Wednesday, July 27, 2011

Revamping the Welfare State: Obama and the Class Challenge of American Politics

Westenley Alcenat

Abstract : At every stage of major historical events in America in the last century, Du Bois’s thesis has been validated. The New Deal, for example, failed to radicalize the politics of race and create a more inclusive union. Instead, what initially seemed to be a class struggle took on the racialized perception of being more socially beneficial to white Americans than to others. Furthermore, the notoriety of the Civil Rights movement, in terms of the conflicts it posed between government and civil demands, and between the professed ideals of the Constitution and the legal practice of racial segregation, substantiates Du Bois’s claim. President Lyndon Johnson’s Great Society also emerged with a racial premise, except this time whites viewed its social policies as benefiting African Americans. More importantly, the cultural and racial backlash spurred by the Civil Rights movement and the Great Society extended well into the 1960s and 1970s, further highlighting the significance of the color-line. Yet, what if we reconsider the Du Boisian analysis in a different light? This essay will part ways with his racial analysis to argue that the sociopolitical lives of Americans are also dominated by a national consciousness of individualism. As a result, many Americans disregard issues relating to the class problems of the country. Consequently, focusing on issues of class inequalities is easily confused with socialism. Therefore, while race and class mutually reinforce each other, the political and social perceptions in which they are framed view class as unimportant. The Tea Party movement, while not representative of the larger public, is symptomatic of this point. Reframing Du Bois’s warning, this essay argues that in the 21st century (as in the 20th century), U.S. politics lacks a class consciousness. It accentuates the schism between traditional American individualism and an emerging need to redress acute class issues.

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Hydrogen Absorption In Weldments Of Overlaid Claded Pressure Vessel

Ronnie Higuchi Rusli

Abstract: Cracks was found in type 347 stainless steel internal attachment welds of a reactor for a high temperature, and high pressure hydrogen service. One of the possible causes of cracking is low cycle fatigue cracking induced by repetition of thermal stress to embrittled weld metal. Type 347 weld metal loses its ductility by presence of sigma phase and hydrogen.
keywords: desulfurization, hydrogen embrittlement, hydrocracking, martensitic, weldment

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6-Month Results of Transdiscal Biacuplasty on Patients with Discogenic Low Back Pain: Preliminary Findings

Haktan Karaman, Adnan Tufek, Gonul Olmez Kavak, Sedat Kaya, Zeynep Baysal Yildirim, Ersin Uysal, Feyzi Celik
Abstract: Chronic discogenic pain is one of the leading causes of low back pain; however, the condition is not helped by most non-invasive methods. The results of major surgical operations for these patients are unsatisfactory. Recently, attention has shifted to disk heating methods for treatment. TransDiscal Biacuplasty is one of the minimally invasive treatment methods. The method was developed as an alternative to spinal surgical practices and Intradiscal Electrothermal Therapy for treatment of patients with chronic discogenic pain.
Methods: The candidates for this study were patients with chronic discogenic pain that did not respond to conservative treatment. The main criteria for inclusion were: the existence of axial low back pain present for 6 months; disc degeneration or internal disc disruption at a minimum of one level, and maximum of two levels, in MR imaging; and positive discography. Physical function was assessed using the Oswestry Disability Index when measuring the pain with VAS. Patient satisfaction was evaluated using a 4-grade scale. Follow-ups were made 1, 3, and 6 months after treatment.
Results: 15 patients were treated at one or two levels. The mean patient age was 43.1±9.2 years. We found the mean symptom duration to be 40.5±45.7 months. At the sixth month, 57.1% of patients reported a 50% or more reduction in pain, while 78.6% of patients reported a reduction of at least two points in their VAS values. In the final check, 78.6% of patients reported a 10-point improvement in their Oswestry Disability scores compared to the initial values. No complications were observed in any of the patients.
Conclusions: TransDiscal Biacuplasty is an effective and safe method.
Keywords : discogenic pain, low back pain, transdiscal biacuplasty, intradiscal electrothermal therapy, cool radiofrequency

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Isolation of Methyl Laurate from Coconut Oil as Raw Material for Fatty Alcohol Sulfate (FAS)

Rita Arbianti, Tania Surya Utami, Astri N

Abstract: Isolation of Methyl Laurate from Coconut Oil as Raw Material for Fatty Alcohol Sulfate. Methyl laurate is a raw or base material for many industries, including surfactant industries. In this research, coconut oil (VCO) is transesterified with methanol to produce methyl ester, using NaOH as the catalyst. Methyl laurate is then separated by method based on the difference in melting point. This research focuses at determining the effects of some variables in transesterification on the concentration of produced methyl laurate. The variables are temperature (40 oC, 50 oC, 60 oC, 80 oC), time of transesterification reaction (0,5 hour, 1 hour, 1,5 hours, 2 hours, 3 hours), and the percent weight of the catalyst NaOH (0,5 %, 1 %, 1,5 %, 2 %, 3 %). Research showed the concentration of methyl laurate increased, following the increased temperature, time, and percent weight of catalysts. Optimal conditions were acquired at reaction temperature of 60oC, reaction time of 2 hours, and percent weight of the catalyst NaOH of 2 %. Laurate acid conversion
to methyl laurate that yielded from optimal conditions, after the separation based on melting point, was 55,61 %.
keywords: methyl laurate, coconut oil, fatty alcohol sulfate, transesterification

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Sintesa Material Bioaktif Hydroxyapatite (HA) dengan Metode Flame Spray Pyrolysis

Nurtono, Tantular

Abstract: Hydroxy apatite (HA) particles for biomaterial for implantation of bone tissues need homogen size and high crystallinity. Submicrometer, spherical, and monodispersed HA particles have been synthesized successfully by aerosol prosess in a flame reactor. A flame burner consisted of three concentric cylindrical pipes, each for starting material solution, LPG as fuel, and air as oxidizer. Ca(NO3)2.4H2O-(NH4)2HPO4 solution was selected as starting material. Temperature distribution and particle size evolution were predicted using computational fluid dynamics (CFD). The morphology and the crystallinity of the generated particles were analyzed using scanning electron microscope (SEM) and X-R Diffraction (XRD), respectively. The generated particles were highly affected by fuel flow rate, carrier gas flow rate and heat treatment after flame process. Their crystallinities increased with increasing the fuel flow rate and increased significantly by heat treatment of 800C for 2 hours after flame process.

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Model Pembelajaran Proses Penyeimbang Dinamik Dan Pembuatan Prototipe Mesin Penyeimbang Dinamik Roda Mobil Berbasis Komputer

Winarto, Suhardjono

Abstract: The fast growth of the mobile transportation in Indonesia, especially automobile which in year 2008 increase up to more than 600.000 unit and motorcycle go up to more than 6 million unit, accelerate the supporting technology mainly for its maintenance and repair. The technology of dynamic balancing also must be developed to increase the local content and the domestic market share in industry. For this purpose, it is important to do a experimentally research to learn and to understand the principle of the dynamic balancing process, not only theoretical but also practically experimental. Because of that this research split of by two themes, there are a developing learning model and a prototype of wheel balancing machine for its application. Developing a learning model is used to trace experimentally the fundamental principle of the dynamic balancing process both with phase method and four run method for a single rotating disc according to a miniature of car wheel. The result shows that the four run method has a high balance performance up to 92%, but it needs more time to measure four times the vibration amplitude, after the trial weight on the disc is applied. On the contrary, the phase method can be done fast and easy, however the balance performance is even lower. The reason is that the phase angle depends also on the rotating speed to determine the location of its balance mass. The prototype of the wheel balancing machine uses a swing arm technology, which is developed in the machine tool and vibration laboratory, while the old technology with a sliding mechanism give a vibration signal not a pure sinusoidal, therefore it is difficult to determine the position of the balance mass to be added. This research investigates many tire size with its rim diameter of 12 in., 13 in., 14 in. and 15 in. with three variation of rotating speed of 457 rpm, 510 rpm and 661 rpm for the accommodated balancing process below the natural frequency, on the natural frequency zone and the above natural frequency. The result of the measuring of characteristic of the wheel balancing machine prototype is decreasing amplitude from the initial unbalanced condition to the balance condition or defined as a balance performance of 89.84% for wheel with 13 in. rim, which is performed by rotating speed on the natural frequency zone. By using rotating speed below the natural frequency, the balance performance of 73.9% and 75% is reached by the wheel with 12 in. rim and 14 in. diameter respectively. For the wheel with 15 in. rim diameter gives a balance performance of 89.23%, which is done by the number of rotating above the natural frequency. The balancing process below the natural frequency comes about a phase shift of 180� and the above natural frequency give a phase shift of approximately of 90

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The Power Of Facebook In Advertising Product

Juwita, Oktalia

Abstract: Social media has its uniqueness in supporting marketing system which is the availability of clear defined system, along with the updated news feed to identify behavior of the target market. One of the most used social media site to support marketing system due to its comprehensiveness and highest growth of user is Facebook. Advertising in Facebook went booming since the launching of Facebook Marketplace Application for Classified Listing in May 2007. A lot of big and small scale companies start creating Facebook Page and manage it seriously. In particular, since Facebook launched Facebook Ads in November 2007, which feature was complimented with real time reporting. This application attracted more and more companies to allocate budget particularly to advertise their businesses via Facebook. Advertising in Facebook has the potential of continuous growth, both with simple model or Facebook Ads. Local SME (Small-Medium Enterprises =UKM) could also utilize Facebook to market their products. This research was conducted based on survey using Advertising Balance Scorecard (ABSC) method to measure effectiveness of advertisement. Perspectives being measured were objective perspective, creativity and execution perspective, media perspective. Respondent taken as target sample were SME entrepreneurs in fashion industry who have been using Facebook as their marketing media. Appraisal scale used to measure advertisement effectiveness was Likert scale range from 1 to 5. The effectiveness of advertising from the perspectives of ABSC was declared effective by the value obtained to determine the position of the Likert scale of 4, 20. Calculation results from each perspective were 4, 31 for objective perspective 4, 23 for creativity and execution perspective, and 4, 05 for media perspective. Objective perspective became the most dominant compare to other perspectives. As for reliability of Facebook as media to advertise product, it could be concluded based on 4, 28 score from the conducted analysis that Facebook was very reliable.

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