scholarly journals Pemodelan Klaster Frekuensi Suara Bising Mesin Pesawat Menggunakan Metode Extended Kalman Filter

2021 ◽  
Vol 7 (2) ◽  
pp. 282
Author(s):  
Neilcy Tjahjamooniarsih ◽  
Leonardus Sandy Ade Putra

Kebisingan adalah bunyi yang tidak diinginkan dari usaha atau kegiatan dalam tingkat dan waktu tertentu yang dapat menimbulkan gangguan kesehatan manusia dan kenyamanan lingkungan. Salah satunya kebisingan pada wilayah bandara yang terpancar dari gelombang suara mesin pesawat udara dan dapat mengganggu lingkungan. Menurut World Health Organization (WHO) suara bising sekeras 85 dB hanya dapat didengar secara terus menerus maksimal selama 8 jam per-hari. Setiap peningkatan suara bising sebesar 3 dB maka suara bising bertambah dua kali lipat. Suara bising dapat menjadi salah satu penyebab gangguan pendengaran (Noise Induced Hearing Loss). Penelitian ini menyajikan perencanaan mekanisme identifikasi sistem yang mencakup perencanaan skema identifikasi, pembentukan pasangan data identifikasi, dan penurunan algoritme identifikasi. Metode Extended Kalman Filter digunakan dalam mekanisme identifikasi untuk menemukan model hubungan antara komponen dominan pembentuk suara bising dengan suara bising secara keseluruhan yang kemudian dilakukan validasi terhadap model tersebut. Pengujian terhadap model dilakukan menggunakan sinyal-sinyal hasil pengukuran yang tidak diikutsertakan selama proses identifikasi. Hasil dari penelitian ini diperoleh bahwa frekuensi noise saat pesawat tinggal landas berkisar antara 50 Hz – 7000 Hz dengan model matematis spreaded continuous frequency.

2016 ◽  
Vol 1 (2) ◽  
pp. 198
Author(s):  
Firda Baihaq ◽  
Marji Marji ◽  
Erianto Fanani

Abstract: The noise level from grinding activities in Welding Laboratory State University of Malang is 98 dB exceeds the Threshold Limit Value (TLV) is 85 dB. Students are not always use provided ear protective equipment which can cause occupational diseases such as Noise Induced Hearing Loss. According to the World Health Organization, counseling is one of health promotion technique to prevent disease and provide health information. The variables which measured are knowledge, attitude, and practice in using Ear Protective Equipment. This research use one group pretest posttest method design with 17 students at Welding Laboratory State University of Malang. Counseling was held by presentation and handout materials which followed with lecture and discussion. Data analys with Wilcoxon Signed Ranks Test, showed that: the value of Z -3.644 and Asymp. Sig. (2-tailed) of 0.000 at knowledge variable, the value of Z -3.368 and Asymp. Sig. (2-tailde) 0.001 on attitude variable, and the value of Z -3873 and Asymp. Sig. (2-tailed) 0.001 on practice variable is smaller than 0.05. The conclusion of hypothesis is that there is any effect of counseling to student knowledge, attitude, and practice in using Ear Protective Equipment from grinding noise hazard at Welding Laboratory State University of Malang.Keywords: counseling, knowledge, attitude, practice, ear protective equipmentAbstrak: Kebisingan yang ditimbulkan dari kegiatan menggerinda di Ruang Pengelasan Universitas Negeri Malang adalah 98 dB melebihi Nilai Ambang Batas (NAB) yaitu 85 dB. Mahasiswa saat menggerinda tidak selalu menggunakan Alat Pelindung Telinga sehingga dapat menyebabkan penyakit akibat kerja berupa Noise Induced Hearing Loss. Menurut World Health Organization, penyuluhan merupakan salah satu cara promosi kesehatan untuk mencegah penyakit dan bertujuan memberikan informasi kesehatan. Variabel yang diukur dalam penelitian ini yaitu pengetahuan, sikap, dan tindakan mahasiswa terkait penggunaan Alat Pelindung Telinga. Metode penelitian ini menggunakan desain penelitian one group pretest posttest terhadap 17 mahasiswa di Ruang Pengelasan Universitas Negeri Malang. Penyuluhan dilakukan dengan media presentasi dan handout materi serta metode ceramah dan tanya jawab. Analisis data menggunakan Wilcoxon Signed Ranks Test menunjukkan hasil: nilai Z -3,644 dan Asymp. Sig. (2-tailed) 0,000 pada variabel pengetahuan, nilai Z -3,368 dan Asymp. Sig. (2-tailed) 0,001 pada variabel sikap, serta nilai Z -3873 dan Asymp. Sig. (2-tailed) 0,001 pada variabel tindakan mahasiswa berarti lebih kecil daripada 0,05. Kesimpulan dari pengujian hipotesis tersebut adalah terdapat pengaruh penyuluhan terhadap pengetahuan, sikap, dan tindakan mahasiswa terkait penggunaan Alat Pelindung Telinga dari bahaya kebisingan saat menggerinda di Ruang Pengelasan Universitas Negeri Malang.Kata kunci: penyuluhan, pengetahuan, sikap, tindakan, alat pelindung telinga


2018 ◽  
Vol 24 (3) ◽  
pp. 184
Author(s):  
Vipra Mangla ◽  
Suneela Garg ◽  
Charu Kohli ◽  
MMeghachandra Singh ◽  
Shelly Chadha ◽  
...  

2021 ◽  
Vol 10 (1) ◽  
pp. 191-195
Author(s):  
Adi Wiratama Manaku ◽  
Dila Nadya Andini

     ABSTRACT According to the World Health Organization (WHO), around 5% of the world's population - about 466 million people - is diagnosed with what they call 'crippling hearing loss'. Although these statistics are divided into several levels of the inability of hearing, partial or total (hearing loss or the deaf), the percentage of the whole is characterized by hearing loss more than 40dB for adults and more than 30dB for children. The reduction of the capacity hearing does require a certain way to experience the environment. With the approach design principles "DeafSpace", which is based on the knowledge of the built environment, largely constructed for the people who bothered pendengaranya, presenting a variety of challenges addressed by the Deaf in a certain way to change their environment to fit with its environment.  


Author(s):  
J Rudd ◽  
R Bohara ◽  
R Youngs ◽  
R W J Mcleod ◽  
H A Elhassan ◽  
...  

Abstract Objective Globally, South Asia has the highest proportion of disabling hearing loss. There is a paucity of data exploring the associated hearing loss and disability caused by chronic middle-ear disease in South Asia in the setting of surgical outreach. This study aimed to measure disability using the World Health Organization Disability Assessment Schedule 2.0 in patients undergoing ear surgery for chronic middle-ear disease in an ear hospital in Nepal. Method The World Health Organization Disability Assessment Schedule 2.0 was translated into Nepali and administered by interview to patients before ear surgery, and results were correlated with pre-operative audiograms. Results Out of a total of 106 patients with a mean age of 23 years, the mean World Health Organization Disability Assessment Schedule 2.0 score was 17.7, and the highest domain scores were for domain 6 ‘participation in society’ at a score of 34. There was a positive correlation of World Health Organization Disability Assessment Schedule 2 score with hearing level (r = 0.46). Conclusion Patients with ear disease in Nepal have had their disability measured using the World Health Organization Disability Assessment Schedule 2.0. Our study demonstrated a correlation between impaired hearing and disability in a surgical outreach context, which was an expected but not previously reported finding.


Author(s):  
Linda M Luxon

Hearing loss is the most common sensory impairment. The World Health Organization has estimated that at least 275 million people are affected worldwide, as are 17% of the adult population in the United Kingdom, three-quarters of these being over 60 years of age. Clinical examination and investigation—examination includes visual inspection of the anatomy of the external ear and tympanic membrane, and tuning-fork tests to distinguish conductive from sensorineural hearing loss in some cases. Audiological investigations (1) quantify audiometric thresholds at each frequency; (2) differentiate conductive from sensorineural defects; (3) differentiate ...


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