scholarly journals ANALISIS KINERJA SISTEM ANTRIAN DALAM MENGOPTIMALKAN PELAYANAN PASIEN RAWAT JALAN DI RSUD HAJI MAKASSAR

2018 ◽  
Vol 14 (3) ◽  
pp. 228-238
Author(s):  
Maat Pono
Keyword(s):  
Single Channel ◽  
Multiple Channel ◽  
Query System

Tujuan dari penelitian ini untuk mengetahui kinerja sistem antrian yang saat ini digunakan oleh RSUD Haji Makassar. Berdasarkan hasil penelitian, model antrian yang saat ini diterapkan pada bagian registrasi pasien rawat jalan di RSUD Haji Makassar menunjukkan kinerja yang belum begitu baik pada loket pendaftaran, adapun model yang saat ini digunakan adalah sistem antrian model jalur tunggal atau Single Channel Query System (M/M/1). Berdasarkan hasil observasi dan perhitungan menggunakan rumus dari model (M/M/1) diketahui pasien lama membutuhkan waktu berada dalam antrian adalah selama 57,27 menit serta orang dalam antrian sebanyak 21 orang dan ini terjadi pada periode waktu 09.00-10.00 sampai 10.00-11.00. Untuk pasien baru membutuhkan waktu berada dalam antrian selama 50 menit dan jumlah orang dalam antrian sebanyak 5 orang dan ini terjadi pada periode waktu 09.00-10.00 sampai 11.00-12.00. Alternatif yang dapat menangani masalah pada loket pendaftaran adalah dengan merubah komposisi server dengan menggunakan Multiple Channel Query System (M/M/s) melalui model ini waktu yang dibutuhkan pasien lama didalam antrian menurun menjadi 0,8 menit, serta pasien lama dalam antrian yang awalnya 21 orang menjadi 1,24 orang, dengan alternatif ini kinerja sistem antrian dapat lebih optimal.

scholarly journals ANALISIS PERBANDINGAN SISTEM ANTRIAN MODEL M/M/1 DAN M/M/S UNTUK PELAYANAN PBB DI DPKAD KABUPATEN PURWAKARTA

2018 ◽  
Vol 3 (2) ◽  
pp. 19-30
Author(s):  
Edi Susanto ◽  
Fidianti SE
Keyword(s):  
Queue Length ◽  
Busy Period ◽  
Single Channel ◽  
Optimal Number ◽  
Queuing System ◽  
Average Amount ◽  
Channel System ◽  
Time Service ◽  
Multiple Channel ◽  
Query System

Research on the comparative analysis of single channel queuing system and multiple channel query system with 2 fasilties and 3 facilities. This study aims to investigate how the optimal number of facilities due to the large queues waiting for their turn receive services especially Pajak Bumi dan Bangunan in the Office of Dinas Pengelola Keuangan dan Aset Daerah Kabupaten Purwakarta.The analytical method used is the model M / M / 1 for single channel system query and M / M / S is used for multiple channel query system. based on the results of the analysis using the model found that the results of a query using a single channel system services Pajak Bumi dan Bangunan certainly not optimal due to the ability of the service itself 12 people per hour. On the other side using the model M / M / S found the average amount of time service during rush hour period 10:00 to 11:00 of 0:15 hours or can be 9 minute and an average queue length 1.0667. In contrast to the number 3 facility, the taxpayer at a busy period 10:00 to 11:00 can wait with a difference of only 0.0923 hours or 5:54 minutes and the number of queues waiting with an average of 0.1446.Suggestion research obtained in order to use the three facilities while maintaining the service with optimal. So that all service activities will not be interrupted and did not make the queue longer taxpayer.Keyword : Queue, single channel queuing system and multiple channel query system, services, tax payer

Effects of Expansion Algorithms on Speech Reception Thresholds

2008 ◽  
Vol 19 (02) ◽  
pp. 147-157 ◽  
Author(s):  
Christi L. Wise ◽  
Justin A. Zakis
Keyword(s):  
Hearing Aids ◽  
Single Channel ◽  
Multiple Channel ◽  
Low Level ◽  
Speech Reception ◽  
Average Spectrum ◽  
Channel Expansion ◽  
The Difference ◽  
Speech Reception Thresholds ◽  
The Impact

Expansion is commonly used to reduce microphone noise and low-level environmental noises that can be annoying to hearing aid users. It may also improve or reduce the perception of low-level speech. This study assessed the impact of two expansion algorithms, single and multiple channel, on speech reception thresholds (SRT) with 10 hearing impaired listeners wearing hearing aids with ADRO® processing. The single-channel algorithm suppressed sounds below 45 dB A, while the multiple-channel algorithm suppressed sounds below the long-term average spectrum of speech at either 55 or 45 dB SPL. The mean HINT SRTs in quiet were 39.4, 40.7, 40.6, and 41.8 dB A without expansion, with single-channel expansion, and with multiple-channel expansion at expansion thresholds of 45 and 55 dB SPL, respectively. The difference in mean SRT was only statistically significant between no expansion and multiple-channel expansion at a 55 dB SPL threshold. A regression analysis between the change in individual SRT for each expansion condition and pure tone average hearing loss showed no correlation. Our calculations indicate that only those with exceptionally good hearing will find microphone noise audible. The current practice of prescribing expansion algorithms based on hearing thresholds alone is questioned, and other rationales are discussed. La expansión se utiliza comúnmente para reducir el ruido de los micrófonos y los ruidos ambientales de bajo nivel que pueden ser perturbadores para los usuarios de auxiliares auditivos. También puede mejorar o reducir la percepción de lenguaje a bajo voumen. Este estudio evaluó el impacto de dos algoritmos de expansión, de canal múltiple y el canal único, sobre los umbrales de recepción del lenguaje (SRT) con 10 sujetos hipoacúsicos utilizando auxiliares auditivos con procesamiento ADRO®. El algoritmo de canal único suprimió sonidos por debajo de 45 dB A, mientras que el algoritmo de canal múltiple suprimió sonidos por debajo del espectro promedio a largo plazo del lenguaje, a 55 ó 45 dB SPL, respectivamente. La diferencia en el SRT medio fue sólo estadísticamente significativa entre la no expansión y la expansión de canal múltiple a un umbral de 55 dB SPL. Un análisis de regresión no mostró correlación entre el cambio en los SRT individuales para cada condición de expansión y la pérdida auditiva promedio para tonos puros. Nuestros cálculos indican que solamente aquellos con una audición excepcionalmente buena encontrarán audible el ruido del micrófono. Se cuestiona la práctica actual de prescribir algoritmos de expansión con base sólo en umbrales auditivos, y se discuten otros razonamientos.

scholarly journals Accurate Optic Disc and Cup Segmentation from Retinal Images Using a Multi-Feature Based Approach for Glaucoma Assessment

Symmetry ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1267 ◽  
Author(s):  
Yuan Gao ◽  
Xiaosheng Yu ◽  
Chengdong Wu ◽  
Wei Zhou ◽  
Xiaonan Wang ◽  
...  
Keyword(s):  
Optic Disc ◽  
Single Channel ◽  
Automatic Segmentation ◽  
Critical Role ◽  
Image Space ◽  
Image Clustering ◽  
Vessel Occlusion ◽  
Multiple Channel ◽  
Complex Anatomy ◽  
Contour Evolution

Accurate optic disc (OD) and optic cup (OC) segmentation play a critical role in automatic glaucoma diagnosis. In this paper, we present an automatic segmentation technique regarding the OD and the OC for glaucoma assessment. First, the robust adaptive approach for initializing the level set is designed to increase the performance of contour evolution. Afterwards, in order to handle the complex OD appearance affected by intensity inhomogeneity, pathological changes, and vessel occlusion, a novel model that integrates ample information of OD with the effective local intensity clustering (LIC) model together is presented. For the OC segmentation, to overcome the segmentation challenge as the OC’s complex anatomy location, a novel preprocessing method based on structure prior information between the OD and the OC is designed to guide contour evolution in an effective region. Then, a novel implicit region based on modified data term using a richer form of local image clustering information at each point of interest gathered over a multiple-channel feature image space is presented, to enhance the robustness of the variations found in and around the OC region. The presented models symmetrically integrate the information at each point in a single-channel image from a multiple-channel feature image space. Thus, these models correlate with the concept of symmetry. The proposed models are tested on the publicly available DRISHTI-GS database and the experimental results demonstrate that the models outperform state-of-the-art methods.

Ca(2+)-dependent Cl- channels in undifferentiated human colonic cells (HT-29). I. Single-channel properties

1993 ◽  
Vol 264 (4) ◽  
pp. C968-C976 ◽  
Author(s):  
A. P. Morris ◽  
R. A. Frizzell
Keyword(s):  
Single Channel ◽  
Voltage Sensitivity ◽  
Channel Activity ◽  
Patch Clamp Technique ◽  
Channel Activation ◽  
Whole Cell ◽  
Multiple Channel ◽  
Cl Channel ◽  
Cl Channels ◽  
Ht 29

The patch-clamp technique was combined with camera-based intracellular Ca2+ concentration ([Ca2+]i) imaging to identify the single-channel basis of the Ca(2+)-dependent Cl- conductance in human colonic adenocarcinoma cells (HT-29). Cl- channels were activated when membrane patches were excised into solutions containing high (1 microM) Ca2+ concentrations. Their single-channel conductance, measured by amplitude histogram analysis, averaged 13 pS at -90 mV and 16 pS at +90 mV membrane potential (MP). In multiple channel patches, Cl- currents showed properties similar to Ca(2+)-activated whole cell currents: outward rectification and time-dependent activation at depolarizing MP. Channel activity disappeared shortly after patch excision from the cell. In cell-attached patches, Cl- channel opening was infrequent at resting [Ca2+]i values (96 +/- 18 nM), but when [Ca2+]i was increased by the Ca2+ ionophore ionomycin (1 microM), Cl- channels were activated with a time course that paralleled the [Ca2+]i rise. Repetitive ionophore exposure produced equivalent rises in [Ca2+]i, but the corresponding Cl- channel activity became progressively reduced. The Ca(2+)-mediated agonist neurotensin (50 nM) elicited a transient Cl- channel activation that preceded the generalized cellular [Ca2+]i rise. Channel activation with neurotensin occurred in the absence of pipette Ca2+ but was abolished by preloading cells with 1,2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid. Thus, in response to the Ca(2+)-mediated agonist neurotensin, Cl- channel activation results from Ca2+ mobilization from intracellular pools localized within the vicinity of the plasma membrane. The Ca2+ dependency, voltage sensitivity, and kinetics of this 15-pS Cl- channel indicate that it is the basis of the whole cell Ca(2+)-activated Cl- current.

scholarly journals Multiple Channel Electrocardiogram QRS Detection by Temporal Pattern Search

2021 ◽  
Author(s):  
Bruce R Hopenfeld
Keyword(s):  
Temporal Pattern ◽  
Single Channel ◽  
Synthetic Data ◽  
Pattern Search ◽  
Peak Time ◽  
Noise Resistance ◽  
Multiple Channel ◽  
False Discovery ◽  
Capacitive Electrode ◽  
Matching Window

A highly constrained temporal pattern search based multiple channel heartbeat detector (TEPS) is described. TEPS generates sequences of peaks and statistically scores them according to: 1) peak time coherence across channels; 2) peak prominence; 3) temporal regularity; and 4) number of skipped beats. TEPS was tested on 31 records of three channel capacitive electrode data from the UnoViS automobile database. TEPS showed a sensitivity (SE) of 91.3% and a false discovery rate (FDR) of 3.0% compared to an SE and FDR of 75.3% and 65.0% respectively for a conventional single channel detector (OSEA) applied separately to the three channels. The peak matching window was 30ms. The percentage of 5 second segments with average heart rates within 5 beats/minute of reference was also measured. In 6 of the 31 records, the TEPS percentage was at least 30% greater than that of OSEA. TEPS was also applied to synthetic data comprising a known signal corrupted with calibrated amounts of noise. At a fixed SE of 85%, increasing the number of channels from one to two resulted in an improvement of approximately 5dB in noise resistance, while increasing the number of channels from two to four resulted in an improvement of approximately 3dB in noise resistance. The quantification of noise resistance as a function of the number of channels could help guide the development of wearable electrocardiogram monitors.

scholarly journals Analisis Sistem Antrian Di PT. Bank Negara Indonesia (Persero) Tbk. Kantor Cabang Manado

d'CARTESIAN ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 8
Author(s):  
Ripit Budiman ◽  
Djoni Hatidja ◽  
Marline S Paendong
Keyword(s):  
Data Collection ◽  
Characteristic Length ◽  
Arrival Rate ◽  
System Model ◽  
Queuing Model ◽  
Multiple Channel ◽  
Query System ◽  
Branch Office ◽  
S Model ◽  
Number Of Customers

The purpose of this research was to determine the queuing model and determine the characteristic length of the queue at PT. Bank Negara Indonesia Branch Office of Manado. Data collection was carried out for 5 days. The queuing system model used is the B:M/M/S Model (Multiple Channel Query System), the number of tellers that operating there are 7 tellers and the service used is First Come First Served, the arrival rate is Poisson distribution, and the service time is Exponential distribution. The result of this research shows the average number of arrivals is 42 customers who come per hour, and the average number of customers served is 9 customers served per hour. There are no customers in the 0.01 system, the average number of customers in the system is 6 customers, the time customers spend in the queue and is being served is 8-9 minutes, the average number of customers waiting in the queue to be served is 1 customer, and the average time of customers spend for waiting in the queue is 1-2 minutes.

scholarly journals Analisis Antrian Pada Stasiun Pengisian Bahan Bakar Umum (SPBU) 34-151-28 Jatiuwung Tangerang

UNISTEK ◽  
2018 ◽  
Vol 5 (2) ◽  
pp. 37-41
Author(s):  
Khamaludin Khamaludin
Keyword(s):  
Multiple Channel ◽  
Line Theory ◽  
Query System

Masalah antrian berhubungan dengan efesiensi dimana terjadinya antrian akanmengurangi kenyamanan pelayanan kepada pelanggan. Hal ini juga salah satunya yangterjadi di Stasiun Pengisian Bahan Bakar Umum(SPBU) 34-151-28 Jatiuwung, antrian initerjadi karena banyaknya fasilitas yang tidak sebanding dengan laju kedatangan pelanggan,sehingga kinerja pelayanan antrian belum optimal. Tujuan dari penelitian ini adalah untukmenganalisis kinerja pelayan sistem antrian (SPBU) 34-151-28 Jatiuwung. Untukmembuktikan dugaan ini diadakan penelitian langsung ke lapangan dengan landasan teoriyang dianggap relevan, yaitu teori antrian atau line theory. Penelitian ini dilakukan diJatiuwung selama enam hari. Pengumpulan data pada studi kuantitatif ini menggunakan dataprimer yaitu observasi serta wawancara dan juga data sekunder yang diperoleh dariperusahaan dan juga diperoleh dari berbagai pustaka dan literature lainnya yang memilikirelevansi dengan sasaran penelitian seperti buku-buku teks mengenai sistem antrian. Analisisdari penelitian ini membuktikan bahwa kegiatan pelayanan antrian pada (SPBU) 34-151-28Jatiuwung Tangerang sudah optimal karena lama pelanggan mengantri masih berada dibawah standar pelayanan yang ditetapkan SPBU 34-151-28 Jatiuwung Tangerang. Alatanalisis dari penelitian ini adalah model antrian M/M/S (Multiple Channel Query System ataumodel antrian jalur berganda).Model yang diterapkan di SPBU 34-151-28 JatiuwungTangerang dengan 4 buah stasiun pengisian, dan berdasarkan perhitungannya SPBU 34-151-28 Jatiuwung Tangerang sudah optimal karena waktu terpanjang selama 480 detik yangdibutuhkan oleh seorang pelanggan dalam antrian tidak melebihi dari batas standar yaitu31.5 detik. SPBU Jatiuwung Tangerang sudah cukup meningkatkan kinerja pelayanannya.Kata kunci: antrian, pelayanan, pelanggan

Floodplain evolution in the East Midlands, United Kingdom: the Lateglacial and Flandrian alluvial record from the Soar and Nene valleys

1994 ◽  
Vol 348 (1687) ◽  
pp. 261-293 ◽  
Keyword(s):  
Single Channel ◽  
Evolutionary Model ◽  
Silty Clay ◽  
Lateral Instability ◽  
Channel System ◽  
Multiple Channel ◽  
Meandering Channels ◽  
East Midlands ◽  
Sedimentary Architecture ◽  
History Of

This paper describes and interprets the floodplain stratigraphy of two low-energy rivers in the East Midlands, U.K. and goes on to present an appropriate model of floodplain evolution that may be applicable to other lowland rivers in temperate mid-latitudes. Work has been undertaken at the reach level to try and characterize the entire system. In general only laterally extensive exposures have been used, and detailed stratigraphic and microstratigraphic recording has been used to facilitate process interpretations. All the sites have been radiocarbon dated. The dataset consists of three sites in the Soar valley and five sites in the larger Nene valley. The most common sedimentary architecture is a basal gravel with occasional shallow channels, covered by a mixed loam (sand-silt-clay) of variable thickness with landsurfaces and evidence of bioturbation. This loam is frequently interrupted by palaeochannels, and finally all these sediments are buried by a massive silt-clay unit. Most of the palaeochannels were abandoned in the early Flandrian, or between ca. 3500 years BP and 2000 years BP. The superficial silty clay is diachronous largely because of the irregular topography of the floodplain onto which it was deposited; dates from non-palaeochannel sections range from ca. 3500 BP to ca. 2100 years BP. The floodplain stratigraphy has been profoundly influenced by soil development and sub-aerial processes, especially tree-throw, which has produced distinctive sedimentary structures. The loam unit is interpreted as a soil which developed inbetween both silting palaeochannels and active channels. The landsurfaces are both earlier and contemporaneous with the later phase of channel abandonment. There is some evidence, ca . 5000-4000 BP, of a rise in floodplain watertables. An evolutionary model is proposed which can account for the stratigraphic evidence reported here. It is based upon the development of an anastomosing (stable multiple-channel) system from an initial braided-river topography and its eventual conversion to a predominantly single-channel system due to floodplain and channel siltation. The reduction of channels is compensated for by a change in channel types and capacities while the floodplain aggrades; this is the stable-bed aggrading-banks (SBAB) model, which necessitates no changes in discharges. It is suggested that the sub-meandering or straight to sinuous nature of many lowland U.K. channels may be due to their evolution from an anastomosing pattern where the least meandering channels survived typically with a box-S shape planform and at the edges of the floodplain. The sites also show that the Lateglacial fluvial history of the two catchments seems to have been very different, with incision and subsequent aggradation occurring during the Younger Dryas in the Nene but not in the Soar. Given the proximity and similarity of the two catchments this suggests that relatively minor local factors may have been able to push some catchments across fluvial thresholds. In contrast the Flandrian history of the two rivers has been broadly similar, although there is evidence of greater lateral instability and floodplain reworking in the Soar which may be due to hydrogeological factors or a different landuse history. This work strongly suggests that new process-based interpretations of floodplain stratigraphy, and new models of floodplain evolution may be required before alluvial history can be easily related to the changing Lateglacial and Flandrian climate of lowland U.K.

Effects of Channel Aspect Ratio on Convective Heat Transfer in an Electronics Cooling Heat Sink Having Agitation and Fan-Induced Throughflow

2013 ◽  
Author(s):  
Smita Agrawal ◽  
Longzhong Huang ◽  
Terrence Simon ◽  
Mark North ◽  
Tianhong Cui
Keyword(s):  
Heat Transfer ◽  
Aspect Ratio ◽  
Heat Sink ◽  
Single Channel ◽  
Electronics Cooling ◽  
Heat Sinks ◽  
Channel Width ◽  
Channel Height ◽  
Transfer Coefficients ◽  
Multiple Channel

Fan-driven throughflow is frequently used for convective cooling of electronics. Channels with walls behaving like fins are common. In the present study, the flow inside the channels is agitated by means of translationally oscillating plates called agitators. Effectiveness of agitation by oscillating blades is found to be dependent on the channel width, a parameter studied herein. Heat sinks having narrower channels have a greater number of channels in total for the fixed size of heat sink and therefore greater heat transfer area than heat sinks with wider channels. Thus, with the same channel height, as the aspect ratio increases, channel width decreases, and it is found that opportunities for agitation are reduced and the generated turbulence is more strongly damped, thus reducing heat transfer coefficients. A study was carried out to find direction toward an optimal number of channels for a given heat sink using the agitation strategy. As part of the study, fluid damping and power consumption to drive the agitator assembly were addressed. The study was done numerically using ANSYS FLUENT on a representative single channel of the heat sink and the results were extended to the full size, multiple-channel heat sink system. Recommendations for moving toward an optimum geometry, based on thermal performance and agitator power are made.

scholarly journals Preliminary analysis of the sensitivity of the FEM model of the process of dry ice extrusion in the die with a circularly converging channel on the changing its geometrical parameters

2021 ◽  
Vol 1199 (1) ◽  
pp. 012006
Author(s):  
J Górecki
Keyword(s):  
Energy Efficiency ◽  
Numerical Model ◽  
Manufacturing Process ◽  
Preliminary Analysis ◽  
Single Channel ◽  
Geometrical Parameters ◽  
Fem Model ◽  
Dry Ice ◽  
Multiple Channel ◽  
Converging Channel

Abstract The article presents the results of a preliminary analysis of the numerical model susceptibility for simulating the process of dry ice compaction utilizing single-channel and multiple channel dies. The work focuses on a preliminary comparison of the influence of changes in the geometrical parameters of the 4 types of compression channels. Based on the results of the performed analyses, conclusions were formulated for a basis and direction of further study regarding improving the energy efficiency of the indicated manufacturing process.

Sign in / Sign up

Export Citation Format

Share Document