scholarly journals ANALISIS KOEFISIEN ABSORPSI DARI MATERIAL BERBAHAN DASAR LIMBAH KAIN PERCA DAN PELEPAH PISANG

2020 ◽  
Vol 6 (2) ◽  
pp. 141-148
Author(s):  
Patricia P. Noviandri ◽  
Centaury Harjani ◽  
Adindra M. K. Astuti

Title: Coefficient Absorpsi Analysis from Patchwork Material and Banana Midrib Preliminary research related composite waste material and nature has done. This research continues the previous research with a more accurate testing method using impedance tubes. Material samples made in this study are samples that have a greater NR (Noise Reduction) value in previous studies. Material samples were made as many as 4 samples with different substance variables, namely fine composite samples, rough composites, banana midrib, and combinations (fine composites and banana midrib). Three samples were mold using a tube with a diameter of 30 mm and a height of 70 mm while one sample combination was a material that was combined to reach a height of 50 mm. From the test results, the addition of cavity affects the absorption coefficient value, therefore the use of this material in buildings must use an air cavity so that the absorption coefficient value increases. Samples that have character as sound absorbing material are fine composite materials, banana fronds, and combination materials because they have an absorption coefficient value (?) of more than 0.30. The combination material has the highest NRC value among the other samples that is equal to 0.57.

Author(s):  
Safrida Riana Candra

The purpose  of this study  was to determine  the prevailing  wage  in the home industry porridge  “MILAH”,    to determine  the productivity  of the employees  home industry porridge “MILAH”,    as well  as to determine  whether  or not the effect  of wages  on employee  productivity  at home industry  porridge "MILAH"  in Ponorogo.  The samples  in this  study  using  a sample  that  is saturated  all the  employees   home  industry  porridge “MILAH”, amounting  to 22 people.  Data collection  using documentation   and interview. In analyzing  the data used  for regression   testing  method  examines  the  hypothesis  proposed  in  this  study. The  results  showed  that  wages  have  relationships   and  a positive influence on employee  productivity  at home industry porridge  “MILAH”   in Ponorogo.  It is obtained  from the correlation  test showed  the value rhitung 0.867 whereas  rtable 0.423, on the other  hand  Sig(hit) is 0.000  while  the magnitude   Sig(prob) 0.05. This  means  that the value of rhitung >= rtable (0.867 >= 0.423) or Sig(hit) <= Sig(prob) (0.000 <= 0.05) meaning  a rejection  of H0 which shows  that wages  have a relationship  with  employee  productivity   at borne  industry  porridge  “MILAH”   in Ponorogo.  Further  test results  were also obtained  Fisher, Fhitung value is 60.542 while the value Ftable 4,351, on the other hand is Sig(hit) 0.000 while the magnitude   Sig(prob) 0.05. This  means  that the value  of Fhitung >= Ftable (60.542>= 4.351) or Sig(hit) Sig(prob) (0.000 d" 0.05) meaning  a rejection  of H0 which  indicates  that there are significant wage on employee productivity  at home industry porridge “MILAH”  in Ponorogo. Also  obtained  results  of the t test, thitung is 7,781 while ttable of 2,086, on the other hand Sig(hit) value  is 0.000  while  Sig(prob)  0.05.  this   means  that the value  of thitung > ttable (7.781 > 2.086)  or  Sighit< Sigprob  (0.000  < 0.05)  meaning  a rejection  of H, which  shows  that there are different  effects on the productivity   of the employee  wages at home industry  porridge "MILAH"   in Ponorogo.  Results  R2 of 0.752  indicates  that 75.20/0 of the variable  productivityof employeesaffectedbywagelabor,whiletheremaining24.8%isinfluencedby


2013 ◽  
Vol 10 (2) ◽  
pp. 39
Author(s):  
Chayongkan Parnornmast ◽  
Kittisak Jermsittiparsert ◽  
Thanaporn Sriyakul

The objective of this study focuses on empirically analysing the discourse on the correlations between exchange rate and exports, which has been reproduced constantly and extensively in Thai society by authorities from academic circles and public and private sectors. Hence, this study analyses the time series data of exchange rate and exports by means of advanced statistical methodologies, the regression analysis and Johansen's cointegration test. The regression analysis finds that the exchange rate is negatively correlated to the exports, but Johansen's cointegration test results contrariwise that there is no cointegrating relationship in-between. Therefore, such a claim is not an error made in good faith but another example of domineering discourses enabling the elites to take advantages by disguising them as knowledge and truths, over which the other members in the society dare not to doubt nor dispute.


2003 ◽  
Vol 9 (2) ◽  
pp. 83-87 ◽  
Author(s):  
Vytautas J. Stauskis

Earlier formulas used for calculating the echoing length in a hall did not make allowance for the location of sound-absorbing materials and the shape of the hall. Fitzroy in 1959 and Neubauer in 1999 tried to take these factors into account. The echoing length calculations were made in a 1018 m3 hall where sound-absorbing materials were placed on the floor and the lateral walls. Formulas produced by 6 authors were used for calculations. As the echoing length is calculated by Fitzroy's and Neubauer's formulas, with the sound-absorbing materials of different acoustical properties placed on various planes of the hall, large differences in values are obtained compared with the calculations based on Eyring's formula. When a half of the floor area is covered with a sound-absorbing material, the increase of its absorption ratio results in the increase of the difference in echoing lengths calculated by Fitzroys' and Neubauer's formulas. When only the lateral walls are covered with sound-absorbing material, the increase of their absorption coefficient from 0,1 to 0,6 results in a 3 s (or three-fold) increase in the echoing length difference when calculated by Fitzroy's formula and in a 2 s (or two-fold) increase when calculated by Eyring's formula. Calculation by other formulas gives an insignificant difference of ∼ 0,5 s. As Fitzroy's and Neubauer's formulas are used, the difference becomes more significant: the larger the average hall absorption coefficient, the larger the difference.


2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Sara Offenberg

Two manuscripts produced in early fourteenth-century German lands reflect similar iconography of the fighting with Sword and Buckler; one is the well-known fencing manual, Leeds, Royal Armouries, MS I. 33, produced ca. 1320, and the other is a Hebrew manuscript of the Bible, Paris, Bibliothèque nationale de France héb. 9, made in 1304, that will be the focus of this article. This preliminary research intends to demonstrate how Hebrew illuminated manuscripts can shed more light on the study of fight books iconography.


2018 ◽  
Vol 2018 ◽  
pp. 1-16
Author(s):  
Y. L. Xue ◽  
D. G. Tang ◽  
Z. Z. Li ◽  
L. Z. Shao ◽  
Z. Liao ◽  
...  

Multilayered combination of protective structures is an important means of effectively weakening the explosive shockwave. On this basis, a “rigid-flexible-rigid” three-layer sealed structure was proposed in this paper and two models for the sealed structure were designed. Meanwhile, internal explosion tests of the two models were conducted. One model used foam concrete as the energy absorbing material and the other used dense sand. The comparisons between the test results and the computed results obtained from the formulae were made, and the test results agreed well with the computed results. Test results showed that both models had favorable energy-dissipating capacity, and the model that used foam concrete as the energy absorbing material had a superior energy-dissipating capacity.


2019 ◽  
Vol 26 (4) ◽  
pp. 197-208
Author(s):  
Leo Gu Li ◽  
Albert Kwok Hung Kwan

Previous research studies have indicated that using fibres to improve crack resistance and applying expansive agent (EA) to compensate shrinkage are both effective methods to mitigate shrinkage cracking of concrete, and the additions of both fibres and EA can enhance the other performance attributes of concrete. In this study, an EA was added to fibre reinforced concrete (FRC) to produce concrete mixes with various water/binder (W/B) ratios, steel fibre (SF) contents and EA contents for testing of their workability and compressive properties. The test results showed that adding EA would slightly increase the superplasticiser (SP) demand and decrease the compressive strength, Young’s modulus and Poisson’s ratio, but significantly improve the toughness and specific toughness of the steel FRC produced. Such improvement in toughness may be attributed to the pre-stress of the concrete matrix and the confinement effect of the SFs due to the expansion of the concrete and the restraint of the SFs against such expansion.


2006 ◽  
Vol 56 (1) ◽  
pp. 1-43
Author(s):  
Sándor Richter

The order and modalities of cross-member state redistribution as well as the net financial position of the member states are one of the most widely discussed aspects of European integration. The paper addresses selected issues in the current debate on the EU budget for the period 2007 to 2013 and introduces four scenarios. The first is identical to the European Commission's proposal; the second is based on reducing the budget to 1% of the EU's GNI, as proposed by the six net-payer countries, while maintaining the expenditure structure of the Commission's proposal. The next two scenarios represent radical reforms: one of them also features a '1% EU GNI'; however, the expenditures for providing 'EU-wide value-added' are left unchanged and it is envisaged that the requisite cuts will be made in the expenditures earmarked for cohesion. The other reform scenario is different from the former one in that the cohesion-related expenditures are left unchanged and the expenditures for providing 'EU-wide value-added' are reduced. After the comparison of the various scenarios, the allocation of transfers to the new member states in terms of the conditions prevailing in the different scenarios is analysed.


2016 ◽  
Vol 13 (2) ◽  
pp. 67
Author(s):  
Engku Liyana Zafirah Engku Mohd Suhaimi ◽  
Jamil Salleh ◽  
Suzaini Abd Ghani ◽  
Mohamad Faizul Yahya ◽  
Mohd Rozi Ahmad

An investigation on the properties of Tenun Pahang fabric performances using alternative yarns was conducted. The studies were made in order to evaluate whether the Tenun Pahang fabric could be produced economically and at the same time maintain the fabric quality. Traditional Tenun Pahang fabric uses silk for both warp and weft. For this project, two alternative yarns were used which were bamboo and modal, which were a little lower in cost compared to silk. These yarns were woven with two variations, one with the yarns as weft only while maintaining the silk warp and the other with both warp and weft using the alternative yarns. Four (4) physical testings and three (3) mechanical testings conducted on the fabric samples. The fabric samples were evaluated including weight, thickness, thread density, crease recovery angle, stiffness and drapability. The results show that modal/silk and bamboo silk fabrics are comparable in terms of stiffness and drapability, hence they have the potential to replace 100% silk Tenun Pahang.


2006 ◽  
Vol 51 (2) ◽  
pp. 52-78 ◽  
Author(s):  
Corina Caduff ◽  
Sabina Gebhardt Fink ◽  
Florian Keller ◽  
Steffen Schmidt

Intermedialität wird hier systematisch an Musik, Literatur, visuelle Kunst und Film dargestellt. Den Anfang machen allgemeine Überlegungen zu Materialität und Medium in diesen verschiedenen Künsten. Im Weiteren werden unter dem Aspekt ›Bimedialität‹ verschiedene Beispiele vorgestellt, die jeweils aus zwei Medien bestehen (z.B. Musikfilm, das Lied oder Schriftbilder). Dabei folgen wir der Frage, ob und wie jeweils eines der beiden Medien eine Vorrangstellung bekommt. Der abschließende Teil behandelt „intermediale Bezüge in Monomedialität“. Hier geht es um monomediale Darstellungen, denen aber eine Beschäftigung mit einem anderen Medium vorangegangen ist. Das ist etwa dann der Fall, wenn ein Schriftsteller über ein Bild schreibt, ohne daß dieses (im Text) zu sehen ist. In this article, we offer a systematic description of intermedia relations across music, literature, the visual arts, and film. Beginning with some general reflections on materiality and medium in these diverse fields of art, we then offer various examples consisting of two media (e.g. music film, song, images in writing). We pursue the question if, and how, one of the two media may take priority over the other. In our conclusion, we deal with „intermedia relations in monomediality“. This section focuses on artistic representations made in one medium, but based on reflections on another medium. For instance, this is the case when a novelist writes about a picture without having this picture reprinted in the text.


2020 ◽  
Vol 13 (2) ◽  
pp. 44-54
Author(s):  
Hendrico Firzandy Latupeirissa ◽  
Gierlang Bhakti Putra ◽  
Niki Prastomo

Brick debris that makes up the majority of construction waste has not received proper waste disposal in Indonesia. On the other hand, brick debris could be potentially reused as non-structural building materials to reduce its negative impact on the environment. This study aims to test the effectiveness of soundproofing on recycled brick debris. The soundproof test was carried out on brick debris in the form of fine and coarse grains. The simulation box is then used as a support for the brickwork material and then the box is exposed to a sound source with a certain level of noise that is considered disturbing human comfort. Noise level measurements are made in the outside and inside the box. These measurements are tabulated and then analyzed to see the success of the two aggregates in reducing noise. Basically, the brickwork material has succeeded in becoming a recycled building material that can absorb noise, although further research must be carried out to be able to state that this material is truly ready to be used as an alternative building material with good acoustic capabilities.


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