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The Development of the Distribution/VMI Game Based on Theory of Constraints
Zheng, Kai-Wen,Tsai, Chih-Hung,Li, Rong-Kwei,Chen, Ching-Piao,Tsai, Shih-Chieh The Korean Society for Quality Management 2009 The Asian Journal on Quality Vol.10 No.1
As the flourish of today's supply chain, the traditional model of replenishment will cause accumulation of excessive inventory to the retailers and customers, or cause shortages and inability to meet the demands. To solve this problem, Theory of Constraints (TOC) proposed the replenishment model of demand-pull, combined with the establishment of factory-ware-house to achieve performance improvement. In the absence of empirical research, this study applied the Bean Game developed by Dr. Goldratt to design a supply chain system for different scenarios, in order to allow players and managers better understanding and supporting the TOC replenishment method through the operations of the game.
Hsin-Hsi Tsai,Bo-Ching Lee,Ya-Fang Chen,Jiann-Shing Jeng,Li-Kai Tsai 대한뇌졸중학회 2022 Journal of stroke Vol.24 No.3
Background and Purpose Cerebral venous flow alterations potentially contribute to age-related white matter changes, but their role in small vessel disease has not been investigated. Methods This study included 297 patients with hypertensive intracerebral hemorrhages (ICH) who underwent magnetic resonance imaging. Cerebral venous reflux (CVR) was defined as the presence of abnormal signal intensity in the dural venous sinuses or internal jugular vein on time-of-flight angiography. We investigated the association between CVR, dilated perivascular spaces (PVS), and recurrent stroke risk. Results CVR was observed in 38 (12.8%) patients. Compared to patients without CVR those with CVR were more likely to have high grade (>20 in the number) dilated PVS in the basal ganglia (60.5% vs. 35.1%; adjusted odds ratio [aOR], 2.64; 95% confidence interval [CI], 1.25 to 5.60; P=0.011) and large PVS (>3 mm in diameter) (50.0% vs. 18.5%; aOR, 3.87; 95% CI, 1.85 to 8.09; P<0.001). During a median follow-up of 18 months, patients with CVR had a higher recurrent stroke rate (13.6%/year vs. 6.2%/year; aOR, 2.53; 95% CI, 1.09 to 5.84; P=0.03) than those without CVR. Conclusions CVR may contribute to the formation of enlarged PVS and increase the risk of recurrent stroke in patients with hypertensive ICH.
( Ching-ling Lin ),( Ming-lin Tsai ),( Yu-hsin Chen ),( Wei-ni Liu ),( Chun-yu Lin ),( Kai-wen Hsu ),( Chien-yu Huang ),( Yu-jia Chang ),( Po-li Wei ),( Shu-huey Chen ),( Li-chi Huang ),( Chia-hwa Lee 한국응용약물학회 2021 Biomolecules & Therapeutics(구 응용약물학회지) Vol.29 No.5
Thyroid cancer is the most common endocrine malignancy. Patients with well-differentiated thyroid cancers, such as papillary and follicular cancers, have a favorable prognosis. However, poorly differentiated thyroid cancers, such as medullary, squamous and anaplastic advanced thyroid cancers, are very aggressive and insensitive to radioiodine treatment. Thus, novel therapies that attenuate metastasis are urgently needed. We found that both PDGFC and PDGFRA are predominantly expressed in thyroid cancers and that the survival rate is significantly lower in patients with high PDGFRA expression. This finding indicates the important role of PDGF/PDGFR signaling in thyroid cancer development. Next, we established a SW579 squamous thyroid cancer cell line with 95.6% PDGFRA gene insertion and deletions (indels) through CRISPR/Cas9. Protein and invasion analysis showed a dramatic loss in EMT marker expression and metastatic ability. Furthermore, xenograft tumors derived from PDGFRA geneedited SW579 cells exhibited a minor decrease in tumor growth. However, distant lung metastasis was completely abolished upon PDGFRA gene editing, implying that PDGFRA could be an effective target to inhibit distant metastasis in advanced thyroid cancers. To translate this finding to the clinic, we used the most relevant multikinase inhibitor, imatinib, to inhibit PDGFRA signaling. The results showed that imatinib significantly suppressed cell growth, induced cell cycle arrest and cell death in SW579 cells. Our developed noninvasive apoptosis detection sensor (NIADS) indicated that imatinib induced cell apoptosis through caspase-3 activation. In conclusion, we believe that developing a specific and selective targeted therapy for PDGFRA would effectively suppress PDGFRA-mediated cancer aggressiveness in advanced thyroid cancers.
Po-Ju Lai,Sheng-Fen Wang,Tsung-Ting Tsai,Yun-Da Li,Ping-Yeh Chiu,Ming-Kai Hsieh,Fu-Cheng Kao 대한척추신경외과학회 2021 Neurospine Vol.18 No.4
Objective: Surgical treatment of severe infectious spondylodiskitis remains challenging. Although minimally invasive percutaneous endoscopic drainage and debridement (PEDD) may yield good results in complicated cases, outcomes of patients with extensive structural damage and mechanical instability may be unsatisfactory. To address severe infectious spondylodiskitis, we have developed a surgical technique called percutaneous endoscopic interbody debridement and fusion (PEIDF), which comprises endoscopic debridement, bone-graft interbody fusion, and percutaneous posterior instrumentation. Methods: Outcomes of PEIDF in 12 patients and PEDD in 15 patients with infectious spondylodiskitis from April 2014 to July 2018 were reviewed retrospectively. Outcome were compared between 2 kinds of surgical procedures. Results: Patients in PEIDF group had significantly lower rate of revision surgery (8.3% vs. 58.3%), better kyphosis angle (-5.73°±8.74 vs. 1.07°±2.70 in postoperative; 7.09°±7.23 vs. 0.79°±4.08 in kyphosis correction at 1 year), and higher fusion rate (83.3% vs. 46.7%) than those who received PEDD. Conclusion: PEIDF is an effective approach for treating infectious spondylodiskitis, especially in patients with spinal instability and multiple medical comorbidities.