浅谈钻机顶部驱动技术发展趋势

顶驱装备装置发展至今已成为油气资源开采中必需的钻采装备,从顶驱近几年市场反馈情况分析,提高钻井能力、易操作维护,使用可靠、维护方便性、故障率低和安全性是客户最看重的问题,顶驱主要制造企业也在围绕这些方向进行专利布局,综合分析,智能钻柱扭摆系统设计技术,智能化顶驱主轴精准定位技术和旋转头、下筒体旋转工装加工技术是顶驱主要发展技术。

领会精神 敢于担当 创新发展——学习贯彻习近平总书记给企业家的回信

要切实发挥市场在资源配置中的决定性作用,坚持和完善公有制为主体、多种所有制共同发展的基本经济制度,毫不动摇地巩固和发展公有制经济,鼓励、支持、引导非公有制经济发展,积极发展混合所有制经济,促进各种所有制资本取长补短、相互促进、共同发展。习总书记回信再次向企业界指出各级政府正在加快转变职能、大力简政放权,目的之一就是让市场更好发力,让企业创新创造源泉更加充分涌流,这是又一次重要的"松绑"放权。

Port Integration in China: Temporal Pathways, Spatial Patterns and Dynamics

Over the past two decades, numerous ports located in China have participated in port integration strategies, thus influencing the entire port system. The current research is initiated in order to examine the nature of port integration in China, including associated temporal pathways, spatial patterns and dynamics. Results indicate that port integration in China has been characterized by a significant increase at the turn of the 21 st century, comprising thirteen distinguishable pathways typified by differing dynamics, particularly between the northern and southern ports. Pathways were found to include 44 seaports and river ports, chiefly concentrated in the Bohai Rim, Yangtze(Changjiang) River Delta, Beibu Gulf and the southeastern Fujian, thus representing significant spatial regions. Categorically larger seaports have become the primary beneficiaries of port integration. Integration cases were divided into four categories based upon quantified dynamic magnitude including the government-driven mode, market-driven mode, government/market-driven mode and strategic alliance, and into five further categories based upon spatial extent including port internal integration, jurisdictional port integration, port integration across neighbor region, regional port integration and hub-feeder port integration. Results suggest that several factors have effectively driven port integration in China, including legislative tools and spatial planning, optimization of shoreline resources and port functionality, and port competition with the same hinterland.

Combining Market-Based Control with Distribution Grid Constraints when Coordinating Electric Vehicle Charging

The charging of electric vehicles(EVs) impacts the distribution grid, and its cost depends on the price of electricity when charging. An aggregator that is responsible for a large fleet of EVs can use a market-based control algorithm to coordinate the charging of these vehicles, in order to minimize the costs. In such an optimization, the operational parameters of the distribution grid, to which the EVs are connected, are not considered. This can lead to violations of the technical constraints of the grid(e.g., undervoltage, phase unbalances); for example, because many vehicles start charging simultaneously when the price is low. An optimization that simultaneously takes the economic and technical aspects into account is complex, because it has to combine time-driven control at the market level with eventdriven control at the operational level. Diff erent case studies investigate under which circumstances the market-based control, which coordinates EV charging, conflicts with the operational constraints of the distribution grid. Especially in weak grids, phase unbalance and voltage issues arise with a high share of EVs. A low-level voltage droop controller at the charging point of the EV can be used to avoid many grid constraint violations, by reducing the charge power if the local voltage is too low. While this action implies a deviation from the cost-optimal operating point, it is shown that this has a very limited impact on the business case of an aggregator, and is able to comply with the technical distribution grid constraints, even in weak distribution grids with many EVs.

The Information Risk in the Latest Crisis： A Driver or a Driven Factor for Global Financial Markets Equilibrium？

The latest financial crisis has been impressive for strength, impact, duration, and reduced efficacy of the economic and financial policies adopted by the authorities. We use an original information risk model to contribute to the analysis of the crisis and to suggest some approaches for a possible early diagnosis. Using data referred to the three main financial markets and comparing the latest crisis with the previous one and with long-term quantitative evidence, we find out that the 2007-2009 crisis was very different in the information risk quality. That gap affected the market risk aversion and its equilibrium, reducing the efficacy of the authorities＇ intervention tools mainly based on payoff risk control and efficient market restoration. Since information risk is an endogenous element of the market dynamics that can be independent form contingent levels of market efficiency. Drivers of information risk in the European Markets differed strongly from the US and Japanese ones; that is why some global decisions had low impact while opportunities of local intervention were missed.

Driving Forces of Private Equity Investment in China： Case Studies of Private Entrepreneurship

In search of private equity investment opportunities in China, one would be astonished by the rise of raw private entrepreneurship in this largest emerging market economy in the world. The country is experiencing a transition from a planned, socialist economy to a market or mixed economy. The emergence of a significant private sector is one of the most important developments of the market-oriented reforms in China over the last quarter of a century. It is true that the transformation of public ownership into private ownership indeed gave a rise to the new private enterprises. Nevertheless, there is also an origination process of genuine private enterprises parallel to this privatization approach. In this paper, the concept of raw entrepreneurship is introduced to distinguish new, green-field private firms from the rest of the private sector that has emerged from older firms that have been converted from SOEs （state-owned enterprises） or COEs （collectively-owned enterprises）. It is also a concept that stresses the highly innovative manner in which private firms have emerged in China. This paper will explore deeply the concept of raw entrepreneurship through three case studies as well as theoretical analysis based on traditional wisdom.

Design of Scenery Complementary Solar Water Heater Based cm Eddy Current Method

This paper uses scenery complementary heating method to discuss a new type of scenery complementary water heater design. This product can be divided into two parts. The first part is the eddy current method wind power heating part, which is driven by wind power and vertical axis wind turbines and the design of magnet array rotor disc rotation, namely, magnetic field rotating, induced eddy current in the stator, so as to generate heat. The second part is the solar heating part. This works has broad market prospect, which provides a new idea for large-scaled heating method.

Key Technology Analysis for Driver Support Systems in Japan

This paper presents the technical survey and the trend analysis of the driver support technologies such as a pre-crush braking system in Japan. In the first part, Vehicle Intelligence to assist drivers is defined by two objective functions which are both TGA （Target Generation Agent） and TAA （Target Accomplishment Agent）. TAA is mainly based on the conventional technologies that are braking smoothly, or driving with lower fuel consumption. On the other hand, TGA has the intelligent function instead of human drivers. The actual TGA are explained using some concrete driver support systems. After that, Japanese market introduction date and evolution of driver support systems are discussed with clarifying cognitive aspects which are the perception support, the judgment support and the execution support. And Key technologies underlying evolution of driver support systems are explained. Finally the author concludes that the knowledge and insights needed for intelligent driver support systems will be much more complex than in the case of autonomous vehicles that drive themselves.

Development of Conceptual Framework for Knowledge Management Process

Knowledge has become one of the most important driving forces for business success. Organizations are becoming more knowledge intensive. Many firms in the global market are aware of this, and they try to explore the field of knowledge management （KM） in order to improve and sustain their competitiveness. Knowledge has always been the central in the functioning of society. However, in today＇s ＂knowledge economy＂, organizations are increasingly aware of the need for a ＂knowledge focus＂ in their organizational strategies as they respond to changes in the environment. The aim of this paper is to describe the theoretical concepts and approaches of KM process that could be implemented in organizations by reviewing KM process theories and present suggestions for what a general process should include based on analysis of various models presented in KM. The main emphasis is laid upon the concept of goal definition review, validation, and knowledge training processes in order to make sure that KM process initiative will deliver competitive advantage to the organization.

Could Innovation be Driven by Globalization？

This paper examines the critical role of globalization as a driver for innovation. The introduction of the global strategy quadruple model truly links the three known strategy perspectives （namely, industry competition, resources and institution views） and performance. The model could assist in advancing the cause of sustainable competitive advantages. This study could assist scholars in addressing the three important research questions： （1） Why are some finns more innovative than others？ （2） What effects do product, firm, industry, and market innovativeness have on business performance？ and （3） Does the link between innovativeness and business performance depend on all or some of the innovativeness factors of product, firm, industry, and market？ The presented set of four hypotheses, when tested, will result in a better understanding of the links and relationships among a firm＇s global strategy, innovativeness, and business performance. The quadruple model presented can be used to examine these relationships in general and in the context of innovation. It is anticipated that this paper will assist researchers, business management, and analysts in developing global innovation strategies.