Android’s operating system review

Android’s operating system review Android’s operating system is extremely safe and really hard for malicious users to get into other peoples phones and corrupt them without the user granting them permission but this wasn’t always the case. As the Linux kernel can be accessed directly this means developers have to use advanced software and hardware to ensure integrity of applications, data and the network is kept also confidentiality. Main security features incorporated by Android to protect the phone or tablet is the Google Play app this where users download majority their applications from. Google play now has a license verification and Google Play Protect which scans apps when you download them from the app store. Android also have an app and a website to locate if a device is stolen/lost. It also has a feature that when you download from a website for example and the device can’t verify the application certificate it has a pop up that users have to untick to allow installation from an unknown source. Also the device if enabled can go through periodic scans that will inform a user of potentially harmful apps. This is shown in the diagram. Androids basic security features presented is a pin, password and pattern or in some of the newer devices can be unlocked via the users face. One service that Android phones offer is device encryption. This involves scrabbling the data on the device and only when the device is presented with the correct key could you access the data for example a password or pin. If a user doesn’t enter the correct pass after a certain amount of tries users are sometimes able to set an erase all option. Android uses dm-crypt to encrypt the data. This encrypts data all the way down to the root file system thus working at the kernel level and has a 128 bit algorithm. It allows the whole disk to be encrypted. However once this encryption key is set there is no option to change it without a hard reset of the device and losing all of the data. Newer Android versions have incorporated fast encryption meaning you are prompted to enter your key in at start up, this leads to a slightly long time to get the device started. On the application level Android has introduced sandbox security and permission. Sandbox is an old concept and originated from the UNIX operating system which would split file permissions from processes. This means once the application is up and running unless granted permission by the user the application stays in its parameters and run on a virtual machine. This ensures one app doesn’t have access to another app. It sort of works like a sand toy i.e. once sand is in the toy unless the child allows the sand to come out the sand will never leave the sand boxes walls. This is seen when users first download their app from the Play Store or once downloaded the go to the applications settings and can edit it from there. For example simple applications like a photo editing application shouldn’t be accessing your phone but however it may need to access your storage such as photos or videos, it may also ask for permission to access your camera. With Android there isn’t a specific way an app has to enforce its security. Due to the apps being â€Å"sandboxed† at OS memory corruption doesn’t occur, this also means the native code at the Linux kernel is just as secure as the code operating on the â€Å"virtual machine†. Authentication is being able to identify the user or users and allowing them access to the system. Android uses â€Å"user-authentication-gated cryptographic keys†. On initial start-up authenticator tokens are available to receive information from the user. Users on Android must use a pin/pattern or password. This then generates a 64bit User SID. This works as the â€Å"key to the lock†. This 64Bit code is paired with the users’ password/pin or pattern. When users want to change this they must provide the original password thus giving the original 64bit user SID. If they don’t provide the exact key all the information hidden by the key is lost and this is what is known as an â€Å"untrusted enrol†.

Behavioval Science and Human Relations Term Paper

Behavioval Science and Human Relations - Term Paper Example It is considered that each of these internal systems possess specific control behaviors. It is assumed that the probabilities of transition between these internal states predict human behaviors in varying social contexts. The trends in these interstate transitions are calibrated and hierarchically organized by behavioral scientists to understand long term and short term human behaviors. It is these two ranges of behaviors which makes the foundation for human behavior and human relations. Such a modeling of human behavior can be helpful in many ways. These models can be used to develop human-machine systems which can assess and recognize human behavior. This could even be used to predict human behavior. Here the requirement is to have inputs for this system on the internal human states. However, the challenge here is that these human states are not readily observable. These internal states are to be estimated through an indirect estimation process. There are several researches on beha vioral science which has led to the designing of models which can estimate these internal human states. For instance, Pentland & Liu (199) has used a model termed Hidden Markov Model (HDD) to undertake this assessment and were able to recognize human driving behaviors and predict the pattern of human control states. It has been claimed that they were able to do accurate predictions and anticipate human behavior even up to few seconds in future. Behavioral science uses several human systems to analyze human behavior and relations. It has been recorded that human behaviors like speech, handwriting and hand gestures can be precisely recognized through some of the assessment models(Pentland & Liu, 1999). However, very detailed properties like smoothness and continuity are required to go up to the level of accurate simulation and prediction. Sharper models are required to capture the additional properties of smoothness and continuity. The application of these behavioral models in managem ent is based on the basic theory that every employee moves within his own unique system of human behavior. These are further influenced by the cultural, environmental and the experience based conditioning of each individual. It is important to understand these factors as it is these factors which make an individual to react in a particular when it comes to human relations. Thus it is important in management to understand these factors. It is these factors which constitutes that particular individual’s behavioral system. Thus if one could identify the factors within the behavioral system of an individual, the management will be in a position to predict that individual’s response in a given situation. The Human Relations approach The consideration of human behavior and elementary drivers of human behaviors in management has evolved as different school of thought in management, which is termed to be the human relations approach (Likert, 1961). This school of thought is ho wever, contradictory to the conventional management concepts. While the conventional management theories rely on rationalizing of management processes, the human relations approach leaves ample space for human behavior and emotions within in management. In simpler words, classical theories of management quantify work and work routines through tangible markers whereas the human relations approach accommodates emotional and relational needs of individuals

Discuss Reproductive Alternatives Research Paper

Discuss Reproductive Alternatives - Research Paper Example Georgia Reproductive Specialists (n.d.) stated, ‘The procedure, called Transvaginal Oocyte Retrieval, requires neither hospitalization nor general anesthesia. In order to prepare a proper environment in the woman and to increase the chances of recovering several healthy and mature eggs, the woman will undergo about two weeks of intensive preparation. This will include hormonal therapy with "fertility drugs." Blood tests and ultrasound scans of the ovaries are used to determine the optimal time to retrieve the eggs from the ovary. This optimal time is just before ovulation when the oocytes are almost ready for fertilization. At the proper time, an outpatient procedure under local anesthesia will allow the females eggs to be visualized by ultrasound and retrieved from the ovary by placing a needle through the vaginal wall. Usually, the eggs will develop into cleaving pre-embryos, whose cells divide 2 or 3 times to become preimplantation embryos (pre-embryos). Using a special cath eter, the couples pre-embryos will be passed through the vagina and into the uterus at the time the pre-embryos would normally have reached the uterus (2+ days after retrieval). After the pre-embryo placement in the uterus, the patient will lie quietly in a bed for about an hour, and then will return home.’ The process of Transvaginal Oocyte Retrieval can actually bring about emotional stress and even anxiety. Like other alternatives, it does not guarantee a hundred percent accuracy. It is also said to have serious side effects, however, drawbacks can be prevented once those are immediately detected. Another option that is becoming popular is the surrogate mothering. Malpani, Annirudha and Malpani, Anjali wrote, ‘The word "surrogate" means substitute or replacement and a surrogate mother is one who lends her uterus to another couple so that they can have a baby. In the West where fewer and fewer babies are offered for adoption, surrogacy is gaining popularity, despite