1  under the hood how facebook apps work

... all the things you need to download, how to add apps to Facebook, the secret trick to setting up a test account, and how to get the lowdown on the latest and greatest from Facebook Chapter 6, Facebook ... connections to other members of the same network The example | Chapter 1: Introducing Facebook Platform Figure 1-2 The social graph shown in Figure 1-2 depicts the social graph of the person in the center, ... of the Facebook audience and gradually pull them into the off -Facebook site, where they can sell them upgraded accounts or show them more ads This is a pretty solid idea, except that users on Facebook...

Ngày tải lên: 04/07/2014, 14:46

... network addresses, the networks file associates networks' names with network addresses By default, the networks file contains a single line associating the network address of the local area network ... network Often you can determine the broadcast address of a local area network from the address of a system on the local area network: simply replace the last of the four components of the network ... may be an Ethernet card that connects you to a LAN Either way, on the other side of the interface is a gateway machine The gateway knows how to look at the address of the recipient on the email...

Ngày tải lên: 14/12/2013, 13:15

... Changes to the specified directory of the remote system directory delete Deletes the specified file from the remote system file dir Displays the contents of the current directory of the remote ... entries: ReadmeName README The server will first look for the file README.html and then for the file README The similar HeaderName directive specifies the name of a file that the server will prepend ... override the specified options by placing an htaccess file in the directory or one of its subdirectories The htaccess file can contain specifications of the same sort as the access.conf file; the...

Ngày tải lên: 14/12/2013, 13:15

... 2-26 The Apache installer also takes care of starting the Apache Web server, as the final step of the automated installation process You can now proceed to test the server as described in the ... with each other This section shows you how Testing MySQL Once MySQL is successfully installed, the base tables are initialized and the server is started, you can verify that all is working as ... connected to the MySQL server and can begin executing SQL commands or queries to test whether the server is working as it should Here are a few examples, with their output: mysql> SHOW DATABASES;...

Ngày tải lên: 18/10/2013, 23:20

... sulfachloropyridazine).41,45,46 The transport of these substances is influenced by the sorption behavior of the compounds, the presence of manure in the soil matrix, and the nature of the land to which the manure ... be incorporated into the calculation The model calculated the concentration of the veterinary medicine in animal manure and then uses the nitrogen content of the manure and the maximum spreading ... toxic than the parent compounds; however, they may be more mobile and more persistent than their associate parent Further work on model compounds and their metabolites would help identify the circumstances...

Ngày tải lên: 18/06/2014, 16:20

... falling into the Earth’s atmosphere after the Earth crosses the same meteor stream months apart on the other side of the sun The difference in the size of the ozone holes is due to the differences ... a condensing drop below the temperature of the chamber for the entire duration of the experiment The results shown in the right side of Figure 5.20 therefore represent the capture of different-sized ... responsible for the nucleation of ice, then the temperatures of drop freezing should be the same as the temperature of ice nucleation of the individual particles This is not the case, however, and the temperature...

Ngày tải lên: 18/06/2014, 19:20

... zeolite, and then composts based on the concentration extracted by EDTA (p

Ngày tải lên: 18/06/2014, 19:20

... varies In Figure 5.4 the daytime respiration (darkly shaded) is made to increase during the day, based on the idea that the more sugar made by the plant the more respiration there is See Appendix ... Appendix A5A for more details In Figure 5.4 the respiration (below the line) is greater than the daytime net photosynthesis (above the line) In other words, in the course of a day and night, more oxygen ... for the diffusion (Figure 5.4) Points above the horizontal line are increases (positive), and points below the line are decreases (negative) The shaded area above the line is net photosynthesis,...

Ngày tải lên: 18/06/2014, 19:20

... circumstances For this reason, the court upheld the CEQ’s authority to issue the emergency regulation The court also held that the decision by the CEQ and the Air Force designating the situation as an emergency ... Practitioners with information such as the nature of the action or even a proposed CATX that the action might fit On receiving the request, the NEPA practitioner would then use the system, which includes ... taken under the Clean Air Act shall be deemed a major federal action significantly affecting the quality of the human environment.”18 Similarly, certain actions taken by the EPA under the Clean...

Ngày tải lên: 18/06/2014, 19:20

... from the soil surface Then a fraction (unsupported) of 210Pb in the soil is derived from the atmosphere via fallout or wet deposition The origin of the other natural fraction (supported) is the ... placed on the polyacrylamide disks to press them against the filter and to ensure close contact between the soil and the absorbent The polyethylene box was then tightly closed to avoid the evaporation ... from the Bure site, in northeast France (French laboratory for the study of deep underground nuclear waste disposal) The length of the tubes allowed inclusion of the Ap horizon (0 to 20 cm) and the...

Ngày tải lên: 18/06/2014, 19:20

... and how it occurred, and how it is being addressed; • Detailed description of any accidents that occurred, noting who received the injury, how it occurred, how serious the injury was, how the ... custody of the samples by signing the chain-of-custody form The sample bottles in the shipment are then counted, and the requested analyses on the sample bottles are compared against the requested ... always be the date, followed by a detailed description of the weather conditions All of the following entries should begin with the time that the entry was made Any space remaining on the last...

Ngày tải lên: 18/06/2014, 19:20

... example, the evolution of the technology and the ageing of existing products are considered Further, the functionality of the product represented the good as more of a service than an entity The case ... already bearing at the time of the decision) to be internalized in the decision-relevant future (i.e., “monetary external costs”) Societal LCC expands the boundaries further to include the internalization ... supplement the portfolio plot with a single table, as is shown in the case study box It is useful to note that the aforementioned portfolio presentation only shows relative differences between the alternative...

Ngày tải lên: 18/06/2014, 22:20

... inhaled air, it will also increase the total dose of O3 to the lung In exercising individual animals, the duration of the exercise is more important than the dose of the exposure.3 5.5 ENVIRONMENTAL ... exposing them to either of these gases alone Laboratory studies showed that a single 2-h or 4-h exposure to O3 at 0.03 ppm and to SO2 at 0.24 ppm did not injure tobacco leaves However, when the leaves ... in the toxicity of chlorinated hydrocarbon pesticides Dietary lipids may favor more absorption of these pesticides, but once these chemicals are absorbed into the body, they may be stored in the...

Ngày tải lên: 18/06/2014, 22:20

... between the tip and the surface deflect the tip as it follows the surface profile The movement of the tip in response to the interaction can be monitored with a laser reflected from the cantilever ... x-rays released by the interactions of the electron beam with the atoms of the particles TEM analyses can be designed to determine the elemental composition of the particle and the chemical bonding ... chemistry between the top nm of a particle and its interior With TEM, the measurements are taken underneath the material The portion of the electron beam that passes through the particle can be...

Ngày tải lên: 18/06/2014, 22:20

... understanding the daily dose in the tested organisms, the resulting plasma exposure to the parent material, and the presence of metabolites The basic environmental tests that are needed for the ... Studies are also done to document the nature of the effects on the therapeutic target; the adsorption, distribution, metabolism, and excretion (ADME) of the chemical in the treated animal; and also ... from these tier B tests, and the HQ calculation is repeated If the HQ remains > 1, the specific hazard of the compound can be further assessed during a tier C process in countries such as the...

Ngày tải lên: 18/06/2014, 22:20

... 2T/r, where T is the surface tension of the water and r is the radius of curvature of the meniscus The tension in the water increases with the decrease in the radius of curvature of the meniscus, ... T is the surface tension of the water, R is the gas constant, ␪ is the temperature in K and ␳ is the density of the water The expression P =0·26TS␳, in which T is the surface tension of the water, ... the setting time of the concrete Ultimate shrinkage depends not only on the intensity of the drying, but also on the stiffness of the mix and the length of time it takes the mix to set, i.e the...

Ngày tải lên: 08/08/2014, 10:22

... through the pile to keep the soil moist and return the microbes it contains and a series of pipes within the pile or the underlying drainage layer forces air through the biopile itself The increased ... since they are relatively slow to act, they are of most use when the available time for treatment is not restricted These methods are not, however, without their disadvantages and chief amongst them ... classification 96 Environmental Biotechnology rather than the geographical location of the work or the level of complexity of the technology used, as in the previous cases In addition, it can also...

Ngày tải lên: 09/08/2014, 06:23

... activity The figure on the left shows the number of hours to reach an adverse effect under moderate exercise conditions (e.g., construction work or children playing) The figure on the right shows ... excellent The greater the difference, the more unstable the atmosphere and the more enhanced the dispersion If the environmental lapse rate is less than the dry adiabatic lapse rate, the atmosphere ... HAPs are regulated under another part of the HON (40 CFR Part 63) The HON lists 189 HAPs regulated under the air toxic program The focus of this rule is the SOCMI For purposes of the MACT standard,...

Ngày tải lên: 11/08/2014, 04:20

... representing the best agricultural land This portion of the assessment is the same as the rating system used by the USDA The Illinois Department of Agriculture then performs the site assessment of the ... composition of the parent material The climate under which the soil material has accumulated and has existed since accumulation Living organisms on and in the soil The topography The length of time the ... is because The nature of the soils will directly affect the feasibility of the construction of the project The soil structure is the key factor in the determination of the possible contamination...

Ngày tải lên: 11/08/2014, 04:20

... and thus the use of the compound did not pose a significant risk to the users (8) Another study concluded that the main threat to applicators was through the skin on the hands However, the levels ... grains The compound is absorbed by roots and then translocated throughout the plant Fenamiphos, as is typical of other organophosphates, blocks the enzyme acetylcholinesterase in the target pest The ... diazinon may store the compound in their fat over the short term (8) One study showed that the compound cleared the cows within weeks after spraying stopped Application of diazinon to the skin of cows...

Ngày tải lên: 11/08/2014, 04:20