Assembly FG: An Educational Case on MRP II Integrated within ERP

This case teaches students how discrete (job order) manufacturing companies use Manufacturing Resource Planning (MRP II) within Enterprise Resource Planning (ERP) systems to plan purchase orders for direct materials and shop orders for work‐in‐process and finished goods. Students simulate MRP II integrated within ERP, using Microsoft Excel to learn MRP II's bill‐of‐materials (BOM) Explosion that plans order quantities and MRP II's scheduling logic that uses lead‐times to determine start dates for planned orders. Students explain why MRP II is most practical and effective when executed within ERP and how MRP II can reduce excess inventories, prevent inventory shortages, and help companies deliver quality products to customers on schedule. Also, students explain why BOM, inventory, and lead‐time inaccuracies can adversely affect the accuracy of MRP II‐planned replenishments and identify controls that reduce the risks of these inaccuracies.     

资源禀赋、环境规制会促进制造业绿色发展？

基于制造业绿色转型发展的视角,在梳理解析资源禀赋、环境规制与制造业绿色发展内涵及理论关系的基础上,通过构建制造业绿色发展影响要素的动态面板数据计量模型,实证考察 了全国层面及长江三角洲、泛珠江三角洲和环渤海经济带内资源禀赋、环境规制对制造业绿色发 展的作用机理。研究结果表明,在全面层面资源禀赋对制造业绿色发展呈正向作用,环境规制在 短期内对制造业绿色发展呈负向冲击效应,并能对资源禀赋弹性产生抵消作用,但长期来看则能 释放资源比较优势的发挥,并与制造业绿色发展呈“U”型关系;在各经济带检验中,资源禀赋 与环境规制对制造业绿色发展的直接效应呈差异化影响,其中资源禀赋在长江三角洲制造业绿色 发展中表现为负向效应,环境规制在环渤海经济带制造业绿色发展中呈正向效应,长期内环境规 制在泛珠江三角洲和环渤海经济带制造业绿色发展中呈现为“U”型关系。     

Analyst Firm Coverage and Forecast Accuracy: The Effect of Regulation Fair Disclosure

In this study, we revisit the relationship between analyst firm coverage and forecast accuracy. In contrast to the proposed negative association in Clement (1999) owing to the portfolio complexity effect, we hypothesize an ‘economy‐of‐scale effect’ that is likely to dominate when analysts rely mostly on public information. In support of the latter effect, we find a positive association between firm coverage and forecast accuracy after the enactment of Regulation Fair Disclosure (Reg FD), which substantially reduces the flow of material private information to analysts. Such a result survives a battery of robustness analyses. We further show that, in the post‐Reg FD period, covering more firms increases an analyst's probability of being selected as a star analyst in the subsequent year. Overall, our findings highlight the importance of the information environment in shaping the economic link between an analyst's firm coverage and forecast accuracy.     

产业集聚、资源错配与环境治理的协同效应分析

解决经济增长与环境污染之间的矛盾是新时期我国经济发展过程中的重要任务,产业分散以及资源错配被认为是助长环境污染的重要诱因。论文基于2010—2018年省级面板数据,实证检验了产业集聚、资源错配与环境污染之间的关系,研究结果表明:整体来看产业集聚会减少污染物的排放,但在产业发展初期,集聚在一定程度上会增加污染物的排放;资源错配与污染物排放显著负相关,经过一系列稳健性检验,这一结论仍然成立;产业集聚有利于减少资源错配,提高资源分配效率,从而减少环境污染,产业集聚与资源配置在环境治理过程中会产生正向协同效应。     

并购对企业R&D投资的挤出效应研究——基于并购前后资产负债率变动的视角

创新是企业内涵式的增长方式,并购是企业外延式的增长方式。在资源有限的情况下,企业如何在这两种战略之间进行权衡?本文以2007-2018年沪深A股上市公司为研究样本,发现如果并购引起企业资产负债率增加,则会对并购后的R&D投资形成"财务侵占",从而对研发产生负面影响;这种抑制作用在主并企业存在融资约束的情况下会更加显著;按企业特征划分,这种抑制作用主要存在于小企业和民营企业。研究结果为基于边界条件的并购如何影响企业创新绩效提供了实证证据,同时也为企业进行相关战略变更和投资决策提供了有益参考。     

Overall survival,costs, and healthcare resource use by line of therapy in Medicare patients with newly diagnosed metastatic urothelial carcinoma

Aims: Medicare patients with metastatic or surgically unresectable urothelial carcinoma (mUC) often receive platinum-based chemotherapy as first line of therapy (LOT), but invariably progress, requiring additional LOTs and healthcare resource use (HCRU). To better understand the evolving mUC treatment landscape, the economic burden of chemotherapy-based mUC treatments among US Medicare patients was estimated.

Methods: Newly diagnosed Medicare patients with mUC were identified from the Surveillance, Epidemiology, and End Results (SEER)-Medicare database. Patients were followed from diagnosis to death, disenrollment, or end of study to characterize LOTs (first [LOT1], second [LOT2], and third or greater [LOT3+]). Kaplan-Meier methods were used to estimate overall survival (OS) by LOT. HCRU and mean costs were reported over the follow-up period, LOT duration, and maximum LOT received.

Results: Among 1,873 eligible patients with mUC (median age?=?77?years; median follow-up?=?7.5?months), 1,035 (55%) received no chemotherapy. Among chemotherapy-treated patients, 61% had LOT1 only, 25% had LOT1 and LOT2 only, and 14% had LOT3+. Median OS was 8.1?months, range was 4.3 (untreated) to 29.8 (LOT3+) months. HCRU frequency increased with additional LOTs. Mean cumulative per-patient cost was $82,912 for all patients, increasing with additional LOTs (untreated?=?$57,207; LOT1?=?$99,213; LOT2?=?$125,190; LOT3+?=?$163,884). Mean per patient per month cost was $18,827 for all patients, decreasing with increasing number of LOTs received (untreated?=?$27,211; LOT1?=?$9,601; LOT2?=?$7,325; LOT3+?=?$6,017).

Limitations: Potential for treatment misclassification when using the algorithm defining LOTs and non-generalizability of results to younger patients.

Conclusions: Over 50% of Medicare patients with mUC received no chemotherapy. Among chemotherapy-treated patients, most received only one LOT. Additional LOTs led to higher mean costs and HCRU, but as patients were followed longer, monthly costs decreased. As treatments evolve to include immuno-oncology agents, these findings provide a clinically relevant economic benchmark for mUC treatment across different traditional LOTs.     

人力资源激励中的市场营销思想

从市场营销学的角度看待企业的人力资源激励活动,把人力资源激励活动看成一种营销活动,视薪酬为激励的"核心产品",将定价、促销策略、营销渠道、"以顾客为中心"等理念贯穿于人力资源激励活动中,使企业的人力资源激励工作多元化,促进企业人力资源管理的发展。     

国有企业财务管理目标的探析

针对国有企业同时具有企业性和社会性两重属性的特征 ,提出了国有企业应当在充分考虑社会责任的基础上 ,建立“以相关者利益最大化”为终极目标或根本性目标 ,以“企业价值最大化”、“社会贡献最大化”为中间目标或过渡性目标 ,以“资产剩余利润率最大化”、“成本最小化”、“社会贡献指标最佳化”为具体目标或执行性目标的新观点 ,以求在限定的社会资源成本下国有企业的社会性目标和企业性目标达到最佳结合 ,从而实现社会财富的最大化     

Optimal harvesting of a spatial renewable resource

In this paper we investigate the optimal harvesting of a renewable natural resource. While in most standard approaches the resource is located at a single point, we allow the resource to be distributed spatially. Consequently, an agent who exploits the resource has to travel from one location to another. For a fixed planning horizon, we investigate the speed and the path of harvesting chosen by the agent. We show that the agent adjusts this speed so as to visit each location only once, even in the absence of travelling cost. Since the agent does not return to any location for a second harvest, it is optimal to fully deplete the resource upon arrival. A similar type of bang–bang solution results when we drop the assumption of a constant harvesting rate: allowing for a variable harvesting rate, the agent chooses to fully exploit the resource either in the last or in the first travelling period. A society interested in conserving some of the resource thus has to take measures to limit the exploitative behaviour of the agent.