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Cube inscribed in sphere of radius Side of cube is

SAT II MATH EPISODE 2 PART 4 POTX

SAT II MATH EPISODE 2 PART 4 POTX

2. The correct answer is (A). 3. The correct answer is ( C ). 4. The correct answer is ( E ). The locus of points 4" from a given line is a cylindrical surface of radius 4" with the given line as axis. The locus of points 4" from a given point is a sphere of 4" radius with the given point as center. The intersection of these two loci is a circle.
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ASSESSMENT OF ANTIBIOTIC RESISTANCE OF ESCHERICHIA COLI AND BACTERIAL CONTAMINATION OF ICE SOLD IN CAN THO CITY, VIET NAM

ASSESSMENT OF ANTIBIOTIC RESISTANCE OF ESCHERICHIA COLI AND BACTERIAL CONTAMINATION OF ICE SOLD IN CAN THO CITY, VIET NAM

This study aimed to investigate the bacterial contamination of flake and cube ice being used daily in the community. Thirty-one ice samples were collected from different areas in the city of Can Tho, Vietnam. The enumeration of total aerobic mesophilic counts, presence of coliforms and Escherichia coli (E. coli) and determination of antibiotics resistance of E. coli isolates were examined. The results indicated that total aerobic mesophilic counts ranged from 2.5 to 6.2 log CFU/mL and there was significant difference between the total aerobic mesophilic counts found in flake and cube ice (p < 0.05). Coliforms and E. coli present on the flake and cube ice samples were 93.55 % and 58.06 %, respectively. A total of 39 E. coli isolates were tested against fifteen antibiotics, 74.36 % of which were multi-drug resistant to three to thirteen antibiotics. High prevalence of resistance was to Ampicillin (79.49 %), Cefotaxime (69.23 %), Ceftazidime (46.15 %), Tetracycline (56.41 %), Sulfamethoxazole/Trimethoprim (46.15 %), Colistin (20.51 %), etc. As E. coli is a hygiene indicator and a candidate vehicle for the transfer of antibiotic resistance gene, it is highly recommended using clean and potable water in ice making as well as preventing the spread of antibiotic resistant bacteria.
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DESIGNATION: C 185 – 01 - AIR CONTENT OF HYDRAULIC CEMENT MORTAR1 PPSX

DESIGNATION: C 185 – 01 - AIR CONTENT OF HYDRAULIC CEMENT MORTAR1 PPSX

9.4 Mass per 400 mL of Mortar—When the quantity of mixing water has been found that produces a flow of 87 1 ⁄ 2 6 7 1 ⁄ 2 %, immediately determine the mass per 400 mL of mortar, using the mortar remaining in the mixing bowl after the flow has been determined. In the determination of the mass per 400 mL, do not use the portion of the mortar used in the flow determination. Using the spoon, place the mortar gently into the 400–ml measure in three equal layers. Tamp each layer 20 times around the inner surface of the measure. For the final layer of mortar, overfill the 400–ml measure approximately 20 mm. The position of the tamper shall be that: the broad side of the tamper is parallel to the radius and is perpendicular to the inner surface of the measure. Each layer is tamped in one complete revolution (rotation) with only sufficient pressure to adequately fill the measure and eliminate voids within the mortar. After the measure has been filled and tamped in the above prescribed manner, tap the sides of the measure lightly with the side of the tapping stick, one each at five different points at approximately equal spacing around the outside of the measure, in order to preclude entrapment of extraneous air (Note 3). No obvious space shall be left between the mortar and the inner surface of the measure as a result of the tamping operation. Then cut the mortar off to a plane surface, flush with the top of the measure, by drawing the straightedge with a sawing motion across the top of the measure, making two passes over the entire surface, the second pass being made at right angles to the first. If, in the striking-off operation, loose sand grains cause the straightedge to ride above the top surface of the measure, these grains shall be removed, and the operation repeated. Complete the entire operation of filling and striking off the measure within 1 1 ⁄ 2 min. Wipe off all mortar and water adhering to the outside of the measure. Determine the mass of the measure and its contents. Subtract the mass of the container, and record the mass of the mortar in grams.
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Assessment of antibiotic resistance of escherichia coli and bacterial contamination of ice sold in Can Tho city, Viet Nam

Assessment of antibiotic resistance of escherichia coli and bacterial contamination of ice sold in Can Tho city, Viet Nam

This study aimed to investigate the bacterial contamination of flake and cube ice being used daily in the community. Thirty-one ice samples were collected from different areas in the city of Can Tho, Vietnam. The enumeration of total aerobic mesophilic counts, presence of coliforms and Escherichia coli (E. coli) and determination of antibiotics resistance of E. coli isolates were examined. The results indicated that total aerobic mesophilic counts ranged from 2.5 to 6.2 log CFU/mL and there was significant difference between the total aerobic mesophilic counts found in flake and cube ice (p < 0.05). Coliforms and E. coli present on the flake and cube ice samples were 93.55 % and 58.06 %, respectively. A total of 39 E. coli isolates were tested against fifteen antibiotics, 74.36 % of which were multi-drug resistant to three to thirteen antibiotics. High prevalence of resistance was to Ampicillin (79.49 %), Cefotaxime (69.23 %), Ceftazidime (46.15 %), Tetracycline (56.41 %), Sulfamethoxazole/Trimethoprim (46.15 %), Colistin (20.51 %), etc. As E. coli is a hygiene indicator and a candidate vehicle for the transfer of antibiotic resistance gene, it is highly recommended using clean and potable water in ice making as well as preventing the spread of antibiotic resistant bacteria.
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LEGO MINDSTORMS DARK SIDE ROBOTS TRANSPORTS AND CREATURES POTX

LEGO MINDSTORMS DARK SIDE ROBOTS TRANSPORTS AND CREATURES POTX

Foreword xi This book is the result of a lifetime exploring the world of LEGO. As a kid, I loved taking mechanical things apart to figure out how they worked, then either putting them back together or using the parts to invent something new, so I really enjoyed playing with LEGOs—despite the fact that the things I built often fell apart! Eventually, though, I grew out of them. Several years after I grew out of this first LEGO phase, LEGO introduced the TECHNIC line of LEGOs, a superior set of building parts allowing sturdy structures and compli- cated designs with gears, levers, and all kinds of moving mechanics, and then introduced the MINDSTORMS line. Two and a half years ago, my wife got me the LEGO MINDSTORMS Dark Side Developer Kit for Christmas—I immedi- ately built the AT-AT walker and was hooked on LEGOs all over again. A few months later, I went out and got the Robot Invention System 1.5, and thus began my second LEGO phase. LEGO’s TECHNIC and MINDSTORMS kits have allowed me to pursue both my passion for building with LEGOs and my interest in all things mechanical.
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MASTER GMAT 2010 PART 31 DOC

MASTER GMAT 2010 PART 31 DOC

determine altitude (a), draw a vertical line segment connecting point A to BC, which creates a 45°-45°-90° triangle. The ratio of the triangle’s hypotenuse to each leg is = 2:1. The hypotenuse AB 5 2. Thus, the altitude (a) of ABCD is 2 = 2 , or = 2. Accordingly, the area of
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BÁO CÁO HÓA HỌC:

BÁO CÁO HÓA HỌC: " RESEARCH ARTICLE A FIXED POINT THEOREM BASED ON MIRANDA UWE SCH¨ FER A" DOC

Then, f ( x ) = 0 has a solution in Ω . For n = 1, Theorem 1.1 reduces to the well-known intermediate-value theorem. Mi- randa proved his theorem using the Brouwer fixed point theorem. Using the Brouwer degree of a mapping, Vrahatis gave another short proof of Theorem 1.1 (see [ 2 ]). Follow- ing this proof it is easy to see that Theorem 1.1 is also true, if L is dependent of i ; that is, Ω can also be a rectangle and need not to be a cube. Even some L i can be zero. Very often, the theorem of Miranda is stated as in the following corollary (see also [ 3 , 4 ]), which is not the theorem of Miranda in its original form, but a consequence of it.
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MICROSOFT SQL SERVER 2008 R2 UNLEASHED  P211 PPTX

MICROSOFT SQL SERVER 2008 R2 UNLEASHED P211 PPTX

You are now ready to complete the Aggregation Design Wizard. The final step is to either process this aggregation or save your results and process it later. You should choose to process this aggregation now and then click Finish (see Figure 51.45). The Process Progress dialog appears immediately, and you get to watch the full extent of the cube’s aggregation partitions being built (that is, populated). Aggregation SQL queries are actually created under the covers to populate all these aggregation levels (which are implementing your design levels). It’s nice to have Microsoft dynamically create these complex queries for this critical performance optimization step so you don’t have to worry about it yourself.
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APPLIED SURGICAL PHYSIOLOGY VIVAS   PART 5 DOCX

APPLIED SURGICAL PHYSIOLOGY VIVAS PART 5 DOCX

in the alveolar pressure to above atmospheric. This leads to airflow out of the lungs 䊉 The point just before inspiration marks the eq uilibrium p o in t . The tendency of the lung to collapse due to its elastic recoil is prevented by the forces that hold the chest wall in position. The constant elastic recoil of the lung leads to a resting intrapleural pressure of 5 cmH 2 O below
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Mobile Robots Perception & Navigation Part 2 potx

Mobile Robots Perception & Navigation Part 2 potx

outdoors such as “Go down to the big tree and turn left.” Inherent in such a paradigm is the robot being able to recognize a “big tree” and do it in unstructured environments without too many pre-mapped fixed landmarks. Ultimately we envision mobile robots that unobtrusively mix in with pedestrian traffic and hence traveling primarily at a walking pace. With regard to sensors this is a different problem from robots designed to drive on roadways, since the necessary range of sensors is tied to the speed of the robot. It’s also important to note that small mobile robots that are intended to mix with pedestrian traffic must normally travel at the same speed as the pedestrians, even if they occasionally scurry quickly down a deserted alley or slow way down to traverse a tricky obstacle, because people resent having to go around a slow robot while they are also easily startled by machines such as Segways that overtake them without warning. At walking speeds the range of sonar at about 50kHz is optimal, and there are none of the safety concerns one might have with lidar, for example. This type of sonar is precisely what bats use for echolocation; the goal of our research is to employ sonar sensors to allow mobile robots to recognize objects in the everyday environment based on simple signal processing algorithms tied to the physics of how the sonar backscatters from various objects. Our primary interest is for those sensors that can function well outdoors without regard to lighting conditions or even in the absence of daylight. We have built several 3D sonar scanning systems packaged as sensor heads on mobile robots, so that we are able to traverse the local environment and easily acquire 3D sonar scans of typical objects and structures. Of course sonar of the type we’re exploring is not new. As early as 1773 it was observed that bats could fly freely in a dark room and pointed out that hearing was an important component of bats’ orientation and obstacle avoidance capabilities (Au, 1993). By 1912 it was suggested that bats use sounds inaudible to humans to detect objects (Maxim, 1912) but it wasn’t until 1938 that Griffin proved that bats use ultrasound to detect objects (Griffin, 1958).
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DANH SÁCH GAME CHẠY ĐƯỢC TRÊN WINDOWS 7

DANH SÁCH GAME CHẠY ĐƯỢC TRÊN WINDOWS 7

- Shadow of Chernobyl * Sauerbraten/Cube 2 engine * Serious Sam 2 * Silent Hunter 4 * Silkroad Online Test trên nền x86 và x64 * Sim City 4 Deluxe Edition Test trên nền x86 * Sins of a S[r]
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designing analog chips

designing analog chips

Reverse Current Gain : You may be convinced that you will never operate a transistor with the collector and emitter interchanged, but just in case provided the parameters BR, NR, VAR, IKR and TR . Base-Collector Diode : Here again we have the basic diode Spice parameters, again renamed: ISC (IS), NC (N), RC (RS), XTF (XTI), CJC (CJO), VJC (VJ), MJC (M) and TF (TT). The last one is the transit time (now through the base to the collector) which accounts for any delay which cannot represented by capacitance alone; it is embellished by ITF (which makes TF dependent on current), VTF (showing dependence of TF on base- collector voltage) and PTF (an excess phase at a frequency 1/(TFx2p)).
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BÁO CÁO HÓA HỌC    RESEARCH ARTICLE LOW COMPLEXITY MULTIPLE DESCRIPTION CODING OF VIDEO BASED ON 3D BLOCK TRANSFORMS  PPT

BÁO CÁO HÓA HỌC RESEARCH ARTICLE LOW COMPLEXITY MULTIPLE DESCRIPTION CODING OF VIDEO BASED ON 3D BLOCK TRANSFORMS PPT

Copyright © 2007 Andrey Norkin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 1. INTRODUCTION Nowadays, video is more often being encoded in mobile devices and transmitted over less reliable wireless chan- nels. Traditionally, the objective in video coding has been to achieve high compression, which was attained with the cost of increasing encoding complexity. However, portable devices, such as camera phones, still lack enough computa- tional power and are energy-consumption constrained. Be- sides, a highly compressed video sequence is more vulnera- ble to transmission errors, which are often present in wireless networks due to multipath fading, shadowing, and environ- mental noise. Thus, there is a need of a low-complexity video coder with acceptable compression efficiency and strong error-resilience capabilities.
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HỌC ACTIONSCRIPT 3 0   P 20 PPS

HỌC ACTIONSCRIPT 3 0 P 20 PPS

A Circular Navigation System Although this chapter is called Motion , you can do more with the skills you’re accumulating than move objects around the stage. You can use the same math that animates an object along a circular path to position static elements along a circle. The following script, found in the circle_navigation.fla source file, automatically positions six buttons around a center draggable object, as shown in Figure 7-16. The buttons, complete with labels, are children of the center object. So, when the center object is dragged around, all the buttons follow making a movable navigation system. Such a system could be very useful for projects with large visual assets, or many user interface elements, because the navigation widget could be moved around as needed to expose underlying content.
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LẬP TRÌNH CHO LED CUBE 3X3X3

LẬP TRÌNH CHO LED CUBE 3X3X3

LỜI MỞ ĐẦUHiện nay các vi xử lí, hay điều khiển đang được sử dụng rộng rãi trong nhiều lĩnh vực: điều khiển, tự động hóa, đo đạc, truyền thông,…so với các phương pháp điều khiển đo đạc, truyền thống thì việc sử dụng vi xử lí có những ưu điểm như: nhỏ gọn, ít tốn năng lượng, thời gian đáp ứng nhanh có thể lập trình được…Ý thức được tầm quan trọng của Lập Trình Nhúng trong ứng dụng cho lập trình vi điều khiển là cơ sở để chúng em chọn đề tài Lập Trình Nhúng “ Đèn Led dạng khối lập phương 3x3x3”.Với sự hướng dẫn tận tình của thầy TS.Nguyễn Thanh Bình mà chúng em hoàn thành đề tài này. Mặc dù vậy, do trình độ còn hạn chế và thời gian có hạn nên chúng em chắc chắn rằng đề tài này không thể tránh khỏi những thiếu sót. Chúng em rất mong nhận được sự thông cảm và góp ý của quý thầy cô trong khoa.Chúng em xin chân thành cảm ơn.MỤC LỤCCHƯƠNG 1: GIỚI THIỆU81.1 Giới thiệu đề tài81.2 Nội dung đề tài81.3 Giới hạn đề tài81.4 Cấu trúc báo cáo8CHƯƠNG 2: CƠ SỞ LÝ THUYẾT92.1 Lý thuyết lập trình nhúng92.1.1 Lập trình nhúng là gì?92.1.2 Lịch sử92.1.3 Đặc điểm102.1.4 Giao diện112.1.5 Thiết bị ngoại vi122.1.6 Công cụ phát triển122.1.7 Độ tin cậy132.2 Các kiến trúc phần mềm hệ thống nhúng132.2.1 Vòng lặp kiểm soát đơn giản132.2.2 Hệ thống ngắt điều khiển132.3 Tìm hiểu về Mega 2560152.3.1 Arduino Mega 2560172.3.2 Thông số kĩ thuật192.3.3 Chi tiết sản phẩm202.3.4 Ứng dụng thực tế212.4 Công cụ ngôn ngữ thực hiện22CHƯƠNG 3: XÂY DỰNG ỨNG DỤNG233.1 Mô tả bài toán233.1.1 Diễn tả mạch233.1.2 Chức năng của mạch233.1.3 Ý nghĩa233.2 Yêu cầu bài toán233.2.1 Thiết kế mạch cần gì?233.2.2 Ứng dụng như thế nào?23CHƯƠNG 4: HIỆN THỰC ỨNG DỤNG244.1 Đoạn code nhấp nháy đèn24CHƯƠNG 5: KẾT LUẬN275.1 Các công việc đã thực hiện275.2 Ưu điểm, nhược điểm275.3 Hướng mở rộng tương lai27 CHƯƠNG 1: GIỚI THIỆU1.1 Giới thiệu đề tàiCác biển quảng cáo led , hay các màn hình LED 2D, LED MATRIX được nhìn thấy ở khắp mọi nơi, nó sử dụng để hiển thị các hình ảnh, chữ cái …..Chúng phục vụ vào các mục đích khác nhau chẳng hạn như quảng cáo, trang trí nhà hàng, quán cafe, hay là hiển thị những thông tin, hình ảnh ở các siêu thị, công ty. Tuy nhiên các hình ảnh, hiệu ứng hiển thị vẫn còn hạn chế, thiếu trực quan và ít hấp dẫn.Để giái quyết vấn đề đó giải pháp là khối LED 3D CUBE có khả năng hiển thị chữ, hình ảnh theo dạng 2 và 3 chiều sinh động khác biệt và ưu thế hơn so với LED 2D thông thường, chúng tạo ra hình ảnh trong không gian 3 chiều hiển thị các hiệu ứng từ đơn giản đến phức tạp với nhiều kiểu phong phú, đẹp mắt….. không bị gò bó và giới hạn bởi không gian phẳng, mang lại tính trực quan hơn.
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article A Fixed Point Theorem Based on Miranda Uwe Sch¨ fer a" docx

Then, f ( x ) = 0 has a solution in Ω . For n = 1, Theorem 1.1 reduces to the well-known intermediate-value theorem. Mi- randa proved his theorem using the Brouwer fixed point theorem. Using the Brouwer degree of a mapping, Vrahatis gave another short proof of Theorem 1.1 (see [ 2 ]). Follow- ing this proof it is easy to see that Theorem 1.1 is also true, if L is dependent of i ; that is, Ω can also be a rectangle and need not to be a cube. Even some L i can be zero. Very often, the theorem of Miranda is stated as in the following corollary (see also [ 3 , 4 ]), which is not the theorem of Miranda in its original form, but a consequence of it.
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SAT II MATH EPISODE 2 PART 8 PDF

SAT II MATH EPISODE 2 PART 8 PDF

13. The correct answer is (D). 14. The correct answer is (B). The converse, inverse, and negative are not equivalent statements. The contrapositive, ~ Q → ~ P , is equivalent and this is the same as saying that Q is a necessary condition for P . 15. The correct answer is (C).
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trường thcs hoàng xuân hãn

trường thcs hoàng xuân hãn

The shortest path on the surface of a cube from vertex A to the furthest vertex B involves crossing a certain number of faces and edges of the cubeA. See the diagramB[r]
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Tài liệu Data Streams Models and Algorithms- P5 docx

Tài liệu Data Streams Models and Algorithms- P5 docx

Many data stream sources (for example, web site access patterns, transac- tions in financial markets, and communication network traffic) are prone to dramatic spikes in volume (e.g., spikes in traffic at a corporate web following the announcement of a new product or the spikes in traffic experienced by news web sites and telephone networks on September 1 1,2001). Because peak load during a spike can be orders of magnitude higher than typical loads, fully pro- visioning a data stream monitoring system to handle the peak load is generally impractical. However, in many monitoring scenarios, it is precisely during bursts of high load that the function performed by the monitoring application is most critical. Therefore, it is particularly important for systems processing continuous monitoring queries over data streams to be able to automatically adapt to unanticipated spikes in input data rates that exceed the capacity of the system. An overloaded system will be unable to process all of its input data and keep up with the rate of data arrival, so loadshedding, i.e., discarding some fraction of the unprocessed data, becomes necessary in order for the system to continue to provide up-to-date query responses. In this chapter, we consider the question of how best to perform load shedding: How many tuples should be dropped, and where in the query plan should they be dropped, so that the system is able to keep up with the rate of data arrival, while minimizing the degree of inaccuracy in the query answers introduced as a result of load shedding?
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Handbook of mathematics for engineers and scienteists part 15 pot

Handbook of mathematics for engineers and scienteists part 15 pot

3.3.2-1. Basic notions and properties. A figure formed by three great circle arcs pairwise connecting three arbitrary points on the sphere is called a spherical triangle (Fig. 3.37a). The vertices of a spherical triangle are the points of intersection of three rays issuing from the center of the sphere with the sphere. The angles less than π between the rays are called the sides a , b , and c of a spherical
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ALGORITHMS AND DATA STRUCTURES IN C PART 10 PPSX

ALGORITHMS AND DATA STRUCTURES IN C PART 10 PPSX

with 2.5.2 Pipelining   Pipelining is a means to achieve speedup for an algorithm by dividing the algorithm into stages. Each stage is to be executed in the same amount of time. The flow is divided into k distinct stages. The output of the j th stage becomes the input to the ( j + 1) th stage. Pipelining is
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MICROSOFT SQL SERVER 2008 R2 UNLEASHED  P205 DOCX

MICROSOFT SQL SERVER 2008 R2 UNLEASHED P205 DOCX

ptg An Analytics Design Methodology A data warehouse can be built from the top down or from the bottom up. To build a top- down warehouse, you need to form a complete picture or logical data model for the entire organization (or all the subsystems within the scope of the project, such as all financial systems). In contrast, building a warehouse from the bottom up takes a much more departmental or specific business-area focus (for example, a sales order system only). This breaks the task of modeling the data into more manageable chunks. Such a departmental approach produces data marts that are potentially subsets of the overall data warehouse. The bottom-up approach can simplify implementation. It helps get departmental or busi- ness-area information to the people who need it, makes it easier to protect sensitive data, and results in better query response times because data marts deal with less data than a voluminous transactional system. The potential risk in the data mart approach is that disparity in data mart implementation can result in a logically disjointed enterprise data warehouse if efforts aren’t carefully coordinated across the organization.
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article Uniform Boundedness for Approximations of the Identity with Nondoubling Measures Dachun Yang and Dongyong Yang" pptx

We finally make some convention. Throughout the paper, we always denote by C a positive constant which is independent of the main parameters, but it may vary from line to line. Constant with subscript such as C 1 does not change in di ff erent occurrences. The notation Y Z means that there exists a constant C > 0 such that Y ≤ CZ , while Y Z
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Tài Liệu Ôn Thi Vào Trần Đại Nghĩa

Tài Liệu Ôn Thi Vào Trần Đại Nghĩa

Graph: biểu đồ Combine: kết hợp Expression= statement phát biểu, biểu thức Total : tổng số Solid: khối hình Figure: hình dáng Cube: hình lập phương Cone: hình nón. Sphere: hình c[r]
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GIÁO TRÌNH AUTOCAD 3D

GIÁO TRÌNH AUTOCAD 3D

Select axis of revolution : chän trôc quay Start angle <0> : vÞ trÝ b¾t ®Çu trôc xoay Included angle ( +=CCW,-=CW) < fullcircle> : gãc xoay • Chó ý : nÕu trôc xoay kh«ng ph¶i lµ ®−êng line hoÆc pline xuÊt hiÖn dßng nh¾c : Entity not usable as rotation axis : ®èi t−îng kh«ng thÝch hîp lµm trôc xoaỵ 3.LÖnh rulesurf : mÆt kÎ
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SAT MATH ESSENTIALS PART 11 PPSX

SAT MATH ESSENTIALS PART 11 PPSX

16. b. The area of a circle is equal to π r 2 . The radius of the inner circle is 5 m; therefore, the area of the inner circle is 25 π m 2 . The radius of the outer circle is (1.2)(5) = 6 m; therefore, the area of the outer circle is 36 π . Subtract the area of the inner circle from the area of the outer circle: 36 π – 25 π = 9 π m 2 .
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NEW SAT MATH WORKBOOK EPISODE 2 PART 3 PDF

NEW SAT MATH WORKBOOK EPISODE 2 PART 3 PDF

B. Pythagorean triples These are sets of numbers that satisfy the Pythagorean Theorem. When a given set of numbers such as 3, 4, 5 forms a Pythagorean triple (3 2 + 4 2 = 5 2 ), any multiples of this set such as 6, 8, 10 or 30, 40, 50 also form a Pythagorean triple. Memorizing the sets of Pythagorean triples that follow will save you valuable time in solving problems, for, if you recognize given numbers as multiples of Pythagorean triples, you do not have to do any arithmetic at all. The most common Pythagorean triples that should be memorized are
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BÁO CÁO TOÁN HỌC:

BÁO CÁO TOÁN HỌC: "BALANCING CYCLIC R-ARY GRAY CODES" POTX

aR n 0 , aR n − 1 0 , . . . , a 1 0 , and then ending with the edge to a 1 1. This is pictured for R = 4 in Figure 5. Regardless of whether R is even or odd, the construction gives a cyclic ( n + 1)-digit R -ary Gray code (provided the number of partition-blocks is even when R is odd). In what follows this will be referred to as the code induced by the partition B 1 ∪ . . . BL . By arranging the vertices of the (binary) n -cube in a grid whose rows are indexed by an ( n − 2)-cube and its columns by 00 10 11 01, most known n -digit binary codes can be seen to have this kind of partitioning behavior. When viewed from this perspective of partitions, the combinatorial argument for the binary constructions in [2, 7] required some restrictions on the usable partitions; for instance, at least two blocks can have only one element.
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Đề thi Olympic Toán học TMO năm 2015

Đề thi Olympic Toán học TMO năm 2015

Find the smallest two-digit number such that its cube ends with the digits of the original number in reverse order.. A Mathematics test consists of 3 problems, each problem being graded[r]
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BÁO CÁO TOÁN HỌC:

BÁO CÁO TOÁN HỌC: "DENSE PACKINGS OF EQUAL SPHERES IN A CUBE" PPS

In any case, the graphs suggested by the computer experiments lead us to conjecture a set of polynomial equations verified by the coordinates of centers p i . Those equations are far from being easily solved, and it is sometimes possible, like in [GMPW], to reduce the order of the system by taking into consideration the symmetries of the configuration and using a Gr¨ obner basis package. For n = 11 , 12 , 20 , 26, the reduction has been made with Mathematica and we also obtain a proof that the displayed graph corresponds to an existing packing; see below the case n = 11 for more details. When the reduction fails, we do not dispose of such a proof.
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DESIGNATION  C 348 – 97   FLEXURAL STRENGTH OF HYDRAULIC CEMENT MORTARS1 PPTX

DESIGNATION C 348 – 97 FLEXURAL STRENGTH OF HYDRAULIC CEMENT MORTARS1 PPTX

5.4 Specimen Molds—Molds for the 40 by 40 by 160-mm prism specimens shall be triple-gang molds and shall be so designed that the specimens will be molded with their longi- tudinal axes in a horizontal position. The molds shall be made of a hard metal, not attacked by cement mortar, and with a Rockwell hardness of not less than HRB 55. The parts of the molds shall be matchmarked and, when assembled, shall be tight-fitting and positively held together. The sides of the molds shall be sufficiently rigid to prevent spreading or warping. The interior faces of the molds shall be plane surfaces with a permissible variation, in any 50-mm line on a surface, of 0.03 mm for new molds and 0.05 mm for molds in use. The distance between opposite sides shall be 40 6 0.13 mm for new molds and 40 6 0.3 mm for molds in use. The height of the molds shall be 40 mm with permissible variations of +0.25 and −0.15 mm for new molds, and +0.25 and −0.40 mm for molds in use. The inside length of the molds shall be 160 6 2.5 mm. The angle between adjacent interior faces and top and bottom planes of the mold shall be 90 6 0.5°, measured at points
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DESIGNATION: C 452 – 95 - POTENTIAL EXPANSION OF PORTLAND-CEMENT MORTARS EXPOSED TO SULFATE1 PPS

DESIGNATION: C 452 – 95 - POTENTIAL EXPANSION OF PORTLAND-CEMENT MORTARS EXPOSED TO SULFATE1 PPS

Standard Test Method for Potential Expansion of Portland-Cement Mortars Exposed to Sulfate 1 This standard is issued under the fixed designation C 452; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
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MODELLING WITH AUTOCAD 2004 PHẦN 8 DOC

MODELLING WITH AUTOCAD 2004 PHẦN 8 DOC

a) lower part: extruded to a height of 50 with 15 taper b) middle part: extruded to a height of 60 with 0 taper c) top part: revolved about a line object for 90 degrees and then polar arrayed for 3 items about the top ‘circle’ centre. The line for the object can be drawn at your discretion. The line I used was drawn between two endpoints of a cut out on the top surface of the second extrusion as indicated in the activity drawing.
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THIẾT KẾ TRÊN MÁY VI TÍNH   PHẦN 1 AUTOCAD 3D   CHƯƠNG 3 PPT

THIẾT KẾ TRÊN MÁY VI TÍNH PHẦN 1 AUTOCAD 3D CHƯƠNG 3 PPT

Specify rotation angle of wedge about the Z axis: góc quay chung quanh tr ụ c song song v ớ i tr ụ c z vă tr ụ c năy đ i qua đ i ể m Corner of wedge Ví d ụ : Command: 3D↵ Enter an option[Box/Cone/DIsh/DOme/Mesh/Pyramid/ Sphere/Torus/Wedge]: w↵ Specify corner point of wedge: ch ỉ m ộ t đ i ể m trín măn hình
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