scholarly journals Dimensioning a Call Center: Simulation or Queue Theory?

2009 ◽  
Vol 2 (2) ◽  
pp. 34 ◽  
Author(s):  
Marco Aurélio Carino Bouzada
Keyword(s):  
Analytical Method ◽  
Analytical Methods ◽  
Call Center ◽  
Experimental Approach ◽  
Call Centers ◽  
Experimental Methods ◽  
New Approach ◽  
Alternative Methodology ◽  
Queue Theory ◽  
Set Up

The objective of this paper is to establish a dichotomy - opposing analytical methods (such as Queue Theory) to experimental methods (such as Simulation) and discussing their adequateness to complex operations - set up in the matter of dimensioning the handling capacity of a large brazilian call centers company. The literature related to the application of such methods at call centers is reviewed, and the way the question is treated nowadays by the company is described. Then an experimental approach is suggested to be implemented as an alternative methodology to deal with the issue, instead of the analytical method in use. The results obtained are used to justify the adequacy of the experimental approach to the modern call centers operation, as long as it is possible to have the model closer to reality. The main implication points to a better understanding of the operation achieved with the new approach

Work Stress and Organisational Citizenship Behaviours (OCBs) in Call Centers Employees

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Sunita ◽  
Urvashi Singh ◽  
Shalini Singh ◽  
Rajnee Sharma
Keyword(s):  
Negative Impact ◽  
Call Centers ◽  
Negative Relationship ◽  
Married Couples ◽  
Call Centre ◽  
Simple Correlation ◽  
Nuclear Families ◽  
Set Up ◽  
Stress At Work ◽  
The Relationship

The present study was conducted to examine the relationship between organisational stress and organisational citizenship behaviours (OCBs) in employees of call centers. The study also further explored as how stress at work set-up has negative impact on OCBs. A sample of 250 employees working in call centre of Gurgaon belonging to an age group of 25-30 years were selected on availability basis. All were working married couples living in nuclear families. Job stress survey (Spielberger & Vagg, 1999) and Organisational Citizenship Behaviour (Bateman & Organ, 1983) were administered. Data was analysed by using simple correlation and multiple regression. Results showed the negative relationship between organisational stress and OCBs. Results of regression analysis also exhibited the negative impact of stress on OCBs. The implications for the employees are discussed.

Lateral Adsorbate Interactions Inhibit HCOO- While Promoting CO Selectivity for CO2 Electrocatalysis on Ag

2018 ◽  
Author(s):  
Divya Bohra ◽  
Isis Ledezma-Yanez ◽  
Guanna Li ◽  
Wiebren De Jong ◽  
Evgeny A. Pidko ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Experimental Approach ◽  
Decisive Role ◽  
Experimental Methods ◽  
Reaction Intermediates ◽  
Intermediate Species ◽  
Experimental Knowledge ◽  
Complex Interactions ◽  
Ag Catalysts

<p>The analysis presented in this manuscript helps bridge an important fundamental discrepancy between the existing theoretical and experimental knowledge regarding the performance of Ag catalysts for CO<sub>2</sub> electrochemical reduction (CO<sub>2</sub>ER). The results demonstrate how the intermediate species *OCHO is formed readily en-route the HCOO<sup>– </sup>pathway and plays a decisive role in determining selectivity of a predominantly CO producing catalyst such as Ag. Our theoretical and experimental approach develops a better understanding of the nature of competition as well as the complex interactions between the reaction intermediates leading to CO, HCOO<sup>–</sup> and H<sub>2</sub> during CO<sub>2</sub>ER.</p><p><br></p><p>Details of computational and experimental methods are present in the Supporting Information provided. </p><p><br></p><p><br></p>

scholarly journals Detection capability of Migdal effect for argon and xenon nuclei with position sensitive gaseous detectors

2020 ◽  
Author(s):  
Kiseki D Nakamura ◽  
Kentaro Miuchi ◽  
Shingo Kazama ◽  
Yutaro Shoji ◽  
Masahiro Ibe ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Experimental Approach ◽  
Isotope Separation ◽  
Mass Region ◽  
Background Rate ◽  
Argon Gas ◽  
Low Mass ◽  
Position Sensitive ◽  
Set Up ◽  
Direct Dark Matter

Abstract Migdal effect is attracting interests because of the potential to enhance the sensitivities of direct dark matter searches to the low mass region. In spite of its great importance, the Migdal effect has not been experimentally observed yet. A realistic experimental approach towards the first observation of the Migdal effect in the neutron scattering was studied with Monte Carlo simulations. In this study, potential background rate was studied together with the event rate of the Migdal effect by a neutron source. It was found that a table-top sized ~ (30cm)3 position-sensitive gaseous detector filled with argon or xenon target gas can detect characteristic signatures of the Migdal effect with sufficient rates (O(102 ~ 103) events/day). A simulation result of a simple experimental set-up showed two significant background sources, namely the intrinsic neutrons and the neutron induced gamma-rays. It is found that the intrinsic neutron background rate for the argon gas is acceptable level and some future study for the reduction of the gamma-rays from the laboratory would make the observation of the Migdal effect possible. The background for the xenon gas, on the other hand, is found to be much more serious than for the argon gas. Future works on the isotope separation as well as the reduction of the gamma-rays from the detector and laboratory will be needed before the Migdal effect observation for xenon gas case.

Telephone-based consultation in an acute eye clinic service: A patient satisfaction survey

2021 ◽  
pp. 112067212110307
Author(s):  
Julia Sieberer ◽  
Patrick Hughes ◽  
Indy Sian
Keyword(s):  
Healthcare Professionals ◽  
Medical Specialties ◽  
New Approach ◽  
High Satisfaction ◽  
Negative Comments ◽  
Patient Responses ◽  
Set Up ◽  
Strongly Agree ◽  
The Impact ◽  
Park Hospital

Objectives: The coronavirus pandemic has forced healthcare staff across all medical specialties to adapt new and different ways of working. A new approach has been set up in the Acute Referral Clinic (ARC) at Musgrove Park Hospital and a survey has been conducted to measure the impact of the new method on patient and healthcare professionals’ satisfaction with the new service. Methods: A telephone-based consultation was introduced in ARC at Musgrove Park Hospital in March 2020 and patients were instructed to fill out a questionnaire containing eight items using a Likert Scale 1 (‘very poor/disagree’) to 4 (‘very good/strongly agree’) plus two boxes for open positive and negative comments respectively. Likewise a questionnaire was designed in order to assess the healthcare professionals’ satisfaction using the new approach. Data collection took place over a two month period between the end of March 2020 and end of May 2020. The data underwent quality control and was analysed using descriptive statistics. Results: Patient responses illustrated high satisfaction scores with an overall rating of very good (89.4%). The healthcare professionals’ rating of the service was good (28.6% – ‘very good/strongly agree’, 57.1% – ‘good/agree’). The safety rating of the new approach was overall rated ‘very good’ with 90.4% and 71.4% of patients and healthcare professionals respectively. Conclusions: The telephone consultations introduced in the wake of COVID-19 are well accepted by both patients and doctors. There are some limitations of the approach, foremost being consultation time and clinic space but these do not outweigh the general benefit of this format amidst a pandemic setting.

Developments in mycotoxin analysis: an update for 2010-2011

2012 ◽  
Vol 5 (1) ◽  
pp. 3-30 ◽  
Author(s):  
G. Shephard ◽  
F. Berthiller ◽  
P. Burdaspal ◽  
C. Crews ◽  
M. Jonker ◽  
...  
Keyword(s):  
Analytical Method ◽  
Analytical Methods ◽  
Method Development ◽  
Rapid Development ◽  
Ergot Alkaloids ◽  
Alternaria Toxins ◽  
Research Publications ◽  
Mycotoxin Analysis ◽  
The Subject ◽  
Conventional Methods

This review highlights developments in mycotoxin analysis and sampling over a period between mid-2010 and mid-2011. It covers the major mycotoxins: aflatoxins, Alternaria toxins, ergot alkaloids, fumonisins, ochratoxin, patulin, trichothecenes, and zearalenone. Analytical methods for mycotoxins continue to be developed and published. Despite much interest in immunochemical methods and in the rapid development of LC-MS methodology, more conventional methods, sometimes linked to novel clean-up protocols, have also been the subject of research publications over the above period. Occurrence of mycotoxins falls outside the main focus of this review; however, where relevant to analytical method development, this has been mentioned.

scholarly journals The origins and evolution of Cypriot glazed ware productions during the thirteenth to seventeenth centuries CE

2021 ◽  
Vol 13 (2) ◽  
Author(s):  
Carmen Ting ◽  
Thilo Rehren ◽  
Athanasios Vionis ◽  
Vasiliki Kassianidou
Keyword(s):  
Eastern Mediterranean ◽  
Medieval Period ◽  
Late Medieval ◽  
New Approach ◽  
Commercial Activities ◽  
Late Medieval Period ◽  
Thin Section Petrography ◽  
Set Up ◽  
Economic Developments ◽  
Full Consideration

AbstractThis paper challenges the conventional characterisation of glazed ware productions in the eastern Mediterranean, especially the ones which did not feature the use of opaque or tin-glazed technology, as technologically stagnant and unsusceptible to broader socio-economic developments from the late medieval period onwards. Focusing on the Cypriot example, we devise a new approach that combines scientific analyses (thin-section petrography and SEM-EDS) and a full consideration of the chaîne opératoire in context to highlight the changes in technology and craft organisation of glazed ware productions concentrating in the Paphos, Famagusta and Lapithos region during the thirteenth to seventeenth centuries CE. Our results indicate that the Paphos production was short-lived, lasting from the establishment of Frankish rule in Cyprus in the thirteenth century to the aftermath of the fall of the Crusader campaigns in the fourteenth century. However, glazed ware production continued in Famagusta and Lapithos from the late thirteenth/fourteenth centuries through to the seventeenth century, using technical practices that were evidently different from the Paphos production. It is possible that these productions were set up to serve the new, local demands deriving from an intensification of commercial activities on the island. Further changes occurred to the technical practices of the Famagusta and Lapithos productions around the 16th/17th centuries, coinciding with the displacement of populations and socio-political organisation brought by the Ottoman rule.

A Review: Method Development Validation and Degradation Studies of some Anticancer Drugs

2021 ◽  
pp. 5443-5448
Author(s):  
Punna Venkateshwarlu ◽  
Mehul M. Patel
Keyword(s):  
Liquid Chromatography ◽  
Anticancer Drugs ◽  
Analytical Method ◽  
Analytical Methods ◽  
Bioanalytical Methods ◽  
Method Development ◽  
Estimation Methods ◽  
Simultaneous Estimation ◽  
Pharmaceutical Dosage Forms ◽  
Stability Indicating

This article reviews the various analytical methods reported so far in the literature for the determination of stability and impurity profile the lenalidomide and palbociclib anti cancer drugs in single or combination with other drugs in bulk, pharmaceutical dosage forms, biological fluids, stability indicating and impurity profiling methods. The analytical methods used for the estimation of lenalidomide and palbociclib anticancer drugs reviewed in this paper includes ultraviolet spectrophotometry,high performance liquid chromatography (HPLC) ,ultra performance liquid chromatography (UPLC) ,liquid chromatography-mass spectrometry (LC-MS) and electrophoresis. This review focus on the effect of all chromatographic parameters so as to provide as fast, reliable and cost effective methodology of testing. Method development is the process of proving that analytical method is acceptable for use to measure the concentration of active pharmaceutical ingredient in a specific compound dosage form which must be validated to provide reliable data for regulatory submissions. This reviewed is mainly on analytical method development and validation, stability indicating methods, simultaneous estimation methods and bioanalytical methods. The review covers the time period from 2007 to 2019 during which analytical methods including all types of spectrophotometric and chromatographic techniques were reported. The Review covers lenalidomide and palbociclib API and formulation analytical and bioanalytical methods.

scholarly journals Relação entre condições de trabalho e sintomas vocais em operadores de um call center modelo

2017 ◽  
Vol 22 (0) ◽  
Author(s):  
Bárbara Bento Girardi ◽  
Daniel Lucas Picanço Marchand ◽  
Taís de Campos Moreira ◽  
Renata Loss Drummond ◽  
Mauriceia Cassol
Keyword(s):  
Call Center ◽  
Call Centers ◽  
Voice Symptoms

RESUMO Introdução Os operadores de call centers são profissionais da voz com alta demanda vocal e, consequentemente, sujeitos a distúrbios e sintomas vocais. Objetivo: Caracterizar aspectos vocais e laríngeos em operadores de um call center que segue as normas regulamentadoras de ergonomia, mensurando autopercepção vocal, avaliação otorrinolaringológica e análise perceptivo-auditiva vocal. Métodos Participaram do estudo 30 operadores de call center, entre 18 e 41 anos de idade. Todos os sujeitos foram avaliados por meio da Escala de Sintomas Vocais - versão brasileira da Voice Symptoms Scale (VoiSS), avaliação otorrinolaringológica por meio de videonasofibrolaringoscopia e avaliação perceptivo-auditiva da voz com a escala GRBASI, que avalia grau de alteração vocal (G), rugosidade da voz (R), soprosidade (B), astenia (A), tensão (S) e instabilidade (I). Resultados Na Escala de Sintomas Vocais, houve correlação entre o domínio geral e os demais subdomínios e entre os subdomínios limitação e físico. Na avaliação otorrinolaringológica, 12 operadores apresentaram alguma alteração, como acúmulo de secreção à fonação e fendas. A análise perceptivo-auditiva da voz encontrou indivíduos com vozes normais e com grau de alteração discreto a moderado, além de correlação entre o item instabilidade da escala GRBASI com o grau geral, rugosidade, soprosidade e astenia. Conclusão Ambientes de trabalho adequados e que primam por cuidados com a voz podem melhorar a qualidade laboral dos profissionais de call center, amenizando os riscos de desenvolvimento de distúrbios vocais. Contudo, fatores físicos, sociais, ambientais, organizacionais e psicológicos podem ocasionar sintomas vocais nesses profissionais da voz.

scholarly journals Deformation analysis with Total Least Squares

2006 ◽  
Vol 6 (4) ◽  
pp. 663-669 ◽  
Author(s):  
M. Acar ◽  
M. T. Özlüdemir ◽  
O. Akyilmaz ◽  
R. N. Çelik ◽  
T. Ayan
Keyword(s):  
Least Squares ◽  
Total Least Squares ◽  
Transformation Model ◽  
Deformation Analysis ◽  
New Approach ◽  
Main Research ◽  
Research Fields ◽  
Analysis Process ◽  
Alternative Methodology ◽  
Coordinate Changes

Abstract. Deformation analysis is one of the main research fields in geodesy. Deformation analysis process comprises measurement and analysis phases. Measurements can be collected using several techniques. The output of the evaluation of the measurements is mainly point positions. In the deformation analysis phase, the coordinate changes in the point positions are investigated. Several models or approaches can be employed for the analysis. One approach is based on a Helmert or similarity coordinate transformation where the displacements and the respective covariance matrix are transformed into a unique datum. Traditionally a Least Squares (LS) technique is used for the transformation procedure. Another approach that could be introduced as an alternative methodology is the Total Least Squares (TLS) that is considerably a new approach in geodetic applications. In this study, in order to determine point displacements, 3-D coordinate transformations based on the Helmert transformation model were carried out individually by the Least Squares (LS) and the Total Least Squares (TLS), respectively. The data used in this study was collected by GPS technique in a landslide area located nearby Istanbul. The results obtained from these two approaches have been compared.

scholarly journals Quantification of Fructans in Bioethanol Stillage Based On a Simplified Analytical Method

2021 ◽  
Author(s):  
Andreas Zimmermann ◽  
Martin Kaltschmitt
Keyword(s):  
Analytical Method ◽  
Measurement Errors ◽  
Process Development ◽  
Stationary Phases ◽  
New Approach ◽  
Sample Matrix ◽  
Sample Throughput ◽  
Complex Sample ◽  
Potential Substrate

Abstract Bioethanol stillage, the main by-product of industrial bioethanol production, is a potential substrate for fructans. However, the determination and quantification of fructans in such complex sample matrices is still a challenge for the corresponding analytics to be overcome in order to allow for the identification and utilisation of such unused fructan sources. Especially a possible utilisation or rather the corresponding process development requires appropriate analytics first. Thus, this paper aims to illuminate the basics of fructan quantification in stillage and the corresponding challenges particularly arising with widely used HPLC-RID systems. On this basis, a new approach for fructan quantification is presented based on such HPLC-RID systems allowing for a reliable and especially simple fructan determination in bioethanol stillage for comparably high sample throughput. The developed method performs fructan quantification by determination of fructose and glucose equivalents after a targeted acidic hydrolysis adapted to the respective sample matrix. By means of two different stationary phases, the problem of limited resolution in case of HPLC-RID is overcome and thus measurement errors are reduced. The approach towards the adapted analytical method can be transferred easily to comparable complex sample matrices.

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