You are now at: Home » News » Hausa » Text

Ka'idodin 17 na gudanar da bitar ƙirar jujjuyawar allura, yawancin masu sarrafawa da gaske zasu

Enlarged font  Narrow font Release date:2021-01-31  Browse number:423
Note: Yadda ake yin kwalliyar allura Samarwa da aiki na bita suna santsi, cimma "inganci mai kyau, inganci mai inganci da ƙarancin amfani"?

Bayani na gudanar da bitar allura

Allurar gyare-gyare aiki ne na tsawon awa 24, wanda ya shafi kayan albarkatun filastik, kyawon allura, injunan gyare-gyaren allura, kayan aiki na gefe, kayan aiki, kayan feshi, toners, kayan marufi da kayan taimako, da sauransu, kuma akwai matsayi da yawa da hadaddun rarrabuwa na aiki . Yadda ake yin kwalliyar allura Samarwa da aiki na bita suna santsi, cimma "inganci mai kyau, inganci mai inganci da ƙarancin amfani"?

Manufar da kowane manajan allura ke fatan cimmawa. Ingancin aikin bitar allura kai tsaye yana shafar ingancin ingancin allurar ƙira, ƙimar ɓata, amfani da kayan, ƙarfin mutum, lokacin isarwa da kuma farashin samarwa. Productionirƙirar allurar allura galibi ta ta'allaka ne da sarrafawa da gudanarwa. Manajan allura daban-daban suna da ra'ayoyi daban-daban, tsarin gudanarwa da hanyoyin aiki, kuma fa'idodin da suke kawowa ga masana'antar suma sun sha bamban, har ma sun banbanta ...

Sashin gyare-gyaren allura shine sashen "jagora" na kowane masana'anta. Idan ba a gudanar da sashen yin allurar allurar da kyau ba, hakan zai iya shafar aikin dukkan sassan ma'aikatar, wanda zai haifar da ingancin / isarwar lokacin zuwa gaza biyan bukatun kwastomomi da gasa ta kamfanin.



Gudanar da bitar allurar galibi ya haɗa da: gudanar da albarkatun ƙasa / kayan taner / bututun ƙarfe, kula da ɗakin ɓaure, gudanar da ɗakin batching, amfani da gudanar da injunan gyaran allura, amfani da kuma kula da kyallin allura , amfani da gudanar da kayan aiki da kayan aiki, da horarwa da gudanarwa na ma'aikata, gudanar da samar da aminci, sassan filastik sarrafawa, gudanar da kayan taimako, kafa tsarin aiki, dokoki da ka'idoji / matsayin mukamai, tsari / gudanar da takardu, da sauransu.

1. Kimiyyar da kuma dace ma'aikata
Sashin gyaran allurar allura yana da ayyuka iri-iri, kuma ana bukatar kwararrun masana kimiya da tunani don cimma daidaito na aiki da bayyananniyar aikinsu, da kuma cimma matsayin "komai yana kan gaba kuma kowa yana kan mulki". Sabili da haka, sashen yin allurar allura yana buƙatar samun kyakkyawan tsarin ƙungiya, ya iya raba ma'aikata da kyau kuma ya ɗauki nauyin aiki na kowane matsayi.

biyu. Gudanar da dakin batching
1. Tsara tsarin gudanar da dakin wanka da jagororin aikin batching;

2. Ya kamata a sanya kayan albarkatun kasa, toners, da mahadi a dakin batching a yankuna daban-daban;

3. Kayayyakin kayan (kayan da ke dauke da ruwa) ya kamata a kasafta su sannan a sanya su kuma ayi masu alama;

4. Wajibi ne a sanya taner a jikin ramin taner kuma dole ne a yi masa alama da kyau (sunan taner, lambar taner);

5. Ya kamata a kirga mahaɗan / lamba, kuma amfani, tsaftacewa da kiyaye mahaɗin ya kamata a yi shi da kyau;

6. Sanye take da kayayyaki don tsaftace mahaɗin (bindigar iska, ruwan wuta, raguna);

7. Abubuwan da aka shirya suna buƙatar rufewa ko ɗaura tare da na'urar ɗaukar jaka, da kuma yi musu lakabi da takardar shaida (mai nunawa: albarkatun ƙasa, lambar taner, inji mai amfani, kwanan wata, sunan samfura / lamba, ma'aikatan batching, da sauransu;

8. Yi amfani da sanadarin Kanban da sanarwa na kayan aiki, kuma kayi aiki mai kyau na rikodin abubuwan haɗi;

9.White / haske launuka suna buƙatar haɗuwa tare da mahaɗi na musamman kuma kiyaye tsabtace muhalli;

10. Koyar da ma'aikatan sinadarai kan ilimin kasuwanci, nauyin aiki da tsarin gudanarwa;

3. Gudanar da dakin tarkace
1. Tsara tsarin gudanar da dakin tarkace da jagororin aikin shara.

2. Abubuwan da ake toshewa a cikin buta a cikin dakin ana bukatar rarraba su.

3. Masu nikakken murhunnuwa suna buƙatar rarrabuwa ta ɓangarori don hana thean abin fantsama da haifar da tsangwama.

4. Bayan an farfasa jakar kayan, dole ne a kulle ta cikin lokaci kuma a sanya mata tambari tare da takardar shaida (mai nuna: sunan albarkatun kasa, launi, lambar taner, kwanan wata da shara, da sauransu.

5. Ya wajaba a lasafta shi / gano shi, kuma ya kamata a yi amfani da shi, shafa mai da kuma kula da shi.

6.Regular a duba / ƙara ƙarfafa ƙusoshin ƙwanƙolin ruwa.

7. Abun buɗaɗɗen abu mai haske / fari / haske mai haske yana buƙatar murƙushe ta injin tsayayye (yana da kyau a raba ɗakin kayan murƙushewa).

8.Lokacin canza kayan bututun bututun abubuwa daban don murkushe su, ya zama dole a tsabtace matattarar ruwa da ruwan wukake da kuma tsaftace muhalli.

9. Yi aiki mai kyau na kare ma'aikata (sanya abin toshe kunnuwa, abin rufe fuska, abin rufe ido) da kuma kula da samar da aminci ga masu yin kwalliya.

10. Yi aiki mai kyau na horar da kasuwanci, horar da daukar nauyin aiki da horar da tsarin sarrafawa ga masu gogewa.

4. A-site management na allura bitar
1. Yi aiki mai kyau a cikin tsarawa da yanki na sashin bita da allura, da kuma ƙayyade yankin sakawa na inji, kayan aiki na gefe, kayan ƙamshi, kayan ƙira, kayan kwalliya, ƙwararrun samfuran, samfuran m, kayan buɗa ido kayan aiki da kayan aiki, kuma a bayyane gano su.

2. Matsayin aiki na inji mai allura yana buƙatar rataya "katin zama".

3. "5S" aikin gudanarwa a wurin samar da bita mai allura.

4. samarwar "Gaggawa" yana buƙatar tantance fitowar sauyi guda, kuma rataye katin gaggawa.

5. Zana "layin ciyarwa" a cikin bututun bushewa kuma saka lokacin ciyarwa.

6. Yi aiki mai kyau a cikin amfani da albarkatun ƙasa, sarrafa kayan ƙarancin bututun ƙarfe na matsayin mashin da bincika yawan ɓarnatar a cikin bututun ƙarfe.

7. Yi aiki mai kyau a cikin sintiri yayin sintiri, da ƙara aiwatar da dokoki da ƙa'idodi daban-daban (motsawa cikin tafiyar lokaci) 8. Da ma'ana shirya ma'aikata na injina, da ƙarfafa dubawa / kulawa da horo kan kwadago.

8. Yi aiki mai kyau a cikin tsari na ma'aikata da kuma ba da lokacin cin abinci na sashen gyaran allura.

9. Yi aiki mai kyau a cikin tsabtatawa, shafa man shafawa, kiyayewa da sarrafa matsalolin matsaloli na inji / mould.

10. Biyo da keɓancewa da ingancin samfur da yawan samarwa.

11. Dubawa da kula da hanyoyin sarrafawa da hanyoyin hada kayan kayan roba.

12. Yi aiki mai kyau a cikin binciken samar da aminci da kawar da abubuwan haɗari masu haɗari.

13. Yi aiki mai kyau a cikin dubawa, sake amfani da kuma tsabtace samfuran matsayin inji, katunan sarrafawa, umarnin aiki da kayan aiki masu alaƙa.

14. rearfafa dubawa da lura da yanayin cika rahotanni daban-daban da abubuwan kanban.

5. Gudanar da kayan aiki / launi foda / kayan hanci
1. Marufi, lakabtawa da rarraba kayan albarkatu / launi foda / kayan bututu.

2. Takaddun neman kayan albarkatun kasa / kayan taner / bututun ƙarfe.

3. Abubuwan da ba a kwance ba / kayan taner / bututun ƙarfe suna buƙatar rufewa a cikin lokaci.

4. Horarwa akan kayan roba da kuma hanyoyin gano kayan.

5. Tsara ƙa'idodi kan yawan kayan aikin bututun ƙarfe.

6. Tsara ajiya (taner rack) da amfani da ka'idojin taner.

7. Tsara Manuniyar amfani da kayan masarufi da kuma abubuwanda ake nema domin sake neman kayan.

8. A kai a kai ka duba kayan danyen / toner / bututun hanci domin hana asarar kayan.


6. Amfani da kula da kayan aiki na gefe
Kayan aiki na gefe da aka yi amfani da su wajen samar da allura sun fi hadawa da: mai kula da zafin jiki mai juyawa, mai saurin canzawa, mai sarrafawa, injin tsotsa ta atomatik, injin murkushewa na mashin, akwati, ganga mai bushewa (bushewa), da dai sauransu, yakamata a yi kayan aikin gefe da kyau Amfani / kiyayewa / aikin gudanarwa na iya tabbatar da aikin yau da kullun na samar da allura. Babban aikin aikin shine kamar haka:

Yakamata a kirga kayan aikin gefe, a gano su, a sanya su, kuma a sanya su a bangare.

Yi aiki mai kyau a cikin amfani, kiyayewa da kiyaye kayan aiki na gefe.

Sanya "Bayanin Aiki" akan kayan aiki na gefe.

Tsara ƙa'idodi game da amintaccen aiki da amfani da kayan aiki na gefe.

Yi aiki mai kyau a cikin aiki / amfani da horo na kayan aiki na gefe.

Idan kayan aikin gefe sun gaza kuma ba za a iya amfani da su ba, "status status" tana bukatar rataye-gazawar kayan aikin, ana jiran a gyara ta.

Kafa jerin kayan aiki na gefe (suna, keɓaɓɓen bayani, yawa).

7. Amfani da kuma kula da kayan karawa
Kayan aikin kayan aiki kayan aiki ne masu mahimmanci a masana'antar sarrafa allura. Yawanci sun haɗa da kayan aiki don gyara lalacewar samfura, sassan filastik waɗanda ke tsara kayan aiki, sassan filastik hudawa / kayan sarrafa bututun ƙarfe, da kayan aikin hakowa Don tabbatar da ingancin sarrafa sassan filastik, dole ne Don sarrafa dukkan kayan haɗin (kayan aiki), babban aikin aikin shine kamar haka:

Lamba, gano da kuma rarraba kayan aikin kayan aiki.

Kulawa na yau da kullun, dubawa da kiyaye kayan aiki.

Tsara "Shawarwarin Gudanar da Ayyuka" don abubuwan jituwa.

Yi aiki mai kyau a cikin amfani / horo horo na maras motsi.

Dokokin tsaro / amfani da ka'idojin gudanarwa na kayan aiki da kayan haɗi (misali yawa, jeri, lokaci, ma'ana, matsayi, da sauransu).

Fayil akan kayan aikin, sanya raket na tsawaita, sanya su, kuma kayi aiki mai kyau na karba / rikodi / sarrafawa.

8. Amfani da kuma kula da allurar ƙira
Abun ingin yana da mahimmin kayan aiki don kwalliyar allura. Halin ƙirar kai tsaye yana shafar ingancin samfurin, ƙwarewar samarwa, amfani da kayan aiki, matsayin inji da ƙarfin ma'aikata da sauran alamomi. Idan kana son yin samfuran cikin kwanciyar hankali, dole ne kayi aiki mai kyau a cikin amfani, kiyayewa da kiyaye kayan allurar. Kuma aikin gudanarwa, babban aikin aikin gudanarwa shine kamar haka:

A ganewa (sunan da lambar) na Mould ya zama bayyananne (zai fi dacewa gano ta launi).

Yi aiki mai kyau a cikin gwajin ƙira, tsara ƙa'idodin karɓar sifa, da sarrafa ƙirar ƙira.

Tsara ƙa'idodi don amfani, kiyayewa da kiyaye ƙirar (duba "Tsarin oldirar Allura, Amfani da Kulawa" littafin).

Da ma'ana saita buɗe buɗaɗɗen buɗe ido da sigogin rufewa, ƙarancin matsin lamba da ƙarfi.

Kafa fayilolin sikila, yi aiki mai kyau na rigakafin ƙura, rigakafin tsatsa, da gudanar da rajista a ciki da wajen masana'antar.

Tsarin kwalliyar tsari na musamman yakamata ya tantance bukatun amfani da su da jerin ayyukan (alamomin aikawa).

Yi amfani da kayan aikin mutu masu dacewa (sanya katakai na musamman).

Ana buƙatar sanya ƙwanƙolin a kan ƙwanƙolin goge ko allon kati.

Yi jerin gwano (jerin) ko sanya allon talla na yanki.

tara. Amfani da gudanar da feshi
Abubuwan da aka yi amfani da su a cikin allurar gyare-gyaren allura sun hada da: wakilin saki, mai hana tsatsa, mai laushi, mai goge tabo, mai goge tsabtace, da dai sauransu, ya kamata a yi amfani da dukkan abubuwan feshi kuma a sarrafa su da kyau don bayar da cikakkiyar wasa ga abin da ya dace da su. sune kamar haka:

Nau'in, aikin da kuma manufar feshi ya kamata a bayyana.

Yi aiki mai kyau na horo kan adadin feshi, hanyoyin aiki da fa'idar amfani.

Dole ne a sanya fesawar a cikin wani wuri da aka sanya (iska mai iska, yanayin zafin jiki, rigakafin wuta, da sauransu).

Tsara bayanan buƙatun fesawa da ƙa'idodin sarrafa kayan sake amfani da kwalba (don cikakkun bayanai, don Allah koma zuwa abun ciki a cikin shafin haɗe).

10. Safety samar management na allura gyare-gyaren bitar
1. Kirkiro "Kundin Tsaro na Ma'aikata na Sashin Makin Injection" da "Lambar Tsaro ga Ma'aikata a Tsarin Allurar".

2. Tsara ƙa'idodi game da amintaccen amfani da injunan gyare-gyaren allura, masu murƙushewa, masu sarrafa abubuwa, kayan aiki na gefe, kayan aiki, kayan kwalliya, wukake, fanfo, kwanuka, fanfunan bindiga, bindigogi, da kuma feshi.

3. Sa hannu kan "Wasikar Kula da Aikin Kira na Tsaro" da aiwatar da tsarin samar da aminci na "wanda ke kan mulki, wanda ke da alhaki".

4. Bin manufofin "aminci na farko, rigakafin farko", da karfafa aikin ilimantarwa da tallatawa na samarda lafiya (sanya taken kare lafiya).

5. Yi alamun tsaro, ƙarfafa aiwatar da binciken samar da aminci da tsarin gudanar da samar da aminci, da kuma kawar da haɗari masu haɗari.

6. Yi aiki mai kyau a cikin horo na ilimin samar da aminci da gudanar da bincike.

7. Yi aiki mai kyau na rigakafin wuta a cikin bitar gyaren allura kuma tabbatar da cewa amintaccen hanyar ba ta da izini.

8. Sanya hoto mai tsabtace wuta a cikin bita game da allurar kuma a yi aiki mai kyau a cikin daidaito / dubawa da kuma kula da kayan aikin kashe gobara (don cikakkun bayanai, duba littafin "Gudanar da Samar da Tsaro a cikin Alurar Inshora").


11. Gudanar da samar da gaggawa
Sanya buƙatun tsarin injina don samfuran "gaggawa".

Arfafa amfani / kiyayewar "ɓangarorin gaggawa" masu ƙira (an hana molds ƙira sosai).

Yi shiri don samar da "gaggawa" a gaba.

Controlarfafa ikon sarrafawa a cikin aikin samarwa na "sassan gaggawa".

Tsara ƙa'idodi don magance saurin abin ƙyama, injuna, da rashin ingancin ingancin aiki a cikin aikin samar da "ɓangarorin gaggawa".

An rataye "katin gaggawa" a cikin jirgin, kuma an ayyana fitarwa cikin sa'a ɗaya ko motsi ɗaya.

Yi aiki mai kyau a cikin ganowa, adanawa da sarrafawa (shiyya-shiyya) na kayayyakin "gaggawa".

5. Neman "Gaggawa" yakamata ya baiwa ma'aikata kwararru fifiko da aiwatar da juyawa.

Auki matakai masu tasiri don rage lokacin zagawar allura don haɓaka fitowar ɓangarorin gaggawa.

Yi aiki mai kyau a cikin dubawa da sauyawa cikin tsarin samar da abubuwa na gaggawa.

12. Gudanar da kayan aiki / kayan haɗi
Yi aiki mai kyau na yin rikodin amfani da kayan aiki / kayan haɗi.

Aiwatar da tsarin alhakin mai amfani da kayan aiki (asarar asara)

Kayan aiki / kayan haɗi suna buƙatar a kidaya su akai-akai don samun bambance-bambance a cikin lokaci.

Tsara ƙa'idodin gudanarwa don canja wurin kayan aiki / kayan haɗi.

Yi kabad / m ajiya kabad (kulle).

Kayan masarufi suna buƙatar "ciniki" kuma an bincika / an tabbatar.

13. Gudanar da samfura / takardu
Yi aiki mai kyau a cikin rarrabuwa, ganowa da adana samfura / takardu.

Yi aiki mai kyau na yin rikodin amfani da samfura / takardu (katunan aikin gyaran allura, umarnin aiki, rahotanni).

Rubuta jerin samfuri / daftarin aiki (jerin).

Yi aiki mai kyau na cika cikin "allon kyamara".

(7) Allurar kayan kwalliya

(8) Kanban sassan roba masu kyau da mara kyau

(9) Kanban na bututun abu samfurin

(10) Jirgin Kanban don shigowa da fitowar kayan bututun hanci

(11) Filastik Kayan Gyara Kanban

(12) Kanban don shirin canza canjin

(13) Rikodi na kodin kanban


16. Gwargwadon gudanar da allura gyaren samarwa
Matsayin gudanar da adadi:

A. Yi amfani da bayanai don yin magana da ƙarfin aiki.

B. Yin aiki yana da adadi kuma yana da sauƙin fahimtar sarrafa ilimin kimiyya.

C. Ya dace da haɓaka nauyin da ke wuyan ma'aikata a wurare daban-daban.

D. Zai iya haɓaka sha'awar ma'aikata.

E. Ana iya kwatanta shi da na baya kuma ƙirƙirar sabbin manufofin aiki a kimiyyance.

F. Yana da amfani don bincika dalilin matsalar da kuma ba da shawarar matakan ingantawa.

1. Yin allurar gyare-gyaren allura mai inganci (≥90%)

Production daidai lokacin

Inganta kayan aiki = ———————— × 100%

Ainihin makullin samarwa

Wannan alamar tana kimanta ingancin sarrafa tsarin sarrafawa da ingancin aiki, yana nuna matakin fasaha da kwanciyar hankali na samarwa.

2. usageimar amfani mai amfani (≥97%)

Jimlar nauyin ɗakunan ajiya na filastik

Usageimar amfani da ɗanyen abu = ———————— × 100%

Jimlar nauyin albarkatun kasa da aka yi amfani da su wajen samarwa

Wannan mai nuna alama yana tantance asarar kayan masarufi a cikin samar da allura da kuma nuna ingancin aikin kowane matsayi da kuma kula da albarkatun kasa.

3. Batch cancantar kudi na roba sassa (≥98%)

Binciken IPQC Ya yi yawa yawa

Yawan cancantar ƙwanƙwasa na sassan roba = ————————————— × 100%

Adadin adadin batch ɗin da aka gabatar don dubawa ta ɓangaren gyare-gyaren allura

Wannan mai nuna alama yana tantance ingancin abu da nakasassun kayan roba, wanda ke nuna ingancin aiki, matakin gudanar da kere kere da matsayin kula da ingancin samfura na ma'aikata a sassa daban daban.

4. Yawan amfani da na'ura (ƙimar amfani) (≥86%)

Ainihin samar lokacin allura gyare-gyaren inji

Utilimar amfani da na'ura = ——————————— × 100%

A ka'ida ya kamata a samar

Wannan mai nuna alama yana kimanta lokacin aiki na injin inginin allura, kuma yana nuna ingancin aikin gyaran inji / gyare-gyare da kuma ko aikin gudanarwa yana nan.

5. Yawan adana kayan allura a lokaci-lokaci (≥98.5%)

Yawan sassan da aka yi masa allura

Adadin lokacin ajiyar kaya na allura wanda aka gyara sassan = ——————————— × 100%

Jimlar tsarin samarwa

Wannan mai nuna alama yana tantance jadawalin samar da allurar gyare-gyaren allura, ingancin aiki, ingancin aiki da kuma kiyaye lokaci na kayan kayan roba, kuma yana nuna matsayin shirye-shiryen samarwa da kokarin bibiyar samar da inganci.

6. damageididdigar lalacewar Mould (≤1%)

Yawan kwalliyar da ta lalace a cikin samarwa

Damageimar lalacewar Mould = ——————————— × 100%

Adadin adadin kwalliyar da aka samar

Wannan mai nuna alama yana tantance ko aikin mould / aikin gyara yana nan, kuma yana nuna ingancin aiki, matakin fasaha, da kuma amfani da ƙira / wayar da kan jama'a na masu dacewa.

7. Lokaci mai inganci na shekara-shekara ta kowane mutum (≥ 2800 hours / person.year)

Jimlar yawan shekara guda daidai yake samarwa

Lokaci mai inganci na shekara-shekara ta kowace mace = ———————————

Matsakaicin yawan mutane

Wannan mai nuna alama yana kimanta matsayin kulawa na matsayin injin a cikin bitar gyare-gyaren allurar kuma yana nuna ingantaccen tasirin kwayar da kuma damar haɓaka ƙarfin ƙirar allura IE.

8. Jinkiri a lokacin isarwa (≤0.5%)

Adadin jinkirin isar da kayan aiki

Jinkiri a cikin isarwar kawowa = ——————————— × 100%

Adadin adadin rukunin da aka kawo

Wannan manuniya tana tantance yawan jinkiri wajen isar da sassan roba, wanda ke nuni da daidaituwar aikin sassan daban daban, sakamakon bin tsarin jadawalin samarwa, da kuma cikakken aiki da kuma kula da sashen yin allura.

10.Up da ƙasa lokaci (awa / saiti)

Babban samfuri: awanni 1.5 samfurin tsakiya: 1.0 hour modelananan samfuri: mintina 45

Wannan manuniya tana tantance ingancin aiki da ingancin mai narkar da kayan aiki, kuma yana nuna ko aikin shirye-shiryen kafin abun ya kasance da kuma matakin fasaha na ma'aikatan daidaitawa.

11. Haɗarin haɗari (sau 0)

Wannan mai nuna alama yana tantance matakin wayewar kai na samar da tsaro na ma'aikata a kowane matsayi, da matsayin horon samar da aminci / kulawar samar da tsaro na ma'aikata a dukkan matakai ta sashen yin allurar allura, wanda ke nuna mahimmancin da kuma kula da kula da samar da tsaro ta sashen da ke da alhaki.

Goma sha bakwai. Takardu da kayan da ake buƙata don sashin gyaran allura
1. "Umurnin Aiki" don ma'aikatan injina masu yin allura.

2. Umurnin aiki don injunan gyaran allura.

3. Matsayi mai kyau don sassan da aka yiwa allura.

4. Standard allura gyare-gyaren tsari yanayi.

5. Canja takaddar rikodin yanayin ƙirar allura.

6. Injin gyare-gyare na injection / takardar rikodin gyare-gyare.

7. Tabbatar da ingancin ma'aikatan kula da kayan roba.

8. Takaddun rikodin matsayin matsayin na'ura.

9. Samfurin wurin mai inji (kamar: tabbaci Yayi alama mai kyau, allon gwaji, allon launi, ƙarancin ƙarancin lahani, ƙirar matsala, ƙirar ɓangaren da aka sarrafa, da sauransu).

10. Jirgin tashar da katin matsayi (gami da katin gaggawa).

 
 
[ News Search ]  [ Add to Favourite ]  [ Publicity ]  [ Print ]  [ Violation Report ]  [ Close ]

 
Total: 0 [Show All]  Related Reviews

 
Featured
RecommendedNews
Ranking