Novel Elliptic-function Low-pass Filter (LPF)

Novel Elliptic-function Low-pass Filter (LPF) Performance of microstrip low pass filter with stub loaded Electromagnetic Band Gap ground plane Mariselvam V, Raju S Abstract A novel elliptic-function low-pass filter (LPF) is Presented, which consists of a Electromagnetic band gap on the ground plane. The Electromagnetic band gap provides the required wideband attenuation in stop band, while the slot provides steep transition from pass band to stop band. A 5.4 GHz five-pole LPF is developed and experimental results show that it has a sharp cutoff frequency response. The measured pass band insertion-loss is below 0.4 dB, and the rejection band over 15 dB is from 5.425 GHz to 8.25 GHz, Which increases from 2.95 GHz.      Keywords:  Defected ground structure (DGS), elliptic-function filter, low-pass filter (LPF). 1. INTRODUCTION Recently, defected ground structure (DGS) has become one of the most interesting areas of research in microwave and millimeter wave Applications [1]. It could be widely used in microwave circuit design such as power divider, power amplifier and especially in filter design [1–9]. Low pass filters (LPF) design require that both in-band and out-band performances should be: low loss, high selectivity, high rejection, and wide spurious free frequency ranges. Many novel types of microstrip filters have been proposed and designed. Periodic or non-periodic DGS are realized by etching a slot in the backside metallic ground plane. The etched slot disturbs effectively the current distribution in the ground plane of microstrip line and the results in resonant characteristics [2, 3]. IT is well known that typical properties of low-pass filters (LPFs) can be obtained by adding periodic structures to transmission lines. The representative periodic structures for planar transmission lines and/or microwave circuits are photonic band gap (PBG) and defected ground structure (DGS) [4, 5]. The PBG has been known as a popular periodic structure for planar transmission lines. However, drawbacks of PBGs have been also discussed as follows. 1) A large area is needed because a number of periodic patterns should be adopted. 2) It is obscure to define the unit element, and difficult to extract the equivalent-circuit elements for the PBG unit element. 3) Therefore, it is very restricted to extend its practical application to microwave circuits. To the contrary, one can easily define the unit element of the DGS and model the equivalent circuit. In addition, since only a few DGS elements show the typical properties of periodic structures, the resultant circuit size becomes relatively small. Furthermore, the structure of the DGS is simple and it is easy to design the DGS pattern. For these reasons, since [4] has introduced the structure and called it a DGS for the first time, the DGS has been extensively applied to design microwave circuits such as filters, power dividers, couplers, amplifiers, oscillators, and so on [1], [6]–[12]. There is much previous research about the characteristics of LPFs having periodic structures on microstrip or Coplanar waveguide (CPW) transmission lines [13]–[16] However most of them are not analytical because they mainly depend on electromagnetic (EM) simulations to design LPFs and predict circuit performances. To the contrary, in the design of LPFs using DGSs including this study, all design steps are based on theories and reasonable explanations as follows. The equivalent-circuit elements of the DGS is extracted and used for replacing the series inductances in the LPF Prototype circuit. The LPF is composed of the extracted equivalent lumped Elements, thus, it is an ideal LPF, is designed, and is compared to the realized LPF using the DGS practically. Two methods to design a three-pole LPF using the DGS has been proposed in [1] and [6]. In these papers, the sizes of two DGS patterns in the LPF were exactly the same because two inductances in the three-pole â€Å"L1 (series) C2 (shunt) L3 (series)† prototype LPF are identical. In [6], discontinuity elements such as tee- or cross-junctions were adopted to connect open stubs to realize the shunt capacitance. However, in the three-pole LPF proposed in [1], there are no junction elements, thin transmission lines for high impedance, or open stubs. In addition, the width of the transmission-line elements in the LPF has been remarkably broadened. Thus, advantages such as compact design and error-robust realization fabricating the layout have been obtained. However, in order to design -stage LPFs using the DGS, e.g., a five-stage like â€Å"L1 (series) C2 (shunt) L3 (series) C4 (shunt) L5 (series),† two different dimensions of the DGS have to be adopted because L3 is no t equal to L1=L5, although. In order to select the proper dimension of the DGS for L3 careful consideration based on filter theories, extracted equivalent- circuit elements of various DGS dimensions, and some related topics of transmission lines should be taken. The size of the DGS for L3 is determined by accurate curve-fitting results for equivalent-circuit elements to correspond exactly to the required inductance. In addition, the length of transmission-line elements between DGS patterns is determined through the consideration for the equivalent capacitance and additional parasitic inductance, as well as the required shunt capacitances in the prototype LPF. Therefore, a design of a five-pole DGS-LPF requires many more complex steps than the previous three-pole DGS-LPF shown in [1] and [6]. Thus, the goal of this paper is to propose a new technique to design an -pole LPF having (â€Å"DGS-LPF†), and to generalize the previous design method for N>5 using different sizes of DG S patterns. For this purpose, modeling for the equivalent circuit of the DGS, a curve fitting for determining the required different sizes of the Fig.1 Top view of the Microstrip line with a DGS pattern and its dimensions in mm Fig.1a. Bottom view of the Microstrip line with a DGS pattern and its dimensions in mm DGS that reflects the inductance values in the prototype LPF and a practical design example will be successively discussed. In order to show the validity of the proposed method, a five pole DGS-LPF, as an example, is designed and measured in this paper. The five-pole DGS-LPF has a much wider microstrip line than conventional microstrip LPFs, and does not include high-impedance lines, which have been essentially required in conventional design. The series inductances in the prototype LPF are realized by DGSs, while the shunt capacitances are realized by the widely compensated transmission line. Therefore, no discontinuity elements such as tee- or cross-junction for connecting open stubs are required because there are no stubs in the DGS-LPF. 2. DGS PATTERN AND MODELING FOR THE EQUIVALENT CIRCUIT Fig. 1and 1a shows a microstrip line having a dumb-bell DGS and its -parameters from an EM simulation. Two elliptical defected areas and one connecting slot correspond to the equivalently added inductance (L) and capacitance(C), respectively. Accordingly, a resonance occurs at a certain frequency because of the parallel L–C circuit. Inversely, it is intuitively known that the equivalent circuit includes a pair of parallel inductor– capacitor from the resonant phenomenon in the -parameter. This means the microstrip line having the DGS does not have all-pass characteristics, but restricted pass band properties. Fig.2. Equivalent circuit of the microstrip line with unit DGS using ADS In addition, slow-wave characteristics are observed due to the added– components of the DGS [3], [5], [9]. The defected areas can be realized by not only ellipse, but also other geometries such as triangle, circle, hexagon, octagon, spiral, and so on. It is very clear that the resonant frequency (wo) of the DGS and 3-dB cutoff frequency (wc 3dB) exist as shown in Fig. 1.The equivalent – circuit of the DGS can be extracted because this kind of electrical characteristic is observed from a typical L –C parallel resonant circuit. The equivalent circuit of the DGS and one-pole Butterworth prototype of the LPF are presented the DGS in Fig. 2. The equivalent L– C elements are calculated by (1–3) because two reactance values of Fig. 2(a) must be equal at wc 3dB as follows XLc= (1) XL = ωZo g1 (2) XLc | ω= ωc, (3) Where w'(=1), g1 (=2) and Zo (=50ÃŽ ©) are the normalized 3-dB cutoff frequency, element value of one-pole Butterworth prototype LPF, and port impedance, respectively, and wo = (1/√ Lk1Ck1). The calculated L2and c2 of the DGS shown in Fig. 2 are 3.2 nH and 0.8194 pF, respectively. Fig. 3 shows an excellent agreement between the previous -parameters shown in Fig. 1 and the new ones calculated using Lk1and ck1. Advanced Design System (ADS), a circuit simulator from Agilent Technologies, has been used for the calculation. This agreement means that the modeling technique is valid in extracting the equivalent-circuit elements. It should be noted that this is one of the great advantages of DGS because it is possible to define the unit element of the DGS and to establish the equivalent circuit of it, while the conventional Planar transmission lines with a periodic structure such as a PBG have difficulty in defining the unit element and to extract the modeled circuit element. 2.1 DESIGN OF THE FIVE POLE LOWPASS FILTER A. Prototype LPF and Adoption of DGS The method to design a five-pole LPF using the DGS is discussed here. Fig. 3 depicts the prototype circuit of a five-pole LPF. Here gi (i=0, 1, 2, 3, 4, 5, 6), represent the normalized element values of a Chebyshev prototype LPF for the given ripple [17]. According to the design theory of filters, in order to transform the prototype LPF to the LPF composed of lumped elements, the values of L1,C2,L3,C4 and L5can be determined owing to the impedance and Fig.3. Five-pole Chebyshev prototype LPF with Elliptic DGS Fig.3a. Equality of a series inductor to an LC parallel circuit frequency scaling rules expressed in (4)–(6). Here, ωc means the Cutoff frequency of the LPF L1 = = = L4 (4) L3 = (5) C2 = = C4 (6) Fig.4. Performance of the designed five pole LPF using ADS Fig.5. Performance of the designed five pole LPF using CST 2.2 PERFORMANCE OF THE DESIGNED DGS-LPF FIG. 6 shows the measured S-parameters of the designed DGS-LPF, as compared with the theoretical performance (circuit simulation) and the EM simulation by CST-MWS. As shown, the measurement result agrees with the EM simulation very well. The designed elliptical function DGS-LPF exhibits a much shaper transition knee than the Chebyshev one reported in [5]. Its transition bandwidth from 1 to 20 dB attenuation is only 0.45 GHz. The measured pass band insertion loss is less than 0.3 dB. The stop bandwidth corresponding to 15dB rejection is from 2.95 to 8.25 GHz. The total length of the designed DGS-LPF is 17 mm, and compared with the LPF reported in [5], it is reduced about 40.88% and compared with the LPF reported in [6] it is reduced about 14.66%. Fig.6. Measured result of the designed five pole LPF using Agilent Network analyzer N5230A 3. PERFORMANCE OF THE PROPOSED DGS LOWPASS FILTER Fig.7. Top view of the Microstrip line and its dimensions in mm Fig.7a. Bottom view of the Microstrip line and its dimensions in mm The proposed five-pole DGS-LPF has a much wider microstrip line than conventional microstrip LPFs, and does not include high-impedance lines, which have been essentially required in conventional design. The series inductances in the prototype LPF are realized by DGSs, while the shunt capacitances are realized by the widely compensated transmission line. A stub like elements which gives a inductance effect is introduced in the proposed DGS-LPF. DGS combined with microstrip line causes a resonant character of the structure transmission with a resonant frequency controllable by changing the shape and size of the slot. There is a huge evolution in terms of defected shapes: dumbbell, periodic, fractal, circular, spiral, and L shaped [12–14]. In this paper, a novel elliptic shape DGS is proposed for the LPF design. The use of elliptic shape DGS will be shown to give sharp cut off frequency response as well as a good performance in the pass band. The analysis of the dimension parameters with different dimension parameters was demonstrated as a design guide. The equivalent circuit (EC) has been extracted to characterize the proposed low-pass filter. The equivalent circuit model agrees with the field simulation results. The theoretical and measured results are presented with good agreement for LPF. The total length of the designed DGS-LPF is 15 mm, and compared with the LPF reported in [5], it is reduced about 60% and compar ed with the LPF reported in [6] it is reduced about 29%, the pass band increases up to 5.425 GHz from 2.95 GHz and the stop bandwidth corresponding to 15dB rejection is from 5.425 GHz which is suitable for WLAN application Fig.8. Comparison Performance of the designed five pole LPF Fig.9. Equivalent circuit of the microstrip line with unit DGS using ADS Fig.10. Measured result of the proposed five pole LPF using Agilent Network analyzer N5230A Tab 1: Performance of the five pole LPF using CST Tab 2: Dimensions of the proposed DGS designs Tab3. Prototype elements of the five pole elliptic function LPF Fig.11. Top view of the prototype Fig.11a. Bottom view of the prototype 4. CONCLUSION This letter has presented a new LPF to obtain elliptic-function response using Dumbbell shaped DGS. The designed LPF exhibits sharp cutoff frequency response, low insertion loss, and excellent stop band performance. The proposed design procedure can be extended to arbitrary -stage LPF. In addition, its physical structure is only composed of defect and microstrip line, so it is easy to fabricate. Since this design is simple, analytical, and does not require any optimization process, this kind of equivalent circuit model of DGS and its design technology may be further applied to various microwave circuits such as low-noise amplifiers, diplexers, mixers, and so on. References SERGIO PALMA PACHECO, JIANEI WANG, JONG- GWAN YOOK, AND LINDA P. B. KATEHI, â€Å" Micromachined Filters on Synthesized Substrates Rhonda Franklin Drayton,† IEEE Trans. Microwave Theory Tech, 2001, Vol. 49, No. 2. SYSTEMS PIERRE BLONDY, ANDREW R. BROWN, â€Å"Low-Loss Micro machined Filters for Millimeter-Wave Communication†,1998 IEEE vol.38, pp 22-23. C. Y. CHI AND G. M. REBEIZ â€Å"Conductor loss limited stripline resonator and filters,† IEEE Trans. Microwave Theory Tech., 1996, vol. 44, pp.626–629. S. V. ROBERTSON, L. P. B. KATEHI, AND G. M. REBEIZ, â€Å"Micromachined self-packaged W-Band bandpass filters,† in IEEE MTT-S Symp. Dig., 1995, pp. 1543–1546. J. S. LIM, C. S. KIM, D. AHN, Y. C. JEONG, AND S. NAM, â€Å" Design of low-pass filters using defected ground structure,† IEEE Trans. Microw.Theory Tech., 2005, vol. 53, no. 8, pp. 2539–2545. JINPING YANG AND WEN WU â€Å"Compact Elliptic-Function Low-Pass Filter Using Defected Ground Structure† IEEE Microwave and Wireless components letters, 2008, Vol. 18, No. 9. GAËTAN PRIGENT, ERIC RIUS, FRANÇOIS LE PENNEC, SANDRICK LE MAGUER, CÉDRIC QUENDO, GONZAGUE SIX, AND HENRI HAPPY, â€Å"Design of Narrow-Band DBR Planar Filters in Si–BCB Technology For Millimeter-Wave Applications † 2009 IEEE xplor.Vol.13. R. F. DRAYTON, S. PACHECO, J.-G. YOOK, AND L. KATEHI, â€Å"Micromachined filters on synthesized substrates,† in IEEE MTT-S Int. Microwave Symp. Dig., 1998, pp. 1185–1188. S. DEEPAK RAM PRASATH, A. THENMOZHI, P. SRINIVASABHARATHWAJ, S.RAJU, AND V.ABHAIKUMAR â€Å"A Novel Miniaturized Filter on Micromachined Multilayered Substrates† IETE 2008, Vol.54, No.2. RHONDA FRANKLIN DRAYTON, SERGIO PALMA PACHECO, JIANEI WANG, JONG-GWAN YOOK, , AND LINDA P. B. KATEHI â€Å" Micro machined Filters on Synthesized Substrates†, IEEE Trans. Microwave Theory Tech.,2001, vol.49, no. 2. S.RIKI BANERJEE AND RHONDA FRANKLIN DRAYTON, â€Å" Circuit Models for Constant Impedance Micro machined Lines on Dielectric Transitions†, IEEE Trans. Microwave Theory Tech.,2004, vol. 52, no. 1, pp. 105-111. B.F. ZONG, G. M. WANG, H. Y. ZENG, Y. W. WANG. â€Å"Compact and High Performance Dual-band Bandpass Filter using Resonator-embedded Scheme for WLANs† RADIOENGINEERING, 2012, VOL. 21, NO. 4. K.ANNARAM, SURESH NITHYA. â€Å"Investigation of Compact Low Pass Filter with Sharp Cut–Off using Metamaterial† RADIOENGINEERING, 2013, VOL. 22, NO. 3. PIERRE BLONDY, ANDREW R. BROWN, DOMINIQUE CROS AND GABRIEL M.REBEIZ, â€Å"Low-Loss Micro machined Filters for Millimeter-Wave Communication Systems†, 1998. JIA-SHENG HONG AND M.J.LANCASTER, â€Å" Microstrip Filters for RF/Microwave Applications †, John Wiley Sons, Inc., 2001 About Authors Mariselvam VENKAT Obtained his BE degree from PTR College of Engineering and Technology, Madurai and ME from Thiagarajar college of Engineering Anna university Chennai in 2010 respectively. He is now pursuing PhD in the Electronics and Communication Engineering department, Thiagarajar College of Engineering, Madurai., India. His area of interests includes microwave and millimeter wave circuits. [emailprotected] Raju SRINIVASAN Obtained her BE degree from the PSG college of technology university of madras ,India and M.tech degree from NIT Trichy ,India 1982 and 1984 respectively she received her PhD from Madurai Kamarajar University, Madurai in 1996 .She is now working as a professor and head of the department of Electronics and Communication Engineering Department, Thiagarajar college of Engineering Madurai, India her areas of research interest are wireless technologies, RF circuits and systems. [emailprotected].

Portrayals and Presentation of Cancer in Cinema

Portrayals and Presentation of Cancer in Cinema INTRODUCTION Through years, many movies have been released for public viewing regarding cancers of all types. Depictions might include the nature of cancers, patients’ response, care-givers’ response, and the clinical outcomes. Since movies may affect thoughts of the viewers, outcomes in movies may affect decision making of the patient or caregiver and may affect care-seeking behavior, the way they react to the situation and their compliance to treatment. At present, films featuring cancer patients are no longer a rare scenario, as stated in a press release at the ESMO 2012 Congress of the European Society for Medical Oncology. Many cancer movies were released for viewing, however, the portrayal of the patient’s chances of survival are rarely accurate. In 82 movies that focused on cancer patients, Dr Luciano De Fiorre et al, found that descriptions on cancer experience in the films were not reflective of cancer in its scientific meaning. In the Philippines, there are only few movies that feature a person/persons with cancer. And in most of the Filipino movies that depict cancer, cancer patients are diagnosed late and hospitalization with other therapeutic modalities are not clearly seen. Cancer patients experiences described in the movie were so different from the truth. Davaoenos, like most Filipinos, see that cancer is always worse in the movies. The illness is usually depicted as death sentence. To our knowledge, no previous descriptive reviews of movies about cancers in children, adolescents, and young adults have been documented, hence this research. Review of Related Literature Medical portrayals in the media, including depictions of clinical outcomes, may impact public perceptions and health decision-making. Media greatly affects people’s behavior toward a certain event and the said response varies in each individual, depending on how they perceive or understand. What we see affects what we think, and thoughts may become action. We act upon what we see thru imitation (Koordeman et al 2011) Both market research and anecdotal case reports have long claimed that the general public learn and form reactions regarding health conditions based on what is seen on television (Eisenman et al., 2005) (Tayal, 2003). Increasingly, media has not only been an entertainment tool, but has been applied deliberately as a health educational source, as â€Å"entertainment education† in different countries (Hether H.J et al, December 2008.) Some people do not only rely to medical professionals regarding their health. According to one study, (Kowalczyk et al, 2012)o lder generations greatly depend on internet in gaining information about cancer, hence it must be ensured that they are gaining information from a reliable source. Cinema had also been used for medical-educational purposes (Akram et al, 2009). More recently, entertainment education has been attempted on the topic of cancer as well, for instance promoting breast cancer awareness in adults. The extent and nature of depictions of cancers in children, adolescents and young adults, however, remain less clear. Negative perceptions result from negative portrayals and negative outcomes. In one research, it was noted that there had already been lots of motion pictures with negative portrayals of the medical profession (Thibodeau et al, 2007). In another research with 131movies as sample size, it was pointed out that physicians were portrayed negatively in 44% of movies and that 27% of the sample size had medical inaccuracies. (Flores et al, 2002). There may be a wide disparity between public perceptions and scientific findings. This usually happens when we are convinced by what we saw or hear on the news and not relying on the scientifically documented events. Movies like â€Å"Erin Brokovich† let the people think that cancer in New Jersey and Long Island, New York trigger the cancer clusters (Robinson D,2002). In reality, it is not only the purely environmental exposures that may lead to cancer. After carefully studying 82 movies that centre on a person with cancer, Dr Luciano De Fiore et al, found experiences pertaining to cancer as described in the films were not reflective of the truth. In the movies the researchers studied, 40 characters with cancer were women, and 35 men. In 21 films the type of cancer was not mentioned. Symptoms were considered in 72% of the movies, while diagnostic tests were mentioned in 65%. The most frequent treatment mentioned in the movies was chemotherapy followed by pain-relief. Death occurred in 63% of all movies). Doctors and nurses turned up in 58 films (77%). (De Fiore, 2012) If we are exposed to wrong information, we will be living in wrong direction. If cancer patients in movies die without a fight, diagnosed cancer patients may also choose to die without a fight. It is the government’s role to protect the viewers from what they see. Some research had already pointed good representations about cancer in movies. Some movies are informative and the role of medical research in overcoming the disease is already highlighted ( Lederer SE,2007). A positive outlook about cancer is very possible if people will see realistic portrayals in movies. Movies especially those containing health issues will give hope if those will not only show death and hopelessness of cure. At present, there are movies with scenes pertaining to health and death issues which contain inappropriate portrayals although it is worth mentioning that some movies remind audiences that not all scenes are based on real events but are reflective of the writer’s view. In a bigger perspective, it is not only cancer prevention consciousness is the major barrier in fighting against cancer. Poor language skills, low income and low education are contributory barriers (Loughridge, 2012). There must be a collaborative effort in our fight against cancer. Cancer patients, medical practitioners, health allies and the government must move to destroy against these barriers. In a press conference made during World Cancer Day, it was pointed out by Dr Lucio Lecciones that leukemia accounts 40-60% of cancer among patients in the Philippine setting. And that in Philippine Medical Center Hospital alone, the case rate is increasing by 30% annually. Deaths from leukemia accounts greater than the number of dengue shock syndrome, sepsis and prematurity combined. It was also stated that 70% of the newly diagnosed childhood cancer cases in the country were recognized in the late stages of the disease. Diagnosis was made when the cancer is no longer curable , even with the use of the most aggressive and expensive treatment. Socioeconomic status is also a great contributory factor to the abandonment to treatment. High cost of diagnostics and treatment affects survival rate and there is barely 2 in ten children surviving cancer. (Jet Villa, 2014) The Department of Health is active in the campaign for the fight against cancer. Educating people not only on how to prevent cancer, but also, how to survive it. Most doctors encourage prevention, as the saying goes â€Å"An ounce of prevention is better than a pound of cure- Benjamin Franklin. Cancer cases were increasing in number. There were more than 82, 000 new cancer cases, affecting both males and females in 2010 in a census from the Department of Health, Philippines. With the increasing trend in cases, it is estimated to reach 85, 000 new cases annually. According to Dr Ona, the number of cases is expected to double within the next decade. Cancer ranks third as the leading cause of death in the Philippines, according to PSMO president Felycette Gay Lapus. The risk factors in developing cancer include smoking, viral infections, sedentary lifestyle, alcohol and radiation. With the great number of people affected, vigilance to its warning signs, a healthy lifestyle and early treatment will shield the people against the disease. How can we expect cancer patients submitting themselves to doctors if most of the cancer movies show no hope for cure, portrayals of non compliance to treatment and death immediately after diagnosis. How can we expect people to gain true information when media has its own flaws in its portrayals. Much freedom is given for entertainment but not much is given to qualify information. Even if we have the most potent medicine or cure for patients, if we are directed by misleading information, science will still fail. In the end, it is not the therapy that will have a great influence to people but it us how they help themselves not to be victims of misleading information. There are only few movies that contribute or portray facts about cancer and even other health issues. With its double edge sword, vigilance to its content can prevent future deaths and maladies. Research Questions 1.What are the most common movie depictions of cancer in childhood, adolescents, and young adults? Are the depictions relevant and/or appropriately show the true nature of cancer- regarding its detection, treatment and outcomes? Do movies show the common symptoms of cancer? 2.Do movies discuss the care-givers’ and patients’ options to treatment? Do movies promote hospitalization among cancer patients? 3.What are the most common outcomes of cancer as depicted on movies? 4.What are the patients’ and caregivers’ response or coping mechanisms in dealing about cancer? 5.How do movies portray cancer in children, adolescents and young adults (AYA), including outcomes? Significance of the Study In our fight for cancer, we need to address problems about economy, problems arising from bad health habits and addressing the country’s education. Media is a double-edged sword promoting entertainment to people and depicting pictures which can be perceived as facts. Media can be merely entertaining or may be source of information. These informations may twist a myth into a fact, and wrong decisions may be produced. This study aims to explore movie depictions in children, adolescents and young adults through a review of cancer movies for the last twenty five years. Media becoming an entertainment-educational tool portrays a role in information dissemination thus may help in prediction of viewer’s attitudes towards cancer. This is an exploratory study of movies which aims to describe cancer depictions and portrayals. Our result will guide future research to better understand movies, including their effect on viewing public. Furthermore, this research specifically describes movies depictions as how they may affect viewers who are themselves patients and caregivers. Accurate result of this study will provide awareness to medical practitioners of the dismal movie depictions which will guide them on how to correct each. It will also help them understand why patients have feeling of fear and opted not to be treated medically. Practitioners may educate the public by showing the data in the hospitals Hospital administrators will be able to identify the dismal portrayals of cancer and promote scientifically based scenario thru health programs and by disseminating information thru all forms of media. It will also serve as an important tool in their advocacy in the fight of cancer. If we are exposed to wrong information, we will be living in wrong direction. If cancer patients in movies die without a fight, diagnosed cancer patients may also choose to die without a fight. It is the government’s role to protect the viewers from what they see. But the burden of correcting the moviemakers’ wrong portrayal of diseases specifically cancer lies on us physicians. It is hoped that this study will provide the figures of the disparity between fact and myth. Should the results of this study show significant dismal portrayals of cancer in movies, health allies will be obliged to warn public about the disparities in movies, especially those pertaining health. It is not only empathy that is elicited when viewing movies. Some persons may imitate whatever they saw, good or bad. Absolute correction of wrong portrayals may be impossible, however public warning will still help the viewing audience not to be misguided. Objectives 1.To characterize the depiction of cancers in children, adolescents and young adults (AYA) in English-language or –subtitled movies. 2.To gather data about the most common signs, symptoms and outcomes of cancer as depicted on movies 3.To gather data about behaviors and coping mechanisms of patients in response to cancer, as depicted on movies. 4. To gather data about behaviors and coping mechanisms of families, caregivers and/or significant others of cancer patients, as depicted on movies. 5. To gather data about where treatment is initiated on movies, and estimated time to live of cancer patients from time of detection. Design/Method A qualitative type of research will be used in this study. A preliminary list of mainstream, independent, and made-for-television movies produced from 1975 to 2010 will be independently identified by two authors through manual searches of the internet and movie databases, for English-speaking or English subtitled films. This will be made possible by searching from websites namely: www.google.com and www.youtube.com. Abstracts of movies will then be viewed thru www.imdb.com and will be decided whether they fit the inclusion criteria. Qualifying movies will then be viewed by the two authors. Included movies will be those movies containing individuals aged 29 and below whose signs and symptoms of cancer are noticeable by the audience. Data gathering about the variables regarding cancer, most common signs and symptoms of cancers, behavior of patients and families and the most common outcomes will then be gathered and tabulated. Setting Data gathering were done by the two researchers independently at home by viewing the movies included in the criteria. The outcomes of the data gathering are to be collaborated Inclusion Criteria Each of these criteria must be met for inclusion: 1.The cancer movies are released on public during the year 1975 to 2010. 2.The character of the movie, particularly the patient with cancer must be aged 29 and below and these characters clearly manifested signs and symptoms of cancer noticeable to the audience. Exclusion Criteria Either of these criteria being met will lead to exclusion: 1.Cancer movies released before year 1975 and beyond 2010 are excluded in the study, including those with cancer characters with age 30 years and above. 2.Cancer movies filmed between the year 1975-2010 which contains languages not clearly understood by the proponents of this research. 3. Movies which involve cancer patients who are not the main subjects of the film or cancer manifestations not highlighted in the film. Data Gathering Main outcome measures 1.The Variables of Cancer in an individual affected as reflected on movies 1.1.Age 1.2. Sex 1.3.Type of cancer Table2. The Most Common Signs and Symptoms, Treatment Options, Outcomes of Different Types of Cancer and Estimated Time to Live among Cancer Patients as Reflected on Movies 2.1.Physical effects 2.2.Treatment Options 2.3. Outcome of cancer 2.4. Estimated time to live among cancer patients Table 3.Behavioral Reactions of people toward cancer Behavioral reaction of patients toward the sickness Behavioral reaction of families/caregivers toward cancer 3.3.Where treatment is initiated Data Handling and Analysis The co-authors will review cancer movies based on the inclusion and exclusion criteria. The data from the movies included will be tabulated in a table. All of the movies viewed independently by the co-authors will be collaborated at the end of the 10-month study period. The data on age, sex, type of cancer, physical manifestation of different types of cancer, treatment options, outcomes and estimated time to live will be presented as frequency and percentage. Typical emotional process that most people with a terminal illness and families go through namely: denial, anger, bargaining, depression and acceptance will be presented in frequency and percentage. 1

Lorraine Hansberrys A Raisin In The Sun Essay -- Raisin Sun Dream Es

Lorraine Hansberry's A Raisin In The Sun A dream deferred is a dream put off to another time, much like this essay. But unlike dreams sometimes, this essay will get fulfilled and done with. Each character from A Raisin in the Sun had a deferred dream, even little Travis although his dream was not directly stated.   Ã‚  Ã‚  Ã‚  Ã‚  Their dreams become dried up like a raisin in the sun. Not just dreams are dried up though; Walter Lee and Ruth’s marriage became dried up also. Their marriage was no longer of much importance, like a dream it was post-poned and it became dry. Their struggle for happiness dried up because they had to concentrate all of their energies on surviving. Their needs seem no longer to be satisfied by each other. But they both saw a resolution in the insurance check arriving in the mail. The money would let Ruth fulfill her dream of owning her own house and leaving the apartment. Walter would use the money towards his dream of owning a business and not having to work for someone. This would allow him to provide for his family. Emotionally, the stress from not having their dreams realized has left them despising each other. Their sadness at unfulfilled dreams overlain with the burden of Ruth's pregnancy gets out of hand when Walter says, "Who even cares about you?" The two of them realize at that time that their relationship has dwindled to nothing but nagging and rude comments. Walter may be sorry for having said that to his wife, because he probably loves her, but he is at the end of his rope. He feels that every dream he has had has been taken away from him, either by bad timing or by the white man in general. Ruth, on the other hand, has never had any other dream except to keep her family together and in working order, and now that is falling apart.   Ã‚  Ã‚  Ã‚  Ã‚  Willy Harris was what festered like a sore and then ran away. He annoyed Walter Lee for money, causing Walter Lee to do the same but to his family. Mama was tired of listening about Walter Lee wanting to invest in a liquor store. Walter Lee's dream to own the liquor store and be his own boss caused his family much pain. A major reason being he lost all of their money in the investment. But because his family never listened to him about his dream, he would go out and drink. When Walter Lee came home drunk, most of what he had bottled up inside would lash out in a much more violent or ... ...have some money. The Younger’s were well aware that they were not wanted in the white neighborhood. At this point, there is a feeling of dislike towards Walter because he had blown off all the money. So what was expected was the he would continue worrying about money and sell their dream house. But instead he does an unexpected, honorable thing. He surprises the family by changing his mind and deciding to move into the house. I was also moved by what Mama said. â€Å"Son—I come from five generations of people who was slaves and sharecroppers—but ain’t nobody in my family never let nobody pay ‘em no money that was a way of telling us we wasn’t fit to walk the earth. We ain’t never been that poor. We ain’t never been that—dead inside.† Walter finally showed pride in his family and let go of his dream for the good of his family. The play shows how a family had to overcome and learn life’s lessons the hard way. Through Walter, the play showed that sometimes dreams have to be let go and through Mama itshowed that sometimes dreams have to be held on to. Through Beneatha, it was shown that things aren’t always how they seem. The family was able to overcome a major obstacle once they united.

The Negative Portrayal of Mothers in Disney Films :: Movies

The Negative Portrayal of Mothers in Disney Films Why is it that in Disney created films, the motherly figures and role models are completely diminished whereas the fatherly roles are extravagant? Why does mainly a woman play the role of the vilan? If you notice, you will find that in just about every classic Disney film, the mother is portrayed in a horrible and questionable fashion. But, there is always a fatherly or male figure that everyone boasts about. First, let us start with the films where the main character fails to have a mother mentioned or seen at all: The classic movie of Aladdin; neither Aladdin nor Princess Jasmine had a motherly figure. But, Aladdin did have the Genie, who was male, and Jasmine had her father, who was also male. Beauty and the Beast is another Disney film where there is a male figure and yet again, the loss of a female role model. Belle is raised by only her father, and there is no word about where her mother is or what happened to her. Another favorite of the Disney Classic films is that of The Little Mermaid. In this film, Ariel is raised by her extremely dominant father, and all of her friends are male. So, whatever did happen to her mother, and did she ever know her? Pinnocchio is another great film, yet he gains a new father but never a new mother. He is raised by Gepeto, the craftsman, and is then adopted by Gepeto.

How To Get Better At Basketball :: essays research papers

Hey all you amateur basketball players out there. Read this to find out how to improve your game! Tip 1: To be a great basketball player, you first must know your strengths and weaknesses. Big tall people don't need to shoot threes and short people shouldn't be in the middle struggling to get rebounds. Very physically able players should use that to there advantage to jump higher, run faster, and play better than their opponents. Not very strong or fast players should use fakes and their brains to score points. Tip 2: Team mates hate ball hogs, especially ball hogs who don't have any skills. Team mates respect passers who can penetrate and pass. Tip 3: If you're on a fast break and there aren't any defenders, then you don't need the whole team running down the floor, duh. Some people should stay back on defense. Move 1: The Drop Step This is a move to help you get to the basket. While your powering off the dribble and about to take a lay-up, instead of the two steps, you can land of your two feet at the same time, pump fake, and then get in the air again and shoot the ball. This helps your self from tripping over legs because you can easily jump over them. Move 2: The Jumper While your putting the moves on the defender but you're not getting anywhere, bounce the ball "behind" your back, not "around" your back (there is a difference), then jump backwards, catch the ball in your hands and shoot it. This move shakes off your defender for enough time to give you space for a good shot. Move 3: The Spinning Crossover Start with dribbling the ball with either hand, then cross over to the other hand but while its still in the other hand, spin around that way to bring it back to your right. For example, let's say you start with your right hand, once you take the ball to your left hand the defender might move to the left thinking you will go that way. Instead the bring the ball back around to the right again giving you enough space to burn past your defender and "take him to school.

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Describe the three different parenting styles and discuss how they might impact on children’s behaviour. Use the module materials to illustrate your answer. Task 1 Question 1 Point 1: It is not only parenting styles that can impact on a child’s behaviour, other factors such changes in a child’s life can also affect behaviour Task 1 Question 2 Evidence for point 1: †¢Colloby et al. (2012, ch 2) With the focal family in the son Thomas’s behaviour since being diagnosed with having a hearing impairment has had a significant effect on the family. †¢Colloby et al. 2012, ch 2) Thomas was introduced to a speech and language therapist. Task 1 Question 1 Point 2: Early learning stages of a child’s life can create an impact on children’s behaviour Task 1 Question 2 Evidence for point 2: †¢Colloby et al. (2012, p. 42) states Swiss biologist and psychologist Jean Piaget (1896-1980) â€Å"is renowned for his four-stage model of child develo pment that linked children’s behaviour to different stages of development† †¢Colloby et al. (2012, p. 42) shows a table of Piaget's first two stages of cognitive development and how these relate to key characteristics of children’s play †¢Colloby et al. (2012, p. 3) Russian psychologist, Vygotsky (1896-1934) argued that â€Å"Piaget had underestimated the role of language and social interaction in cognitive development and that children learn best in a social context with a ‘more knowledgeable other’ – someone who can support and encourage them in their learning† †¢Colloby et al. (2012, p. 43) states â€Å"Vygotsky believed that learning occurs when a child is supported by another person to do what they could not do alone. He called this the ‘zone of proximal development’†. †¢Colloby et al. (2012, p. 44) states â€Å"Feund (1990) conducted a study where young children were involved in placing fur niture in doll’s house. She concluded that playing alongside a ‘more knowledgeable other’ helped the child to achieve the next step in their own learning thereby achieving something they could not have done alone† Task 1 Question 1 Point 3: Transition in children’s lives can impact on their behaviour when a transition to daycare or school occurs. Task 1 Question 2 Evidence for point 3: †¢Colloby et al. (2012, p. 47) states â€Å"Childcare professionals play an important role in the lives of the twenty-first century family for a number of reasons† †¢Colloby et al. (2012, p. 7) states â€Å"it is much more common for both parents to go out to work, either full or part time, and so children may be accessing day-care settings for at least some of the time, before they go to school† Task 1 Question 1 Point 4: The involvement of professionals and having to build new relationships can impact on a child’s behaviour Task 1 Quest ion 2 Evidence for point 4: †¢Colloby et al. (2012, ch 2) the son Thomas has had to build new relationships and adapt to changes that he is not familiar and comfortable with. With the involvement of professionals Thomas was introduced to a speech and language therapist Task 1 Question 3The focus of this essay is to describe the three parenting styles and to discuss how they might impact on children’s behaviour. The three parenting styles are authoritarian parent, an authoritative parent and a permissive parent. I am also going to describe other factors that may impact on children’s behaviour, such as changes in a child’s life, the involvement of professionals in children’s lives, the early learning stages and also the transition children experience when having to detach from their primary carer to attend day-care or school. Authoritarian parents are considered as being disciplined, strict and controlling.Rules are set and they expect their child to f ollow them. They will not allow the child to make any choices or decisions of their own. They use a tough disciplined technique. The rules imposed are not open to negotiation with the child. They often will not explain the reasons why the rules are being imposed and also enforce their own punishment when a rule is broken. Similar, but different to, is the authoritative parent. They are also defined as strict but they have more of an understanding approach to their child when boundaries have been broken.The parent will set boundaries, rules and guidelines that are plausible rather than enforce unrealistic ones. They will explain to the child the reasons why they are being introduced, should they broken, they will also issue non-punitive punishments. The third style is a permissive parent. They recognise their child’s developmental and emotional needs but they have difficulty imposing rules and setting boundaries. This style teaches the child that rules do not have to be follow ed. They are also described as being soft and too easy going. Permissive parents become a friend rather than a parent and tend to ‘give in’ to their child very easily.A child’s behaviour can be both good and bad, so parenting styles can have a positive and a negative effect on a child. Majority of children’s behaviour problems take place during times of change and transition, this is a natural progression of development. Child psychiatrist and educator Rudolph Dreikurs (1897-1972), believed â€Å"that all humans, as social beings, want to belong and be accepted by others. He identified four goals for misbehaviour: attention, power, revenge and display of inadequacy† Colloby et al. (2012, p. 62). With the focal family in Colloby et al. 2012, ch 2) the assistance of Dreikurs four goals for misbehaviour gave Cara a better understanding of both her children. Cara was able to reflect on this information, and was able to take an impartial and objective lo ok at her children’s behaviour and address it. Initially the parenting style both Cara and Alastair were trying to establish with Thomas and Rowanna, had a disciplined approach, however, as they lived with Alastair’s mum Diane, she had a soft approach, and this did not help the situation as Diane would give in to their every needs, she adopted more of a permissive style.Children in this situation can get confused and frustrated not knowing which is right and which is wrong. Children require consistency as this can greatly impact on how they grow and develop. As well as the overall parenting style, family’s lives are affected by outside factors, such as changes in a child’s life can also affect behaviour. With the focal family in Colloby et al. (2012, ch 2) the son Thomas’s behaviour since being diagnosed with having a hearing impairment has had a significant effect on the family.Thomas has had to build new relationships and adapt to changes that he is not familiar and comfortable with. With the involvement of professionals Thomas was introduced to a speech and language therapist. In addition to the sessions they carry out together, Cara and Alastair play an important role carrying out further exercise and activity sessions at home. The home sessions became mundane and tedious, and Thomas was getting upset because he no longer wanted to do them.Early learning stages of a child’s life can create an impact on children’s behaviour as Swiss biologist and psychologist Jean Piaget (1896-1980) â€Å"is renowned for his four-stage model of child development that linked children’s behaviour to different stages of development† Colloby et al. (2012, p. 42). Russian psychologist, Vygotsky (1896-1934) â€Å"believed that learning occurs when a child is supported by another person to do what they could not do alone. He called this the ‘zone of proximal development’†. Colloby et al. (2012, p. 4 3).Whilst I agree with Piaget’s first two stages of cognitive development, the sensori-motor stage, whereby infant’s 0-2years will practice play and be allowed to explore and experience things for themselves, and the pre-operational stage, 2-7years, when a child’s play will replicate their own experiences, and they will see things from their own perspective using their own imagination, I also agree with Vygotsky’s beliefs that children can copy a person and learn from them. Some children can be further developed than others and so a child more conversant in play can assist with another child’s development.Transition in children’s lives can impact on their behaviour when a transition to daycare or school occurs. In Society today it is much more common for both parents to go out to work, Colloby et al. (2012, p47) and so the need for childcare facilities increases. Childcare professionals play an important role in the lives of the twenty-first century family for a number of reasons, Colloby et al. (2012, p. 47). An example of this could be a child possibly needing to attend day-care before they attend school so parent(s) are able to continue with their careers.By accessing the day-care placement, a child would be allocated a key person. The role of the key person is for the child to develop a bond with them so that they will make them feel safe and secure. The choice of parenting style is crucial to a child’s psychological and social development. Baumrind suggested that the majority of parents display one of three different parenting styles, Colloby et al. (2012, p. 70). The chosen style should provide a loving, supporting and disciplined approach to build a healthy and happy child.A parent’s behaviour towards a child can potentially impact significantly on his or her wellbeing. The style is generally based on how they were reared themselves, or, it can be as a result of this that they choose another. It ca n also be chosen as a result of the society in which they live, their ethnicity or their cultural groups. Word Count 1,079 References Colloby, J. , Collins, J. , Conradie, L. , McKeogh, S. and Shelton, I. (2012) Understanding children and young people, Milton Keynes, The Open University.

Case 8-13 Mohamed Salem El-Hadad, Internal Auditor

Case 8-13 Mohamed Salem El-Hadad, Internal Auditor 1. Identify and briefly describe the legal protections that â€Å"whistleblowers† have in the United States. Sarbanes-Oxley Act Section 806: Whistleblower Protection â€Å"SEC. 806. PROTECTION FOR EMPLOYEES OF PUBLICLY TRADED COMPANIES WHO PROVIDE EVIDENCE OF FRAUD. † â€Å"Sec. 1514A.Civil action to protect against retaliation in fraud cases (a) WHISTLEBLOWER PROTECTION FOR EMPLOYEES OF PUBLICLY TRADED COMPANIES- No company with a class of securities registered under section 12 of the Securities Exchange Act of 1934 (15 U. S. C. 78l), or that is required to file reports under section 15(d) of the Securities Exchange Act of 1934 (15 U. S. C. 8o(d)), or any officer, employee, contractor, subcontractor, or agent of such company, may discharge, demote, suspend, threaten, harass, or in any other manner discriminate against an employee in the terms and conditions of employment because of any lawful act done by the employeeà ¢â‚¬â€ (1) to provide information, cause information to be provided, or otherwise assist in an investigation regarding any conduct which the employee reasonably believes constitutes a violation of section 1341, 1343, 1344, or 1348, any rule or regulation of the Securities and Exchange Commission, or any provision of Federal law relating to fraud against shareholders, when the information or assistance is provided to or the investigation is conducted by– (A) a Federal regulatory or law enforcement agency; (B) any Member of Congress or any committee of Congress; or (C) a person with supervisory authority over the employee (or such other person working for the employer who has the authority to investigate, discover, or terminate misconduct) (sox-online. com/act). As stated above employees are protected against any retaliation from employers concerning their job position. 2. Should U. S. companies integrate legal protections for internal whistleblowers into their internal contro l systems? Defend your answer. I think that U. S companies should integrate legal protections for internal whistleblowers into their internal control systems. Doing so will give employees the confidence to expose fraudulent and illegal activity. Otherwise an individual will not step forward with information regarding illegal matters because of the penalties they will have to pay. Some employers have the power to prevent individuals from obtaining jobs in the same field by giving bad references. 3.Suppose that during your career you discover a fraud similar to that uncovered by Mohamed Salem El-Hadad. List specific measure that you could take to protect yourself from recriminations by your employer or other parties. A few steps one could take to protect themselves from recriminations by their employer or other parties are: Document any suspicions, take pictures, record phone conversations. Keep records of all items that might cause problems in the future. 4. Did El-Hadad face an ethi cal or moral dilemma when he discovered the fraud being perpetrated by his superior and friend? Before responding, define ethical dilemma and moral dilemma.An ethical dilemma is a circumstance that a person faces concerning a decision about proper behavior. It usually involves a situation in which the wellbeing of one or more other individuals is affected by the outcome of the decision. A moral dilemma is a situation that an individual faces involving a decision about whether an act is ethical. El-Hadad faced an ethical dilemma when he discovered the fraud being committed by his superior and friend. Cites http://www. sox-online. com/act_section_806. html Knapp, M. C. (2013). Madoff Securities. In M. C. Knapp, Contemporary AuditingReal Issues And Cases Mason: South-Western. Whittington, R. (2012). Principles of Auditing & Other Assurance Services. New York: McGraw- Hill/Irwin.