the design of everyday things ebook download
The design of everyday things don norman
... available from the appearance of the objects the psychology of everyday things And part comes from the ability of the designer to make the operation clear, to project a good image of the operation, ... asked about the new The Design of Everyday Things 1.4 Plate Mounted Over the Dial of the Telephones at the University of Michigan These inadequate instructions are all that most users see (The button ... recorder (VCR) so intimidating The Psychology of Everyday Things This book is about the psychology of everyday things POET emphasizes the understanding of everyday things, things with knobs and dials,...
- 270
- 494
- 7
The design of everyday things
... 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 of ... Homework The purpose of this assignment is to give you a bit of practice with the material presented in the first week of the class - the design of everyday things * find a vending ... Example: Thermostat • Will a room or oven heat (or cool) faster if the thermostat is turned all the way to the maximum setting? Thermostat • Two 'folk' theories of thermostats • timer theory - thermostat...
- 43
- 533
- 0
Getting Things Done: The Art of StressFree Productivity (Ebook)
... Control 211 Part 3: The Power of the Key Principles Chapter 11 The Power of the Collection Habit 223 225 Chapter 12 The Power of the Next-Action Decision Chapter 13 The Power of Outcome Focusing ... incomplete lists of 17 THE ART OF GETTING THINGS DONE I PART ONE unclear things; they haven't yet realized how much and what they need to organize in order to get the real payoff They need to gather everything ... predetermined list of to-dos that the first telephone call or interruption from their boss won't totally undo The "Big Picture" vs the Nitty-Gritty At the other end of the spectrum, a huge number of business...
- 278
- 274
- 3
The design of mat foundations
... below the active soil zone Expansive soils are most prevalent on the Atlantic and Gulf coastal plain and in some areas of the central and western United States Photograph of the construction of the ... Increase of stress under the center of a flexibly loaded rectangular area Therefore, the average pressure increase in the clay layer is, ∆qavg = (92.3 + 4(78.8) + 69.8) = 79 psf The pressure po at the ... 11,000 kN Step Find the soil pressures at the mat invert Find the centroid of the column loads (location of the resultant R) with respect to a new x’y’ coordinate system located at the lower left...
- 65
- 657
- 0
Tài liệu The Design of Rolling Bearing Mountings P2 ppt
... table Therefore, the rigidity of the thrust bearings is especially important To increase the rigidity, the thrust bearings are preloaded to 40 kN by Belleville spring washers at the upper end of the ... operating conditions as the expansion of the rotating parts due to the effects of heat and centrifugal force not cause jamming of the outer rings in the housing Lubrication, sealing The bearings are ... until the roller-and-cage assembly runs under a light preload (5 µm) Surface finish and dimensional accuracy of the workpiece mainly depend on the axial rigidity of the spindle headstock and of the...
- 20
- 528
- 0
Tài liệu The Design of Rolling Bearing Mountings P1 pptx
... 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 upper thrust bearing The radial ... kW; range of speed 11 2,240 min–1 Machining of the housing bore is simplified in that the nominal outside diameters of the radial and thrust bearings are the same The O.D tolerance of the angular ... Bearing selection The selection of the bearings is primarily based on the main thrust, which is directed downwards It is made up of the weight of the rotor and and pump impeller (4 kN), the pump thrust...
- 30
- 602
- 1
Science of everyday things vol 2 physics
... considering the direction they are traveling at the head of the previous one Then it is possible to draw a vector from the tail of the first to the head of the last This is the sum of the vectors, ... the horizontal line of reference, and the y-axis the vertical line of reference Hence, the coordinate (0, 0) designates the point where the x- and y-axes meet All numbers to the right of on the ... speed of relative motion The denominator of this equation will always be less than one, and the greater the value of v, the smaller the value of the denominator This means that at a speed of c, the...
- 365
- 499
- 0
Tài liệu The Design Of Manufacturing Systems P2 docx
... context of the product The concepts of feature flexibility and feature importance can be used to reduce the redesign solution search space The problem of ranking of the redesign solutions (on the ... so that the designer can easily interact with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) ... Evaluation Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of the manufacturing technology The designer then tries to find out if the design can be...
- 20
- 500
- 0
Tài liệu The Design Of Manufacturing Systems P1 pptx
... 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 ... for the production of each chemical We might then contemplate the in-house production of some of the required ingredients, forcing us to consider another tier of ingredients and by-products The ... limited The case of shut down of an existing plant results when the variable Wit takes a value of zero after a given time period t The economics of shut down can be modeled by the inclusion of the...
- 30
- 477
- 0
Tài liệu The Design of Rolling Bearing Mountings P1 docx
... 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 upper thrust bearing The radial ... kW; range of speed 11 2,240 min–1 Machining of the housing bore is simplified in that the nominal outside diameters of the radial and thrust bearings are the same The O.D tolerance of the angular ... Bearing selection The selection of the bearings is primarily based on the main thrust, which is directed downwards It is made up of the weight of the rotor and and pump impeller (4 kN), the pump thrust...
- 40
- 442
- 1
Tài liệu The Design of Rolling Bearing Mountings P2 pdf
... roughening of the surfaces (increased running noise) Work end Bearing dimensioning The size of the bearings is dictated by the shaft diameter, which in turn is based on the anticipated vibrations The ... in the rolling gap In order to still achieve the thickness tolerances of the sheets in the micrometer range, the deflection is compensated for by inclining of rolls and and by counterbending of ... this end The two spindle bearings FAG B7030E.T.P4S.UL are mounted in O arrangement The bearings of the UL universal design are lightly preloaded by clamping the inner rings axially The bearing...
- 10
- 543
- 1
Tài liệu The Theory of the Design of Experiments doc
... more frequently than “theory of evolution” in the scientific literature Why does the phrase “theory of evolution” appear nearly 16 times as frequently as “theory of ecology” in the scientific literature ... eschew the phrase the theory of evolution.” Granted, evolution is a theoretically more cohesive field than ecology: Genes, the fundamental units of evolution, are uniquely defined in terms of their ... other things, to explain the existence of large amounts of so-called junk DNA, but some of this DNA now appears to have a biological function Many biologists may argue that the modern synthesis—the...
- 2
- 437
- 0
Tài liệu The Design Of Manufacturing Systems P2 pptx
... context of the product The concepts of feature flexibility and feature importance can be used to reduce the redesign solution search space The problem of ranking of the redesign solutions (on the ... so that the designer can easily interact with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) ... Evaluation Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of the manufacturing technology The designer then tries to find out if the design can be...
- 20
- 465
- 0
Tài liệu The Design Of Manufacturing Systems P1 docx
... 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 ... for the production of each chemical We might then contemplate the in-house production of some of the required ingredients, forcing us to consider another tier of ingredients and by-products The ... limited The case of shut down of an existing plant results when the variable Wit takes a value of zero after a given time period t The economics of shut down can be modeled by the inclusion of the...
- 30
- 534
- 0
Chapter 15 introduction to the design of electric machinery
... between the tooth Thus wstR = rstθ st (15.2-31) The width of slot between the base of the tips is taken as the average of the distance of the chord length of the inner corners of the tooth tips at the ... that the reciprocal of wsiR is set to the average of the reciprocals of the chord lengths between inner corners of slot at the top of the slot (under the tooth tip) and the outer corners of the ... leo is the end winding offset, which is the amount of overhang of the end winding between the end of the stator stack and the end winding bundle The end winding offset is a function of the manufacturing...
- 40
- 482
- 0
Tài liệu The Design of Prestressed Concrete Bridges ppt
... out of the tumult of data which includes: • • • • • • • • the physical characteristics of the site; the technical aspects concerned with the strength of materials and the theory of structures; the ... for the shape and size of the cut-out The final judgement on a design must rest with the combined response of public and profession The choice of a solution that is expressive of the flow of forces ... reduce the thrust of the roof, it is made of lightweight concrete, of which the density reduces towards the crown Also, the underside of the roof is relieved by caissons, which fulfil the three...
- 606
- 650
- 1
Tài liệu SCRIBE: The design of a large-scale event notification infrastructure? doc
... the roles of these messages are described in the next sections The following variables are used in the pseudocode: topics is the set of topics that the local node is aware of, msg.source is the ... for topic ½½¼¼ The subscription of node ¼½½½ causes the other two nodes along the route to become forwarders for the topic, and causes them to add the preceding node in the route to their children ... locate the rendez-vous point of a topic If the publisher is aware of the rendez-vous point’s IP address then the PUBLISH message can be sent straight to the node If the publisher does not know the...
- 13
- 631
- 0
Báo cáo khoa học: "THE DESIGN OF THE KERNEL ARCHITECTURE FOR THE EUROTRA* SOFTWARE" pptx
... 1982) The elements of the vocabulary of a control language are names of PSs, and the well-formed strings of the language define just those sequences of PS applications which are allowed The user ... It follows that the generator must provide compilations of these defintions in the language of the kernel machine The implementation of the control generator is an adaptation of B a d e n ' s ... know of no language as suitable for the description of data as FP for the description of control The reason is that at this moment, we are insufficiently confident of the basic character of data...
- 10
- 557
- 0
Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các nguyên tắc biên soạn khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25