Tuesday, December 31, 2019
George Saundersââ¬â¢ ââ¬ÅThe New Meccaââ¬Â The Gap between Reality...
Tasfia Kamal 11/21/13 Professor Walker Communication Skills George Saundersââ¬â¢ ââ¬Å"The New Meccaâ⬠: The Gap between Reality and Conceptuality ââ¬Å"The New Meccaâ⬠is an essay in which author George Saunders engraves different experiences he had throughout his Dubai trip. In the beginning he tells the readers that everything they are going to assume about Dubai is going to be wrong unless they see Dubai by themselves first. Heâ⬠¦show more contentâ⬠¦Throughout the authorââ¬â¢s journey in Dubai, he got to meet a lot of lower class people who have been working there for years. He got to talk to them and ask them personal questions to get to know them better. He came across people who originated there years ago with hopes and dreams of improving their lifestyle. They have been working hard ever since. The author tells the readers that sometimes these employees get their passport taken away by the people they work for. They work almost twenty four hours every week since they arrived here. Although, they donââ¬â¢t even get paid enough. They have been treated horribly. However these people donââ¬â¢t tend to be bothered by this at all. They assumes that they would have worse life if they there were back in home. When the author was talking to the Kenyan security guard who works fourteen hours a day he realized that these people donââ¬â¢t understand that they are not being treated the way they are supposed to. The author asked a waiter about when he wants to get married and when he wants to go back to is country. The waiter replied that we will earn more money and then heââ¬â¢d like to go back to get married. These people are needy. So they come here with the hope of having a better life. As they donââ¬â¢t know their rights and they come from worse environment, they upper class people take advantage of it by treating them poorly. Then these lower class suffe ring people do not recognize this for
Monday, December 23, 2019
Feudalism - 1025 Words
Explain how the system known as ââ¬Å"feudalismâ⬠worked in Medieval Europe. The bases of feudalism is best described as a social system in Europe throughout the Middle Ages where individuals worked and battled for upper class who gave them protection and the use of the land in return for their services (Merriam-Webster). ââ¬Å"Feudalismâ⬠is not a medieval term and not even a translation of a medieval concept (Abels 2010; Brown 2010; Bouchard 1998). In our day and time Feudalism would be difficult and baffling in several ways, but some may feel that we would benefit from it. During this time the social class depended on how much land you owned. Royalty in your Kings and Queens was part of the upper class; the noble lords and vassals followed theâ⬠¦show more contentâ⬠¦The attacks were unsuspecting on the towns and villages so that they couldnââ¬â¢t maintain order. All the while this was taking place the Frankish Empire was falling apart. They begin to fight among each other for the Kingdom. They became a disorder society. Life may have been not suitable for some but feudalism turned dysfunction into order during a violent time. What was its impact on the mission of the church? The Church was the absolute most predominant foundation in medieval life, its impact invading practically every part of individualsââ¬â¢ lives. Its religious observances often shape to the plan; its customs checked every minute in a person s life; and its lessons supported standard convictions about morals, the significance of life and existence. Church in Western Europe was recognized as the Roman Catholic Church went from the religion of the Roman Empire to the official religion and the most powerful institution of the Middle Ages. All of Europe had been converted to Christianity by the year 1000. Although this process was peaceful at times but other times it got downright ugly. The inclusion of the church in the system became a political reality. The unsettled conditions caused by the Viking and Magyar invasions forced church officials to enter into close relations with the only power able to offer them protection. Bishops and abbots thus became vassals, receiving fiefs for which they were obligated to provide the usual feudal services. TheShow MoreRelatedEssay on Feudalism446 Words à |à 2 PagesFeudalism Western Europe suffered numerous hardships through the ninth and tenth centuries and this was the ultimate reason they established a new political organization which was known as feudalism. By providing honor, protection, and a sense of control, this new social system revived peace and order in Western Europe after the fall of the Carolingian Empire. Feudalism was a necessary ingredient to yield stability in during these times of calamity. The primary motive behind creating thisRead MoreFeudalism And The Middle Ages816 Words à |à 4 PagesFeudalism In The Middle Ages When people conjure images of the Middle Ages, people think of chaos, war, and little improvement. In fact, much of this is true. During the Middle Ages, a system called the Feudal System was formed to maintain order. It might have made life tough for peasants, but it kept nobles, or upper-class people, rich and in power. The Feudal System greatly affected daily life for everyone, but, in time, it collapsed. The constant chaos of the Middle Ages caused the Feudal SystemRead MoreThe Effects of Feudalism Essay1161 Words à |à 5 Pagesorganization called feudalism was a way of life that had great effect on people of the time and on the modern world. Feudalism was developed because of the weakness of Europe and its kings. The word feudalism comes from the word fief, which was the land held on condition of feudal service, similar to an estate (English). The fiefs bound together lords and vassals. Feudalism was a structure in which a lord divided his land into smaller parts to give to lesser lords (ââ¬Å"Feudalismâ⬠). A noble, or lordRead MoreDemise of Feudalism Essay717 Words à |à 3 PagesDemise of Feudalism There were numerous factors involving the demise of Feudalism in Europe. All the different small problems added to the confusion and replacement of feudalism by The Renaissance. The concentration of power in the hands of a few was always a great disruptive force in the feudal system. The rise of powerful monarchs in France, Spain, and England broke down the local organization. One of the determining factors in the downfall of feudalism was the Hundred Years War. Read MoreFall of feudalism paper1229 Words à |à 5 Pagesï » ¿ 10/30/2013 Quarterly Assessment How did Political, Social and Economic events which occurred during the Middle Ages contribute to the rapid fall of Feudalism and increase the foundation of nation states? Since politics and social matters are so closely founded the way that these two subcategories of the middle ages clashed against the Feudal way of organizing everything in the middle ages are. Politically kings ruled the way thatRead MoreThe Decline of Feudalism Essay1656 Words à |à 7 PagesLiterature June 2nd, 2010 The Decline of Feudalism Feudalism was based on a social structure of hierarchy. With William the Conqueror being the first king, he was named to the top of the hierarchy along with God. Everyone else was below them and had to follow their ways. This system ran systematically for years until things started to change. People were branching out from who the king made them to be. They were creating their own lives. The downfall to feudalism was caused by the Crusades, the merchantRead MoreThe Rise and Fall of Feudalism Essay868 Words à |à 4 PagesThe Rise and Fall of Feudalism Federation is a word that describes the United States government. A Federal government is defined as the act of federalizing or joining separate organizations (Answers 1). In the United States, the three branches of government (1). In the Middle Ages most governments changed and rarely stayed the same for really long periods of time. Many things would happen in each country that would change the type of government that each one had. Especially, during the MiddleRead MoreMain Reasons for the Fall of Feudalism1067 Words à |à 5 PagesFeudalism developed as a result of the frequent invasions made by the vikings during the Middle Ages around the 900s to early 1500s. Feudalism served its purpose by creating a system where the king would appoint lords that would appoint knights to appoint serfs that would be expected to work the land and fields in exchange for food, protection, and accommodations. It provided stability because lords were able to govern smaller groups of people thro ugh a system called manorialism. Feudalism allowedRead MoreFeudalism and Land Essay7806 Words à |à 32 PagesDid the Advantages of Feudalism outweigh the disadvantages? In order to attempt to answer a question such as this we must briefly describe the Feudal system then look at the advantages of having feudalism as a system and also the disadvantages and then secondly look at the alternatives if there was no such system in place. Let us first look at the Feudal system itself. The Feudal system was introduced to England and spread throughout Britain by William the Conqueror after 1066 and the BattleRead MoreEssay on Feudalism and Capitalism3836 Words à |à 16 PagesFeudalism and Capitalism Economic processes are those involving the production and distribution of goods and services. However, they do not alone determine this production and distribution. There is an interrelationship of economic, cultural, environmental, and political processes that all help to shape each other. Nothing that we do can be defined as a single process, for it is the interaction itself that helps to produce the final results that we observe. To understand this more fully
Sunday, December 15, 2019
The Essense Of Buddhism Free Essays
John Snelling has written that scientists with their scientific information have succeeded in sending space craft to distant planets or even probe to remote quarters of the planet with radio telescopes, (Snelling 7). They may investigate the mysteries of the sub atomic world with electron microscopes. But the thing that infact know least about is this great mystery that is right here with us all the time- the heart of the matter behind Buddhism. We will write a custom essay sample on The Essense Of Buddhism or any similar topic only for you Order Now For like every one they subscribe to consensus view and donââ¬â¢t give the matter a second thought. Thus, according to John Snelling of the London Buddhist Society, these scientists fail to see what is right under their nose, (291). Buddhist is concerned, Snelling has found, with the unravelling of this mystery. In the first sense it is necessary to see through the great delusion of ââ¬ËIââ¬â¢, of the so called person. Then it is a matter of finding what really is there. And how plot thickens to penetrate this mystery is to penetrate the ultimate mystery, the mystery of the heart of all things, and confront what the Christians called God, the Hindus Brahman or Atman-and it goes by other names in other religions. Buddhists, however hesitate to put a name to it or say anything or say anything at all about it. It is they maintain something that cannot be grasped by intellect or described in words. It cannot be seen directly; but that seeing brings about something truly miraculous: a total transformation, no less. The veils of delution fall away and last the world is perceived as it truly is. At the same time a deep compassion also crystallizes: a pure, self less kindliness and caring born of an understanding of the unity of all beings. Therefore, as has been established by John Snelling in his ââ¬ËThe Buddhist handbook: a complete Guide to Buddhist Teaching and Practiceââ¬â¢, (7) Buddhism is quite simple. But as, Snelling has found out simple things are always hard to fully realize, so people need all kinds of aids and support. A vast superstructure according to Snelling has therefore grown up around the basic heart core of the Buddhaââ¬â¢s teaching: mountains of philosophical speculation, a voluminous literature, monastic codes and ethical systems, histories, cosmologies, different types of ritual and meditation practice, institutions and hierarchies. John Snelling writes of one Shuan Chin ken who wrote a preface to a text book (mumonkan) From the London Buddhist society, John Snelling (1987) established that many of those who have undertaken the study and practice of Buddhism have also taken an interest in the western psychotherapies that developed from the pioneering work of Sigmund Freud, the, the most famous western psychologist. As well as the Freudian psychoanalysis and its derivatives, Snelling has found that, this includes the analytical psychology of Freud great but errant student, Carl Gustav Jung, as well as subsequent developments right down to the present time, where Buddhism and western society have come together in a wonderful bond, (Snelling, 292). These theories, now regarded as Western psychotherapies arose towards the end of the 19th century and in the early part of the 20th century. This great discovery made by the pioneers of this movement was of the existence of the unconscious: an area or range of aspects of human psyche falling outside the normal range of conscious awareness. Snelling records the therapeutic aspects that interested Dr. Freud to study a lot on the nerve system of animals. Sigmund Freud, as recorded by, Snelling was to the view the unconscious as a kind of cellar containing mainly what he called ââ¬Ëvisesââ¬â¢, all those aspects of himself that a person does not wish to confront- the unacceptable desires, aggressive impulses, painful memories and many other areas of ego. Snelling has established cure of all these consisted reclaiming this exiled material from the abyss of knowing and restoring it to the province of consciousness- or in Freudian terminology: restoring it to the ego from the Idd, a process that Freud compared to reclaiming land from the sea, (Snelling, 295). If Freudââ¬â¢s tendency had been essentially secular, according to John Snelling then Jungââ¬â¢s ideas brought the new psychology into the area once regarded as the preserve of religion (293). Indeed he began to see the role of analysis not merely as directed towards curing neurotic symptoms but of assisting harmonious development, the flowering of individual potential, and ultimately towards securing a transformation that would take the individual beyond himself. John Snelling writes: ââ¬Å"The fact that the approach to the numinous is the real therapy and inasmuch as you attain to the numinous experiences you are released from the curse of pathologyâ⬠. (Snelling 253). To accord due credit to Jung, however, it must be said that many western Buddhists have found that this ideas represent useful bridge into exotic world of Eastern spirituality. Some have gone so far as to undertake Jungian analysis and have found helpful, particularly in dealing with psychological problems. According to John Snelling, Alan Watts was able to explain on this in his writing of the seven symbols of life (1936); Watt propounded the idea that Buddhism has more in common with psychotherapy than with religion as the term was then understood in the west. Psychotherapy and Buddhism are intermarried and each has its part to play in assisting in its full realization, psychotherapy in helping to develop a sound ego, Buddhism in taking the process on from there, (Snelling, 298). Religion of faith Buddha emphasized that his teachings had a practical purpose and should not be blindly clung to. He the Dharma to a raft made by a man seeking to cross a dangerous hither shore of a river, representing the conditioned world, to the peaceful further shore, representing Nibanna (M. 1. 34-5). He then rhetorically asked whether such a man on reaching the other side should lift the raft and carry it around with him there. He therefore said, Dharma is for crossing over not for retaining, that is a follower should not grasp at Buddhist ideas and practices, but use them for their intended purpose, and then let go of them when they had fully accomplished their goal. Many ordinary Buddhists, though do not have a strong attachment to Buddhism. While the Buddha was critical to blind faith, he did not deny a role for soundly based faith or trustful confidence (saddha) for to test out his teachings, person had to have at least some initial trust in them. He emphasizes a process of listening, which arouses saddha, leading to deeper saddha and deeper practice until the heart of the teachings is directly experienced. A person then becomes an Arahat, one who has replaced faith with knowledge. Even Theravada Buddhism, which often has a rather rational unemotional image, a very deep faith in the Buddha, Dharma and Sangha is common. Ideally this is based on the fact that some part of Buddhaââ¬â¢s path has been found to be uplifting, thus inspiring confidence in the rest. Many people though have a calm and joyful faith (pasada) inspired by the example of those who are well established on the path. In essence therefore, Buddhism is a religion that is based on aspects of faith. In actual sense Buddhism is a religion where faith is exercised for the purposes of perfection. We therefore accept the fact the statement of acclaim that Buddhism is a religion of faith holds. Buddhism does not demand that anyone accepts their teaching on trust. The practitioner is instead invited to try them out, to expriment with them. John Snelling writes and says there is no compulsion and it happens to find truth elsewhere or otherwise all well and good, (Snelling, 4). The essential freedom from dogma is enshrined in the Buddhaââ¬â¢s words to the Kalama, a people who lived in the vicinity of the town of Kesaputta: â⬠Come, Kalamas, do not be satisfied with heasay or with tradition or with legendary lore or with what has come down in your scriptures or with logical inference or with weighing liking for a view after pondering it over or with the thought ââ¬Ëthe monk is our teacherââ¬â¢ When you know in yourselves ââ¬Ëthese ideas are unprofitable, liable to censure, condemned by the wise, being adopted and put into effect they lead to harm and suffering ââ¬Ë, then you should abandon themâ⬠¦ ( and conversely:)when you know in yourselves these things are profitableâ⬠¦ ââ¬Ë then you should practice them and abide in them. â⬠(Snelling, 3). Philosophical foundations According to John Snelling, in his The Buddhist Handbook: A complete Guide to Buddhist Teaching and Practice Buddhism as a religion is based o philosophical foundations. He writes: ââ¬Å"At the core of Mahayana philosophy lays the notion of emptiness: Shunyata. Buddha very much in the spirit of anata as first teaches this. It is not used to imply, not mere or sheer nothingness, but ââ¬Ëemptiness of inherent existenceââ¬â¢; that is, the absence of any kind of enduring or self ââ¬âsustaining essence. There is also a sense in which it has connotations of conceptual emptiness: absence of thoughts. It could be regarded too as a non-term signifying the ineffable understanding arising within the practice of meditationâ⬠¦Ã¢â¬ Therefore, Shunyata as used by Buddha has formed this philosophical foundation in Buddhism, although in addition to this Snelling introduces another key term tathata which according to Buddhism philosophical foundations means ââ¬Ëthusnessââ¬â¢ or ââ¬Ësuchnessââ¬â¢ which signifies Emptiness in its immanent aspect: as it appears in the world of form. The Buddha, as Snelling writes, is sometimes called the Tathagata: ââ¬ËHe who is thus goneââ¬â¢. The Tathagata-garbha (garbha means ââ¬Ëgermââ¬â¢) doctrine, on the other hand, proposes the notion of an imminent Absolute: the manifestation in form of a transcendental principle, (Snelling,5). Therefore it is true Buddhism has some philosophical foundations as it written by John Snelling, (Snelling, 4). In conclusion we have seen that Buddhism involves that Buddhism has evolved on the basis of some philosophical foundations and that it involves psychological, religious, some mystical experience and meditations. Unlike other religions, Buddhism holds the religious perfection in which one should not clung of practical faith but should eventually make it to knowledge. Therefore, this makes it more a practical experience. It is such aspects, according to John Snelling that drive us to believe that there is no Buddhism but only Buddhists. REFERENCES Snelling, John. The Buddhist Handbook: A complete Guide to Buddhist Teaching and Practice. London: Rider, 1987. How to cite The Essense Of Buddhism, Papers
Friday, December 6, 2019
Research on the Acoustic Impedance-Free-Samples-Myassignmenthelp
Question: Discuss about the effect of the material acoustic impedance on two major scenarios. Answer: Introduction The propagation of small sound pressure waves through a medium is termed as acoustics. The area has been of great interest to the scholars as attempts are made to scientifically uncover the key aspects of the propagation phenomenon. Notably, acoustic impedance is among the issues that research scientists have focused their energy to develop the concept further with the intention to explain how the phenomenon occurs and the various parameters that can affect it for a given material. In this brief study, great attempts are made to determine the methods and applications involved. Classical deterministic models are often used to mathematically draw a scenario of acoustic impedance and how it depends on the frequency. In this paper, therefore, two methods with accompanying practical applications will be elucidated; such methods as the ultrasound with applications in the spatial compounding. Now, there are two major applications alongside the methods that are currently in use. Therefore, t he aim of this paper is to uncover the fundamental principles and practice in the study of acoustic impedance. Certainly, the paper will greatly serve as a substantive material in the furtherance of acoustic impedance concept in the practical world. Methods of measuring acoustic Impedance The 2-microphone transfer function This method is implemented using an impedance tube with two microphones situated at positions whose distance apart is known. The concept is as follows: An incident wave is propagated from loudspeaker and a reflected wave result. The standing-wave phenomenon can then be used to measure various characteristics like impedance, wavelength and frequency. It should be noted that the tube is in-situ in the set up. The plane wave is made to travel in the duct and the frequency is limited by the geometric properties of the tube such as diameter and speed of sound in air. Mathematically, the upper limit frequency, according to Chalmers (2012) must be: Fu0.58Co/d.(1) The speaker will act as a source of sound wave and the incident pressure wave is denoted PR Notably, the complex sound pressure at the microphone position is given by: P1= P1(x1) + PR(x1)= P1e-jkx1 + PRejkx1(2a) P2= P1(x2) + PR(x2)= P1ejkx2 + PRe-jkx2 The microphone would then detect the signals (both the incident and reflected pressure waves). However, due to internal amplitude and phase between the microphones, the microphone interchange method can be used to minimize this mismatch (Chalmer, 2012). Finally, the transfer function of both the incident and reflecting waves between the microphones can be derived using the general equations 3(a) and 3(b): H1= P1(x2)/P1(x1)= P1e-jkx2/P1e-jkx1= ejks3(a) HR= PR(x2/PR(x1)= PRejkx2/PRejkx1= e-jks3(b) Where s=x2-x1 The reflection coefficient R can then be determined (which is actually the ratio of the complex reflected and incident pressures. Rx=x1= H12-H1/(HR- H12)(3) But note that there is normally a portion of the incident propagating wave that is not reflected but absorbed, that is given by: = 1-/R/2.(4) The surface acoustic impedance is therefore give as: Zs= Zo(1+R)/(1-R) where Zo= PoCo acoustical characteristics impedance of air Effect of frequency on the impedance The acoustical impedance is affected by the source frequency such that low frequency sources result in lower impedance intensity hence reduced impedance level. However, best performance of the set up occurs at a particular low frequency region as given by equation 1. Besides, the diameter of the tube plays a pivotal role on the frequency range allowable in the method. Higher frequency above the given limit is often constrained by the tube diameter. Wave decomposition method In the previous method, consideration was made for plane waves only hence the model is limited to certain applications. However, here the wave decomposition method can cover the oblique-incident and normal pressure waves hence applicable to higher modal order modes (Schultz, Cattafesta Sheplak, 2006). The method depicts a one-dimensional lined duct with an excitation speaker at one end and impedance boundary on the other end. There is normally a material that will be inserted at the duct-end such that during propagation, the material produces, in part, a reflective and reactive boundary hence complex transfer function results. Mathematically, dU/dx(L, t)= -k(1/c)dy/dt(L,t).(5) Where k= complex acoustic impedance X= L,U(L,t)= fluid particle displacement at x=L C= sonic wave speed in the duct (m/s) t = time variable x= spatial variable (m) L= length of the duct (m) Hence equation 2 illustrates how the impedance can be determined using the method once the experiment is performed: Re(T)+iIm(T)= Re(k) cos [w/c(x-L)+i{Im(k)Cos{w/x(x-L)-sin[w/c(x-L)/Re(k) Cos (w/cL)+i{Im(k)cos(wl/c)+sin(wl/c)}(6) The acoustic pressure of the system is proportional to the spatial derivative of the particle displacement P(x,t)= -pc2dU/dx(x,t) Application of Acoustic Impedance The turbofan engine acoustic The two-microphone transfer function method can be used in the turbofan engine to analyze the material acoustics making up the compressor and the turbine. The model first considers the system to be such that the phenomenon occurs in lined ducts with an axial flow of the sound pressure waves. There is need to know the boundary conditions at the walls and at the treatment surfaces (Malmary Carbonne, 2001). According to Malmary Carbonne (2001) the normalized acoustic impedance is given as: Zt= 1/PoCo x (P/vn) . (1) where P= acoustic pressure at a point of the surface of the liner, v = acoustic velocity at the same point, n= normal to the surface of the liner, Co=speed of sound in air and ?= air density However, a part from the layer impedance, there is cavity impedance which must also be factored in hence the total acoustic impedance from the system is given by: Zt= Z-jcot(KL) ... (2) where K= acoustic wave number, K=w/co and L= cavity depth Therefore, critical parameters that will determine the relevance of the model in the practical sense include: the dimensional property of the attenuating medium and the flow characteristics such as mach number, frequency among others which mathematically can be represented as: Z= z(e,d,?,w,/v/, M).(3) Where w= sound pulsation /v/= amplitude of the normal acoustic velocity M= Flow Mach number However, it should be noted that the above model is linearized where the frequency characteristic relates with the acoustic impedance as follows: Firstly, for a perforated pipe, according to Malmary Carbonne (2001) the impedance is given as: Z= r+jX ..(4) Where r= (8vw)0.5/?Co(1+e/d) +1/8?(kd)2 and X= w/?Co[e+8d/3(1-0.7?0.5) +(8v/w)0.5(1+e/d)] However, as pointed out earlier, this model is not sufficient in its entirety so to speak; because the real-world acoustic systems often exhibit non-linear behavior hence a further extension to the method is necessary. However, there are other more specific methods that utilize the acoustic impedance phenomenon with their underlying applications as discussed in the next paragraphs Spatial compounding More often, acoustic impedance measurements could be used in the generation of the ultrasound images but problems of occlusions may hinder the performance in situations where the material acoustic impedance is high. Unlike the other scenarios, where the mean of the impedances can be used in a straight fashion; this case requires the beam intensity to be increased so as to overcome the material impedances. This is what is termed as spatial compounding. Hence often the material acoustic impedance will have to be known from the standardized models after which the system design will take root. Nevertheless, spatial compounding ensures that the ultrasound imaging is a near excellent result while overcoming the layer impedances during propagation (Malmary Carbonne , 2001). References Dingzeyu Li, David, I, Matusik, W Changxi Zheng, C. (2016). Acoustic Voxels: Computational Optimization of Modular Acoustic Filters. Available from: https://www.cs.columbia.edu/cg/lego/acoustic-voxels-siggraph-2016-li-et-al.pdf Malmary, C Carbonne, S. (2001). Acoustic impedance measurement with grazing flow. Available from: https://perso.univ-lemans.fr/~yauregan/publi/AIAA-2001-2193.pdf Rienstra, S.W Hirschberg, A. (2017).An Introduction to Acoustics. Eindhoven University of Technology. Available from: https://www.win.tue.nl/~sjoerdr/papers/boek.pdf Wachinger, C, Shams, R Navab, N. (2008). Estimation of Acoustic Impedance from Multiple Ultrasound Images with Application to Spatial Compounding. Available from : https://campar.in.tum.de/pub/wachinger2008impedance/wachinger2008impedance.pdf Chalmers. (2012). Evaluation of impedance tube methods - A two microphone in-situ method for road surfaces and the three-microphone transfer function method for porous materials. Available from: https://publications.lib.chalmers.se/records/fulltext/178260/178260.pdf Utsuno, H., Toshimitsu Tanaka., T Fujikaw., T. (1989). Transfer function method for measuring characteristic impedance and propagation constant of porous materials. Available from: https://spectronics.net/resources/Technical%20Papers/Bulk%20Properties_1.pdf Yunseon, R. (no year). The Acoustic Impedance Measurement System using two microphones. Available from: https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.612.6612rep=rep1type=pdf Vorlander, M. (2013). Acoustic Measurements. Available from: file:///C:/Users/Otieno/Downloads/9783540240525-c1.pdf Pcfarina. (2006). Acoustic Impedance Measurements. Available from: https://pcfarina.eng.unipr.it/Public/Standing-Wave/ebook_6_impedance.pdf Schultz,T., Cattafesta,L.N Sheplak, M. (2006). Modal decomposition method for acoustic impedance testing in square ducts. Available from: https://asa.scitation.org/doi/10.1121/1.2360423 Hull, J.A. (1992). A Comparison of Acoustic Impedance Measurement Techniques. Submarine Sonar Department. Available from: https://www.dtic.mil/dtic/tr/fulltext/u2/a255566.pdf Pcfarina. 2006. Acoustic Impedance Measurements. Available from: https://pcfarina.eng.unipr.it/Public/Standing-Wave/ebook_6_impedance.pdf Spatial and Frequency Compounding in Application to Attenuation Estimation in Tissue Ziemowit KLIMONDA, Jerzy LITNIEWSKI, Piotr KARWAT, Andrzej NOWICKI Institute of Fundamental Technological Research Polish Academy of Science. Available from: https://www.ippt.pan.pl/Repository/o2659.pdf Thesis. Chapter 3 -Basic Acoustic Modeling. Available from: https://theses.lib.vt.edu/theses/available/etd-10232000-10320002/unrestricted/Chap3.pdf Williams, L Wilkins. 2009. Acoustic Impedance. Walters Kluwer Health. Available from: https://www4.uwsp.edu/physastr/kmenning/Phys115/Link5-09_acoustic_impedance.pdf Wolkesson, M. 2013. Evaluation of impedance tube methods - A two microphone in-situ method for road surfaces and the three microphone transfer function method for porous materials Masters Thesis in the Masters programme in Sound and Vibration. Chalmer University of Technology. Available from: https://publications.lib.chalmers.se/records/fulltext/178260/178260.pdf
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