introduction to basic engineering drawing

... Nhập môn Công nghệ học Phần mềm (Introduction to Software Engineering) Department of Software Engineering Faculty of Information Technology Hanoi University of ... Software Engineering: A Practioner’s Approach 5th Ed., McGraw-Hill, 2001 • R Pressman, Kỹ nghệ phần mềm Tập 1, 2, NXB Giáo dục, Hà Nội, 1997 (Người dịch: Ngơ Trung Việt) • I Sommerville, Software Engineering ... Engineering 5th Ed., Addison-Wesley, 1995 • K Kawamura, Nhập mơn Công nghệ học Phần mềm NXB Kinki-Kagaku, Tokyo, 2001 (Tiếng Nhật) HUT, Falt of IT  Dept of SE, 2001 SE-I.4 Phần I Giới thiệu chung CNHPM

Ngày tải lên: 20/12/2013, 17:15

... of IT  Dept. of SE, 2002 SE-III.1 Nhập môn Công nghệ học Phần mềm Introduction to Software Engineering Department of Software Engineering Faculty of Information Technology Hanoi University of ... bi to n HUT, Falt of Dept of SE, 2002 SE-III.34 Quan h ch ra mi liờn quan ga cỏc i tng d liu Bookstore 1 Orders N Books Cardinality : ch ra nh lng ca mi quan h 1:1 one -to- one 1:N one -to- ... the problem the problem Requirements Requirements elicitation elicitation Build a Build a prototype prototype Create Create analysis analysis models models Develop specification Review Review HUT,

Ngày tải lên: 20/12/2013, 17:15

... a cutoff region of the transistor where resistance is high, and the small collector current is called a collector cutoff current. As usual, a designer never allows voltage to get close to the ... BookBooN.com Introduction to Electronic Engineering 41 Semiconductor Devices Fig. 1.25 illustrates the set of collector characteristic curves under the different values of I B . The bottom curve ... saturation current is to visualize a short circuit between the collector and the emitter. The key step to finding the cutoff voltage is to visualize an open between the collector and emitter.

Ngày tải lên: 26/01/2014, 09:20

... mega kilo hecto deca Symbol Y Z E P T G M Factor 1024 1021 1018 1015 1012 109 106 k h 103 102 da 101 Name deci centi milli micro nano pico femto atto zepto yocto Symbol d c m µ Factor 10-1 10-2 ... separators in order to increase the yield of a reactor The products are selectively pulled out of the reactor as they are made so that the equilibrium in the reactor itself continues to shift towards ... broken into unit operations in order to make them easier to analyze The key thing to remember about them is that the conservation laws apply not only to the process as a whole but also to each

Ngày tải lên: 16/02/2014, 19:20

... Calibration, 172 Correction faton, 172 Chord method, 176 (Cass thre lever, 39 Class wo lever, 38 CComoction factors customary units, 167, 172 CConeetion factor SI nits, 173, Customary units, 23, Ana, ... Conductor 327 ‘Theoretical power, 57,59 Curent, 327 Direct current, 327 Twoeyele S7 Four eel, 57 Insulator, 327 ‘Torque, 71 ‘Ohm's a, 328 Resistance, 327 “Two stoke, 50, 52,53, ‘Two stoke cycle, ... Tractor 8 Tractor etings, #2 ele, 84 Brake, 83 Converting, #4 Dabur, 83,132 Engine SẺ PTO, 83 ‘Tractor testing, 89 Transmission, 61, 71,72 Two de SẼ Units coneelhdion, 7 Posse ratings Tractor,

Ngày tải lên: 17/03/2014, 16:20

... HYSYS ® : An Introduction to Chemical Engineering Simulation For UTM Degree++ Program Mohd. Kamaruddin Abd Hamid HYSYS ® : An Introduction to Chemical Engineering Simulation ... used, but the instructor does not have time to cover it extensively. PREFACE viii Topics Covered HYSYS is a huge and complex simulator, therefore it is impossible to cover all of it ... teaching HYSYS in an introductory chemical engineering course. The topics are presented in an order that allows the students to follow the book chapter after chapter. Every topic is presented completely

Ngày tải lên: 01/04/2014, 10:53

... even ‘paper’ prototype Prototyping… • Quick design focuses on aspects visible to user; features clearly understood need not be implemented • Prototype is tuned to satisfy customer needs - Many ... • Ubiquitous, used in variety of applications - Business, engineering, scientific applications • Simple to complex, internal to public, single function to enterprise-wide, one location to distributed, ... Prototyping • Customer may want prototype itself! • Developer may continue with implementation choices made during prototyping - may not give required quality, performance… • Good tools need to

Ngày tải lên: 28/06/2014, 07:20

... to handle them... is a basic driving force behind software engineering and a major reason for using the different tools and techniques Besides cost and schedule, the other major factor ... entity, as it must change to adapt to our increased understanding about software development and availability of newer technologies and tools Due to this, a process to manage the software ... produced, some amount of... to successfully execute a project, a proper method for engineering the system has to be employed and the project has to be tightly managed to make sure that cost,

Ngày tải lên: 28/06/2014, 07:20

... Components: Capacitors and Inductors Quality Factor and Parasitics in Passive Components Surface-Micromachined Variable Capacitors Bulk-Micromachined Variable Capacitors Micromachined Inductors Microelectromechanical ... Inductors Microelectromechanical Resonators Comb-Drive Resonators... Resonators Beam Resonators Coupled-Resonator Bandpass Filters Film Bulk Acoustic Resonators Microelectromechanical Switches ... introducing him to MEMS (Courtesy of: Engineering. .. and added an entirely new section on reliability and quality assurance We added several references to each chapter to direct the

Ngày tải lên: 10/08/2014, 01:22

... not limited to automotive applications (see Table 1.1). Efforts to develop micromachined components for the control of fluids are just beginning to bear fruit. These could one day lead to the integration ... sensor clipped onto his arm allowed the paramedic to moni - tor blood pressure and cardiac output. The microneedles in the adhesive patch ensured the immediate delivery of medication to the minute ... continued to record his thoughts and feelings on what appeared to be a synthetic white pad. The pen recog - nized the pattern of his handwriting and translated it to text for the laptop computer

Ngày tải lên: 10/08/2014, 01:22

... and actuators were... 1,000ºC, Basic Process Tools 39 both PSG and BPSG soften and flow to conform with the underlying surface topography and to improve step coverage LTO films are ... or photoresist, can be deposited with varying thicknesses from a few nanometers to hundreds of microns. Standard photoresist is spin-coated to a thickness of 1 µm to1 0 µm, but special photoresists ... uniform layers of semiconductors, metals, insulators, and polymers Lithography is a photographic process for printing images onto a layer of photosensitive polymer (photoresist) that is subsequently...

Ngày tải lên: 10/08/2014, 01:22

... 25°C 70º–90°C 115°C 90°C 0º–100°C 20º–80°C 20°C Etch rate (µm/min) 1 to 20 0.5 to 3 0.75 0.5 to 1.5 0.1 to 0.5 1 to 15 0.1 to 10 {111}/{100} Selectivity None 100:1 35:1 50:1 None None None Nitride ... photoresist (or simply “resist”), which is a photosensitive emulsion layer; • Optical exposure to print an image of the mask onto the resist; • Immersion in an aqueous developer solution to dissolve ... immersion in the developer solution. Exposure to light in the 200- to 450-nm range (ultraviolet to blue) breaks down the sensitizer, causing exposed regions to immediately dissolve in developer solution.

Ngày tải lên: 10/08/2014, 01:22

... exposed with ultraviolet light through a mask, causing the silver ions to form atoms. Annealing causes these atoms to aggregate into microscopic particles, which then serve as nucleation sites for ... Photosensitive Epoxy Epoxies have been in use for decades for joining sections of material together and as a structural component of composites. Some epoxies are formulated to be sensitive to ... hydrofluoric acid solution to free the polysilicon plates and beams, thus allowing motion in the plane of and perpendicular to the substrate. Small holes are usually added to large plates to allow the sacrificial

Ngày tải lên: 10/08/2014, 01:22

... sensor showing contours of mechanical stress in response to an applied pressure load. of previously developed individual process steps, or to design a custom process spe - cific to the device or ... provide up to a few newtons of force with applied potentials on the order of a few hundred volts. However, thin-film (<5 µm) piezoelectric actuators can only provide a few millinewtons. Both ... p-type layer acts as an etch stop, thus preserving the shape of the nozzle. These nozzles are oriented perpendicular to the surface of the wafer and are referred to as top shooters or roof shooters

Ngày tải lên: 10/08/2014, 01:22

... center to the substrate, deforms as it vibrates through a full cycle from a circle to an ellipse, back to a circle, then to an ellipse rotated at right angles to the first ellipse, then back to the ... Automotive Applications Al conductor Silicon dioxide Silicon substrate TaAl resistor insulator 1 Grow oxide for insulator, sputter TaAl and Al, pattern Al and TaAl, pattern Al again to ... velocity vector v. If the frame of reference begins to rotate at a rate Ω, this point is then subject to a Coriolis force and a corresponding acceleration equal to 2Ω×v [26]. The vector cross operation

Ngày tải lên: 10/08/2014, 01:22

... magnitude, allowing the actuator resistance to be designed independently of the actuator dimensions. To fabricate the valves, shallow recess cavities are etched in the top and bottom wafers for the clearances ... outside the slot is equal to the outlet pressure p out . The pressure forces are also balanced vertically, as the pressures on the top and bottom surfaces of the slider are equal to the inlet pressure ... small pressure imbalances due to flow are present, so some force is still required to move the slider, limiting opera - tion to a few MPa (hundreds of psi). The actuator is formed entirely in the

Ngày tải lên: 10/08/2014, 01:22

... Palo Alto, California, have offered such products for many years. But the innovation brought forth by MEMS technol - ogy aims to miniaturize these instruments from bench-top dimensions to fit ... incoming photon whose energy is equal to the energy difference between the excited and ground states stimulates the relaxation of an electron to its ground state, thus releasing a photon that is ... piezoelectric rods or voice-coil actuators, to rotate the mirror around the virtual pivot point. The Iolon approach uniquely incorporates an electrostatic rotary microactuator to miniaturize the overall

Ngày tải lên: 10/08/2014, 01:22

... with two key modifications to applications in fiber-optical telecommunications. In order to understand the basic operation of the achromatic design, one needs to refer to the use of phasors for ... add to the null vector 2 c ε Figure 5.19 (a) Phasor description of the diffractive operation of the variable optical attenuator. At the center wavelength, the phasors add to the null vector. ... a structure that are identical to the GLV discussed earlier in this chapter [42]. The basic concept is to use diffraction Fiber-Optic Communication Devices 161 to shift energy away (and thus

Ngày tải lên: 10/08/2014, 01:22

... see in front of you (or in a photo). Two great exercises for training your eye to see are contour drawing and gesture drawing. PENCILING THE CONTOURS In contour drawing, pick a starting point ... are with your tools, the better your drawings will be! ADDING ON Unless you already have a drawing table, you will probably want to purchase a drawing board. It doesn't have to be expensive; ... CHAPTER 1 INTRODUCTION TO BASIC DRAWING Although the age-old art of pencil drawing is the basic foundation of all the visual arts, its elemental beauty allows it to stand on its own. And...

Ngày tải lên: 26/01/2014, 08:20

... Software Engineering, 7th edition. Chapter 1 Slide 2 Objectives  To introduce software engineering and to explain its importance  To set out the answers to key questions about software engineering  ... the customer wants ã Evolution - changing the software in response to changing demands. ©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 1 An Introduction to Software Engineering âIan ... Software Engineering)  Software systems that are intended to provide automated support for software process activities.  CASE systems are often used for method support. Upper-CASE ã Tools to support...

Ngày tải lên: 14/09/2012, 11:26