• <tr id="yyy80"></tr>
  • <sup id="yyy80"></sup>
  • <tfoot id="yyy80"><noscript id="yyy80"></noscript></tfoot>
  • 99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

    尤瑟夫·齊達內(nèi):信任對項目績效有積極影響

    2021-01-16 02:54:54尉艷娟
    項目管理評論 2021年6期
    關(guān)鍵詞:瑟夫齊達內(nèi)黑天鵝

    尉艷娟

    尤瑟夫·齊達內(nèi)(Youcef J-T. Zidane)是一名精通多種語言的高級研究員,主要從事組織科學、管理和質(zhì)量工程方面的研究,曾在世界多個國家擔任項目經(jīng)理或項目總監(jiān)。他出版成果頗豐,在《國際商業(yè)項目管理期刊》(International Journal of Managing Projects in Business)等刊物上發(fā)表了大量文章。

    尤瑟夫·齊達內(nèi)認為,信任對項目績效有積極影響,客戶和項目團隊之間的高度信任有助于降低交易成本,最大限度地發(fā)揮創(chuàng)造力和解決問題的能力,從而為整個項目帶來收益。如何在成員之間建立和維護信任是虛擬團隊面臨的最大挑戰(zhàn)之一。在虛擬團隊成立的初始階段,信任可能以“快速信任”(Swift Trust)的形式存在,但這種信任很脆弱,可能會很快消失,團隊領(lǐng)導者應(yīng)該抓住這種信任的“小火花”,將其培養(yǎng)成最高級別的信任。組織應(yīng)該為虛擬團隊成員的互動和社交創(chuàng)造條件,比如,為個人提供必要的資源,使其在專業(yè)知識、時間和技能方面成為有效的貢獻者。保持虛擬團隊中的信任度應(yīng)該從可預測的溝通開始,虛擬團隊中不公平、不定期和不可預測的溝通會阻礙信任。另外,為了建立信任,虛擬團隊應(yīng)從以流程為中心過渡到以任務(wù)為中心,以使團隊成員專注于任務(wù),不被各種流程規(guī)章打擾,如查收電子郵件的頻率。

    采訪中,尤瑟夫·齊達內(nèi)列舉了建設(shè)項目延誤的十大常見原因:施工期間的設(shè)計變更;承包商付款延遲;計劃和日程安排不當;現(xiàn)場管理和監(jiān)督不力;設(shè)計不完整或不當;承包商經(jīng)驗不足/施工方法不妥;承包商的財務(wù)困難;發(fā)起人/業(yè)主/客戶的財務(wù)困難;資源(人力、機械、設(shè)備)短缺;勞動生產(chǎn)率低下和技能短缺。

    關(guān)于項目成功,尤瑟夫·齊達內(nèi)告訴記者:“只有從一開始就定義了成功標準,項目才能成功。我認為成功的衡量標準包括效率、有效性、相關(guān)性、影響和可持續(xù)性。效率是衡量投入和產(chǎn)出之間的比率的,涉及以正確的方式做事的問題。我們根據(jù)“鐵三角”來衡量效率。有效性衡量管理層實現(xiàn)其目標的程度,即做正確的事情。有效性可根據(jù)項目的收益和相關(guān)方的滿意度進行衡量。相關(guān)性是對項目是否符合業(yè)主、預期用戶和其他相關(guān)方的需求和優(yōu)先事項的總體評估。影響是指項目在短期和長期內(nèi)的所有積極和/或消極影響??沙掷m(xù)性是指項目的效益是否持續(xù)存在。”

    尤瑟夫·齊達內(nèi)指出,內(nèi)部和外部相關(guān)方的早期參與非常重要,然而大多數(shù)項目管理團隊都是在執(zhí)行階段才參與進來的。因此,項目發(fā)起人應(yīng)承擔識別和管理相關(guān)方期望的職責。并發(fā)哲學(Concurrent Philosophy)有助于真正的生命周期分析,它將相關(guān)方聚集在一起,從項目一開始就關(guān)注項目的各個角度,并使所有參與者能夠共享知識和信息,從而降低下游風險。

    關(guān)于近期頻繁出現(xiàn)的“黑天鵝”事件,尤瑟夫·齊達內(nèi)說道:“一個事件是不是‘黑天鵝’在很大程度上取決于觀察者。一件事情對火雞來說可能是‘黑天鵝’事件,但對屠夫來說也許并不是,因此,我們應(yīng)該通過探索和確定脆弱區(qū)域以避免‘黑天鵝’事件。在項目中,幾乎所有的失敗,即使是災(zāi)難性的失敗,都不是真正的‘黑天鵝’事件,而是一系列失敗疊加在一起造成的,然而,項目團隊卻常常忽視早期預警信號?!?/p>

    尤瑟夫·齊達內(nèi)的博士論文研究了時間和項目績效之間的關(guān)系。他呼吁我們在項目管理中更好地理解“時間”(Time)和“時機” (Timing)這兩個概念。他認為,“時間”與項目的效率相關(guān),而“時機”與項目結(jié)果的有效性相關(guān)。

    Interview

    Part ⅠAbout Trust

    Q1. Based on your observation, what is the common impact of trust on project performance?

    Youcef J-T. Zidane: Since it is believed that trust has a positive effect on project performance, it is relevant to try to assess its overall effect. A high level of trust between clients and project design teams reduces transaction costs and maximizes creativity and problem solving. Trust-based relationships will not easily weaken because of differences of opinion. Trust enables partners to overcome difficulties and facilitates mutual understanding. Therefore, trust can help to strengthen and improve the relationships among project partners, and as a result, bring a variety of benefits for the project as a whole.

    The project stakeholders and leaders value trust as being vital to project performance and success. Trust in the project teams’ability to complete their tasks increases the level of involvement in the project. The trust at different levels affects the project positively. For example, in innovative or problem-solving projects, a high level of trust between clients and the project group reduces the transaction costs in the early phase of the project. The long-term relationship with clients contributes to establishing level of trust; long-term working with companies and different stakeholders establishes a level of trust and reduces transactional cost in the project. In the early phase of a project, project members from different departments need to know each other first. When project members do not know each other, it takes longer to build trust.

    Trust can affect the project through knowledge sharing. Without trust, project members do not share their knowledge and their experiences, which hinders the progress of the project. However, based on the literature, trust can be enhanced through a reward system that influences people’s perception of each other’s motivation and the value of joint performance.

    Q2. What are your tips on building trust in virtual teams?

    Youcef J-T. Zidane: The big challenge in virtual teams is to create, build and maintain trust among its members. Trust may exist in the initial phase of the virtual team, in the form of swift trust. This type of trust is so fragile and may dissipate, so the team leader should figure out how to nurture that small signal and amplify it until they get the highest level of trust, which is like a spark that gives life to a fire.

    At the early stage of the virtual team, because of the pressure, they may show some swift trust among the members. That trust may be developed and nurtured until they have settled trust between them, or it may be shattered, because of many reasons. In virtual teams, even if personal trust relationships are established, in the absence of colocation, the team members might find it difficult to maintain them. Virtual team working often leads to unpredictability of the team members’ routine practices, resulting in isolation and anxiety. They may be seen as ‘forced’ to live with trust in impersonal principles and anonymous experts during their work practices. They don’t have the chance to maintain trust relationships through face-to-face interactions and socialization, to sustain reciprocal support and commitment for continuous team working.

    Trust relationships, which are based on both abstract systems and other participants, are sustained by their continuing reproduction. There is a need for organizational policies to create conditions for socialization and offer opportunities for active interactions. Such conditions can be achieved, for example, by providing individuals with the necessary resources to become effective contributors in terms of expertise, time and skills, also by providing opportunities to become effective contributors in terms of autonomy and authority.

    Trust can only be built, through a sequential process that blends together elements of ‘encapsulated self-interest’, and the development of mechanisms for self-governance and monitoring by the actors themselves. Hence, trust building does involve different aspects, and depends on ongoing direct interaction.

    Maintaining trust in virtual teams should start by predictable communication. Inequitable, irregular and unpredictable communication within virtual teams can hinder trust. The unpredictable communication even leads to low trust among virtual team members.

    Another important issue in the building of trust is transition from procedure-focus to task-focus. Teams, which end with low trust, have exchanged many messages on rules or procedures. The emphasis on procedures, such as how often to check emails, may help to provide an illusion of certainty only. Those teams are unable to move beyond setting rules. By contrast, all teams ending with high trust have demonstrated an ability to move from a procedural orientation to a task orientation. Once they begin to focus on the task, they will not be disturbed by negative comments or by missing team members.

    Q3. What kind of leadership and organizational culture are necessary to facilitate trust building in virtual teams?

    Youcef J-T. Zidane: One of thing that may affect the building of trust in the team is the leadership style. A problem that is common for teams ending with low trust is ineffective and/or negative leadership. The appointed leaders engage in negative rather than positive reinforcement, such as complaining about other members, lack of participation, complaining about too little communication, comparing the team unfavorably with other teams, or sending messages of complaint to the project coordinator. They describe the work as “extremely frustrating” and as a “frustrating experience”. These actions are viewed as betrayals by the other team members and contribute little to reinforcing commitment among the team. By contrast, the leadership role of the high trust teams emerged after an individual had produced something or exhibited skills, ability, or interest critical for the role of leadership; this can be done by developing key performance indicators, which allow the choice of the correct leader. Moreover, the leadership role should not be static but rather be rotated among members, depending on the task to be accomplished. Those taking leadership roles should maintain a positive tone.

    Another thing that may affect the building of trust in the team is the organizational culture, and the value promoted and practiced within the organization, such as phlegmatic reaction to crisis. Virtual teams with high level of trust are marked by an ability to remain phlegmatic during crises.

    Benevolence takes time to affect trust. The ability to affect trust seems to change over time and the effect decreases as the relationship is established among the team members.

    The most interesting thing about building trust in virtual teams is that the teams with high trust exhibit swift trust in the early stage that is developed into high trust later on.

    Part ⅡAbout Project Success and Failure

    Q4. What are the top 10 universal factors for delay in construction projects?

    Youcef J-T. Zidane: In an article published on International Journal of Managing Projects in Business, Zidane and Andersen (2018), identified universal delays factors, by appraising 104 existing studies published over the past 30 years, covering 46 countries to reveal that completion delay is an inherent risk in most construction projects, and that the root causes need to be recognized before effective preventive actions can be devised. They identified the top 10 universal delay factors: (1) design changes during construction/change orders; (2) delays in payment of contractor(s); (3) poor planning and scheduling; (4) poor site management and supervision;(5) incomplete or improper design; (6) inadequate contractor experience/building methods and approaches;(7) contractor’s financial difficulties; (8) sponsor/owner/ client’s financial difficulties; (9) resources shortage(human resources, machinery, equipment); and (10) poor labor productivity and shortage of skills.

    Q5. How do you define and measure project success?

    Youcef J-T. Zidane: Success is a perception; project success has been historically defined as a project that meets its objectives under budget and under schedule, known by the iron triangle, i.e. cost, time, scope. This evaluation criterion has remained as the most common measure in many businesses. However, for a modern, innovative and development project, success goes beyond meeting schedule and budget goals, which are the measure of efficiency. Success should include delivering the benefits and meeting expectations of the concerned stakeholders, which is the measure of the project effectiveness. Nevertheless, defining these dimensions of success (effectiveness, impacts and sustainability of the project) is difficult and most can only be evaluated years after the project has been completed.

    A project can only be successful if the success criteria are defined from the start. When we initiate a project, it is essential to define success through the success measures. I think the success measures include efficiency, effectiveness, relevance, impact and sustainability.

    Efficiency is a measure of the ratio between the input and the output. Efficiency is regarded as a question of doing things properly and producing project outputs in terms of the agreed scope, budget, schedule, and quality. An important point should be clarified: Quality is not a constraint per se, but often a by-product of the other three factors (scope, schedule, and budget), and quality generally suffers when the others are not properly managed.

    Effectiveness is a measure of the extent to which management attains its objectives, i.e. doing the right things. The project deliverables are measured in terms of concerned stakeholder satisfaction.

    Relevance is an overall assessment of whether a project is in harmony with the needs and priorities of the owners, the intended users and other attested parties. A change in policies or priorities could imply that a project is assigned lower priority, or that it loses some of its rationale. It becomes less relevant. Relevance deals with the needed time to make the right decision to start the implementation of the project (i.e., GO). If the decision is “GO” and the project becomes less relevant because of a change of policies or priorities, the assessment of relevance will instead be handled further by effectiveness, impacts, and sustainability.

    Impacts are all unexpected positive and/or negative changes and effects of the project, both in the short term and the long term. “Impact” as success/failure measure is divided into the following levels: during-the-project impact, the short-term and mid-term impact, and the long-term impact.

    Sustainability concerns measuring whether the benefits of an activity are likely to continue after donor funding has been completed and/or withdrawn. Projects need to be environmentally sustainable as well as financially sustainable.

    Part Ⅲ About Engagement

    Q6. You’ve written an article titled “When Stakeholders Shape Successes or Bring Failures”, which emphasizes the importance of stakeholder engagement, right? Would you please offer some suggestions on stakeholder engagement?

    Youcef J-T. Zidane: The early involvement of stakeholders, both internal and external, is of high importance. The big challenge for the project management team is to identify those stakeholders who can affect the project, and then manage their divergent demands through good communication in the early stages of a project. Unfortunately, most of the project management teams are allocated at the execution phase. Therefore, the project initiators should handle the role of identifying and managing stakeholders’expectations. A combination of the power/interest matrix and holistic evaluation model (e.g. PESTOL) can enhance management of the stakeholders. Furthermore, there is a question of resources versus effort: even though focusing more on external stakeholders will contribute to dealing effectively with the varying interests of the stakeholders, this effort will also require resources. Hence, there is a need to ensure a proper balance between allocation of resources and the degree (or scope) of the effort required to manage each stakeholder group.

    The concurrent philosophy is conducive to true lifecycle analysis. It brings together multiple individuals to address all angles of a project from the project inception and enables the accumulation of average shared knowledge and information among all the participants, so as to reduce downstream risks. To reach high level of concurrency within the whole project lifecycle, the client / owner / sponsor has to take the initiative to implement concurrent philosophy in managing their projects, and thus automatically all the following organizations (contractors, suppliers, consultants, subcontractors, etc.) had better adopt it in a systematic manner. The early involvement of all participant firms in the early project phases will lead to high level of integration and is a proper way to share information and knowledge. Late involvement of stakeholders leads to less accumulated average information and knowledge sharing among the participants. The average accumulated shared required knowledge and information decreases each time new firms(contractors, subcontractors, etc.) are involved.

    Q7. “Project Manager Perception: It is all about putting yourself in their shoes!” Would you please elaborate on it?

    Youcef J-T. Zidane: When dealing with social complexity in a project, you will need more skills than the traditional aspects of project management require such as technical, intellectual quotient (IQ) and managerial quotient (MQ) competences. Project managers will also need other proficiencies, which are related to values sharing and promoting; the behavior aspects such as soft skills, wisdom and improving their emotional quotient (EQ) competences. When I am asked by project managers how to improve their emotional competencies and deal with the social complexity in a short time, I always answer them first by saying, “It is all about putting yourself in their shoes, the shoes of the project stakeholders.”

    Part Ⅳ About the "Black Swans"

    Q8. Faced with the unknowns such as the “Black Swans”, in which direction should project management develop?

    Youcef J-T. Zidane: According to the Oxford Dictionary, crisis management is the process by which a business or an organization deals with a sudden emergency. A “Black Swan” is produced when the gap between what we know and what we think we know becomes dangerously wide. This concept is closely related to uncertainty and learning. A “Black Swan” event is usually a surprise, at least to the observer. However, the “Black Swan” event heavily depends on the observer. What may be a “Black Swan” surprise for a turkey is not a “Black Swan” surprise to its butcher, so the main objective is to “avoid being the turkey” by exploring and identifying areas of vulnerability in order to avoid surprises. In projects, while some may disagree, almost all failures, even catastrophic ones, are not really “Black Swan” events but a series of failures that alone may have a negative impact on project outcomes but lead to catastrophic failure if combined. However, it is surprising how often experienced project teams ignore the early warning signs and move forward into the project lifecycle despite serious problems in many areas that are key to project success. This will ultimately lead to the “Black Swan” event materializing. That is when it is too late to take any preventive actions.

    In recent years, in many organizations, the sheer volume of orders and projects needing to be handled concurrently has driven the growing need for project management. Many companies have established PMOs to handle the coordination. This will help organizations to survive during the crisis and the unstable environment around them.

    For the governmental organizations, they should have crisis plans, and these plans can be developed by involving project managers and their expertise such as risk management, knowledge management, early warning assigns, etc. Plans of crisis such as epidemic, extreme weather, etc. should be prepared in advance and updated regularly. Those who are proactive and ready for all types of crises by planning for all possible scenarios in advance are sure to cross the danger before those reactive people who deal with crisis by improvising.

    Part Ⅴ About the Concept of Time in Managing Projects

    Q9. Your PhD dissertation is about the relationship between time and project performance. To be brief, what is the conclusion of the paper? For project management practice, what does the research imply?

    Youcef J-T. Zidane: The PhD paper title is “Need for Speed”(Insights into the Concept of Time in Managing LargeScale Projects: Focus on the Concept of “Time” in its Two Dimensions – i.e., Quantitative Time as Chronos, and Qualitative Time as Kairos). In addition, the PhD dissertation is based on five research questions:

    RQ1: What is the current state of affairs and performance vis-à-vis the elapsed time, the time to delivery and other project aspects in a sample(s) of large-scale engineering projects?

    RQ2: What are the factors that cause delays in large-scale engineering projects?

    RQ3: What are the relationships between project speed and project flexibility, uncertainty and complexity?

    RQ4: Is faster project delivery always better? If so, why?

    RQ5: How can projects be delivered faster? It is very hard to summarize all the findings of the PhD in a few lines. However, to be very concise, the PhD thesis is all about time and project management. The need to reduce project duration is driving firms to continuously search for tools, techniques, methods and philosophies to achieve that. There are many scheduling tools, techniques and methods available, which have been practiced for decades. However, many researches and studies show that a significant number of projects exceed their desired delivery time. To some extent, it has been concluded that operational implementation of these tools, techniques and methods alone, in isolation, is not satisfactory for gaining the desired benefits; it should be well supported by complementary factors such as stakeholders’ commitment, improvement of organizational culture and management practices, competent personnel, continuous improvement processes, supportive management, etc. Time management is the act or process of planning and exercising conscious control over the amount of time spent on specific activities, especially with a view to increase effectiveness and efficiency. Time is one of the most critical constraints in projects. It is also one of the vital success criteria for every kind of project. Time management in projects involves processes required to accomplish timely completion of projects. Business economic value creating the potential to speed up projects manifests itself as a reduction in time-related costs and can lead to increased income due to reduced waste and less rework. One of the key aims of this PhD dissertation is to develop a better understanding of the concept of time(chronos) and timing (kairos) in managing projects.

    Q10. What is the difference between time and timing? How will time and timing influence project performance respectively?

    Youcef J-T. Zidane: When we take the two concepts separately, time is more about the efficiency of the project, the time interval needed for accomplishing the project. Then comes the timing, which is related to the effectiveness of the outcome of the project. For example, a new product technology developed by a company later than competitors will not be sold, or will be sold in low price. Time and timing are related, which is like the Yin and Yang, day and night. Time and timing will reflect the project performance measured in terms of efficiency and effectiveness. P

    猜你喜歡
    瑟夫齊達內(nèi)黑天鵝
    齊達內(nèi)的下一站在哪里
    新體育(2023年3期)2023-05-05 04:34:08
    優(yōu)雅的秘密
    優(yōu)雅的秘密
    故事會(2021年13期)2021-07-12 10:00:11
    黑天鵝格里布
    除了“黑天鵝”“灰犀?!眲e忽視了“大白象”
    水上消防(2020年2期)2020-07-24 09:27:02
    庫丘瑟夫:公益不只是捐錢
    莫愁(2019年8期)2019-11-14 03:30:04
    “灰犀?!薄昂谔禊Z”
    當代陜西(2019年7期)2019-04-25 00:22:20
    直視“黑天鵝”
    教練齊達內(nèi)
    海外星云(2016年2期)2016-04-28 03:42:14
    出版名家
    ——貝內(nèi)特·瑟夫
    俄罗斯特黄特色一大片| 日本 av在线| 精品卡一卡二卡四卡免费| 国产区一区二久久| 亚洲aⅴ乱码一区二区在线播放 | 一本综合久久免费| 97超级碰碰碰精品色视频在线观看| 一个人免费在线观看的高清视频| 国产精品免费视频内射| 50天的宝宝边吃奶边哭怎么回事| 日韩大码丰满熟妇| 欧美激情 高清一区二区三区| 不卡一级毛片| 无限看片的www在线观看| 久久草成人影院| 国产精品久久久久久人妻精品电影| 免费高清视频大片| 大型黄色视频在线免费观看| 国产亚洲精品综合一区在线观看 | 亚洲一码二码三码区别大吗| 欧美色欧美亚洲另类二区| 国产一卡二卡三卡精品| 草草在线视频免费看| 亚洲全国av大片| 国产精品1区2区在线观看.| 国产成人精品久久二区二区免费| 美女扒开内裤让男人捅视频| 1024手机看黄色片| 免费看美女性在线毛片视频| 天堂动漫精品| 久久婷婷人人爽人人干人人爱| 悠悠久久av| 在线十欧美十亚洲十日本专区| 啦啦啦韩国在线观看视频| 精品国产乱子伦一区二区三区| 丰满人妻熟妇乱又伦精品不卡| 午夜成年电影在线免费观看| 成年女人毛片免费观看观看9| 欧美黄色淫秽网站| 免费在线观看成人毛片| 黄色片一级片一级黄色片| 女警被强在线播放| 久99久视频精品免费| 好男人在线观看高清免费视频 | 成人国产综合亚洲| 亚洲一区中文字幕在线| 又黄又爽又免费观看的视频| 久久精品国产综合久久久| 一级毛片精品| 啦啦啦观看免费观看视频高清| 最新美女视频免费是黄的| 99久久综合精品五月天人人| 欧美一级毛片孕妇| 成年女人毛片免费观看观看9| 久久草成人影院| 久久久久国产一级毛片高清牌| 欧美日韩亚洲国产一区二区在线观看| 亚洲成国产人片在线观看| 亚洲免费av在线视频| e午夜精品久久久久久久| 一进一出抽搐动态| 两人在一起打扑克的视频| 很黄的视频免费| 一进一出抽搐动态| 亚洲一区高清亚洲精品| e午夜精品久久久久久久| 国产久久久一区二区三区| 操出白浆在线播放| 黄片大片在线免费观看| 99riav亚洲国产免费| 十八禁人妻一区二区| 一边摸一边抽搐一进一小说| 黄片大片在线免费观看| 国产精华一区二区三区| 午夜免费激情av| 日韩高清综合在线| 一区二区三区精品91| 午夜精品在线福利| 十八禁人妻一区二区| 亚洲精品久久国产高清桃花| 亚洲一码二码三码区别大吗| 亚洲aⅴ乱码一区二区在线播放 | 欧美黑人巨大hd| 一夜夜www| 亚洲一码二码三码区别大吗| 一夜夜www| 一个人观看的视频www高清免费观看 | 亚洲国产精品999在线| 亚洲美女黄片视频| 91字幕亚洲| 每晚都被弄得嗷嗷叫到高潮| 此物有八面人人有两片| 亚洲中文字幕日韩| 久久久久国产精品人妻aⅴ院| 亚洲成人久久爱视频| 十分钟在线观看高清视频www| 老司机福利观看| 在线av久久热| 国产视频内射| 成人国语在线视频| 欧美黄色淫秽网站| 女警被强在线播放| 日本一区二区免费在线视频| 可以在线观看的亚洲视频| 桃色一区二区三区在线观看| 亚洲欧美激情综合另类| 特大巨黑吊av在线直播 | 国产av在哪里看| 精品久久久久久,| 美女免费视频网站| 中文字幕人成人乱码亚洲影| 国内揄拍国产精品人妻在线 | 91成年电影在线观看| av有码第一页| 国产成年人精品一区二区| 亚洲熟妇熟女久久| 国产午夜精品久久久久久| videosex国产| videosex国产| 国内毛片毛片毛片毛片毛片| 成人午夜高清在线视频 | 91在线观看av| 又黄又粗又硬又大视频| 日本熟妇午夜| 久久国产精品影院| 国产精品1区2区在线观看.| 国产精品免费视频内射| 麻豆久久精品国产亚洲av| av天堂在线播放| 久久国产精品男人的天堂亚洲| 久久精品aⅴ一区二区三区四区| 欧美午夜高清在线| 黄色视频不卡| 国产黄色小视频在线观看| 免费搜索国产男女视频| 色精品久久人妻99蜜桃| tocl精华| 欧美丝袜亚洲另类 | 无限看片的www在线观看| 亚洲一区二区三区不卡视频| 亚洲自偷自拍图片 自拍| www日本在线高清视频| 精品福利观看| 精品国产亚洲在线| 好男人电影高清在线观看| 搡老岳熟女国产| 男女床上黄色一级片免费看| 一个人免费在线观看的高清视频| av视频在线观看入口| 一边摸一边抽搐一进一小说| 国产真实乱freesex| 99热6这里只有精品| 特大巨黑吊av在线直播 | 国产高清激情床上av| 久热这里只有精品99| 天堂√8在线中文| 亚洲性夜色夜夜综合| 午夜精品在线福利| 欧美中文日本在线观看视频| 免费在线观看成人毛片| 亚洲精品国产一区二区精华液| 亚洲欧美日韩高清在线视频| 中文资源天堂在线| 欧美日韩瑟瑟在线播放| 精品不卡国产一区二区三区| 12—13女人毛片做爰片一| 村上凉子中文字幕在线| avwww免费| 免费在线观看完整版高清| 国产精品日韩av在线免费观看| 免费人成视频x8x8入口观看| 久久精品91无色码中文字幕| 欧美人与性动交α欧美精品济南到| 老司机午夜十八禁免费视频| 日本三级黄在线观看| 国产激情欧美一区二区| 又黄又粗又硬又大视频| 日韩中文字幕欧美一区二区| 成人三级黄色视频| 国产成年人精品一区二区| 少妇裸体淫交视频免费看高清 | 国产91精品成人一区二区三区| 亚洲精品美女久久av网站| 51午夜福利影视在线观看| 99久久无色码亚洲精品果冻| 黄片大片在线免费观看| 亚洲一区高清亚洲精品| 久久人妻av系列| 淫秽高清视频在线观看| 亚洲精品美女久久av网站| 欧美日韩亚洲综合一区二区三区_| 1024视频免费在线观看| 国产极品粉嫩免费观看在线| 久久久久国产一级毛片高清牌| 伦理电影免费视频| 看黄色毛片网站| 精品福利观看| 国产精品久久久久久亚洲av鲁大| 婷婷六月久久综合丁香| 成人免费观看视频高清| 最近最新中文字幕大全免费视频| 午夜精品久久久久久毛片777| 国产v大片淫在线免费观看| 伦理电影免费视频| 久久久久免费精品人妻一区二区 | 亚洲国产毛片av蜜桃av| www.999成人在线观看| 日韩视频一区二区在线观看| a在线观看视频网站| e午夜精品久久久久久久| 午夜免费鲁丝| 岛国在线观看网站| 波多野结衣高清无吗| 1024香蕉在线观看| 国产色视频综合| 成人一区二区视频在线观看| 亚洲av成人不卡在线观看播放网| 天天添夜夜摸| e午夜精品久久久久久久| 超碰成人久久| 成人三级黄色视频| 老鸭窝网址在线观看| 男女那种视频在线观看| 亚洲五月色婷婷综合| 99热只有精品国产| 午夜亚洲福利在线播放| 亚洲成av人片免费观看| 亚洲欧美精品综合久久99| 国产1区2区3区精品| 手机成人av网站| 欧美又色又爽又黄视频| 日韩欧美一区二区三区在线观看| 国内毛片毛片毛片毛片毛片| 男人操女人黄网站| 精品午夜福利视频在线观看一区| 亚洲国产欧美网| 欧美日韩瑟瑟在线播放| 久久人人精品亚洲av| 日日干狠狠操夜夜爽| av片东京热男人的天堂| 国产成人av激情在线播放| 久热爱精品视频在线9| 国产精品久久久av美女十八| 黄色视频,在线免费观看| 18禁黄网站禁片午夜丰满| 日韩欧美国产在线观看| 麻豆成人av在线观看| 亚洲精品美女久久av网站| 亚洲人成伊人成综合网2020| 老司机深夜福利视频在线观看| avwww免费| 中亚洲国语对白在线视频| 高清在线国产一区| 成人国产综合亚洲| 亚洲第一青青草原| 夜夜爽天天搞| 免费在线观看亚洲国产| 我的亚洲天堂| 亚洲av五月六月丁香网| 美女大奶头视频| 香蕉丝袜av| 国产精品亚洲av一区麻豆| 啦啦啦观看免费观看视频高清| 日本成人三级电影网站| 国产精品香港三级国产av潘金莲| 制服丝袜大香蕉在线| 一级作爱视频免费观看| 国产又黄又爽又无遮挡在线| 欧美日韩精品网址| 中文字幕人成人乱码亚洲影| 日本免费a在线| 精品无人区乱码1区二区| 50天的宝宝边吃奶边哭怎么回事| 亚洲欧美精品综合一区二区三区| 国产在线观看jvid| 久久精品国产亚洲av高清一级| 99久久精品国产亚洲精品| 一级毛片精品| 久久香蕉精品热| 午夜福利欧美成人| 亚洲av第一区精品v没综合| 欧美黄色淫秽网站| 好看av亚洲va欧美ⅴa在| 人人妻,人人澡人人爽秒播| 亚洲中文av在线| 亚洲一卡2卡3卡4卡5卡精品中文| 男女那种视频在线观看| 精品国产超薄肉色丝袜足j| 国产av在哪里看| 日韩免费av在线播放| 午夜福利在线在线| av电影中文网址| 亚洲人成网站高清观看| 国产又黄又爽又无遮挡在线| 校园春色视频在线观看| 亚洲在线自拍视频| 亚洲午夜精品一区,二区,三区| av天堂在线播放| 久久中文字幕人妻熟女| 在线看三级毛片| 欧美乱色亚洲激情| 亚洲第一av免费看| 欧美在线一区亚洲| 久久久久国产一级毛片高清牌| 黄色成人免费大全| 一二三四社区在线视频社区8| 亚洲成国产人片在线观看| 天天一区二区日本电影三级| 国产不卡一卡二| 精品久久久久久久末码| 欧美大码av| 精品少妇一区二区三区视频日本电影| 91九色精品人成在线观看| 97碰自拍视频| 国产精品自产拍在线观看55亚洲| 午夜激情福利司机影院| av电影中文网址| 国产不卡一卡二| 一边摸一边抽搐一进一小说| 最新美女视频免费是黄的| 99久久久亚洲精品蜜臀av| av有码第一页| 97超级碰碰碰精品色视频在线观看| 搞女人的毛片| 一区福利在线观看| 中亚洲国语对白在线视频| 正在播放国产对白刺激| 一边摸一边做爽爽视频免费| 免费电影在线观看免费观看| 精品久久久久久久末码| 午夜两性在线视频| 久久热在线av| 丝袜在线中文字幕| or卡值多少钱| 一卡2卡三卡四卡精品乱码亚洲| 白带黄色成豆腐渣| 亚洲第一青青草原| 午夜精品久久久久久毛片777| 午夜日韩欧美国产| 亚洲成人精品中文字幕电影| 亚洲国产精品成人综合色| 日韩欧美在线二视频| 999久久久精品免费观看国产| 国产精品二区激情视频| 国产极品粉嫩免费观看在线| 欧美国产精品va在线观看不卡| 精品国产美女av久久久久小说| 久久午夜亚洲精品久久| 亚洲精品av麻豆狂野| 人人妻,人人澡人人爽秒播| 欧美性猛交黑人性爽| 老司机午夜福利在线观看视频| 亚洲精品一卡2卡三卡4卡5卡| 18禁国产床啪视频网站| 午夜精品久久久久久毛片777| 香蕉久久夜色| 久热这里只有精品99| tocl精华| 亚洲午夜理论影院| www日本黄色视频网| 色精品久久人妻99蜜桃| 一级毛片女人18水好多| 精品人妻1区二区| 欧美在线一区亚洲| 久久久久精品国产欧美久久久| 色哟哟哟哟哟哟| 成在线人永久免费视频| www.精华液| 黄色 视频免费看| 精品久久久久久久毛片微露脸| 国产v大片淫在线免费观看| 在线观看免费视频日本深夜| 久久久久久国产a免费观看| 18禁黄网站禁片午夜丰满| 人人澡人人妻人| 99久久久亚洲精品蜜臀av| 亚洲久久久国产精品| 18美女黄网站色大片免费观看| 国内精品久久久久精免费| 久久久久亚洲av毛片大全| 国产成人精品无人区| 亚洲在线自拍视频| 国产野战对白在线观看| 欧美成人一区二区免费高清观看 | 国产精品免费一区二区三区在线| 日韩有码中文字幕| 国产亚洲精品一区二区www| 丁香欧美五月| 欧美成狂野欧美在线观看| 成人永久免费在线观看视频| 久久婷婷人人爽人人干人人爱| 好男人在线观看高清免费视频 | 欧美日韩中文字幕国产精品一区二区三区| 最新在线观看一区二区三区| 久热爱精品视频在线9| 国产一区二区在线av高清观看| 免费看日本二区| 欧美日韩黄片免| 男女之事视频高清在线观看| xxx96com| 嫩草影视91久久| 狠狠狠狠99中文字幕| 我的亚洲天堂| 国产三级在线视频| 日韩大码丰满熟妇| 国产精品野战在线观看| 婷婷精品国产亚洲av在线| av超薄肉色丝袜交足视频| 一级毛片女人18水好多| 亚洲国产毛片av蜜桃av| 午夜免费激情av| 免费一级毛片在线播放高清视频| 丁香欧美五月| 青草久久国产| 搞女人的毛片| 99热只有精品国产| 老司机午夜福利在线观看视频| 色哟哟哟哟哟哟| 亚洲七黄色美女视频| 国产1区2区3区精品| 草草在线视频免费看| 非洲黑人性xxxx精品又粗又长| 精品少妇一区二区三区视频日本电影| 欧美激情极品国产一区二区三区| 91麻豆av在线| 亚洲 欧美 日韩 在线 免费| 99国产综合亚洲精品| 国产高清videossex| 亚洲av成人不卡在线观看播放网| 亚洲aⅴ乱码一区二区在线播放 | 美女扒开内裤让男人捅视频| 变态另类成人亚洲欧美熟女| 欧美日韩中文字幕国产精品一区二区三区| 人妻久久中文字幕网| 一区二区三区激情视频| 国内毛片毛片毛片毛片毛片| 观看免费一级毛片| 最好的美女福利视频网| 十八禁人妻一区二区| 精品国产国语对白av| 国产免费av片在线观看野外av| 一进一出抽搐动态| 亚洲中文字幕日韩| 制服丝袜大香蕉在线| 高潮久久久久久久久久久不卡| 久久国产精品男人的天堂亚洲| av福利片在线| 757午夜福利合集在线观看| 久热爱精品视频在线9| 日韩 欧美 亚洲 中文字幕| 麻豆国产av国片精品| 欧美精品亚洲一区二区| or卡值多少钱| 精品第一国产精品| 丁香欧美五月| 在线观看免费午夜福利视频| 婷婷精品国产亚洲av| 国产精品av久久久久免费| 黑人欧美特级aaaaaa片| 国产精品久久久av美女十八| 别揉我奶头~嗯~啊~动态视频| 国产精品一区二区精品视频观看| 黑丝袜美女国产一区| 精品久久久久久久久久免费视频| 欧美av亚洲av综合av国产av| 欧美日韩一级在线毛片| 白带黄色成豆腐渣| 亚洲无线在线观看| 国内精品久久久久精免费| 草草在线视频免费看| 首页视频小说图片口味搜索| 国产精品综合久久久久久久免费| 又大又爽又粗| 超碰成人久久| 久久久国产精品麻豆| 国产精品一区二区免费欧美| 午夜a级毛片| 国产亚洲欧美98| 久久婷婷成人综合色麻豆| 亚洲精品久久国产高清桃花| 女性被躁到高潮视频| 免费高清在线观看日韩| 亚洲欧美日韩高清在线视频| 两个人免费观看高清视频| www国产在线视频色| 自线自在国产av| 给我免费播放毛片高清在线观看| 手机成人av网站| 国产伦人伦偷精品视频| 色播在线永久视频| 一二三四社区在线视频社区8| 成人18禁在线播放| 99re在线观看精品视频| 日本撒尿小便嘘嘘汇集6| 日韩欧美 国产精品| 后天国语完整版免费观看| 精品福利观看| 欧美zozozo另类| 日韩国内少妇激情av| 国产精品精品国产色婷婷| 麻豆一二三区av精品| АⅤ资源中文在线天堂| 九色国产91popny在线| 国产av一区二区精品久久| 免费看日本二区| 国产野战对白在线观看| 三级毛片av免费| 天天躁夜夜躁狠狠躁躁| 国产欧美日韩一区二区精品| 午夜两性在线视频| 久久亚洲真实| 欧美日韩瑟瑟在线播放| 国产黄色小视频在线观看| 女人爽到高潮嗷嗷叫在线视频| 国产一区二区三区在线臀色熟女| 99精品在免费线老司机午夜| 国产成年人精品一区二区| 国产片内射在线| 久热这里只有精品99| 日本三级黄在线观看| 99re在线观看精品视频| 久久草成人影院| 巨乳人妻的诱惑在线观看| 成年女人毛片免费观看观看9| 国产野战对白在线观看| aaaaa片日本免费| 999久久久国产精品视频| 麻豆国产av国片精品| 色哟哟哟哟哟哟| tocl精华| 亚洲中文字幕一区二区三区有码在线看 | 国内精品久久久久久久电影| 一进一出抽搐gif免费好疼| 国产欧美日韩一区二区精品| 熟女电影av网| 1024视频免费在线观看| 国产精品99久久99久久久不卡| 亚洲av熟女| 色老头精品视频在线观看| 免费女性裸体啪啪无遮挡网站| 老司机深夜福利视频在线观看| 国产黄色小视频在线观看| 欧美绝顶高潮抽搐喷水| 久久精品国产亚洲av高清一级| 99国产精品一区二区三区| 亚洲九九香蕉| 国产熟女xx| 俄罗斯特黄特色一大片| 国产熟女xx| 少妇裸体淫交视频免费看高清 | 色综合欧美亚洲国产小说| 欧美在线黄色| 成人亚洲精品av一区二区| avwww免费| 日本在线视频免费播放| 他把我摸到了高潮在线观看| 中文字幕最新亚洲高清| 久久精品国产清高在天天线| 久久午夜综合久久蜜桃| 久久久久久久久久黄片| 91老司机精品| 在线天堂中文资源库| 精品久久久久久久人妻蜜臀av| 久久久久久大精品| 9191精品国产免费久久| 俄罗斯特黄特色一大片| 亚洲va日本ⅴa欧美va伊人久久| 亚洲一码二码三码区别大吗| 又黄又爽又免费观看的视频| 欧美黑人巨大hd| 亚洲五月色婷婷综合| 91国产中文字幕| 少妇粗大呻吟视频| 精品无人区乱码1区二区| 国产一级毛片七仙女欲春2 | 手机成人av网站| 母亲3免费完整高清在线观看| 午夜激情av网站| 99riav亚洲国产免费| 亚洲电影在线观看av| 久久性视频一级片| 12—13女人毛片做爰片一| 女警被强在线播放| 午夜福利在线在线| 夜夜夜夜夜久久久久| 欧美av亚洲av综合av国产av| 亚洲av电影不卡..在线观看| 草草在线视频免费看| 国产aⅴ精品一区二区三区波| 国产成年人精品一区二区| 精品国内亚洲2022精品成人| 国产精品九九99| 韩国av一区二区三区四区| 欧美性猛交╳xxx乱大交人| 在线国产一区二区在线| 极品教师在线免费播放| 韩国av一区二区三区四区| 日本免费a在线| 美女国产高潮福利片在线看| 欧美成人一区二区免费高清观看 | 最近在线观看免费完整版| 久久久久久人人人人人| 免费在线观看亚洲国产| 亚洲国产精品999在线| 久久伊人香网站| 1024香蕉在线观看| 国产99久久九九免费精品| 欧美日韩中文字幕国产精品一区二区三区| 亚洲av成人一区二区三| 日本a在线网址| 欧美精品亚洲一区二区| 国产精华一区二区三区| 国产精品综合久久久久久久免费| 免费在线观看成人毛片| 久久国产精品男人的天堂亚洲|