scholarly journals Leapfrogging Under A Sequential Investment Strategy

2018 ◽  
Vol 34 (3) ◽  
pp. 437-446
Author(s):  
Hyung Rok Yim
Keyword(s):  
Firm Value ◽  
Large Scale ◽  
Production Efficiency ◽  
Economies Of Scale ◽  
Investment Strategy ◽  
Technology Shocks ◽  
Long Run ◽  
Korean Parents ◽  
Production Technologies

A common FDI pattern observed across Korean parents investing in China is that they invest sequentially. Revoking that Korean parents are intended to achieve production efficiency in China, the economies of scale of a sequential investment strategy is relatively lower compared to a large scale one-shot investment; however, the latest production technologies can be applied to sequentially established subsidiaries, which can open a strategic pathway to leapfrog other competitors in the long run. A game model is constructed to demonstrate that as longer the Korean parents are expected to stay in China, they are better off by pursuing a sequential investment strategy. Unfortunately, this result does not mean that they can leapfrog competitors through sequential investment strategy. This can happen only when they begin with larger resource endowments. The model predicts that, under the lack of resources in establishing Chinese subsidiaries, Korean firms’ leapfrogging through sequential investment strategy can occur if technology shocks occur to follow-up investments after an initial investment is done. A scenario approach is performed to prove this prediction empirically. It turns out that the firm value of those Korean parents that pursue sequential investment strategy increases the most when the longer they operate in China and when their research and development investments are higher at the same time. Also, as they stay longer in China, they are intended to make more sequential investments.

scholarly journals Up in Smoke: The Influence of Household Behavior on the Long-Run Impact of Improved Cooking Stoves

2016 ◽  
Vol 8 (1) ◽  
pp. 80-114 ◽  
Author(s):  
Rema Hanna ◽  
Esther Duflo ◽  
Michael Greenstone
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Large Scale ◽  
Indoor Air Pollution ◽  
Smoke Inhalation ◽  
Gas Emissions ◽  
Long Run ◽  
Environmental Technologies ◽  
Common Laboratory

Laboratory studies suggest that improved cooking stoves can reduce indoor air pollution, improve health, and decrease greenhouse gas emissions in developing countries. We provide evidence, from a large-scale randomized trial in India, on the benefits of a common, laboratory-validated stove with a four-year follow-up. While smoke inhalation initially falls, this effect disappears by year two. We find no changes across health outcomes or greenhouse gas emissions. Households used the stoves irregularly and inappropriately, failed to maintain them, and usage declined over time. This study underscores the need to test environmental technologies in real-world settings where behavior may undermine potential impacts. (JEL D12, O12, O13, Q53, Q54, Q55)

Therapy of post-stroke depression – a systematic review

2013 ◽  
Vol 10 (02) ◽  
pp. 108-129 ◽  
Author(s):  
W. Gaebel ◽  
W. Wannagat ◽  
J. Zielasek
Keyword(s):  
Systematic Review ◽  
Large Scale ◽  
Repetitive Transcranial Magnetic Stimulation ◽  
Placebo Control ◽  
Post Stroke ◽  
Pharmacological Studies ◽  
Post Stroke Depression ◽  
Control Procedures ◽  
Antidepressant Pharmacotherapy

SummaryWe performed a systematic review of randomized placebo-controlled pharmacological and non-pharmacological trials for the therapy and prevention of post-stroke depression that have been published between 1980 and 2011. We initially identified 2 260 records of which 28 studies were finally included into this review. A meta-analytic approach was hampered by considerable differences regarding the kinds of therapeutic regimens and the study durations. Modest effects favoring treatment of post-stroke depression could be found for pharmacological treatment as well as repetitive transcranial magnetic stimulation. For the prevention of post-stroke depression, antidepressant pharmacotherapy showed promising results. However, large-scale studies with better standardized study populations, optimized placebo control procedures in non-pharmacological studies, and replication in larger follow-up studies are still necessary to find the optimal therapeutic regimens to prevent and treat post-stroke depression.

The Effect of the Familiarity of a Survey Sender on Response Outcomes in a Large-Scale Survey of Emergency Medical Services Agencies

2021 ◽  
Vol 44 (3) ◽  
pp. 260-267
Author(s):  
Morgan M. Millar ◽  
Hilary A. Hewes ◽  
Andrea L. Genovesi ◽  
Michael Ely ◽  
Braden Green ◽  
...  
Keyword(s):  
Emergency Medical Services ◽  
Large Scale ◽  
Nationwide Survey ◽  
Survey Response ◽  
Medical Services ◽  
Healthcare Organizations ◽  
Emergency Medical ◽  
Established Relationship ◽  
To Receive

Survey response is higher when the request comes from a familiar entity compared to an unknown sender. Little is known about how sender influences response to surveys of organizations. We assessed whether familiarity of the sender influences response outcomes in a survey of emergency medical services agencies. Emergency medical services agencies in one U.S. state were randomly assigned to receive survey emails from either a familiar or unfamiliar sender. Both deployment approaches were subsequently used nationwide, with each state selecting one of the two contact methods. Experimental results showed that requests from the familiar sender achieved higher survey response (54.3%) compared to requests from the unfamiliar sender (36.9%; OR: 2.03; 95% CI: 1.23, 3.33). Similar results were observed in the subsequent nationwide survey; in states where the familiar sender deployed the survey, 62.0% of agencies responded, compared to 51.0% when the survey was sent by the unfamiliar sender (OR: 1.57; 95% CI: 1.47, 1.67). The response difference resulted in nearly 60 additional hours of staff time needed to perform telephone follow-up to nonrespondents. When surveying healthcare organizations, surveyors should recognize that it is more challenging to obtain responses without a pre-established relationship with the organizations.

scholarly journals A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation

2021 ◽  
Vol 13 (14) ◽  
pp. 7998
Author(s):  
Maxime Binama ◽  
Kan Kan ◽  
Hui-Xiang Chen ◽  
Yuan Zheng ◽  
Daqing Zhou ◽  
...  
Keyword(s):  
Rotational Speed ◽  
Distribution Systems ◽  
Water Distribution ◽  
Production Efficiency ◽  
Operating Conditions ◽  
Energy Regulation ◽  
Speed Increase ◽  
Energy Field ◽  
Long Run ◽  
Study Results

The utilization of pump as turbines (PATs) within water distribution systems for energy regulation and hydroelectricity generation purposes has increasingly attracted the energy field players’ attention. However, its power production efficiency still faces difficulties due to PAT’s lack of flow control ability in such dynamic systems. This has eventually led to the introduction of the so-called “variable operating strategy” or VOS, where the impeller rotational speed may be controlled to satisfy the system-required flow conditions. Taking from these grounds, this study numerically investigates PAT eventual flow structures formation mechanism, especially when subjected to varying impeller rotational speed. CFD-backed numerical simulations were conducted on PAT flow under four operating conditions (1.00 QBEP, 0.82 QBEP, 0.74 QBEP, and 0.55 QBEP), considering five impeller rotational speeds (110 rpm, 130 rpm, 150 rpm, 170 rpm, and 190 rpm). Study results have shown that both PAT’s flow and pressure fields deteriorate with the machine influx decrease, where the impeller rotational speed increase is found to alleviate PAT pressure pulsation levels under high-flow operating conditions, while it worsens them under part-load conditions. This study’s results add value to a thorough understanding of PAT flow dynamics, which, in a long run, contributes to the solution of the so-far existent technical issues.

scholarly journals LABOR MARKET DYNAMICS UNDER TECHNOLOGY SHOCKS: THE ROLE OF SUBSISTENCE CONSUMPTION

2021 ◽  
pp. 1-29
Author(s):  
Sangyup Choi ◽  
Myungkyu Shim
Keyword(s):  
Labor Market ◽  
Business Cycle ◽  
Developing Economies ◽  
Structural Var ◽  
Market Dynamics ◽  
Technology Shocks ◽  
Structural Factors ◽  
Long Run ◽  
Labor Market Dynamics ◽  
Short Run

This paper establishes new stylized facts about labor market dynamics in developing economies, which are distinct from those in advanced economies, and then proposes a simple model to explain them. We first show that the response of hours worked and employment to a technology shock—identified by a structural VAR model with either short-run or long-run restrictions—is substantially smaller in developing economies. We then present compelling empirical evidence that several structural factors related to the relevance of subsistence consumption across countries can jointly account for the relative volatility of employment to output and that of consumption to output. We argue that a standard real business cycle (RBC) model augmented with subsistence consumption can explain the several salient features of business cycle fluctuations in developing economies, especially their distinct labor market dynamics under technology shocks.

scholarly journals Spatial Agglomeration of China’s Forest Products Manufacturing Industry: Measurement, Characteristics and Determinants

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1006
Author(s):  
Zhenhuan Chen ◽  
Hongge Zhu ◽  
Wencheng Zhao ◽  
Menghan Zhao ◽  
Yutong Zhang
Keyword(s):  
Spatial Distribution ◽  
Spatial Data ◽  
Large Scale ◽  
Manufacturing Industry ◽  
Economies Of Scale ◽  
Forest Products ◽  
Spatial Data Analysis ◽  
Forest Protection ◽  
Spatial Agglomeration ◽  
Continuous Space

China’s forest products manufacturing industry is experiencing the dual pressure of forest protection policies and wood scarcity and, therefore, it is of great significance to reveal the spatial agglomeration characteristics and evolution drivers of this industry to enhance its sustainable development. Based on the perspective of large-scale agglomeration in a continuous space, in this study, we used the spatial Gini coefficient and standard deviation ellipse method to investigate the spatial agglomeration degree and location distribution characteristics of China’s forest products manufacturing industry, and we used exploratory spatial data analysis to investigate its spatial agglomeration pattern. The results show that: (1) From 1988 to 2018, the degree of spatial agglomeration of China’s forest products manufacturing industry was relatively low, and the industry was characterized by a very pronounced imbalance in its spatial distribution. (2) The industry has a very clear core–periphery structure, the spatial distribution exhibits a “northeast-southwest” pattern, and the barycenter of the industrial distribution has tended to move south. (3) The industry mainly has a high–high and low–low spatial agglomeration pattern. The provinces with high–high agglomeration are few and concentrated in the southeast coastal area. (4) The spatial agglomeration and evolution characteristics of China’s forest products manufacturing industry may be simultaneously affected by forest protection policies, sources of raw materials, international trade and the degree of marketization. In the future, China’s forest products manufacturing industry should further increase the level of spatial agglomeration to fully realize the economies of scale.

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