• Journal of the Korea Institute of Building Construction
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• v.1 no.1
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• pp.135-142
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• 2001

This study is for the investigation of form using the aluminum-compound metal frame(Aluminum frame reinforced panel : AFR panel) which is improved in the capacity in the wall-concrete structure in steal of using the existing form which has problems such as, excessive exposure of cement, the loss of labor when it is constructed or disjointed, and it's economical efficiency compared with that of EURO Form. AFR panel passes the KS F 8006 test, and as a result of field test, it's displacement is satisfied with Specification. And using AFR panel is more economical than that of EURO Form because saving labor cost which plays a major part in cost saving in formwork is more effective in retrenching total cost than increment of material cost.

• Food Science and Preservation
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• v.5 no.2
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• pp.127-132
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• 1998

In order to fad out an efficient way of topdressing nitrogen fertilizer in mulch-cropping system of onion(Allium cepa L.), solid, slow-release, and liquid forms of nitrogen fertilizers were allied to cv. 'Changnyungdaego' various number of times at different time, with 5 topdress applications of solid fertilizer serving as a control. Whole basal application of conventional solid fertilizer and 2 slow-release fertilizers were labor-saving and showed improved storage quality of bulbs, but resulted in poor plant growth and considerably low yield due to fertilizer shortage from early April. This suggests that topdress application is necessary. Liquid form of nitrogen fertilizer was more effective for plant growth and yield and saving labor than the solid form. Early applications was effective for increasing yield and storage quality of onion bulbs harvested. Thus two applications of liquid form of nitrogen fertilizer in February and March at rome month interval are recommended in mulch crowing system of onion.

• Journal of Fisheries and Marine Sciences Education
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• v.27 no.2
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• pp.422-429
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• 2015

The purpose of this study is the improvement of the existing trolling hauler, which has only one wheel to wind a main line, for saving man power around the coast of Jeju island. The trolling hauler manufactured for a test performance consisted of the wheel part of a main line and the roller part of a leader line including labor-saving devices comprised of a friction clutch, a fastener and springs. Even though this existing electric hauler system is convenient to control the wheel speed and the winding direction, it is apt to cost high and to corrode quickly at sea. Therefore, to remove these negative elements and to operate rollers for hoisting a leader line of the trolling, hydraulic motors were used separately. As a result, according to using of labor-saving devices, the towing tension occurred in operating in fishing ground could be selected moderately without breaking of lines and the operating efficiency of the trolling hauler was verified.

• Korean Journal of Environmental Agriculture
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• v.12 no.1
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• pp.81-84
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• 1993

• East Asian Economic Review
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• v.24 no.4
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• pp.313-336
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• 2020

In this paper, I review evidence on changing global specialization in labor-intensive exporting. Production of apparel, footwear, furniture, and related products are how many low-income countries first enter export manufacturing. Just as China's rise as a powerhouse in these goods supplanted a role previously occupied by the East Asian Tigers, the world may again be on the cusp of significant change in where labor-intensive goods are produced. China's prowess in these sectors peaked in the early 2010s; its share in their global exports, while still substantial, is now in decline. Mechanisms through which the global economy may adjust to China's graduation into more technologically sophisticated activities include expanded labor-intensive export production in other emerging economies and labor-saving technological change in products currently heavily reliant on less-educated labor. Available evidence suggests that the first mechanism is operating slowly and the second hardly at all. As a third mechanism, China may in part replace itself by moving labor-heavy factories out of densely populated and expensive coastal cities and into the country's interior. Such a transition, though still in its infancy, would mirror the decentralization of manufacturing production in the U.S. and Europe, which occurred after World War II.

• Korean Journal of Plant Resources
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• v.22 no.4
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• pp.359-363
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• 2009

In order to establish labor-saving culture technology in Tartary buckwheat, three cultural practices: hand planting, drill sowing machine and soil cover direct seeding machine, were compared.The highest grain yield was found in soil cover direct seeding plot with a value of 3.4 g per plant. As a result, grain yield may be estimated to be 113kg in soil cover direct seeding and 80kg in hand scattering. In addition, for the weed control, three herbicide treatments: single use of Alachlor, mixture and combination of Alachlor and Paraquat dichloride were conducted. the mixture showed over 90% weed control value, and the highest grain yield was found in the combination treatment. Combine machine was effective to reduce the ratio of grain loss and working hour by enhancing the working efficiency to 15${\sim}$20min/10a.

• Horticultural Science & Technology
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• v.18 no.6
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• pp.787-791
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• 2000

Lettuce seedlings used in this investigation of planting distance and labor-saving efficiency were first grown in 100-hole paper trays for 30 days. Seedling height for transplanting ranged from 3 cm to 6 cm and plants had 3 to 5 leaves. The beds prepared for transplanting were of the arched type and were 35-40 cm in width, 15-20 cm in bed height, and between-bed furrow width was 20 30 cm. Typical seedling planting depth with the transplanter was 4-5 cm, although depth was quite variable because of the irregularities of the ground. Total transplanting time with the transplanter varied from 2.6 to 2.7 hours per 10a, while it took 38.1 hours per 10a with conventional planting. It was critical that the condition of both the seedlings and the bed be adjusted to the transplanter before planting. Considering yield and inter-plant distance, optimal transplanter performance resulted with $60{\times}20cm$ or $60{\times}25cm$spacing, and the labor-saving efficiency using the transplanter was improved by over 93% of that of conventional planting by hand.

• Journal of Mushroom
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• v.16 no.4
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• pp.293-298
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• 2018

'Geumhyang2ho', a new brown and labor-saving variety of Flammulina velutipes, was bred by spontaneous crossing between 'Geumhyang' and 'Garlmoe' during demonstration cultivation in bag culture farm of oyster mushroom in 2013. During bottle cultivation, the temperature was maintained at $16^{\circ}C$; the variety displayed good quality compared to the control ('Geumhyang'), without necessitating vinyl cone treatment. The time periods necessary for mycelial growth, fruit body growth, and primordia formation were 24 days, 11 days, and 8 days, respectively. The total cultivation period was 43 days, which was 2 days longer than that of the control. The pileus diameter was smaller, but the pileus thickness and stipe diameter were greater than those of the control. The pileus color was yellowish ivory, which was very similar to that of the control. The yield of 'Geumhyang2ho' was 118 g per 850 ml bottle, which was markedly lower than that for bottle cultivation with vinyl cone treatment. However, its good quality suggests the potential of the labor-saving bottle-based cultivation of 'Geumhyang2ho' without vinyl cone treatment in oyster mushroom farms.

• 제어로봇시스템학회:학술대회논문집
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• 1996.10b
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• pp.1484-1487
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• 1996

An Automatic coking control system was developed to achieved substantial energy and labor savings through the stabilization and optimization of coke oven operation. With the aim of saving energy and labor, the coke department has been advanced automation and systematization. A typical examples of automation is Center Position Control System(CPCS) for coke oven. This system is proved effective in improvement of center position accuracy.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2000.04a
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• pp.227-232
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• 2000