the design of everyday things pdf 2013

... Manipulation Design of Everyday Things • It examines the effect of poor design and equipment failure on human behavior • It covers user-centered design, on everyday things and on everyday actions Design ... presented in the first week of the class - the design of everyday things. * find a vending machine on campus or surrounding * note down where it is located and what kind of machine it is (pop, coffee, ... Interface Design and Programming CS422 Luc Renambot renambot@uic.edu The Design of Everyday Things Week 1 Homework The purpose of this assignment is to give you a bit of practice with the material

Ngày tải lên: 10/05/2015, 14:31

... location 3) at the coupling end of the input shaft and the spher- ical roller thrust bearing 29464E (bearing location 9) at the output end of the output shaft. Based on the index of dynamic stressing ... by the rolling elements The logarithmic profile of the rollers is especially adapted to the stress resulting from shaft deflection Lubricating holes in the gear wheel of the ... preloaded by springs. The preload ensures that the thrust bearing rollers do not lift off the raceways when the load changes but keep rolling without slippage. The hous- ing washer of the spherical roller

Ngày tải lên: 11/08/2014, 05:22

... of a passenger ropeway 75 Rope sheave (underground mining) These sheaves are arranged in the head frames of the pits. The rope fastened to the cage runs from the drive sheave or the drum of the ... to the ship. The slewing gantry with the crane superstructure is supported on the crane pillar. The bearing mounting has to take up the weight of the superstructure and the payload. Since the ... preloading, the de- sign is of the floating mounting type. The outer rings are securely locked via the two covers by means of a spacer ring. The centre lip of sleeve H is slightly nar- rower than the

Ngày tải lên: 11/08/2014, 05:22

... the other under load. The term "dynamic" does not refer, therefore, to the effect of the load but rather to the operating condition of the bear- ing. The magnitude and direction of the ... a way that the pressure cone apex of the left-hand bearing points to the left and the pressure cone apex of the right-hand bearing points to the right. With the O arrangement one of the bearing ... Glossary Load angle The load angle ␤ is the angle between the resultant applied load F and the radial plane of the bearing. It is the resultant of the radial component F r and the axial component

Ngày tải lên: 11/08/2014, 05:22

... of a passenger ropeway 75 Rope sheave (underground mining) These sheaves are arranged in the head frames of the pits. The rope fastened to the cage runs from the drive sheave or the drum of the ... load of 1,000 kN plus a safety margin of 10 %, the index of. .. with the swivelling of the load The bearing is adjusted against the collar at the hook shaft by means of a ... since the bearing which accommodates the. .. the weight of the payload acts vertically downward, the load is pure thrust Therefore, loose radial guidance of the shaft in the

Ngày tải lên: 13/08/2014, 05:21

... accuracy of the workpiece mainly depend on the axial rigidity of the spindle headstock and of the rotary table. Therefore, the rigidity of the thrust bear- ings is especially important. To increase the ... conditions as the expansion of the rotating parts due to the effects of heat and centrifugal force do not cause jamming of the outer rings in the housing. Lubrication, sealing The bearings are ... temperature of 220 °C .The inner rings and the roll body can be ground together due to the fact that the inner rings of the cylindrical roller bearings – in contrast to those of spherical

Ngày tải lên: 25/12/2013, 05:17

... load of 130 kN is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are supported by the ... reason the brief texts concentrate on the roll- ing bearing aspects of the applications. The operation of the machine allows conclusions to be drawn about the operating conditions which dictate the ... sealing The size of the bearings is primarily based on the spindle rigidity required, i e on the largest possible spindle diameter The fatigue life of the bearings... dismounting of

Ngày tải lên: 25/12/2013, 05:17

... development of a place 35 Main subjects: a b c d e Determinants of the image of a place How to measure the image What elements can guide the designing of the image for ... Priinciples of Marketing 10 " Therefore: # Customers’ benefits are of utmost importance. # Creating benefits for the place on the basis of custormers’ benefits. # Marketing Places should be the ... Priinciples of Marketing 12 $ Select a target market on the basis of: - Possibility of highest competitiveness to offer greatest benefits to customers. - Receiving a certain number of customers to the

Ngày tải lên: 16/01/2014, 11:37

... GDP measures the dollar value of all goods and services produced within the borders of the United States, regardless of who owns the assets or the nationality of the labor used ... Definition: The Producer Price Index (PPI) measures the average price of a fixed basket of capital and consumer goods at the wholesale level There... 31 of 39 ] The Pocketbook Of Economic ... Economic Indicators... reduces the prospect of inflation Source: The Census Bureau of the Department of Commerce Availability: Around the 26th of the month at 8:30am ET Data for

Ngày tải lên: 17/01/2014, 03:20

... [...]... the realm of the dead — as spectators They looked on as the souls of the dead were being judged and they witnessed the torment of those who failed to pass the tests of ... taui ( the two lands”) The northernmost area, where the waters fan out into streams in a triangular-shaped region, is known as the Delta, the name of the fourth letter of the Greek ... crumbled under the formidable weight of the Roman invasion in 30 BC, which brought the end of ancient. .. architecture in the form of the construction of the pyramids During

Ngày tải lên: 17/01/2014, 05:20

... with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) is the ranking of the ... aesthetics, etc.) for having the feature on the part model Each of these reasons have a different degree of importance depending on the context of the product The concepts of ... reduce the redesign solution search space The problem of ranking of the redesign solutions (on the reduced redesign solution set) can then be formulated... implementing many of those

Ngày tải lên: 19/01/2014, 18:20

... know the prices of chemicals in the various markets and the operating costs of processes, the problem is then to decide the operating level of each process and amount of each chemical in the list ... chop off the solution point from the space of the LP relaxation polyhedron The process is repeated, thereby reducing the gap between the MILP and its LP relaxation... follows The ... restricting the dispersion of the. .. axis of the selected branching variable The subproblems are maintained in a list In each iteration, the procedure selects one of these subproblems

Ngày tải lên: 19/01/2014, 18:20

... all their shots on the scorecard. What do you think of that person? Would you, or do you, trust them off the course? The game of leadership is no different. Leaders often find themselves in the ... making. Sometimes, I would be in the position of being in the right place at the wrong time. At other times, I would be in the wrong place at the right time. The measure of me, she said, will be how ... the old man passes away. The marine ends his bedside vigil and advises the nurse of the old man’s death. And then he asks, ‘‘Who was that old man?’’ The nurse is stunned, ‘‘Why, he’s your father.’’ ‘‘No,

Ngày tải lên: 21/01/2014, 21:20

... a sand trap next to the green. He blasted out of the sand, his ball landed on the green, and then rolled into the hole. Birdie, match, and the money! The pro walked over to the sand trap where ... was carrying was a single club, a 5-iron. He used it off the tee, on the fairway, and on the greens. He drew a lot of stares. At the end of the day, Dick had shot a 91, Chuck had a 107, and Jim ... a foot-and-a-half wide. The British nick- named it, ‘‘Big Bertha.’’ Golfers know the rest of story. The Calloway ‘‘Big Bertha’’ was among the first, if not the first, of the over-sized drivers now

Ngày tải lên: 21/01/2014, 21:20

... mainly depend on the axial rigidity of the spindle headstock and of the rotary table Therefore, the rigidity of the thrust bearings is especially... with the index of dynamic stressing ... selection The axial load of 130 kN is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are ... The size of the bearings is primarily based on the spindle rigidity required, i e on the largest possible spindle diameter The fatigue life of the bearings... operation of the

Ngày tải lên: 23/01/2014, 04:20

... with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) is the ranking of the ... aesthetics, etc.) for having the feature on the part model Each of these reasons have a different degree of importance depending on the context of the product The concepts of ... reduce the redesign solution search space The problem of ranking of the redesign solutions (on the reduced redesign solution set) can then be formulated... implementing many of those

Ngày tải lên: 25/01/2014, 13:20

... common, as do the difficult things. When things are visible, they tend to be easier The Design of Everyday Things real needs of the user? I expected my students to visit the homes of potential ... (VCR) so intimidating. The Psychology of Everyday Things This book is about the psychology of everyday things. POET empha- sizes the understanding of everyday things, things with knobs and dials, ... Rotating the knob with the pictures of the speaker at either side makes the sound come entirely out of the front speakers (when the knob is all the way over to one side), entirely out of the rear...

Ngày tải lên: 26/05/2014, 07:46

... Yet the cumulative effect of these small changes can radically improve the design. It is the exact reverse of the normal notion of software decay. With refactoring you find the balance of work ... this is the section of the book you'll come back to often. In this book I describe the fruit of a lot of research done by others. The last chapters are guest chapters by some of these people. ... modifications to the code. Reducing the amount of code won't make the system run any faster, because the effect on the footprint of the programs rarely is significant. Reducing the amount of code...

Ngày tải lên: 01/08/2014, 09:20

... reason the brief texts concentrate on the roll- ing bearing aspects of the applications. The operation of the machine allows conclusions to be drawn about the operating conditions which dictate the ... roughening of the surfaces (increased running noise). Bearing dimensioning The size of the bearings is dictated by the shaft diame- ter, which in turn is based on the anticipated vibra- tions. The bearing ... grinding the bearing inner rings and the roll body to finished size in one setting at a roll surface tempera- ture of 220 °C .The inner rings and the roll body can be ground together due to the fact...

Ngày tải lên: 23/01/2014, 04:20

... residues. Analysis of the distribution of the electrostatic potential on the surface of the molecule reveals the ampiphilic character of the helix (Fig. 4A). Schematic representation of the charge distribution ... rather helical structure (84% of residues), which is considered to be the active conformation of the hormone [38,40]. The changes engineered in the sequence of the peptide, either through the ... imposed by the introduction of the novel residues in the sequence of the molecule and the differences between the CRH analogue and the native structure [15] are also discussed. The major goal of our...

Ngày tải lên: 17/03/2014, 10:20