top rated ultrabooks

emitting diode), LEDs, or LEDs, is a solid-state semiconductor device capable of converting electrical energy into visible light, which can be converted directly into optical. Can be used in the circuit and the instrument as the indicator light, or composed of text or digital display. There are different compounds made of diodes such as arsenic, gallium, phosphorus and other compounds made, different combinations of compounds will show different colors of light.In the design of LED driver circu

color of the entire room. In order not to damage the overall color design of the room, be sure to pay attention to the lampshade of the lamps. The color of the shell is consistent with that of the walls, furniture, and curtains. 6. the invoice and contract must contain the name, specification, quantity, price, and amount of the tile. 7. Understand the name, address, contact person, and phone number of the organizer and manufacturer so that quality problems can be solved in a timely manner. ● Id

Indexreader object　　Indexsearcher Search Method Method Description Indexsearcher.search (query, N) Returns the highest rated N records according to query search Indexsearcher.search (query, filter, N) Based on query search, add a filter policy to return the highest rated N records Indexsearcher.search (query, N, sort) Based on

C. Jury Marks time limit per test 2 seconds memory limit per test megabytes input standard input output standard OUTPU T Polycarp watched Tv-show where K jury members one by one rated a participant by adding him a certain number of points be negative, i. e. points were subtracted). Initially the participant had some score, and each of the marks were one by one added to his score. It is known that the i-th jury member gave Ai points. Polycarp does not

ATX power supply, but there are some differences in electrical performance indicators. It applies to rated power between and ~ W power supply, used independently, not used in redundancy mode. Later, this specification was developed to EPS12VVersion2.0), and the applicable rated power reached ~ 650 W, the most intuitive difference between it and ATX12V power supply is that it provides 24 pin motherboard Pow

Simulation JobsFor the AC motor model given by the teacher, the rotational speed of the rotating magnetic field during normal operationN0=60f/p=1500r/minIn general, three-phase asynchronous motor rated speed nn= (0.94~0.985) N0, run the teacher gave the motor model, know that the rated speed of the motor is about 1490r/min Selection of startup methods The overall requirement is to have a large

map the original data to the low-dimensional space and the low-dimensional space.Overall idea: First find the user did not score items, by calculating the similarity between the non-rated items and other items, get a forecast score, and then the ratings of these items from high to low to sort, return to the first n items recommended to the user.The code below is divided into 5 main parts:Part 1th: Load the test data set;The 2nd part: Define three kin

specially designed stop outside the platter, away from the platter. Only when the disc rotates to the rated speed, the head arm starts to move inward (the disc axis) and the head is moved to the disc area (loading), and the head arm rotates outward to return to the docking rack to unload. This completely eliminates the hard drive start-stop when the head and the disc contact phenomenon, Western Data company called it "ramp loading technology." The im

frequency/8. The speed of the memory is generally in NS units, the common display is 6ns, 5.5ns, 5ns, 4ns, 3.8ns, until 1.8ns. The corresponding operating frequency is 143MHz, 166MHz, 183MHz, 200MHz, 250MHz, until 550MHz. The calculation of the operating frequency is very simple-the inverse of the memory speed is the rated operating frequency of the video memory, such as the video memory clock period of 4ns, then the video memory running frequency is

new breakthroughs in the industry, in this way, the high-end heat dissipation market continues to play the leading role of enterprises. Product Specifications:Water-cooled (head) Part• Supported processors: Intel lga775, Intel P4 478 pin, amd K7, amd K8, and AMD sempron• Water-cooled head size: 60x78X23.5mm• Material: copper/Acrylic (plastic)• Connector: 3 pin• Net weight: 453 grams• Led Light: BluePump Section• Size: 100x50x86mm• Rated voltage: 12 V

body is touched, it may generate electric sensing. Co-state throttling (Ac-connected inductor) In the filter circuit, the common mode Throttling is connected in series on the FireWire (L) and Neutral Line (n) to eliminate online low-pass common state and RF noise of power supply. Some power supply input lines will be wound around the core design, can also be considered as a simple co-state throttling. Its appearance is a square shape like a transformer, And the exposed coils can be seen in s

give the highest score or give the lowest score when evaluating all movies. These users are given the relative non-annual value of the evaluations more important. For example: Imagine that user K rated 4 stars for his favorite movie, while other good movies rated 3 stars. Suppose now another user T rated his/her favorite movie as 5 stars and watched a movie that

Our problem is such a M-item, m-user data, only some users and some of the data is scored data, the other part of the score is blank, at this time we want to use the existing part of sparse data to predict the gap between the items and data between the scoring relationship, to find the highest rated items recommended to the user.The recommendation algorithm has a lot of application scenarios and commercial value, so it is worth studying the recommenda

We know that the rated power of the small power supply is difficult to meet the system demand, light is the crash frequently, heavy can not boot or even damage the hardware. Because of this obvious consequence, consumers often pay attention to power supply only when they buy power, ignoring other aspects. In fact, now buy power has not been a single focus on the rated power, but also should be in the power

characteristic curve of TVs TVS have the same circuit symbols as regular zener diodes. Its forward characteristic is the same as the ordinary diode, and the reverse characteristic is typical PN junction avalanche device. Under the action of the transient peak current pulse, the current flowing through the TVs, from the original reverse leakage current ID up to IR, its bipolar voltage from the rated reverse shutdown voltage VWM rise to the breakdown v

C. Jury Marks time limit per test 2 seconds memory limit per test megabytes input standard input output standard OUTPU T Polycarp watched Tv-show where K jury members one by one rated a participant by adding him a certain number of points be negative, i. e. points were subtracted). Initially the participant had some score, and each of the marks were one by one added to his score. It is known that the i-th jury member gave Ai points. Polycarp does not

Model: mf52e-3 r25:47kω B Value: 3950 The NTC is the abbreviation for negative temperature coefficient, which means a negative temperature system. Empirical formula for resistance value and temperature conversion of thermistor in negative temperature system: RT = RN * EXP (B * (1/T–1/TN)) RT: NTC thermistor resistance at temperature T (K).RN: NTC thermistor resistance at rated temperature TN (K).T: The specified temperature. T + 273.15The mate

recommendation is certainly not the best result, so we need to have coordinated filtering. Collaborative filtering can be divided into two models, one is called KNN, the user is the nearest neighbor model, the other is matrix factorization, decomposition model. There are two basic approaches to KNN: one is to find K users who are most similar to the user U, for example, if we want to predict U's score on the movie I, we can find other K-rated users w

[Editor's note] although it has been around for nine years, Hamsterdb still lacks popularity compared with MongoDB, and is rated as a non-mainstream database. Hamsterdb is an open-source key-value database. However, unlike other NoSQL databases, Hamsterdb is single-line and non-distributed, and its feature design is more like a column-store database. It also supports read- [Editor's note] although it has been around for nine years, Hamsterdb still lac

-step ). Positioning torque: when the motor is not powered on, the locking torque of the motor rotor (caused by the harmonic and mechanical error of the magnetic field tooth) Static torque: the motor under the rated static electricity, when the motor does not rotate, the locking torque of the motor shaft. This torque is used to measure the size (geometric size) of a motor and has nothing to do with the driving voltage and power supply.Although the sta