Journal articles: 'Operation analysis'

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Zhang, Xue Hua. "Analysis of KATL Operation Simulated by TAAM." Applied Mechanics and Materials 713-715 (January 2015): 1601–4. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.1601.

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This objective of this research is to use Jeppesen’s Total Airspace and Airport Modelersimulator of airport and airspace operations (TAAM). TAAM has the capability to create models of airspace and airports, which makes it easy to planning, analysis, and making a decision. TAAM can help researchers evaluating the impact of changes to infrastructure, operations and schedules, after mimicking the airspace or airport into model.The simulation of this paper is going to imitate the operation of KATL in two different layouts with three different flight schedules based on a valid baseline model. In this case, the study is based on VFR operating condition, and operating towards west.

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Ollerton, J., and T. Hodgetts. "Operational Morbidity Analysis: Ophthalmic Presentations During Operation Telic." Journal of the Royal Army Medical Corps 156, no. 1 (March 1, 2010): 37–40. http://dx.doi.org/10.1136/jramc-156-01-08.

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Xu, MM, ZT Zhang, Z. Zhou, H. Zhang, S. Li, YM Liu, KS Jiang, and QH Chen. "Analysis Research on Operation Condition of Mining Crane." Journal of Physics: Conference Series 2181, no. 1 (January 1, 2022): 012049. http://dx.doi.org/10.1088/1742-6596/2181/1/012049.

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Abstract Mining cranes play an important role in the transportation and installation of underground equipment. Operating swing angles will seriously affect the operations safety. To ensure the operation safety of mining cranes, this paper firstly established a mathematical model of mining crane hoisting swing, and discussed affecting factors of the oscillation. Then, the orthogonal test method has been carried out, and the optimal and serious working conditions were obtained. Finally, the accuracy of the numerical results have been cross-verified on the ADAMS virtual platform. Results show that the swing trend increases with the increase of pitch acceleration, rotary acceleration and rope length, especially the rotary angular acceleration. The vibration variation trends of Matlab numerical results and ADAMS simulation results are consistent, which cross-verifies the two extreme operation conditions are valid and reliable. It provides a useful reference for the future research.

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V, Sundar C. Rakesh, Ramesh P, and Rajamurthy G. "An Experimental Analysis of Turning Operation in EN 31ALLOY." International Journal of Trend in Scientific Research and Development Volume-2, Issue-2 (February 28, 2018): 1498–502. http://dx.doi.org/10.31142/ijtsrd9633.

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Kim, Namdoo, Sungwook Choi, Jongryeol Jeong, Ram Vijayagopal, Kevin Stutenberg, and Aymeric Rousseau. "Vehicle Level Control Analysis for Voltec Powertrain." World Electric Vehicle Journal 9, no. 2 (August 2, 2018): 29. http://dx.doi.org/10.3390/wevj9020029.

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The next generation of the Volt vehicle with the new “Voltec” extended-range propulsion system was introduced into the market in 2016. The second-generation Volt’s powertrain architecture provides five modes of operation, including two electric vehicle operations and three extended-range operations. Vehicle testing was performed on a chassis dynamometer set within a thermal chamber at the Advanced Powertrain Research Facility at Argonne National Laboratory. The study first focused on assessing the improvement of the new Voltec system by comparing the system efficiency with the previous system. Second, control behavior and performance were analyzed under normal ambient temperature to understand the supervisory control strategy on the Voltec system based on the test data. The analysis focused on the engine on/off strategy, powertrain operation mode, energy management, and engine operating conditions. Third, test data from the control analysis were used to summarize the vehicle control logic.

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Idkham, M., M. Dhafir, Safrizal, and M. R. Aulia. "Workload Analysis during Operation Coconut Coir Peeler Operation." IOP Conference Series: Earth and Environmental Science 1116, no. 1 (December 1, 2022): 012035. http://dx.doi.org/10.1088/1755-1315/1116/1/012035.

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Abstract Almost all Acehnese still rely on the sundak (pointed blade) or machete to peel the coconut skin. The use of sundak has a high work risk even though the workload is relatively light. The sharp tip of the sundak can injure the operator when peeling the coconut skin. Therefore, the coconut skin peeler is designed with different types, namely the crank type, tipping type, and scissors type. The operator’s workload analysis is carried out to be useful for developing the design of the coconut peeler so that it is hoped that the tool and method of peeling coconut skin is safer, greater cushty and greater effective. A workload analysis was performed by calculating the heart rate of three operators operating a coconut peeler. The workloads analyzed are qualitative and quantitative workloads. The results of the workload analysis show that the use of sundak is still classified as light work with an average IRHR of 1.15 and the required energy consumption of 2.62 kcal/kg.hour. Meanwhile, scissors type tools are also classified as light work with an average IRHR value of 1.25 with an energy consumption rate of 2.93 kcal/kg.hour. The use of crank type tools is still classified as light work with an average IRHR of 1.23 and an energy consumption rate of 2.84 kcal/kg.hour. The use of a tipping tool is middle class workload where the average IRHR is 1.28 and the power consumption rate is 3.09 kcal/kg.hour. For the use of a machete, it is classified as a job with a moderate workload where the average IRHR value is 1.29 with the required energy consumption rate of 3.25 kcal/kg.hour. The high workload of the operator is influenced by the habit of the operator in operating a tool.

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Kochan, Andrzej, Emilia Koper, and Paweł Wontorski. "Automatic train operation – requirements analysis." WUT Journal of Transportation Engineering 121 (June 1, 2018): 161–70. http://dx.doi.org/10.5604/01.3001.0014.4576.

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This article discusses the analysis of the process of automatic train operation. The scope of the analyzed process is not narrowed to the train itself. It covers the tasks carried out at the various operational levels of the system responsible for operating the railway traffic. The authors present the tasks in the field of railway traffic management and railway traffic control and train operation, carried respectively by the dispatcher, signalman and the train driver, which can be performed automatically, i.e. without human intervention.

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Simões, Danilo, Ricardo Hideaki Miyajima, Rodrigo Petrongari Tonin, Paulo Torres Fenner, and Gislaine Cristina Batistela. "INCORPORATION OF UNCERTAINTY IN TECHNICAL AND ECONOMIC ANALYSIS OF A FELLER-BUNCHER." FLORESTA 48, no. 3 (June 14, 2018): 403. http://dx.doi.org/10.5380/rf.v48i3.56404.

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The constant technical and economic analysis of timber harvesting operations is essential and determining, due to the monetary magnitude. Traditionally, these analyses are conducted deterministically, which does not allow obtaining values with probabilities of occurrence. Considering this issue, stochastic models were built in order to analyze the behavior of probabilistic production cost in felling operations with feller-buncher, through the Monte Carlo method. The study was conducted in the Central-West region of the state of São Paulo in a forest of Eucalyptus sp., with six years of age, planted in 3 x 2 m spacing. Technical analysis was based on the study of time and movements, which determined the effective productivity and economy in the hourly operating cost of the feller-buncher and in the production costs of the operation. Due to uncertainties, probability distributions were assigned to these results, which identified the most relevant variables and quantified the probabilities of the production cost. The results demonstrated that the fuel cost had a statistically significant strong positive correlation coefficient ( = 0.91) (p-value < 0.01). The hourly cost, consequently, was directly proportional to the production cost of the operation. The production cost of the operation in flat relief was 18% lower than the production cost of the operation in undulating relief.

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Iranzi, Joseph, Hanam Son, Youngsoo Lee, and Jihoon Wang. "A Nodal Analysis Based Monitoring of an Electric Submersible Pump Operation in Multiphase Flow." Applied Sciences 12, no. 6 (March 9, 2022): 2825. http://dx.doi.org/10.3390/app12062825.

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Electrical submersible pump (ESP) operation is compromised by free gas, resulting in premature pump failure and production losses in new wells. It is essential to detect the onset of abnormal operations. We develop a model that predicts abnormal ESP operation when the free gas level increases in the pump. The model compares operation parameters with the parameters of normal operating ranges; it shuts down the ESP when necessary. We used a Schlumberger PIPESIM software (version 2017.01) to perform nodal analysis technique; we tested the model using the other multiphase correlation model and field case studies (where the gas problem in ESP was reported). We employ a homogenous model to calculate the differential pump pressures at various gas volume fractions. Nodal analysis of the intake and discharge point predicted the commencement of abnormal ESP conditions and the associated parameters (critical gas fraction, minimum operating pump intake pressure, and pump discharge pressure). The model results were similar to other surging correlation models (e.g., Romero, Dunbar, Turpin, Cirilo, and Zhou models); they were also identical to field case studies. We identify three performance stability phases when an ESP is exposed to free gas. These are the normal and abnormal operating ranges, as well as the ESP shutdown condition. Modeling permits careful monitoring of ESP operations that can be compromised by free gas.

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V, Rakesh, Ramesh P, and Sundar C. Rajamurthy G. "An Experimental Analysis of Turning Operation in SAE E52100 Alloy." International Journal of Trend in Scientific Research and Development Volume-2, Issue-2 (February 28, 2018): 1618–22. http://dx.doi.org/10.31142/ijtsrd9631.

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Mahapatro, Sunil Kumar. "Analysis Of Power Transients In Transmission Devices For Stable Operation." International Journal of Scientific Research 1, no. 3 (June 1, 2012): 43–45. http://dx.doi.org/10.15373/22778179/aug2012/16.

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NIZIŃSKI, Stanisław, and Włodzimierz KUPICZ. "ANALYSIS OF MILITARY MOTOR VEHICLES OPERATION PROCESSES." Scientific Journal of the Military University of Land Forces 159, no. 1 (January 3, 2011): 216–23. http://dx.doi.org/10.5604/01.3001.0002.2914.

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An analysis and assessment of specific problems of military motor vehicles operation have been made, in particular:types of operating methods;→vehicles operation in NATO;→quality, reliability, and structure of vehicles in the Polish Armed Forces;→organisation and implementation of operation processes;→competence level of operational personnel.In addition, general issues related to vehicles use have been formulated, including the impact of vehicles reliability on combat readiness of a military unit and factors affecting the vehicles technical readiness coefficient. An assessment has been made of the effectiveness of the vehicles operation system.

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Bakti Tarigan, Rindu, and Ktut Mangani. "OPERATIONAL RISK ANALYSIS OF NETWORK OPERATION CENTER DIVISION PT. IO." Annals of Marketing Management and Economics 4, no. 1 (June 20, 2018): 115–29. http://dx.doi.org/10.22630/amme.2018.4.1.9.

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This research is try to identify the operational risks in Network Operation Center division of PT. IO; measure and evaluate the risks, as well as make control and response measures to operational risks. The research method was a survey and Focus Group Discussion, by using a questionnaire as a research tool. The sample selection is done by Quota sampling and Convenience sampling methods to the employees in Division Network Operating Center PT.IO, which has had experience of at least 5 years. The results showed that as many as 40 out of 49 identified risks have been handled properly. Against these risks, the company have 35 standard operating procedure documents (SOPs) as a mitigation of those risks. Nonetheless, efforts are needed to improve and update mitigation strategies because of the possibility of new risks and increased risk levels. It becomes a suggestion for further research as well as suggestion to undertake further research on mitigation at the division and director level.

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Ollerton, J., H. T, and R. R. "Operational Morbidity Analysis of Soft Tissue Injuries During Operation Telic." Journal of the Royal Army Medical Corps 153, no. 4 (December 1, 2007): 263–65. http://dx.doi.org/10.1136/jramc-153-04-08.

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Chen, Kun, Xin Wei, Hui Li, Hao Lin, and Faisal Khan. "Operational risk analysis of blowout scenario in offshore drilling operation." Process Safety and Environmental Protection 149 (May 2021): 422–31. http://dx.doi.org/10.1016/j.psep.2020.11.010.

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Tiwari, G., V. Prasad, S. N. Shukla, and V. K. Patel. "Hydrodynamic analysis of a low head prototype Francis turbine for establishing an optimum operating regime using CFD." Journal of Mechanical Engineering and Sciences 14, no. 2 (June 16, 2020): 6625–41. http://dx.doi.org/10.15282/jmes.14.2.2020.07.0519.

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Hydraulic turbines need to operate at regimes other than designed ones. Off-design functioning of these turbines yields an inefficient and uneconomical operation of hydro projects. Performance and energy losses at different possible operating conditions need to be evaluated before finalizing the design of water turbines for satisfactory operations. Moreover, hydraulic turbines are unique machines designed for unique set of operating conditions and cost a huge percentage of the overall cost of the project. This work is compiled with twofold objectives; derivation of complete performance characteristics of a 48m head prototype Francis turbine in order to establish an optimum operating regime and, determination and analyses of head loss at different components of the turbine. Steady state flow simulations for four different load operations (60%, 80%, 100% and 120%) have been carried out using computational fluid dynamics. It is found that the optimum regime of operation lies within the speed factor range of 0.412-0.48 along with discharge factor range of 0.27-0.329 and maximum efficiency is obtained as 90.64% at full load operation. Maximum head loss in critical components of the turbine such as runner and draft tube is found as 12.7% at speed factor of 0.568 and 26.31% at 0.202 speed factor respectively. Also, the maximum total head loss in all the components is found as 47.8% at 60% load and 0.609 speed factor. It is concluded that the functioning of the turbine at higher speed factors is more detrimental than that at lower speed factors. Requirement of performance improvement at off-design conditions (especially at 60% load operation) is also suggested in order to widen the range of optimum operating regime. Obtained computational results are validated with experimental results and a strong agreement is found between the two.

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Zezekalo, Ivan, Svetlana Bukhkalo, and Iryna Ivanytska. "PRODUCTION REDUCTION ANALYSIS AND WELL OPERATION ANALYSIS." Bulletin of the National Technical University "KhPI". Series: Innovation researches in students’ scientific work, no. 2 (December 16, 2021): 92–98. http://dx.doi.org/10.20998/2220-4784.2021.02.12.

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The method of Arps fall curve as an effective method that allows reliable and efficient prediction of well flow, a necessary parameter for optimal and correct choice of well operation is considered in the article. Forecasting the flow rate of wells in fields with high-viscosity oil stocks is one of the most difficult tasks in the development of oil fields. It is proved that the use of the Arps method simplifies this task, as it gives the correct results quickly and easily. The importance of the choice of well operation methods is analyzed. It has been proven that the analysis of reduced production is a means of identifying productivity problems in wells to assess their future productivity and expected service life. The use of the Harmony Enterprise platform is designed to analyze the performance of oil and gas wells and inventory assessment, to create common corporate work processes, use technical knowledge and exchange interpretations, which allows you to identify promising assets, evaluation and development strategy. The results of this work are very important and necessary for further research and analysis of the fall in production and analysis of the well.

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Garcia, Ricardo Luiz Santos, Bruna Meyer R. de Matos, Omar Féres, and José Joaquim Ribeiro da Rocha. "Surgical treatment of Chagas megacolon. Critical analysis of outcome in operative methods." Acta Cirurgica Brasileira 23, suppl 1 (2008): 83–92. http://dx.doi.org/10.1590/s0102-86502008000700015.

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PURPOSE: Surgical treatment of chagasic megacolon has suffered innumerable transformations over the years. Poor knowledge of the disease physiopathology is one of the reasons. METHODS: From January 1977 to December 2003, 430 patients were submitted to surgical treatment for chagasic megacolon. Of these procedures, 351 were elective and 79 emergency operations carried out at the University Hospital of Ribeirão Preto. Four elective operations, most frequently used, should be singled out: anterior rectosigmoidectomy (52.71%), left hemicolectomy (18.23%), Duhamel-Haddad operation(15.95%), and total colectomy (5.98%). From the 79 exploratory laparotomies performed on an emergency basis, 53 (67.09%) required intestinal resection. From the 430 patients operated upon, 268 (62.33%) progressed without recurrence of intestinal constipation, and 71 (15.51%) had a recurrence. RESULTS AND DISCUSSION: Based on the data collected, left hemicolectomy had the highest constipation recurrence rate compared to other operating procedures; anterior retosigmoidectomy had less complication episodes and a larger recurrence of intestinal constipation in comparison to the Duhamel-Haddad operation. Emergency operations, mainly for the treatment of volvulus and fecaloma, presented high morbidity and mortality and required extensive intestinal resections, stomas and reoperations.

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Putra, Zainal, and Muzakir Muzakir. "Competitive Environment Analysis in Global Retail Companies Operation Strategy: A Data Envelopment Analysis (DEA) Based Approach." AFEBI Management and Business Review 5, no. 1 (June 17, 2020): 16. http://dx.doi.org/10.47312/ambr.v5i1.286.

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This research aims to find out the most competitive retail company operating in current global market based on the perspective of efficiency. A well-performed company is the company that is efficient in its operations. By using Data Envelopment Analysis (DEA) approach, this research differs from prior research because we used multivariable inputs, namely: asset, operational expense and the number of employees. The output variables used in this research are: total revenue, net profit, return on equity (ROE), return on assets (ROA), return on investment (ROI), dividend yield ratio and asset turnover ratio. The analysis results shows that six retail companies are “efficient” in its operation (efficiency score of 1.00), namely: Carrefour, Costco, Kroger Company, Home Depot Inc, JD.com Inc Adr and Alibaba Group Holdings Ltd ADR. Therefore, these companies are considered the most competitive in its operation strategy in the current global market, whereas there are four retail companies falls into category of “inefficient” (efficiency score < 1.00), namely: Walmart, Amazon.com Inc, Tesco PLC and Walgreens Boots Alliance Inc.

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Putra, Zainal, and Muzakir Muzakir. "Competitive Environment Analysis in Global Retail Companies Operation Strategy: A Data Envelopment Analysis (DEA) Based Approach." AFEBI Management and Business Review 5, no. 01 (November 17, 2020): 16. http://dx.doi.org/10.47312/ambr.v4i02.286.

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This research aims to find out the most competitive retail company operating in current global market based on the perspective of efficiency. A well-performed company is the company that is efficient in its operations. By using Data Envelopment Analysis (DEA) approach, this research differs from prior research because we used multivariable inputs, namely: asset, operational expense and the number of employees. The output variables used in this research are: total revenue, net profit, return on equity (ROE), return on assets (ROA), return on investment (ROI), dividend yield ratio and asset turnover ratio. The analysis results shows that six retail companies are “efficient” in its operation (efficiency score of 1.00), namely: Carrefour, Costco, Kroger Company, Home Depot Inc, JD.com Inc Adr and Alibaba Group Holdings Ltd ADR. Therefore, these companies are considered the most competitive in its operation strategy in the current global market, whereas there are four retail companies falls into category of “inefficient” (efficiency score < 1.00), namely: Walmart, Amazon.com Inc, Tesco PLC and Walgreens Boots Alliance Inc.

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Hafezi, Mohammad Hesam, Amiruddin Ismail, Ramez A. Al-Mansob, and Omran Kohzadi Seifabad. "Comparative Analysis on Bus Operation Duration Light and Rush Traffic Period." International Journal of Engineering and Technology 4, no. 1 (2012): 97–102. http://dx.doi.org/10.7763/ijet.2012.v4.326.

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Lysetsky, Yu M., and S. I. Bobrov. "Security Operation System." Mathematical machines and systems 2 (2020): 51–59. http://dx.doi.org/10.34121/1028-9763-2020-2-51-59.

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The number of cyber attacks and cyber crimes grows every year. This is why there constantly appear new products, technologies and tools for protection against cyber threats. Security Operation Center (SOC) is one of the most up-to-date and reliable cybersecurity tools of enterprise level. There are already several SOCs in Ukraine in government and law enforcement bodies and there is strong interest to their implemen-tation shown by organizations and enterprises of practically every industry of national economy. SOC al-lows monitoring, detection and quick response to incidents which is necessary to reduce damage and fi-nancial losses caused by such incidents. Implementation of SOC requires significant expenses which can be afforded only by some organizations and enterprises. This is why creation of similar but more affordable tool is very urgent. The paper describes Security Operation System (SOS) designed for effective protection against cyber threats and cyber attacks, which collects, normalizes, correlates and analyses events in or-ganization’s IT infrastructure. Main advantage of this system is ability to receive information on events from different sources and their correlation which is important as today attacks can only be discovered on the basis of combination of events in the IT infrastructure. Another advantage of SOS is ability to add new correlation rules into analytical module which can be based on the unique experience of system exploita-tion, analysis of new attacks against organization’s IT infrastructure or borrowing such correlation rules from other organizations.

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Duckstein, L., A. Tecle, H. P. Nachnebel, and B. F. Hobbs. "Multicriterion Analysis of Hydropower Operation." Journal of Energy Engineering 115, no. 3 (December 1989): 132–53. http://dx.doi.org/10.1061/(asce)0733-9402(1989)115:3(132).

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Papírník, Luboš. "Analysis of city buses operation." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 57, no. 5 (2009): 235–42. http://dx.doi.org/10.11118/actaun200957050235.

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This paper deals with analysis of city buses operation. This analysis is focused on the energy balance of propulsion system of these buses. The energy balance gives an overview about necessary amount of energy for city buses in pure city operation. The operation of city buses is divided for this analysis into three basic modes: stop state, drive and deceleration. The fleet of the same 19 city buses was chosen for collection of all operation data. These city buses are located in one city. The buses were changing all bus routes and were driven by all bus drivers. These conditions are necessary for elimination of bus route topology and bus driver behaviour. The required operation data were saved into engines and transmissions control units. The saved data were uploaded from control units for data processing. The aim of the analysis is determination of the energy for each drive mode. The energy for individual mode gives an overview about possible energy savings when hybrid drive system is used for these buses. The energy balance is groundwork for correct design of hybrid drive system and for hybrid drive system control.

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Loaiciga, Hugo A., and Miguel A. Mariño. "Risk Analysis for Reservoir Operation." Water Resources Research 22, no. 4 (April 1986): 483–88. http://dx.doi.org/10.1029/wr022i004p00483.

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Lu, Jie, and Xin Fa Tang. "Analysis on VSC’ Efficient Operation." MATEC Web of Conferences 63 (2016): 04035. http://dx.doi.org/10.1051/matecconf/20166304035.

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Bitran, Yigal, Zeev Zalevsky, David Mendlovic, and Rainer G. Dorsch. "Fractional correlation operation: performance analysis." Applied Optics 35, no. 2 (January 10, 1996): 297. http://dx.doi.org/10.1364/ao.35.000297.

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Gao, You Shan, and Au Hong Wang. "Energy Consumption and Emissions Analysis of Natural Gas Exploitation." Advanced Materials Research 189-193 (February 2011): 316–20. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.316.

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Nowadays, remarkable immolations and charges are taking place deeply and continuously in the marketing area the enterprise brand operation is a strategic problem of operation which relates to the enterprise’s life. This article elaborated the creative meaning of the running of the business enterprise, and it emphasizes from establishing the brand operating, erecting the key of the brand operation, enhancing the key of the brand operation to carrying on the analysis of the brand value accurately and so on, in which it has a discuss about the problem of the design and the practice of the enterprise brand operation.

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Huang, Jin, Changwang Shan, Kang Dong, Yang Zhang, and Hao Yu. "Analysis and Design of Integrated Intelligent Anti-error System for Substation." Journal of Physics: Conference Series 2427, no. 1 (February 1, 2023): 012040. http://dx.doi.org/10.1088/1742-6596/2427/1/012040.

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Abstract A new comprehensive intelligent anti-error system that meets the requirements of smart substations is proposed. This new system can overcome the problem that the microcomputer anti-error system lacks operation error prevention technology for secondary equipment and also lacks operation and maintenance operations under the integrated control operation mode. Firstly, this paper analyzes the characteristics of the anti-error system, and the principle function of the judgment model. And then, an anti-misoperation process system is established for work scenarios such as information collection and monitoring, remote control operation error prevention, sequential control operation error prevention, local operation error prevention, secondary equipment, operation, and maintenance. This paper finally builds a realtime online anti-error system that can be intelligently analyzed for the whole business process to ensure the safety of intelligent substation equipment operation.

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Jie, Chen. "Analysis of Operation Room in Laparoscopic Colorectal Cancer Radical Operation." Advanced Emergency Medicine 1 (August 19, 2012): 4. http://dx.doi.org/10.18686/aem.v1i1.2.

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Objective: To analyze the effect of operation room combined with laparoscopic colorectal cancer radical resection, for clinical reference. Method: From July 2011 to June 2012 in our hospital, 62 cases of laparoscopic colorectal cancer radical resection as the observation group, which treated with optimize operation room nursing. In the same period, 58 patients were treated with routine nursing, and the clinical data were retrospectively analyzed, and the difference of post-operative complications and nursing satisfaction rate of the two groups were compared. Results: Compared with the control group, the incidence of post-operative complications was significantly lower in the observation group, and nursing quality satisfaction rate was higher, there was significant difference between the two groups (p < 0.05). Conclusion: Quality of operation room nursing care reduces complications of laparoscopic colorectal cancer resection, improve quality of care, reduce patient’s pain, and it is worth to be promoted in operation room nursing work in the future.

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Kim, Jong-Gyeum. "Characteristics Analysis of 50 ㏋ Induction Motor Operation and Generator Operation." TRANSACTION OF THE KOREAN INSTITUTE OF ELECTRICAL ENGINEERS P 71, no. 3 (September 30, 2022): 123–28. http://dx.doi.org/10.5370/kieep.2022.71.3.123.

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Oka, Hirokazu, Takeshi Miura, and Sin-Ei Takahasi. "Semigroup operations which are distributive over a given semigroup operation on positive real numbers." Acta Scientiarum Mathematicarum 86, no. 34 (2020): 493–502. http://dx.doi.org/10.14232/actasm-020-116-1.

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Marzouki, Mohamed Amine, Bernd Souvignier, and Massimo Nespolo. "Crystallographic orbits analysis of staurolite twins." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C1113. http://dx.doi.org/10.1107/s205327331408886x.

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Staurolite is an enigmatic mineral characterized by a high degree of pseudo-symmetry, which frequently occurs twinned. It gives two twins with different occurrence frequency, the 90° or Greek cross (lower frequency) and the 60° or Saint Andrews cross (higher frequency). To date no explanation has been found for their different occurrence frequency. We have analyzed the structure of staurolite in terms of the pseudo-eigensymmetry of the crystallographic orbits building this structure [1]. The union of the crystallographic orbits based on oxygen atoms has a pseudo-cubic eigensymmetry which contains the twin operations of both twins: the operations restore, with good approximation, the whole set of oxygen atoms, which justifies the high frequency of twinning of this mineral but does not discriminate between the two twins. On the other hand, a subset of the tetrahedral cations has a pseudo-eigensymmetry which contains the twin operation of the Saint Andrews cross, but not that of the Greek cross. Also, a subset of the octahedral cations has a pseudo-eigensymmetry which contains the twin operation of the Greek cross and a larger subset has an eigensymmetry which contains the twin operation of the Saint Andrews. The substructure approximately restored by the twin operation is thus more extensive for the Saint Andrews cross, which justifies its higher occurrence frequency.

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Neighbour, M. R., P. Bailey, M. Hawthorn, C. Lensing, H. Robson, S. Smith, and B. Zimmerman. "Providing operational analysis to a peace support operation: the Kosovo experience." Journal of the Operational Research Society 53, no. 5 (May 2002): 523–43. http://dx.doi.org/10.1057/palgrave.jors.2601328.

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Castella, Annalisa, Lorena Charrier, Valeria Di Legami, Francesca Pastorino, Enzo Carlo Farina, Pier Angelo Argentero, and Carla Maria Zotti. "Surgical Site Infection Surveillance Analysis of Adherence to Recommendations for Routine Infection Control Practices." Infection Control & Hospital Epidemiology 27, no. 08 (August 2006): 835–40. http://dx.doi.org/10.1086/506396.

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Objective.To evaluate the application of surgical site infection control procedures in general surgery departments in hospitals in the Piemonte region of Italy.Design.The descriptive study entailed 1 week of observation in the general surgery departments and 1 week of observation in the operating rooms of 49 hospitals in Piemonte; the survey was conducted in 2003.Methods.Data collection forms were designed to record information about presurgical patient preparation (form 1) and infection control practices routinely used by surgical teams (form 2).Results.A total of 856 patients were observed; 88% of operations were surgical wound class I or II; 70.6% of patients had hair removed, 28.8% showered the day before the operation; antimicrobial prophylaxis was administered in 63.3% of cases (68.4% on induction of anesthesia and 26% on the day of the operation) and was continued into the postoperative period in 43% of cases. A total of 799 operations were observed; the mean number of healthcare personnel in the operating room was 6; doors were opened an average of 12 times during an operation; 88% of the surgical team members wore a cap/hood and mask correctly; 25% of surgeons and 41% of instrument nurses wore an eye shield; preoperative hand and forearm scrubbing technique was correct in 78% of cases (surgeons, 74.6%; instrument nurses, 86.6%; and anesthesiologists, 73%).Conclusions.A comparison between the survey data and the international recommendations for SSI prevention highlighted practices that could be improved with corrective interventions. The study provided an opportunity for sharing feedback on appropriate data with healthcare personnel and was an effective instrument to audit infection control practices.

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Xin, Yang, and Yinning He. "Challenges and Countermeasures Faced by Enterprise Economic Operation Analysis in the Big Data Era." E3S Web of Conferences 251 (2021): 01049. http://dx.doi.org/10.1051/e3sconf/202125101049.

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The analysis of enterprise economic operation is mainly to collect, integrate, analyze and store information on the economic activities of the enterprise, so as to realize the standardization and management of the overall economic activities of the enterprise. In the era of big data, the analysis of corporate economic operations has also changed. In short, the big data environment has changed the corporate economic analysis and management mechanism, and has changed the collection of corporate operating economic data. It also has multiple impacts on data analysis and changed the overall structure of corporate economic analysis. This article will briefly discuss the challenges and countermeasures facing enterprise economic operation analysis in the era of big data, hoping to provide a reference for enterprise economic management.

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Shin, Ji-Hyun, Yoon-Bok Seong, Yong-In Kim, and Young-Hum Cho. "Development of Changeover Operating Method Based on Performance Prediction of Hybrid Geothermal Heat Pump Systems through Field Test and Numerical Analysis." Energies 13, no. 20 (October 13, 2020): 5333. http://dx.doi.org/10.3390/en13205333.

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The installation and operation of geothermal systems increased due to the expectation of good cooling and heating performance due to stable heat source temperatures. In actual geothermal system operations, heat source temperature rises or falls due to an imbalance of heating and cooling energy usage. Problems of source side temperature result in reduced geothermal system performance. The purpose of this study is to develop hybrid geothermal system operation technology to stabilize temperature and improve system performance by utilizing auxiliary heat source system. The auxiliary heat source system is operated by comparing the performance when operating the geothermal heat pump system alone and the performance when operating the hybrid geothermal heat pump system. The performance of a hybrid geothermal system is determined by the circulating water temperature of the geothermal system and the circulating water temperature of the auxiliary heat source system. Hybrid geothermal heat pump system performance is predicted through numerical analysis and collection of hybrid geothermal system performance data at various temperature ranges through field test. An operating method was developed using the predicted performance as the changeover operating point of the hybrid geothermal heat pump system. When applying the development and operation technology, it handled about 11% more load than the existing geothermal system operation. The addition of an auxiliary heat source increases the initial investment cost compared to the existing geothermal system, but decreases energy consumption, confirming that the initial investment cost of 15.3 years is recovered.

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Wei, Wenlan, Hao Qu, Jiarui Cheng, Wenyuan Wang, and Maliang Wang. "Digital twin and contact analysis of ultra-long distance coiled tubing operation structures." Digital Twin 3 (January 5, 2023): 1. http://dx.doi.org/10.12688/digitaltwin.17732.1.

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Background: Coiled tubing operation is a high-quality operation method that considers both cost and efficiency in current oil and gas well operations. There is a significant difference between the calculation and prediction before operation and the actual operation. The reason is that the complex wellbore trajectory makes it difficult to evaluate the contact state between coiled tubing and wellbore, resulting in a significant error in the pipe string mechanics calculation and analysis. Methods: Aiming at the contact problem between coiled tubing and wellbore in the process of coiled tubing operation, the digital twin unit of coiled tubing and wellbore is established in this study. By constructing a feedback correction collision contact algorithm, the contact state of coiled tubing and casing under different three-dimensional trajectory models was simulated. Results: The research results show that the digital twin coiled tubing and contact algorithm can effectively predict the contact state of coiled tubing operations; the verification model shows that the contact algorithm can accurately analyze the contact state of different well trajectories. Conclusions: The digital twin of the coiled tubing operation structure and its contact algorithm can effectively solve the problem of deterministic friction state in the process of mechanical calculation of the tubing string, which has important guiding significance and engineering value for the mechanical calculation and operation safety analysis of coiled tubing operation.

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McCarl, Bruce A., M. Edward Rister, Ruby Ward, Charles R. Long, Dean McCorkle, Houshmand Ziari, J. Richard Conner, Allen W. Sturdivant, and Troy N. Thompson. "Strategie Agribusiness Operation Realignment in the Texas Prison System." Journal of Agricultural and Applied Economics 32, no. 1 (April 2000): 145–58. http://dx.doi.org/10.1017/s1074070800027899.

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AbstractMathematical programming-based systems analysis is used to examine the consequences of alternative operation configuration for the agricultural operations within the Texas Department of Criminal Justice. Continuation versus elimination of the total operation as well as individual operating departments are considered. Methodology includes a firm systems operation model combined with capital budgeting and an integer programming based investment model. Results indicate the resources realize a positive return as a whole, but some enterprises are not using resources profitably. The integer investment model is found to be superior for investigating whether to continue multiple interrelated enterprises.

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Anggoro, Rully Tri. "EFFECT OF OPERATING PATTERNS ON THE EFFECTIVENESS OF LAW ENFORCEMENT IN THE SEA." JOURNAL ASRO 10, no. 3 (October 31, 2019): 147. http://dx.doi.org/10.37875/asro.v10i3.175.

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Indonesian Navy as a Security Task Force at Sea tasked with arranging marine security operations seeks to reduce the crime rate at sea. However, in carrying out marine operations there are still many illegal fishing, illegal logging, pollution, narcotics smuggling, piracy, people smuggling and sea accidents at various points in the sea. Koarmada II. Koarmada II in supporting the demand for operations that are under the command of its control, will be adjusted to the readiness of the existing elements, because not all elements below are in a condition ready for operation, there are several elements that must carry out maintenance and repair. Therefore we need the right operating pattern strategy in increasing the effectiveness of law enforcement at sea. The purpose of this research is to find out the right Indonesian Navy Operation Pattern in increasing the effectiveness of law enforcement at sea and the effect of the Operational Pattern on the effectiveness of sea law enforcement carried out by Indonesian Navy. Using the multiple regression analysis method, the results show that the Indonesian Navy Operational Pattern consisting of Patrol Operation Pattern (X1), Standby Operating Pattern (X2) and Air Maritime Patrol Operation Pattern (X3) has a real influence on the effectiveness of law enforcement at sea (Y ). The Air Maritime Patrol Operation Pattern (X3) has the greatest coefficient in influencing the Effectiveness Level of law enforcement at sea due to the use of the Air Maritime Patrol Operation Pattern so that it can explore the area very efficiently and effectively, thereby increasing opportunities to find violations of Law at sea.Keywords: Operational Patterns, Effectiveness of Law Enforcement, Multiple Regression analysis.

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Wang, Cheng, Jianying Wang, Xiongming Lai, Bineng Zhong, Xiangyu Luo, Hui Ying, Guirong Yan, Weibin Chen, and Jing Li. "Operation modal analysis following fast independent component analysis." International Journal of Applied Electromagnetics and Mechanics 52, no. 1-2 (December 29, 2016): 103–11. http://dx.doi.org/10.3233/jae-162201.

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Kong, Chan, Yong Sun, Hongxi Zhang, and Yongjiang Shi. "Mathematical Analysis of Optimal Operating Conditions in Heating Systems." Mathematical Problems in Engineering 2019 (May 6, 2019): 1–16. http://dx.doi.org/10.1155/2019/4264562.

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With changes in the outdoor air temperature, the heat consumption of buildings also changes. Timely adjustment of the heating systems to ensure optimal operating conditions is extremely significant to save energy. In this study, the operation conditions of a heating system were analyzed numerically, and the existence, uniqueness, and stability of the optimal operation conditions of the heating system were proved. An operation optimization model that could obtain the optimal operation conditions was also established, and the correctness of the model was verified experimentally. Experimental results showed that when the flow rate was 0.606 m3/h, the supply water temperature was 67.13°C, water return temperature was 65.90°C, and the pump consumed the least amount of electricity. The experimental results and model calculation results showed that the operating cost is lower when the system flow rate is low and the supply water temperature is high under the same heat dissipation and indoor temperature.

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Javed, Mubashar, Shumaila Javeed, Jihad Ahmad, Kifayat Ullah, and Lemnaouar Zedam. "Approach to Multiattribute Decision-Making Problems Based on Neutrality Aggregation Operators of Picture Fuzzy Information." Journal of Function Spaces 2022 (April 1, 2022): 1–16. http://dx.doi.org/10.1155/2022/2762067.

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This manuscript is aimed at developing some novel operational laws named scalar neutrality operation and neutrality addition on picture fuzzy numbers (PFNs). The main focus of this work is to involve the neutral behaviour of the experts towards the priorities of entities where it presents equal degrees to independent membership functions. Moreover, based on these operations, some novel aggregation operators are established to aggregate the different priorities of experts. Some useful relations and characteristics are examined thoroughly. Lastly, the multiattribute group decision-making algorithm in accordance with the suggested operation is illustrated and examined a case study in order to choose a suitable mining company for a mining project along with several numerical examples. The advantages, as well as the superiority of the suggested approach, are exhibited by comparing the results with a few existing methods.

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Xingkai, Wang, Tang Yijin, and Li Hongze. "Analysis of Operation Rules of Provincial Peak Shaving Auxiliary Service Market." E3S Web of Conferences 236 (2021): 04013. http://dx.doi.org/10.1051/e3sconf/202123604013.

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In order to implement the requirements of the power system reform, to ensure the safety, stability and economic operation of the power system, and to promote the consumption of new energy, all provinces in China have built the peak-control auxiliary service market, and explore the establishment of a new mechanism for sharing and sharing of peak-control auxiliary services. Based on the operating rules of the peaking auxiliary service market in Xinjiang, Shanxi, Gansu, Fujian, Jiangsu, Jiangxi, Northeast, Anhui, Ningxia, Shanghai, Shandong and other places, the author compares and evaluates the key content of the market operating rules from four aspects: market members and their responsibilities, deep peaking transaction details, emergency start-stop peaking transaction details, and measurement and settlement, and also finds a direction for the provinces to revise or adjust the rules of peaking auxiliary services in the future for the reference of power grid dispatching, power plant operations and other departments, in order to improve the understanding of relevant personnel of the peaking auxiliary service market.

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Shin, Young Keun, Tae Hyung Kim, Gwang Hee Kim, and Seung Woo Han. "Partial Simulation Model (PSM) Development for Productivity Analysis on Curtain Wall Operations in High-Rise Buildings." Applied Mechanics and Materials 174-177 (May 2012): 1942–45. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1942.

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High-rise building construction demands precise planning prior to actual operation. High-rise building construction has widely been planned in urban area. Curtain wall operation is one of important and fundamental operations in high-rise building construction. Curtain wall operation is composed of various activities. Precise planning is required for the effective management of such operation. Construction simulation technique has been considered an appropriate methodology for estimating construction performance which is required for the effective management of the project. However, simulation technique revealed serious limitations. Simulation technique has difficulty in preliminary modeling and application of changed conditions. This paper suggests a preliminary study for the research that overcomes traditional simulation technique limitations focusing on curtain wall operations.

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Fernanda, Sherillyana, Aristi Dian Purnama Fitri, and Indradi Setiyanto. "CATCH ANALYSIS AT THE TIME OF FISHING OPERATIONS AND IMMERSING SURFACE GILL NETS IN SEMARANG WATERS, CENTRAL JAVA, INDONESIA." International Journal of Innovative Research in Advanced Engineering 8, no. 7 (July 30, 2021): 182–89. http://dx.doi.org/10.26562/ijirae.2021.v0807.007.

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The purpose of this study was to catch analysis at the time of fishing operations and immersing surface gill nets in Semarang Waters, Central Java, Indonesia. The research was carried out in March 2021. The research method was experimental fishing. The treatment variables included the morning operating time with 30 minutes and 60 minutes of immersion time, and the evening operating time with 30 minutes and 60 minutes of soaking. All treatments were repeated 7 times each. Data analysis using the Two Way Anova test. The composition of the catch obtained was Milkfish (Chanos Chanos), Long Jawed Mackerel (Rastrelliger sp.), Anchovy Fish (Mystacoleucus padangesis), Threadfin (Eleutheronema tetradactylum), Queen Fish (Scomberoides lysan), Grouper Fish (Epinephelus sp.), Pony Fish (Leiognatus tauvina), Emperors (Lethrinus sp.), Silver Pennah Croaker (Aspericovina jubata), Black Pomfret (Formio niger), Torpedo Scad (Megalaspis cordyla), Spanish Mackerel Fish (Scomberomorus sp.), John’s Snapper (Lutjanidae sp.), Streaked Spinefoot (Sinagus sp.), Tholi Shad (Tenualosa macrura), and Tongue fish (Cynoglossus lingua). The most catches (biomass) were treated in the morning operating time with 60 minutes of immersion. Data analysis showed that there was a significant effect on the best catch with fishing operation time in the morning (sign 0.05) and immersing time for 60 minutes (sign 0.05). There is no significance between the fishing operation time and the immersing time. The most catches (biomass) were treated in the morning operating time with 60 minutes of immersion. Data analysis showed that there was a significant effect on the best catch with fishing operation time in the morning (sign 0.05) and immersing time for 60 minutes (sign 0.05). There is no significance between the fishing operation time and the immersing time.

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Hrnčiar, Michal. "Tactical Variables – A Tool for Mission Analysis." International conference KNOWLEDGE-BASED ORGANIZATION 25, no. 1 (June 1, 2019): 86–90. http://dx.doi.org/10.2478/kbo-2019-0014.

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Abstract Military operations have an evolving character that responds to the changes in the nature of the conflict. The basic nature of the operation is given by the operational themes. These have a major impact on related military activities and on their tactical tasks. The commander at the tactical level, in order to achieve the end state of the operation, must fully understand the mission, respect the superior’s intent and perceive the conditions, circumstances and influences of each individual characteristic element of the assigned area of operation. The instruments to achieve this status of comprehension are tactical variables (Mission, Enemy, Terrain and Weather, Troops available, Time available, Civil considerations - METT-TC). The aim of the article is to describe tactical variables, which at the tactical level serve as the tool for mission analysis.

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Zhao, X., S. Sahoo, K. Kyprianidis, J. Rantzer, and M. Sielemann. "Off-design performance analysis of hybridised aircraft gas turbine." Aeronautical Journal 123, no. 1270 (August 8, 2019): 1999–2018. http://dx.doi.org/10.1017/aer.2019.75.

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ABSTRACTAn advanced geared turbofan with year 2035 technology level assumptions was established and used for the hybridisation study in this paper. By boosting the low-speed shaft of the turbofan with electrical power through the accessory gearbox, a parallel hybrid concept was set up. Focusing on the off-design performance of the hybridised gas turbine, electrical power input to the shaft, defined as positive hybridisation in this context, generally moves the compressor operation towards surge. On the other hand, the negative hybridisation, which is to reverse the power flow direction can improve the part-load operations of the turbofan and minimise the use of compressor handling bleeds. For the pre-defined mission given in the paper, negative hybridisation of descent, approach and landing, and taxi operations with 580 kW, 240 kW and 650 kW, respectively was found sufficient to keep a minimum compressor surge margin requirement without handling bleed.Looking at the hybridisation of key operating points, boosting the cruise operation of the baseline geared turbofan is, however, detrimental to the engine efficiency as it is pushing the cruise operation further away from the energy optimal design point. Without major modifications to the engine design, the benefit of the hybridisation appears primarily at the thermomechanical design point, the hot-day take-off. With the constraint of the turbine blade metal temperature in mind, a 500kW positive hybridisation at hot-day take-off gave cruise specific fuel consumption (SFC) reduction up to 0.5%, mainly because of reduced cooling flow requirement. Through the introduction of typical electrical power system performance characteristics and engine performance exchange rates, a first principles assessment is illustrated. By applying the strategies discussed in the paper, a 3% reduction in block fuel burn can be expected, if a higher power density electrical power system can be achieved.

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Cho, Gyusung, and Suk-Hwan Lee. "Cloud-Based Virtual Port-Container Terminal Establishment and Operation Analysis." Electronics 9, no. 10 (October 1, 2020): 1615. http://dx.doi.org/10.3390/electronics9101615.

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Worldwide, governments are making efforts to enhance the efficiency of port terminals by applying new technologies developed in the context of the Fourth Industrial Revolution. This study aims to systematically analyze port productivity and operational efficiency by establishing cloud-based virtual port-container terminals using operational data from Busan Port terminals. Accordingly, the integrated aspect-oriented modeling approach is applied to actual operational data from port-container terminals to develop a reusable, extendible and modifiable control system. This technique is used to establish a virtualized port-container terminal. In addition, this study presents a way to solve various problems arising from port-container terminals by analyzing real-time operation data generated by the terminals through a cloud system, as well as suggests ways to streamline operations. The methodology presented in this study can be applied to establish optimal operating systems for various ports and to develop and operate future port-container terminal systems.

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HOFMANN, HOLGER F., RYO OKAMOTO, and SHIGEKI TAKEUCHI. "ANALYSIS OF AN EXPERIMENTAL QUANTUM LOGIC GATE BY COMPLEMENTARY CLASSICAL OPERATIONS." Modern Physics Letters A 21, no. 24 (August 10, 2006): 1837–50. http://dx.doi.org/10.1142/s0217732306021281.

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Quantum logic gates can perform calculations much more efficiently than their classical counterparts. However, the level of control needed to obtain a reliable quantum operation is correspondingly higher. In order to evaluate the performance of experimental quantum gates, it is therefore necessary to identify the essential features that indicate quantum coherent operation. In this paper, we show that an efficient characterization of an experimental device can be obtained by investigating the classical logic operations on a pair of complementary basis sets. It is then possible to obtain reliable predictions about the quantum coherent operations of the gate such as entanglement generation and Bell state discrimination even without performing these operations directly.

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Journal articles on the topic 'Operation analysis'

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