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Implementasi Algoritma Genetika untuk Optimalisasi Random Forest dalam Proses Klasifikasi Penerimaan Tenaga Kerja Baru : Studi Kasus PT.XYZ Laras Binarwati; Imam Mukhlash; Soetrisno Soetrisno
Jurnal Sains dan Seni ITS Vol 6, No 2 (2017)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.42 KB) | DOI: 10.12962/j23373520.v6i2.26887

Abstract

Kualitas sumber daya manusia sangat penting bagi suatu perusahaan untuk mempertahankan keunggulan kompetitifnya agar mampu bersaing dengan perusahaan lainnya maupun untuk meningkatan kualitas dari perusahaan itu sendiri. Oleh karena itu, menggali pola penerimaan tenaga kerja baru sangat diperlukan. Pada penelitian ini, metode random forest digunakan untuk menggali pola penerimaan tenaga kerja  baru. Adapun  algoritma genetika (GA) digunakan untuk mengoptimalkan akurasi berdasarkan pola yang didapat. Hasil pengujian program ini menunjukkan keakuratan pola yang dihasilkan oleh random forest yang dioptimalkan dengan algoritma genetika lebih tinggi dengan hasil keakuratan berkisar antara 91%-95% dibanding dengan hanya menggunakan random forest saja yang hanya berkisar 40-95%.
A Genetic Algorithm with Best Combination Operator for the Traveling Salesman Problem Muhammad Luthfi Shahab; Titin J. Ambarwati; Soetrisno Soetrisno; Mohammad Isa Irawan
(IJCSAM) International Journal of Computing Science and Applied Mathematics Vol 5, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.627 KB) | DOI: 10.12962/j24775401.v5i2.5830

Abstract

In this research, we propose a genetic algorithm with best combination operator (BC(x,y)O) for the traveling salesman problem. The idea of best combination operator is to find the best combination of some disjoint sub-solutions (also the reverse of sub-solutions) from some known solutions. We use BC(2,1)O together with a genetic algorithm. The proposed genetic algorithm uses the swap mutation operator and elitism replacement with filtration for faster computational time. We compare the performances of GA (genetic algorithm without BC(2,1)O), IABC(2,1)O (iterative approach of BC(2,1)O), and GABC(2,1)O (genetic algorithm with BC(2,1)O). We have tested GA, IABC(2,1)O, and GABC(2,1)O three times and pick the best solution on 50 problems from TSPLIB. From those 50 problems, the average of the accuracy from GA, IABC(2,1)O, and GABC(2,1)O are 65.12%, 94.21%, and 99.82% respectively.
SIMULATOR EKSEKUSI INSTRUKSI PADA SISTEM KOMPUTER VIRTUAL Soetrisno, Soetrisno
Jurnal Mnemonic Vol 2 No 1 (2019): Mnemonic Vol. 2 No. 1
Publisher : Teknik Informatika, Institut Teknologi Nasional malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.186 KB) | DOI: 10.36040/mnemonic.v2i1.43

Abstract

Sistem komputer modern saat ini semakin canggih dan mudah digunakan karena kompleksitas perangkat keras, dan piranti lunak, semakin tersembunyi dari pengguna. Sehingga, untuk memahami bagaimana sebuah komputer melakukan eksekusi instruksi yang dilakukan oleh mikroprosesor tidak secara mudah dilakukan. Salah satu solusinya adalah dalam bentuk piranti lunak simulator, atau emulator, suatu mikroprosesor tertentu. Penulis merancang dan membuat piranti lunak sistem komputer virtual, terdiri dari mikroprosesor virtual, dan memori virtual. Mikroprosesor virtual dirancang dan dibuat mulai dari rancangan instruction set, dengan format ukuran instruksi yang seragam 32 bits, menyediakan 16 register berukuran 32 bits. Memori virtual yang dibuat pada simulator sebesar 32 kilo bytes. Sistem komputer yang dibuat memungkinkan lebih dari satu program berada di memori, dan mikroprosesor dapat menjalankan program-program yang ada di memori tersebut, meskipun masih dieksekusi secara sekuensial. Satu program dikerjakan hingga selesai, dilanjutkan program berikutnya. Dalam simulator ini, program dapat ditulis menggunakan bahasa mesin berdasarkan rancangan instruction set yang ada, atau program ditulis berupa pseudocode yang akan dikompilasi oleh piranti lunak compiler yang telah dibuat. Menggunakan compiler ini dapat diperlihatkan hasil translasi dari pseudocode ke kode dalam bahasa assembly, juga dalam bahasa mesin, dan serta status register, maupun memori, dari tiap instruksi yang dieksekusi.
Correlation between circulating fibrosis biomarkers with left atrial function and left atrial volume index in rheumatic mitral stenosis Asrial, An A.; Reviono, Reviono; Soetrisno, Soetrisno; Setianto, Budi Y.; Widyaningsih, Vitri; Nurwati, Ida; Wasita, Brian; Pudjiastuti, Anggit
Narra J Vol. 4 No. 1 (2024): April 2024
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v4i1.293

Abstract

Mitral stenosis is the most common rheumatic heart disease (RHD) disorder worldwide, including in Indonesia. This pathological condition causes left atrial pressure, leading to left atrial fibrosis that affects the structure and function of the left atrial as well as the clinical condition. The aim of this study was to assess the correlation between circulating fibrosis biomarkers with net atrioventricular compliance (Cn) as a parameter of left atrial function, and left atrial volume index (LAVI) as a parameter left atrium structure of changes. A cross-sectional study was conducted at Panti Rahayu Hospital and Permata Bunda Hospital, Purwodadi, Central Java, with a total of 40 RHD patients with severe mitral stenosis. The ELISA was used to measure the levels of carboxy-terminal propeptide of type I procollagen (PICP), matrix metalloproteinase I (MMP-1), tissue inhibitor matrix metalloproteinase 1 (TIMP-1), and transforming growth factor-β1 (TGF-β1). The left atrial function was assessed by measuring Cn, and the LAVI parameters were measured to assess left atrium structure/size. The mean levels of circulating fibrosis biomarkers were as follows: PICP 153.96±89.12 ng/mL; MMP-1 1.44±2.12 ng/mL; MMP-1/TIMP-1 ratio 0.38±0.54 and TGF-β1 2.66±1.96 pg/mL. From the echocardiographic evaluation, the mean Cn was 5.24±1.93 mL/mmHg and the mean LAVI was 152.55±79.36 mL/m2. There were significant correlation between MMP-1 and MMP-1/TIMP-1 ratio with Cn (r=0.345 and r=0.333, respectively; both had p<0.05). PICP and TGF-β1 biomarkers did not significantly correlate with Cn (p>0.05). Meanwhile, none of the biomarkers had a significant correlation with LAVI (p>0.05). This study highlights that MMP-1 and MMP-1/TIMP-1 ratio are potentially to be used as markers to determine the Cn in RHD patients with severe mitral stenosis. However, further studies with a higher sample size are needed to confirm this finding.
Aerobic exercise improves spatial memory in a rat model of meningitis Zaidah, Lailatuz; Soetrisno, Soetrisno; Purwanto, Bambang; Kristiyanto, Agus; Wasita, Brian; Widyaningsih, Vitri
Narra J Vol. 4 No. 3 (2024): December 2024
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v4i3.977

Abstract

Infections of the nervous system, such as acute bacterial meningitis, pose serious health problems that require immediate intervention. In experimental animals, exposure to lipopolysaccharide (LPS) is used to induce meningitis. Aside from drug intervention to reduce inflammation in meningitis, aerobic exercise helps to maintain the regulatory mechanisms of brain homeostasis through anti-inflammatory mechanisms. The aim of this study was to evaluate the effect of aerobic exercise on malondialdehyde (MDA), nuclear factor-kappa B (NF-κB), insulin-like growth factor 1 (IGF-1), endothelial nitric oxide synthase (eNOS), brain-derived neurotrophic factor (BDNF), apoptosis, and spatial memory. A four-week experimental study was conducted using 18 rats, which were randomly divided into three different groups (six rats per group): healthy rats as negative controls (non-meningitis), a treatment group treated with antibiotic treatment (meningitis group), and a third group (aerobic exercise group) treated with antibiotics and aerobic exercise following LPS-induced meningitis. Data were analyzed using a one-way analysis of variance (ANOVA) test, and the comparison between groups used the Bonferroni post-hoc test. The results showed that aerobic exercise significantly reduced MDA (p<0.001), NF-κB (p=0.035), and apoptosis (p=0.020) while increasing the serum levels of IGF-1 (p<0.001), eNOS (p=0.011), and BDNF (p=0.001) levels. Improvement in spatial memory was significant in the aerobic exercise group (p<0.001). This study suggested that aerobic exercise could be a promising adjunct therapy in meningitis management strategies, particularly due to its effect on improving spatial memory. Further clinical trials are needed to confirm these findings for clinical use.
Impacts of Phyllanthus niruri extract on biomarker levels, macrophage count, and lesion area in an endometriotic rat model Wulandari, Eka T.; Soetrisno, Soetrisno; Purwanto, Bambang; Reviono, Reviono; Wasita, Brian; Laqif, Abdurrahman
Narra J Vol. 4 No. 3 (2024): December 2024
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v4i3.1002

Abstract

Endometriosis is a gynecological disorder characterized by chronic inflammation, anatomical changes, prolonged pain, and infertility. On the other hand, Phyllanthus niruri is recognized for its pharmacological effects, which might be beneficial in managing endometriosis. The aim of the study was to investigate the pharmacological effects of P. niruri as a potential therapy for endometriosis by using an animal model. An experimental laboratory study with randomized, controlled trial, pre-test, and post-test design using 40 female Wistar rats (Rattus norvegicus) was conducted at the Integrated Research and Testing Laboratory (LPPT) of Universitas Gadjah Mada, Yogyakarta, Indonesia, from February to June 2023. Endometriosis was induced in female Wistar rats by suturing a 0.5 cm2 flap from the uterine horn to the peritoneal cavity. Changes in serum interleukin 1β (IL-1β), malondialdehyde (MDA), and matrix metalloproteinase 9 (MMP-9), before and after the treatment, were analyzed using enzyme-linked immunosorbent assay. Hematoxylin and eosin (HE) staining were used to evaluate lesion size and macrophage quantity. The results suggested that the P. niruri extract with a dose of 196 mg/200 g body weight (BW) could significantly attenuate serum IL-1β (p=0.004), MMP-9 (p=0.021), and MDA (p=0.021). Rats receiving the P. niruri extract (196 mg/200 g BW) had significantly higher macrophage counts (p=0.003), but similar lesion area (p=0.093) as compared with the negative control. In conclusion, P. niruri demonstrated promising therapeutical effects on endometriosis by modulating IL-1β, MDA, and MMP-9 levels, although the effect was not pronounced on macrophage counts and lesion area.
EFFECT OF COGNITIVE BEHAVIORAL THERAPY FOR SEROTONIN LEVEL, DEPRESSION SCORE AND QUALITY OF LIFE IN CERVICAL CANCER PATIENTS Soetrisno, Soetrisno; Sulistyowati, Sri; Respati, Supriyadi Hari; Nasrudin, Muhamad
Folia Medica Indonesiana Vol. 52 No. 3 (2016): JULY - SEPTEMBER 2016
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (48.668 KB) | DOI: 10.20473/fmi.v52i3.5457

Abstract

Cervical cancer is the most common cause of death among gynaecological neoplasms. Management of advanced cervical cancer currently has not been able to improve the prognosis. Standard intervention therapy, chemotherapy and radiotherapy, as well as the emerging pain could lead to psychological stress till depression, thus reduce patients' quality of life. CBT for psychological stress and depression is expected to improve the fruitfulness of standard therapy. Serotonin is a neurotransmitter which plays a role in the patophysiology of depression. The aim of this study is to analyze the effect of cognitive behavioral therapy on serotonin level, depression score and quality of life in advanced cervical cancer patient with experimental quasi pre and post test design methods. The samples are 15 subjects in both intervention and control groups. Intervention group was given CBT and standard therapy, while control group was given standard therapy only. Study was held in Department of Obstetric and Gynecologic Dr. Moewardi Hospital Surakarta and Prodia Laboratory, in January to March 2015. Independent variable was advanced cervical cancer patients underwent CBT intervention and dependent variables were serotonin level, depression score and quality of life score. The result, serotonin level and quality of life scores were higher after intervention compared with control, (219.43±33,42 vs 89.57±23.23) and (85.13±14.62 vs 41.86±7.24), respectively. Depression score was lower after intervention than without CBT intervention (11.20±4.94 vs 17.00±4.86) and statistically significant (p < 0.05). So, there were effects of cognitive behavioural therapy on serotonin level, depression score and quality of life score in cervical cancer patients and were statistically significant.
THE IMPACTS OF STIMULATION IN PROTRACTED LABOR TO CORTISOL LEVELS AND INCIDENCE OF POST-PARTUM BLUES Soetrisno, Soetrisno; Respati, Supriyadi Hari; Sulistyowati, Sri; Kurniawan, Hendro
Folia Medica Indonesiana Vol. 53 No. 1 (2017): JANUARY - MARCH 2017
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.722 KB) | DOI: 10.20473/fmi.v53i1.5483

Abstract

Delivery, induction, stimulation, cesarean section with the aid of a vacuum extraction, for example, can reduce maternal confidence on the smooth delivery process, as well as improve postpartum stress. These stressors stimulate the HPA axis (hypothalamus-pituitary-adrenal), so that the adrenal cortex produces more cortisol hormone, it can increase postpartum blues. The objective of this study was to analyze the effect of delivery stimulation on protracted labor on cortisol levels and the occurrence of postpartum baby blues. This was an experimental study of non-randomized post-test control group. The subject of the study 30 patients in labor taken consecutive sampling, divided into 2 groups (normal delivery and stimulation) each group consist of 15 patients. In stimulation delivery group, it is examined of cortisol serum levels after five days and then continued for postpartum blues occurrence measurement. Statistical analysis using t-test for differences in levels of cortisol and chi square for analyzing the effect on the occurrence of post-partum blues (a=0.05). Mean  level of cortisol in delivery stimulation group is 40.29 ± 5.58, in normal delivery is 33.59 ± 11.17, with p=0.047, meaning there are significant differences both study groups. Stimulation delivery increases the occurrence of post-partum blues 5.50 times compared to normal delivery (OR=5.50 and p=0.028). Mean cortisol levels on post-partum blues higher at 42.90 ± 6.97 compared to no post-partum blues 30.14 ± 6.66, p=0:00, which means there are significant differences both groups. In conclusion, there was significant relationship between stimulation in protrated labor that increases cortisol serum level and post partum blues incidence.
THE EFFECT OF RECOMBINANT VASCULAR ENDOTHELIAL GROWTH FACTOR 121 ON NITRIDE OXIDE LEVEL IN MICE (Mus musculus) MODEL OF PREECLAMPSIA Soetrisno, Soetrisno; Isharyadi, Isharyadi; Sulistyowati, Sri
Folia Medica Indonesiana Vol. 53 No. 3 (2017): September 2017
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (57.216 KB) | DOI: 10.20473/fmi.v53i3.6446

Abstract

Preeclampsia is a multifactorial syndrome in pregnancy whose cause is still unknown. Several proangiogenic and antiangiogenic mediators such as Vascular Endothelial Growth Factor (VEGF) and Nitrite Oxide (NO) play important roles in preventing preeclampsia. VEGF can increase NO level that lowers maternal blood pressure, improves endothelial function and reduces placental hypoxia in preeclampsia. Recombinant VEGF 121 is expected to be an option in the prevention and treatment of preeclampsia. This experimental study used mice (Mus musculus) as the model. The objective of this study was to observe the effect of recombinant VEGF 121 in increasing the level of nitric oxide in mice (Mus musculus) model of preeclampsia. This was an experimental analytical study with Randomized Control Trial (RCT) design. The study enrolled 27 pregnant mice (Mus musculus) which met the restriction criteria divided into 3 groups. The first group (K1) were 9 normal pregnant mice. The second group (K2) were 9 pregnant mice of preeclampsia model without treatment. The third group (K3) were 9 pregnant mice of preeclampsia model receiving recombinant VEGF 121 therapy. The independent variable was the administration of recombinant VEGF 121 and the dependent variable was the serum NO level. Statistical analysis was performed by using anova statistics. NO level in the first group (K1) was 1.746±0.347, with minimum value of 1.00 µM, and maximum value of 2.28 µM, CI (1.479-2.013).  NO level in second group (K2) was 1.167±0.380, with minimum value of 0.64 µM, and maximum value of 1.94 µM, CI (0.875-1.460). NO level in the third group (K3) was 2.164±0.556, with minimum value of 1.56 µM, and maximum value of 5.96 µM, CI (1.842-2.486). With anova statistical test, there were significant differences between K1 group and K2 group (p value=0.004<0.05), K1 group and K3 group (p value=0.000<0.05) as well as K2 group and K3 group (p value=0.029<0.05). In conclusion, Recombinant VEGF 121 increased the level of nitric oxide in mice (Mus musculus) model of preeclampsia significantly.
Evaluating autologous peritoneum grafting for enhanced healing of bile duct injuries: A preliminary data from an animal study Nugroho, Anung N.; Mudigdo, Ambar; Soetrisno, Soetrisno; Yarso, Kristanto Y.; Nurwati, Ida; Indarto, Dono; Pamungkasari, Eti P.
Narra J Vol. 5 No. 1 (2025): April 2025
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v5i1.1873

Abstract

Increased incidence of laparoscopic cholecystectomy-related bile duct injuries (BDIs), combined with its risk of serious complications and mortality, highlights the need for a more effective repair technique. Although the use of autologous graft in BDI repair has been promoted, the role of autologous parietal peritoneum remains underexplored. The aim of this study was to evaluate the effect of autologous parietal peritoneum grafts in rabbit models of partial BDI, emphasizing its effect on the expression of cluster of differentiation 68 (CD68) and transforming growth factor-β (TGF-β). An experimental post-test-only design was employed, using 27 male New Zealand rabbits (Oryctolagus cuniculus) aged 8–10 months. The rabbits were allocated into three groups: control (primary closure), autologous parietal peritoneum graft, and autologous gallbladder graft. Partial BDI measuring 15×5 mm were surgically created and repaired according to group assignments. The expression of CD68 and TGF-β were measured via enzyme-linked immunosorbent assay (ELISA), while the anastomosis was pathologically examined through hematoxylin and eosin (H&E) staining on days 3, 7, and 14 post-surgery. Statistical analysis was performed using analysis of variance (ANOVA) followed by Bonferroni post hoc tests. No statistically significant difference was observed in the expression of CD68 or TGF-β among the three treatment groups on days 3, 7, and 14 post-surgery, indicating that the effects of autologous parietal peritoneum graft were comparable to the control and the autologous gallbladder graft in promoting wound healing. Fibroblast density on day 3 was significantly lower in the parietal peritoneum group (p=0.040), reflecting delayed recruitment, but normalized by day 14, indicating successful integration and remodeling. The study highlights the potential role of autologous parietal peritoneum grafts for BDI.