Comparison of different modulation technique

Comparison of different modulation technique 1. INTRODUCTION 1.1 Modulation is the process of varying one waveform in relation to another waveform. In telecommunications, modulation is used to convey a message, or a musician may modulate the tone from a musical instrument by varying its volume, timing and pitch. Often a high-frequency sinusoid waveform is used as carrier signal to convey a lower frequency signal. The three key parameters of a sine wave are its amplitude (volume), its phase (timing) and its frequency (pitch), all of which can be modified in accordance with a low frequency information signal to obtain the modulated signal. A device that performs modulation is known as a modulator and a device that performs the inverse operation of modulation is known as a demodulator (sometimes detector or demod). 1.2 TWO TYPES OF MODULATION A) Analog modulation B) Digital modulation Here we discuss analog modulation techniques. 2. AMPLITUDE MODULATION Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the strength of the transmitted signal in relation to the information being sent. For example, changes in the signal strength can be used to reflect the sounds to be reproduced by a speaker, or to specify the light intensity of television pixels. (Contrast this with frequency modulation, also commonly used for sound transmissions, in which the frequency is varied; and phase modulation, often used in remote controls, in which the phase is varied). 2.1 TYPES OF AMPLITUDE MODULATION As originally developed for the electric telephone, amplitude modulation was used to add audio information to the low-powered direct current flowing from a telephone transmitter to a receiver. As a simplified explanation, at the transmitting end, a telephone microphone was used to vary the strength of the transmitted current, according to the frequency and loudness of the sounds received. Then, at the receiving end of the telephone line, the transmitted electrical current affected an electromagnet, which strengthened and weakened in response to the strength of the current. In turn, the electromagnet produced vibrations in the receiver diaphragm, thus closely reproducing the frequency and loudness of the sounds originally heard at the transmitter. In contrast to the telephone, in radio communication what is modulated is a continuous wave radio signal (carrier wave) produced by a radio transmitter. In its basic form, amplitude modulation produces a signal with power concentrated at the carrier frequency and in two adjacent sidebands. This process is known as heterodyning. Each sideband is equal in bandwidth to that of the modulating signal and is a mirror image of the other. Amplitude modulation that results in two sidebands and a carrier is often called double sideband amplitude modulation (DSB-AM). Amplitude modulation is inefficient in terms of power usage and much of it is wasted. At least two-thirds of the power is concentrated in the carrier signal, which carries no useful information (beyond the fact that a signal is present); the remaining power is split between two identical sidebands, though only one of these is needed since they contain identical information. To increase transmitter efficiency, the carrier can be removed (suppressed) from the AM signal. This produces a reduced-carrier transmission or double-sideband suppressed-carrier (DSBSC) signal. A suppressed-carrier amplitude modulation scheme is three times more power-efficient than traditional DSB-AM. If the carrier is only partially suppressed, a double-sideband reduced-carrier (DSBRC) signal results. DSBSC and DSBRC signals need their carrier to be regenerated (by a beat frequency oscillator, for instance) to be demodulated using conventional techniques. Even greater efficiency is achieved—at the expense of increased transmitter and receiver complexity—by completely suppressing both the carrier and one of the sidebands. This is single-sideband modulation, widely used in amateur radio due to its efficient use of both power and bandwidth. A) DSB-FC In radio communications, a sideband is a band of frequencies higher than or lower than the carrier frequency, containing power as a result of the modulation process. The sidebands consist of all the Fourier components of the modulated signal except the carrier. All forms of modulation produce sidebands. Amplitude modulation of a carrier wave normally results in two mirror-image sidebands. The signal components above the carrier frequency constitute the upper sideband (USB) and those below the carrier frequency constitute the lower sideband (LSB). In conventional AM transmission, the carrier and both sidebands are present, sometimes called double sideband amplitude modulation (DSB-AM). In some forms of AM the carrier may be removed, producing double sideband with suppressed carrier (DSB-SC). An example is the stereophonic difference (L-R) information transmitted in FM stereo broadcasting on a 38kHz subcarrier. The receiver locally regenerates the subcarrier by doubling a special 19kHz pilot tone, but in other DSB-SC systems the carrier may be regenerated directly from the sidebands by a Costas loop or squaring loop. This is common in digital transmission systems such as BPSK where the signal is continually present. B) SSB-SC Single-sideband modulation (SSB) is a refinement of amplitude modulation that more efficiently uses electrical power and bandwidth. Amplitude modulation produces a modulated output signal that has twice the bandwidth of the original baseband signal. Single-sideband modulation avoids this bandwidth doubling, and the power wasted on a carrier, at the cost of somewhat increased device complexity. C) SUPPERESED CARRIER Reduced-carrier transmission is an amplitude modulation (AM) transmission in which the carrier wave level is reduced to reduce wasted electrical power. Suppressed-carrier transmission is a special case in which the carrier level is reduced below that required for demodulation by a normal receiver. Reduction of the carrier level permits higher power levels in the sidebands than would be possible with conventional AM transmission. Carrier power must be restored by the receiving station to permit demodulation, usually by means of a beat frequency oscillator (BFO). Failure of the BFO to match the original carrier frequency when receiving such a signal will cause a heterodyne. Suppressed carriers are often used for single sideband (SSB) transmissions, such as for amateur radio on shortwave. That system is referred to in full as SSB suppressed carrier (SSBSC) or (SSB-SC). International broadcasters agreed in 1985 to also use SSBSC entirely by 2015, though IBOC and IBAC digital radio (namely Digital Radio Mondiale) seems likely to make this irrelevant. D) VSB A vestigial sideband (in radio communication) is a sideband that has been only partly cut off or suppressed. Television broadcasts (in analog video formats) use this method if the video is transmitted in AM, due to the large bandwidth used. It may also be used in digital transmission, such as the ATSC standardized 8-VSB. The Milgo 4400/48 modem (circa 1967) used vestigial sideband and phase-shift keying to provide 4800-bit/s transmission over a 1600 Hz channel. E) QAM Quadrature amplitude modulation (QAM) is both an analog and a digital modulation scheme. It conveys two analog message signals, or two digital bit streams, by changing (modulating) the amplitudes of two carrier waves, using the amplitude-shift keying (ASK) digital modulation scheme or amplitude modulation (AM) analog modulation scheme. These two waves, usually sinusoids, are out of phase with each other by 90Â ° and are thus called quadrature carriers or quadrature components — hence the name of the scheme. The modulated waves are summed, and the resulting waveform is a combination of both phase-shift keying (PSK) and amplitude-shift keying, or in the analog case of phase modulation (PM) and amplitude modulation. In the digital QAM case, a finite number of at least two phases, and at least two amplitudes are used. PSK modulators are often designed using the QAM principle, but are not considered as QAM since the amplitude of the modulated carrier signal is constant. 3) FREQUENCY MODULATION frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant). In analog applications, the instantaneous frequency of the carrier is directly proportional to the instantaneous value of the input signal. Digital data can be sent by shifting the carriers frequency among a set of discrete values, a technique known as frequency-shift keying. CARSONS RULE A rule of thumb, Carsons rule states that nearly all (~98%) of the power of a frequency-modulated signal lies within a bandwidth of where , as defined above, is the peak deviation of the instantaneous frequency from the center carrier frequency . Normal signal Modulated signal 4) PHASE MODULATION Phase modulation (PM) is a form of modulation that represents information as variations in the instantaneous phase of a carrier wave. Unlike its more popular counterpart, frequency modulation (FM), PM is not very widely used. This is because it tends to require more complex receiving hardware and there can be ambiguity problems in determining whether, for example, the signal has changed phase by +180Â ° or -180Â °. CARSONS RULE Suppose that the signal to be sent (called the modulating or message signal) is m(t) and the carrier onto which the signal is to be modulated is Annotated: carrier(time) = (carrier amplitude)sin(carrier frequencytime + phase shift) This make the modulated signal This shows how m(t) modulates the phase the greater m(t) is at a point in time, the greater the phase shift of the modulated signal at that point. It can also be viewed as a change of the frequency of the carrier signal, and phase modulation can thus be considered a special case of FM in which the carrier frequency modulation is given by the time derivative of the phase modulation. The spectral behaviour of phase modulation is difficult to derive, but the mathematics reveals that there are two regions of particular interest: For small amplitude signals, PM is similar to amplitude modulation (AM) and exhibits its unfortunate doubling of baseband bandwidth and poor efficiency. For a single large sinusoidal signal, PM is similar to FM, and its bandwidth is approximately, where fM = ωm / 2Ï€ and h is the modulation index defined below. This is also known as Carsons Rule for PM 5) SPACE MODULATION Space modulation is a radio Amplitude Modulation technique used in Instrument Landing Systems that incorporates the use of multiple antennas fed with various radio frequency powers and phases to create different depths of modulation within various volumes of three-dimensional airspace. This modulation method differs from internal modulation methods inside most other radio transmitters in that the phases and powers of the two individual signals mix within airspace, rather than in a modulator.

Rough Draft Senior Paper

Well a psychiatrist is a hygienic who attends their clients behavioral, emotional, and mental symptoms (Ferguson, 157). They help people in many different ways. Some people are prescribed medicine because they feel that just talking to someone isn't helping and others can go talk to a psychiatrist and feel relieved like they don't need anything more than to talk to someone about their problems. Some psychiatric medications can be called psychotherapeutic or psychotropic medication (Mental, NP). Psychiatric medication wasn't developed until the sass's (Ferguson, 186).In days that are owe long forgotten, society stigmatize people with mental illnesses so much that they were kept chained up in asylums (Ferguson, 187). People also used to categorize people who were in prison and people with mental illnesses as the same thing. Until one day somebody brought up the fact that they didn't think it was right. So then a few years later, they resulted in moving them to different sides of the ho spital. Some people, taking meds, can function better. And they may only need to take them for a short amount of time (Mental, NP).Taking medication doesn't always cure the disorder, but it helps to make the errors function better (Mental, NP). Patients trust is key, which takes time and patience (Mescaline, Margaret, 22). Not having their trust creates problems such as the patients aren't being helped in any way because they can't trust psychiatrists enough to talk to them, or the business might lose money because there are no clients that come because the psychiatrists can't be trusted. To keep on track and up to date, psychiatrists need to be very organized because there is a bunch of paperwork that people have to fill out and deal with (Mescaline, Margaret, 25).Psychiatrists also need to have the ability to have emotional strength so when they find out that a child is sad or angry, it does not affect the psychiatrist (Mescaline, Margaret, 25). This also helps because they do not want to get attached to a child. So they have to stay emotional and physically distant from them, but closer enough to give them comfort and support. TO even become a psychiatrist, people need to have a college degree in Psychology, Sociology, or Social Work to become a child therapist (Mescaline, Margaret, 24).Also, must have a Master's degree from an accredited college or university. People absolutely have to do their rouser work and they will need to have supervised practice with patients (Mescaline, Margaret, 25). Must have very good observing skills, because this allows them to understand what children will not tell them (Mescaline, Margaret, 24). Also have to be open-minded, and have to be able to adapt to different types of situations very quickly (Mescaline, Margaret, 24). Psychiatrists need to know what they are supposed to be doing, and they need to know how to do it.Psychiatrists can prescribe medicine (Ferguson, 187). As people might have thought a psychiatrist and a ps ychologist are the amen thing, but they aren't. They are two totally different things. They work close to 52 hours a week, and remember that they are always on call (Ferguson, 192). Wow, that's more hours than a full time job! When psychiatrists are meeting a client for the first time, they like to conduct an evaluation with the patient so they can find out more about them such as current situations as well as medical history (Ferguson, 187).When clients express their feelings, it helps to give the psychiatrist a detailed picture of what is going on, how people really feel, and how the psychiatrist should treat oh (Ferguson, 188) What some humans don't realize is that there are different types of therapy to help out as well as medication, and talking to people. There is something called psychotherapy, which is when the patient is conjuring images while lying on a couch, the psychiatrist is taking copious notes at the same time (Ferguson, 187). Patient talks freely and relaxes.Therap ist's goal is to uncover troubling subconscious beliefs or conflicts and their causes. Dreams can also be broken down for clues about the unconscious mind. Subconscious events often lead to neurosis. Neurosis is an motional disorder in which the client displays anxious behavior (Ferguson, 188). There is also something called behavioral therapy, which is when the psychiatrists are teaching them to use relaxation to change their behavior. Psychiatrists could also use Biofeedback. This method uses electronic monitors that measure the effects that thoughts and feelings have on muscle tension, heart rate, and brain waves.This is done so that the patient can learn to control the body through stress reduction consciously (Ferguson, 188). Ever thought about what could be in these possibly harmful medications? Well scientists have done a few tests to see if psychiatric drugs are the safest to use. They have figured out that, some medications react differently with everyone. It all depends on how well people's bodies take it. People react differently when taking these psychiatric medications (Mental, NP). Factors such as what type of mental disorder the person has, their age, sex, and body.Also the habits they might have, genetics, physical illness, how well their liver and kidney functions, and other medications they are taking can affect how these drugs work in different people (Mental, NP). There is a bad side to everything, just like the negative effects of taking psychiatric medicines. When taking these medicines the person's weight, glucose levels and lipid levels need to be checked frequently (Mental, NP). Doctor's do this to ensure that the person's body hasn't reacted in a bad way; they want to make sure this person stays healthy while taking psychiatric medications.Usually antispasmodics are pills, but can also be in the liquid form. The liquid form is referred to as a shot; this person would go get it about once or twice a month (Mental, NP). More overshadows of taking these are, some people could possibly get side effects (Mental, NP). These side effects do not usually last long, maybe a few days or so. People taking antispasmodics are at risk of getting side effects (Mental, NP). Side effects such as persistent muscle spasms, tremors, and restlessness may occur with a physical movement but not always (Mental, NP).If people are taking any other medications when they are taking antispasmodics, the two medications together could react badly (Mental, NP). Side effects that could possibly happen while taking monotheistic are drowsiness, dizziness when moving, blurry vision, tachycardia, sensitive to the sun, and rashes (Mental, NP). Taking antispasmodics may result in major weight gain, and possible changes in their metabolism (Mental, NP). People who experience this are recommended to not drive at all until they get situated with their antispasmodic medicine (Mental, NP). They tell you these things for the person's safety and well-being.

Qatar Foreign Policy Towards the Middle East Essay

Qatar is located in Arabian Peninsula in boarders with Saudi Arabia, with only 225,000 citizens in a population of 1. 7 million. Qatar follows a conservative religious ideology, Wahhabism. While some refer to Qatar as the â€Å" Second Wahhabi Emirate,† it is traditionally known as â€Å"the most boring place in the gulf† or â€Å"the country known for being unknown (Roberts, 2012). † However, Qatar emerged as a strong state actor with extended networks of alliances in the world. The mediator role that Doha plays today is crucial in the region, particularly after the Arab Spring (HRW, 2013). Indeed, Qatar supported the Arab Uprisings across the region in 2011. In addition, Qatar invested between $65 billion and $100 billion to the FIFA world cup that it will be hosting in 2022. The Emir founded a number of humanitarian projects in Sudan, South of Lebanon, Gaza and Asia. In this paper, I attempt to answer the question of what are the driving motives of Qatar’s foreign policy in the Middle East? And why, unlike its neighboring countries, Qatar’s leadership supported the Arab appraisals of 2011? Emir of Qatar, Sheikh Hamad Al Thani, stated, â€Å"we support those who demanded justice and dignity,† when asked about his country’s role in the Arab revolutions in an interview in 60 Minutes . In response, President Barak Obama thanked the Emir for promoting democracy in the Middle East (Al Thani, 2012). Ironically, Qatar is an absolute monarchy described as an â€Å" authoritarian regime† that is ranked 138th out of the 167 countries by Democracy Index 2011. In addition, the Freedom House lists Qatar as â€Å" not free† (freedom house), (Democracy Index, 2011). Therefore, Qatar’s lack of rule of law, freedom of speech and political rights contradict â€Å"the Emir’s efforts to promote democracy† and delegitimizes his political statements. In relevance to this hypocrisy, Qatar’s foreign policy in general and its support of democratic transitions in the Arab region in specific serves its ambitions to secure itself from threats, maintain its status quo of an independent state and take a leadership role in the region. Political Emancipation and the Saudi Threat: Al Thani family ruled Qatar for more than 150 years. Qatar attained its independence in 1971, when the British-mandate came to an end and after its refusal to join the United Arab Emirates federation. Since that date until the 1990s, Saudi Arabia acted as the de facto protector of Qatar. Consequently, the Emir took policy directions from Al Saud. However, this relationship witnessed a change in the early 1990s as tensions in bilateral relations between the two countries began to arise. After the invasion of Kuwait and Sadam’s threat to attack the Suadi kingdom, Saudi quickly reached out to western coalitions in aim of protection. As Suadi presented itself as weak and unable to defend itself, the Qataris began to doubt Saudi’s ability to protect the Qatari entity and decided to pursue a strong alliance with the US. Therefore, between 1990-1992, Qatar signed a military agreement with the United States to host its military base in Al-Odead. In response, Saudi worked to block Qatar’s pipeline exports of gas to United Arab Emirates, Kuwait and Oman. As a result, tensions between the two countries intensified. Later, in 30 September 1992, Saudi attacked the Qatari boarders leaving three soldiers dead (2012). However, the clashes did not stop there. In1995, Shiekh Hamad Al Thani, the Crown Prince back then, seized power after a bloodless coup d’etat against his father. Of course, Saudi Arabia did not welcome the coup d’etat because of Hamad’s known strong motives to maintain his country’s autonomy. Instead, Saudi financially supported another coup against the current Emir. Then, Qatar detained a number of Saudi and Qatari citizens who cooperated with the Saudi government to bring the ousted prince back into power. These tensions led the Saudi-Qatar relations into a deep freeze until rapprochement happened in 2008 (2012). Since then, Shiekh Hamad Al Thani led the modernization process to create a brand name of Qatar. In its foreign policy, Qatar adopted diplomacy as a foreign policy tool that allows it to take on the mediator role in a number of regional disputes. In addition to its diplomatic activism and small size, the Qatari wealth that is invested in mediation efforts paves the way for Qatar to be a head in the political game today. A Theoretical approach on Qatar’s Mediation: The tribal nature of the Qatari society and the hierarchal system of the government lends the leadership absolute power to form the country’s economic-political agenda and foreign policy. The major two agents that determine the political strategies of Qatar’s foreign policy are its national security and its desire to establish a brand name for itself. Hence, the main key element of Qatar’s foreign policy is mediation, which is apparently is not a new political tool as the â€Å"early Al-Thanis were forced to become experts negotiators quickly in anarchic corner of the Middle East (Roberts). According to Jacob Bercovitch in his book, Studies in International Mediation, countries engage in mediation for various reasons that include â€Å"(a) a genuine desire to change the course of a long-standing conflict to promote peace, (b) a desire to gain access to major political leaders and open channels of communication, (c), a desire to spread one’s ideas and enhance standing and professional status, (d) the wish to preserve intact structure of which they are part, (e) viewing mediation as a way of extending and enhancing their own influence and gaining some value from the conflict (Roberts). Therefore, from this perspective, Qatar’s employs mediation for the enhancement of its professional status and the acquirement of power. From here, Qatar mediated a number of disputes in the region including the Hezbollah dispute with the Lebanese government, the rebellion disputes with the Northern Sudanese government and the Huothis dispute with the Yemeni government. Moreover, Participation in mediations between states is of great advantage to Qatar. Internationally, it promotes a peaceful image as a peacekeeping state in an attempt to gain worldwide respect (Roberts). Peterson argues in his work, Qatar and the World, â€Å"The fundamental advantage, however, is that it assures the legitimacy of the micro state. This in turn leads to the single most important factor: increased awareness of and legitimacy accruing to Qatar- in domestic and external terms- enhances the prospects of the states’ survival†(Roberts). Qatar neutral position and its small size makes non-threatening to other state to except negotiation with compare to Saudi which has interests in regional conflict, which leads political parties to refuse its negotiation, e. . Saudi support of the government in Yemen and rivalry with Hezbollah. On the other hand, Qatar established diplomatic relations with almost everyone. Qatar’s Foreign affairs minister, Shiekh Hamad bin Jasem Al Thani, in an interview on Al –Jazeera, was asked by Ahmed Manosur, Al Jazeera presenter, â€Å"I just want to understand one thing! In Qatar you have relations with the devils and the angels, with the Iranians and the Americans, with the Israelis and Hamas, he continued, how can we understand this policy? (Mansour, 2012). Today, Qatar unlike other state in the region, calls Tehran in the morning and Tel Aviv in the afternoon â€Å"(Roberts). It was the first state in the gulf to host trade office of Israel, established good relations with Hamas, opened communications with Hezbollah, the Emir of Qatar was the first to invite Ahmadinejad to attend the 28th Gulf Cooperation council summit in 2007. While other Arab states alienated Islamists, Qatar was in good terms with Arab oppositions, particularly Islamic groups. For example, Yusuf Al Qaradawi is an influential Islamic leader, resident of Qatar since 1960s is the main guest who taken the Qatari citizenship is Al Jazeera chief religious show. Also, other Arab political dissidents were welcomed and took Qatari citizenship such as Mohammed Hamed Al Hamari from Saudi Arabia who organized Youth Role in Change in the Arabic Gulf; young activists from across the gulf attended the conference (Al Qassemi, 2012). Al Jazeera as foreign Policy tool Part of â€Å"Brand Qatar† project, is to spread ideas and enhance Qatar’s status. The establishment of Al-Jazeera in 1996 came to serve that goal. Al Jazeera is an important tool of Qatar foreign policy, with its slogan the â€Å" The Opinion and the other Opinion† and the channel shameless criticisms to Arab leaders and programs on democracy and political rights. Al Jazeera soon gained the respect of Arab public compare to other media alternatives that are state sponsored (Khtib, 2013). The channel broadcasted the revolutions across the Arab spring countries – except the appraisals in Bahrain . The spread of revolutions were feared by Arab states, yet Qatar seemed to support the revolutions through Al Jazeera. That is said to be reason that inspired the youth in Egypt, Libya, Syria and Yemen to rebel against their governments and demand freedom and dignity. Nevertheless, The channel neutrality was under question, during the Egyptian elections, Al Jazeera hosted members of MB like Khirat Al Shater, and Moahhmed Mosri. Sultan Al Qassimi, a, wrote about Al Jazeera’s Arabic love ffaires with MB, he discussed some of his observations, that Muslim Brotherhood supports were given the chance to express their views on through the channel while critics towards Muslim Brotherhood were barely heard in the channel (Al Qassemi, 2012). Recently, Waddah Khanfar the director – general of Al Jazeera was replaced with Shiekh Ahmed bin Jasem Al Thani, who holds degree in petroleum (Al Qassemi, 2012). This suggests that Al Jazeea is becoming less free to represents Qatar’s government preferences and its support to Muslim brotherhood. Apparently, Qatar calculations towards the Arab spring were opposite to its neighbors who supported Mubarak regime. It saw an opportunity to ally itself with revolutions to promote for its image as â€Å"Pro- Arab public † and play regional role in Arab-Arab relations despite the policy risks its taking incase these revolutions were not successful. Through Qatar’s Money, Al-Jazeera, regional mediations and international pressure, Doha was successful in making the Arab Spring an opportunity so that it plays valuable role and take a leadership role in the region. Qatar in the Arab Spring: Qatar natural position had to be changed when it realized that change will topple the former leaders to stay at the head of the game head of Saudi, After Mubarak’s fall, Qatar supported Muslim brotherhood in Egypt. Shiekh Hamad Al Thani, the foreign minster of Qatar state that his country won’t allow Egypt to go bankrupt, Doha transferred five billion dollars to Egypt to meet its financial obligations. In addition to the financial support, Al Jazeera members’ Muslim brotherhoods are regularly interviewed to spread their influence. Middle Ease Scholar, Alain Gresh calls Al Jazeera the mouthpiece of Muslim brotherhood (Khatib, 2013). Furthermore, Rashid Al Ghanushi of Al Nahdha party of Tunisia, stated in an interview with Al Arab newspaper that Qatar is a major partner of the Arab spring revolutions hence it’s also a partner in next period of democratic transition and development since it offers development projects to support the economy of the Arab spring states (2012). Qatar had to intervene in Libya and Syria to sustain its leading regional position. It was the first country to lead the international action against Gaddafi. Qatar supplied the rebels with total US$2billion. On the other hand, Qatar involved in arming Syrian rebels like the Free Syrian Army. Also, it was successful in unifying the Syrian opposition. The importance of Qatar involvement in the latter is to counter Iranian influence by allying with opposition while Assad regime is backed by Iran (Khatib, 2013). In contrast to this, Al Jazeera was silent towards the uprisings in Bahrian. Qatar has been selective in backing uprisings there. The reason behind that, is Saudi Arabia influence that views the situation as â€Å"Shi’a uprising â€Å" and regional rivalry with Iran, hence any intervention from Qatar’s side in Bahraini issue would result tensions (Roberts, 2012). In conclusion, Qatar had different view towards the Arab Spring compare to its neighbors. Its objective to play a valuable role in the region, made Doha change its position as neutral state and take foreign policy risks. Although the question of weather Qatar made the right policy decisions or not remains unanswered yet. However, Doha succeeded in playing regional role a head of regional power like Saudi and influenced the Arab countries to take collective action towards Libya and Syria. In addition, Qatar foreign policy faces challenges; among these challenges is the reliance on money donations to support Post Arab Spring countries that would hinder progress in Qatari diplomacy. On the other hand, the lack of democracy and rule of law domestically puts Qatar legitimacy to promote for democracy under question. Moreover, making policy changes internally such as guarantee of political and civil rights to citizens hold parliamentary elections and protection freedom of speech will give Qatar legitimacy and enhance its image in international community.

Hoarding Worldwide Issue Essay - 1189 Words

When a hoarder opens their front door, one will first notice the smell of feces, molds, and a musky smell in the air. Upon walking into the hoarder living room, the clutter filled the entire room from the ceiling to the floor except for a pathway leading to every room in the house. Next, one walked to the bedroom where one can see tons of garbage bags filled with clothes, tons of boxes, and suitcases filled with clothes also. Then, followed the pathway to the kitchen, where the smell of rotten foods and molds filled the air. One will notice the piles of garbage, cluttered furniture, and structural damages to the walls and floor. Finally the journey comes to an end when one reaches the bathroom. In the bathroom, one will smell feces, molds,†¦show more content†¦In the United States, at least one million people are affected from hoarding. Hoarding first occurred when the collyers brothers were buried alive thus increase the fascination and anxiety during the 1930s to today (He rring 2011, p. 159). On March 21, 1947, Homer Collyer’s body was found â€Å"in a sitting position with his head on his knees. His brother’s, Langley Collyer’s body was found trapped in one of his own booby trap 10 feet away from Homer body. Their house â€Å"was packed with junk, [for example] newspapers, tin cans, magazines, umbrellas, old stoves, pipes, books, and much more.† In addition, only small tunnels were the only pathway through each room (Frost and Steketee 2010, p. 2). The Collyer’s brother’s house also contained eleven pianos, parts of a Model T Ford â€Å"discarded furniture, old ice boxes, baby carriages, animal bones, and old clothing †¦Ã¢â‚¬  (Penzel 2000, p. 246). 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