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Journal of Mathematical and Fundamental Sciences
Published by Institut Teknologi Bandung
ISSN : 23375760     EISSN : 23385510     DOI : https://doi.org/10.5614/j.math.fund.sci.
Core Subject : Science, Education,
Astronomy Chemistry Earth & Planetary Sciences Mathematics Physics
Journal of Mathematical and Fundamental Sciences welcomes full research articles in the area of Mathematics and Natural Sciences from the following subject areas: Astronomy, Chemistry, Earth Sciences (Geodesy, Geology, Geophysics, Oceanography, Meteorology), Life Sciences (Agriculture, Biochemistry, Biology, Health, Medical, Pharmacy), Mathematics, Physics, and Statistics.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 3 No. 1 (1964)" : 5 Documents clear
Beberapa Pikiran Mengenai Perkembangan Televisi di Indonesia Iskandar Alisjahbana; Baidillah Mardjuni
Journal of Mathematical and Fundamental Sciences Vol. 3 No. 1 (1964)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Ichtisar. Televisi, selain vital untuk bangsa2 NEFO guna memperkuat persatuan dan memperkembangkan kepribadiannja, djuga merupakan suatu keharusan jang mutlak untuk menghadapi tantangan2 jang disebabkan oleh kemadjuan2 teknik, chusus dalam bidang telekomunikasi. Dengan kemadjuan2 jang ditjapai dalam Space radio2 communication, jaitu hubungan radio melalui satelit buatan jang diorbitkan diangkasa luar, dalam waktu jang tidak terlalu lama, dapat diramalkan bahwa tiap penduduk dibumi ini, tidak hanja dapat menerima siaran2 radio, tetapi djuga dapat mengikuti siaran2 televisi dari tiap negara diseluruh dunia. Untuk menghadapi tantangan ini, Indonesia tidak dapat tergantung hanja dari djaringan2 telekomunikasi jang dibangun melulu dengan alat2 buatan luar negeri. Tulisan ini menjarankan suatu djaringan alternatip jang sederhana dan murah, dimana potensi industri dalam negeri jang ada, sudah dapat diikut sertakan. Djaringan alternatip ini berdasarkan suatu projek-teladan stasiun relay televise digunung Tangkubanprahu untuk penerimaan dikota Bandung, jang merupakan hasil karja Panitia Transmisi Televisi Eksperimentil. Sedikit perhitungan jang merupakan dasar dari projek-teladan di Tangkubanprahu ini, diuraikan sekadarnja. Abstract. Television is vital to the New Emerging Forces nations, and is also a means of strengthening their unity and developing their integrity. Television is also important to a nation facing the challenge of  modern technical development, particularly  in the field of telecommunication. With the advances achieved in Space-Radio Communication, that is radio communication through manmade satellites orbited into outer space, it can be predicted that in the near future, people on earth will not only be able to receive radio broadcasts, but also to watch programs from every country in the world. To face this challenge, Indonesia, in setting up her telecommunication network, must not depend on foreign made instruments. This paper suggests an alternative and less expensive telecommunication network in which potential domestic industries are able to participate. This alternative network is based on a pilot project television relay station on Mount Tangkubanperahu for reception in the Bandung area. This pilot project is the work of the Committee on Television Experimentation. A few basic computation on which the Tangkubanperahu pilot project is based are demonstrated. The proposed television network, are taking advantages of high mountains which are a feature of Indonesian landscape; unfortunately a complete survey has not yet been made. The use of high mountains, however, has logistic consequences, and further study of this aspect is necessary.
New H-ALPHA Emission Stars in A Region to the East of the T-Association Near Rho Ophiuci Pik Sin The; Ham Keng Lim
Journal of Mathematical and Fundamental Sciences Vol. 3 No. 1 (1964)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

The result of a survey of H-alpha emission objects in an area of approximately 25 square degrees centered on the star CD -24°12765 (R.A.=16h38.m5; Dec.=-24°22';1950), is presented. Only 33% of H-alpha emission stars discovered by Dolidze and Arakelyan (1959) which are located in  the present survey region, are redetected in our plates. A total number of 32 new H-alpha emission objects are found. Their position and finding charts are given.
Soybean-Extract and Cane Molasses for Active Dried Yeast Production Ko Swan Djien; Oei Ping Jauw
Journal of Mathematical and Fundamental Sciences Vol. 3 No. 1 (1964)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Abstract. Extract of germinating soybeans was used as enrichment in a medium of blackstrap cane molasses for producing active dried yeast. Optimum amount of soybeans and optimum germination time has been investigated. Yeast cells produced from a medium prepared from molasses, (NH4)2 SO4 and KH2PO4.Ichtisar. Ekstrak dari kedele berkatjambah telah dipakai untuk memperkaja perbenihan jang dibuat dari tetes untuk pembuatan ragi roti kering. Djumlah kedele dan waktu perketjambahan jang terbaik telah ditentukan. Ragi jang dibuat dari perbenikan tersebut mempunjai daja tahan lebih besar terhadap pengeringan daripada ragi jang dibuat dari perbenihan jang mengandung tetes, (NH4)2SG4 dan KH2PO4.
Beberapa Tjatatan Mengenai Roket K. Purbosiswojo
Journal of Mathematical and Fundamental Sciences Vol. 3 No. 1 (1964)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Ichtisar. Dalam karangan ini didjelaskan beberapa persamaan untuk roket ideal. Dalam roket ideal ini termasuk roket jang pengurangan bahan bakarnja tiap waktu adalah konstan dan roket jang gaja dorongnja konstan dalam segala keadaan tekanan udarannja statis dan ketinggian roket dari permukaan air laut. Abstract. In this paper some equations for idealized rockets are discussed. This type of rockets include those which rate of mass-change is constant and those which thrust is constant in any kind of condition of static pressure and altitude.
Beberapa Kriteria Pembebanan Optimum Ekonomi Alat-alat Pembangkitan Termis Mak Sioe Tho
Journal of Mathematical and Fundamental Sciences Vol. 3 No. 1 (1964)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Ichtisar. Metoda pembebanan dan perentjanaan daripada alat2 pembangkitan tenaga listrik jang bekerdja setjara parallel dan untuk optimum ekonomi telah diperkembangkan setjara memuaskan. Dalam artikel ini dibahas keriteria2 sederhana untuk merentjanakan setjara optimum ekonomi sistim-sistim jang ketjil, padamana beberapa generator bekerdja setjara parallel, dan kehilangan2 transmisi dapat diabaikan.Abstract. The method of loading and scheduling of parallel operating power plants for optimum economy has been fairly well developed. For small system where several generators are operating in  parallel and transmission losses can be neglected, simple criterions for economic scheduling and its limitation are discussed in this paper.

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