scholarly journals A Priori Approach Of Real-Time Ridesharing Problem With Intermediate Meeting Locations

2014 ◽  
Vol 4 (4) ◽  
pp. 287-299 ◽  
Author(s):  
Kamel Aissat ◽  
Ammar Oulamara

Abstract Ridesharing is a mobility concept in which a trip is shared by a vehicle’s driver and one or more passengers called riders. Ridesharing is considered as a more environmentally friendly alternative to single driver commutes in pollution-creating vehicles on overcrowded streets. In this paper, we present the core of a new strategy of the ridesharing system, making it more flexible and competitive than the recurring system. More precisely, we allow the driver and the rider to meet each other at an intermediate starting location and to separate at another intermediate ending location not necessarily their origins and destinations, respectively. This allows to reduce both the driver’s detour and the total travel cost. The term “A priori approach” means that the driver sets the sharing cost rate on the common path with rider in advance. An exact and heuristic approaches to identify meeting locations, while minimizing the total travel cost of both driver and rider are proposed. Finally, we analyze their empirical performance on a set of real road networks consisting of up to 3,5 million nodes and 8,7 million edges. Our experimental results show that our heuristics provide efficient performances within short CPU times and improves the recurring ridesharing approach in terms of cost-savings.

Author(s):  
William Demopoulos ◽  
Peter Clark

This article is organized around logicism's answers to the following questions: What is the basis for our knowledge of the infinity of the numbers? How is arithmetic applicable to reality? Why is reasoning by induction justified? Although there are, as is seen in this article, important differences, the common thread that runs through all three of the authors discussed in this article their opposition to the Kantian thesis that reflection on reasoning with mere concepts (i.e., without attention to intuitions formed a priori) can never succeed in providing satisfactory answers to these three questions. This description of the core of the view differs from more usual formulations which represent the opposition to Kant as an opposition to the contention that mathematics in general, and arithmetic in particular, are synthetic a priori rather than analytic.


Author(s):  
Rakshith . ◽  
Shivakumar . ◽  
Sreeharsha . ◽  
Divyasree .

The core principles in Ayurveda give prime importance to Agni, Prakriti, Ahara (food) and Vihara (lifestyle) in maintaining health. Present era people are scheduled to one or the other works due to which they are following unrightful food and habits which lead the manifestation of one of the common disorder which troubles person a lot - Amlapitta. By excess “Hurry, Worry and Curry” GIT disorders are the most common, not only affecting physical health but also psychological and social health. Amlapitta is one of that and it is a burning problem of the whole World. Amalpitta is composed of word Amla and Pitta. Amlapitta is a very common disease caused by Vidagdha Pitta with features like Amlodgara, Tiktodgara, Hrit, Kantha Daha etc. Pathya recommended in Amlapitta are Yava, Godhuma, Purana Shali, Mudga Yusha, Lajasaktu etc. Apathya recommended in Amlapitta are Navanna, Avidugdha, Masha, Kulattha, Dadhi and etc. So this present review article throws light on Pathya (conducive) and Apathya (non conducive) in Amlapitta.


BMC Cancer ◽  
2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Cheng KKF ◽  
S. A. Mitchell ◽  
N. Chan ◽  
E. Ang ◽  
W. Tam ◽  
...  

Abstract Background The aim of this study was to translate and linguistically validate the U.S. National Cancer Institute’s Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE™) into Simplified Chinese for use in Singapore. Methods All 124 items of the English source PRO-CTCAE item library were translated into Simplified Chinese using internationally established translation procedures. Two rounds of cognitive interviews were conducted with 96 cancer patients undergoing adjuvant treatment to determine if the translations adequately captured the PRO-CTCAE source concepts, and to evaluate comprehension, clarity and ease of judgement. Interview probes addressed the 78 PRO-CTCAE symptom terms (e.g. fatigue), as well as the attributes (e.g. severity), response choices, and phrasing of ‘at its worst’. Items that met the a priori threshold of ≥20% of participants with comprehension difficulties were considered for rephrasing and retesting. Items where < 20% of the sample experienced comprehension difficulties were also considered for rephrasing if better phrasing options were available. Results A majority of PRO-CTCAE-Simplified Chinese items were well comprehended by participants in Round 1. One item posed difficulties in ≥20% and was revised. Two items presented difficulties in < 20% but were revised as there were preferred alternative phrasings. Twenty-four items presented difficulties in < 10% of respondents. Of these, eleven items were revised to an alternative preferred phrasing, four items were revised to include synonyms. Revised items were tested in Round 2 and demonstrated satisfactory comprehension. Conclusions PRO-CTCAE-Simplified Chinese has been successfully developed and linguistically validated in a sample of cancer patients residing in Singapore.


Scanning ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Xu Chen ◽  
Tengfei Guo ◽  
Yubin Hou ◽  
Jing Zhang ◽  
Wenjie Meng ◽  
...  

A new scan-head structure for the scanning tunneling microscope (STM) is proposed, featuring high scan precision and rigidity. The core structure consists of a piezoelectric tube scanner of quadrant type (for XY scans) coaxially housed in a piezoelectric tube with single inner and outer electrodes (for Z scan). They are fixed at one end (called common end). A hollow tantalum shaft is coaxially housed in the XY-scan tube and they are mutually fixed at both ends. When the XY scanner scans, its free end will bring the shaft to scan and the tip which is coaxially inserted in the shaft at the common end will scan a smaller area if the tip protrudes short enough from the common end. The decoupled XY and Z scans are desired for less image distortion and the mechanically reduced scan range has the superiority of reducing the impact of the background electronic noise on the scanner and enhancing the tip positioning precision. High quality atomic resolution images are also shown.


2013 ◽  
Vol 8 (1) ◽  
pp. 42-54
Author(s):  
Camille Carbonnaux

Since the 1990s, European judicial and normative institutions have paid particular attention to the competitive practices of public undertakings. Consequently, their regime is governed by a significant number of rules pursuing objectives appearing, a priori, contradictory. In fact, public undertakings may experience difficulties in their management. In this context, an approach of public competition law through the prism of fair competition can be very useful. Regarding the uniformity of its judgment, fair competition appears as an objective capable of coordinating rules and overcoming their contradictions. It thereby offers a global and coherent reading plan of all the legal translations of the European competitive order being of some practical importance. In illuminating the common features of the different legal aspects of competition, we can easily switch from one to the other. It therefore makes the European approach to competition more accessible and understandable. Furthermore, and most importantly, it leads to identifying legal opportunities and threats in a cross-disciplinary way. So, from a “Law & Management” perspective, it appears to be a precious tool for the management of public undertakings. Key words: European competition law, public undertakings, fair competition, “Management & law”.


Author(s):  
I. A. Shapoval ◽  

The paper presents the interdisciplinary analysis of the determinants of the system of self-communication discourse and internal dialogue as the forms of objectivation of human mental content focused on some actions for meeting some objectives. The author describes discourse as integration of communication and language processes in self-understanding and personal identity. Contextually determined and dynamic self-communication discourse, as a way of acquirement of new senses and confirmation of old ones, verbalizes current personal values. The study results reveal the characteristics and relations of the internal dialogue discourse determinants within the human objectivity–subjectivity continuum. Discourse determinants prescribe its context and rules and include the prototype place and agents with their motives and objectives. Self-positions manifested in Self and Non-Self (Other Self) binary self-predications form the core pair of agents. The modality of a person’s attitude to own Self-positions makes their communications a dialogue or a monologue on the boundary of their sub-territories as a discourse prototype place. The degree of discourse agency, its closeness within the prototype place, or transgression openness depends on the complexity and differentiation of Self-concept and ego boundaries functionality. The frustration of meta-necessity to keep self-confidence and self-acceptance by reassessment and reformation of interrelations of Self-positions determines the motives and objectives of self-communication. The common goal of self-organization is implemented through the internal dialogue in the form of institutionalization, verification, and integration of their Self-predications. Status-role characteristics of agents and functionality of discourse prototype place determine the specificity of its motives and objectives according to the systemic effects of Self-organization.


Author(s):  
Federico Biondi ◽  
Kalyan Kumar Radhakrishnan Santhakumari ◽  
Riccardo Claudi ◽  
Matteo Aliverti ◽  
Luca Marafatto ◽  
...  
Keyword(s):  

Author(s):  
Ruihui Han

Guanxi circle play a critical role in ancient China politics. Based on guanxi, two kinds of guanxi groups formed: formal guanxi circle and informal guanxi circle. The former refers to the group centered the emperor; the latter refers to the groups with the powerful and charismatic figures as the core, except for the emperor. In order to consolidate the political power, the emperors in different periods would try to prevent the informal guanxi circle in political structure. Besides, various scriptures also denounce the informal guanxi circle, deeming such circle as harmful. The judgement of informal guanxi circle appeals to research, as there is no previous researcher has address such problems. This study set out to examine whether the informal guanxi circle is harmful to the whole political structure. Results show that the informal guanxi circle, in the antecedent of satisfactory communication, can be extremely meaningful to the whole political structure. This study implies that the fact of informal guanxi circle is on the contrary of the common sense derived from the scriptures and the superficial ancient political activities, such as the emperor’s order to prevent the informal guanxi circle. The findings can contribute a better understanding of the ancient informal guanxi circle in ancient political structure in China.


2019 ◽  
pp. 79-98
Author(s):  
Nicco La Mattina

Approaches to understanding the core beliefs and worldviews of ancient peoples are not superficially facilitated by the archaeological record. Sometimes, pre-Columbian people are described by analogy to presumably similar contemporary people; that is, a theoretical framework applicable to certain modern peoples is applied a priori in the investigation of a site. This chapter argues that at Chavín de Huántar, interpretations centred around animism and shamanism employ these concepts a priori as ways of understanding the material record. Many of the references to shamanism make specific analogies to Amazonian practices and import these ideas to Chavín de Huántar. Furthermore, the chapter authors argue that, if the iconographic and material record at Chavín de Huánta are carefully evaluated, interpretations centred around animism and shamanism will not follow. The authors demonstrate that the analogist ontology formulated by Descola finds a firmer grounding in the iconographic and material record when these are considered together.


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