• Title/Summary/Keyword: great freedom

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Differences in Users' Insights and Increase in The Acceptance Level for Using The BYOD Approach in Government, Non-Profit Organizations, and Private Sectors in Saudi Arabia

  • Alghamdi, Ahmed M.;Bahaddad, Adel A.;Almarhabi, Khalid A.
    • International Journal of Computer Science & Network Security
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    • v.22 no.7
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    • pp.332-346
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    • 2022
  • Digital transformation represents one of the main obstacles facing several government, private, and non-profit sectors that help stabilize digital transformation in the Arabic region. One of the helpful ways to improve the level of freedom, productivity, and flexibility among employees to accept the BYOD approach is using their own devices to perform their work both in and outside the workplace. This study focuses to present the differences between the main three economic sectors, which represent the most important pillars of the economy in Saudi Arabia within the Kingdom's Vision 2030. BYOD also has great importance to the stakeholders for raising their awareness by expressing the implications, if the concept of BYOD is widely and correctly adopted. The study uses the diffusion of innovation (DOI) framework and quantitative analysis data to determine the main dimensions and important factors that help increase the awareness of the target audience. The number of participants in this study was 830, and the participants are mixing between the government, private, and non-profit sectors. The main findings showed a significant impact of several factors such as the importance of knowledge, ease of use, employee satisfaction, risk awareness, and attention to increase the level of acceptance in three main sectors study for using the BYOD approach widespread and professional use.

Modeling of a rockburst related to anomalously low friction effects in great depth

  • Zhan, J.W.;Jin, G.X.;Xu, C.S.;Yang, H.Q.;Liu, J.F.;Zhang, X.D.
    • Geomechanics and Engineering
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    • v.29 no.2
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    • pp.113-131
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    • 2022
  • A rockburst is a common disaster in deep-tunnel excavation engineering, especially for high-geostress areas. An anomalously low friction effect is one of the most important inducements of rockbursts. To elucidate the correlation between an anomalously low friction effect and a rockburst, we establish a two-dimensional prediction model that considers the discontinuous structure of a rock mass. The degree of freedom of the rotation angle is introduced, thus the motion equations of the blocks under the influence of a transient disturbing force are acquired according to the interactions of the blocks. Based on the two-dimensional discontinuous block model of deep rock mass, a rockburst prediction model is established, and the initiation process of ultra-low friction rockburst is analyzed. In addition, the intensity of a rockburst, including the location, depth, area, and velocity of ejection fragments, can be determined quantitatively using the proposed prediction model. Then, through a specific example, the effects of geomechanical parameters such as the different principal stress ratios, the material properties, a dip of principal stress on the occurrence form and range of rockburst are analyzed. The results indicate that under dynamic disturbance, stress variation on the structural surface in a deep rock mass may directly give rise to a rockburst. The formation of rockburst is characterized by three stages: the appearance of cracks that result from the tension or compression failure of the deformation block, the transformation of strain energy of rock blocks to kinetic energy, and the ejection of some of the free blocks from the surrounding rock mass. Finally, the two-dimensional rockburst prediction model is applied to the construction drainage tunnel project of Jinping II hydropower station. Through the comparison with the field measured rockburst data and UDEC simulation results, it shows that the model in this paper is in good agreement with the actual working conditions, which verifies the accuracy of the model in this paper.

A real-time hybrid testing method for vehicle-bridge coupling systems

  • Guoshan Xu;Yutong Jiang;Xizhan Ning;Zhipeng Liu
    • Smart Structures and Systems
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    • v.33 no.1
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    • pp.1-16
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    • 2024
  • The investigation on vehicle-bridge coupling system (VBCS) is crucial in bridge design, bridge condition evaluation, and vehicle overload control. A real-time hybrid testing (RTHT) method for VBCS (RTHT-VBCS) is proposed in this paper for accurately and economically disclosing the dynamic performance of VBCSs. In the proposed method, one of the carriages is chosen as the experimental substructure loaded by servo-hydraulic actuator loading system in the laboratory, and the remaining carriages as well as the bridge structure are chosen as the numerical substructure numerically simulated in one computer. The numerical substructure and the experimental substructure are synchronized at their coupling points in terms of force equilibrium and deformation compatibility. Compared to the traditional iteration experimental method and the numerical simulation method, the proposed RTHT-VBCS method could not only obtain the dynamic response of VBCS, but also economically analyze various working conditions. Firstly, the theory of RTHT-VBCS is proposed. Secondly, numerical models of VBCS for RTHT method are presented. Finally, the feasibility and accuracy of the RTHT-VBCS are preliminarily validated by real-time hybrid simulations (RTHSs). It is shown that, the proposed RTHT-VBCS is feasible and shows great advantages over the traditional methods, and the proposed models can effectively represent the VBCS for RTHT method in terms of the force equilibrium and deformation compatibility at the coupling point. It is shown that the results of the single-degree-of-freedom model and the train vehicle model are match well with the referenced results. The RTHS results preliminarily prove the effectiveness and accuracy of the proposed RTHT-VBCS.

The Effects of Kisaeng's Clothes on General Women's Fashion in the Late Choson Dynasty (조선후기 기여복식이 일반부녀자 복식에 미친 영향)

  • 김나형;김용서
    • Journal of the Korean Society of Costume
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    • v.39
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    • pp.113-123
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    • 1998
  • This study focuses on the effects of the clothes worn by kisaeng; courtesans trained in singing and dancing, on changes in female psychology as reflected in general women's fashions during the later years of the Chosun dynasty. During this period, the social order had broken down considerable, due in part to the introduction of Roman Catholicism, and in part to the actions of Sil-hak, who emphasized open-ness and practicality in the organization of social affairs. This freer social environment disrup-ted the established social hierarchies. The kisaeng were among the first to respond to the new social mores by adopting more colorful, sensual, and individualized fashions. Their social position allowed them to reflect the new aesthetics of the time right away. Those aesthetics seemed to lay great emphasis on the artistic effects of contrast. The kisaeng would adorn their heads with large Kache (an elaborate wig or hairdo typically reserved for use by women in full formal dress). In contrast to this conspicuous hairstyle, they typically wore very tight-fitting Jogori (short-cropped Korean traditional jackets for women) around their upper torsos. The long skirts emerging from beneath these short jackets would typically flare out dramatically, with the aid of petticoats. However, these skirts would be bound at the waist with a sash, increasing the sexual suggestiveness of the clothing by drawing at-tention to the hips, and by exposing the bottom frills of the petticoats, or the wide pantal-oons and other undergarments the kisaeng wore to add volume to their skirts. The relative freedom enjoyed by the kisaeng to experiment with new fashions was not widely shared by most women. This generated envy from women of the noble classes, who were more bound by convention, and restrained from adopting such a mode of dress. It also generated envy from women of the humble classes, who saw the kisaeng as working little for their wealth, and yet dressing every day in finery that the average women would only ever be able to afford on her wedding day. This envy directed at the relative freedom/wealth of the kisaeng by women who faced greater socioeconomic constraints was given cultural expression through the adoption of elements of the kisaeng's fashion in the fashions of both noblewomen and humble women in old korea. The luxurious Kache sported by the kisaeng had in fact been borrowed from the habitual attire of upper-class women. So to distinguish themeselves from the kisaeng, they began to abandon these elaborate hairstyles in favor of traditional ceremonial hoods (Nel-ul-a thin black women's hood) and coronets (Suegaechima). This supposed reaction to the abuse of the Kache by the kisaeng still remained influenced by the kisaeng still remained influence by the kisaeng, however, as these headdresses became adorned with many more jewels and decorations, in imitation of the kisaeng's adaptations of the coronet. At the same time, noblewomen began sporting the Jangwue ; a headdress previously worn only by kisaeng and lower class women, and lower class women were then permitted to wear the Kache at weddings. All women behan to wear shorter, tighter Jogori jackets, and to add volume to their skirts. They also attached frills to their under-garments in imitation of the kisaeng's exposed petticoats and pantaloons. The impact of kisaeng fashions was thus deep and widespread, and can be understood as an expression of women's longing for freedom from socioeconomic constraints in the late Chosun dynasty. This study adopts an interdisciplinary ap-proach to the understanding of historical changes in women's fashions. Such interdisciplinary work can greatly enrich the study of fashion, often narrowly focused on clothing morphology and broad generalizations about society. For this reason, specific dynamics of feminine psychology in the late Chosun dynasty were elaborated in this study, to provide a deeper under-standing of the changes in fashion underpinned by them. If more such detailed analyses are undertaken, a whole new understanding of changes in fashion can be generated, and perhaps a transformation of the field of fashion history can be ultimately achieved.

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Long Term Results of Rastelli Operation with a Mechanical Valve (기계 판막을 이용한 라스텔리 수술의 장기 성적)

  • Choi, Se-Hoon;Kim, Kwan-Chang;Kwak, Jae-Gun;Kim, Chang-Young;Lee, Jeong-Ryul;Kim, Yong-Jin;Rho, Joon-Ryang;Kim, Woong-Han
    • Journal of Chest Surgery
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    • v.39 no.12 s.269
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    • pp.900-905
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    • 2006
  • Background: Homografts and bioprostheses are most commonly used for Rastelli operation in congenital heart disease, but the limited durability is responsible for multiple reoperations associated with increased morbidity This study evaluated long-term results after Rastelli operation with a mechanical valved conduit. Material and Method: A total of 20 patients underwent Rastelli operation with mechanical valved conduit from January 1990 to July 1992. Operative mortality was 1 of 20 patients, and a retrospective review of 19 patients(10 males, 9 females) was done. Initial diagnosis was congenitally corrected transposition of great arteries(cc-TGA, n=4), complete TGA (n=2), ventricular septal defect with pulmonary atresia(VSD with PA, n=9), truncus arteriosus(n=2), double outlet right ventricle with pulmonary stenosis(DORV with PS, n=2). The mean age at Rastelli operation was $4.6{\pm}3.4$ years, and mean follow-up period was $12.8{\pm}2.7$ years. Patients underwent Rastelli opearation using 16 CarboMedics mechanical valve, and 3 Bjork-Shiley mechanical valve($17{\pm}2$ mm). Result: There were 15 reoperations for failed mechanical valved conduit. The freedom from reoperation at 5 and 10 years was 53% and 37%. Most patients were received oral anticoagulation with warfarin, and maintained the international normalized ratio(INR) of 1.5 to 2.0. There was no anticoagulation or thromboembolism related complication. There was a significant difference in the causes of a conduit failure between early(within 3 years) and late(after 3 years) failure groups. The six patients reported early prosthetic valve failure, mainly due to valvular dysfunction by thrombosis or pannus formation. The other nine patients reported late prosthetic valve failure, mainly due to dacron conduit stenosis at anastomosis sites, whereas their valvar motion was normal except 1 patient. Conclusion: To avoid early prosthetic valve failure, strict anticoagulation therapy would be helpful. About the late development of obstructive intimal fibrocalcific peels within the Dacron conduit, an improvement of conduit material is necessary to reduce late prosthetic valve failure. In selected patients, the long term results were satisfactory.

Long-term Results of Modified Lecompte Procedure for the Anomalies of Ventriculoarterial Connection (심실대혈관 연결 이상에 대한 변형된 Lecompte 술식의 장기 성적)

  • 임홍국;한국남;김웅한;이정렬;노준량;김용진
    • Journal of Chest Surgery
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    • v.37 no.9
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    • pp.727-734
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    • 2004
  • The Lecompte procedure for transposition of the great arteries has an advantage because it obviates the need for an extracardiac conduit for the reconstruction of the pulmonary outflow tract. We evaluated the effectiveness and the application of the Lecompte procedure. Material and Method: A retrospective review was conducted of the records of 46 patients who underwent the Lecompte procedure during the past 15 years. Mean age at operation was 29.2$\pm$20.3 (range: 3∼83) months. The diagnoses involved anomalies of the ventriculoarterial connection with ventricular septal defect and pulmonary outflow tract obstruction, such as transposition of the great arteries, double-outlet right ventricle, and double-outlet left ventricle. Result: Early mortality was 4.4% (2 of 46 patients) and late mortality was 6.8% (3 of 44). The mean follow-up was 11.2$\pm$6.9 years. Eighteen patients (43.9% of survivors, n=41) had pulmonary stenosis (pressure gradient above 30 mmHg), the main reason for which was a calcified monocusp valve (n=15, 83.3%). Seventeen of 46 patients (37.0%) underwent reoperation: 15 for pulmonary stenosis, 5 for residual ventricular septal defect, 4 for left ventricular outflow tract obstruction, 3 for pulmonary insufficiency, and 4 for other causes. The cumulative survival rates were 91.3$\pm$4.2%, and 87.0$\pm$5.8% at 10 and 15 years, respectively. The actuarial probabilities of freedom from reoperation for pulmonary stenosis were 90.6$\pm$4.5%, 73.9$\pm$7.3%, and 54.0$\pm$10.4% at 5, 10, and 15 years, respectively. Conclusion: The Lecompte procedure is an effective treatment modality. Repair in early age is possible with acceptable morbidity and mortality, but recurrent right ventricular outflow tract obstruction caused by degeneration of the monocusp valve is a problem that needs resolution.

Surgical and Long Term Results for Double Outlet Right Ventricle by the Type of Ventricular Septal Defect (심실중격결손의 형태에 따른 양대혈관 우심실기시증의 수술 및 장기 결과)

  • Yu Song Hyeon;Park Han Ki;Cho Bum Koo;Park Young Hwan
    • Journal of Chest Surgery
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    • v.38 no.3 s.248
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    • pp.181-190
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    • 2005
  • The results of biventricular repair for double outlet right ventricle have been improved in recent series. We studied the surgical and long term results for total correction of double outlet right ventricle by the type of ventricular septal defect. Material and Method: Between November 1979 and December 2003, 126 patients had biventricular repair for double outlet right ventricle. The mean age was 1.8 years (range 1$\~$44) and 86 patients ($68.3\%$) were male. We classified and studied this disease by the type of VSD. Result: The locations of VSD were subaortic in 79 ($62.7\%$), subpulmonary in 17 ($13.5\%$), doubly committed in 16 ($12.7\%$) and noncommitted in 14 ($11.1\%$). 28 patients had palliative operation before total correction and the mean interval to total correction was 41.0$\pm$45.1 months. The methods of total correction were intraventricular baffling in 37 ($29.4\%$), intraventricular baffling with patch enlargement of right ventricular outflow tract in 49 ($38.9\%$), intraventricular baffling with Rastelli procedure in 15 ($11.9\%$), arterial switch operation in 8 ($6.3\%$) and REV procedure in 4 ($3.2\%$), etc. Hospital mortality rate was $10.3\%$ (13 patients) and 25 reoperations were performed in 24 patients ($19.0\%$). The risk factors for hospital mortality and reoperation were cardiopulmonary bypass time (p=0.020) and previous palliative operation (p=0.013), respectively. Follow up was possible in 98 patients and mean follow up period was 118.9$\pm$70.7 months. The percent survival and survival for freedom from reoperation at 15 years were $82.5\%$ and $66.7\%$, respectively. The survival rate was significantly lower (p=0.003) in transposition of great artery type and remote type than in simple ventricular septal defect type and tetralogy of Fallot type, but there was no statistical differences in survival rate for freedom from reoperation. Conclusion: It is thought to be that acceptible surgical and long term results can be obtained with application of appropriate methods of repair for double outlet right ventricle.

Evaluation of the usefulness of IGRT(Image Guided Radiation Therapy) for markerless patients using SGPS(Surface-Guided Patient Setup) (표면유도환자셋업(Surface-Guided Patient Setup, SGPS)을 활용한 Markerless환자의 영상유도방사선치료(Image Guided Radiation Therapy, IGRT)시 유용성 평가)

  • Lee, Kyeong-jae;Lee, Eung-man;Lee, Jeong-su;Kim, Da-yeon;Ko, Hyeon-jun;Choi, Shin-cheol
    • The Journal of Korean Society for Radiation Therapy
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    • v.33
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    • pp.109-116
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    • 2021
  • Purpose: The purpose of this study is to evaluate the usefulness of Surface-Guided Patient Setup by comparing the patient positioning accuracy when image-guided radiation therapy was used for Markerless patients(unmarked on the skin) using Surface-Guided Patient Setup and Marker patients(marked on the skin) using Laser-Based Patient Setup. Materials And Methods: The position error during IGRT was compared between a Markerless patient initially set up with SGPS using an optical surface scanning system using three cameras and a Marker patient initially set up with LBPS that aligns the laser with the marker drawn on the patient's skin. Both SGPS and LBPS were performed on 20 prostate cancer patients and 10 Stereotactic Radiation Surgery patients, respectively, and SGPS was performed on an additional 60 breast cancer patients. All were performed IGRT using CBCT or OBI. Position error of 6 degrees of freedom was obtained using Auto-Matching System, and comparison and analysis were performed using Offline-Review in the treatment planning system. Result: The difference between the root mean square (RMS) of SGPS and LBPS in prostate cancer patients was Vrt -0.02cm, Log -0.02cm, Lat 0.01cm, Pit -0.01°, Rol -0.01°, Rtn -0.01°, SRS patients was Vrt 0.02cm, Log -0.05cm, Lat 0.00cm, Pit -0.30°, Rol -0.15°, Rtn -0.33°. there was no significant difference between the two regions. According to the IGRT standard of breast cancer patients, RMS was Vrt 0.26, Log 0.21, Lat 0.15, Pit 0.81, Rol 0.49, Rtn 0.59. Conclusion:. As a result of this study, the position error value of SGPS compared to LBPS did not show a significant difference between prostate cancer patients and SRS patients. In the case of additionally performed SGPS breast cancer patients, the position error value was not large based on IGRT. Therefore, it is considered that it will be useful to replace LBPS with SGPS, which has the great advantage of not requiring patient skin marking..

A Study on the Reordering Works of Heaven and Earth: As Analyzed via the Hegelian Concept of Arbeit (헤겔의 노동(勞動, Arbeit) 개념을 통해 본 천지공사(天地公事) 연구)

  • Kim, Dae-hyeon
    • Journal of the Daesoon Academy of Sciences
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    • v.32
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    • pp.175-199
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    • 2019
  • This paper aims to define Kang Jeungsan's Reordering Works of Heaven and Earth through the Hegelian concept of 'labor (arbeit),' which is the fundamental medium in which humans substantialize their own absoluteness in an existentialist context. The Reordering Works of Heaven and Earth performed by Jeungsan enabled Heaven, Earth, and Humanity to communicate with each other through the harmony of Sangsaeng (Mutual Beneficence). As Hegel found the possibility of freedom and emancipation of human subjects through labor and Jeungsan exercised His will to free and emancipate human beings, comparative thinkers are led to recognize a relationship between His Reordering Works of Heaven and Earth and the Hegelian concept of labor. The key point of this paper centers around articulating the meaning of the precise situation wherein labor occurs for the Supreme Being. Labor is a concept that occurs for real-live humans. Human beings can be said to exist between the ideological world and the natural world, or between Heaven and Earth, and this dichotomy creates a specific product given the interplay of infinitude and finitude that it entails. In other words, labor is not a passive deployment but is instead a subjective development. From the point wherein this labor occurs for the Supreme Being, a paradigm shift towards unity begins throughout the universe. The occurrence of God's labor happens at a time of great transformation. These occurrences of God's labor form the communication among Heaven, Earth and Humanity and form a qualitative equality. In other words, the fact that God is far from the world of ideology and has come into the world of finitude means that God conveys His absoluteness to the world of finitude. Therefore, the work of God on Earth builds the world of Heaven on Earth. This can also be seen as the Sangsaeng of Heaven, Earth and Humanity.

The School Experiences of Middle-school Students in the Free Learning Semester (중학생의 자유학기제 경험)

  • Yeo, Ji-Young;Chae, Sun-Mi
    • The Journal of the Korea Contents Association
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    • v.16 no.5
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    • pp.698-709
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    • 2016
  • Free Learning Semester, the new education policy of middle schools in Korea, will be completely implemented in 2016. The purpose of this study was to explore the school experiences of middle-school students in the Free Learning Semester through qualitative approach. In-depth interview was conducted with 8 middle-school students from the purposive sampling. As a result of the analysis, 10 essential themes were identified. Themes were as follows: 'Struggling from the performance evaluation with biting the bullet', 'Great pressure on final examination that is only once a year', 'Inconvenience of career education experience', 'Higher level of friendship', 'Double face of discrimination and respect', 'Chance to adaptation between elementary and middle-school', 'Regret about fleeting time without thought', 'Ambivalence of freedom and suppression', 'Warm place with peer', 'Being pushed rehearsal wearing other's cloth'. In conclusion, the nature of lived experience of middle-school students in the Free Learning Semester is based on ambivalence of various aspects, but is predominant in 'higher level of friendship'. It suggested that the Free Learning Semester can be a positive alternative to existing education system that made students to compete each other. It is expected to be able to discuss the future policy direction using the result of this study which explored the nature of lived experience related to the Free Learning Semester.