baber/WOPTO huggingface dataset:
Patent WO-2019119822-A1 (WO)
Inventor: PANG TE-LING
IPC: C12N15/867
Filed: 2018-08-09
Abstract: L'invention concerne une protéine de récepteur antigénique chimérique (CAR) artificielle comprenant un fragment de liaison à l'antigène CD19, un domaine transmembranaire et un domaine de signalisation. Le fragment de liaison à l'antigène CD19 est un fragment variable à chaîne unique (scFv) présentant des séquences d'acides aminés spécifiques. L'invention concerne également le vecteur d'expression du CAR artificiel et la composition pharmaceutique comprenant le CAR ou le vecteur d'expression.
Patent WO-2019218499-A1 (WO)
Title: Transmission apparatus and lifting column
Inventor: HU RENCHANG
IPC: F16B7/10
Filed: 2018-08-09
Abstract: The present invention relates to the field of transmission apparatus, and disclosed thereby is a transmission apparatus, comprising a hollow shaft, the hollow shaft being internally provided with a transmission screw rod, and the transmission screw rod and the hollow shaft continuing to synchronously rotate in the circumferential direction and slidingly cooperating in the axial direction; an external wall of the hollow shaft is provided with an external thread and threadingly cooperates with a first transmission nut, the hollow shaft being connected to a first sleeve by means of the first transmission nut; the transmission screw rod threadingly cooperates with a second transmission nut and is connected to a second sleeve by means of the second transmission nut, the second transmission nut and the hollow shaft remaining oppositely fixed in the axial direction and oppositely rotating in the circumferential direction; the transmission apparatus comprises a first braking torsion spring for braking the transmission screw rod and a second braking torsion spring for braking the hollow shaft. Moreover, further disclosed by the present invention is a lifting column. The present invention has the following advantages: the self-locking force of the transmission apparatus may be effectively improved, and transmission is more smooth.
Patent WO-2019047693-A1 (WO)
Title: Method and device for carrying out wifi network security monitoring
Inventor: CHENG HAN
IPC: H04W12/126
Filed: 2018-08-15
Abstract: The aim of the present application is to provide a method and device for carrying out WiFi network security monitoring, comprising: acquiring first network security monitoring information that is sent by a user equipment and that corresponds to a target WiFi network, wherein the first network security monitoring information is acquired when the user equipment is connected to the target WiFi network; determining network security state information of the target WiFi network on the basis of the first network security monitoring information; and providing the network security state information to an administrative user of the target WiFi network. Hence, the present application makes a break through in the normal operation in existing technology of network security detection being conducted by an intelligent router by means of security scanning, and even if the target WiFi is only a common router, real-time monitoring of network security may be achieved on the basis of the technical solution of the present application.
Patent WO-2020051766-A1 (WO)
Title: Immunogen for broad-spectrum influenza vaccine and application thereof
Inventor: XU JIANQING
IPC: A61K39/145
Filed: 2018-09-11
Abstract: The present invention provides a novel influenza immunogen, having a sequence comprising an amino acid sequence shown in SEQ ID No. 1 or SEQ ID No. 2, an immunogenic fragment thereof, or a combination thereof. Further, the present invention also provides a recombinant vector vaccine utilizing the immunogen and an application of an immunization method thereof in an influenza vaccine. The invent sequentially applies various vector vaccines expressing the novel influenza immunogen, and utilizes a combination of systemic immunity and local immunity, so as to locally induce a high level of T cell immune response in the respiratory tract, thereby providing broad-spectrum protection against various influenza virus infections.
Patent WO-2019119902-A1 (WO)
Inventor: WANG LEI
IPC: C23C18/12
Filed: 2018-09-14
Abstract: 一种废液回收系统（200）、化学浴沉积装置（300）及其沉积方法，废液回收系统（200）包括：废液储存槽（202），用于储存硫化镉沉积槽沉积产生的废液；制冷装置（203），用于对储存的所述废液制冷；过滤装置（204），用于过滤制冷得到的废液；化学液储存槽（205），用于储存过滤后的废液。废液回收系统（200）、化学浴沉积装置（300）及其沉积方法，通过对废液进行制冷、过滤，再补充化学品原料，从而得到与原液浓度相同的化学液，从而显著提高了废液的回收利用，降低了生产成本。
Patent WO-2019080667-A1 (WO)
Title: Method for constructing ataxia animal model and application thereof
Inventor: ZHU XIANJUN
IPC: C12N15/90
Filed: 2018-09-18
Abstract: Provided is a method for constructing an ataxia animal model, which comprises knocking out a target sequence on a genome of the cerebellar Purkinje cells of a target animal; the target sequence is the Tmem30a gene. Also provided are an animal model of the cerebellar ataxia constructed by the described method and a method for screening a medicament used for preventing or treating an ataxia disease using the animal model.
Patent WO-2019052578-A1 (WO)
Title: Interleaving method and interleaving apparatus
Inventor: CHEN YING
IPC: H03M13/27
Filed: 2018-09-18
Abstract: An interleaving method and an interleaving apparatus. The method comprises: acquiring a bit sequence to be interleaved (401); writing bits in a bit sequence to be interleaved into an interleaver (402); and reading, from the interleaver, the bits written into the interleaver (403), wherein any two bits having the same writing sequence in bit sequences to be interleaved of different lengths have the same read sequences. The method and apparatus provide an interleaving method of low complexity and good interleaving performance.
Patent WO-2019062630-A1 (WO)
Title: Forward collision avoidance method and system for vehicle
Inventor: SUN PENG
IPC: B60W30/09
Filed: 2018-09-20
Abstract: A forward collision avoidance method and system for a vehicle. The method comprises: determining a current speed of this vehicle and a current speed of a front obstacle (S101); determining a collision avoidance manner to be used by the vehicle, the collision avoidance manner comprising collision avoidance by single braking, collision avoidance by single steering or a combination of the collision avoidance by braking and the collision avoidance by steering (S102); computing, by means of a set computing formula, a collision avoidance distance corresponding to the determined collision avoidance manner according to the current speeds and the determined collision avoidance manner (S103); determining a current distance between this vehicle and the front obstacle (S104); and determining whether the current distance reaches the collision avoidance distance, and if the determining result is yes, determining that a collision avoidance condition is satisfied (S105). By comprehensively taking braking and steering collision avoidance into consideration, a collision avoidance frequency can be effectively reduced, and interference to drivers can be reduced, which more conforming to driving habits.
Patent WO-2019196369-A1 (WO)
Inventor: LIU XINYONG
IPC: A61K31/519
Filed: 2018-10-12
Abstract: 本发明涉及一种噻唑并嘧啶类HIV-1逆转录酶抑制剂及其制备方法和应用。所述化合物具有式I或II的所示的结构。本发明还涉及含有式I或II结构化合物的药物组合物。本发明还提供上述化合物以及含有一个或多个此类化合物的组合物在制备治疗和预防人免疫缺陷病毒(HIV)药物中的应用。
Patent WO-2019085729-A1 (WO)
Inventor: LIU ZHENG
IPC: H04L27/38
Filed: 2018-10-15
Abstract: 本申请公开了一种被用于无线通信的用户设备、基站中的方法和装置。用户设备首先接收接收第一信令，接着发送第一无线信号；所述第一信令被用于确定K个RE，K个第一类复数分别映射到K个RE上，所述K个第一类复数被用于生成所述第一无线信号，K个第一类参数和所述K个第一类复数一一对应，所述K个第一类参数和所述K个RE的频域位置有关，所述K个第一类参数中的每个第一类参数和对应的第一类复数所映射的RE的循环前缀的长度有关；所述第一无线信号携带第一比特块，所述K个第一类参数和所述第一比特块被用于生成所述K个第一类复数。本申请能提升上行的覆盖性能。
Patent WO-2020077664-A1 (WO)
Title: Chain oiling device
Inventor: XU ZHIQIANG
IPC: F16N11/08
Filed: 2018-10-25
Abstract: A chain oiling device, comprising an oil storage barrel (1). The oil storage barrel is of a hollow shell structure with the upper end closed and the lower end opened. The lower end of the oil storage barrel is connected to an oil drainage barrel (2). The oil drainage barrel is of a hollow barrel-shaped structure with the upper and lower ends opened. The longitudinal section of the oil drainage barrel is circular with upper and lower notches, and the central angle corresponding to the upper and lower notches of the oil drainage barrel is 50-60°. The upper end of the oil drainage cylinder is connected to the lower end of the oil storage cylinder. An oil drainage chain wheel (3) is movably connected into the oil drainage cylinder and provided with six evenly-distributed sprockets (7). The top of the sprocket is in contact with an arc-shaped wall of the inner side of the oil drainage cylinder, and two sides of the oil drainage chain wheel are flat surfaces and are attached to the two corresponding flat surfaces of the inner side of the oil drainage cylinder. An oil inlet (5) is formed in one side wall of the oil storage barrel, and a pressure balance hole (6) is formed in the top of the oil storage barrel. According to the chain oiling device, lubricating oil is not excessive in the oiling process, splashing of the lubricating oil is avoided, and pollution to the ground and the ambient environment is avoided.
Patent WO-2019200874-A1 (WO)
Inventor: CAI YUJIE
IPC: C12N1/21
Filed: 2018-10-25
Abstract: 提供了一种重组大肠杆菌及其在丹参素生产中的应用，所述重组大肠杆菌同时表达α-­­­羟基羧酸脱氢酶和L-­­α-­­氨基酸转氨酶，以及葡萄糖脱氢酶、L-­­乳酸脱氢酶和L­­-谷氨酸脱氢酶中的任意一种，并在宿主大肠杆菌的基础上敲除了酚类化合物分解相关的基因。
Patent WO-2019184356-A1 (WO)
Inventor: ZHANG GUOQIANG
IPC: A01K5/01
Filed: 2018-11-06
Abstract: A flying saucer-shaped pet bowl, comprising a central bowl portion and a support portion extending downward along the outside of a bowl opening of the central bowl portion, wherein the height of the support portion is greater than the height of the central bowl portion, such that the central bowl portion is suspended; the overall shape of the support portion is a hemisphere having a flattened upper portion, and the hemisphere is provided with a plurality of arc-shaped notches circumferentially spaced apart to form a plurality of bowl legs. The flying saucer-shaped pet bowl according to the present utility model has a novel and unique mould, and may not only prevent discomfort caused when the head of a pet lowers excessively when eating, but also may provide stable support. The bowl does not easily slide, and is convenient to pick up and place.
Patent WO-2020029460-A1 (WO)
Inventor: LIU YANG
IPC: H01L27/32
Filed: 2018-11-16
Abstract: 一种透明导电膜(100)、显示面板和显示装置，其中透明导电膜(100)包括透明导电层(120)、金属层(130)和介质层(140)，介质层（140）包括有机电子传输材料层和掺杂于有机电子传输材料层内的金属材料，透明导电层(120)、金属层(130)和介质层(140)堆叠形成多层结构。由于透明导电膜(100)包括具有柔性特性的金属层(130)和掺杂有金属材料的有机电子传输材料层，用作显示装置的电极时，提高了电极的柔性，进而提高了显示装置的柔性。
Patent WO-2019101020-A1 (WO)
Inventor: LI RUIHUA
IPC: H04L12/24
Filed: 2018-11-16
Abstract: 本申请提供了多终端协同工作的方法，终端设备以及多终端协同系统。该多终端协同工作的方法包括：主设备向多个从设备发送组网信息，组网信息用于在主设备和多个从设备之间组建协同网络，其中，主设备具有协同网络的管理权限；主设备接收多个从设备发送的组网确认信息，组网确认信息用于指示从设备已经接入协同网络；主设备向多个从设备分别发送配置信息，配置信息用于指示在主设备出现异常或者主设备退出协同网络时，按照预先设置的管理权限切换机制切换协同网络的管理权限；当多个从设备中的一个从设备发生异常时，主设备按照预先设置的清除规则将一个从设备从协同网络中清除。本申请能够提高协同网络的鲁棒性。
Patent WO-2020052089-A1 (WO)
Title: Interlock system for particle dose safety protection
Inventor: CAO HAILIN
IPC: A61N5/10
Filed: 2018-11-28
Abstract: An interlock system for particle dose safety protection, comprising a particle accelerator (1), an in-accelerator beam current cutting device (2), a therapeutic room front end beam current cutting device (3), a beam current dose detection device (4), several therapeutic rooms (5), a transmission system main line beam current cutting device (6), a first controller (7), and a second controller (8). The in-accelerator beam current cutting device (2) is disposed in the particle accelerator (1), and the transmission system main line beam current cutting device (6) is disposed on a beam current transmission main line. The system has the following beneficial effect: by means of detection by the beam current dose monitoring device (4) in the therapeutic room, once the dose delivered to the body of a patient is found to go beyond a safe range, interlock is triggered immediately, so as to control the beam current cutting devices (2, 3, 6) at the different positions in a particle therapy system to perform beam current cutting, in which case, the purpose of multi-point beam current cutting and redundant beam current cutting is achieved, safety and redundancy of the interlock system are ensured, and safety control is provided for particle radiotherapy.
Patent WO-2020052135-A1 (WO)
Inventor: LIAO HAILIN
IPC: G10L25/63
Filed: 2018-12-17
Abstract: 本公开公开了一种音乐推荐方法、装置、计算装置和存储介质，涉及人工智能技术领域音乐推荐的方法包括：获取用户的声音；根据所述用户的声音得到情绪关键词，其中，所述情绪关键词用于表示用户当前情绪；为该用户推荐与所述情绪关键词对应类型的音乐。
Patent WO-2020006992-A1 (WO)
Title: Liquid distributor, falling film evaporator, and air conditioner
Inventor: ZHANG ZHIPING
IPC: F25B39/02
Filed: 2018-12-19
Abstract: A liquid distributor (200), a falling film evaporator (10), and an air conditioner. The liquid distributor (200) comprises a liquid distributing slot (210) and a liquid stopping slot (220). Multiple liquid distributing through holes (211) are disposed at a bottom wall of the liquid distributing slot (210). A top space of the liquid distributing slot (210) communicates with a vent channel (500) of the falling film evaporator (10). The liquid stopping slot (220) is disposed above the bottom wall of the liquid distributing slot (210). The liquid stopping slot (220) comprises two opposing side walls. The two opposing side walls on the liquid stopping slot (220) are each provided with multiple overflow through holes (221). A top space of the liquid stopping slot (220) communicates with the vent channel (500) of the falling film evaporator (10). A refrigerant can be injected into the liquid stopping slot (220). A gas-liquid mixed refrigerant undergoes primary gas-liquid separation and secondary gas-liquid separation while entering the liquid stopping slot (220) and the liquid distributing slot (210), so as to effectively reduce the amount of gaseous refrigerant mixed in a liquid refrigerant flowing from the bottom wall of the liquid distributing slot (210), thereby ensuring that the liquid refrigerant forms an even and stable liquid film on the surface of a heat exchange tube (310), and improving heat exchange efficiency of the falling film evaporator (10).
Patent WO-2019137341-A1 (WO)
Inventor: LIU JIANHUA
IPC: H04W48/12
Filed: 2019-01-07
Abstract: 本申请实施例涉及用于确定终端设备状态的方法、终端设备和接入网设备。该方法包括：终端设备接收接入网设备发送的配置信息，所述配置信息用于指示终端设备进入非激活状态；所述终端设备确定在进入所述非激活状态的情况下是否进入省电模式，处于所述省电模式的所述终端设备的射频模块关闭。本申请实施例的用于确定终端设备状态的方法、终端设备和接入网设备，能够使得非激活状态的终端设备进入省电模式，进一步减少终端设备的耗电。
Patent WO-2019154186-A1 (WO)
Inventor: LI CHENXIN
IPC: H04W72/04
Filed: 2019-01-29
Abstract: 本公开实施例提供了一种资源配置方法、资源选择方法、信息接收方法及设备，其中所述资源配置方法包括：为用户设备配置调度信令SA的第一基带参数以及数据DATA的第二基带参数，其中，第一基带参数和第二基带参数分别包括时域资源粒度和频域资源子载波间隔，且第一基带参数的种类少于或等于第二基带参数的种类。
Patent WO-2020147161-A1 (WO)
Title: 一种交互显示装置及方法
Inventor: Li Dashuo
IPC: G09F19/18
Filed: 2019-02-15
Abstract: 本发明公开了一种交互显示装置及方法，装置包括显示屏、触控台、交互识别模块和主机，所述显示屏、触控台均与所述主机连接，所述触控台包括电磁电容双触摸显示屏，所述交互识别模块放置在所述触控台上以使得所述主机获取所述交互识别模块的位置和角度。本发明通过设置显示屏、触控台、交互识别模块和主机，触控台包括电磁电容双触摸显示屏，将交互识别模块放置在触控台上，通过获取交互识别模块的位置和角度控制显示屏显示场景画面，采用电磁电容双触摸显示屏克服了现有技术中电容屏与交互识别模块接触不良的问题，从而提供了一种更加稳定、用户体验更好的交互显示装置及方法，而且装置集成度高、易携带、成本低，具有良好的经济和社会效益。
Patent WO-2020172788-A1 (WO)
Inventor: CHEN YUAN
IPC: G06F9/44
Filed: 2019-02-26
Abstract: Selon la présente invention, un mode de réalisation d'un appareil de boîtier de semi-conducteur peut comprendre une technologie qui permet d'identifier des variables de commande de charge de travail, d'ajouter des drapeaux de charge de travail à des bords respectifs dans un graphe d'attribution unique et statique, et de propager des constantes sur la base des variables de commande de charge de travail identifiées et des drapeaux de charge de travail. D'autres modes de réalisation sont décrits et revendiqués.
Patent WO-2019218751-A1 (WO)
Title: Processing method, apparatus and device for risk prediction of insurance service
Inventor: WU LONGFENG
IPC: G06Q10/06
Filed: 2019-02-28
Abstract: A processing method, apparatus and device for risk prediction of an insurance service. A gradient boosting decision tree can be used in advance to construct a risk prediction model, the risk prediction model being able to be trained using risk-associated marked data associated with the insurance service. When the training of the risk prediction model satisfies a prediction requirement, the risk prediction model can be used as online risk prediction, performs insurance service risk prediction on a user to be predicted, and outputs a prediction result. Multidimensional nonlinear variables in the insurance service can be reasonably and effectively used, and the risk prediction model based on the nonlinear relationship of the gradient boosting decision tree can be well compatible with linear and nonlinear variables. Compared to the traditional linear model, the accuracy of the prediction result is significantly improved, the deficiency of the traditional linear model is effectively compensated for, and the service experience of the insurance service is improved.
Patent WO-2019214553-A1 (WO)
Title: Resource allocation method and apparatus
Inventor: ZHAO YALI
IPC: H04W72/04
Filed: 2019-05-05
Abstract: A resource allocation method and apparatus, used to resolve the issue in the prior art in which no specific solution exists for a resource allocation method based on MDBV data transmission in a 5G system. In the embodiment of the present invention, a terminal and a network side device determine a corresponding MDBV and a sliding window used for MDBV control and allocate resources according to the determined MDBV and the sliding window used for MDBV control. Data transmission resources are allocated according to a sliding window used for MDBV control, thereby ensuring that the amount of data sent by each QoS Flow does not exceed an MDBV limit, and eliminating, when a system is under heavy loading, a situation in which a delay-sensitive service preempts resources of other services.
Patent WO-2020223901-A1 (WO)
Inventor: ZHOU ZHENBAO
IPC: G06F9/54
Filed: 2019-05-07
Abstract: The present application provides a data query method, a server, a computer readable storage medium, and a computer program product. The method comprises: on the basis of a target database, among a plurality of databases, corresponding to a target query condition, providing a target query result corresponding to the target query condition, wherein the target query condition corresponds to at least one feature value of a block. The technical solution can improve blockchain information query speed, and can provide query results for more query conditions at the same time.
Patent WO-2020019849-A1 (WO)
Title: Air conditioner and outdoor unit defrosting control method thereof
Inventor: ZHOU MINGJIE
IPC: F24F11/89
Filed: 2019-05-24
Abstract: The invention relates to the technology field of an air conditioner and in particular relates to an air conditioner and an outdoor unit defrosting control method thereof. The present invention aims at solving the problem that the existing air conditioner cannot execute different defrosting methods according to different conditions, and the heating effect can be severly influenced by the frosting phenomenon of the outdoor unit. The outdoor unit defrosting control method according to the present invention comprises: When the air conditioner is in a heating operation, an air suction pressure of the air conditioner and a coiled pipe temperature of the outdoor unit can be obtained so that the frosting degree of the outdoor unit is estimated. According to the air suction pressure of the air conditioner and the coiled pipe temperature of the outdoor unit, the air conditioner selectively enters the corresponding outdoor unit defrosting mode such that the air conditioner can select the optimal defrosting mode according to the defrosting degree of the outdoor unit, furthermore, the following problem of the existing air conditioner is solved: the heating effect is severely influenced as the selected defrosting mode is not matched with the actual frosting condition.
Patent WO-2020057212-A1 (WO)
Title: 一种混凝土超高泵送仿真验证装置及方法
Inventor: GONG JIAN
IPC: G01N11/14
Filed: 2019-06-25
Abstract: 本发明提供了一种混凝土超高泵送仿真验证装置及方法，属于混凝土超高泵送技术领域，用于验证混凝土超高泵送仿真模型的精确性。它包括通过法兰盘对接连接于混凝土泵管末端的测试管道，还包括垂直安装于垂直管道内壁上的旋转叶轮系统，旋转叶轮系统包括配合设置的旋转叶片和旋转轴，旋转轴的另一端设置测量控制系统，通过测量控制系统来测定叶片旋转的转速，并根据设定的拟合公式计算出混凝土塑性粘度和屈服应力。因此，该装置无需在泵管上安装压力传感器等设备，不会破坏泵管的安全性，即可简单便捷地在混凝土泵送过程中测定混凝土的流变学参数。
Patent WO-2020020292-A1 (WO)
Inventor: LI JUNCHAO
IPC: H04W72/06
Filed: 2019-07-25
Abstract: 本申请提供了通信方法和通信装置，该通信方法包括：通信设备获取带宽部分的优先级信息，并根据带宽部分的优先级等级，在该带宽部分上接收或发送与该优先级相匹配的业务，从而提高通信效率。
Patent WO-2020020296-A1 (WO)
Title: Ue power profile adaptation
Inventor: HWANG CHIEN-HWA
IPC: H04W52/04
Filed: 2019-07-25
Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives, from a base station, a configuration specifying one or more power profiles of the UE. Each of the power profile includes a predetermined value of at least one operational parameter that, while adopted by the UE when the configuration is applied, affects a power consumption of the UE. The UE operates in accordance with a first power profile of the one or more power profiles. The UE determines that a trigger event has occurred. The UE switches to operate in accordance with a second power profile of the one or more power profiles.
Patent WO-2020155599-A1 (WO)
Inventor: MIN HONGBING
IPC: H01B7/295
Filed: 2019-08-07
Abstract: 一种补偿导线，包括线芯组件，线芯组件外还依次包裹有第一绕包层(4)、编织层(5)、第二绕包层(6)、屏蔽层(7)和阻燃防护层(9)，线芯组件与第一绕包层(4)间设有耐高温填充层(8)，线芯组件包括正极线芯(100)和负极线芯(200)，正极线芯(100)和负极线芯(200)均包括导体(1)和依次设置在导体外圈的保护层(2)、绝缘层(3)。采用上述结构后，镀锡细铜丝编织屏蔽层(7)提高电缆抗干扰和电磁辐射的同时，使得导线具有高感应灵敏度性能；导线外层采用矿物氧化镁填充层和本安型聚氯乙烯阻燃型防护层(9)，使得导线具有优异的耐高温和耐腐蚀性能，有效延长导线的使用寿命。
Patent WO-2020020383-A1 (WO)
Title: Multiple unit parallel auxiliary converter synchronous soft startup networking control strategy
Inventor: ZHANG BO
IPC: H02J3/40
Filed: 2019-08-26
Abstract: A multiple unit parallel auxiliary converter synchronous soft startup networking control strategy, wherein when a first auxiliary converter is put into a bus, non-first auxiliary converters synchronously complete networking and connecting during a first amplitude soft startup process. The specific solution is: rapid networking logic, bus rapid tracking logic and a PQ droop control strategy, wherein the rapid networking logic comprises first and non-first auxiliary converter identification, the bus rapid tracking logic comprises phase and frequency tracking and amplitude tracking, and the PQ droop control strategy comprises introducing a correction coefficient K. The multiple unit parallel auxiliary converter synchronous soft startup networking control strategy implements rapid, reliable and automatic networking of auxiliary converters under a multiple unit emergency traction mode, and significantly shortens networking time under a multiple unit networking normal mode. Therefore, the present invention ensures that a multiple unit can complete startup within a specified time under various operating conditions, and provides a strong guarantee for the stable and reliable operation of the multiple unit.