Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

p-Index From 2020 - 2025

P-Index

This Author published in this journals

All Journal PERFORMA : Media Ilmiah Teknik Industri

Wakhid Ahmad Jauhari

Program Studi Teknik Industri, Universitas Sebelas Maret, Surakarta

Author-ID : 3769786

Engineering Industrial & Manufacturing Engineering

Published : 5 Documents Claim Missing Document

Claim Missing Document

Articles

Model Joint Economic Lot Size (JELS) pada Kasus Pemanufaktur-Pembeli dengan Permintaan Probabilistik dan Lead Time Variabel Wakhid Ahmad Jauhari
Performa: Media Ilmiah Teknik Industri Vol 7, No 1 (2008): PERFORMA Vol. 7, No. 1 Maret 2008
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

We consider a two-layer supply chain model consisting of a vendor and a buyer. The buyer observes a probabilistic demand and orders lots from the vendor. We relax the assumption of deterministic lead time and assume that it is varying linearly with the delivery lot size. The vendor manufactures the requested product in production batchs. Each produced batch is shipped to the buyer in lots. We consider a situation where there are multiple deliveries for one order and the vendor produces in a multiple integer of delivery quantity and hence, an order can be split into a number of production runs. A solution procedure is suggested for solving the proposed model and numerical examples are used to illustrate the benefit of integration. Numerical results show that the integrated inventory model will always result in savings in the total joint cost, buyer cost and vendor cost.

Analisis Sistem Antrian di Plasa Telkom Solo dengan Metode Simulasi Eko Liquiddanu; Wakhid Ahmad Jauhari; Yaning Tri Hapsari
Performa: Media Ilmiah Teknik Industri Vol 8, No 1 (2009): PERFORMA Vol. 8, No. 1 Maret 2009
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

Plasa Telkom Solo is a service place belonging to Telkom which is provided to serve Telkom customer with nine service servers. Those nine services servers can handle new setting and mutation, complains, information, and cash payment and non cash payment. Queue in the scale of customer service is important to be considered because the long queue will make the customer uncomfortable. The queue happens because the need of service is bigger than the capacity of service. Therefore, the customer cannot be served immediately because the busy service. This research is conducted to analyze the queue system to find the best number of the server and service system in Plasa Telkom Solo. This research uses simulation method to find the best solution for the company to decide the number of the servers. Thesimulation model is used because this model can give solution if analytic model is failed to do that. Analytic model cannot be used in this research since in Plasa Telkom Solo there are four kinds of service with different approximate time service.Based on the research, the best numbers of server is seven. Meanwhile, the service system model are combining service 1 (new setting and mutation) and service 2 (complain) with the number of server 5 and service 3 (information) combines with service 4 (cash payment and non cash payment) with number of server is 2. This model can reduce the queue time for 21,7325 minutes (before the simulation) to be 17,8694 minutes (after simulation). The time difference is 3.8631 minutes with utilization 0,8996 (89,96%) or 458,796 minutes (7,65 hours) per day and the free time for the server is 0,1004 (10,04%) atau 51,2040 minutes (0,85 hours) per day, in which per day there is 8,5 work time.

Model Persediaan Just In Time (JIT) Terintegrasi dengan Mengakomodasi Kebijakan Material Wakhid Ahmad Jauhari
Performa: Media Ilmiah Teknik Industri Vol 7, No 2 (2008): PERFORMA Vol. 7, No. 2 September 2008
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

In this paper we developed a single buyer-single manufacturer-single supplier inventory model where there are multiple deliveries for one buyer’s order and the manufacturer produces in a multiple integer of deliveries quantity. We consider a lot size of raw material procurement which can be split from production batch. From numerical example we found that a value of material conversion factor and delivery frequency influences the total inventory cost. A high value of material conversion factor would make the buyer’s total inventory cost increase and the manufacturer’s total inventory costdecrease. High frequency of delivery would make the buyer’s total inventory cost decrease and the manufacture’s total inventory cost increase.

Penentuan Frekuensi Perjalanan Angkutan Umum Batik Solo Trans untuk Mengoptimalkan Jumlah Pendapatan Ayu Sally Damayanti; Yusuf Priyandari; Wakhid Ahmad Jauhari
Performa: Media Ilmiah Teknik Industri Vol 11, No 2 (2012): PERFORMA Vol. 11, No 2 September 2012
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

This research utilizes the rearrangement on trip frequency of Batik Solo Trans as the solution for increasing their daily revenue. The first phase of the trip rearrangement is identifying peak hours of Batik Solo Trans and analyzing data distribution of passengers’ quantity. Next, Monte Carlo simulation is applied for evoking the passenger quantity data as the basis on trip frequency calculation. There are three types of trip frequency which are calculated, minimum, maximum and service frequency. The service frequency is a threshold between revenue and operational cost. At the last phase, sensitivity analysis is applied on service frequency calculation. This research shows that a suggested frequency (service frequency) could be applied when tariff for a passengers and passenger quantity are remaining unchanged. Besides, if Batik Solo Trans still use the old trip frequency, it’s suggested that Batik Solo Trans considers rising the tariff.

Penentuan Faktor-Faktor Bahaya yang Dihadapi Perawat di RSUD Kabupaten Karanganyar dan Usulan Pencegahannya Menggunakan Metode AHP Irwan Iftadi; Wakhid Ahmad Jauhari; Agarika Fatmasari
Performa: Media Ilmiah Teknik Industri Vol 10, No 1 (2011): PERFORMA Vol. 10, No 1 Maret 2011
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

From the calculation of weighting the results of biological hazard 0.23 0.22 followed by a chemical hazard and environmental and mechanical biomechanical hazard 0.22, 0.17 and hazard pshycal 0.17 pshychological hazard. While the determination of the value of performance, the lowest hazard of pshychological hazard to the value 3.991 4.113 followed by a biological hazard, chemical hazard 4.309, environmental and mechanical / biomechanical hazard and the highest 4.396 4.578 pshycal hazard. Proposed hazard prevention based on the lowest of pshychological hazard with hazard specification, among others, due to the many patients, patients who want immediate demands are met, the threat from the patient and the supervisor, invective from the patient and the supervisor, shift changing, the staff were not adequate and heavy workloads. From the results of questionnaires and interviews with the nurse, the things that need to be considered is the quantity of hospital nurses, nurses and quality of work on the hospital system.

Co-Authors Agarika Fatmasari Ayu Sally Damayanti Eko Liquiddanu Irwan Iftadi Yaning Tri Hapsari Yusuf Priyandari

Title

Found 5 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 5 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 5 Documents
Search