全文获取类型
收费全文 | 548篇 |
免费 | 15篇 |
专业分类
管理学 | 312篇 |
民族学 | 3篇 |
人口学 | 5篇 |
丛书文集 | 29篇 |
理论方法论 | 8篇 |
综合类 | 127篇 |
社会学 | 24篇 |
统计学 | 55篇 |
出版年
2024年 | 1篇 |
2022年 | 2篇 |
2021年 | 9篇 |
2020年 | 7篇 |
2019年 | 1篇 |
2018年 | 9篇 |
2017年 | 11篇 |
2016年 | 10篇 |
2015年 | 7篇 |
2014年 | 16篇 |
2013年 | 101篇 |
2012年 | 19篇 |
2011年 | 39篇 |
2010年 | 21篇 |
2009年 | 20篇 |
2008年 | 15篇 |
2007年 | 17篇 |
2006年 | 16篇 |
2005年 | 8篇 |
2004年 | 6篇 |
2003年 | 10篇 |
2002年 | 11篇 |
2001年 | 14篇 |
2000年 | 8篇 |
1999年 | 5篇 |
1998年 | 7篇 |
1997年 | 5篇 |
1996年 | 10篇 |
1995年 | 7篇 |
1994年 | 11篇 |
1993年 | 14篇 |
1992年 | 16篇 |
1991年 | 20篇 |
1990年 | 10篇 |
1989年 | 16篇 |
1988年 | 14篇 |
1987年 | 10篇 |
1986年 | 6篇 |
1985年 | 10篇 |
1984年 | 5篇 |
1983年 | 7篇 |
1982年 | 5篇 |
1981年 | 5篇 |
1980年 | 2篇 |
排序方式: 共有563条查询结果,搜索用时 287 毫秒
31.
本文分析了生产方式变革和消费需求升级及其矛盾对流通产业演进的影响,指出“生产方式引致的大量化”和“消费需求引致的大量化”在时间、空间、集散等方面发生的矛盾是推动流通不断演化与发展的动力。通过构建浙江流通演进的动力模型,实证分析“生产方式引致的大量化”和“消费需求的大量化”的相关系数为0.741,两者对浙江流通演进均具有正向促进作用,路径系数分别为0.68和0.42,前者的作用大于后者。 相似文献
32.
正确解读统计指标是准确理解和把握统计数据意义的关键所在。本文从指标的名称、定义、计算方法、空间规定和基础指标获得方式等方面,对OECD国家的工业生产发展速度指标进行了全面解读,以期从中得出经验与启示。 相似文献
33.
Two heuristics based on branch and bound (B&B) are developed to solve closed-loop material requirements planning (MRP) lot-sizing problems that have general product structures and variable costs. A “look ahead method'’(LAM) heuristic allows for variable production/purchasing costs and uses a single-level B&B procedure to rapidly improve lower bound values; thus, LAM efficiently uses computer-storage capacity and allows solution of larger problems. The “total average modification'’(TAM) heuristic uses B&B, applied level by level, and modified setup and carrying costs to solve the variable production/purchasing costs MRP lot-sizing problem. LAM and TAM are tested on problems and compared to heuristics in the literature. TAM may be used to solve large MRP lot-sizing problems encountered in practice. 相似文献
34.
In a recent paper, Pinto and Mabert [5] presented a lot-sizing rule and an improvement procedure for the joint lot-sizing problem with zero setup costs. We show that this procedure often yields infeasible schedules. We also present and discuss two interesting properties of the joint lot-sizing problem with zero setup costs. A numerical example to illustrate the second property is provided. 相似文献
35.
The advent of the wide variety of new, highly integrated, advanced manufacturing technologies available for acquisition by a firm's managers has brought to light an accompanying set of unexpected issues. These issues include expectations for the benefits and costs of these technologies, determining the appropriate order of implementation and finding a way to justify acquisition when many of the benefits are a function of the technology's learning and synergistic effects on other operations and technologies. We present here a model that captures the interaction effects of these highly integrated technologies and discuss the data requirements for application of the construct. We then illustrate the model's workings with a number of multitechnology examples and show the danger of ignoring the synergistic and learning effects of these technologies when considering their acquisition. 相似文献
36.
An integer linear programming model is presented for the scheduling of n products on m identical machines. The particular problem studied is one that occurs frequently in the fiberglass and textile industries. The model incorporates setup costs, lost production costs, and overtime costs. Due to the structure of the model, integer solutions can be obtained by explicitly restricting only a small number of the integer variables. This allows those responsible for scheduling to solve realistically sized problems in an efficient manner. Computational results are provided for a set of generated test problems. 相似文献
37.
Roger J. Gagnon 《决策科学》1988,19(2):453-471
Teaching an operations design course has major pedagogical challenges. (1) The design topics—output, process, facility, and work design—are necessarily taught sequentially, yet the decisions are integrative. (2) Instruction must be generic to service or product producers. (3) Discussing output design is difficult since students typically have had no exposure to the “product language” of engineering graphics. (4) No text is available which examines in sufficient depth all the operations design decisions. (5) Cases necessarily depict historical situations—process technologies and economic data—while operations managers must plan future directions for their productive systems. (6) While the commercial world contains fresh information and data, students are inexperienced in obtaining knowledge from the real world. (7) While the course presents an operations management perspective, students must recognize the information, data, and cooperation necessary from the other functional areas to successfully complete the operations design. To help overcome these seven pedagogical challenges, the students in the undergraduate and graduate operation design courses complete a comprehensive feasibility study for a new product or service and the entire productive system. 相似文献
38.
Marilyn K. McClelland 《决策科学》1988,19(4):858-879
Previous research on material requirements planning (MRP) systems has rarely considered the impact of the master production scheduling method used to promise customer orders and to allocate production capacity. Based on a simulation study of an MRP environment, we show that the correct selection of a master production schedule (MPS) method depends on the variance of end-item demand. In addition, we find evidence that the effectiveness of a particular MPS method can be enhanced by holding buffer inventory at the same level in the product structure as in the MPS. 相似文献
39.
This paper addresses the problem of open order rescheduling in a job shop. Results are reported of experiments conducted in a simulation model of an 8-machine job shop. Four different order updating policies are examined. The due-date process is modeled to include several realistic features about the pattern of due-date variability. These features are parameterized and tested at several levels. Tardiness results indicate that open order rescheduling is beneficial only when allowances are loosely set. The results indicate that inventory performance is improved by order rescheduling, particularly in cases when due dates are revised to earlier times than originally forecast. 相似文献
40.
Julia Khan 《The Asia Pacific Journal of Anthropology》2018,19(3):197-213
After independence from the Soviet Union, Kazakhstan proclaimed Kazakhs the title ethnic group, and the Kazakh language the national language. This deprived the Russian-speaking population of its former dominant social position. Being a Russian-speaking citizen of Kazakhstan, the daughter of a half-Korean half-Russian father and a half-Kazakh half-German mother, I did my field work as a presumed ‘native’ anthropologist at Kazakhstan State University with linguistically divided groups of students. The relations between the field and the researcher disclosed different geopolitical realities of knowledge production and challenged the legacy of relativist methodology. I reflect on this experience and examine different conceptualisations of the native positionality in the post-Soviet context. Reflections in this paper raise new questions about nation-building in post-socialist states and about ‘nativeness’ itself, and contribute to the criticism of postmodern theory. 相似文献