| Nama Pengarang | : | Balthasar Elu |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 183-194 |
| Abstraksi Narasi | : | In this knowledge society era, the existence healthcare service system at a hospital is not sterile of criitcs from the end users (customers) who naturally expect to get satisfaction in the service. Unfortunately, there are often gaps between provider's and customer's perception concerning the quality of service provided. Learning Organization (LO) is an alternative to sollve the gaps. |
| Nama Pengarang | : | J. E. Priyabna |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 153-159 |
| Abstraksi Narasi | : | Partition of objects relates to many problems. There are two main approaches in classifying objects, namely crisp partition and fuzzy partition. Crisp partition uses strict boundary among classes, whereas fuzzy partition allows vague boundary. There are many problems where fuzzy partition is more appropriate compared to the crisp one. Furthermore, fuzzy partition gives some advantages over crisp partition. There are two fuzzy based partition models, namely fuzzy c-means and fuzzy equivalence relation. This paper presents the needed theoretical background in order to classify objects based on fuzzy equivalence relation. |
| Nama Pengarang | : | R. Soemantri |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 123-129 |
| Abstraksi Narasi | : | The purpose of this paper is to introduce the exixtence of an analitic function defined on the upper half plane H of the complex plane C such that (z) = (M(z)) for every transformation M in a group of Moebius transformations. |
| Nama Pengarang | : | Yulia Widyaningrum dan Yosef Wijoyo |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 173-181 |
| Abstraksi Narasi | : | Paracetamol is widely-used as analgesic-antipyretic as well as a model substance in drug interaction study and in an antioxidant-effectivity test. This study was conducted to investigate the hepatoprotective effect of carrot and green apple juice combination against paracetamol. The carrot-green apple juice combination inhibition effect against paracetamol-induced hepatotoxicity was evaluated using Swiss male mice. The mice were gouped and given carrot - apple juice with several combinations and dose of 15 ml/kg BW, once a day for 5 successive days. Paracetamol-Hepatotoxicity was determined bassed on GPT-activity leve by spectrophotomatric method and injured liver-cell intensity by histopathology. The result shows that combinations of carrot and green apple juice with 1:2; 1:1, 1:½, and 1:¼ proportions effective inhibit paracetamol hepatotoxicity of 70.12%, 50.70%, and 23.46% respectively. |
| Nama Pengarang | : | Irawati |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 141-143 |
| Abstraksi Narasi | : | This paper shows how to develop naturally the concept of invertible ideal on an integral domain and gives an example of an integral domain which is not a principal ideal domain but each of its ideals is invertible. It turns out that the concept of Dedekind domain has to be introduce. |
| Nama Pengarang | : | Oyas Wahyunggoro |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 49-56 |
| Abstraksi Narasi | : | This research develops fuzzy logic software for speed control of loaded DC motor using IBM compatible computer. An ADC-DAC card with 0 to 9 volts range was provided to the ISA slot of the computer. The first step was to get output characteristics of the DC motor with 600, 1200, and 600 rpm input. The second step was to control the DC motor using PID controller based on the output characteristic with 600, 1200, and 600 rpm setpoint. The membership functions and rules of the fuzzy logic controller (FLC) were then established by trial and error, followed by computer programming. The performance of the PID controller. There were two inputs of the FLC, i.e. error and error rate, and one output rate. The actual output to control the speed of DC motor was the voltage signal from the integration of the output rate. The experiment result shows that the FLC using computer can work well and has better performance rhan the PID controller. |
| Nama Pengarang | : | Hesti Susilawati dan Ali Mustofa |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 37-47 |
| Abstraksi Narasi | : | This paper describes a system of speaker identification using neural network with learning constructive backpropagation. The system indentifies the real speaker based on the individual's utterance. The cepstral coefficients given by the invers Fourier transform of the logarithm of the signal power spectrum are first processed to obtain the desired features of speech signal. This identification experiment is conducted for 50 speakers speaking the Indonesian language. The experiment shows that the average of the identification error is 9.088 %. |
| Nama Pengarang | : | Sri Hartati Wijono |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 65-76 |
| Abstraksi Narasi | : | The success of education process in a higher learning institution is mainly determined by the learners, teachers, administration staff, as well as the managers in the insitution. This paper discusses human resource system supporting the human resource management. |
| Nama Pengarang | : | Mardi Santoso |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 11-16 |
| Abstraksi Narasi | : | Alkylation of 2-hydroxy-3-methoxybenzemethanol (9) with 1-bromo-1-chloro-propane afforded in 72% yield new benzemethanol (10) which under Finkelstein condition gave the corresponing iodo compound (11) in 84% yield. Reaction of indole with the alkylating agent (11) generated new cyclotriveratrylene precursor (12) in 84% yield. |
| Nama Pengarang | : | Bemardinus Sri Widodo |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 87-92 |
| Abstraksi Narasi | : | To install common Linux distro on Micrsoft Windows 98 we have to modify the harddrive partition. This modifications needs advanced knowledge and has a risk of loosing data. Many academic institutions have common computer laboratory that uses Windows applications and Linux system as well. Unlinux is a Linux distro whose files are stored on the FAT file system. Unlinux is easy to install and has no risk of loosing harddrive partition. |
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