Balanced Order Batching in Bucket Brigade Order Picking Systems with Non-identical Pickers

Xin Zhou,Keisuke Nagasawa,Katsumi Morikawa,Katsuhiko Takahashi,Daisuke Hirotani 대한산업공학회 2024 Industrial Engineeering & Management Systems Vol.23 No.1

The order batching method improves the productivity of bucket brigade order picking systems (OPSs) by picking a group of small-sized orders as one batch in a single trip. The previous model batched orders by minimizing the completion time of batches. However, it is difficult to accurately calculate the completion time due to the complexity of the bucket brigade OPSs when considering non-identical pickers. Therefore, the previous model developed formulas to estimate the completion time. As a result, the errors in the estimated completion time lead to blocking occurring in the OPSs. To solve the blocking issue, we propose the Balanced Batching Model for Bucket Brigade (BBMB). Previous studies point out that bucket brigade OPSs achieve maximum productivity when the OPSs are in a balance status, and the balanced work content directly contributes to the OPSs’ balance. Based on these concepts, the BBMB model batches orders by balancing the work content in the OPSs. The BBMB model has increased the productivity of bucket brigade OPSs when handling a large number of small-sized orders. Compared to the previous model, the BBMB model reduces the blocking time percentage from 4.46-12.5% down to 0.26-5.66% in various scenarios designed for the simulation experiment.

Investigation of the Clinical Potential of Polarization-Sensitive Optical Coherence Tomography in a Laryngeal Tumor Model

Xin Zhou,Kim Sung Won,Oak Chulho,Kwon Daa Young,Choi Jin Hyuk,Ko Taek Yong,Kim Jun Hyeong,Tang Shuo,Ahn Yeh-Chan 한국조직공학과 재생의학회 2021 조직공학과 재생의학 Vol.18 No.1

BACKGROUND: The vocal cord tissue consists of three anatomical layers from the surface to deep inside: the epithelium that contains almost no collagen, the lamina propria that is composed of abundant collagen, and the vocalis muscle layer. It is clinically important to visualize the tissue microstructure using a non-invasive method, especially in the case of vocal cord nodules or cancer, since histological changes in each layer of the vocal cord cause changes in the voice. Polarization-sensitive optical coherence tomography (PS-OCT) enables phase retardation measurement to evaluate birefringence of tissue with varied organization of collagen fibers in different tissue layers. Therefore, PS-OCT can visualize structural changes between normal and abnormal vocal cord tissue. METHOD: A rabbit laryngeal tumor model with different stages of tumor progression was investigated ex-vivo by PS-OCT. A phase retardation slope-based analysis, which quantifies the birefringence in different layers, was conducted to distinguish the epithelium, lamina propria, and muscle layers. RESULTS: The PS-OCT images showed a gradual decrease in birefringence from normal tissue to advanced tumor tissue. The quantitative analysis provided a more detailed comparison among different stages of the rabbit laryngeal tumor model, which was validated by the corresponding histological findings. CONCLUSION: Differences in tissue birefringence was evaluated by PS-OCT phase retardation measurement. It is also possible to indirectly infer the dysplastic changes based on the mucosal and submucosal alterations. BACKGROUND: The vocal cord tissue consists of three anatomical layers from the surface to deep inside: the epithelium that contains almost no collagen, the lamina propria that is composed of abundant collagen, and the vocalis muscle layer. It is clinically important to visualize the tissue microstructure using a non-invasive method, especially in the case of vocal cord nodules or cancer, since histological changes in each layer of the vocal cord cause changes in the voice. Polarization-sensitive optical coherence tomography (PS-OCT) enables phase retardation measurement to evaluate birefringence of tissue with varied organization of collagen fibers in different tissue layers. Therefore, PS-OCT can visualize structural changes between normal and abnormal vocal cord tissue. METHOD: A rabbit laryngeal tumor model with different stages of tumor progression was investigated ex-vivo by PS-OCT. A phase retardation slope-based analysis, which quantifies the birefringence in different layers, was conducted to distinguish the epithelium, lamina propria, and muscle layers. RESULTS: The PS-OCT images showed a gradual decrease in birefringence from normal tissue to advanced tumor tissue. The quantitative analysis provided a more detailed comparison among different stages of the rabbit laryngeal tumor model, which was validated by the corresponding histological findings. CONCLUSION: Differences in tissue birefringence was evaluated by PS-OCT phase retardation measurement. It is also possible to indirectly infer the dysplastic changes based on the mucosal and submucosal alterations.

지도앱의 서로 다른 패턴이 사용자의 보행 내비게이션 체험에 미치는 영향 연구

Zhou Xin,Pan Younghwan 한국서비스디자인학회 2018 한국서비스디자인학회 학술대회자료집 Vol.2018 No.2

Slope-based segmentation of articular cartilage using polarization-sensitive optical coherence tomography phase retardation image

Zhou, Xin,Ju, Myeong Jin,Huang, Lin,Tang, Shuo SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS 2019 JOURNAL OF BIOMEDICAL OPTICS Vol.24 No.3

User Experience Research of AR Navigation in Walking Mode: A case of Baidu map APP

Zhou Xin(주신),Pan Younghwan(반영환) 대한인간공학회 2018 대한인간공학회 학술대회논문집 Vol.2018 No.11

Objective: The aim of this study is to investigate how people are affected by Navigation map app when they are in real walking environment, and analyze the user experience (UX) differences in different type walk navigation, then summarize the limitations details of AR live navigation in Baidu map app. Finally, find out the methods to improve the user experience of AR live navigation map. Background: Navigation map app has a wide range of users, walking mode is one of the major strong points of this field especially in the era of daily travel. As a case study, we analyze the impact of different walk navigation modes on user experience, mainly focus on Baidu AR live navigation. Method: This paper takes the user"s outdoor walk navigation map as the starting point for short-distance navigation. Using user experiments, assign the task requirements for the research and walk navigation, and record the user"s perception of navigation process and navigation interactive experience for data analysis. Results: Based on the findings of user experience, AR live navigation has provided effective walk navigation solutions for a variety of immersive experiences through groundbreaking technological innovations. Moving from manual to automated, from static content to real-time information, from fingertip to voice, changes the way users interact with maps. Conclusion: Creating an extreme user experience of AR live navigation with differentiated functions and emotional services is worthy of attention in the future.

Early Childhood Education Policy Development in China

Xin Zhou 육아정책연구소 2011 International Journal of Child Care and Education Vol.5 No.1

Great progress in the field of early childhood education policy in China has been made in 2010. In the light of the National Plan for Medium and the Long-term Program for Education Reform and Development, the Chinese government has made a series of efforts aimed at promoting the development of early childhood education. The new policies include an increase in the 3-year early childhood program enrollment; the clarification of the governments’ main responsibilities for the provision of early childhood education; an increase of funding for early childhood education, (especially for disadvantaged children); the strengthening of teacher capacity; and the strengthening of program quality and management amongst other changes. Each province has developed a 3-year Action Plan to implement the policy. The challenges for the implementation of the new policy are also discussed.

Association Between Single Nucleotide Polymorphisms in the XRCC1 Gene and Susceptibility to Prostate Cancer in Chinese Men

Zhou, Yun-Feng,Zhang, Guang-Bo,Qu, Ping,Zhou, Jian,Pan, Hui-Xin,Hou, Jian-Quan Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.10

Background: Prostate cancer (Pca) is one of the most common complex and polygenic diseases in men. The X-ray repair complementing group 1 gene (XRCC1) is an important candidate in the pathogenesis of Pca. The purpose of this study was to evaluate the association between single nucleotide polymorphisms in the XRCC1 gene and susceptibility to Pca. Materials and Methods: XRCC1 gene polymorphisms and associations with susceptibility to Pca were investigated in 193 prostate patients and 188 cancer-free Chinese men. Results: The c.910A>G variant in the exon9 of XRCC1 gene could be detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and DNA sequencing methods. Significantly increased susceptibility to prostate cancer was noted in the homozygote comparison (GG versus AA: OR=2.95, 95% CI 1.46-5.42, ${\chi}^2$=12.36, P=0.001), heterozygote comparison (AG versus AA: OR=1.76, 95% CI 1.12-2.51, ${\chi}^2$=4.04, P=0.045), dominant model (GG/AG versus AA: OR=1.93, 95% CI 1.19-2.97, ${\chi}^2$=9.12, P=0.003), recessive model (GG versus AG+AA: OR=2.17, 95% CI 1.33-4.06, ${\chi}^2$=8.86, P=0.003) and with allele contrast (G versus A: OR=1.89, 95% CI 1.56-2.42, ${\chi}^2$=14.67, P<0.000). Conclusions: These findings suggest that the c.910A>G polymorphism of the XRCC1 gene is associated with susceptibility to Pca in Chinese men, the G-allele conferring higher risk.

AR Interaction Design Mode of Multi-user and Multi-character in Theme Parks

Zhou Xin,Younghwan Pan 대한인간공학회 2019 大韓人間工學會誌 Vol.38 No.6

Objective: This paper expounds the influencing factors of interactive experience combining users and character images, and clarifies the relationship between them, to create the multi-user and multi-character interactive design method and framework of the theme park based on augmented reality technology, which used to improve the satisfaction of the interaction between the user and the character. Background: In theme parks, the design mode of the user and character interaction based on augmented reality is usually digital display through head-mounted display or handheld device. The disadvantage of the AR platform is that the experience of individual users and conditions are limited, and the lack of multiple users and multiple characters to participate in the interactive process of the real environment. Method: Through the interactive experience survey and role image scene recognition survey and analysis of specific users of theme parks, combined with the interactive design development needs of theme parks, the analysis and information architecture of multi-user interaction requirements based on the combination of real-world environment and characteristic role image based on AR technology Combing, build multimodal interaction design structure and dynamic behavior patterns. Results: Interaction Design model of multi-user and multi-character based on AR technology interaction, helps meet user expectations and interaction needs. It creates a solution for multi-user and multi-character interaction in the theme park, so that users don"t have to worry about any equipment, thus creating the walk-in game experience, and the expertise of multimodal is also more accessible for users to high engage in the theme park with character interaction. Conclusion: AR based multi-user and multi-character interaction design model can give full play to the effects of AR technology and provide a general solution to the limitations of theme parks" character interaction design that can emulate in specific interaction scenarios. And complements the academic research on multi-user and multi-role in theme parks in theory filed. Application: In this situation, one thing is predictable: the interactive design model developed in this study can apply to user and character interaction in various theme parks, which is helpful for brand identification and character communication of different theme parks.

Effects of Bacterial Cellulose Whisker Melting Composite on Crystallization and Mechanical Properties of PHBV Composites

Zhou Xin Ting,Liu Jin Yan 한국고분자학회 2022 Macromolecular Research Vol.30 No.5

Acetylation of bacterial cellulose whisker (BCW) with acetic anhydride can effectively improve the thermal stability of BCW and the dispersion of interface compatibility with PHBV. The influence of the modified cellulose whiskers on the crystallization and mechanical properties of the PHBV matrix was studied using differential scanning calorimetry (DSC), polarization optical microscopy (POM), and XRD. The results show that ABCW has heterogeneous nucleation and hindrance effect on the PHBV matrix simultaneously. With the increase of ABCW content, PHBV gradually decreases from large spherulite and then increases, and the crystallinity decreases. When the content of ABCs is 1.2%, ABCW has the best strengthening effect on PHBV, and the bending strength and bending modulus are 44.7% and 34.5% higher than PHBV.

자크 라캉의 거울 단계와 폭력에 관한 분석: 영화 <범죄 도시 2>를 중심으로

Zhou Xin,최원호 사단법인 한국융합기술연구학회 2023 아시아태평양융합연구교류논문지 Vol.9 No.3

Jacques Lacan's theory of the Mirror Stage, proposed in 1936, addresses the relationship between moi identification and recognition and has far-reaching implications for understanding the reality depicted in the film. It also provides a valuable perspective on the connection between the individual and their conception of the world, uncovering human’s fantasme around moi. Lacan posits that moi is a result of identification Identifizierung based on narcissisme Narzissmus, and that the aggressive self generated by this identification pattern creates tension between the two, resulting in human obsessions and serving as the source of social conflict in humanity. Through the use of compelling violence in characters and scenes in the film "The Roundup(2022)," this paper explores the significance of the Mirror Stage in examining, comprehending, and addressing violence. 자크 라캉(Jacques Lacan)의 거울 단계(mirror stage) 이론은 주체의 무의식 형성과 이미지가 주체에게 작용하는 과정을 해석할 수 있는 주요한 개념이다. 또한, 주체와 세계에 대한 상상과 이미지에 대한 큰 시사점을 제공했으며, 주체의 환상성(fantasme)을 설명하는데 크게 기여하였다. 라캉에 따르면, 자아는 나르시시즘(narcissisme Narzissmus)의 동일시(identification Identifizierung)에서 비롯된 것이며, 나르시시즘의 동일시에서 자아의 공격성(aggressivité)이 형성된다고 하였다. 즉 나르시시즘과 공격성은 주체를 형성하고, 나아가 주체들간의 충돌과 갈등을 야기하는 원인이 된다. 본 논문에서는 라캉의 거울 단계에 대한 개념을 바탕으로 주체의 폭력성을 해석하고, 나아가 <범죄 도시 2>의 사례를 통해 폭력을 통한 주체성에 대해 연구하고자 하였다.