排序方式: 共有15条查询结果,搜索用时 31 毫秒
1.
Yiling Jiang Kazuko Taniguchi Tanaz Petigara Machiko Abe 《Journal of medical economics》2018,21(7):687-697
Objective: In Japan, the National Immunization Program (NIP) includes PPV23 as the primary vaccination for adults and catch-up cohorts. The Japanese Association for Infectious Diseases recommends revaccination for older adults who received primary vaccination ≥5 years earlier. The cost-effectiveness of adding revaccination and/or continuing catch-up vaccination in the NIP was evaluated from the public payer perspective in Japan.Methods: The Markov model included five health states: no pneumococcal disease, invasive pneumococcal diseases (IPD), non-bacteremic pneumococcal pneumonia (NBPP), post-meningitis sequelae, and death. Cohorts of adults aged 65–95 were followed until age 100 or death: 2014 cohort (aged 65–95, vaccinated: 2014); 2019 cohort (aged 65: 2019); and 2019 catch-up cohort (aged 70–100: 2019, unvaccinated: 2014). Strategies included: (1) vaccinate 2014 and 2019 cohorts; (2) vaccinate 2014 and 2019 cohorts and revaccinate both; (3) strategy 1 and vaccinate 2019 catch-up cohort; (4) strategy 2 and vaccinate 2019 catch-up cohort; and (5) strategy 4 and revaccinate 2019 catch-up cohort. Parameters were retrieved from global and Japanese sources, costs and QALYs discounted at 2%, and incremental cost-effectiveness ratios (ICERs) estimated.Results: Strategy 1 had the highest number of IPD and NBPP cases, and strategy 5 the lowest. Strategies 3–5 dominated strategy 1 and strategy 2 was cost-effective compared to strategy 1 (ICER: ¥1,622,153 per QALY gained). At a willingness-to-pay threshold of ¥5 million per QALY gained, strategy 2 was cost-effective and strategies 3–5 were cost-saving compared to strategy 1.Conclusions: Strategies including revaccination, catch-up, or both were cost-effective or cost-saving in comparison to no revaccination and no catch-up. Results can inform future vaccine policies and programs in Japan. 相似文献
2.
Kenshi Itaoka Aya Saito Alan Krupnick Wiktor Adamowicz Taketoshi Taniguchi 《Environmental and Resource Economics》2006,33(3):371-398
The objective of this study is to estimate willingness to pay (WTP) for the reduction of mortality risks caused by fossil
fuel (natural gas, coal and oil) versus nuclear electric power generation systems and to examine the influence of risk characteristics
involved with electric power generation on WTP. A choice experiment was conducted to achieve these objectives. The attributes
for nuclear risks in the experiment included the probability of disasters and the expected losses if a disaster occurs. We
find evidence of (i) a baseline effect (where WTP is sensitive to hypothetical versus actual baseline expected mortality);
(ii) a ‘labeling effect,’ where, surprisingly, the term ‘nuclear’ has no effect on WTP, but the term ‘fossil-fueled power
generation’ results in lower WTP; and (iii) disaster aversion, meaning that people focus on the conditional loss from a nuclear
disaster, not the probability. We also find that the WTP for reducing deaths from a nuclear disaster is about 60 times the
WTP for routine reducing fossil-fuel generation-related deaths. 相似文献
3.
Tadashi Yamada Koji Imai Takamasa Nakamura Eiichi Taniguchi 《Transportation Research Part E: Logistics and Transportation Review》2011,47(6):887-907
This paper presents a supernetwork equilibrium model integrating supply chain networks with a transport network, namely, a supply chain-transport supernetwork equilibrium model. The model takes into account the behaviour of freight carriers and transport network users to endogenously determine the transport costs generated in the supply chain networks. The interaction between transport network and supply chain networks can also be examined. Results of the numerical tests reveal that the improvement of transport network could enhance the efficiency of supply chain networks. The paper makes contributions to modelling of supply chain networks as well as to that of transport networks. 相似文献
4.
Yasunori Fujikoshi Kimio Morimune Naoto Kunitomo Masanobu Taniguchi 《Journal of econometrics》1982,18(2):191-205
In this paper asymptotic expansions are derived for the density functions of the TSLS and LIML estimates of coefficients in a simultaneous equation system when the sample size increases and the effect of the exogenous variables increases along the sample size. These approximations are used to compare the asymptotic moments of the TSLS and LIML estimates and the concentration of probability around the true value of the estimates. 相似文献
5.
The impacts of access to roads on subjective well‐being at the household level are empirically examined using Timor‐Leste's nationally representative surveys. This paper examines not only the quantity, but also the quality of road infrastructure and, thus, extends existing studies that only consider the benefits of road accessibility. It is found that proximity to main roads may not necessarily result in improved welfare. Instead, ensuring all‐weather access to roads appears to be a more significant factor in raising household well‐being. Specifically, road accessibility during the rainy season reduces the probability of households reporting a ‘less than adequate’ (low satisfaction) response by 13–25 percent. This suggests that in Timor‐Leste, and likely in other developing economies under similar conditions, maintenance of existing roads is more essential to well‐being than building more roads. 相似文献
6.
Masanobu Taniguchi Alexandre Petkovic Takehiro Kase Thomas DiCiccio Anna Clara Monti 《European Journal of Finance》2015,21(13-14):1091-1112
In this paper, we study issues related to the optimal portfolio estimators and the local asymptotic normality (LAN) of the return process under the assumption that the return process has an infinite moving average (MA) (∞) representation with skew-normal innovations. The paper consists of two parts. In the first part, we discuss the influence of the skewness parameter δ of the skew-normal distribution on the optimal portfolio estimators. Based on the asymptotic distribution of the portfolio estimator ? for a non-Gaussian dependent return process, we evaluate the influence of δ on the asymptotic variance V(δ) of ?. We also investigate the robustness of the estimators of a standard optimal portfolio via numerical computations. In the second part of the paper, we assume that the MA coefficients and the mean vector of the return process depend on a lower-dimensional set of parameters. Based on this assumption, we discuss the LAN property of the return's distribution when the innovations follow a skew-normal law. The influence of δ on the central sequence of LAN is evaluated both theoretically and numerically. 相似文献
7.
Kun Young Chung John W. Eichenseher Teruso Taniguchi 《Journal of Business Ethics》2008,79(1-2):121-132
This paper reports the results of a survey of 842 undergraduate business students in four nations – the United States of America
(the USA), the Peoples’ Republic of China (the PRC), Japan, and the Republic of Korea (the ROK). This survey asked students
to respond to four scenarios with potentially unethical business behavior and a string of questions related to the importance
of ethics in business strategy and in personal behaviors. Based on arguments related to differences in recent historical experiences,
the authors suggest that student responses may be as different within the East Asian (Confucian) environment as they are between
this environment as a whole and the USA. Survey results indicate a greater perception of ethical problems and more importance
placed on ethics per se in business practices, as well as less of an emphasis on social harmony (a key distinguishing characteristic of Confucian
values identified in prior research) on the part of USA students. At the same time, substantial national differences in response
are also witnessed within the set of East Asian students. A priori expectations as to the manner in which these East Asian responses should vary based on differences in recent historical experiences
are partially, but not fully, supported. The authors argue that the key value of the reported research rests on a demonstration
that national differences within a common cultural (e.g., East Asian or Confucian) area can be as great as differences across cultural (East vs. West) areas and that practitioners
of global business must fine-tune their expectations as to acceptable business and personal actions to accommodate specific
national historical experiences to be effective.
Professors Chung and Eichenseher are professor of accounting at their respective universities. Professor Taniguchi's primary
field of study is economics. 相似文献
8.
This paper presents a Pareto-based bi-objective optimization of hazardous materials vehicle routing and scheduling problem with time windows and shows its application to a realistic hazardous material logistics instance. A meta-heuristic solution algorithm is also proposed, which returns a set of routing solutions that approximate the frontier of the Pareto optimal solutions based on total scheduled travel time and total risk of whole transportation process. It works in a single-step fashion simultaneously constructing the vehicle route and selecting the optimal paths connecting the routed locations from a set of non-dominated paths obtained in terms of travel time and risk value. 相似文献
9.
Tomoyuki Amano Masanobu Taniguchi 《Journal of econometrics》2011,165(1):20-29
The sample mean is one of the most natural estimators of the population mean based on independent identically distributed sample. However, if some control variate is available, it is known that the control variate method reduces the variance of the sample mean. The control variate method often assumes that the variable of interest and the control variable are i.i.d. Here we assume that these variables are stationary processes with spectral density matrices, i.e. dependent. Then we propose an estimator of the mean of the stationary process of interest by using control variate method based on nonparametric spectral estimator. It is shown that this estimator improves the sample mean in the sense of mean square error. Also this analysis is extended to the case when the mean dynamics is of the form of regression. Then we propose a control variate estimator for the regression coefficients which improves the least squares estimator (LSE). Numerical studies will be given to see how our estimator improves the LSE. 相似文献
10.
Yasuo Hirose Shinsuke Ohyama Ken Taniguchi 《Journal of the Japanese and International Economies》2012,26(1):179-185
The premium on interbank money market rates arises over year-end periods as a result of the Japanese business practice of periodic settlement. This paper examines to what extent the Bank of Japan’s liquidity provision reduced the year-end premium in Japan. We find that the funds-supplying operations over the year-end and the fiscal year-end of 2008 had the largest effects during the period from 2006 to 2008, reflecting the fact that the Bank of Japan significantly expanded liquidity provision in response to the decrease in market liquidity under the financial turmoil. 相似文献