• Title/Summary/Keyword: Rowe

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The Differential Impacts of 'Communication'and 'Computing' Functions in Smartphones on Individuals' Performance and the Moderating Role of Organizational Roles

  • Kyung Young Lee;Minwoo Lee;Kimin Kim
    • Asia pacific journal of information systems
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    • v.27 no.4
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    • pp.191-215
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    • 2017
  • This study investigated the antecedents and the performance impact of two types of Smartphone functions (communication vs. computing functions) in organizational environment and the moderating impact of Smartphone users' organizational roles. More specifically, identifying two distinct types of Smartphone functions such as communication functions and computing functions (including informational, social network, and resource management functions), we investigated the impact of three antecedents (Smartphone dependency, task mobility, and perceived critical mass) on the use of the two Smartphone functions and how organizational workers' perceived performance gains differ by using these two different Smartphone functions for their workplace activities. We tested our hypotheses with survey data collected from 176 organizational workers. Our findings suggest that Smartphone dependency, task mobility and perceived critical mass of Smartphone use are significantly associated with the use of the two different functions, and that the use of computing functions is more strongly associated with perceived performance gain than the use of communication functions. We also found that managerial roles played by individual workers differently moderate the impact of Smartphone use on perceived performance gain. The present findings enable researchers and practitioners to better understand the impact of Smartphone use in workplaces.

Effect of Beef Growth Type on Cooking Loss, Tenderness, and Chemical Composition of Pasture- or Feedlot-developed Steers

  • Brown, A.H.;Camfield, P.K.;Rowe, C.W.;Rakes, L.Y.;Pohlman, F.W.;Johnson, Z.B.;Tabler, G.T.;Sandelin, B.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.11
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    • pp.1746-1753
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    • 2007
  • Steers (n = 335) of known genetic background from four fundamentally different growth types were subjected to two production systems to study differences in cooking loss (CL), tenderness, and chemical composition. Growth types were animals with genetic potential for large mature weight-late maturing (LL), intermediate mature weight-late maturing (IL), intermediate mature weight -early maturing (IE), and small mature weight-early maturing (SE). Each year, in a nine-year study, calves of each growth type were weaned and five steers of each growth type were developed on pasture or feedlot and harvested at approximately 20 and 14 mo of age, respectively. Data collected were CL and Warner-Bratzler shear force (WBS) for the Longissimus dorsi (LM), Psoas major (PS), and Quadriceps femoris (QF) muscles. Chemical composition was also determined from the right fore- and hindquarter. Data were analyzed using least squares analysis of variance for unequal subclass numbers. The beef growth $type{\times}production$ system interaction was significant for CL and WBS of the LM and ash in the lean trim of the forequarter. Growth types of LL and IL had greater (p<0.05) mean percentage CL in the PS and QF muscles than did IE and SE steers. Growth type LL had the highest (p<0.05) mean for both moisture and protein in the fore- and hindquarters; while SE had the lowest numerical mean value for moisture and protein in the fore- and hindquarters. Shear force of the PS did not differ (p>0.05) among steers of the four growth types. Increasing challenges to the cattle feeding industry may dictate that pasture development play a larger role in future production regimes. Producers should strive to match genetic growth type with available resources in order to remain viable and continue producing a quality product.

Treatment of Multidirectional Instability of the Shoulder with Inferior Capsular Shift (하방 관절낭 이동술을 이용한 다방향 견관절 불안정의 치료)

  • Lee Byoung Chang;Chun Churl Hong;Park Seong Kyu
    • Clinics in Shoulder and Elbow
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    • v.3 no.2
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    • pp.79-86
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    • 2000
  • Purpose: We analysed the clinical efficacy of inferior capsular shift operation in multidirectional instability of the shoulder joint in terms of functional aspects and patient's satisfaction Materials and Methods: From July, 1998 to March, 2000, we treated 23 cases of multidirectional instability of the shoulder joint with T-shaped inferior capsular shift and/or Bankart repair. All of them have complained of an experience about frank dislocations. Two of them has a voluntary component. We evaluated them according to complication, function, range of motion, stability and patient's satisfaction with an average follow-up of 15 months(the range of 9 to 27 months). Results: Eight cases were atraumatic multidirectional instability and coexisting Bankart lesion were present in 15. There was no redislocation, but one case of symptomatic subluxation, 3 cases of transient nerve palsy and 2 cases of feeling of laxity developed. Limitation of motion after surgery was an average of 3.4° in flexion, and 8.5° in external rotation. With Rowe scoring system, the clinical result was excellent or good in 22 cases and poor in one. According to American shoulder and elbow society, pain score improved to 1.4 from 6.1, and stability score also improved to 1.8 from 9.1. Conclusion: In multidirectional shoulder instability, one should pay attention to finding a coexisting Bankart lesion. In that case, adequate capsular volume reduction by using inferior capsular shift as well as repair of Bankart lesion is needed to get a good surgical outcome.

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Consolidation Model and Numerical Analysis for Soft Clay Ground Considering Characteristics of Material Function (물질함수특성을 고려한 연약 점토지반의 압밀모델 및 수치해석)

  • Jeon, Je-Sung;Yi, Chang-Tok;Lee, Song
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.8 no.2
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    • pp.123-136
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    • 2004
  • Terzaghi's one-dimensional consolidation theory has some important assumption, which can't be applicable to predict the behavior of soft clay ground. Especially, predictions using infinitesimal strain and linear material function related with permeability can give rise to mistake in comparison with the result of real behavior in site. For this reason, Gibson et al. established a rigorous formulation for the one-dimensional nonlinear finite strain consolidation theory, which can consider non-linearity of material function. But it is difficult to apply this theory to predict the behavior of common soft clay ground with vertical drain. In this study, consolidation model which can consider the vertical and horizontal flow of a fully saturated clay layer, self-weight of soil and nonlinear characteristics of compressibility and permeability are derived. Numerical analysis scheme, which can be applied to consolidation analysis by derived consolidation model in this study was developed. The characteristics of material function were examined using laboratory testing such as standard consolidation test, Rowe-cell test and modified consolidation test.

Radiographic Changes in Forefoot Geometry with Weightbearing: Hallux Valgus Angle, Intermetatarsal Angle, and Medial Sesamoid (체중 부하 후 전족부 배열의 방사선적 변화: 무지 외반각 및 중족골간 각과 내측 종자골의 위치)

  • Rowe, Sung-Man;Lee, Keun-Bae;Choi, Jin;Cheon, Seung-Young;Hur, Chang-Ich
    • Journal of Korean Foot and Ankle Society
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    • v.9 no.1
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    • pp.13-19
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    • 2005
  • Purpose: To determine the radiographic changes in forefoot geometry with weight-bearing. Materials and Methods: The forefoot radiographs of 100 normal Korean adults, 50 male and 50 female volunteers, were evaluated both in nonweight-bearing and weight-bearing. The mean age was 27 years with range of 21-39 years. Those with normal feet were selected from volunteers having no history of foot problems or other musculoskeletal diseases. Results: The changes of measured angle between phalanges and metatarsals with weight-bearing were as follows; Hallux valgus angle was noted to increase in 20% of the feet, decrease in 59%, and remained unchange in 21%. Intermetatarsal angle $1{\sim}2$ was noted to increase in 76% of the feet, decrease in 3%, and remained unchange in 21%. Intermetatarsal angle $1{\sim}5$ was noted to increase in 95% and remained unchange in 5%. Shift in medial sesamoid on weight-bearing was also not consistent. Lateral shift was noted in 27%, no shift in 66%, medial shift in 7%. Conclusion: The generalized concept that the angles between bones and shift of medial sesamoid in the forefoot will change consistently with weightbearing was not found.

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Sesamoids and Accessory Bones of the Forefoot in Normal Korean Adults (정상 한국 성인의 전족부에서 관찰되는 종자골과 부골의 종류 및 빈도)

  • Rowe, Sung-Man;Lee, Keun-Bae;Park, Yu-Bok;Bae, Bong-Hyun;Kang, Kyung-Do
    • Journal of Korean Foot and Ankle Society
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    • v.9 no.1
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    • pp.20-25
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    • 2005
  • Purpose: To determine the locations and incidences of sesamoids and accessory bones of the forefoot in normal Korean adults. Materials and Methods: The plain radiographs of the forefoot of 400 volunteers, 200 males and 200 females, were taken. The three orthopedic surgeons participated in the radiographic evaluation independently. Persons who had history of foot problem or injury were excluded. Results: Sesamoids of first metatarsophalangeal joint were nearly always present; medial 99% and lateral 100%. The bipartite sesamoid was more common in medial (9.8%) and in female (17.0%) than in lateral (0.3%) and in male (2.5%). Sesamoids of the interphalangeal joint of the first toe were seen in 35.8%. Sesamoids of metatarsophalangeal joints in other four toes were rarely observed. Their incidences were 5% in second toe, 0.8% in third, 0% in fourth, and 2.8% (lateral) and 7.5% (medial) in fifth. Sesamoids of interphalangeal joint in four lesser toes were not observed except two cases (0.5%) in the fifth toe. Accessory bone was very rarely observed. Os vesalianum was observed in five feet (1.3%), Os intermetatarseum in 14 feet (3.5%), and Os cuneo-metatarsal I tibiale in none. Conclusion: We determined the location and incidences of sesamoids and accessory bones of the forefoot, and we expected this to help to diagnose the forefoot problem.

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Radiographic Evaluation on the Forefoot: Based on the Two Different Data (1982 and 2004) (전족부의 방사선학적 관찰: 1982년과 2004년의 차이를 중심으로)

  • Rowe, Sung-Man;Lee, Keun-Bae;Park, Yu-Bok;Kim, Byung-Soo;Kim, Yung-Jin
    • Journal of Korean Foot and Ankle Society
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    • v.9 no.1
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    • pp.1-8
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    • 2005
  • Purpose: We compared the bony arrangements of the forefoot in 2 different years, 1982 and 2004, to determine any changes with time period of 22 years. Materials and Methods: The radiographs of 200 normal Korean adults, 100 male and 100 female volunteers, were evaluated both in 1982 and 2004. The radiographic results were evaluated with as follows; hallux valgus angle (HVA), intermetatarsal angle (IMA), morphology of metatarsal head and relative anterior protrusion of the metatarsals and the phalanges. The mean ages were 38 years (23-52years) in 1982, and 37 years (24-50years) in 2004. Results: The mean of HVA decreased from 15.6 degrees in 1982 to 14.3 degrees in 2004 (p=0.047), and the mean of IMA increased from 8.0 degrees in 1982 to 9.4 degrees in 2004 (p=0.031). The morphology of metatarsal head and relative anterior protrusion of the metatarsals and the phalanges were not different between the two study years. Conclusion: Comparing with those of 1982 measurements, we found an increase of IMA and a decrease of HVA. A prospective study may be needed to illuminate course of the changes.

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Side Shear Resistance of Drilled Shafts in Rock (암반에 근입된 현장타설말뚝의 주면지지력)

  • Kwon, Oh-Sung;Kim, Byung-Chul;Kim, Myoung-Mo
    • Proceedings of the Korean Geotechical Society Conference
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    • 2005.03a
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    • pp.611-618
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    • 2005
  • In this research, the effect of rock mass weathering on the side shear resistance of drilled shaft socketed into weathered rock was investigated. For that, a database of 23 cast-in-place concrete piles with diameters varying from 400mm to 1,500mm were socketed into weathered igneous/meta-igneous rock at four different sites. The static axial load tests were performed to examine the resistant behavior of the piles, and a comprehensive field/laboratory testing program at the field test site was also performed to describe the in situ rock mass conditions quantitatively. No correlation was found between the compressive strengths of intact rock and the side shear resistance of weathered/soft rock. The ground investigation data regarding the rock mass conditions (e.g. $E_m,\;E_{ur},\;_{plm}$, RMR, RQD, j) was found to be highly correlated with the side shear resistance, showing the coefficients of correlation greater than 0.7 in most cases. Additionally, the applicability of existing methods for the side shear resistance of piles in rock was verified by comparison with the field test data. The existing empirical relations between the compressive strength of intact rock and the side shear resistance(Horvath (1982), Rowe & Armitage(1987) etc.) appeared to overestimated the side shear resistance of all piles tested in this research unless additional consideration on the effect of rock mass weathering or fracturing was applied. The existing methods which consider the effect of rock mass condition were modified and/or extended for weathered rock mass where mass factor j is lower than 0.1, and RQD is below 50%.

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Deep Submuscular Parosteal Angiomyxolipoma in a Child (소아에서 발생한 근하 골막 주위 심부 혈관 점액 지방종)

  • Kim, Hong-Kyun;Yoo, Jeong-Han;Park, Yong-Wook;Park, Jin-Soo;Rowe, Kyu-Cheol;Chung, Kuk-Jin;Chang, Keun-Jong;Hwang, Ji-Hyo
    • The Journal of the Korean bone and joint tumor society
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    • v.16 no.1
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    • pp.42-46
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    • 2010
  • Angiomyxolipoma is a rare variant of lipoma, which is described by Mai, 1996, at first. The nine cases of which have been reported to date. Microscopically, the lesion consists of adipose tissue with the paucicellular myxoid areas and fat tissue with numerous thin, dilated, and congestive blood vessels. The reported cases mostly located to the superficial layer on the scalp, subungual, extremities in adults. We report one case of angiomyxolipoma located in the submuscular and parosteal area in the distal femur around knee joint in a child.

A Study on the Machinability of Titanium (티타니움의 절삭성에 관한 연구)

  • Cheong, Seong-Gyu;Oh, Seok-Hyung;Seo, Nam-Seob
    • Journal of the Korean Society for Precision Engineering
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    • v.6 no.2
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    • pp.40-46
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    • 1989
  • Recently, the researches on cutting the new material have been done for development of aerospace industrial engineering. Especially, titanium ally is well known as heat resisting, antiwear, anticorrosion and difficult-to-machine materials. Many studies on the analysis of shear angle have been done for improving productivity in cutting these materials. In case of titanium alloy, the saw-toothed type of chip which has wave surface of a triangular form, an eccentric from of a continuous type of chip that is produced in the cutting process, was checked. Nakayama supposed that a maximum shear strewss plane and the shear crack in the free surface made an angle of $45^{\circ}$ .deg. , but it's usually much larger than that. In this paper, the author analyzed the shear conditions of the cutting process in the quick-stopping device with the help SEM-photographs, and measured the hypotenuse angle directly in the photographs of the chips. In conclusion, the author tried to find the shear angle in the cutting process with the saw-toothed chip and compared it with the shear angles which can be calculated from the theories established by others. The results obtained are as follows. 1. In case of the saw-toothed chips, the equivalent cutting ratio can be calculated by using the chip thickness to two-thirds of ramp height. 2. The theory of Ernst-Merchant is not applicable to the titanium and its alloys which does not fractured in accordance with the theory of maximum shear stress. 3. When we cut the titanium alloys which produced the saw-toothed chips, the shear angle can be found with the theories of Rowe-Spick, P.K. Wright and the measurement of hypotenuse angle.

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