machine systems. In norml circumstances, the system is controlled automatically and the BMI is not worked. The BMI signals are only used

TOHRU KAWABE

419

Force Standard Machines of the National Institutes for Metrology, Vol. 2.  

National Technical Information Service (NTIS)

Technical specifications of force standard machines for metrology are given, including deadweight machines (38 machines); lever-type machines (14); hydraulic machines (11) and accumulated force machines (1). The maximum capacity of the deadweight-machines...

W. Weiler A. Sawla

1984-01-01

420

29 CFR 1910.212 - General requirements for all machines.  

Code of Federal Regulations, 2013 CFR

... false General requirements for all machines. 1910.212 Section 1910.212...AND HEALTH STANDARDS Machinery and Machine Guarding § 1910.212 General requirements for all machines. (a) Machine guarding...

2013-07-01

421

29 CFR 1910.212 - General requirements for all machines.  

Code of Federal Regulations, 2010 CFR

... false General requirements for all machines. 1910.212 Section 1910.212...AND HEALTH STANDARDS Machinery and Machine Guarding § 1910.212 General requirements for all machines. (a) Machine guarding...

2009-07-01

422

29 CFR 1910.212 - General requirements for all machines.  

Code of Federal Regulations, 2010 CFR

... false General requirements for all machines. 1910.212 Section 1910.212...AND HEALTH STANDARDS Machinery and Machine Guarding § 1910.212 General requirements for all machines. (a) Machine guarding...

2010-07-01

423

Vibration sensitivity determination of optical machines  

NASA Astrophysics Data System (ADS)

A variety of measurement and production machines are sensitive to vibration from external and internal sources. Examples of such machines are micro-probes, electron-beam microscopes, laser interferometer, and electron-beam exposure tools. A description is presented of a study conducted to determine the floor vibration limits for a variety of such machines. The procedure employed in the study involved the mechanical excitation of the floor near the machines at various frequencies. The vibration level was increased until an impairment in machine operation could be discerned. The vibration levels were analyzed by a real time spectrum analyzer.

Hundal, M. S.

424

Machine intelligence for robotics applications  

SciTech Connect

The purpose of this paper is to review research in machine intelligence ongoing at the Center for Engineering Systems Advanced Research (CESAR). As a result of initial experimentation with our HERMIES-I mobile robot, hardware and software upgrades were implemented which enable fully asynchronous sonar operation, improved stepper motor control for the sensory platform, and more reliable wheel drive control. The current system, designated as HERMIES-II, is discussed. Successful demonstration of dead-reckoning navigation and the development of a sensor-based exploration and discovery algorithm which can now handle typical maze problems are reported. The development of HERMIES ''brain'' as a hypercube ensemble machine with concurrent computation and associated message passing is described. Algorithms for mapping precedence-constrained task graphs onto a hypercube yield results with high efficiency and proper load balance. A framework for a hybrid uncertainty analysis theory for decision making is described.

Weisbin, C.R.; Barhen, J.; de Saussure, G.; Hamel, W.R.; Jorgensen, C.; Oblow, E.M.; Ricks, R.E.

1985-01-01

425

Rendering for machine vision prototyping  

NASA Astrophysics Data System (ADS)

Machine Vision systems for manufacturing quality inspection are interdisciplinary solutions including lighting, optics, cameras, image processing, segmentation, feature analysis, classification as well as integration with manufacturing process. The design and optimization of the above systems, especially image acquisition setup is mainly driven by experiment. This requires deep know-how and well equipped laboratory, which does not guarantee the optimal development process and results. This paper proposes novel usage of rendering, originating from 3D computer graphics, for machine vision prototyping and optimization. The invented technique and physically-based rendering aids selection or optimization of luminaires, tolerancing of mechanical construction and object handling, robustness predetermination or surface flaw simulation. The rendering setup utilizes mesh modeling, bump and normal mapping and light distribution sharpening with IES data files. The performed light simulation experiments for metal surfaces (face surface of bearing rollers) are validated.

Reiner, Jacek

2008-09-01

426

Multi-valued Boltzmann machine  

SciTech Connect

The idea of Hopfield network is based on the Ising spin glass model in which each spin has only two possible states: up and down. This paper generalizes these ideas to multivalue case based on the XY spin glass model in which each spin can be in any direction in a plane. Simply using the gradient descent method and the analog Hopfield network, two different analog connectionist structures and their corresponding evolving rules are first designed to transform the XY spin glass model to distributed computational models. Since these two structures can easily get stuck in local minima, a multivalued Boltzmann machine is proposed which adopts the discrete planar spin glass model for the local minimum problem. The multivalued Boltzmann machine can be applied to the mobile robot navigation problem by defining proper artificial magnetic field on the traverse terrain. This new approach has shown to have several advantages over existing graph search and potential field techniques. 28 refs.

Lin, C.T.; Lee, C.S.G. [Natl Chiao-Tung Univ., Hsinchu, Taiwan (China)

1995-04-01

427

Predicting Phospholipidosis Using Machine Learning  

PubMed Central

Phospholipidosis is an adverse effect caused by numerous cationic amphiphilic drugs and can affect many cell types. It is characterized by the excess accumulation of phospholipids and is most reliably identified by electron microscopy of cells revealing the presence of lamellar inclusion bodies. The development of phospholipidosis can cause a delay in the drug development process, and the importance of computational approaches to the problem has been well documented. Previous work on predictive methods for phospholipidosis showed that state of the art machine learning methods produced the best results. Here we extend this work by looking at a larger data set mined from the literature. We find that circular fingerprints lead to better models than either E-Dragon descriptors or a combination of the two. We also observe very similar performance in general between Random Forest and Support Vector Machine models.

2010-01-01

428

A neural support vector machine.  

PubMed

Support vector machines are state-of-the-art pattern recognition algorithms that are well founded in optimization and generalization theory but not obviously applicable to the brain. This paper presents Bio-SVM, a biologically feasible support vector machine. An unstable associative memory oscillates between support vectors and interacts with a feed-forward classification pathway. Kernel neurons blend support vectors and sensory input. Downstream temporal integration generates the classification. Instant learning of surprising events and off-line tuning of support vector weights trains the system. Emotion-based learning, forgetting trivia, sleep and brain oscillations are phenomena that agree with the Bio-SVM model. A mapping to the olfactory system is suggested. PMID:20092978

Jändel, Magnus

2010-01-11

429

Predicting phospholipidosis using machine learning.  

PubMed

Phospholipidosis is an adverse effect caused by numerous cationic amphiphilic drugs and can affect many cell types. It is characterized by the excess accumulation of phospholipids and is most reliably identified by electron microscopy of cells revealing the presence of lamellar inclusion bodies. The development of phospholipidosis can cause a delay in the drug development process, and the importance of computational approaches to the problem has been well documented. Previous work on predictive methods for phospholipidosis showed that state of the art machine learning methods produced the best results. Here we extend this work by looking at a larger data set mined from the literature. We find that circular fingerprints lead to better models than either E-Dragon descriptors or a combination of the two. We also observe very similar performance in general between Random Forest and Support Vector Machine models. PMID:20799726

Lowe, Robert; Glen, Robert C; Mitchell, John B O

2010-09-10

430

A micro-machined resonator  

DOEpatents

This invention is comprised of a micro-machined resonator, typically quartz, with upper and lower micromachinable support members, or covers, having etched wells which may be lined with conductive electrode material, between the support members is a quartz resonator having an energy trapping quartz mesa capacitively coupled to the electrodes through a diaphragm; the quartz resonator is supported by either micro-machined cantilever springs or by thin layers extending over the surfaces of the support. If the diaphragm is rigid, clock applications are available, and if the diaphragm is resilient, then transducer applications can be achieved. Either the thin support layers or the conductive electrode material can be integral with the diaphragm. In any event, the covers are bonded to form a hermetic seal and the interior volume may be filled with a gas or may be evacuated. In addition, one or both of the covers may include oscillator and interface circuitry for the resonator.

Godshall, N.A.; Koehler, D.R.; Liang, A.Y.; Smith, B.K.

1991-12-31

431

75 FR 71146 - In the Matter of Certain Machine Vision Software, Machine Vision Systems, and Products Containing...  

Federal Register 2010, 2011, 2012, 2013

...No. 337-TA-680] In the Matter of Certain Machine Vision Software, Machine Vision Systems, and Products Containing Same...the United States after importation of certain machine vision software, machine vision systems, or...

2010-11-22

432

75 FR 60478 - In the Matter of Certain Machine Vision Software, Machine Vision Systems, and Products Containing...  

Federal Register 2010, 2011, 2012, 2013

...No. 337-TA-680] In the Matter of Certain Machine Vision Software, Machine Vision Systems, and Products Containing Same...the United States after importation of certain machine vision software, machine vision systems, or...

2010-09-30

433

34 CFR 395.32 - Collection and distribution of vending machine income from vending machines on Federal property.  

Code of Federal Regulations, 2013 CFR

... false Collection and distribution of vending machine income from vending machines on Federal property. 395.32 Section 395...395.32 Collection and distribution of vending machine income from vending machines on Federal...

2013-07-01

434

Evaluation of coordinate measuring machines  

NASA Astrophysics Data System (ADS)

Positional accuracy, thermal distortion, and load distortion of the coordinate measuring machine (CMM) are among the most important factors contributing to the final accuracy of the inspected tool or gage. The positional accuracy of the CMM is addressed and a method to evaluate the volumetric accuracy of a bridge design CMM work zone (the volumetric space that houses inspection points on a part to be inspected is described.

Russell, R. J.

1982-11-01

435

Media-Augmented Exercise Machines  

NASA Astrophysics Data System (ADS)

Cardio-vascular exercise has been used to mitigate the muscle and cardiac atrophy associated with adaptation to micro-gravity environments. Several hours per day may be required. In confined spaces and long duration missions this kind of exercise is inevitably repetitive and rapidly becomes uninteresting. At the same time, there are pressures to accomplish as much as possible given the cost- per-hour for humans occupying orbiting or interplanetary. Media augmentation provides a the means to overlap activities in time by supplementing the exercise with social, recreational, training or collaborative activities and thereby reducing time pressures. In addition, the machine functions as an interface to a wide range of digital environments allowing for spatial variety in an otherwise confined environment. We hypothesize that the adoption of media augmented exercise machines will have a positive effect on psycho-social well-being on long duration missions. By organizing and supplementing exercise machines, data acquisition hardware, computers and displays into an interacting system this proposal increases functionality with limited additional mass. This paper reviews preliminary work on a project to augment exercise equipment in a manner that addresses these issues and at the same time opens possibilities for additional benefits. A testbed augmented exercise machine uses a specialty built cycle trainer as both input to a virtual environment and as an output device from it using spatialized sound, and visual displays, vibration transducers and variable resistance. The resulting interactivity increases a sense of engagement in the exercise, provides a rich experience of the digital environments. Activities in the virtual environment and accompanying physiological and psychological indicators may be correlated to track and evaluate the health of the crew.

Krueger, T.

2002-01-01

436

The spectre of the machine  

Microsoft Academic Search

There exists a psychological fear of computers and that fear isexpressed in the literature of our society. The basis of this fear,viewed in three related aspects, is the populace's misunderstandingof the machine's function and abilities and capabilities.Literature is the double mirror of society. It reflects theattitudes, trends and mores prevalent in our society. This is theMirror of Reality. There exists

Kathryn Ptacek

1979-01-01

437

Evaluation of coordinate measuring machines  

NASA Astrophysics Data System (ADS)

A method which evaluates large coordinate measuring machines (CMM) and estimates their measuring capabilities within a specified work volume was developed and implemented. Five CMMs were selected for evaluation. The methodology used to evaluate them, along with the test results, were discussed in a previous report. The data reduction method previously used was found to have several restrictions that limited its usefulness. A new method which has been implemented is discussed in this report. Three of the machines previously evaluated have work volumes far in excess of the standards previously used. A larger standard was designed, fabricated, and used to obtain the data required to complete the project goal. This device was used to estimate the precision and uncertainty of the three large CMMs. The results are reported. A technique which uses a small ball plate at several locations to estimate capability was tested on one of the three machines. The results were compared with those obtained with the large ball plate. The results were almost identical, but the recommended calibration method is to use a standard that covers the work zone of the CMM being evaluated.

Russell, R. J.

1985-05-01

438

Can People Think? Or Machines?  

NASA Astrophysics Data System (ADS)

This chapter is about how we might assess the difference between human minds and machine minds. It is divided into two parts. The first briefly explores how machines might decide whether humans are intelligent, and parallels Turing's 1950 article closely. The second explores a hypothetical legal case in somewhat more detail, looking at Turing's Test in a more legal setting. Both explore sources of variation implicit in the format of the test. The two main parts of the chapter are written in different voices, to escape the assumption that the Turing Test is necessarily scientific and philosophical, and to make it possible to explore the implications of positions that cannot be my own - for one reason or another. There are three main players in the imitation game: the machine, the control, and the interrogator or judge. Each plays an active role in the test, and Turing's article (as most that followed) the background and aims of these players deliberately vague. This added strength to the Turing Test - but a strength that makes pinning down the actual nature and intent of the test remarkably hard. In some ways, anybody can do anything in the Turing Test - that is its strength, but also its weakness. This chapter will try to pin down the elusive Turing Test - developing a more elaborate and complete protocol, by drawing on philosophical, scientific, technical, legal, and commonsense assessments of what thinking is, and how we might test for it in practice.

Watt, Stuart

439

On the optimization of machining parameters for milling operations  

Microsoft Academic Search

Owing to the significant role that machining parameters play in performing successful and efficient machining operations, determination of the best or optimum machining parameters is still the subject of many studies. The need to use optimum machining parameters to improve machining efficiency is of greater importance when NC machines with high capital cost are employed. This paper describes development and

M Tolouei-Rad; I. M Bidhendi

1997-01-01

440

Laser-assisted machining of compacted graphite iron  

Microsoft Academic Search

Compacted graphite iron (CGI) is a material currently under study for the new generation of engines, including blocks, cylinder liners, and cylinder heads. Its unique graphite structure yields desirable high strength, but makes it difficult to machine, thus resulting in a machining cost. Laser-assisted machining (LAM) is adopted to improve its machinability and hence machining economics. The machinability of CGI

S. Skvarenina; Y. C. Shin

2006-01-01

441

Cleaning of uranium vs machine coolant formulations  

SciTech Connect

This study compares methods for cleaning uranium chips and the residues left on chips from alternate machine coolants based on propylene glycol-water mixtures with either borax, ammonium tetraborate, or triethanolamine tetraborate added as a nuclear poison. Residues left on uranium surfaces machined with perchloroethylene-mineral oil coolant and on surfaces machined with the borax-containing alternate coolant were also compared. In comparing machined surfaces, greater chlorine contamination was found on the surface of the perchloroethylene-mineral oil machined surfaces, but slightly greater oxidation was found on the surfaces machined with the alternate borax-containing coolant. Overall, the differences were small and a change to the alternate coolant does not appear to constitute a significant threat to the integrity of machined uranium parts.

Cristy, S.S.; Byrd, V.R.; Simandl, R.F.

1984-10-01

442

Coronary Artery Bypass  

MedlinePLUS

... and blood is sent through a heart-lung machine. Unlike other forms of heart surgery, the chambers ... chest. These electrodes are connected to an electrocardiogram machine, which will monitor your heart's rhythm and electrical ...

443

21 CFR Appendix B to Subpart B of... - Scope of Product Coverage  

Code of Federal Regulations, 2010 CFR

...Anesthesia Devices868.5160 Gas machine for anesthesia or analgesia2...cardiographic transducer2 870.2860Heart sound transducer 2Cardiovascular...4220 Cardiopulmonary bypass heart-lung machine console2...

2010-04-01

444

21 CFR Appendix B to Subpart B of... - Scope of Product Coverage  

Code of Federal Regulations, 2010 CFR

...Anesthesia Devices868.5160 Gas machine for anesthesia or analgesia2...cardiographic transducer2 870.2860Heart sound transducer 2Cardiovascular...4220 Cardiopulmonary bypass heart-lung machine console2...

2009-04-01

445

Chip breaking system for automated machine tool  

DOEpatents

The invention is a rotary selectively directional valve assembly for use in an automated turret lathe for directing a stream of high pressure liquid machining coolant to the interface of a machine tool and workpiece for breaking up ribbon-shaped chips during the formation thereof so as to inhibit scratching or other marring of the machined surfaces by these ribbon-shaped chips. The valve assembly is provided by a manifold arrangement having a plurality of circumferentially spaced apart ports each coupled to a machine tool. The manifold is rotatable with the turret when the turret is positioned for alignment of a machine tool in a machining relationship with the workpiece. The manifold is connected to a non-rotational header having a single passageway therethrough which conveys the high pressure coolant to only the port in the manifold which is in registry with the tool disposed in a working relationship with the workpiece. To position the machine tools the turret is rotated and one of the tools is placed in a material-removing relationship of the workpiece. The passageway in the header and one of the ports in the manifold arrangement are then automatically aligned to supply the machining coolant to the machine tool workpiece interface for breaking up of the chips as well as cooling the tool and workpiece during the machining operation.

Arehart, Theodore A. (Clinton, TN); Carey, Donald O. (Oak Ridge, TN)

1987-01-01

446

Development of plasma chemical vaporization machining  

NASA Astrophysics Data System (ADS)

Conventional machining processes, such as turning, grinding, or lapping are still applied for many materials including functional ones. But those processes are accompanied with the formation of a deformed layer, so that machined surfaces cannot perform their original functions. In order to avoid such points, plasma chemical vaporization machining (CVM) has been developed. Plasma CVM is a chemical machining method using neutral radicals, which are generated by the atmospheric pressure plasma. By using a rotary electrode for generation of plasma, a high density of neutral radicals was formed, and we succeeded in obtaining high removal rate of several microns to several hundred microns per minute for various functional materials such as fused silica, single crystal silicon, molybdenum, tungsten, silicon carbide, and diamond. Especially, a high removal rate equal to lapping in the mechanical machining of fused silica and silicon was realized. 1.4 nm (p-v) was obtained as a surface roughness in the case of machining a silicon wafer. The defect density of a silicon wafer surface polished by various machining method was evaluated by the surface photo voltage spectroscopy. As a result, the defect density of the surface machined by plasma CVM was under 1/100 in comparison with the surface machined by mechanical polishing and argon ion sputtering, and very low defect density which was equivalent to the chemical etched surface was realized. A numerically controlled CVM machine for x-ray mirror fabrication is detailed in the accompanying article in this issue.

Mori, Yuzo; Yamauchi, Kazuto; Yamamura, Kazuya; Sano, Yasuhisa

2000-12-01

447

Experiments with the Dragon Machine  

SciTech Connect

The basic characteristics of a self-sustaining chain reaction were demonstrated with the Chicago Pile in 1943, but it was not until early 1945 that sufficient enriched material became available to experimentally verify fast-neutron cross-sections and the kinetic characteristics of a nuclear chain reaction sustained with prompt neutrons alone. However, the demands of wartime and the rapid decline in effort following the cessation of hostilities often resulted in the failure to fully document the experiments or in the loss of documentation as personnel returned to civilian pursuits. When documented, the results were often highly classified. Even when eventually declassified, the data were often not approved for public release until years later.2 Even after declassification and approval for public release, the records are sometimes difficult to find. Through a fortuitous discovery, a set of handwritten notes by ''ORF July 1945'' entitled ''Dragon - Research with a Pulsed Fission Reactor'' was found by William L. Myers in an old storage safe at Pajarito Site of the Los Alamos National Laboratory3. Of course, ORF was identified as Otto R. Frisch. The document was attached to a page in a nondescript spiral bound notebook labeled ''494 Book'' that bore the signatures of Louis Slotin and P. Morrison. The notes also reference an ''Idea LS'' that can only be Louis Slotin. The discovery of the notes led to a search of Laboratory Archives, the negative files of the photo lab, and the Report Library for additional details of the experiments with the Dragon machine that were conducted between January and July 1945. The assembly machine and the experiments were carefully conceived and skillfully executed. The analyses--without the crutch of computers--display real insight into the characteristics of the nuclear chain reaction. The information presented here provides what is believed to be a complete collection of the original documentation of the observations made with the Dragon Machine in early 1945.

R.E. Malenfant

2005-08-12

448

Gang scheduling a parallel machine  

SciTech Connect

Program development on parallel machines can be a nightmare of scheduling headaches. We have developed a portable time sharing mechanism to handle the problem of scheduling gangs of processes. User programs and their gangs of processes are put to sleep and awakened by the gang scheduler to provide a time sharing environment. Time quantum are adjusted according to priority queues and a system of fair share accounting. The initial platform for this software is the 128 processor BBN TC2000 in use in the Massively Parallel Computing Initiative at the Lawrence Livermore National Laboratory.

Gorda, B.C.; Brooks, E.D. III.

1991-12-01

449

Gang scheduling a parallel machine  

SciTech Connect

Program development on parallel machines can be a nightmare of scheduling headaches. We have developed a portable time sharing mechanism to handle the problem of scheduling gangs of processors. User program and their gangs of processors are put to sleep and awakened by the gang scheduler to provide a time sharing environment. Time quantums are adjusted according to priority queues and a system of fair share accounting. The initial platform for this software is the 128 processor BBN TC2000 in use in the Massively Parallel Computing Initiative at the Lawrence Livermore National Laboratory. 2 refs., 1 fig.

Gorda, B.C.; Brooks, E.D. III.

1991-03-01

450

Hypervelocity cutting machine and method  

DOEpatents

A method and machine 14 are provided for cutting a workpiece 12 such as concrete. A gun barrel 16 is provided for repetitively loading projectiles 22 therein and is supplied with a pressurized propellant from a storage tank 28. A thermal storage tank 32,32A is disposed between the propellant storage tank 28 and the gun barrel 16 for repetitively receiving and heating propellant charges which are released in the gun barrel 16 for repetitively firing projectiles 22 therefrom toward the workpiece 12. In a preferred embodiment, hypervelocity of the projectiles 22 is obtained for cutting the concrete workpiece 12 by fracturing thereof.

Powell, James R. (Shoreham, NY); Reich, Morris (Queens, NY)

1996-11-12

451

Free-piston cutting machine  

DOEpatents

A cutting machine includes a gun barrel for receiving a projectile. A compression tube is disposed in flow communication with the barrel and includes a piston therein. A reservoir is disposed in flow communication with the tube and receives a first gas under pressure. A second gas fills the compression tube on a front face of the piston. And, the pressurized first gas is discharged into the tube on a back face of the piston to accelerate the piston through the tube for compressing the second gas, and in turn launching the projectile through the barrel to impact a workpiece.

Ciccarelli, Gaby (East Setauket, NY); Subudhi, Manomohan (East Setauket, NY); Hall, Robert E. (Port Jefferson, NY)

2000-01-01

452

Setup reduction approaches for machining  

SciTech Connect

Rapid setup is a common improvement approach in press working operations such as blanking and shearing. It has paid major dividends in the sheet metal industry. It also has been a major improvement thrust for high-production machining operations. However, the literature does not well cover all the setup operations and constraints for job shop work. This review provides some insight into the issues involved. It highlights the floor problems and provides insights for further improvement. The report is designed to provide a quick understanding of the issues.

Gillespie, L.K.

1997-04-01

453

Light-driven artificial molecular machines  

NASA Astrophysics Data System (ADS)

Artificial molecular machines represent a growing field of nanoscience and nanotechnology. Stimulated by chemical reagents, electricity, or light, artificial molecular machines exhibit precisely controlled motion at the molecular level; with this ability molecular machines have the potential to make significant impacts in numerous engineering applications. Compared with molecular machines powered by chemical or electrical energy, light-driven molecular machines have several advantages: light can be switched much faster, work without producing chemical waste, and be used for dual purposes-inducing (writing) as well as detecting (reading) molecular motions. The following issues are significant for light-driven artificial molecular machines in the following aspects: their chemical structures, motion mechanisms, assembly and characterization on solid-state surfaces. Applications in different fields of nanotechnology such as molecular electronics, nano-electro-mechanical systems (NEMS), nanophotonics, and nanomedicine are envisaged.

Zheng, Yue Bing; Hao, Qingzhen; Yang, Ying-Wei; Kiraly, Brian; Chiang, I.-Kao; Huang, Tony Jun

2010-08-01

454

Safety improvements in high pressure thermal machines  

SciTech Connect

In a thermal machine of the type including a machine body having a main axis extending between a thermal end and a work end, a working fluid at relatively high pressure in a working fluid chamber defined in the body and a displacer element reciprocable within the chamber for subjecting the fluid to a thermodynamic cycle in cooperation with a reciprocable work piston, the improvement is described comprising outer shell means enclosing the machine body for maintaining a substantially sealed atmosphere about the machine body, and diffuser means arranged between the machine body and the outer shell means for diffusing a shock wave traveling towards the outer shell means resulting from explosive failure of the machine body and for shielding the outer shell means against fragments projected upon such failure.

Otters, J.L.

1988-02-09

455

Preliminary study on wilcoxon learning machines.  

PubMed

As is well known in statistics, the resulting linear regressors by using the rank-based Wilcoxon approach to linear regression problems are usually robust against (or insensitive to) outliers. This motivates us to introduce in this paper the Wilcoxon approach to the area of machine learning. Specifically, we investigate four new learning machines, namely Wilcoxon neural network (WNN), Wilcoxon generalized radial basis function network (WGRBFN), Wilcoxon fuzzy neural network (WFNN), and kernel-based Wilcoxon regressor (KWR). These provide alternative learning machines when faced with general nonlinear learning problems. Simple weights updating rules based on gradient descent will be derived. Some numerical examples will be provided to compare the robustness against outliers for various learning machines. Simulation results show that the Wilcoxon learning machines proposed in this paper have good robustness against outliers. We firmly believe that the Wilcoxon approach will provide a promising methodology for many machine learning problems. PMID:18269953

Hsieh, J G; Lin, Y L; Jeng, J H

2008-02-01

456

Electromechanical interaction in a synchronous reluctance machine  

Microsoft Academic Search

Electromagnetic forces on a whirling rotor of a synchronous reluctance machine are studied using time-discretized 2D finite-element analysis. The whirling motion generates eccentricity harmonics in the air-gap field. These harmonics may further induce circulating currents in the windings of the machine. The dynamics of the induced currents is coupled with the dynamics of the rotor, especially, when the machine is

A. Arkkio; A. Sinervo

2010-01-01

457

Hybrid Excitation of the Axial Inductor Machine  

NASA Astrophysics Data System (ADS)

The paper considers the possibility to use permanent magnets in the rotor slots of axial inductor machine with the aim to create a hybrid excitation of such a machine - from the magnets and from the excitation winding which is placed between the stator cores. The hybrid excitation allows the weight and size parameters of the machine to be improved. Under consideration is a 32 kW under-carriage generator 2?B.13.Y1.

Orlova, S.; Pugachov, V.; Levin, N.

2012-01-01

458

Batch mode micro-electro-discharge machining  

Microsoft Academic Search

This paper describes a micro-electro-discharge machining (micro-EDM) technique that uses electrode arrays to achieve high parallelism and throughput in the machining. It explores constraints in the fabrication and usage of high aspect ratio LIGA-fabricated electrode arrays, as well as the limits imposed by the pulse discharge circuits on machining rates. An array of 400 Cu electrodes with 20 ?m diameter

K. Takahata; Y. B. Gianchandani

2002-01-01

459

Multiple lead-electrical discharge machining  

Microsoft Academic Search

Multiple lead-electrical discharge machining (ML-EDM) was investigated to develop the capability and demonstrate the feasibility of applying state-of-the-art electrical discharge machining (EDM) to the manufacturing of mechanical hardware. Two parts selected for the machining tests were a titanium component container and a stainless steel valve mounting plate. Numerous combinations of ML-EDM and conventional EDM tests were conducted on each part,

R. W. Brockhoff

1985-01-01

460

Cylindrical Wire Electrical Discharge Machining Process Development  

Microsoft Academic Search

Results of applying the wire Electrical Discharge Machining (EDM) process to generate precise cylindrical forms on hard, difficult-to-machine materials are presented. A precise, flexible, and corrosion-resistant underwater rotary spindle was designed and added to a conventional two-axis wire EDM machine to enable the generation of free-form cylindrical geometries. A detailed spindle error analysis identifies the major source of error at

Jun Qu; Albert J. Shih; Ron O. Scattergood; Samuel B. McSpadden

461

Model based control of machine tool manipulators  

Microsoft Academic Search

This contribution is concerned with the improvement of dynamic precision for direct-driven servo axes at machine tools. Due to coupling forces and structural vibrations, the dynamic performance of direct-driven machines is still restricted. Therefore, we analysed the effect of kinetic coupling in typical machine tool applications and derived a simplified dynamic model for predicting acceleration-dependent disturbance forces. Special consideration is

Oliver Zirn; Christian Jaeger; Tobias Schöller

2008-01-01

462

Hybrid modelling of machine tool axis drives  

Microsoft Academic Search

The x-axis dynamics of a milling machine where the workpiece and saddle are mounted on supporting slides is considered. A permanent magnet motor, lead screw, ball nut and bearings are employed as the machine, traverse actuator mechanism. Hybrid, distributed–lumped parameter methods are used to model the machine tool x-axis drive system. Inclusion of the spatial configuration of the drive generates

R. Whalley; M. Ebrahimi; A. A. Abdul-Ameer

2005-01-01

463

Desktop 3-axis parallel kinematic milling machine  

Microsoft Academic Search

Parallel kinematic machines (PKM) are still a research-and-development topic in many laboratories although many of them, unfortunately,\\u000a have no PKM at all. Therefore, the use of a desktop educational 3-axis parallel kinematic milling machine is suggested as\\u000a a help in the process of acquiring basic experiences in the field of PKM. The developed desktop educational 3-axis parallel\\u000a kinematic milling machine

Milos Glavonjic; Dragan Milutinovic; Sasa Zivanovic; Zoran Dimic; Vladimir Kvrgic

2010-01-01

464

On-machine dimensional verification. Final report  

SciTech Connect

General technology for automating in-process verification of machined products has been studied and implemented on a variety of machines and products at AlliedSignal Inc., Kansas City Division (KCD). Tests have been performed to establish system accuracy and probe reliability on two numerically controlled machining centers. Commercial software has been revised, and new cycles such as skew check and skew machining, have been developed to enhance and expand probing capabilities. Probe benefits have been demonstrated in the area of setup, cycle time, part quality, tooling cost, and product sampling.

Rendulic, W.

1993-08-01

465

High pressure water jet mining machine  

DOEpatents

A high pressure water jet mining machine for the longwall mining of coal is described. The machine is generally in the shape of a plowshare and is advanced in the direction in which the coal is cut. The machine has mounted thereon a plurality of nozzle modules each containing a high pressure water jet nozzle disposed to oscillate in a particular plane. The nozzle modules are oriented to cut in vertical and horizontal planes on the leading edge of the machine and the coal so cut is cleaved off by the wedge-shaped body.

Barker, Clark R. (Rolla, MO)

1981-05-05

466

Earthquake Machine Lite: Activity 2 of 2  

NSDL National Science Digital Library

This activity continues and compliments the previous Earthquake Machine activity by pointing out the advantages and limitations of the Earthquake Machine model, explaining the causes of earthquakes and extending students' understanding about earthquake generation, occurrence, and prediction through the collection and interpretation of data. It addresses the following questions: How frequently do earthquakes occur?; Are all earthquakes large events?; How frequently do large events occur?; Can earthquakes be predicted?; How does the Earthquake Machine model compare to global data?; and How do scientists strive for objectivity in their results? It uses the Earthquake Machine models and slide presentation from the previous activity and includes homework exercises, teacher background materials, standards alignments, and references.

Hubenthal, Michael

467

Robotized machining systems developed at Gomel Institute  

NASA Astrophysics Data System (ADS)

The development of robotized machining systems at Gomel Institute is discussed. Applications, economic benefits, and technological sophistication are discussed in detail. Effects on productivity are also discussed.

Gulyayev, N. N.

1985-09-01

468

Mobile mining machine and method  

SciTech Connect

A first mobile mining machine for cutting mining tunnels in hard rock, which includes a horizontally swinging wheel-like cutterhead assembly mounted on a crawler and base frame assembly. The cutterhead assembly consists of a transverse horizontal axis wheel-like drum on which are multiple peripherally mounted rolling cutter units. A second mobile mining machine for cutting mining tunnels in hard rock, which includes a horizontally swinging and vertically ranging wheel-like cutterhead assembly mounted on a crawler and base frame assembly. The cutterhead assembly consists of a transverse horizontal axis wheel-like drum on which are multiple peripherally mounted rolling cutter units. A method of cutting mining tunnels in hard rock which includes the steps of providing a wheel-like cutterhead assembly for cutting the hard rock, rotating the cutterhead assembly about its horizontal axis, plunging the rotating cutterhead forward into the hard rock, sweeping the rotating cutterhead assembly sideward in a first horizontal direction through the hard rock, plunging the rotating cutterhead forward into the hard rock, then sweeping the rotating cutterhead sideward in the other horizontal direction, and then repeating the last four steps.

Sugden, D.B.; Kindsuater, J.P.; Moffat, R.B.; Waddell, B.A.

1985-10-22

469

BELM: Bayesian extreme learning machine.  

PubMed

The theory of extreme learning machine (ELM) has become very popular on the last few years. ELM is a new approach for learning the parameters of the hidden layers of a multilayer neural network (as the multilayer perceptron or the radial basis function neural network). Its main advantage is the lower computational cost, which is especially relevant when dealing with many patterns defined in a high-dimensional space. This brief proposes a bayesian approach to ELM, which presents some advantages over other approaches: it allows the introduction of a priori knowledge; obtains the confidence intervals (CIs) without the need of applying methods that are computationally intensive, e.g., bootstrap; and presents high generalization capabilities. Bayesian ELM is benchmarked against classical ELM in several artificial and real datasets that are widely used for the evaluation of machine learning algorithms. Achieved results show that the proposed approach produces a competitive accuracy with some additional advantages, namely, automatic production of CIs, reduction of probability of model overfitting, and use of a priori knowledge. PMID:21257373

Soria-Olivas, Emilio; Gómez-Sanchis, Juan; Martín, José D; Vila-Francés, Joan; Martínez, Marcelino; Magdalena, José R; Serrano, Antonio J

2011-01-20

470

Gas recirculator for acyclic machines  

NASA Astrophysics Data System (ADS)

The present invention relates to acyclic machines of the type using liquid metal collectors, and more particularly to an improvement for retaining the liquid metal in such machines. Radial type acyclic motors and generators generally include a metallic disk rotor rotating on a shaft between electromagnetic stator poles excited by field coils wound concentric with the shaft. Instead of solid brush, current collectors at the rotor periphery, liquid metal collectors are sometimes used to close the electrical current loop between the shaft and the rotor, and an inert pressurized cover gas fills the gaps between the rotating components and the stationary housing. A cover has recirculator in an acyclic generator having liquid metal collectors for reducing entrainment of the liquid metal in the gas. Radial passages in the stator housing provide natural recirculating paths for the cover gas to flow radially outward along the sides of the rotor and return inwardly through the passages. Scoops or lips located inward of the liquid metal collector divert the outward gas flow into the passages to minimize contact of the gas with the liquid metal.

Balsa, T. F.

1985-05-01

471

Fluidjet machining of energetic materials  

SciTech Connect

Fluidjet machining phenomena have been analyzed as a potential method for dismantling nuclear weapons in a way that is environmentally clean, efficient and safe. Preliminary experiments and analyses have revealed that at small standoff distances there is no mass removal from the workpiece, and that far from the nozzle there exists an optimum standoff distance at which the mass removal rate is a maximum. Such results suggest a mass-removal process due to the droplets and ligaments impinging on the material that cause sudden pressure increases in the impact regions. This proposed material-removal mechanism has been addressed theoretically by considering a series of multiple droplet impacts on a material. The calculated results display a series of pressure peaks at the target surface as each of these droplets strikes the material, supporting the plausibility of the proposed mass-removal scenario at the optimum standoff distance. Further experiments and analyses are planned to verify the proposed mechanism of mass removal by means of fluidjet machining processes.

Kang, Sang-Wook; Reitter, T.; Carlson, G. [Lawrence Livermore National Lab., CA (United States); Do, B. [Mason and Hanger-Silas Mason Co., Inc., Amarillo, TX (United States)

1994-01-01

472

Micro-machined resonator oscillator  

DOEpatents

A micro-miniature resonator-oscillator is disclosed. Due to the miniaturization of the resonator-oscillator, oscillation frequencies of one MHz and higher are utilized. A thickness-mode quartz resonator housed in a micro-machined silicon package and operated as a "telemetered sensor beacon" that is, a digital, self-powered, remote, parameter measuring-transmitter in the FM-band. The resonator design uses trapped energy principles and temperature dependence methodology through crystal orientation control, with operation in the 20-100 MHz range. High volume batch-processing manufacturing is utilized, with package and resonator assembly at the wafer level. Unique design features include squeeze-film damping for robust vibration and shock performance, capacitive coupling through micro-machined diaphragms allowing resonator excitation at the package exterior, circuit integration and extremely small (0.1 in. square) dimensioning. A family of micro-miniature sensor beacons is also disclosed with widespread applications as bio-medical sensors, vehicle status monitors and high-volume animal identification and health sensors. The sensor family allows measurement of temperatures, chemicals, acceleration and pressure. A microphone and clock realization is also available.

Koehler, Dale R. (Albuquerque, NM); Sniegowski, Jeffry J. (Albuquerque, NM); Bivens, Hugh M. (Albuquerque, NM); Wessendorf, Kurt O. (Albuquerque, NM)

1994-01-01

473

Micro-machined resonator oscillator  

DOEpatents

A micro-miniature resonator-oscillator is disclosed. Due to the miniaturization of the resonator-oscillator, oscillation frequencies of one MHz and higher are utilized. A thickness-mode quartz resonator housed in a micro-machined silicon package and operated as a telemetered sensor beacon'' that is, a digital, self-powered, remote, parameter measuring-transmitter in the FM-band. The resonator design uses trapped energy principles and temperature dependence methodology through crystal orientation control, with operation in the 20--100 MHz range. High volume batch-processing manufacturing is utilized, with package and resonator assembly at the wafer level. Unique design features include squeeze-film damping for robust vibration and shock performance, capacitive coupling through micro-machined diaphragms allowing resonator excitation at the package exterior, circuit integration and extremely small (0.1 in. square) dimensioning. A family of micro-miniature sensor beacons is also disclosed with widespread applications as bio-medical sensors, vehicle status monitors and high-volume animal identification and health sensors. The sensor family allows measurement of temperatures, chemicals, acceleration and pressure. A microphone and clock realization is also available. 21 figs.

Koehler, D.R.; Sniegowski, J.J.; Bivens, H.M.; Wessendorf, K.O.

1994-08-16

474

Study of the effect of machining parameters on the machining characteristics in electrical discharge machining of tungsten carbide  

Microsoft Academic Search

Electrical discharge machining (EDM) is a process for shaping hard metals and forming deep and complex-shaped holes by arc erosion in all kinds of electro-conductive materials. The objective of this research is to study the influence of operating parameters of EDM of tungsten carbide on the machining characteristics. The effectiveness of the EDM process with tungsten carbide is evaluated in

S. H. Lee; X. P. Li

2001-01-01

475

Mississippi Curriculum Framework for Machine Tool Operation/Machine Shop (Program CIP: 48.0503--Machine Shop Assistant). Secondary Programs.  

ERIC Educational Resources Information Center

|This document, which reflects Mississippi's statutory requirement that instructional programs be based on core curricula and performance-based assessment, contains outlines of the instructional units required in local instructional management plans and daily lesson plans for machine tool operation/machine shop I and II. Presented first are a…

Mississippi Research and Curriculum Unit for Vocational and Technical Education, State College.

476

Mississippi Curriculum Framework for Machine Tool Operation/Machine Shop (Program CIP: 48.0503--Machine Shop Assistant). Secondary Programs.  

ERIC Educational Resources Information Center

This document, which reflects Mississippi's statutory requirement that instructional programs be based on core curricula and performance-based assessment, contains outlines of the instructional units required in local instructional management plans and daily lesson plans for machine tool operation/machine shop I and II. Presented first are a…

Mississippi Research and Curriculum Unit for Vocational and Technical Education, State College.

477

The brushless doubly fed reluctance machine and the synchronous reluctance machine-a comparison  

Microsoft Academic Search

The brushless doubly fed reluctance machine (BDFRM) is related to the better known brushless doubly fed induction machine (BDFIM). Research into doubly fed machines is motivated by the fact that they allow the use of a partially rated inverter in many variable-speed applications. Research into the BDFRM has been largely ignored in comparison to the BDFIM, despite the fact that

Robert E. Betz; Milutin G. Jovanovic

2000-01-01

478

Micro machining glass with polycrystalline diamond tools shaped by micro electro discharge machining  

Microsoft Academic Search

Brittle materials are difficult to mechanically micro machine due to damage resulting from material removal by brittle fracture, cutting force-induced tool deflection or breakage and tool wear. This paper demonstrates the feasibility of micro machining glass materials with polycrystalline diamond (PCD) micro tools that are prepared in a variety of shapes using non-contact micro electro discharge machining. The PCD tools

Chris J Morgan; R Ryan Vallance; Eric R Marsh

2004-01-01

479

Is the brain an effective Turing machine or a finite-state machine?  

Microsoft Academic Search

A theorem presented by Hornik, Stinchcombe, and White (1989) suggested the possibility that connectionist networks could be effectively Turing machines. Levelt (1990) argued that the theorem of Hornik et al. only implies that networks are finite-state machines and are therefore not capable of generating the very unlimited productivity of symbol systems. Yet it can be argued that all real machines,

Frank van der Velde

1993-01-01

480

High Performance Machining: A Practical Approach to High-Speed Machining  

NSDL National Science Digital Library

High-speed machining (HSM) has become a popular topic in CNC machining methodology in recent years. Simply defined, high-speed machining is a methodology to improve machiningthroughput by using higher-than-normal spindle speeds coupled with extraordinarily high feed rates without compromising the quality of the finished part.

Danielson, Scott; Georgeou, Trian; Teo, Adrian

2009-09-17

481

The CNN Universal Machine is as universal as a Turing Machine  

Microsoft Academic Search

It is shown that the simplest integrated circuit implementations of the CNN Universal Machine can play the “game of life”, and are therefore equivalent to Turing Machines. In addition, a constructive proof is given for the direct implementation of general first-order cellular automata on such machines

Kenneth R. Crounse; L. O. Chua

1996-01-01

482

A Simple Universal Turing Machine for the Game of Life Turing Machine  

Microsoft Academic Search

In this chapter we present a simple universal Turing machine which is small enough to fit into the design limits of the Turing machine build in Conway's Game of Life by the author. That limit is 8 symbols and 16 states. By way of comparison we also describe one of the smallest known universal Turing machines due to Rogozhin which

Paul Rendell

2010-01-01

483

Drug Design by Machine Learning: Support Vector Machines for Pharmaceutical Data Analysis  

Microsoft Academic Search

We show that the support vector machine (SVM) classification algorithm, a recent development from the machine learning community, proves its potential for structure-activity relationship analysis. In a benchmark test, the SVM is compared to several machine learning techniques currently used in the field. The classification task involves predicting the inhibition of dihydrofolate reductase by pyrimidines, using data obtained from the

Robert Burbidge; Matthew W. B. Trotter; Bernard F. Buxton; Sean B. Holden

2002-01-01

484

Improving machining performance of wire electrochemical discharge machining by adding SiC abrasive to electrolyte  

Microsoft Academic Search

The use of wire electrochemical discharge machining (WECDM) to slice hard brittle materials has recently been studied because its effectiveness is independent of the mechanical characteristics of the machined materials. Therefore, materials with high hardness, brittleness, strength and electrical insulation, which are difficult-to-cut, can be machined. In ECDM, the electrochemical reaction produces hydrogen bubbles, which accumulate around the cathode. A

C. T. Yang; S. L. Song; B. H. Yan; F. Y. Huang

2006-01-01

485

Modelling the machining parameters of wire electrical discharge machining of Inconel 601 using RSM  

Microsoft Academic Search

Wire electrical discharge machining (WEDM) allowed success in the production of newer materials, especially for the aerospace and medical industries. Using WEDM technology, complicated cuts can be made through difficult-to-machine electrically conductive components. The high degree of the obtainable accuracy and the fine surface quality make WEDM valuable. The right selection of the machining conditions is the most important aspect

M. S. Hewidy; T. A. El-Taweel; M. F. El-Safty

2005-01-01

486

MATC Machine Shop '84: Specific Skill Needs Assessment for Machine Shops in the Milwaukee Area.  

ERIC Educational Resources Information Center

Building on previous research on the future skill needs of workers in southeastern Wisconsin, a study was conducted at Milwaukee Area Technical College (MATC) to gather information on the machine tool industry in the Milwaukee area. Interviews were conducted by MATC Machine Shop and Tool and Die faculty with representatives from 135 machine shops,…

Roberts, Keith J.

487

Evaluation of thermography image data for machine fault diagnosis  

Microsoft Academic Search

A novel approach for fault diagnosis of rotating machine based on thermal image investigation using image histogram features is proposed in this paper. Herein, the machine learning and statistical approach are adopted along with thermal image signal to machine condition diagnosis. Using thermal images, the information of machine condition can be investigated more simply than other conventional methods of machine

Achmad Widodo; Bo-Suk Yang

2010-01-01

488

Design and simulation for mico-hole abrasive flow machining  

Microsoft Academic Search

Abrasive flow machining technology has become an effective way for micro-hole precise machining. In this paper, we design an equipment for abrasive flow machining to achieve precise machining for peculiar parts. The Fluent, fluid dynamics software, is used here to simulate the abrasive flow micro-hole processing state. We can achieve an ideal machining program for abrasive flow through comparative analysis

Junye Li; Weina Liu; Lifeng Yang; Chun Li; Bin Liu; Haihong Wu; Xiaoli Sun

2009-01-01

489

A simple abstract machine for functional first-class continuations  

Microsoft Academic Search

Many kinds of abstract machine have been proposed for executing byte codes of functional languages, such as Landin's SECD machine and Curien's Categorical Abstract Machine, which have been studied for decades from a theoretical viewpoint and applied in the implementation of functional language processors. In this paper, we propose the Simple Abstract Machine (SAM), a simplified SECD machine. The simplification

Keisuke NARITA; Shin-ya NISHIZAKI; Takahisa Mizuno

2010-01-01

490

In-process machine tool vibration cancellation using PMN actuators  

Microsoft Academic Search

At present, the machine tool technology in the US is not in the state-of-the-art of leading international competitors. Conventional machine tools under use are being pushed into their machining accuracy limits. There is a pressing need calling for revitalizing the machine tool industry. This paper presents, a mechatronic system developed for reducing tool vibration during machining. It consists of electrical

Zelalem Eshete; Guangming Zhang

1996-01-01

491

State of the art in wire electrical discharge machining (WEDM)  

Microsoft Academic Search

Wire electrical discharge machining (WEDM) is a specialised thermal machining process capable of accurately machining parts with varying hardness or complex shapes, which have sharp edges that are very difficult to be machined by the main stream machining processes. This practical technology of the WEDM process is based on the conventional EDM sparking phenomenon utilising the widely accepted non-contact technique

K. H Ho; S. T Newman; S Rahimifard; R. D Allen

2004-01-01

492

Mitigation of voltage regulation problem in flux reversal machine  

Microsoft Academic Search

Flux reversal machine (FRM) is a permanent magnet (PM) machine in which the magnets are on the stator, while the rotor consists of laminated steel. Therefore, this machine is simple in construction. Also, it is easier to remove the heat due to losses in PMs from this machine, as compared to conventional PM machines. Recent work on FRM used full

R Vandana; B. G. Fernandes

2011-01-01

493

Collage Machine 1.0  

NSDL National Science Digital Library

Some of our readers no doubt have fond memories of getting out various newspapers, magazines, old art books, and other such materials and creating their own collages on a dreary Saturday morning that seemed to call out for such an indoors activity. While there might not be the same visceral feeling with this online collage machine, it is still definitely worth a visit. Presented with a blank work screen, visitors can peruse the collection of objects offered here, and then drag them onto their workspace. After doing so, the images can be cut up and manipulated in a variety of ways. Some of the objects include a butterfly, a menacing shark, a puppy, traffic signs, a picture window, and a daunting iceberg. As one might imagine, the pedagogical possibilities of such a site are quite interesting and may prove useful in a classroom setting.

494

Storage battery plate wrapping machine  

SciTech Connect

This invention relates to a plate wrapping machine for storage batteries. It comprises an embosser for embossing a flat microporous sheet pulled from a supply reel to obtain a storage battery separator, a plate projector for separating and projecting plates one by one out of a hopper, a separator supplier for supplying the above mentioned embossed separator so as to intersect rectangularly with the projected plate and a separator sealing means for sealing the side parts of the embossed separator folded into two to wrap the plate, and wherein the respective components are operatively connected with one another in an on-line operation. The present invention has an advantage that a storage battery plate can be wrapped with an embossed separator quickly at a high efficiency by saving labor so that the cost of the product may be reduced.

Kuroda, K.; Murata, K.

1980-08-12

495

Mining machine having vibration sensor  

SciTech Connect

This patent describes a mining machine having means for sensing property variations of the materials associated with a seam of a mine comprising: a cutting tool including a member rotatable about an axis, at least one cutter carried by the rotatable member at a point spaced from the axis for cutting material from the seam, a conductor rod carried by the rotatable member and held in releasable engagement with the cutter, the rod extending to the axis of the rotatable member to conduct to the axis, strain waves which are induced by variations in cutter vibration as the cutter encounters property variations of the materials associated with the seam, and a transducer located at the axis of the rotatable member in communication with the conductor rod to convert the strain waves in the rod to electric signals.

Peterson, C.R.

1987-04-07

496

Thermal properties of time machines  

NASA Astrophysics Data System (ADS)

Connections between universes through tunneling space-times could make the multiverse a physical entity able to be observed from our own single universe. In this paper we first study the thermal properties of the static Klein-bottle holes and then consider one of the potentially observable effects from wormholes, ringholes, and nonorientable tunnelings when they are converted into time machines connecting other universes with ours own, that is a randomly varying in space and time thermal radiation which, with an unpredictable cadence, randomly manifested to a far observer as a short, occasional pulse with very high intensity and fluence which would be made of black body phantom or ordinary radiation. We discuss the odds for these bursts of thermal radiation to be eventually observable.

González-Díaz, Pedro F.

2012-05-01

497

Integrated approach to advanced machining  

SciTech Connect

The residual stress state induced by machining in a Ti alloy as function of cutting tool sharpness and depth of cut was predicted and measured. Residual stresses were greater for the dull tool than for the sharp tool. XRD was used to measure the residual stress state of the material; these measurements revealed that the hoop stress increased with depth of cut; however the radial stress decreased with depth of cut. An elastic-plastic model provided a possible explanation for this behavior in that, for small depths of cut, the tool makes multiple passes through the damage subsurface layer. This causes both residual stress components to increase, but the radial stress increases by a much greater amount than the hoop stress.

LeSar, R.A.; Bourke, M.A.M.; Rangaswamy, P.; Day, R.D.; Hatch, D.J.

1997-08-01

498

A new topology of hybrid synchronous machine  

Microsoft Academic Search

Permanent-magnet synchronous machines are able to operate over a wide range of speeds at constant power through the use of control laws allowing for flux weakening. Generally, this is performed by applying a strong demagnetizing current in the d axis, yet such an approach involves the risk of irreversible magnet demagnetization and, consequently, a reduction in machine performance. This paper

Y. Amara; J. Lucidarme; M. Gabsi; M. Lecrivain; A. H. B. Almed; A. D. Akemakou

2001-01-01

499

Analytical Models for Saturated Synchronous Machines  

Microsoft Academic Search

Most equivalent circuit models for synchronous machines have either neglected saturation or used only one saturable reactance which was made a function of one or more machine variables. The approach of this paper is, first, to determine the regions of magnetic saturation and to identify the magnetic flux variable on which each depends. Analytical models are then developed in which

Gordon R. Slemon

1971-01-01

500

Derivation of synchronous machine parameters from tests  

Microsoft Academic Search

This paper describes a test procedure for derivation of synchronous machine parameters. The tests can be conducted with ease and without hazard on generators in utility systems. Unlike textbook methods involving short circuit and slip tests which are inconvenient and hazardous, the proposed method involves simple procedures, which can be implemented in normal operation of the machine.

F. P. de Mello; J. R. Ribeiro

1977-01-01