申琳
關(guān)鍵詞: 學(xué)生就業(yè); 評(píng)估系統(tǒng)平臺(tái); 控制性能; 改進(jìn)設(shè)計(jì); 數(shù)據(jù)轉(zhuǎn)換; 自適應(yīng)信息融合
中圖分類號(hào): TN911.2?34; TP311.52 ? ? ? ? ? ? ?文獻(xiàn)標(biāo)識(shí)碼: A ? ? ? ? ? ? ? ? 文章編號(hào): 1004?373X(2019)14?0117?04
Improvement design and implementation of student employment
evaluation system platform
SHEN Lin
(Henan Institute of Technology, Xinxiang 453000, China)
Abstract: In allusion to the problems of low control performance and poor convergence existing during the design of the traditional student employment evaluation system platform, an improved design method of the student employment evaluation system platform is proposed. The overall design architecture of the student employment evaluation system platform is given. The hardware design and analysis of the DSP data processing module, information acquisition module, direct controller, data converter, sleep control module, and power module are conducted for the student employment evaluation system. Key analysis is conducted for the DSP data processing module. The adaptive information fusion method is adopted to conduct improvement design of the student employment evaluation system platform, construct the control instruction set of the student employment evaluation program, and realize improvement design of the student employment evaluation system platform. The experimental results show that when the number of iterations is 10, the delay errors of the method proposed in this paper and traditional method are respectively 0.29 s and 0.45 s, and when the number of iterations is 40, the delay errors of the method proposed in this paper and traditional method are respectively 0.27 s and 0.5 s, which indicates that the designed student employment evaluation system has low delay errors and can improve the control convergence of the student employment evaluation system.
Keywords: student employment; evaluation system platform; control performance; improvement design; data conversion; adaptive information fusion
0 ?引 ?言
隨著我國(guó)高等教育進(jìn)入大眾化階段,學(xué)生就業(yè)開始呈現(xiàn)大眾化、市場(chǎng)化等特點(diǎn)。其就業(yè)難也成為社會(huì)關(guān)注的焦點(diǎn),有人認(rèn)為就業(yè)難是結(jié)構(gòu)性矛盾導(dǎo)致的供需不平衡,有人認(rèn)為是高校擴(kuò)招后畢業(yè)生總量過大所致[1]。學(xué)生就業(yè)評(píng)估能反映一所高職院校教育教學(xué)和管理水平,但目前高職院校學(xué)生就業(yè)評(píng)估指標(biāo)體系還不完善,就業(yè)評(píng)估制度仍不健全。因此,一套科學(xué)、合理、全面、公正的就業(yè)評(píng)估系統(tǒng)平臺(tái)的亟待建立,對(duì)研究和探討高職院校畢業(yè)生就業(yè)評(píng)估指標(biāo)體系問題有著積極的現(xiàn)實(shí)意義[2]。
文獻(xiàn)[3]提出了構(gòu)建基于HTML5的高校就業(yè)信息服務(wù)系統(tǒng)。其采用ASP.NET+SQL Server 2008為開發(fā)技術(shù),詳細(xì)分析了系統(tǒng)需求,設(shè)計(jì)了系統(tǒng)框架、功能結(jié)構(gòu)圖和后臺(tái)數(shù)據(jù)庫,實(shí)現(xiàn)了一個(gè)跨平臺(tái)的就業(yè)信息服務(wù)系統(tǒng);但此設(shè)計(jì)的控制實(shí)時(shí)效果不好, 控制性能低。文獻(xiàn)[4]提出基于Web和基于B/S體系結(jié)構(gòu)構(gòu)建的北京石油化工學(xué)院學(xué)生就業(yè)信息平臺(tái)系統(tǒng),采用ASP.NET(C#)和SQL Server 2008等網(wǎng)站開發(fā)技術(shù),通過對(duì)系統(tǒng)概念結(jié)構(gòu)的分析,設(shè)計(jì)了數(shù)據(jù)庫的邏輯結(jié)構(gòu),并進(jìn)行了詳細(xì)的功能分析和流程分析;但在該系統(tǒng)設(shè)計(jì)過程中,控制收斂性不好,品質(zhì)較低。為了解決上述存在的問題,本文提出學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)的改進(jìn)設(shè)計(jì)。
1 ?學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)設(shè)計(jì)
1.1 ?總體構(gòu)架
本文對(duì)學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)進(jìn)行改進(jìn)設(shè)計(jì),設(shè)計(jì)的學(xué)生就業(yè)評(píng)估系統(tǒng)由上、下機(jī)位兩部分組成,能實(shí)現(xiàn)對(duì)學(xué)生就業(yè)評(píng)估系統(tǒng)、大數(shù)據(jù)分析模塊和學(xué)生就業(yè)運(yùn)行環(huán)境模塊等進(jìn)行控制。利用進(jìn)階精簡(jiǎn)指令集機(jī)器芯片(Advanced RISC Machine,ARM)作為學(xué)生就業(yè)評(píng)估系統(tǒng)的核心處理器,在FIFO RAM和B/S構(gòu)架體系下進(jìn)行系統(tǒng)的總體設(shè)計(jì)構(gòu)架分析[5]??傮w構(gòu)架如圖1所示。
學(xué)生就業(yè)評(píng)估系統(tǒng)分為硬件設(shè)計(jì)和軟件設(shè)計(jì)兩部分:先采用大數(shù)據(jù)分析模塊和學(xué)生就業(yè)運(yùn)行環(huán)境模塊進(jìn)行數(shù)據(jù)采集,得到學(xué)生就業(yè)運(yùn)行環(huán)境信息、網(wǎng)絡(luò)環(huán)境信息;再對(duì)采集的學(xué)生就業(yè)運(yùn)行環(huán)境信息進(jìn)行實(shí)時(shí)信息處理和傳輸控制[6]。分析學(xué)生就業(yè)評(píng)估系統(tǒng)的動(dòng)態(tài)信息特征,利用大數(shù)據(jù)分析進(jìn)行就業(yè)評(píng)估系統(tǒng)控制,設(shè)計(jì)用戶界面和GUI通信接口進(jìn)行多線程尋址,在大數(shù)據(jù)分析下進(jìn)行學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)改進(jìn)設(shè)計(jì)。根據(jù)上述總體設(shè)計(jì)描述,得到學(xué)生就業(yè)評(píng)估系統(tǒng)的總體結(jié)構(gòu)。
1.2 ?系統(tǒng)硬件設(shè)計(jì)
根據(jù)圖1所示的學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)設(shè)計(jì)構(gòu)架模型,首先進(jìn)行學(xué)生就業(yè)評(píng)估系統(tǒng)的硬件設(shè)計(jì),采用直接控制器實(shí)現(xiàn)就業(yè)評(píng)估管理和在線調(diào)度,在學(xué)生與用人單位之間進(jìn)行就業(yè)交互信息集成調(diào)度[7]。通過智能算法進(jìn)行大數(shù)據(jù)分析,實(shí)現(xiàn)學(xué)生就業(yè)評(píng)估系統(tǒng)資源的調(diào)度和訪問控制,完成交互下的學(xué)生就業(yè)評(píng)估系統(tǒng)的硬件開發(fā)。
采用學(xué)生就業(yè)運(yùn)行環(huán)境技術(shù)對(duì)學(xué)生就業(yè)的信息采集模塊進(jìn)行采集,在信息采集端,給每個(gè)學(xué)生就業(yè)的交互信息終端裝載一張電子標(biāo)簽卡[8]。在DSP數(shù)據(jù)處理模塊,通過FIFO RAM緩沖區(qū)進(jìn)行學(xué)生就業(yè)評(píng)估狀態(tài)信息特征分析,在上位機(jī)模塊中進(jìn)行就業(yè)管理信息的遠(yuǎn)程傳輸控制,得到學(xué)生就業(yè)評(píng)估系統(tǒng)硬件組成,如圖2所示。
2 ?系統(tǒng)軟件設(shè)計(jì)
采用自適應(yīng)信息融合方法進(jìn)行學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)改進(jìn)設(shè)計(jì)[9],構(gòu)建學(xué)生就業(yè)評(píng)估程序控制指令集,見表1。
根據(jù)表1的評(píng)估程序控制指令集,對(duì)學(xué)生就業(yè)評(píng)估系統(tǒng)的串口配置程序進(jìn)行分析[10]。利用Socket函數(shù)創(chuàng)建套接字,進(jìn)行就業(yè)評(píng)估程序的多線程網(wǎng)絡(luò)通信傳輸,建立一個(gè)socket,需要至少連接兩個(gè)套接字,采用TCP/IP協(xié)議封裝就業(yè)評(píng)估信息數(shù)據(jù)庫。在套接字編程中采用客戶機(jī)∕服務(wù)器的協(xié)作模式。在上位機(jī)通信模塊中實(shí)現(xiàn)信息融合,構(gòu)建信息融合模塊。定義一個(gè)SOCKADDER_IN類型的變量:server,調(diào)用socket創(chuàng)建套接字進(jìn)行交互數(shù)據(jù)的分層管理,得到一個(gè)地址結(jié)構(gòu)的變量:sockClient。然后在Device Drivers 菜單中進(jìn)行進(jìn)程選擇和學(xué)生就業(yè)評(píng)估信息程序控制,選擇SD/MMC 設(shè)備選項(xiàng)進(jìn)行交叉編譯,實(shí)現(xiàn)學(xué)生就業(yè)評(píng)估的串口程序配置。配置命令結(jié)構(gòu)表見表2。
在設(shè)置完配置表后,設(shè)置發(fā)送和接收控制寄存器,設(shè)置幀長(zhǎng)度和字長(zhǎng)度,進(jìn)行舞臺(tái)的控制命令交叉編譯設(shè)計(jì)。結(jié)合以上分析結(jié)果,可以得到學(xué)生就業(yè)評(píng)估系統(tǒng)軟件開發(fā)流程,如圖3所示。
3 ?實(shí)驗(yàn)測(cè)試分析
3.1 ?系統(tǒng)配置和開發(fā)環(huán)境
對(duì)學(xué)生就業(yè)評(píng)估系統(tǒng)的網(wǎng)絡(luò)體系構(gòu)架設(shè)計(jì)采用ZigBee協(xié)議棧,在交叉編譯界面中進(jìn)行學(xué)生就業(yè)評(píng)估系統(tǒng)設(shè)計(jì),得到學(xué)生就業(yè)評(píng)估系統(tǒng)設(shè)計(jì)的協(xié)議配置表,如表3所示。
3.2 ?實(shí)驗(yàn)對(duì)比
為了測(cè)試本文設(shè)計(jì)的學(xué)生就業(yè)評(píng)估系統(tǒng)的性能,進(jìn)行學(xué)生就業(yè)評(píng)估系統(tǒng)仿真分析。在嵌入式ARM環(huán)境和B/S構(gòu)架模式下進(jìn)行學(xué)生就業(yè)評(píng)估,在學(xué)生就業(yè)評(píng)估的人機(jī)交互模塊使用RS 232串口進(jìn)行控制延遲分析,采用1 000次Monte Carlo實(shí)驗(yàn)進(jìn)行學(xué)生就業(yè)評(píng)估性能分析,得到學(xué)生就業(yè)評(píng)估的數(shù)據(jù)控制延時(shí)對(duì)比結(jié)果如表4所示。
分析表4可知,采用本文方法進(jìn)行學(xué)生就業(yè)評(píng)估系統(tǒng)設(shè)計(jì),提高了對(duì)學(xué)生就業(yè)評(píng)估系統(tǒng)的控制性能,降低控制延遲,具有很好的學(xué)生就業(yè)評(píng)估系統(tǒng)實(shí)時(shí)控制效果。采用圖4所示的不同方法得到控制性能曲線??梢缘弥?dāng)?shù)螖?shù)在10時(shí),本文方法的時(shí)延誤差為0.29 s,傳統(tǒng)方法的時(shí)延誤差為0.45 s;當(dāng)?shù)螖?shù)在40時(shí),本文方法的時(shí)延誤差為0.27 s,傳統(tǒng)方法的時(shí)延誤差為0.5 s;當(dāng)?shù)螖?shù)在80時(shí),本文方法的時(shí)延誤差為0.3 s,傳統(tǒng)方法的時(shí)延誤差為0.49 s。說明本文方法的時(shí)延誤差低,提高了學(xué)生就業(yè)評(píng)估系統(tǒng)的控制收斂性。
4 ?結(jié) ?語
本文設(shè)計(jì)的學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)主要采用自適應(yīng)信息融合方法進(jìn)行學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)改進(jìn)設(shè)計(jì),構(gòu)建學(xué)生就業(yè)評(píng)估程序控制指令集,實(shí)現(xiàn)學(xué)生就業(yè)評(píng)估系統(tǒng)平臺(tái)改進(jìn)設(shè)計(jì),使其具有很好的控制收斂性。
參考文獻(xiàn)
[1] AVALLONE S, STASI G D. Design and implementation of WiMesh: a tool for the performance evaluation of multi?radio wireless mesh networks [J]. Journal of network & computer applications, 2016, 63: 98?109.
[2] BARRY D, KIMBLE L E, NAMBIAR B, et al. A framework for learning about improvement: embedded implementation and evaluation design to optimize learning [J]. International journal for quality in health care, 2018, 30(S1): 10?14.
[3] 舒遠(yuǎn)仲,黃文強(qiáng),梅夢(mèng)喆.基于HTML5跨平臺(tái)高校就業(yè)信息服務(wù)系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)[J].計(jì)算機(jī)時(shí)代,2016(3):93?96.
SHU Yuanzhong, HUANG Wenqiang, MEI Mengzhe. Design and realization of cross?platform graduate employment information service system based on HTML5 [J]. Computer era, 2016(3): 93?96.
[4] 劉洋.基于WEB結(jié)構(gòu)學(xué)生就業(yè)信息平臺(tái)的設(shè)計(jì)與實(shí)現(xiàn)[J].自動(dòng)化與儀器儀表,2016(6):146?148.
LIU Yang. Design and implementation of student employment information platform based on WEB structure [J]. Automation & instrumentation, 2016(6): 146?148.
[5] CHOUDHARY A, LIAO W K, WEINER D, et al. Design, implementation and evaluation of parallel pipelined STAP on parallel computers [J]. IEEE transactions on aerospace and electronic systems, 2000, 36(2): 528?548.
[6] LIU Z, DIRKS P, HOURDOS J. Design, specification, implementation and evaluation of a freeway queue warning system [C]// Proceedings of 2017 5th IEEE International Conference on Models and Technologies for Intelligent Transportation Systems. Naples: IEEE, 2017: 762?767.
[7] MAURER M, BROWALL P, PHELAN C, et al. Continuous improvement and employee engagement, Part 2: Design, implementation, and outcomes of a daily management system [J]. Journal of nursing administration, 2018, 48(4): 209?215.
[8] 佟一璇,王俊.高職院校畢業(yè)生頂崗實(shí)習(xí)及就業(yè)管理系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)[J].黑河教育,2017(3):77?78.
TONG Yixuan, WANG Jun. Design and implementation of internship and employment management system for graduates in higher vocational colleges [J]. Heihe education, 2017(3): 77?78.
[9] 李凱,劉易倫.高校學(xué)生頂崗實(shí)習(xí)與就業(yè)管理系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)[J].數(shù)字技術(shù)與應(yīng)用,2016(11):148.
LI Kai, LIU Yilun. Design and implementation of internship and employment management system for college students [J]. Digital technology and application, 2016(11): 148.
[10] 田林琳,董馥蘭.基于Android的沈工就業(yè)助手的設(shè)計(jì)與實(shí)現(xiàn)[J].黑龍江科技信息,2016(33):193.
TIAN Linlin, DONG Fulan. Design and implementation of Android?based employment assistant of Shenyang Institute of Technology [J]. Heilongjiang science and technology information, 2016(33): 193.