• 제목/요약/키워드: technical university

검색결과 11,241건 처리시간 0.035초

수중유도무기의 정비성 향상을 위한 전자식 기술교범 개발에 관한 연구 (A Study on the Development of Interactive Electronic Technical Manual to Improve the Maintainability for Underwater Guided Weapon)

  • 신주환;윤원영
    • 산업공학
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    • 제18권3호
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    • pp.308-316
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    • 2005
  • Delayed repair to the failure of weapon system can cause enormous damages to military operation. Various materials like diagnostic equipment, general and special tools, technical manuals(maintenance manual and illustrated parts breakdown) and drawing documents are required for maintenance. For existing weapon systems the distributed environment of these various materials reduces the maintenance effectiveness of maintenance crew. In this paper, to provide the information of maintenance procedures and supply to the maintenance crew we develope a digital interactive electronic technical manual of the technical documents which can be used easily in computer through question and answer method and improve maintenance effectiveness and minimized repairing time.

Effect of Customer-acquisition Orientation on Salespeople's Performance in Distribution of Pharmaceuticals

  • CHO, Yeonjin;JEON, Jin-A
    • 유통과학연구
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    • 제20권10호
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    • pp.119-129
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    • 2022
  • Purpose: The purpose of this study was to investigate sales managers' strategic focus on customer acquisition, specifically its effect on salespeople's performance. In addition, this study aimed to determine how salespeople's interpersonal skills, salesmanship skills, and technical knowledge affect the relationship between customer-acquisition management and salespeople's performance. Research design, data, and methodology: This study conducted a survey of 310 salespeople working at pharmaceutical companies. A structural equation modeling approach was applied to test the main effects and interaction effects using AMOS. Results: The results indicated that both managers' customer-acquisition orientation and salespeople's salesmanship skills and technical knowledge positively affected the latter's performance. Further, it was found that the higher the technical knowledge of the salesperson, the greater the effect of the customer-acquisition orientation on sales performance. Conclusions: Sales managers should enable salespeople to quickly acquire technical knowledge with respect to the market, products, competitors, and company policy so that they can bring greater synergy to the customer-acquisition orientation.

Local thin jacketing for the retrofitting of reinforced concrete columns

  • Yuce, Serkan Z.;Yuksel, Ercan;Bingol, Yilmaz;Taskin, Kivanc;Karadogan, H. Faruk
    • Structural Engineering and Mechanics
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    • 제27권5호
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    • pp.589-607
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    • 2007
  • Two series of tests were conducted to investigate the behavior of local thin jacketing for the retrofitting of reinforced concrete (RC) columns. In the first series, four full-scale RC columns with a height of 400 cm and a 30 cm square cross-section were tested under constant axial load and reversed cyclic lateral displacements. The heavily damaged columns were retrofitted with local thin jacketing. Self-compacting concrete (SCC) was used in the production of 7.5 cm thick, four-sided jacketing. The height of the jacketing was 100 cm for one specimen and 200 cm for all others. In the second series, the retrofitted columns were retested with the same axial load and displacement history. The effectiveness of local thin jacketing in the retrofitting of RC columns was examined with respect to lateral strength, stiffness, inelastic load-deformation behavior and energy dissipation.

GAMMA-SPECTROMETRY IN ENVIRONMENTAL MONITORING OF NUCLEAR POWER

  • Cechak, Tomas;Gerndt, Josef;Kluson, Jaroslav;Musilek, Ladislav;Thinova, Lenka
    • Journal of Radiation Protection and Research
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    • 제26권3호
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    • pp.203-206
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    • 2001
  • The mathematical processing (unfolding) of pulse height spectra from a scintillation detector helps to calculate the photon fluence rate energy distribution in a measured photon field. The data processing is based on the knowledge of detection system response function and directional dependence respectively. The experimental results of the photon fields measurements in the vicinity of the spent fuel temporary storage and inside the storage hall are presented. The containers Castor 440 are used for temporary storing of the burnt up fuel assemblies in the Czech nuclear power plant Dukovany. A set of periodical measurements was performed in order to get basic information on the time dependence of the photon fields spatial distributions and spectral characteristics in the temporary storage hall and its vicinity. The photon fields were measured by the scintillation system. The obtained photon fields spatial distributions and spectral characteristics present the information on the radiation hazard in the storage.

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Enhancement effect of phosphate and silicate on water defluoridation by calcined gypsum

  • Al-Rawajfeh, Aiman Eid;Alrawashdeh, Albara I.;Aldawdeyah, Asma;Hassan, Shorouq;Qarqouda, Ruba
    • Advances in environmental research
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    • 제2권1호
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    • pp.35-49
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    • 2013
  • Research work on removal of fluoride from water, referred to as water defluoridation, has resulted into the development of a number of technologies over the years but they suffer from either cost or efficiency drawbacks. In this work, enhancement effects of phosphate and silicate on defluoridation of water by low-cost Plaster of Paris (calcined gypsum) were studied. To our knowledge, the influence of silicate on defluoridation was not reported. It was claimed, that the presence of some ions in the treated water samples, was decreasing the fluoride removal since these ions compete the fluoride ions on occupying the available adsorption sites, however, phosphate and silicate ions, from its sodium slats, have enhanced the fluoride % removal, hence, precipitation of calcium-fluoro compounds of these ions can be suggested. Percentage removal of $F^-$ by neat Plaster is 48%, the electrical conductance (EC) curve shows the typical curve of Plaster setting which begins at 20 min and finished at 30 min. The addition of phosphate and silicate ions enhances the removal of fluoride to high extent > 90%. Thermodynamics parameters showed spontaneous fluoride removal by neat Plaster and Plaster-silicate system. The percentage removal with time showed second-order reaction kinetics.

A Rare Cause of Recurrent Acute Pancreatitis in a Child: Isovaleric Acidemia with Novel Mutation

  • Sag, Elif;Cebi, Alper Han;Kaya, Gulay;Karaguzel, Gulay;Cakir, Murat
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제20권1호
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    • pp.61-64
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    • 2017
  • Recurrent acute pancreatic attacks is a rare clinical condition (2-5% of all acute pancreatis) in children and is mainly idiopathic in most cases. Sometimes it may be associated with congenital anomalies, metabolic diseases or hereditary conditions. Isovaleric acidemia (IVA) is a rare autosomal recessive amino acid metabolism disorder associated with isovaleryl coenzyme A dehydrogenase deficiency presenting the clinical findings such metabolic acidosis with increased anion gap, hyperammonemia, ketonemia, hypoglycemia, "the odor of sweaty feet," abdominal pain, vomiting, feeding intolerance, shock and coma. Recurrent acute pancreatitis associated with IVA have been rarely reported. Herein; we report a child who admitted with recurrent acute pancreatic attacks and had the final diagnosis of IVA. Mutation analysis revealed a novel homozygous mutation of (p.E117K [c.349G>A]) in the IVA gene. Organic acidemias must kept in mind in the differential diagnosis of recurrent acute pancreatic attacks in children.

Derivation of analytical fragility curves using SDOF models of masonry structures in Erzincan (Turkey)

  • Karimzadeh, Shaghayegh;Kadas, Koray;Askan, Aysegul;Erberik, M. Altug;Yakut, Ahmet
    • Earthquakes and Structures
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    • 제18권2호
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    • pp.249-261
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    • 2020
  • Seismic loss estimation studies require fragility curves which are usually derived using ground motion datasets. Ground motion records can be either in the form of recorded or simulated time histories compatible with regional seismicity. The main purpose of this study is to investigate the use of alternative ground motion datasets (simulated and real) on the fragility curves. Simulated dataset is prepared considering regional seismicity parameters corresponding to Erzincan using the stochastic finite-fault technique. In addition, regionally compatible records are chosen from the NGA-West2 ground motion database to form the real dataset. The paper additionally studies the effects of hazard variability and two different fragility curve derivation approaches on the generated fragility curves. As the final step for verification purposes, damage states estimated for the fragility curves derived using alternative approaches are compared with the observed damage levels from the 1992 Erzincan (Turkey) earthquake (Mw=6.6). In order to accomplish all these steps, a set of representative masonry buildings from Erzincan region are analyzed using simplified structural models. The results reveal that regionally simulated ground motions can be used alternatively in fragility analyses and damage estimation studies.

Software GNSS Receiver for Signal Experiments

  • Kovar, Pavel;Seidl, Libor;Spacek, Josef;Vejrazka, Frantisek
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.2
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    • pp.391-394
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    • 2006
  • The paper deals with the experimental GNSS receiver built at the Czech Technical University for experiments with the real GNSS signal. The receiver is based on software defined radio architecture. Receiver consists of the RF front end and a digital processor based on programmable logic. Receiver RF front end supports GPS L1, L2, L5, WAAS/EGNOS, GALILEO L1, E5A, E5B signals as well as GLONASS L1 and L2 signals. The digital processor is based on Field Programmable Gate Array (FPGA) which supports embedded processor. The receiver is used for various experiments with the GNSS signals like GPS L1/EGNOS receiver, GLONASS receiver and investigation of the EGNOS signal availability for a land mobile user. On the base of experimental GNSS receiver the GPS L1, L2, EGNOS receiver for railway application was designed. The experimental receiver is also used in GNSS monitoring station, which is independent monitoring facility providing also raw monitoring data of the GPS, EGNOS and Galileo systems via internet.

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