Simulation for Shipyard Performance Analysis

1986 ◽  
Vol 2 (04) ◽  
pp. 250-259
Author(s):  
John F. Hatley
Keyword(s):  
Information Source ◽  
Planning Horizon ◽  
Service Levels ◽  
Discrete Simulation ◽  
Daily Work ◽  
Computer Based ◽  
Repair Facility ◽  
Ship Repair ◽  
Plant Capacity ◽  
Planning And Operation

Shipyard management operations require a continuous balance between ongoing vessel repairs and scheduling, while maintaining the best possible service levels in response to owners' needs and high rates of facility utilization. To maintain this desirable equilibrium between service demands and plant capacity, operations needs to monitor daily work loads and to develop a larger planning horizon. Simulation is presented in this paper as a tool employed to gain an overall operations perspective by analyzing, from a macroview, the utilization rates for shipyard facilities and attendant service levels provided to ship owners. The effects of market shifts or facility orientation are investigated in five "what if?" scenarios and analyzed by computer-based discrete simulation methods to predict how demand variations will be reflected in yard performance levels. The results show that simulation is a valuable information source for management during the planning and operation of a ship repair facility, providing a concise look at overall operations and focusing on bottlenecks affecting shipyard performance.

Managing User-Centered Design Activities in Distributed Agile Development

2021 ◽  
Author(s):  
Sultan Alyahya ◽  
Ohoud Almughram
Keyword(s):  
Participatory Design ◽  
Agile Development ◽  
Design Teams ◽  
User Centered Design ◽  
Management Tools ◽  
Daily Work ◽  
Development Teams ◽  
Design Activities ◽  
Computer Based ◽  
User Centered

Abstract The integration of user-centered design (UCD) activities into agile information systems development has become more popular recently. Despite the fact that there are many ways the merging of UCD activities into agile development can be carried out, it has been widely recognized that coordinating design activities with development activities is one of the most common problems, especially in distributed environments where designers, developers and users are spread over several sites. The main approach to coordinate UCD activities with distributed agile development is the use of informal methods (e.g. communication through using video conference tools). In addition to the temporal, geographical and socio-cultural barriers associated with this type of methods, a major limitation is a lack of awareness of how UCD activities and development activities affect each other. Furthermore, some agile project management tools are integrated with design platforms but fail to provide the necessary coordination that helps team members understand how the design and development activities affect their daily work. This research aims to support the effective management of integrating UCD activities into distributed agile development by (i) identifying the key activity dependencies between UX design teams and development teams during distributed UCD/agile development and (ii) designing a computer-based system to provide coordination support through managing these activity dependencies. In order to achieve these objectives, two case studies are carried out. Our findings revealed 10 main dependencies between UCD design teams and development teams as shown by six types of activity. In addition, the participatory design approach shows that developing a computer-based system to manage seven of these selected dependencies is achievable.

Computer-Based Modeling to Determine the Visibility and Minimum Retroreflectivity of Pavement Markings

2000 ◽  
Vol 1708 (1) ◽  
pp. 47-60 ◽  
Author(s):  
Thomas Schnell ◽  
Helmut T. Zwahlen
Keyword(s):  
Search Algorithm ◽  
Service Level ◽  
Point Of View ◽  
Blowing Snow ◽  
Service Levels ◽  
Pavement Markings ◽  
Federal Highway ◽  
Visibility Distance ◽  
Computer Based ◽  
Pavement Marking

The Federal Highway Administration was mandated by the U.S. Congress to establish in-service levels of minimum pavement-marking retroreflectivity and commissioned research to determine the minimum in-service level from a driver’s point of view. Computer Aided Road Marking Visibility Evaluator (CARVE) was developed and refined to systematically investigate drivers’ visual needs in terms of nighttime pavement-marking visibility and to allow the formulation of minimum retroreflectivity recommendations. The components within CARVE and the methods, algorithms, and equations that are used to determine the visibility distance of a given pavement-marking treatment are presented and discussed. CARVE systematically manipulates the pavement-marking efficiency (ηPM) up and down using a bisecting-search algorithm until the desired minimum required preview distance for selected conditions is achieved. Future expansions of CARVE, or the development of models that supersede it, may require additional research to investigate the wet-weather visibility of pavement markings, the effects of combined treatments consisting of pavement markings and raised reflective markers, and the visibility in inclement weather such as fog and blowing snow.

scholarly journals Forced posture of neurology residents in daily routine on the ward in Germany

2021 ◽  
Author(s):  
Daniela Ohlendorf ◽  
Anne Bijanzadeh ◽  
Ingo Hermanns ◽  
Rolf Ellegast ◽  
Laura Fraeulin ◽  
...  
Keyword(s):  
Working Time ◽  
Blood Collection ◽  
Computer Assisted ◽  
Daily Routine ◽  
Office Work ◽  
Daily Work ◽  
Total Percentage ◽  
Computer Based ◽  
Neutral Posture

Abstract Background The aim of this pilot study was to analyze the work of neurologists regarding static posture (> 4 s) and to identify awkward postures. Methods A total of 9 neurologists (assistant physicians; 3 male, 6 female) participated in this study. Kinematic data were collected using the computer-assisted acquisition and long-term analysis of musculoskeletal loads (CUELA; IFA, Sankt Augustin, Germany) system. Daily work (“office work,” “measures on patients,” and “other activities”) was analyzed with a computer-based task analysis. Results During ”measures on patients,” more than 80% of the total percentage of non-neutral posture was assumed with a flexed position of the head and entire back, both during “blood collection” (4.7% of the time) and while “placing intravenous catheters” (8.3% of the time). In contrast, long static postures (> 30 s) in the head and neck area, including the thoracic spine, were adopted during “office work.” Despite the increased total percentage of non-neutral attitudes during measures on patients, the time share of 3.4% of the total working time is so small that the risk for developing musculoskeletal disorders (MSD) is negligible. In contrast, office work, which comprises 50.8% of the total working time and longer static postures, has a potential risk for the development of MSD. Conclusion The present study is the first kinematic pilot analysis in the field of in-patient neurological assistants. Non-neutral as well as static postures in everyday work could be identified. Potential MSD can be reduced by optimizing the working height and by taking regular breaks to loosen the musculoskeletal system.

Analysis of Physicians’, Pharmacists’, and Nurses’ Attitudes Toward the Use of Computers to Access Drug Information

1990 ◽  
Vol 29 (02) ◽  
pp. 99-103 ◽  
Author(s):  
J. M. Shumway ◽  
A. I. Jacknowitz ◽  
M. A. Abate
Keyword(s):  
Health Care ◽  
Information Systems ◽  
Health Care Professionals ◽  
Drug Information ◽  
Daily Work ◽  
Computer Information Systems ◽  
Work Routine ◽  
Computer Based ◽  
Area Of Concern

AbstractThe appropriate utilization of computerized drug information systems is widely recognized as an area of concern by health care professionals. For this reason, attitudes of health care professionals in office-based practices toward computer-based drug information were examined. Sixty individuals in five different practice settings completed an attitude instrument. Of the 36 items categorized into five attitudinal categories, the answers to six items (in three distinct categories) were found to be statistically different among physicians, nurses, and pharmacists. These differences indicate that physicians and nurses are less knowledgeable about the benefits that can be obtained through the use of computerized information resources and, consequently, are more skeptical concerning the role of computer information systems in reducing the costs and improving the quality of health care. Of interest as well was the finding that pharmacists felt more strongly than physicians and nurses that computer information systems would readily fit into their daily work routine.

CLASSIFICATION OF ARRHYTHMIA IN ELECTROCARDIOGRAM USING EMD BASED FEATURES AND SUPPORT VECTOR MACHINE WITH MARGIN SAMPLING

2013 ◽  
Vol 12 (03) ◽  
pp. 1350015 ◽  
Author(s):  
M. SUCHETHA ◽  
N. KUMARAVEL
Keyword(s):  
Support Vector Machine ◽  
Information Source ◽  
Support Vector ◽  
Intrinsic Mode Functions ◽  
Ecg Signals ◽  
Electrocardiogram Signals ◽  
Mode Decomposition ◽  
Computer Based ◽  
Value Decomposition

Electrocardiogram (ECG) signals represent a useful information source about the rhythm and the functioning of the heart. Any disturbance in the heart's normal rhythmic contraction is called an arrhythmia. Analysis of Electrocardiogram signals is the most effective available method for diagnosing cardiac arrhythmias. Computer based classification of ECG provides higher accuracy and offer a potential of an affordable cardiac abnormality mass screening. The empirical mode decomposition is performed on various arrhythmia signals and different levels of intrinsic mode functions (IMF) are obtained. Singular value decomposition (SVD) is used to extract features from the IMF and classification is performed using support vector machine. This method is more efficient for classification of ECG signals and at the same time provides good generalization properties.

Usage and Usability of Standard Operating Procedures (SOPs) among the Coordination Centers for Clinical Trials (KKS)

2008 ◽  
Vol 47 (06) ◽  
pp. 505-510 ◽  
Author(s):  
S.P. Luntz ◽  
P. Knaup ◽  
K. Krockenberger
Keyword(s):  
Clinical Trials ◽  
Information Retrieval ◽  
Retrieval System ◽  
Information Retrieval System ◽  
Return Rate ◽  
Standard Operating Procedures ◽  
Daily Work ◽  
Validated Questionnaire ◽  
Standard Operating ◽  
Computer Based

Summary Objectives: With Standard Operating Procedures (SOPs) the conduction of clinical trials should be standardized so that the results are comparable and traceable. This aim can only be reached if the staff of clinical trials really uses the SOPs. Therefore, we conducted a survey to explore the use and usability of SOPs in clinical trials and to identify problems for their handling. Method: Standardized, validated questionnaire among the staff of all 12 coordination centers for clinical trials in Germany (n = 238), anonymous, descriptive analyses Results: A return rate of 58.8 % was reached. When having questions about the daily work 18.4% more likely ask a colleague than read the corresponding SOP (13.8%). For the relevance of SOPs 16.9% of the staff regard less than 10% of SOPs as relevant for them. Exclusively working with electronic SOPs are 4%. Conclusions: The results of the survey indicate that improvements for the handling of SOPs are necessary. They could be used to design a computer-based information retrieval system for SOPs to increase the easeof- use and usefulness of SOPs in clinical trials.

Web-Enabled System Design for Managing Clinical Information

2008 ◽  
pp. 1398-1406 ◽  
Author(s):  
Leonor Teixeira ◽  
Carlos Ferreira ◽  
Beatriz Sousa Santos
Keyword(s):  
Patient Care ◽  
System Design ◽  
Clinical Information ◽  
Healthcare Services ◽  
Information Resources ◽  
Care Process ◽  
Daily Work ◽  
Computer Based ◽  
Unusual Amount ◽  
Patient Care Process

Healthcare is characterized by a highly complex environment where the process of patient care requires an unusual amount of communication between different healthcare professionals (HCPs). For a better patient care, the various HCPs have to cooperate, a processed often called shared care (Garde & Knaup, 2006; Schabetsberger, Ammenwerth, Andreatta, Gratl, Haux, & Lechleitner, 2006). Nowadays, there is an increasing incorporation of a heterogeneous set of Information Systems (ISs)—paper-based and computer-based—on the daily work of HCPs, in order to retrieve information about patients (Coiera, 2003; Van-Bemmel & Musen, 1997). The complexity of the patient care process combined with the heterogeneity of the information resources leads to a paradigm of data redundancy in the healthcare services in general, and hemophilia care in particular.

Cell morphology, volume, and surface area determinations from multilevel contouring within HVEM micrographs of serial sections and whole-cell mounts

1987 ◽  
Vol 45 ◽  
pp. 588-589
Author(s):  
M. Marko ◽  
A. Leith ◽  
D. Parsons
Keyword(s):  
Surface Area ◽  
Electron Micrographs ◽  
Cell Morphology ◽  
Individual Variation ◽  
Serial Section ◽  
Stereo Pair ◽  
Complex Structures ◽  
Serial Sections ◽  
Surface Areas ◽  
Computer Based

The use of serial sections and computer-based 3-D reconstruction techniques affords an opportunity not only to visualize the shape and distribution of the structures being studied, but also to determine their volumes and surface areas. Up until now, this has been done using serial ultrathin sections.The serial-section approach differs from the stereo logical methods of Weibel in that it is based on the Information from a set of single, complete cells (or organelles) rather than on a random 2-dimensional sampling of a population of cells. Because of this, it can more easily provide absolute values of volume and surface area, especially for highly-complex structures. It also allows study of individual variation among the cells, and study of structures which occur only infrequently.We have developed a system for 3-D reconstruction of objects from stereo-pair electron micrographs of thick specimens.

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